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 | { | |
22ca247e TT |
150 | mapped_index_base () = default; |
151 | DISABLE_COPY_AND_ASSIGN (mapped_index_base); | |
152 | ||
44ed8f3e PA |
153 | /* The name_component table (a sorted vector). See name_component's |
154 | description above. */ | |
155 | std::vector<name_component> name_components; | |
156 | ||
157 | /* How NAME_COMPONENTS is sorted. */ | |
158 | enum case_sensitivity name_components_casing; | |
159 | ||
160 | /* Return the number of names in the symbol table. */ | |
161 | virtual size_t symbol_name_count () const = 0; | |
162 | ||
163 | /* Get the name of the symbol at IDX in the symbol table. */ | |
164 | virtual const char *symbol_name_at (offset_type idx) const = 0; | |
165 | ||
166 | /* Return whether the name at IDX in the symbol table should be | |
167 | ignored. */ | |
168 | virtual bool symbol_name_slot_invalid (offset_type idx) const | |
169 | { | |
170 | return false; | |
171 | } | |
172 | ||
173 | /* Build the symbol name component sorted vector, if we haven't | |
174 | yet. */ | |
175 | void build_name_components (); | |
176 | ||
177 | /* Returns the lower (inclusive) and upper (exclusive) bounds of the | |
178 | possible matches for LN_NO_PARAMS in the name component | |
179 | vector. */ | |
180 | std::pair<std::vector<name_component>::const_iterator, | |
181 | std::vector<name_component>::const_iterator> | |
182 | find_name_components_bounds (const lookup_name_info &ln_no_params) const; | |
183 | ||
184 | /* Prevent deleting/destroying via a base class pointer. */ | |
185 | protected: | |
186 | ~mapped_index_base() = default; | |
187 | }; | |
188 | ||
9291a0cd TT |
189 | /* A description of the mapped index. The file format is described in |
190 | a comment by the code that writes the index. */ | |
fc898b42 | 191 | struct mapped_index final : public mapped_index_base |
9291a0cd | 192 | { |
f00a2de2 PA |
193 | /* A slot/bucket in the symbol table hash. */ |
194 | struct symbol_table_slot | |
195 | { | |
196 | const offset_type name; | |
197 | const offset_type vec; | |
198 | }; | |
199 | ||
559a7a62 | 200 | /* Index data format version. */ |
3063847f | 201 | int version = 0; |
559a7a62 | 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 | 209 | /* A pointer to the constant pool. */ |
3063847f | 210 | const char *constant_pool = nullptr; |
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 | { | |
400174b1 TT |
813 | dwp_file (const char *name_, gdb_bfd_ref_ptr &&abfd) |
814 | : name (name_), | |
815 | dbfd (std::move (abfd)) | |
816 | { | |
817 | } | |
818 | ||
80626a55 DE |
819 | /* Name of the file. */ |
820 | const char *name; | |
821 | ||
73869dc2 | 822 | /* File format version. */ |
400174b1 | 823 | int version = 0; |
73869dc2 | 824 | |
93417882 | 825 | /* The bfd. */ |
400174b1 | 826 | gdb_bfd_ref_ptr dbfd; |
80626a55 DE |
827 | |
828 | /* Section info for this file. */ | |
400174b1 | 829 | struct dwp_sections sections {}; |
80626a55 | 830 | |
57d63ce2 | 831 | /* Table of CUs in the file. */ |
400174b1 | 832 | const struct dwp_hash_table *cus = nullptr; |
80626a55 DE |
833 | |
834 | /* Table of TUs in the file. */ | |
400174b1 | 835 | const struct dwp_hash_table *tus = nullptr; |
80626a55 | 836 | |
19ac8c2e | 837 | /* Tables of loaded CUs/TUs. Each entry is a struct dwo_unit *. */ |
400174b1 TT |
838 | htab_t loaded_cus {}; |
839 | htab_t loaded_tus {}; | |
80626a55 | 840 | |
73869dc2 DE |
841 | /* Table to map ELF section numbers to their sections. |
842 | This is only needed for the DWP V1 file format. */ | |
400174b1 TT |
843 | unsigned int num_sections = 0; |
844 | asection **elf_sections = nullptr; | |
80626a55 DE |
845 | }; |
846 | ||
36586728 TT |
847 | /* This represents a '.dwz' file. */ |
848 | ||
849 | struct dwz_file | |
850 | { | |
7ff8cb8c TT |
851 | dwz_file (gdb_bfd_ref_ptr &&bfd) |
852 | : dwz_bfd (std::move (bfd)) | |
853 | { | |
854 | } | |
855 | ||
36586728 | 856 | /* A dwz file can only contain a few sections. */ |
7ff8cb8c TT |
857 | struct dwarf2_section_info abbrev {}; |
858 | struct dwarf2_section_info info {}; | |
859 | struct dwarf2_section_info str {}; | |
860 | struct dwarf2_section_info line {}; | |
861 | struct dwarf2_section_info macro {}; | |
862 | struct dwarf2_section_info gdb_index {}; | |
863 | struct dwarf2_section_info debug_names {}; | |
36586728 TT |
864 | |
865 | /* The dwz's BFD. */ | |
7ff8cb8c | 866 | gdb_bfd_ref_ptr dwz_bfd; |
36586728 TT |
867 | }; |
868 | ||
0963b4bd MS |
869 | /* Struct used to pass misc. parameters to read_die_and_children, et |
870 | al. which are used for both .debug_info and .debug_types dies. | |
871 | All parameters here are unchanging for the life of the call. This | |
dee91e82 | 872 | struct exists to abstract away the constant parameters of die reading. */ |
93311388 DE |
873 | |
874 | struct die_reader_specs | |
875 | { | |
a32a8923 | 876 | /* The bfd of die_section. */ |
93311388 DE |
877 | bfd* abfd; |
878 | ||
879 | /* The CU of the DIE we are parsing. */ | |
880 | struct dwarf2_cu *cu; | |
881 | ||
80626a55 | 882 | /* Non-NULL if reading a DWO file (including one packaged into a DWP). */ |
3019eac3 DE |
883 | struct dwo_file *dwo_file; |
884 | ||
dee91e82 | 885 | /* The section the die comes from. |
3019eac3 | 886 | This is either .debug_info or .debug_types, or the .dwo variants. */ |
dee91e82 DE |
887 | struct dwarf2_section_info *die_section; |
888 | ||
889 | /* die_section->buffer. */ | |
d521ce57 | 890 | const gdb_byte *buffer; |
f664829e DE |
891 | |
892 | /* The end of the buffer. */ | |
893 | const gdb_byte *buffer_end; | |
a2ce51a0 DE |
894 | |
895 | /* The value of the DW_AT_comp_dir attribute. */ | |
896 | const char *comp_dir; | |
685af9cd TT |
897 | |
898 | /* The abbreviation table to use when reading the DIEs. */ | |
899 | struct abbrev_table *abbrev_table; | |
93311388 DE |
900 | }; |
901 | ||
fd820528 | 902 | /* Type of function passed to init_cutu_and_read_dies, et.al. */ |
dee91e82 | 903 | typedef void (die_reader_func_ftype) (const struct die_reader_specs *reader, |
d521ce57 | 904 | const gdb_byte *info_ptr, |
dee91e82 DE |
905 | struct die_info *comp_unit_die, |
906 | int has_children, | |
907 | void *data); | |
908 | ||
ecfb656c PA |
909 | /* A 1-based directory index. This is a strong typedef to prevent |
910 | accidentally using a directory index as a 0-based index into an | |
911 | array/vector. */ | |
912 | enum class dir_index : unsigned int {}; | |
913 | ||
914 | /* Likewise, a 1-based file name index. */ | |
915 | enum class file_name_index : unsigned int {}; | |
916 | ||
52059ffd TT |
917 | struct file_entry |
918 | { | |
fff8551c PA |
919 | file_entry () = default; |
920 | ||
ecfb656c | 921 | file_entry (const char *name_, dir_index d_index_, |
fff8551c PA |
922 | unsigned int mod_time_, unsigned int length_) |
923 | : name (name_), | |
ecfb656c | 924 | d_index (d_index_), |
fff8551c PA |
925 | mod_time (mod_time_), |
926 | length (length_) | |
927 | {} | |
928 | ||
ecfb656c PA |
929 | /* Return the include directory at D_INDEX stored in LH. Returns |
930 | NULL if D_INDEX is out of bounds. */ | |
8c43009f PA |
931 | const char *include_dir (const line_header *lh) const; |
932 | ||
fff8551c PA |
933 | /* The file name. Note this is an observing pointer. The memory is |
934 | owned by debug_line_buffer. */ | |
935 | const char *name {}; | |
936 | ||
8c43009f | 937 | /* The directory index (1-based). */ |
ecfb656c | 938 | dir_index d_index {}; |
fff8551c PA |
939 | |
940 | unsigned int mod_time {}; | |
941 | ||
942 | unsigned int length {}; | |
943 | ||
944 | /* True if referenced by the Line Number Program. */ | |
945 | bool included_p {}; | |
946 | ||
83769d0b | 947 | /* The associated symbol table, if any. */ |
fff8551c | 948 | struct symtab *symtab {}; |
52059ffd TT |
949 | }; |
950 | ||
debd256d JB |
951 | /* The line number information for a compilation unit (found in the |
952 | .debug_line section) begins with a "statement program header", | |
953 | which contains the following information. */ | |
954 | struct line_header | |
955 | { | |
fff8551c PA |
956 | line_header () |
957 | : offset_in_dwz {} | |
958 | {} | |
959 | ||
960 | /* Add an entry to the include directory table. */ | |
961 | void add_include_dir (const char *include_dir); | |
962 | ||
963 | /* Add an entry to the file name table. */ | |
ecfb656c | 964 | void add_file_name (const char *name, dir_index d_index, |
fff8551c PA |
965 | unsigned int mod_time, unsigned int length); |
966 | ||
ecfb656c | 967 | /* Return the include dir at INDEX (1-based). Returns NULL if INDEX |
8c43009f | 968 | is out of bounds. */ |
ecfb656c | 969 | const char *include_dir_at (dir_index index) const |
8c43009f | 970 | { |
ecfb656c PA |
971 | /* Convert directory index number (1-based) to vector index |
972 | (0-based). */ | |
973 | size_t vec_index = to_underlying (index) - 1; | |
974 | ||
975 | if (vec_index >= include_dirs.size ()) | |
8c43009f | 976 | return NULL; |
ecfb656c | 977 | return include_dirs[vec_index]; |
8c43009f PA |
978 | } |
979 | ||
ecfb656c | 980 | /* Return the file name at INDEX (1-based). Returns NULL if INDEX |
8c43009f | 981 | is out of bounds. */ |
ecfb656c | 982 | file_entry *file_name_at (file_name_index index) |
8c43009f | 983 | { |
ecfb656c PA |
984 | /* Convert file name index number (1-based) to vector index |
985 | (0-based). */ | |
986 | size_t vec_index = to_underlying (index) - 1; | |
987 | ||
988 | if (vec_index >= file_names.size ()) | |
fff8551c | 989 | return NULL; |
ecfb656c | 990 | return &file_names[vec_index]; |
fff8551c PA |
991 | } |
992 | ||
993 | /* Const version of the above. */ | |
994 | const file_entry *file_name_at (unsigned int index) const | |
995 | { | |
996 | if (index >= file_names.size ()) | |
8c43009f PA |
997 | return NULL; |
998 | return &file_names[index]; | |
999 | } | |
1000 | ||
527f3840 | 1001 | /* Offset of line number information in .debug_line section. */ |
9c541725 | 1002 | sect_offset sect_off {}; |
527f3840 JK |
1003 | |
1004 | /* OFFSET is for struct dwz_file associated with dwarf2_per_objfile. */ | |
fff8551c PA |
1005 | unsigned offset_in_dwz : 1; /* Can't initialize bitfields in-class. */ |
1006 | ||
1007 | unsigned int total_length {}; | |
1008 | unsigned short version {}; | |
1009 | unsigned int header_length {}; | |
1010 | unsigned char minimum_instruction_length {}; | |
1011 | unsigned char maximum_ops_per_instruction {}; | |
1012 | unsigned char default_is_stmt {}; | |
1013 | int line_base {}; | |
1014 | unsigned char line_range {}; | |
1015 | unsigned char opcode_base {}; | |
debd256d JB |
1016 | |
1017 | /* standard_opcode_lengths[i] is the number of operands for the | |
1018 | standard opcode whose value is i. This means that | |
1019 | standard_opcode_lengths[0] is unused, and the last meaningful | |
1020 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
fff8551c | 1021 | std::unique_ptr<unsigned char[]> standard_opcode_lengths; |
debd256d | 1022 | |
fff8551c PA |
1023 | /* The include_directories table. Note these are observing |
1024 | pointers. The memory is owned by debug_line_buffer. */ | |
1025 | std::vector<const char *> include_dirs; | |
debd256d | 1026 | |
fff8551c PA |
1027 | /* The file_names table. */ |
1028 | std::vector<file_entry> file_names; | |
debd256d JB |
1029 | |
1030 | /* The start and end of the statement program following this | |
6502dd73 | 1031 | header. These point into dwarf2_per_objfile->line_buffer. */ |
fff8551c | 1032 | const gdb_byte *statement_program_start {}, *statement_program_end {}; |
debd256d | 1033 | }; |
c906108c | 1034 | |
fff8551c PA |
1035 | typedef std::unique_ptr<line_header> line_header_up; |
1036 | ||
8c43009f PA |
1037 | const char * |
1038 | file_entry::include_dir (const line_header *lh) const | |
1039 | { | |
ecfb656c | 1040 | return lh->include_dir_at (d_index); |
8c43009f PA |
1041 | } |
1042 | ||
c906108c | 1043 | /* When we construct a partial symbol table entry we only |
0963b4bd | 1044 | need this much information. */ |
6f06d47b | 1045 | struct partial_die_info : public allocate_on_obstack |
c906108c | 1046 | { |
6f06d47b YQ |
1047 | partial_die_info (sect_offset sect_off, struct abbrev_info *abbrev); |
1048 | ||
1049 | /* Disable assign but still keep copy ctor, which is needed | |
1050 | load_partial_dies. */ | |
1051 | partial_die_info& operator=(const partial_die_info& rhs) = delete; | |
1052 | ||
52356b79 YQ |
1053 | /* Adjust the partial die before generating a symbol for it. This |
1054 | function may set the is_external flag or change the DIE's | |
1055 | name. */ | |
1056 | void fixup (struct dwarf2_cu *cu); | |
1057 | ||
48fbe735 YQ |
1058 | /* Read a minimal amount of information into the minimal die |
1059 | structure. */ | |
1060 | const gdb_byte *read (const struct die_reader_specs *reader, | |
1061 | const struct abbrev_info &abbrev, | |
1062 | const gdb_byte *info_ptr); | |
1063 | ||
72bf9492 | 1064 | /* Offset of this DIE. */ |
6f06d47b | 1065 | const sect_offset sect_off; |
72bf9492 DJ |
1066 | |
1067 | /* DWARF-2 tag for this DIE. */ | |
6f06d47b | 1068 | const ENUM_BITFIELD(dwarf_tag) tag : 16; |
72bf9492 | 1069 | |
72bf9492 | 1070 | /* Assorted flags describing the data found in this DIE. */ |
6f06d47b YQ |
1071 | const unsigned int has_children : 1; |
1072 | ||
72bf9492 DJ |
1073 | unsigned int is_external : 1; |
1074 | unsigned int is_declaration : 1; | |
1075 | unsigned int has_type : 1; | |
1076 | unsigned int has_specification : 1; | |
1077 | unsigned int has_pc_info : 1; | |
481860b3 | 1078 | unsigned int may_be_inlined : 1; |
72bf9492 | 1079 | |
0c1b455e TT |
1080 | /* This DIE has been marked DW_AT_main_subprogram. */ |
1081 | unsigned int main_subprogram : 1; | |
1082 | ||
72bf9492 DJ |
1083 | /* Flag set if the SCOPE field of this structure has been |
1084 | computed. */ | |
1085 | unsigned int scope_set : 1; | |
1086 | ||
fa4028e9 JB |
1087 | /* Flag set if the DIE has a byte_size attribute. */ |
1088 | unsigned int has_byte_size : 1; | |
1089 | ||
ff908ebf AW |
1090 | /* Flag set if the DIE has a DW_AT_const_value attribute. */ |
1091 | unsigned int has_const_value : 1; | |
1092 | ||
98bfdba5 PA |
1093 | /* Flag set if any of the DIE's children are template arguments. */ |
1094 | unsigned int has_template_arguments : 1; | |
1095 | ||
52356b79 | 1096 | /* Flag set if fixup has been called on this die. */ |
abc72ce4 DE |
1097 | unsigned int fixup_called : 1; |
1098 | ||
36586728 TT |
1099 | /* Flag set if DW_TAG_imported_unit uses DW_FORM_GNU_ref_alt. */ |
1100 | unsigned int is_dwz : 1; | |
1101 | ||
1102 | /* Flag set if spec_offset uses DW_FORM_GNU_ref_alt. */ | |
1103 | unsigned int spec_is_dwz : 1; | |
1104 | ||
72bf9492 | 1105 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 1106 | sometimes a default name for unnamed DIEs. */ |
6f06d47b | 1107 | const char *name = nullptr; |
72bf9492 | 1108 | |
abc72ce4 | 1109 | /* The linkage name, if present. */ |
6f06d47b | 1110 | const char *linkage_name = nullptr; |
abc72ce4 | 1111 | |
72bf9492 DJ |
1112 | /* The scope to prepend to our children. This is generally |
1113 | allocated on the comp_unit_obstack, so will disappear | |
1114 | when this compilation unit leaves the cache. */ | |
6f06d47b | 1115 | const char *scope = nullptr; |
72bf9492 | 1116 | |
95554aad TT |
1117 | /* Some data associated with the partial DIE. The tag determines |
1118 | which field is live. */ | |
1119 | union | |
1120 | { | |
1121 | /* The location description associated with this DIE, if any. */ | |
1122 | struct dwarf_block *locdesc; | |
1123 | /* The offset of an import, for DW_TAG_imported_unit. */ | |
9c541725 | 1124 | sect_offset sect_off; |
6f06d47b | 1125 | } d {}; |
72bf9492 DJ |
1126 | |
1127 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
6f06d47b YQ |
1128 | CORE_ADDR lowpc = 0; |
1129 | CORE_ADDR highpc = 0; | |
72bf9492 | 1130 | |
93311388 | 1131 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 1132 | DW_AT_sibling, if any. */ |
48fbe735 YQ |
1133 | /* NOTE: This member isn't strictly necessary, partial_die_info::read |
1134 | could return DW_AT_sibling values to its caller load_partial_dies. */ | |
6f06d47b | 1135 | const gdb_byte *sibling = nullptr; |
72bf9492 DJ |
1136 | |
1137 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
1138 | DW_AT_specification (or DW_AT_abstract_origin or | |
1139 | DW_AT_extension). */ | |
6f06d47b | 1140 | sect_offset spec_offset {}; |
72bf9492 DJ |
1141 | |
1142 | /* Pointers to this DIE's parent, first child, and next sibling, | |
1143 | if any. */ | |
6f06d47b YQ |
1144 | struct partial_die_info *die_parent = nullptr; |
1145 | struct partial_die_info *die_child = nullptr; | |
1146 | struct partial_die_info *die_sibling = nullptr; | |
1147 | ||
1148 | friend struct partial_die_info * | |
1149 | dwarf2_cu::find_partial_die (sect_offset sect_off); | |
1150 | ||
1151 | private: | |
1152 | /* Only need to do look up in dwarf2_cu::find_partial_die. */ | |
1153 | partial_die_info (sect_offset sect_off) | |
1154 | : partial_die_info (sect_off, DW_TAG_padding, 0) | |
1155 | { | |
1156 | } | |
1157 | ||
1158 | partial_die_info (sect_offset sect_off_, enum dwarf_tag tag_, | |
1159 | int has_children_) | |
1160 | : sect_off (sect_off_), tag (tag_), has_children (has_children_) | |
1161 | { | |
1162 | is_external = 0; | |
1163 | is_declaration = 0; | |
1164 | has_type = 0; | |
1165 | has_specification = 0; | |
1166 | has_pc_info = 0; | |
1167 | may_be_inlined = 0; | |
1168 | main_subprogram = 0; | |
1169 | scope_set = 0; | |
1170 | has_byte_size = 0; | |
1171 | has_const_value = 0; | |
1172 | has_template_arguments = 0; | |
1173 | fixup_called = 0; | |
1174 | is_dwz = 0; | |
1175 | spec_is_dwz = 0; | |
1176 | } | |
c906108c SS |
1177 | }; |
1178 | ||
0963b4bd | 1179 | /* This data structure holds the information of an abbrev. */ |
c906108c SS |
1180 | struct abbrev_info |
1181 | { | |
1182 | unsigned int number; /* number identifying abbrev */ | |
1183 | enum dwarf_tag tag; /* dwarf tag */ | |
f3dd6933 DJ |
1184 | unsigned short has_children; /* boolean */ |
1185 | unsigned short num_attrs; /* number of attributes */ | |
c906108c SS |
1186 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ |
1187 | struct abbrev_info *next; /* next in chain */ | |
1188 | }; | |
1189 | ||
1190 | struct attr_abbrev | |
1191 | { | |
9d25dd43 DE |
1192 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
1193 | ENUM_BITFIELD(dwarf_form) form : 16; | |
43988095 JK |
1194 | |
1195 | /* It is valid only if FORM is DW_FORM_implicit_const. */ | |
1196 | LONGEST implicit_const; | |
c906108c SS |
1197 | }; |
1198 | ||
433df2d4 DE |
1199 | /* Size of abbrev_table.abbrev_hash_table. */ |
1200 | #define ABBREV_HASH_SIZE 121 | |
1201 | ||
1202 | /* Top level data structure to contain an abbreviation table. */ | |
1203 | ||
1204 | struct abbrev_table | |
1205 | { | |
685af9cd TT |
1206 | explicit abbrev_table (sect_offset off) |
1207 | : sect_off (off) | |
1208 | { | |
4a17f768 | 1209 | m_abbrevs = |
685af9cd | 1210 | XOBNEWVEC (&abbrev_obstack, struct abbrev_info *, ABBREV_HASH_SIZE); |
4a17f768 | 1211 | memset (m_abbrevs, 0, ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); |
685af9cd TT |
1212 | } |
1213 | ||
1214 | DISABLE_COPY_AND_ASSIGN (abbrev_table); | |
1215 | ||
1216 | /* Allocate space for a struct abbrev_info object in | |
1217 | ABBREV_TABLE. */ | |
1218 | struct abbrev_info *alloc_abbrev (); | |
1219 | ||
1220 | /* Add an abbreviation to the table. */ | |
1221 | void add_abbrev (unsigned int abbrev_number, struct abbrev_info *abbrev); | |
1222 | ||
1223 | /* Look up an abbrev in the table. | |
1224 | Returns NULL if the abbrev is not found. */ | |
1225 | ||
1226 | struct abbrev_info *lookup_abbrev (unsigned int abbrev_number); | |
1227 | ||
1228 | ||
f4dc4d17 DE |
1229 | /* Where the abbrev table came from. |
1230 | This is used as a sanity check when the table is used. */ | |
685af9cd | 1231 | const sect_offset sect_off; |
433df2d4 DE |
1232 | |
1233 | /* Storage for the abbrev table. */ | |
685af9cd | 1234 | auto_obstack abbrev_obstack; |
433df2d4 | 1235 | |
4a17f768 YQ |
1236 | private: |
1237 | ||
433df2d4 DE |
1238 | /* Hash table of abbrevs. |
1239 | This is an array of size ABBREV_HASH_SIZE allocated in abbrev_obstack. | |
1240 | It could be statically allocated, but the previous code didn't so we | |
1241 | don't either. */ | |
4a17f768 | 1242 | struct abbrev_info **m_abbrevs; |
433df2d4 DE |
1243 | }; |
1244 | ||
685af9cd TT |
1245 | typedef std::unique_ptr<struct abbrev_table> abbrev_table_up; |
1246 | ||
0963b4bd | 1247 | /* Attributes have a name and a value. */ |
b60c80d6 DJ |
1248 | struct attribute |
1249 | { | |
9d25dd43 | 1250 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
8285870a JK |
1251 | ENUM_BITFIELD(dwarf_form) form : 15; |
1252 | ||
1253 | /* Has DW_STRING already been updated by dwarf2_canonicalize_name? This | |
1254 | field should be in u.str (existing only for DW_STRING) but it is kept | |
1255 | here for better struct attribute alignment. */ | |
1256 | unsigned int string_is_canonical : 1; | |
1257 | ||
b60c80d6 DJ |
1258 | union |
1259 | { | |
15d034d0 | 1260 | const char *str; |
b60c80d6 | 1261 | struct dwarf_block *blk; |
43bbcdc2 PH |
1262 | ULONGEST unsnd; |
1263 | LONGEST snd; | |
b60c80d6 | 1264 | CORE_ADDR addr; |
ac9ec31b | 1265 | ULONGEST signature; |
b60c80d6 DJ |
1266 | } |
1267 | u; | |
1268 | }; | |
1269 | ||
0963b4bd | 1270 | /* This data structure holds a complete die structure. */ |
c906108c SS |
1271 | struct die_info |
1272 | { | |
76815b17 DE |
1273 | /* DWARF-2 tag for this DIE. */ |
1274 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
1275 | ||
1276 | /* Number of attributes */ | |
98bfdba5 PA |
1277 | unsigned char num_attrs; |
1278 | ||
1279 | /* True if we're presently building the full type name for the | |
1280 | type derived from this DIE. */ | |
1281 | unsigned char building_fullname : 1; | |
76815b17 | 1282 | |
adde2bff DE |
1283 | /* True if this die is in process. PR 16581. */ |
1284 | unsigned char in_process : 1; | |
1285 | ||
76815b17 DE |
1286 | /* Abbrev number */ |
1287 | unsigned int abbrev; | |
1288 | ||
93311388 | 1289 | /* Offset in .debug_info or .debug_types section. */ |
9c541725 | 1290 | sect_offset sect_off; |
78ba4af6 JB |
1291 | |
1292 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
1293 | points to this die's parent; CHILD points to the first child of | |
1294 | this node; and all the children of a given node are chained | |
4950bc1c | 1295 | together via their SIBLING fields. */ |
639d11d3 DC |
1296 | struct die_info *child; /* Its first child, if any. */ |
1297 | struct die_info *sibling; /* Its next sibling, if any. */ | |
1298 | struct die_info *parent; /* Its parent, if any. */ | |
c906108c | 1299 | |
b60c80d6 DJ |
1300 | /* An array of attributes, with NUM_ATTRS elements. There may be |
1301 | zero, but it's not common and zero-sized arrays are not | |
1302 | sufficiently portable C. */ | |
1303 | struct attribute attrs[1]; | |
c906108c SS |
1304 | }; |
1305 | ||
0963b4bd | 1306 | /* Get at parts of an attribute structure. */ |
c906108c SS |
1307 | |
1308 | #define DW_STRING(attr) ((attr)->u.str) | |
8285870a | 1309 | #define DW_STRING_IS_CANONICAL(attr) ((attr)->string_is_canonical) |
c906108c SS |
1310 | #define DW_UNSND(attr) ((attr)->u.unsnd) |
1311 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
1312 | #define DW_SND(attr) ((attr)->u.snd) | |
1313 | #define DW_ADDR(attr) ((attr)->u.addr) | |
ac9ec31b | 1314 | #define DW_SIGNATURE(attr) ((attr)->u.signature) |
c906108c | 1315 | |
0963b4bd | 1316 | /* Blocks are a bunch of untyped bytes. */ |
c906108c SS |
1317 | struct dwarf_block |
1318 | { | |
56eb65bd | 1319 | size_t size; |
1d6edc3c JK |
1320 | |
1321 | /* Valid only if SIZE is not zero. */ | |
d521ce57 | 1322 | const gdb_byte *data; |
c906108c SS |
1323 | }; |
1324 | ||
c906108c SS |
1325 | #ifndef ATTR_ALLOC_CHUNK |
1326 | #define ATTR_ALLOC_CHUNK 4 | |
1327 | #endif | |
1328 | ||
c906108c SS |
1329 | /* Allocate fields for structs, unions and enums in this size. */ |
1330 | #ifndef DW_FIELD_ALLOC_CHUNK | |
1331 | #define DW_FIELD_ALLOC_CHUNK 4 | |
1332 | #endif | |
1333 | ||
c906108c SS |
1334 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
1335 | but this would require a corresponding change in unpack_field_as_long | |
1336 | and friends. */ | |
1337 | static int bits_per_byte = 8; | |
1338 | ||
2ddeaf8a TT |
1339 | /* When reading a variant or variant part, we track a bit more |
1340 | information about the field, and store it in an object of this | |
1341 | type. */ | |
1342 | ||
1343 | struct variant_field | |
1344 | { | |
1345 | /* If we see a DW_TAG_variant, then this will be the discriminant | |
1346 | value. */ | |
1347 | ULONGEST discriminant_value; | |
1348 | /* If we see a DW_TAG_variant, then this will be set if this is the | |
1349 | default branch. */ | |
1350 | bool default_branch; | |
1351 | /* While reading a DW_TAG_variant_part, this will be set if this | |
1352 | field is the discriminant. */ | |
1353 | bool is_discriminant; | |
1354 | }; | |
1355 | ||
52059ffd TT |
1356 | struct nextfield |
1357 | { | |
be2daae6 TT |
1358 | int accessibility = 0; |
1359 | int virtuality = 0; | |
2ddeaf8a | 1360 | /* Extra information to describe a variant or variant part. */ |
be2daae6 TT |
1361 | struct variant_field variant {}; |
1362 | struct field field {}; | |
52059ffd TT |
1363 | }; |
1364 | ||
1365 | struct fnfieldlist | |
1366 | { | |
be2daae6 TT |
1367 | const char *name = nullptr; |
1368 | std::vector<struct fn_field> fnfields; | |
52059ffd TT |
1369 | }; |
1370 | ||
c906108c SS |
1371 | /* The routines that read and process dies for a C struct or C++ class |
1372 | pass lists of data member fields and lists of member function fields | |
1373 | in an instance of a field_info structure, as defined below. */ | |
1374 | struct field_info | |
c5aa993b | 1375 | { |
0963b4bd | 1376 | /* List of data member and baseclasses fields. */ |
be2daae6 TT |
1377 | std::vector<struct nextfield> fields; |
1378 | std::vector<struct nextfield> baseclasses; | |
c906108c | 1379 | |
7d0ccb61 | 1380 | /* Number of fields (including baseclasses). */ |
be2daae6 | 1381 | int nfields = 0; |
c906108c | 1382 | |
c5aa993b | 1383 | /* Set if the accesibility of one of the fields is not public. */ |
be2daae6 | 1384 | int non_public_fields = 0; |
c906108c | 1385 | |
c5aa993b JM |
1386 | /* Member function fieldlist array, contains name of possibly overloaded |
1387 | member function, number of overloaded member functions and a pointer | |
1388 | to the head of the member function field chain. */ | |
be2daae6 | 1389 | std::vector<struct fnfieldlist> fnfieldlists; |
98751a41 JK |
1390 | |
1391 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
1392 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
be2daae6 | 1393 | std::vector<struct decl_field> typedef_field_list; |
883fd55a KS |
1394 | |
1395 | /* Nested types defined by this class and the number of elements in this | |
1396 | list. */ | |
be2daae6 | 1397 | std::vector<struct decl_field> nested_types_list; |
c5aa993b | 1398 | }; |
c906108c | 1399 | |
10b3939b DJ |
1400 | /* One item on the queue of compilation units to read in full symbols |
1401 | for. */ | |
1402 | struct dwarf2_queue_item | |
1403 | { | |
1404 | struct dwarf2_per_cu_data *per_cu; | |
95554aad | 1405 | enum language pretend_language; |
10b3939b DJ |
1406 | struct dwarf2_queue_item *next; |
1407 | }; | |
1408 | ||
1409 | /* The current queue. */ | |
1410 | static struct dwarf2_queue_item *dwarf2_queue, *dwarf2_queue_tail; | |
1411 | ||
ae038cb0 DJ |
1412 | /* Loaded secondary compilation units are kept in memory until they |
1413 | have not been referenced for the processing of this many | |
1414 | compilation units. Set this to zero to disable caching. Cache | |
1415 | sizes of up to at least twenty will improve startup time for | |
1416 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
b4f54984 | 1417 | static int dwarf_max_cache_age = 5; |
920d2a44 | 1418 | static void |
b4f54984 DE |
1419 | show_dwarf_max_cache_age (struct ui_file *file, int from_tty, |
1420 | struct cmd_list_element *c, const char *value) | |
920d2a44 | 1421 | { |
3e43a32a | 1422 | fprintf_filtered (file, _("The upper bound on the age of cached " |
b4f54984 | 1423 | "DWARF compilation units is %s.\n"), |
920d2a44 AC |
1424 | value); |
1425 | } | |
4390d890 | 1426 | \f |
c906108c SS |
1427 | /* local function prototypes */ |
1428 | ||
a32a8923 DE |
1429 | static const char *get_section_name (const struct dwarf2_section_info *); |
1430 | ||
1431 | static const char *get_section_file_name (const struct dwarf2_section_info *); | |
1432 | ||
918dd910 JK |
1433 | static void dwarf2_find_base_address (struct die_info *die, |
1434 | struct dwarf2_cu *cu); | |
1435 | ||
0018ea6f DE |
1436 | static struct partial_symtab *create_partial_symtab |
1437 | (struct dwarf2_per_cu_data *per_cu, const char *name); | |
1438 | ||
f1902523 JK |
1439 | static void build_type_psymtabs_reader (const struct die_reader_specs *reader, |
1440 | const gdb_byte *info_ptr, | |
1441 | struct die_info *type_unit_die, | |
1442 | int has_children, void *data); | |
1443 | ||
ed2dc618 SM |
1444 | static void dwarf2_build_psymtabs_hard |
1445 | (struct dwarf2_per_objfile *dwarf2_per_objfile); | |
c906108c | 1446 | |
72bf9492 DJ |
1447 | static void scan_partial_symbols (struct partial_die_info *, |
1448 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 1449 | int, struct dwarf2_cu *); |
c906108c | 1450 | |
72bf9492 DJ |
1451 | static void add_partial_symbol (struct partial_die_info *, |
1452 | struct dwarf2_cu *); | |
63d06c5c | 1453 | |
72bf9492 DJ |
1454 | static void add_partial_namespace (struct partial_die_info *pdi, |
1455 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 1456 | int set_addrmap, struct dwarf2_cu *cu); |
63d06c5c | 1457 | |
5d7cb8df | 1458 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
cdc07690 | 1459 | CORE_ADDR *highpc, int set_addrmap, |
5d7cb8df JK |
1460 | struct dwarf2_cu *cu); |
1461 | ||
72bf9492 DJ |
1462 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
1463 | struct dwarf2_cu *cu); | |
91c24f0a | 1464 | |
bc30ff58 JB |
1465 | static void add_partial_subprogram (struct partial_die_info *pdi, |
1466 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1467 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 1468 | |
257e7a09 YQ |
1469 | static void dwarf2_read_symtab (struct partial_symtab *, |
1470 | struct objfile *); | |
c906108c | 1471 | |
a14ed312 | 1472 | static void psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 1473 | |
685af9cd | 1474 | static abbrev_table_up abbrev_table_read_table |
ed2dc618 SM |
1475 | (struct dwarf2_per_objfile *dwarf2_per_objfile, struct dwarf2_section_info *, |
1476 | sect_offset); | |
433df2d4 | 1477 | |
d521ce57 | 1478 | static unsigned int peek_abbrev_code (bfd *, const gdb_byte *); |
6caca83c | 1479 | |
dee91e82 | 1480 | static struct partial_die_info *load_partial_dies |
d521ce57 | 1481 | (const struct die_reader_specs *, const gdb_byte *, int); |
72bf9492 | 1482 | |
36586728 | 1483 | static struct partial_die_info *find_partial_die (sect_offset, int, |
10b3939b | 1484 | struct dwarf2_cu *); |
72bf9492 | 1485 | |
d521ce57 TT |
1486 | static const gdb_byte *read_attribute (const struct die_reader_specs *, |
1487 | struct attribute *, struct attr_abbrev *, | |
1488 | const gdb_byte *); | |
a8329558 | 1489 | |
a1855c1d | 1490 | static unsigned int read_1_byte (bfd *, const gdb_byte *); |
c906108c | 1491 | |
a1855c1d | 1492 | static int read_1_signed_byte (bfd *, const gdb_byte *); |
c906108c | 1493 | |
a1855c1d | 1494 | static unsigned int read_2_bytes (bfd *, const gdb_byte *); |
c906108c | 1495 | |
a1855c1d | 1496 | static unsigned int read_4_bytes (bfd *, const gdb_byte *); |
c906108c | 1497 | |
a1855c1d | 1498 | static ULONGEST read_8_bytes (bfd *, const gdb_byte *); |
c906108c | 1499 | |
d521ce57 | 1500 | static CORE_ADDR read_address (bfd *, const gdb_byte *ptr, struct dwarf2_cu *, |
891d2f0b | 1501 | unsigned int *); |
c906108c | 1502 | |
d521ce57 | 1503 | static LONGEST read_initial_length (bfd *, const gdb_byte *, unsigned int *); |
c764a876 DE |
1504 | |
1505 | static LONGEST read_checked_initial_length_and_offset | |
d521ce57 | 1506 | (bfd *, const gdb_byte *, const struct comp_unit_head *, |
c764a876 | 1507 | unsigned int *, unsigned int *); |
613e1657 | 1508 | |
d521ce57 TT |
1509 | static LONGEST read_offset (bfd *, const gdb_byte *, |
1510 | const struct comp_unit_head *, | |
c764a876 DE |
1511 | unsigned int *); |
1512 | ||
d521ce57 | 1513 | static LONGEST read_offset_1 (bfd *, const gdb_byte *, unsigned int); |
613e1657 | 1514 | |
ed2dc618 SM |
1515 | static sect_offset read_abbrev_offset |
1516 | (struct dwarf2_per_objfile *dwarf2_per_objfile, | |
1517 | struct dwarf2_section_info *, sect_offset); | |
f4dc4d17 | 1518 | |
d521ce57 | 1519 | static const gdb_byte *read_n_bytes (bfd *, const gdb_byte *, unsigned int); |
c906108c | 1520 | |
d521ce57 | 1521 | static const char *read_direct_string (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1522 | |
ed2dc618 SM |
1523 | static const char *read_indirect_string |
1524 | (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *, const gdb_byte *, | |
1525 | const struct comp_unit_head *, unsigned int *); | |
4bdf3d34 | 1526 | |
ed2dc618 SM |
1527 | static const char *read_indirect_line_string |
1528 | (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *, const gdb_byte *, | |
1529 | const struct comp_unit_head *, unsigned int *); | |
36586728 | 1530 | |
ed2dc618 SM |
1531 | static const char *read_indirect_string_at_offset |
1532 | (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *abfd, | |
1533 | LONGEST str_offset); | |
927aa2e7 | 1534 | |
ed2dc618 SM |
1535 | static const char *read_indirect_string_from_dwz |
1536 | (struct objfile *objfile, struct dwz_file *, LONGEST); | |
c906108c | 1537 | |
d521ce57 | 1538 | static LONGEST read_signed_leb128 (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1539 | |
d521ce57 TT |
1540 | static CORE_ADDR read_addr_index_from_leb128 (struct dwarf2_cu *, |
1541 | const gdb_byte *, | |
3019eac3 DE |
1542 | unsigned int *); |
1543 | ||
d521ce57 | 1544 | static const char *read_str_index (const struct die_reader_specs *reader, |
342587c4 | 1545 | ULONGEST str_index); |
3019eac3 | 1546 | |
e142c38c | 1547 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 1548 | |
e142c38c DJ |
1549 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
1550 | struct dwarf2_cu *); | |
c906108c | 1551 | |
348e048f | 1552 | static struct attribute *dwarf2_attr_no_follow (struct die_info *, |
45e58e77 | 1553 | unsigned int); |
348e048f | 1554 | |
7d45c7c3 KB |
1555 | static const char *dwarf2_string_attr (struct die_info *die, unsigned int name, |
1556 | struct dwarf2_cu *cu); | |
1557 | ||
05cf31d1 JB |
1558 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
1559 | struct dwarf2_cu *cu); | |
1560 | ||
e142c38c | 1561 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1562 | |
e142c38c | 1563 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1564 | struct dwarf2_cu **); |
63d06c5c | 1565 | |
9c541725 | 1566 | static line_header_up dwarf_decode_line_header (sect_offset sect_off, |
fff8551c | 1567 | struct dwarf2_cu *cu); |
debd256d | 1568 | |
f3f5162e | 1569 | static void dwarf_decode_lines (struct line_header *, const char *, |
c3b7b696 | 1570 | struct dwarf2_cu *, struct partial_symtab *, |
527f3840 | 1571 | CORE_ADDR, int decode_mapping); |
c906108c | 1572 | |
4d663531 | 1573 | static void dwarf2_start_subfile (const char *, const char *); |
c906108c | 1574 | |
43f3e411 DE |
1575 | static struct compunit_symtab *dwarf2_start_symtab (struct dwarf2_cu *, |
1576 | const char *, const char *, | |
1577 | CORE_ADDR); | |
f4dc4d17 | 1578 | |
a14ed312 | 1579 | static struct symbol *new_symbol (struct die_info *, struct type *, |
5e2db402 | 1580 | struct dwarf2_cu *, struct symbol * = NULL); |
34eaf542 | 1581 | |
ff39bb5e | 1582 | static void dwarf2_const_value (const struct attribute *, struct symbol *, |
e7c27a73 | 1583 | struct dwarf2_cu *); |
c906108c | 1584 | |
ff39bb5e | 1585 | static void dwarf2_const_value_attr (const struct attribute *attr, |
98bfdba5 PA |
1586 | struct type *type, |
1587 | const char *name, | |
1588 | struct obstack *obstack, | |
12df843f | 1589 | struct dwarf2_cu *cu, LONGEST *value, |
d521ce57 | 1590 | const gdb_byte **bytes, |
98bfdba5 | 1591 | struct dwarf2_locexpr_baton **baton); |
2df3850c | 1592 | |
e7c27a73 | 1593 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1594 | |
b4ba55a1 JB |
1595 | static int need_gnat_info (struct dwarf2_cu *); |
1596 | ||
3e43a32a MS |
1597 | static struct type *die_descriptive_type (struct die_info *, |
1598 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1599 | |
1600 | static void set_descriptive_type (struct type *, struct die_info *, | |
1601 | struct dwarf2_cu *); | |
1602 | ||
e7c27a73 DJ |
1603 | static struct type *die_containing_type (struct die_info *, |
1604 | struct dwarf2_cu *); | |
c906108c | 1605 | |
ff39bb5e | 1606 | static struct type *lookup_die_type (struct die_info *, const struct attribute *, |
673bfd45 | 1607 | struct dwarf2_cu *); |
c906108c | 1608 | |
f792889a | 1609 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1610 | |
673bfd45 DE |
1611 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1612 | ||
0d5cff50 | 1613 | static const char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1614 | |
6e70227d | 1615 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1616 | const char *suffix, int physname, |
1617 | struct dwarf2_cu *cu); | |
63d06c5c | 1618 | |
e7c27a73 | 1619 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1620 | |
348e048f DE |
1621 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1622 | ||
e7c27a73 | 1623 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1624 | |
e7c27a73 | 1625 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1626 | |
96408a79 SA |
1627 | static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu); |
1628 | ||
71a3c369 TT |
1629 | static void read_variable (struct die_info *die, struct dwarf2_cu *cu); |
1630 | ||
ff013f42 JK |
1631 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
1632 | struct dwarf2_cu *, struct partial_symtab *); | |
1633 | ||
3a2b436a | 1634 | /* How dwarf2_get_pc_bounds constructed its *LOWPC and *HIGHPC return |
e385593e | 1635 | values. Keep the items ordered with increasing constraints compliance. */ |
3a2b436a JK |
1636 | enum pc_bounds_kind |
1637 | { | |
e385593e | 1638 | /* No attribute DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges was found. */ |
3a2b436a JK |
1639 | PC_BOUNDS_NOT_PRESENT, |
1640 | ||
e385593e JK |
1641 | /* Some of the attributes DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges |
1642 | were present but they do not form a valid range of PC addresses. */ | |
1643 | PC_BOUNDS_INVALID, | |
1644 | ||
3a2b436a JK |
1645 | /* Discontiguous range was found - that is DW_AT_ranges was found. */ |
1646 | PC_BOUNDS_RANGES, | |
1647 | ||
1648 | /* Contiguous range was found - DW_AT_low_pc and DW_AT_high_pc were found. */ | |
1649 | PC_BOUNDS_HIGH_LOW, | |
1650 | }; | |
1651 | ||
1652 | static enum pc_bounds_kind dwarf2_get_pc_bounds (struct die_info *, | |
1653 | CORE_ADDR *, CORE_ADDR *, | |
1654 | struct dwarf2_cu *, | |
1655 | struct partial_symtab *); | |
c906108c | 1656 | |
fae299cd DC |
1657 | static void get_scope_pc_bounds (struct die_info *, |
1658 | CORE_ADDR *, CORE_ADDR *, | |
1659 | struct dwarf2_cu *); | |
1660 | ||
801e3a5b JB |
1661 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
1662 | CORE_ADDR, struct dwarf2_cu *); | |
1663 | ||
a14ed312 | 1664 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1665 | struct dwarf2_cu *); |
c906108c | 1666 | |
a14ed312 | 1667 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1668 | struct type *, struct dwarf2_cu *); |
c906108c | 1669 | |
a14ed312 | 1670 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1671 | struct die_info *, struct type *, |
e7c27a73 | 1672 | struct dwarf2_cu *); |
c906108c | 1673 | |
a14ed312 | 1674 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1675 | struct type *, |
1676 | struct dwarf2_cu *); | |
c906108c | 1677 | |
134d01f1 | 1678 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1679 | |
e7c27a73 | 1680 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1681 | |
e7c27a73 | 1682 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1683 | |
5d7cb8df JK |
1684 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1685 | ||
22cee43f PMR |
1686 | static struct using_direct **using_directives (enum language); |
1687 | ||
27aa8d6a SW |
1688 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1689 | ||
74921315 KS |
1690 | static int read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu); |
1691 | ||
f55ee35c JK |
1692 | static struct type *read_module_type (struct die_info *die, |
1693 | struct dwarf2_cu *cu); | |
1694 | ||
38d518c9 | 1695 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1696 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1697 | |
134d01f1 | 1698 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1699 | |
e7c27a73 | 1700 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 1701 | |
6e70227d | 1702 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1703 | struct dwarf2_cu *); |
1704 | ||
bf6af496 | 1705 | static struct die_info *read_die_and_siblings_1 |
d521ce57 | 1706 | (const struct die_reader_specs *, const gdb_byte *, const gdb_byte **, |
bf6af496 | 1707 | struct die_info *); |
639d11d3 | 1708 | |
dee91e82 | 1709 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *, |
d521ce57 TT |
1710 | const gdb_byte *info_ptr, |
1711 | const gdb_byte **new_info_ptr, | |
639d11d3 DC |
1712 | struct die_info *parent); |
1713 | ||
d521ce57 TT |
1714 | static const gdb_byte *read_full_die_1 (const struct die_reader_specs *, |
1715 | struct die_info **, const gdb_byte *, | |
1716 | int *, int); | |
3019eac3 | 1717 | |
d521ce57 TT |
1718 | static const gdb_byte *read_full_die (const struct die_reader_specs *, |
1719 | struct die_info **, const gdb_byte *, | |
1720 | int *); | |
93311388 | 1721 | |
e7c27a73 | 1722 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1723 | |
15d034d0 TT |
1724 | static const char *dwarf2_canonicalize_name (const char *, struct dwarf2_cu *, |
1725 | struct obstack *); | |
71c25dea | 1726 | |
15d034d0 | 1727 | static const char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1728 | |
15d034d0 | 1729 | static const char *dwarf2_full_name (const char *name, |
98bfdba5 PA |
1730 | struct die_info *die, |
1731 | struct dwarf2_cu *cu); | |
1732 | ||
ca69b9e6 DE |
1733 | static const char *dwarf2_physname (const char *name, struct die_info *die, |
1734 | struct dwarf2_cu *cu); | |
1735 | ||
e142c38c | 1736 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1737 | struct dwarf2_cu **); |
9219021c | 1738 | |
f39c6ffd | 1739 | static const char *dwarf_tag_name (unsigned int); |
c906108c | 1740 | |
f39c6ffd | 1741 | static const char *dwarf_attr_name (unsigned int); |
c906108c | 1742 | |
f39c6ffd | 1743 | static const char *dwarf_form_name (unsigned int); |
c906108c | 1744 | |
a121b7c1 | 1745 | static const char *dwarf_bool_name (unsigned int); |
c906108c | 1746 | |
f39c6ffd | 1747 | static const char *dwarf_type_encoding_name (unsigned int); |
c906108c | 1748 | |
f9aca02d | 1749 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 1750 | |
d97bc12b DE |
1751 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1752 | ||
1753 | static void dump_die_for_error (struct die_info *); | |
1754 | ||
1755 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1756 | struct die_info *); | |
c906108c | 1757 | |
d97bc12b | 1758 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1759 | |
51545339 | 1760 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1761 | struct dwarf2_cu *); |
c906108c | 1762 | |
ff39bb5e | 1763 | static sect_offset dwarf2_get_ref_die_offset (const struct attribute *); |
c906108c | 1764 | |
ff39bb5e | 1765 | static LONGEST dwarf2_get_attr_constant_value (const struct attribute *, int); |
a02abb62 | 1766 | |
348e048f | 1767 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
ff39bb5e | 1768 | const struct attribute *, |
348e048f DE |
1769 | struct dwarf2_cu **); |
1770 | ||
10b3939b | 1771 | static struct die_info *follow_die_ref (struct die_info *, |
ff39bb5e | 1772 | const struct attribute *, |
f2f0e013 | 1773 | struct dwarf2_cu **); |
c906108c | 1774 | |
348e048f | 1775 | static struct die_info *follow_die_sig (struct die_info *, |
ff39bb5e | 1776 | const struct attribute *, |
348e048f DE |
1777 | struct dwarf2_cu **); |
1778 | ||
ac9ec31b DE |
1779 | static struct type *get_signatured_type (struct die_info *, ULONGEST, |
1780 | struct dwarf2_cu *); | |
1781 | ||
1782 | static struct type *get_DW_AT_signature_type (struct die_info *, | |
ff39bb5e | 1783 | const struct attribute *, |
ac9ec31b DE |
1784 | struct dwarf2_cu *); |
1785 | ||
e5fe5e75 | 1786 | static void load_full_type_unit (struct dwarf2_per_cu_data *per_cu); |
348e048f | 1787 | |
52dc124a | 1788 | static void read_signatured_type (struct signatured_type *); |
348e048f | 1789 | |
63e43d3a PMR |
1790 | static int attr_to_dynamic_prop (const struct attribute *attr, |
1791 | struct die_info *die, struct dwarf2_cu *cu, | |
1792 | struct dynamic_prop *prop); | |
1793 | ||
c906108c SS |
1794 | /* memory allocation interface */ |
1795 | ||
7b5a2f43 | 1796 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1797 | |
b60c80d6 | 1798 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1799 | |
43f3e411 | 1800 | static void dwarf_decode_macros (struct dwarf2_cu *, unsigned int, int); |
2e276125 | 1801 | |
6e5a29e1 | 1802 | static int attr_form_is_block (const struct attribute *); |
8e19ed76 | 1803 | |
6e5a29e1 | 1804 | static int attr_form_is_section_offset (const struct attribute *); |
3690dd37 | 1805 | |
6e5a29e1 | 1806 | static int attr_form_is_constant (const struct attribute *); |
3690dd37 | 1807 | |
6e5a29e1 | 1808 | static int attr_form_is_ref (const struct attribute *); |
7771576e | 1809 | |
8cf6f0b1 TT |
1810 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
1811 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 1812 | const struct attribute *attr); |
8cf6f0b1 | 1813 | |
ff39bb5e | 1814 | static void dwarf2_symbol_mark_computed (const struct attribute *attr, |
93e7bd98 | 1815 | struct symbol *sym, |
f1e6e072 TT |
1816 | struct dwarf2_cu *cu, |
1817 | int is_block); | |
4c2df51b | 1818 | |
d521ce57 TT |
1819 | static const gdb_byte *skip_one_die (const struct die_reader_specs *reader, |
1820 | const gdb_byte *info_ptr, | |
1821 | struct abbrev_info *abbrev); | |
4bb7a0a7 | 1822 | |
72bf9492 DJ |
1823 | static hashval_t partial_die_hash (const void *item); |
1824 | ||
1825 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1826 | ||
ae038cb0 | 1827 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
ed2dc618 SM |
1828 | (sect_offset sect_off, unsigned int offset_in_dwz, |
1829 | struct dwarf2_per_objfile *dwarf2_per_objfile); | |
ae038cb0 | 1830 | |
9816fde3 | 1831 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, |
95554aad TT |
1832 | struct die_info *comp_unit_die, |
1833 | enum language pretend_language); | |
93311388 | 1834 | |
ed2dc618 | 1835 | static void age_cached_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
ae038cb0 | 1836 | |
dee91e82 | 1837 | static void free_one_cached_comp_unit (struct dwarf2_per_cu_data *); |
ae038cb0 | 1838 | |
f792889a DJ |
1839 | static struct type *set_die_type (struct die_info *, struct type *, |
1840 | struct dwarf2_cu *); | |
1c379e20 | 1841 | |
ed2dc618 | 1842 | static void create_all_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
ae038cb0 | 1843 | |
ed2dc618 | 1844 | static int create_all_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
1fd400ff | 1845 | |
58f0c718 | 1846 | static void load_full_comp_unit (struct dwarf2_per_cu_data *, bool, |
95554aad | 1847 | enum language); |
10b3939b | 1848 | |
95554aad TT |
1849 | static void process_full_comp_unit (struct dwarf2_per_cu_data *, |
1850 | enum language); | |
10b3939b | 1851 | |
f4dc4d17 DE |
1852 | static void process_full_type_unit (struct dwarf2_per_cu_data *, |
1853 | enum language); | |
1854 | ||
10b3939b DJ |
1855 | static void dwarf2_add_dependence (struct dwarf2_cu *, |
1856 | struct dwarf2_per_cu_data *); | |
1857 | ||
ae038cb0 DJ |
1858 | static void dwarf2_mark (struct dwarf2_cu *); |
1859 | ||
1860 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1861 | ||
b64f50a1 | 1862 | static struct type *get_die_type_at_offset (sect_offset, |
ac9ec31b | 1863 | struct dwarf2_per_cu_data *); |
673bfd45 | 1864 | |
f792889a | 1865 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1866 | |
95554aad TT |
1867 | static void queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
1868 | enum language pretend_language); | |
1869 | ||
ed2dc618 | 1870 | static void process_queue (struct dwarf2_per_objfile *dwarf2_per_objfile); |
9291a0cd | 1871 | |
b303c6f6 AB |
1872 | /* Class, the destructor of which frees all allocated queue entries. This |
1873 | will only have work to do if an error was thrown while processing the | |
1874 | dwarf. If no error was thrown then the queue entries should have all | |
1875 | been processed, and freed, as we went along. */ | |
1876 | ||
1877 | class dwarf2_queue_guard | |
1878 | { | |
1879 | public: | |
1880 | dwarf2_queue_guard () = default; | |
1881 | ||
1882 | /* Free any entries remaining on the queue. There should only be | |
1883 | entries left if we hit an error while processing the dwarf. */ | |
1884 | ~dwarf2_queue_guard () | |
1885 | { | |
1886 | struct dwarf2_queue_item *item, *last; | |
1887 | ||
1888 | item = dwarf2_queue; | |
1889 | while (item) | |
1890 | { | |
1891 | /* Anything still marked queued is likely to be in an | |
1892 | inconsistent state, so discard it. */ | |
1893 | if (item->per_cu->queued) | |
1894 | { | |
1895 | if (item->per_cu->cu != NULL) | |
1896 | free_one_cached_comp_unit (item->per_cu); | |
1897 | item->per_cu->queued = 0; | |
1898 | } | |
1899 | ||
1900 | last = item; | |
1901 | item = item->next; | |
1902 | xfree (last); | |
1903 | } | |
1904 | ||
1905 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
1906 | } | |
1907 | }; | |
1908 | ||
d721ba37 PA |
1909 | /* The return type of find_file_and_directory. Note, the enclosed |
1910 | string pointers are only valid while this object is valid. */ | |
1911 | ||
1912 | struct file_and_directory | |
1913 | { | |
1914 | /* The filename. This is never NULL. */ | |
1915 | const char *name; | |
1916 | ||
1917 | /* The compilation directory. NULL if not known. If we needed to | |
1918 | compute a new string, this points to COMP_DIR_STORAGE, otherwise, | |
1919 | points directly to the DW_AT_comp_dir string attribute owned by | |
1920 | the obstack that owns the DIE. */ | |
1921 | const char *comp_dir; | |
1922 | ||
1923 | /* If we needed to build a new string for comp_dir, this is what | |
1924 | owns the storage. */ | |
1925 | std::string comp_dir_storage; | |
1926 | }; | |
1927 | ||
1928 | static file_and_directory find_file_and_directory (struct die_info *die, | |
1929 | struct dwarf2_cu *cu); | |
9291a0cd TT |
1930 | |
1931 | static char *file_full_name (int file, struct line_header *lh, | |
1932 | const char *comp_dir); | |
1933 | ||
43988095 JK |
1934 | /* Expected enum dwarf_unit_type for read_comp_unit_head. */ |
1935 | enum class rcuh_kind { COMPILE, TYPE }; | |
1936 | ||
d521ce57 | 1937 | static const gdb_byte *read_and_check_comp_unit_head |
ed2dc618 SM |
1938 | (struct dwarf2_per_objfile* dwarf2_per_objfile, |
1939 | struct comp_unit_head *header, | |
36586728 | 1940 | struct dwarf2_section_info *section, |
d521ce57 | 1941 | struct dwarf2_section_info *abbrev_section, const gdb_byte *info_ptr, |
43988095 | 1942 | rcuh_kind section_kind); |
36586728 | 1943 | |
fd820528 | 1944 | static void init_cutu_and_read_dies |
f4dc4d17 | 1945 | (struct dwarf2_per_cu_data *this_cu, struct abbrev_table *abbrev_table, |
58f0c718 | 1946 | int use_existing_cu, int keep, bool skip_partial, |
3019eac3 DE |
1947 | die_reader_func_ftype *die_reader_func, void *data); |
1948 | ||
dee91e82 DE |
1949 | static void init_cutu_and_read_dies_simple |
1950 | (struct dwarf2_per_cu_data *this_cu, | |
1951 | die_reader_func_ftype *die_reader_func, void *data); | |
9291a0cd | 1952 | |
673bfd45 | 1953 | static htab_t allocate_signatured_type_table (struct objfile *objfile); |
1fd400ff | 1954 | |
3019eac3 DE |
1955 | static htab_t allocate_dwo_unit_table (struct objfile *objfile); |
1956 | ||
57d63ce2 | 1957 | static struct dwo_unit *lookup_dwo_unit_in_dwp |
ed2dc618 SM |
1958 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
1959 | struct dwp_file *dwp_file, const char *comp_dir, | |
57d63ce2 | 1960 | ULONGEST signature, int is_debug_types); |
a2ce51a0 | 1961 | |
ed2dc618 SM |
1962 | static struct dwp_file *get_dwp_file |
1963 | (struct dwarf2_per_objfile *dwarf2_per_objfile); | |
a2ce51a0 | 1964 | |
3019eac3 | 1965 | static struct dwo_unit *lookup_dwo_comp_unit |
a1855c1d | 1966 | (struct dwarf2_per_cu_data *, const char *, const char *, ULONGEST); |
3019eac3 DE |
1967 | |
1968 | static struct dwo_unit *lookup_dwo_type_unit | |
a1855c1d | 1969 | (struct signatured_type *, const char *, const char *); |
3019eac3 | 1970 | |
89e63ee4 DE |
1971 | static void queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *); |
1972 | ||
263db9a1 | 1973 | static void free_dwo_file (struct dwo_file *); |
3019eac3 | 1974 | |
263db9a1 TT |
1975 | /* A unique_ptr helper to free a dwo_file. */ |
1976 | ||
1977 | struct dwo_file_deleter | |
ed2dc618 | 1978 | { |
263db9a1 TT |
1979 | void operator() (struct dwo_file *df) const |
1980 | { | |
1981 | free_dwo_file (df); | |
1982 | } | |
ed2dc618 SM |
1983 | }; |
1984 | ||
263db9a1 TT |
1985 | /* A unique pointer to a dwo_file. */ |
1986 | ||
1987 | typedef std::unique_ptr<struct dwo_file, dwo_file_deleter> dwo_file_up; | |
1988 | ||
ed2dc618 | 1989 | static void process_cu_includes (struct dwarf2_per_objfile *dwarf2_per_objfile); |
95554aad | 1990 | |
1b80a9fa | 1991 | static void check_producer (struct dwarf2_cu *cu); |
527f3840 JK |
1992 | |
1993 | static void free_line_header_voidp (void *arg); | |
4390d890 DE |
1994 | \f |
1995 | /* Various complaints about symbol reading that don't abort the process. */ | |
1996 | ||
1997 | static void | |
1998 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
1999 | { | |
b98664d3 | 2000 | complaint (_("statement list doesn't fit in .debug_line section")); |
4390d890 DE |
2001 | } |
2002 | ||
2003 | static void | |
2004 | dwarf2_debug_line_missing_file_complaint (void) | |
2005 | { | |
b98664d3 | 2006 | complaint (_(".debug_line section has line data without a file")); |
4390d890 DE |
2007 | } |
2008 | ||
2009 | static void | |
2010 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
2011 | { | |
b98664d3 | 2012 | complaint (_(".debug_line section has line " |
4390d890 DE |
2013 | "program sequence without an end")); |
2014 | } | |
2015 | ||
2016 | static void | |
2017 | dwarf2_complex_location_expr_complaint (void) | |
2018 | { | |
b98664d3 | 2019 | complaint (_("location expression too complex")); |
4390d890 DE |
2020 | } |
2021 | ||
2022 | static void | |
2023 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
2024 | int arg3) | |
2025 | { | |
b98664d3 | 2026 | complaint (_("const value length mismatch for '%s', got %d, expected %d"), |
4390d890 DE |
2027 | arg1, arg2, arg3); |
2028 | } | |
2029 | ||
2030 | static void | |
2031 | dwarf2_section_buffer_overflow_complaint (struct dwarf2_section_info *section) | |
2032 | { | |
b98664d3 | 2033 | complaint (_("debug info runs off end of %s section" |
4390d890 | 2034 | " [in module %s]"), |
a32a8923 DE |
2035 | get_section_name (section), |
2036 | get_section_file_name (section)); | |
4390d890 | 2037 | } |
1b80a9fa | 2038 | |
4390d890 DE |
2039 | static void |
2040 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
2041 | { | |
b98664d3 | 2042 | complaint (_("macro debug info contains a " |
4390d890 DE |
2043 | "malformed macro definition:\n`%s'"), |
2044 | arg1); | |
2045 | } | |
2046 | ||
2047 | static void | |
2048 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
2049 | { | |
b98664d3 | 2050 | complaint (_("invalid attribute class or form for '%s' in '%s'"), |
4390d890 DE |
2051 | arg1, arg2); |
2052 | } | |
527f3840 JK |
2053 | |
2054 | /* Hash function for line_header_hash. */ | |
2055 | ||
2056 | static hashval_t | |
2057 | line_header_hash (const struct line_header *ofs) | |
2058 | { | |
9c541725 | 2059 | return to_underlying (ofs->sect_off) ^ ofs->offset_in_dwz; |
527f3840 JK |
2060 | } |
2061 | ||
2062 | /* Hash function for htab_create_alloc_ex for line_header_hash. */ | |
2063 | ||
2064 | static hashval_t | |
2065 | line_header_hash_voidp (const void *item) | |
2066 | { | |
9a3c8263 | 2067 | const struct line_header *ofs = (const struct line_header *) item; |
527f3840 JK |
2068 | |
2069 | return line_header_hash (ofs); | |
2070 | } | |
2071 | ||
2072 | /* Equality function for line_header_hash. */ | |
2073 | ||
2074 | static int | |
2075 | line_header_eq_voidp (const void *item_lhs, const void *item_rhs) | |
2076 | { | |
9a3c8263 SM |
2077 | const struct line_header *ofs_lhs = (const struct line_header *) item_lhs; |
2078 | const struct line_header *ofs_rhs = (const struct line_header *) item_rhs; | |
527f3840 | 2079 | |
9c541725 | 2080 | return (ofs_lhs->sect_off == ofs_rhs->sect_off |
527f3840 JK |
2081 | && ofs_lhs->offset_in_dwz == ofs_rhs->offset_in_dwz); |
2082 | } | |
2083 | ||
4390d890 | 2084 | \f |
9291a0cd | 2085 | |
31aa7e4e JB |
2086 | /* Read the given attribute value as an address, taking the attribute's |
2087 | form into account. */ | |
2088 | ||
2089 | static CORE_ADDR | |
2090 | attr_value_as_address (struct attribute *attr) | |
2091 | { | |
2092 | CORE_ADDR addr; | |
2093 | ||
2094 | if (attr->form != DW_FORM_addr && attr->form != DW_FORM_GNU_addr_index) | |
2095 | { | |
2096 | /* Aside from a few clearly defined exceptions, attributes that | |
2097 | contain an address must always be in DW_FORM_addr form. | |
2098 | Unfortunately, some compilers happen to be violating this | |
2099 | requirement by encoding addresses using other forms, such | |
2100 | as DW_FORM_data4 for example. For those broken compilers, | |
2101 | we try to do our best, without any guarantee of success, | |
2102 | to interpret the address correctly. It would also be nice | |
2103 | to generate a complaint, but that would require us to maintain | |
2104 | a list of legitimate cases where a non-address form is allowed, | |
2105 | as well as update callers to pass in at least the CU's DWARF | |
2106 | version. This is more overhead than what we're willing to | |
2107 | expand for a pretty rare case. */ | |
2108 | addr = DW_UNSND (attr); | |
2109 | } | |
2110 | else | |
2111 | addr = DW_ADDR (attr); | |
2112 | ||
2113 | return addr; | |
2114 | } | |
2115 | ||
330cdd98 PA |
2116 | /* See declaration. */ |
2117 | ||
2118 | dwarf2_per_objfile::dwarf2_per_objfile (struct objfile *objfile_, | |
2119 | const dwarf2_debug_sections *names) | |
2120 | : objfile (objfile_) | |
2121 | { | |
2122 | if (names == NULL) | |
2123 | names = &dwarf2_elf_names; | |
2124 | ||
2125 | bfd *obfd = objfile->obfd; | |
2126 | ||
2127 | for (asection *sec = obfd->sections; sec != NULL; sec = sec->next) | |
2128 | locate_sections (obfd, sec, *names); | |
2129 | } | |
2130 | ||
fc8e7e75 SM |
2131 | static void free_dwo_files (htab_t dwo_files, struct objfile *objfile); |
2132 | ||
330cdd98 PA |
2133 | dwarf2_per_objfile::~dwarf2_per_objfile () |
2134 | { | |
2135 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
2136 | free_cached_comp_units (); | |
2137 | ||
2138 | if (quick_file_names_table) | |
2139 | htab_delete (quick_file_names_table); | |
2140 | ||
2141 | if (line_header_hash) | |
2142 | htab_delete (line_header_hash); | |
2143 | ||
b76e467d SM |
2144 | for (dwarf2_per_cu_data *per_cu : all_comp_units) |
2145 | VEC_free (dwarf2_per_cu_ptr, per_cu->imported_symtabs); | |
fc8e7e75 | 2146 | |
b2bdb8cf SM |
2147 | for (signatured_type *sig_type : all_type_units) |
2148 | VEC_free (dwarf2_per_cu_ptr, sig_type->per_cu.imported_symtabs); | |
fc8e7e75 SM |
2149 | |
2150 | VEC_free (dwarf2_section_info_def, types); | |
2151 | ||
2152 | if (dwo_files != NULL) | |
2153 | free_dwo_files (dwo_files, objfile); | |
fc8e7e75 | 2154 | |
330cdd98 PA |
2155 | /* Everything else should be on the objfile obstack. */ |
2156 | } | |
2157 | ||
2158 | /* See declaration. */ | |
2159 | ||
2160 | void | |
2161 | dwarf2_per_objfile::free_cached_comp_units () | |
2162 | { | |
2163 | dwarf2_per_cu_data *per_cu = read_in_chain; | |
2164 | dwarf2_per_cu_data **last_chain = &read_in_chain; | |
2165 | while (per_cu != NULL) | |
2166 | { | |
2167 | dwarf2_per_cu_data *next_cu = per_cu->cu->read_in_chain; | |
2168 | ||
fcd3b13d | 2169 | delete per_cu->cu; |
330cdd98 PA |
2170 | *last_chain = next_cu; |
2171 | per_cu = next_cu; | |
2172 | } | |
2173 | } | |
2174 | ||
11ed8cad TT |
2175 | /* A helper class that calls free_cached_comp_units on |
2176 | destruction. */ | |
2177 | ||
2178 | class free_cached_comp_units | |
2179 | { | |
2180 | public: | |
2181 | ||
2182 | explicit free_cached_comp_units (dwarf2_per_objfile *per_objfile) | |
2183 | : m_per_objfile (per_objfile) | |
2184 | { | |
2185 | } | |
2186 | ||
2187 | ~free_cached_comp_units () | |
2188 | { | |
2189 | m_per_objfile->free_cached_comp_units (); | |
2190 | } | |
2191 | ||
2192 | DISABLE_COPY_AND_ASSIGN (free_cached_comp_units); | |
2193 | ||
2194 | private: | |
2195 | ||
2196 | dwarf2_per_objfile *m_per_objfile; | |
2197 | }; | |
2198 | ||
c906108c | 2199 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
2200 | information and return true if we have enough to do something. |
2201 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
2202 | ELF names are used. */ | |
c906108c SS |
2203 | |
2204 | int | |
251d32d9 TG |
2205 | dwarf2_has_info (struct objfile *objfile, |
2206 | const struct dwarf2_debug_sections *names) | |
c906108c | 2207 | { |
97cbe998 SDJ |
2208 | if (objfile->flags & OBJF_READNEVER) |
2209 | return 0; | |
2210 | ||
ed2dc618 SM |
2211 | struct dwarf2_per_objfile *dwarf2_per_objfile |
2212 | = get_dwarf2_per_objfile (objfile); | |
2213 | ||
2214 | if (dwarf2_per_objfile == NULL) | |
be391dca TT |
2215 | { |
2216 | /* Initialize per-objfile state. */ | |
fd90ace4 YQ |
2217 | dwarf2_per_objfile |
2218 | = new (&objfile->objfile_obstack) struct dwarf2_per_objfile (objfile, | |
2219 | names); | |
ed2dc618 | 2220 | set_dwarf2_per_objfile (objfile, dwarf2_per_objfile); |
be391dca | 2221 | } |
73869dc2 | 2222 | return (!dwarf2_per_objfile->info.is_virtual |
049412e3 | 2223 | && dwarf2_per_objfile->info.s.section != NULL |
73869dc2 | 2224 | && !dwarf2_per_objfile->abbrev.is_virtual |
049412e3 | 2225 | && dwarf2_per_objfile->abbrev.s.section != NULL); |
73869dc2 DE |
2226 | } |
2227 | ||
2228 | /* Return the containing section of virtual section SECTION. */ | |
2229 | ||
2230 | static struct dwarf2_section_info * | |
2231 | get_containing_section (const struct dwarf2_section_info *section) | |
2232 | { | |
2233 | gdb_assert (section->is_virtual); | |
2234 | return section->s.containing_section; | |
c906108c SS |
2235 | } |
2236 | ||
a32a8923 DE |
2237 | /* Return the bfd owner of SECTION. */ |
2238 | ||
2239 | static struct bfd * | |
2240 | get_section_bfd_owner (const struct dwarf2_section_info *section) | |
2241 | { | |
73869dc2 DE |
2242 | if (section->is_virtual) |
2243 | { | |
2244 | section = get_containing_section (section); | |
2245 | gdb_assert (!section->is_virtual); | |
2246 | } | |
049412e3 | 2247 | return section->s.section->owner; |
a32a8923 DE |
2248 | } |
2249 | ||
2250 | /* Return the bfd section of SECTION. | |
2251 | Returns NULL if the section is not present. */ | |
2252 | ||
2253 | static asection * | |
2254 | get_section_bfd_section (const struct dwarf2_section_info *section) | |
2255 | { | |
73869dc2 DE |
2256 | if (section->is_virtual) |
2257 | { | |
2258 | section = get_containing_section (section); | |
2259 | gdb_assert (!section->is_virtual); | |
2260 | } | |
049412e3 | 2261 | return section->s.section; |
a32a8923 DE |
2262 | } |
2263 | ||
2264 | /* Return the name of SECTION. */ | |
2265 | ||
2266 | static const char * | |
2267 | get_section_name (const struct dwarf2_section_info *section) | |
2268 | { | |
2269 | asection *sectp = get_section_bfd_section (section); | |
2270 | ||
2271 | gdb_assert (sectp != NULL); | |
2272 | return bfd_section_name (get_section_bfd_owner (section), sectp); | |
2273 | } | |
2274 | ||
2275 | /* Return the name of the file SECTION is in. */ | |
2276 | ||
2277 | static const char * | |
2278 | get_section_file_name (const struct dwarf2_section_info *section) | |
2279 | { | |
2280 | bfd *abfd = get_section_bfd_owner (section); | |
2281 | ||
2282 | return bfd_get_filename (abfd); | |
2283 | } | |
2284 | ||
2285 | /* Return the id of SECTION. | |
2286 | Returns 0 if SECTION doesn't exist. */ | |
2287 | ||
2288 | static int | |
2289 | get_section_id (const struct dwarf2_section_info *section) | |
2290 | { | |
2291 | asection *sectp = get_section_bfd_section (section); | |
2292 | ||
2293 | if (sectp == NULL) | |
2294 | return 0; | |
2295 | return sectp->id; | |
2296 | } | |
2297 | ||
2298 | /* Return the flags of SECTION. | |
73869dc2 | 2299 | SECTION (or containing section if this is a virtual section) must exist. */ |
a32a8923 DE |
2300 | |
2301 | static int | |
2302 | get_section_flags (const struct dwarf2_section_info *section) | |
2303 | { | |
2304 | asection *sectp = get_section_bfd_section (section); | |
2305 | ||
2306 | gdb_assert (sectp != NULL); | |
2307 | return bfd_get_section_flags (sectp->owner, sectp); | |
2308 | } | |
2309 | ||
251d32d9 TG |
2310 | /* When loading sections, we look either for uncompressed section or for |
2311 | compressed section names. */ | |
233a11ab CS |
2312 | |
2313 | static int | |
251d32d9 TG |
2314 | section_is_p (const char *section_name, |
2315 | const struct dwarf2_section_names *names) | |
233a11ab | 2316 | { |
251d32d9 TG |
2317 | if (names->normal != NULL |
2318 | && strcmp (section_name, names->normal) == 0) | |
2319 | return 1; | |
2320 | if (names->compressed != NULL | |
2321 | && strcmp (section_name, names->compressed) == 0) | |
2322 | return 1; | |
2323 | return 0; | |
233a11ab CS |
2324 | } |
2325 | ||
330cdd98 | 2326 | /* See declaration. */ |
c906108c | 2327 | |
330cdd98 PA |
2328 | void |
2329 | dwarf2_per_objfile::locate_sections (bfd *abfd, asection *sectp, | |
2330 | const dwarf2_debug_sections &names) | |
c906108c | 2331 | { |
dc7650b8 | 2332 | flagword aflag = bfd_get_section_flags (abfd, sectp); |
251d32d9 | 2333 | |
dc7650b8 JK |
2334 | if ((aflag & SEC_HAS_CONTENTS) == 0) |
2335 | { | |
2336 | } | |
330cdd98 | 2337 | else if (section_is_p (sectp->name, &names.info)) |
c906108c | 2338 | { |
330cdd98 PA |
2339 | this->info.s.section = sectp; |
2340 | this->info.size = bfd_get_section_size (sectp); | |
c906108c | 2341 | } |
330cdd98 | 2342 | else if (section_is_p (sectp->name, &names.abbrev)) |
c906108c | 2343 | { |
330cdd98 PA |
2344 | this->abbrev.s.section = sectp; |
2345 | this->abbrev.size = bfd_get_section_size (sectp); | |
c906108c | 2346 | } |
330cdd98 | 2347 | else if (section_is_p (sectp->name, &names.line)) |
c906108c | 2348 | { |
330cdd98 PA |
2349 | this->line.s.section = sectp; |
2350 | this->line.size = bfd_get_section_size (sectp); | |
c906108c | 2351 | } |
330cdd98 | 2352 | else if (section_is_p (sectp->name, &names.loc)) |
c906108c | 2353 | { |
330cdd98 PA |
2354 | this->loc.s.section = sectp; |
2355 | this->loc.size = bfd_get_section_size (sectp); | |
c906108c | 2356 | } |
330cdd98 | 2357 | else if (section_is_p (sectp->name, &names.loclists)) |
43988095 | 2358 | { |
330cdd98 PA |
2359 | this->loclists.s.section = sectp; |
2360 | this->loclists.size = bfd_get_section_size (sectp); | |
43988095 | 2361 | } |
330cdd98 | 2362 | else if (section_is_p (sectp->name, &names.macinfo)) |
c906108c | 2363 | { |
330cdd98 PA |
2364 | this->macinfo.s.section = sectp; |
2365 | this->macinfo.size = bfd_get_section_size (sectp); | |
c906108c | 2366 | } |
330cdd98 | 2367 | else if (section_is_p (sectp->name, &names.macro)) |
cf2c3c16 | 2368 | { |
330cdd98 PA |
2369 | this->macro.s.section = sectp; |
2370 | this->macro.size = bfd_get_section_size (sectp); | |
cf2c3c16 | 2371 | } |
330cdd98 | 2372 | else if (section_is_p (sectp->name, &names.str)) |
c906108c | 2373 | { |
330cdd98 PA |
2374 | this->str.s.section = sectp; |
2375 | this->str.size = bfd_get_section_size (sectp); | |
c906108c | 2376 | } |
330cdd98 | 2377 | else if (section_is_p (sectp->name, &names.line_str)) |
43988095 | 2378 | { |
330cdd98 PA |
2379 | this->line_str.s.section = sectp; |
2380 | this->line_str.size = bfd_get_section_size (sectp); | |
43988095 | 2381 | } |
330cdd98 | 2382 | else if (section_is_p (sectp->name, &names.addr)) |
3019eac3 | 2383 | { |
330cdd98 PA |
2384 | this->addr.s.section = sectp; |
2385 | this->addr.size = bfd_get_section_size (sectp); | |
3019eac3 | 2386 | } |
330cdd98 | 2387 | else if (section_is_p (sectp->name, &names.frame)) |
b6af0555 | 2388 | { |
330cdd98 PA |
2389 | this->frame.s.section = sectp; |
2390 | this->frame.size = bfd_get_section_size (sectp); | |
b6af0555 | 2391 | } |
330cdd98 | 2392 | else if (section_is_p (sectp->name, &names.eh_frame)) |
b6af0555 | 2393 | { |
330cdd98 PA |
2394 | this->eh_frame.s.section = sectp; |
2395 | this->eh_frame.size = bfd_get_section_size (sectp); | |
b6af0555 | 2396 | } |
330cdd98 | 2397 | else if (section_is_p (sectp->name, &names.ranges)) |
af34e669 | 2398 | { |
330cdd98 PA |
2399 | this->ranges.s.section = sectp; |
2400 | this->ranges.size = bfd_get_section_size (sectp); | |
af34e669 | 2401 | } |
330cdd98 | 2402 | else if (section_is_p (sectp->name, &names.rnglists)) |
43988095 | 2403 | { |
330cdd98 PA |
2404 | this->rnglists.s.section = sectp; |
2405 | this->rnglists.size = bfd_get_section_size (sectp); | |
43988095 | 2406 | } |
330cdd98 | 2407 | else if (section_is_p (sectp->name, &names.types)) |
348e048f | 2408 | { |
8b70b953 TT |
2409 | struct dwarf2_section_info type_section; |
2410 | ||
2411 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 2412 | type_section.s.section = sectp; |
8b70b953 TT |
2413 | type_section.size = bfd_get_section_size (sectp); |
2414 | ||
330cdd98 | 2415 | VEC_safe_push (dwarf2_section_info_def, this->types, |
8b70b953 | 2416 | &type_section); |
348e048f | 2417 | } |
330cdd98 | 2418 | else if (section_is_p (sectp->name, &names.gdb_index)) |
9291a0cd | 2419 | { |
330cdd98 PA |
2420 | this->gdb_index.s.section = sectp; |
2421 | this->gdb_index.size = bfd_get_section_size (sectp); | |
9291a0cd | 2422 | } |
927aa2e7 JK |
2423 | else if (section_is_p (sectp->name, &names.debug_names)) |
2424 | { | |
2425 | this->debug_names.s.section = sectp; | |
2426 | this->debug_names.size = bfd_get_section_size (sectp); | |
2427 | } | |
2428 | else if (section_is_p (sectp->name, &names.debug_aranges)) | |
2429 | { | |
2430 | this->debug_aranges.s.section = sectp; | |
2431 | this->debug_aranges.size = bfd_get_section_size (sectp); | |
2432 | } | |
dce234bc | 2433 | |
b4e1fd61 | 2434 | if ((bfd_get_section_flags (abfd, sectp) & (SEC_LOAD | SEC_ALLOC)) |
72dca2f5 | 2435 | && bfd_section_vma (abfd, sectp) == 0) |
330cdd98 | 2436 | this->has_section_at_zero = true; |
c906108c SS |
2437 | } |
2438 | ||
fceca515 DE |
2439 | /* A helper function that decides whether a section is empty, |
2440 | or not present. */ | |
9e0ac564 TT |
2441 | |
2442 | static int | |
19ac8c2e | 2443 | dwarf2_section_empty_p (const struct dwarf2_section_info *section) |
9e0ac564 | 2444 | { |
73869dc2 DE |
2445 | if (section->is_virtual) |
2446 | return section->size == 0; | |
049412e3 | 2447 | return section->s.section == NULL || section->size == 0; |
9e0ac564 TT |
2448 | } |
2449 | ||
cd4fb1b2 | 2450 | /* See dwarf2read.h. */ |
c906108c | 2451 | |
cd4fb1b2 SM |
2452 | void |
2453 | dwarf2_read_section (struct objfile *objfile, dwarf2_section_info *info) | |
c906108c | 2454 | { |
a32a8923 | 2455 | asection *sectp; |
3019eac3 | 2456 | bfd *abfd; |
dce234bc | 2457 | gdb_byte *buf, *retbuf; |
c906108c | 2458 | |
be391dca TT |
2459 | if (info->readin) |
2460 | return; | |
dce234bc | 2461 | info->buffer = NULL; |
be391dca | 2462 | info->readin = 1; |
188dd5d6 | 2463 | |
9e0ac564 | 2464 | if (dwarf2_section_empty_p (info)) |
dce234bc | 2465 | return; |
c906108c | 2466 | |
a32a8923 | 2467 | sectp = get_section_bfd_section (info); |
3019eac3 | 2468 | |
73869dc2 DE |
2469 | /* If this is a virtual section we need to read in the real one first. */ |
2470 | if (info->is_virtual) | |
2471 | { | |
2472 | struct dwarf2_section_info *containing_section = | |
2473 | get_containing_section (info); | |
2474 | ||
2475 | gdb_assert (sectp != NULL); | |
2476 | if ((sectp->flags & SEC_RELOC) != 0) | |
2477 | { | |
2478 | error (_("Dwarf Error: DWP format V2 with relocations is not" | |
2479 | " supported in section %s [in module %s]"), | |
2480 | get_section_name (info), get_section_file_name (info)); | |
2481 | } | |
2482 | dwarf2_read_section (objfile, containing_section); | |
2483 | /* Other code should have already caught virtual sections that don't | |
2484 | fit. */ | |
2485 | gdb_assert (info->virtual_offset + info->size | |
2486 | <= containing_section->size); | |
2487 | /* If the real section is empty or there was a problem reading the | |
2488 | section we shouldn't get here. */ | |
2489 | gdb_assert (containing_section->buffer != NULL); | |
2490 | info->buffer = containing_section->buffer + info->virtual_offset; | |
2491 | return; | |
2492 | } | |
2493 | ||
4bf44c1c TT |
2494 | /* If the section has relocations, we must read it ourselves. |
2495 | Otherwise we attach it to the BFD. */ | |
2496 | if ((sectp->flags & SEC_RELOC) == 0) | |
dce234bc | 2497 | { |
d521ce57 | 2498 | info->buffer = gdb_bfd_map_section (sectp, &info->size); |
4bf44c1c | 2499 | return; |
dce234bc | 2500 | } |
dce234bc | 2501 | |
224c3ddb | 2502 | buf = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, info->size); |
4bf44c1c | 2503 | info->buffer = buf; |
dce234bc PP |
2504 | |
2505 | /* When debugging .o files, we may need to apply relocations; see | |
2506 | http://sourceware.org/ml/gdb-patches/2002-04/msg00136.html . | |
2507 | We never compress sections in .o files, so we only need to | |
2508 | try this when the section is not compressed. */ | |
ac8035ab | 2509 | retbuf = symfile_relocate_debug_section (objfile, sectp, buf); |
dce234bc PP |
2510 | if (retbuf != NULL) |
2511 | { | |
2512 | info->buffer = retbuf; | |
2513 | return; | |
2514 | } | |
2515 | ||
a32a8923 DE |
2516 | abfd = get_section_bfd_owner (info); |
2517 | gdb_assert (abfd != NULL); | |
2518 | ||
dce234bc PP |
2519 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 |
2520 | || bfd_bread (buf, info->size, abfd) != info->size) | |
19ac8c2e DE |
2521 | { |
2522 | error (_("Dwarf Error: Can't read DWARF data" | |
2523 | " in section %s [in module %s]"), | |
2524 | bfd_section_name (abfd, sectp), bfd_get_filename (abfd)); | |
2525 | } | |
dce234bc PP |
2526 | } |
2527 | ||
9e0ac564 TT |
2528 | /* A helper function that returns the size of a section in a safe way. |
2529 | If you are positive that the section has been read before using the | |
2530 | size, then it is safe to refer to the dwarf2_section_info object's | |
2531 | "size" field directly. In other cases, you must call this | |
2532 | function, because for compressed sections the size field is not set | |
2533 | correctly until the section has been read. */ | |
2534 | ||
2535 | static bfd_size_type | |
2536 | dwarf2_section_size (struct objfile *objfile, | |
2537 | struct dwarf2_section_info *info) | |
2538 | { | |
2539 | if (!info->readin) | |
2540 | dwarf2_read_section (objfile, info); | |
2541 | return info->size; | |
2542 | } | |
2543 | ||
dce234bc | 2544 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 2545 | SECTION_NAME. */ |
af34e669 | 2546 | |
dce234bc | 2547 | void |
3017a003 TG |
2548 | dwarf2_get_section_info (struct objfile *objfile, |
2549 | enum dwarf2_section_enum sect, | |
d521ce57 | 2550 | asection **sectp, const gdb_byte **bufp, |
dce234bc PP |
2551 | bfd_size_type *sizep) |
2552 | { | |
2553 | struct dwarf2_per_objfile *data | |
9a3c8263 SM |
2554 | = (struct dwarf2_per_objfile *) objfile_data (objfile, |
2555 | dwarf2_objfile_data_key); | |
dce234bc | 2556 | struct dwarf2_section_info *info; |
a3b2a86b TT |
2557 | |
2558 | /* We may see an objfile without any DWARF, in which case we just | |
2559 | return nothing. */ | |
2560 | if (data == NULL) | |
2561 | { | |
2562 | *sectp = NULL; | |
2563 | *bufp = NULL; | |
2564 | *sizep = 0; | |
2565 | return; | |
2566 | } | |
3017a003 TG |
2567 | switch (sect) |
2568 | { | |
2569 | case DWARF2_DEBUG_FRAME: | |
2570 | info = &data->frame; | |
2571 | break; | |
2572 | case DWARF2_EH_FRAME: | |
2573 | info = &data->eh_frame; | |
2574 | break; | |
2575 | default: | |
2576 | gdb_assert_not_reached ("unexpected section"); | |
2577 | } | |
dce234bc | 2578 | |
9e0ac564 | 2579 | dwarf2_read_section (objfile, info); |
dce234bc | 2580 | |
a32a8923 | 2581 | *sectp = get_section_bfd_section (info); |
dce234bc PP |
2582 | *bufp = info->buffer; |
2583 | *sizep = info->size; | |
2584 | } | |
2585 | ||
36586728 TT |
2586 | /* A helper function to find the sections for a .dwz file. */ |
2587 | ||
2588 | static void | |
2589 | locate_dwz_sections (bfd *abfd, asection *sectp, void *arg) | |
2590 | { | |
9a3c8263 | 2591 | struct dwz_file *dwz_file = (struct dwz_file *) arg; |
36586728 TT |
2592 | |
2593 | /* Note that we only support the standard ELF names, because .dwz | |
2594 | is ELF-only (at the time of writing). */ | |
2595 | if (section_is_p (sectp->name, &dwarf2_elf_names.abbrev)) | |
2596 | { | |
049412e3 | 2597 | dwz_file->abbrev.s.section = sectp; |
36586728 TT |
2598 | dwz_file->abbrev.size = bfd_get_section_size (sectp); |
2599 | } | |
2600 | else if (section_is_p (sectp->name, &dwarf2_elf_names.info)) | |
2601 | { | |
049412e3 | 2602 | dwz_file->info.s.section = sectp; |
36586728 TT |
2603 | dwz_file->info.size = bfd_get_section_size (sectp); |
2604 | } | |
2605 | else if (section_is_p (sectp->name, &dwarf2_elf_names.str)) | |
2606 | { | |
049412e3 | 2607 | dwz_file->str.s.section = sectp; |
36586728 TT |
2608 | dwz_file->str.size = bfd_get_section_size (sectp); |
2609 | } | |
2610 | else if (section_is_p (sectp->name, &dwarf2_elf_names.line)) | |
2611 | { | |
049412e3 | 2612 | dwz_file->line.s.section = sectp; |
36586728 TT |
2613 | dwz_file->line.size = bfd_get_section_size (sectp); |
2614 | } | |
2615 | else if (section_is_p (sectp->name, &dwarf2_elf_names.macro)) | |
2616 | { | |
049412e3 | 2617 | dwz_file->macro.s.section = sectp; |
36586728 TT |
2618 | dwz_file->macro.size = bfd_get_section_size (sectp); |
2619 | } | |
2ec9a5e0 TT |
2620 | else if (section_is_p (sectp->name, &dwarf2_elf_names.gdb_index)) |
2621 | { | |
049412e3 | 2622 | dwz_file->gdb_index.s.section = sectp; |
2ec9a5e0 TT |
2623 | dwz_file->gdb_index.size = bfd_get_section_size (sectp); |
2624 | } | |
927aa2e7 JK |
2625 | else if (section_is_p (sectp->name, &dwarf2_elf_names.debug_names)) |
2626 | { | |
2627 | dwz_file->debug_names.s.section = sectp; | |
2628 | dwz_file->debug_names.size = bfd_get_section_size (sectp); | |
2629 | } | |
36586728 TT |
2630 | } |
2631 | ||
4db1a1dc TT |
2632 | /* Open the separate '.dwz' debug file, if needed. Return NULL if |
2633 | there is no .gnu_debugaltlink section in the file. Error if there | |
2634 | is such a section but the file cannot be found. */ | |
36586728 TT |
2635 | |
2636 | static struct dwz_file * | |
ed2dc618 | 2637 | dwarf2_get_dwz_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
36586728 | 2638 | { |
36586728 | 2639 | const char *filename; |
acd13123 | 2640 | bfd_size_type buildid_len_arg; |
dc294be5 TT |
2641 | size_t buildid_len; |
2642 | bfd_byte *buildid; | |
36586728 TT |
2643 | |
2644 | if (dwarf2_per_objfile->dwz_file != NULL) | |
7ff8cb8c | 2645 | return dwarf2_per_objfile->dwz_file.get (); |
36586728 | 2646 | |
4db1a1dc | 2647 | bfd_set_error (bfd_error_no_error); |
791afaa2 TT |
2648 | gdb::unique_xmalloc_ptr<char> data |
2649 | (bfd_get_alt_debug_link_info (dwarf2_per_objfile->objfile->obfd, | |
2650 | &buildid_len_arg, &buildid)); | |
4db1a1dc TT |
2651 | if (data == NULL) |
2652 | { | |
2653 | if (bfd_get_error () == bfd_error_no_error) | |
2654 | return NULL; | |
2655 | error (_("could not read '.gnu_debugaltlink' section: %s"), | |
2656 | bfd_errmsg (bfd_get_error ())); | |
2657 | } | |
791afaa2 TT |
2658 | |
2659 | gdb::unique_xmalloc_ptr<bfd_byte> buildid_holder (buildid); | |
36586728 | 2660 | |
acd13123 TT |
2661 | buildid_len = (size_t) buildid_len_arg; |
2662 | ||
791afaa2 | 2663 | filename = data.get (); |
d721ba37 PA |
2664 | |
2665 | std::string abs_storage; | |
36586728 TT |
2666 | if (!IS_ABSOLUTE_PATH (filename)) |
2667 | { | |
14278e1f TT |
2668 | gdb::unique_xmalloc_ptr<char> abs |
2669 | = gdb_realpath (objfile_name (dwarf2_per_objfile->objfile)); | |
36586728 | 2670 | |
14278e1f | 2671 | abs_storage = ldirname (abs.get ()) + SLASH_STRING + filename; |
d721ba37 | 2672 | filename = abs_storage.c_str (); |
36586728 TT |
2673 | } |
2674 | ||
dc294be5 TT |
2675 | /* First try the file name given in the section. If that doesn't |
2676 | work, try to use the build-id instead. */ | |
192b62ce | 2677 | gdb_bfd_ref_ptr dwz_bfd (gdb_bfd_open (filename, gnutarget, -1)); |
dc294be5 | 2678 | if (dwz_bfd != NULL) |
36586728 | 2679 | { |
192b62ce TT |
2680 | if (!build_id_verify (dwz_bfd.get (), buildid_len, buildid)) |
2681 | dwz_bfd.release (); | |
36586728 TT |
2682 | } |
2683 | ||
dc294be5 TT |
2684 | if (dwz_bfd == NULL) |
2685 | dwz_bfd = build_id_to_debug_bfd (buildid_len, buildid); | |
2686 | ||
2687 | if (dwz_bfd == NULL) | |
2688 | error (_("could not find '.gnu_debugaltlink' file for %s"), | |
2689 | objfile_name (dwarf2_per_objfile->objfile)); | |
2690 | ||
7ff8cb8c TT |
2691 | std::unique_ptr<struct dwz_file> result |
2692 | (new struct dwz_file (std::move (dwz_bfd))); | |
36586728 | 2693 | |
7ff8cb8c TT |
2694 | bfd_map_over_sections (result->dwz_bfd.get (), locate_dwz_sections, |
2695 | result.get ()); | |
36586728 | 2696 | |
7ff8cb8c TT |
2697 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, |
2698 | result->dwz_bfd.get ()); | |
2699 | dwarf2_per_objfile->dwz_file = std::move (result); | |
2700 | return dwarf2_per_objfile->dwz_file.get (); | |
36586728 | 2701 | } |
9291a0cd | 2702 | \f |
7b9f3c50 DE |
2703 | /* DWARF quick_symbols_functions support. */ |
2704 | ||
2705 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
2706 | unique line tables, so we maintain a separate table of all .debug_line | |
2707 | derived entries to support the sharing. | |
2708 | All the quick functions need is the list of file names. We discard the | |
2709 | line_header when we're done and don't need to record it here. */ | |
2710 | struct quick_file_names | |
2711 | { | |
094b34ac DE |
2712 | /* The data used to construct the hash key. */ |
2713 | struct stmt_list_hash hash; | |
7b9f3c50 DE |
2714 | |
2715 | /* The number of entries in file_names, real_names. */ | |
2716 | unsigned int num_file_names; | |
2717 | ||
2718 | /* The file names from the line table, after being run through | |
2719 | file_full_name. */ | |
2720 | const char **file_names; | |
2721 | ||
2722 | /* The file names from the line table after being run through | |
2723 | gdb_realpath. These are computed lazily. */ | |
2724 | const char **real_names; | |
2725 | }; | |
2726 | ||
2727 | /* When using the index (and thus not using psymtabs), each CU has an | |
2728 | object of this type. This is used to hold information needed by | |
2729 | the various "quick" methods. */ | |
2730 | struct dwarf2_per_cu_quick_data | |
2731 | { | |
2732 | /* The file table. This can be NULL if there was no file table | |
2733 | or it's currently not read in. | |
2734 | NOTE: This points into dwarf2_per_objfile->quick_file_names_table. */ | |
2735 | struct quick_file_names *file_names; | |
2736 | ||
2737 | /* The corresponding symbol table. This is NULL if symbols for this | |
2738 | CU have not yet been read. */ | |
43f3e411 | 2739 | struct compunit_symtab *compunit_symtab; |
7b9f3c50 DE |
2740 | |
2741 | /* A temporary mark bit used when iterating over all CUs in | |
2742 | expand_symtabs_matching. */ | |
2743 | unsigned int mark : 1; | |
2744 | ||
2745 | /* True if we've tried to read the file table and found there isn't one. | |
2746 | There will be no point in trying to read it again next time. */ | |
2747 | unsigned int no_file_data : 1; | |
2748 | }; | |
2749 | ||
094b34ac DE |
2750 | /* Utility hash function for a stmt_list_hash. */ |
2751 | ||
2752 | static hashval_t | |
2753 | hash_stmt_list_entry (const struct stmt_list_hash *stmt_list_hash) | |
2754 | { | |
2755 | hashval_t v = 0; | |
2756 | ||
2757 | if (stmt_list_hash->dwo_unit != NULL) | |
2758 | v += (uintptr_t) stmt_list_hash->dwo_unit->dwo_file; | |
9c541725 | 2759 | v += to_underlying (stmt_list_hash->line_sect_off); |
094b34ac DE |
2760 | return v; |
2761 | } | |
2762 | ||
2763 | /* Utility equality function for a stmt_list_hash. */ | |
2764 | ||
2765 | static int | |
2766 | eq_stmt_list_entry (const struct stmt_list_hash *lhs, | |
2767 | const struct stmt_list_hash *rhs) | |
2768 | { | |
2769 | if ((lhs->dwo_unit != NULL) != (rhs->dwo_unit != NULL)) | |
2770 | return 0; | |
2771 | if (lhs->dwo_unit != NULL | |
2772 | && lhs->dwo_unit->dwo_file != rhs->dwo_unit->dwo_file) | |
2773 | return 0; | |
2774 | ||
9c541725 | 2775 | return lhs->line_sect_off == rhs->line_sect_off; |
094b34ac DE |
2776 | } |
2777 | ||
7b9f3c50 DE |
2778 | /* Hash function for a quick_file_names. */ |
2779 | ||
2780 | static hashval_t | |
2781 | hash_file_name_entry (const void *e) | |
2782 | { | |
9a3c8263 SM |
2783 | const struct quick_file_names *file_data |
2784 | = (const struct quick_file_names *) e; | |
7b9f3c50 | 2785 | |
094b34ac | 2786 | return hash_stmt_list_entry (&file_data->hash); |
7b9f3c50 DE |
2787 | } |
2788 | ||
2789 | /* Equality function for a quick_file_names. */ | |
2790 | ||
2791 | static int | |
2792 | eq_file_name_entry (const void *a, const void *b) | |
2793 | { | |
9a3c8263 SM |
2794 | const struct quick_file_names *ea = (const struct quick_file_names *) a; |
2795 | const struct quick_file_names *eb = (const struct quick_file_names *) b; | |
7b9f3c50 | 2796 | |
094b34ac | 2797 | return eq_stmt_list_entry (&ea->hash, &eb->hash); |
7b9f3c50 DE |
2798 | } |
2799 | ||
2800 | /* Delete function for a quick_file_names. */ | |
2801 | ||
2802 | static void | |
2803 | delete_file_name_entry (void *e) | |
2804 | { | |
9a3c8263 | 2805 | struct quick_file_names *file_data = (struct quick_file_names *) e; |
7b9f3c50 DE |
2806 | int i; |
2807 | ||
2808 | for (i = 0; i < file_data->num_file_names; ++i) | |
2809 | { | |
2810 | xfree ((void*) file_data->file_names[i]); | |
2811 | if (file_data->real_names) | |
2812 | xfree ((void*) file_data->real_names[i]); | |
2813 | } | |
2814 | ||
2815 | /* The space for the struct itself lives on objfile_obstack, | |
2816 | so we don't free it here. */ | |
2817 | } | |
2818 | ||
2819 | /* Create a quick_file_names hash table. */ | |
2820 | ||
2821 | static htab_t | |
2822 | create_quick_file_names_table (unsigned int nr_initial_entries) | |
2823 | { | |
2824 | return htab_create_alloc (nr_initial_entries, | |
2825 | hash_file_name_entry, eq_file_name_entry, | |
2826 | delete_file_name_entry, xcalloc, xfree); | |
2827 | } | |
9291a0cd | 2828 | |
918dd910 JK |
2829 | /* Read in PER_CU->CU. This function is unrelated to symtabs, symtab would |
2830 | have to be created afterwards. You should call age_cached_comp_units after | |
2831 | processing PER_CU->CU. dw2_setup must have been already called. */ | |
2832 | ||
2833 | static void | |
58f0c718 | 2834 | load_cu (struct dwarf2_per_cu_data *per_cu, bool skip_partial) |
918dd910 | 2835 | { |
3019eac3 | 2836 | if (per_cu->is_debug_types) |
e5fe5e75 | 2837 | load_full_type_unit (per_cu); |
918dd910 | 2838 | else |
58f0c718 | 2839 | load_full_comp_unit (per_cu, skip_partial, language_minimal); |
918dd910 | 2840 | |
cc12ce38 DE |
2841 | if (per_cu->cu == NULL) |
2842 | return; /* Dummy CU. */ | |
2dc860c0 DE |
2843 | |
2844 | dwarf2_find_base_address (per_cu->cu->dies, per_cu->cu); | |
918dd910 JK |
2845 | } |
2846 | ||
a0f42c21 | 2847 | /* Read in the symbols for PER_CU. */ |
2fdf6df6 | 2848 | |
9291a0cd | 2849 | static void |
58f0c718 | 2850 | dw2_do_instantiate_symtab (struct dwarf2_per_cu_data *per_cu, bool skip_partial) |
9291a0cd | 2851 | { |
ed2dc618 | 2852 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
9291a0cd | 2853 | |
f4dc4d17 DE |
2854 | /* Skip type_unit_groups, reading the type units they contain |
2855 | is handled elsewhere. */ | |
2856 | if (IS_TYPE_UNIT_GROUP (per_cu)) | |
2857 | return; | |
2858 | ||
b303c6f6 AB |
2859 | /* The destructor of dwarf2_queue_guard frees any entries left on |
2860 | the queue. After this point we're guaranteed to leave this function | |
2861 | with the dwarf queue empty. */ | |
2862 | dwarf2_queue_guard q_guard; | |
9291a0cd | 2863 | |
95554aad | 2864 | if (dwarf2_per_objfile->using_index |
43f3e411 | 2865 | ? per_cu->v.quick->compunit_symtab == NULL |
95554aad TT |
2866 | : (per_cu->v.psymtab == NULL || !per_cu->v.psymtab->readin)) |
2867 | { | |
2868 | queue_comp_unit (per_cu, language_minimal); | |
58f0c718 | 2869 | load_cu (per_cu, skip_partial); |
89e63ee4 DE |
2870 | |
2871 | /* If we just loaded a CU from a DWO, and we're working with an index | |
2872 | that may badly handle TUs, load all the TUs in that DWO as well. | |
2873 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
2874 | if (!per_cu->is_debug_types | |
cc12ce38 | 2875 | && per_cu->cu != NULL |
89e63ee4 DE |
2876 | && per_cu->cu->dwo_unit != NULL |
2877 | && dwarf2_per_objfile->index_table != NULL | |
2878 | && dwarf2_per_objfile->index_table->version <= 7 | |
2879 | /* DWP files aren't supported yet. */ | |
ed2dc618 | 2880 | && get_dwp_file (dwarf2_per_objfile) == NULL) |
89e63ee4 | 2881 | queue_and_load_all_dwo_tus (per_cu); |
95554aad | 2882 | } |
9291a0cd | 2883 | |
ed2dc618 | 2884 | process_queue (dwarf2_per_objfile); |
9291a0cd TT |
2885 | |
2886 | /* Age the cache, releasing compilation units that have not | |
2887 | been used recently. */ | |
ed2dc618 | 2888 | age_cached_comp_units (dwarf2_per_objfile); |
9291a0cd TT |
2889 | } |
2890 | ||
2891 | /* Ensure that the symbols for PER_CU have been read in. OBJFILE is | |
2892 | the objfile from which this CU came. Returns the resulting symbol | |
2893 | table. */ | |
2fdf6df6 | 2894 | |
43f3e411 | 2895 | static struct compunit_symtab * |
58f0c718 | 2896 | dw2_instantiate_symtab (struct dwarf2_per_cu_data *per_cu, bool skip_partial) |
9291a0cd | 2897 | { |
ed2dc618 SM |
2898 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
2899 | ||
95554aad | 2900 | gdb_assert (dwarf2_per_objfile->using_index); |
43f3e411 | 2901 | if (!per_cu->v.quick->compunit_symtab) |
9291a0cd | 2902 | { |
11ed8cad | 2903 | free_cached_comp_units freer (dwarf2_per_objfile); |
c83dd867 | 2904 | scoped_restore decrementer = increment_reading_symtab (); |
58f0c718 | 2905 | dw2_do_instantiate_symtab (per_cu, skip_partial); |
ed2dc618 | 2906 | process_cu_includes (dwarf2_per_objfile); |
9291a0cd | 2907 | } |
f194fefb | 2908 | |
43f3e411 | 2909 | return per_cu->v.quick->compunit_symtab; |
9291a0cd TT |
2910 | } |
2911 | ||
ff4c9fec | 2912 | /* See declaration. */ |
f4dc4d17 | 2913 | |
ff4c9fec SM |
2914 | dwarf2_per_cu_data * |
2915 | dwarf2_per_objfile::get_cutu (int index) | |
2916 | { | |
b76e467d | 2917 | if (index >= this->all_comp_units.size ()) |
ff4c9fec | 2918 | { |
b76e467d | 2919 | index -= this->all_comp_units.size (); |
b2bdb8cf | 2920 | gdb_assert (index < this->all_type_units.size ()); |
ff4c9fec SM |
2921 | return &this->all_type_units[index]->per_cu; |
2922 | } | |
f4dc4d17 | 2923 | |
ff4c9fec SM |
2924 | return this->all_comp_units[index]; |
2925 | } | |
f4dc4d17 | 2926 | |
ff4c9fec | 2927 | /* See declaration. */ |
2fdf6df6 | 2928 | |
ff4c9fec SM |
2929 | dwarf2_per_cu_data * |
2930 | dwarf2_per_objfile::get_cu (int index) | |
1fd400ff | 2931 | { |
b76e467d | 2932 | gdb_assert (index >= 0 && index < this->all_comp_units.size ()); |
f4dc4d17 | 2933 | |
ff4c9fec | 2934 | return this->all_comp_units[index]; |
f4dc4d17 DE |
2935 | } |
2936 | ||
ff4c9fec | 2937 | /* See declaration. */ |
f4dc4d17 | 2938 | |
ff4c9fec SM |
2939 | signatured_type * |
2940 | dwarf2_per_objfile::get_tu (int index) | |
f4dc4d17 | 2941 | { |
b2bdb8cf | 2942 | gdb_assert (index >= 0 && index < this->all_type_units.size ()); |
f4dc4d17 | 2943 | |
ff4c9fec | 2944 | return this->all_type_units[index]; |
1fd400ff TT |
2945 | } |
2946 | ||
4b514bc8 JK |
2947 | /* Return a new dwarf2_per_cu_data allocated on OBJFILE's |
2948 | objfile_obstack, and constructed with the specified field | |
2949 | values. */ | |
2950 | ||
2951 | static dwarf2_per_cu_data * | |
ed2dc618 | 2952 | create_cu_from_index_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
4b514bc8 JK |
2953 | struct dwarf2_section_info *section, |
2954 | int is_dwz, | |
2955 | sect_offset sect_off, ULONGEST length) | |
2956 | { | |
ed2dc618 | 2957 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
4b514bc8 JK |
2958 | dwarf2_per_cu_data *the_cu |
2959 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2960 | struct dwarf2_per_cu_data); | |
2961 | the_cu->sect_off = sect_off; | |
2962 | the_cu->length = length; | |
e3b94546 | 2963 | the_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
4b514bc8 JK |
2964 | the_cu->section = section; |
2965 | the_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2966 | struct dwarf2_per_cu_quick_data); | |
2967 | the_cu->is_dwz = is_dwz; | |
2968 | return the_cu; | |
2969 | } | |
2970 | ||
2ec9a5e0 TT |
2971 | /* A helper for create_cus_from_index that handles a given list of |
2972 | CUs. */ | |
2fdf6df6 | 2973 | |
74a0d9f6 | 2974 | static void |
12359b5e | 2975 | create_cus_from_index_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
2ec9a5e0 TT |
2976 | const gdb_byte *cu_list, offset_type n_elements, |
2977 | struct dwarf2_section_info *section, | |
b76e467d | 2978 | int is_dwz) |
9291a0cd | 2979 | { |
12359b5e | 2980 | for (offset_type i = 0; i < n_elements; i += 2) |
9291a0cd | 2981 | { |
74a0d9f6 | 2982 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
2983 | |
2984 | sect_offset sect_off | |
2985 | = (sect_offset) extract_unsigned_integer (cu_list, 8, BFD_ENDIAN_LITTLE); | |
2986 | ULONGEST length = extract_unsigned_integer (cu_list + 8, 8, BFD_ENDIAN_LITTLE); | |
9291a0cd TT |
2987 | cu_list += 2 * 8; |
2988 | ||
b76e467d | 2989 | dwarf2_per_cu_data *per_cu |
ed2dc618 SM |
2990 | = create_cu_from_index_list (dwarf2_per_objfile, section, is_dwz, |
2991 | sect_off, length); | |
b76e467d | 2992 | dwarf2_per_objfile->all_comp_units.push_back (per_cu); |
9291a0cd | 2993 | } |
9291a0cd TT |
2994 | } |
2995 | ||
2ec9a5e0 | 2996 | /* Read the CU list from the mapped index, and use it to create all |
74a0d9f6 | 2997 | the CU objects for this objfile. */ |
2ec9a5e0 | 2998 | |
74a0d9f6 | 2999 | static void |
12359b5e | 3000 | create_cus_from_index (struct dwarf2_per_objfile *dwarf2_per_objfile, |
2ec9a5e0 TT |
3001 | const gdb_byte *cu_list, offset_type cu_list_elements, |
3002 | const gdb_byte *dwz_list, offset_type dwz_elements) | |
3003 | { | |
b76e467d SM |
3004 | gdb_assert (dwarf2_per_objfile->all_comp_units.empty ()); |
3005 | dwarf2_per_objfile->all_comp_units.reserve | |
3006 | ((cu_list_elements + dwz_elements) / 2); | |
2ec9a5e0 | 3007 | |
12359b5e | 3008 | create_cus_from_index_list (dwarf2_per_objfile, cu_list, cu_list_elements, |
b76e467d | 3009 | &dwarf2_per_objfile->info, 0); |
2ec9a5e0 TT |
3010 | |
3011 | if (dwz_elements == 0) | |
74a0d9f6 | 3012 | return; |
2ec9a5e0 | 3013 | |
12359b5e SM |
3014 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
3015 | create_cus_from_index_list (dwarf2_per_objfile, dwz_list, dwz_elements, | |
b76e467d | 3016 | &dwz->info, 1); |
2ec9a5e0 TT |
3017 | } |
3018 | ||
1fd400ff | 3019 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 3020 | |
74a0d9f6 | 3021 | static void |
12359b5e SM |
3022 | create_signatured_type_table_from_index |
3023 | (struct dwarf2_per_objfile *dwarf2_per_objfile, | |
3024 | struct dwarf2_section_info *section, | |
3025 | const gdb_byte *bytes, | |
3026 | offset_type elements) | |
1fd400ff | 3027 | { |
12359b5e | 3028 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
1fd400ff | 3029 | |
b2bdb8cf SM |
3030 | gdb_assert (dwarf2_per_objfile->all_type_units.empty ()); |
3031 | dwarf2_per_objfile->all_type_units.reserve (elements / 3); | |
1fd400ff | 3032 | |
12359b5e | 3033 | htab_t sig_types_hash = allocate_signatured_type_table (objfile); |
1fd400ff | 3034 | |
12359b5e | 3035 | for (offset_type i = 0; i < elements; i += 3) |
1fd400ff | 3036 | { |
52dc124a | 3037 | struct signatured_type *sig_type; |
9c541725 | 3038 | ULONGEST signature; |
1fd400ff | 3039 | void **slot; |
9c541725 | 3040 | cu_offset type_offset_in_tu; |
1fd400ff | 3041 | |
74a0d9f6 | 3042 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
3043 | sect_offset sect_off |
3044 | = (sect_offset) extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
3045 | type_offset_in_tu | |
3046 | = (cu_offset) extract_unsigned_integer (bytes + 8, 8, | |
3047 | BFD_ENDIAN_LITTLE); | |
1fd400ff TT |
3048 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); |
3049 | bytes += 3 * 8; | |
3050 | ||
52dc124a | 3051 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
1fd400ff | 3052 | struct signatured_type); |
52dc124a | 3053 | sig_type->signature = signature; |
9c541725 | 3054 | sig_type->type_offset_in_tu = type_offset_in_tu; |
3019eac3 | 3055 | sig_type->per_cu.is_debug_types = 1; |
8a0459fd | 3056 | sig_type->per_cu.section = section; |
9c541725 | 3057 | sig_type->per_cu.sect_off = sect_off; |
e3b94546 | 3058 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
52dc124a | 3059 | sig_type->per_cu.v.quick |
1fd400ff TT |
3060 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
3061 | struct dwarf2_per_cu_quick_data); | |
3062 | ||
52dc124a DE |
3063 | slot = htab_find_slot (sig_types_hash, sig_type, INSERT); |
3064 | *slot = sig_type; | |
1fd400ff | 3065 | |
b2bdb8cf | 3066 | dwarf2_per_objfile->all_type_units.push_back (sig_type); |
1fd400ff TT |
3067 | } |
3068 | ||
673bfd45 | 3069 | dwarf2_per_objfile->signatured_types = sig_types_hash; |
1fd400ff TT |
3070 | } |
3071 | ||
927aa2e7 JK |
3072 | /* Create the signatured type hash table from .debug_names. */ |
3073 | ||
3074 | static void | |
3075 | create_signatured_type_table_from_debug_names | |
ed2dc618 | 3076 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
3077 | const mapped_debug_names &map, |
3078 | struct dwarf2_section_info *section, | |
3079 | struct dwarf2_section_info *abbrev_section) | |
3080 | { | |
ed2dc618 SM |
3081 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3082 | ||
927aa2e7 JK |
3083 | dwarf2_read_section (objfile, section); |
3084 | dwarf2_read_section (objfile, abbrev_section); | |
3085 | ||
b2bdb8cf SM |
3086 | gdb_assert (dwarf2_per_objfile->all_type_units.empty ()); |
3087 | dwarf2_per_objfile->all_type_units.reserve (map.tu_count); | |
927aa2e7 JK |
3088 | |
3089 | htab_t sig_types_hash = allocate_signatured_type_table (objfile); | |
3090 | ||
3091 | for (uint32_t i = 0; i < map.tu_count; ++i) | |
3092 | { | |
3093 | struct signatured_type *sig_type; | |
927aa2e7 | 3094 | void **slot; |
927aa2e7 JK |
3095 | |
3096 | sect_offset sect_off | |
3097 | = (sect_offset) (extract_unsigned_integer | |
3098 | (map.tu_table_reordered + i * map.offset_size, | |
3099 | map.offset_size, | |
3100 | map.dwarf5_byte_order)); | |
3101 | ||
3102 | comp_unit_head cu_header; | |
ed2dc618 SM |
3103 | read_and_check_comp_unit_head (dwarf2_per_objfile, &cu_header, section, |
3104 | abbrev_section, | |
927aa2e7 JK |
3105 | section->buffer + to_underlying (sect_off), |
3106 | rcuh_kind::TYPE); | |
3107 | ||
3108 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
3109 | struct signatured_type); | |
3110 | sig_type->signature = cu_header.signature; | |
3111 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
3112 | sig_type->per_cu.is_debug_types = 1; | |
3113 | sig_type->per_cu.section = section; | |
3114 | sig_type->per_cu.sect_off = sect_off; | |
e3b94546 | 3115 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
927aa2e7 JK |
3116 | sig_type->per_cu.v.quick |
3117 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
3118 | struct dwarf2_per_cu_quick_data); | |
3119 | ||
3120 | slot = htab_find_slot (sig_types_hash, sig_type, INSERT); | |
3121 | *slot = sig_type; | |
3122 | ||
b2bdb8cf | 3123 | dwarf2_per_objfile->all_type_units.push_back (sig_type); |
927aa2e7 JK |
3124 | } |
3125 | ||
3126 | dwarf2_per_objfile->signatured_types = sig_types_hash; | |
3127 | } | |
3128 | ||
9291a0cd TT |
3129 | /* Read the address map data from the mapped index, and use it to |
3130 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 3131 | |
9291a0cd | 3132 | static void |
ed2dc618 SM |
3133 | create_addrmap_from_index (struct dwarf2_per_objfile *dwarf2_per_objfile, |
3134 | struct mapped_index *index) | |
9291a0cd | 3135 | { |
ed2dc618 | 3136 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 3137 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9291a0cd | 3138 | const gdb_byte *iter, *end; |
9291a0cd | 3139 | struct addrmap *mutable_map; |
9291a0cd TT |
3140 | CORE_ADDR baseaddr; |
3141 | ||
8268c778 PA |
3142 | auto_obstack temp_obstack; |
3143 | ||
9291a0cd TT |
3144 | mutable_map = addrmap_create_mutable (&temp_obstack); |
3145 | ||
f00a2de2 PA |
3146 | iter = index->address_table.data (); |
3147 | end = iter + index->address_table.size (); | |
9291a0cd TT |
3148 | |
3149 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
3150 | ||
3151 | while (iter < end) | |
3152 | { | |
3153 | ULONGEST hi, lo, cu_index; | |
3154 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
3155 | iter += 8; | |
3156 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
3157 | iter += 8; | |
3158 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
3159 | iter += 4; | |
f652bce2 | 3160 | |
24a55014 | 3161 | if (lo > hi) |
f652bce2 | 3162 | { |
b98664d3 | 3163 | complaint (_(".gdb_index address table has invalid range (%s - %s)"), |
c0cd8254 | 3164 | hex_string (lo), hex_string (hi)); |
24a55014 | 3165 | continue; |
f652bce2 | 3166 | } |
24a55014 | 3167 | |
b76e467d | 3168 | if (cu_index >= dwarf2_per_objfile->all_comp_units.size ()) |
f652bce2 | 3169 | { |
b98664d3 | 3170 | complaint (_(".gdb_index address table has invalid CU number %u"), |
f652bce2 | 3171 | (unsigned) cu_index); |
24a55014 | 3172 | continue; |
f652bce2 | 3173 | } |
24a55014 | 3174 | |
3e29f34a MR |
3175 | lo = gdbarch_adjust_dwarf2_addr (gdbarch, lo + baseaddr); |
3176 | hi = gdbarch_adjust_dwarf2_addr (gdbarch, hi + baseaddr); | |
ed2dc618 | 3177 | addrmap_set_empty (mutable_map, lo, hi - 1, |
ff4c9fec | 3178 | dwarf2_per_objfile->get_cu (cu_index)); |
9291a0cd TT |
3179 | } |
3180 | ||
3181 | objfile->psymtabs_addrmap = addrmap_create_fixed (mutable_map, | |
3182 | &objfile->objfile_obstack); | |
9291a0cd TT |
3183 | } |
3184 | ||
927aa2e7 JK |
3185 | /* Read the address map data from DWARF-5 .debug_aranges, and use it to |
3186 | populate the objfile's psymtabs_addrmap. */ | |
3187 | ||
3188 | static void | |
ed2dc618 | 3189 | create_addrmap_from_aranges (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
3190 | struct dwarf2_section_info *section) |
3191 | { | |
ed2dc618 | 3192 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
927aa2e7 JK |
3193 | bfd *abfd = objfile->obfd; |
3194 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
3195 | const CORE_ADDR baseaddr = ANOFFSET (objfile->section_offsets, | |
3196 | SECT_OFF_TEXT (objfile)); | |
3197 | ||
3198 | auto_obstack temp_obstack; | |
3199 | addrmap *mutable_map = addrmap_create_mutable (&temp_obstack); | |
3200 | ||
3201 | std::unordered_map<sect_offset, | |
3202 | dwarf2_per_cu_data *, | |
3203 | gdb::hash_enum<sect_offset>> | |
3204 | debug_info_offset_to_per_cu; | |
b76e467d | 3205 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 3206 | { |
927aa2e7 JK |
3207 | const auto insertpair |
3208 | = debug_info_offset_to_per_cu.emplace (per_cu->sect_off, per_cu); | |
3209 | if (!insertpair.second) | |
3210 | { | |
3211 | warning (_("Section .debug_aranges in %s has duplicate " | |
9d8780f0 SM |
3212 | "debug_info_offset %s, ignoring .debug_aranges."), |
3213 | objfile_name (objfile), sect_offset_str (per_cu->sect_off)); | |
927aa2e7 JK |
3214 | return; |
3215 | } | |
3216 | } | |
3217 | ||
3218 | dwarf2_read_section (objfile, section); | |
3219 | ||
3220 | const bfd_endian dwarf5_byte_order = gdbarch_byte_order (gdbarch); | |
3221 | ||
3222 | const gdb_byte *addr = section->buffer; | |
3223 | ||
3224 | while (addr < section->buffer + section->size) | |
3225 | { | |
3226 | const gdb_byte *const entry_addr = addr; | |
3227 | unsigned int bytes_read; | |
3228 | ||
3229 | const LONGEST entry_length = read_initial_length (abfd, addr, | |
3230 | &bytes_read); | |
3231 | addr += bytes_read; | |
3232 | ||
3233 | const gdb_byte *const entry_end = addr + entry_length; | |
3234 | const bool dwarf5_is_dwarf64 = bytes_read != 4; | |
3235 | const uint8_t offset_size = dwarf5_is_dwarf64 ? 8 : 4; | |
3236 | if (addr + entry_length > section->buffer + section->size) | |
3237 | { | |
3238 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3239 | "length %s exceeds section length %s, " | |
3240 | "ignoring .debug_aranges."), | |
3241 | objfile_name (objfile), entry_addr - section->buffer, | |
3242 | plongest (bytes_read + entry_length), | |
3243 | pulongest (section->size)); | |
3244 | return; | |
3245 | } | |
3246 | ||
3247 | /* The version number. */ | |
3248 | const uint16_t version = read_2_bytes (abfd, addr); | |
3249 | addr += 2; | |
3250 | if (version != 2) | |
3251 | { | |
3252 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3253 | "has unsupported version %d, ignoring .debug_aranges."), | |
3254 | objfile_name (objfile), entry_addr - section->buffer, | |
3255 | version); | |
3256 | return; | |
3257 | } | |
3258 | ||
3259 | const uint64_t debug_info_offset | |
3260 | = extract_unsigned_integer (addr, offset_size, dwarf5_byte_order); | |
3261 | addr += offset_size; | |
3262 | const auto per_cu_it | |
3263 | = debug_info_offset_to_per_cu.find (sect_offset (debug_info_offset)); | |
3264 | if (per_cu_it == debug_info_offset_to_per_cu.cend ()) | |
3265 | { | |
3266 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3267 | "debug_info_offset %s does not exists, " | |
3268 | "ignoring .debug_aranges."), | |
3269 | objfile_name (objfile), entry_addr - section->buffer, | |
3270 | pulongest (debug_info_offset)); | |
3271 | return; | |
3272 | } | |
3273 | dwarf2_per_cu_data *const per_cu = per_cu_it->second; | |
3274 | ||
3275 | const uint8_t address_size = *addr++; | |
3276 | if (address_size < 1 || address_size > 8) | |
3277 | { | |
3278 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3279 | "address_size %u is invalid, ignoring .debug_aranges."), | |
3280 | objfile_name (objfile), entry_addr - section->buffer, | |
3281 | address_size); | |
3282 | return; | |
3283 | } | |
3284 | ||
3285 | const uint8_t segment_selector_size = *addr++; | |
3286 | if (segment_selector_size != 0) | |
3287 | { | |
3288 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3289 | "segment_selector_size %u is not supported, " | |
3290 | "ignoring .debug_aranges."), | |
3291 | objfile_name (objfile), entry_addr - section->buffer, | |
3292 | segment_selector_size); | |
3293 | return; | |
3294 | } | |
3295 | ||
3296 | /* Must pad to an alignment boundary that is twice the address | |
3297 | size. It is undocumented by the DWARF standard but GCC does | |
3298 | use it. */ | |
3299 | for (size_t padding = ((-(addr - section->buffer)) | |
3300 | & (2 * address_size - 1)); | |
3301 | padding > 0; padding--) | |
3302 | if (*addr++ != 0) | |
3303 | { | |
3304 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3305 | "padding is not zero, ignoring .debug_aranges."), | |
3306 | objfile_name (objfile), entry_addr - section->buffer); | |
3307 | return; | |
3308 | } | |
3309 | ||
3310 | for (;;) | |
3311 | { | |
3312 | if (addr + 2 * address_size > entry_end) | |
3313 | { | |
3314 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3315 | "address list is not properly terminated, " | |
3316 | "ignoring .debug_aranges."), | |
3317 | objfile_name (objfile), entry_addr - section->buffer); | |
3318 | return; | |
3319 | } | |
3320 | ULONGEST start = extract_unsigned_integer (addr, address_size, | |
3321 | dwarf5_byte_order); | |
3322 | addr += address_size; | |
3323 | ULONGEST length = extract_unsigned_integer (addr, address_size, | |
3324 | dwarf5_byte_order); | |
3325 | addr += address_size; | |
3326 | if (start == 0 && length == 0) | |
3327 | break; | |
3328 | if (start == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
3329 | { | |
3330 | /* Symbol was eliminated due to a COMDAT group. */ | |
3331 | continue; | |
3332 | } | |
3333 | ULONGEST end = start + length; | |
3334 | start = gdbarch_adjust_dwarf2_addr (gdbarch, start + baseaddr); | |
3335 | end = gdbarch_adjust_dwarf2_addr (gdbarch, end + baseaddr); | |
3336 | addrmap_set_empty (mutable_map, start, end - 1, per_cu); | |
3337 | } | |
3338 | } | |
3339 | ||
3340 | objfile->psymtabs_addrmap = addrmap_create_fixed (mutable_map, | |
3341 | &objfile->objfile_obstack); | |
3342 | } | |
3343 | ||
9291a0cd TT |
3344 | /* Find a slot in the mapped index INDEX for the object named NAME. |
3345 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
109483d9 PA |
3346 | constant pool and return true. If NAME cannot be found, return |
3347 | false. */ | |
2fdf6df6 | 3348 | |
109483d9 | 3349 | static bool |
9291a0cd TT |
3350 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, |
3351 | offset_type **vec_out) | |
3352 | { | |
0cf03b49 | 3353 | offset_type hash; |
9291a0cd | 3354 | offset_type slot, step; |
559a7a62 | 3355 | int (*cmp) (const char *, const char *); |
9291a0cd | 3356 | |
791afaa2 | 3357 | gdb::unique_xmalloc_ptr<char> without_params; |
0cf03b49 | 3358 | if (current_language->la_language == language_cplus |
45280282 IB |
3359 | || current_language->la_language == language_fortran |
3360 | || current_language->la_language == language_d) | |
0cf03b49 JK |
3361 | { |
3362 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
3363 | not contain any. */ | |
a8719064 | 3364 | |
72998fb3 | 3365 | if (strchr (name, '(') != NULL) |
0cf03b49 | 3366 | { |
109483d9 | 3367 | without_params = cp_remove_params (name); |
0cf03b49 | 3368 | |
72998fb3 | 3369 | if (without_params != NULL) |
791afaa2 | 3370 | name = without_params.get (); |
0cf03b49 JK |
3371 | } |
3372 | } | |
3373 | ||
559a7a62 | 3374 | /* Index version 4 did not support case insensitive searches. But the |
feea76c2 | 3375 | indices for case insensitive languages are built in lowercase, therefore |
559a7a62 JK |
3376 | simulate our NAME being searched is also lowercased. */ |
3377 | hash = mapped_index_string_hash ((index->version == 4 | |
3378 | && case_sensitivity == case_sensitive_off | |
3379 | ? 5 : index->version), | |
3380 | name); | |
3381 | ||
f00a2de2 PA |
3382 | slot = hash & (index->symbol_table.size () - 1); |
3383 | step = ((hash * 17) & (index->symbol_table.size () - 1)) | 1; | |
559a7a62 | 3384 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
3385 | |
3386 | for (;;) | |
3387 | { | |
9291a0cd | 3388 | const char *str; |
f00a2de2 PA |
3389 | |
3390 | const auto &bucket = index->symbol_table[slot]; | |
3391 | if (bucket.name == 0 && bucket.vec == 0) | |
109483d9 | 3392 | return false; |
9291a0cd | 3393 | |
f00a2de2 | 3394 | str = index->constant_pool + MAYBE_SWAP (bucket.name); |
559a7a62 | 3395 | if (!cmp (name, str)) |
9291a0cd TT |
3396 | { |
3397 | *vec_out = (offset_type *) (index->constant_pool | |
f00a2de2 | 3398 | + MAYBE_SWAP (bucket.vec)); |
109483d9 | 3399 | return true; |
9291a0cd TT |
3400 | } |
3401 | ||
f00a2de2 | 3402 | slot = (slot + step) & (index->symbol_table.size () - 1); |
9291a0cd TT |
3403 | } |
3404 | } | |
3405 | ||
2ec9a5e0 TT |
3406 | /* A helper function that reads the .gdb_index from SECTION and fills |
3407 | in MAP. FILENAME is the name of the file containing the section; | |
d33bc52e | 3408 | it is used for error reporting. DEPRECATED_OK is true if it is |
2ec9a5e0 TT |
3409 | ok to use deprecated sections. |
3410 | ||
3411 | CU_LIST, CU_LIST_ELEMENTS, TYPES_LIST, and TYPES_LIST_ELEMENTS are | |
3412 | out parameters that are filled in with information about the CU and | |
3413 | TU lists in the section. | |
3414 | ||
3415 | Returns 1 if all went well, 0 otherwise. */ | |
2fdf6df6 | 3416 | |
d33bc52e | 3417 | static bool |
7b23e087 SM |
3418 | read_gdb_index_from_section (struct objfile *objfile, |
3419 | const char *filename, | |
3420 | bool deprecated_ok, | |
3421 | struct dwarf2_section_info *section, | |
3422 | struct mapped_index *map, | |
3423 | const gdb_byte **cu_list, | |
3424 | offset_type *cu_list_elements, | |
3425 | const gdb_byte **types_list, | |
3426 | offset_type *types_list_elements) | |
9291a0cd | 3427 | { |
948f8e3d | 3428 | const gdb_byte *addr; |
2ec9a5e0 | 3429 | offset_type version; |
b3b272e1 | 3430 | offset_type *metadata; |
1fd400ff | 3431 | int i; |
9291a0cd | 3432 | |
2ec9a5e0 | 3433 | if (dwarf2_section_empty_p (section)) |
9291a0cd | 3434 | return 0; |
82430852 JK |
3435 | |
3436 | /* Older elfutils strip versions could keep the section in the main | |
3437 | executable while splitting it for the separate debug info file. */ | |
a32a8923 | 3438 | if ((get_section_flags (section) & SEC_HAS_CONTENTS) == 0) |
82430852 JK |
3439 | return 0; |
3440 | ||
2ec9a5e0 | 3441 | dwarf2_read_section (objfile, section); |
9291a0cd | 3442 | |
2ec9a5e0 | 3443 | addr = section->buffer; |
9291a0cd | 3444 | /* Version check. */ |
1fd400ff | 3445 | version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 3446 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 3447 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 3448 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 3449 | indices. */ |
831adc1f | 3450 | if (version < 4) |
481860b3 GB |
3451 | { |
3452 | static int warning_printed = 0; | |
3453 | if (!warning_printed) | |
3454 | { | |
3455 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2ec9a5e0 | 3456 | filename); |
481860b3 GB |
3457 | warning_printed = 1; |
3458 | } | |
3459 | return 0; | |
3460 | } | |
3461 | /* Index version 4 uses a different hash function than index version | |
3462 | 5 and later. | |
3463 | ||
3464 | Versions earlier than 6 did not emit psymbols for inlined | |
3465 | functions. Using these files will cause GDB not to be able to | |
3466 | set breakpoints on inlined functions by name, so we ignore these | |
e615022a DE |
3467 | indices unless the user has done |
3468 | "set use-deprecated-index-sections on". */ | |
2ec9a5e0 | 3469 | if (version < 6 && !deprecated_ok) |
481860b3 GB |
3470 | { |
3471 | static int warning_printed = 0; | |
3472 | if (!warning_printed) | |
3473 | { | |
e615022a DE |
3474 | warning (_("\ |
3475 | Skipping deprecated .gdb_index section in %s.\n\ | |
3476 | Do \"set use-deprecated-index-sections on\" before the file is read\n\ | |
3477 | to use the section anyway."), | |
2ec9a5e0 | 3478 | filename); |
481860b3 GB |
3479 | warning_printed = 1; |
3480 | } | |
3481 | return 0; | |
3482 | } | |
796a7ff8 | 3483 | /* Version 7 indices generated by gold refer to the CU for a symbol instead |
8943b874 DE |
3484 | of the TU (for symbols coming from TUs), |
3485 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. | |
3486 | Plus gold-generated indices can have duplicate entries for global symbols, | |
3487 | http://sourceware.org/bugzilla/show_bug.cgi?id=15646. | |
3488 | These are just performance bugs, and we can't distinguish gdb-generated | |
3489 | indices from gold-generated ones, so issue no warning here. */ | |
796a7ff8 | 3490 | |
481860b3 | 3491 | /* Indexes with higher version than the one supported by GDB may be no |
594e8718 | 3492 | longer backward compatible. */ |
796a7ff8 | 3493 | if (version > 8) |
594e8718 | 3494 | return 0; |
9291a0cd | 3495 | |
559a7a62 | 3496 | map->version = version; |
9291a0cd TT |
3497 | |
3498 | metadata = (offset_type *) (addr + sizeof (offset_type)); | |
1fd400ff TT |
3499 | |
3500 | i = 0; | |
2ec9a5e0 TT |
3501 | *cu_list = addr + MAYBE_SWAP (metadata[i]); |
3502 | *cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
3503 | / 8); | |
1fd400ff TT |
3504 | ++i; |
3505 | ||
2ec9a5e0 TT |
3506 | *types_list = addr + MAYBE_SWAP (metadata[i]); |
3507 | *types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
3508 | - MAYBE_SWAP (metadata[i])) | |
3509 | / 8); | |
987d643c | 3510 | ++i; |
1fd400ff | 3511 | |
f00a2de2 PA |
3512 | const gdb_byte *address_table = addr + MAYBE_SWAP (metadata[i]); |
3513 | const gdb_byte *address_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
3514 | map->address_table | |
3515 | = gdb::array_view<const gdb_byte> (address_table, address_table_end); | |
1fd400ff TT |
3516 | ++i; |
3517 | ||
f00a2de2 PA |
3518 | const gdb_byte *symbol_table = addr + MAYBE_SWAP (metadata[i]); |
3519 | const gdb_byte *symbol_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
3520 | map->symbol_table | |
3521 | = gdb::array_view<mapped_index::symbol_table_slot> | |
3522 | ((mapped_index::symbol_table_slot *) symbol_table, | |
3523 | (mapped_index::symbol_table_slot *) symbol_table_end); | |
9291a0cd | 3524 | |
f00a2de2 | 3525 | ++i; |
f9d83a0b | 3526 | map->constant_pool = (char *) (addr + MAYBE_SWAP (metadata[i])); |
1fd400ff | 3527 | |
2ec9a5e0 TT |
3528 | return 1; |
3529 | } | |
3530 | ||
927aa2e7 | 3531 | /* Read .gdb_index. If everything went ok, initialize the "quick" |
2ec9a5e0 TT |
3532 | elements of all the CUs and return 1. Otherwise, return 0. */ |
3533 | ||
3534 | static int | |
7b23e087 | 3535 | dwarf2_read_gdb_index (struct dwarf2_per_objfile *dwarf2_per_objfile) |
2ec9a5e0 | 3536 | { |
2ec9a5e0 TT |
3537 | const gdb_byte *cu_list, *types_list, *dwz_list = NULL; |
3538 | offset_type cu_list_elements, types_list_elements, dwz_list_elements = 0; | |
4db1a1dc | 3539 | struct dwz_file *dwz; |
12359b5e | 3540 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
2ec9a5e0 | 3541 | |
3063847f | 3542 | std::unique_ptr<struct mapped_index> map (new struct mapped_index); |
7b23e087 SM |
3543 | if (!read_gdb_index_from_section (objfile, objfile_name (objfile), |
3544 | use_deprecated_index_sections, | |
3545 | &dwarf2_per_objfile->gdb_index, map.get (), | |
3546 | &cu_list, &cu_list_elements, | |
3547 | &types_list, &types_list_elements)) | |
2ec9a5e0 TT |
3548 | return 0; |
3549 | ||
0fefef59 | 3550 | /* Don't use the index if it's empty. */ |
3063847f | 3551 | if (map->symbol_table.empty ()) |
0fefef59 DE |
3552 | return 0; |
3553 | ||
2ec9a5e0 TT |
3554 | /* If there is a .dwz file, read it so we can get its CU list as |
3555 | well. */ | |
ed2dc618 | 3556 | dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
4db1a1dc | 3557 | if (dwz != NULL) |
2ec9a5e0 | 3558 | { |
2ec9a5e0 TT |
3559 | struct mapped_index dwz_map; |
3560 | const gdb_byte *dwz_types_ignore; | |
3561 | offset_type dwz_types_elements_ignore; | |
3562 | ||
7b23e087 SM |
3563 | if (!read_gdb_index_from_section (objfile, |
3564 | bfd_get_filename (dwz->dwz_bfd), 1, | |
3565 | &dwz->gdb_index, &dwz_map, | |
3566 | &dwz_list, &dwz_list_elements, | |
3567 | &dwz_types_ignore, | |
3568 | &dwz_types_elements_ignore)) | |
2ec9a5e0 TT |
3569 | { |
3570 | warning (_("could not read '.gdb_index' section from %s; skipping"), | |
3571 | bfd_get_filename (dwz->dwz_bfd)); | |
3572 | return 0; | |
3573 | } | |
3574 | } | |
3575 | ||
12359b5e SM |
3576 | create_cus_from_index (dwarf2_per_objfile, cu_list, cu_list_elements, |
3577 | dwz_list, dwz_list_elements); | |
1fd400ff | 3578 | |
8b70b953 TT |
3579 | if (types_list_elements) |
3580 | { | |
3581 | struct dwarf2_section_info *section; | |
3582 | ||
3583 | /* We can only handle a single .debug_types when we have an | |
3584 | index. */ | |
3585 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) != 1) | |
3586 | return 0; | |
3587 | ||
3588 | section = VEC_index (dwarf2_section_info_def, | |
3589 | dwarf2_per_objfile->types, 0); | |
3590 | ||
12359b5e SM |
3591 | create_signatured_type_table_from_index (dwarf2_per_objfile, section, |
3592 | types_list, types_list_elements); | |
8b70b953 | 3593 | } |
9291a0cd | 3594 | |
3063847f | 3595 | create_addrmap_from_index (dwarf2_per_objfile, map.get ()); |
9291a0cd | 3596 | |
3063847f | 3597 | dwarf2_per_objfile->index_table = std::move (map); |
9291a0cd | 3598 | dwarf2_per_objfile->using_index = 1; |
7b9f3c50 | 3599 | dwarf2_per_objfile->quick_file_names_table = |
b76e467d | 3600 | create_quick_file_names_table (dwarf2_per_objfile->all_comp_units.size ()); |
9291a0cd TT |
3601 | |
3602 | return 1; | |
3603 | } | |
3604 | ||
dee91e82 | 3605 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 3606 | |
dee91e82 DE |
3607 | static void |
3608 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
d521ce57 | 3609 | const gdb_byte *info_ptr, |
dee91e82 DE |
3610 | struct die_info *comp_unit_die, |
3611 | int has_children, | |
3612 | void *data) | |
9291a0cd | 3613 | { |
dee91e82 | 3614 | struct dwarf2_cu *cu = reader->cu; |
ed2dc618 | 3615 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; |
518817b3 SM |
3616 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3617 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 3618 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
094b34ac | 3619 | struct dwarf2_per_cu_data *lh_cu; |
9291a0cd | 3620 | struct attribute *attr; |
dee91e82 | 3621 | int i; |
7b9f3c50 DE |
3622 | void **slot; |
3623 | struct quick_file_names *qfn; | |
9291a0cd | 3624 | |
0186c6a7 DE |
3625 | gdb_assert (! this_cu->is_debug_types); |
3626 | ||
07261596 TT |
3627 | /* Our callers never want to match partial units -- instead they |
3628 | will match the enclosing full CU. */ | |
3629 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
3630 | { | |
3631 | this_cu->v.quick->no_file_data = 1; | |
3632 | return; | |
3633 | } | |
3634 | ||
0186c6a7 | 3635 | lh_cu = this_cu; |
7b9f3c50 | 3636 | slot = NULL; |
dee91e82 | 3637 | |
fff8551c | 3638 | line_header_up lh; |
9c541725 | 3639 | sect_offset line_offset {}; |
fff8551c | 3640 | |
dee91e82 | 3641 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); |
9291a0cd TT |
3642 | if (attr) |
3643 | { | |
7b9f3c50 DE |
3644 | struct quick_file_names find_entry; |
3645 | ||
9c541725 | 3646 | line_offset = (sect_offset) DW_UNSND (attr); |
7b9f3c50 DE |
3647 | |
3648 | /* We may have already read in this line header (TU line header sharing). | |
3649 | If we have we're done. */ | |
094b34ac | 3650 | find_entry.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3651 | find_entry.hash.line_sect_off = line_offset; |
7b9f3c50 DE |
3652 | slot = htab_find_slot (dwarf2_per_objfile->quick_file_names_table, |
3653 | &find_entry, INSERT); | |
3654 | if (*slot != NULL) | |
3655 | { | |
9a3c8263 | 3656 | lh_cu->v.quick->file_names = (struct quick_file_names *) *slot; |
dee91e82 | 3657 | return; |
7b9f3c50 DE |
3658 | } |
3659 | ||
3019eac3 | 3660 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
3661 | } |
3662 | if (lh == NULL) | |
3663 | { | |
094b34ac | 3664 | lh_cu->v.quick->no_file_data = 1; |
dee91e82 | 3665 | return; |
9291a0cd TT |
3666 | } |
3667 | ||
8d749320 | 3668 | qfn = XOBNEW (&objfile->objfile_obstack, struct quick_file_names); |
094b34ac | 3669 | qfn->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3670 | qfn->hash.line_sect_off = line_offset; |
7b9f3c50 DE |
3671 | gdb_assert (slot != NULL); |
3672 | *slot = qfn; | |
9291a0cd | 3673 | |
d721ba37 | 3674 | file_and_directory fnd = find_file_and_directory (comp_unit_die, cu); |
9291a0cd | 3675 | |
fff8551c | 3676 | qfn->num_file_names = lh->file_names.size (); |
8d749320 | 3677 | qfn->file_names = |
fff8551c PA |
3678 | XOBNEWVEC (&objfile->objfile_obstack, const char *, lh->file_names.size ()); |
3679 | for (i = 0; i < lh->file_names.size (); ++i) | |
3680 | qfn->file_names[i] = file_full_name (i + 1, lh.get (), fnd.comp_dir); | |
7b9f3c50 | 3681 | qfn->real_names = NULL; |
9291a0cd | 3682 | |
094b34ac | 3683 | lh_cu->v.quick->file_names = qfn; |
dee91e82 DE |
3684 | } |
3685 | ||
3686 | /* A helper for the "quick" functions which attempts to read the line | |
3687 | table for THIS_CU. */ | |
3688 | ||
3689 | static struct quick_file_names * | |
e4a48d9d | 3690 | dw2_get_file_names (struct dwarf2_per_cu_data *this_cu) |
dee91e82 | 3691 | { |
0186c6a7 DE |
3692 | /* This should never be called for TUs. */ |
3693 | gdb_assert (! this_cu->is_debug_types); | |
3694 | /* Nor type unit groups. */ | |
3695 | gdb_assert (! IS_TYPE_UNIT_GROUP (this_cu)); | |
f4dc4d17 | 3696 | |
dee91e82 DE |
3697 | if (this_cu->v.quick->file_names != NULL) |
3698 | return this_cu->v.quick->file_names; | |
3699 | /* If we know there is no line data, no point in looking again. */ | |
3700 | if (this_cu->v.quick->no_file_data) | |
3701 | return NULL; | |
3702 | ||
0186c6a7 | 3703 | init_cutu_and_read_dies_simple (this_cu, dw2_get_file_names_reader, NULL); |
dee91e82 DE |
3704 | |
3705 | if (this_cu->v.quick->no_file_data) | |
3706 | return NULL; | |
3707 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
3708 | } |
3709 | ||
3710 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 3711 | real path for a given file name from the line table. */ |
2fdf6df6 | 3712 | |
9291a0cd | 3713 | static const char * |
7b9f3c50 DE |
3714 | dw2_get_real_path (struct objfile *objfile, |
3715 | struct quick_file_names *qfn, int index) | |
9291a0cd | 3716 | { |
7b9f3c50 DE |
3717 | if (qfn->real_names == NULL) |
3718 | qfn->real_names = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
26f2dc30 | 3719 | qfn->num_file_names, const char *); |
9291a0cd | 3720 | |
7b9f3c50 | 3721 | if (qfn->real_names[index] == NULL) |
14278e1f | 3722 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]).release (); |
9291a0cd | 3723 | |
7b9f3c50 | 3724 | return qfn->real_names[index]; |
9291a0cd TT |
3725 | } |
3726 | ||
3727 | static struct symtab * | |
3728 | dw2_find_last_source_symtab (struct objfile *objfile) | |
3729 | { | |
ed2dc618 SM |
3730 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3731 | = get_dwarf2_per_objfile (objfile); | |
b76e467d | 3732 | dwarf2_per_cu_data *dwarf_cu = dwarf2_per_objfile->all_comp_units.back (); |
58f0c718 | 3733 | compunit_symtab *cust = dw2_instantiate_symtab (dwarf_cu, false); |
ae2de4f8 | 3734 | |
43f3e411 DE |
3735 | if (cust == NULL) |
3736 | return NULL; | |
ed2dc618 | 3737 | |
43f3e411 | 3738 | return compunit_primary_filetab (cust); |
9291a0cd TT |
3739 | } |
3740 | ||
7b9f3c50 DE |
3741 | /* Traversal function for dw2_forget_cached_source_info. */ |
3742 | ||
3743 | static int | |
3744 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 3745 | { |
7b9f3c50 | 3746 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 3747 | |
7b9f3c50 | 3748 | if (file_data->real_names) |
9291a0cd | 3749 | { |
7b9f3c50 | 3750 | int i; |
9291a0cd | 3751 | |
7b9f3c50 | 3752 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 3753 | { |
7b9f3c50 DE |
3754 | xfree ((void*) file_data->real_names[i]); |
3755 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
3756 | } |
3757 | } | |
7b9f3c50 DE |
3758 | |
3759 | return 1; | |
3760 | } | |
3761 | ||
3762 | static void | |
3763 | dw2_forget_cached_source_info (struct objfile *objfile) | |
3764 | { | |
ed2dc618 SM |
3765 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3766 | = get_dwarf2_per_objfile (objfile); | |
7b9f3c50 DE |
3767 | |
3768 | htab_traverse_noresize (dwarf2_per_objfile->quick_file_names_table, | |
3769 | dw2_free_cached_file_names, NULL); | |
9291a0cd TT |
3770 | } |
3771 | ||
f8eba3c6 TT |
3772 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
3773 | the symtabs and calls the iterator. */ | |
3774 | ||
3775 | static int | |
3776 | dw2_map_expand_apply (struct objfile *objfile, | |
3777 | struct dwarf2_per_cu_data *per_cu, | |
f5b95b50 | 3778 | const char *name, const char *real_path, |
14bc53a8 | 3779 | gdb::function_view<bool (symtab *)> callback) |
f8eba3c6 | 3780 | { |
43f3e411 | 3781 | struct compunit_symtab *last_made = objfile->compunit_symtabs; |
f8eba3c6 TT |
3782 | |
3783 | /* Don't visit already-expanded CUs. */ | |
43f3e411 | 3784 | if (per_cu->v.quick->compunit_symtab) |
f8eba3c6 TT |
3785 | return 0; |
3786 | ||
3787 | /* This may expand more than one symtab, and we want to iterate over | |
3788 | all of them. */ | |
58f0c718 | 3789 | dw2_instantiate_symtab (per_cu, false); |
f8eba3c6 | 3790 | |
14bc53a8 PA |
3791 | return iterate_over_some_symtabs (name, real_path, objfile->compunit_symtabs, |
3792 | last_made, callback); | |
f8eba3c6 TT |
3793 | } |
3794 | ||
3795 | /* Implementation of the map_symtabs_matching_filename method. */ | |
3796 | ||
14bc53a8 PA |
3797 | static bool |
3798 | dw2_map_symtabs_matching_filename | |
3799 | (struct objfile *objfile, const char *name, const char *real_path, | |
3800 | gdb::function_view<bool (symtab *)> callback) | |
9291a0cd | 3801 | { |
c011a4f4 | 3802 | const char *name_basename = lbasename (name); |
ed2dc618 SM |
3803 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3804 | = get_dwarf2_per_objfile (objfile); | |
ae2de4f8 | 3805 | |
848e3e78 DE |
3806 | /* The rule is CUs specify all the files, including those used by |
3807 | any TU, so there's no need to scan TUs here. */ | |
f4dc4d17 | 3808 | |
b76e467d | 3809 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
9291a0cd | 3810 | { |
3d7bb9d9 | 3811 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 3812 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
3813 | continue; |
3814 | ||
b76e467d | 3815 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 3816 | if (file_data == NULL) |
9291a0cd TT |
3817 | continue; |
3818 | ||
b76e467d | 3819 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3820 | { |
7b9f3c50 | 3821 | const char *this_name = file_data->file_names[j]; |
da235a7c | 3822 | const char *this_real_name; |
9291a0cd | 3823 | |
af529f8f | 3824 | if (compare_filenames_for_search (this_name, name)) |
9291a0cd | 3825 | { |
f5b95b50 | 3826 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3827 | callback)) |
3828 | return true; | |
288e77a7 | 3829 | continue; |
4aac40c8 | 3830 | } |
9291a0cd | 3831 | |
c011a4f4 DE |
3832 | /* Before we invoke realpath, which can get expensive when many |
3833 | files are involved, do a quick comparison of the basenames. */ | |
3834 | if (! basenames_may_differ | |
3835 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
3836 | continue; | |
3837 | ||
da235a7c JK |
3838 | this_real_name = dw2_get_real_path (objfile, file_data, j); |
3839 | if (compare_filenames_for_search (this_real_name, name)) | |
9291a0cd | 3840 | { |
da235a7c | 3841 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3842 | callback)) |
3843 | return true; | |
288e77a7 | 3844 | continue; |
da235a7c | 3845 | } |
9291a0cd | 3846 | |
da235a7c JK |
3847 | if (real_path != NULL) |
3848 | { | |
af529f8f JK |
3849 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); |
3850 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
7b9f3c50 | 3851 | if (this_real_name != NULL |
af529f8f | 3852 | && FILENAME_CMP (real_path, this_real_name) == 0) |
9291a0cd | 3853 | { |
f5b95b50 | 3854 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3855 | callback)) |
3856 | return true; | |
288e77a7 | 3857 | continue; |
9291a0cd TT |
3858 | } |
3859 | } | |
3860 | } | |
3861 | } | |
3862 | ||
14bc53a8 | 3863 | return false; |
9291a0cd TT |
3864 | } |
3865 | ||
da51c347 DE |
3866 | /* Struct used to manage iterating over all CUs looking for a symbol. */ |
3867 | ||
3868 | struct dw2_symtab_iterator | |
9291a0cd | 3869 | { |
ed2dc618 SM |
3870 | /* The dwarf2_per_objfile owning the CUs we are iterating on. */ |
3871 | struct dwarf2_per_objfile *dwarf2_per_objfile; | |
da51c347 DE |
3872 | /* If non-zero, only look for symbols that match BLOCK_INDEX. */ |
3873 | int want_specific_block; | |
3874 | /* One of GLOBAL_BLOCK or STATIC_BLOCK. | |
3875 | Unused if !WANT_SPECIFIC_BLOCK. */ | |
3876 | int block_index; | |
3877 | /* The kind of symbol we're looking for. */ | |
3878 | domain_enum domain; | |
3879 | /* The list of CUs from the index entry of the symbol, | |
3880 | or NULL if not found. */ | |
3881 | offset_type *vec; | |
3882 | /* The next element in VEC to look at. */ | |
3883 | int next; | |
3884 | /* The number of elements in VEC, or zero if there is no match. */ | |
3885 | int length; | |
8943b874 DE |
3886 | /* Have we seen a global version of the symbol? |
3887 | If so we can ignore all further global instances. | |
3888 | This is to work around gold/15646, inefficient gold-generated | |
3889 | indices. */ | |
3890 | int global_seen; | |
da51c347 | 3891 | }; |
9291a0cd | 3892 | |
da51c347 DE |
3893 | /* Initialize the index symtab iterator ITER. |
3894 | If WANT_SPECIFIC_BLOCK is non-zero, only look for symbols | |
3895 | in block BLOCK_INDEX. Otherwise BLOCK_INDEX is ignored. */ | |
2fdf6df6 | 3896 | |
9291a0cd | 3897 | static void |
da51c347 | 3898 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, |
ed2dc618 | 3899 | struct dwarf2_per_objfile *dwarf2_per_objfile, |
da51c347 DE |
3900 | int want_specific_block, |
3901 | int block_index, | |
3902 | domain_enum domain, | |
3903 | const char *name) | |
3904 | { | |
ed2dc618 | 3905 | iter->dwarf2_per_objfile = dwarf2_per_objfile; |
da51c347 DE |
3906 | iter->want_specific_block = want_specific_block; |
3907 | iter->block_index = block_index; | |
3908 | iter->domain = domain; | |
3909 | iter->next = 0; | |
8943b874 | 3910 | iter->global_seen = 0; |
da51c347 | 3911 | |
3063847f | 3912 | mapped_index *index = dwarf2_per_objfile->index_table.get (); |
ed2dc618 SM |
3913 | |
3914 | /* index is NULL if OBJF_READNOW. */ | |
3915 | if (index != NULL && find_slot_in_mapped_hash (index, name, &iter->vec)) | |
da51c347 DE |
3916 | iter->length = MAYBE_SWAP (*iter->vec); |
3917 | else | |
3918 | { | |
3919 | iter->vec = NULL; | |
3920 | iter->length = 0; | |
3921 | } | |
3922 | } | |
3923 | ||
3924 | /* Return the next matching CU or NULL if there are no more. */ | |
3925 | ||
3926 | static struct dwarf2_per_cu_data * | |
3927 | dw2_symtab_iter_next (struct dw2_symtab_iterator *iter) | |
3928 | { | |
ed2dc618 SM |
3929 | struct dwarf2_per_objfile *dwarf2_per_objfile = iter->dwarf2_per_objfile; |
3930 | ||
da51c347 DE |
3931 | for ( ; iter->next < iter->length; ++iter->next) |
3932 | { | |
3933 | offset_type cu_index_and_attrs = | |
3934 | MAYBE_SWAP (iter->vec[iter->next + 1]); | |
3935 | offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
da51c347 DE |
3936 | int want_static = iter->block_index != GLOBAL_BLOCK; |
3937 | /* This value is only valid for index versions >= 7. */ | |
3938 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
3939 | gdb_index_symbol_kind symbol_kind = | |
3940 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3941 | /* Only check the symbol attributes if they're present. | |
3942 | Indices prior to version 7 don't record them, | |
3943 | and indices >= 7 may elide them for certain symbols | |
3944 | (gold does this). */ | |
3945 | int attrs_valid = | |
ed2dc618 | 3946 | (dwarf2_per_objfile->index_table->version >= 7 |
da51c347 DE |
3947 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); |
3948 | ||
3190f0c6 | 3949 | /* Don't crash on bad data. */ |
b76e467d | 3950 | if (cu_index >= (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 3951 | + dwarf2_per_objfile->all_type_units.size ())) |
3190f0c6 | 3952 | { |
b98664d3 | 3953 | complaint (_(".gdb_index entry has bad CU index" |
4262abfb JK |
3954 | " [in module %s]"), |
3955 | objfile_name (dwarf2_per_objfile->objfile)); | |
3190f0c6 DE |
3956 | continue; |
3957 | } | |
3958 | ||
ff4c9fec | 3959 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (cu_index); |
3190f0c6 | 3960 | |
da51c347 | 3961 | /* Skip if already read in. */ |
43f3e411 | 3962 | if (per_cu->v.quick->compunit_symtab) |
da51c347 DE |
3963 | continue; |
3964 | ||
8943b874 DE |
3965 | /* Check static vs global. */ |
3966 | if (attrs_valid) | |
3967 | { | |
3968 | if (iter->want_specific_block | |
3969 | && want_static != is_static) | |
3970 | continue; | |
3971 | /* Work around gold/15646. */ | |
3972 | if (!is_static && iter->global_seen) | |
3973 | continue; | |
3974 | if (!is_static) | |
3975 | iter->global_seen = 1; | |
3976 | } | |
da51c347 DE |
3977 | |
3978 | /* Only check the symbol's kind if it has one. */ | |
3979 | if (attrs_valid) | |
3980 | { | |
3981 | switch (iter->domain) | |
3982 | { | |
3983 | case VAR_DOMAIN: | |
3984 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
3985 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
3986 | /* Some types are also in VAR_DOMAIN. */ | |
3987 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3988 | continue; | |
3989 | break; | |
3990 | case STRUCT_DOMAIN: | |
3991 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3992 | continue; | |
3993 | break; | |
3994 | case LABEL_DOMAIN: | |
3995 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3996 | continue; | |
3997 | break; | |
3998 | default: | |
3999 | break; | |
4000 | } | |
4001 | } | |
4002 | ||
4003 | ++iter->next; | |
4004 | return per_cu; | |
4005 | } | |
4006 | ||
4007 | return NULL; | |
4008 | } | |
4009 | ||
43f3e411 | 4010 | static struct compunit_symtab * |
da51c347 DE |
4011 | dw2_lookup_symbol (struct objfile *objfile, int block_index, |
4012 | const char *name, domain_enum domain) | |
9291a0cd | 4013 | { |
43f3e411 | 4014 | struct compunit_symtab *stab_best = NULL; |
ed2dc618 SM |
4015 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4016 | = get_dwarf2_per_objfile (objfile); | |
9291a0cd | 4017 | |
b5ec771e PA |
4018 | lookup_name_info lookup_name (name, symbol_name_match_type::FULL); |
4019 | ||
ed2dc618 SM |
4020 | struct dw2_symtab_iterator iter; |
4021 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 4022 | |
ed2dc618 | 4023 | dw2_symtab_iter_init (&iter, dwarf2_per_objfile, 1, block_index, domain, name); |
9291a0cd | 4024 | |
ed2dc618 SM |
4025 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
4026 | { | |
4027 | struct symbol *sym, *with_opaque = NULL; | |
58f0c718 | 4028 | struct compunit_symtab *stab = dw2_instantiate_symtab (per_cu, false); |
ed2dc618 SM |
4029 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
4030 | struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); | |
da51c347 | 4031 | |
ed2dc618 SM |
4032 | sym = block_find_symbol (block, name, domain, |
4033 | block_find_non_opaque_type_preferred, | |
4034 | &with_opaque); | |
b2e2f908 | 4035 | |
ed2dc618 SM |
4036 | /* Some caution must be observed with overloaded functions |
4037 | and methods, since the index will not contain any overload | |
4038 | information (but NAME might contain it). */ | |
da51c347 | 4039 | |
ed2dc618 SM |
4040 | if (sym != NULL |
4041 | && SYMBOL_MATCHES_SEARCH_NAME (sym, lookup_name)) | |
4042 | return stab; | |
4043 | if (with_opaque != NULL | |
4044 | && SYMBOL_MATCHES_SEARCH_NAME (with_opaque, lookup_name)) | |
4045 | stab_best = stab; | |
da51c347 | 4046 | |
ed2dc618 | 4047 | /* Keep looking through other CUs. */ |
9291a0cd | 4048 | } |
9291a0cd | 4049 | |
da51c347 | 4050 | return stab_best; |
9291a0cd TT |
4051 | } |
4052 | ||
4053 | static void | |
4054 | dw2_print_stats (struct objfile *objfile) | |
4055 | { | |
ed2dc618 SM |
4056 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4057 | = get_dwarf2_per_objfile (objfile); | |
b76e467d | 4058 | int total = (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 4059 | + dwarf2_per_objfile->all_type_units.size ()); |
ed2dc618 | 4060 | int count = 0; |
9291a0cd | 4061 | |
ed2dc618 | 4062 | for (int i = 0; i < total; ++i) |
9291a0cd | 4063 | { |
ff4c9fec | 4064 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (i); |
9291a0cd | 4065 | |
43f3e411 | 4066 | if (!per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
4067 | ++count; |
4068 | } | |
e4a48d9d | 4069 | printf_filtered (_(" Number of read CUs: %d\n"), total - count); |
9291a0cd TT |
4070 | printf_filtered (_(" Number of unread CUs: %d\n"), count); |
4071 | } | |
4072 | ||
779bd270 DE |
4073 | /* This dumps minimal information about the index. |
4074 | It is called via "mt print objfiles". | |
4075 | One use is to verify .gdb_index has been loaded by the | |
4076 | gdb.dwarf2/gdb-index.exp testcase. */ | |
4077 | ||
9291a0cd TT |
4078 | static void |
4079 | dw2_dump (struct objfile *objfile) | |
4080 | { | |
ed2dc618 SM |
4081 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4082 | = get_dwarf2_per_objfile (objfile); | |
4083 | ||
779bd270 DE |
4084 | gdb_assert (dwarf2_per_objfile->using_index); |
4085 | printf_filtered (".gdb_index:"); | |
4086 | if (dwarf2_per_objfile->index_table != NULL) | |
4087 | { | |
4088 | printf_filtered (" version %d\n", | |
4089 | dwarf2_per_objfile->index_table->version); | |
4090 | } | |
4091 | else | |
4092 | printf_filtered (" faked for \"readnow\"\n"); | |
4093 | printf_filtered ("\n"); | |
9291a0cd TT |
4094 | } |
4095 | ||
4096 | static void | |
3189cb12 DE |
4097 | dw2_relocate (struct objfile *objfile, |
4098 | const struct section_offsets *new_offsets, | |
4099 | const struct section_offsets *delta) | |
9291a0cd TT |
4100 | { |
4101 | /* There's nothing to relocate here. */ | |
4102 | } | |
4103 | ||
4104 | static void | |
4105 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
4106 | const char *func_name) | |
4107 | { | |
ed2dc618 SM |
4108 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4109 | = get_dwarf2_per_objfile (objfile); | |
da51c347 | 4110 | |
ed2dc618 SM |
4111 | struct dw2_symtab_iterator iter; |
4112 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 4113 | |
ed2dc618 SM |
4114 | /* Note: It doesn't matter what we pass for block_index here. */ |
4115 | dw2_symtab_iter_init (&iter, dwarf2_per_objfile, 0, GLOBAL_BLOCK, VAR_DOMAIN, | |
4116 | func_name); | |
da51c347 | 4117 | |
ed2dc618 | 4118 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
58f0c718 | 4119 | dw2_instantiate_symtab (per_cu, false); |
da51c347 | 4120 | |
9291a0cd TT |
4121 | } |
4122 | ||
4123 | static void | |
4124 | dw2_expand_all_symtabs (struct objfile *objfile) | |
4125 | { | |
ed2dc618 SM |
4126 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4127 | = get_dwarf2_per_objfile (objfile); | |
b76e467d | 4128 | int total_units = (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 4129 | + dwarf2_per_objfile->all_type_units.size ()); |
9291a0cd | 4130 | |
ed2dc618 | 4131 | for (int i = 0; i < total_units; ++i) |
9291a0cd | 4132 | { |
ff4c9fec | 4133 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (i); |
9291a0cd | 4134 | |
58f0c718 TT |
4135 | /* We don't want to directly expand a partial CU, because if we |
4136 | read it with the wrong language, then assertion failures can | |
4137 | be triggered later on. See PR symtab/23010. So, tell | |
4138 | dw2_instantiate_symtab to skip partial CUs -- any important | |
4139 | partial CU will be read via DW_TAG_imported_unit anyway. */ | |
4140 | dw2_instantiate_symtab (per_cu, true); | |
9291a0cd TT |
4141 | } |
4142 | } | |
4143 | ||
4144 | static void | |
652a8996 JK |
4145 | dw2_expand_symtabs_with_fullname (struct objfile *objfile, |
4146 | const char *fullname) | |
9291a0cd | 4147 | { |
ed2dc618 SM |
4148 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4149 | = get_dwarf2_per_objfile (objfile); | |
d4637a04 DE |
4150 | |
4151 | /* We don't need to consider type units here. | |
4152 | This is only called for examining code, e.g. expand_line_sal. | |
4153 | There can be an order of magnitude (or more) more type units | |
4154 | than comp units, and we avoid them if we can. */ | |
4155 | ||
b76e467d | 4156 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
9291a0cd | 4157 | { |
3d7bb9d9 | 4158 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 4159 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
4160 | continue; |
4161 | ||
b76e467d | 4162 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 4163 | if (file_data == NULL) |
9291a0cd TT |
4164 | continue; |
4165 | ||
b76e467d | 4166 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 4167 | { |
652a8996 JK |
4168 | const char *this_fullname = file_data->file_names[j]; |
4169 | ||
4170 | if (filename_cmp (this_fullname, fullname) == 0) | |
9291a0cd | 4171 | { |
58f0c718 | 4172 | dw2_instantiate_symtab (per_cu, false); |
9291a0cd TT |
4173 | break; |
4174 | } | |
4175 | } | |
4176 | } | |
4177 | } | |
4178 | ||
9291a0cd | 4179 | static void |
ade7ed9e | 4180 | dw2_map_matching_symbols (struct objfile *objfile, |
fe978cb0 | 4181 | const char * name, domain_enum domain, |
ade7ed9e | 4182 | int global, |
40658b94 PH |
4183 | int (*callback) (struct block *, |
4184 | struct symbol *, void *), | |
b5ec771e | 4185 | void *data, symbol_name_match_type match, |
2edb89d3 | 4186 | symbol_compare_ftype *ordered_compare) |
9291a0cd | 4187 | { |
40658b94 | 4188 | /* Currently unimplemented; used for Ada. The function can be called if the |
a9e6a4bb JK |
4189 | current language is Ada for a non-Ada objfile using GNU index. As Ada |
4190 | does not look for non-Ada symbols this function should just return. */ | |
9291a0cd TT |
4191 | } |
4192 | ||
b5ec771e PA |
4193 | /* Symbol name matcher for .gdb_index names. |
4194 | ||
4195 | Symbol names in .gdb_index have a few particularities: | |
4196 | ||
4197 | - There's no indication of which is the language of each symbol. | |
4198 | ||
4199 | Since each language has its own symbol name matching algorithm, | |
4200 | and we don't know which language is the right one, we must match | |
3f563c84 PA |
4201 | each symbol against all languages. This would be a potential |
4202 | performance problem if it were not mitigated by the | |
4203 | mapped_index::name_components lookup table, which significantly | |
4204 | reduces the number of times we need to call into this matcher, | |
4205 | making it a non-issue. | |
b5ec771e PA |
4206 | |
4207 | - Symbol names in the index have no overload (parameter) | |
4208 | information. I.e., in C++, "foo(int)" and "foo(long)" both | |
4209 | appear as "foo" in the index, for example. | |
4210 | ||
4211 | This means that the lookup names passed to the symbol name | |
4212 | matcher functions must have no parameter information either | |
4213 | because (e.g.) symbol search name "foo" does not match | |
4214 | lookup-name "foo(int)" [while swapping search name for lookup | |
4215 | name would match]. | |
4216 | */ | |
4217 | class gdb_index_symbol_name_matcher | |
4218 | { | |
4219 | public: | |
4220 | /* Prepares the vector of comparison functions for LOOKUP_NAME. */ | |
4221 | gdb_index_symbol_name_matcher (const lookup_name_info &lookup_name); | |
4222 | ||
4223 | /* Walk all the matcher routines and match SYMBOL_NAME against them. | |
4224 | Returns true if any matcher matches. */ | |
4225 | bool matches (const char *symbol_name); | |
4226 | ||
4227 | private: | |
4228 | /* A reference to the lookup name we're matching against. */ | |
4229 | const lookup_name_info &m_lookup_name; | |
4230 | ||
4231 | /* A vector holding all the different symbol name matchers, for all | |
4232 | languages. */ | |
4233 | std::vector<symbol_name_matcher_ftype *> m_symbol_name_matcher_funcs; | |
4234 | }; | |
4235 | ||
4236 | gdb_index_symbol_name_matcher::gdb_index_symbol_name_matcher | |
4237 | (const lookup_name_info &lookup_name) | |
4238 | : m_lookup_name (lookup_name) | |
4239 | { | |
4240 | /* Prepare the vector of comparison functions upfront, to avoid | |
4241 | doing the same work for each symbol. Care is taken to avoid | |
4242 | matching with the same matcher more than once if/when multiple | |
4243 | languages use the same matcher function. */ | |
4244 | auto &matchers = m_symbol_name_matcher_funcs; | |
4245 | matchers.reserve (nr_languages); | |
4246 | ||
4247 | matchers.push_back (default_symbol_name_matcher); | |
4248 | ||
4249 | for (int i = 0; i < nr_languages; i++) | |
4250 | { | |
4251 | const language_defn *lang = language_def ((enum language) i); | |
c63d3e8d | 4252 | symbol_name_matcher_ftype *name_matcher |
618daa93 | 4253 | = get_symbol_name_matcher (lang, m_lookup_name); |
c63d3e8d PA |
4254 | |
4255 | /* Don't insert the same comparison routine more than once. | |
4256 | Note that we do this linear walk instead of a seemingly | |
4257 | cheaper sorted insert, or use a std::set or something like | |
4258 | that, because relative order of function addresses is not | |
4259 | stable. This is not a problem in practice because the number | |
4260 | of supported languages is low, and the cost here is tiny | |
4261 | compared to the number of searches we'll do afterwards using | |
4262 | this object. */ | |
4263 | if (name_matcher != default_symbol_name_matcher | |
4264 | && (std::find (matchers.begin (), matchers.end (), name_matcher) | |
4265 | == matchers.end ())) | |
4266 | matchers.push_back (name_matcher); | |
b5ec771e PA |
4267 | } |
4268 | } | |
4269 | ||
4270 | bool | |
4271 | gdb_index_symbol_name_matcher::matches (const char *symbol_name) | |
4272 | { | |
4273 | for (auto matches_name : m_symbol_name_matcher_funcs) | |
4274 | if (matches_name (symbol_name, m_lookup_name, NULL)) | |
4275 | return true; | |
4276 | ||
4277 | return false; | |
4278 | } | |
4279 | ||
e1ef7d7a PA |
4280 | /* Starting from a search name, return the string that finds the upper |
4281 | bound of all strings that start with SEARCH_NAME in a sorted name | |
4282 | list. Returns the empty string to indicate that the upper bound is | |
4283 | the end of the list. */ | |
4284 | ||
4285 | static std::string | |
4286 | make_sort_after_prefix_name (const char *search_name) | |
4287 | { | |
4288 | /* When looking to complete "func", we find the upper bound of all | |
4289 | symbols that start with "func" by looking for where we'd insert | |
4290 | the closest string that would follow "func" in lexicographical | |
4291 | order. Usually, that's "func"-with-last-character-incremented, | |
4292 | i.e. "fund". Mind non-ASCII characters, though. Usually those | |
4293 | will be UTF-8 multi-byte sequences, but we can't be certain. | |
4294 | Especially mind the 0xff character, which is a valid character in | |
4295 | non-UTF-8 source character sets (e.g. Latin1 'ÿ'), and we can't | |
4296 | rule out compilers allowing it in identifiers. Note that | |
4297 | conveniently, strcmp/strcasecmp are specified to compare | |
4298 | characters interpreted as unsigned char. So what we do is treat | |
4299 | the whole string as a base 256 number composed of a sequence of | |
4300 | base 256 "digits" and add 1 to it. I.e., adding 1 to 0xff wraps | |
4301 | to 0, and carries 1 to the following more-significant position. | |
4302 | If the very first character in SEARCH_NAME ends up incremented | |
4303 | and carries/overflows, then the upper bound is the end of the | |
4304 | list. The string after the empty string is also the empty | |
4305 | string. | |
4306 | ||
4307 | Some examples of this operation: | |
4308 | ||
4309 | SEARCH_NAME => "+1" RESULT | |
4310 | ||
4311 | "abc" => "abd" | |
4312 | "ab\xff" => "ac" | |
4313 | "\xff" "a" "\xff" => "\xff" "b" | |
4314 | "\xff" => "" | |
4315 | "\xff\xff" => "" | |
4316 | "" => "" | |
4317 | ||
4318 | Then, with these symbols for example: | |
4319 | ||
4320 | func | |
4321 | func1 | |
4322 | fund | |
4323 | ||
4324 | completing "func" looks for symbols between "func" and | |
4325 | "func"-with-last-character-incremented, i.e. "fund" (exclusive), | |
4326 | which finds "func" and "func1", but not "fund". | |
4327 | ||
4328 | And with: | |
4329 | ||
4330 | funcÿ (Latin1 'ÿ' [0xff]) | |
4331 | funcÿ1 | |
4332 | fund | |
4333 | ||
4334 | completing "funcÿ" looks for symbols between "funcÿ" and "fund" | |
4335 | (exclusive), which finds "funcÿ" and "funcÿ1", but not "fund". | |
4336 | ||
4337 | And with: | |
4338 | ||
4339 | ÿÿ (Latin1 'ÿ' [0xff]) | |
4340 | ÿÿ1 | |
4341 | ||
4342 | completing "ÿ" or "ÿÿ" looks for symbols between between "ÿÿ" and | |
4343 | the end of the list. | |
4344 | */ | |
4345 | std::string after = search_name; | |
4346 | while (!after.empty () && (unsigned char) after.back () == 0xff) | |
4347 | after.pop_back (); | |
4348 | if (!after.empty ()) | |
4349 | after.back () = (unsigned char) after.back () + 1; | |
4350 | return after; | |
4351 | } | |
4352 | ||
5c58de74 | 4353 | /* See declaration. */ |
61d96d7e | 4354 | |
5c58de74 PA |
4355 | std::pair<std::vector<name_component>::const_iterator, |
4356 | std::vector<name_component>::const_iterator> | |
44ed8f3e | 4357 | mapped_index_base::find_name_components_bounds |
5c58de74 | 4358 | (const lookup_name_info &lookup_name_without_params) const |
3f563c84 | 4359 | { |
5c58de74 PA |
4360 | auto *name_cmp |
4361 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
3f563c84 PA |
4362 | |
4363 | const char *cplus | |
c62446b1 | 4364 | = lookup_name_without_params.cplus ().lookup_name ().c_str (); |
9291a0cd | 4365 | |
3f563c84 PA |
4366 | /* Comparison function object for lower_bound that matches against a |
4367 | given symbol name. */ | |
4368 | auto lookup_compare_lower = [&] (const name_component &elem, | |
4369 | const char *name) | |
4370 | { | |
5c58de74 | 4371 | const char *elem_qualified = this->symbol_name_at (elem.idx); |
3f563c84 PA |
4372 | const char *elem_name = elem_qualified + elem.name_offset; |
4373 | return name_cmp (elem_name, name) < 0; | |
4374 | }; | |
4375 | ||
4376 | /* Comparison function object for upper_bound that matches against a | |
4377 | given symbol name. */ | |
4378 | auto lookup_compare_upper = [&] (const char *name, | |
4379 | const name_component &elem) | |
4380 | { | |
5c58de74 | 4381 | const char *elem_qualified = this->symbol_name_at (elem.idx); |
3f563c84 PA |
4382 | const char *elem_name = elem_qualified + elem.name_offset; |
4383 | return name_cmp (name, elem_name) < 0; | |
4384 | }; | |
4385 | ||
5c58de74 PA |
4386 | auto begin = this->name_components.begin (); |
4387 | auto end = this->name_components.end (); | |
3f563c84 PA |
4388 | |
4389 | /* Find the lower bound. */ | |
4390 | auto lower = [&] () | |
4391 | { | |
5c58de74 | 4392 | if (lookup_name_without_params.completion_mode () && cplus[0] == '\0') |
3f563c84 PA |
4393 | return begin; |
4394 | else | |
4395 | return std::lower_bound (begin, end, cplus, lookup_compare_lower); | |
4396 | } (); | |
4397 | ||
4398 | /* Find the upper bound. */ | |
4399 | auto upper = [&] () | |
4400 | { | |
5c58de74 | 4401 | if (lookup_name_without_params.completion_mode ()) |
3f563c84 | 4402 | { |
e1ef7d7a PA |
4403 | /* In completion mode, we want UPPER to point past all |
4404 | symbols names that have the same prefix. I.e., with | |
4405 | these symbols, and completing "func": | |
4406 | ||
4407 | function << lower bound | |
4408 | function1 | |
4409 | other_function << upper bound | |
4410 | ||
4411 | We find the upper bound by looking for the insertion | |
4412 | point of "func"-with-last-character-incremented, | |
4413 | i.e. "fund". */ | |
4414 | std::string after = make_sort_after_prefix_name (cplus); | |
4415 | if (after.empty ()) | |
3f563c84 | 4416 | return end; |
e6b2f5ef PA |
4417 | return std::lower_bound (lower, end, after.c_str (), |
4418 | lookup_compare_lower); | |
3f563c84 PA |
4419 | } |
4420 | else | |
4421 | return std::upper_bound (lower, end, cplus, lookup_compare_upper); | |
4422 | } (); | |
4423 | ||
5c58de74 PA |
4424 | return {lower, upper}; |
4425 | } | |
4426 | ||
4427 | /* See declaration. */ | |
4428 | ||
4429 | void | |
44ed8f3e | 4430 | mapped_index_base::build_name_components () |
5c58de74 PA |
4431 | { |
4432 | if (!this->name_components.empty ()) | |
4433 | return; | |
4434 | ||
4435 | this->name_components_casing = case_sensitivity; | |
4436 | auto *name_cmp | |
4437 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
4438 | ||
4439 | /* The code below only knows how to break apart components of C++ | |
4440 | symbol names (and other languages that use '::' as | |
4441 | namespace/module separator). If we add support for wild matching | |
4442 | to some language that uses some other operator (E.g., Ada, Go and | |
4443 | D use '.'), then we'll need to try splitting the symbol name | |
4444 | according to that language too. Note that Ada does support wild | |
4445 | matching, but doesn't currently support .gdb_index. */ | |
44ed8f3e PA |
4446 | auto count = this->symbol_name_count (); |
4447 | for (offset_type idx = 0; idx < count; idx++) | |
5c58de74 | 4448 | { |
44ed8f3e | 4449 | if (this->symbol_name_slot_invalid (idx)) |
5c58de74 PA |
4450 | continue; |
4451 | ||
4452 | const char *name = this->symbol_name_at (idx); | |
4453 | ||
4454 | /* Add each name component to the name component table. */ | |
4455 | unsigned int previous_len = 0; | |
4456 | for (unsigned int current_len = cp_find_first_component (name); | |
4457 | name[current_len] != '\0'; | |
4458 | current_len += cp_find_first_component (name + current_len)) | |
4459 | { | |
4460 | gdb_assert (name[current_len] == ':'); | |
4461 | this->name_components.push_back ({previous_len, idx}); | |
4462 | /* Skip the '::'. */ | |
4463 | current_len += 2; | |
4464 | previous_len = current_len; | |
4465 | } | |
4466 | this->name_components.push_back ({previous_len, idx}); | |
4467 | } | |
4468 | ||
4469 | /* Sort name_components elements by name. */ | |
4470 | auto name_comp_compare = [&] (const name_component &left, | |
4471 | const name_component &right) | |
4472 | { | |
4473 | const char *left_qualified = this->symbol_name_at (left.idx); | |
4474 | const char *right_qualified = this->symbol_name_at (right.idx); | |
4475 | ||
4476 | const char *left_name = left_qualified + left.name_offset; | |
4477 | const char *right_name = right_qualified + right.name_offset; | |
4478 | ||
4479 | return name_cmp (left_name, right_name) < 0; | |
4480 | }; | |
4481 | ||
4482 | std::sort (this->name_components.begin (), | |
4483 | this->name_components.end (), | |
4484 | name_comp_compare); | |
4485 | } | |
4486 | ||
4487 | /* Helper for dw2_expand_symtabs_matching that works with a | |
44ed8f3e PA |
4488 | mapped_index_base instead of the containing objfile. This is split |
4489 | to a separate function in order to be able to unit test the | |
4490 | name_components matching using a mock mapped_index_base. For each | |
5c58de74 | 4491 | symbol name that matches, calls MATCH_CALLBACK, passing it the |
44ed8f3e | 4492 | symbol's index in the mapped_index_base symbol table. */ |
5c58de74 PA |
4493 | |
4494 | static void | |
4495 | dw2_expand_symtabs_matching_symbol | |
44ed8f3e | 4496 | (mapped_index_base &index, |
5c58de74 PA |
4497 | const lookup_name_info &lookup_name_in, |
4498 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
4499 | enum search_domain kind, | |
4500 | gdb::function_view<void (offset_type)> match_callback) | |
4501 | { | |
4502 | lookup_name_info lookup_name_without_params | |
4503 | = lookup_name_in.make_ignore_params (); | |
4504 | gdb_index_symbol_name_matcher lookup_name_matcher | |
4505 | (lookup_name_without_params); | |
4506 | ||
4507 | /* Build the symbol name component sorted vector, if we haven't | |
4508 | yet. */ | |
4509 | index.build_name_components (); | |
4510 | ||
4511 | auto bounds = index.find_name_components_bounds (lookup_name_without_params); | |
4512 | ||
3f563c84 PA |
4513 | /* Now for each symbol name in range, check to see if we have a name |
4514 | match, and if so, call the MATCH_CALLBACK callback. */ | |
4515 | ||
4516 | /* The same symbol may appear more than once in the range though. | |
4517 | E.g., if we're looking for symbols that complete "w", and we have | |
4518 | a symbol named "w1::w2", we'll find the two name components for | |
4519 | that same symbol in the range. To be sure we only call the | |
4520 | callback once per symbol, we first collect the symbol name | |
4521 | indexes that matched in a temporary vector and ignore | |
4522 | duplicates. */ | |
4523 | std::vector<offset_type> matches; | |
5c58de74 | 4524 | matches.reserve (std::distance (bounds.first, bounds.second)); |
3f563c84 | 4525 | |
5c58de74 | 4526 | for (; bounds.first != bounds.second; ++bounds.first) |
3f563c84 | 4527 | { |
5c58de74 | 4528 | const char *qualified = index.symbol_name_at (bounds.first->idx); |
3f563c84 PA |
4529 | |
4530 | if (!lookup_name_matcher.matches (qualified) | |
4531 | || (symbol_matcher != NULL && !symbol_matcher (qualified))) | |
9291a0cd TT |
4532 | continue; |
4533 | ||
5c58de74 | 4534 | matches.push_back (bounds.first->idx); |
3f563c84 PA |
4535 | } |
4536 | ||
4537 | std::sort (matches.begin (), matches.end ()); | |
4538 | ||
4539 | /* Finally call the callback, once per match. */ | |
4540 | ULONGEST prev = -1; | |
4541 | for (offset_type idx : matches) | |
4542 | { | |
4543 | if (prev != idx) | |
4544 | { | |
4545 | match_callback (idx); | |
4546 | prev = idx; | |
4547 | } | |
4548 | } | |
4549 | ||
4550 | /* Above we use a type wider than idx's for 'prev', since 0 and | |
4551 | (offset_type)-1 are both possible values. */ | |
4552 | static_assert (sizeof (prev) > sizeof (offset_type), ""); | |
4553 | } | |
4554 | ||
c62446b1 PA |
4555 | #if GDB_SELF_TEST |
4556 | ||
4557 | namespace selftests { namespace dw2_expand_symtabs_matching { | |
4558 | ||
a3c5fafd PA |
4559 | /* A mock .gdb_index/.debug_names-like name index table, enough to |
4560 | exercise dw2_expand_symtabs_matching_symbol, which works with the | |
4561 | mapped_index_base interface. Builds an index from the symbol list | |
4562 | passed as parameter to the constructor. */ | |
4563 | class mock_mapped_index : public mapped_index_base | |
c62446b1 PA |
4564 | { |
4565 | public: | |
a3c5fafd PA |
4566 | mock_mapped_index (gdb::array_view<const char *> symbols) |
4567 | : m_symbol_table (symbols) | |
c62446b1 PA |
4568 | {} |
4569 | ||
a3c5fafd | 4570 | DISABLE_COPY_AND_ASSIGN (mock_mapped_index); |
c62446b1 | 4571 | |
a3c5fafd | 4572 | /* Return the number of names in the symbol table. */ |
632e107b | 4573 | size_t symbol_name_count () const override |
c62446b1 | 4574 | { |
a3c5fafd | 4575 | return m_symbol_table.size (); |
c62446b1 PA |
4576 | } |
4577 | ||
a3c5fafd | 4578 | /* Get the name of the symbol at IDX in the symbol table. */ |
632e107b | 4579 | const char *symbol_name_at (offset_type idx) const override |
a3c5fafd PA |
4580 | { |
4581 | return m_symbol_table[idx]; | |
4582 | } | |
c62446b1 | 4583 | |
a3c5fafd PA |
4584 | private: |
4585 | gdb::array_view<const char *> m_symbol_table; | |
c62446b1 PA |
4586 | }; |
4587 | ||
4588 | /* Convenience function that converts a NULL pointer to a "<null>" | |
4589 | string, to pass to print routines. */ | |
4590 | ||
4591 | static const char * | |
4592 | string_or_null (const char *str) | |
4593 | { | |
4594 | return str != NULL ? str : "<null>"; | |
4595 | } | |
4596 | ||
4597 | /* Check if a lookup_name_info built from | |
4598 | NAME/MATCH_TYPE/COMPLETION_MODE matches the symbols in the mock | |
4599 | index. EXPECTED_LIST is the list of expected matches, in expected | |
4600 | matching order. If no match expected, then an empty list is | |
4601 | specified. Returns true on success. On failure prints a warning | |
4602 | indicating the file:line that failed, and returns false. */ | |
4603 | ||
4604 | static bool | |
4605 | check_match (const char *file, int line, | |
4606 | mock_mapped_index &mock_index, | |
4607 | const char *name, symbol_name_match_type match_type, | |
4608 | bool completion_mode, | |
4609 | std::initializer_list<const char *> expected_list) | |
4610 | { | |
4611 | lookup_name_info lookup_name (name, match_type, completion_mode); | |
4612 | ||
4613 | bool matched = true; | |
4614 | ||
4615 | auto mismatch = [&] (const char *expected_str, | |
4616 | const char *got) | |
4617 | { | |
4618 | warning (_("%s:%d: match_type=%s, looking-for=\"%s\", " | |
4619 | "expected=\"%s\", got=\"%s\"\n"), | |
4620 | file, line, | |
4621 | (match_type == symbol_name_match_type::FULL | |
4622 | ? "FULL" : "WILD"), | |
4623 | name, string_or_null (expected_str), string_or_null (got)); | |
4624 | matched = false; | |
4625 | }; | |
4626 | ||
4627 | auto expected_it = expected_list.begin (); | |
4628 | auto expected_end = expected_list.end (); | |
4629 | ||
a3c5fafd | 4630 | dw2_expand_symtabs_matching_symbol (mock_index, lookup_name, |
c62446b1 PA |
4631 | NULL, ALL_DOMAIN, |
4632 | [&] (offset_type idx) | |
4633 | { | |
a3c5fafd | 4634 | const char *matched_name = mock_index.symbol_name_at (idx); |
c62446b1 PA |
4635 | const char *expected_str |
4636 | = expected_it == expected_end ? NULL : *expected_it++; | |
4637 | ||
4638 | if (expected_str == NULL || strcmp (expected_str, matched_name) != 0) | |
4639 | mismatch (expected_str, matched_name); | |
4640 | }); | |
4641 | ||
4642 | const char *expected_str | |
4643 | = expected_it == expected_end ? NULL : *expected_it++; | |
4644 | if (expected_str != NULL) | |
4645 | mismatch (expected_str, NULL); | |
4646 | ||
4647 | return matched; | |
4648 | } | |
4649 | ||
4650 | /* The symbols added to the mock mapped_index for testing (in | |
4651 | canonical form). */ | |
4652 | static const char *test_symbols[] = { | |
4653 | "function", | |
4654 | "std::bar", | |
4655 | "std::zfunction", | |
4656 | "std::zfunction2", | |
4657 | "w1::w2", | |
4658 | "ns::foo<char*>", | |
4659 | "ns::foo<int>", | |
4660 | "ns::foo<long>", | |
a20714ff PA |
4661 | "ns2::tmpl<int>::foo2", |
4662 | "(anonymous namespace)::A::B::C", | |
c62446b1 | 4663 | |
e1ef7d7a PA |
4664 | /* These are used to check that the increment-last-char in the |
4665 | matching algorithm for completion doesn't match "t1_fund" when | |
4666 | completing "t1_func". */ | |
4667 | "t1_func", | |
4668 | "t1_func1", | |
4669 | "t1_fund", | |
4670 | "t1_fund1", | |
4671 | ||
4672 | /* A UTF-8 name with multi-byte sequences to make sure that | |
4673 | cp-name-parser understands this as a single identifier ("função" | |
4674 | is "function" in PT). */ | |
4675 | u8"u8função", | |
4676 | ||
4677 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4678 | "yfunc\377", | |
4679 | ||
4680 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4681 | "\377", | |
4682 | "\377\377123", | |
4683 | ||
c62446b1 PA |
4684 | /* A name with all sorts of complications. Starts with "z" to make |
4685 | it easier for the completion tests below. */ | |
4686 | #define Z_SYM_NAME \ | |
4687 | "z::std::tuple<(anonymous namespace)::ui*, std::bar<(anonymous namespace)::ui> >" \ | |
4688 | "::tuple<(anonymous namespace)::ui*, " \ | |
4689 | "std::default_delete<(anonymous namespace)::ui>, void>" | |
4690 | ||
4691 | Z_SYM_NAME | |
4692 | }; | |
4693 | ||
a3c5fafd PA |
4694 | /* Returns true if the mapped_index_base::find_name_component_bounds |
4695 | method finds EXPECTED_SYMS in INDEX when looking for SEARCH_NAME, | |
4696 | in completion mode. */ | |
5c58de74 PA |
4697 | |
4698 | static bool | |
a3c5fafd | 4699 | check_find_bounds_finds (mapped_index_base &index, |
5c58de74 PA |
4700 | const char *search_name, |
4701 | gdb::array_view<const char *> expected_syms) | |
4702 | { | |
4703 | lookup_name_info lookup_name (search_name, | |
4704 | symbol_name_match_type::FULL, true); | |
4705 | ||
4706 | auto bounds = index.find_name_components_bounds (lookup_name); | |
4707 | ||
4708 | size_t distance = std::distance (bounds.first, bounds.second); | |
4709 | if (distance != expected_syms.size ()) | |
4710 | return false; | |
4711 | ||
4712 | for (size_t exp_elem = 0; exp_elem < distance; exp_elem++) | |
4713 | { | |
4714 | auto nc_elem = bounds.first + exp_elem; | |
4715 | const char *qualified = index.symbol_name_at (nc_elem->idx); | |
4716 | if (strcmp (qualified, expected_syms[exp_elem]) != 0) | |
4717 | return false; | |
4718 | } | |
4719 | ||
4720 | return true; | |
4721 | } | |
4722 | ||
4723 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4724 | method. */ | |
4725 | ||
c62446b1 | 4726 | static void |
5c58de74 PA |
4727 | test_mapped_index_find_name_component_bounds () |
4728 | { | |
4729 | mock_mapped_index mock_index (test_symbols); | |
4730 | ||
a3c5fafd | 4731 | mock_index.build_name_components (); |
5c58de74 PA |
4732 | |
4733 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4734 | method in completion mode. */ | |
4735 | { | |
4736 | static const char *expected_syms[] = { | |
4737 | "t1_func", | |
4738 | "t1_func1", | |
5c58de74 PA |
4739 | }; |
4740 | ||
a3c5fafd | 4741 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4742 | "t1_func", expected_syms)); |
4743 | } | |
4744 | ||
4745 | /* Check that the increment-last-char in the name matching algorithm | |
4746 | for completion doesn't get confused with Ansi1 'ÿ' / 0xff. */ | |
4747 | { | |
4748 | static const char *expected_syms1[] = { | |
4749 | "\377", | |
4750 | "\377\377123", | |
4751 | }; | |
a3c5fafd | 4752 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4753 | "\377", expected_syms1)); |
4754 | ||
4755 | static const char *expected_syms2[] = { | |
4756 | "\377\377123", | |
4757 | }; | |
a3c5fafd | 4758 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4759 | "\377\377", expected_syms2)); |
4760 | } | |
4761 | } | |
4762 | ||
4763 | /* Test dw2_expand_symtabs_matching_symbol. */ | |
4764 | ||
4765 | static void | |
4766 | test_dw2_expand_symtabs_matching_symbol () | |
c62446b1 PA |
4767 | { |
4768 | mock_mapped_index mock_index (test_symbols); | |
4769 | ||
4770 | /* We let all tests run until the end even if some fails, for debug | |
4771 | convenience. */ | |
4772 | bool any_mismatch = false; | |
4773 | ||
4774 | /* Create the expected symbols list (an initializer_list). Needed | |
4775 | because lists have commas, and we need to pass them to CHECK, | |
4776 | which is a macro. */ | |
4777 | #define EXPECT(...) { __VA_ARGS__ } | |
4778 | ||
4779 | /* Wrapper for check_match that passes down the current | |
4780 | __FILE__/__LINE__. */ | |
4781 | #define CHECK_MATCH(NAME, MATCH_TYPE, COMPLETION_MODE, EXPECTED_LIST) \ | |
4782 | any_mismatch |= !check_match (__FILE__, __LINE__, \ | |
4783 | mock_index, \ | |
4784 | NAME, MATCH_TYPE, COMPLETION_MODE, \ | |
4785 | EXPECTED_LIST) | |
4786 | ||
4787 | /* Identity checks. */ | |
4788 | for (const char *sym : test_symbols) | |
4789 | { | |
4790 | /* Should be able to match all existing symbols. */ | |
4791 | CHECK_MATCH (sym, symbol_name_match_type::FULL, false, | |
4792 | EXPECT (sym)); | |
4793 | ||
4794 | /* Should be able to match all existing symbols with | |
4795 | parameters. */ | |
4796 | std::string with_params = std::string (sym) + "(int)"; | |
4797 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4798 | EXPECT (sym)); | |
4799 | ||
4800 | /* Should be able to match all existing symbols with | |
4801 | parameters and qualifiers. */ | |
4802 | with_params = std::string (sym) + " ( int ) const"; | |
4803 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4804 | EXPECT (sym)); | |
4805 | ||
4806 | /* This should really find sym, but cp-name-parser.y doesn't | |
4807 | know about lvalue/rvalue qualifiers yet. */ | |
4808 | with_params = std::string (sym) + " ( int ) &&"; | |
4809 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4810 | {}); | |
4811 | } | |
4812 | ||
e1ef7d7a PA |
4813 | /* Check that the name matching algorithm for completion doesn't get |
4814 | confused with Latin1 'ÿ' / 0xff. */ | |
4815 | { | |
4816 | static const char str[] = "\377"; | |
4817 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4818 | EXPECT ("\377", "\377\377123")); | |
4819 | } | |
4820 | ||
4821 | /* Check that the increment-last-char in the matching algorithm for | |
4822 | completion doesn't match "t1_fund" when completing "t1_func". */ | |
4823 | { | |
4824 | static const char str[] = "t1_func"; | |
4825 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4826 | EXPECT ("t1_func", "t1_func1")); | |
4827 | } | |
4828 | ||
c62446b1 PA |
4829 | /* Check that completion mode works at each prefix of the expected |
4830 | symbol name. */ | |
4831 | { | |
4832 | static const char str[] = "function(int)"; | |
4833 | size_t len = strlen (str); | |
4834 | std::string lookup; | |
4835 | ||
4836 | for (size_t i = 1; i < len; i++) | |
4837 | { | |
4838 | lookup.assign (str, i); | |
4839 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4840 | EXPECT ("function")); | |
4841 | } | |
4842 | } | |
4843 | ||
4844 | /* While "w" is a prefix of both components, the match function | |
4845 | should still only be called once. */ | |
4846 | { | |
4847 | CHECK_MATCH ("w", symbol_name_match_type::FULL, true, | |
4848 | EXPECT ("w1::w2")); | |
a20714ff PA |
4849 | CHECK_MATCH ("w", symbol_name_match_type::WILD, true, |
4850 | EXPECT ("w1::w2")); | |
c62446b1 PA |
4851 | } |
4852 | ||
4853 | /* Same, with a "complicated" symbol. */ | |
4854 | { | |
4855 | static const char str[] = Z_SYM_NAME; | |
4856 | size_t len = strlen (str); | |
4857 | std::string lookup; | |
4858 | ||
4859 | for (size_t i = 1; i < len; i++) | |
4860 | { | |
4861 | lookup.assign (str, i); | |
4862 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4863 | EXPECT (Z_SYM_NAME)); | |
4864 | } | |
4865 | } | |
4866 | ||
4867 | /* In FULL mode, an incomplete symbol doesn't match. */ | |
4868 | { | |
4869 | CHECK_MATCH ("std::zfunction(int", symbol_name_match_type::FULL, false, | |
4870 | {}); | |
4871 | } | |
4872 | ||
4873 | /* A complete symbol with parameters matches any overload, since the | |
4874 | index has no overload info. */ | |
4875 | { | |
4876 | CHECK_MATCH ("std::zfunction(int)", symbol_name_match_type::FULL, true, | |
4877 | EXPECT ("std::zfunction", "std::zfunction2")); | |
a20714ff PA |
4878 | CHECK_MATCH ("zfunction(int)", symbol_name_match_type::WILD, true, |
4879 | EXPECT ("std::zfunction", "std::zfunction2")); | |
4880 | CHECK_MATCH ("zfunc", symbol_name_match_type::WILD, true, | |
4881 | EXPECT ("std::zfunction", "std::zfunction2")); | |
c62446b1 PA |
4882 | } |
4883 | ||
4884 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4885 | template argument list. */ | |
4886 | { | |
4887 | static const char expected[] = "ns::foo<int>"; | |
4888 | CHECK_MATCH ("ns :: foo < int > ", symbol_name_match_type::FULL, false, | |
4889 | EXPECT (expected)); | |
a20714ff PA |
4890 | CHECK_MATCH ("foo < int > ", symbol_name_match_type::WILD, false, |
4891 | EXPECT (expected)); | |
c62446b1 PA |
4892 | } |
4893 | ||
4894 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4895 | template argument list that includes a pointer. */ | |
4896 | { | |
4897 | static const char expected[] = "ns::foo<char*>"; | |
4898 | /* Try both completion and non-completion modes. */ | |
4899 | static const bool completion_mode[2] = {false, true}; | |
4900 | for (size_t i = 0; i < 2; i++) | |
4901 | { | |
4902 | CHECK_MATCH ("ns :: foo < char * >", symbol_name_match_type::FULL, | |
4903 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4904 | CHECK_MATCH ("foo < char * >", symbol_name_match_type::WILD, |
4905 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4906 | |
4907 | CHECK_MATCH ("ns :: foo < char * > (int)", symbol_name_match_type::FULL, | |
4908 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4909 | CHECK_MATCH ("foo < char * > (int)", symbol_name_match_type::WILD, |
4910 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4911 | } |
4912 | } | |
4913 | ||
4914 | { | |
4915 | /* Check method qualifiers are ignored. */ | |
4916 | static const char expected[] = "ns::foo<char*>"; | |
4917 | CHECK_MATCH ("ns :: foo < char * > ( int ) const", | |
4918 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
4919 | CHECK_MATCH ("ns :: foo < char * > ( int ) &&", | |
4920 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
a20714ff PA |
4921 | CHECK_MATCH ("foo < char * > ( int ) const", |
4922 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
4923 | CHECK_MATCH ("foo < char * > ( int ) &&", | |
4924 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
c62446b1 PA |
4925 | } |
4926 | ||
4927 | /* Test lookup names that don't match anything. */ | |
4928 | { | |
a20714ff PA |
4929 | CHECK_MATCH ("bar2", symbol_name_match_type::WILD, false, |
4930 | {}); | |
4931 | ||
c62446b1 PA |
4932 | CHECK_MATCH ("doesntexist", symbol_name_match_type::FULL, false, |
4933 | {}); | |
4934 | } | |
4935 | ||
a20714ff PA |
4936 | /* Some wild matching tests, exercising "(anonymous namespace)", |
4937 | which should not be confused with a parameter list. */ | |
4938 | { | |
4939 | static const char *syms[] = { | |
4940 | "A::B::C", | |
4941 | "B::C", | |
4942 | "C", | |
4943 | "A :: B :: C ( int )", | |
4944 | "B :: C ( int )", | |
4945 | "C ( int )", | |
4946 | }; | |
4947 | ||
4948 | for (const char *s : syms) | |
4949 | { | |
4950 | CHECK_MATCH (s, symbol_name_match_type::WILD, false, | |
4951 | EXPECT ("(anonymous namespace)::A::B::C")); | |
4952 | } | |
4953 | } | |
4954 | ||
4955 | { | |
4956 | static const char expected[] = "ns2::tmpl<int>::foo2"; | |
4957 | CHECK_MATCH ("tmp", symbol_name_match_type::WILD, true, | |
4958 | EXPECT (expected)); | |
4959 | CHECK_MATCH ("tmpl<", symbol_name_match_type::WILD, true, | |
4960 | EXPECT (expected)); | |
4961 | } | |
4962 | ||
c62446b1 PA |
4963 | SELF_CHECK (!any_mismatch); |
4964 | ||
4965 | #undef EXPECT | |
4966 | #undef CHECK_MATCH | |
4967 | } | |
4968 | ||
5c58de74 PA |
4969 | static void |
4970 | run_test () | |
4971 | { | |
4972 | test_mapped_index_find_name_component_bounds (); | |
4973 | test_dw2_expand_symtabs_matching_symbol (); | |
4974 | } | |
4975 | ||
c62446b1 PA |
4976 | }} // namespace selftests::dw2_expand_symtabs_matching |
4977 | ||
4978 | #endif /* GDB_SELF_TEST */ | |
4979 | ||
4b514bc8 JK |
4980 | /* If FILE_MATCHER is NULL or if PER_CU has |
4981 | dwarf2_per_cu_quick_data::MARK set (see | |
4982 | dw_expand_symtabs_matching_file_matcher), expand the CU and call | |
4983 | EXPANSION_NOTIFY on it. */ | |
4984 | ||
4985 | static void | |
4986 | dw2_expand_symtabs_matching_one | |
4987 | (struct dwarf2_per_cu_data *per_cu, | |
4988 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
4989 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify) | |
4990 | { | |
4991 | if (file_matcher == NULL || per_cu->v.quick->mark) | |
4992 | { | |
4993 | bool symtab_was_null | |
4994 | = (per_cu->v.quick->compunit_symtab == NULL); | |
4995 | ||
58f0c718 | 4996 | dw2_instantiate_symtab (per_cu, false); |
4b514bc8 JK |
4997 | |
4998 | if (expansion_notify != NULL | |
4999 | && symtab_was_null | |
5000 | && per_cu->v.quick->compunit_symtab != NULL) | |
5001 | expansion_notify (per_cu->v.quick->compunit_symtab); | |
5002 | } | |
5003 | } | |
5004 | ||
3f563c84 PA |
5005 | /* Helper for dw2_expand_matching symtabs. Called on each symbol |
5006 | matched, to expand corresponding CUs that were marked. IDX is the | |
5007 | index of the symbol name that matched. */ | |
5008 | ||
5009 | static void | |
5010 | dw2_expand_marked_cus | |
ed2dc618 | 5011 | (struct dwarf2_per_objfile *dwarf2_per_objfile, offset_type idx, |
3f563c84 PA |
5012 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
5013 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
5014 | search_domain kind) | |
5015 | { | |
3f563c84 PA |
5016 | offset_type *vec, vec_len, vec_idx; |
5017 | bool global_seen = false; | |
ed2dc618 | 5018 | mapped_index &index = *dwarf2_per_objfile->index_table; |
3f563c84 | 5019 | |
61920122 | 5020 | vec = (offset_type *) (index.constant_pool |
f00a2de2 | 5021 | + MAYBE_SWAP (index.symbol_table[idx].vec)); |
61920122 PA |
5022 | vec_len = MAYBE_SWAP (vec[0]); |
5023 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
5024 | { | |
61920122 PA |
5025 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[vec_idx + 1]); |
5026 | /* This value is only valid for index versions >= 7. */ | |
5027 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
5028 | gdb_index_symbol_kind symbol_kind = | |
5029 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
5030 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
5031 | /* Only check the symbol attributes if they're present. | |
5032 | Indices prior to version 7 don't record them, | |
5033 | and indices >= 7 may elide them for certain symbols | |
5034 | (gold does this). */ | |
5035 | int attrs_valid = | |
5036 | (index.version >= 7 | |
5037 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
5038 | ||
5039 | /* Work around gold/15646. */ | |
5040 | if (attrs_valid) | |
9291a0cd | 5041 | { |
61920122 PA |
5042 | if (!is_static && global_seen) |
5043 | continue; | |
5044 | if (!is_static) | |
5045 | global_seen = true; | |
5046 | } | |
3190f0c6 | 5047 | |
61920122 PA |
5048 | /* Only check the symbol's kind if it has one. */ |
5049 | if (attrs_valid) | |
5050 | { | |
5051 | switch (kind) | |
8943b874 | 5052 | { |
61920122 PA |
5053 | case VARIABLES_DOMAIN: |
5054 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
5055 | continue; | |
5056 | break; | |
5057 | case FUNCTIONS_DOMAIN: | |
5058 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
8943b874 | 5059 | continue; |
61920122 PA |
5060 | break; |
5061 | case TYPES_DOMAIN: | |
5062 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
5063 | continue; | |
5064 | break; | |
5065 | default: | |
5066 | break; | |
8943b874 | 5067 | } |
61920122 | 5068 | } |
8943b874 | 5069 | |
61920122 | 5070 | /* Don't crash on bad data. */ |
b76e467d | 5071 | if (cu_index >= (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 5072 | + dwarf2_per_objfile->all_type_units.size ())) |
61920122 | 5073 | { |
b98664d3 | 5074 | complaint (_(".gdb_index entry has bad CU index" |
ed2dc618 SM |
5075 | " [in module %s]"), |
5076 | objfile_name (dwarf2_per_objfile->objfile)); | |
61920122 PA |
5077 | continue; |
5078 | } | |
5079 | ||
ff4c9fec | 5080 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (cu_index); |
4b514bc8 JK |
5081 | dw2_expand_symtabs_matching_one (per_cu, file_matcher, |
5082 | expansion_notify); | |
61920122 PA |
5083 | } |
5084 | } | |
5085 | ||
4b514bc8 JK |
5086 | /* If FILE_MATCHER is non-NULL, set all the |
5087 | dwarf2_per_cu_quick_data::MARK of the current DWARF2_PER_OBJFILE | |
5088 | that match FILE_MATCHER. */ | |
5089 | ||
61920122 | 5090 | static void |
4b514bc8 | 5091 | dw_expand_symtabs_matching_file_matcher |
ed2dc618 SM |
5092 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
5093 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher) | |
61920122 | 5094 | { |
4b514bc8 | 5095 | if (file_matcher == NULL) |
61920122 PA |
5096 | return; |
5097 | ||
4b514bc8 JK |
5098 | objfile *const objfile = dwarf2_per_objfile->objfile; |
5099 | ||
5100 | htab_up visited_found (htab_create_alloc (10, htab_hash_pointer, | |
5101 | htab_eq_pointer, | |
5102 | NULL, xcalloc, xfree)); | |
5103 | htab_up visited_not_found (htab_create_alloc (10, htab_hash_pointer, | |
61920122 PA |
5104 | htab_eq_pointer, |
5105 | NULL, xcalloc, xfree)); | |
61920122 | 5106 | |
4b514bc8 JK |
5107 | /* The rule is CUs specify all the files, including those used by |
5108 | any TU, so there's no need to scan TUs here. */ | |
61920122 | 5109 | |
b76e467d | 5110 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 5111 | { |
927aa2e7 JK |
5112 | QUIT; |
5113 | ||
5114 | per_cu->v.quick->mark = 0; | |
5115 | ||
5116 | /* We only need to look at symtabs not already expanded. */ | |
5117 | if (per_cu->v.quick->compunit_symtab) | |
5118 | continue; | |
5119 | ||
b76e467d | 5120 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
927aa2e7 JK |
5121 | if (file_data == NULL) |
5122 | continue; | |
5123 | ||
5124 | if (htab_find (visited_not_found.get (), file_data) != NULL) | |
5125 | continue; | |
5126 | else if (htab_find (visited_found.get (), file_data) != NULL) | |
5127 | { | |
5128 | per_cu->v.quick->mark = 1; | |
5129 | continue; | |
5130 | } | |
5131 | ||
b76e467d | 5132 | for (int j = 0; j < file_data->num_file_names; ++j) |
927aa2e7 JK |
5133 | { |
5134 | const char *this_real_name; | |
5135 | ||
5136 | if (file_matcher (file_data->file_names[j], false)) | |
5137 | { | |
5138 | per_cu->v.quick->mark = 1; | |
5139 | break; | |
5140 | } | |
5141 | ||
5142 | /* Before we invoke realpath, which can get expensive when many | |
5143 | files are involved, do a quick comparison of the basenames. */ | |
5144 | if (!basenames_may_differ | |
5145 | && !file_matcher (lbasename (file_data->file_names[j]), | |
5146 | true)) | |
5147 | continue; | |
5148 | ||
5149 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
5150 | if (file_matcher (this_real_name, false)) | |
5151 | { | |
5152 | per_cu->v.quick->mark = 1; | |
5153 | break; | |
5154 | } | |
5155 | } | |
5156 | ||
b76e467d SM |
5157 | void **slot = htab_find_slot (per_cu->v.quick->mark |
5158 | ? visited_found.get () | |
5159 | : visited_not_found.get (), | |
5160 | file_data, INSERT); | |
927aa2e7 JK |
5161 | *slot = file_data; |
5162 | } | |
5163 | } | |
5164 | ||
5165 | static void | |
5166 | dw2_expand_symtabs_matching | |
5167 | (struct objfile *objfile, | |
5168 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
5169 | const lookup_name_info &lookup_name, | |
5170 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
5171 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
5172 | enum search_domain kind) | |
5173 | { | |
ed2dc618 SM |
5174 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5175 | = get_dwarf2_per_objfile (objfile); | |
927aa2e7 JK |
5176 | |
5177 | /* index_table is NULL if OBJF_READNOW. */ | |
5178 | if (!dwarf2_per_objfile->index_table) | |
5179 | return; | |
5180 | ||
ed2dc618 | 5181 | dw_expand_symtabs_matching_file_matcher (dwarf2_per_objfile, file_matcher); |
927aa2e7 JK |
5182 | |
5183 | mapped_index &index = *dwarf2_per_objfile->index_table; | |
5184 | ||
5185 | dw2_expand_symtabs_matching_symbol (index, lookup_name, | |
5186 | symbol_matcher, | |
5187 | kind, [&] (offset_type idx) | |
5188 | { | |
ed2dc618 | 5189 | dw2_expand_marked_cus (dwarf2_per_objfile, idx, file_matcher, |
927aa2e7 JK |
5190 | expansion_notify, kind); |
5191 | }); | |
5192 | } | |
5193 | ||
5194 | /* A helper for dw2_find_pc_sect_compunit_symtab which finds the most specific | |
5195 | symtab. */ | |
5196 | ||
5197 | static struct compunit_symtab * | |
5198 | recursively_find_pc_sect_compunit_symtab (struct compunit_symtab *cust, | |
5199 | CORE_ADDR pc) | |
5200 | { | |
5201 | int i; | |
5202 | ||
5203 | if (COMPUNIT_BLOCKVECTOR (cust) != NULL | |
5204 | && blockvector_contains_pc (COMPUNIT_BLOCKVECTOR (cust), pc)) | |
5205 | return cust; | |
5206 | ||
5207 | if (cust->includes == NULL) | |
5208 | return NULL; | |
5209 | ||
5210 | for (i = 0; cust->includes[i]; ++i) | |
5211 | { | |
5212 | struct compunit_symtab *s = cust->includes[i]; | |
5213 | ||
5214 | s = recursively_find_pc_sect_compunit_symtab (s, pc); | |
5215 | if (s != NULL) | |
5216 | return s; | |
5217 | } | |
5218 | ||
5219 | return NULL; | |
5220 | } | |
5221 | ||
5222 | static struct compunit_symtab * | |
5223 | dw2_find_pc_sect_compunit_symtab (struct objfile *objfile, | |
5224 | struct bound_minimal_symbol msymbol, | |
5225 | CORE_ADDR pc, | |
5226 | struct obj_section *section, | |
5227 | int warn_if_readin) | |
5228 | { | |
5229 | struct dwarf2_per_cu_data *data; | |
5230 | struct compunit_symtab *result; | |
5231 | ||
927aa2e7 JK |
5232 | if (!objfile->psymtabs_addrmap) |
5233 | return NULL; | |
5234 | ||
5235 | data = (struct dwarf2_per_cu_data *) addrmap_find (objfile->psymtabs_addrmap, | |
5236 | pc); | |
5237 | if (!data) | |
5238 | return NULL; | |
5239 | ||
5240 | if (warn_if_readin && data->v.quick->compunit_symtab) | |
5241 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), | |
5242 | paddress (get_objfile_arch (objfile), pc)); | |
5243 | ||
5244 | result | |
58f0c718 TT |
5245 | = recursively_find_pc_sect_compunit_symtab (dw2_instantiate_symtab (data, |
5246 | false), | |
927aa2e7 JK |
5247 | pc); |
5248 | gdb_assert (result != NULL); | |
5249 | return result; | |
5250 | } | |
5251 | ||
5252 | static void | |
5253 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, | |
5254 | void *data, int need_fullname) | |
5255 | { | |
ed2dc618 SM |
5256 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5257 | = get_dwarf2_per_objfile (objfile); | |
927aa2e7 JK |
5258 | |
5259 | if (!dwarf2_per_objfile->filenames_cache) | |
5260 | { | |
5261 | dwarf2_per_objfile->filenames_cache.emplace (); | |
5262 | ||
5263 | htab_up visited (htab_create_alloc (10, | |
5264 | htab_hash_pointer, htab_eq_pointer, | |
5265 | NULL, xcalloc, xfree)); | |
5266 | ||
5267 | /* The rule is CUs specify all the files, including those used | |
5268 | by any TU, so there's no need to scan TUs here. We can | |
5269 | ignore file names coming from already-expanded CUs. */ | |
5270 | ||
b76e467d | 5271 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 5272 | { |
927aa2e7 JK |
5273 | if (per_cu->v.quick->compunit_symtab) |
5274 | { | |
5275 | void **slot = htab_find_slot (visited.get (), | |
5276 | per_cu->v.quick->file_names, | |
5277 | INSERT); | |
5278 | ||
5279 | *slot = per_cu->v.quick->file_names; | |
5280 | } | |
5281 | } | |
5282 | ||
b76e467d | 5283 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 5284 | { |
927aa2e7 JK |
5285 | /* We only need to look at symtabs not already expanded. */ |
5286 | if (per_cu->v.quick->compunit_symtab) | |
5287 | continue; | |
5288 | ||
b76e467d | 5289 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
927aa2e7 JK |
5290 | if (file_data == NULL) |
5291 | continue; | |
5292 | ||
b76e467d | 5293 | void **slot = htab_find_slot (visited.get (), file_data, INSERT); |
927aa2e7 JK |
5294 | if (*slot) |
5295 | { | |
5296 | /* Already visited. */ | |
5297 | continue; | |
5298 | } | |
5299 | *slot = file_data; | |
5300 | ||
5301 | for (int j = 0; j < file_data->num_file_names; ++j) | |
5302 | { | |
5303 | const char *filename = file_data->file_names[j]; | |
5304 | dwarf2_per_objfile->filenames_cache->seen (filename); | |
5305 | } | |
5306 | } | |
5307 | } | |
5308 | ||
5309 | dwarf2_per_objfile->filenames_cache->traverse ([&] (const char *filename) | |
5310 | { | |
5311 | gdb::unique_xmalloc_ptr<char> this_real_name; | |
5312 | ||
5313 | if (need_fullname) | |
5314 | this_real_name = gdb_realpath (filename); | |
5315 | (*fun) (filename, this_real_name.get (), data); | |
5316 | }); | |
5317 | } | |
5318 | ||
5319 | static int | |
5320 | dw2_has_symbols (struct objfile *objfile) | |
5321 | { | |
5322 | return 1; | |
5323 | } | |
5324 | ||
5325 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
5326 | { | |
5327 | dw2_has_symbols, | |
5328 | dw2_find_last_source_symtab, | |
5329 | dw2_forget_cached_source_info, | |
5330 | dw2_map_symtabs_matching_filename, | |
5331 | dw2_lookup_symbol, | |
5332 | dw2_print_stats, | |
5333 | dw2_dump, | |
5334 | dw2_relocate, | |
5335 | dw2_expand_symtabs_for_function, | |
5336 | dw2_expand_all_symtabs, | |
5337 | dw2_expand_symtabs_with_fullname, | |
5338 | dw2_map_matching_symbols, | |
5339 | dw2_expand_symtabs_matching, | |
5340 | dw2_find_pc_sect_compunit_symtab, | |
5341 | NULL, | |
5342 | dw2_map_symbol_filenames | |
5343 | }; | |
5344 | ||
5345 | /* DWARF-5 debug_names reader. */ | |
5346 | ||
5347 | /* DWARF-5 augmentation string for GDB's DW_IDX_GNU_* extension. */ | |
5348 | static const gdb_byte dwarf5_augmentation[] = { 'G', 'D', 'B', 0 }; | |
5349 | ||
5350 | /* A helper function that reads the .debug_names section in SECTION | |
5351 | and fills in MAP. FILENAME is the name of the file containing the | |
5352 | section; it is used for error reporting. | |
5353 | ||
5354 | Returns true if all went well, false otherwise. */ | |
5355 | ||
5356 | static bool | |
5357 | read_debug_names_from_section (struct objfile *objfile, | |
5358 | const char *filename, | |
5359 | struct dwarf2_section_info *section, | |
5360 | mapped_debug_names &map) | |
5361 | { | |
5362 | if (dwarf2_section_empty_p (section)) | |
5363 | return false; | |
5364 | ||
5365 | /* Older elfutils strip versions could keep the section in the main | |
5366 | executable while splitting it for the separate debug info file. */ | |
5367 | if ((get_section_flags (section) & SEC_HAS_CONTENTS) == 0) | |
5368 | return false; | |
5369 | ||
5370 | dwarf2_read_section (objfile, section); | |
5371 | ||
5372 | map.dwarf5_byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
5373 | ||
5374 | const gdb_byte *addr = section->buffer; | |
5375 | ||
5376 | bfd *const abfd = get_section_bfd_owner (section); | |
5377 | ||
5378 | unsigned int bytes_read; | |
5379 | LONGEST length = read_initial_length (abfd, addr, &bytes_read); | |
5380 | addr += bytes_read; | |
5381 | ||
5382 | map.dwarf5_is_dwarf64 = bytes_read != 4; | |
5383 | map.offset_size = map.dwarf5_is_dwarf64 ? 8 : 4; | |
5384 | if (bytes_read + length != section->size) | |
5385 | { | |
5386 | /* There may be multiple per-CU indices. */ | |
5387 | warning (_("Section .debug_names in %s length %s does not match " | |
5388 | "section length %s, ignoring .debug_names."), | |
5389 | filename, plongest (bytes_read + length), | |
5390 | pulongest (section->size)); | |
5391 | return false; | |
5392 | } | |
5393 | ||
5394 | /* The version number. */ | |
5395 | uint16_t version = read_2_bytes (abfd, addr); | |
5396 | addr += 2; | |
5397 | if (version != 5) | |
5398 | { | |
5399 | warning (_("Section .debug_names in %s has unsupported version %d, " | |
5400 | "ignoring .debug_names."), | |
5401 | filename, version); | |
5402 | return false; | |
5403 | } | |
5404 | ||
5405 | /* Padding. */ | |
5406 | uint16_t padding = read_2_bytes (abfd, addr); | |
5407 | addr += 2; | |
5408 | if (padding != 0) | |
5409 | { | |
5410 | warning (_("Section .debug_names in %s has unsupported padding %d, " | |
5411 | "ignoring .debug_names."), | |
5412 | filename, padding); | |
5413 | return false; | |
5414 | } | |
5415 | ||
5416 | /* comp_unit_count - The number of CUs in the CU list. */ | |
5417 | map.cu_count = read_4_bytes (abfd, addr); | |
5418 | addr += 4; | |
5419 | ||
5420 | /* local_type_unit_count - The number of TUs in the local TU | |
5421 | list. */ | |
5422 | map.tu_count = read_4_bytes (abfd, addr); | |
5423 | addr += 4; | |
5424 | ||
5425 | /* foreign_type_unit_count - The number of TUs in the foreign TU | |
5426 | list. */ | |
5427 | uint32_t foreign_tu_count = read_4_bytes (abfd, addr); | |
5428 | addr += 4; | |
5429 | if (foreign_tu_count != 0) | |
5430 | { | |
5431 | warning (_("Section .debug_names in %s has unsupported %lu foreign TUs, " | |
5432 | "ignoring .debug_names."), | |
5433 | filename, static_cast<unsigned long> (foreign_tu_count)); | |
5434 | return false; | |
5435 | } | |
5436 | ||
5437 | /* bucket_count - The number of hash buckets in the hash lookup | |
5438 | table. */ | |
5439 | map.bucket_count = read_4_bytes (abfd, addr); | |
5440 | addr += 4; | |
5441 | ||
5442 | /* name_count - The number of unique names in the index. */ | |
5443 | map.name_count = read_4_bytes (abfd, addr); | |
5444 | addr += 4; | |
5445 | ||
5446 | /* abbrev_table_size - The size in bytes of the abbreviations | |
5447 | table. */ | |
5448 | uint32_t abbrev_table_size = read_4_bytes (abfd, addr); | |
5449 | addr += 4; | |
5450 | ||
5451 | /* augmentation_string_size - The size in bytes of the augmentation | |
5452 | string. This value is rounded up to a multiple of 4. */ | |
5453 | uint32_t augmentation_string_size = read_4_bytes (abfd, addr); | |
5454 | addr += 4; | |
5455 | map.augmentation_is_gdb = ((augmentation_string_size | |
5456 | == sizeof (dwarf5_augmentation)) | |
5457 | && memcmp (addr, dwarf5_augmentation, | |
5458 | sizeof (dwarf5_augmentation)) == 0); | |
5459 | augmentation_string_size += (-augmentation_string_size) & 3; | |
5460 | addr += augmentation_string_size; | |
5461 | ||
5462 | /* List of CUs */ | |
5463 | map.cu_table_reordered = addr; | |
5464 | addr += map.cu_count * map.offset_size; | |
5465 | ||
5466 | /* List of Local TUs */ | |
5467 | map.tu_table_reordered = addr; | |
5468 | addr += map.tu_count * map.offset_size; | |
5469 | ||
5470 | /* Hash Lookup Table */ | |
5471 | map.bucket_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5472 | addr += map.bucket_count * 4; | |
5473 | map.hash_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5474 | addr += map.name_count * 4; | |
5475 | ||
5476 | /* Name Table */ | |
5477 | map.name_table_string_offs_reordered = addr; | |
5478 | addr += map.name_count * map.offset_size; | |
5479 | map.name_table_entry_offs_reordered = addr; | |
5480 | addr += map.name_count * map.offset_size; | |
5481 | ||
5482 | const gdb_byte *abbrev_table_start = addr; | |
5483 | for (;;) | |
5484 | { | |
5485 | unsigned int bytes_read; | |
5486 | const ULONGEST index_num = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5487 | addr += bytes_read; | |
5488 | if (index_num == 0) | |
5489 | break; | |
5490 | ||
5491 | const auto insertpair | |
5492 | = map.abbrev_map.emplace (index_num, mapped_debug_names::index_val ()); | |
5493 | if (!insertpair.second) | |
5494 | { | |
5495 | warning (_("Section .debug_names in %s has duplicate index %s, " | |
5496 | "ignoring .debug_names."), | |
5497 | filename, pulongest (index_num)); | |
5498 | return false; | |
5499 | } | |
5500 | mapped_debug_names::index_val &indexval = insertpair.first->second; | |
5501 | indexval.dwarf_tag = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5502 | addr += bytes_read; | |
5503 | ||
5504 | for (;;) | |
5505 | { | |
5506 | mapped_debug_names::index_val::attr attr; | |
5507 | attr.dw_idx = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5508 | addr += bytes_read; | |
5509 | attr.form = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5510 | addr += bytes_read; | |
5511 | if (attr.form == DW_FORM_implicit_const) | |
5512 | { | |
5513 | attr.implicit_const = read_signed_leb128 (abfd, addr, | |
5514 | &bytes_read); | |
5515 | addr += bytes_read; | |
5516 | } | |
5517 | if (attr.dw_idx == 0 && attr.form == 0) | |
5518 | break; | |
5519 | indexval.attr_vec.push_back (std::move (attr)); | |
5520 | } | |
5521 | } | |
5522 | if (addr != abbrev_table_start + abbrev_table_size) | |
5523 | { | |
5524 | warning (_("Section .debug_names in %s has abbreviation_table " | |
5525 | "of size %zu vs. written as %u, ignoring .debug_names."), | |
5526 | filename, addr - abbrev_table_start, abbrev_table_size); | |
5527 | return false; | |
5528 | } | |
5529 | map.entry_pool = addr; | |
5530 | ||
5531 | return true; | |
5532 | } | |
5533 | ||
5534 | /* A helper for create_cus_from_debug_names that handles the MAP's CU | |
5535 | list. */ | |
5536 | ||
5537 | static void | |
ed2dc618 | 5538 | create_cus_from_debug_names_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
5539 | const mapped_debug_names &map, |
5540 | dwarf2_section_info §ion, | |
b76e467d | 5541 | bool is_dwz) |
927aa2e7 JK |
5542 | { |
5543 | sect_offset sect_off_prev; | |
5544 | for (uint32_t i = 0; i <= map.cu_count; ++i) | |
5545 | { | |
5546 | sect_offset sect_off_next; | |
5547 | if (i < map.cu_count) | |
5548 | { | |
5549 | sect_off_next | |
5550 | = (sect_offset) (extract_unsigned_integer | |
5551 | (map.cu_table_reordered + i * map.offset_size, | |
5552 | map.offset_size, | |
5553 | map.dwarf5_byte_order)); | |
5554 | } | |
5555 | else | |
5556 | sect_off_next = (sect_offset) section.size; | |
5557 | if (i >= 1) | |
5558 | { | |
5559 | const ULONGEST length = sect_off_next - sect_off_prev; | |
b76e467d | 5560 | dwarf2_per_cu_data *per_cu |
ed2dc618 | 5561 | = create_cu_from_index_list (dwarf2_per_objfile, §ion, is_dwz, |
927aa2e7 | 5562 | sect_off_prev, length); |
b76e467d | 5563 | dwarf2_per_objfile->all_comp_units.push_back (per_cu); |
927aa2e7 JK |
5564 | } |
5565 | sect_off_prev = sect_off_next; | |
5566 | } | |
5567 | } | |
5568 | ||
5569 | /* Read the CU list from the mapped index, and use it to create all | |
ed2dc618 | 5570 | the CU objects for this dwarf2_per_objfile. */ |
927aa2e7 JK |
5571 | |
5572 | static void | |
ed2dc618 | 5573 | create_cus_from_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
5574 | const mapped_debug_names &map, |
5575 | const mapped_debug_names &dwz_map) | |
5576 | { | |
b76e467d SM |
5577 | gdb_assert (dwarf2_per_objfile->all_comp_units.empty ()); |
5578 | dwarf2_per_objfile->all_comp_units.reserve (map.cu_count + dwz_map.cu_count); | |
927aa2e7 | 5579 | |
ed2dc618 SM |
5580 | create_cus_from_debug_names_list (dwarf2_per_objfile, map, |
5581 | dwarf2_per_objfile->info, | |
b76e467d | 5582 | false /* is_dwz */); |
927aa2e7 JK |
5583 | |
5584 | if (dwz_map.cu_count == 0) | |
5585 | return; | |
5586 | ||
ed2dc618 SM |
5587 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
5588 | create_cus_from_debug_names_list (dwarf2_per_objfile, dwz_map, dwz->info, | |
b76e467d | 5589 | true /* is_dwz */); |
927aa2e7 JK |
5590 | } |
5591 | ||
5592 | /* Read .debug_names. If everything went ok, initialize the "quick" | |
5593 | elements of all the CUs and return true. Otherwise, return false. */ | |
5594 | ||
5595 | static bool | |
ed2dc618 | 5596 | dwarf2_read_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile) |
927aa2e7 | 5597 | { |
22ca247e TT |
5598 | std::unique_ptr<mapped_debug_names> map |
5599 | (new mapped_debug_names (dwarf2_per_objfile)); | |
ed2dc618 SM |
5600 | mapped_debug_names dwz_map (dwarf2_per_objfile); |
5601 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
927aa2e7 JK |
5602 | |
5603 | if (!read_debug_names_from_section (objfile, objfile_name (objfile), | |
5604 | &dwarf2_per_objfile->debug_names, | |
22ca247e | 5605 | *map)) |
927aa2e7 JK |
5606 | return false; |
5607 | ||
5608 | /* Don't use the index if it's empty. */ | |
22ca247e | 5609 | if (map->name_count == 0) |
927aa2e7 JK |
5610 | return false; |
5611 | ||
5612 | /* If there is a .dwz file, read it so we can get its CU list as | |
5613 | well. */ | |
ed2dc618 | 5614 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
927aa2e7 JK |
5615 | if (dwz != NULL) |
5616 | { | |
5617 | if (!read_debug_names_from_section (objfile, | |
5618 | bfd_get_filename (dwz->dwz_bfd), | |
5619 | &dwz->debug_names, dwz_map)) | |
5620 | { | |
5621 | warning (_("could not read '.debug_names' section from %s; skipping"), | |
5622 | bfd_get_filename (dwz->dwz_bfd)); | |
5623 | return false; | |
5624 | } | |
5625 | } | |
5626 | ||
22ca247e | 5627 | create_cus_from_debug_names (dwarf2_per_objfile, *map, dwz_map); |
927aa2e7 | 5628 | |
22ca247e | 5629 | if (map->tu_count != 0) |
927aa2e7 JK |
5630 | { |
5631 | /* We can only handle a single .debug_types when we have an | |
5632 | index. */ | |
5633 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) != 1) | |
5634 | return false; | |
5635 | ||
5636 | dwarf2_section_info *section = VEC_index (dwarf2_section_info_def, | |
5637 | dwarf2_per_objfile->types, 0); | |
5638 | ||
5639 | create_signatured_type_table_from_debug_names | |
22ca247e | 5640 | (dwarf2_per_objfile, *map, section, &dwarf2_per_objfile->abbrev); |
927aa2e7 JK |
5641 | } |
5642 | ||
ed2dc618 SM |
5643 | create_addrmap_from_aranges (dwarf2_per_objfile, |
5644 | &dwarf2_per_objfile->debug_aranges); | |
927aa2e7 | 5645 | |
22ca247e | 5646 | dwarf2_per_objfile->debug_names_table = std::move (map); |
927aa2e7 JK |
5647 | dwarf2_per_objfile->using_index = 1; |
5648 | dwarf2_per_objfile->quick_file_names_table = | |
b76e467d | 5649 | create_quick_file_names_table (dwarf2_per_objfile->all_comp_units.size ()); |
927aa2e7 JK |
5650 | |
5651 | return true; | |
5652 | } | |
5653 | ||
927aa2e7 JK |
5654 | /* Type used to manage iterating over all CUs looking for a symbol for |
5655 | .debug_names. */ | |
5656 | ||
5657 | class dw2_debug_names_iterator | |
5658 | { | |
5659 | public: | |
5660 | /* If WANT_SPECIFIC_BLOCK is true, only look for symbols in block | |
5661 | BLOCK_INDEX. Otherwise BLOCK_INDEX is ignored. */ | |
5662 | dw2_debug_names_iterator (const mapped_debug_names &map, | |
5663 | bool want_specific_block, | |
5664 | block_enum block_index, domain_enum domain, | |
5665 | const char *name) | |
5666 | : m_map (map), m_want_specific_block (want_specific_block), | |
5667 | m_block_index (block_index), m_domain (domain), | |
5668 | m_addr (find_vec_in_debug_names (map, name)) | |
5669 | {} | |
5670 | ||
5671 | dw2_debug_names_iterator (const mapped_debug_names &map, | |
5672 | search_domain search, uint32_t namei) | |
5673 | : m_map (map), | |
5674 | m_search (search), | |
5675 | m_addr (find_vec_in_debug_names (map, namei)) | |
5676 | {} | |
5677 | ||
5678 | /* Return the next matching CU or NULL if there are no more. */ | |
5679 | dwarf2_per_cu_data *next (); | |
5680 | ||
5681 | private: | |
5682 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
5683 | const char *name); | |
5684 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
5685 | uint32_t namei); | |
5686 | ||
5687 | /* The internalized form of .debug_names. */ | |
5688 | const mapped_debug_names &m_map; | |
5689 | ||
5690 | /* If true, only look for symbols that match BLOCK_INDEX. */ | |
5691 | const bool m_want_specific_block = false; | |
5692 | ||
5693 | /* One of GLOBAL_BLOCK or STATIC_BLOCK. | |
5694 | Unused if !WANT_SPECIFIC_BLOCK - FIRST_LOCAL_BLOCK is an invalid | |
5695 | value. */ | |
5696 | const block_enum m_block_index = FIRST_LOCAL_BLOCK; | |
5697 | ||
5698 | /* The kind of symbol we're looking for. */ | |
5699 | const domain_enum m_domain = UNDEF_DOMAIN; | |
5700 | const search_domain m_search = ALL_DOMAIN; | |
5701 | ||
5702 | /* The list of CUs from the index entry of the symbol, or NULL if | |
5703 | not found. */ | |
5704 | const gdb_byte *m_addr; | |
5705 | }; | |
5706 | ||
5707 | const char * | |
5708 | mapped_debug_names::namei_to_name (uint32_t namei) const | |
5709 | { | |
5710 | const ULONGEST namei_string_offs | |
5711 | = extract_unsigned_integer ((name_table_string_offs_reordered | |
5712 | + namei * offset_size), | |
5713 | offset_size, | |
5714 | dwarf5_byte_order); | |
5715 | return read_indirect_string_at_offset | |
ed2dc618 | 5716 | (dwarf2_per_objfile, dwarf2_per_objfile->objfile->obfd, namei_string_offs); |
927aa2e7 JK |
5717 | } |
5718 | ||
5719 | /* Find a slot in .debug_names for the object named NAME. If NAME is | |
5720 | found, return pointer to its pool data. If NAME cannot be found, | |
5721 | return NULL. */ | |
5722 | ||
5723 | const gdb_byte * | |
5724 | dw2_debug_names_iterator::find_vec_in_debug_names | |
5725 | (const mapped_debug_names &map, const char *name) | |
5726 | { | |
5727 | int (*cmp) (const char *, const char *); | |
5728 | ||
5729 | if (current_language->la_language == language_cplus | |
5730 | || current_language->la_language == language_fortran | |
5731 | || current_language->la_language == language_d) | |
5732 | { | |
5733 | /* NAME is already canonical. Drop any qualifiers as | |
5734 | .debug_names does not contain any. */ | |
5735 | ||
5736 | if (strchr (name, '(') != NULL) | |
5737 | { | |
5738 | gdb::unique_xmalloc_ptr<char> without_params | |
5739 | = cp_remove_params (name); | |
5740 | ||
5741 | if (without_params != NULL) | |
5742 | { | |
5743 | name = without_params.get(); | |
5744 | } | |
5745 | } | |
5746 | } | |
5747 | ||
5748 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); | |
5749 | ||
5750 | const uint32_t full_hash = dwarf5_djb_hash (name); | |
5751 | uint32_t namei | |
5752 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5753 | (map.bucket_table_reordered | |
5754 | + (full_hash % map.bucket_count)), 4, | |
5755 | map.dwarf5_byte_order); | |
5756 | if (namei == 0) | |
5757 | return NULL; | |
5758 | --namei; | |
5759 | if (namei >= map.name_count) | |
5760 | { | |
b98664d3 | 5761 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5762 | "[in module %s]"), |
5763 | namei, map.name_count, | |
ed2dc618 | 5764 | objfile_name (map.dwarf2_per_objfile->objfile)); |
927aa2e7 JK |
5765 | return NULL; |
5766 | } | |
5767 | ||
5768 | for (;;) | |
5769 | { | |
5770 | const uint32_t namei_full_hash | |
5771 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5772 | (map.hash_table_reordered + namei), 4, | |
5773 | map.dwarf5_byte_order); | |
5774 | if (full_hash % map.bucket_count != namei_full_hash % map.bucket_count) | |
5775 | return NULL; | |
5776 | ||
5777 | if (full_hash == namei_full_hash) | |
5778 | { | |
5779 | const char *const namei_string = map.namei_to_name (namei); | |
5780 | ||
5781 | #if 0 /* An expensive sanity check. */ | |
5782 | if (namei_full_hash != dwarf5_djb_hash (namei_string)) | |
5783 | { | |
b98664d3 | 5784 | complaint (_("Wrong .debug_names hash for string at index %u " |
927aa2e7 JK |
5785 | "[in module %s]"), |
5786 | namei, objfile_name (dwarf2_per_objfile->objfile)); | |
5787 | return NULL; | |
5788 | } | |
5789 | #endif | |
5790 | ||
5791 | if (cmp (namei_string, name) == 0) | |
5792 | { | |
5793 | const ULONGEST namei_entry_offs | |
5794 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5795 | + namei * map.offset_size), | |
5796 | map.offset_size, map.dwarf5_byte_order); | |
5797 | return map.entry_pool + namei_entry_offs; | |
5798 | } | |
5799 | } | |
5800 | ||
5801 | ++namei; | |
5802 | if (namei >= map.name_count) | |
5803 | return NULL; | |
5804 | } | |
5805 | } | |
5806 | ||
5807 | const gdb_byte * | |
5808 | dw2_debug_names_iterator::find_vec_in_debug_names | |
5809 | (const mapped_debug_names &map, uint32_t namei) | |
5810 | { | |
5811 | if (namei >= map.name_count) | |
5812 | { | |
b98664d3 | 5813 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5814 | "[in module %s]"), |
5815 | namei, map.name_count, | |
ed2dc618 | 5816 | objfile_name (map.dwarf2_per_objfile->objfile)); |
927aa2e7 JK |
5817 | return NULL; |
5818 | } | |
5819 | ||
5820 | const ULONGEST namei_entry_offs | |
5821 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5822 | + namei * map.offset_size), | |
5823 | map.offset_size, map.dwarf5_byte_order); | |
5824 | return map.entry_pool + namei_entry_offs; | |
5825 | } | |
5826 | ||
5827 | /* See dw2_debug_names_iterator. */ | |
5828 | ||
5829 | dwarf2_per_cu_data * | |
5830 | dw2_debug_names_iterator::next () | |
5831 | { | |
5832 | if (m_addr == NULL) | |
5833 | return NULL; | |
5834 | ||
ed2dc618 SM |
5835 | struct dwarf2_per_objfile *dwarf2_per_objfile = m_map.dwarf2_per_objfile; |
5836 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
5837 | bfd *const abfd = objfile->obfd; | |
927aa2e7 JK |
5838 | |
5839 | again: | |
5840 | ||
5841 | unsigned int bytes_read; | |
5842 | const ULONGEST abbrev = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5843 | m_addr += bytes_read; | |
5844 | if (abbrev == 0) | |
5845 | return NULL; | |
5846 | ||
5847 | const auto indexval_it = m_map.abbrev_map.find (abbrev); | |
5848 | if (indexval_it == m_map.abbrev_map.cend ()) | |
5849 | { | |
b98664d3 | 5850 | complaint (_("Wrong .debug_names undefined abbrev code %s " |
927aa2e7 | 5851 | "[in module %s]"), |
ed2dc618 | 5852 | pulongest (abbrev), objfile_name (objfile)); |
927aa2e7 JK |
5853 | return NULL; |
5854 | } | |
5855 | const mapped_debug_names::index_val &indexval = indexval_it->second; | |
5856 | bool have_is_static = false; | |
5857 | bool is_static; | |
5858 | dwarf2_per_cu_data *per_cu = NULL; | |
5859 | for (const mapped_debug_names::index_val::attr &attr : indexval.attr_vec) | |
5860 | { | |
5861 | ULONGEST ull; | |
5862 | switch (attr.form) | |
5863 | { | |
5864 | case DW_FORM_implicit_const: | |
5865 | ull = attr.implicit_const; | |
5866 | break; | |
5867 | case DW_FORM_flag_present: | |
5868 | ull = 1; | |
5869 | break; | |
5870 | case DW_FORM_udata: | |
5871 | ull = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5872 | m_addr += bytes_read; | |
5873 | break; | |
5874 | default: | |
b98664d3 | 5875 | complaint (_("Unsupported .debug_names form %s [in module %s]"), |
927aa2e7 | 5876 | dwarf_form_name (attr.form), |
ed2dc618 | 5877 | objfile_name (objfile)); |
927aa2e7 JK |
5878 | return NULL; |
5879 | } | |
5880 | switch (attr.dw_idx) | |
5881 | { | |
5882 | case DW_IDX_compile_unit: | |
5883 | /* Don't crash on bad data. */ | |
b76e467d | 5884 | if (ull >= dwarf2_per_objfile->all_comp_units.size ()) |
927aa2e7 | 5885 | { |
b98664d3 | 5886 | complaint (_(".debug_names entry has bad CU index %s" |
927aa2e7 JK |
5887 | " [in module %s]"), |
5888 | pulongest (ull), | |
5889 | objfile_name (dwarf2_per_objfile->objfile)); | |
5890 | continue; | |
5891 | } | |
ff4c9fec | 5892 | per_cu = dwarf2_per_objfile->get_cutu (ull); |
927aa2e7 | 5893 | break; |
8af5c486 JK |
5894 | case DW_IDX_type_unit: |
5895 | /* Don't crash on bad data. */ | |
b2bdb8cf | 5896 | if (ull >= dwarf2_per_objfile->all_type_units.size ()) |
8af5c486 | 5897 | { |
b98664d3 | 5898 | complaint (_(".debug_names entry has bad TU index %s" |
8af5c486 JK |
5899 | " [in module %s]"), |
5900 | pulongest (ull), | |
5901 | objfile_name (dwarf2_per_objfile->objfile)); | |
5902 | continue; | |
5903 | } | |
ff4c9fec | 5904 | per_cu = &dwarf2_per_objfile->get_tu (ull)->per_cu; |
8af5c486 | 5905 | break; |
927aa2e7 JK |
5906 | case DW_IDX_GNU_internal: |
5907 | if (!m_map.augmentation_is_gdb) | |
5908 | break; | |
5909 | have_is_static = true; | |
5910 | is_static = true; | |
5911 | break; | |
5912 | case DW_IDX_GNU_external: | |
5913 | if (!m_map.augmentation_is_gdb) | |
5914 | break; | |
5915 | have_is_static = true; | |
5916 | is_static = false; | |
5917 | break; | |
5918 | } | |
5919 | } | |
5920 | ||
5921 | /* Skip if already read in. */ | |
5922 | if (per_cu->v.quick->compunit_symtab) | |
5923 | goto again; | |
5924 | ||
5925 | /* Check static vs global. */ | |
5926 | if (have_is_static) | |
5927 | { | |
5928 | const bool want_static = m_block_index != GLOBAL_BLOCK; | |
5929 | if (m_want_specific_block && want_static != is_static) | |
5930 | goto again; | |
5931 | } | |
5932 | ||
5933 | /* Match dw2_symtab_iter_next, symbol_kind | |
5934 | and debug_names::psymbol_tag. */ | |
5935 | switch (m_domain) | |
5936 | { | |
5937 | case VAR_DOMAIN: | |
5938 | switch (indexval.dwarf_tag) | |
5939 | { | |
5940 | case DW_TAG_variable: | |
5941 | case DW_TAG_subprogram: | |
5942 | /* Some types are also in VAR_DOMAIN. */ | |
5943 | case DW_TAG_typedef: | |
5944 | case DW_TAG_structure_type: | |
5945 | break; | |
5946 | default: | |
5947 | goto again; | |
5948 | } | |
5949 | break; | |
5950 | case STRUCT_DOMAIN: | |
5951 | switch (indexval.dwarf_tag) | |
5952 | { | |
5953 | case DW_TAG_typedef: | |
5954 | case DW_TAG_structure_type: | |
5955 | break; | |
5956 | default: | |
5957 | goto again; | |
5958 | } | |
5959 | break; | |
5960 | case LABEL_DOMAIN: | |
5961 | switch (indexval.dwarf_tag) | |
5962 | { | |
5963 | case 0: | |
5964 | case DW_TAG_variable: | |
5965 | break; | |
5966 | default: | |
5967 | goto again; | |
5968 | } | |
5969 | break; | |
5970 | default: | |
5971 | break; | |
5972 | } | |
5973 | ||
5974 | /* Match dw2_expand_symtabs_matching, symbol_kind and | |
5975 | debug_names::psymbol_tag. */ | |
5976 | switch (m_search) | |
4b514bc8 | 5977 | { |
927aa2e7 JK |
5978 | case VARIABLES_DOMAIN: |
5979 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5980 | { |
927aa2e7 JK |
5981 | case DW_TAG_variable: |
5982 | break; | |
5983 | default: | |
5984 | goto again; | |
4b514bc8 | 5985 | } |
927aa2e7 JK |
5986 | break; |
5987 | case FUNCTIONS_DOMAIN: | |
5988 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5989 | { |
927aa2e7 JK |
5990 | case DW_TAG_subprogram: |
5991 | break; | |
5992 | default: | |
5993 | goto again; | |
4b514bc8 | 5994 | } |
927aa2e7 JK |
5995 | break; |
5996 | case TYPES_DOMAIN: | |
5997 | switch (indexval.dwarf_tag) | |
5998 | { | |
5999 | case DW_TAG_typedef: | |
6000 | case DW_TAG_structure_type: | |
6001 | break; | |
6002 | default: | |
6003 | goto again; | |
6004 | } | |
6005 | break; | |
6006 | default: | |
6007 | break; | |
4b514bc8 | 6008 | } |
927aa2e7 JK |
6009 | |
6010 | return per_cu; | |
4b514bc8 | 6011 | } |
61920122 | 6012 | |
927aa2e7 JK |
6013 | static struct compunit_symtab * |
6014 | dw2_debug_names_lookup_symbol (struct objfile *objfile, int block_index_int, | |
6015 | const char *name, domain_enum domain) | |
4b514bc8 | 6016 | { |
927aa2e7 | 6017 | const block_enum block_index = static_cast<block_enum> (block_index_int); |
ed2dc618 SM |
6018 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6019 | = get_dwarf2_per_objfile (objfile); | |
61920122 | 6020 | |
927aa2e7 JK |
6021 | const auto &mapp = dwarf2_per_objfile->debug_names_table; |
6022 | if (!mapp) | |
61920122 | 6023 | { |
927aa2e7 JK |
6024 | /* index is NULL if OBJF_READNOW. */ |
6025 | return NULL; | |
6026 | } | |
6027 | const auto &map = *mapp; | |
9291a0cd | 6028 | |
927aa2e7 JK |
6029 | dw2_debug_names_iterator iter (map, true /* want_specific_block */, |
6030 | block_index, domain, name); | |
9703b513 | 6031 | |
927aa2e7 JK |
6032 | struct compunit_symtab *stab_best = NULL; |
6033 | struct dwarf2_per_cu_data *per_cu; | |
6034 | while ((per_cu = iter.next ()) != NULL) | |
6035 | { | |
6036 | struct symbol *sym, *with_opaque = NULL; | |
58f0c718 | 6037 | struct compunit_symtab *stab = dw2_instantiate_symtab (per_cu, false); |
927aa2e7 JK |
6038 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
6039 | struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); | |
9703b513 | 6040 | |
927aa2e7 JK |
6041 | sym = block_find_symbol (block, name, domain, |
6042 | block_find_non_opaque_type_preferred, | |
6043 | &with_opaque); | |
9703b513 | 6044 | |
927aa2e7 JK |
6045 | /* Some caution must be observed with overloaded functions and |
6046 | methods, since the index will not contain any overload | |
6047 | information (but NAME might contain it). */ | |
a3ec0bb1 | 6048 | |
927aa2e7 JK |
6049 | if (sym != NULL |
6050 | && strcmp_iw (SYMBOL_SEARCH_NAME (sym), name) == 0) | |
6051 | return stab; | |
6052 | if (with_opaque != NULL | |
6053 | && strcmp_iw (SYMBOL_SEARCH_NAME (with_opaque), name) == 0) | |
6054 | stab_best = stab; | |
9703b513 | 6055 | |
927aa2e7 | 6056 | /* Keep looking through other CUs. */ |
9703b513 TT |
6057 | } |
6058 | ||
927aa2e7 | 6059 | return stab_best; |
9703b513 TT |
6060 | } |
6061 | ||
927aa2e7 JK |
6062 | /* This dumps minimal information about .debug_names. It is called |
6063 | via "mt print objfiles". The gdb.dwarf2/gdb-index.exp testcase | |
6064 | uses this to verify that .debug_names has been loaded. */ | |
9291a0cd | 6065 | |
927aa2e7 JK |
6066 | static void |
6067 | dw2_debug_names_dump (struct objfile *objfile) | |
6068 | { | |
ed2dc618 SM |
6069 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6070 | = get_dwarf2_per_objfile (objfile); | |
6071 | ||
927aa2e7 JK |
6072 | gdb_assert (dwarf2_per_objfile->using_index); |
6073 | printf_filtered (".debug_names:"); | |
6074 | if (dwarf2_per_objfile->debug_names_table) | |
6075 | printf_filtered (" exists\n"); | |
6076 | else | |
6077 | printf_filtered (" faked for \"readnow\"\n"); | |
6078 | printf_filtered ("\n"); | |
9291a0cd TT |
6079 | } |
6080 | ||
9291a0cd | 6081 | static void |
927aa2e7 JK |
6082 | dw2_debug_names_expand_symtabs_for_function (struct objfile *objfile, |
6083 | const char *func_name) | |
9291a0cd | 6084 | { |
ed2dc618 SM |
6085 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6086 | = get_dwarf2_per_objfile (objfile); | |
ae2de4f8 | 6087 | |
927aa2e7 JK |
6088 | /* dwarf2_per_objfile->debug_names_table is NULL if OBJF_READNOW. */ |
6089 | if (dwarf2_per_objfile->debug_names_table) | |
24c79950 | 6090 | { |
927aa2e7 | 6091 | const mapped_debug_names &map = *dwarf2_per_objfile->debug_names_table; |
24c79950 | 6092 | |
927aa2e7 JK |
6093 | /* Note: It doesn't matter what we pass for block_index here. */ |
6094 | dw2_debug_names_iterator iter (map, false /* want_specific_block */, | |
6095 | GLOBAL_BLOCK, VAR_DOMAIN, func_name); | |
24c79950 | 6096 | |
927aa2e7 JK |
6097 | struct dwarf2_per_cu_data *per_cu; |
6098 | while ((per_cu = iter.next ()) != NULL) | |
58f0c718 | 6099 | dw2_instantiate_symtab (per_cu, false); |
927aa2e7 JK |
6100 | } |
6101 | } | |
24c79950 | 6102 | |
927aa2e7 JK |
6103 | static void |
6104 | dw2_debug_names_expand_symtabs_matching | |
6105 | (struct objfile *objfile, | |
6106 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
6107 | const lookup_name_info &lookup_name, | |
6108 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
6109 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
6110 | enum search_domain kind) | |
6111 | { | |
ed2dc618 SM |
6112 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6113 | = get_dwarf2_per_objfile (objfile); | |
9291a0cd | 6114 | |
927aa2e7 JK |
6115 | /* debug_names_table is NULL if OBJF_READNOW. */ |
6116 | if (!dwarf2_per_objfile->debug_names_table) | |
6117 | return; | |
9291a0cd | 6118 | |
ed2dc618 | 6119 | dw_expand_symtabs_matching_file_matcher (dwarf2_per_objfile, file_matcher); |
24c79950 | 6120 | |
44ed8f3e | 6121 | mapped_debug_names &map = *dwarf2_per_objfile->debug_names_table; |
bbf2f4df | 6122 | |
44ed8f3e PA |
6123 | dw2_expand_symtabs_matching_symbol (map, lookup_name, |
6124 | symbol_matcher, | |
6125 | kind, [&] (offset_type namei) | |
927aa2e7 | 6126 | { |
927aa2e7 JK |
6127 | /* The name was matched, now expand corresponding CUs that were |
6128 | marked. */ | |
6129 | dw2_debug_names_iterator iter (map, kind, namei); | |
bbf2f4df | 6130 | |
927aa2e7 JK |
6131 | struct dwarf2_per_cu_data *per_cu; |
6132 | while ((per_cu = iter.next ()) != NULL) | |
6133 | dw2_expand_symtabs_matching_one (per_cu, file_matcher, | |
6134 | expansion_notify); | |
44ed8f3e | 6135 | }); |
9291a0cd TT |
6136 | } |
6137 | ||
927aa2e7 | 6138 | const struct quick_symbol_functions dwarf2_debug_names_functions = |
9291a0cd TT |
6139 | { |
6140 | dw2_has_symbols, | |
6141 | dw2_find_last_source_symtab, | |
6142 | dw2_forget_cached_source_info, | |
f8eba3c6 | 6143 | dw2_map_symtabs_matching_filename, |
927aa2e7 | 6144 | dw2_debug_names_lookup_symbol, |
9291a0cd | 6145 | dw2_print_stats, |
927aa2e7 | 6146 | dw2_debug_names_dump, |
9291a0cd | 6147 | dw2_relocate, |
927aa2e7 | 6148 | dw2_debug_names_expand_symtabs_for_function, |
9291a0cd | 6149 | dw2_expand_all_symtabs, |
652a8996 | 6150 | dw2_expand_symtabs_with_fullname, |
40658b94 | 6151 | dw2_map_matching_symbols, |
927aa2e7 | 6152 | dw2_debug_names_expand_symtabs_matching, |
43f3e411 | 6153 | dw2_find_pc_sect_compunit_symtab, |
71a3c369 | 6154 | NULL, |
9291a0cd TT |
6155 | dw2_map_symbol_filenames |
6156 | }; | |
6157 | ||
3c0aa29a | 6158 | /* See symfile.h. */ |
9291a0cd | 6159 | |
3c0aa29a PA |
6160 | bool |
6161 | dwarf2_initialize_objfile (struct objfile *objfile, dw_index_kind *index_kind) | |
9291a0cd | 6162 | { |
ed2dc618 SM |
6163 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6164 | = get_dwarf2_per_objfile (objfile); | |
6165 | ||
9291a0cd TT |
6166 | /* If we're about to read full symbols, don't bother with the |
6167 | indices. In this case we also don't care if some other debug | |
6168 | format is making psymtabs, because they are all about to be | |
6169 | expanded anyway. */ | |
6170 | if ((objfile->flags & OBJF_READNOW)) | |
6171 | { | |
9291a0cd | 6172 | dwarf2_per_objfile->using_index = 1; |
ed2dc618 SM |
6173 | create_all_comp_units (dwarf2_per_objfile); |
6174 | create_all_type_units (dwarf2_per_objfile); | |
b76e467d SM |
6175 | dwarf2_per_objfile->quick_file_names_table |
6176 | = create_quick_file_names_table | |
6177 | (dwarf2_per_objfile->all_comp_units.size ()); | |
9291a0cd | 6178 | |
b76e467d | 6179 | for (int i = 0; i < (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 6180 | + dwarf2_per_objfile->all_type_units.size ()); ++i) |
9291a0cd | 6181 | { |
ff4c9fec | 6182 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (i); |
9291a0cd | 6183 | |
e254ef6a DE |
6184 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
6185 | struct dwarf2_per_cu_quick_data); | |
9291a0cd TT |
6186 | } |
6187 | ||
6188 | /* Return 1 so that gdb sees the "quick" functions. However, | |
6189 | these functions will be no-ops because we will have expanded | |
6190 | all symtabs. */ | |
3c0aa29a PA |
6191 | *index_kind = dw_index_kind::GDB_INDEX; |
6192 | return true; | |
9291a0cd TT |
6193 | } |
6194 | ||
ed2dc618 | 6195 | if (dwarf2_read_debug_names (dwarf2_per_objfile)) |
3c0aa29a PA |
6196 | { |
6197 | *index_kind = dw_index_kind::DEBUG_NAMES; | |
6198 | return true; | |
6199 | } | |
927aa2e7 | 6200 | |
7b23e087 | 6201 | if (dwarf2_read_gdb_index (dwarf2_per_objfile)) |
3c0aa29a PA |
6202 | { |
6203 | *index_kind = dw_index_kind::GDB_INDEX; | |
6204 | return true; | |
6205 | } | |
9291a0cd | 6206 | |
3c0aa29a | 6207 | return false; |
9291a0cd TT |
6208 | } |
6209 | ||
6210 | \f | |
6211 | ||
dce234bc PP |
6212 | /* Build a partial symbol table. */ |
6213 | ||
6214 | void | |
f29dff0a | 6215 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 6216 | { |
ed2dc618 SM |
6217 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6218 | = get_dwarf2_per_objfile (objfile); | |
c9bf0622 | 6219 | |
af5bf4ad SM |
6220 | if (objfile->global_psymbols.capacity () == 0 |
6221 | && objfile->static_psymbols.capacity () == 0) | |
6222 | init_psymbol_list (objfile, 1024); | |
c906108c | 6223 | |
492d29ea | 6224 | TRY |
c9bf0622 TT |
6225 | { |
6226 | /* This isn't really ideal: all the data we allocate on the | |
6227 | objfile's obstack is still uselessly kept around. However, | |
6228 | freeing it seems unsafe. */ | |
906768f9 | 6229 | psymtab_discarder psymtabs (objfile); |
ed2dc618 | 6230 | dwarf2_build_psymtabs_hard (dwarf2_per_objfile); |
906768f9 | 6231 | psymtabs.keep (); |
c9bf0622 | 6232 | } |
492d29ea PA |
6233 | CATCH (except, RETURN_MASK_ERROR) |
6234 | { | |
6235 | exception_print (gdb_stderr, except); | |
6236 | } | |
6237 | END_CATCH | |
c906108c | 6238 | } |
c906108c | 6239 | |
1ce1cefd DE |
6240 | /* Return the total length of the CU described by HEADER. */ |
6241 | ||
6242 | static unsigned int | |
6243 | get_cu_length (const struct comp_unit_head *header) | |
6244 | { | |
6245 | return header->initial_length_size + header->length; | |
6246 | } | |
6247 | ||
9c541725 | 6248 | /* Return TRUE if SECT_OFF is within CU_HEADER. */ |
45452591 | 6249 | |
9c541725 PA |
6250 | static inline bool |
6251 | offset_in_cu_p (const comp_unit_head *cu_header, sect_offset sect_off) | |
45452591 | 6252 | { |
9c541725 PA |
6253 | sect_offset bottom = cu_header->sect_off; |
6254 | sect_offset top = cu_header->sect_off + get_cu_length (cu_header); | |
9a619af0 | 6255 | |
9c541725 | 6256 | return sect_off >= bottom && sect_off < top; |
45452591 DE |
6257 | } |
6258 | ||
3b80fe9b DE |
6259 | /* Find the base address of the compilation unit for range lists and |
6260 | location lists. It will normally be specified by DW_AT_low_pc. | |
6261 | In DWARF-3 draft 4, the base address could be overridden by | |
6262 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
6263 | compilation units with discontinuous ranges. */ | |
6264 | ||
6265 | static void | |
6266 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
6267 | { | |
6268 | struct attribute *attr; | |
6269 | ||
6270 | cu->base_known = 0; | |
6271 | cu->base_address = 0; | |
6272 | ||
6273 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
6274 | if (attr) | |
6275 | { | |
31aa7e4e | 6276 | cu->base_address = attr_value_as_address (attr); |
3b80fe9b DE |
6277 | cu->base_known = 1; |
6278 | } | |
6279 | else | |
6280 | { | |
6281 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
6282 | if (attr) | |
6283 | { | |
31aa7e4e | 6284 | cu->base_address = attr_value_as_address (attr); |
3b80fe9b DE |
6285 | cu->base_known = 1; |
6286 | } | |
6287 | } | |
6288 | } | |
6289 | ||
93311388 | 6290 | /* Read in the comp unit header information from the debug_info at info_ptr. |
43988095 | 6291 | Use rcuh_kind::COMPILE as the default type if not known by the caller. |
93311388 DE |
6292 | NOTE: This leaves members offset, first_die_offset to be filled in |
6293 | by the caller. */ | |
107d2387 | 6294 | |
d521ce57 | 6295 | static const gdb_byte * |
107d2387 | 6296 | read_comp_unit_head (struct comp_unit_head *cu_header, |
43988095 JK |
6297 | const gdb_byte *info_ptr, |
6298 | struct dwarf2_section_info *section, | |
6299 | rcuh_kind section_kind) | |
107d2387 AC |
6300 | { |
6301 | int signed_addr; | |
891d2f0b | 6302 | unsigned int bytes_read; |
43988095 JK |
6303 | const char *filename = get_section_file_name (section); |
6304 | bfd *abfd = get_section_bfd_owner (section); | |
c764a876 DE |
6305 | |
6306 | cu_header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
6307 | cu_header->initial_length_size = bytes_read; | |
6308 | cu_header->offset_size = (bytes_read == 4) ? 4 : 8; | |
613e1657 | 6309 | info_ptr += bytes_read; |
107d2387 | 6310 | cu_header->version = read_2_bytes (abfd, info_ptr); |
1ea5da02 TV |
6311 | if (cu_header->version < 2 || cu_header->version > 5) |
6312 | error (_("Dwarf Error: wrong version in compilation unit header " | |
6313 | "(is %d, should be 2, 3, 4 or 5) [in module %s]"), | |
6314 | cu_header->version, filename); | |
107d2387 | 6315 | info_ptr += 2; |
43988095 JK |
6316 | if (cu_header->version < 5) |
6317 | switch (section_kind) | |
6318 | { | |
6319 | case rcuh_kind::COMPILE: | |
6320 | cu_header->unit_type = DW_UT_compile; | |
6321 | break; | |
6322 | case rcuh_kind::TYPE: | |
6323 | cu_header->unit_type = DW_UT_type; | |
6324 | break; | |
6325 | default: | |
6326 | internal_error (__FILE__, __LINE__, | |
6327 | _("read_comp_unit_head: invalid section_kind")); | |
6328 | } | |
6329 | else | |
6330 | { | |
6331 | cu_header->unit_type = static_cast<enum dwarf_unit_type> | |
6332 | (read_1_byte (abfd, info_ptr)); | |
6333 | info_ptr += 1; | |
6334 | switch (cu_header->unit_type) | |
6335 | { | |
6336 | case DW_UT_compile: | |
6337 | if (section_kind != rcuh_kind::COMPILE) | |
6338 | error (_("Dwarf Error: wrong unit_type in compilation unit header " | |
6339 | "(is DW_UT_compile, should be DW_UT_type) [in module %s]"), | |
6340 | filename); | |
6341 | break; | |
6342 | case DW_UT_type: | |
6343 | section_kind = rcuh_kind::TYPE; | |
6344 | break; | |
6345 | default: | |
6346 | error (_("Dwarf Error: wrong unit_type in compilation unit header " | |
6347 | "(is %d, should be %d or %d) [in module %s]"), | |
6348 | cu_header->unit_type, DW_UT_compile, DW_UT_type, filename); | |
6349 | } | |
6350 | ||
6351 | cu_header->addr_size = read_1_byte (abfd, info_ptr); | |
6352 | info_ptr += 1; | |
6353 | } | |
9c541725 PA |
6354 | cu_header->abbrev_sect_off = (sect_offset) read_offset (abfd, info_ptr, |
6355 | cu_header, | |
6356 | &bytes_read); | |
613e1657 | 6357 | info_ptr += bytes_read; |
43988095 JK |
6358 | if (cu_header->version < 5) |
6359 | { | |
6360 | cu_header->addr_size = read_1_byte (abfd, info_ptr); | |
6361 | info_ptr += 1; | |
6362 | } | |
107d2387 AC |
6363 | signed_addr = bfd_get_sign_extend_vma (abfd); |
6364 | if (signed_addr < 0) | |
8e65ff28 | 6365 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 6366 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 | 6367 | cu_header->signed_addr_p = signed_addr; |
c764a876 | 6368 | |
43988095 JK |
6369 | if (section_kind == rcuh_kind::TYPE) |
6370 | { | |
6371 | LONGEST type_offset; | |
6372 | ||
6373 | cu_header->signature = read_8_bytes (abfd, info_ptr); | |
6374 | info_ptr += 8; | |
6375 | ||
6376 | type_offset = read_offset (abfd, info_ptr, cu_header, &bytes_read); | |
6377 | info_ptr += bytes_read; | |
9c541725 PA |
6378 | cu_header->type_cu_offset_in_tu = (cu_offset) type_offset; |
6379 | if (to_underlying (cu_header->type_cu_offset_in_tu) != type_offset) | |
43988095 JK |
6380 | error (_("Dwarf Error: Too big type_offset in compilation unit " |
6381 | "header (is %s) [in module %s]"), plongest (type_offset), | |
6382 | filename); | |
6383 | } | |
6384 | ||
107d2387 AC |
6385 | return info_ptr; |
6386 | } | |
6387 | ||
36586728 TT |
6388 | /* Helper function that returns the proper abbrev section for |
6389 | THIS_CU. */ | |
6390 | ||
6391 | static struct dwarf2_section_info * | |
6392 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
6393 | { | |
6394 | struct dwarf2_section_info *abbrev; | |
ed2dc618 | 6395 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
36586728 TT |
6396 | |
6397 | if (this_cu->is_dwz) | |
ed2dc618 | 6398 | abbrev = &dwarf2_get_dwz_file (dwarf2_per_objfile)->abbrev; |
36586728 TT |
6399 | else |
6400 | abbrev = &dwarf2_per_objfile->abbrev; | |
6401 | ||
6402 | return abbrev; | |
6403 | } | |
6404 | ||
9ff913ba DE |
6405 | /* Subroutine of read_and_check_comp_unit_head and |
6406 | read_and_check_type_unit_head to simplify them. | |
6407 | Perform various error checking on the header. */ | |
6408 | ||
6409 | static void | |
ed2dc618 SM |
6410 | error_check_comp_unit_head (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6411 | struct comp_unit_head *header, | |
4bdcc0c1 DE |
6412 | struct dwarf2_section_info *section, |
6413 | struct dwarf2_section_info *abbrev_section) | |
9ff913ba | 6414 | { |
a32a8923 | 6415 | const char *filename = get_section_file_name (section); |
9ff913ba | 6416 | |
9c541725 | 6417 | if (to_underlying (header->abbrev_sect_off) |
36586728 | 6418 | >= dwarf2_section_size (dwarf2_per_objfile->objfile, abbrev_section)) |
9d8780f0 SM |
6419 | error (_("Dwarf Error: bad offset (%s) in compilation unit header " |
6420 | "(offset %s + 6) [in module %s]"), | |
6421 | sect_offset_str (header->abbrev_sect_off), | |
6422 | sect_offset_str (header->sect_off), | |
9ff913ba DE |
6423 | filename); |
6424 | ||
9c541725 | 6425 | /* Cast to ULONGEST to use 64-bit arithmetic when possible to |
9ff913ba | 6426 | avoid potential 32-bit overflow. */ |
9c541725 | 6427 | if (((ULONGEST) header->sect_off + get_cu_length (header)) |
9ff913ba | 6428 | > section->size) |
9c541725 | 6429 | error (_("Dwarf Error: bad length (0x%x) in compilation unit header " |
9d8780f0 SM |
6430 | "(offset %s + 0) [in module %s]"), |
6431 | header->length, sect_offset_str (header->sect_off), | |
9ff913ba DE |
6432 | filename); |
6433 | } | |
6434 | ||
6435 | /* Read in a CU/TU header and perform some basic error checking. | |
6436 | The contents of the header are stored in HEADER. | |
6437 | The result is a pointer to the start of the first DIE. */ | |
adabb602 | 6438 | |
d521ce57 | 6439 | static const gdb_byte * |
ed2dc618 SM |
6440 | read_and_check_comp_unit_head (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6441 | struct comp_unit_head *header, | |
9ff913ba | 6442 | struct dwarf2_section_info *section, |
4bdcc0c1 | 6443 | struct dwarf2_section_info *abbrev_section, |
d521ce57 | 6444 | const gdb_byte *info_ptr, |
43988095 | 6445 | rcuh_kind section_kind) |
72bf9492 | 6446 | { |
d521ce57 | 6447 | const gdb_byte *beg_of_comp_unit = info_ptr; |
72bf9492 | 6448 | |
9c541725 | 6449 | header->sect_off = (sect_offset) (beg_of_comp_unit - section->buffer); |
adabb602 | 6450 | |
43988095 | 6451 | info_ptr = read_comp_unit_head (header, info_ptr, section, section_kind); |
9ff913ba | 6452 | |
9c541725 | 6453 | header->first_die_cu_offset = (cu_offset) (info_ptr - beg_of_comp_unit); |
348e048f | 6454 | |
ed2dc618 SM |
6455 | error_check_comp_unit_head (dwarf2_per_objfile, header, section, |
6456 | abbrev_section); | |
9ff913ba DE |
6457 | |
6458 | return info_ptr; | |
348e048f DE |
6459 | } |
6460 | ||
f4dc4d17 DE |
6461 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
6462 | ||
6463 | static sect_offset | |
ed2dc618 SM |
6464 | read_abbrev_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6465 | struct dwarf2_section_info *section, | |
9c541725 | 6466 | sect_offset sect_off) |
f4dc4d17 | 6467 | { |
a32a8923 | 6468 | bfd *abfd = get_section_bfd_owner (section); |
d521ce57 | 6469 | const gdb_byte *info_ptr; |
ac298888 | 6470 | unsigned int initial_length_size, offset_size; |
43988095 | 6471 | uint16_t version; |
f4dc4d17 DE |
6472 | |
6473 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
9c541725 | 6474 | info_ptr = section->buffer + to_underlying (sect_off); |
ac298888 | 6475 | read_initial_length (abfd, info_ptr, &initial_length_size); |
f4dc4d17 | 6476 | offset_size = initial_length_size == 4 ? 4 : 8; |
43988095 JK |
6477 | info_ptr += initial_length_size; |
6478 | ||
6479 | version = read_2_bytes (abfd, info_ptr); | |
6480 | info_ptr += 2; | |
6481 | if (version >= 5) | |
6482 | { | |
6483 | /* Skip unit type and address size. */ | |
6484 | info_ptr += 2; | |
6485 | } | |
6486 | ||
9c541725 | 6487 | return (sect_offset) read_offset_1 (abfd, info_ptr, offset_size); |
f4dc4d17 DE |
6488 | } |
6489 | ||
aaa75496 JB |
6490 | /* Allocate a new partial symtab for file named NAME and mark this new |
6491 | partial symtab as being an include of PST. */ | |
6492 | ||
6493 | static void | |
d521ce57 | 6494 | dwarf2_create_include_psymtab (const char *name, struct partial_symtab *pst, |
aaa75496 JB |
6495 | struct objfile *objfile) |
6496 | { | |
6497 | struct partial_symtab *subpst = allocate_psymtab (name, objfile); | |
6498 | ||
fbd9ab74 JK |
6499 | if (!IS_ABSOLUTE_PATH (subpst->filename)) |
6500 | { | |
6501 | /* It shares objfile->objfile_obstack. */ | |
6502 | subpst->dirname = pst->dirname; | |
6503 | } | |
6504 | ||
aaa75496 JB |
6505 | subpst->textlow = 0; |
6506 | subpst->texthigh = 0; | |
6507 | ||
8d749320 SM |
6508 | subpst->dependencies |
6509 | = XOBNEW (&objfile->objfile_obstack, struct partial_symtab *); | |
aaa75496 JB |
6510 | subpst->dependencies[0] = pst; |
6511 | subpst->number_of_dependencies = 1; | |
6512 | ||
6513 | subpst->globals_offset = 0; | |
6514 | subpst->n_global_syms = 0; | |
6515 | subpst->statics_offset = 0; | |
6516 | subpst->n_static_syms = 0; | |
43f3e411 | 6517 | subpst->compunit_symtab = NULL; |
aaa75496 JB |
6518 | subpst->read_symtab = pst->read_symtab; |
6519 | subpst->readin = 0; | |
6520 | ||
6521 | /* No private part is necessary for include psymtabs. This property | |
6522 | can be used to differentiate between such include psymtabs and | |
10b3939b | 6523 | the regular ones. */ |
58a9656e | 6524 | subpst->read_symtab_private = NULL; |
aaa75496 JB |
6525 | } |
6526 | ||
6527 | /* Read the Line Number Program data and extract the list of files | |
6528 | included by the source file represented by PST. Build an include | |
d85a05f0 | 6529 | partial symtab for each of these included files. */ |
aaa75496 JB |
6530 | |
6531 | static void | |
6532 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 DE |
6533 | struct die_info *die, |
6534 | struct partial_symtab *pst) | |
aaa75496 | 6535 | { |
fff8551c | 6536 | line_header_up lh; |
d85a05f0 | 6537 | struct attribute *attr; |
aaa75496 | 6538 | |
d85a05f0 DJ |
6539 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
6540 | if (attr) | |
9c541725 | 6541 | lh = dwarf_decode_line_header ((sect_offset) DW_UNSND (attr), cu); |
aaa75496 JB |
6542 | if (lh == NULL) |
6543 | return; /* No linetable, so no includes. */ | |
6544 | ||
c6da4cef | 6545 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). */ |
fff8551c | 6546 | dwarf_decode_lines (lh.get (), pst->dirname, cu, pst, pst->textlow, 1); |
aaa75496 JB |
6547 | } |
6548 | ||
348e048f | 6549 | static hashval_t |
52dc124a | 6550 | hash_signatured_type (const void *item) |
348e048f | 6551 | { |
9a3c8263 SM |
6552 | const struct signatured_type *sig_type |
6553 | = (const struct signatured_type *) item; | |
9a619af0 | 6554 | |
348e048f | 6555 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 6556 | return sig_type->signature; |
348e048f DE |
6557 | } |
6558 | ||
6559 | static int | |
52dc124a | 6560 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f | 6561 | { |
9a3c8263 SM |
6562 | const struct signatured_type *lhs = (const struct signatured_type *) item_lhs; |
6563 | const struct signatured_type *rhs = (const struct signatured_type *) item_rhs; | |
9a619af0 | 6564 | |
348e048f DE |
6565 | return lhs->signature == rhs->signature; |
6566 | } | |
6567 | ||
1fd400ff TT |
6568 | /* Allocate a hash table for signatured types. */ |
6569 | ||
6570 | static htab_t | |
673bfd45 | 6571 | allocate_signatured_type_table (struct objfile *objfile) |
1fd400ff TT |
6572 | { |
6573 | return htab_create_alloc_ex (41, | |
52dc124a DE |
6574 | hash_signatured_type, |
6575 | eq_signatured_type, | |
1fd400ff TT |
6576 | NULL, |
6577 | &objfile->objfile_obstack, | |
6578 | hashtab_obstack_allocate, | |
6579 | dummy_obstack_deallocate); | |
6580 | } | |
6581 | ||
d467dd73 | 6582 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
6583 | |
6584 | static int | |
d467dd73 | 6585 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff | 6586 | { |
9a3c8263 | 6587 | struct signatured_type *sigt = (struct signatured_type *) *slot; |
b2bdb8cf SM |
6588 | std::vector<signatured_type *> *all_type_units |
6589 | = (std::vector<signatured_type *> *) datum; | |
1fd400ff | 6590 | |
b2bdb8cf | 6591 | all_type_units->push_back (sigt); |
1fd400ff TT |
6592 | |
6593 | return 1; | |
6594 | } | |
6595 | ||
78d4d2c5 | 6596 | /* A helper for create_debug_types_hash_table. Read types from SECTION |
43988095 JK |
6597 | and fill them into TYPES_HTAB. It will process only type units, |
6598 | therefore DW_UT_type. */ | |
c88ee1f0 | 6599 | |
78d4d2c5 | 6600 | static void |
ed2dc618 SM |
6601 | create_debug_type_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6602 | struct dwo_file *dwo_file, | |
43988095 JK |
6603 | dwarf2_section_info *section, htab_t &types_htab, |
6604 | rcuh_kind section_kind) | |
348e048f | 6605 | { |
3019eac3 | 6606 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
4bdcc0c1 | 6607 | struct dwarf2_section_info *abbrev_section; |
78d4d2c5 JK |
6608 | bfd *abfd; |
6609 | const gdb_byte *info_ptr, *end_ptr; | |
348e048f | 6610 | |
4bdcc0c1 DE |
6611 | abbrev_section = (dwo_file != NULL |
6612 | ? &dwo_file->sections.abbrev | |
6613 | : &dwarf2_per_objfile->abbrev); | |
6614 | ||
b4f54984 | 6615 | if (dwarf_read_debug) |
43988095 JK |
6616 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", |
6617 | get_section_name (section), | |
a32a8923 | 6618 | get_section_file_name (abbrev_section)); |
09406207 | 6619 | |
78d4d2c5 JK |
6620 | dwarf2_read_section (objfile, section); |
6621 | info_ptr = section->buffer; | |
348e048f | 6622 | |
78d4d2c5 JK |
6623 | if (info_ptr == NULL) |
6624 | return; | |
348e048f | 6625 | |
78d4d2c5 JK |
6626 | /* We can't set abfd until now because the section may be empty or |
6627 | not present, in which case the bfd is unknown. */ | |
6628 | abfd = get_section_bfd_owner (section); | |
348e048f | 6629 | |
78d4d2c5 JK |
6630 | /* We don't use init_cutu_and_read_dies_simple, or some such, here |
6631 | because we don't need to read any dies: the signature is in the | |
6632 | header. */ | |
3019eac3 | 6633 | |
78d4d2c5 JK |
6634 | end_ptr = info_ptr + section->size; |
6635 | while (info_ptr < end_ptr) | |
6636 | { | |
78d4d2c5 JK |
6637 | struct signatured_type *sig_type; |
6638 | struct dwo_unit *dwo_tu; | |
6639 | void **slot; | |
6640 | const gdb_byte *ptr = info_ptr; | |
6641 | struct comp_unit_head header; | |
6642 | unsigned int length; | |
8b70b953 | 6643 | |
9c541725 | 6644 | sect_offset sect_off = (sect_offset) (ptr - section->buffer); |
348e048f | 6645 | |
a49dd8dd JK |
6646 | /* Initialize it due to a false compiler warning. */ |
6647 | header.signature = -1; | |
9c541725 | 6648 | header.type_cu_offset_in_tu = (cu_offset) -1; |
a49dd8dd | 6649 | |
78d4d2c5 JK |
6650 | /* We need to read the type's signature in order to build the hash |
6651 | table, but we don't need anything else just yet. */ | |
348e048f | 6652 | |
ed2dc618 | 6653 | ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, &header, section, |
43988095 | 6654 | abbrev_section, ptr, section_kind); |
348e048f | 6655 | |
78d4d2c5 | 6656 | length = get_cu_length (&header); |
6caca83c | 6657 | |
78d4d2c5 JK |
6658 | /* Skip dummy type units. */ |
6659 | if (ptr >= info_ptr + length | |
43988095 JK |
6660 | || peek_abbrev_code (abfd, ptr) == 0 |
6661 | || header.unit_type != DW_UT_type) | |
78d4d2c5 JK |
6662 | { |
6663 | info_ptr += length; | |
6664 | continue; | |
6665 | } | |
dee91e82 | 6666 | |
78d4d2c5 JK |
6667 | if (types_htab == NULL) |
6668 | { | |
6669 | if (dwo_file) | |
6670 | types_htab = allocate_dwo_unit_table (objfile); | |
6671 | else | |
6672 | types_htab = allocate_signatured_type_table (objfile); | |
6673 | } | |
8b70b953 | 6674 | |
78d4d2c5 JK |
6675 | if (dwo_file) |
6676 | { | |
6677 | sig_type = NULL; | |
6678 | dwo_tu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6679 | struct dwo_unit); | |
6680 | dwo_tu->dwo_file = dwo_file; | |
43988095 | 6681 | dwo_tu->signature = header.signature; |
9c541725 | 6682 | dwo_tu->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 | 6683 | dwo_tu->section = section; |
9c541725 | 6684 | dwo_tu->sect_off = sect_off; |
78d4d2c5 JK |
6685 | dwo_tu->length = length; |
6686 | } | |
6687 | else | |
6688 | { | |
6689 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
6690 | The real type_offset is in the DWO file. */ | |
6691 | dwo_tu = NULL; | |
6692 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6693 | struct signatured_type); | |
43988095 | 6694 | sig_type->signature = header.signature; |
9c541725 | 6695 | sig_type->type_offset_in_tu = header.type_cu_offset_in_tu; |
e3b94546 | 6696 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
78d4d2c5 JK |
6697 | sig_type->per_cu.is_debug_types = 1; |
6698 | sig_type->per_cu.section = section; | |
9c541725 | 6699 | sig_type->per_cu.sect_off = sect_off; |
78d4d2c5 JK |
6700 | sig_type->per_cu.length = length; |
6701 | } | |
6702 | ||
6703 | slot = htab_find_slot (types_htab, | |
6704 | dwo_file ? (void*) dwo_tu : (void *) sig_type, | |
6705 | INSERT); | |
6706 | gdb_assert (slot != NULL); | |
6707 | if (*slot != NULL) | |
6708 | { | |
9c541725 | 6709 | sect_offset dup_sect_off; |
0349ea22 | 6710 | |
3019eac3 DE |
6711 | if (dwo_file) |
6712 | { | |
78d4d2c5 JK |
6713 | const struct dwo_unit *dup_tu |
6714 | = (const struct dwo_unit *) *slot; | |
6715 | ||
9c541725 | 6716 | dup_sect_off = dup_tu->sect_off; |
3019eac3 DE |
6717 | } |
6718 | else | |
6719 | { | |
78d4d2c5 JK |
6720 | const struct signatured_type *dup_tu |
6721 | = (const struct signatured_type *) *slot; | |
6722 | ||
9c541725 | 6723 | dup_sect_off = dup_tu->per_cu.sect_off; |
3019eac3 | 6724 | } |
8b70b953 | 6725 | |
b98664d3 | 6726 | complaint (_("debug type entry at offset %s is duplicate to" |
9d8780f0 SM |
6727 | " the entry at offset %s, signature %s"), |
6728 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
43988095 | 6729 | hex_string (header.signature)); |
78d4d2c5 JK |
6730 | } |
6731 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; | |
3019eac3 | 6732 | |
78d4d2c5 | 6733 | if (dwarf_read_debug > 1) |
9d8780f0 SM |
6734 | fprintf_unfiltered (gdb_stdlog, " offset %s, signature %s\n", |
6735 | sect_offset_str (sect_off), | |
43988095 | 6736 | hex_string (header.signature)); |
3019eac3 | 6737 | |
78d4d2c5 JK |
6738 | info_ptr += length; |
6739 | } | |
6740 | } | |
3019eac3 | 6741 | |
78d4d2c5 JK |
6742 | /* Create the hash table of all entries in the .debug_types |
6743 | (or .debug_types.dwo) section(s). | |
6744 | If reading a DWO file, then DWO_FILE is a pointer to the DWO file object, | |
6745 | otherwise it is NULL. | |
b3c8eb43 | 6746 | |
78d4d2c5 | 6747 | The result is a pointer to the hash table or NULL if there are no types. |
348e048f | 6748 | |
78d4d2c5 | 6749 | Note: This function processes DWO files only, not DWP files. */ |
348e048f | 6750 | |
78d4d2c5 | 6751 | static void |
ed2dc618 SM |
6752 | create_debug_types_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6753 | struct dwo_file *dwo_file, | |
78d4d2c5 JK |
6754 | VEC (dwarf2_section_info_def) *types, |
6755 | htab_t &types_htab) | |
6756 | { | |
6757 | int ix; | |
6758 | struct dwarf2_section_info *section; | |
6759 | ||
6760 | if (VEC_empty (dwarf2_section_info_def, types)) | |
6761 | return; | |
348e048f | 6762 | |
78d4d2c5 JK |
6763 | for (ix = 0; |
6764 | VEC_iterate (dwarf2_section_info_def, types, ix, section); | |
6765 | ++ix) | |
ed2dc618 SM |
6766 | create_debug_type_hash_table (dwarf2_per_objfile, dwo_file, section, |
6767 | types_htab, rcuh_kind::TYPE); | |
3019eac3 DE |
6768 | } |
6769 | ||
6770 | /* Create the hash table of all entries in the .debug_types section, | |
6771 | and initialize all_type_units. | |
6772 | The result is zero if there is an error (e.g. missing .debug_types section), | |
6773 | otherwise non-zero. */ | |
6774 | ||
6775 | static int | |
ed2dc618 | 6776 | create_all_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
3019eac3 | 6777 | { |
78d4d2c5 | 6778 | htab_t types_htab = NULL; |
3019eac3 | 6779 | |
ed2dc618 SM |
6780 | create_debug_type_hash_table (dwarf2_per_objfile, NULL, |
6781 | &dwarf2_per_objfile->info, types_htab, | |
43988095 | 6782 | rcuh_kind::COMPILE); |
ed2dc618 SM |
6783 | create_debug_types_hash_table (dwarf2_per_objfile, NULL, |
6784 | dwarf2_per_objfile->types, types_htab); | |
3019eac3 DE |
6785 | if (types_htab == NULL) |
6786 | { | |
6787 | dwarf2_per_objfile->signatured_types = NULL; | |
6788 | return 0; | |
6789 | } | |
6790 | ||
348e048f DE |
6791 | dwarf2_per_objfile->signatured_types = types_htab; |
6792 | ||
b2bdb8cf SM |
6793 | gdb_assert (dwarf2_per_objfile->all_type_units.empty ()); |
6794 | dwarf2_per_objfile->all_type_units.reserve (htab_elements (types_htab)); | |
6795 | ||
6796 | htab_traverse_noresize (types_htab, add_signatured_type_cu_to_table, | |
6797 | &dwarf2_per_objfile->all_type_units); | |
1fd400ff | 6798 | |
348e048f DE |
6799 | return 1; |
6800 | } | |
6801 | ||
6aa5f3a6 DE |
6802 | /* Add an entry for signature SIG to dwarf2_per_objfile->signatured_types. |
6803 | If SLOT is non-NULL, it is the entry to use in the hash table. | |
6804 | Otherwise we find one. */ | |
6805 | ||
6806 | static struct signatured_type * | |
ed2dc618 SM |
6807 | add_type_unit (struct dwarf2_per_objfile *dwarf2_per_objfile, ULONGEST sig, |
6808 | void **slot) | |
6aa5f3a6 DE |
6809 | { |
6810 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6aa5f3a6 | 6811 | |
b2bdb8cf SM |
6812 | if (dwarf2_per_objfile->all_type_units.size () |
6813 | == dwarf2_per_objfile->all_type_units.capacity ()) | |
6814 | ++dwarf2_per_objfile->tu_stats.nr_all_type_units_reallocs; | |
6aa5f3a6 | 6815 | |
b2bdb8cf SM |
6816 | signatured_type *sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
6817 | struct signatured_type); | |
6818 | ||
6819 | dwarf2_per_objfile->all_type_units.push_back (sig_type); | |
6aa5f3a6 DE |
6820 | sig_type->signature = sig; |
6821 | sig_type->per_cu.is_debug_types = 1; | |
6822 | if (dwarf2_per_objfile->using_index) | |
6823 | { | |
6824 | sig_type->per_cu.v.quick = | |
6825 | OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6826 | struct dwarf2_per_cu_quick_data); | |
6827 | } | |
6828 | ||
6829 | if (slot == NULL) | |
6830 | { | |
6831 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, | |
6832 | sig_type, INSERT); | |
6833 | } | |
6834 | gdb_assert (*slot == NULL); | |
6835 | *slot = sig_type; | |
6836 | /* The rest of sig_type must be filled in by the caller. */ | |
6837 | return sig_type; | |
6838 | } | |
6839 | ||
a2ce51a0 DE |
6840 | /* Subroutine of lookup_dwo_signatured_type and lookup_dwp_signatured_type. |
6841 | Fill in SIG_ENTRY with DWO_ENTRY. */ | |
6842 | ||
6843 | static void | |
ed2dc618 | 6844 | fill_in_sig_entry_from_dwo_entry (struct dwarf2_per_objfile *dwarf2_per_objfile, |
a2ce51a0 DE |
6845 | struct signatured_type *sig_entry, |
6846 | struct dwo_unit *dwo_entry) | |
6847 | { | |
7ee85ab1 | 6848 | /* Make sure we're not clobbering something we don't expect to. */ |
a2ce51a0 DE |
6849 | gdb_assert (! sig_entry->per_cu.queued); |
6850 | gdb_assert (sig_entry->per_cu.cu == NULL); | |
6aa5f3a6 DE |
6851 | if (dwarf2_per_objfile->using_index) |
6852 | { | |
6853 | gdb_assert (sig_entry->per_cu.v.quick != NULL); | |
43f3e411 | 6854 | gdb_assert (sig_entry->per_cu.v.quick->compunit_symtab == NULL); |
6aa5f3a6 DE |
6855 | } |
6856 | else | |
6857 | gdb_assert (sig_entry->per_cu.v.psymtab == NULL); | |
a2ce51a0 | 6858 | gdb_assert (sig_entry->signature == dwo_entry->signature); |
9c541725 | 6859 | gdb_assert (to_underlying (sig_entry->type_offset_in_section) == 0); |
a2ce51a0 | 6860 | gdb_assert (sig_entry->type_unit_group == NULL); |
7ee85ab1 DE |
6861 | gdb_assert (sig_entry->dwo_unit == NULL); |
6862 | ||
6863 | sig_entry->per_cu.section = dwo_entry->section; | |
9c541725 | 6864 | sig_entry->per_cu.sect_off = dwo_entry->sect_off; |
7ee85ab1 DE |
6865 | sig_entry->per_cu.length = dwo_entry->length; |
6866 | sig_entry->per_cu.reading_dwo_directly = 1; | |
e3b94546 | 6867 | sig_entry->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
a2ce51a0 DE |
6868 | sig_entry->type_offset_in_tu = dwo_entry->type_offset_in_tu; |
6869 | sig_entry->dwo_unit = dwo_entry; | |
6870 | } | |
6871 | ||
6872 | /* Subroutine of lookup_signatured_type. | |
7ee85ab1 DE |
6873 | If we haven't read the TU yet, create the signatured_type data structure |
6874 | for a TU to be read in directly from a DWO file, bypassing the stub. | |
6875 | This is the "Stay in DWO Optimization": When there is no DWP file and we're | |
6876 | using .gdb_index, then when reading a CU we want to stay in the DWO file | |
6877 | containing that CU. Otherwise we could end up reading several other DWO | |
6878 | files (due to comdat folding) to process the transitive closure of all the | |
6879 | mentioned TUs, and that can be slow. The current DWO file will have every | |
6880 | type signature that it needs. | |
a2ce51a0 DE |
6881 | We only do this for .gdb_index because in the psymtab case we already have |
6882 | to read all the DWOs to build the type unit groups. */ | |
6883 | ||
6884 | static struct signatured_type * | |
6885 | lookup_dwo_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6886 | { | |
518817b3 SM |
6887 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6888 | = cu->per_cu->dwarf2_per_objfile; | |
a2ce51a0 DE |
6889 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
6890 | struct dwo_file *dwo_file; | |
6891 | struct dwo_unit find_dwo_entry, *dwo_entry; | |
6892 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6893 | void **slot; |
a2ce51a0 DE |
6894 | |
6895 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
6896 | ||
6aa5f3a6 DE |
6897 | /* If TU skeletons have been removed then we may not have read in any |
6898 | TUs yet. */ | |
6899 | if (dwarf2_per_objfile->signatured_types == NULL) | |
6900 | { | |
6901 | dwarf2_per_objfile->signatured_types | |
6902 | = allocate_signatured_type_table (objfile); | |
6903 | } | |
a2ce51a0 DE |
6904 | |
6905 | /* We only ever need to read in one copy of a signatured type. | |
6aa5f3a6 DE |
6906 | Use the global signatured_types array to do our own comdat-folding |
6907 | of types. If this is the first time we're reading this TU, and | |
6908 | the TU has an entry in .gdb_index, replace the recorded data from | |
6909 | .gdb_index with this TU. */ | |
a2ce51a0 | 6910 | |
a2ce51a0 | 6911 | find_sig_entry.signature = sig; |
6aa5f3a6 DE |
6912 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, |
6913 | &find_sig_entry, INSERT); | |
9a3c8263 | 6914 | sig_entry = (struct signatured_type *) *slot; |
7ee85ab1 DE |
6915 | |
6916 | /* We can get here with the TU already read, *or* in the process of being | |
6aa5f3a6 DE |
6917 | read. Don't reassign the global entry to point to this DWO if that's |
6918 | the case. Also note that if the TU is already being read, it may not | |
6919 | have come from a DWO, the program may be a mix of Fission-compiled | |
6920 | code and non-Fission-compiled code. */ | |
6921 | ||
6922 | /* Have we already tried to read this TU? | |
6923 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
6924 | needn't exist in the global table yet). */ | |
6925 | if (sig_entry != NULL && sig_entry->per_cu.tu_read) | |
a2ce51a0 DE |
6926 | return sig_entry; |
6927 | ||
6aa5f3a6 DE |
6928 | /* Note: cu->dwo_unit is the dwo_unit that references this TU, not the |
6929 | dwo_unit of the TU itself. */ | |
6930 | dwo_file = cu->dwo_unit->dwo_file; | |
6931 | ||
a2ce51a0 DE |
6932 | /* Ok, this is the first time we're reading this TU. */ |
6933 | if (dwo_file->tus == NULL) | |
6934 | return NULL; | |
6935 | find_dwo_entry.signature = sig; | |
9a3c8263 | 6936 | dwo_entry = (struct dwo_unit *) htab_find (dwo_file->tus, &find_dwo_entry); |
a2ce51a0 DE |
6937 | if (dwo_entry == NULL) |
6938 | return NULL; | |
6939 | ||
6aa5f3a6 DE |
6940 | /* If the global table doesn't have an entry for this TU, add one. */ |
6941 | if (sig_entry == NULL) | |
ed2dc618 | 6942 | sig_entry = add_type_unit (dwarf2_per_objfile, sig, slot); |
6aa5f3a6 | 6943 | |
ed2dc618 | 6944 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, sig_entry, dwo_entry); |
89e63ee4 | 6945 | sig_entry->per_cu.tu_read = 1; |
a2ce51a0 DE |
6946 | return sig_entry; |
6947 | } | |
6948 | ||
a2ce51a0 DE |
6949 | /* Subroutine of lookup_signatured_type. |
6950 | Look up the type for signature SIG, and if we can't find SIG in .gdb_index | |
6aa5f3a6 DE |
6951 | then try the DWP file. If the TU stub (skeleton) has been removed then |
6952 | it won't be in .gdb_index. */ | |
a2ce51a0 DE |
6953 | |
6954 | static struct signatured_type * | |
6955 | lookup_dwp_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6956 | { | |
518817b3 SM |
6957 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6958 | = cu->per_cu->dwarf2_per_objfile; | |
a2ce51a0 | 6959 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
ed2dc618 | 6960 | struct dwp_file *dwp_file = get_dwp_file (dwarf2_per_objfile); |
a2ce51a0 DE |
6961 | struct dwo_unit *dwo_entry; |
6962 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6963 | void **slot; |
a2ce51a0 DE |
6964 | |
6965 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
6966 | gdb_assert (dwp_file != NULL); | |
6967 | ||
6aa5f3a6 DE |
6968 | /* If TU skeletons have been removed then we may not have read in any |
6969 | TUs yet. */ | |
6970 | if (dwarf2_per_objfile->signatured_types == NULL) | |
a2ce51a0 | 6971 | { |
6aa5f3a6 DE |
6972 | dwarf2_per_objfile->signatured_types |
6973 | = allocate_signatured_type_table (objfile); | |
a2ce51a0 DE |
6974 | } |
6975 | ||
6aa5f3a6 DE |
6976 | find_sig_entry.signature = sig; |
6977 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, | |
6978 | &find_sig_entry, INSERT); | |
9a3c8263 | 6979 | sig_entry = (struct signatured_type *) *slot; |
6aa5f3a6 DE |
6980 | |
6981 | /* Have we already tried to read this TU? | |
6982 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
6983 | needn't exist in the global table yet). */ | |
6984 | if (sig_entry != NULL) | |
6985 | return sig_entry; | |
6986 | ||
a2ce51a0 DE |
6987 | if (dwp_file->tus == NULL) |
6988 | return NULL; | |
ed2dc618 | 6989 | dwo_entry = lookup_dwo_unit_in_dwp (dwarf2_per_objfile, dwp_file, NULL, |
57d63ce2 | 6990 | sig, 1 /* is_debug_types */); |
a2ce51a0 DE |
6991 | if (dwo_entry == NULL) |
6992 | return NULL; | |
6993 | ||
ed2dc618 SM |
6994 | sig_entry = add_type_unit (dwarf2_per_objfile, sig, slot); |
6995 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, sig_entry, dwo_entry); | |
a2ce51a0 | 6996 | |
a2ce51a0 DE |
6997 | return sig_entry; |
6998 | } | |
6999 | ||
380bca97 | 7000 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
5a8b3f62 DE |
7001 | Returns NULL if signature SIG is not present in the table. |
7002 | It is up to the caller to complain about this. */ | |
348e048f DE |
7003 | |
7004 | static struct signatured_type * | |
a2ce51a0 | 7005 | lookup_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) |
348e048f | 7006 | { |
518817b3 SM |
7007 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7008 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 7009 | |
a2ce51a0 DE |
7010 | if (cu->dwo_unit |
7011 | && dwarf2_per_objfile->using_index) | |
7012 | { | |
7013 | /* We're in a DWO/DWP file, and we're using .gdb_index. | |
7014 | These cases require special processing. */ | |
ed2dc618 | 7015 | if (get_dwp_file (dwarf2_per_objfile) == NULL) |
a2ce51a0 DE |
7016 | return lookup_dwo_signatured_type (cu, sig); |
7017 | else | |
7018 | return lookup_dwp_signatured_type (cu, sig); | |
7019 | } | |
7020 | else | |
7021 | { | |
7022 | struct signatured_type find_entry, *entry; | |
348e048f | 7023 | |
a2ce51a0 DE |
7024 | if (dwarf2_per_objfile->signatured_types == NULL) |
7025 | return NULL; | |
7026 | find_entry.signature = sig; | |
9a3c8263 SM |
7027 | entry = ((struct signatured_type *) |
7028 | htab_find (dwarf2_per_objfile->signatured_types, &find_entry)); | |
a2ce51a0 DE |
7029 | return entry; |
7030 | } | |
348e048f | 7031 | } |
42e7ad6c DE |
7032 | \f |
7033 | /* Low level DIE reading support. */ | |
348e048f | 7034 | |
d85a05f0 DJ |
7035 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
7036 | ||
7037 | static void | |
7038 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 7039 | struct dwarf2_cu *cu, |
3019eac3 | 7040 | struct dwarf2_section_info *section, |
685af9cd TT |
7041 | struct dwo_file *dwo_file, |
7042 | struct abbrev_table *abbrev_table) | |
d85a05f0 | 7043 | { |
fceca515 | 7044 | gdb_assert (section->readin && section->buffer != NULL); |
a32a8923 | 7045 | reader->abfd = get_section_bfd_owner (section); |
d85a05f0 | 7046 | reader->cu = cu; |
3019eac3 | 7047 | reader->dwo_file = dwo_file; |
dee91e82 DE |
7048 | reader->die_section = section; |
7049 | reader->buffer = section->buffer; | |
f664829e | 7050 | reader->buffer_end = section->buffer + section->size; |
a2ce51a0 | 7051 | reader->comp_dir = NULL; |
685af9cd | 7052 | reader->abbrev_table = abbrev_table; |
d85a05f0 DJ |
7053 | } |
7054 | ||
b0c7bfa9 DE |
7055 | /* Subroutine of init_cutu_and_read_dies to simplify it. |
7056 | Read in the rest of a CU/TU top level DIE from DWO_UNIT. | |
7057 | There's just a lot of work to do, and init_cutu_and_read_dies is big enough | |
7058 | already. | |
7059 | ||
7060 | STUB_COMP_UNIT_DIE is for the stub DIE, we copy over certain attributes | |
7061 | from it to the DIE in the DWO. If NULL we are skipping the stub. | |
a2ce51a0 DE |
7062 | STUB_COMP_DIR is similar to STUB_COMP_UNIT_DIE: When reading a TU directly |
7063 | from the DWO file, bypassing the stub, it contains the DW_AT_comp_dir | |
c54a1dd8 DE |
7064 | attribute of the referencing CU. At most one of STUB_COMP_UNIT_DIE and |
7065 | STUB_COMP_DIR may be non-NULL. | |
b0c7bfa9 DE |
7066 | *RESULT_READER,*RESULT_INFO_PTR,*RESULT_COMP_UNIT_DIE,*RESULT_HAS_CHILDREN |
7067 | are filled in with the info of the DIE from the DWO file. | |
685af9cd TT |
7068 | *RESULT_DWO_ABBREV_TABLE will be filled in with the abbrev table allocated |
7069 | from the dwo. Since *RESULT_READER references this abbrev table, it must be | |
7070 | kept around for at least as long as *RESULT_READER. | |
7071 | ||
b0c7bfa9 DE |
7072 | The result is non-zero if a valid (non-dummy) DIE was found. */ |
7073 | ||
7074 | static int | |
7075 | read_cutu_die_from_dwo (struct dwarf2_per_cu_data *this_cu, | |
7076 | struct dwo_unit *dwo_unit, | |
b0c7bfa9 | 7077 | struct die_info *stub_comp_unit_die, |
a2ce51a0 | 7078 | const char *stub_comp_dir, |
b0c7bfa9 | 7079 | struct die_reader_specs *result_reader, |
d521ce57 | 7080 | const gdb_byte **result_info_ptr, |
b0c7bfa9 | 7081 | struct die_info **result_comp_unit_die, |
685af9cd TT |
7082 | int *result_has_children, |
7083 | abbrev_table_up *result_dwo_abbrev_table) | |
b0c7bfa9 | 7084 | { |
ed2dc618 | 7085 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
b0c7bfa9 DE |
7086 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
7087 | struct dwarf2_cu *cu = this_cu->cu; | |
b0c7bfa9 | 7088 | bfd *abfd; |
d521ce57 | 7089 | const gdb_byte *begin_info_ptr, *info_ptr; |
b0c7bfa9 DE |
7090 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; |
7091 | int i,num_extra_attrs; | |
7092 | struct dwarf2_section_info *dwo_abbrev_section; | |
7093 | struct attribute *attr; | |
7094 | struct die_info *comp_unit_die; | |
7095 | ||
b0aeadb3 DE |
7096 | /* At most one of these may be provided. */ |
7097 | gdb_assert ((stub_comp_unit_die != NULL) + (stub_comp_dir != NULL) <= 1); | |
a2ce51a0 | 7098 | |
b0c7bfa9 DE |
7099 | /* These attributes aren't processed until later: |
7100 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
0d60c288 DE |
7101 | DW_AT_comp_dir is used now, to find the DWO file, but it is also |
7102 | referenced later. However, these attributes are found in the stub | |
7103 | which we won't have later. In order to not impose this complication | |
7104 | on the rest of the code, we read them here and copy them to the | |
7105 | DWO CU/TU die. */ | |
b0c7bfa9 DE |
7106 | |
7107 | stmt_list = NULL; | |
7108 | low_pc = NULL; | |
7109 | high_pc = NULL; | |
7110 | ranges = NULL; | |
7111 | comp_dir = NULL; | |
7112 | ||
7113 | if (stub_comp_unit_die != NULL) | |
7114 | { | |
7115 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
7116 | DWO file. */ | |
7117 | if (! this_cu->is_debug_types) | |
7118 | stmt_list = dwarf2_attr (stub_comp_unit_die, DW_AT_stmt_list, cu); | |
7119 | low_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_low_pc, cu); | |
7120 | high_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_high_pc, cu); | |
7121 | ranges = dwarf2_attr (stub_comp_unit_die, DW_AT_ranges, cu); | |
7122 | comp_dir = dwarf2_attr (stub_comp_unit_die, DW_AT_comp_dir, cu); | |
7123 | ||
7124 | /* There should be a DW_AT_addr_base attribute here (if needed). | |
7125 | We need the value before we can process DW_FORM_GNU_addr_index. */ | |
7126 | cu->addr_base = 0; | |
7127 | attr = dwarf2_attr (stub_comp_unit_die, DW_AT_GNU_addr_base, cu); | |
7128 | if (attr) | |
7129 | cu->addr_base = DW_UNSND (attr); | |
7130 | ||
7131 | /* There should be a DW_AT_ranges_base attribute here (if needed). | |
7132 | We need the value before we can process DW_AT_ranges. */ | |
7133 | cu->ranges_base = 0; | |
7134 | attr = dwarf2_attr (stub_comp_unit_die, DW_AT_GNU_ranges_base, cu); | |
7135 | if (attr) | |
7136 | cu->ranges_base = DW_UNSND (attr); | |
7137 | } | |
a2ce51a0 DE |
7138 | else if (stub_comp_dir != NULL) |
7139 | { | |
7140 | /* Reconstruct the comp_dir attribute to simplify the code below. */ | |
8d749320 | 7141 | comp_dir = XOBNEW (&cu->comp_unit_obstack, struct attribute); |
a2ce51a0 DE |
7142 | comp_dir->name = DW_AT_comp_dir; |
7143 | comp_dir->form = DW_FORM_string; | |
7144 | DW_STRING_IS_CANONICAL (comp_dir) = 0; | |
7145 | DW_STRING (comp_dir) = stub_comp_dir; | |
7146 | } | |
b0c7bfa9 DE |
7147 | |
7148 | /* Set up for reading the DWO CU/TU. */ | |
7149 | cu->dwo_unit = dwo_unit; | |
685af9cd | 7150 | dwarf2_section_info *section = dwo_unit->section; |
b0c7bfa9 | 7151 | dwarf2_read_section (objfile, section); |
a32a8923 | 7152 | abfd = get_section_bfd_owner (section); |
9c541725 PA |
7153 | begin_info_ptr = info_ptr = (section->buffer |
7154 | + to_underlying (dwo_unit->sect_off)); | |
b0c7bfa9 | 7155 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; |
b0c7bfa9 DE |
7156 | |
7157 | if (this_cu->is_debug_types) | |
7158 | { | |
b0c7bfa9 DE |
7159 | struct signatured_type *sig_type = (struct signatured_type *) this_cu; |
7160 | ||
ed2dc618 SM |
7161 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7162 | &cu->header, section, | |
b0c7bfa9 | 7163 | dwo_abbrev_section, |
43988095 | 7164 | info_ptr, rcuh_kind::TYPE); |
a2ce51a0 | 7165 | /* This is not an assert because it can be caused by bad debug info. */ |
43988095 | 7166 | if (sig_type->signature != cu->header.signature) |
a2ce51a0 DE |
7167 | { |
7168 | error (_("Dwarf Error: signature mismatch %s vs %s while reading" | |
9d8780f0 | 7169 | " TU at offset %s [in module %s]"), |
a2ce51a0 | 7170 | hex_string (sig_type->signature), |
43988095 | 7171 | hex_string (cu->header.signature), |
9d8780f0 | 7172 | sect_offset_str (dwo_unit->sect_off), |
a2ce51a0 DE |
7173 | bfd_get_filename (abfd)); |
7174 | } | |
9c541725 | 7175 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
7176 | /* For DWOs coming from DWP files, we don't know the CU length |
7177 | nor the type's offset in the TU until now. */ | |
7178 | dwo_unit->length = get_cu_length (&cu->header); | |
9c541725 | 7179 | dwo_unit->type_offset_in_tu = cu->header.type_cu_offset_in_tu; |
b0c7bfa9 DE |
7180 | |
7181 | /* Establish the type offset that can be used to lookup the type. | |
7182 | For DWO files, we don't know it until now. */ | |
9c541725 PA |
7183 | sig_type->type_offset_in_section |
7184 | = dwo_unit->sect_off + to_underlying (dwo_unit->type_offset_in_tu); | |
b0c7bfa9 DE |
7185 | } |
7186 | else | |
7187 | { | |
ed2dc618 SM |
7188 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7189 | &cu->header, section, | |
b0c7bfa9 | 7190 | dwo_abbrev_section, |
43988095 | 7191 | info_ptr, rcuh_kind::COMPILE); |
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 | until now. */ | |
7195 | dwo_unit->length = get_cu_length (&cu->header); | |
7196 | } | |
7197 | ||
685af9cd TT |
7198 | *result_dwo_abbrev_table |
7199 | = abbrev_table_read_table (dwarf2_per_objfile, dwo_abbrev_section, | |
7200 | cu->header.abbrev_sect_off); | |
7201 | init_cu_die_reader (result_reader, cu, section, dwo_unit->dwo_file, | |
7202 | result_dwo_abbrev_table->get ()); | |
b0c7bfa9 DE |
7203 | |
7204 | /* Read in the die, but leave space to copy over the attributes | |
7205 | from the stub. This has the benefit of simplifying the rest of | |
7206 | the code - all the work to maintain the illusion of a single | |
7207 | DW_TAG_{compile,type}_unit DIE is done here. */ | |
7208 | num_extra_attrs = ((stmt_list != NULL) | |
7209 | + (low_pc != NULL) | |
7210 | + (high_pc != NULL) | |
7211 | + (ranges != NULL) | |
7212 | + (comp_dir != NULL)); | |
7213 | info_ptr = read_full_die_1 (result_reader, result_comp_unit_die, info_ptr, | |
7214 | result_has_children, num_extra_attrs); | |
7215 | ||
7216 | /* Copy over the attributes from the stub to the DIE we just read in. */ | |
7217 | comp_unit_die = *result_comp_unit_die; | |
7218 | i = comp_unit_die->num_attrs; | |
7219 | if (stmt_list != NULL) | |
7220 | comp_unit_die->attrs[i++] = *stmt_list; | |
7221 | if (low_pc != NULL) | |
7222 | comp_unit_die->attrs[i++] = *low_pc; | |
7223 | if (high_pc != NULL) | |
7224 | comp_unit_die->attrs[i++] = *high_pc; | |
7225 | if (ranges != NULL) | |
7226 | comp_unit_die->attrs[i++] = *ranges; | |
7227 | if (comp_dir != NULL) | |
7228 | comp_unit_die->attrs[i++] = *comp_dir; | |
7229 | comp_unit_die->num_attrs += num_extra_attrs; | |
7230 | ||
b4f54984 | 7231 | if (dwarf_die_debug) |
bf6af496 DE |
7232 | { |
7233 | fprintf_unfiltered (gdb_stdlog, | |
7234 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 7235 | get_section_name (section), |
bf6af496 DE |
7236 | (unsigned) (begin_info_ptr - section->buffer), |
7237 | bfd_get_filename (abfd)); | |
b4f54984 | 7238 | dump_die (comp_unit_die, dwarf_die_debug); |
bf6af496 DE |
7239 | } |
7240 | ||
a2ce51a0 DE |
7241 | /* Save the comp_dir attribute. If there is no DWP file then we'll read |
7242 | TUs by skipping the stub and going directly to the entry in the DWO file. | |
7243 | However, skipping the stub means we won't get DW_AT_comp_dir, so we have | |
7244 | to get it via circuitous means. Blech. */ | |
7245 | if (comp_dir != NULL) | |
7246 | result_reader->comp_dir = DW_STRING (comp_dir); | |
7247 | ||
b0c7bfa9 DE |
7248 | /* Skip dummy compilation units. */ |
7249 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
7250 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
7251 | return 0; | |
7252 | ||
7253 | *result_info_ptr = info_ptr; | |
7254 | return 1; | |
7255 | } | |
7256 | ||
7257 | /* Subroutine of init_cutu_and_read_dies to simplify it. | |
7258 | Look up the DWO unit specified by COMP_UNIT_DIE of THIS_CU. | |
6a506a2d | 7259 | Returns NULL if the specified DWO unit cannot be found. */ |
b0c7bfa9 DE |
7260 | |
7261 | static struct dwo_unit * | |
7262 | lookup_dwo_unit (struct dwarf2_per_cu_data *this_cu, | |
7263 | struct die_info *comp_unit_die) | |
7264 | { | |
7265 | struct dwarf2_cu *cu = this_cu->cu; | |
b0c7bfa9 DE |
7266 | ULONGEST signature; |
7267 | struct dwo_unit *dwo_unit; | |
7268 | const char *comp_dir, *dwo_name; | |
7269 | ||
a2ce51a0 DE |
7270 | gdb_assert (cu != NULL); |
7271 | ||
b0c7bfa9 | 7272 | /* Yeah, we look dwo_name up again, but it simplifies the code. */ |
7d45c7c3 KB |
7273 | dwo_name = dwarf2_string_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); |
7274 | comp_dir = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); | |
b0c7bfa9 DE |
7275 | |
7276 | if (this_cu->is_debug_types) | |
7277 | { | |
7278 | struct signatured_type *sig_type; | |
7279 | ||
7280 | /* Since this_cu is the first member of struct signatured_type, | |
7281 | we can go from a pointer to one to a pointer to the other. */ | |
7282 | sig_type = (struct signatured_type *) this_cu; | |
7283 | signature = sig_type->signature; | |
7284 | dwo_unit = lookup_dwo_type_unit (sig_type, dwo_name, comp_dir); | |
7285 | } | |
7286 | else | |
7287 | { | |
7288 | struct attribute *attr; | |
7289 | ||
7290 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
7291 | if (! attr) | |
7292 | error (_("Dwarf Error: missing dwo_id for dwo_name %s" | |
7293 | " [in module %s]"), | |
e3b94546 | 7294 | dwo_name, objfile_name (this_cu->dwarf2_per_objfile->objfile)); |
b0c7bfa9 DE |
7295 | signature = DW_UNSND (attr); |
7296 | dwo_unit = lookup_dwo_comp_unit (this_cu, dwo_name, comp_dir, | |
7297 | signature); | |
7298 | } | |
7299 | ||
b0c7bfa9 DE |
7300 | return dwo_unit; |
7301 | } | |
7302 | ||
a2ce51a0 | 7303 | /* Subroutine of init_cutu_and_read_dies to simplify it. |
6aa5f3a6 | 7304 | See it for a description of the parameters. |
fcd3b13d | 7305 | Read a TU directly from a DWO file, bypassing the stub. */ |
a2ce51a0 DE |
7306 | |
7307 | static void | |
6aa5f3a6 DE |
7308 | init_tu_and_read_dwo_dies (struct dwarf2_per_cu_data *this_cu, |
7309 | int use_existing_cu, int keep, | |
a2ce51a0 DE |
7310 | die_reader_func_ftype *die_reader_func, |
7311 | void *data) | |
7312 | { | |
fcd3b13d | 7313 | std::unique_ptr<dwarf2_cu> new_cu; |
a2ce51a0 | 7314 | struct signatured_type *sig_type; |
a2ce51a0 DE |
7315 | struct die_reader_specs reader; |
7316 | const gdb_byte *info_ptr; | |
7317 | struct die_info *comp_unit_die; | |
7318 | int has_children; | |
ed2dc618 | 7319 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
a2ce51a0 DE |
7320 | |
7321 | /* Verify we can do the following downcast, and that we have the | |
7322 | data we need. */ | |
7323 | gdb_assert (this_cu->is_debug_types && this_cu->reading_dwo_directly); | |
7324 | sig_type = (struct signatured_type *) this_cu; | |
7325 | gdb_assert (sig_type->dwo_unit != NULL); | |
7326 | ||
6aa5f3a6 DE |
7327 | if (use_existing_cu && this_cu->cu != NULL) |
7328 | { | |
7329 | gdb_assert (this_cu->cu->dwo_unit == sig_type->dwo_unit); | |
6aa5f3a6 DE |
7330 | /* There's no need to do the rereading_dwo_cu handling that |
7331 | init_cutu_and_read_dies does since we don't read the stub. */ | |
7332 | } | |
7333 | else | |
7334 | { | |
7335 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
7336 | gdb_assert (this_cu->cu == NULL); | |
fcd3b13d | 7337 | new_cu.reset (new dwarf2_cu (this_cu)); |
6aa5f3a6 DE |
7338 | } |
7339 | ||
7340 | /* A future optimization, if needed, would be to use an existing | |
7341 | abbrev table. When reading DWOs with skeletonless TUs, all the TUs | |
7342 | could share abbrev tables. */ | |
a2ce51a0 | 7343 | |
685af9cd TT |
7344 | /* The abbreviation table used by READER, this must live at least as long as |
7345 | READER. */ | |
7346 | abbrev_table_up dwo_abbrev_table; | |
7347 | ||
a2ce51a0 | 7348 | if (read_cutu_die_from_dwo (this_cu, sig_type->dwo_unit, |
a2ce51a0 DE |
7349 | NULL /* stub_comp_unit_die */, |
7350 | sig_type->dwo_unit->dwo_file->comp_dir, | |
7351 | &reader, &info_ptr, | |
685af9cd TT |
7352 | &comp_unit_die, &has_children, |
7353 | &dwo_abbrev_table) == 0) | |
a2ce51a0 DE |
7354 | { |
7355 | /* Dummy die. */ | |
a2ce51a0 DE |
7356 | return; |
7357 | } | |
7358 | ||
7359 | /* All the "real" work is done here. */ | |
7360 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
7361 | ||
6aa5f3a6 | 7362 | /* This duplicates the code in init_cutu_and_read_dies, |
a2ce51a0 DE |
7363 | but the alternative is making the latter more complex. |
7364 | This function is only for the special case of using DWO files directly: | |
7365 | no point in overly complicating the general case just to handle this. */ | |
fcd3b13d | 7366 | if (new_cu != NULL && keep) |
a2ce51a0 | 7367 | { |
fcd3b13d SM |
7368 | /* Link this CU into read_in_chain. */ |
7369 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
7370 | dwarf2_per_objfile->read_in_chain = this_cu; | |
7371 | /* The chain owns it now. */ | |
7372 | new_cu.release (); | |
a2ce51a0 | 7373 | } |
a2ce51a0 DE |
7374 | } |
7375 | ||
fd820528 | 7376 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 7377 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 7378 | |
f4dc4d17 DE |
7379 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
7380 | Otherwise the table specified in the comp unit header is read in and used. | |
7381 | This is an optimization for when we already have the abbrev table. | |
7382 | ||
dee91e82 DE |
7383 | If USE_EXISTING_CU is non-zero, and THIS_CU->cu is non-NULL, then use it. |
7384 | Otherwise, a new CU is allocated with xmalloc. | |
7385 | ||
7386 | If KEEP is non-zero, then if we allocated a dwarf2_cu we add it to | |
7387 | read_in_chain. Otherwise the dwarf2_cu data is freed at the end. | |
7388 | ||
7389 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
fd820528 | 7390 | linker) then DIE_READER_FUNC will not get called. */ |
aaa75496 | 7391 | |
70221824 | 7392 | static void |
fd820528 | 7393 | init_cutu_and_read_dies (struct dwarf2_per_cu_data *this_cu, |
f4dc4d17 | 7394 | struct abbrev_table *abbrev_table, |
fd820528 | 7395 | int use_existing_cu, int keep, |
58f0c718 | 7396 | bool skip_partial, |
fd820528 DE |
7397 | die_reader_func_ftype *die_reader_func, |
7398 | void *data) | |
c906108c | 7399 | { |
ed2dc618 | 7400 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
dee91e82 | 7401 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 7402 | struct dwarf2_section_info *section = this_cu->section; |
a32a8923 | 7403 | bfd *abfd = get_section_bfd_owner (section); |
dee91e82 | 7404 | struct dwarf2_cu *cu; |
d521ce57 | 7405 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 7406 | struct die_reader_specs reader; |
d85a05f0 | 7407 | struct die_info *comp_unit_die; |
dee91e82 | 7408 | int has_children; |
d85a05f0 | 7409 | struct attribute *attr; |
dee91e82 | 7410 | struct signatured_type *sig_type = NULL; |
4bdcc0c1 | 7411 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
7412 | /* Non-zero if CU currently points to a DWO file and we need to |
7413 | reread it. When this happens we need to reread the skeleton die | |
a2ce51a0 | 7414 | before we can reread the DWO file (this only applies to CUs, not TUs). */ |
42e7ad6c | 7415 | int rereading_dwo_cu = 0; |
c906108c | 7416 | |
b4f54984 | 7417 | if (dwarf_die_debug) |
9d8780f0 | 7418 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7419 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7420 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7421 | |
dee91e82 DE |
7422 | if (use_existing_cu) |
7423 | gdb_assert (keep); | |
23745b47 | 7424 | |
a2ce51a0 DE |
7425 | /* If we're reading a TU directly from a DWO file, including a virtual DWO |
7426 | file (instead of going through the stub), short-circuit all of this. */ | |
7427 | if (this_cu->reading_dwo_directly) | |
7428 | { | |
7429 | /* Narrow down the scope of possibilities to have to understand. */ | |
7430 | gdb_assert (this_cu->is_debug_types); | |
7431 | gdb_assert (abbrev_table == NULL); | |
6aa5f3a6 DE |
7432 | init_tu_and_read_dwo_dies (this_cu, use_existing_cu, keep, |
7433 | die_reader_func, data); | |
a2ce51a0 DE |
7434 | return; |
7435 | } | |
7436 | ||
dee91e82 DE |
7437 | /* This is cheap if the section is already read in. */ |
7438 | dwarf2_read_section (objfile, section); | |
7439 | ||
9c541725 | 7440 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
36586728 TT |
7441 | |
7442 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 | 7443 | |
fcd3b13d | 7444 | std::unique_ptr<dwarf2_cu> new_cu; |
dee91e82 DE |
7445 | if (use_existing_cu && this_cu->cu != NULL) |
7446 | { | |
7447 | cu = this_cu->cu; | |
42e7ad6c DE |
7448 | /* If this CU is from a DWO file we need to start over, we need to |
7449 | refetch the attributes from the skeleton CU. | |
7450 | This could be optimized by retrieving those attributes from when we | |
7451 | were here the first time: the previous comp_unit_die was stored in | |
7452 | comp_unit_obstack. But there's no data yet that we need this | |
7453 | optimization. */ | |
7454 | if (cu->dwo_unit != NULL) | |
7455 | rereading_dwo_cu = 1; | |
dee91e82 DE |
7456 | } |
7457 | else | |
7458 | { | |
7459 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
7460 | gdb_assert (this_cu->cu == NULL); | |
fcd3b13d SM |
7461 | new_cu.reset (new dwarf2_cu (this_cu)); |
7462 | cu = new_cu.get (); | |
42e7ad6c | 7463 | } |
dee91e82 | 7464 | |
b0c7bfa9 | 7465 | /* Get the header. */ |
9c541725 | 7466 | if (to_underlying (cu->header.first_die_cu_offset) != 0 && !rereading_dwo_cu) |
42e7ad6c DE |
7467 | { |
7468 | /* We already have the header, there's no need to read it in again. */ | |
9c541725 | 7469 | info_ptr += to_underlying (cu->header.first_die_cu_offset); |
42e7ad6c DE |
7470 | } |
7471 | else | |
7472 | { | |
3019eac3 | 7473 | if (this_cu->is_debug_types) |
dee91e82 | 7474 | { |
ed2dc618 SM |
7475 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7476 | &cu->header, section, | |
4bdcc0c1 | 7477 | abbrev_section, info_ptr, |
43988095 | 7478 | rcuh_kind::TYPE); |
dee91e82 | 7479 | |
42e7ad6c DE |
7480 | /* Since per_cu is the first member of struct signatured_type, |
7481 | we can go from a pointer to one to a pointer to the other. */ | |
7482 | sig_type = (struct signatured_type *) this_cu; | |
43988095 | 7483 | gdb_assert (sig_type->signature == cu->header.signature); |
9c541725 PA |
7484 | gdb_assert (sig_type->type_offset_in_tu |
7485 | == cu->header.type_cu_offset_in_tu); | |
7486 | gdb_assert (this_cu->sect_off == cu->header.sect_off); | |
dee91e82 | 7487 | |
42e7ad6c DE |
7488 | /* LENGTH has not been set yet for type units if we're |
7489 | using .gdb_index. */ | |
1ce1cefd | 7490 | this_cu->length = get_cu_length (&cu->header); |
3019eac3 DE |
7491 | |
7492 | /* Establish the type offset that can be used to lookup the type. */ | |
9c541725 PA |
7493 | sig_type->type_offset_in_section = |
7494 | this_cu->sect_off + to_underlying (sig_type->type_offset_in_tu); | |
43988095 JK |
7495 | |
7496 | this_cu->dwarf_version = cu->header.version; | |
dee91e82 DE |
7497 | } |
7498 | else | |
7499 | { | |
ed2dc618 SM |
7500 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7501 | &cu->header, section, | |
4bdcc0c1 | 7502 | abbrev_section, |
43988095 JK |
7503 | info_ptr, |
7504 | rcuh_kind::COMPILE); | |
dee91e82 | 7505 | |
9c541725 | 7506 | gdb_assert (this_cu->sect_off == cu->header.sect_off); |
1ce1cefd | 7507 | gdb_assert (this_cu->length == get_cu_length (&cu->header)); |
43988095 | 7508 | this_cu->dwarf_version = cu->header.version; |
dee91e82 DE |
7509 | } |
7510 | } | |
10b3939b | 7511 | |
6caca83c | 7512 | /* Skip dummy compilation units. */ |
dee91e82 | 7513 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c | 7514 | || peek_abbrev_code (abfd, info_ptr) == 0) |
fcd3b13d | 7515 | return; |
6caca83c | 7516 | |
433df2d4 DE |
7517 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
7518 | And if we need to read them now, make sure they're freed when we're | |
685af9cd TT |
7519 | done (own the table through ABBREV_TABLE_HOLDER). */ |
7520 | abbrev_table_up abbrev_table_holder; | |
f4dc4d17 | 7521 | if (abbrev_table != NULL) |
685af9cd TT |
7522 | gdb_assert (cu->header.abbrev_sect_off == abbrev_table->sect_off); |
7523 | else | |
f4dc4d17 | 7524 | { |
685af9cd TT |
7525 | abbrev_table_holder |
7526 | = abbrev_table_read_table (dwarf2_per_objfile, abbrev_section, | |
7527 | cu->header.abbrev_sect_off); | |
7528 | abbrev_table = abbrev_table_holder.get (); | |
42e7ad6c | 7529 | } |
af703f96 | 7530 | |
dee91e82 | 7531 | /* Read the top level CU/TU die. */ |
685af9cd | 7532 | init_cu_die_reader (&reader, cu, section, NULL, abbrev_table); |
dee91e82 | 7533 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
93311388 | 7534 | |
58f0c718 TT |
7535 | if (skip_partial && comp_unit_die->tag == DW_TAG_partial_unit) |
7536 | return; | |
7537 | ||
b0c7bfa9 | 7538 | /* If we are in a DWO stub, process it and then read in the "real" CU/TU |
685af9cd TT |
7539 | from the DWO file. read_cutu_die_from_dwo will allocate the abbreviation |
7540 | table from the DWO file and pass the ownership over to us. It will be | |
7541 | referenced from READER, so we must make sure to free it after we're done | |
7542 | with READER. | |
7543 | ||
b0c7bfa9 DE |
7544 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains a |
7545 | DWO CU, that this test will fail (the attribute will not be present). */ | |
3019eac3 | 7546 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); |
685af9cd | 7547 | abbrev_table_up dwo_abbrev_table; |
3019eac3 DE |
7548 | if (attr) |
7549 | { | |
3019eac3 | 7550 | struct dwo_unit *dwo_unit; |
b0c7bfa9 | 7551 | struct die_info *dwo_comp_unit_die; |
3019eac3 DE |
7552 | |
7553 | if (has_children) | |
6a506a2d | 7554 | { |
b98664d3 | 7555 | complaint (_("compilation unit with DW_AT_GNU_dwo_name" |
9d8780f0 SM |
7556 | " has children (offset %s) [in module %s]"), |
7557 | sect_offset_str (this_cu->sect_off), | |
7558 | bfd_get_filename (abfd)); | |
6a506a2d | 7559 | } |
b0c7bfa9 | 7560 | dwo_unit = lookup_dwo_unit (this_cu, comp_unit_die); |
6a506a2d | 7561 | if (dwo_unit != NULL) |
3019eac3 | 7562 | { |
6a506a2d | 7563 | if (read_cutu_die_from_dwo (this_cu, dwo_unit, |
a2ce51a0 | 7564 | comp_unit_die, NULL, |
6a506a2d | 7565 | &reader, &info_ptr, |
685af9cd TT |
7566 | &dwo_comp_unit_die, &has_children, |
7567 | &dwo_abbrev_table) == 0) | |
6a506a2d DE |
7568 | { |
7569 | /* Dummy die. */ | |
6a506a2d DE |
7570 | return; |
7571 | } | |
7572 | comp_unit_die = dwo_comp_unit_die; | |
7573 | } | |
7574 | else | |
7575 | { | |
7576 | /* Yikes, we couldn't find the rest of the DIE, we only have | |
7577 | the stub. A complaint has already been logged. There's | |
7578 | not much more we can do except pass on the stub DIE to | |
7579 | die_reader_func. We don't want to throw an error on bad | |
7580 | debug info. */ | |
3019eac3 DE |
7581 | } |
7582 | } | |
7583 | ||
b0c7bfa9 | 7584 | /* All of the above is setup for this call. Yikes. */ |
dee91e82 DE |
7585 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); |
7586 | ||
b0c7bfa9 | 7587 | /* Done, clean up. */ |
fcd3b13d | 7588 | if (new_cu != NULL && keep) |
348e048f | 7589 | { |
fcd3b13d SM |
7590 | /* Link this CU into read_in_chain. */ |
7591 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
7592 | dwarf2_per_objfile->read_in_chain = this_cu; | |
7593 | /* The chain owns it now. */ | |
7594 | new_cu.release (); | |
348e048f | 7595 | } |
dee91e82 DE |
7596 | } |
7597 | ||
33e80786 DE |
7598 | /* Read CU/TU THIS_CU but do not follow DW_AT_GNU_dwo_name if present. |
7599 | DWO_FILE, if non-NULL, is the DWO file to read (the caller is assumed | |
7600 | to have already done the lookup to find the DWO file). | |
dee91e82 DE |
7601 | |
7602 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 7603 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
7604 | |
7605 | We fill in THIS_CU->length. | |
7606 | ||
7607 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
7608 | linker) then DIE_READER_FUNC will not get called. | |
7609 | ||
7610 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
7611 | This is done in order to not leave THIS_CU->cu in a state where we have |
7612 | to care whether it refers to the "main" CU or the DWO CU. */ | |
dee91e82 DE |
7613 | |
7614 | static void | |
7615 | init_cutu_and_read_dies_no_follow (struct dwarf2_per_cu_data *this_cu, | |
3019eac3 | 7616 | struct dwo_file *dwo_file, |
dee91e82 DE |
7617 | die_reader_func_ftype *die_reader_func, |
7618 | void *data) | |
7619 | { | |
ed2dc618 | 7620 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
dee91e82 | 7621 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 7622 | struct dwarf2_section_info *section = this_cu->section; |
a32a8923 | 7623 | bfd *abfd = get_section_bfd_owner (section); |
33e80786 | 7624 | struct dwarf2_section_info *abbrev_section; |
d521ce57 | 7625 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 7626 | struct die_reader_specs reader; |
dee91e82 DE |
7627 | struct die_info *comp_unit_die; |
7628 | int has_children; | |
7629 | ||
b4f54984 | 7630 | if (dwarf_die_debug) |
9d8780f0 | 7631 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7632 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7633 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7634 | |
dee91e82 DE |
7635 | gdb_assert (this_cu->cu == NULL); |
7636 | ||
33e80786 DE |
7637 | abbrev_section = (dwo_file != NULL |
7638 | ? &dwo_file->sections.abbrev | |
7639 | : get_abbrev_section_for_cu (this_cu)); | |
7640 | ||
dee91e82 DE |
7641 | /* This is cheap if the section is already read in. */ |
7642 | dwarf2_read_section (objfile, section); | |
7643 | ||
fcd3b13d | 7644 | struct dwarf2_cu cu (this_cu); |
dee91e82 | 7645 | |
9c541725 | 7646 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
ed2dc618 SM |
7647 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7648 | &cu.header, section, | |
4bdcc0c1 | 7649 | abbrev_section, info_ptr, |
43988095 JK |
7650 | (this_cu->is_debug_types |
7651 | ? rcuh_kind::TYPE | |
7652 | : rcuh_kind::COMPILE)); | |
dee91e82 | 7653 | |
1ce1cefd | 7654 | this_cu->length = get_cu_length (&cu.header); |
dee91e82 DE |
7655 | |
7656 | /* Skip dummy compilation units. */ | |
7657 | if (info_ptr >= begin_info_ptr + this_cu->length | |
7658 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
fcd3b13d | 7659 | return; |
72bf9492 | 7660 | |
685af9cd TT |
7661 | abbrev_table_up abbrev_table |
7662 | = abbrev_table_read_table (dwarf2_per_objfile, abbrev_section, | |
7663 | cu.header.abbrev_sect_off); | |
dee91e82 | 7664 | |
685af9cd | 7665 | init_cu_die_reader (&reader, &cu, section, dwo_file, abbrev_table.get ()); |
dee91e82 DE |
7666 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
7667 | ||
7668 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
dee91e82 DE |
7669 | } |
7670 | ||
3019eac3 DE |
7671 | /* Read a CU/TU, except that this does not look for DW_AT_GNU_dwo_name and |
7672 | does not lookup the specified DWO file. | |
7673 | This cannot be used to read DWO files. | |
dee91e82 DE |
7674 | |
7675 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
7676 | This is done in order to not leave THIS_CU->cu in a state where we have |
7677 | to care whether it refers to the "main" CU or the DWO CU. | |
7678 | We can revisit this if the data shows there's a performance issue. */ | |
dee91e82 DE |
7679 | |
7680 | static void | |
7681 | init_cutu_and_read_dies_simple (struct dwarf2_per_cu_data *this_cu, | |
7682 | die_reader_func_ftype *die_reader_func, | |
7683 | void *data) | |
7684 | { | |
33e80786 | 7685 | init_cutu_and_read_dies_no_follow (this_cu, NULL, die_reader_func, data); |
dee91e82 | 7686 | } |
0018ea6f DE |
7687 | \f |
7688 | /* Type Unit Groups. | |
dee91e82 | 7689 | |
0018ea6f DE |
7690 | Type Unit Groups are a way to collapse the set of all TUs (type units) into |
7691 | a more manageable set. The grouping is done by DW_AT_stmt_list entry | |
7692 | so that all types coming from the same compilation (.o file) are grouped | |
7693 | together. A future step could be to put the types in the same symtab as | |
7694 | the CU the types ultimately came from. */ | |
ff013f42 | 7695 | |
f4dc4d17 DE |
7696 | static hashval_t |
7697 | hash_type_unit_group (const void *item) | |
7698 | { | |
9a3c8263 SM |
7699 | const struct type_unit_group *tu_group |
7700 | = (const struct type_unit_group *) item; | |
f4dc4d17 | 7701 | |
094b34ac | 7702 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 7703 | } |
348e048f DE |
7704 | |
7705 | static int | |
f4dc4d17 | 7706 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 7707 | { |
9a3c8263 SM |
7708 | const struct type_unit_group *lhs = (const struct type_unit_group *) item_lhs; |
7709 | const struct type_unit_group *rhs = (const struct type_unit_group *) item_rhs; | |
348e048f | 7710 | |
094b34ac | 7711 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 7712 | } |
348e048f | 7713 | |
f4dc4d17 DE |
7714 | /* Allocate a hash table for type unit groups. */ |
7715 | ||
7716 | static htab_t | |
ed2dc618 | 7717 | allocate_type_unit_groups_table (struct objfile *objfile) |
f4dc4d17 DE |
7718 | { |
7719 | return htab_create_alloc_ex (3, | |
7720 | hash_type_unit_group, | |
7721 | eq_type_unit_group, | |
7722 | NULL, | |
ed2dc618 | 7723 | &objfile->objfile_obstack, |
f4dc4d17 DE |
7724 | hashtab_obstack_allocate, |
7725 | dummy_obstack_deallocate); | |
7726 | } | |
dee91e82 | 7727 | |
f4dc4d17 DE |
7728 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
7729 | partial symtabs. We combine several TUs per psymtab to not let the size | |
7730 | of any one psymtab grow too big. */ | |
7731 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
7732 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 7733 | |
094b34ac | 7734 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
7735 | Create the type_unit_group object used to hold one or more TUs. */ |
7736 | ||
7737 | static struct type_unit_group * | |
094b34ac | 7738 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 | 7739 | { |
518817b3 SM |
7740 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7741 | = cu->per_cu->dwarf2_per_objfile; | |
f4dc4d17 | 7742 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
094b34ac | 7743 | struct dwarf2_per_cu_data *per_cu; |
f4dc4d17 | 7744 | struct type_unit_group *tu_group; |
f4dc4d17 DE |
7745 | |
7746 | tu_group = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7747 | struct type_unit_group); | |
094b34ac | 7748 | per_cu = &tu_group->per_cu; |
518817b3 | 7749 | per_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
f4dc4d17 | 7750 | |
094b34ac DE |
7751 | if (dwarf2_per_objfile->using_index) |
7752 | { | |
7753 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7754 | struct dwarf2_per_cu_quick_data); | |
094b34ac DE |
7755 | } |
7756 | else | |
7757 | { | |
9c541725 | 7758 | unsigned int line_offset = to_underlying (line_offset_struct); |
094b34ac DE |
7759 | struct partial_symtab *pst; |
7760 | char *name; | |
7761 | ||
7762 | /* Give the symtab a useful name for debug purposes. */ | |
7763 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
7764 | name = xstrprintf ("<type_units_%d>", | |
7765 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
7766 | else | |
7767 | name = xstrprintf ("<type_units_at_0x%x>", line_offset); | |
7768 | ||
7769 | pst = create_partial_symtab (per_cu, name); | |
7770 | pst->anonymous = 1; | |
f4dc4d17 | 7771 | |
094b34ac DE |
7772 | xfree (name); |
7773 | } | |
f4dc4d17 | 7774 | |
094b34ac | 7775 | tu_group->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7776 | tu_group->hash.line_sect_off = line_offset_struct; |
f4dc4d17 DE |
7777 | |
7778 | return tu_group; | |
7779 | } | |
7780 | ||
094b34ac DE |
7781 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
7782 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
7783 | |
7784 | static struct type_unit_group * | |
ff39bb5e | 7785 | get_type_unit_group (struct dwarf2_cu *cu, const struct attribute *stmt_list) |
f4dc4d17 | 7786 | { |
518817b3 SM |
7787 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7788 | = cu->per_cu->dwarf2_per_objfile; | |
f4dc4d17 DE |
7789 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; |
7790 | struct type_unit_group *tu_group; | |
7791 | void **slot; | |
7792 | unsigned int line_offset; | |
7793 | struct type_unit_group type_unit_group_for_lookup; | |
7794 | ||
7795 | if (dwarf2_per_objfile->type_unit_groups == NULL) | |
7796 | { | |
7797 | dwarf2_per_objfile->type_unit_groups = | |
ed2dc618 | 7798 | allocate_type_unit_groups_table (dwarf2_per_objfile->objfile); |
f4dc4d17 DE |
7799 | } |
7800 | ||
7801 | /* Do we need to create a new group, or can we use an existing one? */ | |
7802 | ||
7803 | if (stmt_list) | |
7804 | { | |
7805 | line_offset = DW_UNSND (stmt_list); | |
7806 | ++tu_stats->nr_symtab_sharers; | |
7807 | } | |
7808 | else | |
7809 | { | |
7810 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
7811 | We can do various things here like create one group per TU or | |
7812 | spread them over multiple groups to split up the expansion work. | |
7813 | To avoid worst case scenarios (too many groups or too large groups) | |
7814 | we, umm, group them in bunches. */ | |
7815 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
7816 | | (tu_stats->nr_stmt_less_type_units | |
7817 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
7818 | ++tu_stats->nr_stmt_less_type_units; | |
7819 | } | |
7820 | ||
094b34ac | 7821 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7822 | type_unit_group_for_lookup.hash.line_sect_off = (sect_offset) line_offset; |
f4dc4d17 DE |
7823 | slot = htab_find_slot (dwarf2_per_objfile->type_unit_groups, |
7824 | &type_unit_group_for_lookup, INSERT); | |
7825 | if (*slot != NULL) | |
7826 | { | |
9a3c8263 | 7827 | tu_group = (struct type_unit_group *) *slot; |
f4dc4d17 DE |
7828 | gdb_assert (tu_group != NULL); |
7829 | } | |
7830 | else | |
7831 | { | |
9c541725 | 7832 | sect_offset line_offset_struct = (sect_offset) line_offset; |
094b34ac | 7833 | tu_group = create_type_unit_group (cu, line_offset_struct); |
f4dc4d17 DE |
7834 | *slot = tu_group; |
7835 | ++tu_stats->nr_symtabs; | |
7836 | } | |
7837 | ||
7838 | return tu_group; | |
7839 | } | |
0018ea6f DE |
7840 | \f |
7841 | /* Partial symbol tables. */ | |
7842 | ||
7843 | /* Create a psymtab named NAME and assign it to PER_CU. | |
7844 | ||
7845 | The caller must fill in the following details: | |
7846 | dirname, textlow, texthigh. */ | |
7847 | ||
7848 | static struct partial_symtab * | |
7849 | create_partial_symtab (struct dwarf2_per_cu_data *per_cu, const char *name) | |
7850 | { | |
e3b94546 | 7851 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
0018ea6f DE |
7852 | struct partial_symtab *pst; |
7853 | ||
18a94d75 | 7854 | pst = start_psymtab_common (objfile, name, 0, |
af5bf4ad SM |
7855 | objfile->global_psymbols, |
7856 | objfile->static_psymbols); | |
0018ea6f DE |
7857 | |
7858 | pst->psymtabs_addrmap_supported = 1; | |
7859 | ||
7860 | /* This is the glue that links PST into GDB's symbol API. */ | |
7861 | pst->read_symtab_private = per_cu; | |
7862 | pst->read_symtab = dwarf2_read_symtab; | |
7863 | per_cu->v.psymtab = pst; | |
7864 | ||
7865 | return pst; | |
7866 | } | |
7867 | ||
b93601f3 TT |
7868 | /* The DATA object passed to process_psymtab_comp_unit_reader has this |
7869 | type. */ | |
7870 | ||
7871 | struct process_psymtab_comp_unit_data | |
7872 | { | |
7873 | /* True if we are reading a DW_TAG_partial_unit. */ | |
7874 | ||
7875 | int want_partial_unit; | |
7876 | ||
7877 | /* The "pretend" language that is used if the CU doesn't declare a | |
7878 | language. */ | |
7879 | ||
7880 | enum language pretend_language; | |
7881 | }; | |
7882 | ||
0018ea6f DE |
7883 | /* die_reader_func for process_psymtab_comp_unit. */ |
7884 | ||
7885 | static void | |
7886 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7887 | const gdb_byte *info_ptr, |
0018ea6f DE |
7888 | struct die_info *comp_unit_die, |
7889 | int has_children, | |
7890 | void *data) | |
7891 | { | |
7892 | struct dwarf2_cu *cu = reader->cu; | |
518817b3 | 7893 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 7894 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
0018ea6f | 7895 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
0018ea6f DE |
7896 | CORE_ADDR baseaddr; |
7897 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
7898 | struct partial_symtab *pst; | |
3a2b436a | 7899 | enum pc_bounds_kind cu_bounds_kind; |
0018ea6f | 7900 | const char *filename; |
9a3c8263 SM |
7901 | struct process_psymtab_comp_unit_data *info |
7902 | = (struct process_psymtab_comp_unit_data *) data; | |
0018ea6f | 7903 | |
b93601f3 | 7904 | if (comp_unit_die->tag == DW_TAG_partial_unit && !info->want_partial_unit) |
0018ea6f DE |
7905 | return; |
7906 | ||
7907 | gdb_assert (! per_cu->is_debug_types); | |
7908 | ||
b93601f3 | 7909 | prepare_one_comp_unit (cu, comp_unit_die, info->pretend_language); |
0018ea6f DE |
7910 | |
7911 | cu->list_in_scope = &file_symbols; | |
7912 | ||
7913 | /* Allocate a new partial symbol table structure. */ | |
7d45c7c3 KB |
7914 | filename = dwarf2_string_attr (comp_unit_die, DW_AT_name, cu); |
7915 | if (filename == NULL) | |
0018ea6f | 7916 | filename = ""; |
0018ea6f DE |
7917 | |
7918 | pst = create_partial_symtab (per_cu, filename); | |
7919 | ||
7920 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
7d45c7c3 | 7921 | pst->dirname = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
0018ea6f DE |
7922 | |
7923 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
7924 | ||
7925 | dwarf2_find_base_address (comp_unit_die, cu); | |
7926 | ||
7927 | /* Possibly set the default values of LOWPC and HIGHPC from | |
7928 | `DW_AT_ranges'. */ | |
3a2b436a JK |
7929 | cu_bounds_kind = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
7930 | &best_highpc, cu, pst); | |
7931 | if (cu_bounds_kind == PC_BOUNDS_HIGH_LOW && best_lowpc < best_highpc) | |
0018ea6f DE |
7932 | /* Store the contiguous range if it is not empty; it can be empty for |
7933 | CUs with no code. */ | |
7934 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
3e29f34a MR |
7935 | gdbarch_adjust_dwarf2_addr (gdbarch, |
7936 | best_lowpc + baseaddr), | |
7937 | gdbarch_adjust_dwarf2_addr (gdbarch, | |
7938 | best_highpc + baseaddr) - 1, | |
7939 | pst); | |
0018ea6f DE |
7940 | |
7941 | /* Check if comp unit has_children. | |
7942 | If so, read the rest of the partial symbols from this comp unit. | |
7943 | If not, there's no more debug_info for this comp unit. */ | |
7944 | if (has_children) | |
7945 | { | |
7946 | struct partial_die_info *first_die; | |
7947 | CORE_ADDR lowpc, highpc; | |
7948 | ||
7949 | lowpc = ((CORE_ADDR) -1); | |
7950 | highpc = ((CORE_ADDR) 0); | |
7951 | ||
7952 | first_die = load_partial_dies (reader, info_ptr, 1); | |
7953 | ||
7954 | scan_partial_symbols (first_die, &lowpc, &highpc, | |
e385593e | 7955 | cu_bounds_kind <= PC_BOUNDS_INVALID, cu); |
0018ea6f DE |
7956 | |
7957 | /* If we didn't find a lowpc, set it to highpc to avoid | |
7958 | complaints from `maint check'. */ | |
7959 | if (lowpc == ((CORE_ADDR) -1)) | |
7960 | lowpc = highpc; | |
7961 | ||
7962 | /* If the compilation unit didn't have an explicit address range, | |
7963 | then use the information extracted from its child dies. */ | |
e385593e | 7964 | if (cu_bounds_kind <= PC_BOUNDS_INVALID) |
0018ea6f DE |
7965 | { |
7966 | best_lowpc = lowpc; | |
7967 | best_highpc = highpc; | |
7968 | } | |
7969 | } | |
3e29f34a MR |
7970 | pst->textlow = gdbarch_adjust_dwarf2_addr (gdbarch, best_lowpc + baseaddr); |
7971 | pst->texthigh = gdbarch_adjust_dwarf2_addr (gdbarch, best_highpc + baseaddr); | |
0018ea6f | 7972 | |
8763cede | 7973 | end_psymtab_common (objfile, pst); |
0018ea6f DE |
7974 | |
7975 | if (!VEC_empty (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs)) | |
7976 | { | |
7977 | int i; | |
7978 | int len = VEC_length (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
7979 | struct dwarf2_per_cu_data *iter; | |
7980 | ||
7981 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
7982 | post-pass. */ | |
7983 | pst->number_of_dependencies = len; | |
8d749320 SM |
7984 | pst->dependencies = |
7985 | XOBNEWVEC (&objfile->objfile_obstack, struct partial_symtab *, len); | |
0018ea6f DE |
7986 | for (i = 0; |
7987 | VEC_iterate (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, | |
7988 | i, iter); | |
7989 | ++i) | |
7990 | pst->dependencies[i] = iter->v.psymtab; | |
7991 | ||
7992 | VEC_free (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
7993 | } | |
7994 | ||
7995 | /* Get the list of files included in the current compilation unit, | |
7996 | and build a psymtab for each of them. */ | |
7997 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
7998 | ||
b4f54984 | 7999 | if (dwarf_read_debug) |
0018ea6f DE |
8000 | { |
8001 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
8002 | ||
8003 | fprintf_unfiltered (gdb_stdlog, | |
9d8780f0 | 8004 | "Psymtab for %s unit @%s: %s - %s" |
0018ea6f DE |
8005 | ", %d global, %d static syms\n", |
8006 | per_cu->is_debug_types ? "type" : "comp", | |
9d8780f0 | 8007 | sect_offset_str (per_cu->sect_off), |
0018ea6f DE |
8008 | paddress (gdbarch, pst->textlow), |
8009 | paddress (gdbarch, pst->texthigh), | |
8010 | pst->n_global_syms, pst->n_static_syms); | |
8011 | } | |
8012 | } | |
8013 | ||
8014 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
8015 | Process compilation unit THIS_CU for a psymtab. */ | |
8016 | ||
8017 | static void | |
8018 | process_psymtab_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
b93601f3 TT |
8019 | int want_partial_unit, |
8020 | enum language pretend_language) | |
0018ea6f DE |
8021 | { |
8022 | /* If this compilation unit was already read in, free the | |
8023 | cached copy in order to read it in again. This is | |
8024 | necessary because we skipped some symbols when we first | |
8025 | read in the compilation unit (see load_partial_dies). | |
8026 | This problem could be avoided, but the benefit is unclear. */ | |
8027 | if (this_cu->cu != NULL) | |
8028 | free_one_cached_comp_unit (this_cu); | |
8029 | ||
f1902523 | 8030 | if (this_cu->is_debug_types) |
58f0c718 TT |
8031 | init_cutu_and_read_dies (this_cu, NULL, 0, 0, false, |
8032 | build_type_psymtabs_reader, NULL); | |
f1902523 JK |
8033 | else |
8034 | { | |
8035 | process_psymtab_comp_unit_data info; | |
8036 | info.want_partial_unit = want_partial_unit; | |
8037 | info.pretend_language = pretend_language; | |
58f0c718 | 8038 | init_cutu_and_read_dies (this_cu, NULL, 0, 0, false, |
f1902523 JK |
8039 | process_psymtab_comp_unit_reader, &info); |
8040 | } | |
0018ea6f DE |
8041 | |
8042 | /* Age out any secondary CUs. */ | |
ed2dc618 | 8043 | age_cached_comp_units (this_cu->dwarf2_per_objfile); |
0018ea6f | 8044 | } |
f4dc4d17 DE |
8045 | |
8046 | /* Reader function for build_type_psymtabs. */ | |
8047 | ||
8048 | static void | |
8049 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
d521ce57 | 8050 | const gdb_byte *info_ptr, |
f4dc4d17 DE |
8051 | struct die_info *type_unit_die, |
8052 | int has_children, | |
8053 | void *data) | |
8054 | { | |
ed2dc618 | 8055 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 8056 | = reader->cu->per_cu->dwarf2_per_objfile; |
f4dc4d17 DE |
8057 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8058 | struct dwarf2_cu *cu = reader->cu; | |
8059 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
0186c6a7 | 8060 | struct signatured_type *sig_type; |
f4dc4d17 DE |
8061 | struct type_unit_group *tu_group; |
8062 | struct attribute *attr; | |
8063 | struct partial_die_info *first_die; | |
8064 | CORE_ADDR lowpc, highpc; | |
8065 | struct partial_symtab *pst; | |
8066 | ||
8067 | gdb_assert (data == NULL); | |
0186c6a7 DE |
8068 | gdb_assert (per_cu->is_debug_types); |
8069 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 DE |
8070 | |
8071 | if (! has_children) | |
8072 | return; | |
8073 | ||
8074 | attr = dwarf2_attr_no_follow (type_unit_die, DW_AT_stmt_list); | |
094b34ac | 8075 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 8076 | |
0186c6a7 | 8077 | VEC_safe_push (sig_type_ptr, tu_group->tus, sig_type); |
f4dc4d17 DE |
8078 | |
8079 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
8080 | cu->list_in_scope = &file_symbols; | |
8081 | pst = create_partial_symtab (per_cu, ""); | |
8082 | pst->anonymous = 1; | |
8083 | ||
8084 | first_die = load_partial_dies (reader, info_ptr, 1); | |
8085 | ||
8086 | lowpc = (CORE_ADDR) -1; | |
8087 | highpc = (CORE_ADDR) 0; | |
8088 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
8089 | ||
8763cede | 8090 | end_psymtab_common (objfile, pst); |
f4dc4d17 DE |
8091 | } |
8092 | ||
73051182 DE |
8093 | /* Struct used to sort TUs by their abbreviation table offset. */ |
8094 | ||
8095 | struct tu_abbrev_offset | |
8096 | { | |
b2bdb8cf SM |
8097 | tu_abbrev_offset (signatured_type *sig_type_, sect_offset abbrev_offset_) |
8098 | : sig_type (sig_type_), abbrev_offset (abbrev_offset_) | |
8099 | {} | |
8100 | ||
8101 | signatured_type *sig_type; | |
73051182 DE |
8102 | sect_offset abbrev_offset; |
8103 | }; | |
8104 | ||
484cf504 | 8105 | /* Helper routine for build_type_psymtabs_1, passed to std::sort. */ |
73051182 | 8106 | |
484cf504 TT |
8107 | static bool |
8108 | sort_tu_by_abbrev_offset (const struct tu_abbrev_offset &a, | |
8109 | const struct tu_abbrev_offset &b) | |
73051182 | 8110 | { |
484cf504 | 8111 | return a.abbrev_offset < b.abbrev_offset; |
73051182 DE |
8112 | } |
8113 | ||
8114 | /* Efficiently read all the type units. | |
8115 | This does the bulk of the work for build_type_psymtabs. | |
8116 | ||
8117 | The efficiency is because we sort TUs by the abbrev table they use and | |
8118 | only read each abbrev table once. In one program there are 200K TUs | |
8119 | sharing 8K abbrev tables. | |
8120 | ||
8121 | The main purpose of this function is to support building the | |
8122 | dwarf2_per_objfile->type_unit_groups table. | |
8123 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we | |
8124 | can collapse the search space by grouping them by stmt_list. | |
8125 | The savings can be significant, in the same program from above the 200K TUs | |
8126 | share 8K stmt_list tables. | |
8127 | ||
8128 | FUNC is expected to call get_type_unit_group, which will create the | |
8129 | struct type_unit_group if necessary and add it to | |
8130 | dwarf2_per_objfile->type_unit_groups. */ | |
8131 | ||
8132 | static void | |
ed2dc618 | 8133 | build_type_psymtabs_1 (struct dwarf2_per_objfile *dwarf2_per_objfile) |
73051182 | 8134 | { |
73051182 | 8135 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; |
685af9cd | 8136 | abbrev_table_up abbrev_table; |
73051182 | 8137 | sect_offset abbrev_offset; |
73051182 DE |
8138 | |
8139 | /* It's up to the caller to not call us multiple times. */ | |
8140 | gdb_assert (dwarf2_per_objfile->type_unit_groups == NULL); | |
8141 | ||
b2bdb8cf | 8142 | if (dwarf2_per_objfile->all_type_units.empty ()) |
73051182 DE |
8143 | return; |
8144 | ||
8145 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
8146 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
8147 | read each abbrev table in. | |
8148 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
8149 | This is simpler and efficient enough for now. | |
8150 | ||
8151 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
8152 | symtab to use). Typically TUs with the same abbrev offset have the same | |
8153 | stmt_list value too so in practice this should work well. | |
8154 | ||
8155 | The basic algorithm here is: | |
8156 | ||
8157 | sort TUs by abbrev table | |
8158 | for each TU with same abbrev table: | |
8159 | read abbrev table if first user | |
8160 | read TU top level DIE | |
8161 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
8162 | call FUNC */ | |
8163 | ||
b4f54984 | 8164 | if (dwarf_read_debug) |
73051182 DE |
8165 | fprintf_unfiltered (gdb_stdlog, "Building type unit groups ...\n"); |
8166 | ||
8167 | /* Sort in a separate table to maintain the order of all_type_units | |
8168 | for .gdb_index: TU indices directly index all_type_units. */ | |
b2bdb8cf SM |
8169 | std::vector<tu_abbrev_offset> sorted_by_abbrev; |
8170 | sorted_by_abbrev.reserve (dwarf2_per_objfile->all_type_units.size ()); | |
8171 | ||
8172 | for (signatured_type *sig_type : dwarf2_per_objfile->all_type_units) | |
8173 | sorted_by_abbrev.emplace_back | |
8174 | (sig_type, read_abbrev_offset (dwarf2_per_objfile, | |
8175 | sig_type->per_cu.section, | |
8176 | sig_type->per_cu.sect_off)); | |
73051182 | 8177 | |
484cf504 TT |
8178 | std::sort (sorted_by_abbrev.begin (), sorted_by_abbrev.end (), |
8179 | sort_tu_by_abbrev_offset); | |
73051182 | 8180 | |
9c541725 | 8181 | abbrev_offset = (sect_offset) ~(unsigned) 0; |
73051182 | 8182 | |
b2bdb8cf | 8183 | for (const tu_abbrev_offset &tu : sorted_by_abbrev) |
73051182 | 8184 | { |
73051182 DE |
8185 | /* Switch to the next abbrev table if necessary. */ |
8186 | if (abbrev_table == NULL | |
b2bdb8cf | 8187 | || tu.abbrev_offset != abbrev_offset) |
73051182 | 8188 | { |
b2bdb8cf | 8189 | abbrev_offset = tu.abbrev_offset; |
73051182 | 8190 | abbrev_table = |
ed2dc618 SM |
8191 | abbrev_table_read_table (dwarf2_per_objfile, |
8192 | &dwarf2_per_objfile->abbrev, | |
73051182 DE |
8193 | abbrev_offset); |
8194 | ++tu_stats->nr_uniq_abbrev_tables; | |
8195 | } | |
8196 | ||
b2bdb8cf | 8197 | init_cutu_and_read_dies (&tu.sig_type->per_cu, abbrev_table.get (), |
58f0c718 | 8198 | 0, 0, false, build_type_psymtabs_reader, NULL); |
73051182 | 8199 | } |
6aa5f3a6 | 8200 | } |
73051182 | 8201 | |
6aa5f3a6 DE |
8202 | /* Print collected type unit statistics. */ |
8203 | ||
8204 | static void | |
ed2dc618 | 8205 | print_tu_stats (struct dwarf2_per_objfile *dwarf2_per_objfile) |
6aa5f3a6 DE |
8206 | { |
8207 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
8208 | ||
8209 | fprintf_unfiltered (gdb_stdlog, "Type unit statistics:\n"); | |
b2bdb8cf SM |
8210 | fprintf_unfiltered (gdb_stdlog, " %zu TUs\n", |
8211 | dwarf2_per_objfile->all_type_units.size ()); | |
6aa5f3a6 DE |
8212 | fprintf_unfiltered (gdb_stdlog, " %d uniq abbrev tables\n", |
8213 | tu_stats->nr_uniq_abbrev_tables); | |
8214 | fprintf_unfiltered (gdb_stdlog, " %d symtabs from stmt_list entries\n", | |
8215 | tu_stats->nr_symtabs); | |
8216 | fprintf_unfiltered (gdb_stdlog, " %d symtab sharers\n", | |
8217 | tu_stats->nr_symtab_sharers); | |
8218 | fprintf_unfiltered (gdb_stdlog, " %d type units without a stmt_list\n", | |
8219 | tu_stats->nr_stmt_less_type_units); | |
8220 | fprintf_unfiltered (gdb_stdlog, " %d all_type_units reallocs\n", | |
8221 | tu_stats->nr_all_type_units_reallocs); | |
73051182 DE |
8222 | } |
8223 | ||
f4dc4d17 DE |
8224 | /* Traversal function for build_type_psymtabs. */ |
8225 | ||
8226 | static int | |
8227 | build_type_psymtab_dependencies (void **slot, void *info) | |
8228 | { | |
ed2dc618 SM |
8229 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8230 | = (struct dwarf2_per_objfile *) info; | |
f4dc4d17 DE |
8231 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8232 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; | |
094b34ac | 8233 | struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu; |
f4dc4d17 | 8234 | struct partial_symtab *pst = per_cu->v.psymtab; |
0186c6a7 DE |
8235 | int len = VEC_length (sig_type_ptr, tu_group->tus); |
8236 | struct signatured_type *iter; | |
f4dc4d17 DE |
8237 | int i; |
8238 | ||
8239 | gdb_assert (len > 0); | |
0186c6a7 | 8240 | gdb_assert (IS_TYPE_UNIT_GROUP (per_cu)); |
f4dc4d17 DE |
8241 | |
8242 | pst->number_of_dependencies = len; | |
8d749320 SM |
8243 | pst->dependencies = |
8244 | XOBNEWVEC (&objfile->objfile_obstack, struct partial_symtab *, len); | |
f4dc4d17 | 8245 | for (i = 0; |
0186c6a7 | 8246 | VEC_iterate (sig_type_ptr, tu_group->tus, i, iter); |
f4dc4d17 DE |
8247 | ++i) |
8248 | { | |
0186c6a7 DE |
8249 | gdb_assert (iter->per_cu.is_debug_types); |
8250 | pst->dependencies[i] = iter->per_cu.v.psymtab; | |
796a7ff8 | 8251 | iter->type_unit_group = tu_group; |
f4dc4d17 DE |
8252 | } |
8253 | ||
0186c6a7 | 8254 | VEC_free (sig_type_ptr, tu_group->tus); |
348e048f DE |
8255 | |
8256 | return 1; | |
8257 | } | |
8258 | ||
8259 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
8260 | Build partial symbol tables for the .debug_types comp-units. */ | |
8261 | ||
8262 | static void | |
ed2dc618 | 8263 | build_type_psymtabs (struct dwarf2_per_objfile *dwarf2_per_objfile) |
348e048f | 8264 | { |
ed2dc618 | 8265 | if (! create_all_type_units (dwarf2_per_objfile)) |
348e048f DE |
8266 | return; |
8267 | ||
ed2dc618 | 8268 | build_type_psymtabs_1 (dwarf2_per_objfile); |
6aa5f3a6 | 8269 | } |
f4dc4d17 | 8270 | |
6aa5f3a6 DE |
8271 | /* Traversal function for process_skeletonless_type_unit. |
8272 | Read a TU in a DWO file and build partial symbols for it. */ | |
8273 | ||
8274 | static int | |
8275 | process_skeletonless_type_unit (void **slot, void *info) | |
8276 | { | |
8277 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
ed2dc618 SM |
8278 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8279 | = (struct dwarf2_per_objfile *) info; | |
6aa5f3a6 DE |
8280 | struct signatured_type find_entry, *entry; |
8281 | ||
8282 | /* If this TU doesn't exist in the global table, add it and read it in. */ | |
8283 | ||
8284 | if (dwarf2_per_objfile->signatured_types == NULL) | |
8285 | { | |
8286 | dwarf2_per_objfile->signatured_types | |
ed2dc618 | 8287 | = allocate_signatured_type_table (dwarf2_per_objfile->objfile); |
6aa5f3a6 DE |
8288 | } |
8289 | ||
8290 | find_entry.signature = dwo_unit->signature; | |
8291 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, &find_entry, | |
8292 | INSERT); | |
8293 | /* If we've already seen this type there's nothing to do. What's happening | |
8294 | is we're doing our own version of comdat-folding here. */ | |
8295 | if (*slot != NULL) | |
8296 | return 1; | |
8297 | ||
8298 | /* This does the job that create_all_type_units would have done for | |
8299 | this TU. */ | |
ed2dc618 SM |
8300 | entry = add_type_unit (dwarf2_per_objfile, dwo_unit->signature, slot); |
8301 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, entry, dwo_unit); | |
6aa5f3a6 DE |
8302 | *slot = entry; |
8303 | ||
8304 | /* This does the job that build_type_psymtabs_1 would have done. */ | |
58f0c718 | 8305 | init_cutu_and_read_dies (&entry->per_cu, NULL, 0, 0, false, |
6aa5f3a6 DE |
8306 | build_type_psymtabs_reader, NULL); |
8307 | ||
8308 | return 1; | |
8309 | } | |
8310 | ||
8311 | /* Traversal function for process_skeletonless_type_units. */ | |
8312 | ||
8313 | static int | |
8314 | process_dwo_file_for_skeletonless_type_units (void **slot, void *info) | |
8315 | { | |
8316 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
8317 | ||
8318 | if (dwo_file->tus != NULL) | |
8319 | { | |
8320 | htab_traverse_noresize (dwo_file->tus, | |
8321 | process_skeletonless_type_unit, info); | |
8322 | } | |
8323 | ||
8324 | return 1; | |
8325 | } | |
8326 | ||
8327 | /* Scan all TUs of DWO files, verifying we've processed them. | |
8328 | This is needed in case a TU was emitted without its skeleton. | |
8329 | Note: This can't be done until we know what all the DWO files are. */ | |
8330 | ||
8331 | static void | |
ed2dc618 | 8332 | process_skeletonless_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
6aa5f3a6 DE |
8333 | { |
8334 | /* Skeletonless TUs in DWP files without .gdb_index is not supported yet. */ | |
ed2dc618 | 8335 | if (get_dwp_file (dwarf2_per_objfile) == NULL |
6aa5f3a6 DE |
8336 | && dwarf2_per_objfile->dwo_files != NULL) |
8337 | { | |
8338 | htab_traverse_noresize (dwarf2_per_objfile->dwo_files, | |
8339 | process_dwo_file_for_skeletonless_type_units, | |
ed2dc618 | 8340 | dwarf2_per_objfile); |
6aa5f3a6 | 8341 | } |
348e048f DE |
8342 | } |
8343 | ||
ed2dc618 | 8344 | /* Compute the 'user' field for each psymtab in DWARF2_PER_OBJFILE. */ |
95554aad TT |
8345 | |
8346 | static void | |
ed2dc618 | 8347 | set_partial_user (struct dwarf2_per_objfile *dwarf2_per_objfile) |
95554aad | 8348 | { |
b76e467d | 8349 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
95554aad | 8350 | { |
95554aad | 8351 | struct partial_symtab *pst = per_cu->v.psymtab; |
95554aad | 8352 | |
36586728 TT |
8353 | if (pst == NULL) |
8354 | continue; | |
8355 | ||
b76e467d | 8356 | for (int j = 0; j < pst->number_of_dependencies; ++j) |
95554aad TT |
8357 | { |
8358 | /* Set the 'user' field only if it is not already set. */ | |
8359 | if (pst->dependencies[j]->user == NULL) | |
8360 | pst->dependencies[j]->user = pst; | |
8361 | } | |
8362 | } | |
8363 | } | |
8364 | ||
93311388 DE |
8365 | /* Build the partial symbol table by doing a quick pass through the |
8366 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 8367 | |
93311388 | 8368 | static void |
ed2dc618 | 8369 | dwarf2_build_psymtabs_hard (struct dwarf2_per_objfile *dwarf2_per_objfile) |
93311388 | 8370 | { |
ed2dc618 | 8371 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
93311388 | 8372 | |
b4f54984 | 8373 | if (dwarf_read_debug) |
45cfd468 DE |
8374 | { |
8375 | fprintf_unfiltered (gdb_stdlog, "Building psymtabs of objfile %s ...\n", | |
4262abfb | 8376 | objfile_name (objfile)); |
45cfd468 DE |
8377 | } |
8378 | ||
98bfdba5 PA |
8379 | dwarf2_per_objfile->reading_partial_symbols = 1; |
8380 | ||
be391dca | 8381 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
91c24f0a | 8382 | |
93311388 DE |
8383 | /* Any cached compilation units will be linked by the per-objfile |
8384 | read_in_chain. Make sure to free them when we're done. */ | |
11ed8cad | 8385 | free_cached_comp_units freer (dwarf2_per_objfile); |
72bf9492 | 8386 | |
ed2dc618 | 8387 | build_type_psymtabs (dwarf2_per_objfile); |
348e048f | 8388 | |
ed2dc618 | 8389 | create_all_comp_units (dwarf2_per_objfile); |
c906108c | 8390 | |
60606b2c TT |
8391 | /* Create a temporary address map on a temporary obstack. We later |
8392 | copy this to the final obstack. */ | |
8268c778 | 8393 | auto_obstack temp_obstack; |
791afaa2 TT |
8394 | |
8395 | scoped_restore save_psymtabs_addrmap | |
8396 | = make_scoped_restore (&objfile->psymtabs_addrmap, | |
8397 | addrmap_create_mutable (&temp_obstack)); | |
72bf9492 | 8398 | |
b76e467d SM |
8399 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
8400 | process_psymtab_comp_unit (per_cu, 0, language_minimal); | |
ff013f42 | 8401 | |
6aa5f3a6 | 8402 | /* This has to wait until we read the CUs, we need the list of DWOs. */ |
ed2dc618 | 8403 | process_skeletonless_type_units (dwarf2_per_objfile); |
6aa5f3a6 DE |
8404 | |
8405 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
8406 | if (dwarf2_per_objfile->type_unit_groups != NULL) | |
8407 | { | |
8408 | htab_traverse_noresize (dwarf2_per_objfile->type_unit_groups, | |
ed2dc618 | 8409 | build_type_psymtab_dependencies, dwarf2_per_objfile); |
6aa5f3a6 DE |
8410 | } |
8411 | ||
b4f54984 | 8412 | if (dwarf_read_debug) |
ed2dc618 | 8413 | print_tu_stats (dwarf2_per_objfile); |
6aa5f3a6 | 8414 | |
ed2dc618 | 8415 | set_partial_user (dwarf2_per_objfile); |
95554aad | 8416 | |
ff013f42 JK |
8417 | objfile->psymtabs_addrmap = addrmap_create_fixed (objfile->psymtabs_addrmap, |
8418 | &objfile->objfile_obstack); | |
791afaa2 TT |
8419 | /* At this point we want to keep the address map. */ |
8420 | save_psymtabs_addrmap.release (); | |
ff013f42 | 8421 | |
b4f54984 | 8422 | if (dwarf_read_debug) |
45cfd468 | 8423 | fprintf_unfiltered (gdb_stdlog, "Done building psymtabs of %s\n", |
4262abfb | 8424 | objfile_name (objfile)); |
ae038cb0 DJ |
8425 | } |
8426 | ||
3019eac3 | 8427 | /* die_reader_func for load_partial_comp_unit. */ |
ae038cb0 DJ |
8428 | |
8429 | static void | |
dee91e82 | 8430 | load_partial_comp_unit_reader (const struct die_reader_specs *reader, |
d521ce57 | 8431 | const gdb_byte *info_ptr, |
dee91e82 DE |
8432 | struct die_info *comp_unit_die, |
8433 | int has_children, | |
8434 | void *data) | |
ae038cb0 | 8435 | { |
dee91e82 | 8436 | struct dwarf2_cu *cu = reader->cu; |
ae038cb0 | 8437 | |
95554aad | 8438 | prepare_one_comp_unit (cu, comp_unit_die, language_minimal); |
ae038cb0 | 8439 | |
ae038cb0 DJ |
8440 | /* Check if comp unit has_children. |
8441 | If so, read the rest of the partial symbols from this comp unit. | |
0963b4bd | 8442 | If not, there's no more debug_info for this comp unit. */ |
d85a05f0 | 8443 | if (has_children) |
dee91e82 DE |
8444 | load_partial_dies (reader, info_ptr, 0); |
8445 | } | |
98bfdba5 | 8446 | |
dee91e82 DE |
8447 | /* Load the partial DIEs for a secondary CU into memory. |
8448 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 8449 | |
dee91e82 DE |
8450 | static void |
8451 | load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu) | |
8452 | { | |
58f0c718 | 8453 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, false, |
f4dc4d17 | 8454 | load_partial_comp_unit_reader, NULL); |
ae038cb0 DJ |
8455 | } |
8456 | ||
ae038cb0 | 8457 | static void |
ed2dc618 | 8458 | read_comp_units_from_section (struct dwarf2_per_objfile *dwarf2_per_objfile, |
36586728 | 8459 | struct dwarf2_section_info *section, |
f1902523 | 8460 | struct dwarf2_section_info *abbrev_section, |
b76e467d | 8461 | unsigned int is_dwz) |
ae038cb0 | 8462 | { |
d521ce57 | 8463 | const gdb_byte *info_ptr; |
ed2dc618 | 8464 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
be391dca | 8465 | |
b4f54984 | 8466 | if (dwarf_read_debug) |
bf6af496 | 8467 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s\n", |
a32a8923 DE |
8468 | get_section_name (section), |
8469 | get_section_file_name (section)); | |
bf6af496 | 8470 | |
36586728 | 8471 | dwarf2_read_section (objfile, section); |
ae038cb0 | 8472 | |
36586728 | 8473 | info_ptr = section->buffer; |
6e70227d | 8474 | |
36586728 | 8475 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 8476 | { |
ae038cb0 | 8477 | struct dwarf2_per_cu_data *this_cu; |
ae038cb0 | 8478 | |
9c541725 | 8479 | sect_offset sect_off = (sect_offset) (info_ptr - section->buffer); |
ae038cb0 | 8480 | |
f1902523 | 8481 | comp_unit_head cu_header; |
ed2dc618 SM |
8482 | read_and_check_comp_unit_head (dwarf2_per_objfile, &cu_header, section, |
8483 | abbrev_section, info_ptr, | |
8484 | rcuh_kind::COMPILE); | |
ae038cb0 DJ |
8485 | |
8486 | /* Save the compilation unit for later lookup. */ | |
f1902523 JK |
8487 | if (cu_header.unit_type != DW_UT_type) |
8488 | { | |
8489 | this_cu = XOBNEW (&objfile->objfile_obstack, | |
8490 | struct dwarf2_per_cu_data); | |
8491 | memset (this_cu, 0, sizeof (*this_cu)); | |
8492 | } | |
8493 | else | |
8494 | { | |
8495 | auto sig_type = XOBNEW (&objfile->objfile_obstack, | |
8496 | struct signatured_type); | |
8497 | memset (sig_type, 0, sizeof (*sig_type)); | |
8498 | sig_type->signature = cu_header.signature; | |
8499 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
8500 | this_cu = &sig_type->per_cu; | |
8501 | } | |
8502 | this_cu->is_debug_types = (cu_header.unit_type == DW_UT_type); | |
9c541725 | 8503 | this_cu->sect_off = sect_off; |
f1902523 | 8504 | this_cu->length = cu_header.length + cu_header.initial_length_size; |
36586728 | 8505 | this_cu->is_dwz = is_dwz; |
e3b94546 | 8506 | this_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
8a0459fd | 8507 | this_cu->section = section; |
ae038cb0 | 8508 | |
b76e467d | 8509 | dwarf2_per_objfile->all_comp_units.push_back (this_cu); |
ae038cb0 DJ |
8510 | |
8511 | info_ptr = info_ptr + this_cu->length; | |
8512 | } | |
36586728 TT |
8513 | } |
8514 | ||
8515 | /* Create a list of all compilation units in OBJFILE. | |
8516 | This is only done for -readnow and building partial symtabs. */ | |
8517 | ||
8518 | static void | |
ed2dc618 | 8519 | create_all_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
36586728 | 8520 | { |
b76e467d | 8521 | gdb_assert (dwarf2_per_objfile->all_comp_units.empty ()); |
ed2dc618 | 8522 | read_comp_units_from_section (dwarf2_per_objfile, &dwarf2_per_objfile->info, |
b76e467d | 8523 | &dwarf2_per_objfile->abbrev, 0); |
36586728 | 8524 | |
b76e467d | 8525 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
4db1a1dc | 8526 | if (dwz != NULL) |
ed2dc618 | 8527 | read_comp_units_from_section (dwarf2_per_objfile, &dwz->info, &dwz->abbrev, |
b76e467d | 8528 | 1); |
c906108c SS |
8529 | } |
8530 | ||
5734ee8b | 8531 | /* Process all loaded DIEs for compilation unit CU, starting at |
cdc07690 | 8532 | FIRST_DIE. The caller should pass SET_ADDRMAP == 1 if the compilation |
5734ee8b | 8533 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or |
cdc07690 YQ |
8534 | DW_AT_ranges). See the comments of add_partial_subprogram on how |
8535 | SET_ADDRMAP is used and how *LOWPC and *HIGHPC are updated. */ | |
c906108c | 8536 | |
72bf9492 DJ |
8537 | static void |
8538 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
cdc07690 YQ |
8539 | CORE_ADDR *highpc, int set_addrmap, |
8540 | struct dwarf2_cu *cu) | |
c906108c | 8541 | { |
72bf9492 | 8542 | struct partial_die_info *pdi; |
c906108c | 8543 | |
91c24f0a DC |
8544 | /* Now, march along the PDI's, descending into ones which have |
8545 | interesting children but skipping the children of the other ones, | |
8546 | until we reach the end of the compilation unit. */ | |
c906108c | 8547 | |
72bf9492 | 8548 | pdi = first_die; |
91c24f0a | 8549 | |
72bf9492 DJ |
8550 | while (pdi != NULL) |
8551 | { | |
52356b79 | 8552 | pdi->fixup (cu); |
c906108c | 8553 | |
f55ee35c | 8554 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
8555 | children, so we need to look at them. Ditto for anonymous |
8556 | enums. */ | |
933c6fe4 | 8557 | |
72bf9492 | 8558 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
95554aad | 8559 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
b1dc1806 XR |
8560 | || pdi->tag == DW_TAG_imported_unit |
8561 | || pdi->tag == DW_TAG_inlined_subroutine) | |
c906108c | 8562 | { |
72bf9492 | 8563 | switch (pdi->tag) |
c906108c SS |
8564 | { |
8565 | case DW_TAG_subprogram: | |
b1dc1806 | 8566 | case DW_TAG_inlined_subroutine: |
cdc07690 | 8567 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
c906108c | 8568 | break; |
72929c62 | 8569 | case DW_TAG_constant: |
c906108c SS |
8570 | case DW_TAG_variable: |
8571 | case DW_TAG_typedef: | |
91c24f0a | 8572 | case DW_TAG_union_type: |
72bf9492 | 8573 | if (!pdi->is_declaration) |
63d06c5c | 8574 | { |
72bf9492 | 8575 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
8576 | } |
8577 | break; | |
c906108c | 8578 | case DW_TAG_class_type: |
680b30c7 | 8579 | case DW_TAG_interface_type: |
c906108c | 8580 | case DW_TAG_structure_type: |
72bf9492 | 8581 | if (!pdi->is_declaration) |
c906108c | 8582 | { |
72bf9492 | 8583 | add_partial_symbol (pdi, cu); |
c906108c | 8584 | } |
b7fee5a3 KS |
8585 | if ((cu->language == language_rust |
8586 | || cu->language == language_cplus) && pdi->has_children) | |
e98c9e7c TT |
8587 | scan_partial_symbols (pdi->die_child, lowpc, highpc, |
8588 | set_addrmap, cu); | |
c906108c | 8589 | break; |
91c24f0a | 8590 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
8591 | if (!pdi->is_declaration) |
8592 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
8593 | break; |
8594 | case DW_TAG_base_type: | |
a02abb62 | 8595 | case DW_TAG_subrange_type: |
c906108c | 8596 | /* File scope base type definitions are added to the partial |
c5aa993b | 8597 | symbol table. */ |
72bf9492 | 8598 | add_partial_symbol (pdi, cu); |
c906108c | 8599 | break; |
d9fa45fe | 8600 | case DW_TAG_namespace: |
cdc07690 | 8601 | add_partial_namespace (pdi, lowpc, highpc, set_addrmap, cu); |
91c24f0a | 8602 | break; |
5d7cb8df | 8603 | case DW_TAG_module: |
cdc07690 | 8604 | add_partial_module (pdi, lowpc, highpc, set_addrmap, cu); |
5d7cb8df | 8605 | break; |
95554aad TT |
8606 | case DW_TAG_imported_unit: |
8607 | { | |
8608 | struct dwarf2_per_cu_data *per_cu; | |
8609 | ||
f4dc4d17 DE |
8610 | /* For now we don't handle imported units in type units. */ |
8611 | if (cu->per_cu->is_debug_types) | |
8612 | { | |
8613 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
8614 | " supported in type units [in module %s]"), | |
518817b3 | 8615 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
f4dc4d17 DE |
8616 | } |
8617 | ||
e3b94546 SM |
8618 | per_cu = dwarf2_find_containing_comp_unit |
8619 | (pdi->d.sect_off, pdi->is_dwz, | |
518817b3 | 8620 | cu->per_cu->dwarf2_per_objfile); |
95554aad TT |
8621 | |
8622 | /* Go read the partial unit, if needed. */ | |
8623 | if (per_cu->v.psymtab == NULL) | |
b93601f3 | 8624 | process_psymtab_comp_unit (per_cu, 1, cu->language); |
95554aad | 8625 | |
f4dc4d17 | 8626 | VEC_safe_push (dwarf2_per_cu_ptr, |
796a7ff8 | 8627 | cu->per_cu->imported_symtabs, per_cu); |
95554aad TT |
8628 | } |
8629 | break; | |
74921315 KS |
8630 | case DW_TAG_imported_declaration: |
8631 | add_partial_symbol (pdi, cu); | |
8632 | break; | |
c906108c SS |
8633 | default: |
8634 | break; | |
8635 | } | |
8636 | } | |
8637 | ||
72bf9492 DJ |
8638 | /* If the die has a sibling, skip to the sibling. */ |
8639 | ||
8640 | pdi = pdi->die_sibling; | |
8641 | } | |
8642 | } | |
8643 | ||
8644 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 8645 | |
72bf9492 | 8646 | Normally, this is simple. For C++, the parent DIE's fully scoped |
9c37b5ae | 8647 | name is concatenated with "::" and the partial DIE's name. |
72bf9492 DJ |
8648 | Enumerators are an exception; they use the scope of their parent |
8649 | enumeration type, i.e. the name of the enumeration type is not | |
8650 | prepended to the enumerator. | |
91c24f0a | 8651 | |
72bf9492 DJ |
8652 | There are two complexities. One is DW_AT_specification; in this |
8653 | case "parent" means the parent of the target of the specification, | |
8654 | instead of the direct parent of the DIE. The other is compilers | |
8655 | which do not emit DW_TAG_namespace; in this case we try to guess | |
8656 | the fully qualified name of structure types from their members' | |
8657 | linkage names. This must be done using the DIE's children rather | |
8658 | than the children of any DW_AT_specification target. We only need | |
8659 | to do this for structures at the top level, i.e. if the target of | |
8660 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
8661 | have a parent. */ | |
8662 | ||
8663 | /* Compute the scope prefix associated with PDI's parent, in | |
8664 | compilation unit CU. The result will be allocated on CU's | |
8665 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
8666 | field. NULL is returned if no prefix is necessary. */ | |
15d034d0 | 8667 | static const char * |
72bf9492 DJ |
8668 | partial_die_parent_scope (struct partial_die_info *pdi, |
8669 | struct dwarf2_cu *cu) | |
8670 | { | |
15d034d0 | 8671 | const char *grandparent_scope; |
72bf9492 | 8672 | struct partial_die_info *parent, *real_pdi; |
91c24f0a | 8673 | |
72bf9492 DJ |
8674 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
8675 | then this means the parent of the specification DIE. */ | |
8676 | ||
8677 | real_pdi = pdi; | |
72bf9492 | 8678 | while (real_pdi->has_specification) |
36586728 TT |
8679 | real_pdi = find_partial_die (real_pdi->spec_offset, |
8680 | real_pdi->spec_is_dwz, cu); | |
72bf9492 DJ |
8681 | |
8682 | parent = real_pdi->die_parent; | |
8683 | if (parent == NULL) | |
8684 | return NULL; | |
8685 | ||
8686 | if (parent->scope_set) | |
8687 | return parent->scope; | |
8688 | ||
52356b79 | 8689 | parent->fixup (cu); |
72bf9492 | 8690 | |
10b3939b | 8691 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 8692 | |
acebe513 UW |
8693 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
8694 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
8695 | Work around this problem here. */ | |
8696 | if (cu->language == language_cplus | |
6e70227d | 8697 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
8698 | && strcmp (parent->name, "::") == 0 |
8699 | && grandparent_scope == NULL) | |
8700 | { | |
8701 | parent->scope = NULL; | |
8702 | parent->scope_set = 1; | |
8703 | return NULL; | |
8704 | } | |
8705 | ||
9c6c53f7 SA |
8706 | if (pdi->tag == DW_TAG_enumerator) |
8707 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
8708 | parent->scope = grandparent_scope; | |
8709 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 8710 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
8711 | || parent->tag == DW_TAG_structure_type |
8712 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 8713 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a TT |
8714 | || parent->tag == DW_TAG_union_type |
8715 | || parent->tag == DW_TAG_enumeration_type) | |
72bf9492 DJ |
8716 | { |
8717 | if (grandparent_scope == NULL) | |
8718 | parent->scope = parent->name; | |
8719 | else | |
3e43a32a MS |
8720 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
8721 | grandparent_scope, | |
f55ee35c | 8722 | parent->name, 0, cu); |
72bf9492 | 8723 | } |
72bf9492 DJ |
8724 | else |
8725 | { | |
8726 | /* FIXME drow/2004-04-01: What should we be doing with | |
8727 | function-local names? For partial symbols, we should probably be | |
8728 | ignoring them. */ | |
b98664d3 | 8729 | complaint (_("unhandled containing DIE tag %d for DIE at %s"), |
9d8780f0 | 8730 | parent->tag, sect_offset_str (pdi->sect_off)); |
72bf9492 | 8731 | parent->scope = grandparent_scope; |
c906108c SS |
8732 | } |
8733 | ||
72bf9492 DJ |
8734 | parent->scope_set = 1; |
8735 | return parent->scope; | |
8736 | } | |
8737 | ||
8738 | /* Return the fully scoped name associated with PDI, from compilation unit | |
8739 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 8740 | |
72bf9492 DJ |
8741 | static char * |
8742 | partial_die_full_name (struct partial_die_info *pdi, | |
8743 | struct dwarf2_cu *cu) | |
8744 | { | |
15d034d0 | 8745 | const char *parent_scope; |
72bf9492 | 8746 | |
98bfdba5 PA |
8747 | /* If this is a template instantiation, we can not work out the |
8748 | template arguments from partial DIEs. So, unfortunately, we have | |
8749 | to go through the full DIEs. At least any work we do building | |
8750 | types here will be reused if full symbols are loaded later. */ | |
8751 | if (pdi->has_template_arguments) | |
8752 | { | |
52356b79 | 8753 | pdi->fixup (cu); |
98bfdba5 PA |
8754 | |
8755 | if (pdi->name != NULL && strchr (pdi->name, '<') == NULL) | |
8756 | { | |
8757 | struct die_info *die; | |
8758 | struct attribute attr; | |
8759 | struct dwarf2_cu *ref_cu = cu; | |
8760 | ||
b64f50a1 | 8761 | /* DW_FORM_ref_addr is using section offset. */ |
b4069958 | 8762 | attr.name = (enum dwarf_attribute) 0; |
98bfdba5 | 8763 | attr.form = DW_FORM_ref_addr; |
9c541725 | 8764 | attr.u.unsnd = to_underlying (pdi->sect_off); |
98bfdba5 PA |
8765 | die = follow_die_ref (NULL, &attr, &ref_cu); |
8766 | ||
8767 | return xstrdup (dwarf2_full_name (NULL, die, ref_cu)); | |
8768 | } | |
8769 | } | |
8770 | ||
72bf9492 DJ |
8771 | parent_scope = partial_die_parent_scope (pdi, cu); |
8772 | if (parent_scope == NULL) | |
8773 | return NULL; | |
8774 | else | |
f55ee35c | 8775 | return typename_concat (NULL, parent_scope, pdi->name, 0, cu); |
c906108c SS |
8776 | } |
8777 | ||
8778 | static void | |
72bf9492 | 8779 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 8780 | { |
518817b3 SM |
8781 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8782 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 8783 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 8784 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 8785 | CORE_ADDR addr = 0; |
15d034d0 | 8786 | const char *actual_name = NULL; |
e142c38c | 8787 | CORE_ADDR baseaddr; |
15d034d0 | 8788 | char *built_actual_name; |
e142c38c DJ |
8789 | |
8790 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 8791 | |
15d034d0 TT |
8792 | built_actual_name = partial_die_full_name (pdi, cu); |
8793 | if (built_actual_name != NULL) | |
8794 | actual_name = built_actual_name; | |
63d06c5c | 8795 | |
72bf9492 DJ |
8796 | if (actual_name == NULL) |
8797 | actual_name = pdi->name; | |
8798 | ||
c906108c SS |
8799 | switch (pdi->tag) |
8800 | { | |
b1dc1806 | 8801 | case DW_TAG_inlined_subroutine: |
c906108c | 8802 | case DW_TAG_subprogram: |
3e29f34a | 8803 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, pdi->lowpc + baseaddr); |
2cfa0c8d | 8804 | if (pdi->is_external || cu->language == language_ada) |
c906108c | 8805 | { |
2cfa0c8d JB |
8806 | /* brobecker/2007-12-26: Normally, only "external" DIEs are part |
8807 | of the global scope. But in Ada, we want to be able to access | |
8808 | nested procedures globally. So all Ada subprograms are stored | |
8809 | in the global scope. */ | |
f47fb265 | 8810 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 8811 | built_actual_name != NULL, |
f47fb265 MS |
8812 | VAR_DOMAIN, LOC_BLOCK, |
8813 | &objfile->global_psymbols, | |
1762568f | 8814 | addr, cu->language, objfile); |
c906108c SS |
8815 | } |
8816 | else | |
8817 | { | |
f47fb265 | 8818 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 8819 | built_actual_name != NULL, |
f47fb265 MS |
8820 | VAR_DOMAIN, LOC_BLOCK, |
8821 | &objfile->static_psymbols, | |
1762568f | 8822 | addr, cu->language, objfile); |
c906108c | 8823 | } |
0c1b455e TT |
8824 | |
8825 | if (pdi->main_subprogram && actual_name != NULL) | |
8826 | set_objfile_main_name (objfile, actual_name, cu->language); | |
c906108c | 8827 | break; |
72929c62 JB |
8828 | case DW_TAG_constant: |
8829 | { | |
af5bf4ad | 8830 | std::vector<partial_symbol *> *list; |
72929c62 JB |
8831 | |
8832 | if (pdi->is_external) | |
8833 | list = &objfile->global_psymbols; | |
8834 | else | |
8835 | list = &objfile->static_psymbols; | |
f47fb265 | 8836 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 8837 | built_actual_name != NULL, VAR_DOMAIN, LOC_STATIC, |
1762568f | 8838 | list, 0, cu->language, objfile); |
72929c62 JB |
8839 | } |
8840 | break; | |
c906108c | 8841 | case DW_TAG_variable: |
95554aad TT |
8842 | if (pdi->d.locdesc) |
8843 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 8844 | |
95554aad | 8845 | if (pdi->d.locdesc |
caac4577 JG |
8846 | && addr == 0 |
8847 | && !dwarf2_per_objfile->has_section_at_zero) | |
8848 | { | |
8849 | /* A global or static variable may also have been stripped | |
8850 | out by the linker if unused, in which case its address | |
8851 | will be nullified; do not add such variables into partial | |
8852 | symbol table then. */ | |
8853 | } | |
8854 | else if (pdi->is_external) | |
c906108c SS |
8855 | { |
8856 | /* Global Variable. | |
8857 | Don't enter into the minimal symbol tables as there is | |
8858 | a minimal symbol table entry from the ELF symbols already. | |
8859 | Enter into partial symbol table if it has a location | |
8860 | descriptor or a type. | |
8861 | If the location descriptor is missing, new_symbol will create | |
8862 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
8863 | be determined from the minimal symbol table whenever the variable | |
8864 | is referenced. | |
8865 | The address for the partial symbol table entry is not | |
8866 | used by GDB, but it comes in handy for debugging partial symbol | |
8867 | table building. */ | |
8868 | ||
95554aad | 8869 | if (pdi->d.locdesc || pdi->has_type) |
f47fb265 | 8870 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 8871 | built_actual_name != NULL, |
f47fb265 MS |
8872 | VAR_DOMAIN, LOC_STATIC, |
8873 | &objfile->global_psymbols, | |
1762568f | 8874 | addr + baseaddr, |
f47fb265 | 8875 | cu->language, objfile); |
c906108c SS |
8876 | } |
8877 | else | |
8878 | { | |
ff908ebf AW |
8879 | int has_loc = pdi->d.locdesc != NULL; |
8880 | ||
8881 | /* Static Variable. Skip symbols whose value we cannot know (those | |
8882 | without location descriptors or constant values). */ | |
8883 | if (!has_loc && !pdi->has_const_value) | |
decbce07 | 8884 | { |
15d034d0 | 8885 | xfree (built_actual_name); |
decbce07 MS |
8886 | return; |
8887 | } | |
ff908ebf | 8888 | |
f47fb265 | 8889 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 8890 | built_actual_name != NULL, |
f47fb265 MS |
8891 | VAR_DOMAIN, LOC_STATIC, |
8892 | &objfile->static_psymbols, | |
ff908ebf | 8893 | has_loc ? addr + baseaddr : (CORE_ADDR) 0, |
f47fb265 | 8894 | cu->language, objfile); |
c906108c SS |
8895 | } |
8896 | break; | |
8897 | case DW_TAG_typedef: | |
8898 | case DW_TAG_base_type: | |
a02abb62 | 8899 | case DW_TAG_subrange_type: |
38d518c9 | 8900 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 8901 | built_actual_name != NULL, |
176620f1 | 8902 | VAR_DOMAIN, LOC_TYPEDEF, |
c906108c | 8903 | &objfile->static_psymbols, |
1762568f | 8904 | 0, cu->language, objfile); |
c906108c | 8905 | break; |
74921315 | 8906 | case DW_TAG_imported_declaration: |
72bf9492 DJ |
8907 | case DW_TAG_namespace: |
8908 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
15d034d0 | 8909 | built_actual_name != NULL, |
72bf9492 DJ |
8910 | VAR_DOMAIN, LOC_TYPEDEF, |
8911 | &objfile->global_psymbols, | |
1762568f | 8912 | 0, cu->language, objfile); |
72bf9492 | 8913 | break; |
530e8392 KB |
8914 | case DW_TAG_module: |
8915 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
8916 | built_actual_name != NULL, | |
8917 | MODULE_DOMAIN, LOC_TYPEDEF, | |
8918 | &objfile->global_psymbols, | |
1762568f | 8919 | 0, cu->language, objfile); |
530e8392 | 8920 | break; |
c906108c | 8921 | case DW_TAG_class_type: |
680b30c7 | 8922 | case DW_TAG_interface_type: |
c906108c SS |
8923 | case DW_TAG_structure_type: |
8924 | case DW_TAG_union_type: | |
8925 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
8926 | /* Skip external references. The DWARF standard says in the section |
8927 | about "Structure, Union, and Class Type Entries": "An incomplete | |
8928 | structure, union or class type is represented by a structure, | |
8929 | union or class entry that does not have a byte size attribute | |
8930 | and that has a DW_AT_declaration attribute." */ | |
8931 | if (!pdi->has_byte_size && pdi->is_declaration) | |
decbce07 | 8932 | { |
15d034d0 | 8933 | xfree (built_actual_name); |
decbce07 MS |
8934 | return; |
8935 | } | |
fa4028e9 | 8936 | |
63d06c5c DC |
8937 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
8938 | static vs. global. */ | |
38d518c9 | 8939 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 8940 | built_actual_name != NULL, |
176620f1 | 8941 | STRUCT_DOMAIN, LOC_TYPEDEF, |
9c37b5ae | 8942 | cu->language == language_cplus |
63d06c5c DC |
8943 | ? &objfile->global_psymbols |
8944 | : &objfile->static_psymbols, | |
1762568f | 8945 | 0, cu->language, objfile); |
c906108c | 8946 | |
c906108c SS |
8947 | break; |
8948 | case DW_TAG_enumerator: | |
38d518c9 | 8949 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 8950 | built_actual_name != NULL, |
176620f1 | 8951 | VAR_DOMAIN, LOC_CONST, |
9c37b5ae | 8952 | cu->language == language_cplus |
f6fe98ef DJ |
8953 | ? &objfile->global_psymbols |
8954 | : &objfile->static_psymbols, | |
1762568f | 8955 | 0, cu->language, objfile); |
c906108c SS |
8956 | break; |
8957 | default: | |
8958 | break; | |
8959 | } | |
5c4e30ca | 8960 | |
15d034d0 | 8961 | xfree (built_actual_name); |
c906108c SS |
8962 | } |
8963 | ||
5c4e30ca DC |
8964 | /* Read a partial die corresponding to a namespace; also, add a symbol |
8965 | corresponding to that namespace to the symbol table. NAMESPACE is | |
8966 | the name of the enclosing namespace. */ | |
91c24f0a | 8967 | |
72bf9492 DJ |
8968 | static void |
8969 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 8970 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
cdc07690 | 8971 | int set_addrmap, struct dwarf2_cu *cu) |
91c24f0a | 8972 | { |
72bf9492 | 8973 | /* Add a symbol for the namespace. */ |
e7c27a73 | 8974 | |
72bf9492 | 8975 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
8976 | |
8977 | /* Now scan partial symbols in that namespace. */ | |
8978 | ||
91c24f0a | 8979 | if (pdi->has_children) |
cdc07690 | 8980 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
91c24f0a DC |
8981 | } |
8982 | ||
5d7cb8df JK |
8983 | /* Read a partial die corresponding to a Fortran module. */ |
8984 | ||
8985 | static void | |
8986 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
cdc07690 | 8987 | CORE_ADDR *highpc, int set_addrmap, struct dwarf2_cu *cu) |
5d7cb8df | 8988 | { |
530e8392 KB |
8989 | /* Add a symbol for the namespace. */ |
8990 | ||
8991 | add_partial_symbol (pdi, cu); | |
8992 | ||
f55ee35c | 8993 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
8994 | |
8995 | if (pdi->has_children) | |
cdc07690 | 8996 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
5d7cb8df JK |
8997 | } |
8998 | ||
b1dc1806 XR |
8999 | /* Read a partial die corresponding to a subprogram or an inlined |
9000 | subprogram and create a partial symbol for that subprogram. | |
9001 | When the CU language allows it, this routine also defines a partial | |
9002 | symbol for each nested subprogram that this subprogram contains. | |
9003 | If SET_ADDRMAP is true, record the covered ranges in the addrmap. | |
9004 | Set *LOWPC and *HIGHPC to the lowest and highest PC values found in PDI. | |
6e70227d | 9005 | |
cdc07690 YQ |
9006 | PDI may also be a lexical block, in which case we simply search |
9007 | recursively for subprograms defined inside that lexical block. | |
bc30ff58 JB |
9008 | Again, this is only performed when the CU language allows this |
9009 | type of definitions. */ | |
9010 | ||
9011 | static void | |
9012 | add_partial_subprogram (struct partial_die_info *pdi, | |
9013 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 9014 | int set_addrmap, struct dwarf2_cu *cu) |
bc30ff58 | 9015 | { |
b1dc1806 | 9016 | if (pdi->tag == DW_TAG_subprogram || pdi->tag == DW_TAG_inlined_subroutine) |
bc30ff58 JB |
9017 | { |
9018 | if (pdi->has_pc_info) | |
9019 | { | |
9020 | if (pdi->lowpc < *lowpc) | |
9021 | *lowpc = pdi->lowpc; | |
9022 | if (pdi->highpc > *highpc) | |
9023 | *highpc = pdi->highpc; | |
cdc07690 | 9024 | if (set_addrmap) |
5734ee8b | 9025 | { |
518817b3 | 9026 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a MR |
9027 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9028 | CORE_ADDR baseaddr; | |
9029 | CORE_ADDR highpc; | |
9030 | CORE_ADDR lowpc; | |
5734ee8b DJ |
9031 | |
9032 | baseaddr = ANOFFSET (objfile->section_offsets, | |
9033 | SECT_OFF_TEXT (objfile)); | |
3e29f34a MR |
9034 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, |
9035 | pdi->lowpc + baseaddr); | |
9036 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, | |
9037 | pdi->highpc + baseaddr); | |
9038 | addrmap_set_empty (objfile->psymtabs_addrmap, lowpc, highpc - 1, | |
9291a0cd | 9039 | cu->per_cu->v.psymtab); |
5734ee8b | 9040 | } |
481860b3 GB |
9041 | } |
9042 | ||
9043 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
9044 | { | |
bc30ff58 | 9045 | if (!pdi->is_declaration) |
e8d05480 JB |
9046 | /* Ignore subprogram DIEs that do not have a name, they are |
9047 | illegal. Do not emit a complaint at this point, we will | |
9048 | do so when we convert this psymtab into a symtab. */ | |
9049 | if (pdi->name) | |
9050 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
9051 | } |
9052 | } | |
6e70227d | 9053 | |
bc30ff58 JB |
9054 | if (! pdi->has_children) |
9055 | return; | |
9056 | ||
9057 | if (cu->language == language_ada) | |
9058 | { | |
9059 | pdi = pdi->die_child; | |
9060 | while (pdi != NULL) | |
9061 | { | |
52356b79 | 9062 | pdi->fixup (cu); |
bc30ff58 | 9063 | if (pdi->tag == DW_TAG_subprogram |
b1dc1806 | 9064 | || pdi->tag == DW_TAG_inlined_subroutine |
bc30ff58 | 9065 | || pdi->tag == DW_TAG_lexical_block) |
cdc07690 | 9066 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
bc30ff58 JB |
9067 | pdi = pdi->die_sibling; |
9068 | } | |
9069 | } | |
9070 | } | |
9071 | ||
91c24f0a DC |
9072 | /* Read a partial die corresponding to an enumeration type. */ |
9073 | ||
72bf9492 DJ |
9074 | static void |
9075 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
9076 | struct dwarf2_cu *cu) | |
91c24f0a | 9077 | { |
72bf9492 | 9078 | struct partial_die_info *pdi; |
91c24f0a DC |
9079 | |
9080 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
9081 | add_partial_symbol (enum_pdi, cu); |
9082 | ||
9083 | pdi = enum_pdi->die_child; | |
9084 | while (pdi) | |
91c24f0a | 9085 | { |
72bf9492 | 9086 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
b98664d3 | 9087 | complaint (_("malformed enumerator DIE ignored")); |
91c24f0a | 9088 | else |
72bf9492 DJ |
9089 | add_partial_symbol (pdi, cu); |
9090 | pdi = pdi->die_sibling; | |
91c24f0a | 9091 | } |
91c24f0a DC |
9092 | } |
9093 | ||
6caca83c CC |
9094 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
9095 | ||
9096 | static unsigned int | |
d521ce57 | 9097 | peek_abbrev_code (bfd *abfd, const gdb_byte *info_ptr) |
6caca83c CC |
9098 | { |
9099 | unsigned int bytes_read; | |
9100 | ||
9101 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9102 | } | |
9103 | ||
685af9cd TT |
9104 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit |
9105 | READER::CU. Use READER::ABBREV_TABLE to lookup any abbreviation. | |
9106 | ||
4bb7a0a7 DJ |
9107 | Return the corresponding abbrev, or NULL if the number is zero (indicating |
9108 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
9109 | the initial number. */ | |
9110 | ||
9111 | static struct abbrev_info * | |
685af9cd TT |
9112 | peek_die_abbrev (const die_reader_specs &reader, |
9113 | const gdb_byte *info_ptr, unsigned int *bytes_read) | |
4bb7a0a7 | 9114 | { |
685af9cd | 9115 | dwarf2_cu *cu = reader.cu; |
518817b3 | 9116 | bfd *abfd = cu->per_cu->dwarf2_per_objfile->objfile->obfd; |
685af9cd TT |
9117 | unsigned int abbrev_number |
9118 | = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
4bb7a0a7 DJ |
9119 | |
9120 | if (abbrev_number == 0) | |
9121 | return NULL; | |
9122 | ||
685af9cd | 9123 | abbrev_info *abbrev = reader.abbrev_table->lookup_abbrev (abbrev_number); |
4bb7a0a7 DJ |
9124 | if (!abbrev) |
9125 | { | |
422b9917 | 9126 | error (_("Dwarf Error: Could not find abbrev number %d in %s" |
9d8780f0 | 9127 | " at offset %s [in module %s]"), |
422b9917 | 9128 | abbrev_number, cu->per_cu->is_debug_types ? "TU" : "CU", |
9d8780f0 | 9129 | sect_offset_str (cu->header.sect_off), bfd_get_filename (abfd)); |
4bb7a0a7 DJ |
9130 | } |
9131 | ||
9132 | return abbrev; | |
9133 | } | |
9134 | ||
93311388 DE |
9135 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
9136 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
9137 | DIE. Any children of the skipped DIEs will also be skipped. */ |
9138 | ||
d521ce57 TT |
9139 | static const gdb_byte * |
9140 | skip_children (const struct die_reader_specs *reader, const gdb_byte *info_ptr) | |
4bb7a0a7 | 9141 | { |
4bb7a0a7 DJ |
9142 | while (1) |
9143 | { | |
685af9cd TT |
9144 | unsigned int bytes_read; |
9145 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); | |
9146 | ||
4bb7a0a7 DJ |
9147 | if (abbrev == NULL) |
9148 | return info_ptr + bytes_read; | |
9149 | else | |
dee91e82 | 9150 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
9151 | } |
9152 | } | |
9153 | ||
93311388 DE |
9154 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
9155 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
9156 | abbrev corresponding to that skipped uleb128 should be passed in |
9157 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
9158 | children. */ | |
9159 | ||
d521ce57 TT |
9160 | static const gdb_byte * |
9161 | skip_one_die (const struct die_reader_specs *reader, const gdb_byte *info_ptr, | |
dee91e82 | 9162 | struct abbrev_info *abbrev) |
4bb7a0a7 DJ |
9163 | { |
9164 | unsigned int bytes_read; | |
9165 | struct attribute attr; | |
dee91e82 DE |
9166 | bfd *abfd = reader->abfd; |
9167 | struct dwarf2_cu *cu = reader->cu; | |
d521ce57 | 9168 | const gdb_byte *buffer = reader->buffer; |
f664829e | 9169 | const gdb_byte *buffer_end = reader->buffer_end; |
4bb7a0a7 DJ |
9170 | unsigned int form, i; |
9171 | ||
9172 | for (i = 0; i < abbrev->num_attrs; i++) | |
9173 | { | |
9174 | /* The only abbrev we care about is DW_AT_sibling. */ | |
9175 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
9176 | { | |
dee91e82 | 9177 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
4bb7a0a7 | 9178 | if (attr.form == DW_FORM_ref_addr) |
b98664d3 | 9179 | complaint (_("ignoring absolute DW_AT_sibling")); |
4bb7a0a7 | 9180 | else |
b9502d3f | 9181 | { |
9c541725 PA |
9182 | sect_offset off = dwarf2_get_ref_die_offset (&attr); |
9183 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); | |
b9502d3f WN |
9184 | |
9185 | if (sibling_ptr < info_ptr) | |
b98664d3 | 9186 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 KS |
9187 | else if (sibling_ptr > reader->buffer_end) |
9188 | dwarf2_section_buffer_overflow_complaint (reader->die_section); | |
b9502d3f WN |
9189 | else |
9190 | return sibling_ptr; | |
9191 | } | |
4bb7a0a7 DJ |
9192 | } |
9193 | ||
9194 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
9195 | form = abbrev->attrs[i].form; | |
9196 | skip_attribute: | |
9197 | switch (form) | |
9198 | { | |
4bb7a0a7 | 9199 | case DW_FORM_ref_addr: |
ae411497 TT |
9200 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
9201 | and later it is offset sized. */ | |
9202 | if (cu->header.version == 2) | |
9203 | info_ptr += cu->header.addr_size; | |
9204 | else | |
9205 | info_ptr += cu->header.offset_size; | |
9206 | break; | |
36586728 TT |
9207 | case DW_FORM_GNU_ref_alt: |
9208 | info_ptr += cu->header.offset_size; | |
9209 | break; | |
ae411497 | 9210 | case DW_FORM_addr: |
4bb7a0a7 DJ |
9211 | info_ptr += cu->header.addr_size; |
9212 | break; | |
9213 | case DW_FORM_data1: | |
9214 | case DW_FORM_ref1: | |
9215 | case DW_FORM_flag: | |
9216 | info_ptr += 1; | |
9217 | break; | |
2dc7f7b3 | 9218 | case DW_FORM_flag_present: |
43988095 | 9219 | case DW_FORM_implicit_const: |
2dc7f7b3 | 9220 | break; |
4bb7a0a7 DJ |
9221 | case DW_FORM_data2: |
9222 | case DW_FORM_ref2: | |
9223 | info_ptr += 2; | |
9224 | break; | |
9225 | case DW_FORM_data4: | |
9226 | case DW_FORM_ref4: | |
9227 | info_ptr += 4; | |
9228 | break; | |
9229 | case DW_FORM_data8: | |
9230 | case DW_FORM_ref8: | |
55f1336d | 9231 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
9232 | info_ptr += 8; |
9233 | break; | |
0224619f JK |
9234 | case DW_FORM_data16: |
9235 | info_ptr += 16; | |
9236 | break; | |
4bb7a0a7 | 9237 | case DW_FORM_string: |
9b1c24c8 | 9238 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
9239 | info_ptr += bytes_read; |
9240 | break; | |
2dc7f7b3 | 9241 | case DW_FORM_sec_offset: |
4bb7a0a7 | 9242 | case DW_FORM_strp: |
36586728 | 9243 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
9244 | info_ptr += cu->header.offset_size; |
9245 | break; | |
2dc7f7b3 | 9246 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
9247 | case DW_FORM_block: |
9248 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9249 | info_ptr += bytes_read; | |
9250 | break; | |
9251 | case DW_FORM_block1: | |
9252 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
9253 | break; | |
9254 | case DW_FORM_block2: | |
9255 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
9256 | break; | |
9257 | case DW_FORM_block4: | |
9258 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
9259 | break; | |
9260 | case DW_FORM_sdata: | |
9261 | case DW_FORM_udata: | |
9262 | case DW_FORM_ref_udata: | |
3019eac3 DE |
9263 | case DW_FORM_GNU_addr_index: |
9264 | case DW_FORM_GNU_str_index: | |
d521ce57 | 9265 | info_ptr = safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
9266 | break; |
9267 | case DW_FORM_indirect: | |
9268 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9269 | info_ptr += bytes_read; | |
9270 | /* We need to continue parsing from here, so just go back to | |
9271 | the top. */ | |
9272 | goto skip_attribute; | |
9273 | ||
9274 | default: | |
3e43a32a MS |
9275 | error (_("Dwarf Error: Cannot handle %s " |
9276 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
9277 | dwarf_form_name (form), |
9278 | bfd_get_filename (abfd)); | |
9279 | } | |
9280 | } | |
9281 | ||
9282 | if (abbrev->has_children) | |
dee91e82 | 9283 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
9284 | else |
9285 | return info_ptr; | |
9286 | } | |
9287 | ||
93311388 | 9288 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 9289 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 9290 | |
d521ce57 | 9291 | static const gdb_byte * |
dee91e82 DE |
9292 | locate_pdi_sibling (const struct die_reader_specs *reader, |
9293 | struct partial_die_info *orig_pdi, | |
d521ce57 | 9294 | const gdb_byte *info_ptr) |
91c24f0a DC |
9295 | { |
9296 | /* Do we know the sibling already? */ | |
72bf9492 | 9297 | |
91c24f0a DC |
9298 | if (orig_pdi->sibling) |
9299 | return orig_pdi->sibling; | |
9300 | ||
9301 | /* Are there any children to deal with? */ | |
9302 | ||
9303 | if (!orig_pdi->has_children) | |
9304 | return info_ptr; | |
9305 | ||
4bb7a0a7 | 9306 | /* Skip the children the long way. */ |
91c24f0a | 9307 | |
dee91e82 | 9308 | return skip_children (reader, info_ptr); |
91c24f0a DC |
9309 | } |
9310 | ||
257e7a09 | 9311 | /* Expand this partial symbol table into a full symbol table. SELF is |
442e4d9c | 9312 | not NULL. */ |
c906108c SS |
9313 | |
9314 | static void | |
257e7a09 YQ |
9315 | dwarf2_read_symtab (struct partial_symtab *self, |
9316 | struct objfile *objfile) | |
c906108c | 9317 | { |
ed2dc618 SM |
9318 | struct dwarf2_per_objfile *dwarf2_per_objfile |
9319 | = get_dwarf2_per_objfile (objfile); | |
9320 | ||
257e7a09 | 9321 | if (self->readin) |
c906108c | 9322 | { |
442e4d9c | 9323 | warning (_("bug: psymtab for %s is already read in."), |
257e7a09 | 9324 | self->filename); |
442e4d9c YQ |
9325 | } |
9326 | else | |
9327 | { | |
9328 | if (info_verbose) | |
c906108c | 9329 | { |
442e4d9c | 9330 | printf_filtered (_("Reading in symbols for %s..."), |
257e7a09 | 9331 | self->filename); |
442e4d9c | 9332 | gdb_flush (gdb_stdout); |
c906108c | 9333 | } |
c906108c | 9334 | |
442e4d9c YQ |
9335 | /* If this psymtab is constructed from a debug-only objfile, the |
9336 | has_section_at_zero flag will not necessarily be correct. We | |
9337 | can get the correct value for this flag by looking at the data | |
9338 | associated with the (presumably stripped) associated objfile. */ | |
9339 | if (objfile->separate_debug_objfile_backlink) | |
9340 | { | |
9341 | struct dwarf2_per_objfile *dpo_backlink | |
ed2dc618 | 9342 | = get_dwarf2_per_objfile (objfile->separate_debug_objfile_backlink); |
9a619af0 | 9343 | |
442e4d9c YQ |
9344 | dwarf2_per_objfile->has_section_at_zero |
9345 | = dpo_backlink->has_section_at_zero; | |
9346 | } | |
b2ab525c | 9347 | |
442e4d9c | 9348 | dwarf2_per_objfile->reading_partial_symbols = 0; |
98bfdba5 | 9349 | |
257e7a09 | 9350 | psymtab_to_symtab_1 (self); |
c906108c | 9351 | |
442e4d9c YQ |
9352 | /* Finish up the debug error message. */ |
9353 | if (info_verbose) | |
9354 | printf_filtered (_("done.\n")); | |
c906108c | 9355 | } |
95554aad | 9356 | |
ed2dc618 | 9357 | process_cu_includes (dwarf2_per_objfile); |
c906108c | 9358 | } |
9cdd5dbd DE |
9359 | \f |
9360 | /* Reading in full CUs. */ | |
c906108c | 9361 | |
10b3939b DJ |
9362 | /* Add PER_CU to the queue. */ |
9363 | ||
9364 | static void | |
95554aad TT |
9365 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
9366 | enum language pretend_language) | |
10b3939b DJ |
9367 | { |
9368 | struct dwarf2_queue_item *item; | |
9369 | ||
9370 | per_cu->queued = 1; | |
8d749320 | 9371 | item = XNEW (struct dwarf2_queue_item); |
10b3939b | 9372 | item->per_cu = per_cu; |
95554aad | 9373 | item->pretend_language = pretend_language; |
10b3939b DJ |
9374 | item->next = NULL; |
9375 | ||
9376 | if (dwarf2_queue == NULL) | |
9377 | dwarf2_queue = item; | |
9378 | else | |
9379 | dwarf2_queue_tail->next = item; | |
9380 | ||
9381 | dwarf2_queue_tail = item; | |
9382 | } | |
9383 | ||
89e63ee4 DE |
9384 | /* If PER_CU is not yet queued, add it to the queue. |
9385 | If DEPENDENT_CU is non-NULL, it has a reference to PER_CU so add a | |
9386 | dependency. | |
0907af0c | 9387 | The result is non-zero if PER_CU was queued, otherwise the result is zero |
69d751e3 DE |
9388 | meaning either PER_CU is already queued or it is already loaded. |
9389 | ||
9390 | N.B. There is an invariant here that if a CU is queued then it is loaded. | |
9391 | The caller is required to load PER_CU if we return non-zero. */ | |
0907af0c DE |
9392 | |
9393 | static int | |
89e63ee4 | 9394 | maybe_queue_comp_unit (struct dwarf2_cu *dependent_cu, |
0907af0c DE |
9395 | struct dwarf2_per_cu_data *per_cu, |
9396 | enum language pretend_language) | |
9397 | { | |
9398 | /* We may arrive here during partial symbol reading, if we need full | |
9399 | DIEs to process an unusual case (e.g. template arguments). Do | |
9400 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
ed2dc618 | 9401 | if (per_cu->dwarf2_per_objfile->reading_partial_symbols) |
0907af0c DE |
9402 | { |
9403 | if (per_cu->cu == NULL || per_cu->cu->dies == NULL) | |
9404 | return 1; | |
9405 | return 0; | |
9406 | } | |
9407 | ||
9408 | /* Mark the dependence relation so that we don't flush PER_CU | |
9409 | too early. */ | |
89e63ee4 DE |
9410 | if (dependent_cu != NULL) |
9411 | dwarf2_add_dependence (dependent_cu, per_cu); | |
0907af0c DE |
9412 | |
9413 | /* If it's already on the queue, we have nothing to do. */ | |
9414 | if (per_cu->queued) | |
9415 | return 0; | |
9416 | ||
9417 | /* If the compilation unit is already loaded, just mark it as | |
9418 | used. */ | |
9419 | if (per_cu->cu != NULL) | |
9420 | { | |
9421 | per_cu->cu->last_used = 0; | |
9422 | return 0; | |
9423 | } | |
9424 | ||
9425 | /* Add it to the queue. */ | |
9426 | queue_comp_unit (per_cu, pretend_language); | |
9427 | ||
9428 | return 1; | |
9429 | } | |
9430 | ||
10b3939b DJ |
9431 | /* Process the queue. */ |
9432 | ||
9433 | static void | |
ed2dc618 | 9434 | process_queue (struct dwarf2_per_objfile *dwarf2_per_objfile) |
10b3939b DJ |
9435 | { |
9436 | struct dwarf2_queue_item *item, *next_item; | |
9437 | ||
b4f54984 | 9438 | if (dwarf_read_debug) |
45cfd468 DE |
9439 | { |
9440 | fprintf_unfiltered (gdb_stdlog, | |
9441 | "Expanding one or more symtabs of objfile %s ...\n", | |
4262abfb | 9442 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 DE |
9443 | } |
9444 | ||
03dd20cc DJ |
9445 | /* The queue starts out with one item, but following a DIE reference |
9446 | may load a new CU, adding it to the end of the queue. */ | |
10b3939b DJ |
9447 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) |
9448 | { | |
cc12ce38 DE |
9449 | if ((dwarf2_per_objfile->using_index |
9450 | ? !item->per_cu->v.quick->compunit_symtab | |
9451 | : (item->per_cu->v.psymtab && !item->per_cu->v.psymtab->readin)) | |
9452 | /* Skip dummy CUs. */ | |
9453 | && item->per_cu->cu != NULL) | |
f4dc4d17 DE |
9454 | { |
9455 | struct dwarf2_per_cu_data *per_cu = item->per_cu; | |
73be47f5 | 9456 | unsigned int debug_print_threshold; |
247f5c4f | 9457 | char buf[100]; |
f4dc4d17 | 9458 | |
247f5c4f | 9459 | if (per_cu->is_debug_types) |
f4dc4d17 | 9460 | { |
247f5c4f DE |
9461 | struct signatured_type *sig_type = |
9462 | (struct signatured_type *) per_cu; | |
9463 | ||
9d8780f0 | 9464 | sprintf (buf, "TU %s at offset %s", |
73be47f5 | 9465 | hex_string (sig_type->signature), |
9d8780f0 | 9466 | sect_offset_str (per_cu->sect_off)); |
73be47f5 DE |
9467 | /* There can be 100s of TUs. |
9468 | Only print them in verbose mode. */ | |
9469 | debug_print_threshold = 2; | |
f4dc4d17 | 9470 | } |
247f5c4f | 9471 | else |
73be47f5 | 9472 | { |
9d8780f0 SM |
9473 | sprintf (buf, "CU at offset %s", |
9474 | sect_offset_str (per_cu->sect_off)); | |
73be47f5 DE |
9475 | debug_print_threshold = 1; |
9476 | } | |
247f5c4f | 9477 | |
b4f54984 | 9478 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 9479 | fprintf_unfiltered (gdb_stdlog, "Expanding symtab of %s\n", buf); |
f4dc4d17 DE |
9480 | |
9481 | if (per_cu->is_debug_types) | |
9482 | process_full_type_unit (per_cu, item->pretend_language); | |
9483 | else | |
9484 | process_full_comp_unit (per_cu, item->pretend_language); | |
9485 | ||
b4f54984 | 9486 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 9487 | fprintf_unfiltered (gdb_stdlog, "Done expanding %s\n", buf); |
f4dc4d17 | 9488 | } |
10b3939b DJ |
9489 | |
9490 | item->per_cu->queued = 0; | |
9491 | next_item = item->next; | |
9492 | xfree (item); | |
9493 | } | |
9494 | ||
9495 | dwarf2_queue_tail = NULL; | |
45cfd468 | 9496 | |
b4f54984 | 9497 | if (dwarf_read_debug) |
45cfd468 DE |
9498 | { |
9499 | fprintf_unfiltered (gdb_stdlog, "Done expanding symtabs of %s.\n", | |
4262abfb | 9500 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 | 9501 | } |
10b3939b DJ |
9502 | } |
9503 | ||
10b3939b DJ |
9504 | /* Read in full symbols for PST, and anything it depends on. */ |
9505 | ||
c906108c | 9506 | static void |
fba45db2 | 9507 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c | 9508 | { |
10b3939b | 9509 | struct dwarf2_per_cu_data *per_cu; |
aaa75496 JB |
9510 | int i; |
9511 | ||
95554aad TT |
9512 | if (pst->readin) |
9513 | return; | |
9514 | ||
aaa75496 | 9515 | for (i = 0; i < pst->number_of_dependencies; i++) |
95554aad TT |
9516 | if (!pst->dependencies[i]->readin |
9517 | && pst->dependencies[i]->user == NULL) | |
aaa75496 JB |
9518 | { |
9519 | /* Inform about additional files that need to be read in. */ | |
9520 | if (info_verbose) | |
9521 | { | |
a3f17187 | 9522 | /* FIXME: i18n: Need to make this a single string. */ |
aaa75496 JB |
9523 | fputs_filtered (" ", gdb_stdout); |
9524 | wrap_here (""); | |
9525 | fputs_filtered ("and ", gdb_stdout); | |
9526 | wrap_here (""); | |
9527 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
0963b4bd | 9528 | wrap_here (""); /* Flush output. */ |
aaa75496 JB |
9529 | gdb_flush (gdb_stdout); |
9530 | } | |
9531 | psymtab_to_symtab_1 (pst->dependencies[i]); | |
9532 | } | |
9533 | ||
9a3c8263 | 9534 | per_cu = (struct dwarf2_per_cu_data *) pst->read_symtab_private; |
10b3939b DJ |
9535 | |
9536 | if (per_cu == NULL) | |
aaa75496 JB |
9537 | { |
9538 | /* It's an include file, no symbols to read for it. | |
9539 | Everything is in the parent symtab. */ | |
9540 | pst->readin = 1; | |
9541 | return; | |
9542 | } | |
c906108c | 9543 | |
58f0c718 | 9544 | dw2_do_instantiate_symtab (per_cu, false); |
10b3939b DJ |
9545 | } |
9546 | ||
dee91e82 DE |
9547 | /* Trivial hash function for die_info: the hash value of a DIE |
9548 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 9549 | |
dee91e82 DE |
9550 | static hashval_t |
9551 | die_hash (const void *item) | |
10b3939b | 9552 | { |
9a3c8263 | 9553 | const struct die_info *die = (const struct die_info *) item; |
6502dd73 | 9554 | |
9c541725 | 9555 | return to_underlying (die->sect_off); |
dee91e82 | 9556 | } |
63d06c5c | 9557 | |
dee91e82 DE |
9558 | /* Trivial comparison function for die_info structures: two DIEs |
9559 | are equal if they have the same offset. */ | |
98bfdba5 | 9560 | |
dee91e82 DE |
9561 | static int |
9562 | die_eq (const void *item_lhs, const void *item_rhs) | |
9563 | { | |
9a3c8263 SM |
9564 | const struct die_info *die_lhs = (const struct die_info *) item_lhs; |
9565 | const struct die_info *die_rhs = (const struct die_info *) item_rhs; | |
c906108c | 9566 | |
9c541725 | 9567 | return die_lhs->sect_off == die_rhs->sect_off; |
dee91e82 | 9568 | } |
c906108c | 9569 | |
dee91e82 DE |
9570 | /* die_reader_func for load_full_comp_unit. |
9571 | This is identical to read_signatured_type_reader, | |
9572 | but is kept separate for now. */ | |
c906108c | 9573 | |
dee91e82 DE |
9574 | static void |
9575 | load_full_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 9576 | const gdb_byte *info_ptr, |
dee91e82 DE |
9577 | struct die_info *comp_unit_die, |
9578 | int has_children, | |
9579 | void *data) | |
9580 | { | |
9581 | struct dwarf2_cu *cu = reader->cu; | |
9a3c8263 | 9582 | enum language *language_ptr = (enum language *) data; |
6caca83c | 9583 | |
dee91e82 DE |
9584 | gdb_assert (cu->die_hash == NULL); |
9585 | cu->die_hash = | |
9586 | htab_create_alloc_ex (cu->header.length / 12, | |
9587 | die_hash, | |
9588 | die_eq, | |
9589 | NULL, | |
9590 | &cu->comp_unit_obstack, | |
9591 | hashtab_obstack_allocate, | |
9592 | dummy_obstack_deallocate); | |
e142c38c | 9593 | |
dee91e82 DE |
9594 | if (has_children) |
9595 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
9596 | &info_ptr, comp_unit_die); | |
9597 | cu->dies = comp_unit_die; | |
9598 | /* comp_unit_die is not stored in die_hash, no need. */ | |
10b3939b DJ |
9599 | |
9600 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 9601 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 9602 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
9603 | or we won't be able to build types correctly. |
9604 | Similarly, if we do not read the producer, we can not apply | |
9605 | producer-specific interpretation. */ | |
95554aad | 9606 | prepare_one_comp_unit (cu, cu->dies, *language_ptr); |
dee91e82 | 9607 | } |
10b3939b | 9608 | |
dee91e82 | 9609 | /* Load the DIEs associated with PER_CU into memory. */ |
a6c727b2 | 9610 | |
dee91e82 | 9611 | static void |
95554aad | 9612 | load_full_comp_unit (struct dwarf2_per_cu_data *this_cu, |
58f0c718 | 9613 | bool skip_partial, |
95554aad | 9614 | enum language pretend_language) |
dee91e82 | 9615 | { |
3019eac3 | 9616 | gdb_assert (! this_cu->is_debug_types); |
c5b7e1cb | 9617 | |
58f0c718 | 9618 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, skip_partial, |
f4dc4d17 | 9619 | load_full_comp_unit_reader, &pretend_language); |
10b3939b DJ |
9620 | } |
9621 | ||
3da10d80 KS |
9622 | /* Add a DIE to the delayed physname list. */ |
9623 | ||
9624 | static void | |
9625 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
9626 | const char *name, struct die_info *die, | |
9627 | struct dwarf2_cu *cu) | |
9628 | { | |
9629 | struct delayed_method_info mi; | |
9630 | mi.type = type; | |
9631 | mi.fnfield_index = fnfield_index; | |
9632 | mi.index = index; | |
9633 | mi.name = name; | |
9634 | mi.die = die; | |
c89b44cd | 9635 | cu->method_list.push_back (mi); |
3da10d80 KS |
9636 | } |
9637 | ||
3693fdb3 PA |
9638 | /* Check whether [PHYSNAME, PHYSNAME+LEN) ends with a modifier like |
9639 | "const" / "volatile". If so, decrements LEN by the length of the | |
9640 | modifier and return true. Otherwise return false. */ | |
9641 | ||
9642 | template<size_t N> | |
9643 | static bool | |
9644 | check_modifier (const char *physname, size_t &len, const char (&mod)[N]) | |
9645 | { | |
9646 | size_t mod_len = sizeof (mod) - 1; | |
9647 | if (len > mod_len && startswith (physname + (len - mod_len), mod)) | |
9648 | { | |
9649 | len -= mod_len; | |
9650 | return true; | |
9651 | } | |
9652 | return false; | |
9653 | } | |
9654 | ||
3da10d80 KS |
9655 | /* Compute the physnames of any methods on the CU's method list. |
9656 | ||
9657 | The computation of method physnames is delayed in order to avoid the | |
9658 | (bad) condition that one of the method's formal parameters is of an as yet | |
9659 | incomplete type. */ | |
9660 | ||
9661 | static void | |
9662 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
9663 | { | |
3693fdb3 | 9664 | /* Only C++ delays computing physnames. */ |
c89b44cd | 9665 | if (cu->method_list.empty ()) |
3693fdb3 PA |
9666 | return; |
9667 | gdb_assert (cu->language == language_cplus); | |
9668 | ||
52941706 | 9669 | for (const delayed_method_info &mi : cu->method_list) |
3da10d80 | 9670 | { |
1d06ead6 | 9671 | const char *physname; |
3da10d80 | 9672 | struct fn_fieldlist *fn_flp |
c89b44cd TT |
9673 | = &TYPE_FN_FIELDLIST (mi.type, mi.fnfield_index); |
9674 | physname = dwarf2_physname (mi.name, mi.die, cu); | |
9675 | TYPE_FN_FIELD_PHYSNAME (fn_flp->fn_fields, mi.index) | |
005e54bb | 9676 | = physname ? physname : ""; |
3693fdb3 PA |
9677 | |
9678 | /* Since there's no tag to indicate whether a method is a | |
9679 | const/volatile overload, extract that information out of the | |
9680 | demangled name. */ | |
9681 | if (physname != NULL) | |
9682 | { | |
9683 | size_t len = strlen (physname); | |
9684 | ||
9685 | while (1) | |
9686 | { | |
9687 | if (physname[len] == ')') /* shortcut */ | |
9688 | break; | |
9689 | else if (check_modifier (physname, len, " const")) | |
c89b44cd | 9690 | TYPE_FN_FIELD_CONST (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 | 9691 | else if (check_modifier (physname, len, " volatile")) |
c89b44cd | 9692 | TYPE_FN_FIELD_VOLATILE (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 PA |
9693 | else |
9694 | break; | |
9695 | } | |
9696 | } | |
3da10d80 | 9697 | } |
c89b44cd TT |
9698 | |
9699 | /* The list is no longer needed. */ | |
9700 | cu->method_list.clear (); | |
3da10d80 KS |
9701 | } |
9702 | ||
a766d390 DE |
9703 | /* Go objects should be embedded in a DW_TAG_module DIE, |
9704 | and it's not clear if/how imported objects will appear. | |
9705 | To keep Go support simple until that's worked out, | |
9706 | go back through what we've read and create something usable. | |
9707 | We could do this while processing each DIE, and feels kinda cleaner, | |
9708 | but that way is more invasive. | |
9709 | This is to, for example, allow the user to type "p var" or "b main" | |
9710 | without having to specify the package name, and allow lookups | |
9711 | of module.object to work in contexts that use the expression | |
9712 | parser. */ | |
9713 | ||
9714 | static void | |
9715 | fixup_go_packaging (struct dwarf2_cu *cu) | |
9716 | { | |
9717 | char *package_name = NULL; | |
9718 | struct pending *list; | |
9719 | int i; | |
9720 | ||
9721 | for (list = global_symbols; list != NULL; list = list->next) | |
9722 | { | |
9723 | for (i = 0; i < list->nsyms; ++i) | |
9724 | { | |
9725 | struct symbol *sym = list->symbol[i]; | |
9726 | ||
9727 | if (SYMBOL_LANGUAGE (sym) == language_go | |
9728 | && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
9729 | { | |
9730 | char *this_package_name = go_symbol_package_name (sym); | |
9731 | ||
9732 | if (this_package_name == NULL) | |
9733 | continue; | |
9734 | if (package_name == NULL) | |
9735 | package_name = this_package_name; | |
9736 | else | |
9737 | { | |
518817b3 SM |
9738 | struct objfile *objfile |
9739 | = cu->per_cu->dwarf2_per_objfile->objfile; | |
a766d390 | 9740 | if (strcmp (package_name, this_package_name) != 0) |
b98664d3 | 9741 | complaint (_("Symtab %s has objects from two different Go packages: %s and %s"), |
08be3fe3 DE |
9742 | (symbol_symtab (sym) != NULL |
9743 | ? symtab_to_filename_for_display | |
9744 | (symbol_symtab (sym)) | |
e3b94546 | 9745 | : objfile_name (objfile)), |
a766d390 DE |
9746 | this_package_name, package_name); |
9747 | xfree (this_package_name); | |
9748 | } | |
9749 | } | |
9750 | } | |
9751 | } | |
9752 | ||
9753 | if (package_name != NULL) | |
9754 | { | |
518817b3 | 9755 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
34a68019 | 9756 | const char *saved_package_name |
224c3ddb SM |
9757 | = (const char *) obstack_copy0 (&objfile->per_bfd->storage_obstack, |
9758 | package_name, | |
9759 | strlen (package_name)); | |
19f392bc UW |
9760 | struct type *type = init_type (objfile, TYPE_CODE_MODULE, 0, |
9761 | saved_package_name); | |
a766d390 DE |
9762 | struct symbol *sym; |
9763 | ||
e623cf5d | 9764 | sym = allocate_symbol (objfile); |
f85f34ed | 9765 | SYMBOL_SET_LANGUAGE (sym, language_go, &objfile->objfile_obstack); |
86f62fd7 TT |
9766 | SYMBOL_SET_NAMES (sym, saved_package_name, |
9767 | strlen (saved_package_name), 0, objfile); | |
a766d390 DE |
9768 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, |
9769 | e.g., "main" finds the "main" module and not C's main(). */ | |
9770 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
f1e6e072 | 9771 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
a766d390 DE |
9772 | SYMBOL_TYPE (sym) = type; |
9773 | ||
9774 | add_symbol_to_list (sym, &global_symbols); | |
9775 | ||
9776 | xfree (package_name); | |
9777 | } | |
9778 | } | |
9779 | ||
c9317f21 TT |
9780 | /* Allocate a fully-qualified name consisting of the two parts on the |
9781 | obstack. */ | |
9782 | ||
9783 | static const char * | |
9784 | rust_fully_qualify (struct obstack *obstack, const char *p1, const char *p2) | |
9785 | { | |
9786 | return obconcat (obstack, p1, "::", p2, (char *) NULL); | |
9787 | } | |
9788 | ||
9789 | /* A helper that allocates a struct discriminant_info to attach to a | |
9790 | union type. */ | |
9791 | ||
9792 | static struct discriminant_info * | |
9793 | alloc_discriminant_info (struct type *type, int discriminant_index, | |
9794 | int default_index) | |
9795 | { | |
9796 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_UNION); | |
c7b15a66 TT |
9797 | gdb_assert (discriminant_index == -1 |
9798 | || (discriminant_index >= 0 | |
9799 | && discriminant_index < TYPE_NFIELDS (type))); | |
c9317f21 | 9800 | gdb_assert (default_index == -1 |
c7b15a66 | 9801 | || (default_index >= 0 && default_index < TYPE_NFIELDS (type))); |
c9317f21 TT |
9802 | |
9803 | TYPE_FLAG_DISCRIMINATED_UNION (type) = 1; | |
9804 | ||
9805 | struct discriminant_info *disc | |
9806 | = ((struct discriminant_info *) | |
9807 | TYPE_ZALLOC (type, | |
9808 | offsetof (struct discriminant_info, discriminants) | |
9809 | + TYPE_NFIELDS (type) * sizeof (disc->discriminants[0]))); | |
9810 | disc->default_index = default_index; | |
9811 | disc->discriminant_index = discriminant_index; | |
9812 | ||
9813 | struct dynamic_prop prop; | |
9814 | prop.kind = PROP_UNDEFINED; | |
9815 | prop.data.baton = disc; | |
9816 | ||
9817 | add_dyn_prop (DYN_PROP_DISCRIMINATED, prop, type); | |
9818 | ||
9819 | return disc; | |
9820 | } | |
9821 | ||
9822 | /* Some versions of rustc emitted enums in an unusual way. | |
9823 | ||
9824 | Ordinary enums were emitted as unions. The first element of each | |
9825 | structure in the union was named "RUST$ENUM$DISR". This element | |
9826 | held the discriminant. | |
9827 | ||
9828 | These versions of Rust also implemented the "non-zero" | |
9829 | optimization. When the enum had two values, and one is empty and | |
9830 | the other holds a pointer that cannot be zero, the pointer is used | |
9831 | as the discriminant, with a zero value meaning the empty variant. | |
9832 | Here, the union's first member is of the form | |
9833 | RUST$ENCODED$ENUM$<fieldno>$<fieldno>$...$<variantname> | |
9834 | where the fieldnos are the indices of the fields that should be | |
9835 | traversed in order to find the field (which may be several fields deep) | |
9836 | and the variantname is the name of the variant of the case when the | |
9837 | field is zero. | |
9838 | ||
9839 | This function recognizes whether TYPE is of one of these forms, | |
9840 | and, if so, smashes it to be a variant type. */ | |
9841 | ||
9842 | static void | |
9843 | quirk_rust_enum (struct type *type, struct objfile *objfile) | |
9844 | { | |
9845 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_UNION); | |
9846 | ||
9847 | /* We don't need to deal with empty enums. */ | |
9848 | if (TYPE_NFIELDS (type) == 0) | |
9849 | return; | |
9850 | ||
9851 | #define RUST_ENUM_PREFIX "RUST$ENCODED$ENUM$" | |
9852 | if (TYPE_NFIELDS (type) == 1 | |
9853 | && startswith (TYPE_FIELD_NAME (type, 0), RUST_ENUM_PREFIX)) | |
9854 | { | |
9855 | const char *name = TYPE_FIELD_NAME (type, 0) + strlen (RUST_ENUM_PREFIX); | |
9856 | ||
9857 | /* Decode the field name to find the offset of the | |
9858 | discriminant. */ | |
9859 | ULONGEST bit_offset = 0; | |
9860 | struct type *field_type = TYPE_FIELD_TYPE (type, 0); | |
9861 | while (name[0] >= '0' && name[0] <= '9') | |
9862 | { | |
9863 | char *tail; | |
9864 | unsigned long index = strtoul (name, &tail, 10); | |
9865 | name = tail; | |
9866 | if (*name != '$' | |
9867 | || index >= TYPE_NFIELDS (field_type) | |
9868 | || (TYPE_FIELD_LOC_KIND (field_type, index) | |
9869 | != FIELD_LOC_KIND_BITPOS)) | |
9870 | { | |
b98664d3 | 9871 | complaint (_("Could not parse Rust enum encoding string \"%s\"" |
c9317f21 TT |
9872 | "[in module %s]"), |
9873 | TYPE_FIELD_NAME (type, 0), | |
9874 | objfile_name (objfile)); | |
9875 | return; | |
9876 | } | |
9877 | ++name; | |
9878 | ||
9879 | bit_offset += TYPE_FIELD_BITPOS (field_type, index); | |
9880 | field_type = TYPE_FIELD_TYPE (field_type, index); | |
9881 | } | |
9882 | ||
9883 | /* Make a union to hold the variants. */ | |
9884 | struct type *union_type = alloc_type (objfile); | |
9885 | TYPE_CODE (union_type) = TYPE_CODE_UNION; | |
9886 | TYPE_NFIELDS (union_type) = 3; | |
9887 | TYPE_FIELDS (union_type) | |
9888 | = (struct field *) TYPE_ZALLOC (type, 3 * sizeof (struct field)); | |
9889 | TYPE_LENGTH (union_type) = TYPE_LENGTH (type); | |
2b4424c3 | 9890 | set_type_align (union_type, TYPE_RAW_ALIGN (type)); |
c9317f21 TT |
9891 | |
9892 | /* Put the discriminant must at index 0. */ | |
9893 | TYPE_FIELD_TYPE (union_type, 0) = field_type; | |
9894 | TYPE_FIELD_ARTIFICIAL (union_type, 0) = 1; | |
9895 | TYPE_FIELD_NAME (union_type, 0) = "<<discriminant>>"; | |
9896 | SET_FIELD_BITPOS (TYPE_FIELD (union_type, 0), bit_offset); | |
9897 | ||
9898 | /* The order of fields doesn't really matter, so put the real | |
9899 | field at index 1 and the data-less field at index 2. */ | |
9900 | struct discriminant_info *disc | |
9901 | = alloc_discriminant_info (union_type, 0, 1); | |
9902 | TYPE_FIELD (union_type, 1) = TYPE_FIELD (type, 0); | |
9903 | TYPE_FIELD_NAME (union_type, 1) | |
9904 | = rust_last_path_segment (TYPE_NAME (TYPE_FIELD_TYPE (union_type, 1))); | |
9905 | TYPE_NAME (TYPE_FIELD_TYPE (union_type, 1)) | |
9906 | = rust_fully_qualify (&objfile->objfile_obstack, TYPE_NAME (type), | |
9907 | TYPE_FIELD_NAME (union_type, 1)); | |
9908 | ||
9909 | const char *dataless_name | |
9910 | = rust_fully_qualify (&objfile->objfile_obstack, TYPE_NAME (type), | |
9911 | name); | |
9912 | struct type *dataless_type = init_type (objfile, TYPE_CODE_VOID, 0, | |
9913 | dataless_name); | |
9914 | TYPE_FIELD_TYPE (union_type, 2) = dataless_type; | |
9915 | /* NAME points into the original discriminant name, which | |
9916 | already has the correct lifetime. */ | |
9917 | TYPE_FIELD_NAME (union_type, 2) = name; | |
9918 | SET_FIELD_BITPOS (TYPE_FIELD (union_type, 2), 0); | |
9919 | disc->discriminants[2] = 0; | |
9920 | ||
9921 | /* Smash this type to be a structure type. We have to do this | |
9922 | because the type has already been recorded. */ | |
9923 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
9924 | TYPE_NFIELDS (type) = 1; | |
9925 | TYPE_FIELDS (type) | |
9926 | = (struct field *) TYPE_ZALLOC (type, sizeof (struct field)); | |
9927 | ||
9928 | /* Install the variant part. */ | |
9929 | TYPE_FIELD_TYPE (type, 0) = union_type; | |
9930 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), 0); | |
9931 | TYPE_FIELD_NAME (type, 0) = "<<variants>>"; | |
9932 | } | |
9933 | else if (TYPE_NFIELDS (type) == 1) | |
9934 | { | |
9935 | /* We assume that a union with a single field is a univariant | |
9936 | enum. */ | |
9937 | /* Smash this type to be a structure type. We have to do this | |
9938 | because the type has already been recorded. */ | |
9939 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
9940 | ||
9941 | /* Make a union to hold the variants. */ | |
9942 | struct type *union_type = alloc_type (objfile); | |
9943 | TYPE_CODE (union_type) = TYPE_CODE_UNION; | |
9944 | TYPE_NFIELDS (union_type) = TYPE_NFIELDS (type); | |
9945 | TYPE_LENGTH (union_type) = TYPE_LENGTH (type); | |
2b4424c3 | 9946 | set_type_align (union_type, TYPE_RAW_ALIGN (type)); |
c9317f21 TT |
9947 | TYPE_FIELDS (union_type) = TYPE_FIELDS (type); |
9948 | ||
9949 | struct type *field_type = TYPE_FIELD_TYPE (union_type, 0); | |
9950 | const char *variant_name | |
9951 | = rust_last_path_segment (TYPE_NAME (field_type)); | |
9952 | TYPE_FIELD_NAME (union_type, 0) = variant_name; | |
9953 | TYPE_NAME (field_type) | |
9954 | = rust_fully_qualify (&objfile->objfile_obstack, | |
c7b15a66 | 9955 | TYPE_NAME (type), variant_name); |
c9317f21 TT |
9956 | |
9957 | /* Install the union in the outer struct type. */ | |
9958 | TYPE_NFIELDS (type) = 1; | |
9959 | TYPE_FIELDS (type) | |
9960 | = (struct field *) TYPE_ZALLOC (union_type, sizeof (struct field)); | |
9961 | TYPE_FIELD_TYPE (type, 0) = union_type; | |
9962 | TYPE_FIELD_NAME (type, 0) = "<<variants>>"; | |
9963 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), 0); | |
9964 | ||
9965 | alloc_discriminant_info (union_type, -1, 0); | |
9966 | } | |
9967 | else | |
9968 | { | |
9969 | struct type *disr_type = nullptr; | |
9970 | for (int i = 0; i < TYPE_NFIELDS (type); ++i) | |
9971 | { | |
9972 | disr_type = TYPE_FIELD_TYPE (type, i); | |
9973 | ||
a037790e TT |
9974 | if (TYPE_CODE (disr_type) != TYPE_CODE_STRUCT) |
9975 | { | |
9976 | /* All fields of a true enum will be structs. */ | |
9977 | return; | |
9978 | } | |
9979 | else if (TYPE_NFIELDS (disr_type) == 0) | |
c9317f21 TT |
9980 | { |
9981 | /* Could be data-less variant, so keep going. */ | |
a037790e | 9982 | disr_type = nullptr; |
c9317f21 TT |
9983 | } |
9984 | else if (strcmp (TYPE_FIELD_NAME (disr_type, 0), | |
9985 | "RUST$ENUM$DISR") != 0) | |
9986 | { | |
9987 | /* Not a Rust enum. */ | |
9988 | return; | |
9989 | } | |
9990 | else | |
9991 | { | |
9992 | /* Found one. */ | |
9993 | break; | |
9994 | } | |
9995 | } | |
9996 | ||
9997 | /* If we got here without a discriminant, then it's probably | |
9998 | just a union. */ | |
9999 | if (disr_type == nullptr) | |
10000 | return; | |
10001 | ||
10002 | /* Smash this type to be a structure type. We have to do this | |
10003 | because the type has already been recorded. */ | |
10004 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
10005 | ||
10006 | /* Make a union to hold the variants. */ | |
10007 | struct field *disr_field = &TYPE_FIELD (disr_type, 0); | |
10008 | struct type *union_type = alloc_type (objfile); | |
10009 | TYPE_CODE (union_type) = TYPE_CODE_UNION; | |
10010 | TYPE_NFIELDS (union_type) = 1 + TYPE_NFIELDS (type); | |
10011 | TYPE_LENGTH (union_type) = TYPE_LENGTH (type); | |
2b4424c3 | 10012 | set_type_align (union_type, TYPE_RAW_ALIGN (type)); |
c9317f21 TT |
10013 | TYPE_FIELDS (union_type) |
10014 | = (struct field *) TYPE_ZALLOC (union_type, | |
10015 | (TYPE_NFIELDS (union_type) | |
10016 | * sizeof (struct field))); | |
10017 | ||
10018 | memcpy (TYPE_FIELDS (union_type) + 1, TYPE_FIELDS (type), | |
10019 | TYPE_NFIELDS (type) * sizeof (struct field)); | |
10020 | ||
10021 | /* Install the discriminant at index 0 in the union. */ | |
10022 | TYPE_FIELD (union_type, 0) = *disr_field; | |
10023 | TYPE_FIELD_ARTIFICIAL (union_type, 0) = 1; | |
10024 | TYPE_FIELD_NAME (union_type, 0) = "<<discriminant>>"; | |
10025 | ||
10026 | /* Install the union in the outer struct type. */ | |
10027 | TYPE_FIELD_TYPE (type, 0) = union_type; | |
10028 | TYPE_FIELD_NAME (type, 0) = "<<variants>>"; | |
10029 | TYPE_NFIELDS (type) = 1; | |
10030 | ||
10031 | /* Set the size and offset of the union type. */ | |
10032 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), 0); | |
10033 | ||
10034 | /* We need a way to find the correct discriminant given a | |
10035 | variant name. For convenience we build a map here. */ | |
10036 | struct type *enum_type = FIELD_TYPE (*disr_field); | |
10037 | std::unordered_map<std::string, ULONGEST> discriminant_map; | |
10038 | for (int i = 0; i < TYPE_NFIELDS (enum_type); ++i) | |
10039 | { | |
10040 | if (TYPE_FIELD_LOC_KIND (enum_type, i) == FIELD_LOC_KIND_ENUMVAL) | |
10041 | { | |
10042 | const char *name | |
10043 | = rust_last_path_segment (TYPE_FIELD_NAME (enum_type, i)); | |
10044 | discriminant_map[name] = TYPE_FIELD_ENUMVAL (enum_type, i); | |
10045 | } | |
10046 | } | |
10047 | ||
10048 | int n_fields = TYPE_NFIELDS (union_type); | |
10049 | struct discriminant_info *disc | |
10050 | = alloc_discriminant_info (union_type, 0, -1); | |
10051 | /* Skip the discriminant here. */ | |
10052 | for (int i = 1; i < n_fields; ++i) | |
10053 | { | |
10054 | /* Find the final word in the name of this variant's type. | |
10055 | That name can be used to look up the correct | |
10056 | discriminant. */ | |
10057 | const char *variant_name | |
10058 | = rust_last_path_segment (TYPE_NAME (TYPE_FIELD_TYPE (union_type, | |
10059 | i))); | |
10060 | ||
10061 | auto iter = discriminant_map.find (variant_name); | |
10062 | if (iter != discriminant_map.end ()) | |
10063 | disc->discriminants[i] = iter->second; | |
10064 | ||
bedda9ac | 10065 | /* Remove the discriminant field, if it exists. */ |
c9317f21 | 10066 | struct type *sub_type = TYPE_FIELD_TYPE (union_type, i); |
bedda9ac TT |
10067 | if (TYPE_NFIELDS (sub_type) > 0) |
10068 | { | |
10069 | --TYPE_NFIELDS (sub_type); | |
10070 | ++TYPE_FIELDS (sub_type); | |
10071 | } | |
c9317f21 TT |
10072 | TYPE_FIELD_NAME (union_type, i) = variant_name; |
10073 | TYPE_NAME (sub_type) | |
10074 | = rust_fully_qualify (&objfile->objfile_obstack, | |
10075 | TYPE_NAME (type), variant_name); | |
10076 | } | |
10077 | } | |
10078 | } | |
10079 | ||
10080 | /* Rewrite some Rust unions to be structures with variants parts. */ | |
10081 | ||
10082 | static void | |
10083 | rust_union_quirks (struct dwarf2_cu *cu) | |
10084 | { | |
10085 | gdb_assert (cu->language == language_rust); | |
52941706 SM |
10086 | for (type *type_ : cu->rust_unions) |
10087 | quirk_rust_enum (type_, cu->per_cu->dwarf2_per_objfile->objfile); | |
2d79090e TT |
10088 | /* We don't need this any more. */ |
10089 | cu->rust_unions.clear (); | |
c9317f21 TT |
10090 | } |
10091 | ||
95554aad TT |
10092 | /* Return the symtab for PER_CU. This works properly regardless of |
10093 | whether we're using the index or psymtabs. */ | |
10094 | ||
43f3e411 DE |
10095 | static struct compunit_symtab * |
10096 | get_compunit_symtab (struct dwarf2_per_cu_data *per_cu) | |
95554aad | 10097 | { |
ed2dc618 | 10098 | return (per_cu->dwarf2_per_objfile->using_index |
43f3e411 DE |
10099 | ? per_cu->v.quick->compunit_symtab |
10100 | : per_cu->v.psymtab->compunit_symtab); | |
95554aad TT |
10101 | } |
10102 | ||
10103 | /* A helper function for computing the list of all symbol tables | |
10104 | included by PER_CU. */ | |
10105 | ||
10106 | static void | |
43f3e411 | 10107 | recursively_compute_inclusions (VEC (compunit_symtab_ptr) **result, |
ec94af83 | 10108 | htab_t all_children, htab_t all_type_symtabs, |
f9125b6c | 10109 | struct dwarf2_per_cu_data *per_cu, |
43f3e411 | 10110 | struct compunit_symtab *immediate_parent) |
95554aad TT |
10111 | { |
10112 | void **slot; | |
10113 | int ix; | |
43f3e411 | 10114 | struct compunit_symtab *cust; |
95554aad TT |
10115 | struct dwarf2_per_cu_data *iter; |
10116 | ||
10117 | slot = htab_find_slot (all_children, per_cu, INSERT); | |
10118 | if (*slot != NULL) | |
10119 | { | |
10120 | /* This inclusion and its children have been processed. */ | |
10121 | return; | |
10122 | } | |
10123 | ||
10124 | *slot = per_cu; | |
10125 | /* Only add a CU if it has a symbol table. */ | |
43f3e411 DE |
10126 | cust = get_compunit_symtab (per_cu); |
10127 | if (cust != NULL) | |
ec94af83 DE |
10128 | { |
10129 | /* If this is a type unit only add its symbol table if we haven't | |
10130 | seen it yet (type unit per_cu's can share symtabs). */ | |
10131 | if (per_cu->is_debug_types) | |
10132 | { | |
43f3e411 | 10133 | slot = htab_find_slot (all_type_symtabs, cust, INSERT); |
ec94af83 DE |
10134 | if (*slot == NULL) |
10135 | { | |
43f3e411 DE |
10136 | *slot = cust; |
10137 | VEC_safe_push (compunit_symtab_ptr, *result, cust); | |
10138 | if (cust->user == NULL) | |
10139 | cust->user = immediate_parent; | |
ec94af83 DE |
10140 | } |
10141 | } | |
10142 | else | |
f9125b6c | 10143 | { |
43f3e411 DE |
10144 | VEC_safe_push (compunit_symtab_ptr, *result, cust); |
10145 | if (cust->user == NULL) | |
10146 | cust->user = immediate_parent; | |
f9125b6c | 10147 | } |
ec94af83 | 10148 | } |
95554aad TT |
10149 | |
10150 | for (ix = 0; | |
796a7ff8 | 10151 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, ix, iter); |
95554aad | 10152 | ++ix) |
ec94af83 DE |
10153 | { |
10154 | recursively_compute_inclusions (result, all_children, | |
43f3e411 | 10155 | all_type_symtabs, iter, cust); |
ec94af83 | 10156 | } |
95554aad TT |
10157 | } |
10158 | ||
43f3e411 | 10159 | /* Compute the compunit_symtab 'includes' fields for the compunit_symtab of |
95554aad TT |
10160 | PER_CU. */ |
10161 | ||
10162 | static void | |
43f3e411 | 10163 | compute_compunit_symtab_includes (struct dwarf2_per_cu_data *per_cu) |
95554aad | 10164 | { |
f4dc4d17 DE |
10165 | gdb_assert (! per_cu->is_debug_types); |
10166 | ||
796a7ff8 | 10167 | if (!VEC_empty (dwarf2_per_cu_ptr, per_cu->imported_symtabs)) |
95554aad TT |
10168 | { |
10169 | int ix, len; | |
ec94af83 | 10170 | struct dwarf2_per_cu_data *per_cu_iter; |
43f3e411 DE |
10171 | struct compunit_symtab *compunit_symtab_iter; |
10172 | VEC (compunit_symtab_ptr) *result_symtabs = NULL; | |
ec94af83 | 10173 | htab_t all_children, all_type_symtabs; |
43f3e411 | 10174 | struct compunit_symtab *cust = get_compunit_symtab (per_cu); |
95554aad TT |
10175 | |
10176 | /* If we don't have a symtab, we can just skip this case. */ | |
43f3e411 | 10177 | if (cust == NULL) |
95554aad TT |
10178 | return; |
10179 | ||
10180 | all_children = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, | |
10181 | NULL, xcalloc, xfree); | |
ec94af83 DE |
10182 | all_type_symtabs = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
10183 | NULL, xcalloc, xfree); | |
95554aad TT |
10184 | |
10185 | for (ix = 0; | |
796a7ff8 | 10186 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, |
ec94af83 | 10187 | ix, per_cu_iter); |
95554aad | 10188 | ++ix) |
ec94af83 DE |
10189 | { |
10190 | recursively_compute_inclusions (&result_symtabs, all_children, | |
f9125b6c | 10191 | all_type_symtabs, per_cu_iter, |
43f3e411 | 10192 | cust); |
ec94af83 | 10193 | } |
95554aad | 10194 | |
ec94af83 | 10195 | /* Now we have a transitive closure of all the included symtabs. */ |
43f3e411 DE |
10196 | len = VEC_length (compunit_symtab_ptr, result_symtabs); |
10197 | cust->includes | |
ed2dc618 | 10198 | = XOBNEWVEC (&per_cu->dwarf2_per_objfile->objfile->objfile_obstack, |
8d749320 | 10199 | struct compunit_symtab *, len + 1); |
95554aad | 10200 | for (ix = 0; |
43f3e411 DE |
10201 | VEC_iterate (compunit_symtab_ptr, result_symtabs, ix, |
10202 | compunit_symtab_iter); | |
95554aad | 10203 | ++ix) |
43f3e411 DE |
10204 | cust->includes[ix] = compunit_symtab_iter; |
10205 | cust->includes[len] = NULL; | |
95554aad | 10206 | |
43f3e411 | 10207 | VEC_free (compunit_symtab_ptr, result_symtabs); |
95554aad | 10208 | htab_delete (all_children); |
ec94af83 | 10209 | htab_delete (all_type_symtabs); |
95554aad TT |
10210 | } |
10211 | } | |
10212 | ||
10213 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
10214 | read. */ | |
10215 | ||
10216 | static void | |
ed2dc618 | 10217 | process_cu_includes (struct dwarf2_per_objfile *dwarf2_per_objfile) |
95554aad | 10218 | { |
71b73764 | 10219 | for (dwarf2_per_cu_data *iter : dwarf2_per_objfile->just_read_cus) |
f4dc4d17 DE |
10220 | { |
10221 | if (! iter->is_debug_types) | |
43f3e411 | 10222 | compute_compunit_symtab_includes (iter); |
f4dc4d17 | 10223 | } |
95554aad | 10224 | |
c5d0225d | 10225 | dwarf2_per_objfile->just_read_cus.clear (); |
95554aad TT |
10226 | } |
10227 | ||
9cdd5dbd | 10228 | /* Generate full symbol information for PER_CU, whose DIEs have |
10b3939b DJ |
10229 | already been loaded into memory. */ |
10230 | ||
10231 | static void | |
95554aad TT |
10232 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu, |
10233 | enum language pretend_language) | |
10b3939b | 10234 | { |
10b3939b | 10235 | struct dwarf2_cu *cu = per_cu->cu; |
ed2dc618 SM |
10236 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
10237 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
3e29f34a | 10238 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
10b3939b | 10239 | CORE_ADDR lowpc, highpc; |
43f3e411 | 10240 | struct compunit_symtab *cust; |
10b3939b | 10241 | CORE_ADDR baseaddr; |
4359dff1 | 10242 | struct block *static_block; |
3e29f34a | 10243 | CORE_ADDR addr; |
10b3939b DJ |
10244 | |
10245 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
10246 | ||
10b3939b | 10247 | buildsym_init (); |
33c7c59d | 10248 | scoped_free_pendings free_pending; |
c89b44cd TT |
10249 | |
10250 | /* Clear the list here in case something was left over. */ | |
10251 | cu->method_list.clear (); | |
10b3939b DJ |
10252 | |
10253 | cu->list_in_scope = &file_symbols; | |
c906108c | 10254 | |
95554aad TT |
10255 | cu->language = pretend_language; |
10256 | cu->language_defn = language_def (cu->language); | |
10257 | ||
c906108c | 10258 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 10259 | process_die (cu->dies, cu); |
c906108c | 10260 | |
a766d390 DE |
10261 | /* For now fudge the Go package. */ |
10262 | if (cu->language == language_go) | |
10263 | fixup_go_packaging (cu); | |
10264 | ||
3da10d80 KS |
10265 | /* Now that we have processed all the DIEs in the CU, all the types |
10266 | should be complete, and it should now be safe to compute all of the | |
10267 | physnames. */ | |
10268 | compute_delayed_physnames (cu); | |
3da10d80 | 10269 | |
c9317f21 TT |
10270 | if (cu->language == language_rust) |
10271 | rust_union_quirks (cu); | |
10272 | ||
fae299cd DC |
10273 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
10274 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
10275 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 10276 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 10277 | |
3e29f34a MR |
10278 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); |
10279 | static_block = end_symtab_get_static_block (addr, 0, 1); | |
4359dff1 JK |
10280 | |
10281 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
10282 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
10283 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
10284 | addrmap to help ensure it has an accurate map of pc values belonging to | |
10285 | this comp unit. */ | |
10286 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
10287 | ||
43f3e411 DE |
10288 | cust = end_symtab_from_static_block (static_block, |
10289 | SECT_OFF_TEXT (objfile), 0); | |
c906108c | 10290 | |
43f3e411 | 10291 | if (cust != NULL) |
c906108c | 10292 | { |
df15bd07 | 10293 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 10294 | |
8be455d7 JK |
10295 | /* Set symtab language to language from DW_AT_language. If the |
10296 | compilation is from a C file generated by language preprocessors, do | |
10297 | not set the language if it was already deduced by start_subfile. */ | |
43f3e411 | 10298 | if (!(cu->language == language_c |
40e3ad0e | 10299 | && COMPUNIT_FILETABS (cust)->language != language_unknown)) |
43f3e411 | 10300 | COMPUNIT_FILETABS (cust)->language = cu->language; |
8be455d7 JK |
10301 | |
10302 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
10303 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
10304 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
10305 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
10306 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
10307 | |
10308 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
10309 | needed, it would be wrong due to missing DW_AT_producer there. | |
10310 | ||
10311 | Still one can confuse GDB by using non-standard GCC compilation | |
10312 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
10313 | */ | |
ab260dad | 10314 | if (cu->has_loclist && gcc_4_minor >= 5) |
43f3e411 | 10315 | cust->locations_valid = 1; |
e0d00bc7 JK |
10316 | |
10317 | if (gcc_4_minor >= 5) | |
43f3e411 | 10318 | cust->epilogue_unwind_valid = 1; |
96408a79 | 10319 | |
43f3e411 | 10320 | cust->call_site_htab = cu->call_site_htab; |
c906108c | 10321 | } |
9291a0cd TT |
10322 | |
10323 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 10324 | per_cu->v.quick->compunit_symtab = cust; |
9291a0cd TT |
10325 | else |
10326 | { | |
10327 | struct partial_symtab *pst = per_cu->v.psymtab; | |
43f3e411 | 10328 | pst->compunit_symtab = cust; |
9291a0cd TT |
10329 | pst->readin = 1; |
10330 | } | |
c906108c | 10331 | |
95554aad | 10332 | /* Push it for inclusion processing later. */ |
c5d0225d | 10333 | dwarf2_per_objfile->just_read_cus.push_back (per_cu); |
f4dc4d17 | 10334 | } |
45cfd468 | 10335 | |
f4dc4d17 DE |
10336 | /* Generate full symbol information for type unit PER_CU, whose DIEs have |
10337 | already been loaded into memory. */ | |
10338 | ||
10339 | static void | |
10340 | process_full_type_unit (struct dwarf2_per_cu_data *per_cu, | |
10341 | enum language pretend_language) | |
10342 | { | |
10343 | struct dwarf2_cu *cu = per_cu->cu; | |
ed2dc618 SM |
10344 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
10345 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
43f3e411 | 10346 | struct compunit_symtab *cust; |
0186c6a7 DE |
10347 | struct signatured_type *sig_type; |
10348 | ||
10349 | gdb_assert (per_cu->is_debug_types); | |
10350 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 DE |
10351 | |
10352 | buildsym_init (); | |
33c7c59d | 10353 | scoped_free_pendings free_pending; |
c89b44cd TT |
10354 | |
10355 | /* Clear the list here in case something was left over. */ | |
10356 | cu->method_list.clear (); | |
f4dc4d17 DE |
10357 | |
10358 | cu->list_in_scope = &file_symbols; | |
10359 | ||
10360 | cu->language = pretend_language; | |
10361 | cu->language_defn = language_def (cu->language); | |
10362 | ||
10363 | /* The symbol tables are set up in read_type_unit_scope. */ | |
10364 | process_die (cu->dies, cu); | |
10365 | ||
10366 | /* For now fudge the Go package. */ | |
10367 | if (cu->language == language_go) | |
10368 | fixup_go_packaging (cu); | |
10369 | ||
10370 | /* Now that we have processed all the DIEs in the CU, all the types | |
10371 | should be complete, and it should now be safe to compute all of the | |
10372 | physnames. */ | |
10373 | compute_delayed_physnames (cu); | |
f4dc4d17 | 10374 | |
c9317f21 TT |
10375 | if (cu->language == language_rust) |
10376 | rust_union_quirks (cu); | |
10377 | ||
f4dc4d17 DE |
10378 | /* TUs share symbol tables. |
10379 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
10380 | of it with end_expandable_symtab. Otherwise, complete the addition of |
10381 | this TU's symbols to the existing symtab. */ | |
43f3e411 | 10382 | if (sig_type->type_unit_group->compunit_symtab == NULL) |
45cfd468 | 10383 | { |
43f3e411 DE |
10384 | cust = end_expandable_symtab (0, SECT_OFF_TEXT (objfile)); |
10385 | sig_type->type_unit_group->compunit_symtab = cust; | |
f4dc4d17 | 10386 | |
43f3e411 | 10387 | if (cust != NULL) |
f4dc4d17 DE |
10388 | { |
10389 | /* Set symtab language to language from DW_AT_language. If the | |
10390 | compilation is from a C file generated by language preprocessors, | |
10391 | do not set the language if it was already deduced by | |
10392 | start_subfile. */ | |
43f3e411 DE |
10393 | if (!(cu->language == language_c |
10394 | && COMPUNIT_FILETABS (cust)->language != language_c)) | |
10395 | COMPUNIT_FILETABS (cust)->language = cu->language; | |
f4dc4d17 DE |
10396 | } |
10397 | } | |
10398 | else | |
10399 | { | |
0ab9ce85 | 10400 | augment_type_symtab (); |
43f3e411 | 10401 | cust = sig_type->type_unit_group->compunit_symtab; |
f4dc4d17 DE |
10402 | } |
10403 | ||
10404 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 10405 | per_cu->v.quick->compunit_symtab = cust; |
f4dc4d17 DE |
10406 | else |
10407 | { | |
10408 | struct partial_symtab *pst = per_cu->v.psymtab; | |
43f3e411 | 10409 | pst->compunit_symtab = cust; |
f4dc4d17 | 10410 | pst->readin = 1; |
45cfd468 | 10411 | } |
c906108c SS |
10412 | } |
10413 | ||
95554aad TT |
10414 | /* Process an imported unit DIE. */ |
10415 | ||
10416 | static void | |
10417 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
10418 | { | |
10419 | struct attribute *attr; | |
10420 | ||
f4dc4d17 DE |
10421 | /* For now we don't handle imported units in type units. */ |
10422 | if (cu->per_cu->is_debug_types) | |
10423 | { | |
10424 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
10425 | " supported in type units [in module %s]"), | |
518817b3 | 10426 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
f4dc4d17 DE |
10427 | } |
10428 | ||
95554aad TT |
10429 | attr = dwarf2_attr (die, DW_AT_import, cu); |
10430 | if (attr != NULL) | |
10431 | { | |
9c541725 PA |
10432 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
10433 | bool is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); | |
10434 | dwarf2_per_cu_data *per_cu | |
e3b94546 | 10435 | = dwarf2_find_containing_comp_unit (sect_off, is_dwz, |
518817b3 | 10436 | cu->per_cu->dwarf2_per_objfile); |
95554aad | 10437 | |
69d751e3 | 10438 | /* If necessary, add it to the queue and load its DIEs. */ |
95554aad | 10439 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
58f0c718 | 10440 | load_full_comp_unit (per_cu, false, cu->language); |
95554aad | 10441 | |
796a7ff8 | 10442 | VEC_safe_push (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, |
95554aad TT |
10443 | per_cu); |
10444 | } | |
10445 | } | |
10446 | ||
4c8aa72d PA |
10447 | /* RAII object that represents a process_die scope: i.e., |
10448 | starts/finishes processing a DIE. */ | |
10449 | class process_die_scope | |
adde2bff | 10450 | { |
4c8aa72d PA |
10451 | public: |
10452 | process_die_scope (die_info *die, dwarf2_cu *cu) | |
10453 | : m_die (die), m_cu (cu) | |
10454 | { | |
10455 | /* We should only be processing DIEs not already in process. */ | |
10456 | gdb_assert (!m_die->in_process); | |
10457 | m_die->in_process = true; | |
10458 | } | |
8c3cb9fa | 10459 | |
4c8aa72d PA |
10460 | ~process_die_scope () |
10461 | { | |
10462 | m_die->in_process = false; | |
10463 | ||
10464 | /* If we're done processing the DIE for the CU that owns the line | |
10465 | header, we don't need the line header anymore. */ | |
10466 | if (m_cu->line_header_die_owner == m_die) | |
10467 | { | |
10468 | delete m_cu->line_header; | |
10469 | m_cu->line_header = NULL; | |
10470 | m_cu->line_header_die_owner = NULL; | |
10471 | } | |
10472 | } | |
10473 | ||
10474 | private: | |
10475 | die_info *m_die; | |
10476 | dwarf2_cu *m_cu; | |
10477 | }; | |
adde2bff | 10478 | |
c906108c SS |
10479 | /* Process a die and its children. */ |
10480 | ||
10481 | static void | |
e7c27a73 | 10482 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10483 | { |
4c8aa72d | 10484 | process_die_scope scope (die, cu); |
adde2bff | 10485 | |
c906108c SS |
10486 | switch (die->tag) |
10487 | { | |
10488 | case DW_TAG_padding: | |
10489 | break; | |
10490 | case DW_TAG_compile_unit: | |
95554aad | 10491 | case DW_TAG_partial_unit: |
e7c27a73 | 10492 | read_file_scope (die, cu); |
c906108c | 10493 | break; |
348e048f DE |
10494 | case DW_TAG_type_unit: |
10495 | read_type_unit_scope (die, cu); | |
10496 | break; | |
c906108c | 10497 | case DW_TAG_subprogram: |
c906108c | 10498 | case DW_TAG_inlined_subroutine: |
edb3359d | 10499 | read_func_scope (die, cu); |
c906108c SS |
10500 | break; |
10501 | case DW_TAG_lexical_block: | |
14898363 L |
10502 | case DW_TAG_try_block: |
10503 | case DW_TAG_catch_block: | |
e7c27a73 | 10504 | read_lexical_block_scope (die, cu); |
c906108c | 10505 | break; |
216f72a1 | 10506 | case DW_TAG_call_site: |
96408a79 SA |
10507 | case DW_TAG_GNU_call_site: |
10508 | read_call_site_scope (die, cu); | |
10509 | break; | |
c906108c | 10510 | case DW_TAG_class_type: |
680b30c7 | 10511 | case DW_TAG_interface_type: |
c906108c SS |
10512 | case DW_TAG_structure_type: |
10513 | case DW_TAG_union_type: | |
134d01f1 | 10514 | process_structure_scope (die, cu); |
c906108c SS |
10515 | break; |
10516 | case DW_TAG_enumeration_type: | |
134d01f1 | 10517 | process_enumeration_scope (die, cu); |
c906108c | 10518 | break; |
134d01f1 | 10519 | |
f792889a DJ |
10520 | /* These dies have a type, but processing them does not create |
10521 | a symbol or recurse to process the children. Therefore we can | |
10522 | read them on-demand through read_type_die. */ | |
c906108c | 10523 | case DW_TAG_subroutine_type: |
72019c9c | 10524 | case DW_TAG_set_type: |
c906108c | 10525 | case DW_TAG_array_type: |
c906108c | 10526 | case DW_TAG_pointer_type: |
c906108c | 10527 | case DW_TAG_ptr_to_member_type: |
c906108c | 10528 | case DW_TAG_reference_type: |
4297a3f0 | 10529 | case DW_TAG_rvalue_reference_type: |
c906108c | 10530 | case DW_TAG_string_type: |
c906108c | 10531 | break; |
134d01f1 | 10532 | |
c906108c | 10533 | case DW_TAG_base_type: |
a02abb62 | 10534 | case DW_TAG_subrange_type: |
cb249c71 | 10535 | case DW_TAG_typedef: |
134d01f1 DJ |
10536 | /* Add a typedef symbol for the type definition, if it has a |
10537 | DW_AT_name. */ | |
f792889a | 10538 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 10539 | break; |
c906108c | 10540 | case DW_TAG_common_block: |
e7c27a73 | 10541 | read_common_block (die, cu); |
c906108c SS |
10542 | break; |
10543 | case DW_TAG_common_inclusion: | |
10544 | break; | |
d9fa45fe | 10545 | case DW_TAG_namespace: |
4d4ec4e5 | 10546 | cu->processing_has_namespace_info = 1; |
e7c27a73 | 10547 | read_namespace (die, cu); |
d9fa45fe | 10548 | break; |
5d7cb8df | 10549 | case DW_TAG_module: |
4d4ec4e5 | 10550 | cu->processing_has_namespace_info = 1; |
5d7cb8df JK |
10551 | read_module (die, cu); |
10552 | break; | |
d9fa45fe | 10553 | case DW_TAG_imported_declaration: |
74921315 KS |
10554 | cu->processing_has_namespace_info = 1; |
10555 | if (read_namespace_alias (die, cu)) | |
10556 | break; | |
86a73007 TT |
10557 | /* The declaration is not a global namespace alias. */ |
10558 | /* Fall through. */ | |
d9fa45fe | 10559 | case DW_TAG_imported_module: |
4d4ec4e5 | 10560 | cu->processing_has_namespace_info = 1; |
27aa8d6a SW |
10561 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
10562 | || cu->language != language_fortran)) | |
b98664d3 | 10563 | complaint (_("Tag '%s' has unexpected children"), |
27aa8d6a SW |
10564 | dwarf_tag_name (die->tag)); |
10565 | read_import_statement (die, cu); | |
d9fa45fe | 10566 | break; |
95554aad TT |
10567 | |
10568 | case DW_TAG_imported_unit: | |
10569 | process_imported_unit_die (die, cu); | |
10570 | break; | |
10571 | ||
71a3c369 TT |
10572 | case DW_TAG_variable: |
10573 | read_variable (die, cu); | |
10574 | break; | |
10575 | ||
c906108c | 10576 | default: |
e7c27a73 | 10577 | new_symbol (die, NULL, cu); |
c906108c SS |
10578 | break; |
10579 | } | |
10580 | } | |
ca69b9e6 DE |
10581 | \f |
10582 | /* DWARF name computation. */ | |
c906108c | 10583 | |
94af9270 KS |
10584 | /* A helper function for dwarf2_compute_name which determines whether DIE |
10585 | needs to have the name of the scope prepended to the name listed in the | |
10586 | die. */ | |
10587 | ||
10588 | static int | |
10589 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
10590 | { | |
1c809c68 TT |
10591 | struct attribute *attr; |
10592 | ||
94af9270 KS |
10593 | switch (die->tag) |
10594 | { | |
10595 | case DW_TAG_namespace: | |
10596 | case DW_TAG_typedef: | |
10597 | case DW_TAG_class_type: | |
10598 | case DW_TAG_interface_type: | |
10599 | case DW_TAG_structure_type: | |
10600 | case DW_TAG_union_type: | |
10601 | case DW_TAG_enumeration_type: | |
10602 | case DW_TAG_enumerator: | |
10603 | case DW_TAG_subprogram: | |
08a76f8a | 10604 | case DW_TAG_inlined_subroutine: |
94af9270 | 10605 | case DW_TAG_member: |
74921315 | 10606 | case DW_TAG_imported_declaration: |
94af9270 KS |
10607 | return 1; |
10608 | ||
10609 | case DW_TAG_variable: | |
c2b0a229 | 10610 | case DW_TAG_constant: |
94af9270 KS |
10611 | /* We only need to prefix "globally" visible variables. These include |
10612 | any variable marked with DW_AT_external or any variable that | |
10613 | lives in a namespace. [Variables in anonymous namespaces | |
10614 | require prefixing, but they are not DW_AT_external.] */ | |
10615 | ||
10616 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
10617 | { | |
10618 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 10619 | |
94af9270 KS |
10620 | return die_needs_namespace (die_specification (die, &spec_cu), |
10621 | spec_cu); | |
10622 | } | |
10623 | ||
1c809c68 | 10624 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
10625 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
10626 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
10627 | return 0; |
10628 | /* A variable in a lexical block of some kind does not need a | |
10629 | namespace, even though in C++ such variables may be external | |
10630 | and have a mangled name. */ | |
10631 | if (die->parent->tag == DW_TAG_lexical_block | |
10632 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
10633 | || die->parent->tag == DW_TAG_catch_block |
10634 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
10635 | return 0; |
10636 | return 1; | |
94af9270 KS |
10637 | |
10638 | default: | |
10639 | return 0; | |
10640 | } | |
10641 | } | |
10642 | ||
73b9be8b KS |
10643 | /* Return the DIE's linkage name attribute, either DW_AT_linkage_name |
10644 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10645 | defined for the given DIE. */ | |
10646 | ||
10647 | static struct attribute * | |
10648 | dw2_linkage_name_attr (struct die_info *die, struct dwarf2_cu *cu) | |
10649 | { | |
10650 | struct attribute *attr; | |
10651 | ||
10652 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
10653 | if (attr == NULL) | |
10654 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10655 | ||
10656 | return attr; | |
10657 | } | |
10658 | ||
10659 | /* Return the DIE's linkage name as a string, either DW_AT_linkage_name | |
10660 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10661 | defined for the given DIE. */ | |
10662 | ||
10663 | static const char * | |
10664 | dw2_linkage_name (struct die_info *die, struct dwarf2_cu *cu) | |
10665 | { | |
10666 | const char *linkage_name; | |
10667 | ||
10668 | linkage_name = dwarf2_string_attr (die, DW_AT_linkage_name, cu); | |
10669 | if (linkage_name == NULL) | |
10670 | linkage_name = dwarf2_string_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10671 | ||
10672 | return linkage_name; | |
10673 | } | |
10674 | ||
94af9270 | 10675 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 | 10676 | compute the physname for the object, which include a method's: |
9c37b5ae | 10677 | - formal parameters (C++), |
a766d390 | 10678 | - receiver type (Go), |
a766d390 DE |
10679 | |
10680 | The term "physname" is a bit confusing. | |
10681 | For C++, for example, it is the demangled name. | |
10682 | For Go, for example, it's the mangled name. | |
94af9270 | 10683 | |
af6b7be1 JB |
10684 | For Ada, return the DIE's linkage name rather than the fully qualified |
10685 | name. PHYSNAME is ignored.. | |
10686 | ||
94af9270 KS |
10687 | The result is allocated on the objfile_obstack and canonicalized. */ |
10688 | ||
10689 | static const char * | |
15d034d0 TT |
10690 | dwarf2_compute_name (const char *name, |
10691 | struct die_info *die, struct dwarf2_cu *cu, | |
94af9270 KS |
10692 | int physname) |
10693 | { | |
518817b3 | 10694 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
bb5ed363 | 10695 | |
94af9270 KS |
10696 | if (name == NULL) |
10697 | name = dwarf2_name (die, cu); | |
10698 | ||
2ee7123e DE |
10699 | /* For Fortran GDB prefers DW_AT_*linkage_name for the physname if present |
10700 | but otherwise compute it by typename_concat inside GDB. | |
10701 | FIXME: Actually this is not really true, or at least not always true. | |
10702 | It's all very confusing. SYMBOL_SET_NAMES doesn't try to demangle | |
5e2db402 | 10703 | Fortran names because there is no mangling standard. So new_symbol |
2ee7123e DE |
10704 | will set the demangled name to the result of dwarf2_full_name, and it is |
10705 | the demangled name that GDB uses if it exists. */ | |
f55ee35c JK |
10706 | if (cu->language == language_ada |
10707 | || (cu->language == language_fortran && physname)) | |
10708 | { | |
10709 | /* For Ada unit, we prefer the linkage name over the name, as | |
10710 | the former contains the exported name, which the user expects | |
10711 | to be able to reference. Ideally, we want the user to be able | |
10712 | to reference this entity using either natural or linkage name, | |
10713 | but we haven't started looking at this enhancement yet. */ | |
73b9be8b | 10714 | const char *linkage_name = dw2_linkage_name (die, cu); |
f55ee35c | 10715 | |
2ee7123e DE |
10716 | if (linkage_name != NULL) |
10717 | return linkage_name; | |
f55ee35c JK |
10718 | } |
10719 | ||
94af9270 KS |
10720 | /* These are the only languages we know how to qualify names in. */ |
10721 | if (name != NULL | |
9c37b5ae | 10722 | && (cu->language == language_cplus |
c44af4eb TT |
10723 | || cu->language == language_fortran || cu->language == language_d |
10724 | || cu->language == language_rust)) | |
94af9270 KS |
10725 | { |
10726 | if (die_needs_namespace (die, cu)) | |
10727 | { | |
0d5cff50 | 10728 | const char *prefix; |
34a68019 | 10729 | const char *canonical_name = NULL; |
94af9270 | 10730 | |
d7e74731 PA |
10731 | string_file buf; |
10732 | ||
94af9270 | 10733 | prefix = determine_prefix (die, cu); |
94af9270 KS |
10734 | if (*prefix != '\0') |
10735 | { | |
f55ee35c JK |
10736 | char *prefixed_name = typename_concat (NULL, prefix, name, |
10737 | physname, cu); | |
9a619af0 | 10738 | |
d7e74731 | 10739 | buf.puts (prefixed_name); |
94af9270 KS |
10740 | xfree (prefixed_name); |
10741 | } | |
10742 | else | |
d7e74731 | 10743 | buf.puts (name); |
94af9270 | 10744 | |
98bfdba5 PA |
10745 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
10746 | as children with DW_TAG_template_type_param or | |
10747 | DW_TAG_value_type_param. If the latter, add them to the name | |
10748 | here. If the name already has template parameters, then | |
10749 | skip this step; some versions of GCC emit both, and | |
10750 | it is more efficient to use the pre-computed name. | |
10751 | ||
10752 | Something to keep in mind about this process: it is very | |
10753 | unlikely, or in some cases downright impossible, to produce | |
10754 | something that will match the mangled name of a function. | |
10755 | If the definition of the function has the same debug info, | |
10756 | we should be able to match up with it anyway. But fallbacks | |
10757 | using the minimal symbol, for instance to find a method | |
10758 | implemented in a stripped copy of libstdc++, will not work. | |
10759 | If we do not have debug info for the definition, we will have to | |
10760 | match them up some other way. | |
10761 | ||
10762 | When we do name matching there is a related problem with function | |
10763 | templates; two instantiated function templates are allowed to | |
10764 | differ only by their return types, which we do not add here. */ | |
10765 | ||
10766 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
10767 | { | |
10768 | struct attribute *attr; | |
10769 | struct die_info *child; | |
10770 | int first = 1; | |
10771 | ||
10772 | die->building_fullname = 1; | |
10773 | ||
10774 | for (child = die->child; child != NULL; child = child->sibling) | |
10775 | { | |
10776 | struct type *type; | |
12df843f | 10777 | LONGEST value; |
d521ce57 | 10778 | const gdb_byte *bytes; |
98bfdba5 PA |
10779 | struct dwarf2_locexpr_baton *baton; |
10780 | struct value *v; | |
10781 | ||
10782 | if (child->tag != DW_TAG_template_type_param | |
10783 | && child->tag != DW_TAG_template_value_param) | |
10784 | continue; | |
10785 | ||
10786 | if (first) | |
10787 | { | |
d7e74731 | 10788 | buf.puts ("<"); |
98bfdba5 PA |
10789 | first = 0; |
10790 | } | |
10791 | else | |
d7e74731 | 10792 | buf.puts (", "); |
98bfdba5 PA |
10793 | |
10794 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
10795 | if (attr == NULL) | |
10796 | { | |
b98664d3 | 10797 | complaint (_("template parameter missing DW_AT_type")); |
d7e74731 | 10798 | buf.puts ("UNKNOWN_TYPE"); |
98bfdba5 PA |
10799 | continue; |
10800 | } | |
10801 | type = die_type (child, cu); | |
10802 | ||
10803 | if (child->tag == DW_TAG_template_type_param) | |
10804 | { | |
c1ec8cea TT |
10805 | c_print_type (type, "", &buf, -1, 0, cu->language, |
10806 | &type_print_raw_options); | |
98bfdba5 PA |
10807 | continue; |
10808 | } | |
10809 | ||
10810 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
10811 | if (attr == NULL) | |
10812 | { | |
b98664d3 | 10813 | complaint (_("template parameter missing " |
3e43a32a | 10814 | "DW_AT_const_value")); |
d7e74731 | 10815 | buf.puts ("UNKNOWN_VALUE"); |
98bfdba5 PA |
10816 | continue; |
10817 | } | |
10818 | ||
10819 | dwarf2_const_value_attr (attr, type, name, | |
10820 | &cu->comp_unit_obstack, cu, | |
10821 | &value, &bytes, &baton); | |
10822 | ||
10823 | if (TYPE_NOSIGN (type)) | |
10824 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
10825 | changed, this can use value_print instead. */ | |
d7e74731 | 10826 | c_printchar (value, type, &buf); |
98bfdba5 PA |
10827 | else |
10828 | { | |
10829 | struct value_print_options opts; | |
10830 | ||
10831 | if (baton != NULL) | |
10832 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
10833 | baton->data, | |
10834 | baton->size, | |
10835 | baton->per_cu); | |
10836 | else if (bytes != NULL) | |
10837 | { | |
10838 | v = allocate_value (type); | |
10839 | memcpy (value_contents_writeable (v), bytes, | |
10840 | TYPE_LENGTH (type)); | |
10841 | } | |
10842 | else | |
10843 | v = value_from_longest (type, value); | |
10844 | ||
3e43a32a MS |
10845 | /* Specify decimal so that we do not depend on |
10846 | the radix. */ | |
98bfdba5 PA |
10847 | get_formatted_print_options (&opts, 'd'); |
10848 | opts.raw = 1; | |
d7e74731 | 10849 | value_print (v, &buf, &opts); |
98bfdba5 | 10850 | release_value (v); |
98bfdba5 PA |
10851 | } |
10852 | } | |
10853 | ||
10854 | die->building_fullname = 0; | |
10855 | ||
10856 | if (!first) | |
10857 | { | |
10858 | /* Close the argument list, with a space if necessary | |
10859 | (nested templates). */ | |
d7e74731 PA |
10860 | if (!buf.empty () && buf.string ().back () == '>') |
10861 | buf.puts (" >"); | |
98bfdba5 | 10862 | else |
d7e74731 | 10863 | buf.puts (">"); |
98bfdba5 PA |
10864 | } |
10865 | } | |
10866 | ||
9c37b5ae | 10867 | /* For C++ methods, append formal parameter type |
94af9270 | 10868 | information, if PHYSNAME. */ |
6e70227d | 10869 | |
94af9270 | 10870 | if (physname && die->tag == DW_TAG_subprogram |
9c37b5ae | 10871 | && cu->language == language_cplus) |
94af9270 KS |
10872 | { |
10873 | struct type *type = read_type_die (die, cu); | |
10874 | ||
d7e74731 | 10875 | c_type_print_args (type, &buf, 1, cu->language, |
79d43c61 | 10876 | &type_print_raw_options); |
94af9270 | 10877 | |
9c37b5ae | 10878 | if (cu->language == language_cplus) |
94af9270 | 10879 | { |
60430eff DJ |
10880 | /* Assume that an artificial first parameter is |
10881 | "this", but do not crash if it is not. RealView | |
10882 | marks unnamed (and thus unused) parameters as | |
10883 | artificial; there is no way to differentiate | |
10884 | the two cases. */ | |
94af9270 KS |
10885 | if (TYPE_NFIELDS (type) > 0 |
10886 | && TYPE_FIELD_ARTIFICIAL (type, 0) | |
60430eff | 10887 | && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_PTR |
3e43a32a MS |
10888 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, |
10889 | 0)))) | |
d7e74731 | 10890 | buf.puts (" const"); |
94af9270 KS |
10891 | } |
10892 | } | |
10893 | ||
d7e74731 | 10894 | const std::string &intermediate_name = buf.string (); |
94af9270 KS |
10895 | |
10896 | if (cu->language == language_cplus) | |
34a68019 | 10897 | canonical_name |
322a8516 | 10898 | = dwarf2_canonicalize_name (intermediate_name.c_str (), cu, |
34a68019 TT |
10899 | &objfile->per_bfd->storage_obstack); |
10900 | ||
10901 | /* If we only computed INTERMEDIATE_NAME, or if | |
10902 | INTERMEDIATE_NAME is already canonical, then we need to | |
10903 | copy it to the appropriate obstack. */ | |
322a8516 | 10904 | if (canonical_name == NULL || canonical_name == intermediate_name.c_str ()) |
224c3ddb SM |
10905 | name = ((const char *) |
10906 | obstack_copy0 (&objfile->per_bfd->storage_obstack, | |
322a8516 PA |
10907 | intermediate_name.c_str (), |
10908 | intermediate_name.length ())); | |
34a68019 TT |
10909 | else |
10910 | name = canonical_name; | |
94af9270 KS |
10911 | } |
10912 | } | |
10913 | ||
10914 | return name; | |
10915 | } | |
10916 | ||
0114d602 DJ |
10917 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
10918 | If scope qualifiers are appropriate they will be added. The result | |
34a68019 | 10919 | will be allocated on the storage_obstack, or NULL if the DIE does |
94af9270 KS |
10920 | not have a name. NAME may either be from a previous call to |
10921 | dwarf2_name or NULL. | |
10922 | ||
9c37b5ae | 10923 | The output string will be canonicalized (if C++). */ |
0114d602 DJ |
10924 | |
10925 | static const char * | |
15d034d0 | 10926 | dwarf2_full_name (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 10927 | { |
94af9270 KS |
10928 | return dwarf2_compute_name (name, die, cu, 0); |
10929 | } | |
0114d602 | 10930 | |
94af9270 KS |
10931 | /* Construct a physname for the given DIE in CU. NAME may either be |
10932 | from a previous call to dwarf2_name or NULL. The result will be | |
10933 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
10934 | name. | |
0114d602 | 10935 | |
9c37b5ae | 10936 | The output string will be canonicalized (if C++). */ |
0114d602 | 10937 | |
94af9270 | 10938 | static const char * |
15d034d0 | 10939 | dwarf2_physname (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
94af9270 | 10940 | { |
518817b3 | 10941 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
900e11f9 | 10942 | const char *retval, *mangled = NULL, *canon = NULL; |
900e11f9 JK |
10943 | int need_copy = 1; |
10944 | ||
10945 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
10946 | on its own. */ | |
10947 | if (!die_needs_namespace (die, cu)) | |
10948 | return dwarf2_compute_name (name, die, cu, 1); | |
10949 | ||
73b9be8b | 10950 | mangled = dw2_linkage_name (die, cu); |
900e11f9 | 10951 | |
e98c9e7c TT |
10952 | /* rustc emits invalid values for DW_AT_linkage_name. Ignore these. |
10953 | See https://github.com/rust-lang/rust/issues/32925. */ | |
10954 | if (cu->language == language_rust && mangled != NULL | |
10955 | && strchr (mangled, '{') != NULL) | |
10956 | mangled = NULL; | |
10957 | ||
900e11f9 JK |
10958 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB |
10959 | has computed. */ | |
791afaa2 | 10960 | gdb::unique_xmalloc_ptr<char> demangled; |
7d45c7c3 | 10961 | if (mangled != NULL) |
900e11f9 | 10962 | { |
900e11f9 | 10963 | |
59cc4834 JB |
10964 | if (language_def (cu->language)->la_store_sym_names_in_linkage_form_p) |
10965 | { | |
10966 | /* Do nothing (do not demangle the symbol name). */ | |
10967 | } | |
10968 | else if (cu->language == language_go) | |
a766d390 | 10969 | { |
5e2db402 TT |
10970 | /* This is a lie, but we already lie to the caller new_symbol. |
10971 | new_symbol assumes we return the mangled name. | |
a766d390 | 10972 | This just undoes that lie until things are cleaned up. */ |
a766d390 DE |
10973 | } |
10974 | else | |
10975 | { | |
0eb876f5 JB |
10976 | /* Use DMGL_RET_DROP for C++ template functions to suppress |
10977 | their return type. It is easier for GDB users to search | |
10978 | for such functions as `name(params)' than `long name(params)'. | |
10979 | In such case the minimal symbol names do not match the full | |
10980 | symbol names but for template functions there is never a need | |
10981 | to look up their definition from their declaration so | |
10982 | the only disadvantage remains the minimal symbol variant | |
10983 | `long name(params)' does not have the proper inferior type. */ | |
791afaa2 TT |
10984 | demangled.reset (gdb_demangle (mangled, |
10985 | (DMGL_PARAMS | DMGL_ANSI | |
10986 | | DMGL_RET_DROP))); | |
a766d390 | 10987 | } |
900e11f9 | 10988 | if (demangled) |
791afaa2 | 10989 | canon = demangled.get (); |
900e11f9 JK |
10990 | else |
10991 | { | |
10992 | canon = mangled; | |
10993 | need_copy = 0; | |
10994 | } | |
10995 | } | |
10996 | ||
10997 | if (canon == NULL || check_physname) | |
10998 | { | |
10999 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
11000 | ||
11001 | if (canon != NULL && strcmp (physname, canon) != 0) | |
11002 | { | |
11003 | /* It may not mean a bug in GDB. The compiler could also | |
11004 | compute DW_AT_linkage_name incorrectly. But in such case | |
11005 | GDB would need to be bug-to-bug compatible. */ | |
11006 | ||
b98664d3 | 11007 | complaint (_("Computed physname <%s> does not match demangled <%s> " |
9d8780f0 SM |
11008 | "(from linkage <%s>) - DIE at %s [in module %s]"), |
11009 | physname, canon, mangled, sect_offset_str (die->sect_off), | |
4262abfb | 11010 | objfile_name (objfile)); |
900e11f9 JK |
11011 | |
11012 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
11013 | is available here - over computed PHYSNAME. It is safer | |
11014 | against both buggy GDB and buggy compilers. */ | |
11015 | ||
11016 | retval = canon; | |
11017 | } | |
11018 | else | |
11019 | { | |
11020 | retval = physname; | |
11021 | need_copy = 0; | |
11022 | } | |
11023 | } | |
11024 | else | |
11025 | retval = canon; | |
11026 | ||
11027 | if (need_copy) | |
224c3ddb SM |
11028 | retval = ((const char *) |
11029 | obstack_copy0 (&objfile->per_bfd->storage_obstack, | |
11030 | retval, strlen (retval))); | |
900e11f9 | 11031 | |
900e11f9 | 11032 | return retval; |
0114d602 DJ |
11033 | } |
11034 | ||
74921315 KS |
11035 | /* Inspect DIE in CU for a namespace alias. If one exists, record |
11036 | a new symbol for it. | |
11037 | ||
11038 | Returns 1 if a namespace alias was recorded, 0 otherwise. */ | |
11039 | ||
11040 | static int | |
11041 | read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu) | |
11042 | { | |
11043 | struct attribute *attr; | |
11044 | ||
11045 | /* If the die does not have a name, this is not a namespace | |
11046 | alias. */ | |
11047 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
11048 | if (attr != NULL) | |
11049 | { | |
11050 | int num; | |
11051 | struct die_info *d = die; | |
11052 | struct dwarf2_cu *imported_cu = cu; | |
11053 | ||
11054 | /* If the compiler has nested DW_AT_imported_declaration DIEs, | |
11055 | keep inspecting DIEs until we hit the underlying import. */ | |
11056 | #define MAX_NESTED_IMPORTED_DECLARATIONS 100 | |
11057 | for (num = 0; num < MAX_NESTED_IMPORTED_DECLARATIONS; ++num) | |
11058 | { | |
11059 | attr = dwarf2_attr (d, DW_AT_import, cu); | |
11060 | if (attr == NULL) | |
11061 | break; | |
11062 | ||
11063 | d = follow_die_ref (d, attr, &imported_cu); | |
11064 | if (d->tag != DW_TAG_imported_declaration) | |
11065 | break; | |
11066 | } | |
11067 | ||
11068 | if (num == MAX_NESTED_IMPORTED_DECLARATIONS) | |
11069 | { | |
b98664d3 | 11070 | complaint (_("DIE at %s has too many recursively imported " |
9d8780f0 | 11071 | "declarations"), sect_offset_str (d->sect_off)); |
74921315 KS |
11072 | return 0; |
11073 | } | |
11074 | ||
11075 | if (attr != NULL) | |
11076 | { | |
11077 | struct type *type; | |
9c541725 | 11078 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
74921315 | 11079 | |
9c541725 | 11080 | type = get_die_type_at_offset (sect_off, cu->per_cu); |
74921315 KS |
11081 | if (type != NULL && TYPE_CODE (type) == TYPE_CODE_NAMESPACE) |
11082 | { | |
11083 | /* This declaration is a global namespace alias. Add | |
11084 | a symbol for it whose type is the aliased namespace. */ | |
11085 | new_symbol (die, type, cu); | |
11086 | return 1; | |
11087 | } | |
11088 | } | |
11089 | } | |
11090 | ||
11091 | return 0; | |
11092 | } | |
11093 | ||
22cee43f PMR |
11094 | /* Return the using directives repository (global or local?) to use in the |
11095 | current context for LANGUAGE. | |
11096 | ||
11097 | For Ada, imported declarations can materialize renamings, which *may* be | |
11098 | global. However it is impossible (for now?) in DWARF to distinguish | |
11099 | "external" imported declarations and "static" ones. As all imported | |
11100 | declarations seem to be static in all other languages, make them all CU-wide | |
11101 | global only in Ada. */ | |
11102 | ||
11103 | static struct using_direct ** | |
11104 | using_directives (enum language language) | |
11105 | { | |
11106 | if (language == language_ada && context_stack_depth == 0) | |
6cccc9a8 | 11107 | return get_global_using_directives (); |
22cee43f | 11108 | else |
6cccc9a8 | 11109 | return get_local_using_directives (); |
22cee43f PMR |
11110 | } |
11111 | ||
27aa8d6a SW |
11112 | /* Read the import statement specified by the given die and record it. */ |
11113 | ||
11114 | static void | |
11115 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
11116 | { | |
518817b3 | 11117 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
27aa8d6a | 11118 | struct attribute *import_attr; |
32019081 | 11119 | struct die_info *imported_die, *child_die; |
de4affc9 | 11120 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 11121 | const char *imported_name; |
794684b6 | 11122 | const char *imported_name_prefix; |
13387711 SW |
11123 | const char *canonical_name; |
11124 | const char *import_alias; | |
11125 | const char *imported_declaration = NULL; | |
794684b6 | 11126 | const char *import_prefix; |
eb1e02fd | 11127 | std::vector<const char *> excludes; |
13387711 | 11128 | |
27aa8d6a SW |
11129 | import_attr = dwarf2_attr (die, DW_AT_import, cu); |
11130 | if (import_attr == NULL) | |
11131 | { | |
b98664d3 | 11132 | complaint (_("Tag '%s' has no DW_AT_import"), |
27aa8d6a SW |
11133 | dwarf_tag_name (die->tag)); |
11134 | return; | |
11135 | } | |
11136 | ||
de4affc9 CC |
11137 | imported_cu = cu; |
11138 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
11139 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
11140 | if (imported_name == NULL) |
11141 | { | |
11142 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
11143 | ||
11144 | The import in the following code: | |
11145 | namespace A | |
11146 | { | |
11147 | typedef int B; | |
11148 | } | |
11149 | ||
11150 | int main () | |
11151 | { | |
11152 | using A::B; | |
11153 | B b; | |
11154 | return b; | |
11155 | } | |
11156 | ||
11157 | ... | |
11158 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
11159 | <52> DW_AT_decl_file : 1 | |
11160 | <53> DW_AT_decl_line : 6 | |
11161 | <54> DW_AT_import : <0x75> | |
11162 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
11163 | <59> DW_AT_name : B | |
11164 | <5b> DW_AT_decl_file : 1 | |
11165 | <5c> DW_AT_decl_line : 2 | |
11166 | <5d> DW_AT_type : <0x6e> | |
11167 | ... | |
11168 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
11169 | <76> DW_AT_byte_size : 4 | |
11170 | <77> DW_AT_encoding : 5 (signed) | |
11171 | ||
11172 | imports the wrong die ( 0x75 instead of 0x58 ). | |
11173 | This case will be ignored until the gcc bug is fixed. */ | |
11174 | return; | |
11175 | } | |
11176 | ||
82856980 SW |
11177 | /* Figure out the local name after import. */ |
11178 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 11179 | |
794684b6 SW |
11180 | /* Figure out where the statement is being imported to. */ |
11181 | import_prefix = determine_prefix (die, cu); | |
11182 | ||
11183 | /* Figure out what the scope of the imported die is and prepend it | |
11184 | to the name of the imported die. */ | |
de4affc9 | 11185 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 11186 | |
f55ee35c JK |
11187 | if (imported_die->tag != DW_TAG_namespace |
11188 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 11189 | { |
13387711 SW |
11190 | imported_declaration = imported_name; |
11191 | canonical_name = imported_name_prefix; | |
794684b6 | 11192 | } |
13387711 | 11193 | else if (strlen (imported_name_prefix) > 0) |
12aaed36 | 11194 | canonical_name = obconcat (&objfile->objfile_obstack, |
45280282 IB |
11195 | imported_name_prefix, |
11196 | (cu->language == language_d ? "." : "::"), | |
11197 | imported_name, (char *) NULL); | |
13387711 SW |
11198 | else |
11199 | canonical_name = imported_name; | |
794684b6 | 11200 | |
32019081 JK |
11201 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) |
11202 | for (child_die = die->child; child_die && child_die->tag; | |
11203 | child_die = sibling_die (child_die)) | |
11204 | { | |
11205 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
11206 | represented by an imported module entry with an import attribute | |
11207 | referring to the module and owned entries corresponding to those | |
11208 | entities that are renamed as part of being imported. */ | |
11209 | ||
11210 | if (child_die->tag != DW_TAG_imported_declaration) | |
11211 | { | |
b98664d3 | 11212 | complaint (_("child DW_TAG_imported_declaration expected " |
9d8780f0 SM |
11213 | "- DIE at %s [in module %s]"), |
11214 | sect_offset_str (child_die->sect_off), | |
11215 | objfile_name (objfile)); | |
32019081 JK |
11216 | continue; |
11217 | } | |
11218 | ||
11219 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
11220 | if (import_attr == NULL) | |
11221 | { | |
b98664d3 | 11222 | complaint (_("Tag '%s' has no DW_AT_import"), |
32019081 JK |
11223 | dwarf_tag_name (child_die->tag)); |
11224 | continue; | |
11225 | } | |
11226 | ||
11227 | imported_cu = cu; | |
11228 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
11229 | &imported_cu); | |
11230 | imported_name = dwarf2_name (imported_die, imported_cu); | |
11231 | if (imported_name == NULL) | |
11232 | { | |
b98664d3 | 11233 | complaint (_("child DW_TAG_imported_declaration has unknown " |
9d8780f0 SM |
11234 | "imported name - DIE at %s [in module %s]"), |
11235 | sect_offset_str (child_die->sect_off), | |
11236 | objfile_name (objfile)); | |
32019081 JK |
11237 | continue; |
11238 | } | |
11239 | ||
eb1e02fd | 11240 | excludes.push_back (imported_name); |
32019081 JK |
11241 | |
11242 | process_die (child_die, cu); | |
11243 | } | |
11244 | ||
22cee43f PMR |
11245 | add_using_directive (using_directives (cu->language), |
11246 | import_prefix, | |
11247 | canonical_name, | |
11248 | import_alias, | |
11249 | imported_declaration, | |
11250 | excludes, | |
11251 | 0, | |
11252 | &objfile->objfile_obstack); | |
27aa8d6a SW |
11253 | } |
11254 | ||
5230b05a WT |
11255 | /* ICC<14 does not output the required DW_AT_declaration on incomplete |
11256 | types, but gives them a size of zero. Starting with version 14, | |
11257 | ICC is compatible with GCC. */ | |
11258 | ||
11259 | static int | |
11260 | producer_is_icc_lt_14 (struct dwarf2_cu *cu) | |
11261 | { | |
11262 | if (!cu->checked_producer) | |
11263 | check_producer (cu); | |
11264 | ||
11265 | return cu->producer_is_icc_lt_14; | |
11266 | } | |
11267 | ||
1b80a9fa JK |
11268 | /* Check for possibly missing DW_AT_comp_dir with relative .debug_line |
11269 | directory paths. GCC SVN r127613 (new option -fdebug-prefix-map) fixed | |
11270 | this, it was first present in GCC release 4.3.0. */ | |
11271 | ||
11272 | static int | |
11273 | producer_is_gcc_lt_4_3 (struct dwarf2_cu *cu) | |
11274 | { | |
11275 | if (!cu->checked_producer) | |
11276 | check_producer (cu); | |
11277 | ||
11278 | return cu->producer_is_gcc_lt_4_3; | |
11279 | } | |
11280 | ||
d721ba37 PA |
11281 | static file_and_directory |
11282 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu) | |
9291a0cd | 11283 | { |
d721ba37 PA |
11284 | file_and_directory res; |
11285 | ||
9291a0cd TT |
11286 | /* Find the filename. Do not use dwarf2_name here, since the filename |
11287 | is not a source language identifier. */ | |
d721ba37 PA |
11288 | res.name = dwarf2_string_attr (die, DW_AT_name, cu); |
11289 | res.comp_dir = dwarf2_string_attr (die, DW_AT_comp_dir, cu); | |
9291a0cd | 11290 | |
d721ba37 PA |
11291 | if (res.comp_dir == NULL |
11292 | && producer_is_gcc_lt_4_3 (cu) && res.name != NULL | |
11293 | && IS_ABSOLUTE_PATH (res.name)) | |
9291a0cd | 11294 | { |
d721ba37 PA |
11295 | res.comp_dir_storage = ldirname (res.name); |
11296 | if (!res.comp_dir_storage.empty ()) | |
11297 | res.comp_dir = res.comp_dir_storage.c_str (); | |
9291a0cd | 11298 | } |
d721ba37 | 11299 | if (res.comp_dir != NULL) |
9291a0cd TT |
11300 | { |
11301 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
11302 | directory, get rid of it. */ | |
d721ba37 | 11303 | const char *cp = strchr (res.comp_dir, ':'); |
9291a0cd | 11304 | |
d721ba37 PA |
11305 | if (cp && cp != res.comp_dir && cp[-1] == '.' && cp[1] == '/') |
11306 | res.comp_dir = cp + 1; | |
9291a0cd TT |
11307 | } |
11308 | ||
d721ba37 PA |
11309 | if (res.name == NULL) |
11310 | res.name = "<unknown>"; | |
11311 | ||
11312 | return res; | |
9291a0cd TT |
11313 | } |
11314 | ||
f4dc4d17 DE |
11315 | /* Handle DW_AT_stmt_list for a compilation unit. |
11316 | DIE is the DW_TAG_compile_unit die for CU. | |
c3b7b696 YQ |
11317 | COMP_DIR is the compilation directory. LOWPC is passed to |
11318 | dwarf_decode_lines. See dwarf_decode_lines comments about it. */ | |
2ab95328 TT |
11319 | |
11320 | static void | |
11321 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
c3b7b696 | 11322 | const char *comp_dir, CORE_ADDR lowpc) /* ARI: editCase function */ |
2ab95328 | 11323 | { |
518817b3 SM |
11324 | struct dwarf2_per_objfile *dwarf2_per_objfile |
11325 | = cu->per_cu->dwarf2_per_objfile; | |
527f3840 | 11326 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
2ab95328 | 11327 | struct attribute *attr; |
527f3840 JK |
11328 | struct line_header line_header_local; |
11329 | hashval_t line_header_local_hash; | |
527f3840 JK |
11330 | void **slot; |
11331 | int decode_mapping; | |
2ab95328 | 11332 | |
f4dc4d17 DE |
11333 | gdb_assert (! cu->per_cu->is_debug_types); |
11334 | ||
2ab95328 | 11335 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
527f3840 JK |
11336 | if (attr == NULL) |
11337 | return; | |
11338 | ||
9c541725 | 11339 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
527f3840 JK |
11340 | |
11341 | /* The line header hash table is only created if needed (it exists to | |
11342 | prevent redundant reading of the line table for partial_units). | |
11343 | If we're given a partial_unit, we'll need it. If we're given a | |
11344 | compile_unit, then use the line header hash table if it's already | |
11345 | created, but don't create one just yet. */ | |
11346 | ||
11347 | if (dwarf2_per_objfile->line_header_hash == NULL | |
11348 | && die->tag == DW_TAG_partial_unit) | |
2ab95328 | 11349 | { |
527f3840 JK |
11350 | dwarf2_per_objfile->line_header_hash |
11351 | = htab_create_alloc_ex (127, line_header_hash_voidp, | |
11352 | line_header_eq_voidp, | |
11353 | free_line_header_voidp, | |
11354 | &objfile->objfile_obstack, | |
11355 | hashtab_obstack_allocate, | |
11356 | dummy_obstack_deallocate); | |
11357 | } | |
2ab95328 | 11358 | |
9c541725 | 11359 | line_header_local.sect_off = line_offset; |
527f3840 JK |
11360 | line_header_local.offset_in_dwz = cu->per_cu->is_dwz; |
11361 | line_header_local_hash = line_header_hash (&line_header_local); | |
11362 | if (dwarf2_per_objfile->line_header_hash != NULL) | |
11363 | { | |
11364 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash, | |
11365 | &line_header_local, | |
11366 | line_header_local_hash, NO_INSERT); | |
11367 | ||
11368 | /* For DW_TAG_compile_unit we need info like symtab::linetable which | |
11369 | is not present in *SLOT (since if there is something in *SLOT then | |
11370 | it will be for a partial_unit). */ | |
11371 | if (die->tag == DW_TAG_partial_unit && slot != NULL) | |
dee91e82 | 11372 | { |
527f3840 | 11373 | gdb_assert (*slot != NULL); |
9a3c8263 | 11374 | cu->line_header = (struct line_header *) *slot; |
527f3840 | 11375 | return; |
dee91e82 | 11376 | } |
2ab95328 | 11377 | } |
527f3840 JK |
11378 | |
11379 | /* dwarf_decode_line_header does not yet provide sufficient information. | |
11380 | We always have to call also dwarf_decode_lines for it. */ | |
fff8551c PA |
11381 | line_header_up lh = dwarf_decode_line_header (line_offset, cu); |
11382 | if (lh == NULL) | |
527f3840 | 11383 | return; |
4c8aa72d PA |
11384 | |
11385 | cu->line_header = lh.release (); | |
11386 | cu->line_header_die_owner = die; | |
527f3840 JK |
11387 | |
11388 | if (dwarf2_per_objfile->line_header_hash == NULL) | |
11389 | slot = NULL; | |
11390 | else | |
11391 | { | |
11392 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash, | |
11393 | &line_header_local, | |
11394 | line_header_local_hash, INSERT); | |
11395 | gdb_assert (slot != NULL); | |
11396 | } | |
11397 | if (slot != NULL && *slot == NULL) | |
11398 | { | |
11399 | /* This newly decoded line number information unit will be owned | |
11400 | by line_header_hash hash table. */ | |
11401 | *slot = cu->line_header; | |
4c8aa72d | 11402 | cu->line_header_die_owner = NULL; |
527f3840 JK |
11403 | } |
11404 | else | |
11405 | { | |
11406 | /* We cannot free any current entry in (*slot) as that struct line_header | |
11407 | may be already used by multiple CUs. Create only temporary decoded | |
11408 | line_header for this CU - it may happen at most once for each line | |
11409 | number information unit. And if we're not using line_header_hash | |
11410 | then this is what we want as well. */ | |
11411 | gdb_assert (die->tag != DW_TAG_partial_unit); | |
527f3840 JK |
11412 | } |
11413 | decode_mapping = (die->tag != DW_TAG_partial_unit); | |
11414 | dwarf_decode_lines (cu->line_header, comp_dir, cu, NULL, lowpc, | |
11415 | decode_mapping); | |
fff8551c | 11416 | |
2ab95328 TT |
11417 | } |
11418 | ||
95554aad | 11419 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 11420 | |
c906108c | 11421 | static void |
e7c27a73 | 11422 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11423 | { |
518817b3 SM |
11424 | struct dwarf2_per_objfile *dwarf2_per_objfile |
11425 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 11426 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 11427 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
2acceee2 | 11428 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
11429 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
11430 | struct attribute *attr; | |
c906108c | 11431 | struct die_info *child_die; |
e142c38c | 11432 | CORE_ADDR baseaddr; |
6e70227d | 11433 | |
e142c38c | 11434 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c | 11435 | |
fae299cd | 11436 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
11437 | |
11438 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
11439 | from finish_block. */ | |
2acceee2 | 11440 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c | 11441 | lowpc = highpc; |
3e29f34a | 11442 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
c906108c | 11443 | |
d721ba37 | 11444 | file_and_directory fnd = find_file_and_directory (die, cu); |
e1024ff1 | 11445 | |
95554aad | 11446 | prepare_one_comp_unit (cu, die, cu->language); |
303b6f5d | 11447 | |
f4b8a18d KW |
11448 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
11449 | standardised yet. As a workaround for the language detection we fall | |
11450 | back to the DW_AT_producer string. */ | |
11451 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
11452 | cu->language = language_opencl; | |
11453 | ||
3019eac3 DE |
11454 | /* Similar hack for Go. */ |
11455 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
11456 | set_cu_language (DW_LANG_Go, cu); | |
11457 | ||
d721ba37 | 11458 | dwarf2_start_symtab (cu, fnd.name, fnd.comp_dir, lowpc); |
3019eac3 DE |
11459 | |
11460 | /* Decode line number information if present. We do this before | |
11461 | processing child DIEs, so that the line header table is available | |
11462 | for DW_AT_decl_file. */ | |
d721ba37 | 11463 | handle_DW_AT_stmt_list (die, cu, fnd.comp_dir, lowpc); |
3019eac3 DE |
11464 | |
11465 | /* Process all dies in compilation unit. */ | |
11466 | if (die->child != NULL) | |
11467 | { | |
11468 | child_die = die->child; | |
11469 | while (child_die && child_die->tag) | |
11470 | { | |
11471 | process_die (child_die, cu); | |
11472 | child_die = sibling_die (child_die); | |
11473 | } | |
11474 | } | |
11475 | ||
11476 | /* Decode macro information, if present. Dwarf 2 macro information | |
11477 | refers to information in the line number info statement program | |
11478 | header, so we can only read it if we've read the header | |
11479 | successfully. */ | |
0af92d60 JK |
11480 | attr = dwarf2_attr (die, DW_AT_macros, cu); |
11481 | if (attr == NULL) | |
11482 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
3019eac3 DE |
11483 | if (attr && cu->line_header) |
11484 | { | |
11485 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
b98664d3 | 11486 | complaint (_("CU refers to both DW_AT_macros and DW_AT_macro_info")); |
3019eac3 | 11487 | |
43f3e411 | 11488 | dwarf_decode_macros (cu, DW_UNSND (attr), 1); |
3019eac3 DE |
11489 | } |
11490 | else | |
11491 | { | |
11492 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
11493 | if (attr && cu->line_header) | |
11494 | { | |
11495 | unsigned int macro_offset = DW_UNSND (attr); | |
11496 | ||
43f3e411 | 11497 | dwarf_decode_macros (cu, macro_offset, 0); |
3019eac3 DE |
11498 | } |
11499 | } | |
3019eac3 DE |
11500 | } |
11501 | ||
f4dc4d17 DE |
11502 | /* TU version of handle_DW_AT_stmt_list for read_type_unit_scope. |
11503 | Create the set of symtabs used by this TU, or if this TU is sharing | |
11504 | symtabs with another TU and the symtabs have already been created | |
11505 | then restore those symtabs in the line header. | |
11506 | We don't need the pc/line-number mapping for type units. */ | |
3019eac3 DE |
11507 | |
11508 | static void | |
f4dc4d17 | 11509 | setup_type_unit_groups (struct die_info *die, struct dwarf2_cu *cu) |
3019eac3 | 11510 | { |
f4dc4d17 DE |
11511 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
11512 | struct type_unit_group *tu_group; | |
11513 | int first_time; | |
3019eac3 | 11514 | struct attribute *attr; |
9c541725 | 11515 | unsigned int i; |
0186c6a7 | 11516 | struct signatured_type *sig_type; |
3019eac3 | 11517 | |
f4dc4d17 | 11518 | gdb_assert (per_cu->is_debug_types); |
0186c6a7 | 11519 | sig_type = (struct signatured_type *) per_cu; |
3019eac3 | 11520 | |
f4dc4d17 | 11521 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
3019eac3 | 11522 | |
f4dc4d17 | 11523 | /* If we're using .gdb_index (includes -readnow) then |
74e04d1c | 11524 | per_cu->type_unit_group may not have been set up yet. */ |
0186c6a7 DE |
11525 | if (sig_type->type_unit_group == NULL) |
11526 | sig_type->type_unit_group = get_type_unit_group (cu, attr); | |
11527 | tu_group = sig_type->type_unit_group; | |
f4dc4d17 DE |
11528 | |
11529 | /* If we've already processed this stmt_list there's no real need to | |
11530 | do it again, we could fake it and just recreate the part we need | |
11531 | (file name,index -> symtab mapping). If data shows this optimization | |
11532 | is useful we can do it then. */ | |
43f3e411 | 11533 | first_time = tu_group->compunit_symtab == NULL; |
f4dc4d17 DE |
11534 | |
11535 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
11536 | debug info. */ | |
fff8551c | 11537 | line_header_up lh; |
f4dc4d17 | 11538 | if (attr != NULL) |
3019eac3 | 11539 | { |
9c541725 | 11540 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
f4dc4d17 DE |
11541 | lh = dwarf_decode_line_header (line_offset, cu); |
11542 | } | |
11543 | if (lh == NULL) | |
11544 | { | |
11545 | if (first_time) | |
11546 | dwarf2_start_symtab (cu, "", NULL, 0); | |
11547 | else | |
11548 | { | |
11549 | gdb_assert (tu_group->symtabs == NULL); | |
0ab9ce85 | 11550 | restart_symtab (tu_group->compunit_symtab, "", 0); |
f4dc4d17 | 11551 | } |
f4dc4d17 | 11552 | return; |
3019eac3 DE |
11553 | } |
11554 | ||
4c8aa72d PA |
11555 | cu->line_header = lh.release (); |
11556 | cu->line_header_die_owner = die; | |
3019eac3 | 11557 | |
f4dc4d17 DE |
11558 | if (first_time) |
11559 | { | |
43f3e411 | 11560 | struct compunit_symtab *cust = dwarf2_start_symtab (cu, "", NULL, 0); |
3019eac3 | 11561 | |
1fd60fc0 DE |
11562 | /* Note: We don't assign tu_group->compunit_symtab yet because we're |
11563 | still initializing it, and our caller (a few levels up) | |
11564 | process_full_type_unit still needs to know if this is the first | |
11565 | time. */ | |
11566 | ||
4c8aa72d PA |
11567 | tu_group->num_symtabs = cu->line_header->file_names.size (); |
11568 | tu_group->symtabs = XNEWVEC (struct symtab *, | |
11569 | cu->line_header->file_names.size ()); | |
3019eac3 | 11570 | |
4c8aa72d | 11571 | for (i = 0; i < cu->line_header->file_names.size (); ++i) |
f4dc4d17 | 11572 | { |
4c8aa72d | 11573 | file_entry &fe = cu->line_header->file_names[i]; |
3019eac3 | 11574 | |
4c8aa72d | 11575 | dwarf2_start_subfile (fe.name, fe.include_dir (cu->line_header)); |
3019eac3 | 11576 | |
f4dc4d17 DE |
11577 | if (current_subfile->symtab == NULL) |
11578 | { | |
4c8aa72d PA |
11579 | /* NOTE: start_subfile will recognize when it's been |
11580 | passed a file it has already seen. So we can't | |
11581 | assume there's a simple mapping from | |
11582 | cu->line_header->file_names to subfiles, plus | |
11583 | cu->line_header->file_names may contain dups. */ | |
43f3e411 DE |
11584 | current_subfile->symtab |
11585 | = allocate_symtab (cust, current_subfile->name); | |
f4dc4d17 DE |
11586 | } |
11587 | ||
8c43009f PA |
11588 | fe.symtab = current_subfile->symtab; |
11589 | tu_group->symtabs[i] = fe.symtab; | |
f4dc4d17 DE |
11590 | } |
11591 | } | |
11592 | else | |
3019eac3 | 11593 | { |
0ab9ce85 | 11594 | restart_symtab (tu_group->compunit_symtab, "", 0); |
f4dc4d17 | 11595 | |
4c8aa72d | 11596 | for (i = 0; i < cu->line_header->file_names.size (); ++i) |
f4dc4d17 | 11597 | { |
4c8aa72d | 11598 | file_entry &fe = cu->line_header->file_names[i]; |
f4dc4d17 | 11599 | |
4c8aa72d | 11600 | fe.symtab = tu_group->symtabs[i]; |
f4dc4d17 | 11601 | } |
3019eac3 DE |
11602 | } |
11603 | ||
f4dc4d17 DE |
11604 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
11605 | so they don't have a "real" (so to speak) symtab anyway. | |
11606 | There is later code that will assign the main symtab to all symbols | |
11607 | that don't have one. We need to handle the case of a symbol with a | |
11608 | missing symtab (DW_AT_decl_file) anyway. */ | |
11609 | } | |
3019eac3 | 11610 | |
f4dc4d17 DE |
11611 | /* Process DW_TAG_type_unit. |
11612 | For TUs we want to skip the first top level sibling if it's not the | |
11613 | actual type being defined by this TU. In this case the first top | |
11614 | level sibling is there to provide context only. */ | |
3019eac3 | 11615 | |
f4dc4d17 DE |
11616 | static void |
11617 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
11618 | { | |
11619 | struct die_info *child_die; | |
3019eac3 | 11620 | |
f4dc4d17 DE |
11621 | prepare_one_comp_unit (cu, die, language_minimal); |
11622 | ||
11623 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
11624 | We do this before processing child DIEs, so that the line header table | |
11625 | is available for DW_AT_decl_file. */ | |
11626 | setup_type_unit_groups (die, cu); | |
11627 | ||
11628 | if (die->child != NULL) | |
11629 | { | |
11630 | child_die = die->child; | |
11631 | while (child_die && child_die->tag) | |
11632 | { | |
11633 | process_die (child_die, cu); | |
11634 | child_die = sibling_die (child_die); | |
11635 | } | |
11636 | } | |
3019eac3 DE |
11637 | } |
11638 | \f | |
80626a55 DE |
11639 | /* DWO/DWP files. |
11640 | ||
11641 | http://gcc.gnu.org/wiki/DebugFission | |
11642 | http://gcc.gnu.org/wiki/DebugFissionDWP | |
11643 | ||
11644 | To simplify handling of both DWO files ("object" files with the DWARF info) | |
11645 | and DWP files (a file with the DWOs packaged up into one file), we treat | |
11646 | DWP files as having a collection of virtual DWO files. */ | |
3019eac3 DE |
11647 | |
11648 | static hashval_t | |
11649 | hash_dwo_file (const void *item) | |
11650 | { | |
9a3c8263 | 11651 | const struct dwo_file *dwo_file = (const struct dwo_file *) item; |
a2ce51a0 | 11652 | hashval_t hash; |
3019eac3 | 11653 | |
a2ce51a0 DE |
11654 | hash = htab_hash_string (dwo_file->dwo_name); |
11655 | if (dwo_file->comp_dir != NULL) | |
11656 | hash += htab_hash_string (dwo_file->comp_dir); | |
11657 | return hash; | |
3019eac3 DE |
11658 | } |
11659 | ||
11660 | static int | |
11661 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
11662 | { | |
9a3c8263 SM |
11663 | const struct dwo_file *lhs = (const struct dwo_file *) item_lhs; |
11664 | const struct dwo_file *rhs = (const struct dwo_file *) item_rhs; | |
3019eac3 | 11665 | |
a2ce51a0 DE |
11666 | if (strcmp (lhs->dwo_name, rhs->dwo_name) != 0) |
11667 | return 0; | |
11668 | if (lhs->comp_dir == NULL || rhs->comp_dir == NULL) | |
11669 | return lhs->comp_dir == rhs->comp_dir; | |
11670 | return strcmp (lhs->comp_dir, rhs->comp_dir) == 0; | |
3019eac3 DE |
11671 | } |
11672 | ||
11673 | /* Allocate a hash table for DWO files. */ | |
11674 | ||
11675 | static htab_t | |
ed2dc618 | 11676 | allocate_dwo_file_hash_table (struct objfile *objfile) |
3019eac3 | 11677 | { |
3019eac3 DE |
11678 | return htab_create_alloc_ex (41, |
11679 | hash_dwo_file, | |
11680 | eq_dwo_file, | |
11681 | NULL, | |
11682 | &objfile->objfile_obstack, | |
11683 | hashtab_obstack_allocate, | |
11684 | dummy_obstack_deallocate); | |
11685 | } | |
11686 | ||
80626a55 DE |
11687 | /* Lookup DWO file DWO_NAME. */ |
11688 | ||
11689 | static void ** | |
ed2dc618 SM |
11690 | lookup_dwo_file_slot (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11691 | const char *dwo_name, | |
11692 | const char *comp_dir) | |
80626a55 DE |
11693 | { |
11694 | struct dwo_file find_entry; | |
11695 | void **slot; | |
11696 | ||
11697 | if (dwarf2_per_objfile->dwo_files == NULL) | |
ed2dc618 SM |
11698 | dwarf2_per_objfile->dwo_files |
11699 | = allocate_dwo_file_hash_table (dwarf2_per_objfile->objfile); | |
80626a55 DE |
11700 | |
11701 | memset (&find_entry, 0, sizeof (find_entry)); | |
0ac5b59e DE |
11702 | find_entry.dwo_name = dwo_name; |
11703 | find_entry.comp_dir = comp_dir; | |
80626a55 DE |
11704 | slot = htab_find_slot (dwarf2_per_objfile->dwo_files, &find_entry, INSERT); |
11705 | ||
11706 | return slot; | |
11707 | } | |
11708 | ||
3019eac3 DE |
11709 | static hashval_t |
11710 | hash_dwo_unit (const void *item) | |
11711 | { | |
9a3c8263 | 11712 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 DE |
11713 | |
11714 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
11715 | return dwo_unit->signature; | |
11716 | } | |
11717 | ||
11718 | static int | |
11719 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
11720 | { | |
9a3c8263 SM |
11721 | const struct dwo_unit *lhs = (const struct dwo_unit *) item_lhs; |
11722 | const struct dwo_unit *rhs = (const struct dwo_unit *) item_rhs; | |
3019eac3 DE |
11723 | |
11724 | /* The signature is assumed to be unique within the DWO file. | |
11725 | So while object file CU dwo_id's always have the value zero, | |
11726 | that's OK, assuming each object file DWO file has only one CU, | |
11727 | and that's the rule for now. */ | |
11728 | return lhs->signature == rhs->signature; | |
11729 | } | |
11730 | ||
11731 | /* Allocate a hash table for DWO CUs,TUs. | |
11732 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
11733 | ||
11734 | static htab_t | |
11735 | allocate_dwo_unit_table (struct objfile *objfile) | |
11736 | { | |
11737 | /* Start out with a pretty small number. | |
11738 | Generally DWO files contain only one CU and maybe some TUs. */ | |
11739 | return htab_create_alloc_ex (3, | |
11740 | hash_dwo_unit, | |
11741 | eq_dwo_unit, | |
11742 | NULL, | |
11743 | &objfile->objfile_obstack, | |
11744 | hashtab_obstack_allocate, | |
11745 | dummy_obstack_deallocate); | |
11746 | } | |
11747 | ||
80626a55 | 11748 | /* Structure used to pass data to create_dwo_debug_info_hash_table_reader. */ |
3019eac3 | 11749 | |
19c3d4c9 | 11750 | struct create_dwo_cu_data |
3019eac3 DE |
11751 | { |
11752 | struct dwo_file *dwo_file; | |
19c3d4c9 | 11753 | struct dwo_unit dwo_unit; |
3019eac3 DE |
11754 | }; |
11755 | ||
19c3d4c9 | 11756 | /* die_reader_func for create_dwo_cu. */ |
3019eac3 DE |
11757 | |
11758 | static void | |
19c3d4c9 DE |
11759 | create_dwo_cu_reader (const struct die_reader_specs *reader, |
11760 | const gdb_byte *info_ptr, | |
11761 | struct die_info *comp_unit_die, | |
11762 | int has_children, | |
11763 | void *datap) | |
3019eac3 DE |
11764 | { |
11765 | struct dwarf2_cu *cu = reader->cu; | |
9c541725 | 11766 | sect_offset sect_off = cu->per_cu->sect_off; |
8a0459fd | 11767 | struct dwarf2_section_info *section = cu->per_cu->section; |
9a3c8263 | 11768 | struct create_dwo_cu_data *data = (struct create_dwo_cu_data *) datap; |
3019eac3 | 11769 | struct dwo_file *dwo_file = data->dwo_file; |
19c3d4c9 | 11770 | struct dwo_unit *dwo_unit = &data->dwo_unit; |
3019eac3 | 11771 | struct attribute *attr; |
3019eac3 DE |
11772 | |
11773 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
11774 | if (attr == NULL) | |
11775 | { | |
b98664d3 | 11776 | complaint (_("Dwarf Error: debug entry at offset %s is missing" |
19c3d4c9 | 11777 | " its dwo_id [in module %s]"), |
9d8780f0 | 11778 | sect_offset_str (sect_off), dwo_file->dwo_name); |
3019eac3 DE |
11779 | return; |
11780 | } | |
11781 | ||
3019eac3 DE |
11782 | dwo_unit->dwo_file = dwo_file; |
11783 | dwo_unit->signature = DW_UNSND (attr); | |
8a0459fd | 11784 | dwo_unit->section = section; |
9c541725 | 11785 | dwo_unit->sect_off = sect_off; |
3019eac3 DE |
11786 | dwo_unit->length = cu->per_cu->length; |
11787 | ||
b4f54984 | 11788 | if (dwarf_read_debug) |
9d8780f0 SM |
11789 | fprintf_unfiltered (gdb_stdlog, " offset %s, dwo_id %s\n", |
11790 | sect_offset_str (sect_off), | |
9c541725 | 11791 | hex_string (dwo_unit->signature)); |
3019eac3 DE |
11792 | } |
11793 | ||
33c5cd75 | 11794 | /* Create the dwo_units for the CUs in a DWO_FILE. |
19c3d4c9 | 11795 | Note: This function processes DWO files only, not DWP files. */ |
3019eac3 | 11796 | |
33c5cd75 | 11797 | static void |
ed2dc618 SM |
11798 | create_cus_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11799 | struct dwo_file &dwo_file, dwarf2_section_info §ion, | |
33c5cd75 | 11800 | htab_t &cus_htab) |
3019eac3 DE |
11801 | { |
11802 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
d521ce57 | 11803 | const gdb_byte *info_ptr, *end_ptr; |
3019eac3 | 11804 | |
33c5cd75 DB |
11805 | dwarf2_read_section (objfile, §ion); |
11806 | info_ptr = section.buffer; | |
3019eac3 DE |
11807 | |
11808 | if (info_ptr == NULL) | |
33c5cd75 | 11809 | return; |
3019eac3 | 11810 | |
b4f54984 | 11811 | if (dwarf_read_debug) |
19c3d4c9 DE |
11812 | { |
11813 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", | |
33c5cd75 DB |
11814 | get_section_name (§ion), |
11815 | get_section_file_name (§ion)); | |
19c3d4c9 | 11816 | } |
3019eac3 | 11817 | |
33c5cd75 | 11818 | end_ptr = info_ptr + section.size; |
3019eac3 DE |
11819 | while (info_ptr < end_ptr) |
11820 | { | |
11821 | struct dwarf2_per_cu_data per_cu; | |
33c5cd75 DB |
11822 | struct create_dwo_cu_data create_dwo_cu_data; |
11823 | struct dwo_unit *dwo_unit; | |
11824 | void **slot; | |
11825 | sect_offset sect_off = (sect_offset) (info_ptr - section.buffer); | |
3019eac3 | 11826 | |
19c3d4c9 DE |
11827 | memset (&create_dwo_cu_data.dwo_unit, 0, |
11828 | sizeof (create_dwo_cu_data.dwo_unit)); | |
3019eac3 | 11829 | memset (&per_cu, 0, sizeof (per_cu)); |
e3b94546 | 11830 | per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
3019eac3 | 11831 | per_cu.is_debug_types = 0; |
33c5cd75 DB |
11832 | per_cu.sect_off = sect_offset (info_ptr - section.buffer); |
11833 | per_cu.section = §ion; | |
c5ed0576 | 11834 | create_dwo_cu_data.dwo_file = &dwo_file; |
33c5cd75 DB |
11835 | |
11836 | init_cutu_and_read_dies_no_follow ( | |
11837 | &per_cu, &dwo_file, create_dwo_cu_reader, &create_dwo_cu_data); | |
11838 | info_ptr += per_cu.length; | |
11839 | ||
11840 | // If the unit could not be parsed, skip it. | |
11841 | if (create_dwo_cu_data.dwo_unit.dwo_file == NULL) | |
11842 | continue; | |
3019eac3 | 11843 | |
33c5cd75 DB |
11844 | if (cus_htab == NULL) |
11845 | cus_htab = allocate_dwo_unit_table (objfile); | |
19c3d4c9 | 11846 | |
33c5cd75 DB |
11847 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); |
11848 | *dwo_unit = create_dwo_cu_data.dwo_unit; | |
11849 | slot = htab_find_slot (cus_htab, dwo_unit, INSERT); | |
11850 | gdb_assert (slot != NULL); | |
11851 | if (*slot != NULL) | |
19c3d4c9 | 11852 | { |
33c5cd75 DB |
11853 | const struct dwo_unit *dup_cu = (const struct dwo_unit *)*slot; |
11854 | sect_offset dup_sect_off = dup_cu->sect_off; | |
19c3d4c9 | 11855 | |
b98664d3 | 11856 | complaint (_("debug cu entry at offset %s is duplicate to" |
9d8780f0 SM |
11857 | " the entry at offset %s, signature %s"), |
11858 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
33c5cd75 | 11859 | hex_string (dwo_unit->signature)); |
19c3d4c9 | 11860 | } |
33c5cd75 | 11861 | *slot = (void *)dwo_unit; |
3019eac3 | 11862 | } |
3019eac3 DE |
11863 | } |
11864 | ||
80626a55 DE |
11865 | /* DWP file .debug_{cu,tu}_index section format: |
11866 | [ref: http://gcc.gnu.org/wiki/DebugFissionDWP] | |
11867 | ||
d2415c6c DE |
11868 | DWP Version 1: |
11869 | ||
80626a55 DE |
11870 | Both index sections have the same format, and serve to map a 64-bit |
11871 | signature to a set of section numbers. Each section begins with a header, | |
11872 | followed by a hash table of 64-bit signatures, a parallel table of 32-bit | |
11873 | indexes, and a pool of 32-bit section numbers. The index sections will be | |
11874 | aligned at 8-byte boundaries in the file. | |
11875 | ||
d2415c6c DE |
11876 | The index section header consists of: |
11877 | ||
11878 | V, 32 bit version number | |
11879 | -, 32 bits unused | |
11880 | N, 32 bit number of compilation units or type units in the index | |
11881 | M, 32 bit number of slots in the hash table | |
80626a55 | 11882 | |
d2415c6c | 11883 | Numbers are recorded using the byte order of the application binary. |
80626a55 | 11884 | |
d2415c6c DE |
11885 | The hash table begins at offset 16 in the section, and consists of an array |
11886 | of M 64-bit slots. Each slot contains a 64-bit signature (using the byte | |
11887 | order of the application binary). Unused slots in the hash table are 0. | |
11888 | (We rely on the extreme unlikeliness of a signature being exactly 0.) | |
80626a55 | 11889 | |
d2415c6c DE |
11890 | The parallel table begins immediately after the hash table |
11891 | (at offset 16 + 8 * M from the beginning of the section), and consists of an | |
11892 | array of 32-bit indexes (using the byte order of the application binary), | |
11893 | corresponding 1-1 with slots in the hash table. Each entry in the parallel | |
11894 | table contains a 32-bit index into the pool of section numbers. For unused | |
11895 | hash table slots, the corresponding entry in the parallel table will be 0. | |
80626a55 | 11896 | |
73869dc2 DE |
11897 | The pool of section numbers begins immediately following the hash table |
11898 | (at offset 16 + 12 * M from the beginning of the section). The pool of | |
11899 | section numbers consists of an array of 32-bit words (using the byte order | |
11900 | of the application binary). Each item in the array is indexed starting | |
11901 | from 0. The hash table entry provides the index of the first section | |
11902 | number in the set. Additional section numbers in the set follow, and the | |
11903 | set is terminated by a 0 entry (section number 0 is not used in ELF). | |
11904 | ||
11905 | In each set of section numbers, the .debug_info.dwo or .debug_types.dwo | |
11906 | section must be the first entry in the set, and the .debug_abbrev.dwo must | |
11907 | be the second entry. Other members of the set may follow in any order. | |
11908 | ||
11909 | --- | |
11910 | ||
11911 | DWP Version 2: | |
11912 | ||
11913 | DWP Version 2 combines all the .debug_info, etc. sections into one, | |
11914 | and the entries in the index tables are now offsets into these sections. | |
11915 | CU offsets begin at 0. TU offsets begin at the size of the .debug_info | |
11916 | section. | |
11917 | ||
11918 | Index Section Contents: | |
11919 | Header | |
11920 | Hash Table of Signatures dwp_hash_table.hash_table | |
11921 | Parallel Table of Indices dwp_hash_table.unit_table | |
11922 | Table of Section Offsets dwp_hash_table.v2.{section_ids,offsets} | |
11923 | Table of Section Sizes dwp_hash_table.v2.sizes | |
11924 | ||
11925 | The index section header consists of: | |
11926 | ||
11927 | V, 32 bit version number | |
11928 | L, 32 bit number of columns in the table of section offsets | |
11929 | N, 32 bit number of compilation units or type units in the index | |
11930 | M, 32 bit number of slots in the hash table | |
11931 | ||
11932 | Numbers are recorded using the byte order of the application binary. | |
11933 | ||
11934 | The hash table has the same format as version 1. | |
11935 | The parallel table of indices has the same format as version 1, | |
11936 | except that the entries are origin-1 indices into the table of sections | |
11937 | offsets and the table of section sizes. | |
11938 | ||
11939 | The table of offsets begins immediately following the parallel table | |
11940 | (at offset 16 + 12 * M from the beginning of the section). The table is | |
11941 | a two-dimensional array of 32-bit words (using the byte order of the | |
11942 | application binary), with L columns and N+1 rows, in row-major order. | |
11943 | Each row in the array is indexed starting from 0. The first row provides | |
11944 | a key to the remaining rows: each column in this row provides an identifier | |
11945 | for a debug section, and the offsets in the same column of subsequent rows | |
11946 | refer to that section. The section identifiers are: | |
11947 | ||
11948 | DW_SECT_INFO 1 .debug_info.dwo | |
11949 | DW_SECT_TYPES 2 .debug_types.dwo | |
11950 | DW_SECT_ABBREV 3 .debug_abbrev.dwo | |
11951 | DW_SECT_LINE 4 .debug_line.dwo | |
11952 | DW_SECT_LOC 5 .debug_loc.dwo | |
11953 | DW_SECT_STR_OFFSETS 6 .debug_str_offsets.dwo | |
11954 | DW_SECT_MACINFO 7 .debug_macinfo.dwo | |
11955 | DW_SECT_MACRO 8 .debug_macro.dwo | |
11956 | ||
11957 | The offsets provided by the CU and TU index sections are the base offsets | |
11958 | for the contributions made by each CU or TU to the corresponding section | |
11959 | in the package file. Each CU and TU header contains an abbrev_offset | |
11960 | field, used to find the abbreviations table for that CU or TU within the | |
11961 | contribution to the .debug_abbrev.dwo section for that CU or TU, and should | |
11962 | be interpreted as relative to the base offset given in the index section. | |
11963 | Likewise, offsets into .debug_line.dwo from DW_AT_stmt_list attributes | |
11964 | should be interpreted as relative to the base offset for .debug_line.dwo, | |
11965 | and offsets into other debug sections obtained from DWARF attributes should | |
11966 | also be interpreted as relative to the corresponding base offset. | |
11967 | ||
11968 | The table of sizes begins immediately following the table of offsets. | |
11969 | Like the table of offsets, it is a two-dimensional array of 32-bit words, | |
11970 | with L columns and N rows, in row-major order. Each row in the array is | |
11971 | indexed starting from 1 (row 0 is shared by the two tables). | |
11972 | ||
11973 | --- | |
11974 | ||
11975 | Hash table lookup is handled the same in version 1 and 2: | |
11976 | ||
11977 | We assume that N and M will not exceed 2^32 - 1. | |
11978 | The size of the hash table, M, must be 2^k such that 2^k > 3*N/2. | |
11979 | ||
d2415c6c DE |
11980 | Given a 64-bit compilation unit signature or a type signature S, an entry |
11981 | in the hash table is located as follows: | |
80626a55 | 11982 | |
d2415c6c DE |
11983 | 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with |
11984 | the low-order k bits all set to 1. | |
80626a55 | 11985 | |
d2415c6c | 11986 | 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1). |
80626a55 | 11987 | |
d2415c6c DE |
11988 | 3) If the hash table entry at index H matches the signature, use that |
11989 | entry. If the hash table entry at index H is unused (all zeroes), | |
11990 | terminate the search: the signature is not present in the table. | |
80626a55 | 11991 | |
d2415c6c | 11992 | 4) Let H = (H + H') modulo M. Repeat at Step 3. |
80626a55 | 11993 | |
d2415c6c | 11994 | Because M > N and H' and M are relatively prime, the search is guaranteed |
73869dc2 | 11995 | to stop at an unused slot or find the match. */ |
80626a55 DE |
11996 | |
11997 | /* Create a hash table to map DWO IDs to their CU/TU entry in | |
11998 | .debug_{info,types}.dwo in DWP_FILE. | |
11999 | Returns NULL if there isn't one. | |
12000 | Note: This function processes DWP files only, not DWO files. */ | |
12001 | ||
12002 | static struct dwp_hash_table * | |
ed2dc618 SM |
12003 | create_dwp_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12004 | struct dwp_file *dwp_file, int is_debug_types) | |
80626a55 DE |
12005 | { |
12006 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
400174b1 | 12007 | bfd *dbfd = dwp_file->dbfd.get (); |
948f8e3d | 12008 | const gdb_byte *index_ptr, *index_end; |
80626a55 | 12009 | struct dwarf2_section_info *index; |
73869dc2 | 12010 | uint32_t version, nr_columns, nr_units, nr_slots; |
80626a55 DE |
12011 | struct dwp_hash_table *htab; |
12012 | ||
12013 | if (is_debug_types) | |
12014 | index = &dwp_file->sections.tu_index; | |
12015 | else | |
12016 | index = &dwp_file->sections.cu_index; | |
12017 | ||
12018 | if (dwarf2_section_empty_p (index)) | |
12019 | return NULL; | |
12020 | dwarf2_read_section (objfile, index); | |
12021 | ||
12022 | index_ptr = index->buffer; | |
12023 | index_end = index_ptr + index->size; | |
12024 | ||
12025 | version = read_4_bytes (dbfd, index_ptr); | |
73869dc2 DE |
12026 | index_ptr += 4; |
12027 | if (version == 2) | |
12028 | nr_columns = read_4_bytes (dbfd, index_ptr); | |
12029 | else | |
12030 | nr_columns = 0; | |
12031 | index_ptr += 4; | |
80626a55 DE |
12032 | nr_units = read_4_bytes (dbfd, index_ptr); |
12033 | index_ptr += 4; | |
12034 | nr_slots = read_4_bytes (dbfd, index_ptr); | |
12035 | index_ptr += 4; | |
12036 | ||
73869dc2 | 12037 | if (version != 1 && version != 2) |
80626a55 | 12038 | { |
21aa081e | 12039 | error (_("Dwarf Error: unsupported DWP file version (%s)" |
80626a55 | 12040 | " [in module %s]"), |
21aa081e | 12041 | pulongest (version), dwp_file->name); |
80626a55 DE |
12042 | } |
12043 | if (nr_slots != (nr_slots & -nr_slots)) | |
12044 | { | |
21aa081e | 12045 | error (_("Dwarf Error: number of slots in DWP hash table (%s)" |
80626a55 | 12046 | " is not power of 2 [in module %s]"), |
21aa081e | 12047 | pulongest (nr_slots), dwp_file->name); |
80626a55 DE |
12048 | } |
12049 | ||
12050 | htab = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_hash_table); | |
73869dc2 DE |
12051 | htab->version = version; |
12052 | htab->nr_columns = nr_columns; | |
80626a55 DE |
12053 | htab->nr_units = nr_units; |
12054 | htab->nr_slots = nr_slots; | |
12055 | htab->hash_table = index_ptr; | |
12056 | htab->unit_table = htab->hash_table + sizeof (uint64_t) * nr_slots; | |
73869dc2 DE |
12057 | |
12058 | /* Exit early if the table is empty. */ | |
12059 | if (nr_slots == 0 || nr_units == 0 | |
12060 | || (version == 2 && nr_columns == 0)) | |
12061 | { | |
12062 | /* All must be zero. */ | |
12063 | if (nr_slots != 0 || nr_units != 0 | |
12064 | || (version == 2 && nr_columns != 0)) | |
12065 | { | |
b98664d3 | 12066 | complaint (_("Empty DWP but nr_slots,nr_units,nr_columns not" |
73869dc2 DE |
12067 | " all zero [in modules %s]"), |
12068 | dwp_file->name); | |
12069 | } | |
12070 | return htab; | |
12071 | } | |
12072 | ||
12073 | if (version == 1) | |
12074 | { | |
12075 | htab->section_pool.v1.indices = | |
12076 | htab->unit_table + sizeof (uint32_t) * nr_slots; | |
12077 | /* It's harder to decide whether the section is too small in v1. | |
12078 | V1 is deprecated anyway so we punt. */ | |
12079 | } | |
12080 | else | |
12081 | { | |
12082 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
12083 | int *ids = htab->section_pool.v2.section_ids; | |
12084 | /* Reverse map for error checking. */ | |
12085 | int ids_seen[DW_SECT_MAX + 1]; | |
12086 | int i; | |
12087 | ||
12088 | if (nr_columns < 2) | |
12089 | { | |
12090 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
12091 | " in section table [in module %s]"), | |
12092 | dwp_file->name); | |
12093 | } | |
12094 | if (nr_columns > MAX_NR_V2_DWO_SECTIONS) | |
12095 | { | |
12096 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
12097 | " in section table [in module %s]"), | |
12098 | dwp_file->name); | |
12099 | } | |
12100 | memset (ids, 255, (DW_SECT_MAX + 1) * sizeof (int32_t)); | |
12101 | memset (ids_seen, 255, (DW_SECT_MAX + 1) * sizeof (int32_t)); | |
12102 | for (i = 0; i < nr_columns; ++i) | |
12103 | { | |
12104 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
12105 | ||
12106 | if (id < DW_SECT_MIN || id > DW_SECT_MAX) | |
12107 | { | |
12108 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
12109 | " in section table [in module %s]"), | |
12110 | id, dwp_file->name); | |
12111 | } | |
12112 | if (ids_seen[id] != -1) | |
12113 | { | |
12114 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
12115 | " id %d in section table [in module %s]"), | |
12116 | id, dwp_file->name); | |
12117 | } | |
12118 | ids_seen[id] = i; | |
12119 | ids[i] = id; | |
12120 | } | |
12121 | /* Must have exactly one info or types section. */ | |
12122 | if (((ids_seen[DW_SECT_INFO] != -1) | |
12123 | + (ids_seen[DW_SECT_TYPES] != -1)) | |
12124 | != 1) | |
12125 | { | |
12126 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
12127 | " DWO info/types section [in module %s]"), | |
12128 | dwp_file->name); | |
12129 | } | |
12130 | /* Must have an abbrev section. */ | |
12131 | if (ids_seen[DW_SECT_ABBREV] == -1) | |
12132 | { | |
12133 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
12134 | " section [in module %s]"), | |
12135 | dwp_file->name); | |
12136 | } | |
12137 | htab->section_pool.v2.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
12138 | htab->section_pool.v2.sizes = | |
12139 | htab->section_pool.v2.offsets + (sizeof (uint32_t) | |
12140 | * nr_units * nr_columns); | |
12141 | if ((htab->section_pool.v2.sizes + (sizeof (uint32_t) | |
12142 | * nr_units * nr_columns)) | |
12143 | > index_end) | |
12144 | { | |
12145 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
12146 | " [in module %s]"), | |
12147 | dwp_file->name); | |
12148 | } | |
12149 | } | |
80626a55 DE |
12150 | |
12151 | return htab; | |
12152 | } | |
12153 | ||
12154 | /* Update SECTIONS with the data from SECTP. | |
12155 | ||
12156 | This function is like the other "locate" section routines that are | |
12157 | passed to bfd_map_over_sections, but in this context the sections to | |
73869dc2 | 12158 | read comes from the DWP V1 hash table, not the full ELF section table. |
80626a55 DE |
12159 | |
12160 | The result is non-zero for success, or zero if an error was found. */ | |
12161 | ||
12162 | static int | |
73869dc2 DE |
12163 | locate_v1_virtual_dwo_sections (asection *sectp, |
12164 | struct virtual_v1_dwo_sections *sections) | |
80626a55 DE |
12165 | { |
12166 | const struct dwop_section_names *names = &dwop_section_names; | |
12167 | ||
12168 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12169 | { | |
12170 | /* There can be only one. */ | |
049412e3 | 12171 | if (sections->abbrev.s.section != NULL) |
80626a55 | 12172 | return 0; |
049412e3 | 12173 | sections->abbrev.s.section = sectp; |
80626a55 DE |
12174 | sections->abbrev.size = bfd_get_section_size (sectp); |
12175 | } | |
12176 | else if (section_is_p (sectp->name, &names->info_dwo) | |
12177 | || section_is_p (sectp->name, &names->types_dwo)) | |
12178 | { | |
12179 | /* There can be only one. */ | |
049412e3 | 12180 | if (sections->info_or_types.s.section != NULL) |
80626a55 | 12181 | return 0; |
049412e3 | 12182 | sections->info_or_types.s.section = sectp; |
80626a55 DE |
12183 | sections->info_or_types.size = bfd_get_section_size (sectp); |
12184 | } | |
12185 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12186 | { | |
12187 | /* There can be only one. */ | |
049412e3 | 12188 | if (sections->line.s.section != NULL) |
80626a55 | 12189 | return 0; |
049412e3 | 12190 | sections->line.s.section = sectp; |
80626a55 DE |
12191 | sections->line.size = bfd_get_section_size (sectp); |
12192 | } | |
12193 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12194 | { | |
12195 | /* There can be only one. */ | |
049412e3 | 12196 | if (sections->loc.s.section != NULL) |
80626a55 | 12197 | return 0; |
049412e3 | 12198 | sections->loc.s.section = sectp; |
80626a55 DE |
12199 | sections->loc.size = bfd_get_section_size (sectp); |
12200 | } | |
12201 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
12202 | { | |
12203 | /* There can be only one. */ | |
049412e3 | 12204 | if (sections->macinfo.s.section != NULL) |
80626a55 | 12205 | return 0; |
049412e3 | 12206 | sections->macinfo.s.section = sectp; |
80626a55 DE |
12207 | sections->macinfo.size = bfd_get_section_size (sectp); |
12208 | } | |
12209 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12210 | { | |
12211 | /* There can be only one. */ | |
049412e3 | 12212 | if (sections->macro.s.section != NULL) |
80626a55 | 12213 | return 0; |
049412e3 | 12214 | sections->macro.s.section = sectp; |
80626a55 DE |
12215 | sections->macro.size = bfd_get_section_size (sectp); |
12216 | } | |
12217 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12218 | { | |
12219 | /* There can be only one. */ | |
049412e3 | 12220 | if (sections->str_offsets.s.section != NULL) |
80626a55 | 12221 | return 0; |
049412e3 | 12222 | sections->str_offsets.s.section = sectp; |
80626a55 DE |
12223 | sections->str_offsets.size = bfd_get_section_size (sectp); |
12224 | } | |
12225 | else | |
12226 | { | |
12227 | /* No other kind of section is valid. */ | |
12228 | return 0; | |
12229 | } | |
12230 | ||
12231 | return 1; | |
12232 | } | |
12233 | ||
73869dc2 DE |
12234 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. |
12235 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12236 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12237 | This is for DWP version 1 files. */ | |
80626a55 DE |
12238 | |
12239 | static struct dwo_unit * | |
ed2dc618 SM |
12240 | create_dwo_unit_in_dwp_v1 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12241 | struct dwp_file *dwp_file, | |
73869dc2 DE |
12242 | uint32_t unit_index, |
12243 | const char *comp_dir, | |
12244 | ULONGEST signature, int is_debug_types) | |
80626a55 DE |
12245 | { |
12246 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
73869dc2 DE |
12247 | const struct dwp_hash_table *dwp_htab = |
12248 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12249 | bfd *dbfd = dwp_file->dbfd.get (); |
80626a55 DE |
12250 | const char *kind = is_debug_types ? "TU" : "CU"; |
12251 | struct dwo_file *dwo_file; | |
12252 | struct dwo_unit *dwo_unit; | |
73869dc2 | 12253 | struct virtual_v1_dwo_sections sections; |
80626a55 | 12254 | void **dwo_file_slot; |
80626a55 DE |
12255 | int i; |
12256 | ||
73869dc2 DE |
12257 | gdb_assert (dwp_file->version == 1); |
12258 | ||
b4f54984 | 12259 | if (dwarf_read_debug) |
80626a55 | 12260 | { |
73869dc2 | 12261 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V1 file: %s\n", |
80626a55 | 12262 | kind, |
73869dc2 | 12263 | pulongest (unit_index), hex_string (signature), |
80626a55 DE |
12264 | dwp_file->name); |
12265 | } | |
12266 | ||
19ac8c2e | 12267 | /* Fetch the sections of this DWO unit. |
80626a55 DE |
12268 | Put a limit on the number of sections we look for so that bad data |
12269 | doesn't cause us to loop forever. */ | |
12270 | ||
73869dc2 | 12271 | #define MAX_NR_V1_DWO_SECTIONS \ |
80626a55 DE |
12272 | (1 /* .debug_info or .debug_types */ \ |
12273 | + 1 /* .debug_abbrev */ \ | |
12274 | + 1 /* .debug_line */ \ | |
12275 | + 1 /* .debug_loc */ \ | |
12276 | + 1 /* .debug_str_offsets */ \ | |
19ac8c2e | 12277 | + 1 /* .debug_macro or .debug_macinfo */ \ |
80626a55 DE |
12278 | + 1 /* trailing zero */) |
12279 | ||
12280 | memset (§ions, 0, sizeof (sections)); | |
80626a55 | 12281 | |
73869dc2 | 12282 | for (i = 0; i < MAX_NR_V1_DWO_SECTIONS; ++i) |
80626a55 DE |
12283 | { |
12284 | asection *sectp; | |
12285 | uint32_t section_nr = | |
12286 | read_4_bytes (dbfd, | |
73869dc2 DE |
12287 | dwp_htab->section_pool.v1.indices |
12288 | + (unit_index + i) * sizeof (uint32_t)); | |
80626a55 DE |
12289 | |
12290 | if (section_nr == 0) | |
12291 | break; | |
12292 | if (section_nr >= dwp_file->num_sections) | |
12293 | { | |
12294 | error (_("Dwarf Error: bad DWP hash table, section number too large" | |
12295 | " [in module %s]"), | |
12296 | dwp_file->name); | |
12297 | } | |
12298 | ||
12299 | sectp = dwp_file->elf_sections[section_nr]; | |
73869dc2 | 12300 | if (! locate_v1_virtual_dwo_sections (sectp, §ions)) |
80626a55 DE |
12301 | { |
12302 | error (_("Dwarf Error: bad DWP hash table, invalid section found" | |
12303 | " [in module %s]"), | |
12304 | dwp_file->name); | |
12305 | } | |
12306 | } | |
12307 | ||
12308 | if (i < 2 | |
a32a8923 DE |
12309 | || dwarf2_section_empty_p (§ions.info_or_types) |
12310 | || dwarf2_section_empty_p (§ions.abbrev)) | |
80626a55 DE |
12311 | { |
12312 | error (_("Dwarf Error: bad DWP hash table, missing DWO sections" | |
12313 | " [in module %s]"), | |
12314 | dwp_file->name); | |
12315 | } | |
73869dc2 | 12316 | if (i == MAX_NR_V1_DWO_SECTIONS) |
80626a55 DE |
12317 | { |
12318 | error (_("Dwarf Error: bad DWP hash table, too many DWO sections" | |
12319 | " [in module %s]"), | |
12320 | dwp_file->name); | |
12321 | } | |
12322 | ||
12323 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12324 | have dwo_unit "live" in that. At least for now. | |
12325 | ||
12326 | The DWP file can be made up of a random collection of CUs and TUs. | |
c766f7ec | 12327 | However, for each CU + set of TUs that came from the same original DWO |
57d63ce2 DE |
12328 | file, we can combine them back into a virtual DWO file to save space |
12329 | (fewer struct dwo_file objects to allocate). Remember that for really | |
80626a55 DE |
12330 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ |
12331 | ||
791afaa2 TT |
12332 | std::string virtual_dwo_name = |
12333 | string_printf ("virtual-dwo/%d-%d-%d-%d", | |
12334 | get_section_id (§ions.abbrev), | |
12335 | get_section_id (§ions.line), | |
12336 | get_section_id (§ions.loc), | |
12337 | get_section_id (§ions.str_offsets)); | |
80626a55 | 12338 | /* Can we use an existing virtual DWO file? */ |
ed2dc618 SM |
12339 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
12340 | virtual_dwo_name.c_str (), | |
12341 | comp_dir); | |
80626a55 DE |
12342 | /* Create one if necessary. */ |
12343 | if (*dwo_file_slot == NULL) | |
12344 | { | |
b4f54984 | 12345 | if (dwarf_read_debug) |
80626a55 DE |
12346 | { |
12347 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 12348 | virtual_dwo_name.c_str ()); |
80626a55 DE |
12349 | } |
12350 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
224c3ddb SM |
12351 | dwo_file->dwo_name |
12352 | = (const char *) obstack_copy0 (&objfile->objfile_obstack, | |
791afaa2 TT |
12353 | virtual_dwo_name.c_str (), |
12354 | virtual_dwo_name.size ()); | |
0ac5b59e | 12355 | dwo_file->comp_dir = comp_dir; |
80626a55 DE |
12356 | dwo_file->sections.abbrev = sections.abbrev; |
12357 | dwo_file->sections.line = sections.line; | |
12358 | dwo_file->sections.loc = sections.loc; | |
12359 | dwo_file->sections.macinfo = sections.macinfo; | |
12360 | dwo_file->sections.macro = sections.macro; | |
12361 | dwo_file->sections.str_offsets = sections.str_offsets; | |
12362 | /* The "str" section is global to the entire DWP file. */ | |
12363 | dwo_file->sections.str = dwp_file->sections.str; | |
57d63ce2 | 12364 | /* The info or types section is assigned below to dwo_unit, |
80626a55 DE |
12365 | there's no need to record it in dwo_file. |
12366 | Also, we can't simply record type sections in dwo_file because | |
12367 | we record a pointer into the vector in dwo_unit. As we collect more | |
12368 | types we'll grow the vector and eventually have to reallocate space | |
57d63ce2 DE |
12369 | for it, invalidating all copies of pointers into the previous |
12370 | contents. */ | |
80626a55 DE |
12371 | *dwo_file_slot = dwo_file; |
12372 | } | |
12373 | else | |
12374 | { | |
b4f54984 | 12375 | if (dwarf_read_debug) |
80626a55 DE |
12376 | { |
12377 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 12378 | virtual_dwo_name.c_str ()); |
80626a55 | 12379 | } |
9a3c8263 | 12380 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
80626a55 | 12381 | } |
80626a55 DE |
12382 | |
12383 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
12384 | dwo_unit->dwo_file = dwo_file; | |
12385 | dwo_unit->signature = signature; | |
8d749320 SM |
12386 | dwo_unit->section = |
12387 | XOBNEW (&objfile->objfile_obstack, struct dwarf2_section_info); | |
8a0459fd | 12388 | *dwo_unit->section = sections.info_or_types; |
57d63ce2 | 12389 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
80626a55 DE |
12390 | |
12391 | return dwo_unit; | |
12392 | } | |
12393 | ||
73869dc2 DE |
12394 | /* Subroutine of create_dwo_unit_in_dwp_v2 to simplify it. |
12395 | Given a pointer to the containing section SECTION, and OFFSET,SIZE of the | |
12396 | piece within that section used by a TU/CU, return a virtual section | |
12397 | of just that piece. */ | |
12398 | ||
12399 | static struct dwarf2_section_info | |
ed2dc618 SM |
12400 | create_dwp_v2_section (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12401 | struct dwarf2_section_info *section, | |
73869dc2 DE |
12402 | bfd_size_type offset, bfd_size_type size) |
12403 | { | |
12404 | struct dwarf2_section_info result; | |
12405 | asection *sectp; | |
12406 | ||
12407 | gdb_assert (section != NULL); | |
12408 | gdb_assert (!section->is_virtual); | |
12409 | ||
12410 | memset (&result, 0, sizeof (result)); | |
12411 | result.s.containing_section = section; | |
12412 | result.is_virtual = 1; | |
12413 | ||
12414 | if (size == 0) | |
12415 | return result; | |
12416 | ||
12417 | sectp = get_section_bfd_section (section); | |
12418 | ||
12419 | /* Flag an error if the piece denoted by OFFSET,SIZE is outside the | |
12420 | bounds of the real section. This is a pretty-rare event, so just | |
12421 | flag an error (easier) instead of a warning and trying to cope. */ | |
12422 | if (sectp == NULL | |
12423 | || offset + size > bfd_get_section_size (sectp)) | |
12424 | { | |
73869dc2 DE |
12425 | error (_("Dwarf Error: Bad DWP V2 section info, doesn't fit" |
12426 | " in section %s [in module %s]"), | |
12427 | sectp ? bfd_section_name (abfd, sectp) : "<unknown>", | |
12428 | objfile_name (dwarf2_per_objfile->objfile)); | |
12429 | } | |
12430 | ||
12431 | result.virtual_offset = offset; | |
12432 | result.size = size; | |
12433 | return result; | |
12434 | } | |
12435 | ||
12436 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
12437 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12438 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12439 | This is for DWP version 2 files. */ | |
12440 | ||
12441 | static struct dwo_unit * | |
ed2dc618 SM |
12442 | create_dwo_unit_in_dwp_v2 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12443 | struct dwp_file *dwp_file, | |
73869dc2 DE |
12444 | uint32_t unit_index, |
12445 | const char *comp_dir, | |
12446 | ULONGEST signature, int is_debug_types) | |
12447 | { | |
12448 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
12449 | const struct dwp_hash_table *dwp_htab = | |
12450 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12451 | bfd *dbfd = dwp_file->dbfd.get (); |
73869dc2 DE |
12452 | const char *kind = is_debug_types ? "TU" : "CU"; |
12453 | struct dwo_file *dwo_file; | |
12454 | struct dwo_unit *dwo_unit; | |
12455 | struct virtual_v2_dwo_sections sections; | |
12456 | void **dwo_file_slot; | |
73869dc2 DE |
12457 | int i; |
12458 | ||
12459 | gdb_assert (dwp_file->version == 2); | |
12460 | ||
b4f54984 | 12461 | if (dwarf_read_debug) |
73869dc2 DE |
12462 | { |
12463 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V2 file: %s\n", | |
12464 | kind, | |
12465 | pulongest (unit_index), hex_string (signature), | |
12466 | dwp_file->name); | |
12467 | } | |
12468 | ||
12469 | /* Fetch the section offsets of this DWO unit. */ | |
12470 | ||
12471 | memset (§ions, 0, sizeof (sections)); | |
73869dc2 DE |
12472 | |
12473 | for (i = 0; i < dwp_htab->nr_columns; ++i) | |
12474 | { | |
12475 | uint32_t offset = read_4_bytes (dbfd, | |
12476 | dwp_htab->section_pool.v2.offsets | |
12477 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12478 | + i) | |
12479 | * sizeof (uint32_t))); | |
12480 | uint32_t size = read_4_bytes (dbfd, | |
12481 | dwp_htab->section_pool.v2.sizes | |
12482 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12483 | + i) | |
12484 | * sizeof (uint32_t))); | |
12485 | ||
12486 | switch (dwp_htab->section_pool.v2.section_ids[i]) | |
12487 | { | |
12488 | case DW_SECT_INFO: | |
12489 | case DW_SECT_TYPES: | |
12490 | sections.info_or_types_offset = offset; | |
12491 | sections.info_or_types_size = size; | |
12492 | break; | |
12493 | case DW_SECT_ABBREV: | |
12494 | sections.abbrev_offset = offset; | |
12495 | sections.abbrev_size = size; | |
12496 | break; | |
12497 | case DW_SECT_LINE: | |
12498 | sections.line_offset = offset; | |
12499 | sections.line_size = size; | |
12500 | break; | |
12501 | case DW_SECT_LOC: | |
12502 | sections.loc_offset = offset; | |
12503 | sections.loc_size = size; | |
12504 | break; | |
12505 | case DW_SECT_STR_OFFSETS: | |
12506 | sections.str_offsets_offset = offset; | |
12507 | sections.str_offsets_size = size; | |
12508 | break; | |
12509 | case DW_SECT_MACINFO: | |
12510 | sections.macinfo_offset = offset; | |
12511 | sections.macinfo_size = size; | |
12512 | break; | |
12513 | case DW_SECT_MACRO: | |
12514 | sections.macro_offset = offset; | |
12515 | sections.macro_size = size; | |
12516 | break; | |
12517 | } | |
12518 | } | |
12519 | ||
12520 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12521 | have dwo_unit "live" in that. At least for now. | |
12522 | ||
12523 | The DWP file can be made up of a random collection of CUs and TUs. | |
12524 | However, for each CU + set of TUs that came from the same original DWO | |
12525 | file, we can combine them back into a virtual DWO file to save space | |
12526 | (fewer struct dwo_file objects to allocate). Remember that for really | |
12527 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
12528 | ||
791afaa2 TT |
12529 | std::string virtual_dwo_name = |
12530 | string_printf ("virtual-dwo/%ld-%ld-%ld-%ld", | |
12531 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), | |
12532 | (long) (sections.line_size ? sections.line_offset : 0), | |
12533 | (long) (sections.loc_size ? sections.loc_offset : 0), | |
12534 | (long) (sections.str_offsets_size | |
12535 | ? sections.str_offsets_offset : 0)); | |
73869dc2 | 12536 | /* Can we use an existing virtual DWO file? */ |
ed2dc618 SM |
12537 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
12538 | virtual_dwo_name.c_str (), | |
12539 | comp_dir); | |
73869dc2 DE |
12540 | /* Create one if necessary. */ |
12541 | if (*dwo_file_slot == NULL) | |
12542 | { | |
b4f54984 | 12543 | if (dwarf_read_debug) |
73869dc2 DE |
12544 | { |
12545 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 12546 | virtual_dwo_name.c_str ()); |
73869dc2 DE |
12547 | } |
12548 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
224c3ddb SM |
12549 | dwo_file->dwo_name |
12550 | = (const char *) obstack_copy0 (&objfile->objfile_obstack, | |
791afaa2 TT |
12551 | virtual_dwo_name.c_str (), |
12552 | virtual_dwo_name.size ()); | |
73869dc2 DE |
12553 | dwo_file->comp_dir = comp_dir; |
12554 | dwo_file->sections.abbrev = | |
ed2dc618 | 12555 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.abbrev, |
73869dc2 DE |
12556 | sections.abbrev_offset, sections.abbrev_size); |
12557 | dwo_file->sections.line = | |
ed2dc618 | 12558 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.line, |
73869dc2 DE |
12559 | sections.line_offset, sections.line_size); |
12560 | dwo_file->sections.loc = | |
ed2dc618 | 12561 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.loc, |
73869dc2 DE |
12562 | sections.loc_offset, sections.loc_size); |
12563 | dwo_file->sections.macinfo = | |
ed2dc618 | 12564 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.macinfo, |
73869dc2 DE |
12565 | sections.macinfo_offset, sections.macinfo_size); |
12566 | dwo_file->sections.macro = | |
ed2dc618 | 12567 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.macro, |
73869dc2 DE |
12568 | sections.macro_offset, sections.macro_size); |
12569 | dwo_file->sections.str_offsets = | |
ed2dc618 SM |
12570 | create_dwp_v2_section (dwarf2_per_objfile, |
12571 | &dwp_file->sections.str_offsets, | |
73869dc2 DE |
12572 | sections.str_offsets_offset, |
12573 | sections.str_offsets_size); | |
12574 | /* The "str" section is global to the entire DWP file. */ | |
12575 | dwo_file->sections.str = dwp_file->sections.str; | |
12576 | /* The info or types section is assigned below to dwo_unit, | |
12577 | there's no need to record it in dwo_file. | |
12578 | Also, we can't simply record type sections in dwo_file because | |
12579 | we record a pointer into the vector in dwo_unit. As we collect more | |
12580 | types we'll grow the vector and eventually have to reallocate space | |
12581 | for it, invalidating all copies of pointers into the previous | |
12582 | contents. */ | |
12583 | *dwo_file_slot = dwo_file; | |
12584 | } | |
12585 | else | |
12586 | { | |
b4f54984 | 12587 | if (dwarf_read_debug) |
73869dc2 DE |
12588 | { |
12589 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 12590 | virtual_dwo_name.c_str ()); |
73869dc2 | 12591 | } |
9a3c8263 | 12592 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
73869dc2 | 12593 | } |
73869dc2 DE |
12594 | |
12595 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
12596 | dwo_unit->dwo_file = dwo_file; | |
12597 | dwo_unit->signature = signature; | |
8d749320 SM |
12598 | dwo_unit->section = |
12599 | XOBNEW (&objfile->objfile_obstack, struct dwarf2_section_info); | |
ed2dc618 SM |
12600 | *dwo_unit->section = create_dwp_v2_section (dwarf2_per_objfile, |
12601 | is_debug_types | |
73869dc2 DE |
12602 | ? &dwp_file->sections.types |
12603 | : &dwp_file->sections.info, | |
12604 | sections.info_or_types_offset, | |
12605 | sections.info_or_types_size); | |
12606 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ | |
12607 | ||
12608 | return dwo_unit; | |
12609 | } | |
12610 | ||
57d63ce2 DE |
12611 | /* Lookup the DWO unit with SIGNATURE in DWP_FILE. |
12612 | Returns NULL if the signature isn't found. */ | |
80626a55 DE |
12613 | |
12614 | static struct dwo_unit * | |
ed2dc618 SM |
12615 | lookup_dwo_unit_in_dwp (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12616 | struct dwp_file *dwp_file, const char *comp_dir, | |
57d63ce2 | 12617 | ULONGEST signature, int is_debug_types) |
80626a55 | 12618 | { |
57d63ce2 DE |
12619 | const struct dwp_hash_table *dwp_htab = |
12620 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12621 | bfd *dbfd = dwp_file->dbfd.get (); |
57d63ce2 | 12622 | uint32_t mask = dwp_htab->nr_slots - 1; |
80626a55 DE |
12623 | uint32_t hash = signature & mask; |
12624 | uint32_t hash2 = ((signature >> 32) & mask) | 1; | |
12625 | unsigned int i; | |
12626 | void **slot; | |
870f88f7 | 12627 | struct dwo_unit find_dwo_cu; |
80626a55 DE |
12628 | |
12629 | memset (&find_dwo_cu, 0, sizeof (find_dwo_cu)); | |
12630 | find_dwo_cu.signature = signature; | |
19ac8c2e DE |
12631 | slot = htab_find_slot (is_debug_types |
12632 | ? dwp_file->loaded_tus | |
12633 | : dwp_file->loaded_cus, | |
12634 | &find_dwo_cu, INSERT); | |
80626a55 DE |
12635 | |
12636 | if (*slot != NULL) | |
9a3c8263 | 12637 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12638 | |
12639 | /* Use a for loop so that we don't loop forever on bad debug info. */ | |
57d63ce2 | 12640 | for (i = 0; i < dwp_htab->nr_slots; ++i) |
80626a55 DE |
12641 | { |
12642 | ULONGEST signature_in_table; | |
12643 | ||
12644 | signature_in_table = | |
57d63ce2 | 12645 | read_8_bytes (dbfd, dwp_htab->hash_table + hash * sizeof (uint64_t)); |
80626a55 DE |
12646 | if (signature_in_table == signature) |
12647 | { | |
57d63ce2 DE |
12648 | uint32_t unit_index = |
12649 | read_4_bytes (dbfd, | |
12650 | dwp_htab->unit_table + hash * sizeof (uint32_t)); | |
80626a55 | 12651 | |
73869dc2 DE |
12652 | if (dwp_file->version == 1) |
12653 | { | |
ed2dc618 SM |
12654 | *slot = create_dwo_unit_in_dwp_v1 (dwarf2_per_objfile, |
12655 | dwp_file, unit_index, | |
73869dc2 DE |
12656 | comp_dir, signature, |
12657 | is_debug_types); | |
12658 | } | |
12659 | else | |
12660 | { | |
ed2dc618 SM |
12661 | *slot = create_dwo_unit_in_dwp_v2 (dwarf2_per_objfile, |
12662 | dwp_file, unit_index, | |
73869dc2 DE |
12663 | comp_dir, signature, |
12664 | is_debug_types); | |
12665 | } | |
9a3c8263 | 12666 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12667 | } |
12668 | if (signature_in_table == 0) | |
12669 | return NULL; | |
12670 | hash = (hash + hash2) & mask; | |
12671 | } | |
12672 | ||
12673 | error (_("Dwarf Error: bad DWP hash table, lookup didn't terminate" | |
12674 | " [in module %s]"), | |
12675 | dwp_file->name); | |
12676 | } | |
12677 | ||
ab5088bf | 12678 | /* Subroutine of open_dwo_file,open_dwp_file to simplify them. |
3019eac3 DE |
12679 | Open the file specified by FILE_NAME and hand it off to BFD for |
12680 | preliminary analysis. Return a newly initialized bfd *, which | |
12681 | includes a canonicalized copy of FILE_NAME. | |
80626a55 | 12682 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
6ac97d4c DE |
12683 | SEARCH_CWD is true if the current directory is to be searched. |
12684 | It will be searched before debug-file-directory. | |
13aaf454 DE |
12685 | If successful, the file is added to the bfd include table of the |
12686 | objfile's bfd (see gdb_bfd_record_inclusion). | |
6ac97d4c | 12687 | If unable to find/open the file, return NULL. |
3019eac3 DE |
12688 | NOTE: This function is derived from symfile_bfd_open. */ |
12689 | ||
192b62ce | 12690 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
12691 | try_open_dwop_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12692 | const char *file_name, int is_dwp, int search_cwd) | |
3019eac3 | 12693 | { |
24b9144d | 12694 | int desc; |
9c02c129 DE |
12695 | /* Blech. OPF_TRY_CWD_FIRST also disables searching the path list if |
12696 | FILE_NAME contains a '/'. So we can't use it. Instead prepend "." | |
12697 | to debug_file_directory. */ | |
e0cc99a6 | 12698 | const char *search_path; |
9c02c129 DE |
12699 | static const char dirname_separator_string[] = { DIRNAME_SEPARATOR, '\0' }; |
12700 | ||
e0cc99a6 | 12701 | gdb::unique_xmalloc_ptr<char> search_path_holder; |
6ac97d4c DE |
12702 | if (search_cwd) |
12703 | { | |
12704 | if (*debug_file_directory != '\0') | |
e0cc99a6 TT |
12705 | { |
12706 | search_path_holder.reset (concat (".", dirname_separator_string, | |
12707 | debug_file_directory, | |
12708 | (char *) NULL)); | |
12709 | search_path = search_path_holder.get (); | |
12710 | } | |
6ac97d4c | 12711 | else |
e0cc99a6 | 12712 | search_path = "."; |
6ac97d4c | 12713 | } |
9c02c129 | 12714 | else |
e0cc99a6 | 12715 | search_path = debug_file_directory; |
3019eac3 | 12716 | |
24b9144d | 12717 | openp_flags flags = OPF_RETURN_REALPATH; |
80626a55 DE |
12718 | if (is_dwp) |
12719 | flags |= OPF_SEARCH_IN_PATH; | |
e0cc99a6 TT |
12720 | |
12721 | gdb::unique_xmalloc_ptr<char> absolute_name; | |
9c02c129 | 12722 | desc = openp (search_path, flags, file_name, |
3019eac3 DE |
12723 | O_RDONLY | O_BINARY, &absolute_name); |
12724 | if (desc < 0) | |
12725 | return NULL; | |
12726 | ||
e0cc99a6 TT |
12727 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (absolute_name.get (), |
12728 | gnutarget, desc)); | |
9c02c129 DE |
12729 | if (sym_bfd == NULL) |
12730 | return NULL; | |
192b62ce | 12731 | bfd_set_cacheable (sym_bfd.get (), 1); |
3019eac3 | 12732 | |
192b62ce TT |
12733 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
12734 | return NULL; | |
3019eac3 | 12735 | |
13aaf454 DE |
12736 | /* Success. Record the bfd as having been included by the objfile's bfd. |
12737 | This is important because things like demangled_names_hash lives in the | |
12738 | objfile's per_bfd space and may have references to things like symbol | |
12739 | names that live in the DWO/DWP file's per_bfd space. PR 16426. */ | |
192b62ce | 12740 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, sym_bfd.get ()); |
13aaf454 | 12741 | |
3019eac3 DE |
12742 | return sym_bfd; |
12743 | } | |
12744 | ||
ab5088bf | 12745 | /* Try to open DWO file FILE_NAME. |
3019eac3 DE |
12746 | COMP_DIR is the DW_AT_comp_dir attribute. |
12747 | The result is the bfd handle of the file. | |
12748 | If there is a problem finding or opening the file, return NULL. | |
12749 | Upon success, the canonicalized path of the file is stored in the bfd, | |
12750 | same as symfile_bfd_open. */ | |
12751 | ||
192b62ce | 12752 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
12753 | open_dwo_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12754 | const char *file_name, const char *comp_dir) | |
3019eac3 | 12755 | { |
80626a55 | 12756 | if (IS_ABSOLUTE_PATH (file_name)) |
ed2dc618 SM |
12757 | return try_open_dwop_file (dwarf2_per_objfile, file_name, |
12758 | 0 /*is_dwp*/, 0 /*search_cwd*/); | |
3019eac3 DE |
12759 | |
12760 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
12761 | ||
12762 | if (comp_dir != NULL) | |
12763 | { | |
b36cec19 PA |
12764 | char *path_to_try = concat (comp_dir, SLASH_STRING, |
12765 | file_name, (char *) NULL); | |
3019eac3 DE |
12766 | |
12767 | /* NOTE: If comp_dir is a relative path, this will also try the | |
12768 | search path, which seems useful. */ | |
ed2dc618 SM |
12769 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (dwarf2_per_objfile, |
12770 | path_to_try, | |
12771 | 0 /*is_dwp*/, | |
192b62ce | 12772 | 1 /*search_cwd*/)); |
3019eac3 DE |
12773 | xfree (path_to_try); |
12774 | if (abfd != NULL) | |
12775 | return abfd; | |
12776 | } | |
12777 | ||
12778 | /* That didn't work, try debug-file-directory, which, despite its name, | |
12779 | is a list of paths. */ | |
12780 | ||
12781 | if (*debug_file_directory == '\0') | |
12782 | return NULL; | |
12783 | ||
ed2dc618 SM |
12784 | return try_open_dwop_file (dwarf2_per_objfile, file_name, |
12785 | 0 /*is_dwp*/, 1 /*search_cwd*/); | |
3019eac3 DE |
12786 | } |
12787 | ||
80626a55 DE |
12788 | /* This function is mapped across the sections and remembers the offset and |
12789 | size of each of the DWO debugging sections we are interested in. */ | |
12790 | ||
12791 | static void | |
12792 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, void *dwo_sections_ptr) | |
12793 | { | |
9a3c8263 | 12794 | struct dwo_sections *dwo_sections = (struct dwo_sections *) dwo_sections_ptr; |
80626a55 DE |
12795 | const struct dwop_section_names *names = &dwop_section_names; |
12796 | ||
12797 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12798 | { | |
049412e3 | 12799 | dwo_sections->abbrev.s.section = sectp; |
80626a55 DE |
12800 | dwo_sections->abbrev.size = bfd_get_section_size (sectp); |
12801 | } | |
12802 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12803 | { | |
049412e3 | 12804 | dwo_sections->info.s.section = sectp; |
80626a55 DE |
12805 | dwo_sections->info.size = bfd_get_section_size (sectp); |
12806 | } | |
12807 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12808 | { | |
049412e3 | 12809 | dwo_sections->line.s.section = sectp; |
80626a55 DE |
12810 | dwo_sections->line.size = bfd_get_section_size (sectp); |
12811 | } | |
12812 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12813 | { | |
049412e3 | 12814 | dwo_sections->loc.s.section = sectp; |
80626a55 DE |
12815 | dwo_sections->loc.size = bfd_get_section_size (sectp); |
12816 | } | |
12817 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
12818 | { | |
049412e3 | 12819 | dwo_sections->macinfo.s.section = sectp; |
80626a55 DE |
12820 | dwo_sections->macinfo.size = bfd_get_section_size (sectp); |
12821 | } | |
12822 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12823 | { | |
049412e3 | 12824 | dwo_sections->macro.s.section = sectp; |
80626a55 DE |
12825 | dwo_sections->macro.size = bfd_get_section_size (sectp); |
12826 | } | |
12827 | else if (section_is_p (sectp->name, &names->str_dwo)) | |
12828 | { | |
049412e3 | 12829 | dwo_sections->str.s.section = sectp; |
80626a55 DE |
12830 | dwo_sections->str.size = bfd_get_section_size (sectp); |
12831 | } | |
12832 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12833 | { | |
049412e3 | 12834 | dwo_sections->str_offsets.s.section = sectp; |
80626a55 DE |
12835 | dwo_sections->str_offsets.size = bfd_get_section_size (sectp); |
12836 | } | |
12837 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
12838 | { | |
12839 | struct dwarf2_section_info type_section; | |
12840 | ||
12841 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 12842 | type_section.s.section = sectp; |
80626a55 DE |
12843 | type_section.size = bfd_get_section_size (sectp); |
12844 | VEC_safe_push (dwarf2_section_info_def, dwo_sections->types, | |
12845 | &type_section); | |
12846 | } | |
12847 | } | |
12848 | ||
ab5088bf | 12849 | /* Initialize the use of the DWO file specified by DWO_NAME and referenced |
19c3d4c9 | 12850 | by PER_CU. This is for the non-DWP case. |
80626a55 | 12851 | The result is NULL if DWO_NAME can't be found. */ |
3019eac3 DE |
12852 | |
12853 | static struct dwo_file * | |
0ac5b59e DE |
12854 | open_and_init_dwo_file (struct dwarf2_per_cu_data *per_cu, |
12855 | const char *dwo_name, const char *comp_dir) | |
3019eac3 | 12856 | { |
ed2dc618 | 12857 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
3019eac3 | 12858 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 | 12859 | |
ed2dc618 | 12860 | gdb_bfd_ref_ptr dbfd (open_dwo_file (dwarf2_per_objfile, dwo_name, comp_dir)); |
80626a55 DE |
12861 | if (dbfd == NULL) |
12862 | { | |
b4f54984 | 12863 | if (dwarf_read_debug) |
80626a55 DE |
12864 | fprintf_unfiltered (gdb_stdlog, "DWO file not found: %s\n", dwo_name); |
12865 | return NULL; | |
12866 | } | |
263db9a1 TT |
12867 | |
12868 | /* We use a unique pointer here, despite the obstack allocation, | |
12869 | because a dwo_file needs some cleanup if it is abandoned. */ | |
12870 | dwo_file_up dwo_file (OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
12871 | struct dwo_file)); | |
0ac5b59e DE |
12872 | dwo_file->dwo_name = dwo_name; |
12873 | dwo_file->comp_dir = comp_dir; | |
192b62ce | 12874 | dwo_file->dbfd = dbfd.release (); |
3019eac3 | 12875 | |
192b62ce TT |
12876 | bfd_map_over_sections (dwo_file->dbfd, dwarf2_locate_dwo_sections, |
12877 | &dwo_file->sections); | |
3019eac3 | 12878 | |
ed2dc618 SM |
12879 | create_cus_hash_table (dwarf2_per_objfile, *dwo_file, dwo_file->sections.info, |
12880 | dwo_file->cus); | |
3019eac3 | 12881 | |
263db9a1 | 12882 | create_debug_types_hash_table (dwarf2_per_objfile, dwo_file.get (), |
ed2dc618 | 12883 | dwo_file->sections.types, dwo_file->tus); |
3019eac3 | 12884 | |
b4f54984 | 12885 | if (dwarf_read_debug) |
80626a55 DE |
12886 | fprintf_unfiltered (gdb_stdlog, "DWO file found: %s\n", dwo_name); |
12887 | ||
263db9a1 | 12888 | return dwo_file.release (); |
3019eac3 DE |
12889 | } |
12890 | ||
80626a55 | 12891 | /* This function is mapped across the sections and remembers the offset and |
73869dc2 DE |
12892 | size of each of the DWP debugging sections common to version 1 and 2 that |
12893 | we are interested in. */ | |
3019eac3 | 12894 | |
80626a55 | 12895 | static void |
73869dc2 DE |
12896 | dwarf2_locate_common_dwp_sections (bfd *abfd, asection *sectp, |
12897 | void *dwp_file_ptr) | |
3019eac3 | 12898 | { |
9a3c8263 | 12899 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
80626a55 DE |
12900 | const struct dwop_section_names *names = &dwop_section_names; |
12901 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
3019eac3 | 12902 | |
80626a55 | 12903 | /* Record the ELF section number for later lookup: this is what the |
73869dc2 | 12904 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ |
80626a55 DE |
12905 | gdb_assert (elf_section_nr < dwp_file->num_sections); |
12906 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
3019eac3 | 12907 | |
80626a55 DE |
12908 | /* Look for specific sections that we need. */ |
12909 | if (section_is_p (sectp->name, &names->str_dwo)) | |
12910 | { | |
049412e3 | 12911 | dwp_file->sections.str.s.section = sectp; |
80626a55 DE |
12912 | dwp_file->sections.str.size = bfd_get_section_size (sectp); |
12913 | } | |
12914 | else if (section_is_p (sectp->name, &names->cu_index)) | |
12915 | { | |
049412e3 | 12916 | dwp_file->sections.cu_index.s.section = sectp; |
80626a55 DE |
12917 | dwp_file->sections.cu_index.size = bfd_get_section_size (sectp); |
12918 | } | |
12919 | else if (section_is_p (sectp->name, &names->tu_index)) | |
12920 | { | |
049412e3 | 12921 | dwp_file->sections.tu_index.s.section = sectp; |
80626a55 DE |
12922 | dwp_file->sections.tu_index.size = bfd_get_section_size (sectp); |
12923 | } | |
12924 | } | |
3019eac3 | 12925 | |
73869dc2 DE |
12926 | /* This function is mapped across the sections and remembers the offset and |
12927 | size of each of the DWP version 2 debugging sections that we are interested | |
12928 | in. This is split into a separate function because we don't know if we | |
12929 | have version 1 or 2 until we parse the cu_index/tu_index sections. */ | |
12930 | ||
12931 | static void | |
12932 | dwarf2_locate_v2_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
12933 | { | |
9a3c8263 | 12934 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
73869dc2 DE |
12935 | const struct dwop_section_names *names = &dwop_section_names; |
12936 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
12937 | ||
12938 | /* Record the ELF section number for later lookup: this is what the | |
12939 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
12940 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
12941 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
12942 | ||
12943 | /* Look for specific sections that we need. */ | |
12944 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12945 | { | |
049412e3 | 12946 | dwp_file->sections.abbrev.s.section = sectp; |
73869dc2 DE |
12947 | dwp_file->sections.abbrev.size = bfd_get_section_size (sectp); |
12948 | } | |
12949 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12950 | { | |
049412e3 | 12951 | dwp_file->sections.info.s.section = sectp; |
73869dc2 DE |
12952 | dwp_file->sections.info.size = bfd_get_section_size (sectp); |
12953 | } | |
12954 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12955 | { | |
049412e3 | 12956 | dwp_file->sections.line.s.section = sectp; |
73869dc2 DE |
12957 | dwp_file->sections.line.size = bfd_get_section_size (sectp); |
12958 | } | |
12959 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12960 | { | |
049412e3 | 12961 | dwp_file->sections.loc.s.section = sectp; |
73869dc2 DE |
12962 | dwp_file->sections.loc.size = bfd_get_section_size (sectp); |
12963 | } | |
12964 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
12965 | { | |
049412e3 | 12966 | dwp_file->sections.macinfo.s.section = sectp; |
73869dc2 DE |
12967 | dwp_file->sections.macinfo.size = bfd_get_section_size (sectp); |
12968 | } | |
12969 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12970 | { | |
049412e3 | 12971 | dwp_file->sections.macro.s.section = sectp; |
73869dc2 DE |
12972 | dwp_file->sections.macro.size = bfd_get_section_size (sectp); |
12973 | } | |
12974 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12975 | { | |
049412e3 | 12976 | dwp_file->sections.str_offsets.s.section = sectp; |
73869dc2 DE |
12977 | dwp_file->sections.str_offsets.size = bfd_get_section_size (sectp); |
12978 | } | |
12979 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
12980 | { | |
049412e3 | 12981 | dwp_file->sections.types.s.section = sectp; |
73869dc2 DE |
12982 | dwp_file->sections.types.size = bfd_get_section_size (sectp); |
12983 | } | |
12984 | } | |
12985 | ||
80626a55 | 12986 | /* Hash function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12987 | |
80626a55 DE |
12988 | static hashval_t |
12989 | hash_dwp_loaded_cutus (const void *item) | |
12990 | { | |
9a3c8263 | 12991 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 | 12992 | |
80626a55 DE |
12993 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
12994 | return dwo_unit->signature; | |
3019eac3 DE |
12995 | } |
12996 | ||
80626a55 | 12997 | /* Equality function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 12998 | |
80626a55 DE |
12999 | static int |
13000 | eq_dwp_loaded_cutus (const void *a, const void *b) | |
3019eac3 | 13001 | { |
9a3c8263 SM |
13002 | const struct dwo_unit *dua = (const struct dwo_unit *) a; |
13003 | const struct dwo_unit *dub = (const struct dwo_unit *) b; | |
3019eac3 | 13004 | |
80626a55 DE |
13005 | return dua->signature == dub->signature; |
13006 | } | |
3019eac3 | 13007 | |
80626a55 | 13008 | /* Allocate a hash table for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13009 | |
80626a55 DE |
13010 | static htab_t |
13011 | allocate_dwp_loaded_cutus_table (struct objfile *objfile) | |
13012 | { | |
13013 | return htab_create_alloc_ex (3, | |
13014 | hash_dwp_loaded_cutus, | |
13015 | eq_dwp_loaded_cutus, | |
13016 | NULL, | |
13017 | &objfile->objfile_obstack, | |
13018 | hashtab_obstack_allocate, | |
13019 | dummy_obstack_deallocate); | |
13020 | } | |
3019eac3 | 13021 | |
ab5088bf DE |
13022 | /* Try to open DWP file FILE_NAME. |
13023 | The result is the bfd handle of the file. | |
13024 | If there is a problem finding or opening the file, return NULL. | |
13025 | Upon success, the canonicalized path of the file is stored in the bfd, | |
13026 | same as symfile_bfd_open. */ | |
13027 | ||
192b62ce | 13028 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
13029 | open_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
13030 | const char *file_name) | |
ab5088bf | 13031 | { |
ed2dc618 SM |
13032 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (dwarf2_per_objfile, file_name, |
13033 | 1 /*is_dwp*/, | |
192b62ce | 13034 | 1 /*search_cwd*/)); |
6ac97d4c DE |
13035 | if (abfd != NULL) |
13036 | return abfd; | |
13037 | ||
13038 | /* Work around upstream bug 15652. | |
13039 | http://sourceware.org/bugzilla/show_bug.cgi?id=15652 | |
13040 | [Whether that's a "bug" is debatable, but it is getting in our way.] | |
13041 | We have no real idea where the dwp file is, because gdb's realpath-ing | |
13042 | of the executable's path may have discarded the needed info. | |
13043 | [IWBN if the dwp file name was recorded in the executable, akin to | |
13044 | .gnu_debuglink, but that doesn't exist yet.] | |
13045 | Strip the directory from FILE_NAME and search again. */ | |
13046 | if (*debug_file_directory != '\0') | |
13047 | { | |
13048 | /* Don't implicitly search the current directory here. | |
13049 | If the user wants to search "." to handle this case, | |
13050 | it must be added to debug-file-directory. */ | |
ed2dc618 SM |
13051 | return try_open_dwop_file (dwarf2_per_objfile, |
13052 | lbasename (file_name), 1 /*is_dwp*/, | |
6ac97d4c DE |
13053 | 0 /*search_cwd*/); |
13054 | } | |
13055 | ||
13056 | return NULL; | |
ab5088bf DE |
13057 | } |
13058 | ||
80626a55 DE |
13059 | /* Initialize the use of the DWP file for the current objfile. |
13060 | By convention the name of the DWP file is ${objfile}.dwp. | |
13061 | The result is NULL if it can't be found. */ | |
a766d390 | 13062 | |
400174b1 | 13063 | static std::unique_ptr<struct dwp_file> |
ed2dc618 | 13064 | open_and_init_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
80626a55 DE |
13065 | { |
13066 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
80626a55 | 13067 | |
82bf32bc JK |
13068 | /* Try to find first .dwp for the binary file before any symbolic links |
13069 | resolving. */ | |
6c447423 DE |
13070 | |
13071 | /* If the objfile is a debug file, find the name of the real binary | |
13072 | file and get the name of dwp file from there. */ | |
d721ba37 | 13073 | std::string dwp_name; |
6c447423 DE |
13074 | if (objfile->separate_debug_objfile_backlink != NULL) |
13075 | { | |
13076 | struct objfile *backlink = objfile->separate_debug_objfile_backlink; | |
13077 | const char *backlink_basename = lbasename (backlink->original_name); | |
6c447423 | 13078 | |
d721ba37 | 13079 | dwp_name = ldirname (objfile->original_name) + SLASH_STRING + backlink_basename; |
6c447423 DE |
13080 | } |
13081 | else | |
d721ba37 PA |
13082 | dwp_name = objfile->original_name; |
13083 | ||
13084 | dwp_name += ".dwp"; | |
80626a55 | 13085 | |
ed2dc618 | 13086 | gdb_bfd_ref_ptr dbfd (open_dwp_file (dwarf2_per_objfile, dwp_name.c_str ())); |
82bf32bc JK |
13087 | if (dbfd == NULL |
13088 | && strcmp (objfile->original_name, objfile_name (objfile)) != 0) | |
13089 | { | |
13090 | /* Try to find .dwp for the binary file after gdb_realpath resolving. */ | |
d721ba37 PA |
13091 | dwp_name = objfile_name (objfile); |
13092 | dwp_name += ".dwp"; | |
ed2dc618 | 13093 | dbfd = open_dwp_file (dwarf2_per_objfile, dwp_name.c_str ()); |
82bf32bc JK |
13094 | } |
13095 | ||
80626a55 DE |
13096 | if (dbfd == NULL) |
13097 | { | |
b4f54984 | 13098 | if (dwarf_read_debug) |
d721ba37 | 13099 | fprintf_unfiltered (gdb_stdlog, "DWP file not found: %s\n", dwp_name.c_str ()); |
400174b1 | 13100 | return std::unique_ptr<dwp_file> (); |
3019eac3 | 13101 | } |
400174b1 TT |
13102 | |
13103 | const char *name = bfd_get_filename (dbfd.get ()); | |
13104 | std::unique_ptr<struct dwp_file> dwp_file | |
13105 | (new struct dwp_file (name, std::move (dbfd))); | |
c906108c | 13106 | |
80626a55 | 13107 | /* +1: section 0 is unused */ |
192b62ce | 13108 | dwp_file->num_sections = bfd_count_sections (dwp_file->dbfd) + 1; |
80626a55 DE |
13109 | dwp_file->elf_sections = |
13110 | OBSTACK_CALLOC (&objfile->objfile_obstack, | |
13111 | dwp_file->num_sections, asection *); | |
13112 | ||
400174b1 TT |
13113 | bfd_map_over_sections (dwp_file->dbfd.get (), |
13114 | dwarf2_locate_common_dwp_sections, | |
13115 | dwp_file.get ()); | |
80626a55 | 13116 | |
400174b1 TT |
13117 | dwp_file->cus = create_dwp_hash_table (dwarf2_per_objfile, dwp_file.get (), |
13118 | 0); | |
80626a55 | 13119 | |
400174b1 TT |
13120 | dwp_file->tus = create_dwp_hash_table (dwarf2_per_objfile, dwp_file.get (), |
13121 | 1); | |
80626a55 | 13122 | |
73869dc2 | 13123 | /* The DWP file version is stored in the hash table. Oh well. */ |
08302ed2 DE |
13124 | if (dwp_file->cus && dwp_file->tus |
13125 | && dwp_file->cus->version != dwp_file->tus->version) | |
73869dc2 DE |
13126 | { |
13127 | /* Technically speaking, we should try to limp along, but this is | |
fbcbc3fd | 13128 | pretty bizarre. We use pulongest here because that's the established |
4d65956b | 13129 | portability solution (e.g, we cannot use %u for uint32_t). */ |
fbcbc3fd DE |
13130 | error (_("Dwarf Error: DWP file CU version %s doesn't match" |
13131 | " TU version %s [in DWP file %s]"), | |
13132 | pulongest (dwp_file->cus->version), | |
d721ba37 | 13133 | pulongest (dwp_file->tus->version), dwp_name.c_str ()); |
73869dc2 | 13134 | } |
08302ed2 DE |
13135 | |
13136 | if (dwp_file->cus) | |
13137 | dwp_file->version = dwp_file->cus->version; | |
13138 | else if (dwp_file->tus) | |
13139 | dwp_file->version = dwp_file->tus->version; | |
13140 | else | |
13141 | dwp_file->version = 2; | |
73869dc2 DE |
13142 | |
13143 | if (dwp_file->version == 2) | |
400174b1 TT |
13144 | bfd_map_over_sections (dwp_file->dbfd.get (), |
13145 | dwarf2_locate_v2_dwp_sections, | |
13146 | dwp_file.get ()); | |
73869dc2 | 13147 | |
19ac8c2e DE |
13148 | dwp_file->loaded_cus = allocate_dwp_loaded_cutus_table (objfile); |
13149 | dwp_file->loaded_tus = allocate_dwp_loaded_cutus_table (objfile); | |
80626a55 | 13150 | |
b4f54984 | 13151 | if (dwarf_read_debug) |
80626a55 DE |
13152 | { |
13153 | fprintf_unfiltered (gdb_stdlog, "DWP file found: %s\n", dwp_file->name); | |
13154 | fprintf_unfiltered (gdb_stdlog, | |
21aa081e PA |
13155 | " %s CUs, %s TUs\n", |
13156 | pulongest (dwp_file->cus ? dwp_file->cus->nr_units : 0), | |
13157 | pulongest (dwp_file->tus ? dwp_file->tus->nr_units : 0)); | |
80626a55 DE |
13158 | } |
13159 | ||
13160 | return dwp_file; | |
3019eac3 | 13161 | } |
c906108c | 13162 | |
ab5088bf DE |
13163 | /* Wrapper around open_and_init_dwp_file, only open it once. */ |
13164 | ||
13165 | static struct dwp_file * | |
ed2dc618 | 13166 | get_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
ab5088bf DE |
13167 | { |
13168 | if (! dwarf2_per_objfile->dwp_checked) | |
13169 | { | |
ed2dc618 SM |
13170 | dwarf2_per_objfile->dwp_file |
13171 | = open_and_init_dwp_file (dwarf2_per_objfile); | |
ab5088bf DE |
13172 | dwarf2_per_objfile->dwp_checked = 1; |
13173 | } | |
400174b1 | 13174 | return dwarf2_per_objfile->dwp_file.get (); |
ab5088bf DE |
13175 | } |
13176 | ||
80626a55 DE |
13177 | /* Subroutine of lookup_dwo_comp_unit, lookup_dwo_type_unit. |
13178 | Look up the CU/TU with signature SIGNATURE, either in DWO file DWO_NAME | |
13179 | or in the DWP file for the objfile, referenced by THIS_UNIT. | |
3019eac3 | 13180 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. |
80626a55 DE |
13181 | IS_DEBUG_TYPES is non-zero if reading a TU, otherwise read a CU. |
13182 | ||
13183 | This is called, for example, when wanting to read a variable with a | |
13184 | complex location. Therefore we don't want to do file i/o for every call. | |
13185 | Therefore we don't want to look for a DWO file on every call. | |
13186 | Therefore we first see if we've already seen SIGNATURE in a DWP file, | |
13187 | then we check if we've already seen DWO_NAME, and only THEN do we check | |
13188 | for a DWO file. | |
13189 | ||
1c658ad5 | 13190 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
80626a55 | 13191 | (dwo_id mismatch or couldn't find the DWO/DWP file). */ |
debd256d | 13192 | |
3019eac3 | 13193 | static struct dwo_unit * |
80626a55 DE |
13194 | lookup_dwo_cutu (struct dwarf2_per_cu_data *this_unit, |
13195 | const char *dwo_name, const char *comp_dir, | |
13196 | ULONGEST signature, int is_debug_types) | |
3019eac3 | 13197 | { |
ed2dc618 | 13198 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_unit->dwarf2_per_objfile; |
3019eac3 | 13199 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
80626a55 DE |
13200 | const char *kind = is_debug_types ? "TU" : "CU"; |
13201 | void **dwo_file_slot; | |
3019eac3 | 13202 | struct dwo_file *dwo_file; |
80626a55 | 13203 | struct dwp_file *dwp_file; |
cb1df416 | 13204 | |
6a506a2d DE |
13205 | /* First see if there's a DWP file. |
13206 | If we have a DWP file but didn't find the DWO inside it, don't | |
13207 | look for the original DWO file. It makes gdb behave differently | |
13208 | depending on whether one is debugging in the build tree. */ | |
cf2c3c16 | 13209 | |
ed2dc618 | 13210 | dwp_file = get_dwp_file (dwarf2_per_objfile); |
80626a55 | 13211 | if (dwp_file != NULL) |
cf2c3c16 | 13212 | { |
80626a55 DE |
13213 | const struct dwp_hash_table *dwp_htab = |
13214 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
13215 | ||
13216 | if (dwp_htab != NULL) | |
13217 | { | |
13218 | struct dwo_unit *dwo_cutu = | |
ed2dc618 | 13219 | lookup_dwo_unit_in_dwp (dwarf2_per_objfile, dwp_file, comp_dir, |
57d63ce2 | 13220 | signature, is_debug_types); |
80626a55 DE |
13221 | |
13222 | if (dwo_cutu != NULL) | |
13223 | { | |
b4f54984 | 13224 | if (dwarf_read_debug) |
80626a55 DE |
13225 | { |
13226 | fprintf_unfiltered (gdb_stdlog, | |
13227 | "Virtual DWO %s %s found: @%s\n", | |
13228 | kind, hex_string (signature), | |
13229 | host_address_to_string (dwo_cutu)); | |
13230 | } | |
13231 | return dwo_cutu; | |
13232 | } | |
13233 | } | |
13234 | } | |
6a506a2d | 13235 | else |
80626a55 | 13236 | { |
6a506a2d | 13237 | /* No DWP file, look for the DWO file. */ |
80626a55 | 13238 | |
ed2dc618 SM |
13239 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
13240 | dwo_name, comp_dir); | |
6a506a2d | 13241 | if (*dwo_file_slot == NULL) |
80626a55 | 13242 | { |
6a506a2d DE |
13243 | /* Read in the file and build a table of the CUs/TUs it contains. */ |
13244 | *dwo_file_slot = open_and_init_dwo_file (this_unit, dwo_name, comp_dir); | |
19c3d4c9 | 13245 | } |
6a506a2d | 13246 | /* NOTE: This will be NULL if unable to open the file. */ |
9a3c8263 | 13247 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
3019eac3 | 13248 | |
6a506a2d | 13249 | if (dwo_file != NULL) |
19c3d4c9 | 13250 | { |
6a506a2d DE |
13251 | struct dwo_unit *dwo_cutu = NULL; |
13252 | ||
13253 | if (is_debug_types && dwo_file->tus) | |
13254 | { | |
13255 | struct dwo_unit find_dwo_cutu; | |
13256 | ||
13257 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
13258 | find_dwo_cutu.signature = signature; | |
9a3c8263 SM |
13259 | dwo_cutu |
13260 | = (struct dwo_unit *) htab_find (dwo_file->tus, &find_dwo_cutu); | |
6a506a2d | 13261 | } |
33c5cd75 | 13262 | else if (!is_debug_types && dwo_file->cus) |
80626a55 | 13263 | { |
33c5cd75 DB |
13264 | struct dwo_unit find_dwo_cutu; |
13265 | ||
13266 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
13267 | find_dwo_cutu.signature = signature; | |
13268 | dwo_cutu = (struct dwo_unit *)htab_find (dwo_file->cus, | |
13269 | &find_dwo_cutu); | |
6a506a2d DE |
13270 | } |
13271 | ||
13272 | if (dwo_cutu != NULL) | |
13273 | { | |
b4f54984 | 13274 | if (dwarf_read_debug) |
6a506a2d DE |
13275 | { |
13276 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) found: @%s\n", | |
13277 | kind, dwo_name, hex_string (signature), | |
13278 | host_address_to_string (dwo_cutu)); | |
13279 | } | |
13280 | return dwo_cutu; | |
80626a55 DE |
13281 | } |
13282 | } | |
2e276125 | 13283 | } |
9cdd5dbd | 13284 | |
80626a55 DE |
13285 | /* We didn't find it. This could mean a dwo_id mismatch, or |
13286 | someone deleted the DWO/DWP file, or the search path isn't set up | |
13287 | correctly to find the file. */ | |
13288 | ||
b4f54984 | 13289 | if (dwarf_read_debug) |
80626a55 DE |
13290 | { |
13291 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) not found\n", | |
13292 | kind, dwo_name, hex_string (signature)); | |
13293 | } | |
3019eac3 | 13294 | |
6656a72d DE |
13295 | /* This is a warning and not a complaint because it can be caused by |
13296 | pilot error (e.g., user accidentally deleting the DWO). */ | |
43942612 DE |
13297 | { |
13298 | /* Print the name of the DWP file if we looked there, helps the user | |
13299 | better diagnose the problem. */ | |
791afaa2 | 13300 | std::string dwp_text; |
43942612 DE |
13301 | |
13302 | if (dwp_file != NULL) | |
791afaa2 TT |
13303 | dwp_text = string_printf (" [in DWP file %s]", |
13304 | lbasename (dwp_file->name)); | |
43942612 | 13305 | |
9d8780f0 | 13306 | warning (_("Could not find DWO %s %s(%s)%s referenced by %s at offset %s" |
43942612 DE |
13307 | " [in module %s]"), |
13308 | kind, dwo_name, hex_string (signature), | |
791afaa2 | 13309 | dwp_text.c_str (), |
43942612 | 13310 | this_unit->is_debug_types ? "TU" : "CU", |
9d8780f0 | 13311 | sect_offset_str (this_unit->sect_off), objfile_name (objfile)); |
43942612 | 13312 | } |
3019eac3 | 13313 | return NULL; |
5fb290d7 DJ |
13314 | } |
13315 | ||
80626a55 DE |
13316 | /* Lookup the DWO CU DWO_NAME/SIGNATURE referenced from THIS_CU. |
13317 | See lookup_dwo_cutu_unit for details. */ | |
13318 | ||
13319 | static struct dwo_unit * | |
13320 | lookup_dwo_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
13321 | const char *dwo_name, const char *comp_dir, | |
13322 | ULONGEST signature) | |
13323 | { | |
13324 | return lookup_dwo_cutu (this_cu, dwo_name, comp_dir, signature, 0); | |
13325 | } | |
13326 | ||
13327 | /* Lookup the DWO TU DWO_NAME/SIGNATURE referenced from THIS_TU. | |
13328 | See lookup_dwo_cutu_unit for details. */ | |
13329 | ||
13330 | static struct dwo_unit * | |
13331 | lookup_dwo_type_unit (struct signatured_type *this_tu, | |
13332 | const char *dwo_name, const char *comp_dir) | |
13333 | { | |
13334 | return lookup_dwo_cutu (&this_tu->per_cu, dwo_name, comp_dir, this_tu->signature, 1); | |
13335 | } | |
13336 | ||
89e63ee4 DE |
13337 | /* Traversal function for queue_and_load_all_dwo_tus. */ |
13338 | ||
13339 | static int | |
13340 | queue_and_load_dwo_tu (void **slot, void *info) | |
13341 | { | |
13342 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
13343 | struct dwarf2_per_cu_data *per_cu = (struct dwarf2_per_cu_data *) info; | |
13344 | ULONGEST signature = dwo_unit->signature; | |
13345 | struct signatured_type *sig_type = | |
13346 | lookup_dwo_signatured_type (per_cu->cu, signature); | |
13347 | ||
13348 | if (sig_type != NULL) | |
13349 | { | |
13350 | struct dwarf2_per_cu_data *sig_cu = &sig_type->per_cu; | |
13351 | ||
13352 | /* We pass NULL for DEPENDENT_CU because we don't yet know if there's | |
13353 | a real dependency of PER_CU on SIG_TYPE. That is detected later | |
13354 | while processing PER_CU. */ | |
13355 | if (maybe_queue_comp_unit (NULL, sig_cu, per_cu->cu->language)) | |
13356 | load_full_type_unit (sig_cu); | |
13357 | VEC_safe_push (dwarf2_per_cu_ptr, per_cu->imported_symtabs, sig_cu); | |
13358 | } | |
13359 | ||
13360 | return 1; | |
13361 | } | |
13362 | ||
13363 | /* Queue all TUs contained in the DWO of PER_CU to be read in. | |
13364 | The DWO may have the only definition of the type, though it may not be | |
13365 | referenced anywhere in PER_CU. Thus we have to load *all* its TUs. | |
13366 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
13367 | ||
13368 | static void | |
13369 | queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *per_cu) | |
13370 | { | |
13371 | struct dwo_unit *dwo_unit; | |
13372 | struct dwo_file *dwo_file; | |
13373 | ||
13374 | gdb_assert (!per_cu->is_debug_types); | |
ed2dc618 | 13375 | gdb_assert (get_dwp_file (per_cu->dwarf2_per_objfile) == NULL); |
89e63ee4 DE |
13376 | gdb_assert (per_cu->cu != NULL); |
13377 | ||
13378 | dwo_unit = per_cu->cu->dwo_unit; | |
13379 | gdb_assert (dwo_unit != NULL); | |
13380 | ||
13381 | dwo_file = dwo_unit->dwo_file; | |
13382 | if (dwo_file->tus != NULL) | |
13383 | htab_traverse_noresize (dwo_file->tus, queue_and_load_dwo_tu, per_cu); | |
13384 | } | |
13385 | ||
3019eac3 | 13386 | /* Free all resources associated with DWO_FILE. |
5dafb3d1 | 13387 | Close the DWO file and munmap the sections. */ |
348e048f DE |
13388 | |
13389 | static void | |
5dafb3d1 | 13390 | free_dwo_file (struct dwo_file *dwo_file) |
348e048f | 13391 | { |
5c6fa7ab | 13392 | /* Note: dbfd is NULL for virtual DWO files. */ |
80626a55 | 13393 | gdb_bfd_unref (dwo_file->dbfd); |
348e048f | 13394 | |
3019eac3 DE |
13395 | VEC_free (dwarf2_section_info_def, dwo_file->sections.types); |
13396 | } | |
348e048f | 13397 | |
3019eac3 | 13398 | /* Traversal function for free_dwo_files. */ |
2ab95328 | 13399 | |
3019eac3 DE |
13400 | static int |
13401 | free_dwo_file_from_slot (void **slot, void *info) | |
13402 | { | |
13403 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
348e048f | 13404 | |
5dafb3d1 | 13405 | free_dwo_file (dwo_file); |
348e048f | 13406 | |
3019eac3 DE |
13407 | return 1; |
13408 | } | |
348e048f | 13409 | |
3019eac3 | 13410 | /* Free all resources associated with DWO_FILES. */ |
348e048f | 13411 | |
3019eac3 DE |
13412 | static void |
13413 | free_dwo_files (htab_t dwo_files, struct objfile *objfile) | |
13414 | { | |
13415 | htab_traverse_noresize (dwo_files, free_dwo_file_from_slot, objfile); | |
348e048f | 13416 | } |
3019eac3 DE |
13417 | \f |
13418 | /* Read in various DIEs. */ | |
348e048f | 13419 | |
d389af10 | 13420 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). |
3e43a32a MS |
13421 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
13422 | already referenced by DW_AT_abstract_origin from the children of the | |
13423 | current DIE. */ | |
d389af10 JK |
13424 | |
13425 | static void | |
13426 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
13427 | { | |
13428 | struct die_info *child_die; | |
791afaa2 | 13429 | sect_offset *offsetp; |
d389af10 JK |
13430 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
13431 | struct die_info *origin_die; | |
13432 | /* Iterator of the ORIGIN_DIE children. */ | |
13433 | struct die_info *origin_child_die; | |
d389af10 | 13434 | struct attribute *attr; |
cd02d79d PA |
13435 | struct dwarf2_cu *origin_cu; |
13436 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
13437 | |
13438 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13439 | if (!attr) | |
13440 | return; | |
13441 | ||
cd02d79d PA |
13442 | /* Note that following die references may follow to a die in a |
13443 | different cu. */ | |
13444 | ||
13445 | origin_cu = cu; | |
13446 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
13447 | ||
13448 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
13449 | symbols in. */ | |
13450 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
13451 | origin_cu->list_in_scope = cu->list_in_scope; | |
13452 | ||
edb3359d DJ |
13453 | if (die->tag != origin_die->tag |
13454 | && !(die->tag == DW_TAG_inlined_subroutine | |
13455 | && origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 13456 | complaint (_("DIE %s and its abstract origin %s have different tags"), |
9d8780f0 SM |
13457 | sect_offset_str (die->sect_off), |
13458 | sect_offset_str (origin_die->sect_off)); | |
d389af10 | 13459 | |
791afaa2 | 13460 | std::vector<sect_offset> offsets; |
d389af10 | 13461 | |
3ea89b92 PMR |
13462 | for (child_die = die->child; |
13463 | child_die && child_die->tag; | |
13464 | child_die = sibling_die (child_die)) | |
13465 | { | |
13466 | struct die_info *child_origin_die; | |
13467 | struct dwarf2_cu *child_origin_cu; | |
13468 | ||
13469 | /* We are trying to process concrete instance entries: | |
216f72a1 | 13470 | DW_TAG_call_site DIEs indeed have a DW_AT_abstract_origin tag, but |
3ea89b92 PMR |
13471 | it's not relevant to our analysis here. i.e. detecting DIEs that are |
13472 | present in the abstract instance but not referenced in the concrete | |
13473 | one. */ | |
216f72a1 JK |
13474 | if (child_die->tag == DW_TAG_call_site |
13475 | || child_die->tag == DW_TAG_GNU_call_site) | |
3ea89b92 PMR |
13476 | continue; |
13477 | ||
c38f313d DJ |
13478 | /* For each CHILD_DIE, find the corresponding child of |
13479 | ORIGIN_DIE. If there is more than one layer of | |
13480 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
13481 | but GCC versions at least through 4.4 generate this (GCC PR | |
13482 | 40573). */ | |
3ea89b92 PMR |
13483 | child_origin_die = child_die; |
13484 | child_origin_cu = cu; | |
c38f313d DJ |
13485 | while (1) |
13486 | { | |
cd02d79d PA |
13487 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
13488 | child_origin_cu); | |
c38f313d DJ |
13489 | if (attr == NULL) |
13490 | break; | |
cd02d79d PA |
13491 | child_origin_die = follow_die_ref (child_origin_die, attr, |
13492 | &child_origin_cu); | |
c38f313d DJ |
13493 | } |
13494 | ||
d389af10 JK |
13495 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
13496 | counterpart may exist. */ | |
c38f313d | 13497 | if (child_origin_die != child_die) |
d389af10 | 13498 | { |
edb3359d DJ |
13499 | if (child_die->tag != child_origin_die->tag |
13500 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
13501 | && child_origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 13502 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 13503 | "different tags"), |
9d8780f0 SM |
13504 | sect_offset_str (child_die->sect_off), |
13505 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 13506 | if (child_origin_die->parent != origin_die) |
b98664d3 | 13507 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 13508 | "different parents"), |
9d8780f0 SM |
13509 | sect_offset_str (child_die->sect_off), |
13510 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 13511 | else |
791afaa2 | 13512 | offsets.push_back (child_origin_die->sect_off); |
d389af10 | 13513 | } |
d389af10 | 13514 | } |
791afaa2 TT |
13515 | std::sort (offsets.begin (), offsets.end ()); |
13516 | sect_offset *offsets_end = offsets.data () + offsets.size (); | |
13517 | for (offsetp = offsets.data () + 1; offsetp < offsets_end; offsetp++) | |
9c541725 | 13518 | if (offsetp[-1] == *offsetp) |
b98664d3 | 13519 | complaint (_("Multiple children of DIE %s refer " |
9d8780f0 SM |
13520 | "to DIE %s as their abstract origin"), |
13521 | sect_offset_str (die->sect_off), sect_offset_str (*offsetp)); | |
d389af10 | 13522 | |
791afaa2 | 13523 | offsetp = offsets.data (); |
d389af10 JK |
13524 | origin_child_die = origin_die->child; |
13525 | while (origin_child_die && origin_child_die->tag) | |
13526 | { | |
13527 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 | 13528 | while (offsetp < offsets_end |
9c541725 | 13529 | && *offsetp < origin_child_die->sect_off) |
d389af10 | 13530 | offsetp++; |
b64f50a1 | 13531 | if (offsetp >= offsets_end |
9c541725 | 13532 | || *offsetp > origin_child_die->sect_off) |
d389af10 | 13533 | { |
adde2bff DE |
13534 | /* Found that ORIGIN_CHILD_DIE is really not referenced. |
13535 | Check whether we're already processing ORIGIN_CHILD_DIE. | |
13536 | This can happen with mutually referenced abstract_origins. | |
13537 | PR 16581. */ | |
13538 | if (!origin_child_die->in_process) | |
13539 | process_die (origin_child_die, origin_cu); | |
d389af10 JK |
13540 | } |
13541 | origin_child_die = sibling_die (origin_child_die); | |
13542 | } | |
cd02d79d | 13543 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
d389af10 JK |
13544 | } |
13545 | ||
c906108c | 13546 | static void |
e7c27a73 | 13547 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13548 | { |
518817b3 | 13549 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 13550 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
fe978cb0 | 13551 | struct context_stack *newobj; |
c906108c SS |
13552 | CORE_ADDR lowpc; |
13553 | CORE_ADDR highpc; | |
13554 | struct die_info *child_die; | |
edb3359d | 13555 | struct attribute *attr, *call_line, *call_file; |
15d034d0 | 13556 | const char *name; |
e142c38c | 13557 | CORE_ADDR baseaddr; |
801e3a5b | 13558 | struct block *block; |
edb3359d | 13559 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
2f4732b0 | 13560 | std::vector<struct symbol *> template_args; |
34eaf542 | 13561 | struct template_symbol *templ_func = NULL; |
edb3359d DJ |
13562 | |
13563 | if (inlined_func) | |
13564 | { | |
13565 | /* If we do not have call site information, we can't show the | |
13566 | caller of this inlined function. That's too confusing, so | |
13567 | only use the scope for local variables. */ | |
13568 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
13569 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
13570 | if (call_line == NULL || call_file == NULL) | |
13571 | { | |
13572 | read_lexical_block_scope (die, cu); | |
13573 | return; | |
13574 | } | |
13575 | } | |
c906108c | 13576 | |
e142c38c DJ |
13577 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
13578 | ||
94af9270 | 13579 | name = dwarf2_name (die, cu); |
c906108c | 13580 | |
e8d05480 JB |
13581 | /* Ignore functions with missing or empty names. These are actually |
13582 | illegal according to the DWARF standard. */ | |
13583 | if (name == NULL) | |
13584 | { | |
b98664d3 | 13585 | complaint (_("missing name for subprogram DIE at %s"), |
9d8780f0 | 13586 | sect_offset_str (die->sect_off)); |
e8d05480 JB |
13587 | return; |
13588 | } | |
13589 | ||
13590 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
3a2b436a | 13591 | if (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL) |
e385593e | 13592 | <= PC_BOUNDS_INVALID) |
e8d05480 | 13593 | { |
ae4d0c03 PM |
13594 | attr = dwarf2_attr (die, DW_AT_external, cu); |
13595 | if (!attr || !DW_UNSND (attr)) | |
b98664d3 | 13596 | complaint (_("cannot get low and high bounds " |
9d8780f0 SM |
13597 | "for subprogram DIE at %s"), |
13598 | sect_offset_str (die->sect_off)); | |
e8d05480 JB |
13599 | return; |
13600 | } | |
c906108c | 13601 | |
3e29f34a MR |
13602 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13603 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13604 | |
34eaf542 TT |
13605 | /* If we have any template arguments, then we must allocate a |
13606 | different sort of symbol. */ | |
13607 | for (child_die = die->child; child_die; child_die = sibling_die (child_die)) | |
13608 | { | |
13609 | if (child_die->tag == DW_TAG_template_type_param | |
13610 | || child_die->tag == DW_TAG_template_value_param) | |
13611 | { | |
e623cf5d | 13612 | templ_func = allocate_template_symbol (objfile); |
cf724bc9 | 13613 | templ_func->subclass = SYMBOL_TEMPLATE; |
34eaf542 TT |
13614 | break; |
13615 | } | |
13616 | } | |
13617 | ||
fe978cb0 | 13618 | newobj = push_context (0, lowpc); |
5e2db402 TT |
13619 | newobj->name = new_symbol (die, read_type_die (die, cu), cu, |
13620 | (struct symbol *) templ_func); | |
4c2df51b | 13621 | |
4cecd739 DJ |
13622 | /* If there is a location expression for DW_AT_frame_base, record |
13623 | it. */ | |
e142c38c | 13624 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 13625 | if (attr) |
fe978cb0 | 13626 | dwarf2_symbol_mark_computed (attr, newobj->name, cu, 1); |
4c2df51b | 13627 | |
63e43d3a PMR |
13628 | /* If there is a location for the static link, record it. */ |
13629 | newobj->static_link = NULL; | |
13630 | attr = dwarf2_attr (die, DW_AT_static_link, cu); | |
13631 | if (attr) | |
13632 | { | |
224c3ddb SM |
13633 | newobj->static_link |
13634 | = XOBNEW (&objfile->objfile_obstack, struct dynamic_prop); | |
63e43d3a PMR |
13635 | attr_to_dynamic_prop (attr, die, cu, newobj->static_link); |
13636 | } | |
13637 | ||
e142c38c | 13638 | cu->list_in_scope = &local_symbols; |
c906108c | 13639 | |
639d11d3 | 13640 | if (die->child != NULL) |
c906108c | 13641 | { |
639d11d3 | 13642 | child_die = die->child; |
c906108c SS |
13643 | while (child_die && child_die->tag) |
13644 | { | |
34eaf542 TT |
13645 | if (child_die->tag == DW_TAG_template_type_param |
13646 | || child_die->tag == DW_TAG_template_value_param) | |
13647 | { | |
13648 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
13649 | ||
f1078f66 | 13650 | if (arg != NULL) |
2f4732b0 | 13651 | template_args.push_back (arg); |
34eaf542 TT |
13652 | } |
13653 | else | |
13654 | process_die (child_die, cu); | |
c906108c SS |
13655 | child_die = sibling_die (child_die); |
13656 | } | |
13657 | } | |
13658 | ||
d389af10 JK |
13659 | inherit_abstract_dies (die, cu); |
13660 | ||
4a811a97 UW |
13661 | /* If we have a DW_AT_specification, we might need to import using |
13662 | directives from the context of the specification DIE. See the | |
13663 | comment in determine_prefix. */ | |
13664 | if (cu->language == language_cplus | |
13665 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
13666 | { | |
13667 | struct dwarf2_cu *spec_cu = cu; | |
13668 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
13669 | ||
13670 | while (spec_die) | |
13671 | { | |
13672 | child_die = spec_die->child; | |
13673 | while (child_die && child_die->tag) | |
13674 | { | |
13675 | if (child_die->tag == DW_TAG_imported_module) | |
13676 | process_die (child_die, spec_cu); | |
13677 | child_die = sibling_die (child_die); | |
13678 | } | |
13679 | ||
13680 | /* In some cases, GCC generates specification DIEs that | |
13681 | themselves contain DW_AT_specification attributes. */ | |
13682 | spec_die = die_specification (spec_die, &spec_cu); | |
13683 | } | |
13684 | } | |
13685 | ||
fe978cb0 | 13686 | newobj = pop_context (); |
c906108c | 13687 | /* Make a block for the local symbols within. */ |
fe978cb0 | 13688 | block = finish_block (newobj->name, &local_symbols, newobj->old_blocks, |
63e43d3a | 13689 | newobj->static_link, lowpc, highpc); |
801e3a5b | 13690 | |
df8a16a1 | 13691 | /* For C++, set the block's scope. */ |
45280282 IB |
13692 | if ((cu->language == language_cplus |
13693 | || cu->language == language_fortran | |
c44af4eb TT |
13694 | || cu->language == language_d |
13695 | || cu->language == language_rust) | |
4d4ec4e5 | 13696 | && cu->processing_has_namespace_info) |
195a3f6c TT |
13697 | block_set_scope (block, determine_prefix (die, cu), |
13698 | &objfile->objfile_obstack); | |
df8a16a1 | 13699 | |
801e3a5b JB |
13700 | /* If we have address ranges, record them. */ |
13701 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 13702 | |
fe978cb0 | 13703 | gdbarch_make_symbol_special (gdbarch, newobj->name, objfile); |
3e29f34a | 13704 | |
34eaf542 | 13705 | /* Attach template arguments to function. */ |
2f4732b0 | 13706 | if (!template_args.empty ()) |
34eaf542 TT |
13707 | { |
13708 | gdb_assert (templ_func != NULL); | |
13709 | ||
2f4732b0 | 13710 | templ_func->n_template_arguments = template_args.size (); |
34eaf542 | 13711 | templ_func->template_arguments |
8d749320 SM |
13712 | = XOBNEWVEC (&objfile->objfile_obstack, struct symbol *, |
13713 | templ_func->n_template_arguments); | |
34eaf542 | 13714 | memcpy (templ_func->template_arguments, |
2f4732b0 | 13715 | template_args.data (), |
34eaf542 | 13716 | (templ_func->n_template_arguments * sizeof (struct symbol *))); |
34eaf542 TT |
13717 | } |
13718 | ||
208d8187 JB |
13719 | /* In C++, we can have functions nested inside functions (e.g., when |
13720 | a function declares a class that has methods). This means that | |
13721 | when we finish processing a function scope, we may need to go | |
13722 | back to building a containing block's symbol lists. */ | |
fe978cb0 | 13723 | local_symbols = newobj->locals; |
6cccc9a8 | 13724 | set_local_using_directives (newobj->local_using_directives); |
208d8187 | 13725 | |
921e78cf JB |
13726 | /* If we've finished processing a top-level function, subsequent |
13727 | symbols go in the file symbol list. */ | |
13728 | if (outermost_context_p ()) | |
e142c38c | 13729 | cu->list_in_scope = &file_symbols; |
c906108c SS |
13730 | } |
13731 | ||
13732 | /* Process all the DIES contained within a lexical block scope. Start | |
13733 | a new scope, process the dies, and then close the scope. */ | |
13734 | ||
13735 | static void | |
e7c27a73 | 13736 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13737 | { |
518817b3 | 13738 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 13739 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
fe978cb0 | 13740 | struct context_stack *newobj; |
c906108c SS |
13741 | CORE_ADDR lowpc, highpc; |
13742 | struct die_info *child_die; | |
e142c38c DJ |
13743 | CORE_ADDR baseaddr; |
13744 | ||
13745 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
13746 | |
13747 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
13748 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
13749 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 13750 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 13751 | describe ranges. */ |
e385593e JK |
13752 | switch (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
13753 | { | |
13754 | case PC_BOUNDS_NOT_PRESENT: | |
13755 | /* DW_TAG_lexical_block has no attributes, process its children as if | |
13756 | there was no wrapping by that DW_TAG_lexical_block. | |
13757 | GCC does no longer produces such DWARF since GCC r224161. */ | |
13758 | for (child_die = die->child; | |
13759 | child_die != NULL && child_die->tag; | |
13760 | child_die = sibling_die (child_die)) | |
13761 | process_die (child_die, cu); | |
13762 | return; | |
13763 | case PC_BOUNDS_INVALID: | |
13764 | return; | |
13765 | } | |
3e29f34a MR |
13766 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13767 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c SS |
13768 | |
13769 | push_context (0, lowpc); | |
639d11d3 | 13770 | if (die->child != NULL) |
c906108c | 13771 | { |
639d11d3 | 13772 | child_die = die->child; |
c906108c SS |
13773 | while (child_die && child_die->tag) |
13774 | { | |
e7c27a73 | 13775 | process_die (child_die, cu); |
c906108c SS |
13776 | child_die = sibling_die (child_die); |
13777 | } | |
13778 | } | |
3ea89b92 | 13779 | inherit_abstract_dies (die, cu); |
fe978cb0 | 13780 | newobj = pop_context (); |
c906108c | 13781 | |
6cccc9a8 | 13782 | if (local_symbols != NULL || (*get_local_using_directives ()) != NULL) |
c906108c | 13783 | { |
801e3a5b | 13784 | struct block *block |
63e43d3a | 13785 | = finish_block (0, &local_symbols, newobj->old_blocks, NULL, |
fe978cb0 | 13786 | newobj->start_addr, highpc); |
801e3a5b JB |
13787 | |
13788 | /* Note that recording ranges after traversing children, as we | |
13789 | do here, means that recording a parent's ranges entails | |
13790 | walking across all its children's ranges as they appear in | |
13791 | the address map, which is quadratic behavior. | |
13792 | ||
13793 | It would be nicer to record the parent's ranges before | |
13794 | traversing its children, simply overriding whatever you find | |
13795 | there. But since we don't even decide whether to create a | |
13796 | block until after we've traversed its children, that's hard | |
13797 | to do. */ | |
13798 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c | 13799 | } |
fe978cb0 | 13800 | local_symbols = newobj->locals; |
6cccc9a8 | 13801 | set_local_using_directives (newobj->local_using_directives); |
c906108c SS |
13802 | } |
13803 | ||
216f72a1 | 13804 | /* Read in DW_TAG_call_site and insert it to CU->call_site_htab. */ |
96408a79 SA |
13805 | |
13806 | static void | |
13807 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
13808 | { | |
518817b3 | 13809 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
96408a79 SA |
13810 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
13811 | CORE_ADDR pc, baseaddr; | |
13812 | struct attribute *attr; | |
13813 | struct call_site *call_site, call_site_local; | |
13814 | void **slot; | |
13815 | int nparams; | |
13816 | struct die_info *child_die; | |
13817 | ||
13818 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
13819 | ||
216f72a1 JK |
13820 | attr = dwarf2_attr (die, DW_AT_call_return_pc, cu); |
13821 | if (attr == NULL) | |
13822 | { | |
13823 | /* This was a pre-DWARF-5 GNU extension alias | |
13824 | for DW_AT_call_return_pc. */ | |
13825 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
13826 | } | |
96408a79 SA |
13827 | if (!attr) |
13828 | { | |
b98664d3 | 13829 | complaint (_("missing DW_AT_call_return_pc for DW_TAG_call_site " |
9d8780f0 SM |
13830 | "DIE %s [in module %s]"), |
13831 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13832 | return; |
13833 | } | |
31aa7e4e | 13834 | pc = attr_value_as_address (attr) + baseaddr; |
3e29f34a | 13835 | pc = gdbarch_adjust_dwarf2_addr (gdbarch, pc); |
96408a79 SA |
13836 | |
13837 | if (cu->call_site_htab == NULL) | |
13838 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
13839 | NULL, &objfile->objfile_obstack, | |
13840 | hashtab_obstack_allocate, NULL); | |
13841 | call_site_local.pc = pc; | |
13842 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
13843 | if (*slot != NULL) | |
13844 | { | |
b98664d3 | 13845 | complaint (_("Duplicate PC %s for DW_TAG_call_site " |
9d8780f0 SM |
13846 | "DIE %s [in module %s]"), |
13847 | paddress (gdbarch, pc), sect_offset_str (die->sect_off), | |
4262abfb | 13848 | objfile_name (objfile)); |
96408a79 SA |
13849 | return; |
13850 | } | |
13851 | ||
13852 | /* Count parameters at the caller. */ | |
13853 | ||
13854 | nparams = 0; | |
13855 | for (child_die = die->child; child_die && child_die->tag; | |
13856 | child_die = sibling_die (child_die)) | |
13857 | { | |
216f72a1 JK |
13858 | if (child_die->tag != DW_TAG_call_site_parameter |
13859 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 | 13860 | { |
b98664d3 | 13861 | complaint (_("Tag %d is not DW_TAG_call_site_parameter in " |
9d8780f0 SM |
13862 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13863 | child_die->tag, sect_offset_str (child_die->sect_off), | |
4262abfb | 13864 | objfile_name (objfile)); |
96408a79 SA |
13865 | continue; |
13866 | } | |
13867 | ||
13868 | nparams++; | |
13869 | } | |
13870 | ||
224c3ddb SM |
13871 | call_site |
13872 | = ((struct call_site *) | |
13873 | obstack_alloc (&objfile->objfile_obstack, | |
13874 | sizeof (*call_site) | |
13875 | + (sizeof (*call_site->parameter) * (nparams - 1)))); | |
96408a79 SA |
13876 | *slot = call_site; |
13877 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
13878 | call_site->pc = pc; | |
13879 | ||
216f72a1 JK |
13880 | if (dwarf2_flag_true_p (die, DW_AT_call_tail_call, cu) |
13881 | || dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
96408a79 SA |
13882 | { |
13883 | struct die_info *func_die; | |
13884 | ||
13885 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
13886 | for (func_die = die->parent; | |
13887 | func_die && func_die->tag != DW_TAG_subprogram | |
13888 | && func_die->tag != DW_TAG_subroutine_type; | |
13889 | func_die = func_die->parent); | |
13890 | ||
216f72a1 JK |
13891 | /* DW_AT_call_all_calls is a superset |
13892 | of DW_AT_call_all_tail_calls. */ | |
96408a79 | 13893 | if (func_die |
216f72a1 | 13894 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_calls, cu) |
96408a79 | 13895 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) |
216f72a1 | 13896 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_tail_calls, cu) |
96408a79 SA |
13897 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) |
13898 | { | |
13899 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
13900 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
13901 | both the initial caller containing the real return address PC and | |
13902 | the final callee containing the current PC of a chain of tail | |
13903 | calls do not need to have the tail call list complete. But any | |
13904 | function candidate for a virtual tail call frame searched via | |
13905 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
13906 | determined unambiguously. */ | |
13907 | } | |
13908 | else | |
13909 | { | |
13910 | struct type *func_type = NULL; | |
13911 | ||
13912 | if (func_die) | |
13913 | func_type = get_die_type (func_die, cu); | |
13914 | if (func_type != NULL) | |
13915 | { | |
13916 | gdb_assert (TYPE_CODE (func_type) == TYPE_CODE_FUNC); | |
13917 | ||
13918 | /* Enlist this call site to the function. */ | |
13919 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
13920 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
13921 | } | |
13922 | else | |
b98664d3 | 13923 | complaint (_("Cannot find function owning DW_TAG_call_site " |
9d8780f0 SM |
13924 | "DIE %s [in module %s]"), |
13925 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13926 | } |
13927 | } | |
13928 | ||
216f72a1 JK |
13929 | attr = dwarf2_attr (die, DW_AT_call_target, cu); |
13930 | if (attr == NULL) | |
13931 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
13932 | if (attr == NULL) | |
13933 | attr = dwarf2_attr (die, DW_AT_call_origin, cu); | |
96408a79 | 13934 | if (attr == NULL) |
216f72a1 JK |
13935 | { |
13936 | /* This was a pre-DWARF-5 GNU extension alias for DW_AT_call_origin. */ | |
13937 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13938 | } | |
96408a79 SA |
13939 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); |
13940 | if (!attr || (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0)) | |
13941 | /* Keep NULL DWARF_BLOCK. */; | |
13942 | else if (attr_form_is_block (attr)) | |
13943 | { | |
13944 | struct dwarf2_locexpr_baton *dlbaton; | |
13945 | ||
8d749320 | 13946 | dlbaton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
96408a79 SA |
13947 | dlbaton->data = DW_BLOCK (attr)->data; |
13948 | dlbaton->size = DW_BLOCK (attr)->size; | |
13949 | dlbaton->per_cu = cu->per_cu; | |
13950 | ||
13951 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
13952 | } | |
7771576e | 13953 | else if (attr_form_is_ref (attr)) |
96408a79 | 13954 | { |
96408a79 SA |
13955 | struct dwarf2_cu *target_cu = cu; |
13956 | struct die_info *target_die; | |
13957 | ||
ac9ec31b | 13958 | target_die = follow_die_ref (die, attr, &target_cu); |
518817b3 | 13959 | gdb_assert (target_cu->per_cu->dwarf2_per_objfile->objfile == objfile); |
96408a79 SA |
13960 | if (die_is_declaration (target_die, target_cu)) |
13961 | { | |
7d45c7c3 | 13962 | const char *target_physname; |
9112db09 JK |
13963 | |
13964 | /* Prefer the mangled name; otherwise compute the demangled one. */ | |
73b9be8b | 13965 | target_physname = dw2_linkage_name (target_die, target_cu); |
7d45c7c3 | 13966 | if (target_physname == NULL) |
9112db09 | 13967 | target_physname = dwarf2_physname (NULL, target_die, target_cu); |
96408a79 | 13968 | if (target_physname == NULL) |
b98664d3 | 13969 | complaint (_("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
13970 | "physname, for referencing DIE %s [in module %s]"), |
13971 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 13972 | else |
7d455152 | 13973 | SET_FIELD_PHYSNAME (call_site->target, target_physname); |
96408a79 SA |
13974 | } |
13975 | else | |
13976 | { | |
13977 | CORE_ADDR lowpc; | |
13978 | ||
13979 | /* DW_AT_entry_pc should be preferred. */ | |
3a2b436a | 13980 | if (dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL) |
e385593e | 13981 | <= PC_BOUNDS_INVALID) |
b98664d3 | 13982 | complaint (_("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
13983 | "low pc, for referencing DIE %s [in module %s]"), |
13984 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 13985 | else |
3e29f34a MR |
13986 | { |
13987 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); | |
13988 | SET_FIELD_PHYSADDR (call_site->target, lowpc); | |
13989 | } | |
96408a79 SA |
13990 | } |
13991 | } | |
13992 | else | |
b98664d3 | 13993 | complaint (_("DW_TAG_call_site DW_AT_call_target is neither " |
9d8780f0 SM |
13994 | "block nor reference, for DIE %s [in module %s]"), |
13995 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13996 | |
13997 | call_site->per_cu = cu->per_cu; | |
13998 | ||
13999 | for (child_die = die->child; | |
14000 | child_die && child_die->tag; | |
14001 | child_die = sibling_die (child_die)) | |
14002 | { | |
96408a79 | 14003 | struct call_site_parameter *parameter; |
1788b2d3 | 14004 | struct attribute *loc, *origin; |
96408a79 | 14005 | |
216f72a1 JK |
14006 | if (child_die->tag != DW_TAG_call_site_parameter |
14007 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 SA |
14008 | { |
14009 | /* Already printed the complaint above. */ | |
14010 | continue; | |
14011 | } | |
14012 | ||
14013 | gdb_assert (call_site->parameter_count < nparams); | |
14014 | parameter = &call_site->parameter[call_site->parameter_count]; | |
14015 | ||
1788b2d3 JK |
14016 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
14017 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
216f72a1 | 14018 | register is contained in DW_AT_call_value. */ |
96408a79 | 14019 | |
24c5c679 | 14020 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
216f72a1 JK |
14021 | origin = dwarf2_attr (child_die, DW_AT_call_parameter, cu); |
14022 | if (origin == NULL) | |
14023 | { | |
14024 | /* This was a pre-DWARF-5 GNU extension alias | |
14025 | for DW_AT_call_parameter. */ | |
14026 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); | |
14027 | } | |
7771576e | 14028 | if (loc == NULL && origin != NULL && attr_form_is_ref (origin)) |
1788b2d3 | 14029 | { |
1788b2d3 | 14030 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; |
9c541725 PA |
14031 | |
14032 | sect_offset sect_off | |
14033 | = (sect_offset) dwarf2_get_ref_die_offset (origin); | |
14034 | if (!offset_in_cu_p (&cu->header, sect_off)) | |
d76b7dbc JK |
14035 | { |
14036 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
14037 | binding can be done only inside one CU. Such referenced DIE | |
14038 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
b98664d3 | 14039 | complaint (_("DW_AT_call_parameter offset is not in CU for " |
9d8780f0 SM |
14040 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14041 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14042 | objfile_name (objfile)); |
d76b7dbc JK |
14043 | continue; |
14044 | } | |
9c541725 PA |
14045 | parameter->u.param_cu_off |
14046 | = (cu_offset) (sect_off - cu->header.sect_off); | |
1788b2d3 JK |
14047 | } |
14048 | else if (loc == NULL || origin != NULL || !attr_form_is_block (loc)) | |
96408a79 | 14049 | { |
b98664d3 | 14050 | complaint (_("No DW_FORM_block* DW_AT_location for " |
9d8780f0 SM |
14051 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14052 | sect_offset_str (child_die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
14053 | continue; |
14054 | } | |
24c5c679 | 14055 | else |
96408a79 | 14056 | { |
24c5c679 JK |
14057 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
14058 | (DW_BLOCK (loc)->data, &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size]); | |
14059 | if (parameter->u.dwarf_reg != -1) | |
14060 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
14061 | else if (dwarf_block_to_sp_offset (gdbarch, DW_BLOCK (loc)->data, | |
14062 | &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size], | |
14063 | ¶meter->u.fb_offset)) | |
14064 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
14065 | else | |
14066 | { | |
b98664d3 | 14067 | complaint (_("Only single DW_OP_reg or DW_OP_fbreg is supported " |
24c5c679 | 14068 | "for DW_FORM_block* DW_AT_location is supported for " |
9d8780f0 | 14069 | "DW_TAG_call_site child DIE %s " |
24c5c679 | 14070 | "[in module %s]"), |
9d8780f0 | 14071 | sect_offset_str (child_die->sect_off), |
9c541725 | 14072 | objfile_name (objfile)); |
24c5c679 JK |
14073 | continue; |
14074 | } | |
96408a79 SA |
14075 | } |
14076 | ||
216f72a1 JK |
14077 | attr = dwarf2_attr (child_die, DW_AT_call_value, cu); |
14078 | if (attr == NULL) | |
14079 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
96408a79 SA |
14080 | if (!attr_form_is_block (attr)) |
14081 | { | |
b98664d3 | 14082 | complaint (_("No DW_FORM_block* DW_AT_call_value for " |
9d8780f0 SM |
14083 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14084 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14085 | objfile_name (objfile)); |
96408a79 SA |
14086 | continue; |
14087 | } | |
14088 | parameter->value = DW_BLOCK (attr)->data; | |
14089 | parameter->value_size = DW_BLOCK (attr)->size; | |
14090 | ||
14091 | /* Parameters are not pre-cleared by memset above. */ | |
14092 | parameter->data_value = NULL; | |
14093 | parameter->data_value_size = 0; | |
14094 | call_site->parameter_count++; | |
14095 | ||
216f72a1 JK |
14096 | attr = dwarf2_attr (child_die, DW_AT_call_data_value, cu); |
14097 | if (attr == NULL) | |
14098 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
96408a79 SA |
14099 | if (attr) |
14100 | { | |
14101 | if (!attr_form_is_block (attr)) | |
b98664d3 | 14102 | complaint (_("No DW_FORM_block* DW_AT_call_data_value for " |
9d8780f0 SM |
14103 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14104 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14105 | objfile_name (objfile)); |
96408a79 SA |
14106 | else |
14107 | { | |
14108 | parameter->data_value = DW_BLOCK (attr)->data; | |
14109 | parameter->data_value_size = DW_BLOCK (attr)->size; | |
14110 | } | |
14111 | } | |
14112 | } | |
14113 | } | |
14114 | ||
71a3c369 TT |
14115 | /* Helper function for read_variable. If DIE represents a virtual |
14116 | table, then return the type of the concrete object that is | |
14117 | associated with the virtual table. Otherwise, return NULL. */ | |
14118 | ||
14119 | static struct type * | |
14120 | rust_containing_type (struct die_info *die, struct dwarf2_cu *cu) | |
14121 | { | |
14122 | struct attribute *attr = dwarf2_attr (die, DW_AT_type, cu); | |
14123 | if (attr == NULL) | |
14124 | return NULL; | |
14125 | ||
14126 | /* Find the type DIE. */ | |
14127 | struct die_info *type_die = NULL; | |
14128 | struct dwarf2_cu *type_cu = cu; | |
14129 | ||
14130 | if (attr_form_is_ref (attr)) | |
14131 | type_die = follow_die_ref (die, attr, &type_cu); | |
14132 | if (type_die == NULL) | |
14133 | return NULL; | |
14134 | ||
14135 | if (dwarf2_attr (type_die, DW_AT_containing_type, type_cu) == NULL) | |
14136 | return NULL; | |
14137 | return die_containing_type (type_die, type_cu); | |
14138 | } | |
14139 | ||
14140 | /* Read a variable (DW_TAG_variable) DIE and create a new symbol. */ | |
14141 | ||
14142 | static void | |
14143 | read_variable (struct die_info *die, struct dwarf2_cu *cu) | |
14144 | { | |
14145 | struct rust_vtable_symbol *storage = NULL; | |
14146 | ||
14147 | if (cu->language == language_rust) | |
14148 | { | |
14149 | struct type *containing_type = rust_containing_type (die, cu); | |
14150 | ||
14151 | if (containing_type != NULL) | |
14152 | { | |
518817b3 | 14153 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
71a3c369 TT |
14154 | |
14155 | storage = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
14156 | struct rust_vtable_symbol); | |
14157 | initialize_objfile_symbol (storage); | |
14158 | storage->concrete_type = containing_type; | |
cf724bc9 | 14159 | storage->subclass = SYMBOL_RUST_VTABLE; |
71a3c369 TT |
14160 | } |
14161 | } | |
14162 | ||
5e2db402 | 14163 | new_symbol (die, NULL, cu, storage); |
71a3c369 TT |
14164 | } |
14165 | ||
43988095 JK |
14166 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET |
14167 | reading .debug_rnglists. | |
14168 | Callback's type should be: | |
14169 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
14170 | Return true if the attributes are present and valid, otherwise, | |
14171 | return false. */ | |
14172 | ||
14173 | template <typename Callback> | |
14174 | static bool | |
14175 | dwarf2_rnglists_process (unsigned offset, struct dwarf2_cu *cu, | |
14176 | Callback &&callback) | |
14177 | { | |
ed2dc618 | 14178 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 14179 | = cu->per_cu->dwarf2_per_objfile; |
ed2dc618 | 14180 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
43988095 | 14181 | bfd *obfd = objfile->obfd; |
43988095 JK |
14182 | /* Base address selection entry. */ |
14183 | CORE_ADDR base; | |
14184 | int found_base; | |
43988095 | 14185 | const gdb_byte *buffer; |
43988095 JK |
14186 | CORE_ADDR baseaddr; |
14187 | bool overflow = false; | |
14188 | ||
14189 | found_base = cu->base_known; | |
14190 | base = cu->base_address; | |
14191 | ||
14192 | dwarf2_read_section (objfile, &dwarf2_per_objfile->rnglists); | |
14193 | if (offset >= dwarf2_per_objfile->rnglists.size) | |
14194 | { | |
b98664d3 | 14195 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43988095 JK |
14196 | offset); |
14197 | return false; | |
14198 | } | |
14199 | buffer = dwarf2_per_objfile->rnglists.buffer + offset; | |
14200 | ||
14201 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
14202 | ||
14203 | while (1) | |
14204 | { | |
7814882a JK |
14205 | /* Initialize it due to a false compiler warning. */ |
14206 | CORE_ADDR range_beginning = 0, range_end = 0; | |
43988095 JK |
14207 | const gdb_byte *buf_end = (dwarf2_per_objfile->rnglists.buffer |
14208 | + dwarf2_per_objfile->rnglists.size); | |
14209 | unsigned int bytes_read; | |
14210 | ||
14211 | if (buffer == buf_end) | |
14212 | { | |
14213 | overflow = true; | |
14214 | break; | |
14215 | } | |
14216 | const auto rlet = static_cast<enum dwarf_range_list_entry>(*buffer++); | |
14217 | switch (rlet) | |
14218 | { | |
14219 | case DW_RLE_end_of_list: | |
14220 | break; | |
14221 | case DW_RLE_base_address: | |
14222 | if (buffer + cu->header.addr_size > buf_end) | |
14223 | { | |
14224 | overflow = true; | |
14225 | break; | |
14226 | } | |
14227 | base = read_address (obfd, buffer, cu, &bytes_read); | |
14228 | found_base = 1; | |
14229 | buffer += bytes_read; | |
14230 | break; | |
14231 | case DW_RLE_start_length: | |
14232 | if (buffer + cu->header.addr_size > buf_end) | |
14233 | { | |
14234 | overflow = true; | |
14235 | break; | |
14236 | } | |
14237 | range_beginning = read_address (obfd, buffer, cu, &bytes_read); | |
14238 | buffer += bytes_read; | |
14239 | range_end = (range_beginning | |
14240 | + read_unsigned_leb128 (obfd, buffer, &bytes_read)); | |
14241 | buffer += bytes_read; | |
14242 | if (buffer > buf_end) | |
14243 | { | |
14244 | overflow = true; | |
14245 | break; | |
14246 | } | |
14247 | break; | |
14248 | case DW_RLE_offset_pair: | |
14249 | range_beginning = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14250 | buffer += bytes_read; | |
14251 | if (buffer > buf_end) | |
14252 | { | |
14253 | overflow = true; | |
14254 | break; | |
14255 | } | |
14256 | range_end = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14257 | buffer += bytes_read; | |
14258 | if (buffer > buf_end) | |
14259 | { | |
14260 | overflow = true; | |
14261 | break; | |
14262 | } | |
14263 | break; | |
14264 | case DW_RLE_start_end: | |
14265 | if (buffer + 2 * cu->header.addr_size > buf_end) | |
14266 | { | |
14267 | overflow = true; | |
14268 | break; | |
14269 | } | |
14270 | range_beginning = read_address (obfd, buffer, cu, &bytes_read); | |
14271 | buffer += bytes_read; | |
14272 | range_end = read_address (obfd, buffer, cu, &bytes_read); | |
14273 | buffer += bytes_read; | |
14274 | break; | |
14275 | default: | |
b98664d3 | 14276 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
14277 | return false; |
14278 | } | |
14279 | if (rlet == DW_RLE_end_of_list || overflow) | |
14280 | break; | |
14281 | if (rlet == DW_RLE_base_address) | |
14282 | continue; | |
14283 | ||
14284 | if (!found_base) | |
14285 | { | |
14286 | /* We have no valid base address for the ranges | |
14287 | data. */ | |
b98664d3 | 14288 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
14289 | return false; |
14290 | } | |
14291 | ||
14292 | if (range_beginning > range_end) | |
14293 | { | |
14294 | /* Inverted range entries are invalid. */ | |
b98664d3 | 14295 | complaint (_("Invalid .debug_rnglists data (inverted range)")); |
43988095 JK |
14296 | return false; |
14297 | } | |
14298 | ||
14299 | /* Empty range entries have no effect. */ | |
14300 | if (range_beginning == range_end) | |
14301 | continue; | |
14302 | ||
14303 | range_beginning += base; | |
14304 | range_end += base; | |
14305 | ||
14306 | /* A not-uncommon case of bad debug info. | |
14307 | Don't pollute the addrmap with bad data. */ | |
14308 | if (range_beginning + baseaddr == 0 | |
14309 | && !dwarf2_per_objfile->has_section_at_zero) | |
14310 | { | |
b98664d3 | 14311 | complaint (_(".debug_rnglists entry has start address of zero" |
43988095 JK |
14312 | " [in module %s]"), objfile_name (objfile)); |
14313 | continue; | |
14314 | } | |
14315 | ||
14316 | callback (range_beginning, range_end); | |
14317 | } | |
14318 | ||
14319 | if (overflow) | |
14320 | { | |
b98664d3 | 14321 | complaint (_("Offset %d is not terminated " |
43988095 JK |
14322 | "for DW_AT_ranges attribute"), |
14323 | offset); | |
14324 | return false; | |
14325 | } | |
14326 | ||
14327 | return true; | |
14328 | } | |
14329 | ||
14330 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET reading .debug_ranges. | |
14331 | Callback's type should be: | |
14332 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
5f46c5a5 | 14333 | Return 1 if the attributes are present and valid, otherwise, return 0. */ |
43039443 | 14334 | |
43988095 | 14335 | template <typename Callback> |
43039443 | 14336 | static int |
5f46c5a5 | 14337 | dwarf2_ranges_process (unsigned offset, struct dwarf2_cu *cu, |
43988095 | 14338 | Callback &&callback) |
43039443 | 14339 | { |
ed2dc618 | 14340 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 14341 | = cu->per_cu->dwarf2_per_objfile; |
ed2dc618 | 14342 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
43039443 JK |
14343 | struct comp_unit_head *cu_header = &cu->header; |
14344 | bfd *obfd = objfile->obfd; | |
14345 | unsigned int addr_size = cu_header->addr_size; | |
14346 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
14347 | /* Base address selection entry. */ | |
14348 | CORE_ADDR base; | |
14349 | int found_base; | |
14350 | unsigned int dummy; | |
d521ce57 | 14351 | const gdb_byte *buffer; |
ff013f42 | 14352 | CORE_ADDR baseaddr; |
43039443 | 14353 | |
43988095 JK |
14354 | if (cu_header->version >= 5) |
14355 | return dwarf2_rnglists_process (offset, cu, callback); | |
14356 | ||
d00adf39 DE |
14357 | found_base = cu->base_known; |
14358 | base = cu->base_address; | |
43039443 | 14359 | |
be391dca | 14360 | dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges); |
dce234bc | 14361 | if (offset >= dwarf2_per_objfile->ranges.size) |
43039443 | 14362 | { |
b98664d3 | 14363 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43039443 JK |
14364 | offset); |
14365 | return 0; | |
14366 | } | |
dce234bc | 14367 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
43039443 | 14368 | |
e7030f15 | 14369 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
ff013f42 | 14370 | |
43039443 JK |
14371 | while (1) |
14372 | { | |
14373 | CORE_ADDR range_beginning, range_end; | |
14374 | ||
14375 | range_beginning = read_address (obfd, buffer, cu, &dummy); | |
14376 | buffer += addr_size; | |
14377 | range_end = read_address (obfd, buffer, cu, &dummy); | |
14378 | buffer += addr_size; | |
14379 | offset += 2 * addr_size; | |
14380 | ||
14381 | /* An end of list marker is a pair of zero addresses. */ | |
14382 | if (range_beginning == 0 && range_end == 0) | |
14383 | /* Found the end of list entry. */ | |
14384 | break; | |
14385 | ||
14386 | /* Each base address selection entry is a pair of 2 values. | |
14387 | The first is the largest possible address, the second is | |
14388 | the base address. Check for a base address here. */ | |
14389 | if ((range_beginning & mask) == mask) | |
14390 | { | |
28d2bfb9 AB |
14391 | /* If we found the largest possible address, then we already |
14392 | have the base address in range_end. */ | |
14393 | base = range_end; | |
43039443 JK |
14394 | found_base = 1; |
14395 | continue; | |
14396 | } | |
14397 | ||
14398 | if (!found_base) | |
14399 | { | |
14400 | /* We have no valid base address for the ranges | |
14401 | data. */ | |
b98664d3 | 14402 | complaint (_("Invalid .debug_ranges data (no base address)")); |
43039443 JK |
14403 | return 0; |
14404 | } | |
14405 | ||
9277c30c UW |
14406 | if (range_beginning > range_end) |
14407 | { | |
14408 | /* Inverted range entries are invalid. */ | |
b98664d3 | 14409 | complaint (_("Invalid .debug_ranges data (inverted range)")); |
9277c30c UW |
14410 | return 0; |
14411 | } | |
14412 | ||
14413 | /* Empty range entries have no effect. */ | |
14414 | if (range_beginning == range_end) | |
14415 | continue; | |
14416 | ||
43039443 JK |
14417 | range_beginning += base; |
14418 | range_end += base; | |
14419 | ||
01093045 DE |
14420 | /* A not-uncommon case of bad debug info. |
14421 | Don't pollute the addrmap with bad data. */ | |
14422 | if (range_beginning + baseaddr == 0 | |
14423 | && !dwarf2_per_objfile->has_section_at_zero) | |
14424 | { | |
b98664d3 | 14425 | complaint (_(".debug_ranges entry has start address of zero" |
4262abfb | 14426 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
14427 | continue; |
14428 | } | |
14429 | ||
5f46c5a5 JK |
14430 | callback (range_beginning, range_end); |
14431 | } | |
14432 | ||
14433 | return 1; | |
14434 | } | |
14435 | ||
14436 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. | |
14437 | Return 1 if the attributes are present and valid, otherwise, return 0. | |
14438 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
14439 | ||
14440 | static int | |
14441 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
14442 | CORE_ADDR *high_return, struct dwarf2_cu *cu, | |
14443 | struct partial_symtab *ranges_pst) | |
14444 | { | |
518817b3 | 14445 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
5f46c5a5 JK |
14446 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
14447 | const CORE_ADDR baseaddr = ANOFFSET (objfile->section_offsets, | |
14448 | SECT_OFF_TEXT (objfile)); | |
14449 | int low_set = 0; | |
14450 | CORE_ADDR low = 0; | |
14451 | CORE_ADDR high = 0; | |
14452 | int retval; | |
14453 | ||
14454 | retval = dwarf2_ranges_process (offset, cu, | |
14455 | [&] (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
14456 | { | |
9277c30c | 14457 | if (ranges_pst != NULL) |
3e29f34a MR |
14458 | { |
14459 | CORE_ADDR lowpc; | |
14460 | CORE_ADDR highpc; | |
14461 | ||
14462 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, | |
14463 | range_beginning + baseaddr); | |
14464 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, | |
14465 | range_end + baseaddr); | |
14466 | addrmap_set_empty (objfile->psymtabs_addrmap, lowpc, highpc - 1, | |
14467 | ranges_pst); | |
14468 | } | |
ff013f42 | 14469 | |
43039443 JK |
14470 | /* FIXME: This is recording everything as a low-high |
14471 | segment of consecutive addresses. We should have a | |
14472 | data structure for discontiguous block ranges | |
14473 | instead. */ | |
14474 | if (! low_set) | |
14475 | { | |
14476 | low = range_beginning; | |
14477 | high = range_end; | |
14478 | low_set = 1; | |
14479 | } | |
14480 | else | |
14481 | { | |
14482 | if (range_beginning < low) | |
14483 | low = range_beginning; | |
14484 | if (range_end > high) | |
14485 | high = range_end; | |
14486 | } | |
5f46c5a5 JK |
14487 | }); |
14488 | if (!retval) | |
14489 | return 0; | |
43039443 JK |
14490 | |
14491 | if (! low_set) | |
14492 | /* If the first entry is an end-of-list marker, the range | |
14493 | describes an empty scope, i.e. no instructions. */ | |
14494 | return 0; | |
14495 | ||
14496 | if (low_return) | |
14497 | *low_return = low; | |
14498 | if (high_return) | |
14499 | *high_return = high; | |
14500 | return 1; | |
14501 | } | |
14502 | ||
3a2b436a JK |
14503 | /* Get low and high pc attributes from a die. See enum pc_bounds_kind |
14504 | definition for the return value. *LOWPC and *HIGHPC are set iff | |
e385593e | 14505 | neither PC_BOUNDS_NOT_PRESENT nor PC_BOUNDS_INVALID are returned. */ |
380bca97 | 14506 | |
3a2b436a | 14507 | static enum pc_bounds_kind |
af34e669 | 14508 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 DJ |
14509 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
14510 | struct partial_symtab *pst) | |
c906108c | 14511 | { |
518817b3 SM |
14512 | struct dwarf2_per_objfile *dwarf2_per_objfile |
14513 | = cu->per_cu->dwarf2_per_objfile; | |
c906108c | 14514 | struct attribute *attr; |
91da1414 | 14515 | struct attribute *attr_high; |
af34e669 DJ |
14516 | CORE_ADDR low = 0; |
14517 | CORE_ADDR high = 0; | |
e385593e | 14518 | enum pc_bounds_kind ret; |
c906108c | 14519 | |
91da1414 MW |
14520 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14521 | if (attr_high) | |
af34e669 | 14522 | { |
e142c38c | 14523 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 | 14524 | if (attr) |
91da1414 | 14525 | { |
31aa7e4e JB |
14526 | low = attr_value_as_address (attr); |
14527 | high = attr_value_as_address (attr_high); | |
14528 | if (cu->header.version >= 4 && attr_form_is_constant (attr_high)) | |
14529 | high += low; | |
91da1414 | 14530 | } |
af34e669 DJ |
14531 | else |
14532 | /* Found high w/o low attribute. */ | |
e385593e | 14533 | return PC_BOUNDS_INVALID; |
af34e669 DJ |
14534 | |
14535 | /* Found consecutive range of addresses. */ | |
3a2b436a | 14536 | ret = PC_BOUNDS_HIGH_LOW; |
af34e669 | 14537 | } |
c906108c | 14538 | else |
af34e669 | 14539 | { |
e142c38c | 14540 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
14541 | if (attr != NULL) |
14542 | { | |
ab435259 DE |
14543 | /* DW_AT_ranges_base does not apply to DIEs from the DWO skeleton. |
14544 | We take advantage of the fact that DW_AT_ranges does not appear | |
14545 | in DW_TAG_compile_unit of DWO files. */ | |
14546 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
14547 | unsigned int ranges_offset = (DW_UNSND (attr) | |
14548 | + (need_ranges_base | |
14549 | ? cu->ranges_base | |
14550 | : 0)); | |
2e3cf129 | 14551 | |
af34e669 | 14552 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 14553 | .debug_ranges section. */ |
2e3cf129 | 14554 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst)) |
e385593e | 14555 | return PC_BOUNDS_INVALID; |
43039443 | 14556 | /* Found discontinuous range of addresses. */ |
3a2b436a | 14557 | ret = PC_BOUNDS_RANGES; |
af34e669 | 14558 | } |
e385593e JK |
14559 | else |
14560 | return PC_BOUNDS_NOT_PRESENT; | |
af34e669 | 14561 | } |
c906108c | 14562 | |
48fbe735 | 14563 | /* partial_die_info::read has also the strict LOW < HIGH requirement. */ |
9373cf26 | 14564 | if (high <= low) |
e385593e | 14565 | return PC_BOUNDS_INVALID; |
c906108c SS |
14566 | |
14567 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
14568 | eliminate duplicate copies of functions and vtables and such. | |
14569 | The linker will arbitrarily choose one and discard the others. | |
14570 | The AT_*_pc values for such functions refer to local labels in | |
14571 | these sections. If the section from that file was discarded, the | |
14572 | labels are not in the output, so the relocs get a value of 0. | |
14573 | If this is a discarded function, mark the pc bounds as invalid, | |
14574 | so that GDB will ignore it. */ | |
72dca2f5 | 14575 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
e385593e | 14576 | return PC_BOUNDS_INVALID; |
c906108c SS |
14577 | |
14578 | *lowpc = low; | |
96408a79 SA |
14579 | if (highpc) |
14580 | *highpc = high; | |
af34e669 | 14581 | return ret; |
c906108c SS |
14582 | } |
14583 | ||
b084d499 JB |
14584 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
14585 | its low and high PC addresses. Do nothing if these addresses could not | |
14586 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
14587 | and HIGHPC to the high address if greater than HIGHPC. */ | |
14588 | ||
14589 | static void | |
14590 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
14591 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
14592 | struct dwarf2_cu *cu) | |
14593 | { | |
14594 | CORE_ADDR low, high; | |
14595 | struct die_info *child = die->child; | |
14596 | ||
e385593e | 14597 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL) >= PC_BOUNDS_RANGES) |
b084d499 | 14598 | { |
325fac50 PA |
14599 | *lowpc = std::min (*lowpc, low); |
14600 | *highpc = std::max (*highpc, high); | |
b084d499 JB |
14601 | } |
14602 | ||
14603 | /* If the language does not allow nested subprograms (either inside | |
14604 | subprograms or lexical blocks), we're done. */ | |
14605 | if (cu->language != language_ada) | |
14606 | return; | |
6e70227d | 14607 | |
b084d499 JB |
14608 | /* Check all the children of the given DIE. If it contains nested |
14609 | subprograms, then check their pc bounds. Likewise, we need to | |
14610 | check lexical blocks as well, as they may also contain subprogram | |
14611 | definitions. */ | |
14612 | while (child && child->tag) | |
14613 | { | |
14614 | if (child->tag == DW_TAG_subprogram | |
14615 | || child->tag == DW_TAG_lexical_block) | |
14616 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
14617 | child = sibling_die (child); | |
14618 | } | |
14619 | } | |
14620 | ||
fae299cd DC |
14621 | /* Get the low and high pc's represented by the scope DIE, and store |
14622 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
14623 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
14624 | ||
14625 | static void | |
14626 | get_scope_pc_bounds (struct die_info *die, | |
14627 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
14628 | struct dwarf2_cu *cu) | |
14629 | { | |
14630 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
14631 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
14632 | CORE_ADDR current_low, current_high; | |
14633 | ||
3a2b436a | 14634 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL) |
e385593e | 14635 | >= PC_BOUNDS_RANGES) |
fae299cd DC |
14636 | { |
14637 | best_low = current_low; | |
14638 | best_high = current_high; | |
14639 | } | |
14640 | else | |
14641 | { | |
14642 | struct die_info *child = die->child; | |
14643 | ||
14644 | while (child && child->tag) | |
14645 | { | |
14646 | switch (child->tag) { | |
14647 | case DW_TAG_subprogram: | |
b084d499 | 14648 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
14649 | break; |
14650 | case DW_TAG_namespace: | |
f55ee35c | 14651 | case DW_TAG_module: |
fae299cd DC |
14652 | /* FIXME: carlton/2004-01-16: Should we do this for |
14653 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
14654 | that current GCC's always emit the DIEs corresponding | |
14655 | to definitions of methods of classes as children of a | |
14656 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
14657 | the DIEs giving the declarations, which could be | |
14658 | anywhere). But I don't see any reason why the | |
14659 | standards says that they have to be there. */ | |
14660 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
14661 | ||
14662 | if (current_low != ((CORE_ADDR) -1)) | |
14663 | { | |
325fac50 PA |
14664 | best_low = std::min (best_low, current_low); |
14665 | best_high = std::max (best_high, current_high); | |
fae299cd DC |
14666 | } |
14667 | break; | |
14668 | default: | |
0963b4bd | 14669 | /* Ignore. */ |
fae299cd DC |
14670 | break; |
14671 | } | |
14672 | ||
14673 | child = sibling_die (child); | |
14674 | } | |
14675 | } | |
14676 | ||
14677 | *lowpc = best_low; | |
14678 | *highpc = best_high; | |
14679 | } | |
14680 | ||
801e3a5b JB |
14681 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
14682 | in DIE. */ | |
380bca97 | 14683 | |
801e3a5b JB |
14684 | static void |
14685 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
14686 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
14687 | { | |
518817b3 | 14688 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 14689 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
801e3a5b | 14690 | struct attribute *attr; |
91da1414 | 14691 | struct attribute *attr_high; |
801e3a5b | 14692 | |
91da1414 MW |
14693 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14694 | if (attr_high) | |
801e3a5b | 14695 | { |
801e3a5b JB |
14696 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
14697 | if (attr) | |
14698 | { | |
31aa7e4e JB |
14699 | CORE_ADDR low = attr_value_as_address (attr); |
14700 | CORE_ADDR high = attr_value_as_address (attr_high); | |
14701 | ||
14702 | if (cu->header.version >= 4 && attr_form_is_constant (attr_high)) | |
14703 | high += low; | |
9a619af0 | 14704 | |
3e29f34a MR |
14705 | low = gdbarch_adjust_dwarf2_addr (gdbarch, low + baseaddr); |
14706 | high = gdbarch_adjust_dwarf2_addr (gdbarch, high + baseaddr); | |
14707 | record_block_range (block, low, high - 1); | |
801e3a5b JB |
14708 | } |
14709 | } | |
14710 | ||
14711 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
14712 | if (attr) | |
14713 | { | |
ab435259 DE |
14714 | /* DW_AT_ranges_base does not apply to DIEs from the DWO skeleton. |
14715 | We take advantage of the fact that DW_AT_ranges does not appear | |
14716 | in DW_TAG_compile_unit of DWO files. */ | |
14717 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
801e3a5b JB |
14718 | |
14719 | /* The value of the DW_AT_ranges attribute is the offset of the | |
14720 | address range list in the .debug_ranges section. */ | |
ab435259 DE |
14721 | unsigned long offset = (DW_UNSND (attr) |
14722 | + (need_ranges_base ? cu->ranges_base : 0)); | |
801e3a5b | 14723 | |
5f46c5a5 JK |
14724 | dwarf2_ranges_process (offset, cu, |
14725 | [&] (CORE_ADDR start, CORE_ADDR end) | |
14726 | { | |
58fdfd2c JK |
14727 | start += baseaddr; |
14728 | end += baseaddr; | |
5f46c5a5 JK |
14729 | start = gdbarch_adjust_dwarf2_addr (gdbarch, start); |
14730 | end = gdbarch_adjust_dwarf2_addr (gdbarch, end); | |
14731 | record_block_range (block, start, end - 1); | |
14732 | }); | |
801e3a5b JB |
14733 | } |
14734 | } | |
14735 | ||
685b1105 JK |
14736 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
14737 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 14738 | |
685b1105 JK |
14739 | static void |
14740 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 | 14741 | { |
38360086 | 14742 | int major, minor; |
60d5a603 JK |
14743 | |
14744 | if (cu->producer == NULL) | |
14745 | { | |
14746 | /* For unknown compilers expect their behavior is DWARF version | |
14747 | compliant. | |
14748 | ||
14749 | GCC started to support .debug_types sections by -gdwarf-4 since | |
14750 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
14751 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
14752 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
14753 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 14754 | } |
b1ffba5a | 14755 | else if (producer_is_gcc (cu->producer, &major, &minor)) |
60d5a603 | 14756 | { |
38360086 MW |
14757 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); |
14758 | cu->producer_is_gcc_lt_4_3 = major < 4 || (major == 4 && minor < 3); | |
685b1105 | 14759 | } |
5230b05a WT |
14760 | else if (producer_is_icc (cu->producer, &major, &minor)) |
14761 | cu->producer_is_icc_lt_14 = major < 14; | |
685b1105 JK |
14762 | else |
14763 | { | |
14764 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
14765 | compliant. */ | |
60d5a603 JK |
14766 | } |
14767 | ||
ba919b58 | 14768 | cu->checked_producer = 1; |
685b1105 | 14769 | } |
ba919b58 | 14770 | |
685b1105 JK |
14771 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
14772 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
14773 | during 4.6.0 experimental. */ | |
14774 | ||
14775 | static int | |
14776 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) | |
14777 | { | |
14778 | if (!cu->checked_producer) | |
14779 | check_producer (cu); | |
14780 | ||
14781 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
14782 | } |
14783 | ||
14784 | /* Return the default accessibility type if it is not overriden by | |
14785 | DW_AT_accessibility. */ | |
14786 | ||
14787 | static enum dwarf_access_attribute | |
14788 | dwarf2_default_access_attribute (struct die_info *die, struct dwarf2_cu *cu) | |
14789 | { | |
14790 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) | |
14791 | { | |
14792 | /* The default DWARF 2 accessibility for members is public, the default | |
14793 | accessibility for inheritance is private. */ | |
14794 | ||
14795 | if (die->tag != DW_TAG_inheritance) | |
14796 | return DW_ACCESS_public; | |
14797 | else | |
14798 | return DW_ACCESS_private; | |
14799 | } | |
14800 | else | |
14801 | { | |
14802 | /* DWARF 3+ defines the default accessibility a different way. The same | |
14803 | rules apply now for DW_TAG_inheritance as for the members and it only | |
14804 | depends on the container kind. */ | |
14805 | ||
14806 | if (die->parent->tag == DW_TAG_class_type) | |
14807 | return DW_ACCESS_private; | |
14808 | else | |
14809 | return DW_ACCESS_public; | |
14810 | } | |
14811 | } | |
14812 | ||
74ac6d43 TT |
14813 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
14814 | offset. If the attribute was not found return 0, otherwise return | |
14815 | 1. If it was found but could not properly be handled, set *OFFSET | |
14816 | to 0. */ | |
14817 | ||
14818 | static int | |
14819 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
14820 | LONGEST *offset) | |
14821 | { | |
14822 | struct attribute *attr; | |
14823 | ||
14824 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
14825 | if (attr != NULL) | |
14826 | { | |
14827 | *offset = 0; | |
14828 | ||
14829 | /* Note that we do not check for a section offset first here. | |
14830 | This is because DW_AT_data_member_location is new in DWARF 4, | |
14831 | so if we see it, we can assume that a constant form is really | |
14832 | a constant and not a section offset. */ | |
14833 | if (attr_form_is_constant (attr)) | |
14834 | *offset = dwarf2_get_attr_constant_value (attr, 0); | |
14835 | else if (attr_form_is_section_offset (attr)) | |
14836 | dwarf2_complex_location_expr_complaint (); | |
14837 | else if (attr_form_is_block (attr)) | |
14838 | *offset = decode_locdesc (DW_BLOCK (attr), cu); | |
14839 | else | |
14840 | dwarf2_complex_location_expr_complaint (); | |
14841 | ||
14842 | return 1; | |
14843 | } | |
14844 | ||
14845 | return 0; | |
14846 | } | |
14847 | ||
c906108c SS |
14848 | /* Add an aggregate field to the field list. */ |
14849 | ||
14850 | static void | |
107d2387 | 14851 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 14852 | struct dwarf2_cu *cu) |
6e70227d | 14853 | { |
518817b3 | 14854 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
5e2b427d | 14855 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
14856 | struct nextfield *new_field; |
14857 | struct attribute *attr; | |
14858 | struct field *fp; | |
15d034d0 | 14859 | const char *fieldname = ""; |
c906108c | 14860 | |
7d0ccb61 DJ |
14861 | if (die->tag == DW_TAG_inheritance) |
14862 | { | |
be2daae6 TT |
14863 | fip->baseclasses.emplace_back (); |
14864 | new_field = &fip->baseclasses.back (); | |
7d0ccb61 DJ |
14865 | } |
14866 | else | |
14867 | { | |
be2daae6 TT |
14868 | fip->fields.emplace_back (); |
14869 | new_field = &fip->fields.back (); | |
7d0ccb61 | 14870 | } |
be2daae6 | 14871 | |
c906108c SS |
14872 | fip->nfields++; |
14873 | ||
e142c38c | 14874 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
14875 | if (attr) |
14876 | new_field->accessibility = DW_UNSND (attr); | |
60d5a603 JK |
14877 | else |
14878 | new_field->accessibility = dwarf2_default_access_attribute (die, cu); | |
c906108c SS |
14879 | if (new_field->accessibility != DW_ACCESS_public) |
14880 | fip->non_public_fields = 1; | |
60d5a603 | 14881 | |
e142c38c | 14882 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
14883 | if (attr) |
14884 | new_field->virtuality = DW_UNSND (attr); | |
60d5a603 JK |
14885 | else |
14886 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
14887 | |
14888 | fp = &new_field->field; | |
a9a9bd0f | 14889 | |
e142c38c | 14890 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 14891 | { |
74ac6d43 TT |
14892 | LONGEST offset; |
14893 | ||
a9a9bd0f | 14894 | /* Data member other than a C++ static data member. */ |
6e70227d | 14895 | |
c906108c | 14896 | /* Get type of field. */ |
e7c27a73 | 14897 | fp->type = die_type (die, cu); |
c906108c | 14898 | |
d6a843b5 | 14899 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 14900 | |
c906108c | 14901 | /* Get bit size of field (zero if none). */ |
e142c38c | 14902 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
14903 | if (attr) |
14904 | { | |
14905 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
14906 | } | |
14907 | else | |
14908 | { | |
14909 | FIELD_BITSIZE (*fp) = 0; | |
14910 | } | |
14911 | ||
14912 | /* Get bit offset of field. */ | |
74ac6d43 TT |
14913 | if (handle_data_member_location (die, cu, &offset)) |
14914 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
e142c38c | 14915 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
14916 | if (attr) |
14917 | { | |
5e2b427d | 14918 | if (gdbarch_bits_big_endian (gdbarch)) |
c906108c SS |
14919 | { |
14920 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
14921 | additional bit offset from the MSB of the containing |
14922 | anonymous object to the MSB of the field. We don't | |
14923 | have to do anything special since we don't need to | |
14924 | know the size of the anonymous object. */ | |
f41f5e61 | 14925 | SET_FIELD_BITPOS (*fp, FIELD_BITPOS (*fp) + DW_UNSND (attr)); |
c906108c SS |
14926 | } |
14927 | else | |
14928 | { | |
14929 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
14930 | MSB of the anonymous object, subtract off the number of |
14931 | bits from the MSB of the field to the MSB of the | |
14932 | object, and then subtract off the number of bits of | |
14933 | the field itself. The result is the bit offset of | |
14934 | the LSB of the field. */ | |
c906108c SS |
14935 | int anonymous_size; |
14936 | int bit_offset = DW_UNSND (attr); | |
14937 | ||
e142c38c | 14938 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
14939 | if (attr) |
14940 | { | |
14941 | /* The size of the anonymous object containing | |
14942 | the bit field is explicit, so use the | |
14943 | indicated size (in bytes). */ | |
14944 | anonymous_size = DW_UNSND (attr); | |
14945 | } | |
14946 | else | |
14947 | { | |
14948 | /* The size of the anonymous object containing | |
14949 | the bit field must be inferred from the type | |
14950 | attribute of the data member containing the | |
14951 | bit field. */ | |
14952 | anonymous_size = TYPE_LENGTH (fp->type); | |
14953 | } | |
f41f5e61 PA |
14954 | SET_FIELD_BITPOS (*fp, |
14955 | (FIELD_BITPOS (*fp) | |
14956 | + anonymous_size * bits_per_byte | |
14957 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
14958 | } |
14959 | } | |
da5b30da AA |
14960 | attr = dwarf2_attr (die, DW_AT_data_bit_offset, cu); |
14961 | if (attr != NULL) | |
14962 | SET_FIELD_BITPOS (*fp, (FIELD_BITPOS (*fp) | |
14963 | + dwarf2_get_attr_constant_value (attr, 0))); | |
c906108c SS |
14964 | |
14965 | /* Get name of field. */ | |
39cbfefa DJ |
14966 | fieldname = dwarf2_name (die, cu); |
14967 | if (fieldname == NULL) | |
14968 | fieldname = ""; | |
d8151005 DJ |
14969 | |
14970 | /* The name is already allocated along with this objfile, so we don't | |
14971 | need to duplicate it for the type. */ | |
14972 | fp->name = fieldname; | |
c906108c SS |
14973 | |
14974 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 14975 | pointer or virtual base class pointer) to private. */ |
e142c38c | 14976 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 14977 | { |
d48cc9dd | 14978 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
14979 | new_field->accessibility = DW_ACCESS_private; |
14980 | fip->non_public_fields = 1; | |
14981 | } | |
14982 | } | |
a9a9bd0f | 14983 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 14984 | { |
a9a9bd0f DC |
14985 | /* C++ static member. */ |
14986 | ||
14987 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
14988 | is a declaration, but all versions of G++ as of this writing | |
14989 | (so through at least 3.2.1) incorrectly generate | |
14990 | DW_TAG_variable tags. */ | |
6e70227d | 14991 | |
ff355380 | 14992 | const char *physname; |
c906108c | 14993 | |
a9a9bd0f | 14994 | /* Get name of field. */ |
39cbfefa DJ |
14995 | fieldname = dwarf2_name (die, cu); |
14996 | if (fieldname == NULL) | |
c906108c SS |
14997 | return; |
14998 | ||
254e6b9e | 14999 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
15000 | if (attr |
15001 | /* Only create a symbol if this is an external value. | |
15002 | new_symbol checks this and puts the value in the global symbol | |
15003 | table, which we want. If it is not external, new_symbol | |
15004 | will try to put the value in cu->list_in_scope which is wrong. */ | |
15005 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
15006 | { |
15007 | /* A static const member, not much different than an enum as far as | |
15008 | we're concerned, except that we can support more types. */ | |
15009 | new_symbol (die, NULL, cu); | |
15010 | } | |
15011 | ||
2df3850c | 15012 | /* Get physical name. */ |
ff355380 | 15013 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 15014 | |
d8151005 DJ |
15015 | /* The name is already allocated along with this objfile, so we don't |
15016 | need to duplicate it for the type. */ | |
15017 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 15018 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 15019 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
15020 | } |
15021 | else if (die->tag == DW_TAG_inheritance) | |
15022 | { | |
74ac6d43 | 15023 | LONGEST offset; |
d4b96c9a | 15024 | |
74ac6d43 TT |
15025 | /* C++ base class field. */ |
15026 | if (handle_data_member_location (die, cu, &offset)) | |
15027 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
c906108c | 15028 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 15029 | FIELD_TYPE (*fp) = die_type (die, cu); |
a737d952 | 15030 | FIELD_NAME (*fp) = TYPE_NAME (fp->type); |
c906108c | 15031 | } |
2ddeaf8a TT |
15032 | else if (die->tag == DW_TAG_variant_part) |
15033 | { | |
15034 | /* process_structure_scope will treat this DIE as a union. */ | |
15035 | process_structure_scope (die, cu); | |
15036 | ||
15037 | /* The variant part is relative to the start of the enclosing | |
15038 | structure. */ | |
15039 | SET_FIELD_BITPOS (*fp, 0); | |
15040 | fp->type = get_die_type (die, cu); | |
15041 | fp->artificial = 1; | |
15042 | fp->name = "<<variant>>"; | |
15043 | } | |
15044 | else | |
15045 | gdb_assert_not_reached ("missing case in dwarf2_add_field"); | |
c906108c SS |
15046 | } |
15047 | ||
883fd55a KS |
15048 | /* Can the type given by DIE define another type? */ |
15049 | ||
15050 | static bool | |
15051 | type_can_define_types (const struct die_info *die) | |
15052 | { | |
15053 | switch (die->tag) | |
15054 | { | |
15055 | case DW_TAG_typedef: | |
15056 | case DW_TAG_class_type: | |
15057 | case DW_TAG_structure_type: | |
15058 | case DW_TAG_union_type: | |
15059 | case DW_TAG_enumeration_type: | |
15060 | return true; | |
15061 | ||
15062 | default: | |
15063 | return false; | |
15064 | } | |
15065 | } | |
15066 | ||
15067 | /* Add a type definition defined in the scope of the FIP's class. */ | |
98751a41 JK |
15068 | |
15069 | static void | |
883fd55a KS |
15070 | dwarf2_add_type_defn (struct field_info *fip, struct die_info *die, |
15071 | struct dwarf2_cu *cu) | |
6e70227d | 15072 | { |
be2daae6 TT |
15073 | struct decl_field fp; |
15074 | memset (&fp, 0, sizeof (fp)); | |
98751a41 | 15075 | |
883fd55a | 15076 | gdb_assert (type_can_define_types (die)); |
98751a41 | 15077 | |
883fd55a | 15078 | /* Get name of field. NULL is okay here, meaning an anonymous type. */ |
be2daae6 TT |
15079 | fp.name = dwarf2_name (die, cu); |
15080 | fp.type = read_type_die (die, cu); | |
98751a41 | 15081 | |
c191a687 KS |
15082 | /* Save accessibility. */ |
15083 | enum dwarf_access_attribute accessibility; | |
15084 | struct attribute *attr = dwarf2_attr (die, DW_AT_accessibility, cu); | |
15085 | if (attr != NULL) | |
15086 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); | |
15087 | else | |
15088 | accessibility = dwarf2_default_access_attribute (die, cu); | |
15089 | switch (accessibility) | |
15090 | { | |
15091 | case DW_ACCESS_public: | |
15092 | /* The assumed value if neither private nor protected. */ | |
15093 | break; | |
15094 | case DW_ACCESS_private: | |
be2daae6 | 15095 | fp.is_private = 1; |
c191a687 KS |
15096 | break; |
15097 | case DW_ACCESS_protected: | |
be2daae6 | 15098 | fp.is_protected = 1; |
c191a687 KS |
15099 | break; |
15100 | default: | |
b98664d3 | 15101 | complaint (_("Unhandled DW_AT_accessibility value (%x)"), accessibility); |
c191a687 KS |
15102 | } |
15103 | ||
883fd55a | 15104 | if (die->tag == DW_TAG_typedef) |
be2daae6 | 15105 | fip->typedef_field_list.push_back (fp); |
883fd55a | 15106 | else |
be2daae6 | 15107 | fip->nested_types_list.push_back (fp); |
98751a41 JK |
15108 | } |
15109 | ||
c906108c SS |
15110 | /* Create the vector of fields, and attach it to the type. */ |
15111 | ||
15112 | static void | |
fba45db2 | 15113 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15114 | struct dwarf2_cu *cu) |
c906108c SS |
15115 | { |
15116 | int nfields = fip->nfields; | |
15117 | ||
15118 | /* Record the field count, allocate space for the array of fields, | |
15119 | and create blank accessibility bitfields if necessary. */ | |
15120 | TYPE_NFIELDS (type) = nfields; | |
15121 | TYPE_FIELDS (type) = (struct field *) | |
be2daae6 | 15122 | TYPE_ZALLOC (type, sizeof (struct field) * nfields); |
c906108c | 15123 | |
b4ba55a1 | 15124 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
15125 | { |
15126 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15127 | ||
15128 | TYPE_FIELD_PRIVATE_BITS (type) = | |
15129 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15130 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
15131 | ||
15132 | TYPE_FIELD_PROTECTED_BITS (type) = | |
15133 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15134 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
15135 | ||
774b6a14 TT |
15136 | TYPE_FIELD_IGNORE_BITS (type) = |
15137 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15138 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
15139 | } |
15140 | ||
15141 | /* If the type has baseclasses, allocate and clear a bit vector for | |
15142 | TYPE_FIELD_VIRTUAL_BITS. */ | |
be2daae6 | 15143 | if (!fip->baseclasses.empty () && cu->language != language_ada) |
c906108c | 15144 | { |
be2daae6 | 15145 | int num_bytes = B_BYTES (fip->baseclasses.size ()); |
fe1b8b76 | 15146 | unsigned char *pointer; |
c906108c SS |
15147 | |
15148 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
224c3ddb | 15149 | pointer = (unsigned char *) TYPE_ALLOC (type, num_bytes); |
fe1b8b76 | 15150 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; |
be2daae6 TT |
15151 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->baseclasses.size ()); |
15152 | TYPE_N_BASECLASSES (type) = fip->baseclasses.size (); | |
c906108c SS |
15153 | } |
15154 | ||
2ddeaf8a TT |
15155 | if (TYPE_FLAG_DISCRIMINATED_UNION (type)) |
15156 | { | |
15157 | struct discriminant_info *di = alloc_discriminant_info (type, -1, -1); | |
15158 | ||
be2daae6 | 15159 | for (int index = 0; index < nfields; ++index) |
2ddeaf8a | 15160 | { |
be2daae6 TT |
15161 | struct nextfield &field = fip->fields[index]; |
15162 | ||
15163 | if (field.variant.is_discriminant) | |
2ddeaf8a | 15164 | di->discriminant_index = index; |
be2daae6 | 15165 | else if (field.variant.default_branch) |
2ddeaf8a TT |
15166 | di->default_index = index; |
15167 | else | |
be2daae6 | 15168 | di->discriminants[index] = field.variant.discriminant_value; |
2ddeaf8a TT |
15169 | } |
15170 | } | |
15171 | ||
be2daae6 TT |
15172 | /* Copy the saved-up fields into the field vector. */ |
15173 | for (int i = 0; i < nfields; ++i) | |
c906108c | 15174 | { |
be2daae6 TT |
15175 | struct nextfield &field |
15176 | = ((i < fip->baseclasses.size ()) ? fip->baseclasses[i] | |
15177 | : fip->fields[i - fip->baseclasses.size ()]); | |
7d0ccb61 | 15178 | |
be2daae6 TT |
15179 | TYPE_FIELD (type, i) = field.field; |
15180 | switch (field.accessibility) | |
c906108c | 15181 | { |
c5aa993b | 15182 | case DW_ACCESS_private: |
b4ba55a1 | 15183 | if (cu->language != language_ada) |
be2daae6 | 15184 | SET_TYPE_FIELD_PRIVATE (type, i); |
c5aa993b | 15185 | break; |
c906108c | 15186 | |
c5aa993b | 15187 | case DW_ACCESS_protected: |
b4ba55a1 | 15188 | if (cu->language != language_ada) |
be2daae6 | 15189 | SET_TYPE_FIELD_PROTECTED (type, i); |
c5aa993b | 15190 | break; |
c906108c | 15191 | |
c5aa993b JM |
15192 | case DW_ACCESS_public: |
15193 | break; | |
c906108c | 15194 | |
c5aa993b JM |
15195 | default: |
15196 | /* Unknown accessibility. Complain and treat it as public. */ | |
15197 | { | |
b98664d3 | 15198 | complaint (_("unsupported accessibility %d"), |
be2daae6 | 15199 | field.accessibility); |
c5aa993b JM |
15200 | } |
15201 | break; | |
c906108c | 15202 | } |
be2daae6 | 15203 | if (i < fip->baseclasses.size ()) |
c906108c | 15204 | { |
be2daae6 | 15205 | switch (field.virtuality) |
c906108c | 15206 | { |
c5aa993b JM |
15207 | case DW_VIRTUALITY_virtual: |
15208 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 15209 | if (cu->language == language_ada) |
a73c6dcd | 15210 | error (_("unexpected virtuality in component of Ada type")); |
be2daae6 | 15211 | SET_TYPE_FIELD_VIRTUAL (type, i); |
c5aa993b | 15212 | break; |
c906108c SS |
15213 | } |
15214 | } | |
c906108c SS |
15215 | } |
15216 | } | |
15217 | ||
7d27a96d TT |
15218 | /* Return true if this member function is a constructor, false |
15219 | otherwise. */ | |
15220 | ||
15221 | static int | |
15222 | dwarf2_is_constructor (struct die_info *die, struct dwarf2_cu *cu) | |
15223 | { | |
15224 | const char *fieldname; | |
fe978cb0 | 15225 | const char *type_name; |
7d27a96d TT |
15226 | int len; |
15227 | ||
15228 | if (die->parent == NULL) | |
15229 | return 0; | |
15230 | ||
15231 | if (die->parent->tag != DW_TAG_structure_type | |
15232 | && die->parent->tag != DW_TAG_union_type | |
15233 | && die->parent->tag != DW_TAG_class_type) | |
15234 | return 0; | |
15235 | ||
15236 | fieldname = dwarf2_name (die, cu); | |
fe978cb0 PA |
15237 | type_name = dwarf2_name (die->parent, cu); |
15238 | if (fieldname == NULL || type_name == NULL) | |
7d27a96d TT |
15239 | return 0; |
15240 | ||
15241 | len = strlen (fieldname); | |
fe978cb0 PA |
15242 | return (strncmp (fieldname, type_name, len) == 0 |
15243 | && (type_name[len] == '\0' || type_name[len] == '<')); | |
7d27a96d TT |
15244 | } |
15245 | ||
c906108c SS |
15246 | /* Add a member function to the proper fieldlist. */ |
15247 | ||
15248 | static void | |
107d2387 | 15249 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 15250 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 15251 | { |
518817b3 | 15252 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 15253 | struct attribute *attr; |
c906108c | 15254 | int i; |
be2daae6 | 15255 | struct fnfieldlist *flp = nullptr; |
c906108c | 15256 | struct fn_field *fnp; |
15d034d0 | 15257 | const char *fieldname; |
f792889a | 15258 | struct type *this_type; |
60d5a603 | 15259 | enum dwarf_access_attribute accessibility; |
c906108c | 15260 | |
b4ba55a1 | 15261 | if (cu->language == language_ada) |
a73c6dcd | 15262 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 15263 | |
2df3850c | 15264 | /* Get name of member function. */ |
39cbfefa DJ |
15265 | fieldname = dwarf2_name (die, cu); |
15266 | if (fieldname == NULL) | |
2df3850c | 15267 | return; |
c906108c | 15268 | |
c906108c | 15269 | /* Look up member function name in fieldlist. */ |
be2daae6 | 15270 | for (i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15271 | { |
27bfe10e | 15272 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
be2daae6 TT |
15273 | { |
15274 | flp = &fip->fnfieldlists[i]; | |
15275 | break; | |
15276 | } | |
c906108c SS |
15277 | } |
15278 | ||
be2daae6 TT |
15279 | /* Create a new fnfieldlist if necessary. */ |
15280 | if (flp == nullptr) | |
c906108c | 15281 | { |
be2daae6 TT |
15282 | fip->fnfieldlists.emplace_back (); |
15283 | flp = &fip->fnfieldlists.back (); | |
c906108c | 15284 | flp->name = fieldname; |
be2daae6 | 15285 | i = fip->fnfieldlists.size () - 1; |
c906108c SS |
15286 | } |
15287 | ||
be2daae6 TT |
15288 | /* Create a new member function field and add it to the vector of |
15289 | fnfieldlists. */ | |
15290 | flp->fnfields.emplace_back (); | |
15291 | fnp = &flp->fnfields.back (); | |
3da10d80 KS |
15292 | |
15293 | /* Delay processing of the physname until later. */ | |
9c37b5ae | 15294 | if (cu->language == language_cplus) |
be2daae6 TT |
15295 | add_to_method_list (type, i, flp->fnfields.size () - 1, fieldname, |
15296 | die, cu); | |
3da10d80 KS |
15297 | else |
15298 | { | |
1d06ead6 | 15299 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
15300 | fnp->physname = physname ? physname : ""; |
15301 | } | |
15302 | ||
c906108c | 15303 | fnp->type = alloc_type (objfile); |
f792889a DJ |
15304 | this_type = read_type_die (die, cu); |
15305 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 15306 | { |
f792889a | 15307 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 15308 | |
f792889a | 15309 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
15310 | of the method itself (TYPE_CODE_METHOD). */ |
15311 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
15312 | TYPE_TARGET_TYPE (this_type), |
15313 | TYPE_FIELDS (this_type), | |
15314 | TYPE_NFIELDS (this_type), | |
15315 | TYPE_VARARGS (this_type)); | |
c906108c SS |
15316 | |
15317 | /* Handle static member functions. | |
c5aa993b | 15318 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
15319 | member functions. G++ helps GDB by marking the first |
15320 | parameter for non-static member functions (which is the this | |
15321 | pointer) as artificial. We obtain this information from | |
15322 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 15323 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
15324 | fnp->voffset = VOFFSET_STATIC; |
15325 | } | |
15326 | else | |
b98664d3 | 15327 | complaint (_("member function type missing for '%s'"), |
3da10d80 | 15328 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
15329 | |
15330 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 15331 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 15332 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 15333 | |
3e43a32a MS |
15334 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
15335 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
15336 | |
15337 | /* Get accessibility. */ | |
e142c38c | 15338 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c | 15339 | if (attr) |
aead7601 | 15340 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); |
60d5a603 JK |
15341 | else |
15342 | accessibility = dwarf2_default_access_attribute (die, cu); | |
15343 | switch (accessibility) | |
c906108c | 15344 | { |
60d5a603 JK |
15345 | case DW_ACCESS_private: |
15346 | fnp->is_private = 1; | |
15347 | break; | |
15348 | case DW_ACCESS_protected: | |
15349 | fnp->is_protected = 1; | |
15350 | break; | |
c906108c SS |
15351 | } |
15352 | ||
b02dede2 | 15353 | /* Check for artificial methods. */ |
e142c38c | 15354 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
15355 | if (attr && DW_UNSND (attr) != 0) |
15356 | fnp->is_artificial = 1; | |
15357 | ||
7d27a96d TT |
15358 | fnp->is_constructor = dwarf2_is_constructor (die, cu); |
15359 | ||
0d564a31 | 15360 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
15361 | function. For older versions of GCC, this is an offset in the |
15362 | appropriate virtual table, as specified by DW_AT_containing_type. | |
15363 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
15364 | to the object address. */ |
15365 | ||
e142c38c | 15366 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
aec5aa8b | 15367 | if (attr) |
8e19ed76 | 15368 | { |
aec5aa8b | 15369 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 15370 | { |
aec5aa8b TT |
15371 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
15372 | { | |
15373 | /* Old-style GCC. */ | |
15374 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
15375 | } | |
15376 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
15377 | || (DW_BLOCK (attr)->size > 1 | |
15378 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
15379 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
15380 | { | |
aec5aa8b TT |
15381 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); |
15382 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
15383 | dwarf2_complex_location_expr_complaint (); | |
15384 | else | |
15385 | fnp->voffset /= cu->header.addr_size; | |
15386 | fnp->voffset += 2; | |
15387 | } | |
15388 | else | |
15389 | dwarf2_complex_location_expr_complaint (); | |
15390 | ||
15391 | if (!fnp->fcontext) | |
7e993ebf KS |
15392 | { |
15393 | /* If there is no `this' field and no DW_AT_containing_type, | |
15394 | we cannot actually find a base class context for the | |
15395 | vtable! */ | |
15396 | if (TYPE_NFIELDS (this_type) == 0 | |
15397 | || !TYPE_FIELD_ARTIFICIAL (this_type, 0)) | |
15398 | { | |
b98664d3 | 15399 | complaint (_("cannot determine context for virtual member " |
9d8780f0 SM |
15400 | "function \"%s\" (offset %s)"), |
15401 | fieldname, sect_offset_str (die->sect_off)); | |
7e993ebf KS |
15402 | } |
15403 | else | |
15404 | { | |
15405 | fnp->fcontext | |
15406 | = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
15407 | } | |
15408 | } | |
aec5aa8b | 15409 | } |
3690dd37 | 15410 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 15411 | { |
4d3c2250 | 15412 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
15413 | } |
15414 | else | |
15415 | { | |
4d3c2250 KB |
15416 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
15417 | fieldname); | |
8e19ed76 | 15418 | } |
0d564a31 | 15419 | } |
d48cc9dd DJ |
15420 | else |
15421 | { | |
15422 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
15423 | if (attr && DW_UNSND (attr)) | |
15424 | { | |
15425 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
b98664d3 | 15426 | complaint (_("Member function \"%s\" (offset %s) is virtual " |
3e43a32a | 15427 | "but the vtable offset is not specified"), |
9d8780f0 | 15428 | fieldname, sect_offset_str (die->sect_off)); |
9655fd1a | 15429 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
15430 | TYPE_CPLUS_DYNAMIC (type) = 1; |
15431 | } | |
15432 | } | |
c906108c SS |
15433 | } |
15434 | ||
15435 | /* Create the vector of member function fields, and attach it to the type. */ | |
15436 | ||
15437 | static void | |
fba45db2 | 15438 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15439 | struct dwarf2_cu *cu) |
c906108c | 15440 | { |
b4ba55a1 | 15441 | if (cu->language == language_ada) |
a73c6dcd | 15442 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 15443 | |
c906108c SS |
15444 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
15445 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
be2daae6 TT |
15446 | TYPE_ALLOC (type, |
15447 | sizeof (struct fn_fieldlist) * fip->fnfieldlists.size ()); | |
c906108c | 15448 | |
be2daae6 | 15449 | for (int i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15450 | { |
be2daae6 | 15451 | struct fnfieldlist &nf = fip->fnfieldlists[i]; |
c906108c | 15452 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); |
c906108c | 15453 | |
be2daae6 TT |
15454 | TYPE_FN_FIELDLIST_NAME (type, i) = nf.name; |
15455 | TYPE_FN_FIELDLIST_LENGTH (type, i) = nf.fnfields.size (); | |
c906108c | 15456 | fn_flp->fn_fields = (struct fn_field *) |
be2daae6 TT |
15457 | TYPE_ALLOC (type, sizeof (struct fn_field) * nf.fnfields.size ()); |
15458 | ||
15459 | for (int k = 0; k < nf.fnfields.size (); ++k) | |
15460 | fn_flp->fn_fields[k] = nf.fnfields[k]; | |
c906108c SS |
15461 | } |
15462 | ||
be2daae6 | 15463 | TYPE_NFN_FIELDS (type) = fip->fnfieldlists.size (); |
c906108c SS |
15464 | } |
15465 | ||
1168df01 JB |
15466 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
15467 | language, zero otherwise. */ | |
15468 | static int | |
15469 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
15470 | { | |
15471 | static const char vptr[] = "_vptr"; | |
15472 | ||
9c37b5ae TT |
15473 | /* Look for the C++ form of the vtable. */ |
15474 | if (startswith (name, vptr) && is_cplus_marker (name[sizeof (vptr) - 1])) | |
1168df01 JB |
15475 | return 1; |
15476 | ||
15477 | return 0; | |
15478 | } | |
15479 | ||
c0dd20ea | 15480 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
15481 | functions, with the ABI-specified layout. If TYPE describes |
15482 | such a structure, smash it into a member function type. | |
61049d3b DJ |
15483 | |
15484 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
15485 | This is GCC PR debug/28767. */ | |
c0dd20ea | 15486 | |
0b92b5bb TT |
15487 | static void |
15488 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 15489 | { |
09e2d7c7 | 15490 | struct type *pfn_type, *self_type, *new_type; |
c0dd20ea DJ |
15491 | |
15492 | /* Check for a structure with no name and two children. */ | |
0b92b5bb TT |
15493 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2) |
15494 | return; | |
c0dd20ea DJ |
15495 | |
15496 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
15497 | if (TYPE_FIELD_NAME (type, 0) == NULL |
15498 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
15499 | || TYPE_FIELD_NAME (type, 1) == NULL | |
15500 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
15501 | return; | |
c0dd20ea DJ |
15502 | |
15503 | /* Find the type of the method. */ | |
0b92b5bb | 15504 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea DJ |
15505 | if (pfn_type == NULL |
15506 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
15507 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
0b92b5bb | 15508 | return; |
c0dd20ea DJ |
15509 | |
15510 | /* Look for the "this" argument. */ | |
15511 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
15512 | if (TYPE_NFIELDS (pfn_type) == 0 | |
0b92b5bb | 15513 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
c0dd20ea | 15514 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) |
0b92b5bb | 15515 | return; |
c0dd20ea | 15516 | |
09e2d7c7 | 15517 | self_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); |
0b92b5bb | 15518 | new_type = alloc_type (objfile); |
09e2d7c7 | 15519 | smash_to_method_type (new_type, self_type, TYPE_TARGET_TYPE (pfn_type), |
c0dd20ea DJ |
15520 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), |
15521 | TYPE_VARARGS (pfn_type)); | |
0b92b5bb | 15522 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 15523 | } |
1168df01 | 15524 | |
2b4424c3 TT |
15525 | /* If the DIE has a DW_AT_alignment attribute, return its value, doing |
15526 | appropriate error checking and issuing complaints if there is a | |
15527 | problem. */ | |
15528 | ||
15529 | static ULONGEST | |
15530 | get_alignment (struct dwarf2_cu *cu, struct die_info *die) | |
15531 | { | |
15532 | struct attribute *attr = dwarf2_attr (die, DW_AT_alignment, cu); | |
15533 | ||
15534 | if (attr == nullptr) | |
15535 | return 0; | |
15536 | ||
15537 | if (!attr_form_is_constant (attr)) | |
15538 | { | |
b98664d3 | 15539 | complaint (_("DW_AT_alignment must have constant form" |
2b4424c3 TT |
15540 | " - DIE at %s [in module %s]"), |
15541 | sect_offset_str (die->sect_off), | |
15542 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15543 | return 0; | |
15544 | } | |
15545 | ||
15546 | ULONGEST align; | |
15547 | if (attr->form == DW_FORM_sdata) | |
15548 | { | |
15549 | LONGEST val = DW_SND (attr); | |
15550 | if (val < 0) | |
15551 | { | |
b98664d3 | 15552 | complaint (_("DW_AT_alignment value must not be negative" |
2b4424c3 TT |
15553 | " - DIE at %s [in module %s]"), |
15554 | sect_offset_str (die->sect_off), | |
15555 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15556 | return 0; | |
15557 | } | |
15558 | align = val; | |
15559 | } | |
15560 | else | |
15561 | align = DW_UNSND (attr); | |
15562 | ||
15563 | if (align == 0) | |
15564 | { | |
b98664d3 | 15565 | complaint (_("DW_AT_alignment value must not be zero" |
2b4424c3 TT |
15566 | " - DIE at %s [in module %s]"), |
15567 | sect_offset_str (die->sect_off), | |
15568 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15569 | return 0; | |
15570 | } | |
15571 | if ((align & (align - 1)) != 0) | |
15572 | { | |
b98664d3 | 15573 | complaint (_("DW_AT_alignment value must be a power of 2" |
2b4424c3 TT |
15574 | " - DIE at %s [in module %s]"), |
15575 | sect_offset_str (die->sect_off), | |
15576 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15577 | return 0; | |
15578 | } | |
15579 | ||
15580 | return align; | |
15581 | } | |
15582 | ||
15583 | /* If the DIE has a DW_AT_alignment attribute, use its value to set | |
15584 | the alignment for TYPE. */ | |
15585 | ||
15586 | static void | |
15587 | maybe_set_alignment (struct dwarf2_cu *cu, struct die_info *die, | |
15588 | struct type *type) | |
15589 | { | |
15590 | if (!set_type_align (type, get_alignment (cu, die))) | |
b98664d3 | 15591 | complaint (_("DW_AT_alignment value too large" |
2b4424c3 TT |
15592 | " - DIE at %s [in module %s]"), |
15593 | sect_offset_str (die->sect_off), | |
15594 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15595 | } | |
685b1105 | 15596 | |
c906108c | 15597 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
15598 | (definition) to create a type for the structure or union. Fill in |
15599 | the type's name and general properties; the members will not be | |
83655187 DE |
15600 | processed until process_structure_scope. A symbol table entry for |
15601 | the type will also not be done until process_structure_scope (assuming | |
15602 | the type has a name). | |
c906108c | 15603 | |
c767944b DJ |
15604 | NOTE: we need to call these functions regardless of whether or not the |
15605 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c | 15606 | structure or union. This gets the type entered into our set of |
83655187 | 15607 | user defined types. */ |
c906108c | 15608 | |
f792889a | 15609 | static struct type * |
134d01f1 | 15610 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 15611 | { |
518817b3 | 15612 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c SS |
15613 | struct type *type; |
15614 | struct attribute *attr; | |
15d034d0 | 15615 | const char *name; |
c906108c | 15616 | |
348e048f DE |
15617 | /* If the definition of this type lives in .debug_types, read that type. |
15618 | Don't follow DW_AT_specification though, that will take us back up | |
15619 | the chain and we want to go down. */ | |
45e58e77 | 15620 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
15621 | if (attr) |
15622 | { | |
ac9ec31b | 15623 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 15624 | |
ac9ec31b | 15625 | /* The type's CU may not be the same as CU. |
02142a6c | 15626 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
15627 | return set_die_type (die, type, cu); |
15628 | } | |
15629 | ||
c0dd20ea | 15630 | type = alloc_type (objfile); |
c906108c | 15631 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 15632 | |
39cbfefa DJ |
15633 | name = dwarf2_name (die, cu); |
15634 | if (name != NULL) | |
c906108c | 15635 | { |
987504bb | 15636 | if (cu->language == language_cplus |
c44af4eb TT |
15637 | || cu->language == language_d |
15638 | || cu->language == language_rust) | |
63d06c5c | 15639 | { |
15d034d0 | 15640 | const char *full_name = dwarf2_full_name (name, die, cu); |
3da10d80 KS |
15641 | |
15642 | /* dwarf2_full_name might have already finished building the DIE's | |
15643 | type. If so, there is no need to continue. */ | |
15644 | if (get_die_type (die, cu) != NULL) | |
15645 | return get_die_type (die, cu); | |
15646 | ||
e86ca25f | 15647 | TYPE_NAME (type) = full_name; |
63d06c5c DC |
15648 | } |
15649 | else | |
15650 | { | |
d8151005 DJ |
15651 | /* The name is already allocated along with this objfile, so |
15652 | we don't need to duplicate it for the type. */ | |
e86ca25f | 15653 | TYPE_NAME (type) = name; |
63d06c5c | 15654 | } |
c906108c SS |
15655 | } |
15656 | ||
15657 | if (die->tag == DW_TAG_structure_type) | |
15658 | { | |
15659 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
15660 | } | |
15661 | else if (die->tag == DW_TAG_union_type) | |
15662 | { | |
15663 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
15664 | } | |
2ddeaf8a TT |
15665 | else if (die->tag == DW_TAG_variant_part) |
15666 | { | |
15667 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
15668 | TYPE_FLAG_DISCRIMINATED_UNION (type) = 1; | |
15669 | } | |
c906108c SS |
15670 | else |
15671 | { | |
4753d33b | 15672 | TYPE_CODE (type) = TYPE_CODE_STRUCT; |
c906108c SS |
15673 | } |
15674 | ||
0cc2414c TT |
15675 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
15676 | TYPE_DECLARED_CLASS (type) = 1; | |
15677 | ||
e142c38c | 15678 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
15679 | if (attr) |
15680 | { | |
155bfbd3 JB |
15681 | if (attr_form_is_constant (attr)) |
15682 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
15683 | else | |
15684 | { | |
15685 | /* For the moment, dynamic type sizes are not supported | |
15686 | by GDB's struct type. The actual size is determined | |
15687 | on-demand when resolving the type of a given object, | |
15688 | so set the type's length to zero for now. Otherwise, | |
15689 | we record an expression as the length, and that expression | |
15690 | could lead to a very large value, which could eventually | |
15691 | lead to us trying to allocate that much memory when creating | |
15692 | a value of that type. */ | |
15693 | TYPE_LENGTH (type) = 0; | |
15694 | } | |
c906108c SS |
15695 | } |
15696 | else | |
15697 | { | |
15698 | TYPE_LENGTH (type) = 0; | |
15699 | } | |
15700 | ||
2b4424c3 TT |
15701 | maybe_set_alignment (cu, die, type); |
15702 | ||
5230b05a | 15703 | if (producer_is_icc_lt_14 (cu) && (TYPE_LENGTH (type) == 0)) |
685b1105 | 15704 | { |
5230b05a WT |
15705 | /* ICC<14 does not output the required DW_AT_declaration on |
15706 | incomplete types, but gives them a size of zero. */ | |
422b1cb0 | 15707 | TYPE_STUB (type) = 1; |
685b1105 JK |
15708 | } |
15709 | else | |
15710 | TYPE_STUB_SUPPORTED (type) = 1; | |
15711 | ||
dc718098 | 15712 | if (die_is_declaration (die, cu)) |
876cecd0 | 15713 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
15714 | else if (attr == NULL && die->child == NULL |
15715 | && producer_is_realview (cu->producer)) | |
15716 | /* RealView does not output the required DW_AT_declaration | |
15717 | on incomplete types. */ | |
15718 | TYPE_STUB (type) = 1; | |
dc718098 | 15719 | |
c906108c SS |
15720 | /* We need to add the type field to the die immediately so we don't |
15721 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 15722 | type within the structure itself. */ |
1c379e20 | 15723 | set_die_type (die, type, cu); |
c906108c | 15724 | |
7e314c57 JK |
15725 | /* set_die_type should be already done. */ |
15726 | set_descriptive_type (type, die, cu); | |
15727 | ||
c767944b DJ |
15728 | return type; |
15729 | } | |
15730 | ||
2ddeaf8a TT |
15731 | /* A helper for process_structure_scope that handles a single member |
15732 | DIE. */ | |
15733 | ||
15734 | static void | |
15735 | handle_struct_member_die (struct die_info *child_die, struct type *type, | |
15736 | struct field_info *fi, | |
15737 | std::vector<struct symbol *> *template_args, | |
15738 | struct dwarf2_cu *cu) | |
15739 | { | |
15740 | if (child_die->tag == DW_TAG_member | |
15741 | || child_die->tag == DW_TAG_variable | |
15742 | || child_die->tag == DW_TAG_variant_part) | |
15743 | { | |
15744 | /* NOTE: carlton/2002-11-05: A C++ static data member | |
15745 | should be a DW_TAG_member that is a declaration, but | |
15746 | all versions of G++ as of this writing (so through at | |
15747 | least 3.2.1) incorrectly generate DW_TAG_variable | |
15748 | tags for them instead. */ | |
15749 | dwarf2_add_field (fi, child_die, cu); | |
15750 | } | |
15751 | else if (child_die->tag == DW_TAG_subprogram) | |
15752 | { | |
15753 | /* Rust doesn't have member functions in the C++ sense. | |
15754 | However, it does emit ordinary functions as children | |
15755 | of a struct DIE. */ | |
15756 | if (cu->language == language_rust) | |
15757 | read_func_scope (child_die, cu); | |
15758 | else | |
15759 | { | |
15760 | /* C++ member function. */ | |
15761 | dwarf2_add_member_fn (fi, child_die, type, cu); | |
15762 | } | |
15763 | } | |
15764 | else if (child_die->tag == DW_TAG_inheritance) | |
15765 | { | |
15766 | /* C++ base class field. */ | |
15767 | dwarf2_add_field (fi, child_die, cu); | |
15768 | } | |
15769 | else if (type_can_define_types (child_die)) | |
15770 | dwarf2_add_type_defn (fi, child_die, cu); | |
15771 | else if (child_die->tag == DW_TAG_template_type_param | |
15772 | || child_die->tag == DW_TAG_template_value_param) | |
15773 | { | |
15774 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
15775 | ||
15776 | if (arg != NULL) | |
15777 | template_args->push_back (arg); | |
15778 | } | |
15779 | else if (child_die->tag == DW_TAG_variant) | |
15780 | { | |
15781 | /* In a variant we want to get the discriminant and also add a | |
15782 | field for our sole member child. */ | |
15783 | struct attribute *discr = dwarf2_attr (child_die, DW_AT_discr_value, cu); | |
15784 | ||
15785 | for (struct die_info *variant_child = child_die->child; | |
15786 | variant_child != NULL; | |
15787 | variant_child = sibling_die (variant_child)) | |
15788 | { | |
15789 | if (variant_child->tag == DW_TAG_member) | |
15790 | { | |
15791 | handle_struct_member_die (variant_child, type, fi, | |
15792 | template_args, cu); | |
15793 | /* Only handle the one. */ | |
15794 | break; | |
15795 | } | |
15796 | } | |
15797 | ||
15798 | /* We don't handle this but we might as well report it if we see | |
15799 | it. */ | |
15800 | if (dwarf2_attr (child_die, DW_AT_discr_list, cu) != nullptr) | |
b98664d3 | 15801 | complaint (_("DW_AT_discr_list is not supported yet" |
2ddeaf8a TT |
15802 | " - DIE at %s [in module %s]"), |
15803 | sect_offset_str (child_die->sect_off), | |
15804 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15805 | ||
15806 | /* The first field was just added, so we can stash the | |
15807 | discriminant there. */ | |
be2daae6 | 15808 | gdb_assert (!fi->fields.empty ()); |
2ddeaf8a | 15809 | if (discr == NULL) |
be2daae6 | 15810 | fi->fields.back ().variant.default_branch = true; |
2ddeaf8a | 15811 | else |
be2daae6 | 15812 | fi->fields.back ().variant.discriminant_value = DW_UNSND (discr); |
2ddeaf8a TT |
15813 | } |
15814 | } | |
15815 | ||
c767944b DJ |
15816 | /* Finish creating a structure or union type, including filling in |
15817 | its members and creating a symbol for it. */ | |
15818 | ||
15819 | static void | |
15820 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
15821 | { | |
518817b3 | 15822 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
ca040673 | 15823 | struct die_info *child_die; |
c767944b DJ |
15824 | struct type *type; |
15825 | ||
15826 | type = get_die_type (die, cu); | |
15827 | if (type == NULL) | |
15828 | type = read_structure_type (die, cu); | |
15829 | ||
2ddeaf8a TT |
15830 | /* When reading a DW_TAG_variant_part, we need to notice when we |
15831 | read the discriminant member, so we can record it later in the | |
15832 | discriminant_info. */ | |
15833 | bool is_variant_part = TYPE_FLAG_DISCRIMINATED_UNION (type); | |
15834 | sect_offset discr_offset; | |
15835 | ||
15836 | if (is_variant_part) | |
15837 | { | |
15838 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr, cu); | |
15839 | if (discr == NULL) | |
15840 | { | |
15841 | /* Maybe it's a univariant form, an extension we support. | |
15842 | In this case arrange not to check the offset. */ | |
15843 | is_variant_part = false; | |
15844 | } | |
15845 | else if (attr_form_is_ref (discr)) | |
15846 | { | |
15847 | struct dwarf2_cu *target_cu = cu; | |
15848 | struct die_info *target_die = follow_die_ref (die, discr, &target_cu); | |
15849 | ||
15850 | discr_offset = target_die->sect_off; | |
15851 | } | |
15852 | else | |
15853 | { | |
b98664d3 | 15854 | complaint (_("DW_AT_discr does not have DIE reference form" |
2ddeaf8a TT |
15855 | " - DIE at %s [in module %s]"), |
15856 | sect_offset_str (die->sect_off), | |
15857 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15858 | is_variant_part = false; | |
15859 | } | |
15860 | } | |
15861 | ||
e142c38c | 15862 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
15863 | { |
15864 | struct field_info fi; | |
2f4732b0 | 15865 | std::vector<struct symbol *> template_args; |
c906108c | 15866 | |
639d11d3 | 15867 | child_die = die->child; |
c906108c SS |
15868 | |
15869 | while (child_die && child_die->tag) | |
15870 | { | |
2ddeaf8a | 15871 | handle_struct_member_die (child_die, type, &fi, &template_args, cu); |
34eaf542 | 15872 | |
2ddeaf8a | 15873 | if (is_variant_part && discr_offset == child_die->sect_off) |
be2daae6 | 15874 | fi.fields.back ().variant.is_discriminant = true; |
34eaf542 | 15875 | |
c906108c SS |
15876 | child_die = sibling_die (child_die); |
15877 | } | |
15878 | ||
34eaf542 | 15879 | /* Attach template arguments to type. */ |
2f4732b0 | 15880 | if (!template_args.empty ()) |
34eaf542 TT |
15881 | { |
15882 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
2f4732b0 | 15883 | TYPE_N_TEMPLATE_ARGUMENTS (type) = template_args.size (); |
34eaf542 | 15884 | TYPE_TEMPLATE_ARGUMENTS (type) |
8d749320 SM |
15885 | = XOBNEWVEC (&objfile->objfile_obstack, |
15886 | struct symbol *, | |
15887 | TYPE_N_TEMPLATE_ARGUMENTS (type)); | |
34eaf542 | 15888 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), |
2f4732b0 | 15889 | template_args.data (), |
34eaf542 TT |
15890 | (TYPE_N_TEMPLATE_ARGUMENTS (type) |
15891 | * sizeof (struct symbol *))); | |
34eaf542 TT |
15892 | } |
15893 | ||
c906108c SS |
15894 | /* Attach fields and member functions to the type. */ |
15895 | if (fi.nfields) | |
e7c27a73 | 15896 | dwarf2_attach_fields_to_type (&fi, type, cu); |
be2daae6 | 15897 | if (!fi.fnfieldlists.empty ()) |
c906108c | 15898 | { |
e7c27a73 | 15899 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 15900 | |
c5aa993b | 15901 | /* Get the type which refers to the base class (possibly this |
c906108c | 15902 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
15903 | class from the DW_AT_containing_type attribute. This use of |
15904 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 15905 | |
e142c38c | 15906 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 15907 | { |
e7c27a73 | 15908 | struct type *t = die_containing_type (die, cu); |
c906108c | 15909 | |
ae6ae975 | 15910 | set_type_vptr_basetype (type, t); |
c906108c SS |
15911 | if (type == t) |
15912 | { | |
c906108c SS |
15913 | int i; |
15914 | ||
15915 | /* Our own class provides vtbl ptr. */ | |
15916 | for (i = TYPE_NFIELDS (t) - 1; | |
15917 | i >= TYPE_N_BASECLASSES (t); | |
15918 | --i) | |
15919 | { | |
0d5cff50 | 15920 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 15921 | |
1168df01 | 15922 | if (is_vtable_name (fieldname, cu)) |
c906108c | 15923 | { |
ae6ae975 | 15924 | set_type_vptr_fieldno (type, i); |
c906108c SS |
15925 | break; |
15926 | } | |
15927 | } | |
15928 | ||
15929 | /* Complain if virtual function table field not found. */ | |
15930 | if (i < TYPE_N_BASECLASSES (t)) | |
b98664d3 | 15931 | complaint (_("virtual function table pointer " |
3e43a32a | 15932 | "not found when defining class '%s'"), |
e86ca25f | 15933 | TYPE_NAME (type) ? TYPE_NAME (type) : ""); |
c906108c SS |
15934 | } |
15935 | else | |
15936 | { | |
ae6ae975 | 15937 | set_type_vptr_fieldno (type, TYPE_VPTR_FIELDNO (t)); |
c906108c SS |
15938 | } |
15939 | } | |
f6235d4c | 15940 | else if (cu->producer |
61012eef | 15941 | && startswith (cu->producer, "IBM(R) XL C/C++ Advanced Edition")) |
f6235d4c EZ |
15942 | { |
15943 | /* The IBM XLC compiler does not provide direct indication | |
15944 | of the containing type, but the vtable pointer is | |
15945 | always named __vfp. */ | |
15946 | ||
15947 | int i; | |
15948 | ||
15949 | for (i = TYPE_NFIELDS (type) - 1; | |
15950 | i >= TYPE_N_BASECLASSES (type); | |
15951 | --i) | |
15952 | { | |
15953 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
15954 | { | |
ae6ae975 DE |
15955 | set_type_vptr_fieldno (type, i); |
15956 | set_type_vptr_basetype (type, type); | |
f6235d4c EZ |
15957 | break; |
15958 | } | |
15959 | } | |
15960 | } | |
c906108c | 15961 | } |
98751a41 JK |
15962 | |
15963 | /* Copy fi.typedef_field_list linked list elements content into the | |
15964 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
be2daae6 | 15965 | if (!fi.typedef_field_list.empty ()) |
98751a41 | 15966 | { |
be2daae6 | 15967 | int count = fi.typedef_field_list.size (); |
98751a41 | 15968 | |
a0d7a4ff | 15969 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 | 15970 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
883fd55a | 15971 | = ((struct decl_field *) |
be2daae6 TT |
15972 | TYPE_ALLOC (type, |
15973 | sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * count)); | |
15974 | TYPE_TYPEDEF_FIELD_COUNT (type) = count; | |
6e70227d | 15975 | |
be2daae6 TT |
15976 | for (int i = 0; i < fi.typedef_field_list.size (); ++i) |
15977 | TYPE_TYPEDEF_FIELD (type, i) = fi.typedef_field_list[i]; | |
98751a41 | 15978 | } |
c767944b | 15979 | |
883fd55a KS |
15980 | /* Copy fi.nested_types_list linked list elements content into the |
15981 | allocated array TYPE_NESTED_TYPES_ARRAY (type). */ | |
be2daae6 | 15982 | if (!fi.nested_types_list.empty () && cu->language != language_ada) |
883fd55a | 15983 | { |
be2daae6 | 15984 | int count = fi.nested_types_list.size (); |
883fd55a KS |
15985 | |
15986 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15987 | TYPE_NESTED_TYPES_ARRAY (type) | |
15988 | = ((struct decl_field *) | |
be2daae6 TT |
15989 | TYPE_ALLOC (type, sizeof (struct decl_field) * count)); |
15990 | TYPE_NESTED_TYPES_COUNT (type) = count; | |
883fd55a | 15991 | |
be2daae6 TT |
15992 | for (int i = 0; i < fi.nested_types_list.size (); ++i) |
15993 | TYPE_NESTED_TYPES_FIELD (type, i) = fi.nested_types_list[i]; | |
883fd55a | 15994 | } |
c906108c | 15995 | } |
63d06c5c | 15996 | |
bb5ed363 | 15997 | quirk_gcc_member_function_pointer (type, objfile); |
c9317f21 TT |
15998 | if (cu->language == language_rust && die->tag == DW_TAG_union_type) |
15999 | cu->rust_unions.push_back (type); | |
0b92b5bb | 16000 | |
90aeadfc DC |
16001 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
16002 | snapshots) has been known to create a die giving a declaration | |
16003 | for a class that has, as a child, a die giving a definition for a | |
16004 | nested class. So we have to process our children even if the | |
16005 | current die is a declaration. Normally, of course, a declaration | |
16006 | won't have any children at all. */ | |
134d01f1 | 16007 | |
ca040673 DE |
16008 | child_die = die->child; |
16009 | ||
90aeadfc DC |
16010 | while (child_die != NULL && child_die->tag) |
16011 | { | |
16012 | if (child_die->tag == DW_TAG_member | |
16013 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
16014 | || child_die->tag == DW_TAG_inheritance |
16015 | || child_die->tag == DW_TAG_template_value_param | |
16016 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 16017 | { |
90aeadfc | 16018 | /* Do nothing. */ |
134d01f1 | 16019 | } |
90aeadfc DC |
16020 | else |
16021 | process_die (child_die, cu); | |
134d01f1 | 16022 | |
90aeadfc | 16023 | child_die = sibling_die (child_die); |
134d01f1 DJ |
16024 | } |
16025 | ||
fa4028e9 JB |
16026 | /* Do not consider external references. According to the DWARF standard, |
16027 | these DIEs are identified by the fact that they have no byte_size | |
16028 | attribute, and a declaration attribute. */ | |
16029 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
16030 | || !die_is_declaration (die, cu)) | |
c767944b | 16031 | new_symbol (die, type, cu); |
134d01f1 DJ |
16032 | } |
16033 | ||
55426c9d JB |
16034 | /* Assuming DIE is an enumeration type, and TYPE is its associated type, |
16035 | update TYPE using some information only available in DIE's children. */ | |
16036 | ||
16037 | static void | |
16038 | update_enumeration_type_from_children (struct die_info *die, | |
16039 | struct type *type, | |
16040 | struct dwarf2_cu *cu) | |
16041 | { | |
60f7655a | 16042 | struct die_info *child_die; |
55426c9d JB |
16043 | int unsigned_enum = 1; |
16044 | int flag_enum = 1; | |
16045 | ULONGEST mask = 0; | |
55426c9d | 16046 | |
8268c778 | 16047 | auto_obstack obstack; |
55426c9d | 16048 | |
60f7655a DE |
16049 | for (child_die = die->child; |
16050 | child_die != NULL && child_die->tag; | |
16051 | child_die = sibling_die (child_die)) | |
55426c9d JB |
16052 | { |
16053 | struct attribute *attr; | |
16054 | LONGEST value; | |
16055 | const gdb_byte *bytes; | |
16056 | struct dwarf2_locexpr_baton *baton; | |
16057 | const char *name; | |
60f7655a | 16058 | |
55426c9d JB |
16059 | if (child_die->tag != DW_TAG_enumerator) |
16060 | continue; | |
16061 | ||
16062 | attr = dwarf2_attr (child_die, DW_AT_const_value, cu); | |
16063 | if (attr == NULL) | |
16064 | continue; | |
16065 | ||
16066 | name = dwarf2_name (child_die, cu); | |
16067 | if (name == NULL) | |
16068 | name = "<anonymous enumerator>"; | |
16069 | ||
16070 | dwarf2_const_value_attr (attr, type, name, &obstack, cu, | |
16071 | &value, &bytes, &baton); | |
16072 | if (value < 0) | |
16073 | { | |
16074 | unsigned_enum = 0; | |
16075 | flag_enum = 0; | |
16076 | } | |
16077 | else if ((mask & value) != 0) | |
16078 | flag_enum = 0; | |
16079 | else | |
16080 | mask |= value; | |
16081 | ||
16082 | /* If we already know that the enum type is neither unsigned, nor | |
16083 | a flag type, no need to look at the rest of the enumerates. */ | |
16084 | if (!unsigned_enum && !flag_enum) | |
16085 | break; | |
55426c9d JB |
16086 | } |
16087 | ||
16088 | if (unsigned_enum) | |
16089 | TYPE_UNSIGNED (type) = 1; | |
16090 | if (flag_enum) | |
16091 | TYPE_FLAG_ENUM (type) = 1; | |
55426c9d JB |
16092 | } |
16093 | ||
134d01f1 DJ |
16094 | /* Given a DW_AT_enumeration_type die, set its type. We do not |
16095 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 16096 | |
f792889a | 16097 | static struct type * |
134d01f1 | 16098 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16099 | { |
518817b3 | 16100 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 16101 | struct type *type; |
c906108c | 16102 | struct attribute *attr; |
0114d602 | 16103 | const char *name; |
134d01f1 | 16104 | |
348e048f DE |
16105 | /* If the definition of this type lives in .debug_types, read that type. |
16106 | Don't follow DW_AT_specification though, that will take us back up | |
16107 | the chain and we want to go down. */ | |
45e58e77 | 16108 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
16109 | if (attr) |
16110 | { | |
ac9ec31b | 16111 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 16112 | |
ac9ec31b | 16113 | /* The type's CU may not be the same as CU. |
02142a6c | 16114 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
16115 | return set_die_type (die, type, cu); |
16116 | } | |
16117 | ||
c906108c SS |
16118 | type = alloc_type (objfile); |
16119 | ||
16120 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
94af9270 | 16121 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 16122 | if (name != NULL) |
e86ca25f | 16123 | TYPE_NAME (type) = name; |
c906108c | 16124 | |
0626fc76 TT |
16125 | attr = dwarf2_attr (die, DW_AT_type, cu); |
16126 | if (attr != NULL) | |
16127 | { | |
16128 | struct type *underlying_type = die_type (die, cu); | |
16129 | ||
16130 | TYPE_TARGET_TYPE (type) = underlying_type; | |
16131 | } | |
16132 | ||
e142c38c | 16133 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
16134 | if (attr) |
16135 | { | |
16136 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16137 | } | |
16138 | else | |
16139 | { | |
16140 | TYPE_LENGTH (type) = 0; | |
16141 | } | |
16142 | ||
2b4424c3 TT |
16143 | maybe_set_alignment (cu, die, type); |
16144 | ||
137033e9 JB |
16145 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
16146 | declared as private in the package spec, and then defined only | |
16147 | inside the package body. Such types are known as Taft Amendment | |
16148 | Types. When another package uses such a type, an incomplete DIE | |
16149 | may be generated by the compiler. */ | |
02eb380e | 16150 | if (die_is_declaration (die, cu)) |
876cecd0 | 16151 | TYPE_STUB (type) = 1; |
02eb380e | 16152 | |
0626fc76 TT |
16153 | /* Finish the creation of this type by using the enum's children. |
16154 | We must call this even when the underlying type has been provided | |
16155 | so that we can determine if we're looking at a "flag" enum. */ | |
55426c9d JB |
16156 | update_enumeration_type_from_children (die, type, cu); |
16157 | ||
0626fc76 TT |
16158 | /* If this type has an underlying type that is not a stub, then we |
16159 | may use its attributes. We always use the "unsigned" attribute | |
16160 | in this situation, because ordinarily we guess whether the type | |
16161 | is unsigned -- but the guess can be wrong and the underlying type | |
16162 | can tell us the reality. However, we defer to a local size | |
16163 | attribute if one exists, because this lets the compiler override | |
16164 | the underlying type if needed. */ | |
16165 | if (TYPE_TARGET_TYPE (type) != NULL && !TYPE_STUB (TYPE_TARGET_TYPE (type))) | |
16166 | { | |
16167 | TYPE_UNSIGNED (type) = TYPE_UNSIGNED (TYPE_TARGET_TYPE (type)); | |
16168 | if (TYPE_LENGTH (type) == 0) | |
16169 | TYPE_LENGTH (type) = TYPE_LENGTH (TYPE_TARGET_TYPE (type)); | |
2b4424c3 TT |
16170 | if (TYPE_RAW_ALIGN (type) == 0 |
16171 | && TYPE_RAW_ALIGN (TYPE_TARGET_TYPE (type)) != 0) | |
16172 | set_type_align (type, TYPE_RAW_ALIGN (TYPE_TARGET_TYPE (type))); | |
0626fc76 TT |
16173 | } |
16174 | ||
3d567982 TT |
16175 | TYPE_DECLARED_CLASS (type) = dwarf2_flag_true_p (die, DW_AT_enum_class, cu); |
16176 | ||
f792889a | 16177 | return set_die_type (die, type, cu); |
134d01f1 DJ |
16178 | } |
16179 | ||
16180 | /* Given a pointer to a die which begins an enumeration, process all | |
16181 | the dies that define the members of the enumeration, and create the | |
16182 | symbol for the enumeration type. | |
16183 | ||
16184 | NOTE: We reverse the order of the element list. */ | |
16185 | ||
16186 | static void | |
16187 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
16188 | { | |
f792889a | 16189 | struct type *this_type; |
134d01f1 | 16190 | |
f792889a DJ |
16191 | this_type = get_die_type (die, cu); |
16192 | if (this_type == NULL) | |
16193 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 16194 | |
639d11d3 | 16195 | if (die->child != NULL) |
c906108c | 16196 | { |
9dc481d3 DE |
16197 | struct die_info *child_die; |
16198 | struct symbol *sym; | |
16199 | struct field *fields = NULL; | |
16200 | int num_fields = 0; | |
15d034d0 | 16201 | const char *name; |
9dc481d3 | 16202 | |
639d11d3 | 16203 | child_die = die->child; |
c906108c SS |
16204 | while (child_die && child_die->tag) |
16205 | { | |
16206 | if (child_die->tag != DW_TAG_enumerator) | |
16207 | { | |
e7c27a73 | 16208 | process_die (child_die, cu); |
c906108c SS |
16209 | } |
16210 | else | |
16211 | { | |
39cbfefa DJ |
16212 | name = dwarf2_name (child_die, cu); |
16213 | if (name) | |
c906108c | 16214 | { |
f792889a | 16215 | sym = new_symbol (child_die, this_type, cu); |
c906108c SS |
16216 | |
16217 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
16218 | { | |
16219 | fields = (struct field *) | |
16220 | xrealloc (fields, | |
16221 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 16222 | * sizeof (struct field)); |
c906108c SS |
16223 | } |
16224 | ||
3567439c | 16225 | FIELD_NAME (fields[num_fields]) = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 16226 | FIELD_TYPE (fields[num_fields]) = NULL; |
14e75d8e | 16227 | SET_FIELD_ENUMVAL (fields[num_fields], SYMBOL_VALUE (sym)); |
c906108c SS |
16228 | FIELD_BITSIZE (fields[num_fields]) = 0; |
16229 | ||
16230 | num_fields++; | |
16231 | } | |
16232 | } | |
16233 | ||
16234 | child_die = sibling_die (child_die); | |
16235 | } | |
16236 | ||
16237 | if (num_fields) | |
16238 | { | |
f792889a DJ |
16239 | TYPE_NFIELDS (this_type) = num_fields; |
16240 | TYPE_FIELDS (this_type) = (struct field *) | |
16241 | TYPE_ALLOC (this_type, sizeof (struct field) * num_fields); | |
16242 | memcpy (TYPE_FIELDS (this_type), fields, | |
c906108c | 16243 | sizeof (struct field) * num_fields); |
b8c9b27d | 16244 | xfree (fields); |
c906108c | 16245 | } |
c906108c | 16246 | } |
134d01f1 | 16247 | |
6c83ed52 TT |
16248 | /* If we are reading an enum from a .debug_types unit, and the enum |
16249 | is a declaration, and the enum is not the signatured type in the | |
16250 | unit, then we do not want to add a symbol for it. Adding a | |
16251 | symbol would in some cases obscure the true definition of the | |
16252 | enum, giving users an incomplete type when the definition is | |
16253 | actually available. Note that we do not want to do this for all | |
16254 | enums which are just declarations, because C++0x allows forward | |
16255 | enum declarations. */ | |
3019eac3 | 16256 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
16257 | && die_is_declaration (die, cu)) |
16258 | { | |
52dc124a | 16259 | struct signatured_type *sig_type; |
6c83ed52 | 16260 | |
c0f78cd4 | 16261 | sig_type = (struct signatured_type *) cu->per_cu; |
9c541725 PA |
16262 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
16263 | if (sig_type->type_offset_in_section != die->sect_off) | |
6c83ed52 TT |
16264 | return; |
16265 | } | |
16266 | ||
f792889a | 16267 | new_symbol (die, this_type, cu); |
c906108c SS |
16268 | } |
16269 | ||
16270 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
16271 | the DIE's type field. For now, this only handles one dimensional | |
16272 | arrays. */ | |
16273 | ||
f792889a | 16274 | static struct type * |
e7c27a73 | 16275 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16276 | { |
518817b3 | 16277 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 16278 | struct die_info *child_die; |
7e314c57 | 16279 | struct type *type; |
c906108c | 16280 | struct type *element_type, *range_type, *index_type; |
c906108c | 16281 | struct attribute *attr; |
15d034d0 | 16282 | const char *name; |
a405673c | 16283 | struct dynamic_prop *byte_stride_prop = NULL; |
dc53a7ad | 16284 | unsigned int bit_stride = 0; |
c906108c | 16285 | |
e7c27a73 | 16286 | element_type = die_type (die, cu); |
c906108c | 16287 | |
7e314c57 JK |
16288 | /* The die_type call above may have already set the type for this DIE. */ |
16289 | type = get_die_type (die, cu); | |
16290 | if (type) | |
16291 | return type; | |
16292 | ||
dc53a7ad JB |
16293 | attr = dwarf2_attr (die, DW_AT_byte_stride, cu); |
16294 | if (attr != NULL) | |
a405673c JB |
16295 | { |
16296 | int stride_ok; | |
16297 | ||
16298 | byte_stride_prop | |
16299 | = (struct dynamic_prop *) alloca (sizeof (struct dynamic_prop)); | |
16300 | stride_ok = attr_to_dynamic_prop (attr, die, cu, byte_stride_prop); | |
16301 | if (!stride_ok) | |
16302 | { | |
b98664d3 | 16303 | complaint (_("unable to read array DW_AT_byte_stride " |
9d8780f0 SM |
16304 | " - DIE at %s [in module %s]"), |
16305 | sect_offset_str (die->sect_off), | |
518817b3 | 16306 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
a405673c JB |
16307 | /* Ignore this attribute. We will likely not be able to print |
16308 | arrays of this type correctly, but there is little we can do | |
16309 | to help if we cannot read the attribute's value. */ | |
16310 | byte_stride_prop = NULL; | |
16311 | } | |
16312 | } | |
dc53a7ad JB |
16313 | |
16314 | attr = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
16315 | if (attr != NULL) | |
16316 | bit_stride = DW_UNSND (attr); | |
16317 | ||
c906108c SS |
16318 | /* Irix 6.2 native cc creates array types without children for |
16319 | arrays with unspecified length. */ | |
639d11d3 | 16320 | if (die->child == NULL) |
c906108c | 16321 | { |
46bf5051 | 16322 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 16323 | range_type = create_static_range_type (NULL, index_type, 0, -1); |
dc53a7ad | 16324 | type = create_array_type_with_stride (NULL, element_type, range_type, |
a405673c | 16325 | byte_stride_prop, bit_stride); |
f792889a | 16326 | return set_die_type (die, type, cu); |
c906108c SS |
16327 | } |
16328 | ||
791afaa2 | 16329 | std::vector<struct type *> range_types; |
639d11d3 | 16330 | child_die = die->child; |
c906108c SS |
16331 | while (child_die && child_die->tag) |
16332 | { | |
16333 | if (child_die->tag == DW_TAG_subrange_type) | |
16334 | { | |
f792889a | 16335 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 16336 | |
f792889a | 16337 | if (child_type != NULL) |
a02abb62 | 16338 | { |
0963b4bd MS |
16339 | /* The range type was succesfully read. Save it for the |
16340 | array type creation. */ | |
791afaa2 | 16341 | range_types.push_back (child_type); |
a02abb62 | 16342 | } |
c906108c SS |
16343 | } |
16344 | child_die = sibling_die (child_die); | |
16345 | } | |
16346 | ||
16347 | /* Dwarf2 dimensions are output from left to right, create the | |
16348 | necessary array types in backwards order. */ | |
7ca2d3a3 | 16349 | |
c906108c | 16350 | type = element_type; |
7ca2d3a3 DL |
16351 | |
16352 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
16353 | { | |
16354 | int i = 0; | |
9a619af0 | 16355 | |
791afaa2 | 16356 | while (i < range_types.size ()) |
dc53a7ad | 16357 | type = create_array_type_with_stride (NULL, type, range_types[i++], |
a405673c | 16358 | byte_stride_prop, bit_stride); |
7ca2d3a3 DL |
16359 | } |
16360 | else | |
16361 | { | |
791afaa2 | 16362 | size_t ndim = range_types.size (); |
7ca2d3a3 | 16363 | while (ndim-- > 0) |
dc53a7ad | 16364 | type = create_array_type_with_stride (NULL, type, range_types[ndim], |
a405673c | 16365 | byte_stride_prop, bit_stride); |
7ca2d3a3 | 16366 | } |
c906108c | 16367 | |
f5f8a009 EZ |
16368 | /* Understand Dwarf2 support for vector types (like they occur on |
16369 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
16370 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
16371 | custom vendor extension. The main difference between a regular | |
16372 | array and the vector variant is that vectors are passed by value | |
16373 | to functions. */ | |
e142c38c | 16374 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 | 16375 | if (attr) |
ea37ba09 | 16376 | make_vector_type (type); |
f5f8a009 | 16377 | |
dbc98a8b KW |
16378 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
16379 | implementation may choose to implement triple vectors using this | |
16380 | attribute. */ | |
16381 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
16382 | if (attr) | |
16383 | { | |
16384 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
16385 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16386 | else | |
b98664d3 | 16387 | complaint (_("DW_AT_byte_size for array type smaller " |
3e43a32a | 16388 | "than the total size of elements")); |
dbc98a8b KW |
16389 | } |
16390 | ||
39cbfefa DJ |
16391 | name = dwarf2_name (die, cu); |
16392 | if (name) | |
16393 | TYPE_NAME (type) = name; | |
6e70227d | 16394 | |
2b4424c3 TT |
16395 | maybe_set_alignment (cu, die, type); |
16396 | ||
0963b4bd | 16397 | /* Install the type in the die. */ |
7e314c57 JK |
16398 | set_die_type (die, type, cu); |
16399 | ||
16400 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
16401 | set_descriptive_type (type, die, cu); |
16402 | ||
7e314c57 | 16403 | return type; |
c906108c SS |
16404 | } |
16405 | ||
7ca2d3a3 | 16406 | static enum dwarf_array_dim_ordering |
6e70227d | 16407 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
16408 | { |
16409 | struct attribute *attr; | |
16410 | ||
16411 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
16412 | ||
aead7601 SM |
16413 | if (attr) |
16414 | return (enum dwarf_array_dim_ordering) DW_SND (attr); | |
7ca2d3a3 | 16415 | |
0963b4bd MS |
16416 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
16417 | opposite order to the dwarf2 specification, but data is still | |
16418 | laid out as per normal fortran. | |
7ca2d3a3 | 16419 | |
0963b4bd MS |
16420 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
16421 | version checking. */ | |
7ca2d3a3 | 16422 | |
905e0470 PM |
16423 | if (cu->language == language_fortran |
16424 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
16425 | { |
16426 | return DW_ORD_row_major; | |
16427 | } | |
16428 | ||
6e70227d | 16429 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
16430 | { |
16431 | case array_column_major: | |
16432 | return DW_ORD_col_major; | |
16433 | case array_row_major: | |
16434 | default: | |
16435 | return DW_ORD_row_major; | |
16436 | }; | |
16437 | } | |
16438 | ||
72019c9c | 16439 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 16440 | the DIE's type field. */ |
72019c9c | 16441 | |
f792889a | 16442 | static struct type * |
72019c9c GM |
16443 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
16444 | { | |
7e314c57 JK |
16445 | struct type *domain_type, *set_type; |
16446 | struct attribute *attr; | |
f792889a | 16447 | |
7e314c57 JK |
16448 | domain_type = die_type (die, cu); |
16449 | ||
16450 | /* The die_type call above may have already set the type for this DIE. */ | |
16451 | set_type = get_die_type (die, cu); | |
16452 | if (set_type) | |
16453 | return set_type; | |
16454 | ||
16455 | set_type = create_set_type (NULL, domain_type); | |
16456 | ||
16457 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
d09039dd PM |
16458 | if (attr) |
16459 | TYPE_LENGTH (set_type) = DW_UNSND (attr); | |
7e314c57 | 16460 | |
2b4424c3 TT |
16461 | maybe_set_alignment (cu, die, set_type); |
16462 | ||
f792889a | 16463 | return set_die_type (die, set_type, cu); |
72019c9c | 16464 | } |
7ca2d3a3 | 16465 | |
0971de02 TT |
16466 | /* A helper for read_common_block that creates a locexpr baton. |
16467 | SYM is the symbol which we are marking as computed. | |
16468 | COMMON_DIE is the DIE for the common block. | |
16469 | COMMON_LOC is the location expression attribute for the common | |
16470 | block itself. | |
16471 | MEMBER_LOC is the location expression attribute for the particular | |
16472 | member of the common block that we are processing. | |
16473 | CU is the CU from which the above come. */ | |
16474 | ||
16475 | static void | |
16476 | mark_common_block_symbol_computed (struct symbol *sym, | |
16477 | struct die_info *common_die, | |
16478 | struct attribute *common_loc, | |
16479 | struct attribute *member_loc, | |
16480 | struct dwarf2_cu *cu) | |
16481 | { | |
518817b3 SM |
16482 | struct dwarf2_per_objfile *dwarf2_per_objfile |
16483 | = cu->per_cu->dwarf2_per_objfile; | |
0971de02 TT |
16484 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
16485 | struct dwarf2_locexpr_baton *baton; | |
16486 | gdb_byte *ptr; | |
16487 | unsigned int cu_off; | |
16488 | enum bfd_endian byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
16489 | LONGEST offset = 0; | |
16490 | ||
16491 | gdb_assert (common_loc && member_loc); | |
16492 | gdb_assert (attr_form_is_block (common_loc)); | |
16493 | gdb_assert (attr_form_is_block (member_loc) | |
16494 | || attr_form_is_constant (member_loc)); | |
16495 | ||
8d749320 | 16496 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
0971de02 TT |
16497 | baton->per_cu = cu->per_cu; |
16498 | gdb_assert (baton->per_cu); | |
16499 | ||
16500 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
16501 | ||
16502 | if (attr_form_is_constant (member_loc)) | |
16503 | { | |
16504 | offset = dwarf2_get_attr_constant_value (member_loc, 0); | |
16505 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; | |
16506 | } | |
16507 | else | |
16508 | baton->size += DW_BLOCK (member_loc)->size; | |
16509 | ||
224c3ddb | 16510 | ptr = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, baton->size); |
0971de02 TT |
16511 | baton->data = ptr; |
16512 | ||
16513 | *ptr++ = DW_OP_call4; | |
9c541725 | 16514 | cu_off = common_die->sect_off - cu->per_cu->sect_off; |
0971de02 TT |
16515 | store_unsigned_integer (ptr, 4, byte_order, cu_off); |
16516 | ptr += 4; | |
16517 | ||
16518 | if (attr_form_is_constant (member_loc)) | |
16519 | { | |
16520 | *ptr++ = DW_OP_addr; | |
16521 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
16522 | ptr += cu->header.addr_size; | |
16523 | } | |
16524 | else | |
16525 | { | |
16526 | /* We have to copy the data here, because DW_OP_call4 will only | |
16527 | use a DW_AT_location attribute. */ | |
16528 | memcpy (ptr, DW_BLOCK (member_loc)->data, DW_BLOCK (member_loc)->size); | |
16529 | ptr += DW_BLOCK (member_loc)->size; | |
16530 | } | |
16531 | ||
16532 | *ptr++ = DW_OP_plus; | |
16533 | gdb_assert (ptr - baton->data == baton->size); | |
16534 | ||
0971de02 | 16535 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 16536 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
0971de02 TT |
16537 | } |
16538 | ||
4357ac6c TT |
16539 | /* Create appropriate locally-scoped variables for all the |
16540 | DW_TAG_common_block entries. Also create a struct common_block | |
16541 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
16542 | is used to sepate the common blocks name namespace from regular | |
16543 | variable names. */ | |
c906108c SS |
16544 | |
16545 | static void | |
e7c27a73 | 16546 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16547 | { |
0971de02 TT |
16548 | struct attribute *attr; |
16549 | ||
16550 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
16551 | if (attr) | |
16552 | { | |
16553 | /* Support the .debug_loc offsets. */ | |
16554 | if (attr_form_is_block (attr)) | |
16555 | { | |
16556 | /* Ok. */ | |
16557 | } | |
16558 | else if (attr_form_is_section_offset (attr)) | |
16559 | { | |
16560 | dwarf2_complex_location_expr_complaint (); | |
16561 | attr = NULL; | |
16562 | } | |
16563 | else | |
16564 | { | |
16565 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
16566 | "common block member"); | |
16567 | attr = NULL; | |
16568 | } | |
16569 | } | |
16570 | ||
639d11d3 | 16571 | if (die->child != NULL) |
c906108c | 16572 | { |
518817b3 | 16573 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
4357ac6c TT |
16574 | struct die_info *child_die; |
16575 | size_t n_entries = 0, size; | |
16576 | struct common_block *common_block; | |
16577 | struct symbol *sym; | |
74ac6d43 | 16578 | |
4357ac6c TT |
16579 | for (child_die = die->child; |
16580 | child_die && child_die->tag; | |
16581 | child_die = sibling_die (child_die)) | |
16582 | ++n_entries; | |
16583 | ||
16584 | size = (sizeof (struct common_block) | |
16585 | + (n_entries - 1) * sizeof (struct symbol *)); | |
224c3ddb SM |
16586 | common_block |
16587 | = (struct common_block *) obstack_alloc (&objfile->objfile_obstack, | |
16588 | size); | |
4357ac6c TT |
16589 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); |
16590 | common_block->n_entries = 0; | |
16591 | ||
16592 | for (child_die = die->child; | |
16593 | child_die && child_die->tag; | |
16594 | child_die = sibling_die (child_die)) | |
16595 | { | |
16596 | /* Create the symbol in the DW_TAG_common_block block in the current | |
16597 | symbol scope. */ | |
e7c27a73 | 16598 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
16599 | if (sym != NULL) |
16600 | { | |
16601 | struct attribute *member_loc; | |
16602 | ||
16603 | common_block->contents[common_block->n_entries++] = sym; | |
16604 | ||
16605 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
16606 | cu); | |
16607 | if (member_loc) | |
16608 | { | |
16609 | /* GDB has handled this for a long time, but it is | |
16610 | not specified by DWARF. It seems to have been | |
16611 | emitted by gfortran at least as recently as: | |
16612 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
b98664d3 | 16613 | complaint (_("Variable in common block has " |
0971de02 | 16614 | "DW_AT_data_member_location " |
9d8780f0 SM |
16615 | "- DIE at %s [in module %s]"), |
16616 | sect_offset_str (child_die->sect_off), | |
518817b3 | 16617 | objfile_name (objfile)); |
0971de02 TT |
16618 | |
16619 | if (attr_form_is_section_offset (member_loc)) | |
16620 | dwarf2_complex_location_expr_complaint (); | |
16621 | else if (attr_form_is_constant (member_loc) | |
16622 | || attr_form_is_block (member_loc)) | |
16623 | { | |
16624 | if (attr) | |
16625 | mark_common_block_symbol_computed (sym, die, attr, | |
16626 | member_loc, cu); | |
16627 | } | |
16628 | else | |
16629 | dwarf2_complex_location_expr_complaint (); | |
16630 | } | |
16631 | } | |
c906108c | 16632 | } |
4357ac6c TT |
16633 | |
16634 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
16635 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
16636 | } |
16637 | } | |
16638 | ||
0114d602 | 16639 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 16640 | |
0114d602 DJ |
16641 | static struct type * |
16642 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 16643 | { |
518817b3 | 16644 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 16645 | const char *previous_prefix, *name; |
9219021c | 16646 | int is_anonymous; |
0114d602 DJ |
16647 | struct type *type; |
16648 | ||
16649 | /* For extensions, reuse the type of the original namespace. */ | |
16650 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
16651 | { | |
16652 | struct die_info *ext_die; | |
16653 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 16654 | |
0114d602 DJ |
16655 | ext_die = dwarf2_extension (die, &ext_cu); |
16656 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
16657 | |
16658 | /* EXT_CU may not be the same as CU. | |
02142a6c | 16659 | Ensure TYPE is recorded with CU in die_type_hash. */ |
0114d602 DJ |
16660 | return set_die_type (die, type, cu); |
16661 | } | |
9219021c | 16662 | |
e142c38c | 16663 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
16664 | |
16665 | /* Now build the name of the current namespace. */ | |
16666 | ||
0114d602 DJ |
16667 | previous_prefix = determine_prefix (die, cu); |
16668 | if (previous_prefix[0] != '\0') | |
16669 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 16670 | previous_prefix, name, 0, cu); |
0114d602 DJ |
16671 | |
16672 | /* Create the type. */ | |
19f392bc | 16673 | type = init_type (objfile, TYPE_CODE_NAMESPACE, 0, name); |
0114d602 | 16674 | |
60531b24 | 16675 | return set_die_type (die, type, cu); |
0114d602 DJ |
16676 | } |
16677 | ||
22cee43f | 16678 | /* Read a namespace scope. */ |
0114d602 DJ |
16679 | |
16680 | static void | |
16681 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
16682 | { | |
518817b3 | 16683 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 16684 | int is_anonymous; |
9219021c | 16685 | |
5c4e30ca DC |
16686 | /* Add a symbol associated to this if we haven't seen the namespace |
16687 | before. Also, add a using directive if it's an anonymous | |
16688 | namespace. */ | |
9219021c | 16689 | |
f2f0e013 | 16690 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
16691 | { |
16692 | struct type *type; | |
16693 | ||
0114d602 | 16694 | type = read_type_die (die, cu); |
e7c27a73 | 16695 | new_symbol (die, type, cu); |
5c4e30ca | 16696 | |
e8e80198 | 16697 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 16698 | if (is_anonymous) |
0114d602 DJ |
16699 | { |
16700 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 16701 | |
eb1e02fd | 16702 | std::vector<const char *> excludes; |
22cee43f PMR |
16703 | add_using_directive (using_directives (cu->language), |
16704 | previous_prefix, TYPE_NAME (type), NULL, | |
eb1e02fd | 16705 | NULL, excludes, 0, &objfile->objfile_obstack); |
0114d602 | 16706 | } |
5c4e30ca | 16707 | } |
9219021c | 16708 | |
639d11d3 | 16709 | if (die->child != NULL) |
d9fa45fe | 16710 | { |
639d11d3 | 16711 | struct die_info *child_die = die->child; |
6e70227d | 16712 | |
d9fa45fe DC |
16713 | while (child_die && child_die->tag) |
16714 | { | |
e7c27a73 | 16715 | process_die (child_die, cu); |
d9fa45fe DC |
16716 | child_die = sibling_die (child_die); |
16717 | } | |
16718 | } | |
38d518c9 EZ |
16719 | } |
16720 | ||
f55ee35c JK |
16721 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
16722 | imported module. Still we need that type as local Fortran "use ... only" | |
16723 | declaration imports depend on the created type in determine_prefix. */ | |
16724 | ||
16725 | static struct type * | |
16726 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
16727 | { | |
518817b3 | 16728 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
15d034d0 | 16729 | const char *module_name; |
f55ee35c JK |
16730 | struct type *type; |
16731 | ||
16732 | module_name = dwarf2_name (die, cu); | |
16733 | if (!module_name) | |
b98664d3 | 16734 | complaint (_("DW_TAG_module has no name, offset %s"), |
9d8780f0 | 16735 | sect_offset_str (die->sect_off)); |
19f392bc | 16736 | type = init_type (objfile, TYPE_CODE_MODULE, 0, module_name); |
f55ee35c | 16737 | |
f55ee35c JK |
16738 | return set_die_type (die, type, cu); |
16739 | } | |
16740 | ||
5d7cb8df JK |
16741 | /* Read a Fortran module. */ |
16742 | ||
16743 | static void | |
16744 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
16745 | { | |
16746 | struct die_info *child_die = die->child; | |
530e8392 KB |
16747 | struct type *type; |
16748 | ||
16749 | type = read_type_die (die, cu); | |
16750 | new_symbol (die, type, cu); | |
5d7cb8df | 16751 | |
5d7cb8df JK |
16752 | while (child_die && child_die->tag) |
16753 | { | |
16754 | process_die (child_die, cu); | |
16755 | child_die = sibling_die (child_die); | |
16756 | } | |
16757 | } | |
16758 | ||
38d518c9 EZ |
16759 | /* Return the name of the namespace represented by DIE. Set |
16760 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
16761 | namespace. */ | |
16762 | ||
16763 | static const char * | |
e142c38c | 16764 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
16765 | { |
16766 | struct die_info *current_die; | |
16767 | const char *name = NULL; | |
16768 | ||
16769 | /* Loop through the extensions until we find a name. */ | |
16770 | ||
16771 | for (current_die = die; | |
16772 | current_die != NULL; | |
f2f0e013 | 16773 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 16774 | { |
96553a0c DE |
16775 | /* We don't use dwarf2_name here so that we can detect the absence |
16776 | of a name -> anonymous namespace. */ | |
7d45c7c3 | 16777 | name = dwarf2_string_attr (die, DW_AT_name, cu); |
96553a0c | 16778 | |
38d518c9 EZ |
16779 | if (name != NULL) |
16780 | break; | |
16781 | } | |
16782 | ||
16783 | /* Is it an anonymous namespace? */ | |
16784 | ||
16785 | *is_anonymous = (name == NULL); | |
16786 | if (*is_anonymous) | |
2b1dbab0 | 16787 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
16788 | |
16789 | return name; | |
d9fa45fe DC |
16790 | } |
16791 | ||
c906108c SS |
16792 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
16793 | the user defined type vector. */ | |
16794 | ||
f792889a | 16795 | static struct type * |
e7c27a73 | 16796 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16797 | { |
518817b3 SM |
16798 | struct gdbarch *gdbarch |
16799 | = get_objfile_arch (cu->per_cu->dwarf2_per_objfile->objfile); | |
e7c27a73 | 16800 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 16801 | struct type *type; |
8b2dbe47 KB |
16802 | struct attribute *attr_byte_size; |
16803 | struct attribute *attr_address_class; | |
16804 | int byte_size, addr_class; | |
7e314c57 JK |
16805 | struct type *target_type; |
16806 | ||
16807 | target_type = die_type (die, cu); | |
c906108c | 16808 | |
7e314c57 JK |
16809 | /* The die_type call above may have already set the type for this DIE. */ |
16810 | type = get_die_type (die, cu); | |
16811 | if (type) | |
16812 | return type; | |
16813 | ||
16814 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 16815 | |
e142c38c | 16816 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
16817 | if (attr_byte_size) |
16818 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 16819 | else |
8b2dbe47 KB |
16820 | byte_size = cu_header->addr_size; |
16821 | ||
e142c38c | 16822 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
16823 | if (attr_address_class) |
16824 | addr_class = DW_UNSND (attr_address_class); | |
16825 | else | |
16826 | addr_class = DW_ADDR_none; | |
16827 | ||
2b4424c3 TT |
16828 | ULONGEST alignment = get_alignment (cu, die); |
16829 | ||
16830 | /* If the pointer size, alignment, or address class is different | |
16831 | than the default, create a type variant marked as such and set | |
16832 | the length accordingly. */ | |
16833 | if (TYPE_LENGTH (type) != byte_size | |
16834 | || (alignment != 0 && TYPE_RAW_ALIGN (type) != 0 | |
16835 | && alignment != TYPE_RAW_ALIGN (type)) | |
16836 | || addr_class != DW_ADDR_none) | |
c906108c | 16837 | { |
5e2b427d | 16838 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
16839 | { |
16840 | int type_flags; | |
16841 | ||
849957d9 | 16842 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 16843 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
16844 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
16845 | == 0); | |
8b2dbe47 KB |
16846 | type = make_type_with_address_space (type, type_flags); |
16847 | } | |
16848 | else if (TYPE_LENGTH (type) != byte_size) | |
16849 | { | |
b98664d3 | 16850 | complaint (_("invalid pointer size %d"), byte_size); |
8b2dbe47 | 16851 | } |
2b4424c3 TT |
16852 | else if (TYPE_RAW_ALIGN (type) != alignment) |
16853 | { | |
b98664d3 | 16854 | complaint (_("Invalid DW_AT_alignment" |
2b4424c3 TT |
16855 | " - DIE at %s [in module %s]"), |
16856 | sect_offset_str (die->sect_off), | |
16857 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
16858 | } | |
6e70227d | 16859 | else |
9a619af0 MS |
16860 | { |
16861 | /* Should we also complain about unhandled address classes? */ | |
16862 | } | |
c906108c | 16863 | } |
8b2dbe47 KB |
16864 | |
16865 | TYPE_LENGTH (type) = byte_size; | |
2b4424c3 | 16866 | set_type_align (type, alignment); |
f792889a | 16867 | return set_die_type (die, type, cu); |
c906108c SS |
16868 | } |
16869 | ||
16870 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
16871 | the user defined type vector. */ | |
16872 | ||
f792889a | 16873 | static struct type * |
e7c27a73 | 16874 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
16875 | { |
16876 | struct type *type; | |
16877 | struct type *to_type; | |
16878 | struct type *domain; | |
16879 | ||
e7c27a73 DJ |
16880 | to_type = die_type (die, cu); |
16881 | domain = die_containing_type (die, cu); | |
0d5de010 | 16882 | |
7e314c57 JK |
16883 | /* The calls above may have already set the type for this DIE. */ |
16884 | type = get_die_type (die, cu); | |
16885 | if (type) | |
16886 | return type; | |
16887 | ||
0d5de010 DJ |
16888 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) |
16889 | type = lookup_methodptr_type (to_type); | |
7078baeb TT |
16890 | else if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_FUNC) |
16891 | { | |
518817b3 SM |
16892 | struct type *new_type |
16893 | = alloc_type (cu->per_cu->dwarf2_per_objfile->objfile); | |
7078baeb TT |
16894 | |
16895 | smash_to_method_type (new_type, domain, TYPE_TARGET_TYPE (to_type), | |
16896 | TYPE_FIELDS (to_type), TYPE_NFIELDS (to_type), | |
16897 | TYPE_VARARGS (to_type)); | |
16898 | type = lookup_methodptr_type (new_type); | |
16899 | } | |
0d5de010 DJ |
16900 | else |
16901 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 16902 | |
f792889a | 16903 | return set_die_type (die, type, cu); |
c906108c SS |
16904 | } |
16905 | ||
4297a3f0 | 16906 | /* Extract all information from a DW_TAG_{rvalue_,}reference_type DIE and add to |
c906108c SS |
16907 | the user defined type vector. */ |
16908 | ||
f792889a | 16909 | static struct type * |
4297a3f0 AV |
16910 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu, |
16911 | enum type_code refcode) | |
c906108c | 16912 | { |
e7c27a73 | 16913 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 16914 | struct type *type, *target_type; |
c906108c SS |
16915 | struct attribute *attr; |
16916 | ||
4297a3f0 AV |
16917 | gdb_assert (refcode == TYPE_CODE_REF || refcode == TYPE_CODE_RVALUE_REF); |
16918 | ||
7e314c57 JK |
16919 | target_type = die_type (die, cu); |
16920 | ||
16921 | /* The die_type call above may have already set the type for this DIE. */ | |
16922 | type = get_die_type (die, cu); | |
16923 | if (type) | |
16924 | return type; | |
16925 | ||
4297a3f0 | 16926 | type = lookup_reference_type (target_type, refcode); |
e142c38c | 16927 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
16928 | if (attr) |
16929 | { | |
16930 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16931 | } | |
16932 | else | |
16933 | { | |
107d2387 | 16934 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 16935 | } |
2b4424c3 | 16936 | maybe_set_alignment (cu, die, type); |
f792889a | 16937 | return set_die_type (die, type, cu); |
c906108c SS |
16938 | } |
16939 | ||
cf363f18 MW |
16940 | /* Add the given cv-qualifiers to the element type of the array. GCC |
16941 | outputs DWARF type qualifiers that apply to an array, not the | |
16942 | element type. But GDB relies on the array element type to carry | |
16943 | the cv-qualifiers. This mimics section 6.7.3 of the C99 | |
16944 | specification. */ | |
16945 | ||
16946 | static struct type * | |
16947 | add_array_cv_type (struct die_info *die, struct dwarf2_cu *cu, | |
16948 | struct type *base_type, int cnst, int voltl) | |
16949 | { | |
16950 | struct type *el_type, *inner_array; | |
16951 | ||
16952 | base_type = copy_type (base_type); | |
16953 | inner_array = base_type; | |
16954 | ||
16955 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) | |
16956 | { | |
16957 | TYPE_TARGET_TYPE (inner_array) = | |
16958 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
16959 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
16960 | } | |
16961 | ||
16962 | el_type = TYPE_TARGET_TYPE (inner_array); | |
16963 | cnst |= TYPE_CONST (el_type); | |
16964 | voltl |= TYPE_VOLATILE (el_type); | |
16965 | TYPE_TARGET_TYPE (inner_array) = make_cv_type (cnst, voltl, el_type, NULL); | |
16966 | ||
16967 | return set_die_type (die, base_type, cu); | |
16968 | } | |
16969 | ||
f792889a | 16970 | static struct type * |
e7c27a73 | 16971 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16972 | { |
f792889a | 16973 | struct type *base_type, *cv_type; |
c906108c | 16974 | |
e7c27a73 | 16975 | base_type = die_type (die, cu); |
7e314c57 JK |
16976 | |
16977 | /* The die_type call above may have already set the type for this DIE. */ | |
16978 | cv_type = get_die_type (die, cu); | |
16979 | if (cv_type) | |
16980 | return cv_type; | |
16981 | ||
2f608a3a KW |
16982 | /* In case the const qualifier is applied to an array type, the element type |
16983 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
16984 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
cf363f18 | 16985 | return add_array_cv_type (die, cu, base_type, 1, 0); |
2f608a3a | 16986 | |
f792889a DJ |
16987 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
16988 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
16989 | } |
16990 | ||
f792889a | 16991 | static struct type * |
e7c27a73 | 16992 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16993 | { |
f792889a | 16994 | struct type *base_type, *cv_type; |
c906108c | 16995 | |
e7c27a73 | 16996 | base_type = die_type (die, cu); |
7e314c57 JK |
16997 | |
16998 | /* The die_type call above may have already set the type for this DIE. */ | |
16999 | cv_type = get_die_type (die, cu); | |
17000 | if (cv_type) | |
17001 | return cv_type; | |
17002 | ||
cf363f18 MW |
17003 | /* In case the volatile qualifier is applied to an array type, the |
17004 | element type is so qualified, not the array type (section 6.7.3 | |
17005 | of C99). */ | |
17006 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
17007 | return add_array_cv_type (die, cu, base_type, 0, 1); | |
17008 | ||
f792889a DJ |
17009 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
17010 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
17011 | } |
17012 | ||
06d66ee9 TT |
17013 | /* Handle DW_TAG_restrict_type. */ |
17014 | ||
17015 | static struct type * | |
17016 | read_tag_restrict_type (struct die_info *die, struct dwarf2_cu *cu) | |
17017 | { | |
17018 | struct type *base_type, *cv_type; | |
17019 | ||
17020 | base_type = die_type (die, cu); | |
17021 | ||
17022 | /* The die_type call above may have already set the type for this DIE. */ | |
17023 | cv_type = get_die_type (die, cu); | |
17024 | if (cv_type) | |
17025 | return cv_type; | |
17026 | ||
17027 | cv_type = make_restrict_type (base_type); | |
17028 | return set_die_type (die, cv_type, cu); | |
17029 | } | |
17030 | ||
a2c2acaf MW |
17031 | /* Handle DW_TAG_atomic_type. */ |
17032 | ||
17033 | static struct type * | |
17034 | read_tag_atomic_type (struct die_info *die, struct dwarf2_cu *cu) | |
17035 | { | |
17036 | struct type *base_type, *cv_type; | |
17037 | ||
17038 | base_type = die_type (die, cu); | |
17039 | ||
17040 | /* The die_type call above may have already set the type for this DIE. */ | |
17041 | cv_type = get_die_type (die, cu); | |
17042 | if (cv_type) | |
17043 | return cv_type; | |
17044 | ||
17045 | cv_type = make_atomic_type (base_type); | |
17046 | return set_die_type (die, cv_type, cu); | |
17047 | } | |
17048 | ||
c906108c SS |
17049 | /* Extract all information from a DW_TAG_string_type DIE and add to |
17050 | the user defined type vector. It isn't really a user defined type, | |
17051 | but it behaves like one, with other DIE's using an AT_user_def_type | |
17052 | attribute to reference it. */ | |
17053 | ||
f792889a | 17054 | static struct type * |
e7c27a73 | 17055 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17056 | { |
518817b3 | 17057 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3b7538c0 | 17058 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
17059 | struct type *type, *range_type, *index_type, *char_type; |
17060 | struct attribute *attr; | |
17061 | unsigned int length; | |
17062 | ||
e142c38c | 17063 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
17064 | if (attr) |
17065 | { | |
17066 | length = DW_UNSND (attr); | |
17067 | } | |
17068 | else | |
17069 | { | |
0963b4bd | 17070 | /* Check for the DW_AT_byte_size attribute. */ |
e142c38c | 17071 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
17072 | if (attr) |
17073 | { | |
17074 | length = DW_UNSND (attr); | |
17075 | } | |
17076 | else | |
17077 | { | |
17078 | length = 1; | |
17079 | } | |
c906108c | 17080 | } |
6ccb9162 | 17081 | |
46bf5051 | 17082 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 17083 | range_type = create_static_range_type (NULL, index_type, 1, length); |
3b7538c0 UW |
17084 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
17085 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 17086 | |
f792889a | 17087 | return set_die_type (die, type, cu); |
c906108c SS |
17088 | } |
17089 | ||
4d804846 JB |
17090 | /* Assuming that DIE corresponds to a function, returns nonzero |
17091 | if the function is prototyped. */ | |
17092 | ||
17093 | static int | |
17094 | prototyped_function_p (struct die_info *die, struct dwarf2_cu *cu) | |
17095 | { | |
17096 | struct attribute *attr; | |
17097 | ||
17098 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); | |
17099 | if (attr && (DW_UNSND (attr) != 0)) | |
17100 | return 1; | |
17101 | ||
17102 | /* The DWARF standard implies that the DW_AT_prototyped attribute | |
17103 | is only meaninful for C, but the concept also extends to other | |
17104 | languages that allow unprototyped functions (Eg: Objective C). | |
17105 | For all other languages, assume that functions are always | |
17106 | prototyped. */ | |
17107 | if (cu->language != language_c | |
17108 | && cu->language != language_objc | |
17109 | && cu->language != language_opencl) | |
17110 | return 1; | |
17111 | ||
17112 | /* RealView does not emit DW_AT_prototyped. We can not distinguish | |
17113 | prototyped and unprototyped functions; default to prototyped, | |
17114 | since that is more common in modern code (and RealView warns | |
17115 | about unprototyped functions). */ | |
17116 | if (producer_is_realview (cu->producer)) | |
17117 | return 1; | |
17118 | ||
17119 | return 0; | |
17120 | } | |
17121 | ||
c906108c SS |
17122 | /* Handle DIES due to C code like: |
17123 | ||
17124 | struct foo | |
c5aa993b JM |
17125 | { |
17126 | int (*funcp)(int a, long l); | |
17127 | int b; | |
17128 | }; | |
c906108c | 17129 | |
0963b4bd | 17130 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 17131 | |
f792889a | 17132 | static struct type * |
e7c27a73 | 17133 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17134 | { |
518817b3 | 17135 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0963b4bd MS |
17136 | struct type *type; /* Type that this function returns. */ |
17137 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
17138 | struct attribute *attr; |
17139 | ||
e7c27a73 | 17140 | type = die_type (die, cu); |
7e314c57 JK |
17141 | |
17142 | /* The die_type call above may have already set the type for this DIE. */ | |
17143 | ftype = get_die_type (die, cu); | |
17144 | if (ftype) | |
17145 | return ftype; | |
17146 | ||
0c8b41f1 | 17147 | ftype = lookup_function_type (type); |
c906108c | 17148 | |
4d804846 | 17149 | if (prototyped_function_p (die, cu)) |
a6c727b2 | 17150 | TYPE_PROTOTYPED (ftype) = 1; |
c906108c | 17151 | |
c055b101 CV |
17152 | /* Store the calling convention in the type if it's available in |
17153 | the subroutine die. Otherwise set the calling convention to | |
17154 | the default value DW_CC_normal. */ | |
17155 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
54fcddd0 UW |
17156 | if (attr) |
17157 | TYPE_CALLING_CONVENTION (ftype) = DW_UNSND (attr); | |
17158 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) | |
17159 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
17160 | else | |
17161 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 | 17162 | |
743649fd MW |
17163 | /* Record whether the function returns normally to its caller or not |
17164 | if the DWARF producer set that information. */ | |
17165 | attr = dwarf2_attr (die, DW_AT_noreturn, cu); | |
17166 | if (attr && (DW_UNSND (attr) != 0)) | |
17167 | TYPE_NO_RETURN (ftype) = 1; | |
17168 | ||
76c10ea2 GM |
17169 | /* We need to add the subroutine type to the die immediately so |
17170 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 17171 | declared as the same subroutine type. */ |
76c10ea2 | 17172 | set_die_type (die, ftype, cu); |
6e70227d | 17173 | |
639d11d3 | 17174 | if (die->child != NULL) |
c906108c | 17175 | { |
bb5ed363 | 17176 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 17177 | struct die_info *child_die; |
8072405b | 17178 | int nparams, iparams; |
c906108c SS |
17179 | |
17180 | /* Count the number of parameters. | |
17181 | FIXME: GDB currently ignores vararg functions, but knows about | |
17182 | vararg member functions. */ | |
8072405b | 17183 | nparams = 0; |
639d11d3 | 17184 | child_die = die->child; |
c906108c SS |
17185 | while (child_die && child_die->tag) |
17186 | { | |
17187 | if (child_die->tag == DW_TAG_formal_parameter) | |
17188 | nparams++; | |
17189 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 17190 | TYPE_VARARGS (ftype) = 1; |
c906108c SS |
17191 | child_die = sibling_die (child_die); |
17192 | } | |
17193 | ||
17194 | /* Allocate storage for parameters and fill them in. */ | |
17195 | TYPE_NFIELDS (ftype) = nparams; | |
17196 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 17197 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 17198 | |
8072405b JK |
17199 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
17200 | even if we error out during the parameters reading below. */ | |
17201 | for (iparams = 0; iparams < nparams; iparams++) | |
17202 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
17203 | ||
17204 | iparams = 0; | |
639d11d3 | 17205 | child_die = die->child; |
c906108c SS |
17206 | while (child_die && child_die->tag) |
17207 | { | |
17208 | if (child_die->tag == DW_TAG_formal_parameter) | |
17209 | { | |
3ce3b1ba PA |
17210 | struct type *arg_type; |
17211 | ||
17212 | /* DWARF version 2 has no clean way to discern C++ | |
17213 | static and non-static member functions. G++ helps | |
17214 | GDB by marking the first parameter for non-static | |
17215 | member functions (which is the this pointer) as | |
17216 | artificial. We pass this information to | |
17217 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
17218 | ||
17219 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
17220 | 4.5 does not yet generate. */ | |
e142c38c | 17221 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
17222 | if (attr) |
17223 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
17224 | else | |
9c37b5ae | 17225 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
3ce3b1ba PA |
17226 | arg_type = die_type (child_die, cu); |
17227 | ||
17228 | /* RealView does not mark THIS as const, which the testsuite | |
17229 | expects. GCC marks THIS as const in method definitions, | |
17230 | but not in the class specifications (GCC PR 43053). */ | |
17231 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
17232 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
17233 | { | |
17234 | int is_this = 0; | |
17235 | struct dwarf2_cu *arg_cu = cu; | |
17236 | const char *name = dwarf2_name (child_die, cu); | |
17237 | ||
17238 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
17239 | if (attr) | |
17240 | { | |
17241 | /* If the compiler emits this, use it. */ | |
17242 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
17243 | is_this = 1; | |
17244 | } | |
17245 | else if (name && strcmp (name, "this") == 0) | |
17246 | /* Function definitions will have the argument names. */ | |
17247 | is_this = 1; | |
17248 | else if (name == NULL && iparams == 0) | |
17249 | /* Declarations may not have the names, so like | |
17250 | elsewhere in GDB, assume an artificial first | |
17251 | argument is "this". */ | |
17252 | is_this = 1; | |
17253 | ||
17254 | if (is_this) | |
17255 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
17256 | arg_type, 0); | |
17257 | } | |
17258 | ||
17259 | TYPE_FIELD_TYPE (ftype, iparams) = arg_type; | |
c906108c SS |
17260 | iparams++; |
17261 | } | |
17262 | child_die = sibling_die (child_die); | |
17263 | } | |
17264 | } | |
17265 | ||
76c10ea2 | 17266 | return ftype; |
c906108c SS |
17267 | } |
17268 | ||
f792889a | 17269 | static struct type * |
e7c27a73 | 17270 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17271 | { |
518817b3 | 17272 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 17273 | const char *name = NULL; |
3c8e0968 | 17274 | struct type *this_type, *target_type; |
c906108c | 17275 | |
94af9270 | 17276 | name = dwarf2_full_name (NULL, die, cu); |
19f392bc UW |
17277 | this_type = init_type (objfile, TYPE_CODE_TYPEDEF, 0, name); |
17278 | TYPE_TARGET_STUB (this_type) = 1; | |
f792889a | 17279 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
17280 | target_type = die_type (die, cu); |
17281 | if (target_type != this_type) | |
17282 | TYPE_TARGET_TYPE (this_type) = target_type; | |
17283 | else | |
17284 | { | |
17285 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
17286 | spec and cause infinite loops in GDB. */ | |
b98664d3 | 17287 | complaint (_("Self-referential DW_TAG_typedef " |
9d8780f0 SM |
17288 | "- DIE at %s [in module %s]"), |
17289 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
3c8e0968 DE |
17290 | TYPE_TARGET_TYPE (this_type) = NULL; |
17291 | } | |
f792889a | 17292 | return this_type; |
c906108c SS |
17293 | } |
17294 | ||
9b790ce7 UW |
17295 | /* Allocate a floating-point type of size BITS and name NAME. Pass NAME_HINT |
17296 | (which may be different from NAME) to the architecture back-end to allow | |
17297 | it to guess the correct format if necessary. */ | |
17298 | ||
17299 | static struct type * | |
17300 | dwarf2_init_float_type (struct objfile *objfile, int bits, const char *name, | |
17301 | const char *name_hint) | |
17302 | { | |
17303 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
17304 | const struct floatformat **format; | |
17305 | struct type *type; | |
17306 | ||
17307 | format = gdbarch_floatformat_for_type (gdbarch, name_hint, bits); | |
17308 | if (format) | |
17309 | type = init_float_type (objfile, bits, name, format); | |
17310 | else | |
77b7c781 | 17311 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
9b790ce7 UW |
17312 | |
17313 | return type; | |
17314 | } | |
17315 | ||
c906108c SS |
17316 | /* Find a representation of a given base type and install |
17317 | it in the TYPE field of the die. */ | |
17318 | ||
f792889a | 17319 | static struct type * |
e7c27a73 | 17320 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17321 | { |
518817b3 | 17322 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c SS |
17323 | struct type *type; |
17324 | struct attribute *attr; | |
19f392bc | 17325 | int encoding = 0, bits = 0; |
15d034d0 | 17326 | const char *name; |
c906108c | 17327 | |
e142c38c | 17328 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
17329 | if (attr) |
17330 | { | |
17331 | encoding = DW_UNSND (attr); | |
17332 | } | |
e142c38c | 17333 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
17334 | if (attr) |
17335 | { | |
19f392bc | 17336 | bits = DW_UNSND (attr) * TARGET_CHAR_BIT; |
c906108c | 17337 | } |
39cbfefa | 17338 | name = dwarf2_name (die, cu); |
6ccb9162 | 17339 | if (!name) |
c906108c | 17340 | { |
b98664d3 | 17341 | complaint (_("DW_AT_name missing from DW_TAG_base_type")); |
c906108c | 17342 | } |
6ccb9162 UW |
17343 | |
17344 | switch (encoding) | |
c906108c | 17345 | { |
6ccb9162 UW |
17346 | case DW_ATE_address: |
17347 | /* Turn DW_ATE_address into a void * pointer. */ | |
77b7c781 | 17348 | type = init_type (objfile, TYPE_CODE_VOID, TARGET_CHAR_BIT, NULL); |
19f392bc | 17349 | type = init_pointer_type (objfile, bits, name, type); |
6ccb9162 UW |
17350 | break; |
17351 | case DW_ATE_boolean: | |
19f392bc | 17352 | type = init_boolean_type (objfile, bits, 1, name); |
6ccb9162 UW |
17353 | break; |
17354 | case DW_ATE_complex_float: | |
9b790ce7 | 17355 | type = dwarf2_init_float_type (objfile, bits / 2, NULL, name); |
19f392bc | 17356 | type = init_complex_type (objfile, name, type); |
6ccb9162 UW |
17357 | break; |
17358 | case DW_ATE_decimal_float: | |
19f392bc | 17359 | type = init_decfloat_type (objfile, bits, name); |
6ccb9162 UW |
17360 | break; |
17361 | case DW_ATE_float: | |
9b790ce7 | 17362 | type = dwarf2_init_float_type (objfile, bits, name, name); |
6ccb9162 UW |
17363 | break; |
17364 | case DW_ATE_signed: | |
19f392bc | 17365 | type = init_integer_type (objfile, bits, 0, name); |
6ccb9162 UW |
17366 | break; |
17367 | case DW_ATE_unsigned: | |
3b2b8fea TT |
17368 | if (cu->language == language_fortran |
17369 | && name | |
61012eef | 17370 | && startswith (name, "character(")) |
19f392bc UW |
17371 | type = init_character_type (objfile, bits, 1, name); |
17372 | else | |
17373 | type = init_integer_type (objfile, bits, 1, name); | |
6ccb9162 UW |
17374 | break; |
17375 | case DW_ATE_signed_char: | |
6e70227d | 17376 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
17377 | || cu->language == language_pascal |
17378 | || cu->language == language_fortran) | |
19f392bc UW |
17379 | type = init_character_type (objfile, bits, 0, name); |
17380 | else | |
17381 | type = init_integer_type (objfile, bits, 0, name); | |
6ccb9162 UW |
17382 | break; |
17383 | case DW_ATE_unsigned_char: | |
868a0084 | 17384 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea | 17385 | || cu->language == language_pascal |
c44af4eb TT |
17386 | || cu->language == language_fortran |
17387 | || cu->language == language_rust) | |
19f392bc UW |
17388 | type = init_character_type (objfile, bits, 1, name); |
17389 | else | |
17390 | type = init_integer_type (objfile, bits, 1, name); | |
6ccb9162 | 17391 | break; |
75079b2b | 17392 | case DW_ATE_UTF: |
53e710ac PA |
17393 | { |
17394 | gdbarch *arch = get_objfile_arch (objfile); | |
17395 | ||
17396 | if (bits == 16) | |
17397 | type = builtin_type (arch)->builtin_char16; | |
17398 | else if (bits == 32) | |
17399 | type = builtin_type (arch)->builtin_char32; | |
17400 | else | |
17401 | { | |
b98664d3 | 17402 | complaint (_("unsupported DW_ATE_UTF bit size: '%d'"), |
53e710ac PA |
17403 | bits); |
17404 | type = init_integer_type (objfile, bits, 1, name); | |
17405 | } | |
17406 | return set_die_type (die, type, cu); | |
17407 | } | |
75079b2b TT |
17408 | break; |
17409 | ||
6ccb9162 | 17410 | default: |
b98664d3 | 17411 | complaint (_("unsupported DW_AT_encoding: '%s'"), |
6ccb9162 | 17412 | dwarf_type_encoding_name (encoding)); |
77b7c781 | 17413 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
6ccb9162 | 17414 | break; |
c906108c | 17415 | } |
6ccb9162 | 17416 | |
0114d602 | 17417 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 17418 | TYPE_NOSIGN (type) = 1; |
0114d602 | 17419 | |
2b4424c3 TT |
17420 | maybe_set_alignment (cu, die, type); |
17421 | ||
f792889a | 17422 | return set_die_type (die, type, cu); |
c906108c SS |
17423 | } |
17424 | ||
80180f79 SA |
17425 | /* Parse dwarf attribute if it's a block, reference or constant and put the |
17426 | resulting value of the attribute into struct bound_prop. | |
17427 | Returns 1 if ATTR could be resolved into PROP, 0 otherwise. */ | |
17428 | ||
17429 | static int | |
17430 | attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die, | |
17431 | struct dwarf2_cu *cu, struct dynamic_prop *prop) | |
17432 | { | |
17433 | struct dwarf2_property_baton *baton; | |
518817b3 SM |
17434 | struct obstack *obstack |
17435 | = &cu->per_cu->dwarf2_per_objfile->objfile->objfile_obstack; | |
80180f79 SA |
17436 | |
17437 | if (attr == NULL || prop == NULL) | |
17438 | return 0; | |
17439 | ||
17440 | if (attr_form_is_block (attr)) | |
17441 | { | |
8d749320 | 17442 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
80180f79 SA |
17443 | baton->referenced_type = NULL; |
17444 | baton->locexpr.per_cu = cu->per_cu; | |
17445 | baton->locexpr.size = DW_BLOCK (attr)->size; | |
17446 | baton->locexpr.data = DW_BLOCK (attr)->data; | |
17447 | prop->data.baton = baton; | |
17448 | prop->kind = PROP_LOCEXPR; | |
17449 | gdb_assert (prop->data.baton != NULL); | |
17450 | } | |
17451 | else if (attr_form_is_ref (attr)) | |
17452 | { | |
17453 | struct dwarf2_cu *target_cu = cu; | |
17454 | struct die_info *target_die; | |
17455 | struct attribute *target_attr; | |
17456 | ||
17457 | target_die = follow_die_ref (die, attr, &target_cu); | |
17458 | target_attr = dwarf2_attr (target_die, DW_AT_location, target_cu); | |
df25ebbd JB |
17459 | if (target_attr == NULL) |
17460 | target_attr = dwarf2_attr (target_die, DW_AT_data_member_location, | |
17461 | target_cu); | |
80180f79 SA |
17462 | if (target_attr == NULL) |
17463 | return 0; | |
17464 | ||
df25ebbd | 17465 | switch (target_attr->name) |
80180f79 | 17466 | { |
df25ebbd JB |
17467 | case DW_AT_location: |
17468 | if (attr_form_is_section_offset (target_attr)) | |
17469 | { | |
8d749320 | 17470 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
df25ebbd JB |
17471 | baton->referenced_type = die_type (target_die, target_cu); |
17472 | fill_in_loclist_baton (cu, &baton->loclist, target_attr); | |
17473 | prop->data.baton = baton; | |
17474 | prop->kind = PROP_LOCLIST; | |
17475 | gdb_assert (prop->data.baton != NULL); | |
17476 | } | |
17477 | else if (attr_form_is_block (target_attr)) | |
17478 | { | |
8d749320 | 17479 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
df25ebbd JB |
17480 | baton->referenced_type = die_type (target_die, target_cu); |
17481 | baton->locexpr.per_cu = cu->per_cu; | |
17482 | baton->locexpr.size = DW_BLOCK (target_attr)->size; | |
17483 | baton->locexpr.data = DW_BLOCK (target_attr)->data; | |
17484 | prop->data.baton = baton; | |
17485 | prop->kind = PROP_LOCEXPR; | |
17486 | gdb_assert (prop->data.baton != NULL); | |
17487 | } | |
17488 | else | |
17489 | { | |
17490 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
17491 | "dynamic property"); | |
17492 | return 0; | |
17493 | } | |
17494 | break; | |
17495 | case DW_AT_data_member_location: | |
17496 | { | |
17497 | LONGEST offset; | |
17498 | ||
17499 | if (!handle_data_member_location (target_die, target_cu, | |
17500 | &offset)) | |
17501 | return 0; | |
17502 | ||
8d749320 | 17503 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
6ad395a7 JB |
17504 | baton->referenced_type = read_type_die (target_die->parent, |
17505 | target_cu); | |
df25ebbd JB |
17506 | baton->offset_info.offset = offset; |
17507 | baton->offset_info.type = die_type (target_die, target_cu); | |
17508 | prop->data.baton = baton; | |
17509 | prop->kind = PROP_ADDR_OFFSET; | |
17510 | break; | |
17511 | } | |
80180f79 SA |
17512 | } |
17513 | } | |
17514 | else if (attr_form_is_constant (attr)) | |
17515 | { | |
17516 | prop->data.const_val = dwarf2_get_attr_constant_value (attr, 0); | |
17517 | prop->kind = PROP_CONST; | |
17518 | } | |
17519 | else | |
17520 | { | |
17521 | dwarf2_invalid_attrib_class_complaint (dwarf_form_name (attr->form), | |
17522 | dwarf2_name (die, cu)); | |
17523 | return 0; | |
17524 | } | |
17525 | ||
17526 | return 1; | |
17527 | } | |
17528 | ||
a02abb62 JB |
17529 | /* Read the given DW_AT_subrange DIE. */ |
17530 | ||
f792889a | 17531 | static struct type * |
a02abb62 JB |
17532 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
17533 | { | |
4c9ad8c2 | 17534 | struct type *base_type, *orig_base_type; |
a02abb62 JB |
17535 | struct type *range_type; |
17536 | struct attribute *attr; | |
729efb13 | 17537 | struct dynamic_prop low, high; |
4fae6e18 | 17538 | int low_default_is_valid; |
c451ebe5 | 17539 | int high_bound_is_count = 0; |
15d034d0 | 17540 | const char *name; |
43bbcdc2 | 17541 | LONGEST negative_mask; |
e77813c8 | 17542 | |
4c9ad8c2 TT |
17543 | orig_base_type = die_type (die, cu); |
17544 | /* If ORIG_BASE_TYPE is a typedef, it will not be TYPE_UNSIGNED, | |
17545 | whereas the real type might be. So, we use ORIG_BASE_TYPE when | |
17546 | creating the range type, but we use the result of check_typedef | |
17547 | when examining properties of the type. */ | |
17548 | base_type = check_typedef (orig_base_type); | |
a02abb62 | 17549 | |
7e314c57 JK |
17550 | /* The die_type call above may have already set the type for this DIE. */ |
17551 | range_type = get_die_type (die, cu); | |
17552 | if (range_type) | |
17553 | return range_type; | |
17554 | ||
729efb13 SA |
17555 | low.kind = PROP_CONST; |
17556 | high.kind = PROP_CONST; | |
17557 | high.data.const_val = 0; | |
17558 | ||
4fae6e18 JK |
17559 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
17560 | omitting DW_AT_lower_bound. */ | |
17561 | switch (cu->language) | |
6e70227d | 17562 | { |
4fae6e18 JK |
17563 | case language_c: |
17564 | case language_cplus: | |
729efb13 | 17565 | low.data.const_val = 0; |
4fae6e18 JK |
17566 | low_default_is_valid = 1; |
17567 | break; | |
17568 | case language_fortran: | |
729efb13 | 17569 | low.data.const_val = 1; |
4fae6e18 JK |
17570 | low_default_is_valid = 1; |
17571 | break; | |
17572 | case language_d: | |
4fae6e18 | 17573 | case language_objc: |
c44af4eb | 17574 | case language_rust: |
729efb13 | 17575 | low.data.const_val = 0; |
4fae6e18 JK |
17576 | low_default_is_valid = (cu->header.version >= 4); |
17577 | break; | |
17578 | case language_ada: | |
17579 | case language_m2: | |
17580 | case language_pascal: | |
729efb13 | 17581 | low.data.const_val = 1; |
4fae6e18 JK |
17582 | low_default_is_valid = (cu->header.version >= 4); |
17583 | break; | |
17584 | default: | |
729efb13 | 17585 | low.data.const_val = 0; |
4fae6e18 JK |
17586 | low_default_is_valid = 0; |
17587 | break; | |
a02abb62 JB |
17588 | } |
17589 | ||
e142c38c | 17590 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 | 17591 | if (attr) |
11c1ba78 | 17592 | attr_to_dynamic_prop (attr, die, cu, &low); |
4fae6e18 | 17593 | else if (!low_default_is_valid) |
b98664d3 | 17594 | complaint (_("Missing DW_AT_lower_bound " |
9d8780f0 SM |
17595 | "- DIE at %s [in module %s]"), |
17596 | sect_offset_str (die->sect_off), | |
518817b3 | 17597 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
a02abb62 | 17598 | |
e142c38c | 17599 | attr = dwarf2_attr (die, DW_AT_upper_bound, cu); |
80180f79 | 17600 | if (!attr_to_dynamic_prop (attr, die, cu, &high)) |
e77813c8 PM |
17601 | { |
17602 | attr = dwarf2_attr (die, DW_AT_count, cu); | |
c451ebe5 | 17603 | if (attr_to_dynamic_prop (attr, die, cu, &high)) |
6b662e19 | 17604 | { |
c451ebe5 SA |
17605 | /* If bounds are constant do the final calculation here. */ |
17606 | if (low.kind == PROP_CONST && high.kind == PROP_CONST) | |
17607 | high.data.const_val = low.data.const_val + high.data.const_val - 1; | |
17608 | else | |
17609 | high_bound_is_count = 1; | |
c2ff108b | 17610 | } |
e77813c8 PM |
17611 | } |
17612 | ||
17613 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
17614 | without specifying a base type. | |
17615 | In that case, the base type must be set to the type of | |
17616 | the lower bound, upper bound or count, in that order, if any of these | |
17617 | three attributes references an object that has a type. | |
17618 | If no base type is found, the Dwarf-2 specifications say that | |
17619 | a signed integer type of size equal to the size of an address should | |
17620 | be used. | |
17621 | For the following C code: `extern char gdb_int [];' | |
17622 | GCC produces an empty range DIE. | |
17623 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
0963b4bd | 17624 | high bound or count are not yet handled by this code. */ |
e77813c8 PM |
17625 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) |
17626 | { | |
518817b3 | 17627 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e77813c8 PM |
17628 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
17629 | int addr_size = gdbarch_addr_bit (gdbarch) /8; | |
17630 | struct type *int_type = objfile_type (objfile)->builtin_int; | |
17631 | ||
17632 | /* Test "int", "long int", and "long long int" objfile types, | |
17633 | and select the first one having a size above or equal to the | |
17634 | architecture address size. */ | |
17635 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
17636 | base_type = int_type; | |
17637 | else | |
17638 | { | |
17639 | int_type = objfile_type (objfile)->builtin_long; | |
17640 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
17641 | base_type = int_type; | |
17642 | else | |
17643 | { | |
17644 | int_type = objfile_type (objfile)->builtin_long_long; | |
17645 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
17646 | base_type = int_type; | |
17647 | } | |
17648 | } | |
17649 | } | |
a02abb62 | 17650 | |
dbb9c2b1 JB |
17651 | /* Normally, the DWARF producers are expected to use a signed |
17652 | constant form (Eg. DW_FORM_sdata) to express negative bounds. | |
17653 | But this is unfortunately not always the case, as witnessed | |
17654 | with GCC, for instance, where the ambiguous DW_FORM_dataN form | |
17655 | is used instead. To work around that ambiguity, we treat | |
17656 | the bounds as signed, and thus sign-extend their values, when | |
17657 | the base type is signed. */ | |
6e70227d | 17658 | negative_mask = |
66c6502d | 17659 | -((LONGEST) 1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1)); |
729efb13 SA |
17660 | if (low.kind == PROP_CONST |
17661 | && !TYPE_UNSIGNED (base_type) && (low.data.const_val & negative_mask)) | |
17662 | low.data.const_val |= negative_mask; | |
17663 | if (high.kind == PROP_CONST | |
17664 | && !TYPE_UNSIGNED (base_type) && (high.data.const_val & negative_mask)) | |
17665 | high.data.const_val |= negative_mask; | |
43bbcdc2 | 17666 | |
729efb13 | 17667 | range_type = create_range_type (NULL, orig_base_type, &low, &high); |
a02abb62 | 17668 | |
c451ebe5 SA |
17669 | if (high_bound_is_count) |
17670 | TYPE_RANGE_DATA (range_type)->flag_upper_bound_is_count = 1; | |
17671 | ||
c2ff108b JK |
17672 | /* Ada expects an empty array on no boundary attributes. */ |
17673 | if (attr == NULL && cu->language != language_ada) | |
729efb13 | 17674 | TYPE_HIGH_BOUND_KIND (range_type) = PROP_UNDEFINED; |
c2ff108b | 17675 | |
39cbfefa DJ |
17676 | name = dwarf2_name (die, cu); |
17677 | if (name) | |
17678 | TYPE_NAME (range_type) = name; | |
6e70227d | 17679 | |
e142c38c | 17680 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
17681 | if (attr) |
17682 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
17683 | ||
2b4424c3 TT |
17684 | maybe_set_alignment (cu, die, range_type); |
17685 | ||
7e314c57 JK |
17686 | set_die_type (die, range_type, cu); |
17687 | ||
17688 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
17689 | set_descriptive_type (range_type, die, cu); |
17690 | ||
7e314c57 | 17691 | return range_type; |
a02abb62 | 17692 | } |
6e70227d | 17693 | |
f792889a | 17694 | static struct type * |
81a17f79 JB |
17695 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
17696 | { | |
17697 | struct type *type; | |
81a17f79 | 17698 | |
518817b3 SM |
17699 | type = init_type (cu->per_cu->dwarf2_per_objfile->objfile, TYPE_CODE_VOID,0, |
17700 | NULL); | |
0114d602 | 17701 | TYPE_NAME (type) = dwarf2_name (die, cu); |
81a17f79 | 17702 | |
74a2f8ff JB |
17703 | /* In Ada, an unspecified type is typically used when the description |
17704 | of the type is defered to a different unit. When encountering | |
17705 | such a type, we treat it as a stub, and try to resolve it later on, | |
17706 | when needed. */ | |
17707 | if (cu->language == language_ada) | |
17708 | TYPE_STUB (type) = 1; | |
17709 | ||
f792889a | 17710 | return set_die_type (die, type, cu); |
81a17f79 | 17711 | } |
a02abb62 | 17712 | |
639d11d3 DC |
17713 | /* Read a single die and all its descendents. Set the die's sibling |
17714 | field to NULL; set other fields in the die correctly, and set all | |
17715 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
17716 | location of the info_ptr after reading all of those dies. PARENT | |
17717 | is the parent of the die in question. */ | |
17718 | ||
17719 | static struct die_info * | |
dee91e82 | 17720 | read_die_and_children (const struct die_reader_specs *reader, |
d521ce57 TT |
17721 | const gdb_byte *info_ptr, |
17722 | const gdb_byte **new_info_ptr, | |
dee91e82 | 17723 | struct die_info *parent) |
639d11d3 DC |
17724 | { |
17725 | struct die_info *die; | |
d521ce57 | 17726 | const gdb_byte *cur_ptr; |
639d11d3 DC |
17727 | int has_children; |
17728 | ||
bf6af496 | 17729 | cur_ptr = read_full_die_1 (reader, &die, info_ptr, &has_children, 0); |
1d325ec1 DJ |
17730 | if (die == NULL) |
17731 | { | |
17732 | *new_info_ptr = cur_ptr; | |
17733 | return NULL; | |
17734 | } | |
93311388 | 17735 | store_in_ref_table (die, reader->cu); |
639d11d3 DC |
17736 | |
17737 | if (has_children) | |
bf6af496 | 17738 | die->child = read_die_and_siblings_1 (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
17739 | else |
17740 | { | |
17741 | die->child = NULL; | |
17742 | *new_info_ptr = cur_ptr; | |
17743 | } | |
17744 | ||
17745 | die->sibling = NULL; | |
17746 | die->parent = parent; | |
17747 | return die; | |
17748 | } | |
17749 | ||
17750 | /* Read a die, all of its descendents, and all of its siblings; set | |
17751 | all of the fields of all of the dies correctly. Arguments are as | |
17752 | in read_die_and_children. */ | |
17753 | ||
17754 | static struct die_info * | |
bf6af496 | 17755 | read_die_and_siblings_1 (const struct die_reader_specs *reader, |
d521ce57 TT |
17756 | const gdb_byte *info_ptr, |
17757 | const gdb_byte **new_info_ptr, | |
bf6af496 | 17758 | struct die_info *parent) |
639d11d3 DC |
17759 | { |
17760 | struct die_info *first_die, *last_sibling; | |
d521ce57 | 17761 | const gdb_byte *cur_ptr; |
639d11d3 | 17762 | |
c906108c | 17763 | cur_ptr = info_ptr; |
639d11d3 DC |
17764 | first_die = last_sibling = NULL; |
17765 | ||
17766 | while (1) | |
c906108c | 17767 | { |
639d11d3 | 17768 | struct die_info *die |
dee91e82 | 17769 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 17770 | |
1d325ec1 | 17771 | if (die == NULL) |
c906108c | 17772 | { |
639d11d3 DC |
17773 | *new_info_ptr = cur_ptr; |
17774 | return first_die; | |
c906108c | 17775 | } |
1d325ec1 DJ |
17776 | |
17777 | if (!first_die) | |
17778 | first_die = die; | |
c906108c | 17779 | else |
1d325ec1 DJ |
17780 | last_sibling->sibling = die; |
17781 | ||
17782 | last_sibling = die; | |
c906108c | 17783 | } |
c906108c SS |
17784 | } |
17785 | ||
bf6af496 DE |
17786 | /* Read a die, all of its descendents, and all of its siblings; set |
17787 | all of the fields of all of the dies correctly. Arguments are as | |
17788 | in read_die_and_children. | |
17789 | This the main entry point for reading a DIE and all its children. */ | |
17790 | ||
17791 | static struct die_info * | |
17792 | read_die_and_siblings (const struct die_reader_specs *reader, | |
d521ce57 TT |
17793 | const gdb_byte *info_ptr, |
17794 | const gdb_byte **new_info_ptr, | |
bf6af496 DE |
17795 | struct die_info *parent) |
17796 | { | |
17797 | struct die_info *die = read_die_and_siblings_1 (reader, info_ptr, | |
17798 | new_info_ptr, parent); | |
17799 | ||
b4f54984 | 17800 | if (dwarf_die_debug) |
bf6af496 DE |
17801 | { |
17802 | fprintf_unfiltered (gdb_stdlog, | |
17803 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 17804 | get_section_name (reader->die_section), |
bf6af496 DE |
17805 | (unsigned) (info_ptr - reader->die_section->buffer), |
17806 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 17807 | dump_die (die, dwarf_die_debug); |
bf6af496 DE |
17808 | } |
17809 | ||
17810 | return die; | |
17811 | } | |
17812 | ||
3019eac3 DE |
17813 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
17814 | attributes. | |
17815 | The caller is responsible for filling in the extra attributes | |
17816 | and updating (*DIEP)->num_attrs. | |
17817 | Set DIEP to point to a newly allocated die with its information, | |
17818 | except for its child, sibling, and parent fields. | |
17819 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
93311388 | 17820 | |
d521ce57 | 17821 | static const gdb_byte * |
3019eac3 | 17822 | read_full_die_1 (const struct die_reader_specs *reader, |
d521ce57 | 17823 | struct die_info **diep, const gdb_byte *info_ptr, |
3019eac3 | 17824 | int *has_children, int num_extra_attrs) |
93311388 | 17825 | { |
b64f50a1 | 17826 | unsigned int abbrev_number, bytes_read, i; |
93311388 DE |
17827 | struct abbrev_info *abbrev; |
17828 | struct die_info *die; | |
17829 | struct dwarf2_cu *cu = reader->cu; | |
17830 | bfd *abfd = reader->abfd; | |
17831 | ||
9c541725 | 17832 | sect_offset sect_off = (sect_offset) (info_ptr - reader->buffer); |
93311388 DE |
17833 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
17834 | info_ptr += bytes_read; | |
17835 | if (!abbrev_number) | |
17836 | { | |
17837 | *diep = NULL; | |
17838 | *has_children = 0; | |
17839 | return info_ptr; | |
17840 | } | |
17841 | ||
685af9cd | 17842 | abbrev = reader->abbrev_table->lookup_abbrev (abbrev_number); |
93311388 | 17843 | if (!abbrev) |
348e048f DE |
17844 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
17845 | abbrev_number, | |
17846 | bfd_get_filename (abfd)); | |
17847 | ||
3019eac3 | 17848 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
9c541725 | 17849 | die->sect_off = sect_off; |
93311388 DE |
17850 | die->tag = abbrev->tag; |
17851 | die->abbrev = abbrev_number; | |
17852 | ||
3019eac3 DE |
17853 | /* Make the result usable. |
17854 | The caller needs to update num_attrs after adding the extra | |
17855 | attributes. */ | |
93311388 DE |
17856 | die->num_attrs = abbrev->num_attrs; |
17857 | ||
17858 | for (i = 0; i < abbrev->num_attrs; ++i) | |
dee91e82 DE |
17859 | info_ptr = read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], |
17860 | info_ptr); | |
93311388 DE |
17861 | |
17862 | *diep = die; | |
17863 | *has_children = abbrev->has_children; | |
17864 | return info_ptr; | |
17865 | } | |
17866 | ||
3019eac3 DE |
17867 | /* Read a die and all its attributes. |
17868 | Set DIEP to point to a newly allocated die with its information, | |
17869 | except for its child, sibling, and parent fields. | |
17870 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
17871 | ||
d521ce57 | 17872 | static const gdb_byte * |
3019eac3 | 17873 | read_full_die (const struct die_reader_specs *reader, |
d521ce57 | 17874 | struct die_info **diep, const gdb_byte *info_ptr, |
3019eac3 DE |
17875 | int *has_children) |
17876 | { | |
d521ce57 | 17877 | const gdb_byte *result; |
bf6af496 DE |
17878 | |
17879 | result = read_full_die_1 (reader, diep, info_ptr, has_children, 0); | |
17880 | ||
b4f54984 | 17881 | if (dwarf_die_debug) |
bf6af496 DE |
17882 | { |
17883 | fprintf_unfiltered (gdb_stdlog, | |
17884 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 17885 | get_section_name (reader->die_section), |
bf6af496 DE |
17886 | (unsigned) (info_ptr - reader->die_section->buffer), |
17887 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 17888 | dump_die (*diep, dwarf_die_debug); |
bf6af496 DE |
17889 | } |
17890 | ||
17891 | return result; | |
3019eac3 | 17892 | } |
433df2d4 DE |
17893 | \f |
17894 | /* Abbreviation tables. | |
3019eac3 | 17895 | |
433df2d4 | 17896 | In DWARF version 2, the description of the debugging information is |
c906108c SS |
17897 | stored in a separate .debug_abbrev section. Before we read any |
17898 | dies from a section we read in all abbreviations and install them | |
433df2d4 DE |
17899 | in a hash table. */ |
17900 | ||
17901 | /* Allocate space for a struct abbrev_info object in ABBREV_TABLE. */ | |
17902 | ||
685af9cd TT |
17903 | struct abbrev_info * |
17904 | abbrev_table::alloc_abbrev () | |
433df2d4 DE |
17905 | { |
17906 | struct abbrev_info *abbrev; | |
17907 | ||
685af9cd | 17908 | abbrev = XOBNEW (&abbrev_obstack, struct abbrev_info); |
433df2d4 | 17909 | memset (abbrev, 0, sizeof (struct abbrev_info)); |
8d749320 | 17910 | |
433df2d4 DE |
17911 | return abbrev; |
17912 | } | |
17913 | ||
17914 | /* Add an abbreviation to the table. */ | |
c906108c | 17915 | |
685af9cd TT |
17916 | void |
17917 | abbrev_table::add_abbrev (unsigned int abbrev_number, | |
17918 | struct abbrev_info *abbrev) | |
433df2d4 DE |
17919 | { |
17920 | unsigned int hash_number; | |
17921 | ||
17922 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
4a17f768 YQ |
17923 | abbrev->next = m_abbrevs[hash_number]; |
17924 | m_abbrevs[hash_number] = abbrev; | |
433df2d4 | 17925 | } |
dee91e82 | 17926 | |
433df2d4 DE |
17927 | /* Look up an abbrev in the table. |
17928 | Returns NULL if the abbrev is not found. */ | |
17929 | ||
685af9cd TT |
17930 | struct abbrev_info * |
17931 | abbrev_table::lookup_abbrev (unsigned int abbrev_number) | |
c906108c | 17932 | { |
433df2d4 DE |
17933 | unsigned int hash_number; |
17934 | struct abbrev_info *abbrev; | |
17935 | ||
17936 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
4a17f768 | 17937 | abbrev = m_abbrevs[hash_number]; |
433df2d4 DE |
17938 | |
17939 | while (abbrev) | |
17940 | { | |
17941 | if (abbrev->number == abbrev_number) | |
17942 | return abbrev; | |
17943 | abbrev = abbrev->next; | |
17944 | } | |
17945 | return NULL; | |
17946 | } | |
17947 | ||
17948 | /* Read in an abbrev table. */ | |
17949 | ||
685af9cd | 17950 | static abbrev_table_up |
ed2dc618 SM |
17951 | abbrev_table_read_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
17952 | struct dwarf2_section_info *section, | |
9c541725 | 17953 | sect_offset sect_off) |
433df2d4 DE |
17954 | { |
17955 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
a32a8923 | 17956 | bfd *abfd = get_section_bfd_owner (section); |
d521ce57 | 17957 | const gdb_byte *abbrev_ptr; |
c906108c SS |
17958 | struct abbrev_info *cur_abbrev; |
17959 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
433df2d4 | 17960 | unsigned int abbrev_form; |
f3dd6933 DJ |
17961 | struct attr_abbrev *cur_attrs; |
17962 | unsigned int allocated_attrs; | |
c906108c | 17963 | |
685af9cd | 17964 | abbrev_table_up abbrev_table (new struct abbrev_table (sect_off)); |
c906108c | 17965 | |
433df2d4 | 17966 | dwarf2_read_section (objfile, section); |
9c541725 | 17967 | abbrev_ptr = section->buffer + to_underlying (sect_off); |
c906108c SS |
17968 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
17969 | abbrev_ptr += bytes_read; | |
17970 | ||
f3dd6933 | 17971 | allocated_attrs = ATTR_ALLOC_CHUNK; |
8d749320 | 17972 | cur_attrs = XNEWVEC (struct attr_abbrev, allocated_attrs); |
6e70227d | 17973 | |
0963b4bd | 17974 | /* Loop until we reach an abbrev number of 0. */ |
c906108c SS |
17975 | while (abbrev_number) |
17976 | { | |
685af9cd | 17977 | cur_abbrev = abbrev_table->alloc_abbrev (); |
c906108c SS |
17978 | |
17979 | /* read in abbrev header */ | |
17980 | cur_abbrev->number = abbrev_number; | |
aead7601 SM |
17981 | cur_abbrev->tag |
17982 | = (enum dwarf_tag) read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
c906108c SS |
17983 | abbrev_ptr += bytes_read; |
17984 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
17985 | abbrev_ptr += 1; | |
17986 | ||
17987 | /* now read in declarations */ | |
22d2f3ab | 17988 | for (;;) |
c906108c | 17989 | { |
43988095 JK |
17990 | LONGEST implicit_const; |
17991 | ||
22d2f3ab JK |
17992 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
17993 | abbrev_ptr += bytes_read; | |
17994 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
17995 | abbrev_ptr += bytes_read; | |
43988095 JK |
17996 | if (abbrev_form == DW_FORM_implicit_const) |
17997 | { | |
17998 | implicit_const = read_signed_leb128 (abfd, abbrev_ptr, | |
17999 | &bytes_read); | |
18000 | abbrev_ptr += bytes_read; | |
18001 | } | |
18002 | else | |
18003 | { | |
18004 | /* Initialize it due to a false compiler warning. */ | |
18005 | implicit_const = -1; | |
18006 | } | |
22d2f3ab JK |
18007 | |
18008 | if (abbrev_name == 0) | |
18009 | break; | |
18010 | ||
f3dd6933 | 18011 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 18012 | { |
f3dd6933 DJ |
18013 | allocated_attrs += ATTR_ALLOC_CHUNK; |
18014 | cur_attrs | |
224c3ddb | 18015 | = XRESIZEVEC (struct attr_abbrev, cur_attrs, allocated_attrs); |
c906108c | 18016 | } |
ae038cb0 | 18017 | |
aead7601 SM |
18018 | cur_attrs[cur_abbrev->num_attrs].name |
18019 | = (enum dwarf_attribute) abbrev_name; | |
22d2f3ab | 18020 | cur_attrs[cur_abbrev->num_attrs].form |
aead7601 | 18021 | = (enum dwarf_form) abbrev_form; |
43988095 | 18022 | cur_attrs[cur_abbrev->num_attrs].implicit_const = implicit_const; |
22d2f3ab | 18023 | ++cur_abbrev->num_attrs; |
c906108c SS |
18024 | } |
18025 | ||
8d749320 SM |
18026 | cur_abbrev->attrs = |
18027 | XOBNEWVEC (&abbrev_table->abbrev_obstack, struct attr_abbrev, | |
18028 | cur_abbrev->num_attrs); | |
f3dd6933 DJ |
18029 | memcpy (cur_abbrev->attrs, cur_attrs, |
18030 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
18031 | ||
685af9cd | 18032 | abbrev_table->add_abbrev (abbrev_number, cur_abbrev); |
c906108c SS |
18033 | |
18034 | /* Get next abbreviation. | |
18035 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
18036 | always properly terminated with an abbrev number of 0. |
18037 | Exit loop if we encounter an abbreviation which we have | |
18038 | already read (which means we are about to read the abbreviations | |
18039 | for the next compile unit) or if the end of the abbreviation | |
18040 | table is reached. */ | |
433df2d4 | 18041 | if ((unsigned int) (abbrev_ptr - section->buffer) >= section->size) |
c906108c SS |
18042 | break; |
18043 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
18044 | abbrev_ptr += bytes_read; | |
685af9cd | 18045 | if (abbrev_table->lookup_abbrev (abbrev_number) != NULL) |
c906108c SS |
18046 | break; |
18047 | } | |
f3dd6933 DJ |
18048 | |
18049 | xfree (cur_attrs); | |
433df2d4 | 18050 | return abbrev_table; |
c906108c SS |
18051 | } |
18052 | ||
72bf9492 DJ |
18053 | /* Returns nonzero if TAG represents a type that we might generate a partial |
18054 | symbol for. */ | |
18055 | ||
18056 | static int | |
18057 | is_type_tag_for_partial (int tag) | |
18058 | { | |
18059 | switch (tag) | |
18060 | { | |
18061 | #if 0 | |
18062 | /* Some types that would be reasonable to generate partial symbols for, | |
18063 | that we don't at present. */ | |
18064 | case DW_TAG_array_type: | |
18065 | case DW_TAG_file_type: | |
18066 | case DW_TAG_ptr_to_member_type: | |
18067 | case DW_TAG_set_type: | |
18068 | case DW_TAG_string_type: | |
18069 | case DW_TAG_subroutine_type: | |
18070 | #endif | |
18071 | case DW_TAG_base_type: | |
18072 | case DW_TAG_class_type: | |
680b30c7 | 18073 | case DW_TAG_interface_type: |
72bf9492 DJ |
18074 | case DW_TAG_enumeration_type: |
18075 | case DW_TAG_structure_type: | |
18076 | case DW_TAG_subrange_type: | |
18077 | case DW_TAG_typedef: | |
18078 | case DW_TAG_union_type: | |
18079 | return 1; | |
18080 | default: | |
18081 | return 0; | |
18082 | } | |
18083 | } | |
18084 | ||
18085 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
18086 | ||
18087 | static struct partial_die_info * | |
dee91e82 | 18088 | load_partial_dies (const struct die_reader_specs *reader, |
d521ce57 | 18089 | const gdb_byte *info_ptr, int building_psymtab) |
72bf9492 | 18090 | { |
dee91e82 | 18091 | struct dwarf2_cu *cu = reader->cu; |
518817b3 | 18092 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
72bf9492 | 18093 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; |
72bf9492 | 18094 | unsigned int bytes_read; |
5afb4e99 | 18095 | unsigned int load_all = 0; |
72bf9492 DJ |
18096 | int nesting_level = 1; |
18097 | ||
18098 | parent_die = NULL; | |
18099 | last_die = NULL; | |
18100 | ||
7adf1e79 DE |
18101 | gdb_assert (cu->per_cu != NULL); |
18102 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
18103 | load_all = 1; |
18104 | ||
72bf9492 DJ |
18105 | cu->partial_dies |
18106 | = htab_create_alloc_ex (cu->header.length / 12, | |
18107 | partial_die_hash, | |
18108 | partial_die_eq, | |
18109 | NULL, | |
18110 | &cu->comp_unit_obstack, | |
18111 | hashtab_obstack_allocate, | |
18112 | dummy_obstack_deallocate); | |
18113 | ||
72bf9492 DJ |
18114 | while (1) |
18115 | { | |
685af9cd | 18116 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); |
72bf9492 DJ |
18117 | |
18118 | /* A NULL abbrev means the end of a series of children. */ | |
18119 | if (abbrev == NULL) | |
18120 | { | |
18121 | if (--nesting_level == 0) | |
cd9983dd YQ |
18122 | return first_die; |
18123 | ||
72bf9492 DJ |
18124 | info_ptr += bytes_read; |
18125 | last_die = parent_die; | |
18126 | parent_die = parent_die->die_parent; | |
18127 | continue; | |
18128 | } | |
18129 | ||
98bfdba5 PA |
18130 | /* Check for template arguments. We never save these; if |
18131 | they're seen, we just mark the parent, and go on our way. */ | |
18132 | if (parent_die != NULL | |
18133 | && cu->language == language_cplus | |
18134 | && (abbrev->tag == DW_TAG_template_type_param | |
18135 | || abbrev->tag == DW_TAG_template_value_param)) | |
18136 | { | |
18137 | parent_die->has_template_arguments = 1; | |
18138 | ||
18139 | if (!load_all) | |
18140 | { | |
18141 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 18142 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
18143 | continue; |
18144 | } | |
18145 | } | |
18146 | ||
0d99eb77 | 18147 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
18148 | Skip their other children. */ |
18149 | if (!load_all | |
18150 | && cu->language == language_cplus | |
18151 | && parent_die != NULL | |
18152 | && parent_die->tag == DW_TAG_subprogram) | |
18153 | { | |
dee91e82 | 18154 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
18155 | continue; |
18156 | } | |
18157 | ||
5afb4e99 DJ |
18158 | /* Check whether this DIE is interesting enough to save. Normally |
18159 | we would not be interested in members here, but there may be | |
18160 | later variables referencing them via DW_AT_specification (for | |
18161 | static members). */ | |
18162 | if (!load_all | |
18163 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 18164 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
18165 | && abbrev->tag != DW_TAG_enumerator |
18166 | && abbrev->tag != DW_TAG_subprogram | |
b1dc1806 | 18167 | && abbrev->tag != DW_TAG_inlined_subroutine |
bc30ff58 | 18168 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 18169 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 18170 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 18171 | && abbrev->tag != DW_TAG_module |
95554aad | 18172 | && abbrev->tag != DW_TAG_member |
74921315 KS |
18173 | && abbrev->tag != DW_TAG_imported_unit |
18174 | && abbrev->tag != DW_TAG_imported_declaration) | |
72bf9492 DJ |
18175 | { |
18176 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 18177 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
18178 | continue; |
18179 | } | |
18180 | ||
6f06d47b YQ |
18181 | struct partial_die_info pdi ((sect_offset) (info_ptr - reader->buffer), |
18182 | abbrev); | |
cd9983dd | 18183 | |
48fbe735 | 18184 | info_ptr = pdi.read (reader, *abbrev, info_ptr + bytes_read); |
72bf9492 DJ |
18185 | |
18186 | /* This two-pass algorithm for processing partial symbols has a | |
18187 | high cost in cache pressure. Thus, handle some simple cases | |
18188 | here which cover the majority of C partial symbols. DIEs | |
18189 | which neither have specification tags in them, nor could have | |
18190 | specification tags elsewhere pointing at them, can simply be | |
18191 | processed and discarded. | |
18192 | ||
18193 | This segment is also optional; scan_partial_symbols and | |
18194 | add_partial_symbol will handle these DIEs if we chain | |
18195 | them in normally. When compilers which do not emit large | |
18196 | quantities of duplicate debug information are more common, | |
18197 | this code can probably be removed. */ | |
18198 | ||
18199 | /* Any complete simple types at the top level (pretty much all | |
18200 | of them, for a language without namespaces), can be processed | |
18201 | directly. */ | |
18202 | if (parent_die == NULL | |
cd9983dd YQ |
18203 | && pdi.has_specification == 0 |
18204 | && pdi.is_declaration == 0 | |
18205 | && ((pdi.tag == DW_TAG_typedef && !pdi.has_children) | |
18206 | || pdi.tag == DW_TAG_base_type | |
18207 | || pdi.tag == DW_TAG_subrange_type)) | |
72bf9492 | 18208 | { |
cd9983dd YQ |
18209 | if (building_psymtab && pdi.name != NULL) |
18210 | add_psymbol_to_list (pdi.name, strlen (pdi.name), 0, | |
72bf9492 | 18211 | VAR_DOMAIN, LOC_TYPEDEF, |
bb5ed363 | 18212 | &objfile->static_psymbols, |
1762568f | 18213 | 0, cu->language, objfile); |
cd9983dd | 18214 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
18215 | continue; |
18216 | } | |
18217 | ||
d8228535 JK |
18218 | /* The exception for DW_TAG_typedef with has_children above is |
18219 | a workaround of GCC PR debug/47510. In the case of this complaint | |
a737d952 | 18220 | type_name_or_error will error on such types later. |
d8228535 JK |
18221 | |
18222 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
18223 | it could not find the child DIEs referenced later, this is checked | |
18224 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
18225 | ||
cd9983dd | 18226 | if (pdi.tag == DW_TAG_typedef && pdi.has_children) |
b98664d3 | 18227 | complaint (_("DW_TAG_typedef has childen - GCC PR debug/47510 bug " |
9d8780f0 | 18228 | "- DIE at %s [in module %s]"), |
cd9983dd | 18229 | sect_offset_str (pdi.sect_off), objfile_name (objfile)); |
d8228535 | 18230 | |
72bf9492 DJ |
18231 | /* If we're at the second level, and we're an enumerator, and |
18232 | our parent has no specification (meaning possibly lives in a | |
18233 | namespace elsewhere), then we can add the partial symbol now | |
18234 | instead of queueing it. */ | |
cd9983dd | 18235 | if (pdi.tag == DW_TAG_enumerator |
72bf9492 DJ |
18236 | && parent_die != NULL |
18237 | && parent_die->die_parent == NULL | |
18238 | && parent_die->tag == DW_TAG_enumeration_type | |
18239 | && parent_die->has_specification == 0) | |
18240 | { | |
cd9983dd | 18241 | if (pdi.name == NULL) |
b98664d3 | 18242 | complaint (_("malformed enumerator DIE ignored")); |
72bf9492 | 18243 | else if (building_psymtab) |
cd9983dd | 18244 | add_psymbol_to_list (pdi.name, strlen (pdi.name), 0, |
72bf9492 | 18245 | VAR_DOMAIN, LOC_CONST, |
9c37b5ae | 18246 | cu->language == language_cplus |
bb5ed363 DE |
18247 | ? &objfile->global_psymbols |
18248 | : &objfile->static_psymbols, | |
1762568f | 18249 | 0, cu->language, objfile); |
72bf9492 | 18250 | |
cd9983dd | 18251 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
18252 | continue; |
18253 | } | |
18254 | ||
cd9983dd | 18255 | struct partial_die_info *part_die |
6f06d47b | 18256 | = new (&cu->comp_unit_obstack) partial_die_info (pdi); |
cd9983dd | 18257 | |
72bf9492 DJ |
18258 | /* We'll save this DIE so link it in. */ |
18259 | part_die->die_parent = parent_die; | |
18260 | part_die->die_sibling = NULL; | |
18261 | part_die->die_child = NULL; | |
18262 | ||
18263 | if (last_die && last_die == parent_die) | |
18264 | last_die->die_child = part_die; | |
18265 | else if (last_die) | |
18266 | last_die->die_sibling = part_die; | |
18267 | ||
18268 | last_die = part_die; | |
18269 | ||
18270 | if (first_die == NULL) | |
18271 | first_die = part_die; | |
18272 | ||
18273 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
18274 | find interesting need to be in the hash table, because we | |
18275 | also have the parent/sibling/child chains; only those that we | |
18276 | might refer to by offset later during partial symbol reading. | |
18277 | ||
18278 | For now this means things that might have be the target of a | |
18279 | DW_AT_specification, DW_AT_abstract_origin, or | |
18280 | DW_AT_extension. DW_AT_extension will refer only to | |
18281 | namespaces; DW_AT_abstract_origin refers to functions (and | |
18282 | many things under the function DIE, but we do not recurse | |
18283 | into function DIEs during partial symbol reading) and | |
18284 | possibly variables as well; DW_AT_specification refers to | |
18285 | declarations. Declarations ought to have the DW_AT_declaration | |
18286 | flag. It happens that GCC forgets to put it in sometimes, but | |
18287 | only for functions, not for types. | |
18288 | ||
18289 | Adding more things than necessary to the hash table is harmless | |
18290 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
18291 | wasted time in find_partial_die, when we reread the compilation |
18292 | unit with load_all_dies set. */ | |
72bf9492 | 18293 | |
5afb4e99 | 18294 | if (load_all |
72929c62 | 18295 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 18296 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
18297 | || abbrev->tag == DW_TAG_variable |
18298 | || abbrev->tag == DW_TAG_namespace | |
18299 | || part_die->is_declaration) | |
18300 | { | |
18301 | void **slot; | |
18302 | ||
18303 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
9c541725 PA |
18304 | to_underlying (part_die->sect_off), |
18305 | INSERT); | |
72bf9492 DJ |
18306 | *slot = part_die; |
18307 | } | |
18308 | ||
72bf9492 | 18309 | /* For some DIEs we want to follow their children (if any). For C |
bc30ff58 | 18310 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
18311 | languages we have to, so that we can get at method physnames |
18312 | to infer fully qualified class names, for DW_AT_specification, | |
18313 | and for C++ template arguments. For C++, we also look one level | |
18314 | inside functions to find template arguments (if the name of the | |
18315 | function does not already contain the template arguments). | |
bc30ff58 JB |
18316 | |
18317 | For Ada, we need to scan the children of subprograms and lexical | |
18318 | blocks as well because Ada allows the definition of nested | |
18319 | entities that could be interesting for the debugger, such as | |
18320 | nested subprograms for instance. */ | |
72bf9492 | 18321 | if (last_die->has_children |
5afb4e99 DJ |
18322 | && (load_all |
18323 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 18324 | || last_die->tag == DW_TAG_module |
72bf9492 | 18325 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
18326 | || (cu->language == language_cplus |
18327 | && last_die->tag == DW_TAG_subprogram | |
18328 | && (last_die->name == NULL | |
18329 | || strchr (last_die->name, '<') == NULL)) | |
72bf9492 DJ |
18330 | || (cu->language != language_c |
18331 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 18332 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 18333 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 JB |
18334 | || last_die->tag == DW_TAG_union_type)) |
18335 | || (cu->language == language_ada | |
18336 | && (last_die->tag == DW_TAG_subprogram | |
18337 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
18338 | { |
18339 | nesting_level++; | |
18340 | parent_die = last_die; | |
18341 | continue; | |
18342 | } | |
18343 | ||
18344 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 18345 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
18346 | |
18347 | /* Back to the top, do it again. */ | |
18348 | } | |
18349 | } | |
18350 | ||
6f06d47b YQ |
18351 | partial_die_info::partial_die_info (sect_offset sect_off_, |
18352 | struct abbrev_info *abbrev) | |
18353 | : partial_die_info (sect_off_, abbrev->tag, abbrev->has_children) | |
18354 | { | |
18355 | } | |
18356 | ||
35cc7ed7 YQ |
18357 | /* Read a minimal amount of information into the minimal die structure. |
18358 | INFO_PTR should point just after the initial uleb128 of a DIE. */ | |
c906108c | 18359 | |
48fbe735 YQ |
18360 | const gdb_byte * |
18361 | partial_die_info::read (const struct die_reader_specs *reader, | |
18362 | const struct abbrev_info &abbrev, const gdb_byte *info_ptr) | |
c906108c | 18363 | { |
dee91e82 | 18364 | struct dwarf2_cu *cu = reader->cu; |
518817b3 SM |
18365 | struct dwarf2_per_objfile *dwarf2_per_objfile |
18366 | = cu->per_cu->dwarf2_per_objfile; | |
fa238c03 | 18367 | unsigned int i; |
c5aa993b | 18368 | int has_low_pc_attr = 0; |
c906108c | 18369 | int has_high_pc_attr = 0; |
91da1414 | 18370 | int high_pc_relative = 0; |
c906108c | 18371 | |
fd0a254f | 18372 | for (i = 0; i < abbrev.num_attrs; ++i) |
c906108c | 18373 | { |
48fbe735 YQ |
18374 | struct attribute attr; |
18375 | ||
fd0a254f | 18376 | info_ptr = read_attribute (reader, &attr, &abbrev.attrs[i], info_ptr); |
c906108c SS |
18377 | |
18378 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 18379 | partial symbol table. */ |
c906108c SS |
18380 | switch (attr.name) |
18381 | { | |
18382 | case DW_AT_name: | |
48fbe735 | 18383 | switch (tag) |
71c25dea TT |
18384 | { |
18385 | case DW_TAG_compile_unit: | |
95554aad | 18386 | case DW_TAG_partial_unit: |
348e048f | 18387 | case DW_TAG_type_unit: |
71c25dea TT |
18388 | /* Compilation units have a DW_AT_name that is a filename, not |
18389 | a source language identifier. */ | |
18390 | case DW_TAG_enumeration_type: | |
18391 | case DW_TAG_enumerator: | |
18392 | /* These tags always have simple identifiers already; no need | |
18393 | to canonicalize them. */ | |
48fbe735 | 18394 | name = DW_STRING (&attr); |
71c25dea TT |
18395 | break; |
18396 | default: | |
48fbe735 YQ |
18397 | { |
18398 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
18399 | ||
18400 | name | |
18401 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, | |
18402 | &objfile->per_bfd->storage_obstack); | |
18403 | } | |
71c25dea TT |
18404 | break; |
18405 | } | |
c906108c | 18406 | break; |
31ef98ae | 18407 | case DW_AT_linkage_name: |
c906108c | 18408 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
18409 | /* Note that both forms of linkage name might appear. We |
18410 | assume they will be the same, and we only store the last | |
18411 | one we see. */ | |
94af9270 | 18412 | if (cu->language == language_ada) |
48fbe735 YQ |
18413 | name = DW_STRING (&attr); |
18414 | linkage_name = DW_STRING (&attr); | |
c906108c SS |
18415 | break; |
18416 | case DW_AT_low_pc: | |
18417 | has_low_pc_attr = 1; | |
48fbe735 | 18418 | lowpc = attr_value_as_address (&attr); |
c906108c SS |
18419 | break; |
18420 | case DW_AT_high_pc: | |
18421 | has_high_pc_attr = 1; | |
48fbe735 | 18422 | highpc = attr_value_as_address (&attr); |
31aa7e4e JB |
18423 | if (cu->header.version >= 4 && attr_form_is_constant (&attr)) |
18424 | high_pc_relative = 1; | |
c906108c SS |
18425 | break; |
18426 | case DW_AT_location: | |
0963b4bd | 18427 | /* Support the .debug_loc offsets. */ |
8e19ed76 PS |
18428 | if (attr_form_is_block (&attr)) |
18429 | { | |
48fbe735 | 18430 | d.locdesc = DW_BLOCK (&attr); |
8e19ed76 | 18431 | } |
3690dd37 | 18432 | else if (attr_form_is_section_offset (&attr)) |
8e19ed76 | 18433 | { |
4d3c2250 | 18434 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
18435 | } |
18436 | else | |
18437 | { | |
4d3c2250 KB |
18438 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
18439 | "partial symbol information"); | |
8e19ed76 | 18440 | } |
c906108c | 18441 | break; |
c906108c | 18442 | case DW_AT_external: |
48fbe735 | 18443 | is_external = DW_UNSND (&attr); |
c906108c SS |
18444 | break; |
18445 | case DW_AT_declaration: | |
48fbe735 | 18446 | is_declaration = DW_UNSND (&attr); |
c906108c SS |
18447 | break; |
18448 | case DW_AT_type: | |
48fbe735 | 18449 | has_type = 1; |
c906108c SS |
18450 | break; |
18451 | case DW_AT_abstract_origin: | |
18452 | case DW_AT_specification: | |
72bf9492 | 18453 | case DW_AT_extension: |
48fbe735 YQ |
18454 | has_specification = 1; |
18455 | spec_offset = dwarf2_get_ref_die_offset (&attr); | |
18456 | spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt | |
36586728 | 18457 | || cu->per_cu->is_dwz); |
c906108c SS |
18458 | break; |
18459 | case DW_AT_sibling: | |
18460 | /* Ignore absolute siblings, they might point outside of | |
18461 | the current compile unit. */ | |
18462 | if (attr.form == DW_FORM_ref_addr) | |
b98664d3 | 18463 | complaint (_("ignoring absolute DW_AT_sibling")); |
c906108c | 18464 | else |
b9502d3f | 18465 | { |
48fbe735 | 18466 | const gdb_byte *buffer = reader->buffer; |
9c541725 PA |
18467 | sect_offset off = dwarf2_get_ref_die_offset (&attr); |
18468 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); | |
b9502d3f WN |
18469 | |
18470 | if (sibling_ptr < info_ptr) | |
b98664d3 | 18471 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 KS |
18472 | else if (sibling_ptr > reader->buffer_end) |
18473 | dwarf2_section_buffer_overflow_complaint (reader->die_section); | |
b9502d3f | 18474 | else |
48fbe735 | 18475 | sibling = sibling_ptr; |
b9502d3f | 18476 | } |
c906108c | 18477 | break; |
fa4028e9 | 18478 | case DW_AT_byte_size: |
48fbe735 | 18479 | has_byte_size = 1; |
fa4028e9 | 18480 | break; |
ff908ebf | 18481 | case DW_AT_const_value: |
48fbe735 | 18482 | has_const_value = 1; |
ff908ebf | 18483 | break; |
68511cec CES |
18484 | case DW_AT_calling_convention: |
18485 | /* DWARF doesn't provide a way to identify a program's source-level | |
18486 | entry point. DW_AT_calling_convention attributes are only meant | |
18487 | to describe functions' calling conventions. | |
18488 | ||
18489 | However, because it's a necessary piece of information in | |
0c1b455e TT |
18490 | Fortran, and before DWARF 4 DW_CC_program was the only |
18491 | piece of debugging information whose definition refers to | |
18492 | a 'main program' at all, several compilers marked Fortran | |
18493 | main programs with DW_CC_program --- even when those | |
18494 | functions use the standard calling conventions. | |
18495 | ||
18496 | Although DWARF now specifies a way to provide this | |
18497 | information, we support this practice for backward | |
18498 | compatibility. */ | |
68511cec | 18499 | if (DW_UNSND (&attr) == DW_CC_program |
0c1b455e | 18500 | && cu->language == language_fortran) |
48fbe735 | 18501 | main_subprogram = 1; |
68511cec | 18502 | break; |
481860b3 GB |
18503 | case DW_AT_inline: |
18504 | if (DW_UNSND (&attr) == DW_INL_inlined | |
18505 | || DW_UNSND (&attr) == DW_INL_declared_inlined) | |
48fbe735 | 18506 | may_be_inlined = 1; |
481860b3 | 18507 | break; |
95554aad TT |
18508 | |
18509 | case DW_AT_import: | |
48fbe735 | 18510 | if (tag == DW_TAG_imported_unit) |
36586728 | 18511 | { |
48fbe735 YQ |
18512 | d.sect_off = dwarf2_get_ref_die_offset (&attr); |
18513 | is_dwz = (attr.form == DW_FORM_GNU_ref_alt | |
36586728 TT |
18514 | || cu->per_cu->is_dwz); |
18515 | } | |
95554aad TT |
18516 | break; |
18517 | ||
0c1b455e | 18518 | case DW_AT_main_subprogram: |
48fbe735 | 18519 | main_subprogram = DW_UNSND (&attr); |
0c1b455e TT |
18520 | break; |
18521 | ||
c906108c SS |
18522 | default: |
18523 | break; | |
18524 | } | |
18525 | } | |
18526 | ||
91da1414 | 18527 | if (high_pc_relative) |
48fbe735 | 18528 | highpc += lowpc; |
91da1414 | 18529 | |
9373cf26 JK |
18530 | if (has_low_pc_attr && has_high_pc_attr) |
18531 | { | |
18532 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
18533 | eliminate duplicate copies of functions and vtables and such. | |
18534 | The linker will arbitrarily choose one and discard the others. | |
18535 | The AT_*_pc values for such functions refer to local labels in | |
18536 | these sections. If the section from that file was discarded, the | |
18537 | labels are not in the output, so the relocs get a value of 0. | |
18538 | If this is a discarded function, mark the pc bounds as invalid, | |
18539 | so that GDB will ignore it. */ | |
48fbe735 | 18540 | if (lowpc == 0 && !dwarf2_per_objfile->has_section_at_zero) |
9373cf26 | 18541 | { |
48fbe735 | 18542 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
bb5ed363 | 18543 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 | 18544 | |
b98664d3 | 18545 | complaint (_("DW_AT_low_pc %s is zero " |
9d8780f0 | 18546 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
18547 | paddress (gdbarch, lowpc), |
18548 | sect_offset_str (sect_off), | |
9d8780f0 | 18549 | objfile_name (objfile)); |
9373cf26 JK |
18550 | } |
18551 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
48fbe735 | 18552 | else if (lowpc >= highpc) |
9373cf26 | 18553 | { |
48fbe735 | 18554 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
bb5ed363 | 18555 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 | 18556 | |
b98664d3 | 18557 | complaint (_("DW_AT_low_pc %s is not < DW_AT_high_pc %s " |
9d8780f0 | 18558 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
18559 | paddress (gdbarch, lowpc), |
18560 | paddress (gdbarch, highpc), | |
18561 | sect_offset_str (sect_off), | |
9c541725 | 18562 | objfile_name (objfile)); |
9373cf26 JK |
18563 | } |
18564 | else | |
48fbe735 | 18565 | has_pc_info = 1; |
9373cf26 | 18566 | } |
85cbf3d3 | 18567 | |
c906108c SS |
18568 | return info_ptr; |
18569 | } | |
18570 | ||
72bf9492 DJ |
18571 | /* Find a cached partial DIE at OFFSET in CU. */ |
18572 | ||
d590ff25 YQ |
18573 | struct partial_die_info * |
18574 | dwarf2_cu::find_partial_die (sect_offset sect_off) | |
72bf9492 DJ |
18575 | { |
18576 | struct partial_die_info *lookup_die = NULL; | |
6f06d47b | 18577 | struct partial_die_info part_die (sect_off); |
72bf9492 | 18578 | |
9a3c8263 | 18579 | lookup_die = ((struct partial_die_info *) |
d590ff25 | 18580 | htab_find_with_hash (partial_dies, &part_die, |
9c541725 | 18581 | to_underlying (sect_off))); |
72bf9492 | 18582 | |
72bf9492 DJ |
18583 | return lookup_die; |
18584 | } | |
18585 | ||
348e048f DE |
18586 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
18587 | except in the case of .debug_types DIEs which do not reference | |
18588 | outside their CU (they do however referencing other types via | |
55f1336d | 18589 | DW_FORM_ref_sig8). */ |
72bf9492 DJ |
18590 | |
18591 | static struct partial_die_info * | |
9c541725 | 18592 | find_partial_die (sect_offset sect_off, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 18593 | { |
518817b3 SM |
18594 | struct dwarf2_per_objfile *dwarf2_per_objfile |
18595 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 18596 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
5afb4e99 DJ |
18597 | struct dwarf2_per_cu_data *per_cu = NULL; |
18598 | struct partial_die_info *pd = NULL; | |
72bf9492 | 18599 | |
36586728 | 18600 | if (offset_in_dwz == cu->per_cu->is_dwz |
9c541725 | 18601 | && offset_in_cu_p (&cu->header, sect_off)) |
5afb4e99 | 18602 | { |
d590ff25 | 18603 | pd = cu->find_partial_die (sect_off); |
5afb4e99 DJ |
18604 | if (pd != NULL) |
18605 | return pd; | |
0d99eb77 DE |
18606 | /* We missed recording what we needed. |
18607 | Load all dies and try again. */ | |
18608 | per_cu = cu->per_cu; | |
5afb4e99 | 18609 | } |
0d99eb77 DE |
18610 | else |
18611 | { | |
18612 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 18613 | if (cu->per_cu->is_debug_types) |
0d99eb77 | 18614 | { |
9d8780f0 SM |
18615 | error (_("Dwarf Error: Type Unit at offset %s contains" |
18616 | " external reference to offset %s [in module %s].\n"), | |
18617 | sect_offset_str (cu->header.sect_off), sect_offset_str (sect_off), | |
0d99eb77 DE |
18618 | bfd_get_filename (objfile->obfd)); |
18619 | } | |
9c541725 | 18620 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
ed2dc618 | 18621 | dwarf2_per_objfile); |
72bf9492 | 18622 | |
0d99eb77 DE |
18623 | if (per_cu->cu == NULL || per_cu->cu->partial_dies == NULL) |
18624 | load_partial_comp_unit (per_cu); | |
ae038cb0 | 18625 | |
0d99eb77 | 18626 | per_cu->cu->last_used = 0; |
d590ff25 | 18627 | pd = per_cu->cu->find_partial_die (sect_off); |
0d99eb77 | 18628 | } |
5afb4e99 | 18629 | |
dee91e82 DE |
18630 | /* If we didn't find it, and not all dies have been loaded, |
18631 | load them all and try again. */ | |
18632 | ||
5afb4e99 DJ |
18633 | if (pd == NULL && per_cu->load_all_dies == 0) |
18634 | { | |
5afb4e99 | 18635 | per_cu->load_all_dies = 1; |
fd820528 DE |
18636 | |
18637 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
18638 | THIS_CU->cu may already be in use. So we can't just free it and | |
18639 | replace its DIEs with the ones we read in. Instead, we leave those | |
18640 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
18641 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
18642 | set. */ | |
dee91e82 | 18643 | load_partial_comp_unit (per_cu); |
5afb4e99 | 18644 | |
d590ff25 | 18645 | pd = per_cu->cu->find_partial_die (sect_off); |
5afb4e99 DJ |
18646 | } |
18647 | ||
18648 | if (pd == NULL) | |
18649 | internal_error (__FILE__, __LINE__, | |
9d8780f0 | 18650 | _("could not find partial DIE %s " |
3e43a32a | 18651 | "in cache [from module %s]\n"), |
9d8780f0 | 18652 | sect_offset_str (sect_off), bfd_get_filename (objfile->obfd)); |
5afb4e99 | 18653 | return pd; |
72bf9492 DJ |
18654 | } |
18655 | ||
abc72ce4 DE |
18656 | /* See if we can figure out if the class lives in a namespace. We do |
18657 | this by looking for a member function; its demangled name will | |
18658 | contain namespace info, if there is any. */ | |
18659 | ||
18660 | static void | |
18661 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
18662 | struct dwarf2_cu *cu) | |
18663 | { | |
18664 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
18665 | what template types look like, because the demangler | |
18666 | frequently doesn't give the same name as the debug info. We | |
18667 | could fix this by only using the demangled name to get the | |
18668 | prefix (but see comment in read_structure_type). */ | |
18669 | ||
18670 | struct partial_die_info *real_pdi; | |
18671 | struct partial_die_info *child_pdi; | |
18672 | ||
18673 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
18674 | we should not do this. We'll prepend the parent's fully qualified | |
18675 | name when we create the partial symbol. */ | |
18676 | ||
18677 | real_pdi = struct_pdi; | |
18678 | while (real_pdi->has_specification) | |
36586728 TT |
18679 | real_pdi = find_partial_die (real_pdi->spec_offset, |
18680 | real_pdi->spec_is_dwz, cu); | |
abc72ce4 DE |
18681 | |
18682 | if (real_pdi->die_parent != NULL) | |
18683 | return; | |
18684 | ||
18685 | for (child_pdi = struct_pdi->die_child; | |
18686 | child_pdi != NULL; | |
18687 | child_pdi = child_pdi->die_sibling) | |
18688 | { | |
18689 | if (child_pdi->tag == DW_TAG_subprogram | |
18690 | && child_pdi->linkage_name != NULL) | |
18691 | { | |
18692 | char *actual_class_name | |
18693 | = language_class_name_from_physname (cu->language_defn, | |
18694 | child_pdi->linkage_name); | |
18695 | if (actual_class_name != NULL) | |
18696 | { | |
518817b3 | 18697 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
abc72ce4 | 18698 | struct_pdi->name |
224c3ddb | 18699 | = ((const char *) |
e3b94546 | 18700 | obstack_copy0 (&objfile->per_bfd->storage_obstack, |
224c3ddb SM |
18701 | actual_class_name, |
18702 | strlen (actual_class_name))); | |
abc72ce4 DE |
18703 | xfree (actual_class_name); |
18704 | } | |
18705 | break; | |
18706 | } | |
18707 | } | |
18708 | } | |
18709 | ||
52356b79 YQ |
18710 | void |
18711 | partial_die_info::fixup (struct dwarf2_cu *cu) | |
72bf9492 | 18712 | { |
abc72ce4 DE |
18713 | /* Once we've fixed up a die, there's no point in doing so again. |
18714 | This also avoids a memory leak if we were to call | |
18715 | guess_partial_die_structure_name multiple times. */ | |
52356b79 | 18716 | if (fixup_called) |
abc72ce4 DE |
18717 | return; |
18718 | ||
72bf9492 DJ |
18719 | /* If we found a reference attribute and the DIE has no name, try |
18720 | to find a name in the referred to DIE. */ | |
18721 | ||
52356b79 | 18722 | if (name == NULL && has_specification) |
72bf9492 DJ |
18723 | { |
18724 | struct partial_die_info *spec_die; | |
72bf9492 | 18725 | |
52356b79 | 18726 | spec_die = find_partial_die (spec_offset, spec_is_dwz, cu); |
72bf9492 | 18727 | |
52356b79 | 18728 | spec_die->fixup (cu); |
72bf9492 DJ |
18729 | |
18730 | if (spec_die->name) | |
18731 | { | |
52356b79 | 18732 | name = spec_die->name; |
72bf9492 DJ |
18733 | |
18734 | /* Copy DW_AT_external attribute if it is set. */ | |
18735 | if (spec_die->is_external) | |
52356b79 | 18736 | is_external = spec_die->is_external; |
72bf9492 DJ |
18737 | } |
18738 | } | |
18739 | ||
18740 | /* Set default names for some unnamed DIEs. */ | |
72bf9492 | 18741 | |
52356b79 YQ |
18742 | if (name == NULL && tag == DW_TAG_namespace) |
18743 | name = CP_ANONYMOUS_NAMESPACE_STR; | |
72bf9492 | 18744 | |
abc72ce4 DE |
18745 | /* If there is no parent die to provide a namespace, and there are |
18746 | children, see if we can determine the namespace from their linkage | |
122d1940 | 18747 | name. */ |
abc72ce4 | 18748 | if (cu->language == language_cplus |
518817b3 SM |
18749 | && !VEC_empty (dwarf2_section_info_def, |
18750 | cu->per_cu->dwarf2_per_objfile->types) | |
52356b79 YQ |
18751 | && die_parent == NULL |
18752 | && has_children | |
18753 | && (tag == DW_TAG_class_type | |
18754 | || tag == DW_TAG_structure_type | |
18755 | || tag == DW_TAG_union_type)) | |
18756 | guess_partial_die_structure_name (this, cu); | |
abc72ce4 | 18757 | |
53832f31 TT |
18758 | /* GCC might emit a nameless struct or union that has a linkage |
18759 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
52356b79 YQ |
18760 | if (name == NULL |
18761 | && (tag == DW_TAG_class_type | |
18762 | || tag == DW_TAG_interface_type | |
18763 | || tag == DW_TAG_structure_type | |
18764 | || tag == DW_TAG_union_type) | |
18765 | && linkage_name != NULL) | |
53832f31 TT |
18766 | { |
18767 | char *demangled; | |
18768 | ||
52356b79 | 18769 | demangled = gdb_demangle (linkage_name, DMGL_TYPES); |
53832f31 TT |
18770 | if (demangled) |
18771 | { | |
96408a79 SA |
18772 | const char *base; |
18773 | ||
18774 | /* Strip any leading namespaces/classes, keep only the base name. | |
18775 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
18776 | base = strrchr (demangled, ':'); | |
18777 | if (base && base > demangled && base[-1] == ':') | |
18778 | base++; | |
18779 | else | |
18780 | base = demangled; | |
18781 | ||
518817b3 | 18782 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
52356b79 | 18783 | name |
224c3ddb | 18784 | = ((const char *) |
e3b94546 | 18785 | obstack_copy0 (&objfile->per_bfd->storage_obstack, |
224c3ddb | 18786 | base, strlen (base))); |
53832f31 TT |
18787 | xfree (demangled); |
18788 | } | |
18789 | } | |
18790 | ||
52356b79 | 18791 | fixup_called = 1; |
72bf9492 DJ |
18792 | } |
18793 | ||
a8329558 | 18794 | /* Read an attribute value described by an attribute form. */ |
c906108c | 18795 | |
d521ce57 | 18796 | static const gdb_byte * |
dee91e82 DE |
18797 | read_attribute_value (const struct die_reader_specs *reader, |
18798 | struct attribute *attr, unsigned form, | |
43988095 | 18799 | LONGEST implicit_const, const gdb_byte *info_ptr) |
c906108c | 18800 | { |
dee91e82 | 18801 | struct dwarf2_cu *cu = reader->cu; |
518817b3 SM |
18802 | struct dwarf2_per_objfile *dwarf2_per_objfile |
18803 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 18804 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 18805 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
dee91e82 | 18806 | bfd *abfd = reader->abfd; |
e7c27a73 | 18807 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
18808 | unsigned int bytes_read; |
18809 | struct dwarf_block *blk; | |
18810 | ||
aead7601 | 18811 | attr->form = (enum dwarf_form) form; |
a8329558 | 18812 | switch (form) |
c906108c | 18813 | { |
c906108c | 18814 | case DW_FORM_ref_addr: |
ae411497 | 18815 | if (cu->header.version == 2) |
4568ecf9 | 18816 | DW_UNSND (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
ae411497 | 18817 | else |
4568ecf9 DE |
18818 | DW_UNSND (attr) = read_offset (abfd, info_ptr, |
18819 | &cu->header, &bytes_read); | |
ae411497 TT |
18820 | info_ptr += bytes_read; |
18821 | break; | |
36586728 TT |
18822 | case DW_FORM_GNU_ref_alt: |
18823 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
18824 | info_ptr += bytes_read; | |
18825 | break; | |
ae411497 | 18826 | case DW_FORM_addr: |
e7c27a73 | 18827 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
3e29f34a | 18828 | DW_ADDR (attr) = gdbarch_adjust_dwarf2_addr (gdbarch, DW_ADDR (attr)); |
107d2387 | 18829 | info_ptr += bytes_read; |
c906108c SS |
18830 | break; |
18831 | case DW_FORM_block2: | |
7b5a2f43 | 18832 | blk = dwarf_alloc_block (cu); |
c906108c SS |
18833 | blk->size = read_2_bytes (abfd, info_ptr); |
18834 | info_ptr += 2; | |
18835 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
18836 | info_ptr += blk->size; | |
18837 | DW_BLOCK (attr) = blk; | |
18838 | break; | |
18839 | case DW_FORM_block4: | |
7b5a2f43 | 18840 | blk = dwarf_alloc_block (cu); |
c906108c SS |
18841 | blk->size = read_4_bytes (abfd, info_ptr); |
18842 | info_ptr += 4; | |
18843 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
18844 | info_ptr += blk->size; | |
18845 | DW_BLOCK (attr) = blk; | |
18846 | break; | |
18847 | case DW_FORM_data2: | |
18848 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
18849 | info_ptr += 2; | |
18850 | break; | |
18851 | case DW_FORM_data4: | |
18852 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
18853 | info_ptr += 4; | |
18854 | break; | |
18855 | case DW_FORM_data8: | |
18856 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
18857 | info_ptr += 8; | |
18858 | break; | |
0224619f JK |
18859 | case DW_FORM_data16: |
18860 | blk = dwarf_alloc_block (cu); | |
18861 | blk->size = 16; | |
18862 | blk->data = read_n_bytes (abfd, info_ptr, 16); | |
18863 | info_ptr += 16; | |
18864 | DW_BLOCK (attr) = blk; | |
18865 | break; | |
2dc7f7b3 TT |
18866 | case DW_FORM_sec_offset: |
18867 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
18868 | info_ptr += bytes_read; | |
18869 | break; | |
c906108c | 18870 | case DW_FORM_string: |
9b1c24c8 | 18871 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 18872 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
18873 | info_ptr += bytes_read; |
18874 | break; | |
4bdf3d34 | 18875 | case DW_FORM_strp: |
36586728 TT |
18876 | if (!cu->per_cu->is_dwz) |
18877 | { | |
ed2dc618 SM |
18878 | DW_STRING (attr) = read_indirect_string (dwarf2_per_objfile, |
18879 | abfd, info_ptr, cu_header, | |
36586728 TT |
18880 | &bytes_read); |
18881 | DW_STRING_IS_CANONICAL (attr) = 0; | |
18882 | info_ptr += bytes_read; | |
18883 | break; | |
18884 | } | |
18885 | /* FALLTHROUGH */ | |
43988095 JK |
18886 | case DW_FORM_line_strp: |
18887 | if (!cu->per_cu->is_dwz) | |
18888 | { | |
ed2dc618 SM |
18889 | DW_STRING (attr) = read_indirect_line_string (dwarf2_per_objfile, |
18890 | abfd, info_ptr, | |
43988095 JK |
18891 | cu_header, &bytes_read); |
18892 | DW_STRING_IS_CANONICAL (attr) = 0; | |
18893 | info_ptr += bytes_read; | |
18894 | break; | |
18895 | } | |
18896 | /* FALLTHROUGH */ | |
36586728 TT |
18897 | case DW_FORM_GNU_strp_alt: |
18898 | { | |
ed2dc618 | 18899 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
36586728 TT |
18900 | LONGEST str_offset = read_offset (abfd, info_ptr, cu_header, |
18901 | &bytes_read); | |
18902 | ||
ed2dc618 SM |
18903 | DW_STRING (attr) = read_indirect_string_from_dwz (objfile, |
18904 | dwz, str_offset); | |
36586728 TT |
18905 | DW_STRING_IS_CANONICAL (attr) = 0; |
18906 | info_ptr += bytes_read; | |
18907 | } | |
4bdf3d34 | 18908 | break; |
2dc7f7b3 | 18909 | case DW_FORM_exprloc: |
c906108c | 18910 | case DW_FORM_block: |
7b5a2f43 | 18911 | blk = dwarf_alloc_block (cu); |
c906108c SS |
18912 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
18913 | info_ptr += bytes_read; | |
18914 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
18915 | info_ptr += blk->size; | |
18916 | DW_BLOCK (attr) = blk; | |
18917 | break; | |
18918 | case DW_FORM_block1: | |
7b5a2f43 | 18919 | blk = dwarf_alloc_block (cu); |
c906108c SS |
18920 | blk->size = read_1_byte (abfd, info_ptr); |
18921 | info_ptr += 1; | |
18922 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
18923 | info_ptr += blk->size; | |
18924 | DW_BLOCK (attr) = blk; | |
18925 | break; | |
18926 | case DW_FORM_data1: | |
18927 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
18928 | info_ptr += 1; | |
18929 | break; | |
18930 | case DW_FORM_flag: | |
18931 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
18932 | info_ptr += 1; | |
18933 | break; | |
2dc7f7b3 TT |
18934 | case DW_FORM_flag_present: |
18935 | DW_UNSND (attr) = 1; | |
18936 | break; | |
c906108c SS |
18937 | case DW_FORM_sdata: |
18938 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
18939 | info_ptr += bytes_read; | |
18940 | break; | |
18941 | case DW_FORM_udata: | |
18942 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
18943 | info_ptr += bytes_read; | |
18944 | break; | |
18945 | case DW_FORM_ref1: | |
9c541725 | 18946 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 18947 | + read_1_byte (abfd, info_ptr)); |
c906108c SS |
18948 | info_ptr += 1; |
18949 | break; | |
18950 | case DW_FORM_ref2: | |
9c541725 | 18951 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 18952 | + read_2_bytes (abfd, info_ptr)); |
c906108c SS |
18953 | info_ptr += 2; |
18954 | break; | |
18955 | case DW_FORM_ref4: | |
9c541725 | 18956 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 18957 | + read_4_bytes (abfd, info_ptr)); |
c906108c SS |
18958 | info_ptr += 4; |
18959 | break; | |
613e1657 | 18960 | case DW_FORM_ref8: |
9c541725 | 18961 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 18962 | + read_8_bytes (abfd, info_ptr)); |
613e1657 KB |
18963 | info_ptr += 8; |
18964 | break; | |
55f1336d | 18965 | case DW_FORM_ref_sig8: |
ac9ec31b | 18966 | DW_SIGNATURE (attr) = read_8_bytes (abfd, info_ptr); |
348e048f DE |
18967 | info_ptr += 8; |
18968 | break; | |
c906108c | 18969 | case DW_FORM_ref_udata: |
9c541725 | 18970 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 18971 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); |
c906108c SS |
18972 | info_ptr += bytes_read; |
18973 | break; | |
c906108c | 18974 | case DW_FORM_indirect: |
a8329558 KW |
18975 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
18976 | info_ptr += bytes_read; | |
43988095 JK |
18977 | if (form == DW_FORM_implicit_const) |
18978 | { | |
18979 | implicit_const = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
18980 | info_ptr += bytes_read; | |
18981 | } | |
18982 | info_ptr = read_attribute_value (reader, attr, form, implicit_const, | |
18983 | info_ptr); | |
18984 | break; | |
18985 | case DW_FORM_implicit_const: | |
18986 | DW_SND (attr) = implicit_const; | |
a8329558 | 18987 | break; |
3019eac3 DE |
18988 | case DW_FORM_GNU_addr_index: |
18989 | if (reader->dwo_file == NULL) | |
18990 | { | |
18991 | /* For now flag a hard error. | |
18992 | Later we can turn this into a complaint. */ | |
18993 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
18994 | dwarf_form_name (form), | |
18995 | bfd_get_filename (abfd)); | |
18996 | } | |
18997 | DW_ADDR (attr) = read_addr_index_from_leb128 (cu, info_ptr, &bytes_read); | |
18998 | info_ptr += bytes_read; | |
18999 | break; | |
19000 | case DW_FORM_GNU_str_index: | |
19001 | if (reader->dwo_file == NULL) | |
19002 | { | |
19003 | /* For now flag a hard error. | |
19004 | Later we can turn this into a complaint if warranted. */ | |
19005 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
19006 | dwarf_form_name (form), | |
19007 | bfd_get_filename (abfd)); | |
19008 | } | |
19009 | { | |
19010 | ULONGEST str_index = | |
19011 | read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
19012 | ||
342587c4 | 19013 | DW_STRING (attr) = read_str_index (reader, str_index); |
3019eac3 DE |
19014 | DW_STRING_IS_CANONICAL (attr) = 0; |
19015 | info_ptr += bytes_read; | |
19016 | } | |
19017 | break; | |
c906108c | 19018 | default: |
8a3fe4f8 | 19019 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
19020 | dwarf_form_name (form), |
19021 | bfd_get_filename (abfd)); | |
c906108c | 19022 | } |
28e94949 | 19023 | |
36586728 | 19024 | /* Super hack. */ |
7771576e | 19025 | if (cu->per_cu->is_dwz && attr_form_is_ref (attr)) |
36586728 TT |
19026 | attr->form = DW_FORM_GNU_ref_alt; |
19027 | ||
28e94949 JB |
19028 | /* We have seen instances where the compiler tried to emit a byte |
19029 | size attribute of -1 which ended up being encoded as an unsigned | |
19030 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
19031 | an object of this size seems pretty unlikely so we can relatively | |
19032 | safely treat these cases as if the size attribute was invalid and | |
19033 | treat them as zero by default. */ | |
19034 | if (attr->name == DW_AT_byte_size | |
19035 | && form == DW_FORM_data4 | |
19036 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
19037 | { |
19038 | complaint | |
b98664d3 | 19039 | (_("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
43bbcdc2 | 19040 | hex_string (DW_UNSND (attr))); |
01c66ae6 JB |
19041 | DW_UNSND (attr) = 0; |
19042 | } | |
28e94949 | 19043 | |
c906108c SS |
19044 | return info_ptr; |
19045 | } | |
19046 | ||
a8329558 KW |
19047 | /* Read an attribute described by an abbreviated attribute. */ |
19048 | ||
d521ce57 | 19049 | static const gdb_byte * |
dee91e82 DE |
19050 | read_attribute (const struct die_reader_specs *reader, |
19051 | struct attribute *attr, struct attr_abbrev *abbrev, | |
d521ce57 | 19052 | const gdb_byte *info_ptr) |
a8329558 KW |
19053 | { |
19054 | attr->name = abbrev->name; | |
43988095 JK |
19055 | return read_attribute_value (reader, attr, abbrev->form, |
19056 | abbrev->implicit_const, info_ptr); | |
a8329558 KW |
19057 | } |
19058 | ||
0963b4bd | 19059 | /* Read dwarf information from a buffer. */ |
c906108c SS |
19060 | |
19061 | static unsigned int | |
a1855c1d | 19062 | read_1_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 19063 | { |
fe1b8b76 | 19064 | return bfd_get_8 (abfd, buf); |
c906108c SS |
19065 | } |
19066 | ||
19067 | static int | |
a1855c1d | 19068 | read_1_signed_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 19069 | { |
fe1b8b76 | 19070 | return bfd_get_signed_8 (abfd, buf); |
c906108c SS |
19071 | } |
19072 | ||
19073 | static unsigned int | |
a1855c1d | 19074 | read_2_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 19075 | { |
fe1b8b76 | 19076 | return bfd_get_16 (abfd, buf); |
c906108c SS |
19077 | } |
19078 | ||
21ae7a4d | 19079 | static int |
a1855c1d | 19080 | read_2_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
19081 | { |
19082 | return bfd_get_signed_16 (abfd, buf); | |
19083 | } | |
19084 | ||
c906108c | 19085 | static unsigned int |
a1855c1d | 19086 | read_4_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 19087 | { |
fe1b8b76 | 19088 | return bfd_get_32 (abfd, buf); |
c906108c SS |
19089 | } |
19090 | ||
21ae7a4d | 19091 | static int |
a1855c1d | 19092 | read_4_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
19093 | { |
19094 | return bfd_get_signed_32 (abfd, buf); | |
19095 | } | |
19096 | ||
93311388 | 19097 | static ULONGEST |
a1855c1d | 19098 | read_8_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 19099 | { |
fe1b8b76 | 19100 | return bfd_get_64 (abfd, buf); |
c906108c SS |
19101 | } |
19102 | ||
19103 | static CORE_ADDR | |
d521ce57 | 19104 | read_address (bfd *abfd, const gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 19105 | unsigned int *bytes_read) |
c906108c | 19106 | { |
e7c27a73 | 19107 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
19108 | CORE_ADDR retval = 0; |
19109 | ||
107d2387 | 19110 | if (cu_header->signed_addr_p) |
c906108c | 19111 | { |
107d2387 AC |
19112 | switch (cu_header->addr_size) |
19113 | { | |
19114 | case 2: | |
fe1b8b76 | 19115 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
19116 | break; |
19117 | case 4: | |
fe1b8b76 | 19118 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
19119 | break; |
19120 | case 8: | |
fe1b8b76 | 19121 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
19122 | break; |
19123 | default: | |
8e65ff28 | 19124 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 19125 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 19126 | bfd_get_filename (abfd)); |
107d2387 AC |
19127 | } |
19128 | } | |
19129 | else | |
19130 | { | |
19131 | switch (cu_header->addr_size) | |
19132 | { | |
19133 | case 2: | |
fe1b8b76 | 19134 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
19135 | break; |
19136 | case 4: | |
fe1b8b76 | 19137 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
19138 | break; |
19139 | case 8: | |
fe1b8b76 | 19140 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
19141 | break; |
19142 | default: | |
8e65ff28 | 19143 | internal_error (__FILE__, __LINE__, |
a73c6dcd MS |
19144 | _("read_address: bad switch, " |
19145 | "unsigned [in module %s]"), | |
659b0389 | 19146 | bfd_get_filename (abfd)); |
107d2387 | 19147 | } |
c906108c | 19148 | } |
64367e0a | 19149 | |
107d2387 AC |
19150 | *bytes_read = cu_header->addr_size; |
19151 | return retval; | |
c906108c SS |
19152 | } |
19153 | ||
f7ef9339 | 19154 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
19155 | specification allows the initial length to take up either 4 bytes |
19156 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
19157 | bytes describe the length and all offsets will be 8 bytes in length | |
19158 | instead of 4. | |
19159 | ||
f7ef9339 KB |
19160 | An older, non-standard 64-bit format is also handled by this |
19161 | function. The older format in question stores the initial length | |
19162 | as an 8-byte quantity without an escape value. Lengths greater | |
19163 | than 2^32 aren't very common which means that the initial 4 bytes | |
19164 | is almost always zero. Since a length value of zero doesn't make | |
19165 | sense for the 32-bit format, this initial zero can be considered to | |
19166 | be an escape value which indicates the presence of the older 64-bit | |
19167 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
19168 | greater than 4GB. If it becomes necessary to handle lengths |
19169 | somewhat larger than 4GB, we could allow other small values (such | |
19170 | as the non-sensical values of 1, 2, and 3) to also be used as | |
19171 | escape values indicating the presence of the old format. | |
f7ef9339 | 19172 | |
917c78fc MK |
19173 | The value returned via bytes_read should be used to increment the |
19174 | relevant pointer after calling read_initial_length(). | |
c764a876 | 19175 | |
613e1657 KB |
19176 | [ Note: read_initial_length() and read_offset() are based on the |
19177 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 19178 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
19179 | from: |
19180 | ||
f7ef9339 | 19181 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
6e70227d | 19182 | |
613e1657 KB |
19183 | This document is only a draft and is subject to change. (So beware.) |
19184 | ||
f7ef9339 | 19185 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
19186 | determined empirically by examining 64-bit ELF files produced by |
19187 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
19188 | |
19189 | - Kevin, July 16, 2002 | |
613e1657 KB |
19190 | ] */ |
19191 | ||
19192 | static LONGEST | |
d521ce57 | 19193 | read_initial_length (bfd *abfd, const gdb_byte *buf, unsigned int *bytes_read) |
613e1657 | 19194 | { |
fe1b8b76 | 19195 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 19196 | |
dd373385 | 19197 | if (length == 0xffffffff) |
613e1657 | 19198 | { |
fe1b8b76 | 19199 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 19200 | *bytes_read = 12; |
613e1657 | 19201 | } |
dd373385 | 19202 | else if (length == 0) |
f7ef9339 | 19203 | { |
dd373385 | 19204 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 19205 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 19206 | *bytes_read = 8; |
f7ef9339 | 19207 | } |
613e1657 KB |
19208 | else |
19209 | { | |
19210 | *bytes_read = 4; | |
613e1657 KB |
19211 | } |
19212 | ||
c764a876 DE |
19213 | return length; |
19214 | } | |
dd373385 | 19215 | |
c764a876 DE |
19216 | /* Cover function for read_initial_length. |
19217 | Returns the length of the object at BUF, and stores the size of the | |
19218 | initial length in *BYTES_READ and stores the size that offsets will be in | |
19219 | *OFFSET_SIZE. | |
19220 | If the initial length size is not equivalent to that specified in | |
19221 | CU_HEADER then issue a complaint. | |
19222 | This is useful when reading non-comp-unit headers. */ | |
dd373385 | 19223 | |
c764a876 | 19224 | static LONGEST |
d521ce57 | 19225 | read_checked_initial_length_and_offset (bfd *abfd, const gdb_byte *buf, |
c764a876 DE |
19226 | const struct comp_unit_head *cu_header, |
19227 | unsigned int *bytes_read, | |
19228 | unsigned int *offset_size) | |
19229 | { | |
19230 | LONGEST length = read_initial_length (abfd, buf, bytes_read); | |
19231 | ||
19232 | gdb_assert (cu_header->initial_length_size == 4 | |
19233 | || cu_header->initial_length_size == 8 | |
19234 | || cu_header->initial_length_size == 12); | |
19235 | ||
19236 | if (cu_header->initial_length_size != *bytes_read) | |
b98664d3 | 19237 | complaint (_("intermixed 32-bit and 64-bit DWARF sections")); |
dd373385 | 19238 | |
c764a876 | 19239 | *offset_size = (*bytes_read == 4) ? 4 : 8; |
dd373385 | 19240 | return length; |
613e1657 KB |
19241 | } |
19242 | ||
19243 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 19244 | given by cu_header->offset_size. */ |
613e1657 KB |
19245 | |
19246 | static LONGEST | |
d521ce57 TT |
19247 | read_offset (bfd *abfd, const gdb_byte *buf, |
19248 | const struct comp_unit_head *cu_header, | |
891d2f0b | 19249 | unsigned int *bytes_read) |
c764a876 DE |
19250 | { |
19251 | LONGEST offset = read_offset_1 (abfd, buf, cu_header->offset_size); | |
9a619af0 | 19252 | |
c764a876 DE |
19253 | *bytes_read = cu_header->offset_size; |
19254 | return offset; | |
19255 | } | |
19256 | ||
19257 | /* Read an offset from the data stream. */ | |
19258 | ||
19259 | static LONGEST | |
d521ce57 | 19260 | read_offset_1 (bfd *abfd, const gdb_byte *buf, unsigned int offset_size) |
613e1657 KB |
19261 | { |
19262 | LONGEST retval = 0; | |
19263 | ||
c764a876 | 19264 | switch (offset_size) |
613e1657 KB |
19265 | { |
19266 | case 4: | |
fe1b8b76 | 19267 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
19268 | break; |
19269 | case 8: | |
fe1b8b76 | 19270 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
19271 | break; |
19272 | default: | |
8e65ff28 | 19273 | internal_error (__FILE__, __LINE__, |
c764a876 | 19274 | _("read_offset_1: bad switch [in module %s]"), |
659b0389 | 19275 | bfd_get_filename (abfd)); |
613e1657 KB |
19276 | } |
19277 | ||
917c78fc | 19278 | return retval; |
613e1657 KB |
19279 | } |
19280 | ||
d521ce57 TT |
19281 | static const gdb_byte * |
19282 | read_n_bytes (bfd *abfd, const gdb_byte *buf, unsigned int size) | |
c906108c SS |
19283 | { |
19284 | /* If the size of a host char is 8 bits, we can return a pointer | |
19285 | to the buffer, otherwise we have to copy the data to a buffer | |
19286 | allocated on the temporary obstack. */ | |
4bdf3d34 | 19287 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 19288 | return buf; |
c906108c SS |
19289 | } |
19290 | ||
d521ce57 TT |
19291 | static const char * |
19292 | read_direct_string (bfd *abfd, const gdb_byte *buf, | |
19293 | unsigned int *bytes_read_ptr) | |
c906108c SS |
19294 | { |
19295 | /* If the size of a host char is 8 bits, we can return a pointer | |
19296 | to the string, otherwise we have to copy the string to a buffer | |
19297 | allocated on the temporary obstack. */ | |
4bdf3d34 | 19298 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
19299 | if (*buf == '\0') |
19300 | { | |
19301 | *bytes_read_ptr = 1; | |
19302 | return NULL; | |
19303 | } | |
d521ce57 TT |
19304 | *bytes_read_ptr = strlen ((const char *) buf) + 1; |
19305 | return (const char *) buf; | |
4bdf3d34 JJ |
19306 | } |
19307 | ||
43988095 JK |
19308 | /* Return pointer to string at section SECT offset STR_OFFSET with error |
19309 | reporting strings FORM_NAME and SECT_NAME. */ | |
19310 | ||
d521ce57 | 19311 | static const char * |
ed2dc618 SM |
19312 | read_indirect_string_at_offset_from (struct objfile *objfile, |
19313 | bfd *abfd, LONGEST str_offset, | |
43988095 JK |
19314 | struct dwarf2_section_info *sect, |
19315 | const char *form_name, | |
19316 | const char *sect_name) | |
19317 | { | |
ed2dc618 | 19318 | dwarf2_read_section (objfile, sect); |
43988095 JK |
19319 | if (sect->buffer == NULL) |
19320 | error (_("%s used without %s section [in module %s]"), | |
19321 | form_name, sect_name, bfd_get_filename (abfd)); | |
19322 | if (str_offset >= sect->size) | |
19323 | error (_("%s pointing outside of %s section [in module %s]"), | |
19324 | form_name, sect_name, bfd_get_filename (abfd)); | |
4bdf3d34 | 19325 | gdb_assert (HOST_CHAR_BIT == 8); |
43988095 | 19326 | if (sect->buffer[str_offset] == '\0') |
4bdf3d34 | 19327 | return NULL; |
43988095 JK |
19328 | return (const char *) (sect->buffer + str_offset); |
19329 | } | |
19330 | ||
19331 | /* Return pointer to string at .debug_str offset STR_OFFSET. */ | |
19332 | ||
19333 | static const char * | |
ed2dc618 SM |
19334 | read_indirect_string_at_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19335 | bfd *abfd, LONGEST str_offset) | |
43988095 | 19336 | { |
ed2dc618 SM |
19337 | return read_indirect_string_at_offset_from (dwarf2_per_objfile->objfile, |
19338 | abfd, str_offset, | |
43988095 JK |
19339 | &dwarf2_per_objfile->str, |
19340 | "DW_FORM_strp", ".debug_str"); | |
19341 | } | |
19342 | ||
19343 | /* Return pointer to string at .debug_line_str offset STR_OFFSET. */ | |
19344 | ||
19345 | static const char * | |
ed2dc618 SM |
19346 | read_indirect_line_string_at_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19347 | bfd *abfd, LONGEST str_offset) | |
43988095 | 19348 | { |
ed2dc618 SM |
19349 | return read_indirect_string_at_offset_from (dwarf2_per_objfile->objfile, |
19350 | abfd, str_offset, | |
43988095 JK |
19351 | &dwarf2_per_objfile->line_str, |
19352 | "DW_FORM_line_strp", | |
19353 | ".debug_line_str"); | |
c906108c SS |
19354 | } |
19355 | ||
36586728 TT |
19356 | /* Read a string at offset STR_OFFSET in the .debug_str section from |
19357 | the .dwz file DWZ. Throw an error if the offset is too large. If | |
19358 | the string consists of a single NUL byte, return NULL; otherwise | |
19359 | return a pointer to the string. */ | |
19360 | ||
d521ce57 | 19361 | static const char * |
ed2dc618 SM |
19362 | read_indirect_string_from_dwz (struct objfile *objfile, struct dwz_file *dwz, |
19363 | LONGEST str_offset) | |
36586728 | 19364 | { |
ed2dc618 | 19365 | dwarf2_read_section (objfile, &dwz->str); |
36586728 TT |
19366 | |
19367 | if (dwz->str.buffer == NULL) | |
19368 | error (_("DW_FORM_GNU_strp_alt used without .debug_str " | |
19369 | "section [in module %s]"), | |
19370 | bfd_get_filename (dwz->dwz_bfd)); | |
19371 | if (str_offset >= dwz->str.size) | |
19372 | error (_("DW_FORM_GNU_strp_alt pointing outside of " | |
19373 | ".debug_str section [in module %s]"), | |
19374 | bfd_get_filename (dwz->dwz_bfd)); | |
19375 | gdb_assert (HOST_CHAR_BIT == 8); | |
19376 | if (dwz->str.buffer[str_offset] == '\0') | |
19377 | return NULL; | |
d521ce57 | 19378 | return (const char *) (dwz->str.buffer + str_offset); |
36586728 TT |
19379 | } |
19380 | ||
43988095 JK |
19381 | /* Return pointer to string at .debug_str offset as read from BUF. |
19382 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
19383 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
19384 | ||
d521ce57 | 19385 | static const char * |
ed2dc618 SM |
19386 | read_indirect_string (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *abfd, |
19387 | const gdb_byte *buf, | |
cf2c3c16 TT |
19388 | const struct comp_unit_head *cu_header, |
19389 | unsigned int *bytes_read_ptr) | |
19390 | { | |
19391 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
19392 | ||
ed2dc618 | 19393 | return read_indirect_string_at_offset (dwarf2_per_objfile, abfd, str_offset); |
cf2c3c16 TT |
19394 | } |
19395 | ||
43988095 JK |
19396 | /* Return pointer to string at .debug_line_str offset as read from BUF. |
19397 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
19398 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
19399 | ||
19400 | static const char * | |
ed2dc618 SM |
19401 | read_indirect_line_string (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19402 | bfd *abfd, const gdb_byte *buf, | |
43988095 JK |
19403 | const struct comp_unit_head *cu_header, |
19404 | unsigned int *bytes_read_ptr) | |
19405 | { | |
19406 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
19407 | ||
ed2dc618 SM |
19408 | return read_indirect_line_string_at_offset (dwarf2_per_objfile, abfd, |
19409 | str_offset); | |
43988095 JK |
19410 | } |
19411 | ||
19412 | ULONGEST | |
d521ce57 | 19413 | read_unsigned_leb128 (bfd *abfd, const gdb_byte *buf, |
43988095 | 19414 | unsigned int *bytes_read_ptr) |
c906108c | 19415 | { |
12df843f | 19416 | ULONGEST result; |
ce5d95e1 | 19417 | unsigned int num_read; |
870f88f7 | 19418 | int shift; |
c906108c SS |
19419 | unsigned char byte; |
19420 | ||
19421 | result = 0; | |
19422 | shift = 0; | |
19423 | num_read = 0; | |
c906108c SS |
19424 | while (1) |
19425 | { | |
fe1b8b76 | 19426 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
19427 | buf++; |
19428 | num_read++; | |
12df843f | 19429 | result |= ((ULONGEST) (byte & 127) << shift); |
c906108c SS |
19430 | if ((byte & 128) == 0) |
19431 | { | |
19432 | break; | |
19433 | } | |
19434 | shift += 7; | |
19435 | } | |
19436 | *bytes_read_ptr = num_read; | |
19437 | return result; | |
19438 | } | |
19439 | ||
12df843f | 19440 | static LONGEST |
d521ce57 TT |
19441 | read_signed_leb128 (bfd *abfd, const gdb_byte *buf, |
19442 | unsigned int *bytes_read_ptr) | |
c906108c | 19443 | { |
12df843f | 19444 | LONGEST result; |
870f88f7 | 19445 | int shift, num_read; |
c906108c SS |
19446 | unsigned char byte; |
19447 | ||
19448 | result = 0; | |
19449 | shift = 0; | |
c906108c | 19450 | num_read = 0; |
c906108c SS |
19451 | while (1) |
19452 | { | |
fe1b8b76 | 19453 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
19454 | buf++; |
19455 | num_read++; | |
12df843f | 19456 | result |= ((LONGEST) (byte & 127) << shift); |
c906108c SS |
19457 | shift += 7; |
19458 | if ((byte & 128) == 0) | |
19459 | { | |
19460 | break; | |
19461 | } | |
19462 | } | |
77e0b926 | 19463 | if ((shift < 8 * sizeof (result)) && (byte & 0x40)) |
12df843f | 19464 | result |= -(((LONGEST) 1) << shift); |
c906108c SS |
19465 | *bytes_read_ptr = num_read; |
19466 | return result; | |
19467 | } | |
19468 | ||
3019eac3 DE |
19469 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
19470 | ADDR_BASE is the DW_AT_GNU_addr_base attribute or zero. | |
19471 | ADDR_SIZE is the size of addresses from the CU header. */ | |
19472 | ||
19473 | static CORE_ADDR | |
ed2dc618 SM |
19474 | read_addr_index_1 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19475 | unsigned int addr_index, ULONGEST addr_base, int addr_size) | |
3019eac3 DE |
19476 | { |
19477 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
19478 | bfd *abfd = objfile->obfd; | |
19479 | const gdb_byte *info_ptr; | |
19480 | ||
19481 | dwarf2_read_section (objfile, &dwarf2_per_objfile->addr); | |
19482 | if (dwarf2_per_objfile->addr.buffer == NULL) | |
19483 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), | |
4262abfb | 19484 | objfile_name (objfile)); |
3019eac3 DE |
19485 | if (addr_base + addr_index * addr_size >= dwarf2_per_objfile->addr.size) |
19486 | error (_("DW_FORM_addr_index pointing outside of " | |
19487 | ".debug_addr section [in module %s]"), | |
4262abfb | 19488 | objfile_name (objfile)); |
3019eac3 DE |
19489 | info_ptr = (dwarf2_per_objfile->addr.buffer |
19490 | + addr_base + addr_index * addr_size); | |
19491 | if (addr_size == 4) | |
19492 | return bfd_get_32 (abfd, info_ptr); | |
19493 | else | |
19494 | return bfd_get_64 (abfd, info_ptr); | |
19495 | } | |
19496 | ||
19497 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
19498 | ||
19499 | static CORE_ADDR | |
19500 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
19501 | { | |
518817b3 SM |
19502 | return read_addr_index_1 (cu->per_cu->dwarf2_per_objfile, addr_index, |
19503 | cu->addr_base, cu->header.addr_size); | |
3019eac3 DE |
19504 | } |
19505 | ||
19506 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
19507 | ||
19508 | static CORE_ADDR | |
d521ce57 | 19509 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, const gdb_byte *info_ptr, |
3019eac3 DE |
19510 | unsigned int *bytes_read) |
19511 | { | |
518817b3 | 19512 | bfd *abfd = cu->per_cu->dwarf2_per_objfile->objfile->obfd; |
3019eac3 DE |
19513 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); |
19514 | ||
19515 | return read_addr_index (cu, addr_index); | |
19516 | } | |
19517 | ||
19518 | /* Data structure to pass results from dwarf2_read_addr_index_reader | |
19519 | back to dwarf2_read_addr_index. */ | |
19520 | ||
19521 | struct dwarf2_read_addr_index_data | |
19522 | { | |
19523 | ULONGEST addr_base; | |
19524 | int addr_size; | |
19525 | }; | |
19526 | ||
19527 | /* die_reader_func for dwarf2_read_addr_index. */ | |
19528 | ||
19529 | static void | |
19530 | dwarf2_read_addr_index_reader (const struct die_reader_specs *reader, | |
d521ce57 | 19531 | const gdb_byte *info_ptr, |
3019eac3 DE |
19532 | struct die_info *comp_unit_die, |
19533 | int has_children, | |
19534 | void *data) | |
19535 | { | |
19536 | struct dwarf2_cu *cu = reader->cu; | |
19537 | struct dwarf2_read_addr_index_data *aidata = | |
19538 | (struct dwarf2_read_addr_index_data *) data; | |
19539 | ||
19540 | aidata->addr_base = cu->addr_base; | |
19541 | aidata->addr_size = cu->header.addr_size; | |
19542 | } | |
19543 | ||
19544 | /* Given an index in .debug_addr, fetch the value. | |
19545 | NOTE: This can be called during dwarf expression evaluation, | |
19546 | long after the debug information has been read, and thus per_cu->cu | |
19547 | may no longer exist. */ | |
19548 | ||
19549 | CORE_ADDR | |
19550 | dwarf2_read_addr_index (struct dwarf2_per_cu_data *per_cu, | |
19551 | unsigned int addr_index) | |
19552 | { | |
ed2dc618 | 19553 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
3019eac3 DE |
19554 | struct dwarf2_cu *cu = per_cu->cu; |
19555 | ULONGEST addr_base; | |
19556 | int addr_size; | |
19557 | ||
3019eac3 DE |
19558 | /* We need addr_base and addr_size. |
19559 | If we don't have PER_CU->cu, we have to get it. | |
19560 | Nasty, but the alternative is storing the needed info in PER_CU, | |
19561 | which at this point doesn't seem justified: it's not clear how frequently | |
19562 | it would get used and it would increase the size of every PER_CU. | |
19563 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
19564 | so we're not in uncharted territory here. | |
19565 | Alas we need to be a bit more complicated as addr_base is contained | |
19566 | in the DIE. | |
19567 | ||
19568 | We don't need to read the entire CU(/TU). | |
19569 | We just need the header and top level die. | |
a1b64ce1 | 19570 | |
3019eac3 | 19571 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 19572 | For now we skip this optimization. */ |
3019eac3 DE |
19573 | |
19574 | if (cu != NULL) | |
19575 | { | |
19576 | addr_base = cu->addr_base; | |
19577 | addr_size = cu->header.addr_size; | |
19578 | } | |
19579 | else | |
19580 | { | |
19581 | struct dwarf2_read_addr_index_data aidata; | |
19582 | ||
a1b64ce1 DE |
19583 | /* Note: We can't use init_cutu_and_read_dies_simple here, |
19584 | we need addr_base. */ | |
58f0c718 | 19585 | init_cutu_and_read_dies (per_cu, NULL, 0, 0, false, |
a1b64ce1 | 19586 | dwarf2_read_addr_index_reader, &aidata); |
3019eac3 DE |
19587 | addr_base = aidata.addr_base; |
19588 | addr_size = aidata.addr_size; | |
19589 | } | |
19590 | ||
ed2dc618 SM |
19591 | return read_addr_index_1 (dwarf2_per_objfile, addr_index, addr_base, |
19592 | addr_size); | |
3019eac3 DE |
19593 | } |
19594 | ||
57d63ce2 DE |
19595 | /* Given a DW_FORM_GNU_str_index, fetch the string. |
19596 | This is only used by the Fission support. */ | |
3019eac3 | 19597 | |
d521ce57 | 19598 | static const char * |
342587c4 | 19599 | read_str_index (const struct die_reader_specs *reader, ULONGEST str_index) |
3019eac3 | 19600 | { |
ed2dc618 | 19601 | struct dwarf2_cu *cu = reader->cu; |
518817b3 SM |
19602 | struct dwarf2_per_objfile *dwarf2_per_objfile |
19603 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 | 19604 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
c5164cbc | 19605 | const char *objf_name = objfile_name (objfile); |
3019eac3 | 19606 | bfd *abfd = objfile->obfd; |
73869dc2 DE |
19607 | struct dwarf2_section_info *str_section = &reader->dwo_file->sections.str; |
19608 | struct dwarf2_section_info *str_offsets_section = | |
19609 | &reader->dwo_file->sections.str_offsets; | |
d521ce57 | 19610 | const gdb_byte *info_ptr; |
3019eac3 | 19611 | ULONGEST str_offset; |
57d63ce2 | 19612 | static const char form_name[] = "DW_FORM_GNU_str_index"; |
3019eac3 | 19613 | |
73869dc2 DE |
19614 | dwarf2_read_section (objfile, str_section); |
19615 | dwarf2_read_section (objfile, str_offsets_section); | |
19616 | if (str_section->buffer == NULL) | |
57d63ce2 | 19617 | error (_("%s used without .debug_str.dwo section" |
9d8780f0 SM |
19618 | " in CU at offset %s [in module %s]"), |
19619 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 19620 | if (str_offsets_section->buffer == NULL) |
57d63ce2 | 19621 | error (_("%s used without .debug_str_offsets.dwo section" |
9d8780f0 SM |
19622 | " in CU at offset %s [in module %s]"), |
19623 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 19624 | if (str_index * cu->header.offset_size >= str_offsets_section->size) |
57d63ce2 | 19625 | error (_("%s pointing outside of .debug_str_offsets.dwo" |
9d8780f0 SM |
19626 | " section in CU at offset %s [in module %s]"), |
19627 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 19628 | info_ptr = (str_offsets_section->buffer |
3019eac3 DE |
19629 | + str_index * cu->header.offset_size); |
19630 | if (cu->header.offset_size == 4) | |
19631 | str_offset = bfd_get_32 (abfd, info_ptr); | |
19632 | else | |
19633 | str_offset = bfd_get_64 (abfd, info_ptr); | |
73869dc2 | 19634 | if (str_offset >= str_section->size) |
57d63ce2 | 19635 | error (_("Offset from %s pointing outside of" |
9d8780f0 SM |
19636 | " .debug_str.dwo section in CU at offset %s [in module %s]"), |
19637 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 19638 | return (const char *) (str_section->buffer + str_offset); |
3019eac3 DE |
19639 | } |
19640 | ||
3019eac3 DE |
19641 | /* Return the length of an LEB128 number in BUF. */ |
19642 | ||
19643 | static int | |
19644 | leb128_size (const gdb_byte *buf) | |
19645 | { | |
19646 | const gdb_byte *begin = buf; | |
19647 | gdb_byte byte; | |
19648 | ||
19649 | while (1) | |
19650 | { | |
19651 | byte = *buf++; | |
19652 | if ((byte & 128) == 0) | |
19653 | return buf - begin; | |
19654 | } | |
19655 | } | |
19656 | ||
c906108c | 19657 | static void |
e142c38c | 19658 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
19659 | { |
19660 | switch (lang) | |
19661 | { | |
19662 | case DW_LANG_C89: | |
76bee0cc | 19663 | case DW_LANG_C99: |
0cfd832f | 19664 | case DW_LANG_C11: |
c906108c | 19665 | case DW_LANG_C: |
d1be3247 | 19666 | case DW_LANG_UPC: |
e142c38c | 19667 | cu->language = language_c; |
c906108c | 19668 | break; |
9c37b5ae | 19669 | case DW_LANG_Java: |
c906108c | 19670 | case DW_LANG_C_plus_plus: |
0cfd832f MW |
19671 | case DW_LANG_C_plus_plus_11: |
19672 | case DW_LANG_C_plus_plus_14: | |
e142c38c | 19673 | cu->language = language_cplus; |
c906108c | 19674 | break; |
6aecb9c2 JB |
19675 | case DW_LANG_D: |
19676 | cu->language = language_d; | |
19677 | break; | |
c906108c SS |
19678 | case DW_LANG_Fortran77: |
19679 | case DW_LANG_Fortran90: | |
b21b22e0 | 19680 | case DW_LANG_Fortran95: |
f7de9aab MW |
19681 | case DW_LANG_Fortran03: |
19682 | case DW_LANG_Fortran08: | |
e142c38c | 19683 | cu->language = language_fortran; |
c906108c | 19684 | break; |
a766d390 DE |
19685 | case DW_LANG_Go: |
19686 | cu->language = language_go; | |
19687 | break; | |
c906108c | 19688 | case DW_LANG_Mips_Assembler: |
e142c38c | 19689 | cu->language = language_asm; |
c906108c SS |
19690 | break; |
19691 | case DW_LANG_Ada83: | |
8aaf0b47 | 19692 | case DW_LANG_Ada95: |
bc5f45f8 JB |
19693 | cu->language = language_ada; |
19694 | break; | |
72019c9c GM |
19695 | case DW_LANG_Modula2: |
19696 | cu->language = language_m2; | |
19697 | break; | |
fe8e67fd PM |
19698 | case DW_LANG_Pascal83: |
19699 | cu->language = language_pascal; | |
19700 | break; | |
22566fbd DJ |
19701 | case DW_LANG_ObjC: |
19702 | cu->language = language_objc; | |
19703 | break; | |
c44af4eb TT |
19704 | case DW_LANG_Rust: |
19705 | case DW_LANG_Rust_old: | |
19706 | cu->language = language_rust; | |
19707 | break; | |
c906108c SS |
19708 | case DW_LANG_Cobol74: |
19709 | case DW_LANG_Cobol85: | |
c906108c | 19710 | default: |
e142c38c | 19711 | cu->language = language_minimal; |
c906108c SS |
19712 | break; |
19713 | } | |
e142c38c | 19714 | cu->language_defn = language_def (cu->language); |
c906108c SS |
19715 | } |
19716 | ||
19717 | /* Return the named attribute or NULL if not there. */ | |
19718 | ||
19719 | static struct attribute * | |
e142c38c | 19720 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 19721 | { |
a48e046c | 19722 | for (;;) |
c906108c | 19723 | { |
a48e046c TT |
19724 | unsigned int i; |
19725 | struct attribute *spec = NULL; | |
19726 | ||
19727 | for (i = 0; i < die->num_attrs; ++i) | |
19728 | { | |
19729 | if (die->attrs[i].name == name) | |
19730 | return &die->attrs[i]; | |
19731 | if (die->attrs[i].name == DW_AT_specification | |
19732 | || die->attrs[i].name == DW_AT_abstract_origin) | |
19733 | spec = &die->attrs[i]; | |
19734 | } | |
19735 | ||
19736 | if (!spec) | |
19737 | break; | |
c906108c | 19738 | |
f2f0e013 | 19739 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 19740 | } |
c5aa993b | 19741 | |
c906108c SS |
19742 | return NULL; |
19743 | } | |
19744 | ||
348e048f DE |
19745 | /* Return the named attribute or NULL if not there, |
19746 | but do not follow DW_AT_specification, etc. | |
19747 | This is for use in contexts where we're reading .debug_types dies. | |
19748 | Following DW_AT_specification, DW_AT_abstract_origin will take us | |
19749 | back up the chain, and we want to go down. */ | |
19750 | ||
19751 | static struct attribute * | |
45e58e77 | 19752 | dwarf2_attr_no_follow (struct die_info *die, unsigned int name) |
348e048f DE |
19753 | { |
19754 | unsigned int i; | |
19755 | ||
19756 | for (i = 0; i < die->num_attrs; ++i) | |
19757 | if (die->attrs[i].name == name) | |
19758 | return &die->attrs[i]; | |
19759 | ||
19760 | return NULL; | |
19761 | } | |
19762 | ||
7d45c7c3 KB |
19763 | /* Return the string associated with a string-typed attribute, or NULL if it |
19764 | is either not found or is of an incorrect type. */ | |
19765 | ||
19766 | static const char * | |
19767 | dwarf2_string_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) | |
19768 | { | |
19769 | struct attribute *attr; | |
19770 | const char *str = NULL; | |
19771 | ||
19772 | attr = dwarf2_attr (die, name, cu); | |
19773 | ||
19774 | if (attr != NULL) | |
19775 | { | |
43988095 | 19776 | if (attr->form == DW_FORM_strp || attr->form == DW_FORM_line_strp |
b3340438 L |
19777 | || attr->form == DW_FORM_string |
19778 | || attr->form == DW_FORM_GNU_str_index | |
16eb6b2d | 19779 | || attr->form == DW_FORM_GNU_strp_alt) |
7d45c7c3 KB |
19780 | str = DW_STRING (attr); |
19781 | else | |
b98664d3 | 19782 | complaint (_("string type expected for attribute %s for " |
9d8780f0 SM |
19783 | "DIE at %s in module %s"), |
19784 | dwarf_attr_name (name), sect_offset_str (die->sect_off), | |
518817b3 | 19785 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
7d45c7c3 KB |
19786 | } |
19787 | ||
19788 | return str; | |
19789 | } | |
19790 | ||
05cf31d1 JB |
19791 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
19792 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 19793 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
19794 | |
19795 | static int | |
19796 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
19797 | { | |
19798 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
19799 | ||
19800 | return (attr && DW_UNSND (attr)); | |
19801 | } | |
19802 | ||
3ca72b44 | 19803 | static int |
e142c38c | 19804 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 19805 | { |
05cf31d1 JB |
19806 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
19807 | which value is non-zero. However, we have to be careful with | |
19808 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
19809 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
19810 | end up accidently finding a declaration attribute that belongs | |
19811 | to a different DIE referenced by the specification attribute, | |
19812 | even though the given DIE does not have a declaration attribute. */ | |
19813 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
19814 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
19815 | } |
19816 | ||
63d06c5c | 19817 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 19818 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
19819 | containing the return value on output. If there is no |
19820 | specification, but there is an abstract origin, that is | |
19821 | returned. */ | |
63d06c5c DC |
19822 | |
19823 | static struct die_info * | |
f2f0e013 | 19824 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 19825 | { |
f2f0e013 DJ |
19826 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
19827 | *spec_cu); | |
63d06c5c | 19828 | |
edb3359d DJ |
19829 | if (spec_attr == NULL) |
19830 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
19831 | ||
63d06c5c DC |
19832 | if (spec_attr == NULL) |
19833 | return NULL; | |
19834 | else | |
f2f0e013 | 19835 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 19836 | } |
c906108c | 19837 | |
527f3840 JK |
19838 | /* Stub for free_line_header to match void * callback types. */ |
19839 | ||
19840 | static void | |
19841 | free_line_header_voidp (void *arg) | |
19842 | { | |
9a3c8263 | 19843 | struct line_header *lh = (struct line_header *) arg; |
527f3840 | 19844 | |
fff8551c | 19845 | delete lh; |
527f3840 JK |
19846 | } |
19847 | ||
fff8551c PA |
19848 | void |
19849 | line_header::add_include_dir (const char *include_dir) | |
c906108c | 19850 | { |
27e0867f | 19851 | if (dwarf_line_debug >= 2) |
fff8551c PA |
19852 | fprintf_unfiltered (gdb_stdlog, "Adding dir %zu: %s\n", |
19853 | include_dirs.size () + 1, include_dir); | |
27e0867f | 19854 | |
fff8551c | 19855 | include_dirs.push_back (include_dir); |
debd256d | 19856 | } |
6e70227d | 19857 | |
fff8551c PA |
19858 | void |
19859 | line_header::add_file_name (const char *name, | |
ecfb656c | 19860 | dir_index d_index, |
fff8551c PA |
19861 | unsigned int mod_time, |
19862 | unsigned int length) | |
debd256d | 19863 | { |
27e0867f DE |
19864 | if (dwarf_line_debug >= 2) |
19865 | fprintf_unfiltered (gdb_stdlog, "Adding file %u: %s\n", | |
fff8551c | 19866 | (unsigned) file_names.size () + 1, name); |
27e0867f | 19867 | |
ecfb656c | 19868 | file_names.emplace_back (name, d_index, mod_time, length); |
debd256d | 19869 | } |
6e70227d | 19870 | |
83769d0b | 19871 | /* A convenience function to find the proper .debug_line section for a CU. */ |
36586728 TT |
19872 | |
19873 | static struct dwarf2_section_info * | |
19874 | get_debug_line_section (struct dwarf2_cu *cu) | |
19875 | { | |
19876 | struct dwarf2_section_info *section; | |
518817b3 SM |
19877 | struct dwarf2_per_objfile *dwarf2_per_objfile |
19878 | = cu->per_cu->dwarf2_per_objfile; | |
36586728 TT |
19879 | |
19880 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
19881 | DWO file. */ | |
19882 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
19883 | section = &cu->dwo_unit->dwo_file->sections.line; | |
19884 | else if (cu->per_cu->is_dwz) | |
19885 | { | |
ed2dc618 | 19886 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
36586728 TT |
19887 | |
19888 | section = &dwz->line; | |
19889 | } | |
19890 | else | |
19891 | section = &dwarf2_per_objfile->line; | |
19892 | ||
19893 | return section; | |
19894 | } | |
19895 | ||
43988095 JK |
19896 | /* Read directory or file name entry format, starting with byte of |
19897 | format count entries, ULEB128 pairs of entry formats, ULEB128 of | |
19898 | entries count and the entries themselves in the described entry | |
19899 | format. */ | |
19900 | ||
19901 | static void | |
ed2dc618 SM |
19902 | read_formatted_entries (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19903 | bfd *abfd, const gdb_byte **bufp, | |
43988095 JK |
19904 | struct line_header *lh, |
19905 | const struct comp_unit_head *cu_header, | |
19906 | void (*callback) (struct line_header *lh, | |
19907 | const char *name, | |
ecfb656c | 19908 | dir_index d_index, |
43988095 JK |
19909 | unsigned int mod_time, |
19910 | unsigned int length)) | |
19911 | { | |
19912 | gdb_byte format_count, formati; | |
19913 | ULONGEST data_count, datai; | |
19914 | const gdb_byte *buf = *bufp; | |
19915 | const gdb_byte *format_header_data; | |
43988095 JK |
19916 | unsigned int bytes_read; |
19917 | ||
19918 | format_count = read_1_byte (abfd, buf); | |
19919 | buf += 1; | |
19920 | format_header_data = buf; | |
19921 | for (formati = 0; formati < format_count; formati++) | |
19922 | { | |
19923 | read_unsigned_leb128 (abfd, buf, &bytes_read); | |
19924 | buf += bytes_read; | |
19925 | read_unsigned_leb128 (abfd, buf, &bytes_read); | |
19926 | buf += bytes_read; | |
19927 | } | |
19928 | ||
19929 | data_count = read_unsigned_leb128 (abfd, buf, &bytes_read); | |
19930 | buf += bytes_read; | |
19931 | for (datai = 0; datai < data_count; datai++) | |
19932 | { | |
19933 | const gdb_byte *format = format_header_data; | |
19934 | struct file_entry fe; | |
19935 | ||
43988095 JK |
19936 | for (formati = 0; formati < format_count; formati++) |
19937 | { | |
ecfb656c | 19938 | ULONGEST content_type = read_unsigned_leb128 (abfd, format, &bytes_read); |
43988095 | 19939 | format += bytes_read; |
43988095 | 19940 | |
ecfb656c | 19941 | ULONGEST form = read_unsigned_leb128 (abfd, format, &bytes_read); |
43988095 | 19942 | format += bytes_read; |
ecfb656c PA |
19943 | |
19944 | gdb::optional<const char *> string; | |
19945 | gdb::optional<unsigned int> uint; | |
19946 | ||
43988095 JK |
19947 | switch (form) |
19948 | { | |
19949 | case DW_FORM_string: | |
ecfb656c | 19950 | string.emplace (read_direct_string (abfd, buf, &bytes_read)); |
43988095 JK |
19951 | buf += bytes_read; |
19952 | break; | |
19953 | ||
19954 | case DW_FORM_line_strp: | |
ed2dc618 SM |
19955 | string.emplace (read_indirect_line_string (dwarf2_per_objfile, |
19956 | abfd, buf, | |
ecfb656c PA |
19957 | cu_header, |
19958 | &bytes_read)); | |
43988095 JK |
19959 | buf += bytes_read; |
19960 | break; | |
19961 | ||
19962 | case DW_FORM_data1: | |
ecfb656c | 19963 | uint.emplace (read_1_byte (abfd, buf)); |
43988095 JK |
19964 | buf += 1; |
19965 | break; | |
19966 | ||
19967 | case DW_FORM_data2: | |
ecfb656c | 19968 | uint.emplace (read_2_bytes (abfd, buf)); |
43988095 JK |
19969 | buf += 2; |
19970 | break; | |
19971 | ||
19972 | case DW_FORM_data4: | |
ecfb656c | 19973 | uint.emplace (read_4_bytes (abfd, buf)); |
43988095 JK |
19974 | buf += 4; |
19975 | break; | |
19976 | ||
19977 | case DW_FORM_data8: | |
ecfb656c | 19978 | uint.emplace (read_8_bytes (abfd, buf)); |
43988095 JK |
19979 | buf += 8; |
19980 | break; | |
19981 | ||
19982 | case DW_FORM_udata: | |
ecfb656c | 19983 | uint.emplace (read_unsigned_leb128 (abfd, buf, &bytes_read)); |
43988095 JK |
19984 | buf += bytes_read; |
19985 | break; | |
19986 | ||
19987 | case DW_FORM_block: | |
19988 | /* It is valid only for DW_LNCT_timestamp which is ignored by | |
19989 | current GDB. */ | |
19990 | break; | |
19991 | } | |
ecfb656c PA |
19992 | |
19993 | switch (content_type) | |
19994 | { | |
19995 | case DW_LNCT_path: | |
19996 | if (string.has_value ()) | |
19997 | fe.name = *string; | |
19998 | break; | |
19999 | case DW_LNCT_directory_index: | |
20000 | if (uint.has_value ()) | |
20001 | fe.d_index = (dir_index) *uint; | |
20002 | break; | |
20003 | case DW_LNCT_timestamp: | |
20004 | if (uint.has_value ()) | |
20005 | fe.mod_time = *uint; | |
20006 | break; | |
20007 | case DW_LNCT_size: | |
20008 | if (uint.has_value ()) | |
20009 | fe.length = *uint; | |
20010 | break; | |
20011 | case DW_LNCT_MD5: | |
20012 | break; | |
20013 | default: | |
b98664d3 | 20014 | complaint (_("Unknown format content type %s"), |
ecfb656c PA |
20015 | pulongest (content_type)); |
20016 | } | |
43988095 JK |
20017 | } |
20018 | ||
ecfb656c | 20019 | callback (lh, fe.name, fe.d_index, fe.mod_time, fe.length); |
43988095 JK |
20020 | } |
20021 | ||
20022 | *bufp = buf; | |
20023 | } | |
20024 | ||
debd256d | 20025 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 20026 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 20027 | to a struct line_header, allocated using xmalloc. |
cd366ee8 DE |
20028 | Returns NULL if there is a problem reading the header, e.g., if it |
20029 | has a version we don't understand. | |
debd256d JB |
20030 | |
20031 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
20032 | the returned object point into the dwarf line section buffer, |
20033 | and must not be freed. */ | |
ae2de4f8 | 20034 | |
fff8551c | 20035 | static line_header_up |
9c541725 | 20036 | dwarf_decode_line_header (sect_offset sect_off, struct dwarf2_cu *cu) |
debd256d | 20037 | { |
d521ce57 | 20038 | const gdb_byte *line_ptr; |
c764a876 | 20039 | unsigned int bytes_read, offset_size; |
debd256d | 20040 | int i; |
d521ce57 | 20041 | const char *cur_dir, *cur_file; |
3019eac3 DE |
20042 | struct dwarf2_section_info *section; |
20043 | bfd *abfd; | |
518817b3 SM |
20044 | struct dwarf2_per_objfile *dwarf2_per_objfile |
20045 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 | 20046 | |
36586728 | 20047 | section = get_debug_line_section (cu); |
3019eac3 DE |
20048 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); |
20049 | if (section->buffer == NULL) | |
debd256d | 20050 | { |
3019eac3 | 20051 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
b98664d3 | 20052 | complaint (_("missing .debug_line.dwo section")); |
3019eac3 | 20053 | else |
b98664d3 | 20054 | complaint (_("missing .debug_line section")); |
debd256d JB |
20055 | return 0; |
20056 | } | |
20057 | ||
fceca515 DE |
20058 | /* We can't do this until we know the section is non-empty. |
20059 | Only then do we know we have such a section. */ | |
a32a8923 | 20060 | abfd = get_section_bfd_owner (section); |
fceca515 | 20061 | |
a738430d MK |
20062 | /* Make sure that at least there's room for the total_length field. |
20063 | That could be 12 bytes long, but we're just going to fudge that. */ | |
9c541725 | 20064 | if (to_underlying (sect_off) + 4 >= section->size) |
debd256d | 20065 | { |
4d3c2250 | 20066 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
20067 | return 0; |
20068 | } | |
20069 | ||
fff8551c | 20070 | line_header_up lh (new line_header ()); |
debd256d | 20071 | |
9c541725 | 20072 | lh->sect_off = sect_off; |
527f3840 JK |
20073 | lh->offset_in_dwz = cu->per_cu->is_dwz; |
20074 | ||
9c541725 | 20075 | line_ptr = section->buffer + to_underlying (sect_off); |
debd256d | 20076 | |
a738430d | 20077 | /* Read in the header. */ |
6e70227d | 20078 | lh->total_length = |
c764a876 DE |
20079 | read_checked_initial_length_and_offset (abfd, line_ptr, &cu->header, |
20080 | &bytes_read, &offset_size); | |
debd256d | 20081 | line_ptr += bytes_read; |
3019eac3 | 20082 | if (line_ptr + lh->total_length > (section->buffer + section->size)) |
debd256d | 20083 | { |
4d3c2250 | 20084 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
20085 | return 0; |
20086 | } | |
20087 | lh->statement_program_end = line_ptr + lh->total_length; | |
20088 | lh->version = read_2_bytes (abfd, line_ptr); | |
20089 | line_ptr += 2; | |
43988095 | 20090 | if (lh->version > 5) |
cd366ee8 DE |
20091 | { |
20092 | /* This is a version we don't understand. The format could have | |
20093 | changed in ways we don't handle properly so just punt. */ | |
b98664d3 | 20094 | complaint (_("unsupported version in .debug_line section")); |
cd366ee8 DE |
20095 | return NULL; |
20096 | } | |
43988095 JK |
20097 | if (lh->version >= 5) |
20098 | { | |
20099 | gdb_byte segment_selector_size; | |
20100 | ||
20101 | /* Skip address size. */ | |
20102 | read_1_byte (abfd, line_ptr); | |
20103 | line_ptr += 1; | |
20104 | ||
20105 | segment_selector_size = read_1_byte (abfd, line_ptr); | |
20106 | line_ptr += 1; | |
20107 | if (segment_selector_size != 0) | |
20108 | { | |
b98664d3 | 20109 | complaint (_("unsupported segment selector size %u " |
43988095 JK |
20110 | "in .debug_line section"), |
20111 | segment_selector_size); | |
20112 | return NULL; | |
20113 | } | |
20114 | } | |
c764a876 DE |
20115 | lh->header_length = read_offset_1 (abfd, line_ptr, offset_size); |
20116 | line_ptr += offset_size; | |
debd256d JB |
20117 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); |
20118 | line_ptr += 1; | |
2dc7f7b3 TT |
20119 | if (lh->version >= 4) |
20120 | { | |
20121 | lh->maximum_ops_per_instruction = read_1_byte (abfd, line_ptr); | |
20122 | line_ptr += 1; | |
20123 | } | |
20124 | else | |
20125 | lh->maximum_ops_per_instruction = 1; | |
20126 | ||
20127 | if (lh->maximum_ops_per_instruction == 0) | |
20128 | { | |
20129 | lh->maximum_ops_per_instruction = 1; | |
b98664d3 | 20130 | complaint (_("invalid maximum_ops_per_instruction " |
3e43a32a | 20131 | "in `.debug_line' section")); |
2dc7f7b3 TT |
20132 | } |
20133 | ||
debd256d JB |
20134 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); |
20135 | line_ptr += 1; | |
20136 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
20137 | line_ptr += 1; | |
20138 | lh->line_range = read_1_byte (abfd, line_ptr); | |
20139 | line_ptr += 1; | |
20140 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
20141 | line_ptr += 1; | |
fff8551c | 20142 | lh->standard_opcode_lengths.reset (new unsigned char[lh->opcode_base]); |
debd256d JB |
20143 | |
20144 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
20145 | for (i = 1; i < lh->opcode_base; ++i) | |
20146 | { | |
20147 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
20148 | line_ptr += 1; | |
20149 | } | |
20150 | ||
43988095 | 20151 | if (lh->version >= 5) |
debd256d | 20152 | { |
43988095 | 20153 | /* Read directory table. */ |
ed2dc618 SM |
20154 | read_formatted_entries (dwarf2_per_objfile, abfd, &line_ptr, lh.get (), |
20155 | &cu->header, | |
fff8551c | 20156 | [] (struct line_header *lh, const char *name, |
ecfb656c | 20157 | dir_index d_index, unsigned int mod_time, |
fff8551c PA |
20158 | unsigned int length) |
20159 | { | |
20160 | lh->add_include_dir (name); | |
20161 | }); | |
debd256d | 20162 | |
43988095 | 20163 | /* Read file name table. */ |
ed2dc618 SM |
20164 | read_formatted_entries (dwarf2_per_objfile, abfd, &line_ptr, lh.get (), |
20165 | &cu->header, | |
fff8551c | 20166 | [] (struct line_header *lh, const char *name, |
ecfb656c | 20167 | dir_index d_index, unsigned int mod_time, |
fff8551c PA |
20168 | unsigned int length) |
20169 | { | |
ecfb656c | 20170 | lh->add_file_name (name, d_index, mod_time, length); |
fff8551c | 20171 | }); |
43988095 JK |
20172 | } |
20173 | else | |
debd256d | 20174 | { |
43988095 JK |
20175 | /* Read directory table. */ |
20176 | while ((cur_dir = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) | |
20177 | { | |
20178 | line_ptr += bytes_read; | |
fff8551c | 20179 | lh->add_include_dir (cur_dir); |
43988095 | 20180 | } |
debd256d JB |
20181 | line_ptr += bytes_read; |
20182 | ||
43988095 JK |
20183 | /* Read file name table. */ |
20184 | while ((cur_file = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) | |
20185 | { | |
ecfb656c PA |
20186 | unsigned int mod_time, length; |
20187 | dir_index d_index; | |
43988095 JK |
20188 | |
20189 | line_ptr += bytes_read; | |
ecfb656c | 20190 | d_index = (dir_index) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
43988095 JK |
20191 | line_ptr += bytes_read; |
20192 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20193 | line_ptr += bytes_read; | |
20194 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20195 | line_ptr += bytes_read; | |
20196 | ||
ecfb656c | 20197 | lh->add_file_name (cur_file, d_index, mod_time, length); |
43988095 JK |
20198 | } |
20199 | line_ptr += bytes_read; | |
debd256d | 20200 | } |
6e70227d | 20201 | lh->statement_program_start = line_ptr; |
debd256d | 20202 | |
3019eac3 | 20203 | if (line_ptr > (section->buffer + section->size)) |
b98664d3 | 20204 | complaint (_("line number info header doesn't " |
3e43a32a | 20205 | "fit in `.debug_line' section")); |
debd256d | 20206 | |
debd256d JB |
20207 | return lh; |
20208 | } | |
c906108c | 20209 | |
c6da4cef DE |
20210 | /* Subroutine of dwarf_decode_lines to simplify it. |
20211 | Return the file name of the psymtab for included file FILE_INDEX | |
20212 | in line header LH of PST. | |
20213 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
c89b44cd TT |
20214 | If space for the result is malloc'd, *NAME_HOLDER will be set. |
20215 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. */ | |
c6da4cef | 20216 | |
d521ce57 | 20217 | static const char * |
c6da4cef DE |
20218 | psymtab_include_file_name (const struct line_header *lh, int file_index, |
20219 | const struct partial_symtab *pst, | |
c89b44cd TT |
20220 | const char *comp_dir, |
20221 | gdb::unique_xmalloc_ptr<char> *name_holder) | |
c6da4cef | 20222 | { |
8c43009f | 20223 | const file_entry &fe = lh->file_names[file_index]; |
d521ce57 TT |
20224 | const char *include_name = fe.name; |
20225 | const char *include_name_to_compare = include_name; | |
72b9f47f | 20226 | const char *pst_filename; |
c6da4cef DE |
20227 | int file_is_pst; |
20228 | ||
8c43009f | 20229 | const char *dir_name = fe.include_dir (lh); |
c6da4cef | 20230 | |
c89b44cd | 20231 | gdb::unique_xmalloc_ptr<char> hold_compare; |
c6da4cef DE |
20232 | if (!IS_ABSOLUTE_PATH (include_name) |
20233 | && (dir_name != NULL || comp_dir != NULL)) | |
20234 | { | |
20235 | /* Avoid creating a duplicate psymtab for PST. | |
20236 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
20237 | Before we do the comparison, however, we need to account | |
20238 | for DIR_NAME and COMP_DIR. | |
20239 | First prepend dir_name (if non-NULL). If we still don't | |
20240 | have an absolute path prepend comp_dir (if non-NULL). | |
20241 | However, the directory we record in the include-file's | |
20242 | psymtab does not contain COMP_DIR (to match the | |
20243 | corresponding symtab(s)). | |
20244 | ||
20245 | Example: | |
20246 | ||
20247 | bash$ cd /tmp | |
20248 | bash$ gcc -g ./hello.c | |
20249 | include_name = "hello.c" | |
20250 | dir_name = "." | |
20251 | DW_AT_comp_dir = comp_dir = "/tmp" | |
5f52445b YQ |
20252 | DW_AT_name = "./hello.c" |
20253 | ||
20254 | */ | |
c6da4cef DE |
20255 | |
20256 | if (dir_name != NULL) | |
20257 | { | |
c89b44cd TT |
20258 | name_holder->reset (concat (dir_name, SLASH_STRING, |
20259 | include_name, (char *) NULL)); | |
20260 | include_name = name_holder->get (); | |
c6da4cef | 20261 | include_name_to_compare = include_name; |
c6da4cef DE |
20262 | } |
20263 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
20264 | { | |
c89b44cd TT |
20265 | hold_compare.reset (concat (comp_dir, SLASH_STRING, |
20266 | include_name, (char *) NULL)); | |
20267 | include_name_to_compare = hold_compare.get (); | |
c6da4cef DE |
20268 | } |
20269 | } | |
20270 | ||
20271 | pst_filename = pst->filename; | |
c89b44cd | 20272 | gdb::unique_xmalloc_ptr<char> copied_name; |
c6da4cef DE |
20273 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) |
20274 | { | |
c89b44cd TT |
20275 | copied_name.reset (concat (pst->dirname, SLASH_STRING, |
20276 | pst_filename, (char *) NULL)); | |
20277 | pst_filename = copied_name.get (); | |
c6da4cef DE |
20278 | } |
20279 | ||
1e3fad37 | 20280 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef | 20281 | |
c6da4cef DE |
20282 | if (file_is_pst) |
20283 | return NULL; | |
20284 | return include_name; | |
20285 | } | |
20286 | ||
d9b3de22 DE |
20287 | /* State machine to track the state of the line number program. */ |
20288 | ||
6f77053d | 20289 | class lnp_state_machine |
d9b3de22 | 20290 | { |
6f77053d PA |
20291 | public: |
20292 | /* Initialize a machine state for the start of a line number | |
20293 | program. */ | |
20294 | lnp_state_machine (gdbarch *arch, line_header *lh, bool record_lines_p); | |
20295 | ||
8c43009f PA |
20296 | file_entry *current_file () |
20297 | { | |
20298 | /* lh->file_names is 0-based, but the file name numbers in the | |
20299 | statement program are 1-based. */ | |
6f77053d PA |
20300 | return m_line_header->file_name_at (m_file); |
20301 | } | |
20302 | ||
20303 | /* Record the line in the state machine. END_SEQUENCE is true if | |
20304 | we're processing the end of a sequence. */ | |
20305 | void record_line (bool end_sequence); | |
20306 | ||
7ab6656f OJ |
20307 | /* Check ADDRESS is zero and less than UNRELOCATED_LOWPC and if true |
20308 | nop-out rest of the lines in this sequence. */ | |
6f77053d PA |
20309 | void check_line_address (struct dwarf2_cu *cu, |
20310 | const gdb_byte *line_ptr, | |
7ab6656f | 20311 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address); |
6f77053d PA |
20312 | |
20313 | void handle_set_discriminator (unsigned int discriminator) | |
20314 | { | |
20315 | m_discriminator = discriminator; | |
20316 | m_line_has_non_zero_discriminator |= discriminator != 0; | |
20317 | } | |
20318 | ||
20319 | /* Handle DW_LNE_set_address. */ | |
20320 | void handle_set_address (CORE_ADDR baseaddr, CORE_ADDR address) | |
20321 | { | |
20322 | m_op_index = 0; | |
20323 | address += baseaddr; | |
20324 | m_address = gdbarch_adjust_dwarf2_line (m_gdbarch, address, false); | |
20325 | } | |
20326 | ||
20327 | /* Handle DW_LNS_advance_pc. */ | |
20328 | void handle_advance_pc (CORE_ADDR adjust); | |
20329 | ||
20330 | /* Handle a special opcode. */ | |
20331 | void handle_special_opcode (unsigned char op_code); | |
20332 | ||
20333 | /* Handle DW_LNS_advance_line. */ | |
20334 | void handle_advance_line (int line_delta) | |
20335 | { | |
20336 | advance_line (line_delta); | |
20337 | } | |
20338 | ||
20339 | /* Handle DW_LNS_set_file. */ | |
20340 | void handle_set_file (file_name_index file); | |
20341 | ||
20342 | /* Handle DW_LNS_negate_stmt. */ | |
20343 | void handle_negate_stmt () | |
20344 | { | |
20345 | m_is_stmt = !m_is_stmt; | |
20346 | } | |
20347 | ||
20348 | /* Handle DW_LNS_const_add_pc. */ | |
20349 | void handle_const_add_pc (); | |
20350 | ||
20351 | /* Handle DW_LNS_fixed_advance_pc. */ | |
20352 | void handle_fixed_advance_pc (CORE_ADDR addr_adj) | |
20353 | { | |
20354 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20355 | m_op_index = 0; | |
20356 | } | |
20357 | ||
20358 | /* Handle DW_LNS_copy. */ | |
20359 | void handle_copy () | |
20360 | { | |
20361 | record_line (false); | |
20362 | m_discriminator = 0; | |
20363 | } | |
20364 | ||
20365 | /* Handle DW_LNE_end_sequence. */ | |
20366 | void handle_end_sequence () | |
20367 | { | |
20368 | m_record_line_callback = ::record_line; | |
20369 | } | |
20370 | ||
20371 | private: | |
20372 | /* Advance the line by LINE_DELTA. */ | |
20373 | void advance_line (int line_delta) | |
20374 | { | |
20375 | m_line += line_delta; | |
20376 | ||
20377 | if (line_delta != 0) | |
20378 | m_line_has_non_zero_discriminator = m_discriminator != 0; | |
8c43009f PA |
20379 | } |
20380 | ||
6f77053d PA |
20381 | gdbarch *m_gdbarch; |
20382 | ||
20383 | /* True if we're recording lines. | |
20384 | Otherwise we're building partial symtabs and are just interested in | |
20385 | finding include files mentioned by the line number program. */ | |
20386 | bool m_record_lines_p; | |
20387 | ||
8c43009f | 20388 | /* The line number header. */ |
6f77053d | 20389 | line_header *m_line_header; |
8c43009f | 20390 | |
6f77053d PA |
20391 | /* These are part of the standard DWARF line number state machine, |
20392 | and initialized according to the DWARF spec. */ | |
d9b3de22 | 20393 | |
6f77053d | 20394 | unsigned char m_op_index = 0; |
8c43009f | 20395 | /* The line table index (1-based) of the current file. */ |
6f77053d PA |
20396 | file_name_index m_file = (file_name_index) 1; |
20397 | unsigned int m_line = 1; | |
20398 | ||
20399 | /* These are initialized in the constructor. */ | |
20400 | ||
20401 | CORE_ADDR m_address; | |
20402 | bool m_is_stmt; | |
20403 | unsigned int m_discriminator; | |
d9b3de22 DE |
20404 | |
20405 | /* Additional bits of state we need to track. */ | |
20406 | ||
20407 | /* The last file that we called dwarf2_start_subfile for. | |
20408 | This is only used for TLLs. */ | |
6f77053d | 20409 | unsigned int m_last_file = 0; |
d9b3de22 | 20410 | /* The last file a line number was recorded for. */ |
6f77053d | 20411 | struct subfile *m_last_subfile = NULL; |
d9b3de22 DE |
20412 | |
20413 | /* The function to call to record a line. */ | |
6f77053d | 20414 | record_line_ftype *m_record_line_callback = NULL; |
d9b3de22 DE |
20415 | |
20416 | /* The last line number that was recorded, used to coalesce | |
20417 | consecutive entries for the same line. This can happen, for | |
20418 | example, when discriminators are present. PR 17276. */ | |
6f77053d PA |
20419 | unsigned int m_last_line = 0; |
20420 | bool m_line_has_non_zero_discriminator = false; | |
8c43009f | 20421 | }; |
d9b3de22 | 20422 | |
6f77053d PA |
20423 | void |
20424 | lnp_state_machine::handle_advance_pc (CORE_ADDR adjust) | |
20425 | { | |
20426 | CORE_ADDR addr_adj = (((m_op_index + adjust) | |
20427 | / m_line_header->maximum_ops_per_instruction) | |
20428 | * m_line_header->minimum_instruction_length); | |
20429 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20430 | m_op_index = ((m_op_index + adjust) | |
20431 | % m_line_header->maximum_ops_per_instruction); | |
20432 | } | |
d9b3de22 | 20433 | |
6f77053d PA |
20434 | void |
20435 | lnp_state_machine::handle_special_opcode (unsigned char op_code) | |
d9b3de22 | 20436 | { |
6f77053d PA |
20437 | unsigned char adj_opcode = op_code - m_line_header->opcode_base; |
20438 | CORE_ADDR addr_adj = (((m_op_index | |
20439 | + (adj_opcode / m_line_header->line_range)) | |
20440 | / m_line_header->maximum_ops_per_instruction) | |
20441 | * m_line_header->minimum_instruction_length); | |
20442 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20443 | m_op_index = ((m_op_index + (adj_opcode / m_line_header->line_range)) | |
20444 | % m_line_header->maximum_ops_per_instruction); | |
d9b3de22 | 20445 | |
6f77053d PA |
20446 | int line_delta = (m_line_header->line_base |
20447 | + (adj_opcode % m_line_header->line_range)); | |
20448 | advance_line (line_delta); | |
20449 | record_line (false); | |
20450 | m_discriminator = 0; | |
20451 | } | |
d9b3de22 | 20452 | |
6f77053d PA |
20453 | void |
20454 | lnp_state_machine::handle_set_file (file_name_index file) | |
20455 | { | |
20456 | m_file = file; | |
20457 | ||
20458 | const file_entry *fe = current_file (); | |
20459 | if (fe == NULL) | |
20460 | dwarf2_debug_line_missing_file_complaint (); | |
20461 | else if (m_record_lines_p) | |
20462 | { | |
20463 | const char *dir = fe->include_dir (m_line_header); | |
20464 | ||
20465 | m_last_subfile = current_subfile; | |
20466 | m_line_has_non_zero_discriminator = m_discriminator != 0; | |
20467 | dwarf2_start_subfile (fe->name, dir); | |
20468 | } | |
20469 | } | |
20470 | ||
20471 | void | |
20472 | lnp_state_machine::handle_const_add_pc () | |
20473 | { | |
20474 | CORE_ADDR adjust | |
20475 | = (255 - m_line_header->opcode_base) / m_line_header->line_range; | |
20476 | ||
20477 | CORE_ADDR addr_adj | |
20478 | = (((m_op_index + adjust) | |
20479 | / m_line_header->maximum_ops_per_instruction) | |
20480 | * m_line_header->minimum_instruction_length); | |
20481 | ||
20482 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20483 | m_op_index = ((m_op_index + adjust) | |
20484 | % m_line_header->maximum_ops_per_instruction); | |
20485 | } | |
d9b3de22 | 20486 | |
c91513d8 PP |
20487 | /* Ignore this record_line request. */ |
20488 | ||
20489 | static void | |
20490 | noop_record_line (struct subfile *subfile, int line, CORE_ADDR pc) | |
20491 | { | |
20492 | return; | |
20493 | } | |
20494 | ||
a05a36a5 DE |
20495 | /* Return non-zero if we should add LINE to the line number table. |
20496 | LINE is the line to add, LAST_LINE is the last line that was added, | |
20497 | LAST_SUBFILE is the subfile for LAST_LINE. | |
20498 | LINE_HAS_NON_ZERO_DISCRIMINATOR is non-zero if LINE has ever | |
20499 | had a non-zero discriminator. | |
20500 | ||
20501 | We have to be careful in the presence of discriminators. | |
20502 | E.g., for this line: | |
20503 | ||
20504 | for (i = 0; i < 100000; i++); | |
20505 | ||
20506 | clang can emit four line number entries for that one line, | |
20507 | each with a different discriminator. | |
20508 | See gdb.dwarf2/dw2-single-line-discriminators.exp for an example. | |
20509 | ||
20510 | However, we want gdb to coalesce all four entries into one. | |
20511 | Otherwise the user could stepi into the middle of the line and | |
20512 | gdb would get confused about whether the pc really was in the | |
20513 | middle of the line. | |
20514 | ||
20515 | Things are further complicated by the fact that two consecutive | |
20516 | line number entries for the same line is a heuristic used by gcc | |
20517 | to denote the end of the prologue. So we can't just discard duplicate | |
20518 | entries, we have to be selective about it. The heuristic we use is | |
20519 | that we only collapse consecutive entries for the same line if at least | |
20520 | one of those entries has a non-zero discriminator. PR 17276. | |
20521 | ||
20522 | Note: Addresses in the line number state machine can never go backwards | |
20523 | within one sequence, thus this coalescing is ok. */ | |
20524 | ||
20525 | static int | |
20526 | dwarf_record_line_p (unsigned int line, unsigned int last_line, | |
20527 | int line_has_non_zero_discriminator, | |
20528 | struct subfile *last_subfile) | |
20529 | { | |
20530 | if (current_subfile != last_subfile) | |
20531 | return 1; | |
20532 | if (line != last_line) | |
20533 | return 1; | |
20534 | /* Same line for the same file that we've seen already. | |
20535 | As a last check, for pr 17276, only record the line if the line | |
20536 | has never had a non-zero discriminator. */ | |
20537 | if (!line_has_non_zero_discriminator) | |
20538 | return 1; | |
20539 | return 0; | |
20540 | } | |
20541 | ||
252a6764 DE |
20542 | /* Use P_RECORD_LINE to record line number LINE beginning at address ADDRESS |
20543 | in the line table of subfile SUBFILE. */ | |
20544 | ||
20545 | static void | |
d9b3de22 DE |
20546 | dwarf_record_line_1 (struct gdbarch *gdbarch, struct subfile *subfile, |
20547 | unsigned int line, CORE_ADDR address, | |
20548 | record_line_ftype p_record_line) | |
252a6764 DE |
20549 | { |
20550 | CORE_ADDR addr = gdbarch_addr_bits_remove (gdbarch, address); | |
20551 | ||
27e0867f DE |
20552 | if (dwarf_line_debug) |
20553 | { | |
20554 | fprintf_unfiltered (gdb_stdlog, | |
20555 | "Recording line %u, file %s, address %s\n", | |
20556 | line, lbasename (subfile->name), | |
20557 | paddress (gdbarch, address)); | |
20558 | } | |
20559 | ||
d5962de5 | 20560 | (*p_record_line) (subfile, line, addr); |
252a6764 DE |
20561 | } |
20562 | ||
20563 | /* Subroutine of dwarf_decode_lines_1 to simplify it. | |
20564 | Mark the end of a set of line number records. | |
d9b3de22 | 20565 | The arguments are the same as for dwarf_record_line_1. |
252a6764 DE |
20566 | If SUBFILE is NULL the request is ignored. */ |
20567 | ||
20568 | static void | |
20569 | dwarf_finish_line (struct gdbarch *gdbarch, struct subfile *subfile, | |
20570 | CORE_ADDR address, record_line_ftype p_record_line) | |
20571 | { | |
27e0867f DE |
20572 | if (subfile == NULL) |
20573 | return; | |
20574 | ||
20575 | if (dwarf_line_debug) | |
20576 | { | |
20577 | fprintf_unfiltered (gdb_stdlog, | |
20578 | "Finishing current line, file %s, address %s\n", | |
20579 | lbasename (subfile->name), | |
20580 | paddress (gdbarch, address)); | |
20581 | } | |
20582 | ||
d9b3de22 DE |
20583 | dwarf_record_line_1 (gdbarch, subfile, 0, address, p_record_line); |
20584 | } | |
20585 | ||
6f77053d PA |
20586 | void |
20587 | lnp_state_machine::record_line (bool end_sequence) | |
d9b3de22 | 20588 | { |
d9b3de22 DE |
20589 | if (dwarf_line_debug) |
20590 | { | |
20591 | fprintf_unfiltered (gdb_stdlog, | |
20592 | "Processing actual line %u: file %u," | |
20593 | " address %s, is_stmt %u, discrim %u\n", | |
6f77053d PA |
20594 | m_line, to_underlying (m_file), |
20595 | paddress (m_gdbarch, m_address), | |
20596 | m_is_stmt, m_discriminator); | |
d9b3de22 DE |
20597 | } |
20598 | ||
6f77053d | 20599 | file_entry *fe = current_file (); |
8c43009f PA |
20600 | |
20601 | if (fe == NULL) | |
d9b3de22 DE |
20602 | dwarf2_debug_line_missing_file_complaint (); |
20603 | /* For now we ignore lines not starting on an instruction boundary. | |
20604 | But not when processing end_sequence for compatibility with the | |
20605 | previous version of the code. */ | |
6f77053d | 20606 | else if (m_op_index == 0 || end_sequence) |
d9b3de22 | 20607 | { |
8c43009f | 20608 | fe->included_p = 1; |
6f77053d | 20609 | if (m_record_lines_p && m_is_stmt) |
d9b3de22 | 20610 | { |
6f77053d | 20611 | if (m_last_subfile != current_subfile || end_sequence) |
d9b3de22 | 20612 | { |
6f77053d PA |
20613 | dwarf_finish_line (m_gdbarch, m_last_subfile, |
20614 | m_address, m_record_line_callback); | |
d9b3de22 DE |
20615 | } |
20616 | ||
20617 | if (!end_sequence) | |
20618 | { | |
6f77053d PA |
20619 | if (dwarf_record_line_p (m_line, m_last_line, |
20620 | m_line_has_non_zero_discriminator, | |
20621 | m_last_subfile)) | |
d9b3de22 | 20622 | { |
6f77053d PA |
20623 | dwarf_record_line_1 (m_gdbarch, current_subfile, |
20624 | m_line, m_address, | |
20625 | m_record_line_callback); | |
d9b3de22 | 20626 | } |
6f77053d PA |
20627 | m_last_subfile = current_subfile; |
20628 | m_last_line = m_line; | |
d9b3de22 DE |
20629 | } |
20630 | } | |
20631 | } | |
20632 | } | |
20633 | ||
6f77053d PA |
20634 | lnp_state_machine::lnp_state_machine (gdbarch *arch, line_header *lh, |
20635 | bool record_lines_p) | |
d9b3de22 | 20636 | { |
6f77053d PA |
20637 | m_gdbarch = arch; |
20638 | m_record_lines_p = record_lines_p; | |
20639 | m_line_header = lh; | |
d9b3de22 | 20640 | |
6f77053d | 20641 | m_record_line_callback = ::record_line; |
d9b3de22 | 20642 | |
d9b3de22 DE |
20643 | /* Call `gdbarch_adjust_dwarf2_line' on the initial 0 address as if there |
20644 | was a line entry for it so that the backend has a chance to adjust it | |
20645 | and also record it in case it needs it. This is currently used by MIPS | |
20646 | code, cf. `mips_adjust_dwarf2_line'. */ | |
6f77053d PA |
20647 | m_address = gdbarch_adjust_dwarf2_line (arch, 0, 0); |
20648 | m_is_stmt = lh->default_is_stmt; | |
20649 | m_discriminator = 0; | |
252a6764 DE |
20650 | } |
20651 | ||
6f77053d PA |
20652 | void |
20653 | lnp_state_machine::check_line_address (struct dwarf2_cu *cu, | |
20654 | const gdb_byte *line_ptr, | |
7ab6656f | 20655 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address) |
924c2928 | 20656 | { |
7ab6656f OJ |
20657 | /* If ADDRESS < UNRELOCATED_LOWPC then it's not a usable value, it's outside |
20658 | the pc range of the CU. However, we restrict the test to only ADDRESS | |
20659 | values of zero to preserve GDB's previous behaviour which is to handle | |
20660 | the specific case of a function being GC'd by the linker. */ | |
924c2928 | 20661 | |
7ab6656f | 20662 | if (address == 0 && address < unrelocated_lowpc) |
924c2928 DE |
20663 | { |
20664 | /* This line table is for a function which has been | |
20665 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
20666 | ||
518817b3 | 20667 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
924c2928 DE |
20668 | long line_offset = line_ptr - get_debug_line_section (cu)->buffer; |
20669 | ||
b98664d3 | 20670 | complaint (_(".debug_line address at offset 0x%lx is 0 [in module %s]"), |
924c2928 | 20671 | line_offset, objfile_name (objfile)); |
6f77053d PA |
20672 | m_record_line_callback = noop_record_line; |
20673 | /* Note: record_line_callback is left as noop_record_line until | |
20674 | we see DW_LNE_end_sequence. */ | |
924c2928 DE |
20675 | } |
20676 | } | |
20677 | ||
f3f5162e | 20678 | /* Subroutine of dwarf_decode_lines to simplify it. |
d9b3de22 DE |
20679 | Process the line number information in LH. |
20680 | If DECODE_FOR_PST_P is non-zero, all we do is process the line number | |
20681 | program in order to set included_p for every referenced header. */ | |
debd256d | 20682 | |
c906108c | 20683 | static void |
43f3e411 DE |
20684 | dwarf_decode_lines_1 (struct line_header *lh, struct dwarf2_cu *cu, |
20685 | const int decode_for_pst_p, CORE_ADDR lowpc) | |
c906108c | 20686 | { |
d521ce57 TT |
20687 | const gdb_byte *line_ptr, *extended_end; |
20688 | const gdb_byte *line_end; | |
a8c50c1f | 20689 | unsigned int bytes_read, extended_len; |
699ca60a | 20690 | unsigned char op_code, extended_op; |
e142c38c | 20691 | CORE_ADDR baseaddr; |
518817b3 | 20692 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
f3f5162e | 20693 | bfd *abfd = objfile->obfd; |
fbf65064 | 20694 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
6f77053d PA |
20695 | /* True if we're recording line info (as opposed to building partial |
20696 | symtabs and just interested in finding include files mentioned by | |
20697 | the line number program). */ | |
20698 | bool record_lines_p = !decode_for_pst_p; | |
e142c38c DJ |
20699 | |
20700 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 20701 | |
debd256d JB |
20702 | line_ptr = lh->statement_program_start; |
20703 | line_end = lh->statement_program_end; | |
c906108c SS |
20704 | |
20705 | /* Read the statement sequences until there's nothing left. */ | |
20706 | while (line_ptr < line_end) | |
20707 | { | |
6f77053d PA |
20708 | /* The DWARF line number program state machine. Reset the state |
20709 | machine at the start of each sequence. */ | |
20710 | lnp_state_machine state_machine (gdbarch, lh, record_lines_p); | |
20711 | bool end_sequence = false; | |
d9b3de22 | 20712 | |
8c43009f | 20713 | if (record_lines_p) |
c906108c | 20714 | { |
8c43009f PA |
20715 | /* Start a subfile for the current file of the state |
20716 | machine. */ | |
20717 | const file_entry *fe = state_machine.current_file (); | |
20718 | ||
20719 | if (fe != NULL) | |
20720 | dwarf2_start_subfile (fe->name, fe->include_dir (lh)); | |
c906108c SS |
20721 | } |
20722 | ||
a738430d | 20723 | /* Decode the table. */ |
d9b3de22 | 20724 | while (line_ptr < line_end && !end_sequence) |
c906108c SS |
20725 | { |
20726 | op_code = read_1_byte (abfd, line_ptr); | |
20727 | line_ptr += 1; | |
9aa1fe7e | 20728 | |
debd256d | 20729 | if (op_code >= lh->opcode_base) |
6e70227d | 20730 | { |
8e07a239 | 20731 | /* Special opcode. */ |
6f77053d | 20732 | state_machine.handle_special_opcode (op_code); |
9aa1fe7e GK |
20733 | } |
20734 | else switch (op_code) | |
c906108c SS |
20735 | { |
20736 | case DW_LNS_extended_op: | |
3e43a32a MS |
20737 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
20738 | &bytes_read); | |
473b7be6 | 20739 | line_ptr += bytes_read; |
a8c50c1f | 20740 | extended_end = line_ptr + extended_len; |
c906108c SS |
20741 | extended_op = read_1_byte (abfd, line_ptr); |
20742 | line_ptr += 1; | |
20743 | switch (extended_op) | |
20744 | { | |
20745 | case DW_LNE_end_sequence: | |
6f77053d PA |
20746 | state_machine.handle_end_sequence (); |
20747 | end_sequence = true; | |
c906108c SS |
20748 | break; |
20749 | case DW_LNE_set_address: | |
d9b3de22 DE |
20750 | { |
20751 | CORE_ADDR address | |
20752 | = read_address (abfd, line_ptr, cu, &bytes_read); | |
d9b3de22 | 20753 | line_ptr += bytes_read; |
6f77053d PA |
20754 | |
20755 | state_machine.check_line_address (cu, line_ptr, | |
7ab6656f | 20756 | lowpc - baseaddr, address); |
6f77053d | 20757 | state_machine.handle_set_address (baseaddr, address); |
d9b3de22 | 20758 | } |
c906108c SS |
20759 | break; |
20760 | case DW_LNE_define_file: | |
debd256d | 20761 | { |
d521ce57 | 20762 | const char *cur_file; |
ecfb656c PA |
20763 | unsigned int mod_time, length; |
20764 | dir_index dindex; | |
6e70227d | 20765 | |
3e43a32a MS |
20766 | cur_file = read_direct_string (abfd, line_ptr, |
20767 | &bytes_read); | |
debd256d | 20768 | line_ptr += bytes_read; |
ecfb656c | 20769 | dindex = (dir_index) |
debd256d JB |
20770 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
20771 | line_ptr += bytes_read; | |
20772 | mod_time = | |
20773 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20774 | line_ptr += bytes_read; | |
20775 | length = | |
20776 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20777 | line_ptr += bytes_read; | |
ecfb656c | 20778 | lh->add_file_name (cur_file, dindex, mod_time, length); |
debd256d | 20779 | } |
c906108c | 20780 | break; |
d0c6ba3d | 20781 | case DW_LNE_set_discriminator: |
6f77053d PA |
20782 | { |
20783 | /* The discriminator is not interesting to the | |
20784 | debugger; just ignore it. We still need to | |
20785 | check its value though: | |
20786 | if there are consecutive entries for the same | |
20787 | (non-prologue) line we want to coalesce them. | |
20788 | PR 17276. */ | |
20789 | unsigned int discr | |
20790 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20791 | line_ptr += bytes_read; | |
20792 | ||
20793 | state_machine.handle_set_discriminator (discr); | |
20794 | } | |
d0c6ba3d | 20795 | break; |
c906108c | 20796 | default: |
b98664d3 | 20797 | complaint (_("mangled .debug_line section")); |
debd256d | 20798 | return; |
c906108c | 20799 | } |
a8c50c1f DJ |
20800 | /* Make sure that we parsed the extended op correctly. If e.g. |
20801 | we expected a different address size than the producer used, | |
20802 | we may have read the wrong number of bytes. */ | |
20803 | if (line_ptr != extended_end) | |
20804 | { | |
b98664d3 | 20805 | complaint (_("mangled .debug_line section")); |
a8c50c1f DJ |
20806 | return; |
20807 | } | |
c906108c SS |
20808 | break; |
20809 | case DW_LNS_copy: | |
6f77053d | 20810 | state_machine.handle_copy (); |
c906108c SS |
20811 | break; |
20812 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
20813 | { |
20814 | CORE_ADDR adjust | |
20815 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
2dc7f7b3 | 20816 | line_ptr += bytes_read; |
6f77053d PA |
20817 | |
20818 | state_machine.handle_advance_pc (adjust); | |
2dc7f7b3 | 20819 | } |
c906108c SS |
20820 | break; |
20821 | case DW_LNS_advance_line: | |
a05a36a5 DE |
20822 | { |
20823 | int line_delta | |
20824 | = read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
a05a36a5 | 20825 | line_ptr += bytes_read; |
6f77053d PA |
20826 | |
20827 | state_machine.handle_advance_line (line_delta); | |
a05a36a5 | 20828 | } |
c906108c SS |
20829 | break; |
20830 | case DW_LNS_set_file: | |
d9b3de22 | 20831 | { |
6f77053d | 20832 | file_name_index file |
ecfb656c PA |
20833 | = (file_name_index) read_unsigned_leb128 (abfd, line_ptr, |
20834 | &bytes_read); | |
d9b3de22 | 20835 | line_ptr += bytes_read; |
8c43009f | 20836 | |
6f77053d | 20837 | state_machine.handle_set_file (file); |
d9b3de22 | 20838 | } |
c906108c SS |
20839 | break; |
20840 | case DW_LNS_set_column: | |
0ad93d4f | 20841 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
c906108c SS |
20842 | line_ptr += bytes_read; |
20843 | break; | |
20844 | case DW_LNS_negate_stmt: | |
6f77053d | 20845 | state_machine.handle_negate_stmt (); |
c906108c SS |
20846 | break; |
20847 | case DW_LNS_set_basic_block: | |
c906108c | 20848 | break; |
c2c6d25f JM |
20849 | /* Add to the address register of the state machine the |
20850 | address increment value corresponding to special opcode | |
a738430d MK |
20851 | 255. I.e., this value is scaled by the minimum |
20852 | instruction length since special opcode 255 would have | |
b021a221 | 20853 | scaled the increment. */ |
c906108c | 20854 | case DW_LNS_const_add_pc: |
6f77053d | 20855 | state_machine.handle_const_add_pc (); |
c906108c SS |
20856 | break; |
20857 | case DW_LNS_fixed_advance_pc: | |
3e29f34a | 20858 | { |
6f77053d | 20859 | CORE_ADDR addr_adj = read_2_bytes (abfd, line_ptr); |
3e29f34a | 20860 | line_ptr += 2; |
6f77053d PA |
20861 | |
20862 | state_machine.handle_fixed_advance_pc (addr_adj); | |
3e29f34a | 20863 | } |
c906108c | 20864 | break; |
9aa1fe7e | 20865 | default: |
a738430d MK |
20866 | { |
20867 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 20868 | int i; |
a738430d | 20869 | |
debd256d | 20870 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
20871 | { |
20872 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20873 | line_ptr += bytes_read; | |
20874 | } | |
20875 | } | |
c906108c SS |
20876 | } |
20877 | } | |
d9b3de22 DE |
20878 | |
20879 | if (!end_sequence) | |
20880 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
20881 | ||
20882 | /* We got a DW_LNE_end_sequence (or we ran off the end of the buffer, | |
20883 | in which case we still finish recording the last line). */ | |
6f77053d | 20884 | state_machine.record_line (true); |
c906108c | 20885 | } |
f3f5162e DE |
20886 | } |
20887 | ||
20888 | /* Decode the Line Number Program (LNP) for the given line_header | |
20889 | structure and CU. The actual information extracted and the type | |
20890 | of structures created from the LNP depends on the value of PST. | |
20891 | ||
20892 | 1. If PST is NULL, then this procedure uses the data from the program | |
20893 | to create all necessary symbol tables, and their linetables. | |
20894 | ||
20895 | 2. If PST is not NULL, this procedure reads the program to determine | |
20896 | the list of files included by the unit represented by PST, and | |
20897 | builds all the associated partial symbol tables. | |
20898 | ||
20899 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
20900 | It is used for relative paths in the line table. | |
20901 | NOTE: When processing partial symtabs (pst != NULL), | |
20902 | comp_dir == pst->dirname. | |
20903 | ||
20904 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
20905 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
20906 | symtab we don't use it in the name of the psymtabs we create. | |
20907 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
c3b7b696 YQ |
20908 | A good testcase for this is mb-inline.exp. |
20909 | ||
527f3840 JK |
20910 | LOWPC is the lowest address in CU (or 0 if not known). |
20911 | ||
20912 | Boolean DECODE_MAPPING specifies we need to fully decode .debug_line | |
20913 | for its PC<->lines mapping information. Otherwise only the filename | |
20914 | table is read in. */ | |
f3f5162e DE |
20915 | |
20916 | static void | |
20917 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
c3b7b696 | 20918 | struct dwarf2_cu *cu, struct partial_symtab *pst, |
527f3840 | 20919 | CORE_ADDR lowpc, int decode_mapping) |
f3f5162e | 20920 | { |
518817b3 | 20921 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
f3f5162e | 20922 | const int decode_for_pst_p = (pst != NULL); |
f3f5162e | 20923 | |
527f3840 JK |
20924 | if (decode_mapping) |
20925 | dwarf_decode_lines_1 (lh, cu, decode_for_pst_p, lowpc); | |
aaa75496 JB |
20926 | |
20927 | if (decode_for_pst_p) | |
20928 | { | |
20929 | int file_index; | |
20930 | ||
20931 | /* Now that we're done scanning the Line Header Program, we can | |
20932 | create the psymtab of each included file. */ | |
fff8551c | 20933 | for (file_index = 0; file_index < lh->file_names.size (); file_index++) |
aaa75496 JB |
20934 | if (lh->file_names[file_index].included_p == 1) |
20935 | { | |
c89b44cd | 20936 | gdb::unique_xmalloc_ptr<char> name_holder; |
d521ce57 | 20937 | const char *include_name = |
c89b44cd TT |
20938 | psymtab_include_file_name (lh, file_index, pst, comp_dir, |
20939 | &name_holder); | |
c6da4cef | 20940 | if (include_name != NULL) |
aaa75496 JB |
20941 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
20942 | } | |
20943 | } | |
cb1df416 DJ |
20944 | else |
20945 | { | |
20946 | /* Make sure a symtab is created for every file, even files | |
20947 | which contain only variables (i.e. no code with associated | |
20948 | line numbers). */ | |
43f3e411 | 20949 | struct compunit_symtab *cust = buildsym_compunit_symtab (); |
cb1df416 | 20950 | int i; |
cb1df416 | 20951 | |
fff8551c | 20952 | for (i = 0; i < lh->file_names.size (); i++) |
cb1df416 | 20953 | { |
8c43009f | 20954 | file_entry &fe = lh->file_names[i]; |
9a619af0 | 20955 | |
8c43009f | 20956 | dwarf2_start_subfile (fe.name, fe.include_dir (lh)); |
cb1df416 | 20957 | |
cb1df416 | 20958 | if (current_subfile->symtab == NULL) |
43f3e411 DE |
20959 | { |
20960 | current_subfile->symtab | |
20961 | = allocate_symtab (cust, current_subfile->name); | |
20962 | } | |
8c43009f | 20963 | fe.symtab = current_subfile->symtab; |
cb1df416 DJ |
20964 | } |
20965 | } | |
c906108c SS |
20966 | } |
20967 | ||
20968 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
20969 | DIRNAME the name of the source directory which contains FILENAME | |
4d663531 | 20970 | or NULL if not known. |
c906108c SS |
20971 | This routine tries to keep line numbers from identical absolute and |
20972 | relative file names in a common subfile. | |
20973 | ||
20974 | Using the `list' example from the GDB testsuite, which resides in | |
20975 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
20976 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
20977 | ||
c5aa993b | 20978 | DW_AT_name: /srcdir/list0.c |
4d663531 | 20979 | DW_AT_comp_dir: /compdir |
357e46e7 | 20980 | files.files[0].name: list0.h |
c5aa993b | 20981 | files.files[0].dir: /srcdir |
357e46e7 | 20982 | files.files[1].name: list0.c |
c5aa993b | 20983 | files.files[1].dir: /srcdir |
c906108c SS |
20984 | |
20985 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
20986 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
20987 | start_subfile will ensure that this happens provided that we pass the | |
20988 | concatenation of files.files[1].dir and files.files[1].name as the | |
20989 | subfile's name. */ | |
c906108c SS |
20990 | |
20991 | static void | |
4d663531 | 20992 | dwarf2_start_subfile (const char *filename, const char *dirname) |
c906108c | 20993 | { |
d521ce57 | 20994 | char *copy = NULL; |
4f1520fb | 20995 | |
4d663531 | 20996 | /* In order not to lose the line information directory, |
4f1520fb FR |
20997 | we concatenate it to the filename when it makes sense. |
20998 | Note that the Dwarf3 standard says (speaking of filenames in line | |
20999 | information): ``The directory index is ignored for file names | |
21000 | that represent full path names''. Thus ignoring dirname in the | |
21001 | `else' branch below isn't an issue. */ | |
c906108c | 21002 | |
d5166ae1 | 21003 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
d521ce57 TT |
21004 | { |
21005 | copy = concat (dirname, SLASH_STRING, filename, (char *)NULL); | |
21006 | filename = copy; | |
21007 | } | |
c906108c | 21008 | |
4d663531 | 21009 | start_subfile (filename); |
4f1520fb | 21010 | |
d521ce57 TT |
21011 | if (copy != NULL) |
21012 | xfree (copy); | |
c906108c SS |
21013 | } |
21014 | ||
f4dc4d17 DE |
21015 | /* Start a symtab for DWARF. |
21016 | NAME, COMP_DIR, LOW_PC are passed to start_symtab. */ | |
21017 | ||
43f3e411 | 21018 | static struct compunit_symtab * |
f4dc4d17 | 21019 | dwarf2_start_symtab (struct dwarf2_cu *cu, |
15d034d0 | 21020 | const char *name, const char *comp_dir, CORE_ADDR low_pc) |
f4dc4d17 | 21021 | { |
43f3e411 | 21022 | struct compunit_symtab *cust |
518817b3 SM |
21023 | = start_symtab (cu->per_cu->dwarf2_per_objfile->objfile, name, comp_dir, |
21024 | low_pc, cu->language); | |
43f3e411 | 21025 | |
f4dc4d17 DE |
21026 | record_debugformat ("DWARF 2"); |
21027 | record_producer (cu->producer); | |
21028 | ||
4d4ec4e5 | 21029 | cu->processing_has_namespace_info = 0; |
43f3e411 DE |
21030 | |
21031 | return cust; | |
f4dc4d17 DE |
21032 | } |
21033 | ||
4c2df51b DJ |
21034 | static void |
21035 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 21036 | struct dwarf2_cu *cu) |
4c2df51b | 21037 | { |
518817b3 | 21038 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e7c27a73 DJ |
21039 | struct comp_unit_head *cu_header = &cu->header; |
21040 | ||
4c2df51b DJ |
21041 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
21042 | code here to turn a symbol with DW_AT_external and a | |
21043 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
21044 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
21045 | with some versions of binutils) where shared libraries could have | |
21046 | relocations against symbols in their debug information - the | |
21047 | minimal symbol would have the right address, but the debug info | |
21048 | would not. It's no longer necessary, because we will explicitly | |
21049 | apply relocations when we read in the debug information now. */ | |
21050 | ||
21051 | /* A DW_AT_location attribute with no contents indicates that a | |
21052 | variable has been optimized away. */ | |
21053 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
21054 | { | |
f1e6e072 | 21055 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
4c2df51b DJ |
21056 | return; |
21057 | } | |
21058 | ||
21059 | /* Handle one degenerate form of location expression specially, to | |
21060 | preserve GDB's previous behavior when section offsets are | |
3019eac3 DE |
21061 | specified. If this is just a DW_OP_addr or DW_OP_GNU_addr_index |
21062 | then mark this symbol as LOC_STATIC. */ | |
4c2df51b DJ |
21063 | |
21064 | if (attr_form_is_block (attr) | |
3019eac3 DE |
21065 | && ((DW_BLOCK (attr)->data[0] == DW_OP_addr |
21066 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size) | |
21067 | || (DW_BLOCK (attr)->data[0] == DW_OP_GNU_addr_index | |
21068 | && (DW_BLOCK (attr)->size | |
21069 | == 1 + leb128_size (&DW_BLOCK (attr)->data[1]))))) | |
4c2df51b | 21070 | { |
891d2f0b | 21071 | unsigned int dummy; |
4c2df51b | 21072 | |
3019eac3 DE |
21073 | if (DW_BLOCK (attr)->data[0] == DW_OP_addr) |
21074 | SYMBOL_VALUE_ADDRESS (sym) = | |
21075 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); | |
21076 | else | |
21077 | SYMBOL_VALUE_ADDRESS (sym) = | |
21078 | read_addr_index_from_leb128 (cu, DW_BLOCK (attr)->data + 1, &dummy); | |
f1e6e072 | 21079 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
4c2df51b DJ |
21080 | fixup_symbol_section (sym, objfile); |
21081 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
21082 | SYMBOL_SECTION (sym)); | |
4c2df51b DJ |
21083 | return; |
21084 | } | |
21085 | ||
21086 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
21087 | expression evaluator, and use LOC_COMPUTED only when necessary | |
21088 | (i.e. when the value of a register or memory location is | |
21089 | referenced, or a thread-local block, etc.). Then again, it might | |
21090 | not be worthwhile. I'm assuming that it isn't unless performance | |
21091 | or memory numbers show me otherwise. */ | |
21092 | ||
f1e6e072 | 21093 | dwarf2_symbol_mark_computed (attr, sym, cu, 0); |
8be455d7 | 21094 | |
f1e6e072 | 21095 | if (SYMBOL_COMPUTED_OPS (sym)->location_has_loclist) |
8be455d7 | 21096 | cu->has_loclist = 1; |
4c2df51b DJ |
21097 | } |
21098 | ||
c906108c SS |
21099 | /* Given a pointer to a DWARF information entry, figure out if we need |
21100 | to make a symbol table entry for it, and if so, create a new entry | |
21101 | and return a pointer to it. | |
21102 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
21103 | used the passed type. |
21104 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
21105 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
21106 | |
21107 | static struct symbol * | |
5e2db402 TT |
21108 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
21109 | struct symbol *space) | |
c906108c | 21110 | { |
518817b3 SM |
21111 | struct dwarf2_per_objfile *dwarf2_per_objfile |
21112 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 21113 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 21114 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 21115 | struct symbol *sym = NULL; |
15d034d0 | 21116 | const char *name; |
c906108c SS |
21117 | struct attribute *attr = NULL; |
21118 | struct attribute *attr2 = NULL; | |
e142c38c | 21119 | CORE_ADDR baseaddr; |
e37fd15a SW |
21120 | struct pending **list_to_add = NULL; |
21121 | ||
edb3359d | 21122 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c DJ |
21123 | |
21124 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 21125 | |
94af9270 | 21126 | name = dwarf2_name (die, cu); |
c906108c SS |
21127 | if (name) |
21128 | { | |
94af9270 | 21129 | const char *linkagename; |
34eaf542 | 21130 | int suppress_add = 0; |
94af9270 | 21131 | |
34eaf542 TT |
21132 | if (space) |
21133 | sym = space; | |
21134 | else | |
e623cf5d | 21135 | sym = allocate_symbol (objfile); |
c906108c | 21136 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
21137 | |
21138 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
f85f34ed | 21139 | SYMBOL_SET_LANGUAGE (sym, cu->language, &objfile->objfile_obstack); |
94af9270 KS |
21140 | linkagename = dwarf2_physname (name, die, cu); |
21141 | SYMBOL_SET_NAMES (sym, linkagename, strlen (linkagename), 0, objfile); | |
c906108c | 21142 | |
f55ee35c JK |
21143 | /* Fortran does not have mangling standard and the mangling does differ |
21144 | between gfortran, iFort etc. */ | |
21145 | if (cu->language == language_fortran | |
b250c185 | 21146 | && symbol_get_demangled_name (&(sym->ginfo)) == NULL) |
29df156d | 21147 | symbol_set_demangled_name (&(sym->ginfo), |
cfc594ee | 21148 | dwarf2_full_name (name, die, cu), |
29df156d | 21149 | NULL); |
f55ee35c | 21150 | |
c906108c | 21151 | /* Default assumptions. |
c5aa993b | 21152 | Use the passed type or decode it from the die. */ |
176620f1 | 21153 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 21154 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
21155 | if (type != NULL) |
21156 | SYMBOL_TYPE (sym) = type; | |
21157 | else | |
e7c27a73 | 21158 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
21159 | attr = dwarf2_attr (die, |
21160 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
21161 | cu); | |
c906108c SS |
21162 | if (attr) |
21163 | { | |
21164 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
21165 | } | |
cb1df416 | 21166 | |
edb3359d DJ |
21167 | attr = dwarf2_attr (die, |
21168 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
21169 | cu); | |
cb1df416 DJ |
21170 | if (attr) |
21171 | { | |
ecfb656c | 21172 | file_name_index file_index = (file_name_index) DW_UNSND (attr); |
8c43009f | 21173 | struct file_entry *fe; |
9a619af0 | 21174 | |
ecfb656c PA |
21175 | if (cu->line_header != NULL) |
21176 | fe = cu->line_header->file_name_at (file_index); | |
8c43009f PA |
21177 | else |
21178 | fe = NULL; | |
21179 | ||
21180 | if (fe == NULL) | |
b98664d3 | 21181 | complaint (_("file index out of range")); |
8c43009f PA |
21182 | else |
21183 | symbol_set_symtab (sym, fe->symtab); | |
cb1df416 DJ |
21184 | } |
21185 | ||
c906108c SS |
21186 | switch (die->tag) |
21187 | { | |
21188 | case DW_TAG_label: | |
e142c38c | 21189 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c | 21190 | if (attr) |
3e29f34a MR |
21191 | { |
21192 | CORE_ADDR addr; | |
21193 | ||
21194 | addr = attr_value_as_address (attr); | |
21195 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr + baseaddr); | |
21196 | SYMBOL_VALUE_ADDRESS (sym) = addr; | |
21197 | } | |
0f5238ed TT |
21198 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
21199 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
f1e6e072 | 21200 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
0f5238ed | 21201 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
21202 | break; |
21203 | case DW_TAG_subprogram: | |
21204 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
21205 | finish_block. */ | |
f1e6e072 | 21206 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
e142c38c | 21207 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d JB |
21208 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
21209 | || cu->language == language_ada) | |
c906108c | 21210 | { |
2cfa0c8d JB |
21211 | /* Subprograms marked external are stored as a global symbol. |
21212 | Ada subprograms, whether marked external or not, are always | |
21213 | stored as a global symbol, because we want to be able to | |
21214 | access them globally. For instance, we want to be able | |
21215 | to break on a nested subprogram without having to | |
21216 | specify the context. */ | |
e37fd15a | 21217 | list_to_add = &global_symbols; |
c906108c SS |
21218 | } |
21219 | else | |
21220 | { | |
e37fd15a | 21221 | list_to_add = cu->list_in_scope; |
c906108c SS |
21222 | } |
21223 | break; | |
edb3359d DJ |
21224 | case DW_TAG_inlined_subroutine: |
21225 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
21226 | finish_block. */ | |
f1e6e072 | 21227 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
edb3359d | 21228 | SYMBOL_INLINED (sym) = 1; |
481860b3 | 21229 | list_to_add = cu->list_in_scope; |
edb3359d | 21230 | break; |
34eaf542 TT |
21231 | case DW_TAG_template_value_param: |
21232 | suppress_add = 1; | |
21233 | /* Fall through. */ | |
72929c62 | 21234 | case DW_TAG_constant: |
c906108c | 21235 | case DW_TAG_variable: |
254e6b9e | 21236 | case DW_TAG_member: |
0963b4bd MS |
21237 | /* Compilation with minimal debug info may result in |
21238 | variables with missing type entries. Change the | |
21239 | misleading `void' type to something sensible. */ | |
c906108c | 21240 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) |
46a4882b | 21241 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_int; |
64c50499 | 21242 | |
e142c38c | 21243 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
21244 | /* In the case of DW_TAG_member, we should only be called for |
21245 | static const members. */ | |
21246 | if (die->tag == DW_TAG_member) | |
21247 | { | |
3863f96c DE |
21248 | /* dwarf2_add_field uses die_is_declaration, |
21249 | so we do the same. */ | |
254e6b9e DE |
21250 | gdb_assert (die_is_declaration (die, cu)); |
21251 | gdb_assert (attr); | |
21252 | } | |
c906108c SS |
21253 | if (attr) |
21254 | { | |
e7c27a73 | 21255 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 21256 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 21257 | if (!suppress_add) |
34eaf542 TT |
21258 | { |
21259 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
e37fd15a | 21260 | list_to_add = &global_symbols; |
34eaf542 | 21261 | else |
e37fd15a | 21262 | list_to_add = cu->list_in_scope; |
34eaf542 | 21263 | } |
c906108c SS |
21264 | break; |
21265 | } | |
e142c38c | 21266 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
21267 | if (attr) |
21268 | { | |
e7c27a73 | 21269 | var_decode_location (attr, sym, cu); |
e142c38c | 21270 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
21271 | |
21272 | /* Fortran explicitly imports any global symbols to the local | |
21273 | scope by DW_TAG_common_block. */ | |
21274 | if (cu->language == language_fortran && die->parent | |
21275 | && die->parent->tag == DW_TAG_common_block) | |
21276 | attr2 = NULL; | |
21277 | ||
caac4577 JG |
21278 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
21279 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
21280 | && !dwarf2_per_objfile->has_section_at_zero) | |
21281 | { | |
21282 | /* When a static variable is eliminated by the linker, | |
21283 | the corresponding debug information is not stripped | |
21284 | out, but the variable address is set to null; | |
21285 | do not add such variables into symbol table. */ | |
21286 | } | |
21287 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 21288 | { |
f55ee35c JK |
21289 | /* Workaround gfortran PR debug/40040 - it uses |
21290 | DW_AT_location for variables in -fPIC libraries which may | |
21291 | get overriden by other libraries/executable and get | |
21292 | a different address. Resolve it by the minimal symbol | |
21293 | which may come from inferior's executable using copy | |
21294 | relocation. Make this workaround only for gfortran as for | |
21295 | other compilers GDB cannot guess the minimal symbol | |
21296 | Fortran mangling kind. */ | |
21297 | if (cu->language == language_fortran && die->parent | |
21298 | && die->parent->tag == DW_TAG_module | |
21299 | && cu->producer | |
28586665 | 21300 | && startswith (cu->producer, "GNU Fortran")) |
f1e6e072 | 21301 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
f55ee35c | 21302 | |
1c809c68 TT |
21303 | /* A variable with DW_AT_external is never static, |
21304 | but it may be block-scoped. */ | |
21305 | list_to_add = (cu->list_in_scope == &file_symbols | |
21306 | ? &global_symbols : cu->list_in_scope); | |
1c809c68 | 21307 | } |
c906108c | 21308 | else |
e37fd15a | 21309 | list_to_add = cu->list_in_scope; |
c906108c SS |
21310 | } |
21311 | else | |
21312 | { | |
21313 | /* We do not know the address of this symbol. | |
c5aa993b JM |
21314 | If it is an external symbol and we have type information |
21315 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
21316 | The address of the variable will then be determined from | |
21317 | the minimal symbol table whenever the variable is | |
21318 | referenced. */ | |
e142c38c | 21319 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
21320 | |
21321 | /* Fortran explicitly imports any global symbols to the local | |
21322 | scope by DW_TAG_common_block. */ | |
21323 | if (cu->language == language_fortran && die->parent | |
21324 | && die->parent->tag == DW_TAG_common_block) | |
21325 | { | |
21326 | /* SYMBOL_CLASS doesn't matter here because | |
21327 | read_common_block is going to reset it. */ | |
21328 | if (!suppress_add) | |
21329 | list_to_add = cu->list_in_scope; | |
21330 | } | |
21331 | else if (attr2 && (DW_UNSND (attr2) != 0) | |
21332 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) | |
c906108c | 21333 | { |
0fe7935b DJ |
21334 | /* A variable with DW_AT_external is never static, but it |
21335 | may be block-scoped. */ | |
21336 | list_to_add = (cu->list_in_scope == &file_symbols | |
21337 | ? &global_symbols : cu->list_in_scope); | |
21338 | ||
f1e6e072 | 21339 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
c906108c | 21340 | } |
442ddf59 JK |
21341 | else if (!die_is_declaration (die, cu)) |
21342 | { | |
21343 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
21344 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
21345 | if (!suppress_add) |
21346 | list_to_add = cu->list_in_scope; | |
442ddf59 | 21347 | } |
c906108c SS |
21348 | } |
21349 | break; | |
21350 | case DW_TAG_formal_parameter: | |
edb3359d DJ |
21351 | /* If we are inside a function, mark this as an argument. If |
21352 | not, we might be looking at an argument to an inlined function | |
21353 | when we do not have enough information to show inlined frames; | |
21354 | pretend it's a local variable in that case so that the user can | |
21355 | still see it. */ | |
21356 | if (context_stack_depth > 0 | |
21357 | && context_stack[context_stack_depth - 1].name != NULL) | |
21358 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
e142c38c | 21359 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
21360 | if (attr) |
21361 | { | |
e7c27a73 | 21362 | var_decode_location (attr, sym, cu); |
c906108c | 21363 | } |
e142c38c | 21364 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
21365 | if (attr) |
21366 | { | |
e7c27a73 | 21367 | dwarf2_const_value (attr, sym, cu); |
c906108c | 21368 | } |
f346a30d | 21369 | |
e37fd15a | 21370 | list_to_add = cu->list_in_scope; |
c906108c SS |
21371 | break; |
21372 | case DW_TAG_unspecified_parameters: | |
21373 | /* From varargs functions; gdb doesn't seem to have any | |
21374 | interest in this information, so just ignore it for now. | |
21375 | (FIXME?) */ | |
21376 | break; | |
34eaf542 TT |
21377 | case DW_TAG_template_type_param: |
21378 | suppress_add = 1; | |
21379 | /* Fall through. */ | |
c906108c | 21380 | case DW_TAG_class_type: |
680b30c7 | 21381 | case DW_TAG_interface_type: |
c906108c SS |
21382 | case DW_TAG_structure_type: |
21383 | case DW_TAG_union_type: | |
72019c9c | 21384 | case DW_TAG_set_type: |
c906108c | 21385 | case DW_TAG_enumeration_type: |
f1e6e072 | 21386 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 21387 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 21388 | |
63d06c5c | 21389 | { |
9c37b5ae | 21390 | /* NOTE: carlton/2003-11-10: C++ class symbols shouldn't |
63d06c5c DC |
21391 | really ever be static objects: otherwise, if you try |
21392 | to, say, break of a class's method and you're in a file | |
21393 | which doesn't mention that class, it won't work unless | |
21394 | the check for all static symbols in lookup_symbol_aux | |
21395 | saves you. See the OtherFileClass tests in | |
21396 | gdb.c++/namespace.exp. */ | |
21397 | ||
e37fd15a | 21398 | if (!suppress_add) |
34eaf542 | 21399 | { |
34eaf542 | 21400 | list_to_add = (cu->list_in_scope == &file_symbols |
9c37b5ae | 21401 | && cu->language == language_cplus |
34eaf542 | 21402 | ? &global_symbols : cu->list_in_scope); |
63d06c5c | 21403 | |
64382290 | 21404 | /* The semantics of C++ state that "struct foo { |
9c37b5ae | 21405 | ... }" also defines a typedef for "foo". */ |
64382290 | 21406 | if (cu->language == language_cplus |
45280282 | 21407 | || cu->language == language_ada |
c44af4eb TT |
21408 | || cu->language == language_d |
21409 | || cu->language == language_rust) | |
64382290 TT |
21410 | { |
21411 | /* The symbol's name is already allocated along | |
21412 | with this objfile, so we don't need to | |
21413 | duplicate it for the type. */ | |
21414 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
21415 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_SEARCH_NAME (sym); | |
21416 | } | |
63d06c5c DC |
21417 | } |
21418 | } | |
c906108c SS |
21419 | break; |
21420 | case DW_TAG_typedef: | |
f1e6e072 | 21421 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
63d06c5c | 21422 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 21423 | list_to_add = cu->list_in_scope; |
63d06c5c | 21424 | break; |
c906108c | 21425 | case DW_TAG_base_type: |
a02abb62 | 21426 | case DW_TAG_subrange_type: |
f1e6e072 | 21427 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 21428 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 21429 | list_to_add = cu->list_in_scope; |
c906108c SS |
21430 | break; |
21431 | case DW_TAG_enumerator: | |
e142c38c | 21432 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
21433 | if (attr) |
21434 | { | |
e7c27a73 | 21435 | dwarf2_const_value (attr, sym, cu); |
c906108c | 21436 | } |
63d06c5c DC |
21437 | { |
21438 | /* NOTE: carlton/2003-11-10: See comment above in the | |
21439 | DW_TAG_class_type, etc. block. */ | |
21440 | ||
e142c38c | 21441 | list_to_add = (cu->list_in_scope == &file_symbols |
9c37b5ae | 21442 | && cu->language == language_cplus |
e142c38c | 21443 | ? &global_symbols : cu->list_in_scope); |
63d06c5c | 21444 | } |
c906108c | 21445 | break; |
74921315 | 21446 | case DW_TAG_imported_declaration: |
5c4e30ca | 21447 | case DW_TAG_namespace: |
f1e6e072 | 21448 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
e37fd15a | 21449 | list_to_add = &global_symbols; |
5c4e30ca | 21450 | break; |
530e8392 KB |
21451 | case DW_TAG_module: |
21452 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; | |
21453 | SYMBOL_DOMAIN (sym) = MODULE_DOMAIN; | |
21454 | list_to_add = &global_symbols; | |
21455 | break; | |
4357ac6c | 21456 | case DW_TAG_common_block: |
f1e6e072 | 21457 | SYMBOL_ACLASS_INDEX (sym) = LOC_COMMON_BLOCK; |
4357ac6c TT |
21458 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; |
21459 | add_symbol_to_list (sym, cu->list_in_scope); | |
21460 | break; | |
c906108c SS |
21461 | default: |
21462 | /* Not a tag we recognize. Hopefully we aren't processing | |
21463 | trash data, but since we must specifically ignore things | |
21464 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 21465 | this point. */ |
b98664d3 | 21466 | complaint (_("unsupported tag: '%s'"), |
4d3c2250 | 21467 | dwarf_tag_name (die->tag)); |
c906108c SS |
21468 | break; |
21469 | } | |
df8a16a1 | 21470 | |
e37fd15a SW |
21471 | if (suppress_add) |
21472 | { | |
21473 | sym->hash_next = objfile->template_symbols; | |
21474 | objfile->template_symbols = sym; | |
21475 | list_to_add = NULL; | |
21476 | } | |
21477 | ||
21478 | if (list_to_add != NULL) | |
21479 | add_symbol_to_list (sym, list_to_add); | |
21480 | ||
df8a16a1 DJ |
21481 | /* For the benefit of old versions of GCC, check for anonymous |
21482 | namespaces based on the demangled name. */ | |
4d4ec4e5 | 21483 | if (!cu->processing_has_namespace_info |
94af9270 | 21484 | && cu->language == language_cplus) |
a10964d1 | 21485 | cp_scan_for_anonymous_namespaces (sym, objfile); |
c906108c SS |
21486 | } |
21487 | return (sym); | |
21488 | } | |
21489 | ||
98bfdba5 PA |
21490 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
21491 | zero-extend it as appropriate for the symbol's type. The DWARF | |
21492 | standard (v4) is not entirely clear about the meaning of using | |
21493 | DW_FORM_dataN for a constant with a signed type, where the type is | |
21494 | wider than the data. The conclusion of a discussion on the DWARF | |
21495 | list was that this is unspecified. We choose to always zero-extend | |
21496 | because that is the interpretation long in use by GCC. */ | |
c906108c | 21497 | |
98bfdba5 | 21498 | static gdb_byte * |
ff39bb5e | 21499 | dwarf2_const_value_data (const struct attribute *attr, struct obstack *obstack, |
12df843f | 21500 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 21501 | { |
518817b3 | 21502 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e17a4113 UW |
21503 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
21504 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
21505 | LONGEST l = DW_UNSND (attr); |
21506 | ||
21507 | if (bits < sizeof (*value) * 8) | |
21508 | { | |
21509 | l &= ((LONGEST) 1 << bits) - 1; | |
21510 | *value = l; | |
21511 | } | |
21512 | else if (bits == sizeof (*value) * 8) | |
21513 | *value = l; | |
21514 | else | |
21515 | { | |
224c3ddb | 21516 | gdb_byte *bytes = (gdb_byte *) obstack_alloc (obstack, bits / 8); |
98bfdba5 PA |
21517 | store_unsigned_integer (bytes, bits / 8, byte_order, l); |
21518 | return bytes; | |
21519 | } | |
21520 | ||
21521 | return NULL; | |
21522 | } | |
21523 | ||
21524 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
21525 | the value does not fit in *VALUE, set *BYTES - either already | |
21526 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
21527 | or, set *BATON, if we translated the constant to a location | |
21528 | expression. */ | |
21529 | ||
21530 | static void | |
ff39bb5e | 21531 | dwarf2_const_value_attr (const struct attribute *attr, struct type *type, |
98bfdba5 PA |
21532 | const char *name, struct obstack *obstack, |
21533 | struct dwarf2_cu *cu, | |
d521ce57 | 21534 | LONGEST *value, const gdb_byte **bytes, |
98bfdba5 PA |
21535 | struct dwarf2_locexpr_baton **baton) |
21536 | { | |
518817b3 | 21537 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
98bfdba5 | 21538 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 21539 | struct dwarf_block *blk; |
98bfdba5 PA |
21540 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
21541 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
21542 | ||
21543 | *value = 0; | |
21544 | *bytes = NULL; | |
21545 | *baton = NULL; | |
c906108c SS |
21546 | |
21547 | switch (attr->form) | |
21548 | { | |
21549 | case DW_FORM_addr: | |
3019eac3 | 21550 | case DW_FORM_GNU_addr_index: |
ac56253d | 21551 | { |
ac56253d TT |
21552 | gdb_byte *data; |
21553 | ||
98bfdba5 PA |
21554 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
21555 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 21556 | cu_header->addr_size, |
98bfdba5 | 21557 | TYPE_LENGTH (type)); |
ac56253d TT |
21558 | /* Symbols of this form are reasonably rare, so we just |
21559 | piggyback on the existing location code rather than writing | |
21560 | a new implementation of symbol_computed_ops. */ | |
8d749320 | 21561 | *baton = XOBNEW (obstack, struct dwarf2_locexpr_baton); |
98bfdba5 PA |
21562 | (*baton)->per_cu = cu->per_cu; |
21563 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 21564 | |
98bfdba5 | 21565 | (*baton)->size = 2 + cu_header->addr_size; |
224c3ddb | 21566 | data = (gdb_byte *) obstack_alloc (obstack, (*baton)->size); |
98bfdba5 | 21567 | (*baton)->data = data; |
ac56253d TT |
21568 | |
21569 | data[0] = DW_OP_addr; | |
21570 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
21571 | byte_order, DW_ADDR (attr)); | |
21572 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 21573 | } |
c906108c | 21574 | break; |
4ac36638 | 21575 | case DW_FORM_string: |
93b5768b | 21576 | case DW_FORM_strp: |
3019eac3 | 21577 | case DW_FORM_GNU_str_index: |
36586728 | 21578 | case DW_FORM_GNU_strp_alt: |
98bfdba5 PA |
21579 | /* DW_STRING is already allocated on the objfile obstack, point |
21580 | directly to it. */ | |
d521ce57 | 21581 | *bytes = (const gdb_byte *) DW_STRING (attr); |
93b5768b | 21582 | break; |
c906108c SS |
21583 | case DW_FORM_block1: |
21584 | case DW_FORM_block2: | |
21585 | case DW_FORM_block4: | |
21586 | case DW_FORM_block: | |
2dc7f7b3 | 21587 | case DW_FORM_exprloc: |
0224619f | 21588 | case DW_FORM_data16: |
c906108c | 21589 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
21590 | if (TYPE_LENGTH (type) != blk->size) |
21591 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
21592 | TYPE_LENGTH (type)); | |
21593 | *bytes = blk->data; | |
c906108c | 21594 | break; |
2df3850c JM |
21595 | |
21596 | /* The DW_AT_const_value attributes are supposed to carry the | |
21597 | symbol's value "represented as it would be on the target | |
21598 | architecture." By the time we get here, it's already been | |
21599 | converted to host endianness, so we just need to sign- or | |
21600 | zero-extend it as appropriate. */ | |
21601 | case DW_FORM_data1: | |
3aef2284 | 21602 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 8); |
2df3850c | 21603 | break; |
c906108c | 21604 | case DW_FORM_data2: |
3aef2284 | 21605 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 16); |
2df3850c | 21606 | break; |
c906108c | 21607 | case DW_FORM_data4: |
3aef2284 | 21608 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 32); |
2df3850c | 21609 | break; |
c906108c | 21610 | case DW_FORM_data8: |
3aef2284 | 21611 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 64); |
2df3850c JM |
21612 | break; |
21613 | ||
c906108c | 21614 | case DW_FORM_sdata: |
663c44ac | 21615 | case DW_FORM_implicit_const: |
98bfdba5 | 21616 | *value = DW_SND (attr); |
2df3850c JM |
21617 | break; |
21618 | ||
c906108c | 21619 | case DW_FORM_udata: |
98bfdba5 | 21620 | *value = DW_UNSND (attr); |
c906108c | 21621 | break; |
2df3850c | 21622 | |
c906108c | 21623 | default: |
b98664d3 | 21624 | complaint (_("unsupported const value attribute form: '%s'"), |
4d3c2250 | 21625 | dwarf_form_name (attr->form)); |
98bfdba5 | 21626 | *value = 0; |
c906108c SS |
21627 | break; |
21628 | } | |
21629 | } | |
21630 | ||
2df3850c | 21631 | |
98bfdba5 PA |
21632 | /* Copy constant value from an attribute to a symbol. */ |
21633 | ||
2df3850c | 21634 | static void |
ff39bb5e | 21635 | dwarf2_const_value (const struct attribute *attr, struct symbol *sym, |
98bfdba5 | 21636 | struct dwarf2_cu *cu) |
2df3850c | 21637 | { |
518817b3 | 21638 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
12df843f | 21639 | LONGEST value; |
d521ce57 | 21640 | const gdb_byte *bytes; |
98bfdba5 | 21641 | struct dwarf2_locexpr_baton *baton; |
2df3850c | 21642 | |
98bfdba5 PA |
21643 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
21644 | SYMBOL_PRINT_NAME (sym), | |
21645 | &objfile->objfile_obstack, cu, | |
21646 | &value, &bytes, &baton); | |
2df3850c | 21647 | |
98bfdba5 PA |
21648 | if (baton != NULL) |
21649 | { | |
98bfdba5 | 21650 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 21651 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
98bfdba5 PA |
21652 | } |
21653 | else if (bytes != NULL) | |
21654 | { | |
21655 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
f1e6e072 | 21656 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
98bfdba5 PA |
21657 | } |
21658 | else | |
21659 | { | |
21660 | SYMBOL_VALUE (sym) = value; | |
f1e6e072 | 21661 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
98bfdba5 | 21662 | } |
2df3850c JM |
21663 | } |
21664 | ||
c906108c SS |
21665 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
21666 | ||
21667 | static struct type * | |
e7c27a73 | 21668 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21669 | { |
c906108c | 21670 | struct attribute *type_attr; |
c906108c | 21671 | |
e142c38c | 21672 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
21673 | if (!type_attr) |
21674 | { | |
518817b3 | 21675 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 21676 | /* A missing DW_AT_type represents a void type. */ |
518817b3 | 21677 | return objfile_type (objfile)->builtin_void; |
c906108c | 21678 | } |
348e048f | 21679 | |
673bfd45 | 21680 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
21681 | } |
21682 | ||
b4ba55a1 JB |
21683 | /* True iff CU's producer generates GNAT Ada auxiliary information |
21684 | that allows to find parallel types through that information instead | |
21685 | of having to do expensive parallel lookups by type name. */ | |
21686 | ||
21687 | static int | |
21688 | need_gnat_info (struct dwarf2_cu *cu) | |
21689 | { | |
de4cb04a JB |
21690 | /* Assume that the Ada compiler was GNAT, which always produces |
21691 | the auxiliary information. */ | |
21692 | return (cu->language == language_ada); | |
b4ba55a1 JB |
21693 | } |
21694 | ||
b4ba55a1 JB |
21695 | /* Return the auxiliary type of the die in question using its |
21696 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
21697 | attribute is not present. */ | |
21698 | ||
21699 | static struct type * | |
21700 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
21701 | { | |
b4ba55a1 | 21702 | struct attribute *type_attr; |
b4ba55a1 JB |
21703 | |
21704 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
21705 | if (!type_attr) | |
21706 | return NULL; | |
21707 | ||
673bfd45 | 21708 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
21709 | } |
21710 | ||
21711 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
21712 | descriptive type accordingly. */ | |
21713 | ||
21714 | static void | |
21715 | set_descriptive_type (struct type *type, struct die_info *die, | |
21716 | struct dwarf2_cu *cu) | |
21717 | { | |
21718 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
21719 | ||
21720 | if (descriptive_type) | |
21721 | { | |
21722 | ALLOCATE_GNAT_AUX_TYPE (type); | |
21723 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
21724 | } | |
21725 | } | |
21726 | ||
c906108c SS |
21727 | /* Return the containing type of the die in question using its |
21728 | DW_AT_containing_type attribute. */ | |
21729 | ||
21730 | static struct type * | |
e7c27a73 | 21731 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21732 | { |
c906108c | 21733 | struct attribute *type_attr; |
518817b3 | 21734 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 21735 | |
e142c38c | 21736 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
21737 | if (!type_attr) |
21738 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
518817b3 | 21739 | "[in module %s]"), objfile_name (objfile)); |
33ac96f0 | 21740 | |
673bfd45 | 21741 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
21742 | } |
21743 | ||
ac9ec31b DE |
21744 | /* Return an error marker type to use for the ill formed type in DIE/CU. */ |
21745 | ||
21746 | static struct type * | |
21747 | build_error_marker_type (struct dwarf2_cu *cu, struct die_info *die) | |
21748 | { | |
518817b3 SM |
21749 | struct dwarf2_per_objfile *dwarf2_per_objfile |
21750 | = cu->per_cu->dwarf2_per_objfile; | |
ac9ec31b DE |
21751 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
21752 | char *message, *saved; | |
21753 | ||
9d8780f0 | 21754 | message = xstrprintf (_("<unknown type in %s, CU %s, DIE %s>"), |
4262abfb | 21755 | objfile_name (objfile), |
9d8780f0 SM |
21756 | sect_offset_str (cu->header.sect_off), |
21757 | sect_offset_str (die->sect_off)); | |
224c3ddb SM |
21758 | saved = (char *) obstack_copy0 (&objfile->objfile_obstack, |
21759 | message, strlen (message)); | |
ac9ec31b DE |
21760 | xfree (message); |
21761 | ||
19f392bc | 21762 | return init_type (objfile, TYPE_CODE_ERROR, 0, saved); |
ac9ec31b DE |
21763 | } |
21764 | ||
673bfd45 | 21765 | /* Look up the type of DIE in CU using its type attribute ATTR. |
ac9ec31b DE |
21766 | ATTR must be one of: DW_AT_type, DW_AT_GNAT_descriptive_type, |
21767 | DW_AT_containing_type. | |
673bfd45 DE |
21768 | If there is no type substitute an error marker. */ |
21769 | ||
c906108c | 21770 | static struct type * |
ff39bb5e | 21771 | lookup_die_type (struct die_info *die, const struct attribute *attr, |
673bfd45 | 21772 | struct dwarf2_cu *cu) |
c906108c | 21773 | { |
518817b3 SM |
21774 | struct dwarf2_per_objfile *dwarf2_per_objfile |
21775 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 21776 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
f792889a DJ |
21777 | struct type *this_type; |
21778 | ||
ac9ec31b DE |
21779 | gdb_assert (attr->name == DW_AT_type |
21780 | || attr->name == DW_AT_GNAT_descriptive_type | |
21781 | || attr->name == DW_AT_containing_type); | |
21782 | ||
673bfd45 DE |
21783 | /* First see if we have it cached. */ |
21784 | ||
36586728 TT |
21785 | if (attr->form == DW_FORM_GNU_ref_alt) |
21786 | { | |
21787 | struct dwarf2_per_cu_data *per_cu; | |
9c541725 | 21788 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
36586728 | 21789 | |
ed2dc618 SM |
21790 | per_cu = dwarf2_find_containing_comp_unit (sect_off, 1, |
21791 | dwarf2_per_objfile); | |
9c541725 | 21792 | this_type = get_die_type_at_offset (sect_off, per_cu); |
36586728 | 21793 | } |
7771576e | 21794 | else if (attr_form_is_ref (attr)) |
673bfd45 | 21795 | { |
9c541725 | 21796 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
673bfd45 | 21797 | |
9c541725 | 21798 | this_type = get_die_type_at_offset (sect_off, cu->per_cu); |
673bfd45 | 21799 | } |
55f1336d | 21800 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 | 21801 | { |
ac9ec31b | 21802 | ULONGEST signature = DW_SIGNATURE (attr); |
673bfd45 | 21803 | |
ac9ec31b | 21804 | return get_signatured_type (die, signature, cu); |
673bfd45 DE |
21805 | } |
21806 | else | |
21807 | { | |
b98664d3 | 21808 | complaint (_("Dwarf Error: Bad type attribute %s in DIE" |
9d8780f0 SM |
21809 | " at %s [in module %s]"), |
21810 | dwarf_attr_name (attr->name), sect_offset_str (die->sect_off), | |
4262abfb | 21811 | objfile_name (objfile)); |
ac9ec31b | 21812 | return build_error_marker_type (cu, die); |
673bfd45 DE |
21813 | } |
21814 | ||
21815 | /* If not cached we need to read it in. */ | |
21816 | ||
21817 | if (this_type == NULL) | |
21818 | { | |
ac9ec31b | 21819 | struct die_info *type_die = NULL; |
673bfd45 DE |
21820 | struct dwarf2_cu *type_cu = cu; |
21821 | ||
7771576e | 21822 | if (attr_form_is_ref (attr)) |
ac9ec31b DE |
21823 | type_die = follow_die_ref (die, attr, &type_cu); |
21824 | if (type_die == NULL) | |
21825 | return build_error_marker_type (cu, die); | |
21826 | /* If we find the type now, it's probably because the type came | |
3019eac3 DE |
21827 | from an inter-CU reference and the type's CU got expanded before |
21828 | ours. */ | |
ac9ec31b | 21829 | this_type = read_type_die (type_die, type_cu); |
673bfd45 DE |
21830 | } |
21831 | ||
21832 | /* If we still don't have a type use an error marker. */ | |
21833 | ||
21834 | if (this_type == NULL) | |
ac9ec31b | 21835 | return build_error_marker_type (cu, die); |
673bfd45 | 21836 | |
f792889a | 21837 | return this_type; |
c906108c SS |
21838 | } |
21839 | ||
673bfd45 DE |
21840 | /* Return the type in DIE, CU. |
21841 | Returns NULL for invalid types. | |
21842 | ||
02142a6c | 21843 | This first does a lookup in die_type_hash, |
673bfd45 DE |
21844 | and only reads the die in if necessary. |
21845 | ||
21846 | NOTE: This can be called when reading in partial or full symbols. */ | |
21847 | ||
f792889a | 21848 | static struct type * |
e7c27a73 | 21849 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21850 | { |
f792889a DJ |
21851 | struct type *this_type; |
21852 | ||
21853 | this_type = get_die_type (die, cu); | |
21854 | if (this_type) | |
21855 | return this_type; | |
21856 | ||
673bfd45 DE |
21857 | return read_type_die_1 (die, cu); |
21858 | } | |
21859 | ||
21860 | /* Read the type in DIE, CU. | |
21861 | Returns NULL for invalid types. */ | |
21862 | ||
21863 | static struct type * | |
21864 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
21865 | { | |
21866 | struct type *this_type = NULL; | |
21867 | ||
c906108c SS |
21868 | switch (die->tag) |
21869 | { | |
21870 | case DW_TAG_class_type: | |
680b30c7 | 21871 | case DW_TAG_interface_type: |
c906108c SS |
21872 | case DW_TAG_structure_type: |
21873 | case DW_TAG_union_type: | |
f792889a | 21874 | this_type = read_structure_type (die, cu); |
c906108c SS |
21875 | break; |
21876 | case DW_TAG_enumeration_type: | |
f792889a | 21877 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
21878 | break; |
21879 | case DW_TAG_subprogram: | |
21880 | case DW_TAG_subroutine_type: | |
edb3359d | 21881 | case DW_TAG_inlined_subroutine: |
f792889a | 21882 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
21883 | break; |
21884 | case DW_TAG_array_type: | |
f792889a | 21885 | this_type = read_array_type (die, cu); |
c906108c | 21886 | break; |
72019c9c | 21887 | case DW_TAG_set_type: |
f792889a | 21888 | this_type = read_set_type (die, cu); |
72019c9c | 21889 | break; |
c906108c | 21890 | case DW_TAG_pointer_type: |
f792889a | 21891 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
21892 | break; |
21893 | case DW_TAG_ptr_to_member_type: | |
f792889a | 21894 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
21895 | break; |
21896 | case DW_TAG_reference_type: | |
4297a3f0 AV |
21897 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_REF); |
21898 | break; | |
21899 | case DW_TAG_rvalue_reference_type: | |
21900 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_RVALUE_REF); | |
c906108c SS |
21901 | break; |
21902 | case DW_TAG_const_type: | |
f792889a | 21903 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
21904 | break; |
21905 | case DW_TAG_volatile_type: | |
f792889a | 21906 | this_type = read_tag_volatile_type (die, cu); |
c906108c | 21907 | break; |
06d66ee9 TT |
21908 | case DW_TAG_restrict_type: |
21909 | this_type = read_tag_restrict_type (die, cu); | |
21910 | break; | |
c906108c | 21911 | case DW_TAG_string_type: |
f792889a | 21912 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
21913 | break; |
21914 | case DW_TAG_typedef: | |
f792889a | 21915 | this_type = read_typedef (die, cu); |
c906108c | 21916 | break; |
a02abb62 | 21917 | case DW_TAG_subrange_type: |
f792889a | 21918 | this_type = read_subrange_type (die, cu); |
a02abb62 | 21919 | break; |
c906108c | 21920 | case DW_TAG_base_type: |
f792889a | 21921 | this_type = read_base_type (die, cu); |
c906108c | 21922 | break; |
81a17f79 | 21923 | case DW_TAG_unspecified_type: |
f792889a | 21924 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 21925 | break; |
0114d602 DJ |
21926 | case DW_TAG_namespace: |
21927 | this_type = read_namespace_type (die, cu); | |
21928 | break; | |
f55ee35c JK |
21929 | case DW_TAG_module: |
21930 | this_type = read_module_type (die, cu); | |
21931 | break; | |
a2c2acaf MW |
21932 | case DW_TAG_atomic_type: |
21933 | this_type = read_tag_atomic_type (die, cu); | |
21934 | break; | |
c906108c | 21935 | default: |
b98664d3 | 21936 | complaint (_("unexpected tag in read_type_die: '%s'"), |
4d3c2250 | 21937 | dwarf_tag_name (die->tag)); |
c906108c SS |
21938 | break; |
21939 | } | |
63d06c5c | 21940 | |
f792889a | 21941 | return this_type; |
63d06c5c DC |
21942 | } |
21943 | ||
abc72ce4 DE |
21944 | /* See if we can figure out if the class lives in a namespace. We do |
21945 | this by looking for a member function; its demangled name will | |
21946 | contain namespace info, if there is any. | |
21947 | Return the computed name or NULL. | |
21948 | Space for the result is allocated on the objfile's obstack. | |
21949 | This is the full-die version of guess_partial_die_structure_name. | |
21950 | In this case we know DIE has no useful parent. */ | |
21951 | ||
21952 | static char * | |
21953 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) | |
21954 | { | |
21955 | struct die_info *spec_die; | |
21956 | struct dwarf2_cu *spec_cu; | |
21957 | struct die_info *child; | |
518817b3 | 21958 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
abc72ce4 DE |
21959 | |
21960 | spec_cu = cu; | |
21961 | spec_die = die_specification (die, &spec_cu); | |
21962 | if (spec_die != NULL) | |
21963 | { | |
21964 | die = spec_die; | |
21965 | cu = spec_cu; | |
21966 | } | |
21967 | ||
21968 | for (child = die->child; | |
21969 | child != NULL; | |
21970 | child = child->sibling) | |
21971 | { | |
21972 | if (child->tag == DW_TAG_subprogram) | |
21973 | { | |
73b9be8b | 21974 | const char *linkage_name = dw2_linkage_name (child, cu); |
abc72ce4 | 21975 | |
7d45c7c3 | 21976 | if (linkage_name != NULL) |
abc72ce4 DE |
21977 | { |
21978 | char *actual_name | |
21979 | = language_class_name_from_physname (cu->language_defn, | |
7d45c7c3 | 21980 | linkage_name); |
abc72ce4 DE |
21981 | char *name = NULL; |
21982 | ||
21983 | if (actual_name != NULL) | |
21984 | { | |
15d034d0 | 21985 | const char *die_name = dwarf2_name (die, cu); |
abc72ce4 DE |
21986 | |
21987 | if (die_name != NULL | |
21988 | && strcmp (die_name, actual_name) != 0) | |
21989 | { | |
21990 | /* Strip off the class name from the full name. | |
21991 | We want the prefix. */ | |
21992 | int die_name_len = strlen (die_name); | |
21993 | int actual_name_len = strlen (actual_name); | |
21994 | ||
21995 | /* Test for '::' as a sanity check. */ | |
21996 | if (actual_name_len > die_name_len + 2 | |
3e43a32a MS |
21997 | && actual_name[actual_name_len |
21998 | - die_name_len - 1] == ':') | |
224c3ddb | 21999 | name = (char *) obstack_copy0 ( |
e3b94546 | 22000 | &objfile->per_bfd->storage_obstack, |
224c3ddb | 22001 | actual_name, actual_name_len - die_name_len - 2); |
abc72ce4 DE |
22002 | } |
22003 | } | |
22004 | xfree (actual_name); | |
22005 | return name; | |
22006 | } | |
22007 | } | |
22008 | } | |
22009 | ||
22010 | return NULL; | |
22011 | } | |
22012 | ||
96408a79 SA |
22013 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
22014 | prefix part in such case. See | |
22015 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
22016 | ||
a121b7c1 | 22017 | static const char * |
96408a79 SA |
22018 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) |
22019 | { | |
22020 | struct attribute *attr; | |
e6a959d6 | 22021 | const char *base; |
96408a79 SA |
22022 | |
22023 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
22024 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
22025 | return NULL; | |
22026 | ||
7d45c7c3 | 22027 | if (dwarf2_string_attr (die, DW_AT_name, cu) != NULL) |
96408a79 SA |
22028 | return NULL; |
22029 | ||
73b9be8b | 22030 | attr = dw2_linkage_name_attr (die, cu); |
96408a79 SA |
22031 | if (attr == NULL || DW_STRING (attr) == NULL) |
22032 | return NULL; | |
22033 | ||
22034 | /* dwarf2_name had to be already called. */ | |
22035 | gdb_assert (DW_STRING_IS_CANONICAL (attr)); | |
22036 | ||
22037 | /* Strip the base name, keep any leading namespaces/classes. */ | |
22038 | base = strrchr (DW_STRING (attr), ':'); | |
22039 | if (base == NULL || base == DW_STRING (attr) || base[-1] != ':') | |
22040 | return ""; | |
22041 | ||
518817b3 | 22042 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e3b94546 | 22043 | return (char *) obstack_copy0 (&objfile->per_bfd->storage_obstack, |
224c3ddb SM |
22044 | DW_STRING (attr), |
22045 | &base[-1] - DW_STRING (attr)); | |
96408a79 SA |
22046 | } |
22047 | ||
fdde2d81 | 22048 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 22049 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 22050 | |
0114d602 DJ |
22051 | For example, if we're within the method foo() in the following |
22052 | code: | |
22053 | ||
22054 | namespace N { | |
22055 | class C { | |
22056 | void foo () { | |
22057 | } | |
22058 | }; | |
22059 | } | |
22060 | ||
22061 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 22062 | |
0d5cff50 | 22063 | static const char * |
e142c38c | 22064 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 22065 | { |
518817b3 SM |
22066 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22067 | = cu->per_cu->dwarf2_per_objfile; | |
0114d602 DJ |
22068 | struct die_info *parent, *spec_die; |
22069 | struct dwarf2_cu *spec_cu; | |
22070 | struct type *parent_type; | |
a121b7c1 | 22071 | const char *retval; |
63d06c5c | 22072 | |
9c37b5ae | 22073 | if (cu->language != language_cplus |
c44af4eb TT |
22074 | && cu->language != language_fortran && cu->language != language_d |
22075 | && cu->language != language_rust) | |
0114d602 DJ |
22076 | return ""; |
22077 | ||
96408a79 SA |
22078 | retval = anonymous_struct_prefix (die, cu); |
22079 | if (retval) | |
22080 | return retval; | |
22081 | ||
0114d602 DJ |
22082 | /* We have to be careful in the presence of DW_AT_specification. |
22083 | For example, with GCC 3.4, given the code | |
22084 | ||
22085 | namespace N { | |
22086 | void foo() { | |
22087 | // Definition of N::foo. | |
22088 | } | |
22089 | } | |
22090 | ||
22091 | then we'll have a tree of DIEs like this: | |
22092 | ||
22093 | 1: DW_TAG_compile_unit | |
22094 | 2: DW_TAG_namespace // N | |
22095 | 3: DW_TAG_subprogram // declaration of N::foo | |
22096 | 4: DW_TAG_subprogram // definition of N::foo | |
22097 | DW_AT_specification // refers to die #3 | |
22098 | ||
22099 | Thus, when processing die #4, we have to pretend that we're in | |
22100 | the context of its DW_AT_specification, namely the contex of die | |
22101 | #3. */ | |
22102 | spec_cu = cu; | |
22103 | spec_die = die_specification (die, &spec_cu); | |
22104 | if (spec_die == NULL) | |
22105 | parent = die->parent; | |
22106 | else | |
63d06c5c | 22107 | { |
0114d602 DJ |
22108 | parent = spec_die->parent; |
22109 | cu = spec_cu; | |
63d06c5c | 22110 | } |
0114d602 DJ |
22111 | |
22112 | if (parent == NULL) | |
22113 | return ""; | |
98bfdba5 PA |
22114 | else if (parent->building_fullname) |
22115 | { | |
22116 | const char *name; | |
22117 | const char *parent_name; | |
22118 | ||
22119 | /* It has been seen on RealView 2.2 built binaries, | |
22120 | DW_TAG_template_type_param types actually _defined_ as | |
22121 | children of the parent class: | |
22122 | ||
22123 | enum E {}; | |
22124 | template class <class Enum> Class{}; | |
22125 | Class<enum E> class_e; | |
22126 | ||
22127 | 1: DW_TAG_class_type (Class) | |
22128 | 2: DW_TAG_enumeration_type (E) | |
22129 | 3: DW_TAG_enumerator (enum1:0) | |
22130 | 3: DW_TAG_enumerator (enum2:1) | |
22131 | ... | |
22132 | 2: DW_TAG_template_type_param | |
22133 | DW_AT_type DW_FORM_ref_udata (E) | |
22134 | ||
22135 | Besides being broken debug info, it can put GDB into an | |
22136 | infinite loop. Consider: | |
22137 | ||
22138 | When we're building the full name for Class<E>, we'll start | |
22139 | at Class, and go look over its template type parameters, | |
22140 | finding E. We'll then try to build the full name of E, and | |
22141 | reach here. We're now trying to build the full name of E, | |
22142 | and look over the parent DIE for containing scope. In the | |
22143 | broken case, if we followed the parent DIE of E, we'd again | |
22144 | find Class, and once again go look at its template type | |
22145 | arguments, etc., etc. Simply don't consider such parent die | |
22146 | as source-level parent of this die (it can't be, the language | |
22147 | doesn't allow it), and break the loop here. */ | |
22148 | name = dwarf2_name (die, cu); | |
22149 | parent_name = dwarf2_name (parent, cu); | |
b98664d3 | 22150 | complaint (_("template param type '%s' defined within parent '%s'"), |
98bfdba5 PA |
22151 | name ? name : "<unknown>", |
22152 | parent_name ? parent_name : "<unknown>"); | |
22153 | return ""; | |
22154 | } | |
63d06c5c | 22155 | else |
0114d602 DJ |
22156 | switch (parent->tag) |
22157 | { | |
63d06c5c | 22158 | case DW_TAG_namespace: |
0114d602 | 22159 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
22160 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
22161 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
22162 | Work around this problem here. */ | |
22163 | if (cu->language == language_cplus | |
e86ca25f | 22164 | && strcmp (TYPE_NAME (parent_type), "::") == 0) |
acebe513 | 22165 | return ""; |
0114d602 | 22166 | /* We give a name to even anonymous namespaces. */ |
e86ca25f | 22167 | return TYPE_NAME (parent_type); |
63d06c5c | 22168 | case DW_TAG_class_type: |
680b30c7 | 22169 | case DW_TAG_interface_type: |
63d06c5c | 22170 | case DW_TAG_structure_type: |
0114d602 | 22171 | case DW_TAG_union_type: |
f55ee35c | 22172 | case DW_TAG_module: |
0114d602 | 22173 | parent_type = read_type_die (parent, cu); |
e86ca25f TT |
22174 | if (TYPE_NAME (parent_type) != NULL) |
22175 | return TYPE_NAME (parent_type); | |
0114d602 DJ |
22176 | else |
22177 | /* An anonymous structure is only allowed non-static data | |
22178 | members; no typedefs, no member functions, et cetera. | |
22179 | So it does not need a prefix. */ | |
22180 | return ""; | |
abc72ce4 | 22181 | case DW_TAG_compile_unit: |
95554aad | 22182 | case DW_TAG_partial_unit: |
abc72ce4 DE |
22183 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
22184 | if (cu->language == language_cplus | |
8b70b953 | 22185 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
22186 | && die->child != NULL |
22187 | && (die->tag == DW_TAG_class_type | |
22188 | || die->tag == DW_TAG_structure_type | |
22189 | || die->tag == DW_TAG_union_type)) | |
22190 | { | |
22191 | char *name = guess_full_die_structure_name (die, cu); | |
22192 | if (name != NULL) | |
22193 | return name; | |
22194 | } | |
22195 | return ""; | |
3d567982 TT |
22196 | case DW_TAG_enumeration_type: |
22197 | parent_type = read_type_die (parent, cu); | |
22198 | if (TYPE_DECLARED_CLASS (parent_type)) | |
22199 | { | |
e86ca25f TT |
22200 | if (TYPE_NAME (parent_type) != NULL) |
22201 | return TYPE_NAME (parent_type); | |
3d567982 TT |
22202 | return ""; |
22203 | } | |
22204 | /* Fall through. */ | |
63d06c5c | 22205 | default: |
8176b9b8 | 22206 | return determine_prefix (parent, cu); |
63d06c5c | 22207 | } |
63d06c5c DC |
22208 | } |
22209 | ||
3e43a32a MS |
22210 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
22211 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
22212 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
22213 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
22214 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 22215 | |
f55ee35c | 22216 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
22217 | |
22218 | static char * | |
f55ee35c JK |
22219 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
22220 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 22221 | { |
f55ee35c | 22222 | const char *lead = ""; |
5c315b68 | 22223 | const char *sep; |
63d06c5c | 22224 | |
3e43a32a MS |
22225 | if (suffix == NULL || suffix[0] == '\0' |
22226 | || prefix == NULL || prefix[0] == '\0') | |
987504bb | 22227 | sep = ""; |
45280282 IB |
22228 | else if (cu->language == language_d) |
22229 | { | |
22230 | /* For D, the 'main' function could be defined in any module, but it | |
22231 | should never be prefixed. */ | |
22232 | if (strcmp (suffix, "D main") == 0) | |
22233 | { | |
22234 | prefix = ""; | |
22235 | sep = ""; | |
22236 | } | |
22237 | else | |
22238 | sep = "."; | |
22239 | } | |
f55ee35c JK |
22240 | else if (cu->language == language_fortran && physname) |
22241 | { | |
22242 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
22243 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
22244 | ||
22245 | lead = "__"; | |
22246 | sep = "_MOD_"; | |
22247 | } | |
987504bb JJ |
22248 | else |
22249 | sep = "::"; | |
63d06c5c | 22250 | |
6dd47d34 DE |
22251 | if (prefix == NULL) |
22252 | prefix = ""; | |
22253 | if (suffix == NULL) | |
22254 | suffix = ""; | |
22255 | ||
987504bb JJ |
22256 | if (obs == NULL) |
22257 | { | |
3e43a32a | 22258 | char *retval |
224c3ddb SM |
22259 | = ((char *) |
22260 | xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1)); | |
9a619af0 | 22261 | |
f55ee35c JK |
22262 | strcpy (retval, lead); |
22263 | strcat (retval, prefix); | |
6dd47d34 DE |
22264 | strcat (retval, sep); |
22265 | strcat (retval, suffix); | |
63d06c5c DC |
22266 | return retval; |
22267 | } | |
987504bb JJ |
22268 | else |
22269 | { | |
22270 | /* We have an obstack. */ | |
f55ee35c | 22271 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 22272 | } |
63d06c5c DC |
22273 | } |
22274 | ||
c906108c SS |
22275 | /* Return sibling of die, NULL if no sibling. */ |
22276 | ||
f9aca02d | 22277 | static struct die_info * |
fba45db2 | 22278 | sibling_die (struct die_info *die) |
c906108c | 22279 | { |
639d11d3 | 22280 | return die->sibling; |
c906108c SS |
22281 | } |
22282 | ||
71c25dea TT |
22283 | /* Get name of a die, return NULL if not found. */ |
22284 | ||
15d034d0 TT |
22285 | static const char * |
22286 | dwarf2_canonicalize_name (const char *name, struct dwarf2_cu *cu, | |
71c25dea TT |
22287 | struct obstack *obstack) |
22288 | { | |
22289 | if (name && cu->language == language_cplus) | |
22290 | { | |
2f408ecb | 22291 | std::string canon_name = cp_canonicalize_string (name); |
71c25dea | 22292 | |
2f408ecb | 22293 | if (!canon_name.empty ()) |
71c25dea | 22294 | { |
2f408ecb PA |
22295 | if (canon_name != name) |
22296 | name = (const char *) obstack_copy0 (obstack, | |
22297 | canon_name.c_str (), | |
22298 | canon_name.length ()); | |
71c25dea TT |
22299 | } |
22300 | } | |
22301 | ||
22302 | return name; | |
c906108c SS |
22303 | } |
22304 | ||
96553a0c DE |
22305 | /* Get name of a die, return NULL if not found. |
22306 | Anonymous namespaces are converted to their magic string. */ | |
9219021c | 22307 | |
15d034d0 | 22308 | static const char * |
e142c38c | 22309 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
22310 | { |
22311 | struct attribute *attr; | |
518817b3 | 22312 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
9219021c | 22313 | |
e142c38c | 22314 | attr = dwarf2_attr (die, DW_AT_name, cu); |
53832f31 | 22315 | if ((!attr || !DW_STRING (attr)) |
96553a0c | 22316 | && die->tag != DW_TAG_namespace |
53832f31 TT |
22317 | && die->tag != DW_TAG_class_type |
22318 | && die->tag != DW_TAG_interface_type | |
22319 | && die->tag != DW_TAG_structure_type | |
22320 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
22321 | return NULL; |
22322 | ||
22323 | switch (die->tag) | |
22324 | { | |
22325 | case DW_TAG_compile_unit: | |
95554aad | 22326 | case DW_TAG_partial_unit: |
71c25dea TT |
22327 | /* Compilation units have a DW_AT_name that is a filename, not |
22328 | a source language identifier. */ | |
22329 | case DW_TAG_enumeration_type: | |
22330 | case DW_TAG_enumerator: | |
22331 | /* These tags always have simple identifiers already; no need | |
22332 | to canonicalize them. */ | |
22333 | return DW_STRING (attr); | |
907af001 | 22334 | |
96553a0c DE |
22335 | case DW_TAG_namespace: |
22336 | if (attr != NULL && DW_STRING (attr) != NULL) | |
22337 | return DW_STRING (attr); | |
22338 | return CP_ANONYMOUS_NAMESPACE_STR; | |
22339 | ||
907af001 UW |
22340 | case DW_TAG_class_type: |
22341 | case DW_TAG_interface_type: | |
22342 | case DW_TAG_structure_type: | |
22343 | case DW_TAG_union_type: | |
22344 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
22345 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
22346 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
22347 | and GCC 4.4. We work around this problem by ignoring these. */ | |
53832f31 | 22348 | if (attr && DW_STRING (attr) |
61012eef GB |
22349 | && (startswith (DW_STRING (attr), "._") |
22350 | || startswith (DW_STRING (attr), "<anonymous"))) | |
907af001 | 22351 | return NULL; |
53832f31 TT |
22352 | |
22353 | /* GCC might emit a nameless typedef that has a linkage name. See | |
22354 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
22355 | if (!attr || DW_STRING (attr) == NULL) | |
22356 | { | |
df5c6c50 | 22357 | char *demangled = NULL; |
53832f31 | 22358 | |
73b9be8b | 22359 | attr = dw2_linkage_name_attr (die, cu); |
53832f31 TT |
22360 | if (attr == NULL || DW_STRING (attr) == NULL) |
22361 | return NULL; | |
22362 | ||
df5c6c50 JK |
22363 | /* Avoid demangling DW_STRING (attr) the second time on a second |
22364 | call for the same DIE. */ | |
22365 | if (!DW_STRING_IS_CANONICAL (attr)) | |
8de20a37 | 22366 | demangled = gdb_demangle (DW_STRING (attr), DMGL_TYPES); |
53832f31 TT |
22367 | |
22368 | if (demangled) | |
22369 | { | |
e6a959d6 | 22370 | const char *base; |
96408a79 | 22371 | |
53832f31 | 22372 | /* FIXME: we already did this for the partial symbol... */ |
34a68019 | 22373 | DW_STRING (attr) |
224c3ddb | 22374 | = ((const char *) |
e3b94546 | 22375 | obstack_copy0 (&objfile->per_bfd->storage_obstack, |
224c3ddb | 22376 | demangled, strlen (demangled))); |
53832f31 TT |
22377 | DW_STRING_IS_CANONICAL (attr) = 1; |
22378 | xfree (demangled); | |
96408a79 SA |
22379 | |
22380 | /* Strip any leading namespaces/classes, keep only the base name. | |
22381 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
22382 | base = strrchr (DW_STRING (attr), ':'); | |
22383 | if (base && base > DW_STRING (attr) && base[-1] == ':') | |
22384 | return &base[1]; | |
22385 | else | |
22386 | return DW_STRING (attr); | |
53832f31 TT |
22387 | } |
22388 | } | |
907af001 UW |
22389 | break; |
22390 | ||
71c25dea | 22391 | default: |
907af001 UW |
22392 | break; |
22393 | } | |
22394 | ||
22395 | if (!DW_STRING_IS_CANONICAL (attr)) | |
22396 | { | |
22397 | DW_STRING (attr) | |
22398 | = dwarf2_canonicalize_name (DW_STRING (attr), cu, | |
e3b94546 | 22399 | &objfile->per_bfd->storage_obstack); |
907af001 | 22400 | DW_STRING_IS_CANONICAL (attr) = 1; |
71c25dea | 22401 | } |
907af001 | 22402 | return DW_STRING (attr); |
9219021c DC |
22403 | } |
22404 | ||
22405 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
22406 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
22407 | containing the return value on output. */ | |
9219021c DC |
22408 | |
22409 | static struct die_info * | |
f2f0e013 | 22410 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
22411 | { |
22412 | struct attribute *attr; | |
9219021c | 22413 | |
f2f0e013 | 22414 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
22415 | if (attr == NULL) |
22416 | return NULL; | |
22417 | ||
f2f0e013 | 22418 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
22419 | } |
22420 | ||
c906108c SS |
22421 | /* Convert a DIE tag into its string name. */ |
22422 | ||
f39c6ffd | 22423 | static const char * |
aa1ee363 | 22424 | dwarf_tag_name (unsigned tag) |
c906108c | 22425 | { |
f39c6ffd TT |
22426 | const char *name = get_DW_TAG_name (tag); |
22427 | ||
22428 | if (name == NULL) | |
22429 | return "DW_TAG_<unknown>"; | |
22430 | ||
22431 | return name; | |
c906108c SS |
22432 | } |
22433 | ||
22434 | /* Convert a DWARF attribute code into its string name. */ | |
22435 | ||
f39c6ffd | 22436 | static const char * |
aa1ee363 | 22437 | dwarf_attr_name (unsigned attr) |
c906108c | 22438 | { |
f39c6ffd TT |
22439 | const char *name; |
22440 | ||
c764a876 | 22441 | #ifdef MIPS /* collides with DW_AT_HP_block_index */ |
f39c6ffd TT |
22442 | if (attr == DW_AT_MIPS_fde) |
22443 | return "DW_AT_MIPS_fde"; | |
22444 | #else | |
22445 | if (attr == DW_AT_HP_block_index) | |
22446 | return "DW_AT_HP_block_index"; | |
c764a876 | 22447 | #endif |
f39c6ffd TT |
22448 | |
22449 | name = get_DW_AT_name (attr); | |
22450 | ||
22451 | if (name == NULL) | |
22452 | return "DW_AT_<unknown>"; | |
22453 | ||
22454 | return name; | |
c906108c SS |
22455 | } |
22456 | ||
22457 | /* Convert a DWARF value form code into its string name. */ | |
22458 | ||
f39c6ffd | 22459 | static const char * |
aa1ee363 | 22460 | dwarf_form_name (unsigned form) |
c906108c | 22461 | { |
f39c6ffd TT |
22462 | const char *name = get_DW_FORM_name (form); |
22463 | ||
22464 | if (name == NULL) | |
22465 | return "DW_FORM_<unknown>"; | |
22466 | ||
22467 | return name; | |
c906108c SS |
22468 | } |
22469 | ||
a121b7c1 | 22470 | static const char * |
fba45db2 | 22471 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
22472 | { |
22473 | if (mybool) | |
22474 | return "TRUE"; | |
22475 | else | |
22476 | return "FALSE"; | |
22477 | } | |
22478 | ||
22479 | /* Convert a DWARF type code into its string name. */ | |
22480 | ||
f39c6ffd | 22481 | static const char * |
aa1ee363 | 22482 | dwarf_type_encoding_name (unsigned enc) |
c906108c | 22483 | { |
f39c6ffd | 22484 | const char *name = get_DW_ATE_name (enc); |
c906108c | 22485 | |
f39c6ffd TT |
22486 | if (name == NULL) |
22487 | return "DW_ATE_<unknown>"; | |
c906108c | 22488 | |
f39c6ffd | 22489 | return name; |
c906108c | 22490 | } |
c906108c | 22491 | |
f9aca02d | 22492 | static void |
d97bc12b | 22493 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
22494 | { |
22495 | unsigned int i; | |
22496 | ||
d97bc12b | 22497 | print_spaces (indent, f); |
9d8780f0 | 22498 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset %s)\n", |
9c541725 | 22499 | dwarf_tag_name (die->tag), die->abbrev, |
9d8780f0 | 22500 | sect_offset_str (die->sect_off)); |
d97bc12b DE |
22501 | |
22502 | if (die->parent != NULL) | |
22503 | { | |
22504 | print_spaces (indent, f); | |
9d8780f0 SM |
22505 | fprintf_unfiltered (f, " parent at offset: %s\n", |
22506 | sect_offset_str (die->parent->sect_off)); | |
d97bc12b DE |
22507 | } |
22508 | ||
22509 | print_spaces (indent, f); | |
22510 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 22511 | dwarf_bool_name (die->child != NULL)); |
c906108c | 22512 | |
d97bc12b DE |
22513 | print_spaces (indent, f); |
22514 | fprintf_unfiltered (f, " attributes:\n"); | |
22515 | ||
c906108c SS |
22516 | for (i = 0; i < die->num_attrs; ++i) |
22517 | { | |
d97bc12b DE |
22518 | print_spaces (indent, f); |
22519 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
22520 | dwarf_attr_name (die->attrs[i].name), |
22521 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 22522 | |
c906108c SS |
22523 | switch (die->attrs[i].form) |
22524 | { | |
c906108c | 22525 | case DW_FORM_addr: |
3019eac3 | 22526 | case DW_FORM_GNU_addr_index: |
d97bc12b | 22527 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 22528 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
22529 | break; |
22530 | case DW_FORM_block2: | |
22531 | case DW_FORM_block4: | |
22532 | case DW_FORM_block: | |
22533 | case DW_FORM_block1: | |
56eb65bd SP |
22534 | fprintf_unfiltered (f, "block: size %s", |
22535 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
c906108c | 22536 | break; |
2dc7f7b3 | 22537 | case DW_FORM_exprloc: |
56eb65bd SP |
22538 | fprintf_unfiltered (f, "expression: size %s", |
22539 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
2dc7f7b3 | 22540 | break; |
0224619f JK |
22541 | case DW_FORM_data16: |
22542 | fprintf_unfiltered (f, "constant of 16 bytes"); | |
22543 | break; | |
4568ecf9 DE |
22544 | case DW_FORM_ref_addr: |
22545 | fprintf_unfiltered (f, "ref address: "); | |
22546 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
22547 | break; | |
36586728 TT |
22548 | case DW_FORM_GNU_ref_alt: |
22549 | fprintf_unfiltered (f, "alt ref address: "); | |
22550 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
22551 | break; | |
10b3939b DJ |
22552 | case DW_FORM_ref1: |
22553 | case DW_FORM_ref2: | |
22554 | case DW_FORM_ref4: | |
4568ecf9 DE |
22555 | case DW_FORM_ref8: |
22556 | case DW_FORM_ref_udata: | |
d97bc12b | 22557 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
4568ecf9 | 22558 | (long) (DW_UNSND (&die->attrs[i]))); |
10b3939b | 22559 | break; |
c906108c SS |
22560 | case DW_FORM_data1: |
22561 | case DW_FORM_data2: | |
22562 | case DW_FORM_data4: | |
ce5d95e1 | 22563 | case DW_FORM_data8: |
c906108c SS |
22564 | case DW_FORM_udata: |
22565 | case DW_FORM_sdata: | |
43bbcdc2 PH |
22566 | fprintf_unfiltered (f, "constant: %s", |
22567 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 22568 | break; |
2dc7f7b3 TT |
22569 | case DW_FORM_sec_offset: |
22570 | fprintf_unfiltered (f, "section offset: %s", | |
22571 | pulongest (DW_UNSND (&die->attrs[i]))); | |
22572 | break; | |
55f1336d | 22573 | case DW_FORM_ref_sig8: |
ac9ec31b DE |
22574 | fprintf_unfiltered (f, "signature: %s", |
22575 | hex_string (DW_SIGNATURE (&die->attrs[i]))); | |
348e048f | 22576 | break; |
c906108c | 22577 | case DW_FORM_string: |
4bdf3d34 | 22578 | case DW_FORM_strp: |
43988095 | 22579 | case DW_FORM_line_strp: |
3019eac3 | 22580 | case DW_FORM_GNU_str_index: |
36586728 | 22581 | case DW_FORM_GNU_strp_alt: |
8285870a | 22582 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 22583 | DW_STRING (&die->attrs[i]) |
8285870a JK |
22584 | ? DW_STRING (&die->attrs[i]) : "", |
22585 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
22586 | break; |
22587 | case DW_FORM_flag: | |
22588 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 22589 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 22590 | else |
d97bc12b | 22591 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 22592 | break; |
2dc7f7b3 TT |
22593 | case DW_FORM_flag_present: |
22594 | fprintf_unfiltered (f, "flag: TRUE"); | |
22595 | break; | |
a8329558 | 22596 | case DW_FORM_indirect: |
0963b4bd MS |
22597 | /* The reader will have reduced the indirect form to |
22598 | the "base form" so this form should not occur. */ | |
3e43a32a MS |
22599 | fprintf_unfiltered (f, |
22600 | "unexpected attribute form: DW_FORM_indirect"); | |
a8329558 | 22601 | break; |
663c44ac JK |
22602 | case DW_FORM_implicit_const: |
22603 | fprintf_unfiltered (f, "constant: %s", | |
22604 | plongest (DW_SND (&die->attrs[i]))); | |
22605 | break; | |
c906108c | 22606 | default: |
d97bc12b | 22607 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 22608 | die->attrs[i].form); |
d97bc12b | 22609 | break; |
c906108c | 22610 | } |
d97bc12b | 22611 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
22612 | } |
22613 | } | |
22614 | ||
f9aca02d | 22615 | static void |
d97bc12b | 22616 | dump_die_for_error (struct die_info *die) |
c906108c | 22617 | { |
d97bc12b DE |
22618 | dump_die_shallow (gdb_stderr, 0, die); |
22619 | } | |
22620 | ||
22621 | static void | |
22622 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
22623 | { | |
22624 | int indent = level * 4; | |
22625 | ||
22626 | gdb_assert (die != NULL); | |
22627 | ||
22628 | if (level >= max_level) | |
22629 | return; | |
22630 | ||
22631 | dump_die_shallow (f, indent, die); | |
22632 | ||
22633 | if (die->child != NULL) | |
c906108c | 22634 | { |
d97bc12b DE |
22635 | print_spaces (indent, f); |
22636 | fprintf_unfiltered (f, " Children:"); | |
22637 | if (level + 1 < max_level) | |
22638 | { | |
22639 | fprintf_unfiltered (f, "\n"); | |
22640 | dump_die_1 (f, level + 1, max_level, die->child); | |
22641 | } | |
22642 | else | |
22643 | { | |
3e43a32a MS |
22644 | fprintf_unfiltered (f, |
22645 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
22646 | } |
22647 | } | |
22648 | ||
22649 | if (die->sibling != NULL && level > 0) | |
22650 | { | |
22651 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
22652 | } |
22653 | } | |
22654 | ||
d97bc12b DE |
22655 | /* This is called from the pdie macro in gdbinit.in. |
22656 | It's not static so gcc will keep a copy callable from gdb. */ | |
22657 | ||
22658 | void | |
22659 | dump_die (struct die_info *die, int max_level) | |
22660 | { | |
22661 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
22662 | } | |
22663 | ||
f9aca02d | 22664 | static void |
51545339 | 22665 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22666 | { |
51545339 | 22667 | void **slot; |
c906108c | 22668 | |
9c541725 PA |
22669 | slot = htab_find_slot_with_hash (cu->die_hash, die, |
22670 | to_underlying (die->sect_off), | |
b64f50a1 | 22671 | INSERT); |
51545339 DJ |
22672 | |
22673 | *slot = die; | |
c906108c SS |
22674 | } |
22675 | ||
b64f50a1 JK |
22676 | /* Return DIE offset of ATTR. Return 0 with complaint if ATTR is not of the |
22677 | required kind. */ | |
22678 | ||
22679 | static sect_offset | |
ff39bb5e | 22680 | dwarf2_get_ref_die_offset (const struct attribute *attr) |
93311388 | 22681 | { |
7771576e | 22682 | if (attr_form_is_ref (attr)) |
9c541725 | 22683 | return (sect_offset) DW_UNSND (attr); |
93311388 | 22684 | |
b98664d3 | 22685 | complaint (_("unsupported die ref attribute form: '%s'"), |
93311388 | 22686 | dwarf_form_name (attr->form)); |
9c541725 | 22687 | return {}; |
c906108c SS |
22688 | } |
22689 | ||
43bbcdc2 PH |
22690 | /* Return the constant value held by ATTR. Return DEFAULT_VALUE if |
22691 | * the value held by the attribute is not constant. */ | |
a02abb62 | 22692 | |
43bbcdc2 | 22693 | static LONGEST |
ff39bb5e | 22694 | dwarf2_get_attr_constant_value (const struct attribute *attr, int default_value) |
a02abb62 | 22695 | { |
663c44ac | 22696 | if (attr->form == DW_FORM_sdata || attr->form == DW_FORM_implicit_const) |
a02abb62 JB |
22697 | return DW_SND (attr); |
22698 | else if (attr->form == DW_FORM_udata | |
22699 | || attr->form == DW_FORM_data1 | |
22700 | || attr->form == DW_FORM_data2 | |
22701 | || attr->form == DW_FORM_data4 | |
22702 | || attr->form == DW_FORM_data8) | |
22703 | return DW_UNSND (attr); | |
22704 | else | |
22705 | { | |
0224619f | 22706 | /* For DW_FORM_data16 see attr_form_is_constant. */ |
b98664d3 | 22707 | complaint (_("Attribute value is not a constant (%s)"), |
a02abb62 JB |
22708 | dwarf_form_name (attr->form)); |
22709 | return default_value; | |
22710 | } | |
22711 | } | |
22712 | ||
348e048f DE |
22713 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
22714 | On entry *REF_CU is the CU of SRC_DIE. | |
22715 | On exit *REF_CU is the CU of the result. */ | |
22716 | ||
22717 | static struct die_info * | |
ff39bb5e | 22718 | follow_die_ref_or_sig (struct die_info *src_die, const struct attribute *attr, |
348e048f DE |
22719 | struct dwarf2_cu **ref_cu) |
22720 | { | |
22721 | struct die_info *die; | |
22722 | ||
7771576e | 22723 | if (attr_form_is_ref (attr)) |
348e048f | 22724 | die = follow_die_ref (src_die, attr, ref_cu); |
55f1336d | 22725 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
22726 | die = follow_die_sig (src_die, attr, ref_cu); |
22727 | else | |
22728 | { | |
22729 | dump_die_for_error (src_die); | |
22730 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
518817b3 | 22731 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
348e048f DE |
22732 | } |
22733 | ||
22734 | return die; | |
03dd20cc DJ |
22735 | } |
22736 | ||
5c631832 | 22737 | /* Follow reference OFFSET. |
673bfd45 DE |
22738 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
22739 | On exit *REF_CU is the CU of the result. | |
22740 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 22741 | |
f9aca02d | 22742 | static struct die_info * |
9c541725 | 22743 | follow_die_offset (sect_offset sect_off, int offset_in_dwz, |
36586728 | 22744 | struct dwarf2_cu **ref_cu) |
c906108c | 22745 | { |
10b3939b | 22746 | struct die_info temp_die; |
f2f0e013 | 22747 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
518817b3 SM |
22748 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22749 | = cu->per_cu->dwarf2_per_objfile; | |
10b3939b | 22750 | |
348e048f DE |
22751 | gdb_assert (cu->per_cu != NULL); |
22752 | ||
98bfdba5 PA |
22753 | target_cu = cu; |
22754 | ||
3019eac3 | 22755 | if (cu->per_cu->is_debug_types) |
348e048f DE |
22756 | { |
22757 | /* .debug_types CUs cannot reference anything outside their CU. | |
22758 | If they need to, they have to reference a signatured type via | |
55f1336d | 22759 | DW_FORM_ref_sig8. */ |
9c541725 | 22760 | if (!offset_in_cu_p (&cu->header, sect_off)) |
5c631832 | 22761 | return NULL; |
348e048f | 22762 | } |
36586728 | 22763 | else if (offset_in_dwz != cu->per_cu->is_dwz |
9c541725 | 22764 | || !offset_in_cu_p (&cu->header, sect_off)) |
10b3939b DJ |
22765 | { |
22766 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 22767 | |
9c541725 | 22768 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
ed2dc618 | 22769 | dwarf2_per_objfile); |
03dd20cc DJ |
22770 | |
22771 | /* If necessary, add it to the queue and load its DIEs. */ | |
95554aad | 22772 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
58f0c718 | 22773 | load_full_comp_unit (per_cu, false, cu->language); |
03dd20cc | 22774 | |
10b3939b DJ |
22775 | target_cu = per_cu->cu; |
22776 | } | |
98bfdba5 PA |
22777 | else if (cu->dies == NULL) |
22778 | { | |
22779 | /* We're loading full DIEs during partial symbol reading. */ | |
22780 | gdb_assert (dwarf2_per_objfile->reading_partial_symbols); | |
58f0c718 | 22781 | load_full_comp_unit (cu->per_cu, false, language_minimal); |
98bfdba5 | 22782 | } |
c906108c | 22783 | |
f2f0e013 | 22784 | *ref_cu = target_cu; |
9c541725 | 22785 | temp_die.sect_off = sect_off; |
9a3c8263 | 22786 | return (struct die_info *) htab_find_with_hash (target_cu->die_hash, |
9c541725 PA |
22787 | &temp_die, |
22788 | to_underlying (sect_off)); | |
5c631832 | 22789 | } |
10b3939b | 22790 | |
5c631832 JK |
22791 | /* Follow reference attribute ATTR of SRC_DIE. |
22792 | On entry *REF_CU is the CU of SRC_DIE. | |
22793 | On exit *REF_CU is the CU of the result. */ | |
22794 | ||
22795 | static struct die_info * | |
ff39bb5e | 22796 | follow_die_ref (struct die_info *src_die, const struct attribute *attr, |
5c631832 JK |
22797 | struct dwarf2_cu **ref_cu) |
22798 | { | |
9c541725 | 22799 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
5c631832 JK |
22800 | struct dwarf2_cu *cu = *ref_cu; |
22801 | struct die_info *die; | |
22802 | ||
9c541725 | 22803 | die = follow_die_offset (sect_off, |
36586728 TT |
22804 | (attr->form == DW_FORM_GNU_ref_alt |
22805 | || cu->per_cu->is_dwz), | |
22806 | ref_cu); | |
5c631832 | 22807 | if (!die) |
9d8780f0 SM |
22808 | error (_("Dwarf Error: Cannot find DIE at %s referenced from DIE " |
22809 | "at %s [in module %s]"), | |
22810 | sect_offset_str (sect_off), sect_offset_str (src_die->sect_off), | |
518817b3 | 22811 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
348e048f | 22812 | |
5c631832 JK |
22813 | return die; |
22814 | } | |
22815 | ||
9c541725 | 22816 | /* Return DWARF block referenced by DW_AT_location of DIE at SECT_OFF at PER_CU. |
d83e736b | 22817 | Returned value is intended for DW_OP_call*. Returned |
e3b94546 SM |
22818 | dwarf2_locexpr_baton->data has lifetime of |
22819 | PER_CU->DWARF2_PER_OBJFILE->OBJFILE. */ | |
5c631832 JK |
22820 | |
22821 | struct dwarf2_locexpr_baton | |
9c541725 | 22822 | dwarf2_fetch_die_loc_sect_off (sect_offset sect_off, |
8b9737bf TT |
22823 | struct dwarf2_per_cu_data *per_cu, |
22824 | CORE_ADDR (*get_frame_pc) (void *baton), | |
22825 | void *baton) | |
5c631832 | 22826 | { |
918dd910 | 22827 | struct dwarf2_cu *cu; |
5c631832 JK |
22828 | struct die_info *die; |
22829 | struct attribute *attr; | |
22830 | struct dwarf2_locexpr_baton retval; | |
12359b5e SM |
22831 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
22832 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8cf6f0b1 | 22833 | |
918dd910 | 22834 | if (per_cu->cu == NULL) |
58f0c718 | 22835 | load_cu (per_cu, false); |
918dd910 | 22836 | cu = per_cu->cu; |
cc12ce38 DE |
22837 | if (cu == NULL) |
22838 | { | |
22839 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
22840 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
22841 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
22842 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 22843 | } |
918dd910 | 22844 | |
9c541725 | 22845 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
5c631832 | 22846 | if (!die) |
9d8780f0 SM |
22847 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
22848 | sect_offset_str (sect_off), objfile_name (objfile)); | |
5c631832 JK |
22849 | |
22850 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
22851 | if (!attr) | |
22852 | { | |
e103e986 JK |
22853 | /* DWARF: "If there is no such attribute, then there is no effect.". |
22854 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 22855 | |
e103e986 | 22856 | retval.data = NULL; |
5c631832 JK |
22857 | retval.size = 0; |
22858 | } | |
8cf6f0b1 TT |
22859 | else if (attr_form_is_section_offset (attr)) |
22860 | { | |
22861 | struct dwarf2_loclist_baton loclist_baton; | |
22862 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
22863 | size_t size; | |
22864 | ||
22865 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
22866 | ||
22867 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
22868 | &size, pc); | |
22869 | retval.size = size; | |
22870 | } | |
5c631832 JK |
22871 | else |
22872 | { | |
22873 | if (!attr_form_is_block (attr)) | |
9d8780f0 | 22874 | error (_("Dwarf Error: DIE at %s referenced in module %s " |
5c631832 | 22875 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), |
9d8780f0 | 22876 | sect_offset_str (sect_off), objfile_name (objfile)); |
5c631832 JK |
22877 | |
22878 | retval.data = DW_BLOCK (attr)->data; | |
22879 | retval.size = DW_BLOCK (attr)->size; | |
22880 | } | |
22881 | retval.per_cu = cu->per_cu; | |
918dd910 | 22882 | |
ed2dc618 | 22883 | age_cached_comp_units (dwarf2_per_objfile); |
918dd910 | 22884 | |
5c631832 | 22885 | return retval; |
348e048f DE |
22886 | } |
22887 | ||
8b9737bf TT |
22888 | /* Like dwarf2_fetch_die_loc_sect_off, but take a CU |
22889 | offset. */ | |
22890 | ||
22891 | struct dwarf2_locexpr_baton | |
22892 | dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu, | |
22893 | struct dwarf2_per_cu_data *per_cu, | |
22894 | CORE_ADDR (*get_frame_pc) (void *baton), | |
22895 | void *baton) | |
22896 | { | |
9c541725 | 22897 | sect_offset sect_off = per_cu->sect_off + to_underlying (offset_in_cu); |
8b9737bf | 22898 | |
9c541725 | 22899 | return dwarf2_fetch_die_loc_sect_off (sect_off, per_cu, get_frame_pc, baton); |
8b9737bf TT |
22900 | } |
22901 | ||
b6807d98 TT |
22902 | /* Write a constant of a given type as target-ordered bytes into |
22903 | OBSTACK. */ | |
22904 | ||
22905 | static const gdb_byte * | |
22906 | write_constant_as_bytes (struct obstack *obstack, | |
22907 | enum bfd_endian byte_order, | |
22908 | struct type *type, | |
22909 | ULONGEST value, | |
22910 | LONGEST *len) | |
22911 | { | |
22912 | gdb_byte *result; | |
22913 | ||
22914 | *len = TYPE_LENGTH (type); | |
224c3ddb | 22915 | result = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
22916 | store_unsigned_integer (result, *len, byte_order, value); |
22917 | ||
22918 | return result; | |
22919 | } | |
22920 | ||
22921 | /* If the DIE at OFFSET in PER_CU has a DW_AT_const_value, return a | |
22922 | pointer to the constant bytes and set LEN to the length of the | |
22923 | data. If memory is needed, allocate it on OBSTACK. If the DIE | |
22924 | does not have a DW_AT_const_value, return NULL. */ | |
22925 | ||
22926 | const gdb_byte * | |
9c541725 | 22927 | dwarf2_fetch_constant_bytes (sect_offset sect_off, |
b6807d98 TT |
22928 | struct dwarf2_per_cu_data *per_cu, |
22929 | struct obstack *obstack, | |
22930 | LONGEST *len) | |
22931 | { | |
22932 | struct dwarf2_cu *cu; | |
22933 | struct die_info *die; | |
22934 | struct attribute *attr; | |
22935 | const gdb_byte *result = NULL; | |
22936 | struct type *type; | |
22937 | LONGEST value; | |
22938 | enum bfd_endian byte_order; | |
e3b94546 | 22939 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
b6807d98 | 22940 | |
b6807d98 | 22941 | if (per_cu->cu == NULL) |
58f0c718 | 22942 | load_cu (per_cu, false); |
b6807d98 | 22943 | cu = per_cu->cu; |
cc12ce38 DE |
22944 | if (cu == NULL) |
22945 | { | |
22946 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
22947 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
22948 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
22949 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 22950 | } |
b6807d98 | 22951 | |
9c541725 | 22952 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
b6807d98 | 22953 | if (!die) |
9d8780f0 SM |
22954 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
22955 | sect_offset_str (sect_off), objfile_name (objfile)); | |
b6807d98 TT |
22956 | |
22957 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
22958 | if (attr == NULL) | |
22959 | return NULL; | |
22960 | ||
e3b94546 | 22961 | byte_order = (bfd_big_endian (objfile->obfd) |
b6807d98 TT |
22962 | ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); |
22963 | ||
22964 | switch (attr->form) | |
22965 | { | |
22966 | case DW_FORM_addr: | |
22967 | case DW_FORM_GNU_addr_index: | |
22968 | { | |
22969 | gdb_byte *tem; | |
22970 | ||
22971 | *len = cu->header.addr_size; | |
224c3ddb | 22972 | tem = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
22973 | store_unsigned_integer (tem, *len, byte_order, DW_ADDR (attr)); |
22974 | result = tem; | |
22975 | } | |
22976 | break; | |
22977 | case DW_FORM_string: | |
22978 | case DW_FORM_strp: | |
22979 | case DW_FORM_GNU_str_index: | |
22980 | case DW_FORM_GNU_strp_alt: | |
22981 | /* DW_STRING is already allocated on the objfile obstack, point | |
22982 | directly to it. */ | |
22983 | result = (const gdb_byte *) DW_STRING (attr); | |
22984 | *len = strlen (DW_STRING (attr)); | |
22985 | break; | |
22986 | case DW_FORM_block1: | |
22987 | case DW_FORM_block2: | |
22988 | case DW_FORM_block4: | |
22989 | case DW_FORM_block: | |
22990 | case DW_FORM_exprloc: | |
0224619f | 22991 | case DW_FORM_data16: |
b6807d98 TT |
22992 | result = DW_BLOCK (attr)->data; |
22993 | *len = DW_BLOCK (attr)->size; | |
22994 | break; | |
22995 | ||
22996 | /* The DW_AT_const_value attributes are supposed to carry the | |
22997 | symbol's value "represented as it would be on the target | |
22998 | architecture." By the time we get here, it's already been | |
22999 | converted to host endianness, so we just need to sign- or | |
23000 | zero-extend it as appropriate. */ | |
23001 | case DW_FORM_data1: | |
23002 | type = die_type (die, cu); | |
23003 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 8); | |
23004 | if (result == NULL) | |
23005 | result = write_constant_as_bytes (obstack, byte_order, | |
23006 | type, value, len); | |
23007 | break; | |
23008 | case DW_FORM_data2: | |
23009 | type = die_type (die, cu); | |
23010 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 16); | |
23011 | if (result == NULL) | |
23012 | result = write_constant_as_bytes (obstack, byte_order, | |
23013 | type, value, len); | |
23014 | break; | |
23015 | case DW_FORM_data4: | |
23016 | type = die_type (die, cu); | |
23017 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 32); | |
23018 | if (result == NULL) | |
23019 | result = write_constant_as_bytes (obstack, byte_order, | |
23020 | type, value, len); | |
23021 | break; | |
23022 | case DW_FORM_data8: | |
23023 | type = die_type (die, cu); | |
23024 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 64); | |
23025 | if (result == NULL) | |
23026 | result = write_constant_as_bytes (obstack, byte_order, | |
23027 | type, value, len); | |
23028 | break; | |
23029 | ||
23030 | case DW_FORM_sdata: | |
663c44ac | 23031 | case DW_FORM_implicit_const: |
b6807d98 TT |
23032 | type = die_type (die, cu); |
23033 | result = write_constant_as_bytes (obstack, byte_order, | |
23034 | type, DW_SND (attr), len); | |
23035 | break; | |
23036 | ||
23037 | case DW_FORM_udata: | |
23038 | type = die_type (die, cu); | |
23039 | result = write_constant_as_bytes (obstack, byte_order, | |
23040 | type, DW_UNSND (attr), len); | |
23041 | break; | |
23042 | ||
23043 | default: | |
b98664d3 | 23044 | complaint (_("unsupported const value attribute form: '%s'"), |
b6807d98 TT |
23045 | dwarf_form_name (attr->form)); |
23046 | break; | |
23047 | } | |
23048 | ||
23049 | return result; | |
23050 | } | |
23051 | ||
7942e96e AA |
23052 | /* Return the type of the die at OFFSET in PER_CU. Return NULL if no |
23053 | valid type for this die is found. */ | |
23054 | ||
23055 | struct type * | |
9c541725 | 23056 | dwarf2_fetch_die_type_sect_off (sect_offset sect_off, |
7942e96e AA |
23057 | struct dwarf2_per_cu_data *per_cu) |
23058 | { | |
23059 | struct dwarf2_cu *cu; | |
23060 | struct die_info *die; | |
23061 | ||
7942e96e | 23062 | if (per_cu->cu == NULL) |
58f0c718 | 23063 | load_cu (per_cu, false); |
7942e96e AA |
23064 | cu = per_cu->cu; |
23065 | if (!cu) | |
23066 | return NULL; | |
23067 | ||
9c541725 | 23068 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
7942e96e AA |
23069 | if (!die) |
23070 | return NULL; | |
23071 | ||
23072 | return die_type (die, cu); | |
23073 | } | |
23074 | ||
8a9b8146 TT |
23075 | /* Return the type of the DIE at DIE_OFFSET in the CU named by |
23076 | PER_CU. */ | |
23077 | ||
23078 | struct type * | |
b64f50a1 | 23079 | dwarf2_get_die_type (cu_offset die_offset, |
8a9b8146 TT |
23080 | struct dwarf2_per_cu_data *per_cu) |
23081 | { | |
9c541725 | 23082 | sect_offset die_offset_sect = per_cu->sect_off + to_underlying (die_offset); |
b64f50a1 | 23083 | return get_die_type_at_offset (die_offset_sect, per_cu); |
8a9b8146 TT |
23084 | } |
23085 | ||
ac9ec31b | 23086 | /* Follow type unit SIG_TYPE referenced by SRC_DIE. |
348e048f | 23087 | On entry *REF_CU is the CU of SRC_DIE. |
ac9ec31b DE |
23088 | On exit *REF_CU is the CU of the result. |
23089 | Returns NULL if the referenced DIE isn't found. */ | |
348e048f DE |
23090 | |
23091 | static struct die_info * | |
ac9ec31b DE |
23092 | follow_die_sig_1 (struct die_info *src_die, struct signatured_type *sig_type, |
23093 | struct dwarf2_cu **ref_cu) | |
348e048f | 23094 | { |
348e048f | 23095 | struct die_info temp_die; |
348e048f DE |
23096 | struct dwarf2_cu *sig_cu; |
23097 | struct die_info *die; | |
23098 | ||
ac9ec31b DE |
23099 | /* While it might be nice to assert sig_type->type == NULL here, |
23100 | we can get here for DW_AT_imported_declaration where we need | |
23101 | the DIE not the type. */ | |
348e048f DE |
23102 | |
23103 | /* If necessary, add it to the queue and load its DIEs. */ | |
23104 | ||
95554aad | 23105 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, language_minimal)) |
a0f42c21 | 23106 | read_signatured_type (sig_type); |
348e048f | 23107 | |
348e048f | 23108 | sig_cu = sig_type->per_cu.cu; |
69d751e3 | 23109 | gdb_assert (sig_cu != NULL); |
9c541725 PA |
23110 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
23111 | temp_die.sect_off = sig_type->type_offset_in_section; | |
9a3c8263 | 23112 | die = (struct die_info *) htab_find_with_hash (sig_cu->die_hash, &temp_die, |
9c541725 | 23113 | to_underlying (temp_die.sect_off)); |
348e048f DE |
23114 | if (die) |
23115 | { | |
ed2dc618 | 23116 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 23117 | = (*ref_cu)->per_cu->dwarf2_per_objfile; |
ed2dc618 | 23118 | |
796a7ff8 DE |
23119 | /* For .gdb_index version 7 keep track of included TUs. |
23120 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
23121 | if (dwarf2_per_objfile->index_table != NULL | |
23122 | && dwarf2_per_objfile->index_table->version <= 7) | |
23123 | { | |
23124 | VEC_safe_push (dwarf2_per_cu_ptr, | |
23125 | (*ref_cu)->per_cu->imported_symtabs, | |
23126 | sig_cu->per_cu); | |
23127 | } | |
23128 | ||
348e048f DE |
23129 | *ref_cu = sig_cu; |
23130 | return die; | |
23131 | } | |
23132 | ||
ac9ec31b DE |
23133 | return NULL; |
23134 | } | |
23135 | ||
23136 | /* Follow signatured type referenced by ATTR in SRC_DIE. | |
23137 | On entry *REF_CU is the CU of SRC_DIE. | |
23138 | On exit *REF_CU is the CU of the result. | |
23139 | The result is the DIE of the type. | |
23140 | If the referenced type cannot be found an error is thrown. */ | |
23141 | ||
23142 | static struct die_info * | |
ff39bb5e | 23143 | follow_die_sig (struct die_info *src_die, const struct attribute *attr, |
ac9ec31b DE |
23144 | struct dwarf2_cu **ref_cu) |
23145 | { | |
23146 | ULONGEST signature = DW_SIGNATURE (attr); | |
23147 | struct signatured_type *sig_type; | |
23148 | struct die_info *die; | |
23149 | ||
23150 | gdb_assert (attr->form == DW_FORM_ref_sig8); | |
23151 | ||
a2ce51a0 | 23152 | sig_type = lookup_signatured_type (*ref_cu, signature); |
ac9ec31b DE |
23153 | /* sig_type will be NULL if the signatured type is missing from |
23154 | the debug info. */ | |
23155 | if (sig_type == NULL) | |
23156 | { | |
23157 | error (_("Dwarf Error: Cannot find signatured DIE %s referenced" | |
9d8780f0 SM |
23158 | " from DIE at %s [in module %s]"), |
23159 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
518817b3 | 23160 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23161 | } |
23162 | ||
23163 | die = follow_die_sig_1 (src_die, sig_type, ref_cu); | |
23164 | if (die == NULL) | |
23165 | { | |
23166 | dump_die_for_error (src_die); | |
23167 | error (_("Dwarf Error: Problem reading signatured DIE %s referenced" | |
9d8780f0 SM |
23168 | " from DIE at %s [in module %s]"), |
23169 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
518817b3 | 23170 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23171 | } |
23172 | ||
23173 | return die; | |
23174 | } | |
23175 | ||
23176 | /* Get the type specified by SIGNATURE referenced in DIE/CU, | |
23177 | reading in and processing the type unit if necessary. */ | |
23178 | ||
23179 | static struct type * | |
23180 | get_signatured_type (struct die_info *die, ULONGEST signature, | |
23181 | struct dwarf2_cu *cu) | |
23182 | { | |
518817b3 SM |
23183 | struct dwarf2_per_objfile *dwarf2_per_objfile |
23184 | = cu->per_cu->dwarf2_per_objfile; | |
ac9ec31b DE |
23185 | struct signatured_type *sig_type; |
23186 | struct dwarf2_cu *type_cu; | |
23187 | struct die_info *type_die; | |
23188 | struct type *type; | |
23189 | ||
a2ce51a0 | 23190 | sig_type = lookup_signatured_type (cu, signature); |
ac9ec31b DE |
23191 | /* sig_type will be NULL if the signatured type is missing from |
23192 | the debug info. */ | |
23193 | if (sig_type == NULL) | |
23194 | { | |
b98664d3 | 23195 | complaint (_("Dwarf Error: Cannot find signatured DIE %s referenced" |
9d8780f0 SM |
23196 | " from DIE at %s [in module %s]"), |
23197 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 23198 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23199 | return build_error_marker_type (cu, die); |
23200 | } | |
23201 | ||
23202 | /* If we already know the type we're done. */ | |
23203 | if (sig_type->type != NULL) | |
23204 | return sig_type->type; | |
23205 | ||
23206 | type_cu = cu; | |
23207 | type_die = follow_die_sig_1 (die, sig_type, &type_cu); | |
23208 | if (type_die != NULL) | |
23209 | { | |
23210 | /* N.B. We need to call get_die_type to ensure only one type for this DIE | |
23211 | is created. This is important, for example, because for c++ classes | |
23212 | we need TYPE_NAME set which is only done by new_symbol. Blech. */ | |
23213 | type = read_type_die (type_die, type_cu); | |
23214 | if (type == NULL) | |
23215 | { | |
b98664d3 | 23216 | complaint (_("Dwarf Error: Cannot build signatured type %s" |
9d8780f0 SM |
23217 | " referenced from DIE at %s [in module %s]"), |
23218 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 23219 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23220 | type = build_error_marker_type (cu, die); |
23221 | } | |
23222 | } | |
23223 | else | |
23224 | { | |
b98664d3 | 23225 | complaint (_("Dwarf Error: Problem reading signatured DIE %s referenced" |
9d8780f0 SM |
23226 | " from DIE at %s [in module %s]"), |
23227 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 23228 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23229 | type = build_error_marker_type (cu, die); |
23230 | } | |
23231 | sig_type->type = type; | |
23232 | ||
23233 | return type; | |
23234 | } | |
23235 | ||
23236 | /* Get the type specified by the DW_AT_signature ATTR in DIE/CU, | |
23237 | reading in and processing the type unit if necessary. */ | |
23238 | ||
23239 | static struct type * | |
ff39bb5e | 23240 | get_DW_AT_signature_type (struct die_info *die, const struct attribute *attr, |
b385a60d | 23241 | struct dwarf2_cu *cu) /* ARI: editCase function */ |
ac9ec31b DE |
23242 | { |
23243 | /* Yes, DW_AT_signature can use a non-ref_sig8 reference. */ | |
7771576e | 23244 | if (attr_form_is_ref (attr)) |
ac9ec31b DE |
23245 | { |
23246 | struct dwarf2_cu *type_cu = cu; | |
23247 | struct die_info *type_die = follow_die_ref (die, attr, &type_cu); | |
23248 | ||
23249 | return read_type_die (type_die, type_cu); | |
23250 | } | |
23251 | else if (attr->form == DW_FORM_ref_sig8) | |
23252 | { | |
23253 | return get_signatured_type (die, DW_SIGNATURE (attr), cu); | |
23254 | } | |
23255 | else | |
23256 | { | |
518817b3 SM |
23257 | struct dwarf2_per_objfile *dwarf2_per_objfile |
23258 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 23259 | |
b98664d3 | 23260 | complaint (_("Dwarf Error: DW_AT_signature has bad form %s in DIE" |
9d8780f0 SM |
23261 | " at %s [in module %s]"), |
23262 | dwarf_form_name (attr->form), sect_offset_str (die->sect_off), | |
4262abfb | 23263 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23264 | return build_error_marker_type (cu, die); |
23265 | } | |
348e048f DE |
23266 | } |
23267 | ||
e5fe5e75 | 23268 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
23269 | |
23270 | static void | |
e5fe5e75 | 23271 | load_full_type_unit (struct dwarf2_per_cu_data *per_cu) |
348e048f | 23272 | { |
52dc124a | 23273 | struct signatured_type *sig_type; |
348e048f | 23274 | |
f4dc4d17 DE |
23275 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
23276 | gdb_assert (! IS_TYPE_UNIT_GROUP (per_cu)); | |
23277 | ||
6721b2ec DE |
23278 | /* We have the per_cu, but we need the signatured_type. |
23279 | Fortunately this is an easy translation. */ | |
23280 | gdb_assert (per_cu->is_debug_types); | |
23281 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 23282 | |
6721b2ec | 23283 | gdb_assert (per_cu->cu == NULL); |
348e048f | 23284 | |
52dc124a | 23285 | read_signatured_type (sig_type); |
348e048f | 23286 | |
6721b2ec | 23287 | gdb_assert (per_cu->cu != NULL); |
348e048f DE |
23288 | } |
23289 | ||
dee91e82 DE |
23290 | /* die_reader_func for read_signatured_type. |
23291 | This is identical to load_full_comp_unit_reader, | |
23292 | but is kept separate for now. */ | |
348e048f DE |
23293 | |
23294 | static void | |
dee91e82 | 23295 | read_signatured_type_reader (const struct die_reader_specs *reader, |
d521ce57 | 23296 | const gdb_byte *info_ptr, |
dee91e82 DE |
23297 | struct die_info *comp_unit_die, |
23298 | int has_children, | |
23299 | void *data) | |
348e048f | 23300 | { |
dee91e82 | 23301 | struct dwarf2_cu *cu = reader->cu; |
348e048f | 23302 | |
dee91e82 DE |
23303 | gdb_assert (cu->die_hash == NULL); |
23304 | cu->die_hash = | |
23305 | htab_create_alloc_ex (cu->header.length / 12, | |
23306 | die_hash, | |
23307 | die_eq, | |
23308 | NULL, | |
23309 | &cu->comp_unit_obstack, | |
23310 | hashtab_obstack_allocate, | |
23311 | dummy_obstack_deallocate); | |
348e048f | 23312 | |
dee91e82 DE |
23313 | if (has_children) |
23314 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
23315 | &info_ptr, comp_unit_die); | |
23316 | cu->dies = comp_unit_die; | |
23317 | /* comp_unit_die is not stored in die_hash, no need. */ | |
348e048f DE |
23318 | |
23319 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 23320 | all CUs needed for references have been loaded yet, and symbol |
348e048f | 23321 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
23322 | or we won't be able to build types correctly. |
23323 | Similarly, if we do not read the producer, we can not apply | |
23324 | producer-specific interpretation. */ | |
95554aad | 23325 | prepare_one_comp_unit (cu, cu->dies, language_minimal); |
dee91e82 | 23326 | } |
348e048f | 23327 | |
3019eac3 DE |
23328 | /* Read in a signatured type and build its CU and DIEs. |
23329 | If the type is a stub for the real type in a DWO file, | |
23330 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
23331 | |
23332 | static void | |
23333 | read_signatured_type (struct signatured_type *sig_type) | |
23334 | { | |
23335 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 23336 | |
3019eac3 | 23337 | gdb_assert (per_cu->is_debug_types); |
dee91e82 | 23338 | gdb_assert (per_cu->cu == NULL); |
348e048f | 23339 | |
58f0c718 | 23340 | init_cutu_and_read_dies (per_cu, NULL, 0, 1, false, |
f4dc4d17 | 23341 | read_signatured_type_reader, NULL); |
7ee85ab1 | 23342 | sig_type->per_cu.tu_read = 1; |
c906108c SS |
23343 | } |
23344 | ||
c906108c SS |
23345 | /* Decode simple location descriptions. |
23346 | Given a pointer to a dwarf block that defines a location, compute | |
23347 | the location and return the value. | |
23348 | ||
4cecd739 DJ |
23349 | NOTE drow/2003-11-18: This function is called in two situations |
23350 | now: for the address of static or global variables (partial symbols | |
23351 | only) and for offsets into structures which are expected to be | |
23352 | (more or less) constant. The partial symbol case should go away, | |
23353 | and only the constant case should remain. That will let this | |
23354 | function complain more accurately. A few special modes are allowed | |
23355 | without complaint for global variables (for instance, global | |
23356 | register values and thread-local values). | |
c906108c SS |
23357 | |
23358 | A location description containing no operations indicates that the | |
4cecd739 | 23359 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
23360 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
23361 | callers will only want a very basic result and this can become a | |
21ae7a4d JK |
23362 | complaint. |
23363 | ||
23364 | Note that stack[0] is unused except as a default error return. */ | |
c906108c SS |
23365 | |
23366 | static CORE_ADDR | |
e7c27a73 | 23367 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 23368 | { |
518817b3 | 23369 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
56eb65bd SP |
23370 | size_t i; |
23371 | size_t size = blk->size; | |
d521ce57 | 23372 | const gdb_byte *data = blk->data; |
21ae7a4d JK |
23373 | CORE_ADDR stack[64]; |
23374 | int stacki; | |
23375 | unsigned int bytes_read, unsnd; | |
23376 | gdb_byte op; | |
c906108c | 23377 | |
21ae7a4d JK |
23378 | i = 0; |
23379 | stacki = 0; | |
23380 | stack[stacki] = 0; | |
23381 | stack[++stacki] = 0; | |
23382 | ||
23383 | while (i < size) | |
23384 | { | |
23385 | op = data[i++]; | |
23386 | switch (op) | |
23387 | { | |
23388 | case DW_OP_lit0: | |
23389 | case DW_OP_lit1: | |
23390 | case DW_OP_lit2: | |
23391 | case DW_OP_lit3: | |
23392 | case DW_OP_lit4: | |
23393 | case DW_OP_lit5: | |
23394 | case DW_OP_lit6: | |
23395 | case DW_OP_lit7: | |
23396 | case DW_OP_lit8: | |
23397 | case DW_OP_lit9: | |
23398 | case DW_OP_lit10: | |
23399 | case DW_OP_lit11: | |
23400 | case DW_OP_lit12: | |
23401 | case DW_OP_lit13: | |
23402 | case DW_OP_lit14: | |
23403 | case DW_OP_lit15: | |
23404 | case DW_OP_lit16: | |
23405 | case DW_OP_lit17: | |
23406 | case DW_OP_lit18: | |
23407 | case DW_OP_lit19: | |
23408 | case DW_OP_lit20: | |
23409 | case DW_OP_lit21: | |
23410 | case DW_OP_lit22: | |
23411 | case DW_OP_lit23: | |
23412 | case DW_OP_lit24: | |
23413 | case DW_OP_lit25: | |
23414 | case DW_OP_lit26: | |
23415 | case DW_OP_lit27: | |
23416 | case DW_OP_lit28: | |
23417 | case DW_OP_lit29: | |
23418 | case DW_OP_lit30: | |
23419 | case DW_OP_lit31: | |
23420 | stack[++stacki] = op - DW_OP_lit0; | |
23421 | break; | |
f1bea926 | 23422 | |
21ae7a4d JK |
23423 | case DW_OP_reg0: |
23424 | case DW_OP_reg1: | |
23425 | case DW_OP_reg2: | |
23426 | case DW_OP_reg3: | |
23427 | case DW_OP_reg4: | |
23428 | case DW_OP_reg5: | |
23429 | case DW_OP_reg6: | |
23430 | case DW_OP_reg7: | |
23431 | case DW_OP_reg8: | |
23432 | case DW_OP_reg9: | |
23433 | case DW_OP_reg10: | |
23434 | case DW_OP_reg11: | |
23435 | case DW_OP_reg12: | |
23436 | case DW_OP_reg13: | |
23437 | case DW_OP_reg14: | |
23438 | case DW_OP_reg15: | |
23439 | case DW_OP_reg16: | |
23440 | case DW_OP_reg17: | |
23441 | case DW_OP_reg18: | |
23442 | case DW_OP_reg19: | |
23443 | case DW_OP_reg20: | |
23444 | case DW_OP_reg21: | |
23445 | case DW_OP_reg22: | |
23446 | case DW_OP_reg23: | |
23447 | case DW_OP_reg24: | |
23448 | case DW_OP_reg25: | |
23449 | case DW_OP_reg26: | |
23450 | case DW_OP_reg27: | |
23451 | case DW_OP_reg28: | |
23452 | case DW_OP_reg29: | |
23453 | case DW_OP_reg30: | |
23454 | case DW_OP_reg31: | |
23455 | stack[++stacki] = op - DW_OP_reg0; | |
23456 | if (i < size) | |
23457 | dwarf2_complex_location_expr_complaint (); | |
23458 | break; | |
c906108c | 23459 | |
21ae7a4d JK |
23460 | case DW_OP_regx: |
23461 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
23462 | i += bytes_read; | |
23463 | stack[++stacki] = unsnd; | |
23464 | if (i < size) | |
23465 | dwarf2_complex_location_expr_complaint (); | |
23466 | break; | |
c906108c | 23467 | |
21ae7a4d JK |
23468 | case DW_OP_addr: |
23469 | stack[++stacki] = read_address (objfile->obfd, &data[i], | |
23470 | cu, &bytes_read); | |
23471 | i += bytes_read; | |
23472 | break; | |
d53d4ac5 | 23473 | |
21ae7a4d JK |
23474 | case DW_OP_const1u: |
23475 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
23476 | i += 1; | |
23477 | break; | |
23478 | ||
23479 | case DW_OP_const1s: | |
23480 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
23481 | i += 1; | |
23482 | break; | |
23483 | ||
23484 | case DW_OP_const2u: | |
23485 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
23486 | i += 2; | |
23487 | break; | |
23488 | ||
23489 | case DW_OP_const2s: | |
23490 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
23491 | i += 2; | |
23492 | break; | |
d53d4ac5 | 23493 | |
21ae7a4d JK |
23494 | case DW_OP_const4u: |
23495 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
23496 | i += 4; | |
23497 | break; | |
23498 | ||
23499 | case DW_OP_const4s: | |
23500 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
23501 | i += 4; | |
23502 | break; | |
23503 | ||
585861ea JK |
23504 | case DW_OP_const8u: |
23505 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
23506 | i += 8; | |
23507 | break; | |
23508 | ||
21ae7a4d JK |
23509 | case DW_OP_constu: |
23510 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
23511 | &bytes_read); | |
23512 | i += bytes_read; | |
23513 | break; | |
23514 | ||
23515 | case DW_OP_consts: | |
23516 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
23517 | i += bytes_read; | |
23518 | break; | |
23519 | ||
23520 | case DW_OP_dup: | |
23521 | stack[stacki + 1] = stack[stacki]; | |
23522 | stacki++; | |
23523 | break; | |
23524 | ||
23525 | case DW_OP_plus: | |
23526 | stack[stacki - 1] += stack[stacki]; | |
23527 | stacki--; | |
23528 | break; | |
23529 | ||
23530 | case DW_OP_plus_uconst: | |
23531 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
23532 | &bytes_read); | |
23533 | i += bytes_read; | |
23534 | break; | |
23535 | ||
23536 | case DW_OP_minus: | |
23537 | stack[stacki - 1] -= stack[stacki]; | |
23538 | stacki--; | |
23539 | break; | |
23540 | ||
23541 | case DW_OP_deref: | |
23542 | /* If we're not the last op, then we definitely can't encode | |
23543 | this using GDB's address_class enum. This is valid for partial | |
23544 | global symbols, although the variable's address will be bogus | |
23545 | in the psymtab. */ | |
23546 | if (i < size) | |
23547 | dwarf2_complex_location_expr_complaint (); | |
23548 | break; | |
23549 | ||
23550 | case DW_OP_GNU_push_tls_address: | |
4aa4e28b | 23551 | case DW_OP_form_tls_address: |
21ae7a4d JK |
23552 | /* The top of the stack has the offset from the beginning |
23553 | of the thread control block at which the variable is located. */ | |
23554 | /* Nothing should follow this operator, so the top of stack would | |
23555 | be returned. */ | |
23556 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
23557 | address will be bogus in the psymtab. Make it always at least |
23558 | non-zero to not look as a variable garbage collected by linker | |
23559 | which have DW_OP_addr 0. */ | |
21ae7a4d JK |
23560 | if (i < size) |
23561 | dwarf2_complex_location_expr_complaint (); | |
585861ea | 23562 | stack[stacki]++; |
21ae7a4d JK |
23563 | break; |
23564 | ||
23565 | case DW_OP_GNU_uninit: | |
23566 | break; | |
23567 | ||
3019eac3 | 23568 | case DW_OP_GNU_addr_index: |
49f6c839 | 23569 | case DW_OP_GNU_const_index: |
3019eac3 DE |
23570 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
23571 | &bytes_read); | |
23572 | i += bytes_read; | |
23573 | break; | |
23574 | ||
21ae7a4d JK |
23575 | default: |
23576 | { | |
f39c6ffd | 23577 | const char *name = get_DW_OP_name (op); |
21ae7a4d JK |
23578 | |
23579 | if (name) | |
b98664d3 | 23580 | complaint (_("unsupported stack op: '%s'"), |
21ae7a4d JK |
23581 | name); |
23582 | else | |
b98664d3 | 23583 | complaint (_("unsupported stack op: '%02x'"), |
21ae7a4d JK |
23584 | op); |
23585 | } | |
23586 | ||
23587 | return (stack[stacki]); | |
d53d4ac5 | 23588 | } |
3c6e0cb3 | 23589 | |
21ae7a4d JK |
23590 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
23591 | outside of the allocated space. Also enforce minimum>0. */ | |
23592 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
23593 | { | |
b98664d3 | 23594 | complaint (_("location description stack overflow")); |
21ae7a4d JK |
23595 | return 0; |
23596 | } | |
23597 | ||
23598 | if (stacki <= 0) | |
23599 | { | |
b98664d3 | 23600 | complaint (_("location description stack underflow")); |
21ae7a4d JK |
23601 | return 0; |
23602 | } | |
23603 | } | |
23604 | return (stack[stacki]); | |
c906108c SS |
23605 | } |
23606 | ||
23607 | /* memory allocation interface */ | |
23608 | ||
c906108c | 23609 | static struct dwarf_block * |
7b5a2f43 | 23610 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c | 23611 | { |
8d749320 | 23612 | return XOBNEW (&cu->comp_unit_obstack, struct dwarf_block); |
c906108c SS |
23613 | } |
23614 | ||
c906108c | 23615 | static struct die_info * |
b60c80d6 | 23616 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
23617 | { |
23618 | struct die_info *die; | |
b60c80d6 DJ |
23619 | size_t size = sizeof (struct die_info); |
23620 | ||
23621 | if (num_attrs > 1) | |
23622 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 23623 | |
b60c80d6 | 23624 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
23625 | memset (die, 0, sizeof (struct die_info)); |
23626 | return (die); | |
23627 | } | |
2e276125 JB |
23628 | |
23629 | \f | |
23630 | /* Macro support. */ | |
23631 | ||
233d95b5 JK |
23632 | /* Return file name relative to the compilation directory of file number I in |
23633 | *LH's file name table. The result is allocated using xmalloc; the caller is | |
2e276125 | 23634 | responsible for freeing it. */ |
233d95b5 | 23635 | |
2e276125 | 23636 | static char * |
233d95b5 | 23637 | file_file_name (int file, struct line_header *lh) |
2e276125 | 23638 | { |
6a83a1e6 EZ |
23639 | /* Is the file number a valid index into the line header's file name |
23640 | table? Remember that file numbers start with one, not zero. */ | |
fff8551c | 23641 | if (1 <= file && file <= lh->file_names.size ()) |
6a83a1e6 | 23642 | { |
8c43009f | 23643 | const file_entry &fe = lh->file_names[file - 1]; |
6e70227d | 23644 | |
8c43009f PA |
23645 | if (!IS_ABSOLUTE_PATH (fe.name)) |
23646 | { | |
23647 | const char *dir = fe.include_dir (lh); | |
23648 | if (dir != NULL) | |
23649 | return concat (dir, SLASH_STRING, fe.name, (char *) NULL); | |
23650 | } | |
23651 | return xstrdup (fe.name); | |
6a83a1e6 | 23652 | } |
2e276125 JB |
23653 | else |
23654 | { | |
6a83a1e6 EZ |
23655 | /* The compiler produced a bogus file number. We can at least |
23656 | record the macro definitions made in the file, even if we | |
23657 | won't be able to find the file by name. */ | |
23658 | char fake_name[80]; | |
9a619af0 | 23659 | |
8c042590 PM |
23660 | xsnprintf (fake_name, sizeof (fake_name), |
23661 | "<bad macro file number %d>", file); | |
2e276125 | 23662 | |
b98664d3 | 23663 | complaint (_("bad file number in macro information (%d)"), |
6a83a1e6 | 23664 | file); |
2e276125 | 23665 | |
6a83a1e6 | 23666 | return xstrdup (fake_name); |
2e276125 JB |
23667 | } |
23668 | } | |
23669 | ||
233d95b5 JK |
23670 | /* Return the full name of file number I in *LH's file name table. |
23671 | Use COMP_DIR as the name of the current directory of the | |
23672 | compilation. The result is allocated using xmalloc; the caller is | |
23673 | responsible for freeing it. */ | |
23674 | static char * | |
23675 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
23676 | { | |
23677 | /* Is the file number a valid index into the line header's file name | |
23678 | table? Remember that file numbers start with one, not zero. */ | |
fff8551c | 23679 | if (1 <= file && file <= lh->file_names.size ()) |
233d95b5 JK |
23680 | { |
23681 | char *relative = file_file_name (file, lh); | |
23682 | ||
23683 | if (IS_ABSOLUTE_PATH (relative) || comp_dir == NULL) | |
23684 | return relative; | |
b36cec19 PA |
23685 | return reconcat (relative, comp_dir, SLASH_STRING, |
23686 | relative, (char *) NULL); | |
233d95b5 JK |
23687 | } |
23688 | else | |
23689 | return file_file_name (file, lh); | |
23690 | } | |
23691 | ||
2e276125 JB |
23692 | |
23693 | static struct macro_source_file * | |
23694 | macro_start_file (int file, int line, | |
23695 | struct macro_source_file *current_file, | |
43f3e411 | 23696 | struct line_header *lh) |
2e276125 | 23697 | { |
233d95b5 JK |
23698 | /* File name relative to the compilation directory of this source file. */ |
23699 | char *file_name = file_file_name (file, lh); | |
2e276125 | 23700 | |
2e276125 | 23701 | if (! current_file) |
abc9d0dc | 23702 | { |
fc474241 DE |
23703 | /* Note: We don't create a macro table for this compilation unit |
23704 | at all until we actually get a filename. */ | |
43f3e411 | 23705 | struct macro_table *macro_table = get_macro_table (); |
fc474241 | 23706 | |
abc9d0dc TT |
23707 | /* If we have no current file, then this must be the start_file |
23708 | directive for the compilation unit's main source file. */ | |
fc474241 DE |
23709 | current_file = macro_set_main (macro_table, file_name); |
23710 | macro_define_special (macro_table); | |
abc9d0dc | 23711 | } |
2e276125 | 23712 | else |
233d95b5 | 23713 | current_file = macro_include (current_file, line, file_name); |
2e276125 | 23714 | |
233d95b5 | 23715 | xfree (file_name); |
6e70227d | 23716 | |
2e276125 JB |
23717 | return current_file; |
23718 | } | |
23719 | ||
2e276125 JB |
23720 | static const char * |
23721 | consume_improper_spaces (const char *p, const char *body) | |
23722 | { | |
23723 | if (*p == ' ') | |
23724 | { | |
b98664d3 | 23725 | complaint (_("macro definition contains spaces " |
3e43a32a | 23726 | "in formal argument list:\n`%s'"), |
4d3c2250 | 23727 | body); |
2e276125 JB |
23728 | |
23729 | while (*p == ' ') | |
23730 | p++; | |
23731 | } | |
23732 | ||
23733 | return p; | |
23734 | } | |
23735 | ||
23736 | ||
23737 | static void | |
23738 | parse_macro_definition (struct macro_source_file *file, int line, | |
23739 | const char *body) | |
23740 | { | |
23741 | const char *p; | |
23742 | ||
23743 | /* The body string takes one of two forms. For object-like macro | |
23744 | definitions, it should be: | |
23745 | ||
23746 | <macro name> " " <definition> | |
23747 | ||
23748 | For function-like macro definitions, it should be: | |
23749 | ||
23750 | <macro name> "() " <definition> | |
23751 | or | |
23752 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
23753 | ||
23754 | Spaces may appear only where explicitly indicated, and in the | |
23755 | <definition>. | |
23756 | ||
23757 | The Dwarf 2 spec says that an object-like macro's name is always | |
23758 | followed by a space, but versions of GCC around March 2002 omit | |
6e70227d | 23759 | the space when the macro's definition is the empty string. |
2e276125 JB |
23760 | |
23761 | The Dwarf 2 spec says that there should be no spaces between the | |
23762 | formal arguments in a function-like macro's formal argument list, | |
23763 | but versions of GCC around March 2002 include spaces after the | |
23764 | commas. */ | |
23765 | ||
23766 | ||
23767 | /* Find the extent of the macro name. The macro name is terminated | |
23768 | by either a space or null character (for an object-like macro) or | |
23769 | an opening paren (for a function-like macro). */ | |
23770 | for (p = body; *p; p++) | |
23771 | if (*p == ' ' || *p == '(') | |
23772 | break; | |
23773 | ||
23774 | if (*p == ' ' || *p == '\0') | |
23775 | { | |
23776 | /* It's an object-like macro. */ | |
23777 | int name_len = p - body; | |
3f8a7804 | 23778 | char *name = savestring (body, name_len); |
2e276125 JB |
23779 | const char *replacement; |
23780 | ||
23781 | if (*p == ' ') | |
23782 | replacement = body + name_len + 1; | |
23783 | else | |
23784 | { | |
4d3c2250 | 23785 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
23786 | replacement = body + name_len; |
23787 | } | |
6e70227d | 23788 | |
2e276125 JB |
23789 | macro_define_object (file, line, name, replacement); |
23790 | ||
23791 | xfree (name); | |
23792 | } | |
23793 | else if (*p == '(') | |
23794 | { | |
23795 | /* It's a function-like macro. */ | |
3f8a7804 | 23796 | char *name = savestring (body, p - body); |
2e276125 JB |
23797 | int argc = 0; |
23798 | int argv_size = 1; | |
8d749320 | 23799 | char **argv = XNEWVEC (char *, argv_size); |
2e276125 JB |
23800 | |
23801 | p++; | |
23802 | ||
23803 | p = consume_improper_spaces (p, body); | |
23804 | ||
23805 | /* Parse the formal argument list. */ | |
23806 | while (*p && *p != ')') | |
23807 | { | |
23808 | /* Find the extent of the current argument name. */ | |
23809 | const char *arg_start = p; | |
23810 | ||
23811 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
23812 | p++; | |
23813 | ||
23814 | if (! *p || p == arg_start) | |
4d3c2250 | 23815 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
23816 | else |
23817 | { | |
23818 | /* Make sure argv has room for the new argument. */ | |
23819 | if (argc >= argv_size) | |
23820 | { | |
23821 | argv_size *= 2; | |
224c3ddb | 23822 | argv = XRESIZEVEC (char *, argv, argv_size); |
2e276125 JB |
23823 | } |
23824 | ||
3f8a7804 | 23825 | argv[argc++] = savestring (arg_start, p - arg_start); |
2e276125 JB |
23826 | } |
23827 | ||
23828 | p = consume_improper_spaces (p, body); | |
23829 | ||
23830 | /* Consume the comma, if present. */ | |
23831 | if (*p == ',') | |
23832 | { | |
23833 | p++; | |
23834 | ||
23835 | p = consume_improper_spaces (p, body); | |
23836 | } | |
23837 | } | |
23838 | ||
23839 | if (*p == ')') | |
23840 | { | |
23841 | p++; | |
23842 | ||
23843 | if (*p == ' ') | |
23844 | /* Perfectly formed definition, no complaints. */ | |
23845 | macro_define_function (file, line, name, | |
6e70227d | 23846 | argc, (const char **) argv, |
2e276125 JB |
23847 | p + 1); |
23848 | else if (*p == '\0') | |
23849 | { | |
23850 | /* Complain, but do define it. */ | |
4d3c2250 | 23851 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 | 23852 | macro_define_function (file, line, name, |
6e70227d | 23853 | argc, (const char **) argv, |
2e276125 JB |
23854 | p); |
23855 | } | |
23856 | else | |
23857 | /* Just complain. */ | |
4d3c2250 | 23858 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
23859 | } |
23860 | else | |
23861 | /* Just complain. */ | |
4d3c2250 | 23862 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
23863 | |
23864 | xfree (name); | |
23865 | { | |
23866 | int i; | |
23867 | ||
23868 | for (i = 0; i < argc; i++) | |
23869 | xfree (argv[i]); | |
23870 | } | |
23871 | xfree (argv); | |
23872 | } | |
23873 | else | |
4d3c2250 | 23874 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
23875 | } |
23876 | ||
cf2c3c16 TT |
23877 | /* Skip some bytes from BYTES according to the form given in FORM. |
23878 | Returns the new pointer. */ | |
2e276125 | 23879 | |
d521ce57 TT |
23880 | static const gdb_byte * |
23881 | skip_form_bytes (bfd *abfd, const gdb_byte *bytes, const gdb_byte *buffer_end, | |
cf2c3c16 TT |
23882 | enum dwarf_form form, |
23883 | unsigned int offset_size, | |
23884 | struct dwarf2_section_info *section) | |
2e276125 | 23885 | { |
cf2c3c16 | 23886 | unsigned int bytes_read; |
2e276125 | 23887 | |
cf2c3c16 | 23888 | switch (form) |
2e276125 | 23889 | { |
cf2c3c16 TT |
23890 | case DW_FORM_data1: |
23891 | case DW_FORM_flag: | |
23892 | ++bytes; | |
23893 | break; | |
23894 | ||
23895 | case DW_FORM_data2: | |
23896 | bytes += 2; | |
23897 | break; | |
23898 | ||
23899 | case DW_FORM_data4: | |
23900 | bytes += 4; | |
23901 | break; | |
23902 | ||
23903 | case DW_FORM_data8: | |
23904 | bytes += 8; | |
23905 | break; | |
23906 | ||
0224619f JK |
23907 | case DW_FORM_data16: |
23908 | bytes += 16; | |
23909 | break; | |
23910 | ||
cf2c3c16 TT |
23911 | case DW_FORM_string: |
23912 | read_direct_string (abfd, bytes, &bytes_read); | |
23913 | bytes += bytes_read; | |
23914 | break; | |
23915 | ||
23916 | case DW_FORM_sec_offset: | |
23917 | case DW_FORM_strp: | |
36586728 | 23918 | case DW_FORM_GNU_strp_alt: |
cf2c3c16 TT |
23919 | bytes += offset_size; |
23920 | break; | |
23921 | ||
23922 | case DW_FORM_block: | |
23923 | bytes += read_unsigned_leb128 (abfd, bytes, &bytes_read); | |
23924 | bytes += bytes_read; | |
23925 | break; | |
23926 | ||
23927 | case DW_FORM_block1: | |
23928 | bytes += 1 + read_1_byte (abfd, bytes); | |
23929 | break; | |
23930 | case DW_FORM_block2: | |
23931 | bytes += 2 + read_2_bytes (abfd, bytes); | |
23932 | break; | |
23933 | case DW_FORM_block4: | |
23934 | bytes += 4 + read_4_bytes (abfd, bytes); | |
23935 | break; | |
23936 | ||
23937 | case DW_FORM_sdata: | |
23938 | case DW_FORM_udata: | |
3019eac3 DE |
23939 | case DW_FORM_GNU_addr_index: |
23940 | case DW_FORM_GNU_str_index: | |
d521ce57 | 23941 | bytes = gdb_skip_leb128 (bytes, buffer_end); |
f664829e DE |
23942 | if (bytes == NULL) |
23943 | { | |
23944 | dwarf2_section_buffer_overflow_complaint (section); | |
23945 | return NULL; | |
23946 | } | |
cf2c3c16 TT |
23947 | break; |
23948 | ||
663c44ac JK |
23949 | case DW_FORM_implicit_const: |
23950 | break; | |
23951 | ||
cf2c3c16 TT |
23952 | default: |
23953 | { | |
b98664d3 | 23954 | complaint (_("invalid form 0x%x in `%s'"), |
a32a8923 | 23955 | form, get_section_name (section)); |
cf2c3c16 TT |
23956 | return NULL; |
23957 | } | |
2e276125 JB |
23958 | } |
23959 | ||
cf2c3c16 TT |
23960 | return bytes; |
23961 | } | |
757a13d0 | 23962 | |
cf2c3c16 TT |
23963 | /* A helper for dwarf_decode_macros that handles skipping an unknown |
23964 | opcode. Returns an updated pointer to the macro data buffer; or, | |
23965 | on error, issues a complaint and returns NULL. */ | |
757a13d0 | 23966 | |
d521ce57 | 23967 | static const gdb_byte * |
cf2c3c16 | 23968 | skip_unknown_opcode (unsigned int opcode, |
d521ce57 TT |
23969 | const gdb_byte **opcode_definitions, |
23970 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, | |
cf2c3c16 TT |
23971 | bfd *abfd, |
23972 | unsigned int offset_size, | |
23973 | struct dwarf2_section_info *section) | |
23974 | { | |
23975 | unsigned int bytes_read, i; | |
23976 | unsigned long arg; | |
d521ce57 | 23977 | const gdb_byte *defn; |
2e276125 | 23978 | |
cf2c3c16 | 23979 | if (opcode_definitions[opcode] == NULL) |
2e276125 | 23980 | { |
b98664d3 | 23981 | complaint (_("unrecognized DW_MACFINO opcode 0x%x"), |
cf2c3c16 TT |
23982 | opcode); |
23983 | return NULL; | |
23984 | } | |
2e276125 | 23985 | |
cf2c3c16 TT |
23986 | defn = opcode_definitions[opcode]; |
23987 | arg = read_unsigned_leb128 (abfd, defn, &bytes_read); | |
23988 | defn += bytes_read; | |
2e276125 | 23989 | |
cf2c3c16 TT |
23990 | for (i = 0; i < arg; ++i) |
23991 | { | |
aead7601 SM |
23992 | mac_ptr = skip_form_bytes (abfd, mac_ptr, mac_end, |
23993 | (enum dwarf_form) defn[i], offset_size, | |
f664829e | 23994 | section); |
cf2c3c16 TT |
23995 | if (mac_ptr == NULL) |
23996 | { | |
23997 | /* skip_form_bytes already issued the complaint. */ | |
23998 | return NULL; | |
23999 | } | |
24000 | } | |
757a13d0 | 24001 | |
cf2c3c16 TT |
24002 | return mac_ptr; |
24003 | } | |
757a13d0 | 24004 | |
cf2c3c16 TT |
24005 | /* A helper function which parses the header of a macro section. |
24006 | If the macro section is the extended (for now called "GNU") type, | |
24007 | then this updates *OFFSET_SIZE. Returns a pointer to just after | |
24008 | the header, or issues a complaint and returns NULL on error. */ | |
757a13d0 | 24009 | |
d521ce57 TT |
24010 | static const gdb_byte * |
24011 | dwarf_parse_macro_header (const gdb_byte **opcode_definitions, | |
cf2c3c16 | 24012 | bfd *abfd, |
d521ce57 | 24013 | const gdb_byte *mac_ptr, |
cf2c3c16 TT |
24014 | unsigned int *offset_size, |
24015 | int section_is_gnu) | |
24016 | { | |
24017 | memset (opcode_definitions, 0, 256 * sizeof (gdb_byte *)); | |
757a13d0 | 24018 | |
cf2c3c16 TT |
24019 | if (section_is_gnu) |
24020 | { | |
24021 | unsigned int version, flags; | |
757a13d0 | 24022 | |
cf2c3c16 | 24023 | version = read_2_bytes (abfd, mac_ptr); |
0af92d60 | 24024 | if (version != 4 && version != 5) |
cf2c3c16 | 24025 | { |
b98664d3 | 24026 | complaint (_("unrecognized version `%d' in .debug_macro section"), |
cf2c3c16 TT |
24027 | version); |
24028 | return NULL; | |
24029 | } | |
24030 | mac_ptr += 2; | |
757a13d0 | 24031 | |
cf2c3c16 TT |
24032 | flags = read_1_byte (abfd, mac_ptr); |
24033 | ++mac_ptr; | |
24034 | *offset_size = (flags & 1) ? 8 : 4; | |
757a13d0 | 24035 | |
cf2c3c16 TT |
24036 | if ((flags & 2) != 0) |
24037 | /* We don't need the line table offset. */ | |
24038 | mac_ptr += *offset_size; | |
757a13d0 | 24039 | |
cf2c3c16 TT |
24040 | /* Vendor opcode descriptions. */ |
24041 | if ((flags & 4) != 0) | |
24042 | { | |
24043 | unsigned int i, count; | |
757a13d0 | 24044 | |
cf2c3c16 TT |
24045 | count = read_1_byte (abfd, mac_ptr); |
24046 | ++mac_ptr; | |
24047 | for (i = 0; i < count; ++i) | |
24048 | { | |
24049 | unsigned int opcode, bytes_read; | |
24050 | unsigned long arg; | |
24051 | ||
24052 | opcode = read_1_byte (abfd, mac_ptr); | |
24053 | ++mac_ptr; | |
24054 | opcode_definitions[opcode] = mac_ptr; | |
24055 | arg = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24056 | mac_ptr += bytes_read; | |
24057 | mac_ptr += arg; | |
24058 | } | |
757a13d0 | 24059 | } |
cf2c3c16 | 24060 | } |
757a13d0 | 24061 | |
cf2c3c16 TT |
24062 | return mac_ptr; |
24063 | } | |
757a13d0 | 24064 | |
cf2c3c16 | 24065 | /* A helper for dwarf_decode_macros that handles the GNU extensions, |
0af92d60 | 24066 | including DW_MACRO_import. */ |
cf2c3c16 TT |
24067 | |
24068 | static void | |
ed2dc618 SM |
24069 | dwarf_decode_macro_bytes (struct dwarf2_per_objfile *dwarf2_per_objfile, |
24070 | bfd *abfd, | |
d521ce57 | 24071 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, |
cf2c3c16 | 24072 | struct macro_source_file *current_file, |
43f3e411 | 24073 | struct line_header *lh, |
cf2c3c16 | 24074 | struct dwarf2_section_info *section, |
36586728 | 24075 | int section_is_gnu, int section_is_dwz, |
cf2c3c16 | 24076 | unsigned int offset_size, |
8fc3fc34 | 24077 | htab_t include_hash) |
cf2c3c16 | 24078 | { |
4d663531 | 24079 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
cf2c3c16 TT |
24080 | enum dwarf_macro_record_type macinfo_type; |
24081 | int at_commandline; | |
d521ce57 | 24082 | const gdb_byte *opcode_definitions[256]; |
757a13d0 | 24083 | |
cf2c3c16 TT |
24084 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, |
24085 | &offset_size, section_is_gnu); | |
24086 | if (mac_ptr == NULL) | |
24087 | { | |
24088 | /* We already issued a complaint. */ | |
24089 | return; | |
24090 | } | |
757a13d0 JK |
24091 | |
24092 | /* Determines if GDB is still before first DW_MACINFO_start_file. If true | |
24093 | GDB is still reading the definitions from command line. First | |
24094 | DW_MACINFO_start_file will need to be ignored as it was already executed | |
24095 | to create CURRENT_FILE for the main source holding also the command line | |
24096 | definitions. On first met DW_MACINFO_start_file this flag is reset to | |
24097 | normally execute all the remaining DW_MACINFO_start_file macinfos. */ | |
24098 | ||
24099 | at_commandline = 1; | |
24100 | ||
24101 | do | |
24102 | { | |
24103 | /* Do we at least have room for a macinfo type byte? */ | |
24104 | if (mac_ptr >= mac_end) | |
24105 | { | |
f664829e | 24106 | dwarf2_section_buffer_overflow_complaint (section); |
757a13d0 JK |
24107 | break; |
24108 | } | |
24109 | ||
aead7601 | 24110 | macinfo_type = (enum dwarf_macro_record_type) read_1_byte (abfd, mac_ptr); |
757a13d0 JK |
24111 | mac_ptr++; |
24112 | ||
cf2c3c16 TT |
24113 | /* Note that we rely on the fact that the corresponding GNU and |
24114 | DWARF constants are the same. */ | |
132448f8 SM |
24115 | DIAGNOSTIC_PUSH |
24116 | DIAGNOSTIC_IGNORE_SWITCH_DIFFERENT_ENUM_TYPES | |
757a13d0 JK |
24117 | switch (macinfo_type) |
24118 | { | |
24119 | /* A zero macinfo type indicates the end of the macro | |
24120 | information. */ | |
24121 | case 0: | |
24122 | break; | |
2e276125 | 24123 | |
0af92d60 JK |
24124 | case DW_MACRO_define: |
24125 | case DW_MACRO_undef: | |
24126 | case DW_MACRO_define_strp: | |
24127 | case DW_MACRO_undef_strp: | |
24128 | case DW_MACRO_define_sup: | |
24129 | case DW_MACRO_undef_sup: | |
2e276125 | 24130 | { |
891d2f0b | 24131 | unsigned int bytes_read; |
2e276125 | 24132 | int line; |
d521ce57 | 24133 | const char *body; |
cf2c3c16 | 24134 | int is_define; |
2e276125 | 24135 | |
cf2c3c16 TT |
24136 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
24137 | mac_ptr += bytes_read; | |
24138 | ||
0af92d60 JK |
24139 | if (macinfo_type == DW_MACRO_define |
24140 | || macinfo_type == DW_MACRO_undef) | |
cf2c3c16 TT |
24141 | { |
24142 | body = read_direct_string (abfd, mac_ptr, &bytes_read); | |
24143 | mac_ptr += bytes_read; | |
24144 | } | |
24145 | else | |
24146 | { | |
24147 | LONGEST str_offset; | |
24148 | ||
24149 | str_offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
24150 | mac_ptr += offset_size; | |
2e276125 | 24151 | |
0af92d60 JK |
24152 | if (macinfo_type == DW_MACRO_define_sup |
24153 | || macinfo_type == DW_MACRO_undef_sup | |
f7a35f02 | 24154 | || section_is_dwz) |
36586728 | 24155 | { |
ed2dc618 SM |
24156 | struct dwz_file *dwz |
24157 | = dwarf2_get_dwz_file (dwarf2_per_objfile); | |
36586728 | 24158 | |
ed2dc618 SM |
24159 | body = read_indirect_string_from_dwz (objfile, |
24160 | dwz, str_offset); | |
36586728 TT |
24161 | } |
24162 | else | |
ed2dc618 SM |
24163 | body = read_indirect_string_at_offset (dwarf2_per_objfile, |
24164 | abfd, str_offset); | |
cf2c3c16 TT |
24165 | } |
24166 | ||
0af92d60 JK |
24167 | is_define = (macinfo_type == DW_MACRO_define |
24168 | || macinfo_type == DW_MACRO_define_strp | |
24169 | || macinfo_type == DW_MACRO_define_sup); | |
2e276125 | 24170 | if (! current_file) |
757a13d0 JK |
24171 | { |
24172 | /* DWARF violation as no main source is present. */ | |
b98664d3 | 24173 | complaint (_("debug info with no main source gives macro %s " |
757a13d0 | 24174 | "on line %d: %s"), |
cf2c3c16 TT |
24175 | is_define ? _("definition") : _("undefinition"), |
24176 | line, body); | |
757a13d0 JK |
24177 | break; |
24178 | } | |
3e43a32a MS |
24179 | if ((line == 0 && !at_commandline) |
24180 | || (line != 0 && at_commandline)) | |
b98664d3 | 24181 | complaint (_("debug info gives %s macro %s with %s line %d: %s"), |
757a13d0 | 24182 | at_commandline ? _("command-line") : _("in-file"), |
cf2c3c16 | 24183 | is_define ? _("definition") : _("undefinition"), |
757a13d0 JK |
24184 | line == 0 ? _("zero") : _("non-zero"), line, body); |
24185 | ||
cf2c3c16 | 24186 | if (is_define) |
757a13d0 | 24187 | parse_macro_definition (current_file, line, body); |
cf2c3c16 TT |
24188 | else |
24189 | { | |
0af92d60 JK |
24190 | gdb_assert (macinfo_type == DW_MACRO_undef |
24191 | || macinfo_type == DW_MACRO_undef_strp | |
24192 | || macinfo_type == DW_MACRO_undef_sup); | |
cf2c3c16 TT |
24193 | macro_undef (current_file, line, body); |
24194 | } | |
2e276125 JB |
24195 | } |
24196 | break; | |
24197 | ||
0af92d60 | 24198 | case DW_MACRO_start_file: |
2e276125 | 24199 | { |
891d2f0b | 24200 | unsigned int bytes_read; |
2e276125 JB |
24201 | int line, file; |
24202 | ||
24203 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24204 | mac_ptr += bytes_read; | |
24205 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24206 | mac_ptr += bytes_read; | |
24207 | ||
3e43a32a MS |
24208 | if ((line == 0 && !at_commandline) |
24209 | || (line != 0 && at_commandline)) | |
b98664d3 | 24210 | complaint (_("debug info gives source %d included " |
757a13d0 JK |
24211 | "from %s at %s line %d"), |
24212 | file, at_commandline ? _("command-line") : _("file"), | |
24213 | line == 0 ? _("zero") : _("non-zero"), line); | |
24214 | ||
24215 | if (at_commandline) | |
24216 | { | |
0af92d60 | 24217 | /* This DW_MACRO_start_file was executed in the |
cf2c3c16 | 24218 | pass one. */ |
757a13d0 JK |
24219 | at_commandline = 0; |
24220 | } | |
24221 | else | |
43f3e411 | 24222 | current_file = macro_start_file (file, line, current_file, lh); |
2e276125 JB |
24223 | } |
24224 | break; | |
24225 | ||
0af92d60 | 24226 | case DW_MACRO_end_file: |
2e276125 | 24227 | if (! current_file) |
b98664d3 | 24228 | complaint (_("macro debug info has an unmatched " |
3e43a32a | 24229 | "`close_file' directive")); |
2e276125 JB |
24230 | else |
24231 | { | |
24232 | current_file = current_file->included_by; | |
24233 | if (! current_file) | |
24234 | { | |
cf2c3c16 | 24235 | enum dwarf_macro_record_type next_type; |
2e276125 JB |
24236 | |
24237 | /* GCC circa March 2002 doesn't produce the zero | |
24238 | type byte marking the end of the compilation | |
24239 | unit. Complain if it's not there, but exit no | |
24240 | matter what. */ | |
24241 | ||
24242 | /* Do we at least have room for a macinfo type byte? */ | |
24243 | if (mac_ptr >= mac_end) | |
24244 | { | |
f664829e | 24245 | dwarf2_section_buffer_overflow_complaint (section); |
2e276125 JB |
24246 | return; |
24247 | } | |
24248 | ||
24249 | /* We don't increment mac_ptr here, so this is just | |
24250 | a look-ahead. */ | |
aead7601 SM |
24251 | next_type |
24252 | = (enum dwarf_macro_record_type) read_1_byte (abfd, | |
24253 | mac_ptr); | |
2e276125 | 24254 | if (next_type != 0) |
b98664d3 | 24255 | complaint (_("no terminating 0-type entry for " |
3e43a32a | 24256 | "macros in `.debug_macinfo' section")); |
2e276125 JB |
24257 | |
24258 | return; | |
24259 | } | |
24260 | } | |
24261 | break; | |
24262 | ||
0af92d60 JK |
24263 | case DW_MACRO_import: |
24264 | case DW_MACRO_import_sup: | |
cf2c3c16 TT |
24265 | { |
24266 | LONGEST offset; | |
8fc3fc34 | 24267 | void **slot; |
a036ba48 TT |
24268 | bfd *include_bfd = abfd; |
24269 | struct dwarf2_section_info *include_section = section; | |
d521ce57 | 24270 | const gdb_byte *include_mac_end = mac_end; |
a036ba48 | 24271 | int is_dwz = section_is_dwz; |
d521ce57 | 24272 | const gdb_byte *new_mac_ptr; |
cf2c3c16 TT |
24273 | |
24274 | offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
24275 | mac_ptr += offset_size; | |
24276 | ||
0af92d60 | 24277 | if (macinfo_type == DW_MACRO_import_sup) |
a036ba48 | 24278 | { |
ed2dc618 | 24279 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
a036ba48 | 24280 | |
4d663531 | 24281 | dwarf2_read_section (objfile, &dwz->macro); |
a036ba48 | 24282 | |
a036ba48 | 24283 | include_section = &dwz->macro; |
a32a8923 | 24284 | include_bfd = get_section_bfd_owner (include_section); |
a036ba48 TT |
24285 | include_mac_end = dwz->macro.buffer + dwz->macro.size; |
24286 | is_dwz = 1; | |
24287 | } | |
24288 | ||
24289 | new_mac_ptr = include_section->buffer + offset; | |
24290 | slot = htab_find_slot (include_hash, new_mac_ptr, INSERT); | |
24291 | ||
8fc3fc34 TT |
24292 | if (*slot != NULL) |
24293 | { | |
24294 | /* This has actually happened; see | |
24295 | http://sourceware.org/bugzilla/show_bug.cgi?id=13568. */ | |
b98664d3 | 24296 | complaint (_("recursive DW_MACRO_import in " |
8fc3fc34 TT |
24297 | ".debug_macro section")); |
24298 | } | |
24299 | else | |
24300 | { | |
d521ce57 | 24301 | *slot = (void *) new_mac_ptr; |
36586728 | 24302 | |
ed2dc618 SM |
24303 | dwarf_decode_macro_bytes (dwarf2_per_objfile, |
24304 | include_bfd, new_mac_ptr, | |
43f3e411 | 24305 | include_mac_end, current_file, lh, |
36586728 | 24306 | section, section_is_gnu, is_dwz, |
4d663531 | 24307 | offset_size, include_hash); |
8fc3fc34 | 24308 | |
d521ce57 | 24309 | htab_remove_elt (include_hash, (void *) new_mac_ptr); |
8fc3fc34 | 24310 | } |
cf2c3c16 TT |
24311 | } |
24312 | break; | |
24313 | ||
2e276125 | 24314 | case DW_MACINFO_vendor_ext: |
cf2c3c16 TT |
24315 | if (!section_is_gnu) |
24316 | { | |
24317 | unsigned int bytes_read; | |
2e276125 | 24318 | |
ac298888 TT |
24319 | /* This reads the constant, but since we don't recognize |
24320 | any vendor extensions, we ignore it. */ | |
24321 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
cf2c3c16 TT |
24322 | mac_ptr += bytes_read; |
24323 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
24324 | mac_ptr += bytes_read; | |
2e276125 | 24325 | |
cf2c3c16 TT |
24326 | /* We don't recognize any vendor extensions. */ |
24327 | break; | |
24328 | } | |
24329 | /* FALLTHROUGH */ | |
24330 | ||
24331 | default: | |
24332 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 24333 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
24334 | section); |
24335 | if (mac_ptr == NULL) | |
24336 | return; | |
24337 | break; | |
2e276125 | 24338 | } |
132448f8 | 24339 | DIAGNOSTIC_POP |
757a13d0 | 24340 | } while (macinfo_type != 0); |
2e276125 | 24341 | } |
8e19ed76 | 24342 | |
cf2c3c16 | 24343 | static void |
09262596 | 24344 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, |
43f3e411 | 24345 | int section_is_gnu) |
cf2c3c16 | 24346 | { |
518817b3 SM |
24347 | struct dwarf2_per_objfile *dwarf2_per_objfile |
24348 | = cu->per_cu->dwarf2_per_objfile; | |
bb5ed363 | 24349 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
09262596 DE |
24350 | struct line_header *lh = cu->line_header; |
24351 | bfd *abfd; | |
d521ce57 | 24352 | const gdb_byte *mac_ptr, *mac_end; |
cf2c3c16 TT |
24353 | struct macro_source_file *current_file = 0; |
24354 | enum dwarf_macro_record_type macinfo_type; | |
24355 | unsigned int offset_size = cu->header.offset_size; | |
d521ce57 | 24356 | const gdb_byte *opcode_definitions[256]; |
8fc3fc34 | 24357 | void **slot; |
09262596 DE |
24358 | struct dwarf2_section_info *section; |
24359 | const char *section_name; | |
24360 | ||
24361 | if (cu->dwo_unit != NULL) | |
24362 | { | |
24363 | if (section_is_gnu) | |
24364 | { | |
24365 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
24366 | section_name = ".debug_macro.dwo"; | |
24367 | } | |
24368 | else | |
24369 | { | |
24370 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
24371 | section_name = ".debug_macinfo.dwo"; | |
24372 | } | |
24373 | } | |
24374 | else | |
24375 | { | |
24376 | if (section_is_gnu) | |
24377 | { | |
24378 | section = &dwarf2_per_objfile->macro; | |
24379 | section_name = ".debug_macro"; | |
24380 | } | |
24381 | else | |
24382 | { | |
24383 | section = &dwarf2_per_objfile->macinfo; | |
24384 | section_name = ".debug_macinfo"; | |
24385 | } | |
24386 | } | |
cf2c3c16 | 24387 | |
bb5ed363 | 24388 | dwarf2_read_section (objfile, section); |
cf2c3c16 TT |
24389 | if (section->buffer == NULL) |
24390 | { | |
b98664d3 | 24391 | complaint (_("missing %s section"), section_name); |
cf2c3c16 TT |
24392 | return; |
24393 | } | |
a32a8923 | 24394 | abfd = get_section_bfd_owner (section); |
cf2c3c16 TT |
24395 | |
24396 | /* First pass: Find the name of the base filename. | |
24397 | This filename is needed in order to process all macros whose definition | |
24398 | (or undefinition) comes from the command line. These macros are defined | |
24399 | before the first DW_MACINFO_start_file entry, and yet still need to be | |
24400 | associated to the base file. | |
24401 | ||
24402 | To determine the base file name, we scan the macro definitions until we | |
24403 | reach the first DW_MACINFO_start_file entry. We then initialize | |
24404 | CURRENT_FILE accordingly so that any macro definition found before the | |
24405 | first DW_MACINFO_start_file can still be associated to the base file. */ | |
24406 | ||
24407 | mac_ptr = section->buffer + offset; | |
24408 | mac_end = section->buffer + section->size; | |
24409 | ||
24410 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, | |
24411 | &offset_size, section_is_gnu); | |
24412 | if (mac_ptr == NULL) | |
24413 | { | |
24414 | /* We already issued a complaint. */ | |
24415 | return; | |
24416 | } | |
24417 | ||
24418 | do | |
24419 | { | |
24420 | /* Do we at least have room for a macinfo type byte? */ | |
24421 | if (mac_ptr >= mac_end) | |
24422 | { | |
24423 | /* Complaint is printed during the second pass as GDB will probably | |
24424 | stop the first pass earlier upon finding | |
24425 | DW_MACINFO_start_file. */ | |
24426 | break; | |
24427 | } | |
24428 | ||
aead7601 | 24429 | macinfo_type = (enum dwarf_macro_record_type) read_1_byte (abfd, mac_ptr); |
cf2c3c16 TT |
24430 | mac_ptr++; |
24431 | ||
24432 | /* Note that we rely on the fact that the corresponding GNU and | |
24433 | DWARF constants are the same. */ | |
132448f8 SM |
24434 | DIAGNOSTIC_PUSH |
24435 | DIAGNOSTIC_IGNORE_SWITCH_DIFFERENT_ENUM_TYPES | |
cf2c3c16 TT |
24436 | switch (macinfo_type) |
24437 | { | |
24438 | /* A zero macinfo type indicates the end of the macro | |
24439 | information. */ | |
24440 | case 0: | |
24441 | break; | |
24442 | ||
0af92d60 JK |
24443 | case DW_MACRO_define: |
24444 | case DW_MACRO_undef: | |
cf2c3c16 TT |
24445 | /* Only skip the data by MAC_PTR. */ |
24446 | { | |
24447 | unsigned int bytes_read; | |
24448 | ||
24449 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24450 | mac_ptr += bytes_read; | |
24451 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
24452 | mac_ptr += bytes_read; | |
24453 | } | |
24454 | break; | |
24455 | ||
0af92d60 | 24456 | case DW_MACRO_start_file: |
cf2c3c16 TT |
24457 | { |
24458 | unsigned int bytes_read; | |
24459 | int line, file; | |
24460 | ||
24461 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24462 | mac_ptr += bytes_read; | |
24463 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24464 | mac_ptr += bytes_read; | |
24465 | ||
43f3e411 | 24466 | current_file = macro_start_file (file, line, current_file, lh); |
cf2c3c16 TT |
24467 | } |
24468 | break; | |
24469 | ||
0af92d60 | 24470 | case DW_MACRO_end_file: |
cf2c3c16 TT |
24471 | /* No data to skip by MAC_PTR. */ |
24472 | break; | |
24473 | ||
0af92d60 JK |
24474 | case DW_MACRO_define_strp: |
24475 | case DW_MACRO_undef_strp: | |
24476 | case DW_MACRO_define_sup: | |
24477 | case DW_MACRO_undef_sup: | |
cf2c3c16 TT |
24478 | { |
24479 | unsigned int bytes_read; | |
24480 | ||
24481 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24482 | mac_ptr += bytes_read; | |
24483 | mac_ptr += offset_size; | |
24484 | } | |
24485 | break; | |
24486 | ||
0af92d60 JK |
24487 | case DW_MACRO_import: |
24488 | case DW_MACRO_import_sup: | |
cf2c3c16 | 24489 | /* Note that, according to the spec, a transparent include |
0af92d60 | 24490 | chain cannot call DW_MACRO_start_file. So, we can just |
cf2c3c16 TT |
24491 | skip this opcode. */ |
24492 | mac_ptr += offset_size; | |
24493 | break; | |
24494 | ||
24495 | case DW_MACINFO_vendor_ext: | |
24496 | /* Only skip the data by MAC_PTR. */ | |
24497 | if (!section_is_gnu) | |
24498 | { | |
24499 | unsigned int bytes_read; | |
24500 | ||
24501 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24502 | mac_ptr += bytes_read; | |
24503 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
24504 | mac_ptr += bytes_read; | |
24505 | } | |
24506 | /* FALLTHROUGH */ | |
24507 | ||
24508 | default: | |
24509 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 24510 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
24511 | section); |
24512 | if (mac_ptr == NULL) | |
24513 | return; | |
24514 | break; | |
24515 | } | |
132448f8 | 24516 | DIAGNOSTIC_POP |
cf2c3c16 TT |
24517 | } while (macinfo_type != 0 && current_file == NULL); |
24518 | ||
24519 | /* Second pass: Process all entries. | |
24520 | ||
24521 | Use the AT_COMMAND_LINE flag to determine whether we are still processing | |
24522 | command-line macro definitions/undefinitions. This flag is unset when we | |
24523 | reach the first DW_MACINFO_start_file entry. */ | |
24524 | ||
fc4007c9 TT |
24525 | htab_up include_hash (htab_create_alloc (1, htab_hash_pointer, |
24526 | htab_eq_pointer, | |
24527 | NULL, xcalloc, xfree)); | |
8fc3fc34 | 24528 | mac_ptr = section->buffer + offset; |
fc4007c9 | 24529 | slot = htab_find_slot (include_hash.get (), mac_ptr, INSERT); |
d521ce57 | 24530 | *slot = (void *) mac_ptr; |
ed2dc618 SM |
24531 | dwarf_decode_macro_bytes (dwarf2_per_objfile, |
24532 | abfd, mac_ptr, mac_end, | |
43f3e411 | 24533 | current_file, lh, section, |
fc4007c9 TT |
24534 | section_is_gnu, 0, offset_size, |
24535 | include_hash.get ()); | |
cf2c3c16 TT |
24536 | } |
24537 | ||
8e19ed76 | 24538 | /* Check if the attribute's form is a DW_FORM_block* |
0963b4bd | 24539 | if so return true else false. */ |
380bca97 | 24540 | |
8e19ed76 | 24541 | static int |
6e5a29e1 | 24542 | attr_form_is_block (const struct attribute *attr) |
8e19ed76 PS |
24543 | { |
24544 | return (attr == NULL ? 0 : | |
24545 | attr->form == DW_FORM_block1 | |
24546 | || attr->form == DW_FORM_block2 | |
24547 | || attr->form == DW_FORM_block4 | |
2dc7f7b3 TT |
24548 | || attr->form == DW_FORM_block |
24549 | || attr->form == DW_FORM_exprloc); | |
8e19ed76 | 24550 | } |
4c2df51b | 24551 | |
c6a0999f JB |
24552 | /* Return non-zero if ATTR's value is a section offset --- classes |
24553 | lineptr, loclistptr, macptr or rangelistptr --- or zero, otherwise. | |
24554 | You may use DW_UNSND (attr) to retrieve such offsets. | |
24555 | ||
24556 | Section 7.5.4, "Attribute Encodings", explains that no attribute | |
24557 | may have a value that belongs to more than one of these classes; it | |
24558 | would be ambiguous if we did, because we use the same forms for all | |
24559 | of them. */ | |
380bca97 | 24560 | |
3690dd37 | 24561 | static int |
6e5a29e1 | 24562 | attr_form_is_section_offset (const struct attribute *attr) |
3690dd37 JB |
24563 | { |
24564 | return (attr->form == DW_FORM_data4 | |
2dc7f7b3 TT |
24565 | || attr->form == DW_FORM_data8 |
24566 | || attr->form == DW_FORM_sec_offset); | |
3690dd37 JB |
24567 | } |
24568 | ||
3690dd37 JB |
24569 | /* Return non-zero if ATTR's value falls in the 'constant' class, or |
24570 | zero otherwise. When this function returns true, you can apply | |
24571 | dwarf2_get_attr_constant_value to it. | |
24572 | ||
24573 | However, note that for some attributes you must check | |
24574 | attr_form_is_section_offset before using this test. DW_FORM_data4 | |
24575 | and DW_FORM_data8 are members of both the constant class, and of | |
24576 | the classes that contain offsets into other debug sections | |
24577 | (lineptr, loclistptr, macptr or rangelistptr). The DWARF spec says | |
24578 | that, if an attribute's can be either a constant or one of the | |
24579 | section offset classes, DW_FORM_data4 and DW_FORM_data8 should be | |
0224619f JK |
24580 | taken as section offsets, not constants. |
24581 | ||
24582 | DW_FORM_data16 is not considered as dwarf2_get_attr_constant_value | |
24583 | cannot handle that. */ | |
380bca97 | 24584 | |
3690dd37 | 24585 | static int |
6e5a29e1 | 24586 | attr_form_is_constant (const struct attribute *attr) |
3690dd37 JB |
24587 | { |
24588 | switch (attr->form) | |
24589 | { | |
24590 | case DW_FORM_sdata: | |
24591 | case DW_FORM_udata: | |
24592 | case DW_FORM_data1: | |
24593 | case DW_FORM_data2: | |
24594 | case DW_FORM_data4: | |
24595 | case DW_FORM_data8: | |
663c44ac | 24596 | case DW_FORM_implicit_const: |
3690dd37 JB |
24597 | return 1; |
24598 | default: | |
24599 | return 0; | |
24600 | } | |
24601 | } | |
24602 | ||
7771576e SA |
24603 | |
24604 | /* DW_ADDR is always stored already as sect_offset; despite for the forms | |
24605 | besides DW_FORM_ref_addr it is stored as cu_offset in the DWARF file. */ | |
24606 | ||
24607 | static int | |
6e5a29e1 | 24608 | attr_form_is_ref (const struct attribute *attr) |
7771576e SA |
24609 | { |
24610 | switch (attr->form) | |
24611 | { | |
24612 | case DW_FORM_ref_addr: | |
24613 | case DW_FORM_ref1: | |
24614 | case DW_FORM_ref2: | |
24615 | case DW_FORM_ref4: | |
24616 | case DW_FORM_ref8: | |
24617 | case DW_FORM_ref_udata: | |
24618 | case DW_FORM_GNU_ref_alt: | |
24619 | return 1; | |
24620 | default: | |
24621 | return 0; | |
24622 | } | |
24623 | } | |
24624 | ||
3019eac3 DE |
24625 | /* Return the .debug_loc section to use for CU. |
24626 | For DWO files use .debug_loc.dwo. */ | |
24627 | ||
24628 | static struct dwarf2_section_info * | |
24629 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
24630 | { | |
518817b3 SM |
24631 | struct dwarf2_per_objfile *dwarf2_per_objfile |
24632 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 24633 | |
3019eac3 | 24634 | if (cu->dwo_unit) |
43988095 JK |
24635 | { |
24636 | struct dwo_sections *sections = &cu->dwo_unit->dwo_file->sections; | |
24637 | ||
24638 | return cu->header.version >= 5 ? §ions->loclists : §ions->loc; | |
24639 | } | |
24640 | return (cu->header.version >= 5 ? &dwarf2_per_objfile->loclists | |
24641 | : &dwarf2_per_objfile->loc); | |
3019eac3 DE |
24642 | } |
24643 | ||
8cf6f0b1 TT |
24644 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
24645 | ||
24646 | static void | |
24647 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
24648 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 24649 | const struct attribute *attr) |
8cf6f0b1 | 24650 | { |
518817b3 SM |
24651 | struct dwarf2_per_objfile *dwarf2_per_objfile |
24652 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 DE |
24653 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
24654 | ||
24655 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
8cf6f0b1 TT |
24656 | |
24657 | baton->per_cu = cu->per_cu; | |
24658 | gdb_assert (baton->per_cu); | |
24659 | /* We don't know how long the location list is, but make sure we | |
24660 | don't run off the edge of the section. */ | |
3019eac3 DE |
24661 | baton->size = section->size - DW_UNSND (attr); |
24662 | baton->data = section->buffer + DW_UNSND (attr); | |
8cf6f0b1 | 24663 | baton->base_address = cu->base_address; |
f664829e | 24664 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
24665 | } |
24666 | ||
4c2df51b | 24667 | static void |
ff39bb5e | 24668 | dwarf2_symbol_mark_computed (const struct attribute *attr, struct symbol *sym, |
f1e6e072 | 24669 | struct dwarf2_cu *cu, int is_block) |
4c2df51b | 24670 | { |
518817b3 SM |
24671 | struct dwarf2_per_objfile *dwarf2_per_objfile |
24672 | = cu->per_cu->dwarf2_per_objfile; | |
bb5ed363 | 24673 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 | 24674 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 24675 | |
3690dd37 | 24676 | if (attr_form_is_section_offset (attr) |
3019eac3 | 24677 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
24678 | the section. If so, fall through to the complaint in the |
24679 | other branch. */ | |
3019eac3 | 24680 | && DW_UNSND (attr) < dwarf2_section_size (objfile, section)) |
4c2df51b | 24681 | { |
0d53c4c4 | 24682 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 24683 | |
8d749320 | 24684 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_loclist_baton); |
4c2df51b | 24685 | |
8cf6f0b1 | 24686 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 24687 | |
d00adf39 | 24688 | if (cu->base_known == 0) |
b98664d3 | 24689 | complaint (_("Location list used without " |
3e43a32a | 24690 | "specifying the CU base address.")); |
4c2df51b | 24691 | |
f1e6e072 TT |
24692 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
24693 | ? dwarf2_loclist_block_index | |
24694 | : dwarf2_loclist_index); | |
0d53c4c4 DJ |
24695 | SYMBOL_LOCATION_BATON (sym) = baton; |
24696 | } | |
24697 | else | |
24698 | { | |
24699 | struct dwarf2_locexpr_baton *baton; | |
24700 | ||
8d749320 | 24701 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
ae0d2f24 UW |
24702 | baton->per_cu = cu->per_cu; |
24703 | gdb_assert (baton->per_cu); | |
0d53c4c4 DJ |
24704 | |
24705 | if (attr_form_is_block (attr)) | |
24706 | { | |
24707 | /* Note that we're just copying the block's data pointer | |
24708 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
24709 | info_buffer for SYM's objfile; right now we never release |
24710 | that buffer, but when we do clean up properly this may | |
24711 | need to change. */ | |
0d53c4c4 DJ |
24712 | baton->size = DW_BLOCK (attr)->size; |
24713 | baton->data = DW_BLOCK (attr)->data; | |
24714 | } | |
24715 | else | |
24716 | { | |
24717 | dwarf2_invalid_attrib_class_complaint ("location description", | |
24718 | SYMBOL_NATURAL_NAME (sym)); | |
24719 | baton->size = 0; | |
0d53c4c4 | 24720 | } |
6e70227d | 24721 | |
f1e6e072 TT |
24722 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
24723 | ? dwarf2_locexpr_block_index | |
24724 | : dwarf2_locexpr_index); | |
0d53c4c4 DJ |
24725 | SYMBOL_LOCATION_BATON (sym) = baton; |
24726 | } | |
4c2df51b | 24727 | } |
6502dd73 | 24728 | |
9aa1f1e3 TT |
24729 | /* Return the OBJFILE associated with the compilation unit CU. If CU |
24730 | came from a separate debuginfo file, then the master objfile is | |
24731 | returned. */ | |
ae0d2f24 UW |
24732 | |
24733 | struct objfile * | |
24734 | dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *per_cu) | |
24735 | { | |
e3b94546 | 24736 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
ae0d2f24 UW |
24737 | |
24738 | /* Return the master objfile, so that we can report and look up the | |
24739 | correct file containing this variable. */ | |
24740 | if (objfile->separate_debug_objfile_backlink) | |
24741 | objfile = objfile->separate_debug_objfile_backlink; | |
24742 | ||
24743 | return objfile; | |
24744 | } | |
24745 | ||
96408a79 SA |
24746 | /* Return comp_unit_head for PER_CU, either already available in PER_CU->CU |
24747 | (CU_HEADERP is unused in such case) or prepare a temporary copy at | |
24748 | CU_HEADERP first. */ | |
24749 | ||
24750 | static const struct comp_unit_head * | |
24751 | per_cu_header_read_in (struct comp_unit_head *cu_headerp, | |
24752 | struct dwarf2_per_cu_data *per_cu) | |
24753 | { | |
d521ce57 | 24754 | const gdb_byte *info_ptr; |
96408a79 SA |
24755 | |
24756 | if (per_cu->cu) | |
24757 | return &per_cu->cu->header; | |
24758 | ||
9c541725 | 24759 | info_ptr = per_cu->section->buffer + to_underlying (per_cu->sect_off); |
96408a79 SA |
24760 | |
24761 | memset (cu_headerp, 0, sizeof (*cu_headerp)); | |
43988095 JK |
24762 | read_comp_unit_head (cu_headerp, info_ptr, per_cu->section, |
24763 | rcuh_kind::COMPILE); | |
96408a79 SA |
24764 | |
24765 | return cu_headerp; | |
24766 | } | |
24767 | ||
ae0d2f24 UW |
24768 | /* Return the address size given in the compilation unit header for CU. */ |
24769 | ||
98714339 | 24770 | int |
ae0d2f24 UW |
24771 | dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *per_cu) |
24772 | { | |
96408a79 SA |
24773 | struct comp_unit_head cu_header_local; |
24774 | const struct comp_unit_head *cu_headerp; | |
c471e790 | 24775 | |
96408a79 SA |
24776 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
24777 | ||
24778 | return cu_headerp->addr_size; | |
ae0d2f24 UW |
24779 | } |
24780 | ||
9eae7c52 TT |
24781 | /* Return the offset size given in the compilation unit header for CU. */ |
24782 | ||
24783 | int | |
24784 | dwarf2_per_cu_offset_size (struct dwarf2_per_cu_data *per_cu) | |
24785 | { | |
96408a79 SA |
24786 | struct comp_unit_head cu_header_local; |
24787 | const struct comp_unit_head *cu_headerp; | |
9c6c53f7 | 24788 | |
96408a79 SA |
24789 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
24790 | ||
24791 | return cu_headerp->offset_size; | |
24792 | } | |
24793 | ||
24794 | /* See its dwarf2loc.h declaration. */ | |
24795 | ||
24796 | int | |
24797 | dwarf2_per_cu_ref_addr_size (struct dwarf2_per_cu_data *per_cu) | |
24798 | { | |
24799 | struct comp_unit_head cu_header_local; | |
24800 | const struct comp_unit_head *cu_headerp; | |
24801 | ||
24802 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); | |
24803 | ||
24804 | if (cu_headerp->version == 2) | |
24805 | return cu_headerp->addr_size; | |
24806 | else | |
24807 | return cu_headerp->offset_size; | |
181cebd4 JK |
24808 | } |
24809 | ||
9aa1f1e3 TT |
24810 | /* Return the text offset of the CU. The returned offset comes from |
24811 | this CU's objfile. If this objfile came from a separate debuginfo | |
24812 | file, then the offset may be different from the corresponding | |
24813 | offset in the parent objfile. */ | |
24814 | ||
24815 | CORE_ADDR | |
24816 | dwarf2_per_cu_text_offset (struct dwarf2_per_cu_data *per_cu) | |
24817 | { | |
e3b94546 | 24818 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
9aa1f1e3 TT |
24819 | |
24820 | return ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
24821 | } | |
24822 | ||
43988095 JK |
24823 | /* Return DWARF version number of PER_CU. */ |
24824 | ||
24825 | short | |
24826 | dwarf2_version (struct dwarf2_per_cu_data *per_cu) | |
24827 | { | |
24828 | return per_cu->dwarf_version; | |
24829 | } | |
24830 | ||
348e048f DE |
24831 | /* Locate the .debug_info compilation unit from CU's objfile which contains |
24832 | the DIE at OFFSET. Raises an error on failure. */ | |
ae038cb0 DJ |
24833 | |
24834 | static struct dwarf2_per_cu_data * | |
9c541725 | 24835 | dwarf2_find_containing_comp_unit (sect_offset sect_off, |
36586728 | 24836 | unsigned int offset_in_dwz, |
ed2dc618 | 24837 | struct dwarf2_per_objfile *dwarf2_per_objfile) |
ae038cb0 DJ |
24838 | { |
24839 | struct dwarf2_per_cu_data *this_cu; | |
24840 | int low, high; | |
36586728 | 24841 | const sect_offset *cu_off; |
ae038cb0 | 24842 | |
ae038cb0 | 24843 | low = 0; |
b76e467d | 24844 | high = dwarf2_per_objfile->all_comp_units.size () - 1; |
ae038cb0 DJ |
24845 | while (high > low) |
24846 | { | |
36586728 | 24847 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 24848 | int mid = low + (high - low) / 2; |
9a619af0 | 24849 | |
36586728 | 24850 | mid_cu = dwarf2_per_objfile->all_comp_units[mid]; |
9c541725 | 24851 | cu_off = &mid_cu->sect_off; |
36586728 | 24852 | if (mid_cu->is_dwz > offset_in_dwz |
9c541725 | 24853 | || (mid_cu->is_dwz == offset_in_dwz && *cu_off >= sect_off)) |
ae038cb0 DJ |
24854 | high = mid; |
24855 | else | |
24856 | low = mid + 1; | |
24857 | } | |
24858 | gdb_assert (low == high); | |
36586728 | 24859 | this_cu = dwarf2_per_objfile->all_comp_units[low]; |
9c541725 PA |
24860 | cu_off = &this_cu->sect_off; |
24861 | if (this_cu->is_dwz != offset_in_dwz || *cu_off > sect_off) | |
ae038cb0 | 24862 | { |
36586728 | 24863 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 | 24864 | error (_("Dwarf Error: could not find partial DIE containing " |
9d8780f0 SM |
24865 | "offset %s [in module %s]"), |
24866 | sect_offset_str (sect_off), | |
ed2dc618 | 24867 | bfd_get_filename (dwarf2_per_objfile->objfile->obfd)); |
10b3939b | 24868 | |
9c541725 PA |
24869 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->sect_off |
24870 | <= sect_off); | |
ae038cb0 DJ |
24871 | return dwarf2_per_objfile->all_comp_units[low-1]; |
24872 | } | |
24873 | else | |
24874 | { | |
24875 | this_cu = dwarf2_per_objfile->all_comp_units[low]; | |
b76e467d | 24876 | if (low == dwarf2_per_objfile->all_comp_units.size () - 1 |
9c541725 | 24877 | && sect_off >= this_cu->sect_off + this_cu->length) |
9d8780f0 | 24878 | error (_("invalid dwarf2 offset %s"), sect_offset_str (sect_off)); |
9c541725 | 24879 | gdb_assert (sect_off < this_cu->sect_off + this_cu->length); |
ae038cb0 DJ |
24880 | return this_cu; |
24881 | } | |
24882 | } | |
24883 | ||
23745b47 | 24884 | /* Initialize dwarf2_cu CU, owned by PER_CU. */ |
93311388 | 24885 | |
fcd3b13d SM |
24886 | dwarf2_cu::dwarf2_cu (struct dwarf2_per_cu_data *per_cu_) |
24887 | : per_cu (per_cu_), | |
24888 | mark (0), | |
24889 | has_loclist (0), | |
24890 | checked_producer (0), | |
24891 | producer_is_gxx_lt_4_6 (0), | |
24892 | producer_is_gcc_lt_4_3 (0), | |
24893 | producer_is_icc_lt_14 (0), | |
24894 | processing_has_namespace_info (0) | |
93311388 | 24895 | { |
fcd3b13d SM |
24896 | per_cu->cu = this; |
24897 | } | |
24898 | ||
24899 | /* Destroy a dwarf2_cu. */ | |
24900 | ||
24901 | dwarf2_cu::~dwarf2_cu () | |
24902 | { | |
24903 | per_cu->cu = NULL; | |
9816fde3 JK |
24904 | } |
24905 | ||
24906 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
24907 | ||
24908 | static void | |
95554aad TT |
24909 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
24910 | enum language pretend_language) | |
9816fde3 JK |
24911 | { |
24912 | struct attribute *attr; | |
24913 | ||
24914 | /* Set the language we're debugging. */ | |
24915 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
24916 | if (attr) | |
24917 | set_cu_language (DW_UNSND (attr), cu); | |
24918 | else | |
9cded63f | 24919 | { |
95554aad | 24920 | cu->language = pretend_language; |
9cded63f TT |
24921 | cu->language_defn = language_def (cu->language); |
24922 | } | |
dee91e82 | 24923 | |
7d45c7c3 | 24924 | cu->producer = dwarf2_string_attr (comp_unit_die, DW_AT_producer, cu); |
93311388 DE |
24925 | } |
24926 | ||
ae038cb0 DJ |
24927 | /* Increase the age counter on each cached compilation unit, and free |
24928 | any that are too old. */ | |
24929 | ||
24930 | static void | |
ed2dc618 | 24931 | age_cached_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
ae038cb0 DJ |
24932 | { |
24933 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
24934 | ||
24935 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
24936 | per_cu = dwarf2_per_objfile->read_in_chain; | |
24937 | while (per_cu != NULL) | |
24938 | { | |
24939 | per_cu->cu->last_used ++; | |
b4f54984 | 24940 | if (per_cu->cu->last_used <= dwarf_max_cache_age) |
ae038cb0 DJ |
24941 | dwarf2_mark (per_cu->cu); |
24942 | per_cu = per_cu->cu->read_in_chain; | |
24943 | } | |
24944 | ||
24945 | per_cu = dwarf2_per_objfile->read_in_chain; | |
24946 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
24947 | while (per_cu != NULL) | |
24948 | { | |
24949 | struct dwarf2_per_cu_data *next_cu; | |
24950 | ||
24951 | next_cu = per_cu->cu->read_in_chain; | |
24952 | ||
24953 | if (!per_cu->cu->mark) | |
24954 | { | |
fcd3b13d | 24955 | delete per_cu->cu; |
ae038cb0 DJ |
24956 | *last_chain = next_cu; |
24957 | } | |
24958 | else | |
24959 | last_chain = &per_cu->cu->read_in_chain; | |
24960 | ||
24961 | per_cu = next_cu; | |
24962 | } | |
24963 | } | |
24964 | ||
24965 | /* Remove a single compilation unit from the cache. */ | |
24966 | ||
24967 | static void | |
dee91e82 | 24968 | free_one_cached_comp_unit (struct dwarf2_per_cu_data *target_per_cu) |
ae038cb0 DJ |
24969 | { |
24970 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
ed2dc618 SM |
24971 | struct dwarf2_per_objfile *dwarf2_per_objfile |
24972 | = target_per_cu->dwarf2_per_objfile; | |
ae038cb0 DJ |
24973 | |
24974 | per_cu = dwarf2_per_objfile->read_in_chain; | |
24975 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
24976 | while (per_cu != NULL) | |
24977 | { | |
24978 | struct dwarf2_per_cu_data *next_cu; | |
24979 | ||
24980 | next_cu = per_cu->cu->read_in_chain; | |
24981 | ||
dee91e82 | 24982 | if (per_cu == target_per_cu) |
ae038cb0 | 24983 | { |
fcd3b13d | 24984 | delete per_cu->cu; |
dee91e82 | 24985 | per_cu->cu = NULL; |
ae038cb0 DJ |
24986 | *last_chain = next_cu; |
24987 | break; | |
24988 | } | |
24989 | else | |
24990 | last_chain = &per_cu->cu->read_in_chain; | |
24991 | ||
24992 | per_cu = next_cu; | |
24993 | } | |
24994 | } | |
24995 | ||
d95d3aef | 24996 | /* Cleanup function for the dwarf2_per_objfile data. */ |
fe3e1990 | 24997 | |
d95d3aef TT |
24998 | static void |
24999 | dwarf2_free_objfile (struct objfile *objfile, void *datum) | |
fe3e1990 | 25000 | { |
ed2dc618 | 25001 | struct dwarf2_per_objfile *dwarf2_per_objfile |
d95d3aef | 25002 | = static_cast<struct dwarf2_per_objfile *> (datum); |
fe3e1990 | 25003 | |
fd90ace4 | 25004 | delete dwarf2_per_objfile; |
fe3e1990 DJ |
25005 | } |
25006 | ||
dee91e82 DE |
25007 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
25008 | We store these in a hash table separate from the DIEs, and preserve them | |
25009 | when the DIEs are flushed out of cache. | |
25010 | ||
25011 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 | 25012 | uniquely identify the type. A file may have multiple .debug_types sections, |
c88ee1f0 DE |
25013 | or the type may come from a DWO file. Furthermore, while it's more logical |
25014 | to use per_cu->section+offset, with Fission the section with the data is in | |
25015 | the DWO file but we don't know that section at the point we need it. | |
25016 | We have to use something in dwarf2_per_cu_data (or the pointer to it) | |
25017 | because we can enter the lookup routine, get_die_type_at_offset, from | |
25018 | outside this file, and thus won't necessarily have PER_CU->cu. | |
25019 | Fortunately, PER_CU is stable for the life of the objfile. */ | |
1c379e20 | 25020 | |
dee91e82 | 25021 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 25022 | { |
dee91e82 | 25023 | const struct dwarf2_per_cu_data *per_cu; |
9c541725 | 25024 | sect_offset sect_off; |
1c379e20 DJ |
25025 | struct type *type; |
25026 | }; | |
25027 | ||
dee91e82 | 25028 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
25029 | |
25030 | static hashval_t | |
dee91e82 | 25031 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 25032 | { |
9a3c8263 SM |
25033 | const struct dwarf2_per_cu_offset_and_type *ofs |
25034 | = (const struct dwarf2_per_cu_offset_and_type *) item; | |
9a619af0 | 25035 | |
9c541725 | 25036 | return (uintptr_t) ofs->per_cu + to_underlying (ofs->sect_off); |
1c379e20 DJ |
25037 | } |
25038 | ||
dee91e82 | 25039 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
25040 | |
25041 | static int | |
dee91e82 | 25042 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 25043 | { |
9a3c8263 SM |
25044 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs |
25045 | = (const struct dwarf2_per_cu_offset_and_type *) item_lhs; | |
25046 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs | |
25047 | = (const struct dwarf2_per_cu_offset_and_type *) item_rhs; | |
9a619af0 | 25048 | |
dee91e82 | 25049 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
9c541725 | 25050 | && ofs_lhs->sect_off == ofs_rhs->sect_off); |
1c379e20 DJ |
25051 | } |
25052 | ||
25053 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
25054 | table if necessary. For convenience, return TYPE. |
25055 | ||
25056 | The DIEs reading must have careful ordering to: | |
25057 | * Not cause infite loops trying to read in DIEs as a prerequisite for | |
25058 | reading current DIE. | |
25059 | * Not trying to dereference contents of still incompletely read in types | |
25060 | while reading in other DIEs. | |
25061 | * Enable referencing still incompletely read in types just by a pointer to | |
25062 | the type without accessing its fields. | |
25063 | ||
25064 | Therefore caller should follow these rules: | |
25065 | * Try to fetch any prerequisite types we may need to build this DIE type | |
25066 | before building the type and calling set_die_type. | |
e71ec853 | 25067 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
25068 | possible before fetching more types to complete the current type. |
25069 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 25070 | |
f792889a | 25071 | static struct type * |
1c379e20 DJ |
25072 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
25073 | { | |
518817b3 SM |
25074 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25075 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 25076 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
ed2dc618 | 25077 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3cdcd0ce JB |
25078 | struct attribute *attr; |
25079 | struct dynamic_prop prop; | |
1c379e20 | 25080 | |
b4ba55a1 JB |
25081 | /* For Ada types, make sure that the gnat-specific data is always |
25082 | initialized (if not already set). There are a few types where | |
25083 | we should not be doing so, because the type-specific area is | |
25084 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
25085 | where the type-specific area is used to store the floatformat). | |
25086 | But this is not a problem, because the gnat-specific information | |
25087 | is actually not needed for these types. */ | |
25088 | if (need_gnat_info (cu) | |
25089 | && TYPE_CODE (type) != TYPE_CODE_FUNC | |
25090 | && TYPE_CODE (type) != TYPE_CODE_FLT | |
09e2d7c7 DE |
25091 | && TYPE_CODE (type) != TYPE_CODE_METHODPTR |
25092 | && TYPE_CODE (type) != TYPE_CODE_MEMBERPTR | |
25093 | && TYPE_CODE (type) != TYPE_CODE_METHOD | |
b4ba55a1 JB |
25094 | && !HAVE_GNAT_AUX_INFO (type)) |
25095 | INIT_GNAT_SPECIFIC (type); | |
25096 | ||
3f2f83dd KB |
25097 | /* Read DW_AT_allocated and set in type. */ |
25098 | attr = dwarf2_attr (die, DW_AT_allocated, cu); | |
25099 | if (attr_form_is_block (attr)) | |
25100 | { | |
25101 | if (attr_to_dynamic_prop (attr, die, cu, &prop)) | |
50a82047 | 25102 | add_dyn_prop (DYN_PROP_ALLOCATED, prop, type); |
3f2f83dd KB |
25103 | } |
25104 | else if (attr != NULL) | |
25105 | { | |
b98664d3 | 25106 | complaint (_("DW_AT_allocated has the wrong form (%s) at DIE %s"), |
9c541725 | 25107 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), |
9d8780f0 | 25108 | sect_offset_str (die->sect_off)); |
3f2f83dd KB |
25109 | } |
25110 | ||
25111 | /* Read DW_AT_associated and set in type. */ | |
25112 | attr = dwarf2_attr (die, DW_AT_associated, cu); | |
25113 | if (attr_form_is_block (attr)) | |
25114 | { | |
25115 | if (attr_to_dynamic_prop (attr, die, cu, &prop)) | |
50a82047 | 25116 | add_dyn_prop (DYN_PROP_ASSOCIATED, prop, type); |
3f2f83dd KB |
25117 | } |
25118 | else if (attr != NULL) | |
25119 | { | |
b98664d3 | 25120 | complaint (_("DW_AT_associated has the wrong form (%s) at DIE %s"), |
9c541725 | 25121 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), |
9d8780f0 | 25122 | sect_offset_str (die->sect_off)); |
3f2f83dd KB |
25123 | } |
25124 | ||
3cdcd0ce JB |
25125 | /* Read DW_AT_data_location and set in type. */ |
25126 | attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
25127 | if (attr_to_dynamic_prop (attr, die, cu, &prop)) | |
50a82047 | 25128 | add_dyn_prop (DYN_PROP_DATA_LOCATION, prop, type); |
3cdcd0ce | 25129 | |
dee91e82 | 25130 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 25131 | { |
dee91e82 DE |
25132 | dwarf2_per_objfile->die_type_hash = |
25133 | htab_create_alloc_ex (127, | |
25134 | per_cu_offset_and_type_hash, | |
25135 | per_cu_offset_and_type_eq, | |
25136 | NULL, | |
25137 | &objfile->objfile_obstack, | |
25138 | hashtab_obstack_allocate, | |
25139 | dummy_obstack_deallocate); | |
f792889a | 25140 | } |
1c379e20 | 25141 | |
dee91e82 | 25142 | ofs.per_cu = cu->per_cu; |
9c541725 | 25143 | ofs.sect_off = die->sect_off; |
1c379e20 | 25144 | ofs.type = type; |
dee91e82 DE |
25145 | slot = (struct dwarf2_per_cu_offset_and_type **) |
25146 | htab_find_slot (dwarf2_per_objfile->die_type_hash, &ofs, INSERT); | |
7e314c57 | 25147 | if (*slot) |
b98664d3 | 25148 | complaint (_("A problem internal to GDB: DIE %s has type already set"), |
9d8780f0 | 25149 | sect_offset_str (die->sect_off)); |
8d749320 SM |
25150 | *slot = XOBNEW (&objfile->objfile_obstack, |
25151 | struct dwarf2_per_cu_offset_and_type); | |
1c379e20 | 25152 | **slot = ofs; |
f792889a | 25153 | return type; |
1c379e20 DJ |
25154 | } |
25155 | ||
9c541725 | 25156 | /* Look up the type for the die at SECT_OFF in PER_CU in die_type_hash, |
02142a6c | 25157 | or return NULL if the die does not have a saved type. */ |
1c379e20 DJ |
25158 | |
25159 | static struct type * | |
9c541725 | 25160 | get_die_type_at_offset (sect_offset sect_off, |
673bfd45 | 25161 | struct dwarf2_per_cu_data *per_cu) |
1c379e20 | 25162 | { |
dee91e82 | 25163 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
ed2dc618 | 25164 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
f792889a | 25165 | |
dee91e82 | 25166 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 25167 | return NULL; |
1c379e20 | 25168 | |
dee91e82 | 25169 | ofs.per_cu = per_cu; |
9c541725 | 25170 | ofs.sect_off = sect_off; |
9a3c8263 SM |
25171 | slot = ((struct dwarf2_per_cu_offset_and_type *) |
25172 | htab_find (dwarf2_per_objfile->die_type_hash, &ofs)); | |
1c379e20 DJ |
25173 | if (slot) |
25174 | return slot->type; | |
25175 | else | |
25176 | return NULL; | |
25177 | } | |
25178 | ||
02142a6c | 25179 | /* Look up the type for DIE in CU in die_type_hash, |
673bfd45 DE |
25180 | or return NULL if DIE does not have a saved type. */ |
25181 | ||
25182 | static struct type * | |
25183 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
25184 | { | |
9c541725 | 25185 | return get_die_type_at_offset (die->sect_off, cu->per_cu); |
673bfd45 DE |
25186 | } |
25187 | ||
10b3939b DJ |
25188 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
25189 | ||
25190 | static void | |
25191 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
25192 | struct dwarf2_per_cu_data *ref_per_cu) | |
25193 | { | |
25194 | void **slot; | |
25195 | ||
25196 | if (cu->dependencies == NULL) | |
25197 | cu->dependencies | |
25198 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
25199 | NULL, &cu->comp_unit_obstack, | |
25200 | hashtab_obstack_allocate, | |
25201 | dummy_obstack_deallocate); | |
25202 | ||
25203 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
25204 | if (*slot == NULL) | |
25205 | *slot = ref_per_cu; | |
25206 | } | |
1c379e20 | 25207 | |
f504f079 DE |
25208 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
25209 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
25210 | cache that we must keep because we are keeping CU. */ |
25211 | ||
10b3939b DJ |
25212 | static int |
25213 | dwarf2_mark_helper (void **slot, void *data) | |
25214 | { | |
25215 | struct dwarf2_per_cu_data *per_cu; | |
25216 | ||
25217 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
d07ed419 JK |
25218 | |
25219 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
25220 | reading of the chain. As such dependencies remain valid it is not much | |
25221 | useful to track and undo them during QUIT cleanups. */ | |
25222 | if (per_cu->cu == NULL) | |
25223 | return 1; | |
25224 | ||
10b3939b DJ |
25225 | if (per_cu->cu->mark) |
25226 | return 1; | |
25227 | per_cu->cu->mark = 1; | |
25228 | ||
25229 | if (per_cu->cu->dependencies != NULL) | |
25230 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
25231 | ||
25232 | return 1; | |
25233 | } | |
25234 | ||
f504f079 DE |
25235 | /* Set the mark field in CU and in every other compilation unit in the |
25236 | cache that we must keep because we are keeping CU. */ | |
25237 | ||
ae038cb0 DJ |
25238 | static void |
25239 | dwarf2_mark (struct dwarf2_cu *cu) | |
25240 | { | |
25241 | if (cu->mark) | |
25242 | return; | |
25243 | cu->mark = 1; | |
10b3939b DJ |
25244 | if (cu->dependencies != NULL) |
25245 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
25246 | } |
25247 | ||
25248 | static void | |
25249 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
25250 | { | |
25251 | while (per_cu) | |
25252 | { | |
25253 | per_cu->cu->mark = 0; | |
25254 | per_cu = per_cu->cu->read_in_chain; | |
25255 | } | |
72bf9492 DJ |
25256 | } |
25257 | ||
72bf9492 DJ |
25258 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
25259 | is its offset in .debug_info for this objfile. */ | |
25260 | ||
25261 | static hashval_t | |
25262 | partial_die_hash (const void *item) | |
25263 | { | |
9a3c8263 SM |
25264 | const struct partial_die_info *part_die |
25265 | = (const struct partial_die_info *) item; | |
9a619af0 | 25266 | |
9c541725 | 25267 | return to_underlying (part_die->sect_off); |
72bf9492 DJ |
25268 | } |
25269 | ||
25270 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
25271 | are equal if they have the same offset. */ | |
25272 | ||
25273 | static int | |
25274 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
25275 | { | |
9a3c8263 SM |
25276 | const struct partial_die_info *part_die_lhs |
25277 | = (const struct partial_die_info *) item_lhs; | |
25278 | const struct partial_die_info *part_die_rhs | |
25279 | = (const struct partial_die_info *) item_rhs; | |
9a619af0 | 25280 | |
9c541725 | 25281 | return part_die_lhs->sect_off == part_die_rhs->sect_off; |
72bf9492 DJ |
25282 | } |
25283 | ||
b4f54984 DE |
25284 | static struct cmd_list_element *set_dwarf_cmdlist; |
25285 | static struct cmd_list_element *show_dwarf_cmdlist; | |
ae038cb0 DJ |
25286 | |
25287 | static void | |
981a3fb3 | 25288 | set_dwarf_cmd (const char *args, int from_tty) |
ae038cb0 | 25289 | { |
b4f54984 | 25290 | help_list (set_dwarf_cmdlist, "maintenance set dwarf ", all_commands, |
635c7e8a | 25291 | gdb_stdout); |
ae038cb0 DJ |
25292 | } |
25293 | ||
25294 | static void | |
981a3fb3 | 25295 | show_dwarf_cmd (const char *args, int from_tty) |
6e70227d | 25296 | { |
b4f54984 | 25297 | cmd_show_list (show_dwarf_cmdlist, from_tty, ""); |
ae038cb0 DJ |
25298 | } |
25299 | ||
cd4fb1b2 | 25300 | int dwarf_always_disassemble; |
437afbb8 | 25301 | |
437afbb8 | 25302 | static void |
cd4fb1b2 SM |
25303 | show_dwarf_always_disassemble (struct ui_file *file, int from_tty, |
25304 | struct cmd_list_element *c, const char *value) | |
9291a0cd | 25305 | { |
cd4fb1b2 SM |
25306 | fprintf_filtered (file, |
25307 | _("Whether to always disassemble " | |
25308 | "DWARF expressions is %s.\n"), | |
25309 | value); | |
9291a0cd TT |
25310 | } |
25311 | ||
9291a0cd | 25312 | static void |
cd4fb1b2 SM |
25313 | show_check_physname (struct ui_file *file, int from_tty, |
25314 | struct cmd_list_element *c, const char *value) | |
9291a0cd | 25315 | { |
cd4fb1b2 SM |
25316 | fprintf_filtered (file, |
25317 | _("Whether to check \"physname\" is %s.\n"), | |
25318 | value); | |
9291a0cd TT |
25319 | } |
25320 | ||
cd4fb1b2 SM |
25321 | void |
25322 | _initialize_dwarf2_read (void) | |
9291a0cd | 25323 | { |
d95d3aef TT |
25324 | dwarf2_objfile_data_key |
25325 | = register_objfile_data_with_cleanup (nullptr, dwarf2_free_objfile); | |
156942c7 | 25326 | |
cd4fb1b2 SM |
25327 | add_prefix_cmd ("dwarf", class_maintenance, set_dwarf_cmd, _("\ |
25328 | Set DWARF specific variables.\n\ | |
25329 | Configure DWARF variables such as the cache size"), | |
25330 | &set_dwarf_cmdlist, "maintenance set dwarf ", | |
25331 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
156942c7 | 25332 | |
cd4fb1b2 SM |
25333 | add_prefix_cmd ("dwarf", class_maintenance, show_dwarf_cmd, _("\ |
25334 | Show DWARF specific variables\n\ | |
25335 | Show DWARF variables such as the cache size"), | |
25336 | &show_dwarf_cmdlist, "maintenance show dwarf ", | |
25337 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
156942c7 | 25338 | |
cd4fb1b2 SM |
25339 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, |
25340 | &dwarf_max_cache_age, _("\ | |
25341 | Set the upper bound on the age of cached DWARF compilation units."), _("\ | |
25342 | Show the upper bound on the age of cached DWARF compilation units."), _("\ | |
25343 | A higher limit means that cached compilation units will be stored\n\ | |
25344 | in memory longer, and more total memory will be used. Zero disables\n\ | |
25345 | caching, which can slow down startup."), | |
25346 | NULL, | |
25347 | show_dwarf_max_cache_age, | |
25348 | &set_dwarf_cmdlist, | |
25349 | &show_dwarf_cmdlist); | |
156942c7 | 25350 | |
cd4fb1b2 SM |
25351 | add_setshow_boolean_cmd ("always-disassemble", class_obscure, |
25352 | &dwarf_always_disassemble, _("\ | |
25353 | Set whether `info address' always disassembles DWARF expressions."), _("\ | |
25354 | Show whether `info address' always disassembles DWARF expressions."), _("\ | |
25355 | When enabled, DWARF expressions are always printed in an assembly-like\n\ | |
25356 | syntax. When disabled, expressions will be printed in a more\n\ | |
25357 | conversational style, when possible."), | |
25358 | NULL, | |
25359 | show_dwarf_always_disassemble, | |
25360 | &set_dwarf_cmdlist, | |
25361 | &show_dwarf_cmdlist); | |
9291a0cd | 25362 | |
cd4fb1b2 SM |
25363 | add_setshow_zuinteger_cmd ("dwarf-read", no_class, &dwarf_read_debug, _("\ |
25364 | Set debugging of the DWARF reader."), _("\ | |
25365 | Show debugging of the DWARF reader."), _("\ | |
25366 | When enabled (non-zero), debugging messages are printed during DWARF\n\ | |
25367 | reading and symtab expansion. A value of 1 (one) provides basic\n\ | |
25368 | information. A value greater than 1 provides more verbose information."), | |
25369 | NULL, | |
25370 | NULL, | |
25371 | &setdebuglist, &showdebuglist); | |
9291a0cd | 25372 | |
cd4fb1b2 SM |
25373 | add_setshow_zuinteger_cmd ("dwarf-die", no_class, &dwarf_die_debug, _("\ |
25374 | Set debugging of the DWARF DIE reader."), _("\ | |
25375 | Show debugging of the DWARF DIE reader."), _("\ | |
25376 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
25377 | The value is the maximum depth to print."), | |
25378 | NULL, | |
25379 | NULL, | |
25380 | &setdebuglist, &showdebuglist); | |
9291a0cd | 25381 | |
cd4fb1b2 SM |
25382 | add_setshow_zuinteger_cmd ("dwarf-line", no_class, &dwarf_line_debug, _("\ |
25383 | Set debugging of the dwarf line reader."), _("\ | |
25384 | Show debugging of the dwarf line reader."), _("\ | |
25385 | When enabled (non-zero), line number entries are dumped as they are read in.\n\ | |
25386 | A value of 1 (one) provides basic information.\n\ | |
25387 | A value greater than 1 provides more verbose information."), | |
25388 | NULL, | |
25389 | NULL, | |
25390 | &setdebuglist, &showdebuglist); | |
437afbb8 | 25391 | |
cd4fb1b2 SM |
25392 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
25393 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
25394 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
25395 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
25396 | the demangler."), | |
25397 | NULL, show_check_physname, | |
25398 | &setdebuglist, &showdebuglist); | |
900e11f9 | 25399 | |
e615022a DE |
25400 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
25401 | no_class, &use_deprecated_index_sections, _("\ | |
25402 | Set whether to use deprecated gdb_index sections."), _("\ | |
25403 | Show whether to use deprecated gdb_index sections."), _("\ | |
25404 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
25405 | Normally they are ignored either because of a missing feature or\n\ | |
25406 | performance issue.\n\ | |
25407 | Warning: This option must be enabled before gdb reads the file."), | |
25408 | NULL, | |
25409 | NULL, | |
25410 | &setlist, &showlist); | |
25411 | ||
f1e6e072 TT |
25412 | dwarf2_locexpr_index = register_symbol_computed_impl (LOC_COMPUTED, |
25413 | &dwarf2_locexpr_funcs); | |
25414 | dwarf2_loclist_index = register_symbol_computed_impl (LOC_COMPUTED, | |
25415 | &dwarf2_loclist_funcs); | |
25416 | ||
25417 | dwarf2_locexpr_block_index = register_symbol_block_impl (LOC_BLOCK, | |
25418 | &dwarf2_block_frame_base_locexpr_funcs); | |
25419 | dwarf2_loclist_block_index = register_symbol_block_impl (LOC_BLOCK, | |
25420 | &dwarf2_block_frame_base_loclist_funcs); | |
c62446b1 PA |
25421 | |
25422 | #if GDB_SELF_TEST | |
25423 | selftests::register_test ("dw2_expand_symtabs_matching", | |
25424 | selftests::dw2_expand_symtabs_matching::run_test); | |
25425 | #endif | |
6502dd73 | 25426 | } |