Commit | Line | Data |
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c906108c | 1 | /* DWARF 2 debugging format support for GDB. |
917c78fc | 2 | |
42a4f53d | 3 | Copyright (C) 1994-2019 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 | 32 | #include "dwarf2read.h" |
87d6a7aa | 33 | #include "dwarf-index-cache.h" |
cd4fb1b2 | 34 | #include "dwarf-index-common.h" |
c906108c | 35 | #include "bfd.h" |
80626a55 | 36 | #include "elf-bfd.h" |
c906108c SS |
37 | #include "symtab.h" |
38 | #include "gdbtypes.h" | |
c906108c | 39 | #include "objfiles.h" |
fa8f86ff | 40 | #include "dwarf2.h" |
804d2729 | 41 | #include "buildsym.h" |
c906108c | 42 | #include "demangle.h" |
50f182aa | 43 | #include "gdb-demangle.h" |
c906108c | 44 | #include "expression.h" |
d5166ae1 | 45 | #include "filenames.h" /* for DOSish file names */ |
2e276125 | 46 | #include "macrotab.h" |
c906108c SS |
47 | #include "language.h" |
48 | #include "complaints.h" | |
357e46e7 | 49 | #include "bcache.h" |
4c2df51b DJ |
50 | #include "dwarf2expr.h" |
51 | #include "dwarf2loc.h" | |
9219021c | 52 | #include "cp-support.h" |
72bf9492 | 53 | #include "hashtab.h" |
ae038cb0 DJ |
54 | #include "command.h" |
55 | #include "gdbcmd.h" | |
edb3359d | 56 | #include "block.h" |
ff013f42 | 57 | #include "addrmap.h" |
94af9270 | 58 | #include "typeprint.h" |
ccefe4c4 | 59 | #include "psympriv.h" |
53ce3c39 | 60 | #include <sys/stat.h> |
96d19272 | 61 | #include "completer.h" |
34eaf542 | 62 | #include "vec.h" |
98bfdba5 | 63 | #include "c-lang.h" |
a766d390 | 64 | #include "go-lang.h" |
98bfdba5 | 65 | #include "valprint.h" |
3019eac3 | 66 | #include "gdbcore.h" /* for gnutarget */ |
156942c7 | 67 | #include "gdb/gdb-index.h" |
60d5a603 | 68 | #include <ctype.h> |
cbb099e8 | 69 | #include "gdb_bfd.h" |
4357ac6c | 70 | #include "f-lang.h" |
05cba821 | 71 | #include "source.h" |
614c279d | 72 | #include "filestuff.h" |
dc294be5 | 73 | #include "build-id.h" |
22cee43f | 74 | #include "namespace.h" |
bef155c3 | 75 | #include "common/gdb_unlinker.h" |
14bc53a8 | 76 | #include "common/function-view.h" |
ecfb656c PA |
77 | #include "common/gdb_optional.h" |
78 | #include "common/underlying.h" | |
d5722aa2 | 79 | #include "common/byte-vector.h" |
927aa2e7 | 80 | #include "common/hash_enum.h" |
bbf2f4df | 81 | #include "filename-seen-cache.h" |
b32b108a | 82 | #include "producer.h" |
c906108c | 83 | #include <fcntl.h> |
c906108c | 84 | #include <sys/types.h> |
325fac50 | 85 | #include <algorithm> |
bc8f2430 JK |
86 | #include <unordered_set> |
87 | #include <unordered_map> | |
c62446b1 | 88 | #include "selftest.h" |
437afbb8 JK |
89 | #include <cmath> |
90 | #include <set> | |
91 | #include <forward_list> | |
c9317f21 | 92 | #include "rust-lang.h" |
b4987c95 | 93 | #include "common/pathstuff.h" |
437afbb8 | 94 | |
73be47f5 DE |
95 | /* When == 1, print basic high level tracing messages. |
96 | When > 1, be more verbose. | |
b4f54984 DE |
97 | This is in contrast to the low level DIE reading of dwarf_die_debug. */ |
98 | static unsigned int dwarf_read_debug = 0; | |
45cfd468 | 99 | |
d97bc12b | 100 | /* When non-zero, dump DIEs after they are read in. */ |
b4f54984 | 101 | static unsigned int dwarf_die_debug = 0; |
d97bc12b | 102 | |
27e0867f DE |
103 | /* When non-zero, dump line number entries as they are read in. */ |
104 | static unsigned int dwarf_line_debug = 0; | |
105 | ||
900e11f9 JK |
106 | /* When non-zero, cross-check physname against demangler. */ |
107 | static int check_physname = 0; | |
108 | ||
481860b3 | 109 | /* When non-zero, do not reject deprecated .gdb_index sections. */ |
e615022a | 110 | static int use_deprecated_index_sections = 0; |
481860b3 | 111 | |
6502dd73 DJ |
112 | static const struct objfile_data *dwarf2_objfile_data_key; |
113 | ||
f1e6e072 TT |
114 | /* The "aclass" indices for various kinds of computed DWARF symbols. */ |
115 | ||
116 | static int dwarf2_locexpr_index; | |
117 | static int dwarf2_loclist_index; | |
118 | static int dwarf2_locexpr_block_index; | |
119 | static int dwarf2_loclist_block_index; | |
120 | ||
3f563c84 PA |
121 | /* An index into a (C++) symbol name component in a symbol name as |
122 | recorded in the mapped_index's symbol table. For each C++ symbol | |
123 | in the symbol table, we record one entry for the start of each | |
124 | component in the symbol in a table of name components, and then | |
125 | sort the table, in order to be able to binary search symbol names, | |
126 | ignoring leading namespaces, both completion and regular look up. | |
127 | For example, for symbol "A::B::C", we'll have an entry that points | |
128 | to "A::B::C", another that points to "B::C", and another for "C". | |
129 | Note that function symbols in GDB index have no parameter | |
130 | information, just the function/method names. You can convert a | |
131 | name_component to a "const char *" using the | |
132 | 'mapped_index::symbol_name_at(offset_type)' method. */ | |
133 | ||
134 | struct name_component | |
135 | { | |
136 | /* Offset in the symbol name where the component starts. Stored as | |
137 | a (32-bit) offset instead of a pointer to save memory and improve | |
138 | locality on 64-bit architectures. */ | |
139 | offset_type name_offset; | |
140 | ||
141 | /* The symbol's index in the symbol and constant pool tables of a | |
142 | mapped_index. */ | |
143 | offset_type idx; | |
144 | }; | |
145 | ||
44ed8f3e PA |
146 | /* Base class containing bits shared by both .gdb_index and |
147 | .debug_name indexes. */ | |
148 | ||
149 | struct mapped_index_base | |
150 | { | |
22ca247e TT |
151 | mapped_index_base () = default; |
152 | DISABLE_COPY_AND_ASSIGN (mapped_index_base); | |
153 | ||
44ed8f3e PA |
154 | /* The name_component table (a sorted vector). See name_component's |
155 | description above. */ | |
156 | std::vector<name_component> name_components; | |
157 | ||
158 | /* How NAME_COMPONENTS is sorted. */ | |
159 | enum case_sensitivity name_components_casing; | |
160 | ||
161 | /* Return the number of names in the symbol table. */ | |
162 | virtual size_t symbol_name_count () const = 0; | |
163 | ||
164 | /* Get the name of the symbol at IDX in the symbol table. */ | |
165 | virtual const char *symbol_name_at (offset_type idx) const = 0; | |
166 | ||
167 | /* Return whether the name at IDX in the symbol table should be | |
168 | ignored. */ | |
169 | virtual bool symbol_name_slot_invalid (offset_type idx) const | |
170 | { | |
171 | return false; | |
172 | } | |
173 | ||
174 | /* Build the symbol name component sorted vector, if we haven't | |
175 | yet. */ | |
176 | void build_name_components (); | |
177 | ||
178 | /* Returns the lower (inclusive) and upper (exclusive) bounds of the | |
179 | possible matches for LN_NO_PARAMS in the name component | |
180 | vector. */ | |
181 | std::pair<std::vector<name_component>::const_iterator, | |
182 | std::vector<name_component>::const_iterator> | |
183 | find_name_components_bounds (const lookup_name_info &ln_no_params) const; | |
184 | ||
185 | /* Prevent deleting/destroying via a base class pointer. */ | |
186 | protected: | |
187 | ~mapped_index_base() = default; | |
188 | }; | |
189 | ||
9291a0cd TT |
190 | /* A description of the mapped index. The file format is described in |
191 | a comment by the code that writes the index. */ | |
fc898b42 | 192 | struct mapped_index final : public mapped_index_base |
9291a0cd | 193 | { |
f00a2de2 PA |
194 | /* A slot/bucket in the symbol table hash. */ |
195 | struct symbol_table_slot | |
196 | { | |
197 | const offset_type name; | |
198 | const offset_type vec; | |
199 | }; | |
200 | ||
559a7a62 | 201 | /* Index data format version. */ |
3063847f | 202 | int version = 0; |
559a7a62 | 203 | |
f00a2de2 PA |
204 | /* The address table data. */ |
205 | gdb::array_view<const gdb_byte> address_table; | |
b11b1f88 | 206 | |
3876f04e | 207 | /* The symbol table, implemented as a hash table. */ |
f00a2de2 | 208 | gdb::array_view<symbol_table_slot> symbol_table; |
b11b1f88 | 209 | |
9291a0cd | 210 | /* A pointer to the constant pool. */ |
3063847f | 211 | const char *constant_pool = nullptr; |
3f563c84 | 212 | |
44ed8f3e PA |
213 | bool symbol_name_slot_invalid (offset_type idx) const override |
214 | { | |
215 | const auto &bucket = this->symbol_table[idx]; | |
216 | return bucket.name == 0 && bucket.vec; | |
217 | } | |
5c58de74 | 218 | |
3f563c84 PA |
219 | /* Convenience method to get at the name of the symbol at IDX in the |
220 | symbol table. */ | |
44ed8f3e | 221 | const char *symbol_name_at (offset_type idx) const override |
f00a2de2 | 222 | { return this->constant_pool + MAYBE_SWAP (this->symbol_table[idx].name); } |
5c58de74 | 223 | |
44ed8f3e PA |
224 | size_t symbol_name_count () const override |
225 | { return this->symbol_table.size (); } | |
9291a0cd TT |
226 | }; |
227 | ||
927aa2e7 JK |
228 | /* A description of the mapped .debug_names. |
229 | Uninitialized map has CU_COUNT 0. */ | |
fc898b42 | 230 | struct mapped_debug_names final : public mapped_index_base |
927aa2e7 | 231 | { |
ed2dc618 SM |
232 | mapped_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile_) |
233 | : dwarf2_per_objfile (dwarf2_per_objfile_) | |
234 | {} | |
235 | ||
236 | struct dwarf2_per_objfile *dwarf2_per_objfile; | |
927aa2e7 JK |
237 | bfd_endian dwarf5_byte_order; |
238 | bool dwarf5_is_dwarf64; | |
239 | bool augmentation_is_gdb; | |
240 | uint8_t offset_size; | |
241 | uint32_t cu_count = 0; | |
242 | uint32_t tu_count, bucket_count, name_count; | |
243 | const gdb_byte *cu_table_reordered, *tu_table_reordered; | |
244 | const uint32_t *bucket_table_reordered, *hash_table_reordered; | |
245 | const gdb_byte *name_table_string_offs_reordered; | |
246 | const gdb_byte *name_table_entry_offs_reordered; | |
247 | const gdb_byte *entry_pool; | |
248 | ||
249 | struct index_val | |
250 | { | |
251 | ULONGEST dwarf_tag; | |
252 | struct attr | |
253 | { | |
254 | /* Attribute name DW_IDX_*. */ | |
255 | ULONGEST dw_idx; | |
256 | ||
257 | /* Attribute form DW_FORM_*. */ | |
258 | ULONGEST form; | |
259 | ||
260 | /* Value if FORM is DW_FORM_implicit_const. */ | |
261 | LONGEST implicit_const; | |
262 | }; | |
263 | std::vector<attr> attr_vec; | |
264 | }; | |
265 | ||
266 | std::unordered_map<ULONGEST, index_val> abbrev_map; | |
267 | ||
268 | const char *namei_to_name (uint32_t namei) const; | |
44ed8f3e PA |
269 | |
270 | /* Implementation of the mapped_index_base virtual interface, for | |
271 | the name_components cache. */ | |
272 | ||
273 | const char *symbol_name_at (offset_type idx) const override | |
274 | { return namei_to_name (idx); } | |
275 | ||
276 | size_t symbol_name_count () const override | |
277 | { return this->name_count; } | |
927aa2e7 JK |
278 | }; |
279 | ||
cd4fb1b2 | 280 | /* See dwarf2read.h. */ |
ed2dc618 | 281 | |
cd4fb1b2 | 282 | dwarf2_per_objfile * |
ed2dc618 SM |
283 | get_dwarf2_per_objfile (struct objfile *objfile) |
284 | { | |
285 | return ((struct dwarf2_per_objfile *) | |
286 | objfile_data (objfile, dwarf2_objfile_data_key)); | |
287 | } | |
288 | ||
289 | /* Set the dwarf2_per_objfile associated to OBJFILE. */ | |
290 | ||
291 | void | |
292 | set_dwarf2_per_objfile (struct objfile *objfile, | |
293 | struct dwarf2_per_objfile *dwarf2_per_objfile) | |
294 | { | |
295 | gdb_assert (get_dwarf2_per_objfile (objfile) == NULL); | |
296 | set_objfile_data (objfile, dwarf2_objfile_data_key, dwarf2_per_objfile); | |
297 | } | |
c906108c | 298 | |
251d32d9 | 299 | /* Default names of the debugging sections. */ |
c906108c | 300 | |
233a11ab CS |
301 | /* Note that if the debugging section has been compressed, it might |
302 | have a name like .zdebug_info. */ | |
303 | ||
9cdd5dbd DE |
304 | static const struct dwarf2_debug_sections dwarf2_elf_names = |
305 | { | |
251d32d9 TG |
306 | { ".debug_info", ".zdebug_info" }, |
307 | { ".debug_abbrev", ".zdebug_abbrev" }, | |
308 | { ".debug_line", ".zdebug_line" }, | |
309 | { ".debug_loc", ".zdebug_loc" }, | |
43988095 | 310 | { ".debug_loclists", ".zdebug_loclists" }, |
251d32d9 | 311 | { ".debug_macinfo", ".zdebug_macinfo" }, |
cf2c3c16 | 312 | { ".debug_macro", ".zdebug_macro" }, |
251d32d9 | 313 | { ".debug_str", ".zdebug_str" }, |
43988095 | 314 | { ".debug_line_str", ".zdebug_line_str" }, |
251d32d9 | 315 | { ".debug_ranges", ".zdebug_ranges" }, |
43988095 | 316 | { ".debug_rnglists", ".zdebug_rnglists" }, |
251d32d9 | 317 | { ".debug_types", ".zdebug_types" }, |
3019eac3 | 318 | { ".debug_addr", ".zdebug_addr" }, |
251d32d9 TG |
319 | { ".debug_frame", ".zdebug_frame" }, |
320 | { ".eh_frame", NULL }, | |
24d3216f | 321 | { ".gdb_index", ".zgdb_index" }, |
927aa2e7 JK |
322 | { ".debug_names", ".zdebug_names" }, |
323 | { ".debug_aranges", ".zdebug_aranges" }, | |
24d3216f | 324 | 23 |
251d32d9 | 325 | }; |
c906108c | 326 | |
80626a55 | 327 | /* List of DWO/DWP sections. */ |
3019eac3 | 328 | |
80626a55 | 329 | static const struct dwop_section_names |
3019eac3 DE |
330 | { |
331 | struct dwarf2_section_names abbrev_dwo; | |
332 | struct dwarf2_section_names info_dwo; | |
333 | struct dwarf2_section_names line_dwo; | |
334 | struct dwarf2_section_names loc_dwo; | |
43988095 | 335 | struct dwarf2_section_names loclists_dwo; |
09262596 DE |
336 | struct dwarf2_section_names macinfo_dwo; |
337 | struct dwarf2_section_names macro_dwo; | |
3019eac3 DE |
338 | struct dwarf2_section_names str_dwo; |
339 | struct dwarf2_section_names str_offsets_dwo; | |
340 | struct dwarf2_section_names types_dwo; | |
80626a55 DE |
341 | struct dwarf2_section_names cu_index; |
342 | struct dwarf2_section_names tu_index; | |
3019eac3 | 343 | } |
80626a55 | 344 | dwop_section_names = |
3019eac3 DE |
345 | { |
346 | { ".debug_abbrev.dwo", ".zdebug_abbrev.dwo" }, | |
347 | { ".debug_info.dwo", ".zdebug_info.dwo" }, | |
348 | { ".debug_line.dwo", ".zdebug_line.dwo" }, | |
349 | { ".debug_loc.dwo", ".zdebug_loc.dwo" }, | |
43988095 | 350 | { ".debug_loclists.dwo", ".zdebug_loclists.dwo" }, |
09262596 DE |
351 | { ".debug_macinfo.dwo", ".zdebug_macinfo.dwo" }, |
352 | { ".debug_macro.dwo", ".zdebug_macro.dwo" }, | |
3019eac3 DE |
353 | { ".debug_str.dwo", ".zdebug_str.dwo" }, |
354 | { ".debug_str_offsets.dwo", ".zdebug_str_offsets.dwo" }, | |
355 | { ".debug_types.dwo", ".zdebug_types.dwo" }, | |
80626a55 DE |
356 | { ".debug_cu_index", ".zdebug_cu_index" }, |
357 | { ".debug_tu_index", ".zdebug_tu_index" }, | |
3019eac3 DE |
358 | }; |
359 | ||
c906108c SS |
360 | /* local data types */ |
361 | ||
107d2387 AC |
362 | /* The data in a compilation unit header, after target2host |
363 | translation, looks like this. */ | |
c906108c | 364 | struct comp_unit_head |
a738430d | 365 | { |
c764a876 | 366 | unsigned int length; |
a738430d | 367 | short version; |
a738430d MK |
368 | unsigned char addr_size; |
369 | unsigned char signed_addr_p; | |
9c541725 | 370 | sect_offset abbrev_sect_off; |
57349743 | 371 | |
a738430d MK |
372 | /* Size of file offsets; either 4 or 8. */ |
373 | unsigned int offset_size; | |
57349743 | 374 | |
a738430d MK |
375 | /* Size of the length field; either 4 or 12. */ |
376 | unsigned int initial_length_size; | |
57349743 | 377 | |
43988095 JK |
378 | enum dwarf_unit_type unit_type; |
379 | ||
a738430d MK |
380 | /* Offset to the first byte of this compilation unit header in the |
381 | .debug_info section, for resolving relative reference dies. */ | |
9c541725 | 382 | sect_offset sect_off; |
57349743 | 383 | |
d00adf39 DE |
384 | /* Offset to first die in this cu from the start of the cu. |
385 | This will be the first byte following the compilation unit header. */ | |
9c541725 | 386 | cu_offset first_die_cu_offset; |
43988095 JK |
387 | |
388 | /* 64-bit signature of this type unit - it is valid only for | |
389 | UNIT_TYPE DW_UT_type. */ | |
390 | ULONGEST signature; | |
391 | ||
392 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
9c541725 | 393 | cu_offset type_cu_offset_in_tu; |
a738430d | 394 | }; |
c906108c | 395 | |
3da10d80 KS |
396 | /* Type used for delaying computation of method physnames. |
397 | See comments for compute_delayed_physnames. */ | |
398 | struct delayed_method_info | |
399 | { | |
400 | /* The type to which the method is attached, i.e., its parent class. */ | |
401 | struct type *type; | |
402 | ||
403 | /* The index of the method in the type's function fieldlists. */ | |
404 | int fnfield_index; | |
405 | ||
406 | /* The index of the method in the fieldlist. */ | |
407 | int index; | |
408 | ||
409 | /* The name of the DIE. */ | |
410 | const char *name; | |
411 | ||
412 | /* The DIE associated with this method. */ | |
413 | struct die_info *die; | |
414 | }; | |
415 | ||
e7c27a73 DJ |
416 | /* Internal state when decoding a particular compilation unit. */ |
417 | struct dwarf2_cu | |
418 | { | |
fcd3b13d SM |
419 | explicit dwarf2_cu (struct dwarf2_per_cu_data *per_cu); |
420 | ~dwarf2_cu (); | |
421 | ||
422 | DISABLE_COPY_AND_ASSIGN (dwarf2_cu); | |
423 | ||
d00adf39 | 424 | /* The header of the compilation unit. */ |
fcd3b13d | 425 | struct comp_unit_head header {}; |
e142c38c | 426 | |
d00adf39 | 427 | /* Base address of this compilation unit. */ |
fcd3b13d | 428 | CORE_ADDR base_address = 0; |
d00adf39 DE |
429 | |
430 | /* Non-zero if base_address has been set. */ | |
fcd3b13d | 431 | int base_known = 0; |
d00adf39 | 432 | |
e142c38c | 433 | /* The language we are debugging. */ |
fcd3b13d SM |
434 | enum language language = language_unknown; |
435 | const struct language_defn *language_defn = nullptr; | |
e142c38c | 436 | |
fcd3b13d | 437 | const char *producer = nullptr; |
b0f35d58 | 438 | |
804d2729 TT |
439 | /* The symtab builder for this CU. This is only non-NULL when full |
440 | symbols are being read. */ | |
441 | std::unique_ptr<buildsym_compunit> builder; | |
442 | ||
e142c38c DJ |
443 | /* The generic symbol table building routines have separate lists for |
444 | file scope symbols and all all other scopes (local scopes). So | |
445 | we need to select the right one to pass to add_symbol_to_list(). | |
446 | We do it by keeping a pointer to the correct list in list_in_scope. | |
447 | ||
448 | FIXME: The original dwarf code just treated the file scope as the | |
449 | first local scope, and all other local scopes as nested local | |
450 | scopes, and worked fine. Check to see if we really need to | |
451 | distinguish these in buildsym.c. */ | |
fcd3b13d | 452 | struct pending **list_in_scope = nullptr; |
e142c38c | 453 | |
b64f50a1 JK |
454 | /* Hash table holding all the loaded partial DIEs |
455 | with partial_die->offset.SECT_OFF as hash. */ | |
fcd3b13d | 456 | htab_t partial_dies = nullptr; |
72bf9492 DJ |
457 | |
458 | /* Storage for things with the same lifetime as this read-in compilation | |
459 | unit, including partial DIEs. */ | |
fcd3b13d | 460 | auto_obstack comp_unit_obstack; |
72bf9492 | 461 | |
ae038cb0 DJ |
462 | /* When multiple dwarf2_cu structures are living in memory, this field |
463 | chains them all together, so that they can be released efficiently. | |
464 | We will probably also want a generation counter so that most-recently-used | |
465 | compilation units are cached... */ | |
fcd3b13d | 466 | struct dwarf2_per_cu_data *read_in_chain = nullptr; |
ae038cb0 | 467 | |
69d751e3 | 468 | /* Backlink to our per_cu entry. */ |
ae038cb0 DJ |
469 | struct dwarf2_per_cu_data *per_cu; |
470 | ||
471 | /* How many compilation units ago was this CU last referenced? */ | |
fcd3b13d | 472 | int last_used = 0; |
ae038cb0 | 473 | |
b64f50a1 JK |
474 | /* A hash table of DIE cu_offset for following references with |
475 | die_info->offset.sect_off as hash. */ | |
fcd3b13d | 476 | htab_t die_hash = nullptr; |
10b3939b DJ |
477 | |
478 | /* Full DIEs if read in. */ | |
fcd3b13d | 479 | struct die_info *dies = nullptr; |
10b3939b DJ |
480 | |
481 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
482 | units referenced by this one. Only set during full symbol processing; | |
483 | partial symbol tables do not have dependencies. */ | |
fcd3b13d | 484 | htab_t dependencies = nullptr; |
10b3939b | 485 | |
cb1df416 | 486 | /* Header data from the line table, during full symbol processing. */ |
fcd3b13d | 487 | struct line_header *line_header = nullptr; |
4c8aa72d PA |
488 | /* Non-NULL if LINE_HEADER is owned by this DWARF_CU. Otherwise, |
489 | it's owned by dwarf2_per_objfile::line_header_hash. If non-NULL, | |
490 | this is the DW_TAG_compile_unit die for this CU. We'll hold on | |
491 | to the line header as long as this DIE is being processed. See | |
492 | process_die_scope. */ | |
fcd3b13d | 493 | die_info *line_header_die_owner = nullptr; |
cb1df416 | 494 | |
3da10d80 KS |
495 | /* A list of methods which need to have physnames computed |
496 | after all type information has been read. */ | |
c89b44cd | 497 | std::vector<delayed_method_info> method_list; |
3da10d80 | 498 | |
96408a79 | 499 | /* To be copied to symtab->call_site_htab. */ |
fcd3b13d | 500 | htab_t call_site_htab = nullptr; |
96408a79 | 501 | |
034e5797 DE |
502 | /* Non-NULL if this CU came from a DWO file. |
503 | There is an invariant here that is important to remember: | |
504 | Except for attributes copied from the top level DIE in the "main" | |
505 | (or "stub") file in preparation for reading the DWO file | |
506 | (e.g., DW_AT_GNU_addr_base), we KISS: there is only *one* CU. | |
507 | Either there isn't a DWO file (in which case this is NULL and the point | |
508 | is moot), or there is and either we're not going to read it (in which | |
509 | case this is NULL) or there is and we are reading it (in which case this | |
510 | is non-NULL). */ | |
fcd3b13d | 511 | struct dwo_unit *dwo_unit = nullptr; |
3019eac3 DE |
512 | |
513 | /* The DW_AT_addr_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. */ |
fcd3b13d | 516 | ULONGEST addr_base = 0; |
3019eac3 | 517 | |
2e3cf129 DE |
518 | /* The DW_AT_ranges_base attribute if present, zero otherwise |
519 | (zero is a valid value though). | |
1dbab08b | 520 | Note this value comes from the Fission stub CU/TU's DIE. |
2e3cf129 | 521 | Also note that the value is zero in the non-DWO case so this value can |
ab435259 DE |
522 | be used without needing to know whether DWO files are in use or not. |
523 | N.B. This does not apply to DW_AT_ranges appearing in | |
524 | DW_TAG_compile_unit dies. This is a bit of a wart, consider if ever | |
525 | DW_AT_ranges appeared in the DW_TAG_compile_unit of DWO DIEs: then | |
526 | DW_AT_ranges_base *would* have to be applied, and we'd have to care | |
527 | whether the DW_AT_ranges attribute came from the skeleton or DWO. */ | |
fcd3b13d | 528 | ULONGEST ranges_base = 0; |
2e3cf129 | 529 | |
c9317f21 TT |
530 | /* When reading debug info generated by older versions of rustc, we |
531 | have to rewrite some union types to be struct types with a | |
532 | variant part. This rewriting must be done after the CU is fully | |
533 | read in, because otherwise at the point of rewriting some struct | |
534 | type might not have been fully processed. So, we keep a list of | |
535 | all such types here and process them after expansion. */ | |
536 | std::vector<struct type *> rust_unions; | |
537 | ||
ae038cb0 | 538 | /* Mark used when releasing cached dies. */ |
9068261f | 539 | bool mark : 1; |
ae038cb0 | 540 | |
8be455d7 JK |
541 | /* This CU references .debug_loc. See the symtab->locations_valid field. |
542 | This test is imperfect as there may exist optimized debug code not using | |
543 | any location list and still facing inlining issues if handled as | |
544 | unoptimized code. For a future better test see GCC PR other/32998. */ | |
9068261f | 545 | bool has_loclist : 1; |
ba919b58 | 546 | |
9068261f | 547 | /* These cache the results for producer_is_* fields. CHECKED_PRODUCER is true |
1b80a9fa JK |
548 | if all the producer_is_* fields are valid. This information is cached |
549 | because profiling CU expansion showed excessive time spent in | |
550 | producer_is_gxx_lt_4_6. */ | |
9068261f AB |
551 | bool checked_producer : 1; |
552 | bool producer_is_gxx_lt_4_6 : 1; | |
553 | bool producer_is_gcc_lt_4_3 : 1; | |
eb77c9df | 554 | bool producer_is_icc : 1; |
9068261f | 555 | bool producer_is_icc_lt_14 : 1; |
c258c396 | 556 | bool producer_is_codewarrior : 1; |
4d4ec4e5 | 557 | |
9068261f | 558 | /* When true, the file that we're processing is known to have |
4d4ec4e5 TT |
559 | debugging info for C++ namespaces. GCC 3.3.x did not produce |
560 | this information, but later versions do. */ | |
561 | ||
9068261f | 562 | bool processing_has_namespace_info : 1; |
d590ff25 YQ |
563 | |
564 | struct partial_die_info *find_partial_die (sect_offset sect_off); | |
e7c27a73 DJ |
565 | }; |
566 | ||
094b34ac DE |
567 | /* A struct that can be used as a hash key for tables based on DW_AT_stmt_list. |
568 | This includes type_unit_group and quick_file_names. */ | |
569 | ||
570 | struct stmt_list_hash | |
571 | { | |
572 | /* The DWO unit this table is from or NULL if there is none. */ | |
573 | struct dwo_unit *dwo_unit; | |
574 | ||
575 | /* Offset in .debug_line or .debug_line.dwo. */ | |
9c541725 | 576 | sect_offset line_sect_off; |
094b34ac DE |
577 | }; |
578 | ||
f4dc4d17 DE |
579 | /* Each element of dwarf2_per_objfile->type_unit_groups is a pointer to |
580 | an object of this type. */ | |
581 | ||
582 | struct type_unit_group | |
583 | { | |
0186c6a7 | 584 | /* dwarf2read.c's main "handle" on a TU symtab. |
f4dc4d17 DE |
585 | To simplify things we create an artificial CU that "includes" all the |
586 | type units using this stmt_list so that the rest of the code still has | |
587 | a "per_cu" handle on the symtab. | |
588 | This PER_CU is recognized by having no section. */ | |
8a0459fd | 589 | #define IS_TYPE_UNIT_GROUP(per_cu) ((per_cu)->section == NULL) |
094b34ac DE |
590 | struct dwarf2_per_cu_data per_cu; |
591 | ||
0186c6a7 DE |
592 | /* The TUs that share this DW_AT_stmt_list entry. |
593 | This is added to while parsing type units to build partial symtabs, | |
594 | and is deleted afterwards and not used again. */ | |
595 | VEC (sig_type_ptr) *tus; | |
f4dc4d17 | 596 | |
43f3e411 | 597 | /* The compunit symtab. |
094b34ac | 598 | Type units in a group needn't all be defined in the same source file, |
43f3e411 DE |
599 | so we create an essentially anonymous symtab as the compunit symtab. */ |
600 | struct compunit_symtab *compunit_symtab; | |
f4dc4d17 | 601 | |
094b34ac DE |
602 | /* The data used to construct the hash key. */ |
603 | struct stmt_list_hash hash; | |
f4dc4d17 DE |
604 | |
605 | /* The number of symtabs from the line header. | |
606 | The value here must match line_header.num_file_names. */ | |
607 | unsigned int num_symtabs; | |
608 | ||
609 | /* The symbol tables for this TU (obtained from the files listed in | |
610 | DW_AT_stmt_list). | |
611 | WARNING: The order of entries here must match the order of entries | |
612 | in the line header. After the first TU using this type_unit_group, the | |
613 | line header for the subsequent TUs is recreated from this. This is done | |
614 | because we need to use the same symtabs for each TU using the same | |
615 | DW_AT_stmt_list value. Also note that symtabs may be repeated here, | |
616 | there's no guarantee the line header doesn't have duplicate entries. */ | |
617 | struct symtab **symtabs; | |
618 | }; | |
619 | ||
73869dc2 | 620 | /* These sections are what may appear in a (real or virtual) DWO file. */ |
3019eac3 DE |
621 | |
622 | struct dwo_sections | |
623 | { | |
624 | struct dwarf2_section_info abbrev; | |
3019eac3 DE |
625 | struct dwarf2_section_info line; |
626 | struct dwarf2_section_info loc; | |
43988095 | 627 | struct dwarf2_section_info loclists; |
09262596 DE |
628 | struct dwarf2_section_info macinfo; |
629 | struct dwarf2_section_info macro; | |
3019eac3 DE |
630 | struct dwarf2_section_info str; |
631 | struct dwarf2_section_info str_offsets; | |
80626a55 DE |
632 | /* In the case of a virtual DWO file, these two are unused. */ |
633 | struct dwarf2_section_info info; | |
3019eac3 DE |
634 | VEC (dwarf2_section_info_def) *types; |
635 | }; | |
636 | ||
c88ee1f0 | 637 | /* CUs/TUs in DWP/DWO files. */ |
3019eac3 DE |
638 | |
639 | struct dwo_unit | |
640 | { | |
641 | /* Backlink to the containing struct dwo_file. */ | |
642 | struct dwo_file *dwo_file; | |
643 | ||
644 | /* The "id" that distinguishes this CU/TU. | |
645 | .debug_info calls this "dwo_id", .debug_types calls this "signature". | |
646 | Since signatures came first, we stick with it for consistency. */ | |
647 | ULONGEST signature; | |
648 | ||
649 | /* The section this CU/TU lives in, in the DWO file. */ | |
8a0459fd | 650 | struct dwarf2_section_info *section; |
3019eac3 | 651 | |
9c541725 PA |
652 | /* Same as dwarf2_per_cu_data:{sect_off,length} but in the DWO section. */ |
653 | sect_offset sect_off; | |
3019eac3 DE |
654 | unsigned int length; |
655 | ||
656 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
657 | cu_offset type_offset_in_tu; | |
658 | }; | |
659 | ||
73869dc2 DE |
660 | /* include/dwarf2.h defines the DWP section codes. |
661 | It defines a max value but it doesn't define a min value, which we | |
662 | use for error checking, so provide one. */ | |
663 | ||
664 | enum dwp_v2_section_ids | |
665 | { | |
666 | DW_SECT_MIN = 1 | |
667 | }; | |
668 | ||
80626a55 | 669 | /* Data for one DWO file. |
57d63ce2 DE |
670 | |
671 | This includes virtual DWO files (a virtual DWO file is a DWO file as it | |
672 | appears in a DWP file). DWP files don't really have DWO files per se - | |
673 | comdat folding of types "loses" the DWO file they came from, and from | |
674 | a high level view DWP files appear to contain a mass of random types. | |
675 | However, to maintain consistency with the non-DWP case we pretend DWP | |
676 | files contain virtual DWO files, and we assign each TU with one virtual | |
677 | DWO file (generally based on the line and abbrev section offsets - | |
678 | a heuristic that seems to work in practice). */ | |
3019eac3 DE |
679 | |
680 | struct dwo_file | |
681 | { | |
0ac5b59e | 682 | /* The DW_AT_GNU_dwo_name attribute. |
80626a55 DE |
683 | For virtual DWO files the name is constructed from the section offsets |
684 | of abbrev,line,loc,str_offsets so that we combine virtual DWO files | |
685 | from related CU+TUs. */ | |
0ac5b59e DE |
686 | const char *dwo_name; |
687 | ||
688 | /* The DW_AT_comp_dir attribute. */ | |
689 | const char *comp_dir; | |
3019eac3 | 690 | |
80626a55 DE |
691 | /* The bfd, when the file is open. Otherwise this is NULL. |
692 | This is unused(NULL) for virtual DWO files where we use dwp_file.dbfd. */ | |
693 | bfd *dbfd; | |
3019eac3 | 694 | |
73869dc2 DE |
695 | /* The sections that make up this DWO file. |
696 | Remember that for virtual DWO files in DWP V2, these are virtual | |
697 | sections (for lack of a better name). */ | |
3019eac3 DE |
698 | struct dwo_sections sections; |
699 | ||
33c5cd75 DB |
700 | /* The CUs in the file. |
701 | Each element is a struct dwo_unit. Multiple CUs per DWO are supported as | |
702 | an extension to handle LLVM's Link Time Optimization output (where | |
703 | multiple source files may be compiled into a single object/dwo pair). */ | |
704 | htab_t cus; | |
3019eac3 DE |
705 | |
706 | /* Table of TUs in the file. | |
707 | Each element is a struct dwo_unit. */ | |
708 | htab_t tus; | |
709 | }; | |
710 | ||
80626a55 DE |
711 | /* These sections are what may appear in a DWP file. */ |
712 | ||
713 | struct dwp_sections | |
714 | { | |
73869dc2 | 715 | /* These are used by both DWP version 1 and 2. */ |
80626a55 DE |
716 | struct dwarf2_section_info str; |
717 | struct dwarf2_section_info cu_index; | |
718 | struct dwarf2_section_info tu_index; | |
73869dc2 DE |
719 | |
720 | /* These are only used by DWP version 2 files. | |
721 | In DWP version 1 the .debug_info.dwo, .debug_types.dwo, and other | |
722 | sections are referenced by section number, and are not recorded here. | |
723 | In DWP version 2 there is at most one copy of all these sections, each | |
724 | section being (effectively) comprised of the concatenation of all of the | |
725 | individual sections that exist in the version 1 format. | |
726 | To keep the code simple we treat each of these concatenated pieces as a | |
727 | section itself (a virtual section?). */ | |
728 | struct dwarf2_section_info abbrev; | |
729 | struct dwarf2_section_info info; | |
730 | struct dwarf2_section_info line; | |
731 | struct dwarf2_section_info loc; | |
732 | struct dwarf2_section_info macinfo; | |
733 | struct dwarf2_section_info macro; | |
734 | struct dwarf2_section_info str_offsets; | |
735 | struct dwarf2_section_info types; | |
80626a55 DE |
736 | }; |
737 | ||
73869dc2 DE |
738 | /* These sections are what may appear in a virtual DWO file in DWP version 1. |
739 | A virtual DWO file is a DWO file as it appears in a DWP file. */ | |
80626a55 | 740 | |
73869dc2 | 741 | struct virtual_v1_dwo_sections |
80626a55 DE |
742 | { |
743 | struct dwarf2_section_info abbrev; | |
744 | struct dwarf2_section_info line; | |
745 | struct dwarf2_section_info loc; | |
746 | struct dwarf2_section_info macinfo; | |
747 | struct dwarf2_section_info macro; | |
748 | struct dwarf2_section_info str_offsets; | |
749 | /* Each DWP hash table entry records one CU or one TU. | |
8a0459fd | 750 | That is recorded here, and copied to dwo_unit.section. */ |
80626a55 DE |
751 | struct dwarf2_section_info info_or_types; |
752 | }; | |
753 | ||
73869dc2 DE |
754 | /* Similar to virtual_v1_dwo_sections, but for DWP version 2. |
755 | In version 2, the sections of the DWO files are concatenated together | |
756 | and stored in one section of that name. Thus each ELF section contains | |
757 | several "virtual" sections. */ | |
758 | ||
759 | struct virtual_v2_dwo_sections | |
760 | { | |
761 | bfd_size_type abbrev_offset; | |
762 | bfd_size_type abbrev_size; | |
763 | ||
764 | bfd_size_type line_offset; | |
765 | bfd_size_type line_size; | |
766 | ||
767 | bfd_size_type loc_offset; | |
768 | bfd_size_type loc_size; | |
769 | ||
770 | bfd_size_type macinfo_offset; | |
771 | bfd_size_type macinfo_size; | |
772 | ||
773 | bfd_size_type macro_offset; | |
774 | bfd_size_type macro_size; | |
775 | ||
776 | bfd_size_type str_offsets_offset; | |
777 | bfd_size_type str_offsets_size; | |
778 | ||
779 | /* Each DWP hash table entry records one CU or one TU. | |
780 | That is recorded here, and copied to dwo_unit.section. */ | |
781 | bfd_size_type info_or_types_offset; | |
782 | bfd_size_type info_or_types_size; | |
783 | }; | |
784 | ||
80626a55 DE |
785 | /* Contents of DWP hash tables. */ |
786 | ||
787 | struct dwp_hash_table | |
788 | { | |
73869dc2 | 789 | uint32_t version, nr_columns; |
80626a55 | 790 | uint32_t nr_units, nr_slots; |
73869dc2 DE |
791 | const gdb_byte *hash_table, *unit_table; |
792 | union | |
793 | { | |
794 | struct | |
795 | { | |
796 | const gdb_byte *indices; | |
797 | } v1; | |
798 | struct | |
799 | { | |
800 | /* This is indexed by column number and gives the id of the section | |
801 | in that column. */ | |
802 | #define MAX_NR_V2_DWO_SECTIONS \ | |
803 | (1 /* .debug_info or .debug_types */ \ | |
804 | + 1 /* .debug_abbrev */ \ | |
805 | + 1 /* .debug_line */ \ | |
806 | + 1 /* .debug_loc */ \ | |
807 | + 1 /* .debug_str_offsets */ \ | |
808 | + 1 /* .debug_macro or .debug_macinfo */) | |
809 | int section_ids[MAX_NR_V2_DWO_SECTIONS]; | |
810 | const gdb_byte *offsets; | |
811 | const gdb_byte *sizes; | |
812 | } v2; | |
813 | } section_pool; | |
80626a55 DE |
814 | }; |
815 | ||
816 | /* Data for one DWP file. */ | |
817 | ||
818 | struct dwp_file | |
819 | { | |
400174b1 TT |
820 | dwp_file (const char *name_, gdb_bfd_ref_ptr &&abfd) |
821 | : name (name_), | |
822 | dbfd (std::move (abfd)) | |
823 | { | |
824 | } | |
825 | ||
80626a55 DE |
826 | /* Name of the file. */ |
827 | const char *name; | |
828 | ||
73869dc2 | 829 | /* File format version. */ |
400174b1 | 830 | int version = 0; |
73869dc2 | 831 | |
93417882 | 832 | /* The bfd. */ |
400174b1 | 833 | gdb_bfd_ref_ptr dbfd; |
80626a55 DE |
834 | |
835 | /* Section info for this file. */ | |
400174b1 | 836 | struct dwp_sections sections {}; |
80626a55 | 837 | |
57d63ce2 | 838 | /* Table of CUs in the file. */ |
400174b1 | 839 | const struct dwp_hash_table *cus = nullptr; |
80626a55 DE |
840 | |
841 | /* Table of TUs in the file. */ | |
400174b1 | 842 | const struct dwp_hash_table *tus = nullptr; |
80626a55 | 843 | |
19ac8c2e | 844 | /* Tables of loaded CUs/TUs. Each entry is a struct dwo_unit *. */ |
400174b1 TT |
845 | htab_t loaded_cus {}; |
846 | htab_t loaded_tus {}; | |
80626a55 | 847 | |
73869dc2 DE |
848 | /* Table to map ELF section numbers to their sections. |
849 | This is only needed for the DWP V1 file format. */ | |
400174b1 TT |
850 | unsigned int num_sections = 0; |
851 | asection **elf_sections = nullptr; | |
80626a55 DE |
852 | }; |
853 | ||
36586728 TT |
854 | /* This represents a '.dwz' file. */ |
855 | ||
856 | struct dwz_file | |
857 | { | |
7ff8cb8c TT |
858 | dwz_file (gdb_bfd_ref_ptr &&bfd) |
859 | : dwz_bfd (std::move (bfd)) | |
860 | { | |
861 | } | |
862 | ||
36586728 | 863 | /* A dwz file can only contain a few sections. */ |
7ff8cb8c TT |
864 | struct dwarf2_section_info abbrev {}; |
865 | struct dwarf2_section_info info {}; | |
866 | struct dwarf2_section_info str {}; | |
867 | struct dwarf2_section_info line {}; | |
868 | struct dwarf2_section_info macro {}; | |
869 | struct dwarf2_section_info gdb_index {}; | |
870 | struct dwarf2_section_info debug_names {}; | |
36586728 TT |
871 | |
872 | /* The dwz's BFD. */ | |
7ff8cb8c | 873 | gdb_bfd_ref_ptr dwz_bfd; |
87d6a7aa SM |
874 | |
875 | /* If we loaded the index from an external file, this contains the | |
876 | resources associated to the open file, memory mapping, etc. */ | |
877 | std::unique_ptr<index_cache_resource> index_cache_res; | |
36586728 TT |
878 | }; |
879 | ||
0963b4bd MS |
880 | /* Struct used to pass misc. parameters to read_die_and_children, et |
881 | al. which are used for both .debug_info and .debug_types dies. | |
882 | All parameters here are unchanging for the life of the call. This | |
dee91e82 | 883 | struct exists to abstract away the constant parameters of die reading. */ |
93311388 DE |
884 | |
885 | struct die_reader_specs | |
886 | { | |
a32a8923 | 887 | /* The bfd of die_section. */ |
93311388 DE |
888 | bfd* abfd; |
889 | ||
890 | /* The CU of the DIE we are parsing. */ | |
891 | struct dwarf2_cu *cu; | |
892 | ||
80626a55 | 893 | /* Non-NULL if reading a DWO file (including one packaged into a DWP). */ |
3019eac3 DE |
894 | struct dwo_file *dwo_file; |
895 | ||
dee91e82 | 896 | /* The section the die comes from. |
3019eac3 | 897 | This is either .debug_info or .debug_types, or the .dwo variants. */ |
dee91e82 DE |
898 | struct dwarf2_section_info *die_section; |
899 | ||
900 | /* die_section->buffer. */ | |
d521ce57 | 901 | const gdb_byte *buffer; |
f664829e DE |
902 | |
903 | /* The end of the buffer. */ | |
904 | const gdb_byte *buffer_end; | |
a2ce51a0 DE |
905 | |
906 | /* The value of the DW_AT_comp_dir attribute. */ | |
907 | const char *comp_dir; | |
685af9cd TT |
908 | |
909 | /* The abbreviation table to use when reading the DIEs. */ | |
910 | struct abbrev_table *abbrev_table; | |
93311388 DE |
911 | }; |
912 | ||
fd820528 | 913 | /* Type of function passed to init_cutu_and_read_dies, et.al. */ |
dee91e82 | 914 | typedef void (die_reader_func_ftype) (const struct die_reader_specs *reader, |
d521ce57 | 915 | const gdb_byte *info_ptr, |
dee91e82 DE |
916 | struct die_info *comp_unit_die, |
917 | int has_children, | |
918 | void *data); | |
919 | ||
ecfb656c PA |
920 | /* A 1-based directory index. This is a strong typedef to prevent |
921 | accidentally using a directory index as a 0-based index into an | |
922 | array/vector. */ | |
923 | enum class dir_index : unsigned int {}; | |
924 | ||
925 | /* Likewise, a 1-based file name index. */ | |
926 | enum class file_name_index : unsigned int {}; | |
927 | ||
52059ffd TT |
928 | struct file_entry |
929 | { | |
fff8551c PA |
930 | file_entry () = default; |
931 | ||
ecfb656c | 932 | file_entry (const char *name_, dir_index d_index_, |
fff8551c PA |
933 | unsigned int mod_time_, unsigned int length_) |
934 | : name (name_), | |
ecfb656c | 935 | d_index (d_index_), |
fff8551c PA |
936 | mod_time (mod_time_), |
937 | length (length_) | |
938 | {} | |
939 | ||
ecfb656c PA |
940 | /* Return the include directory at D_INDEX stored in LH. Returns |
941 | NULL if D_INDEX is out of bounds. */ | |
8c43009f PA |
942 | const char *include_dir (const line_header *lh) const; |
943 | ||
fff8551c PA |
944 | /* The file name. Note this is an observing pointer. The memory is |
945 | owned by debug_line_buffer. */ | |
946 | const char *name {}; | |
947 | ||
8c43009f | 948 | /* The directory index (1-based). */ |
ecfb656c | 949 | dir_index d_index {}; |
fff8551c PA |
950 | |
951 | unsigned int mod_time {}; | |
952 | ||
953 | unsigned int length {}; | |
954 | ||
955 | /* True if referenced by the Line Number Program. */ | |
956 | bool included_p {}; | |
957 | ||
83769d0b | 958 | /* The associated symbol table, if any. */ |
fff8551c | 959 | struct symtab *symtab {}; |
52059ffd TT |
960 | }; |
961 | ||
debd256d JB |
962 | /* The line number information for a compilation unit (found in the |
963 | .debug_line section) begins with a "statement program header", | |
964 | which contains the following information. */ | |
965 | struct line_header | |
966 | { | |
fff8551c PA |
967 | line_header () |
968 | : offset_in_dwz {} | |
969 | {} | |
970 | ||
971 | /* Add an entry to the include directory table. */ | |
972 | void add_include_dir (const char *include_dir); | |
973 | ||
974 | /* Add an entry to the file name table. */ | |
ecfb656c | 975 | void add_file_name (const char *name, dir_index d_index, |
fff8551c PA |
976 | unsigned int mod_time, unsigned int length); |
977 | ||
ecfb656c | 978 | /* Return the include dir at INDEX (1-based). Returns NULL if INDEX |
8c43009f | 979 | is out of bounds. */ |
ecfb656c | 980 | const char *include_dir_at (dir_index index) const |
8c43009f | 981 | { |
ecfb656c PA |
982 | /* Convert directory index number (1-based) to vector index |
983 | (0-based). */ | |
984 | size_t vec_index = to_underlying (index) - 1; | |
985 | ||
986 | if (vec_index >= include_dirs.size ()) | |
8c43009f | 987 | return NULL; |
ecfb656c | 988 | return include_dirs[vec_index]; |
8c43009f PA |
989 | } |
990 | ||
ecfb656c | 991 | /* Return the file name at INDEX (1-based). Returns NULL if INDEX |
8c43009f | 992 | is out of bounds. */ |
ecfb656c | 993 | file_entry *file_name_at (file_name_index index) |
8c43009f | 994 | { |
ecfb656c PA |
995 | /* Convert file name index number (1-based) to vector index |
996 | (0-based). */ | |
997 | size_t vec_index = to_underlying (index) - 1; | |
998 | ||
999 | if (vec_index >= file_names.size ()) | |
fff8551c | 1000 | return NULL; |
ecfb656c | 1001 | return &file_names[vec_index]; |
fff8551c PA |
1002 | } |
1003 | ||
1004 | /* Const version of the above. */ | |
1005 | const file_entry *file_name_at (unsigned int index) const | |
1006 | { | |
1007 | if (index >= file_names.size ()) | |
8c43009f PA |
1008 | return NULL; |
1009 | return &file_names[index]; | |
1010 | } | |
1011 | ||
527f3840 | 1012 | /* Offset of line number information in .debug_line section. */ |
9c541725 | 1013 | sect_offset sect_off {}; |
527f3840 JK |
1014 | |
1015 | /* OFFSET is for struct dwz_file associated with dwarf2_per_objfile. */ | |
fff8551c PA |
1016 | unsigned offset_in_dwz : 1; /* Can't initialize bitfields in-class. */ |
1017 | ||
1018 | unsigned int total_length {}; | |
1019 | unsigned short version {}; | |
1020 | unsigned int header_length {}; | |
1021 | unsigned char minimum_instruction_length {}; | |
1022 | unsigned char maximum_ops_per_instruction {}; | |
1023 | unsigned char default_is_stmt {}; | |
1024 | int line_base {}; | |
1025 | unsigned char line_range {}; | |
1026 | unsigned char opcode_base {}; | |
debd256d JB |
1027 | |
1028 | /* standard_opcode_lengths[i] is the number of operands for the | |
1029 | standard opcode whose value is i. This means that | |
1030 | standard_opcode_lengths[0] is unused, and the last meaningful | |
1031 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
fff8551c | 1032 | std::unique_ptr<unsigned char[]> standard_opcode_lengths; |
debd256d | 1033 | |
fff8551c PA |
1034 | /* The include_directories table. Note these are observing |
1035 | pointers. The memory is owned by debug_line_buffer. */ | |
1036 | std::vector<const char *> include_dirs; | |
debd256d | 1037 | |
fff8551c PA |
1038 | /* The file_names table. */ |
1039 | std::vector<file_entry> file_names; | |
debd256d JB |
1040 | |
1041 | /* The start and end of the statement program following this | |
6502dd73 | 1042 | header. These point into dwarf2_per_objfile->line_buffer. */ |
fff8551c | 1043 | const gdb_byte *statement_program_start {}, *statement_program_end {}; |
debd256d | 1044 | }; |
c906108c | 1045 | |
fff8551c PA |
1046 | typedef std::unique_ptr<line_header> line_header_up; |
1047 | ||
8c43009f PA |
1048 | const char * |
1049 | file_entry::include_dir (const line_header *lh) const | |
1050 | { | |
ecfb656c | 1051 | return lh->include_dir_at (d_index); |
8c43009f PA |
1052 | } |
1053 | ||
c906108c | 1054 | /* When we construct a partial symbol table entry we only |
0963b4bd | 1055 | need this much information. */ |
6f06d47b | 1056 | struct partial_die_info : public allocate_on_obstack |
c906108c | 1057 | { |
6f06d47b YQ |
1058 | partial_die_info (sect_offset sect_off, struct abbrev_info *abbrev); |
1059 | ||
1060 | /* Disable assign but still keep copy ctor, which is needed | |
1061 | load_partial_dies. */ | |
1062 | partial_die_info& operator=(const partial_die_info& rhs) = delete; | |
1063 | ||
52356b79 YQ |
1064 | /* Adjust the partial die before generating a symbol for it. This |
1065 | function may set the is_external flag or change the DIE's | |
1066 | name. */ | |
1067 | void fixup (struct dwarf2_cu *cu); | |
1068 | ||
48fbe735 YQ |
1069 | /* Read a minimal amount of information into the minimal die |
1070 | structure. */ | |
1071 | const gdb_byte *read (const struct die_reader_specs *reader, | |
1072 | const struct abbrev_info &abbrev, | |
1073 | const gdb_byte *info_ptr); | |
1074 | ||
72bf9492 | 1075 | /* Offset of this DIE. */ |
6f06d47b | 1076 | const sect_offset sect_off; |
72bf9492 DJ |
1077 | |
1078 | /* DWARF-2 tag for this DIE. */ | |
6f06d47b | 1079 | const ENUM_BITFIELD(dwarf_tag) tag : 16; |
72bf9492 | 1080 | |
72bf9492 | 1081 | /* Assorted flags describing the data found in this DIE. */ |
6f06d47b YQ |
1082 | const unsigned int has_children : 1; |
1083 | ||
72bf9492 DJ |
1084 | unsigned int is_external : 1; |
1085 | unsigned int is_declaration : 1; | |
1086 | unsigned int has_type : 1; | |
1087 | unsigned int has_specification : 1; | |
1088 | unsigned int has_pc_info : 1; | |
481860b3 | 1089 | unsigned int may_be_inlined : 1; |
72bf9492 | 1090 | |
0c1b455e TT |
1091 | /* This DIE has been marked DW_AT_main_subprogram. */ |
1092 | unsigned int main_subprogram : 1; | |
1093 | ||
72bf9492 DJ |
1094 | /* Flag set if the SCOPE field of this structure has been |
1095 | computed. */ | |
1096 | unsigned int scope_set : 1; | |
1097 | ||
fa4028e9 JB |
1098 | /* Flag set if the DIE has a byte_size attribute. */ |
1099 | unsigned int has_byte_size : 1; | |
1100 | ||
ff908ebf AW |
1101 | /* Flag set if the DIE has a DW_AT_const_value attribute. */ |
1102 | unsigned int has_const_value : 1; | |
1103 | ||
98bfdba5 PA |
1104 | /* Flag set if any of the DIE's children are template arguments. */ |
1105 | unsigned int has_template_arguments : 1; | |
1106 | ||
52356b79 | 1107 | /* Flag set if fixup has been called on this die. */ |
abc72ce4 DE |
1108 | unsigned int fixup_called : 1; |
1109 | ||
36586728 TT |
1110 | /* Flag set if DW_TAG_imported_unit uses DW_FORM_GNU_ref_alt. */ |
1111 | unsigned int is_dwz : 1; | |
1112 | ||
1113 | /* Flag set if spec_offset uses DW_FORM_GNU_ref_alt. */ | |
1114 | unsigned int spec_is_dwz : 1; | |
1115 | ||
72bf9492 | 1116 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 1117 | sometimes a default name for unnamed DIEs. */ |
6f06d47b | 1118 | const char *name = nullptr; |
72bf9492 | 1119 | |
abc72ce4 | 1120 | /* The linkage name, if present. */ |
6f06d47b | 1121 | const char *linkage_name = nullptr; |
abc72ce4 | 1122 | |
72bf9492 DJ |
1123 | /* The scope to prepend to our children. This is generally |
1124 | allocated on the comp_unit_obstack, so will disappear | |
1125 | when this compilation unit leaves the cache. */ | |
6f06d47b | 1126 | const char *scope = nullptr; |
72bf9492 | 1127 | |
95554aad TT |
1128 | /* Some data associated with the partial DIE. The tag determines |
1129 | which field is live. */ | |
1130 | union | |
1131 | { | |
1132 | /* The location description associated with this DIE, if any. */ | |
1133 | struct dwarf_block *locdesc; | |
1134 | /* The offset of an import, for DW_TAG_imported_unit. */ | |
9c541725 | 1135 | sect_offset sect_off; |
6f06d47b | 1136 | } d {}; |
72bf9492 DJ |
1137 | |
1138 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
6f06d47b YQ |
1139 | CORE_ADDR lowpc = 0; |
1140 | CORE_ADDR highpc = 0; | |
72bf9492 | 1141 | |
93311388 | 1142 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 1143 | DW_AT_sibling, if any. */ |
48fbe735 YQ |
1144 | /* NOTE: This member isn't strictly necessary, partial_die_info::read |
1145 | could return DW_AT_sibling values to its caller load_partial_dies. */ | |
6f06d47b | 1146 | const gdb_byte *sibling = nullptr; |
72bf9492 DJ |
1147 | |
1148 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
1149 | DW_AT_specification (or DW_AT_abstract_origin or | |
1150 | DW_AT_extension). */ | |
6f06d47b | 1151 | sect_offset spec_offset {}; |
72bf9492 DJ |
1152 | |
1153 | /* Pointers to this DIE's parent, first child, and next sibling, | |
1154 | if any. */ | |
6f06d47b YQ |
1155 | struct partial_die_info *die_parent = nullptr; |
1156 | struct partial_die_info *die_child = nullptr; | |
1157 | struct partial_die_info *die_sibling = nullptr; | |
1158 | ||
1159 | friend struct partial_die_info * | |
1160 | dwarf2_cu::find_partial_die (sect_offset sect_off); | |
1161 | ||
1162 | private: | |
1163 | /* Only need to do look up in dwarf2_cu::find_partial_die. */ | |
1164 | partial_die_info (sect_offset sect_off) | |
1165 | : partial_die_info (sect_off, DW_TAG_padding, 0) | |
1166 | { | |
1167 | } | |
1168 | ||
1169 | partial_die_info (sect_offset sect_off_, enum dwarf_tag tag_, | |
1170 | int has_children_) | |
1171 | : sect_off (sect_off_), tag (tag_), has_children (has_children_) | |
1172 | { | |
1173 | is_external = 0; | |
1174 | is_declaration = 0; | |
1175 | has_type = 0; | |
1176 | has_specification = 0; | |
1177 | has_pc_info = 0; | |
1178 | may_be_inlined = 0; | |
1179 | main_subprogram = 0; | |
1180 | scope_set = 0; | |
1181 | has_byte_size = 0; | |
1182 | has_const_value = 0; | |
1183 | has_template_arguments = 0; | |
1184 | fixup_called = 0; | |
1185 | is_dwz = 0; | |
1186 | spec_is_dwz = 0; | |
1187 | } | |
c906108c SS |
1188 | }; |
1189 | ||
0963b4bd | 1190 | /* This data structure holds the information of an abbrev. */ |
c906108c SS |
1191 | struct abbrev_info |
1192 | { | |
1193 | unsigned int number; /* number identifying abbrev */ | |
1194 | enum dwarf_tag tag; /* dwarf tag */ | |
f3dd6933 DJ |
1195 | unsigned short has_children; /* boolean */ |
1196 | unsigned short num_attrs; /* number of attributes */ | |
c906108c SS |
1197 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ |
1198 | struct abbrev_info *next; /* next in chain */ | |
1199 | }; | |
1200 | ||
1201 | struct attr_abbrev | |
1202 | { | |
9d25dd43 DE |
1203 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
1204 | ENUM_BITFIELD(dwarf_form) form : 16; | |
43988095 JK |
1205 | |
1206 | /* It is valid only if FORM is DW_FORM_implicit_const. */ | |
1207 | LONGEST implicit_const; | |
c906108c SS |
1208 | }; |
1209 | ||
433df2d4 DE |
1210 | /* Size of abbrev_table.abbrev_hash_table. */ |
1211 | #define ABBREV_HASH_SIZE 121 | |
1212 | ||
1213 | /* Top level data structure to contain an abbreviation table. */ | |
1214 | ||
1215 | struct abbrev_table | |
1216 | { | |
685af9cd TT |
1217 | explicit abbrev_table (sect_offset off) |
1218 | : sect_off (off) | |
1219 | { | |
4a17f768 | 1220 | m_abbrevs = |
685af9cd | 1221 | XOBNEWVEC (&abbrev_obstack, struct abbrev_info *, ABBREV_HASH_SIZE); |
4a17f768 | 1222 | memset (m_abbrevs, 0, ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); |
685af9cd TT |
1223 | } |
1224 | ||
1225 | DISABLE_COPY_AND_ASSIGN (abbrev_table); | |
1226 | ||
1227 | /* Allocate space for a struct abbrev_info object in | |
1228 | ABBREV_TABLE. */ | |
1229 | struct abbrev_info *alloc_abbrev (); | |
1230 | ||
1231 | /* Add an abbreviation to the table. */ | |
1232 | void add_abbrev (unsigned int abbrev_number, struct abbrev_info *abbrev); | |
1233 | ||
1234 | /* Look up an abbrev in the table. | |
1235 | Returns NULL if the abbrev is not found. */ | |
1236 | ||
1237 | struct abbrev_info *lookup_abbrev (unsigned int abbrev_number); | |
1238 | ||
1239 | ||
f4dc4d17 DE |
1240 | /* Where the abbrev table came from. |
1241 | This is used as a sanity check when the table is used. */ | |
685af9cd | 1242 | const sect_offset sect_off; |
433df2d4 DE |
1243 | |
1244 | /* Storage for the abbrev table. */ | |
685af9cd | 1245 | auto_obstack abbrev_obstack; |
433df2d4 | 1246 | |
4a17f768 YQ |
1247 | private: |
1248 | ||
433df2d4 DE |
1249 | /* Hash table of abbrevs. |
1250 | This is an array of size ABBREV_HASH_SIZE allocated in abbrev_obstack. | |
1251 | It could be statically allocated, but the previous code didn't so we | |
1252 | don't either. */ | |
4a17f768 | 1253 | struct abbrev_info **m_abbrevs; |
433df2d4 DE |
1254 | }; |
1255 | ||
685af9cd TT |
1256 | typedef std::unique_ptr<struct abbrev_table> abbrev_table_up; |
1257 | ||
0963b4bd | 1258 | /* Attributes have a name and a value. */ |
b60c80d6 DJ |
1259 | struct attribute |
1260 | { | |
9d25dd43 | 1261 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
8285870a JK |
1262 | ENUM_BITFIELD(dwarf_form) form : 15; |
1263 | ||
1264 | /* Has DW_STRING already been updated by dwarf2_canonicalize_name? This | |
1265 | field should be in u.str (existing only for DW_STRING) but it is kept | |
1266 | here for better struct attribute alignment. */ | |
1267 | unsigned int string_is_canonical : 1; | |
1268 | ||
b60c80d6 DJ |
1269 | union |
1270 | { | |
15d034d0 | 1271 | const char *str; |
b60c80d6 | 1272 | struct dwarf_block *blk; |
43bbcdc2 PH |
1273 | ULONGEST unsnd; |
1274 | LONGEST snd; | |
b60c80d6 | 1275 | CORE_ADDR addr; |
ac9ec31b | 1276 | ULONGEST signature; |
b60c80d6 DJ |
1277 | } |
1278 | u; | |
1279 | }; | |
1280 | ||
0963b4bd | 1281 | /* This data structure holds a complete die structure. */ |
c906108c SS |
1282 | struct die_info |
1283 | { | |
76815b17 DE |
1284 | /* DWARF-2 tag for this DIE. */ |
1285 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
1286 | ||
1287 | /* Number of attributes */ | |
98bfdba5 PA |
1288 | unsigned char num_attrs; |
1289 | ||
1290 | /* True if we're presently building the full type name for the | |
1291 | type derived from this DIE. */ | |
1292 | unsigned char building_fullname : 1; | |
76815b17 | 1293 | |
adde2bff DE |
1294 | /* True if this die is in process. PR 16581. */ |
1295 | unsigned char in_process : 1; | |
1296 | ||
76815b17 DE |
1297 | /* Abbrev number */ |
1298 | unsigned int abbrev; | |
1299 | ||
93311388 | 1300 | /* Offset in .debug_info or .debug_types section. */ |
9c541725 | 1301 | sect_offset sect_off; |
78ba4af6 JB |
1302 | |
1303 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
1304 | points to this die's parent; CHILD points to the first child of | |
1305 | this node; and all the children of a given node are chained | |
4950bc1c | 1306 | together via their SIBLING fields. */ |
639d11d3 DC |
1307 | struct die_info *child; /* Its first child, if any. */ |
1308 | struct die_info *sibling; /* Its next sibling, if any. */ | |
1309 | struct die_info *parent; /* Its parent, if any. */ | |
c906108c | 1310 | |
b60c80d6 DJ |
1311 | /* An array of attributes, with NUM_ATTRS elements. There may be |
1312 | zero, but it's not common and zero-sized arrays are not | |
1313 | sufficiently portable C. */ | |
1314 | struct attribute attrs[1]; | |
c906108c SS |
1315 | }; |
1316 | ||
0963b4bd | 1317 | /* Get at parts of an attribute structure. */ |
c906108c SS |
1318 | |
1319 | #define DW_STRING(attr) ((attr)->u.str) | |
8285870a | 1320 | #define DW_STRING_IS_CANONICAL(attr) ((attr)->string_is_canonical) |
c906108c SS |
1321 | #define DW_UNSND(attr) ((attr)->u.unsnd) |
1322 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
1323 | #define DW_SND(attr) ((attr)->u.snd) | |
1324 | #define DW_ADDR(attr) ((attr)->u.addr) | |
ac9ec31b | 1325 | #define DW_SIGNATURE(attr) ((attr)->u.signature) |
c906108c | 1326 | |
0963b4bd | 1327 | /* Blocks are a bunch of untyped bytes. */ |
c906108c SS |
1328 | struct dwarf_block |
1329 | { | |
56eb65bd | 1330 | size_t size; |
1d6edc3c JK |
1331 | |
1332 | /* Valid only if SIZE is not zero. */ | |
d521ce57 | 1333 | const gdb_byte *data; |
c906108c SS |
1334 | }; |
1335 | ||
c906108c SS |
1336 | #ifndef ATTR_ALLOC_CHUNK |
1337 | #define ATTR_ALLOC_CHUNK 4 | |
1338 | #endif | |
1339 | ||
c906108c SS |
1340 | /* Allocate fields for structs, unions and enums in this size. */ |
1341 | #ifndef DW_FIELD_ALLOC_CHUNK | |
1342 | #define DW_FIELD_ALLOC_CHUNK 4 | |
1343 | #endif | |
1344 | ||
c906108c SS |
1345 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
1346 | but this would require a corresponding change in unpack_field_as_long | |
1347 | and friends. */ | |
1348 | static int bits_per_byte = 8; | |
1349 | ||
2ddeaf8a TT |
1350 | /* When reading a variant or variant part, we track a bit more |
1351 | information about the field, and store it in an object of this | |
1352 | type. */ | |
1353 | ||
1354 | struct variant_field | |
1355 | { | |
1356 | /* If we see a DW_TAG_variant, then this will be the discriminant | |
1357 | value. */ | |
1358 | ULONGEST discriminant_value; | |
1359 | /* If we see a DW_TAG_variant, then this will be set if this is the | |
1360 | default branch. */ | |
1361 | bool default_branch; | |
1362 | /* While reading a DW_TAG_variant_part, this will be set if this | |
1363 | field is the discriminant. */ | |
1364 | bool is_discriminant; | |
1365 | }; | |
1366 | ||
52059ffd TT |
1367 | struct nextfield |
1368 | { | |
be2daae6 TT |
1369 | int accessibility = 0; |
1370 | int virtuality = 0; | |
2ddeaf8a | 1371 | /* Extra information to describe a variant or variant part. */ |
be2daae6 TT |
1372 | struct variant_field variant {}; |
1373 | struct field field {}; | |
52059ffd TT |
1374 | }; |
1375 | ||
1376 | struct fnfieldlist | |
1377 | { | |
be2daae6 TT |
1378 | const char *name = nullptr; |
1379 | std::vector<struct fn_field> fnfields; | |
52059ffd TT |
1380 | }; |
1381 | ||
c906108c SS |
1382 | /* The routines that read and process dies for a C struct or C++ class |
1383 | pass lists of data member fields and lists of member function fields | |
1384 | in an instance of a field_info structure, as defined below. */ | |
1385 | struct field_info | |
c5aa993b | 1386 | { |
0963b4bd | 1387 | /* List of data member and baseclasses fields. */ |
be2daae6 TT |
1388 | std::vector<struct nextfield> fields; |
1389 | std::vector<struct nextfield> baseclasses; | |
c906108c | 1390 | |
7d0ccb61 | 1391 | /* Number of fields (including baseclasses). */ |
be2daae6 | 1392 | int nfields = 0; |
c906108c | 1393 | |
c5aa993b | 1394 | /* Set if the accesibility of one of the fields is not public. */ |
be2daae6 | 1395 | int non_public_fields = 0; |
c906108c | 1396 | |
c5aa993b JM |
1397 | /* Member function fieldlist array, contains name of possibly overloaded |
1398 | member function, number of overloaded member functions and a pointer | |
1399 | to the head of the member function field chain. */ | |
be2daae6 | 1400 | std::vector<struct fnfieldlist> fnfieldlists; |
98751a41 JK |
1401 | |
1402 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
1403 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
be2daae6 | 1404 | std::vector<struct decl_field> typedef_field_list; |
883fd55a KS |
1405 | |
1406 | /* Nested types defined by this class and the number of elements in this | |
1407 | list. */ | |
be2daae6 | 1408 | std::vector<struct decl_field> nested_types_list; |
c5aa993b | 1409 | }; |
c906108c | 1410 | |
10b3939b DJ |
1411 | /* One item on the queue of compilation units to read in full symbols |
1412 | for. */ | |
1413 | struct dwarf2_queue_item | |
1414 | { | |
1415 | struct dwarf2_per_cu_data *per_cu; | |
95554aad | 1416 | enum language pretend_language; |
10b3939b DJ |
1417 | struct dwarf2_queue_item *next; |
1418 | }; | |
1419 | ||
1420 | /* The current queue. */ | |
1421 | static struct dwarf2_queue_item *dwarf2_queue, *dwarf2_queue_tail; | |
1422 | ||
ae038cb0 DJ |
1423 | /* Loaded secondary compilation units are kept in memory until they |
1424 | have not been referenced for the processing of this many | |
1425 | compilation units. Set this to zero to disable caching. Cache | |
1426 | sizes of up to at least twenty will improve startup time for | |
1427 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
b4f54984 | 1428 | static int dwarf_max_cache_age = 5; |
920d2a44 | 1429 | static void |
b4f54984 DE |
1430 | show_dwarf_max_cache_age (struct ui_file *file, int from_tty, |
1431 | struct cmd_list_element *c, const char *value) | |
920d2a44 | 1432 | { |
3e43a32a | 1433 | fprintf_filtered (file, _("The upper bound on the age of cached " |
b4f54984 | 1434 | "DWARF compilation units is %s.\n"), |
920d2a44 AC |
1435 | value); |
1436 | } | |
4390d890 | 1437 | \f |
c906108c SS |
1438 | /* local function prototypes */ |
1439 | ||
a32a8923 DE |
1440 | static const char *get_section_name (const struct dwarf2_section_info *); |
1441 | ||
1442 | static const char *get_section_file_name (const struct dwarf2_section_info *); | |
1443 | ||
918dd910 JK |
1444 | static void dwarf2_find_base_address (struct die_info *die, |
1445 | struct dwarf2_cu *cu); | |
1446 | ||
0018ea6f DE |
1447 | static struct partial_symtab *create_partial_symtab |
1448 | (struct dwarf2_per_cu_data *per_cu, const char *name); | |
1449 | ||
f1902523 JK |
1450 | static void build_type_psymtabs_reader (const struct die_reader_specs *reader, |
1451 | const gdb_byte *info_ptr, | |
1452 | struct die_info *type_unit_die, | |
1453 | int has_children, void *data); | |
1454 | ||
ed2dc618 SM |
1455 | static void dwarf2_build_psymtabs_hard |
1456 | (struct dwarf2_per_objfile *dwarf2_per_objfile); | |
c906108c | 1457 | |
72bf9492 DJ |
1458 | static void scan_partial_symbols (struct partial_die_info *, |
1459 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 1460 | int, struct dwarf2_cu *); |
c906108c | 1461 | |
72bf9492 DJ |
1462 | static void add_partial_symbol (struct partial_die_info *, |
1463 | struct dwarf2_cu *); | |
63d06c5c | 1464 | |
72bf9492 DJ |
1465 | static void add_partial_namespace (struct partial_die_info *pdi, |
1466 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 1467 | int set_addrmap, struct dwarf2_cu *cu); |
63d06c5c | 1468 | |
5d7cb8df | 1469 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
cdc07690 | 1470 | CORE_ADDR *highpc, int set_addrmap, |
5d7cb8df JK |
1471 | struct dwarf2_cu *cu); |
1472 | ||
72bf9492 DJ |
1473 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
1474 | struct dwarf2_cu *cu); | |
91c24f0a | 1475 | |
bc30ff58 JB |
1476 | static void add_partial_subprogram (struct partial_die_info *pdi, |
1477 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1478 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 1479 | |
257e7a09 YQ |
1480 | static void dwarf2_read_symtab (struct partial_symtab *, |
1481 | struct objfile *); | |
c906108c | 1482 | |
a14ed312 | 1483 | static void psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 1484 | |
685af9cd | 1485 | static abbrev_table_up abbrev_table_read_table |
ed2dc618 SM |
1486 | (struct dwarf2_per_objfile *dwarf2_per_objfile, struct dwarf2_section_info *, |
1487 | sect_offset); | |
433df2d4 | 1488 | |
d521ce57 | 1489 | static unsigned int peek_abbrev_code (bfd *, const gdb_byte *); |
6caca83c | 1490 | |
dee91e82 | 1491 | static struct partial_die_info *load_partial_dies |
d521ce57 | 1492 | (const struct die_reader_specs *, const gdb_byte *, int); |
72bf9492 | 1493 | |
36586728 | 1494 | static struct partial_die_info *find_partial_die (sect_offset, int, |
10b3939b | 1495 | struct dwarf2_cu *); |
72bf9492 | 1496 | |
d521ce57 TT |
1497 | static const gdb_byte *read_attribute (const struct die_reader_specs *, |
1498 | struct attribute *, struct attr_abbrev *, | |
1499 | const gdb_byte *); | |
a8329558 | 1500 | |
a1855c1d | 1501 | static unsigned int read_1_byte (bfd *, const gdb_byte *); |
c906108c | 1502 | |
a1855c1d | 1503 | static int read_1_signed_byte (bfd *, const gdb_byte *); |
c906108c | 1504 | |
a1855c1d | 1505 | static unsigned int read_2_bytes (bfd *, const gdb_byte *); |
c906108c | 1506 | |
a1855c1d | 1507 | static unsigned int read_4_bytes (bfd *, const gdb_byte *); |
c906108c | 1508 | |
a1855c1d | 1509 | static ULONGEST read_8_bytes (bfd *, const gdb_byte *); |
c906108c | 1510 | |
d521ce57 | 1511 | static CORE_ADDR read_address (bfd *, const gdb_byte *ptr, struct dwarf2_cu *, |
891d2f0b | 1512 | unsigned int *); |
c906108c | 1513 | |
d521ce57 | 1514 | static LONGEST read_initial_length (bfd *, const gdb_byte *, unsigned int *); |
c764a876 DE |
1515 | |
1516 | static LONGEST read_checked_initial_length_and_offset | |
d521ce57 | 1517 | (bfd *, const gdb_byte *, const struct comp_unit_head *, |
c764a876 | 1518 | unsigned int *, unsigned int *); |
613e1657 | 1519 | |
d521ce57 TT |
1520 | static LONGEST read_offset (bfd *, const gdb_byte *, |
1521 | const struct comp_unit_head *, | |
c764a876 DE |
1522 | unsigned int *); |
1523 | ||
d521ce57 | 1524 | static LONGEST read_offset_1 (bfd *, const gdb_byte *, unsigned int); |
613e1657 | 1525 | |
ed2dc618 SM |
1526 | static sect_offset read_abbrev_offset |
1527 | (struct dwarf2_per_objfile *dwarf2_per_objfile, | |
1528 | struct dwarf2_section_info *, sect_offset); | |
f4dc4d17 | 1529 | |
d521ce57 | 1530 | static const gdb_byte *read_n_bytes (bfd *, const gdb_byte *, unsigned int); |
c906108c | 1531 | |
d521ce57 | 1532 | static const char *read_direct_string (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1533 | |
ed2dc618 SM |
1534 | static const char *read_indirect_string |
1535 | (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *, const gdb_byte *, | |
1536 | const struct comp_unit_head *, unsigned int *); | |
4bdf3d34 | 1537 | |
ed2dc618 SM |
1538 | static const char *read_indirect_line_string |
1539 | (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *, const gdb_byte *, | |
1540 | const struct comp_unit_head *, unsigned int *); | |
36586728 | 1541 | |
ed2dc618 SM |
1542 | static const char *read_indirect_string_at_offset |
1543 | (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *abfd, | |
1544 | LONGEST str_offset); | |
927aa2e7 | 1545 | |
ed2dc618 SM |
1546 | static const char *read_indirect_string_from_dwz |
1547 | (struct objfile *objfile, struct dwz_file *, LONGEST); | |
c906108c | 1548 | |
d521ce57 | 1549 | static LONGEST read_signed_leb128 (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1550 | |
d521ce57 TT |
1551 | static CORE_ADDR read_addr_index_from_leb128 (struct dwarf2_cu *, |
1552 | const gdb_byte *, | |
3019eac3 DE |
1553 | unsigned int *); |
1554 | ||
d521ce57 | 1555 | static const char *read_str_index (const struct die_reader_specs *reader, |
342587c4 | 1556 | ULONGEST str_index); |
3019eac3 | 1557 | |
e142c38c | 1558 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 1559 | |
e142c38c DJ |
1560 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
1561 | struct dwarf2_cu *); | |
c906108c | 1562 | |
348e048f | 1563 | static struct attribute *dwarf2_attr_no_follow (struct die_info *, |
45e58e77 | 1564 | unsigned int); |
348e048f | 1565 | |
7d45c7c3 KB |
1566 | static const char *dwarf2_string_attr (struct die_info *die, unsigned int name, |
1567 | struct dwarf2_cu *cu); | |
1568 | ||
05cf31d1 JB |
1569 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
1570 | struct dwarf2_cu *cu); | |
1571 | ||
e142c38c | 1572 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1573 | |
e142c38c | 1574 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1575 | struct dwarf2_cu **); |
63d06c5c | 1576 | |
9c541725 | 1577 | static line_header_up dwarf_decode_line_header (sect_offset sect_off, |
fff8551c | 1578 | struct dwarf2_cu *cu); |
debd256d | 1579 | |
f3f5162e | 1580 | static void dwarf_decode_lines (struct line_header *, const char *, |
c3b7b696 | 1581 | struct dwarf2_cu *, struct partial_symtab *, |
527f3840 | 1582 | CORE_ADDR, int decode_mapping); |
c906108c | 1583 | |
804d2729 TT |
1584 | static void dwarf2_start_subfile (struct dwarf2_cu *, const char *, |
1585 | const char *); | |
c906108c | 1586 | |
43f3e411 DE |
1587 | static struct compunit_symtab *dwarf2_start_symtab (struct dwarf2_cu *, |
1588 | const char *, const char *, | |
1589 | CORE_ADDR); | |
f4dc4d17 | 1590 | |
a14ed312 | 1591 | static struct symbol *new_symbol (struct die_info *, struct type *, |
5e2db402 | 1592 | struct dwarf2_cu *, struct symbol * = NULL); |
34eaf542 | 1593 | |
ff39bb5e | 1594 | static void dwarf2_const_value (const struct attribute *, struct symbol *, |
e7c27a73 | 1595 | struct dwarf2_cu *); |
c906108c | 1596 | |
ff39bb5e | 1597 | static void dwarf2_const_value_attr (const struct attribute *attr, |
98bfdba5 PA |
1598 | struct type *type, |
1599 | const char *name, | |
1600 | struct obstack *obstack, | |
12df843f | 1601 | struct dwarf2_cu *cu, LONGEST *value, |
d521ce57 | 1602 | const gdb_byte **bytes, |
98bfdba5 | 1603 | struct dwarf2_locexpr_baton **baton); |
2df3850c | 1604 | |
e7c27a73 | 1605 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1606 | |
b4ba55a1 JB |
1607 | static int need_gnat_info (struct dwarf2_cu *); |
1608 | ||
3e43a32a MS |
1609 | static struct type *die_descriptive_type (struct die_info *, |
1610 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1611 | |
1612 | static void set_descriptive_type (struct type *, struct die_info *, | |
1613 | struct dwarf2_cu *); | |
1614 | ||
e7c27a73 DJ |
1615 | static struct type *die_containing_type (struct die_info *, |
1616 | struct dwarf2_cu *); | |
c906108c | 1617 | |
ff39bb5e | 1618 | static struct type *lookup_die_type (struct die_info *, const struct attribute *, |
673bfd45 | 1619 | struct dwarf2_cu *); |
c906108c | 1620 | |
f792889a | 1621 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1622 | |
673bfd45 DE |
1623 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1624 | ||
0d5cff50 | 1625 | static const char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1626 | |
6e70227d | 1627 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1628 | const char *suffix, int physname, |
1629 | struct dwarf2_cu *cu); | |
63d06c5c | 1630 | |
e7c27a73 | 1631 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1632 | |
348e048f DE |
1633 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1634 | ||
e7c27a73 | 1635 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1636 | |
e7c27a73 | 1637 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1638 | |
96408a79 SA |
1639 | static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu); |
1640 | ||
71a3c369 TT |
1641 | static void read_variable (struct die_info *die, struct dwarf2_cu *cu); |
1642 | ||
ff013f42 JK |
1643 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
1644 | struct dwarf2_cu *, struct partial_symtab *); | |
1645 | ||
3a2b436a | 1646 | /* How dwarf2_get_pc_bounds constructed its *LOWPC and *HIGHPC return |
e385593e | 1647 | values. Keep the items ordered with increasing constraints compliance. */ |
3a2b436a JK |
1648 | enum pc_bounds_kind |
1649 | { | |
e385593e | 1650 | /* No attribute DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges was found. */ |
3a2b436a JK |
1651 | PC_BOUNDS_NOT_PRESENT, |
1652 | ||
e385593e JK |
1653 | /* Some of the attributes DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges |
1654 | were present but they do not form a valid range of PC addresses. */ | |
1655 | PC_BOUNDS_INVALID, | |
1656 | ||
3a2b436a JK |
1657 | /* Discontiguous range was found - that is DW_AT_ranges was found. */ |
1658 | PC_BOUNDS_RANGES, | |
1659 | ||
1660 | /* Contiguous range was found - DW_AT_low_pc and DW_AT_high_pc were found. */ | |
1661 | PC_BOUNDS_HIGH_LOW, | |
1662 | }; | |
1663 | ||
1664 | static enum pc_bounds_kind dwarf2_get_pc_bounds (struct die_info *, | |
1665 | CORE_ADDR *, CORE_ADDR *, | |
1666 | struct dwarf2_cu *, | |
1667 | struct partial_symtab *); | |
c906108c | 1668 | |
fae299cd DC |
1669 | static void get_scope_pc_bounds (struct die_info *, |
1670 | CORE_ADDR *, CORE_ADDR *, | |
1671 | struct dwarf2_cu *); | |
1672 | ||
801e3a5b JB |
1673 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
1674 | CORE_ADDR, struct dwarf2_cu *); | |
1675 | ||
a14ed312 | 1676 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1677 | struct dwarf2_cu *); |
c906108c | 1678 | |
a14ed312 | 1679 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1680 | struct type *, struct dwarf2_cu *); |
c906108c | 1681 | |
a14ed312 | 1682 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1683 | struct die_info *, struct type *, |
e7c27a73 | 1684 | struct dwarf2_cu *); |
c906108c | 1685 | |
a14ed312 | 1686 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1687 | struct type *, |
1688 | struct dwarf2_cu *); | |
c906108c | 1689 | |
134d01f1 | 1690 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1691 | |
e7c27a73 | 1692 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1693 | |
e7c27a73 | 1694 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1695 | |
5d7cb8df JK |
1696 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1697 | ||
804d2729 | 1698 | static struct using_direct **using_directives (struct dwarf2_cu *cu); |
22cee43f | 1699 | |
27aa8d6a SW |
1700 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1701 | ||
74921315 KS |
1702 | static int read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu); |
1703 | ||
f55ee35c JK |
1704 | static struct type *read_module_type (struct die_info *die, |
1705 | struct dwarf2_cu *cu); | |
1706 | ||
38d518c9 | 1707 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1708 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1709 | |
134d01f1 | 1710 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1711 | |
e7c27a73 | 1712 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 1713 | |
6e70227d | 1714 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1715 | struct dwarf2_cu *); |
1716 | ||
bf6af496 | 1717 | static struct die_info *read_die_and_siblings_1 |
d521ce57 | 1718 | (const struct die_reader_specs *, const gdb_byte *, const gdb_byte **, |
bf6af496 | 1719 | struct die_info *); |
639d11d3 | 1720 | |
dee91e82 | 1721 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *, |
d521ce57 TT |
1722 | const gdb_byte *info_ptr, |
1723 | const gdb_byte **new_info_ptr, | |
639d11d3 DC |
1724 | struct die_info *parent); |
1725 | ||
d521ce57 TT |
1726 | static const gdb_byte *read_full_die_1 (const struct die_reader_specs *, |
1727 | struct die_info **, const gdb_byte *, | |
1728 | int *, int); | |
3019eac3 | 1729 | |
d521ce57 TT |
1730 | static const gdb_byte *read_full_die (const struct die_reader_specs *, |
1731 | struct die_info **, const gdb_byte *, | |
1732 | int *); | |
93311388 | 1733 | |
e7c27a73 | 1734 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1735 | |
15d034d0 TT |
1736 | static const char *dwarf2_canonicalize_name (const char *, struct dwarf2_cu *, |
1737 | struct obstack *); | |
71c25dea | 1738 | |
15d034d0 | 1739 | static const char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1740 | |
15d034d0 | 1741 | static const char *dwarf2_full_name (const char *name, |
98bfdba5 PA |
1742 | struct die_info *die, |
1743 | struct dwarf2_cu *cu); | |
1744 | ||
ca69b9e6 DE |
1745 | static const char *dwarf2_physname (const char *name, struct die_info *die, |
1746 | struct dwarf2_cu *cu); | |
1747 | ||
e142c38c | 1748 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1749 | struct dwarf2_cu **); |
9219021c | 1750 | |
f39c6ffd | 1751 | static const char *dwarf_tag_name (unsigned int); |
c906108c | 1752 | |
f39c6ffd | 1753 | static const char *dwarf_attr_name (unsigned int); |
c906108c | 1754 | |
f39c6ffd | 1755 | static const char *dwarf_form_name (unsigned int); |
c906108c | 1756 | |
a121b7c1 | 1757 | static const char *dwarf_bool_name (unsigned int); |
c906108c | 1758 | |
f39c6ffd | 1759 | static const char *dwarf_type_encoding_name (unsigned int); |
c906108c | 1760 | |
f9aca02d | 1761 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 1762 | |
d97bc12b DE |
1763 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1764 | ||
1765 | static void dump_die_for_error (struct die_info *); | |
1766 | ||
1767 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1768 | struct die_info *); | |
c906108c | 1769 | |
d97bc12b | 1770 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1771 | |
51545339 | 1772 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1773 | struct dwarf2_cu *); |
c906108c | 1774 | |
ff39bb5e | 1775 | static sect_offset dwarf2_get_ref_die_offset (const struct attribute *); |
c906108c | 1776 | |
ff39bb5e | 1777 | static LONGEST dwarf2_get_attr_constant_value (const struct attribute *, int); |
a02abb62 | 1778 | |
348e048f | 1779 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
ff39bb5e | 1780 | const struct attribute *, |
348e048f DE |
1781 | struct dwarf2_cu **); |
1782 | ||
10b3939b | 1783 | static struct die_info *follow_die_ref (struct die_info *, |
ff39bb5e | 1784 | const struct attribute *, |
f2f0e013 | 1785 | struct dwarf2_cu **); |
c906108c | 1786 | |
348e048f | 1787 | static struct die_info *follow_die_sig (struct die_info *, |
ff39bb5e | 1788 | const struct attribute *, |
348e048f DE |
1789 | struct dwarf2_cu **); |
1790 | ||
ac9ec31b DE |
1791 | static struct type *get_signatured_type (struct die_info *, ULONGEST, |
1792 | struct dwarf2_cu *); | |
1793 | ||
1794 | static struct type *get_DW_AT_signature_type (struct die_info *, | |
ff39bb5e | 1795 | const struct attribute *, |
ac9ec31b DE |
1796 | struct dwarf2_cu *); |
1797 | ||
e5fe5e75 | 1798 | static void load_full_type_unit (struct dwarf2_per_cu_data *per_cu); |
348e048f | 1799 | |
52dc124a | 1800 | static void read_signatured_type (struct signatured_type *); |
348e048f | 1801 | |
63e43d3a PMR |
1802 | static int attr_to_dynamic_prop (const struct attribute *attr, |
1803 | struct die_info *die, struct dwarf2_cu *cu, | |
1804 | struct dynamic_prop *prop); | |
1805 | ||
c906108c SS |
1806 | /* memory allocation interface */ |
1807 | ||
7b5a2f43 | 1808 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1809 | |
b60c80d6 | 1810 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1811 | |
43f3e411 | 1812 | static void dwarf_decode_macros (struct dwarf2_cu *, unsigned int, int); |
2e276125 | 1813 | |
6e5a29e1 | 1814 | static int attr_form_is_block (const struct attribute *); |
8e19ed76 | 1815 | |
6e5a29e1 | 1816 | static int attr_form_is_section_offset (const struct attribute *); |
3690dd37 | 1817 | |
6e5a29e1 | 1818 | static int attr_form_is_constant (const struct attribute *); |
3690dd37 | 1819 | |
6e5a29e1 | 1820 | static int attr_form_is_ref (const struct attribute *); |
7771576e | 1821 | |
8cf6f0b1 TT |
1822 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
1823 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 1824 | const struct attribute *attr); |
8cf6f0b1 | 1825 | |
ff39bb5e | 1826 | static void dwarf2_symbol_mark_computed (const struct attribute *attr, |
93e7bd98 | 1827 | struct symbol *sym, |
f1e6e072 TT |
1828 | struct dwarf2_cu *cu, |
1829 | int is_block); | |
4c2df51b | 1830 | |
d521ce57 TT |
1831 | static const gdb_byte *skip_one_die (const struct die_reader_specs *reader, |
1832 | const gdb_byte *info_ptr, | |
1833 | struct abbrev_info *abbrev); | |
4bb7a0a7 | 1834 | |
72bf9492 DJ |
1835 | static hashval_t partial_die_hash (const void *item); |
1836 | ||
1837 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1838 | ||
ae038cb0 | 1839 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
ed2dc618 SM |
1840 | (sect_offset sect_off, unsigned int offset_in_dwz, |
1841 | struct dwarf2_per_objfile *dwarf2_per_objfile); | |
ae038cb0 | 1842 | |
9816fde3 | 1843 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, |
95554aad TT |
1844 | struct die_info *comp_unit_die, |
1845 | enum language pretend_language); | |
93311388 | 1846 | |
ed2dc618 | 1847 | static void age_cached_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
ae038cb0 | 1848 | |
dee91e82 | 1849 | static void free_one_cached_comp_unit (struct dwarf2_per_cu_data *); |
ae038cb0 | 1850 | |
f792889a DJ |
1851 | static struct type *set_die_type (struct die_info *, struct type *, |
1852 | struct dwarf2_cu *); | |
1c379e20 | 1853 | |
ed2dc618 | 1854 | static void create_all_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
ae038cb0 | 1855 | |
ed2dc618 | 1856 | static int create_all_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
1fd400ff | 1857 | |
58f0c718 | 1858 | static void load_full_comp_unit (struct dwarf2_per_cu_data *, bool, |
95554aad | 1859 | enum language); |
10b3939b | 1860 | |
95554aad TT |
1861 | static void process_full_comp_unit (struct dwarf2_per_cu_data *, |
1862 | enum language); | |
10b3939b | 1863 | |
f4dc4d17 DE |
1864 | static void process_full_type_unit (struct dwarf2_per_cu_data *, |
1865 | enum language); | |
1866 | ||
10b3939b DJ |
1867 | static void dwarf2_add_dependence (struct dwarf2_cu *, |
1868 | struct dwarf2_per_cu_data *); | |
1869 | ||
ae038cb0 DJ |
1870 | static void dwarf2_mark (struct dwarf2_cu *); |
1871 | ||
1872 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1873 | ||
b64f50a1 | 1874 | static struct type *get_die_type_at_offset (sect_offset, |
ac9ec31b | 1875 | struct dwarf2_per_cu_data *); |
673bfd45 | 1876 | |
f792889a | 1877 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1878 | |
95554aad TT |
1879 | static void queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
1880 | enum language pretend_language); | |
1881 | ||
ed2dc618 | 1882 | static void process_queue (struct dwarf2_per_objfile *dwarf2_per_objfile); |
9291a0cd | 1883 | |
b303c6f6 AB |
1884 | /* Class, the destructor of which frees all allocated queue entries. This |
1885 | will only have work to do if an error was thrown while processing the | |
1886 | dwarf. If no error was thrown then the queue entries should have all | |
1887 | been processed, and freed, as we went along. */ | |
1888 | ||
1889 | class dwarf2_queue_guard | |
1890 | { | |
1891 | public: | |
1892 | dwarf2_queue_guard () = default; | |
1893 | ||
1894 | /* Free any entries remaining on the queue. There should only be | |
1895 | entries left if we hit an error while processing the dwarf. */ | |
1896 | ~dwarf2_queue_guard () | |
1897 | { | |
1898 | struct dwarf2_queue_item *item, *last; | |
1899 | ||
1900 | item = dwarf2_queue; | |
1901 | while (item) | |
1902 | { | |
1903 | /* Anything still marked queued is likely to be in an | |
1904 | inconsistent state, so discard it. */ | |
1905 | if (item->per_cu->queued) | |
1906 | { | |
1907 | if (item->per_cu->cu != NULL) | |
1908 | free_one_cached_comp_unit (item->per_cu); | |
1909 | item->per_cu->queued = 0; | |
1910 | } | |
1911 | ||
1912 | last = item; | |
1913 | item = item->next; | |
1914 | xfree (last); | |
1915 | } | |
1916 | ||
1917 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
1918 | } | |
1919 | }; | |
1920 | ||
d721ba37 PA |
1921 | /* The return type of find_file_and_directory. Note, the enclosed |
1922 | string pointers are only valid while this object is valid. */ | |
1923 | ||
1924 | struct file_and_directory | |
1925 | { | |
1926 | /* The filename. This is never NULL. */ | |
1927 | const char *name; | |
1928 | ||
1929 | /* The compilation directory. NULL if not known. If we needed to | |
1930 | compute a new string, this points to COMP_DIR_STORAGE, otherwise, | |
1931 | points directly to the DW_AT_comp_dir string attribute owned by | |
1932 | the obstack that owns the DIE. */ | |
1933 | const char *comp_dir; | |
1934 | ||
1935 | /* If we needed to build a new string for comp_dir, this is what | |
1936 | owns the storage. */ | |
1937 | std::string comp_dir_storage; | |
1938 | }; | |
1939 | ||
1940 | static file_and_directory find_file_and_directory (struct die_info *die, | |
1941 | struct dwarf2_cu *cu); | |
9291a0cd TT |
1942 | |
1943 | static char *file_full_name (int file, struct line_header *lh, | |
1944 | const char *comp_dir); | |
1945 | ||
43988095 JK |
1946 | /* Expected enum dwarf_unit_type for read_comp_unit_head. */ |
1947 | enum class rcuh_kind { COMPILE, TYPE }; | |
1948 | ||
d521ce57 | 1949 | static const gdb_byte *read_and_check_comp_unit_head |
ed2dc618 SM |
1950 | (struct dwarf2_per_objfile* dwarf2_per_objfile, |
1951 | struct comp_unit_head *header, | |
36586728 | 1952 | struct dwarf2_section_info *section, |
d521ce57 | 1953 | struct dwarf2_section_info *abbrev_section, const gdb_byte *info_ptr, |
43988095 | 1954 | rcuh_kind section_kind); |
36586728 | 1955 | |
fd820528 | 1956 | static void init_cutu_and_read_dies |
f4dc4d17 | 1957 | (struct dwarf2_per_cu_data *this_cu, struct abbrev_table *abbrev_table, |
58f0c718 | 1958 | int use_existing_cu, int keep, bool skip_partial, |
3019eac3 DE |
1959 | die_reader_func_ftype *die_reader_func, void *data); |
1960 | ||
dee91e82 DE |
1961 | static void init_cutu_and_read_dies_simple |
1962 | (struct dwarf2_per_cu_data *this_cu, | |
1963 | die_reader_func_ftype *die_reader_func, void *data); | |
9291a0cd | 1964 | |
673bfd45 | 1965 | static htab_t allocate_signatured_type_table (struct objfile *objfile); |
1fd400ff | 1966 | |
3019eac3 DE |
1967 | static htab_t allocate_dwo_unit_table (struct objfile *objfile); |
1968 | ||
57d63ce2 | 1969 | static struct dwo_unit *lookup_dwo_unit_in_dwp |
ed2dc618 SM |
1970 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
1971 | struct dwp_file *dwp_file, const char *comp_dir, | |
57d63ce2 | 1972 | ULONGEST signature, int is_debug_types); |
a2ce51a0 | 1973 | |
ed2dc618 SM |
1974 | static struct dwp_file *get_dwp_file |
1975 | (struct dwarf2_per_objfile *dwarf2_per_objfile); | |
a2ce51a0 | 1976 | |
3019eac3 | 1977 | static struct dwo_unit *lookup_dwo_comp_unit |
a1855c1d | 1978 | (struct dwarf2_per_cu_data *, const char *, const char *, ULONGEST); |
3019eac3 DE |
1979 | |
1980 | static struct dwo_unit *lookup_dwo_type_unit | |
a1855c1d | 1981 | (struct signatured_type *, const char *, const char *); |
3019eac3 | 1982 | |
89e63ee4 DE |
1983 | static void queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *); |
1984 | ||
263db9a1 | 1985 | static void free_dwo_file (struct dwo_file *); |
3019eac3 | 1986 | |
263db9a1 TT |
1987 | /* A unique_ptr helper to free a dwo_file. */ |
1988 | ||
1989 | struct dwo_file_deleter | |
ed2dc618 | 1990 | { |
263db9a1 TT |
1991 | void operator() (struct dwo_file *df) const |
1992 | { | |
1993 | free_dwo_file (df); | |
1994 | } | |
ed2dc618 SM |
1995 | }; |
1996 | ||
263db9a1 TT |
1997 | /* A unique pointer to a dwo_file. */ |
1998 | ||
1999 | typedef std::unique_ptr<struct dwo_file, dwo_file_deleter> dwo_file_up; | |
2000 | ||
ed2dc618 | 2001 | static void process_cu_includes (struct dwarf2_per_objfile *dwarf2_per_objfile); |
95554aad | 2002 | |
1b80a9fa | 2003 | static void check_producer (struct dwarf2_cu *cu); |
527f3840 JK |
2004 | |
2005 | static void free_line_header_voidp (void *arg); | |
4390d890 DE |
2006 | \f |
2007 | /* Various complaints about symbol reading that don't abort the process. */ | |
2008 | ||
2009 | static void | |
2010 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
2011 | { | |
b98664d3 | 2012 | complaint (_("statement list doesn't fit in .debug_line section")); |
4390d890 DE |
2013 | } |
2014 | ||
2015 | static void | |
2016 | dwarf2_debug_line_missing_file_complaint (void) | |
2017 | { | |
b98664d3 | 2018 | complaint (_(".debug_line section has line data without a file")); |
4390d890 DE |
2019 | } |
2020 | ||
2021 | static void | |
2022 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
2023 | { | |
b98664d3 | 2024 | complaint (_(".debug_line section has line " |
4390d890 DE |
2025 | "program sequence without an end")); |
2026 | } | |
2027 | ||
2028 | static void | |
2029 | dwarf2_complex_location_expr_complaint (void) | |
2030 | { | |
b98664d3 | 2031 | complaint (_("location expression too complex")); |
4390d890 DE |
2032 | } |
2033 | ||
2034 | static void | |
2035 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
2036 | int arg3) | |
2037 | { | |
b98664d3 | 2038 | complaint (_("const value length mismatch for '%s', got %d, expected %d"), |
4390d890 DE |
2039 | arg1, arg2, arg3); |
2040 | } | |
2041 | ||
2042 | static void | |
2043 | dwarf2_section_buffer_overflow_complaint (struct dwarf2_section_info *section) | |
2044 | { | |
b98664d3 | 2045 | complaint (_("debug info runs off end of %s section" |
4390d890 | 2046 | " [in module %s]"), |
a32a8923 DE |
2047 | get_section_name (section), |
2048 | get_section_file_name (section)); | |
4390d890 | 2049 | } |
1b80a9fa | 2050 | |
4390d890 DE |
2051 | static void |
2052 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
2053 | { | |
b98664d3 | 2054 | complaint (_("macro debug info contains a " |
4390d890 DE |
2055 | "malformed macro definition:\n`%s'"), |
2056 | arg1); | |
2057 | } | |
2058 | ||
2059 | static void | |
2060 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
2061 | { | |
b98664d3 | 2062 | complaint (_("invalid attribute class or form for '%s' in '%s'"), |
4390d890 DE |
2063 | arg1, arg2); |
2064 | } | |
527f3840 JK |
2065 | |
2066 | /* Hash function for line_header_hash. */ | |
2067 | ||
2068 | static hashval_t | |
2069 | line_header_hash (const struct line_header *ofs) | |
2070 | { | |
9c541725 | 2071 | return to_underlying (ofs->sect_off) ^ ofs->offset_in_dwz; |
527f3840 JK |
2072 | } |
2073 | ||
2074 | /* Hash function for htab_create_alloc_ex for line_header_hash. */ | |
2075 | ||
2076 | static hashval_t | |
2077 | line_header_hash_voidp (const void *item) | |
2078 | { | |
9a3c8263 | 2079 | const struct line_header *ofs = (const struct line_header *) item; |
527f3840 JK |
2080 | |
2081 | return line_header_hash (ofs); | |
2082 | } | |
2083 | ||
2084 | /* Equality function for line_header_hash. */ | |
2085 | ||
2086 | static int | |
2087 | line_header_eq_voidp (const void *item_lhs, const void *item_rhs) | |
2088 | { | |
9a3c8263 SM |
2089 | const struct line_header *ofs_lhs = (const struct line_header *) item_lhs; |
2090 | const struct line_header *ofs_rhs = (const struct line_header *) item_rhs; | |
527f3840 | 2091 | |
9c541725 | 2092 | return (ofs_lhs->sect_off == ofs_rhs->sect_off |
527f3840 JK |
2093 | && ofs_lhs->offset_in_dwz == ofs_rhs->offset_in_dwz); |
2094 | } | |
2095 | ||
4390d890 | 2096 | \f |
9291a0cd | 2097 | |
31aa7e4e JB |
2098 | /* Read the given attribute value as an address, taking the attribute's |
2099 | form into account. */ | |
2100 | ||
2101 | static CORE_ADDR | |
2102 | attr_value_as_address (struct attribute *attr) | |
2103 | { | |
2104 | CORE_ADDR addr; | |
2105 | ||
2106 | if (attr->form != DW_FORM_addr && attr->form != DW_FORM_GNU_addr_index) | |
2107 | { | |
2108 | /* Aside from a few clearly defined exceptions, attributes that | |
2109 | contain an address must always be in DW_FORM_addr form. | |
2110 | Unfortunately, some compilers happen to be violating this | |
2111 | requirement by encoding addresses using other forms, such | |
2112 | as DW_FORM_data4 for example. For those broken compilers, | |
2113 | we try to do our best, without any guarantee of success, | |
2114 | to interpret the address correctly. It would also be nice | |
2115 | to generate a complaint, but that would require us to maintain | |
2116 | a list of legitimate cases where a non-address form is allowed, | |
2117 | as well as update callers to pass in at least the CU's DWARF | |
2118 | version. This is more overhead than what we're willing to | |
2119 | expand for a pretty rare case. */ | |
2120 | addr = DW_UNSND (attr); | |
2121 | } | |
2122 | else | |
2123 | addr = DW_ADDR (attr); | |
2124 | ||
2125 | return addr; | |
2126 | } | |
2127 | ||
330cdd98 PA |
2128 | /* See declaration. */ |
2129 | ||
2130 | dwarf2_per_objfile::dwarf2_per_objfile (struct objfile *objfile_, | |
2131 | const dwarf2_debug_sections *names) | |
2132 | : objfile (objfile_) | |
2133 | { | |
2134 | if (names == NULL) | |
2135 | names = &dwarf2_elf_names; | |
2136 | ||
2137 | bfd *obfd = objfile->obfd; | |
2138 | ||
2139 | for (asection *sec = obfd->sections; sec != NULL; sec = sec->next) | |
2140 | locate_sections (obfd, sec, *names); | |
2141 | } | |
2142 | ||
fc8e7e75 SM |
2143 | static void free_dwo_files (htab_t dwo_files, struct objfile *objfile); |
2144 | ||
330cdd98 PA |
2145 | dwarf2_per_objfile::~dwarf2_per_objfile () |
2146 | { | |
2147 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
2148 | free_cached_comp_units (); | |
2149 | ||
2150 | if (quick_file_names_table) | |
2151 | htab_delete (quick_file_names_table); | |
2152 | ||
2153 | if (line_header_hash) | |
2154 | htab_delete (line_header_hash); | |
2155 | ||
b76e467d SM |
2156 | for (dwarf2_per_cu_data *per_cu : all_comp_units) |
2157 | VEC_free (dwarf2_per_cu_ptr, per_cu->imported_symtabs); | |
fc8e7e75 | 2158 | |
b2bdb8cf SM |
2159 | for (signatured_type *sig_type : all_type_units) |
2160 | VEC_free (dwarf2_per_cu_ptr, sig_type->per_cu.imported_symtabs); | |
fc8e7e75 SM |
2161 | |
2162 | VEC_free (dwarf2_section_info_def, types); | |
2163 | ||
2164 | if (dwo_files != NULL) | |
2165 | free_dwo_files (dwo_files, objfile); | |
fc8e7e75 | 2166 | |
330cdd98 PA |
2167 | /* Everything else should be on the objfile obstack. */ |
2168 | } | |
2169 | ||
2170 | /* See declaration. */ | |
2171 | ||
2172 | void | |
2173 | dwarf2_per_objfile::free_cached_comp_units () | |
2174 | { | |
2175 | dwarf2_per_cu_data *per_cu = read_in_chain; | |
2176 | dwarf2_per_cu_data **last_chain = &read_in_chain; | |
2177 | while (per_cu != NULL) | |
2178 | { | |
2179 | dwarf2_per_cu_data *next_cu = per_cu->cu->read_in_chain; | |
2180 | ||
fcd3b13d | 2181 | delete per_cu->cu; |
330cdd98 PA |
2182 | *last_chain = next_cu; |
2183 | per_cu = next_cu; | |
2184 | } | |
2185 | } | |
2186 | ||
11ed8cad TT |
2187 | /* A helper class that calls free_cached_comp_units on |
2188 | destruction. */ | |
2189 | ||
2190 | class free_cached_comp_units | |
2191 | { | |
2192 | public: | |
2193 | ||
2194 | explicit free_cached_comp_units (dwarf2_per_objfile *per_objfile) | |
2195 | : m_per_objfile (per_objfile) | |
2196 | { | |
2197 | } | |
2198 | ||
2199 | ~free_cached_comp_units () | |
2200 | { | |
2201 | m_per_objfile->free_cached_comp_units (); | |
2202 | } | |
2203 | ||
2204 | DISABLE_COPY_AND_ASSIGN (free_cached_comp_units); | |
2205 | ||
2206 | private: | |
2207 | ||
2208 | dwarf2_per_objfile *m_per_objfile; | |
2209 | }; | |
2210 | ||
c906108c | 2211 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
2212 | information and return true if we have enough to do something. |
2213 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
2214 | ELF names are used. */ | |
c906108c SS |
2215 | |
2216 | int | |
251d32d9 TG |
2217 | dwarf2_has_info (struct objfile *objfile, |
2218 | const struct dwarf2_debug_sections *names) | |
c906108c | 2219 | { |
97cbe998 SDJ |
2220 | if (objfile->flags & OBJF_READNEVER) |
2221 | return 0; | |
2222 | ||
ed2dc618 SM |
2223 | struct dwarf2_per_objfile *dwarf2_per_objfile |
2224 | = get_dwarf2_per_objfile (objfile); | |
2225 | ||
2226 | if (dwarf2_per_objfile == NULL) | |
be391dca TT |
2227 | { |
2228 | /* Initialize per-objfile state. */ | |
fd90ace4 YQ |
2229 | dwarf2_per_objfile |
2230 | = new (&objfile->objfile_obstack) struct dwarf2_per_objfile (objfile, | |
2231 | names); | |
ed2dc618 | 2232 | set_dwarf2_per_objfile (objfile, dwarf2_per_objfile); |
be391dca | 2233 | } |
73869dc2 | 2234 | return (!dwarf2_per_objfile->info.is_virtual |
049412e3 | 2235 | && dwarf2_per_objfile->info.s.section != NULL |
73869dc2 | 2236 | && !dwarf2_per_objfile->abbrev.is_virtual |
049412e3 | 2237 | && dwarf2_per_objfile->abbrev.s.section != NULL); |
73869dc2 DE |
2238 | } |
2239 | ||
2240 | /* Return the containing section of virtual section SECTION. */ | |
2241 | ||
2242 | static struct dwarf2_section_info * | |
2243 | get_containing_section (const struct dwarf2_section_info *section) | |
2244 | { | |
2245 | gdb_assert (section->is_virtual); | |
2246 | return section->s.containing_section; | |
c906108c SS |
2247 | } |
2248 | ||
a32a8923 DE |
2249 | /* Return the bfd owner of SECTION. */ |
2250 | ||
2251 | static struct bfd * | |
2252 | get_section_bfd_owner (const struct dwarf2_section_info *section) | |
2253 | { | |
73869dc2 DE |
2254 | if (section->is_virtual) |
2255 | { | |
2256 | section = get_containing_section (section); | |
2257 | gdb_assert (!section->is_virtual); | |
2258 | } | |
049412e3 | 2259 | return section->s.section->owner; |
a32a8923 DE |
2260 | } |
2261 | ||
2262 | /* Return the bfd section of SECTION. | |
2263 | Returns NULL if the section is not present. */ | |
2264 | ||
2265 | static asection * | |
2266 | get_section_bfd_section (const struct dwarf2_section_info *section) | |
2267 | { | |
73869dc2 DE |
2268 | if (section->is_virtual) |
2269 | { | |
2270 | section = get_containing_section (section); | |
2271 | gdb_assert (!section->is_virtual); | |
2272 | } | |
049412e3 | 2273 | return section->s.section; |
a32a8923 DE |
2274 | } |
2275 | ||
2276 | /* Return the name of SECTION. */ | |
2277 | ||
2278 | static const char * | |
2279 | get_section_name (const struct dwarf2_section_info *section) | |
2280 | { | |
2281 | asection *sectp = get_section_bfd_section (section); | |
2282 | ||
2283 | gdb_assert (sectp != NULL); | |
2284 | return bfd_section_name (get_section_bfd_owner (section), sectp); | |
2285 | } | |
2286 | ||
2287 | /* Return the name of the file SECTION is in. */ | |
2288 | ||
2289 | static const char * | |
2290 | get_section_file_name (const struct dwarf2_section_info *section) | |
2291 | { | |
2292 | bfd *abfd = get_section_bfd_owner (section); | |
2293 | ||
2294 | return bfd_get_filename (abfd); | |
2295 | } | |
2296 | ||
2297 | /* Return the id of SECTION. | |
2298 | Returns 0 if SECTION doesn't exist. */ | |
2299 | ||
2300 | static int | |
2301 | get_section_id (const struct dwarf2_section_info *section) | |
2302 | { | |
2303 | asection *sectp = get_section_bfd_section (section); | |
2304 | ||
2305 | if (sectp == NULL) | |
2306 | return 0; | |
2307 | return sectp->id; | |
2308 | } | |
2309 | ||
2310 | /* Return the flags of SECTION. | |
73869dc2 | 2311 | SECTION (or containing section if this is a virtual section) must exist. */ |
a32a8923 DE |
2312 | |
2313 | static int | |
2314 | get_section_flags (const struct dwarf2_section_info *section) | |
2315 | { | |
2316 | asection *sectp = get_section_bfd_section (section); | |
2317 | ||
2318 | gdb_assert (sectp != NULL); | |
2319 | return bfd_get_section_flags (sectp->owner, sectp); | |
2320 | } | |
2321 | ||
251d32d9 TG |
2322 | /* When loading sections, we look either for uncompressed section or for |
2323 | compressed section names. */ | |
233a11ab CS |
2324 | |
2325 | static int | |
251d32d9 TG |
2326 | section_is_p (const char *section_name, |
2327 | const struct dwarf2_section_names *names) | |
233a11ab | 2328 | { |
251d32d9 TG |
2329 | if (names->normal != NULL |
2330 | && strcmp (section_name, names->normal) == 0) | |
2331 | return 1; | |
2332 | if (names->compressed != NULL | |
2333 | && strcmp (section_name, names->compressed) == 0) | |
2334 | return 1; | |
2335 | return 0; | |
233a11ab CS |
2336 | } |
2337 | ||
330cdd98 | 2338 | /* See declaration. */ |
c906108c | 2339 | |
330cdd98 PA |
2340 | void |
2341 | dwarf2_per_objfile::locate_sections (bfd *abfd, asection *sectp, | |
2342 | const dwarf2_debug_sections &names) | |
c906108c | 2343 | { |
dc7650b8 | 2344 | flagword aflag = bfd_get_section_flags (abfd, sectp); |
251d32d9 | 2345 | |
dc7650b8 JK |
2346 | if ((aflag & SEC_HAS_CONTENTS) == 0) |
2347 | { | |
2348 | } | |
330cdd98 | 2349 | else if (section_is_p (sectp->name, &names.info)) |
c906108c | 2350 | { |
330cdd98 PA |
2351 | this->info.s.section = sectp; |
2352 | this->info.size = bfd_get_section_size (sectp); | |
c906108c | 2353 | } |
330cdd98 | 2354 | else if (section_is_p (sectp->name, &names.abbrev)) |
c906108c | 2355 | { |
330cdd98 PA |
2356 | this->abbrev.s.section = sectp; |
2357 | this->abbrev.size = bfd_get_section_size (sectp); | |
c906108c | 2358 | } |
330cdd98 | 2359 | else if (section_is_p (sectp->name, &names.line)) |
c906108c | 2360 | { |
330cdd98 PA |
2361 | this->line.s.section = sectp; |
2362 | this->line.size = bfd_get_section_size (sectp); | |
c906108c | 2363 | } |
330cdd98 | 2364 | else if (section_is_p (sectp->name, &names.loc)) |
c906108c | 2365 | { |
330cdd98 PA |
2366 | this->loc.s.section = sectp; |
2367 | this->loc.size = bfd_get_section_size (sectp); | |
c906108c | 2368 | } |
330cdd98 | 2369 | else if (section_is_p (sectp->name, &names.loclists)) |
43988095 | 2370 | { |
330cdd98 PA |
2371 | this->loclists.s.section = sectp; |
2372 | this->loclists.size = bfd_get_section_size (sectp); | |
43988095 | 2373 | } |
330cdd98 | 2374 | else if (section_is_p (sectp->name, &names.macinfo)) |
c906108c | 2375 | { |
330cdd98 PA |
2376 | this->macinfo.s.section = sectp; |
2377 | this->macinfo.size = bfd_get_section_size (sectp); | |
c906108c | 2378 | } |
330cdd98 | 2379 | else if (section_is_p (sectp->name, &names.macro)) |
cf2c3c16 | 2380 | { |
330cdd98 PA |
2381 | this->macro.s.section = sectp; |
2382 | this->macro.size = bfd_get_section_size (sectp); | |
cf2c3c16 | 2383 | } |
330cdd98 | 2384 | else if (section_is_p (sectp->name, &names.str)) |
c906108c | 2385 | { |
330cdd98 PA |
2386 | this->str.s.section = sectp; |
2387 | this->str.size = bfd_get_section_size (sectp); | |
c906108c | 2388 | } |
330cdd98 | 2389 | else if (section_is_p (sectp->name, &names.line_str)) |
43988095 | 2390 | { |
330cdd98 PA |
2391 | this->line_str.s.section = sectp; |
2392 | this->line_str.size = bfd_get_section_size (sectp); | |
43988095 | 2393 | } |
330cdd98 | 2394 | else if (section_is_p (sectp->name, &names.addr)) |
3019eac3 | 2395 | { |
330cdd98 PA |
2396 | this->addr.s.section = sectp; |
2397 | this->addr.size = bfd_get_section_size (sectp); | |
3019eac3 | 2398 | } |
330cdd98 | 2399 | else if (section_is_p (sectp->name, &names.frame)) |
b6af0555 | 2400 | { |
330cdd98 PA |
2401 | this->frame.s.section = sectp; |
2402 | this->frame.size = bfd_get_section_size (sectp); | |
b6af0555 | 2403 | } |
330cdd98 | 2404 | else if (section_is_p (sectp->name, &names.eh_frame)) |
b6af0555 | 2405 | { |
330cdd98 PA |
2406 | this->eh_frame.s.section = sectp; |
2407 | this->eh_frame.size = bfd_get_section_size (sectp); | |
b6af0555 | 2408 | } |
330cdd98 | 2409 | else if (section_is_p (sectp->name, &names.ranges)) |
af34e669 | 2410 | { |
330cdd98 PA |
2411 | this->ranges.s.section = sectp; |
2412 | this->ranges.size = bfd_get_section_size (sectp); | |
af34e669 | 2413 | } |
330cdd98 | 2414 | else if (section_is_p (sectp->name, &names.rnglists)) |
43988095 | 2415 | { |
330cdd98 PA |
2416 | this->rnglists.s.section = sectp; |
2417 | this->rnglists.size = bfd_get_section_size (sectp); | |
43988095 | 2418 | } |
330cdd98 | 2419 | else if (section_is_p (sectp->name, &names.types)) |
348e048f | 2420 | { |
8b70b953 TT |
2421 | struct dwarf2_section_info type_section; |
2422 | ||
2423 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 2424 | type_section.s.section = sectp; |
8b70b953 TT |
2425 | type_section.size = bfd_get_section_size (sectp); |
2426 | ||
330cdd98 | 2427 | VEC_safe_push (dwarf2_section_info_def, this->types, |
8b70b953 | 2428 | &type_section); |
348e048f | 2429 | } |
330cdd98 | 2430 | else if (section_is_p (sectp->name, &names.gdb_index)) |
9291a0cd | 2431 | { |
330cdd98 PA |
2432 | this->gdb_index.s.section = sectp; |
2433 | this->gdb_index.size = bfd_get_section_size (sectp); | |
9291a0cd | 2434 | } |
927aa2e7 JK |
2435 | else if (section_is_p (sectp->name, &names.debug_names)) |
2436 | { | |
2437 | this->debug_names.s.section = sectp; | |
2438 | this->debug_names.size = bfd_get_section_size (sectp); | |
2439 | } | |
2440 | else if (section_is_p (sectp->name, &names.debug_aranges)) | |
2441 | { | |
2442 | this->debug_aranges.s.section = sectp; | |
2443 | this->debug_aranges.size = bfd_get_section_size (sectp); | |
2444 | } | |
dce234bc | 2445 | |
b4e1fd61 | 2446 | if ((bfd_get_section_flags (abfd, sectp) & (SEC_LOAD | SEC_ALLOC)) |
72dca2f5 | 2447 | && bfd_section_vma (abfd, sectp) == 0) |
330cdd98 | 2448 | this->has_section_at_zero = true; |
c906108c SS |
2449 | } |
2450 | ||
fceca515 DE |
2451 | /* A helper function that decides whether a section is empty, |
2452 | or not present. */ | |
9e0ac564 TT |
2453 | |
2454 | static int | |
19ac8c2e | 2455 | dwarf2_section_empty_p (const struct dwarf2_section_info *section) |
9e0ac564 | 2456 | { |
73869dc2 DE |
2457 | if (section->is_virtual) |
2458 | return section->size == 0; | |
049412e3 | 2459 | return section->s.section == NULL || section->size == 0; |
9e0ac564 TT |
2460 | } |
2461 | ||
cd4fb1b2 | 2462 | /* See dwarf2read.h. */ |
c906108c | 2463 | |
cd4fb1b2 SM |
2464 | void |
2465 | dwarf2_read_section (struct objfile *objfile, dwarf2_section_info *info) | |
c906108c | 2466 | { |
a32a8923 | 2467 | asection *sectp; |
3019eac3 | 2468 | bfd *abfd; |
dce234bc | 2469 | gdb_byte *buf, *retbuf; |
c906108c | 2470 | |
be391dca TT |
2471 | if (info->readin) |
2472 | return; | |
dce234bc | 2473 | info->buffer = NULL; |
be391dca | 2474 | info->readin = 1; |
188dd5d6 | 2475 | |
9e0ac564 | 2476 | if (dwarf2_section_empty_p (info)) |
dce234bc | 2477 | return; |
c906108c | 2478 | |
a32a8923 | 2479 | sectp = get_section_bfd_section (info); |
3019eac3 | 2480 | |
73869dc2 DE |
2481 | /* If this is a virtual section we need to read in the real one first. */ |
2482 | if (info->is_virtual) | |
2483 | { | |
2484 | struct dwarf2_section_info *containing_section = | |
2485 | get_containing_section (info); | |
2486 | ||
2487 | gdb_assert (sectp != NULL); | |
2488 | if ((sectp->flags & SEC_RELOC) != 0) | |
2489 | { | |
2490 | error (_("Dwarf Error: DWP format V2 with relocations is not" | |
2491 | " supported in section %s [in module %s]"), | |
2492 | get_section_name (info), get_section_file_name (info)); | |
2493 | } | |
2494 | dwarf2_read_section (objfile, containing_section); | |
2495 | /* Other code should have already caught virtual sections that don't | |
2496 | fit. */ | |
2497 | gdb_assert (info->virtual_offset + info->size | |
2498 | <= containing_section->size); | |
2499 | /* If the real section is empty or there was a problem reading the | |
2500 | section we shouldn't get here. */ | |
2501 | gdb_assert (containing_section->buffer != NULL); | |
2502 | info->buffer = containing_section->buffer + info->virtual_offset; | |
2503 | return; | |
2504 | } | |
2505 | ||
4bf44c1c TT |
2506 | /* If the section has relocations, we must read it ourselves. |
2507 | Otherwise we attach it to the BFD. */ | |
2508 | if ((sectp->flags & SEC_RELOC) == 0) | |
dce234bc | 2509 | { |
d521ce57 | 2510 | info->buffer = gdb_bfd_map_section (sectp, &info->size); |
4bf44c1c | 2511 | return; |
dce234bc | 2512 | } |
dce234bc | 2513 | |
224c3ddb | 2514 | buf = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, info->size); |
4bf44c1c | 2515 | info->buffer = buf; |
dce234bc PP |
2516 | |
2517 | /* When debugging .o files, we may need to apply relocations; see | |
2518 | http://sourceware.org/ml/gdb-patches/2002-04/msg00136.html . | |
2519 | We never compress sections in .o files, so we only need to | |
2520 | try this when the section is not compressed. */ | |
ac8035ab | 2521 | retbuf = symfile_relocate_debug_section (objfile, sectp, buf); |
dce234bc PP |
2522 | if (retbuf != NULL) |
2523 | { | |
2524 | info->buffer = retbuf; | |
2525 | return; | |
2526 | } | |
2527 | ||
a32a8923 DE |
2528 | abfd = get_section_bfd_owner (info); |
2529 | gdb_assert (abfd != NULL); | |
2530 | ||
dce234bc PP |
2531 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 |
2532 | || bfd_bread (buf, info->size, abfd) != info->size) | |
19ac8c2e DE |
2533 | { |
2534 | error (_("Dwarf Error: Can't read DWARF data" | |
2535 | " in section %s [in module %s]"), | |
2536 | bfd_section_name (abfd, sectp), bfd_get_filename (abfd)); | |
2537 | } | |
dce234bc PP |
2538 | } |
2539 | ||
9e0ac564 TT |
2540 | /* A helper function that returns the size of a section in a safe way. |
2541 | If you are positive that the section has been read before using the | |
2542 | size, then it is safe to refer to the dwarf2_section_info object's | |
2543 | "size" field directly. In other cases, you must call this | |
2544 | function, because for compressed sections the size field is not set | |
2545 | correctly until the section has been read. */ | |
2546 | ||
2547 | static bfd_size_type | |
2548 | dwarf2_section_size (struct objfile *objfile, | |
2549 | struct dwarf2_section_info *info) | |
2550 | { | |
2551 | if (!info->readin) | |
2552 | dwarf2_read_section (objfile, info); | |
2553 | return info->size; | |
2554 | } | |
2555 | ||
dce234bc | 2556 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 2557 | SECTION_NAME. */ |
af34e669 | 2558 | |
dce234bc | 2559 | void |
3017a003 TG |
2560 | dwarf2_get_section_info (struct objfile *objfile, |
2561 | enum dwarf2_section_enum sect, | |
d521ce57 | 2562 | asection **sectp, const gdb_byte **bufp, |
dce234bc PP |
2563 | bfd_size_type *sizep) |
2564 | { | |
2565 | struct dwarf2_per_objfile *data | |
9a3c8263 SM |
2566 | = (struct dwarf2_per_objfile *) objfile_data (objfile, |
2567 | dwarf2_objfile_data_key); | |
dce234bc | 2568 | struct dwarf2_section_info *info; |
a3b2a86b TT |
2569 | |
2570 | /* We may see an objfile without any DWARF, in which case we just | |
2571 | return nothing. */ | |
2572 | if (data == NULL) | |
2573 | { | |
2574 | *sectp = NULL; | |
2575 | *bufp = NULL; | |
2576 | *sizep = 0; | |
2577 | return; | |
2578 | } | |
3017a003 TG |
2579 | switch (sect) |
2580 | { | |
2581 | case DWARF2_DEBUG_FRAME: | |
2582 | info = &data->frame; | |
2583 | break; | |
2584 | case DWARF2_EH_FRAME: | |
2585 | info = &data->eh_frame; | |
2586 | break; | |
2587 | default: | |
2588 | gdb_assert_not_reached ("unexpected section"); | |
2589 | } | |
dce234bc | 2590 | |
9e0ac564 | 2591 | dwarf2_read_section (objfile, info); |
dce234bc | 2592 | |
a32a8923 | 2593 | *sectp = get_section_bfd_section (info); |
dce234bc PP |
2594 | *bufp = info->buffer; |
2595 | *sizep = info->size; | |
2596 | } | |
2597 | ||
36586728 TT |
2598 | /* A helper function to find the sections for a .dwz file. */ |
2599 | ||
2600 | static void | |
2601 | locate_dwz_sections (bfd *abfd, asection *sectp, void *arg) | |
2602 | { | |
9a3c8263 | 2603 | struct dwz_file *dwz_file = (struct dwz_file *) arg; |
36586728 TT |
2604 | |
2605 | /* Note that we only support the standard ELF names, because .dwz | |
2606 | is ELF-only (at the time of writing). */ | |
2607 | if (section_is_p (sectp->name, &dwarf2_elf_names.abbrev)) | |
2608 | { | |
049412e3 | 2609 | dwz_file->abbrev.s.section = sectp; |
36586728 TT |
2610 | dwz_file->abbrev.size = bfd_get_section_size (sectp); |
2611 | } | |
2612 | else if (section_is_p (sectp->name, &dwarf2_elf_names.info)) | |
2613 | { | |
049412e3 | 2614 | dwz_file->info.s.section = sectp; |
36586728 TT |
2615 | dwz_file->info.size = bfd_get_section_size (sectp); |
2616 | } | |
2617 | else if (section_is_p (sectp->name, &dwarf2_elf_names.str)) | |
2618 | { | |
049412e3 | 2619 | dwz_file->str.s.section = sectp; |
36586728 TT |
2620 | dwz_file->str.size = bfd_get_section_size (sectp); |
2621 | } | |
2622 | else if (section_is_p (sectp->name, &dwarf2_elf_names.line)) | |
2623 | { | |
049412e3 | 2624 | dwz_file->line.s.section = sectp; |
36586728 TT |
2625 | dwz_file->line.size = bfd_get_section_size (sectp); |
2626 | } | |
2627 | else if (section_is_p (sectp->name, &dwarf2_elf_names.macro)) | |
2628 | { | |
049412e3 | 2629 | dwz_file->macro.s.section = sectp; |
36586728 TT |
2630 | dwz_file->macro.size = bfd_get_section_size (sectp); |
2631 | } | |
2ec9a5e0 TT |
2632 | else if (section_is_p (sectp->name, &dwarf2_elf_names.gdb_index)) |
2633 | { | |
049412e3 | 2634 | dwz_file->gdb_index.s.section = sectp; |
2ec9a5e0 TT |
2635 | dwz_file->gdb_index.size = bfd_get_section_size (sectp); |
2636 | } | |
927aa2e7 JK |
2637 | else if (section_is_p (sectp->name, &dwarf2_elf_names.debug_names)) |
2638 | { | |
2639 | dwz_file->debug_names.s.section = sectp; | |
2640 | dwz_file->debug_names.size = bfd_get_section_size (sectp); | |
2641 | } | |
36586728 TT |
2642 | } |
2643 | ||
4db1a1dc TT |
2644 | /* Open the separate '.dwz' debug file, if needed. Return NULL if |
2645 | there is no .gnu_debugaltlink section in the file. Error if there | |
2646 | is such a section but the file cannot be found. */ | |
36586728 TT |
2647 | |
2648 | static struct dwz_file * | |
ed2dc618 | 2649 | dwarf2_get_dwz_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
36586728 | 2650 | { |
36586728 | 2651 | const char *filename; |
acd13123 | 2652 | bfd_size_type buildid_len_arg; |
dc294be5 TT |
2653 | size_t buildid_len; |
2654 | bfd_byte *buildid; | |
36586728 TT |
2655 | |
2656 | if (dwarf2_per_objfile->dwz_file != NULL) | |
7ff8cb8c | 2657 | return dwarf2_per_objfile->dwz_file.get (); |
36586728 | 2658 | |
4db1a1dc | 2659 | bfd_set_error (bfd_error_no_error); |
791afaa2 TT |
2660 | gdb::unique_xmalloc_ptr<char> data |
2661 | (bfd_get_alt_debug_link_info (dwarf2_per_objfile->objfile->obfd, | |
2662 | &buildid_len_arg, &buildid)); | |
4db1a1dc TT |
2663 | if (data == NULL) |
2664 | { | |
2665 | if (bfd_get_error () == bfd_error_no_error) | |
2666 | return NULL; | |
2667 | error (_("could not read '.gnu_debugaltlink' section: %s"), | |
2668 | bfd_errmsg (bfd_get_error ())); | |
2669 | } | |
791afaa2 TT |
2670 | |
2671 | gdb::unique_xmalloc_ptr<bfd_byte> buildid_holder (buildid); | |
36586728 | 2672 | |
acd13123 TT |
2673 | buildid_len = (size_t) buildid_len_arg; |
2674 | ||
791afaa2 | 2675 | filename = data.get (); |
d721ba37 PA |
2676 | |
2677 | std::string abs_storage; | |
36586728 TT |
2678 | if (!IS_ABSOLUTE_PATH (filename)) |
2679 | { | |
14278e1f TT |
2680 | gdb::unique_xmalloc_ptr<char> abs |
2681 | = gdb_realpath (objfile_name (dwarf2_per_objfile->objfile)); | |
36586728 | 2682 | |
14278e1f | 2683 | abs_storage = ldirname (abs.get ()) + SLASH_STRING + filename; |
d721ba37 | 2684 | filename = abs_storage.c_str (); |
36586728 TT |
2685 | } |
2686 | ||
dc294be5 TT |
2687 | /* First try the file name given in the section. If that doesn't |
2688 | work, try to use the build-id instead. */ | |
192b62ce | 2689 | gdb_bfd_ref_ptr dwz_bfd (gdb_bfd_open (filename, gnutarget, -1)); |
dc294be5 | 2690 | if (dwz_bfd != NULL) |
36586728 | 2691 | { |
192b62ce TT |
2692 | if (!build_id_verify (dwz_bfd.get (), buildid_len, buildid)) |
2693 | dwz_bfd.release (); | |
36586728 TT |
2694 | } |
2695 | ||
dc294be5 TT |
2696 | if (dwz_bfd == NULL) |
2697 | dwz_bfd = build_id_to_debug_bfd (buildid_len, buildid); | |
2698 | ||
2699 | if (dwz_bfd == NULL) | |
2700 | error (_("could not find '.gnu_debugaltlink' file for %s"), | |
2701 | objfile_name (dwarf2_per_objfile->objfile)); | |
2702 | ||
7ff8cb8c TT |
2703 | std::unique_ptr<struct dwz_file> result |
2704 | (new struct dwz_file (std::move (dwz_bfd))); | |
36586728 | 2705 | |
7ff8cb8c TT |
2706 | bfd_map_over_sections (result->dwz_bfd.get (), locate_dwz_sections, |
2707 | result.get ()); | |
36586728 | 2708 | |
7ff8cb8c TT |
2709 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, |
2710 | result->dwz_bfd.get ()); | |
2711 | dwarf2_per_objfile->dwz_file = std::move (result); | |
2712 | return dwarf2_per_objfile->dwz_file.get (); | |
36586728 | 2713 | } |
9291a0cd | 2714 | \f |
7b9f3c50 DE |
2715 | /* DWARF quick_symbols_functions support. */ |
2716 | ||
2717 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
2718 | unique line tables, so we maintain a separate table of all .debug_line | |
2719 | derived entries to support the sharing. | |
2720 | All the quick functions need is the list of file names. We discard the | |
2721 | line_header when we're done and don't need to record it here. */ | |
2722 | struct quick_file_names | |
2723 | { | |
094b34ac DE |
2724 | /* The data used to construct the hash key. */ |
2725 | struct stmt_list_hash hash; | |
7b9f3c50 DE |
2726 | |
2727 | /* The number of entries in file_names, real_names. */ | |
2728 | unsigned int num_file_names; | |
2729 | ||
2730 | /* The file names from the line table, after being run through | |
2731 | file_full_name. */ | |
2732 | const char **file_names; | |
2733 | ||
2734 | /* The file names from the line table after being run through | |
2735 | gdb_realpath. These are computed lazily. */ | |
2736 | const char **real_names; | |
2737 | }; | |
2738 | ||
2739 | /* When using the index (and thus not using psymtabs), each CU has an | |
2740 | object of this type. This is used to hold information needed by | |
2741 | the various "quick" methods. */ | |
2742 | struct dwarf2_per_cu_quick_data | |
2743 | { | |
2744 | /* The file table. This can be NULL if there was no file table | |
2745 | or it's currently not read in. | |
2746 | NOTE: This points into dwarf2_per_objfile->quick_file_names_table. */ | |
2747 | struct quick_file_names *file_names; | |
2748 | ||
2749 | /* The corresponding symbol table. This is NULL if symbols for this | |
2750 | CU have not yet been read. */ | |
43f3e411 | 2751 | struct compunit_symtab *compunit_symtab; |
7b9f3c50 DE |
2752 | |
2753 | /* A temporary mark bit used when iterating over all CUs in | |
2754 | expand_symtabs_matching. */ | |
2755 | unsigned int mark : 1; | |
2756 | ||
2757 | /* True if we've tried to read the file table and found there isn't one. | |
2758 | There will be no point in trying to read it again next time. */ | |
2759 | unsigned int no_file_data : 1; | |
2760 | }; | |
2761 | ||
094b34ac DE |
2762 | /* Utility hash function for a stmt_list_hash. */ |
2763 | ||
2764 | static hashval_t | |
2765 | hash_stmt_list_entry (const struct stmt_list_hash *stmt_list_hash) | |
2766 | { | |
2767 | hashval_t v = 0; | |
2768 | ||
2769 | if (stmt_list_hash->dwo_unit != NULL) | |
2770 | v += (uintptr_t) stmt_list_hash->dwo_unit->dwo_file; | |
9c541725 | 2771 | v += to_underlying (stmt_list_hash->line_sect_off); |
094b34ac DE |
2772 | return v; |
2773 | } | |
2774 | ||
2775 | /* Utility equality function for a stmt_list_hash. */ | |
2776 | ||
2777 | static int | |
2778 | eq_stmt_list_entry (const struct stmt_list_hash *lhs, | |
2779 | const struct stmt_list_hash *rhs) | |
2780 | { | |
2781 | if ((lhs->dwo_unit != NULL) != (rhs->dwo_unit != NULL)) | |
2782 | return 0; | |
2783 | if (lhs->dwo_unit != NULL | |
2784 | && lhs->dwo_unit->dwo_file != rhs->dwo_unit->dwo_file) | |
2785 | return 0; | |
2786 | ||
9c541725 | 2787 | return lhs->line_sect_off == rhs->line_sect_off; |
094b34ac DE |
2788 | } |
2789 | ||
7b9f3c50 DE |
2790 | /* Hash function for a quick_file_names. */ |
2791 | ||
2792 | static hashval_t | |
2793 | hash_file_name_entry (const void *e) | |
2794 | { | |
9a3c8263 SM |
2795 | const struct quick_file_names *file_data |
2796 | = (const struct quick_file_names *) e; | |
7b9f3c50 | 2797 | |
094b34ac | 2798 | return hash_stmt_list_entry (&file_data->hash); |
7b9f3c50 DE |
2799 | } |
2800 | ||
2801 | /* Equality function for a quick_file_names. */ | |
2802 | ||
2803 | static int | |
2804 | eq_file_name_entry (const void *a, const void *b) | |
2805 | { | |
9a3c8263 SM |
2806 | const struct quick_file_names *ea = (const struct quick_file_names *) a; |
2807 | const struct quick_file_names *eb = (const struct quick_file_names *) b; | |
7b9f3c50 | 2808 | |
094b34ac | 2809 | return eq_stmt_list_entry (&ea->hash, &eb->hash); |
7b9f3c50 DE |
2810 | } |
2811 | ||
2812 | /* Delete function for a quick_file_names. */ | |
2813 | ||
2814 | static void | |
2815 | delete_file_name_entry (void *e) | |
2816 | { | |
9a3c8263 | 2817 | struct quick_file_names *file_data = (struct quick_file_names *) e; |
7b9f3c50 DE |
2818 | int i; |
2819 | ||
2820 | for (i = 0; i < file_data->num_file_names; ++i) | |
2821 | { | |
2822 | xfree ((void*) file_data->file_names[i]); | |
2823 | if (file_data->real_names) | |
2824 | xfree ((void*) file_data->real_names[i]); | |
2825 | } | |
2826 | ||
2827 | /* The space for the struct itself lives on objfile_obstack, | |
2828 | so we don't free it here. */ | |
2829 | } | |
2830 | ||
2831 | /* Create a quick_file_names hash table. */ | |
2832 | ||
2833 | static htab_t | |
2834 | create_quick_file_names_table (unsigned int nr_initial_entries) | |
2835 | { | |
2836 | return htab_create_alloc (nr_initial_entries, | |
2837 | hash_file_name_entry, eq_file_name_entry, | |
2838 | delete_file_name_entry, xcalloc, xfree); | |
2839 | } | |
9291a0cd | 2840 | |
918dd910 JK |
2841 | /* Read in PER_CU->CU. This function is unrelated to symtabs, symtab would |
2842 | have to be created afterwards. You should call age_cached_comp_units after | |
2843 | processing PER_CU->CU. dw2_setup must have been already called. */ | |
2844 | ||
2845 | static void | |
58f0c718 | 2846 | load_cu (struct dwarf2_per_cu_data *per_cu, bool skip_partial) |
918dd910 | 2847 | { |
3019eac3 | 2848 | if (per_cu->is_debug_types) |
e5fe5e75 | 2849 | load_full_type_unit (per_cu); |
918dd910 | 2850 | else |
58f0c718 | 2851 | load_full_comp_unit (per_cu, skip_partial, language_minimal); |
918dd910 | 2852 | |
cc12ce38 DE |
2853 | if (per_cu->cu == NULL) |
2854 | return; /* Dummy CU. */ | |
2dc860c0 DE |
2855 | |
2856 | dwarf2_find_base_address (per_cu->cu->dies, per_cu->cu); | |
918dd910 JK |
2857 | } |
2858 | ||
a0f42c21 | 2859 | /* Read in the symbols for PER_CU. */ |
2fdf6df6 | 2860 | |
9291a0cd | 2861 | static void |
58f0c718 | 2862 | dw2_do_instantiate_symtab (struct dwarf2_per_cu_data *per_cu, bool skip_partial) |
9291a0cd | 2863 | { |
ed2dc618 | 2864 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
9291a0cd | 2865 | |
f4dc4d17 DE |
2866 | /* Skip type_unit_groups, reading the type units they contain |
2867 | is handled elsewhere. */ | |
2868 | if (IS_TYPE_UNIT_GROUP (per_cu)) | |
2869 | return; | |
2870 | ||
b303c6f6 AB |
2871 | /* The destructor of dwarf2_queue_guard frees any entries left on |
2872 | the queue. After this point we're guaranteed to leave this function | |
2873 | with the dwarf queue empty. */ | |
2874 | dwarf2_queue_guard q_guard; | |
9291a0cd | 2875 | |
95554aad | 2876 | if (dwarf2_per_objfile->using_index |
43f3e411 | 2877 | ? per_cu->v.quick->compunit_symtab == NULL |
95554aad TT |
2878 | : (per_cu->v.psymtab == NULL || !per_cu->v.psymtab->readin)) |
2879 | { | |
2880 | queue_comp_unit (per_cu, language_minimal); | |
58f0c718 | 2881 | load_cu (per_cu, skip_partial); |
89e63ee4 DE |
2882 | |
2883 | /* If we just loaded a CU from a DWO, and we're working with an index | |
2884 | that may badly handle TUs, load all the TUs in that DWO as well. | |
2885 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
2886 | if (!per_cu->is_debug_types | |
cc12ce38 | 2887 | && per_cu->cu != NULL |
89e63ee4 DE |
2888 | && per_cu->cu->dwo_unit != NULL |
2889 | && dwarf2_per_objfile->index_table != NULL | |
2890 | && dwarf2_per_objfile->index_table->version <= 7 | |
2891 | /* DWP files aren't supported yet. */ | |
ed2dc618 | 2892 | && get_dwp_file (dwarf2_per_objfile) == NULL) |
89e63ee4 | 2893 | queue_and_load_all_dwo_tus (per_cu); |
95554aad | 2894 | } |
9291a0cd | 2895 | |
ed2dc618 | 2896 | process_queue (dwarf2_per_objfile); |
9291a0cd TT |
2897 | |
2898 | /* Age the cache, releasing compilation units that have not | |
2899 | been used recently. */ | |
ed2dc618 | 2900 | age_cached_comp_units (dwarf2_per_objfile); |
9291a0cd TT |
2901 | } |
2902 | ||
2903 | /* Ensure that the symbols for PER_CU have been read in. OBJFILE is | |
2904 | the objfile from which this CU came. Returns the resulting symbol | |
2905 | table. */ | |
2fdf6df6 | 2906 | |
43f3e411 | 2907 | static struct compunit_symtab * |
58f0c718 | 2908 | dw2_instantiate_symtab (struct dwarf2_per_cu_data *per_cu, bool skip_partial) |
9291a0cd | 2909 | { |
ed2dc618 SM |
2910 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
2911 | ||
95554aad | 2912 | gdb_assert (dwarf2_per_objfile->using_index); |
43f3e411 | 2913 | if (!per_cu->v.quick->compunit_symtab) |
9291a0cd | 2914 | { |
11ed8cad | 2915 | free_cached_comp_units freer (dwarf2_per_objfile); |
c83dd867 | 2916 | scoped_restore decrementer = increment_reading_symtab (); |
58f0c718 | 2917 | dw2_do_instantiate_symtab (per_cu, skip_partial); |
ed2dc618 | 2918 | process_cu_includes (dwarf2_per_objfile); |
9291a0cd | 2919 | } |
f194fefb | 2920 | |
43f3e411 | 2921 | return per_cu->v.quick->compunit_symtab; |
9291a0cd TT |
2922 | } |
2923 | ||
ff4c9fec | 2924 | /* See declaration. */ |
f4dc4d17 | 2925 | |
ff4c9fec SM |
2926 | dwarf2_per_cu_data * |
2927 | dwarf2_per_objfile::get_cutu (int index) | |
2928 | { | |
b76e467d | 2929 | if (index >= this->all_comp_units.size ()) |
ff4c9fec | 2930 | { |
b76e467d | 2931 | index -= this->all_comp_units.size (); |
b2bdb8cf | 2932 | gdb_assert (index < this->all_type_units.size ()); |
ff4c9fec SM |
2933 | return &this->all_type_units[index]->per_cu; |
2934 | } | |
f4dc4d17 | 2935 | |
ff4c9fec SM |
2936 | return this->all_comp_units[index]; |
2937 | } | |
f4dc4d17 | 2938 | |
ff4c9fec | 2939 | /* See declaration. */ |
2fdf6df6 | 2940 | |
ff4c9fec SM |
2941 | dwarf2_per_cu_data * |
2942 | dwarf2_per_objfile::get_cu (int index) | |
1fd400ff | 2943 | { |
b76e467d | 2944 | gdb_assert (index >= 0 && index < this->all_comp_units.size ()); |
f4dc4d17 | 2945 | |
ff4c9fec | 2946 | return this->all_comp_units[index]; |
f4dc4d17 DE |
2947 | } |
2948 | ||
ff4c9fec | 2949 | /* See declaration. */ |
f4dc4d17 | 2950 | |
ff4c9fec SM |
2951 | signatured_type * |
2952 | dwarf2_per_objfile::get_tu (int index) | |
f4dc4d17 | 2953 | { |
b2bdb8cf | 2954 | gdb_assert (index >= 0 && index < this->all_type_units.size ()); |
f4dc4d17 | 2955 | |
ff4c9fec | 2956 | return this->all_type_units[index]; |
1fd400ff TT |
2957 | } |
2958 | ||
4b514bc8 JK |
2959 | /* Return a new dwarf2_per_cu_data allocated on OBJFILE's |
2960 | objfile_obstack, and constructed with the specified field | |
2961 | values. */ | |
2962 | ||
2963 | static dwarf2_per_cu_data * | |
ed2dc618 | 2964 | create_cu_from_index_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
4b514bc8 JK |
2965 | struct dwarf2_section_info *section, |
2966 | int is_dwz, | |
2967 | sect_offset sect_off, ULONGEST length) | |
2968 | { | |
ed2dc618 | 2969 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
4b514bc8 JK |
2970 | dwarf2_per_cu_data *the_cu |
2971 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2972 | struct dwarf2_per_cu_data); | |
2973 | the_cu->sect_off = sect_off; | |
2974 | the_cu->length = length; | |
e3b94546 | 2975 | the_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
4b514bc8 JK |
2976 | the_cu->section = section; |
2977 | the_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2978 | struct dwarf2_per_cu_quick_data); | |
2979 | the_cu->is_dwz = is_dwz; | |
2980 | return the_cu; | |
2981 | } | |
2982 | ||
2ec9a5e0 TT |
2983 | /* A helper for create_cus_from_index that handles a given list of |
2984 | CUs. */ | |
2fdf6df6 | 2985 | |
74a0d9f6 | 2986 | static void |
12359b5e | 2987 | create_cus_from_index_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
2ec9a5e0 TT |
2988 | const gdb_byte *cu_list, offset_type n_elements, |
2989 | struct dwarf2_section_info *section, | |
b76e467d | 2990 | int is_dwz) |
9291a0cd | 2991 | { |
12359b5e | 2992 | for (offset_type i = 0; i < n_elements; i += 2) |
9291a0cd | 2993 | { |
74a0d9f6 | 2994 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
2995 | |
2996 | sect_offset sect_off | |
2997 | = (sect_offset) extract_unsigned_integer (cu_list, 8, BFD_ENDIAN_LITTLE); | |
2998 | ULONGEST length = extract_unsigned_integer (cu_list + 8, 8, BFD_ENDIAN_LITTLE); | |
9291a0cd TT |
2999 | cu_list += 2 * 8; |
3000 | ||
b76e467d | 3001 | dwarf2_per_cu_data *per_cu |
ed2dc618 SM |
3002 | = create_cu_from_index_list (dwarf2_per_objfile, section, is_dwz, |
3003 | sect_off, length); | |
b76e467d | 3004 | dwarf2_per_objfile->all_comp_units.push_back (per_cu); |
9291a0cd | 3005 | } |
9291a0cd TT |
3006 | } |
3007 | ||
2ec9a5e0 | 3008 | /* Read the CU list from the mapped index, and use it to create all |
74a0d9f6 | 3009 | the CU objects for this objfile. */ |
2ec9a5e0 | 3010 | |
74a0d9f6 | 3011 | static void |
12359b5e | 3012 | create_cus_from_index (struct dwarf2_per_objfile *dwarf2_per_objfile, |
2ec9a5e0 TT |
3013 | const gdb_byte *cu_list, offset_type cu_list_elements, |
3014 | const gdb_byte *dwz_list, offset_type dwz_elements) | |
3015 | { | |
b76e467d SM |
3016 | gdb_assert (dwarf2_per_objfile->all_comp_units.empty ()); |
3017 | dwarf2_per_objfile->all_comp_units.reserve | |
3018 | ((cu_list_elements + dwz_elements) / 2); | |
2ec9a5e0 | 3019 | |
12359b5e | 3020 | create_cus_from_index_list (dwarf2_per_objfile, cu_list, cu_list_elements, |
b76e467d | 3021 | &dwarf2_per_objfile->info, 0); |
2ec9a5e0 TT |
3022 | |
3023 | if (dwz_elements == 0) | |
74a0d9f6 | 3024 | return; |
2ec9a5e0 | 3025 | |
12359b5e SM |
3026 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
3027 | create_cus_from_index_list (dwarf2_per_objfile, dwz_list, dwz_elements, | |
b76e467d | 3028 | &dwz->info, 1); |
2ec9a5e0 TT |
3029 | } |
3030 | ||
1fd400ff | 3031 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 3032 | |
74a0d9f6 | 3033 | static void |
12359b5e SM |
3034 | create_signatured_type_table_from_index |
3035 | (struct dwarf2_per_objfile *dwarf2_per_objfile, | |
3036 | struct dwarf2_section_info *section, | |
3037 | const gdb_byte *bytes, | |
3038 | offset_type elements) | |
1fd400ff | 3039 | { |
12359b5e | 3040 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
1fd400ff | 3041 | |
b2bdb8cf SM |
3042 | gdb_assert (dwarf2_per_objfile->all_type_units.empty ()); |
3043 | dwarf2_per_objfile->all_type_units.reserve (elements / 3); | |
1fd400ff | 3044 | |
12359b5e | 3045 | htab_t sig_types_hash = allocate_signatured_type_table (objfile); |
1fd400ff | 3046 | |
12359b5e | 3047 | for (offset_type i = 0; i < elements; i += 3) |
1fd400ff | 3048 | { |
52dc124a | 3049 | struct signatured_type *sig_type; |
9c541725 | 3050 | ULONGEST signature; |
1fd400ff | 3051 | void **slot; |
9c541725 | 3052 | cu_offset type_offset_in_tu; |
1fd400ff | 3053 | |
74a0d9f6 | 3054 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
3055 | sect_offset sect_off |
3056 | = (sect_offset) extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
3057 | type_offset_in_tu | |
3058 | = (cu_offset) extract_unsigned_integer (bytes + 8, 8, | |
3059 | BFD_ENDIAN_LITTLE); | |
1fd400ff TT |
3060 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); |
3061 | bytes += 3 * 8; | |
3062 | ||
52dc124a | 3063 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
1fd400ff | 3064 | struct signatured_type); |
52dc124a | 3065 | sig_type->signature = signature; |
9c541725 | 3066 | sig_type->type_offset_in_tu = type_offset_in_tu; |
3019eac3 | 3067 | sig_type->per_cu.is_debug_types = 1; |
8a0459fd | 3068 | sig_type->per_cu.section = section; |
9c541725 | 3069 | sig_type->per_cu.sect_off = sect_off; |
e3b94546 | 3070 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
52dc124a | 3071 | sig_type->per_cu.v.quick |
1fd400ff TT |
3072 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
3073 | struct dwarf2_per_cu_quick_data); | |
3074 | ||
52dc124a DE |
3075 | slot = htab_find_slot (sig_types_hash, sig_type, INSERT); |
3076 | *slot = sig_type; | |
1fd400ff | 3077 | |
b2bdb8cf | 3078 | dwarf2_per_objfile->all_type_units.push_back (sig_type); |
1fd400ff TT |
3079 | } |
3080 | ||
673bfd45 | 3081 | dwarf2_per_objfile->signatured_types = sig_types_hash; |
1fd400ff TT |
3082 | } |
3083 | ||
927aa2e7 JK |
3084 | /* Create the signatured type hash table from .debug_names. */ |
3085 | ||
3086 | static void | |
3087 | create_signatured_type_table_from_debug_names | |
ed2dc618 | 3088 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
3089 | const mapped_debug_names &map, |
3090 | struct dwarf2_section_info *section, | |
3091 | struct dwarf2_section_info *abbrev_section) | |
3092 | { | |
ed2dc618 SM |
3093 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3094 | ||
927aa2e7 JK |
3095 | dwarf2_read_section (objfile, section); |
3096 | dwarf2_read_section (objfile, abbrev_section); | |
3097 | ||
b2bdb8cf SM |
3098 | gdb_assert (dwarf2_per_objfile->all_type_units.empty ()); |
3099 | dwarf2_per_objfile->all_type_units.reserve (map.tu_count); | |
927aa2e7 JK |
3100 | |
3101 | htab_t sig_types_hash = allocate_signatured_type_table (objfile); | |
3102 | ||
3103 | for (uint32_t i = 0; i < map.tu_count; ++i) | |
3104 | { | |
3105 | struct signatured_type *sig_type; | |
927aa2e7 | 3106 | void **slot; |
927aa2e7 JK |
3107 | |
3108 | sect_offset sect_off | |
3109 | = (sect_offset) (extract_unsigned_integer | |
3110 | (map.tu_table_reordered + i * map.offset_size, | |
3111 | map.offset_size, | |
3112 | map.dwarf5_byte_order)); | |
3113 | ||
3114 | comp_unit_head cu_header; | |
ed2dc618 SM |
3115 | read_and_check_comp_unit_head (dwarf2_per_objfile, &cu_header, section, |
3116 | abbrev_section, | |
927aa2e7 JK |
3117 | section->buffer + to_underlying (sect_off), |
3118 | rcuh_kind::TYPE); | |
3119 | ||
3120 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
3121 | struct signatured_type); | |
3122 | sig_type->signature = cu_header.signature; | |
3123 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
3124 | sig_type->per_cu.is_debug_types = 1; | |
3125 | sig_type->per_cu.section = section; | |
3126 | sig_type->per_cu.sect_off = sect_off; | |
e3b94546 | 3127 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
927aa2e7 JK |
3128 | sig_type->per_cu.v.quick |
3129 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
3130 | struct dwarf2_per_cu_quick_data); | |
3131 | ||
3132 | slot = htab_find_slot (sig_types_hash, sig_type, INSERT); | |
3133 | *slot = sig_type; | |
3134 | ||
b2bdb8cf | 3135 | dwarf2_per_objfile->all_type_units.push_back (sig_type); |
927aa2e7 JK |
3136 | } |
3137 | ||
3138 | dwarf2_per_objfile->signatured_types = sig_types_hash; | |
3139 | } | |
3140 | ||
9291a0cd TT |
3141 | /* Read the address map data from the mapped index, and use it to |
3142 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 3143 | |
9291a0cd | 3144 | static void |
ed2dc618 SM |
3145 | create_addrmap_from_index (struct dwarf2_per_objfile *dwarf2_per_objfile, |
3146 | struct mapped_index *index) | |
9291a0cd | 3147 | { |
ed2dc618 | 3148 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 3149 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9291a0cd | 3150 | const gdb_byte *iter, *end; |
9291a0cd | 3151 | struct addrmap *mutable_map; |
9291a0cd TT |
3152 | CORE_ADDR baseaddr; |
3153 | ||
8268c778 PA |
3154 | auto_obstack temp_obstack; |
3155 | ||
9291a0cd TT |
3156 | mutable_map = addrmap_create_mutable (&temp_obstack); |
3157 | ||
f00a2de2 PA |
3158 | iter = index->address_table.data (); |
3159 | end = iter + index->address_table.size (); | |
9291a0cd TT |
3160 | |
3161 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
3162 | ||
3163 | while (iter < end) | |
3164 | { | |
3165 | ULONGEST hi, lo, cu_index; | |
3166 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
3167 | iter += 8; | |
3168 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
3169 | iter += 8; | |
3170 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
3171 | iter += 4; | |
f652bce2 | 3172 | |
24a55014 | 3173 | if (lo > hi) |
f652bce2 | 3174 | { |
b98664d3 | 3175 | complaint (_(".gdb_index address table has invalid range (%s - %s)"), |
c0cd8254 | 3176 | hex_string (lo), hex_string (hi)); |
24a55014 | 3177 | continue; |
f652bce2 | 3178 | } |
24a55014 | 3179 | |
b76e467d | 3180 | if (cu_index >= dwarf2_per_objfile->all_comp_units.size ()) |
f652bce2 | 3181 | { |
b98664d3 | 3182 | complaint (_(".gdb_index address table has invalid CU number %u"), |
f652bce2 | 3183 | (unsigned) cu_index); |
24a55014 | 3184 | continue; |
f652bce2 | 3185 | } |
24a55014 | 3186 | |
79748972 TT |
3187 | lo = gdbarch_adjust_dwarf2_addr (gdbarch, lo + baseaddr) - baseaddr; |
3188 | hi = gdbarch_adjust_dwarf2_addr (gdbarch, hi + baseaddr) - baseaddr; | |
ed2dc618 | 3189 | addrmap_set_empty (mutable_map, lo, hi - 1, |
ff4c9fec | 3190 | dwarf2_per_objfile->get_cu (cu_index)); |
9291a0cd TT |
3191 | } |
3192 | ||
d320c2b5 | 3193 | objfile->partial_symtabs->psymtabs_addrmap |
5923a04c | 3194 | = addrmap_create_fixed (mutable_map, objfile->partial_symtabs->obstack ()); |
9291a0cd TT |
3195 | } |
3196 | ||
927aa2e7 JK |
3197 | /* Read the address map data from DWARF-5 .debug_aranges, and use it to |
3198 | populate the objfile's psymtabs_addrmap. */ | |
3199 | ||
3200 | static void | |
ed2dc618 | 3201 | create_addrmap_from_aranges (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
3202 | struct dwarf2_section_info *section) |
3203 | { | |
ed2dc618 | 3204 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
927aa2e7 JK |
3205 | bfd *abfd = objfile->obfd; |
3206 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
3207 | const CORE_ADDR baseaddr = ANOFFSET (objfile->section_offsets, | |
3208 | SECT_OFF_TEXT (objfile)); | |
3209 | ||
3210 | auto_obstack temp_obstack; | |
3211 | addrmap *mutable_map = addrmap_create_mutable (&temp_obstack); | |
3212 | ||
3213 | std::unordered_map<sect_offset, | |
3214 | dwarf2_per_cu_data *, | |
3215 | gdb::hash_enum<sect_offset>> | |
3216 | debug_info_offset_to_per_cu; | |
b76e467d | 3217 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 3218 | { |
927aa2e7 JK |
3219 | const auto insertpair |
3220 | = debug_info_offset_to_per_cu.emplace (per_cu->sect_off, per_cu); | |
3221 | if (!insertpair.second) | |
3222 | { | |
3223 | warning (_("Section .debug_aranges in %s has duplicate " | |
9d8780f0 SM |
3224 | "debug_info_offset %s, ignoring .debug_aranges."), |
3225 | objfile_name (objfile), sect_offset_str (per_cu->sect_off)); | |
927aa2e7 JK |
3226 | return; |
3227 | } | |
3228 | } | |
3229 | ||
3230 | dwarf2_read_section (objfile, section); | |
3231 | ||
3232 | const bfd_endian dwarf5_byte_order = gdbarch_byte_order (gdbarch); | |
3233 | ||
3234 | const gdb_byte *addr = section->buffer; | |
3235 | ||
3236 | while (addr < section->buffer + section->size) | |
3237 | { | |
3238 | const gdb_byte *const entry_addr = addr; | |
3239 | unsigned int bytes_read; | |
3240 | ||
3241 | const LONGEST entry_length = read_initial_length (abfd, addr, | |
3242 | &bytes_read); | |
3243 | addr += bytes_read; | |
3244 | ||
3245 | const gdb_byte *const entry_end = addr + entry_length; | |
3246 | const bool dwarf5_is_dwarf64 = bytes_read != 4; | |
3247 | const uint8_t offset_size = dwarf5_is_dwarf64 ? 8 : 4; | |
3248 | if (addr + entry_length > section->buffer + section->size) | |
3249 | { | |
3250 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3251 | "length %s exceeds section length %s, " | |
3252 | "ignoring .debug_aranges."), | |
3253 | objfile_name (objfile), entry_addr - section->buffer, | |
3254 | plongest (bytes_read + entry_length), | |
3255 | pulongest (section->size)); | |
3256 | return; | |
3257 | } | |
3258 | ||
3259 | /* The version number. */ | |
3260 | const uint16_t version = read_2_bytes (abfd, addr); | |
3261 | addr += 2; | |
3262 | if (version != 2) | |
3263 | { | |
3264 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3265 | "has unsupported version %d, ignoring .debug_aranges."), | |
3266 | objfile_name (objfile), entry_addr - section->buffer, | |
3267 | version); | |
3268 | return; | |
3269 | } | |
3270 | ||
3271 | const uint64_t debug_info_offset | |
3272 | = extract_unsigned_integer (addr, offset_size, dwarf5_byte_order); | |
3273 | addr += offset_size; | |
3274 | const auto per_cu_it | |
3275 | = debug_info_offset_to_per_cu.find (sect_offset (debug_info_offset)); | |
3276 | if (per_cu_it == debug_info_offset_to_per_cu.cend ()) | |
3277 | { | |
3278 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3279 | "debug_info_offset %s does not exists, " | |
3280 | "ignoring .debug_aranges."), | |
3281 | objfile_name (objfile), entry_addr - section->buffer, | |
3282 | pulongest (debug_info_offset)); | |
3283 | return; | |
3284 | } | |
3285 | dwarf2_per_cu_data *const per_cu = per_cu_it->second; | |
3286 | ||
3287 | const uint8_t address_size = *addr++; | |
3288 | if (address_size < 1 || address_size > 8) | |
3289 | { | |
3290 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3291 | "address_size %u is invalid, ignoring .debug_aranges."), | |
3292 | objfile_name (objfile), entry_addr - section->buffer, | |
3293 | address_size); | |
3294 | return; | |
3295 | } | |
3296 | ||
3297 | const uint8_t segment_selector_size = *addr++; | |
3298 | if (segment_selector_size != 0) | |
3299 | { | |
3300 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3301 | "segment_selector_size %u is not supported, " | |
3302 | "ignoring .debug_aranges."), | |
3303 | objfile_name (objfile), entry_addr - section->buffer, | |
3304 | segment_selector_size); | |
3305 | return; | |
3306 | } | |
3307 | ||
3308 | /* Must pad to an alignment boundary that is twice the address | |
3309 | size. It is undocumented by the DWARF standard but GCC does | |
3310 | use it. */ | |
3311 | for (size_t padding = ((-(addr - section->buffer)) | |
3312 | & (2 * address_size - 1)); | |
3313 | padding > 0; padding--) | |
3314 | if (*addr++ != 0) | |
3315 | { | |
3316 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3317 | "padding is not zero, ignoring .debug_aranges."), | |
3318 | objfile_name (objfile), entry_addr - section->buffer); | |
3319 | return; | |
3320 | } | |
3321 | ||
3322 | for (;;) | |
3323 | { | |
3324 | if (addr + 2 * address_size > entry_end) | |
3325 | { | |
3326 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3327 | "address list is not properly terminated, " | |
3328 | "ignoring .debug_aranges."), | |
3329 | objfile_name (objfile), entry_addr - section->buffer); | |
3330 | return; | |
3331 | } | |
3332 | ULONGEST start = extract_unsigned_integer (addr, address_size, | |
3333 | dwarf5_byte_order); | |
3334 | addr += address_size; | |
3335 | ULONGEST length = extract_unsigned_integer (addr, address_size, | |
3336 | dwarf5_byte_order); | |
3337 | addr += address_size; | |
3338 | if (start == 0 && length == 0) | |
3339 | break; | |
3340 | if (start == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
3341 | { | |
3342 | /* Symbol was eliminated due to a COMDAT group. */ | |
3343 | continue; | |
3344 | } | |
3345 | ULONGEST end = start + length; | |
79748972 TT |
3346 | start = (gdbarch_adjust_dwarf2_addr (gdbarch, start + baseaddr) |
3347 | - baseaddr); | |
3348 | end = (gdbarch_adjust_dwarf2_addr (gdbarch, end + baseaddr) | |
3349 | - baseaddr); | |
927aa2e7 JK |
3350 | addrmap_set_empty (mutable_map, start, end - 1, per_cu); |
3351 | } | |
3352 | } | |
3353 | ||
d320c2b5 | 3354 | objfile->partial_symtabs->psymtabs_addrmap |
5923a04c | 3355 | = addrmap_create_fixed (mutable_map, objfile->partial_symtabs->obstack ()); |
927aa2e7 JK |
3356 | } |
3357 | ||
9291a0cd TT |
3358 | /* Find a slot in the mapped index INDEX for the object named NAME. |
3359 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
109483d9 PA |
3360 | constant pool and return true. If NAME cannot be found, return |
3361 | false. */ | |
2fdf6df6 | 3362 | |
109483d9 | 3363 | static bool |
9291a0cd TT |
3364 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, |
3365 | offset_type **vec_out) | |
3366 | { | |
0cf03b49 | 3367 | offset_type hash; |
9291a0cd | 3368 | offset_type slot, step; |
559a7a62 | 3369 | int (*cmp) (const char *, const char *); |
9291a0cd | 3370 | |
791afaa2 | 3371 | gdb::unique_xmalloc_ptr<char> without_params; |
0cf03b49 | 3372 | if (current_language->la_language == language_cplus |
45280282 IB |
3373 | || current_language->la_language == language_fortran |
3374 | || current_language->la_language == language_d) | |
0cf03b49 JK |
3375 | { |
3376 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
3377 | not contain any. */ | |
a8719064 | 3378 | |
72998fb3 | 3379 | if (strchr (name, '(') != NULL) |
0cf03b49 | 3380 | { |
109483d9 | 3381 | without_params = cp_remove_params (name); |
0cf03b49 | 3382 | |
72998fb3 | 3383 | if (without_params != NULL) |
791afaa2 | 3384 | name = without_params.get (); |
0cf03b49 JK |
3385 | } |
3386 | } | |
3387 | ||
559a7a62 | 3388 | /* Index version 4 did not support case insensitive searches. But the |
feea76c2 | 3389 | indices for case insensitive languages are built in lowercase, therefore |
559a7a62 JK |
3390 | simulate our NAME being searched is also lowercased. */ |
3391 | hash = mapped_index_string_hash ((index->version == 4 | |
3392 | && case_sensitivity == case_sensitive_off | |
3393 | ? 5 : index->version), | |
3394 | name); | |
3395 | ||
f00a2de2 PA |
3396 | slot = hash & (index->symbol_table.size () - 1); |
3397 | step = ((hash * 17) & (index->symbol_table.size () - 1)) | 1; | |
559a7a62 | 3398 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
3399 | |
3400 | for (;;) | |
3401 | { | |
9291a0cd | 3402 | const char *str; |
f00a2de2 PA |
3403 | |
3404 | const auto &bucket = index->symbol_table[slot]; | |
3405 | if (bucket.name == 0 && bucket.vec == 0) | |
109483d9 | 3406 | return false; |
9291a0cd | 3407 | |
f00a2de2 | 3408 | str = index->constant_pool + MAYBE_SWAP (bucket.name); |
559a7a62 | 3409 | if (!cmp (name, str)) |
9291a0cd TT |
3410 | { |
3411 | *vec_out = (offset_type *) (index->constant_pool | |
f00a2de2 | 3412 | + MAYBE_SWAP (bucket.vec)); |
109483d9 | 3413 | return true; |
9291a0cd TT |
3414 | } |
3415 | ||
f00a2de2 | 3416 | slot = (slot + step) & (index->symbol_table.size () - 1); |
9291a0cd TT |
3417 | } |
3418 | } | |
3419 | ||
4485a1c1 SM |
3420 | /* A helper function that reads the .gdb_index from BUFFER and fills |
3421 | in MAP. FILENAME is the name of the file containing the data; | |
d33bc52e | 3422 | it is used for error reporting. DEPRECATED_OK is true if it is |
2ec9a5e0 TT |
3423 | ok to use deprecated sections. |
3424 | ||
3425 | CU_LIST, CU_LIST_ELEMENTS, TYPES_LIST, and TYPES_LIST_ELEMENTS are | |
3426 | out parameters that are filled in with information about the CU and | |
3427 | TU lists in the section. | |
3428 | ||
4485a1c1 | 3429 | Returns true if all went well, false otherwise. */ |
2fdf6df6 | 3430 | |
d33bc52e | 3431 | static bool |
4485a1c1 SM |
3432 | read_gdb_index_from_buffer (struct objfile *objfile, |
3433 | const char *filename, | |
3434 | bool deprecated_ok, | |
3435 | gdb::array_view<const gdb_byte> buffer, | |
3436 | struct mapped_index *map, | |
3437 | const gdb_byte **cu_list, | |
3438 | offset_type *cu_list_elements, | |
3439 | const gdb_byte **types_list, | |
3440 | offset_type *types_list_elements) | |
3441 | { | |
3442 | const gdb_byte *addr = &buffer[0]; | |
82430852 | 3443 | |
9291a0cd | 3444 | /* Version check. */ |
4485a1c1 | 3445 | offset_type 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 | 3497 | |
4485a1c1 | 3498 | offset_type *metadata = (offset_type *) (addr + sizeof (offset_type)); |
1fd400ff | 3499 | |
4485a1c1 | 3500 | int 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 | ||
4485a1c1 SM |
3531 | /* Callback types for dwarf2_read_gdb_index. */ |
3532 | ||
3533 | typedef gdb::function_view | |
3534 | <gdb::array_view<const gdb_byte>(objfile *, dwarf2_per_objfile *)> | |
3535 | get_gdb_index_contents_ftype; | |
3536 | typedef gdb::function_view | |
3537 | <gdb::array_view<const gdb_byte>(objfile *, dwz_file *)> | |
3538 | get_gdb_index_contents_dwz_ftype; | |
3539 | ||
927aa2e7 | 3540 | /* Read .gdb_index. If everything went ok, initialize the "quick" |
2ec9a5e0 TT |
3541 | elements of all the CUs and return 1. Otherwise, return 0. */ |
3542 | ||
3543 | static int | |
4485a1c1 SM |
3544 | dwarf2_read_gdb_index |
3545 | (struct dwarf2_per_objfile *dwarf2_per_objfile, | |
3546 | get_gdb_index_contents_ftype get_gdb_index_contents, | |
3547 | get_gdb_index_contents_dwz_ftype get_gdb_index_contents_dwz) | |
2ec9a5e0 | 3548 | { |
2ec9a5e0 TT |
3549 | const gdb_byte *cu_list, *types_list, *dwz_list = NULL; |
3550 | offset_type cu_list_elements, types_list_elements, dwz_list_elements = 0; | |
4db1a1dc | 3551 | struct dwz_file *dwz; |
12359b5e | 3552 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
2ec9a5e0 | 3553 | |
4485a1c1 SM |
3554 | gdb::array_view<const gdb_byte> main_index_contents |
3555 | = get_gdb_index_contents (objfile, dwarf2_per_objfile); | |
3556 | ||
3557 | if (main_index_contents.empty ()) | |
3558 | return 0; | |
3559 | ||
3063847f | 3560 | std::unique_ptr<struct mapped_index> map (new struct mapped_index); |
4485a1c1 SM |
3561 | if (!read_gdb_index_from_buffer (objfile, objfile_name (objfile), |
3562 | use_deprecated_index_sections, | |
3563 | main_index_contents, map.get (), &cu_list, | |
3564 | &cu_list_elements, &types_list, | |
3565 | &types_list_elements)) | |
2ec9a5e0 TT |
3566 | return 0; |
3567 | ||
0fefef59 | 3568 | /* Don't use the index if it's empty. */ |
3063847f | 3569 | if (map->symbol_table.empty ()) |
0fefef59 DE |
3570 | return 0; |
3571 | ||
2ec9a5e0 TT |
3572 | /* If there is a .dwz file, read it so we can get its CU list as |
3573 | well. */ | |
ed2dc618 | 3574 | dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
4db1a1dc | 3575 | if (dwz != NULL) |
2ec9a5e0 | 3576 | { |
2ec9a5e0 TT |
3577 | struct mapped_index dwz_map; |
3578 | const gdb_byte *dwz_types_ignore; | |
3579 | offset_type dwz_types_elements_ignore; | |
3580 | ||
4485a1c1 SM |
3581 | gdb::array_view<const gdb_byte> dwz_index_content |
3582 | = get_gdb_index_contents_dwz (objfile, dwz); | |
3583 | ||
3584 | if (dwz_index_content.empty ()) | |
3585 | return 0; | |
3586 | ||
3587 | if (!read_gdb_index_from_buffer (objfile, | |
3588 | bfd_get_filename (dwz->dwz_bfd), 1, | |
3589 | dwz_index_content, &dwz_map, | |
3590 | &dwz_list, &dwz_list_elements, | |
3591 | &dwz_types_ignore, | |
3592 | &dwz_types_elements_ignore)) | |
2ec9a5e0 TT |
3593 | { |
3594 | warning (_("could not read '.gdb_index' section from %s; skipping"), | |
3595 | bfd_get_filename (dwz->dwz_bfd)); | |
3596 | return 0; | |
3597 | } | |
3598 | } | |
3599 | ||
12359b5e SM |
3600 | create_cus_from_index (dwarf2_per_objfile, cu_list, cu_list_elements, |
3601 | dwz_list, dwz_list_elements); | |
1fd400ff | 3602 | |
8b70b953 TT |
3603 | if (types_list_elements) |
3604 | { | |
3605 | struct dwarf2_section_info *section; | |
3606 | ||
3607 | /* We can only handle a single .debug_types when we have an | |
3608 | index. */ | |
3609 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) != 1) | |
3610 | return 0; | |
3611 | ||
3612 | section = VEC_index (dwarf2_section_info_def, | |
3613 | dwarf2_per_objfile->types, 0); | |
3614 | ||
12359b5e SM |
3615 | create_signatured_type_table_from_index (dwarf2_per_objfile, section, |
3616 | types_list, types_list_elements); | |
8b70b953 | 3617 | } |
9291a0cd | 3618 | |
3063847f | 3619 | create_addrmap_from_index (dwarf2_per_objfile, map.get ()); |
9291a0cd | 3620 | |
3063847f | 3621 | dwarf2_per_objfile->index_table = std::move (map); |
9291a0cd | 3622 | dwarf2_per_objfile->using_index = 1; |
7b9f3c50 | 3623 | dwarf2_per_objfile->quick_file_names_table = |
b76e467d | 3624 | create_quick_file_names_table (dwarf2_per_objfile->all_comp_units.size ()); |
9291a0cd TT |
3625 | |
3626 | return 1; | |
3627 | } | |
3628 | ||
dee91e82 | 3629 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 3630 | |
dee91e82 DE |
3631 | static void |
3632 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
d521ce57 | 3633 | const gdb_byte *info_ptr, |
dee91e82 DE |
3634 | struct die_info *comp_unit_die, |
3635 | int has_children, | |
3636 | void *data) | |
9291a0cd | 3637 | { |
dee91e82 | 3638 | struct dwarf2_cu *cu = reader->cu; |
ed2dc618 | 3639 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; |
518817b3 SM |
3640 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3641 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 3642 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
094b34ac | 3643 | struct dwarf2_per_cu_data *lh_cu; |
9291a0cd | 3644 | struct attribute *attr; |
dee91e82 | 3645 | int i; |
7b9f3c50 DE |
3646 | void **slot; |
3647 | struct quick_file_names *qfn; | |
9291a0cd | 3648 | |
0186c6a7 DE |
3649 | gdb_assert (! this_cu->is_debug_types); |
3650 | ||
07261596 TT |
3651 | /* Our callers never want to match partial units -- instead they |
3652 | will match the enclosing full CU. */ | |
3653 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
3654 | { | |
3655 | this_cu->v.quick->no_file_data = 1; | |
3656 | return; | |
3657 | } | |
3658 | ||
0186c6a7 | 3659 | lh_cu = this_cu; |
7b9f3c50 | 3660 | slot = NULL; |
dee91e82 | 3661 | |
fff8551c | 3662 | line_header_up lh; |
9c541725 | 3663 | sect_offset line_offset {}; |
fff8551c | 3664 | |
dee91e82 | 3665 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); |
9291a0cd TT |
3666 | if (attr) |
3667 | { | |
7b9f3c50 DE |
3668 | struct quick_file_names find_entry; |
3669 | ||
9c541725 | 3670 | line_offset = (sect_offset) DW_UNSND (attr); |
7b9f3c50 DE |
3671 | |
3672 | /* We may have already read in this line header (TU line header sharing). | |
3673 | If we have we're done. */ | |
094b34ac | 3674 | find_entry.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3675 | find_entry.hash.line_sect_off = line_offset; |
7b9f3c50 DE |
3676 | slot = htab_find_slot (dwarf2_per_objfile->quick_file_names_table, |
3677 | &find_entry, INSERT); | |
3678 | if (*slot != NULL) | |
3679 | { | |
9a3c8263 | 3680 | lh_cu->v.quick->file_names = (struct quick_file_names *) *slot; |
dee91e82 | 3681 | return; |
7b9f3c50 DE |
3682 | } |
3683 | ||
3019eac3 | 3684 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
3685 | } |
3686 | if (lh == NULL) | |
3687 | { | |
094b34ac | 3688 | lh_cu->v.quick->no_file_data = 1; |
dee91e82 | 3689 | return; |
9291a0cd TT |
3690 | } |
3691 | ||
8d749320 | 3692 | qfn = XOBNEW (&objfile->objfile_obstack, struct quick_file_names); |
094b34ac | 3693 | qfn->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3694 | qfn->hash.line_sect_off = line_offset; |
7b9f3c50 DE |
3695 | gdb_assert (slot != NULL); |
3696 | *slot = qfn; | |
9291a0cd | 3697 | |
d721ba37 | 3698 | file_and_directory fnd = find_file_and_directory (comp_unit_die, cu); |
9291a0cd | 3699 | |
fff8551c | 3700 | qfn->num_file_names = lh->file_names.size (); |
8d749320 | 3701 | qfn->file_names = |
fff8551c PA |
3702 | XOBNEWVEC (&objfile->objfile_obstack, const char *, lh->file_names.size ()); |
3703 | for (i = 0; i < lh->file_names.size (); ++i) | |
3704 | qfn->file_names[i] = file_full_name (i + 1, lh.get (), fnd.comp_dir); | |
7b9f3c50 | 3705 | qfn->real_names = NULL; |
9291a0cd | 3706 | |
094b34ac | 3707 | lh_cu->v.quick->file_names = qfn; |
dee91e82 DE |
3708 | } |
3709 | ||
3710 | /* A helper for the "quick" functions which attempts to read the line | |
3711 | table for THIS_CU. */ | |
3712 | ||
3713 | static struct quick_file_names * | |
e4a48d9d | 3714 | dw2_get_file_names (struct dwarf2_per_cu_data *this_cu) |
dee91e82 | 3715 | { |
0186c6a7 DE |
3716 | /* This should never be called for TUs. */ |
3717 | gdb_assert (! this_cu->is_debug_types); | |
3718 | /* Nor type unit groups. */ | |
3719 | gdb_assert (! IS_TYPE_UNIT_GROUP (this_cu)); | |
f4dc4d17 | 3720 | |
dee91e82 DE |
3721 | if (this_cu->v.quick->file_names != NULL) |
3722 | return this_cu->v.quick->file_names; | |
3723 | /* If we know there is no line data, no point in looking again. */ | |
3724 | if (this_cu->v.quick->no_file_data) | |
3725 | return NULL; | |
3726 | ||
0186c6a7 | 3727 | init_cutu_and_read_dies_simple (this_cu, dw2_get_file_names_reader, NULL); |
dee91e82 DE |
3728 | |
3729 | if (this_cu->v.quick->no_file_data) | |
3730 | return NULL; | |
3731 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
3732 | } |
3733 | ||
3734 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 3735 | real path for a given file name from the line table. */ |
2fdf6df6 | 3736 | |
9291a0cd | 3737 | static const char * |
7b9f3c50 DE |
3738 | dw2_get_real_path (struct objfile *objfile, |
3739 | struct quick_file_names *qfn, int index) | |
9291a0cd | 3740 | { |
7b9f3c50 DE |
3741 | if (qfn->real_names == NULL) |
3742 | qfn->real_names = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
26f2dc30 | 3743 | qfn->num_file_names, const char *); |
9291a0cd | 3744 | |
7b9f3c50 | 3745 | if (qfn->real_names[index] == NULL) |
14278e1f | 3746 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]).release (); |
9291a0cd | 3747 | |
7b9f3c50 | 3748 | return qfn->real_names[index]; |
9291a0cd TT |
3749 | } |
3750 | ||
3751 | static struct symtab * | |
3752 | dw2_find_last_source_symtab (struct objfile *objfile) | |
3753 | { | |
ed2dc618 SM |
3754 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3755 | = get_dwarf2_per_objfile (objfile); | |
b76e467d | 3756 | dwarf2_per_cu_data *dwarf_cu = dwarf2_per_objfile->all_comp_units.back (); |
58f0c718 | 3757 | compunit_symtab *cust = dw2_instantiate_symtab (dwarf_cu, false); |
ae2de4f8 | 3758 | |
43f3e411 DE |
3759 | if (cust == NULL) |
3760 | return NULL; | |
ed2dc618 | 3761 | |
43f3e411 | 3762 | return compunit_primary_filetab (cust); |
9291a0cd TT |
3763 | } |
3764 | ||
7b9f3c50 DE |
3765 | /* Traversal function for dw2_forget_cached_source_info. */ |
3766 | ||
3767 | static int | |
3768 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 3769 | { |
7b9f3c50 | 3770 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 3771 | |
7b9f3c50 | 3772 | if (file_data->real_names) |
9291a0cd | 3773 | { |
7b9f3c50 | 3774 | int i; |
9291a0cd | 3775 | |
7b9f3c50 | 3776 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 3777 | { |
7b9f3c50 DE |
3778 | xfree ((void*) file_data->real_names[i]); |
3779 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
3780 | } |
3781 | } | |
7b9f3c50 DE |
3782 | |
3783 | return 1; | |
3784 | } | |
3785 | ||
3786 | static void | |
3787 | dw2_forget_cached_source_info (struct objfile *objfile) | |
3788 | { | |
ed2dc618 SM |
3789 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3790 | = get_dwarf2_per_objfile (objfile); | |
7b9f3c50 DE |
3791 | |
3792 | htab_traverse_noresize (dwarf2_per_objfile->quick_file_names_table, | |
3793 | dw2_free_cached_file_names, NULL); | |
9291a0cd TT |
3794 | } |
3795 | ||
f8eba3c6 TT |
3796 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
3797 | the symtabs and calls the iterator. */ | |
3798 | ||
3799 | static int | |
3800 | dw2_map_expand_apply (struct objfile *objfile, | |
3801 | struct dwarf2_per_cu_data *per_cu, | |
f5b95b50 | 3802 | const char *name, const char *real_path, |
14bc53a8 | 3803 | gdb::function_view<bool (symtab *)> callback) |
f8eba3c6 | 3804 | { |
43f3e411 | 3805 | struct compunit_symtab *last_made = objfile->compunit_symtabs; |
f8eba3c6 TT |
3806 | |
3807 | /* Don't visit already-expanded CUs. */ | |
43f3e411 | 3808 | if (per_cu->v.quick->compunit_symtab) |
f8eba3c6 TT |
3809 | return 0; |
3810 | ||
3811 | /* This may expand more than one symtab, and we want to iterate over | |
3812 | all of them. */ | |
58f0c718 | 3813 | dw2_instantiate_symtab (per_cu, false); |
f8eba3c6 | 3814 | |
14bc53a8 PA |
3815 | return iterate_over_some_symtabs (name, real_path, objfile->compunit_symtabs, |
3816 | last_made, callback); | |
f8eba3c6 TT |
3817 | } |
3818 | ||
3819 | /* Implementation of the map_symtabs_matching_filename method. */ | |
3820 | ||
14bc53a8 PA |
3821 | static bool |
3822 | dw2_map_symtabs_matching_filename | |
3823 | (struct objfile *objfile, const char *name, const char *real_path, | |
3824 | gdb::function_view<bool (symtab *)> callback) | |
9291a0cd | 3825 | { |
c011a4f4 | 3826 | const char *name_basename = lbasename (name); |
ed2dc618 SM |
3827 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3828 | = get_dwarf2_per_objfile (objfile); | |
ae2de4f8 | 3829 | |
848e3e78 DE |
3830 | /* The rule is CUs specify all the files, including those used by |
3831 | any TU, so there's no need to scan TUs here. */ | |
f4dc4d17 | 3832 | |
b76e467d | 3833 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
9291a0cd | 3834 | { |
3d7bb9d9 | 3835 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 3836 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
3837 | continue; |
3838 | ||
b76e467d | 3839 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 3840 | if (file_data == NULL) |
9291a0cd TT |
3841 | continue; |
3842 | ||
b76e467d | 3843 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3844 | { |
7b9f3c50 | 3845 | const char *this_name = file_data->file_names[j]; |
da235a7c | 3846 | const char *this_real_name; |
9291a0cd | 3847 | |
af529f8f | 3848 | if (compare_filenames_for_search (this_name, name)) |
9291a0cd | 3849 | { |
f5b95b50 | 3850 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3851 | callback)) |
3852 | return true; | |
288e77a7 | 3853 | continue; |
4aac40c8 | 3854 | } |
9291a0cd | 3855 | |
c011a4f4 DE |
3856 | /* Before we invoke realpath, which can get expensive when many |
3857 | files are involved, do a quick comparison of the basenames. */ | |
3858 | if (! basenames_may_differ | |
3859 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
3860 | continue; | |
3861 | ||
da235a7c JK |
3862 | this_real_name = dw2_get_real_path (objfile, file_data, j); |
3863 | if (compare_filenames_for_search (this_real_name, name)) | |
9291a0cd | 3864 | { |
da235a7c | 3865 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3866 | callback)) |
3867 | return true; | |
288e77a7 | 3868 | continue; |
da235a7c | 3869 | } |
9291a0cd | 3870 | |
da235a7c JK |
3871 | if (real_path != NULL) |
3872 | { | |
af529f8f JK |
3873 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); |
3874 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
7b9f3c50 | 3875 | if (this_real_name != NULL |
af529f8f | 3876 | && FILENAME_CMP (real_path, this_real_name) == 0) |
9291a0cd | 3877 | { |
f5b95b50 | 3878 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3879 | callback)) |
3880 | return true; | |
288e77a7 | 3881 | continue; |
9291a0cd TT |
3882 | } |
3883 | } | |
3884 | } | |
3885 | } | |
3886 | ||
14bc53a8 | 3887 | return false; |
9291a0cd TT |
3888 | } |
3889 | ||
da51c347 DE |
3890 | /* Struct used to manage iterating over all CUs looking for a symbol. */ |
3891 | ||
3892 | struct dw2_symtab_iterator | |
9291a0cd | 3893 | { |
ed2dc618 SM |
3894 | /* The dwarf2_per_objfile owning the CUs we are iterating on. */ |
3895 | struct dwarf2_per_objfile *dwarf2_per_objfile; | |
da51c347 DE |
3896 | /* If non-zero, only look for symbols that match BLOCK_INDEX. */ |
3897 | int want_specific_block; | |
3898 | /* One of GLOBAL_BLOCK or STATIC_BLOCK. | |
3899 | Unused if !WANT_SPECIFIC_BLOCK. */ | |
3900 | int block_index; | |
3901 | /* The kind of symbol we're looking for. */ | |
3902 | domain_enum domain; | |
3903 | /* The list of CUs from the index entry of the symbol, | |
3904 | or NULL if not found. */ | |
3905 | offset_type *vec; | |
3906 | /* The next element in VEC to look at. */ | |
3907 | int next; | |
3908 | /* The number of elements in VEC, or zero if there is no match. */ | |
3909 | int length; | |
8943b874 DE |
3910 | /* Have we seen a global version of the symbol? |
3911 | If so we can ignore all further global instances. | |
3912 | This is to work around gold/15646, inefficient gold-generated | |
3913 | indices. */ | |
3914 | int global_seen; | |
da51c347 | 3915 | }; |
9291a0cd | 3916 | |
da51c347 DE |
3917 | /* Initialize the index symtab iterator ITER. |
3918 | If WANT_SPECIFIC_BLOCK is non-zero, only look for symbols | |
3919 | in block BLOCK_INDEX. Otherwise BLOCK_INDEX is ignored. */ | |
2fdf6df6 | 3920 | |
9291a0cd | 3921 | static void |
da51c347 | 3922 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, |
ed2dc618 | 3923 | struct dwarf2_per_objfile *dwarf2_per_objfile, |
da51c347 DE |
3924 | int want_specific_block, |
3925 | int block_index, | |
3926 | domain_enum domain, | |
3927 | const char *name) | |
3928 | { | |
ed2dc618 | 3929 | iter->dwarf2_per_objfile = dwarf2_per_objfile; |
da51c347 DE |
3930 | iter->want_specific_block = want_specific_block; |
3931 | iter->block_index = block_index; | |
3932 | iter->domain = domain; | |
3933 | iter->next = 0; | |
8943b874 | 3934 | iter->global_seen = 0; |
da51c347 | 3935 | |
3063847f | 3936 | mapped_index *index = dwarf2_per_objfile->index_table.get (); |
ed2dc618 SM |
3937 | |
3938 | /* index is NULL if OBJF_READNOW. */ | |
3939 | if (index != NULL && find_slot_in_mapped_hash (index, name, &iter->vec)) | |
da51c347 DE |
3940 | iter->length = MAYBE_SWAP (*iter->vec); |
3941 | else | |
3942 | { | |
3943 | iter->vec = NULL; | |
3944 | iter->length = 0; | |
3945 | } | |
3946 | } | |
3947 | ||
3948 | /* Return the next matching CU or NULL if there are no more. */ | |
3949 | ||
3950 | static struct dwarf2_per_cu_data * | |
3951 | dw2_symtab_iter_next (struct dw2_symtab_iterator *iter) | |
3952 | { | |
ed2dc618 SM |
3953 | struct dwarf2_per_objfile *dwarf2_per_objfile = iter->dwarf2_per_objfile; |
3954 | ||
da51c347 DE |
3955 | for ( ; iter->next < iter->length; ++iter->next) |
3956 | { | |
3957 | offset_type cu_index_and_attrs = | |
3958 | MAYBE_SWAP (iter->vec[iter->next + 1]); | |
3959 | offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
da51c347 DE |
3960 | int want_static = iter->block_index != GLOBAL_BLOCK; |
3961 | /* This value is only valid for index versions >= 7. */ | |
3962 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
3963 | gdb_index_symbol_kind symbol_kind = | |
3964 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3965 | /* Only check the symbol attributes if they're present. | |
3966 | Indices prior to version 7 don't record them, | |
3967 | and indices >= 7 may elide them for certain symbols | |
3968 | (gold does this). */ | |
3969 | int attrs_valid = | |
ed2dc618 | 3970 | (dwarf2_per_objfile->index_table->version >= 7 |
da51c347 DE |
3971 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); |
3972 | ||
3190f0c6 | 3973 | /* Don't crash on bad data. */ |
b76e467d | 3974 | if (cu_index >= (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 3975 | + dwarf2_per_objfile->all_type_units.size ())) |
3190f0c6 | 3976 | { |
b98664d3 | 3977 | complaint (_(".gdb_index entry has bad CU index" |
4262abfb JK |
3978 | " [in module %s]"), |
3979 | objfile_name (dwarf2_per_objfile->objfile)); | |
3190f0c6 DE |
3980 | continue; |
3981 | } | |
3982 | ||
ff4c9fec | 3983 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (cu_index); |
3190f0c6 | 3984 | |
da51c347 | 3985 | /* Skip if already read in. */ |
43f3e411 | 3986 | if (per_cu->v.quick->compunit_symtab) |
da51c347 DE |
3987 | continue; |
3988 | ||
8943b874 DE |
3989 | /* Check static vs global. */ |
3990 | if (attrs_valid) | |
3991 | { | |
3992 | if (iter->want_specific_block | |
3993 | && want_static != is_static) | |
3994 | continue; | |
3995 | /* Work around gold/15646. */ | |
3996 | if (!is_static && iter->global_seen) | |
3997 | continue; | |
3998 | if (!is_static) | |
3999 | iter->global_seen = 1; | |
4000 | } | |
da51c347 DE |
4001 | |
4002 | /* Only check the symbol's kind if it has one. */ | |
4003 | if (attrs_valid) | |
4004 | { | |
4005 | switch (iter->domain) | |
4006 | { | |
4007 | case VAR_DOMAIN: | |
4008 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
4009 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
4010 | /* Some types are also in VAR_DOMAIN. */ | |
4011 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
4012 | continue; | |
4013 | break; | |
4014 | case STRUCT_DOMAIN: | |
4015 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
4016 | continue; | |
4017 | break; | |
4018 | case LABEL_DOMAIN: | |
4019 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
4020 | continue; | |
4021 | break; | |
4022 | default: | |
4023 | break; | |
4024 | } | |
4025 | } | |
4026 | ||
4027 | ++iter->next; | |
4028 | return per_cu; | |
4029 | } | |
4030 | ||
4031 | return NULL; | |
4032 | } | |
4033 | ||
43f3e411 | 4034 | static struct compunit_symtab * |
da51c347 DE |
4035 | dw2_lookup_symbol (struct objfile *objfile, int block_index, |
4036 | const char *name, domain_enum domain) | |
9291a0cd | 4037 | { |
43f3e411 | 4038 | struct compunit_symtab *stab_best = NULL; |
ed2dc618 SM |
4039 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4040 | = get_dwarf2_per_objfile (objfile); | |
9291a0cd | 4041 | |
b5ec771e PA |
4042 | lookup_name_info lookup_name (name, symbol_name_match_type::FULL); |
4043 | ||
ed2dc618 SM |
4044 | struct dw2_symtab_iterator iter; |
4045 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 4046 | |
ed2dc618 | 4047 | dw2_symtab_iter_init (&iter, dwarf2_per_objfile, 1, block_index, domain, name); |
9291a0cd | 4048 | |
ed2dc618 SM |
4049 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
4050 | { | |
4051 | struct symbol *sym, *with_opaque = NULL; | |
58f0c718 | 4052 | struct compunit_symtab *stab = dw2_instantiate_symtab (per_cu, false); |
ed2dc618 SM |
4053 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
4054 | struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); | |
da51c347 | 4055 | |
ed2dc618 SM |
4056 | sym = block_find_symbol (block, name, domain, |
4057 | block_find_non_opaque_type_preferred, | |
4058 | &with_opaque); | |
b2e2f908 | 4059 | |
ed2dc618 SM |
4060 | /* Some caution must be observed with overloaded functions |
4061 | and methods, since the index will not contain any overload | |
4062 | information (but NAME might contain it). */ | |
da51c347 | 4063 | |
ed2dc618 SM |
4064 | if (sym != NULL |
4065 | && SYMBOL_MATCHES_SEARCH_NAME (sym, lookup_name)) | |
4066 | return stab; | |
4067 | if (with_opaque != NULL | |
4068 | && SYMBOL_MATCHES_SEARCH_NAME (with_opaque, lookup_name)) | |
4069 | stab_best = stab; | |
da51c347 | 4070 | |
ed2dc618 | 4071 | /* Keep looking through other CUs. */ |
9291a0cd | 4072 | } |
9291a0cd | 4073 | |
da51c347 | 4074 | return stab_best; |
9291a0cd TT |
4075 | } |
4076 | ||
4077 | static void | |
4078 | dw2_print_stats (struct objfile *objfile) | |
4079 | { | |
ed2dc618 SM |
4080 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4081 | = get_dwarf2_per_objfile (objfile); | |
b76e467d | 4082 | int total = (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 4083 | + dwarf2_per_objfile->all_type_units.size ()); |
ed2dc618 | 4084 | int count = 0; |
9291a0cd | 4085 | |
ed2dc618 | 4086 | for (int i = 0; i < total; ++i) |
9291a0cd | 4087 | { |
ff4c9fec | 4088 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (i); |
9291a0cd | 4089 | |
43f3e411 | 4090 | if (!per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
4091 | ++count; |
4092 | } | |
e4a48d9d | 4093 | printf_filtered (_(" Number of read CUs: %d\n"), total - count); |
9291a0cd TT |
4094 | printf_filtered (_(" Number of unread CUs: %d\n"), count); |
4095 | } | |
4096 | ||
779bd270 DE |
4097 | /* This dumps minimal information about the index. |
4098 | It is called via "mt print objfiles". | |
4099 | One use is to verify .gdb_index has been loaded by the | |
4100 | gdb.dwarf2/gdb-index.exp testcase. */ | |
4101 | ||
9291a0cd TT |
4102 | static void |
4103 | dw2_dump (struct objfile *objfile) | |
4104 | { | |
ed2dc618 SM |
4105 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4106 | = get_dwarf2_per_objfile (objfile); | |
4107 | ||
779bd270 DE |
4108 | gdb_assert (dwarf2_per_objfile->using_index); |
4109 | printf_filtered (".gdb_index:"); | |
4110 | if (dwarf2_per_objfile->index_table != NULL) | |
4111 | { | |
4112 | printf_filtered (" version %d\n", | |
4113 | dwarf2_per_objfile->index_table->version); | |
4114 | } | |
4115 | else | |
4116 | printf_filtered (" faked for \"readnow\"\n"); | |
4117 | printf_filtered ("\n"); | |
9291a0cd TT |
4118 | } |
4119 | ||
9291a0cd TT |
4120 | static void |
4121 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
4122 | const char *func_name) | |
4123 | { | |
ed2dc618 SM |
4124 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4125 | = get_dwarf2_per_objfile (objfile); | |
da51c347 | 4126 | |
ed2dc618 SM |
4127 | struct dw2_symtab_iterator iter; |
4128 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 4129 | |
ed2dc618 SM |
4130 | /* Note: It doesn't matter what we pass for block_index here. */ |
4131 | dw2_symtab_iter_init (&iter, dwarf2_per_objfile, 0, GLOBAL_BLOCK, VAR_DOMAIN, | |
4132 | func_name); | |
da51c347 | 4133 | |
ed2dc618 | 4134 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
58f0c718 | 4135 | dw2_instantiate_symtab (per_cu, false); |
da51c347 | 4136 | |
9291a0cd TT |
4137 | } |
4138 | ||
4139 | static void | |
4140 | dw2_expand_all_symtabs (struct objfile *objfile) | |
4141 | { | |
ed2dc618 SM |
4142 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4143 | = get_dwarf2_per_objfile (objfile); | |
b76e467d | 4144 | int total_units = (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 4145 | + dwarf2_per_objfile->all_type_units.size ()); |
9291a0cd | 4146 | |
ed2dc618 | 4147 | for (int i = 0; i < total_units; ++i) |
9291a0cd | 4148 | { |
ff4c9fec | 4149 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (i); |
9291a0cd | 4150 | |
58f0c718 TT |
4151 | /* We don't want to directly expand a partial CU, because if we |
4152 | read it with the wrong language, then assertion failures can | |
4153 | be triggered later on. See PR symtab/23010. So, tell | |
4154 | dw2_instantiate_symtab to skip partial CUs -- any important | |
4155 | partial CU will be read via DW_TAG_imported_unit anyway. */ | |
4156 | dw2_instantiate_symtab (per_cu, true); | |
9291a0cd TT |
4157 | } |
4158 | } | |
4159 | ||
4160 | static void | |
652a8996 JK |
4161 | dw2_expand_symtabs_with_fullname (struct objfile *objfile, |
4162 | const char *fullname) | |
9291a0cd | 4163 | { |
ed2dc618 SM |
4164 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4165 | = get_dwarf2_per_objfile (objfile); | |
d4637a04 DE |
4166 | |
4167 | /* We don't need to consider type units here. | |
4168 | This is only called for examining code, e.g. expand_line_sal. | |
4169 | There can be an order of magnitude (or more) more type units | |
4170 | than comp units, and we avoid them if we can. */ | |
4171 | ||
b76e467d | 4172 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
9291a0cd | 4173 | { |
3d7bb9d9 | 4174 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 4175 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
4176 | continue; |
4177 | ||
b76e467d | 4178 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 4179 | if (file_data == NULL) |
9291a0cd TT |
4180 | continue; |
4181 | ||
b76e467d | 4182 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 4183 | { |
652a8996 JK |
4184 | const char *this_fullname = file_data->file_names[j]; |
4185 | ||
4186 | if (filename_cmp (this_fullname, fullname) == 0) | |
9291a0cd | 4187 | { |
58f0c718 | 4188 | dw2_instantiate_symtab (per_cu, false); |
9291a0cd TT |
4189 | break; |
4190 | } | |
4191 | } | |
4192 | } | |
4193 | } | |
4194 | ||
9291a0cd | 4195 | static void |
ade7ed9e | 4196 | dw2_map_matching_symbols (struct objfile *objfile, |
fe978cb0 | 4197 | const char * name, domain_enum domain, |
ade7ed9e | 4198 | int global, |
40658b94 PH |
4199 | int (*callback) (struct block *, |
4200 | struct symbol *, void *), | |
b5ec771e | 4201 | void *data, symbol_name_match_type match, |
2edb89d3 | 4202 | symbol_compare_ftype *ordered_compare) |
9291a0cd | 4203 | { |
40658b94 | 4204 | /* Currently unimplemented; used for Ada. The function can be called if the |
a9e6a4bb JK |
4205 | current language is Ada for a non-Ada objfile using GNU index. As Ada |
4206 | does not look for non-Ada symbols this function should just return. */ | |
9291a0cd TT |
4207 | } |
4208 | ||
b5ec771e PA |
4209 | /* Symbol name matcher for .gdb_index names. |
4210 | ||
4211 | Symbol names in .gdb_index have a few particularities: | |
4212 | ||
4213 | - There's no indication of which is the language of each symbol. | |
4214 | ||
4215 | Since each language has its own symbol name matching algorithm, | |
4216 | and we don't know which language is the right one, we must match | |
3f563c84 PA |
4217 | each symbol against all languages. This would be a potential |
4218 | performance problem if it were not mitigated by the | |
4219 | mapped_index::name_components lookup table, which significantly | |
4220 | reduces the number of times we need to call into this matcher, | |
4221 | making it a non-issue. | |
b5ec771e PA |
4222 | |
4223 | - Symbol names in the index have no overload (parameter) | |
4224 | information. I.e., in C++, "foo(int)" and "foo(long)" both | |
4225 | appear as "foo" in the index, for example. | |
4226 | ||
4227 | This means that the lookup names passed to the symbol name | |
4228 | matcher functions must have no parameter information either | |
4229 | because (e.g.) symbol search name "foo" does not match | |
4230 | lookup-name "foo(int)" [while swapping search name for lookup | |
4231 | name would match]. | |
4232 | */ | |
4233 | class gdb_index_symbol_name_matcher | |
4234 | { | |
4235 | public: | |
4236 | /* Prepares the vector of comparison functions for LOOKUP_NAME. */ | |
4237 | gdb_index_symbol_name_matcher (const lookup_name_info &lookup_name); | |
4238 | ||
4239 | /* Walk all the matcher routines and match SYMBOL_NAME against them. | |
4240 | Returns true if any matcher matches. */ | |
4241 | bool matches (const char *symbol_name); | |
4242 | ||
4243 | private: | |
4244 | /* A reference to the lookup name we're matching against. */ | |
4245 | const lookup_name_info &m_lookup_name; | |
4246 | ||
4247 | /* A vector holding all the different symbol name matchers, for all | |
4248 | languages. */ | |
4249 | std::vector<symbol_name_matcher_ftype *> m_symbol_name_matcher_funcs; | |
4250 | }; | |
4251 | ||
4252 | gdb_index_symbol_name_matcher::gdb_index_symbol_name_matcher | |
4253 | (const lookup_name_info &lookup_name) | |
4254 | : m_lookup_name (lookup_name) | |
4255 | { | |
4256 | /* Prepare the vector of comparison functions upfront, to avoid | |
4257 | doing the same work for each symbol. Care is taken to avoid | |
4258 | matching with the same matcher more than once if/when multiple | |
4259 | languages use the same matcher function. */ | |
4260 | auto &matchers = m_symbol_name_matcher_funcs; | |
4261 | matchers.reserve (nr_languages); | |
4262 | ||
4263 | matchers.push_back (default_symbol_name_matcher); | |
4264 | ||
4265 | for (int i = 0; i < nr_languages; i++) | |
4266 | { | |
4267 | const language_defn *lang = language_def ((enum language) i); | |
c63d3e8d | 4268 | symbol_name_matcher_ftype *name_matcher |
618daa93 | 4269 | = get_symbol_name_matcher (lang, m_lookup_name); |
c63d3e8d PA |
4270 | |
4271 | /* Don't insert the same comparison routine more than once. | |
4272 | Note that we do this linear walk instead of a seemingly | |
4273 | cheaper sorted insert, or use a std::set or something like | |
4274 | that, because relative order of function addresses is not | |
4275 | stable. This is not a problem in practice because the number | |
4276 | of supported languages is low, and the cost here is tiny | |
4277 | compared to the number of searches we'll do afterwards using | |
4278 | this object. */ | |
4279 | if (name_matcher != default_symbol_name_matcher | |
4280 | && (std::find (matchers.begin (), matchers.end (), name_matcher) | |
4281 | == matchers.end ())) | |
4282 | matchers.push_back (name_matcher); | |
b5ec771e PA |
4283 | } |
4284 | } | |
4285 | ||
4286 | bool | |
4287 | gdb_index_symbol_name_matcher::matches (const char *symbol_name) | |
4288 | { | |
4289 | for (auto matches_name : m_symbol_name_matcher_funcs) | |
4290 | if (matches_name (symbol_name, m_lookup_name, NULL)) | |
4291 | return true; | |
4292 | ||
4293 | return false; | |
4294 | } | |
4295 | ||
e1ef7d7a PA |
4296 | /* Starting from a search name, return the string that finds the upper |
4297 | bound of all strings that start with SEARCH_NAME in a sorted name | |
4298 | list. Returns the empty string to indicate that the upper bound is | |
4299 | the end of the list. */ | |
4300 | ||
4301 | static std::string | |
4302 | make_sort_after_prefix_name (const char *search_name) | |
4303 | { | |
4304 | /* When looking to complete "func", we find the upper bound of all | |
4305 | symbols that start with "func" by looking for where we'd insert | |
4306 | the closest string that would follow "func" in lexicographical | |
4307 | order. Usually, that's "func"-with-last-character-incremented, | |
4308 | i.e. "fund". Mind non-ASCII characters, though. Usually those | |
4309 | will be UTF-8 multi-byte sequences, but we can't be certain. | |
4310 | Especially mind the 0xff character, which is a valid character in | |
4311 | non-UTF-8 source character sets (e.g. Latin1 'ÿ'), and we can't | |
4312 | rule out compilers allowing it in identifiers. Note that | |
4313 | conveniently, strcmp/strcasecmp are specified to compare | |
4314 | characters interpreted as unsigned char. So what we do is treat | |
4315 | the whole string as a base 256 number composed of a sequence of | |
4316 | base 256 "digits" and add 1 to it. I.e., adding 1 to 0xff wraps | |
4317 | to 0, and carries 1 to the following more-significant position. | |
4318 | If the very first character in SEARCH_NAME ends up incremented | |
4319 | and carries/overflows, then the upper bound is the end of the | |
4320 | list. The string after the empty string is also the empty | |
4321 | string. | |
4322 | ||
4323 | Some examples of this operation: | |
4324 | ||
4325 | SEARCH_NAME => "+1" RESULT | |
4326 | ||
4327 | "abc" => "abd" | |
4328 | "ab\xff" => "ac" | |
4329 | "\xff" "a" "\xff" => "\xff" "b" | |
4330 | "\xff" => "" | |
4331 | "\xff\xff" => "" | |
4332 | "" => "" | |
4333 | ||
4334 | Then, with these symbols for example: | |
4335 | ||
4336 | func | |
4337 | func1 | |
4338 | fund | |
4339 | ||
4340 | completing "func" looks for symbols between "func" and | |
4341 | "func"-with-last-character-incremented, i.e. "fund" (exclusive), | |
4342 | which finds "func" and "func1", but not "fund". | |
4343 | ||
4344 | And with: | |
4345 | ||
4346 | funcÿ (Latin1 'ÿ' [0xff]) | |
4347 | funcÿ1 | |
4348 | fund | |
4349 | ||
4350 | completing "funcÿ" looks for symbols between "funcÿ" and "fund" | |
4351 | (exclusive), which finds "funcÿ" and "funcÿ1", but not "fund". | |
4352 | ||
4353 | And with: | |
4354 | ||
4355 | ÿÿ (Latin1 'ÿ' [0xff]) | |
4356 | ÿÿ1 | |
4357 | ||
4358 | completing "ÿ" or "ÿÿ" looks for symbols between between "ÿÿ" and | |
4359 | the end of the list. | |
4360 | */ | |
4361 | std::string after = search_name; | |
4362 | while (!after.empty () && (unsigned char) after.back () == 0xff) | |
4363 | after.pop_back (); | |
4364 | if (!after.empty ()) | |
4365 | after.back () = (unsigned char) after.back () + 1; | |
4366 | return after; | |
4367 | } | |
4368 | ||
5c58de74 | 4369 | /* See declaration. */ |
61d96d7e | 4370 | |
5c58de74 PA |
4371 | std::pair<std::vector<name_component>::const_iterator, |
4372 | std::vector<name_component>::const_iterator> | |
44ed8f3e | 4373 | mapped_index_base::find_name_components_bounds |
5c58de74 | 4374 | (const lookup_name_info &lookup_name_without_params) const |
3f563c84 | 4375 | { |
5c58de74 PA |
4376 | auto *name_cmp |
4377 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
3f563c84 PA |
4378 | |
4379 | const char *cplus | |
c62446b1 | 4380 | = lookup_name_without_params.cplus ().lookup_name ().c_str (); |
9291a0cd | 4381 | |
3f563c84 PA |
4382 | /* Comparison function object for lower_bound that matches against a |
4383 | given symbol name. */ | |
4384 | auto lookup_compare_lower = [&] (const name_component &elem, | |
4385 | const char *name) | |
4386 | { | |
5c58de74 | 4387 | const char *elem_qualified = this->symbol_name_at (elem.idx); |
3f563c84 PA |
4388 | const char *elem_name = elem_qualified + elem.name_offset; |
4389 | return name_cmp (elem_name, name) < 0; | |
4390 | }; | |
4391 | ||
4392 | /* Comparison function object for upper_bound that matches against a | |
4393 | given symbol name. */ | |
4394 | auto lookup_compare_upper = [&] (const char *name, | |
4395 | const name_component &elem) | |
4396 | { | |
5c58de74 | 4397 | const char *elem_qualified = this->symbol_name_at (elem.idx); |
3f563c84 PA |
4398 | const char *elem_name = elem_qualified + elem.name_offset; |
4399 | return name_cmp (name, elem_name) < 0; | |
4400 | }; | |
4401 | ||
5c58de74 PA |
4402 | auto begin = this->name_components.begin (); |
4403 | auto end = this->name_components.end (); | |
3f563c84 PA |
4404 | |
4405 | /* Find the lower bound. */ | |
4406 | auto lower = [&] () | |
4407 | { | |
5c58de74 | 4408 | if (lookup_name_without_params.completion_mode () && cplus[0] == '\0') |
3f563c84 PA |
4409 | return begin; |
4410 | else | |
4411 | return std::lower_bound (begin, end, cplus, lookup_compare_lower); | |
4412 | } (); | |
4413 | ||
4414 | /* Find the upper bound. */ | |
4415 | auto upper = [&] () | |
4416 | { | |
5c58de74 | 4417 | if (lookup_name_without_params.completion_mode ()) |
3f563c84 | 4418 | { |
e1ef7d7a PA |
4419 | /* In completion mode, we want UPPER to point past all |
4420 | symbols names that have the same prefix. I.e., with | |
4421 | these symbols, and completing "func": | |
4422 | ||
4423 | function << lower bound | |
4424 | function1 | |
4425 | other_function << upper bound | |
4426 | ||
4427 | We find the upper bound by looking for the insertion | |
4428 | point of "func"-with-last-character-incremented, | |
4429 | i.e. "fund". */ | |
4430 | std::string after = make_sort_after_prefix_name (cplus); | |
4431 | if (after.empty ()) | |
3f563c84 | 4432 | return end; |
e6b2f5ef PA |
4433 | return std::lower_bound (lower, end, after.c_str (), |
4434 | lookup_compare_lower); | |
3f563c84 PA |
4435 | } |
4436 | else | |
4437 | return std::upper_bound (lower, end, cplus, lookup_compare_upper); | |
4438 | } (); | |
4439 | ||
5c58de74 PA |
4440 | return {lower, upper}; |
4441 | } | |
4442 | ||
4443 | /* See declaration. */ | |
4444 | ||
4445 | void | |
44ed8f3e | 4446 | mapped_index_base::build_name_components () |
5c58de74 PA |
4447 | { |
4448 | if (!this->name_components.empty ()) | |
4449 | return; | |
4450 | ||
4451 | this->name_components_casing = case_sensitivity; | |
4452 | auto *name_cmp | |
4453 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
4454 | ||
4455 | /* The code below only knows how to break apart components of C++ | |
4456 | symbol names (and other languages that use '::' as | |
4457 | namespace/module separator). If we add support for wild matching | |
4458 | to some language that uses some other operator (E.g., Ada, Go and | |
4459 | D use '.'), then we'll need to try splitting the symbol name | |
4460 | according to that language too. Note that Ada does support wild | |
4461 | matching, but doesn't currently support .gdb_index. */ | |
44ed8f3e PA |
4462 | auto count = this->symbol_name_count (); |
4463 | for (offset_type idx = 0; idx < count; idx++) | |
5c58de74 | 4464 | { |
44ed8f3e | 4465 | if (this->symbol_name_slot_invalid (idx)) |
5c58de74 PA |
4466 | continue; |
4467 | ||
4468 | const char *name = this->symbol_name_at (idx); | |
4469 | ||
4470 | /* Add each name component to the name component table. */ | |
4471 | unsigned int previous_len = 0; | |
4472 | for (unsigned int current_len = cp_find_first_component (name); | |
4473 | name[current_len] != '\0'; | |
4474 | current_len += cp_find_first_component (name + current_len)) | |
4475 | { | |
4476 | gdb_assert (name[current_len] == ':'); | |
4477 | this->name_components.push_back ({previous_len, idx}); | |
4478 | /* Skip the '::'. */ | |
4479 | current_len += 2; | |
4480 | previous_len = current_len; | |
4481 | } | |
4482 | this->name_components.push_back ({previous_len, idx}); | |
4483 | } | |
4484 | ||
4485 | /* Sort name_components elements by name. */ | |
4486 | auto name_comp_compare = [&] (const name_component &left, | |
4487 | const name_component &right) | |
4488 | { | |
4489 | const char *left_qualified = this->symbol_name_at (left.idx); | |
4490 | const char *right_qualified = this->symbol_name_at (right.idx); | |
4491 | ||
4492 | const char *left_name = left_qualified + left.name_offset; | |
4493 | const char *right_name = right_qualified + right.name_offset; | |
4494 | ||
4495 | return name_cmp (left_name, right_name) < 0; | |
4496 | }; | |
4497 | ||
4498 | std::sort (this->name_components.begin (), | |
4499 | this->name_components.end (), | |
4500 | name_comp_compare); | |
4501 | } | |
4502 | ||
4503 | /* Helper for dw2_expand_symtabs_matching that works with a | |
44ed8f3e PA |
4504 | mapped_index_base instead of the containing objfile. This is split |
4505 | to a separate function in order to be able to unit test the | |
4506 | name_components matching using a mock mapped_index_base. For each | |
5c58de74 | 4507 | symbol name that matches, calls MATCH_CALLBACK, passing it the |
44ed8f3e | 4508 | symbol's index in the mapped_index_base symbol table. */ |
5c58de74 PA |
4509 | |
4510 | static void | |
4511 | dw2_expand_symtabs_matching_symbol | |
44ed8f3e | 4512 | (mapped_index_base &index, |
5c58de74 PA |
4513 | const lookup_name_info &lookup_name_in, |
4514 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
4515 | enum search_domain kind, | |
4516 | gdb::function_view<void (offset_type)> match_callback) | |
4517 | { | |
4518 | lookup_name_info lookup_name_without_params | |
4519 | = lookup_name_in.make_ignore_params (); | |
4520 | gdb_index_symbol_name_matcher lookup_name_matcher | |
4521 | (lookup_name_without_params); | |
4522 | ||
4523 | /* Build the symbol name component sorted vector, if we haven't | |
4524 | yet. */ | |
4525 | index.build_name_components (); | |
4526 | ||
4527 | auto bounds = index.find_name_components_bounds (lookup_name_without_params); | |
4528 | ||
3f563c84 PA |
4529 | /* Now for each symbol name in range, check to see if we have a name |
4530 | match, and if so, call the MATCH_CALLBACK callback. */ | |
4531 | ||
4532 | /* The same symbol may appear more than once in the range though. | |
4533 | E.g., if we're looking for symbols that complete "w", and we have | |
4534 | a symbol named "w1::w2", we'll find the two name components for | |
4535 | that same symbol in the range. To be sure we only call the | |
4536 | callback once per symbol, we first collect the symbol name | |
4537 | indexes that matched in a temporary vector and ignore | |
4538 | duplicates. */ | |
4539 | std::vector<offset_type> matches; | |
5c58de74 | 4540 | matches.reserve (std::distance (bounds.first, bounds.second)); |
3f563c84 | 4541 | |
5c58de74 | 4542 | for (; bounds.first != bounds.second; ++bounds.first) |
3f563c84 | 4543 | { |
5c58de74 | 4544 | const char *qualified = index.symbol_name_at (bounds.first->idx); |
3f563c84 PA |
4545 | |
4546 | if (!lookup_name_matcher.matches (qualified) | |
4547 | || (symbol_matcher != NULL && !symbol_matcher (qualified))) | |
9291a0cd TT |
4548 | continue; |
4549 | ||
5c58de74 | 4550 | matches.push_back (bounds.first->idx); |
3f563c84 PA |
4551 | } |
4552 | ||
4553 | std::sort (matches.begin (), matches.end ()); | |
4554 | ||
4555 | /* Finally call the callback, once per match. */ | |
4556 | ULONGEST prev = -1; | |
4557 | for (offset_type idx : matches) | |
4558 | { | |
4559 | if (prev != idx) | |
4560 | { | |
4561 | match_callback (idx); | |
4562 | prev = idx; | |
4563 | } | |
4564 | } | |
4565 | ||
4566 | /* Above we use a type wider than idx's for 'prev', since 0 and | |
4567 | (offset_type)-1 are both possible values. */ | |
4568 | static_assert (sizeof (prev) > sizeof (offset_type), ""); | |
4569 | } | |
4570 | ||
c62446b1 PA |
4571 | #if GDB_SELF_TEST |
4572 | ||
4573 | namespace selftests { namespace dw2_expand_symtabs_matching { | |
4574 | ||
a3c5fafd PA |
4575 | /* A mock .gdb_index/.debug_names-like name index table, enough to |
4576 | exercise dw2_expand_symtabs_matching_symbol, which works with the | |
4577 | mapped_index_base interface. Builds an index from the symbol list | |
4578 | passed as parameter to the constructor. */ | |
4579 | class mock_mapped_index : public mapped_index_base | |
c62446b1 PA |
4580 | { |
4581 | public: | |
a3c5fafd PA |
4582 | mock_mapped_index (gdb::array_view<const char *> symbols) |
4583 | : m_symbol_table (symbols) | |
c62446b1 PA |
4584 | {} |
4585 | ||
a3c5fafd | 4586 | DISABLE_COPY_AND_ASSIGN (mock_mapped_index); |
c62446b1 | 4587 | |
a3c5fafd | 4588 | /* Return the number of names in the symbol table. */ |
632e107b | 4589 | size_t symbol_name_count () const override |
c62446b1 | 4590 | { |
a3c5fafd | 4591 | return m_symbol_table.size (); |
c62446b1 PA |
4592 | } |
4593 | ||
a3c5fafd | 4594 | /* Get the name of the symbol at IDX in the symbol table. */ |
632e107b | 4595 | const char *symbol_name_at (offset_type idx) const override |
a3c5fafd PA |
4596 | { |
4597 | return m_symbol_table[idx]; | |
4598 | } | |
c62446b1 | 4599 | |
a3c5fafd PA |
4600 | private: |
4601 | gdb::array_view<const char *> m_symbol_table; | |
c62446b1 PA |
4602 | }; |
4603 | ||
4604 | /* Convenience function that converts a NULL pointer to a "<null>" | |
4605 | string, to pass to print routines. */ | |
4606 | ||
4607 | static const char * | |
4608 | string_or_null (const char *str) | |
4609 | { | |
4610 | return str != NULL ? str : "<null>"; | |
4611 | } | |
4612 | ||
4613 | /* Check if a lookup_name_info built from | |
4614 | NAME/MATCH_TYPE/COMPLETION_MODE matches the symbols in the mock | |
4615 | index. EXPECTED_LIST is the list of expected matches, in expected | |
4616 | matching order. If no match expected, then an empty list is | |
4617 | specified. Returns true on success. On failure prints a warning | |
4618 | indicating the file:line that failed, and returns false. */ | |
4619 | ||
4620 | static bool | |
4621 | check_match (const char *file, int line, | |
4622 | mock_mapped_index &mock_index, | |
4623 | const char *name, symbol_name_match_type match_type, | |
4624 | bool completion_mode, | |
4625 | std::initializer_list<const char *> expected_list) | |
4626 | { | |
4627 | lookup_name_info lookup_name (name, match_type, completion_mode); | |
4628 | ||
4629 | bool matched = true; | |
4630 | ||
4631 | auto mismatch = [&] (const char *expected_str, | |
4632 | const char *got) | |
4633 | { | |
4634 | warning (_("%s:%d: match_type=%s, looking-for=\"%s\", " | |
4635 | "expected=\"%s\", got=\"%s\"\n"), | |
4636 | file, line, | |
4637 | (match_type == symbol_name_match_type::FULL | |
4638 | ? "FULL" : "WILD"), | |
4639 | name, string_or_null (expected_str), string_or_null (got)); | |
4640 | matched = false; | |
4641 | }; | |
4642 | ||
4643 | auto expected_it = expected_list.begin (); | |
4644 | auto expected_end = expected_list.end (); | |
4645 | ||
a3c5fafd | 4646 | dw2_expand_symtabs_matching_symbol (mock_index, lookup_name, |
c62446b1 PA |
4647 | NULL, ALL_DOMAIN, |
4648 | [&] (offset_type idx) | |
4649 | { | |
a3c5fafd | 4650 | const char *matched_name = mock_index.symbol_name_at (idx); |
c62446b1 PA |
4651 | const char *expected_str |
4652 | = expected_it == expected_end ? NULL : *expected_it++; | |
4653 | ||
4654 | if (expected_str == NULL || strcmp (expected_str, matched_name) != 0) | |
4655 | mismatch (expected_str, matched_name); | |
4656 | }); | |
4657 | ||
4658 | const char *expected_str | |
4659 | = expected_it == expected_end ? NULL : *expected_it++; | |
4660 | if (expected_str != NULL) | |
4661 | mismatch (expected_str, NULL); | |
4662 | ||
4663 | return matched; | |
4664 | } | |
4665 | ||
4666 | /* The symbols added to the mock mapped_index for testing (in | |
4667 | canonical form). */ | |
4668 | static const char *test_symbols[] = { | |
4669 | "function", | |
4670 | "std::bar", | |
4671 | "std::zfunction", | |
4672 | "std::zfunction2", | |
4673 | "w1::w2", | |
4674 | "ns::foo<char*>", | |
4675 | "ns::foo<int>", | |
4676 | "ns::foo<long>", | |
a20714ff PA |
4677 | "ns2::tmpl<int>::foo2", |
4678 | "(anonymous namespace)::A::B::C", | |
c62446b1 | 4679 | |
e1ef7d7a PA |
4680 | /* These are used to check that the increment-last-char in the |
4681 | matching algorithm for completion doesn't match "t1_fund" when | |
4682 | completing "t1_func". */ | |
4683 | "t1_func", | |
4684 | "t1_func1", | |
4685 | "t1_fund", | |
4686 | "t1_fund1", | |
4687 | ||
4688 | /* A UTF-8 name with multi-byte sequences to make sure that | |
4689 | cp-name-parser understands this as a single identifier ("função" | |
4690 | is "function" in PT). */ | |
4691 | u8"u8função", | |
4692 | ||
4693 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4694 | "yfunc\377", | |
4695 | ||
4696 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4697 | "\377", | |
4698 | "\377\377123", | |
4699 | ||
c62446b1 PA |
4700 | /* A name with all sorts of complications. Starts with "z" to make |
4701 | it easier for the completion tests below. */ | |
4702 | #define Z_SYM_NAME \ | |
4703 | "z::std::tuple<(anonymous namespace)::ui*, std::bar<(anonymous namespace)::ui> >" \ | |
4704 | "::tuple<(anonymous namespace)::ui*, " \ | |
4705 | "std::default_delete<(anonymous namespace)::ui>, void>" | |
4706 | ||
4707 | Z_SYM_NAME | |
4708 | }; | |
4709 | ||
a3c5fafd PA |
4710 | /* Returns true if the mapped_index_base::find_name_component_bounds |
4711 | method finds EXPECTED_SYMS in INDEX when looking for SEARCH_NAME, | |
4712 | in completion mode. */ | |
5c58de74 PA |
4713 | |
4714 | static bool | |
a3c5fafd | 4715 | check_find_bounds_finds (mapped_index_base &index, |
5c58de74 PA |
4716 | const char *search_name, |
4717 | gdb::array_view<const char *> expected_syms) | |
4718 | { | |
4719 | lookup_name_info lookup_name (search_name, | |
4720 | symbol_name_match_type::FULL, true); | |
4721 | ||
4722 | auto bounds = index.find_name_components_bounds (lookup_name); | |
4723 | ||
4724 | size_t distance = std::distance (bounds.first, bounds.second); | |
4725 | if (distance != expected_syms.size ()) | |
4726 | return false; | |
4727 | ||
4728 | for (size_t exp_elem = 0; exp_elem < distance; exp_elem++) | |
4729 | { | |
4730 | auto nc_elem = bounds.first + exp_elem; | |
4731 | const char *qualified = index.symbol_name_at (nc_elem->idx); | |
4732 | if (strcmp (qualified, expected_syms[exp_elem]) != 0) | |
4733 | return false; | |
4734 | } | |
4735 | ||
4736 | return true; | |
4737 | } | |
4738 | ||
4739 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4740 | method. */ | |
4741 | ||
c62446b1 | 4742 | static void |
5c58de74 PA |
4743 | test_mapped_index_find_name_component_bounds () |
4744 | { | |
4745 | mock_mapped_index mock_index (test_symbols); | |
4746 | ||
a3c5fafd | 4747 | mock_index.build_name_components (); |
5c58de74 PA |
4748 | |
4749 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4750 | method in completion mode. */ | |
4751 | { | |
4752 | static const char *expected_syms[] = { | |
4753 | "t1_func", | |
4754 | "t1_func1", | |
5c58de74 PA |
4755 | }; |
4756 | ||
a3c5fafd | 4757 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4758 | "t1_func", expected_syms)); |
4759 | } | |
4760 | ||
4761 | /* Check that the increment-last-char in the name matching algorithm | |
4762 | for completion doesn't get confused with Ansi1 'ÿ' / 0xff. */ | |
4763 | { | |
4764 | static const char *expected_syms1[] = { | |
4765 | "\377", | |
4766 | "\377\377123", | |
4767 | }; | |
a3c5fafd | 4768 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4769 | "\377", expected_syms1)); |
4770 | ||
4771 | static const char *expected_syms2[] = { | |
4772 | "\377\377123", | |
4773 | }; | |
a3c5fafd | 4774 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4775 | "\377\377", expected_syms2)); |
4776 | } | |
4777 | } | |
4778 | ||
4779 | /* Test dw2_expand_symtabs_matching_symbol. */ | |
4780 | ||
4781 | static void | |
4782 | test_dw2_expand_symtabs_matching_symbol () | |
c62446b1 PA |
4783 | { |
4784 | mock_mapped_index mock_index (test_symbols); | |
4785 | ||
4786 | /* We let all tests run until the end even if some fails, for debug | |
4787 | convenience. */ | |
4788 | bool any_mismatch = false; | |
4789 | ||
4790 | /* Create the expected symbols list (an initializer_list). Needed | |
4791 | because lists have commas, and we need to pass them to CHECK, | |
4792 | which is a macro. */ | |
4793 | #define EXPECT(...) { __VA_ARGS__ } | |
4794 | ||
4795 | /* Wrapper for check_match that passes down the current | |
4796 | __FILE__/__LINE__. */ | |
4797 | #define CHECK_MATCH(NAME, MATCH_TYPE, COMPLETION_MODE, EXPECTED_LIST) \ | |
4798 | any_mismatch |= !check_match (__FILE__, __LINE__, \ | |
4799 | mock_index, \ | |
4800 | NAME, MATCH_TYPE, COMPLETION_MODE, \ | |
4801 | EXPECTED_LIST) | |
4802 | ||
4803 | /* Identity checks. */ | |
4804 | for (const char *sym : test_symbols) | |
4805 | { | |
4806 | /* Should be able to match all existing symbols. */ | |
4807 | CHECK_MATCH (sym, symbol_name_match_type::FULL, false, | |
4808 | EXPECT (sym)); | |
4809 | ||
4810 | /* Should be able to match all existing symbols with | |
4811 | parameters. */ | |
4812 | std::string with_params = std::string (sym) + "(int)"; | |
4813 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4814 | EXPECT (sym)); | |
4815 | ||
4816 | /* Should be able to match all existing symbols with | |
4817 | parameters and qualifiers. */ | |
4818 | with_params = std::string (sym) + " ( int ) const"; | |
4819 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4820 | EXPECT (sym)); | |
4821 | ||
4822 | /* This should really find sym, but cp-name-parser.y doesn't | |
4823 | know about lvalue/rvalue qualifiers yet. */ | |
4824 | with_params = std::string (sym) + " ( int ) &&"; | |
4825 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4826 | {}); | |
4827 | } | |
4828 | ||
e1ef7d7a PA |
4829 | /* Check that the name matching algorithm for completion doesn't get |
4830 | confused with Latin1 'ÿ' / 0xff. */ | |
4831 | { | |
4832 | static const char str[] = "\377"; | |
4833 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4834 | EXPECT ("\377", "\377\377123")); | |
4835 | } | |
4836 | ||
4837 | /* Check that the increment-last-char in the matching algorithm for | |
4838 | completion doesn't match "t1_fund" when completing "t1_func". */ | |
4839 | { | |
4840 | static const char str[] = "t1_func"; | |
4841 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4842 | EXPECT ("t1_func", "t1_func1")); | |
4843 | } | |
4844 | ||
c62446b1 PA |
4845 | /* Check that completion mode works at each prefix of the expected |
4846 | symbol name. */ | |
4847 | { | |
4848 | static const char str[] = "function(int)"; | |
4849 | size_t len = strlen (str); | |
4850 | std::string lookup; | |
4851 | ||
4852 | for (size_t i = 1; i < len; i++) | |
4853 | { | |
4854 | lookup.assign (str, i); | |
4855 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4856 | EXPECT ("function")); | |
4857 | } | |
4858 | } | |
4859 | ||
4860 | /* While "w" is a prefix of both components, the match function | |
4861 | should still only be called once. */ | |
4862 | { | |
4863 | CHECK_MATCH ("w", symbol_name_match_type::FULL, true, | |
4864 | EXPECT ("w1::w2")); | |
a20714ff PA |
4865 | CHECK_MATCH ("w", symbol_name_match_type::WILD, true, |
4866 | EXPECT ("w1::w2")); | |
c62446b1 PA |
4867 | } |
4868 | ||
4869 | /* Same, with a "complicated" symbol. */ | |
4870 | { | |
4871 | static const char str[] = Z_SYM_NAME; | |
4872 | size_t len = strlen (str); | |
4873 | std::string lookup; | |
4874 | ||
4875 | for (size_t i = 1; i < len; i++) | |
4876 | { | |
4877 | lookup.assign (str, i); | |
4878 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4879 | EXPECT (Z_SYM_NAME)); | |
4880 | } | |
4881 | } | |
4882 | ||
4883 | /* In FULL mode, an incomplete symbol doesn't match. */ | |
4884 | { | |
4885 | CHECK_MATCH ("std::zfunction(int", symbol_name_match_type::FULL, false, | |
4886 | {}); | |
4887 | } | |
4888 | ||
4889 | /* A complete symbol with parameters matches any overload, since the | |
4890 | index has no overload info. */ | |
4891 | { | |
4892 | CHECK_MATCH ("std::zfunction(int)", symbol_name_match_type::FULL, true, | |
4893 | EXPECT ("std::zfunction", "std::zfunction2")); | |
a20714ff PA |
4894 | CHECK_MATCH ("zfunction(int)", symbol_name_match_type::WILD, true, |
4895 | EXPECT ("std::zfunction", "std::zfunction2")); | |
4896 | CHECK_MATCH ("zfunc", symbol_name_match_type::WILD, true, | |
4897 | EXPECT ("std::zfunction", "std::zfunction2")); | |
c62446b1 PA |
4898 | } |
4899 | ||
4900 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4901 | template argument list. */ | |
4902 | { | |
4903 | static const char expected[] = "ns::foo<int>"; | |
4904 | CHECK_MATCH ("ns :: foo < int > ", symbol_name_match_type::FULL, false, | |
4905 | EXPECT (expected)); | |
a20714ff PA |
4906 | CHECK_MATCH ("foo < int > ", symbol_name_match_type::WILD, false, |
4907 | EXPECT (expected)); | |
c62446b1 PA |
4908 | } |
4909 | ||
4910 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4911 | template argument list that includes a pointer. */ | |
4912 | { | |
4913 | static const char expected[] = "ns::foo<char*>"; | |
4914 | /* Try both completion and non-completion modes. */ | |
4915 | static const bool completion_mode[2] = {false, true}; | |
4916 | for (size_t i = 0; i < 2; i++) | |
4917 | { | |
4918 | CHECK_MATCH ("ns :: foo < char * >", symbol_name_match_type::FULL, | |
4919 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4920 | CHECK_MATCH ("foo < char * >", symbol_name_match_type::WILD, |
4921 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4922 | |
4923 | CHECK_MATCH ("ns :: foo < char * > (int)", symbol_name_match_type::FULL, | |
4924 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4925 | CHECK_MATCH ("foo < char * > (int)", symbol_name_match_type::WILD, |
4926 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4927 | } |
4928 | } | |
4929 | ||
4930 | { | |
4931 | /* Check method qualifiers are ignored. */ | |
4932 | static const char expected[] = "ns::foo<char*>"; | |
4933 | CHECK_MATCH ("ns :: foo < char * > ( int ) const", | |
4934 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
4935 | CHECK_MATCH ("ns :: foo < char * > ( int ) &&", | |
4936 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
a20714ff PA |
4937 | CHECK_MATCH ("foo < char * > ( int ) const", |
4938 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
4939 | CHECK_MATCH ("foo < char * > ( int ) &&", | |
4940 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
c62446b1 PA |
4941 | } |
4942 | ||
4943 | /* Test lookup names that don't match anything. */ | |
4944 | { | |
a20714ff PA |
4945 | CHECK_MATCH ("bar2", symbol_name_match_type::WILD, false, |
4946 | {}); | |
4947 | ||
c62446b1 PA |
4948 | CHECK_MATCH ("doesntexist", symbol_name_match_type::FULL, false, |
4949 | {}); | |
4950 | } | |
4951 | ||
a20714ff PA |
4952 | /* Some wild matching tests, exercising "(anonymous namespace)", |
4953 | which should not be confused with a parameter list. */ | |
4954 | { | |
4955 | static const char *syms[] = { | |
4956 | "A::B::C", | |
4957 | "B::C", | |
4958 | "C", | |
4959 | "A :: B :: C ( int )", | |
4960 | "B :: C ( int )", | |
4961 | "C ( int )", | |
4962 | }; | |
4963 | ||
4964 | for (const char *s : syms) | |
4965 | { | |
4966 | CHECK_MATCH (s, symbol_name_match_type::WILD, false, | |
4967 | EXPECT ("(anonymous namespace)::A::B::C")); | |
4968 | } | |
4969 | } | |
4970 | ||
4971 | { | |
4972 | static const char expected[] = "ns2::tmpl<int>::foo2"; | |
4973 | CHECK_MATCH ("tmp", symbol_name_match_type::WILD, true, | |
4974 | EXPECT (expected)); | |
4975 | CHECK_MATCH ("tmpl<", symbol_name_match_type::WILD, true, | |
4976 | EXPECT (expected)); | |
4977 | } | |
4978 | ||
c62446b1 PA |
4979 | SELF_CHECK (!any_mismatch); |
4980 | ||
4981 | #undef EXPECT | |
4982 | #undef CHECK_MATCH | |
4983 | } | |
4984 | ||
5c58de74 PA |
4985 | static void |
4986 | run_test () | |
4987 | { | |
4988 | test_mapped_index_find_name_component_bounds (); | |
4989 | test_dw2_expand_symtabs_matching_symbol (); | |
4990 | } | |
4991 | ||
c62446b1 PA |
4992 | }} // namespace selftests::dw2_expand_symtabs_matching |
4993 | ||
4994 | #endif /* GDB_SELF_TEST */ | |
4995 | ||
4b514bc8 JK |
4996 | /* If FILE_MATCHER is NULL or if PER_CU has |
4997 | dwarf2_per_cu_quick_data::MARK set (see | |
4998 | dw_expand_symtabs_matching_file_matcher), expand the CU and call | |
4999 | EXPANSION_NOTIFY on it. */ | |
5000 | ||
5001 | static void | |
5002 | dw2_expand_symtabs_matching_one | |
5003 | (struct dwarf2_per_cu_data *per_cu, | |
5004 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
5005 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify) | |
5006 | { | |
5007 | if (file_matcher == NULL || per_cu->v.quick->mark) | |
5008 | { | |
5009 | bool symtab_was_null | |
5010 | = (per_cu->v.quick->compunit_symtab == NULL); | |
5011 | ||
58f0c718 | 5012 | dw2_instantiate_symtab (per_cu, false); |
4b514bc8 JK |
5013 | |
5014 | if (expansion_notify != NULL | |
5015 | && symtab_was_null | |
5016 | && per_cu->v.quick->compunit_symtab != NULL) | |
5017 | expansion_notify (per_cu->v.quick->compunit_symtab); | |
5018 | } | |
5019 | } | |
5020 | ||
3f563c84 PA |
5021 | /* Helper for dw2_expand_matching symtabs. Called on each symbol |
5022 | matched, to expand corresponding CUs that were marked. IDX is the | |
5023 | index of the symbol name that matched. */ | |
5024 | ||
5025 | static void | |
5026 | dw2_expand_marked_cus | |
ed2dc618 | 5027 | (struct dwarf2_per_objfile *dwarf2_per_objfile, offset_type idx, |
3f563c84 PA |
5028 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
5029 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
5030 | search_domain kind) | |
5031 | { | |
3f563c84 PA |
5032 | offset_type *vec, vec_len, vec_idx; |
5033 | bool global_seen = false; | |
ed2dc618 | 5034 | mapped_index &index = *dwarf2_per_objfile->index_table; |
3f563c84 | 5035 | |
61920122 | 5036 | vec = (offset_type *) (index.constant_pool |
f00a2de2 | 5037 | + MAYBE_SWAP (index.symbol_table[idx].vec)); |
61920122 PA |
5038 | vec_len = MAYBE_SWAP (vec[0]); |
5039 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
5040 | { | |
61920122 PA |
5041 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[vec_idx + 1]); |
5042 | /* This value is only valid for index versions >= 7. */ | |
5043 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
5044 | gdb_index_symbol_kind symbol_kind = | |
5045 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
5046 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
5047 | /* Only check the symbol attributes if they're present. | |
5048 | Indices prior to version 7 don't record them, | |
5049 | and indices >= 7 may elide them for certain symbols | |
5050 | (gold does this). */ | |
5051 | int attrs_valid = | |
5052 | (index.version >= 7 | |
5053 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
5054 | ||
5055 | /* Work around gold/15646. */ | |
5056 | if (attrs_valid) | |
9291a0cd | 5057 | { |
61920122 PA |
5058 | if (!is_static && global_seen) |
5059 | continue; | |
5060 | if (!is_static) | |
5061 | global_seen = true; | |
5062 | } | |
3190f0c6 | 5063 | |
61920122 PA |
5064 | /* Only check the symbol's kind if it has one. */ |
5065 | if (attrs_valid) | |
5066 | { | |
5067 | switch (kind) | |
8943b874 | 5068 | { |
61920122 PA |
5069 | case VARIABLES_DOMAIN: |
5070 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
5071 | continue; | |
5072 | break; | |
5073 | case FUNCTIONS_DOMAIN: | |
5074 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
8943b874 | 5075 | continue; |
61920122 PA |
5076 | break; |
5077 | case TYPES_DOMAIN: | |
5078 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
5079 | continue; | |
5080 | break; | |
5081 | default: | |
5082 | break; | |
8943b874 | 5083 | } |
61920122 | 5084 | } |
8943b874 | 5085 | |
61920122 | 5086 | /* Don't crash on bad data. */ |
b76e467d | 5087 | if (cu_index >= (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 5088 | + dwarf2_per_objfile->all_type_units.size ())) |
61920122 | 5089 | { |
b98664d3 | 5090 | complaint (_(".gdb_index entry has bad CU index" |
ed2dc618 SM |
5091 | " [in module %s]"), |
5092 | objfile_name (dwarf2_per_objfile->objfile)); | |
61920122 PA |
5093 | continue; |
5094 | } | |
5095 | ||
ff4c9fec | 5096 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (cu_index); |
4b514bc8 JK |
5097 | dw2_expand_symtabs_matching_one (per_cu, file_matcher, |
5098 | expansion_notify); | |
61920122 PA |
5099 | } |
5100 | } | |
5101 | ||
4b514bc8 JK |
5102 | /* If FILE_MATCHER is non-NULL, set all the |
5103 | dwarf2_per_cu_quick_data::MARK of the current DWARF2_PER_OBJFILE | |
5104 | that match FILE_MATCHER. */ | |
5105 | ||
61920122 | 5106 | static void |
4b514bc8 | 5107 | dw_expand_symtabs_matching_file_matcher |
ed2dc618 SM |
5108 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
5109 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher) | |
61920122 | 5110 | { |
4b514bc8 | 5111 | if (file_matcher == NULL) |
61920122 PA |
5112 | return; |
5113 | ||
4b514bc8 JK |
5114 | objfile *const objfile = dwarf2_per_objfile->objfile; |
5115 | ||
5116 | htab_up visited_found (htab_create_alloc (10, htab_hash_pointer, | |
5117 | htab_eq_pointer, | |
5118 | NULL, xcalloc, xfree)); | |
5119 | htab_up visited_not_found (htab_create_alloc (10, htab_hash_pointer, | |
61920122 PA |
5120 | htab_eq_pointer, |
5121 | NULL, xcalloc, xfree)); | |
61920122 | 5122 | |
4b514bc8 JK |
5123 | /* The rule is CUs specify all the files, including those used by |
5124 | any TU, so there's no need to scan TUs here. */ | |
61920122 | 5125 | |
b76e467d | 5126 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 5127 | { |
927aa2e7 JK |
5128 | QUIT; |
5129 | ||
5130 | per_cu->v.quick->mark = 0; | |
5131 | ||
5132 | /* We only need to look at symtabs not already expanded. */ | |
5133 | if (per_cu->v.quick->compunit_symtab) | |
5134 | continue; | |
5135 | ||
b76e467d | 5136 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
927aa2e7 JK |
5137 | if (file_data == NULL) |
5138 | continue; | |
5139 | ||
5140 | if (htab_find (visited_not_found.get (), file_data) != NULL) | |
5141 | continue; | |
5142 | else if (htab_find (visited_found.get (), file_data) != NULL) | |
5143 | { | |
5144 | per_cu->v.quick->mark = 1; | |
5145 | continue; | |
5146 | } | |
5147 | ||
b76e467d | 5148 | for (int j = 0; j < file_data->num_file_names; ++j) |
927aa2e7 JK |
5149 | { |
5150 | const char *this_real_name; | |
5151 | ||
5152 | if (file_matcher (file_data->file_names[j], false)) | |
5153 | { | |
5154 | per_cu->v.quick->mark = 1; | |
5155 | break; | |
5156 | } | |
5157 | ||
5158 | /* Before we invoke realpath, which can get expensive when many | |
5159 | files are involved, do a quick comparison of the basenames. */ | |
5160 | if (!basenames_may_differ | |
5161 | && !file_matcher (lbasename (file_data->file_names[j]), | |
5162 | true)) | |
5163 | continue; | |
5164 | ||
5165 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
5166 | if (file_matcher (this_real_name, false)) | |
5167 | { | |
5168 | per_cu->v.quick->mark = 1; | |
5169 | break; | |
5170 | } | |
5171 | } | |
5172 | ||
b76e467d SM |
5173 | void **slot = htab_find_slot (per_cu->v.quick->mark |
5174 | ? visited_found.get () | |
5175 | : visited_not_found.get (), | |
5176 | file_data, INSERT); | |
927aa2e7 JK |
5177 | *slot = file_data; |
5178 | } | |
5179 | } | |
5180 | ||
5181 | static void | |
5182 | dw2_expand_symtabs_matching | |
5183 | (struct objfile *objfile, | |
5184 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
5185 | const lookup_name_info &lookup_name, | |
5186 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
5187 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
5188 | enum search_domain kind) | |
5189 | { | |
ed2dc618 SM |
5190 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5191 | = get_dwarf2_per_objfile (objfile); | |
927aa2e7 JK |
5192 | |
5193 | /* index_table is NULL if OBJF_READNOW. */ | |
5194 | if (!dwarf2_per_objfile->index_table) | |
5195 | return; | |
5196 | ||
ed2dc618 | 5197 | dw_expand_symtabs_matching_file_matcher (dwarf2_per_objfile, file_matcher); |
927aa2e7 JK |
5198 | |
5199 | mapped_index &index = *dwarf2_per_objfile->index_table; | |
5200 | ||
5201 | dw2_expand_symtabs_matching_symbol (index, lookup_name, | |
5202 | symbol_matcher, | |
5203 | kind, [&] (offset_type idx) | |
5204 | { | |
ed2dc618 | 5205 | dw2_expand_marked_cus (dwarf2_per_objfile, idx, file_matcher, |
927aa2e7 JK |
5206 | expansion_notify, kind); |
5207 | }); | |
5208 | } | |
5209 | ||
5210 | /* A helper for dw2_find_pc_sect_compunit_symtab which finds the most specific | |
5211 | symtab. */ | |
5212 | ||
5213 | static struct compunit_symtab * | |
5214 | recursively_find_pc_sect_compunit_symtab (struct compunit_symtab *cust, | |
5215 | CORE_ADDR pc) | |
5216 | { | |
5217 | int i; | |
5218 | ||
5219 | if (COMPUNIT_BLOCKVECTOR (cust) != NULL | |
5220 | && blockvector_contains_pc (COMPUNIT_BLOCKVECTOR (cust), pc)) | |
5221 | return cust; | |
5222 | ||
5223 | if (cust->includes == NULL) | |
5224 | return NULL; | |
5225 | ||
5226 | for (i = 0; cust->includes[i]; ++i) | |
5227 | { | |
5228 | struct compunit_symtab *s = cust->includes[i]; | |
5229 | ||
5230 | s = recursively_find_pc_sect_compunit_symtab (s, pc); | |
5231 | if (s != NULL) | |
5232 | return s; | |
5233 | } | |
5234 | ||
5235 | return NULL; | |
5236 | } | |
5237 | ||
5238 | static struct compunit_symtab * | |
5239 | dw2_find_pc_sect_compunit_symtab (struct objfile *objfile, | |
5240 | struct bound_minimal_symbol msymbol, | |
5241 | CORE_ADDR pc, | |
5242 | struct obj_section *section, | |
5243 | int warn_if_readin) | |
5244 | { | |
5245 | struct dwarf2_per_cu_data *data; | |
5246 | struct compunit_symtab *result; | |
5247 | ||
d320c2b5 | 5248 | if (!objfile->partial_symtabs->psymtabs_addrmap) |
927aa2e7 JK |
5249 | return NULL; |
5250 | ||
79748972 TT |
5251 | CORE_ADDR baseaddr = ANOFFSET (objfile->section_offsets, |
5252 | SECT_OFF_TEXT (objfile)); | |
d320c2b5 TT |
5253 | data = (struct dwarf2_per_cu_data *) addrmap_find |
5254 | (objfile->partial_symtabs->psymtabs_addrmap, pc - baseaddr); | |
927aa2e7 JK |
5255 | if (!data) |
5256 | return NULL; | |
5257 | ||
5258 | if (warn_if_readin && data->v.quick->compunit_symtab) | |
5259 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), | |
5260 | paddress (get_objfile_arch (objfile), pc)); | |
5261 | ||
5262 | result | |
58f0c718 TT |
5263 | = recursively_find_pc_sect_compunit_symtab (dw2_instantiate_symtab (data, |
5264 | false), | |
927aa2e7 JK |
5265 | pc); |
5266 | gdb_assert (result != NULL); | |
5267 | return result; | |
5268 | } | |
5269 | ||
5270 | static void | |
5271 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, | |
5272 | void *data, int need_fullname) | |
5273 | { | |
ed2dc618 SM |
5274 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5275 | = get_dwarf2_per_objfile (objfile); | |
927aa2e7 JK |
5276 | |
5277 | if (!dwarf2_per_objfile->filenames_cache) | |
5278 | { | |
5279 | dwarf2_per_objfile->filenames_cache.emplace (); | |
5280 | ||
5281 | htab_up visited (htab_create_alloc (10, | |
5282 | htab_hash_pointer, htab_eq_pointer, | |
5283 | NULL, xcalloc, xfree)); | |
5284 | ||
5285 | /* The rule is CUs specify all the files, including those used | |
5286 | by any TU, so there's no need to scan TUs here. We can | |
5287 | ignore file names coming from already-expanded CUs. */ | |
5288 | ||
b76e467d | 5289 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 5290 | { |
927aa2e7 JK |
5291 | if (per_cu->v.quick->compunit_symtab) |
5292 | { | |
5293 | void **slot = htab_find_slot (visited.get (), | |
5294 | per_cu->v.quick->file_names, | |
5295 | INSERT); | |
5296 | ||
5297 | *slot = per_cu->v.quick->file_names; | |
5298 | } | |
5299 | } | |
5300 | ||
b76e467d | 5301 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 5302 | { |
927aa2e7 JK |
5303 | /* We only need to look at symtabs not already expanded. */ |
5304 | if (per_cu->v.quick->compunit_symtab) | |
5305 | continue; | |
5306 | ||
b76e467d | 5307 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
927aa2e7 JK |
5308 | if (file_data == NULL) |
5309 | continue; | |
5310 | ||
b76e467d | 5311 | void **slot = htab_find_slot (visited.get (), file_data, INSERT); |
927aa2e7 JK |
5312 | if (*slot) |
5313 | { | |
5314 | /* Already visited. */ | |
5315 | continue; | |
5316 | } | |
5317 | *slot = file_data; | |
5318 | ||
5319 | for (int j = 0; j < file_data->num_file_names; ++j) | |
5320 | { | |
5321 | const char *filename = file_data->file_names[j]; | |
5322 | dwarf2_per_objfile->filenames_cache->seen (filename); | |
5323 | } | |
5324 | } | |
5325 | } | |
5326 | ||
5327 | dwarf2_per_objfile->filenames_cache->traverse ([&] (const char *filename) | |
5328 | { | |
5329 | gdb::unique_xmalloc_ptr<char> this_real_name; | |
5330 | ||
5331 | if (need_fullname) | |
5332 | this_real_name = gdb_realpath (filename); | |
5333 | (*fun) (filename, this_real_name.get (), data); | |
5334 | }); | |
5335 | } | |
5336 | ||
5337 | static int | |
5338 | dw2_has_symbols (struct objfile *objfile) | |
5339 | { | |
5340 | return 1; | |
5341 | } | |
5342 | ||
5343 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
5344 | { | |
5345 | dw2_has_symbols, | |
5346 | dw2_find_last_source_symtab, | |
5347 | dw2_forget_cached_source_info, | |
5348 | dw2_map_symtabs_matching_filename, | |
5349 | dw2_lookup_symbol, | |
5350 | dw2_print_stats, | |
5351 | dw2_dump, | |
927aa2e7 JK |
5352 | dw2_expand_symtabs_for_function, |
5353 | dw2_expand_all_symtabs, | |
5354 | dw2_expand_symtabs_with_fullname, | |
5355 | dw2_map_matching_symbols, | |
5356 | dw2_expand_symtabs_matching, | |
5357 | dw2_find_pc_sect_compunit_symtab, | |
5358 | NULL, | |
5359 | dw2_map_symbol_filenames | |
5360 | }; | |
5361 | ||
5362 | /* DWARF-5 debug_names reader. */ | |
5363 | ||
5364 | /* DWARF-5 augmentation string for GDB's DW_IDX_GNU_* extension. */ | |
5365 | static const gdb_byte dwarf5_augmentation[] = { 'G', 'D', 'B', 0 }; | |
5366 | ||
5367 | /* A helper function that reads the .debug_names section in SECTION | |
5368 | and fills in MAP. FILENAME is the name of the file containing the | |
5369 | section; it is used for error reporting. | |
5370 | ||
5371 | Returns true if all went well, false otherwise. */ | |
5372 | ||
5373 | static bool | |
5374 | read_debug_names_from_section (struct objfile *objfile, | |
5375 | const char *filename, | |
5376 | struct dwarf2_section_info *section, | |
5377 | mapped_debug_names &map) | |
5378 | { | |
5379 | if (dwarf2_section_empty_p (section)) | |
5380 | return false; | |
5381 | ||
5382 | /* Older elfutils strip versions could keep the section in the main | |
5383 | executable while splitting it for the separate debug info file. */ | |
5384 | if ((get_section_flags (section) & SEC_HAS_CONTENTS) == 0) | |
5385 | return false; | |
5386 | ||
5387 | dwarf2_read_section (objfile, section); | |
5388 | ||
5389 | map.dwarf5_byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
5390 | ||
5391 | const gdb_byte *addr = section->buffer; | |
5392 | ||
5393 | bfd *const abfd = get_section_bfd_owner (section); | |
5394 | ||
5395 | unsigned int bytes_read; | |
5396 | LONGEST length = read_initial_length (abfd, addr, &bytes_read); | |
5397 | addr += bytes_read; | |
5398 | ||
5399 | map.dwarf5_is_dwarf64 = bytes_read != 4; | |
5400 | map.offset_size = map.dwarf5_is_dwarf64 ? 8 : 4; | |
5401 | if (bytes_read + length != section->size) | |
5402 | { | |
5403 | /* There may be multiple per-CU indices. */ | |
5404 | warning (_("Section .debug_names in %s length %s does not match " | |
5405 | "section length %s, ignoring .debug_names."), | |
5406 | filename, plongest (bytes_read + length), | |
5407 | pulongest (section->size)); | |
5408 | return false; | |
5409 | } | |
5410 | ||
5411 | /* The version number. */ | |
5412 | uint16_t version = read_2_bytes (abfd, addr); | |
5413 | addr += 2; | |
5414 | if (version != 5) | |
5415 | { | |
5416 | warning (_("Section .debug_names in %s has unsupported version %d, " | |
5417 | "ignoring .debug_names."), | |
5418 | filename, version); | |
5419 | return false; | |
5420 | } | |
5421 | ||
5422 | /* Padding. */ | |
5423 | uint16_t padding = read_2_bytes (abfd, addr); | |
5424 | addr += 2; | |
5425 | if (padding != 0) | |
5426 | { | |
5427 | warning (_("Section .debug_names in %s has unsupported padding %d, " | |
5428 | "ignoring .debug_names."), | |
5429 | filename, padding); | |
5430 | return false; | |
5431 | } | |
5432 | ||
5433 | /* comp_unit_count - The number of CUs in the CU list. */ | |
5434 | map.cu_count = read_4_bytes (abfd, addr); | |
5435 | addr += 4; | |
5436 | ||
5437 | /* local_type_unit_count - The number of TUs in the local TU | |
5438 | list. */ | |
5439 | map.tu_count = read_4_bytes (abfd, addr); | |
5440 | addr += 4; | |
5441 | ||
5442 | /* foreign_type_unit_count - The number of TUs in the foreign TU | |
5443 | list. */ | |
5444 | uint32_t foreign_tu_count = read_4_bytes (abfd, addr); | |
5445 | addr += 4; | |
5446 | if (foreign_tu_count != 0) | |
5447 | { | |
5448 | warning (_("Section .debug_names in %s has unsupported %lu foreign TUs, " | |
5449 | "ignoring .debug_names."), | |
5450 | filename, static_cast<unsigned long> (foreign_tu_count)); | |
5451 | return false; | |
5452 | } | |
5453 | ||
5454 | /* bucket_count - The number of hash buckets in the hash lookup | |
5455 | table. */ | |
5456 | map.bucket_count = read_4_bytes (abfd, addr); | |
5457 | addr += 4; | |
5458 | ||
5459 | /* name_count - The number of unique names in the index. */ | |
5460 | map.name_count = read_4_bytes (abfd, addr); | |
5461 | addr += 4; | |
5462 | ||
5463 | /* abbrev_table_size - The size in bytes of the abbreviations | |
5464 | table. */ | |
5465 | uint32_t abbrev_table_size = read_4_bytes (abfd, addr); | |
5466 | addr += 4; | |
5467 | ||
5468 | /* augmentation_string_size - The size in bytes of the augmentation | |
5469 | string. This value is rounded up to a multiple of 4. */ | |
5470 | uint32_t augmentation_string_size = read_4_bytes (abfd, addr); | |
5471 | addr += 4; | |
5472 | map.augmentation_is_gdb = ((augmentation_string_size | |
5473 | == sizeof (dwarf5_augmentation)) | |
5474 | && memcmp (addr, dwarf5_augmentation, | |
5475 | sizeof (dwarf5_augmentation)) == 0); | |
5476 | augmentation_string_size += (-augmentation_string_size) & 3; | |
5477 | addr += augmentation_string_size; | |
5478 | ||
5479 | /* List of CUs */ | |
5480 | map.cu_table_reordered = addr; | |
5481 | addr += map.cu_count * map.offset_size; | |
5482 | ||
5483 | /* List of Local TUs */ | |
5484 | map.tu_table_reordered = addr; | |
5485 | addr += map.tu_count * map.offset_size; | |
5486 | ||
5487 | /* Hash Lookup Table */ | |
5488 | map.bucket_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5489 | addr += map.bucket_count * 4; | |
5490 | map.hash_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5491 | addr += map.name_count * 4; | |
5492 | ||
5493 | /* Name Table */ | |
5494 | map.name_table_string_offs_reordered = addr; | |
5495 | addr += map.name_count * map.offset_size; | |
5496 | map.name_table_entry_offs_reordered = addr; | |
5497 | addr += map.name_count * map.offset_size; | |
5498 | ||
5499 | const gdb_byte *abbrev_table_start = addr; | |
5500 | for (;;) | |
5501 | { | |
927aa2e7 JK |
5502 | const ULONGEST index_num = read_unsigned_leb128 (abfd, addr, &bytes_read); |
5503 | addr += bytes_read; | |
5504 | if (index_num == 0) | |
5505 | break; | |
5506 | ||
5507 | const auto insertpair | |
5508 | = map.abbrev_map.emplace (index_num, mapped_debug_names::index_val ()); | |
5509 | if (!insertpair.second) | |
5510 | { | |
5511 | warning (_("Section .debug_names in %s has duplicate index %s, " | |
5512 | "ignoring .debug_names."), | |
5513 | filename, pulongest (index_num)); | |
5514 | return false; | |
5515 | } | |
5516 | mapped_debug_names::index_val &indexval = insertpair.first->second; | |
5517 | indexval.dwarf_tag = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5518 | addr += bytes_read; | |
5519 | ||
5520 | for (;;) | |
5521 | { | |
5522 | mapped_debug_names::index_val::attr attr; | |
5523 | attr.dw_idx = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5524 | addr += bytes_read; | |
5525 | attr.form = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5526 | addr += bytes_read; | |
5527 | if (attr.form == DW_FORM_implicit_const) | |
5528 | { | |
5529 | attr.implicit_const = read_signed_leb128 (abfd, addr, | |
5530 | &bytes_read); | |
5531 | addr += bytes_read; | |
5532 | } | |
5533 | if (attr.dw_idx == 0 && attr.form == 0) | |
5534 | break; | |
5535 | indexval.attr_vec.push_back (std::move (attr)); | |
5536 | } | |
5537 | } | |
5538 | if (addr != abbrev_table_start + abbrev_table_size) | |
5539 | { | |
5540 | warning (_("Section .debug_names in %s has abbreviation_table " | |
5541 | "of size %zu vs. written as %u, ignoring .debug_names."), | |
5542 | filename, addr - abbrev_table_start, abbrev_table_size); | |
5543 | return false; | |
5544 | } | |
5545 | map.entry_pool = addr; | |
5546 | ||
5547 | return true; | |
5548 | } | |
5549 | ||
5550 | /* A helper for create_cus_from_debug_names that handles the MAP's CU | |
5551 | list. */ | |
5552 | ||
5553 | static void | |
ed2dc618 | 5554 | create_cus_from_debug_names_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
5555 | const mapped_debug_names &map, |
5556 | dwarf2_section_info §ion, | |
b76e467d | 5557 | bool is_dwz) |
927aa2e7 JK |
5558 | { |
5559 | sect_offset sect_off_prev; | |
5560 | for (uint32_t i = 0; i <= map.cu_count; ++i) | |
5561 | { | |
5562 | sect_offset sect_off_next; | |
5563 | if (i < map.cu_count) | |
5564 | { | |
5565 | sect_off_next | |
5566 | = (sect_offset) (extract_unsigned_integer | |
5567 | (map.cu_table_reordered + i * map.offset_size, | |
5568 | map.offset_size, | |
5569 | map.dwarf5_byte_order)); | |
5570 | } | |
5571 | else | |
5572 | sect_off_next = (sect_offset) section.size; | |
5573 | if (i >= 1) | |
5574 | { | |
5575 | const ULONGEST length = sect_off_next - sect_off_prev; | |
b76e467d | 5576 | dwarf2_per_cu_data *per_cu |
ed2dc618 | 5577 | = create_cu_from_index_list (dwarf2_per_objfile, §ion, is_dwz, |
927aa2e7 | 5578 | sect_off_prev, length); |
b76e467d | 5579 | dwarf2_per_objfile->all_comp_units.push_back (per_cu); |
927aa2e7 JK |
5580 | } |
5581 | sect_off_prev = sect_off_next; | |
5582 | } | |
5583 | } | |
5584 | ||
5585 | /* Read the CU list from the mapped index, and use it to create all | |
ed2dc618 | 5586 | the CU objects for this dwarf2_per_objfile. */ |
927aa2e7 JK |
5587 | |
5588 | static void | |
ed2dc618 | 5589 | create_cus_from_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
5590 | const mapped_debug_names &map, |
5591 | const mapped_debug_names &dwz_map) | |
5592 | { | |
b76e467d SM |
5593 | gdb_assert (dwarf2_per_objfile->all_comp_units.empty ()); |
5594 | dwarf2_per_objfile->all_comp_units.reserve (map.cu_count + dwz_map.cu_count); | |
927aa2e7 | 5595 | |
ed2dc618 SM |
5596 | create_cus_from_debug_names_list (dwarf2_per_objfile, map, |
5597 | dwarf2_per_objfile->info, | |
b76e467d | 5598 | false /* is_dwz */); |
927aa2e7 JK |
5599 | |
5600 | if (dwz_map.cu_count == 0) | |
5601 | return; | |
5602 | ||
ed2dc618 SM |
5603 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
5604 | create_cus_from_debug_names_list (dwarf2_per_objfile, dwz_map, dwz->info, | |
b76e467d | 5605 | true /* is_dwz */); |
927aa2e7 JK |
5606 | } |
5607 | ||
5608 | /* Read .debug_names. If everything went ok, initialize the "quick" | |
5609 | elements of all the CUs and return true. Otherwise, return false. */ | |
5610 | ||
5611 | static bool | |
ed2dc618 | 5612 | dwarf2_read_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile) |
927aa2e7 | 5613 | { |
22ca247e TT |
5614 | std::unique_ptr<mapped_debug_names> map |
5615 | (new mapped_debug_names (dwarf2_per_objfile)); | |
ed2dc618 SM |
5616 | mapped_debug_names dwz_map (dwarf2_per_objfile); |
5617 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
927aa2e7 JK |
5618 | |
5619 | if (!read_debug_names_from_section (objfile, objfile_name (objfile), | |
5620 | &dwarf2_per_objfile->debug_names, | |
22ca247e | 5621 | *map)) |
927aa2e7 JK |
5622 | return false; |
5623 | ||
5624 | /* Don't use the index if it's empty. */ | |
22ca247e | 5625 | if (map->name_count == 0) |
927aa2e7 JK |
5626 | return false; |
5627 | ||
5628 | /* If there is a .dwz file, read it so we can get its CU list as | |
5629 | well. */ | |
ed2dc618 | 5630 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
927aa2e7 JK |
5631 | if (dwz != NULL) |
5632 | { | |
5633 | if (!read_debug_names_from_section (objfile, | |
5634 | bfd_get_filename (dwz->dwz_bfd), | |
5635 | &dwz->debug_names, dwz_map)) | |
5636 | { | |
5637 | warning (_("could not read '.debug_names' section from %s; skipping"), | |
5638 | bfd_get_filename (dwz->dwz_bfd)); | |
5639 | return false; | |
5640 | } | |
5641 | } | |
5642 | ||
22ca247e | 5643 | create_cus_from_debug_names (dwarf2_per_objfile, *map, dwz_map); |
927aa2e7 | 5644 | |
22ca247e | 5645 | if (map->tu_count != 0) |
927aa2e7 JK |
5646 | { |
5647 | /* We can only handle a single .debug_types when we have an | |
5648 | index. */ | |
5649 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) != 1) | |
5650 | return false; | |
5651 | ||
5652 | dwarf2_section_info *section = VEC_index (dwarf2_section_info_def, | |
5653 | dwarf2_per_objfile->types, 0); | |
5654 | ||
5655 | create_signatured_type_table_from_debug_names | |
22ca247e | 5656 | (dwarf2_per_objfile, *map, section, &dwarf2_per_objfile->abbrev); |
927aa2e7 JK |
5657 | } |
5658 | ||
ed2dc618 SM |
5659 | create_addrmap_from_aranges (dwarf2_per_objfile, |
5660 | &dwarf2_per_objfile->debug_aranges); | |
927aa2e7 | 5661 | |
22ca247e | 5662 | dwarf2_per_objfile->debug_names_table = std::move (map); |
927aa2e7 JK |
5663 | dwarf2_per_objfile->using_index = 1; |
5664 | dwarf2_per_objfile->quick_file_names_table = | |
b76e467d | 5665 | create_quick_file_names_table (dwarf2_per_objfile->all_comp_units.size ()); |
927aa2e7 JK |
5666 | |
5667 | return true; | |
5668 | } | |
5669 | ||
927aa2e7 JK |
5670 | /* Type used to manage iterating over all CUs looking for a symbol for |
5671 | .debug_names. */ | |
5672 | ||
5673 | class dw2_debug_names_iterator | |
5674 | { | |
5675 | public: | |
5676 | /* If WANT_SPECIFIC_BLOCK is true, only look for symbols in block | |
5677 | BLOCK_INDEX. Otherwise BLOCK_INDEX is ignored. */ | |
5678 | dw2_debug_names_iterator (const mapped_debug_names &map, | |
5679 | bool want_specific_block, | |
5680 | block_enum block_index, domain_enum domain, | |
5681 | const char *name) | |
5682 | : m_map (map), m_want_specific_block (want_specific_block), | |
5683 | m_block_index (block_index), m_domain (domain), | |
5684 | m_addr (find_vec_in_debug_names (map, name)) | |
5685 | {} | |
5686 | ||
5687 | dw2_debug_names_iterator (const mapped_debug_names &map, | |
5688 | search_domain search, uint32_t namei) | |
5689 | : m_map (map), | |
5690 | m_search (search), | |
5691 | m_addr (find_vec_in_debug_names (map, namei)) | |
5692 | {} | |
5693 | ||
5694 | /* Return the next matching CU or NULL if there are no more. */ | |
5695 | dwarf2_per_cu_data *next (); | |
5696 | ||
5697 | private: | |
5698 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
5699 | const char *name); | |
5700 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
5701 | uint32_t namei); | |
5702 | ||
5703 | /* The internalized form of .debug_names. */ | |
5704 | const mapped_debug_names &m_map; | |
5705 | ||
5706 | /* If true, only look for symbols that match BLOCK_INDEX. */ | |
5707 | const bool m_want_specific_block = false; | |
5708 | ||
5709 | /* One of GLOBAL_BLOCK or STATIC_BLOCK. | |
5710 | Unused if !WANT_SPECIFIC_BLOCK - FIRST_LOCAL_BLOCK is an invalid | |
5711 | value. */ | |
5712 | const block_enum m_block_index = FIRST_LOCAL_BLOCK; | |
5713 | ||
5714 | /* The kind of symbol we're looking for. */ | |
5715 | const domain_enum m_domain = UNDEF_DOMAIN; | |
5716 | const search_domain m_search = ALL_DOMAIN; | |
5717 | ||
5718 | /* The list of CUs from the index entry of the symbol, or NULL if | |
5719 | not found. */ | |
5720 | const gdb_byte *m_addr; | |
5721 | }; | |
5722 | ||
5723 | const char * | |
5724 | mapped_debug_names::namei_to_name (uint32_t namei) const | |
5725 | { | |
5726 | const ULONGEST namei_string_offs | |
5727 | = extract_unsigned_integer ((name_table_string_offs_reordered | |
5728 | + namei * offset_size), | |
5729 | offset_size, | |
5730 | dwarf5_byte_order); | |
5731 | return read_indirect_string_at_offset | |
ed2dc618 | 5732 | (dwarf2_per_objfile, dwarf2_per_objfile->objfile->obfd, namei_string_offs); |
927aa2e7 JK |
5733 | } |
5734 | ||
5735 | /* Find a slot in .debug_names for the object named NAME. If NAME is | |
5736 | found, return pointer to its pool data. If NAME cannot be found, | |
5737 | return NULL. */ | |
5738 | ||
5739 | const gdb_byte * | |
5740 | dw2_debug_names_iterator::find_vec_in_debug_names | |
5741 | (const mapped_debug_names &map, const char *name) | |
5742 | { | |
5743 | int (*cmp) (const char *, const char *); | |
5744 | ||
5745 | if (current_language->la_language == language_cplus | |
5746 | || current_language->la_language == language_fortran | |
5747 | || current_language->la_language == language_d) | |
5748 | { | |
5749 | /* NAME is already canonical. Drop any qualifiers as | |
5750 | .debug_names does not contain any. */ | |
5751 | ||
5752 | if (strchr (name, '(') != NULL) | |
5753 | { | |
5754 | gdb::unique_xmalloc_ptr<char> without_params | |
5755 | = cp_remove_params (name); | |
5756 | ||
5757 | if (without_params != NULL) | |
5758 | { | |
5759 | name = without_params.get(); | |
5760 | } | |
5761 | } | |
5762 | } | |
5763 | ||
5764 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); | |
5765 | ||
5766 | const uint32_t full_hash = dwarf5_djb_hash (name); | |
5767 | uint32_t namei | |
5768 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5769 | (map.bucket_table_reordered | |
5770 | + (full_hash % map.bucket_count)), 4, | |
5771 | map.dwarf5_byte_order); | |
5772 | if (namei == 0) | |
5773 | return NULL; | |
5774 | --namei; | |
5775 | if (namei >= map.name_count) | |
5776 | { | |
b98664d3 | 5777 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5778 | "[in module %s]"), |
5779 | namei, map.name_count, | |
ed2dc618 | 5780 | objfile_name (map.dwarf2_per_objfile->objfile)); |
927aa2e7 JK |
5781 | return NULL; |
5782 | } | |
5783 | ||
5784 | for (;;) | |
5785 | { | |
5786 | const uint32_t namei_full_hash | |
5787 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5788 | (map.hash_table_reordered + namei), 4, | |
5789 | map.dwarf5_byte_order); | |
5790 | if (full_hash % map.bucket_count != namei_full_hash % map.bucket_count) | |
5791 | return NULL; | |
5792 | ||
5793 | if (full_hash == namei_full_hash) | |
5794 | { | |
5795 | const char *const namei_string = map.namei_to_name (namei); | |
5796 | ||
5797 | #if 0 /* An expensive sanity check. */ | |
5798 | if (namei_full_hash != dwarf5_djb_hash (namei_string)) | |
5799 | { | |
b98664d3 | 5800 | complaint (_("Wrong .debug_names hash for string at index %u " |
927aa2e7 JK |
5801 | "[in module %s]"), |
5802 | namei, objfile_name (dwarf2_per_objfile->objfile)); | |
5803 | return NULL; | |
5804 | } | |
5805 | #endif | |
5806 | ||
5807 | if (cmp (namei_string, name) == 0) | |
5808 | { | |
5809 | const ULONGEST namei_entry_offs | |
5810 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5811 | + namei * map.offset_size), | |
5812 | map.offset_size, map.dwarf5_byte_order); | |
5813 | return map.entry_pool + namei_entry_offs; | |
5814 | } | |
5815 | } | |
5816 | ||
5817 | ++namei; | |
5818 | if (namei >= map.name_count) | |
5819 | return NULL; | |
5820 | } | |
5821 | } | |
5822 | ||
5823 | const gdb_byte * | |
5824 | dw2_debug_names_iterator::find_vec_in_debug_names | |
5825 | (const mapped_debug_names &map, uint32_t namei) | |
5826 | { | |
5827 | if (namei >= map.name_count) | |
5828 | { | |
b98664d3 | 5829 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5830 | "[in module %s]"), |
5831 | namei, map.name_count, | |
ed2dc618 | 5832 | objfile_name (map.dwarf2_per_objfile->objfile)); |
927aa2e7 JK |
5833 | return NULL; |
5834 | } | |
5835 | ||
5836 | const ULONGEST namei_entry_offs | |
5837 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5838 | + namei * map.offset_size), | |
5839 | map.offset_size, map.dwarf5_byte_order); | |
5840 | return map.entry_pool + namei_entry_offs; | |
5841 | } | |
5842 | ||
5843 | /* See dw2_debug_names_iterator. */ | |
5844 | ||
5845 | dwarf2_per_cu_data * | |
5846 | dw2_debug_names_iterator::next () | |
5847 | { | |
5848 | if (m_addr == NULL) | |
5849 | return NULL; | |
5850 | ||
ed2dc618 SM |
5851 | struct dwarf2_per_objfile *dwarf2_per_objfile = m_map.dwarf2_per_objfile; |
5852 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
5853 | bfd *const abfd = objfile->obfd; | |
927aa2e7 JK |
5854 | |
5855 | again: | |
5856 | ||
5857 | unsigned int bytes_read; | |
5858 | const ULONGEST abbrev = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5859 | m_addr += bytes_read; | |
5860 | if (abbrev == 0) | |
5861 | return NULL; | |
5862 | ||
5863 | const auto indexval_it = m_map.abbrev_map.find (abbrev); | |
5864 | if (indexval_it == m_map.abbrev_map.cend ()) | |
5865 | { | |
b98664d3 | 5866 | complaint (_("Wrong .debug_names undefined abbrev code %s " |
927aa2e7 | 5867 | "[in module %s]"), |
ed2dc618 | 5868 | pulongest (abbrev), objfile_name (objfile)); |
927aa2e7 JK |
5869 | return NULL; |
5870 | } | |
5871 | const mapped_debug_names::index_val &indexval = indexval_it->second; | |
5872 | bool have_is_static = false; | |
5873 | bool is_static; | |
5874 | dwarf2_per_cu_data *per_cu = NULL; | |
5875 | for (const mapped_debug_names::index_val::attr &attr : indexval.attr_vec) | |
5876 | { | |
5877 | ULONGEST ull; | |
5878 | switch (attr.form) | |
5879 | { | |
5880 | case DW_FORM_implicit_const: | |
5881 | ull = attr.implicit_const; | |
5882 | break; | |
5883 | case DW_FORM_flag_present: | |
5884 | ull = 1; | |
5885 | break; | |
5886 | case DW_FORM_udata: | |
5887 | ull = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5888 | m_addr += bytes_read; | |
5889 | break; | |
5890 | default: | |
b98664d3 | 5891 | complaint (_("Unsupported .debug_names form %s [in module %s]"), |
927aa2e7 | 5892 | dwarf_form_name (attr.form), |
ed2dc618 | 5893 | objfile_name (objfile)); |
927aa2e7 JK |
5894 | return NULL; |
5895 | } | |
5896 | switch (attr.dw_idx) | |
5897 | { | |
5898 | case DW_IDX_compile_unit: | |
5899 | /* Don't crash on bad data. */ | |
b76e467d | 5900 | if (ull >= dwarf2_per_objfile->all_comp_units.size ()) |
927aa2e7 | 5901 | { |
b98664d3 | 5902 | complaint (_(".debug_names entry has bad CU index %s" |
927aa2e7 JK |
5903 | " [in module %s]"), |
5904 | pulongest (ull), | |
5905 | objfile_name (dwarf2_per_objfile->objfile)); | |
5906 | continue; | |
5907 | } | |
ff4c9fec | 5908 | per_cu = dwarf2_per_objfile->get_cutu (ull); |
927aa2e7 | 5909 | break; |
8af5c486 JK |
5910 | case DW_IDX_type_unit: |
5911 | /* Don't crash on bad data. */ | |
b2bdb8cf | 5912 | if (ull >= dwarf2_per_objfile->all_type_units.size ()) |
8af5c486 | 5913 | { |
b98664d3 | 5914 | complaint (_(".debug_names entry has bad TU index %s" |
8af5c486 JK |
5915 | " [in module %s]"), |
5916 | pulongest (ull), | |
5917 | objfile_name (dwarf2_per_objfile->objfile)); | |
5918 | continue; | |
5919 | } | |
ff4c9fec | 5920 | per_cu = &dwarf2_per_objfile->get_tu (ull)->per_cu; |
8af5c486 | 5921 | break; |
927aa2e7 JK |
5922 | case DW_IDX_GNU_internal: |
5923 | if (!m_map.augmentation_is_gdb) | |
5924 | break; | |
5925 | have_is_static = true; | |
5926 | is_static = true; | |
5927 | break; | |
5928 | case DW_IDX_GNU_external: | |
5929 | if (!m_map.augmentation_is_gdb) | |
5930 | break; | |
5931 | have_is_static = true; | |
5932 | is_static = false; | |
5933 | break; | |
5934 | } | |
5935 | } | |
5936 | ||
5937 | /* Skip if already read in. */ | |
5938 | if (per_cu->v.quick->compunit_symtab) | |
5939 | goto again; | |
5940 | ||
5941 | /* Check static vs global. */ | |
5942 | if (have_is_static) | |
5943 | { | |
5944 | const bool want_static = m_block_index != GLOBAL_BLOCK; | |
5945 | if (m_want_specific_block && want_static != is_static) | |
5946 | goto again; | |
5947 | } | |
5948 | ||
5949 | /* Match dw2_symtab_iter_next, symbol_kind | |
5950 | and debug_names::psymbol_tag. */ | |
5951 | switch (m_domain) | |
5952 | { | |
5953 | case VAR_DOMAIN: | |
5954 | switch (indexval.dwarf_tag) | |
5955 | { | |
5956 | case DW_TAG_variable: | |
5957 | case DW_TAG_subprogram: | |
5958 | /* Some types are also in VAR_DOMAIN. */ | |
5959 | case DW_TAG_typedef: | |
5960 | case DW_TAG_structure_type: | |
5961 | break; | |
5962 | default: | |
5963 | goto again; | |
5964 | } | |
5965 | break; | |
5966 | case STRUCT_DOMAIN: | |
5967 | switch (indexval.dwarf_tag) | |
5968 | { | |
5969 | case DW_TAG_typedef: | |
5970 | case DW_TAG_structure_type: | |
5971 | break; | |
5972 | default: | |
5973 | goto again; | |
5974 | } | |
5975 | break; | |
5976 | case LABEL_DOMAIN: | |
5977 | switch (indexval.dwarf_tag) | |
5978 | { | |
5979 | case 0: | |
5980 | case DW_TAG_variable: | |
5981 | break; | |
5982 | default: | |
5983 | goto again; | |
5984 | } | |
5985 | break; | |
5986 | default: | |
5987 | break; | |
5988 | } | |
5989 | ||
5990 | /* Match dw2_expand_symtabs_matching, symbol_kind and | |
5991 | debug_names::psymbol_tag. */ | |
5992 | switch (m_search) | |
4b514bc8 | 5993 | { |
927aa2e7 JK |
5994 | case VARIABLES_DOMAIN: |
5995 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5996 | { |
927aa2e7 JK |
5997 | case DW_TAG_variable: |
5998 | break; | |
5999 | default: | |
6000 | goto again; | |
4b514bc8 | 6001 | } |
927aa2e7 JK |
6002 | break; |
6003 | case FUNCTIONS_DOMAIN: | |
6004 | switch (indexval.dwarf_tag) | |
4b514bc8 | 6005 | { |
927aa2e7 JK |
6006 | case DW_TAG_subprogram: |
6007 | break; | |
6008 | default: | |
6009 | goto again; | |
4b514bc8 | 6010 | } |
927aa2e7 JK |
6011 | break; |
6012 | case TYPES_DOMAIN: | |
6013 | switch (indexval.dwarf_tag) | |
6014 | { | |
6015 | case DW_TAG_typedef: | |
6016 | case DW_TAG_structure_type: | |
6017 | break; | |
6018 | default: | |
6019 | goto again; | |
6020 | } | |
6021 | break; | |
6022 | default: | |
6023 | break; | |
4b514bc8 | 6024 | } |
927aa2e7 JK |
6025 | |
6026 | return per_cu; | |
4b514bc8 | 6027 | } |
61920122 | 6028 | |
927aa2e7 JK |
6029 | static struct compunit_symtab * |
6030 | dw2_debug_names_lookup_symbol (struct objfile *objfile, int block_index_int, | |
6031 | const char *name, domain_enum domain) | |
4b514bc8 | 6032 | { |
927aa2e7 | 6033 | const block_enum block_index = static_cast<block_enum> (block_index_int); |
ed2dc618 SM |
6034 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6035 | = get_dwarf2_per_objfile (objfile); | |
61920122 | 6036 | |
927aa2e7 JK |
6037 | const auto &mapp = dwarf2_per_objfile->debug_names_table; |
6038 | if (!mapp) | |
61920122 | 6039 | { |
927aa2e7 JK |
6040 | /* index is NULL if OBJF_READNOW. */ |
6041 | return NULL; | |
6042 | } | |
6043 | const auto &map = *mapp; | |
9291a0cd | 6044 | |
927aa2e7 JK |
6045 | dw2_debug_names_iterator iter (map, true /* want_specific_block */, |
6046 | block_index, domain, name); | |
9703b513 | 6047 | |
927aa2e7 JK |
6048 | struct compunit_symtab *stab_best = NULL; |
6049 | struct dwarf2_per_cu_data *per_cu; | |
6050 | while ((per_cu = iter.next ()) != NULL) | |
6051 | { | |
6052 | struct symbol *sym, *with_opaque = NULL; | |
58f0c718 | 6053 | struct compunit_symtab *stab = dw2_instantiate_symtab (per_cu, false); |
927aa2e7 JK |
6054 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
6055 | struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); | |
9703b513 | 6056 | |
927aa2e7 JK |
6057 | sym = block_find_symbol (block, name, domain, |
6058 | block_find_non_opaque_type_preferred, | |
6059 | &with_opaque); | |
9703b513 | 6060 | |
927aa2e7 JK |
6061 | /* Some caution must be observed with overloaded functions and |
6062 | methods, since the index will not contain any overload | |
6063 | information (but NAME might contain it). */ | |
a3ec0bb1 | 6064 | |
927aa2e7 JK |
6065 | if (sym != NULL |
6066 | && strcmp_iw (SYMBOL_SEARCH_NAME (sym), name) == 0) | |
6067 | return stab; | |
6068 | if (with_opaque != NULL | |
6069 | && strcmp_iw (SYMBOL_SEARCH_NAME (with_opaque), name) == 0) | |
6070 | stab_best = stab; | |
9703b513 | 6071 | |
927aa2e7 | 6072 | /* Keep looking through other CUs. */ |
9703b513 TT |
6073 | } |
6074 | ||
927aa2e7 | 6075 | return stab_best; |
9703b513 TT |
6076 | } |
6077 | ||
927aa2e7 JK |
6078 | /* This dumps minimal information about .debug_names. It is called |
6079 | via "mt print objfiles". The gdb.dwarf2/gdb-index.exp testcase | |
6080 | uses this to verify that .debug_names has been loaded. */ | |
9291a0cd | 6081 | |
927aa2e7 JK |
6082 | static void |
6083 | dw2_debug_names_dump (struct objfile *objfile) | |
6084 | { | |
ed2dc618 SM |
6085 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6086 | = get_dwarf2_per_objfile (objfile); | |
6087 | ||
927aa2e7 JK |
6088 | gdb_assert (dwarf2_per_objfile->using_index); |
6089 | printf_filtered (".debug_names:"); | |
6090 | if (dwarf2_per_objfile->debug_names_table) | |
6091 | printf_filtered (" exists\n"); | |
6092 | else | |
6093 | printf_filtered (" faked for \"readnow\"\n"); | |
6094 | printf_filtered ("\n"); | |
9291a0cd TT |
6095 | } |
6096 | ||
9291a0cd | 6097 | static void |
927aa2e7 JK |
6098 | dw2_debug_names_expand_symtabs_for_function (struct objfile *objfile, |
6099 | const char *func_name) | |
9291a0cd | 6100 | { |
ed2dc618 SM |
6101 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6102 | = get_dwarf2_per_objfile (objfile); | |
ae2de4f8 | 6103 | |
927aa2e7 JK |
6104 | /* dwarf2_per_objfile->debug_names_table is NULL if OBJF_READNOW. */ |
6105 | if (dwarf2_per_objfile->debug_names_table) | |
24c79950 | 6106 | { |
927aa2e7 | 6107 | const mapped_debug_names &map = *dwarf2_per_objfile->debug_names_table; |
24c79950 | 6108 | |
927aa2e7 JK |
6109 | /* Note: It doesn't matter what we pass for block_index here. */ |
6110 | dw2_debug_names_iterator iter (map, false /* want_specific_block */, | |
6111 | GLOBAL_BLOCK, VAR_DOMAIN, func_name); | |
24c79950 | 6112 | |
927aa2e7 JK |
6113 | struct dwarf2_per_cu_data *per_cu; |
6114 | while ((per_cu = iter.next ()) != NULL) | |
58f0c718 | 6115 | dw2_instantiate_symtab (per_cu, false); |
927aa2e7 JK |
6116 | } |
6117 | } | |
24c79950 | 6118 | |
927aa2e7 JK |
6119 | static void |
6120 | dw2_debug_names_expand_symtabs_matching | |
6121 | (struct objfile *objfile, | |
6122 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
6123 | const lookup_name_info &lookup_name, | |
6124 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
6125 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
6126 | enum search_domain kind) | |
6127 | { | |
ed2dc618 SM |
6128 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6129 | = get_dwarf2_per_objfile (objfile); | |
9291a0cd | 6130 | |
927aa2e7 JK |
6131 | /* debug_names_table is NULL if OBJF_READNOW. */ |
6132 | if (!dwarf2_per_objfile->debug_names_table) | |
6133 | return; | |
9291a0cd | 6134 | |
ed2dc618 | 6135 | dw_expand_symtabs_matching_file_matcher (dwarf2_per_objfile, file_matcher); |
24c79950 | 6136 | |
44ed8f3e | 6137 | mapped_debug_names &map = *dwarf2_per_objfile->debug_names_table; |
bbf2f4df | 6138 | |
44ed8f3e PA |
6139 | dw2_expand_symtabs_matching_symbol (map, lookup_name, |
6140 | symbol_matcher, | |
6141 | kind, [&] (offset_type namei) | |
927aa2e7 | 6142 | { |
927aa2e7 JK |
6143 | /* The name was matched, now expand corresponding CUs that were |
6144 | marked. */ | |
6145 | dw2_debug_names_iterator iter (map, kind, namei); | |
bbf2f4df | 6146 | |
927aa2e7 JK |
6147 | struct dwarf2_per_cu_data *per_cu; |
6148 | while ((per_cu = iter.next ()) != NULL) | |
6149 | dw2_expand_symtabs_matching_one (per_cu, file_matcher, | |
6150 | expansion_notify); | |
44ed8f3e | 6151 | }); |
9291a0cd TT |
6152 | } |
6153 | ||
927aa2e7 | 6154 | const struct quick_symbol_functions dwarf2_debug_names_functions = |
9291a0cd TT |
6155 | { |
6156 | dw2_has_symbols, | |
6157 | dw2_find_last_source_symtab, | |
6158 | dw2_forget_cached_source_info, | |
f8eba3c6 | 6159 | dw2_map_symtabs_matching_filename, |
927aa2e7 | 6160 | dw2_debug_names_lookup_symbol, |
9291a0cd | 6161 | dw2_print_stats, |
927aa2e7 | 6162 | dw2_debug_names_dump, |
927aa2e7 | 6163 | dw2_debug_names_expand_symtabs_for_function, |
9291a0cd | 6164 | dw2_expand_all_symtabs, |
652a8996 | 6165 | dw2_expand_symtabs_with_fullname, |
40658b94 | 6166 | dw2_map_matching_symbols, |
927aa2e7 | 6167 | dw2_debug_names_expand_symtabs_matching, |
43f3e411 | 6168 | dw2_find_pc_sect_compunit_symtab, |
71a3c369 | 6169 | NULL, |
9291a0cd TT |
6170 | dw2_map_symbol_filenames |
6171 | }; | |
6172 | ||
4485a1c1 SM |
6173 | /* Get the content of the .gdb_index section of OBJ. SECTION_OWNER should point |
6174 | to either a dwarf2_per_objfile or dwz_file object. */ | |
6175 | ||
6176 | template <typename T> | |
6177 | static gdb::array_view<const gdb_byte> | |
6178 | get_gdb_index_contents_from_section (objfile *obj, T *section_owner) | |
6179 | { | |
6180 | dwarf2_section_info *section = §ion_owner->gdb_index; | |
6181 | ||
6182 | if (dwarf2_section_empty_p (section)) | |
6183 | return {}; | |
6184 | ||
6185 | /* Older elfutils strip versions could keep the section in the main | |
6186 | executable while splitting it for the separate debug info file. */ | |
6187 | if ((get_section_flags (section) & SEC_HAS_CONTENTS) == 0) | |
6188 | return {}; | |
6189 | ||
6190 | dwarf2_read_section (obj, section); | |
6191 | ||
8bebfcda PA |
6192 | /* dwarf2_section_info::size is a bfd_size_type, while |
6193 | gdb::array_view works with size_t. On 32-bit hosts, with | |
6194 | --enable-64-bit-bfd, bfd_size_type is a 64-bit type, while size_t | |
6195 | is 32-bit. So we need an explicit narrowing conversion here. | |
6196 | This is fine, because it's impossible to allocate or mmap an | |
6197 | array/buffer larger than what size_t can represent. */ | |
6198 | return gdb::make_array_view (section->buffer, section->size); | |
4485a1c1 SM |
6199 | } |
6200 | ||
87d6a7aa SM |
6201 | /* Lookup the index cache for the contents of the index associated to |
6202 | DWARF2_OBJ. */ | |
6203 | ||
6204 | static gdb::array_view<const gdb_byte> | |
6205 | get_gdb_index_contents_from_cache (objfile *obj, dwarf2_per_objfile *dwarf2_obj) | |
6206 | { | |
6207 | const bfd_build_id *build_id = build_id_bfd_get (obj->obfd); | |
6208 | if (build_id == nullptr) | |
6209 | return {}; | |
6210 | ||
6211 | return global_index_cache.lookup_gdb_index (build_id, | |
6212 | &dwarf2_obj->index_cache_res); | |
6213 | } | |
6214 | ||
6215 | /* Same as the above, but for DWZ. */ | |
6216 | ||
6217 | static gdb::array_view<const gdb_byte> | |
6218 | get_gdb_index_contents_from_cache_dwz (objfile *obj, dwz_file *dwz) | |
6219 | { | |
6220 | const bfd_build_id *build_id = build_id_bfd_get (dwz->dwz_bfd.get ()); | |
6221 | if (build_id == nullptr) | |
6222 | return {}; | |
6223 | ||
6224 | return global_index_cache.lookup_gdb_index (build_id, &dwz->index_cache_res); | |
6225 | } | |
6226 | ||
3c0aa29a | 6227 | /* See symfile.h. */ |
9291a0cd | 6228 | |
3c0aa29a PA |
6229 | bool |
6230 | dwarf2_initialize_objfile (struct objfile *objfile, dw_index_kind *index_kind) | |
9291a0cd | 6231 | { |
ed2dc618 SM |
6232 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6233 | = get_dwarf2_per_objfile (objfile); | |
6234 | ||
9291a0cd TT |
6235 | /* If we're about to read full symbols, don't bother with the |
6236 | indices. In this case we also don't care if some other debug | |
6237 | format is making psymtabs, because they are all about to be | |
6238 | expanded anyway. */ | |
6239 | if ((objfile->flags & OBJF_READNOW)) | |
6240 | { | |
9291a0cd | 6241 | dwarf2_per_objfile->using_index = 1; |
ed2dc618 SM |
6242 | create_all_comp_units (dwarf2_per_objfile); |
6243 | create_all_type_units (dwarf2_per_objfile); | |
b76e467d SM |
6244 | dwarf2_per_objfile->quick_file_names_table |
6245 | = create_quick_file_names_table | |
6246 | (dwarf2_per_objfile->all_comp_units.size ()); | |
9291a0cd | 6247 | |
b76e467d | 6248 | for (int i = 0; i < (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 6249 | + dwarf2_per_objfile->all_type_units.size ()); ++i) |
9291a0cd | 6250 | { |
ff4c9fec | 6251 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (i); |
9291a0cd | 6252 | |
e254ef6a DE |
6253 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
6254 | struct dwarf2_per_cu_quick_data); | |
9291a0cd TT |
6255 | } |
6256 | ||
6257 | /* Return 1 so that gdb sees the "quick" functions. However, | |
6258 | these functions will be no-ops because we will have expanded | |
6259 | all symtabs. */ | |
3c0aa29a PA |
6260 | *index_kind = dw_index_kind::GDB_INDEX; |
6261 | return true; | |
9291a0cd TT |
6262 | } |
6263 | ||
ed2dc618 | 6264 | if (dwarf2_read_debug_names (dwarf2_per_objfile)) |
3c0aa29a PA |
6265 | { |
6266 | *index_kind = dw_index_kind::DEBUG_NAMES; | |
6267 | return true; | |
6268 | } | |
927aa2e7 | 6269 | |
4485a1c1 SM |
6270 | if (dwarf2_read_gdb_index (dwarf2_per_objfile, |
6271 | get_gdb_index_contents_from_section<struct dwarf2_per_objfile>, | |
6272 | get_gdb_index_contents_from_section<dwz_file>)) | |
3c0aa29a PA |
6273 | { |
6274 | *index_kind = dw_index_kind::GDB_INDEX; | |
6275 | return true; | |
6276 | } | |
9291a0cd | 6277 | |
87d6a7aa SM |
6278 | /* ... otherwise, try to find the index in the index cache. */ |
6279 | if (dwarf2_read_gdb_index (dwarf2_per_objfile, | |
6280 | get_gdb_index_contents_from_cache, | |
6281 | get_gdb_index_contents_from_cache_dwz)) | |
6282 | { | |
6283 | global_index_cache.hit (); | |
6284 | *index_kind = dw_index_kind::GDB_INDEX; | |
6285 | return true; | |
6286 | } | |
6287 | ||
6288 | global_index_cache.miss (); | |
3c0aa29a | 6289 | return false; |
9291a0cd TT |
6290 | } |
6291 | ||
6292 | \f | |
6293 | ||
dce234bc PP |
6294 | /* Build a partial symbol table. */ |
6295 | ||
6296 | void | |
f29dff0a | 6297 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 6298 | { |
ed2dc618 SM |
6299 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6300 | = get_dwarf2_per_objfile (objfile); | |
c9bf0622 | 6301 | |
6eee24ce | 6302 | init_psymbol_list (objfile, 1024); |
c906108c | 6303 | |
492d29ea | 6304 | TRY |
c9bf0622 TT |
6305 | { |
6306 | /* This isn't really ideal: all the data we allocate on the | |
6307 | objfile's obstack is still uselessly kept around. However, | |
6308 | freeing it seems unsafe. */ | |
906768f9 | 6309 | psymtab_discarder psymtabs (objfile); |
ed2dc618 | 6310 | dwarf2_build_psymtabs_hard (dwarf2_per_objfile); |
906768f9 | 6311 | psymtabs.keep (); |
87d6a7aa SM |
6312 | |
6313 | /* (maybe) store an index in the cache. */ | |
6314 | global_index_cache.store (dwarf2_per_objfile); | |
c9bf0622 | 6315 | } |
492d29ea PA |
6316 | CATCH (except, RETURN_MASK_ERROR) |
6317 | { | |
6318 | exception_print (gdb_stderr, except); | |
6319 | } | |
6320 | END_CATCH | |
c906108c | 6321 | } |
c906108c | 6322 | |
1ce1cefd DE |
6323 | /* Return the total length of the CU described by HEADER. */ |
6324 | ||
6325 | static unsigned int | |
6326 | get_cu_length (const struct comp_unit_head *header) | |
6327 | { | |
6328 | return header->initial_length_size + header->length; | |
6329 | } | |
6330 | ||
9c541725 | 6331 | /* Return TRUE if SECT_OFF is within CU_HEADER. */ |
45452591 | 6332 | |
9c541725 PA |
6333 | static inline bool |
6334 | offset_in_cu_p (const comp_unit_head *cu_header, sect_offset sect_off) | |
45452591 | 6335 | { |
9c541725 PA |
6336 | sect_offset bottom = cu_header->sect_off; |
6337 | sect_offset top = cu_header->sect_off + get_cu_length (cu_header); | |
9a619af0 | 6338 | |
9c541725 | 6339 | return sect_off >= bottom && sect_off < top; |
45452591 DE |
6340 | } |
6341 | ||
3b80fe9b DE |
6342 | /* Find the base address of the compilation unit for range lists and |
6343 | location lists. It will normally be specified by DW_AT_low_pc. | |
6344 | In DWARF-3 draft 4, the base address could be overridden by | |
6345 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
6346 | compilation units with discontinuous ranges. */ | |
6347 | ||
6348 | static void | |
6349 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
6350 | { | |
6351 | struct attribute *attr; | |
6352 | ||
6353 | cu->base_known = 0; | |
6354 | cu->base_address = 0; | |
6355 | ||
6356 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
6357 | if (attr) | |
6358 | { | |
31aa7e4e | 6359 | cu->base_address = attr_value_as_address (attr); |
3b80fe9b DE |
6360 | cu->base_known = 1; |
6361 | } | |
6362 | else | |
6363 | { | |
6364 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
6365 | if (attr) | |
6366 | { | |
31aa7e4e | 6367 | cu->base_address = attr_value_as_address (attr); |
3b80fe9b DE |
6368 | cu->base_known = 1; |
6369 | } | |
6370 | } | |
6371 | } | |
6372 | ||
93311388 | 6373 | /* Read in the comp unit header information from the debug_info at info_ptr. |
43988095 | 6374 | Use rcuh_kind::COMPILE as the default type if not known by the caller. |
93311388 DE |
6375 | NOTE: This leaves members offset, first_die_offset to be filled in |
6376 | by the caller. */ | |
107d2387 | 6377 | |
d521ce57 | 6378 | static const gdb_byte * |
107d2387 | 6379 | read_comp_unit_head (struct comp_unit_head *cu_header, |
43988095 JK |
6380 | const gdb_byte *info_ptr, |
6381 | struct dwarf2_section_info *section, | |
6382 | rcuh_kind section_kind) | |
107d2387 AC |
6383 | { |
6384 | int signed_addr; | |
891d2f0b | 6385 | unsigned int bytes_read; |
43988095 JK |
6386 | const char *filename = get_section_file_name (section); |
6387 | bfd *abfd = get_section_bfd_owner (section); | |
c764a876 DE |
6388 | |
6389 | cu_header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
6390 | cu_header->initial_length_size = bytes_read; | |
6391 | cu_header->offset_size = (bytes_read == 4) ? 4 : 8; | |
613e1657 | 6392 | info_ptr += bytes_read; |
107d2387 | 6393 | cu_header->version = read_2_bytes (abfd, info_ptr); |
1ea5da02 TV |
6394 | if (cu_header->version < 2 || cu_header->version > 5) |
6395 | error (_("Dwarf Error: wrong version in compilation unit header " | |
6396 | "(is %d, should be 2, 3, 4 or 5) [in module %s]"), | |
6397 | cu_header->version, filename); | |
107d2387 | 6398 | info_ptr += 2; |
43988095 JK |
6399 | if (cu_header->version < 5) |
6400 | switch (section_kind) | |
6401 | { | |
6402 | case rcuh_kind::COMPILE: | |
6403 | cu_header->unit_type = DW_UT_compile; | |
6404 | break; | |
6405 | case rcuh_kind::TYPE: | |
6406 | cu_header->unit_type = DW_UT_type; | |
6407 | break; | |
6408 | default: | |
6409 | internal_error (__FILE__, __LINE__, | |
6410 | _("read_comp_unit_head: invalid section_kind")); | |
6411 | } | |
6412 | else | |
6413 | { | |
6414 | cu_header->unit_type = static_cast<enum dwarf_unit_type> | |
6415 | (read_1_byte (abfd, info_ptr)); | |
6416 | info_ptr += 1; | |
6417 | switch (cu_header->unit_type) | |
6418 | { | |
6419 | case DW_UT_compile: | |
6420 | if (section_kind != rcuh_kind::COMPILE) | |
6421 | error (_("Dwarf Error: wrong unit_type in compilation unit header " | |
6422 | "(is DW_UT_compile, should be DW_UT_type) [in module %s]"), | |
6423 | filename); | |
6424 | break; | |
6425 | case DW_UT_type: | |
6426 | section_kind = rcuh_kind::TYPE; | |
6427 | break; | |
6428 | default: | |
6429 | error (_("Dwarf Error: wrong unit_type in compilation unit header " | |
6430 | "(is %d, should be %d or %d) [in module %s]"), | |
6431 | cu_header->unit_type, DW_UT_compile, DW_UT_type, filename); | |
6432 | } | |
6433 | ||
6434 | cu_header->addr_size = read_1_byte (abfd, info_ptr); | |
6435 | info_ptr += 1; | |
6436 | } | |
9c541725 PA |
6437 | cu_header->abbrev_sect_off = (sect_offset) read_offset (abfd, info_ptr, |
6438 | cu_header, | |
6439 | &bytes_read); | |
613e1657 | 6440 | info_ptr += bytes_read; |
43988095 JK |
6441 | if (cu_header->version < 5) |
6442 | { | |
6443 | cu_header->addr_size = read_1_byte (abfd, info_ptr); | |
6444 | info_ptr += 1; | |
6445 | } | |
107d2387 AC |
6446 | signed_addr = bfd_get_sign_extend_vma (abfd); |
6447 | if (signed_addr < 0) | |
8e65ff28 | 6448 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 6449 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 | 6450 | cu_header->signed_addr_p = signed_addr; |
c764a876 | 6451 | |
43988095 JK |
6452 | if (section_kind == rcuh_kind::TYPE) |
6453 | { | |
6454 | LONGEST type_offset; | |
6455 | ||
6456 | cu_header->signature = read_8_bytes (abfd, info_ptr); | |
6457 | info_ptr += 8; | |
6458 | ||
6459 | type_offset = read_offset (abfd, info_ptr, cu_header, &bytes_read); | |
6460 | info_ptr += bytes_read; | |
9c541725 PA |
6461 | cu_header->type_cu_offset_in_tu = (cu_offset) type_offset; |
6462 | if (to_underlying (cu_header->type_cu_offset_in_tu) != type_offset) | |
43988095 JK |
6463 | error (_("Dwarf Error: Too big type_offset in compilation unit " |
6464 | "header (is %s) [in module %s]"), plongest (type_offset), | |
6465 | filename); | |
6466 | } | |
6467 | ||
107d2387 AC |
6468 | return info_ptr; |
6469 | } | |
6470 | ||
36586728 TT |
6471 | /* Helper function that returns the proper abbrev section for |
6472 | THIS_CU. */ | |
6473 | ||
6474 | static struct dwarf2_section_info * | |
6475 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
6476 | { | |
6477 | struct dwarf2_section_info *abbrev; | |
ed2dc618 | 6478 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
36586728 TT |
6479 | |
6480 | if (this_cu->is_dwz) | |
ed2dc618 | 6481 | abbrev = &dwarf2_get_dwz_file (dwarf2_per_objfile)->abbrev; |
36586728 TT |
6482 | else |
6483 | abbrev = &dwarf2_per_objfile->abbrev; | |
6484 | ||
6485 | return abbrev; | |
6486 | } | |
6487 | ||
9ff913ba DE |
6488 | /* Subroutine of read_and_check_comp_unit_head and |
6489 | read_and_check_type_unit_head to simplify them. | |
6490 | Perform various error checking on the header. */ | |
6491 | ||
6492 | static void | |
ed2dc618 SM |
6493 | error_check_comp_unit_head (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6494 | struct comp_unit_head *header, | |
4bdcc0c1 DE |
6495 | struct dwarf2_section_info *section, |
6496 | struct dwarf2_section_info *abbrev_section) | |
9ff913ba | 6497 | { |
a32a8923 | 6498 | const char *filename = get_section_file_name (section); |
9ff913ba | 6499 | |
9c541725 | 6500 | if (to_underlying (header->abbrev_sect_off) |
36586728 | 6501 | >= dwarf2_section_size (dwarf2_per_objfile->objfile, abbrev_section)) |
9d8780f0 SM |
6502 | error (_("Dwarf Error: bad offset (%s) in compilation unit header " |
6503 | "(offset %s + 6) [in module %s]"), | |
6504 | sect_offset_str (header->abbrev_sect_off), | |
6505 | sect_offset_str (header->sect_off), | |
9ff913ba DE |
6506 | filename); |
6507 | ||
9c541725 | 6508 | /* Cast to ULONGEST to use 64-bit arithmetic when possible to |
9ff913ba | 6509 | avoid potential 32-bit overflow. */ |
9c541725 | 6510 | if (((ULONGEST) header->sect_off + get_cu_length (header)) |
9ff913ba | 6511 | > section->size) |
9c541725 | 6512 | error (_("Dwarf Error: bad length (0x%x) in compilation unit header " |
9d8780f0 SM |
6513 | "(offset %s + 0) [in module %s]"), |
6514 | header->length, sect_offset_str (header->sect_off), | |
9ff913ba DE |
6515 | filename); |
6516 | } | |
6517 | ||
6518 | /* Read in a CU/TU header and perform some basic error checking. | |
6519 | The contents of the header are stored in HEADER. | |
6520 | The result is a pointer to the start of the first DIE. */ | |
adabb602 | 6521 | |
d521ce57 | 6522 | static const gdb_byte * |
ed2dc618 SM |
6523 | read_and_check_comp_unit_head (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6524 | struct comp_unit_head *header, | |
9ff913ba | 6525 | struct dwarf2_section_info *section, |
4bdcc0c1 | 6526 | struct dwarf2_section_info *abbrev_section, |
d521ce57 | 6527 | const gdb_byte *info_ptr, |
43988095 | 6528 | rcuh_kind section_kind) |
72bf9492 | 6529 | { |
d521ce57 | 6530 | const gdb_byte *beg_of_comp_unit = info_ptr; |
72bf9492 | 6531 | |
9c541725 | 6532 | header->sect_off = (sect_offset) (beg_of_comp_unit - section->buffer); |
adabb602 | 6533 | |
43988095 | 6534 | info_ptr = read_comp_unit_head (header, info_ptr, section, section_kind); |
9ff913ba | 6535 | |
9c541725 | 6536 | header->first_die_cu_offset = (cu_offset) (info_ptr - beg_of_comp_unit); |
348e048f | 6537 | |
ed2dc618 SM |
6538 | error_check_comp_unit_head (dwarf2_per_objfile, header, section, |
6539 | abbrev_section); | |
9ff913ba DE |
6540 | |
6541 | return info_ptr; | |
348e048f DE |
6542 | } |
6543 | ||
f4dc4d17 DE |
6544 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
6545 | ||
6546 | static sect_offset | |
ed2dc618 SM |
6547 | read_abbrev_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6548 | struct dwarf2_section_info *section, | |
9c541725 | 6549 | sect_offset sect_off) |
f4dc4d17 | 6550 | { |
a32a8923 | 6551 | bfd *abfd = get_section_bfd_owner (section); |
d521ce57 | 6552 | const gdb_byte *info_ptr; |
ac298888 | 6553 | unsigned int initial_length_size, offset_size; |
43988095 | 6554 | uint16_t version; |
f4dc4d17 DE |
6555 | |
6556 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
9c541725 | 6557 | info_ptr = section->buffer + to_underlying (sect_off); |
ac298888 | 6558 | read_initial_length (abfd, info_ptr, &initial_length_size); |
f4dc4d17 | 6559 | offset_size = initial_length_size == 4 ? 4 : 8; |
43988095 JK |
6560 | info_ptr += initial_length_size; |
6561 | ||
6562 | version = read_2_bytes (abfd, info_ptr); | |
6563 | info_ptr += 2; | |
6564 | if (version >= 5) | |
6565 | { | |
6566 | /* Skip unit type and address size. */ | |
6567 | info_ptr += 2; | |
6568 | } | |
6569 | ||
9c541725 | 6570 | return (sect_offset) read_offset_1 (abfd, info_ptr, offset_size); |
f4dc4d17 DE |
6571 | } |
6572 | ||
aaa75496 JB |
6573 | /* Allocate a new partial symtab for file named NAME and mark this new |
6574 | partial symtab as being an include of PST. */ | |
6575 | ||
6576 | static void | |
d521ce57 | 6577 | dwarf2_create_include_psymtab (const char *name, struct partial_symtab *pst, |
aaa75496 JB |
6578 | struct objfile *objfile) |
6579 | { | |
6580 | struct partial_symtab *subpst = allocate_psymtab (name, objfile); | |
6581 | ||
fbd9ab74 JK |
6582 | if (!IS_ABSOLUTE_PATH (subpst->filename)) |
6583 | { | |
6584 | /* It shares objfile->objfile_obstack. */ | |
6585 | subpst->dirname = pst->dirname; | |
6586 | } | |
6587 | ||
a9342b62 | 6588 | subpst->dependencies = objfile->partial_symtabs->allocate_dependencies (1); |
aaa75496 JB |
6589 | subpst->dependencies[0] = pst; |
6590 | subpst->number_of_dependencies = 1; | |
6591 | ||
aaa75496 | 6592 | subpst->read_symtab = pst->read_symtab; |
aaa75496 JB |
6593 | |
6594 | /* No private part is necessary for include psymtabs. This property | |
6595 | can be used to differentiate between such include psymtabs and | |
10b3939b | 6596 | the regular ones. */ |
58a9656e | 6597 | subpst->read_symtab_private = NULL; |
aaa75496 JB |
6598 | } |
6599 | ||
6600 | /* Read the Line Number Program data and extract the list of files | |
6601 | included by the source file represented by PST. Build an include | |
d85a05f0 | 6602 | partial symtab for each of these included files. */ |
aaa75496 JB |
6603 | |
6604 | static void | |
6605 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 DE |
6606 | struct die_info *die, |
6607 | struct partial_symtab *pst) | |
aaa75496 | 6608 | { |
fff8551c | 6609 | line_header_up lh; |
d85a05f0 | 6610 | struct attribute *attr; |
aaa75496 | 6611 | |
d85a05f0 DJ |
6612 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
6613 | if (attr) | |
9c541725 | 6614 | lh = dwarf_decode_line_header ((sect_offset) DW_UNSND (attr), cu); |
aaa75496 JB |
6615 | if (lh == NULL) |
6616 | return; /* No linetable, so no includes. */ | |
6617 | ||
79748972 TT |
6618 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). Also note |
6619 | that we pass in the raw text_low here; that is ok because we're | |
6620 | only decoding the line table to make include partial symtabs, and | |
6621 | so the addresses aren't really used. */ | |
4ae976d1 | 6622 | dwarf_decode_lines (lh.get (), pst->dirname, cu, pst, |
79748972 | 6623 | pst->raw_text_low (), 1); |
aaa75496 JB |
6624 | } |
6625 | ||
348e048f | 6626 | static hashval_t |
52dc124a | 6627 | hash_signatured_type (const void *item) |
348e048f | 6628 | { |
9a3c8263 SM |
6629 | const struct signatured_type *sig_type |
6630 | = (const struct signatured_type *) item; | |
9a619af0 | 6631 | |
348e048f | 6632 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 6633 | return sig_type->signature; |
348e048f DE |
6634 | } |
6635 | ||
6636 | static int | |
52dc124a | 6637 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f | 6638 | { |
9a3c8263 SM |
6639 | const struct signatured_type *lhs = (const struct signatured_type *) item_lhs; |
6640 | const struct signatured_type *rhs = (const struct signatured_type *) item_rhs; | |
9a619af0 | 6641 | |
348e048f DE |
6642 | return lhs->signature == rhs->signature; |
6643 | } | |
6644 | ||
1fd400ff TT |
6645 | /* Allocate a hash table for signatured types. */ |
6646 | ||
6647 | static htab_t | |
673bfd45 | 6648 | allocate_signatured_type_table (struct objfile *objfile) |
1fd400ff TT |
6649 | { |
6650 | return htab_create_alloc_ex (41, | |
52dc124a DE |
6651 | hash_signatured_type, |
6652 | eq_signatured_type, | |
1fd400ff TT |
6653 | NULL, |
6654 | &objfile->objfile_obstack, | |
6655 | hashtab_obstack_allocate, | |
6656 | dummy_obstack_deallocate); | |
6657 | } | |
6658 | ||
d467dd73 | 6659 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
6660 | |
6661 | static int | |
d467dd73 | 6662 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff | 6663 | { |
9a3c8263 | 6664 | struct signatured_type *sigt = (struct signatured_type *) *slot; |
b2bdb8cf SM |
6665 | std::vector<signatured_type *> *all_type_units |
6666 | = (std::vector<signatured_type *> *) datum; | |
1fd400ff | 6667 | |
b2bdb8cf | 6668 | all_type_units->push_back (sigt); |
1fd400ff TT |
6669 | |
6670 | return 1; | |
6671 | } | |
6672 | ||
78d4d2c5 | 6673 | /* A helper for create_debug_types_hash_table. Read types from SECTION |
43988095 JK |
6674 | and fill them into TYPES_HTAB. It will process only type units, |
6675 | therefore DW_UT_type. */ | |
c88ee1f0 | 6676 | |
78d4d2c5 | 6677 | static void |
ed2dc618 SM |
6678 | create_debug_type_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6679 | struct dwo_file *dwo_file, | |
43988095 JK |
6680 | dwarf2_section_info *section, htab_t &types_htab, |
6681 | rcuh_kind section_kind) | |
348e048f | 6682 | { |
3019eac3 | 6683 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
4bdcc0c1 | 6684 | struct dwarf2_section_info *abbrev_section; |
78d4d2c5 JK |
6685 | bfd *abfd; |
6686 | const gdb_byte *info_ptr, *end_ptr; | |
348e048f | 6687 | |
4bdcc0c1 DE |
6688 | abbrev_section = (dwo_file != NULL |
6689 | ? &dwo_file->sections.abbrev | |
6690 | : &dwarf2_per_objfile->abbrev); | |
6691 | ||
b4f54984 | 6692 | if (dwarf_read_debug) |
43988095 JK |
6693 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", |
6694 | get_section_name (section), | |
a32a8923 | 6695 | get_section_file_name (abbrev_section)); |
09406207 | 6696 | |
78d4d2c5 JK |
6697 | dwarf2_read_section (objfile, section); |
6698 | info_ptr = section->buffer; | |
348e048f | 6699 | |
78d4d2c5 JK |
6700 | if (info_ptr == NULL) |
6701 | return; | |
348e048f | 6702 | |
78d4d2c5 JK |
6703 | /* We can't set abfd until now because the section may be empty or |
6704 | not present, in which case the bfd is unknown. */ | |
6705 | abfd = get_section_bfd_owner (section); | |
348e048f | 6706 | |
78d4d2c5 JK |
6707 | /* We don't use init_cutu_and_read_dies_simple, or some such, here |
6708 | because we don't need to read any dies: the signature is in the | |
6709 | header. */ | |
3019eac3 | 6710 | |
78d4d2c5 JK |
6711 | end_ptr = info_ptr + section->size; |
6712 | while (info_ptr < end_ptr) | |
6713 | { | |
78d4d2c5 JK |
6714 | struct signatured_type *sig_type; |
6715 | struct dwo_unit *dwo_tu; | |
6716 | void **slot; | |
6717 | const gdb_byte *ptr = info_ptr; | |
6718 | struct comp_unit_head header; | |
6719 | unsigned int length; | |
8b70b953 | 6720 | |
9c541725 | 6721 | sect_offset sect_off = (sect_offset) (ptr - section->buffer); |
348e048f | 6722 | |
a49dd8dd JK |
6723 | /* Initialize it due to a false compiler warning. */ |
6724 | header.signature = -1; | |
9c541725 | 6725 | header.type_cu_offset_in_tu = (cu_offset) -1; |
a49dd8dd | 6726 | |
78d4d2c5 JK |
6727 | /* We need to read the type's signature in order to build the hash |
6728 | table, but we don't need anything else just yet. */ | |
348e048f | 6729 | |
ed2dc618 | 6730 | ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, &header, section, |
43988095 | 6731 | abbrev_section, ptr, section_kind); |
348e048f | 6732 | |
78d4d2c5 | 6733 | length = get_cu_length (&header); |
6caca83c | 6734 | |
78d4d2c5 JK |
6735 | /* Skip dummy type units. */ |
6736 | if (ptr >= info_ptr + length | |
43988095 JK |
6737 | || peek_abbrev_code (abfd, ptr) == 0 |
6738 | || header.unit_type != DW_UT_type) | |
78d4d2c5 JK |
6739 | { |
6740 | info_ptr += length; | |
6741 | continue; | |
6742 | } | |
dee91e82 | 6743 | |
78d4d2c5 JK |
6744 | if (types_htab == NULL) |
6745 | { | |
6746 | if (dwo_file) | |
6747 | types_htab = allocate_dwo_unit_table (objfile); | |
6748 | else | |
6749 | types_htab = allocate_signatured_type_table (objfile); | |
6750 | } | |
8b70b953 | 6751 | |
78d4d2c5 JK |
6752 | if (dwo_file) |
6753 | { | |
6754 | sig_type = NULL; | |
6755 | dwo_tu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6756 | struct dwo_unit); | |
6757 | dwo_tu->dwo_file = dwo_file; | |
43988095 | 6758 | dwo_tu->signature = header.signature; |
9c541725 | 6759 | dwo_tu->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 | 6760 | dwo_tu->section = section; |
9c541725 | 6761 | dwo_tu->sect_off = sect_off; |
78d4d2c5 JK |
6762 | dwo_tu->length = length; |
6763 | } | |
6764 | else | |
6765 | { | |
6766 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
6767 | The real type_offset is in the DWO file. */ | |
6768 | dwo_tu = NULL; | |
6769 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6770 | struct signatured_type); | |
43988095 | 6771 | sig_type->signature = header.signature; |
9c541725 | 6772 | sig_type->type_offset_in_tu = header.type_cu_offset_in_tu; |
e3b94546 | 6773 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
78d4d2c5 JK |
6774 | sig_type->per_cu.is_debug_types = 1; |
6775 | sig_type->per_cu.section = section; | |
9c541725 | 6776 | sig_type->per_cu.sect_off = sect_off; |
78d4d2c5 JK |
6777 | sig_type->per_cu.length = length; |
6778 | } | |
6779 | ||
6780 | slot = htab_find_slot (types_htab, | |
6781 | dwo_file ? (void*) dwo_tu : (void *) sig_type, | |
6782 | INSERT); | |
6783 | gdb_assert (slot != NULL); | |
6784 | if (*slot != NULL) | |
6785 | { | |
9c541725 | 6786 | sect_offset dup_sect_off; |
0349ea22 | 6787 | |
3019eac3 DE |
6788 | if (dwo_file) |
6789 | { | |
78d4d2c5 JK |
6790 | const struct dwo_unit *dup_tu |
6791 | = (const struct dwo_unit *) *slot; | |
6792 | ||
9c541725 | 6793 | dup_sect_off = dup_tu->sect_off; |
3019eac3 DE |
6794 | } |
6795 | else | |
6796 | { | |
78d4d2c5 JK |
6797 | const struct signatured_type *dup_tu |
6798 | = (const struct signatured_type *) *slot; | |
6799 | ||
9c541725 | 6800 | dup_sect_off = dup_tu->per_cu.sect_off; |
3019eac3 | 6801 | } |
8b70b953 | 6802 | |
b98664d3 | 6803 | complaint (_("debug type entry at offset %s is duplicate to" |
9d8780f0 SM |
6804 | " the entry at offset %s, signature %s"), |
6805 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
43988095 | 6806 | hex_string (header.signature)); |
78d4d2c5 JK |
6807 | } |
6808 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; | |
3019eac3 | 6809 | |
78d4d2c5 | 6810 | if (dwarf_read_debug > 1) |
9d8780f0 SM |
6811 | fprintf_unfiltered (gdb_stdlog, " offset %s, signature %s\n", |
6812 | sect_offset_str (sect_off), | |
43988095 | 6813 | hex_string (header.signature)); |
3019eac3 | 6814 | |
78d4d2c5 JK |
6815 | info_ptr += length; |
6816 | } | |
6817 | } | |
3019eac3 | 6818 | |
78d4d2c5 JK |
6819 | /* Create the hash table of all entries in the .debug_types |
6820 | (or .debug_types.dwo) section(s). | |
6821 | If reading a DWO file, then DWO_FILE is a pointer to the DWO file object, | |
6822 | otherwise it is NULL. | |
b3c8eb43 | 6823 | |
78d4d2c5 | 6824 | The result is a pointer to the hash table or NULL if there are no types. |
348e048f | 6825 | |
78d4d2c5 | 6826 | Note: This function processes DWO files only, not DWP files. */ |
348e048f | 6827 | |
78d4d2c5 | 6828 | static void |
ed2dc618 SM |
6829 | create_debug_types_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6830 | struct dwo_file *dwo_file, | |
78d4d2c5 JK |
6831 | VEC (dwarf2_section_info_def) *types, |
6832 | htab_t &types_htab) | |
6833 | { | |
6834 | int ix; | |
6835 | struct dwarf2_section_info *section; | |
6836 | ||
6837 | if (VEC_empty (dwarf2_section_info_def, types)) | |
6838 | return; | |
348e048f | 6839 | |
78d4d2c5 JK |
6840 | for (ix = 0; |
6841 | VEC_iterate (dwarf2_section_info_def, types, ix, section); | |
6842 | ++ix) | |
ed2dc618 SM |
6843 | create_debug_type_hash_table (dwarf2_per_objfile, dwo_file, section, |
6844 | types_htab, rcuh_kind::TYPE); | |
3019eac3 DE |
6845 | } |
6846 | ||
6847 | /* Create the hash table of all entries in the .debug_types section, | |
6848 | and initialize all_type_units. | |
6849 | The result is zero if there is an error (e.g. missing .debug_types section), | |
6850 | otherwise non-zero. */ | |
6851 | ||
6852 | static int | |
ed2dc618 | 6853 | create_all_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
3019eac3 | 6854 | { |
78d4d2c5 | 6855 | htab_t types_htab = NULL; |
3019eac3 | 6856 | |
ed2dc618 SM |
6857 | create_debug_type_hash_table (dwarf2_per_objfile, NULL, |
6858 | &dwarf2_per_objfile->info, types_htab, | |
43988095 | 6859 | rcuh_kind::COMPILE); |
ed2dc618 SM |
6860 | create_debug_types_hash_table (dwarf2_per_objfile, NULL, |
6861 | dwarf2_per_objfile->types, types_htab); | |
3019eac3 DE |
6862 | if (types_htab == NULL) |
6863 | { | |
6864 | dwarf2_per_objfile->signatured_types = NULL; | |
6865 | return 0; | |
6866 | } | |
6867 | ||
348e048f DE |
6868 | dwarf2_per_objfile->signatured_types = types_htab; |
6869 | ||
b2bdb8cf SM |
6870 | gdb_assert (dwarf2_per_objfile->all_type_units.empty ()); |
6871 | dwarf2_per_objfile->all_type_units.reserve (htab_elements (types_htab)); | |
6872 | ||
6873 | htab_traverse_noresize (types_htab, add_signatured_type_cu_to_table, | |
6874 | &dwarf2_per_objfile->all_type_units); | |
1fd400ff | 6875 | |
348e048f DE |
6876 | return 1; |
6877 | } | |
6878 | ||
6aa5f3a6 DE |
6879 | /* Add an entry for signature SIG to dwarf2_per_objfile->signatured_types. |
6880 | If SLOT is non-NULL, it is the entry to use in the hash table. | |
6881 | Otherwise we find one. */ | |
6882 | ||
6883 | static struct signatured_type * | |
ed2dc618 SM |
6884 | add_type_unit (struct dwarf2_per_objfile *dwarf2_per_objfile, ULONGEST sig, |
6885 | void **slot) | |
6aa5f3a6 DE |
6886 | { |
6887 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6aa5f3a6 | 6888 | |
b2bdb8cf SM |
6889 | if (dwarf2_per_objfile->all_type_units.size () |
6890 | == dwarf2_per_objfile->all_type_units.capacity ()) | |
6891 | ++dwarf2_per_objfile->tu_stats.nr_all_type_units_reallocs; | |
6aa5f3a6 | 6892 | |
b2bdb8cf SM |
6893 | signatured_type *sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
6894 | struct signatured_type); | |
6895 | ||
6896 | dwarf2_per_objfile->all_type_units.push_back (sig_type); | |
6aa5f3a6 DE |
6897 | sig_type->signature = sig; |
6898 | sig_type->per_cu.is_debug_types = 1; | |
6899 | if (dwarf2_per_objfile->using_index) | |
6900 | { | |
6901 | sig_type->per_cu.v.quick = | |
6902 | OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6903 | struct dwarf2_per_cu_quick_data); | |
6904 | } | |
6905 | ||
6906 | if (slot == NULL) | |
6907 | { | |
6908 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, | |
6909 | sig_type, INSERT); | |
6910 | } | |
6911 | gdb_assert (*slot == NULL); | |
6912 | *slot = sig_type; | |
6913 | /* The rest of sig_type must be filled in by the caller. */ | |
6914 | return sig_type; | |
6915 | } | |
6916 | ||
a2ce51a0 DE |
6917 | /* Subroutine of lookup_dwo_signatured_type and lookup_dwp_signatured_type. |
6918 | Fill in SIG_ENTRY with DWO_ENTRY. */ | |
6919 | ||
6920 | static void | |
ed2dc618 | 6921 | fill_in_sig_entry_from_dwo_entry (struct dwarf2_per_objfile *dwarf2_per_objfile, |
a2ce51a0 DE |
6922 | struct signatured_type *sig_entry, |
6923 | struct dwo_unit *dwo_entry) | |
6924 | { | |
7ee85ab1 | 6925 | /* Make sure we're not clobbering something we don't expect to. */ |
a2ce51a0 DE |
6926 | gdb_assert (! sig_entry->per_cu.queued); |
6927 | gdb_assert (sig_entry->per_cu.cu == NULL); | |
6aa5f3a6 DE |
6928 | if (dwarf2_per_objfile->using_index) |
6929 | { | |
6930 | gdb_assert (sig_entry->per_cu.v.quick != NULL); | |
43f3e411 | 6931 | gdb_assert (sig_entry->per_cu.v.quick->compunit_symtab == NULL); |
6aa5f3a6 DE |
6932 | } |
6933 | else | |
6934 | gdb_assert (sig_entry->per_cu.v.psymtab == NULL); | |
a2ce51a0 | 6935 | gdb_assert (sig_entry->signature == dwo_entry->signature); |
9c541725 | 6936 | gdb_assert (to_underlying (sig_entry->type_offset_in_section) == 0); |
a2ce51a0 | 6937 | gdb_assert (sig_entry->type_unit_group == NULL); |
7ee85ab1 DE |
6938 | gdb_assert (sig_entry->dwo_unit == NULL); |
6939 | ||
6940 | sig_entry->per_cu.section = dwo_entry->section; | |
9c541725 | 6941 | sig_entry->per_cu.sect_off = dwo_entry->sect_off; |
7ee85ab1 DE |
6942 | sig_entry->per_cu.length = dwo_entry->length; |
6943 | sig_entry->per_cu.reading_dwo_directly = 1; | |
e3b94546 | 6944 | sig_entry->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
a2ce51a0 DE |
6945 | sig_entry->type_offset_in_tu = dwo_entry->type_offset_in_tu; |
6946 | sig_entry->dwo_unit = dwo_entry; | |
6947 | } | |
6948 | ||
6949 | /* Subroutine of lookup_signatured_type. | |
7ee85ab1 DE |
6950 | If we haven't read the TU yet, create the signatured_type data structure |
6951 | for a TU to be read in directly from a DWO file, bypassing the stub. | |
6952 | This is the "Stay in DWO Optimization": When there is no DWP file and we're | |
6953 | using .gdb_index, then when reading a CU we want to stay in the DWO file | |
6954 | containing that CU. Otherwise we could end up reading several other DWO | |
6955 | files (due to comdat folding) to process the transitive closure of all the | |
6956 | mentioned TUs, and that can be slow. The current DWO file will have every | |
6957 | type signature that it needs. | |
a2ce51a0 DE |
6958 | We only do this for .gdb_index because in the psymtab case we already have |
6959 | to read all the DWOs to build the type unit groups. */ | |
6960 | ||
6961 | static struct signatured_type * | |
6962 | lookup_dwo_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6963 | { | |
518817b3 SM |
6964 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6965 | = cu->per_cu->dwarf2_per_objfile; | |
a2ce51a0 DE |
6966 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
6967 | struct dwo_file *dwo_file; | |
6968 | struct dwo_unit find_dwo_entry, *dwo_entry; | |
6969 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6970 | void **slot; |
a2ce51a0 DE |
6971 | |
6972 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
6973 | ||
6aa5f3a6 DE |
6974 | /* If TU skeletons have been removed then we may not have read in any |
6975 | TUs yet. */ | |
6976 | if (dwarf2_per_objfile->signatured_types == NULL) | |
6977 | { | |
6978 | dwarf2_per_objfile->signatured_types | |
6979 | = allocate_signatured_type_table (objfile); | |
6980 | } | |
a2ce51a0 DE |
6981 | |
6982 | /* We only ever need to read in one copy of a signatured type. | |
6aa5f3a6 DE |
6983 | Use the global signatured_types array to do our own comdat-folding |
6984 | of types. If this is the first time we're reading this TU, and | |
6985 | the TU has an entry in .gdb_index, replace the recorded data from | |
6986 | .gdb_index with this TU. */ | |
a2ce51a0 | 6987 | |
a2ce51a0 | 6988 | find_sig_entry.signature = sig; |
6aa5f3a6 DE |
6989 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, |
6990 | &find_sig_entry, INSERT); | |
9a3c8263 | 6991 | sig_entry = (struct signatured_type *) *slot; |
7ee85ab1 DE |
6992 | |
6993 | /* We can get here with the TU already read, *or* in the process of being | |
6aa5f3a6 DE |
6994 | read. Don't reassign the global entry to point to this DWO if that's |
6995 | the case. Also note that if the TU is already being read, it may not | |
6996 | have come from a DWO, the program may be a mix of Fission-compiled | |
6997 | code and non-Fission-compiled code. */ | |
6998 | ||
6999 | /* Have we already tried to read this TU? | |
7000 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
7001 | needn't exist in the global table yet). */ | |
7002 | if (sig_entry != NULL && sig_entry->per_cu.tu_read) | |
a2ce51a0 DE |
7003 | return sig_entry; |
7004 | ||
6aa5f3a6 DE |
7005 | /* Note: cu->dwo_unit is the dwo_unit that references this TU, not the |
7006 | dwo_unit of the TU itself. */ | |
7007 | dwo_file = cu->dwo_unit->dwo_file; | |
7008 | ||
a2ce51a0 DE |
7009 | /* Ok, this is the first time we're reading this TU. */ |
7010 | if (dwo_file->tus == NULL) | |
7011 | return NULL; | |
7012 | find_dwo_entry.signature = sig; | |
9a3c8263 | 7013 | dwo_entry = (struct dwo_unit *) htab_find (dwo_file->tus, &find_dwo_entry); |
a2ce51a0 DE |
7014 | if (dwo_entry == NULL) |
7015 | return NULL; | |
7016 | ||
6aa5f3a6 DE |
7017 | /* If the global table doesn't have an entry for this TU, add one. */ |
7018 | if (sig_entry == NULL) | |
ed2dc618 | 7019 | sig_entry = add_type_unit (dwarf2_per_objfile, sig, slot); |
6aa5f3a6 | 7020 | |
ed2dc618 | 7021 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, sig_entry, dwo_entry); |
89e63ee4 | 7022 | sig_entry->per_cu.tu_read = 1; |
a2ce51a0 DE |
7023 | return sig_entry; |
7024 | } | |
7025 | ||
a2ce51a0 DE |
7026 | /* Subroutine of lookup_signatured_type. |
7027 | Look up the type for signature SIG, and if we can't find SIG in .gdb_index | |
6aa5f3a6 DE |
7028 | then try the DWP file. If the TU stub (skeleton) has been removed then |
7029 | it won't be in .gdb_index. */ | |
a2ce51a0 DE |
7030 | |
7031 | static struct signatured_type * | |
7032 | lookup_dwp_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
7033 | { | |
518817b3 SM |
7034 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7035 | = cu->per_cu->dwarf2_per_objfile; | |
a2ce51a0 | 7036 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
ed2dc618 | 7037 | struct dwp_file *dwp_file = get_dwp_file (dwarf2_per_objfile); |
a2ce51a0 DE |
7038 | struct dwo_unit *dwo_entry; |
7039 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 7040 | void **slot; |
a2ce51a0 DE |
7041 | |
7042 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
7043 | gdb_assert (dwp_file != NULL); | |
7044 | ||
6aa5f3a6 DE |
7045 | /* If TU skeletons have been removed then we may not have read in any |
7046 | TUs yet. */ | |
7047 | if (dwarf2_per_objfile->signatured_types == NULL) | |
a2ce51a0 | 7048 | { |
6aa5f3a6 DE |
7049 | dwarf2_per_objfile->signatured_types |
7050 | = allocate_signatured_type_table (objfile); | |
a2ce51a0 DE |
7051 | } |
7052 | ||
6aa5f3a6 DE |
7053 | find_sig_entry.signature = sig; |
7054 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, | |
7055 | &find_sig_entry, INSERT); | |
9a3c8263 | 7056 | sig_entry = (struct signatured_type *) *slot; |
6aa5f3a6 DE |
7057 | |
7058 | /* Have we already tried to read this TU? | |
7059 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
7060 | needn't exist in the global table yet). */ | |
7061 | if (sig_entry != NULL) | |
7062 | return sig_entry; | |
7063 | ||
a2ce51a0 DE |
7064 | if (dwp_file->tus == NULL) |
7065 | return NULL; | |
ed2dc618 | 7066 | dwo_entry = lookup_dwo_unit_in_dwp (dwarf2_per_objfile, dwp_file, NULL, |
57d63ce2 | 7067 | sig, 1 /* is_debug_types */); |
a2ce51a0 DE |
7068 | if (dwo_entry == NULL) |
7069 | return NULL; | |
7070 | ||
ed2dc618 SM |
7071 | sig_entry = add_type_unit (dwarf2_per_objfile, sig, slot); |
7072 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, sig_entry, dwo_entry); | |
a2ce51a0 | 7073 | |
a2ce51a0 DE |
7074 | return sig_entry; |
7075 | } | |
7076 | ||
380bca97 | 7077 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
5a8b3f62 DE |
7078 | Returns NULL if signature SIG is not present in the table. |
7079 | It is up to the caller to complain about this. */ | |
348e048f DE |
7080 | |
7081 | static struct signatured_type * | |
a2ce51a0 | 7082 | lookup_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) |
348e048f | 7083 | { |
518817b3 SM |
7084 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7085 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 7086 | |
a2ce51a0 DE |
7087 | if (cu->dwo_unit |
7088 | && dwarf2_per_objfile->using_index) | |
7089 | { | |
7090 | /* We're in a DWO/DWP file, and we're using .gdb_index. | |
7091 | These cases require special processing. */ | |
ed2dc618 | 7092 | if (get_dwp_file (dwarf2_per_objfile) == NULL) |
a2ce51a0 DE |
7093 | return lookup_dwo_signatured_type (cu, sig); |
7094 | else | |
7095 | return lookup_dwp_signatured_type (cu, sig); | |
7096 | } | |
7097 | else | |
7098 | { | |
7099 | struct signatured_type find_entry, *entry; | |
348e048f | 7100 | |
a2ce51a0 DE |
7101 | if (dwarf2_per_objfile->signatured_types == NULL) |
7102 | return NULL; | |
7103 | find_entry.signature = sig; | |
9a3c8263 SM |
7104 | entry = ((struct signatured_type *) |
7105 | htab_find (dwarf2_per_objfile->signatured_types, &find_entry)); | |
a2ce51a0 DE |
7106 | return entry; |
7107 | } | |
348e048f | 7108 | } |
42e7ad6c DE |
7109 | \f |
7110 | /* Low level DIE reading support. */ | |
348e048f | 7111 | |
d85a05f0 DJ |
7112 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
7113 | ||
7114 | static void | |
7115 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 7116 | struct dwarf2_cu *cu, |
3019eac3 | 7117 | struct dwarf2_section_info *section, |
685af9cd TT |
7118 | struct dwo_file *dwo_file, |
7119 | struct abbrev_table *abbrev_table) | |
d85a05f0 | 7120 | { |
fceca515 | 7121 | gdb_assert (section->readin && section->buffer != NULL); |
a32a8923 | 7122 | reader->abfd = get_section_bfd_owner (section); |
d85a05f0 | 7123 | reader->cu = cu; |
3019eac3 | 7124 | reader->dwo_file = dwo_file; |
dee91e82 DE |
7125 | reader->die_section = section; |
7126 | reader->buffer = section->buffer; | |
f664829e | 7127 | reader->buffer_end = section->buffer + section->size; |
a2ce51a0 | 7128 | reader->comp_dir = NULL; |
685af9cd | 7129 | reader->abbrev_table = abbrev_table; |
d85a05f0 DJ |
7130 | } |
7131 | ||
b0c7bfa9 DE |
7132 | /* Subroutine of init_cutu_and_read_dies to simplify it. |
7133 | Read in the rest of a CU/TU top level DIE from DWO_UNIT. | |
7134 | There's just a lot of work to do, and init_cutu_and_read_dies is big enough | |
7135 | already. | |
7136 | ||
7137 | STUB_COMP_UNIT_DIE is for the stub DIE, we copy over certain attributes | |
7138 | from it to the DIE in the DWO. If NULL we are skipping the stub. | |
a2ce51a0 DE |
7139 | STUB_COMP_DIR is similar to STUB_COMP_UNIT_DIE: When reading a TU directly |
7140 | from the DWO file, bypassing the stub, it contains the DW_AT_comp_dir | |
c54a1dd8 DE |
7141 | attribute of the referencing CU. At most one of STUB_COMP_UNIT_DIE and |
7142 | STUB_COMP_DIR may be non-NULL. | |
b0c7bfa9 DE |
7143 | *RESULT_READER,*RESULT_INFO_PTR,*RESULT_COMP_UNIT_DIE,*RESULT_HAS_CHILDREN |
7144 | are filled in with the info of the DIE from the DWO file. | |
685af9cd TT |
7145 | *RESULT_DWO_ABBREV_TABLE will be filled in with the abbrev table allocated |
7146 | from the dwo. Since *RESULT_READER references this abbrev table, it must be | |
7147 | kept around for at least as long as *RESULT_READER. | |
7148 | ||
b0c7bfa9 DE |
7149 | The result is non-zero if a valid (non-dummy) DIE was found. */ |
7150 | ||
7151 | static int | |
7152 | read_cutu_die_from_dwo (struct dwarf2_per_cu_data *this_cu, | |
7153 | struct dwo_unit *dwo_unit, | |
b0c7bfa9 | 7154 | struct die_info *stub_comp_unit_die, |
a2ce51a0 | 7155 | const char *stub_comp_dir, |
b0c7bfa9 | 7156 | struct die_reader_specs *result_reader, |
d521ce57 | 7157 | const gdb_byte **result_info_ptr, |
b0c7bfa9 | 7158 | struct die_info **result_comp_unit_die, |
685af9cd TT |
7159 | int *result_has_children, |
7160 | abbrev_table_up *result_dwo_abbrev_table) | |
b0c7bfa9 | 7161 | { |
ed2dc618 | 7162 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
b0c7bfa9 DE |
7163 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
7164 | struct dwarf2_cu *cu = this_cu->cu; | |
b0c7bfa9 | 7165 | bfd *abfd; |
d521ce57 | 7166 | const gdb_byte *begin_info_ptr, *info_ptr; |
b0c7bfa9 DE |
7167 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; |
7168 | int i,num_extra_attrs; | |
7169 | struct dwarf2_section_info *dwo_abbrev_section; | |
7170 | struct attribute *attr; | |
7171 | struct die_info *comp_unit_die; | |
7172 | ||
b0aeadb3 DE |
7173 | /* At most one of these may be provided. */ |
7174 | gdb_assert ((stub_comp_unit_die != NULL) + (stub_comp_dir != NULL) <= 1); | |
a2ce51a0 | 7175 | |
b0c7bfa9 DE |
7176 | /* These attributes aren't processed until later: |
7177 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
0d60c288 DE |
7178 | DW_AT_comp_dir is used now, to find the DWO file, but it is also |
7179 | referenced later. However, these attributes are found in the stub | |
7180 | which we won't have later. In order to not impose this complication | |
7181 | on the rest of the code, we read them here and copy them to the | |
7182 | DWO CU/TU die. */ | |
b0c7bfa9 DE |
7183 | |
7184 | stmt_list = NULL; | |
7185 | low_pc = NULL; | |
7186 | high_pc = NULL; | |
7187 | ranges = NULL; | |
7188 | comp_dir = NULL; | |
7189 | ||
7190 | if (stub_comp_unit_die != NULL) | |
7191 | { | |
7192 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
7193 | DWO file. */ | |
7194 | if (! this_cu->is_debug_types) | |
7195 | stmt_list = dwarf2_attr (stub_comp_unit_die, DW_AT_stmt_list, cu); | |
7196 | low_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_low_pc, cu); | |
7197 | high_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_high_pc, cu); | |
7198 | ranges = dwarf2_attr (stub_comp_unit_die, DW_AT_ranges, cu); | |
7199 | comp_dir = dwarf2_attr (stub_comp_unit_die, DW_AT_comp_dir, cu); | |
7200 | ||
7201 | /* There should be a DW_AT_addr_base attribute here (if needed). | |
7202 | We need the value before we can process DW_FORM_GNU_addr_index. */ | |
7203 | cu->addr_base = 0; | |
7204 | attr = dwarf2_attr (stub_comp_unit_die, DW_AT_GNU_addr_base, cu); | |
7205 | if (attr) | |
7206 | cu->addr_base = DW_UNSND (attr); | |
7207 | ||
7208 | /* There should be a DW_AT_ranges_base attribute here (if needed). | |
7209 | We need the value before we can process DW_AT_ranges. */ | |
7210 | cu->ranges_base = 0; | |
7211 | attr = dwarf2_attr (stub_comp_unit_die, DW_AT_GNU_ranges_base, cu); | |
7212 | if (attr) | |
7213 | cu->ranges_base = DW_UNSND (attr); | |
7214 | } | |
a2ce51a0 DE |
7215 | else if (stub_comp_dir != NULL) |
7216 | { | |
7217 | /* Reconstruct the comp_dir attribute to simplify the code below. */ | |
8d749320 | 7218 | comp_dir = XOBNEW (&cu->comp_unit_obstack, struct attribute); |
a2ce51a0 DE |
7219 | comp_dir->name = DW_AT_comp_dir; |
7220 | comp_dir->form = DW_FORM_string; | |
7221 | DW_STRING_IS_CANONICAL (comp_dir) = 0; | |
7222 | DW_STRING (comp_dir) = stub_comp_dir; | |
7223 | } | |
b0c7bfa9 DE |
7224 | |
7225 | /* Set up for reading the DWO CU/TU. */ | |
7226 | cu->dwo_unit = dwo_unit; | |
685af9cd | 7227 | dwarf2_section_info *section = dwo_unit->section; |
b0c7bfa9 | 7228 | dwarf2_read_section (objfile, section); |
a32a8923 | 7229 | abfd = get_section_bfd_owner (section); |
9c541725 PA |
7230 | begin_info_ptr = info_ptr = (section->buffer |
7231 | + to_underlying (dwo_unit->sect_off)); | |
b0c7bfa9 | 7232 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; |
b0c7bfa9 DE |
7233 | |
7234 | if (this_cu->is_debug_types) | |
7235 | { | |
b0c7bfa9 DE |
7236 | struct signatured_type *sig_type = (struct signatured_type *) this_cu; |
7237 | ||
ed2dc618 SM |
7238 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7239 | &cu->header, section, | |
b0c7bfa9 | 7240 | dwo_abbrev_section, |
43988095 | 7241 | info_ptr, rcuh_kind::TYPE); |
a2ce51a0 | 7242 | /* This is not an assert because it can be caused by bad debug info. */ |
43988095 | 7243 | if (sig_type->signature != cu->header.signature) |
a2ce51a0 DE |
7244 | { |
7245 | error (_("Dwarf Error: signature mismatch %s vs %s while reading" | |
9d8780f0 | 7246 | " TU at offset %s [in module %s]"), |
a2ce51a0 | 7247 | hex_string (sig_type->signature), |
43988095 | 7248 | hex_string (cu->header.signature), |
9d8780f0 | 7249 | sect_offset_str (dwo_unit->sect_off), |
a2ce51a0 DE |
7250 | bfd_get_filename (abfd)); |
7251 | } | |
9c541725 | 7252 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
7253 | /* For DWOs coming from DWP files, we don't know the CU length |
7254 | nor the type's offset in the TU until now. */ | |
7255 | dwo_unit->length = get_cu_length (&cu->header); | |
9c541725 | 7256 | dwo_unit->type_offset_in_tu = cu->header.type_cu_offset_in_tu; |
b0c7bfa9 DE |
7257 | |
7258 | /* Establish the type offset that can be used to lookup the type. | |
7259 | For DWO files, we don't know it until now. */ | |
9c541725 PA |
7260 | sig_type->type_offset_in_section |
7261 | = dwo_unit->sect_off + to_underlying (dwo_unit->type_offset_in_tu); | |
b0c7bfa9 DE |
7262 | } |
7263 | else | |
7264 | { | |
ed2dc618 SM |
7265 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7266 | &cu->header, section, | |
b0c7bfa9 | 7267 | dwo_abbrev_section, |
43988095 | 7268 | info_ptr, rcuh_kind::COMPILE); |
9c541725 | 7269 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
7270 | /* For DWOs coming from DWP files, we don't know the CU length |
7271 | until now. */ | |
7272 | dwo_unit->length = get_cu_length (&cu->header); | |
7273 | } | |
7274 | ||
685af9cd TT |
7275 | *result_dwo_abbrev_table |
7276 | = abbrev_table_read_table (dwarf2_per_objfile, dwo_abbrev_section, | |
7277 | cu->header.abbrev_sect_off); | |
7278 | init_cu_die_reader (result_reader, cu, section, dwo_unit->dwo_file, | |
7279 | result_dwo_abbrev_table->get ()); | |
b0c7bfa9 DE |
7280 | |
7281 | /* Read in the die, but leave space to copy over the attributes | |
7282 | from the stub. This has the benefit of simplifying the rest of | |
7283 | the code - all the work to maintain the illusion of a single | |
7284 | DW_TAG_{compile,type}_unit DIE is done here. */ | |
7285 | num_extra_attrs = ((stmt_list != NULL) | |
7286 | + (low_pc != NULL) | |
7287 | + (high_pc != NULL) | |
7288 | + (ranges != NULL) | |
7289 | + (comp_dir != NULL)); | |
7290 | info_ptr = read_full_die_1 (result_reader, result_comp_unit_die, info_ptr, | |
7291 | result_has_children, num_extra_attrs); | |
7292 | ||
7293 | /* Copy over the attributes from the stub to the DIE we just read in. */ | |
7294 | comp_unit_die = *result_comp_unit_die; | |
7295 | i = comp_unit_die->num_attrs; | |
7296 | if (stmt_list != NULL) | |
7297 | comp_unit_die->attrs[i++] = *stmt_list; | |
7298 | if (low_pc != NULL) | |
7299 | comp_unit_die->attrs[i++] = *low_pc; | |
7300 | if (high_pc != NULL) | |
7301 | comp_unit_die->attrs[i++] = *high_pc; | |
7302 | if (ranges != NULL) | |
7303 | comp_unit_die->attrs[i++] = *ranges; | |
7304 | if (comp_dir != NULL) | |
7305 | comp_unit_die->attrs[i++] = *comp_dir; | |
7306 | comp_unit_die->num_attrs += num_extra_attrs; | |
7307 | ||
b4f54984 | 7308 | if (dwarf_die_debug) |
bf6af496 DE |
7309 | { |
7310 | fprintf_unfiltered (gdb_stdlog, | |
7311 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 7312 | get_section_name (section), |
bf6af496 DE |
7313 | (unsigned) (begin_info_ptr - section->buffer), |
7314 | bfd_get_filename (abfd)); | |
b4f54984 | 7315 | dump_die (comp_unit_die, dwarf_die_debug); |
bf6af496 DE |
7316 | } |
7317 | ||
a2ce51a0 DE |
7318 | /* Save the comp_dir attribute. If there is no DWP file then we'll read |
7319 | TUs by skipping the stub and going directly to the entry in the DWO file. | |
7320 | However, skipping the stub means we won't get DW_AT_comp_dir, so we have | |
7321 | to get it via circuitous means. Blech. */ | |
7322 | if (comp_dir != NULL) | |
7323 | result_reader->comp_dir = DW_STRING (comp_dir); | |
7324 | ||
b0c7bfa9 DE |
7325 | /* Skip dummy compilation units. */ |
7326 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
7327 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
7328 | return 0; | |
7329 | ||
7330 | *result_info_ptr = info_ptr; | |
7331 | return 1; | |
7332 | } | |
7333 | ||
7334 | /* Subroutine of init_cutu_and_read_dies to simplify it. | |
7335 | Look up the DWO unit specified by COMP_UNIT_DIE of THIS_CU. | |
6a506a2d | 7336 | Returns NULL if the specified DWO unit cannot be found. */ |
b0c7bfa9 DE |
7337 | |
7338 | static struct dwo_unit * | |
7339 | lookup_dwo_unit (struct dwarf2_per_cu_data *this_cu, | |
7340 | struct die_info *comp_unit_die) | |
7341 | { | |
7342 | struct dwarf2_cu *cu = this_cu->cu; | |
b0c7bfa9 DE |
7343 | ULONGEST signature; |
7344 | struct dwo_unit *dwo_unit; | |
7345 | const char *comp_dir, *dwo_name; | |
7346 | ||
a2ce51a0 DE |
7347 | gdb_assert (cu != NULL); |
7348 | ||
b0c7bfa9 | 7349 | /* Yeah, we look dwo_name up again, but it simplifies the code. */ |
7d45c7c3 KB |
7350 | dwo_name = dwarf2_string_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); |
7351 | comp_dir = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); | |
b0c7bfa9 DE |
7352 | |
7353 | if (this_cu->is_debug_types) | |
7354 | { | |
7355 | struct signatured_type *sig_type; | |
7356 | ||
7357 | /* Since this_cu is the first member of struct signatured_type, | |
7358 | we can go from a pointer to one to a pointer to the other. */ | |
7359 | sig_type = (struct signatured_type *) this_cu; | |
7360 | signature = sig_type->signature; | |
7361 | dwo_unit = lookup_dwo_type_unit (sig_type, dwo_name, comp_dir); | |
7362 | } | |
7363 | else | |
7364 | { | |
7365 | struct attribute *attr; | |
7366 | ||
7367 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
7368 | if (! attr) | |
7369 | error (_("Dwarf Error: missing dwo_id for dwo_name %s" | |
7370 | " [in module %s]"), | |
e3b94546 | 7371 | dwo_name, objfile_name (this_cu->dwarf2_per_objfile->objfile)); |
b0c7bfa9 DE |
7372 | signature = DW_UNSND (attr); |
7373 | dwo_unit = lookup_dwo_comp_unit (this_cu, dwo_name, comp_dir, | |
7374 | signature); | |
7375 | } | |
7376 | ||
b0c7bfa9 DE |
7377 | return dwo_unit; |
7378 | } | |
7379 | ||
a2ce51a0 | 7380 | /* Subroutine of init_cutu_and_read_dies to simplify it. |
6aa5f3a6 | 7381 | See it for a description of the parameters. |
fcd3b13d | 7382 | Read a TU directly from a DWO file, bypassing the stub. */ |
a2ce51a0 DE |
7383 | |
7384 | static void | |
6aa5f3a6 DE |
7385 | init_tu_and_read_dwo_dies (struct dwarf2_per_cu_data *this_cu, |
7386 | int use_existing_cu, int keep, | |
a2ce51a0 DE |
7387 | die_reader_func_ftype *die_reader_func, |
7388 | void *data) | |
7389 | { | |
fcd3b13d | 7390 | std::unique_ptr<dwarf2_cu> new_cu; |
a2ce51a0 | 7391 | struct signatured_type *sig_type; |
a2ce51a0 DE |
7392 | struct die_reader_specs reader; |
7393 | const gdb_byte *info_ptr; | |
7394 | struct die_info *comp_unit_die; | |
7395 | int has_children; | |
ed2dc618 | 7396 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
a2ce51a0 DE |
7397 | |
7398 | /* Verify we can do the following downcast, and that we have the | |
7399 | data we need. */ | |
7400 | gdb_assert (this_cu->is_debug_types && this_cu->reading_dwo_directly); | |
7401 | sig_type = (struct signatured_type *) this_cu; | |
7402 | gdb_assert (sig_type->dwo_unit != NULL); | |
7403 | ||
6aa5f3a6 DE |
7404 | if (use_existing_cu && this_cu->cu != NULL) |
7405 | { | |
7406 | gdb_assert (this_cu->cu->dwo_unit == sig_type->dwo_unit); | |
6aa5f3a6 DE |
7407 | /* There's no need to do the rereading_dwo_cu handling that |
7408 | init_cutu_and_read_dies does since we don't read the stub. */ | |
7409 | } | |
7410 | else | |
7411 | { | |
7412 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
7413 | gdb_assert (this_cu->cu == NULL); | |
fcd3b13d | 7414 | new_cu.reset (new dwarf2_cu (this_cu)); |
6aa5f3a6 DE |
7415 | } |
7416 | ||
7417 | /* A future optimization, if needed, would be to use an existing | |
7418 | abbrev table. When reading DWOs with skeletonless TUs, all the TUs | |
7419 | could share abbrev tables. */ | |
a2ce51a0 | 7420 | |
685af9cd TT |
7421 | /* The abbreviation table used by READER, this must live at least as long as |
7422 | READER. */ | |
7423 | abbrev_table_up dwo_abbrev_table; | |
7424 | ||
a2ce51a0 | 7425 | if (read_cutu_die_from_dwo (this_cu, sig_type->dwo_unit, |
a2ce51a0 DE |
7426 | NULL /* stub_comp_unit_die */, |
7427 | sig_type->dwo_unit->dwo_file->comp_dir, | |
7428 | &reader, &info_ptr, | |
685af9cd TT |
7429 | &comp_unit_die, &has_children, |
7430 | &dwo_abbrev_table) == 0) | |
a2ce51a0 DE |
7431 | { |
7432 | /* Dummy die. */ | |
a2ce51a0 DE |
7433 | return; |
7434 | } | |
7435 | ||
7436 | /* All the "real" work is done here. */ | |
7437 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
7438 | ||
6aa5f3a6 | 7439 | /* This duplicates the code in init_cutu_and_read_dies, |
a2ce51a0 DE |
7440 | but the alternative is making the latter more complex. |
7441 | This function is only for the special case of using DWO files directly: | |
7442 | no point in overly complicating the general case just to handle this. */ | |
fcd3b13d | 7443 | if (new_cu != NULL && keep) |
a2ce51a0 | 7444 | { |
fcd3b13d SM |
7445 | /* Link this CU into read_in_chain. */ |
7446 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
7447 | dwarf2_per_objfile->read_in_chain = this_cu; | |
7448 | /* The chain owns it now. */ | |
7449 | new_cu.release (); | |
a2ce51a0 | 7450 | } |
a2ce51a0 DE |
7451 | } |
7452 | ||
fd820528 | 7453 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 7454 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 7455 | |
f4dc4d17 DE |
7456 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
7457 | Otherwise the table specified in the comp unit header is read in and used. | |
7458 | This is an optimization for when we already have the abbrev table. | |
7459 | ||
dee91e82 DE |
7460 | If USE_EXISTING_CU is non-zero, and THIS_CU->cu is non-NULL, then use it. |
7461 | Otherwise, a new CU is allocated with xmalloc. | |
7462 | ||
7463 | If KEEP is non-zero, then if we allocated a dwarf2_cu we add it to | |
7464 | read_in_chain. Otherwise the dwarf2_cu data is freed at the end. | |
7465 | ||
7466 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
fd820528 | 7467 | linker) then DIE_READER_FUNC will not get called. */ |
aaa75496 | 7468 | |
70221824 | 7469 | static void |
fd820528 | 7470 | init_cutu_and_read_dies (struct dwarf2_per_cu_data *this_cu, |
f4dc4d17 | 7471 | struct abbrev_table *abbrev_table, |
fd820528 | 7472 | int use_existing_cu, int keep, |
58f0c718 | 7473 | bool skip_partial, |
fd820528 DE |
7474 | die_reader_func_ftype *die_reader_func, |
7475 | void *data) | |
c906108c | 7476 | { |
ed2dc618 | 7477 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
dee91e82 | 7478 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 7479 | struct dwarf2_section_info *section = this_cu->section; |
a32a8923 | 7480 | bfd *abfd = get_section_bfd_owner (section); |
dee91e82 | 7481 | struct dwarf2_cu *cu; |
d521ce57 | 7482 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 7483 | struct die_reader_specs reader; |
d85a05f0 | 7484 | struct die_info *comp_unit_die; |
dee91e82 | 7485 | int has_children; |
d85a05f0 | 7486 | struct attribute *attr; |
dee91e82 | 7487 | struct signatured_type *sig_type = NULL; |
4bdcc0c1 | 7488 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
7489 | /* Non-zero if CU currently points to a DWO file and we need to |
7490 | reread it. When this happens we need to reread the skeleton die | |
a2ce51a0 | 7491 | before we can reread the DWO file (this only applies to CUs, not TUs). */ |
42e7ad6c | 7492 | int rereading_dwo_cu = 0; |
c906108c | 7493 | |
b4f54984 | 7494 | if (dwarf_die_debug) |
9d8780f0 | 7495 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7496 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7497 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7498 | |
dee91e82 DE |
7499 | if (use_existing_cu) |
7500 | gdb_assert (keep); | |
23745b47 | 7501 | |
a2ce51a0 DE |
7502 | /* If we're reading a TU directly from a DWO file, including a virtual DWO |
7503 | file (instead of going through the stub), short-circuit all of this. */ | |
7504 | if (this_cu->reading_dwo_directly) | |
7505 | { | |
7506 | /* Narrow down the scope of possibilities to have to understand. */ | |
7507 | gdb_assert (this_cu->is_debug_types); | |
7508 | gdb_assert (abbrev_table == NULL); | |
6aa5f3a6 DE |
7509 | init_tu_and_read_dwo_dies (this_cu, use_existing_cu, keep, |
7510 | die_reader_func, data); | |
a2ce51a0 DE |
7511 | return; |
7512 | } | |
7513 | ||
dee91e82 DE |
7514 | /* This is cheap if the section is already read in. */ |
7515 | dwarf2_read_section (objfile, section); | |
7516 | ||
9c541725 | 7517 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
36586728 TT |
7518 | |
7519 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 | 7520 | |
fcd3b13d | 7521 | std::unique_ptr<dwarf2_cu> new_cu; |
dee91e82 DE |
7522 | if (use_existing_cu && this_cu->cu != NULL) |
7523 | { | |
7524 | cu = this_cu->cu; | |
42e7ad6c DE |
7525 | /* If this CU is from a DWO file we need to start over, we need to |
7526 | refetch the attributes from the skeleton CU. | |
7527 | This could be optimized by retrieving those attributes from when we | |
7528 | were here the first time: the previous comp_unit_die was stored in | |
7529 | comp_unit_obstack. But there's no data yet that we need this | |
7530 | optimization. */ | |
7531 | if (cu->dwo_unit != NULL) | |
7532 | rereading_dwo_cu = 1; | |
dee91e82 DE |
7533 | } |
7534 | else | |
7535 | { | |
7536 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
7537 | gdb_assert (this_cu->cu == NULL); | |
fcd3b13d SM |
7538 | new_cu.reset (new dwarf2_cu (this_cu)); |
7539 | cu = new_cu.get (); | |
42e7ad6c | 7540 | } |
dee91e82 | 7541 | |
b0c7bfa9 | 7542 | /* Get the header. */ |
9c541725 | 7543 | if (to_underlying (cu->header.first_die_cu_offset) != 0 && !rereading_dwo_cu) |
42e7ad6c DE |
7544 | { |
7545 | /* We already have the header, there's no need to read it in again. */ | |
9c541725 | 7546 | info_ptr += to_underlying (cu->header.first_die_cu_offset); |
42e7ad6c DE |
7547 | } |
7548 | else | |
7549 | { | |
3019eac3 | 7550 | if (this_cu->is_debug_types) |
dee91e82 | 7551 | { |
ed2dc618 SM |
7552 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7553 | &cu->header, section, | |
4bdcc0c1 | 7554 | abbrev_section, info_ptr, |
43988095 | 7555 | rcuh_kind::TYPE); |
dee91e82 | 7556 | |
42e7ad6c DE |
7557 | /* Since per_cu is the first member of struct signatured_type, |
7558 | we can go from a pointer to one to a pointer to the other. */ | |
7559 | sig_type = (struct signatured_type *) this_cu; | |
43988095 | 7560 | gdb_assert (sig_type->signature == cu->header.signature); |
9c541725 PA |
7561 | gdb_assert (sig_type->type_offset_in_tu |
7562 | == cu->header.type_cu_offset_in_tu); | |
7563 | gdb_assert (this_cu->sect_off == cu->header.sect_off); | |
dee91e82 | 7564 | |
42e7ad6c DE |
7565 | /* LENGTH has not been set yet for type units if we're |
7566 | using .gdb_index. */ | |
1ce1cefd | 7567 | this_cu->length = get_cu_length (&cu->header); |
3019eac3 DE |
7568 | |
7569 | /* Establish the type offset that can be used to lookup the type. */ | |
9c541725 PA |
7570 | sig_type->type_offset_in_section = |
7571 | this_cu->sect_off + to_underlying (sig_type->type_offset_in_tu); | |
43988095 JK |
7572 | |
7573 | this_cu->dwarf_version = cu->header.version; | |
dee91e82 DE |
7574 | } |
7575 | else | |
7576 | { | |
ed2dc618 SM |
7577 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7578 | &cu->header, section, | |
4bdcc0c1 | 7579 | abbrev_section, |
43988095 JK |
7580 | info_ptr, |
7581 | rcuh_kind::COMPILE); | |
dee91e82 | 7582 | |
9c541725 | 7583 | gdb_assert (this_cu->sect_off == cu->header.sect_off); |
1ce1cefd | 7584 | gdb_assert (this_cu->length == get_cu_length (&cu->header)); |
43988095 | 7585 | this_cu->dwarf_version = cu->header.version; |
dee91e82 DE |
7586 | } |
7587 | } | |
10b3939b | 7588 | |
6caca83c | 7589 | /* Skip dummy compilation units. */ |
dee91e82 | 7590 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c | 7591 | || peek_abbrev_code (abfd, info_ptr) == 0) |
fcd3b13d | 7592 | return; |
6caca83c | 7593 | |
433df2d4 DE |
7594 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
7595 | And if we need to read them now, make sure they're freed when we're | |
685af9cd TT |
7596 | done (own the table through ABBREV_TABLE_HOLDER). */ |
7597 | abbrev_table_up abbrev_table_holder; | |
f4dc4d17 | 7598 | if (abbrev_table != NULL) |
685af9cd TT |
7599 | gdb_assert (cu->header.abbrev_sect_off == abbrev_table->sect_off); |
7600 | else | |
f4dc4d17 | 7601 | { |
685af9cd TT |
7602 | abbrev_table_holder |
7603 | = abbrev_table_read_table (dwarf2_per_objfile, abbrev_section, | |
7604 | cu->header.abbrev_sect_off); | |
7605 | abbrev_table = abbrev_table_holder.get (); | |
42e7ad6c | 7606 | } |
af703f96 | 7607 | |
dee91e82 | 7608 | /* Read the top level CU/TU die. */ |
685af9cd | 7609 | init_cu_die_reader (&reader, cu, section, NULL, abbrev_table); |
dee91e82 | 7610 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
93311388 | 7611 | |
58f0c718 TT |
7612 | if (skip_partial && comp_unit_die->tag == DW_TAG_partial_unit) |
7613 | return; | |
7614 | ||
b0c7bfa9 | 7615 | /* If we are in a DWO stub, process it and then read in the "real" CU/TU |
685af9cd TT |
7616 | from the DWO file. read_cutu_die_from_dwo will allocate the abbreviation |
7617 | table from the DWO file and pass the ownership over to us. It will be | |
7618 | referenced from READER, so we must make sure to free it after we're done | |
7619 | with READER. | |
7620 | ||
b0c7bfa9 DE |
7621 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains a |
7622 | DWO CU, that this test will fail (the attribute will not be present). */ | |
3019eac3 | 7623 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); |
685af9cd | 7624 | abbrev_table_up dwo_abbrev_table; |
3019eac3 DE |
7625 | if (attr) |
7626 | { | |
3019eac3 | 7627 | struct dwo_unit *dwo_unit; |
b0c7bfa9 | 7628 | struct die_info *dwo_comp_unit_die; |
3019eac3 DE |
7629 | |
7630 | if (has_children) | |
6a506a2d | 7631 | { |
b98664d3 | 7632 | complaint (_("compilation unit with DW_AT_GNU_dwo_name" |
9d8780f0 SM |
7633 | " has children (offset %s) [in module %s]"), |
7634 | sect_offset_str (this_cu->sect_off), | |
7635 | bfd_get_filename (abfd)); | |
6a506a2d | 7636 | } |
b0c7bfa9 | 7637 | dwo_unit = lookup_dwo_unit (this_cu, comp_unit_die); |
6a506a2d | 7638 | if (dwo_unit != NULL) |
3019eac3 | 7639 | { |
6a506a2d | 7640 | if (read_cutu_die_from_dwo (this_cu, dwo_unit, |
a2ce51a0 | 7641 | comp_unit_die, NULL, |
6a506a2d | 7642 | &reader, &info_ptr, |
685af9cd TT |
7643 | &dwo_comp_unit_die, &has_children, |
7644 | &dwo_abbrev_table) == 0) | |
6a506a2d DE |
7645 | { |
7646 | /* Dummy die. */ | |
6a506a2d DE |
7647 | return; |
7648 | } | |
7649 | comp_unit_die = dwo_comp_unit_die; | |
7650 | } | |
7651 | else | |
7652 | { | |
7653 | /* Yikes, we couldn't find the rest of the DIE, we only have | |
7654 | the stub. A complaint has already been logged. There's | |
7655 | not much more we can do except pass on the stub DIE to | |
7656 | die_reader_func. We don't want to throw an error on bad | |
7657 | debug info. */ | |
3019eac3 DE |
7658 | } |
7659 | } | |
7660 | ||
b0c7bfa9 | 7661 | /* All of the above is setup for this call. Yikes. */ |
dee91e82 DE |
7662 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); |
7663 | ||
b0c7bfa9 | 7664 | /* Done, clean up. */ |
fcd3b13d | 7665 | if (new_cu != NULL && keep) |
348e048f | 7666 | { |
fcd3b13d SM |
7667 | /* Link this CU into read_in_chain. */ |
7668 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
7669 | dwarf2_per_objfile->read_in_chain = this_cu; | |
7670 | /* The chain owns it now. */ | |
7671 | new_cu.release (); | |
348e048f | 7672 | } |
dee91e82 DE |
7673 | } |
7674 | ||
33e80786 DE |
7675 | /* Read CU/TU THIS_CU but do not follow DW_AT_GNU_dwo_name if present. |
7676 | DWO_FILE, if non-NULL, is the DWO file to read (the caller is assumed | |
7677 | to have already done the lookup to find the DWO file). | |
dee91e82 DE |
7678 | |
7679 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 7680 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
7681 | |
7682 | We fill in THIS_CU->length. | |
7683 | ||
7684 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
7685 | linker) then DIE_READER_FUNC will not get called. | |
7686 | ||
7687 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
7688 | This is done in order to not leave THIS_CU->cu in a state where we have |
7689 | to care whether it refers to the "main" CU or the DWO CU. */ | |
dee91e82 DE |
7690 | |
7691 | static void | |
7692 | init_cutu_and_read_dies_no_follow (struct dwarf2_per_cu_data *this_cu, | |
3019eac3 | 7693 | struct dwo_file *dwo_file, |
dee91e82 DE |
7694 | die_reader_func_ftype *die_reader_func, |
7695 | void *data) | |
7696 | { | |
ed2dc618 | 7697 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
dee91e82 | 7698 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 7699 | struct dwarf2_section_info *section = this_cu->section; |
a32a8923 | 7700 | bfd *abfd = get_section_bfd_owner (section); |
33e80786 | 7701 | struct dwarf2_section_info *abbrev_section; |
d521ce57 | 7702 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 7703 | struct die_reader_specs reader; |
dee91e82 DE |
7704 | struct die_info *comp_unit_die; |
7705 | int has_children; | |
7706 | ||
b4f54984 | 7707 | if (dwarf_die_debug) |
9d8780f0 | 7708 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7709 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7710 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7711 | |
dee91e82 DE |
7712 | gdb_assert (this_cu->cu == NULL); |
7713 | ||
33e80786 DE |
7714 | abbrev_section = (dwo_file != NULL |
7715 | ? &dwo_file->sections.abbrev | |
7716 | : get_abbrev_section_for_cu (this_cu)); | |
7717 | ||
dee91e82 DE |
7718 | /* This is cheap if the section is already read in. */ |
7719 | dwarf2_read_section (objfile, section); | |
7720 | ||
fcd3b13d | 7721 | struct dwarf2_cu cu (this_cu); |
dee91e82 | 7722 | |
9c541725 | 7723 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
ed2dc618 SM |
7724 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7725 | &cu.header, section, | |
4bdcc0c1 | 7726 | abbrev_section, info_ptr, |
43988095 JK |
7727 | (this_cu->is_debug_types |
7728 | ? rcuh_kind::TYPE | |
7729 | : rcuh_kind::COMPILE)); | |
dee91e82 | 7730 | |
1ce1cefd | 7731 | this_cu->length = get_cu_length (&cu.header); |
dee91e82 DE |
7732 | |
7733 | /* Skip dummy compilation units. */ | |
7734 | if (info_ptr >= begin_info_ptr + this_cu->length | |
7735 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
fcd3b13d | 7736 | return; |
72bf9492 | 7737 | |
685af9cd TT |
7738 | abbrev_table_up abbrev_table |
7739 | = abbrev_table_read_table (dwarf2_per_objfile, abbrev_section, | |
7740 | cu.header.abbrev_sect_off); | |
dee91e82 | 7741 | |
685af9cd | 7742 | init_cu_die_reader (&reader, &cu, section, dwo_file, abbrev_table.get ()); |
dee91e82 DE |
7743 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
7744 | ||
7745 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
dee91e82 DE |
7746 | } |
7747 | ||
3019eac3 DE |
7748 | /* Read a CU/TU, except that this does not look for DW_AT_GNU_dwo_name and |
7749 | does not lookup the specified DWO file. | |
7750 | This cannot be used to read DWO files. | |
dee91e82 DE |
7751 | |
7752 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
7753 | This is done in order to not leave THIS_CU->cu in a state where we have |
7754 | to care whether it refers to the "main" CU or the DWO CU. | |
7755 | We can revisit this if the data shows there's a performance issue. */ | |
dee91e82 DE |
7756 | |
7757 | static void | |
7758 | init_cutu_and_read_dies_simple (struct dwarf2_per_cu_data *this_cu, | |
7759 | die_reader_func_ftype *die_reader_func, | |
7760 | void *data) | |
7761 | { | |
33e80786 | 7762 | init_cutu_and_read_dies_no_follow (this_cu, NULL, die_reader_func, data); |
dee91e82 | 7763 | } |
0018ea6f DE |
7764 | \f |
7765 | /* Type Unit Groups. | |
dee91e82 | 7766 | |
0018ea6f DE |
7767 | Type Unit Groups are a way to collapse the set of all TUs (type units) into |
7768 | a more manageable set. The grouping is done by DW_AT_stmt_list entry | |
7769 | so that all types coming from the same compilation (.o file) are grouped | |
7770 | together. A future step could be to put the types in the same symtab as | |
7771 | the CU the types ultimately came from. */ | |
ff013f42 | 7772 | |
f4dc4d17 DE |
7773 | static hashval_t |
7774 | hash_type_unit_group (const void *item) | |
7775 | { | |
9a3c8263 SM |
7776 | const struct type_unit_group *tu_group |
7777 | = (const struct type_unit_group *) item; | |
f4dc4d17 | 7778 | |
094b34ac | 7779 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 7780 | } |
348e048f DE |
7781 | |
7782 | static int | |
f4dc4d17 | 7783 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 7784 | { |
9a3c8263 SM |
7785 | const struct type_unit_group *lhs = (const struct type_unit_group *) item_lhs; |
7786 | const struct type_unit_group *rhs = (const struct type_unit_group *) item_rhs; | |
348e048f | 7787 | |
094b34ac | 7788 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 7789 | } |
348e048f | 7790 | |
f4dc4d17 DE |
7791 | /* Allocate a hash table for type unit groups. */ |
7792 | ||
7793 | static htab_t | |
ed2dc618 | 7794 | allocate_type_unit_groups_table (struct objfile *objfile) |
f4dc4d17 DE |
7795 | { |
7796 | return htab_create_alloc_ex (3, | |
7797 | hash_type_unit_group, | |
7798 | eq_type_unit_group, | |
7799 | NULL, | |
ed2dc618 | 7800 | &objfile->objfile_obstack, |
f4dc4d17 DE |
7801 | hashtab_obstack_allocate, |
7802 | dummy_obstack_deallocate); | |
7803 | } | |
dee91e82 | 7804 | |
f4dc4d17 DE |
7805 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
7806 | partial symtabs. We combine several TUs per psymtab to not let the size | |
7807 | of any one psymtab grow too big. */ | |
7808 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
7809 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 7810 | |
094b34ac | 7811 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
7812 | Create the type_unit_group object used to hold one or more TUs. */ |
7813 | ||
7814 | static struct type_unit_group * | |
094b34ac | 7815 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 | 7816 | { |
518817b3 SM |
7817 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7818 | = cu->per_cu->dwarf2_per_objfile; | |
f4dc4d17 | 7819 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
094b34ac | 7820 | struct dwarf2_per_cu_data *per_cu; |
f4dc4d17 | 7821 | struct type_unit_group *tu_group; |
f4dc4d17 DE |
7822 | |
7823 | tu_group = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7824 | struct type_unit_group); | |
094b34ac | 7825 | per_cu = &tu_group->per_cu; |
518817b3 | 7826 | per_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
f4dc4d17 | 7827 | |
094b34ac DE |
7828 | if (dwarf2_per_objfile->using_index) |
7829 | { | |
7830 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7831 | struct dwarf2_per_cu_quick_data); | |
094b34ac DE |
7832 | } |
7833 | else | |
7834 | { | |
9c541725 | 7835 | unsigned int line_offset = to_underlying (line_offset_struct); |
094b34ac | 7836 | struct partial_symtab *pst; |
528e1572 | 7837 | std::string name; |
094b34ac DE |
7838 | |
7839 | /* Give the symtab a useful name for debug purposes. */ | |
7840 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
528e1572 SM |
7841 | name = string_printf ("<type_units_%d>", |
7842 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
094b34ac | 7843 | else |
528e1572 | 7844 | name = string_printf ("<type_units_at_0x%x>", line_offset); |
094b34ac | 7845 | |
528e1572 | 7846 | pst = create_partial_symtab (per_cu, name.c_str ()); |
094b34ac | 7847 | pst->anonymous = 1; |
094b34ac | 7848 | } |
f4dc4d17 | 7849 | |
094b34ac | 7850 | tu_group->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7851 | tu_group->hash.line_sect_off = line_offset_struct; |
f4dc4d17 DE |
7852 | |
7853 | return tu_group; | |
7854 | } | |
7855 | ||
094b34ac DE |
7856 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
7857 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
7858 | |
7859 | static struct type_unit_group * | |
ff39bb5e | 7860 | get_type_unit_group (struct dwarf2_cu *cu, const struct attribute *stmt_list) |
f4dc4d17 | 7861 | { |
518817b3 SM |
7862 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7863 | = cu->per_cu->dwarf2_per_objfile; | |
f4dc4d17 DE |
7864 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; |
7865 | struct type_unit_group *tu_group; | |
7866 | void **slot; | |
7867 | unsigned int line_offset; | |
7868 | struct type_unit_group type_unit_group_for_lookup; | |
7869 | ||
7870 | if (dwarf2_per_objfile->type_unit_groups == NULL) | |
7871 | { | |
7872 | dwarf2_per_objfile->type_unit_groups = | |
ed2dc618 | 7873 | allocate_type_unit_groups_table (dwarf2_per_objfile->objfile); |
f4dc4d17 DE |
7874 | } |
7875 | ||
7876 | /* Do we need to create a new group, or can we use an existing one? */ | |
7877 | ||
7878 | if (stmt_list) | |
7879 | { | |
7880 | line_offset = DW_UNSND (stmt_list); | |
7881 | ++tu_stats->nr_symtab_sharers; | |
7882 | } | |
7883 | else | |
7884 | { | |
7885 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
7886 | We can do various things here like create one group per TU or | |
7887 | spread them over multiple groups to split up the expansion work. | |
7888 | To avoid worst case scenarios (too many groups or too large groups) | |
7889 | we, umm, group them in bunches. */ | |
7890 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
7891 | | (tu_stats->nr_stmt_less_type_units | |
7892 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
7893 | ++tu_stats->nr_stmt_less_type_units; | |
7894 | } | |
7895 | ||
094b34ac | 7896 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7897 | type_unit_group_for_lookup.hash.line_sect_off = (sect_offset) line_offset; |
f4dc4d17 DE |
7898 | slot = htab_find_slot (dwarf2_per_objfile->type_unit_groups, |
7899 | &type_unit_group_for_lookup, INSERT); | |
7900 | if (*slot != NULL) | |
7901 | { | |
9a3c8263 | 7902 | tu_group = (struct type_unit_group *) *slot; |
f4dc4d17 DE |
7903 | gdb_assert (tu_group != NULL); |
7904 | } | |
7905 | else | |
7906 | { | |
9c541725 | 7907 | sect_offset line_offset_struct = (sect_offset) line_offset; |
094b34ac | 7908 | tu_group = create_type_unit_group (cu, line_offset_struct); |
f4dc4d17 DE |
7909 | *slot = tu_group; |
7910 | ++tu_stats->nr_symtabs; | |
7911 | } | |
7912 | ||
7913 | return tu_group; | |
7914 | } | |
0018ea6f DE |
7915 | \f |
7916 | /* Partial symbol tables. */ | |
7917 | ||
7918 | /* Create a psymtab named NAME and assign it to PER_CU. | |
7919 | ||
7920 | The caller must fill in the following details: | |
7921 | dirname, textlow, texthigh. */ | |
7922 | ||
7923 | static struct partial_symtab * | |
7924 | create_partial_symtab (struct dwarf2_per_cu_data *per_cu, const char *name) | |
7925 | { | |
e3b94546 | 7926 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
0018ea6f DE |
7927 | struct partial_symtab *pst; |
7928 | ||
939652a5 | 7929 | pst = start_psymtab_common (objfile, name, 0); |
0018ea6f DE |
7930 | |
7931 | pst->psymtabs_addrmap_supported = 1; | |
7932 | ||
7933 | /* This is the glue that links PST into GDB's symbol API. */ | |
7934 | pst->read_symtab_private = per_cu; | |
7935 | pst->read_symtab = dwarf2_read_symtab; | |
7936 | per_cu->v.psymtab = pst; | |
7937 | ||
7938 | return pst; | |
7939 | } | |
7940 | ||
b93601f3 TT |
7941 | /* The DATA object passed to process_psymtab_comp_unit_reader has this |
7942 | type. */ | |
7943 | ||
7944 | struct process_psymtab_comp_unit_data | |
7945 | { | |
7946 | /* True if we are reading a DW_TAG_partial_unit. */ | |
7947 | ||
7948 | int want_partial_unit; | |
7949 | ||
7950 | /* The "pretend" language that is used if the CU doesn't declare a | |
7951 | language. */ | |
7952 | ||
7953 | enum language pretend_language; | |
7954 | }; | |
7955 | ||
0018ea6f DE |
7956 | /* die_reader_func for process_psymtab_comp_unit. */ |
7957 | ||
7958 | static void | |
7959 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7960 | const gdb_byte *info_ptr, |
0018ea6f DE |
7961 | struct die_info *comp_unit_die, |
7962 | int has_children, | |
7963 | void *data) | |
7964 | { | |
7965 | struct dwarf2_cu *cu = reader->cu; | |
518817b3 | 7966 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 7967 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
0018ea6f | 7968 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
0018ea6f DE |
7969 | CORE_ADDR baseaddr; |
7970 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
7971 | struct partial_symtab *pst; | |
3a2b436a | 7972 | enum pc_bounds_kind cu_bounds_kind; |
0018ea6f | 7973 | const char *filename; |
9a3c8263 SM |
7974 | struct process_psymtab_comp_unit_data *info |
7975 | = (struct process_psymtab_comp_unit_data *) data; | |
0018ea6f | 7976 | |
b93601f3 | 7977 | if (comp_unit_die->tag == DW_TAG_partial_unit && !info->want_partial_unit) |
0018ea6f DE |
7978 | return; |
7979 | ||
7980 | gdb_assert (! per_cu->is_debug_types); | |
7981 | ||
b93601f3 | 7982 | prepare_one_comp_unit (cu, comp_unit_die, info->pretend_language); |
0018ea6f | 7983 | |
0018ea6f | 7984 | /* Allocate a new partial symbol table structure. */ |
7d45c7c3 KB |
7985 | filename = dwarf2_string_attr (comp_unit_die, DW_AT_name, cu); |
7986 | if (filename == NULL) | |
0018ea6f | 7987 | filename = ""; |
0018ea6f DE |
7988 | |
7989 | pst = create_partial_symtab (per_cu, filename); | |
7990 | ||
7991 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
7d45c7c3 | 7992 | pst->dirname = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
0018ea6f DE |
7993 | |
7994 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
7995 | ||
7996 | dwarf2_find_base_address (comp_unit_die, cu); | |
7997 | ||
7998 | /* Possibly set the default values of LOWPC and HIGHPC from | |
7999 | `DW_AT_ranges'. */ | |
3a2b436a JK |
8000 | cu_bounds_kind = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
8001 | &best_highpc, cu, pst); | |
8002 | if (cu_bounds_kind == PC_BOUNDS_HIGH_LOW && best_lowpc < best_highpc) | |
79748972 TT |
8003 | { |
8004 | CORE_ADDR low | |
8005 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_lowpc + baseaddr) | |
8006 | - baseaddr); | |
8007 | CORE_ADDR high | |
8008 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_highpc + baseaddr) | |
8009 | - baseaddr - 1); | |
8010 | /* Store the contiguous range if it is not empty; it can be | |
8011 | empty for CUs with no code. */ | |
d320c2b5 TT |
8012 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
8013 | low, high, pst); | |
79748972 | 8014 | } |
0018ea6f DE |
8015 | |
8016 | /* Check if comp unit has_children. | |
8017 | If so, read the rest of the partial symbols from this comp unit. | |
8018 | If not, there's no more debug_info for this comp unit. */ | |
8019 | if (has_children) | |
8020 | { | |
8021 | struct partial_die_info *first_die; | |
8022 | CORE_ADDR lowpc, highpc; | |
8023 | ||
8024 | lowpc = ((CORE_ADDR) -1); | |
8025 | highpc = ((CORE_ADDR) 0); | |
8026 | ||
8027 | first_die = load_partial_dies (reader, info_ptr, 1); | |
8028 | ||
8029 | scan_partial_symbols (first_die, &lowpc, &highpc, | |
e385593e | 8030 | cu_bounds_kind <= PC_BOUNDS_INVALID, cu); |
0018ea6f DE |
8031 | |
8032 | /* If we didn't find a lowpc, set it to highpc to avoid | |
8033 | complaints from `maint check'. */ | |
8034 | if (lowpc == ((CORE_ADDR) -1)) | |
8035 | lowpc = highpc; | |
8036 | ||
8037 | /* If the compilation unit didn't have an explicit address range, | |
8038 | then use the information extracted from its child dies. */ | |
e385593e | 8039 | if (cu_bounds_kind <= PC_BOUNDS_INVALID) |
0018ea6f DE |
8040 | { |
8041 | best_lowpc = lowpc; | |
8042 | best_highpc = highpc; | |
8043 | } | |
8044 | } | |
4ae976d1 | 8045 | pst->set_text_low (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
8046 | best_lowpc + baseaddr) |
8047 | - baseaddr); | |
4ae976d1 | 8048 | pst->set_text_high (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
8049 | best_highpc + baseaddr) |
8050 | - baseaddr); | |
0018ea6f | 8051 | |
8763cede | 8052 | end_psymtab_common (objfile, pst); |
0018ea6f DE |
8053 | |
8054 | if (!VEC_empty (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs)) | |
8055 | { | |
8056 | int i; | |
8057 | int len = VEC_length (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
8058 | struct dwarf2_per_cu_data *iter; | |
8059 | ||
8060 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
8061 | post-pass. */ | |
8062 | pst->number_of_dependencies = len; | |
a9342b62 TT |
8063 | pst->dependencies |
8064 | = objfile->partial_symtabs->allocate_dependencies (len); | |
0018ea6f DE |
8065 | for (i = 0; |
8066 | VEC_iterate (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, | |
8067 | i, iter); | |
8068 | ++i) | |
8069 | pst->dependencies[i] = iter->v.psymtab; | |
8070 | ||
8071 | VEC_free (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
8072 | } | |
8073 | ||
8074 | /* Get the list of files included in the current compilation unit, | |
8075 | and build a psymtab for each of them. */ | |
8076 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
8077 | ||
b4f54984 | 8078 | if (dwarf_read_debug) |
b926417a TT |
8079 | fprintf_unfiltered (gdb_stdlog, |
8080 | "Psymtab for %s unit @%s: %s - %s" | |
8081 | ", %d global, %d static syms\n", | |
8082 | per_cu->is_debug_types ? "type" : "comp", | |
8083 | sect_offset_str (per_cu->sect_off), | |
8084 | paddress (gdbarch, pst->text_low (objfile)), | |
8085 | paddress (gdbarch, pst->text_high (objfile)), | |
8086 | pst->n_global_syms, pst->n_static_syms); | |
0018ea6f DE |
8087 | } |
8088 | ||
8089 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
8090 | Process compilation unit THIS_CU for a psymtab. */ | |
8091 | ||
8092 | static void | |
8093 | process_psymtab_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
b93601f3 TT |
8094 | int want_partial_unit, |
8095 | enum language pretend_language) | |
0018ea6f DE |
8096 | { |
8097 | /* If this compilation unit was already read in, free the | |
8098 | cached copy in order to read it in again. This is | |
8099 | necessary because we skipped some symbols when we first | |
8100 | read in the compilation unit (see load_partial_dies). | |
8101 | This problem could be avoided, but the benefit is unclear. */ | |
8102 | if (this_cu->cu != NULL) | |
8103 | free_one_cached_comp_unit (this_cu); | |
8104 | ||
f1902523 | 8105 | if (this_cu->is_debug_types) |
58f0c718 TT |
8106 | init_cutu_and_read_dies (this_cu, NULL, 0, 0, false, |
8107 | build_type_psymtabs_reader, NULL); | |
f1902523 JK |
8108 | else |
8109 | { | |
8110 | process_psymtab_comp_unit_data info; | |
8111 | info.want_partial_unit = want_partial_unit; | |
8112 | info.pretend_language = pretend_language; | |
58f0c718 | 8113 | init_cutu_and_read_dies (this_cu, NULL, 0, 0, false, |
f1902523 JK |
8114 | process_psymtab_comp_unit_reader, &info); |
8115 | } | |
0018ea6f DE |
8116 | |
8117 | /* Age out any secondary CUs. */ | |
ed2dc618 | 8118 | age_cached_comp_units (this_cu->dwarf2_per_objfile); |
0018ea6f | 8119 | } |
f4dc4d17 DE |
8120 | |
8121 | /* Reader function for build_type_psymtabs. */ | |
8122 | ||
8123 | static void | |
8124 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
d521ce57 | 8125 | const gdb_byte *info_ptr, |
f4dc4d17 DE |
8126 | struct die_info *type_unit_die, |
8127 | int has_children, | |
8128 | void *data) | |
8129 | { | |
ed2dc618 | 8130 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 8131 | = reader->cu->per_cu->dwarf2_per_objfile; |
f4dc4d17 DE |
8132 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8133 | struct dwarf2_cu *cu = reader->cu; | |
8134 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
0186c6a7 | 8135 | struct signatured_type *sig_type; |
f4dc4d17 DE |
8136 | struct type_unit_group *tu_group; |
8137 | struct attribute *attr; | |
8138 | struct partial_die_info *first_die; | |
8139 | CORE_ADDR lowpc, highpc; | |
8140 | struct partial_symtab *pst; | |
8141 | ||
8142 | gdb_assert (data == NULL); | |
0186c6a7 DE |
8143 | gdb_assert (per_cu->is_debug_types); |
8144 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 DE |
8145 | |
8146 | if (! has_children) | |
8147 | return; | |
8148 | ||
8149 | attr = dwarf2_attr_no_follow (type_unit_die, DW_AT_stmt_list); | |
094b34ac | 8150 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 8151 | |
0186c6a7 | 8152 | VEC_safe_push (sig_type_ptr, tu_group->tus, sig_type); |
f4dc4d17 DE |
8153 | |
8154 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
f4dc4d17 DE |
8155 | pst = create_partial_symtab (per_cu, ""); |
8156 | pst->anonymous = 1; | |
8157 | ||
8158 | first_die = load_partial_dies (reader, info_ptr, 1); | |
8159 | ||
8160 | lowpc = (CORE_ADDR) -1; | |
8161 | highpc = (CORE_ADDR) 0; | |
8162 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
8163 | ||
8763cede | 8164 | end_psymtab_common (objfile, pst); |
f4dc4d17 DE |
8165 | } |
8166 | ||
73051182 DE |
8167 | /* Struct used to sort TUs by their abbreviation table offset. */ |
8168 | ||
8169 | struct tu_abbrev_offset | |
8170 | { | |
b2bdb8cf SM |
8171 | tu_abbrev_offset (signatured_type *sig_type_, sect_offset abbrev_offset_) |
8172 | : sig_type (sig_type_), abbrev_offset (abbrev_offset_) | |
8173 | {} | |
8174 | ||
8175 | signatured_type *sig_type; | |
73051182 DE |
8176 | sect_offset abbrev_offset; |
8177 | }; | |
8178 | ||
484cf504 | 8179 | /* Helper routine for build_type_psymtabs_1, passed to std::sort. */ |
73051182 | 8180 | |
484cf504 TT |
8181 | static bool |
8182 | sort_tu_by_abbrev_offset (const struct tu_abbrev_offset &a, | |
8183 | const struct tu_abbrev_offset &b) | |
73051182 | 8184 | { |
484cf504 | 8185 | return a.abbrev_offset < b.abbrev_offset; |
73051182 DE |
8186 | } |
8187 | ||
8188 | /* Efficiently read all the type units. | |
8189 | This does the bulk of the work for build_type_psymtabs. | |
8190 | ||
8191 | The efficiency is because we sort TUs by the abbrev table they use and | |
8192 | only read each abbrev table once. In one program there are 200K TUs | |
8193 | sharing 8K abbrev tables. | |
8194 | ||
8195 | The main purpose of this function is to support building the | |
8196 | dwarf2_per_objfile->type_unit_groups table. | |
8197 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we | |
8198 | can collapse the search space by grouping them by stmt_list. | |
8199 | The savings can be significant, in the same program from above the 200K TUs | |
8200 | share 8K stmt_list tables. | |
8201 | ||
8202 | FUNC is expected to call get_type_unit_group, which will create the | |
8203 | struct type_unit_group if necessary and add it to | |
8204 | dwarf2_per_objfile->type_unit_groups. */ | |
8205 | ||
8206 | static void | |
ed2dc618 | 8207 | build_type_psymtabs_1 (struct dwarf2_per_objfile *dwarf2_per_objfile) |
73051182 | 8208 | { |
73051182 | 8209 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; |
685af9cd | 8210 | abbrev_table_up abbrev_table; |
73051182 | 8211 | sect_offset abbrev_offset; |
73051182 DE |
8212 | |
8213 | /* It's up to the caller to not call us multiple times. */ | |
8214 | gdb_assert (dwarf2_per_objfile->type_unit_groups == NULL); | |
8215 | ||
b2bdb8cf | 8216 | if (dwarf2_per_objfile->all_type_units.empty ()) |
73051182 DE |
8217 | return; |
8218 | ||
8219 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
8220 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
8221 | read each abbrev table in. | |
8222 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
8223 | This is simpler and efficient enough for now. | |
8224 | ||
8225 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
8226 | symtab to use). Typically TUs with the same abbrev offset have the same | |
8227 | stmt_list value too so in practice this should work well. | |
8228 | ||
8229 | The basic algorithm here is: | |
8230 | ||
8231 | sort TUs by abbrev table | |
8232 | for each TU with same abbrev table: | |
8233 | read abbrev table if first user | |
8234 | read TU top level DIE | |
8235 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
8236 | call FUNC */ | |
8237 | ||
b4f54984 | 8238 | if (dwarf_read_debug) |
73051182 DE |
8239 | fprintf_unfiltered (gdb_stdlog, "Building type unit groups ...\n"); |
8240 | ||
8241 | /* Sort in a separate table to maintain the order of all_type_units | |
8242 | for .gdb_index: TU indices directly index all_type_units. */ | |
b2bdb8cf SM |
8243 | std::vector<tu_abbrev_offset> sorted_by_abbrev; |
8244 | sorted_by_abbrev.reserve (dwarf2_per_objfile->all_type_units.size ()); | |
8245 | ||
8246 | for (signatured_type *sig_type : dwarf2_per_objfile->all_type_units) | |
8247 | sorted_by_abbrev.emplace_back | |
8248 | (sig_type, read_abbrev_offset (dwarf2_per_objfile, | |
8249 | sig_type->per_cu.section, | |
8250 | sig_type->per_cu.sect_off)); | |
73051182 | 8251 | |
484cf504 TT |
8252 | std::sort (sorted_by_abbrev.begin (), sorted_by_abbrev.end (), |
8253 | sort_tu_by_abbrev_offset); | |
73051182 | 8254 | |
9c541725 | 8255 | abbrev_offset = (sect_offset) ~(unsigned) 0; |
73051182 | 8256 | |
b2bdb8cf | 8257 | for (const tu_abbrev_offset &tu : sorted_by_abbrev) |
73051182 | 8258 | { |
73051182 DE |
8259 | /* Switch to the next abbrev table if necessary. */ |
8260 | if (abbrev_table == NULL | |
b2bdb8cf | 8261 | || tu.abbrev_offset != abbrev_offset) |
73051182 | 8262 | { |
b2bdb8cf | 8263 | abbrev_offset = tu.abbrev_offset; |
73051182 | 8264 | abbrev_table = |
ed2dc618 SM |
8265 | abbrev_table_read_table (dwarf2_per_objfile, |
8266 | &dwarf2_per_objfile->abbrev, | |
73051182 DE |
8267 | abbrev_offset); |
8268 | ++tu_stats->nr_uniq_abbrev_tables; | |
8269 | } | |
8270 | ||
b2bdb8cf | 8271 | init_cutu_and_read_dies (&tu.sig_type->per_cu, abbrev_table.get (), |
58f0c718 | 8272 | 0, 0, false, build_type_psymtabs_reader, NULL); |
73051182 | 8273 | } |
6aa5f3a6 | 8274 | } |
73051182 | 8275 | |
6aa5f3a6 DE |
8276 | /* Print collected type unit statistics. */ |
8277 | ||
8278 | static void | |
ed2dc618 | 8279 | print_tu_stats (struct dwarf2_per_objfile *dwarf2_per_objfile) |
6aa5f3a6 DE |
8280 | { |
8281 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
8282 | ||
8283 | fprintf_unfiltered (gdb_stdlog, "Type unit statistics:\n"); | |
b2bdb8cf SM |
8284 | fprintf_unfiltered (gdb_stdlog, " %zu TUs\n", |
8285 | dwarf2_per_objfile->all_type_units.size ()); | |
6aa5f3a6 DE |
8286 | fprintf_unfiltered (gdb_stdlog, " %d uniq abbrev tables\n", |
8287 | tu_stats->nr_uniq_abbrev_tables); | |
8288 | fprintf_unfiltered (gdb_stdlog, " %d symtabs from stmt_list entries\n", | |
8289 | tu_stats->nr_symtabs); | |
8290 | fprintf_unfiltered (gdb_stdlog, " %d symtab sharers\n", | |
8291 | tu_stats->nr_symtab_sharers); | |
8292 | fprintf_unfiltered (gdb_stdlog, " %d type units without a stmt_list\n", | |
8293 | tu_stats->nr_stmt_less_type_units); | |
8294 | fprintf_unfiltered (gdb_stdlog, " %d all_type_units reallocs\n", | |
8295 | tu_stats->nr_all_type_units_reallocs); | |
73051182 DE |
8296 | } |
8297 | ||
f4dc4d17 DE |
8298 | /* Traversal function for build_type_psymtabs. */ |
8299 | ||
8300 | static int | |
8301 | build_type_psymtab_dependencies (void **slot, void *info) | |
8302 | { | |
ed2dc618 SM |
8303 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8304 | = (struct dwarf2_per_objfile *) info; | |
f4dc4d17 DE |
8305 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8306 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; | |
094b34ac | 8307 | struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu; |
f4dc4d17 | 8308 | struct partial_symtab *pst = per_cu->v.psymtab; |
0186c6a7 DE |
8309 | int len = VEC_length (sig_type_ptr, tu_group->tus); |
8310 | struct signatured_type *iter; | |
f4dc4d17 DE |
8311 | int i; |
8312 | ||
8313 | gdb_assert (len > 0); | |
0186c6a7 | 8314 | gdb_assert (IS_TYPE_UNIT_GROUP (per_cu)); |
f4dc4d17 DE |
8315 | |
8316 | pst->number_of_dependencies = len; | |
a9342b62 | 8317 | pst->dependencies = objfile->partial_symtabs->allocate_dependencies (len); |
f4dc4d17 | 8318 | for (i = 0; |
0186c6a7 | 8319 | VEC_iterate (sig_type_ptr, tu_group->tus, i, iter); |
f4dc4d17 DE |
8320 | ++i) |
8321 | { | |
0186c6a7 DE |
8322 | gdb_assert (iter->per_cu.is_debug_types); |
8323 | pst->dependencies[i] = iter->per_cu.v.psymtab; | |
796a7ff8 | 8324 | iter->type_unit_group = tu_group; |
f4dc4d17 DE |
8325 | } |
8326 | ||
0186c6a7 | 8327 | VEC_free (sig_type_ptr, tu_group->tus); |
348e048f DE |
8328 | |
8329 | return 1; | |
8330 | } | |
8331 | ||
8332 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
8333 | Build partial symbol tables for the .debug_types comp-units. */ | |
8334 | ||
8335 | static void | |
ed2dc618 | 8336 | build_type_psymtabs (struct dwarf2_per_objfile *dwarf2_per_objfile) |
348e048f | 8337 | { |
ed2dc618 | 8338 | if (! create_all_type_units (dwarf2_per_objfile)) |
348e048f DE |
8339 | return; |
8340 | ||
ed2dc618 | 8341 | build_type_psymtabs_1 (dwarf2_per_objfile); |
6aa5f3a6 | 8342 | } |
f4dc4d17 | 8343 | |
6aa5f3a6 DE |
8344 | /* Traversal function for process_skeletonless_type_unit. |
8345 | Read a TU in a DWO file and build partial symbols for it. */ | |
8346 | ||
8347 | static int | |
8348 | process_skeletonless_type_unit (void **slot, void *info) | |
8349 | { | |
8350 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
ed2dc618 SM |
8351 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8352 | = (struct dwarf2_per_objfile *) info; | |
6aa5f3a6 DE |
8353 | struct signatured_type find_entry, *entry; |
8354 | ||
8355 | /* If this TU doesn't exist in the global table, add it and read it in. */ | |
8356 | ||
8357 | if (dwarf2_per_objfile->signatured_types == NULL) | |
8358 | { | |
8359 | dwarf2_per_objfile->signatured_types | |
ed2dc618 | 8360 | = allocate_signatured_type_table (dwarf2_per_objfile->objfile); |
6aa5f3a6 DE |
8361 | } |
8362 | ||
8363 | find_entry.signature = dwo_unit->signature; | |
8364 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, &find_entry, | |
8365 | INSERT); | |
8366 | /* If we've already seen this type there's nothing to do. What's happening | |
8367 | is we're doing our own version of comdat-folding here. */ | |
8368 | if (*slot != NULL) | |
8369 | return 1; | |
8370 | ||
8371 | /* This does the job that create_all_type_units would have done for | |
8372 | this TU. */ | |
ed2dc618 SM |
8373 | entry = add_type_unit (dwarf2_per_objfile, dwo_unit->signature, slot); |
8374 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, entry, dwo_unit); | |
6aa5f3a6 DE |
8375 | *slot = entry; |
8376 | ||
8377 | /* This does the job that build_type_psymtabs_1 would have done. */ | |
58f0c718 | 8378 | init_cutu_and_read_dies (&entry->per_cu, NULL, 0, 0, false, |
6aa5f3a6 DE |
8379 | build_type_psymtabs_reader, NULL); |
8380 | ||
8381 | return 1; | |
8382 | } | |
8383 | ||
8384 | /* Traversal function for process_skeletonless_type_units. */ | |
8385 | ||
8386 | static int | |
8387 | process_dwo_file_for_skeletonless_type_units (void **slot, void *info) | |
8388 | { | |
8389 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
8390 | ||
8391 | if (dwo_file->tus != NULL) | |
8392 | { | |
8393 | htab_traverse_noresize (dwo_file->tus, | |
8394 | process_skeletonless_type_unit, info); | |
8395 | } | |
8396 | ||
8397 | return 1; | |
8398 | } | |
8399 | ||
8400 | /* Scan all TUs of DWO files, verifying we've processed them. | |
8401 | This is needed in case a TU was emitted without its skeleton. | |
8402 | Note: This can't be done until we know what all the DWO files are. */ | |
8403 | ||
8404 | static void | |
ed2dc618 | 8405 | process_skeletonless_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
6aa5f3a6 DE |
8406 | { |
8407 | /* Skeletonless TUs in DWP files without .gdb_index is not supported yet. */ | |
ed2dc618 | 8408 | if (get_dwp_file (dwarf2_per_objfile) == NULL |
6aa5f3a6 DE |
8409 | && dwarf2_per_objfile->dwo_files != NULL) |
8410 | { | |
8411 | htab_traverse_noresize (dwarf2_per_objfile->dwo_files, | |
8412 | process_dwo_file_for_skeletonless_type_units, | |
ed2dc618 | 8413 | dwarf2_per_objfile); |
6aa5f3a6 | 8414 | } |
348e048f DE |
8415 | } |
8416 | ||
ed2dc618 | 8417 | /* Compute the 'user' field for each psymtab in DWARF2_PER_OBJFILE. */ |
95554aad TT |
8418 | |
8419 | static void | |
ed2dc618 | 8420 | set_partial_user (struct dwarf2_per_objfile *dwarf2_per_objfile) |
95554aad | 8421 | { |
b76e467d | 8422 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
95554aad | 8423 | { |
95554aad | 8424 | struct partial_symtab *pst = per_cu->v.psymtab; |
95554aad | 8425 | |
36586728 TT |
8426 | if (pst == NULL) |
8427 | continue; | |
8428 | ||
b76e467d | 8429 | for (int j = 0; j < pst->number_of_dependencies; ++j) |
95554aad TT |
8430 | { |
8431 | /* Set the 'user' field only if it is not already set. */ | |
8432 | if (pst->dependencies[j]->user == NULL) | |
8433 | pst->dependencies[j]->user = pst; | |
8434 | } | |
8435 | } | |
8436 | } | |
8437 | ||
93311388 DE |
8438 | /* Build the partial symbol table by doing a quick pass through the |
8439 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 8440 | |
93311388 | 8441 | static void |
ed2dc618 | 8442 | dwarf2_build_psymtabs_hard (struct dwarf2_per_objfile *dwarf2_per_objfile) |
93311388 | 8443 | { |
ed2dc618 | 8444 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
93311388 | 8445 | |
b4f54984 | 8446 | if (dwarf_read_debug) |
45cfd468 DE |
8447 | { |
8448 | fprintf_unfiltered (gdb_stdlog, "Building psymtabs of objfile %s ...\n", | |
4262abfb | 8449 | objfile_name (objfile)); |
45cfd468 DE |
8450 | } |
8451 | ||
98bfdba5 PA |
8452 | dwarf2_per_objfile->reading_partial_symbols = 1; |
8453 | ||
be391dca | 8454 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
91c24f0a | 8455 | |
93311388 DE |
8456 | /* Any cached compilation units will be linked by the per-objfile |
8457 | read_in_chain. Make sure to free them when we're done. */ | |
11ed8cad | 8458 | free_cached_comp_units freer (dwarf2_per_objfile); |
72bf9492 | 8459 | |
ed2dc618 | 8460 | build_type_psymtabs (dwarf2_per_objfile); |
348e048f | 8461 | |
ed2dc618 | 8462 | create_all_comp_units (dwarf2_per_objfile); |
c906108c | 8463 | |
60606b2c TT |
8464 | /* Create a temporary address map on a temporary obstack. We later |
8465 | copy this to the final obstack. */ | |
8268c778 | 8466 | auto_obstack temp_obstack; |
791afaa2 TT |
8467 | |
8468 | scoped_restore save_psymtabs_addrmap | |
d320c2b5 | 8469 | = make_scoped_restore (&objfile->partial_symtabs->psymtabs_addrmap, |
791afaa2 | 8470 | addrmap_create_mutable (&temp_obstack)); |
72bf9492 | 8471 | |
b76e467d SM |
8472 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
8473 | process_psymtab_comp_unit (per_cu, 0, language_minimal); | |
ff013f42 | 8474 | |
6aa5f3a6 | 8475 | /* This has to wait until we read the CUs, we need the list of DWOs. */ |
ed2dc618 | 8476 | process_skeletonless_type_units (dwarf2_per_objfile); |
6aa5f3a6 DE |
8477 | |
8478 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
8479 | if (dwarf2_per_objfile->type_unit_groups != NULL) | |
8480 | { | |
8481 | htab_traverse_noresize (dwarf2_per_objfile->type_unit_groups, | |
ed2dc618 | 8482 | build_type_psymtab_dependencies, dwarf2_per_objfile); |
6aa5f3a6 DE |
8483 | } |
8484 | ||
b4f54984 | 8485 | if (dwarf_read_debug) |
ed2dc618 | 8486 | print_tu_stats (dwarf2_per_objfile); |
6aa5f3a6 | 8487 | |
ed2dc618 | 8488 | set_partial_user (dwarf2_per_objfile); |
95554aad | 8489 | |
d320c2b5 TT |
8490 | objfile->partial_symtabs->psymtabs_addrmap |
8491 | = addrmap_create_fixed (objfile->partial_symtabs->psymtabs_addrmap, | |
5923a04c | 8492 | objfile->partial_symtabs->obstack ()); |
791afaa2 TT |
8493 | /* At this point we want to keep the address map. */ |
8494 | save_psymtabs_addrmap.release (); | |
ff013f42 | 8495 | |
b4f54984 | 8496 | if (dwarf_read_debug) |
45cfd468 | 8497 | fprintf_unfiltered (gdb_stdlog, "Done building psymtabs of %s\n", |
4262abfb | 8498 | objfile_name (objfile)); |
ae038cb0 DJ |
8499 | } |
8500 | ||
3019eac3 | 8501 | /* die_reader_func for load_partial_comp_unit. */ |
ae038cb0 DJ |
8502 | |
8503 | static void | |
dee91e82 | 8504 | load_partial_comp_unit_reader (const struct die_reader_specs *reader, |
d521ce57 | 8505 | const gdb_byte *info_ptr, |
dee91e82 DE |
8506 | struct die_info *comp_unit_die, |
8507 | int has_children, | |
8508 | void *data) | |
ae038cb0 | 8509 | { |
dee91e82 | 8510 | struct dwarf2_cu *cu = reader->cu; |
ae038cb0 | 8511 | |
95554aad | 8512 | prepare_one_comp_unit (cu, comp_unit_die, language_minimal); |
ae038cb0 | 8513 | |
ae038cb0 DJ |
8514 | /* Check if comp unit has_children. |
8515 | If so, read the rest of the partial symbols from this comp unit. | |
0963b4bd | 8516 | If not, there's no more debug_info for this comp unit. */ |
d85a05f0 | 8517 | if (has_children) |
dee91e82 DE |
8518 | load_partial_dies (reader, info_ptr, 0); |
8519 | } | |
98bfdba5 | 8520 | |
dee91e82 DE |
8521 | /* Load the partial DIEs for a secondary CU into memory. |
8522 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 8523 | |
dee91e82 DE |
8524 | static void |
8525 | load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu) | |
8526 | { | |
58f0c718 | 8527 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, false, |
f4dc4d17 | 8528 | load_partial_comp_unit_reader, NULL); |
ae038cb0 DJ |
8529 | } |
8530 | ||
ae038cb0 | 8531 | static void |
ed2dc618 | 8532 | read_comp_units_from_section (struct dwarf2_per_objfile *dwarf2_per_objfile, |
36586728 | 8533 | struct dwarf2_section_info *section, |
f1902523 | 8534 | struct dwarf2_section_info *abbrev_section, |
b76e467d | 8535 | unsigned int is_dwz) |
ae038cb0 | 8536 | { |
d521ce57 | 8537 | const gdb_byte *info_ptr; |
ed2dc618 | 8538 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
be391dca | 8539 | |
b4f54984 | 8540 | if (dwarf_read_debug) |
bf6af496 | 8541 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s\n", |
a32a8923 DE |
8542 | get_section_name (section), |
8543 | get_section_file_name (section)); | |
bf6af496 | 8544 | |
36586728 | 8545 | dwarf2_read_section (objfile, section); |
ae038cb0 | 8546 | |
36586728 | 8547 | info_ptr = section->buffer; |
6e70227d | 8548 | |
36586728 | 8549 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 8550 | { |
ae038cb0 | 8551 | struct dwarf2_per_cu_data *this_cu; |
ae038cb0 | 8552 | |
9c541725 | 8553 | sect_offset sect_off = (sect_offset) (info_ptr - section->buffer); |
ae038cb0 | 8554 | |
f1902523 | 8555 | comp_unit_head cu_header; |
ed2dc618 SM |
8556 | read_and_check_comp_unit_head (dwarf2_per_objfile, &cu_header, section, |
8557 | abbrev_section, info_ptr, | |
8558 | rcuh_kind::COMPILE); | |
ae038cb0 DJ |
8559 | |
8560 | /* Save the compilation unit for later lookup. */ | |
f1902523 JK |
8561 | if (cu_header.unit_type != DW_UT_type) |
8562 | { | |
8563 | this_cu = XOBNEW (&objfile->objfile_obstack, | |
8564 | struct dwarf2_per_cu_data); | |
8565 | memset (this_cu, 0, sizeof (*this_cu)); | |
8566 | } | |
8567 | else | |
8568 | { | |
8569 | auto sig_type = XOBNEW (&objfile->objfile_obstack, | |
8570 | struct signatured_type); | |
8571 | memset (sig_type, 0, sizeof (*sig_type)); | |
8572 | sig_type->signature = cu_header.signature; | |
8573 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
8574 | this_cu = &sig_type->per_cu; | |
8575 | } | |
8576 | this_cu->is_debug_types = (cu_header.unit_type == DW_UT_type); | |
9c541725 | 8577 | this_cu->sect_off = sect_off; |
f1902523 | 8578 | this_cu->length = cu_header.length + cu_header.initial_length_size; |
36586728 | 8579 | this_cu->is_dwz = is_dwz; |
e3b94546 | 8580 | this_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
8a0459fd | 8581 | this_cu->section = section; |
ae038cb0 | 8582 | |
b76e467d | 8583 | dwarf2_per_objfile->all_comp_units.push_back (this_cu); |
ae038cb0 DJ |
8584 | |
8585 | info_ptr = info_ptr + this_cu->length; | |
8586 | } | |
36586728 TT |
8587 | } |
8588 | ||
8589 | /* Create a list of all compilation units in OBJFILE. | |
8590 | This is only done for -readnow and building partial symtabs. */ | |
8591 | ||
8592 | static void | |
ed2dc618 | 8593 | create_all_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
36586728 | 8594 | { |
b76e467d | 8595 | gdb_assert (dwarf2_per_objfile->all_comp_units.empty ()); |
ed2dc618 | 8596 | read_comp_units_from_section (dwarf2_per_objfile, &dwarf2_per_objfile->info, |
b76e467d | 8597 | &dwarf2_per_objfile->abbrev, 0); |
36586728 | 8598 | |
b76e467d | 8599 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
4db1a1dc | 8600 | if (dwz != NULL) |
ed2dc618 | 8601 | read_comp_units_from_section (dwarf2_per_objfile, &dwz->info, &dwz->abbrev, |
b76e467d | 8602 | 1); |
c906108c SS |
8603 | } |
8604 | ||
5734ee8b | 8605 | /* Process all loaded DIEs for compilation unit CU, starting at |
cdc07690 | 8606 | FIRST_DIE. The caller should pass SET_ADDRMAP == 1 if the compilation |
5734ee8b | 8607 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or |
cdc07690 YQ |
8608 | DW_AT_ranges). See the comments of add_partial_subprogram on how |
8609 | SET_ADDRMAP is used and how *LOWPC and *HIGHPC are updated. */ | |
c906108c | 8610 | |
72bf9492 DJ |
8611 | static void |
8612 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
cdc07690 YQ |
8613 | CORE_ADDR *highpc, int set_addrmap, |
8614 | struct dwarf2_cu *cu) | |
c906108c | 8615 | { |
72bf9492 | 8616 | struct partial_die_info *pdi; |
c906108c | 8617 | |
91c24f0a DC |
8618 | /* Now, march along the PDI's, descending into ones which have |
8619 | interesting children but skipping the children of the other ones, | |
8620 | until we reach the end of the compilation unit. */ | |
c906108c | 8621 | |
72bf9492 | 8622 | pdi = first_die; |
91c24f0a | 8623 | |
72bf9492 DJ |
8624 | while (pdi != NULL) |
8625 | { | |
52356b79 | 8626 | pdi->fixup (cu); |
c906108c | 8627 | |
f55ee35c | 8628 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
8629 | children, so we need to look at them. Ditto for anonymous |
8630 | enums. */ | |
933c6fe4 | 8631 | |
72bf9492 | 8632 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
95554aad | 8633 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
b1dc1806 XR |
8634 | || pdi->tag == DW_TAG_imported_unit |
8635 | || pdi->tag == DW_TAG_inlined_subroutine) | |
c906108c | 8636 | { |
72bf9492 | 8637 | switch (pdi->tag) |
c906108c SS |
8638 | { |
8639 | case DW_TAG_subprogram: | |
b1dc1806 | 8640 | case DW_TAG_inlined_subroutine: |
cdc07690 | 8641 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
c906108c | 8642 | break; |
72929c62 | 8643 | case DW_TAG_constant: |
c906108c SS |
8644 | case DW_TAG_variable: |
8645 | case DW_TAG_typedef: | |
91c24f0a | 8646 | case DW_TAG_union_type: |
72bf9492 | 8647 | if (!pdi->is_declaration) |
63d06c5c | 8648 | { |
72bf9492 | 8649 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
8650 | } |
8651 | break; | |
c906108c | 8652 | case DW_TAG_class_type: |
680b30c7 | 8653 | case DW_TAG_interface_type: |
c906108c | 8654 | case DW_TAG_structure_type: |
72bf9492 | 8655 | if (!pdi->is_declaration) |
c906108c | 8656 | { |
72bf9492 | 8657 | add_partial_symbol (pdi, cu); |
c906108c | 8658 | } |
b7fee5a3 KS |
8659 | if ((cu->language == language_rust |
8660 | || cu->language == language_cplus) && pdi->has_children) | |
e98c9e7c TT |
8661 | scan_partial_symbols (pdi->die_child, lowpc, highpc, |
8662 | set_addrmap, cu); | |
c906108c | 8663 | break; |
91c24f0a | 8664 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
8665 | if (!pdi->is_declaration) |
8666 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
8667 | break; |
8668 | case DW_TAG_base_type: | |
a02abb62 | 8669 | case DW_TAG_subrange_type: |
c906108c | 8670 | /* File scope base type definitions are added to the partial |
c5aa993b | 8671 | symbol table. */ |
72bf9492 | 8672 | add_partial_symbol (pdi, cu); |
c906108c | 8673 | break; |
d9fa45fe | 8674 | case DW_TAG_namespace: |
cdc07690 | 8675 | add_partial_namespace (pdi, lowpc, highpc, set_addrmap, cu); |
91c24f0a | 8676 | break; |
5d7cb8df | 8677 | case DW_TAG_module: |
cdc07690 | 8678 | add_partial_module (pdi, lowpc, highpc, set_addrmap, cu); |
5d7cb8df | 8679 | break; |
95554aad TT |
8680 | case DW_TAG_imported_unit: |
8681 | { | |
8682 | struct dwarf2_per_cu_data *per_cu; | |
8683 | ||
f4dc4d17 DE |
8684 | /* For now we don't handle imported units in type units. */ |
8685 | if (cu->per_cu->is_debug_types) | |
8686 | { | |
8687 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
8688 | " supported in type units [in module %s]"), | |
518817b3 | 8689 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
f4dc4d17 DE |
8690 | } |
8691 | ||
e3b94546 SM |
8692 | per_cu = dwarf2_find_containing_comp_unit |
8693 | (pdi->d.sect_off, pdi->is_dwz, | |
518817b3 | 8694 | cu->per_cu->dwarf2_per_objfile); |
95554aad TT |
8695 | |
8696 | /* Go read the partial unit, if needed. */ | |
8697 | if (per_cu->v.psymtab == NULL) | |
b93601f3 | 8698 | process_psymtab_comp_unit (per_cu, 1, cu->language); |
95554aad | 8699 | |
f4dc4d17 | 8700 | VEC_safe_push (dwarf2_per_cu_ptr, |
796a7ff8 | 8701 | cu->per_cu->imported_symtabs, per_cu); |
95554aad TT |
8702 | } |
8703 | break; | |
74921315 KS |
8704 | case DW_TAG_imported_declaration: |
8705 | add_partial_symbol (pdi, cu); | |
8706 | break; | |
c906108c SS |
8707 | default: |
8708 | break; | |
8709 | } | |
8710 | } | |
8711 | ||
72bf9492 DJ |
8712 | /* If the die has a sibling, skip to the sibling. */ |
8713 | ||
8714 | pdi = pdi->die_sibling; | |
8715 | } | |
8716 | } | |
8717 | ||
8718 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 8719 | |
72bf9492 | 8720 | Normally, this is simple. For C++, the parent DIE's fully scoped |
9c37b5ae | 8721 | name is concatenated with "::" and the partial DIE's name. |
72bf9492 DJ |
8722 | Enumerators are an exception; they use the scope of their parent |
8723 | enumeration type, i.e. the name of the enumeration type is not | |
8724 | prepended to the enumerator. | |
91c24f0a | 8725 | |
72bf9492 DJ |
8726 | There are two complexities. One is DW_AT_specification; in this |
8727 | case "parent" means the parent of the target of the specification, | |
8728 | instead of the direct parent of the DIE. The other is compilers | |
8729 | which do not emit DW_TAG_namespace; in this case we try to guess | |
8730 | the fully qualified name of structure types from their members' | |
8731 | linkage names. This must be done using the DIE's children rather | |
8732 | than the children of any DW_AT_specification target. We only need | |
8733 | to do this for structures at the top level, i.e. if the target of | |
8734 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
8735 | have a parent. */ | |
8736 | ||
8737 | /* Compute the scope prefix associated with PDI's parent, in | |
8738 | compilation unit CU. The result will be allocated on CU's | |
8739 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
8740 | field. NULL is returned if no prefix is necessary. */ | |
15d034d0 | 8741 | static const char * |
72bf9492 DJ |
8742 | partial_die_parent_scope (struct partial_die_info *pdi, |
8743 | struct dwarf2_cu *cu) | |
8744 | { | |
15d034d0 | 8745 | const char *grandparent_scope; |
72bf9492 | 8746 | struct partial_die_info *parent, *real_pdi; |
91c24f0a | 8747 | |
72bf9492 DJ |
8748 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
8749 | then this means the parent of the specification DIE. */ | |
8750 | ||
8751 | real_pdi = pdi; | |
72bf9492 | 8752 | while (real_pdi->has_specification) |
36586728 TT |
8753 | real_pdi = find_partial_die (real_pdi->spec_offset, |
8754 | real_pdi->spec_is_dwz, cu); | |
72bf9492 DJ |
8755 | |
8756 | parent = real_pdi->die_parent; | |
8757 | if (parent == NULL) | |
8758 | return NULL; | |
8759 | ||
8760 | if (parent->scope_set) | |
8761 | return parent->scope; | |
8762 | ||
52356b79 | 8763 | parent->fixup (cu); |
72bf9492 | 8764 | |
10b3939b | 8765 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 8766 | |
acebe513 UW |
8767 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
8768 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
8769 | Work around this problem here. */ | |
8770 | if (cu->language == language_cplus | |
6e70227d | 8771 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
8772 | && strcmp (parent->name, "::") == 0 |
8773 | && grandparent_scope == NULL) | |
8774 | { | |
8775 | parent->scope = NULL; | |
8776 | parent->scope_set = 1; | |
8777 | return NULL; | |
8778 | } | |
8779 | ||
9c6c53f7 SA |
8780 | if (pdi->tag == DW_TAG_enumerator) |
8781 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
8782 | parent->scope = grandparent_scope; | |
8783 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 8784 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
8785 | || parent->tag == DW_TAG_structure_type |
8786 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 8787 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a TT |
8788 | || parent->tag == DW_TAG_union_type |
8789 | || parent->tag == DW_TAG_enumeration_type) | |
72bf9492 DJ |
8790 | { |
8791 | if (grandparent_scope == NULL) | |
8792 | parent->scope = parent->name; | |
8793 | else | |
3e43a32a MS |
8794 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
8795 | grandparent_scope, | |
f55ee35c | 8796 | parent->name, 0, cu); |
72bf9492 | 8797 | } |
72bf9492 DJ |
8798 | else |
8799 | { | |
8800 | /* FIXME drow/2004-04-01: What should we be doing with | |
8801 | function-local names? For partial symbols, we should probably be | |
8802 | ignoring them. */ | |
b98664d3 | 8803 | complaint (_("unhandled containing DIE tag %d for DIE at %s"), |
9d8780f0 | 8804 | parent->tag, sect_offset_str (pdi->sect_off)); |
72bf9492 | 8805 | parent->scope = grandparent_scope; |
c906108c SS |
8806 | } |
8807 | ||
72bf9492 DJ |
8808 | parent->scope_set = 1; |
8809 | return parent->scope; | |
8810 | } | |
8811 | ||
8812 | /* Return the fully scoped name associated with PDI, from compilation unit | |
8813 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 8814 | |
72bf9492 DJ |
8815 | static char * |
8816 | partial_die_full_name (struct partial_die_info *pdi, | |
8817 | struct dwarf2_cu *cu) | |
8818 | { | |
15d034d0 | 8819 | const char *parent_scope; |
72bf9492 | 8820 | |
98bfdba5 PA |
8821 | /* If this is a template instantiation, we can not work out the |
8822 | template arguments from partial DIEs. So, unfortunately, we have | |
8823 | to go through the full DIEs. At least any work we do building | |
8824 | types here will be reused if full symbols are loaded later. */ | |
8825 | if (pdi->has_template_arguments) | |
8826 | { | |
52356b79 | 8827 | pdi->fixup (cu); |
98bfdba5 PA |
8828 | |
8829 | if (pdi->name != NULL && strchr (pdi->name, '<') == NULL) | |
8830 | { | |
8831 | struct die_info *die; | |
8832 | struct attribute attr; | |
8833 | struct dwarf2_cu *ref_cu = cu; | |
8834 | ||
b64f50a1 | 8835 | /* DW_FORM_ref_addr is using section offset. */ |
b4069958 | 8836 | attr.name = (enum dwarf_attribute) 0; |
98bfdba5 | 8837 | attr.form = DW_FORM_ref_addr; |
9c541725 | 8838 | attr.u.unsnd = to_underlying (pdi->sect_off); |
98bfdba5 PA |
8839 | die = follow_die_ref (NULL, &attr, &ref_cu); |
8840 | ||
8841 | return xstrdup (dwarf2_full_name (NULL, die, ref_cu)); | |
8842 | } | |
8843 | } | |
8844 | ||
72bf9492 DJ |
8845 | parent_scope = partial_die_parent_scope (pdi, cu); |
8846 | if (parent_scope == NULL) | |
8847 | return NULL; | |
8848 | else | |
f55ee35c | 8849 | return typename_concat (NULL, parent_scope, pdi->name, 0, cu); |
c906108c SS |
8850 | } |
8851 | ||
8852 | static void | |
72bf9492 | 8853 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 8854 | { |
518817b3 SM |
8855 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8856 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 8857 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 8858 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 8859 | CORE_ADDR addr = 0; |
15d034d0 | 8860 | const char *actual_name = NULL; |
e142c38c | 8861 | CORE_ADDR baseaddr; |
15d034d0 | 8862 | char *built_actual_name; |
e142c38c DJ |
8863 | |
8864 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 8865 | |
15d034d0 TT |
8866 | built_actual_name = partial_die_full_name (pdi, cu); |
8867 | if (built_actual_name != NULL) | |
8868 | actual_name = built_actual_name; | |
63d06c5c | 8869 | |
72bf9492 DJ |
8870 | if (actual_name == NULL) |
8871 | actual_name = pdi->name; | |
8872 | ||
c906108c SS |
8873 | switch (pdi->tag) |
8874 | { | |
b1dc1806 | 8875 | case DW_TAG_inlined_subroutine: |
c906108c | 8876 | case DW_TAG_subprogram: |
79748972 TT |
8877 | addr = (gdbarch_adjust_dwarf2_addr (gdbarch, pdi->lowpc + baseaddr) |
8878 | - baseaddr); | |
2cfa0c8d | 8879 | if (pdi->is_external || cu->language == language_ada) |
c906108c | 8880 | { |
2cfa0c8d JB |
8881 | /* brobecker/2007-12-26: Normally, only "external" DIEs are part |
8882 | of the global scope. But in Ada, we want to be able to access | |
8883 | nested procedures globally. So all Ada subprograms are stored | |
8884 | in the global scope. */ | |
f47fb265 | 8885 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 8886 | built_actual_name != NULL, |
f47fb265 | 8887 | VAR_DOMAIN, LOC_BLOCK, |
79748972 | 8888 | SECT_OFF_TEXT (objfile), |
75aedd27 | 8889 | psymbol_placement::GLOBAL, |
79748972 TT |
8890 | addr, |
8891 | cu->language, objfile); | |
c906108c SS |
8892 | } |
8893 | else | |
8894 | { | |
f47fb265 | 8895 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 8896 | built_actual_name != NULL, |
f47fb265 | 8897 | VAR_DOMAIN, LOC_BLOCK, |
79748972 | 8898 | SECT_OFF_TEXT (objfile), |
75aedd27 | 8899 | psymbol_placement::STATIC, |
1762568f | 8900 | addr, cu->language, objfile); |
c906108c | 8901 | } |
0c1b455e TT |
8902 | |
8903 | if (pdi->main_subprogram && actual_name != NULL) | |
8904 | set_objfile_main_name (objfile, actual_name, cu->language); | |
c906108c | 8905 | break; |
72929c62 | 8906 | case DW_TAG_constant: |
75aedd27 TT |
8907 | add_psymbol_to_list (actual_name, strlen (actual_name), |
8908 | built_actual_name != NULL, VAR_DOMAIN, LOC_STATIC, | |
8909 | -1, (pdi->is_external | |
8910 | ? psymbol_placement::GLOBAL | |
8911 | : psymbol_placement::STATIC), | |
8912 | 0, cu->language, objfile); | |
72929c62 | 8913 | break; |
c906108c | 8914 | case DW_TAG_variable: |
95554aad TT |
8915 | if (pdi->d.locdesc) |
8916 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 8917 | |
95554aad | 8918 | if (pdi->d.locdesc |
caac4577 JG |
8919 | && addr == 0 |
8920 | && !dwarf2_per_objfile->has_section_at_zero) | |
8921 | { | |
8922 | /* A global or static variable may also have been stripped | |
8923 | out by the linker if unused, in which case its address | |
8924 | will be nullified; do not add such variables into partial | |
8925 | symbol table then. */ | |
8926 | } | |
8927 | else if (pdi->is_external) | |
c906108c SS |
8928 | { |
8929 | /* Global Variable. | |
8930 | Don't enter into the minimal symbol tables as there is | |
8931 | a minimal symbol table entry from the ELF symbols already. | |
8932 | Enter into partial symbol table if it has a location | |
8933 | descriptor or a type. | |
8934 | If the location descriptor is missing, new_symbol will create | |
8935 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
8936 | be determined from the minimal symbol table whenever the variable | |
8937 | is referenced. | |
8938 | The address for the partial symbol table entry is not | |
8939 | used by GDB, but it comes in handy for debugging partial symbol | |
8940 | table building. */ | |
8941 | ||
95554aad | 8942 | if (pdi->d.locdesc || pdi->has_type) |
f47fb265 | 8943 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 8944 | built_actual_name != NULL, |
f47fb265 | 8945 | VAR_DOMAIN, LOC_STATIC, |
79748972 | 8946 | SECT_OFF_TEXT (objfile), |
75aedd27 | 8947 | psymbol_placement::GLOBAL, |
79748972 | 8948 | addr, cu->language, objfile); |
c906108c SS |
8949 | } |
8950 | else | |
8951 | { | |
ff908ebf AW |
8952 | int has_loc = pdi->d.locdesc != NULL; |
8953 | ||
8954 | /* Static Variable. Skip symbols whose value we cannot know (those | |
8955 | without location descriptors or constant values). */ | |
8956 | if (!has_loc && !pdi->has_const_value) | |
decbce07 | 8957 | { |
15d034d0 | 8958 | xfree (built_actual_name); |
decbce07 MS |
8959 | return; |
8960 | } | |
ff908ebf | 8961 | |
f47fb265 | 8962 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 8963 | built_actual_name != NULL, |
f47fb265 | 8964 | VAR_DOMAIN, LOC_STATIC, |
79748972 | 8965 | SECT_OFF_TEXT (objfile), |
75aedd27 | 8966 | psymbol_placement::STATIC, |
79748972 | 8967 | has_loc ? addr : 0, |
f47fb265 | 8968 | cu->language, objfile); |
c906108c SS |
8969 | } |
8970 | break; | |
8971 | case DW_TAG_typedef: | |
8972 | case DW_TAG_base_type: | |
a02abb62 | 8973 | case DW_TAG_subrange_type: |
38d518c9 | 8974 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 8975 | built_actual_name != NULL, |
79748972 | 8976 | VAR_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 8977 | psymbol_placement::STATIC, |
1762568f | 8978 | 0, cu->language, objfile); |
c906108c | 8979 | break; |
74921315 | 8980 | case DW_TAG_imported_declaration: |
72bf9492 DJ |
8981 | case DW_TAG_namespace: |
8982 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
15d034d0 | 8983 | built_actual_name != NULL, |
79748972 | 8984 | VAR_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 8985 | psymbol_placement::GLOBAL, |
1762568f | 8986 | 0, cu->language, objfile); |
72bf9492 | 8987 | break; |
530e8392 KB |
8988 | case DW_TAG_module: |
8989 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
8990 | built_actual_name != NULL, | |
79748972 | 8991 | MODULE_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 8992 | psymbol_placement::GLOBAL, |
1762568f | 8993 | 0, cu->language, objfile); |
530e8392 | 8994 | break; |
c906108c | 8995 | case DW_TAG_class_type: |
680b30c7 | 8996 | case DW_TAG_interface_type: |
c906108c SS |
8997 | case DW_TAG_structure_type: |
8998 | case DW_TAG_union_type: | |
8999 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
9000 | /* Skip external references. The DWARF standard says in the section |
9001 | about "Structure, Union, and Class Type Entries": "An incomplete | |
9002 | structure, union or class type is represented by a structure, | |
9003 | union or class entry that does not have a byte size attribute | |
9004 | and that has a DW_AT_declaration attribute." */ | |
9005 | if (!pdi->has_byte_size && pdi->is_declaration) | |
decbce07 | 9006 | { |
15d034d0 | 9007 | xfree (built_actual_name); |
decbce07 MS |
9008 | return; |
9009 | } | |
fa4028e9 | 9010 | |
63d06c5c DC |
9011 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
9012 | static vs. global. */ | |
38d518c9 | 9013 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 9014 | built_actual_name != NULL, |
79748972 | 9015 | STRUCT_DOMAIN, LOC_TYPEDEF, -1, |
9c37b5ae | 9016 | cu->language == language_cplus |
75aedd27 TT |
9017 | ? psymbol_placement::GLOBAL |
9018 | : psymbol_placement::STATIC, | |
1762568f | 9019 | 0, cu->language, objfile); |
c906108c | 9020 | |
c906108c SS |
9021 | break; |
9022 | case DW_TAG_enumerator: | |
38d518c9 | 9023 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 9024 | built_actual_name != NULL, |
79748972 | 9025 | VAR_DOMAIN, LOC_CONST, -1, |
9c37b5ae | 9026 | cu->language == language_cplus |
75aedd27 TT |
9027 | ? psymbol_placement::GLOBAL |
9028 | : psymbol_placement::STATIC, | |
1762568f | 9029 | 0, cu->language, objfile); |
c906108c SS |
9030 | break; |
9031 | default: | |
9032 | break; | |
9033 | } | |
5c4e30ca | 9034 | |
15d034d0 | 9035 | xfree (built_actual_name); |
c906108c SS |
9036 | } |
9037 | ||
5c4e30ca DC |
9038 | /* Read a partial die corresponding to a namespace; also, add a symbol |
9039 | corresponding to that namespace to the symbol table. NAMESPACE is | |
9040 | the name of the enclosing namespace. */ | |
91c24f0a | 9041 | |
72bf9492 DJ |
9042 | static void |
9043 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 9044 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
cdc07690 | 9045 | int set_addrmap, struct dwarf2_cu *cu) |
91c24f0a | 9046 | { |
72bf9492 | 9047 | /* Add a symbol for the namespace. */ |
e7c27a73 | 9048 | |
72bf9492 | 9049 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
9050 | |
9051 | /* Now scan partial symbols in that namespace. */ | |
9052 | ||
91c24f0a | 9053 | if (pdi->has_children) |
cdc07690 | 9054 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
91c24f0a DC |
9055 | } |
9056 | ||
5d7cb8df JK |
9057 | /* Read a partial die corresponding to a Fortran module. */ |
9058 | ||
9059 | static void | |
9060 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
cdc07690 | 9061 | CORE_ADDR *highpc, int set_addrmap, struct dwarf2_cu *cu) |
5d7cb8df | 9062 | { |
530e8392 KB |
9063 | /* Add a symbol for the namespace. */ |
9064 | ||
9065 | add_partial_symbol (pdi, cu); | |
9066 | ||
f55ee35c | 9067 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
9068 | |
9069 | if (pdi->has_children) | |
cdc07690 | 9070 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
5d7cb8df JK |
9071 | } |
9072 | ||
b1dc1806 XR |
9073 | /* Read a partial die corresponding to a subprogram or an inlined |
9074 | subprogram and create a partial symbol for that subprogram. | |
9075 | When the CU language allows it, this routine also defines a partial | |
9076 | symbol for each nested subprogram that this subprogram contains. | |
9077 | If SET_ADDRMAP is true, record the covered ranges in the addrmap. | |
9078 | Set *LOWPC and *HIGHPC to the lowest and highest PC values found in PDI. | |
6e70227d | 9079 | |
cdc07690 YQ |
9080 | PDI may also be a lexical block, in which case we simply search |
9081 | recursively for subprograms defined inside that lexical block. | |
bc30ff58 JB |
9082 | Again, this is only performed when the CU language allows this |
9083 | type of definitions. */ | |
9084 | ||
9085 | static void | |
9086 | add_partial_subprogram (struct partial_die_info *pdi, | |
9087 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 9088 | int set_addrmap, struct dwarf2_cu *cu) |
bc30ff58 | 9089 | { |
b1dc1806 | 9090 | if (pdi->tag == DW_TAG_subprogram || pdi->tag == DW_TAG_inlined_subroutine) |
bc30ff58 JB |
9091 | { |
9092 | if (pdi->has_pc_info) | |
9093 | { | |
9094 | if (pdi->lowpc < *lowpc) | |
9095 | *lowpc = pdi->lowpc; | |
9096 | if (pdi->highpc > *highpc) | |
9097 | *highpc = pdi->highpc; | |
cdc07690 | 9098 | if (set_addrmap) |
5734ee8b | 9099 | { |
518817b3 | 9100 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a MR |
9101 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9102 | CORE_ADDR baseaddr; | |
b926417a TT |
9103 | CORE_ADDR this_highpc; |
9104 | CORE_ADDR this_lowpc; | |
5734ee8b DJ |
9105 | |
9106 | baseaddr = ANOFFSET (objfile->section_offsets, | |
9107 | SECT_OFF_TEXT (objfile)); | |
b926417a TT |
9108 | this_lowpc |
9109 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
9110 | pdi->lowpc + baseaddr) | |
9111 | - baseaddr); | |
9112 | this_highpc | |
9113 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
9114 | pdi->highpc + baseaddr) | |
9115 | - baseaddr); | |
d320c2b5 | 9116 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
b926417a | 9117 | this_lowpc, this_highpc - 1, |
9291a0cd | 9118 | cu->per_cu->v.psymtab); |
5734ee8b | 9119 | } |
481860b3 GB |
9120 | } |
9121 | ||
9122 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
9123 | { | |
bc30ff58 | 9124 | if (!pdi->is_declaration) |
e8d05480 JB |
9125 | /* Ignore subprogram DIEs that do not have a name, they are |
9126 | illegal. Do not emit a complaint at this point, we will | |
9127 | do so when we convert this psymtab into a symtab. */ | |
9128 | if (pdi->name) | |
9129 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
9130 | } |
9131 | } | |
6e70227d | 9132 | |
bc30ff58 JB |
9133 | if (! pdi->has_children) |
9134 | return; | |
9135 | ||
9136 | if (cu->language == language_ada) | |
9137 | { | |
9138 | pdi = pdi->die_child; | |
9139 | while (pdi != NULL) | |
9140 | { | |
52356b79 | 9141 | pdi->fixup (cu); |
bc30ff58 | 9142 | if (pdi->tag == DW_TAG_subprogram |
b1dc1806 | 9143 | || pdi->tag == DW_TAG_inlined_subroutine |
bc30ff58 | 9144 | || pdi->tag == DW_TAG_lexical_block) |
cdc07690 | 9145 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
bc30ff58 JB |
9146 | pdi = pdi->die_sibling; |
9147 | } | |
9148 | } | |
9149 | } | |
9150 | ||
91c24f0a DC |
9151 | /* Read a partial die corresponding to an enumeration type. */ |
9152 | ||
72bf9492 DJ |
9153 | static void |
9154 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
9155 | struct dwarf2_cu *cu) | |
91c24f0a | 9156 | { |
72bf9492 | 9157 | struct partial_die_info *pdi; |
91c24f0a DC |
9158 | |
9159 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
9160 | add_partial_symbol (enum_pdi, cu); |
9161 | ||
9162 | pdi = enum_pdi->die_child; | |
9163 | while (pdi) | |
91c24f0a | 9164 | { |
72bf9492 | 9165 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
b98664d3 | 9166 | complaint (_("malformed enumerator DIE ignored")); |
91c24f0a | 9167 | else |
72bf9492 DJ |
9168 | add_partial_symbol (pdi, cu); |
9169 | pdi = pdi->die_sibling; | |
91c24f0a | 9170 | } |
91c24f0a DC |
9171 | } |
9172 | ||
6caca83c CC |
9173 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
9174 | ||
9175 | static unsigned int | |
d521ce57 | 9176 | peek_abbrev_code (bfd *abfd, const gdb_byte *info_ptr) |
6caca83c CC |
9177 | { |
9178 | unsigned int bytes_read; | |
9179 | ||
9180 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9181 | } | |
9182 | ||
685af9cd TT |
9183 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit |
9184 | READER::CU. Use READER::ABBREV_TABLE to lookup any abbreviation. | |
9185 | ||
4bb7a0a7 DJ |
9186 | Return the corresponding abbrev, or NULL if the number is zero (indicating |
9187 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
9188 | the initial number. */ | |
9189 | ||
9190 | static struct abbrev_info * | |
685af9cd TT |
9191 | peek_die_abbrev (const die_reader_specs &reader, |
9192 | const gdb_byte *info_ptr, unsigned int *bytes_read) | |
4bb7a0a7 | 9193 | { |
685af9cd | 9194 | dwarf2_cu *cu = reader.cu; |
518817b3 | 9195 | bfd *abfd = cu->per_cu->dwarf2_per_objfile->objfile->obfd; |
685af9cd TT |
9196 | unsigned int abbrev_number |
9197 | = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
4bb7a0a7 DJ |
9198 | |
9199 | if (abbrev_number == 0) | |
9200 | return NULL; | |
9201 | ||
685af9cd | 9202 | abbrev_info *abbrev = reader.abbrev_table->lookup_abbrev (abbrev_number); |
4bb7a0a7 DJ |
9203 | if (!abbrev) |
9204 | { | |
422b9917 | 9205 | error (_("Dwarf Error: Could not find abbrev number %d in %s" |
9d8780f0 | 9206 | " at offset %s [in module %s]"), |
422b9917 | 9207 | abbrev_number, cu->per_cu->is_debug_types ? "TU" : "CU", |
9d8780f0 | 9208 | sect_offset_str (cu->header.sect_off), bfd_get_filename (abfd)); |
4bb7a0a7 DJ |
9209 | } |
9210 | ||
9211 | return abbrev; | |
9212 | } | |
9213 | ||
93311388 DE |
9214 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
9215 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
9216 | DIE. Any children of the skipped DIEs will also be skipped. */ |
9217 | ||
d521ce57 TT |
9218 | static const gdb_byte * |
9219 | skip_children (const struct die_reader_specs *reader, const gdb_byte *info_ptr) | |
4bb7a0a7 | 9220 | { |
4bb7a0a7 DJ |
9221 | while (1) |
9222 | { | |
685af9cd TT |
9223 | unsigned int bytes_read; |
9224 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); | |
9225 | ||
4bb7a0a7 DJ |
9226 | if (abbrev == NULL) |
9227 | return info_ptr + bytes_read; | |
9228 | else | |
dee91e82 | 9229 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
9230 | } |
9231 | } | |
9232 | ||
93311388 DE |
9233 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
9234 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
9235 | abbrev corresponding to that skipped uleb128 should be passed in |
9236 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
9237 | children. */ | |
9238 | ||
d521ce57 TT |
9239 | static const gdb_byte * |
9240 | skip_one_die (const struct die_reader_specs *reader, const gdb_byte *info_ptr, | |
dee91e82 | 9241 | struct abbrev_info *abbrev) |
4bb7a0a7 DJ |
9242 | { |
9243 | unsigned int bytes_read; | |
9244 | struct attribute attr; | |
dee91e82 DE |
9245 | bfd *abfd = reader->abfd; |
9246 | struct dwarf2_cu *cu = reader->cu; | |
d521ce57 | 9247 | const gdb_byte *buffer = reader->buffer; |
f664829e | 9248 | const gdb_byte *buffer_end = reader->buffer_end; |
4bb7a0a7 DJ |
9249 | unsigned int form, i; |
9250 | ||
9251 | for (i = 0; i < abbrev->num_attrs; i++) | |
9252 | { | |
9253 | /* The only abbrev we care about is DW_AT_sibling. */ | |
9254 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
9255 | { | |
dee91e82 | 9256 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
4bb7a0a7 | 9257 | if (attr.form == DW_FORM_ref_addr) |
b98664d3 | 9258 | complaint (_("ignoring absolute DW_AT_sibling")); |
4bb7a0a7 | 9259 | else |
b9502d3f | 9260 | { |
9c541725 PA |
9261 | sect_offset off = dwarf2_get_ref_die_offset (&attr); |
9262 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); | |
b9502d3f WN |
9263 | |
9264 | if (sibling_ptr < info_ptr) | |
b98664d3 | 9265 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 KS |
9266 | else if (sibling_ptr > reader->buffer_end) |
9267 | dwarf2_section_buffer_overflow_complaint (reader->die_section); | |
b9502d3f WN |
9268 | else |
9269 | return sibling_ptr; | |
9270 | } | |
4bb7a0a7 DJ |
9271 | } |
9272 | ||
9273 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
9274 | form = abbrev->attrs[i].form; | |
9275 | skip_attribute: | |
9276 | switch (form) | |
9277 | { | |
4bb7a0a7 | 9278 | case DW_FORM_ref_addr: |
ae411497 TT |
9279 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
9280 | and later it is offset sized. */ | |
9281 | if (cu->header.version == 2) | |
9282 | info_ptr += cu->header.addr_size; | |
9283 | else | |
9284 | info_ptr += cu->header.offset_size; | |
9285 | break; | |
36586728 TT |
9286 | case DW_FORM_GNU_ref_alt: |
9287 | info_ptr += cu->header.offset_size; | |
9288 | break; | |
ae411497 | 9289 | case DW_FORM_addr: |
4bb7a0a7 DJ |
9290 | info_ptr += cu->header.addr_size; |
9291 | break; | |
9292 | case DW_FORM_data1: | |
9293 | case DW_FORM_ref1: | |
9294 | case DW_FORM_flag: | |
9295 | info_ptr += 1; | |
9296 | break; | |
2dc7f7b3 | 9297 | case DW_FORM_flag_present: |
43988095 | 9298 | case DW_FORM_implicit_const: |
2dc7f7b3 | 9299 | break; |
4bb7a0a7 DJ |
9300 | case DW_FORM_data2: |
9301 | case DW_FORM_ref2: | |
9302 | info_ptr += 2; | |
9303 | break; | |
9304 | case DW_FORM_data4: | |
9305 | case DW_FORM_ref4: | |
9306 | info_ptr += 4; | |
9307 | break; | |
9308 | case DW_FORM_data8: | |
9309 | case DW_FORM_ref8: | |
55f1336d | 9310 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
9311 | info_ptr += 8; |
9312 | break; | |
0224619f JK |
9313 | case DW_FORM_data16: |
9314 | info_ptr += 16; | |
9315 | break; | |
4bb7a0a7 | 9316 | case DW_FORM_string: |
9b1c24c8 | 9317 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
9318 | info_ptr += bytes_read; |
9319 | break; | |
2dc7f7b3 | 9320 | case DW_FORM_sec_offset: |
4bb7a0a7 | 9321 | case DW_FORM_strp: |
36586728 | 9322 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
9323 | info_ptr += cu->header.offset_size; |
9324 | break; | |
2dc7f7b3 | 9325 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
9326 | case DW_FORM_block: |
9327 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9328 | info_ptr += bytes_read; | |
9329 | break; | |
9330 | case DW_FORM_block1: | |
9331 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
9332 | break; | |
9333 | case DW_FORM_block2: | |
9334 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
9335 | break; | |
9336 | case DW_FORM_block4: | |
9337 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
9338 | break; | |
9339 | case DW_FORM_sdata: | |
9340 | case DW_FORM_udata: | |
9341 | case DW_FORM_ref_udata: | |
3019eac3 DE |
9342 | case DW_FORM_GNU_addr_index: |
9343 | case DW_FORM_GNU_str_index: | |
d521ce57 | 9344 | info_ptr = safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
9345 | break; |
9346 | case DW_FORM_indirect: | |
9347 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9348 | info_ptr += bytes_read; | |
9349 | /* We need to continue parsing from here, so just go back to | |
9350 | the top. */ | |
9351 | goto skip_attribute; | |
9352 | ||
9353 | default: | |
3e43a32a MS |
9354 | error (_("Dwarf Error: Cannot handle %s " |
9355 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
9356 | dwarf_form_name (form), |
9357 | bfd_get_filename (abfd)); | |
9358 | } | |
9359 | } | |
9360 | ||
9361 | if (abbrev->has_children) | |
dee91e82 | 9362 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
9363 | else |
9364 | return info_ptr; | |
9365 | } | |
9366 | ||
93311388 | 9367 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 9368 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 9369 | |
d521ce57 | 9370 | static const gdb_byte * |
dee91e82 DE |
9371 | locate_pdi_sibling (const struct die_reader_specs *reader, |
9372 | struct partial_die_info *orig_pdi, | |
d521ce57 | 9373 | const gdb_byte *info_ptr) |
91c24f0a DC |
9374 | { |
9375 | /* Do we know the sibling already? */ | |
72bf9492 | 9376 | |
91c24f0a DC |
9377 | if (orig_pdi->sibling) |
9378 | return orig_pdi->sibling; | |
9379 | ||
9380 | /* Are there any children to deal with? */ | |
9381 | ||
9382 | if (!orig_pdi->has_children) | |
9383 | return info_ptr; | |
9384 | ||
4bb7a0a7 | 9385 | /* Skip the children the long way. */ |
91c24f0a | 9386 | |
dee91e82 | 9387 | return skip_children (reader, info_ptr); |
91c24f0a DC |
9388 | } |
9389 | ||
257e7a09 | 9390 | /* Expand this partial symbol table into a full symbol table. SELF is |
442e4d9c | 9391 | not NULL. */ |
c906108c SS |
9392 | |
9393 | static void | |
257e7a09 YQ |
9394 | dwarf2_read_symtab (struct partial_symtab *self, |
9395 | struct objfile *objfile) | |
c906108c | 9396 | { |
ed2dc618 SM |
9397 | struct dwarf2_per_objfile *dwarf2_per_objfile |
9398 | = get_dwarf2_per_objfile (objfile); | |
9399 | ||
257e7a09 | 9400 | if (self->readin) |
c906108c | 9401 | { |
442e4d9c | 9402 | warning (_("bug: psymtab for %s is already read in."), |
257e7a09 | 9403 | self->filename); |
442e4d9c YQ |
9404 | } |
9405 | else | |
9406 | { | |
9407 | if (info_verbose) | |
c906108c | 9408 | { |
442e4d9c | 9409 | printf_filtered (_("Reading in symbols for %s..."), |
257e7a09 | 9410 | self->filename); |
442e4d9c | 9411 | gdb_flush (gdb_stdout); |
c906108c | 9412 | } |
c906108c | 9413 | |
442e4d9c YQ |
9414 | /* If this psymtab is constructed from a debug-only objfile, the |
9415 | has_section_at_zero flag will not necessarily be correct. We | |
9416 | can get the correct value for this flag by looking at the data | |
9417 | associated with the (presumably stripped) associated objfile. */ | |
9418 | if (objfile->separate_debug_objfile_backlink) | |
9419 | { | |
9420 | struct dwarf2_per_objfile *dpo_backlink | |
ed2dc618 | 9421 | = get_dwarf2_per_objfile (objfile->separate_debug_objfile_backlink); |
9a619af0 | 9422 | |
442e4d9c YQ |
9423 | dwarf2_per_objfile->has_section_at_zero |
9424 | = dpo_backlink->has_section_at_zero; | |
9425 | } | |
b2ab525c | 9426 | |
442e4d9c | 9427 | dwarf2_per_objfile->reading_partial_symbols = 0; |
98bfdba5 | 9428 | |
257e7a09 | 9429 | psymtab_to_symtab_1 (self); |
c906108c | 9430 | |
442e4d9c YQ |
9431 | /* Finish up the debug error message. */ |
9432 | if (info_verbose) | |
9433 | printf_filtered (_("done.\n")); | |
c906108c | 9434 | } |
95554aad | 9435 | |
ed2dc618 | 9436 | process_cu_includes (dwarf2_per_objfile); |
c906108c | 9437 | } |
9cdd5dbd DE |
9438 | \f |
9439 | /* Reading in full CUs. */ | |
c906108c | 9440 | |
10b3939b DJ |
9441 | /* Add PER_CU to the queue. */ |
9442 | ||
9443 | static void | |
95554aad TT |
9444 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
9445 | enum language pretend_language) | |
10b3939b DJ |
9446 | { |
9447 | struct dwarf2_queue_item *item; | |
9448 | ||
9449 | per_cu->queued = 1; | |
8d749320 | 9450 | item = XNEW (struct dwarf2_queue_item); |
10b3939b | 9451 | item->per_cu = per_cu; |
95554aad | 9452 | item->pretend_language = pretend_language; |
10b3939b DJ |
9453 | item->next = NULL; |
9454 | ||
9455 | if (dwarf2_queue == NULL) | |
9456 | dwarf2_queue = item; | |
9457 | else | |
9458 | dwarf2_queue_tail->next = item; | |
9459 | ||
9460 | dwarf2_queue_tail = item; | |
9461 | } | |
9462 | ||
89e63ee4 DE |
9463 | /* If PER_CU is not yet queued, add it to the queue. |
9464 | If DEPENDENT_CU is non-NULL, it has a reference to PER_CU so add a | |
9465 | dependency. | |
0907af0c | 9466 | The result is non-zero if PER_CU was queued, otherwise the result is zero |
69d751e3 DE |
9467 | meaning either PER_CU is already queued or it is already loaded. |
9468 | ||
9469 | N.B. There is an invariant here that if a CU is queued then it is loaded. | |
9470 | The caller is required to load PER_CU if we return non-zero. */ | |
0907af0c DE |
9471 | |
9472 | static int | |
89e63ee4 | 9473 | maybe_queue_comp_unit (struct dwarf2_cu *dependent_cu, |
0907af0c DE |
9474 | struct dwarf2_per_cu_data *per_cu, |
9475 | enum language pretend_language) | |
9476 | { | |
9477 | /* We may arrive here during partial symbol reading, if we need full | |
9478 | DIEs to process an unusual case (e.g. template arguments). Do | |
9479 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
ed2dc618 | 9480 | if (per_cu->dwarf2_per_objfile->reading_partial_symbols) |
0907af0c DE |
9481 | { |
9482 | if (per_cu->cu == NULL || per_cu->cu->dies == NULL) | |
9483 | return 1; | |
9484 | return 0; | |
9485 | } | |
9486 | ||
9487 | /* Mark the dependence relation so that we don't flush PER_CU | |
9488 | too early. */ | |
89e63ee4 DE |
9489 | if (dependent_cu != NULL) |
9490 | dwarf2_add_dependence (dependent_cu, per_cu); | |
0907af0c DE |
9491 | |
9492 | /* If it's already on the queue, we have nothing to do. */ | |
9493 | if (per_cu->queued) | |
9494 | return 0; | |
9495 | ||
9496 | /* If the compilation unit is already loaded, just mark it as | |
9497 | used. */ | |
9498 | if (per_cu->cu != NULL) | |
9499 | { | |
9500 | per_cu->cu->last_used = 0; | |
9501 | return 0; | |
9502 | } | |
9503 | ||
9504 | /* Add it to the queue. */ | |
9505 | queue_comp_unit (per_cu, pretend_language); | |
9506 | ||
9507 | return 1; | |
9508 | } | |
9509 | ||
10b3939b DJ |
9510 | /* Process the queue. */ |
9511 | ||
9512 | static void | |
ed2dc618 | 9513 | process_queue (struct dwarf2_per_objfile *dwarf2_per_objfile) |
10b3939b DJ |
9514 | { |
9515 | struct dwarf2_queue_item *item, *next_item; | |
9516 | ||
b4f54984 | 9517 | if (dwarf_read_debug) |
45cfd468 DE |
9518 | { |
9519 | fprintf_unfiltered (gdb_stdlog, | |
9520 | "Expanding one or more symtabs of objfile %s ...\n", | |
4262abfb | 9521 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 DE |
9522 | } |
9523 | ||
03dd20cc DJ |
9524 | /* The queue starts out with one item, but following a DIE reference |
9525 | may load a new CU, adding it to the end of the queue. */ | |
10b3939b DJ |
9526 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) |
9527 | { | |
cc12ce38 DE |
9528 | if ((dwarf2_per_objfile->using_index |
9529 | ? !item->per_cu->v.quick->compunit_symtab | |
9530 | : (item->per_cu->v.psymtab && !item->per_cu->v.psymtab->readin)) | |
9531 | /* Skip dummy CUs. */ | |
9532 | && item->per_cu->cu != NULL) | |
f4dc4d17 DE |
9533 | { |
9534 | struct dwarf2_per_cu_data *per_cu = item->per_cu; | |
73be47f5 | 9535 | unsigned int debug_print_threshold; |
247f5c4f | 9536 | char buf[100]; |
f4dc4d17 | 9537 | |
247f5c4f | 9538 | if (per_cu->is_debug_types) |
f4dc4d17 | 9539 | { |
247f5c4f DE |
9540 | struct signatured_type *sig_type = |
9541 | (struct signatured_type *) per_cu; | |
9542 | ||
9d8780f0 | 9543 | sprintf (buf, "TU %s at offset %s", |
73be47f5 | 9544 | hex_string (sig_type->signature), |
9d8780f0 | 9545 | sect_offset_str (per_cu->sect_off)); |
73be47f5 DE |
9546 | /* There can be 100s of TUs. |
9547 | Only print them in verbose mode. */ | |
9548 | debug_print_threshold = 2; | |
f4dc4d17 | 9549 | } |
247f5c4f | 9550 | else |
73be47f5 | 9551 | { |
9d8780f0 SM |
9552 | sprintf (buf, "CU at offset %s", |
9553 | sect_offset_str (per_cu->sect_off)); | |
73be47f5 DE |
9554 | debug_print_threshold = 1; |
9555 | } | |
247f5c4f | 9556 | |
b4f54984 | 9557 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 9558 | fprintf_unfiltered (gdb_stdlog, "Expanding symtab of %s\n", buf); |
f4dc4d17 DE |
9559 | |
9560 | if (per_cu->is_debug_types) | |
9561 | process_full_type_unit (per_cu, item->pretend_language); | |
9562 | else | |
9563 | process_full_comp_unit (per_cu, item->pretend_language); | |
9564 | ||
b4f54984 | 9565 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 9566 | fprintf_unfiltered (gdb_stdlog, "Done expanding %s\n", buf); |
f4dc4d17 | 9567 | } |
10b3939b DJ |
9568 | |
9569 | item->per_cu->queued = 0; | |
9570 | next_item = item->next; | |
9571 | xfree (item); | |
9572 | } | |
9573 | ||
9574 | dwarf2_queue_tail = NULL; | |
45cfd468 | 9575 | |
b4f54984 | 9576 | if (dwarf_read_debug) |
45cfd468 DE |
9577 | { |
9578 | fprintf_unfiltered (gdb_stdlog, "Done expanding symtabs of %s.\n", | |
4262abfb | 9579 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 | 9580 | } |
10b3939b DJ |
9581 | } |
9582 | ||
10b3939b DJ |
9583 | /* Read in full symbols for PST, and anything it depends on. */ |
9584 | ||
c906108c | 9585 | static void |
fba45db2 | 9586 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c | 9587 | { |
10b3939b | 9588 | struct dwarf2_per_cu_data *per_cu; |
aaa75496 JB |
9589 | int i; |
9590 | ||
95554aad TT |
9591 | if (pst->readin) |
9592 | return; | |
9593 | ||
aaa75496 | 9594 | for (i = 0; i < pst->number_of_dependencies; i++) |
95554aad TT |
9595 | if (!pst->dependencies[i]->readin |
9596 | && pst->dependencies[i]->user == NULL) | |
aaa75496 JB |
9597 | { |
9598 | /* Inform about additional files that need to be read in. */ | |
9599 | if (info_verbose) | |
9600 | { | |
a3f17187 | 9601 | /* FIXME: i18n: Need to make this a single string. */ |
aaa75496 JB |
9602 | fputs_filtered (" ", gdb_stdout); |
9603 | wrap_here (""); | |
9604 | fputs_filtered ("and ", gdb_stdout); | |
9605 | wrap_here (""); | |
9606 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
0963b4bd | 9607 | wrap_here (""); /* Flush output. */ |
aaa75496 JB |
9608 | gdb_flush (gdb_stdout); |
9609 | } | |
9610 | psymtab_to_symtab_1 (pst->dependencies[i]); | |
9611 | } | |
9612 | ||
9a3c8263 | 9613 | per_cu = (struct dwarf2_per_cu_data *) pst->read_symtab_private; |
10b3939b DJ |
9614 | |
9615 | if (per_cu == NULL) | |
aaa75496 JB |
9616 | { |
9617 | /* It's an include file, no symbols to read for it. | |
9618 | Everything is in the parent symtab. */ | |
9619 | pst->readin = 1; | |
9620 | return; | |
9621 | } | |
c906108c | 9622 | |
58f0c718 | 9623 | dw2_do_instantiate_symtab (per_cu, false); |
10b3939b DJ |
9624 | } |
9625 | ||
dee91e82 DE |
9626 | /* Trivial hash function for die_info: the hash value of a DIE |
9627 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 9628 | |
dee91e82 DE |
9629 | static hashval_t |
9630 | die_hash (const void *item) | |
10b3939b | 9631 | { |
9a3c8263 | 9632 | const struct die_info *die = (const struct die_info *) item; |
6502dd73 | 9633 | |
9c541725 | 9634 | return to_underlying (die->sect_off); |
dee91e82 | 9635 | } |
63d06c5c | 9636 | |
dee91e82 DE |
9637 | /* Trivial comparison function for die_info structures: two DIEs |
9638 | are equal if they have the same offset. */ | |
98bfdba5 | 9639 | |
dee91e82 DE |
9640 | static int |
9641 | die_eq (const void *item_lhs, const void *item_rhs) | |
9642 | { | |
9a3c8263 SM |
9643 | const struct die_info *die_lhs = (const struct die_info *) item_lhs; |
9644 | const struct die_info *die_rhs = (const struct die_info *) item_rhs; | |
c906108c | 9645 | |
9c541725 | 9646 | return die_lhs->sect_off == die_rhs->sect_off; |
dee91e82 | 9647 | } |
c906108c | 9648 | |
dee91e82 DE |
9649 | /* die_reader_func for load_full_comp_unit. |
9650 | This is identical to read_signatured_type_reader, | |
9651 | but is kept separate for now. */ | |
c906108c | 9652 | |
dee91e82 DE |
9653 | static void |
9654 | load_full_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 9655 | const gdb_byte *info_ptr, |
dee91e82 DE |
9656 | struct die_info *comp_unit_die, |
9657 | int has_children, | |
9658 | void *data) | |
9659 | { | |
9660 | struct dwarf2_cu *cu = reader->cu; | |
9a3c8263 | 9661 | enum language *language_ptr = (enum language *) data; |
6caca83c | 9662 | |
dee91e82 DE |
9663 | gdb_assert (cu->die_hash == NULL); |
9664 | cu->die_hash = | |
9665 | htab_create_alloc_ex (cu->header.length / 12, | |
9666 | die_hash, | |
9667 | die_eq, | |
9668 | NULL, | |
9669 | &cu->comp_unit_obstack, | |
9670 | hashtab_obstack_allocate, | |
9671 | dummy_obstack_deallocate); | |
e142c38c | 9672 | |
dee91e82 DE |
9673 | if (has_children) |
9674 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
9675 | &info_ptr, comp_unit_die); | |
9676 | cu->dies = comp_unit_die; | |
9677 | /* comp_unit_die is not stored in die_hash, no need. */ | |
10b3939b DJ |
9678 | |
9679 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 9680 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 9681 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
9682 | or we won't be able to build types correctly. |
9683 | Similarly, if we do not read the producer, we can not apply | |
9684 | producer-specific interpretation. */ | |
95554aad | 9685 | prepare_one_comp_unit (cu, cu->dies, *language_ptr); |
dee91e82 | 9686 | } |
10b3939b | 9687 | |
dee91e82 | 9688 | /* Load the DIEs associated with PER_CU into memory. */ |
a6c727b2 | 9689 | |
dee91e82 | 9690 | static void |
95554aad | 9691 | load_full_comp_unit (struct dwarf2_per_cu_data *this_cu, |
58f0c718 | 9692 | bool skip_partial, |
95554aad | 9693 | enum language pretend_language) |
dee91e82 | 9694 | { |
3019eac3 | 9695 | gdb_assert (! this_cu->is_debug_types); |
c5b7e1cb | 9696 | |
58f0c718 | 9697 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, skip_partial, |
f4dc4d17 | 9698 | load_full_comp_unit_reader, &pretend_language); |
10b3939b DJ |
9699 | } |
9700 | ||
3da10d80 KS |
9701 | /* Add a DIE to the delayed physname list. */ |
9702 | ||
9703 | static void | |
9704 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
9705 | const char *name, struct die_info *die, | |
9706 | struct dwarf2_cu *cu) | |
9707 | { | |
9708 | struct delayed_method_info mi; | |
9709 | mi.type = type; | |
9710 | mi.fnfield_index = fnfield_index; | |
9711 | mi.index = index; | |
9712 | mi.name = name; | |
9713 | mi.die = die; | |
c89b44cd | 9714 | cu->method_list.push_back (mi); |
3da10d80 KS |
9715 | } |
9716 | ||
3693fdb3 PA |
9717 | /* Check whether [PHYSNAME, PHYSNAME+LEN) ends with a modifier like |
9718 | "const" / "volatile". If so, decrements LEN by the length of the | |
9719 | modifier and return true. Otherwise return false. */ | |
9720 | ||
9721 | template<size_t N> | |
9722 | static bool | |
9723 | check_modifier (const char *physname, size_t &len, const char (&mod)[N]) | |
9724 | { | |
9725 | size_t mod_len = sizeof (mod) - 1; | |
9726 | if (len > mod_len && startswith (physname + (len - mod_len), mod)) | |
9727 | { | |
9728 | len -= mod_len; | |
9729 | return true; | |
9730 | } | |
9731 | return false; | |
9732 | } | |
9733 | ||
3da10d80 KS |
9734 | /* Compute the physnames of any methods on the CU's method list. |
9735 | ||
9736 | The computation of method physnames is delayed in order to avoid the | |
9737 | (bad) condition that one of the method's formal parameters is of an as yet | |
9738 | incomplete type. */ | |
9739 | ||
9740 | static void | |
9741 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
9742 | { | |
3693fdb3 | 9743 | /* Only C++ delays computing physnames. */ |
c89b44cd | 9744 | if (cu->method_list.empty ()) |
3693fdb3 PA |
9745 | return; |
9746 | gdb_assert (cu->language == language_cplus); | |
9747 | ||
52941706 | 9748 | for (const delayed_method_info &mi : cu->method_list) |
3da10d80 | 9749 | { |
1d06ead6 | 9750 | const char *physname; |
3da10d80 | 9751 | struct fn_fieldlist *fn_flp |
c89b44cd TT |
9752 | = &TYPE_FN_FIELDLIST (mi.type, mi.fnfield_index); |
9753 | physname = dwarf2_physname (mi.name, mi.die, cu); | |
9754 | TYPE_FN_FIELD_PHYSNAME (fn_flp->fn_fields, mi.index) | |
005e54bb | 9755 | = physname ? physname : ""; |
3693fdb3 PA |
9756 | |
9757 | /* Since there's no tag to indicate whether a method is a | |
9758 | const/volatile overload, extract that information out of the | |
9759 | demangled name. */ | |
9760 | if (physname != NULL) | |
9761 | { | |
9762 | size_t len = strlen (physname); | |
9763 | ||
9764 | while (1) | |
9765 | { | |
9766 | if (physname[len] == ')') /* shortcut */ | |
9767 | break; | |
9768 | else if (check_modifier (physname, len, " const")) | |
c89b44cd | 9769 | TYPE_FN_FIELD_CONST (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 | 9770 | else if (check_modifier (physname, len, " volatile")) |
c89b44cd | 9771 | TYPE_FN_FIELD_VOLATILE (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 PA |
9772 | else |
9773 | break; | |
9774 | } | |
9775 | } | |
3da10d80 | 9776 | } |
c89b44cd TT |
9777 | |
9778 | /* The list is no longer needed. */ | |
9779 | cu->method_list.clear (); | |
3da10d80 KS |
9780 | } |
9781 | ||
a766d390 DE |
9782 | /* Go objects should be embedded in a DW_TAG_module DIE, |
9783 | and it's not clear if/how imported objects will appear. | |
9784 | To keep Go support simple until that's worked out, | |
9785 | go back through what we've read and create something usable. | |
9786 | We could do this while processing each DIE, and feels kinda cleaner, | |
9787 | but that way is more invasive. | |
9788 | This is to, for example, allow the user to type "p var" or "b main" | |
9789 | without having to specify the package name, and allow lookups | |
9790 | of module.object to work in contexts that use the expression | |
9791 | parser. */ | |
9792 | ||
9793 | static void | |
9794 | fixup_go_packaging (struct dwarf2_cu *cu) | |
9795 | { | |
9796 | char *package_name = NULL; | |
9797 | struct pending *list; | |
9798 | int i; | |
9799 | ||
804d2729 TT |
9800 | for (list = *cu->builder->get_global_symbols (); |
9801 | list != NULL; | |
9802 | list = list->next) | |
a766d390 DE |
9803 | { |
9804 | for (i = 0; i < list->nsyms; ++i) | |
9805 | { | |
9806 | struct symbol *sym = list->symbol[i]; | |
9807 | ||
9808 | if (SYMBOL_LANGUAGE (sym) == language_go | |
9809 | && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
9810 | { | |
9811 | char *this_package_name = go_symbol_package_name (sym); | |
9812 | ||
9813 | if (this_package_name == NULL) | |
9814 | continue; | |
9815 | if (package_name == NULL) | |
9816 | package_name = this_package_name; | |
9817 | else | |
9818 | { | |
518817b3 SM |
9819 | struct objfile *objfile |
9820 | = cu->per_cu->dwarf2_per_objfile->objfile; | |
a766d390 | 9821 | if (strcmp (package_name, this_package_name) != 0) |
b98664d3 | 9822 | complaint (_("Symtab %s has objects from two different Go packages: %s and %s"), |
08be3fe3 DE |
9823 | (symbol_symtab (sym) != NULL |
9824 | ? symtab_to_filename_for_display | |
9825 | (symbol_symtab (sym)) | |
e3b94546 | 9826 | : objfile_name (objfile)), |
a766d390 DE |
9827 | this_package_name, package_name); |
9828 | xfree (this_package_name); | |
9829 | } | |
9830 | } | |
9831 | } | |
9832 | } | |
9833 | ||
9834 | if (package_name != NULL) | |
9835 | { | |
518817b3 | 9836 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
34a68019 | 9837 | const char *saved_package_name |
224c3ddb SM |
9838 | = (const char *) obstack_copy0 (&objfile->per_bfd->storage_obstack, |
9839 | package_name, | |
9840 | strlen (package_name)); | |
19f392bc UW |
9841 | struct type *type = init_type (objfile, TYPE_CODE_MODULE, 0, |
9842 | saved_package_name); | |
a766d390 DE |
9843 | struct symbol *sym; |
9844 | ||
e623cf5d | 9845 | sym = allocate_symbol (objfile); |
f85f34ed | 9846 | SYMBOL_SET_LANGUAGE (sym, language_go, &objfile->objfile_obstack); |
86f62fd7 TT |
9847 | SYMBOL_SET_NAMES (sym, saved_package_name, |
9848 | strlen (saved_package_name), 0, objfile); | |
a766d390 DE |
9849 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, |
9850 | e.g., "main" finds the "main" module and not C's main(). */ | |
9851 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
f1e6e072 | 9852 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
a766d390 DE |
9853 | SYMBOL_TYPE (sym) = type; |
9854 | ||
d3cb6808 | 9855 | add_symbol_to_list (sym, cu->builder->get_global_symbols ()); |
a766d390 DE |
9856 | |
9857 | xfree (package_name); | |
9858 | } | |
9859 | } | |
9860 | ||
c9317f21 TT |
9861 | /* Allocate a fully-qualified name consisting of the two parts on the |
9862 | obstack. */ | |
9863 | ||
9864 | static const char * | |
9865 | rust_fully_qualify (struct obstack *obstack, const char *p1, const char *p2) | |
9866 | { | |
9867 | return obconcat (obstack, p1, "::", p2, (char *) NULL); | |
9868 | } | |
9869 | ||
9870 | /* A helper that allocates a struct discriminant_info to attach to a | |
9871 | union type. */ | |
9872 | ||
9873 | static struct discriminant_info * | |
9874 | alloc_discriminant_info (struct type *type, int discriminant_index, | |
9875 | int default_index) | |
9876 | { | |
9877 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_UNION); | |
c7b15a66 TT |
9878 | gdb_assert (discriminant_index == -1 |
9879 | || (discriminant_index >= 0 | |
9880 | && discriminant_index < TYPE_NFIELDS (type))); | |
c9317f21 | 9881 | gdb_assert (default_index == -1 |
c7b15a66 | 9882 | || (default_index >= 0 && default_index < TYPE_NFIELDS (type))); |
c9317f21 TT |
9883 | |
9884 | TYPE_FLAG_DISCRIMINATED_UNION (type) = 1; | |
9885 | ||
9886 | struct discriminant_info *disc | |
9887 | = ((struct discriminant_info *) | |
9888 | TYPE_ZALLOC (type, | |
9889 | offsetof (struct discriminant_info, discriminants) | |
9890 | + TYPE_NFIELDS (type) * sizeof (disc->discriminants[0]))); | |
9891 | disc->default_index = default_index; | |
9892 | disc->discriminant_index = discriminant_index; | |
9893 | ||
9894 | struct dynamic_prop prop; | |
9895 | prop.kind = PROP_UNDEFINED; | |
9896 | prop.data.baton = disc; | |
9897 | ||
9898 | add_dyn_prop (DYN_PROP_DISCRIMINATED, prop, type); | |
9899 | ||
9900 | return disc; | |
9901 | } | |
9902 | ||
9903 | /* Some versions of rustc emitted enums in an unusual way. | |
9904 | ||
9905 | Ordinary enums were emitted as unions. The first element of each | |
9906 | structure in the union was named "RUST$ENUM$DISR". This element | |
9907 | held the discriminant. | |
9908 | ||
9909 | These versions of Rust also implemented the "non-zero" | |
9910 | optimization. When the enum had two values, and one is empty and | |
9911 | the other holds a pointer that cannot be zero, the pointer is used | |
9912 | as the discriminant, with a zero value meaning the empty variant. | |
9913 | Here, the union's first member is of the form | |
9914 | RUST$ENCODED$ENUM$<fieldno>$<fieldno>$...$<variantname> | |
9915 | where the fieldnos are the indices of the fields that should be | |
9916 | traversed in order to find the field (which may be several fields deep) | |
9917 | and the variantname is the name of the variant of the case when the | |
9918 | field is zero. | |
9919 | ||
9920 | This function recognizes whether TYPE is of one of these forms, | |
9921 | and, if so, smashes it to be a variant type. */ | |
9922 | ||
9923 | static void | |
9924 | quirk_rust_enum (struct type *type, struct objfile *objfile) | |
9925 | { | |
9926 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_UNION); | |
9927 | ||
9928 | /* We don't need to deal with empty enums. */ | |
9929 | if (TYPE_NFIELDS (type) == 0) | |
9930 | return; | |
9931 | ||
9932 | #define RUST_ENUM_PREFIX "RUST$ENCODED$ENUM$" | |
9933 | if (TYPE_NFIELDS (type) == 1 | |
9934 | && startswith (TYPE_FIELD_NAME (type, 0), RUST_ENUM_PREFIX)) | |
9935 | { | |
9936 | const char *name = TYPE_FIELD_NAME (type, 0) + strlen (RUST_ENUM_PREFIX); | |
9937 | ||
9938 | /* Decode the field name to find the offset of the | |
9939 | discriminant. */ | |
9940 | ULONGEST bit_offset = 0; | |
9941 | struct type *field_type = TYPE_FIELD_TYPE (type, 0); | |
9942 | while (name[0] >= '0' && name[0] <= '9') | |
9943 | { | |
9944 | char *tail; | |
9945 | unsigned long index = strtoul (name, &tail, 10); | |
9946 | name = tail; | |
9947 | if (*name != '$' | |
9948 | || index >= TYPE_NFIELDS (field_type) | |
9949 | || (TYPE_FIELD_LOC_KIND (field_type, index) | |
9950 | != FIELD_LOC_KIND_BITPOS)) | |
9951 | { | |
b98664d3 | 9952 | complaint (_("Could not parse Rust enum encoding string \"%s\"" |
c9317f21 TT |
9953 | "[in module %s]"), |
9954 | TYPE_FIELD_NAME (type, 0), | |
9955 | objfile_name (objfile)); | |
9956 | return; | |
9957 | } | |
9958 | ++name; | |
9959 | ||
9960 | bit_offset += TYPE_FIELD_BITPOS (field_type, index); | |
9961 | field_type = TYPE_FIELD_TYPE (field_type, index); | |
9962 | } | |
9963 | ||
9964 | /* Make a union to hold the variants. */ | |
9965 | struct type *union_type = alloc_type (objfile); | |
9966 | TYPE_CODE (union_type) = TYPE_CODE_UNION; | |
9967 | TYPE_NFIELDS (union_type) = 3; | |
9968 | TYPE_FIELDS (union_type) | |
9969 | = (struct field *) TYPE_ZALLOC (type, 3 * sizeof (struct field)); | |
9970 | TYPE_LENGTH (union_type) = TYPE_LENGTH (type); | |
2b4424c3 | 9971 | set_type_align (union_type, TYPE_RAW_ALIGN (type)); |
c9317f21 TT |
9972 | |
9973 | /* Put the discriminant must at index 0. */ | |
9974 | TYPE_FIELD_TYPE (union_type, 0) = field_type; | |
9975 | TYPE_FIELD_ARTIFICIAL (union_type, 0) = 1; | |
9976 | TYPE_FIELD_NAME (union_type, 0) = "<<discriminant>>"; | |
9977 | SET_FIELD_BITPOS (TYPE_FIELD (union_type, 0), bit_offset); | |
9978 | ||
9979 | /* The order of fields doesn't really matter, so put the real | |
9980 | field at index 1 and the data-less field at index 2. */ | |
9981 | struct discriminant_info *disc | |
9982 | = alloc_discriminant_info (union_type, 0, 1); | |
9983 | TYPE_FIELD (union_type, 1) = TYPE_FIELD (type, 0); | |
9984 | TYPE_FIELD_NAME (union_type, 1) | |
9985 | = rust_last_path_segment (TYPE_NAME (TYPE_FIELD_TYPE (union_type, 1))); | |
9986 | TYPE_NAME (TYPE_FIELD_TYPE (union_type, 1)) | |
9987 | = rust_fully_qualify (&objfile->objfile_obstack, TYPE_NAME (type), | |
9988 | TYPE_FIELD_NAME (union_type, 1)); | |
9989 | ||
9990 | const char *dataless_name | |
9991 | = rust_fully_qualify (&objfile->objfile_obstack, TYPE_NAME (type), | |
9992 | name); | |
9993 | struct type *dataless_type = init_type (objfile, TYPE_CODE_VOID, 0, | |
9994 | dataless_name); | |
9995 | TYPE_FIELD_TYPE (union_type, 2) = dataless_type; | |
9996 | /* NAME points into the original discriminant name, which | |
9997 | already has the correct lifetime. */ | |
9998 | TYPE_FIELD_NAME (union_type, 2) = name; | |
9999 | SET_FIELD_BITPOS (TYPE_FIELD (union_type, 2), 0); | |
10000 | disc->discriminants[2] = 0; | |
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 | TYPE_NFIELDS (type) = 1; | |
10006 | TYPE_FIELDS (type) | |
10007 | = (struct field *) TYPE_ZALLOC (type, sizeof (struct field)); | |
10008 | ||
10009 | /* Install the variant part. */ | |
10010 | TYPE_FIELD_TYPE (type, 0) = union_type; | |
10011 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), 0); | |
10012 | TYPE_FIELD_NAME (type, 0) = "<<variants>>"; | |
10013 | } | |
10014 | else if (TYPE_NFIELDS (type) == 1) | |
10015 | { | |
10016 | /* We assume that a union with a single field is a univariant | |
10017 | enum. */ | |
10018 | /* Smash this type to be a structure type. We have to do this | |
10019 | because the type has already been recorded. */ | |
10020 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
10021 | ||
10022 | /* Make a union to hold the variants. */ | |
10023 | struct type *union_type = alloc_type (objfile); | |
10024 | TYPE_CODE (union_type) = TYPE_CODE_UNION; | |
10025 | TYPE_NFIELDS (union_type) = TYPE_NFIELDS (type); | |
10026 | TYPE_LENGTH (union_type) = TYPE_LENGTH (type); | |
2b4424c3 | 10027 | set_type_align (union_type, TYPE_RAW_ALIGN (type)); |
c9317f21 TT |
10028 | TYPE_FIELDS (union_type) = TYPE_FIELDS (type); |
10029 | ||
10030 | struct type *field_type = TYPE_FIELD_TYPE (union_type, 0); | |
10031 | const char *variant_name | |
10032 | = rust_last_path_segment (TYPE_NAME (field_type)); | |
10033 | TYPE_FIELD_NAME (union_type, 0) = variant_name; | |
10034 | TYPE_NAME (field_type) | |
10035 | = rust_fully_qualify (&objfile->objfile_obstack, | |
c7b15a66 | 10036 | TYPE_NAME (type), variant_name); |
c9317f21 TT |
10037 | |
10038 | /* Install the union in the outer struct type. */ | |
10039 | TYPE_NFIELDS (type) = 1; | |
10040 | TYPE_FIELDS (type) | |
10041 | = (struct field *) TYPE_ZALLOC (union_type, sizeof (struct field)); | |
10042 | TYPE_FIELD_TYPE (type, 0) = union_type; | |
10043 | TYPE_FIELD_NAME (type, 0) = "<<variants>>"; | |
10044 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), 0); | |
10045 | ||
10046 | alloc_discriminant_info (union_type, -1, 0); | |
10047 | } | |
10048 | else | |
10049 | { | |
10050 | struct type *disr_type = nullptr; | |
10051 | for (int i = 0; i < TYPE_NFIELDS (type); ++i) | |
10052 | { | |
10053 | disr_type = TYPE_FIELD_TYPE (type, i); | |
10054 | ||
a037790e TT |
10055 | if (TYPE_CODE (disr_type) != TYPE_CODE_STRUCT) |
10056 | { | |
10057 | /* All fields of a true enum will be structs. */ | |
10058 | return; | |
10059 | } | |
10060 | else if (TYPE_NFIELDS (disr_type) == 0) | |
c9317f21 TT |
10061 | { |
10062 | /* Could be data-less variant, so keep going. */ | |
a037790e | 10063 | disr_type = nullptr; |
c9317f21 TT |
10064 | } |
10065 | else if (strcmp (TYPE_FIELD_NAME (disr_type, 0), | |
10066 | "RUST$ENUM$DISR") != 0) | |
10067 | { | |
10068 | /* Not a Rust enum. */ | |
10069 | return; | |
10070 | } | |
10071 | else | |
10072 | { | |
10073 | /* Found one. */ | |
10074 | break; | |
10075 | } | |
10076 | } | |
10077 | ||
10078 | /* If we got here without a discriminant, then it's probably | |
10079 | just a union. */ | |
10080 | if (disr_type == nullptr) | |
10081 | return; | |
10082 | ||
10083 | /* Smash this type to be a structure type. We have to do this | |
10084 | because the type has already been recorded. */ | |
10085 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
10086 | ||
10087 | /* Make a union to hold the variants. */ | |
10088 | struct field *disr_field = &TYPE_FIELD (disr_type, 0); | |
10089 | struct type *union_type = alloc_type (objfile); | |
10090 | TYPE_CODE (union_type) = TYPE_CODE_UNION; | |
10091 | TYPE_NFIELDS (union_type) = 1 + TYPE_NFIELDS (type); | |
10092 | TYPE_LENGTH (union_type) = TYPE_LENGTH (type); | |
2b4424c3 | 10093 | set_type_align (union_type, TYPE_RAW_ALIGN (type)); |
c9317f21 TT |
10094 | TYPE_FIELDS (union_type) |
10095 | = (struct field *) TYPE_ZALLOC (union_type, | |
10096 | (TYPE_NFIELDS (union_type) | |
10097 | * sizeof (struct field))); | |
10098 | ||
10099 | memcpy (TYPE_FIELDS (union_type) + 1, TYPE_FIELDS (type), | |
10100 | TYPE_NFIELDS (type) * sizeof (struct field)); | |
10101 | ||
10102 | /* Install the discriminant at index 0 in the union. */ | |
10103 | TYPE_FIELD (union_type, 0) = *disr_field; | |
10104 | TYPE_FIELD_ARTIFICIAL (union_type, 0) = 1; | |
10105 | TYPE_FIELD_NAME (union_type, 0) = "<<discriminant>>"; | |
10106 | ||
10107 | /* Install the union in the outer struct type. */ | |
10108 | TYPE_FIELD_TYPE (type, 0) = union_type; | |
10109 | TYPE_FIELD_NAME (type, 0) = "<<variants>>"; | |
10110 | TYPE_NFIELDS (type) = 1; | |
10111 | ||
10112 | /* Set the size and offset of the union type. */ | |
10113 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), 0); | |
10114 | ||
10115 | /* We need a way to find the correct discriminant given a | |
10116 | variant name. For convenience we build a map here. */ | |
10117 | struct type *enum_type = FIELD_TYPE (*disr_field); | |
10118 | std::unordered_map<std::string, ULONGEST> discriminant_map; | |
10119 | for (int i = 0; i < TYPE_NFIELDS (enum_type); ++i) | |
10120 | { | |
10121 | if (TYPE_FIELD_LOC_KIND (enum_type, i) == FIELD_LOC_KIND_ENUMVAL) | |
10122 | { | |
10123 | const char *name | |
10124 | = rust_last_path_segment (TYPE_FIELD_NAME (enum_type, i)); | |
10125 | discriminant_map[name] = TYPE_FIELD_ENUMVAL (enum_type, i); | |
10126 | } | |
10127 | } | |
10128 | ||
10129 | int n_fields = TYPE_NFIELDS (union_type); | |
10130 | struct discriminant_info *disc | |
10131 | = alloc_discriminant_info (union_type, 0, -1); | |
10132 | /* Skip the discriminant here. */ | |
10133 | for (int i = 1; i < n_fields; ++i) | |
10134 | { | |
10135 | /* Find the final word in the name of this variant's type. | |
10136 | That name can be used to look up the correct | |
10137 | discriminant. */ | |
10138 | const char *variant_name | |
10139 | = rust_last_path_segment (TYPE_NAME (TYPE_FIELD_TYPE (union_type, | |
10140 | i))); | |
10141 | ||
10142 | auto iter = discriminant_map.find (variant_name); | |
10143 | if (iter != discriminant_map.end ()) | |
10144 | disc->discriminants[i] = iter->second; | |
10145 | ||
bedda9ac | 10146 | /* Remove the discriminant field, if it exists. */ |
c9317f21 | 10147 | struct type *sub_type = TYPE_FIELD_TYPE (union_type, i); |
bedda9ac TT |
10148 | if (TYPE_NFIELDS (sub_type) > 0) |
10149 | { | |
10150 | --TYPE_NFIELDS (sub_type); | |
10151 | ++TYPE_FIELDS (sub_type); | |
10152 | } | |
c9317f21 TT |
10153 | TYPE_FIELD_NAME (union_type, i) = variant_name; |
10154 | TYPE_NAME (sub_type) | |
10155 | = rust_fully_qualify (&objfile->objfile_obstack, | |
10156 | TYPE_NAME (type), variant_name); | |
10157 | } | |
10158 | } | |
10159 | } | |
10160 | ||
10161 | /* Rewrite some Rust unions to be structures with variants parts. */ | |
10162 | ||
10163 | static void | |
10164 | rust_union_quirks (struct dwarf2_cu *cu) | |
10165 | { | |
10166 | gdb_assert (cu->language == language_rust); | |
52941706 SM |
10167 | for (type *type_ : cu->rust_unions) |
10168 | quirk_rust_enum (type_, cu->per_cu->dwarf2_per_objfile->objfile); | |
2d79090e TT |
10169 | /* We don't need this any more. */ |
10170 | cu->rust_unions.clear (); | |
c9317f21 TT |
10171 | } |
10172 | ||
95554aad TT |
10173 | /* Return the symtab for PER_CU. This works properly regardless of |
10174 | whether we're using the index or psymtabs. */ | |
10175 | ||
43f3e411 DE |
10176 | static struct compunit_symtab * |
10177 | get_compunit_symtab (struct dwarf2_per_cu_data *per_cu) | |
95554aad | 10178 | { |
ed2dc618 | 10179 | return (per_cu->dwarf2_per_objfile->using_index |
43f3e411 DE |
10180 | ? per_cu->v.quick->compunit_symtab |
10181 | : per_cu->v.psymtab->compunit_symtab); | |
95554aad TT |
10182 | } |
10183 | ||
10184 | /* A helper function for computing the list of all symbol tables | |
10185 | included by PER_CU. */ | |
10186 | ||
10187 | static void | |
4c39bc03 | 10188 | recursively_compute_inclusions (std::vector<compunit_symtab *> *result, |
ec94af83 | 10189 | htab_t all_children, htab_t all_type_symtabs, |
f9125b6c | 10190 | struct dwarf2_per_cu_data *per_cu, |
43f3e411 | 10191 | struct compunit_symtab *immediate_parent) |
95554aad TT |
10192 | { |
10193 | void **slot; | |
10194 | int ix; | |
43f3e411 | 10195 | struct compunit_symtab *cust; |
95554aad TT |
10196 | struct dwarf2_per_cu_data *iter; |
10197 | ||
10198 | slot = htab_find_slot (all_children, per_cu, INSERT); | |
10199 | if (*slot != NULL) | |
10200 | { | |
10201 | /* This inclusion and its children have been processed. */ | |
10202 | return; | |
10203 | } | |
10204 | ||
10205 | *slot = per_cu; | |
10206 | /* Only add a CU if it has a symbol table. */ | |
43f3e411 DE |
10207 | cust = get_compunit_symtab (per_cu); |
10208 | if (cust != NULL) | |
ec94af83 DE |
10209 | { |
10210 | /* If this is a type unit only add its symbol table if we haven't | |
10211 | seen it yet (type unit per_cu's can share symtabs). */ | |
10212 | if (per_cu->is_debug_types) | |
10213 | { | |
43f3e411 | 10214 | slot = htab_find_slot (all_type_symtabs, cust, INSERT); |
ec94af83 DE |
10215 | if (*slot == NULL) |
10216 | { | |
43f3e411 | 10217 | *slot = cust; |
4c39bc03 | 10218 | result->push_back (cust); |
43f3e411 DE |
10219 | if (cust->user == NULL) |
10220 | cust->user = immediate_parent; | |
ec94af83 DE |
10221 | } |
10222 | } | |
10223 | else | |
f9125b6c | 10224 | { |
4c39bc03 | 10225 | result->push_back (cust); |
43f3e411 DE |
10226 | if (cust->user == NULL) |
10227 | cust->user = immediate_parent; | |
f9125b6c | 10228 | } |
ec94af83 | 10229 | } |
95554aad TT |
10230 | |
10231 | for (ix = 0; | |
796a7ff8 | 10232 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, ix, iter); |
95554aad | 10233 | ++ix) |
ec94af83 DE |
10234 | { |
10235 | recursively_compute_inclusions (result, all_children, | |
43f3e411 | 10236 | all_type_symtabs, iter, cust); |
ec94af83 | 10237 | } |
95554aad TT |
10238 | } |
10239 | ||
43f3e411 | 10240 | /* Compute the compunit_symtab 'includes' fields for the compunit_symtab of |
95554aad TT |
10241 | PER_CU. */ |
10242 | ||
10243 | static void | |
43f3e411 | 10244 | compute_compunit_symtab_includes (struct dwarf2_per_cu_data *per_cu) |
95554aad | 10245 | { |
f4dc4d17 DE |
10246 | gdb_assert (! per_cu->is_debug_types); |
10247 | ||
796a7ff8 | 10248 | if (!VEC_empty (dwarf2_per_cu_ptr, per_cu->imported_symtabs)) |
95554aad TT |
10249 | { |
10250 | int ix, len; | |
ec94af83 | 10251 | struct dwarf2_per_cu_data *per_cu_iter; |
4c39bc03 | 10252 | std::vector<compunit_symtab *> result_symtabs; |
ec94af83 | 10253 | htab_t all_children, all_type_symtabs; |
43f3e411 | 10254 | struct compunit_symtab *cust = get_compunit_symtab (per_cu); |
95554aad TT |
10255 | |
10256 | /* If we don't have a symtab, we can just skip this case. */ | |
43f3e411 | 10257 | if (cust == NULL) |
95554aad TT |
10258 | return; |
10259 | ||
10260 | all_children = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, | |
10261 | NULL, xcalloc, xfree); | |
ec94af83 DE |
10262 | all_type_symtabs = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
10263 | NULL, xcalloc, xfree); | |
95554aad TT |
10264 | |
10265 | for (ix = 0; | |
796a7ff8 | 10266 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, |
ec94af83 | 10267 | ix, per_cu_iter); |
95554aad | 10268 | ++ix) |
ec94af83 DE |
10269 | { |
10270 | recursively_compute_inclusions (&result_symtabs, all_children, | |
f9125b6c | 10271 | all_type_symtabs, per_cu_iter, |
43f3e411 | 10272 | cust); |
ec94af83 | 10273 | } |
95554aad | 10274 | |
ec94af83 | 10275 | /* Now we have a transitive closure of all the included symtabs. */ |
4c39bc03 | 10276 | len = result_symtabs.size (); |
43f3e411 | 10277 | cust->includes |
ed2dc618 | 10278 | = XOBNEWVEC (&per_cu->dwarf2_per_objfile->objfile->objfile_obstack, |
8d749320 | 10279 | struct compunit_symtab *, len + 1); |
4c39bc03 TT |
10280 | memcpy (cust->includes, result_symtabs.data (), |
10281 | len * sizeof (compunit_symtab *)); | |
43f3e411 | 10282 | cust->includes[len] = NULL; |
95554aad | 10283 | |
95554aad | 10284 | htab_delete (all_children); |
ec94af83 | 10285 | htab_delete (all_type_symtabs); |
95554aad TT |
10286 | } |
10287 | } | |
10288 | ||
10289 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
10290 | read. */ | |
10291 | ||
10292 | static void | |
ed2dc618 | 10293 | process_cu_includes (struct dwarf2_per_objfile *dwarf2_per_objfile) |
95554aad | 10294 | { |
71b73764 | 10295 | for (dwarf2_per_cu_data *iter : dwarf2_per_objfile->just_read_cus) |
f4dc4d17 DE |
10296 | { |
10297 | if (! iter->is_debug_types) | |
43f3e411 | 10298 | compute_compunit_symtab_includes (iter); |
f4dc4d17 | 10299 | } |
95554aad | 10300 | |
c5d0225d | 10301 | dwarf2_per_objfile->just_read_cus.clear (); |
95554aad TT |
10302 | } |
10303 | ||
9cdd5dbd | 10304 | /* Generate full symbol information for PER_CU, whose DIEs have |
10b3939b DJ |
10305 | already been loaded into memory. */ |
10306 | ||
10307 | static void | |
95554aad TT |
10308 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu, |
10309 | enum language pretend_language) | |
10b3939b | 10310 | { |
10b3939b | 10311 | struct dwarf2_cu *cu = per_cu->cu; |
ed2dc618 SM |
10312 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
10313 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
3e29f34a | 10314 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
10b3939b | 10315 | CORE_ADDR lowpc, highpc; |
43f3e411 | 10316 | struct compunit_symtab *cust; |
10b3939b | 10317 | CORE_ADDR baseaddr; |
4359dff1 | 10318 | struct block *static_block; |
3e29f34a | 10319 | CORE_ADDR addr; |
10b3939b DJ |
10320 | |
10321 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
10322 | ||
c89b44cd TT |
10323 | /* Clear the list here in case something was left over. */ |
10324 | cu->method_list.clear (); | |
10b3939b | 10325 | |
95554aad TT |
10326 | cu->language = pretend_language; |
10327 | cu->language_defn = language_def (cu->language); | |
10328 | ||
c906108c | 10329 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 10330 | process_die (cu->dies, cu); |
c906108c | 10331 | |
a766d390 DE |
10332 | /* For now fudge the Go package. */ |
10333 | if (cu->language == language_go) | |
10334 | fixup_go_packaging (cu); | |
10335 | ||
3da10d80 KS |
10336 | /* Now that we have processed all the DIEs in the CU, all the types |
10337 | should be complete, and it should now be safe to compute all of the | |
10338 | physnames. */ | |
10339 | compute_delayed_physnames (cu); | |
3da10d80 | 10340 | |
c9317f21 TT |
10341 | if (cu->language == language_rust) |
10342 | rust_union_quirks (cu); | |
10343 | ||
fae299cd DC |
10344 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
10345 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
10346 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 10347 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 10348 | |
3e29f34a | 10349 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); |
804d2729 | 10350 | static_block = cu->builder->end_symtab_get_static_block (addr, 0, 1); |
4359dff1 JK |
10351 | |
10352 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
10353 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
10354 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
10355 | addrmap to help ensure it has an accurate map of pc values belonging to | |
10356 | this comp unit. */ | |
10357 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
10358 | ||
804d2729 TT |
10359 | cust = cu->builder->end_symtab_from_static_block (static_block, |
10360 | SECT_OFF_TEXT (objfile), | |
10361 | 0); | |
c906108c | 10362 | |
43f3e411 | 10363 | if (cust != NULL) |
c906108c | 10364 | { |
df15bd07 | 10365 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 10366 | |
8be455d7 JK |
10367 | /* Set symtab language to language from DW_AT_language. If the |
10368 | compilation is from a C file generated by language preprocessors, do | |
10369 | not set the language if it was already deduced by start_subfile. */ | |
43f3e411 | 10370 | if (!(cu->language == language_c |
40e3ad0e | 10371 | && COMPUNIT_FILETABS (cust)->language != language_unknown)) |
43f3e411 | 10372 | COMPUNIT_FILETABS (cust)->language = cu->language; |
8be455d7 JK |
10373 | |
10374 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
10375 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
10376 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
10377 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
10378 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
10379 | |
10380 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
10381 | needed, it would be wrong due to missing DW_AT_producer there. | |
10382 | ||
10383 | Still one can confuse GDB by using non-standard GCC compilation | |
10384 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
10385 | */ | |
ab260dad | 10386 | if (cu->has_loclist && gcc_4_minor >= 5) |
43f3e411 | 10387 | cust->locations_valid = 1; |
e0d00bc7 JK |
10388 | |
10389 | if (gcc_4_minor >= 5) | |
43f3e411 | 10390 | cust->epilogue_unwind_valid = 1; |
96408a79 | 10391 | |
43f3e411 | 10392 | cust->call_site_htab = cu->call_site_htab; |
c906108c | 10393 | } |
9291a0cd TT |
10394 | |
10395 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 10396 | per_cu->v.quick->compunit_symtab = cust; |
9291a0cd TT |
10397 | else |
10398 | { | |
10399 | struct partial_symtab *pst = per_cu->v.psymtab; | |
43f3e411 | 10400 | pst->compunit_symtab = cust; |
9291a0cd TT |
10401 | pst->readin = 1; |
10402 | } | |
c906108c | 10403 | |
95554aad | 10404 | /* Push it for inclusion processing later. */ |
c5d0225d | 10405 | dwarf2_per_objfile->just_read_cus.push_back (per_cu); |
804d2729 TT |
10406 | |
10407 | /* Not needed any more. */ | |
10408 | cu->builder.reset (); | |
f4dc4d17 | 10409 | } |
45cfd468 | 10410 | |
f4dc4d17 DE |
10411 | /* Generate full symbol information for type unit PER_CU, whose DIEs have |
10412 | already been loaded into memory. */ | |
10413 | ||
10414 | static void | |
10415 | process_full_type_unit (struct dwarf2_per_cu_data *per_cu, | |
10416 | enum language pretend_language) | |
10417 | { | |
10418 | struct dwarf2_cu *cu = per_cu->cu; | |
ed2dc618 SM |
10419 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
10420 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
43f3e411 | 10421 | struct compunit_symtab *cust; |
0186c6a7 DE |
10422 | struct signatured_type *sig_type; |
10423 | ||
10424 | gdb_assert (per_cu->is_debug_types); | |
10425 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 | 10426 | |
c89b44cd TT |
10427 | /* Clear the list here in case something was left over. */ |
10428 | cu->method_list.clear (); | |
f4dc4d17 | 10429 | |
f4dc4d17 DE |
10430 | cu->language = pretend_language; |
10431 | cu->language_defn = language_def (cu->language); | |
10432 | ||
10433 | /* The symbol tables are set up in read_type_unit_scope. */ | |
10434 | process_die (cu->dies, cu); | |
10435 | ||
10436 | /* For now fudge the Go package. */ | |
10437 | if (cu->language == language_go) | |
10438 | fixup_go_packaging (cu); | |
10439 | ||
10440 | /* Now that we have processed all the DIEs in the CU, all the types | |
10441 | should be complete, and it should now be safe to compute all of the | |
10442 | physnames. */ | |
10443 | compute_delayed_physnames (cu); | |
f4dc4d17 | 10444 | |
c9317f21 TT |
10445 | if (cu->language == language_rust) |
10446 | rust_union_quirks (cu); | |
10447 | ||
f4dc4d17 DE |
10448 | /* TUs share symbol tables. |
10449 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
10450 | of it with end_expandable_symtab. Otherwise, complete the addition of |
10451 | this TU's symbols to the existing symtab. */ | |
43f3e411 | 10452 | if (sig_type->type_unit_group->compunit_symtab == NULL) |
45cfd468 | 10453 | { |
804d2729 | 10454 | cust = cu->builder->end_expandable_symtab (0, SECT_OFF_TEXT (objfile)); |
43f3e411 | 10455 | sig_type->type_unit_group->compunit_symtab = cust; |
f4dc4d17 | 10456 | |
43f3e411 | 10457 | if (cust != NULL) |
f4dc4d17 DE |
10458 | { |
10459 | /* Set symtab language to language from DW_AT_language. If the | |
10460 | compilation is from a C file generated by language preprocessors, | |
10461 | do not set the language if it was already deduced by | |
10462 | start_subfile. */ | |
43f3e411 DE |
10463 | if (!(cu->language == language_c |
10464 | && COMPUNIT_FILETABS (cust)->language != language_c)) | |
10465 | COMPUNIT_FILETABS (cust)->language = cu->language; | |
f4dc4d17 DE |
10466 | } |
10467 | } | |
10468 | else | |
10469 | { | |
804d2729 | 10470 | cu->builder->augment_type_symtab (); |
43f3e411 | 10471 | cust = sig_type->type_unit_group->compunit_symtab; |
f4dc4d17 DE |
10472 | } |
10473 | ||
10474 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 10475 | per_cu->v.quick->compunit_symtab = cust; |
f4dc4d17 DE |
10476 | else |
10477 | { | |
10478 | struct partial_symtab *pst = per_cu->v.psymtab; | |
43f3e411 | 10479 | pst->compunit_symtab = cust; |
f4dc4d17 | 10480 | pst->readin = 1; |
45cfd468 | 10481 | } |
804d2729 TT |
10482 | |
10483 | /* Not needed any more. */ | |
10484 | cu->builder.reset (); | |
c906108c SS |
10485 | } |
10486 | ||
95554aad TT |
10487 | /* Process an imported unit DIE. */ |
10488 | ||
10489 | static void | |
10490 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
10491 | { | |
10492 | struct attribute *attr; | |
10493 | ||
f4dc4d17 DE |
10494 | /* For now we don't handle imported units in type units. */ |
10495 | if (cu->per_cu->is_debug_types) | |
10496 | { | |
10497 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
10498 | " supported in type units [in module %s]"), | |
518817b3 | 10499 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
f4dc4d17 DE |
10500 | } |
10501 | ||
95554aad TT |
10502 | attr = dwarf2_attr (die, DW_AT_import, cu); |
10503 | if (attr != NULL) | |
10504 | { | |
9c541725 PA |
10505 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
10506 | bool is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); | |
10507 | dwarf2_per_cu_data *per_cu | |
e3b94546 | 10508 | = dwarf2_find_containing_comp_unit (sect_off, is_dwz, |
518817b3 | 10509 | cu->per_cu->dwarf2_per_objfile); |
95554aad | 10510 | |
69d751e3 | 10511 | /* If necessary, add it to the queue and load its DIEs. */ |
95554aad | 10512 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
58f0c718 | 10513 | load_full_comp_unit (per_cu, false, cu->language); |
95554aad | 10514 | |
796a7ff8 | 10515 | VEC_safe_push (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, |
95554aad TT |
10516 | per_cu); |
10517 | } | |
10518 | } | |
10519 | ||
4c8aa72d PA |
10520 | /* RAII object that represents a process_die scope: i.e., |
10521 | starts/finishes processing a DIE. */ | |
10522 | class process_die_scope | |
adde2bff | 10523 | { |
4c8aa72d PA |
10524 | public: |
10525 | process_die_scope (die_info *die, dwarf2_cu *cu) | |
10526 | : m_die (die), m_cu (cu) | |
10527 | { | |
10528 | /* We should only be processing DIEs not already in process. */ | |
10529 | gdb_assert (!m_die->in_process); | |
10530 | m_die->in_process = true; | |
10531 | } | |
8c3cb9fa | 10532 | |
4c8aa72d PA |
10533 | ~process_die_scope () |
10534 | { | |
10535 | m_die->in_process = false; | |
10536 | ||
10537 | /* If we're done processing the DIE for the CU that owns the line | |
10538 | header, we don't need the line header anymore. */ | |
10539 | if (m_cu->line_header_die_owner == m_die) | |
10540 | { | |
10541 | delete m_cu->line_header; | |
10542 | m_cu->line_header = NULL; | |
10543 | m_cu->line_header_die_owner = NULL; | |
10544 | } | |
10545 | } | |
10546 | ||
10547 | private: | |
10548 | die_info *m_die; | |
10549 | dwarf2_cu *m_cu; | |
10550 | }; | |
adde2bff | 10551 | |
c906108c SS |
10552 | /* Process a die and its children. */ |
10553 | ||
10554 | static void | |
e7c27a73 | 10555 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10556 | { |
4c8aa72d | 10557 | process_die_scope scope (die, cu); |
adde2bff | 10558 | |
c906108c SS |
10559 | switch (die->tag) |
10560 | { | |
10561 | case DW_TAG_padding: | |
10562 | break; | |
10563 | case DW_TAG_compile_unit: | |
95554aad | 10564 | case DW_TAG_partial_unit: |
e7c27a73 | 10565 | read_file_scope (die, cu); |
c906108c | 10566 | break; |
348e048f DE |
10567 | case DW_TAG_type_unit: |
10568 | read_type_unit_scope (die, cu); | |
10569 | break; | |
c906108c | 10570 | case DW_TAG_subprogram: |
c906108c | 10571 | case DW_TAG_inlined_subroutine: |
edb3359d | 10572 | read_func_scope (die, cu); |
c906108c SS |
10573 | break; |
10574 | case DW_TAG_lexical_block: | |
14898363 L |
10575 | case DW_TAG_try_block: |
10576 | case DW_TAG_catch_block: | |
e7c27a73 | 10577 | read_lexical_block_scope (die, cu); |
c906108c | 10578 | break; |
216f72a1 | 10579 | case DW_TAG_call_site: |
96408a79 SA |
10580 | case DW_TAG_GNU_call_site: |
10581 | read_call_site_scope (die, cu); | |
10582 | break; | |
c906108c | 10583 | case DW_TAG_class_type: |
680b30c7 | 10584 | case DW_TAG_interface_type: |
c906108c SS |
10585 | case DW_TAG_structure_type: |
10586 | case DW_TAG_union_type: | |
134d01f1 | 10587 | process_structure_scope (die, cu); |
c906108c SS |
10588 | break; |
10589 | case DW_TAG_enumeration_type: | |
134d01f1 | 10590 | process_enumeration_scope (die, cu); |
c906108c | 10591 | break; |
134d01f1 | 10592 | |
f792889a DJ |
10593 | /* These dies have a type, but processing them does not create |
10594 | a symbol or recurse to process the children. Therefore we can | |
10595 | read them on-demand through read_type_die. */ | |
c906108c | 10596 | case DW_TAG_subroutine_type: |
72019c9c | 10597 | case DW_TAG_set_type: |
c906108c | 10598 | case DW_TAG_array_type: |
c906108c | 10599 | case DW_TAG_pointer_type: |
c906108c | 10600 | case DW_TAG_ptr_to_member_type: |
c906108c | 10601 | case DW_TAG_reference_type: |
4297a3f0 | 10602 | case DW_TAG_rvalue_reference_type: |
c906108c | 10603 | case DW_TAG_string_type: |
c906108c | 10604 | break; |
134d01f1 | 10605 | |
c906108c | 10606 | case DW_TAG_base_type: |
a02abb62 | 10607 | case DW_TAG_subrange_type: |
cb249c71 | 10608 | case DW_TAG_typedef: |
134d01f1 DJ |
10609 | /* Add a typedef symbol for the type definition, if it has a |
10610 | DW_AT_name. */ | |
f792889a | 10611 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 10612 | break; |
c906108c | 10613 | case DW_TAG_common_block: |
e7c27a73 | 10614 | read_common_block (die, cu); |
c906108c SS |
10615 | break; |
10616 | case DW_TAG_common_inclusion: | |
10617 | break; | |
d9fa45fe | 10618 | case DW_TAG_namespace: |
9068261f | 10619 | cu->processing_has_namespace_info = true; |
e7c27a73 | 10620 | read_namespace (die, cu); |
d9fa45fe | 10621 | break; |
5d7cb8df | 10622 | case DW_TAG_module: |
9068261f | 10623 | cu->processing_has_namespace_info = true; |
5d7cb8df JK |
10624 | read_module (die, cu); |
10625 | break; | |
d9fa45fe | 10626 | case DW_TAG_imported_declaration: |
9068261f | 10627 | cu->processing_has_namespace_info = true; |
74921315 KS |
10628 | if (read_namespace_alias (die, cu)) |
10629 | break; | |
86a73007 TT |
10630 | /* The declaration is not a global namespace alias. */ |
10631 | /* Fall through. */ | |
d9fa45fe | 10632 | case DW_TAG_imported_module: |
9068261f | 10633 | cu->processing_has_namespace_info = true; |
27aa8d6a SW |
10634 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
10635 | || cu->language != language_fortran)) | |
b98664d3 | 10636 | complaint (_("Tag '%s' has unexpected children"), |
27aa8d6a SW |
10637 | dwarf_tag_name (die->tag)); |
10638 | read_import_statement (die, cu); | |
d9fa45fe | 10639 | break; |
95554aad TT |
10640 | |
10641 | case DW_TAG_imported_unit: | |
10642 | process_imported_unit_die (die, cu); | |
10643 | break; | |
10644 | ||
71a3c369 TT |
10645 | case DW_TAG_variable: |
10646 | read_variable (die, cu); | |
10647 | break; | |
10648 | ||
c906108c | 10649 | default: |
e7c27a73 | 10650 | new_symbol (die, NULL, cu); |
c906108c SS |
10651 | break; |
10652 | } | |
10653 | } | |
ca69b9e6 DE |
10654 | \f |
10655 | /* DWARF name computation. */ | |
c906108c | 10656 | |
94af9270 KS |
10657 | /* A helper function for dwarf2_compute_name which determines whether DIE |
10658 | needs to have the name of the scope prepended to the name listed in the | |
10659 | die. */ | |
10660 | ||
10661 | static int | |
10662 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
10663 | { | |
1c809c68 TT |
10664 | struct attribute *attr; |
10665 | ||
94af9270 KS |
10666 | switch (die->tag) |
10667 | { | |
10668 | case DW_TAG_namespace: | |
10669 | case DW_TAG_typedef: | |
10670 | case DW_TAG_class_type: | |
10671 | case DW_TAG_interface_type: | |
10672 | case DW_TAG_structure_type: | |
10673 | case DW_TAG_union_type: | |
10674 | case DW_TAG_enumeration_type: | |
10675 | case DW_TAG_enumerator: | |
10676 | case DW_TAG_subprogram: | |
08a76f8a | 10677 | case DW_TAG_inlined_subroutine: |
94af9270 | 10678 | case DW_TAG_member: |
74921315 | 10679 | case DW_TAG_imported_declaration: |
94af9270 KS |
10680 | return 1; |
10681 | ||
10682 | case DW_TAG_variable: | |
c2b0a229 | 10683 | case DW_TAG_constant: |
94af9270 KS |
10684 | /* We only need to prefix "globally" visible variables. These include |
10685 | any variable marked with DW_AT_external or any variable that | |
10686 | lives in a namespace. [Variables in anonymous namespaces | |
10687 | require prefixing, but they are not DW_AT_external.] */ | |
10688 | ||
10689 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
10690 | { | |
10691 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 10692 | |
94af9270 KS |
10693 | return die_needs_namespace (die_specification (die, &spec_cu), |
10694 | spec_cu); | |
10695 | } | |
10696 | ||
1c809c68 | 10697 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
10698 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
10699 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
10700 | return 0; |
10701 | /* A variable in a lexical block of some kind does not need a | |
10702 | namespace, even though in C++ such variables may be external | |
10703 | and have a mangled name. */ | |
10704 | if (die->parent->tag == DW_TAG_lexical_block | |
10705 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
10706 | || die->parent->tag == DW_TAG_catch_block |
10707 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
10708 | return 0; |
10709 | return 1; | |
94af9270 KS |
10710 | |
10711 | default: | |
10712 | return 0; | |
10713 | } | |
10714 | } | |
10715 | ||
73b9be8b KS |
10716 | /* Return the DIE's linkage name attribute, either DW_AT_linkage_name |
10717 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10718 | defined for the given DIE. */ | |
10719 | ||
10720 | static struct attribute * | |
10721 | dw2_linkage_name_attr (struct die_info *die, struct dwarf2_cu *cu) | |
10722 | { | |
10723 | struct attribute *attr; | |
10724 | ||
10725 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
10726 | if (attr == NULL) | |
10727 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10728 | ||
10729 | return attr; | |
10730 | } | |
10731 | ||
10732 | /* Return the DIE's linkage name as a string, either DW_AT_linkage_name | |
10733 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10734 | defined for the given DIE. */ | |
10735 | ||
10736 | static const char * | |
10737 | dw2_linkage_name (struct die_info *die, struct dwarf2_cu *cu) | |
10738 | { | |
10739 | const char *linkage_name; | |
10740 | ||
10741 | linkage_name = dwarf2_string_attr (die, DW_AT_linkage_name, cu); | |
10742 | if (linkage_name == NULL) | |
10743 | linkage_name = dwarf2_string_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10744 | ||
10745 | return linkage_name; | |
10746 | } | |
10747 | ||
94af9270 | 10748 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 | 10749 | compute the physname for the object, which include a method's: |
9c37b5ae | 10750 | - formal parameters (C++), |
a766d390 | 10751 | - receiver type (Go), |
a766d390 DE |
10752 | |
10753 | The term "physname" is a bit confusing. | |
10754 | For C++, for example, it is the demangled name. | |
10755 | For Go, for example, it's the mangled name. | |
94af9270 | 10756 | |
af6b7be1 JB |
10757 | For Ada, return the DIE's linkage name rather than the fully qualified |
10758 | name. PHYSNAME is ignored.. | |
10759 | ||
94af9270 KS |
10760 | The result is allocated on the objfile_obstack and canonicalized. */ |
10761 | ||
10762 | static const char * | |
15d034d0 TT |
10763 | dwarf2_compute_name (const char *name, |
10764 | struct die_info *die, struct dwarf2_cu *cu, | |
94af9270 KS |
10765 | int physname) |
10766 | { | |
518817b3 | 10767 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
bb5ed363 | 10768 | |
94af9270 KS |
10769 | if (name == NULL) |
10770 | name = dwarf2_name (die, cu); | |
10771 | ||
2ee7123e DE |
10772 | /* For Fortran GDB prefers DW_AT_*linkage_name for the physname if present |
10773 | but otherwise compute it by typename_concat inside GDB. | |
10774 | FIXME: Actually this is not really true, or at least not always true. | |
10775 | It's all very confusing. SYMBOL_SET_NAMES doesn't try to demangle | |
5e2db402 | 10776 | Fortran names because there is no mangling standard. So new_symbol |
2ee7123e DE |
10777 | will set the demangled name to the result of dwarf2_full_name, and it is |
10778 | the demangled name that GDB uses if it exists. */ | |
f55ee35c JK |
10779 | if (cu->language == language_ada |
10780 | || (cu->language == language_fortran && physname)) | |
10781 | { | |
10782 | /* For Ada unit, we prefer the linkage name over the name, as | |
10783 | the former contains the exported name, which the user expects | |
10784 | to be able to reference. Ideally, we want the user to be able | |
10785 | to reference this entity using either natural or linkage name, | |
10786 | but we haven't started looking at this enhancement yet. */ | |
73b9be8b | 10787 | const char *linkage_name = dw2_linkage_name (die, cu); |
f55ee35c | 10788 | |
2ee7123e DE |
10789 | if (linkage_name != NULL) |
10790 | return linkage_name; | |
f55ee35c JK |
10791 | } |
10792 | ||
94af9270 KS |
10793 | /* These are the only languages we know how to qualify names in. */ |
10794 | if (name != NULL | |
9c37b5ae | 10795 | && (cu->language == language_cplus |
c44af4eb TT |
10796 | || cu->language == language_fortran || cu->language == language_d |
10797 | || cu->language == language_rust)) | |
94af9270 KS |
10798 | { |
10799 | if (die_needs_namespace (die, cu)) | |
10800 | { | |
0d5cff50 | 10801 | const char *prefix; |
34a68019 | 10802 | const char *canonical_name = NULL; |
94af9270 | 10803 | |
d7e74731 PA |
10804 | string_file buf; |
10805 | ||
94af9270 | 10806 | prefix = determine_prefix (die, cu); |
94af9270 KS |
10807 | if (*prefix != '\0') |
10808 | { | |
f55ee35c JK |
10809 | char *prefixed_name = typename_concat (NULL, prefix, name, |
10810 | physname, cu); | |
9a619af0 | 10811 | |
d7e74731 | 10812 | buf.puts (prefixed_name); |
94af9270 KS |
10813 | xfree (prefixed_name); |
10814 | } | |
10815 | else | |
d7e74731 | 10816 | buf.puts (name); |
94af9270 | 10817 | |
98bfdba5 PA |
10818 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
10819 | as children with DW_TAG_template_type_param or | |
10820 | DW_TAG_value_type_param. If the latter, add them to the name | |
10821 | here. If the name already has template parameters, then | |
10822 | skip this step; some versions of GCC emit both, and | |
10823 | it is more efficient to use the pre-computed name. | |
10824 | ||
10825 | Something to keep in mind about this process: it is very | |
10826 | unlikely, or in some cases downright impossible, to produce | |
10827 | something that will match the mangled name of a function. | |
10828 | If the definition of the function has the same debug info, | |
10829 | we should be able to match up with it anyway. But fallbacks | |
10830 | using the minimal symbol, for instance to find a method | |
10831 | implemented in a stripped copy of libstdc++, will not work. | |
10832 | If we do not have debug info for the definition, we will have to | |
10833 | match them up some other way. | |
10834 | ||
10835 | When we do name matching there is a related problem with function | |
10836 | templates; two instantiated function templates are allowed to | |
10837 | differ only by their return types, which we do not add here. */ | |
10838 | ||
10839 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
10840 | { | |
10841 | struct attribute *attr; | |
10842 | struct die_info *child; | |
10843 | int first = 1; | |
10844 | ||
10845 | die->building_fullname = 1; | |
10846 | ||
10847 | for (child = die->child; child != NULL; child = child->sibling) | |
10848 | { | |
10849 | struct type *type; | |
12df843f | 10850 | LONGEST value; |
d521ce57 | 10851 | const gdb_byte *bytes; |
98bfdba5 PA |
10852 | struct dwarf2_locexpr_baton *baton; |
10853 | struct value *v; | |
10854 | ||
10855 | if (child->tag != DW_TAG_template_type_param | |
10856 | && child->tag != DW_TAG_template_value_param) | |
10857 | continue; | |
10858 | ||
10859 | if (first) | |
10860 | { | |
d7e74731 | 10861 | buf.puts ("<"); |
98bfdba5 PA |
10862 | first = 0; |
10863 | } | |
10864 | else | |
d7e74731 | 10865 | buf.puts (", "); |
98bfdba5 PA |
10866 | |
10867 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
10868 | if (attr == NULL) | |
10869 | { | |
b98664d3 | 10870 | complaint (_("template parameter missing DW_AT_type")); |
d7e74731 | 10871 | buf.puts ("UNKNOWN_TYPE"); |
98bfdba5 PA |
10872 | continue; |
10873 | } | |
10874 | type = die_type (child, cu); | |
10875 | ||
10876 | if (child->tag == DW_TAG_template_type_param) | |
10877 | { | |
c1ec8cea TT |
10878 | c_print_type (type, "", &buf, -1, 0, cu->language, |
10879 | &type_print_raw_options); | |
98bfdba5 PA |
10880 | continue; |
10881 | } | |
10882 | ||
10883 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
10884 | if (attr == NULL) | |
10885 | { | |
b98664d3 | 10886 | complaint (_("template parameter missing " |
3e43a32a | 10887 | "DW_AT_const_value")); |
d7e74731 | 10888 | buf.puts ("UNKNOWN_VALUE"); |
98bfdba5 PA |
10889 | continue; |
10890 | } | |
10891 | ||
10892 | dwarf2_const_value_attr (attr, type, name, | |
10893 | &cu->comp_unit_obstack, cu, | |
10894 | &value, &bytes, &baton); | |
10895 | ||
10896 | if (TYPE_NOSIGN (type)) | |
10897 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
10898 | changed, this can use value_print instead. */ | |
d7e74731 | 10899 | c_printchar (value, type, &buf); |
98bfdba5 PA |
10900 | else |
10901 | { | |
10902 | struct value_print_options opts; | |
10903 | ||
10904 | if (baton != NULL) | |
10905 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
10906 | baton->data, | |
10907 | baton->size, | |
10908 | baton->per_cu); | |
10909 | else if (bytes != NULL) | |
10910 | { | |
10911 | v = allocate_value (type); | |
10912 | memcpy (value_contents_writeable (v), bytes, | |
10913 | TYPE_LENGTH (type)); | |
10914 | } | |
10915 | else | |
10916 | v = value_from_longest (type, value); | |
10917 | ||
3e43a32a MS |
10918 | /* Specify decimal so that we do not depend on |
10919 | the radix. */ | |
98bfdba5 PA |
10920 | get_formatted_print_options (&opts, 'd'); |
10921 | opts.raw = 1; | |
d7e74731 | 10922 | value_print (v, &buf, &opts); |
98bfdba5 | 10923 | release_value (v); |
98bfdba5 PA |
10924 | } |
10925 | } | |
10926 | ||
10927 | die->building_fullname = 0; | |
10928 | ||
10929 | if (!first) | |
10930 | { | |
10931 | /* Close the argument list, with a space if necessary | |
10932 | (nested templates). */ | |
d7e74731 PA |
10933 | if (!buf.empty () && buf.string ().back () == '>') |
10934 | buf.puts (" >"); | |
98bfdba5 | 10935 | else |
d7e74731 | 10936 | buf.puts (">"); |
98bfdba5 PA |
10937 | } |
10938 | } | |
10939 | ||
9c37b5ae | 10940 | /* For C++ methods, append formal parameter type |
94af9270 | 10941 | information, if PHYSNAME. */ |
6e70227d | 10942 | |
94af9270 | 10943 | if (physname && die->tag == DW_TAG_subprogram |
9c37b5ae | 10944 | && cu->language == language_cplus) |
94af9270 KS |
10945 | { |
10946 | struct type *type = read_type_die (die, cu); | |
10947 | ||
d7e74731 | 10948 | c_type_print_args (type, &buf, 1, cu->language, |
79d43c61 | 10949 | &type_print_raw_options); |
94af9270 | 10950 | |
9c37b5ae | 10951 | if (cu->language == language_cplus) |
94af9270 | 10952 | { |
60430eff DJ |
10953 | /* Assume that an artificial first parameter is |
10954 | "this", but do not crash if it is not. RealView | |
10955 | marks unnamed (and thus unused) parameters as | |
10956 | artificial; there is no way to differentiate | |
10957 | the two cases. */ | |
94af9270 KS |
10958 | if (TYPE_NFIELDS (type) > 0 |
10959 | && TYPE_FIELD_ARTIFICIAL (type, 0) | |
60430eff | 10960 | && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_PTR |
3e43a32a MS |
10961 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, |
10962 | 0)))) | |
d7e74731 | 10963 | buf.puts (" const"); |
94af9270 KS |
10964 | } |
10965 | } | |
10966 | ||
d7e74731 | 10967 | const std::string &intermediate_name = buf.string (); |
94af9270 KS |
10968 | |
10969 | if (cu->language == language_cplus) | |
34a68019 | 10970 | canonical_name |
322a8516 | 10971 | = dwarf2_canonicalize_name (intermediate_name.c_str (), cu, |
34a68019 TT |
10972 | &objfile->per_bfd->storage_obstack); |
10973 | ||
10974 | /* If we only computed INTERMEDIATE_NAME, or if | |
10975 | INTERMEDIATE_NAME is already canonical, then we need to | |
10976 | copy it to the appropriate obstack. */ | |
322a8516 | 10977 | if (canonical_name == NULL || canonical_name == intermediate_name.c_str ()) |
224c3ddb SM |
10978 | name = ((const char *) |
10979 | obstack_copy0 (&objfile->per_bfd->storage_obstack, | |
322a8516 PA |
10980 | intermediate_name.c_str (), |
10981 | intermediate_name.length ())); | |
34a68019 TT |
10982 | else |
10983 | name = canonical_name; | |
94af9270 KS |
10984 | } |
10985 | } | |
10986 | ||
10987 | return name; | |
10988 | } | |
10989 | ||
0114d602 DJ |
10990 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
10991 | If scope qualifiers are appropriate they will be added. The result | |
34a68019 | 10992 | will be allocated on the storage_obstack, or NULL if the DIE does |
94af9270 KS |
10993 | not have a name. NAME may either be from a previous call to |
10994 | dwarf2_name or NULL. | |
10995 | ||
9c37b5ae | 10996 | The output string will be canonicalized (if C++). */ |
0114d602 DJ |
10997 | |
10998 | static const char * | |
15d034d0 | 10999 | dwarf2_full_name (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 11000 | { |
94af9270 KS |
11001 | return dwarf2_compute_name (name, die, cu, 0); |
11002 | } | |
0114d602 | 11003 | |
94af9270 KS |
11004 | /* Construct a physname for the given DIE in CU. NAME may either be |
11005 | from a previous call to dwarf2_name or NULL. The result will be | |
11006 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
11007 | name. | |
0114d602 | 11008 | |
9c37b5ae | 11009 | The output string will be canonicalized (if C++). */ |
0114d602 | 11010 | |
94af9270 | 11011 | static const char * |
15d034d0 | 11012 | dwarf2_physname (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
94af9270 | 11013 | { |
518817b3 | 11014 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
900e11f9 | 11015 | const char *retval, *mangled = NULL, *canon = NULL; |
900e11f9 JK |
11016 | int need_copy = 1; |
11017 | ||
11018 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
11019 | on its own. */ | |
11020 | if (!die_needs_namespace (die, cu)) | |
11021 | return dwarf2_compute_name (name, die, cu, 1); | |
11022 | ||
73b9be8b | 11023 | mangled = dw2_linkage_name (die, cu); |
900e11f9 | 11024 | |
e98c9e7c TT |
11025 | /* rustc emits invalid values for DW_AT_linkage_name. Ignore these. |
11026 | See https://github.com/rust-lang/rust/issues/32925. */ | |
11027 | if (cu->language == language_rust && mangled != NULL | |
11028 | && strchr (mangled, '{') != NULL) | |
11029 | mangled = NULL; | |
11030 | ||
900e11f9 JK |
11031 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB |
11032 | has computed. */ | |
791afaa2 | 11033 | gdb::unique_xmalloc_ptr<char> demangled; |
7d45c7c3 | 11034 | if (mangled != NULL) |
900e11f9 | 11035 | { |
900e11f9 | 11036 | |
59cc4834 JB |
11037 | if (language_def (cu->language)->la_store_sym_names_in_linkage_form_p) |
11038 | { | |
11039 | /* Do nothing (do not demangle the symbol name). */ | |
11040 | } | |
11041 | else if (cu->language == language_go) | |
a766d390 | 11042 | { |
5e2db402 TT |
11043 | /* This is a lie, but we already lie to the caller new_symbol. |
11044 | new_symbol assumes we return the mangled name. | |
a766d390 | 11045 | This just undoes that lie until things are cleaned up. */ |
a766d390 DE |
11046 | } |
11047 | else | |
11048 | { | |
0eb876f5 JB |
11049 | /* Use DMGL_RET_DROP for C++ template functions to suppress |
11050 | their return type. It is easier for GDB users to search | |
11051 | for such functions as `name(params)' than `long name(params)'. | |
11052 | In such case the minimal symbol names do not match the full | |
11053 | symbol names but for template functions there is never a need | |
11054 | to look up their definition from their declaration so | |
11055 | the only disadvantage remains the minimal symbol variant | |
11056 | `long name(params)' does not have the proper inferior type. */ | |
791afaa2 TT |
11057 | demangled.reset (gdb_demangle (mangled, |
11058 | (DMGL_PARAMS | DMGL_ANSI | |
11059 | | DMGL_RET_DROP))); | |
a766d390 | 11060 | } |
900e11f9 | 11061 | if (demangled) |
791afaa2 | 11062 | canon = demangled.get (); |
900e11f9 JK |
11063 | else |
11064 | { | |
11065 | canon = mangled; | |
11066 | need_copy = 0; | |
11067 | } | |
11068 | } | |
11069 | ||
11070 | if (canon == NULL || check_physname) | |
11071 | { | |
11072 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
11073 | ||
11074 | if (canon != NULL && strcmp (physname, canon) != 0) | |
11075 | { | |
11076 | /* It may not mean a bug in GDB. The compiler could also | |
11077 | compute DW_AT_linkage_name incorrectly. But in such case | |
11078 | GDB would need to be bug-to-bug compatible. */ | |
11079 | ||
b98664d3 | 11080 | complaint (_("Computed physname <%s> does not match demangled <%s> " |
9d8780f0 SM |
11081 | "(from linkage <%s>) - DIE at %s [in module %s]"), |
11082 | physname, canon, mangled, sect_offset_str (die->sect_off), | |
4262abfb | 11083 | objfile_name (objfile)); |
900e11f9 JK |
11084 | |
11085 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
11086 | is available here - over computed PHYSNAME. It is safer | |
11087 | against both buggy GDB and buggy compilers. */ | |
11088 | ||
11089 | retval = canon; | |
11090 | } | |
11091 | else | |
11092 | { | |
11093 | retval = physname; | |
11094 | need_copy = 0; | |
11095 | } | |
11096 | } | |
11097 | else | |
11098 | retval = canon; | |
11099 | ||
11100 | if (need_copy) | |
224c3ddb SM |
11101 | retval = ((const char *) |
11102 | obstack_copy0 (&objfile->per_bfd->storage_obstack, | |
11103 | retval, strlen (retval))); | |
900e11f9 | 11104 | |
900e11f9 | 11105 | return retval; |
0114d602 DJ |
11106 | } |
11107 | ||
74921315 KS |
11108 | /* Inspect DIE in CU for a namespace alias. If one exists, record |
11109 | a new symbol for it. | |
11110 | ||
11111 | Returns 1 if a namespace alias was recorded, 0 otherwise. */ | |
11112 | ||
11113 | static int | |
11114 | read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu) | |
11115 | { | |
11116 | struct attribute *attr; | |
11117 | ||
11118 | /* If the die does not have a name, this is not a namespace | |
11119 | alias. */ | |
11120 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
11121 | if (attr != NULL) | |
11122 | { | |
11123 | int num; | |
11124 | struct die_info *d = die; | |
11125 | struct dwarf2_cu *imported_cu = cu; | |
11126 | ||
11127 | /* If the compiler has nested DW_AT_imported_declaration DIEs, | |
11128 | keep inspecting DIEs until we hit the underlying import. */ | |
11129 | #define MAX_NESTED_IMPORTED_DECLARATIONS 100 | |
11130 | for (num = 0; num < MAX_NESTED_IMPORTED_DECLARATIONS; ++num) | |
11131 | { | |
11132 | attr = dwarf2_attr (d, DW_AT_import, cu); | |
11133 | if (attr == NULL) | |
11134 | break; | |
11135 | ||
11136 | d = follow_die_ref (d, attr, &imported_cu); | |
11137 | if (d->tag != DW_TAG_imported_declaration) | |
11138 | break; | |
11139 | } | |
11140 | ||
11141 | if (num == MAX_NESTED_IMPORTED_DECLARATIONS) | |
11142 | { | |
b98664d3 | 11143 | complaint (_("DIE at %s has too many recursively imported " |
9d8780f0 | 11144 | "declarations"), sect_offset_str (d->sect_off)); |
74921315 KS |
11145 | return 0; |
11146 | } | |
11147 | ||
11148 | if (attr != NULL) | |
11149 | { | |
11150 | struct type *type; | |
9c541725 | 11151 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
74921315 | 11152 | |
9c541725 | 11153 | type = get_die_type_at_offset (sect_off, cu->per_cu); |
74921315 KS |
11154 | if (type != NULL && TYPE_CODE (type) == TYPE_CODE_NAMESPACE) |
11155 | { | |
11156 | /* This declaration is a global namespace alias. Add | |
11157 | a symbol for it whose type is the aliased namespace. */ | |
11158 | new_symbol (die, type, cu); | |
11159 | return 1; | |
11160 | } | |
11161 | } | |
11162 | } | |
11163 | ||
11164 | return 0; | |
11165 | } | |
11166 | ||
22cee43f | 11167 | /* Return the using directives repository (global or local?) to use in the |
804d2729 | 11168 | current context for CU. |
22cee43f PMR |
11169 | |
11170 | For Ada, imported declarations can materialize renamings, which *may* be | |
11171 | global. However it is impossible (for now?) in DWARF to distinguish | |
11172 | "external" imported declarations and "static" ones. As all imported | |
11173 | declarations seem to be static in all other languages, make them all CU-wide | |
11174 | global only in Ada. */ | |
11175 | ||
11176 | static struct using_direct ** | |
804d2729 | 11177 | using_directives (struct dwarf2_cu *cu) |
22cee43f | 11178 | { |
804d2729 TT |
11179 | if (cu->language == language_ada && cu->builder->outermost_context_p ()) |
11180 | return cu->builder->get_global_using_directives (); | |
22cee43f | 11181 | else |
804d2729 | 11182 | return cu->builder->get_local_using_directives (); |
22cee43f PMR |
11183 | } |
11184 | ||
27aa8d6a SW |
11185 | /* Read the import statement specified by the given die and record it. */ |
11186 | ||
11187 | static void | |
11188 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
11189 | { | |
518817b3 | 11190 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
27aa8d6a | 11191 | struct attribute *import_attr; |
32019081 | 11192 | struct die_info *imported_die, *child_die; |
de4affc9 | 11193 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 11194 | const char *imported_name; |
794684b6 | 11195 | const char *imported_name_prefix; |
13387711 SW |
11196 | const char *canonical_name; |
11197 | const char *import_alias; | |
11198 | const char *imported_declaration = NULL; | |
794684b6 | 11199 | const char *import_prefix; |
eb1e02fd | 11200 | std::vector<const char *> excludes; |
13387711 | 11201 | |
27aa8d6a SW |
11202 | import_attr = dwarf2_attr (die, DW_AT_import, cu); |
11203 | if (import_attr == NULL) | |
11204 | { | |
b98664d3 | 11205 | complaint (_("Tag '%s' has no DW_AT_import"), |
27aa8d6a SW |
11206 | dwarf_tag_name (die->tag)); |
11207 | return; | |
11208 | } | |
11209 | ||
de4affc9 CC |
11210 | imported_cu = cu; |
11211 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
11212 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
11213 | if (imported_name == NULL) |
11214 | { | |
11215 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
11216 | ||
11217 | The import in the following code: | |
11218 | namespace A | |
11219 | { | |
11220 | typedef int B; | |
11221 | } | |
11222 | ||
11223 | int main () | |
11224 | { | |
11225 | using A::B; | |
11226 | B b; | |
11227 | return b; | |
11228 | } | |
11229 | ||
11230 | ... | |
11231 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
11232 | <52> DW_AT_decl_file : 1 | |
11233 | <53> DW_AT_decl_line : 6 | |
11234 | <54> DW_AT_import : <0x75> | |
11235 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
11236 | <59> DW_AT_name : B | |
11237 | <5b> DW_AT_decl_file : 1 | |
11238 | <5c> DW_AT_decl_line : 2 | |
11239 | <5d> DW_AT_type : <0x6e> | |
11240 | ... | |
11241 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
11242 | <76> DW_AT_byte_size : 4 | |
11243 | <77> DW_AT_encoding : 5 (signed) | |
11244 | ||
11245 | imports the wrong die ( 0x75 instead of 0x58 ). | |
11246 | This case will be ignored until the gcc bug is fixed. */ | |
11247 | return; | |
11248 | } | |
11249 | ||
82856980 SW |
11250 | /* Figure out the local name after import. */ |
11251 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 11252 | |
794684b6 SW |
11253 | /* Figure out where the statement is being imported to. */ |
11254 | import_prefix = determine_prefix (die, cu); | |
11255 | ||
11256 | /* Figure out what the scope of the imported die is and prepend it | |
11257 | to the name of the imported die. */ | |
de4affc9 | 11258 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 11259 | |
f55ee35c JK |
11260 | if (imported_die->tag != DW_TAG_namespace |
11261 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 11262 | { |
13387711 SW |
11263 | imported_declaration = imported_name; |
11264 | canonical_name = imported_name_prefix; | |
794684b6 | 11265 | } |
13387711 | 11266 | else if (strlen (imported_name_prefix) > 0) |
12aaed36 | 11267 | canonical_name = obconcat (&objfile->objfile_obstack, |
45280282 IB |
11268 | imported_name_prefix, |
11269 | (cu->language == language_d ? "." : "::"), | |
11270 | imported_name, (char *) NULL); | |
13387711 SW |
11271 | else |
11272 | canonical_name = imported_name; | |
794684b6 | 11273 | |
32019081 JK |
11274 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) |
11275 | for (child_die = die->child; child_die && child_die->tag; | |
11276 | child_die = sibling_die (child_die)) | |
11277 | { | |
11278 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
11279 | represented by an imported module entry with an import attribute | |
11280 | referring to the module and owned entries corresponding to those | |
11281 | entities that are renamed as part of being imported. */ | |
11282 | ||
11283 | if (child_die->tag != DW_TAG_imported_declaration) | |
11284 | { | |
b98664d3 | 11285 | complaint (_("child DW_TAG_imported_declaration expected " |
9d8780f0 SM |
11286 | "- DIE at %s [in module %s]"), |
11287 | sect_offset_str (child_die->sect_off), | |
11288 | objfile_name (objfile)); | |
32019081 JK |
11289 | continue; |
11290 | } | |
11291 | ||
11292 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
11293 | if (import_attr == NULL) | |
11294 | { | |
b98664d3 | 11295 | complaint (_("Tag '%s' has no DW_AT_import"), |
32019081 JK |
11296 | dwarf_tag_name (child_die->tag)); |
11297 | continue; | |
11298 | } | |
11299 | ||
11300 | imported_cu = cu; | |
11301 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
11302 | &imported_cu); | |
11303 | imported_name = dwarf2_name (imported_die, imported_cu); | |
11304 | if (imported_name == NULL) | |
11305 | { | |
b98664d3 | 11306 | complaint (_("child DW_TAG_imported_declaration has unknown " |
9d8780f0 SM |
11307 | "imported name - DIE at %s [in module %s]"), |
11308 | sect_offset_str (child_die->sect_off), | |
11309 | objfile_name (objfile)); | |
32019081 JK |
11310 | continue; |
11311 | } | |
11312 | ||
eb1e02fd | 11313 | excludes.push_back (imported_name); |
32019081 JK |
11314 | |
11315 | process_die (child_die, cu); | |
11316 | } | |
11317 | ||
804d2729 | 11318 | add_using_directive (using_directives (cu), |
22cee43f PMR |
11319 | import_prefix, |
11320 | canonical_name, | |
11321 | import_alias, | |
11322 | imported_declaration, | |
11323 | excludes, | |
11324 | 0, | |
11325 | &objfile->objfile_obstack); | |
27aa8d6a SW |
11326 | } |
11327 | ||
5230b05a WT |
11328 | /* ICC<14 does not output the required DW_AT_declaration on incomplete |
11329 | types, but gives them a size of zero. Starting with version 14, | |
11330 | ICC is compatible with GCC. */ | |
11331 | ||
9068261f | 11332 | static bool |
5230b05a WT |
11333 | producer_is_icc_lt_14 (struct dwarf2_cu *cu) |
11334 | { | |
11335 | if (!cu->checked_producer) | |
11336 | check_producer (cu); | |
11337 | ||
11338 | return cu->producer_is_icc_lt_14; | |
11339 | } | |
11340 | ||
eb77c9df AB |
11341 | /* ICC generates a DW_AT_type for C void functions. This was observed on |
11342 | ICC 14.0.5.212, and appears to be against the DWARF spec (V5 3.3.2) | |
11343 | which says that void functions should not have a DW_AT_type. */ | |
11344 | ||
11345 | static bool | |
11346 | producer_is_icc (struct dwarf2_cu *cu) | |
11347 | { | |
11348 | if (!cu->checked_producer) | |
11349 | check_producer (cu); | |
11350 | ||
11351 | return cu->producer_is_icc; | |
11352 | } | |
11353 | ||
1b80a9fa JK |
11354 | /* Check for possibly missing DW_AT_comp_dir with relative .debug_line |
11355 | directory paths. GCC SVN r127613 (new option -fdebug-prefix-map) fixed | |
11356 | this, it was first present in GCC release 4.3.0. */ | |
11357 | ||
9068261f | 11358 | static bool |
1b80a9fa JK |
11359 | producer_is_gcc_lt_4_3 (struct dwarf2_cu *cu) |
11360 | { | |
11361 | if (!cu->checked_producer) | |
11362 | check_producer (cu); | |
11363 | ||
11364 | return cu->producer_is_gcc_lt_4_3; | |
11365 | } | |
11366 | ||
d721ba37 PA |
11367 | static file_and_directory |
11368 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu) | |
9291a0cd | 11369 | { |
d721ba37 PA |
11370 | file_and_directory res; |
11371 | ||
9291a0cd TT |
11372 | /* Find the filename. Do not use dwarf2_name here, since the filename |
11373 | is not a source language identifier. */ | |
d721ba37 PA |
11374 | res.name = dwarf2_string_attr (die, DW_AT_name, cu); |
11375 | res.comp_dir = dwarf2_string_attr (die, DW_AT_comp_dir, cu); | |
9291a0cd | 11376 | |
d721ba37 PA |
11377 | if (res.comp_dir == NULL |
11378 | && producer_is_gcc_lt_4_3 (cu) && res.name != NULL | |
11379 | && IS_ABSOLUTE_PATH (res.name)) | |
9291a0cd | 11380 | { |
d721ba37 PA |
11381 | res.comp_dir_storage = ldirname (res.name); |
11382 | if (!res.comp_dir_storage.empty ()) | |
11383 | res.comp_dir = res.comp_dir_storage.c_str (); | |
9291a0cd | 11384 | } |
d721ba37 | 11385 | if (res.comp_dir != NULL) |
9291a0cd TT |
11386 | { |
11387 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
11388 | directory, get rid of it. */ | |
d721ba37 | 11389 | const char *cp = strchr (res.comp_dir, ':'); |
9291a0cd | 11390 | |
d721ba37 PA |
11391 | if (cp && cp != res.comp_dir && cp[-1] == '.' && cp[1] == '/') |
11392 | res.comp_dir = cp + 1; | |
9291a0cd TT |
11393 | } |
11394 | ||
d721ba37 PA |
11395 | if (res.name == NULL) |
11396 | res.name = "<unknown>"; | |
11397 | ||
11398 | return res; | |
9291a0cd TT |
11399 | } |
11400 | ||
f4dc4d17 DE |
11401 | /* Handle DW_AT_stmt_list for a compilation unit. |
11402 | DIE is the DW_TAG_compile_unit die for CU. | |
c3b7b696 YQ |
11403 | COMP_DIR is the compilation directory. LOWPC is passed to |
11404 | dwarf_decode_lines. See dwarf_decode_lines comments about it. */ | |
2ab95328 TT |
11405 | |
11406 | static void | |
11407 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
c3b7b696 | 11408 | const char *comp_dir, CORE_ADDR lowpc) /* ARI: editCase function */ |
2ab95328 | 11409 | { |
518817b3 SM |
11410 | struct dwarf2_per_objfile *dwarf2_per_objfile |
11411 | = cu->per_cu->dwarf2_per_objfile; | |
527f3840 | 11412 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
2ab95328 | 11413 | struct attribute *attr; |
527f3840 JK |
11414 | struct line_header line_header_local; |
11415 | hashval_t line_header_local_hash; | |
527f3840 JK |
11416 | void **slot; |
11417 | int decode_mapping; | |
2ab95328 | 11418 | |
f4dc4d17 DE |
11419 | gdb_assert (! cu->per_cu->is_debug_types); |
11420 | ||
2ab95328 | 11421 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
527f3840 JK |
11422 | if (attr == NULL) |
11423 | return; | |
11424 | ||
9c541725 | 11425 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
527f3840 JK |
11426 | |
11427 | /* The line header hash table is only created if needed (it exists to | |
11428 | prevent redundant reading of the line table for partial_units). | |
11429 | If we're given a partial_unit, we'll need it. If we're given a | |
11430 | compile_unit, then use the line header hash table if it's already | |
11431 | created, but don't create one just yet. */ | |
11432 | ||
11433 | if (dwarf2_per_objfile->line_header_hash == NULL | |
11434 | && die->tag == DW_TAG_partial_unit) | |
2ab95328 | 11435 | { |
527f3840 JK |
11436 | dwarf2_per_objfile->line_header_hash |
11437 | = htab_create_alloc_ex (127, line_header_hash_voidp, | |
11438 | line_header_eq_voidp, | |
11439 | free_line_header_voidp, | |
11440 | &objfile->objfile_obstack, | |
11441 | hashtab_obstack_allocate, | |
11442 | dummy_obstack_deallocate); | |
11443 | } | |
2ab95328 | 11444 | |
9c541725 | 11445 | line_header_local.sect_off = line_offset; |
527f3840 JK |
11446 | line_header_local.offset_in_dwz = cu->per_cu->is_dwz; |
11447 | line_header_local_hash = line_header_hash (&line_header_local); | |
11448 | if (dwarf2_per_objfile->line_header_hash != NULL) | |
11449 | { | |
11450 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash, | |
11451 | &line_header_local, | |
11452 | line_header_local_hash, NO_INSERT); | |
11453 | ||
11454 | /* For DW_TAG_compile_unit we need info like symtab::linetable which | |
11455 | is not present in *SLOT (since if there is something in *SLOT then | |
11456 | it will be for a partial_unit). */ | |
11457 | if (die->tag == DW_TAG_partial_unit && slot != NULL) | |
dee91e82 | 11458 | { |
527f3840 | 11459 | gdb_assert (*slot != NULL); |
9a3c8263 | 11460 | cu->line_header = (struct line_header *) *slot; |
527f3840 | 11461 | return; |
dee91e82 | 11462 | } |
2ab95328 | 11463 | } |
527f3840 JK |
11464 | |
11465 | /* dwarf_decode_line_header does not yet provide sufficient information. | |
11466 | We always have to call also dwarf_decode_lines for it. */ | |
fff8551c PA |
11467 | line_header_up lh = dwarf_decode_line_header (line_offset, cu); |
11468 | if (lh == NULL) | |
527f3840 | 11469 | return; |
4c8aa72d PA |
11470 | |
11471 | cu->line_header = lh.release (); | |
11472 | cu->line_header_die_owner = die; | |
527f3840 JK |
11473 | |
11474 | if (dwarf2_per_objfile->line_header_hash == NULL) | |
11475 | slot = NULL; | |
11476 | else | |
11477 | { | |
11478 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash, | |
11479 | &line_header_local, | |
11480 | line_header_local_hash, INSERT); | |
11481 | gdb_assert (slot != NULL); | |
11482 | } | |
11483 | if (slot != NULL && *slot == NULL) | |
11484 | { | |
11485 | /* This newly decoded line number information unit will be owned | |
11486 | by line_header_hash hash table. */ | |
11487 | *slot = cu->line_header; | |
4c8aa72d | 11488 | cu->line_header_die_owner = NULL; |
527f3840 JK |
11489 | } |
11490 | else | |
11491 | { | |
11492 | /* We cannot free any current entry in (*slot) as that struct line_header | |
11493 | may be already used by multiple CUs. Create only temporary decoded | |
11494 | line_header for this CU - it may happen at most once for each line | |
11495 | number information unit. And if we're not using line_header_hash | |
11496 | then this is what we want as well. */ | |
11497 | gdb_assert (die->tag != DW_TAG_partial_unit); | |
527f3840 JK |
11498 | } |
11499 | decode_mapping = (die->tag != DW_TAG_partial_unit); | |
11500 | dwarf_decode_lines (cu->line_header, comp_dir, cu, NULL, lowpc, | |
11501 | decode_mapping); | |
fff8551c | 11502 | |
2ab95328 TT |
11503 | } |
11504 | ||
95554aad | 11505 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 11506 | |
c906108c | 11507 | static void |
e7c27a73 | 11508 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11509 | { |
518817b3 SM |
11510 | struct dwarf2_per_objfile *dwarf2_per_objfile |
11511 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 11512 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 11513 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
2acceee2 | 11514 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
11515 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
11516 | struct attribute *attr; | |
c906108c | 11517 | struct die_info *child_die; |
e142c38c | 11518 | CORE_ADDR baseaddr; |
6e70227d | 11519 | |
380618d6 | 11520 | prepare_one_comp_unit (cu, die, cu->language); |
e142c38c | 11521 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c | 11522 | |
fae299cd | 11523 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
11524 | |
11525 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
11526 | from finish_block. */ | |
2acceee2 | 11527 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c | 11528 | lowpc = highpc; |
3e29f34a | 11529 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
c906108c | 11530 | |
d721ba37 | 11531 | file_and_directory fnd = find_file_and_directory (die, cu); |
e1024ff1 | 11532 | |
f4b8a18d KW |
11533 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
11534 | standardised yet. As a workaround for the language detection we fall | |
11535 | back to the DW_AT_producer string. */ | |
11536 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
11537 | cu->language = language_opencl; | |
11538 | ||
3019eac3 DE |
11539 | /* Similar hack for Go. */ |
11540 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
11541 | set_cu_language (DW_LANG_Go, cu); | |
11542 | ||
d721ba37 | 11543 | dwarf2_start_symtab (cu, fnd.name, fnd.comp_dir, lowpc); |
3019eac3 DE |
11544 | |
11545 | /* Decode line number information if present. We do this before | |
11546 | processing child DIEs, so that the line header table is available | |
11547 | for DW_AT_decl_file. */ | |
d721ba37 | 11548 | handle_DW_AT_stmt_list (die, cu, fnd.comp_dir, lowpc); |
3019eac3 DE |
11549 | |
11550 | /* Process all dies in compilation unit. */ | |
11551 | if (die->child != NULL) | |
11552 | { | |
11553 | child_die = die->child; | |
11554 | while (child_die && child_die->tag) | |
11555 | { | |
11556 | process_die (child_die, cu); | |
11557 | child_die = sibling_die (child_die); | |
11558 | } | |
11559 | } | |
11560 | ||
11561 | /* Decode macro information, if present. Dwarf 2 macro information | |
11562 | refers to information in the line number info statement program | |
11563 | header, so we can only read it if we've read the header | |
11564 | successfully. */ | |
0af92d60 JK |
11565 | attr = dwarf2_attr (die, DW_AT_macros, cu); |
11566 | if (attr == NULL) | |
11567 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
3019eac3 DE |
11568 | if (attr && cu->line_header) |
11569 | { | |
11570 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
b98664d3 | 11571 | complaint (_("CU refers to both DW_AT_macros and DW_AT_macro_info")); |
3019eac3 | 11572 | |
43f3e411 | 11573 | dwarf_decode_macros (cu, DW_UNSND (attr), 1); |
3019eac3 DE |
11574 | } |
11575 | else | |
11576 | { | |
11577 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
11578 | if (attr && cu->line_header) | |
11579 | { | |
11580 | unsigned int macro_offset = DW_UNSND (attr); | |
11581 | ||
43f3e411 | 11582 | dwarf_decode_macros (cu, macro_offset, 0); |
3019eac3 DE |
11583 | } |
11584 | } | |
3019eac3 DE |
11585 | } |
11586 | ||
f4dc4d17 DE |
11587 | /* TU version of handle_DW_AT_stmt_list for read_type_unit_scope. |
11588 | Create the set of symtabs used by this TU, or if this TU is sharing | |
11589 | symtabs with another TU and the symtabs have already been created | |
11590 | then restore those symtabs in the line header. | |
11591 | We don't need the pc/line-number mapping for type units. */ | |
3019eac3 DE |
11592 | |
11593 | static void | |
f4dc4d17 | 11594 | setup_type_unit_groups (struct die_info *die, struct dwarf2_cu *cu) |
3019eac3 | 11595 | { |
f4dc4d17 DE |
11596 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
11597 | struct type_unit_group *tu_group; | |
11598 | int first_time; | |
3019eac3 | 11599 | struct attribute *attr; |
9c541725 | 11600 | unsigned int i; |
0186c6a7 | 11601 | struct signatured_type *sig_type; |
3019eac3 | 11602 | |
f4dc4d17 | 11603 | gdb_assert (per_cu->is_debug_types); |
0186c6a7 | 11604 | sig_type = (struct signatured_type *) per_cu; |
3019eac3 | 11605 | |
f4dc4d17 | 11606 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
3019eac3 | 11607 | |
f4dc4d17 | 11608 | /* If we're using .gdb_index (includes -readnow) then |
74e04d1c | 11609 | per_cu->type_unit_group may not have been set up yet. */ |
0186c6a7 DE |
11610 | if (sig_type->type_unit_group == NULL) |
11611 | sig_type->type_unit_group = get_type_unit_group (cu, attr); | |
11612 | tu_group = sig_type->type_unit_group; | |
f4dc4d17 DE |
11613 | |
11614 | /* If we've already processed this stmt_list there's no real need to | |
11615 | do it again, we could fake it and just recreate the part we need | |
11616 | (file name,index -> symtab mapping). If data shows this optimization | |
11617 | is useful we can do it then. */ | |
43f3e411 | 11618 | first_time = tu_group->compunit_symtab == NULL; |
f4dc4d17 DE |
11619 | |
11620 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
11621 | debug info. */ | |
fff8551c | 11622 | line_header_up lh; |
f4dc4d17 | 11623 | if (attr != NULL) |
3019eac3 | 11624 | { |
9c541725 | 11625 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
f4dc4d17 DE |
11626 | lh = dwarf_decode_line_header (line_offset, cu); |
11627 | } | |
11628 | if (lh == NULL) | |
11629 | { | |
11630 | if (first_time) | |
11631 | dwarf2_start_symtab (cu, "", NULL, 0); | |
11632 | else | |
11633 | { | |
11634 | gdb_assert (tu_group->symtabs == NULL); | |
804d2729 TT |
11635 | gdb_assert (cu->builder == nullptr); |
11636 | struct compunit_symtab *cust = tu_group->compunit_symtab; | |
11637 | cu->builder.reset (new struct buildsym_compunit | |
11638 | (COMPUNIT_OBJFILE (cust), "", | |
11639 | COMPUNIT_DIRNAME (cust), | |
11640 | compunit_language (cust), | |
11641 | 0, cust)); | |
f4dc4d17 | 11642 | } |
f4dc4d17 | 11643 | return; |
3019eac3 DE |
11644 | } |
11645 | ||
4c8aa72d PA |
11646 | cu->line_header = lh.release (); |
11647 | cu->line_header_die_owner = die; | |
3019eac3 | 11648 | |
f4dc4d17 DE |
11649 | if (first_time) |
11650 | { | |
43f3e411 | 11651 | struct compunit_symtab *cust = dwarf2_start_symtab (cu, "", NULL, 0); |
3019eac3 | 11652 | |
1fd60fc0 DE |
11653 | /* Note: We don't assign tu_group->compunit_symtab yet because we're |
11654 | still initializing it, and our caller (a few levels up) | |
11655 | process_full_type_unit still needs to know if this is the first | |
11656 | time. */ | |
11657 | ||
4c8aa72d PA |
11658 | tu_group->num_symtabs = cu->line_header->file_names.size (); |
11659 | tu_group->symtabs = XNEWVEC (struct symtab *, | |
11660 | cu->line_header->file_names.size ()); | |
3019eac3 | 11661 | |
4c8aa72d | 11662 | for (i = 0; i < cu->line_header->file_names.size (); ++i) |
f4dc4d17 | 11663 | { |
4c8aa72d | 11664 | file_entry &fe = cu->line_header->file_names[i]; |
3019eac3 | 11665 | |
804d2729 | 11666 | dwarf2_start_subfile (cu, fe.name, fe.include_dir (cu->line_header)); |
3019eac3 | 11667 | |
804d2729 | 11668 | if (cu->builder->get_current_subfile ()->symtab == NULL) |
f4dc4d17 | 11669 | { |
4c8aa72d PA |
11670 | /* NOTE: start_subfile will recognize when it's been |
11671 | passed a file it has already seen. So we can't | |
11672 | assume there's a simple mapping from | |
11673 | cu->line_header->file_names to subfiles, plus | |
11674 | cu->line_header->file_names may contain dups. */ | |
804d2729 TT |
11675 | cu->builder->get_current_subfile ()->symtab |
11676 | = allocate_symtab (cust, | |
11677 | cu->builder->get_current_subfile ()->name); | |
f4dc4d17 DE |
11678 | } |
11679 | ||
804d2729 | 11680 | fe.symtab = cu->builder->get_current_subfile ()->symtab; |
8c43009f | 11681 | tu_group->symtabs[i] = fe.symtab; |
f4dc4d17 DE |
11682 | } |
11683 | } | |
11684 | else | |
3019eac3 | 11685 | { |
804d2729 TT |
11686 | gdb_assert (cu->builder == nullptr); |
11687 | struct compunit_symtab *cust = tu_group->compunit_symtab; | |
11688 | cu->builder.reset (new struct buildsym_compunit | |
11689 | (COMPUNIT_OBJFILE (cust), "", | |
11690 | COMPUNIT_DIRNAME (cust), | |
11691 | compunit_language (cust), | |
11692 | 0, cust)); | |
f4dc4d17 | 11693 | |
4c8aa72d | 11694 | for (i = 0; i < cu->line_header->file_names.size (); ++i) |
f4dc4d17 | 11695 | { |
4c8aa72d | 11696 | file_entry &fe = cu->line_header->file_names[i]; |
f4dc4d17 | 11697 | |
4c8aa72d | 11698 | fe.symtab = tu_group->symtabs[i]; |
f4dc4d17 | 11699 | } |
3019eac3 DE |
11700 | } |
11701 | ||
f4dc4d17 DE |
11702 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
11703 | so they don't have a "real" (so to speak) symtab anyway. | |
11704 | There is later code that will assign the main symtab to all symbols | |
11705 | that don't have one. We need to handle the case of a symbol with a | |
11706 | missing symtab (DW_AT_decl_file) anyway. */ | |
11707 | } | |
3019eac3 | 11708 | |
f4dc4d17 DE |
11709 | /* Process DW_TAG_type_unit. |
11710 | For TUs we want to skip the first top level sibling if it's not the | |
11711 | actual type being defined by this TU. In this case the first top | |
11712 | level sibling is there to provide context only. */ | |
3019eac3 | 11713 | |
f4dc4d17 DE |
11714 | static void |
11715 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
11716 | { | |
11717 | struct die_info *child_die; | |
3019eac3 | 11718 | |
f4dc4d17 DE |
11719 | prepare_one_comp_unit (cu, die, language_minimal); |
11720 | ||
11721 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
11722 | We do this before processing child DIEs, so that the line header table | |
11723 | is available for DW_AT_decl_file. */ | |
11724 | setup_type_unit_groups (die, cu); | |
11725 | ||
11726 | if (die->child != NULL) | |
11727 | { | |
11728 | child_die = die->child; | |
11729 | while (child_die && child_die->tag) | |
11730 | { | |
11731 | process_die (child_die, cu); | |
11732 | child_die = sibling_die (child_die); | |
11733 | } | |
11734 | } | |
3019eac3 DE |
11735 | } |
11736 | \f | |
80626a55 DE |
11737 | /* DWO/DWP files. |
11738 | ||
11739 | http://gcc.gnu.org/wiki/DebugFission | |
11740 | http://gcc.gnu.org/wiki/DebugFissionDWP | |
11741 | ||
11742 | To simplify handling of both DWO files ("object" files with the DWARF info) | |
11743 | and DWP files (a file with the DWOs packaged up into one file), we treat | |
11744 | DWP files as having a collection of virtual DWO files. */ | |
3019eac3 DE |
11745 | |
11746 | static hashval_t | |
11747 | hash_dwo_file (const void *item) | |
11748 | { | |
9a3c8263 | 11749 | const struct dwo_file *dwo_file = (const struct dwo_file *) item; |
a2ce51a0 | 11750 | hashval_t hash; |
3019eac3 | 11751 | |
a2ce51a0 DE |
11752 | hash = htab_hash_string (dwo_file->dwo_name); |
11753 | if (dwo_file->comp_dir != NULL) | |
11754 | hash += htab_hash_string (dwo_file->comp_dir); | |
11755 | return hash; | |
3019eac3 DE |
11756 | } |
11757 | ||
11758 | static int | |
11759 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
11760 | { | |
9a3c8263 SM |
11761 | const struct dwo_file *lhs = (const struct dwo_file *) item_lhs; |
11762 | const struct dwo_file *rhs = (const struct dwo_file *) item_rhs; | |
3019eac3 | 11763 | |
a2ce51a0 DE |
11764 | if (strcmp (lhs->dwo_name, rhs->dwo_name) != 0) |
11765 | return 0; | |
11766 | if (lhs->comp_dir == NULL || rhs->comp_dir == NULL) | |
11767 | return lhs->comp_dir == rhs->comp_dir; | |
11768 | return strcmp (lhs->comp_dir, rhs->comp_dir) == 0; | |
3019eac3 DE |
11769 | } |
11770 | ||
11771 | /* Allocate a hash table for DWO files. */ | |
11772 | ||
11773 | static htab_t | |
ed2dc618 | 11774 | allocate_dwo_file_hash_table (struct objfile *objfile) |
3019eac3 | 11775 | { |
3019eac3 DE |
11776 | return htab_create_alloc_ex (41, |
11777 | hash_dwo_file, | |
11778 | eq_dwo_file, | |
11779 | NULL, | |
11780 | &objfile->objfile_obstack, | |
11781 | hashtab_obstack_allocate, | |
11782 | dummy_obstack_deallocate); | |
11783 | } | |
11784 | ||
80626a55 DE |
11785 | /* Lookup DWO file DWO_NAME. */ |
11786 | ||
11787 | static void ** | |
ed2dc618 SM |
11788 | lookup_dwo_file_slot (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11789 | const char *dwo_name, | |
11790 | const char *comp_dir) | |
80626a55 DE |
11791 | { |
11792 | struct dwo_file find_entry; | |
11793 | void **slot; | |
11794 | ||
11795 | if (dwarf2_per_objfile->dwo_files == NULL) | |
ed2dc618 SM |
11796 | dwarf2_per_objfile->dwo_files |
11797 | = allocate_dwo_file_hash_table (dwarf2_per_objfile->objfile); | |
80626a55 DE |
11798 | |
11799 | memset (&find_entry, 0, sizeof (find_entry)); | |
0ac5b59e DE |
11800 | find_entry.dwo_name = dwo_name; |
11801 | find_entry.comp_dir = comp_dir; | |
80626a55 DE |
11802 | slot = htab_find_slot (dwarf2_per_objfile->dwo_files, &find_entry, INSERT); |
11803 | ||
11804 | return slot; | |
11805 | } | |
11806 | ||
3019eac3 DE |
11807 | static hashval_t |
11808 | hash_dwo_unit (const void *item) | |
11809 | { | |
9a3c8263 | 11810 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 DE |
11811 | |
11812 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
11813 | return dwo_unit->signature; | |
11814 | } | |
11815 | ||
11816 | static int | |
11817 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
11818 | { | |
9a3c8263 SM |
11819 | const struct dwo_unit *lhs = (const struct dwo_unit *) item_lhs; |
11820 | const struct dwo_unit *rhs = (const struct dwo_unit *) item_rhs; | |
3019eac3 DE |
11821 | |
11822 | /* The signature is assumed to be unique within the DWO file. | |
11823 | So while object file CU dwo_id's always have the value zero, | |
11824 | that's OK, assuming each object file DWO file has only one CU, | |
11825 | and that's the rule for now. */ | |
11826 | return lhs->signature == rhs->signature; | |
11827 | } | |
11828 | ||
11829 | /* Allocate a hash table for DWO CUs,TUs. | |
11830 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
11831 | ||
11832 | static htab_t | |
11833 | allocate_dwo_unit_table (struct objfile *objfile) | |
11834 | { | |
11835 | /* Start out with a pretty small number. | |
11836 | Generally DWO files contain only one CU and maybe some TUs. */ | |
11837 | return htab_create_alloc_ex (3, | |
11838 | hash_dwo_unit, | |
11839 | eq_dwo_unit, | |
11840 | NULL, | |
11841 | &objfile->objfile_obstack, | |
11842 | hashtab_obstack_allocate, | |
11843 | dummy_obstack_deallocate); | |
11844 | } | |
11845 | ||
80626a55 | 11846 | /* Structure used to pass data to create_dwo_debug_info_hash_table_reader. */ |
3019eac3 | 11847 | |
19c3d4c9 | 11848 | struct create_dwo_cu_data |
3019eac3 DE |
11849 | { |
11850 | struct dwo_file *dwo_file; | |
19c3d4c9 | 11851 | struct dwo_unit dwo_unit; |
3019eac3 DE |
11852 | }; |
11853 | ||
19c3d4c9 | 11854 | /* die_reader_func for create_dwo_cu. */ |
3019eac3 DE |
11855 | |
11856 | static void | |
19c3d4c9 DE |
11857 | create_dwo_cu_reader (const struct die_reader_specs *reader, |
11858 | const gdb_byte *info_ptr, | |
11859 | struct die_info *comp_unit_die, | |
11860 | int has_children, | |
11861 | void *datap) | |
3019eac3 DE |
11862 | { |
11863 | struct dwarf2_cu *cu = reader->cu; | |
9c541725 | 11864 | sect_offset sect_off = cu->per_cu->sect_off; |
8a0459fd | 11865 | struct dwarf2_section_info *section = cu->per_cu->section; |
9a3c8263 | 11866 | struct create_dwo_cu_data *data = (struct create_dwo_cu_data *) datap; |
3019eac3 | 11867 | struct dwo_file *dwo_file = data->dwo_file; |
19c3d4c9 | 11868 | struct dwo_unit *dwo_unit = &data->dwo_unit; |
3019eac3 | 11869 | struct attribute *attr; |
3019eac3 DE |
11870 | |
11871 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
11872 | if (attr == NULL) | |
11873 | { | |
b98664d3 | 11874 | complaint (_("Dwarf Error: debug entry at offset %s is missing" |
19c3d4c9 | 11875 | " its dwo_id [in module %s]"), |
9d8780f0 | 11876 | sect_offset_str (sect_off), dwo_file->dwo_name); |
3019eac3 DE |
11877 | return; |
11878 | } | |
11879 | ||
3019eac3 DE |
11880 | dwo_unit->dwo_file = dwo_file; |
11881 | dwo_unit->signature = DW_UNSND (attr); | |
8a0459fd | 11882 | dwo_unit->section = section; |
9c541725 | 11883 | dwo_unit->sect_off = sect_off; |
3019eac3 DE |
11884 | dwo_unit->length = cu->per_cu->length; |
11885 | ||
b4f54984 | 11886 | if (dwarf_read_debug) |
9d8780f0 SM |
11887 | fprintf_unfiltered (gdb_stdlog, " offset %s, dwo_id %s\n", |
11888 | sect_offset_str (sect_off), | |
9c541725 | 11889 | hex_string (dwo_unit->signature)); |
3019eac3 DE |
11890 | } |
11891 | ||
33c5cd75 | 11892 | /* Create the dwo_units for the CUs in a DWO_FILE. |
19c3d4c9 | 11893 | Note: This function processes DWO files only, not DWP files. */ |
3019eac3 | 11894 | |
33c5cd75 | 11895 | static void |
ed2dc618 SM |
11896 | create_cus_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11897 | struct dwo_file &dwo_file, dwarf2_section_info §ion, | |
33c5cd75 | 11898 | htab_t &cus_htab) |
3019eac3 DE |
11899 | { |
11900 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
d521ce57 | 11901 | const gdb_byte *info_ptr, *end_ptr; |
3019eac3 | 11902 | |
33c5cd75 DB |
11903 | dwarf2_read_section (objfile, §ion); |
11904 | info_ptr = section.buffer; | |
3019eac3 DE |
11905 | |
11906 | if (info_ptr == NULL) | |
33c5cd75 | 11907 | return; |
3019eac3 | 11908 | |
b4f54984 | 11909 | if (dwarf_read_debug) |
19c3d4c9 DE |
11910 | { |
11911 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", | |
33c5cd75 DB |
11912 | get_section_name (§ion), |
11913 | get_section_file_name (§ion)); | |
19c3d4c9 | 11914 | } |
3019eac3 | 11915 | |
33c5cd75 | 11916 | end_ptr = info_ptr + section.size; |
3019eac3 DE |
11917 | while (info_ptr < end_ptr) |
11918 | { | |
11919 | struct dwarf2_per_cu_data per_cu; | |
33c5cd75 DB |
11920 | struct create_dwo_cu_data create_dwo_cu_data; |
11921 | struct dwo_unit *dwo_unit; | |
11922 | void **slot; | |
11923 | sect_offset sect_off = (sect_offset) (info_ptr - section.buffer); | |
3019eac3 | 11924 | |
19c3d4c9 DE |
11925 | memset (&create_dwo_cu_data.dwo_unit, 0, |
11926 | sizeof (create_dwo_cu_data.dwo_unit)); | |
3019eac3 | 11927 | memset (&per_cu, 0, sizeof (per_cu)); |
e3b94546 | 11928 | per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
3019eac3 | 11929 | per_cu.is_debug_types = 0; |
33c5cd75 DB |
11930 | per_cu.sect_off = sect_offset (info_ptr - section.buffer); |
11931 | per_cu.section = §ion; | |
c5ed0576 | 11932 | create_dwo_cu_data.dwo_file = &dwo_file; |
33c5cd75 DB |
11933 | |
11934 | init_cutu_and_read_dies_no_follow ( | |
11935 | &per_cu, &dwo_file, create_dwo_cu_reader, &create_dwo_cu_data); | |
11936 | info_ptr += per_cu.length; | |
11937 | ||
11938 | // If the unit could not be parsed, skip it. | |
11939 | if (create_dwo_cu_data.dwo_unit.dwo_file == NULL) | |
11940 | continue; | |
3019eac3 | 11941 | |
33c5cd75 DB |
11942 | if (cus_htab == NULL) |
11943 | cus_htab = allocate_dwo_unit_table (objfile); | |
19c3d4c9 | 11944 | |
33c5cd75 DB |
11945 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); |
11946 | *dwo_unit = create_dwo_cu_data.dwo_unit; | |
11947 | slot = htab_find_slot (cus_htab, dwo_unit, INSERT); | |
11948 | gdb_assert (slot != NULL); | |
11949 | if (*slot != NULL) | |
19c3d4c9 | 11950 | { |
33c5cd75 DB |
11951 | const struct dwo_unit *dup_cu = (const struct dwo_unit *)*slot; |
11952 | sect_offset dup_sect_off = dup_cu->sect_off; | |
19c3d4c9 | 11953 | |
b98664d3 | 11954 | complaint (_("debug cu entry at offset %s is duplicate to" |
9d8780f0 SM |
11955 | " the entry at offset %s, signature %s"), |
11956 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
33c5cd75 | 11957 | hex_string (dwo_unit->signature)); |
19c3d4c9 | 11958 | } |
33c5cd75 | 11959 | *slot = (void *)dwo_unit; |
3019eac3 | 11960 | } |
3019eac3 DE |
11961 | } |
11962 | ||
80626a55 DE |
11963 | /* DWP file .debug_{cu,tu}_index section format: |
11964 | [ref: http://gcc.gnu.org/wiki/DebugFissionDWP] | |
11965 | ||
d2415c6c DE |
11966 | DWP Version 1: |
11967 | ||
80626a55 DE |
11968 | Both index sections have the same format, and serve to map a 64-bit |
11969 | signature to a set of section numbers. Each section begins with a header, | |
11970 | followed by a hash table of 64-bit signatures, a parallel table of 32-bit | |
11971 | indexes, and a pool of 32-bit section numbers. The index sections will be | |
11972 | aligned at 8-byte boundaries in the file. | |
11973 | ||
d2415c6c DE |
11974 | The index section header consists of: |
11975 | ||
11976 | V, 32 bit version number | |
11977 | -, 32 bits unused | |
11978 | N, 32 bit number of compilation units or type units in the index | |
11979 | M, 32 bit number of slots in the hash table | |
80626a55 | 11980 | |
d2415c6c | 11981 | Numbers are recorded using the byte order of the application binary. |
80626a55 | 11982 | |
d2415c6c DE |
11983 | The hash table begins at offset 16 in the section, and consists of an array |
11984 | of M 64-bit slots. Each slot contains a 64-bit signature (using the byte | |
11985 | order of the application binary). Unused slots in the hash table are 0. | |
11986 | (We rely on the extreme unlikeliness of a signature being exactly 0.) | |
80626a55 | 11987 | |
d2415c6c DE |
11988 | The parallel table begins immediately after the hash table |
11989 | (at offset 16 + 8 * M from the beginning of the section), and consists of an | |
11990 | array of 32-bit indexes (using the byte order of the application binary), | |
11991 | corresponding 1-1 with slots in the hash table. Each entry in the parallel | |
11992 | table contains a 32-bit index into the pool of section numbers. For unused | |
11993 | hash table slots, the corresponding entry in the parallel table will be 0. | |
80626a55 | 11994 | |
73869dc2 DE |
11995 | The pool of section numbers begins immediately following the hash table |
11996 | (at offset 16 + 12 * M from the beginning of the section). The pool of | |
11997 | section numbers consists of an array of 32-bit words (using the byte order | |
11998 | of the application binary). Each item in the array is indexed starting | |
11999 | from 0. The hash table entry provides the index of the first section | |
12000 | number in the set. Additional section numbers in the set follow, and the | |
12001 | set is terminated by a 0 entry (section number 0 is not used in ELF). | |
12002 | ||
12003 | In each set of section numbers, the .debug_info.dwo or .debug_types.dwo | |
12004 | section must be the first entry in the set, and the .debug_abbrev.dwo must | |
12005 | be the second entry. Other members of the set may follow in any order. | |
12006 | ||
12007 | --- | |
12008 | ||
12009 | DWP Version 2: | |
12010 | ||
12011 | DWP Version 2 combines all the .debug_info, etc. sections into one, | |
12012 | and the entries in the index tables are now offsets into these sections. | |
12013 | CU offsets begin at 0. TU offsets begin at the size of the .debug_info | |
12014 | section. | |
12015 | ||
12016 | Index Section Contents: | |
12017 | Header | |
12018 | Hash Table of Signatures dwp_hash_table.hash_table | |
12019 | Parallel Table of Indices dwp_hash_table.unit_table | |
12020 | Table of Section Offsets dwp_hash_table.v2.{section_ids,offsets} | |
12021 | Table of Section Sizes dwp_hash_table.v2.sizes | |
12022 | ||
12023 | The index section header consists of: | |
12024 | ||
12025 | V, 32 bit version number | |
12026 | L, 32 bit number of columns in the table of section offsets | |
12027 | N, 32 bit number of compilation units or type units in the index | |
12028 | M, 32 bit number of slots in the hash table | |
12029 | ||
12030 | Numbers are recorded using the byte order of the application binary. | |
12031 | ||
12032 | The hash table has the same format as version 1. | |
12033 | The parallel table of indices has the same format as version 1, | |
12034 | except that the entries are origin-1 indices into the table of sections | |
12035 | offsets and the table of section sizes. | |
12036 | ||
12037 | The table of offsets begins immediately following the parallel table | |
12038 | (at offset 16 + 12 * M from the beginning of the section). The table is | |
12039 | a two-dimensional array of 32-bit words (using the byte order of the | |
12040 | application binary), with L columns and N+1 rows, in row-major order. | |
12041 | Each row in the array is indexed starting from 0. The first row provides | |
12042 | a key to the remaining rows: each column in this row provides an identifier | |
12043 | for a debug section, and the offsets in the same column of subsequent rows | |
12044 | refer to that section. The section identifiers are: | |
12045 | ||
12046 | DW_SECT_INFO 1 .debug_info.dwo | |
12047 | DW_SECT_TYPES 2 .debug_types.dwo | |
12048 | DW_SECT_ABBREV 3 .debug_abbrev.dwo | |
12049 | DW_SECT_LINE 4 .debug_line.dwo | |
12050 | DW_SECT_LOC 5 .debug_loc.dwo | |
12051 | DW_SECT_STR_OFFSETS 6 .debug_str_offsets.dwo | |
12052 | DW_SECT_MACINFO 7 .debug_macinfo.dwo | |
12053 | DW_SECT_MACRO 8 .debug_macro.dwo | |
12054 | ||
12055 | The offsets provided by the CU and TU index sections are the base offsets | |
12056 | for the contributions made by each CU or TU to the corresponding section | |
12057 | in the package file. Each CU and TU header contains an abbrev_offset | |
12058 | field, used to find the abbreviations table for that CU or TU within the | |
12059 | contribution to the .debug_abbrev.dwo section for that CU or TU, and should | |
12060 | be interpreted as relative to the base offset given in the index section. | |
12061 | Likewise, offsets into .debug_line.dwo from DW_AT_stmt_list attributes | |
12062 | should be interpreted as relative to the base offset for .debug_line.dwo, | |
12063 | and offsets into other debug sections obtained from DWARF attributes should | |
12064 | also be interpreted as relative to the corresponding base offset. | |
12065 | ||
12066 | The table of sizes begins immediately following the table of offsets. | |
12067 | Like the table of offsets, it is a two-dimensional array of 32-bit words, | |
12068 | with L columns and N rows, in row-major order. Each row in the array is | |
12069 | indexed starting from 1 (row 0 is shared by the two tables). | |
12070 | ||
12071 | --- | |
12072 | ||
12073 | Hash table lookup is handled the same in version 1 and 2: | |
12074 | ||
12075 | We assume that N and M will not exceed 2^32 - 1. | |
12076 | The size of the hash table, M, must be 2^k such that 2^k > 3*N/2. | |
12077 | ||
d2415c6c DE |
12078 | Given a 64-bit compilation unit signature or a type signature S, an entry |
12079 | in the hash table is located as follows: | |
80626a55 | 12080 | |
d2415c6c DE |
12081 | 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with |
12082 | the low-order k bits all set to 1. | |
80626a55 | 12083 | |
d2415c6c | 12084 | 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1). |
80626a55 | 12085 | |
d2415c6c DE |
12086 | 3) If the hash table entry at index H matches the signature, use that |
12087 | entry. If the hash table entry at index H is unused (all zeroes), | |
12088 | terminate the search: the signature is not present in the table. | |
80626a55 | 12089 | |
d2415c6c | 12090 | 4) Let H = (H + H') modulo M. Repeat at Step 3. |
80626a55 | 12091 | |
d2415c6c | 12092 | Because M > N and H' and M are relatively prime, the search is guaranteed |
73869dc2 | 12093 | to stop at an unused slot or find the match. */ |
80626a55 DE |
12094 | |
12095 | /* Create a hash table to map DWO IDs to their CU/TU entry in | |
12096 | .debug_{info,types}.dwo in DWP_FILE. | |
12097 | Returns NULL if there isn't one. | |
12098 | Note: This function processes DWP files only, not DWO files. */ | |
12099 | ||
12100 | static struct dwp_hash_table * | |
ed2dc618 SM |
12101 | create_dwp_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12102 | struct dwp_file *dwp_file, int is_debug_types) | |
80626a55 DE |
12103 | { |
12104 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
400174b1 | 12105 | bfd *dbfd = dwp_file->dbfd.get (); |
948f8e3d | 12106 | const gdb_byte *index_ptr, *index_end; |
80626a55 | 12107 | struct dwarf2_section_info *index; |
73869dc2 | 12108 | uint32_t version, nr_columns, nr_units, nr_slots; |
80626a55 DE |
12109 | struct dwp_hash_table *htab; |
12110 | ||
12111 | if (is_debug_types) | |
12112 | index = &dwp_file->sections.tu_index; | |
12113 | else | |
12114 | index = &dwp_file->sections.cu_index; | |
12115 | ||
12116 | if (dwarf2_section_empty_p (index)) | |
12117 | return NULL; | |
12118 | dwarf2_read_section (objfile, index); | |
12119 | ||
12120 | index_ptr = index->buffer; | |
12121 | index_end = index_ptr + index->size; | |
12122 | ||
12123 | version = read_4_bytes (dbfd, index_ptr); | |
73869dc2 DE |
12124 | index_ptr += 4; |
12125 | if (version == 2) | |
12126 | nr_columns = read_4_bytes (dbfd, index_ptr); | |
12127 | else | |
12128 | nr_columns = 0; | |
12129 | index_ptr += 4; | |
80626a55 DE |
12130 | nr_units = read_4_bytes (dbfd, index_ptr); |
12131 | index_ptr += 4; | |
12132 | nr_slots = read_4_bytes (dbfd, index_ptr); | |
12133 | index_ptr += 4; | |
12134 | ||
73869dc2 | 12135 | if (version != 1 && version != 2) |
80626a55 | 12136 | { |
21aa081e | 12137 | error (_("Dwarf Error: unsupported DWP file version (%s)" |
80626a55 | 12138 | " [in module %s]"), |
21aa081e | 12139 | pulongest (version), dwp_file->name); |
80626a55 DE |
12140 | } |
12141 | if (nr_slots != (nr_slots & -nr_slots)) | |
12142 | { | |
21aa081e | 12143 | error (_("Dwarf Error: number of slots in DWP hash table (%s)" |
80626a55 | 12144 | " is not power of 2 [in module %s]"), |
21aa081e | 12145 | pulongest (nr_slots), dwp_file->name); |
80626a55 DE |
12146 | } |
12147 | ||
12148 | htab = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_hash_table); | |
73869dc2 DE |
12149 | htab->version = version; |
12150 | htab->nr_columns = nr_columns; | |
80626a55 DE |
12151 | htab->nr_units = nr_units; |
12152 | htab->nr_slots = nr_slots; | |
12153 | htab->hash_table = index_ptr; | |
12154 | htab->unit_table = htab->hash_table + sizeof (uint64_t) * nr_slots; | |
73869dc2 DE |
12155 | |
12156 | /* Exit early if the table is empty. */ | |
12157 | if (nr_slots == 0 || nr_units == 0 | |
12158 | || (version == 2 && nr_columns == 0)) | |
12159 | { | |
12160 | /* All must be zero. */ | |
12161 | if (nr_slots != 0 || nr_units != 0 | |
12162 | || (version == 2 && nr_columns != 0)) | |
12163 | { | |
b98664d3 | 12164 | complaint (_("Empty DWP but nr_slots,nr_units,nr_columns not" |
73869dc2 DE |
12165 | " all zero [in modules %s]"), |
12166 | dwp_file->name); | |
12167 | } | |
12168 | return htab; | |
12169 | } | |
12170 | ||
12171 | if (version == 1) | |
12172 | { | |
12173 | htab->section_pool.v1.indices = | |
12174 | htab->unit_table + sizeof (uint32_t) * nr_slots; | |
12175 | /* It's harder to decide whether the section is too small in v1. | |
12176 | V1 is deprecated anyway so we punt. */ | |
12177 | } | |
12178 | else | |
12179 | { | |
12180 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
12181 | int *ids = htab->section_pool.v2.section_ids; | |
04fd5eed | 12182 | size_t sizeof_ids = sizeof (htab->section_pool.v2.section_ids); |
73869dc2 DE |
12183 | /* Reverse map for error checking. */ |
12184 | int ids_seen[DW_SECT_MAX + 1]; | |
12185 | int i; | |
12186 | ||
12187 | if (nr_columns < 2) | |
12188 | { | |
12189 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
12190 | " in section table [in module %s]"), | |
12191 | dwp_file->name); | |
12192 | } | |
12193 | if (nr_columns > MAX_NR_V2_DWO_SECTIONS) | |
12194 | { | |
12195 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
12196 | " in section table [in module %s]"), | |
12197 | dwp_file->name); | |
12198 | } | |
04fd5eed GB |
12199 | memset (ids, 255, sizeof_ids); |
12200 | memset (ids_seen, 255, sizeof (ids_seen)); | |
73869dc2 DE |
12201 | for (i = 0; i < nr_columns; ++i) |
12202 | { | |
12203 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
12204 | ||
12205 | if (id < DW_SECT_MIN || id > DW_SECT_MAX) | |
12206 | { | |
12207 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
12208 | " in section table [in module %s]"), | |
12209 | id, dwp_file->name); | |
12210 | } | |
12211 | if (ids_seen[id] != -1) | |
12212 | { | |
12213 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
12214 | " id %d in section table [in module %s]"), | |
12215 | id, dwp_file->name); | |
12216 | } | |
12217 | ids_seen[id] = i; | |
12218 | ids[i] = id; | |
12219 | } | |
12220 | /* Must have exactly one info or types section. */ | |
12221 | if (((ids_seen[DW_SECT_INFO] != -1) | |
12222 | + (ids_seen[DW_SECT_TYPES] != -1)) | |
12223 | != 1) | |
12224 | { | |
12225 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
12226 | " DWO info/types section [in module %s]"), | |
12227 | dwp_file->name); | |
12228 | } | |
12229 | /* Must have an abbrev section. */ | |
12230 | if (ids_seen[DW_SECT_ABBREV] == -1) | |
12231 | { | |
12232 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
12233 | " section [in module %s]"), | |
12234 | dwp_file->name); | |
12235 | } | |
12236 | htab->section_pool.v2.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
12237 | htab->section_pool.v2.sizes = | |
12238 | htab->section_pool.v2.offsets + (sizeof (uint32_t) | |
12239 | * nr_units * nr_columns); | |
12240 | if ((htab->section_pool.v2.sizes + (sizeof (uint32_t) | |
12241 | * nr_units * nr_columns)) | |
12242 | > index_end) | |
12243 | { | |
12244 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
12245 | " [in module %s]"), | |
12246 | dwp_file->name); | |
12247 | } | |
12248 | } | |
80626a55 DE |
12249 | |
12250 | return htab; | |
12251 | } | |
12252 | ||
12253 | /* Update SECTIONS with the data from SECTP. | |
12254 | ||
12255 | This function is like the other "locate" section routines that are | |
12256 | passed to bfd_map_over_sections, but in this context the sections to | |
73869dc2 | 12257 | read comes from the DWP V1 hash table, not the full ELF section table. |
80626a55 DE |
12258 | |
12259 | The result is non-zero for success, or zero if an error was found. */ | |
12260 | ||
12261 | static int | |
73869dc2 DE |
12262 | locate_v1_virtual_dwo_sections (asection *sectp, |
12263 | struct virtual_v1_dwo_sections *sections) | |
80626a55 DE |
12264 | { |
12265 | const struct dwop_section_names *names = &dwop_section_names; | |
12266 | ||
12267 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12268 | { | |
12269 | /* There can be only one. */ | |
049412e3 | 12270 | if (sections->abbrev.s.section != NULL) |
80626a55 | 12271 | return 0; |
049412e3 | 12272 | sections->abbrev.s.section = sectp; |
80626a55 DE |
12273 | sections->abbrev.size = bfd_get_section_size (sectp); |
12274 | } | |
12275 | else if (section_is_p (sectp->name, &names->info_dwo) | |
12276 | || section_is_p (sectp->name, &names->types_dwo)) | |
12277 | { | |
12278 | /* There can be only one. */ | |
049412e3 | 12279 | if (sections->info_or_types.s.section != NULL) |
80626a55 | 12280 | return 0; |
049412e3 | 12281 | sections->info_or_types.s.section = sectp; |
80626a55 DE |
12282 | sections->info_or_types.size = bfd_get_section_size (sectp); |
12283 | } | |
12284 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12285 | { | |
12286 | /* There can be only one. */ | |
049412e3 | 12287 | if (sections->line.s.section != NULL) |
80626a55 | 12288 | return 0; |
049412e3 | 12289 | sections->line.s.section = sectp; |
80626a55 DE |
12290 | sections->line.size = bfd_get_section_size (sectp); |
12291 | } | |
12292 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12293 | { | |
12294 | /* There can be only one. */ | |
049412e3 | 12295 | if (sections->loc.s.section != NULL) |
80626a55 | 12296 | return 0; |
049412e3 | 12297 | sections->loc.s.section = sectp; |
80626a55 DE |
12298 | sections->loc.size = bfd_get_section_size (sectp); |
12299 | } | |
12300 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
12301 | { | |
12302 | /* There can be only one. */ | |
049412e3 | 12303 | if (sections->macinfo.s.section != NULL) |
80626a55 | 12304 | return 0; |
049412e3 | 12305 | sections->macinfo.s.section = sectp; |
80626a55 DE |
12306 | sections->macinfo.size = bfd_get_section_size (sectp); |
12307 | } | |
12308 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12309 | { | |
12310 | /* There can be only one. */ | |
049412e3 | 12311 | if (sections->macro.s.section != NULL) |
80626a55 | 12312 | return 0; |
049412e3 | 12313 | sections->macro.s.section = sectp; |
80626a55 DE |
12314 | sections->macro.size = bfd_get_section_size (sectp); |
12315 | } | |
12316 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12317 | { | |
12318 | /* There can be only one. */ | |
049412e3 | 12319 | if (sections->str_offsets.s.section != NULL) |
80626a55 | 12320 | return 0; |
049412e3 | 12321 | sections->str_offsets.s.section = sectp; |
80626a55 DE |
12322 | sections->str_offsets.size = bfd_get_section_size (sectp); |
12323 | } | |
12324 | else | |
12325 | { | |
12326 | /* No other kind of section is valid. */ | |
12327 | return 0; | |
12328 | } | |
12329 | ||
12330 | return 1; | |
12331 | } | |
12332 | ||
73869dc2 DE |
12333 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. |
12334 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12335 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12336 | This is for DWP version 1 files. */ | |
80626a55 DE |
12337 | |
12338 | static struct dwo_unit * | |
ed2dc618 SM |
12339 | create_dwo_unit_in_dwp_v1 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12340 | struct dwp_file *dwp_file, | |
73869dc2 DE |
12341 | uint32_t unit_index, |
12342 | const char *comp_dir, | |
12343 | ULONGEST signature, int is_debug_types) | |
80626a55 DE |
12344 | { |
12345 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
73869dc2 DE |
12346 | const struct dwp_hash_table *dwp_htab = |
12347 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12348 | bfd *dbfd = dwp_file->dbfd.get (); |
80626a55 DE |
12349 | const char *kind = is_debug_types ? "TU" : "CU"; |
12350 | struct dwo_file *dwo_file; | |
12351 | struct dwo_unit *dwo_unit; | |
73869dc2 | 12352 | struct virtual_v1_dwo_sections sections; |
80626a55 | 12353 | void **dwo_file_slot; |
80626a55 DE |
12354 | int i; |
12355 | ||
73869dc2 DE |
12356 | gdb_assert (dwp_file->version == 1); |
12357 | ||
b4f54984 | 12358 | if (dwarf_read_debug) |
80626a55 | 12359 | { |
73869dc2 | 12360 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V1 file: %s\n", |
80626a55 | 12361 | kind, |
73869dc2 | 12362 | pulongest (unit_index), hex_string (signature), |
80626a55 DE |
12363 | dwp_file->name); |
12364 | } | |
12365 | ||
19ac8c2e | 12366 | /* Fetch the sections of this DWO unit. |
80626a55 DE |
12367 | Put a limit on the number of sections we look for so that bad data |
12368 | doesn't cause us to loop forever. */ | |
12369 | ||
73869dc2 | 12370 | #define MAX_NR_V1_DWO_SECTIONS \ |
80626a55 DE |
12371 | (1 /* .debug_info or .debug_types */ \ |
12372 | + 1 /* .debug_abbrev */ \ | |
12373 | + 1 /* .debug_line */ \ | |
12374 | + 1 /* .debug_loc */ \ | |
12375 | + 1 /* .debug_str_offsets */ \ | |
19ac8c2e | 12376 | + 1 /* .debug_macro or .debug_macinfo */ \ |
80626a55 DE |
12377 | + 1 /* trailing zero */) |
12378 | ||
12379 | memset (§ions, 0, sizeof (sections)); | |
80626a55 | 12380 | |
73869dc2 | 12381 | for (i = 0; i < MAX_NR_V1_DWO_SECTIONS; ++i) |
80626a55 DE |
12382 | { |
12383 | asection *sectp; | |
12384 | uint32_t section_nr = | |
12385 | read_4_bytes (dbfd, | |
73869dc2 DE |
12386 | dwp_htab->section_pool.v1.indices |
12387 | + (unit_index + i) * sizeof (uint32_t)); | |
80626a55 DE |
12388 | |
12389 | if (section_nr == 0) | |
12390 | break; | |
12391 | if (section_nr >= dwp_file->num_sections) | |
12392 | { | |
12393 | error (_("Dwarf Error: bad DWP hash table, section number too large" | |
12394 | " [in module %s]"), | |
12395 | dwp_file->name); | |
12396 | } | |
12397 | ||
12398 | sectp = dwp_file->elf_sections[section_nr]; | |
73869dc2 | 12399 | if (! locate_v1_virtual_dwo_sections (sectp, §ions)) |
80626a55 DE |
12400 | { |
12401 | error (_("Dwarf Error: bad DWP hash table, invalid section found" | |
12402 | " [in module %s]"), | |
12403 | dwp_file->name); | |
12404 | } | |
12405 | } | |
12406 | ||
12407 | if (i < 2 | |
a32a8923 DE |
12408 | || dwarf2_section_empty_p (§ions.info_or_types) |
12409 | || dwarf2_section_empty_p (§ions.abbrev)) | |
80626a55 DE |
12410 | { |
12411 | error (_("Dwarf Error: bad DWP hash table, missing DWO sections" | |
12412 | " [in module %s]"), | |
12413 | dwp_file->name); | |
12414 | } | |
73869dc2 | 12415 | if (i == MAX_NR_V1_DWO_SECTIONS) |
80626a55 DE |
12416 | { |
12417 | error (_("Dwarf Error: bad DWP hash table, too many DWO sections" | |
12418 | " [in module %s]"), | |
12419 | dwp_file->name); | |
12420 | } | |
12421 | ||
12422 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12423 | have dwo_unit "live" in that. At least for now. | |
12424 | ||
12425 | The DWP file can be made up of a random collection of CUs and TUs. | |
c766f7ec | 12426 | However, for each CU + set of TUs that came from the same original DWO |
57d63ce2 DE |
12427 | file, we can combine them back into a virtual DWO file to save space |
12428 | (fewer struct dwo_file objects to allocate). Remember that for really | |
80626a55 DE |
12429 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ |
12430 | ||
791afaa2 TT |
12431 | std::string virtual_dwo_name = |
12432 | string_printf ("virtual-dwo/%d-%d-%d-%d", | |
12433 | get_section_id (§ions.abbrev), | |
12434 | get_section_id (§ions.line), | |
12435 | get_section_id (§ions.loc), | |
12436 | get_section_id (§ions.str_offsets)); | |
80626a55 | 12437 | /* Can we use an existing virtual DWO file? */ |
ed2dc618 SM |
12438 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
12439 | virtual_dwo_name.c_str (), | |
12440 | comp_dir); | |
80626a55 DE |
12441 | /* Create one if necessary. */ |
12442 | if (*dwo_file_slot == NULL) | |
12443 | { | |
b4f54984 | 12444 | if (dwarf_read_debug) |
80626a55 DE |
12445 | { |
12446 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 12447 | virtual_dwo_name.c_str ()); |
80626a55 DE |
12448 | } |
12449 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
224c3ddb SM |
12450 | dwo_file->dwo_name |
12451 | = (const char *) obstack_copy0 (&objfile->objfile_obstack, | |
791afaa2 TT |
12452 | virtual_dwo_name.c_str (), |
12453 | virtual_dwo_name.size ()); | |
0ac5b59e | 12454 | dwo_file->comp_dir = comp_dir; |
80626a55 DE |
12455 | dwo_file->sections.abbrev = sections.abbrev; |
12456 | dwo_file->sections.line = sections.line; | |
12457 | dwo_file->sections.loc = sections.loc; | |
12458 | dwo_file->sections.macinfo = sections.macinfo; | |
12459 | dwo_file->sections.macro = sections.macro; | |
12460 | dwo_file->sections.str_offsets = sections.str_offsets; | |
12461 | /* The "str" section is global to the entire DWP file. */ | |
12462 | dwo_file->sections.str = dwp_file->sections.str; | |
57d63ce2 | 12463 | /* The info or types section is assigned below to dwo_unit, |
80626a55 DE |
12464 | there's no need to record it in dwo_file. |
12465 | Also, we can't simply record type sections in dwo_file because | |
12466 | we record a pointer into the vector in dwo_unit. As we collect more | |
12467 | types we'll grow the vector and eventually have to reallocate space | |
57d63ce2 DE |
12468 | for it, invalidating all copies of pointers into the previous |
12469 | contents. */ | |
80626a55 DE |
12470 | *dwo_file_slot = dwo_file; |
12471 | } | |
12472 | else | |
12473 | { | |
b4f54984 | 12474 | if (dwarf_read_debug) |
80626a55 DE |
12475 | { |
12476 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 12477 | virtual_dwo_name.c_str ()); |
80626a55 | 12478 | } |
9a3c8263 | 12479 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
80626a55 | 12480 | } |
80626a55 DE |
12481 | |
12482 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
12483 | dwo_unit->dwo_file = dwo_file; | |
12484 | dwo_unit->signature = signature; | |
8d749320 SM |
12485 | dwo_unit->section = |
12486 | XOBNEW (&objfile->objfile_obstack, struct dwarf2_section_info); | |
8a0459fd | 12487 | *dwo_unit->section = sections.info_or_types; |
57d63ce2 | 12488 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
80626a55 DE |
12489 | |
12490 | return dwo_unit; | |
12491 | } | |
12492 | ||
73869dc2 DE |
12493 | /* Subroutine of create_dwo_unit_in_dwp_v2 to simplify it. |
12494 | Given a pointer to the containing section SECTION, and OFFSET,SIZE of the | |
12495 | piece within that section used by a TU/CU, return a virtual section | |
12496 | of just that piece. */ | |
12497 | ||
12498 | static struct dwarf2_section_info | |
ed2dc618 SM |
12499 | create_dwp_v2_section (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12500 | struct dwarf2_section_info *section, | |
73869dc2 DE |
12501 | bfd_size_type offset, bfd_size_type size) |
12502 | { | |
12503 | struct dwarf2_section_info result; | |
12504 | asection *sectp; | |
12505 | ||
12506 | gdb_assert (section != NULL); | |
12507 | gdb_assert (!section->is_virtual); | |
12508 | ||
12509 | memset (&result, 0, sizeof (result)); | |
12510 | result.s.containing_section = section; | |
12511 | result.is_virtual = 1; | |
12512 | ||
12513 | if (size == 0) | |
12514 | return result; | |
12515 | ||
12516 | sectp = get_section_bfd_section (section); | |
12517 | ||
12518 | /* Flag an error if the piece denoted by OFFSET,SIZE is outside the | |
12519 | bounds of the real section. This is a pretty-rare event, so just | |
12520 | flag an error (easier) instead of a warning and trying to cope. */ | |
12521 | if (sectp == NULL | |
12522 | || offset + size > bfd_get_section_size (sectp)) | |
12523 | { | |
73869dc2 DE |
12524 | error (_("Dwarf Error: Bad DWP V2 section info, doesn't fit" |
12525 | " in section %s [in module %s]"), | |
12526 | sectp ? bfd_section_name (abfd, sectp) : "<unknown>", | |
12527 | objfile_name (dwarf2_per_objfile->objfile)); | |
12528 | } | |
12529 | ||
12530 | result.virtual_offset = offset; | |
12531 | result.size = size; | |
12532 | return result; | |
12533 | } | |
12534 | ||
12535 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
12536 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12537 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12538 | This is for DWP version 2 files. */ | |
12539 | ||
12540 | static struct dwo_unit * | |
ed2dc618 SM |
12541 | create_dwo_unit_in_dwp_v2 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12542 | struct dwp_file *dwp_file, | |
73869dc2 DE |
12543 | uint32_t unit_index, |
12544 | const char *comp_dir, | |
12545 | ULONGEST signature, int is_debug_types) | |
12546 | { | |
12547 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
12548 | const struct dwp_hash_table *dwp_htab = | |
12549 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12550 | bfd *dbfd = dwp_file->dbfd.get (); |
73869dc2 DE |
12551 | const char *kind = is_debug_types ? "TU" : "CU"; |
12552 | struct dwo_file *dwo_file; | |
12553 | struct dwo_unit *dwo_unit; | |
12554 | struct virtual_v2_dwo_sections sections; | |
12555 | void **dwo_file_slot; | |
73869dc2 DE |
12556 | int i; |
12557 | ||
12558 | gdb_assert (dwp_file->version == 2); | |
12559 | ||
b4f54984 | 12560 | if (dwarf_read_debug) |
73869dc2 DE |
12561 | { |
12562 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V2 file: %s\n", | |
12563 | kind, | |
12564 | pulongest (unit_index), hex_string (signature), | |
12565 | dwp_file->name); | |
12566 | } | |
12567 | ||
12568 | /* Fetch the section offsets of this DWO unit. */ | |
12569 | ||
12570 | memset (§ions, 0, sizeof (sections)); | |
73869dc2 DE |
12571 | |
12572 | for (i = 0; i < dwp_htab->nr_columns; ++i) | |
12573 | { | |
12574 | uint32_t offset = read_4_bytes (dbfd, | |
12575 | dwp_htab->section_pool.v2.offsets | |
12576 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12577 | + i) | |
12578 | * sizeof (uint32_t))); | |
12579 | uint32_t size = read_4_bytes (dbfd, | |
12580 | dwp_htab->section_pool.v2.sizes | |
12581 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12582 | + i) | |
12583 | * sizeof (uint32_t))); | |
12584 | ||
12585 | switch (dwp_htab->section_pool.v2.section_ids[i]) | |
12586 | { | |
12587 | case DW_SECT_INFO: | |
12588 | case DW_SECT_TYPES: | |
12589 | sections.info_or_types_offset = offset; | |
12590 | sections.info_or_types_size = size; | |
12591 | break; | |
12592 | case DW_SECT_ABBREV: | |
12593 | sections.abbrev_offset = offset; | |
12594 | sections.abbrev_size = size; | |
12595 | break; | |
12596 | case DW_SECT_LINE: | |
12597 | sections.line_offset = offset; | |
12598 | sections.line_size = size; | |
12599 | break; | |
12600 | case DW_SECT_LOC: | |
12601 | sections.loc_offset = offset; | |
12602 | sections.loc_size = size; | |
12603 | break; | |
12604 | case DW_SECT_STR_OFFSETS: | |
12605 | sections.str_offsets_offset = offset; | |
12606 | sections.str_offsets_size = size; | |
12607 | break; | |
12608 | case DW_SECT_MACINFO: | |
12609 | sections.macinfo_offset = offset; | |
12610 | sections.macinfo_size = size; | |
12611 | break; | |
12612 | case DW_SECT_MACRO: | |
12613 | sections.macro_offset = offset; | |
12614 | sections.macro_size = size; | |
12615 | break; | |
12616 | } | |
12617 | } | |
12618 | ||
12619 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12620 | have dwo_unit "live" in that. At least for now. | |
12621 | ||
12622 | The DWP file can be made up of a random collection of CUs and TUs. | |
12623 | However, for each CU + set of TUs that came from the same original DWO | |
12624 | file, we can combine them back into a virtual DWO file to save space | |
12625 | (fewer struct dwo_file objects to allocate). Remember that for really | |
12626 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
12627 | ||
791afaa2 TT |
12628 | std::string virtual_dwo_name = |
12629 | string_printf ("virtual-dwo/%ld-%ld-%ld-%ld", | |
12630 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), | |
12631 | (long) (sections.line_size ? sections.line_offset : 0), | |
12632 | (long) (sections.loc_size ? sections.loc_offset : 0), | |
12633 | (long) (sections.str_offsets_size | |
12634 | ? sections.str_offsets_offset : 0)); | |
73869dc2 | 12635 | /* Can we use an existing virtual DWO file? */ |
ed2dc618 SM |
12636 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
12637 | virtual_dwo_name.c_str (), | |
12638 | comp_dir); | |
73869dc2 DE |
12639 | /* Create one if necessary. */ |
12640 | if (*dwo_file_slot == NULL) | |
12641 | { | |
b4f54984 | 12642 | if (dwarf_read_debug) |
73869dc2 DE |
12643 | { |
12644 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 12645 | virtual_dwo_name.c_str ()); |
73869dc2 DE |
12646 | } |
12647 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
224c3ddb SM |
12648 | dwo_file->dwo_name |
12649 | = (const char *) obstack_copy0 (&objfile->objfile_obstack, | |
791afaa2 TT |
12650 | virtual_dwo_name.c_str (), |
12651 | virtual_dwo_name.size ()); | |
73869dc2 DE |
12652 | dwo_file->comp_dir = comp_dir; |
12653 | dwo_file->sections.abbrev = | |
ed2dc618 | 12654 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.abbrev, |
73869dc2 DE |
12655 | sections.abbrev_offset, sections.abbrev_size); |
12656 | dwo_file->sections.line = | |
ed2dc618 | 12657 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.line, |
73869dc2 DE |
12658 | sections.line_offset, sections.line_size); |
12659 | dwo_file->sections.loc = | |
ed2dc618 | 12660 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.loc, |
73869dc2 DE |
12661 | sections.loc_offset, sections.loc_size); |
12662 | dwo_file->sections.macinfo = | |
ed2dc618 | 12663 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.macinfo, |
73869dc2 DE |
12664 | sections.macinfo_offset, sections.macinfo_size); |
12665 | dwo_file->sections.macro = | |
ed2dc618 | 12666 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.macro, |
73869dc2 DE |
12667 | sections.macro_offset, sections.macro_size); |
12668 | dwo_file->sections.str_offsets = | |
ed2dc618 SM |
12669 | create_dwp_v2_section (dwarf2_per_objfile, |
12670 | &dwp_file->sections.str_offsets, | |
73869dc2 DE |
12671 | sections.str_offsets_offset, |
12672 | sections.str_offsets_size); | |
12673 | /* The "str" section is global to the entire DWP file. */ | |
12674 | dwo_file->sections.str = dwp_file->sections.str; | |
12675 | /* The info or types section is assigned below to dwo_unit, | |
12676 | there's no need to record it in dwo_file. | |
12677 | Also, we can't simply record type sections in dwo_file because | |
12678 | we record a pointer into the vector in dwo_unit. As we collect more | |
12679 | types we'll grow the vector and eventually have to reallocate space | |
12680 | for it, invalidating all copies of pointers into the previous | |
12681 | contents. */ | |
12682 | *dwo_file_slot = dwo_file; | |
12683 | } | |
12684 | else | |
12685 | { | |
b4f54984 | 12686 | if (dwarf_read_debug) |
73869dc2 DE |
12687 | { |
12688 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 12689 | virtual_dwo_name.c_str ()); |
73869dc2 | 12690 | } |
9a3c8263 | 12691 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
73869dc2 | 12692 | } |
73869dc2 DE |
12693 | |
12694 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
12695 | dwo_unit->dwo_file = dwo_file; | |
12696 | dwo_unit->signature = signature; | |
8d749320 SM |
12697 | dwo_unit->section = |
12698 | XOBNEW (&objfile->objfile_obstack, struct dwarf2_section_info); | |
ed2dc618 SM |
12699 | *dwo_unit->section = create_dwp_v2_section (dwarf2_per_objfile, |
12700 | is_debug_types | |
73869dc2 DE |
12701 | ? &dwp_file->sections.types |
12702 | : &dwp_file->sections.info, | |
12703 | sections.info_or_types_offset, | |
12704 | sections.info_or_types_size); | |
12705 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ | |
12706 | ||
12707 | return dwo_unit; | |
12708 | } | |
12709 | ||
57d63ce2 DE |
12710 | /* Lookup the DWO unit with SIGNATURE in DWP_FILE. |
12711 | Returns NULL if the signature isn't found. */ | |
80626a55 DE |
12712 | |
12713 | static struct dwo_unit * | |
ed2dc618 SM |
12714 | lookup_dwo_unit_in_dwp (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12715 | struct dwp_file *dwp_file, const char *comp_dir, | |
57d63ce2 | 12716 | ULONGEST signature, int is_debug_types) |
80626a55 | 12717 | { |
57d63ce2 DE |
12718 | const struct dwp_hash_table *dwp_htab = |
12719 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12720 | bfd *dbfd = dwp_file->dbfd.get (); |
57d63ce2 | 12721 | uint32_t mask = dwp_htab->nr_slots - 1; |
80626a55 DE |
12722 | uint32_t hash = signature & mask; |
12723 | uint32_t hash2 = ((signature >> 32) & mask) | 1; | |
12724 | unsigned int i; | |
12725 | void **slot; | |
870f88f7 | 12726 | struct dwo_unit find_dwo_cu; |
80626a55 DE |
12727 | |
12728 | memset (&find_dwo_cu, 0, sizeof (find_dwo_cu)); | |
12729 | find_dwo_cu.signature = signature; | |
19ac8c2e DE |
12730 | slot = htab_find_slot (is_debug_types |
12731 | ? dwp_file->loaded_tus | |
12732 | : dwp_file->loaded_cus, | |
12733 | &find_dwo_cu, INSERT); | |
80626a55 DE |
12734 | |
12735 | if (*slot != NULL) | |
9a3c8263 | 12736 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12737 | |
12738 | /* Use a for loop so that we don't loop forever on bad debug info. */ | |
57d63ce2 | 12739 | for (i = 0; i < dwp_htab->nr_slots; ++i) |
80626a55 DE |
12740 | { |
12741 | ULONGEST signature_in_table; | |
12742 | ||
12743 | signature_in_table = | |
57d63ce2 | 12744 | read_8_bytes (dbfd, dwp_htab->hash_table + hash * sizeof (uint64_t)); |
80626a55 DE |
12745 | if (signature_in_table == signature) |
12746 | { | |
57d63ce2 DE |
12747 | uint32_t unit_index = |
12748 | read_4_bytes (dbfd, | |
12749 | dwp_htab->unit_table + hash * sizeof (uint32_t)); | |
80626a55 | 12750 | |
73869dc2 DE |
12751 | if (dwp_file->version == 1) |
12752 | { | |
ed2dc618 SM |
12753 | *slot = create_dwo_unit_in_dwp_v1 (dwarf2_per_objfile, |
12754 | dwp_file, unit_index, | |
73869dc2 DE |
12755 | comp_dir, signature, |
12756 | is_debug_types); | |
12757 | } | |
12758 | else | |
12759 | { | |
ed2dc618 SM |
12760 | *slot = create_dwo_unit_in_dwp_v2 (dwarf2_per_objfile, |
12761 | dwp_file, unit_index, | |
73869dc2 DE |
12762 | comp_dir, signature, |
12763 | is_debug_types); | |
12764 | } | |
9a3c8263 | 12765 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12766 | } |
12767 | if (signature_in_table == 0) | |
12768 | return NULL; | |
12769 | hash = (hash + hash2) & mask; | |
12770 | } | |
12771 | ||
12772 | error (_("Dwarf Error: bad DWP hash table, lookup didn't terminate" | |
12773 | " [in module %s]"), | |
12774 | dwp_file->name); | |
12775 | } | |
12776 | ||
ab5088bf | 12777 | /* Subroutine of open_dwo_file,open_dwp_file to simplify them. |
3019eac3 DE |
12778 | Open the file specified by FILE_NAME and hand it off to BFD for |
12779 | preliminary analysis. Return a newly initialized bfd *, which | |
12780 | includes a canonicalized copy of FILE_NAME. | |
80626a55 | 12781 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
6ac97d4c DE |
12782 | SEARCH_CWD is true if the current directory is to be searched. |
12783 | It will be searched before debug-file-directory. | |
13aaf454 DE |
12784 | If successful, the file is added to the bfd include table of the |
12785 | objfile's bfd (see gdb_bfd_record_inclusion). | |
6ac97d4c | 12786 | If unable to find/open the file, return NULL. |
3019eac3 DE |
12787 | NOTE: This function is derived from symfile_bfd_open. */ |
12788 | ||
192b62ce | 12789 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
12790 | try_open_dwop_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12791 | const char *file_name, int is_dwp, int search_cwd) | |
3019eac3 | 12792 | { |
24b9144d | 12793 | int desc; |
9c02c129 DE |
12794 | /* Blech. OPF_TRY_CWD_FIRST also disables searching the path list if |
12795 | FILE_NAME contains a '/'. So we can't use it. Instead prepend "." | |
12796 | to debug_file_directory. */ | |
e0cc99a6 | 12797 | const char *search_path; |
9c02c129 DE |
12798 | static const char dirname_separator_string[] = { DIRNAME_SEPARATOR, '\0' }; |
12799 | ||
e0cc99a6 | 12800 | gdb::unique_xmalloc_ptr<char> search_path_holder; |
6ac97d4c DE |
12801 | if (search_cwd) |
12802 | { | |
12803 | if (*debug_file_directory != '\0') | |
e0cc99a6 TT |
12804 | { |
12805 | search_path_holder.reset (concat (".", dirname_separator_string, | |
12806 | debug_file_directory, | |
12807 | (char *) NULL)); | |
12808 | search_path = search_path_holder.get (); | |
12809 | } | |
6ac97d4c | 12810 | else |
e0cc99a6 | 12811 | search_path = "."; |
6ac97d4c | 12812 | } |
9c02c129 | 12813 | else |
e0cc99a6 | 12814 | search_path = debug_file_directory; |
3019eac3 | 12815 | |
24b9144d | 12816 | openp_flags flags = OPF_RETURN_REALPATH; |
80626a55 DE |
12817 | if (is_dwp) |
12818 | flags |= OPF_SEARCH_IN_PATH; | |
e0cc99a6 TT |
12819 | |
12820 | gdb::unique_xmalloc_ptr<char> absolute_name; | |
9c02c129 | 12821 | desc = openp (search_path, flags, file_name, |
3019eac3 DE |
12822 | O_RDONLY | O_BINARY, &absolute_name); |
12823 | if (desc < 0) | |
12824 | return NULL; | |
12825 | ||
e0cc99a6 TT |
12826 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (absolute_name.get (), |
12827 | gnutarget, desc)); | |
9c02c129 DE |
12828 | if (sym_bfd == NULL) |
12829 | return NULL; | |
192b62ce | 12830 | bfd_set_cacheable (sym_bfd.get (), 1); |
3019eac3 | 12831 | |
192b62ce TT |
12832 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
12833 | return NULL; | |
3019eac3 | 12834 | |
13aaf454 DE |
12835 | /* Success. Record the bfd as having been included by the objfile's bfd. |
12836 | This is important because things like demangled_names_hash lives in the | |
12837 | objfile's per_bfd space and may have references to things like symbol | |
12838 | names that live in the DWO/DWP file's per_bfd space. PR 16426. */ | |
192b62ce | 12839 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, sym_bfd.get ()); |
13aaf454 | 12840 | |
3019eac3 DE |
12841 | return sym_bfd; |
12842 | } | |
12843 | ||
ab5088bf | 12844 | /* Try to open DWO file FILE_NAME. |
3019eac3 DE |
12845 | COMP_DIR is the DW_AT_comp_dir attribute. |
12846 | The result is the bfd handle of the file. | |
12847 | If there is a problem finding or opening the file, return NULL. | |
12848 | Upon success, the canonicalized path of the file is stored in the bfd, | |
12849 | same as symfile_bfd_open. */ | |
12850 | ||
192b62ce | 12851 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
12852 | open_dwo_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12853 | const char *file_name, const char *comp_dir) | |
3019eac3 | 12854 | { |
80626a55 | 12855 | if (IS_ABSOLUTE_PATH (file_name)) |
ed2dc618 SM |
12856 | return try_open_dwop_file (dwarf2_per_objfile, file_name, |
12857 | 0 /*is_dwp*/, 0 /*search_cwd*/); | |
3019eac3 DE |
12858 | |
12859 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
12860 | ||
12861 | if (comp_dir != NULL) | |
12862 | { | |
b36cec19 PA |
12863 | char *path_to_try = concat (comp_dir, SLASH_STRING, |
12864 | file_name, (char *) NULL); | |
3019eac3 DE |
12865 | |
12866 | /* NOTE: If comp_dir is a relative path, this will also try the | |
12867 | search path, which seems useful. */ | |
ed2dc618 SM |
12868 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (dwarf2_per_objfile, |
12869 | path_to_try, | |
12870 | 0 /*is_dwp*/, | |
192b62ce | 12871 | 1 /*search_cwd*/)); |
3019eac3 DE |
12872 | xfree (path_to_try); |
12873 | if (abfd != NULL) | |
12874 | return abfd; | |
12875 | } | |
12876 | ||
12877 | /* That didn't work, try debug-file-directory, which, despite its name, | |
12878 | is a list of paths. */ | |
12879 | ||
12880 | if (*debug_file_directory == '\0') | |
12881 | return NULL; | |
12882 | ||
ed2dc618 SM |
12883 | return try_open_dwop_file (dwarf2_per_objfile, file_name, |
12884 | 0 /*is_dwp*/, 1 /*search_cwd*/); | |
3019eac3 DE |
12885 | } |
12886 | ||
80626a55 DE |
12887 | /* This function is mapped across the sections and remembers the offset and |
12888 | size of each of the DWO debugging sections we are interested in. */ | |
12889 | ||
12890 | static void | |
12891 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, void *dwo_sections_ptr) | |
12892 | { | |
9a3c8263 | 12893 | struct dwo_sections *dwo_sections = (struct dwo_sections *) dwo_sections_ptr; |
80626a55 DE |
12894 | const struct dwop_section_names *names = &dwop_section_names; |
12895 | ||
12896 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12897 | { | |
049412e3 | 12898 | dwo_sections->abbrev.s.section = sectp; |
80626a55 DE |
12899 | dwo_sections->abbrev.size = bfd_get_section_size (sectp); |
12900 | } | |
12901 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12902 | { | |
049412e3 | 12903 | dwo_sections->info.s.section = sectp; |
80626a55 DE |
12904 | dwo_sections->info.size = bfd_get_section_size (sectp); |
12905 | } | |
12906 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12907 | { | |
049412e3 | 12908 | dwo_sections->line.s.section = sectp; |
80626a55 DE |
12909 | dwo_sections->line.size = bfd_get_section_size (sectp); |
12910 | } | |
12911 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12912 | { | |
049412e3 | 12913 | dwo_sections->loc.s.section = sectp; |
80626a55 DE |
12914 | dwo_sections->loc.size = bfd_get_section_size (sectp); |
12915 | } | |
12916 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
12917 | { | |
049412e3 | 12918 | dwo_sections->macinfo.s.section = sectp; |
80626a55 DE |
12919 | dwo_sections->macinfo.size = bfd_get_section_size (sectp); |
12920 | } | |
12921 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12922 | { | |
049412e3 | 12923 | dwo_sections->macro.s.section = sectp; |
80626a55 DE |
12924 | dwo_sections->macro.size = bfd_get_section_size (sectp); |
12925 | } | |
12926 | else if (section_is_p (sectp->name, &names->str_dwo)) | |
12927 | { | |
049412e3 | 12928 | dwo_sections->str.s.section = sectp; |
80626a55 DE |
12929 | dwo_sections->str.size = bfd_get_section_size (sectp); |
12930 | } | |
12931 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12932 | { | |
049412e3 | 12933 | dwo_sections->str_offsets.s.section = sectp; |
80626a55 DE |
12934 | dwo_sections->str_offsets.size = bfd_get_section_size (sectp); |
12935 | } | |
12936 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
12937 | { | |
12938 | struct dwarf2_section_info type_section; | |
12939 | ||
12940 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 12941 | type_section.s.section = sectp; |
80626a55 DE |
12942 | type_section.size = bfd_get_section_size (sectp); |
12943 | VEC_safe_push (dwarf2_section_info_def, dwo_sections->types, | |
12944 | &type_section); | |
12945 | } | |
12946 | } | |
12947 | ||
ab5088bf | 12948 | /* Initialize the use of the DWO file specified by DWO_NAME and referenced |
19c3d4c9 | 12949 | by PER_CU. This is for the non-DWP case. |
80626a55 | 12950 | The result is NULL if DWO_NAME can't be found. */ |
3019eac3 DE |
12951 | |
12952 | static struct dwo_file * | |
0ac5b59e DE |
12953 | open_and_init_dwo_file (struct dwarf2_per_cu_data *per_cu, |
12954 | const char *dwo_name, const char *comp_dir) | |
3019eac3 | 12955 | { |
ed2dc618 | 12956 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
3019eac3 | 12957 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 | 12958 | |
ed2dc618 | 12959 | gdb_bfd_ref_ptr dbfd (open_dwo_file (dwarf2_per_objfile, dwo_name, comp_dir)); |
80626a55 DE |
12960 | if (dbfd == NULL) |
12961 | { | |
b4f54984 | 12962 | if (dwarf_read_debug) |
80626a55 DE |
12963 | fprintf_unfiltered (gdb_stdlog, "DWO file not found: %s\n", dwo_name); |
12964 | return NULL; | |
12965 | } | |
263db9a1 TT |
12966 | |
12967 | /* We use a unique pointer here, despite the obstack allocation, | |
12968 | because a dwo_file needs some cleanup if it is abandoned. */ | |
12969 | dwo_file_up dwo_file (OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
12970 | struct dwo_file)); | |
0ac5b59e DE |
12971 | dwo_file->dwo_name = dwo_name; |
12972 | dwo_file->comp_dir = comp_dir; | |
192b62ce | 12973 | dwo_file->dbfd = dbfd.release (); |
3019eac3 | 12974 | |
192b62ce TT |
12975 | bfd_map_over_sections (dwo_file->dbfd, dwarf2_locate_dwo_sections, |
12976 | &dwo_file->sections); | |
3019eac3 | 12977 | |
ed2dc618 SM |
12978 | create_cus_hash_table (dwarf2_per_objfile, *dwo_file, dwo_file->sections.info, |
12979 | dwo_file->cus); | |
3019eac3 | 12980 | |
263db9a1 | 12981 | create_debug_types_hash_table (dwarf2_per_objfile, dwo_file.get (), |
ed2dc618 | 12982 | dwo_file->sections.types, dwo_file->tus); |
3019eac3 | 12983 | |
b4f54984 | 12984 | if (dwarf_read_debug) |
80626a55 DE |
12985 | fprintf_unfiltered (gdb_stdlog, "DWO file found: %s\n", dwo_name); |
12986 | ||
263db9a1 | 12987 | return dwo_file.release (); |
3019eac3 DE |
12988 | } |
12989 | ||
80626a55 | 12990 | /* This function is mapped across the sections and remembers the offset and |
73869dc2 DE |
12991 | size of each of the DWP debugging sections common to version 1 and 2 that |
12992 | we are interested in. */ | |
3019eac3 | 12993 | |
80626a55 | 12994 | static void |
73869dc2 DE |
12995 | dwarf2_locate_common_dwp_sections (bfd *abfd, asection *sectp, |
12996 | void *dwp_file_ptr) | |
3019eac3 | 12997 | { |
9a3c8263 | 12998 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
80626a55 DE |
12999 | const struct dwop_section_names *names = &dwop_section_names; |
13000 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
3019eac3 | 13001 | |
80626a55 | 13002 | /* Record the ELF section number for later lookup: this is what the |
73869dc2 | 13003 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ |
80626a55 DE |
13004 | gdb_assert (elf_section_nr < dwp_file->num_sections); |
13005 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
3019eac3 | 13006 | |
80626a55 DE |
13007 | /* Look for specific sections that we need. */ |
13008 | if (section_is_p (sectp->name, &names->str_dwo)) | |
13009 | { | |
049412e3 | 13010 | dwp_file->sections.str.s.section = sectp; |
80626a55 DE |
13011 | dwp_file->sections.str.size = bfd_get_section_size (sectp); |
13012 | } | |
13013 | else if (section_is_p (sectp->name, &names->cu_index)) | |
13014 | { | |
049412e3 | 13015 | dwp_file->sections.cu_index.s.section = sectp; |
80626a55 DE |
13016 | dwp_file->sections.cu_index.size = bfd_get_section_size (sectp); |
13017 | } | |
13018 | else if (section_is_p (sectp->name, &names->tu_index)) | |
13019 | { | |
049412e3 | 13020 | dwp_file->sections.tu_index.s.section = sectp; |
80626a55 DE |
13021 | dwp_file->sections.tu_index.size = bfd_get_section_size (sectp); |
13022 | } | |
13023 | } | |
3019eac3 | 13024 | |
73869dc2 DE |
13025 | /* This function is mapped across the sections and remembers the offset and |
13026 | size of each of the DWP version 2 debugging sections that we are interested | |
13027 | in. This is split into a separate function because we don't know if we | |
13028 | have version 1 or 2 until we parse the cu_index/tu_index sections. */ | |
13029 | ||
13030 | static void | |
13031 | dwarf2_locate_v2_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
13032 | { | |
9a3c8263 | 13033 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
73869dc2 DE |
13034 | const struct dwop_section_names *names = &dwop_section_names; |
13035 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
13036 | ||
13037 | /* Record the ELF section number for later lookup: this is what the | |
13038 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
13039 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
13040 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
13041 | ||
13042 | /* Look for specific sections that we need. */ | |
13043 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
13044 | { | |
049412e3 | 13045 | dwp_file->sections.abbrev.s.section = sectp; |
73869dc2 DE |
13046 | dwp_file->sections.abbrev.size = bfd_get_section_size (sectp); |
13047 | } | |
13048 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
13049 | { | |
049412e3 | 13050 | dwp_file->sections.info.s.section = sectp; |
73869dc2 DE |
13051 | dwp_file->sections.info.size = bfd_get_section_size (sectp); |
13052 | } | |
13053 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
13054 | { | |
049412e3 | 13055 | dwp_file->sections.line.s.section = sectp; |
73869dc2 DE |
13056 | dwp_file->sections.line.size = bfd_get_section_size (sectp); |
13057 | } | |
13058 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
13059 | { | |
049412e3 | 13060 | dwp_file->sections.loc.s.section = sectp; |
73869dc2 DE |
13061 | dwp_file->sections.loc.size = bfd_get_section_size (sectp); |
13062 | } | |
13063 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
13064 | { | |
049412e3 | 13065 | dwp_file->sections.macinfo.s.section = sectp; |
73869dc2 DE |
13066 | dwp_file->sections.macinfo.size = bfd_get_section_size (sectp); |
13067 | } | |
13068 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
13069 | { | |
049412e3 | 13070 | dwp_file->sections.macro.s.section = sectp; |
73869dc2 DE |
13071 | dwp_file->sections.macro.size = bfd_get_section_size (sectp); |
13072 | } | |
13073 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
13074 | { | |
049412e3 | 13075 | dwp_file->sections.str_offsets.s.section = sectp; |
73869dc2 DE |
13076 | dwp_file->sections.str_offsets.size = bfd_get_section_size (sectp); |
13077 | } | |
13078 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
13079 | { | |
049412e3 | 13080 | dwp_file->sections.types.s.section = sectp; |
73869dc2 DE |
13081 | dwp_file->sections.types.size = bfd_get_section_size (sectp); |
13082 | } | |
13083 | } | |
13084 | ||
80626a55 | 13085 | /* Hash function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13086 | |
80626a55 DE |
13087 | static hashval_t |
13088 | hash_dwp_loaded_cutus (const void *item) | |
13089 | { | |
9a3c8263 | 13090 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 | 13091 | |
80626a55 DE |
13092 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
13093 | return dwo_unit->signature; | |
3019eac3 DE |
13094 | } |
13095 | ||
80626a55 | 13096 | /* Equality function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13097 | |
80626a55 DE |
13098 | static int |
13099 | eq_dwp_loaded_cutus (const void *a, const void *b) | |
3019eac3 | 13100 | { |
9a3c8263 SM |
13101 | const struct dwo_unit *dua = (const struct dwo_unit *) a; |
13102 | const struct dwo_unit *dub = (const struct dwo_unit *) b; | |
3019eac3 | 13103 | |
80626a55 DE |
13104 | return dua->signature == dub->signature; |
13105 | } | |
3019eac3 | 13106 | |
80626a55 | 13107 | /* Allocate a hash table for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13108 | |
80626a55 DE |
13109 | static htab_t |
13110 | allocate_dwp_loaded_cutus_table (struct objfile *objfile) | |
13111 | { | |
13112 | return htab_create_alloc_ex (3, | |
13113 | hash_dwp_loaded_cutus, | |
13114 | eq_dwp_loaded_cutus, | |
13115 | NULL, | |
13116 | &objfile->objfile_obstack, | |
13117 | hashtab_obstack_allocate, | |
13118 | dummy_obstack_deallocate); | |
13119 | } | |
3019eac3 | 13120 | |
ab5088bf DE |
13121 | /* Try to open DWP file FILE_NAME. |
13122 | The result is the bfd handle of the file. | |
13123 | If there is a problem finding or opening the file, return NULL. | |
13124 | Upon success, the canonicalized path of the file is stored in the bfd, | |
13125 | same as symfile_bfd_open. */ | |
13126 | ||
192b62ce | 13127 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
13128 | open_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
13129 | const char *file_name) | |
ab5088bf | 13130 | { |
ed2dc618 SM |
13131 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (dwarf2_per_objfile, file_name, |
13132 | 1 /*is_dwp*/, | |
192b62ce | 13133 | 1 /*search_cwd*/)); |
6ac97d4c DE |
13134 | if (abfd != NULL) |
13135 | return abfd; | |
13136 | ||
13137 | /* Work around upstream bug 15652. | |
13138 | http://sourceware.org/bugzilla/show_bug.cgi?id=15652 | |
13139 | [Whether that's a "bug" is debatable, but it is getting in our way.] | |
13140 | We have no real idea where the dwp file is, because gdb's realpath-ing | |
13141 | of the executable's path may have discarded the needed info. | |
13142 | [IWBN if the dwp file name was recorded in the executable, akin to | |
13143 | .gnu_debuglink, but that doesn't exist yet.] | |
13144 | Strip the directory from FILE_NAME and search again. */ | |
13145 | if (*debug_file_directory != '\0') | |
13146 | { | |
13147 | /* Don't implicitly search the current directory here. | |
13148 | If the user wants to search "." to handle this case, | |
13149 | it must be added to debug-file-directory. */ | |
ed2dc618 SM |
13150 | return try_open_dwop_file (dwarf2_per_objfile, |
13151 | lbasename (file_name), 1 /*is_dwp*/, | |
6ac97d4c DE |
13152 | 0 /*search_cwd*/); |
13153 | } | |
13154 | ||
13155 | return NULL; | |
ab5088bf DE |
13156 | } |
13157 | ||
80626a55 DE |
13158 | /* Initialize the use of the DWP file for the current objfile. |
13159 | By convention the name of the DWP file is ${objfile}.dwp. | |
13160 | The result is NULL if it can't be found. */ | |
a766d390 | 13161 | |
400174b1 | 13162 | static std::unique_ptr<struct dwp_file> |
ed2dc618 | 13163 | open_and_init_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
80626a55 DE |
13164 | { |
13165 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
80626a55 | 13166 | |
82bf32bc JK |
13167 | /* Try to find first .dwp for the binary file before any symbolic links |
13168 | resolving. */ | |
6c447423 DE |
13169 | |
13170 | /* If the objfile is a debug file, find the name of the real binary | |
13171 | file and get the name of dwp file from there. */ | |
d721ba37 | 13172 | std::string dwp_name; |
6c447423 DE |
13173 | if (objfile->separate_debug_objfile_backlink != NULL) |
13174 | { | |
13175 | struct objfile *backlink = objfile->separate_debug_objfile_backlink; | |
13176 | const char *backlink_basename = lbasename (backlink->original_name); | |
6c447423 | 13177 | |
d721ba37 | 13178 | dwp_name = ldirname (objfile->original_name) + SLASH_STRING + backlink_basename; |
6c447423 DE |
13179 | } |
13180 | else | |
d721ba37 PA |
13181 | dwp_name = objfile->original_name; |
13182 | ||
13183 | dwp_name += ".dwp"; | |
80626a55 | 13184 | |
ed2dc618 | 13185 | gdb_bfd_ref_ptr dbfd (open_dwp_file (dwarf2_per_objfile, dwp_name.c_str ())); |
82bf32bc JK |
13186 | if (dbfd == NULL |
13187 | && strcmp (objfile->original_name, objfile_name (objfile)) != 0) | |
13188 | { | |
13189 | /* Try to find .dwp for the binary file after gdb_realpath resolving. */ | |
d721ba37 PA |
13190 | dwp_name = objfile_name (objfile); |
13191 | dwp_name += ".dwp"; | |
ed2dc618 | 13192 | dbfd = open_dwp_file (dwarf2_per_objfile, dwp_name.c_str ()); |
82bf32bc JK |
13193 | } |
13194 | ||
80626a55 DE |
13195 | if (dbfd == NULL) |
13196 | { | |
b4f54984 | 13197 | if (dwarf_read_debug) |
d721ba37 | 13198 | fprintf_unfiltered (gdb_stdlog, "DWP file not found: %s\n", dwp_name.c_str ()); |
400174b1 | 13199 | return std::unique_ptr<dwp_file> (); |
3019eac3 | 13200 | } |
400174b1 TT |
13201 | |
13202 | const char *name = bfd_get_filename (dbfd.get ()); | |
13203 | std::unique_ptr<struct dwp_file> dwp_file | |
13204 | (new struct dwp_file (name, std::move (dbfd))); | |
c906108c | 13205 | |
80626a55 | 13206 | /* +1: section 0 is unused */ |
192b62ce | 13207 | dwp_file->num_sections = bfd_count_sections (dwp_file->dbfd) + 1; |
80626a55 DE |
13208 | dwp_file->elf_sections = |
13209 | OBSTACK_CALLOC (&objfile->objfile_obstack, | |
13210 | dwp_file->num_sections, asection *); | |
13211 | ||
400174b1 TT |
13212 | bfd_map_over_sections (dwp_file->dbfd.get (), |
13213 | dwarf2_locate_common_dwp_sections, | |
13214 | dwp_file.get ()); | |
80626a55 | 13215 | |
400174b1 TT |
13216 | dwp_file->cus = create_dwp_hash_table (dwarf2_per_objfile, dwp_file.get (), |
13217 | 0); | |
80626a55 | 13218 | |
400174b1 TT |
13219 | dwp_file->tus = create_dwp_hash_table (dwarf2_per_objfile, dwp_file.get (), |
13220 | 1); | |
80626a55 | 13221 | |
73869dc2 | 13222 | /* The DWP file version is stored in the hash table. Oh well. */ |
08302ed2 DE |
13223 | if (dwp_file->cus && dwp_file->tus |
13224 | && dwp_file->cus->version != dwp_file->tus->version) | |
73869dc2 DE |
13225 | { |
13226 | /* Technically speaking, we should try to limp along, but this is | |
fbcbc3fd | 13227 | pretty bizarre. We use pulongest here because that's the established |
4d65956b | 13228 | portability solution (e.g, we cannot use %u for uint32_t). */ |
fbcbc3fd DE |
13229 | error (_("Dwarf Error: DWP file CU version %s doesn't match" |
13230 | " TU version %s [in DWP file %s]"), | |
13231 | pulongest (dwp_file->cus->version), | |
d721ba37 | 13232 | pulongest (dwp_file->tus->version), dwp_name.c_str ()); |
73869dc2 | 13233 | } |
08302ed2 DE |
13234 | |
13235 | if (dwp_file->cus) | |
13236 | dwp_file->version = dwp_file->cus->version; | |
13237 | else if (dwp_file->tus) | |
13238 | dwp_file->version = dwp_file->tus->version; | |
13239 | else | |
13240 | dwp_file->version = 2; | |
73869dc2 DE |
13241 | |
13242 | if (dwp_file->version == 2) | |
400174b1 TT |
13243 | bfd_map_over_sections (dwp_file->dbfd.get (), |
13244 | dwarf2_locate_v2_dwp_sections, | |
13245 | dwp_file.get ()); | |
73869dc2 | 13246 | |
19ac8c2e DE |
13247 | dwp_file->loaded_cus = allocate_dwp_loaded_cutus_table (objfile); |
13248 | dwp_file->loaded_tus = allocate_dwp_loaded_cutus_table (objfile); | |
80626a55 | 13249 | |
b4f54984 | 13250 | if (dwarf_read_debug) |
80626a55 DE |
13251 | { |
13252 | fprintf_unfiltered (gdb_stdlog, "DWP file found: %s\n", dwp_file->name); | |
13253 | fprintf_unfiltered (gdb_stdlog, | |
21aa081e PA |
13254 | " %s CUs, %s TUs\n", |
13255 | pulongest (dwp_file->cus ? dwp_file->cus->nr_units : 0), | |
13256 | pulongest (dwp_file->tus ? dwp_file->tus->nr_units : 0)); | |
80626a55 DE |
13257 | } |
13258 | ||
13259 | return dwp_file; | |
3019eac3 | 13260 | } |
c906108c | 13261 | |
ab5088bf DE |
13262 | /* Wrapper around open_and_init_dwp_file, only open it once. */ |
13263 | ||
13264 | static struct dwp_file * | |
ed2dc618 | 13265 | get_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
ab5088bf DE |
13266 | { |
13267 | if (! dwarf2_per_objfile->dwp_checked) | |
13268 | { | |
ed2dc618 SM |
13269 | dwarf2_per_objfile->dwp_file |
13270 | = open_and_init_dwp_file (dwarf2_per_objfile); | |
ab5088bf DE |
13271 | dwarf2_per_objfile->dwp_checked = 1; |
13272 | } | |
400174b1 | 13273 | return dwarf2_per_objfile->dwp_file.get (); |
ab5088bf DE |
13274 | } |
13275 | ||
80626a55 DE |
13276 | /* Subroutine of lookup_dwo_comp_unit, lookup_dwo_type_unit. |
13277 | Look up the CU/TU with signature SIGNATURE, either in DWO file DWO_NAME | |
13278 | or in the DWP file for the objfile, referenced by THIS_UNIT. | |
3019eac3 | 13279 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. |
80626a55 DE |
13280 | IS_DEBUG_TYPES is non-zero if reading a TU, otherwise read a CU. |
13281 | ||
13282 | This is called, for example, when wanting to read a variable with a | |
13283 | complex location. Therefore we don't want to do file i/o for every call. | |
13284 | Therefore we don't want to look for a DWO file on every call. | |
13285 | Therefore we first see if we've already seen SIGNATURE in a DWP file, | |
13286 | then we check if we've already seen DWO_NAME, and only THEN do we check | |
13287 | for a DWO file. | |
13288 | ||
1c658ad5 | 13289 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
80626a55 | 13290 | (dwo_id mismatch or couldn't find the DWO/DWP file). */ |
debd256d | 13291 | |
3019eac3 | 13292 | static struct dwo_unit * |
80626a55 DE |
13293 | lookup_dwo_cutu (struct dwarf2_per_cu_data *this_unit, |
13294 | const char *dwo_name, const char *comp_dir, | |
13295 | ULONGEST signature, int is_debug_types) | |
3019eac3 | 13296 | { |
ed2dc618 | 13297 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_unit->dwarf2_per_objfile; |
3019eac3 | 13298 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
80626a55 DE |
13299 | const char *kind = is_debug_types ? "TU" : "CU"; |
13300 | void **dwo_file_slot; | |
3019eac3 | 13301 | struct dwo_file *dwo_file; |
80626a55 | 13302 | struct dwp_file *dwp_file; |
cb1df416 | 13303 | |
6a506a2d DE |
13304 | /* First see if there's a DWP file. |
13305 | If we have a DWP file but didn't find the DWO inside it, don't | |
13306 | look for the original DWO file. It makes gdb behave differently | |
13307 | depending on whether one is debugging in the build tree. */ | |
cf2c3c16 | 13308 | |
ed2dc618 | 13309 | dwp_file = get_dwp_file (dwarf2_per_objfile); |
80626a55 | 13310 | if (dwp_file != NULL) |
cf2c3c16 | 13311 | { |
80626a55 DE |
13312 | const struct dwp_hash_table *dwp_htab = |
13313 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
13314 | ||
13315 | if (dwp_htab != NULL) | |
13316 | { | |
13317 | struct dwo_unit *dwo_cutu = | |
ed2dc618 | 13318 | lookup_dwo_unit_in_dwp (dwarf2_per_objfile, dwp_file, comp_dir, |
57d63ce2 | 13319 | signature, is_debug_types); |
80626a55 DE |
13320 | |
13321 | if (dwo_cutu != NULL) | |
13322 | { | |
b4f54984 | 13323 | if (dwarf_read_debug) |
80626a55 DE |
13324 | { |
13325 | fprintf_unfiltered (gdb_stdlog, | |
13326 | "Virtual DWO %s %s found: @%s\n", | |
13327 | kind, hex_string (signature), | |
13328 | host_address_to_string (dwo_cutu)); | |
13329 | } | |
13330 | return dwo_cutu; | |
13331 | } | |
13332 | } | |
13333 | } | |
6a506a2d | 13334 | else |
80626a55 | 13335 | { |
6a506a2d | 13336 | /* No DWP file, look for the DWO file. */ |
80626a55 | 13337 | |
ed2dc618 SM |
13338 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
13339 | dwo_name, comp_dir); | |
6a506a2d | 13340 | if (*dwo_file_slot == NULL) |
80626a55 | 13341 | { |
6a506a2d DE |
13342 | /* Read in the file and build a table of the CUs/TUs it contains. */ |
13343 | *dwo_file_slot = open_and_init_dwo_file (this_unit, dwo_name, comp_dir); | |
19c3d4c9 | 13344 | } |
6a506a2d | 13345 | /* NOTE: This will be NULL if unable to open the file. */ |
9a3c8263 | 13346 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
3019eac3 | 13347 | |
6a506a2d | 13348 | if (dwo_file != NULL) |
19c3d4c9 | 13349 | { |
6a506a2d DE |
13350 | struct dwo_unit *dwo_cutu = NULL; |
13351 | ||
13352 | if (is_debug_types && dwo_file->tus) | |
13353 | { | |
13354 | struct dwo_unit find_dwo_cutu; | |
13355 | ||
13356 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
13357 | find_dwo_cutu.signature = signature; | |
9a3c8263 SM |
13358 | dwo_cutu |
13359 | = (struct dwo_unit *) htab_find (dwo_file->tus, &find_dwo_cutu); | |
6a506a2d | 13360 | } |
33c5cd75 | 13361 | else if (!is_debug_types && dwo_file->cus) |
80626a55 | 13362 | { |
33c5cd75 DB |
13363 | struct dwo_unit find_dwo_cutu; |
13364 | ||
13365 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
13366 | find_dwo_cutu.signature = signature; | |
13367 | dwo_cutu = (struct dwo_unit *)htab_find (dwo_file->cus, | |
13368 | &find_dwo_cutu); | |
6a506a2d DE |
13369 | } |
13370 | ||
13371 | if (dwo_cutu != NULL) | |
13372 | { | |
b4f54984 | 13373 | if (dwarf_read_debug) |
6a506a2d DE |
13374 | { |
13375 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) found: @%s\n", | |
13376 | kind, dwo_name, hex_string (signature), | |
13377 | host_address_to_string (dwo_cutu)); | |
13378 | } | |
13379 | return dwo_cutu; | |
80626a55 DE |
13380 | } |
13381 | } | |
2e276125 | 13382 | } |
9cdd5dbd | 13383 | |
80626a55 DE |
13384 | /* We didn't find it. This could mean a dwo_id mismatch, or |
13385 | someone deleted the DWO/DWP file, or the search path isn't set up | |
13386 | correctly to find the file. */ | |
13387 | ||
b4f54984 | 13388 | if (dwarf_read_debug) |
80626a55 DE |
13389 | { |
13390 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) not found\n", | |
13391 | kind, dwo_name, hex_string (signature)); | |
13392 | } | |
3019eac3 | 13393 | |
6656a72d DE |
13394 | /* This is a warning and not a complaint because it can be caused by |
13395 | pilot error (e.g., user accidentally deleting the DWO). */ | |
43942612 DE |
13396 | { |
13397 | /* Print the name of the DWP file if we looked there, helps the user | |
13398 | better diagnose the problem. */ | |
791afaa2 | 13399 | std::string dwp_text; |
43942612 DE |
13400 | |
13401 | if (dwp_file != NULL) | |
791afaa2 TT |
13402 | dwp_text = string_printf (" [in DWP file %s]", |
13403 | lbasename (dwp_file->name)); | |
43942612 | 13404 | |
9d8780f0 | 13405 | warning (_("Could not find DWO %s %s(%s)%s referenced by %s at offset %s" |
43942612 DE |
13406 | " [in module %s]"), |
13407 | kind, dwo_name, hex_string (signature), | |
791afaa2 | 13408 | dwp_text.c_str (), |
43942612 | 13409 | this_unit->is_debug_types ? "TU" : "CU", |
9d8780f0 | 13410 | sect_offset_str (this_unit->sect_off), objfile_name (objfile)); |
43942612 | 13411 | } |
3019eac3 | 13412 | return NULL; |
5fb290d7 DJ |
13413 | } |
13414 | ||
80626a55 DE |
13415 | /* Lookup the DWO CU DWO_NAME/SIGNATURE referenced from THIS_CU. |
13416 | See lookup_dwo_cutu_unit for details. */ | |
13417 | ||
13418 | static struct dwo_unit * | |
13419 | lookup_dwo_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
13420 | const char *dwo_name, const char *comp_dir, | |
13421 | ULONGEST signature) | |
13422 | { | |
13423 | return lookup_dwo_cutu (this_cu, dwo_name, comp_dir, signature, 0); | |
13424 | } | |
13425 | ||
13426 | /* Lookup the DWO TU DWO_NAME/SIGNATURE referenced from THIS_TU. | |
13427 | See lookup_dwo_cutu_unit for details. */ | |
13428 | ||
13429 | static struct dwo_unit * | |
13430 | lookup_dwo_type_unit (struct signatured_type *this_tu, | |
13431 | const char *dwo_name, const char *comp_dir) | |
13432 | { | |
13433 | return lookup_dwo_cutu (&this_tu->per_cu, dwo_name, comp_dir, this_tu->signature, 1); | |
13434 | } | |
13435 | ||
89e63ee4 DE |
13436 | /* Traversal function for queue_and_load_all_dwo_tus. */ |
13437 | ||
13438 | static int | |
13439 | queue_and_load_dwo_tu (void **slot, void *info) | |
13440 | { | |
13441 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
13442 | struct dwarf2_per_cu_data *per_cu = (struct dwarf2_per_cu_data *) info; | |
13443 | ULONGEST signature = dwo_unit->signature; | |
13444 | struct signatured_type *sig_type = | |
13445 | lookup_dwo_signatured_type (per_cu->cu, signature); | |
13446 | ||
13447 | if (sig_type != NULL) | |
13448 | { | |
13449 | struct dwarf2_per_cu_data *sig_cu = &sig_type->per_cu; | |
13450 | ||
13451 | /* We pass NULL for DEPENDENT_CU because we don't yet know if there's | |
13452 | a real dependency of PER_CU on SIG_TYPE. That is detected later | |
13453 | while processing PER_CU. */ | |
13454 | if (maybe_queue_comp_unit (NULL, sig_cu, per_cu->cu->language)) | |
13455 | load_full_type_unit (sig_cu); | |
13456 | VEC_safe_push (dwarf2_per_cu_ptr, per_cu->imported_symtabs, sig_cu); | |
13457 | } | |
13458 | ||
13459 | return 1; | |
13460 | } | |
13461 | ||
13462 | /* Queue all TUs contained in the DWO of PER_CU to be read in. | |
13463 | The DWO may have the only definition of the type, though it may not be | |
13464 | referenced anywhere in PER_CU. Thus we have to load *all* its TUs. | |
13465 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
13466 | ||
13467 | static void | |
13468 | queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *per_cu) | |
13469 | { | |
13470 | struct dwo_unit *dwo_unit; | |
13471 | struct dwo_file *dwo_file; | |
13472 | ||
13473 | gdb_assert (!per_cu->is_debug_types); | |
ed2dc618 | 13474 | gdb_assert (get_dwp_file (per_cu->dwarf2_per_objfile) == NULL); |
89e63ee4 DE |
13475 | gdb_assert (per_cu->cu != NULL); |
13476 | ||
13477 | dwo_unit = per_cu->cu->dwo_unit; | |
13478 | gdb_assert (dwo_unit != NULL); | |
13479 | ||
13480 | dwo_file = dwo_unit->dwo_file; | |
13481 | if (dwo_file->tus != NULL) | |
13482 | htab_traverse_noresize (dwo_file->tus, queue_and_load_dwo_tu, per_cu); | |
13483 | } | |
13484 | ||
3019eac3 | 13485 | /* Free all resources associated with DWO_FILE. |
5dafb3d1 | 13486 | Close the DWO file and munmap the sections. */ |
348e048f DE |
13487 | |
13488 | static void | |
5dafb3d1 | 13489 | free_dwo_file (struct dwo_file *dwo_file) |
348e048f | 13490 | { |
5c6fa7ab | 13491 | /* Note: dbfd is NULL for virtual DWO files. */ |
80626a55 | 13492 | gdb_bfd_unref (dwo_file->dbfd); |
348e048f | 13493 | |
3019eac3 DE |
13494 | VEC_free (dwarf2_section_info_def, dwo_file->sections.types); |
13495 | } | |
348e048f | 13496 | |
3019eac3 | 13497 | /* Traversal function for free_dwo_files. */ |
2ab95328 | 13498 | |
3019eac3 DE |
13499 | static int |
13500 | free_dwo_file_from_slot (void **slot, void *info) | |
13501 | { | |
13502 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
348e048f | 13503 | |
5dafb3d1 | 13504 | free_dwo_file (dwo_file); |
348e048f | 13505 | |
3019eac3 DE |
13506 | return 1; |
13507 | } | |
348e048f | 13508 | |
3019eac3 | 13509 | /* Free all resources associated with DWO_FILES. */ |
348e048f | 13510 | |
3019eac3 DE |
13511 | static void |
13512 | free_dwo_files (htab_t dwo_files, struct objfile *objfile) | |
13513 | { | |
13514 | htab_traverse_noresize (dwo_files, free_dwo_file_from_slot, objfile); | |
348e048f | 13515 | } |
3019eac3 DE |
13516 | \f |
13517 | /* Read in various DIEs. */ | |
348e048f | 13518 | |
d389af10 | 13519 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). |
3e43a32a MS |
13520 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
13521 | already referenced by DW_AT_abstract_origin from the children of the | |
13522 | current DIE. */ | |
d389af10 JK |
13523 | |
13524 | static void | |
13525 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
13526 | { | |
13527 | struct die_info *child_die; | |
791afaa2 | 13528 | sect_offset *offsetp; |
d389af10 JK |
13529 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
13530 | struct die_info *origin_die; | |
13531 | /* Iterator of the ORIGIN_DIE children. */ | |
13532 | struct die_info *origin_child_die; | |
d389af10 | 13533 | struct attribute *attr; |
cd02d79d PA |
13534 | struct dwarf2_cu *origin_cu; |
13535 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
13536 | |
13537 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13538 | if (!attr) | |
13539 | return; | |
13540 | ||
cd02d79d PA |
13541 | /* Note that following die references may follow to a die in a |
13542 | different cu. */ | |
13543 | ||
13544 | origin_cu = cu; | |
13545 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
13546 | ||
13547 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
13548 | symbols in. */ | |
13549 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
13550 | origin_cu->list_in_scope = cu->list_in_scope; | |
13551 | ||
edb3359d DJ |
13552 | if (die->tag != origin_die->tag |
13553 | && !(die->tag == DW_TAG_inlined_subroutine | |
13554 | && origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 13555 | complaint (_("DIE %s and its abstract origin %s have different tags"), |
9d8780f0 SM |
13556 | sect_offset_str (die->sect_off), |
13557 | sect_offset_str (origin_die->sect_off)); | |
d389af10 | 13558 | |
791afaa2 | 13559 | std::vector<sect_offset> offsets; |
d389af10 | 13560 | |
3ea89b92 PMR |
13561 | for (child_die = die->child; |
13562 | child_die && child_die->tag; | |
13563 | child_die = sibling_die (child_die)) | |
13564 | { | |
13565 | struct die_info *child_origin_die; | |
13566 | struct dwarf2_cu *child_origin_cu; | |
13567 | ||
13568 | /* We are trying to process concrete instance entries: | |
216f72a1 | 13569 | DW_TAG_call_site DIEs indeed have a DW_AT_abstract_origin tag, but |
3ea89b92 PMR |
13570 | it's not relevant to our analysis here. i.e. detecting DIEs that are |
13571 | present in the abstract instance but not referenced in the concrete | |
13572 | one. */ | |
216f72a1 JK |
13573 | if (child_die->tag == DW_TAG_call_site |
13574 | || child_die->tag == DW_TAG_GNU_call_site) | |
3ea89b92 PMR |
13575 | continue; |
13576 | ||
c38f313d DJ |
13577 | /* For each CHILD_DIE, find the corresponding child of |
13578 | ORIGIN_DIE. If there is more than one layer of | |
13579 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
13580 | but GCC versions at least through 4.4 generate this (GCC PR | |
13581 | 40573). */ | |
3ea89b92 PMR |
13582 | child_origin_die = child_die; |
13583 | child_origin_cu = cu; | |
c38f313d DJ |
13584 | while (1) |
13585 | { | |
cd02d79d PA |
13586 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
13587 | child_origin_cu); | |
c38f313d DJ |
13588 | if (attr == NULL) |
13589 | break; | |
cd02d79d PA |
13590 | child_origin_die = follow_die_ref (child_origin_die, attr, |
13591 | &child_origin_cu); | |
c38f313d DJ |
13592 | } |
13593 | ||
d389af10 JK |
13594 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
13595 | counterpart may exist. */ | |
c38f313d | 13596 | if (child_origin_die != child_die) |
d389af10 | 13597 | { |
edb3359d DJ |
13598 | if (child_die->tag != child_origin_die->tag |
13599 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
13600 | && child_origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 13601 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 13602 | "different tags"), |
9d8780f0 SM |
13603 | sect_offset_str (child_die->sect_off), |
13604 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 13605 | if (child_origin_die->parent != origin_die) |
b98664d3 | 13606 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 13607 | "different parents"), |
9d8780f0 SM |
13608 | sect_offset_str (child_die->sect_off), |
13609 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 13610 | else |
791afaa2 | 13611 | offsets.push_back (child_origin_die->sect_off); |
d389af10 | 13612 | } |
d389af10 | 13613 | } |
791afaa2 TT |
13614 | std::sort (offsets.begin (), offsets.end ()); |
13615 | sect_offset *offsets_end = offsets.data () + offsets.size (); | |
13616 | for (offsetp = offsets.data () + 1; offsetp < offsets_end; offsetp++) | |
9c541725 | 13617 | if (offsetp[-1] == *offsetp) |
b98664d3 | 13618 | complaint (_("Multiple children of DIE %s refer " |
9d8780f0 SM |
13619 | "to DIE %s as their abstract origin"), |
13620 | sect_offset_str (die->sect_off), sect_offset_str (*offsetp)); | |
d389af10 | 13621 | |
791afaa2 | 13622 | offsetp = offsets.data (); |
d389af10 JK |
13623 | origin_child_die = origin_die->child; |
13624 | while (origin_child_die && origin_child_die->tag) | |
13625 | { | |
13626 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 | 13627 | while (offsetp < offsets_end |
9c541725 | 13628 | && *offsetp < origin_child_die->sect_off) |
d389af10 | 13629 | offsetp++; |
b64f50a1 | 13630 | if (offsetp >= offsets_end |
9c541725 | 13631 | || *offsetp > origin_child_die->sect_off) |
d389af10 | 13632 | { |
adde2bff DE |
13633 | /* Found that ORIGIN_CHILD_DIE is really not referenced. |
13634 | Check whether we're already processing ORIGIN_CHILD_DIE. | |
13635 | This can happen with mutually referenced abstract_origins. | |
13636 | PR 16581. */ | |
13637 | if (!origin_child_die->in_process) | |
13638 | process_die (origin_child_die, origin_cu); | |
d389af10 JK |
13639 | } |
13640 | origin_child_die = sibling_die (origin_child_die); | |
13641 | } | |
cd02d79d | 13642 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
d389af10 JK |
13643 | } |
13644 | ||
c906108c | 13645 | static void |
e7c27a73 | 13646 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13647 | { |
518817b3 | 13648 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 13649 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
fe978cb0 | 13650 | struct context_stack *newobj; |
c906108c SS |
13651 | CORE_ADDR lowpc; |
13652 | CORE_ADDR highpc; | |
13653 | struct die_info *child_die; | |
edb3359d | 13654 | struct attribute *attr, *call_line, *call_file; |
15d034d0 | 13655 | const char *name; |
e142c38c | 13656 | CORE_ADDR baseaddr; |
801e3a5b | 13657 | struct block *block; |
edb3359d | 13658 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
2f4732b0 | 13659 | std::vector<struct symbol *> template_args; |
34eaf542 | 13660 | struct template_symbol *templ_func = NULL; |
edb3359d DJ |
13661 | |
13662 | if (inlined_func) | |
13663 | { | |
13664 | /* If we do not have call site information, we can't show the | |
13665 | caller of this inlined function. That's too confusing, so | |
13666 | only use the scope for local variables. */ | |
13667 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
13668 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
13669 | if (call_line == NULL || call_file == NULL) | |
13670 | { | |
13671 | read_lexical_block_scope (die, cu); | |
13672 | return; | |
13673 | } | |
13674 | } | |
c906108c | 13675 | |
e142c38c DJ |
13676 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
13677 | ||
94af9270 | 13678 | name = dwarf2_name (die, cu); |
c906108c | 13679 | |
e8d05480 JB |
13680 | /* Ignore functions with missing or empty names. These are actually |
13681 | illegal according to the DWARF standard. */ | |
13682 | if (name == NULL) | |
13683 | { | |
b98664d3 | 13684 | complaint (_("missing name for subprogram DIE at %s"), |
9d8780f0 | 13685 | sect_offset_str (die->sect_off)); |
e8d05480 JB |
13686 | return; |
13687 | } | |
13688 | ||
13689 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
3a2b436a | 13690 | if (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL) |
e385593e | 13691 | <= PC_BOUNDS_INVALID) |
e8d05480 | 13692 | { |
ae4d0c03 PM |
13693 | attr = dwarf2_attr (die, DW_AT_external, cu); |
13694 | if (!attr || !DW_UNSND (attr)) | |
b98664d3 | 13695 | complaint (_("cannot get low and high bounds " |
9d8780f0 SM |
13696 | "for subprogram DIE at %s"), |
13697 | sect_offset_str (die->sect_off)); | |
e8d05480 JB |
13698 | return; |
13699 | } | |
c906108c | 13700 | |
3e29f34a MR |
13701 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13702 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13703 | |
34eaf542 TT |
13704 | /* If we have any template arguments, then we must allocate a |
13705 | different sort of symbol. */ | |
13706 | for (child_die = die->child; child_die; child_die = sibling_die (child_die)) | |
13707 | { | |
13708 | if (child_die->tag == DW_TAG_template_type_param | |
13709 | || child_die->tag == DW_TAG_template_value_param) | |
13710 | { | |
e623cf5d | 13711 | templ_func = allocate_template_symbol (objfile); |
cf724bc9 | 13712 | templ_func->subclass = SYMBOL_TEMPLATE; |
34eaf542 TT |
13713 | break; |
13714 | } | |
13715 | } | |
13716 | ||
804d2729 | 13717 | newobj = cu->builder->push_context (0, lowpc); |
5e2db402 TT |
13718 | newobj->name = new_symbol (die, read_type_die (die, cu), cu, |
13719 | (struct symbol *) templ_func); | |
4c2df51b | 13720 | |
4cecd739 DJ |
13721 | /* If there is a location expression for DW_AT_frame_base, record |
13722 | it. */ | |
e142c38c | 13723 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 13724 | if (attr) |
fe978cb0 | 13725 | dwarf2_symbol_mark_computed (attr, newobj->name, cu, 1); |
4c2df51b | 13726 | |
63e43d3a PMR |
13727 | /* If there is a location for the static link, record it. */ |
13728 | newobj->static_link = NULL; | |
13729 | attr = dwarf2_attr (die, DW_AT_static_link, cu); | |
13730 | if (attr) | |
13731 | { | |
224c3ddb SM |
13732 | newobj->static_link |
13733 | = XOBNEW (&objfile->objfile_obstack, struct dynamic_prop); | |
63e43d3a PMR |
13734 | attr_to_dynamic_prop (attr, die, cu, newobj->static_link); |
13735 | } | |
13736 | ||
804d2729 | 13737 | cu->list_in_scope = cu->builder->get_local_symbols (); |
c906108c | 13738 | |
639d11d3 | 13739 | if (die->child != NULL) |
c906108c | 13740 | { |
639d11d3 | 13741 | child_die = die->child; |
c906108c SS |
13742 | while (child_die && child_die->tag) |
13743 | { | |
34eaf542 TT |
13744 | if (child_die->tag == DW_TAG_template_type_param |
13745 | || child_die->tag == DW_TAG_template_value_param) | |
13746 | { | |
13747 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
13748 | ||
f1078f66 | 13749 | if (arg != NULL) |
2f4732b0 | 13750 | template_args.push_back (arg); |
34eaf542 TT |
13751 | } |
13752 | else | |
13753 | process_die (child_die, cu); | |
c906108c SS |
13754 | child_die = sibling_die (child_die); |
13755 | } | |
13756 | } | |
13757 | ||
d389af10 JK |
13758 | inherit_abstract_dies (die, cu); |
13759 | ||
4a811a97 UW |
13760 | /* If we have a DW_AT_specification, we might need to import using |
13761 | directives from the context of the specification DIE. See the | |
13762 | comment in determine_prefix. */ | |
13763 | if (cu->language == language_cplus | |
13764 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
13765 | { | |
13766 | struct dwarf2_cu *spec_cu = cu; | |
13767 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
13768 | ||
13769 | while (spec_die) | |
13770 | { | |
13771 | child_die = spec_die->child; | |
13772 | while (child_die && child_die->tag) | |
13773 | { | |
13774 | if (child_die->tag == DW_TAG_imported_module) | |
13775 | process_die (child_die, spec_cu); | |
13776 | child_die = sibling_die (child_die); | |
13777 | } | |
13778 | ||
13779 | /* In some cases, GCC generates specification DIEs that | |
13780 | themselves contain DW_AT_specification attributes. */ | |
13781 | spec_die = die_specification (spec_die, &spec_cu); | |
13782 | } | |
13783 | } | |
13784 | ||
804d2729 | 13785 | struct context_stack cstk = cu->builder->pop_context (); |
c906108c | 13786 | /* Make a block for the local symbols within. */ |
804d2729 TT |
13787 | block = cu->builder->finish_block (cstk.name, cstk.old_blocks, |
13788 | cstk.static_link, lowpc, highpc); | |
801e3a5b | 13789 | |
df8a16a1 | 13790 | /* For C++, set the block's scope. */ |
45280282 IB |
13791 | if ((cu->language == language_cplus |
13792 | || cu->language == language_fortran | |
c44af4eb TT |
13793 | || cu->language == language_d |
13794 | || cu->language == language_rust) | |
4d4ec4e5 | 13795 | && cu->processing_has_namespace_info) |
195a3f6c TT |
13796 | block_set_scope (block, determine_prefix (die, cu), |
13797 | &objfile->objfile_obstack); | |
df8a16a1 | 13798 | |
801e3a5b JB |
13799 | /* If we have address ranges, record them. */ |
13800 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 13801 | |
a60f3166 | 13802 | gdbarch_make_symbol_special (gdbarch, cstk.name, objfile); |
3e29f34a | 13803 | |
34eaf542 | 13804 | /* Attach template arguments to function. */ |
2f4732b0 | 13805 | if (!template_args.empty ()) |
34eaf542 TT |
13806 | { |
13807 | gdb_assert (templ_func != NULL); | |
13808 | ||
2f4732b0 | 13809 | templ_func->n_template_arguments = template_args.size (); |
34eaf542 | 13810 | templ_func->template_arguments |
8d749320 SM |
13811 | = XOBNEWVEC (&objfile->objfile_obstack, struct symbol *, |
13812 | templ_func->n_template_arguments); | |
34eaf542 | 13813 | memcpy (templ_func->template_arguments, |
2f4732b0 | 13814 | template_args.data (), |
34eaf542 | 13815 | (templ_func->n_template_arguments * sizeof (struct symbol *))); |
3e1d3d8c TT |
13816 | |
13817 | /* Make sure that the symtab is set on the new symbols. Even | |
13818 | though they don't appear in this symtab directly, other parts | |
13819 | of gdb assume that symbols do, and this is reasonably | |
13820 | true. */ | |
8634679f | 13821 | for (symbol *sym : template_args) |
3e1d3d8c | 13822 | symbol_set_symtab (sym, symbol_symtab (templ_func)); |
34eaf542 TT |
13823 | } |
13824 | ||
208d8187 JB |
13825 | /* In C++, we can have functions nested inside functions (e.g., when |
13826 | a function declares a class that has methods). This means that | |
13827 | when we finish processing a function scope, we may need to go | |
13828 | back to building a containing block's symbol lists. */ | |
804d2729 TT |
13829 | *cu->builder->get_local_symbols () = cstk.locals; |
13830 | cu->builder->set_local_using_directives (cstk.local_using_directives); | |
208d8187 | 13831 | |
921e78cf JB |
13832 | /* If we've finished processing a top-level function, subsequent |
13833 | symbols go in the file symbol list. */ | |
804d2729 TT |
13834 | if (cu->builder->outermost_context_p ()) |
13835 | cu->list_in_scope = cu->builder->get_file_symbols (); | |
c906108c SS |
13836 | } |
13837 | ||
13838 | /* Process all the DIES contained within a lexical block scope. Start | |
13839 | a new scope, process the dies, and then close the scope. */ | |
13840 | ||
13841 | static void | |
e7c27a73 | 13842 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13843 | { |
518817b3 | 13844 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 13845 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
13846 | CORE_ADDR lowpc, highpc; |
13847 | struct die_info *child_die; | |
e142c38c DJ |
13848 | CORE_ADDR baseaddr; |
13849 | ||
13850 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
13851 | |
13852 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
13853 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
13854 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 13855 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 13856 | describe ranges. */ |
e385593e JK |
13857 | switch (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
13858 | { | |
13859 | case PC_BOUNDS_NOT_PRESENT: | |
13860 | /* DW_TAG_lexical_block has no attributes, process its children as if | |
13861 | there was no wrapping by that DW_TAG_lexical_block. | |
13862 | GCC does no longer produces such DWARF since GCC r224161. */ | |
13863 | for (child_die = die->child; | |
13864 | child_die != NULL && child_die->tag; | |
13865 | child_die = sibling_die (child_die)) | |
13866 | process_die (child_die, cu); | |
13867 | return; | |
13868 | case PC_BOUNDS_INVALID: | |
13869 | return; | |
13870 | } | |
3e29f34a MR |
13871 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13872 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13873 | |
804d2729 | 13874 | cu->builder->push_context (0, lowpc); |
639d11d3 | 13875 | if (die->child != NULL) |
c906108c | 13876 | { |
639d11d3 | 13877 | child_die = die->child; |
c906108c SS |
13878 | while (child_die && child_die->tag) |
13879 | { | |
e7c27a73 | 13880 | process_die (child_die, cu); |
c906108c SS |
13881 | child_die = sibling_die (child_die); |
13882 | } | |
13883 | } | |
3ea89b92 | 13884 | inherit_abstract_dies (die, cu); |
804d2729 | 13885 | struct context_stack cstk = cu->builder->pop_context (); |
c906108c | 13886 | |
804d2729 TT |
13887 | if (*cu->builder->get_local_symbols () != NULL |
13888 | || (*cu->builder->get_local_using_directives ()) != NULL) | |
c906108c | 13889 | { |
801e3a5b | 13890 | struct block *block |
804d2729 TT |
13891 | = cu->builder->finish_block (0, cstk.old_blocks, NULL, |
13892 | cstk.start_addr, highpc); | |
801e3a5b JB |
13893 | |
13894 | /* Note that recording ranges after traversing children, as we | |
13895 | do here, means that recording a parent's ranges entails | |
13896 | walking across all its children's ranges as they appear in | |
13897 | the address map, which is quadratic behavior. | |
13898 | ||
13899 | It would be nicer to record the parent's ranges before | |
13900 | traversing its children, simply overriding whatever you find | |
13901 | there. But since we don't even decide whether to create a | |
13902 | block until after we've traversed its children, that's hard | |
13903 | to do. */ | |
13904 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c | 13905 | } |
804d2729 TT |
13906 | *cu->builder->get_local_symbols () = cstk.locals; |
13907 | cu->builder->set_local_using_directives (cstk.local_using_directives); | |
c906108c SS |
13908 | } |
13909 | ||
216f72a1 | 13910 | /* Read in DW_TAG_call_site and insert it to CU->call_site_htab. */ |
96408a79 SA |
13911 | |
13912 | static void | |
13913 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
13914 | { | |
518817b3 | 13915 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
96408a79 SA |
13916 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
13917 | CORE_ADDR pc, baseaddr; | |
13918 | struct attribute *attr; | |
13919 | struct call_site *call_site, call_site_local; | |
13920 | void **slot; | |
13921 | int nparams; | |
13922 | struct die_info *child_die; | |
13923 | ||
13924 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
13925 | ||
216f72a1 JK |
13926 | attr = dwarf2_attr (die, DW_AT_call_return_pc, cu); |
13927 | if (attr == NULL) | |
13928 | { | |
13929 | /* This was a pre-DWARF-5 GNU extension alias | |
13930 | for DW_AT_call_return_pc. */ | |
13931 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
13932 | } | |
96408a79 SA |
13933 | if (!attr) |
13934 | { | |
b98664d3 | 13935 | complaint (_("missing DW_AT_call_return_pc for DW_TAG_call_site " |
9d8780f0 SM |
13936 | "DIE %s [in module %s]"), |
13937 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13938 | return; |
13939 | } | |
31aa7e4e | 13940 | pc = attr_value_as_address (attr) + baseaddr; |
3e29f34a | 13941 | pc = gdbarch_adjust_dwarf2_addr (gdbarch, pc); |
96408a79 SA |
13942 | |
13943 | if (cu->call_site_htab == NULL) | |
13944 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
13945 | NULL, &objfile->objfile_obstack, | |
13946 | hashtab_obstack_allocate, NULL); | |
13947 | call_site_local.pc = pc; | |
13948 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
13949 | if (*slot != NULL) | |
13950 | { | |
b98664d3 | 13951 | complaint (_("Duplicate PC %s for DW_TAG_call_site " |
9d8780f0 SM |
13952 | "DIE %s [in module %s]"), |
13953 | paddress (gdbarch, pc), sect_offset_str (die->sect_off), | |
4262abfb | 13954 | objfile_name (objfile)); |
96408a79 SA |
13955 | return; |
13956 | } | |
13957 | ||
13958 | /* Count parameters at the caller. */ | |
13959 | ||
13960 | nparams = 0; | |
13961 | for (child_die = die->child; child_die && child_die->tag; | |
13962 | child_die = sibling_die (child_die)) | |
13963 | { | |
216f72a1 JK |
13964 | if (child_die->tag != DW_TAG_call_site_parameter |
13965 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 | 13966 | { |
b98664d3 | 13967 | complaint (_("Tag %d is not DW_TAG_call_site_parameter in " |
9d8780f0 SM |
13968 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13969 | child_die->tag, sect_offset_str (child_die->sect_off), | |
4262abfb | 13970 | objfile_name (objfile)); |
96408a79 SA |
13971 | continue; |
13972 | } | |
13973 | ||
13974 | nparams++; | |
13975 | } | |
13976 | ||
224c3ddb SM |
13977 | call_site |
13978 | = ((struct call_site *) | |
13979 | obstack_alloc (&objfile->objfile_obstack, | |
13980 | sizeof (*call_site) | |
13981 | + (sizeof (*call_site->parameter) * (nparams - 1)))); | |
96408a79 SA |
13982 | *slot = call_site; |
13983 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
13984 | call_site->pc = pc; | |
13985 | ||
216f72a1 JK |
13986 | if (dwarf2_flag_true_p (die, DW_AT_call_tail_call, cu) |
13987 | || dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
96408a79 SA |
13988 | { |
13989 | struct die_info *func_die; | |
13990 | ||
13991 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
13992 | for (func_die = die->parent; | |
13993 | func_die && func_die->tag != DW_TAG_subprogram | |
13994 | && func_die->tag != DW_TAG_subroutine_type; | |
13995 | func_die = func_die->parent); | |
13996 | ||
216f72a1 JK |
13997 | /* DW_AT_call_all_calls is a superset |
13998 | of DW_AT_call_all_tail_calls. */ | |
96408a79 | 13999 | if (func_die |
216f72a1 | 14000 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_calls, cu) |
96408a79 | 14001 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) |
216f72a1 | 14002 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_tail_calls, cu) |
96408a79 SA |
14003 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) |
14004 | { | |
14005 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
14006 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
14007 | both the initial caller containing the real return address PC and | |
14008 | the final callee containing the current PC of a chain of tail | |
14009 | calls do not need to have the tail call list complete. But any | |
14010 | function candidate for a virtual tail call frame searched via | |
14011 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
14012 | determined unambiguously. */ | |
14013 | } | |
14014 | else | |
14015 | { | |
14016 | struct type *func_type = NULL; | |
14017 | ||
14018 | if (func_die) | |
14019 | func_type = get_die_type (func_die, cu); | |
14020 | if (func_type != NULL) | |
14021 | { | |
14022 | gdb_assert (TYPE_CODE (func_type) == TYPE_CODE_FUNC); | |
14023 | ||
14024 | /* Enlist this call site to the function. */ | |
14025 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
14026 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
14027 | } | |
14028 | else | |
b98664d3 | 14029 | complaint (_("Cannot find function owning DW_TAG_call_site " |
9d8780f0 SM |
14030 | "DIE %s [in module %s]"), |
14031 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
14032 | } |
14033 | } | |
14034 | ||
216f72a1 JK |
14035 | attr = dwarf2_attr (die, DW_AT_call_target, cu); |
14036 | if (attr == NULL) | |
14037 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
14038 | if (attr == NULL) | |
14039 | attr = dwarf2_attr (die, DW_AT_call_origin, cu); | |
96408a79 | 14040 | if (attr == NULL) |
216f72a1 JK |
14041 | { |
14042 | /* This was a pre-DWARF-5 GNU extension alias for DW_AT_call_origin. */ | |
14043 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
14044 | } | |
96408a79 SA |
14045 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); |
14046 | if (!attr || (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0)) | |
14047 | /* Keep NULL DWARF_BLOCK. */; | |
14048 | else if (attr_form_is_block (attr)) | |
14049 | { | |
14050 | struct dwarf2_locexpr_baton *dlbaton; | |
14051 | ||
8d749320 | 14052 | dlbaton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
96408a79 SA |
14053 | dlbaton->data = DW_BLOCK (attr)->data; |
14054 | dlbaton->size = DW_BLOCK (attr)->size; | |
14055 | dlbaton->per_cu = cu->per_cu; | |
14056 | ||
14057 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
14058 | } | |
7771576e | 14059 | else if (attr_form_is_ref (attr)) |
96408a79 | 14060 | { |
96408a79 SA |
14061 | struct dwarf2_cu *target_cu = cu; |
14062 | struct die_info *target_die; | |
14063 | ||
ac9ec31b | 14064 | target_die = follow_die_ref (die, attr, &target_cu); |
518817b3 | 14065 | gdb_assert (target_cu->per_cu->dwarf2_per_objfile->objfile == objfile); |
96408a79 SA |
14066 | if (die_is_declaration (target_die, target_cu)) |
14067 | { | |
7d45c7c3 | 14068 | const char *target_physname; |
9112db09 JK |
14069 | |
14070 | /* Prefer the mangled name; otherwise compute the demangled one. */ | |
73b9be8b | 14071 | target_physname = dw2_linkage_name (target_die, target_cu); |
7d45c7c3 | 14072 | if (target_physname == NULL) |
9112db09 | 14073 | target_physname = dwarf2_physname (NULL, target_die, target_cu); |
96408a79 | 14074 | if (target_physname == NULL) |
b98664d3 | 14075 | complaint (_("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
14076 | "physname, for referencing DIE %s [in module %s]"), |
14077 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 14078 | else |
7d455152 | 14079 | SET_FIELD_PHYSNAME (call_site->target, target_physname); |
96408a79 SA |
14080 | } |
14081 | else | |
14082 | { | |
14083 | CORE_ADDR lowpc; | |
14084 | ||
14085 | /* DW_AT_entry_pc should be preferred. */ | |
3a2b436a | 14086 | if (dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL) |
e385593e | 14087 | <= PC_BOUNDS_INVALID) |
b98664d3 | 14088 | complaint (_("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
14089 | "low pc, for referencing DIE %s [in module %s]"), |
14090 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 14091 | else |
3e29f34a MR |
14092 | { |
14093 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); | |
14094 | SET_FIELD_PHYSADDR (call_site->target, lowpc); | |
14095 | } | |
96408a79 SA |
14096 | } |
14097 | } | |
14098 | else | |
b98664d3 | 14099 | complaint (_("DW_TAG_call_site DW_AT_call_target is neither " |
9d8780f0 SM |
14100 | "block nor reference, for DIE %s [in module %s]"), |
14101 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
14102 | |
14103 | call_site->per_cu = cu->per_cu; | |
14104 | ||
14105 | for (child_die = die->child; | |
14106 | child_die && child_die->tag; | |
14107 | child_die = sibling_die (child_die)) | |
14108 | { | |
96408a79 | 14109 | struct call_site_parameter *parameter; |
1788b2d3 | 14110 | struct attribute *loc, *origin; |
96408a79 | 14111 | |
216f72a1 JK |
14112 | if (child_die->tag != DW_TAG_call_site_parameter |
14113 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 SA |
14114 | { |
14115 | /* Already printed the complaint above. */ | |
14116 | continue; | |
14117 | } | |
14118 | ||
14119 | gdb_assert (call_site->parameter_count < nparams); | |
14120 | parameter = &call_site->parameter[call_site->parameter_count]; | |
14121 | ||
1788b2d3 JK |
14122 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
14123 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
216f72a1 | 14124 | register is contained in DW_AT_call_value. */ |
96408a79 | 14125 | |
24c5c679 | 14126 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
216f72a1 JK |
14127 | origin = dwarf2_attr (child_die, DW_AT_call_parameter, cu); |
14128 | if (origin == NULL) | |
14129 | { | |
14130 | /* This was a pre-DWARF-5 GNU extension alias | |
14131 | for DW_AT_call_parameter. */ | |
14132 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); | |
14133 | } | |
7771576e | 14134 | if (loc == NULL && origin != NULL && attr_form_is_ref (origin)) |
1788b2d3 | 14135 | { |
1788b2d3 | 14136 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; |
9c541725 PA |
14137 | |
14138 | sect_offset sect_off | |
14139 | = (sect_offset) dwarf2_get_ref_die_offset (origin); | |
14140 | if (!offset_in_cu_p (&cu->header, sect_off)) | |
d76b7dbc JK |
14141 | { |
14142 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
14143 | binding can be done only inside one CU. Such referenced DIE | |
14144 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
b98664d3 | 14145 | complaint (_("DW_AT_call_parameter offset is not in CU for " |
9d8780f0 SM |
14146 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14147 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14148 | objfile_name (objfile)); |
d76b7dbc JK |
14149 | continue; |
14150 | } | |
9c541725 PA |
14151 | parameter->u.param_cu_off |
14152 | = (cu_offset) (sect_off - cu->header.sect_off); | |
1788b2d3 JK |
14153 | } |
14154 | else if (loc == NULL || origin != NULL || !attr_form_is_block (loc)) | |
96408a79 | 14155 | { |
b98664d3 | 14156 | complaint (_("No DW_FORM_block* DW_AT_location for " |
9d8780f0 SM |
14157 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14158 | sect_offset_str (child_die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
14159 | continue; |
14160 | } | |
24c5c679 | 14161 | else |
96408a79 | 14162 | { |
24c5c679 JK |
14163 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
14164 | (DW_BLOCK (loc)->data, &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size]); | |
14165 | if (parameter->u.dwarf_reg != -1) | |
14166 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
14167 | else if (dwarf_block_to_sp_offset (gdbarch, DW_BLOCK (loc)->data, | |
14168 | &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size], | |
14169 | ¶meter->u.fb_offset)) | |
14170 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
14171 | else | |
14172 | { | |
b98664d3 | 14173 | complaint (_("Only single DW_OP_reg or DW_OP_fbreg is supported " |
24c5c679 | 14174 | "for DW_FORM_block* DW_AT_location is supported for " |
9d8780f0 | 14175 | "DW_TAG_call_site child DIE %s " |
24c5c679 | 14176 | "[in module %s]"), |
9d8780f0 | 14177 | sect_offset_str (child_die->sect_off), |
9c541725 | 14178 | objfile_name (objfile)); |
24c5c679 JK |
14179 | continue; |
14180 | } | |
96408a79 SA |
14181 | } |
14182 | ||
216f72a1 JK |
14183 | attr = dwarf2_attr (child_die, DW_AT_call_value, cu); |
14184 | if (attr == NULL) | |
14185 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
96408a79 SA |
14186 | if (!attr_form_is_block (attr)) |
14187 | { | |
b98664d3 | 14188 | complaint (_("No DW_FORM_block* DW_AT_call_value for " |
9d8780f0 SM |
14189 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14190 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14191 | objfile_name (objfile)); |
96408a79 SA |
14192 | continue; |
14193 | } | |
14194 | parameter->value = DW_BLOCK (attr)->data; | |
14195 | parameter->value_size = DW_BLOCK (attr)->size; | |
14196 | ||
14197 | /* Parameters are not pre-cleared by memset above. */ | |
14198 | parameter->data_value = NULL; | |
14199 | parameter->data_value_size = 0; | |
14200 | call_site->parameter_count++; | |
14201 | ||
216f72a1 JK |
14202 | attr = dwarf2_attr (child_die, DW_AT_call_data_value, cu); |
14203 | if (attr == NULL) | |
14204 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
96408a79 SA |
14205 | if (attr) |
14206 | { | |
14207 | if (!attr_form_is_block (attr)) | |
b98664d3 | 14208 | complaint (_("No DW_FORM_block* DW_AT_call_data_value for " |
9d8780f0 SM |
14209 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14210 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14211 | objfile_name (objfile)); |
96408a79 SA |
14212 | else |
14213 | { | |
14214 | parameter->data_value = DW_BLOCK (attr)->data; | |
14215 | parameter->data_value_size = DW_BLOCK (attr)->size; | |
14216 | } | |
14217 | } | |
14218 | } | |
14219 | } | |
14220 | ||
71a3c369 TT |
14221 | /* Helper function for read_variable. If DIE represents a virtual |
14222 | table, then return the type of the concrete object that is | |
14223 | associated with the virtual table. Otherwise, return NULL. */ | |
14224 | ||
14225 | static struct type * | |
14226 | rust_containing_type (struct die_info *die, struct dwarf2_cu *cu) | |
14227 | { | |
14228 | struct attribute *attr = dwarf2_attr (die, DW_AT_type, cu); | |
14229 | if (attr == NULL) | |
14230 | return NULL; | |
14231 | ||
14232 | /* Find the type DIE. */ | |
14233 | struct die_info *type_die = NULL; | |
14234 | struct dwarf2_cu *type_cu = cu; | |
14235 | ||
14236 | if (attr_form_is_ref (attr)) | |
14237 | type_die = follow_die_ref (die, attr, &type_cu); | |
14238 | if (type_die == NULL) | |
14239 | return NULL; | |
14240 | ||
14241 | if (dwarf2_attr (type_die, DW_AT_containing_type, type_cu) == NULL) | |
14242 | return NULL; | |
14243 | return die_containing_type (type_die, type_cu); | |
14244 | } | |
14245 | ||
14246 | /* Read a variable (DW_TAG_variable) DIE and create a new symbol. */ | |
14247 | ||
14248 | static void | |
14249 | read_variable (struct die_info *die, struct dwarf2_cu *cu) | |
14250 | { | |
14251 | struct rust_vtable_symbol *storage = NULL; | |
14252 | ||
14253 | if (cu->language == language_rust) | |
14254 | { | |
14255 | struct type *containing_type = rust_containing_type (die, cu); | |
14256 | ||
14257 | if (containing_type != NULL) | |
14258 | { | |
518817b3 | 14259 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
71a3c369 TT |
14260 | |
14261 | storage = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
14262 | struct rust_vtable_symbol); | |
14263 | initialize_objfile_symbol (storage); | |
14264 | storage->concrete_type = containing_type; | |
cf724bc9 | 14265 | storage->subclass = SYMBOL_RUST_VTABLE; |
71a3c369 TT |
14266 | } |
14267 | } | |
14268 | ||
e4a62c65 TV |
14269 | struct symbol *res = new_symbol (die, NULL, cu, storage); |
14270 | struct attribute *abstract_origin | |
14271 | = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
14272 | struct attribute *loc = dwarf2_attr (die, DW_AT_location, cu); | |
14273 | if (res == NULL && loc && abstract_origin) | |
14274 | { | |
14275 | /* We have a variable without a name, but with a location and an abstract | |
14276 | origin. This may be a concrete instance of an abstract variable | |
14277 | referenced from an DW_OP_GNU_variable_value, so save it to find it back | |
14278 | later. */ | |
14279 | struct dwarf2_cu *origin_cu = cu; | |
14280 | struct die_info *origin_die | |
14281 | = follow_die_ref (die, abstract_origin, &origin_cu); | |
14282 | dwarf2_per_objfile *dpo = cu->per_cu->dwarf2_per_objfile; | |
14283 | dpo->abstract_to_concrete[origin_die].push_back (die); | |
14284 | } | |
71a3c369 TT |
14285 | } |
14286 | ||
43988095 JK |
14287 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET |
14288 | reading .debug_rnglists. | |
14289 | Callback's type should be: | |
14290 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
14291 | Return true if the attributes are present and valid, otherwise, | |
14292 | return false. */ | |
14293 | ||
14294 | template <typename Callback> | |
14295 | static bool | |
14296 | dwarf2_rnglists_process (unsigned offset, struct dwarf2_cu *cu, | |
14297 | Callback &&callback) | |
14298 | { | |
ed2dc618 | 14299 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 14300 | = cu->per_cu->dwarf2_per_objfile; |
ed2dc618 | 14301 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
43988095 | 14302 | bfd *obfd = objfile->obfd; |
43988095 JK |
14303 | /* Base address selection entry. */ |
14304 | CORE_ADDR base; | |
14305 | int found_base; | |
43988095 | 14306 | const gdb_byte *buffer; |
43988095 JK |
14307 | CORE_ADDR baseaddr; |
14308 | bool overflow = false; | |
14309 | ||
14310 | found_base = cu->base_known; | |
14311 | base = cu->base_address; | |
14312 | ||
14313 | dwarf2_read_section (objfile, &dwarf2_per_objfile->rnglists); | |
14314 | if (offset >= dwarf2_per_objfile->rnglists.size) | |
14315 | { | |
b98664d3 | 14316 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43988095 JK |
14317 | offset); |
14318 | return false; | |
14319 | } | |
14320 | buffer = dwarf2_per_objfile->rnglists.buffer + offset; | |
14321 | ||
14322 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
14323 | ||
14324 | while (1) | |
14325 | { | |
7814882a JK |
14326 | /* Initialize it due to a false compiler warning. */ |
14327 | CORE_ADDR range_beginning = 0, range_end = 0; | |
43988095 JK |
14328 | const gdb_byte *buf_end = (dwarf2_per_objfile->rnglists.buffer |
14329 | + dwarf2_per_objfile->rnglists.size); | |
14330 | unsigned int bytes_read; | |
14331 | ||
14332 | if (buffer == buf_end) | |
14333 | { | |
14334 | overflow = true; | |
14335 | break; | |
14336 | } | |
14337 | const auto rlet = static_cast<enum dwarf_range_list_entry>(*buffer++); | |
14338 | switch (rlet) | |
14339 | { | |
14340 | case DW_RLE_end_of_list: | |
14341 | break; | |
14342 | case DW_RLE_base_address: | |
14343 | if (buffer + cu->header.addr_size > buf_end) | |
14344 | { | |
14345 | overflow = true; | |
14346 | break; | |
14347 | } | |
14348 | base = read_address (obfd, buffer, cu, &bytes_read); | |
14349 | found_base = 1; | |
14350 | buffer += bytes_read; | |
14351 | break; | |
14352 | case DW_RLE_start_length: | |
14353 | if (buffer + cu->header.addr_size > buf_end) | |
14354 | { | |
14355 | overflow = true; | |
14356 | break; | |
14357 | } | |
14358 | range_beginning = read_address (obfd, buffer, cu, &bytes_read); | |
14359 | buffer += bytes_read; | |
14360 | range_end = (range_beginning | |
14361 | + read_unsigned_leb128 (obfd, buffer, &bytes_read)); | |
14362 | buffer += bytes_read; | |
14363 | if (buffer > buf_end) | |
14364 | { | |
14365 | overflow = true; | |
14366 | break; | |
14367 | } | |
14368 | break; | |
14369 | case DW_RLE_offset_pair: | |
14370 | range_beginning = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14371 | buffer += bytes_read; | |
14372 | if (buffer > buf_end) | |
14373 | { | |
14374 | overflow = true; | |
14375 | break; | |
14376 | } | |
14377 | range_end = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14378 | buffer += bytes_read; | |
14379 | if (buffer > buf_end) | |
14380 | { | |
14381 | overflow = true; | |
14382 | break; | |
14383 | } | |
14384 | break; | |
14385 | case DW_RLE_start_end: | |
14386 | if (buffer + 2 * cu->header.addr_size > buf_end) | |
14387 | { | |
14388 | overflow = true; | |
14389 | break; | |
14390 | } | |
14391 | range_beginning = read_address (obfd, buffer, cu, &bytes_read); | |
14392 | buffer += bytes_read; | |
14393 | range_end = read_address (obfd, buffer, cu, &bytes_read); | |
14394 | buffer += bytes_read; | |
14395 | break; | |
14396 | default: | |
b98664d3 | 14397 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
14398 | return false; |
14399 | } | |
14400 | if (rlet == DW_RLE_end_of_list || overflow) | |
14401 | break; | |
14402 | if (rlet == DW_RLE_base_address) | |
14403 | continue; | |
14404 | ||
14405 | if (!found_base) | |
14406 | { | |
14407 | /* We have no valid base address for the ranges | |
14408 | data. */ | |
b98664d3 | 14409 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
14410 | return false; |
14411 | } | |
14412 | ||
14413 | if (range_beginning > range_end) | |
14414 | { | |
14415 | /* Inverted range entries are invalid. */ | |
b98664d3 | 14416 | complaint (_("Invalid .debug_rnglists data (inverted range)")); |
43988095 JK |
14417 | return false; |
14418 | } | |
14419 | ||
14420 | /* Empty range entries have no effect. */ | |
14421 | if (range_beginning == range_end) | |
14422 | continue; | |
14423 | ||
14424 | range_beginning += base; | |
14425 | range_end += base; | |
14426 | ||
14427 | /* A not-uncommon case of bad debug info. | |
14428 | Don't pollute the addrmap with bad data. */ | |
14429 | if (range_beginning + baseaddr == 0 | |
14430 | && !dwarf2_per_objfile->has_section_at_zero) | |
14431 | { | |
b98664d3 | 14432 | complaint (_(".debug_rnglists entry has start address of zero" |
43988095 JK |
14433 | " [in module %s]"), objfile_name (objfile)); |
14434 | continue; | |
14435 | } | |
14436 | ||
14437 | callback (range_beginning, range_end); | |
14438 | } | |
14439 | ||
14440 | if (overflow) | |
14441 | { | |
b98664d3 | 14442 | complaint (_("Offset %d is not terminated " |
43988095 JK |
14443 | "for DW_AT_ranges attribute"), |
14444 | offset); | |
14445 | return false; | |
14446 | } | |
14447 | ||
14448 | return true; | |
14449 | } | |
14450 | ||
14451 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET reading .debug_ranges. | |
14452 | Callback's type should be: | |
14453 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
5f46c5a5 | 14454 | Return 1 if the attributes are present and valid, otherwise, return 0. */ |
43039443 | 14455 | |
43988095 | 14456 | template <typename Callback> |
43039443 | 14457 | static int |
5f46c5a5 | 14458 | dwarf2_ranges_process (unsigned offset, struct dwarf2_cu *cu, |
43988095 | 14459 | Callback &&callback) |
43039443 | 14460 | { |
ed2dc618 | 14461 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 14462 | = cu->per_cu->dwarf2_per_objfile; |
ed2dc618 | 14463 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
43039443 JK |
14464 | struct comp_unit_head *cu_header = &cu->header; |
14465 | bfd *obfd = objfile->obfd; | |
14466 | unsigned int addr_size = cu_header->addr_size; | |
14467 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
14468 | /* Base address selection entry. */ | |
14469 | CORE_ADDR base; | |
14470 | int found_base; | |
14471 | unsigned int dummy; | |
d521ce57 | 14472 | const gdb_byte *buffer; |
ff013f42 | 14473 | CORE_ADDR baseaddr; |
43039443 | 14474 | |
43988095 JK |
14475 | if (cu_header->version >= 5) |
14476 | return dwarf2_rnglists_process (offset, cu, callback); | |
14477 | ||
d00adf39 DE |
14478 | found_base = cu->base_known; |
14479 | base = cu->base_address; | |
43039443 | 14480 | |
be391dca | 14481 | dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges); |
dce234bc | 14482 | if (offset >= dwarf2_per_objfile->ranges.size) |
43039443 | 14483 | { |
b98664d3 | 14484 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43039443 JK |
14485 | offset); |
14486 | return 0; | |
14487 | } | |
dce234bc | 14488 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
43039443 | 14489 | |
e7030f15 | 14490 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
ff013f42 | 14491 | |
43039443 JK |
14492 | while (1) |
14493 | { | |
14494 | CORE_ADDR range_beginning, range_end; | |
14495 | ||
14496 | range_beginning = read_address (obfd, buffer, cu, &dummy); | |
14497 | buffer += addr_size; | |
14498 | range_end = read_address (obfd, buffer, cu, &dummy); | |
14499 | buffer += addr_size; | |
14500 | offset += 2 * addr_size; | |
14501 | ||
14502 | /* An end of list marker is a pair of zero addresses. */ | |
14503 | if (range_beginning == 0 && range_end == 0) | |
14504 | /* Found the end of list entry. */ | |
14505 | break; | |
14506 | ||
14507 | /* Each base address selection entry is a pair of 2 values. | |
14508 | The first is the largest possible address, the second is | |
14509 | the base address. Check for a base address here. */ | |
14510 | if ((range_beginning & mask) == mask) | |
14511 | { | |
28d2bfb9 AB |
14512 | /* If we found the largest possible address, then we already |
14513 | have the base address in range_end. */ | |
14514 | base = range_end; | |
43039443 JK |
14515 | found_base = 1; |
14516 | continue; | |
14517 | } | |
14518 | ||
14519 | if (!found_base) | |
14520 | { | |
14521 | /* We have no valid base address for the ranges | |
14522 | data. */ | |
b98664d3 | 14523 | complaint (_("Invalid .debug_ranges data (no base address)")); |
43039443 JK |
14524 | return 0; |
14525 | } | |
14526 | ||
9277c30c UW |
14527 | if (range_beginning > range_end) |
14528 | { | |
14529 | /* Inverted range entries are invalid. */ | |
b98664d3 | 14530 | complaint (_("Invalid .debug_ranges data (inverted range)")); |
9277c30c UW |
14531 | return 0; |
14532 | } | |
14533 | ||
14534 | /* Empty range entries have no effect. */ | |
14535 | if (range_beginning == range_end) | |
14536 | continue; | |
14537 | ||
43039443 JK |
14538 | range_beginning += base; |
14539 | range_end += base; | |
14540 | ||
01093045 DE |
14541 | /* A not-uncommon case of bad debug info. |
14542 | Don't pollute the addrmap with bad data. */ | |
14543 | if (range_beginning + baseaddr == 0 | |
14544 | && !dwarf2_per_objfile->has_section_at_zero) | |
14545 | { | |
b98664d3 | 14546 | complaint (_(".debug_ranges entry has start address of zero" |
4262abfb | 14547 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
14548 | continue; |
14549 | } | |
14550 | ||
5f46c5a5 JK |
14551 | callback (range_beginning, range_end); |
14552 | } | |
14553 | ||
14554 | return 1; | |
14555 | } | |
14556 | ||
14557 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. | |
14558 | Return 1 if the attributes are present and valid, otherwise, return 0. | |
14559 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
14560 | ||
14561 | static int | |
14562 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
14563 | CORE_ADDR *high_return, struct dwarf2_cu *cu, | |
14564 | struct partial_symtab *ranges_pst) | |
14565 | { | |
518817b3 | 14566 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
5f46c5a5 JK |
14567 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
14568 | const CORE_ADDR baseaddr = ANOFFSET (objfile->section_offsets, | |
14569 | SECT_OFF_TEXT (objfile)); | |
14570 | int low_set = 0; | |
14571 | CORE_ADDR low = 0; | |
14572 | CORE_ADDR high = 0; | |
14573 | int retval; | |
14574 | ||
14575 | retval = dwarf2_ranges_process (offset, cu, | |
14576 | [&] (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
14577 | { | |
9277c30c | 14578 | if (ranges_pst != NULL) |
3e29f34a MR |
14579 | { |
14580 | CORE_ADDR lowpc; | |
14581 | CORE_ADDR highpc; | |
14582 | ||
79748972 TT |
14583 | lowpc = (gdbarch_adjust_dwarf2_addr (gdbarch, |
14584 | range_beginning + baseaddr) | |
14585 | - baseaddr); | |
14586 | highpc = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
14587 | range_end + baseaddr) | |
14588 | - baseaddr); | |
d320c2b5 TT |
14589 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
14590 | lowpc, highpc - 1, ranges_pst); | |
3e29f34a | 14591 | } |
ff013f42 | 14592 | |
43039443 JK |
14593 | /* FIXME: This is recording everything as a low-high |
14594 | segment of consecutive addresses. We should have a | |
14595 | data structure for discontiguous block ranges | |
14596 | instead. */ | |
14597 | if (! low_set) | |
14598 | { | |
14599 | low = range_beginning; | |
14600 | high = range_end; | |
14601 | low_set = 1; | |
14602 | } | |
14603 | else | |
14604 | { | |
14605 | if (range_beginning < low) | |
14606 | low = range_beginning; | |
14607 | if (range_end > high) | |
14608 | high = range_end; | |
14609 | } | |
5f46c5a5 JK |
14610 | }); |
14611 | if (!retval) | |
14612 | return 0; | |
43039443 JK |
14613 | |
14614 | if (! low_set) | |
14615 | /* If the first entry is an end-of-list marker, the range | |
14616 | describes an empty scope, i.e. no instructions. */ | |
14617 | return 0; | |
14618 | ||
14619 | if (low_return) | |
14620 | *low_return = low; | |
14621 | if (high_return) | |
14622 | *high_return = high; | |
14623 | return 1; | |
14624 | } | |
14625 | ||
3a2b436a JK |
14626 | /* Get low and high pc attributes from a die. See enum pc_bounds_kind |
14627 | definition for the return value. *LOWPC and *HIGHPC are set iff | |
e385593e | 14628 | neither PC_BOUNDS_NOT_PRESENT nor PC_BOUNDS_INVALID are returned. */ |
380bca97 | 14629 | |
3a2b436a | 14630 | static enum pc_bounds_kind |
af34e669 | 14631 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 DJ |
14632 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
14633 | struct partial_symtab *pst) | |
c906108c | 14634 | { |
518817b3 SM |
14635 | struct dwarf2_per_objfile *dwarf2_per_objfile |
14636 | = cu->per_cu->dwarf2_per_objfile; | |
c906108c | 14637 | struct attribute *attr; |
91da1414 | 14638 | struct attribute *attr_high; |
af34e669 DJ |
14639 | CORE_ADDR low = 0; |
14640 | CORE_ADDR high = 0; | |
e385593e | 14641 | enum pc_bounds_kind ret; |
c906108c | 14642 | |
91da1414 MW |
14643 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14644 | if (attr_high) | |
af34e669 | 14645 | { |
e142c38c | 14646 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 | 14647 | if (attr) |
91da1414 | 14648 | { |
31aa7e4e JB |
14649 | low = attr_value_as_address (attr); |
14650 | high = attr_value_as_address (attr_high); | |
14651 | if (cu->header.version >= 4 && attr_form_is_constant (attr_high)) | |
14652 | high += low; | |
91da1414 | 14653 | } |
af34e669 DJ |
14654 | else |
14655 | /* Found high w/o low attribute. */ | |
e385593e | 14656 | return PC_BOUNDS_INVALID; |
af34e669 DJ |
14657 | |
14658 | /* Found consecutive range of addresses. */ | |
3a2b436a | 14659 | ret = PC_BOUNDS_HIGH_LOW; |
af34e669 | 14660 | } |
c906108c | 14661 | else |
af34e669 | 14662 | { |
e142c38c | 14663 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
14664 | if (attr != NULL) |
14665 | { | |
ab435259 DE |
14666 | /* DW_AT_ranges_base does not apply to DIEs from the DWO skeleton. |
14667 | We take advantage of the fact that DW_AT_ranges does not appear | |
14668 | in DW_TAG_compile_unit of DWO files. */ | |
14669 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
14670 | unsigned int ranges_offset = (DW_UNSND (attr) | |
14671 | + (need_ranges_base | |
14672 | ? cu->ranges_base | |
14673 | : 0)); | |
2e3cf129 | 14674 | |
af34e669 | 14675 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 14676 | .debug_ranges section. */ |
2e3cf129 | 14677 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst)) |
e385593e | 14678 | return PC_BOUNDS_INVALID; |
43039443 | 14679 | /* Found discontinuous range of addresses. */ |
3a2b436a | 14680 | ret = PC_BOUNDS_RANGES; |
af34e669 | 14681 | } |
e385593e JK |
14682 | else |
14683 | return PC_BOUNDS_NOT_PRESENT; | |
af34e669 | 14684 | } |
c906108c | 14685 | |
48fbe735 | 14686 | /* partial_die_info::read has also the strict LOW < HIGH requirement. */ |
9373cf26 | 14687 | if (high <= low) |
e385593e | 14688 | return PC_BOUNDS_INVALID; |
c906108c SS |
14689 | |
14690 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
14691 | eliminate duplicate copies of functions and vtables and such. | |
14692 | The linker will arbitrarily choose one and discard the others. | |
14693 | The AT_*_pc values for such functions refer to local labels in | |
14694 | these sections. If the section from that file was discarded, the | |
14695 | labels are not in the output, so the relocs get a value of 0. | |
14696 | If this is a discarded function, mark the pc bounds as invalid, | |
14697 | so that GDB will ignore it. */ | |
72dca2f5 | 14698 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
e385593e | 14699 | return PC_BOUNDS_INVALID; |
c906108c SS |
14700 | |
14701 | *lowpc = low; | |
96408a79 SA |
14702 | if (highpc) |
14703 | *highpc = high; | |
af34e669 | 14704 | return ret; |
c906108c SS |
14705 | } |
14706 | ||
b084d499 JB |
14707 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
14708 | its low and high PC addresses. Do nothing if these addresses could not | |
14709 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
14710 | and HIGHPC to the high address if greater than HIGHPC. */ | |
14711 | ||
14712 | static void | |
14713 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
14714 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
14715 | struct dwarf2_cu *cu) | |
14716 | { | |
14717 | CORE_ADDR low, high; | |
14718 | struct die_info *child = die->child; | |
14719 | ||
e385593e | 14720 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL) >= PC_BOUNDS_RANGES) |
b084d499 | 14721 | { |
325fac50 PA |
14722 | *lowpc = std::min (*lowpc, low); |
14723 | *highpc = std::max (*highpc, high); | |
b084d499 JB |
14724 | } |
14725 | ||
14726 | /* If the language does not allow nested subprograms (either inside | |
14727 | subprograms or lexical blocks), we're done. */ | |
14728 | if (cu->language != language_ada) | |
14729 | return; | |
6e70227d | 14730 | |
b084d499 JB |
14731 | /* Check all the children of the given DIE. If it contains nested |
14732 | subprograms, then check their pc bounds. Likewise, we need to | |
14733 | check lexical blocks as well, as they may also contain subprogram | |
14734 | definitions. */ | |
14735 | while (child && child->tag) | |
14736 | { | |
14737 | if (child->tag == DW_TAG_subprogram | |
14738 | || child->tag == DW_TAG_lexical_block) | |
14739 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
14740 | child = sibling_die (child); | |
14741 | } | |
14742 | } | |
14743 | ||
fae299cd DC |
14744 | /* Get the low and high pc's represented by the scope DIE, and store |
14745 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
14746 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
14747 | ||
14748 | static void | |
14749 | get_scope_pc_bounds (struct die_info *die, | |
14750 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
14751 | struct dwarf2_cu *cu) | |
14752 | { | |
14753 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
14754 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
14755 | CORE_ADDR current_low, current_high; | |
14756 | ||
3a2b436a | 14757 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL) |
e385593e | 14758 | >= PC_BOUNDS_RANGES) |
fae299cd DC |
14759 | { |
14760 | best_low = current_low; | |
14761 | best_high = current_high; | |
14762 | } | |
14763 | else | |
14764 | { | |
14765 | struct die_info *child = die->child; | |
14766 | ||
14767 | while (child && child->tag) | |
14768 | { | |
14769 | switch (child->tag) { | |
14770 | case DW_TAG_subprogram: | |
b084d499 | 14771 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
14772 | break; |
14773 | case DW_TAG_namespace: | |
f55ee35c | 14774 | case DW_TAG_module: |
fae299cd DC |
14775 | /* FIXME: carlton/2004-01-16: Should we do this for |
14776 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
14777 | that current GCC's always emit the DIEs corresponding | |
14778 | to definitions of methods of classes as children of a | |
14779 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
14780 | the DIEs giving the declarations, which could be | |
14781 | anywhere). But I don't see any reason why the | |
14782 | standards says that they have to be there. */ | |
14783 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
14784 | ||
14785 | if (current_low != ((CORE_ADDR) -1)) | |
14786 | { | |
325fac50 PA |
14787 | best_low = std::min (best_low, current_low); |
14788 | best_high = std::max (best_high, current_high); | |
fae299cd DC |
14789 | } |
14790 | break; | |
14791 | default: | |
0963b4bd | 14792 | /* Ignore. */ |
fae299cd DC |
14793 | break; |
14794 | } | |
14795 | ||
14796 | child = sibling_die (child); | |
14797 | } | |
14798 | } | |
14799 | ||
14800 | *lowpc = best_low; | |
14801 | *highpc = best_high; | |
14802 | } | |
14803 | ||
801e3a5b JB |
14804 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
14805 | in DIE. */ | |
380bca97 | 14806 | |
801e3a5b JB |
14807 | static void |
14808 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
14809 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
14810 | { | |
518817b3 | 14811 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 14812 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
801e3a5b | 14813 | struct attribute *attr; |
91da1414 | 14814 | struct attribute *attr_high; |
801e3a5b | 14815 | |
91da1414 MW |
14816 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14817 | if (attr_high) | |
801e3a5b | 14818 | { |
801e3a5b JB |
14819 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
14820 | if (attr) | |
14821 | { | |
31aa7e4e JB |
14822 | CORE_ADDR low = attr_value_as_address (attr); |
14823 | CORE_ADDR high = attr_value_as_address (attr_high); | |
14824 | ||
14825 | if (cu->header.version >= 4 && attr_form_is_constant (attr_high)) | |
14826 | high += low; | |
9a619af0 | 14827 | |
3e29f34a MR |
14828 | low = gdbarch_adjust_dwarf2_addr (gdbarch, low + baseaddr); |
14829 | high = gdbarch_adjust_dwarf2_addr (gdbarch, high + baseaddr); | |
804d2729 | 14830 | cu->builder->record_block_range (block, low, high - 1); |
801e3a5b JB |
14831 | } |
14832 | } | |
14833 | ||
14834 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
14835 | if (attr) | |
14836 | { | |
ab435259 DE |
14837 | /* DW_AT_ranges_base does not apply to DIEs from the DWO skeleton. |
14838 | We take advantage of the fact that DW_AT_ranges does not appear | |
14839 | in DW_TAG_compile_unit of DWO files. */ | |
14840 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
801e3a5b JB |
14841 | |
14842 | /* The value of the DW_AT_ranges attribute is the offset of the | |
14843 | address range list in the .debug_ranges section. */ | |
ab435259 DE |
14844 | unsigned long offset = (DW_UNSND (attr) |
14845 | + (need_ranges_base ? cu->ranges_base : 0)); | |
801e3a5b | 14846 | |
2d5f09ec | 14847 | std::vector<blockrange> blockvec; |
5f46c5a5 JK |
14848 | dwarf2_ranges_process (offset, cu, |
14849 | [&] (CORE_ADDR start, CORE_ADDR end) | |
14850 | { | |
58fdfd2c JK |
14851 | start += baseaddr; |
14852 | end += baseaddr; | |
5f46c5a5 JK |
14853 | start = gdbarch_adjust_dwarf2_addr (gdbarch, start); |
14854 | end = gdbarch_adjust_dwarf2_addr (gdbarch, end); | |
804d2729 | 14855 | cu->builder->record_block_range (block, start, end - 1); |
2d5f09ec | 14856 | blockvec.emplace_back (start, end); |
5f46c5a5 | 14857 | }); |
2d5f09ec KB |
14858 | |
14859 | BLOCK_RANGES(block) = make_blockranges (objfile, blockvec); | |
801e3a5b JB |
14860 | } |
14861 | } | |
14862 | ||
685b1105 JK |
14863 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
14864 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 14865 | |
685b1105 JK |
14866 | static void |
14867 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 | 14868 | { |
38360086 | 14869 | int major, minor; |
60d5a603 JK |
14870 | |
14871 | if (cu->producer == NULL) | |
14872 | { | |
14873 | /* For unknown compilers expect their behavior is DWARF version | |
14874 | compliant. | |
14875 | ||
14876 | GCC started to support .debug_types sections by -gdwarf-4 since | |
14877 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
14878 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
14879 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
14880 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 14881 | } |
b1ffba5a | 14882 | else if (producer_is_gcc (cu->producer, &major, &minor)) |
60d5a603 | 14883 | { |
38360086 MW |
14884 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); |
14885 | cu->producer_is_gcc_lt_4_3 = major < 4 || (major == 4 && minor < 3); | |
685b1105 | 14886 | } |
5230b05a | 14887 | else if (producer_is_icc (cu->producer, &major, &minor)) |
eb77c9df AB |
14888 | { |
14889 | cu->producer_is_icc = true; | |
14890 | cu->producer_is_icc_lt_14 = major < 14; | |
14891 | } | |
c258c396 JD |
14892 | else if (startswith (cu->producer, "CodeWarrior S12/L-ISA")) |
14893 | cu->producer_is_codewarrior = true; | |
685b1105 JK |
14894 | else |
14895 | { | |
14896 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
14897 | compliant. */ | |
60d5a603 JK |
14898 | } |
14899 | ||
9068261f | 14900 | cu->checked_producer = true; |
685b1105 | 14901 | } |
ba919b58 | 14902 | |
685b1105 JK |
14903 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
14904 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
14905 | during 4.6.0 experimental. */ | |
14906 | ||
9068261f | 14907 | static bool |
685b1105 JK |
14908 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) |
14909 | { | |
14910 | if (!cu->checked_producer) | |
14911 | check_producer (cu); | |
14912 | ||
14913 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
14914 | } |
14915 | ||
c258c396 JD |
14916 | |
14917 | /* Codewarrior (at least as of version 5.0.40) generates dwarf line information | |
14918 | with incorrect is_stmt attributes. */ | |
14919 | ||
14920 | static bool | |
14921 | producer_is_codewarrior (struct dwarf2_cu *cu) | |
14922 | { | |
14923 | if (!cu->checked_producer) | |
14924 | check_producer (cu); | |
14925 | ||
14926 | return cu->producer_is_codewarrior; | |
14927 | } | |
14928 | ||
60d5a603 JK |
14929 | /* Return the default accessibility type if it is not overriden by |
14930 | DW_AT_accessibility. */ | |
14931 | ||
14932 | static enum dwarf_access_attribute | |
14933 | dwarf2_default_access_attribute (struct die_info *die, struct dwarf2_cu *cu) | |
14934 | { | |
14935 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) | |
14936 | { | |
14937 | /* The default DWARF 2 accessibility for members is public, the default | |
14938 | accessibility for inheritance is private. */ | |
14939 | ||
14940 | if (die->tag != DW_TAG_inheritance) | |
14941 | return DW_ACCESS_public; | |
14942 | else | |
14943 | return DW_ACCESS_private; | |
14944 | } | |
14945 | else | |
14946 | { | |
14947 | /* DWARF 3+ defines the default accessibility a different way. The same | |
14948 | rules apply now for DW_TAG_inheritance as for the members and it only | |
14949 | depends on the container kind. */ | |
14950 | ||
14951 | if (die->parent->tag == DW_TAG_class_type) | |
14952 | return DW_ACCESS_private; | |
14953 | else | |
14954 | return DW_ACCESS_public; | |
14955 | } | |
14956 | } | |
14957 | ||
74ac6d43 TT |
14958 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
14959 | offset. If the attribute was not found return 0, otherwise return | |
14960 | 1. If it was found but could not properly be handled, set *OFFSET | |
14961 | to 0. */ | |
14962 | ||
14963 | static int | |
14964 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
14965 | LONGEST *offset) | |
14966 | { | |
14967 | struct attribute *attr; | |
14968 | ||
14969 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
14970 | if (attr != NULL) | |
14971 | { | |
14972 | *offset = 0; | |
14973 | ||
14974 | /* Note that we do not check for a section offset first here. | |
14975 | This is because DW_AT_data_member_location is new in DWARF 4, | |
14976 | so if we see it, we can assume that a constant form is really | |
14977 | a constant and not a section offset. */ | |
14978 | if (attr_form_is_constant (attr)) | |
14979 | *offset = dwarf2_get_attr_constant_value (attr, 0); | |
14980 | else if (attr_form_is_section_offset (attr)) | |
14981 | dwarf2_complex_location_expr_complaint (); | |
14982 | else if (attr_form_is_block (attr)) | |
14983 | *offset = decode_locdesc (DW_BLOCK (attr), cu); | |
14984 | else | |
14985 | dwarf2_complex_location_expr_complaint (); | |
14986 | ||
14987 | return 1; | |
14988 | } | |
14989 | ||
14990 | return 0; | |
14991 | } | |
14992 | ||
c906108c SS |
14993 | /* Add an aggregate field to the field list. */ |
14994 | ||
14995 | static void | |
107d2387 | 14996 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 14997 | struct dwarf2_cu *cu) |
6e70227d | 14998 | { |
518817b3 | 14999 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
5e2b427d | 15000 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
15001 | struct nextfield *new_field; |
15002 | struct attribute *attr; | |
15003 | struct field *fp; | |
15d034d0 | 15004 | const char *fieldname = ""; |
c906108c | 15005 | |
7d0ccb61 DJ |
15006 | if (die->tag == DW_TAG_inheritance) |
15007 | { | |
be2daae6 TT |
15008 | fip->baseclasses.emplace_back (); |
15009 | new_field = &fip->baseclasses.back (); | |
7d0ccb61 DJ |
15010 | } |
15011 | else | |
15012 | { | |
be2daae6 TT |
15013 | fip->fields.emplace_back (); |
15014 | new_field = &fip->fields.back (); | |
7d0ccb61 | 15015 | } |
be2daae6 | 15016 | |
c906108c SS |
15017 | fip->nfields++; |
15018 | ||
e142c38c | 15019 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
15020 | if (attr) |
15021 | new_field->accessibility = DW_UNSND (attr); | |
60d5a603 JK |
15022 | else |
15023 | new_field->accessibility = dwarf2_default_access_attribute (die, cu); | |
c906108c SS |
15024 | if (new_field->accessibility != DW_ACCESS_public) |
15025 | fip->non_public_fields = 1; | |
60d5a603 | 15026 | |
e142c38c | 15027 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
15028 | if (attr) |
15029 | new_field->virtuality = DW_UNSND (attr); | |
60d5a603 JK |
15030 | else |
15031 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
15032 | |
15033 | fp = &new_field->field; | |
a9a9bd0f | 15034 | |
e142c38c | 15035 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 15036 | { |
74ac6d43 TT |
15037 | LONGEST offset; |
15038 | ||
a9a9bd0f | 15039 | /* Data member other than a C++ static data member. */ |
6e70227d | 15040 | |
c906108c | 15041 | /* Get type of field. */ |
e7c27a73 | 15042 | fp->type = die_type (die, cu); |
c906108c | 15043 | |
d6a843b5 | 15044 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 15045 | |
c906108c | 15046 | /* Get bit size of field (zero if none). */ |
e142c38c | 15047 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
15048 | if (attr) |
15049 | { | |
15050 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
15051 | } | |
15052 | else | |
15053 | { | |
15054 | FIELD_BITSIZE (*fp) = 0; | |
15055 | } | |
15056 | ||
15057 | /* Get bit offset of field. */ | |
74ac6d43 TT |
15058 | if (handle_data_member_location (die, cu, &offset)) |
15059 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
e142c38c | 15060 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
15061 | if (attr) |
15062 | { | |
5e2b427d | 15063 | if (gdbarch_bits_big_endian (gdbarch)) |
c906108c SS |
15064 | { |
15065 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
15066 | additional bit offset from the MSB of the containing |
15067 | anonymous object to the MSB of the field. We don't | |
15068 | have to do anything special since we don't need to | |
15069 | know the size of the anonymous object. */ | |
f41f5e61 | 15070 | SET_FIELD_BITPOS (*fp, FIELD_BITPOS (*fp) + DW_UNSND (attr)); |
c906108c SS |
15071 | } |
15072 | else | |
15073 | { | |
15074 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
15075 | MSB of the anonymous object, subtract off the number of |
15076 | bits from the MSB of the field to the MSB of the | |
15077 | object, and then subtract off the number of bits of | |
15078 | the field itself. The result is the bit offset of | |
15079 | the LSB of the field. */ | |
c906108c SS |
15080 | int anonymous_size; |
15081 | int bit_offset = DW_UNSND (attr); | |
15082 | ||
e142c38c | 15083 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
15084 | if (attr) |
15085 | { | |
15086 | /* The size of the anonymous object containing | |
15087 | the bit field is explicit, so use the | |
15088 | indicated size (in bytes). */ | |
15089 | anonymous_size = DW_UNSND (attr); | |
15090 | } | |
15091 | else | |
15092 | { | |
15093 | /* The size of the anonymous object containing | |
15094 | the bit field must be inferred from the type | |
15095 | attribute of the data member containing the | |
15096 | bit field. */ | |
15097 | anonymous_size = TYPE_LENGTH (fp->type); | |
15098 | } | |
f41f5e61 PA |
15099 | SET_FIELD_BITPOS (*fp, |
15100 | (FIELD_BITPOS (*fp) | |
15101 | + anonymous_size * bits_per_byte | |
15102 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
15103 | } |
15104 | } | |
da5b30da AA |
15105 | attr = dwarf2_attr (die, DW_AT_data_bit_offset, cu); |
15106 | if (attr != NULL) | |
15107 | SET_FIELD_BITPOS (*fp, (FIELD_BITPOS (*fp) | |
15108 | + dwarf2_get_attr_constant_value (attr, 0))); | |
c906108c SS |
15109 | |
15110 | /* Get name of field. */ | |
39cbfefa DJ |
15111 | fieldname = dwarf2_name (die, cu); |
15112 | if (fieldname == NULL) | |
15113 | fieldname = ""; | |
d8151005 DJ |
15114 | |
15115 | /* The name is already allocated along with this objfile, so we don't | |
15116 | need to duplicate it for the type. */ | |
15117 | fp->name = fieldname; | |
c906108c SS |
15118 | |
15119 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 15120 | pointer or virtual base class pointer) to private. */ |
e142c38c | 15121 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 15122 | { |
d48cc9dd | 15123 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
15124 | new_field->accessibility = DW_ACCESS_private; |
15125 | fip->non_public_fields = 1; | |
15126 | } | |
15127 | } | |
a9a9bd0f | 15128 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 15129 | { |
a9a9bd0f DC |
15130 | /* C++ static member. */ |
15131 | ||
15132 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
15133 | is a declaration, but all versions of G++ as of this writing | |
15134 | (so through at least 3.2.1) incorrectly generate | |
15135 | DW_TAG_variable tags. */ | |
6e70227d | 15136 | |
ff355380 | 15137 | const char *physname; |
c906108c | 15138 | |
a9a9bd0f | 15139 | /* Get name of field. */ |
39cbfefa DJ |
15140 | fieldname = dwarf2_name (die, cu); |
15141 | if (fieldname == NULL) | |
c906108c SS |
15142 | return; |
15143 | ||
254e6b9e | 15144 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
15145 | if (attr |
15146 | /* Only create a symbol if this is an external value. | |
15147 | new_symbol checks this and puts the value in the global symbol | |
15148 | table, which we want. If it is not external, new_symbol | |
15149 | will try to put the value in cu->list_in_scope which is wrong. */ | |
15150 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
15151 | { |
15152 | /* A static const member, not much different than an enum as far as | |
15153 | we're concerned, except that we can support more types. */ | |
15154 | new_symbol (die, NULL, cu); | |
15155 | } | |
15156 | ||
2df3850c | 15157 | /* Get physical name. */ |
ff355380 | 15158 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 15159 | |
d8151005 DJ |
15160 | /* The name is already allocated along with this objfile, so we don't |
15161 | need to duplicate it for the type. */ | |
15162 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 15163 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 15164 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
15165 | } |
15166 | else if (die->tag == DW_TAG_inheritance) | |
15167 | { | |
74ac6d43 | 15168 | LONGEST offset; |
d4b96c9a | 15169 | |
74ac6d43 TT |
15170 | /* C++ base class field. */ |
15171 | if (handle_data_member_location (die, cu, &offset)) | |
15172 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
c906108c | 15173 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 15174 | FIELD_TYPE (*fp) = die_type (die, cu); |
a737d952 | 15175 | FIELD_NAME (*fp) = TYPE_NAME (fp->type); |
c906108c | 15176 | } |
2ddeaf8a TT |
15177 | else if (die->tag == DW_TAG_variant_part) |
15178 | { | |
15179 | /* process_structure_scope will treat this DIE as a union. */ | |
15180 | process_structure_scope (die, cu); | |
15181 | ||
15182 | /* The variant part is relative to the start of the enclosing | |
15183 | structure. */ | |
15184 | SET_FIELD_BITPOS (*fp, 0); | |
15185 | fp->type = get_die_type (die, cu); | |
15186 | fp->artificial = 1; | |
15187 | fp->name = "<<variant>>"; | |
c8c81635 TT |
15188 | |
15189 | /* Normally a DW_TAG_variant_part won't have a size, but our | |
15190 | representation requires one, so set it to the maximum of the | |
15191 | child sizes. */ | |
15192 | if (TYPE_LENGTH (fp->type) == 0) | |
15193 | { | |
15194 | unsigned max = 0; | |
15195 | for (int i = 0; i < TYPE_NFIELDS (fp->type); ++i) | |
15196 | if (TYPE_LENGTH (TYPE_FIELD_TYPE (fp->type, i)) > max) | |
15197 | max = TYPE_LENGTH (TYPE_FIELD_TYPE (fp->type, i)); | |
15198 | TYPE_LENGTH (fp->type) = max; | |
15199 | } | |
2ddeaf8a TT |
15200 | } |
15201 | else | |
15202 | gdb_assert_not_reached ("missing case in dwarf2_add_field"); | |
c906108c SS |
15203 | } |
15204 | ||
883fd55a KS |
15205 | /* Can the type given by DIE define another type? */ |
15206 | ||
15207 | static bool | |
15208 | type_can_define_types (const struct die_info *die) | |
15209 | { | |
15210 | switch (die->tag) | |
15211 | { | |
15212 | case DW_TAG_typedef: | |
15213 | case DW_TAG_class_type: | |
15214 | case DW_TAG_structure_type: | |
15215 | case DW_TAG_union_type: | |
15216 | case DW_TAG_enumeration_type: | |
15217 | return true; | |
15218 | ||
15219 | default: | |
15220 | return false; | |
15221 | } | |
15222 | } | |
15223 | ||
15224 | /* Add a type definition defined in the scope of the FIP's class. */ | |
98751a41 JK |
15225 | |
15226 | static void | |
883fd55a KS |
15227 | dwarf2_add_type_defn (struct field_info *fip, struct die_info *die, |
15228 | struct dwarf2_cu *cu) | |
6e70227d | 15229 | { |
be2daae6 TT |
15230 | struct decl_field fp; |
15231 | memset (&fp, 0, sizeof (fp)); | |
98751a41 | 15232 | |
883fd55a | 15233 | gdb_assert (type_can_define_types (die)); |
98751a41 | 15234 | |
883fd55a | 15235 | /* Get name of field. NULL is okay here, meaning an anonymous type. */ |
be2daae6 TT |
15236 | fp.name = dwarf2_name (die, cu); |
15237 | fp.type = read_type_die (die, cu); | |
98751a41 | 15238 | |
c191a687 KS |
15239 | /* Save accessibility. */ |
15240 | enum dwarf_access_attribute accessibility; | |
15241 | struct attribute *attr = dwarf2_attr (die, DW_AT_accessibility, cu); | |
15242 | if (attr != NULL) | |
15243 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); | |
15244 | else | |
15245 | accessibility = dwarf2_default_access_attribute (die, cu); | |
15246 | switch (accessibility) | |
15247 | { | |
15248 | case DW_ACCESS_public: | |
15249 | /* The assumed value if neither private nor protected. */ | |
15250 | break; | |
15251 | case DW_ACCESS_private: | |
be2daae6 | 15252 | fp.is_private = 1; |
c191a687 KS |
15253 | break; |
15254 | case DW_ACCESS_protected: | |
be2daae6 | 15255 | fp.is_protected = 1; |
c191a687 KS |
15256 | break; |
15257 | default: | |
b98664d3 | 15258 | complaint (_("Unhandled DW_AT_accessibility value (%x)"), accessibility); |
c191a687 KS |
15259 | } |
15260 | ||
883fd55a | 15261 | if (die->tag == DW_TAG_typedef) |
be2daae6 | 15262 | fip->typedef_field_list.push_back (fp); |
883fd55a | 15263 | else |
be2daae6 | 15264 | fip->nested_types_list.push_back (fp); |
98751a41 JK |
15265 | } |
15266 | ||
c906108c SS |
15267 | /* Create the vector of fields, and attach it to the type. */ |
15268 | ||
15269 | static void | |
fba45db2 | 15270 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15271 | struct dwarf2_cu *cu) |
c906108c SS |
15272 | { |
15273 | int nfields = fip->nfields; | |
15274 | ||
15275 | /* Record the field count, allocate space for the array of fields, | |
15276 | and create blank accessibility bitfields if necessary. */ | |
15277 | TYPE_NFIELDS (type) = nfields; | |
15278 | TYPE_FIELDS (type) = (struct field *) | |
be2daae6 | 15279 | TYPE_ZALLOC (type, sizeof (struct field) * nfields); |
c906108c | 15280 | |
b4ba55a1 | 15281 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
15282 | { |
15283 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15284 | ||
15285 | TYPE_FIELD_PRIVATE_BITS (type) = | |
15286 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15287 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
15288 | ||
15289 | TYPE_FIELD_PROTECTED_BITS (type) = | |
15290 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15291 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
15292 | ||
774b6a14 TT |
15293 | TYPE_FIELD_IGNORE_BITS (type) = |
15294 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15295 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
15296 | } |
15297 | ||
15298 | /* If the type has baseclasses, allocate and clear a bit vector for | |
15299 | TYPE_FIELD_VIRTUAL_BITS. */ | |
be2daae6 | 15300 | if (!fip->baseclasses.empty () && cu->language != language_ada) |
c906108c | 15301 | { |
be2daae6 | 15302 | int num_bytes = B_BYTES (fip->baseclasses.size ()); |
fe1b8b76 | 15303 | unsigned char *pointer; |
c906108c SS |
15304 | |
15305 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
224c3ddb | 15306 | pointer = (unsigned char *) TYPE_ALLOC (type, num_bytes); |
fe1b8b76 | 15307 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; |
be2daae6 TT |
15308 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->baseclasses.size ()); |
15309 | TYPE_N_BASECLASSES (type) = fip->baseclasses.size (); | |
c906108c SS |
15310 | } |
15311 | ||
2ddeaf8a TT |
15312 | if (TYPE_FLAG_DISCRIMINATED_UNION (type)) |
15313 | { | |
15314 | struct discriminant_info *di = alloc_discriminant_info (type, -1, -1); | |
15315 | ||
be2daae6 | 15316 | for (int index = 0; index < nfields; ++index) |
2ddeaf8a | 15317 | { |
be2daae6 TT |
15318 | struct nextfield &field = fip->fields[index]; |
15319 | ||
15320 | if (field.variant.is_discriminant) | |
2ddeaf8a | 15321 | di->discriminant_index = index; |
be2daae6 | 15322 | else if (field.variant.default_branch) |
2ddeaf8a TT |
15323 | di->default_index = index; |
15324 | else | |
be2daae6 | 15325 | di->discriminants[index] = field.variant.discriminant_value; |
2ddeaf8a TT |
15326 | } |
15327 | } | |
15328 | ||
be2daae6 TT |
15329 | /* Copy the saved-up fields into the field vector. */ |
15330 | for (int i = 0; i < nfields; ++i) | |
c906108c | 15331 | { |
be2daae6 TT |
15332 | struct nextfield &field |
15333 | = ((i < fip->baseclasses.size ()) ? fip->baseclasses[i] | |
15334 | : fip->fields[i - fip->baseclasses.size ()]); | |
7d0ccb61 | 15335 | |
be2daae6 TT |
15336 | TYPE_FIELD (type, i) = field.field; |
15337 | switch (field.accessibility) | |
c906108c | 15338 | { |
c5aa993b | 15339 | case DW_ACCESS_private: |
b4ba55a1 | 15340 | if (cu->language != language_ada) |
be2daae6 | 15341 | SET_TYPE_FIELD_PRIVATE (type, i); |
c5aa993b | 15342 | break; |
c906108c | 15343 | |
c5aa993b | 15344 | case DW_ACCESS_protected: |
b4ba55a1 | 15345 | if (cu->language != language_ada) |
be2daae6 | 15346 | SET_TYPE_FIELD_PROTECTED (type, i); |
c5aa993b | 15347 | break; |
c906108c | 15348 | |
c5aa993b JM |
15349 | case DW_ACCESS_public: |
15350 | break; | |
c906108c | 15351 | |
c5aa993b JM |
15352 | default: |
15353 | /* Unknown accessibility. Complain and treat it as public. */ | |
15354 | { | |
b98664d3 | 15355 | complaint (_("unsupported accessibility %d"), |
be2daae6 | 15356 | field.accessibility); |
c5aa993b JM |
15357 | } |
15358 | break; | |
c906108c | 15359 | } |
be2daae6 | 15360 | if (i < fip->baseclasses.size ()) |
c906108c | 15361 | { |
be2daae6 | 15362 | switch (field.virtuality) |
c906108c | 15363 | { |
c5aa993b JM |
15364 | case DW_VIRTUALITY_virtual: |
15365 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 15366 | if (cu->language == language_ada) |
a73c6dcd | 15367 | error (_("unexpected virtuality in component of Ada type")); |
be2daae6 | 15368 | SET_TYPE_FIELD_VIRTUAL (type, i); |
c5aa993b | 15369 | break; |
c906108c SS |
15370 | } |
15371 | } | |
c906108c SS |
15372 | } |
15373 | } | |
15374 | ||
7d27a96d TT |
15375 | /* Return true if this member function is a constructor, false |
15376 | otherwise. */ | |
15377 | ||
15378 | static int | |
15379 | dwarf2_is_constructor (struct die_info *die, struct dwarf2_cu *cu) | |
15380 | { | |
15381 | const char *fieldname; | |
fe978cb0 | 15382 | const char *type_name; |
7d27a96d TT |
15383 | int len; |
15384 | ||
15385 | if (die->parent == NULL) | |
15386 | return 0; | |
15387 | ||
15388 | if (die->parent->tag != DW_TAG_structure_type | |
15389 | && die->parent->tag != DW_TAG_union_type | |
15390 | && die->parent->tag != DW_TAG_class_type) | |
15391 | return 0; | |
15392 | ||
15393 | fieldname = dwarf2_name (die, cu); | |
fe978cb0 PA |
15394 | type_name = dwarf2_name (die->parent, cu); |
15395 | if (fieldname == NULL || type_name == NULL) | |
7d27a96d TT |
15396 | return 0; |
15397 | ||
15398 | len = strlen (fieldname); | |
fe978cb0 PA |
15399 | return (strncmp (fieldname, type_name, len) == 0 |
15400 | && (type_name[len] == '\0' || type_name[len] == '<')); | |
7d27a96d TT |
15401 | } |
15402 | ||
c906108c SS |
15403 | /* Add a member function to the proper fieldlist. */ |
15404 | ||
15405 | static void | |
107d2387 | 15406 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 15407 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 15408 | { |
518817b3 | 15409 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 15410 | struct attribute *attr; |
c906108c | 15411 | int i; |
be2daae6 | 15412 | struct fnfieldlist *flp = nullptr; |
c906108c | 15413 | struct fn_field *fnp; |
15d034d0 | 15414 | const char *fieldname; |
f792889a | 15415 | struct type *this_type; |
60d5a603 | 15416 | enum dwarf_access_attribute accessibility; |
c906108c | 15417 | |
b4ba55a1 | 15418 | if (cu->language == language_ada) |
a73c6dcd | 15419 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 15420 | |
2df3850c | 15421 | /* Get name of member function. */ |
39cbfefa DJ |
15422 | fieldname = dwarf2_name (die, cu); |
15423 | if (fieldname == NULL) | |
2df3850c | 15424 | return; |
c906108c | 15425 | |
c906108c | 15426 | /* Look up member function name in fieldlist. */ |
be2daae6 | 15427 | for (i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15428 | { |
27bfe10e | 15429 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
be2daae6 TT |
15430 | { |
15431 | flp = &fip->fnfieldlists[i]; | |
15432 | break; | |
15433 | } | |
c906108c SS |
15434 | } |
15435 | ||
be2daae6 TT |
15436 | /* Create a new fnfieldlist if necessary. */ |
15437 | if (flp == nullptr) | |
c906108c | 15438 | { |
be2daae6 TT |
15439 | fip->fnfieldlists.emplace_back (); |
15440 | flp = &fip->fnfieldlists.back (); | |
c906108c | 15441 | flp->name = fieldname; |
be2daae6 | 15442 | i = fip->fnfieldlists.size () - 1; |
c906108c SS |
15443 | } |
15444 | ||
be2daae6 TT |
15445 | /* Create a new member function field and add it to the vector of |
15446 | fnfieldlists. */ | |
15447 | flp->fnfields.emplace_back (); | |
15448 | fnp = &flp->fnfields.back (); | |
3da10d80 KS |
15449 | |
15450 | /* Delay processing of the physname until later. */ | |
9c37b5ae | 15451 | if (cu->language == language_cplus) |
be2daae6 TT |
15452 | add_to_method_list (type, i, flp->fnfields.size () - 1, fieldname, |
15453 | die, cu); | |
3da10d80 KS |
15454 | else |
15455 | { | |
1d06ead6 | 15456 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
15457 | fnp->physname = physname ? physname : ""; |
15458 | } | |
15459 | ||
c906108c | 15460 | fnp->type = alloc_type (objfile); |
f792889a DJ |
15461 | this_type = read_type_die (die, cu); |
15462 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 15463 | { |
f792889a | 15464 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 15465 | |
f792889a | 15466 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
15467 | of the method itself (TYPE_CODE_METHOD). */ |
15468 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
15469 | TYPE_TARGET_TYPE (this_type), |
15470 | TYPE_FIELDS (this_type), | |
15471 | TYPE_NFIELDS (this_type), | |
15472 | TYPE_VARARGS (this_type)); | |
c906108c SS |
15473 | |
15474 | /* Handle static member functions. | |
c5aa993b | 15475 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
15476 | member functions. G++ helps GDB by marking the first |
15477 | parameter for non-static member functions (which is the this | |
15478 | pointer) as artificial. We obtain this information from | |
15479 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 15480 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
15481 | fnp->voffset = VOFFSET_STATIC; |
15482 | } | |
15483 | else | |
b98664d3 | 15484 | complaint (_("member function type missing for '%s'"), |
3da10d80 | 15485 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
15486 | |
15487 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 15488 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 15489 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 15490 | |
3e43a32a MS |
15491 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
15492 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
15493 | |
15494 | /* Get accessibility. */ | |
e142c38c | 15495 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c | 15496 | if (attr) |
aead7601 | 15497 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); |
60d5a603 JK |
15498 | else |
15499 | accessibility = dwarf2_default_access_attribute (die, cu); | |
15500 | switch (accessibility) | |
c906108c | 15501 | { |
60d5a603 JK |
15502 | case DW_ACCESS_private: |
15503 | fnp->is_private = 1; | |
15504 | break; | |
15505 | case DW_ACCESS_protected: | |
15506 | fnp->is_protected = 1; | |
15507 | break; | |
c906108c SS |
15508 | } |
15509 | ||
b02dede2 | 15510 | /* Check for artificial methods. */ |
e142c38c | 15511 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
15512 | if (attr && DW_UNSND (attr) != 0) |
15513 | fnp->is_artificial = 1; | |
15514 | ||
7d27a96d TT |
15515 | fnp->is_constructor = dwarf2_is_constructor (die, cu); |
15516 | ||
0d564a31 | 15517 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
15518 | function. For older versions of GCC, this is an offset in the |
15519 | appropriate virtual table, as specified by DW_AT_containing_type. | |
15520 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
15521 | to the object address. */ |
15522 | ||
e142c38c | 15523 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
aec5aa8b | 15524 | if (attr) |
8e19ed76 | 15525 | { |
aec5aa8b | 15526 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 15527 | { |
aec5aa8b TT |
15528 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
15529 | { | |
15530 | /* Old-style GCC. */ | |
15531 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
15532 | } | |
15533 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
15534 | || (DW_BLOCK (attr)->size > 1 | |
15535 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
15536 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
15537 | { | |
aec5aa8b TT |
15538 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); |
15539 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
15540 | dwarf2_complex_location_expr_complaint (); | |
15541 | else | |
15542 | fnp->voffset /= cu->header.addr_size; | |
15543 | fnp->voffset += 2; | |
15544 | } | |
15545 | else | |
15546 | dwarf2_complex_location_expr_complaint (); | |
15547 | ||
15548 | if (!fnp->fcontext) | |
7e993ebf KS |
15549 | { |
15550 | /* If there is no `this' field and no DW_AT_containing_type, | |
15551 | we cannot actually find a base class context for the | |
15552 | vtable! */ | |
15553 | if (TYPE_NFIELDS (this_type) == 0 | |
15554 | || !TYPE_FIELD_ARTIFICIAL (this_type, 0)) | |
15555 | { | |
b98664d3 | 15556 | complaint (_("cannot determine context for virtual member " |
9d8780f0 SM |
15557 | "function \"%s\" (offset %s)"), |
15558 | fieldname, sect_offset_str (die->sect_off)); | |
7e993ebf KS |
15559 | } |
15560 | else | |
15561 | { | |
15562 | fnp->fcontext | |
15563 | = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
15564 | } | |
15565 | } | |
aec5aa8b | 15566 | } |
3690dd37 | 15567 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 15568 | { |
4d3c2250 | 15569 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
15570 | } |
15571 | else | |
15572 | { | |
4d3c2250 KB |
15573 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
15574 | fieldname); | |
8e19ed76 | 15575 | } |
0d564a31 | 15576 | } |
d48cc9dd DJ |
15577 | else |
15578 | { | |
15579 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
15580 | if (attr && DW_UNSND (attr)) | |
15581 | { | |
15582 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
b98664d3 | 15583 | complaint (_("Member function \"%s\" (offset %s) is virtual " |
3e43a32a | 15584 | "but the vtable offset is not specified"), |
9d8780f0 | 15585 | fieldname, sect_offset_str (die->sect_off)); |
9655fd1a | 15586 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
15587 | TYPE_CPLUS_DYNAMIC (type) = 1; |
15588 | } | |
15589 | } | |
c906108c SS |
15590 | } |
15591 | ||
15592 | /* Create the vector of member function fields, and attach it to the type. */ | |
15593 | ||
15594 | static void | |
fba45db2 | 15595 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15596 | struct dwarf2_cu *cu) |
c906108c | 15597 | { |
b4ba55a1 | 15598 | if (cu->language == language_ada) |
a73c6dcd | 15599 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 15600 | |
c906108c SS |
15601 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
15602 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
be2daae6 TT |
15603 | TYPE_ALLOC (type, |
15604 | sizeof (struct fn_fieldlist) * fip->fnfieldlists.size ()); | |
c906108c | 15605 | |
be2daae6 | 15606 | for (int i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15607 | { |
be2daae6 | 15608 | struct fnfieldlist &nf = fip->fnfieldlists[i]; |
c906108c | 15609 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); |
c906108c | 15610 | |
be2daae6 TT |
15611 | TYPE_FN_FIELDLIST_NAME (type, i) = nf.name; |
15612 | TYPE_FN_FIELDLIST_LENGTH (type, i) = nf.fnfields.size (); | |
c906108c | 15613 | fn_flp->fn_fields = (struct fn_field *) |
be2daae6 TT |
15614 | TYPE_ALLOC (type, sizeof (struct fn_field) * nf.fnfields.size ()); |
15615 | ||
15616 | for (int k = 0; k < nf.fnfields.size (); ++k) | |
15617 | fn_flp->fn_fields[k] = nf.fnfields[k]; | |
c906108c SS |
15618 | } |
15619 | ||
be2daae6 | 15620 | TYPE_NFN_FIELDS (type) = fip->fnfieldlists.size (); |
c906108c SS |
15621 | } |
15622 | ||
1168df01 JB |
15623 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
15624 | language, zero otherwise. */ | |
15625 | static int | |
15626 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
15627 | { | |
15628 | static const char vptr[] = "_vptr"; | |
15629 | ||
9c37b5ae TT |
15630 | /* Look for the C++ form of the vtable. */ |
15631 | if (startswith (name, vptr) && is_cplus_marker (name[sizeof (vptr) - 1])) | |
1168df01 JB |
15632 | return 1; |
15633 | ||
15634 | return 0; | |
15635 | } | |
15636 | ||
c0dd20ea | 15637 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
15638 | functions, with the ABI-specified layout. If TYPE describes |
15639 | such a structure, smash it into a member function type. | |
61049d3b DJ |
15640 | |
15641 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
15642 | This is GCC PR debug/28767. */ | |
c0dd20ea | 15643 | |
0b92b5bb TT |
15644 | static void |
15645 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 15646 | { |
09e2d7c7 | 15647 | struct type *pfn_type, *self_type, *new_type; |
c0dd20ea DJ |
15648 | |
15649 | /* Check for a structure with no name and two children. */ | |
0b92b5bb TT |
15650 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2) |
15651 | return; | |
c0dd20ea DJ |
15652 | |
15653 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
15654 | if (TYPE_FIELD_NAME (type, 0) == NULL |
15655 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
15656 | || TYPE_FIELD_NAME (type, 1) == NULL | |
15657 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
15658 | return; | |
c0dd20ea DJ |
15659 | |
15660 | /* Find the type of the method. */ | |
0b92b5bb | 15661 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea DJ |
15662 | if (pfn_type == NULL |
15663 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
15664 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
0b92b5bb | 15665 | return; |
c0dd20ea DJ |
15666 | |
15667 | /* Look for the "this" argument. */ | |
15668 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
15669 | if (TYPE_NFIELDS (pfn_type) == 0 | |
0b92b5bb | 15670 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
c0dd20ea | 15671 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) |
0b92b5bb | 15672 | return; |
c0dd20ea | 15673 | |
09e2d7c7 | 15674 | self_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); |
0b92b5bb | 15675 | new_type = alloc_type (objfile); |
09e2d7c7 | 15676 | smash_to_method_type (new_type, self_type, TYPE_TARGET_TYPE (pfn_type), |
c0dd20ea DJ |
15677 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), |
15678 | TYPE_VARARGS (pfn_type)); | |
0b92b5bb | 15679 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 15680 | } |
1168df01 | 15681 | |
2b4424c3 TT |
15682 | /* If the DIE has a DW_AT_alignment attribute, return its value, doing |
15683 | appropriate error checking and issuing complaints if there is a | |
15684 | problem. */ | |
15685 | ||
15686 | static ULONGEST | |
15687 | get_alignment (struct dwarf2_cu *cu, struct die_info *die) | |
15688 | { | |
15689 | struct attribute *attr = dwarf2_attr (die, DW_AT_alignment, cu); | |
15690 | ||
15691 | if (attr == nullptr) | |
15692 | return 0; | |
15693 | ||
15694 | if (!attr_form_is_constant (attr)) | |
15695 | { | |
b98664d3 | 15696 | complaint (_("DW_AT_alignment must have constant form" |
2b4424c3 TT |
15697 | " - DIE at %s [in module %s]"), |
15698 | sect_offset_str (die->sect_off), | |
15699 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15700 | return 0; | |
15701 | } | |
15702 | ||
15703 | ULONGEST align; | |
15704 | if (attr->form == DW_FORM_sdata) | |
15705 | { | |
15706 | LONGEST val = DW_SND (attr); | |
15707 | if (val < 0) | |
15708 | { | |
b98664d3 | 15709 | complaint (_("DW_AT_alignment value must not be negative" |
2b4424c3 TT |
15710 | " - DIE at %s [in module %s]"), |
15711 | sect_offset_str (die->sect_off), | |
15712 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15713 | return 0; | |
15714 | } | |
15715 | align = val; | |
15716 | } | |
15717 | else | |
15718 | align = DW_UNSND (attr); | |
15719 | ||
15720 | if (align == 0) | |
15721 | { | |
b98664d3 | 15722 | complaint (_("DW_AT_alignment value must not be zero" |
2b4424c3 TT |
15723 | " - DIE at %s [in module %s]"), |
15724 | sect_offset_str (die->sect_off), | |
15725 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15726 | return 0; | |
15727 | } | |
15728 | if ((align & (align - 1)) != 0) | |
15729 | { | |
b98664d3 | 15730 | complaint (_("DW_AT_alignment value must be a power of 2" |
2b4424c3 TT |
15731 | " - DIE at %s [in module %s]"), |
15732 | sect_offset_str (die->sect_off), | |
15733 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15734 | return 0; | |
15735 | } | |
15736 | ||
15737 | return align; | |
15738 | } | |
15739 | ||
15740 | /* If the DIE has a DW_AT_alignment attribute, use its value to set | |
15741 | the alignment for TYPE. */ | |
15742 | ||
15743 | static void | |
15744 | maybe_set_alignment (struct dwarf2_cu *cu, struct die_info *die, | |
15745 | struct type *type) | |
15746 | { | |
15747 | if (!set_type_align (type, get_alignment (cu, die))) | |
b98664d3 | 15748 | complaint (_("DW_AT_alignment value too large" |
2b4424c3 TT |
15749 | " - DIE at %s [in module %s]"), |
15750 | sect_offset_str (die->sect_off), | |
15751 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15752 | } | |
685b1105 | 15753 | |
c906108c | 15754 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
15755 | (definition) to create a type for the structure or union. Fill in |
15756 | the type's name and general properties; the members will not be | |
83655187 DE |
15757 | processed until process_structure_scope. A symbol table entry for |
15758 | the type will also not be done until process_structure_scope (assuming | |
15759 | the type has a name). | |
c906108c | 15760 | |
c767944b DJ |
15761 | NOTE: we need to call these functions regardless of whether or not the |
15762 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c | 15763 | structure or union. This gets the type entered into our set of |
83655187 | 15764 | user defined types. */ |
c906108c | 15765 | |
f792889a | 15766 | static struct type * |
134d01f1 | 15767 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 15768 | { |
518817b3 | 15769 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c SS |
15770 | struct type *type; |
15771 | struct attribute *attr; | |
15d034d0 | 15772 | const char *name; |
c906108c | 15773 | |
348e048f DE |
15774 | /* If the definition of this type lives in .debug_types, read that type. |
15775 | Don't follow DW_AT_specification though, that will take us back up | |
15776 | the chain and we want to go down. */ | |
45e58e77 | 15777 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
15778 | if (attr) |
15779 | { | |
ac9ec31b | 15780 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 15781 | |
ac9ec31b | 15782 | /* The type's CU may not be the same as CU. |
02142a6c | 15783 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
15784 | return set_die_type (die, type, cu); |
15785 | } | |
15786 | ||
c0dd20ea | 15787 | type = alloc_type (objfile); |
c906108c | 15788 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 15789 | |
39cbfefa DJ |
15790 | name = dwarf2_name (die, cu); |
15791 | if (name != NULL) | |
c906108c | 15792 | { |
987504bb | 15793 | if (cu->language == language_cplus |
c44af4eb TT |
15794 | || cu->language == language_d |
15795 | || cu->language == language_rust) | |
63d06c5c | 15796 | { |
15d034d0 | 15797 | const char *full_name = dwarf2_full_name (name, die, cu); |
3da10d80 KS |
15798 | |
15799 | /* dwarf2_full_name might have already finished building the DIE's | |
15800 | type. If so, there is no need to continue. */ | |
15801 | if (get_die_type (die, cu) != NULL) | |
15802 | return get_die_type (die, cu); | |
15803 | ||
e86ca25f | 15804 | TYPE_NAME (type) = full_name; |
63d06c5c DC |
15805 | } |
15806 | else | |
15807 | { | |
d8151005 DJ |
15808 | /* The name is already allocated along with this objfile, so |
15809 | we don't need to duplicate it for the type. */ | |
e86ca25f | 15810 | TYPE_NAME (type) = name; |
63d06c5c | 15811 | } |
c906108c SS |
15812 | } |
15813 | ||
15814 | if (die->tag == DW_TAG_structure_type) | |
15815 | { | |
15816 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
15817 | } | |
15818 | else if (die->tag == DW_TAG_union_type) | |
15819 | { | |
15820 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
15821 | } | |
2ddeaf8a TT |
15822 | else if (die->tag == DW_TAG_variant_part) |
15823 | { | |
15824 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
15825 | TYPE_FLAG_DISCRIMINATED_UNION (type) = 1; | |
15826 | } | |
c906108c SS |
15827 | else |
15828 | { | |
4753d33b | 15829 | TYPE_CODE (type) = TYPE_CODE_STRUCT; |
c906108c SS |
15830 | } |
15831 | ||
0cc2414c TT |
15832 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
15833 | TYPE_DECLARED_CLASS (type) = 1; | |
15834 | ||
e142c38c | 15835 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
15836 | if (attr) |
15837 | { | |
155bfbd3 JB |
15838 | if (attr_form_is_constant (attr)) |
15839 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
15840 | else | |
15841 | { | |
15842 | /* For the moment, dynamic type sizes are not supported | |
15843 | by GDB's struct type. The actual size is determined | |
15844 | on-demand when resolving the type of a given object, | |
15845 | so set the type's length to zero for now. Otherwise, | |
15846 | we record an expression as the length, and that expression | |
15847 | could lead to a very large value, which could eventually | |
15848 | lead to us trying to allocate that much memory when creating | |
15849 | a value of that type. */ | |
15850 | TYPE_LENGTH (type) = 0; | |
15851 | } | |
c906108c SS |
15852 | } |
15853 | else | |
15854 | { | |
15855 | TYPE_LENGTH (type) = 0; | |
15856 | } | |
15857 | ||
2b4424c3 TT |
15858 | maybe_set_alignment (cu, die, type); |
15859 | ||
5230b05a | 15860 | if (producer_is_icc_lt_14 (cu) && (TYPE_LENGTH (type) == 0)) |
685b1105 | 15861 | { |
5230b05a WT |
15862 | /* ICC<14 does not output the required DW_AT_declaration on |
15863 | incomplete types, but gives them a size of zero. */ | |
422b1cb0 | 15864 | TYPE_STUB (type) = 1; |
685b1105 JK |
15865 | } |
15866 | else | |
15867 | TYPE_STUB_SUPPORTED (type) = 1; | |
15868 | ||
dc718098 | 15869 | if (die_is_declaration (die, cu)) |
876cecd0 | 15870 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
15871 | else if (attr == NULL && die->child == NULL |
15872 | && producer_is_realview (cu->producer)) | |
15873 | /* RealView does not output the required DW_AT_declaration | |
15874 | on incomplete types. */ | |
15875 | TYPE_STUB (type) = 1; | |
dc718098 | 15876 | |
c906108c SS |
15877 | /* We need to add the type field to the die immediately so we don't |
15878 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 15879 | type within the structure itself. */ |
1c379e20 | 15880 | set_die_type (die, type, cu); |
c906108c | 15881 | |
7e314c57 JK |
15882 | /* set_die_type should be already done. */ |
15883 | set_descriptive_type (type, die, cu); | |
15884 | ||
c767944b DJ |
15885 | return type; |
15886 | } | |
15887 | ||
2ddeaf8a TT |
15888 | /* A helper for process_structure_scope that handles a single member |
15889 | DIE. */ | |
15890 | ||
15891 | static void | |
15892 | handle_struct_member_die (struct die_info *child_die, struct type *type, | |
15893 | struct field_info *fi, | |
15894 | std::vector<struct symbol *> *template_args, | |
15895 | struct dwarf2_cu *cu) | |
15896 | { | |
15897 | if (child_die->tag == DW_TAG_member | |
15898 | || child_die->tag == DW_TAG_variable | |
15899 | || child_die->tag == DW_TAG_variant_part) | |
15900 | { | |
15901 | /* NOTE: carlton/2002-11-05: A C++ static data member | |
15902 | should be a DW_TAG_member that is a declaration, but | |
15903 | all versions of G++ as of this writing (so through at | |
15904 | least 3.2.1) incorrectly generate DW_TAG_variable | |
15905 | tags for them instead. */ | |
15906 | dwarf2_add_field (fi, child_die, cu); | |
15907 | } | |
15908 | else if (child_die->tag == DW_TAG_subprogram) | |
15909 | { | |
15910 | /* Rust doesn't have member functions in the C++ sense. | |
15911 | However, it does emit ordinary functions as children | |
15912 | of a struct DIE. */ | |
15913 | if (cu->language == language_rust) | |
15914 | read_func_scope (child_die, cu); | |
15915 | else | |
15916 | { | |
15917 | /* C++ member function. */ | |
15918 | dwarf2_add_member_fn (fi, child_die, type, cu); | |
15919 | } | |
15920 | } | |
15921 | else if (child_die->tag == DW_TAG_inheritance) | |
15922 | { | |
15923 | /* C++ base class field. */ | |
15924 | dwarf2_add_field (fi, child_die, cu); | |
15925 | } | |
15926 | else if (type_can_define_types (child_die)) | |
15927 | dwarf2_add_type_defn (fi, child_die, cu); | |
15928 | else if (child_die->tag == DW_TAG_template_type_param | |
15929 | || child_die->tag == DW_TAG_template_value_param) | |
15930 | { | |
15931 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
15932 | ||
15933 | if (arg != NULL) | |
15934 | template_args->push_back (arg); | |
15935 | } | |
15936 | else if (child_die->tag == DW_TAG_variant) | |
15937 | { | |
15938 | /* In a variant we want to get the discriminant and also add a | |
15939 | field for our sole member child. */ | |
15940 | struct attribute *discr = dwarf2_attr (child_die, DW_AT_discr_value, cu); | |
15941 | ||
15942 | for (struct die_info *variant_child = child_die->child; | |
15943 | variant_child != NULL; | |
15944 | variant_child = sibling_die (variant_child)) | |
15945 | { | |
15946 | if (variant_child->tag == DW_TAG_member) | |
15947 | { | |
15948 | handle_struct_member_die (variant_child, type, fi, | |
15949 | template_args, cu); | |
15950 | /* Only handle the one. */ | |
15951 | break; | |
15952 | } | |
15953 | } | |
15954 | ||
15955 | /* We don't handle this but we might as well report it if we see | |
15956 | it. */ | |
15957 | if (dwarf2_attr (child_die, DW_AT_discr_list, cu) != nullptr) | |
b98664d3 | 15958 | complaint (_("DW_AT_discr_list is not supported yet" |
2ddeaf8a TT |
15959 | " - DIE at %s [in module %s]"), |
15960 | sect_offset_str (child_die->sect_off), | |
15961 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15962 | ||
15963 | /* The first field was just added, so we can stash the | |
15964 | discriminant there. */ | |
be2daae6 | 15965 | gdb_assert (!fi->fields.empty ()); |
2ddeaf8a | 15966 | if (discr == NULL) |
be2daae6 | 15967 | fi->fields.back ().variant.default_branch = true; |
2ddeaf8a | 15968 | else |
be2daae6 | 15969 | fi->fields.back ().variant.discriminant_value = DW_UNSND (discr); |
2ddeaf8a TT |
15970 | } |
15971 | } | |
15972 | ||
c767944b DJ |
15973 | /* Finish creating a structure or union type, including filling in |
15974 | its members and creating a symbol for it. */ | |
15975 | ||
15976 | static void | |
15977 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
15978 | { | |
518817b3 | 15979 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
ca040673 | 15980 | struct die_info *child_die; |
c767944b DJ |
15981 | struct type *type; |
15982 | ||
15983 | type = get_die_type (die, cu); | |
15984 | if (type == NULL) | |
15985 | type = read_structure_type (die, cu); | |
15986 | ||
2ddeaf8a TT |
15987 | /* When reading a DW_TAG_variant_part, we need to notice when we |
15988 | read the discriminant member, so we can record it later in the | |
15989 | discriminant_info. */ | |
15990 | bool is_variant_part = TYPE_FLAG_DISCRIMINATED_UNION (type); | |
15991 | sect_offset discr_offset; | |
3e1d3d8c | 15992 | bool has_template_parameters = false; |
2ddeaf8a TT |
15993 | |
15994 | if (is_variant_part) | |
15995 | { | |
15996 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr, cu); | |
15997 | if (discr == NULL) | |
15998 | { | |
15999 | /* Maybe it's a univariant form, an extension we support. | |
16000 | In this case arrange not to check the offset. */ | |
16001 | is_variant_part = false; | |
16002 | } | |
16003 | else if (attr_form_is_ref (discr)) | |
16004 | { | |
16005 | struct dwarf2_cu *target_cu = cu; | |
16006 | struct die_info *target_die = follow_die_ref (die, discr, &target_cu); | |
16007 | ||
16008 | discr_offset = target_die->sect_off; | |
16009 | } | |
16010 | else | |
16011 | { | |
b98664d3 | 16012 | complaint (_("DW_AT_discr does not have DIE reference form" |
2ddeaf8a TT |
16013 | " - DIE at %s [in module %s]"), |
16014 | sect_offset_str (die->sect_off), | |
16015 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
16016 | is_variant_part = false; | |
16017 | } | |
16018 | } | |
16019 | ||
e142c38c | 16020 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
16021 | { |
16022 | struct field_info fi; | |
2f4732b0 | 16023 | std::vector<struct symbol *> template_args; |
c906108c | 16024 | |
639d11d3 | 16025 | child_die = die->child; |
c906108c SS |
16026 | |
16027 | while (child_die && child_die->tag) | |
16028 | { | |
2ddeaf8a | 16029 | handle_struct_member_die (child_die, type, &fi, &template_args, cu); |
34eaf542 | 16030 | |
2ddeaf8a | 16031 | if (is_variant_part && discr_offset == child_die->sect_off) |
be2daae6 | 16032 | fi.fields.back ().variant.is_discriminant = true; |
34eaf542 | 16033 | |
c906108c SS |
16034 | child_die = sibling_die (child_die); |
16035 | } | |
16036 | ||
34eaf542 | 16037 | /* Attach template arguments to type. */ |
2f4732b0 | 16038 | if (!template_args.empty ()) |
34eaf542 | 16039 | { |
3e1d3d8c | 16040 | has_template_parameters = true; |
34eaf542 | 16041 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
2f4732b0 | 16042 | TYPE_N_TEMPLATE_ARGUMENTS (type) = template_args.size (); |
34eaf542 | 16043 | TYPE_TEMPLATE_ARGUMENTS (type) |
8d749320 SM |
16044 | = XOBNEWVEC (&objfile->objfile_obstack, |
16045 | struct symbol *, | |
16046 | TYPE_N_TEMPLATE_ARGUMENTS (type)); | |
34eaf542 | 16047 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), |
2f4732b0 | 16048 | template_args.data (), |
34eaf542 TT |
16049 | (TYPE_N_TEMPLATE_ARGUMENTS (type) |
16050 | * sizeof (struct symbol *))); | |
34eaf542 TT |
16051 | } |
16052 | ||
c906108c SS |
16053 | /* Attach fields and member functions to the type. */ |
16054 | if (fi.nfields) | |
e7c27a73 | 16055 | dwarf2_attach_fields_to_type (&fi, type, cu); |
be2daae6 | 16056 | if (!fi.fnfieldlists.empty ()) |
c906108c | 16057 | { |
e7c27a73 | 16058 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 16059 | |
c5aa993b | 16060 | /* Get the type which refers to the base class (possibly this |
c906108c | 16061 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
16062 | class from the DW_AT_containing_type attribute. This use of |
16063 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 16064 | |
e142c38c | 16065 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 16066 | { |
e7c27a73 | 16067 | struct type *t = die_containing_type (die, cu); |
c906108c | 16068 | |
ae6ae975 | 16069 | set_type_vptr_basetype (type, t); |
c906108c SS |
16070 | if (type == t) |
16071 | { | |
c906108c SS |
16072 | int i; |
16073 | ||
16074 | /* Our own class provides vtbl ptr. */ | |
16075 | for (i = TYPE_NFIELDS (t) - 1; | |
16076 | i >= TYPE_N_BASECLASSES (t); | |
16077 | --i) | |
16078 | { | |
0d5cff50 | 16079 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 16080 | |
1168df01 | 16081 | if (is_vtable_name (fieldname, cu)) |
c906108c | 16082 | { |
ae6ae975 | 16083 | set_type_vptr_fieldno (type, i); |
c906108c SS |
16084 | break; |
16085 | } | |
16086 | } | |
16087 | ||
16088 | /* Complain if virtual function table field not found. */ | |
16089 | if (i < TYPE_N_BASECLASSES (t)) | |
b98664d3 | 16090 | complaint (_("virtual function table pointer " |
3e43a32a | 16091 | "not found when defining class '%s'"), |
e86ca25f | 16092 | TYPE_NAME (type) ? TYPE_NAME (type) : ""); |
c906108c SS |
16093 | } |
16094 | else | |
16095 | { | |
ae6ae975 | 16096 | set_type_vptr_fieldno (type, TYPE_VPTR_FIELDNO (t)); |
c906108c SS |
16097 | } |
16098 | } | |
f6235d4c | 16099 | else if (cu->producer |
61012eef | 16100 | && startswith (cu->producer, "IBM(R) XL C/C++ Advanced Edition")) |
f6235d4c EZ |
16101 | { |
16102 | /* The IBM XLC compiler does not provide direct indication | |
16103 | of the containing type, but the vtable pointer is | |
16104 | always named __vfp. */ | |
16105 | ||
16106 | int i; | |
16107 | ||
16108 | for (i = TYPE_NFIELDS (type) - 1; | |
16109 | i >= TYPE_N_BASECLASSES (type); | |
16110 | --i) | |
16111 | { | |
16112 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
16113 | { | |
ae6ae975 DE |
16114 | set_type_vptr_fieldno (type, i); |
16115 | set_type_vptr_basetype (type, type); | |
f6235d4c EZ |
16116 | break; |
16117 | } | |
16118 | } | |
16119 | } | |
c906108c | 16120 | } |
98751a41 JK |
16121 | |
16122 | /* Copy fi.typedef_field_list linked list elements content into the | |
16123 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
be2daae6 | 16124 | if (!fi.typedef_field_list.empty ()) |
98751a41 | 16125 | { |
be2daae6 | 16126 | int count = fi.typedef_field_list.size (); |
98751a41 | 16127 | |
a0d7a4ff | 16128 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 | 16129 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
883fd55a | 16130 | = ((struct decl_field *) |
be2daae6 TT |
16131 | TYPE_ALLOC (type, |
16132 | sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * count)); | |
16133 | TYPE_TYPEDEF_FIELD_COUNT (type) = count; | |
6e70227d | 16134 | |
be2daae6 TT |
16135 | for (int i = 0; i < fi.typedef_field_list.size (); ++i) |
16136 | TYPE_TYPEDEF_FIELD (type, i) = fi.typedef_field_list[i]; | |
98751a41 | 16137 | } |
c767944b | 16138 | |
883fd55a KS |
16139 | /* Copy fi.nested_types_list linked list elements content into the |
16140 | allocated array TYPE_NESTED_TYPES_ARRAY (type). */ | |
be2daae6 | 16141 | if (!fi.nested_types_list.empty () && cu->language != language_ada) |
883fd55a | 16142 | { |
be2daae6 | 16143 | int count = fi.nested_types_list.size (); |
883fd55a KS |
16144 | |
16145 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
16146 | TYPE_NESTED_TYPES_ARRAY (type) | |
16147 | = ((struct decl_field *) | |
be2daae6 TT |
16148 | TYPE_ALLOC (type, sizeof (struct decl_field) * count)); |
16149 | TYPE_NESTED_TYPES_COUNT (type) = count; | |
883fd55a | 16150 | |
be2daae6 TT |
16151 | for (int i = 0; i < fi.nested_types_list.size (); ++i) |
16152 | TYPE_NESTED_TYPES_FIELD (type, i) = fi.nested_types_list[i]; | |
883fd55a | 16153 | } |
c906108c | 16154 | } |
63d06c5c | 16155 | |
bb5ed363 | 16156 | quirk_gcc_member_function_pointer (type, objfile); |
c9317f21 TT |
16157 | if (cu->language == language_rust && die->tag == DW_TAG_union_type) |
16158 | cu->rust_unions.push_back (type); | |
0b92b5bb | 16159 | |
90aeadfc DC |
16160 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
16161 | snapshots) has been known to create a die giving a declaration | |
16162 | for a class that has, as a child, a die giving a definition for a | |
16163 | nested class. So we have to process our children even if the | |
16164 | current die is a declaration. Normally, of course, a declaration | |
16165 | won't have any children at all. */ | |
134d01f1 | 16166 | |
ca040673 DE |
16167 | child_die = die->child; |
16168 | ||
90aeadfc DC |
16169 | while (child_die != NULL && child_die->tag) |
16170 | { | |
16171 | if (child_die->tag == DW_TAG_member | |
16172 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
16173 | || child_die->tag == DW_TAG_inheritance |
16174 | || child_die->tag == DW_TAG_template_value_param | |
16175 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 16176 | { |
90aeadfc | 16177 | /* Do nothing. */ |
134d01f1 | 16178 | } |
90aeadfc DC |
16179 | else |
16180 | process_die (child_die, cu); | |
134d01f1 | 16181 | |
90aeadfc | 16182 | child_die = sibling_die (child_die); |
134d01f1 DJ |
16183 | } |
16184 | ||
fa4028e9 JB |
16185 | /* Do not consider external references. According to the DWARF standard, |
16186 | these DIEs are identified by the fact that they have no byte_size | |
16187 | attribute, and a declaration attribute. */ | |
16188 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
16189 | || !die_is_declaration (die, cu)) | |
3e1d3d8c TT |
16190 | { |
16191 | struct symbol *sym = new_symbol (die, type, cu); | |
16192 | ||
16193 | if (has_template_parameters) | |
16194 | { | |
16195 | /* Make sure that the symtab is set on the new symbols. | |
16196 | Even though they don't appear in this symtab directly, | |
16197 | other parts of gdb assume that symbols do, and this is | |
16198 | reasonably true. */ | |
16199 | for (int i = 0; i < TYPE_N_TEMPLATE_ARGUMENTS (type); ++i) | |
16200 | symbol_set_symtab (TYPE_TEMPLATE_ARGUMENT (type, i), | |
16201 | symbol_symtab (sym)); | |
16202 | } | |
16203 | } | |
134d01f1 DJ |
16204 | } |
16205 | ||
55426c9d JB |
16206 | /* Assuming DIE is an enumeration type, and TYPE is its associated type, |
16207 | update TYPE using some information only available in DIE's children. */ | |
16208 | ||
16209 | static void | |
16210 | update_enumeration_type_from_children (struct die_info *die, | |
16211 | struct type *type, | |
16212 | struct dwarf2_cu *cu) | |
16213 | { | |
60f7655a | 16214 | struct die_info *child_die; |
55426c9d JB |
16215 | int unsigned_enum = 1; |
16216 | int flag_enum = 1; | |
16217 | ULONGEST mask = 0; | |
55426c9d | 16218 | |
8268c778 | 16219 | auto_obstack obstack; |
55426c9d | 16220 | |
60f7655a DE |
16221 | for (child_die = die->child; |
16222 | child_die != NULL && child_die->tag; | |
16223 | child_die = sibling_die (child_die)) | |
55426c9d JB |
16224 | { |
16225 | struct attribute *attr; | |
16226 | LONGEST value; | |
16227 | const gdb_byte *bytes; | |
16228 | struct dwarf2_locexpr_baton *baton; | |
16229 | const char *name; | |
60f7655a | 16230 | |
55426c9d JB |
16231 | if (child_die->tag != DW_TAG_enumerator) |
16232 | continue; | |
16233 | ||
16234 | attr = dwarf2_attr (child_die, DW_AT_const_value, cu); | |
16235 | if (attr == NULL) | |
16236 | continue; | |
16237 | ||
16238 | name = dwarf2_name (child_die, cu); | |
16239 | if (name == NULL) | |
16240 | name = "<anonymous enumerator>"; | |
16241 | ||
16242 | dwarf2_const_value_attr (attr, type, name, &obstack, cu, | |
16243 | &value, &bytes, &baton); | |
16244 | if (value < 0) | |
16245 | { | |
16246 | unsigned_enum = 0; | |
16247 | flag_enum = 0; | |
16248 | } | |
16249 | else if ((mask & value) != 0) | |
16250 | flag_enum = 0; | |
16251 | else | |
16252 | mask |= value; | |
16253 | ||
16254 | /* If we already know that the enum type is neither unsigned, nor | |
16255 | a flag type, no need to look at the rest of the enumerates. */ | |
16256 | if (!unsigned_enum && !flag_enum) | |
16257 | break; | |
55426c9d JB |
16258 | } |
16259 | ||
16260 | if (unsigned_enum) | |
16261 | TYPE_UNSIGNED (type) = 1; | |
16262 | if (flag_enum) | |
16263 | TYPE_FLAG_ENUM (type) = 1; | |
55426c9d JB |
16264 | } |
16265 | ||
134d01f1 DJ |
16266 | /* Given a DW_AT_enumeration_type die, set its type. We do not |
16267 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 16268 | |
f792889a | 16269 | static struct type * |
134d01f1 | 16270 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16271 | { |
518817b3 | 16272 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 16273 | struct type *type; |
c906108c | 16274 | struct attribute *attr; |
0114d602 | 16275 | const char *name; |
134d01f1 | 16276 | |
348e048f DE |
16277 | /* If the definition of this type lives in .debug_types, read that type. |
16278 | Don't follow DW_AT_specification though, that will take us back up | |
16279 | the chain and we want to go down. */ | |
45e58e77 | 16280 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
16281 | if (attr) |
16282 | { | |
ac9ec31b | 16283 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 16284 | |
ac9ec31b | 16285 | /* The type's CU may not be the same as CU. |
02142a6c | 16286 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
16287 | return set_die_type (die, type, cu); |
16288 | } | |
16289 | ||
c906108c SS |
16290 | type = alloc_type (objfile); |
16291 | ||
16292 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
94af9270 | 16293 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 16294 | if (name != NULL) |
e86ca25f | 16295 | TYPE_NAME (type) = name; |
c906108c | 16296 | |
0626fc76 TT |
16297 | attr = dwarf2_attr (die, DW_AT_type, cu); |
16298 | if (attr != NULL) | |
16299 | { | |
16300 | struct type *underlying_type = die_type (die, cu); | |
16301 | ||
16302 | TYPE_TARGET_TYPE (type) = underlying_type; | |
16303 | } | |
16304 | ||
e142c38c | 16305 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
16306 | if (attr) |
16307 | { | |
16308 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16309 | } | |
16310 | else | |
16311 | { | |
16312 | TYPE_LENGTH (type) = 0; | |
16313 | } | |
16314 | ||
2b4424c3 TT |
16315 | maybe_set_alignment (cu, die, type); |
16316 | ||
137033e9 JB |
16317 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
16318 | declared as private in the package spec, and then defined only | |
16319 | inside the package body. Such types are known as Taft Amendment | |
16320 | Types. When another package uses such a type, an incomplete DIE | |
16321 | may be generated by the compiler. */ | |
02eb380e | 16322 | if (die_is_declaration (die, cu)) |
876cecd0 | 16323 | TYPE_STUB (type) = 1; |
02eb380e | 16324 | |
0626fc76 TT |
16325 | /* Finish the creation of this type by using the enum's children. |
16326 | We must call this even when the underlying type has been provided | |
16327 | so that we can determine if we're looking at a "flag" enum. */ | |
55426c9d JB |
16328 | update_enumeration_type_from_children (die, type, cu); |
16329 | ||
0626fc76 TT |
16330 | /* If this type has an underlying type that is not a stub, then we |
16331 | may use its attributes. We always use the "unsigned" attribute | |
16332 | in this situation, because ordinarily we guess whether the type | |
16333 | is unsigned -- but the guess can be wrong and the underlying type | |
16334 | can tell us the reality. However, we defer to a local size | |
16335 | attribute if one exists, because this lets the compiler override | |
16336 | the underlying type if needed. */ | |
16337 | if (TYPE_TARGET_TYPE (type) != NULL && !TYPE_STUB (TYPE_TARGET_TYPE (type))) | |
16338 | { | |
16339 | TYPE_UNSIGNED (type) = TYPE_UNSIGNED (TYPE_TARGET_TYPE (type)); | |
16340 | if (TYPE_LENGTH (type) == 0) | |
16341 | TYPE_LENGTH (type) = TYPE_LENGTH (TYPE_TARGET_TYPE (type)); | |
2b4424c3 TT |
16342 | if (TYPE_RAW_ALIGN (type) == 0 |
16343 | && TYPE_RAW_ALIGN (TYPE_TARGET_TYPE (type)) != 0) | |
16344 | set_type_align (type, TYPE_RAW_ALIGN (TYPE_TARGET_TYPE (type))); | |
0626fc76 TT |
16345 | } |
16346 | ||
3d567982 TT |
16347 | TYPE_DECLARED_CLASS (type) = dwarf2_flag_true_p (die, DW_AT_enum_class, cu); |
16348 | ||
f792889a | 16349 | return set_die_type (die, type, cu); |
134d01f1 DJ |
16350 | } |
16351 | ||
16352 | /* Given a pointer to a die which begins an enumeration, process all | |
16353 | the dies that define the members of the enumeration, and create the | |
16354 | symbol for the enumeration type. | |
16355 | ||
16356 | NOTE: We reverse the order of the element list. */ | |
16357 | ||
16358 | static void | |
16359 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
16360 | { | |
f792889a | 16361 | struct type *this_type; |
134d01f1 | 16362 | |
f792889a DJ |
16363 | this_type = get_die_type (die, cu); |
16364 | if (this_type == NULL) | |
16365 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 16366 | |
639d11d3 | 16367 | if (die->child != NULL) |
c906108c | 16368 | { |
9dc481d3 DE |
16369 | struct die_info *child_die; |
16370 | struct symbol *sym; | |
16371 | struct field *fields = NULL; | |
16372 | int num_fields = 0; | |
15d034d0 | 16373 | const char *name; |
9dc481d3 | 16374 | |
639d11d3 | 16375 | child_die = die->child; |
c906108c SS |
16376 | while (child_die && child_die->tag) |
16377 | { | |
16378 | if (child_die->tag != DW_TAG_enumerator) | |
16379 | { | |
e7c27a73 | 16380 | process_die (child_die, cu); |
c906108c SS |
16381 | } |
16382 | else | |
16383 | { | |
39cbfefa DJ |
16384 | name = dwarf2_name (child_die, cu); |
16385 | if (name) | |
c906108c | 16386 | { |
f792889a | 16387 | sym = new_symbol (child_die, this_type, cu); |
c906108c SS |
16388 | |
16389 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
16390 | { | |
16391 | fields = (struct field *) | |
16392 | xrealloc (fields, | |
16393 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 16394 | * sizeof (struct field)); |
c906108c SS |
16395 | } |
16396 | ||
3567439c | 16397 | FIELD_NAME (fields[num_fields]) = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 16398 | FIELD_TYPE (fields[num_fields]) = NULL; |
14e75d8e | 16399 | SET_FIELD_ENUMVAL (fields[num_fields], SYMBOL_VALUE (sym)); |
c906108c SS |
16400 | FIELD_BITSIZE (fields[num_fields]) = 0; |
16401 | ||
16402 | num_fields++; | |
16403 | } | |
16404 | } | |
16405 | ||
16406 | child_die = sibling_die (child_die); | |
16407 | } | |
16408 | ||
16409 | if (num_fields) | |
16410 | { | |
f792889a DJ |
16411 | TYPE_NFIELDS (this_type) = num_fields; |
16412 | TYPE_FIELDS (this_type) = (struct field *) | |
16413 | TYPE_ALLOC (this_type, sizeof (struct field) * num_fields); | |
16414 | memcpy (TYPE_FIELDS (this_type), fields, | |
c906108c | 16415 | sizeof (struct field) * num_fields); |
b8c9b27d | 16416 | xfree (fields); |
c906108c | 16417 | } |
c906108c | 16418 | } |
134d01f1 | 16419 | |
6c83ed52 TT |
16420 | /* If we are reading an enum from a .debug_types unit, and the enum |
16421 | is a declaration, and the enum is not the signatured type in the | |
16422 | unit, then we do not want to add a symbol for it. Adding a | |
16423 | symbol would in some cases obscure the true definition of the | |
16424 | enum, giving users an incomplete type when the definition is | |
16425 | actually available. Note that we do not want to do this for all | |
16426 | enums which are just declarations, because C++0x allows forward | |
16427 | enum declarations. */ | |
3019eac3 | 16428 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
16429 | && die_is_declaration (die, cu)) |
16430 | { | |
52dc124a | 16431 | struct signatured_type *sig_type; |
6c83ed52 | 16432 | |
c0f78cd4 | 16433 | sig_type = (struct signatured_type *) cu->per_cu; |
9c541725 PA |
16434 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
16435 | if (sig_type->type_offset_in_section != die->sect_off) | |
6c83ed52 TT |
16436 | return; |
16437 | } | |
16438 | ||
f792889a | 16439 | new_symbol (die, this_type, cu); |
c906108c SS |
16440 | } |
16441 | ||
16442 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
16443 | the DIE's type field. For now, this only handles one dimensional | |
16444 | arrays. */ | |
16445 | ||
f792889a | 16446 | static struct type * |
e7c27a73 | 16447 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16448 | { |
518817b3 | 16449 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 16450 | struct die_info *child_die; |
7e314c57 | 16451 | struct type *type; |
c906108c | 16452 | struct type *element_type, *range_type, *index_type; |
c906108c | 16453 | struct attribute *attr; |
15d034d0 | 16454 | const char *name; |
a405673c | 16455 | struct dynamic_prop *byte_stride_prop = NULL; |
dc53a7ad | 16456 | unsigned int bit_stride = 0; |
c906108c | 16457 | |
e7c27a73 | 16458 | element_type = die_type (die, cu); |
c906108c | 16459 | |
7e314c57 JK |
16460 | /* The die_type call above may have already set the type for this DIE. */ |
16461 | type = get_die_type (die, cu); | |
16462 | if (type) | |
16463 | return type; | |
16464 | ||
dc53a7ad JB |
16465 | attr = dwarf2_attr (die, DW_AT_byte_stride, cu); |
16466 | if (attr != NULL) | |
a405673c JB |
16467 | { |
16468 | int stride_ok; | |
16469 | ||
16470 | byte_stride_prop | |
16471 | = (struct dynamic_prop *) alloca (sizeof (struct dynamic_prop)); | |
16472 | stride_ok = attr_to_dynamic_prop (attr, die, cu, byte_stride_prop); | |
16473 | if (!stride_ok) | |
16474 | { | |
b98664d3 | 16475 | complaint (_("unable to read array DW_AT_byte_stride " |
9d8780f0 SM |
16476 | " - DIE at %s [in module %s]"), |
16477 | sect_offset_str (die->sect_off), | |
518817b3 | 16478 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
a405673c JB |
16479 | /* Ignore this attribute. We will likely not be able to print |
16480 | arrays of this type correctly, but there is little we can do | |
16481 | to help if we cannot read the attribute's value. */ | |
16482 | byte_stride_prop = NULL; | |
16483 | } | |
16484 | } | |
dc53a7ad JB |
16485 | |
16486 | attr = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
16487 | if (attr != NULL) | |
16488 | bit_stride = DW_UNSND (attr); | |
16489 | ||
c906108c SS |
16490 | /* Irix 6.2 native cc creates array types without children for |
16491 | arrays with unspecified length. */ | |
639d11d3 | 16492 | if (die->child == NULL) |
c906108c | 16493 | { |
46bf5051 | 16494 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 16495 | range_type = create_static_range_type (NULL, index_type, 0, -1); |
dc53a7ad | 16496 | type = create_array_type_with_stride (NULL, element_type, range_type, |
a405673c | 16497 | byte_stride_prop, bit_stride); |
f792889a | 16498 | return set_die_type (die, type, cu); |
c906108c SS |
16499 | } |
16500 | ||
791afaa2 | 16501 | std::vector<struct type *> range_types; |
639d11d3 | 16502 | child_die = die->child; |
c906108c SS |
16503 | while (child_die && child_die->tag) |
16504 | { | |
16505 | if (child_die->tag == DW_TAG_subrange_type) | |
16506 | { | |
f792889a | 16507 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 16508 | |
f792889a | 16509 | if (child_type != NULL) |
a02abb62 | 16510 | { |
0963b4bd MS |
16511 | /* The range type was succesfully read. Save it for the |
16512 | array type creation. */ | |
791afaa2 | 16513 | range_types.push_back (child_type); |
a02abb62 | 16514 | } |
c906108c SS |
16515 | } |
16516 | child_die = sibling_die (child_die); | |
16517 | } | |
16518 | ||
16519 | /* Dwarf2 dimensions are output from left to right, create the | |
16520 | necessary array types in backwards order. */ | |
7ca2d3a3 | 16521 | |
c906108c | 16522 | type = element_type; |
7ca2d3a3 DL |
16523 | |
16524 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
16525 | { | |
16526 | int i = 0; | |
9a619af0 | 16527 | |
791afaa2 | 16528 | while (i < range_types.size ()) |
dc53a7ad | 16529 | type = create_array_type_with_stride (NULL, type, range_types[i++], |
a405673c | 16530 | byte_stride_prop, bit_stride); |
7ca2d3a3 DL |
16531 | } |
16532 | else | |
16533 | { | |
791afaa2 | 16534 | size_t ndim = range_types.size (); |
7ca2d3a3 | 16535 | while (ndim-- > 0) |
dc53a7ad | 16536 | type = create_array_type_with_stride (NULL, type, range_types[ndim], |
a405673c | 16537 | byte_stride_prop, bit_stride); |
7ca2d3a3 | 16538 | } |
c906108c | 16539 | |
f5f8a009 EZ |
16540 | /* Understand Dwarf2 support for vector types (like they occur on |
16541 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
16542 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
16543 | custom vendor extension. The main difference between a regular | |
16544 | array and the vector variant is that vectors are passed by value | |
16545 | to functions. */ | |
e142c38c | 16546 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 | 16547 | if (attr) |
ea37ba09 | 16548 | make_vector_type (type); |
f5f8a009 | 16549 | |
dbc98a8b KW |
16550 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
16551 | implementation may choose to implement triple vectors using this | |
16552 | attribute. */ | |
16553 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
16554 | if (attr) | |
16555 | { | |
16556 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
16557 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16558 | else | |
b98664d3 | 16559 | complaint (_("DW_AT_byte_size for array type smaller " |
3e43a32a | 16560 | "than the total size of elements")); |
dbc98a8b KW |
16561 | } |
16562 | ||
39cbfefa DJ |
16563 | name = dwarf2_name (die, cu); |
16564 | if (name) | |
16565 | TYPE_NAME (type) = name; | |
6e70227d | 16566 | |
2b4424c3 TT |
16567 | maybe_set_alignment (cu, die, type); |
16568 | ||
0963b4bd | 16569 | /* Install the type in the die. */ |
7e314c57 JK |
16570 | set_die_type (die, type, cu); |
16571 | ||
16572 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
16573 | set_descriptive_type (type, die, cu); |
16574 | ||
7e314c57 | 16575 | return type; |
c906108c SS |
16576 | } |
16577 | ||
7ca2d3a3 | 16578 | static enum dwarf_array_dim_ordering |
6e70227d | 16579 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
16580 | { |
16581 | struct attribute *attr; | |
16582 | ||
16583 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
16584 | ||
aead7601 SM |
16585 | if (attr) |
16586 | return (enum dwarf_array_dim_ordering) DW_SND (attr); | |
7ca2d3a3 | 16587 | |
0963b4bd MS |
16588 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
16589 | opposite order to the dwarf2 specification, but data is still | |
16590 | laid out as per normal fortran. | |
7ca2d3a3 | 16591 | |
0963b4bd MS |
16592 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
16593 | version checking. */ | |
7ca2d3a3 | 16594 | |
905e0470 PM |
16595 | if (cu->language == language_fortran |
16596 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
16597 | { |
16598 | return DW_ORD_row_major; | |
16599 | } | |
16600 | ||
6e70227d | 16601 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
16602 | { |
16603 | case array_column_major: | |
16604 | return DW_ORD_col_major; | |
16605 | case array_row_major: | |
16606 | default: | |
16607 | return DW_ORD_row_major; | |
16608 | }; | |
16609 | } | |
16610 | ||
72019c9c | 16611 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 16612 | the DIE's type field. */ |
72019c9c | 16613 | |
f792889a | 16614 | static struct type * |
72019c9c GM |
16615 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
16616 | { | |
7e314c57 JK |
16617 | struct type *domain_type, *set_type; |
16618 | struct attribute *attr; | |
f792889a | 16619 | |
7e314c57 JK |
16620 | domain_type = die_type (die, cu); |
16621 | ||
16622 | /* The die_type call above may have already set the type for this DIE. */ | |
16623 | set_type = get_die_type (die, cu); | |
16624 | if (set_type) | |
16625 | return set_type; | |
16626 | ||
16627 | set_type = create_set_type (NULL, domain_type); | |
16628 | ||
16629 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
d09039dd PM |
16630 | if (attr) |
16631 | TYPE_LENGTH (set_type) = DW_UNSND (attr); | |
7e314c57 | 16632 | |
2b4424c3 TT |
16633 | maybe_set_alignment (cu, die, set_type); |
16634 | ||
f792889a | 16635 | return set_die_type (die, set_type, cu); |
72019c9c | 16636 | } |
7ca2d3a3 | 16637 | |
0971de02 TT |
16638 | /* A helper for read_common_block that creates a locexpr baton. |
16639 | SYM is the symbol which we are marking as computed. | |
16640 | COMMON_DIE is the DIE for the common block. | |
16641 | COMMON_LOC is the location expression attribute for the common | |
16642 | block itself. | |
16643 | MEMBER_LOC is the location expression attribute for the particular | |
16644 | member of the common block that we are processing. | |
16645 | CU is the CU from which the above come. */ | |
16646 | ||
16647 | static void | |
16648 | mark_common_block_symbol_computed (struct symbol *sym, | |
16649 | struct die_info *common_die, | |
16650 | struct attribute *common_loc, | |
16651 | struct attribute *member_loc, | |
16652 | struct dwarf2_cu *cu) | |
16653 | { | |
518817b3 SM |
16654 | struct dwarf2_per_objfile *dwarf2_per_objfile |
16655 | = cu->per_cu->dwarf2_per_objfile; | |
0971de02 TT |
16656 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
16657 | struct dwarf2_locexpr_baton *baton; | |
16658 | gdb_byte *ptr; | |
16659 | unsigned int cu_off; | |
16660 | enum bfd_endian byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
16661 | LONGEST offset = 0; | |
16662 | ||
16663 | gdb_assert (common_loc && member_loc); | |
16664 | gdb_assert (attr_form_is_block (common_loc)); | |
16665 | gdb_assert (attr_form_is_block (member_loc) | |
16666 | || attr_form_is_constant (member_loc)); | |
16667 | ||
8d749320 | 16668 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
0971de02 TT |
16669 | baton->per_cu = cu->per_cu; |
16670 | gdb_assert (baton->per_cu); | |
16671 | ||
16672 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
16673 | ||
16674 | if (attr_form_is_constant (member_loc)) | |
16675 | { | |
16676 | offset = dwarf2_get_attr_constant_value (member_loc, 0); | |
16677 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; | |
16678 | } | |
16679 | else | |
16680 | baton->size += DW_BLOCK (member_loc)->size; | |
16681 | ||
224c3ddb | 16682 | ptr = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, baton->size); |
0971de02 TT |
16683 | baton->data = ptr; |
16684 | ||
16685 | *ptr++ = DW_OP_call4; | |
9c541725 | 16686 | cu_off = common_die->sect_off - cu->per_cu->sect_off; |
0971de02 TT |
16687 | store_unsigned_integer (ptr, 4, byte_order, cu_off); |
16688 | ptr += 4; | |
16689 | ||
16690 | if (attr_form_is_constant (member_loc)) | |
16691 | { | |
16692 | *ptr++ = DW_OP_addr; | |
16693 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
16694 | ptr += cu->header.addr_size; | |
16695 | } | |
16696 | else | |
16697 | { | |
16698 | /* We have to copy the data here, because DW_OP_call4 will only | |
16699 | use a DW_AT_location attribute. */ | |
16700 | memcpy (ptr, DW_BLOCK (member_loc)->data, DW_BLOCK (member_loc)->size); | |
16701 | ptr += DW_BLOCK (member_loc)->size; | |
16702 | } | |
16703 | ||
16704 | *ptr++ = DW_OP_plus; | |
16705 | gdb_assert (ptr - baton->data == baton->size); | |
16706 | ||
0971de02 | 16707 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 16708 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
0971de02 TT |
16709 | } |
16710 | ||
4357ac6c TT |
16711 | /* Create appropriate locally-scoped variables for all the |
16712 | DW_TAG_common_block entries. Also create a struct common_block | |
16713 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
16714 | is used to sepate the common blocks name namespace from regular | |
16715 | variable names. */ | |
c906108c SS |
16716 | |
16717 | static void | |
e7c27a73 | 16718 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16719 | { |
0971de02 TT |
16720 | struct attribute *attr; |
16721 | ||
16722 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
16723 | if (attr) | |
16724 | { | |
16725 | /* Support the .debug_loc offsets. */ | |
16726 | if (attr_form_is_block (attr)) | |
16727 | { | |
16728 | /* Ok. */ | |
16729 | } | |
16730 | else if (attr_form_is_section_offset (attr)) | |
16731 | { | |
16732 | dwarf2_complex_location_expr_complaint (); | |
16733 | attr = NULL; | |
16734 | } | |
16735 | else | |
16736 | { | |
16737 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
16738 | "common block member"); | |
16739 | attr = NULL; | |
16740 | } | |
16741 | } | |
16742 | ||
639d11d3 | 16743 | if (die->child != NULL) |
c906108c | 16744 | { |
518817b3 | 16745 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
4357ac6c TT |
16746 | struct die_info *child_die; |
16747 | size_t n_entries = 0, size; | |
16748 | struct common_block *common_block; | |
16749 | struct symbol *sym; | |
74ac6d43 | 16750 | |
4357ac6c TT |
16751 | for (child_die = die->child; |
16752 | child_die && child_die->tag; | |
16753 | child_die = sibling_die (child_die)) | |
16754 | ++n_entries; | |
16755 | ||
16756 | size = (sizeof (struct common_block) | |
16757 | + (n_entries - 1) * sizeof (struct symbol *)); | |
224c3ddb SM |
16758 | common_block |
16759 | = (struct common_block *) obstack_alloc (&objfile->objfile_obstack, | |
16760 | size); | |
4357ac6c TT |
16761 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); |
16762 | common_block->n_entries = 0; | |
16763 | ||
16764 | for (child_die = die->child; | |
16765 | child_die && child_die->tag; | |
16766 | child_die = sibling_die (child_die)) | |
16767 | { | |
16768 | /* Create the symbol in the DW_TAG_common_block block in the current | |
16769 | symbol scope. */ | |
e7c27a73 | 16770 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
16771 | if (sym != NULL) |
16772 | { | |
16773 | struct attribute *member_loc; | |
16774 | ||
16775 | common_block->contents[common_block->n_entries++] = sym; | |
16776 | ||
16777 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
16778 | cu); | |
16779 | if (member_loc) | |
16780 | { | |
16781 | /* GDB has handled this for a long time, but it is | |
16782 | not specified by DWARF. It seems to have been | |
16783 | emitted by gfortran at least as recently as: | |
16784 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
b98664d3 | 16785 | complaint (_("Variable in common block has " |
0971de02 | 16786 | "DW_AT_data_member_location " |
9d8780f0 SM |
16787 | "- DIE at %s [in module %s]"), |
16788 | sect_offset_str (child_die->sect_off), | |
518817b3 | 16789 | objfile_name (objfile)); |
0971de02 TT |
16790 | |
16791 | if (attr_form_is_section_offset (member_loc)) | |
16792 | dwarf2_complex_location_expr_complaint (); | |
16793 | else if (attr_form_is_constant (member_loc) | |
16794 | || attr_form_is_block (member_loc)) | |
16795 | { | |
16796 | if (attr) | |
16797 | mark_common_block_symbol_computed (sym, die, attr, | |
16798 | member_loc, cu); | |
16799 | } | |
16800 | else | |
16801 | dwarf2_complex_location_expr_complaint (); | |
16802 | } | |
16803 | } | |
c906108c | 16804 | } |
4357ac6c TT |
16805 | |
16806 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
16807 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
16808 | } |
16809 | } | |
16810 | ||
0114d602 | 16811 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 16812 | |
0114d602 DJ |
16813 | static struct type * |
16814 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 16815 | { |
518817b3 | 16816 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 16817 | const char *previous_prefix, *name; |
9219021c | 16818 | int is_anonymous; |
0114d602 DJ |
16819 | struct type *type; |
16820 | ||
16821 | /* For extensions, reuse the type of the original namespace. */ | |
16822 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
16823 | { | |
16824 | struct die_info *ext_die; | |
16825 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 16826 | |
0114d602 DJ |
16827 | ext_die = dwarf2_extension (die, &ext_cu); |
16828 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
16829 | |
16830 | /* EXT_CU may not be the same as CU. | |
02142a6c | 16831 | Ensure TYPE is recorded with CU in die_type_hash. */ |
0114d602 DJ |
16832 | return set_die_type (die, type, cu); |
16833 | } | |
9219021c | 16834 | |
e142c38c | 16835 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
16836 | |
16837 | /* Now build the name of the current namespace. */ | |
16838 | ||
0114d602 DJ |
16839 | previous_prefix = determine_prefix (die, cu); |
16840 | if (previous_prefix[0] != '\0') | |
16841 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 16842 | previous_prefix, name, 0, cu); |
0114d602 DJ |
16843 | |
16844 | /* Create the type. */ | |
19f392bc | 16845 | type = init_type (objfile, TYPE_CODE_NAMESPACE, 0, name); |
0114d602 | 16846 | |
60531b24 | 16847 | return set_die_type (die, type, cu); |
0114d602 DJ |
16848 | } |
16849 | ||
22cee43f | 16850 | /* Read a namespace scope. */ |
0114d602 DJ |
16851 | |
16852 | static void | |
16853 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
16854 | { | |
518817b3 | 16855 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 16856 | int is_anonymous; |
9219021c | 16857 | |
5c4e30ca DC |
16858 | /* Add a symbol associated to this if we haven't seen the namespace |
16859 | before. Also, add a using directive if it's an anonymous | |
16860 | namespace. */ | |
9219021c | 16861 | |
f2f0e013 | 16862 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
16863 | { |
16864 | struct type *type; | |
16865 | ||
0114d602 | 16866 | type = read_type_die (die, cu); |
e7c27a73 | 16867 | new_symbol (die, type, cu); |
5c4e30ca | 16868 | |
e8e80198 | 16869 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 16870 | if (is_anonymous) |
0114d602 DJ |
16871 | { |
16872 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 16873 | |
eb1e02fd | 16874 | std::vector<const char *> excludes; |
804d2729 | 16875 | add_using_directive (using_directives (cu), |
22cee43f | 16876 | previous_prefix, TYPE_NAME (type), NULL, |
eb1e02fd | 16877 | NULL, excludes, 0, &objfile->objfile_obstack); |
0114d602 | 16878 | } |
5c4e30ca | 16879 | } |
9219021c | 16880 | |
639d11d3 | 16881 | if (die->child != NULL) |
d9fa45fe | 16882 | { |
639d11d3 | 16883 | struct die_info *child_die = die->child; |
6e70227d | 16884 | |
d9fa45fe DC |
16885 | while (child_die && child_die->tag) |
16886 | { | |
e7c27a73 | 16887 | process_die (child_die, cu); |
d9fa45fe DC |
16888 | child_die = sibling_die (child_die); |
16889 | } | |
16890 | } | |
38d518c9 EZ |
16891 | } |
16892 | ||
f55ee35c JK |
16893 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
16894 | imported module. Still we need that type as local Fortran "use ... only" | |
16895 | declaration imports depend on the created type in determine_prefix. */ | |
16896 | ||
16897 | static struct type * | |
16898 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
16899 | { | |
518817b3 | 16900 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
15d034d0 | 16901 | const char *module_name; |
f55ee35c JK |
16902 | struct type *type; |
16903 | ||
16904 | module_name = dwarf2_name (die, cu); | |
16905 | if (!module_name) | |
b98664d3 | 16906 | complaint (_("DW_TAG_module has no name, offset %s"), |
9d8780f0 | 16907 | sect_offset_str (die->sect_off)); |
19f392bc | 16908 | type = init_type (objfile, TYPE_CODE_MODULE, 0, module_name); |
f55ee35c | 16909 | |
f55ee35c JK |
16910 | return set_die_type (die, type, cu); |
16911 | } | |
16912 | ||
5d7cb8df JK |
16913 | /* Read a Fortran module. */ |
16914 | ||
16915 | static void | |
16916 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
16917 | { | |
16918 | struct die_info *child_die = die->child; | |
530e8392 KB |
16919 | struct type *type; |
16920 | ||
16921 | type = read_type_die (die, cu); | |
16922 | new_symbol (die, type, cu); | |
5d7cb8df | 16923 | |
5d7cb8df JK |
16924 | while (child_die && child_die->tag) |
16925 | { | |
16926 | process_die (child_die, cu); | |
16927 | child_die = sibling_die (child_die); | |
16928 | } | |
16929 | } | |
16930 | ||
38d518c9 EZ |
16931 | /* Return the name of the namespace represented by DIE. Set |
16932 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
16933 | namespace. */ | |
16934 | ||
16935 | static const char * | |
e142c38c | 16936 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
16937 | { |
16938 | struct die_info *current_die; | |
16939 | const char *name = NULL; | |
16940 | ||
16941 | /* Loop through the extensions until we find a name. */ | |
16942 | ||
16943 | for (current_die = die; | |
16944 | current_die != NULL; | |
f2f0e013 | 16945 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 16946 | { |
96553a0c DE |
16947 | /* We don't use dwarf2_name here so that we can detect the absence |
16948 | of a name -> anonymous namespace. */ | |
7d45c7c3 | 16949 | name = dwarf2_string_attr (die, DW_AT_name, cu); |
96553a0c | 16950 | |
38d518c9 EZ |
16951 | if (name != NULL) |
16952 | break; | |
16953 | } | |
16954 | ||
16955 | /* Is it an anonymous namespace? */ | |
16956 | ||
16957 | *is_anonymous = (name == NULL); | |
16958 | if (*is_anonymous) | |
2b1dbab0 | 16959 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
16960 | |
16961 | return name; | |
d9fa45fe DC |
16962 | } |
16963 | ||
c906108c SS |
16964 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
16965 | the user defined type vector. */ | |
16966 | ||
f792889a | 16967 | static struct type * |
e7c27a73 | 16968 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16969 | { |
518817b3 SM |
16970 | struct gdbarch *gdbarch |
16971 | = get_objfile_arch (cu->per_cu->dwarf2_per_objfile->objfile); | |
e7c27a73 | 16972 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 16973 | struct type *type; |
8b2dbe47 KB |
16974 | struct attribute *attr_byte_size; |
16975 | struct attribute *attr_address_class; | |
16976 | int byte_size, addr_class; | |
7e314c57 JK |
16977 | struct type *target_type; |
16978 | ||
16979 | target_type = die_type (die, cu); | |
c906108c | 16980 | |
7e314c57 JK |
16981 | /* The die_type call above may have already set the type for this DIE. */ |
16982 | type = get_die_type (die, cu); | |
16983 | if (type) | |
16984 | return type; | |
16985 | ||
16986 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 16987 | |
e142c38c | 16988 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
16989 | if (attr_byte_size) |
16990 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 16991 | else |
8b2dbe47 KB |
16992 | byte_size = cu_header->addr_size; |
16993 | ||
e142c38c | 16994 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
16995 | if (attr_address_class) |
16996 | addr_class = DW_UNSND (attr_address_class); | |
16997 | else | |
16998 | addr_class = DW_ADDR_none; | |
16999 | ||
2b4424c3 TT |
17000 | ULONGEST alignment = get_alignment (cu, die); |
17001 | ||
17002 | /* If the pointer size, alignment, or address class is different | |
17003 | than the default, create a type variant marked as such and set | |
17004 | the length accordingly. */ | |
17005 | if (TYPE_LENGTH (type) != byte_size | |
17006 | || (alignment != 0 && TYPE_RAW_ALIGN (type) != 0 | |
17007 | && alignment != TYPE_RAW_ALIGN (type)) | |
17008 | || addr_class != DW_ADDR_none) | |
c906108c | 17009 | { |
5e2b427d | 17010 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
17011 | { |
17012 | int type_flags; | |
17013 | ||
849957d9 | 17014 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 17015 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
17016 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
17017 | == 0); | |
8b2dbe47 KB |
17018 | type = make_type_with_address_space (type, type_flags); |
17019 | } | |
17020 | else if (TYPE_LENGTH (type) != byte_size) | |
17021 | { | |
b98664d3 | 17022 | complaint (_("invalid pointer size %d"), byte_size); |
8b2dbe47 | 17023 | } |
2b4424c3 TT |
17024 | else if (TYPE_RAW_ALIGN (type) != alignment) |
17025 | { | |
b98664d3 | 17026 | complaint (_("Invalid DW_AT_alignment" |
2b4424c3 TT |
17027 | " - DIE at %s [in module %s]"), |
17028 | sect_offset_str (die->sect_off), | |
17029 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
17030 | } | |
6e70227d | 17031 | else |
9a619af0 MS |
17032 | { |
17033 | /* Should we also complain about unhandled address classes? */ | |
17034 | } | |
c906108c | 17035 | } |
8b2dbe47 KB |
17036 | |
17037 | TYPE_LENGTH (type) = byte_size; | |
2b4424c3 | 17038 | set_type_align (type, alignment); |
f792889a | 17039 | return set_die_type (die, type, cu); |
c906108c SS |
17040 | } |
17041 | ||
17042 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
17043 | the user defined type vector. */ | |
17044 | ||
f792889a | 17045 | static struct type * |
e7c27a73 | 17046 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
17047 | { |
17048 | struct type *type; | |
17049 | struct type *to_type; | |
17050 | struct type *domain; | |
17051 | ||
e7c27a73 DJ |
17052 | to_type = die_type (die, cu); |
17053 | domain = die_containing_type (die, cu); | |
0d5de010 | 17054 | |
7e314c57 JK |
17055 | /* The calls above may have already set the type for this DIE. */ |
17056 | type = get_die_type (die, cu); | |
17057 | if (type) | |
17058 | return type; | |
17059 | ||
0d5de010 DJ |
17060 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) |
17061 | type = lookup_methodptr_type (to_type); | |
7078baeb TT |
17062 | else if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_FUNC) |
17063 | { | |
518817b3 SM |
17064 | struct type *new_type |
17065 | = alloc_type (cu->per_cu->dwarf2_per_objfile->objfile); | |
7078baeb TT |
17066 | |
17067 | smash_to_method_type (new_type, domain, TYPE_TARGET_TYPE (to_type), | |
17068 | TYPE_FIELDS (to_type), TYPE_NFIELDS (to_type), | |
17069 | TYPE_VARARGS (to_type)); | |
17070 | type = lookup_methodptr_type (new_type); | |
17071 | } | |
0d5de010 DJ |
17072 | else |
17073 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 17074 | |
f792889a | 17075 | return set_die_type (die, type, cu); |
c906108c SS |
17076 | } |
17077 | ||
4297a3f0 | 17078 | /* Extract all information from a DW_TAG_{rvalue_,}reference_type DIE and add to |
c906108c SS |
17079 | the user defined type vector. */ |
17080 | ||
f792889a | 17081 | static struct type * |
4297a3f0 AV |
17082 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu, |
17083 | enum type_code refcode) | |
c906108c | 17084 | { |
e7c27a73 | 17085 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 17086 | struct type *type, *target_type; |
c906108c SS |
17087 | struct attribute *attr; |
17088 | ||
4297a3f0 AV |
17089 | gdb_assert (refcode == TYPE_CODE_REF || refcode == TYPE_CODE_RVALUE_REF); |
17090 | ||
7e314c57 JK |
17091 | target_type = die_type (die, cu); |
17092 | ||
17093 | /* The die_type call above may have already set the type for this DIE. */ | |
17094 | type = get_die_type (die, cu); | |
17095 | if (type) | |
17096 | return type; | |
17097 | ||
4297a3f0 | 17098 | type = lookup_reference_type (target_type, refcode); |
e142c38c | 17099 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
17100 | if (attr) |
17101 | { | |
17102 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
17103 | } | |
17104 | else | |
17105 | { | |
107d2387 | 17106 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 17107 | } |
2b4424c3 | 17108 | maybe_set_alignment (cu, die, type); |
f792889a | 17109 | return set_die_type (die, type, cu); |
c906108c SS |
17110 | } |
17111 | ||
cf363f18 MW |
17112 | /* Add the given cv-qualifiers to the element type of the array. GCC |
17113 | outputs DWARF type qualifiers that apply to an array, not the | |
17114 | element type. But GDB relies on the array element type to carry | |
17115 | the cv-qualifiers. This mimics section 6.7.3 of the C99 | |
17116 | specification. */ | |
17117 | ||
17118 | static struct type * | |
17119 | add_array_cv_type (struct die_info *die, struct dwarf2_cu *cu, | |
17120 | struct type *base_type, int cnst, int voltl) | |
17121 | { | |
17122 | struct type *el_type, *inner_array; | |
17123 | ||
17124 | base_type = copy_type (base_type); | |
17125 | inner_array = base_type; | |
17126 | ||
17127 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) | |
17128 | { | |
17129 | TYPE_TARGET_TYPE (inner_array) = | |
17130 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
17131 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
17132 | } | |
17133 | ||
17134 | el_type = TYPE_TARGET_TYPE (inner_array); | |
17135 | cnst |= TYPE_CONST (el_type); | |
17136 | voltl |= TYPE_VOLATILE (el_type); | |
17137 | TYPE_TARGET_TYPE (inner_array) = make_cv_type (cnst, voltl, el_type, NULL); | |
17138 | ||
17139 | return set_die_type (die, base_type, cu); | |
17140 | } | |
17141 | ||
f792889a | 17142 | static struct type * |
e7c27a73 | 17143 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17144 | { |
f792889a | 17145 | struct type *base_type, *cv_type; |
c906108c | 17146 | |
e7c27a73 | 17147 | base_type = die_type (die, cu); |
7e314c57 JK |
17148 | |
17149 | /* The die_type call above may have already set the type for this DIE. */ | |
17150 | cv_type = get_die_type (die, cu); | |
17151 | if (cv_type) | |
17152 | return cv_type; | |
17153 | ||
2f608a3a KW |
17154 | /* In case the const qualifier is applied to an array type, the element type |
17155 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
17156 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
cf363f18 | 17157 | return add_array_cv_type (die, cu, base_type, 1, 0); |
2f608a3a | 17158 | |
f792889a DJ |
17159 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
17160 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
17161 | } |
17162 | ||
f792889a | 17163 | static struct type * |
e7c27a73 | 17164 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17165 | { |
f792889a | 17166 | struct type *base_type, *cv_type; |
c906108c | 17167 | |
e7c27a73 | 17168 | base_type = die_type (die, cu); |
7e314c57 JK |
17169 | |
17170 | /* The die_type call above may have already set the type for this DIE. */ | |
17171 | cv_type = get_die_type (die, cu); | |
17172 | if (cv_type) | |
17173 | return cv_type; | |
17174 | ||
cf363f18 MW |
17175 | /* In case the volatile qualifier is applied to an array type, the |
17176 | element type is so qualified, not the array type (section 6.7.3 | |
17177 | of C99). */ | |
17178 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
17179 | return add_array_cv_type (die, cu, base_type, 0, 1); | |
17180 | ||
f792889a DJ |
17181 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
17182 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
17183 | } |
17184 | ||
06d66ee9 TT |
17185 | /* Handle DW_TAG_restrict_type. */ |
17186 | ||
17187 | static struct type * | |
17188 | read_tag_restrict_type (struct die_info *die, struct dwarf2_cu *cu) | |
17189 | { | |
17190 | struct type *base_type, *cv_type; | |
17191 | ||
17192 | base_type = die_type (die, cu); | |
17193 | ||
17194 | /* The die_type call above may have already set the type for this DIE. */ | |
17195 | cv_type = get_die_type (die, cu); | |
17196 | if (cv_type) | |
17197 | return cv_type; | |
17198 | ||
17199 | cv_type = make_restrict_type (base_type); | |
17200 | return set_die_type (die, cv_type, cu); | |
17201 | } | |
17202 | ||
a2c2acaf MW |
17203 | /* Handle DW_TAG_atomic_type. */ |
17204 | ||
17205 | static struct type * | |
17206 | read_tag_atomic_type (struct die_info *die, struct dwarf2_cu *cu) | |
17207 | { | |
17208 | struct type *base_type, *cv_type; | |
17209 | ||
17210 | base_type = die_type (die, cu); | |
17211 | ||
17212 | /* The die_type call above may have already set the type for this DIE. */ | |
17213 | cv_type = get_die_type (die, cu); | |
17214 | if (cv_type) | |
17215 | return cv_type; | |
17216 | ||
17217 | cv_type = make_atomic_type (base_type); | |
17218 | return set_die_type (die, cv_type, cu); | |
17219 | } | |
17220 | ||
c906108c SS |
17221 | /* Extract all information from a DW_TAG_string_type DIE and add to |
17222 | the user defined type vector. It isn't really a user defined type, | |
17223 | but it behaves like one, with other DIE's using an AT_user_def_type | |
17224 | attribute to reference it. */ | |
17225 | ||
f792889a | 17226 | static struct type * |
e7c27a73 | 17227 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17228 | { |
518817b3 | 17229 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3b7538c0 | 17230 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
17231 | struct type *type, *range_type, *index_type, *char_type; |
17232 | struct attribute *attr; | |
17233 | unsigned int length; | |
17234 | ||
e142c38c | 17235 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
17236 | if (attr) |
17237 | { | |
17238 | length = DW_UNSND (attr); | |
17239 | } | |
17240 | else | |
17241 | { | |
0963b4bd | 17242 | /* Check for the DW_AT_byte_size attribute. */ |
e142c38c | 17243 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
17244 | if (attr) |
17245 | { | |
17246 | length = DW_UNSND (attr); | |
17247 | } | |
17248 | else | |
17249 | { | |
17250 | length = 1; | |
17251 | } | |
c906108c | 17252 | } |
6ccb9162 | 17253 | |
46bf5051 | 17254 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 17255 | range_type = create_static_range_type (NULL, index_type, 1, length); |
3b7538c0 UW |
17256 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
17257 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 17258 | |
f792889a | 17259 | return set_die_type (die, type, cu); |
c906108c SS |
17260 | } |
17261 | ||
4d804846 JB |
17262 | /* Assuming that DIE corresponds to a function, returns nonzero |
17263 | if the function is prototyped. */ | |
17264 | ||
17265 | static int | |
17266 | prototyped_function_p (struct die_info *die, struct dwarf2_cu *cu) | |
17267 | { | |
17268 | struct attribute *attr; | |
17269 | ||
17270 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); | |
17271 | if (attr && (DW_UNSND (attr) != 0)) | |
17272 | return 1; | |
17273 | ||
17274 | /* The DWARF standard implies that the DW_AT_prototyped attribute | |
17275 | is only meaninful for C, but the concept also extends to other | |
17276 | languages that allow unprototyped functions (Eg: Objective C). | |
17277 | For all other languages, assume that functions are always | |
17278 | prototyped. */ | |
17279 | if (cu->language != language_c | |
17280 | && cu->language != language_objc | |
17281 | && cu->language != language_opencl) | |
17282 | return 1; | |
17283 | ||
17284 | /* RealView does not emit DW_AT_prototyped. We can not distinguish | |
17285 | prototyped and unprototyped functions; default to prototyped, | |
17286 | since that is more common in modern code (and RealView warns | |
17287 | about unprototyped functions). */ | |
17288 | if (producer_is_realview (cu->producer)) | |
17289 | return 1; | |
17290 | ||
17291 | return 0; | |
17292 | } | |
17293 | ||
c906108c SS |
17294 | /* Handle DIES due to C code like: |
17295 | ||
17296 | struct foo | |
c5aa993b JM |
17297 | { |
17298 | int (*funcp)(int a, long l); | |
17299 | int b; | |
17300 | }; | |
c906108c | 17301 | |
0963b4bd | 17302 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 17303 | |
f792889a | 17304 | static struct type * |
e7c27a73 | 17305 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17306 | { |
518817b3 | 17307 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0963b4bd MS |
17308 | struct type *type; /* Type that this function returns. */ |
17309 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
17310 | struct attribute *attr; |
17311 | ||
e7c27a73 | 17312 | type = die_type (die, cu); |
7e314c57 JK |
17313 | |
17314 | /* The die_type call above may have already set the type for this DIE. */ | |
17315 | ftype = get_die_type (die, cu); | |
17316 | if (ftype) | |
17317 | return ftype; | |
17318 | ||
0c8b41f1 | 17319 | ftype = lookup_function_type (type); |
c906108c | 17320 | |
4d804846 | 17321 | if (prototyped_function_p (die, cu)) |
a6c727b2 | 17322 | TYPE_PROTOTYPED (ftype) = 1; |
c906108c | 17323 | |
c055b101 CV |
17324 | /* Store the calling convention in the type if it's available in |
17325 | the subroutine die. Otherwise set the calling convention to | |
17326 | the default value DW_CC_normal. */ | |
17327 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
54fcddd0 UW |
17328 | if (attr) |
17329 | TYPE_CALLING_CONVENTION (ftype) = DW_UNSND (attr); | |
17330 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) | |
17331 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
17332 | else | |
17333 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 | 17334 | |
743649fd MW |
17335 | /* Record whether the function returns normally to its caller or not |
17336 | if the DWARF producer set that information. */ | |
17337 | attr = dwarf2_attr (die, DW_AT_noreturn, cu); | |
17338 | if (attr && (DW_UNSND (attr) != 0)) | |
17339 | TYPE_NO_RETURN (ftype) = 1; | |
17340 | ||
76c10ea2 GM |
17341 | /* We need to add the subroutine type to the die immediately so |
17342 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 17343 | declared as the same subroutine type. */ |
76c10ea2 | 17344 | set_die_type (die, ftype, cu); |
6e70227d | 17345 | |
639d11d3 | 17346 | if (die->child != NULL) |
c906108c | 17347 | { |
bb5ed363 | 17348 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 17349 | struct die_info *child_die; |
8072405b | 17350 | int nparams, iparams; |
c906108c SS |
17351 | |
17352 | /* Count the number of parameters. | |
17353 | FIXME: GDB currently ignores vararg functions, but knows about | |
17354 | vararg member functions. */ | |
8072405b | 17355 | nparams = 0; |
639d11d3 | 17356 | child_die = die->child; |
c906108c SS |
17357 | while (child_die && child_die->tag) |
17358 | { | |
17359 | if (child_die->tag == DW_TAG_formal_parameter) | |
17360 | nparams++; | |
17361 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 17362 | TYPE_VARARGS (ftype) = 1; |
c906108c SS |
17363 | child_die = sibling_die (child_die); |
17364 | } | |
17365 | ||
17366 | /* Allocate storage for parameters and fill them in. */ | |
17367 | TYPE_NFIELDS (ftype) = nparams; | |
17368 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 17369 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 17370 | |
8072405b JK |
17371 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
17372 | even if we error out during the parameters reading below. */ | |
17373 | for (iparams = 0; iparams < nparams; iparams++) | |
17374 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
17375 | ||
17376 | iparams = 0; | |
639d11d3 | 17377 | child_die = die->child; |
c906108c SS |
17378 | while (child_die && child_die->tag) |
17379 | { | |
17380 | if (child_die->tag == DW_TAG_formal_parameter) | |
17381 | { | |
3ce3b1ba PA |
17382 | struct type *arg_type; |
17383 | ||
17384 | /* DWARF version 2 has no clean way to discern C++ | |
17385 | static and non-static member functions. G++ helps | |
17386 | GDB by marking the first parameter for non-static | |
17387 | member functions (which is the this pointer) as | |
17388 | artificial. We pass this information to | |
17389 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
17390 | ||
17391 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
17392 | 4.5 does not yet generate. */ | |
e142c38c | 17393 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
17394 | if (attr) |
17395 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
17396 | else | |
9c37b5ae | 17397 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
3ce3b1ba PA |
17398 | arg_type = die_type (child_die, cu); |
17399 | ||
17400 | /* RealView does not mark THIS as const, which the testsuite | |
17401 | expects. GCC marks THIS as const in method definitions, | |
17402 | but not in the class specifications (GCC PR 43053). */ | |
17403 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
17404 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
17405 | { | |
17406 | int is_this = 0; | |
17407 | struct dwarf2_cu *arg_cu = cu; | |
17408 | const char *name = dwarf2_name (child_die, cu); | |
17409 | ||
17410 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
17411 | if (attr) | |
17412 | { | |
17413 | /* If the compiler emits this, use it. */ | |
17414 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
17415 | is_this = 1; | |
17416 | } | |
17417 | else if (name && strcmp (name, "this") == 0) | |
17418 | /* Function definitions will have the argument names. */ | |
17419 | is_this = 1; | |
17420 | else if (name == NULL && iparams == 0) | |
17421 | /* Declarations may not have the names, so like | |
17422 | elsewhere in GDB, assume an artificial first | |
17423 | argument is "this". */ | |
17424 | is_this = 1; | |
17425 | ||
17426 | if (is_this) | |
17427 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
17428 | arg_type, 0); | |
17429 | } | |
17430 | ||
17431 | TYPE_FIELD_TYPE (ftype, iparams) = arg_type; | |
c906108c SS |
17432 | iparams++; |
17433 | } | |
17434 | child_die = sibling_die (child_die); | |
17435 | } | |
17436 | } | |
17437 | ||
76c10ea2 | 17438 | return ftype; |
c906108c SS |
17439 | } |
17440 | ||
f792889a | 17441 | static struct type * |
e7c27a73 | 17442 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17443 | { |
518817b3 | 17444 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 17445 | const char *name = NULL; |
3c8e0968 | 17446 | struct type *this_type, *target_type; |
c906108c | 17447 | |
94af9270 | 17448 | name = dwarf2_full_name (NULL, die, cu); |
19f392bc UW |
17449 | this_type = init_type (objfile, TYPE_CODE_TYPEDEF, 0, name); |
17450 | TYPE_TARGET_STUB (this_type) = 1; | |
f792889a | 17451 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
17452 | target_type = die_type (die, cu); |
17453 | if (target_type != this_type) | |
17454 | TYPE_TARGET_TYPE (this_type) = target_type; | |
17455 | else | |
17456 | { | |
17457 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
17458 | spec and cause infinite loops in GDB. */ | |
b98664d3 | 17459 | complaint (_("Self-referential DW_TAG_typedef " |
9d8780f0 SM |
17460 | "- DIE at %s [in module %s]"), |
17461 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
3c8e0968 DE |
17462 | TYPE_TARGET_TYPE (this_type) = NULL; |
17463 | } | |
f792889a | 17464 | return this_type; |
c906108c SS |
17465 | } |
17466 | ||
9b790ce7 UW |
17467 | /* Allocate a floating-point type of size BITS and name NAME. Pass NAME_HINT |
17468 | (which may be different from NAME) to the architecture back-end to allow | |
17469 | it to guess the correct format if necessary. */ | |
17470 | ||
17471 | static struct type * | |
17472 | dwarf2_init_float_type (struct objfile *objfile, int bits, const char *name, | |
17473 | const char *name_hint) | |
17474 | { | |
17475 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
17476 | const struct floatformat **format; | |
17477 | struct type *type; | |
17478 | ||
17479 | format = gdbarch_floatformat_for_type (gdbarch, name_hint, bits); | |
17480 | if (format) | |
17481 | type = init_float_type (objfile, bits, name, format); | |
17482 | else | |
77b7c781 | 17483 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
9b790ce7 UW |
17484 | |
17485 | return type; | |
17486 | } | |
17487 | ||
eb77c9df AB |
17488 | /* Allocate an integer type of size BITS and name NAME. */ |
17489 | ||
17490 | static struct type * | |
17491 | dwarf2_init_integer_type (struct dwarf2_cu *cu, struct objfile *objfile, | |
17492 | int bits, int unsigned_p, const char *name) | |
17493 | { | |
17494 | struct type *type; | |
17495 | ||
17496 | /* Versions of Intel's C Compiler generate an integer type called "void" | |
17497 | instead of using DW_TAG_unspecified_type. This has been seen on | |
17498 | at least versions 14, 17, and 18. */ | |
35ee2dc2 AB |
17499 | if (bits == 0 && producer_is_icc (cu) && name != nullptr |
17500 | && strcmp (name, "void") == 0) | |
eb77c9df AB |
17501 | type = objfile_type (objfile)->builtin_void; |
17502 | else | |
17503 | type = init_integer_type (objfile, bits, unsigned_p, name); | |
17504 | ||
17505 | return type; | |
17506 | } | |
17507 | ||
c906108c SS |
17508 | /* Find a representation of a given base type and install |
17509 | it in the TYPE field of the die. */ | |
17510 | ||
f792889a | 17511 | static struct type * |
e7c27a73 | 17512 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17513 | { |
518817b3 | 17514 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c SS |
17515 | struct type *type; |
17516 | struct attribute *attr; | |
19f392bc | 17517 | int encoding = 0, bits = 0; |
15d034d0 | 17518 | const char *name; |
c906108c | 17519 | |
e142c38c | 17520 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
17521 | if (attr) |
17522 | { | |
17523 | encoding = DW_UNSND (attr); | |
17524 | } | |
e142c38c | 17525 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
17526 | if (attr) |
17527 | { | |
19f392bc | 17528 | bits = DW_UNSND (attr) * TARGET_CHAR_BIT; |
c906108c | 17529 | } |
39cbfefa | 17530 | name = dwarf2_name (die, cu); |
6ccb9162 | 17531 | if (!name) |
c906108c | 17532 | { |
b98664d3 | 17533 | complaint (_("DW_AT_name missing from DW_TAG_base_type")); |
c906108c | 17534 | } |
6ccb9162 UW |
17535 | |
17536 | switch (encoding) | |
c906108c | 17537 | { |
6ccb9162 UW |
17538 | case DW_ATE_address: |
17539 | /* Turn DW_ATE_address into a void * pointer. */ | |
77b7c781 | 17540 | type = init_type (objfile, TYPE_CODE_VOID, TARGET_CHAR_BIT, NULL); |
19f392bc | 17541 | type = init_pointer_type (objfile, bits, name, type); |
6ccb9162 UW |
17542 | break; |
17543 | case DW_ATE_boolean: | |
19f392bc | 17544 | type = init_boolean_type (objfile, bits, 1, name); |
6ccb9162 UW |
17545 | break; |
17546 | case DW_ATE_complex_float: | |
9b790ce7 | 17547 | type = dwarf2_init_float_type (objfile, bits / 2, NULL, name); |
19f392bc | 17548 | type = init_complex_type (objfile, name, type); |
6ccb9162 UW |
17549 | break; |
17550 | case DW_ATE_decimal_float: | |
19f392bc | 17551 | type = init_decfloat_type (objfile, bits, name); |
6ccb9162 UW |
17552 | break; |
17553 | case DW_ATE_float: | |
9b790ce7 | 17554 | type = dwarf2_init_float_type (objfile, bits, name, name); |
6ccb9162 UW |
17555 | break; |
17556 | case DW_ATE_signed: | |
eb77c9df | 17557 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
17558 | break; |
17559 | case DW_ATE_unsigned: | |
3b2b8fea TT |
17560 | if (cu->language == language_fortran |
17561 | && name | |
61012eef | 17562 | && startswith (name, "character(")) |
19f392bc UW |
17563 | type = init_character_type (objfile, bits, 1, name); |
17564 | else | |
eb77c9df | 17565 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 UW |
17566 | break; |
17567 | case DW_ATE_signed_char: | |
6e70227d | 17568 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
17569 | || cu->language == language_pascal |
17570 | || cu->language == language_fortran) | |
19f392bc UW |
17571 | type = init_character_type (objfile, bits, 0, name); |
17572 | else | |
eb77c9df | 17573 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
17574 | break; |
17575 | case DW_ATE_unsigned_char: | |
868a0084 | 17576 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea | 17577 | || cu->language == language_pascal |
c44af4eb TT |
17578 | || cu->language == language_fortran |
17579 | || cu->language == language_rust) | |
19f392bc UW |
17580 | type = init_character_type (objfile, bits, 1, name); |
17581 | else | |
eb77c9df | 17582 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 | 17583 | break; |
75079b2b | 17584 | case DW_ATE_UTF: |
53e710ac PA |
17585 | { |
17586 | gdbarch *arch = get_objfile_arch (objfile); | |
17587 | ||
17588 | if (bits == 16) | |
17589 | type = builtin_type (arch)->builtin_char16; | |
17590 | else if (bits == 32) | |
17591 | type = builtin_type (arch)->builtin_char32; | |
17592 | else | |
17593 | { | |
b98664d3 | 17594 | complaint (_("unsupported DW_ATE_UTF bit size: '%d'"), |
53e710ac | 17595 | bits); |
eb77c9df | 17596 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
53e710ac PA |
17597 | } |
17598 | return set_die_type (die, type, cu); | |
17599 | } | |
75079b2b TT |
17600 | break; |
17601 | ||
6ccb9162 | 17602 | default: |
b98664d3 | 17603 | complaint (_("unsupported DW_AT_encoding: '%s'"), |
6ccb9162 | 17604 | dwarf_type_encoding_name (encoding)); |
77b7c781 | 17605 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
6ccb9162 | 17606 | break; |
c906108c | 17607 | } |
6ccb9162 | 17608 | |
0114d602 | 17609 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 17610 | TYPE_NOSIGN (type) = 1; |
0114d602 | 17611 | |
2b4424c3 TT |
17612 | maybe_set_alignment (cu, die, type); |
17613 | ||
f792889a | 17614 | return set_die_type (die, type, cu); |
c906108c SS |
17615 | } |
17616 | ||
80180f79 SA |
17617 | /* Parse dwarf attribute if it's a block, reference or constant and put the |
17618 | resulting value of the attribute into struct bound_prop. | |
17619 | Returns 1 if ATTR could be resolved into PROP, 0 otherwise. */ | |
17620 | ||
17621 | static int | |
17622 | attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die, | |
17623 | struct dwarf2_cu *cu, struct dynamic_prop *prop) | |
17624 | { | |
17625 | struct dwarf2_property_baton *baton; | |
518817b3 SM |
17626 | struct obstack *obstack |
17627 | = &cu->per_cu->dwarf2_per_objfile->objfile->objfile_obstack; | |
80180f79 SA |
17628 | |
17629 | if (attr == NULL || prop == NULL) | |
17630 | return 0; | |
17631 | ||
17632 | if (attr_form_is_block (attr)) | |
17633 | { | |
8d749320 | 17634 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
80180f79 SA |
17635 | baton->referenced_type = NULL; |
17636 | baton->locexpr.per_cu = cu->per_cu; | |
17637 | baton->locexpr.size = DW_BLOCK (attr)->size; | |
17638 | baton->locexpr.data = DW_BLOCK (attr)->data; | |
17639 | prop->data.baton = baton; | |
17640 | prop->kind = PROP_LOCEXPR; | |
17641 | gdb_assert (prop->data.baton != NULL); | |
17642 | } | |
17643 | else if (attr_form_is_ref (attr)) | |
17644 | { | |
17645 | struct dwarf2_cu *target_cu = cu; | |
17646 | struct die_info *target_die; | |
17647 | struct attribute *target_attr; | |
17648 | ||
17649 | target_die = follow_die_ref (die, attr, &target_cu); | |
17650 | target_attr = dwarf2_attr (target_die, DW_AT_location, target_cu); | |
df25ebbd JB |
17651 | if (target_attr == NULL) |
17652 | target_attr = dwarf2_attr (target_die, DW_AT_data_member_location, | |
17653 | target_cu); | |
80180f79 SA |
17654 | if (target_attr == NULL) |
17655 | return 0; | |
17656 | ||
df25ebbd | 17657 | switch (target_attr->name) |
80180f79 | 17658 | { |
df25ebbd JB |
17659 | case DW_AT_location: |
17660 | if (attr_form_is_section_offset (target_attr)) | |
17661 | { | |
8d749320 | 17662 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
df25ebbd JB |
17663 | baton->referenced_type = die_type (target_die, target_cu); |
17664 | fill_in_loclist_baton (cu, &baton->loclist, target_attr); | |
17665 | prop->data.baton = baton; | |
17666 | prop->kind = PROP_LOCLIST; | |
17667 | gdb_assert (prop->data.baton != NULL); | |
17668 | } | |
17669 | else if (attr_form_is_block (target_attr)) | |
17670 | { | |
8d749320 | 17671 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
df25ebbd JB |
17672 | baton->referenced_type = die_type (target_die, target_cu); |
17673 | baton->locexpr.per_cu = cu->per_cu; | |
17674 | baton->locexpr.size = DW_BLOCK (target_attr)->size; | |
17675 | baton->locexpr.data = DW_BLOCK (target_attr)->data; | |
17676 | prop->data.baton = baton; | |
17677 | prop->kind = PROP_LOCEXPR; | |
17678 | gdb_assert (prop->data.baton != NULL); | |
17679 | } | |
17680 | else | |
17681 | { | |
17682 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
17683 | "dynamic property"); | |
17684 | return 0; | |
17685 | } | |
17686 | break; | |
17687 | case DW_AT_data_member_location: | |
17688 | { | |
17689 | LONGEST offset; | |
17690 | ||
17691 | if (!handle_data_member_location (target_die, target_cu, | |
17692 | &offset)) | |
17693 | return 0; | |
17694 | ||
8d749320 | 17695 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
6ad395a7 JB |
17696 | baton->referenced_type = read_type_die (target_die->parent, |
17697 | target_cu); | |
df25ebbd JB |
17698 | baton->offset_info.offset = offset; |
17699 | baton->offset_info.type = die_type (target_die, target_cu); | |
17700 | prop->data.baton = baton; | |
17701 | prop->kind = PROP_ADDR_OFFSET; | |
17702 | break; | |
17703 | } | |
80180f79 SA |
17704 | } |
17705 | } | |
17706 | else if (attr_form_is_constant (attr)) | |
17707 | { | |
17708 | prop->data.const_val = dwarf2_get_attr_constant_value (attr, 0); | |
17709 | prop->kind = PROP_CONST; | |
17710 | } | |
17711 | else | |
17712 | { | |
17713 | dwarf2_invalid_attrib_class_complaint (dwarf_form_name (attr->form), | |
17714 | dwarf2_name (die, cu)); | |
17715 | return 0; | |
17716 | } | |
17717 | ||
17718 | return 1; | |
17719 | } | |
17720 | ||
a02abb62 JB |
17721 | /* Read the given DW_AT_subrange DIE. */ |
17722 | ||
f792889a | 17723 | static struct type * |
a02abb62 JB |
17724 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
17725 | { | |
4c9ad8c2 | 17726 | struct type *base_type, *orig_base_type; |
a02abb62 JB |
17727 | struct type *range_type; |
17728 | struct attribute *attr; | |
729efb13 | 17729 | struct dynamic_prop low, high; |
4fae6e18 | 17730 | int low_default_is_valid; |
c451ebe5 | 17731 | int high_bound_is_count = 0; |
15d034d0 | 17732 | const char *name; |
d359392f | 17733 | ULONGEST negative_mask; |
e77813c8 | 17734 | |
4c9ad8c2 TT |
17735 | orig_base_type = die_type (die, cu); |
17736 | /* If ORIG_BASE_TYPE is a typedef, it will not be TYPE_UNSIGNED, | |
17737 | whereas the real type might be. So, we use ORIG_BASE_TYPE when | |
17738 | creating the range type, but we use the result of check_typedef | |
17739 | when examining properties of the type. */ | |
17740 | base_type = check_typedef (orig_base_type); | |
a02abb62 | 17741 | |
7e314c57 JK |
17742 | /* The die_type call above may have already set the type for this DIE. */ |
17743 | range_type = get_die_type (die, cu); | |
17744 | if (range_type) | |
17745 | return range_type; | |
17746 | ||
729efb13 SA |
17747 | low.kind = PROP_CONST; |
17748 | high.kind = PROP_CONST; | |
17749 | high.data.const_val = 0; | |
17750 | ||
4fae6e18 JK |
17751 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
17752 | omitting DW_AT_lower_bound. */ | |
17753 | switch (cu->language) | |
6e70227d | 17754 | { |
4fae6e18 JK |
17755 | case language_c: |
17756 | case language_cplus: | |
729efb13 | 17757 | low.data.const_val = 0; |
4fae6e18 JK |
17758 | low_default_is_valid = 1; |
17759 | break; | |
17760 | case language_fortran: | |
729efb13 | 17761 | low.data.const_val = 1; |
4fae6e18 JK |
17762 | low_default_is_valid = 1; |
17763 | break; | |
17764 | case language_d: | |
4fae6e18 | 17765 | case language_objc: |
c44af4eb | 17766 | case language_rust: |
729efb13 | 17767 | low.data.const_val = 0; |
4fae6e18 JK |
17768 | low_default_is_valid = (cu->header.version >= 4); |
17769 | break; | |
17770 | case language_ada: | |
17771 | case language_m2: | |
17772 | case language_pascal: | |
729efb13 | 17773 | low.data.const_val = 1; |
4fae6e18 JK |
17774 | low_default_is_valid = (cu->header.version >= 4); |
17775 | break; | |
17776 | default: | |
729efb13 | 17777 | low.data.const_val = 0; |
4fae6e18 JK |
17778 | low_default_is_valid = 0; |
17779 | break; | |
a02abb62 JB |
17780 | } |
17781 | ||
e142c38c | 17782 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 | 17783 | if (attr) |
11c1ba78 | 17784 | attr_to_dynamic_prop (attr, die, cu, &low); |
4fae6e18 | 17785 | else if (!low_default_is_valid) |
b98664d3 | 17786 | complaint (_("Missing DW_AT_lower_bound " |
9d8780f0 SM |
17787 | "- DIE at %s [in module %s]"), |
17788 | sect_offset_str (die->sect_off), | |
518817b3 | 17789 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
a02abb62 | 17790 | |
506f5c41 TV |
17791 | struct attribute *attr_ub, *attr_count; |
17792 | attr = attr_ub = dwarf2_attr (die, DW_AT_upper_bound, cu); | |
80180f79 | 17793 | if (!attr_to_dynamic_prop (attr, die, cu, &high)) |
e77813c8 | 17794 | { |
506f5c41 | 17795 | attr = attr_count = dwarf2_attr (die, DW_AT_count, cu); |
c451ebe5 | 17796 | if (attr_to_dynamic_prop (attr, die, cu, &high)) |
6b662e19 | 17797 | { |
c451ebe5 SA |
17798 | /* If bounds are constant do the final calculation here. */ |
17799 | if (low.kind == PROP_CONST && high.kind == PROP_CONST) | |
17800 | high.data.const_val = low.data.const_val + high.data.const_val - 1; | |
17801 | else | |
17802 | high_bound_is_count = 1; | |
c2ff108b | 17803 | } |
506f5c41 TV |
17804 | else |
17805 | { | |
17806 | if (attr_ub != NULL) | |
17807 | complaint (_("Unresolved DW_AT_upper_bound " | |
17808 | "- DIE at %s [in module %s]"), | |
17809 | sect_offset_str (die->sect_off), | |
17810 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
17811 | if (attr_count != NULL) | |
17812 | complaint (_("Unresolved DW_AT_count " | |
17813 | "- DIE at %s [in module %s]"), | |
17814 | sect_offset_str (die->sect_off), | |
17815 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
17816 | } | |
17817 | ||
e77813c8 PM |
17818 | } |
17819 | ||
17820 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
17821 | without specifying a base type. | |
17822 | In that case, the base type must be set to the type of | |
17823 | the lower bound, upper bound or count, in that order, if any of these | |
17824 | three attributes references an object that has a type. | |
17825 | If no base type is found, the Dwarf-2 specifications say that | |
17826 | a signed integer type of size equal to the size of an address should | |
17827 | be used. | |
17828 | For the following C code: `extern char gdb_int [];' | |
17829 | GCC produces an empty range DIE. | |
17830 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
0963b4bd | 17831 | high bound or count are not yet handled by this code. */ |
e77813c8 PM |
17832 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) |
17833 | { | |
518817b3 | 17834 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e77813c8 PM |
17835 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
17836 | int addr_size = gdbarch_addr_bit (gdbarch) /8; | |
17837 | struct type *int_type = objfile_type (objfile)->builtin_int; | |
17838 | ||
17839 | /* Test "int", "long int", and "long long int" objfile types, | |
17840 | and select the first one having a size above or equal to the | |
17841 | architecture address size. */ | |
17842 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
17843 | base_type = int_type; | |
17844 | else | |
17845 | { | |
17846 | int_type = objfile_type (objfile)->builtin_long; | |
17847 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
17848 | base_type = int_type; | |
17849 | else | |
17850 | { | |
17851 | int_type = objfile_type (objfile)->builtin_long_long; | |
17852 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
17853 | base_type = int_type; | |
17854 | } | |
17855 | } | |
17856 | } | |
a02abb62 | 17857 | |
dbb9c2b1 JB |
17858 | /* Normally, the DWARF producers are expected to use a signed |
17859 | constant form (Eg. DW_FORM_sdata) to express negative bounds. | |
17860 | But this is unfortunately not always the case, as witnessed | |
17861 | with GCC, for instance, where the ambiguous DW_FORM_dataN form | |
17862 | is used instead. To work around that ambiguity, we treat | |
17863 | the bounds as signed, and thus sign-extend their values, when | |
17864 | the base type is signed. */ | |
6e70227d | 17865 | negative_mask = |
d359392f | 17866 | -((ULONGEST) 1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1)); |
729efb13 SA |
17867 | if (low.kind == PROP_CONST |
17868 | && !TYPE_UNSIGNED (base_type) && (low.data.const_val & negative_mask)) | |
17869 | low.data.const_val |= negative_mask; | |
17870 | if (high.kind == PROP_CONST | |
17871 | && !TYPE_UNSIGNED (base_type) && (high.data.const_val & negative_mask)) | |
17872 | high.data.const_val |= negative_mask; | |
43bbcdc2 | 17873 | |
729efb13 | 17874 | range_type = create_range_type (NULL, orig_base_type, &low, &high); |
a02abb62 | 17875 | |
c451ebe5 SA |
17876 | if (high_bound_is_count) |
17877 | TYPE_RANGE_DATA (range_type)->flag_upper_bound_is_count = 1; | |
17878 | ||
c2ff108b JK |
17879 | /* Ada expects an empty array on no boundary attributes. */ |
17880 | if (attr == NULL && cu->language != language_ada) | |
729efb13 | 17881 | TYPE_HIGH_BOUND_KIND (range_type) = PROP_UNDEFINED; |
c2ff108b | 17882 | |
39cbfefa DJ |
17883 | name = dwarf2_name (die, cu); |
17884 | if (name) | |
17885 | TYPE_NAME (range_type) = name; | |
6e70227d | 17886 | |
e142c38c | 17887 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
17888 | if (attr) |
17889 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
17890 | ||
2b4424c3 TT |
17891 | maybe_set_alignment (cu, die, range_type); |
17892 | ||
7e314c57 JK |
17893 | set_die_type (die, range_type, cu); |
17894 | ||
17895 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
17896 | set_descriptive_type (range_type, die, cu); |
17897 | ||
7e314c57 | 17898 | return range_type; |
a02abb62 | 17899 | } |
6e70227d | 17900 | |
f792889a | 17901 | static struct type * |
81a17f79 JB |
17902 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
17903 | { | |
17904 | struct type *type; | |
81a17f79 | 17905 | |
518817b3 SM |
17906 | type = init_type (cu->per_cu->dwarf2_per_objfile->objfile, TYPE_CODE_VOID,0, |
17907 | NULL); | |
0114d602 | 17908 | TYPE_NAME (type) = dwarf2_name (die, cu); |
81a17f79 | 17909 | |
74a2f8ff JB |
17910 | /* In Ada, an unspecified type is typically used when the description |
17911 | of the type is defered to a different unit. When encountering | |
17912 | such a type, we treat it as a stub, and try to resolve it later on, | |
17913 | when needed. */ | |
17914 | if (cu->language == language_ada) | |
17915 | TYPE_STUB (type) = 1; | |
17916 | ||
f792889a | 17917 | return set_die_type (die, type, cu); |
81a17f79 | 17918 | } |
a02abb62 | 17919 | |
639d11d3 DC |
17920 | /* Read a single die and all its descendents. Set the die's sibling |
17921 | field to NULL; set other fields in the die correctly, and set all | |
17922 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
17923 | location of the info_ptr after reading all of those dies. PARENT | |
17924 | is the parent of the die in question. */ | |
17925 | ||
17926 | static struct die_info * | |
dee91e82 | 17927 | read_die_and_children (const struct die_reader_specs *reader, |
d521ce57 TT |
17928 | const gdb_byte *info_ptr, |
17929 | const gdb_byte **new_info_ptr, | |
dee91e82 | 17930 | struct die_info *parent) |
639d11d3 DC |
17931 | { |
17932 | struct die_info *die; | |
d521ce57 | 17933 | const gdb_byte *cur_ptr; |
639d11d3 DC |
17934 | int has_children; |
17935 | ||
bf6af496 | 17936 | cur_ptr = read_full_die_1 (reader, &die, info_ptr, &has_children, 0); |
1d325ec1 DJ |
17937 | if (die == NULL) |
17938 | { | |
17939 | *new_info_ptr = cur_ptr; | |
17940 | return NULL; | |
17941 | } | |
93311388 | 17942 | store_in_ref_table (die, reader->cu); |
639d11d3 DC |
17943 | |
17944 | if (has_children) | |
bf6af496 | 17945 | die->child = read_die_and_siblings_1 (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
17946 | else |
17947 | { | |
17948 | die->child = NULL; | |
17949 | *new_info_ptr = cur_ptr; | |
17950 | } | |
17951 | ||
17952 | die->sibling = NULL; | |
17953 | die->parent = parent; | |
17954 | return die; | |
17955 | } | |
17956 | ||
17957 | /* Read a die, all of its descendents, and all of its siblings; set | |
17958 | all of the fields of all of the dies correctly. Arguments are as | |
17959 | in read_die_and_children. */ | |
17960 | ||
17961 | static struct die_info * | |
bf6af496 | 17962 | read_die_and_siblings_1 (const struct die_reader_specs *reader, |
d521ce57 TT |
17963 | const gdb_byte *info_ptr, |
17964 | const gdb_byte **new_info_ptr, | |
bf6af496 | 17965 | struct die_info *parent) |
639d11d3 DC |
17966 | { |
17967 | struct die_info *first_die, *last_sibling; | |
d521ce57 | 17968 | const gdb_byte *cur_ptr; |
639d11d3 | 17969 | |
c906108c | 17970 | cur_ptr = info_ptr; |
639d11d3 DC |
17971 | first_die = last_sibling = NULL; |
17972 | ||
17973 | while (1) | |
c906108c | 17974 | { |
639d11d3 | 17975 | struct die_info *die |
dee91e82 | 17976 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 17977 | |
1d325ec1 | 17978 | if (die == NULL) |
c906108c | 17979 | { |
639d11d3 DC |
17980 | *new_info_ptr = cur_ptr; |
17981 | return first_die; | |
c906108c | 17982 | } |
1d325ec1 DJ |
17983 | |
17984 | if (!first_die) | |
17985 | first_die = die; | |
c906108c | 17986 | else |
1d325ec1 DJ |
17987 | last_sibling->sibling = die; |
17988 | ||
17989 | last_sibling = die; | |
c906108c | 17990 | } |
c906108c SS |
17991 | } |
17992 | ||
bf6af496 DE |
17993 | /* Read a die, all of its descendents, and all of its siblings; set |
17994 | all of the fields of all of the dies correctly. Arguments are as | |
17995 | in read_die_and_children. | |
17996 | This the main entry point for reading a DIE and all its children. */ | |
17997 | ||
17998 | static struct die_info * | |
17999 | read_die_and_siblings (const struct die_reader_specs *reader, | |
d521ce57 TT |
18000 | const gdb_byte *info_ptr, |
18001 | const gdb_byte **new_info_ptr, | |
bf6af496 DE |
18002 | struct die_info *parent) |
18003 | { | |
18004 | struct die_info *die = read_die_and_siblings_1 (reader, info_ptr, | |
18005 | new_info_ptr, parent); | |
18006 | ||
b4f54984 | 18007 | if (dwarf_die_debug) |
bf6af496 DE |
18008 | { |
18009 | fprintf_unfiltered (gdb_stdlog, | |
18010 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 18011 | get_section_name (reader->die_section), |
bf6af496 DE |
18012 | (unsigned) (info_ptr - reader->die_section->buffer), |
18013 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 18014 | dump_die (die, dwarf_die_debug); |
bf6af496 DE |
18015 | } |
18016 | ||
18017 | return die; | |
18018 | } | |
18019 | ||
3019eac3 DE |
18020 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
18021 | attributes. | |
18022 | The caller is responsible for filling in the extra attributes | |
18023 | and updating (*DIEP)->num_attrs. | |
18024 | Set DIEP to point to a newly allocated die with its information, | |
18025 | except for its child, sibling, and parent fields. | |
18026 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
93311388 | 18027 | |
d521ce57 | 18028 | static const gdb_byte * |
3019eac3 | 18029 | read_full_die_1 (const struct die_reader_specs *reader, |
d521ce57 | 18030 | struct die_info **diep, const gdb_byte *info_ptr, |
3019eac3 | 18031 | int *has_children, int num_extra_attrs) |
93311388 | 18032 | { |
b64f50a1 | 18033 | unsigned int abbrev_number, bytes_read, i; |
93311388 DE |
18034 | struct abbrev_info *abbrev; |
18035 | struct die_info *die; | |
18036 | struct dwarf2_cu *cu = reader->cu; | |
18037 | bfd *abfd = reader->abfd; | |
18038 | ||
9c541725 | 18039 | sect_offset sect_off = (sect_offset) (info_ptr - reader->buffer); |
93311388 DE |
18040 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
18041 | info_ptr += bytes_read; | |
18042 | if (!abbrev_number) | |
18043 | { | |
18044 | *diep = NULL; | |
18045 | *has_children = 0; | |
18046 | return info_ptr; | |
18047 | } | |
18048 | ||
685af9cd | 18049 | abbrev = reader->abbrev_table->lookup_abbrev (abbrev_number); |
93311388 | 18050 | if (!abbrev) |
348e048f DE |
18051 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
18052 | abbrev_number, | |
18053 | bfd_get_filename (abfd)); | |
18054 | ||
3019eac3 | 18055 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
9c541725 | 18056 | die->sect_off = sect_off; |
93311388 DE |
18057 | die->tag = abbrev->tag; |
18058 | die->abbrev = abbrev_number; | |
18059 | ||
3019eac3 DE |
18060 | /* Make the result usable. |
18061 | The caller needs to update num_attrs after adding the extra | |
18062 | attributes. */ | |
93311388 DE |
18063 | die->num_attrs = abbrev->num_attrs; |
18064 | ||
18065 | for (i = 0; i < abbrev->num_attrs; ++i) | |
dee91e82 DE |
18066 | info_ptr = read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], |
18067 | info_ptr); | |
93311388 DE |
18068 | |
18069 | *diep = die; | |
18070 | *has_children = abbrev->has_children; | |
18071 | return info_ptr; | |
18072 | } | |
18073 | ||
3019eac3 DE |
18074 | /* Read a die and all its attributes. |
18075 | Set DIEP to point to a newly allocated die with its information, | |
18076 | except for its child, sibling, and parent fields. | |
18077 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
18078 | ||
d521ce57 | 18079 | static const gdb_byte * |
3019eac3 | 18080 | read_full_die (const struct die_reader_specs *reader, |
d521ce57 | 18081 | struct die_info **diep, const gdb_byte *info_ptr, |
3019eac3 DE |
18082 | int *has_children) |
18083 | { | |
d521ce57 | 18084 | const gdb_byte *result; |
bf6af496 DE |
18085 | |
18086 | result = read_full_die_1 (reader, diep, info_ptr, has_children, 0); | |
18087 | ||
b4f54984 | 18088 | if (dwarf_die_debug) |
bf6af496 DE |
18089 | { |
18090 | fprintf_unfiltered (gdb_stdlog, | |
18091 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 18092 | get_section_name (reader->die_section), |
bf6af496 DE |
18093 | (unsigned) (info_ptr - reader->die_section->buffer), |
18094 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 18095 | dump_die (*diep, dwarf_die_debug); |
bf6af496 DE |
18096 | } |
18097 | ||
18098 | return result; | |
3019eac3 | 18099 | } |
433df2d4 DE |
18100 | \f |
18101 | /* Abbreviation tables. | |
3019eac3 | 18102 | |
433df2d4 | 18103 | In DWARF version 2, the description of the debugging information is |
c906108c SS |
18104 | stored in a separate .debug_abbrev section. Before we read any |
18105 | dies from a section we read in all abbreviations and install them | |
433df2d4 DE |
18106 | in a hash table. */ |
18107 | ||
18108 | /* Allocate space for a struct abbrev_info object in ABBREV_TABLE. */ | |
18109 | ||
685af9cd TT |
18110 | struct abbrev_info * |
18111 | abbrev_table::alloc_abbrev () | |
433df2d4 DE |
18112 | { |
18113 | struct abbrev_info *abbrev; | |
18114 | ||
685af9cd | 18115 | abbrev = XOBNEW (&abbrev_obstack, struct abbrev_info); |
433df2d4 | 18116 | memset (abbrev, 0, sizeof (struct abbrev_info)); |
8d749320 | 18117 | |
433df2d4 DE |
18118 | return abbrev; |
18119 | } | |
18120 | ||
18121 | /* Add an abbreviation to the table. */ | |
c906108c | 18122 | |
685af9cd TT |
18123 | void |
18124 | abbrev_table::add_abbrev (unsigned int abbrev_number, | |
18125 | struct abbrev_info *abbrev) | |
433df2d4 DE |
18126 | { |
18127 | unsigned int hash_number; | |
18128 | ||
18129 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
4a17f768 YQ |
18130 | abbrev->next = m_abbrevs[hash_number]; |
18131 | m_abbrevs[hash_number] = abbrev; | |
433df2d4 | 18132 | } |
dee91e82 | 18133 | |
433df2d4 DE |
18134 | /* Look up an abbrev in the table. |
18135 | Returns NULL if the abbrev is not found. */ | |
18136 | ||
685af9cd TT |
18137 | struct abbrev_info * |
18138 | abbrev_table::lookup_abbrev (unsigned int abbrev_number) | |
c906108c | 18139 | { |
433df2d4 DE |
18140 | unsigned int hash_number; |
18141 | struct abbrev_info *abbrev; | |
18142 | ||
18143 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
4a17f768 | 18144 | abbrev = m_abbrevs[hash_number]; |
433df2d4 DE |
18145 | |
18146 | while (abbrev) | |
18147 | { | |
18148 | if (abbrev->number == abbrev_number) | |
18149 | return abbrev; | |
18150 | abbrev = abbrev->next; | |
18151 | } | |
18152 | return NULL; | |
18153 | } | |
18154 | ||
18155 | /* Read in an abbrev table. */ | |
18156 | ||
685af9cd | 18157 | static abbrev_table_up |
ed2dc618 SM |
18158 | abbrev_table_read_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
18159 | struct dwarf2_section_info *section, | |
9c541725 | 18160 | sect_offset sect_off) |
433df2d4 DE |
18161 | { |
18162 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
a32a8923 | 18163 | bfd *abfd = get_section_bfd_owner (section); |
d521ce57 | 18164 | const gdb_byte *abbrev_ptr; |
c906108c SS |
18165 | struct abbrev_info *cur_abbrev; |
18166 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
433df2d4 | 18167 | unsigned int abbrev_form; |
f3dd6933 DJ |
18168 | struct attr_abbrev *cur_attrs; |
18169 | unsigned int allocated_attrs; | |
c906108c | 18170 | |
685af9cd | 18171 | abbrev_table_up abbrev_table (new struct abbrev_table (sect_off)); |
c906108c | 18172 | |
433df2d4 | 18173 | dwarf2_read_section (objfile, section); |
9c541725 | 18174 | abbrev_ptr = section->buffer + to_underlying (sect_off); |
c906108c SS |
18175 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
18176 | abbrev_ptr += bytes_read; | |
18177 | ||
f3dd6933 | 18178 | allocated_attrs = ATTR_ALLOC_CHUNK; |
8d749320 | 18179 | cur_attrs = XNEWVEC (struct attr_abbrev, allocated_attrs); |
6e70227d | 18180 | |
0963b4bd | 18181 | /* Loop until we reach an abbrev number of 0. */ |
c906108c SS |
18182 | while (abbrev_number) |
18183 | { | |
685af9cd | 18184 | cur_abbrev = abbrev_table->alloc_abbrev (); |
c906108c SS |
18185 | |
18186 | /* read in abbrev header */ | |
18187 | cur_abbrev->number = abbrev_number; | |
aead7601 SM |
18188 | cur_abbrev->tag |
18189 | = (enum dwarf_tag) read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
c906108c SS |
18190 | abbrev_ptr += bytes_read; |
18191 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
18192 | abbrev_ptr += 1; | |
18193 | ||
18194 | /* now read in declarations */ | |
22d2f3ab | 18195 | for (;;) |
c906108c | 18196 | { |
43988095 JK |
18197 | LONGEST implicit_const; |
18198 | ||
22d2f3ab JK |
18199 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
18200 | abbrev_ptr += bytes_read; | |
18201 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
18202 | abbrev_ptr += bytes_read; | |
43988095 JK |
18203 | if (abbrev_form == DW_FORM_implicit_const) |
18204 | { | |
18205 | implicit_const = read_signed_leb128 (abfd, abbrev_ptr, | |
18206 | &bytes_read); | |
18207 | abbrev_ptr += bytes_read; | |
18208 | } | |
18209 | else | |
18210 | { | |
18211 | /* Initialize it due to a false compiler warning. */ | |
18212 | implicit_const = -1; | |
18213 | } | |
22d2f3ab JK |
18214 | |
18215 | if (abbrev_name == 0) | |
18216 | break; | |
18217 | ||
f3dd6933 | 18218 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 18219 | { |
f3dd6933 DJ |
18220 | allocated_attrs += ATTR_ALLOC_CHUNK; |
18221 | cur_attrs | |
224c3ddb | 18222 | = XRESIZEVEC (struct attr_abbrev, cur_attrs, allocated_attrs); |
c906108c | 18223 | } |
ae038cb0 | 18224 | |
aead7601 SM |
18225 | cur_attrs[cur_abbrev->num_attrs].name |
18226 | = (enum dwarf_attribute) abbrev_name; | |
22d2f3ab | 18227 | cur_attrs[cur_abbrev->num_attrs].form |
aead7601 | 18228 | = (enum dwarf_form) abbrev_form; |
43988095 | 18229 | cur_attrs[cur_abbrev->num_attrs].implicit_const = implicit_const; |
22d2f3ab | 18230 | ++cur_abbrev->num_attrs; |
c906108c SS |
18231 | } |
18232 | ||
8d749320 SM |
18233 | cur_abbrev->attrs = |
18234 | XOBNEWVEC (&abbrev_table->abbrev_obstack, struct attr_abbrev, | |
18235 | cur_abbrev->num_attrs); | |
f3dd6933 DJ |
18236 | memcpy (cur_abbrev->attrs, cur_attrs, |
18237 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
18238 | ||
685af9cd | 18239 | abbrev_table->add_abbrev (abbrev_number, cur_abbrev); |
c906108c SS |
18240 | |
18241 | /* Get next abbreviation. | |
18242 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
18243 | always properly terminated with an abbrev number of 0. |
18244 | Exit loop if we encounter an abbreviation which we have | |
18245 | already read (which means we are about to read the abbreviations | |
18246 | for the next compile unit) or if the end of the abbreviation | |
18247 | table is reached. */ | |
433df2d4 | 18248 | if ((unsigned int) (abbrev_ptr - section->buffer) >= section->size) |
c906108c SS |
18249 | break; |
18250 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
18251 | abbrev_ptr += bytes_read; | |
685af9cd | 18252 | if (abbrev_table->lookup_abbrev (abbrev_number) != NULL) |
c906108c SS |
18253 | break; |
18254 | } | |
f3dd6933 DJ |
18255 | |
18256 | xfree (cur_attrs); | |
433df2d4 | 18257 | return abbrev_table; |
c906108c SS |
18258 | } |
18259 | ||
72bf9492 DJ |
18260 | /* Returns nonzero if TAG represents a type that we might generate a partial |
18261 | symbol for. */ | |
18262 | ||
18263 | static int | |
18264 | is_type_tag_for_partial (int tag) | |
18265 | { | |
18266 | switch (tag) | |
18267 | { | |
18268 | #if 0 | |
18269 | /* Some types that would be reasonable to generate partial symbols for, | |
18270 | that we don't at present. */ | |
18271 | case DW_TAG_array_type: | |
18272 | case DW_TAG_file_type: | |
18273 | case DW_TAG_ptr_to_member_type: | |
18274 | case DW_TAG_set_type: | |
18275 | case DW_TAG_string_type: | |
18276 | case DW_TAG_subroutine_type: | |
18277 | #endif | |
18278 | case DW_TAG_base_type: | |
18279 | case DW_TAG_class_type: | |
680b30c7 | 18280 | case DW_TAG_interface_type: |
72bf9492 DJ |
18281 | case DW_TAG_enumeration_type: |
18282 | case DW_TAG_structure_type: | |
18283 | case DW_TAG_subrange_type: | |
18284 | case DW_TAG_typedef: | |
18285 | case DW_TAG_union_type: | |
18286 | return 1; | |
18287 | default: | |
18288 | return 0; | |
18289 | } | |
18290 | } | |
18291 | ||
18292 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
18293 | ||
18294 | static struct partial_die_info * | |
dee91e82 | 18295 | load_partial_dies (const struct die_reader_specs *reader, |
d521ce57 | 18296 | const gdb_byte *info_ptr, int building_psymtab) |
72bf9492 | 18297 | { |
dee91e82 | 18298 | struct dwarf2_cu *cu = reader->cu; |
518817b3 | 18299 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
72bf9492 | 18300 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; |
72bf9492 | 18301 | unsigned int bytes_read; |
5afb4e99 | 18302 | unsigned int load_all = 0; |
72bf9492 DJ |
18303 | int nesting_level = 1; |
18304 | ||
18305 | parent_die = NULL; | |
18306 | last_die = NULL; | |
18307 | ||
7adf1e79 DE |
18308 | gdb_assert (cu->per_cu != NULL); |
18309 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
18310 | load_all = 1; |
18311 | ||
72bf9492 DJ |
18312 | cu->partial_dies |
18313 | = htab_create_alloc_ex (cu->header.length / 12, | |
18314 | partial_die_hash, | |
18315 | partial_die_eq, | |
18316 | NULL, | |
18317 | &cu->comp_unit_obstack, | |
18318 | hashtab_obstack_allocate, | |
18319 | dummy_obstack_deallocate); | |
18320 | ||
72bf9492 DJ |
18321 | while (1) |
18322 | { | |
685af9cd | 18323 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); |
72bf9492 DJ |
18324 | |
18325 | /* A NULL abbrev means the end of a series of children. */ | |
18326 | if (abbrev == NULL) | |
18327 | { | |
18328 | if (--nesting_level == 0) | |
cd9983dd YQ |
18329 | return first_die; |
18330 | ||
72bf9492 DJ |
18331 | info_ptr += bytes_read; |
18332 | last_die = parent_die; | |
18333 | parent_die = parent_die->die_parent; | |
18334 | continue; | |
18335 | } | |
18336 | ||
98bfdba5 PA |
18337 | /* Check for template arguments. We never save these; if |
18338 | they're seen, we just mark the parent, and go on our way. */ | |
18339 | if (parent_die != NULL | |
18340 | && cu->language == language_cplus | |
18341 | && (abbrev->tag == DW_TAG_template_type_param | |
18342 | || abbrev->tag == DW_TAG_template_value_param)) | |
18343 | { | |
18344 | parent_die->has_template_arguments = 1; | |
18345 | ||
18346 | if (!load_all) | |
18347 | { | |
18348 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 18349 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
18350 | continue; |
18351 | } | |
18352 | } | |
18353 | ||
0d99eb77 | 18354 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
18355 | Skip their other children. */ |
18356 | if (!load_all | |
18357 | && cu->language == language_cplus | |
18358 | && parent_die != NULL | |
18359 | && parent_die->tag == DW_TAG_subprogram) | |
18360 | { | |
dee91e82 | 18361 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
18362 | continue; |
18363 | } | |
18364 | ||
5afb4e99 DJ |
18365 | /* Check whether this DIE is interesting enough to save. Normally |
18366 | we would not be interested in members here, but there may be | |
18367 | later variables referencing them via DW_AT_specification (for | |
18368 | static members). */ | |
18369 | if (!load_all | |
18370 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 18371 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
18372 | && abbrev->tag != DW_TAG_enumerator |
18373 | && abbrev->tag != DW_TAG_subprogram | |
b1dc1806 | 18374 | && abbrev->tag != DW_TAG_inlined_subroutine |
bc30ff58 | 18375 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 18376 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 18377 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 18378 | && abbrev->tag != DW_TAG_module |
95554aad | 18379 | && abbrev->tag != DW_TAG_member |
74921315 KS |
18380 | && abbrev->tag != DW_TAG_imported_unit |
18381 | && abbrev->tag != DW_TAG_imported_declaration) | |
72bf9492 DJ |
18382 | { |
18383 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 18384 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
18385 | continue; |
18386 | } | |
18387 | ||
6f06d47b YQ |
18388 | struct partial_die_info pdi ((sect_offset) (info_ptr - reader->buffer), |
18389 | abbrev); | |
cd9983dd | 18390 | |
48fbe735 | 18391 | info_ptr = pdi.read (reader, *abbrev, info_ptr + bytes_read); |
72bf9492 DJ |
18392 | |
18393 | /* This two-pass algorithm for processing partial symbols has a | |
18394 | high cost in cache pressure. Thus, handle some simple cases | |
18395 | here which cover the majority of C partial symbols. DIEs | |
18396 | which neither have specification tags in them, nor could have | |
18397 | specification tags elsewhere pointing at them, can simply be | |
18398 | processed and discarded. | |
18399 | ||
18400 | This segment is also optional; scan_partial_symbols and | |
18401 | add_partial_symbol will handle these DIEs if we chain | |
18402 | them in normally. When compilers which do not emit large | |
18403 | quantities of duplicate debug information are more common, | |
18404 | this code can probably be removed. */ | |
18405 | ||
18406 | /* Any complete simple types at the top level (pretty much all | |
18407 | of them, for a language without namespaces), can be processed | |
18408 | directly. */ | |
18409 | if (parent_die == NULL | |
cd9983dd YQ |
18410 | && pdi.has_specification == 0 |
18411 | && pdi.is_declaration == 0 | |
18412 | && ((pdi.tag == DW_TAG_typedef && !pdi.has_children) | |
18413 | || pdi.tag == DW_TAG_base_type | |
18414 | || pdi.tag == DW_TAG_subrange_type)) | |
72bf9492 | 18415 | { |
cd9983dd YQ |
18416 | if (building_psymtab && pdi.name != NULL) |
18417 | add_psymbol_to_list (pdi.name, strlen (pdi.name), 0, | |
79748972 | 18418 | VAR_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 18419 | psymbol_placement::STATIC, |
1762568f | 18420 | 0, cu->language, objfile); |
cd9983dd | 18421 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
18422 | continue; |
18423 | } | |
18424 | ||
d8228535 JK |
18425 | /* The exception for DW_TAG_typedef with has_children above is |
18426 | a workaround of GCC PR debug/47510. In the case of this complaint | |
a737d952 | 18427 | type_name_or_error will error on such types later. |
d8228535 JK |
18428 | |
18429 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
18430 | it could not find the child DIEs referenced later, this is checked | |
18431 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
18432 | ||
cd9983dd | 18433 | if (pdi.tag == DW_TAG_typedef && pdi.has_children) |
b98664d3 | 18434 | complaint (_("DW_TAG_typedef has childen - GCC PR debug/47510 bug " |
9d8780f0 | 18435 | "- DIE at %s [in module %s]"), |
cd9983dd | 18436 | sect_offset_str (pdi.sect_off), objfile_name (objfile)); |
d8228535 | 18437 | |
72bf9492 DJ |
18438 | /* If we're at the second level, and we're an enumerator, and |
18439 | our parent has no specification (meaning possibly lives in a | |
18440 | namespace elsewhere), then we can add the partial symbol now | |
18441 | instead of queueing it. */ | |
cd9983dd | 18442 | if (pdi.tag == DW_TAG_enumerator |
72bf9492 DJ |
18443 | && parent_die != NULL |
18444 | && parent_die->die_parent == NULL | |
18445 | && parent_die->tag == DW_TAG_enumeration_type | |
18446 | && parent_die->has_specification == 0) | |
18447 | { | |
cd9983dd | 18448 | if (pdi.name == NULL) |
b98664d3 | 18449 | complaint (_("malformed enumerator DIE ignored")); |
72bf9492 | 18450 | else if (building_psymtab) |
cd9983dd | 18451 | add_psymbol_to_list (pdi.name, strlen (pdi.name), 0, |
79748972 | 18452 | VAR_DOMAIN, LOC_CONST, -1, |
9c37b5ae | 18453 | cu->language == language_cplus |
75aedd27 TT |
18454 | ? psymbol_placement::GLOBAL |
18455 | : psymbol_placement::STATIC, | |
1762568f | 18456 | 0, cu->language, objfile); |
72bf9492 | 18457 | |
cd9983dd | 18458 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
18459 | continue; |
18460 | } | |
18461 | ||
cd9983dd | 18462 | struct partial_die_info *part_die |
6f06d47b | 18463 | = new (&cu->comp_unit_obstack) partial_die_info (pdi); |
cd9983dd | 18464 | |
72bf9492 DJ |
18465 | /* We'll save this DIE so link it in. */ |
18466 | part_die->die_parent = parent_die; | |
18467 | part_die->die_sibling = NULL; | |
18468 | part_die->die_child = NULL; | |
18469 | ||
18470 | if (last_die && last_die == parent_die) | |
18471 | last_die->die_child = part_die; | |
18472 | else if (last_die) | |
18473 | last_die->die_sibling = part_die; | |
18474 | ||
18475 | last_die = part_die; | |
18476 | ||
18477 | if (first_die == NULL) | |
18478 | first_die = part_die; | |
18479 | ||
18480 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
18481 | find interesting need to be in the hash table, because we | |
18482 | also have the parent/sibling/child chains; only those that we | |
18483 | might refer to by offset later during partial symbol reading. | |
18484 | ||
18485 | For now this means things that might have be the target of a | |
18486 | DW_AT_specification, DW_AT_abstract_origin, or | |
18487 | DW_AT_extension. DW_AT_extension will refer only to | |
18488 | namespaces; DW_AT_abstract_origin refers to functions (and | |
18489 | many things under the function DIE, but we do not recurse | |
18490 | into function DIEs during partial symbol reading) and | |
18491 | possibly variables as well; DW_AT_specification refers to | |
18492 | declarations. Declarations ought to have the DW_AT_declaration | |
18493 | flag. It happens that GCC forgets to put it in sometimes, but | |
18494 | only for functions, not for types. | |
18495 | ||
18496 | Adding more things than necessary to the hash table is harmless | |
18497 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
18498 | wasted time in find_partial_die, when we reread the compilation |
18499 | unit with load_all_dies set. */ | |
72bf9492 | 18500 | |
5afb4e99 | 18501 | if (load_all |
72929c62 | 18502 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 18503 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
18504 | || abbrev->tag == DW_TAG_variable |
18505 | || abbrev->tag == DW_TAG_namespace | |
18506 | || part_die->is_declaration) | |
18507 | { | |
18508 | void **slot; | |
18509 | ||
18510 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
9c541725 PA |
18511 | to_underlying (part_die->sect_off), |
18512 | INSERT); | |
72bf9492 DJ |
18513 | *slot = part_die; |
18514 | } | |
18515 | ||
72bf9492 | 18516 | /* For some DIEs we want to follow their children (if any). For C |
bc30ff58 | 18517 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
18518 | languages we have to, so that we can get at method physnames |
18519 | to infer fully qualified class names, for DW_AT_specification, | |
18520 | and for C++ template arguments. For C++, we also look one level | |
18521 | inside functions to find template arguments (if the name of the | |
18522 | function does not already contain the template arguments). | |
bc30ff58 JB |
18523 | |
18524 | For Ada, we need to scan the children of subprograms and lexical | |
18525 | blocks as well because Ada allows the definition of nested | |
18526 | entities that could be interesting for the debugger, such as | |
18527 | nested subprograms for instance. */ | |
72bf9492 | 18528 | if (last_die->has_children |
5afb4e99 DJ |
18529 | && (load_all |
18530 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 18531 | || last_die->tag == DW_TAG_module |
72bf9492 | 18532 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
18533 | || (cu->language == language_cplus |
18534 | && last_die->tag == DW_TAG_subprogram | |
18535 | && (last_die->name == NULL | |
18536 | || strchr (last_die->name, '<') == NULL)) | |
72bf9492 DJ |
18537 | || (cu->language != language_c |
18538 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 18539 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 18540 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 JB |
18541 | || last_die->tag == DW_TAG_union_type)) |
18542 | || (cu->language == language_ada | |
18543 | && (last_die->tag == DW_TAG_subprogram | |
18544 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
18545 | { |
18546 | nesting_level++; | |
18547 | parent_die = last_die; | |
18548 | continue; | |
18549 | } | |
18550 | ||
18551 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 18552 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
18553 | |
18554 | /* Back to the top, do it again. */ | |
18555 | } | |
18556 | } | |
18557 | ||
6f06d47b YQ |
18558 | partial_die_info::partial_die_info (sect_offset sect_off_, |
18559 | struct abbrev_info *abbrev) | |
18560 | : partial_die_info (sect_off_, abbrev->tag, abbrev->has_children) | |
18561 | { | |
18562 | } | |
18563 | ||
35cc7ed7 YQ |
18564 | /* Read a minimal amount of information into the minimal die structure. |
18565 | INFO_PTR should point just after the initial uleb128 of a DIE. */ | |
c906108c | 18566 | |
48fbe735 YQ |
18567 | const gdb_byte * |
18568 | partial_die_info::read (const struct die_reader_specs *reader, | |
18569 | const struct abbrev_info &abbrev, const gdb_byte *info_ptr) | |
c906108c | 18570 | { |
dee91e82 | 18571 | struct dwarf2_cu *cu = reader->cu; |
518817b3 SM |
18572 | struct dwarf2_per_objfile *dwarf2_per_objfile |
18573 | = cu->per_cu->dwarf2_per_objfile; | |
fa238c03 | 18574 | unsigned int i; |
c5aa993b | 18575 | int has_low_pc_attr = 0; |
c906108c | 18576 | int has_high_pc_attr = 0; |
91da1414 | 18577 | int high_pc_relative = 0; |
c906108c | 18578 | |
fd0a254f | 18579 | for (i = 0; i < abbrev.num_attrs; ++i) |
c906108c | 18580 | { |
48fbe735 YQ |
18581 | struct attribute attr; |
18582 | ||
fd0a254f | 18583 | info_ptr = read_attribute (reader, &attr, &abbrev.attrs[i], info_ptr); |
c906108c SS |
18584 | |
18585 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 18586 | partial symbol table. */ |
c906108c SS |
18587 | switch (attr.name) |
18588 | { | |
18589 | case DW_AT_name: | |
48fbe735 | 18590 | switch (tag) |
71c25dea TT |
18591 | { |
18592 | case DW_TAG_compile_unit: | |
95554aad | 18593 | case DW_TAG_partial_unit: |
348e048f | 18594 | case DW_TAG_type_unit: |
71c25dea TT |
18595 | /* Compilation units have a DW_AT_name that is a filename, not |
18596 | a source language identifier. */ | |
18597 | case DW_TAG_enumeration_type: | |
18598 | case DW_TAG_enumerator: | |
18599 | /* These tags always have simple identifiers already; no need | |
18600 | to canonicalize them. */ | |
48fbe735 | 18601 | name = DW_STRING (&attr); |
71c25dea TT |
18602 | break; |
18603 | default: | |
48fbe735 YQ |
18604 | { |
18605 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
18606 | ||
18607 | name | |
18608 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, | |
18609 | &objfile->per_bfd->storage_obstack); | |
18610 | } | |
71c25dea TT |
18611 | break; |
18612 | } | |
c906108c | 18613 | break; |
31ef98ae | 18614 | case DW_AT_linkage_name: |
c906108c | 18615 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
18616 | /* Note that both forms of linkage name might appear. We |
18617 | assume they will be the same, and we only store the last | |
18618 | one we see. */ | |
94af9270 | 18619 | if (cu->language == language_ada) |
48fbe735 YQ |
18620 | name = DW_STRING (&attr); |
18621 | linkage_name = DW_STRING (&attr); | |
c906108c SS |
18622 | break; |
18623 | case DW_AT_low_pc: | |
18624 | has_low_pc_attr = 1; | |
48fbe735 | 18625 | lowpc = attr_value_as_address (&attr); |
c906108c SS |
18626 | break; |
18627 | case DW_AT_high_pc: | |
18628 | has_high_pc_attr = 1; | |
48fbe735 | 18629 | highpc = attr_value_as_address (&attr); |
31aa7e4e JB |
18630 | if (cu->header.version >= 4 && attr_form_is_constant (&attr)) |
18631 | high_pc_relative = 1; | |
c906108c SS |
18632 | break; |
18633 | case DW_AT_location: | |
0963b4bd | 18634 | /* Support the .debug_loc offsets. */ |
8e19ed76 PS |
18635 | if (attr_form_is_block (&attr)) |
18636 | { | |
48fbe735 | 18637 | d.locdesc = DW_BLOCK (&attr); |
8e19ed76 | 18638 | } |
3690dd37 | 18639 | else if (attr_form_is_section_offset (&attr)) |
8e19ed76 | 18640 | { |
4d3c2250 | 18641 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
18642 | } |
18643 | else | |
18644 | { | |
4d3c2250 KB |
18645 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
18646 | "partial symbol information"); | |
8e19ed76 | 18647 | } |
c906108c | 18648 | break; |
c906108c | 18649 | case DW_AT_external: |
48fbe735 | 18650 | is_external = DW_UNSND (&attr); |
c906108c SS |
18651 | break; |
18652 | case DW_AT_declaration: | |
48fbe735 | 18653 | is_declaration = DW_UNSND (&attr); |
c906108c SS |
18654 | break; |
18655 | case DW_AT_type: | |
48fbe735 | 18656 | has_type = 1; |
c906108c SS |
18657 | break; |
18658 | case DW_AT_abstract_origin: | |
18659 | case DW_AT_specification: | |
72bf9492 | 18660 | case DW_AT_extension: |
48fbe735 YQ |
18661 | has_specification = 1; |
18662 | spec_offset = dwarf2_get_ref_die_offset (&attr); | |
18663 | spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt | |
36586728 | 18664 | || cu->per_cu->is_dwz); |
c906108c SS |
18665 | break; |
18666 | case DW_AT_sibling: | |
18667 | /* Ignore absolute siblings, they might point outside of | |
18668 | the current compile unit. */ | |
18669 | if (attr.form == DW_FORM_ref_addr) | |
b98664d3 | 18670 | complaint (_("ignoring absolute DW_AT_sibling")); |
c906108c | 18671 | else |
b9502d3f | 18672 | { |
48fbe735 | 18673 | const gdb_byte *buffer = reader->buffer; |
9c541725 PA |
18674 | sect_offset off = dwarf2_get_ref_die_offset (&attr); |
18675 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); | |
b9502d3f WN |
18676 | |
18677 | if (sibling_ptr < info_ptr) | |
b98664d3 | 18678 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 KS |
18679 | else if (sibling_ptr > reader->buffer_end) |
18680 | dwarf2_section_buffer_overflow_complaint (reader->die_section); | |
b9502d3f | 18681 | else |
48fbe735 | 18682 | sibling = sibling_ptr; |
b9502d3f | 18683 | } |
c906108c | 18684 | break; |
fa4028e9 | 18685 | case DW_AT_byte_size: |
48fbe735 | 18686 | has_byte_size = 1; |
fa4028e9 | 18687 | break; |
ff908ebf | 18688 | case DW_AT_const_value: |
48fbe735 | 18689 | has_const_value = 1; |
ff908ebf | 18690 | break; |
68511cec CES |
18691 | case DW_AT_calling_convention: |
18692 | /* DWARF doesn't provide a way to identify a program's source-level | |
18693 | entry point. DW_AT_calling_convention attributes are only meant | |
18694 | to describe functions' calling conventions. | |
18695 | ||
18696 | However, because it's a necessary piece of information in | |
0c1b455e TT |
18697 | Fortran, and before DWARF 4 DW_CC_program was the only |
18698 | piece of debugging information whose definition refers to | |
18699 | a 'main program' at all, several compilers marked Fortran | |
18700 | main programs with DW_CC_program --- even when those | |
18701 | functions use the standard calling conventions. | |
18702 | ||
18703 | Although DWARF now specifies a way to provide this | |
18704 | information, we support this practice for backward | |
18705 | compatibility. */ | |
68511cec | 18706 | if (DW_UNSND (&attr) == DW_CC_program |
0c1b455e | 18707 | && cu->language == language_fortran) |
48fbe735 | 18708 | main_subprogram = 1; |
68511cec | 18709 | break; |
481860b3 GB |
18710 | case DW_AT_inline: |
18711 | if (DW_UNSND (&attr) == DW_INL_inlined | |
18712 | || DW_UNSND (&attr) == DW_INL_declared_inlined) | |
48fbe735 | 18713 | may_be_inlined = 1; |
481860b3 | 18714 | break; |
95554aad TT |
18715 | |
18716 | case DW_AT_import: | |
48fbe735 | 18717 | if (tag == DW_TAG_imported_unit) |
36586728 | 18718 | { |
48fbe735 YQ |
18719 | d.sect_off = dwarf2_get_ref_die_offset (&attr); |
18720 | is_dwz = (attr.form == DW_FORM_GNU_ref_alt | |
36586728 TT |
18721 | || cu->per_cu->is_dwz); |
18722 | } | |
95554aad TT |
18723 | break; |
18724 | ||
0c1b455e | 18725 | case DW_AT_main_subprogram: |
48fbe735 | 18726 | main_subprogram = DW_UNSND (&attr); |
0c1b455e TT |
18727 | break; |
18728 | ||
c906108c SS |
18729 | default: |
18730 | break; | |
18731 | } | |
18732 | } | |
18733 | ||
91da1414 | 18734 | if (high_pc_relative) |
48fbe735 | 18735 | highpc += lowpc; |
91da1414 | 18736 | |
9373cf26 JK |
18737 | if (has_low_pc_attr && has_high_pc_attr) |
18738 | { | |
18739 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
18740 | eliminate duplicate copies of functions and vtables and such. | |
18741 | The linker will arbitrarily choose one and discard the others. | |
18742 | The AT_*_pc values for such functions refer to local labels in | |
18743 | these sections. If the section from that file was discarded, the | |
18744 | labels are not in the output, so the relocs get a value of 0. | |
18745 | If this is a discarded function, mark the pc bounds as invalid, | |
18746 | so that GDB will ignore it. */ | |
48fbe735 | 18747 | if (lowpc == 0 && !dwarf2_per_objfile->has_section_at_zero) |
9373cf26 | 18748 | { |
48fbe735 | 18749 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
bb5ed363 | 18750 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 | 18751 | |
b98664d3 | 18752 | complaint (_("DW_AT_low_pc %s is zero " |
9d8780f0 | 18753 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
18754 | paddress (gdbarch, lowpc), |
18755 | sect_offset_str (sect_off), | |
9d8780f0 | 18756 | objfile_name (objfile)); |
9373cf26 JK |
18757 | } |
18758 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
48fbe735 | 18759 | else if (lowpc >= highpc) |
9373cf26 | 18760 | { |
48fbe735 | 18761 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
bb5ed363 | 18762 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 | 18763 | |
b98664d3 | 18764 | complaint (_("DW_AT_low_pc %s is not < DW_AT_high_pc %s " |
9d8780f0 | 18765 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
18766 | paddress (gdbarch, lowpc), |
18767 | paddress (gdbarch, highpc), | |
18768 | sect_offset_str (sect_off), | |
9c541725 | 18769 | objfile_name (objfile)); |
9373cf26 JK |
18770 | } |
18771 | else | |
48fbe735 | 18772 | has_pc_info = 1; |
9373cf26 | 18773 | } |
85cbf3d3 | 18774 | |
c906108c SS |
18775 | return info_ptr; |
18776 | } | |
18777 | ||
72bf9492 DJ |
18778 | /* Find a cached partial DIE at OFFSET in CU. */ |
18779 | ||
d590ff25 YQ |
18780 | struct partial_die_info * |
18781 | dwarf2_cu::find_partial_die (sect_offset sect_off) | |
72bf9492 DJ |
18782 | { |
18783 | struct partial_die_info *lookup_die = NULL; | |
6f06d47b | 18784 | struct partial_die_info part_die (sect_off); |
72bf9492 | 18785 | |
9a3c8263 | 18786 | lookup_die = ((struct partial_die_info *) |
d590ff25 | 18787 | htab_find_with_hash (partial_dies, &part_die, |
9c541725 | 18788 | to_underlying (sect_off))); |
72bf9492 | 18789 | |
72bf9492 DJ |
18790 | return lookup_die; |
18791 | } | |
18792 | ||
348e048f DE |
18793 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
18794 | except in the case of .debug_types DIEs which do not reference | |
18795 | outside their CU (they do however referencing other types via | |
55f1336d | 18796 | DW_FORM_ref_sig8). */ |
72bf9492 DJ |
18797 | |
18798 | static struct partial_die_info * | |
9c541725 | 18799 | find_partial_die (sect_offset sect_off, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 18800 | { |
518817b3 SM |
18801 | struct dwarf2_per_objfile *dwarf2_per_objfile |
18802 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 18803 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
5afb4e99 DJ |
18804 | struct dwarf2_per_cu_data *per_cu = NULL; |
18805 | struct partial_die_info *pd = NULL; | |
72bf9492 | 18806 | |
36586728 | 18807 | if (offset_in_dwz == cu->per_cu->is_dwz |
9c541725 | 18808 | && offset_in_cu_p (&cu->header, sect_off)) |
5afb4e99 | 18809 | { |
d590ff25 | 18810 | pd = cu->find_partial_die (sect_off); |
5afb4e99 DJ |
18811 | if (pd != NULL) |
18812 | return pd; | |
0d99eb77 DE |
18813 | /* We missed recording what we needed. |
18814 | Load all dies and try again. */ | |
18815 | per_cu = cu->per_cu; | |
5afb4e99 | 18816 | } |
0d99eb77 DE |
18817 | else |
18818 | { | |
18819 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 18820 | if (cu->per_cu->is_debug_types) |
0d99eb77 | 18821 | { |
9d8780f0 SM |
18822 | error (_("Dwarf Error: Type Unit at offset %s contains" |
18823 | " external reference to offset %s [in module %s].\n"), | |
18824 | sect_offset_str (cu->header.sect_off), sect_offset_str (sect_off), | |
0d99eb77 DE |
18825 | bfd_get_filename (objfile->obfd)); |
18826 | } | |
9c541725 | 18827 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
ed2dc618 | 18828 | dwarf2_per_objfile); |
72bf9492 | 18829 | |
0d99eb77 DE |
18830 | if (per_cu->cu == NULL || per_cu->cu->partial_dies == NULL) |
18831 | load_partial_comp_unit (per_cu); | |
ae038cb0 | 18832 | |
0d99eb77 | 18833 | per_cu->cu->last_used = 0; |
d590ff25 | 18834 | pd = per_cu->cu->find_partial_die (sect_off); |
0d99eb77 | 18835 | } |
5afb4e99 | 18836 | |
dee91e82 DE |
18837 | /* If we didn't find it, and not all dies have been loaded, |
18838 | load them all and try again. */ | |
18839 | ||
5afb4e99 DJ |
18840 | if (pd == NULL && per_cu->load_all_dies == 0) |
18841 | { | |
5afb4e99 | 18842 | per_cu->load_all_dies = 1; |
fd820528 DE |
18843 | |
18844 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
18845 | THIS_CU->cu may already be in use. So we can't just free it and | |
18846 | replace its DIEs with the ones we read in. Instead, we leave those | |
18847 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
18848 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
18849 | set. */ | |
dee91e82 | 18850 | load_partial_comp_unit (per_cu); |
5afb4e99 | 18851 | |
d590ff25 | 18852 | pd = per_cu->cu->find_partial_die (sect_off); |
5afb4e99 DJ |
18853 | } |
18854 | ||
18855 | if (pd == NULL) | |
18856 | internal_error (__FILE__, __LINE__, | |
9d8780f0 | 18857 | _("could not find partial DIE %s " |
3e43a32a | 18858 | "in cache [from module %s]\n"), |
9d8780f0 | 18859 | sect_offset_str (sect_off), bfd_get_filename (objfile->obfd)); |
5afb4e99 | 18860 | return pd; |
72bf9492 DJ |
18861 | } |
18862 | ||
abc72ce4 DE |
18863 | /* See if we can figure out if the class lives in a namespace. We do |
18864 | this by looking for a member function; its demangled name will | |
18865 | contain namespace info, if there is any. */ | |
18866 | ||
18867 | static void | |
18868 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
18869 | struct dwarf2_cu *cu) | |
18870 | { | |
18871 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
18872 | what template types look like, because the demangler | |
18873 | frequently doesn't give the same name as the debug info. We | |
18874 | could fix this by only using the demangled name to get the | |
18875 | prefix (but see comment in read_structure_type). */ | |
18876 | ||
18877 | struct partial_die_info *real_pdi; | |
18878 | struct partial_die_info *child_pdi; | |
18879 | ||
18880 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
18881 | we should not do this. We'll prepend the parent's fully qualified | |
18882 | name when we create the partial symbol. */ | |
18883 | ||
18884 | real_pdi = struct_pdi; | |
18885 | while (real_pdi->has_specification) | |
36586728 TT |
18886 | real_pdi = find_partial_die (real_pdi->spec_offset, |
18887 | real_pdi->spec_is_dwz, cu); | |
abc72ce4 DE |
18888 | |
18889 | if (real_pdi->die_parent != NULL) | |
18890 | return; | |
18891 | ||
18892 | for (child_pdi = struct_pdi->die_child; | |
18893 | child_pdi != NULL; | |
18894 | child_pdi = child_pdi->die_sibling) | |
18895 | { | |
18896 | if (child_pdi->tag == DW_TAG_subprogram | |
18897 | && child_pdi->linkage_name != NULL) | |
18898 | { | |
18899 | char *actual_class_name | |
18900 | = language_class_name_from_physname (cu->language_defn, | |
18901 | child_pdi->linkage_name); | |
18902 | if (actual_class_name != NULL) | |
18903 | { | |
518817b3 | 18904 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
abc72ce4 | 18905 | struct_pdi->name |
224c3ddb | 18906 | = ((const char *) |
e3b94546 | 18907 | obstack_copy0 (&objfile->per_bfd->storage_obstack, |
224c3ddb SM |
18908 | actual_class_name, |
18909 | strlen (actual_class_name))); | |
abc72ce4 DE |
18910 | xfree (actual_class_name); |
18911 | } | |
18912 | break; | |
18913 | } | |
18914 | } | |
18915 | } | |
18916 | ||
52356b79 YQ |
18917 | void |
18918 | partial_die_info::fixup (struct dwarf2_cu *cu) | |
72bf9492 | 18919 | { |
abc72ce4 DE |
18920 | /* Once we've fixed up a die, there's no point in doing so again. |
18921 | This also avoids a memory leak if we were to call | |
18922 | guess_partial_die_structure_name multiple times. */ | |
52356b79 | 18923 | if (fixup_called) |
abc72ce4 DE |
18924 | return; |
18925 | ||
72bf9492 DJ |
18926 | /* If we found a reference attribute and the DIE has no name, try |
18927 | to find a name in the referred to DIE. */ | |
18928 | ||
52356b79 | 18929 | if (name == NULL && has_specification) |
72bf9492 DJ |
18930 | { |
18931 | struct partial_die_info *spec_die; | |
72bf9492 | 18932 | |
52356b79 | 18933 | spec_die = find_partial_die (spec_offset, spec_is_dwz, cu); |
72bf9492 | 18934 | |
52356b79 | 18935 | spec_die->fixup (cu); |
72bf9492 DJ |
18936 | |
18937 | if (spec_die->name) | |
18938 | { | |
52356b79 | 18939 | name = spec_die->name; |
72bf9492 DJ |
18940 | |
18941 | /* Copy DW_AT_external attribute if it is set. */ | |
18942 | if (spec_die->is_external) | |
52356b79 | 18943 | is_external = spec_die->is_external; |
72bf9492 DJ |
18944 | } |
18945 | } | |
18946 | ||
18947 | /* Set default names for some unnamed DIEs. */ | |
72bf9492 | 18948 | |
52356b79 YQ |
18949 | if (name == NULL && tag == DW_TAG_namespace) |
18950 | name = CP_ANONYMOUS_NAMESPACE_STR; | |
72bf9492 | 18951 | |
abc72ce4 DE |
18952 | /* If there is no parent die to provide a namespace, and there are |
18953 | children, see if we can determine the namespace from their linkage | |
122d1940 | 18954 | name. */ |
abc72ce4 | 18955 | if (cu->language == language_cplus |
518817b3 SM |
18956 | && !VEC_empty (dwarf2_section_info_def, |
18957 | cu->per_cu->dwarf2_per_objfile->types) | |
52356b79 YQ |
18958 | && die_parent == NULL |
18959 | && has_children | |
18960 | && (tag == DW_TAG_class_type | |
18961 | || tag == DW_TAG_structure_type | |
18962 | || tag == DW_TAG_union_type)) | |
18963 | guess_partial_die_structure_name (this, cu); | |
abc72ce4 | 18964 | |
53832f31 TT |
18965 | /* GCC might emit a nameless struct or union that has a linkage |
18966 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
52356b79 YQ |
18967 | if (name == NULL |
18968 | && (tag == DW_TAG_class_type | |
18969 | || tag == DW_TAG_interface_type | |
18970 | || tag == DW_TAG_structure_type | |
18971 | || tag == DW_TAG_union_type) | |
18972 | && linkage_name != NULL) | |
53832f31 TT |
18973 | { |
18974 | char *demangled; | |
18975 | ||
52356b79 | 18976 | demangled = gdb_demangle (linkage_name, DMGL_TYPES); |
53832f31 TT |
18977 | if (demangled) |
18978 | { | |
96408a79 SA |
18979 | const char *base; |
18980 | ||
18981 | /* Strip any leading namespaces/classes, keep only the base name. | |
18982 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
18983 | base = strrchr (demangled, ':'); | |
18984 | if (base && base > demangled && base[-1] == ':') | |
18985 | base++; | |
18986 | else | |
18987 | base = demangled; | |
18988 | ||
518817b3 | 18989 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
52356b79 | 18990 | name |
224c3ddb | 18991 | = ((const char *) |
e3b94546 | 18992 | obstack_copy0 (&objfile->per_bfd->storage_obstack, |
224c3ddb | 18993 | base, strlen (base))); |
53832f31 TT |
18994 | xfree (demangled); |
18995 | } | |
18996 | } | |
18997 | ||
52356b79 | 18998 | fixup_called = 1; |
72bf9492 DJ |
18999 | } |
19000 | ||
a8329558 | 19001 | /* Read an attribute value described by an attribute form. */ |
c906108c | 19002 | |
d521ce57 | 19003 | static const gdb_byte * |
dee91e82 DE |
19004 | read_attribute_value (const struct die_reader_specs *reader, |
19005 | struct attribute *attr, unsigned form, | |
43988095 | 19006 | LONGEST implicit_const, const gdb_byte *info_ptr) |
c906108c | 19007 | { |
dee91e82 | 19008 | struct dwarf2_cu *cu = reader->cu; |
518817b3 SM |
19009 | struct dwarf2_per_objfile *dwarf2_per_objfile |
19010 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 19011 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 19012 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
dee91e82 | 19013 | bfd *abfd = reader->abfd; |
e7c27a73 | 19014 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
19015 | unsigned int bytes_read; |
19016 | struct dwarf_block *blk; | |
19017 | ||
aead7601 | 19018 | attr->form = (enum dwarf_form) form; |
a8329558 | 19019 | switch (form) |
c906108c | 19020 | { |
c906108c | 19021 | case DW_FORM_ref_addr: |
ae411497 | 19022 | if (cu->header.version == 2) |
4568ecf9 | 19023 | DW_UNSND (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
ae411497 | 19024 | else |
4568ecf9 DE |
19025 | DW_UNSND (attr) = read_offset (abfd, info_ptr, |
19026 | &cu->header, &bytes_read); | |
ae411497 TT |
19027 | info_ptr += bytes_read; |
19028 | break; | |
36586728 TT |
19029 | case DW_FORM_GNU_ref_alt: |
19030 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
19031 | info_ptr += bytes_read; | |
19032 | break; | |
ae411497 | 19033 | case DW_FORM_addr: |
e7c27a73 | 19034 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
3e29f34a | 19035 | DW_ADDR (attr) = gdbarch_adjust_dwarf2_addr (gdbarch, DW_ADDR (attr)); |
107d2387 | 19036 | info_ptr += bytes_read; |
c906108c SS |
19037 | break; |
19038 | case DW_FORM_block2: | |
7b5a2f43 | 19039 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19040 | blk->size = read_2_bytes (abfd, info_ptr); |
19041 | info_ptr += 2; | |
19042 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19043 | info_ptr += blk->size; | |
19044 | DW_BLOCK (attr) = blk; | |
19045 | break; | |
19046 | case DW_FORM_block4: | |
7b5a2f43 | 19047 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19048 | blk->size = read_4_bytes (abfd, info_ptr); |
19049 | info_ptr += 4; | |
19050 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19051 | info_ptr += blk->size; | |
19052 | DW_BLOCK (attr) = blk; | |
19053 | break; | |
19054 | case DW_FORM_data2: | |
19055 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
19056 | info_ptr += 2; | |
19057 | break; | |
19058 | case DW_FORM_data4: | |
19059 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
19060 | info_ptr += 4; | |
19061 | break; | |
19062 | case DW_FORM_data8: | |
19063 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
19064 | info_ptr += 8; | |
19065 | break; | |
0224619f JK |
19066 | case DW_FORM_data16: |
19067 | blk = dwarf_alloc_block (cu); | |
19068 | blk->size = 16; | |
19069 | blk->data = read_n_bytes (abfd, info_ptr, 16); | |
19070 | info_ptr += 16; | |
19071 | DW_BLOCK (attr) = blk; | |
19072 | break; | |
2dc7f7b3 TT |
19073 | case DW_FORM_sec_offset: |
19074 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
19075 | info_ptr += bytes_read; | |
19076 | break; | |
c906108c | 19077 | case DW_FORM_string: |
9b1c24c8 | 19078 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 19079 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
19080 | info_ptr += bytes_read; |
19081 | break; | |
4bdf3d34 | 19082 | case DW_FORM_strp: |
36586728 TT |
19083 | if (!cu->per_cu->is_dwz) |
19084 | { | |
ed2dc618 SM |
19085 | DW_STRING (attr) = read_indirect_string (dwarf2_per_objfile, |
19086 | abfd, info_ptr, cu_header, | |
36586728 TT |
19087 | &bytes_read); |
19088 | DW_STRING_IS_CANONICAL (attr) = 0; | |
19089 | info_ptr += bytes_read; | |
19090 | break; | |
19091 | } | |
19092 | /* FALLTHROUGH */ | |
43988095 JK |
19093 | case DW_FORM_line_strp: |
19094 | if (!cu->per_cu->is_dwz) | |
19095 | { | |
ed2dc618 SM |
19096 | DW_STRING (attr) = read_indirect_line_string (dwarf2_per_objfile, |
19097 | abfd, info_ptr, | |
43988095 JK |
19098 | cu_header, &bytes_read); |
19099 | DW_STRING_IS_CANONICAL (attr) = 0; | |
19100 | info_ptr += bytes_read; | |
19101 | break; | |
19102 | } | |
19103 | /* FALLTHROUGH */ | |
36586728 TT |
19104 | case DW_FORM_GNU_strp_alt: |
19105 | { | |
ed2dc618 | 19106 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
36586728 TT |
19107 | LONGEST str_offset = read_offset (abfd, info_ptr, cu_header, |
19108 | &bytes_read); | |
19109 | ||
ed2dc618 SM |
19110 | DW_STRING (attr) = read_indirect_string_from_dwz (objfile, |
19111 | dwz, str_offset); | |
36586728 TT |
19112 | DW_STRING_IS_CANONICAL (attr) = 0; |
19113 | info_ptr += bytes_read; | |
19114 | } | |
4bdf3d34 | 19115 | break; |
2dc7f7b3 | 19116 | case DW_FORM_exprloc: |
c906108c | 19117 | case DW_FORM_block: |
7b5a2f43 | 19118 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19119 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19120 | info_ptr += bytes_read; | |
19121 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19122 | info_ptr += blk->size; | |
19123 | DW_BLOCK (attr) = blk; | |
19124 | break; | |
19125 | case DW_FORM_block1: | |
7b5a2f43 | 19126 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19127 | blk->size = read_1_byte (abfd, info_ptr); |
19128 | info_ptr += 1; | |
19129 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19130 | info_ptr += blk->size; | |
19131 | DW_BLOCK (attr) = blk; | |
19132 | break; | |
19133 | case DW_FORM_data1: | |
19134 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
19135 | info_ptr += 1; | |
19136 | break; | |
19137 | case DW_FORM_flag: | |
19138 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
19139 | info_ptr += 1; | |
19140 | break; | |
2dc7f7b3 TT |
19141 | case DW_FORM_flag_present: |
19142 | DW_UNSND (attr) = 1; | |
19143 | break; | |
c906108c SS |
19144 | case DW_FORM_sdata: |
19145 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
19146 | info_ptr += bytes_read; | |
19147 | break; | |
19148 | case DW_FORM_udata: | |
19149 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
19150 | info_ptr += bytes_read; | |
19151 | break; | |
19152 | case DW_FORM_ref1: | |
9c541725 | 19153 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19154 | + read_1_byte (abfd, info_ptr)); |
c906108c SS |
19155 | info_ptr += 1; |
19156 | break; | |
19157 | case DW_FORM_ref2: | |
9c541725 | 19158 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19159 | + read_2_bytes (abfd, info_ptr)); |
c906108c SS |
19160 | info_ptr += 2; |
19161 | break; | |
19162 | case DW_FORM_ref4: | |
9c541725 | 19163 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19164 | + read_4_bytes (abfd, info_ptr)); |
c906108c SS |
19165 | info_ptr += 4; |
19166 | break; | |
613e1657 | 19167 | case DW_FORM_ref8: |
9c541725 | 19168 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19169 | + read_8_bytes (abfd, info_ptr)); |
613e1657 KB |
19170 | info_ptr += 8; |
19171 | break; | |
55f1336d | 19172 | case DW_FORM_ref_sig8: |
ac9ec31b | 19173 | DW_SIGNATURE (attr) = read_8_bytes (abfd, info_ptr); |
348e048f DE |
19174 | info_ptr += 8; |
19175 | break; | |
c906108c | 19176 | case DW_FORM_ref_udata: |
9c541725 | 19177 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19178 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); |
c906108c SS |
19179 | info_ptr += bytes_read; |
19180 | break; | |
c906108c | 19181 | case DW_FORM_indirect: |
a8329558 KW |
19182 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19183 | info_ptr += bytes_read; | |
43988095 JK |
19184 | if (form == DW_FORM_implicit_const) |
19185 | { | |
19186 | implicit_const = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
19187 | info_ptr += bytes_read; | |
19188 | } | |
19189 | info_ptr = read_attribute_value (reader, attr, form, implicit_const, | |
19190 | info_ptr); | |
19191 | break; | |
19192 | case DW_FORM_implicit_const: | |
19193 | DW_SND (attr) = implicit_const; | |
a8329558 | 19194 | break; |
3019eac3 DE |
19195 | case DW_FORM_GNU_addr_index: |
19196 | if (reader->dwo_file == NULL) | |
19197 | { | |
19198 | /* For now flag a hard error. | |
19199 | Later we can turn this into a complaint. */ | |
19200 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
19201 | dwarf_form_name (form), | |
19202 | bfd_get_filename (abfd)); | |
19203 | } | |
19204 | DW_ADDR (attr) = read_addr_index_from_leb128 (cu, info_ptr, &bytes_read); | |
19205 | info_ptr += bytes_read; | |
19206 | break; | |
19207 | case DW_FORM_GNU_str_index: | |
19208 | if (reader->dwo_file == NULL) | |
19209 | { | |
19210 | /* For now flag a hard error. | |
19211 | Later we can turn this into a complaint if warranted. */ | |
19212 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
19213 | dwarf_form_name (form), | |
19214 | bfd_get_filename (abfd)); | |
19215 | } | |
19216 | { | |
19217 | ULONGEST str_index = | |
19218 | read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
19219 | ||
342587c4 | 19220 | DW_STRING (attr) = read_str_index (reader, str_index); |
3019eac3 DE |
19221 | DW_STRING_IS_CANONICAL (attr) = 0; |
19222 | info_ptr += bytes_read; | |
19223 | } | |
19224 | break; | |
c906108c | 19225 | default: |
8a3fe4f8 | 19226 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
19227 | dwarf_form_name (form), |
19228 | bfd_get_filename (abfd)); | |
c906108c | 19229 | } |
28e94949 | 19230 | |
36586728 | 19231 | /* Super hack. */ |
7771576e | 19232 | if (cu->per_cu->is_dwz && attr_form_is_ref (attr)) |
36586728 TT |
19233 | attr->form = DW_FORM_GNU_ref_alt; |
19234 | ||
28e94949 JB |
19235 | /* We have seen instances where the compiler tried to emit a byte |
19236 | size attribute of -1 which ended up being encoded as an unsigned | |
19237 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
19238 | an object of this size seems pretty unlikely so we can relatively | |
19239 | safely treat these cases as if the size attribute was invalid and | |
19240 | treat them as zero by default. */ | |
19241 | if (attr->name == DW_AT_byte_size | |
19242 | && form == DW_FORM_data4 | |
19243 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
19244 | { |
19245 | complaint | |
b98664d3 | 19246 | (_("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
43bbcdc2 | 19247 | hex_string (DW_UNSND (attr))); |
01c66ae6 JB |
19248 | DW_UNSND (attr) = 0; |
19249 | } | |
28e94949 | 19250 | |
c906108c SS |
19251 | return info_ptr; |
19252 | } | |
19253 | ||
a8329558 KW |
19254 | /* Read an attribute described by an abbreviated attribute. */ |
19255 | ||
d521ce57 | 19256 | static const gdb_byte * |
dee91e82 DE |
19257 | read_attribute (const struct die_reader_specs *reader, |
19258 | struct attribute *attr, struct attr_abbrev *abbrev, | |
d521ce57 | 19259 | const gdb_byte *info_ptr) |
a8329558 KW |
19260 | { |
19261 | attr->name = abbrev->name; | |
43988095 JK |
19262 | return read_attribute_value (reader, attr, abbrev->form, |
19263 | abbrev->implicit_const, info_ptr); | |
a8329558 KW |
19264 | } |
19265 | ||
0963b4bd | 19266 | /* Read dwarf information from a buffer. */ |
c906108c SS |
19267 | |
19268 | static unsigned int | |
a1855c1d | 19269 | read_1_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 19270 | { |
fe1b8b76 | 19271 | return bfd_get_8 (abfd, buf); |
c906108c SS |
19272 | } |
19273 | ||
19274 | static int | |
a1855c1d | 19275 | read_1_signed_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 19276 | { |
fe1b8b76 | 19277 | return bfd_get_signed_8 (abfd, buf); |
c906108c SS |
19278 | } |
19279 | ||
19280 | static unsigned int | |
a1855c1d | 19281 | read_2_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 19282 | { |
fe1b8b76 | 19283 | return bfd_get_16 (abfd, buf); |
c906108c SS |
19284 | } |
19285 | ||
21ae7a4d | 19286 | static int |
a1855c1d | 19287 | read_2_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
19288 | { |
19289 | return bfd_get_signed_16 (abfd, buf); | |
19290 | } | |
19291 | ||
c906108c | 19292 | static unsigned int |
a1855c1d | 19293 | read_4_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 19294 | { |
fe1b8b76 | 19295 | return bfd_get_32 (abfd, buf); |
c906108c SS |
19296 | } |
19297 | ||
21ae7a4d | 19298 | static int |
a1855c1d | 19299 | read_4_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
19300 | { |
19301 | return bfd_get_signed_32 (abfd, buf); | |
19302 | } | |
19303 | ||
93311388 | 19304 | static ULONGEST |
a1855c1d | 19305 | read_8_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 19306 | { |
fe1b8b76 | 19307 | return bfd_get_64 (abfd, buf); |
c906108c SS |
19308 | } |
19309 | ||
19310 | static CORE_ADDR | |
d521ce57 | 19311 | read_address (bfd *abfd, const gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 19312 | unsigned int *bytes_read) |
c906108c | 19313 | { |
e7c27a73 | 19314 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
19315 | CORE_ADDR retval = 0; |
19316 | ||
107d2387 | 19317 | if (cu_header->signed_addr_p) |
c906108c | 19318 | { |
107d2387 AC |
19319 | switch (cu_header->addr_size) |
19320 | { | |
19321 | case 2: | |
fe1b8b76 | 19322 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
19323 | break; |
19324 | case 4: | |
fe1b8b76 | 19325 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
19326 | break; |
19327 | case 8: | |
fe1b8b76 | 19328 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
19329 | break; |
19330 | default: | |
8e65ff28 | 19331 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 19332 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 19333 | bfd_get_filename (abfd)); |
107d2387 AC |
19334 | } |
19335 | } | |
19336 | else | |
19337 | { | |
19338 | switch (cu_header->addr_size) | |
19339 | { | |
19340 | case 2: | |
fe1b8b76 | 19341 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
19342 | break; |
19343 | case 4: | |
fe1b8b76 | 19344 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
19345 | break; |
19346 | case 8: | |
fe1b8b76 | 19347 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
19348 | break; |
19349 | default: | |
8e65ff28 | 19350 | internal_error (__FILE__, __LINE__, |
a73c6dcd MS |
19351 | _("read_address: bad switch, " |
19352 | "unsigned [in module %s]"), | |
659b0389 | 19353 | bfd_get_filename (abfd)); |
107d2387 | 19354 | } |
c906108c | 19355 | } |
64367e0a | 19356 | |
107d2387 AC |
19357 | *bytes_read = cu_header->addr_size; |
19358 | return retval; | |
c906108c SS |
19359 | } |
19360 | ||
f7ef9339 | 19361 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
19362 | specification allows the initial length to take up either 4 bytes |
19363 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
19364 | bytes describe the length and all offsets will be 8 bytes in length | |
19365 | instead of 4. | |
19366 | ||
f7ef9339 KB |
19367 | An older, non-standard 64-bit format is also handled by this |
19368 | function. The older format in question stores the initial length | |
19369 | as an 8-byte quantity without an escape value. Lengths greater | |
19370 | than 2^32 aren't very common which means that the initial 4 bytes | |
19371 | is almost always zero. Since a length value of zero doesn't make | |
19372 | sense for the 32-bit format, this initial zero can be considered to | |
19373 | be an escape value which indicates the presence of the older 64-bit | |
19374 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
19375 | greater than 4GB. If it becomes necessary to handle lengths |
19376 | somewhat larger than 4GB, we could allow other small values (such | |
19377 | as the non-sensical values of 1, 2, and 3) to also be used as | |
19378 | escape values indicating the presence of the old format. | |
f7ef9339 | 19379 | |
917c78fc MK |
19380 | The value returned via bytes_read should be used to increment the |
19381 | relevant pointer after calling read_initial_length(). | |
c764a876 | 19382 | |
613e1657 KB |
19383 | [ Note: read_initial_length() and read_offset() are based on the |
19384 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 19385 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
19386 | from: |
19387 | ||
f7ef9339 | 19388 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
6e70227d | 19389 | |
613e1657 KB |
19390 | This document is only a draft and is subject to change. (So beware.) |
19391 | ||
f7ef9339 | 19392 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
19393 | determined empirically by examining 64-bit ELF files produced by |
19394 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
19395 | |
19396 | - Kevin, July 16, 2002 | |
613e1657 KB |
19397 | ] */ |
19398 | ||
19399 | static LONGEST | |
d521ce57 | 19400 | read_initial_length (bfd *abfd, const gdb_byte *buf, unsigned int *bytes_read) |
613e1657 | 19401 | { |
fe1b8b76 | 19402 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 19403 | |
dd373385 | 19404 | if (length == 0xffffffff) |
613e1657 | 19405 | { |
fe1b8b76 | 19406 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 19407 | *bytes_read = 12; |
613e1657 | 19408 | } |
dd373385 | 19409 | else if (length == 0) |
f7ef9339 | 19410 | { |
dd373385 | 19411 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 19412 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 19413 | *bytes_read = 8; |
f7ef9339 | 19414 | } |
613e1657 KB |
19415 | else |
19416 | { | |
19417 | *bytes_read = 4; | |
613e1657 KB |
19418 | } |
19419 | ||
c764a876 DE |
19420 | return length; |
19421 | } | |
dd373385 | 19422 | |
c764a876 DE |
19423 | /* Cover function for read_initial_length. |
19424 | Returns the length of the object at BUF, and stores the size of the | |
19425 | initial length in *BYTES_READ and stores the size that offsets will be in | |
19426 | *OFFSET_SIZE. | |
19427 | If the initial length size is not equivalent to that specified in | |
19428 | CU_HEADER then issue a complaint. | |
19429 | This is useful when reading non-comp-unit headers. */ | |
dd373385 | 19430 | |
c764a876 | 19431 | static LONGEST |
d521ce57 | 19432 | read_checked_initial_length_and_offset (bfd *abfd, const gdb_byte *buf, |
c764a876 DE |
19433 | const struct comp_unit_head *cu_header, |
19434 | unsigned int *bytes_read, | |
19435 | unsigned int *offset_size) | |
19436 | { | |
19437 | LONGEST length = read_initial_length (abfd, buf, bytes_read); | |
19438 | ||
19439 | gdb_assert (cu_header->initial_length_size == 4 | |
19440 | || cu_header->initial_length_size == 8 | |
19441 | || cu_header->initial_length_size == 12); | |
19442 | ||
19443 | if (cu_header->initial_length_size != *bytes_read) | |
b98664d3 | 19444 | complaint (_("intermixed 32-bit and 64-bit DWARF sections")); |
dd373385 | 19445 | |
c764a876 | 19446 | *offset_size = (*bytes_read == 4) ? 4 : 8; |
dd373385 | 19447 | return length; |
613e1657 KB |
19448 | } |
19449 | ||
19450 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 19451 | given by cu_header->offset_size. */ |
613e1657 KB |
19452 | |
19453 | static LONGEST | |
d521ce57 TT |
19454 | read_offset (bfd *abfd, const gdb_byte *buf, |
19455 | const struct comp_unit_head *cu_header, | |
891d2f0b | 19456 | unsigned int *bytes_read) |
c764a876 DE |
19457 | { |
19458 | LONGEST offset = read_offset_1 (abfd, buf, cu_header->offset_size); | |
9a619af0 | 19459 | |
c764a876 DE |
19460 | *bytes_read = cu_header->offset_size; |
19461 | return offset; | |
19462 | } | |
19463 | ||
19464 | /* Read an offset from the data stream. */ | |
19465 | ||
19466 | static LONGEST | |
d521ce57 | 19467 | read_offset_1 (bfd *abfd, const gdb_byte *buf, unsigned int offset_size) |
613e1657 KB |
19468 | { |
19469 | LONGEST retval = 0; | |
19470 | ||
c764a876 | 19471 | switch (offset_size) |
613e1657 KB |
19472 | { |
19473 | case 4: | |
fe1b8b76 | 19474 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
19475 | break; |
19476 | case 8: | |
fe1b8b76 | 19477 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
19478 | break; |
19479 | default: | |
8e65ff28 | 19480 | internal_error (__FILE__, __LINE__, |
c764a876 | 19481 | _("read_offset_1: bad switch [in module %s]"), |
659b0389 | 19482 | bfd_get_filename (abfd)); |
613e1657 KB |
19483 | } |
19484 | ||
917c78fc | 19485 | return retval; |
613e1657 KB |
19486 | } |
19487 | ||
d521ce57 TT |
19488 | static const gdb_byte * |
19489 | read_n_bytes (bfd *abfd, const gdb_byte *buf, unsigned int size) | |
c906108c SS |
19490 | { |
19491 | /* If the size of a host char is 8 bits, we can return a pointer | |
19492 | to the buffer, otherwise we have to copy the data to a buffer | |
19493 | allocated on the temporary obstack. */ | |
4bdf3d34 | 19494 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 19495 | return buf; |
c906108c SS |
19496 | } |
19497 | ||
d521ce57 TT |
19498 | static const char * |
19499 | read_direct_string (bfd *abfd, const gdb_byte *buf, | |
19500 | unsigned int *bytes_read_ptr) | |
c906108c SS |
19501 | { |
19502 | /* If the size of a host char is 8 bits, we can return a pointer | |
19503 | to the string, otherwise we have to copy the string to a buffer | |
19504 | allocated on the temporary obstack. */ | |
4bdf3d34 | 19505 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
19506 | if (*buf == '\0') |
19507 | { | |
19508 | *bytes_read_ptr = 1; | |
19509 | return NULL; | |
19510 | } | |
d521ce57 TT |
19511 | *bytes_read_ptr = strlen ((const char *) buf) + 1; |
19512 | return (const char *) buf; | |
4bdf3d34 JJ |
19513 | } |
19514 | ||
43988095 JK |
19515 | /* Return pointer to string at section SECT offset STR_OFFSET with error |
19516 | reporting strings FORM_NAME and SECT_NAME. */ | |
19517 | ||
d521ce57 | 19518 | static const char * |
ed2dc618 SM |
19519 | read_indirect_string_at_offset_from (struct objfile *objfile, |
19520 | bfd *abfd, LONGEST str_offset, | |
43988095 JK |
19521 | struct dwarf2_section_info *sect, |
19522 | const char *form_name, | |
19523 | const char *sect_name) | |
19524 | { | |
ed2dc618 | 19525 | dwarf2_read_section (objfile, sect); |
43988095 JK |
19526 | if (sect->buffer == NULL) |
19527 | error (_("%s used without %s section [in module %s]"), | |
19528 | form_name, sect_name, bfd_get_filename (abfd)); | |
19529 | if (str_offset >= sect->size) | |
19530 | error (_("%s pointing outside of %s section [in module %s]"), | |
19531 | form_name, sect_name, bfd_get_filename (abfd)); | |
4bdf3d34 | 19532 | gdb_assert (HOST_CHAR_BIT == 8); |
43988095 | 19533 | if (sect->buffer[str_offset] == '\0') |
4bdf3d34 | 19534 | return NULL; |
43988095 JK |
19535 | return (const char *) (sect->buffer + str_offset); |
19536 | } | |
19537 | ||
19538 | /* Return pointer to string at .debug_str offset STR_OFFSET. */ | |
19539 | ||
19540 | static const char * | |
ed2dc618 SM |
19541 | read_indirect_string_at_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19542 | bfd *abfd, LONGEST str_offset) | |
43988095 | 19543 | { |
ed2dc618 SM |
19544 | return read_indirect_string_at_offset_from (dwarf2_per_objfile->objfile, |
19545 | abfd, str_offset, | |
43988095 JK |
19546 | &dwarf2_per_objfile->str, |
19547 | "DW_FORM_strp", ".debug_str"); | |
19548 | } | |
19549 | ||
19550 | /* Return pointer to string at .debug_line_str offset STR_OFFSET. */ | |
19551 | ||
19552 | static const char * | |
ed2dc618 SM |
19553 | read_indirect_line_string_at_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19554 | bfd *abfd, LONGEST str_offset) | |
43988095 | 19555 | { |
ed2dc618 SM |
19556 | return read_indirect_string_at_offset_from (dwarf2_per_objfile->objfile, |
19557 | abfd, str_offset, | |
43988095 JK |
19558 | &dwarf2_per_objfile->line_str, |
19559 | "DW_FORM_line_strp", | |
19560 | ".debug_line_str"); | |
c906108c SS |
19561 | } |
19562 | ||
36586728 TT |
19563 | /* Read a string at offset STR_OFFSET in the .debug_str section from |
19564 | the .dwz file DWZ. Throw an error if the offset is too large. If | |
19565 | the string consists of a single NUL byte, return NULL; otherwise | |
19566 | return a pointer to the string. */ | |
19567 | ||
d521ce57 | 19568 | static const char * |
ed2dc618 SM |
19569 | read_indirect_string_from_dwz (struct objfile *objfile, struct dwz_file *dwz, |
19570 | LONGEST str_offset) | |
36586728 | 19571 | { |
ed2dc618 | 19572 | dwarf2_read_section (objfile, &dwz->str); |
36586728 TT |
19573 | |
19574 | if (dwz->str.buffer == NULL) | |
19575 | error (_("DW_FORM_GNU_strp_alt used without .debug_str " | |
19576 | "section [in module %s]"), | |
19577 | bfd_get_filename (dwz->dwz_bfd)); | |
19578 | if (str_offset >= dwz->str.size) | |
19579 | error (_("DW_FORM_GNU_strp_alt pointing outside of " | |
19580 | ".debug_str section [in module %s]"), | |
19581 | bfd_get_filename (dwz->dwz_bfd)); | |
19582 | gdb_assert (HOST_CHAR_BIT == 8); | |
19583 | if (dwz->str.buffer[str_offset] == '\0') | |
19584 | return NULL; | |
d521ce57 | 19585 | return (const char *) (dwz->str.buffer + str_offset); |
36586728 TT |
19586 | } |
19587 | ||
43988095 JK |
19588 | /* Return pointer to string at .debug_str offset as read from BUF. |
19589 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
19590 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
19591 | ||
d521ce57 | 19592 | static const char * |
ed2dc618 SM |
19593 | read_indirect_string (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *abfd, |
19594 | const gdb_byte *buf, | |
cf2c3c16 TT |
19595 | const struct comp_unit_head *cu_header, |
19596 | unsigned int *bytes_read_ptr) | |
19597 | { | |
19598 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
19599 | ||
ed2dc618 | 19600 | return read_indirect_string_at_offset (dwarf2_per_objfile, abfd, str_offset); |
cf2c3c16 TT |
19601 | } |
19602 | ||
43988095 JK |
19603 | /* Return pointer to string at .debug_line_str offset as read from BUF. |
19604 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
19605 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
19606 | ||
19607 | static const char * | |
ed2dc618 SM |
19608 | read_indirect_line_string (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19609 | bfd *abfd, const gdb_byte *buf, | |
43988095 JK |
19610 | const struct comp_unit_head *cu_header, |
19611 | unsigned int *bytes_read_ptr) | |
19612 | { | |
19613 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
19614 | ||
ed2dc618 SM |
19615 | return read_indirect_line_string_at_offset (dwarf2_per_objfile, abfd, |
19616 | str_offset); | |
43988095 JK |
19617 | } |
19618 | ||
19619 | ULONGEST | |
d521ce57 | 19620 | read_unsigned_leb128 (bfd *abfd, const gdb_byte *buf, |
43988095 | 19621 | unsigned int *bytes_read_ptr) |
c906108c | 19622 | { |
12df843f | 19623 | ULONGEST result; |
ce5d95e1 | 19624 | unsigned int num_read; |
870f88f7 | 19625 | int shift; |
c906108c SS |
19626 | unsigned char byte; |
19627 | ||
19628 | result = 0; | |
19629 | shift = 0; | |
19630 | num_read = 0; | |
c906108c SS |
19631 | while (1) |
19632 | { | |
fe1b8b76 | 19633 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
19634 | buf++; |
19635 | num_read++; | |
12df843f | 19636 | result |= ((ULONGEST) (byte & 127) << shift); |
c906108c SS |
19637 | if ((byte & 128) == 0) |
19638 | { | |
19639 | break; | |
19640 | } | |
19641 | shift += 7; | |
19642 | } | |
19643 | *bytes_read_ptr = num_read; | |
19644 | return result; | |
19645 | } | |
19646 | ||
12df843f | 19647 | static LONGEST |
d521ce57 TT |
19648 | read_signed_leb128 (bfd *abfd, const gdb_byte *buf, |
19649 | unsigned int *bytes_read_ptr) | |
c906108c | 19650 | { |
4dd1b460 | 19651 | ULONGEST result; |
870f88f7 | 19652 | int shift, num_read; |
c906108c SS |
19653 | unsigned char byte; |
19654 | ||
19655 | result = 0; | |
19656 | shift = 0; | |
c906108c | 19657 | num_read = 0; |
c906108c SS |
19658 | while (1) |
19659 | { | |
fe1b8b76 | 19660 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
19661 | buf++; |
19662 | num_read++; | |
4dd1b460 | 19663 | result |= ((ULONGEST) (byte & 127) << shift); |
c906108c SS |
19664 | shift += 7; |
19665 | if ((byte & 128) == 0) | |
19666 | { | |
19667 | break; | |
19668 | } | |
19669 | } | |
77e0b926 | 19670 | if ((shift < 8 * sizeof (result)) && (byte & 0x40)) |
4dd1b460 | 19671 | result |= -(((ULONGEST) 1) << shift); |
c906108c SS |
19672 | *bytes_read_ptr = num_read; |
19673 | return result; | |
19674 | } | |
19675 | ||
3019eac3 DE |
19676 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
19677 | ADDR_BASE is the DW_AT_GNU_addr_base attribute or zero. | |
19678 | ADDR_SIZE is the size of addresses from the CU header. */ | |
19679 | ||
19680 | static CORE_ADDR | |
ed2dc618 SM |
19681 | read_addr_index_1 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19682 | unsigned int addr_index, ULONGEST addr_base, int addr_size) | |
3019eac3 DE |
19683 | { |
19684 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
19685 | bfd *abfd = objfile->obfd; | |
19686 | const gdb_byte *info_ptr; | |
19687 | ||
19688 | dwarf2_read_section (objfile, &dwarf2_per_objfile->addr); | |
19689 | if (dwarf2_per_objfile->addr.buffer == NULL) | |
19690 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), | |
4262abfb | 19691 | objfile_name (objfile)); |
3019eac3 DE |
19692 | if (addr_base + addr_index * addr_size >= dwarf2_per_objfile->addr.size) |
19693 | error (_("DW_FORM_addr_index pointing outside of " | |
19694 | ".debug_addr section [in module %s]"), | |
4262abfb | 19695 | objfile_name (objfile)); |
3019eac3 DE |
19696 | info_ptr = (dwarf2_per_objfile->addr.buffer |
19697 | + addr_base + addr_index * addr_size); | |
19698 | if (addr_size == 4) | |
19699 | return bfd_get_32 (abfd, info_ptr); | |
19700 | else | |
19701 | return bfd_get_64 (abfd, info_ptr); | |
19702 | } | |
19703 | ||
19704 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
19705 | ||
19706 | static CORE_ADDR | |
19707 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
19708 | { | |
518817b3 SM |
19709 | return read_addr_index_1 (cu->per_cu->dwarf2_per_objfile, addr_index, |
19710 | cu->addr_base, cu->header.addr_size); | |
3019eac3 DE |
19711 | } |
19712 | ||
19713 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
19714 | ||
19715 | static CORE_ADDR | |
d521ce57 | 19716 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, const gdb_byte *info_ptr, |
3019eac3 DE |
19717 | unsigned int *bytes_read) |
19718 | { | |
518817b3 | 19719 | bfd *abfd = cu->per_cu->dwarf2_per_objfile->objfile->obfd; |
3019eac3 DE |
19720 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); |
19721 | ||
19722 | return read_addr_index (cu, addr_index); | |
19723 | } | |
19724 | ||
19725 | /* Data structure to pass results from dwarf2_read_addr_index_reader | |
19726 | back to dwarf2_read_addr_index. */ | |
19727 | ||
19728 | struct dwarf2_read_addr_index_data | |
19729 | { | |
19730 | ULONGEST addr_base; | |
19731 | int addr_size; | |
19732 | }; | |
19733 | ||
19734 | /* die_reader_func for dwarf2_read_addr_index. */ | |
19735 | ||
19736 | static void | |
19737 | dwarf2_read_addr_index_reader (const struct die_reader_specs *reader, | |
d521ce57 | 19738 | const gdb_byte *info_ptr, |
3019eac3 DE |
19739 | struct die_info *comp_unit_die, |
19740 | int has_children, | |
19741 | void *data) | |
19742 | { | |
19743 | struct dwarf2_cu *cu = reader->cu; | |
19744 | struct dwarf2_read_addr_index_data *aidata = | |
19745 | (struct dwarf2_read_addr_index_data *) data; | |
19746 | ||
19747 | aidata->addr_base = cu->addr_base; | |
19748 | aidata->addr_size = cu->header.addr_size; | |
19749 | } | |
19750 | ||
19751 | /* Given an index in .debug_addr, fetch the value. | |
19752 | NOTE: This can be called during dwarf expression evaluation, | |
19753 | long after the debug information has been read, and thus per_cu->cu | |
19754 | may no longer exist. */ | |
19755 | ||
19756 | CORE_ADDR | |
19757 | dwarf2_read_addr_index (struct dwarf2_per_cu_data *per_cu, | |
19758 | unsigned int addr_index) | |
19759 | { | |
ed2dc618 | 19760 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
3019eac3 DE |
19761 | struct dwarf2_cu *cu = per_cu->cu; |
19762 | ULONGEST addr_base; | |
19763 | int addr_size; | |
19764 | ||
3019eac3 DE |
19765 | /* We need addr_base and addr_size. |
19766 | If we don't have PER_CU->cu, we have to get it. | |
19767 | Nasty, but the alternative is storing the needed info in PER_CU, | |
19768 | which at this point doesn't seem justified: it's not clear how frequently | |
19769 | it would get used and it would increase the size of every PER_CU. | |
19770 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
19771 | so we're not in uncharted territory here. | |
19772 | Alas we need to be a bit more complicated as addr_base is contained | |
19773 | in the DIE. | |
19774 | ||
19775 | We don't need to read the entire CU(/TU). | |
19776 | We just need the header and top level die. | |
a1b64ce1 | 19777 | |
3019eac3 | 19778 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 19779 | For now we skip this optimization. */ |
3019eac3 DE |
19780 | |
19781 | if (cu != NULL) | |
19782 | { | |
19783 | addr_base = cu->addr_base; | |
19784 | addr_size = cu->header.addr_size; | |
19785 | } | |
19786 | else | |
19787 | { | |
19788 | struct dwarf2_read_addr_index_data aidata; | |
19789 | ||
a1b64ce1 DE |
19790 | /* Note: We can't use init_cutu_and_read_dies_simple here, |
19791 | we need addr_base. */ | |
58f0c718 | 19792 | init_cutu_and_read_dies (per_cu, NULL, 0, 0, false, |
a1b64ce1 | 19793 | dwarf2_read_addr_index_reader, &aidata); |
3019eac3 DE |
19794 | addr_base = aidata.addr_base; |
19795 | addr_size = aidata.addr_size; | |
19796 | } | |
19797 | ||
ed2dc618 SM |
19798 | return read_addr_index_1 (dwarf2_per_objfile, addr_index, addr_base, |
19799 | addr_size); | |
3019eac3 DE |
19800 | } |
19801 | ||
57d63ce2 DE |
19802 | /* Given a DW_FORM_GNU_str_index, fetch the string. |
19803 | This is only used by the Fission support. */ | |
3019eac3 | 19804 | |
d521ce57 | 19805 | static const char * |
342587c4 | 19806 | read_str_index (const struct die_reader_specs *reader, ULONGEST str_index) |
3019eac3 | 19807 | { |
ed2dc618 | 19808 | struct dwarf2_cu *cu = reader->cu; |
518817b3 SM |
19809 | struct dwarf2_per_objfile *dwarf2_per_objfile |
19810 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 | 19811 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
c5164cbc | 19812 | const char *objf_name = objfile_name (objfile); |
3019eac3 | 19813 | bfd *abfd = objfile->obfd; |
73869dc2 DE |
19814 | struct dwarf2_section_info *str_section = &reader->dwo_file->sections.str; |
19815 | struct dwarf2_section_info *str_offsets_section = | |
19816 | &reader->dwo_file->sections.str_offsets; | |
d521ce57 | 19817 | const gdb_byte *info_ptr; |
3019eac3 | 19818 | ULONGEST str_offset; |
57d63ce2 | 19819 | static const char form_name[] = "DW_FORM_GNU_str_index"; |
3019eac3 | 19820 | |
73869dc2 DE |
19821 | dwarf2_read_section (objfile, str_section); |
19822 | dwarf2_read_section (objfile, str_offsets_section); | |
19823 | if (str_section->buffer == NULL) | |
57d63ce2 | 19824 | error (_("%s used without .debug_str.dwo section" |
9d8780f0 SM |
19825 | " in CU at offset %s [in module %s]"), |
19826 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 19827 | if (str_offsets_section->buffer == NULL) |
57d63ce2 | 19828 | error (_("%s used without .debug_str_offsets.dwo section" |
9d8780f0 SM |
19829 | " in CU at offset %s [in module %s]"), |
19830 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 19831 | if (str_index * cu->header.offset_size >= str_offsets_section->size) |
57d63ce2 | 19832 | error (_("%s pointing outside of .debug_str_offsets.dwo" |
9d8780f0 SM |
19833 | " section in CU at offset %s [in module %s]"), |
19834 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 19835 | info_ptr = (str_offsets_section->buffer |
3019eac3 DE |
19836 | + str_index * cu->header.offset_size); |
19837 | if (cu->header.offset_size == 4) | |
19838 | str_offset = bfd_get_32 (abfd, info_ptr); | |
19839 | else | |
19840 | str_offset = bfd_get_64 (abfd, info_ptr); | |
73869dc2 | 19841 | if (str_offset >= str_section->size) |
57d63ce2 | 19842 | error (_("Offset from %s pointing outside of" |
9d8780f0 SM |
19843 | " .debug_str.dwo section in CU at offset %s [in module %s]"), |
19844 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 19845 | return (const char *) (str_section->buffer + str_offset); |
3019eac3 DE |
19846 | } |
19847 | ||
3019eac3 DE |
19848 | /* Return the length of an LEB128 number in BUF. */ |
19849 | ||
19850 | static int | |
19851 | leb128_size (const gdb_byte *buf) | |
19852 | { | |
19853 | const gdb_byte *begin = buf; | |
19854 | gdb_byte byte; | |
19855 | ||
19856 | while (1) | |
19857 | { | |
19858 | byte = *buf++; | |
19859 | if ((byte & 128) == 0) | |
19860 | return buf - begin; | |
19861 | } | |
19862 | } | |
19863 | ||
c906108c | 19864 | static void |
e142c38c | 19865 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
19866 | { |
19867 | switch (lang) | |
19868 | { | |
19869 | case DW_LANG_C89: | |
76bee0cc | 19870 | case DW_LANG_C99: |
0cfd832f | 19871 | case DW_LANG_C11: |
c906108c | 19872 | case DW_LANG_C: |
d1be3247 | 19873 | case DW_LANG_UPC: |
e142c38c | 19874 | cu->language = language_c; |
c906108c | 19875 | break; |
9c37b5ae | 19876 | case DW_LANG_Java: |
c906108c | 19877 | case DW_LANG_C_plus_plus: |
0cfd832f MW |
19878 | case DW_LANG_C_plus_plus_11: |
19879 | case DW_LANG_C_plus_plus_14: | |
e142c38c | 19880 | cu->language = language_cplus; |
c906108c | 19881 | break; |
6aecb9c2 JB |
19882 | case DW_LANG_D: |
19883 | cu->language = language_d; | |
19884 | break; | |
c906108c SS |
19885 | case DW_LANG_Fortran77: |
19886 | case DW_LANG_Fortran90: | |
b21b22e0 | 19887 | case DW_LANG_Fortran95: |
f7de9aab MW |
19888 | case DW_LANG_Fortran03: |
19889 | case DW_LANG_Fortran08: | |
e142c38c | 19890 | cu->language = language_fortran; |
c906108c | 19891 | break; |
a766d390 DE |
19892 | case DW_LANG_Go: |
19893 | cu->language = language_go; | |
19894 | break; | |
c906108c | 19895 | case DW_LANG_Mips_Assembler: |
e142c38c | 19896 | cu->language = language_asm; |
c906108c SS |
19897 | break; |
19898 | case DW_LANG_Ada83: | |
8aaf0b47 | 19899 | case DW_LANG_Ada95: |
bc5f45f8 JB |
19900 | cu->language = language_ada; |
19901 | break; | |
72019c9c GM |
19902 | case DW_LANG_Modula2: |
19903 | cu->language = language_m2; | |
19904 | break; | |
fe8e67fd PM |
19905 | case DW_LANG_Pascal83: |
19906 | cu->language = language_pascal; | |
19907 | break; | |
22566fbd DJ |
19908 | case DW_LANG_ObjC: |
19909 | cu->language = language_objc; | |
19910 | break; | |
c44af4eb TT |
19911 | case DW_LANG_Rust: |
19912 | case DW_LANG_Rust_old: | |
19913 | cu->language = language_rust; | |
19914 | break; | |
c906108c SS |
19915 | case DW_LANG_Cobol74: |
19916 | case DW_LANG_Cobol85: | |
c906108c | 19917 | default: |
e142c38c | 19918 | cu->language = language_minimal; |
c906108c SS |
19919 | break; |
19920 | } | |
e142c38c | 19921 | cu->language_defn = language_def (cu->language); |
c906108c SS |
19922 | } |
19923 | ||
19924 | /* Return the named attribute or NULL if not there. */ | |
19925 | ||
19926 | static struct attribute * | |
e142c38c | 19927 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 19928 | { |
a48e046c | 19929 | for (;;) |
c906108c | 19930 | { |
a48e046c TT |
19931 | unsigned int i; |
19932 | struct attribute *spec = NULL; | |
19933 | ||
19934 | for (i = 0; i < die->num_attrs; ++i) | |
19935 | { | |
19936 | if (die->attrs[i].name == name) | |
19937 | return &die->attrs[i]; | |
19938 | if (die->attrs[i].name == DW_AT_specification | |
19939 | || die->attrs[i].name == DW_AT_abstract_origin) | |
19940 | spec = &die->attrs[i]; | |
19941 | } | |
19942 | ||
19943 | if (!spec) | |
19944 | break; | |
c906108c | 19945 | |
f2f0e013 | 19946 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 19947 | } |
c5aa993b | 19948 | |
c906108c SS |
19949 | return NULL; |
19950 | } | |
19951 | ||
348e048f DE |
19952 | /* Return the named attribute or NULL if not there, |
19953 | but do not follow DW_AT_specification, etc. | |
19954 | This is for use in contexts where we're reading .debug_types dies. | |
19955 | Following DW_AT_specification, DW_AT_abstract_origin will take us | |
19956 | back up the chain, and we want to go down. */ | |
19957 | ||
19958 | static struct attribute * | |
45e58e77 | 19959 | dwarf2_attr_no_follow (struct die_info *die, unsigned int name) |
348e048f DE |
19960 | { |
19961 | unsigned int i; | |
19962 | ||
19963 | for (i = 0; i < die->num_attrs; ++i) | |
19964 | if (die->attrs[i].name == name) | |
19965 | return &die->attrs[i]; | |
19966 | ||
19967 | return NULL; | |
19968 | } | |
19969 | ||
7d45c7c3 KB |
19970 | /* Return the string associated with a string-typed attribute, or NULL if it |
19971 | is either not found or is of an incorrect type. */ | |
19972 | ||
19973 | static const char * | |
19974 | dwarf2_string_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) | |
19975 | { | |
19976 | struct attribute *attr; | |
19977 | const char *str = NULL; | |
19978 | ||
19979 | attr = dwarf2_attr (die, name, cu); | |
19980 | ||
19981 | if (attr != NULL) | |
19982 | { | |
43988095 | 19983 | if (attr->form == DW_FORM_strp || attr->form == DW_FORM_line_strp |
b3340438 L |
19984 | || attr->form == DW_FORM_string |
19985 | || attr->form == DW_FORM_GNU_str_index | |
16eb6b2d | 19986 | || attr->form == DW_FORM_GNU_strp_alt) |
7d45c7c3 KB |
19987 | str = DW_STRING (attr); |
19988 | else | |
b98664d3 | 19989 | complaint (_("string type expected for attribute %s for " |
9d8780f0 SM |
19990 | "DIE at %s in module %s"), |
19991 | dwarf_attr_name (name), sect_offset_str (die->sect_off), | |
518817b3 | 19992 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
7d45c7c3 KB |
19993 | } |
19994 | ||
19995 | return str; | |
19996 | } | |
19997 | ||
05cf31d1 JB |
19998 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
19999 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 20000 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
20001 | |
20002 | static int | |
20003 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
20004 | { | |
20005 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
20006 | ||
20007 | return (attr && DW_UNSND (attr)); | |
20008 | } | |
20009 | ||
3ca72b44 | 20010 | static int |
e142c38c | 20011 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 20012 | { |
05cf31d1 JB |
20013 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
20014 | which value is non-zero. However, we have to be careful with | |
20015 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
20016 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
20017 | end up accidently finding a declaration attribute that belongs | |
20018 | to a different DIE referenced by the specification attribute, | |
20019 | even though the given DIE does not have a declaration attribute. */ | |
20020 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
20021 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
20022 | } |
20023 | ||
63d06c5c | 20024 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 20025 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
20026 | containing the return value on output. If there is no |
20027 | specification, but there is an abstract origin, that is | |
20028 | returned. */ | |
63d06c5c DC |
20029 | |
20030 | static struct die_info * | |
f2f0e013 | 20031 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 20032 | { |
f2f0e013 DJ |
20033 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
20034 | *spec_cu); | |
63d06c5c | 20035 | |
edb3359d DJ |
20036 | if (spec_attr == NULL) |
20037 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
20038 | ||
63d06c5c DC |
20039 | if (spec_attr == NULL) |
20040 | return NULL; | |
20041 | else | |
f2f0e013 | 20042 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 20043 | } |
c906108c | 20044 | |
527f3840 JK |
20045 | /* Stub for free_line_header to match void * callback types. */ |
20046 | ||
20047 | static void | |
20048 | free_line_header_voidp (void *arg) | |
20049 | { | |
9a3c8263 | 20050 | struct line_header *lh = (struct line_header *) arg; |
527f3840 | 20051 | |
fff8551c | 20052 | delete lh; |
527f3840 JK |
20053 | } |
20054 | ||
fff8551c PA |
20055 | void |
20056 | line_header::add_include_dir (const char *include_dir) | |
c906108c | 20057 | { |
27e0867f | 20058 | if (dwarf_line_debug >= 2) |
fff8551c PA |
20059 | fprintf_unfiltered (gdb_stdlog, "Adding dir %zu: %s\n", |
20060 | include_dirs.size () + 1, include_dir); | |
27e0867f | 20061 | |
fff8551c | 20062 | include_dirs.push_back (include_dir); |
debd256d | 20063 | } |
6e70227d | 20064 | |
fff8551c PA |
20065 | void |
20066 | line_header::add_file_name (const char *name, | |
ecfb656c | 20067 | dir_index d_index, |
fff8551c PA |
20068 | unsigned int mod_time, |
20069 | unsigned int length) | |
debd256d | 20070 | { |
27e0867f DE |
20071 | if (dwarf_line_debug >= 2) |
20072 | fprintf_unfiltered (gdb_stdlog, "Adding file %u: %s\n", | |
fff8551c | 20073 | (unsigned) file_names.size () + 1, name); |
27e0867f | 20074 | |
ecfb656c | 20075 | file_names.emplace_back (name, d_index, mod_time, length); |
debd256d | 20076 | } |
6e70227d | 20077 | |
83769d0b | 20078 | /* A convenience function to find the proper .debug_line section for a CU. */ |
36586728 TT |
20079 | |
20080 | static struct dwarf2_section_info * | |
20081 | get_debug_line_section (struct dwarf2_cu *cu) | |
20082 | { | |
20083 | struct dwarf2_section_info *section; | |
518817b3 SM |
20084 | struct dwarf2_per_objfile *dwarf2_per_objfile |
20085 | = cu->per_cu->dwarf2_per_objfile; | |
36586728 TT |
20086 | |
20087 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
20088 | DWO file. */ | |
20089 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
20090 | section = &cu->dwo_unit->dwo_file->sections.line; | |
20091 | else if (cu->per_cu->is_dwz) | |
20092 | { | |
ed2dc618 | 20093 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
36586728 TT |
20094 | |
20095 | section = &dwz->line; | |
20096 | } | |
20097 | else | |
20098 | section = &dwarf2_per_objfile->line; | |
20099 | ||
20100 | return section; | |
20101 | } | |
20102 | ||
43988095 JK |
20103 | /* Read directory or file name entry format, starting with byte of |
20104 | format count entries, ULEB128 pairs of entry formats, ULEB128 of | |
20105 | entries count and the entries themselves in the described entry | |
20106 | format. */ | |
20107 | ||
20108 | static void | |
ed2dc618 SM |
20109 | read_formatted_entries (struct dwarf2_per_objfile *dwarf2_per_objfile, |
20110 | bfd *abfd, const gdb_byte **bufp, | |
43988095 JK |
20111 | struct line_header *lh, |
20112 | const struct comp_unit_head *cu_header, | |
20113 | void (*callback) (struct line_header *lh, | |
20114 | const char *name, | |
ecfb656c | 20115 | dir_index d_index, |
43988095 JK |
20116 | unsigned int mod_time, |
20117 | unsigned int length)) | |
20118 | { | |
20119 | gdb_byte format_count, formati; | |
20120 | ULONGEST data_count, datai; | |
20121 | const gdb_byte *buf = *bufp; | |
20122 | const gdb_byte *format_header_data; | |
43988095 JK |
20123 | unsigned int bytes_read; |
20124 | ||
20125 | format_count = read_1_byte (abfd, buf); | |
20126 | buf += 1; | |
20127 | format_header_data = buf; | |
20128 | for (formati = 0; formati < format_count; formati++) | |
20129 | { | |
20130 | read_unsigned_leb128 (abfd, buf, &bytes_read); | |
20131 | buf += bytes_read; | |
20132 | read_unsigned_leb128 (abfd, buf, &bytes_read); | |
20133 | buf += bytes_read; | |
20134 | } | |
20135 | ||
20136 | data_count = read_unsigned_leb128 (abfd, buf, &bytes_read); | |
20137 | buf += bytes_read; | |
20138 | for (datai = 0; datai < data_count; datai++) | |
20139 | { | |
20140 | const gdb_byte *format = format_header_data; | |
20141 | struct file_entry fe; | |
20142 | ||
43988095 JK |
20143 | for (formati = 0; formati < format_count; formati++) |
20144 | { | |
ecfb656c | 20145 | ULONGEST content_type = read_unsigned_leb128 (abfd, format, &bytes_read); |
43988095 | 20146 | format += bytes_read; |
43988095 | 20147 | |
ecfb656c | 20148 | ULONGEST form = read_unsigned_leb128 (abfd, format, &bytes_read); |
43988095 | 20149 | format += bytes_read; |
ecfb656c PA |
20150 | |
20151 | gdb::optional<const char *> string; | |
20152 | gdb::optional<unsigned int> uint; | |
20153 | ||
43988095 JK |
20154 | switch (form) |
20155 | { | |
20156 | case DW_FORM_string: | |
ecfb656c | 20157 | string.emplace (read_direct_string (abfd, buf, &bytes_read)); |
43988095 JK |
20158 | buf += bytes_read; |
20159 | break; | |
20160 | ||
20161 | case DW_FORM_line_strp: | |
ed2dc618 SM |
20162 | string.emplace (read_indirect_line_string (dwarf2_per_objfile, |
20163 | abfd, buf, | |
ecfb656c PA |
20164 | cu_header, |
20165 | &bytes_read)); | |
43988095 JK |
20166 | buf += bytes_read; |
20167 | break; | |
20168 | ||
20169 | case DW_FORM_data1: | |
ecfb656c | 20170 | uint.emplace (read_1_byte (abfd, buf)); |
43988095 JK |
20171 | buf += 1; |
20172 | break; | |
20173 | ||
20174 | case DW_FORM_data2: | |
ecfb656c | 20175 | uint.emplace (read_2_bytes (abfd, buf)); |
43988095 JK |
20176 | buf += 2; |
20177 | break; | |
20178 | ||
20179 | case DW_FORM_data4: | |
ecfb656c | 20180 | uint.emplace (read_4_bytes (abfd, buf)); |
43988095 JK |
20181 | buf += 4; |
20182 | break; | |
20183 | ||
20184 | case DW_FORM_data8: | |
ecfb656c | 20185 | uint.emplace (read_8_bytes (abfd, buf)); |
43988095 JK |
20186 | buf += 8; |
20187 | break; | |
20188 | ||
20189 | case DW_FORM_udata: | |
ecfb656c | 20190 | uint.emplace (read_unsigned_leb128 (abfd, buf, &bytes_read)); |
43988095 JK |
20191 | buf += bytes_read; |
20192 | break; | |
20193 | ||
20194 | case DW_FORM_block: | |
20195 | /* It is valid only for DW_LNCT_timestamp which is ignored by | |
20196 | current GDB. */ | |
20197 | break; | |
20198 | } | |
ecfb656c PA |
20199 | |
20200 | switch (content_type) | |
20201 | { | |
20202 | case DW_LNCT_path: | |
20203 | if (string.has_value ()) | |
20204 | fe.name = *string; | |
20205 | break; | |
20206 | case DW_LNCT_directory_index: | |
20207 | if (uint.has_value ()) | |
20208 | fe.d_index = (dir_index) *uint; | |
20209 | break; | |
20210 | case DW_LNCT_timestamp: | |
20211 | if (uint.has_value ()) | |
20212 | fe.mod_time = *uint; | |
20213 | break; | |
20214 | case DW_LNCT_size: | |
20215 | if (uint.has_value ()) | |
20216 | fe.length = *uint; | |
20217 | break; | |
20218 | case DW_LNCT_MD5: | |
20219 | break; | |
20220 | default: | |
b98664d3 | 20221 | complaint (_("Unknown format content type %s"), |
ecfb656c PA |
20222 | pulongest (content_type)); |
20223 | } | |
43988095 JK |
20224 | } |
20225 | ||
ecfb656c | 20226 | callback (lh, fe.name, fe.d_index, fe.mod_time, fe.length); |
43988095 JK |
20227 | } |
20228 | ||
20229 | *bufp = buf; | |
20230 | } | |
20231 | ||
debd256d | 20232 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 20233 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 20234 | to a struct line_header, allocated using xmalloc. |
cd366ee8 DE |
20235 | Returns NULL if there is a problem reading the header, e.g., if it |
20236 | has a version we don't understand. | |
debd256d JB |
20237 | |
20238 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
20239 | the returned object point into the dwarf line section buffer, |
20240 | and must not be freed. */ | |
ae2de4f8 | 20241 | |
fff8551c | 20242 | static line_header_up |
9c541725 | 20243 | dwarf_decode_line_header (sect_offset sect_off, struct dwarf2_cu *cu) |
debd256d | 20244 | { |
d521ce57 | 20245 | const gdb_byte *line_ptr; |
c764a876 | 20246 | unsigned int bytes_read, offset_size; |
debd256d | 20247 | int i; |
d521ce57 | 20248 | const char *cur_dir, *cur_file; |
3019eac3 DE |
20249 | struct dwarf2_section_info *section; |
20250 | bfd *abfd; | |
518817b3 SM |
20251 | struct dwarf2_per_objfile *dwarf2_per_objfile |
20252 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 | 20253 | |
36586728 | 20254 | section = get_debug_line_section (cu); |
3019eac3 DE |
20255 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); |
20256 | if (section->buffer == NULL) | |
debd256d | 20257 | { |
3019eac3 | 20258 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
b98664d3 | 20259 | complaint (_("missing .debug_line.dwo section")); |
3019eac3 | 20260 | else |
b98664d3 | 20261 | complaint (_("missing .debug_line section")); |
debd256d JB |
20262 | return 0; |
20263 | } | |
20264 | ||
fceca515 DE |
20265 | /* We can't do this until we know the section is non-empty. |
20266 | Only then do we know we have such a section. */ | |
a32a8923 | 20267 | abfd = get_section_bfd_owner (section); |
fceca515 | 20268 | |
a738430d MK |
20269 | /* Make sure that at least there's room for the total_length field. |
20270 | That could be 12 bytes long, but we're just going to fudge that. */ | |
9c541725 | 20271 | if (to_underlying (sect_off) + 4 >= section->size) |
debd256d | 20272 | { |
4d3c2250 | 20273 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
20274 | return 0; |
20275 | } | |
20276 | ||
fff8551c | 20277 | line_header_up lh (new line_header ()); |
debd256d | 20278 | |
9c541725 | 20279 | lh->sect_off = sect_off; |
527f3840 JK |
20280 | lh->offset_in_dwz = cu->per_cu->is_dwz; |
20281 | ||
9c541725 | 20282 | line_ptr = section->buffer + to_underlying (sect_off); |
debd256d | 20283 | |
a738430d | 20284 | /* Read in the header. */ |
6e70227d | 20285 | lh->total_length = |
c764a876 DE |
20286 | read_checked_initial_length_and_offset (abfd, line_ptr, &cu->header, |
20287 | &bytes_read, &offset_size); | |
debd256d | 20288 | line_ptr += bytes_read; |
3019eac3 | 20289 | if (line_ptr + lh->total_length > (section->buffer + section->size)) |
debd256d | 20290 | { |
4d3c2250 | 20291 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
20292 | return 0; |
20293 | } | |
20294 | lh->statement_program_end = line_ptr + lh->total_length; | |
20295 | lh->version = read_2_bytes (abfd, line_ptr); | |
20296 | line_ptr += 2; | |
43988095 | 20297 | if (lh->version > 5) |
cd366ee8 DE |
20298 | { |
20299 | /* This is a version we don't understand. The format could have | |
20300 | changed in ways we don't handle properly so just punt. */ | |
b98664d3 | 20301 | complaint (_("unsupported version in .debug_line section")); |
cd366ee8 DE |
20302 | return NULL; |
20303 | } | |
43988095 JK |
20304 | if (lh->version >= 5) |
20305 | { | |
20306 | gdb_byte segment_selector_size; | |
20307 | ||
20308 | /* Skip address size. */ | |
20309 | read_1_byte (abfd, line_ptr); | |
20310 | line_ptr += 1; | |
20311 | ||
20312 | segment_selector_size = read_1_byte (abfd, line_ptr); | |
20313 | line_ptr += 1; | |
20314 | if (segment_selector_size != 0) | |
20315 | { | |
b98664d3 | 20316 | complaint (_("unsupported segment selector size %u " |
43988095 JK |
20317 | "in .debug_line section"), |
20318 | segment_selector_size); | |
20319 | return NULL; | |
20320 | } | |
20321 | } | |
c764a876 DE |
20322 | lh->header_length = read_offset_1 (abfd, line_ptr, offset_size); |
20323 | line_ptr += offset_size; | |
debd256d JB |
20324 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); |
20325 | line_ptr += 1; | |
2dc7f7b3 TT |
20326 | if (lh->version >= 4) |
20327 | { | |
20328 | lh->maximum_ops_per_instruction = read_1_byte (abfd, line_ptr); | |
20329 | line_ptr += 1; | |
20330 | } | |
20331 | else | |
20332 | lh->maximum_ops_per_instruction = 1; | |
20333 | ||
20334 | if (lh->maximum_ops_per_instruction == 0) | |
20335 | { | |
20336 | lh->maximum_ops_per_instruction = 1; | |
b98664d3 | 20337 | complaint (_("invalid maximum_ops_per_instruction " |
3e43a32a | 20338 | "in `.debug_line' section")); |
2dc7f7b3 TT |
20339 | } |
20340 | ||
debd256d JB |
20341 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); |
20342 | line_ptr += 1; | |
20343 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
20344 | line_ptr += 1; | |
20345 | lh->line_range = read_1_byte (abfd, line_ptr); | |
20346 | line_ptr += 1; | |
20347 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
20348 | line_ptr += 1; | |
fff8551c | 20349 | lh->standard_opcode_lengths.reset (new unsigned char[lh->opcode_base]); |
debd256d JB |
20350 | |
20351 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
20352 | for (i = 1; i < lh->opcode_base; ++i) | |
20353 | { | |
20354 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
20355 | line_ptr += 1; | |
20356 | } | |
20357 | ||
43988095 | 20358 | if (lh->version >= 5) |
debd256d | 20359 | { |
43988095 | 20360 | /* Read directory table. */ |
ed2dc618 SM |
20361 | read_formatted_entries (dwarf2_per_objfile, abfd, &line_ptr, lh.get (), |
20362 | &cu->header, | |
b926417a | 20363 | [] (struct line_header *header, const char *name, |
ecfb656c | 20364 | dir_index d_index, unsigned int mod_time, |
fff8551c PA |
20365 | unsigned int length) |
20366 | { | |
b926417a | 20367 | header->add_include_dir (name); |
fff8551c | 20368 | }); |
debd256d | 20369 | |
43988095 | 20370 | /* Read file name table. */ |
ed2dc618 SM |
20371 | read_formatted_entries (dwarf2_per_objfile, abfd, &line_ptr, lh.get (), |
20372 | &cu->header, | |
b926417a | 20373 | [] (struct line_header *header, const char *name, |
ecfb656c | 20374 | dir_index d_index, unsigned int mod_time, |
fff8551c PA |
20375 | unsigned int length) |
20376 | { | |
b926417a | 20377 | header->add_file_name (name, d_index, mod_time, length); |
fff8551c | 20378 | }); |
43988095 JK |
20379 | } |
20380 | else | |
debd256d | 20381 | { |
43988095 JK |
20382 | /* Read directory table. */ |
20383 | while ((cur_dir = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) | |
20384 | { | |
20385 | line_ptr += bytes_read; | |
fff8551c | 20386 | lh->add_include_dir (cur_dir); |
43988095 | 20387 | } |
debd256d JB |
20388 | line_ptr += bytes_read; |
20389 | ||
43988095 JK |
20390 | /* Read file name table. */ |
20391 | while ((cur_file = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) | |
20392 | { | |
ecfb656c PA |
20393 | unsigned int mod_time, length; |
20394 | dir_index d_index; | |
43988095 JK |
20395 | |
20396 | line_ptr += bytes_read; | |
ecfb656c | 20397 | d_index = (dir_index) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
43988095 JK |
20398 | line_ptr += bytes_read; |
20399 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20400 | line_ptr += bytes_read; | |
20401 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20402 | line_ptr += bytes_read; | |
20403 | ||
ecfb656c | 20404 | lh->add_file_name (cur_file, d_index, mod_time, length); |
43988095 JK |
20405 | } |
20406 | line_ptr += bytes_read; | |
debd256d | 20407 | } |
6e70227d | 20408 | lh->statement_program_start = line_ptr; |
debd256d | 20409 | |
3019eac3 | 20410 | if (line_ptr > (section->buffer + section->size)) |
b98664d3 | 20411 | complaint (_("line number info header doesn't " |
3e43a32a | 20412 | "fit in `.debug_line' section")); |
debd256d | 20413 | |
debd256d JB |
20414 | return lh; |
20415 | } | |
c906108c | 20416 | |
c6da4cef DE |
20417 | /* Subroutine of dwarf_decode_lines to simplify it. |
20418 | Return the file name of the psymtab for included file FILE_INDEX | |
20419 | in line header LH of PST. | |
20420 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
c89b44cd TT |
20421 | If space for the result is malloc'd, *NAME_HOLDER will be set. |
20422 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. */ | |
c6da4cef | 20423 | |
d521ce57 | 20424 | static const char * |
c6da4cef DE |
20425 | psymtab_include_file_name (const struct line_header *lh, int file_index, |
20426 | const struct partial_symtab *pst, | |
c89b44cd TT |
20427 | const char *comp_dir, |
20428 | gdb::unique_xmalloc_ptr<char> *name_holder) | |
c6da4cef | 20429 | { |
8c43009f | 20430 | const file_entry &fe = lh->file_names[file_index]; |
d521ce57 TT |
20431 | const char *include_name = fe.name; |
20432 | const char *include_name_to_compare = include_name; | |
72b9f47f | 20433 | const char *pst_filename; |
c6da4cef DE |
20434 | int file_is_pst; |
20435 | ||
8c43009f | 20436 | const char *dir_name = fe.include_dir (lh); |
c6da4cef | 20437 | |
c89b44cd | 20438 | gdb::unique_xmalloc_ptr<char> hold_compare; |
c6da4cef DE |
20439 | if (!IS_ABSOLUTE_PATH (include_name) |
20440 | && (dir_name != NULL || comp_dir != NULL)) | |
20441 | { | |
20442 | /* Avoid creating a duplicate psymtab for PST. | |
20443 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
20444 | Before we do the comparison, however, we need to account | |
20445 | for DIR_NAME and COMP_DIR. | |
20446 | First prepend dir_name (if non-NULL). If we still don't | |
20447 | have an absolute path prepend comp_dir (if non-NULL). | |
20448 | However, the directory we record in the include-file's | |
20449 | psymtab does not contain COMP_DIR (to match the | |
20450 | corresponding symtab(s)). | |
20451 | ||
20452 | Example: | |
20453 | ||
20454 | bash$ cd /tmp | |
20455 | bash$ gcc -g ./hello.c | |
20456 | include_name = "hello.c" | |
20457 | dir_name = "." | |
20458 | DW_AT_comp_dir = comp_dir = "/tmp" | |
5f52445b YQ |
20459 | DW_AT_name = "./hello.c" |
20460 | ||
20461 | */ | |
c6da4cef DE |
20462 | |
20463 | if (dir_name != NULL) | |
20464 | { | |
c89b44cd TT |
20465 | name_holder->reset (concat (dir_name, SLASH_STRING, |
20466 | include_name, (char *) NULL)); | |
20467 | include_name = name_holder->get (); | |
c6da4cef | 20468 | include_name_to_compare = include_name; |
c6da4cef DE |
20469 | } |
20470 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
20471 | { | |
c89b44cd TT |
20472 | hold_compare.reset (concat (comp_dir, SLASH_STRING, |
20473 | include_name, (char *) NULL)); | |
20474 | include_name_to_compare = hold_compare.get (); | |
c6da4cef DE |
20475 | } |
20476 | } | |
20477 | ||
20478 | pst_filename = pst->filename; | |
c89b44cd | 20479 | gdb::unique_xmalloc_ptr<char> copied_name; |
c6da4cef DE |
20480 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) |
20481 | { | |
c89b44cd TT |
20482 | copied_name.reset (concat (pst->dirname, SLASH_STRING, |
20483 | pst_filename, (char *) NULL)); | |
20484 | pst_filename = copied_name.get (); | |
c6da4cef DE |
20485 | } |
20486 | ||
1e3fad37 | 20487 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef | 20488 | |
c6da4cef DE |
20489 | if (file_is_pst) |
20490 | return NULL; | |
20491 | return include_name; | |
20492 | } | |
20493 | ||
d9b3de22 DE |
20494 | /* State machine to track the state of the line number program. */ |
20495 | ||
6f77053d | 20496 | class lnp_state_machine |
d9b3de22 | 20497 | { |
6f77053d PA |
20498 | public: |
20499 | /* Initialize a machine state for the start of a line number | |
20500 | program. */ | |
804d2729 TT |
20501 | lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, line_header *lh, |
20502 | bool record_lines_p); | |
6f77053d | 20503 | |
8c43009f PA |
20504 | file_entry *current_file () |
20505 | { | |
20506 | /* lh->file_names is 0-based, but the file name numbers in the | |
20507 | statement program are 1-based. */ | |
6f77053d PA |
20508 | return m_line_header->file_name_at (m_file); |
20509 | } | |
20510 | ||
20511 | /* Record the line in the state machine. END_SEQUENCE is true if | |
20512 | we're processing the end of a sequence. */ | |
20513 | void record_line (bool end_sequence); | |
20514 | ||
7ab6656f OJ |
20515 | /* Check ADDRESS is zero and less than UNRELOCATED_LOWPC and if true |
20516 | nop-out rest of the lines in this sequence. */ | |
6f77053d PA |
20517 | void check_line_address (struct dwarf2_cu *cu, |
20518 | const gdb_byte *line_ptr, | |
7ab6656f | 20519 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address); |
6f77053d PA |
20520 | |
20521 | void handle_set_discriminator (unsigned int discriminator) | |
20522 | { | |
20523 | m_discriminator = discriminator; | |
20524 | m_line_has_non_zero_discriminator |= discriminator != 0; | |
20525 | } | |
20526 | ||
20527 | /* Handle DW_LNE_set_address. */ | |
20528 | void handle_set_address (CORE_ADDR baseaddr, CORE_ADDR address) | |
20529 | { | |
20530 | m_op_index = 0; | |
20531 | address += baseaddr; | |
20532 | m_address = gdbarch_adjust_dwarf2_line (m_gdbarch, address, false); | |
20533 | } | |
20534 | ||
20535 | /* Handle DW_LNS_advance_pc. */ | |
20536 | void handle_advance_pc (CORE_ADDR adjust); | |
20537 | ||
20538 | /* Handle a special opcode. */ | |
20539 | void handle_special_opcode (unsigned char op_code); | |
20540 | ||
20541 | /* Handle DW_LNS_advance_line. */ | |
20542 | void handle_advance_line (int line_delta) | |
20543 | { | |
20544 | advance_line (line_delta); | |
20545 | } | |
20546 | ||
20547 | /* Handle DW_LNS_set_file. */ | |
20548 | void handle_set_file (file_name_index file); | |
20549 | ||
20550 | /* Handle DW_LNS_negate_stmt. */ | |
20551 | void handle_negate_stmt () | |
20552 | { | |
20553 | m_is_stmt = !m_is_stmt; | |
20554 | } | |
20555 | ||
20556 | /* Handle DW_LNS_const_add_pc. */ | |
20557 | void handle_const_add_pc (); | |
20558 | ||
20559 | /* Handle DW_LNS_fixed_advance_pc. */ | |
20560 | void handle_fixed_advance_pc (CORE_ADDR addr_adj) | |
20561 | { | |
20562 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20563 | m_op_index = 0; | |
20564 | } | |
20565 | ||
20566 | /* Handle DW_LNS_copy. */ | |
20567 | void handle_copy () | |
20568 | { | |
20569 | record_line (false); | |
20570 | m_discriminator = 0; | |
20571 | } | |
20572 | ||
20573 | /* Handle DW_LNE_end_sequence. */ | |
20574 | void handle_end_sequence () | |
20575 | { | |
804d2729 | 20576 | m_currently_recording_lines = true; |
6f77053d PA |
20577 | } |
20578 | ||
20579 | private: | |
20580 | /* Advance the line by LINE_DELTA. */ | |
20581 | void advance_line (int line_delta) | |
20582 | { | |
20583 | m_line += line_delta; | |
20584 | ||
20585 | if (line_delta != 0) | |
20586 | m_line_has_non_zero_discriminator = m_discriminator != 0; | |
8c43009f PA |
20587 | } |
20588 | ||
804d2729 TT |
20589 | struct dwarf2_cu *m_cu; |
20590 | ||
6f77053d PA |
20591 | gdbarch *m_gdbarch; |
20592 | ||
20593 | /* True if we're recording lines. | |
20594 | Otherwise we're building partial symtabs and are just interested in | |
20595 | finding include files mentioned by the line number program. */ | |
20596 | bool m_record_lines_p; | |
20597 | ||
8c43009f | 20598 | /* The line number header. */ |
6f77053d | 20599 | line_header *m_line_header; |
8c43009f | 20600 | |
6f77053d PA |
20601 | /* These are part of the standard DWARF line number state machine, |
20602 | and initialized according to the DWARF spec. */ | |
d9b3de22 | 20603 | |
6f77053d | 20604 | unsigned char m_op_index = 0; |
8c43009f | 20605 | /* The line table index (1-based) of the current file. */ |
6f77053d PA |
20606 | file_name_index m_file = (file_name_index) 1; |
20607 | unsigned int m_line = 1; | |
20608 | ||
20609 | /* These are initialized in the constructor. */ | |
20610 | ||
20611 | CORE_ADDR m_address; | |
20612 | bool m_is_stmt; | |
20613 | unsigned int m_discriminator; | |
d9b3de22 DE |
20614 | |
20615 | /* Additional bits of state we need to track. */ | |
20616 | ||
20617 | /* The last file that we called dwarf2_start_subfile for. | |
20618 | This is only used for TLLs. */ | |
6f77053d | 20619 | unsigned int m_last_file = 0; |
d9b3de22 | 20620 | /* The last file a line number was recorded for. */ |
6f77053d | 20621 | struct subfile *m_last_subfile = NULL; |
d9b3de22 | 20622 | |
804d2729 TT |
20623 | /* When true, record the lines we decode. */ |
20624 | bool m_currently_recording_lines = false; | |
d9b3de22 DE |
20625 | |
20626 | /* The last line number that was recorded, used to coalesce | |
20627 | consecutive entries for the same line. This can happen, for | |
20628 | example, when discriminators are present. PR 17276. */ | |
6f77053d PA |
20629 | unsigned int m_last_line = 0; |
20630 | bool m_line_has_non_zero_discriminator = false; | |
8c43009f | 20631 | }; |
d9b3de22 | 20632 | |
6f77053d PA |
20633 | void |
20634 | lnp_state_machine::handle_advance_pc (CORE_ADDR adjust) | |
20635 | { | |
20636 | CORE_ADDR addr_adj = (((m_op_index + adjust) | |
20637 | / m_line_header->maximum_ops_per_instruction) | |
20638 | * m_line_header->minimum_instruction_length); | |
20639 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20640 | m_op_index = ((m_op_index + adjust) | |
20641 | % m_line_header->maximum_ops_per_instruction); | |
20642 | } | |
d9b3de22 | 20643 | |
6f77053d PA |
20644 | void |
20645 | lnp_state_machine::handle_special_opcode (unsigned char op_code) | |
d9b3de22 | 20646 | { |
6f77053d PA |
20647 | unsigned char adj_opcode = op_code - m_line_header->opcode_base; |
20648 | CORE_ADDR addr_adj = (((m_op_index | |
20649 | + (adj_opcode / m_line_header->line_range)) | |
20650 | / m_line_header->maximum_ops_per_instruction) | |
20651 | * m_line_header->minimum_instruction_length); | |
20652 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20653 | m_op_index = ((m_op_index + (adj_opcode / m_line_header->line_range)) | |
20654 | % m_line_header->maximum_ops_per_instruction); | |
d9b3de22 | 20655 | |
6f77053d PA |
20656 | int line_delta = (m_line_header->line_base |
20657 | + (adj_opcode % m_line_header->line_range)); | |
20658 | advance_line (line_delta); | |
20659 | record_line (false); | |
20660 | m_discriminator = 0; | |
20661 | } | |
d9b3de22 | 20662 | |
6f77053d PA |
20663 | void |
20664 | lnp_state_machine::handle_set_file (file_name_index file) | |
20665 | { | |
20666 | m_file = file; | |
20667 | ||
20668 | const file_entry *fe = current_file (); | |
20669 | if (fe == NULL) | |
20670 | dwarf2_debug_line_missing_file_complaint (); | |
20671 | else if (m_record_lines_p) | |
20672 | { | |
20673 | const char *dir = fe->include_dir (m_line_header); | |
20674 | ||
804d2729 | 20675 | m_last_subfile = m_cu->builder->get_current_subfile (); |
6f77053d | 20676 | m_line_has_non_zero_discriminator = m_discriminator != 0; |
804d2729 | 20677 | dwarf2_start_subfile (m_cu, fe->name, dir); |
6f77053d PA |
20678 | } |
20679 | } | |
20680 | ||
20681 | void | |
20682 | lnp_state_machine::handle_const_add_pc () | |
20683 | { | |
20684 | CORE_ADDR adjust | |
20685 | = (255 - m_line_header->opcode_base) / m_line_header->line_range; | |
20686 | ||
20687 | CORE_ADDR addr_adj | |
20688 | = (((m_op_index + adjust) | |
20689 | / m_line_header->maximum_ops_per_instruction) | |
20690 | * m_line_header->minimum_instruction_length); | |
20691 | ||
20692 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20693 | m_op_index = ((m_op_index + adjust) | |
20694 | % m_line_header->maximum_ops_per_instruction); | |
20695 | } | |
d9b3de22 | 20696 | |
a05a36a5 DE |
20697 | /* Return non-zero if we should add LINE to the line number table. |
20698 | LINE is the line to add, LAST_LINE is the last line that was added, | |
20699 | LAST_SUBFILE is the subfile for LAST_LINE. | |
20700 | LINE_HAS_NON_ZERO_DISCRIMINATOR is non-zero if LINE has ever | |
20701 | had a non-zero discriminator. | |
20702 | ||
20703 | We have to be careful in the presence of discriminators. | |
20704 | E.g., for this line: | |
20705 | ||
20706 | for (i = 0; i < 100000; i++); | |
20707 | ||
20708 | clang can emit four line number entries for that one line, | |
20709 | each with a different discriminator. | |
20710 | See gdb.dwarf2/dw2-single-line-discriminators.exp for an example. | |
20711 | ||
20712 | However, we want gdb to coalesce all four entries into one. | |
20713 | Otherwise the user could stepi into the middle of the line and | |
20714 | gdb would get confused about whether the pc really was in the | |
20715 | middle of the line. | |
20716 | ||
20717 | Things are further complicated by the fact that two consecutive | |
20718 | line number entries for the same line is a heuristic used by gcc | |
20719 | to denote the end of the prologue. So we can't just discard duplicate | |
20720 | entries, we have to be selective about it. The heuristic we use is | |
20721 | that we only collapse consecutive entries for the same line if at least | |
20722 | one of those entries has a non-zero discriminator. PR 17276. | |
20723 | ||
20724 | Note: Addresses in the line number state machine can never go backwards | |
20725 | within one sequence, thus this coalescing is ok. */ | |
20726 | ||
20727 | static int | |
804d2729 TT |
20728 | dwarf_record_line_p (struct dwarf2_cu *cu, |
20729 | unsigned int line, unsigned int last_line, | |
a05a36a5 DE |
20730 | int line_has_non_zero_discriminator, |
20731 | struct subfile *last_subfile) | |
20732 | { | |
804d2729 | 20733 | if (cu->builder->get_current_subfile () != last_subfile) |
a05a36a5 DE |
20734 | return 1; |
20735 | if (line != last_line) | |
20736 | return 1; | |
20737 | /* Same line for the same file that we've seen already. | |
20738 | As a last check, for pr 17276, only record the line if the line | |
20739 | has never had a non-zero discriminator. */ | |
20740 | if (!line_has_non_zero_discriminator) | |
20741 | return 1; | |
20742 | return 0; | |
20743 | } | |
20744 | ||
804d2729 TT |
20745 | /* Use the CU's builder to record line number LINE beginning at |
20746 | address ADDRESS in the line table of subfile SUBFILE. */ | |
252a6764 DE |
20747 | |
20748 | static void | |
d9b3de22 DE |
20749 | dwarf_record_line_1 (struct gdbarch *gdbarch, struct subfile *subfile, |
20750 | unsigned int line, CORE_ADDR address, | |
804d2729 | 20751 | struct dwarf2_cu *cu) |
252a6764 DE |
20752 | { |
20753 | CORE_ADDR addr = gdbarch_addr_bits_remove (gdbarch, address); | |
20754 | ||
27e0867f DE |
20755 | if (dwarf_line_debug) |
20756 | { | |
20757 | fprintf_unfiltered (gdb_stdlog, | |
20758 | "Recording line %u, file %s, address %s\n", | |
20759 | line, lbasename (subfile->name), | |
20760 | paddress (gdbarch, address)); | |
20761 | } | |
20762 | ||
804d2729 TT |
20763 | if (cu != nullptr) |
20764 | cu->builder->record_line (subfile, line, addr); | |
252a6764 DE |
20765 | } |
20766 | ||
20767 | /* Subroutine of dwarf_decode_lines_1 to simplify it. | |
20768 | Mark the end of a set of line number records. | |
d9b3de22 | 20769 | The arguments are the same as for dwarf_record_line_1. |
252a6764 DE |
20770 | If SUBFILE is NULL the request is ignored. */ |
20771 | ||
20772 | static void | |
20773 | dwarf_finish_line (struct gdbarch *gdbarch, struct subfile *subfile, | |
804d2729 | 20774 | CORE_ADDR address, struct dwarf2_cu *cu) |
252a6764 | 20775 | { |
27e0867f DE |
20776 | if (subfile == NULL) |
20777 | return; | |
20778 | ||
20779 | if (dwarf_line_debug) | |
20780 | { | |
20781 | fprintf_unfiltered (gdb_stdlog, | |
20782 | "Finishing current line, file %s, address %s\n", | |
20783 | lbasename (subfile->name), | |
20784 | paddress (gdbarch, address)); | |
20785 | } | |
20786 | ||
804d2729 | 20787 | dwarf_record_line_1 (gdbarch, subfile, 0, address, cu); |
d9b3de22 DE |
20788 | } |
20789 | ||
6f77053d PA |
20790 | void |
20791 | lnp_state_machine::record_line (bool end_sequence) | |
d9b3de22 | 20792 | { |
d9b3de22 DE |
20793 | if (dwarf_line_debug) |
20794 | { | |
20795 | fprintf_unfiltered (gdb_stdlog, | |
20796 | "Processing actual line %u: file %u," | |
20797 | " address %s, is_stmt %u, discrim %u\n", | |
6f77053d PA |
20798 | m_line, to_underlying (m_file), |
20799 | paddress (m_gdbarch, m_address), | |
20800 | m_is_stmt, m_discriminator); | |
d9b3de22 DE |
20801 | } |
20802 | ||
6f77053d | 20803 | file_entry *fe = current_file (); |
8c43009f PA |
20804 | |
20805 | if (fe == NULL) | |
d9b3de22 DE |
20806 | dwarf2_debug_line_missing_file_complaint (); |
20807 | /* For now we ignore lines not starting on an instruction boundary. | |
20808 | But not when processing end_sequence for compatibility with the | |
20809 | previous version of the code. */ | |
6f77053d | 20810 | else if (m_op_index == 0 || end_sequence) |
d9b3de22 | 20811 | { |
8c43009f | 20812 | fe->included_p = 1; |
c258c396 | 20813 | if (m_record_lines_p && (producer_is_codewarrior (m_cu) || m_is_stmt)) |
d9b3de22 | 20814 | { |
804d2729 TT |
20815 | if (m_last_subfile != m_cu->builder->get_current_subfile () |
20816 | || end_sequence) | |
d9b3de22 | 20817 | { |
804d2729 TT |
20818 | dwarf_finish_line (m_gdbarch, m_last_subfile, m_address, |
20819 | m_currently_recording_lines ? m_cu : nullptr); | |
d9b3de22 DE |
20820 | } |
20821 | ||
20822 | if (!end_sequence) | |
20823 | { | |
804d2729 | 20824 | if (dwarf_record_line_p (m_cu, m_line, m_last_line, |
6f77053d PA |
20825 | m_line_has_non_zero_discriminator, |
20826 | m_last_subfile)) | |
d9b3de22 | 20827 | { |
804d2729 TT |
20828 | dwarf_record_line_1 (m_gdbarch, |
20829 | m_cu->builder->get_current_subfile (), | |
6f77053d | 20830 | m_line, m_address, |
804d2729 | 20831 | m_currently_recording_lines ? m_cu : nullptr); |
d9b3de22 | 20832 | } |
804d2729 | 20833 | m_last_subfile = m_cu->builder->get_current_subfile (); |
6f77053d | 20834 | m_last_line = m_line; |
d9b3de22 DE |
20835 | } |
20836 | } | |
20837 | } | |
20838 | } | |
20839 | ||
804d2729 TT |
20840 | lnp_state_machine::lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, |
20841 | line_header *lh, bool record_lines_p) | |
d9b3de22 | 20842 | { |
804d2729 | 20843 | m_cu = cu; |
6f77053d PA |
20844 | m_gdbarch = arch; |
20845 | m_record_lines_p = record_lines_p; | |
20846 | m_line_header = lh; | |
d9b3de22 | 20847 | |
804d2729 | 20848 | m_currently_recording_lines = true; |
d9b3de22 | 20849 | |
d9b3de22 DE |
20850 | /* Call `gdbarch_adjust_dwarf2_line' on the initial 0 address as if there |
20851 | was a line entry for it so that the backend has a chance to adjust it | |
20852 | and also record it in case it needs it. This is currently used by MIPS | |
20853 | code, cf. `mips_adjust_dwarf2_line'. */ | |
6f77053d PA |
20854 | m_address = gdbarch_adjust_dwarf2_line (arch, 0, 0); |
20855 | m_is_stmt = lh->default_is_stmt; | |
20856 | m_discriminator = 0; | |
252a6764 DE |
20857 | } |
20858 | ||
6f77053d PA |
20859 | void |
20860 | lnp_state_machine::check_line_address (struct dwarf2_cu *cu, | |
20861 | const gdb_byte *line_ptr, | |
7ab6656f | 20862 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address) |
924c2928 | 20863 | { |
7ab6656f OJ |
20864 | /* If ADDRESS < UNRELOCATED_LOWPC then it's not a usable value, it's outside |
20865 | the pc range of the CU. However, we restrict the test to only ADDRESS | |
20866 | values of zero to preserve GDB's previous behaviour which is to handle | |
20867 | the specific case of a function being GC'd by the linker. */ | |
924c2928 | 20868 | |
7ab6656f | 20869 | if (address == 0 && address < unrelocated_lowpc) |
924c2928 DE |
20870 | { |
20871 | /* This line table is for a function which has been | |
20872 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
20873 | ||
518817b3 | 20874 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
924c2928 DE |
20875 | long line_offset = line_ptr - get_debug_line_section (cu)->buffer; |
20876 | ||
b98664d3 | 20877 | complaint (_(".debug_line address at offset 0x%lx is 0 [in module %s]"), |
924c2928 | 20878 | line_offset, objfile_name (objfile)); |
804d2729 TT |
20879 | m_currently_recording_lines = false; |
20880 | /* Note: m_currently_recording_lines is left as false until we see | |
20881 | DW_LNE_end_sequence. */ | |
924c2928 DE |
20882 | } |
20883 | } | |
20884 | ||
f3f5162e | 20885 | /* Subroutine of dwarf_decode_lines to simplify it. |
d9b3de22 DE |
20886 | Process the line number information in LH. |
20887 | If DECODE_FOR_PST_P is non-zero, all we do is process the line number | |
20888 | program in order to set included_p for every referenced header. */ | |
debd256d | 20889 | |
c906108c | 20890 | static void |
43f3e411 DE |
20891 | dwarf_decode_lines_1 (struct line_header *lh, struct dwarf2_cu *cu, |
20892 | const int decode_for_pst_p, CORE_ADDR lowpc) | |
c906108c | 20893 | { |
d521ce57 TT |
20894 | const gdb_byte *line_ptr, *extended_end; |
20895 | const gdb_byte *line_end; | |
a8c50c1f | 20896 | unsigned int bytes_read, extended_len; |
699ca60a | 20897 | unsigned char op_code, extended_op; |
e142c38c | 20898 | CORE_ADDR baseaddr; |
518817b3 | 20899 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
f3f5162e | 20900 | bfd *abfd = objfile->obfd; |
fbf65064 | 20901 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
6f77053d PA |
20902 | /* True if we're recording line info (as opposed to building partial |
20903 | symtabs and just interested in finding include files mentioned by | |
20904 | the line number program). */ | |
20905 | bool record_lines_p = !decode_for_pst_p; | |
e142c38c DJ |
20906 | |
20907 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 20908 | |
debd256d JB |
20909 | line_ptr = lh->statement_program_start; |
20910 | line_end = lh->statement_program_end; | |
c906108c SS |
20911 | |
20912 | /* Read the statement sequences until there's nothing left. */ | |
20913 | while (line_ptr < line_end) | |
20914 | { | |
6f77053d PA |
20915 | /* The DWARF line number program state machine. Reset the state |
20916 | machine at the start of each sequence. */ | |
804d2729 | 20917 | lnp_state_machine state_machine (cu, gdbarch, lh, record_lines_p); |
6f77053d | 20918 | bool end_sequence = false; |
d9b3de22 | 20919 | |
8c43009f | 20920 | if (record_lines_p) |
c906108c | 20921 | { |
8c43009f PA |
20922 | /* Start a subfile for the current file of the state |
20923 | machine. */ | |
20924 | const file_entry *fe = state_machine.current_file (); | |
20925 | ||
20926 | if (fe != NULL) | |
804d2729 | 20927 | dwarf2_start_subfile (cu, fe->name, fe->include_dir (lh)); |
c906108c SS |
20928 | } |
20929 | ||
a738430d | 20930 | /* Decode the table. */ |
d9b3de22 | 20931 | while (line_ptr < line_end && !end_sequence) |
c906108c SS |
20932 | { |
20933 | op_code = read_1_byte (abfd, line_ptr); | |
20934 | line_ptr += 1; | |
9aa1fe7e | 20935 | |
debd256d | 20936 | if (op_code >= lh->opcode_base) |
6e70227d | 20937 | { |
8e07a239 | 20938 | /* Special opcode. */ |
6f77053d | 20939 | state_machine.handle_special_opcode (op_code); |
9aa1fe7e GK |
20940 | } |
20941 | else switch (op_code) | |
c906108c SS |
20942 | { |
20943 | case DW_LNS_extended_op: | |
3e43a32a MS |
20944 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
20945 | &bytes_read); | |
473b7be6 | 20946 | line_ptr += bytes_read; |
a8c50c1f | 20947 | extended_end = line_ptr + extended_len; |
c906108c SS |
20948 | extended_op = read_1_byte (abfd, line_ptr); |
20949 | line_ptr += 1; | |
20950 | switch (extended_op) | |
20951 | { | |
20952 | case DW_LNE_end_sequence: | |
6f77053d PA |
20953 | state_machine.handle_end_sequence (); |
20954 | end_sequence = true; | |
c906108c SS |
20955 | break; |
20956 | case DW_LNE_set_address: | |
d9b3de22 DE |
20957 | { |
20958 | CORE_ADDR address | |
20959 | = read_address (abfd, line_ptr, cu, &bytes_read); | |
d9b3de22 | 20960 | line_ptr += bytes_read; |
6f77053d PA |
20961 | |
20962 | state_machine.check_line_address (cu, line_ptr, | |
7ab6656f | 20963 | lowpc - baseaddr, address); |
6f77053d | 20964 | state_machine.handle_set_address (baseaddr, address); |
d9b3de22 | 20965 | } |
c906108c SS |
20966 | break; |
20967 | case DW_LNE_define_file: | |
debd256d | 20968 | { |
d521ce57 | 20969 | const char *cur_file; |
ecfb656c PA |
20970 | unsigned int mod_time, length; |
20971 | dir_index dindex; | |
6e70227d | 20972 | |
3e43a32a MS |
20973 | cur_file = read_direct_string (abfd, line_ptr, |
20974 | &bytes_read); | |
debd256d | 20975 | line_ptr += bytes_read; |
ecfb656c | 20976 | dindex = (dir_index) |
debd256d JB |
20977 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
20978 | line_ptr += bytes_read; | |
20979 | mod_time = | |
20980 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20981 | line_ptr += bytes_read; | |
20982 | length = | |
20983 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20984 | line_ptr += bytes_read; | |
ecfb656c | 20985 | lh->add_file_name (cur_file, dindex, mod_time, length); |
debd256d | 20986 | } |
c906108c | 20987 | break; |
d0c6ba3d | 20988 | case DW_LNE_set_discriminator: |
6f77053d PA |
20989 | { |
20990 | /* The discriminator is not interesting to the | |
20991 | debugger; just ignore it. We still need to | |
20992 | check its value though: | |
20993 | if there are consecutive entries for the same | |
20994 | (non-prologue) line we want to coalesce them. | |
20995 | PR 17276. */ | |
20996 | unsigned int discr | |
20997 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20998 | line_ptr += bytes_read; | |
20999 | ||
21000 | state_machine.handle_set_discriminator (discr); | |
21001 | } | |
d0c6ba3d | 21002 | break; |
c906108c | 21003 | default: |
b98664d3 | 21004 | complaint (_("mangled .debug_line section")); |
debd256d | 21005 | return; |
c906108c | 21006 | } |
a8c50c1f DJ |
21007 | /* Make sure that we parsed the extended op correctly. If e.g. |
21008 | we expected a different address size than the producer used, | |
21009 | we may have read the wrong number of bytes. */ | |
21010 | if (line_ptr != extended_end) | |
21011 | { | |
b98664d3 | 21012 | complaint (_("mangled .debug_line section")); |
a8c50c1f DJ |
21013 | return; |
21014 | } | |
c906108c SS |
21015 | break; |
21016 | case DW_LNS_copy: | |
6f77053d | 21017 | state_machine.handle_copy (); |
c906108c SS |
21018 | break; |
21019 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
21020 | { |
21021 | CORE_ADDR adjust | |
21022 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
2dc7f7b3 | 21023 | line_ptr += bytes_read; |
6f77053d PA |
21024 | |
21025 | state_machine.handle_advance_pc (adjust); | |
2dc7f7b3 | 21026 | } |
c906108c SS |
21027 | break; |
21028 | case DW_LNS_advance_line: | |
a05a36a5 DE |
21029 | { |
21030 | int line_delta | |
21031 | = read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
a05a36a5 | 21032 | line_ptr += bytes_read; |
6f77053d PA |
21033 | |
21034 | state_machine.handle_advance_line (line_delta); | |
a05a36a5 | 21035 | } |
c906108c SS |
21036 | break; |
21037 | case DW_LNS_set_file: | |
d9b3de22 | 21038 | { |
6f77053d | 21039 | file_name_index file |
ecfb656c PA |
21040 | = (file_name_index) read_unsigned_leb128 (abfd, line_ptr, |
21041 | &bytes_read); | |
d9b3de22 | 21042 | line_ptr += bytes_read; |
8c43009f | 21043 | |
6f77053d | 21044 | state_machine.handle_set_file (file); |
d9b3de22 | 21045 | } |
c906108c SS |
21046 | break; |
21047 | case DW_LNS_set_column: | |
0ad93d4f | 21048 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
c906108c SS |
21049 | line_ptr += bytes_read; |
21050 | break; | |
21051 | case DW_LNS_negate_stmt: | |
6f77053d | 21052 | state_machine.handle_negate_stmt (); |
c906108c SS |
21053 | break; |
21054 | case DW_LNS_set_basic_block: | |
c906108c | 21055 | break; |
c2c6d25f JM |
21056 | /* Add to the address register of the state machine the |
21057 | address increment value corresponding to special opcode | |
a738430d MK |
21058 | 255. I.e., this value is scaled by the minimum |
21059 | instruction length since special opcode 255 would have | |
b021a221 | 21060 | scaled the increment. */ |
c906108c | 21061 | case DW_LNS_const_add_pc: |
6f77053d | 21062 | state_machine.handle_const_add_pc (); |
c906108c SS |
21063 | break; |
21064 | case DW_LNS_fixed_advance_pc: | |
3e29f34a | 21065 | { |
6f77053d | 21066 | CORE_ADDR addr_adj = read_2_bytes (abfd, line_ptr); |
3e29f34a | 21067 | line_ptr += 2; |
6f77053d PA |
21068 | |
21069 | state_machine.handle_fixed_advance_pc (addr_adj); | |
3e29f34a | 21070 | } |
c906108c | 21071 | break; |
9aa1fe7e | 21072 | default: |
a738430d MK |
21073 | { |
21074 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 21075 | int i; |
a738430d | 21076 | |
debd256d | 21077 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
21078 | { |
21079 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21080 | line_ptr += bytes_read; | |
21081 | } | |
21082 | } | |
c906108c SS |
21083 | } |
21084 | } | |
d9b3de22 DE |
21085 | |
21086 | if (!end_sequence) | |
21087 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
21088 | ||
21089 | /* We got a DW_LNE_end_sequence (or we ran off the end of the buffer, | |
21090 | in which case we still finish recording the last line). */ | |
6f77053d | 21091 | state_machine.record_line (true); |
c906108c | 21092 | } |
f3f5162e DE |
21093 | } |
21094 | ||
21095 | /* Decode the Line Number Program (LNP) for the given line_header | |
21096 | structure and CU. The actual information extracted and the type | |
21097 | of structures created from the LNP depends on the value of PST. | |
21098 | ||
21099 | 1. If PST is NULL, then this procedure uses the data from the program | |
21100 | to create all necessary symbol tables, and their linetables. | |
21101 | ||
21102 | 2. If PST is not NULL, this procedure reads the program to determine | |
21103 | the list of files included by the unit represented by PST, and | |
21104 | builds all the associated partial symbol tables. | |
21105 | ||
21106 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
21107 | It is used for relative paths in the line table. | |
21108 | NOTE: When processing partial symtabs (pst != NULL), | |
21109 | comp_dir == pst->dirname. | |
21110 | ||
21111 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
21112 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
21113 | symtab we don't use it in the name of the psymtabs we create. | |
21114 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
c3b7b696 YQ |
21115 | A good testcase for this is mb-inline.exp. |
21116 | ||
527f3840 JK |
21117 | LOWPC is the lowest address in CU (or 0 if not known). |
21118 | ||
21119 | Boolean DECODE_MAPPING specifies we need to fully decode .debug_line | |
21120 | for its PC<->lines mapping information. Otherwise only the filename | |
21121 | table is read in. */ | |
f3f5162e DE |
21122 | |
21123 | static void | |
21124 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
c3b7b696 | 21125 | struct dwarf2_cu *cu, struct partial_symtab *pst, |
527f3840 | 21126 | CORE_ADDR lowpc, int decode_mapping) |
f3f5162e | 21127 | { |
518817b3 | 21128 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
f3f5162e | 21129 | const int decode_for_pst_p = (pst != NULL); |
f3f5162e | 21130 | |
527f3840 JK |
21131 | if (decode_mapping) |
21132 | dwarf_decode_lines_1 (lh, cu, decode_for_pst_p, lowpc); | |
aaa75496 JB |
21133 | |
21134 | if (decode_for_pst_p) | |
21135 | { | |
21136 | int file_index; | |
21137 | ||
21138 | /* Now that we're done scanning the Line Header Program, we can | |
21139 | create the psymtab of each included file. */ | |
fff8551c | 21140 | for (file_index = 0; file_index < lh->file_names.size (); file_index++) |
aaa75496 JB |
21141 | if (lh->file_names[file_index].included_p == 1) |
21142 | { | |
c89b44cd | 21143 | gdb::unique_xmalloc_ptr<char> name_holder; |
d521ce57 | 21144 | const char *include_name = |
c89b44cd TT |
21145 | psymtab_include_file_name (lh, file_index, pst, comp_dir, |
21146 | &name_holder); | |
c6da4cef | 21147 | if (include_name != NULL) |
aaa75496 JB |
21148 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
21149 | } | |
21150 | } | |
cb1df416 DJ |
21151 | else |
21152 | { | |
21153 | /* Make sure a symtab is created for every file, even files | |
21154 | which contain only variables (i.e. no code with associated | |
21155 | line numbers). */ | |
804d2729 | 21156 | struct compunit_symtab *cust = cu->builder->get_compunit_symtab (); |
cb1df416 | 21157 | int i; |
cb1df416 | 21158 | |
fff8551c | 21159 | for (i = 0; i < lh->file_names.size (); i++) |
cb1df416 | 21160 | { |
8c43009f | 21161 | file_entry &fe = lh->file_names[i]; |
9a619af0 | 21162 | |
804d2729 | 21163 | dwarf2_start_subfile (cu, fe.name, fe.include_dir (lh)); |
cb1df416 | 21164 | |
804d2729 | 21165 | if (cu->builder->get_current_subfile ()->symtab == NULL) |
43f3e411 | 21166 | { |
804d2729 TT |
21167 | cu->builder->get_current_subfile ()->symtab |
21168 | = allocate_symtab (cust, | |
21169 | cu->builder->get_current_subfile ()->name); | |
43f3e411 | 21170 | } |
804d2729 | 21171 | fe.symtab = cu->builder->get_current_subfile ()->symtab; |
cb1df416 DJ |
21172 | } |
21173 | } | |
c906108c SS |
21174 | } |
21175 | ||
21176 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
21177 | DIRNAME the name of the source directory which contains FILENAME | |
4d663531 | 21178 | or NULL if not known. |
c906108c SS |
21179 | This routine tries to keep line numbers from identical absolute and |
21180 | relative file names in a common subfile. | |
21181 | ||
21182 | Using the `list' example from the GDB testsuite, which resides in | |
21183 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
21184 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
21185 | ||
c5aa993b | 21186 | DW_AT_name: /srcdir/list0.c |
4d663531 | 21187 | DW_AT_comp_dir: /compdir |
357e46e7 | 21188 | files.files[0].name: list0.h |
c5aa993b | 21189 | files.files[0].dir: /srcdir |
357e46e7 | 21190 | files.files[1].name: list0.c |
c5aa993b | 21191 | files.files[1].dir: /srcdir |
c906108c SS |
21192 | |
21193 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
21194 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
21195 | start_subfile will ensure that this happens provided that we pass the | |
21196 | concatenation of files.files[1].dir and files.files[1].name as the | |
21197 | subfile's name. */ | |
c906108c SS |
21198 | |
21199 | static void | |
804d2729 TT |
21200 | dwarf2_start_subfile (struct dwarf2_cu *cu, const char *filename, |
21201 | const char *dirname) | |
c906108c | 21202 | { |
d521ce57 | 21203 | char *copy = NULL; |
4f1520fb | 21204 | |
4d663531 | 21205 | /* In order not to lose the line information directory, |
4f1520fb FR |
21206 | we concatenate it to the filename when it makes sense. |
21207 | Note that the Dwarf3 standard says (speaking of filenames in line | |
21208 | information): ``The directory index is ignored for file names | |
21209 | that represent full path names''. Thus ignoring dirname in the | |
21210 | `else' branch below isn't an issue. */ | |
c906108c | 21211 | |
d5166ae1 | 21212 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
d521ce57 TT |
21213 | { |
21214 | copy = concat (dirname, SLASH_STRING, filename, (char *)NULL); | |
21215 | filename = copy; | |
21216 | } | |
c906108c | 21217 | |
804d2729 | 21218 | cu->builder->start_subfile (filename); |
4f1520fb | 21219 | |
d521ce57 TT |
21220 | if (copy != NULL) |
21221 | xfree (copy); | |
c906108c SS |
21222 | } |
21223 | ||
804d2729 TT |
21224 | /* Start a symtab for DWARF. NAME, COMP_DIR, LOW_PC are passed to the |
21225 | buildsym_compunit constructor. */ | |
f4dc4d17 | 21226 | |
43f3e411 | 21227 | static struct compunit_symtab * |
f4dc4d17 | 21228 | dwarf2_start_symtab (struct dwarf2_cu *cu, |
15d034d0 | 21229 | const char *name, const char *comp_dir, CORE_ADDR low_pc) |
f4dc4d17 | 21230 | { |
804d2729 | 21231 | gdb_assert (cu->builder == nullptr); |
43f3e411 | 21232 | |
804d2729 TT |
21233 | cu->builder.reset (new struct buildsym_compunit |
21234 | (cu->per_cu->dwarf2_per_objfile->objfile, | |
21235 | name, comp_dir, cu->language, low_pc)); | |
93b8bea4 | 21236 | |
804d2729 TT |
21237 | cu->list_in_scope = cu->builder->get_file_symbols (); |
21238 | ||
21239 | cu->builder->record_debugformat ("DWARF 2"); | |
21240 | cu->builder->record_producer (cu->producer); | |
f4dc4d17 | 21241 | |
9068261f | 21242 | cu->processing_has_namespace_info = false; |
43f3e411 | 21243 | |
804d2729 | 21244 | return cu->builder->get_compunit_symtab (); |
f4dc4d17 DE |
21245 | } |
21246 | ||
4c2df51b DJ |
21247 | static void |
21248 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 21249 | struct dwarf2_cu *cu) |
4c2df51b | 21250 | { |
518817b3 | 21251 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e7c27a73 DJ |
21252 | struct comp_unit_head *cu_header = &cu->header; |
21253 | ||
4c2df51b DJ |
21254 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
21255 | code here to turn a symbol with DW_AT_external and a | |
21256 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
21257 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
21258 | with some versions of binutils) where shared libraries could have | |
21259 | relocations against symbols in their debug information - the | |
21260 | minimal symbol would have the right address, but the debug info | |
21261 | would not. It's no longer necessary, because we will explicitly | |
21262 | apply relocations when we read in the debug information now. */ | |
21263 | ||
21264 | /* A DW_AT_location attribute with no contents indicates that a | |
21265 | variable has been optimized away. */ | |
21266 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
21267 | { | |
f1e6e072 | 21268 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
4c2df51b DJ |
21269 | return; |
21270 | } | |
21271 | ||
21272 | /* Handle one degenerate form of location expression specially, to | |
21273 | preserve GDB's previous behavior when section offsets are | |
3019eac3 DE |
21274 | specified. If this is just a DW_OP_addr or DW_OP_GNU_addr_index |
21275 | then mark this symbol as LOC_STATIC. */ | |
4c2df51b DJ |
21276 | |
21277 | if (attr_form_is_block (attr) | |
3019eac3 DE |
21278 | && ((DW_BLOCK (attr)->data[0] == DW_OP_addr |
21279 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size) | |
21280 | || (DW_BLOCK (attr)->data[0] == DW_OP_GNU_addr_index | |
21281 | && (DW_BLOCK (attr)->size | |
21282 | == 1 + leb128_size (&DW_BLOCK (attr)->data[1]))))) | |
4c2df51b | 21283 | { |
891d2f0b | 21284 | unsigned int dummy; |
4c2df51b | 21285 | |
3019eac3 DE |
21286 | if (DW_BLOCK (attr)->data[0] == DW_OP_addr) |
21287 | SYMBOL_VALUE_ADDRESS (sym) = | |
21288 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); | |
21289 | else | |
21290 | SYMBOL_VALUE_ADDRESS (sym) = | |
21291 | read_addr_index_from_leb128 (cu, DW_BLOCK (attr)->data + 1, &dummy); | |
f1e6e072 | 21292 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
4c2df51b DJ |
21293 | fixup_symbol_section (sym, objfile); |
21294 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
21295 | SYMBOL_SECTION (sym)); | |
4c2df51b DJ |
21296 | return; |
21297 | } | |
21298 | ||
21299 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
21300 | expression evaluator, and use LOC_COMPUTED only when necessary | |
21301 | (i.e. when the value of a register or memory location is | |
21302 | referenced, or a thread-local block, etc.). Then again, it might | |
21303 | not be worthwhile. I'm assuming that it isn't unless performance | |
21304 | or memory numbers show me otherwise. */ | |
21305 | ||
f1e6e072 | 21306 | dwarf2_symbol_mark_computed (attr, sym, cu, 0); |
8be455d7 | 21307 | |
f1e6e072 | 21308 | if (SYMBOL_COMPUTED_OPS (sym)->location_has_loclist) |
9068261f | 21309 | cu->has_loclist = true; |
4c2df51b DJ |
21310 | } |
21311 | ||
c906108c SS |
21312 | /* Given a pointer to a DWARF information entry, figure out if we need |
21313 | to make a symbol table entry for it, and if so, create a new entry | |
21314 | and return a pointer to it. | |
21315 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
21316 | used the passed type. |
21317 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
21318 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
21319 | |
21320 | static struct symbol * | |
5e2db402 TT |
21321 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
21322 | struct symbol *space) | |
c906108c | 21323 | { |
518817b3 SM |
21324 | struct dwarf2_per_objfile *dwarf2_per_objfile |
21325 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 21326 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 21327 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 21328 | struct symbol *sym = NULL; |
15d034d0 | 21329 | const char *name; |
c906108c SS |
21330 | struct attribute *attr = NULL; |
21331 | struct attribute *attr2 = NULL; | |
e142c38c | 21332 | CORE_ADDR baseaddr; |
e37fd15a SW |
21333 | struct pending **list_to_add = NULL; |
21334 | ||
edb3359d | 21335 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c DJ |
21336 | |
21337 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 21338 | |
94af9270 | 21339 | name = dwarf2_name (die, cu); |
c906108c SS |
21340 | if (name) |
21341 | { | |
94af9270 | 21342 | const char *linkagename; |
34eaf542 | 21343 | int suppress_add = 0; |
94af9270 | 21344 | |
34eaf542 TT |
21345 | if (space) |
21346 | sym = space; | |
21347 | else | |
e623cf5d | 21348 | sym = allocate_symbol (objfile); |
c906108c | 21349 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
21350 | |
21351 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
f85f34ed | 21352 | SYMBOL_SET_LANGUAGE (sym, cu->language, &objfile->objfile_obstack); |
94af9270 KS |
21353 | linkagename = dwarf2_physname (name, die, cu); |
21354 | SYMBOL_SET_NAMES (sym, linkagename, strlen (linkagename), 0, objfile); | |
c906108c | 21355 | |
f55ee35c JK |
21356 | /* Fortran does not have mangling standard and the mangling does differ |
21357 | between gfortran, iFort etc. */ | |
21358 | if (cu->language == language_fortran | |
b250c185 | 21359 | && symbol_get_demangled_name (&(sym->ginfo)) == NULL) |
29df156d | 21360 | symbol_set_demangled_name (&(sym->ginfo), |
cfc594ee | 21361 | dwarf2_full_name (name, die, cu), |
29df156d | 21362 | NULL); |
f55ee35c | 21363 | |
c906108c | 21364 | /* Default assumptions. |
c5aa993b | 21365 | Use the passed type or decode it from the die. */ |
176620f1 | 21366 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 21367 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
21368 | if (type != NULL) |
21369 | SYMBOL_TYPE (sym) = type; | |
21370 | else | |
e7c27a73 | 21371 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
21372 | attr = dwarf2_attr (die, |
21373 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
21374 | cu); | |
c906108c SS |
21375 | if (attr) |
21376 | { | |
21377 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
21378 | } | |
cb1df416 | 21379 | |
edb3359d DJ |
21380 | attr = dwarf2_attr (die, |
21381 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
21382 | cu); | |
cb1df416 DJ |
21383 | if (attr) |
21384 | { | |
ecfb656c | 21385 | file_name_index file_index = (file_name_index) DW_UNSND (attr); |
8c43009f | 21386 | struct file_entry *fe; |
9a619af0 | 21387 | |
ecfb656c PA |
21388 | if (cu->line_header != NULL) |
21389 | fe = cu->line_header->file_name_at (file_index); | |
8c43009f PA |
21390 | else |
21391 | fe = NULL; | |
21392 | ||
21393 | if (fe == NULL) | |
b98664d3 | 21394 | complaint (_("file index out of range")); |
8c43009f PA |
21395 | else |
21396 | symbol_set_symtab (sym, fe->symtab); | |
cb1df416 DJ |
21397 | } |
21398 | ||
c906108c SS |
21399 | switch (die->tag) |
21400 | { | |
21401 | case DW_TAG_label: | |
e142c38c | 21402 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c | 21403 | if (attr) |
3e29f34a MR |
21404 | { |
21405 | CORE_ADDR addr; | |
21406 | ||
21407 | addr = attr_value_as_address (attr); | |
21408 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr + baseaddr); | |
21409 | SYMBOL_VALUE_ADDRESS (sym) = addr; | |
21410 | } | |
0f5238ed TT |
21411 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
21412 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
f1e6e072 | 21413 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
d3cb6808 | 21414 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
21415 | break; |
21416 | case DW_TAG_subprogram: | |
21417 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
21418 | finish_block. */ | |
f1e6e072 | 21419 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
e142c38c | 21420 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d JB |
21421 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
21422 | || cu->language == language_ada) | |
c906108c | 21423 | { |
2cfa0c8d JB |
21424 | /* Subprograms marked external are stored as a global symbol. |
21425 | Ada subprograms, whether marked external or not, are always | |
21426 | stored as a global symbol, because we want to be able to | |
21427 | access them globally. For instance, we want to be able | |
21428 | to break on a nested subprogram without having to | |
21429 | specify the context. */ | |
804d2729 | 21430 | list_to_add = cu->builder->get_global_symbols (); |
c906108c SS |
21431 | } |
21432 | else | |
21433 | { | |
e37fd15a | 21434 | list_to_add = cu->list_in_scope; |
c906108c SS |
21435 | } |
21436 | break; | |
edb3359d DJ |
21437 | case DW_TAG_inlined_subroutine: |
21438 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
21439 | finish_block. */ | |
f1e6e072 | 21440 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
edb3359d | 21441 | SYMBOL_INLINED (sym) = 1; |
481860b3 | 21442 | list_to_add = cu->list_in_scope; |
edb3359d | 21443 | break; |
34eaf542 TT |
21444 | case DW_TAG_template_value_param: |
21445 | suppress_add = 1; | |
21446 | /* Fall through. */ | |
72929c62 | 21447 | case DW_TAG_constant: |
c906108c | 21448 | case DW_TAG_variable: |
254e6b9e | 21449 | case DW_TAG_member: |
0963b4bd MS |
21450 | /* Compilation with minimal debug info may result in |
21451 | variables with missing type entries. Change the | |
21452 | misleading `void' type to something sensible. */ | |
c906108c | 21453 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) |
46a4882b | 21454 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_int; |
64c50499 | 21455 | |
e142c38c | 21456 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
21457 | /* In the case of DW_TAG_member, we should only be called for |
21458 | static const members. */ | |
21459 | if (die->tag == DW_TAG_member) | |
21460 | { | |
3863f96c DE |
21461 | /* dwarf2_add_field uses die_is_declaration, |
21462 | so we do the same. */ | |
254e6b9e DE |
21463 | gdb_assert (die_is_declaration (die, cu)); |
21464 | gdb_assert (attr); | |
21465 | } | |
c906108c SS |
21466 | if (attr) |
21467 | { | |
e7c27a73 | 21468 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 21469 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 21470 | if (!suppress_add) |
34eaf542 TT |
21471 | { |
21472 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
804d2729 | 21473 | list_to_add = cu->builder->get_global_symbols (); |
34eaf542 | 21474 | else |
e37fd15a | 21475 | list_to_add = cu->list_in_scope; |
34eaf542 | 21476 | } |
c906108c SS |
21477 | break; |
21478 | } | |
e142c38c | 21479 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
21480 | if (attr) |
21481 | { | |
e7c27a73 | 21482 | var_decode_location (attr, sym, cu); |
e142c38c | 21483 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
21484 | |
21485 | /* Fortran explicitly imports any global symbols to the local | |
21486 | scope by DW_TAG_common_block. */ | |
21487 | if (cu->language == language_fortran && die->parent | |
21488 | && die->parent->tag == DW_TAG_common_block) | |
21489 | attr2 = NULL; | |
21490 | ||
caac4577 JG |
21491 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
21492 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
21493 | && !dwarf2_per_objfile->has_section_at_zero) | |
21494 | { | |
21495 | /* When a static variable is eliminated by the linker, | |
21496 | the corresponding debug information is not stripped | |
21497 | out, but the variable address is set to null; | |
21498 | do not add such variables into symbol table. */ | |
21499 | } | |
21500 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 21501 | { |
f55ee35c JK |
21502 | /* Workaround gfortran PR debug/40040 - it uses |
21503 | DW_AT_location for variables in -fPIC libraries which may | |
21504 | get overriden by other libraries/executable and get | |
21505 | a different address. Resolve it by the minimal symbol | |
21506 | which may come from inferior's executable using copy | |
21507 | relocation. Make this workaround only for gfortran as for | |
21508 | other compilers GDB cannot guess the minimal symbol | |
21509 | Fortran mangling kind. */ | |
21510 | if (cu->language == language_fortran && die->parent | |
21511 | && die->parent->tag == DW_TAG_module | |
21512 | && cu->producer | |
28586665 | 21513 | && startswith (cu->producer, "GNU Fortran")) |
f1e6e072 | 21514 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
f55ee35c | 21515 | |
1c809c68 TT |
21516 | /* A variable with DW_AT_external is never static, |
21517 | but it may be block-scoped. */ | |
804d2729 TT |
21518 | list_to_add |
21519 | = (cu->list_in_scope == cu->builder->get_file_symbols () | |
21520 | ? cu->builder->get_global_symbols () | |
21521 | : cu->list_in_scope); | |
1c809c68 | 21522 | } |
c906108c | 21523 | else |
e37fd15a | 21524 | list_to_add = cu->list_in_scope; |
c906108c SS |
21525 | } |
21526 | else | |
21527 | { | |
21528 | /* We do not know the address of this symbol. | |
c5aa993b JM |
21529 | If it is an external symbol and we have type information |
21530 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
21531 | The address of the variable will then be determined from | |
21532 | the minimal symbol table whenever the variable is | |
21533 | referenced. */ | |
e142c38c | 21534 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
21535 | |
21536 | /* Fortran explicitly imports any global symbols to the local | |
21537 | scope by DW_TAG_common_block. */ | |
21538 | if (cu->language == language_fortran && die->parent | |
21539 | && die->parent->tag == DW_TAG_common_block) | |
21540 | { | |
21541 | /* SYMBOL_CLASS doesn't matter here because | |
21542 | read_common_block is going to reset it. */ | |
21543 | if (!suppress_add) | |
21544 | list_to_add = cu->list_in_scope; | |
21545 | } | |
21546 | else if (attr2 && (DW_UNSND (attr2) != 0) | |
21547 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) | |
c906108c | 21548 | { |
0fe7935b DJ |
21549 | /* A variable with DW_AT_external is never static, but it |
21550 | may be block-scoped. */ | |
804d2729 TT |
21551 | list_to_add |
21552 | = (cu->list_in_scope == cu->builder->get_file_symbols () | |
21553 | ? cu->builder->get_global_symbols () | |
21554 | : cu->list_in_scope); | |
0fe7935b | 21555 | |
f1e6e072 | 21556 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
c906108c | 21557 | } |
442ddf59 JK |
21558 | else if (!die_is_declaration (die, cu)) |
21559 | { | |
21560 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
21561 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
21562 | if (!suppress_add) |
21563 | list_to_add = cu->list_in_scope; | |
442ddf59 | 21564 | } |
c906108c SS |
21565 | } |
21566 | break; | |
21567 | case DW_TAG_formal_parameter: | |
a60f3166 TT |
21568 | { |
21569 | /* If we are inside a function, mark this as an argument. If | |
21570 | not, we might be looking at an argument to an inlined function | |
21571 | when we do not have enough information to show inlined frames; | |
21572 | pretend it's a local variable in that case so that the user can | |
21573 | still see it. */ | |
804d2729 TT |
21574 | struct context_stack *curr |
21575 | = cu->builder->get_current_context_stack (); | |
a60f3166 TT |
21576 | if (curr != nullptr && curr->name != nullptr) |
21577 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
21578 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
21579 | if (attr) | |
21580 | { | |
21581 | var_decode_location (attr, sym, cu); | |
21582 | } | |
21583 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
21584 | if (attr) | |
21585 | { | |
21586 | dwarf2_const_value (attr, sym, cu); | |
21587 | } | |
f346a30d | 21588 | |
a60f3166 TT |
21589 | list_to_add = cu->list_in_scope; |
21590 | } | |
c906108c SS |
21591 | break; |
21592 | case DW_TAG_unspecified_parameters: | |
21593 | /* From varargs functions; gdb doesn't seem to have any | |
21594 | interest in this information, so just ignore it for now. | |
21595 | (FIXME?) */ | |
21596 | break; | |
34eaf542 TT |
21597 | case DW_TAG_template_type_param: |
21598 | suppress_add = 1; | |
21599 | /* Fall through. */ | |
c906108c | 21600 | case DW_TAG_class_type: |
680b30c7 | 21601 | case DW_TAG_interface_type: |
c906108c SS |
21602 | case DW_TAG_structure_type: |
21603 | case DW_TAG_union_type: | |
72019c9c | 21604 | case DW_TAG_set_type: |
c906108c | 21605 | case DW_TAG_enumeration_type: |
f1e6e072 | 21606 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 21607 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 21608 | |
63d06c5c | 21609 | { |
9c37b5ae | 21610 | /* NOTE: carlton/2003-11-10: C++ class symbols shouldn't |
63d06c5c DC |
21611 | really ever be static objects: otherwise, if you try |
21612 | to, say, break of a class's method and you're in a file | |
21613 | which doesn't mention that class, it won't work unless | |
21614 | the check for all static symbols in lookup_symbol_aux | |
21615 | saves you. See the OtherFileClass tests in | |
21616 | gdb.c++/namespace.exp. */ | |
21617 | ||
e37fd15a | 21618 | if (!suppress_add) |
34eaf542 | 21619 | { |
804d2729 TT |
21620 | list_to_add |
21621 | = (cu->list_in_scope == cu->builder->get_file_symbols () | |
21622 | && cu->language == language_cplus | |
21623 | ? cu->builder->get_global_symbols () | |
21624 | : cu->list_in_scope); | |
63d06c5c | 21625 | |
64382290 | 21626 | /* The semantics of C++ state that "struct foo { |
9c37b5ae | 21627 | ... }" also defines a typedef for "foo". */ |
64382290 | 21628 | if (cu->language == language_cplus |
45280282 | 21629 | || cu->language == language_ada |
c44af4eb TT |
21630 | || cu->language == language_d |
21631 | || cu->language == language_rust) | |
64382290 TT |
21632 | { |
21633 | /* The symbol's name is already allocated along | |
21634 | with this objfile, so we don't need to | |
21635 | duplicate it for the type. */ | |
21636 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
21637 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_SEARCH_NAME (sym); | |
21638 | } | |
63d06c5c DC |
21639 | } |
21640 | } | |
c906108c SS |
21641 | break; |
21642 | case DW_TAG_typedef: | |
f1e6e072 | 21643 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
63d06c5c | 21644 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 21645 | list_to_add = cu->list_in_scope; |
63d06c5c | 21646 | break; |
c906108c | 21647 | case DW_TAG_base_type: |
a02abb62 | 21648 | case DW_TAG_subrange_type: |
f1e6e072 | 21649 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 21650 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 21651 | list_to_add = cu->list_in_scope; |
c906108c SS |
21652 | break; |
21653 | case DW_TAG_enumerator: | |
e142c38c | 21654 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
21655 | if (attr) |
21656 | { | |
e7c27a73 | 21657 | dwarf2_const_value (attr, sym, cu); |
c906108c | 21658 | } |
63d06c5c DC |
21659 | { |
21660 | /* NOTE: carlton/2003-11-10: See comment above in the | |
21661 | DW_TAG_class_type, etc. block. */ | |
21662 | ||
804d2729 TT |
21663 | list_to_add |
21664 | = (cu->list_in_scope == cu->builder->get_file_symbols () | |
21665 | && cu->language == language_cplus | |
21666 | ? cu->builder->get_global_symbols () | |
21667 | : cu->list_in_scope); | |
63d06c5c | 21668 | } |
c906108c | 21669 | break; |
74921315 | 21670 | case DW_TAG_imported_declaration: |
5c4e30ca | 21671 | case DW_TAG_namespace: |
f1e6e072 | 21672 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
804d2729 | 21673 | list_to_add = cu->builder->get_global_symbols (); |
5c4e30ca | 21674 | break; |
530e8392 KB |
21675 | case DW_TAG_module: |
21676 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; | |
21677 | SYMBOL_DOMAIN (sym) = MODULE_DOMAIN; | |
804d2729 | 21678 | list_to_add = cu->builder->get_global_symbols (); |
530e8392 | 21679 | break; |
4357ac6c | 21680 | case DW_TAG_common_block: |
f1e6e072 | 21681 | SYMBOL_ACLASS_INDEX (sym) = LOC_COMMON_BLOCK; |
4357ac6c | 21682 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; |
d3cb6808 | 21683 | add_symbol_to_list (sym, cu->list_in_scope); |
4357ac6c | 21684 | break; |
c906108c SS |
21685 | default: |
21686 | /* Not a tag we recognize. Hopefully we aren't processing | |
21687 | trash data, but since we must specifically ignore things | |
21688 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 21689 | this point. */ |
b98664d3 | 21690 | complaint (_("unsupported tag: '%s'"), |
4d3c2250 | 21691 | dwarf_tag_name (die->tag)); |
c906108c SS |
21692 | break; |
21693 | } | |
df8a16a1 | 21694 | |
e37fd15a SW |
21695 | if (suppress_add) |
21696 | { | |
21697 | sym->hash_next = objfile->template_symbols; | |
21698 | objfile->template_symbols = sym; | |
21699 | list_to_add = NULL; | |
21700 | } | |
21701 | ||
21702 | if (list_to_add != NULL) | |
d3cb6808 | 21703 | add_symbol_to_list (sym, list_to_add); |
e37fd15a | 21704 | |
df8a16a1 DJ |
21705 | /* For the benefit of old versions of GCC, check for anonymous |
21706 | namespaces based on the demangled name. */ | |
4d4ec4e5 | 21707 | if (!cu->processing_has_namespace_info |
94af9270 | 21708 | && cu->language == language_cplus) |
804d2729 | 21709 | cp_scan_for_anonymous_namespaces (cu->builder.get (), sym, objfile); |
c906108c SS |
21710 | } |
21711 | return (sym); | |
21712 | } | |
21713 | ||
98bfdba5 PA |
21714 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
21715 | zero-extend it as appropriate for the symbol's type. The DWARF | |
21716 | standard (v4) is not entirely clear about the meaning of using | |
21717 | DW_FORM_dataN for a constant with a signed type, where the type is | |
21718 | wider than the data. The conclusion of a discussion on the DWARF | |
21719 | list was that this is unspecified. We choose to always zero-extend | |
21720 | because that is the interpretation long in use by GCC. */ | |
c906108c | 21721 | |
98bfdba5 | 21722 | static gdb_byte * |
ff39bb5e | 21723 | dwarf2_const_value_data (const struct attribute *attr, struct obstack *obstack, |
12df843f | 21724 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 21725 | { |
518817b3 | 21726 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e17a4113 UW |
21727 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
21728 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
21729 | LONGEST l = DW_UNSND (attr); |
21730 | ||
21731 | if (bits < sizeof (*value) * 8) | |
21732 | { | |
21733 | l &= ((LONGEST) 1 << bits) - 1; | |
21734 | *value = l; | |
21735 | } | |
21736 | else if (bits == sizeof (*value) * 8) | |
21737 | *value = l; | |
21738 | else | |
21739 | { | |
224c3ddb | 21740 | gdb_byte *bytes = (gdb_byte *) obstack_alloc (obstack, bits / 8); |
98bfdba5 PA |
21741 | store_unsigned_integer (bytes, bits / 8, byte_order, l); |
21742 | return bytes; | |
21743 | } | |
21744 | ||
21745 | return NULL; | |
21746 | } | |
21747 | ||
21748 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
21749 | the value does not fit in *VALUE, set *BYTES - either already | |
21750 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
21751 | or, set *BATON, if we translated the constant to a location | |
21752 | expression. */ | |
21753 | ||
21754 | static void | |
ff39bb5e | 21755 | dwarf2_const_value_attr (const struct attribute *attr, struct type *type, |
98bfdba5 PA |
21756 | const char *name, struct obstack *obstack, |
21757 | struct dwarf2_cu *cu, | |
d521ce57 | 21758 | LONGEST *value, const gdb_byte **bytes, |
98bfdba5 PA |
21759 | struct dwarf2_locexpr_baton **baton) |
21760 | { | |
518817b3 | 21761 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
98bfdba5 | 21762 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 21763 | struct dwarf_block *blk; |
98bfdba5 PA |
21764 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
21765 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
21766 | ||
21767 | *value = 0; | |
21768 | *bytes = NULL; | |
21769 | *baton = NULL; | |
c906108c SS |
21770 | |
21771 | switch (attr->form) | |
21772 | { | |
21773 | case DW_FORM_addr: | |
3019eac3 | 21774 | case DW_FORM_GNU_addr_index: |
ac56253d | 21775 | { |
ac56253d TT |
21776 | gdb_byte *data; |
21777 | ||
98bfdba5 PA |
21778 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
21779 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 21780 | cu_header->addr_size, |
98bfdba5 | 21781 | TYPE_LENGTH (type)); |
ac56253d TT |
21782 | /* Symbols of this form are reasonably rare, so we just |
21783 | piggyback on the existing location code rather than writing | |
21784 | a new implementation of symbol_computed_ops. */ | |
8d749320 | 21785 | *baton = XOBNEW (obstack, struct dwarf2_locexpr_baton); |
98bfdba5 PA |
21786 | (*baton)->per_cu = cu->per_cu; |
21787 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 21788 | |
98bfdba5 | 21789 | (*baton)->size = 2 + cu_header->addr_size; |
224c3ddb | 21790 | data = (gdb_byte *) obstack_alloc (obstack, (*baton)->size); |
98bfdba5 | 21791 | (*baton)->data = data; |
ac56253d TT |
21792 | |
21793 | data[0] = DW_OP_addr; | |
21794 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
21795 | byte_order, DW_ADDR (attr)); | |
21796 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 21797 | } |
c906108c | 21798 | break; |
4ac36638 | 21799 | case DW_FORM_string: |
93b5768b | 21800 | case DW_FORM_strp: |
3019eac3 | 21801 | case DW_FORM_GNU_str_index: |
36586728 | 21802 | case DW_FORM_GNU_strp_alt: |
98bfdba5 PA |
21803 | /* DW_STRING is already allocated on the objfile obstack, point |
21804 | directly to it. */ | |
d521ce57 | 21805 | *bytes = (const gdb_byte *) DW_STRING (attr); |
93b5768b | 21806 | break; |
c906108c SS |
21807 | case DW_FORM_block1: |
21808 | case DW_FORM_block2: | |
21809 | case DW_FORM_block4: | |
21810 | case DW_FORM_block: | |
2dc7f7b3 | 21811 | case DW_FORM_exprloc: |
0224619f | 21812 | case DW_FORM_data16: |
c906108c | 21813 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
21814 | if (TYPE_LENGTH (type) != blk->size) |
21815 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
21816 | TYPE_LENGTH (type)); | |
21817 | *bytes = blk->data; | |
c906108c | 21818 | break; |
2df3850c JM |
21819 | |
21820 | /* The DW_AT_const_value attributes are supposed to carry the | |
21821 | symbol's value "represented as it would be on the target | |
21822 | architecture." By the time we get here, it's already been | |
21823 | converted to host endianness, so we just need to sign- or | |
21824 | zero-extend it as appropriate. */ | |
21825 | case DW_FORM_data1: | |
3aef2284 | 21826 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 8); |
2df3850c | 21827 | break; |
c906108c | 21828 | case DW_FORM_data2: |
3aef2284 | 21829 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 16); |
2df3850c | 21830 | break; |
c906108c | 21831 | case DW_FORM_data4: |
3aef2284 | 21832 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 32); |
2df3850c | 21833 | break; |
c906108c | 21834 | case DW_FORM_data8: |
3aef2284 | 21835 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 64); |
2df3850c JM |
21836 | break; |
21837 | ||
c906108c | 21838 | case DW_FORM_sdata: |
663c44ac | 21839 | case DW_FORM_implicit_const: |
98bfdba5 | 21840 | *value = DW_SND (attr); |
2df3850c JM |
21841 | break; |
21842 | ||
c906108c | 21843 | case DW_FORM_udata: |
98bfdba5 | 21844 | *value = DW_UNSND (attr); |
c906108c | 21845 | break; |
2df3850c | 21846 | |
c906108c | 21847 | default: |
b98664d3 | 21848 | complaint (_("unsupported const value attribute form: '%s'"), |
4d3c2250 | 21849 | dwarf_form_name (attr->form)); |
98bfdba5 | 21850 | *value = 0; |
c906108c SS |
21851 | break; |
21852 | } | |
21853 | } | |
21854 | ||
2df3850c | 21855 | |
98bfdba5 PA |
21856 | /* Copy constant value from an attribute to a symbol. */ |
21857 | ||
2df3850c | 21858 | static void |
ff39bb5e | 21859 | dwarf2_const_value (const struct attribute *attr, struct symbol *sym, |
98bfdba5 | 21860 | struct dwarf2_cu *cu) |
2df3850c | 21861 | { |
518817b3 | 21862 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
12df843f | 21863 | LONGEST value; |
d521ce57 | 21864 | const gdb_byte *bytes; |
98bfdba5 | 21865 | struct dwarf2_locexpr_baton *baton; |
2df3850c | 21866 | |
98bfdba5 PA |
21867 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
21868 | SYMBOL_PRINT_NAME (sym), | |
21869 | &objfile->objfile_obstack, cu, | |
21870 | &value, &bytes, &baton); | |
2df3850c | 21871 | |
98bfdba5 PA |
21872 | if (baton != NULL) |
21873 | { | |
98bfdba5 | 21874 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 21875 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
98bfdba5 PA |
21876 | } |
21877 | else if (bytes != NULL) | |
21878 | { | |
21879 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
f1e6e072 | 21880 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
98bfdba5 PA |
21881 | } |
21882 | else | |
21883 | { | |
21884 | SYMBOL_VALUE (sym) = value; | |
f1e6e072 | 21885 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
98bfdba5 | 21886 | } |
2df3850c JM |
21887 | } |
21888 | ||
c906108c SS |
21889 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
21890 | ||
21891 | static struct type * | |
e7c27a73 | 21892 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21893 | { |
c906108c | 21894 | struct attribute *type_attr; |
c906108c | 21895 | |
e142c38c | 21896 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
21897 | if (!type_attr) |
21898 | { | |
518817b3 | 21899 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 21900 | /* A missing DW_AT_type represents a void type. */ |
518817b3 | 21901 | return objfile_type (objfile)->builtin_void; |
c906108c | 21902 | } |
348e048f | 21903 | |
673bfd45 | 21904 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
21905 | } |
21906 | ||
b4ba55a1 JB |
21907 | /* True iff CU's producer generates GNAT Ada auxiliary information |
21908 | that allows to find parallel types through that information instead | |
21909 | of having to do expensive parallel lookups by type name. */ | |
21910 | ||
21911 | static int | |
21912 | need_gnat_info (struct dwarf2_cu *cu) | |
21913 | { | |
de4cb04a JB |
21914 | /* Assume that the Ada compiler was GNAT, which always produces |
21915 | the auxiliary information. */ | |
21916 | return (cu->language == language_ada); | |
b4ba55a1 JB |
21917 | } |
21918 | ||
b4ba55a1 JB |
21919 | /* Return the auxiliary type of the die in question using its |
21920 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
21921 | attribute is not present. */ | |
21922 | ||
21923 | static struct type * | |
21924 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
21925 | { | |
b4ba55a1 | 21926 | struct attribute *type_attr; |
b4ba55a1 JB |
21927 | |
21928 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
21929 | if (!type_attr) | |
21930 | return NULL; | |
21931 | ||
673bfd45 | 21932 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
21933 | } |
21934 | ||
21935 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
21936 | descriptive type accordingly. */ | |
21937 | ||
21938 | static void | |
21939 | set_descriptive_type (struct type *type, struct die_info *die, | |
21940 | struct dwarf2_cu *cu) | |
21941 | { | |
21942 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
21943 | ||
21944 | if (descriptive_type) | |
21945 | { | |
21946 | ALLOCATE_GNAT_AUX_TYPE (type); | |
21947 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
21948 | } | |
21949 | } | |
21950 | ||
c906108c SS |
21951 | /* Return the containing type of the die in question using its |
21952 | DW_AT_containing_type attribute. */ | |
21953 | ||
21954 | static struct type * | |
e7c27a73 | 21955 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21956 | { |
c906108c | 21957 | struct attribute *type_attr; |
518817b3 | 21958 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 21959 | |
e142c38c | 21960 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
21961 | if (!type_attr) |
21962 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
518817b3 | 21963 | "[in module %s]"), objfile_name (objfile)); |
33ac96f0 | 21964 | |
673bfd45 | 21965 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
21966 | } |
21967 | ||
ac9ec31b DE |
21968 | /* Return an error marker type to use for the ill formed type in DIE/CU. */ |
21969 | ||
21970 | static struct type * | |
21971 | build_error_marker_type (struct dwarf2_cu *cu, struct die_info *die) | |
21972 | { | |
518817b3 SM |
21973 | struct dwarf2_per_objfile *dwarf2_per_objfile |
21974 | = cu->per_cu->dwarf2_per_objfile; | |
ac9ec31b | 21975 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
528e1572 | 21976 | char *saved; |
ac9ec31b | 21977 | |
528e1572 SM |
21978 | std::string message |
21979 | = string_printf (_("<unknown type in %s, CU %s, DIE %s>"), | |
21980 | objfile_name (objfile), | |
21981 | sect_offset_str (cu->header.sect_off), | |
21982 | sect_offset_str (die->sect_off)); | |
224c3ddb | 21983 | saved = (char *) obstack_copy0 (&objfile->objfile_obstack, |
528e1572 | 21984 | message.c_str (), message.length ()); |
ac9ec31b | 21985 | |
19f392bc | 21986 | return init_type (objfile, TYPE_CODE_ERROR, 0, saved); |
ac9ec31b DE |
21987 | } |
21988 | ||
673bfd45 | 21989 | /* Look up the type of DIE in CU using its type attribute ATTR. |
ac9ec31b DE |
21990 | ATTR must be one of: DW_AT_type, DW_AT_GNAT_descriptive_type, |
21991 | DW_AT_containing_type. | |
673bfd45 DE |
21992 | If there is no type substitute an error marker. */ |
21993 | ||
c906108c | 21994 | static struct type * |
ff39bb5e | 21995 | lookup_die_type (struct die_info *die, const struct attribute *attr, |
673bfd45 | 21996 | struct dwarf2_cu *cu) |
c906108c | 21997 | { |
518817b3 SM |
21998 | struct dwarf2_per_objfile *dwarf2_per_objfile |
21999 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 22000 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
f792889a DJ |
22001 | struct type *this_type; |
22002 | ||
ac9ec31b DE |
22003 | gdb_assert (attr->name == DW_AT_type |
22004 | || attr->name == DW_AT_GNAT_descriptive_type | |
22005 | || attr->name == DW_AT_containing_type); | |
22006 | ||
673bfd45 DE |
22007 | /* First see if we have it cached. */ |
22008 | ||
36586728 TT |
22009 | if (attr->form == DW_FORM_GNU_ref_alt) |
22010 | { | |
22011 | struct dwarf2_per_cu_data *per_cu; | |
9c541725 | 22012 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
36586728 | 22013 | |
ed2dc618 SM |
22014 | per_cu = dwarf2_find_containing_comp_unit (sect_off, 1, |
22015 | dwarf2_per_objfile); | |
9c541725 | 22016 | this_type = get_die_type_at_offset (sect_off, per_cu); |
36586728 | 22017 | } |
7771576e | 22018 | else if (attr_form_is_ref (attr)) |
673bfd45 | 22019 | { |
9c541725 | 22020 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
673bfd45 | 22021 | |
9c541725 | 22022 | this_type = get_die_type_at_offset (sect_off, cu->per_cu); |
673bfd45 | 22023 | } |
55f1336d | 22024 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 | 22025 | { |
ac9ec31b | 22026 | ULONGEST signature = DW_SIGNATURE (attr); |
673bfd45 | 22027 | |
ac9ec31b | 22028 | return get_signatured_type (die, signature, cu); |
673bfd45 DE |
22029 | } |
22030 | else | |
22031 | { | |
b98664d3 | 22032 | complaint (_("Dwarf Error: Bad type attribute %s in DIE" |
9d8780f0 SM |
22033 | " at %s [in module %s]"), |
22034 | dwarf_attr_name (attr->name), sect_offset_str (die->sect_off), | |
4262abfb | 22035 | objfile_name (objfile)); |
ac9ec31b | 22036 | return build_error_marker_type (cu, die); |
673bfd45 DE |
22037 | } |
22038 | ||
22039 | /* If not cached we need to read it in. */ | |
22040 | ||
22041 | if (this_type == NULL) | |
22042 | { | |
ac9ec31b | 22043 | struct die_info *type_die = NULL; |
673bfd45 DE |
22044 | struct dwarf2_cu *type_cu = cu; |
22045 | ||
7771576e | 22046 | if (attr_form_is_ref (attr)) |
ac9ec31b DE |
22047 | type_die = follow_die_ref (die, attr, &type_cu); |
22048 | if (type_die == NULL) | |
22049 | return build_error_marker_type (cu, die); | |
22050 | /* If we find the type now, it's probably because the type came | |
3019eac3 DE |
22051 | from an inter-CU reference and the type's CU got expanded before |
22052 | ours. */ | |
ac9ec31b | 22053 | this_type = read_type_die (type_die, type_cu); |
673bfd45 DE |
22054 | } |
22055 | ||
22056 | /* If we still don't have a type use an error marker. */ | |
22057 | ||
22058 | if (this_type == NULL) | |
ac9ec31b | 22059 | return build_error_marker_type (cu, die); |
673bfd45 | 22060 | |
f792889a | 22061 | return this_type; |
c906108c SS |
22062 | } |
22063 | ||
673bfd45 DE |
22064 | /* Return the type in DIE, CU. |
22065 | Returns NULL for invalid types. | |
22066 | ||
02142a6c | 22067 | This first does a lookup in die_type_hash, |
673bfd45 DE |
22068 | and only reads the die in if necessary. |
22069 | ||
22070 | NOTE: This can be called when reading in partial or full symbols. */ | |
22071 | ||
f792889a | 22072 | static struct type * |
e7c27a73 | 22073 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22074 | { |
f792889a DJ |
22075 | struct type *this_type; |
22076 | ||
22077 | this_type = get_die_type (die, cu); | |
22078 | if (this_type) | |
22079 | return this_type; | |
22080 | ||
673bfd45 DE |
22081 | return read_type_die_1 (die, cu); |
22082 | } | |
22083 | ||
22084 | /* Read the type in DIE, CU. | |
22085 | Returns NULL for invalid types. */ | |
22086 | ||
22087 | static struct type * | |
22088 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
22089 | { | |
22090 | struct type *this_type = NULL; | |
22091 | ||
c906108c SS |
22092 | switch (die->tag) |
22093 | { | |
22094 | case DW_TAG_class_type: | |
680b30c7 | 22095 | case DW_TAG_interface_type: |
c906108c SS |
22096 | case DW_TAG_structure_type: |
22097 | case DW_TAG_union_type: | |
f792889a | 22098 | this_type = read_structure_type (die, cu); |
c906108c SS |
22099 | break; |
22100 | case DW_TAG_enumeration_type: | |
f792889a | 22101 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
22102 | break; |
22103 | case DW_TAG_subprogram: | |
22104 | case DW_TAG_subroutine_type: | |
edb3359d | 22105 | case DW_TAG_inlined_subroutine: |
f792889a | 22106 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
22107 | break; |
22108 | case DW_TAG_array_type: | |
f792889a | 22109 | this_type = read_array_type (die, cu); |
c906108c | 22110 | break; |
72019c9c | 22111 | case DW_TAG_set_type: |
f792889a | 22112 | this_type = read_set_type (die, cu); |
72019c9c | 22113 | break; |
c906108c | 22114 | case DW_TAG_pointer_type: |
f792889a | 22115 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
22116 | break; |
22117 | case DW_TAG_ptr_to_member_type: | |
f792889a | 22118 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
22119 | break; |
22120 | case DW_TAG_reference_type: | |
4297a3f0 AV |
22121 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_REF); |
22122 | break; | |
22123 | case DW_TAG_rvalue_reference_type: | |
22124 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_RVALUE_REF); | |
c906108c SS |
22125 | break; |
22126 | case DW_TAG_const_type: | |
f792889a | 22127 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
22128 | break; |
22129 | case DW_TAG_volatile_type: | |
f792889a | 22130 | this_type = read_tag_volatile_type (die, cu); |
c906108c | 22131 | break; |
06d66ee9 TT |
22132 | case DW_TAG_restrict_type: |
22133 | this_type = read_tag_restrict_type (die, cu); | |
22134 | break; | |
c906108c | 22135 | case DW_TAG_string_type: |
f792889a | 22136 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
22137 | break; |
22138 | case DW_TAG_typedef: | |
f792889a | 22139 | this_type = read_typedef (die, cu); |
c906108c | 22140 | break; |
a02abb62 | 22141 | case DW_TAG_subrange_type: |
f792889a | 22142 | this_type = read_subrange_type (die, cu); |
a02abb62 | 22143 | break; |
c906108c | 22144 | case DW_TAG_base_type: |
f792889a | 22145 | this_type = read_base_type (die, cu); |
c906108c | 22146 | break; |
81a17f79 | 22147 | case DW_TAG_unspecified_type: |
f792889a | 22148 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 22149 | break; |
0114d602 DJ |
22150 | case DW_TAG_namespace: |
22151 | this_type = read_namespace_type (die, cu); | |
22152 | break; | |
f55ee35c JK |
22153 | case DW_TAG_module: |
22154 | this_type = read_module_type (die, cu); | |
22155 | break; | |
a2c2acaf MW |
22156 | case DW_TAG_atomic_type: |
22157 | this_type = read_tag_atomic_type (die, cu); | |
22158 | break; | |
c906108c | 22159 | default: |
b98664d3 | 22160 | complaint (_("unexpected tag in read_type_die: '%s'"), |
4d3c2250 | 22161 | dwarf_tag_name (die->tag)); |
c906108c SS |
22162 | break; |
22163 | } | |
63d06c5c | 22164 | |
f792889a | 22165 | return this_type; |
63d06c5c DC |
22166 | } |
22167 | ||
abc72ce4 DE |
22168 | /* See if we can figure out if the class lives in a namespace. We do |
22169 | this by looking for a member function; its demangled name will | |
22170 | contain namespace info, if there is any. | |
22171 | Return the computed name or NULL. | |
22172 | Space for the result is allocated on the objfile's obstack. | |
22173 | This is the full-die version of guess_partial_die_structure_name. | |
22174 | In this case we know DIE has no useful parent. */ | |
22175 | ||
22176 | static char * | |
22177 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) | |
22178 | { | |
22179 | struct die_info *spec_die; | |
22180 | struct dwarf2_cu *spec_cu; | |
22181 | struct die_info *child; | |
518817b3 | 22182 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
abc72ce4 DE |
22183 | |
22184 | spec_cu = cu; | |
22185 | spec_die = die_specification (die, &spec_cu); | |
22186 | if (spec_die != NULL) | |
22187 | { | |
22188 | die = spec_die; | |
22189 | cu = spec_cu; | |
22190 | } | |
22191 | ||
22192 | for (child = die->child; | |
22193 | child != NULL; | |
22194 | child = child->sibling) | |
22195 | { | |
22196 | if (child->tag == DW_TAG_subprogram) | |
22197 | { | |
73b9be8b | 22198 | const char *linkage_name = dw2_linkage_name (child, cu); |
abc72ce4 | 22199 | |
7d45c7c3 | 22200 | if (linkage_name != NULL) |
abc72ce4 DE |
22201 | { |
22202 | char *actual_name | |
22203 | = language_class_name_from_physname (cu->language_defn, | |
7d45c7c3 | 22204 | linkage_name); |
abc72ce4 DE |
22205 | char *name = NULL; |
22206 | ||
22207 | if (actual_name != NULL) | |
22208 | { | |
15d034d0 | 22209 | const char *die_name = dwarf2_name (die, cu); |
abc72ce4 DE |
22210 | |
22211 | if (die_name != NULL | |
22212 | && strcmp (die_name, actual_name) != 0) | |
22213 | { | |
22214 | /* Strip off the class name from the full name. | |
22215 | We want the prefix. */ | |
22216 | int die_name_len = strlen (die_name); | |
22217 | int actual_name_len = strlen (actual_name); | |
22218 | ||
22219 | /* Test for '::' as a sanity check. */ | |
22220 | if (actual_name_len > die_name_len + 2 | |
3e43a32a MS |
22221 | && actual_name[actual_name_len |
22222 | - die_name_len - 1] == ':') | |
224c3ddb | 22223 | name = (char *) obstack_copy0 ( |
e3b94546 | 22224 | &objfile->per_bfd->storage_obstack, |
224c3ddb | 22225 | actual_name, actual_name_len - die_name_len - 2); |
abc72ce4 DE |
22226 | } |
22227 | } | |
22228 | xfree (actual_name); | |
22229 | return name; | |
22230 | } | |
22231 | } | |
22232 | } | |
22233 | ||
22234 | return NULL; | |
22235 | } | |
22236 | ||
96408a79 SA |
22237 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
22238 | prefix part in such case. See | |
22239 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
22240 | ||
a121b7c1 | 22241 | static const char * |
96408a79 SA |
22242 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) |
22243 | { | |
22244 | struct attribute *attr; | |
e6a959d6 | 22245 | const char *base; |
96408a79 SA |
22246 | |
22247 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
22248 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
22249 | return NULL; | |
22250 | ||
7d45c7c3 | 22251 | if (dwarf2_string_attr (die, DW_AT_name, cu) != NULL) |
96408a79 SA |
22252 | return NULL; |
22253 | ||
73b9be8b | 22254 | attr = dw2_linkage_name_attr (die, cu); |
96408a79 SA |
22255 | if (attr == NULL || DW_STRING (attr) == NULL) |
22256 | return NULL; | |
22257 | ||
22258 | /* dwarf2_name had to be already called. */ | |
22259 | gdb_assert (DW_STRING_IS_CANONICAL (attr)); | |
22260 | ||
22261 | /* Strip the base name, keep any leading namespaces/classes. */ | |
22262 | base = strrchr (DW_STRING (attr), ':'); | |
22263 | if (base == NULL || base == DW_STRING (attr) || base[-1] != ':') | |
22264 | return ""; | |
22265 | ||
518817b3 | 22266 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e3b94546 | 22267 | return (char *) obstack_copy0 (&objfile->per_bfd->storage_obstack, |
224c3ddb SM |
22268 | DW_STRING (attr), |
22269 | &base[-1] - DW_STRING (attr)); | |
96408a79 SA |
22270 | } |
22271 | ||
fdde2d81 | 22272 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 22273 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 22274 | |
0114d602 DJ |
22275 | For example, if we're within the method foo() in the following |
22276 | code: | |
22277 | ||
22278 | namespace N { | |
22279 | class C { | |
22280 | void foo () { | |
22281 | } | |
22282 | }; | |
22283 | } | |
22284 | ||
22285 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 22286 | |
0d5cff50 | 22287 | static const char * |
e142c38c | 22288 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 22289 | { |
518817b3 SM |
22290 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22291 | = cu->per_cu->dwarf2_per_objfile; | |
0114d602 DJ |
22292 | struct die_info *parent, *spec_die; |
22293 | struct dwarf2_cu *spec_cu; | |
22294 | struct type *parent_type; | |
a121b7c1 | 22295 | const char *retval; |
63d06c5c | 22296 | |
9c37b5ae | 22297 | if (cu->language != language_cplus |
c44af4eb TT |
22298 | && cu->language != language_fortran && cu->language != language_d |
22299 | && cu->language != language_rust) | |
0114d602 DJ |
22300 | return ""; |
22301 | ||
96408a79 SA |
22302 | retval = anonymous_struct_prefix (die, cu); |
22303 | if (retval) | |
22304 | return retval; | |
22305 | ||
0114d602 DJ |
22306 | /* We have to be careful in the presence of DW_AT_specification. |
22307 | For example, with GCC 3.4, given the code | |
22308 | ||
22309 | namespace N { | |
22310 | void foo() { | |
22311 | // Definition of N::foo. | |
22312 | } | |
22313 | } | |
22314 | ||
22315 | then we'll have a tree of DIEs like this: | |
22316 | ||
22317 | 1: DW_TAG_compile_unit | |
22318 | 2: DW_TAG_namespace // N | |
22319 | 3: DW_TAG_subprogram // declaration of N::foo | |
22320 | 4: DW_TAG_subprogram // definition of N::foo | |
22321 | DW_AT_specification // refers to die #3 | |
22322 | ||
22323 | Thus, when processing die #4, we have to pretend that we're in | |
22324 | the context of its DW_AT_specification, namely the contex of die | |
22325 | #3. */ | |
22326 | spec_cu = cu; | |
22327 | spec_die = die_specification (die, &spec_cu); | |
22328 | if (spec_die == NULL) | |
22329 | parent = die->parent; | |
22330 | else | |
63d06c5c | 22331 | { |
0114d602 DJ |
22332 | parent = spec_die->parent; |
22333 | cu = spec_cu; | |
63d06c5c | 22334 | } |
0114d602 DJ |
22335 | |
22336 | if (parent == NULL) | |
22337 | return ""; | |
98bfdba5 PA |
22338 | else if (parent->building_fullname) |
22339 | { | |
22340 | const char *name; | |
22341 | const char *parent_name; | |
22342 | ||
22343 | /* It has been seen on RealView 2.2 built binaries, | |
22344 | DW_TAG_template_type_param types actually _defined_ as | |
22345 | children of the parent class: | |
22346 | ||
22347 | enum E {}; | |
22348 | template class <class Enum> Class{}; | |
22349 | Class<enum E> class_e; | |
22350 | ||
22351 | 1: DW_TAG_class_type (Class) | |
22352 | 2: DW_TAG_enumeration_type (E) | |
22353 | 3: DW_TAG_enumerator (enum1:0) | |
22354 | 3: DW_TAG_enumerator (enum2:1) | |
22355 | ... | |
22356 | 2: DW_TAG_template_type_param | |
22357 | DW_AT_type DW_FORM_ref_udata (E) | |
22358 | ||
22359 | Besides being broken debug info, it can put GDB into an | |
22360 | infinite loop. Consider: | |
22361 | ||
22362 | When we're building the full name for Class<E>, we'll start | |
22363 | at Class, and go look over its template type parameters, | |
22364 | finding E. We'll then try to build the full name of E, and | |
22365 | reach here. We're now trying to build the full name of E, | |
22366 | and look over the parent DIE for containing scope. In the | |
22367 | broken case, if we followed the parent DIE of E, we'd again | |
22368 | find Class, and once again go look at its template type | |
22369 | arguments, etc., etc. Simply don't consider such parent die | |
22370 | as source-level parent of this die (it can't be, the language | |
22371 | doesn't allow it), and break the loop here. */ | |
22372 | name = dwarf2_name (die, cu); | |
22373 | parent_name = dwarf2_name (parent, cu); | |
b98664d3 | 22374 | complaint (_("template param type '%s' defined within parent '%s'"), |
98bfdba5 PA |
22375 | name ? name : "<unknown>", |
22376 | parent_name ? parent_name : "<unknown>"); | |
22377 | return ""; | |
22378 | } | |
63d06c5c | 22379 | else |
0114d602 DJ |
22380 | switch (parent->tag) |
22381 | { | |
63d06c5c | 22382 | case DW_TAG_namespace: |
0114d602 | 22383 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
22384 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
22385 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
22386 | Work around this problem here. */ | |
22387 | if (cu->language == language_cplus | |
e86ca25f | 22388 | && strcmp (TYPE_NAME (parent_type), "::") == 0) |
acebe513 | 22389 | return ""; |
0114d602 | 22390 | /* We give a name to even anonymous namespaces. */ |
e86ca25f | 22391 | return TYPE_NAME (parent_type); |
63d06c5c | 22392 | case DW_TAG_class_type: |
680b30c7 | 22393 | case DW_TAG_interface_type: |
63d06c5c | 22394 | case DW_TAG_structure_type: |
0114d602 | 22395 | case DW_TAG_union_type: |
f55ee35c | 22396 | case DW_TAG_module: |
0114d602 | 22397 | parent_type = read_type_die (parent, cu); |
e86ca25f TT |
22398 | if (TYPE_NAME (parent_type) != NULL) |
22399 | return TYPE_NAME (parent_type); | |
0114d602 DJ |
22400 | else |
22401 | /* An anonymous structure is only allowed non-static data | |
22402 | members; no typedefs, no member functions, et cetera. | |
22403 | So it does not need a prefix. */ | |
22404 | return ""; | |
abc72ce4 | 22405 | case DW_TAG_compile_unit: |
95554aad | 22406 | case DW_TAG_partial_unit: |
abc72ce4 DE |
22407 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
22408 | if (cu->language == language_cplus | |
8b70b953 | 22409 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
22410 | && die->child != NULL |
22411 | && (die->tag == DW_TAG_class_type | |
22412 | || die->tag == DW_TAG_structure_type | |
22413 | || die->tag == DW_TAG_union_type)) | |
22414 | { | |
22415 | char *name = guess_full_die_structure_name (die, cu); | |
22416 | if (name != NULL) | |
22417 | return name; | |
22418 | } | |
22419 | return ""; | |
3d567982 TT |
22420 | case DW_TAG_enumeration_type: |
22421 | parent_type = read_type_die (parent, cu); | |
22422 | if (TYPE_DECLARED_CLASS (parent_type)) | |
22423 | { | |
e86ca25f TT |
22424 | if (TYPE_NAME (parent_type) != NULL) |
22425 | return TYPE_NAME (parent_type); | |
3d567982 TT |
22426 | return ""; |
22427 | } | |
22428 | /* Fall through. */ | |
63d06c5c | 22429 | default: |
8176b9b8 | 22430 | return determine_prefix (parent, cu); |
63d06c5c | 22431 | } |
63d06c5c DC |
22432 | } |
22433 | ||
3e43a32a MS |
22434 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
22435 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
22436 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
22437 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
22438 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 22439 | |
f55ee35c | 22440 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
22441 | |
22442 | static char * | |
f55ee35c JK |
22443 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
22444 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 22445 | { |
f55ee35c | 22446 | const char *lead = ""; |
5c315b68 | 22447 | const char *sep; |
63d06c5c | 22448 | |
3e43a32a MS |
22449 | if (suffix == NULL || suffix[0] == '\0' |
22450 | || prefix == NULL || prefix[0] == '\0') | |
987504bb | 22451 | sep = ""; |
45280282 IB |
22452 | else if (cu->language == language_d) |
22453 | { | |
22454 | /* For D, the 'main' function could be defined in any module, but it | |
22455 | should never be prefixed. */ | |
22456 | if (strcmp (suffix, "D main") == 0) | |
22457 | { | |
22458 | prefix = ""; | |
22459 | sep = ""; | |
22460 | } | |
22461 | else | |
22462 | sep = "."; | |
22463 | } | |
f55ee35c JK |
22464 | else if (cu->language == language_fortran && physname) |
22465 | { | |
22466 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
22467 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
22468 | ||
22469 | lead = "__"; | |
22470 | sep = "_MOD_"; | |
22471 | } | |
987504bb JJ |
22472 | else |
22473 | sep = "::"; | |
63d06c5c | 22474 | |
6dd47d34 DE |
22475 | if (prefix == NULL) |
22476 | prefix = ""; | |
22477 | if (suffix == NULL) | |
22478 | suffix = ""; | |
22479 | ||
987504bb JJ |
22480 | if (obs == NULL) |
22481 | { | |
3e43a32a | 22482 | char *retval |
224c3ddb SM |
22483 | = ((char *) |
22484 | xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1)); | |
9a619af0 | 22485 | |
f55ee35c JK |
22486 | strcpy (retval, lead); |
22487 | strcat (retval, prefix); | |
6dd47d34 DE |
22488 | strcat (retval, sep); |
22489 | strcat (retval, suffix); | |
63d06c5c DC |
22490 | return retval; |
22491 | } | |
987504bb JJ |
22492 | else |
22493 | { | |
22494 | /* We have an obstack. */ | |
f55ee35c | 22495 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 22496 | } |
63d06c5c DC |
22497 | } |
22498 | ||
c906108c SS |
22499 | /* Return sibling of die, NULL if no sibling. */ |
22500 | ||
f9aca02d | 22501 | static struct die_info * |
fba45db2 | 22502 | sibling_die (struct die_info *die) |
c906108c | 22503 | { |
639d11d3 | 22504 | return die->sibling; |
c906108c SS |
22505 | } |
22506 | ||
71c25dea TT |
22507 | /* Get name of a die, return NULL if not found. */ |
22508 | ||
15d034d0 TT |
22509 | static const char * |
22510 | dwarf2_canonicalize_name (const char *name, struct dwarf2_cu *cu, | |
71c25dea TT |
22511 | struct obstack *obstack) |
22512 | { | |
22513 | if (name && cu->language == language_cplus) | |
22514 | { | |
2f408ecb | 22515 | std::string canon_name = cp_canonicalize_string (name); |
71c25dea | 22516 | |
2f408ecb | 22517 | if (!canon_name.empty ()) |
71c25dea | 22518 | { |
2f408ecb PA |
22519 | if (canon_name != name) |
22520 | name = (const char *) obstack_copy0 (obstack, | |
22521 | canon_name.c_str (), | |
22522 | canon_name.length ()); | |
71c25dea TT |
22523 | } |
22524 | } | |
22525 | ||
22526 | return name; | |
c906108c SS |
22527 | } |
22528 | ||
96553a0c DE |
22529 | /* Get name of a die, return NULL if not found. |
22530 | Anonymous namespaces are converted to their magic string. */ | |
9219021c | 22531 | |
15d034d0 | 22532 | static const char * |
e142c38c | 22533 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
22534 | { |
22535 | struct attribute *attr; | |
518817b3 | 22536 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
9219021c | 22537 | |
e142c38c | 22538 | attr = dwarf2_attr (die, DW_AT_name, cu); |
53832f31 | 22539 | if ((!attr || !DW_STRING (attr)) |
96553a0c | 22540 | && die->tag != DW_TAG_namespace |
53832f31 TT |
22541 | && die->tag != DW_TAG_class_type |
22542 | && die->tag != DW_TAG_interface_type | |
22543 | && die->tag != DW_TAG_structure_type | |
22544 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
22545 | return NULL; |
22546 | ||
22547 | switch (die->tag) | |
22548 | { | |
22549 | case DW_TAG_compile_unit: | |
95554aad | 22550 | case DW_TAG_partial_unit: |
71c25dea TT |
22551 | /* Compilation units have a DW_AT_name that is a filename, not |
22552 | a source language identifier. */ | |
22553 | case DW_TAG_enumeration_type: | |
22554 | case DW_TAG_enumerator: | |
22555 | /* These tags always have simple identifiers already; no need | |
22556 | to canonicalize them. */ | |
22557 | return DW_STRING (attr); | |
907af001 | 22558 | |
96553a0c DE |
22559 | case DW_TAG_namespace: |
22560 | if (attr != NULL && DW_STRING (attr) != NULL) | |
22561 | return DW_STRING (attr); | |
22562 | return CP_ANONYMOUS_NAMESPACE_STR; | |
22563 | ||
907af001 UW |
22564 | case DW_TAG_class_type: |
22565 | case DW_TAG_interface_type: | |
22566 | case DW_TAG_structure_type: | |
22567 | case DW_TAG_union_type: | |
22568 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
22569 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
22570 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
22571 | and GCC 4.4. We work around this problem by ignoring these. */ | |
53832f31 | 22572 | if (attr && DW_STRING (attr) |
61012eef GB |
22573 | && (startswith (DW_STRING (attr), "._") |
22574 | || startswith (DW_STRING (attr), "<anonymous"))) | |
907af001 | 22575 | return NULL; |
53832f31 TT |
22576 | |
22577 | /* GCC might emit a nameless typedef that has a linkage name. See | |
22578 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
22579 | if (!attr || DW_STRING (attr) == NULL) | |
22580 | { | |
df5c6c50 | 22581 | char *demangled = NULL; |
53832f31 | 22582 | |
73b9be8b | 22583 | attr = dw2_linkage_name_attr (die, cu); |
53832f31 TT |
22584 | if (attr == NULL || DW_STRING (attr) == NULL) |
22585 | return NULL; | |
22586 | ||
df5c6c50 JK |
22587 | /* Avoid demangling DW_STRING (attr) the second time on a second |
22588 | call for the same DIE. */ | |
22589 | if (!DW_STRING_IS_CANONICAL (attr)) | |
8de20a37 | 22590 | demangled = gdb_demangle (DW_STRING (attr), DMGL_TYPES); |
53832f31 TT |
22591 | |
22592 | if (demangled) | |
22593 | { | |
e6a959d6 | 22594 | const char *base; |
96408a79 | 22595 | |
53832f31 | 22596 | /* FIXME: we already did this for the partial symbol... */ |
34a68019 | 22597 | DW_STRING (attr) |
224c3ddb | 22598 | = ((const char *) |
e3b94546 | 22599 | obstack_copy0 (&objfile->per_bfd->storage_obstack, |
224c3ddb | 22600 | demangled, strlen (demangled))); |
53832f31 TT |
22601 | DW_STRING_IS_CANONICAL (attr) = 1; |
22602 | xfree (demangled); | |
96408a79 SA |
22603 | |
22604 | /* Strip any leading namespaces/classes, keep only the base name. | |
22605 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
22606 | base = strrchr (DW_STRING (attr), ':'); | |
22607 | if (base && base > DW_STRING (attr) && base[-1] == ':') | |
22608 | return &base[1]; | |
22609 | else | |
22610 | return DW_STRING (attr); | |
53832f31 TT |
22611 | } |
22612 | } | |
907af001 UW |
22613 | break; |
22614 | ||
71c25dea | 22615 | default: |
907af001 UW |
22616 | break; |
22617 | } | |
22618 | ||
22619 | if (!DW_STRING_IS_CANONICAL (attr)) | |
22620 | { | |
22621 | DW_STRING (attr) | |
22622 | = dwarf2_canonicalize_name (DW_STRING (attr), cu, | |
e3b94546 | 22623 | &objfile->per_bfd->storage_obstack); |
907af001 | 22624 | DW_STRING_IS_CANONICAL (attr) = 1; |
71c25dea | 22625 | } |
907af001 | 22626 | return DW_STRING (attr); |
9219021c DC |
22627 | } |
22628 | ||
22629 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
22630 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
22631 | containing the return value on output. */ | |
9219021c DC |
22632 | |
22633 | static struct die_info * | |
f2f0e013 | 22634 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
22635 | { |
22636 | struct attribute *attr; | |
9219021c | 22637 | |
f2f0e013 | 22638 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
22639 | if (attr == NULL) |
22640 | return NULL; | |
22641 | ||
f2f0e013 | 22642 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
22643 | } |
22644 | ||
c906108c SS |
22645 | /* Convert a DIE tag into its string name. */ |
22646 | ||
f39c6ffd | 22647 | static const char * |
aa1ee363 | 22648 | dwarf_tag_name (unsigned tag) |
c906108c | 22649 | { |
f39c6ffd TT |
22650 | const char *name = get_DW_TAG_name (tag); |
22651 | ||
22652 | if (name == NULL) | |
22653 | return "DW_TAG_<unknown>"; | |
22654 | ||
22655 | return name; | |
c906108c SS |
22656 | } |
22657 | ||
22658 | /* Convert a DWARF attribute code into its string name. */ | |
22659 | ||
f39c6ffd | 22660 | static const char * |
aa1ee363 | 22661 | dwarf_attr_name (unsigned attr) |
c906108c | 22662 | { |
f39c6ffd TT |
22663 | const char *name; |
22664 | ||
c764a876 | 22665 | #ifdef MIPS /* collides with DW_AT_HP_block_index */ |
f39c6ffd TT |
22666 | if (attr == DW_AT_MIPS_fde) |
22667 | return "DW_AT_MIPS_fde"; | |
22668 | #else | |
22669 | if (attr == DW_AT_HP_block_index) | |
22670 | return "DW_AT_HP_block_index"; | |
c764a876 | 22671 | #endif |
f39c6ffd TT |
22672 | |
22673 | name = get_DW_AT_name (attr); | |
22674 | ||
22675 | if (name == NULL) | |
22676 | return "DW_AT_<unknown>"; | |
22677 | ||
22678 | return name; | |
c906108c SS |
22679 | } |
22680 | ||
22681 | /* Convert a DWARF value form code into its string name. */ | |
22682 | ||
f39c6ffd | 22683 | static const char * |
aa1ee363 | 22684 | dwarf_form_name (unsigned form) |
c906108c | 22685 | { |
f39c6ffd TT |
22686 | const char *name = get_DW_FORM_name (form); |
22687 | ||
22688 | if (name == NULL) | |
22689 | return "DW_FORM_<unknown>"; | |
22690 | ||
22691 | return name; | |
c906108c SS |
22692 | } |
22693 | ||
a121b7c1 | 22694 | static const char * |
fba45db2 | 22695 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
22696 | { |
22697 | if (mybool) | |
22698 | return "TRUE"; | |
22699 | else | |
22700 | return "FALSE"; | |
22701 | } | |
22702 | ||
22703 | /* Convert a DWARF type code into its string name. */ | |
22704 | ||
f39c6ffd | 22705 | static const char * |
aa1ee363 | 22706 | dwarf_type_encoding_name (unsigned enc) |
c906108c | 22707 | { |
f39c6ffd | 22708 | const char *name = get_DW_ATE_name (enc); |
c906108c | 22709 | |
f39c6ffd TT |
22710 | if (name == NULL) |
22711 | return "DW_ATE_<unknown>"; | |
c906108c | 22712 | |
f39c6ffd | 22713 | return name; |
c906108c | 22714 | } |
c906108c | 22715 | |
f9aca02d | 22716 | static void |
d97bc12b | 22717 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
22718 | { |
22719 | unsigned int i; | |
22720 | ||
d97bc12b | 22721 | print_spaces (indent, f); |
9d8780f0 | 22722 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset %s)\n", |
9c541725 | 22723 | dwarf_tag_name (die->tag), die->abbrev, |
9d8780f0 | 22724 | sect_offset_str (die->sect_off)); |
d97bc12b DE |
22725 | |
22726 | if (die->parent != NULL) | |
22727 | { | |
22728 | print_spaces (indent, f); | |
9d8780f0 SM |
22729 | fprintf_unfiltered (f, " parent at offset: %s\n", |
22730 | sect_offset_str (die->parent->sect_off)); | |
d97bc12b DE |
22731 | } |
22732 | ||
22733 | print_spaces (indent, f); | |
22734 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 22735 | dwarf_bool_name (die->child != NULL)); |
c906108c | 22736 | |
d97bc12b DE |
22737 | print_spaces (indent, f); |
22738 | fprintf_unfiltered (f, " attributes:\n"); | |
22739 | ||
c906108c SS |
22740 | for (i = 0; i < die->num_attrs; ++i) |
22741 | { | |
d97bc12b DE |
22742 | print_spaces (indent, f); |
22743 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
22744 | dwarf_attr_name (die->attrs[i].name), |
22745 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 22746 | |
c906108c SS |
22747 | switch (die->attrs[i].form) |
22748 | { | |
c906108c | 22749 | case DW_FORM_addr: |
3019eac3 | 22750 | case DW_FORM_GNU_addr_index: |
d97bc12b | 22751 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 22752 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
22753 | break; |
22754 | case DW_FORM_block2: | |
22755 | case DW_FORM_block4: | |
22756 | case DW_FORM_block: | |
22757 | case DW_FORM_block1: | |
56eb65bd SP |
22758 | fprintf_unfiltered (f, "block: size %s", |
22759 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
c906108c | 22760 | break; |
2dc7f7b3 | 22761 | case DW_FORM_exprloc: |
56eb65bd SP |
22762 | fprintf_unfiltered (f, "expression: size %s", |
22763 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
2dc7f7b3 | 22764 | break; |
0224619f JK |
22765 | case DW_FORM_data16: |
22766 | fprintf_unfiltered (f, "constant of 16 bytes"); | |
22767 | break; | |
4568ecf9 DE |
22768 | case DW_FORM_ref_addr: |
22769 | fprintf_unfiltered (f, "ref address: "); | |
22770 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
22771 | break; | |
36586728 TT |
22772 | case DW_FORM_GNU_ref_alt: |
22773 | fprintf_unfiltered (f, "alt ref address: "); | |
22774 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
22775 | break; | |
10b3939b DJ |
22776 | case DW_FORM_ref1: |
22777 | case DW_FORM_ref2: | |
22778 | case DW_FORM_ref4: | |
4568ecf9 DE |
22779 | case DW_FORM_ref8: |
22780 | case DW_FORM_ref_udata: | |
d97bc12b | 22781 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
4568ecf9 | 22782 | (long) (DW_UNSND (&die->attrs[i]))); |
10b3939b | 22783 | break; |
c906108c SS |
22784 | case DW_FORM_data1: |
22785 | case DW_FORM_data2: | |
22786 | case DW_FORM_data4: | |
ce5d95e1 | 22787 | case DW_FORM_data8: |
c906108c SS |
22788 | case DW_FORM_udata: |
22789 | case DW_FORM_sdata: | |
43bbcdc2 PH |
22790 | fprintf_unfiltered (f, "constant: %s", |
22791 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 22792 | break; |
2dc7f7b3 TT |
22793 | case DW_FORM_sec_offset: |
22794 | fprintf_unfiltered (f, "section offset: %s", | |
22795 | pulongest (DW_UNSND (&die->attrs[i]))); | |
22796 | break; | |
55f1336d | 22797 | case DW_FORM_ref_sig8: |
ac9ec31b DE |
22798 | fprintf_unfiltered (f, "signature: %s", |
22799 | hex_string (DW_SIGNATURE (&die->attrs[i]))); | |
348e048f | 22800 | break; |
c906108c | 22801 | case DW_FORM_string: |
4bdf3d34 | 22802 | case DW_FORM_strp: |
43988095 | 22803 | case DW_FORM_line_strp: |
3019eac3 | 22804 | case DW_FORM_GNU_str_index: |
36586728 | 22805 | case DW_FORM_GNU_strp_alt: |
8285870a | 22806 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 22807 | DW_STRING (&die->attrs[i]) |
8285870a JK |
22808 | ? DW_STRING (&die->attrs[i]) : "", |
22809 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
22810 | break; |
22811 | case DW_FORM_flag: | |
22812 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 22813 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 22814 | else |
d97bc12b | 22815 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 22816 | break; |
2dc7f7b3 TT |
22817 | case DW_FORM_flag_present: |
22818 | fprintf_unfiltered (f, "flag: TRUE"); | |
22819 | break; | |
a8329558 | 22820 | case DW_FORM_indirect: |
0963b4bd MS |
22821 | /* The reader will have reduced the indirect form to |
22822 | the "base form" so this form should not occur. */ | |
3e43a32a MS |
22823 | fprintf_unfiltered (f, |
22824 | "unexpected attribute form: DW_FORM_indirect"); | |
a8329558 | 22825 | break; |
663c44ac JK |
22826 | case DW_FORM_implicit_const: |
22827 | fprintf_unfiltered (f, "constant: %s", | |
22828 | plongest (DW_SND (&die->attrs[i]))); | |
22829 | break; | |
c906108c | 22830 | default: |
d97bc12b | 22831 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 22832 | die->attrs[i].form); |
d97bc12b | 22833 | break; |
c906108c | 22834 | } |
d97bc12b | 22835 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
22836 | } |
22837 | } | |
22838 | ||
f9aca02d | 22839 | static void |
d97bc12b | 22840 | dump_die_for_error (struct die_info *die) |
c906108c | 22841 | { |
d97bc12b DE |
22842 | dump_die_shallow (gdb_stderr, 0, die); |
22843 | } | |
22844 | ||
22845 | static void | |
22846 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
22847 | { | |
22848 | int indent = level * 4; | |
22849 | ||
22850 | gdb_assert (die != NULL); | |
22851 | ||
22852 | if (level >= max_level) | |
22853 | return; | |
22854 | ||
22855 | dump_die_shallow (f, indent, die); | |
22856 | ||
22857 | if (die->child != NULL) | |
c906108c | 22858 | { |
d97bc12b DE |
22859 | print_spaces (indent, f); |
22860 | fprintf_unfiltered (f, " Children:"); | |
22861 | if (level + 1 < max_level) | |
22862 | { | |
22863 | fprintf_unfiltered (f, "\n"); | |
22864 | dump_die_1 (f, level + 1, max_level, die->child); | |
22865 | } | |
22866 | else | |
22867 | { | |
3e43a32a MS |
22868 | fprintf_unfiltered (f, |
22869 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
22870 | } |
22871 | } | |
22872 | ||
22873 | if (die->sibling != NULL && level > 0) | |
22874 | { | |
22875 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
22876 | } |
22877 | } | |
22878 | ||
d97bc12b DE |
22879 | /* This is called from the pdie macro in gdbinit.in. |
22880 | It's not static so gcc will keep a copy callable from gdb. */ | |
22881 | ||
22882 | void | |
22883 | dump_die (struct die_info *die, int max_level) | |
22884 | { | |
22885 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
22886 | } | |
22887 | ||
f9aca02d | 22888 | static void |
51545339 | 22889 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22890 | { |
51545339 | 22891 | void **slot; |
c906108c | 22892 | |
9c541725 PA |
22893 | slot = htab_find_slot_with_hash (cu->die_hash, die, |
22894 | to_underlying (die->sect_off), | |
b64f50a1 | 22895 | INSERT); |
51545339 DJ |
22896 | |
22897 | *slot = die; | |
c906108c SS |
22898 | } |
22899 | ||
b64f50a1 JK |
22900 | /* Return DIE offset of ATTR. Return 0 with complaint if ATTR is not of the |
22901 | required kind. */ | |
22902 | ||
22903 | static sect_offset | |
ff39bb5e | 22904 | dwarf2_get_ref_die_offset (const struct attribute *attr) |
93311388 | 22905 | { |
7771576e | 22906 | if (attr_form_is_ref (attr)) |
9c541725 | 22907 | return (sect_offset) DW_UNSND (attr); |
93311388 | 22908 | |
b98664d3 | 22909 | complaint (_("unsupported die ref attribute form: '%s'"), |
93311388 | 22910 | dwarf_form_name (attr->form)); |
9c541725 | 22911 | return {}; |
c906108c SS |
22912 | } |
22913 | ||
43bbcdc2 PH |
22914 | /* Return the constant value held by ATTR. Return DEFAULT_VALUE if |
22915 | * the value held by the attribute is not constant. */ | |
a02abb62 | 22916 | |
43bbcdc2 | 22917 | static LONGEST |
ff39bb5e | 22918 | dwarf2_get_attr_constant_value (const struct attribute *attr, int default_value) |
a02abb62 | 22919 | { |
663c44ac | 22920 | if (attr->form == DW_FORM_sdata || attr->form == DW_FORM_implicit_const) |
a02abb62 JB |
22921 | return DW_SND (attr); |
22922 | else if (attr->form == DW_FORM_udata | |
22923 | || attr->form == DW_FORM_data1 | |
22924 | || attr->form == DW_FORM_data2 | |
22925 | || attr->form == DW_FORM_data4 | |
22926 | || attr->form == DW_FORM_data8) | |
22927 | return DW_UNSND (attr); | |
22928 | else | |
22929 | { | |
0224619f | 22930 | /* For DW_FORM_data16 see attr_form_is_constant. */ |
b98664d3 | 22931 | complaint (_("Attribute value is not a constant (%s)"), |
a02abb62 JB |
22932 | dwarf_form_name (attr->form)); |
22933 | return default_value; | |
22934 | } | |
22935 | } | |
22936 | ||
348e048f DE |
22937 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
22938 | On entry *REF_CU is the CU of SRC_DIE. | |
22939 | On exit *REF_CU is the CU of the result. */ | |
22940 | ||
22941 | static struct die_info * | |
ff39bb5e | 22942 | follow_die_ref_or_sig (struct die_info *src_die, const struct attribute *attr, |
348e048f DE |
22943 | struct dwarf2_cu **ref_cu) |
22944 | { | |
22945 | struct die_info *die; | |
22946 | ||
7771576e | 22947 | if (attr_form_is_ref (attr)) |
348e048f | 22948 | die = follow_die_ref (src_die, attr, ref_cu); |
55f1336d | 22949 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
22950 | die = follow_die_sig (src_die, attr, ref_cu); |
22951 | else | |
22952 | { | |
22953 | dump_die_for_error (src_die); | |
22954 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
518817b3 | 22955 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
348e048f DE |
22956 | } |
22957 | ||
22958 | return die; | |
03dd20cc DJ |
22959 | } |
22960 | ||
5c631832 | 22961 | /* Follow reference OFFSET. |
673bfd45 DE |
22962 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
22963 | On exit *REF_CU is the CU of the result. | |
22964 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 22965 | |
f9aca02d | 22966 | static struct die_info * |
9c541725 | 22967 | follow_die_offset (sect_offset sect_off, int offset_in_dwz, |
36586728 | 22968 | struct dwarf2_cu **ref_cu) |
c906108c | 22969 | { |
10b3939b | 22970 | struct die_info temp_die; |
f2f0e013 | 22971 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
518817b3 SM |
22972 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22973 | = cu->per_cu->dwarf2_per_objfile; | |
10b3939b | 22974 | |
348e048f DE |
22975 | gdb_assert (cu->per_cu != NULL); |
22976 | ||
98bfdba5 PA |
22977 | target_cu = cu; |
22978 | ||
3019eac3 | 22979 | if (cu->per_cu->is_debug_types) |
348e048f DE |
22980 | { |
22981 | /* .debug_types CUs cannot reference anything outside their CU. | |
22982 | If they need to, they have to reference a signatured type via | |
55f1336d | 22983 | DW_FORM_ref_sig8. */ |
9c541725 | 22984 | if (!offset_in_cu_p (&cu->header, sect_off)) |
5c631832 | 22985 | return NULL; |
348e048f | 22986 | } |
36586728 | 22987 | else if (offset_in_dwz != cu->per_cu->is_dwz |
9c541725 | 22988 | || !offset_in_cu_p (&cu->header, sect_off)) |
10b3939b DJ |
22989 | { |
22990 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 22991 | |
9c541725 | 22992 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
ed2dc618 | 22993 | dwarf2_per_objfile); |
03dd20cc DJ |
22994 | |
22995 | /* If necessary, add it to the queue and load its DIEs. */ | |
95554aad | 22996 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
58f0c718 | 22997 | load_full_comp_unit (per_cu, false, cu->language); |
03dd20cc | 22998 | |
10b3939b DJ |
22999 | target_cu = per_cu->cu; |
23000 | } | |
98bfdba5 PA |
23001 | else if (cu->dies == NULL) |
23002 | { | |
23003 | /* We're loading full DIEs during partial symbol reading. */ | |
23004 | gdb_assert (dwarf2_per_objfile->reading_partial_symbols); | |
58f0c718 | 23005 | load_full_comp_unit (cu->per_cu, false, language_minimal); |
98bfdba5 | 23006 | } |
c906108c | 23007 | |
f2f0e013 | 23008 | *ref_cu = target_cu; |
9c541725 | 23009 | temp_die.sect_off = sect_off; |
9a3c8263 | 23010 | return (struct die_info *) htab_find_with_hash (target_cu->die_hash, |
9c541725 PA |
23011 | &temp_die, |
23012 | to_underlying (sect_off)); | |
5c631832 | 23013 | } |
10b3939b | 23014 | |
5c631832 JK |
23015 | /* Follow reference attribute ATTR of SRC_DIE. |
23016 | On entry *REF_CU is the CU of SRC_DIE. | |
23017 | On exit *REF_CU is the CU of the result. */ | |
23018 | ||
23019 | static struct die_info * | |
ff39bb5e | 23020 | follow_die_ref (struct die_info *src_die, const struct attribute *attr, |
5c631832 JK |
23021 | struct dwarf2_cu **ref_cu) |
23022 | { | |
9c541725 | 23023 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
5c631832 JK |
23024 | struct dwarf2_cu *cu = *ref_cu; |
23025 | struct die_info *die; | |
23026 | ||
9c541725 | 23027 | die = follow_die_offset (sect_off, |
36586728 TT |
23028 | (attr->form == DW_FORM_GNU_ref_alt |
23029 | || cu->per_cu->is_dwz), | |
23030 | ref_cu); | |
5c631832 | 23031 | if (!die) |
9d8780f0 SM |
23032 | error (_("Dwarf Error: Cannot find DIE at %s referenced from DIE " |
23033 | "at %s [in module %s]"), | |
23034 | sect_offset_str (sect_off), sect_offset_str (src_die->sect_off), | |
518817b3 | 23035 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
348e048f | 23036 | |
5c631832 JK |
23037 | return die; |
23038 | } | |
23039 | ||
9c541725 | 23040 | /* Return DWARF block referenced by DW_AT_location of DIE at SECT_OFF at PER_CU. |
d83e736b | 23041 | Returned value is intended for DW_OP_call*. Returned |
e3b94546 SM |
23042 | dwarf2_locexpr_baton->data has lifetime of |
23043 | PER_CU->DWARF2_PER_OBJFILE->OBJFILE. */ | |
5c631832 JK |
23044 | |
23045 | struct dwarf2_locexpr_baton | |
9c541725 | 23046 | dwarf2_fetch_die_loc_sect_off (sect_offset sect_off, |
8b9737bf TT |
23047 | struct dwarf2_per_cu_data *per_cu, |
23048 | CORE_ADDR (*get_frame_pc) (void *baton), | |
e4a62c65 | 23049 | void *baton, bool resolve_abstract_p) |
5c631832 | 23050 | { |
918dd910 | 23051 | struct dwarf2_cu *cu; |
5c631832 JK |
23052 | struct die_info *die; |
23053 | struct attribute *attr; | |
23054 | struct dwarf2_locexpr_baton retval; | |
12359b5e SM |
23055 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
23056 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8cf6f0b1 | 23057 | |
918dd910 | 23058 | if (per_cu->cu == NULL) |
58f0c718 | 23059 | load_cu (per_cu, false); |
918dd910 | 23060 | cu = per_cu->cu; |
cc12ce38 DE |
23061 | if (cu == NULL) |
23062 | { | |
23063 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
23064 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
23065 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
23066 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 23067 | } |
918dd910 | 23068 | |
9c541725 | 23069 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
5c631832 | 23070 | if (!die) |
9d8780f0 SM |
23071 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
23072 | sect_offset_str (sect_off), objfile_name (objfile)); | |
5c631832 JK |
23073 | |
23074 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
e4a62c65 TV |
23075 | if (!attr && resolve_abstract_p |
23076 | && (dwarf2_per_objfile->abstract_to_concrete.find (die) | |
23077 | != dwarf2_per_objfile->abstract_to_concrete.end ())) | |
23078 | { | |
23079 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
23080 | ||
23081 | for (const auto &cand : dwarf2_per_objfile->abstract_to_concrete[die]) | |
23082 | { | |
23083 | if (!cand->parent | |
23084 | || cand->parent->tag != DW_TAG_subprogram) | |
23085 | continue; | |
23086 | ||
23087 | CORE_ADDR pc_low, pc_high; | |
23088 | get_scope_pc_bounds (cand->parent, &pc_low, &pc_high, cu); | |
23089 | if (pc_low == ((CORE_ADDR) -1) | |
23090 | || !(pc_low <= pc && pc < pc_high)) | |
23091 | continue; | |
23092 | ||
23093 | die = cand; | |
23094 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
23095 | break; | |
23096 | } | |
23097 | } | |
23098 | ||
5c631832 JK |
23099 | if (!attr) |
23100 | { | |
e103e986 JK |
23101 | /* DWARF: "If there is no such attribute, then there is no effect.". |
23102 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 23103 | |
e103e986 | 23104 | retval.data = NULL; |
5c631832 JK |
23105 | retval.size = 0; |
23106 | } | |
8cf6f0b1 TT |
23107 | else if (attr_form_is_section_offset (attr)) |
23108 | { | |
23109 | struct dwarf2_loclist_baton loclist_baton; | |
23110 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
23111 | size_t size; | |
23112 | ||
23113 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
23114 | ||
23115 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
23116 | &size, pc); | |
23117 | retval.size = size; | |
23118 | } | |
5c631832 JK |
23119 | else |
23120 | { | |
23121 | if (!attr_form_is_block (attr)) | |
9d8780f0 | 23122 | error (_("Dwarf Error: DIE at %s referenced in module %s " |
5c631832 | 23123 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), |
9d8780f0 | 23124 | sect_offset_str (sect_off), objfile_name (objfile)); |
5c631832 JK |
23125 | |
23126 | retval.data = DW_BLOCK (attr)->data; | |
23127 | retval.size = DW_BLOCK (attr)->size; | |
23128 | } | |
23129 | retval.per_cu = cu->per_cu; | |
918dd910 | 23130 | |
ed2dc618 | 23131 | age_cached_comp_units (dwarf2_per_objfile); |
918dd910 | 23132 | |
5c631832 | 23133 | return retval; |
348e048f DE |
23134 | } |
23135 | ||
8b9737bf TT |
23136 | /* Like dwarf2_fetch_die_loc_sect_off, but take a CU |
23137 | offset. */ | |
23138 | ||
23139 | struct dwarf2_locexpr_baton | |
23140 | dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu, | |
23141 | struct dwarf2_per_cu_data *per_cu, | |
23142 | CORE_ADDR (*get_frame_pc) (void *baton), | |
23143 | void *baton) | |
23144 | { | |
9c541725 | 23145 | sect_offset sect_off = per_cu->sect_off + to_underlying (offset_in_cu); |
8b9737bf | 23146 | |
9c541725 | 23147 | return dwarf2_fetch_die_loc_sect_off (sect_off, per_cu, get_frame_pc, baton); |
8b9737bf TT |
23148 | } |
23149 | ||
b6807d98 TT |
23150 | /* Write a constant of a given type as target-ordered bytes into |
23151 | OBSTACK. */ | |
23152 | ||
23153 | static const gdb_byte * | |
23154 | write_constant_as_bytes (struct obstack *obstack, | |
23155 | enum bfd_endian byte_order, | |
23156 | struct type *type, | |
23157 | ULONGEST value, | |
23158 | LONGEST *len) | |
23159 | { | |
23160 | gdb_byte *result; | |
23161 | ||
23162 | *len = TYPE_LENGTH (type); | |
224c3ddb | 23163 | result = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
23164 | store_unsigned_integer (result, *len, byte_order, value); |
23165 | ||
23166 | return result; | |
23167 | } | |
23168 | ||
23169 | /* If the DIE at OFFSET in PER_CU has a DW_AT_const_value, return a | |
23170 | pointer to the constant bytes and set LEN to the length of the | |
23171 | data. If memory is needed, allocate it on OBSTACK. If the DIE | |
23172 | does not have a DW_AT_const_value, return NULL. */ | |
23173 | ||
23174 | const gdb_byte * | |
9c541725 | 23175 | dwarf2_fetch_constant_bytes (sect_offset sect_off, |
b6807d98 TT |
23176 | struct dwarf2_per_cu_data *per_cu, |
23177 | struct obstack *obstack, | |
23178 | LONGEST *len) | |
23179 | { | |
23180 | struct dwarf2_cu *cu; | |
23181 | struct die_info *die; | |
23182 | struct attribute *attr; | |
23183 | const gdb_byte *result = NULL; | |
23184 | struct type *type; | |
23185 | LONGEST value; | |
23186 | enum bfd_endian byte_order; | |
e3b94546 | 23187 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
b6807d98 | 23188 | |
b6807d98 | 23189 | if (per_cu->cu == NULL) |
58f0c718 | 23190 | load_cu (per_cu, false); |
b6807d98 | 23191 | cu = per_cu->cu; |
cc12ce38 DE |
23192 | if (cu == NULL) |
23193 | { | |
23194 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
23195 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
23196 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
23197 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 23198 | } |
b6807d98 | 23199 | |
9c541725 | 23200 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
b6807d98 | 23201 | if (!die) |
9d8780f0 SM |
23202 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
23203 | sect_offset_str (sect_off), objfile_name (objfile)); | |
b6807d98 TT |
23204 | |
23205 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
23206 | if (attr == NULL) | |
23207 | return NULL; | |
23208 | ||
e3b94546 | 23209 | byte_order = (bfd_big_endian (objfile->obfd) |
b6807d98 TT |
23210 | ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); |
23211 | ||
23212 | switch (attr->form) | |
23213 | { | |
23214 | case DW_FORM_addr: | |
23215 | case DW_FORM_GNU_addr_index: | |
23216 | { | |
23217 | gdb_byte *tem; | |
23218 | ||
23219 | *len = cu->header.addr_size; | |
224c3ddb | 23220 | tem = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
23221 | store_unsigned_integer (tem, *len, byte_order, DW_ADDR (attr)); |
23222 | result = tem; | |
23223 | } | |
23224 | break; | |
23225 | case DW_FORM_string: | |
23226 | case DW_FORM_strp: | |
23227 | case DW_FORM_GNU_str_index: | |
23228 | case DW_FORM_GNU_strp_alt: | |
23229 | /* DW_STRING is already allocated on the objfile obstack, point | |
23230 | directly to it. */ | |
23231 | result = (const gdb_byte *) DW_STRING (attr); | |
23232 | *len = strlen (DW_STRING (attr)); | |
23233 | break; | |
23234 | case DW_FORM_block1: | |
23235 | case DW_FORM_block2: | |
23236 | case DW_FORM_block4: | |
23237 | case DW_FORM_block: | |
23238 | case DW_FORM_exprloc: | |
0224619f | 23239 | case DW_FORM_data16: |
b6807d98 TT |
23240 | result = DW_BLOCK (attr)->data; |
23241 | *len = DW_BLOCK (attr)->size; | |
23242 | break; | |
23243 | ||
23244 | /* The DW_AT_const_value attributes are supposed to carry the | |
23245 | symbol's value "represented as it would be on the target | |
23246 | architecture." By the time we get here, it's already been | |
23247 | converted to host endianness, so we just need to sign- or | |
23248 | zero-extend it as appropriate. */ | |
23249 | case DW_FORM_data1: | |
23250 | type = die_type (die, cu); | |
23251 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 8); | |
23252 | if (result == NULL) | |
23253 | result = write_constant_as_bytes (obstack, byte_order, | |
23254 | type, value, len); | |
23255 | break; | |
23256 | case DW_FORM_data2: | |
23257 | type = die_type (die, cu); | |
23258 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 16); | |
23259 | if (result == NULL) | |
23260 | result = write_constant_as_bytes (obstack, byte_order, | |
23261 | type, value, len); | |
23262 | break; | |
23263 | case DW_FORM_data4: | |
23264 | type = die_type (die, cu); | |
23265 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 32); | |
23266 | if (result == NULL) | |
23267 | result = write_constant_as_bytes (obstack, byte_order, | |
23268 | type, value, len); | |
23269 | break; | |
23270 | case DW_FORM_data8: | |
23271 | type = die_type (die, cu); | |
23272 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 64); | |
23273 | if (result == NULL) | |
23274 | result = write_constant_as_bytes (obstack, byte_order, | |
23275 | type, value, len); | |
23276 | break; | |
23277 | ||
23278 | case DW_FORM_sdata: | |
663c44ac | 23279 | case DW_FORM_implicit_const: |
b6807d98 TT |
23280 | type = die_type (die, cu); |
23281 | result = write_constant_as_bytes (obstack, byte_order, | |
23282 | type, DW_SND (attr), len); | |
23283 | break; | |
23284 | ||
23285 | case DW_FORM_udata: | |
23286 | type = die_type (die, cu); | |
23287 | result = write_constant_as_bytes (obstack, byte_order, | |
23288 | type, DW_UNSND (attr), len); | |
23289 | break; | |
23290 | ||
23291 | default: | |
b98664d3 | 23292 | complaint (_("unsupported const value attribute form: '%s'"), |
b6807d98 TT |
23293 | dwarf_form_name (attr->form)); |
23294 | break; | |
23295 | } | |
23296 | ||
23297 | return result; | |
23298 | } | |
23299 | ||
7942e96e AA |
23300 | /* Return the type of the die at OFFSET in PER_CU. Return NULL if no |
23301 | valid type for this die is found. */ | |
23302 | ||
23303 | struct type * | |
9c541725 | 23304 | dwarf2_fetch_die_type_sect_off (sect_offset sect_off, |
7942e96e AA |
23305 | struct dwarf2_per_cu_data *per_cu) |
23306 | { | |
23307 | struct dwarf2_cu *cu; | |
23308 | struct die_info *die; | |
23309 | ||
7942e96e | 23310 | if (per_cu->cu == NULL) |
58f0c718 | 23311 | load_cu (per_cu, false); |
7942e96e AA |
23312 | cu = per_cu->cu; |
23313 | if (!cu) | |
23314 | return NULL; | |
23315 | ||
9c541725 | 23316 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
7942e96e AA |
23317 | if (!die) |
23318 | return NULL; | |
23319 | ||
23320 | return die_type (die, cu); | |
23321 | } | |
23322 | ||
8a9b8146 TT |
23323 | /* Return the type of the DIE at DIE_OFFSET in the CU named by |
23324 | PER_CU. */ | |
23325 | ||
23326 | struct type * | |
b64f50a1 | 23327 | dwarf2_get_die_type (cu_offset die_offset, |
8a9b8146 TT |
23328 | struct dwarf2_per_cu_data *per_cu) |
23329 | { | |
9c541725 | 23330 | sect_offset die_offset_sect = per_cu->sect_off + to_underlying (die_offset); |
b64f50a1 | 23331 | return get_die_type_at_offset (die_offset_sect, per_cu); |
8a9b8146 TT |
23332 | } |
23333 | ||
ac9ec31b | 23334 | /* Follow type unit SIG_TYPE referenced by SRC_DIE. |
348e048f | 23335 | On entry *REF_CU is the CU of SRC_DIE. |
ac9ec31b DE |
23336 | On exit *REF_CU is the CU of the result. |
23337 | Returns NULL if the referenced DIE isn't found. */ | |
348e048f DE |
23338 | |
23339 | static struct die_info * | |
ac9ec31b DE |
23340 | follow_die_sig_1 (struct die_info *src_die, struct signatured_type *sig_type, |
23341 | struct dwarf2_cu **ref_cu) | |
348e048f | 23342 | { |
348e048f | 23343 | struct die_info temp_die; |
348e048f DE |
23344 | struct dwarf2_cu *sig_cu; |
23345 | struct die_info *die; | |
23346 | ||
ac9ec31b DE |
23347 | /* While it might be nice to assert sig_type->type == NULL here, |
23348 | we can get here for DW_AT_imported_declaration where we need | |
23349 | the DIE not the type. */ | |
348e048f DE |
23350 | |
23351 | /* If necessary, add it to the queue and load its DIEs. */ | |
23352 | ||
95554aad | 23353 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, language_minimal)) |
a0f42c21 | 23354 | read_signatured_type (sig_type); |
348e048f | 23355 | |
348e048f | 23356 | sig_cu = sig_type->per_cu.cu; |
69d751e3 | 23357 | gdb_assert (sig_cu != NULL); |
9c541725 PA |
23358 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
23359 | temp_die.sect_off = sig_type->type_offset_in_section; | |
9a3c8263 | 23360 | die = (struct die_info *) htab_find_with_hash (sig_cu->die_hash, &temp_die, |
9c541725 | 23361 | to_underlying (temp_die.sect_off)); |
348e048f DE |
23362 | if (die) |
23363 | { | |
ed2dc618 | 23364 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 23365 | = (*ref_cu)->per_cu->dwarf2_per_objfile; |
ed2dc618 | 23366 | |
796a7ff8 DE |
23367 | /* For .gdb_index version 7 keep track of included TUs. |
23368 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
23369 | if (dwarf2_per_objfile->index_table != NULL | |
23370 | && dwarf2_per_objfile->index_table->version <= 7) | |
23371 | { | |
23372 | VEC_safe_push (dwarf2_per_cu_ptr, | |
23373 | (*ref_cu)->per_cu->imported_symtabs, | |
23374 | sig_cu->per_cu); | |
23375 | } | |
23376 | ||
348e048f DE |
23377 | *ref_cu = sig_cu; |
23378 | return die; | |
23379 | } | |
23380 | ||
ac9ec31b DE |
23381 | return NULL; |
23382 | } | |
23383 | ||
23384 | /* Follow signatured type referenced by ATTR in SRC_DIE. | |
23385 | On entry *REF_CU is the CU of SRC_DIE. | |
23386 | On exit *REF_CU is the CU of the result. | |
23387 | The result is the DIE of the type. | |
23388 | If the referenced type cannot be found an error is thrown. */ | |
23389 | ||
23390 | static struct die_info * | |
ff39bb5e | 23391 | follow_die_sig (struct die_info *src_die, const struct attribute *attr, |
ac9ec31b DE |
23392 | struct dwarf2_cu **ref_cu) |
23393 | { | |
23394 | ULONGEST signature = DW_SIGNATURE (attr); | |
23395 | struct signatured_type *sig_type; | |
23396 | struct die_info *die; | |
23397 | ||
23398 | gdb_assert (attr->form == DW_FORM_ref_sig8); | |
23399 | ||
a2ce51a0 | 23400 | sig_type = lookup_signatured_type (*ref_cu, signature); |
ac9ec31b DE |
23401 | /* sig_type will be NULL if the signatured type is missing from |
23402 | the debug info. */ | |
23403 | if (sig_type == NULL) | |
23404 | { | |
23405 | error (_("Dwarf Error: Cannot find signatured DIE %s referenced" | |
9d8780f0 SM |
23406 | " from DIE at %s [in module %s]"), |
23407 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
518817b3 | 23408 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23409 | } |
23410 | ||
23411 | die = follow_die_sig_1 (src_die, sig_type, ref_cu); | |
23412 | if (die == NULL) | |
23413 | { | |
23414 | dump_die_for_error (src_die); | |
23415 | error (_("Dwarf Error: Problem reading signatured DIE %s referenced" | |
9d8780f0 SM |
23416 | " from DIE at %s [in module %s]"), |
23417 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
518817b3 | 23418 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23419 | } |
23420 | ||
23421 | return die; | |
23422 | } | |
23423 | ||
23424 | /* Get the type specified by SIGNATURE referenced in DIE/CU, | |
23425 | reading in and processing the type unit if necessary. */ | |
23426 | ||
23427 | static struct type * | |
23428 | get_signatured_type (struct die_info *die, ULONGEST signature, | |
23429 | struct dwarf2_cu *cu) | |
23430 | { | |
518817b3 SM |
23431 | struct dwarf2_per_objfile *dwarf2_per_objfile |
23432 | = cu->per_cu->dwarf2_per_objfile; | |
ac9ec31b DE |
23433 | struct signatured_type *sig_type; |
23434 | struct dwarf2_cu *type_cu; | |
23435 | struct die_info *type_die; | |
23436 | struct type *type; | |
23437 | ||
a2ce51a0 | 23438 | sig_type = lookup_signatured_type (cu, signature); |
ac9ec31b DE |
23439 | /* sig_type will be NULL if the signatured type is missing from |
23440 | the debug info. */ | |
23441 | if (sig_type == NULL) | |
23442 | { | |
b98664d3 | 23443 | complaint (_("Dwarf Error: Cannot find signatured DIE %s referenced" |
9d8780f0 SM |
23444 | " from DIE at %s [in module %s]"), |
23445 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 23446 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23447 | return build_error_marker_type (cu, die); |
23448 | } | |
23449 | ||
23450 | /* If we already know the type we're done. */ | |
23451 | if (sig_type->type != NULL) | |
23452 | return sig_type->type; | |
23453 | ||
23454 | type_cu = cu; | |
23455 | type_die = follow_die_sig_1 (die, sig_type, &type_cu); | |
23456 | if (type_die != NULL) | |
23457 | { | |
23458 | /* N.B. We need to call get_die_type to ensure only one type for this DIE | |
23459 | is created. This is important, for example, because for c++ classes | |
23460 | we need TYPE_NAME set which is only done by new_symbol. Blech. */ | |
23461 | type = read_type_die (type_die, type_cu); | |
23462 | if (type == NULL) | |
23463 | { | |
b98664d3 | 23464 | complaint (_("Dwarf Error: Cannot build signatured type %s" |
9d8780f0 SM |
23465 | " referenced from DIE at %s [in module %s]"), |
23466 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 23467 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23468 | type = build_error_marker_type (cu, die); |
23469 | } | |
23470 | } | |
23471 | else | |
23472 | { | |
b98664d3 | 23473 | complaint (_("Dwarf Error: Problem reading signatured DIE %s referenced" |
9d8780f0 SM |
23474 | " from DIE at %s [in module %s]"), |
23475 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 23476 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23477 | type = build_error_marker_type (cu, die); |
23478 | } | |
23479 | sig_type->type = type; | |
23480 | ||
23481 | return type; | |
23482 | } | |
23483 | ||
23484 | /* Get the type specified by the DW_AT_signature ATTR in DIE/CU, | |
23485 | reading in and processing the type unit if necessary. */ | |
23486 | ||
23487 | static struct type * | |
ff39bb5e | 23488 | get_DW_AT_signature_type (struct die_info *die, const struct attribute *attr, |
b385a60d | 23489 | struct dwarf2_cu *cu) /* ARI: editCase function */ |
ac9ec31b DE |
23490 | { |
23491 | /* Yes, DW_AT_signature can use a non-ref_sig8 reference. */ | |
7771576e | 23492 | if (attr_form_is_ref (attr)) |
ac9ec31b DE |
23493 | { |
23494 | struct dwarf2_cu *type_cu = cu; | |
23495 | struct die_info *type_die = follow_die_ref (die, attr, &type_cu); | |
23496 | ||
23497 | return read_type_die (type_die, type_cu); | |
23498 | } | |
23499 | else if (attr->form == DW_FORM_ref_sig8) | |
23500 | { | |
23501 | return get_signatured_type (die, DW_SIGNATURE (attr), cu); | |
23502 | } | |
23503 | else | |
23504 | { | |
518817b3 SM |
23505 | struct dwarf2_per_objfile *dwarf2_per_objfile |
23506 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 23507 | |
b98664d3 | 23508 | complaint (_("Dwarf Error: DW_AT_signature has bad form %s in DIE" |
9d8780f0 SM |
23509 | " at %s [in module %s]"), |
23510 | dwarf_form_name (attr->form), sect_offset_str (die->sect_off), | |
4262abfb | 23511 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23512 | return build_error_marker_type (cu, die); |
23513 | } | |
348e048f DE |
23514 | } |
23515 | ||
e5fe5e75 | 23516 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
23517 | |
23518 | static void | |
e5fe5e75 | 23519 | load_full_type_unit (struct dwarf2_per_cu_data *per_cu) |
348e048f | 23520 | { |
52dc124a | 23521 | struct signatured_type *sig_type; |
348e048f | 23522 | |
f4dc4d17 DE |
23523 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
23524 | gdb_assert (! IS_TYPE_UNIT_GROUP (per_cu)); | |
23525 | ||
6721b2ec DE |
23526 | /* We have the per_cu, but we need the signatured_type. |
23527 | Fortunately this is an easy translation. */ | |
23528 | gdb_assert (per_cu->is_debug_types); | |
23529 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 23530 | |
6721b2ec | 23531 | gdb_assert (per_cu->cu == NULL); |
348e048f | 23532 | |
52dc124a | 23533 | read_signatured_type (sig_type); |
348e048f | 23534 | |
6721b2ec | 23535 | gdb_assert (per_cu->cu != NULL); |
348e048f DE |
23536 | } |
23537 | ||
dee91e82 DE |
23538 | /* die_reader_func for read_signatured_type. |
23539 | This is identical to load_full_comp_unit_reader, | |
23540 | but is kept separate for now. */ | |
348e048f DE |
23541 | |
23542 | static void | |
dee91e82 | 23543 | read_signatured_type_reader (const struct die_reader_specs *reader, |
d521ce57 | 23544 | const gdb_byte *info_ptr, |
dee91e82 DE |
23545 | struct die_info *comp_unit_die, |
23546 | int has_children, | |
23547 | void *data) | |
348e048f | 23548 | { |
dee91e82 | 23549 | struct dwarf2_cu *cu = reader->cu; |
348e048f | 23550 | |
dee91e82 DE |
23551 | gdb_assert (cu->die_hash == NULL); |
23552 | cu->die_hash = | |
23553 | htab_create_alloc_ex (cu->header.length / 12, | |
23554 | die_hash, | |
23555 | die_eq, | |
23556 | NULL, | |
23557 | &cu->comp_unit_obstack, | |
23558 | hashtab_obstack_allocate, | |
23559 | dummy_obstack_deallocate); | |
348e048f | 23560 | |
dee91e82 DE |
23561 | if (has_children) |
23562 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
23563 | &info_ptr, comp_unit_die); | |
23564 | cu->dies = comp_unit_die; | |
23565 | /* comp_unit_die is not stored in die_hash, no need. */ | |
348e048f DE |
23566 | |
23567 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 23568 | all CUs needed for references have been loaded yet, and symbol |
348e048f | 23569 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
23570 | or we won't be able to build types correctly. |
23571 | Similarly, if we do not read the producer, we can not apply | |
23572 | producer-specific interpretation. */ | |
95554aad | 23573 | prepare_one_comp_unit (cu, cu->dies, language_minimal); |
dee91e82 | 23574 | } |
348e048f | 23575 | |
3019eac3 DE |
23576 | /* Read in a signatured type and build its CU and DIEs. |
23577 | If the type is a stub for the real type in a DWO file, | |
23578 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
23579 | |
23580 | static void | |
23581 | read_signatured_type (struct signatured_type *sig_type) | |
23582 | { | |
23583 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 23584 | |
3019eac3 | 23585 | gdb_assert (per_cu->is_debug_types); |
dee91e82 | 23586 | gdb_assert (per_cu->cu == NULL); |
348e048f | 23587 | |
58f0c718 | 23588 | init_cutu_and_read_dies (per_cu, NULL, 0, 1, false, |
f4dc4d17 | 23589 | read_signatured_type_reader, NULL); |
7ee85ab1 | 23590 | sig_type->per_cu.tu_read = 1; |
c906108c SS |
23591 | } |
23592 | ||
c906108c SS |
23593 | /* Decode simple location descriptions. |
23594 | Given a pointer to a dwarf block that defines a location, compute | |
23595 | the location and return the value. | |
23596 | ||
4cecd739 DJ |
23597 | NOTE drow/2003-11-18: This function is called in two situations |
23598 | now: for the address of static or global variables (partial symbols | |
23599 | only) and for offsets into structures which are expected to be | |
23600 | (more or less) constant. The partial symbol case should go away, | |
23601 | and only the constant case should remain. That will let this | |
23602 | function complain more accurately. A few special modes are allowed | |
23603 | without complaint for global variables (for instance, global | |
23604 | register values and thread-local values). | |
c906108c SS |
23605 | |
23606 | A location description containing no operations indicates that the | |
4cecd739 | 23607 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
23608 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
23609 | callers will only want a very basic result and this can become a | |
21ae7a4d JK |
23610 | complaint. |
23611 | ||
23612 | Note that stack[0] is unused except as a default error return. */ | |
c906108c SS |
23613 | |
23614 | static CORE_ADDR | |
e7c27a73 | 23615 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 23616 | { |
518817b3 | 23617 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
56eb65bd SP |
23618 | size_t i; |
23619 | size_t size = blk->size; | |
d521ce57 | 23620 | const gdb_byte *data = blk->data; |
21ae7a4d JK |
23621 | CORE_ADDR stack[64]; |
23622 | int stacki; | |
23623 | unsigned int bytes_read, unsnd; | |
23624 | gdb_byte op; | |
c906108c | 23625 | |
21ae7a4d JK |
23626 | i = 0; |
23627 | stacki = 0; | |
23628 | stack[stacki] = 0; | |
23629 | stack[++stacki] = 0; | |
23630 | ||
23631 | while (i < size) | |
23632 | { | |
23633 | op = data[i++]; | |
23634 | switch (op) | |
23635 | { | |
23636 | case DW_OP_lit0: | |
23637 | case DW_OP_lit1: | |
23638 | case DW_OP_lit2: | |
23639 | case DW_OP_lit3: | |
23640 | case DW_OP_lit4: | |
23641 | case DW_OP_lit5: | |
23642 | case DW_OP_lit6: | |
23643 | case DW_OP_lit7: | |
23644 | case DW_OP_lit8: | |
23645 | case DW_OP_lit9: | |
23646 | case DW_OP_lit10: | |
23647 | case DW_OP_lit11: | |
23648 | case DW_OP_lit12: | |
23649 | case DW_OP_lit13: | |
23650 | case DW_OP_lit14: | |
23651 | case DW_OP_lit15: | |
23652 | case DW_OP_lit16: | |
23653 | case DW_OP_lit17: | |
23654 | case DW_OP_lit18: | |
23655 | case DW_OP_lit19: | |
23656 | case DW_OP_lit20: | |
23657 | case DW_OP_lit21: | |
23658 | case DW_OP_lit22: | |
23659 | case DW_OP_lit23: | |
23660 | case DW_OP_lit24: | |
23661 | case DW_OP_lit25: | |
23662 | case DW_OP_lit26: | |
23663 | case DW_OP_lit27: | |
23664 | case DW_OP_lit28: | |
23665 | case DW_OP_lit29: | |
23666 | case DW_OP_lit30: | |
23667 | case DW_OP_lit31: | |
23668 | stack[++stacki] = op - DW_OP_lit0; | |
23669 | break; | |
f1bea926 | 23670 | |
21ae7a4d JK |
23671 | case DW_OP_reg0: |
23672 | case DW_OP_reg1: | |
23673 | case DW_OP_reg2: | |
23674 | case DW_OP_reg3: | |
23675 | case DW_OP_reg4: | |
23676 | case DW_OP_reg5: | |
23677 | case DW_OP_reg6: | |
23678 | case DW_OP_reg7: | |
23679 | case DW_OP_reg8: | |
23680 | case DW_OP_reg9: | |
23681 | case DW_OP_reg10: | |
23682 | case DW_OP_reg11: | |
23683 | case DW_OP_reg12: | |
23684 | case DW_OP_reg13: | |
23685 | case DW_OP_reg14: | |
23686 | case DW_OP_reg15: | |
23687 | case DW_OP_reg16: | |
23688 | case DW_OP_reg17: | |
23689 | case DW_OP_reg18: | |
23690 | case DW_OP_reg19: | |
23691 | case DW_OP_reg20: | |
23692 | case DW_OP_reg21: | |
23693 | case DW_OP_reg22: | |
23694 | case DW_OP_reg23: | |
23695 | case DW_OP_reg24: | |
23696 | case DW_OP_reg25: | |
23697 | case DW_OP_reg26: | |
23698 | case DW_OP_reg27: | |
23699 | case DW_OP_reg28: | |
23700 | case DW_OP_reg29: | |
23701 | case DW_OP_reg30: | |
23702 | case DW_OP_reg31: | |
23703 | stack[++stacki] = op - DW_OP_reg0; | |
23704 | if (i < size) | |
23705 | dwarf2_complex_location_expr_complaint (); | |
23706 | break; | |
c906108c | 23707 | |
21ae7a4d JK |
23708 | case DW_OP_regx: |
23709 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
23710 | i += bytes_read; | |
23711 | stack[++stacki] = unsnd; | |
23712 | if (i < size) | |
23713 | dwarf2_complex_location_expr_complaint (); | |
23714 | break; | |
c906108c | 23715 | |
21ae7a4d JK |
23716 | case DW_OP_addr: |
23717 | stack[++stacki] = read_address (objfile->obfd, &data[i], | |
23718 | cu, &bytes_read); | |
23719 | i += bytes_read; | |
23720 | break; | |
d53d4ac5 | 23721 | |
21ae7a4d JK |
23722 | case DW_OP_const1u: |
23723 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
23724 | i += 1; | |
23725 | break; | |
23726 | ||
23727 | case DW_OP_const1s: | |
23728 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
23729 | i += 1; | |
23730 | break; | |
23731 | ||
23732 | case DW_OP_const2u: | |
23733 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
23734 | i += 2; | |
23735 | break; | |
23736 | ||
23737 | case DW_OP_const2s: | |
23738 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
23739 | i += 2; | |
23740 | break; | |
d53d4ac5 | 23741 | |
21ae7a4d JK |
23742 | case DW_OP_const4u: |
23743 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
23744 | i += 4; | |
23745 | break; | |
23746 | ||
23747 | case DW_OP_const4s: | |
23748 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
23749 | i += 4; | |
23750 | break; | |
23751 | ||
585861ea JK |
23752 | case DW_OP_const8u: |
23753 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
23754 | i += 8; | |
23755 | break; | |
23756 | ||
21ae7a4d JK |
23757 | case DW_OP_constu: |
23758 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
23759 | &bytes_read); | |
23760 | i += bytes_read; | |
23761 | break; | |
23762 | ||
23763 | case DW_OP_consts: | |
23764 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
23765 | i += bytes_read; | |
23766 | break; | |
23767 | ||
23768 | case DW_OP_dup: | |
23769 | stack[stacki + 1] = stack[stacki]; | |
23770 | stacki++; | |
23771 | break; | |
23772 | ||
23773 | case DW_OP_plus: | |
23774 | stack[stacki - 1] += stack[stacki]; | |
23775 | stacki--; | |
23776 | break; | |
23777 | ||
23778 | case DW_OP_plus_uconst: | |
23779 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
23780 | &bytes_read); | |
23781 | i += bytes_read; | |
23782 | break; | |
23783 | ||
23784 | case DW_OP_minus: | |
23785 | stack[stacki - 1] -= stack[stacki]; | |
23786 | stacki--; | |
23787 | break; | |
23788 | ||
23789 | case DW_OP_deref: | |
23790 | /* If we're not the last op, then we definitely can't encode | |
23791 | this using GDB's address_class enum. This is valid for partial | |
23792 | global symbols, although the variable's address will be bogus | |
23793 | in the psymtab. */ | |
23794 | if (i < size) | |
23795 | dwarf2_complex_location_expr_complaint (); | |
23796 | break; | |
23797 | ||
23798 | case DW_OP_GNU_push_tls_address: | |
4aa4e28b | 23799 | case DW_OP_form_tls_address: |
21ae7a4d JK |
23800 | /* The top of the stack has the offset from the beginning |
23801 | of the thread control block at which the variable is located. */ | |
23802 | /* Nothing should follow this operator, so the top of stack would | |
23803 | be returned. */ | |
23804 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
23805 | address will be bogus in the psymtab. Make it always at least |
23806 | non-zero to not look as a variable garbage collected by linker | |
23807 | which have DW_OP_addr 0. */ | |
21ae7a4d JK |
23808 | if (i < size) |
23809 | dwarf2_complex_location_expr_complaint (); | |
585861ea | 23810 | stack[stacki]++; |
21ae7a4d JK |
23811 | break; |
23812 | ||
23813 | case DW_OP_GNU_uninit: | |
23814 | break; | |
23815 | ||
3019eac3 | 23816 | case DW_OP_GNU_addr_index: |
49f6c839 | 23817 | case DW_OP_GNU_const_index: |
3019eac3 DE |
23818 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
23819 | &bytes_read); | |
23820 | i += bytes_read; | |
23821 | break; | |
23822 | ||
21ae7a4d JK |
23823 | default: |
23824 | { | |
f39c6ffd | 23825 | const char *name = get_DW_OP_name (op); |
21ae7a4d JK |
23826 | |
23827 | if (name) | |
b98664d3 | 23828 | complaint (_("unsupported stack op: '%s'"), |
21ae7a4d JK |
23829 | name); |
23830 | else | |
b98664d3 | 23831 | complaint (_("unsupported stack op: '%02x'"), |
21ae7a4d JK |
23832 | op); |
23833 | } | |
23834 | ||
23835 | return (stack[stacki]); | |
d53d4ac5 | 23836 | } |
3c6e0cb3 | 23837 | |
21ae7a4d JK |
23838 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
23839 | outside of the allocated space. Also enforce minimum>0. */ | |
23840 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
23841 | { | |
b98664d3 | 23842 | complaint (_("location description stack overflow")); |
21ae7a4d JK |
23843 | return 0; |
23844 | } | |
23845 | ||
23846 | if (stacki <= 0) | |
23847 | { | |
b98664d3 | 23848 | complaint (_("location description stack underflow")); |
21ae7a4d JK |
23849 | return 0; |
23850 | } | |
23851 | } | |
23852 | return (stack[stacki]); | |
c906108c SS |
23853 | } |
23854 | ||
23855 | /* memory allocation interface */ | |
23856 | ||
c906108c | 23857 | static struct dwarf_block * |
7b5a2f43 | 23858 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c | 23859 | { |
8d749320 | 23860 | return XOBNEW (&cu->comp_unit_obstack, struct dwarf_block); |
c906108c SS |
23861 | } |
23862 | ||
c906108c | 23863 | static struct die_info * |
b60c80d6 | 23864 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
23865 | { |
23866 | struct die_info *die; | |
b60c80d6 DJ |
23867 | size_t size = sizeof (struct die_info); |
23868 | ||
23869 | if (num_attrs > 1) | |
23870 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 23871 | |
b60c80d6 | 23872 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
23873 | memset (die, 0, sizeof (struct die_info)); |
23874 | return (die); | |
23875 | } | |
2e276125 JB |
23876 | |
23877 | \f | |
23878 | /* Macro support. */ | |
23879 | ||
233d95b5 JK |
23880 | /* Return file name relative to the compilation directory of file number I in |
23881 | *LH's file name table. The result is allocated using xmalloc; the caller is | |
2e276125 | 23882 | responsible for freeing it. */ |
233d95b5 | 23883 | |
2e276125 | 23884 | static char * |
233d95b5 | 23885 | file_file_name (int file, struct line_header *lh) |
2e276125 | 23886 | { |
6a83a1e6 EZ |
23887 | /* Is the file number a valid index into the line header's file name |
23888 | table? Remember that file numbers start with one, not zero. */ | |
fff8551c | 23889 | if (1 <= file && file <= lh->file_names.size ()) |
6a83a1e6 | 23890 | { |
8c43009f | 23891 | const file_entry &fe = lh->file_names[file - 1]; |
6e70227d | 23892 | |
8c43009f PA |
23893 | if (!IS_ABSOLUTE_PATH (fe.name)) |
23894 | { | |
23895 | const char *dir = fe.include_dir (lh); | |
23896 | if (dir != NULL) | |
23897 | return concat (dir, SLASH_STRING, fe.name, (char *) NULL); | |
23898 | } | |
23899 | return xstrdup (fe.name); | |
6a83a1e6 | 23900 | } |
2e276125 JB |
23901 | else |
23902 | { | |
6a83a1e6 EZ |
23903 | /* The compiler produced a bogus file number. We can at least |
23904 | record the macro definitions made in the file, even if we | |
23905 | won't be able to find the file by name. */ | |
23906 | char fake_name[80]; | |
9a619af0 | 23907 | |
8c042590 PM |
23908 | xsnprintf (fake_name, sizeof (fake_name), |
23909 | "<bad macro file number %d>", file); | |
2e276125 | 23910 | |
b98664d3 | 23911 | complaint (_("bad file number in macro information (%d)"), |
6a83a1e6 | 23912 | file); |
2e276125 | 23913 | |
6a83a1e6 | 23914 | return xstrdup (fake_name); |
2e276125 JB |
23915 | } |
23916 | } | |
23917 | ||
233d95b5 JK |
23918 | /* Return the full name of file number I in *LH's file name table. |
23919 | Use COMP_DIR as the name of the current directory of the | |
23920 | compilation. The result is allocated using xmalloc; the caller is | |
23921 | responsible for freeing it. */ | |
23922 | static char * | |
23923 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
23924 | { | |
23925 | /* Is the file number a valid index into the line header's file name | |
23926 | table? Remember that file numbers start with one, not zero. */ | |
fff8551c | 23927 | if (1 <= file && file <= lh->file_names.size ()) |
233d95b5 JK |
23928 | { |
23929 | char *relative = file_file_name (file, lh); | |
23930 | ||
23931 | if (IS_ABSOLUTE_PATH (relative) || comp_dir == NULL) | |
23932 | return relative; | |
b36cec19 PA |
23933 | return reconcat (relative, comp_dir, SLASH_STRING, |
23934 | relative, (char *) NULL); | |
233d95b5 JK |
23935 | } |
23936 | else | |
23937 | return file_file_name (file, lh); | |
23938 | } | |
23939 | ||
2e276125 JB |
23940 | |
23941 | static struct macro_source_file * | |
804d2729 TT |
23942 | macro_start_file (struct dwarf2_cu *cu, |
23943 | int file, int line, | |
2e276125 | 23944 | struct macro_source_file *current_file, |
43f3e411 | 23945 | struct line_header *lh) |
2e276125 | 23946 | { |
233d95b5 JK |
23947 | /* File name relative to the compilation directory of this source file. */ |
23948 | char *file_name = file_file_name (file, lh); | |
2e276125 | 23949 | |
2e276125 | 23950 | if (! current_file) |
abc9d0dc | 23951 | { |
fc474241 DE |
23952 | /* Note: We don't create a macro table for this compilation unit |
23953 | at all until we actually get a filename. */ | |
804d2729 | 23954 | struct macro_table *macro_table = cu->builder->get_macro_table (); |
fc474241 | 23955 | |
abc9d0dc TT |
23956 | /* If we have no current file, then this must be the start_file |
23957 | directive for the compilation unit's main source file. */ | |
fc474241 DE |
23958 | current_file = macro_set_main (macro_table, file_name); |
23959 | macro_define_special (macro_table); | |
abc9d0dc | 23960 | } |
2e276125 | 23961 | else |
233d95b5 | 23962 | current_file = macro_include (current_file, line, file_name); |
2e276125 | 23963 | |
233d95b5 | 23964 | xfree (file_name); |
6e70227d | 23965 | |
2e276125 JB |
23966 | return current_file; |
23967 | } | |
23968 | ||
2e276125 JB |
23969 | static const char * |
23970 | consume_improper_spaces (const char *p, const char *body) | |
23971 | { | |
23972 | if (*p == ' ') | |
23973 | { | |
b98664d3 | 23974 | complaint (_("macro definition contains spaces " |
3e43a32a | 23975 | "in formal argument list:\n`%s'"), |
4d3c2250 | 23976 | body); |
2e276125 JB |
23977 | |
23978 | while (*p == ' ') | |
23979 | p++; | |
23980 | } | |
23981 | ||
23982 | return p; | |
23983 | } | |
23984 | ||
23985 | ||
23986 | static void | |
23987 | parse_macro_definition (struct macro_source_file *file, int line, | |
23988 | const char *body) | |
23989 | { | |
23990 | const char *p; | |
23991 | ||
23992 | /* The body string takes one of two forms. For object-like macro | |
23993 | definitions, it should be: | |
23994 | ||
23995 | <macro name> " " <definition> | |
23996 | ||
23997 | For function-like macro definitions, it should be: | |
23998 | ||
23999 | <macro name> "() " <definition> | |
24000 | or | |
24001 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
24002 | ||
24003 | Spaces may appear only where explicitly indicated, and in the | |
24004 | <definition>. | |
24005 | ||
24006 | The Dwarf 2 spec says that an object-like macro's name is always | |
24007 | followed by a space, but versions of GCC around March 2002 omit | |
6e70227d | 24008 | the space when the macro's definition is the empty string. |
2e276125 JB |
24009 | |
24010 | The Dwarf 2 spec says that there should be no spaces between the | |
24011 | formal arguments in a function-like macro's formal argument list, | |
24012 | but versions of GCC around March 2002 include spaces after the | |
24013 | commas. */ | |
24014 | ||
24015 | ||
24016 | /* Find the extent of the macro name. The macro name is terminated | |
24017 | by either a space or null character (for an object-like macro) or | |
24018 | an opening paren (for a function-like macro). */ | |
24019 | for (p = body; *p; p++) | |
24020 | if (*p == ' ' || *p == '(') | |
24021 | break; | |
24022 | ||
24023 | if (*p == ' ' || *p == '\0') | |
24024 | { | |
24025 | /* It's an object-like macro. */ | |
24026 | int name_len = p - body; | |
3f8a7804 | 24027 | char *name = savestring (body, name_len); |
2e276125 JB |
24028 | const char *replacement; |
24029 | ||
24030 | if (*p == ' ') | |
24031 | replacement = body + name_len + 1; | |
24032 | else | |
24033 | { | |
4d3c2250 | 24034 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
24035 | replacement = body + name_len; |
24036 | } | |
6e70227d | 24037 | |
2e276125 JB |
24038 | macro_define_object (file, line, name, replacement); |
24039 | ||
24040 | xfree (name); | |
24041 | } | |
24042 | else if (*p == '(') | |
24043 | { | |
24044 | /* It's a function-like macro. */ | |
3f8a7804 | 24045 | char *name = savestring (body, p - body); |
2e276125 JB |
24046 | int argc = 0; |
24047 | int argv_size = 1; | |
8d749320 | 24048 | char **argv = XNEWVEC (char *, argv_size); |
2e276125 JB |
24049 | |
24050 | p++; | |
24051 | ||
24052 | p = consume_improper_spaces (p, body); | |
24053 | ||
24054 | /* Parse the formal argument list. */ | |
24055 | while (*p && *p != ')') | |
24056 | { | |
24057 | /* Find the extent of the current argument name. */ | |
24058 | const char *arg_start = p; | |
24059 | ||
24060 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
24061 | p++; | |
24062 | ||
24063 | if (! *p || p == arg_start) | |
4d3c2250 | 24064 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
24065 | else |
24066 | { | |
24067 | /* Make sure argv has room for the new argument. */ | |
24068 | if (argc >= argv_size) | |
24069 | { | |
24070 | argv_size *= 2; | |
224c3ddb | 24071 | argv = XRESIZEVEC (char *, argv, argv_size); |
2e276125 JB |
24072 | } |
24073 | ||
3f8a7804 | 24074 | argv[argc++] = savestring (arg_start, p - arg_start); |
2e276125 JB |
24075 | } |
24076 | ||
24077 | p = consume_improper_spaces (p, body); | |
24078 | ||
24079 | /* Consume the comma, if present. */ | |
24080 | if (*p == ',') | |
24081 | { | |
24082 | p++; | |
24083 | ||
24084 | p = consume_improper_spaces (p, body); | |
24085 | } | |
24086 | } | |
24087 | ||
24088 | if (*p == ')') | |
24089 | { | |
24090 | p++; | |
24091 | ||
24092 | if (*p == ' ') | |
24093 | /* Perfectly formed definition, no complaints. */ | |
24094 | macro_define_function (file, line, name, | |
6e70227d | 24095 | argc, (const char **) argv, |
2e276125 JB |
24096 | p + 1); |
24097 | else if (*p == '\0') | |
24098 | { | |
24099 | /* Complain, but do define it. */ | |
4d3c2250 | 24100 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 | 24101 | macro_define_function (file, line, name, |
6e70227d | 24102 | argc, (const char **) argv, |
2e276125 JB |
24103 | p); |
24104 | } | |
24105 | else | |
24106 | /* Just complain. */ | |
4d3c2250 | 24107 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
24108 | } |
24109 | else | |
24110 | /* Just complain. */ | |
4d3c2250 | 24111 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
24112 | |
24113 | xfree (name); | |
24114 | { | |
24115 | int i; | |
24116 | ||
24117 | for (i = 0; i < argc; i++) | |
24118 | xfree (argv[i]); | |
24119 | } | |
24120 | xfree (argv); | |
24121 | } | |
24122 | else | |
4d3c2250 | 24123 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
24124 | } |
24125 | ||
cf2c3c16 TT |
24126 | /* Skip some bytes from BYTES according to the form given in FORM. |
24127 | Returns the new pointer. */ | |
2e276125 | 24128 | |
d521ce57 TT |
24129 | static const gdb_byte * |
24130 | skip_form_bytes (bfd *abfd, const gdb_byte *bytes, const gdb_byte *buffer_end, | |
cf2c3c16 TT |
24131 | enum dwarf_form form, |
24132 | unsigned int offset_size, | |
24133 | struct dwarf2_section_info *section) | |
2e276125 | 24134 | { |
cf2c3c16 | 24135 | unsigned int bytes_read; |
2e276125 | 24136 | |
cf2c3c16 | 24137 | switch (form) |
2e276125 | 24138 | { |
cf2c3c16 TT |
24139 | case DW_FORM_data1: |
24140 | case DW_FORM_flag: | |
24141 | ++bytes; | |
24142 | break; | |
24143 | ||
24144 | case DW_FORM_data2: | |
24145 | bytes += 2; | |
24146 | break; | |
24147 | ||
24148 | case DW_FORM_data4: | |
24149 | bytes += 4; | |
24150 | break; | |
24151 | ||
24152 | case DW_FORM_data8: | |
24153 | bytes += 8; | |
24154 | break; | |
24155 | ||
0224619f JK |
24156 | case DW_FORM_data16: |
24157 | bytes += 16; | |
24158 | break; | |
24159 | ||
cf2c3c16 TT |
24160 | case DW_FORM_string: |
24161 | read_direct_string (abfd, bytes, &bytes_read); | |
24162 | bytes += bytes_read; | |
24163 | break; | |
24164 | ||
24165 | case DW_FORM_sec_offset: | |
24166 | case DW_FORM_strp: | |
36586728 | 24167 | case DW_FORM_GNU_strp_alt: |
cf2c3c16 TT |
24168 | bytes += offset_size; |
24169 | break; | |
24170 | ||
24171 | case DW_FORM_block: | |
24172 | bytes += read_unsigned_leb128 (abfd, bytes, &bytes_read); | |
24173 | bytes += bytes_read; | |
24174 | break; | |
24175 | ||
24176 | case DW_FORM_block1: | |
24177 | bytes += 1 + read_1_byte (abfd, bytes); | |
24178 | break; | |
24179 | case DW_FORM_block2: | |
24180 | bytes += 2 + read_2_bytes (abfd, bytes); | |
24181 | break; | |
24182 | case DW_FORM_block4: | |
24183 | bytes += 4 + read_4_bytes (abfd, bytes); | |
24184 | break; | |
24185 | ||
24186 | case DW_FORM_sdata: | |
24187 | case DW_FORM_udata: | |
3019eac3 DE |
24188 | case DW_FORM_GNU_addr_index: |
24189 | case DW_FORM_GNU_str_index: | |
d521ce57 | 24190 | bytes = gdb_skip_leb128 (bytes, buffer_end); |
f664829e DE |
24191 | if (bytes == NULL) |
24192 | { | |
24193 | dwarf2_section_buffer_overflow_complaint (section); | |
24194 | return NULL; | |
24195 | } | |
cf2c3c16 TT |
24196 | break; |
24197 | ||
663c44ac JK |
24198 | case DW_FORM_implicit_const: |
24199 | break; | |
24200 | ||
cf2c3c16 TT |
24201 | default: |
24202 | { | |
b98664d3 | 24203 | complaint (_("invalid form 0x%x in `%s'"), |
a32a8923 | 24204 | form, get_section_name (section)); |
cf2c3c16 TT |
24205 | return NULL; |
24206 | } | |
2e276125 JB |
24207 | } |
24208 | ||
cf2c3c16 TT |
24209 | return bytes; |
24210 | } | |
757a13d0 | 24211 | |
cf2c3c16 TT |
24212 | /* A helper for dwarf_decode_macros that handles skipping an unknown |
24213 | opcode. Returns an updated pointer to the macro data buffer; or, | |
24214 | on error, issues a complaint and returns NULL. */ | |
757a13d0 | 24215 | |
d521ce57 | 24216 | static const gdb_byte * |
cf2c3c16 | 24217 | skip_unknown_opcode (unsigned int opcode, |
d521ce57 TT |
24218 | const gdb_byte **opcode_definitions, |
24219 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, | |
cf2c3c16 TT |
24220 | bfd *abfd, |
24221 | unsigned int offset_size, | |
24222 | struct dwarf2_section_info *section) | |
24223 | { | |
24224 | unsigned int bytes_read, i; | |
24225 | unsigned long arg; | |
d521ce57 | 24226 | const gdb_byte *defn; |
2e276125 | 24227 | |
cf2c3c16 | 24228 | if (opcode_definitions[opcode] == NULL) |
2e276125 | 24229 | { |
b98664d3 | 24230 | complaint (_("unrecognized DW_MACFINO opcode 0x%x"), |
cf2c3c16 TT |
24231 | opcode); |
24232 | return NULL; | |
24233 | } | |
2e276125 | 24234 | |
cf2c3c16 TT |
24235 | defn = opcode_definitions[opcode]; |
24236 | arg = read_unsigned_leb128 (abfd, defn, &bytes_read); | |
24237 | defn += bytes_read; | |
2e276125 | 24238 | |
cf2c3c16 TT |
24239 | for (i = 0; i < arg; ++i) |
24240 | { | |
aead7601 SM |
24241 | mac_ptr = skip_form_bytes (abfd, mac_ptr, mac_end, |
24242 | (enum dwarf_form) defn[i], offset_size, | |
f664829e | 24243 | section); |
cf2c3c16 TT |
24244 | if (mac_ptr == NULL) |
24245 | { | |
24246 | /* skip_form_bytes already issued the complaint. */ | |
24247 | return NULL; | |
24248 | } | |
24249 | } | |
757a13d0 | 24250 | |
cf2c3c16 TT |
24251 | return mac_ptr; |
24252 | } | |
757a13d0 | 24253 | |
cf2c3c16 TT |
24254 | /* A helper function which parses the header of a macro section. |
24255 | If the macro section is the extended (for now called "GNU") type, | |
24256 | then this updates *OFFSET_SIZE. Returns a pointer to just after | |
24257 | the header, or issues a complaint and returns NULL on error. */ | |
757a13d0 | 24258 | |
d521ce57 TT |
24259 | static const gdb_byte * |
24260 | dwarf_parse_macro_header (const gdb_byte **opcode_definitions, | |
cf2c3c16 | 24261 | bfd *abfd, |
d521ce57 | 24262 | const gdb_byte *mac_ptr, |
cf2c3c16 TT |
24263 | unsigned int *offset_size, |
24264 | int section_is_gnu) | |
24265 | { | |
24266 | memset (opcode_definitions, 0, 256 * sizeof (gdb_byte *)); | |
757a13d0 | 24267 | |
cf2c3c16 TT |
24268 | if (section_is_gnu) |
24269 | { | |
24270 | unsigned int version, flags; | |
757a13d0 | 24271 | |
cf2c3c16 | 24272 | version = read_2_bytes (abfd, mac_ptr); |
0af92d60 | 24273 | if (version != 4 && version != 5) |
cf2c3c16 | 24274 | { |
b98664d3 | 24275 | complaint (_("unrecognized version `%d' in .debug_macro section"), |
cf2c3c16 TT |
24276 | version); |
24277 | return NULL; | |
24278 | } | |
24279 | mac_ptr += 2; | |
757a13d0 | 24280 | |
cf2c3c16 TT |
24281 | flags = read_1_byte (abfd, mac_ptr); |
24282 | ++mac_ptr; | |
24283 | *offset_size = (flags & 1) ? 8 : 4; | |
757a13d0 | 24284 | |
cf2c3c16 TT |
24285 | if ((flags & 2) != 0) |
24286 | /* We don't need the line table offset. */ | |
24287 | mac_ptr += *offset_size; | |
757a13d0 | 24288 | |
cf2c3c16 TT |
24289 | /* Vendor opcode descriptions. */ |
24290 | if ((flags & 4) != 0) | |
24291 | { | |
24292 | unsigned int i, count; | |
757a13d0 | 24293 | |
cf2c3c16 TT |
24294 | count = read_1_byte (abfd, mac_ptr); |
24295 | ++mac_ptr; | |
24296 | for (i = 0; i < count; ++i) | |
24297 | { | |
24298 | unsigned int opcode, bytes_read; | |
24299 | unsigned long arg; | |
24300 | ||
24301 | opcode = read_1_byte (abfd, mac_ptr); | |
24302 | ++mac_ptr; | |
24303 | opcode_definitions[opcode] = mac_ptr; | |
24304 | arg = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24305 | mac_ptr += bytes_read; | |
24306 | mac_ptr += arg; | |
24307 | } | |
757a13d0 | 24308 | } |
cf2c3c16 | 24309 | } |
757a13d0 | 24310 | |
cf2c3c16 TT |
24311 | return mac_ptr; |
24312 | } | |
757a13d0 | 24313 | |
cf2c3c16 | 24314 | /* A helper for dwarf_decode_macros that handles the GNU extensions, |
0af92d60 | 24315 | including DW_MACRO_import. */ |
cf2c3c16 TT |
24316 | |
24317 | static void | |
804d2729 | 24318 | dwarf_decode_macro_bytes (struct dwarf2_cu *cu, |
ed2dc618 | 24319 | bfd *abfd, |
d521ce57 | 24320 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, |
cf2c3c16 | 24321 | struct macro_source_file *current_file, |
43f3e411 | 24322 | struct line_header *lh, |
cf2c3c16 | 24323 | struct dwarf2_section_info *section, |
36586728 | 24324 | int section_is_gnu, int section_is_dwz, |
cf2c3c16 | 24325 | unsigned int offset_size, |
8fc3fc34 | 24326 | htab_t include_hash) |
cf2c3c16 | 24327 | { |
804d2729 TT |
24328 | struct dwarf2_per_objfile *dwarf2_per_objfile |
24329 | = cu->per_cu->dwarf2_per_objfile; | |
4d663531 | 24330 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
cf2c3c16 TT |
24331 | enum dwarf_macro_record_type macinfo_type; |
24332 | int at_commandline; | |
d521ce57 | 24333 | const gdb_byte *opcode_definitions[256]; |
757a13d0 | 24334 | |
cf2c3c16 TT |
24335 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, |
24336 | &offset_size, section_is_gnu); | |
24337 | if (mac_ptr == NULL) | |
24338 | { | |
24339 | /* We already issued a complaint. */ | |
24340 | return; | |
24341 | } | |
757a13d0 JK |
24342 | |
24343 | /* Determines if GDB is still before first DW_MACINFO_start_file. If true | |
24344 | GDB is still reading the definitions from command line. First | |
24345 | DW_MACINFO_start_file will need to be ignored as it was already executed | |
24346 | to create CURRENT_FILE for the main source holding also the command line | |
24347 | definitions. On first met DW_MACINFO_start_file this flag is reset to | |
24348 | normally execute all the remaining DW_MACINFO_start_file macinfos. */ | |
24349 | ||
24350 | at_commandline = 1; | |
24351 | ||
24352 | do | |
24353 | { | |
24354 | /* Do we at least have room for a macinfo type byte? */ | |
24355 | if (mac_ptr >= mac_end) | |
24356 | { | |
f664829e | 24357 | dwarf2_section_buffer_overflow_complaint (section); |
757a13d0 JK |
24358 | break; |
24359 | } | |
24360 | ||
aead7601 | 24361 | macinfo_type = (enum dwarf_macro_record_type) read_1_byte (abfd, mac_ptr); |
757a13d0 JK |
24362 | mac_ptr++; |
24363 | ||
cf2c3c16 TT |
24364 | /* Note that we rely on the fact that the corresponding GNU and |
24365 | DWARF constants are the same. */ | |
132448f8 SM |
24366 | DIAGNOSTIC_PUSH |
24367 | DIAGNOSTIC_IGNORE_SWITCH_DIFFERENT_ENUM_TYPES | |
757a13d0 JK |
24368 | switch (macinfo_type) |
24369 | { | |
24370 | /* A zero macinfo type indicates the end of the macro | |
24371 | information. */ | |
24372 | case 0: | |
24373 | break; | |
2e276125 | 24374 | |
0af92d60 JK |
24375 | case DW_MACRO_define: |
24376 | case DW_MACRO_undef: | |
24377 | case DW_MACRO_define_strp: | |
24378 | case DW_MACRO_undef_strp: | |
24379 | case DW_MACRO_define_sup: | |
24380 | case DW_MACRO_undef_sup: | |
2e276125 | 24381 | { |
891d2f0b | 24382 | unsigned int bytes_read; |
2e276125 | 24383 | int line; |
d521ce57 | 24384 | const char *body; |
cf2c3c16 | 24385 | int is_define; |
2e276125 | 24386 | |
cf2c3c16 TT |
24387 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
24388 | mac_ptr += bytes_read; | |
24389 | ||
0af92d60 JK |
24390 | if (macinfo_type == DW_MACRO_define |
24391 | || macinfo_type == DW_MACRO_undef) | |
cf2c3c16 TT |
24392 | { |
24393 | body = read_direct_string (abfd, mac_ptr, &bytes_read); | |
24394 | mac_ptr += bytes_read; | |
24395 | } | |
24396 | else | |
24397 | { | |
24398 | LONGEST str_offset; | |
24399 | ||
24400 | str_offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
24401 | mac_ptr += offset_size; | |
2e276125 | 24402 | |
0af92d60 JK |
24403 | if (macinfo_type == DW_MACRO_define_sup |
24404 | || macinfo_type == DW_MACRO_undef_sup | |
f7a35f02 | 24405 | || section_is_dwz) |
36586728 | 24406 | { |
ed2dc618 SM |
24407 | struct dwz_file *dwz |
24408 | = dwarf2_get_dwz_file (dwarf2_per_objfile); | |
36586728 | 24409 | |
ed2dc618 SM |
24410 | body = read_indirect_string_from_dwz (objfile, |
24411 | dwz, str_offset); | |
36586728 TT |
24412 | } |
24413 | else | |
ed2dc618 SM |
24414 | body = read_indirect_string_at_offset (dwarf2_per_objfile, |
24415 | abfd, str_offset); | |
cf2c3c16 TT |
24416 | } |
24417 | ||
0af92d60 JK |
24418 | is_define = (macinfo_type == DW_MACRO_define |
24419 | || macinfo_type == DW_MACRO_define_strp | |
24420 | || macinfo_type == DW_MACRO_define_sup); | |
2e276125 | 24421 | if (! current_file) |
757a13d0 JK |
24422 | { |
24423 | /* DWARF violation as no main source is present. */ | |
b98664d3 | 24424 | complaint (_("debug info with no main source gives macro %s " |
757a13d0 | 24425 | "on line %d: %s"), |
cf2c3c16 TT |
24426 | is_define ? _("definition") : _("undefinition"), |
24427 | line, body); | |
757a13d0 JK |
24428 | break; |
24429 | } | |
3e43a32a MS |
24430 | if ((line == 0 && !at_commandline) |
24431 | || (line != 0 && at_commandline)) | |
b98664d3 | 24432 | complaint (_("debug info gives %s macro %s with %s line %d: %s"), |
757a13d0 | 24433 | at_commandline ? _("command-line") : _("in-file"), |
cf2c3c16 | 24434 | is_define ? _("definition") : _("undefinition"), |
757a13d0 JK |
24435 | line == 0 ? _("zero") : _("non-zero"), line, body); |
24436 | ||
cf2c3c16 | 24437 | if (is_define) |
757a13d0 | 24438 | parse_macro_definition (current_file, line, body); |
cf2c3c16 TT |
24439 | else |
24440 | { | |
0af92d60 JK |
24441 | gdb_assert (macinfo_type == DW_MACRO_undef |
24442 | || macinfo_type == DW_MACRO_undef_strp | |
24443 | || macinfo_type == DW_MACRO_undef_sup); | |
cf2c3c16 TT |
24444 | macro_undef (current_file, line, body); |
24445 | } | |
2e276125 JB |
24446 | } |
24447 | break; | |
24448 | ||
0af92d60 | 24449 | case DW_MACRO_start_file: |
2e276125 | 24450 | { |
891d2f0b | 24451 | unsigned int bytes_read; |
2e276125 JB |
24452 | int line, file; |
24453 | ||
24454 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24455 | mac_ptr += bytes_read; | |
24456 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24457 | mac_ptr += bytes_read; | |
24458 | ||
3e43a32a MS |
24459 | if ((line == 0 && !at_commandline) |
24460 | || (line != 0 && at_commandline)) | |
b98664d3 | 24461 | complaint (_("debug info gives source %d included " |
757a13d0 JK |
24462 | "from %s at %s line %d"), |
24463 | file, at_commandline ? _("command-line") : _("file"), | |
24464 | line == 0 ? _("zero") : _("non-zero"), line); | |
24465 | ||
24466 | if (at_commandline) | |
24467 | { | |
0af92d60 | 24468 | /* This DW_MACRO_start_file was executed in the |
cf2c3c16 | 24469 | pass one. */ |
757a13d0 JK |
24470 | at_commandline = 0; |
24471 | } | |
24472 | else | |
804d2729 TT |
24473 | current_file = macro_start_file (cu, file, line, current_file, |
24474 | lh); | |
2e276125 JB |
24475 | } |
24476 | break; | |
24477 | ||
0af92d60 | 24478 | case DW_MACRO_end_file: |
2e276125 | 24479 | if (! current_file) |
b98664d3 | 24480 | complaint (_("macro debug info has an unmatched " |
3e43a32a | 24481 | "`close_file' directive")); |
2e276125 JB |
24482 | else |
24483 | { | |
24484 | current_file = current_file->included_by; | |
24485 | if (! current_file) | |
24486 | { | |
cf2c3c16 | 24487 | enum dwarf_macro_record_type next_type; |
2e276125 JB |
24488 | |
24489 | /* GCC circa March 2002 doesn't produce the zero | |
24490 | type byte marking the end of the compilation | |
24491 | unit. Complain if it's not there, but exit no | |
24492 | matter what. */ | |
24493 | ||
24494 | /* Do we at least have room for a macinfo type byte? */ | |
24495 | if (mac_ptr >= mac_end) | |
24496 | { | |
f664829e | 24497 | dwarf2_section_buffer_overflow_complaint (section); |
2e276125 JB |
24498 | return; |
24499 | } | |
24500 | ||
24501 | /* We don't increment mac_ptr here, so this is just | |
24502 | a look-ahead. */ | |
aead7601 SM |
24503 | next_type |
24504 | = (enum dwarf_macro_record_type) read_1_byte (abfd, | |
24505 | mac_ptr); | |
2e276125 | 24506 | if (next_type != 0) |
b98664d3 | 24507 | complaint (_("no terminating 0-type entry for " |
3e43a32a | 24508 | "macros in `.debug_macinfo' section")); |
2e276125 JB |
24509 | |
24510 | return; | |
24511 | } | |
24512 | } | |
24513 | break; | |
24514 | ||
0af92d60 JK |
24515 | case DW_MACRO_import: |
24516 | case DW_MACRO_import_sup: | |
cf2c3c16 TT |
24517 | { |
24518 | LONGEST offset; | |
8fc3fc34 | 24519 | void **slot; |
a036ba48 TT |
24520 | bfd *include_bfd = abfd; |
24521 | struct dwarf2_section_info *include_section = section; | |
d521ce57 | 24522 | const gdb_byte *include_mac_end = mac_end; |
a036ba48 | 24523 | int is_dwz = section_is_dwz; |
d521ce57 | 24524 | const gdb_byte *new_mac_ptr; |
cf2c3c16 TT |
24525 | |
24526 | offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
24527 | mac_ptr += offset_size; | |
24528 | ||
0af92d60 | 24529 | if (macinfo_type == DW_MACRO_import_sup) |
a036ba48 | 24530 | { |
ed2dc618 | 24531 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
a036ba48 | 24532 | |
4d663531 | 24533 | dwarf2_read_section (objfile, &dwz->macro); |
a036ba48 | 24534 | |
a036ba48 | 24535 | include_section = &dwz->macro; |
a32a8923 | 24536 | include_bfd = get_section_bfd_owner (include_section); |
a036ba48 TT |
24537 | include_mac_end = dwz->macro.buffer + dwz->macro.size; |
24538 | is_dwz = 1; | |
24539 | } | |
24540 | ||
24541 | new_mac_ptr = include_section->buffer + offset; | |
24542 | slot = htab_find_slot (include_hash, new_mac_ptr, INSERT); | |
24543 | ||
8fc3fc34 TT |
24544 | if (*slot != NULL) |
24545 | { | |
24546 | /* This has actually happened; see | |
24547 | http://sourceware.org/bugzilla/show_bug.cgi?id=13568. */ | |
b98664d3 | 24548 | complaint (_("recursive DW_MACRO_import in " |
8fc3fc34 TT |
24549 | ".debug_macro section")); |
24550 | } | |
24551 | else | |
24552 | { | |
d521ce57 | 24553 | *slot = (void *) new_mac_ptr; |
36586728 | 24554 | |
804d2729 | 24555 | dwarf_decode_macro_bytes (cu, include_bfd, new_mac_ptr, |
43f3e411 | 24556 | include_mac_end, current_file, lh, |
36586728 | 24557 | section, section_is_gnu, is_dwz, |
4d663531 | 24558 | offset_size, include_hash); |
8fc3fc34 | 24559 | |
d521ce57 | 24560 | htab_remove_elt (include_hash, (void *) new_mac_ptr); |
8fc3fc34 | 24561 | } |
cf2c3c16 TT |
24562 | } |
24563 | break; | |
24564 | ||
2e276125 | 24565 | case DW_MACINFO_vendor_ext: |
cf2c3c16 TT |
24566 | if (!section_is_gnu) |
24567 | { | |
24568 | unsigned int bytes_read; | |
2e276125 | 24569 | |
ac298888 TT |
24570 | /* This reads the constant, but since we don't recognize |
24571 | any vendor extensions, we ignore it. */ | |
24572 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
cf2c3c16 TT |
24573 | mac_ptr += bytes_read; |
24574 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
24575 | mac_ptr += bytes_read; | |
2e276125 | 24576 | |
cf2c3c16 TT |
24577 | /* We don't recognize any vendor extensions. */ |
24578 | break; | |
24579 | } | |
24580 | /* FALLTHROUGH */ | |
24581 | ||
24582 | default: | |
24583 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 24584 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
24585 | section); |
24586 | if (mac_ptr == NULL) | |
24587 | return; | |
24588 | break; | |
2e276125 | 24589 | } |
132448f8 | 24590 | DIAGNOSTIC_POP |
757a13d0 | 24591 | } while (macinfo_type != 0); |
2e276125 | 24592 | } |
8e19ed76 | 24593 | |
cf2c3c16 | 24594 | static void |
09262596 | 24595 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, |
43f3e411 | 24596 | int section_is_gnu) |
cf2c3c16 | 24597 | { |
518817b3 SM |
24598 | struct dwarf2_per_objfile *dwarf2_per_objfile |
24599 | = cu->per_cu->dwarf2_per_objfile; | |
bb5ed363 | 24600 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
09262596 DE |
24601 | struct line_header *lh = cu->line_header; |
24602 | bfd *abfd; | |
d521ce57 | 24603 | const gdb_byte *mac_ptr, *mac_end; |
cf2c3c16 TT |
24604 | struct macro_source_file *current_file = 0; |
24605 | enum dwarf_macro_record_type macinfo_type; | |
24606 | unsigned int offset_size = cu->header.offset_size; | |
d521ce57 | 24607 | const gdb_byte *opcode_definitions[256]; |
8fc3fc34 | 24608 | void **slot; |
09262596 DE |
24609 | struct dwarf2_section_info *section; |
24610 | const char *section_name; | |
24611 | ||
24612 | if (cu->dwo_unit != NULL) | |
24613 | { | |
24614 | if (section_is_gnu) | |
24615 | { | |
24616 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
24617 | section_name = ".debug_macro.dwo"; | |
24618 | } | |
24619 | else | |
24620 | { | |
24621 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
24622 | section_name = ".debug_macinfo.dwo"; | |
24623 | } | |
24624 | } | |
24625 | else | |
24626 | { | |
24627 | if (section_is_gnu) | |
24628 | { | |
24629 | section = &dwarf2_per_objfile->macro; | |
24630 | section_name = ".debug_macro"; | |
24631 | } | |
24632 | else | |
24633 | { | |
24634 | section = &dwarf2_per_objfile->macinfo; | |
24635 | section_name = ".debug_macinfo"; | |
24636 | } | |
24637 | } | |
cf2c3c16 | 24638 | |
bb5ed363 | 24639 | dwarf2_read_section (objfile, section); |
cf2c3c16 TT |
24640 | if (section->buffer == NULL) |
24641 | { | |
b98664d3 | 24642 | complaint (_("missing %s section"), section_name); |
cf2c3c16 TT |
24643 | return; |
24644 | } | |
a32a8923 | 24645 | abfd = get_section_bfd_owner (section); |
cf2c3c16 TT |
24646 | |
24647 | /* First pass: Find the name of the base filename. | |
24648 | This filename is needed in order to process all macros whose definition | |
24649 | (or undefinition) comes from the command line. These macros are defined | |
24650 | before the first DW_MACINFO_start_file entry, and yet still need to be | |
24651 | associated to the base file. | |
24652 | ||
24653 | To determine the base file name, we scan the macro definitions until we | |
24654 | reach the first DW_MACINFO_start_file entry. We then initialize | |
24655 | CURRENT_FILE accordingly so that any macro definition found before the | |
24656 | first DW_MACINFO_start_file can still be associated to the base file. */ | |
24657 | ||
24658 | mac_ptr = section->buffer + offset; | |
24659 | mac_end = section->buffer + section->size; | |
24660 | ||
24661 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, | |
24662 | &offset_size, section_is_gnu); | |
24663 | if (mac_ptr == NULL) | |
24664 | { | |
24665 | /* We already issued a complaint. */ | |
24666 | return; | |
24667 | } | |
24668 | ||
24669 | do | |
24670 | { | |
24671 | /* Do we at least have room for a macinfo type byte? */ | |
24672 | if (mac_ptr >= mac_end) | |
24673 | { | |
24674 | /* Complaint is printed during the second pass as GDB will probably | |
24675 | stop the first pass earlier upon finding | |
24676 | DW_MACINFO_start_file. */ | |
24677 | break; | |
24678 | } | |
24679 | ||
aead7601 | 24680 | macinfo_type = (enum dwarf_macro_record_type) read_1_byte (abfd, mac_ptr); |
cf2c3c16 TT |
24681 | mac_ptr++; |
24682 | ||
24683 | /* Note that we rely on the fact that the corresponding GNU and | |
24684 | DWARF constants are the same. */ | |
132448f8 SM |
24685 | DIAGNOSTIC_PUSH |
24686 | DIAGNOSTIC_IGNORE_SWITCH_DIFFERENT_ENUM_TYPES | |
cf2c3c16 TT |
24687 | switch (macinfo_type) |
24688 | { | |
24689 | /* A zero macinfo type indicates the end of the macro | |
24690 | information. */ | |
24691 | case 0: | |
24692 | break; | |
24693 | ||
0af92d60 JK |
24694 | case DW_MACRO_define: |
24695 | case DW_MACRO_undef: | |
cf2c3c16 TT |
24696 | /* Only skip the data by MAC_PTR. */ |
24697 | { | |
24698 | unsigned int bytes_read; | |
24699 | ||
24700 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24701 | mac_ptr += bytes_read; | |
24702 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
24703 | mac_ptr += bytes_read; | |
24704 | } | |
24705 | break; | |
24706 | ||
0af92d60 | 24707 | case DW_MACRO_start_file: |
cf2c3c16 TT |
24708 | { |
24709 | unsigned int bytes_read; | |
24710 | int line, file; | |
24711 | ||
24712 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24713 | mac_ptr += bytes_read; | |
24714 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24715 | mac_ptr += bytes_read; | |
24716 | ||
804d2729 | 24717 | current_file = macro_start_file (cu, file, line, current_file, lh); |
cf2c3c16 TT |
24718 | } |
24719 | break; | |
24720 | ||
0af92d60 | 24721 | case DW_MACRO_end_file: |
cf2c3c16 TT |
24722 | /* No data to skip by MAC_PTR. */ |
24723 | break; | |
24724 | ||
0af92d60 JK |
24725 | case DW_MACRO_define_strp: |
24726 | case DW_MACRO_undef_strp: | |
24727 | case DW_MACRO_define_sup: | |
24728 | case DW_MACRO_undef_sup: | |
cf2c3c16 TT |
24729 | { |
24730 | unsigned int bytes_read; | |
24731 | ||
24732 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24733 | mac_ptr += bytes_read; | |
24734 | mac_ptr += offset_size; | |
24735 | } | |
24736 | break; | |
24737 | ||
0af92d60 JK |
24738 | case DW_MACRO_import: |
24739 | case DW_MACRO_import_sup: | |
cf2c3c16 | 24740 | /* Note that, according to the spec, a transparent include |
0af92d60 | 24741 | chain cannot call DW_MACRO_start_file. So, we can just |
cf2c3c16 TT |
24742 | skip this opcode. */ |
24743 | mac_ptr += offset_size; | |
24744 | break; | |
24745 | ||
24746 | case DW_MACINFO_vendor_ext: | |
24747 | /* Only skip the data by MAC_PTR. */ | |
24748 | if (!section_is_gnu) | |
24749 | { | |
24750 | unsigned int bytes_read; | |
24751 | ||
24752 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24753 | mac_ptr += bytes_read; | |
24754 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
24755 | mac_ptr += bytes_read; | |
24756 | } | |
24757 | /* FALLTHROUGH */ | |
24758 | ||
24759 | default: | |
24760 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 24761 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
24762 | section); |
24763 | if (mac_ptr == NULL) | |
24764 | return; | |
24765 | break; | |
24766 | } | |
132448f8 | 24767 | DIAGNOSTIC_POP |
cf2c3c16 TT |
24768 | } while (macinfo_type != 0 && current_file == NULL); |
24769 | ||
24770 | /* Second pass: Process all entries. | |
24771 | ||
24772 | Use the AT_COMMAND_LINE flag to determine whether we are still processing | |
24773 | command-line macro definitions/undefinitions. This flag is unset when we | |
24774 | reach the first DW_MACINFO_start_file entry. */ | |
24775 | ||
fc4007c9 TT |
24776 | htab_up include_hash (htab_create_alloc (1, htab_hash_pointer, |
24777 | htab_eq_pointer, | |
24778 | NULL, xcalloc, xfree)); | |
8fc3fc34 | 24779 | mac_ptr = section->buffer + offset; |
fc4007c9 | 24780 | slot = htab_find_slot (include_hash.get (), mac_ptr, INSERT); |
d521ce57 | 24781 | *slot = (void *) mac_ptr; |
804d2729 | 24782 | dwarf_decode_macro_bytes (cu, abfd, mac_ptr, mac_end, |
43f3e411 | 24783 | current_file, lh, section, |
fc4007c9 TT |
24784 | section_is_gnu, 0, offset_size, |
24785 | include_hash.get ()); | |
cf2c3c16 TT |
24786 | } |
24787 | ||
8e19ed76 | 24788 | /* Check if the attribute's form is a DW_FORM_block* |
0963b4bd | 24789 | if so return true else false. */ |
380bca97 | 24790 | |
8e19ed76 | 24791 | static int |
6e5a29e1 | 24792 | attr_form_is_block (const struct attribute *attr) |
8e19ed76 PS |
24793 | { |
24794 | return (attr == NULL ? 0 : | |
24795 | attr->form == DW_FORM_block1 | |
24796 | || attr->form == DW_FORM_block2 | |
24797 | || attr->form == DW_FORM_block4 | |
2dc7f7b3 TT |
24798 | || attr->form == DW_FORM_block |
24799 | || attr->form == DW_FORM_exprloc); | |
8e19ed76 | 24800 | } |
4c2df51b | 24801 | |
c6a0999f JB |
24802 | /* Return non-zero if ATTR's value is a section offset --- classes |
24803 | lineptr, loclistptr, macptr or rangelistptr --- or zero, otherwise. | |
24804 | You may use DW_UNSND (attr) to retrieve such offsets. | |
24805 | ||
24806 | Section 7.5.4, "Attribute Encodings", explains that no attribute | |
24807 | may have a value that belongs to more than one of these classes; it | |
24808 | would be ambiguous if we did, because we use the same forms for all | |
24809 | of them. */ | |
380bca97 | 24810 | |
3690dd37 | 24811 | static int |
6e5a29e1 | 24812 | attr_form_is_section_offset (const struct attribute *attr) |
3690dd37 JB |
24813 | { |
24814 | return (attr->form == DW_FORM_data4 | |
2dc7f7b3 TT |
24815 | || attr->form == DW_FORM_data8 |
24816 | || attr->form == DW_FORM_sec_offset); | |
3690dd37 JB |
24817 | } |
24818 | ||
3690dd37 JB |
24819 | /* Return non-zero if ATTR's value falls in the 'constant' class, or |
24820 | zero otherwise. When this function returns true, you can apply | |
24821 | dwarf2_get_attr_constant_value to it. | |
24822 | ||
24823 | However, note that for some attributes you must check | |
24824 | attr_form_is_section_offset before using this test. DW_FORM_data4 | |
24825 | and DW_FORM_data8 are members of both the constant class, and of | |
24826 | the classes that contain offsets into other debug sections | |
24827 | (lineptr, loclistptr, macptr or rangelistptr). The DWARF spec says | |
24828 | that, if an attribute's can be either a constant or one of the | |
24829 | section offset classes, DW_FORM_data4 and DW_FORM_data8 should be | |
0224619f JK |
24830 | taken as section offsets, not constants. |
24831 | ||
24832 | DW_FORM_data16 is not considered as dwarf2_get_attr_constant_value | |
24833 | cannot handle that. */ | |
380bca97 | 24834 | |
3690dd37 | 24835 | static int |
6e5a29e1 | 24836 | attr_form_is_constant (const struct attribute *attr) |
3690dd37 JB |
24837 | { |
24838 | switch (attr->form) | |
24839 | { | |
24840 | case DW_FORM_sdata: | |
24841 | case DW_FORM_udata: | |
24842 | case DW_FORM_data1: | |
24843 | case DW_FORM_data2: | |
24844 | case DW_FORM_data4: | |
24845 | case DW_FORM_data8: | |
663c44ac | 24846 | case DW_FORM_implicit_const: |
3690dd37 JB |
24847 | return 1; |
24848 | default: | |
24849 | return 0; | |
24850 | } | |
24851 | } | |
24852 | ||
7771576e SA |
24853 | |
24854 | /* DW_ADDR is always stored already as sect_offset; despite for the forms | |
24855 | besides DW_FORM_ref_addr it is stored as cu_offset in the DWARF file. */ | |
24856 | ||
24857 | static int | |
6e5a29e1 | 24858 | attr_form_is_ref (const struct attribute *attr) |
7771576e SA |
24859 | { |
24860 | switch (attr->form) | |
24861 | { | |
24862 | case DW_FORM_ref_addr: | |
24863 | case DW_FORM_ref1: | |
24864 | case DW_FORM_ref2: | |
24865 | case DW_FORM_ref4: | |
24866 | case DW_FORM_ref8: | |
24867 | case DW_FORM_ref_udata: | |
24868 | case DW_FORM_GNU_ref_alt: | |
24869 | return 1; | |
24870 | default: | |
24871 | return 0; | |
24872 | } | |
24873 | } | |
24874 | ||
3019eac3 DE |
24875 | /* Return the .debug_loc section to use for CU. |
24876 | For DWO files use .debug_loc.dwo. */ | |
24877 | ||
24878 | static struct dwarf2_section_info * | |
24879 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
24880 | { | |
518817b3 SM |
24881 | struct dwarf2_per_objfile *dwarf2_per_objfile |
24882 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 24883 | |
3019eac3 | 24884 | if (cu->dwo_unit) |
43988095 JK |
24885 | { |
24886 | struct dwo_sections *sections = &cu->dwo_unit->dwo_file->sections; | |
24887 | ||
24888 | return cu->header.version >= 5 ? §ions->loclists : §ions->loc; | |
24889 | } | |
24890 | return (cu->header.version >= 5 ? &dwarf2_per_objfile->loclists | |
24891 | : &dwarf2_per_objfile->loc); | |
3019eac3 DE |
24892 | } |
24893 | ||
8cf6f0b1 TT |
24894 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
24895 | ||
24896 | static void | |
24897 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
24898 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 24899 | const struct attribute *attr) |
8cf6f0b1 | 24900 | { |
518817b3 SM |
24901 | struct dwarf2_per_objfile *dwarf2_per_objfile |
24902 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 DE |
24903 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
24904 | ||
24905 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
8cf6f0b1 TT |
24906 | |
24907 | baton->per_cu = cu->per_cu; | |
24908 | gdb_assert (baton->per_cu); | |
24909 | /* We don't know how long the location list is, but make sure we | |
24910 | don't run off the edge of the section. */ | |
3019eac3 DE |
24911 | baton->size = section->size - DW_UNSND (attr); |
24912 | baton->data = section->buffer + DW_UNSND (attr); | |
8cf6f0b1 | 24913 | baton->base_address = cu->base_address; |
f664829e | 24914 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
24915 | } |
24916 | ||
4c2df51b | 24917 | static void |
ff39bb5e | 24918 | dwarf2_symbol_mark_computed (const struct attribute *attr, struct symbol *sym, |
f1e6e072 | 24919 | struct dwarf2_cu *cu, int is_block) |
4c2df51b | 24920 | { |
518817b3 SM |
24921 | struct dwarf2_per_objfile *dwarf2_per_objfile |
24922 | = cu->per_cu->dwarf2_per_objfile; | |
bb5ed363 | 24923 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 | 24924 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 24925 | |
3690dd37 | 24926 | if (attr_form_is_section_offset (attr) |
3019eac3 | 24927 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
24928 | the section. If so, fall through to the complaint in the |
24929 | other branch. */ | |
3019eac3 | 24930 | && DW_UNSND (attr) < dwarf2_section_size (objfile, section)) |
4c2df51b | 24931 | { |
0d53c4c4 | 24932 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 24933 | |
8d749320 | 24934 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_loclist_baton); |
4c2df51b | 24935 | |
8cf6f0b1 | 24936 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 24937 | |
d00adf39 | 24938 | if (cu->base_known == 0) |
b98664d3 | 24939 | complaint (_("Location list used without " |
3e43a32a | 24940 | "specifying the CU base address.")); |
4c2df51b | 24941 | |
f1e6e072 TT |
24942 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
24943 | ? dwarf2_loclist_block_index | |
24944 | : dwarf2_loclist_index); | |
0d53c4c4 DJ |
24945 | SYMBOL_LOCATION_BATON (sym) = baton; |
24946 | } | |
24947 | else | |
24948 | { | |
24949 | struct dwarf2_locexpr_baton *baton; | |
24950 | ||
8d749320 | 24951 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
ae0d2f24 UW |
24952 | baton->per_cu = cu->per_cu; |
24953 | gdb_assert (baton->per_cu); | |
0d53c4c4 DJ |
24954 | |
24955 | if (attr_form_is_block (attr)) | |
24956 | { | |
24957 | /* Note that we're just copying the block's data pointer | |
24958 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
24959 | info_buffer for SYM's objfile; right now we never release |
24960 | that buffer, but when we do clean up properly this may | |
24961 | need to change. */ | |
0d53c4c4 DJ |
24962 | baton->size = DW_BLOCK (attr)->size; |
24963 | baton->data = DW_BLOCK (attr)->data; | |
24964 | } | |
24965 | else | |
24966 | { | |
24967 | dwarf2_invalid_attrib_class_complaint ("location description", | |
24968 | SYMBOL_NATURAL_NAME (sym)); | |
24969 | baton->size = 0; | |
0d53c4c4 | 24970 | } |
6e70227d | 24971 | |
f1e6e072 TT |
24972 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
24973 | ? dwarf2_locexpr_block_index | |
24974 | : dwarf2_locexpr_index); | |
0d53c4c4 DJ |
24975 | SYMBOL_LOCATION_BATON (sym) = baton; |
24976 | } | |
4c2df51b | 24977 | } |
6502dd73 | 24978 | |
9aa1f1e3 TT |
24979 | /* Return the OBJFILE associated with the compilation unit CU. If CU |
24980 | came from a separate debuginfo file, then the master objfile is | |
24981 | returned. */ | |
ae0d2f24 UW |
24982 | |
24983 | struct objfile * | |
24984 | dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *per_cu) | |
24985 | { | |
e3b94546 | 24986 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
ae0d2f24 UW |
24987 | |
24988 | /* Return the master objfile, so that we can report and look up the | |
24989 | correct file containing this variable. */ | |
24990 | if (objfile->separate_debug_objfile_backlink) | |
24991 | objfile = objfile->separate_debug_objfile_backlink; | |
24992 | ||
24993 | return objfile; | |
24994 | } | |
24995 | ||
96408a79 SA |
24996 | /* Return comp_unit_head for PER_CU, either already available in PER_CU->CU |
24997 | (CU_HEADERP is unused in such case) or prepare a temporary copy at | |
24998 | CU_HEADERP first. */ | |
24999 | ||
25000 | static const struct comp_unit_head * | |
25001 | per_cu_header_read_in (struct comp_unit_head *cu_headerp, | |
25002 | struct dwarf2_per_cu_data *per_cu) | |
25003 | { | |
d521ce57 | 25004 | const gdb_byte *info_ptr; |
96408a79 SA |
25005 | |
25006 | if (per_cu->cu) | |
25007 | return &per_cu->cu->header; | |
25008 | ||
9c541725 | 25009 | info_ptr = per_cu->section->buffer + to_underlying (per_cu->sect_off); |
96408a79 SA |
25010 | |
25011 | memset (cu_headerp, 0, sizeof (*cu_headerp)); | |
43988095 JK |
25012 | read_comp_unit_head (cu_headerp, info_ptr, per_cu->section, |
25013 | rcuh_kind::COMPILE); | |
96408a79 SA |
25014 | |
25015 | return cu_headerp; | |
25016 | } | |
25017 | ||
ae0d2f24 UW |
25018 | /* Return the address size given in the compilation unit header for CU. */ |
25019 | ||
98714339 | 25020 | int |
ae0d2f24 UW |
25021 | dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *per_cu) |
25022 | { | |
96408a79 SA |
25023 | struct comp_unit_head cu_header_local; |
25024 | const struct comp_unit_head *cu_headerp; | |
c471e790 | 25025 | |
96408a79 SA |
25026 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
25027 | ||
25028 | return cu_headerp->addr_size; | |
ae0d2f24 UW |
25029 | } |
25030 | ||
9eae7c52 TT |
25031 | /* Return the offset size given in the compilation unit header for CU. */ |
25032 | ||
25033 | int | |
25034 | dwarf2_per_cu_offset_size (struct dwarf2_per_cu_data *per_cu) | |
25035 | { | |
96408a79 SA |
25036 | struct comp_unit_head cu_header_local; |
25037 | const struct comp_unit_head *cu_headerp; | |
9c6c53f7 | 25038 | |
96408a79 SA |
25039 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
25040 | ||
25041 | return cu_headerp->offset_size; | |
25042 | } | |
25043 | ||
25044 | /* See its dwarf2loc.h declaration. */ | |
25045 | ||
25046 | int | |
25047 | dwarf2_per_cu_ref_addr_size (struct dwarf2_per_cu_data *per_cu) | |
25048 | { | |
25049 | struct comp_unit_head cu_header_local; | |
25050 | const struct comp_unit_head *cu_headerp; | |
25051 | ||
25052 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); | |
25053 | ||
25054 | if (cu_headerp->version == 2) | |
25055 | return cu_headerp->addr_size; | |
25056 | else | |
25057 | return cu_headerp->offset_size; | |
181cebd4 JK |
25058 | } |
25059 | ||
9aa1f1e3 TT |
25060 | /* Return the text offset of the CU. The returned offset comes from |
25061 | this CU's objfile. If this objfile came from a separate debuginfo | |
25062 | file, then the offset may be different from the corresponding | |
25063 | offset in the parent objfile. */ | |
25064 | ||
25065 | CORE_ADDR | |
25066 | dwarf2_per_cu_text_offset (struct dwarf2_per_cu_data *per_cu) | |
25067 | { | |
e3b94546 | 25068 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
9aa1f1e3 TT |
25069 | |
25070 | return ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
25071 | } | |
25072 | ||
43988095 JK |
25073 | /* Return DWARF version number of PER_CU. */ |
25074 | ||
25075 | short | |
25076 | dwarf2_version (struct dwarf2_per_cu_data *per_cu) | |
25077 | { | |
25078 | return per_cu->dwarf_version; | |
25079 | } | |
25080 | ||
348e048f DE |
25081 | /* Locate the .debug_info compilation unit from CU's objfile which contains |
25082 | the DIE at OFFSET. Raises an error on failure. */ | |
ae038cb0 DJ |
25083 | |
25084 | static struct dwarf2_per_cu_data * | |
9c541725 | 25085 | dwarf2_find_containing_comp_unit (sect_offset sect_off, |
36586728 | 25086 | unsigned int offset_in_dwz, |
ed2dc618 | 25087 | struct dwarf2_per_objfile *dwarf2_per_objfile) |
ae038cb0 DJ |
25088 | { |
25089 | struct dwarf2_per_cu_data *this_cu; | |
25090 | int low, high; | |
25091 | ||
ae038cb0 | 25092 | low = 0; |
b76e467d | 25093 | high = dwarf2_per_objfile->all_comp_units.size () - 1; |
ae038cb0 DJ |
25094 | while (high > low) |
25095 | { | |
36586728 | 25096 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 25097 | int mid = low + (high - low) / 2; |
9a619af0 | 25098 | |
36586728 | 25099 | mid_cu = dwarf2_per_objfile->all_comp_units[mid]; |
36586728 | 25100 | if (mid_cu->is_dwz > offset_in_dwz |
81fbbaf9 | 25101 | || (mid_cu->is_dwz == offset_in_dwz |
45b8ae0c | 25102 | && mid_cu->sect_off + mid_cu->length >= sect_off)) |
ae038cb0 DJ |
25103 | high = mid; |
25104 | else | |
25105 | low = mid + 1; | |
25106 | } | |
25107 | gdb_assert (low == high); | |
36586728 | 25108 | this_cu = dwarf2_per_objfile->all_comp_units[low]; |
45b8ae0c | 25109 | if (this_cu->is_dwz != offset_in_dwz || this_cu->sect_off > sect_off) |
ae038cb0 | 25110 | { |
36586728 | 25111 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 | 25112 | error (_("Dwarf Error: could not find partial DIE containing " |
9d8780f0 SM |
25113 | "offset %s [in module %s]"), |
25114 | sect_offset_str (sect_off), | |
ed2dc618 | 25115 | bfd_get_filename (dwarf2_per_objfile->objfile->obfd)); |
10b3939b | 25116 | |
9c541725 PA |
25117 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->sect_off |
25118 | <= sect_off); | |
ae038cb0 DJ |
25119 | return dwarf2_per_objfile->all_comp_units[low-1]; |
25120 | } | |
25121 | else | |
25122 | { | |
25123 | this_cu = dwarf2_per_objfile->all_comp_units[low]; | |
b76e467d | 25124 | if (low == dwarf2_per_objfile->all_comp_units.size () - 1 |
9c541725 | 25125 | && sect_off >= this_cu->sect_off + this_cu->length) |
9d8780f0 | 25126 | error (_("invalid dwarf2 offset %s"), sect_offset_str (sect_off)); |
9c541725 | 25127 | gdb_assert (sect_off < this_cu->sect_off + this_cu->length); |
ae038cb0 DJ |
25128 | return this_cu; |
25129 | } | |
25130 | } | |
25131 | ||
23745b47 | 25132 | /* Initialize dwarf2_cu CU, owned by PER_CU. */ |
93311388 | 25133 | |
fcd3b13d SM |
25134 | dwarf2_cu::dwarf2_cu (struct dwarf2_per_cu_data *per_cu_) |
25135 | : per_cu (per_cu_), | |
9068261f AB |
25136 | mark (false), |
25137 | has_loclist (false), | |
25138 | checked_producer (false), | |
25139 | producer_is_gxx_lt_4_6 (false), | |
25140 | producer_is_gcc_lt_4_3 (false), | |
eb77c9df | 25141 | producer_is_icc (false), |
9068261f | 25142 | producer_is_icc_lt_14 (false), |
c258c396 | 25143 | producer_is_codewarrior (false), |
9068261f | 25144 | processing_has_namespace_info (false) |
93311388 | 25145 | { |
fcd3b13d SM |
25146 | per_cu->cu = this; |
25147 | } | |
25148 | ||
25149 | /* Destroy a dwarf2_cu. */ | |
25150 | ||
25151 | dwarf2_cu::~dwarf2_cu () | |
25152 | { | |
25153 | per_cu->cu = NULL; | |
9816fde3 JK |
25154 | } |
25155 | ||
25156 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
25157 | ||
25158 | static void | |
95554aad TT |
25159 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
25160 | enum language pretend_language) | |
9816fde3 JK |
25161 | { |
25162 | struct attribute *attr; | |
25163 | ||
25164 | /* Set the language we're debugging. */ | |
25165 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
25166 | if (attr) | |
25167 | set_cu_language (DW_UNSND (attr), cu); | |
25168 | else | |
9cded63f | 25169 | { |
95554aad | 25170 | cu->language = pretend_language; |
9cded63f TT |
25171 | cu->language_defn = language_def (cu->language); |
25172 | } | |
dee91e82 | 25173 | |
7d45c7c3 | 25174 | cu->producer = dwarf2_string_attr (comp_unit_die, DW_AT_producer, cu); |
93311388 DE |
25175 | } |
25176 | ||
ae038cb0 DJ |
25177 | /* Increase the age counter on each cached compilation unit, and free |
25178 | any that are too old. */ | |
25179 | ||
25180 | static void | |
ed2dc618 | 25181 | age_cached_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
ae038cb0 DJ |
25182 | { |
25183 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
25184 | ||
25185 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
25186 | per_cu = dwarf2_per_objfile->read_in_chain; | |
25187 | while (per_cu != NULL) | |
25188 | { | |
25189 | per_cu->cu->last_used ++; | |
b4f54984 | 25190 | if (per_cu->cu->last_used <= dwarf_max_cache_age) |
ae038cb0 DJ |
25191 | dwarf2_mark (per_cu->cu); |
25192 | per_cu = per_cu->cu->read_in_chain; | |
25193 | } | |
25194 | ||
25195 | per_cu = dwarf2_per_objfile->read_in_chain; | |
25196 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
25197 | while (per_cu != NULL) | |
25198 | { | |
25199 | struct dwarf2_per_cu_data *next_cu; | |
25200 | ||
25201 | next_cu = per_cu->cu->read_in_chain; | |
25202 | ||
25203 | if (!per_cu->cu->mark) | |
25204 | { | |
fcd3b13d | 25205 | delete per_cu->cu; |
ae038cb0 DJ |
25206 | *last_chain = next_cu; |
25207 | } | |
25208 | else | |
25209 | last_chain = &per_cu->cu->read_in_chain; | |
25210 | ||
25211 | per_cu = next_cu; | |
25212 | } | |
25213 | } | |
25214 | ||
25215 | /* Remove a single compilation unit from the cache. */ | |
25216 | ||
25217 | static void | |
dee91e82 | 25218 | free_one_cached_comp_unit (struct dwarf2_per_cu_data *target_per_cu) |
ae038cb0 DJ |
25219 | { |
25220 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
ed2dc618 SM |
25221 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25222 | = target_per_cu->dwarf2_per_objfile; | |
ae038cb0 DJ |
25223 | |
25224 | per_cu = dwarf2_per_objfile->read_in_chain; | |
25225 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
25226 | while (per_cu != NULL) | |
25227 | { | |
25228 | struct dwarf2_per_cu_data *next_cu; | |
25229 | ||
25230 | next_cu = per_cu->cu->read_in_chain; | |
25231 | ||
dee91e82 | 25232 | if (per_cu == target_per_cu) |
ae038cb0 | 25233 | { |
fcd3b13d | 25234 | delete per_cu->cu; |
dee91e82 | 25235 | per_cu->cu = NULL; |
ae038cb0 DJ |
25236 | *last_chain = next_cu; |
25237 | break; | |
25238 | } | |
25239 | else | |
25240 | last_chain = &per_cu->cu->read_in_chain; | |
25241 | ||
25242 | per_cu = next_cu; | |
25243 | } | |
25244 | } | |
25245 | ||
d95d3aef | 25246 | /* Cleanup function for the dwarf2_per_objfile data. */ |
fe3e1990 | 25247 | |
d95d3aef TT |
25248 | static void |
25249 | dwarf2_free_objfile (struct objfile *objfile, void *datum) | |
fe3e1990 | 25250 | { |
ed2dc618 | 25251 | struct dwarf2_per_objfile *dwarf2_per_objfile |
d95d3aef | 25252 | = static_cast<struct dwarf2_per_objfile *> (datum); |
fe3e1990 | 25253 | |
fd90ace4 | 25254 | delete dwarf2_per_objfile; |
fe3e1990 DJ |
25255 | } |
25256 | ||
dee91e82 DE |
25257 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
25258 | We store these in a hash table separate from the DIEs, and preserve them | |
25259 | when the DIEs are flushed out of cache. | |
25260 | ||
25261 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 | 25262 | uniquely identify the type. A file may have multiple .debug_types sections, |
c88ee1f0 DE |
25263 | or the type may come from a DWO file. Furthermore, while it's more logical |
25264 | to use per_cu->section+offset, with Fission the section with the data is in | |
25265 | the DWO file but we don't know that section at the point we need it. | |
25266 | We have to use something in dwarf2_per_cu_data (or the pointer to it) | |
25267 | because we can enter the lookup routine, get_die_type_at_offset, from | |
25268 | outside this file, and thus won't necessarily have PER_CU->cu. | |
25269 | Fortunately, PER_CU is stable for the life of the objfile. */ | |
1c379e20 | 25270 | |
dee91e82 | 25271 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 25272 | { |
dee91e82 | 25273 | const struct dwarf2_per_cu_data *per_cu; |
9c541725 | 25274 | sect_offset sect_off; |
1c379e20 DJ |
25275 | struct type *type; |
25276 | }; | |
25277 | ||
dee91e82 | 25278 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
25279 | |
25280 | static hashval_t | |
dee91e82 | 25281 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 25282 | { |
9a3c8263 SM |
25283 | const struct dwarf2_per_cu_offset_and_type *ofs |
25284 | = (const struct dwarf2_per_cu_offset_and_type *) item; | |
9a619af0 | 25285 | |
9c541725 | 25286 | return (uintptr_t) ofs->per_cu + to_underlying (ofs->sect_off); |
1c379e20 DJ |
25287 | } |
25288 | ||
dee91e82 | 25289 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
25290 | |
25291 | static int | |
dee91e82 | 25292 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 25293 | { |
9a3c8263 SM |
25294 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs |
25295 | = (const struct dwarf2_per_cu_offset_and_type *) item_lhs; | |
25296 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs | |
25297 | = (const struct dwarf2_per_cu_offset_and_type *) item_rhs; | |
9a619af0 | 25298 | |
dee91e82 | 25299 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
9c541725 | 25300 | && ofs_lhs->sect_off == ofs_rhs->sect_off); |
1c379e20 DJ |
25301 | } |
25302 | ||
25303 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
25304 | table if necessary. For convenience, return TYPE. |
25305 | ||
25306 | The DIEs reading must have careful ordering to: | |
25307 | * Not cause infite loops trying to read in DIEs as a prerequisite for | |
25308 | reading current DIE. | |
25309 | * Not trying to dereference contents of still incompletely read in types | |
25310 | while reading in other DIEs. | |
25311 | * Enable referencing still incompletely read in types just by a pointer to | |
25312 | the type without accessing its fields. | |
25313 | ||
25314 | Therefore caller should follow these rules: | |
25315 | * Try to fetch any prerequisite types we may need to build this DIE type | |
25316 | before building the type and calling set_die_type. | |
e71ec853 | 25317 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
25318 | possible before fetching more types to complete the current type. |
25319 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 25320 | |
f792889a | 25321 | static struct type * |
1c379e20 DJ |
25322 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
25323 | { | |
518817b3 SM |
25324 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25325 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 25326 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
ed2dc618 | 25327 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3cdcd0ce JB |
25328 | struct attribute *attr; |
25329 | struct dynamic_prop prop; | |
1c379e20 | 25330 | |
b4ba55a1 JB |
25331 | /* For Ada types, make sure that the gnat-specific data is always |
25332 | initialized (if not already set). There are a few types where | |
25333 | we should not be doing so, because the type-specific area is | |
25334 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
25335 | where the type-specific area is used to store the floatformat). | |
25336 | But this is not a problem, because the gnat-specific information | |
25337 | is actually not needed for these types. */ | |
25338 | if (need_gnat_info (cu) | |
25339 | && TYPE_CODE (type) != TYPE_CODE_FUNC | |
25340 | && TYPE_CODE (type) != TYPE_CODE_FLT | |
09e2d7c7 DE |
25341 | && TYPE_CODE (type) != TYPE_CODE_METHODPTR |
25342 | && TYPE_CODE (type) != TYPE_CODE_MEMBERPTR | |
25343 | && TYPE_CODE (type) != TYPE_CODE_METHOD | |
b4ba55a1 JB |
25344 | && !HAVE_GNAT_AUX_INFO (type)) |
25345 | INIT_GNAT_SPECIFIC (type); | |
25346 | ||
3f2f83dd KB |
25347 | /* Read DW_AT_allocated and set in type. */ |
25348 | attr = dwarf2_attr (die, DW_AT_allocated, cu); | |
25349 | if (attr_form_is_block (attr)) | |
25350 | { | |
25351 | if (attr_to_dynamic_prop (attr, die, cu, &prop)) | |
50a82047 | 25352 | add_dyn_prop (DYN_PROP_ALLOCATED, prop, type); |
3f2f83dd KB |
25353 | } |
25354 | else if (attr != NULL) | |
25355 | { | |
b98664d3 | 25356 | complaint (_("DW_AT_allocated has the wrong form (%s) at DIE %s"), |
9c541725 | 25357 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), |
9d8780f0 | 25358 | sect_offset_str (die->sect_off)); |
3f2f83dd KB |
25359 | } |
25360 | ||
25361 | /* Read DW_AT_associated and set in type. */ | |
25362 | attr = dwarf2_attr (die, DW_AT_associated, cu); | |
25363 | if (attr_form_is_block (attr)) | |
25364 | { | |
25365 | if (attr_to_dynamic_prop (attr, die, cu, &prop)) | |
50a82047 | 25366 | add_dyn_prop (DYN_PROP_ASSOCIATED, prop, type); |
3f2f83dd KB |
25367 | } |
25368 | else if (attr != NULL) | |
25369 | { | |
b98664d3 | 25370 | complaint (_("DW_AT_associated has the wrong form (%s) at DIE %s"), |
9c541725 | 25371 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), |
9d8780f0 | 25372 | sect_offset_str (die->sect_off)); |
3f2f83dd KB |
25373 | } |
25374 | ||
3cdcd0ce JB |
25375 | /* Read DW_AT_data_location and set in type. */ |
25376 | attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
25377 | if (attr_to_dynamic_prop (attr, die, cu, &prop)) | |
50a82047 | 25378 | add_dyn_prop (DYN_PROP_DATA_LOCATION, prop, type); |
3cdcd0ce | 25379 | |
dee91e82 | 25380 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 25381 | { |
dee91e82 DE |
25382 | dwarf2_per_objfile->die_type_hash = |
25383 | htab_create_alloc_ex (127, | |
25384 | per_cu_offset_and_type_hash, | |
25385 | per_cu_offset_and_type_eq, | |
25386 | NULL, | |
25387 | &objfile->objfile_obstack, | |
25388 | hashtab_obstack_allocate, | |
25389 | dummy_obstack_deallocate); | |
f792889a | 25390 | } |
1c379e20 | 25391 | |
dee91e82 | 25392 | ofs.per_cu = cu->per_cu; |
9c541725 | 25393 | ofs.sect_off = die->sect_off; |
1c379e20 | 25394 | ofs.type = type; |
dee91e82 DE |
25395 | slot = (struct dwarf2_per_cu_offset_and_type **) |
25396 | htab_find_slot (dwarf2_per_objfile->die_type_hash, &ofs, INSERT); | |
7e314c57 | 25397 | if (*slot) |
b98664d3 | 25398 | complaint (_("A problem internal to GDB: DIE %s has type already set"), |
9d8780f0 | 25399 | sect_offset_str (die->sect_off)); |
8d749320 SM |
25400 | *slot = XOBNEW (&objfile->objfile_obstack, |
25401 | struct dwarf2_per_cu_offset_and_type); | |
1c379e20 | 25402 | **slot = ofs; |
f792889a | 25403 | return type; |
1c379e20 DJ |
25404 | } |
25405 | ||
9c541725 | 25406 | /* Look up the type for the die at SECT_OFF in PER_CU in die_type_hash, |
02142a6c | 25407 | or return NULL if the die does not have a saved type. */ |
1c379e20 DJ |
25408 | |
25409 | static struct type * | |
9c541725 | 25410 | get_die_type_at_offset (sect_offset sect_off, |
673bfd45 | 25411 | struct dwarf2_per_cu_data *per_cu) |
1c379e20 | 25412 | { |
dee91e82 | 25413 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
ed2dc618 | 25414 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
f792889a | 25415 | |
dee91e82 | 25416 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 25417 | return NULL; |
1c379e20 | 25418 | |
dee91e82 | 25419 | ofs.per_cu = per_cu; |
9c541725 | 25420 | ofs.sect_off = sect_off; |
9a3c8263 SM |
25421 | slot = ((struct dwarf2_per_cu_offset_and_type *) |
25422 | htab_find (dwarf2_per_objfile->die_type_hash, &ofs)); | |
1c379e20 DJ |
25423 | if (slot) |
25424 | return slot->type; | |
25425 | else | |
25426 | return NULL; | |
25427 | } | |
25428 | ||
02142a6c | 25429 | /* Look up the type for DIE in CU in die_type_hash, |
673bfd45 DE |
25430 | or return NULL if DIE does not have a saved type. */ |
25431 | ||
25432 | static struct type * | |
25433 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
25434 | { | |
9c541725 | 25435 | return get_die_type_at_offset (die->sect_off, cu->per_cu); |
673bfd45 DE |
25436 | } |
25437 | ||
10b3939b DJ |
25438 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
25439 | ||
25440 | static void | |
25441 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
25442 | struct dwarf2_per_cu_data *ref_per_cu) | |
25443 | { | |
25444 | void **slot; | |
25445 | ||
25446 | if (cu->dependencies == NULL) | |
25447 | cu->dependencies | |
25448 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
25449 | NULL, &cu->comp_unit_obstack, | |
25450 | hashtab_obstack_allocate, | |
25451 | dummy_obstack_deallocate); | |
25452 | ||
25453 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
25454 | if (*slot == NULL) | |
25455 | *slot = ref_per_cu; | |
25456 | } | |
1c379e20 | 25457 | |
f504f079 DE |
25458 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
25459 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
25460 | cache that we must keep because we are keeping CU. */ |
25461 | ||
10b3939b DJ |
25462 | static int |
25463 | dwarf2_mark_helper (void **slot, void *data) | |
25464 | { | |
25465 | struct dwarf2_per_cu_data *per_cu; | |
25466 | ||
25467 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
d07ed419 JK |
25468 | |
25469 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
25470 | reading of the chain. As such dependencies remain valid it is not much | |
25471 | useful to track and undo them during QUIT cleanups. */ | |
25472 | if (per_cu->cu == NULL) | |
25473 | return 1; | |
25474 | ||
10b3939b DJ |
25475 | if (per_cu->cu->mark) |
25476 | return 1; | |
9068261f | 25477 | per_cu->cu->mark = true; |
10b3939b DJ |
25478 | |
25479 | if (per_cu->cu->dependencies != NULL) | |
25480 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
25481 | ||
25482 | return 1; | |
25483 | } | |
25484 | ||
f504f079 DE |
25485 | /* Set the mark field in CU and in every other compilation unit in the |
25486 | cache that we must keep because we are keeping CU. */ | |
25487 | ||
ae038cb0 DJ |
25488 | static void |
25489 | dwarf2_mark (struct dwarf2_cu *cu) | |
25490 | { | |
25491 | if (cu->mark) | |
25492 | return; | |
9068261f | 25493 | cu->mark = true; |
10b3939b DJ |
25494 | if (cu->dependencies != NULL) |
25495 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
25496 | } |
25497 | ||
25498 | static void | |
25499 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
25500 | { | |
25501 | while (per_cu) | |
25502 | { | |
9068261f | 25503 | per_cu->cu->mark = false; |
ae038cb0 DJ |
25504 | per_cu = per_cu->cu->read_in_chain; |
25505 | } | |
72bf9492 DJ |
25506 | } |
25507 | ||
72bf9492 DJ |
25508 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
25509 | is its offset in .debug_info for this objfile. */ | |
25510 | ||
25511 | static hashval_t | |
25512 | partial_die_hash (const void *item) | |
25513 | { | |
9a3c8263 SM |
25514 | const struct partial_die_info *part_die |
25515 | = (const struct partial_die_info *) item; | |
9a619af0 | 25516 | |
9c541725 | 25517 | return to_underlying (part_die->sect_off); |
72bf9492 DJ |
25518 | } |
25519 | ||
25520 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
25521 | are equal if they have the same offset. */ | |
25522 | ||
25523 | static int | |
25524 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
25525 | { | |
9a3c8263 SM |
25526 | const struct partial_die_info *part_die_lhs |
25527 | = (const struct partial_die_info *) item_lhs; | |
25528 | const struct partial_die_info *part_die_rhs | |
25529 | = (const struct partial_die_info *) item_rhs; | |
9a619af0 | 25530 | |
9c541725 | 25531 | return part_die_lhs->sect_off == part_die_rhs->sect_off; |
72bf9492 DJ |
25532 | } |
25533 | ||
3c3bb058 AB |
25534 | struct cmd_list_element *set_dwarf_cmdlist; |
25535 | struct cmd_list_element *show_dwarf_cmdlist; | |
ae038cb0 DJ |
25536 | |
25537 | static void | |
981a3fb3 | 25538 | set_dwarf_cmd (const char *args, int from_tty) |
ae038cb0 | 25539 | { |
b4f54984 | 25540 | help_list (set_dwarf_cmdlist, "maintenance set dwarf ", all_commands, |
635c7e8a | 25541 | gdb_stdout); |
ae038cb0 DJ |
25542 | } |
25543 | ||
25544 | static void | |
981a3fb3 | 25545 | show_dwarf_cmd (const char *args, int from_tty) |
6e70227d | 25546 | { |
b4f54984 | 25547 | cmd_show_list (show_dwarf_cmdlist, from_tty, ""); |
ae038cb0 DJ |
25548 | } |
25549 | ||
cd4fb1b2 | 25550 | int dwarf_always_disassemble; |
437afbb8 | 25551 | |
437afbb8 | 25552 | static void |
cd4fb1b2 SM |
25553 | show_dwarf_always_disassemble (struct ui_file *file, int from_tty, |
25554 | struct cmd_list_element *c, const char *value) | |
9291a0cd | 25555 | { |
cd4fb1b2 SM |
25556 | fprintf_filtered (file, |
25557 | _("Whether to always disassemble " | |
25558 | "DWARF expressions is %s.\n"), | |
25559 | value); | |
9291a0cd TT |
25560 | } |
25561 | ||
9291a0cd | 25562 | static void |
cd4fb1b2 SM |
25563 | show_check_physname (struct ui_file *file, int from_tty, |
25564 | struct cmd_list_element *c, const char *value) | |
9291a0cd | 25565 | { |
cd4fb1b2 SM |
25566 | fprintf_filtered (file, |
25567 | _("Whether to check \"physname\" is %s.\n"), | |
25568 | value); | |
9291a0cd TT |
25569 | } |
25570 | ||
cd4fb1b2 SM |
25571 | void |
25572 | _initialize_dwarf2_read (void) | |
9291a0cd | 25573 | { |
d95d3aef TT |
25574 | dwarf2_objfile_data_key |
25575 | = register_objfile_data_with_cleanup (nullptr, dwarf2_free_objfile); | |
156942c7 | 25576 | |
cd4fb1b2 SM |
25577 | add_prefix_cmd ("dwarf", class_maintenance, set_dwarf_cmd, _("\ |
25578 | Set DWARF specific variables.\n\ | |
25579 | Configure DWARF variables such as the cache size"), | |
25580 | &set_dwarf_cmdlist, "maintenance set dwarf ", | |
25581 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
156942c7 | 25582 | |
cd4fb1b2 SM |
25583 | add_prefix_cmd ("dwarf", class_maintenance, show_dwarf_cmd, _("\ |
25584 | Show DWARF specific variables\n\ | |
25585 | Show DWARF variables such as the cache size"), | |
25586 | &show_dwarf_cmdlist, "maintenance show dwarf ", | |
25587 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
156942c7 | 25588 | |
cd4fb1b2 SM |
25589 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, |
25590 | &dwarf_max_cache_age, _("\ | |
25591 | Set the upper bound on the age of cached DWARF compilation units."), _("\ | |
25592 | Show the upper bound on the age of cached DWARF compilation units."), _("\ | |
25593 | A higher limit means that cached compilation units will be stored\n\ | |
25594 | in memory longer, and more total memory will be used. Zero disables\n\ | |
25595 | caching, which can slow down startup."), | |
25596 | NULL, | |
25597 | show_dwarf_max_cache_age, | |
25598 | &set_dwarf_cmdlist, | |
25599 | &show_dwarf_cmdlist); | |
156942c7 | 25600 | |
cd4fb1b2 SM |
25601 | add_setshow_boolean_cmd ("always-disassemble", class_obscure, |
25602 | &dwarf_always_disassemble, _("\ | |
25603 | Set whether `info address' always disassembles DWARF expressions."), _("\ | |
25604 | Show whether `info address' always disassembles DWARF expressions."), _("\ | |
25605 | When enabled, DWARF expressions are always printed in an assembly-like\n\ | |
25606 | syntax. When disabled, expressions will be printed in a more\n\ | |
25607 | conversational style, when possible."), | |
25608 | NULL, | |
25609 | show_dwarf_always_disassemble, | |
25610 | &set_dwarf_cmdlist, | |
25611 | &show_dwarf_cmdlist); | |
9291a0cd | 25612 | |
cd4fb1b2 SM |
25613 | add_setshow_zuinteger_cmd ("dwarf-read", no_class, &dwarf_read_debug, _("\ |
25614 | Set debugging of the DWARF reader."), _("\ | |
25615 | Show debugging of the DWARF reader."), _("\ | |
25616 | When enabled (non-zero), debugging messages are printed during DWARF\n\ | |
25617 | reading and symtab expansion. A value of 1 (one) provides basic\n\ | |
25618 | information. A value greater than 1 provides more verbose information."), | |
25619 | NULL, | |
25620 | NULL, | |
25621 | &setdebuglist, &showdebuglist); | |
9291a0cd | 25622 | |
cd4fb1b2 SM |
25623 | add_setshow_zuinteger_cmd ("dwarf-die", no_class, &dwarf_die_debug, _("\ |
25624 | Set debugging of the DWARF DIE reader."), _("\ | |
25625 | Show debugging of the DWARF DIE reader."), _("\ | |
25626 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
25627 | The value is the maximum depth to print."), | |
25628 | NULL, | |
25629 | NULL, | |
25630 | &setdebuglist, &showdebuglist); | |
9291a0cd | 25631 | |
cd4fb1b2 SM |
25632 | add_setshow_zuinteger_cmd ("dwarf-line", no_class, &dwarf_line_debug, _("\ |
25633 | Set debugging of the dwarf line reader."), _("\ | |
25634 | Show debugging of the dwarf line reader."), _("\ | |
25635 | When enabled (non-zero), line number entries are dumped as they are read in.\n\ | |
25636 | A value of 1 (one) provides basic information.\n\ | |
25637 | A value greater than 1 provides more verbose information."), | |
25638 | NULL, | |
25639 | NULL, | |
25640 | &setdebuglist, &showdebuglist); | |
437afbb8 | 25641 | |
cd4fb1b2 SM |
25642 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
25643 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
25644 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
25645 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
25646 | the demangler."), | |
25647 | NULL, show_check_physname, | |
25648 | &setdebuglist, &showdebuglist); | |
900e11f9 | 25649 | |
e615022a DE |
25650 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
25651 | no_class, &use_deprecated_index_sections, _("\ | |
25652 | Set whether to use deprecated gdb_index sections."), _("\ | |
25653 | Show whether to use deprecated gdb_index sections."), _("\ | |
25654 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
25655 | Normally they are ignored either because of a missing feature or\n\ | |
25656 | performance issue.\n\ | |
25657 | Warning: This option must be enabled before gdb reads the file."), | |
25658 | NULL, | |
25659 | NULL, | |
25660 | &setlist, &showlist); | |
25661 | ||
f1e6e072 TT |
25662 | dwarf2_locexpr_index = register_symbol_computed_impl (LOC_COMPUTED, |
25663 | &dwarf2_locexpr_funcs); | |
25664 | dwarf2_loclist_index = register_symbol_computed_impl (LOC_COMPUTED, | |
25665 | &dwarf2_loclist_funcs); | |
25666 | ||
25667 | dwarf2_locexpr_block_index = register_symbol_block_impl (LOC_BLOCK, | |
25668 | &dwarf2_block_frame_base_locexpr_funcs); | |
25669 | dwarf2_loclist_block_index = register_symbol_block_impl (LOC_BLOCK, | |
25670 | &dwarf2_block_frame_base_loclist_funcs); | |
c62446b1 PA |
25671 | |
25672 | #if GDB_SELF_TEST | |
25673 | selftests::register_test ("dw2_expand_symtabs_matching", | |
25674 | selftests::dw2_expand_symtabs_matching::run_test); | |
25675 | #endif | |
6502dd73 | 25676 | } |