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 | ||
3193 | objfile->psymtabs_addrmap = addrmap_create_fixed (mutable_map, | |
3194 | &objfile->objfile_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 | ||
3354 | objfile->psymtabs_addrmap = addrmap_create_fixed (mutable_map, | |
3355 | &objfile->objfile_obstack); | |
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 | ||
927aa2e7 JK |
5248 | if (!objfile->psymtabs_addrmap) |
5249 | return NULL; | |
5250 | ||
79748972 TT |
5251 | CORE_ADDR baseaddr = ANOFFSET (objfile->section_offsets, |
5252 | SECT_OFF_TEXT (objfile)); | |
927aa2e7 | 5253 | data = (struct dwarf2_per_cu_data *) addrmap_find (objfile->psymtabs_addrmap, |
79748972 | 5254 | 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 | |
af5bf4ad SM |
6302 | if (objfile->global_psymbols.capacity () == 0 |
6303 | && objfile->static_psymbols.capacity () == 0) | |
6304 | init_psymbol_list (objfile, 1024); | |
c906108c | 6305 | |
492d29ea | 6306 | TRY |
c9bf0622 TT |
6307 | { |
6308 | /* This isn't really ideal: all the data we allocate on the | |
6309 | objfile's obstack is still uselessly kept around. However, | |
6310 | freeing it seems unsafe. */ | |
906768f9 | 6311 | psymtab_discarder psymtabs (objfile); |
ed2dc618 | 6312 | dwarf2_build_psymtabs_hard (dwarf2_per_objfile); |
906768f9 | 6313 | psymtabs.keep (); |
87d6a7aa SM |
6314 | |
6315 | /* (maybe) store an index in the cache. */ | |
6316 | global_index_cache.store (dwarf2_per_objfile); | |
c9bf0622 | 6317 | } |
492d29ea PA |
6318 | CATCH (except, RETURN_MASK_ERROR) |
6319 | { | |
6320 | exception_print (gdb_stderr, except); | |
6321 | } | |
6322 | END_CATCH | |
c906108c | 6323 | } |
c906108c | 6324 | |
1ce1cefd DE |
6325 | /* Return the total length of the CU described by HEADER. */ |
6326 | ||
6327 | static unsigned int | |
6328 | get_cu_length (const struct comp_unit_head *header) | |
6329 | { | |
6330 | return header->initial_length_size + header->length; | |
6331 | } | |
6332 | ||
9c541725 | 6333 | /* Return TRUE if SECT_OFF is within CU_HEADER. */ |
45452591 | 6334 | |
9c541725 PA |
6335 | static inline bool |
6336 | offset_in_cu_p (const comp_unit_head *cu_header, sect_offset sect_off) | |
45452591 | 6337 | { |
9c541725 PA |
6338 | sect_offset bottom = cu_header->sect_off; |
6339 | sect_offset top = cu_header->sect_off + get_cu_length (cu_header); | |
9a619af0 | 6340 | |
9c541725 | 6341 | return sect_off >= bottom && sect_off < top; |
45452591 DE |
6342 | } |
6343 | ||
3b80fe9b DE |
6344 | /* Find the base address of the compilation unit for range lists and |
6345 | location lists. It will normally be specified by DW_AT_low_pc. | |
6346 | In DWARF-3 draft 4, the base address could be overridden by | |
6347 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
6348 | compilation units with discontinuous ranges. */ | |
6349 | ||
6350 | static void | |
6351 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
6352 | { | |
6353 | struct attribute *attr; | |
6354 | ||
6355 | cu->base_known = 0; | |
6356 | cu->base_address = 0; | |
6357 | ||
6358 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
6359 | if (attr) | |
6360 | { | |
31aa7e4e | 6361 | cu->base_address = attr_value_as_address (attr); |
3b80fe9b DE |
6362 | cu->base_known = 1; |
6363 | } | |
6364 | else | |
6365 | { | |
6366 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
6367 | if (attr) | |
6368 | { | |
31aa7e4e | 6369 | cu->base_address = attr_value_as_address (attr); |
3b80fe9b DE |
6370 | cu->base_known = 1; |
6371 | } | |
6372 | } | |
6373 | } | |
6374 | ||
93311388 | 6375 | /* Read in the comp unit header information from the debug_info at info_ptr. |
43988095 | 6376 | Use rcuh_kind::COMPILE as the default type if not known by the caller. |
93311388 DE |
6377 | NOTE: This leaves members offset, first_die_offset to be filled in |
6378 | by the caller. */ | |
107d2387 | 6379 | |
d521ce57 | 6380 | static const gdb_byte * |
107d2387 | 6381 | read_comp_unit_head (struct comp_unit_head *cu_header, |
43988095 JK |
6382 | const gdb_byte *info_ptr, |
6383 | struct dwarf2_section_info *section, | |
6384 | rcuh_kind section_kind) | |
107d2387 AC |
6385 | { |
6386 | int signed_addr; | |
891d2f0b | 6387 | unsigned int bytes_read; |
43988095 JK |
6388 | const char *filename = get_section_file_name (section); |
6389 | bfd *abfd = get_section_bfd_owner (section); | |
c764a876 DE |
6390 | |
6391 | cu_header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
6392 | cu_header->initial_length_size = bytes_read; | |
6393 | cu_header->offset_size = (bytes_read == 4) ? 4 : 8; | |
613e1657 | 6394 | info_ptr += bytes_read; |
107d2387 | 6395 | cu_header->version = read_2_bytes (abfd, info_ptr); |
1ea5da02 TV |
6396 | if (cu_header->version < 2 || cu_header->version > 5) |
6397 | error (_("Dwarf Error: wrong version in compilation unit header " | |
6398 | "(is %d, should be 2, 3, 4 or 5) [in module %s]"), | |
6399 | cu_header->version, filename); | |
107d2387 | 6400 | info_ptr += 2; |
43988095 JK |
6401 | if (cu_header->version < 5) |
6402 | switch (section_kind) | |
6403 | { | |
6404 | case rcuh_kind::COMPILE: | |
6405 | cu_header->unit_type = DW_UT_compile; | |
6406 | break; | |
6407 | case rcuh_kind::TYPE: | |
6408 | cu_header->unit_type = DW_UT_type; | |
6409 | break; | |
6410 | default: | |
6411 | internal_error (__FILE__, __LINE__, | |
6412 | _("read_comp_unit_head: invalid section_kind")); | |
6413 | } | |
6414 | else | |
6415 | { | |
6416 | cu_header->unit_type = static_cast<enum dwarf_unit_type> | |
6417 | (read_1_byte (abfd, info_ptr)); | |
6418 | info_ptr += 1; | |
6419 | switch (cu_header->unit_type) | |
6420 | { | |
6421 | case DW_UT_compile: | |
6422 | if (section_kind != rcuh_kind::COMPILE) | |
6423 | error (_("Dwarf Error: wrong unit_type in compilation unit header " | |
6424 | "(is DW_UT_compile, should be DW_UT_type) [in module %s]"), | |
6425 | filename); | |
6426 | break; | |
6427 | case DW_UT_type: | |
6428 | section_kind = rcuh_kind::TYPE; | |
6429 | break; | |
6430 | default: | |
6431 | error (_("Dwarf Error: wrong unit_type in compilation unit header " | |
6432 | "(is %d, should be %d or %d) [in module %s]"), | |
6433 | cu_header->unit_type, DW_UT_compile, DW_UT_type, filename); | |
6434 | } | |
6435 | ||
6436 | cu_header->addr_size = read_1_byte (abfd, info_ptr); | |
6437 | info_ptr += 1; | |
6438 | } | |
9c541725 PA |
6439 | cu_header->abbrev_sect_off = (sect_offset) read_offset (abfd, info_ptr, |
6440 | cu_header, | |
6441 | &bytes_read); | |
613e1657 | 6442 | info_ptr += bytes_read; |
43988095 JK |
6443 | if (cu_header->version < 5) |
6444 | { | |
6445 | cu_header->addr_size = read_1_byte (abfd, info_ptr); | |
6446 | info_ptr += 1; | |
6447 | } | |
107d2387 AC |
6448 | signed_addr = bfd_get_sign_extend_vma (abfd); |
6449 | if (signed_addr < 0) | |
8e65ff28 | 6450 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 6451 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 | 6452 | cu_header->signed_addr_p = signed_addr; |
c764a876 | 6453 | |
43988095 JK |
6454 | if (section_kind == rcuh_kind::TYPE) |
6455 | { | |
6456 | LONGEST type_offset; | |
6457 | ||
6458 | cu_header->signature = read_8_bytes (abfd, info_ptr); | |
6459 | info_ptr += 8; | |
6460 | ||
6461 | type_offset = read_offset (abfd, info_ptr, cu_header, &bytes_read); | |
6462 | info_ptr += bytes_read; | |
9c541725 PA |
6463 | cu_header->type_cu_offset_in_tu = (cu_offset) type_offset; |
6464 | if (to_underlying (cu_header->type_cu_offset_in_tu) != type_offset) | |
43988095 JK |
6465 | error (_("Dwarf Error: Too big type_offset in compilation unit " |
6466 | "header (is %s) [in module %s]"), plongest (type_offset), | |
6467 | filename); | |
6468 | } | |
6469 | ||
107d2387 AC |
6470 | return info_ptr; |
6471 | } | |
6472 | ||
36586728 TT |
6473 | /* Helper function that returns the proper abbrev section for |
6474 | THIS_CU. */ | |
6475 | ||
6476 | static struct dwarf2_section_info * | |
6477 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
6478 | { | |
6479 | struct dwarf2_section_info *abbrev; | |
ed2dc618 | 6480 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
36586728 TT |
6481 | |
6482 | if (this_cu->is_dwz) | |
ed2dc618 | 6483 | abbrev = &dwarf2_get_dwz_file (dwarf2_per_objfile)->abbrev; |
36586728 TT |
6484 | else |
6485 | abbrev = &dwarf2_per_objfile->abbrev; | |
6486 | ||
6487 | return abbrev; | |
6488 | } | |
6489 | ||
9ff913ba DE |
6490 | /* Subroutine of read_and_check_comp_unit_head and |
6491 | read_and_check_type_unit_head to simplify them. | |
6492 | Perform various error checking on the header. */ | |
6493 | ||
6494 | static void | |
ed2dc618 SM |
6495 | error_check_comp_unit_head (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6496 | struct comp_unit_head *header, | |
4bdcc0c1 DE |
6497 | struct dwarf2_section_info *section, |
6498 | struct dwarf2_section_info *abbrev_section) | |
9ff913ba | 6499 | { |
a32a8923 | 6500 | const char *filename = get_section_file_name (section); |
9ff913ba | 6501 | |
9c541725 | 6502 | if (to_underlying (header->abbrev_sect_off) |
36586728 | 6503 | >= dwarf2_section_size (dwarf2_per_objfile->objfile, abbrev_section)) |
9d8780f0 SM |
6504 | error (_("Dwarf Error: bad offset (%s) in compilation unit header " |
6505 | "(offset %s + 6) [in module %s]"), | |
6506 | sect_offset_str (header->abbrev_sect_off), | |
6507 | sect_offset_str (header->sect_off), | |
9ff913ba DE |
6508 | filename); |
6509 | ||
9c541725 | 6510 | /* Cast to ULONGEST to use 64-bit arithmetic when possible to |
9ff913ba | 6511 | avoid potential 32-bit overflow. */ |
9c541725 | 6512 | if (((ULONGEST) header->sect_off + get_cu_length (header)) |
9ff913ba | 6513 | > section->size) |
9c541725 | 6514 | error (_("Dwarf Error: bad length (0x%x) in compilation unit header " |
9d8780f0 SM |
6515 | "(offset %s + 0) [in module %s]"), |
6516 | header->length, sect_offset_str (header->sect_off), | |
9ff913ba DE |
6517 | filename); |
6518 | } | |
6519 | ||
6520 | /* Read in a CU/TU header and perform some basic error checking. | |
6521 | The contents of the header are stored in HEADER. | |
6522 | The result is a pointer to the start of the first DIE. */ | |
adabb602 | 6523 | |
d521ce57 | 6524 | static const gdb_byte * |
ed2dc618 SM |
6525 | read_and_check_comp_unit_head (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6526 | struct comp_unit_head *header, | |
9ff913ba | 6527 | struct dwarf2_section_info *section, |
4bdcc0c1 | 6528 | struct dwarf2_section_info *abbrev_section, |
d521ce57 | 6529 | const gdb_byte *info_ptr, |
43988095 | 6530 | rcuh_kind section_kind) |
72bf9492 | 6531 | { |
d521ce57 | 6532 | const gdb_byte *beg_of_comp_unit = info_ptr; |
72bf9492 | 6533 | |
9c541725 | 6534 | header->sect_off = (sect_offset) (beg_of_comp_unit - section->buffer); |
adabb602 | 6535 | |
43988095 | 6536 | info_ptr = read_comp_unit_head (header, info_ptr, section, section_kind); |
9ff913ba | 6537 | |
9c541725 | 6538 | header->first_die_cu_offset = (cu_offset) (info_ptr - beg_of_comp_unit); |
348e048f | 6539 | |
ed2dc618 SM |
6540 | error_check_comp_unit_head (dwarf2_per_objfile, header, section, |
6541 | abbrev_section); | |
9ff913ba DE |
6542 | |
6543 | return info_ptr; | |
348e048f DE |
6544 | } |
6545 | ||
f4dc4d17 DE |
6546 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
6547 | ||
6548 | static sect_offset | |
ed2dc618 SM |
6549 | read_abbrev_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6550 | struct dwarf2_section_info *section, | |
9c541725 | 6551 | sect_offset sect_off) |
f4dc4d17 | 6552 | { |
a32a8923 | 6553 | bfd *abfd = get_section_bfd_owner (section); |
d521ce57 | 6554 | const gdb_byte *info_ptr; |
ac298888 | 6555 | unsigned int initial_length_size, offset_size; |
43988095 | 6556 | uint16_t version; |
f4dc4d17 DE |
6557 | |
6558 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
9c541725 | 6559 | info_ptr = section->buffer + to_underlying (sect_off); |
ac298888 | 6560 | read_initial_length (abfd, info_ptr, &initial_length_size); |
f4dc4d17 | 6561 | offset_size = initial_length_size == 4 ? 4 : 8; |
43988095 JK |
6562 | info_ptr += initial_length_size; |
6563 | ||
6564 | version = read_2_bytes (abfd, info_ptr); | |
6565 | info_ptr += 2; | |
6566 | if (version >= 5) | |
6567 | { | |
6568 | /* Skip unit type and address size. */ | |
6569 | info_ptr += 2; | |
6570 | } | |
6571 | ||
9c541725 | 6572 | return (sect_offset) read_offset_1 (abfd, info_ptr, offset_size); |
f4dc4d17 DE |
6573 | } |
6574 | ||
aaa75496 JB |
6575 | /* Allocate a new partial symtab for file named NAME and mark this new |
6576 | partial symtab as being an include of PST. */ | |
6577 | ||
6578 | static void | |
d521ce57 | 6579 | dwarf2_create_include_psymtab (const char *name, struct partial_symtab *pst, |
aaa75496 JB |
6580 | struct objfile *objfile) |
6581 | { | |
6582 | struct partial_symtab *subpst = allocate_psymtab (name, objfile); | |
6583 | ||
fbd9ab74 JK |
6584 | if (!IS_ABSOLUTE_PATH (subpst->filename)) |
6585 | { | |
6586 | /* It shares objfile->objfile_obstack. */ | |
6587 | subpst->dirname = pst->dirname; | |
6588 | } | |
6589 | ||
8d749320 SM |
6590 | subpst->dependencies |
6591 | = XOBNEW (&objfile->objfile_obstack, struct partial_symtab *); | |
aaa75496 JB |
6592 | subpst->dependencies[0] = pst; |
6593 | subpst->number_of_dependencies = 1; | |
6594 | ||
aaa75496 | 6595 | subpst->read_symtab = pst->read_symtab; |
aaa75496 JB |
6596 | |
6597 | /* No private part is necessary for include psymtabs. This property | |
6598 | can be used to differentiate between such include psymtabs and | |
10b3939b | 6599 | the regular ones. */ |
58a9656e | 6600 | subpst->read_symtab_private = NULL; |
aaa75496 JB |
6601 | } |
6602 | ||
6603 | /* Read the Line Number Program data and extract the list of files | |
6604 | included by the source file represented by PST. Build an include | |
d85a05f0 | 6605 | partial symtab for each of these included files. */ |
aaa75496 JB |
6606 | |
6607 | static void | |
6608 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 DE |
6609 | struct die_info *die, |
6610 | struct partial_symtab *pst) | |
aaa75496 | 6611 | { |
fff8551c | 6612 | line_header_up lh; |
d85a05f0 | 6613 | struct attribute *attr; |
aaa75496 | 6614 | |
d85a05f0 DJ |
6615 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
6616 | if (attr) | |
9c541725 | 6617 | lh = dwarf_decode_line_header ((sect_offset) DW_UNSND (attr), cu); |
aaa75496 JB |
6618 | if (lh == NULL) |
6619 | return; /* No linetable, so no includes. */ | |
6620 | ||
79748972 TT |
6621 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). Also note |
6622 | that we pass in the raw text_low here; that is ok because we're | |
6623 | only decoding the line table to make include partial symtabs, and | |
6624 | so the addresses aren't really used. */ | |
4ae976d1 | 6625 | dwarf_decode_lines (lh.get (), pst->dirname, cu, pst, |
79748972 | 6626 | pst->raw_text_low (), 1); |
aaa75496 JB |
6627 | } |
6628 | ||
348e048f | 6629 | static hashval_t |
52dc124a | 6630 | hash_signatured_type (const void *item) |
348e048f | 6631 | { |
9a3c8263 SM |
6632 | const struct signatured_type *sig_type |
6633 | = (const struct signatured_type *) item; | |
9a619af0 | 6634 | |
348e048f | 6635 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 6636 | return sig_type->signature; |
348e048f DE |
6637 | } |
6638 | ||
6639 | static int | |
52dc124a | 6640 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f | 6641 | { |
9a3c8263 SM |
6642 | const struct signatured_type *lhs = (const struct signatured_type *) item_lhs; |
6643 | const struct signatured_type *rhs = (const struct signatured_type *) item_rhs; | |
9a619af0 | 6644 | |
348e048f DE |
6645 | return lhs->signature == rhs->signature; |
6646 | } | |
6647 | ||
1fd400ff TT |
6648 | /* Allocate a hash table for signatured types. */ |
6649 | ||
6650 | static htab_t | |
673bfd45 | 6651 | allocate_signatured_type_table (struct objfile *objfile) |
1fd400ff TT |
6652 | { |
6653 | return htab_create_alloc_ex (41, | |
52dc124a DE |
6654 | hash_signatured_type, |
6655 | eq_signatured_type, | |
1fd400ff TT |
6656 | NULL, |
6657 | &objfile->objfile_obstack, | |
6658 | hashtab_obstack_allocate, | |
6659 | dummy_obstack_deallocate); | |
6660 | } | |
6661 | ||
d467dd73 | 6662 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
6663 | |
6664 | static int | |
d467dd73 | 6665 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff | 6666 | { |
9a3c8263 | 6667 | struct signatured_type *sigt = (struct signatured_type *) *slot; |
b2bdb8cf SM |
6668 | std::vector<signatured_type *> *all_type_units |
6669 | = (std::vector<signatured_type *> *) datum; | |
1fd400ff | 6670 | |
b2bdb8cf | 6671 | all_type_units->push_back (sigt); |
1fd400ff TT |
6672 | |
6673 | return 1; | |
6674 | } | |
6675 | ||
78d4d2c5 | 6676 | /* A helper for create_debug_types_hash_table. Read types from SECTION |
43988095 JK |
6677 | and fill them into TYPES_HTAB. It will process only type units, |
6678 | therefore DW_UT_type. */ | |
c88ee1f0 | 6679 | |
78d4d2c5 | 6680 | static void |
ed2dc618 SM |
6681 | create_debug_type_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6682 | struct dwo_file *dwo_file, | |
43988095 JK |
6683 | dwarf2_section_info *section, htab_t &types_htab, |
6684 | rcuh_kind section_kind) | |
348e048f | 6685 | { |
3019eac3 | 6686 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
4bdcc0c1 | 6687 | struct dwarf2_section_info *abbrev_section; |
78d4d2c5 JK |
6688 | bfd *abfd; |
6689 | const gdb_byte *info_ptr, *end_ptr; | |
348e048f | 6690 | |
4bdcc0c1 DE |
6691 | abbrev_section = (dwo_file != NULL |
6692 | ? &dwo_file->sections.abbrev | |
6693 | : &dwarf2_per_objfile->abbrev); | |
6694 | ||
b4f54984 | 6695 | if (dwarf_read_debug) |
43988095 JK |
6696 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", |
6697 | get_section_name (section), | |
a32a8923 | 6698 | get_section_file_name (abbrev_section)); |
09406207 | 6699 | |
78d4d2c5 JK |
6700 | dwarf2_read_section (objfile, section); |
6701 | info_ptr = section->buffer; | |
348e048f | 6702 | |
78d4d2c5 JK |
6703 | if (info_ptr == NULL) |
6704 | return; | |
348e048f | 6705 | |
78d4d2c5 JK |
6706 | /* We can't set abfd until now because the section may be empty or |
6707 | not present, in which case the bfd is unknown. */ | |
6708 | abfd = get_section_bfd_owner (section); | |
348e048f | 6709 | |
78d4d2c5 JK |
6710 | /* We don't use init_cutu_and_read_dies_simple, or some such, here |
6711 | because we don't need to read any dies: the signature is in the | |
6712 | header. */ | |
3019eac3 | 6713 | |
78d4d2c5 JK |
6714 | end_ptr = info_ptr + section->size; |
6715 | while (info_ptr < end_ptr) | |
6716 | { | |
78d4d2c5 JK |
6717 | struct signatured_type *sig_type; |
6718 | struct dwo_unit *dwo_tu; | |
6719 | void **slot; | |
6720 | const gdb_byte *ptr = info_ptr; | |
6721 | struct comp_unit_head header; | |
6722 | unsigned int length; | |
8b70b953 | 6723 | |
9c541725 | 6724 | sect_offset sect_off = (sect_offset) (ptr - section->buffer); |
348e048f | 6725 | |
a49dd8dd JK |
6726 | /* Initialize it due to a false compiler warning. */ |
6727 | header.signature = -1; | |
9c541725 | 6728 | header.type_cu_offset_in_tu = (cu_offset) -1; |
a49dd8dd | 6729 | |
78d4d2c5 JK |
6730 | /* We need to read the type's signature in order to build the hash |
6731 | table, but we don't need anything else just yet. */ | |
348e048f | 6732 | |
ed2dc618 | 6733 | ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, &header, section, |
43988095 | 6734 | abbrev_section, ptr, section_kind); |
348e048f | 6735 | |
78d4d2c5 | 6736 | length = get_cu_length (&header); |
6caca83c | 6737 | |
78d4d2c5 JK |
6738 | /* Skip dummy type units. */ |
6739 | if (ptr >= info_ptr + length | |
43988095 JK |
6740 | || peek_abbrev_code (abfd, ptr) == 0 |
6741 | || header.unit_type != DW_UT_type) | |
78d4d2c5 JK |
6742 | { |
6743 | info_ptr += length; | |
6744 | continue; | |
6745 | } | |
dee91e82 | 6746 | |
78d4d2c5 JK |
6747 | if (types_htab == NULL) |
6748 | { | |
6749 | if (dwo_file) | |
6750 | types_htab = allocate_dwo_unit_table (objfile); | |
6751 | else | |
6752 | types_htab = allocate_signatured_type_table (objfile); | |
6753 | } | |
8b70b953 | 6754 | |
78d4d2c5 JK |
6755 | if (dwo_file) |
6756 | { | |
6757 | sig_type = NULL; | |
6758 | dwo_tu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6759 | struct dwo_unit); | |
6760 | dwo_tu->dwo_file = dwo_file; | |
43988095 | 6761 | dwo_tu->signature = header.signature; |
9c541725 | 6762 | dwo_tu->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 | 6763 | dwo_tu->section = section; |
9c541725 | 6764 | dwo_tu->sect_off = sect_off; |
78d4d2c5 JK |
6765 | dwo_tu->length = length; |
6766 | } | |
6767 | else | |
6768 | { | |
6769 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
6770 | The real type_offset is in the DWO file. */ | |
6771 | dwo_tu = NULL; | |
6772 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6773 | struct signatured_type); | |
43988095 | 6774 | sig_type->signature = header.signature; |
9c541725 | 6775 | sig_type->type_offset_in_tu = header.type_cu_offset_in_tu; |
e3b94546 | 6776 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
78d4d2c5 JK |
6777 | sig_type->per_cu.is_debug_types = 1; |
6778 | sig_type->per_cu.section = section; | |
9c541725 | 6779 | sig_type->per_cu.sect_off = sect_off; |
78d4d2c5 JK |
6780 | sig_type->per_cu.length = length; |
6781 | } | |
6782 | ||
6783 | slot = htab_find_slot (types_htab, | |
6784 | dwo_file ? (void*) dwo_tu : (void *) sig_type, | |
6785 | INSERT); | |
6786 | gdb_assert (slot != NULL); | |
6787 | if (*slot != NULL) | |
6788 | { | |
9c541725 | 6789 | sect_offset dup_sect_off; |
0349ea22 | 6790 | |
3019eac3 DE |
6791 | if (dwo_file) |
6792 | { | |
78d4d2c5 JK |
6793 | const struct dwo_unit *dup_tu |
6794 | = (const struct dwo_unit *) *slot; | |
6795 | ||
9c541725 | 6796 | dup_sect_off = dup_tu->sect_off; |
3019eac3 DE |
6797 | } |
6798 | else | |
6799 | { | |
78d4d2c5 JK |
6800 | const struct signatured_type *dup_tu |
6801 | = (const struct signatured_type *) *slot; | |
6802 | ||
9c541725 | 6803 | dup_sect_off = dup_tu->per_cu.sect_off; |
3019eac3 | 6804 | } |
8b70b953 | 6805 | |
b98664d3 | 6806 | complaint (_("debug type entry at offset %s is duplicate to" |
9d8780f0 SM |
6807 | " the entry at offset %s, signature %s"), |
6808 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
43988095 | 6809 | hex_string (header.signature)); |
78d4d2c5 JK |
6810 | } |
6811 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; | |
3019eac3 | 6812 | |
78d4d2c5 | 6813 | if (dwarf_read_debug > 1) |
9d8780f0 SM |
6814 | fprintf_unfiltered (gdb_stdlog, " offset %s, signature %s\n", |
6815 | sect_offset_str (sect_off), | |
43988095 | 6816 | hex_string (header.signature)); |
3019eac3 | 6817 | |
78d4d2c5 JK |
6818 | info_ptr += length; |
6819 | } | |
6820 | } | |
3019eac3 | 6821 | |
78d4d2c5 JK |
6822 | /* Create the hash table of all entries in the .debug_types |
6823 | (or .debug_types.dwo) section(s). | |
6824 | If reading a DWO file, then DWO_FILE is a pointer to the DWO file object, | |
6825 | otherwise it is NULL. | |
b3c8eb43 | 6826 | |
78d4d2c5 | 6827 | The result is a pointer to the hash table or NULL if there are no types. |
348e048f | 6828 | |
78d4d2c5 | 6829 | Note: This function processes DWO files only, not DWP files. */ |
348e048f | 6830 | |
78d4d2c5 | 6831 | static void |
ed2dc618 SM |
6832 | create_debug_types_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6833 | struct dwo_file *dwo_file, | |
78d4d2c5 JK |
6834 | VEC (dwarf2_section_info_def) *types, |
6835 | htab_t &types_htab) | |
6836 | { | |
6837 | int ix; | |
6838 | struct dwarf2_section_info *section; | |
6839 | ||
6840 | if (VEC_empty (dwarf2_section_info_def, types)) | |
6841 | return; | |
348e048f | 6842 | |
78d4d2c5 JK |
6843 | for (ix = 0; |
6844 | VEC_iterate (dwarf2_section_info_def, types, ix, section); | |
6845 | ++ix) | |
ed2dc618 SM |
6846 | create_debug_type_hash_table (dwarf2_per_objfile, dwo_file, section, |
6847 | types_htab, rcuh_kind::TYPE); | |
3019eac3 DE |
6848 | } |
6849 | ||
6850 | /* Create the hash table of all entries in the .debug_types section, | |
6851 | and initialize all_type_units. | |
6852 | The result is zero if there is an error (e.g. missing .debug_types section), | |
6853 | otherwise non-zero. */ | |
6854 | ||
6855 | static int | |
ed2dc618 | 6856 | create_all_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
3019eac3 | 6857 | { |
78d4d2c5 | 6858 | htab_t types_htab = NULL; |
3019eac3 | 6859 | |
ed2dc618 SM |
6860 | create_debug_type_hash_table (dwarf2_per_objfile, NULL, |
6861 | &dwarf2_per_objfile->info, types_htab, | |
43988095 | 6862 | rcuh_kind::COMPILE); |
ed2dc618 SM |
6863 | create_debug_types_hash_table (dwarf2_per_objfile, NULL, |
6864 | dwarf2_per_objfile->types, types_htab); | |
3019eac3 DE |
6865 | if (types_htab == NULL) |
6866 | { | |
6867 | dwarf2_per_objfile->signatured_types = NULL; | |
6868 | return 0; | |
6869 | } | |
6870 | ||
348e048f DE |
6871 | dwarf2_per_objfile->signatured_types = types_htab; |
6872 | ||
b2bdb8cf SM |
6873 | gdb_assert (dwarf2_per_objfile->all_type_units.empty ()); |
6874 | dwarf2_per_objfile->all_type_units.reserve (htab_elements (types_htab)); | |
6875 | ||
6876 | htab_traverse_noresize (types_htab, add_signatured_type_cu_to_table, | |
6877 | &dwarf2_per_objfile->all_type_units); | |
1fd400ff | 6878 | |
348e048f DE |
6879 | return 1; |
6880 | } | |
6881 | ||
6aa5f3a6 DE |
6882 | /* Add an entry for signature SIG to dwarf2_per_objfile->signatured_types. |
6883 | If SLOT is non-NULL, it is the entry to use in the hash table. | |
6884 | Otherwise we find one. */ | |
6885 | ||
6886 | static struct signatured_type * | |
ed2dc618 SM |
6887 | add_type_unit (struct dwarf2_per_objfile *dwarf2_per_objfile, ULONGEST sig, |
6888 | void **slot) | |
6aa5f3a6 DE |
6889 | { |
6890 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6aa5f3a6 | 6891 | |
b2bdb8cf SM |
6892 | if (dwarf2_per_objfile->all_type_units.size () |
6893 | == dwarf2_per_objfile->all_type_units.capacity ()) | |
6894 | ++dwarf2_per_objfile->tu_stats.nr_all_type_units_reallocs; | |
6aa5f3a6 | 6895 | |
b2bdb8cf SM |
6896 | signatured_type *sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
6897 | struct signatured_type); | |
6898 | ||
6899 | dwarf2_per_objfile->all_type_units.push_back (sig_type); | |
6aa5f3a6 DE |
6900 | sig_type->signature = sig; |
6901 | sig_type->per_cu.is_debug_types = 1; | |
6902 | if (dwarf2_per_objfile->using_index) | |
6903 | { | |
6904 | sig_type->per_cu.v.quick = | |
6905 | OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6906 | struct dwarf2_per_cu_quick_data); | |
6907 | } | |
6908 | ||
6909 | if (slot == NULL) | |
6910 | { | |
6911 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, | |
6912 | sig_type, INSERT); | |
6913 | } | |
6914 | gdb_assert (*slot == NULL); | |
6915 | *slot = sig_type; | |
6916 | /* The rest of sig_type must be filled in by the caller. */ | |
6917 | return sig_type; | |
6918 | } | |
6919 | ||
a2ce51a0 DE |
6920 | /* Subroutine of lookup_dwo_signatured_type and lookup_dwp_signatured_type. |
6921 | Fill in SIG_ENTRY with DWO_ENTRY. */ | |
6922 | ||
6923 | static void | |
ed2dc618 | 6924 | fill_in_sig_entry_from_dwo_entry (struct dwarf2_per_objfile *dwarf2_per_objfile, |
a2ce51a0 DE |
6925 | struct signatured_type *sig_entry, |
6926 | struct dwo_unit *dwo_entry) | |
6927 | { | |
7ee85ab1 | 6928 | /* Make sure we're not clobbering something we don't expect to. */ |
a2ce51a0 DE |
6929 | gdb_assert (! sig_entry->per_cu.queued); |
6930 | gdb_assert (sig_entry->per_cu.cu == NULL); | |
6aa5f3a6 DE |
6931 | if (dwarf2_per_objfile->using_index) |
6932 | { | |
6933 | gdb_assert (sig_entry->per_cu.v.quick != NULL); | |
43f3e411 | 6934 | gdb_assert (sig_entry->per_cu.v.quick->compunit_symtab == NULL); |
6aa5f3a6 DE |
6935 | } |
6936 | else | |
6937 | gdb_assert (sig_entry->per_cu.v.psymtab == NULL); | |
a2ce51a0 | 6938 | gdb_assert (sig_entry->signature == dwo_entry->signature); |
9c541725 | 6939 | gdb_assert (to_underlying (sig_entry->type_offset_in_section) == 0); |
a2ce51a0 | 6940 | gdb_assert (sig_entry->type_unit_group == NULL); |
7ee85ab1 DE |
6941 | gdb_assert (sig_entry->dwo_unit == NULL); |
6942 | ||
6943 | sig_entry->per_cu.section = dwo_entry->section; | |
9c541725 | 6944 | sig_entry->per_cu.sect_off = dwo_entry->sect_off; |
7ee85ab1 DE |
6945 | sig_entry->per_cu.length = dwo_entry->length; |
6946 | sig_entry->per_cu.reading_dwo_directly = 1; | |
e3b94546 | 6947 | sig_entry->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
a2ce51a0 DE |
6948 | sig_entry->type_offset_in_tu = dwo_entry->type_offset_in_tu; |
6949 | sig_entry->dwo_unit = dwo_entry; | |
6950 | } | |
6951 | ||
6952 | /* Subroutine of lookup_signatured_type. | |
7ee85ab1 DE |
6953 | If we haven't read the TU yet, create the signatured_type data structure |
6954 | for a TU to be read in directly from a DWO file, bypassing the stub. | |
6955 | This is the "Stay in DWO Optimization": When there is no DWP file and we're | |
6956 | using .gdb_index, then when reading a CU we want to stay in the DWO file | |
6957 | containing that CU. Otherwise we could end up reading several other DWO | |
6958 | files (due to comdat folding) to process the transitive closure of all the | |
6959 | mentioned TUs, and that can be slow. The current DWO file will have every | |
6960 | type signature that it needs. | |
a2ce51a0 DE |
6961 | We only do this for .gdb_index because in the psymtab case we already have |
6962 | to read all the DWOs to build the type unit groups. */ | |
6963 | ||
6964 | static struct signatured_type * | |
6965 | lookup_dwo_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6966 | { | |
518817b3 SM |
6967 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6968 | = cu->per_cu->dwarf2_per_objfile; | |
a2ce51a0 DE |
6969 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
6970 | struct dwo_file *dwo_file; | |
6971 | struct dwo_unit find_dwo_entry, *dwo_entry; | |
6972 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6973 | void **slot; |
a2ce51a0 DE |
6974 | |
6975 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
6976 | ||
6aa5f3a6 DE |
6977 | /* If TU skeletons have been removed then we may not have read in any |
6978 | TUs yet. */ | |
6979 | if (dwarf2_per_objfile->signatured_types == NULL) | |
6980 | { | |
6981 | dwarf2_per_objfile->signatured_types | |
6982 | = allocate_signatured_type_table (objfile); | |
6983 | } | |
a2ce51a0 DE |
6984 | |
6985 | /* We only ever need to read in one copy of a signatured type. | |
6aa5f3a6 DE |
6986 | Use the global signatured_types array to do our own comdat-folding |
6987 | of types. If this is the first time we're reading this TU, and | |
6988 | the TU has an entry in .gdb_index, replace the recorded data from | |
6989 | .gdb_index with this TU. */ | |
a2ce51a0 | 6990 | |
a2ce51a0 | 6991 | find_sig_entry.signature = sig; |
6aa5f3a6 DE |
6992 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, |
6993 | &find_sig_entry, INSERT); | |
9a3c8263 | 6994 | sig_entry = (struct signatured_type *) *slot; |
7ee85ab1 DE |
6995 | |
6996 | /* We can get here with the TU already read, *or* in the process of being | |
6aa5f3a6 DE |
6997 | read. Don't reassign the global entry to point to this DWO if that's |
6998 | the case. Also note that if the TU is already being read, it may not | |
6999 | have come from a DWO, the program may be a mix of Fission-compiled | |
7000 | code and non-Fission-compiled code. */ | |
7001 | ||
7002 | /* Have we already tried to read this TU? | |
7003 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
7004 | needn't exist in the global table yet). */ | |
7005 | if (sig_entry != NULL && sig_entry->per_cu.tu_read) | |
a2ce51a0 DE |
7006 | return sig_entry; |
7007 | ||
6aa5f3a6 DE |
7008 | /* Note: cu->dwo_unit is the dwo_unit that references this TU, not the |
7009 | dwo_unit of the TU itself. */ | |
7010 | dwo_file = cu->dwo_unit->dwo_file; | |
7011 | ||
a2ce51a0 DE |
7012 | /* Ok, this is the first time we're reading this TU. */ |
7013 | if (dwo_file->tus == NULL) | |
7014 | return NULL; | |
7015 | find_dwo_entry.signature = sig; | |
9a3c8263 | 7016 | dwo_entry = (struct dwo_unit *) htab_find (dwo_file->tus, &find_dwo_entry); |
a2ce51a0 DE |
7017 | if (dwo_entry == NULL) |
7018 | return NULL; | |
7019 | ||
6aa5f3a6 DE |
7020 | /* If the global table doesn't have an entry for this TU, add one. */ |
7021 | if (sig_entry == NULL) | |
ed2dc618 | 7022 | sig_entry = add_type_unit (dwarf2_per_objfile, sig, slot); |
6aa5f3a6 | 7023 | |
ed2dc618 | 7024 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, sig_entry, dwo_entry); |
89e63ee4 | 7025 | sig_entry->per_cu.tu_read = 1; |
a2ce51a0 DE |
7026 | return sig_entry; |
7027 | } | |
7028 | ||
a2ce51a0 DE |
7029 | /* Subroutine of lookup_signatured_type. |
7030 | Look up the type for signature SIG, and if we can't find SIG in .gdb_index | |
6aa5f3a6 DE |
7031 | then try the DWP file. If the TU stub (skeleton) has been removed then |
7032 | it won't be in .gdb_index. */ | |
a2ce51a0 DE |
7033 | |
7034 | static struct signatured_type * | |
7035 | lookup_dwp_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
7036 | { | |
518817b3 SM |
7037 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7038 | = cu->per_cu->dwarf2_per_objfile; | |
a2ce51a0 | 7039 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
ed2dc618 | 7040 | struct dwp_file *dwp_file = get_dwp_file (dwarf2_per_objfile); |
a2ce51a0 DE |
7041 | struct dwo_unit *dwo_entry; |
7042 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 7043 | void **slot; |
a2ce51a0 DE |
7044 | |
7045 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
7046 | gdb_assert (dwp_file != NULL); | |
7047 | ||
6aa5f3a6 DE |
7048 | /* If TU skeletons have been removed then we may not have read in any |
7049 | TUs yet. */ | |
7050 | if (dwarf2_per_objfile->signatured_types == NULL) | |
a2ce51a0 | 7051 | { |
6aa5f3a6 DE |
7052 | dwarf2_per_objfile->signatured_types |
7053 | = allocate_signatured_type_table (objfile); | |
a2ce51a0 DE |
7054 | } |
7055 | ||
6aa5f3a6 DE |
7056 | find_sig_entry.signature = sig; |
7057 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, | |
7058 | &find_sig_entry, INSERT); | |
9a3c8263 | 7059 | sig_entry = (struct signatured_type *) *slot; |
6aa5f3a6 DE |
7060 | |
7061 | /* Have we already tried to read this TU? | |
7062 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
7063 | needn't exist in the global table yet). */ | |
7064 | if (sig_entry != NULL) | |
7065 | return sig_entry; | |
7066 | ||
a2ce51a0 DE |
7067 | if (dwp_file->tus == NULL) |
7068 | return NULL; | |
ed2dc618 | 7069 | dwo_entry = lookup_dwo_unit_in_dwp (dwarf2_per_objfile, dwp_file, NULL, |
57d63ce2 | 7070 | sig, 1 /* is_debug_types */); |
a2ce51a0 DE |
7071 | if (dwo_entry == NULL) |
7072 | return NULL; | |
7073 | ||
ed2dc618 SM |
7074 | sig_entry = add_type_unit (dwarf2_per_objfile, sig, slot); |
7075 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, sig_entry, dwo_entry); | |
a2ce51a0 | 7076 | |
a2ce51a0 DE |
7077 | return sig_entry; |
7078 | } | |
7079 | ||
380bca97 | 7080 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
5a8b3f62 DE |
7081 | Returns NULL if signature SIG is not present in the table. |
7082 | It is up to the caller to complain about this. */ | |
348e048f DE |
7083 | |
7084 | static struct signatured_type * | |
a2ce51a0 | 7085 | lookup_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) |
348e048f | 7086 | { |
518817b3 SM |
7087 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7088 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 7089 | |
a2ce51a0 DE |
7090 | if (cu->dwo_unit |
7091 | && dwarf2_per_objfile->using_index) | |
7092 | { | |
7093 | /* We're in a DWO/DWP file, and we're using .gdb_index. | |
7094 | These cases require special processing. */ | |
ed2dc618 | 7095 | if (get_dwp_file (dwarf2_per_objfile) == NULL) |
a2ce51a0 DE |
7096 | return lookup_dwo_signatured_type (cu, sig); |
7097 | else | |
7098 | return lookup_dwp_signatured_type (cu, sig); | |
7099 | } | |
7100 | else | |
7101 | { | |
7102 | struct signatured_type find_entry, *entry; | |
348e048f | 7103 | |
a2ce51a0 DE |
7104 | if (dwarf2_per_objfile->signatured_types == NULL) |
7105 | return NULL; | |
7106 | find_entry.signature = sig; | |
9a3c8263 SM |
7107 | entry = ((struct signatured_type *) |
7108 | htab_find (dwarf2_per_objfile->signatured_types, &find_entry)); | |
a2ce51a0 DE |
7109 | return entry; |
7110 | } | |
348e048f | 7111 | } |
42e7ad6c DE |
7112 | \f |
7113 | /* Low level DIE reading support. */ | |
348e048f | 7114 | |
d85a05f0 DJ |
7115 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
7116 | ||
7117 | static void | |
7118 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 7119 | struct dwarf2_cu *cu, |
3019eac3 | 7120 | struct dwarf2_section_info *section, |
685af9cd TT |
7121 | struct dwo_file *dwo_file, |
7122 | struct abbrev_table *abbrev_table) | |
d85a05f0 | 7123 | { |
fceca515 | 7124 | gdb_assert (section->readin && section->buffer != NULL); |
a32a8923 | 7125 | reader->abfd = get_section_bfd_owner (section); |
d85a05f0 | 7126 | reader->cu = cu; |
3019eac3 | 7127 | reader->dwo_file = dwo_file; |
dee91e82 DE |
7128 | reader->die_section = section; |
7129 | reader->buffer = section->buffer; | |
f664829e | 7130 | reader->buffer_end = section->buffer + section->size; |
a2ce51a0 | 7131 | reader->comp_dir = NULL; |
685af9cd | 7132 | reader->abbrev_table = abbrev_table; |
d85a05f0 DJ |
7133 | } |
7134 | ||
b0c7bfa9 DE |
7135 | /* Subroutine of init_cutu_and_read_dies to simplify it. |
7136 | Read in the rest of a CU/TU top level DIE from DWO_UNIT. | |
7137 | There's just a lot of work to do, and init_cutu_and_read_dies is big enough | |
7138 | already. | |
7139 | ||
7140 | STUB_COMP_UNIT_DIE is for the stub DIE, we copy over certain attributes | |
7141 | from it to the DIE in the DWO. If NULL we are skipping the stub. | |
a2ce51a0 DE |
7142 | STUB_COMP_DIR is similar to STUB_COMP_UNIT_DIE: When reading a TU directly |
7143 | from the DWO file, bypassing the stub, it contains the DW_AT_comp_dir | |
c54a1dd8 DE |
7144 | attribute of the referencing CU. At most one of STUB_COMP_UNIT_DIE and |
7145 | STUB_COMP_DIR may be non-NULL. | |
b0c7bfa9 DE |
7146 | *RESULT_READER,*RESULT_INFO_PTR,*RESULT_COMP_UNIT_DIE,*RESULT_HAS_CHILDREN |
7147 | are filled in with the info of the DIE from the DWO file. | |
685af9cd TT |
7148 | *RESULT_DWO_ABBREV_TABLE will be filled in with the abbrev table allocated |
7149 | from the dwo. Since *RESULT_READER references this abbrev table, it must be | |
7150 | kept around for at least as long as *RESULT_READER. | |
7151 | ||
b0c7bfa9 DE |
7152 | The result is non-zero if a valid (non-dummy) DIE was found. */ |
7153 | ||
7154 | static int | |
7155 | read_cutu_die_from_dwo (struct dwarf2_per_cu_data *this_cu, | |
7156 | struct dwo_unit *dwo_unit, | |
b0c7bfa9 | 7157 | struct die_info *stub_comp_unit_die, |
a2ce51a0 | 7158 | const char *stub_comp_dir, |
b0c7bfa9 | 7159 | struct die_reader_specs *result_reader, |
d521ce57 | 7160 | const gdb_byte **result_info_ptr, |
b0c7bfa9 | 7161 | struct die_info **result_comp_unit_die, |
685af9cd TT |
7162 | int *result_has_children, |
7163 | abbrev_table_up *result_dwo_abbrev_table) | |
b0c7bfa9 | 7164 | { |
ed2dc618 | 7165 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
b0c7bfa9 DE |
7166 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
7167 | struct dwarf2_cu *cu = this_cu->cu; | |
b0c7bfa9 | 7168 | bfd *abfd; |
d521ce57 | 7169 | const gdb_byte *begin_info_ptr, *info_ptr; |
b0c7bfa9 DE |
7170 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; |
7171 | int i,num_extra_attrs; | |
7172 | struct dwarf2_section_info *dwo_abbrev_section; | |
7173 | struct attribute *attr; | |
7174 | struct die_info *comp_unit_die; | |
7175 | ||
b0aeadb3 DE |
7176 | /* At most one of these may be provided. */ |
7177 | gdb_assert ((stub_comp_unit_die != NULL) + (stub_comp_dir != NULL) <= 1); | |
a2ce51a0 | 7178 | |
b0c7bfa9 DE |
7179 | /* These attributes aren't processed until later: |
7180 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
0d60c288 DE |
7181 | DW_AT_comp_dir is used now, to find the DWO file, but it is also |
7182 | referenced later. However, these attributes are found in the stub | |
7183 | which we won't have later. In order to not impose this complication | |
7184 | on the rest of the code, we read them here and copy them to the | |
7185 | DWO CU/TU die. */ | |
b0c7bfa9 DE |
7186 | |
7187 | stmt_list = NULL; | |
7188 | low_pc = NULL; | |
7189 | high_pc = NULL; | |
7190 | ranges = NULL; | |
7191 | comp_dir = NULL; | |
7192 | ||
7193 | if (stub_comp_unit_die != NULL) | |
7194 | { | |
7195 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
7196 | DWO file. */ | |
7197 | if (! this_cu->is_debug_types) | |
7198 | stmt_list = dwarf2_attr (stub_comp_unit_die, DW_AT_stmt_list, cu); | |
7199 | low_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_low_pc, cu); | |
7200 | high_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_high_pc, cu); | |
7201 | ranges = dwarf2_attr (stub_comp_unit_die, DW_AT_ranges, cu); | |
7202 | comp_dir = dwarf2_attr (stub_comp_unit_die, DW_AT_comp_dir, cu); | |
7203 | ||
7204 | /* There should be a DW_AT_addr_base attribute here (if needed). | |
7205 | We need the value before we can process DW_FORM_GNU_addr_index. */ | |
7206 | cu->addr_base = 0; | |
7207 | attr = dwarf2_attr (stub_comp_unit_die, DW_AT_GNU_addr_base, cu); | |
7208 | if (attr) | |
7209 | cu->addr_base = DW_UNSND (attr); | |
7210 | ||
7211 | /* There should be a DW_AT_ranges_base attribute here (if needed). | |
7212 | We need the value before we can process DW_AT_ranges. */ | |
7213 | cu->ranges_base = 0; | |
7214 | attr = dwarf2_attr (stub_comp_unit_die, DW_AT_GNU_ranges_base, cu); | |
7215 | if (attr) | |
7216 | cu->ranges_base = DW_UNSND (attr); | |
7217 | } | |
a2ce51a0 DE |
7218 | else if (stub_comp_dir != NULL) |
7219 | { | |
7220 | /* Reconstruct the comp_dir attribute to simplify the code below. */ | |
8d749320 | 7221 | comp_dir = XOBNEW (&cu->comp_unit_obstack, struct attribute); |
a2ce51a0 DE |
7222 | comp_dir->name = DW_AT_comp_dir; |
7223 | comp_dir->form = DW_FORM_string; | |
7224 | DW_STRING_IS_CANONICAL (comp_dir) = 0; | |
7225 | DW_STRING (comp_dir) = stub_comp_dir; | |
7226 | } | |
b0c7bfa9 DE |
7227 | |
7228 | /* Set up for reading the DWO CU/TU. */ | |
7229 | cu->dwo_unit = dwo_unit; | |
685af9cd | 7230 | dwarf2_section_info *section = dwo_unit->section; |
b0c7bfa9 | 7231 | dwarf2_read_section (objfile, section); |
a32a8923 | 7232 | abfd = get_section_bfd_owner (section); |
9c541725 PA |
7233 | begin_info_ptr = info_ptr = (section->buffer |
7234 | + to_underlying (dwo_unit->sect_off)); | |
b0c7bfa9 | 7235 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; |
b0c7bfa9 DE |
7236 | |
7237 | if (this_cu->is_debug_types) | |
7238 | { | |
b0c7bfa9 DE |
7239 | struct signatured_type *sig_type = (struct signatured_type *) this_cu; |
7240 | ||
ed2dc618 SM |
7241 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7242 | &cu->header, section, | |
b0c7bfa9 | 7243 | dwo_abbrev_section, |
43988095 | 7244 | info_ptr, rcuh_kind::TYPE); |
a2ce51a0 | 7245 | /* This is not an assert because it can be caused by bad debug info. */ |
43988095 | 7246 | if (sig_type->signature != cu->header.signature) |
a2ce51a0 DE |
7247 | { |
7248 | error (_("Dwarf Error: signature mismatch %s vs %s while reading" | |
9d8780f0 | 7249 | " TU at offset %s [in module %s]"), |
a2ce51a0 | 7250 | hex_string (sig_type->signature), |
43988095 | 7251 | hex_string (cu->header.signature), |
9d8780f0 | 7252 | sect_offset_str (dwo_unit->sect_off), |
a2ce51a0 DE |
7253 | bfd_get_filename (abfd)); |
7254 | } | |
9c541725 | 7255 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
7256 | /* For DWOs coming from DWP files, we don't know the CU length |
7257 | nor the type's offset in the TU until now. */ | |
7258 | dwo_unit->length = get_cu_length (&cu->header); | |
9c541725 | 7259 | dwo_unit->type_offset_in_tu = cu->header.type_cu_offset_in_tu; |
b0c7bfa9 DE |
7260 | |
7261 | /* Establish the type offset that can be used to lookup the type. | |
7262 | For DWO files, we don't know it until now. */ | |
9c541725 PA |
7263 | sig_type->type_offset_in_section |
7264 | = dwo_unit->sect_off + to_underlying (dwo_unit->type_offset_in_tu); | |
b0c7bfa9 DE |
7265 | } |
7266 | else | |
7267 | { | |
ed2dc618 SM |
7268 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7269 | &cu->header, section, | |
b0c7bfa9 | 7270 | dwo_abbrev_section, |
43988095 | 7271 | info_ptr, rcuh_kind::COMPILE); |
9c541725 | 7272 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
7273 | /* For DWOs coming from DWP files, we don't know the CU length |
7274 | until now. */ | |
7275 | dwo_unit->length = get_cu_length (&cu->header); | |
7276 | } | |
7277 | ||
685af9cd TT |
7278 | *result_dwo_abbrev_table |
7279 | = abbrev_table_read_table (dwarf2_per_objfile, dwo_abbrev_section, | |
7280 | cu->header.abbrev_sect_off); | |
7281 | init_cu_die_reader (result_reader, cu, section, dwo_unit->dwo_file, | |
7282 | result_dwo_abbrev_table->get ()); | |
b0c7bfa9 DE |
7283 | |
7284 | /* Read in the die, but leave space to copy over the attributes | |
7285 | from the stub. This has the benefit of simplifying the rest of | |
7286 | the code - all the work to maintain the illusion of a single | |
7287 | DW_TAG_{compile,type}_unit DIE is done here. */ | |
7288 | num_extra_attrs = ((stmt_list != NULL) | |
7289 | + (low_pc != NULL) | |
7290 | + (high_pc != NULL) | |
7291 | + (ranges != NULL) | |
7292 | + (comp_dir != NULL)); | |
7293 | info_ptr = read_full_die_1 (result_reader, result_comp_unit_die, info_ptr, | |
7294 | result_has_children, num_extra_attrs); | |
7295 | ||
7296 | /* Copy over the attributes from the stub to the DIE we just read in. */ | |
7297 | comp_unit_die = *result_comp_unit_die; | |
7298 | i = comp_unit_die->num_attrs; | |
7299 | if (stmt_list != NULL) | |
7300 | comp_unit_die->attrs[i++] = *stmt_list; | |
7301 | if (low_pc != NULL) | |
7302 | comp_unit_die->attrs[i++] = *low_pc; | |
7303 | if (high_pc != NULL) | |
7304 | comp_unit_die->attrs[i++] = *high_pc; | |
7305 | if (ranges != NULL) | |
7306 | comp_unit_die->attrs[i++] = *ranges; | |
7307 | if (comp_dir != NULL) | |
7308 | comp_unit_die->attrs[i++] = *comp_dir; | |
7309 | comp_unit_die->num_attrs += num_extra_attrs; | |
7310 | ||
b4f54984 | 7311 | if (dwarf_die_debug) |
bf6af496 DE |
7312 | { |
7313 | fprintf_unfiltered (gdb_stdlog, | |
7314 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 7315 | get_section_name (section), |
bf6af496 DE |
7316 | (unsigned) (begin_info_ptr - section->buffer), |
7317 | bfd_get_filename (abfd)); | |
b4f54984 | 7318 | dump_die (comp_unit_die, dwarf_die_debug); |
bf6af496 DE |
7319 | } |
7320 | ||
a2ce51a0 DE |
7321 | /* Save the comp_dir attribute. If there is no DWP file then we'll read |
7322 | TUs by skipping the stub and going directly to the entry in the DWO file. | |
7323 | However, skipping the stub means we won't get DW_AT_comp_dir, so we have | |
7324 | to get it via circuitous means. Blech. */ | |
7325 | if (comp_dir != NULL) | |
7326 | result_reader->comp_dir = DW_STRING (comp_dir); | |
7327 | ||
b0c7bfa9 DE |
7328 | /* Skip dummy compilation units. */ |
7329 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
7330 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
7331 | return 0; | |
7332 | ||
7333 | *result_info_ptr = info_ptr; | |
7334 | return 1; | |
7335 | } | |
7336 | ||
7337 | /* Subroutine of init_cutu_and_read_dies to simplify it. | |
7338 | Look up the DWO unit specified by COMP_UNIT_DIE of THIS_CU. | |
6a506a2d | 7339 | Returns NULL if the specified DWO unit cannot be found. */ |
b0c7bfa9 DE |
7340 | |
7341 | static struct dwo_unit * | |
7342 | lookup_dwo_unit (struct dwarf2_per_cu_data *this_cu, | |
7343 | struct die_info *comp_unit_die) | |
7344 | { | |
7345 | struct dwarf2_cu *cu = this_cu->cu; | |
b0c7bfa9 DE |
7346 | ULONGEST signature; |
7347 | struct dwo_unit *dwo_unit; | |
7348 | const char *comp_dir, *dwo_name; | |
7349 | ||
a2ce51a0 DE |
7350 | gdb_assert (cu != NULL); |
7351 | ||
b0c7bfa9 | 7352 | /* Yeah, we look dwo_name up again, but it simplifies the code. */ |
7d45c7c3 KB |
7353 | dwo_name = dwarf2_string_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); |
7354 | comp_dir = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); | |
b0c7bfa9 DE |
7355 | |
7356 | if (this_cu->is_debug_types) | |
7357 | { | |
7358 | struct signatured_type *sig_type; | |
7359 | ||
7360 | /* Since this_cu is the first member of struct signatured_type, | |
7361 | we can go from a pointer to one to a pointer to the other. */ | |
7362 | sig_type = (struct signatured_type *) this_cu; | |
7363 | signature = sig_type->signature; | |
7364 | dwo_unit = lookup_dwo_type_unit (sig_type, dwo_name, comp_dir); | |
7365 | } | |
7366 | else | |
7367 | { | |
7368 | struct attribute *attr; | |
7369 | ||
7370 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
7371 | if (! attr) | |
7372 | error (_("Dwarf Error: missing dwo_id for dwo_name %s" | |
7373 | " [in module %s]"), | |
e3b94546 | 7374 | dwo_name, objfile_name (this_cu->dwarf2_per_objfile->objfile)); |
b0c7bfa9 DE |
7375 | signature = DW_UNSND (attr); |
7376 | dwo_unit = lookup_dwo_comp_unit (this_cu, dwo_name, comp_dir, | |
7377 | signature); | |
7378 | } | |
7379 | ||
b0c7bfa9 DE |
7380 | return dwo_unit; |
7381 | } | |
7382 | ||
a2ce51a0 | 7383 | /* Subroutine of init_cutu_and_read_dies to simplify it. |
6aa5f3a6 | 7384 | See it for a description of the parameters. |
fcd3b13d | 7385 | Read a TU directly from a DWO file, bypassing the stub. */ |
a2ce51a0 DE |
7386 | |
7387 | static void | |
6aa5f3a6 DE |
7388 | init_tu_and_read_dwo_dies (struct dwarf2_per_cu_data *this_cu, |
7389 | int use_existing_cu, int keep, | |
a2ce51a0 DE |
7390 | die_reader_func_ftype *die_reader_func, |
7391 | void *data) | |
7392 | { | |
fcd3b13d | 7393 | std::unique_ptr<dwarf2_cu> new_cu; |
a2ce51a0 | 7394 | struct signatured_type *sig_type; |
a2ce51a0 DE |
7395 | struct die_reader_specs reader; |
7396 | const gdb_byte *info_ptr; | |
7397 | struct die_info *comp_unit_die; | |
7398 | int has_children; | |
ed2dc618 | 7399 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
a2ce51a0 DE |
7400 | |
7401 | /* Verify we can do the following downcast, and that we have the | |
7402 | data we need. */ | |
7403 | gdb_assert (this_cu->is_debug_types && this_cu->reading_dwo_directly); | |
7404 | sig_type = (struct signatured_type *) this_cu; | |
7405 | gdb_assert (sig_type->dwo_unit != NULL); | |
7406 | ||
6aa5f3a6 DE |
7407 | if (use_existing_cu && this_cu->cu != NULL) |
7408 | { | |
7409 | gdb_assert (this_cu->cu->dwo_unit == sig_type->dwo_unit); | |
6aa5f3a6 DE |
7410 | /* There's no need to do the rereading_dwo_cu handling that |
7411 | init_cutu_and_read_dies does since we don't read the stub. */ | |
7412 | } | |
7413 | else | |
7414 | { | |
7415 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
7416 | gdb_assert (this_cu->cu == NULL); | |
fcd3b13d | 7417 | new_cu.reset (new dwarf2_cu (this_cu)); |
6aa5f3a6 DE |
7418 | } |
7419 | ||
7420 | /* A future optimization, if needed, would be to use an existing | |
7421 | abbrev table. When reading DWOs with skeletonless TUs, all the TUs | |
7422 | could share abbrev tables. */ | |
a2ce51a0 | 7423 | |
685af9cd TT |
7424 | /* The abbreviation table used by READER, this must live at least as long as |
7425 | READER. */ | |
7426 | abbrev_table_up dwo_abbrev_table; | |
7427 | ||
a2ce51a0 | 7428 | if (read_cutu_die_from_dwo (this_cu, sig_type->dwo_unit, |
a2ce51a0 DE |
7429 | NULL /* stub_comp_unit_die */, |
7430 | sig_type->dwo_unit->dwo_file->comp_dir, | |
7431 | &reader, &info_ptr, | |
685af9cd TT |
7432 | &comp_unit_die, &has_children, |
7433 | &dwo_abbrev_table) == 0) | |
a2ce51a0 DE |
7434 | { |
7435 | /* Dummy die. */ | |
a2ce51a0 DE |
7436 | return; |
7437 | } | |
7438 | ||
7439 | /* All the "real" work is done here. */ | |
7440 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
7441 | ||
6aa5f3a6 | 7442 | /* This duplicates the code in init_cutu_and_read_dies, |
a2ce51a0 DE |
7443 | but the alternative is making the latter more complex. |
7444 | This function is only for the special case of using DWO files directly: | |
7445 | no point in overly complicating the general case just to handle this. */ | |
fcd3b13d | 7446 | if (new_cu != NULL && keep) |
a2ce51a0 | 7447 | { |
fcd3b13d SM |
7448 | /* Link this CU into read_in_chain. */ |
7449 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
7450 | dwarf2_per_objfile->read_in_chain = this_cu; | |
7451 | /* The chain owns it now. */ | |
7452 | new_cu.release (); | |
a2ce51a0 | 7453 | } |
a2ce51a0 DE |
7454 | } |
7455 | ||
fd820528 | 7456 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 7457 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 7458 | |
f4dc4d17 DE |
7459 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
7460 | Otherwise the table specified in the comp unit header is read in and used. | |
7461 | This is an optimization for when we already have the abbrev table. | |
7462 | ||
dee91e82 DE |
7463 | If USE_EXISTING_CU is non-zero, and THIS_CU->cu is non-NULL, then use it. |
7464 | Otherwise, a new CU is allocated with xmalloc. | |
7465 | ||
7466 | If KEEP is non-zero, then if we allocated a dwarf2_cu we add it to | |
7467 | read_in_chain. Otherwise the dwarf2_cu data is freed at the end. | |
7468 | ||
7469 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
fd820528 | 7470 | linker) then DIE_READER_FUNC will not get called. */ |
aaa75496 | 7471 | |
70221824 | 7472 | static void |
fd820528 | 7473 | init_cutu_and_read_dies (struct dwarf2_per_cu_data *this_cu, |
f4dc4d17 | 7474 | struct abbrev_table *abbrev_table, |
fd820528 | 7475 | int use_existing_cu, int keep, |
58f0c718 | 7476 | bool skip_partial, |
fd820528 DE |
7477 | die_reader_func_ftype *die_reader_func, |
7478 | void *data) | |
c906108c | 7479 | { |
ed2dc618 | 7480 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
dee91e82 | 7481 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 7482 | struct dwarf2_section_info *section = this_cu->section; |
a32a8923 | 7483 | bfd *abfd = get_section_bfd_owner (section); |
dee91e82 | 7484 | struct dwarf2_cu *cu; |
d521ce57 | 7485 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 7486 | struct die_reader_specs reader; |
d85a05f0 | 7487 | struct die_info *comp_unit_die; |
dee91e82 | 7488 | int has_children; |
d85a05f0 | 7489 | struct attribute *attr; |
dee91e82 | 7490 | struct signatured_type *sig_type = NULL; |
4bdcc0c1 | 7491 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
7492 | /* Non-zero if CU currently points to a DWO file and we need to |
7493 | reread it. When this happens we need to reread the skeleton die | |
a2ce51a0 | 7494 | before we can reread the DWO file (this only applies to CUs, not TUs). */ |
42e7ad6c | 7495 | int rereading_dwo_cu = 0; |
c906108c | 7496 | |
b4f54984 | 7497 | if (dwarf_die_debug) |
9d8780f0 | 7498 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7499 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7500 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7501 | |
dee91e82 DE |
7502 | if (use_existing_cu) |
7503 | gdb_assert (keep); | |
23745b47 | 7504 | |
a2ce51a0 DE |
7505 | /* If we're reading a TU directly from a DWO file, including a virtual DWO |
7506 | file (instead of going through the stub), short-circuit all of this. */ | |
7507 | if (this_cu->reading_dwo_directly) | |
7508 | { | |
7509 | /* Narrow down the scope of possibilities to have to understand. */ | |
7510 | gdb_assert (this_cu->is_debug_types); | |
7511 | gdb_assert (abbrev_table == NULL); | |
6aa5f3a6 DE |
7512 | init_tu_and_read_dwo_dies (this_cu, use_existing_cu, keep, |
7513 | die_reader_func, data); | |
a2ce51a0 DE |
7514 | return; |
7515 | } | |
7516 | ||
dee91e82 DE |
7517 | /* This is cheap if the section is already read in. */ |
7518 | dwarf2_read_section (objfile, section); | |
7519 | ||
9c541725 | 7520 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
36586728 TT |
7521 | |
7522 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 | 7523 | |
fcd3b13d | 7524 | std::unique_ptr<dwarf2_cu> new_cu; |
dee91e82 DE |
7525 | if (use_existing_cu && this_cu->cu != NULL) |
7526 | { | |
7527 | cu = this_cu->cu; | |
42e7ad6c DE |
7528 | /* If this CU is from a DWO file we need to start over, we need to |
7529 | refetch the attributes from the skeleton CU. | |
7530 | This could be optimized by retrieving those attributes from when we | |
7531 | were here the first time: the previous comp_unit_die was stored in | |
7532 | comp_unit_obstack. But there's no data yet that we need this | |
7533 | optimization. */ | |
7534 | if (cu->dwo_unit != NULL) | |
7535 | rereading_dwo_cu = 1; | |
dee91e82 DE |
7536 | } |
7537 | else | |
7538 | { | |
7539 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
7540 | gdb_assert (this_cu->cu == NULL); | |
fcd3b13d SM |
7541 | new_cu.reset (new dwarf2_cu (this_cu)); |
7542 | cu = new_cu.get (); | |
42e7ad6c | 7543 | } |
dee91e82 | 7544 | |
b0c7bfa9 | 7545 | /* Get the header. */ |
9c541725 | 7546 | if (to_underlying (cu->header.first_die_cu_offset) != 0 && !rereading_dwo_cu) |
42e7ad6c DE |
7547 | { |
7548 | /* We already have the header, there's no need to read it in again. */ | |
9c541725 | 7549 | info_ptr += to_underlying (cu->header.first_die_cu_offset); |
42e7ad6c DE |
7550 | } |
7551 | else | |
7552 | { | |
3019eac3 | 7553 | if (this_cu->is_debug_types) |
dee91e82 | 7554 | { |
ed2dc618 SM |
7555 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7556 | &cu->header, section, | |
4bdcc0c1 | 7557 | abbrev_section, info_ptr, |
43988095 | 7558 | rcuh_kind::TYPE); |
dee91e82 | 7559 | |
42e7ad6c DE |
7560 | /* Since per_cu is the first member of struct signatured_type, |
7561 | we can go from a pointer to one to a pointer to the other. */ | |
7562 | sig_type = (struct signatured_type *) this_cu; | |
43988095 | 7563 | gdb_assert (sig_type->signature == cu->header.signature); |
9c541725 PA |
7564 | gdb_assert (sig_type->type_offset_in_tu |
7565 | == cu->header.type_cu_offset_in_tu); | |
7566 | gdb_assert (this_cu->sect_off == cu->header.sect_off); | |
dee91e82 | 7567 | |
42e7ad6c DE |
7568 | /* LENGTH has not been set yet for type units if we're |
7569 | using .gdb_index. */ | |
1ce1cefd | 7570 | this_cu->length = get_cu_length (&cu->header); |
3019eac3 DE |
7571 | |
7572 | /* Establish the type offset that can be used to lookup the type. */ | |
9c541725 PA |
7573 | sig_type->type_offset_in_section = |
7574 | this_cu->sect_off + to_underlying (sig_type->type_offset_in_tu); | |
43988095 JK |
7575 | |
7576 | this_cu->dwarf_version = cu->header.version; | |
dee91e82 DE |
7577 | } |
7578 | else | |
7579 | { | |
ed2dc618 SM |
7580 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7581 | &cu->header, section, | |
4bdcc0c1 | 7582 | abbrev_section, |
43988095 JK |
7583 | info_ptr, |
7584 | rcuh_kind::COMPILE); | |
dee91e82 | 7585 | |
9c541725 | 7586 | gdb_assert (this_cu->sect_off == cu->header.sect_off); |
1ce1cefd | 7587 | gdb_assert (this_cu->length == get_cu_length (&cu->header)); |
43988095 | 7588 | this_cu->dwarf_version = cu->header.version; |
dee91e82 DE |
7589 | } |
7590 | } | |
10b3939b | 7591 | |
6caca83c | 7592 | /* Skip dummy compilation units. */ |
dee91e82 | 7593 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c | 7594 | || peek_abbrev_code (abfd, info_ptr) == 0) |
fcd3b13d | 7595 | return; |
6caca83c | 7596 | |
433df2d4 DE |
7597 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
7598 | And if we need to read them now, make sure they're freed when we're | |
685af9cd TT |
7599 | done (own the table through ABBREV_TABLE_HOLDER). */ |
7600 | abbrev_table_up abbrev_table_holder; | |
f4dc4d17 | 7601 | if (abbrev_table != NULL) |
685af9cd TT |
7602 | gdb_assert (cu->header.abbrev_sect_off == abbrev_table->sect_off); |
7603 | else | |
f4dc4d17 | 7604 | { |
685af9cd TT |
7605 | abbrev_table_holder |
7606 | = abbrev_table_read_table (dwarf2_per_objfile, abbrev_section, | |
7607 | cu->header.abbrev_sect_off); | |
7608 | abbrev_table = abbrev_table_holder.get (); | |
42e7ad6c | 7609 | } |
af703f96 | 7610 | |
dee91e82 | 7611 | /* Read the top level CU/TU die. */ |
685af9cd | 7612 | init_cu_die_reader (&reader, cu, section, NULL, abbrev_table); |
dee91e82 | 7613 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
93311388 | 7614 | |
58f0c718 TT |
7615 | if (skip_partial && comp_unit_die->tag == DW_TAG_partial_unit) |
7616 | return; | |
7617 | ||
b0c7bfa9 | 7618 | /* If we are in a DWO stub, process it and then read in the "real" CU/TU |
685af9cd TT |
7619 | from the DWO file. read_cutu_die_from_dwo will allocate the abbreviation |
7620 | table from the DWO file and pass the ownership over to us. It will be | |
7621 | referenced from READER, so we must make sure to free it after we're done | |
7622 | with READER. | |
7623 | ||
b0c7bfa9 DE |
7624 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains a |
7625 | DWO CU, that this test will fail (the attribute will not be present). */ | |
3019eac3 | 7626 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); |
685af9cd | 7627 | abbrev_table_up dwo_abbrev_table; |
3019eac3 DE |
7628 | if (attr) |
7629 | { | |
3019eac3 | 7630 | struct dwo_unit *dwo_unit; |
b0c7bfa9 | 7631 | struct die_info *dwo_comp_unit_die; |
3019eac3 DE |
7632 | |
7633 | if (has_children) | |
6a506a2d | 7634 | { |
b98664d3 | 7635 | complaint (_("compilation unit with DW_AT_GNU_dwo_name" |
9d8780f0 SM |
7636 | " has children (offset %s) [in module %s]"), |
7637 | sect_offset_str (this_cu->sect_off), | |
7638 | bfd_get_filename (abfd)); | |
6a506a2d | 7639 | } |
b0c7bfa9 | 7640 | dwo_unit = lookup_dwo_unit (this_cu, comp_unit_die); |
6a506a2d | 7641 | if (dwo_unit != NULL) |
3019eac3 | 7642 | { |
6a506a2d | 7643 | if (read_cutu_die_from_dwo (this_cu, dwo_unit, |
a2ce51a0 | 7644 | comp_unit_die, NULL, |
6a506a2d | 7645 | &reader, &info_ptr, |
685af9cd TT |
7646 | &dwo_comp_unit_die, &has_children, |
7647 | &dwo_abbrev_table) == 0) | |
6a506a2d DE |
7648 | { |
7649 | /* Dummy die. */ | |
6a506a2d DE |
7650 | return; |
7651 | } | |
7652 | comp_unit_die = dwo_comp_unit_die; | |
7653 | } | |
7654 | else | |
7655 | { | |
7656 | /* Yikes, we couldn't find the rest of the DIE, we only have | |
7657 | the stub. A complaint has already been logged. There's | |
7658 | not much more we can do except pass on the stub DIE to | |
7659 | die_reader_func. We don't want to throw an error on bad | |
7660 | debug info. */ | |
3019eac3 DE |
7661 | } |
7662 | } | |
7663 | ||
b0c7bfa9 | 7664 | /* All of the above is setup for this call. Yikes. */ |
dee91e82 DE |
7665 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); |
7666 | ||
b0c7bfa9 | 7667 | /* Done, clean up. */ |
fcd3b13d | 7668 | if (new_cu != NULL && keep) |
348e048f | 7669 | { |
fcd3b13d SM |
7670 | /* Link this CU into read_in_chain. */ |
7671 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
7672 | dwarf2_per_objfile->read_in_chain = this_cu; | |
7673 | /* The chain owns it now. */ | |
7674 | new_cu.release (); | |
348e048f | 7675 | } |
dee91e82 DE |
7676 | } |
7677 | ||
33e80786 DE |
7678 | /* Read CU/TU THIS_CU but do not follow DW_AT_GNU_dwo_name if present. |
7679 | DWO_FILE, if non-NULL, is the DWO file to read (the caller is assumed | |
7680 | to have already done the lookup to find the DWO file). | |
dee91e82 DE |
7681 | |
7682 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 7683 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
7684 | |
7685 | We fill in THIS_CU->length. | |
7686 | ||
7687 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
7688 | linker) then DIE_READER_FUNC will not get called. | |
7689 | ||
7690 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
7691 | This is done in order to not leave THIS_CU->cu in a state where we have |
7692 | to care whether it refers to the "main" CU or the DWO CU. */ | |
dee91e82 DE |
7693 | |
7694 | static void | |
7695 | init_cutu_and_read_dies_no_follow (struct dwarf2_per_cu_data *this_cu, | |
3019eac3 | 7696 | struct dwo_file *dwo_file, |
dee91e82 DE |
7697 | die_reader_func_ftype *die_reader_func, |
7698 | void *data) | |
7699 | { | |
ed2dc618 | 7700 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
dee91e82 | 7701 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 7702 | struct dwarf2_section_info *section = this_cu->section; |
a32a8923 | 7703 | bfd *abfd = get_section_bfd_owner (section); |
33e80786 | 7704 | struct dwarf2_section_info *abbrev_section; |
d521ce57 | 7705 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 7706 | struct die_reader_specs reader; |
dee91e82 DE |
7707 | struct die_info *comp_unit_die; |
7708 | int has_children; | |
7709 | ||
b4f54984 | 7710 | if (dwarf_die_debug) |
9d8780f0 | 7711 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7712 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7713 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7714 | |
dee91e82 DE |
7715 | gdb_assert (this_cu->cu == NULL); |
7716 | ||
33e80786 DE |
7717 | abbrev_section = (dwo_file != NULL |
7718 | ? &dwo_file->sections.abbrev | |
7719 | : get_abbrev_section_for_cu (this_cu)); | |
7720 | ||
dee91e82 DE |
7721 | /* This is cheap if the section is already read in. */ |
7722 | dwarf2_read_section (objfile, section); | |
7723 | ||
fcd3b13d | 7724 | struct dwarf2_cu cu (this_cu); |
dee91e82 | 7725 | |
9c541725 | 7726 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
ed2dc618 SM |
7727 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7728 | &cu.header, section, | |
4bdcc0c1 | 7729 | abbrev_section, info_ptr, |
43988095 JK |
7730 | (this_cu->is_debug_types |
7731 | ? rcuh_kind::TYPE | |
7732 | : rcuh_kind::COMPILE)); | |
dee91e82 | 7733 | |
1ce1cefd | 7734 | this_cu->length = get_cu_length (&cu.header); |
dee91e82 DE |
7735 | |
7736 | /* Skip dummy compilation units. */ | |
7737 | if (info_ptr >= begin_info_ptr + this_cu->length | |
7738 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
fcd3b13d | 7739 | return; |
72bf9492 | 7740 | |
685af9cd TT |
7741 | abbrev_table_up abbrev_table |
7742 | = abbrev_table_read_table (dwarf2_per_objfile, abbrev_section, | |
7743 | cu.header.abbrev_sect_off); | |
dee91e82 | 7744 | |
685af9cd | 7745 | init_cu_die_reader (&reader, &cu, section, dwo_file, abbrev_table.get ()); |
dee91e82 DE |
7746 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
7747 | ||
7748 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
dee91e82 DE |
7749 | } |
7750 | ||
3019eac3 DE |
7751 | /* Read a CU/TU, except that this does not look for DW_AT_GNU_dwo_name and |
7752 | does not lookup the specified DWO file. | |
7753 | This cannot be used to read DWO files. | |
dee91e82 DE |
7754 | |
7755 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
7756 | This is done in order to not leave THIS_CU->cu in a state where we have |
7757 | to care whether it refers to the "main" CU or the DWO CU. | |
7758 | We can revisit this if the data shows there's a performance issue. */ | |
dee91e82 DE |
7759 | |
7760 | static void | |
7761 | init_cutu_and_read_dies_simple (struct dwarf2_per_cu_data *this_cu, | |
7762 | die_reader_func_ftype *die_reader_func, | |
7763 | void *data) | |
7764 | { | |
33e80786 | 7765 | init_cutu_and_read_dies_no_follow (this_cu, NULL, die_reader_func, data); |
dee91e82 | 7766 | } |
0018ea6f DE |
7767 | \f |
7768 | /* Type Unit Groups. | |
dee91e82 | 7769 | |
0018ea6f DE |
7770 | Type Unit Groups are a way to collapse the set of all TUs (type units) into |
7771 | a more manageable set. The grouping is done by DW_AT_stmt_list entry | |
7772 | so that all types coming from the same compilation (.o file) are grouped | |
7773 | together. A future step could be to put the types in the same symtab as | |
7774 | the CU the types ultimately came from. */ | |
ff013f42 | 7775 | |
f4dc4d17 DE |
7776 | static hashval_t |
7777 | hash_type_unit_group (const void *item) | |
7778 | { | |
9a3c8263 SM |
7779 | const struct type_unit_group *tu_group |
7780 | = (const struct type_unit_group *) item; | |
f4dc4d17 | 7781 | |
094b34ac | 7782 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 7783 | } |
348e048f DE |
7784 | |
7785 | static int | |
f4dc4d17 | 7786 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 7787 | { |
9a3c8263 SM |
7788 | const struct type_unit_group *lhs = (const struct type_unit_group *) item_lhs; |
7789 | const struct type_unit_group *rhs = (const struct type_unit_group *) item_rhs; | |
348e048f | 7790 | |
094b34ac | 7791 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 7792 | } |
348e048f | 7793 | |
f4dc4d17 DE |
7794 | /* Allocate a hash table for type unit groups. */ |
7795 | ||
7796 | static htab_t | |
ed2dc618 | 7797 | allocate_type_unit_groups_table (struct objfile *objfile) |
f4dc4d17 DE |
7798 | { |
7799 | return htab_create_alloc_ex (3, | |
7800 | hash_type_unit_group, | |
7801 | eq_type_unit_group, | |
7802 | NULL, | |
ed2dc618 | 7803 | &objfile->objfile_obstack, |
f4dc4d17 DE |
7804 | hashtab_obstack_allocate, |
7805 | dummy_obstack_deallocate); | |
7806 | } | |
dee91e82 | 7807 | |
f4dc4d17 DE |
7808 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
7809 | partial symtabs. We combine several TUs per psymtab to not let the size | |
7810 | of any one psymtab grow too big. */ | |
7811 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
7812 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 7813 | |
094b34ac | 7814 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
7815 | Create the type_unit_group object used to hold one or more TUs. */ |
7816 | ||
7817 | static struct type_unit_group * | |
094b34ac | 7818 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 | 7819 | { |
518817b3 SM |
7820 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7821 | = cu->per_cu->dwarf2_per_objfile; | |
f4dc4d17 | 7822 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
094b34ac | 7823 | struct dwarf2_per_cu_data *per_cu; |
f4dc4d17 | 7824 | struct type_unit_group *tu_group; |
f4dc4d17 DE |
7825 | |
7826 | tu_group = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7827 | struct type_unit_group); | |
094b34ac | 7828 | per_cu = &tu_group->per_cu; |
518817b3 | 7829 | per_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
f4dc4d17 | 7830 | |
094b34ac DE |
7831 | if (dwarf2_per_objfile->using_index) |
7832 | { | |
7833 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7834 | struct dwarf2_per_cu_quick_data); | |
094b34ac DE |
7835 | } |
7836 | else | |
7837 | { | |
9c541725 | 7838 | unsigned int line_offset = to_underlying (line_offset_struct); |
094b34ac | 7839 | struct partial_symtab *pst; |
528e1572 | 7840 | std::string name; |
094b34ac DE |
7841 | |
7842 | /* Give the symtab a useful name for debug purposes. */ | |
7843 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
528e1572 SM |
7844 | name = string_printf ("<type_units_%d>", |
7845 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
094b34ac | 7846 | else |
528e1572 | 7847 | name = string_printf ("<type_units_at_0x%x>", line_offset); |
094b34ac | 7848 | |
528e1572 | 7849 | pst = create_partial_symtab (per_cu, name.c_str ()); |
094b34ac | 7850 | pst->anonymous = 1; |
094b34ac | 7851 | } |
f4dc4d17 | 7852 | |
094b34ac | 7853 | tu_group->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7854 | tu_group->hash.line_sect_off = line_offset_struct; |
f4dc4d17 DE |
7855 | |
7856 | return tu_group; | |
7857 | } | |
7858 | ||
094b34ac DE |
7859 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
7860 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
7861 | |
7862 | static struct type_unit_group * | |
ff39bb5e | 7863 | get_type_unit_group (struct dwarf2_cu *cu, const struct attribute *stmt_list) |
f4dc4d17 | 7864 | { |
518817b3 SM |
7865 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7866 | = cu->per_cu->dwarf2_per_objfile; | |
f4dc4d17 DE |
7867 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; |
7868 | struct type_unit_group *tu_group; | |
7869 | void **slot; | |
7870 | unsigned int line_offset; | |
7871 | struct type_unit_group type_unit_group_for_lookup; | |
7872 | ||
7873 | if (dwarf2_per_objfile->type_unit_groups == NULL) | |
7874 | { | |
7875 | dwarf2_per_objfile->type_unit_groups = | |
ed2dc618 | 7876 | allocate_type_unit_groups_table (dwarf2_per_objfile->objfile); |
f4dc4d17 DE |
7877 | } |
7878 | ||
7879 | /* Do we need to create a new group, or can we use an existing one? */ | |
7880 | ||
7881 | if (stmt_list) | |
7882 | { | |
7883 | line_offset = DW_UNSND (stmt_list); | |
7884 | ++tu_stats->nr_symtab_sharers; | |
7885 | } | |
7886 | else | |
7887 | { | |
7888 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
7889 | We can do various things here like create one group per TU or | |
7890 | spread them over multiple groups to split up the expansion work. | |
7891 | To avoid worst case scenarios (too many groups or too large groups) | |
7892 | we, umm, group them in bunches. */ | |
7893 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
7894 | | (tu_stats->nr_stmt_less_type_units | |
7895 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
7896 | ++tu_stats->nr_stmt_less_type_units; | |
7897 | } | |
7898 | ||
094b34ac | 7899 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7900 | type_unit_group_for_lookup.hash.line_sect_off = (sect_offset) line_offset; |
f4dc4d17 DE |
7901 | slot = htab_find_slot (dwarf2_per_objfile->type_unit_groups, |
7902 | &type_unit_group_for_lookup, INSERT); | |
7903 | if (*slot != NULL) | |
7904 | { | |
9a3c8263 | 7905 | tu_group = (struct type_unit_group *) *slot; |
f4dc4d17 DE |
7906 | gdb_assert (tu_group != NULL); |
7907 | } | |
7908 | else | |
7909 | { | |
9c541725 | 7910 | sect_offset line_offset_struct = (sect_offset) line_offset; |
094b34ac | 7911 | tu_group = create_type_unit_group (cu, line_offset_struct); |
f4dc4d17 DE |
7912 | *slot = tu_group; |
7913 | ++tu_stats->nr_symtabs; | |
7914 | } | |
7915 | ||
7916 | return tu_group; | |
7917 | } | |
0018ea6f DE |
7918 | \f |
7919 | /* Partial symbol tables. */ | |
7920 | ||
7921 | /* Create a psymtab named NAME and assign it to PER_CU. | |
7922 | ||
7923 | The caller must fill in the following details: | |
7924 | dirname, textlow, texthigh. */ | |
7925 | ||
7926 | static struct partial_symtab * | |
7927 | create_partial_symtab (struct dwarf2_per_cu_data *per_cu, const char *name) | |
7928 | { | |
e3b94546 | 7929 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
0018ea6f DE |
7930 | struct partial_symtab *pst; |
7931 | ||
939652a5 | 7932 | pst = start_psymtab_common (objfile, name, 0); |
0018ea6f DE |
7933 | |
7934 | pst->psymtabs_addrmap_supported = 1; | |
7935 | ||
7936 | /* This is the glue that links PST into GDB's symbol API. */ | |
7937 | pst->read_symtab_private = per_cu; | |
7938 | pst->read_symtab = dwarf2_read_symtab; | |
7939 | per_cu->v.psymtab = pst; | |
7940 | ||
7941 | return pst; | |
7942 | } | |
7943 | ||
b93601f3 TT |
7944 | /* The DATA object passed to process_psymtab_comp_unit_reader has this |
7945 | type. */ | |
7946 | ||
7947 | struct process_psymtab_comp_unit_data | |
7948 | { | |
7949 | /* True if we are reading a DW_TAG_partial_unit. */ | |
7950 | ||
7951 | int want_partial_unit; | |
7952 | ||
7953 | /* The "pretend" language that is used if the CU doesn't declare a | |
7954 | language. */ | |
7955 | ||
7956 | enum language pretend_language; | |
7957 | }; | |
7958 | ||
0018ea6f DE |
7959 | /* die_reader_func for process_psymtab_comp_unit. */ |
7960 | ||
7961 | static void | |
7962 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7963 | const gdb_byte *info_ptr, |
0018ea6f DE |
7964 | struct die_info *comp_unit_die, |
7965 | int has_children, | |
7966 | void *data) | |
7967 | { | |
7968 | struct dwarf2_cu *cu = reader->cu; | |
518817b3 | 7969 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 7970 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
0018ea6f | 7971 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
0018ea6f DE |
7972 | CORE_ADDR baseaddr; |
7973 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
7974 | struct partial_symtab *pst; | |
3a2b436a | 7975 | enum pc_bounds_kind cu_bounds_kind; |
0018ea6f | 7976 | const char *filename; |
9a3c8263 SM |
7977 | struct process_psymtab_comp_unit_data *info |
7978 | = (struct process_psymtab_comp_unit_data *) data; | |
0018ea6f | 7979 | |
b93601f3 | 7980 | if (comp_unit_die->tag == DW_TAG_partial_unit && !info->want_partial_unit) |
0018ea6f DE |
7981 | return; |
7982 | ||
7983 | gdb_assert (! per_cu->is_debug_types); | |
7984 | ||
b93601f3 | 7985 | prepare_one_comp_unit (cu, comp_unit_die, info->pretend_language); |
0018ea6f | 7986 | |
0018ea6f | 7987 | /* Allocate a new partial symbol table structure. */ |
7d45c7c3 KB |
7988 | filename = dwarf2_string_attr (comp_unit_die, DW_AT_name, cu); |
7989 | if (filename == NULL) | |
0018ea6f | 7990 | filename = ""; |
0018ea6f DE |
7991 | |
7992 | pst = create_partial_symtab (per_cu, filename); | |
7993 | ||
7994 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
7d45c7c3 | 7995 | pst->dirname = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
0018ea6f DE |
7996 | |
7997 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
7998 | ||
7999 | dwarf2_find_base_address (comp_unit_die, cu); | |
8000 | ||
8001 | /* Possibly set the default values of LOWPC and HIGHPC from | |
8002 | `DW_AT_ranges'. */ | |
3a2b436a JK |
8003 | cu_bounds_kind = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
8004 | &best_highpc, cu, pst); | |
8005 | if (cu_bounds_kind == PC_BOUNDS_HIGH_LOW && best_lowpc < best_highpc) | |
79748972 TT |
8006 | { |
8007 | CORE_ADDR low | |
8008 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_lowpc + baseaddr) | |
8009 | - baseaddr); | |
8010 | CORE_ADDR high | |
8011 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_highpc + baseaddr) | |
8012 | - baseaddr - 1); | |
8013 | /* Store the contiguous range if it is not empty; it can be | |
8014 | empty for CUs with no code. */ | |
8015 | addrmap_set_empty (objfile->psymtabs_addrmap, low, high, pst); | |
8016 | } | |
0018ea6f DE |
8017 | |
8018 | /* Check if comp unit has_children. | |
8019 | If so, read the rest of the partial symbols from this comp unit. | |
8020 | If not, there's no more debug_info for this comp unit. */ | |
8021 | if (has_children) | |
8022 | { | |
8023 | struct partial_die_info *first_die; | |
8024 | CORE_ADDR lowpc, highpc; | |
8025 | ||
8026 | lowpc = ((CORE_ADDR) -1); | |
8027 | highpc = ((CORE_ADDR) 0); | |
8028 | ||
8029 | first_die = load_partial_dies (reader, info_ptr, 1); | |
8030 | ||
8031 | scan_partial_symbols (first_die, &lowpc, &highpc, | |
e385593e | 8032 | cu_bounds_kind <= PC_BOUNDS_INVALID, cu); |
0018ea6f DE |
8033 | |
8034 | /* If we didn't find a lowpc, set it to highpc to avoid | |
8035 | complaints from `maint check'. */ | |
8036 | if (lowpc == ((CORE_ADDR) -1)) | |
8037 | lowpc = highpc; | |
8038 | ||
8039 | /* If the compilation unit didn't have an explicit address range, | |
8040 | then use the information extracted from its child dies. */ | |
e385593e | 8041 | if (cu_bounds_kind <= PC_BOUNDS_INVALID) |
0018ea6f DE |
8042 | { |
8043 | best_lowpc = lowpc; | |
8044 | best_highpc = highpc; | |
8045 | } | |
8046 | } | |
4ae976d1 | 8047 | pst->set_text_low (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
8048 | best_lowpc + baseaddr) |
8049 | - baseaddr); | |
4ae976d1 | 8050 | pst->set_text_high (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
8051 | best_highpc + baseaddr) |
8052 | - baseaddr); | |
0018ea6f | 8053 | |
8763cede | 8054 | end_psymtab_common (objfile, pst); |
0018ea6f DE |
8055 | |
8056 | if (!VEC_empty (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs)) | |
8057 | { | |
8058 | int i; | |
8059 | int len = VEC_length (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
8060 | struct dwarf2_per_cu_data *iter; | |
8061 | ||
8062 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
8063 | post-pass. */ | |
8064 | pst->number_of_dependencies = len; | |
8d749320 SM |
8065 | pst->dependencies = |
8066 | XOBNEWVEC (&objfile->objfile_obstack, struct partial_symtab *, len); | |
0018ea6f DE |
8067 | for (i = 0; |
8068 | VEC_iterate (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, | |
8069 | i, iter); | |
8070 | ++i) | |
8071 | pst->dependencies[i] = iter->v.psymtab; | |
8072 | ||
8073 | VEC_free (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
8074 | } | |
8075 | ||
8076 | /* Get the list of files included in the current compilation unit, | |
8077 | and build a psymtab for each of them. */ | |
8078 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
8079 | ||
b4f54984 | 8080 | if (dwarf_read_debug) |
b926417a TT |
8081 | fprintf_unfiltered (gdb_stdlog, |
8082 | "Psymtab for %s unit @%s: %s - %s" | |
8083 | ", %d global, %d static syms\n", | |
8084 | per_cu->is_debug_types ? "type" : "comp", | |
8085 | sect_offset_str (per_cu->sect_off), | |
8086 | paddress (gdbarch, pst->text_low (objfile)), | |
8087 | paddress (gdbarch, pst->text_high (objfile)), | |
8088 | pst->n_global_syms, pst->n_static_syms); | |
0018ea6f DE |
8089 | } |
8090 | ||
8091 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
8092 | Process compilation unit THIS_CU for a psymtab. */ | |
8093 | ||
8094 | static void | |
8095 | process_psymtab_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
b93601f3 TT |
8096 | int want_partial_unit, |
8097 | enum language pretend_language) | |
0018ea6f DE |
8098 | { |
8099 | /* If this compilation unit was already read in, free the | |
8100 | cached copy in order to read it in again. This is | |
8101 | necessary because we skipped some symbols when we first | |
8102 | read in the compilation unit (see load_partial_dies). | |
8103 | This problem could be avoided, but the benefit is unclear. */ | |
8104 | if (this_cu->cu != NULL) | |
8105 | free_one_cached_comp_unit (this_cu); | |
8106 | ||
f1902523 | 8107 | if (this_cu->is_debug_types) |
58f0c718 TT |
8108 | init_cutu_and_read_dies (this_cu, NULL, 0, 0, false, |
8109 | build_type_psymtabs_reader, NULL); | |
f1902523 JK |
8110 | else |
8111 | { | |
8112 | process_psymtab_comp_unit_data info; | |
8113 | info.want_partial_unit = want_partial_unit; | |
8114 | info.pretend_language = pretend_language; | |
58f0c718 | 8115 | init_cutu_and_read_dies (this_cu, NULL, 0, 0, false, |
f1902523 JK |
8116 | process_psymtab_comp_unit_reader, &info); |
8117 | } | |
0018ea6f DE |
8118 | |
8119 | /* Age out any secondary CUs. */ | |
ed2dc618 | 8120 | age_cached_comp_units (this_cu->dwarf2_per_objfile); |
0018ea6f | 8121 | } |
f4dc4d17 DE |
8122 | |
8123 | /* Reader function for build_type_psymtabs. */ | |
8124 | ||
8125 | static void | |
8126 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
d521ce57 | 8127 | const gdb_byte *info_ptr, |
f4dc4d17 DE |
8128 | struct die_info *type_unit_die, |
8129 | int has_children, | |
8130 | void *data) | |
8131 | { | |
ed2dc618 | 8132 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 8133 | = reader->cu->per_cu->dwarf2_per_objfile; |
f4dc4d17 DE |
8134 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8135 | struct dwarf2_cu *cu = reader->cu; | |
8136 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
0186c6a7 | 8137 | struct signatured_type *sig_type; |
f4dc4d17 DE |
8138 | struct type_unit_group *tu_group; |
8139 | struct attribute *attr; | |
8140 | struct partial_die_info *first_die; | |
8141 | CORE_ADDR lowpc, highpc; | |
8142 | struct partial_symtab *pst; | |
8143 | ||
8144 | gdb_assert (data == NULL); | |
0186c6a7 DE |
8145 | gdb_assert (per_cu->is_debug_types); |
8146 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 DE |
8147 | |
8148 | if (! has_children) | |
8149 | return; | |
8150 | ||
8151 | attr = dwarf2_attr_no_follow (type_unit_die, DW_AT_stmt_list); | |
094b34ac | 8152 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 8153 | |
0186c6a7 | 8154 | VEC_safe_push (sig_type_ptr, tu_group->tus, sig_type); |
f4dc4d17 DE |
8155 | |
8156 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
f4dc4d17 DE |
8157 | pst = create_partial_symtab (per_cu, ""); |
8158 | pst->anonymous = 1; | |
8159 | ||
8160 | first_die = load_partial_dies (reader, info_ptr, 1); | |
8161 | ||
8162 | lowpc = (CORE_ADDR) -1; | |
8163 | highpc = (CORE_ADDR) 0; | |
8164 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
8165 | ||
8763cede | 8166 | end_psymtab_common (objfile, pst); |
f4dc4d17 DE |
8167 | } |
8168 | ||
73051182 DE |
8169 | /* Struct used to sort TUs by their abbreviation table offset. */ |
8170 | ||
8171 | struct tu_abbrev_offset | |
8172 | { | |
b2bdb8cf SM |
8173 | tu_abbrev_offset (signatured_type *sig_type_, sect_offset abbrev_offset_) |
8174 | : sig_type (sig_type_), abbrev_offset (abbrev_offset_) | |
8175 | {} | |
8176 | ||
8177 | signatured_type *sig_type; | |
73051182 DE |
8178 | sect_offset abbrev_offset; |
8179 | }; | |
8180 | ||
484cf504 | 8181 | /* Helper routine for build_type_psymtabs_1, passed to std::sort. */ |
73051182 | 8182 | |
484cf504 TT |
8183 | static bool |
8184 | sort_tu_by_abbrev_offset (const struct tu_abbrev_offset &a, | |
8185 | const struct tu_abbrev_offset &b) | |
73051182 | 8186 | { |
484cf504 | 8187 | return a.abbrev_offset < b.abbrev_offset; |
73051182 DE |
8188 | } |
8189 | ||
8190 | /* Efficiently read all the type units. | |
8191 | This does the bulk of the work for build_type_psymtabs. | |
8192 | ||
8193 | The efficiency is because we sort TUs by the abbrev table they use and | |
8194 | only read each abbrev table once. In one program there are 200K TUs | |
8195 | sharing 8K abbrev tables. | |
8196 | ||
8197 | The main purpose of this function is to support building the | |
8198 | dwarf2_per_objfile->type_unit_groups table. | |
8199 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we | |
8200 | can collapse the search space by grouping them by stmt_list. | |
8201 | The savings can be significant, in the same program from above the 200K TUs | |
8202 | share 8K stmt_list tables. | |
8203 | ||
8204 | FUNC is expected to call get_type_unit_group, which will create the | |
8205 | struct type_unit_group if necessary and add it to | |
8206 | dwarf2_per_objfile->type_unit_groups. */ | |
8207 | ||
8208 | static void | |
ed2dc618 | 8209 | build_type_psymtabs_1 (struct dwarf2_per_objfile *dwarf2_per_objfile) |
73051182 | 8210 | { |
73051182 | 8211 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; |
685af9cd | 8212 | abbrev_table_up abbrev_table; |
73051182 | 8213 | sect_offset abbrev_offset; |
73051182 DE |
8214 | |
8215 | /* It's up to the caller to not call us multiple times. */ | |
8216 | gdb_assert (dwarf2_per_objfile->type_unit_groups == NULL); | |
8217 | ||
b2bdb8cf | 8218 | if (dwarf2_per_objfile->all_type_units.empty ()) |
73051182 DE |
8219 | return; |
8220 | ||
8221 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
8222 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
8223 | read each abbrev table in. | |
8224 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
8225 | This is simpler and efficient enough for now. | |
8226 | ||
8227 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
8228 | symtab to use). Typically TUs with the same abbrev offset have the same | |
8229 | stmt_list value too so in practice this should work well. | |
8230 | ||
8231 | The basic algorithm here is: | |
8232 | ||
8233 | sort TUs by abbrev table | |
8234 | for each TU with same abbrev table: | |
8235 | read abbrev table if first user | |
8236 | read TU top level DIE | |
8237 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
8238 | call FUNC */ | |
8239 | ||
b4f54984 | 8240 | if (dwarf_read_debug) |
73051182 DE |
8241 | fprintf_unfiltered (gdb_stdlog, "Building type unit groups ...\n"); |
8242 | ||
8243 | /* Sort in a separate table to maintain the order of all_type_units | |
8244 | for .gdb_index: TU indices directly index all_type_units. */ | |
b2bdb8cf SM |
8245 | std::vector<tu_abbrev_offset> sorted_by_abbrev; |
8246 | sorted_by_abbrev.reserve (dwarf2_per_objfile->all_type_units.size ()); | |
8247 | ||
8248 | for (signatured_type *sig_type : dwarf2_per_objfile->all_type_units) | |
8249 | sorted_by_abbrev.emplace_back | |
8250 | (sig_type, read_abbrev_offset (dwarf2_per_objfile, | |
8251 | sig_type->per_cu.section, | |
8252 | sig_type->per_cu.sect_off)); | |
73051182 | 8253 | |
484cf504 TT |
8254 | std::sort (sorted_by_abbrev.begin (), sorted_by_abbrev.end (), |
8255 | sort_tu_by_abbrev_offset); | |
73051182 | 8256 | |
9c541725 | 8257 | abbrev_offset = (sect_offset) ~(unsigned) 0; |
73051182 | 8258 | |
b2bdb8cf | 8259 | for (const tu_abbrev_offset &tu : sorted_by_abbrev) |
73051182 | 8260 | { |
73051182 DE |
8261 | /* Switch to the next abbrev table if necessary. */ |
8262 | if (abbrev_table == NULL | |
b2bdb8cf | 8263 | || tu.abbrev_offset != abbrev_offset) |
73051182 | 8264 | { |
b2bdb8cf | 8265 | abbrev_offset = tu.abbrev_offset; |
73051182 | 8266 | abbrev_table = |
ed2dc618 SM |
8267 | abbrev_table_read_table (dwarf2_per_objfile, |
8268 | &dwarf2_per_objfile->abbrev, | |
73051182 DE |
8269 | abbrev_offset); |
8270 | ++tu_stats->nr_uniq_abbrev_tables; | |
8271 | } | |
8272 | ||
b2bdb8cf | 8273 | init_cutu_and_read_dies (&tu.sig_type->per_cu, abbrev_table.get (), |
58f0c718 | 8274 | 0, 0, false, build_type_psymtabs_reader, NULL); |
73051182 | 8275 | } |
6aa5f3a6 | 8276 | } |
73051182 | 8277 | |
6aa5f3a6 DE |
8278 | /* Print collected type unit statistics. */ |
8279 | ||
8280 | static void | |
ed2dc618 | 8281 | print_tu_stats (struct dwarf2_per_objfile *dwarf2_per_objfile) |
6aa5f3a6 DE |
8282 | { |
8283 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
8284 | ||
8285 | fprintf_unfiltered (gdb_stdlog, "Type unit statistics:\n"); | |
b2bdb8cf SM |
8286 | fprintf_unfiltered (gdb_stdlog, " %zu TUs\n", |
8287 | dwarf2_per_objfile->all_type_units.size ()); | |
6aa5f3a6 DE |
8288 | fprintf_unfiltered (gdb_stdlog, " %d uniq abbrev tables\n", |
8289 | tu_stats->nr_uniq_abbrev_tables); | |
8290 | fprintf_unfiltered (gdb_stdlog, " %d symtabs from stmt_list entries\n", | |
8291 | tu_stats->nr_symtabs); | |
8292 | fprintf_unfiltered (gdb_stdlog, " %d symtab sharers\n", | |
8293 | tu_stats->nr_symtab_sharers); | |
8294 | fprintf_unfiltered (gdb_stdlog, " %d type units without a stmt_list\n", | |
8295 | tu_stats->nr_stmt_less_type_units); | |
8296 | fprintf_unfiltered (gdb_stdlog, " %d all_type_units reallocs\n", | |
8297 | tu_stats->nr_all_type_units_reallocs); | |
73051182 DE |
8298 | } |
8299 | ||
f4dc4d17 DE |
8300 | /* Traversal function for build_type_psymtabs. */ |
8301 | ||
8302 | static int | |
8303 | build_type_psymtab_dependencies (void **slot, void *info) | |
8304 | { | |
ed2dc618 SM |
8305 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8306 | = (struct dwarf2_per_objfile *) info; | |
f4dc4d17 DE |
8307 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8308 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; | |
094b34ac | 8309 | struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu; |
f4dc4d17 | 8310 | struct partial_symtab *pst = per_cu->v.psymtab; |
0186c6a7 DE |
8311 | int len = VEC_length (sig_type_ptr, tu_group->tus); |
8312 | struct signatured_type *iter; | |
f4dc4d17 DE |
8313 | int i; |
8314 | ||
8315 | gdb_assert (len > 0); | |
0186c6a7 | 8316 | gdb_assert (IS_TYPE_UNIT_GROUP (per_cu)); |
f4dc4d17 DE |
8317 | |
8318 | pst->number_of_dependencies = len; | |
8d749320 SM |
8319 | pst->dependencies = |
8320 | XOBNEWVEC (&objfile->objfile_obstack, struct partial_symtab *, len); | |
f4dc4d17 | 8321 | for (i = 0; |
0186c6a7 | 8322 | VEC_iterate (sig_type_ptr, tu_group->tus, i, iter); |
f4dc4d17 DE |
8323 | ++i) |
8324 | { | |
0186c6a7 DE |
8325 | gdb_assert (iter->per_cu.is_debug_types); |
8326 | pst->dependencies[i] = iter->per_cu.v.psymtab; | |
796a7ff8 | 8327 | iter->type_unit_group = tu_group; |
f4dc4d17 DE |
8328 | } |
8329 | ||
0186c6a7 | 8330 | VEC_free (sig_type_ptr, tu_group->tus); |
348e048f DE |
8331 | |
8332 | return 1; | |
8333 | } | |
8334 | ||
8335 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
8336 | Build partial symbol tables for the .debug_types comp-units. */ | |
8337 | ||
8338 | static void | |
ed2dc618 | 8339 | build_type_psymtabs (struct dwarf2_per_objfile *dwarf2_per_objfile) |
348e048f | 8340 | { |
ed2dc618 | 8341 | if (! create_all_type_units (dwarf2_per_objfile)) |
348e048f DE |
8342 | return; |
8343 | ||
ed2dc618 | 8344 | build_type_psymtabs_1 (dwarf2_per_objfile); |
6aa5f3a6 | 8345 | } |
f4dc4d17 | 8346 | |
6aa5f3a6 DE |
8347 | /* Traversal function for process_skeletonless_type_unit. |
8348 | Read a TU in a DWO file and build partial symbols for it. */ | |
8349 | ||
8350 | static int | |
8351 | process_skeletonless_type_unit (void **slot, void *info) | |
8352 | { | |
8353 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
ed2dc618 SM |
8354 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8355 | = (struct dwarf2_per_objfile *) info; | |
6aa5f3a6 DE |
8356 | struct signatured_type find_entry, *entry; |
8357 | ||
8358 | /* If this TU doesn't exist in the global table, add it and read it in. */ | |
8359 | ||
8360 | if (dwarf2_per_objfile->signatured_types == NULL) | |
8361 | { | |
8362 | dwarf2_per_objfile->signatured_types | |
ed2dc618 | 8363 | = allocate_signatured_type_table (dwarf2_per_objfile->objfile); |
6aa5f3a6 DE |
8364 | } |
8365 | ||
8366 | find_entry.signature = dwo_unit->signature; | |
8367 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, &find_entry, | |
8368 | INSERT); | |
8369 | /* If we've already seen this type there's nothing to do. What's happening | |
8370 | is we're doing our own version of comdat-folding here. */ | |
8371 | if (*slot != NULL) | |
8372 | return 1; | |
8373 | ||
8374 | /* This does the job that create_all_type_units would have done for | |
8375 | this TU. */ | |
ed2dc618 SM |
8376 | entry = add_type_unit (dwarf2_per_objfile, dwo_unit->signature, slot); |
8377 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, entry, dwo_unit); | |
6aa5f3a6 DE |
8378 | *slot = entry; |
8379 | ||
8380 | /* This does the job that build_type_psymtabs_1 would have done. */ | |
58f0c718 | 8381 | init_cutu_and_read_dies (&entry->per_cu, NULL, 0, 0, false, |
6aa5f3a6 DE |
8382 | build_type_psymtabs_reader, NULL); |
8383 | ||
8384 | return 1; | |
8385 | } | |
8386 | ||
8387 | /* Traversal function for process_skeletonless_type_units. */ | |
8388 | ||
8389 | static int | |
8390 | process_dwo_file_for_skeletonless_type_units (void **slot, void *info) | |
8391 | { | |
8392 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
8393 | ||
8394 | if (dwo_file->tus != NULL) | |
8395 | { | |
8396 | htab_traverse_noresize (dwo_file->tus, | |
8397 | process_skeletonless_type_unit, info); | |
8398 | } | |
8399 | ||
8400 | return 1; | |
8401 | } | |
8402 | ||
8403 | /* Scan all TUs of DWO files, verifying we've processed them. | |
8404 | This is needed in case a TU was emitted without its skeleton. | |
8405 | Note: This can't be done until we know what all the DWO files are. */ | |
8406 | ||
8407 | static void | |
ed2dc618 | 8408 | process_skeletonless_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
6aa5f3a6 DE |
8409 | { |
8410 | /* Skeletonless TUs in DWP files without .gdb_index is not supported yet. */ | |
ed2dc618 | 8411 | if (get_dwp_file (dwarf2_per_objfile) == NULL |
6aa5f3a6 DE |
8412 | && dwarf2_per_objfile->dwo_files != NULL) |
8413 | { | |
8414 | htab_traverse_noresize (dwarf2_per_objfile->dwo_files, | |
8415 | process_dwo_file_for_skeletonless_type_units, | |
ed2dc618 | 8416 | dwarf2_per_objfile); |
6aa5f3a6 | 8417 | } |
348e048f DE |
8418 | } |
8419 | ||
ed2dc618 | 8420 | /* Compute the 'user' field for each psymtab in DWARF2_PER_OBJFILE. */ |
95554aad TT |
8421 | |
8422 | static void | |
ed2dc618 | 8423 | set_partial_user (struct dwarf2_per_objfile *dwarf2_per_objfile) |
95554aad | 8424 | { |
b76e467d | 8425 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
95554aad | 8426 | { |
95554aad | 8427 | struct partial_symtab *pst = per_cu->v.psymtab; |
95554aad | 8428 | |
36586728 TT |
8429 | if (pst == NULL) |
8430 | continue; | |
8431 | ||
b76e467d | 8432 | for (int j = 0; j < pst->number_of_dependencies; ++j) |
95554aad TT |
8433 | { |
8434 | /* Set the 'user' field only if it is not already set. */ | |
8435 | if (pst->dependencies[j]->user == NULL) | |
8436 | pst->dependencies[j]->user = pst; | |
8437 | } | |
8438 | } | |
8439 | } | |
8440 | ||
93311388 DE |
8441 | /* Build the partial symbol table by doing a quick pass through the |
8442 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 8443 | |
93311388 | 8444 | static void |
ed2dc618 | 8445 | dwarf2_build_psymtabs_hard (struct dwarf2_per_objfile *dwarf2_per_objfile) |
93311388 | 8446 | { |
ed2dc618 | 8447 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
93311388 | 8448 | |
b4f54984 | 8449 | if (dwarf_read_debug) |
45cfd468 DE |
8450 | { |
8451 | fprintf_unfiltered (gdb_stdlog, "Building psymtabs of objfile %s ...\n", | |
4262abfb | 8452 | objfile_name (objfile)); |
45cfd468 DE |
8453 | } |
8454 | ||
98bfdba5 PA |
8455 | dwarf2_per_objfile->reading_partial_symbols = 1; |
8456 | ||
be391dca | 8457 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
91c24f0a | 8458 | |
93311388 DE |
8459 | /* Any cached compilation units will be linked by the per-objfile |
8460 | read_in_chain. Make sure to free them when we're done. */ | |
11ed8cad | 8461 | free_cached_comp_units freer (dwarf2_per_objfile); |
72bf9492 | 8462 | |
ed2dc618 | 8463 | build_type_psymtabs (dwarf2_per_objfile); |
348e048f | 8464 | |
ed2dc618 | 8465 | create_all_comp_units (dwarf2_per_objfile); |
c906108c | 8466 | |
60606b2c TT |
8467 | /* Create a temporary address map on a temporary obstack. We later |
8468 | copy this to the final obstack. */ | |
8268c778 | 8469 | auto_obstack temp_obstack; |
791afaa2 TT |
8470 | |
8471 | scoped_restore save_psymtabs_addrmap | |
8472 | = make_scoped_restore (&objfile->psymtabs_addrmap, | |
8473 | addrmap_create_mutable (&temp_obstack)); | |
72bf9492 | 8474 | |
b76e467d SM |
8475 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
8476 | process_psymtab_comp_unit (per_cu, 0, language_minimal); | |
ff013f42 | 8477 | |
6aa5f3a6 | 8478 | /* This has to wait until we read the CUs, we need the list of DWOs. */ |
ed2dc618 | 8479 | process_skeletonless_type_units (dwarf2_per_objfile); |
6aa5f3a6 DE |
8480 | |
8481 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
8482 | if (dwarf2_per_objfile->type_unit_groups != NULL) | |
8483 | { | |
8484 | htab_traverse_noresize (dwarf2_per_objfile->type_unit_groups, | |
ed2dc618 | 8485 | build_type_psymtab_dependencies, dwarf2_per_objfile); |
6aa5f3a6 DE |
8486 | } |
8487 | ||
b4f54984 | 8488 | if (dwarf_read_debug) |
ed2dc618 | 8489 | print_tu_stats (dwarf2_per_objfile); |
6aa5f3a6 | 8490 | |
ed2dc618 | 8491 | set_partial_user (dwarf2_per_objfile); |
95554aad | 8492 | |
ff013f42 JK |
8493 | objfile->psymtabs_addrmap = addrmap_create_fixed (objfile->psymtabs_addrmap, |
8494 | &objfile->objfile_obstack); | |
791afaa2 TT |
8495 | /* At this point we want to keep the address map. */ |
8496 | save_psymtabs_addrmap.release (); | |
ff013f42 | 8497 | |
b4f54984 | 8498 | if (dwarf_read_debug) |
45cfd468 | 8499 | fprintf_unfiltered (gdb_stdlog, "Done building psymtabs of %s\n", |
4262abfb | 8500 | objfile_name (objfile)); |
ae038cb0 DJ |
8501 | } |
8502 | ||
3019eac3 | 8503 | /* die_reader_func for load_partial_comp_unit. */ |
ae038cb0 DJ |
8504 | |
8505 | static void | |
dee91e82 | 8506 | load_partial_comp_unit_reader (const struct die_reader_specs *reader, |
d521ce57 | 8507 | const gdb_byte *info_ptr, |
dee91e82 DE |
8508 | struct die_info *comp_unit_die, |
8509 | int has_children, | |
8510 | void *data) | |
ae038cb0 | 8511 | { |
dee91e82 | 8512 | struct dwarf2_cu *cu = reader->cu; |
ae038cb0 | 8513 | |
95554aad | 8514 | prepare_one_comp_unit (cu, comp_unit_die, language_minimal); |
ae038cb0 | 8515 | |
ae038cb0 DJ |
8516 | /* Check if comp unit has_children. |
8517 | If so, read the rest of the partial symbols from this comp unit. | |
0963b4bd | 8518 | If not, there's no more debug_info for this comp unit. */ |
d85a05f0 | 8519 | if (has_children) |
dee91e82 DE |
8520 | load_partial_dies (reader, info_ptr, 0); |
8521 | } | |
98bfdba5 | 8522 | |
dee91e82 DE |
8523 | /* Load the partial DIEs for a secondary CU into memory. |
8524 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 8525 | |
dee91e82 DE |
8526 | static void |
8527 | load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu) | |
8528 | { | |
58f0c718 | 8529 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, false, |
f4dc4d17 | 8530 | load_partial_comp_unit_reader, NULL); |
ae038cb0 DJ |
8531 | } |
8532 | ||
ae038cb0 | 8533 | static void |
ed2dc618 | 8534 | read_comp_units_from_section (struct dwarf2_per_objfile *dwarf2_per_objfile, |
36586728 | 8535 | struct dwarf2_section_info *section, |
f1902523 | 8536 | struct dwarf2_section_info *abbrev_section, |
b76e467d | 8537 | unsigned int is_dwz) |
ae038cb0 | 8538 | { |
d521ce57 | 8539 | const gdb_byte *info_ptr; |
ed2dc618 | 8540 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
be391dca | 8541 | |
b4f54984 | 8542 | if (dwarf_read_debug) |
bf6af496 | 8543 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s\n", |
a32a8923 DE |
8544 | get_section_name (section), |
8545 | get_section_file_name (section)); | |
bf6af496 | 8546 | |
36586728 | 8547 | dwarf2_read_section (objfile, section); |
ae038cb0 | 8548 | |
36586728 | 8549 | info_ptr = section->buffer; |
6e70227d | 8550 | |
36586728 | 8551 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 8552 | { |
ae038cb0 | 8553 | struct dwarf2_per_cu_data *this_cu; |
ae038cb0 | 8554 | |
9c541725 | 8555 | sect_offset sect_off = (sect_offset) (info_ptr - section->buffer); |
ae038cb0 | 8556 | |
f1902523 | 8557 | comp_unit_head cu_header; |
ed2dc618 SM |
8558 | read_and_check_comp_unit_head (dwarf2_per_objfile, &cu_header, section, |
8559 | abbrev_section, info_ptr, | |
8560 | rcuh_kind::COMPILE); | |
ae038cb0 DJ |
8561 | |
8562 | /* Save the compilation unit for later lookup. */ | |
f1902523 JK |
8563 | if (cu_header.unit_type != DW_UT_type) |
8564 | { | |
8565 | this_cu = XOBNEW (&objfile->objfile_obstack, | |
8566 | struct dwarf2_per_cu_data); | |
8567 | memset (this_cu, 0, sizeof (*this_cu)); | |
8568 | } | |
8569 | else | |
8570 | { | |
8571 | auto sig_type = XOBNEW (&objfile->objfile_obstack, | |
8572 | struct signatured_type); | |
8573 | memset (sig_type, 0, sizeof (*sig_type)); | |
8574 | sig_type->signature = cu_header.signature; | |
8575 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
8576 | this_cu = &sig_type->per_cu; | |
8577 | } | |
8578 | this_cu->is_debug_types = (cu_header.unit_type == DW_UT_type); | |
9c541725 | 8579 | this_cu->sect_off = sect_off; |
f1902523 | 8580 | this_cu->length = cu_header.length + cu_header.initial_length_size; |
36586728 | 8581 | this_cu->is_dwz = is_dwz; |
e3b94546 | 8582 | this_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
8a0459fd | 8583 | this_cu->section = section; |
ae038cb0 | 8584 | |
b76e467d | 8585 | dwarf2_per_objfile->all_comp_units.push_back (this_cu); |
ae038cb0 DJ |
8586 | |
8587 | info_ptr = info_ptr + this_cu->length; | |
8588 | } | |
36586728 TT |
8589 | } |
8590 | ||
8591 | /* Create a list of all compilation units in OBJFILE. | |
8592 | This is only done for -readnow and building partial symtabs. */ | |
8593 | ||
8594 | static void | |
ed2dc618 | 8595 | create_all_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
36586728 | 8596 | { |
b76e467d | 8597 | gdb_assert (dwarf2_per_objfile->all_comp_units.empty ()); |
ed2dc618 | 8598 | read_comp_units_from_section (dwarf2_per_objfile, &dwarf2_per_objfile->info, |
b76e467d | 8599 | &dwarf2_per_objfile->abbrev, 0); |
36586728 | 8600 | |
b76e467d | 8601 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
4db1a1dc | 8602 | if (dwz != NULL) |
ed2dc618 | 8603 | read_comp_units_from_section (dwarf2_per_objfile, &dwz->info, &dwz->abbrev, |
b76e467d | 8604 | 1); |
c906108c SS |
8605 | } |
8606 | ||
5734ee8b | 8607 | /* Process all loaded DIEs for compilation unit CU, starting at |
cdc07690 | 8608 | FIRST_DIE. The caller should pass SET_ADDRMAP == 1 if the compilation |
5734ee8b | 8609 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or |
cdc07690 YQ |
8610 | DW_AT_ranges). See the comments of add_partial_subprogram on how |
8611 | SET_ADDRMAP is used and how *LOWPC and *HIGHPC are updated. */ | |
c906108c | 8612 | |
72bf9492 DJ |
8613 | static void |
8614 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
cdc07690 YQ |
8615 | CORE_ADDR *highpc, int set_addrmap, |
8616 | struct dwarf2_cu *cu) | |
c906108c | 8617 | { |
72bf9492 | 8618 | struct partial_die_info *pdi; |
c906108c | 8619 | |
91c24f0a DC |
8620 | /* Now, march along the PDI's, descending into ones which have |
8621 | interesting children but skipping the children of the other ones, | |
8622 | until we reach the end of the compilation unit. */ | |
c906108c | 8623 | |
72bf9492 | 8624 | pdi = first_die; |
91c24f0a | 8625 | |
72bf9492 DJ |
8626 | while (pdi != NULL) |
8627 | { | |
52356b79 | 8628 | pdi->fixup (cu); |
c906108c | 8629 | |
f55ee35c | 8630 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
8631 | children, so we need to look at them. Ditto for anonymous |
8632 | enums. */ | |
933c6fe4 | 8633 | |
72bf9492 | 8634 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
95554aad | 8635 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
b1dc1806 XR |
8636 | || pdi->tag == DW_TAG_imported_unit |
8637 | || pdi->tag == DW_TAG_inlined_subroutine) | |
c906108c | 8638 | { |
72bf9492 | 8639 | switch (pdi->tag) |
c906108c SS |
8640 | { |
8641 | case DW_TAG_subprogram: | |
b1dc1806 | 8642 | case DW_TAG_inlined_subroutine: |
cdc07690 | 8643 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
c906108c | 8644 | break; |
72929c62 | 8645 | case DW_TAG_constant: |
c906108c SS |
8646 | case DW_TAG_variable: |
8647 | case DW_TAG_typedef: | |
91c24f0a | 8648 | case DW_TAG_union_type: |
72bf9492 | 8649 | if (!pdi->is_declaration) |
63d06c5c | 8650 | { |
72bf9492 | 8651 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
8652 | } |
8653 | break; | |
c906108c | 8654 | case DW_TAG_class_type: |
680b30c7 | 8655 | case DW_TAG_interface_type: |
c906108c | 8656 | case DW_TAG_structure_type: |
72bf9492 | 8657 | if (!pdi->is_declaration) |
c906108c | 8658 | { |
72bf9492 | 8659 | add_partial_symbol (pdi, cu); |
c906108c | 8660 | } |
b7fee5a3 KS |
8661 | if ((cu->language == language_rust |
8662 | || cu->language == language_cplus) && pdi->has_children) | |
e98c9e7c TT |
8663 | scan_partial_symbols (pdi->die_child, lowpc, highpc, |
8664 | set_addrmap, cu); | |
c906108c | 8665 | break; |
91c24f0a | 8666 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
8667 | if (!pdi->is_declaration) |
8668 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
8669 | break; |
8670 | case DW_TAG_base_type: | |
a02abb62 | 8671 | case DW_TAG_subrange_type: |
c906108c | 8672 | /* File scope base type definitions are added to the partial |
c5aa993b | 8673 | symbol table. */ |
72bf9492 | 8674 | add_partial_symbol (pdi, cu); |
c906108c | 8675 | break; |
d9fa45fe | 8676 | case DW_TAG_namespace: |
cdc07690 | 8677 | add_partial_namespace (pdi, lowpc, highpc, set_addrmap, cu); |
91c24f0a | 8678 | break; |
5d7cb8df | 8679 | case DW_TAG_module: |
cdc07690 | 8680 | add_partial_module (pdi, lowpc, highpc, set_addrmap, cu); |
5d7cb8df | 8681 | break; |
95554aad TT |
8682 | case DW_TAG_imported_unit: |
8683 | { | |
8684 | struct dwarf2_per_cu_data *per_cu; | |
8685 | ||
f4dc4d17 DE |
8686 | /* For now we don't handle imported units in type units. */ |
8687 | if (cu->per_cu->is_debug_types) | |
8688 | { | |
8689 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
8690 | " supported in type units [in module %s]"), | |
518817b3 | 8691 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
f4dc4d17 DE |
8692 | } |
8693 | ||
e3b94546 SM |
8694 | per_cu = dwarf2_find_containing_comp_unit |
8695 | (pdi->d.sect_off, pdi->is_dwz, | |
518817b3 | 8696 | cu->per_cu->dwarf2_per_objfile); |
95554aad TT |
8697 | |
8698 | /* Go read the partial unit, if needed. */ | |
8699 | if (per_cu->v.psymtab == NULL) | |
b93601f3 | 8700 | process_psymtab_comp_unit (per_cu, 1, cu->language); |
95554aad | 8701 | |
f4dc4d17 | 8702 | VEC_safe_push (dwarf2_per_cu_ptr, |
796a7ff8 | 8703 | cu->per_cu->imported_symtabs, per_cu); |
95554aad TT |
8704 | } |
8705 | break; | |
74921315 KS |
8706 | case DW_TAG_imported_declaration: |
8707 | add_partial_symbol (pdi, cu); | |
8708 | break; | |
c906108c SS |
8709 | default: |
8710 | break; | |
8711 | } | |
8712 | } | |
8713 | ||
72bf9492 DJ |
8714 | /* If the die has a sibling, skip to the sibling. */ |
8715 | ||
8716 | pdi = pdi->die_sibling; | |
8717 | } | |
8718 | } | |
8719 | ||
8720 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 8721 | |
72bf9492 | 8722 | Normally, this is simple. For C++, the parent DIE's fully scoped |
9c37b5ae | 8723 | name is concatenated with "::" and the partial DIE's name. |
72bf9492 DJ |
8724 | Enumerators are an exception; they use the scope of their parent |
8725 | enumeration type, i.e. the name of the enumeration type is not | |
8726 | prepended to the enumerator. | |
91c24f0a | 8727 | |
72bf9492 DJ |
8728 | There are two complexities. One is DW_AT_specification; in this |
8729 | case "parent" means the parent of the target of the specification, | |
8730 | instead of the direct parent of the DIE. The other is compilers | |
8731 | which do not emit DW_TAG_namespace; in this case we try to guess | |
8732 | the fully qualified name of structure types from their members' | |
8733 | linkage names. This must be done using the DIE's children rather | |
8734 | than the children of any DW_AT_specification target. We only need | |
8735 | to do this for structures at the top level, i.e. if the target of | |
8736 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
8737 | have a parent. */ | |
8738 | ||
8739 | /* Compute the scope prefix associated with PDI's parent, in | |
8740 | compilation unit CU. The result will be allocated on CU's | |
8741 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
8742 | field. NULL is returned if no prefix is necessary. */ | |
15d034d0 | 8743 | static const char * |
72bf9492 DJ |
8744 | partial_die_parent_scope (struct partial_die_info *pdi, |
8745 | struct dwarf2_cu *cu) | |
8746 | { | |
15d034d0 | 8747 | const char *grandparent_scope; |
72bf9492 | 8748 | struct partial_die_info *parent, *real_pdi; |
91c24f0a | 8749 | |
72bf9492 DJ |
8750 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
8751 | then this means the parent of the specification DIE. */ | |
8752 | ||
8753 | real_pdi = pdi; | |
72bf9492 | 8754 | while (real_pdi->has_specification) |
36586728 TT |
8755 | real_pdi = find_partial_die (real_pdi->spec_offset, |
8756 | real_pdi->spec_is_dwz, cu); | |
72bf9492 DJ |
8757 | |
8758 | parent = real_pdi->die_parent; | |
8759 | if (parent == NULL) | |
8760 | return NULL; | |
8761 | ||
8762 | if (parent->scope_set) | |
8763 | return parent->scope; | |
8764 | ||
52356b79 | 8765 | parent->fixup (cu); |
72bf9492 | 8766 | |
10b3939b | 8767 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 8768 | |
acebe513 UW |
8769 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
8770 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
8771 | Work around this problem here. */ | |
8772 | if (cu->language == language_cplus | |
6e70227d | 8773 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
8774 | && strcmp (parent->name, "::") == 0 |
8775 | && grandparent_scope == NULL) | |
8776 | { | |
8777 | parent->scope = NULL; | |
8778 | parent->scope_set = 1; | |
8779 | return NULL; | |
8780 | } | |
8781 | ||
9c6c53f7 SA |
8782 | if (pdi->tag == DW_TAG_enumerator) |
8783 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
8784 | parent->scope = grandparent_scope; | |
8785 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 8786 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
8787 | || parent->tag == DW_TAG_structure_type |
8788 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 8789 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a TT |
8790 | || parent->tag == DW_TAG_union_type |
8791 | || parent->tag == DW_TAG_enumeration_type) | |
72bf9492 DJ |
8792 | { |
8793 | if (grandparent_scope == NULL) | |
8794 | parent->scope = parent->name; | |
8795 | else | |
3e43a32a MS |
8796 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
8797 | grandparent_scope, | |
f55ee35c | 8798 | parent->name, 0, cu); |
72bf9492 | 8799 | } |
72bf9492 DJ |
8800 | else |
8801 | { | |
8802 | /* FIXME drow/2004-04-01: What should we be doing with | |
8803 | function-local names? For partial symbols, we should probably be | |
8804 | ignoring them. */ | |
b98664d3 | 8805 | complaint (_("unhandled containing DIE tag %d for DIE at %s"), |
9d8780f0 | 8806 | parent->tag, sect_offset_str (pdi->sect_off)); |
72bf9492 | 8807 | parent->scope = grandparent_scope; |
c906108c SS |
8808 | } |
8809 | ||
72bf9492 DJ |
8810 | parent->scope_set = 1; |
8811 | return parent->scope; | |
8812 | } | |
8813 | ||
8814 | /* Return the fully scoped name associated with PDI, from compilation unit | |
8815 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 8816 | |
72bf9492 DJ |
8817 | static char * |
8818 | partial_die_full_name (struct partial_die_info *pdi, | |
8819 | struct dwarf2_cu *cu) | |
8820 | { | |
15d034d0 | 8821 | const char *parent_scope; |
72bf9492 | 8822 | |
98bfdba5 PA |
8823 | /* If this is a template instantiation, we can not work out the |
8824 | template arguments from partial DIEs. So, unfortunately, we have | |
8825 | to go through the full DIEs. At least any work we do building | |
8826 | types here will be reused if full symbols are loaded later. */ | |
8827 | if (pdi->has_template_arguments) | |
8828 | { | |
52356b79 | 8829 | pdi->fixup (cu); |
98bfdba5 PA |
8830 | |
8831 | if (pdi->name != NULL && strchr (pdi->name, '<') == NULL) | |
8832 | { | |
8833 | struct die_info *die; | |
8834 | struct attribute attr; | |
8835 | struct dwarf2_cu *ref_cu = cu; | |
8836 | ||
b64f50a1 | 8837 | /* DW_FORM_ref_addr is using section offset. */ |
b4069958 | 8838 | attr.name = (enum dwarf_attribute) 0; |
98bfdba5 | 8839 | attr.form = DW_FORM_ref_addr; |
9c541725 | 8840 | attr.u.unsnd = to_underlying (pdi->sect_off); |
98bfdba5 PA |
8841 | die = follow_die_ref (NULL, &attr, &ref_cu); |
8842 | ||
8843 | return xstrdup (dwarf2_full_name (NULL, die, ref_cu)); | |
8844 | } | |
8845 | } | |
8846 | ||
72bf9492 DJ |
8847 | parent_scope = partial_die_parent_scope (pdi, cu); |
8848 | if (parent_scope == NULL) | |
8849 | return NULL; | |
8850 | else | |
f55ee35c | 8851 | return typename_concat (NULL, parent_scope, pdi->name, 0, cu); |
c906108c SS |
8852 | } |
8853 | ||
8854 | static void | |
72bf9492 | 8855 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 8856 | { |
518817b3 SM |
8857 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8858 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 8859 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 8860 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 8861 | CORE_ADDR addr = 0; |
15d034d0 | 8862 | const char *actual_name = NULL; |
e142c38c | 8863 | CORE_ADDR baseaddr; |
15d034d0 | 8864 | char *built_actual_name; |
e142c38c DJ |
8865 | |
8866 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 8867 | |
15d034d0 TT |
8868 | built_actual_name = partial_die_full_name (pdi, cu); |
8869 | if (built_actual_name != NULL) | |
8870 | actual_name = built_actual_name; | |
63d06c5c | 8871 | |
72bf9492 DJ |
8872 | if (actual_name == NULL) |
8873 | actual_name = pdi->name; | |
8874 | ||
c906108c SS |
8875 | switch (pdi->tag) |
8876 | { | |
b1dc1806 | 8877 | case DW_TAG_inlined_subroutine: |
c906108c | 8878 | case DW_TAG_subprogram: |
79748972 TT |
8879 | addr = (gdbarch_adjust_dwarf2_addr (gdbarch, pdi->lowpc + baseaddr) |
8880 | - baseaddr); | |
2cfa0c8d | 8881 | if (pdi->is_external || cu->language == language_ada) |
c906108c | 8882 | { |
2cfa0c8d JB |
8883 | /* brobecker/2007-12-26: Normally, only "external" DIEs are part |
8884 | of the global scope. But in Ada, we want to be able to access | |
8885 | nested procedures globally. So all Ada subprograms are stored | |
8886 | in the global scope. */ | |
f47fb265 | 8887 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 8888 | built_actual_name != NULL, |
f47fb265 | 8889 | VAR_DOMAIN, LOC_BLOCK, |
79748972 | 8890 | SECT_OFF_TEXT (objfile), |
75aedd27 | 8891 | psymbol_placement::GLOBAL, |
79748972 TT |
8892 | addr, |
8893 | cu->language, objfile); | |
c906108c SS |
8894 | } |
8895 | else | |
8896 | { | |
f47fb265 | 8897 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 8898 | built_actual_name != NULL, |
f47fb265 | 8899 | VAR_DOMAIN, LOC_BLOCK, |
79748972 | 8900 | SECT_OFF_TEXT (objfile), |
75aedd27 | 8901 | psymbol_placement::STATIC, |
1762568f | 8902 | addr, cu->language, objfile); |
c906108c | 8903 | } |
0c1b455e TT |
8904 | |
8905 | if (pdi->main_subprogram && actual_name != NULL) | |
8906 | set_objfile_main_name (objfile, actual_name, cu->language); | |
c906108c | 8907 | break; |
72929c62 | 8908 | case DW_TAG_constant: |
75aedd27 TT |
8909 | add_psymbol_to_list (actual_name, strlen (actual_name), |
8910 | built_actual_name != NULL, VAR_DOMAIN, LOC_STATIC, | |
8911 | -1, (pdi->is_external | |
8912 | ? psymbol_placement::GLOBAL | |
8913 | : psymbol_placement::STATIC), | |
8914 | 0, cu->language, objfile); | |
72929c62 | 8915 | break; |
c906108c | 8916 | case DW_TAG_variable: |
95554aad TT |
8917 | if (pdi->d.locdesc) |
8918 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 8919 | |
95554aad | 8920 | if (pdi->d.locdesc |
caac4577 JG |
8921 | && addr == 0 |
8922 | && !dwarf2_per_objfile->has_section_at_zero) | |
8923 | { | |
8924 | /* A global or static variable may also have been stripped | |
8925 | out by the linker if unused, in which case its address | |
8926 | will be nullified; do not add such variables into partial | |
8927 | symbol table then. */ | |
8928 | } | |
8929 | else if (pdi->is_external) | |
c906108c SS |
8930 | { |
8931 | /* Global Variable. | |
8932 | Don't enter into the minimal symbol tables as there is | |
8933 | a minimal symbol table entry from the ELF symbols already. | |
8934 | Enter into partial symbol table if it has a location | |
8935 | descriptor or a type. | |
8936 | If the location descriptor is missing, new_symbol will create | |
8937 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
8938 | be determined from the minimal symbol table whenever the variable | |
8939 | is referenced. | |
8940 | The address for the partial symbol table entry is not | |
8941 | used by GDB, but it comes in handy for debugging partial symbol | |
8942 | table building. */ | |
8943 | ||
95554aad | 8944 | if (pdi->d.locdesc || pdi->has_type) |
f47fb265 | 8945 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 8946 | built_actual_name != NULL, |
f47fb265 | 8947 | VAR_DOMAIN, LOC_STATIC, |
79748972 | 8948 | SECT_OFF_TEXT (objfile), |
75aedd27 | 8949 | psymbol_placement::GLOBAL, |
79748972 | 8950 | addr, cu->language, objfile); |
c906108c SS |
8951 | } |
8952 | else | |
8953 | { | |
ff908ebf AW |
8954 | int has_loc = pdi->d.locdesc != NULL; |
8955 | ||
8956 | /* Static Variable. Skip symbols whose value we cannot know (those | |
8957 | without location descriptors or constant values). */ | |
8958 | if (!has_loc && !pdi->has_const_value) | |
decbce07 | 8959 | { |
15d034d0 | 8960 | xfree (built_actual_name); |
decbce07 MS |
8961 | return; |
8962 | } | |
ff908ebf | 8963 | |
f47fb265 | 8964 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 8965 | built_actual_name != NULL, |
f47fb265 | 8966 | VAR_DOMAIN, LOC_STATIC, |
79748972 | 8967 | SECT_OFF_TEXT (objfile), |
75aedd27 | 8968 | psymbol_placement::STATIC, |
79748972 | 8969 | has_loc ? addr : 0, |
f47fb265 | 8970 | cu->language, objfile); |
c906108c SS |
8971 | } |
8972 | break; | |
8973 | case DW_TAG_typedef: | |
8974 | case DW_TAG_base_type: | |
a02abb62 | 8975 | case DW_TAG_subrange_type: |
38d518c9 | 8976 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 8977 | built_actual_name != NULL, |
79748972 | 8978 | VAR_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 8979 | psymbol_placement::STATIC, |
1762568f | 8980 | 0, cu->language, objfile); |
c906108c | 8981 | break; |
74921315 | 8982 | case DW_TAG_imported_declaration: |
72bf9492 DJ |
8983 | case DW_TAG_namespace: |
8984 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
15d034d0 | 8985 | built_actual_name != NULL, |
79748972 | 8986 | VAR_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 8987 | psymbol_placement::GLOBAL, |
1762568f | 8988 | 0, cu->language, objfile); |
72bf9492 | 8989 | break; |
530e8392 KB |
8990 | case DW_TAG_module: |
8991 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
8992 | built_actual_name != NULL, | |
79748972 | 8993 | MODULE_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 8994 | psymbol_placement::GLOBAL, |
1762568f | 8995 | 0, cu->language, objfile); |
530e8392 | 8996 | break; |
c906108c | 8997 | case DW_TAG_class_type: |
680b30c7 | 8998 | case DW_TAG_interface_type: |
c906108c SS |
8999 | case DW_TAG_structure_type: |
9000 | case DW_TAG_union_type: | |
9001 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
9002 | /* Skip external references. The DWARF standard says in the section |
9003 | about "Structure, Union, and Class Type Entries": "An incomplete | |
9004 | structure, union or class type is represented by a structure, | |
9005 | union or class entry that does not have a byte size attribute | |
9006 | and that has a DW_AT_declaration attribute." */ | |
9007 | if (!pdi->has_byte_size && pdi->is_declaration) | |
decbce07 | 9008 | { |
15d034d0 | 9009 | xfree (built_actual_name); |
decbce07 MS |
9010 | return; |
9011 | } | |
fa4028e9 | 9012 | |
63d06c5c DC |
9013 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
9014 | static vs. global. */ | |
38d518c9 | 9015 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 9016 | built_actual_name != NULL, |
79748972 | 9017 | STRUCT_DOMAIN, LOC_TYPEDEF, -1, |
9c37b5ae | 9018 | cu->language == language_cplus |
75aedd27 TT |
9019 | ? psymbol_placement::GLOBAL |
9020 | : psymbol_placement::STATIC, | |
1762568f | 9021 | 0, cu->language, objfile); |
c906108c | 9022 | |
c906108c SS |
9023 | break; |
9024 | case DW_TAG_enumerator: | |
38d518c9 | 9025 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 9026 | built_actual_name != NULL, |
79748972 | 9027 | VAR_DOMAIN, LOC_CONST, -1, |
9c37b5ae | 9028 | cu->language == language_cplus |
75aedd27 TT |
9029 | ? psymbol_placement::GLOBAL |
9030 | : psymbol_placement::STATIC, | |
1762568f | 9031 | 0, cu->language, objfile); |
c906108c SS |
9032 | break; |
9033 | default: | |
9034 | break; | |
9035 | } | |
5c4e30ca | 9036 | |
15d034d0 | 9037 | xfree (built_actual_name); |
c906108c SS |
9038 | } |
9039 | ||
5c4e30ca DC |
9040 | /* Read a partial die corresponding to a namespace; also, add a symbol |
9041 | corresponding to that namespace to the symbol table. NAMESPACE is | |
9042 | the name of the enclosing namespace. */ | |
91c24f0a | 9043 | |
72bf9492 DJ |
9044 | static void |
9045 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 9046 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
cdc07690 | 9047 | int set_addrmap, struct dwarf2_cu *cu) |
91c24f0a | 9048 | { |
72bf9492 | 9049 | /* Add a symbol for the namespace. */ |
e7c27a73 | 9050 | |
72bf9492 | 9051 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
9052 | |
9053 | /* Now scan partial symbols in that namespace. */ | |
9054 | ||
91c24f0a | 9055 | if (pdi->has_children) |
cdc07690 | 9056 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
91c24f0a DC |
9057 | } |
9058 | ||
5d7cb8df JK |
9059 | /* Read a partial die corresponding to a Fortran module. */ |
9060 | ||
9061 | static void | |
9062 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
cdc07690 | 9063 | CORE_ADDR *highpc, int set_addrmap, struct dwarf2_cu *cu) |
5d7cb8df | 9064 | { |
530e8392 KB |
9065 | /* Add a symbol for the namespace. */ |
9066 | ||
9067 | add_partial_symbol (pdi, cu); | |
9068 | ||
f55ee35c | 9069 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
9070 | |
9071 | if (pdi->has_children) | |
cdc07690 | 9072 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
5d7cb8df JK |
9073 | } |
9074 | ||
b1dc1806 XR |
9075 | /* Read a partial die corresponding to a subprogram or an inlined |
9076 | subprogram and create a partial symbol for that subprogram. | |
9077 | When the CU language allows it, this routine also defines a partial | |
9078 | symbol for each nested subprogram that this subprogram contains. | |
9079 | If SET_ADDRMAP is true, record the covered ranges in the addrmap. | |
9080 | Set *LOWPC and *HIGHPC to the lowest and highest PC values found in PDI. | |
6e70227d | 9081 | |
cdc07690 YQ |
9082 | PDI may also be a lexical block, in which case we simply search |
9083 | recursively for subprograms defined inside that lexical block. | |
bc30ff58 JB |
9084 | Again, this is only performed when the CU language allows this |
9085 | type of definitions. */ | |
9086 | ||
9087 | static void | |
9088 | add_partial_subprogram (struct partial_die_info *pdi, | |
9089 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 9090 | int set_addrmap, struct dwarf2_cu *cu) |
bc30ff58 | 9091 | { |
b1dc1806 | 9092 | if (pdi->tag == DW_TAG_subprogram || pdi->tag == DW_TAG_inlined_subroutine) |
bc30ff58 JB |
9093 | { |
9094 | if (pdi->has_pc_info) | |
9095 | { | |
9096 | if (pdi->lowpc < *lowpc) | |
9097 | *lowpc = pdi->lowpc; | |
9098 | if (pdi->highpc > *highpc) | |
9099 | *highpc = pdi->highpc; | |
cdc07690 | 9100 | if (set_addrmap) |
5734ee8b | 9101 | { |
518817b3 | 9102 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a MR |
9103 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9104 | CORE_ADDR baseaddr; | |
b926417a TT |
9105 | CORE_ADDR this_highpc; |
9106 | CORE_ADDR this_lowpc; | |
5734ee8b DJ |
9107 | |
9108 | baseaddr = ANOFFSET (objfile->section_offsets, | |
9109 | SECT_OFF_TEXT (objfile)); | |
b926417a TT |
9110 | this_lowpc |
9111 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
9112 | pdi->lowpc + baseaddr) | |
9113 | - baseaddr); | |
9114 | this_highpc | |
9115 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
9116 | pdi->highpc + baseaddr) | |
9117 | - baseaddr); | |
9118 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
9119 | this_lowpc, this_highpc - 1, | |
9291a0cd | 9120 | cu->per_cu->v.psymtab); |
5734ee8b | 9121 | } |
481860b3 GB |
9122 | } |
9123 | ||
9124 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
9125 | { | |
bc30ff58 | 9126 | if (!pdi->is_declaration) |
e8d05480 JB |
9127 | /* Ignore subprogram DIEs that do not have a name, they are |
9128 | illegal. Do not emit a complaint at this point, we will | |
9129 | do so when we convert this psymtab into a symtab. */ | |
9130 | if (pdi->name) | |
9131 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
9132 | } |
9133 | } | |
6e70227d | 9134 | |
bc30ff58 JB |
9135 | if (! pdi->has_children) |
9136 | return; | |
9137 | ||
9138 | if (cu->language == language_ada) | |
9139 | { | |
9140 | pdi = pdi->die_child; | |
9141 | while (pdi != NULL) | |
9142 | { | |
52356b79 | 9143 | pdi->fixup (cu); |
bc30ff58 | 9144 | if (pdi->tag == DW_TAG_subprogram |
b1dc1806 | 9145 | || pdi->tag == DW_TAG_inlined_subroutine |
bc30ff58 | 9146 | || pdi->tag == DW_TAG_lexical_block) |
cdc07690 | 9147 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
bc30ff58 JB |
9148 | pdi = pdi->die_sibling; |
9149 | } | |
9150 | } | |
9151 | } | |
9152 | ||
91c24f0a DC |
9153 | /* Read a partial die corresponding to an enumeration type. */ |
9154 | ||
72bf9492 DJ |
9155 | static void |
9156 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
9157 | struct dwarf2_cu *cu) | |
91c24f0a | 9158 | { |
72bf9492 | 9159 | struct partial_die_info *pdi; |
91c24f0a DC |
9160 | |
9161 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
9162 | add_partial_symbol (enum_pdi, cu); |
9163 | ||
9164 | pdi = enum_pdi->die_child; | |
9165 | while (pdi) | |
91c24f0a | 9166 | { |
72bf9492 | 9167 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
b98664d3 | 9168 | complaint (_("malformed enumerator DIE ignored")); |
91c24f0a | 9169 | else |
72bf9492 DJ |
9170 | add_partial_symbol (pdi, cu); |
9171 | pdi = pdi->die_sibling; | |
91c24f0a | 9172 | } |
91c24f0a DC |
9173 | } |
9174 | ||
6caca83c CC |
9175 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
9176 | ||
9177 | static unsigned int | |
d521ce57 | 9178 | peek_abbrev_code (bfd *abfd, const gdb_byte *info_ptr) |
6caca83c CC |
9179 | { |
9180 | unsigned int bytes_read; | |
9181 | ||
9182 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9183 | } | |
9184 | ||
685af9cd TT |
9185 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit |
9186 | READER::CU. Use READER::ABBREV_TABLE to lookup any abbreviation. | |
9187 | ||
4bb7a0a7 DJ |
9188 | Return the corresponding abbrev, or NULL if the number is zero (indicating |
9189 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
9190 | the initial number. */ | |
9191 | ||
9192 | static struct abbrev_info * | |
685af9cd TT |
9193 | peek_die_abbrev (const die_reader_specs &reader, |
9194 | const gdb_byte *info_ptr, unsigned int *bytes_read) | |
4bb7a0a7 | 9195 | { |
685af9cd | 9196 | dwarf2_cu *cu = reader.cu; |
518817b3 | 9197 | bfd *abfd = cu->per_cu->dwarf2_per_objfile->objfile->obfd; |
685af9cd TT |
9198 | unsigned int abbrev_number |
9199 | = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
4bb7a0a7 DJ |
9200 | |
9201 | if (abbrev_number == 0) | |
9202 | return NULL; | |
9203 | ||
685af9cd | 9204 | abbrev_info *abbrev = reader.abbrev_table->lookup_abbrev (abbrev_number); |
4bb7a0a7 DJ |
9205 | if (!abbrev) |
9206 | { | |
422b9917 | 9207 | error (_("Dwarf Error: Could not find abbrev number %d in %s" |
9d8780f0 | 9208 | " at offset %s [in module %s]"), |
422b9917 | 9209 | abbrev_number, cu->per_cu->is_debug_types ? "TU" : "CU", |
9d8780f0 | 9210 | sect_offset_str (cu->header.sect_off), bfd_get_filename (abfd)); |
4bb7a0a7 DJ |
9211 | } |
9212 | ||
9213 | return abbrev; | |
9214 | } | |
9215 | ||
93311388 DE |
9216 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
9217 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
9218 | DIE. Any children of the skipped DIEs will also be skipped. */ |
9219 | ||
d521ce57 TT |
9220 | static const gdb_byte * |
9221 | skip_children (const struct die_reader_specs *reader, const gdb_byte *info_ptr) | |
4bb7a0a7 | 9222 | { |
4bb7a0a7 DJ |
9223 | while (1) |
9224 | { | |
685af9cd TT |
9225 | unsigned int bytes_read; |
9226 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); | |
9227 | ||
4bb7a0a7 DJ |
9228 | if (abbrev == NULL) |
9229 | return info_ptr + bytes_read; | |
9230 | else | |
dee91e82 | 9231 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
9232 | } |
9233 | } | |
9234 | ||
93311388 DE |
9235 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
9236 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
9237 | abbrev corresponding to that skipped uleb128 should be passed in |
9238 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
9239 | children. */ | |
9240 | ||
d521ce57 TT |
9241 | static const gdb_byte * |
9242 | skip_one_die (const struct die_reader_specs *reader, const gdb_byte *info_ptr, | |
dee91e82 | 9243 | struct abbrev_info *abbrev) |
4bb7a0a7 DJ |
9244 | { |
9245 | unsigned int bytes_read; | |
9246 | struct attribute attr; | |
dee91e82 DE |
9247 | bfd *abfd = reader->abfd; |
9248 | struct dwarf2_cu *cu = reader->cu; | |
d521ce57 | 9249 | const gdb_byte *buffer = reader->buffer; |
f664829e | 9250 | const gdb_byte *buffer_end = reader->buffer_end; |
4bb7a0a7 DJ |
9251 | unsigned int form, i; |
9252 | ||
9253 | for (i = 0; i < abbrev->num_attrs; i++) | |
9254 | { | |
9255 | /* The only abbrev we care about is DW_AT_sibling. */ | |
9256 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
9257 | { | |
dee91e82 | 9258 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
4bb7a0a7 | 9259 | if (attr.form == DW_FORM_ref_addr) |
b98664d3 | 9260 | complaint (_("ignoring absolute DW_AT_sibling")); |
4bb7a0a7 | 9261 | else |
b9502d3f | 9262 | { |
9c541725 PA |
9263 | sect_offset off = dwarf2_get_ref_die_offset (&attr); |
9264 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); | |
b9502d3f WN |
9265 | |
9266 | if (sibling_ptr < info_ptr) | |
b98664d3 | 9267 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 KS |
9268 | else if (sibling_ptr > reader->buffer_end) |
9269 | dwarf2_section_buffer_overflow_complaint (reader->die_section); | |
b9502d3f WN |
9270 | else |
9271 | return sibling_ptr; | |
9272 | } | |
4bb7a0a7 DJ |
9273 | } |
9274 | ||
9275 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
9276 | form = abbrev->attrs[i].form; | |
9277 | skip_attribute: | |
9278 | switch (form) | |
9279 | { | |
4bb7a0a7 | 9280 | case DW_FORM_ref_addr: |
ae411497 TT |
9281 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
9282 | and later it is offset sized. */ | |
9283 | if (cu->header.version == 2) | |
9284 | info_ptr += cu->header.addr_size; | |
9285 | else | |
9286 | info_ptr += cu->header.offset_size; | |
9287 | break; | |
36586728 TT |
9288 | case DW_FORM_GNU_ref_alt: |
9289 | info_ptr += cu->header.offset_size; | |
9290 | break; | |
ae411497 | 9291 | case DW_FORM_addr: |
4bb7a0a7 DJ |
9292 | info_ptr += cu->header.addr_size; |
9293 | break; | |
9294 | case DW_FORM_data1: | |
9295 | case DW_FORM_ref1: | |
9296 | case DW_FORM_flag: | |
9297 | info_ptr += 1; | |
9298 | break; | |
2dc7f7b3 | 9299 | case DW_FORM_flag_present: |
43988095 | 9300 | case DW_FORM_implicit_const: |
2dc7f7b3 | 9301 | break; |
4bb7a0a7 DJ |
9302 | case DW_FORM_data2: |
9303 | case DW_FORM_ref2: | |
9304 | info_ptr += 2; | |
9305 | break; | |
9306 | case DW_FORM_data4: | |
9307 | case DW_FORM_ref4: | |
9308 | info_ptr += 4; | |
9309 | break; | |
9310 | case DW_FORM_data8: | |
9311 | case DW_FORM_ref8: | |
55f1336d | 9312 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
9313 | info_ptr += 8; |
9314 | break; | |
0224619f JK |
9315 | case DW_FORM_data16: |
9316 | info_ptr += 16; | |
9317 | break; | |
4bb7a0a7 | 9318 | case DW_FORM_string: |
9b1c24c8 | 9319 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
9320 | info_ptr += bytes_read; |
9321 | break; | |
2dc7f7b3 | 9322 | case DW_FORM_sec_offset: |
4bb7a0a7 | 9323 | case DW_FORM_strp: |
36586728 | 9324 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
9325 | info_ptr += cu->header.offset_size; |
9326 | break; | |
2dc7f7b3 | 9327 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
9328 | case DW_FORM_block: |
9329 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9330 | info_ptr += bytes_read; | |
9331 | break; | |
9332 | case DW_FORM_block1: | |
9333 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
9334 | break; | |
9335 | case DW_FORM_block2: | |
9336 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
9337 | break; | |
9338 | case DW_FORM_block4: | |
9339 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
9340 | break; | |
9341 | case DW_FORM_sdata: | |
9342 | case DW_FORM_udata: | |
9343 | case DW_FORM_ref_udata: | |
3019eac3 DE |
9344 | case DW_FORM_GNU_addr_index: |
9345 | case DW_FORM_GNU_str_index: | |
d521ce57 | 9346 | info_ptr = safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
9347 | break; |
9348 | case DW_FORM_indirect: | |
9349 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9350 | info_ptr += bytes_read; | |
9351 | /* We need to continue parsing from here, so just go back to | |
9352 | the top. */ | |
9353 | goto skip_attribute; | |
9354 | ||
9355 | default: | |
3e43a32a MS |
9356 | error (_("Dwarf Error: Cannot handle %s " |
9357 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
9358 | dwarf_form_name (form), |
9359 | bfd_get_filename (abfd)); | |
9360 | } | |
9361 | } | |
9362 | ||
9363 | if (abbrev->has_children) | |
dee91e82 | 9364 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
9365 | else |
9366 | return info_ptr; | |
9367 | } | |
9368 | ||
93311388 | 9369 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 9370 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 9371 | |
d521ce57 | 9372 | static const gdb_byte * |
dee91e82 DE |
9373 | locate_pdi_sibling (const struct die_reader_specs *reader, |
9374 | struct partial_die_info *orig_pdi, | |
d521ce57 | 9375 | const gdb_byte *info_ptr) |
91c24f0a DC |
9376 | { |
9377 | /* Do we know the sibling already? */ | |
72bf9492 | 9378 | |
91c24f0a DC |
9379 | if (orig_pdi->sibling) |
9380 | return orig_pdi->sibling; | |
9381 | ||
9382 | /* Are there any children to deal with? */ | |
9383 | ||
9384 | if (!orig_pdi->has_children) | |
9385 | return info_ptr; | |
9386 | ||
4bb7a0a7 | 9387 | /* Skip the children the long way. */ |
91c24f0a | 9388 | |
dee91e82 | 9389 | return skip_children (reader, info_ptr); |
91c24f0a DC |
9390 | } |
9391 | ||
257e7a09 | 9392 | /* Expand this partial symbol table into a full symbol table. SELF is |
442e4d9c | 9393 | not NULL. */ |
c906108c SS |
9394 | |
9395 | static void | |
257e7a09 YQ |
9396 | dwarf2_read_symtab (struct partial_symtab *self, |
9397 | struct objfile *objfile) | |
c906108c | 9398 | { |
ed2dc618 SM |
9399 | struct dwarf2_per_objfile *dwarf2_per_objfile |
9400 | = get_dwarf2_per_objfile (objfile); | |
9401 | ||
257e7a09 | 9402 | if (self->readin) |
c906108c | 9403 | { |
442e4d9c | 9404 | warning (_("bug: psymtab for %s is already read in."), |
257e7a09 | 9405 | self->filename); |
442e4d9c YQ |
9406 | } |
9407 | else | |
9408 | { | |
9409 | if (info_verbose) | |
c906108c | 9410 | { |
442e4d9c | 9411 | printf_filtered (_("Reading in symbols for %s..."), |
257e7a09 | 9412 | self->filename); |
442e4d9c | 9413 | gdb_flush (gdb_stdout); |
c906108c | 9414 | } |
c906108c | 9415 | |
442e4d9c YQ |
9416 | /* If this psymtab is constructed from a debug-only objfile, the |
9417 | has_section_at_zero flag will not necessarily be correct. We | |
9418 | can get the correct value for this flag by looking at the data | |
9419 | associated with the (presumably stripped) associated objfile. */ | |
9420 | if (objfile->separate_debug_objfile_backlink) | |
9421 | { | |
9422 | struct dwarf2_per_objfile *dpo_backlink | |
ed2dc618 | 9423 | = get_dwarf2_per_objfile (objfile->separate_debug_objfile_backlink); |
9a619af0 | 9424 | |
442e4d9c YQ |
9425 | dwarf2_per_objfile->has_section_at_zero |
9426 | = dpo_backlink->has_section_at_zero; | |
9427 | } | |
b2ab525c | 9428 | |
442e4d9c | 9429 | dwarf2_per_objfile->reading_partial_symbols = 0; |
98bfdba5 | 9430 | |
257e7a09 | 9431 | psymtab_to_symtab_1 (self); |
c906108c | 9432 | |
442e4d9c YQ |
9433 | /* Finish up the debug error message. */ |
9434 | if (info_verbose) | |
9435 | printf_filtered (_("done.\n")); | |
c906108c | 9436 | } |
95554aad | 9437 | |
ed2dc618 | 9438 | process_cu_includes (dwarf2_per_objfile); |
c906108c | 9439 | } |
9cdd5dbd DE |
9440 | \f |
9441 | /* Reading in full CUs. */ | |
c906108c | 9442 | |
10b3939b DJ |
9443 | /* Add PER_CU to the queue. */ |
9444 | ||
9445 | static void | |
95554aad TT |
9446 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
9447 | enum language pretend_language) | |
10b3939b DJ |
9448 | { |
9449 | struct dwarf2_queue_item *item; | |
9450 | ||
9451 | per_cu->queued = 1; | |
8d749320 | 9452 | item = XNEW (struct dwarf2_queue_item); |
10b3939b | 9453 | item->per_cu = per_cu; |
95554aad | 9454 | item->pretend_language = pretend_language; |
10b3939b DJ |
9455 | item->next = NULL; |
9456 | ||
9457 | if (dwarf2_queue == NULL) | |
9458 | dwarf2_queue = item; | |
9459 | else | |
9460 | dwarf2_queue_tail->next = item; | |
9461 | ||
9462 | dwarf2_queue_tail = item; | |
9463 | } | |
9464 | ||
89e63ee4 DE |
9465 | /* If PER_CU is not yet queued, add it to the queue. |
9466 | If DEPENDENT_CU is non-NULL, it has a reference to PER_CU so add a | |
9467 | dependency. | |
0907af0c | 9468 | The result is non-zero if PER_CU was queued, otherwise the result is zero |
69d751e3 DE |
9469 | meaning either PER_CU is already queued or it is already loaded. |
9470 | ||
9471 | N.B. There is an invariant here that if a CU is queued then it is loaded. | |
9472 | The caller is required to load PER_CU if we return non-zero. */ | |
0907af0c DE |
9473 | |
9474 | static int | |
89e63ee4 | 9475 | maybe_queue_comp_unit (struct dwarf2_cu *dependent_cu, |
0907af0c DE |
9476 | struct dwarf2_per_cu_data *per_cu, |
9477 | enum language pretend_language) | |
9478 | { | |
9479 | /* We may arrive here during partial symbol reading, if we need full | |
9480 | DIEs to process an unusual case (e.g. template arguments). Do | |
9481 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
ed2dc618 | 9482 | if (per_cu->dwarf2_per_objfile->reading_partial_symbols) |
0907af0c DE |
9483 | { |
9484 | if (per_cu->cu == NULL || per_cu->cu->dies == NULL) | |
9485 | return 1; | |
9486 | return 0; | |
9487 | } | |
9488 | ||
9489 | /* Mark the dependence relation so that we don't flush PER_CU | |
9490 | too early. */ | |
89e63ee4 DE |
9491 | if (dependent_cu != NULL) |
9492 | dwarf2_add_dependence (dependent_cu, per_cu); | |
0907af0c DE |
9493 | |
9494 | /* If it's already on the queue, we have nothing to do. */ | |
9495 | if (per_cu->queued) | |
9496 | return 0; | |
9497 | ||
9498 | /* If the compilation unit is already loaded, just mark it as | |
9499 | used. */ | |
9500 | if (per_cu->cu != NULL) | |
9501 | { | |
9502 | per_cu->cu->last_used = 0; | |
9503 | return 0; | |
9504 | } | |
9505 | ||
9506 | /* Add it to the queue. */ | |
9507 | queue_comp_unit (per_cu, pretend_language); | |
9508 | ||
9509 | return 1; | |
9510 | } | |
9511 | ||
10b3939b DJ |
9512 | /* Process the queue. */ |
9513 | ||
9514 | static void | |
ed2dc618 | 9515 | process_queue (struct dwarf2_per_objfile *dwarf2_per_objfile) |
10b3939b DJ |
9516 | { |
9517 | struct dwarf2_queue_item *item, *next_item; | |
9518 | ||
b4f54984 | 9519 | if (dwarf_read_debug) |
45cfd468 DE |
9520 | { |
9521 | fprintf_unfiltered (gdb_stdlog, | |
9522 | "Expanding one or more symtabs of objfile %s ...\n", | |
4262abfb | 9523 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 DE |
9524 | } |
9525 | ||
03dd20cc DJ |
9526 | /* The queue starts out with one item, but following a DIE reference |
9527 | may load a new CU, adding it to the end of the queue. */ | |
10b3939b DJ |
9528 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) |
9529 | { | |
cc12ce38 DE |
9530 | if ((dwarf2_per_objfile->using_index |
9531 | ? !item->per_cu->v.quick->compunit_symtab | |
9532 | : (item->per_cu->v.psymtab && !item->per_cu->v.psymtab->readin)) | |
9533 | /* Skip dummy CUs. */ | |
9534 | && item->per_cu->cu != NULL) | |
f4dc4d17 DE |
9535 | { |
9536 | struct dwarf2_per_cu_data *per_cu = item->per_cu; | |
73be47f5 | 9537 | unsigned int debug_print_threshold; |
247f5c4f | 9538 | char buf[100]; |
f4dc4d17 | 9539 | |
247f5c4f | 9540 | if (per_cu->is_debug_types) |
f4dc4d17 | 9541 | { |
247f5c4f DE |
9542 | struct signatured_type *sig_type = |
9543 | (struct signatured_type *) per_cu; | |
9544 | ||
9d8780f0 | 9545 | sprintf (buf, "TU %s at offset %s", |
73be47f5 | 9546 | hex_string (sig_type->signature), |
9d8780f0 | 9547 | sect_offset_str (per_cu->sect_off)); |
73be47f5 DE |
9548 | /* There can be 100s of TUs. |
9549 | Only print them in verbose mode. */ | |
9550 | debug_print_threshold = 2; | |
f4dc4d17 | 9551 | } |
247f5c4f | 9552 | else |
73be47f5 | 9553 | { |
9d8780f0 SM |
9554 | sprintf (buf, "CU at offset %s", |
9555 | sect_offset_str (per_cu->sect_off)); | |
73be47f5 DE |
9556 | debug_print_threshold = 1; |
9557 | } | |
247f5c4f | 9558 | |
b4f54984 | 9559 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 9560 | fprintf_unfiltered (gdb_stdlog, "Expanding symtab of %s\n", buf); |
f4dc4d17 DE |
9561 | |
9562 | if (per_cu->is_debug_types) | |
9563 | process_full_type_unit (per_cu, item->pretend_language); | |
9564 | else | |
9565 | process_full_comp_unit (per_cu, item->pretend_language); | |
9566 | ||
b4f54984 | 9567 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 9568 | fprintf_unfiltered (gdb_stdlog, "Done expanding %s\n", buf); |
f4dc4d17 | 9569 | } |
10b3939b DJ |
9570 | |
9571 | item->per_cu->queued = 0; | |
9572 | next_item = item->next; | |
9573 | xfree (item); | |
9574 | } | |
9575 | ||
9576 | dwarf2_queue_tail = NULL; | |
45cfd468 | 9577 | |
b4f54984 | 9578 | if (dwarf_read_debug) |
45cfd468 DE |
9579 | { |
9580 | fprintf_unfiltered (gdb_stdlog, "Done expanding symtabs of %s.\n", | |
4262abfb | 9581 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 | 9582 | } |
10b3939b DJ |
9583 | } |
9584 | ||
10b3939b DJ |
9585 | /* Read in full symbols for PST, and anything it depends on. */ |
9586 | ||
c906108c | 9587 | static void |
fba45db2 | 9588 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c | 9589 | { |
10b3939b | 9590 | struct dwarf2_per_cu_data *per_cu; |
aaa75496 JB |
9591 | int i; |
9592 | ||
95554aad TT |
9593 | if (pst->readin) |
9594 | return; | |
9595 | ||
aaa75496 | 9596 | for (i = 0; i < pst->number_of_dependencies; i++) |
95554aad TT |
9597 | if (!pst->dependencies[i]->readin |
9598 | && pst->dependencies[i]->user == NULL) | |
aaa75496 JB |
9599 | { |
9600 | /* Inform about additional files that need to be read in. */ | |
9601 | if (info_verbose) | |
9602 | { | |
a3f17187 | 9603 | /* FIXME: i18n: Need to make this a single string. */ |
aaa75496 JB |
9604 | fputs_filtered (" ", gdb_stdout); |
9605 | wrap_here (""); | |
9606 | fputs_filtered ("and ", gdb_stdout); | |
9607 | wrap_here (""); | |
9608 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
0963b4bd | 9609 | wrap_here (""); /* Flush output. */ |
aaa75496 JB |
9610 | gdb_flush (gdb_stdout); |
9611 | } | |
9612 | psymtab_to_symtab_1 (pst->dependencies[i]); | |
9613 | } | |
9614 | ||
9a3c8263 | 9615 | per_cu = (struct dwarf2_per_cu_data *) pst->read_symtab_private; |
10b3939b DJ |
9616 | |
9617 | if (per_cu == NULL) | |
aaa75496 JB |
9618 | { |
9619 | /* It's an include file, no symbols to read for it. | |
9620 | Everything is in the parent symtab. */ | |
9621 | pst->readin = 1; | |
9622 | return; | |
9623 | } | |
c906108c | 9624 | |
58f0c718 | 9625 | dw2_do_instantiate_symtab (per_cu, false); |
10b3939b DJ |
9626 | } |
9627 | ||
dee91e82 DE |
9628 | /* Trivial hash function for die_info: the hash value of a DIE |
9629 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 9630 | |
dee91e82 DE |
9631 | static hashval_t |
9632 | die_hash (const void *item) | |
10b3939b | 9633 | { |
9a3c8263 | 9634 | const struct die_info *die = (const struct die_info *) item; |
6502dd73 | 9635 | |
9c541725 | 9636 | return to_underlying (die->sect_off); |
dee91e82 | 9637 | } |
63d06c5c | 9638 | |
dee91e82 DE |
9639 | /* Trivial comparison function for die_info structures: two DIEs |
9640 | are equal if they have the same offset. */ | |
98bfdba5 | 9641 | |
dee91e82 DE |
9642 | static int |
9643 | die_eq (const void *item_lhs, const void *item_rhs) | |
9644 | { | |
9a3c8263 SM |
9645 | const struct die_info *die_lhs = (const struct die_info *) item_lhs; |
9646 | const struct die_info *die_rhs = (const struct die_info *) item_rhs; | |
c906108c | 9647 | |
9c541725 | 9648 | return die_lhs->sect_off == die_rhs->sect_off; |
dee91e82 | 9649 | } |
c906108c | 9650 | |
dee91e82 DE |
9651 | /* die_reader_func for load_full_comp_unit. |
9652 | This is identical to read_signatured_type_reader, | |
9653 | but is kept separate for now. */ | |
c906108c | 9654 | |
dee91e82 DE |
9655 | static void |
9656 | load_full_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 9657 | const gdb_byte *info_ptr, |
dee91e82 DE |
9658 | struct die_info *comp_unit_die, |
9659 | int has_children, | |
9660 | void *data) | |
9661 | { | |
9662 | struct dwarf2_cu *cu = reader->cu; | |
9a3c8263 | 9663 | enum language *language_ptr = (enum language *) data; |
6caca83c | 9664 | |
dee91e82 DE |
9665 | gdb_assert (cu->die_hash == NULL); |
9666 | cu->die_hash = | |
9667 | htab_create_alloc_ex (cu->header.length / 12, | |
9668 | die_hash, | |
9669 | die_eq, | |
9670 | NULL, | |
9671 | &cu->comp_unit_obstack, | |
9672 | hashtab_obstack_allocate, | |
9673 | dummy_obstack_deallocate); | |
e142c38c | 9674 | |
dee91e82 DE |
9675 | if (has_children) |
9676 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
9677 | &info_ptr, comp_unit_die); | |
9678 | cu->dies = comp_unit_die; | |
9679 | /* comp_unit_die is not stored in die_hash, no need. */ | |
10b3939b DJ |
9680 | |
9681 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 9682 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 9683 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
9684 | or we won't be able to build types correctly. |
9685 | Similarly, if we do not read the producer, we can not apply | |
9686 | producer-specific interpretation. */ | |
95554aad | 9687 | prepare_one_comp_unit (cu, cu->dies, *language_ptr); |
dee91e82 | 9688 | } |
10b3939b | 9689 | |
dee91e82 | 9690 | /* Load the DIEs associated with PER_CU into memory. */ |
a6c727b2 | 9691 | |
dee91e82 | 9692 | static void |
95554aad | 9693 | load_full_comp_unit (struct dwarf2_per_cu_data *this_cu, |
58f0c718 | 9694 | bool skip_partial, |
95554aad | 9695 | enum language pretend_language) |
dee91e82 | 9696 | { |
3019eac3 | 9697 | gdb_assert (! this_cu->is_debug_types); |
c5b7e1cb | 9698 | |
58f0c718 | 9699 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, skip_partial, |
f4dc4d17 | 9700 | load_full_comp_unit_reader, &pretend_language); |
10b3939b DJ |
9701 | } |
9702 | ||
3da10d80 KS |
9703 | /* Add a DIE to the delayed physname list. */ |
9704 | ||
9705 | static void | |
9706 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
9707 | const char *name, struct die_info *die, | |
9708 | struct dwarf2_cu *cu) | |
9709 | { | |
9710 | struct delayed_method_info mi; | |
9711 | mi.type = type; | |
9712 | mi.fnfield_index = fnfield_index; | |
9713 | mi.index = index; | |
9714 | mi.name = name; | |
9715 | mi.die = die; | |
c89b44cd | 9716 | cu->method_list.push_back (mi); |
3da10d80 KS |
9717 | } |
9718 | ||
3693fdb3 PA |
9719 | /* Check whether [PHYSNAME, PHYSNAME+LEN) ends with a modifier like |
9720 | "const" / "volatile". If so, decrements LEN by the length of the | |
9721 | modifier and return true. Otherwise return false. */ | |
9722 | ||
9723 | template<size_t N> | |
9724 | static bool | |
9725 | check_modifier (const char *physname, size_t &len, const char (&mod)[N]) | |
9726 | { | |
9727 | size_t mod_len = sizeof (mod) - 1; | |
9728 | if (len > mod_len && startswith (physname + (len - mod_len), mod)) | |
9729 | { | |
9730 | len -= mod_len; | |
9731 | return true; | |
9732 | } | |
9733 | return false; | |
9734 | } | |
9735 | ||
3da10d80 KS |
9736 | /* Compute the physnames of any methods on the CU's method list. |
9737 | ||
9738 | The computation of method physnames is delayed in order to avoid the | |
9739 | (bad) condition that one of the method's formal parameters is of an as yet | |
9740 | incomplete type. */ | |
9741 | ||
9742 | static void | |
9743 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
9744 | { | |
3693fdb3 | 9745 | /* Only C++ delays computing physnames. */ |
c89b44cd | 9746 | if (cu->method_list.empty ()) |
3693fdb3 PA |
9747 | return; |
9748 | gdb_assert (cu->language == language_cplus); | |
9749 | ||
52941706 | 9750 | for (const delayed_method_info &mi : cu->method_list) |
3da10d80 | 9751 | { |
1d06ead6 | 9752 | const char *physname; |
3da10d80 | 9753 | struct fn_fieldlist *fn_flp |
c89b44cd TT |
9754 | = &TYPE_FN_FIELDLIST (mi.type, mi.fnfield_index); |
9755 | physname = dwarf2_physname (mi.name, mi.die, cu); | |
9756 | TYPE_FN_FIELD_PHYSNAME (fn_flp->fn_fields, mi.index) | |
005e54bb | 9757 | = physname ? physname : ""; |
3693fdb3 PA |
9758 | |
9759 | /* Since there's no tag to indicate whether a method is a | |
9760 | const/volatile overload, extract that information out of the | |
9761 | demangled name. */ | |
9762 | if (physname != NULL) | |
9763 | { | |
9764 | size_t len = strlen (physname); | |
9765 | ||
9766 | while (1) | |
9767 | { | |
9768 | if (physname[len] == ')') /* shortcut */ | |
9769 | break; | |
9770 | else if (check_modifier (physname, len, " const")) | |
c89b44cd | 9771 | TYPE_FN_FIELD_CONST (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 | 9772 | else if (check_modifier (physname, len, " volatile")) |
c89b44cd | 9773 | TYPE_FN_FIELD_VOLATILE (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 PA |
9774 | else |
9775 | break; | |
9776 | } | |
9777 | } | |
3da10d80 | 9778 | } |
c89b44cd TT |
9779 | |
9780 | /* The list is no longer needed. */ | |
9781 | cu->method_list.clear (); | |
3da10d80 KS |
9782 | } |
9783 | ||
380618d6 KS |
9784 | /* A wrapper for add_symbol_to_list to ensure that SYMBOL's language is |
9785 | the same as all other symbols in LISTHEAD. If a new symbol is added | |
9786 | with a different language, this function asserts. */ | |
9787 | ||
9788 | static inline void | |
9789 | dw2_add_symbol_to_list (struct symbol *symbol, struct pending **listhead) | |
9790 | { | |
9791 | /* Only assert if LISTHEAD already contains symbols of a different | |
9792 | language (dict_create_hashed/insert_symbol_hashed requires that all | |
9793 | symbols in this list are of the same language). */ | |
9794 | gdb_assert ((*listhead) == NULL | |
9795 | || (SYMBOL_LANGUAGE ((*listhead)->symbol[0]) | |
9796 | == SYMBOL_LANGUAGE (symbol))); | |
9797 | ||
9798 | add_symbol_to_list (symbol, listhead); | |
9799 | } | |
9800 | ||
a766d390 DE |
9801 | /* Go objects should be embedded in a DW_TAG_module DIE, |
9802 | and it's not clear if/how imported objects will appear. | |
9803 | To keep Go support simple until that's worked out, | |
9804 | go back through what we've read and create something usable. | |
9805 | We could do this while processing each DIE, and feels kinda cleaner, | |
9806 | but that way is more invasive. | |
9807 | This is to, for example, allow the user to type "p var" or "b main" | |
9808 | without having to specify the package name, and allow lookups | |
9809 | of module.object to work in contexts that use the expression | |
9810 | parser. */ | |
9811 | ||
9812 | static void | |
9813 | fixup_go_packaging (struct dwarf2_cu *cu) | |
9814 | { | |
9815 | char *package_name = NULL; | |
9816 | struct pending *list; | |
9817 | int i; | |
9818 | ||
804d2729 TT |
9819 | for (list = *cu->builder->get_global_symbols (); |
9820 | list != NULL; | |
9821 | list = list->next) | |
a766d390 DE |
9822 | { |
9823 | for (i = 0; i < list->nsyms; ++i) | |
9824 | { | |
9825 | struct symbol *sym = list->symbol[i]; | |
9826 | ||
9827 | if (SYMBOL_LANGUAGE (sym) == language_go | |
9828 | && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
9829 | { | |
9830 | char *this_package_name = go_symbol_package_name (sym); | |
9831 | ||
9832 | if (this_package_name == NULL) | |
9833 | continue; | |
9834 | if (package_name == NULL) | |
9835 | package_name = this_package_name; | |
9836 | else | |
9837 | { | |
518817b3 SM |
9838 | struct objfile *objfile |
9839 | = cu->per_cu->dwarf2_per_objfile->objfile; | |
a766d390 | 9840 | if (strcmp (package_name, this_package_name) != 0) |
b98664d3 | 9841 | complaint (_("Symtab %s has objects from two different Go packages: %s and %s"), |
08be3fe3 DE |
9842 | (symbol_symtab (sym) != NULL |
9843 | ? symtab_to_filename_for_display | |
9844 | (symbol_symtab (sym)) | |
e3b94546 | 9845 | : objfile_name (objfile)), |
a766d390 DE |
9846 | this_package_name, package_name); |
9847 | xfree (this_package_name); | |
9848 | } | |
9849 | } | |
9850 | } | |
9851 | } | |
9852 | ||
9853 | if (package_name != NULL) | |
9854 | { | |
518817b3 | 9855 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
34a68019 | 9856 | const char *saved_package_name |
224c3ddb SM |
9857 | = (const char *) obstack_copy0 (&objfile->per_bfd->storage_obstack, |
9858 | package_name, | |
9859 | strlen (package_name)); | |
19f392bc UW |
9860 | struct type *type = init_type (objfile, TYPE_CODE_MODULE, 0, |
9861 | saved_package_name); | |
a766d390 DE |
9862 | struct symbol *sym; |
9863 | ||
e623cf5d | 9864 | sym = allocate_symbol (objfile); |
f85f34ed | 9865 | SYMBOL_SET_LANGUAGE (sym, language_go, &objfile->objfile_obstack); |
86f62fd7 TT |
9866 | SYMBOL_SET_NAMES (sym, saved_package_name, |
9867 | strlen (saved_package_name), 0, objfile); | |
a766d390 DE |
9868 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, |
9869 | e.g., "main" finds the "main" module and not C's main(). */ | |
9870 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
f1e6e072 | 9871 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
a766d390 DE |
9872 | SYMBOL_TYPE (sym) = type; |
9873 | ||
380618d6 | 9874 | dw2_add_symbol_to_list (sym, cu->builder->get_global_symbols ()); |
a766d390 DE |
9875 | |
9876 | xfree (package_name); | |
9877 | } | |
9878 | } | |
9879 | ||
c9317f21 TT |
9880 | /* Allocate a fully-qualified name consisting of the two parts on the |
9881 | obstack. */ | |
9882 | ||
9883 | static const char * | |
9884 | rust_fully_qualify (struct obstack *obstack, const char *p1, const char *p2) | |
9885 | { | |
9886 | return obconcat (obstack, p1, "::", p2, (char *) NULL); | |
9887 | } | |
9888 | ||
9889 | /* A helper that allocates a struct discriminant_info to attach to a | |
9890 | union type. */ | |
9891 | ||
9892 | static struct discriminant_info * | |
9893 | alloc_discriminant_info (struct type *type, int discriminant_index, | |
9894 | int default_index) | |
9895 | { | |
9896 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_UNION); | |
c7b15a66 TT |
9897 | gdb_assert (discriminant_index == -1 |
9898 | || (discriminant_index >= 0 | |
9899 | && discriminant_index < TYPE_NFIELDS (type))); | |
c9317f21 | 9900 | gdb_assert (default_index == -1 |
c7b15a66 | 9901 | || (default_index >= 0 && default_index < TYPE_NFIELDS (type))); |
c9317f21 TT |
9902 | |
9903 | TYPE_FLAG_DISCRIMINATED_UNION (type) = 1; | |
9904 | ||
9905 | struct discriminant_info *disc | |
9906 | = ((struct discriminant_info *) | |
9907 | TYPE_ZALLOC (type, | |
9908 | offsetof (struct discriminant_info, discriminants) | |
9909 | + TYPE_NFIELDS (type) * sizeof (disc->discriminants[0]))); | |
9910 | disc->default_index = default_index; | |
9911 | disc->discriminant_index = discriminant_index; | |
9912 | ||
9913 | struct dynamic_prop prop; | |
9914 | prop.kind = PROP_UNDEFINED; | |
9915 | prop.data.baton = disc; | |
9916 | ||
9917 | add_dyn_prop (DYN_PROP_DISCRIMINATED, prop, type); | |
9918 | ||
9919 | return disc; | |
9920 | } | |
9921 | ||
9922 | /* Some versions of rustc emitted enums in an unusual way. | |
9923 | ||
9924 | Ordinary enums were emitted as unions. The first element of each | |
9925 | structure in the union was named "RUST$ENUM$DISR". This element | |
9926 | held the discriminant. | |
9927 | ||
9928 | These versions of Rust also implemented the "non-zero" | |
9929 | optimization. When the enum had two values, and one is empty and | |
9930 | the other holds a pointer that cannot be zero, the pointer is used | |
9931 | as the discriminant, with a zero value meaning the empty variant. | |
9932 | Here, the union's first member is of the form | |
9933 | RUST$ENCODED$ENUM$<fieldno>$<fieldno>$...$<variantname> | |
9934 | where the fieldnos are the indices of the fields that should be | |
9935 | traversed in order to find the field (which may be several fields deep) | |
9936 | and the variantname is the name of the variant of the case when the | |
9937 | field is zero. | |
9938 | ||
9939 | This function recognizes whether TYPE is of one of these forms, | |
9940 | and, if so, smashes it to be a variant type. */ | |
9941 | ||
9942 | static void | |
9943 | quirk_rust_enum (struct type *type, struct objfile *objfile) | |
9944 | { | |
9945 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_UNION); | |
9946 | ||
9947 | /* We don't need to deal with empty enums. */ | |
9948 | if (TYPE_NFIELDS (type) == 0) | |
9949 | return; | |
9950 | ||
9951 | #define RUST_ENUM_PREFIX "RUST$ENCODED$ENUM$" | |
9952 | if (TYPE_NFIELDS (type) == 1 | |
9953 | && startswith (TYPE_FIELD_NAME (type, 0), RUST_ENUM_PREFIX)) | |
9954 | { | |
9955 | const char *name = TYPE_FIELD_NAME (type, 0) + strlen (RUST_ENUM_PREFIX); | |
9956 | ||
9957 | /* Decode the field name to find the offset of the | |
9958 | discriminant. */ | |
9959 | ULONGEST bit_offset = 0; | |
9960 | struct type *field_type = TYPE_FIELD_TYPE (type, 0); | |
9961 | while (name[0] >= '0' && name[0] <= '9') | |
9962 | { | |
9963 | char *tail; | |
9964 | unsigned long index = strtoul (name, &tail, 10); | |
9965 | name = tail; | |
9966 | if (*name != '$' | |
9967 | || index >= TYPE_NFIELDS (field_type) | |
9968 | || (TYPE_FIELD_LOC_KIND (field_type, index) | |
9969 | != FIELD_LOC_KIND_BITPOS)) | |
9970 | { | |
b98664d3 | 9971 | complaint (_("Could not parse Rust enum encoding string \"%s\"" |
c9317f21 TT |
9972 | "[in module %s]"), |
9973 | TYPE_FIELD_NAME (type, 0), | |
9974 | objfile_name (objfile)); | |
9975 | return; | |
9976 | } | |
9977 | ++name; | |
9978 | ||
9979 | bit_offset += TYPE_FIELD_BITPOS (field_type, index); | |
9980 | field_type = TYPE_FIELD_TYPE (field_type, index); | |
9981 | } | |
9982 | ||
9983 | /* Make a union to hold the variants. */ | |
9984 | struct type *union_type = alloc_type (objfile); | |
9985 | TYPE_CODE (union_type) = TYPE_CODE_UNION; | |
9986 | TYPE_NFIELDS (union_type) = 3; | |
9987 | TYPE_FIELDS (union_type) | |
9988 | = (struct field *) TYPE_ZALLOC (type, 3 * sizeof (struct field)); | |
9989 | TYPE_LENGTH (union_type) = TYPE_LENGTH (type); | |
2b4424c3 | 9990 | set_type_align (union_type, TYPE_RAW_ALIGN (type)); |
c9317f21 TT |
9991 | |
9992 | /* Put the discriminant must at index 0. */ | |
9993 | TYPE_FIELD_TYPE (union_type, 0) = field_type; | |
9994 | TYPE_FIELD_ARTIFICIAL (union_type, 0) = 1; | |
9995 | TYPE_FIELD_NAME (union_type, 0) = "<<discriminant>>"; | |
9996 | SET_FIELD_BITPOS (TYPE_FIELD (union_type, 0), bit_offset); | |
9997 | ||
9998 | /* The order of fields doesn't really matter, so put the real | |
9999 | field at index 1 and the data-less field at index 2. */ | |
10000 | struct discriminant_info *disc | |
10001 | = alloc_discriminant_info (union_type, 0, 1); | |
10002 | TYPE_FIELD (union_type, 1) = TYPE_FIELD (type, 0); | |
10003 | TYPE_FIELD_NAME (union_type, 1) | |
10004 | = rust_last_path_segment (TYPE_NAME (TYPE_FIELD_TYPE (union_type, 1))); | |
10005 | TYPE_NAME (TYPE_FIELD_TYPE (union_type, 1)) | |
10006 | = rust_fully_qualify (&objfile->objfile_obstack, TYPE_NAME (type), | |
10007 | TYPE_FIELD_NAME (union_type, 1)); | |
10008 | ||
10009 | const char *dataless_name | |
10010 | = rust_fully_qualify (&objfile->objfile_obstack, TYPE_NAME (type), | |
10011 | name); | |
10012 | struct type *dataless_type = init_type (objfile, TYPE_CODE_VOID, 0, | |
10013 | dataless_name); | |
10014 | TYPE_FIELD_TYPE (union_type, 2) = dataless_type; | |
10015 | /* NAME points into the original discriminant name, which | |
10016 | already has the correct lifetime. */ | |
10017 | TYPE_FIELD_NAME (union_type, 2) = name; | |
10018 | SET_FIELD_BITPOS (TYPE_FIELD (union_type, 2), 0); | |
10019 | disc->discriminants[2] = 0; | |
10020 | ||
10021 | /* Smash this type to be a structure type. We have to do this | |
10022 | because the type has already been recorded. */ | |
10023 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
10024 | TYPE_NFIELDS (type) = 1; | |
10025 | TYPE_FIELDS (type) | |
10026 | = (struct field *) TYPE_ZALLOC (type, sizeof (struct field)); | |
10027 | ||
10028 | /* Install the variant part. */ | |
10029 | TYPE_FIELD_TYPE (type, 0) = union_type; | |
10030 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), 0); | |
10031 | TYPE_FIELD_NAME (type, 0) = "<<variants>>"; | |
10032 | } | |
10033 | else if (TYPE_NFIELDS (type) == 1) | |
10034 | { | |
10035 | /* We assume that a union with a single field is a univariant | |
10036 | enum. */ | |
10037 | /* Smash this type to be a structure type. We have to do this | |
10038 | because the type has already been recorded. */ | |
10039 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
10040 | ||
10041 | /* Make a union to hold the variants. */ | |
10042 | struct type *union_type = alloc_type (objfile); | |
10043 | TYPE_CODE (union_type) = TYPE_CODE_UNION; | |
10044 | TYPE_NFIELDS (union_type) = TYPE_NFIELDS (type); | |
10045 | TYPE_LENGTH (union_type) = TYPE_LENGTH (type); | |
2b4424c3 | 10046 | set_type_align (union_type, TYPE_RAW_ALIGN (type)); |
c9317f21 TT |
10047 | TYPE_FIELDS (union_type) = TYPE_FIELDS (type); |
10048 | ||
10049 | struct type *field_type = TYPE_FIELD_TYPE (union_type, 0); | |
10050 | const char *variant_name | |
10051 | = rust_last_path_segment (TYPE_NAME (field_type)); | |
10052 | TYPE_FIELD_NAME (union_type, 0) = variant_name; | |
10053 | TYPE_NAME (field_type) | |
10054 | = rust_fully_qualify (&objfile->objfile_obstack, | |
c7b15a66 | 10055 | TYPE_NAME (type), variant_name); |
c9317f21 TT |
10056 | |
10057 | /* Install the union in the outer struct type. */ | |
10058 | TYPE_NFIELDS (type) = 1; | |
10059 | TYPE_FIELDS (type) | |
10060 | = (struct field *) TYPE_ZALLOC (union_type, sizeof (struct field)); | |
10061 | TYPE_FIELD_TYPE (type, 0) = union_type; | |
10062 | TYPE_FIELD_NAME (type, 0) = "<<variants>>"; | |
10063 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), 0); | |
10064 | ||
10065 | alloc_discriminant_info (union_type, -1, 0); | |
10066 | } | |
10067 | else | |
10068 | { | |
10069 | struct type *disr_type = nullptr; | |
10070 | for (int i = 0; i < TYPE_NFIELDS (type); ++i) | |
10071 | { | |
10072 | disr_type = TYPE_FIELD_TYPE (type, i); | |
10073 | ||
a037790e TT |
10074 | if (TYPE_CODE (disr_type) != TYPE_CODE_STRUCT) |
10075 | { | |
10076 | /* All fields of a true enum will be structs. */ | |
10077 | return; | |
10078 | } | |
10079 | else if (TYPE_NFIELDS (disr_type) == 0) | |
c9317f21 TT |
10080 | { |
10081 | /* Could be data-less variant, so keep going. */ | |
a037790e | 10082 | disr_type = nullptr; |
c9317f21 TT |
10083 | } |
10084 | else if (strcmp (TYPE_FIELD_NAME (disr_type, 0), | |
10085 | "RUST$ENUM$DISR") != 0) | |
10086 | { | |
10087 | /* Not a Rust enum. */ | |
10088 | return; | |
10089 | } | |
10090 | else | |
10091 | { | |
10092 | /* Found one. */ | |
10093 | break; | |
10094 | } | |
10095 | } | |
10096 | ||
10097 | /* If we got here without a discriminant, then it's probably | |
10098 | just a union. */ | |
10099 | if (disr_type == nullptr) | |
10100 | return; | |
10101 | ||
10102 | /* Smash this type to be a structure type. We have to do this | |
10103 | because the type has already been recorded. */ | |
10104 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
10105 | ||
10106 | /* Make a union to hold the variants. */ | |
10107 | struct field *disr_field = &TYPE_FIELD (disr_type, 0); | |
10108 | struct type *union_type = alloc_type (objfile); | |
10109 | TYPE_CODE (union_type) = TYPE_CODE_UNION; | |
10110 | TYPE_NFIELDS (union_type) = 1 + TYPE_NFIELDS (type); | |
10111 | TYPE_LENGTH (union_type) = TYPE_LENGTH (type); | |
2b4424c3 | 10112 | set_type_align (union_type, TYPE_RAW_ALIGN (type)); |
c9317f21 TT |
10113 | TYPE_FIELDS (union_type) |
10114 | = (struct field *) TYPE_ZALLOC (union_type, | |
10115 | (TYPE_NFIELDS (union_type) | |
10116 | * sizeof (struct field))); | |
10117 | ||
10118 | memcpy (TYPE_FIELDS (union_type) + 1, TYPE_FIELDS (type), | |
10119 | TYPE_NFIELDS (type) * sizeof (struct field)); | |
10120 | ||
10121 | /* Install the discriminant at index 0 in the union. */ | |
10122 | TYPE_FIELD (union_type, 0) = *disr_field; | |
10123 | TYPE_FIELD_ARTIFICIAL (union_type, 0) = 1; | |
10124 | TYPE_FIELD_NAME (union_type, 0) = "<<discriminant>>"; | |
10125 | ||
10126 | /* Install the union in the outer struct type. */ | |
10127 | TYPE_FIELD_TYPE (type, 0) = union_type; | |
10128 | TYPE_FIELD_NAME (type, 0) = "<<variants>>"; | |
10129 | TYPE_NFIELDS (type) = 1; | |
10130 | ||
10131 | /* Set the size and offset of the union type. */ | |
10132 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), 0); | |
10133 | ||
10134 | /* We need a way to find the correct discriminant given a | |
10135 | variant name. For convenience we build a map here. */ | |
10136 | struct type *enum_type = FIELD_TYPE (*disr_field); | |
10137 | std::unordered_map<std::string, ULONGEST> discriminant_map; | |
10138 | for (int i = 0; i < TYPE_NFIELDS (enum_type); ++i) | |
10139 | { | |
10140 | if (TYPE_FIELD_LOC_KIND (enum_type, i) == FIELD_LOC_KIND_ENUMVAL) | |
10141 | { | |
10142 | const char *name | |
10143 | = rust_last_path_segment (TYPE_FIELD_NAME (enum_type, i)); | |
10144 | discriminant_map[name] = TYPE_FIELD_ENUMVAL (enum_type, i); | |
10145 | } | |
10146 | } | |
10147 | ||
10148 | int n_fields = TYPE_NFIELDS (union_type); | |
10149 | struct discriminant_info *disc | |
10150 | = alloc_discriminant_info (union_type, 0, -1); | |
10151 | /* Skip the discriminant here. */ | |
10152 | for (int i = 1; i < n_fields; ++i) | |
10153 | { | |
10154 | /* Find the final word in the name of this variant's type. | |
10155 | That name can be used to look up the correct | |
10156 | discriminant. */ | |
10157 | const char *variant_name | |
10158 | = rust_last_path_segment (TYPE_NAME (TYPE_FIELD_TYPE (union_type, | |
10159 | i))); | |
10160 | ||
10161 | auto iter = discriminant_map.find (variant_name); | |
10162 | if (iter != discriminant_map.end ()) | |
10163 | disc->discriminants[i] = iter->second; | |
10164 | ||
bedda9ac | 10165 | /* Remove the discriminant field, if it exists. */ |
c9317f21 | 10166 | struct type *sub_type = TYPE_FIELD_TYPE (union_type, i); |
bedda9ac TT |
10167 | if (TYPE_NFIELDS (sub_type) > 0) |
10168 | { | |
10169 | --TYPE_NFIELDS (sub_type); | |
10170 | ++TYPE_FIELDS (sub_type); | |
10171 | } | |
c9317f21 TT |
10172 | TYPE_FIELD_NAME (union_type, i) = variant_name; |
10173 | TYPE_NAME (sub_type) | |
10174 | = rust_fully_qualify (&objfile->objfile_obstack, | |
10175 | TYPE_NAME (type), variant_name); | |
10176 | } | |
10177 | } | |
10178 | } | |
10179 | ||
10180 | /* Rewrite some Rust unions to be structures with variants parts. */ | |
10181 | ||
10182 | static void | |
10183 | rust_union_quirks (struct dwarf2_cu *cu) | |
10184 | { | |
10185 | gdb_assert (cu->language == language_rust); | |
52941706 SM |
10186 | for (type *type_ : cu->rust_unions) |
10187 | quirk_rust_enum (type_, cu->per_cu->dwarf2_per_objfile->objfile); | |
2d79090e TT |
10188 | /* We don't need this any more. */ |
10189 | cu->rust_unions.clear (); | |
c9317f21 TT |
10190 | } |
10191 | ||
95554aad TT |
10192 | /* Return the symtab for PER_CU. This works properly regardless of |
10193 | whether we're using the index or psymtabs. */ | |
10194 | ||
43f3e411 DE |
10195 | static struct compunit_symtab * |
10196 | get_compunit_symtab (struct dwarf2_per_cu_data *per_cu) | |
95554aad | 10197 | { |
ed2dc618 | 10198 | return (per_cu->dwarf2_per_objfile->using_index |
43f3e411 DE |
10199 | ? per_cu->v.quick->compunit_symtab |
10200 | : per_cu->v.psymtab->compunit_symtab); | |
95554aad TT |
10201 | } |
10202 | ||
10203 | /* A helper function for computing the list of all symbol tables | |
10204 | included by PER_CU. */ | |
10205 | ||
10206 | static void | |
4c39bc03 | 10207 | recursively_compute_inclusions (std::vector<compunit_symtab *> *result, |
ec94af83 | 10208 | htab_t all_children, htab_t all_type_symtabs, |
f9125b6c | 10209 | struct dwarf2_per_cu_data *per_cu, |
43f3e411 | 10210 | struct compunit_symtab *immediate_parent) |
95554aad TT |
10211 | { |
10212 | void **slot; | |
10213 | int ix; | |
43f3e411 | 10214 | struct compunit_symtab *cust; |
95554aad TT |
10215 | struct dwarf2_per_cu_data *iter; |
10216 | ||
10217 | slot = htab_find_slot (all_children, per_cu, INSERT); | |
10218 | if (*slot != NULL) | |
10219 | { | |
10220 | /* This inclusion and its children have been processed. */ | |
10221 | return; | |
10222 | } | |
10223 | ||
10224 | *slot = per_cu; | |
10225 | /* Only add a CU if it has a symbol table. */ | |
43f3e411 DE |
10226 | cust = get_compunit_symtab (per_cu); |
10227 | if (cust != NULL) | |
ec94af83 DE |
10228 | { |
10229 | /* If this is a type unit only add its symbol table if we haven't | |
10230 | seen it yet (type unit per_cu's can share symtabs). */ | |
10231 | if (per_cu->is_debug_types) | |
10232 | { | |
43f3e411 | 10233 | slot = htab_find_slot (all_type_symtabs, cust, INSERT); |
ec94af83 DE |
10234 | if (*slot == NULL) |
10235 | { | |
43f3e411 | 10236 | *slot = cust; |
4c39bc03 | 10237 | result->push_back (cust); |
43f3e411 DE |
10238 | if (cust->user == NULL) |
10239 | cust->user = immediate_parent; | |
ec94af83 DE |
10240 | } |
10241 | } | |
10242 | else | |
f9125b6c | 10243 | { |
4c39bc03 | 10244 | result->push_back (cust); |
43f3e411 DE |
10245 | if (cust->user == NULL) |
10246 | cust->user = immediate_parent; | |
f9125b6c | 10247 | } |
ec94af83 | 10248 | } |
95554aad TT |
10249 | |
10250 | for (ix = 0; | |
796a7ff8 | 10251 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, ix, iter); |
95554aad | 10252 | ++ix) |
ec94af83 DE |
10253 | { |
10254 | recursively_compute_inclusions (result, all_children, | |
43f3e411 | 10255 | all_type_symtabs, iter, cust); |
ec94af83 | 10256 | } |
95554aad TT |
10257 | } |
10258 | ||
43f3e411 | 10259 | /* Compute the compunit_symtab 'includes' fields for the compunit_symtab of |
95554aad TT |
10260 | PER_CU. */ |
10261 | ||
10262 | static void | |
43f3e411 | 10263 | compute_compunit_symtab_includes (struct dwarf2_per_cu_data *per_cu) |
95554aad | 10264 | { |
f4dc4d17 DE |
10265 | gdb_assert (! per_cu->is_debug_types); |
10266 | ||
796a7ff8 | 10267 | if (!VEC_empty (dwarf2_per_cu_ptr, per_cu->imported_symtabs)) |
95554aad TT |
10268 | { |
10269 | int ix, len; | |
ec94af83 | 10270 | struct dwarf2_per_cu_data *per_cu_iter; |
4c39bc03 | 10271 | std::vector<compunit_symtab *> result_symtabs; |
ec94af83 | 10272 | htab_t all_children, all_type_symtabs; |
43f3e411 | 10273 | struct compunit_symtab *cust = get_compunit_symtab (per_cu); |
95554aad TT |
10274 | |
10275 | /* If we don't have a symtab, we can just skip this case. */ | |
43f3e411 | 10276 | if (cust == NULL) |
95554aad TT |
10277 | return; |
10278 | ||
10279 | all_children = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, | |
10280 | NULL, xcalloc, xfree); | |
ec94af83 DE |
10281 | all_type_symtabs = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
10282 | NULL, xcalloc, xfree); | |
95554aad TT |
10283 | |
10284 | for (ix = 0; | |
796a7ff8 | 10285 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, |
ec94af83 | 10286 | ix, per_cu_iter); |
95554aad | 10287 | ++ix) |
ec94af83 DE |
10288 | { |
10289 | recursively_compute_inclusions (&result_symtabs, all_children, | |
f9125b6c | 10290 | all_type_symtabs, per_cu_iter, |
43f3e411 | 10291 | cust); |
ec94af83 | 10292 | } |
95554aad | 10293 | |
ec94af83 | 10294 | /* Now we have a transitive closure of all the included symtabs. */ |
4c39bc03 | 10295 | len = result_symtabs.size (); |
43f3e411 | 10296 | cust->includes |
ed2dc618 | 10297 | = XOBNEWVEC (&per_cu->dwarf2_per_objfile->objfile->objfile_obstack, |
8d749320 | 10298 | struct compunit_symtab *, len + 1); |
4c39bc03 TT |
10299 | memcpy (cust->includes, result_symtabs.data (), |
10300 | len * sizeof (compunit_symtab *)); | |
43f3e411 | 10301 | cust->includes[len] = NULL; |
95554aad | 10302 | |
95554aad | 10303 | htab_delete (all_children); |
ec94af83 | 10304 | htab_delete (all_type_symtabs); |
95554aad TT |
10305 | } |
10306 | } | |
10307 | ||
10308 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
10309 | read. */ | |
10310 | ||
10311 | static void | |
ed2dc618 | 10312 | process_cu_includes (struct dwarf2_per_objfile *dwarf2_per_objfile) |
95554aad | 10313 | { |
71b73764 | 10314 | for (dwarf2_per_cu_data *iter : dwarf2_per_objfile->just_read_cus) |
f4dc4d17 DE |
10315 | { |
10316 | if (! iter->is_debug_types) | |
43f3e411 | 10317 | compute_compunit_symtab_includes (iter); |
f4dc4d17 | 10318 | } |
95554aad | 10319 | |
c5d0225d | 10320 | dwarf2_per_objfile->just_read_cus.clear (); |
95554aad TT |
10321 | } |
10322 | ||
9cdd5dbd | 10323 | /* Generate full symbol information for PER_CU, whose DIEs have |
10b3939b DJ |
10324 | already been loaded into memory. */ |
10325 | ||
10326 | static void | |
95554aad TT |
10327 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu, |
10328 | enum language pretend_language) | |
10b3939b | 10329 | { |
10b3939b | 10330 | struct dwarf2_cu *cu = per_cu->cu; |
ed2dc618 SM |
10331 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
10332 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
3e29f34a | 10333 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
10b3939b | 10334 | CORE_ADDR lowpc, highpc; |
43f3e411 | 10335 | struct compunit_symtab *cust; |
10b3939b | 10336 | CORE_ADDR baseaddr; |
4359dff1 | 10337 | struct block *static_block; |
3e29f34a | 10338 | CORE_ADDR addr; |
10b3939b DJ |
10339 | |
10340 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
10341 | ||
c89b44cd TT |
10342 | /* Clear the list here in case something was left over. */ |
10343 | cu->method_list.clear (); | |
10b3939b | 10344 | |
95554aad TT |
10345 | cu->language = pretend_language; |
10346 | cu->language_defn = language_def (cu->language); | |
10347 | ||
c906108c | 10348 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 10349 | process_die (cu->dies, cu); |
c906108c | 10350 | |
a766d390 DE |
10351 | /* For now fudge the Go package. */ |
10352 | if (cu->language == language_go) | |
10353 | fixup_go_packaging (cu); | |
10354 | ||
3da10d80 KS |
10355 | /* Now that we have processed all the DIEs in the CU, all the types |
10356 | should be complete, and it should now be safe to compute all of the | |
10357 | physnames. */ | |
10358 | compute_delayed_physnames (cu); | |
3da10d80 | 10359 | |
c9317f21 TT |
10360 | if (cu->language == language_rust) |
10361 | rust_union_quirks (cu); | |
10362 | ||
fae299cd DC |
10363 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
10364 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
10365 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 10366 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 10367 | |
3e29f34a | 10368 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); |
804d2729 | 10369 | static_block = cu->builder->end_symtab_get_static_block (addr, 0, 1); |
4359dff1 JK |
10370 | |
10371 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
10372 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
10373 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
10374 | addrmap to help ensure it has an accurate map of pc values belonging to | |
10375 | this comp unit. */ | |
10376 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
10377 | ||
804d2729 TT |
10378 | cust = cu->builder->end_symtab_from_static_block (static_block, |
10379 | SECT_OFF_TEXT (objfile), | |
10380 | 0); | |
c906108c | 10381 | |
43f3e411 | 10382 | if (cust != NULL) |
c906108c | 10383 | { |
df15bd07 | 10384 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 10385 | |
8be455d7 JK |
10386 | /* Set symtab language to language from DW_AT_language. If the |
10387 | compilation is from a C file generated by language preprocessors, do | |
10388 | not set the language if it was already deduced by start_subfile. */ | |
43f3e411 | 10389 | if (!(cu->language == language_c |
40e3ad0e | 10390 | && COMPUNIT_FILETABS (cust)->language != language_unknown)) |
43f3e411 | 10391 | COMPUNIT_FILETABS (cust)->language = cu->language; |
8be455d7 JK |
10392 | |
10393 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
10394 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
10395 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
10396 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
10397 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
10398 | |
10399 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
10400 | needed, it would be wrong due to missing DW_AT_producer there. | |
10401 | ||
10402 | Still one can confuse GDB by using non-standard GCC compilation | |
10403 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
10404 | */ | |
ab260dad | 10405 | if (cu->has_loclist && gcc_4_minor >= 5) |
43f3e411 | 10406 | cust->locations_valid = 1; |
e0d00bc7 JK |
10407 | |
10408 | if (gcc_4_minor >= 5) | |
43f3e411 | 10409 | cust->epilogue_unwind_valid = 1; |
96408a79 | 10410 | |
43f3e411 | 10411 | cust->call_site_htab = cu->call_site_htab; |
c906108c | 10412 | } |
9291a0cd TT |
10413 | |
10414 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 10415 | per_cu->v.quick->compunit_symtab = cust; |
9291a0cd TT |
10416 | else |
10417 | { | |
10418 | struct partial_symtab *pst = per_cu->v.psymtab; | |
43f3e411 | 10419 | pst->compunit_symtab = cust; |
9291a0cd TT |
10420 | pst->readin = 1; |
10421 | } | |
c906108c | 10422 | |
95554aad | 10423 | /* Push it for inclusion processing later. */ |
c5d0225d | 10424 | dwarf2_per_objfile->just_read_cus.push_back (per_cu); |
804d2729 TT |
10425 | |
10426 | /* Not needed any more. */ | |
10427 | cu->builder.reset (); | |
f4dc4d17 | 10428 | } |
45cfd468 | 10429 | |
f4dc4d17 DE |
10430 | /* Generate full symbol information for type unit PER_CU, whose DIEs have |
10431 | already been loaded into memory. */ | |
10432 | ||
10433 | static void | |
10434 | process_full_type_unit (struct dwarf2_per_cu_data *per_cu, | |
10435 | enum language pretend_language) | |
10436 | { | |
10437 | struct dwarf2_cu *cu = per_cu->cu; | |
ed2dc618 SM |
10438 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
10439 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
43f3e411 | 10440 | struct compunit_symtab *cust; |
0186c6a7 DE |
10441 | struct signatured_type *sig_type; |
10442 | ||
10443 | gdb_assert (per_cu->is_debug_types); | |
10444 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 | 10445 | |
c89b44cd TT |
10446 | /* Clear the list here in case something was left over. */ |
10447 | cu->method_list.clear (); | |
f4dc4d17 | 10448 | |
f4dc4d17 DE |
10449 | cu->language = pretend_language; |
10450 | cu->language_defn = language_def (cu->language); | |
10451 | ||
10452 | /* The symbol tables are set up in read_type_unit_scope. */ | |
10453 | process_die (cu->dies, cu); | |
10454 | ||
10455 | /* For now fudge the Go package. */ | |
10456 | if (cu->language == language_go) | |
10457 | fixup_go_packaging (cu); | |
10458 | ||
10459 | /* Now that we have processed all the DIEs in the CU, all the types | |
10460 | should be complete, and it should now be safe to compute all of the | |
10461 | physnames. */ | |
10462 | compute_delayed_physnames (cu); | |
f4dc4d17 | 10463 | |
c9317f21 TT |
10464 | if (cu->language == language_rust) |
10465 | rust_union_quirks (cu); | |
10466 | ||
f4dc4d17 DE |
10467 | /* TUs share symbol tables. |
10468 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
10469 | of it with end_expandable_symtab. Otherwise, complete the addition of |
10470 | this TU's symbols to the existing symtab. */ | |
43f3e411 | 10471 | if (sig_type->type_unit_group->compunit_symtab == NULL) |
45cfd468 | 10472 | { |
804d2729 | 10473 | cust = cu->builder->end_expandable_symtab (0, SECT_OFF_TEXT (objfile)); |
43f3e411 | 10474 | sig_type->type_unit_group->compunit_symtab = cust; |
f4dc4d17 | 10475 | |
43f3e411 | 10476 | if (cust != NULL) |
f4dc4d17 DE |
10477 | { |
10478 | /* Set symtab language to language from DW_AT_language. If the | |
10479 | compilation is from a C file generated by language preprocessors, | |
10480 | do not set the language if it was already deduced by | |
10481 | start_subfile. */ | |
43f3e411 DE |
10482 | if (!(cu->language == language_c |
10483 | && COMPUNIT_FILETABS (cust)->language != language_c)) | |
10484 | COMPUNIT_FILETABS (cust)->language = cu->language; | |
f4dc4d17 DE |
10485 | } |
10486 | } | |
10487 | else | |
10488 | { | |
804d2729 | 10489 | cu->builder->augment_type_symtab (); |
43f3e411 | 10490 | cust = sig_type->type_unit_group->compunit_symtab; |
f4dc4d17 DE |
10491 | } |
10492 | ||
10493 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 10494 | per_cu->v.quick->compunit_symtab = cust; |
f4dc4d17 DE |
10495 | else |
10496 | { | |
10497 | struct partial_symtab *pst = per_cu->v.psymtab; | |
43f3e411 | 10498 | pst->compunit_symtab = cust; |
f4dc4d17 | 10499 | pst->readin = 1; |
45cfd468 | 10500 | } |
804d2729 TT |
10501 | |
10502 | /* Not needed any more. */ | |
10503 | cu->builder.reset (); | |
c906108c SS |
10504 | } |
10505 | ||
95554aad TT |
10506 | /* Process an imported unit DIE. */ |
10507 | ||
10508 | static void | |
10509 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
10510 | { | |
10511 | struct attribute *attr; | |
10512 | ||
f4dc4d17 DE |
10513 | /* For now we don't handle imported units in type units. */ |
10514 | if (cu->per_cu->is_debug_types) | |
10515 | { | |
10516 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
10517 | " supported in type units [in module %s]"), | |
518817b3 | 10518 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
f4dc4d17 DE |
10519 | } |
10520 | ||
95554aad TT |
10521 | attr = dwarf2_attr (die, DW_AT_import, cu); |
10522 | if (attr != NULL) | |
10523 | { | |
9c541725 PA |
10524 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
10525 | bool is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); | |
10526 | dwarf2_per_cu_data *per_cu | |
e3b94546 | 10527 | = dwarf2_find_containing_comp_unit (sect_off, is_dwz, |
518817b3 | 10528 | cu->per_cu->dwarf2_per_objfile); |
95554aad | 10529 | |
69d751e3 | 10530 | /* If necessary, add it to the queue and load its DIEs. */ |
95554aad | 10531 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
58f0c718 | 10532 | load_full_comp_unit (per_cu, false, cu->language); |
95554aad | 10533 | |
796a7ff8 | 10534 | VEC_safe_push (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, |
95554aad TT |
10535 | per_cu); |
10536 | } | |
10537 | } | |
10538 | ||
4c8aa72d PA |
10539 | /* RAII object that represents a process_die scope: i.e., |
10540 | starts/finishes processing a DIE. */ | |
10541 | class process_die_scope | |
adde2bff | 10542 | { |
4c8aa72d PA |
10543 | public: |
10544 | process_die_scope (die_info *die, dwarf2_cu *cu) | |
10545 | : m_die (die), m_cu (cu) | |
10546 | { | |
10547 | /* We should only be processing DIEs not already in process. */ | |
10548 | gdb_assert (!m_die->in_process); | |
10549 | m_die->in_process = true; | |
10550 | } | |
8c3cb9fa | 10551 | |
4c8aa72d PA |
10552 | ~process_die_scope () |
10553 | { | |
10554 | m_die->in_process = false; | |
10555 | ||
10556 | /* If we're done processing the DIE for the CU that owns the line | |
10557 | header, we don't need the line header anymore. */ | |
10558 | if (m_cu->line_header_die_owner == m_die) | |
10559 | { | |
10560 | delete m_cu->line_header; | |
10561 | m_cu->line_header = NULL; | |
10562 | m_cu->line_header_die_owner = NULL; | |
10563 | } | |
10564 | } | |
10565 | ||
10566 | private: | |
10567 | die_info *m_die; | |
10568 | dwarf2_cu *m_cu; | |
10569 | }; | |
adde2bff | 10570 | |
c906108c SS |
10571 | /* Process a die and its children. */ |
10572 | ||
10573 | static void | |
e7c27a73 | 10574 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10575 | { |
4c8aa72d | 10576 | process_die_scope scope (die, cu); |
adde2bff | 10577 | |
c906108c SS |
10578 | switch (die->tag) |
10579 | { | |
10580 | case DW_TAG_padding: | |
10581 | break; | |
10582 | case DW_TAG_compile_unit: | |
95554aad | 10583 | case DW_TAG_partial_unit: |
e7c27a73 | 10584 | read_file_scope (die, cu); |
c906108c | 10585 | break; |
348e048f DE |
10586 | case DW_TAG_type_unit: |
10587 | read_type_unit_scope (die, cu); | |
10588 | break; | |
c906108c | 10589 | case DW_TAG_subprogram: |
c906108c | 10590 | case DW_TAG_inlined_subroutine: |
edb3359d | 10591 | read_func_scope (die, cu); |
c906108c SS |
10592 | break; |
10593 | case DW_TAG_lexical_block: | |
14898363 L |
10594 | case DW_TAG_try_block: |
10595 | case DW_TAG_catch_block: | |
e7c27a73 | 10596 | read_lexical_block_scope (die, cu); |
c906108c | 10597 | break; |
216f72a1 | 10598 | case DW_TAG_call_site: |
96408a79 SA |
10599 | case DW_TAG_GNU_call_site: |
10600 | read_call_site_scope (die, cu); | |
10601 | break; | |
c906108c | 10602 | case DW_TAG_class_type: |
680b30c7 | 10603 | case DW_TAG_interface_type: |
c906108c SS |
10604 | case DW_TAG_structure_type: |
10605 | case DW_TAG_union_type: | |
134d01f1 | 10606 | process_structure_scope (die, cu); |
c906108c SS |
10607 | break; |
10608 | case DW_TAG_enumeration_type: | |
134d01f1 | 10609 | process_enumeration_scope (die, cu); |
c906108c | 10610 | break; |
134d01f1 | 10611 | |
f792889a DJ |
10612 | /* These dies have a type, but processing them does not create |
10613 | a symbol or recurse to process the children. Therefore we can | |
10614 | read them on-demand through read_type_die. */ | |
c906108c | 10615 | case DW_TAG_subroutine_type: |
72019c9c | 10616 | case DW_TAG_set_type: |
c906108c | 10617 | case DW_TAG_array_type: |
c906108c | 10618 | case DW_TAG_pointer_type: |
c906108c | 10619 | case DW_TAG_ptr_to_member_type: |
c906108c | 10620 | case DW_TAG_reference_type: |
4297a3f0 | 10621 | case DW_TAG_rvalue_reference_type: |
c906108c | 10622 | case DW_TAG_string_type: |
c906108c | 10623 | break; |
134d01f1 | 10624 | |
c906108c | 10625 | case DW_TAG_base_type: |
a02abb62 | 10626 | case DW_TAG_subrange_type: |
cb249c71 | 10627 | case DW_TAG_typedef: |
134d01f1 DJ |
10628 | /* Add a typedef symbol for the type definition, if it has a |
10629 | DW_AT_name. */ | |
f792889a | 10630 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 10631 | break; |
c906108c | 10632 | case DW_TAG_common_block: |
e7c27a73 | 10633 | read_common_block (die, cu); |
c906108c SS |
10634 | break; |
10635 | case DW_TAG_common_inclusion: | |
10636 | break; | |
d9fa45fe | 10637 | case DW_TAG_namespace: |
9068261f | 10638 | cu->processing_has_namespace_info = true; |
e7c27a73 | 10639 | read_namespace (die, cu); |
d9fa45fe | 10640 | break; |
5d7cb8df | 10641 | case DW_TAG_module: |
9068261f | 10642 | cu->processing_has_namespace_info = true; |
5d7cb8df JK |
10643 | read_module (die, cu); |
10644 | break; | |
d9fa45fe | 10645 | case DW_TAG_imported_declaration: |
9068261f | 10646 | cu->processing_has_namespace_info = true; |
74921315 KS |
10647 | if (read_namespace_alias (die, cu)) |
10648 | break; | |
86a73007 TT |
10649 | /* The declaration is not a global namespace alias. */ |
10650 | /* Fall through. */ | |
d9fa45fe | 10651 | case DW_TAG_imported_module: |
9068261f | 10652 | cu->processing_has_namespace_info = true; |
27aa8d6a SW |
10653 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
10654 | || cu->language != language_fortran)) | |
b98664d3 | 10655 | complaint (_("Tag '%s' has unexpected children"), |
27aa8d6a SW |
10656 | dwarf_tag_name (die->tag)); |
10657 | read_import_statement (die, cu); | |
d9fa45fe | 10658 | break; |
95554aad TT |
10659 | |
10660 | case DW_TAG_imported_unit: | |
10661 | process_imported_unit_die (die, cu); | |
10662 | break; | |
10663 | ||
71a3c369 TT |
10664 | case DW_TAG_variable: |
10665 | read_variable (die, cu); | |
10666 | break; | |
10667 | ||
c906108c | 10668 | default: |
e7c27a73 | 10669 | new_symbol (die, NULL, cu); |
c906108c SS |
10670 | break; |
10671 | } | |
10672 | } | |
ca69b9e6 DE |
10673 | \f |
10674 | /* DWARF name computation. */ | |
c906108c | 10675 | |
94af9270 KS |
10676 | /* A helper function for dwarf2_compute_name which determines whether DIE |
10677 | needs to have the name of the scope prepended to the name listed in the | |
10678 | die. */ | |
10679 | ||
10680 | static int | |
10681 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
10682 | { | |
1c809c68 TT |
10683 | struct attribute *attr; |
10684 | ||
94af9270 KS |
10685 | switch (die->tag) |
10686 | { | |
10687 | case DW_TAG_namespace: | |
10688 | case DW_TAG_typedef: | |
10689 | case DW_TAG_class_type: | |
10690 | case DW_TAG_interface_type: | |
10691 | case DW_TAG_structure_type: | |
10692 | case DW_TAG_union_type: | |
10693 | case DW_TAG_enumeration_type: | |
10694 | case DW_TAG_enumerator: | |
10695 | case DW_TAG_subprogram: | |
08a76f8a | 10696 | case DW_TAG_inlined_subroutine: |
94af9270 | 10697 | case DW_TAG_member: |
74921315 | 10698 | case DW_TAG_imported_declaration: |
94af9270 KS |
10699 | return 1; |
10700 | ||
10701 | case DW_TAG_variable: | |
c2b0a229 | 10702 | case DW_TAG_constant: |
94af9270 KS |
10703 | /* We only need to prefix "globally" visible variables. These include |
10704 | any variable marked with DW_AT_external or any variable that | |
10705 | lives in a namespace. [Variables in anonymous namespaces | |
10706 | require prefixing, but they are not DW_AT_external.] */ | |
10707 | ||
10708 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
10709 | { | |
10710 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 10711 | |
94af9270 KS |
10712 | return die_needs_namespace (die_specification (die, &spec_cu), |
10713 | spec_cu); | |
10714 | } | |
10715 | ||
1c809c68 | 10716 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
10717 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
10718 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
10719 | return 0; |
10720 | /* A variable in a lexical block of some kind does not need a | |
10721 | namespace, even though in C++ such variables may be external | |
10722 | and have a mangled name. */ | |
10723 | if (die->parent->tag == DW_TAG_lexical_block | |
10724 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
10725 | || die->parent->tag == DW_TAG_catch_block |
10726 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
10727 | return 0; |
10728 | return 1; | |
94af9270 KS |
10729 | |
10730 | default: | |
10731 | return 0; | |
10732 | } | |
10733 | } | |
10734 | ||
73b9be8b KS |
10735 | /* Return the DIE's linkage name attribute, either DW_AT_linkage_name |
10736 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10737 | defined for the given DIE. */ | |
10738 | ||
10739 | static struct attribute * | |
10740 | dw2_linkage_name_attr (struct die_info *die, struct dwarf2_cu *cu) | |
10741 | { | |
10742 | struct attribute *attr; | |
10743 | ||
10744 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
10745 | if (attr == NULL) | |
10746 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10747 | ||
10748 | return attr; | |
10749 | } | |
10750 | ||
10751 | /* Return the DIE's linkage name as a string, either DW_AT_linkage_name | |
10752 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10753 | defined for the given DIE. */ | |
10754 | ||
10755 | static const char * | |
10756 | dw2_linkage_name (struct die_info *die, struct dwarf2_cu *cu) | |
10757 | { | |
10758 | const char *linkage_name; | |
10759 | ||
10760 | linkage_name = dwarf2_string_attr (die, DW_AT_linkage_name, cu); | |
10761 | if (linkage_name == NULL) | |
10762 | linkage_name = dwarf2_string_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10763 | ||
10764 | return linkage_name; | |
10765 | } | |
10766 | ||
94af9270 | 10767 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 | 10768 | compute the physname for the object, which include a method's: |
9c37b5ae | 10769 | - formal parameters (C++), |
a766d390 | 10770 | - receiver type (Go), |
a766d390 DE |
10771 | |
10772 | The term "physname" is a bit confusing. | |
10773 | For C++, for example, it is the demangled name. | |
10774 | For Go, for example, it's the mangled name. | |
94af9270 | 10775 | |
af6b7be1 JB |
10776 | For Ada, return the DIE's linkage name rather than the fully qualified |
10777 | name. PHYSNAME is ignored.. | |
10778 | ||
94af9270 KS |
10779 | The result is allocated on the objfile_obstack and canonicalized. */ |
10780 | ||
10781 | static const char * | |
15d034d0 TT |
10782 | dwarf2_compute_name (const char *name, |
10783 | struct die_info *die, struct dwarf2_cu *cu, | |
94af9270 KS |
10784 | int physname) |
10785 | { | |
518817b3 | 10786 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
bb5ed363 | 10787 | |
94af9270 KS |
10788 | if (name == NULL) |
10789 | name = dwarf2_name (die, cu); | |
10790 | ||
2ee7123e DE |
10791 | /* For Fortran GDB prefers DW_AT_*linkage_name for the physname if present |
10792 | but otherwise compute it by typename_concat inside GDB. | |
10793 | FIXME: Actually this is not really true, or at least not always true. | |
10794 | It's all very confusing. SYMBOL_SET_NAMES doesn't try to demangle | |
5e2db402 | 10795 | Fortran names because there is no mangling standard. So new_symbol |
2ee7123e DE |
10796 | will set the demangled name to the result of dwarf2_full_name, and it is |
10797 | the demangled name that GDB uses if it exists. */ | |
f55ee35c JK |
10798 | if (cu->language == language_ada |
10799 | || (cu->language == language_fortran && physname)) | |
10800 | { | |
10801 | /* For Ada unit, we prefer the linkage name over the name, as | |
10802 | the former contains the exported name, which the user expects | |
10803 | to be able to reference. Ideally, we want the user to be able | |
10804 | to reference this entity using either natural or linkage name, | |
10805 | but we haven't started looking at this enhancement yet. */ | |
73b9be8b | 10806 | const char *linkage_name = dw2_linkage_name (die, cu); |
f55ee35c | 10807 | |
2ee7123e DE |
10808 | if (linkage_name != NULL) |
10809 | return linkage_name; | |
f55ee35c JK |
10810 | } |
10811 | ||
94af9270 KS |
10812 | /* These are the only languages we know how to qualify names in. */ |
10813 | if (name != NULL | |
9c37b5ae | 10814 | && (cu->language == language_cplus |
c44af4eb TT |
10815 | || cu->language == language_fortran || cu->language == language_d |
10816 | || cu->language == language_rust)) | |
94af9270 KS |
10817 | { |
10818 | if (die_needs_namespace (die, cu)) | |
10819 | { | |
0d5cff50 | 10820 | const char *prefix; |
34a68019 | 10821 | const char *canonical_name = NULL; |
94af9270 | 10822 | |
d7e74731 PA |
10823 | string_file buf; |
10824 | ||
94af9270 | 10825 | prefix = determine_prefix (die, cu); |
94af9270 KS |
10826 | if (*prefix != '\0') |
10827 | { | |
f55ee35c JK |
10828 | char *prefixed_name = typename_concat (NULL, prefix, name, |
10829 | physname, cu); | |
9a619af0 | 10830 | |
d7e74731 | 10831 | buf.puts (prefixed_name); |
94af9270 KS |
10832 | xfree (prefixed_name); |
10833 | } | |
10834 | else | |
d7e74731 | 10835 | buf.puts (name); |
94af9270 | 10836 | |
98bfdba5 PA |
10837 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
10838 | as children with DW_TAG_template_type_param or | |
10839 | DW_TAG_value_type_param. If the latter, add them to the name | |
10840 | here. If the name already has template parameters, then | |
10841 | skip this step; some versions of GCC emit both, and | |
10842 | it is more efficient to use the pre-computed name. | |
10843 | ||
10844 | Something to keep in mind about this process: it is very | |
10845 | unlikely, or in some cases downright impossible, to produce | |
10846 | something that will match the mangled name of a function. | |
10847 | If the definition of the function has the same debug info, | |
10848 | we should be able to match up with it anyway. But fallbacks | |
10849 | using the minimal symbol, for instance to find a method | |
10850 | implemented in a stripped copy of libstdc++, will not work. | |
10851 | If we do not have debug info for the definition, we will have to | |
10852 | match them up some other way. | |
10853 | ||
10854 | When we do name matching there is a related problem with function | |
10855 | templates; two instantiated function templates are allowed to | |
10856 | differ only by their return types, which we do not add here. */ | |
10857 | ||
10858 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
10859 | { | |
10860 | struct attribute *attr; | |
10861 | struct die_info *child; | |
10862 | int first = 1; | |
10863 | ||
10864 | die->building_fullname = 1; | |
10865 | ||
10866 | for (child = die->child; child != NULL; child = child->sibling) | |
10867 | { | |
10868 | struct type *type; | |
12df843f | 10869 | LONGEST value; |
d521ce57 | 10870 | const gdb_byte *bytes; |
98bfdba5 PA |
10871 | struct dwarf2_locexpr_baton *baton; |
10872 | struct value *v; | |
10873 | ||
10874 | if (child->tag != DW_TAG_template_type_param | |
10875 | && child->tag != DW_TAG_template_value_param) | |
10876 | continue; | |
10877 | ||
10878 | if (first) | |
10879 | { | |
d7e74731 | 10880 | buf.puts ("<"); |
98bfdba5 PA |
10881 | first = 0; |
10882 | } | |
10883 | else | |
d7e74731 | 10884 | buf.puts (", "); |
98bfdba5 PA |
10885 | |
10886 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
10887 | if (attr == NULL) | |
10888 | { | |
b98664d3 | 10889 | complaint (_("template parameter missing DW_AT_type")); |
d7e74731 | 10890 | buf.puts ("UNKNOWN_TYPE"); |
98bfdba5 PA |
10891 | continue; |
10892 | } | |
10893 | type = die_type (child, cu); | |
10894 | ||
10895 | if (child->tag == DW_TAG_template_type_param) | |
10896 | { | |
c1ec8cea TT |
10897 | c_print_type (type, "", &buf, -1, 0, cu->language, |
10898 | &type_print_raw_options); | |
98bfdba5 PA |
10899 | continue; |
10900 | } | |
10901 | ||
10902 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
10903 | if (attr == NULL) | |
10904 | { | |
b98664d3 | 10905 | complaint (_("template parameter missing " |
3e43a32a | 10906 | "DW_AT_const_value")); |
d7e74731 | 10907 | buf.puts ("UNKNOWN_VALUE"); |
98bfdba5 PA |
10908 | continue; |
10909 | } | |
10910 | ||
10911 | dwarf2_const_value_attr (attr, type, name, | |
10912 | &cu->comp_unit_obstack, cu, | |
10913 | &value, &bytes, &baton); | |
10914 | ||
10915 | if (TYPE_NOSIGN (type)) | |
10916 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
10917 | changed, this can use value_print instead. */ | |
d7e74731 | 10918 | c_printchar (value, type, &buf); |
98bfdba5 PA |
10919 | else |
10920 | { | |
10921 | struct value_print_options opts; | |
10922 | ||
10923 | if (baton != NULL) | |
10924 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
10925 | baton->data, | |
10926 | baton->size, | |
10927 | baton->per_cu); | |
10928 | else if (bytes != NULL) | |
10929 | { | |
10930 | v = allocate_value (type); | |
10931 | memcpy (value_contents_writeable (v), bytes, | |
10932 | TYPE_LENGTH (type)); | |
10933 | } | |
10934 | else | |
10935 | v = value_from_longest (type, value); | |
10936 | ||
3e43a32a MS |
10937 | /* Specify decimal so that we do not depend on |
10938 | the radix. */ | |
98bfdba5 PA |
10939 | get_formatted_print_options (&opts, 'd'); |
10940 | opts.raw = 1; | |
d7e74731 | 10941 | value_print (v, &buf, &opts); |
98bfdba5 | 10942 | release_value (v); |
98bfdba5 PA |
10943 | } |
10944 | } | |
10945 | ||
10946 | die->building_fullname = 0; | |
10947 | ||
10948 | if (!first) | |
10949 | { | |
10950 | /* Close the argument list, with a space if necessary | |
10951 | (nested templates). */ | |
d7e74731 PA |
10952 | if (!buf.empty () && buf.string ().back () == '>') |
10953 | buf.puts (" >"); | |
98bfdba5 | 10954 | else |
d7e74731 | 10955 | buf.puts (">"); |
98bfdba5 PA |
10956 | } |
10957 | } | |
10958 | ||
9c37b5ae | 10959 | /* For C++ methods, append formal parameter type |
94af9270 | 10960 | information, if PHYSNAME. */ |
6e70227d | 10961 | |
94af9270 | 10962 | if (physname && die->tag == DW_TAG_subprogram |
9c37b5ae | 10963 | && cu->language == language_cplus) |
94af9270 KS |
10964 | { |
10965 | struct type *type = read_type_die (die, cu); | |
10966 | ||
d7e74731 | 10967 | c_type_print_args (type, &buf, 1, cu->language, |
79d43c61 | 10968 | &type_print_raw_options); |
94af9270 | 10969 | |
9c37b5ae | 10970 | if (cu->language == language_cplus) |
94af9270 | 10971 | { |
60430eff DJ |
10972 | /* Assume that an artificial first parameter is |
10973 | "this", but do not crash if it is not. RealView | |
10974 | marks unnamed (and thus unused) parameters as | |
10975 | artificial; there is no way to differentiate | |
10976 | the two cases. */ | |
94af9270 KS |
10977 | if (TYPE_NFIELDS (type) > 0 |
10978 | && TYPE_FIELD_ARTIFICIAL (type, 0) | |
60430eff | 10979 | && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_PTR |
3e43a32a MS |
10980 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, |
10981 | 0)))) | |
d7e74731 | 10982 | buf.puts (" const"); |
94af9270 KS |
10983 | } |
10984 | } | |
10985 | ||
d7e74731 | 10986 | const std::string &intermediate_name = buf.string (); |
94af9270 KS |
10987 | |
10988 | if (cu->language == language_cplus) | |
34a68019 | 10989 | canonical_name |
322a8516 | 10990 | = dwarf2_canonicalize_name (intermediate_name.c_str (), cu, |
34a68019 TT |
10991 | &objfile->per_bfd->storage_obstack); |
10992 | ||
10993 | /* If we only computed INTERMEDIATE_NAME, or if | |
10994 | INTERMEDIATE_NAME is already canonical, then we need to | |
10995 | copy it to the appropriate obstack. */ | |
322a8516 | 10996 | if (canonical_name == NULL || canonical_name == intermediate_name.c_str ()) |
224c3ddb SM |
10997 | name = ((const char *) |
10998 | obstack_copy0 (&objfile->per_bfd->storage_obstack, | |
322a8516 PA |
10999 | intermediate_name.c_str (), |
11000 | intermediate_name.length ())); | |
34a68019 TT |
11001 | else |
11002 | name = canonical_name; | |
94af9270 KS |
11003 | } |
11004 | } | |
11005 | ||
11006 | return name; | |
11007 | } | |
11008 | ||
0114d602 DJ |
11009 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
11010 | If scope qualifiers are appropriate they will be added. The result | |
34a68019 | 11011 | will be allocated on the storage_obstack, or NULL if the DIE does |
94af9270 KS |
11012 | not have a name. NAME may either be from a previous call to |
11013 | dwarf2_name or NULL. | |
11014 | ||
9c37b5ae | 11015 | The output string will be canonicalized (if C++). */ |
0114d602 DJ |
11016 | |
11017 | static const char * | |
15d034d0 | 11018 | dwarf2_full_name (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 11019 | { |
94af9270 KS |
11020 | return dwarf2_compute_name (name, die, cu, 0); |
11021 | } | |
0114d602 | 11022 | |
94af9270 KS |
11023 | /* Construct a physname for the given DIE in CU. NAME may either be |
11024 | from a previous call to dwarf2_name or NULL. The result will be | |
11025 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
11026 | name. | |
0114d602 | 11027 | |
9c37b5ae | 11028 | The output string will be canonicalized (if C++). */ |
0114d602 | 11029 | |
94af9270 | 11030 | static const char * |
15d034d0 | 11031 | dwarf2_physname (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
94af9270 | 11032 | { |
518817b3 | 11033 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
900e11f9 | 11034 | const char *retval, *mangled = NULL, *canon = NULL; |
900e11f9 JK |
11035 | int need_copy = 1; |
11036 | ||
11037 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
11038 | on its own. */ | |
11039 | if (!die_needs_namespace (die, cu)) | |
11040 | return dwarf2_compute_name (name, die, cu, 1); | |
11041 | ||
73b9be8b | 11042 | mangled = dw2_linkage_name (die, cu); |
900e11f9 | 11043 | |
e98c9e7c TT |
11044 | /* rustc emits invalid values for DW_AT_linkage_name. Ignore these. |
11045 | See https://github.com/rust-lang/rust/issues/32925. */ | |
11046 | if (cu->language == language_rust && mangled != NULL | |
11047 | && strchr (mangled, '{') != NULL) | |
11048 | mangled = NULL; | |
11049 | ||
900e11f9 JK |
11050 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB |
11051 | has computed. */ | |
791afaa2 | 11052 | gdb::unique_xmalloc_ptr<char> demangled; |
7d45c7c3 | 11053 | if (mangled != NULL) |
900e11f9 | 11054 | { |
900e11f9 | 11055 | |
59cc4834 JB |
11056 | if (language_def (cu->language)->la_store_sym_names_in_linkage_form_p) |
11057 | { | |
11058 | /* Do nothing (do not demangle the symbol name). */ | |
11059 | } | |
11060 | else if (cu->language == language_go) | |
a766d390 | 11061 | { |
5e2db402 TT |
11062 | /* This is a lie, but we already lie to the caller new_symbol. |
11063 | new_symbol assumes we return the mangled name. | |
a766d390 | 11064 | This just undoes that lie until things are cleaned up. */ |
a766d390 DE |
11065 | } |
11066 | else | |
11067 | { | |
0eb876f5 JB |
11068 | /* Use DMGL_RET_DROP for C++ template functions to suppress |
11069 | their return type. It is easier for GDB users to search | |
11070 | for such functions as `name(params)' than `long name(params)'. | |
11071 | In such case the minimal symbol names do not match the full | |
11072 | symbol names but for template functions there is never a need | |
11073 | to look up their definition from their declaration so | |
11074 | the only disadvantage remains the minimal symbol variant | |
11075 | `long name(params)' does not have the proper inferior type. */ | |
791afaa2 TT |
11076 | demangled.reset (gdb_demangle (mangled, |
11077 | (DMGL_PARAMS | DMGL_ANSI | |
11078 | | DMGL_RET_DROP))); | |
a766d390 | 11079 | } |
900e11f9 | 11080 | if (demangled) |
791afaa2 | 11081 | canon = demangled.get (); |
900e11f9 JK |
11082 | else |
11083 | { | |
11084 | canon = mangled; | |
11085 | need_copy = 0; | |
11086 | } | |
11087 | } | |
11088 | ||
11089 | if (canon == NULL || check_physname) | |
11090 | { | |
11091 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
11092 | ||
11093 | if (canon != NULL && strcmp (physname, canon) != 0) | |
11094 | { | |
11095 | /* It may not mean a bug in GDB. The compiler could also | |
11096 | compute DW_AT_linkage_name incorrectly. But in such case | |
11097 | GDB would need to be bug-to-bug compatible. */ | |
11098 | ||
b98664d3 | 11099 | complaint (_("Computed physname <%s> does not match demangled <%s> " |
9d8780f0 SM |
11100 | "(from linkage <%s>) - DIE at %s [in module %s]"), |
11101 | physname, canon, mangled, sect_offset_str (die->sect_off), | |
4262abfb | 11102 | objfile_name (objfile)); |
900e11f9 JK |
11103 | |
11104 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
11105 | is available here - over computed PHYSNAME. It is safer | |
11106 | against both buggy GDB and buggy compilers. */ | |
11107 | ||
11108 | retval = canon; | |
11109 | } | |
11110 | else | |
11111 | { | |
11112 | retval = physname; | |
11113 | need_copy = 0; | |
11114 | } | |
11115 | } | |
11116 | else | |
11117 | retval = canon; | |
11118 | ||
11119 | if (need_copy) | |
224c3ddb SM |
11120 | retval = ((const char *) |
11121 | obstack_copy0 (&objfile->per_bfd->storage_obstack, | |
11122 | retval, strlen (retval))); | |
900e11f9 | 11123 | |
900e11f9 | 11124 | return retval; |
0114d602 DJ |
11125 | } |
11126 | ||
74921315 KS |
11127 | /* Inspect DIE in CU for a namespace alias. If one exists, record |
11128 | a new symbol for it. | |
11129 | ||
11130 | Returns 1 if a namespace alias was recorded, 0 otherwise. */ | |
11131 | ||
11132 | static int | |
11133 | read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu) | |
11134 | { | |
11135 | struct attribute *attr; | |
11136 | ||
11137 | /* If the die does not have a name, this is not a namespace | |
11138 | alias. */ | |
11139 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
11140 | if (attr != NULL) | |
11141 | { | |
11142 | int num; | |
11143 | struct die_info *d = die; | |
11144 | struct dwarf2_cu *imported_cu = cu; | |
11145 | ||
11146 | /* If the compiler has nested DW_AT_imported_declaration DIEs, | |
11147 | keep inspecting DIEs until we hit the underlying import. */ | |
11148 | #define MAX_NESTED_IMPORTED_DECLARATIONS 100 | |
11149 | for (num = 0; num < MAX_NESTED_IMPORTED_DECLARATIONS; ++num) | |
11150 | { | |
11151 | attr = dwarf2_attr (d, DW_AT_import, cu); | |
11152 | if (attr == NULL) | |
11153 | break; | |
11154 | ||
11155 | d = follow_die_ref (d, attr, &imported_cu); | |
11156 | if (d->tag != DW_TAG_imported_declaration) | |
11157 | break; | |
11158 | } | |
11159 | ||
11160 | if (num == MAX_NESTED_IMPORTED_DECLARATIONS) | |
11161 | { | |
b98664d3 | 11162 | complaint (_("DIE at %s has too many recursively imported " |
9d8780f0 | 11163 | "declarations"), sect_offset_str (d->sect_off)); |
74921315 KS |
11164 | return 0; |
11165 | } | |
11166 | ||
11167 | if (attr != NULL) | |
11168 | { | |
11169 | struct type *type; | |
9c541725 | 11170 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
74921315 | 11171 | |
9c541725 | 11172 | type = get_die_type_at_offset (sect_off, cu->per_cu); |
74921315 KS |
11173 | if (type != NULL && TYPE_CODE (type) == TYPE_CODE_NAMESPACE) |
11174 | { | |
11175 | /* This declaration is a global namespace alias. Add | |
11176 | a symbol for it whose type is the aliased namespace. */ | |
11177 | new_symbol (die, type, cu); | |
11178 | return 1; | |
11179 | } | |
11180 | } | |
11181 | } | |
11182 | ||
11183 | return 0; | |
11184 | } | |
11185 | ||
22cee43f | 11186 | /* Return the using directives repository (global or local?) to use in the |
804d2729 | 11187 | current context for CU. |
22cee43f PMR |
11188 | |
11189 | For Ada, imported declarations can materialize renamings, which *may* be | |
11190 | global. However it is impossible (for now?) in DWARF to distinguish | |
11191 | "external" imported declarations and "static" ones. As all imported | |
11192 | declarations seem to be static in all other languages, make them all CU-wide | |
11193 | global only in Ada. */ | |
11194 | ||
11195 | static struct using_direct ** | |
804d2729 | 11196 | using_directives (struct dwarf2_cu *cu) |
22cee43f | 11197 | { |
804d2729 TT |
11198 | if (cu->language == language_ada && cu->builder->outermost_context_p ()) |
11199 | return cu->builder->get_global_using_directives (); | |
22cee43f | 11200 | else |
804d2729 | 11201 | return cu->builder->get_local_using_directives (); |
22cee43f PMR |
11202 | } |
11203 | ||
27aa8d6a SW |
11204 | /* Read the import statement specified by the given die and record it. */ |
11205 | ||
11206 | static void | |
11207 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
11208 | { | |
518817b3 | 11209 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
27aa8d6a | 11210 | struct attribute *import_attr; |
32019081 | 11211 | struct die_info *imported_die, *child_die; |
de4affc9 | 11212 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 11213 | const char *imported_name; |
794684b6 | 11214 | const char *imported_name_prefix; |
13387711 SW |
11215 | const char *canonical_name; |
11216 | const char *import_alias; | |
11217 | const char *imported_declaration = NULL; | |
794684b6 | 11218 | const char *import_prefix; |
eb1e02fd | 11219 | std::vector<const char *> excludes; |
13387711 | 11220 | |
27aa8d6a SW |
11221 | import_attr = dwarf2_attr (die, DW_AT_import, cu); |
11222 | if (import_attr == NULL) | |
11223 | { | |
b98664d3 | 11224 | complaint (_("Tag '%s' has no DW_AT_import"), |
27aa8d6a SW |
11225 | dwarf_tag_name (die->tag)); |
11226 | return; | |
11227 | } | |
11228 | ||
de4affc9 CC |
11229 | imported_cu = cu; |
11230 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
11231 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
11232 | if (imported_name == NULL) |
11233 | { | |
11234 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
11235 | ||
11236 | The import in the following code: | |
11237 | namespace A | |
11238 | { | |
11239 | typedef int B; | |
11240 | } | |
11241 | ||
11242 | int main () | |
11243 | { | |
11244 | using A::B; | |
11245 | B b; | |
11246 | return b; | |
11247 | } | |
11248 | ||
11249 | ... | |
11250 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
11251 | <52> DW_AT_decl_file : 1 | |
11252 | <53> DW_AT_decl_line : 6 | |
11253 | <54> DW_AT_import : <0x75> | |
11254 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
11255 | <59> DW_AT_name : B | |
11256 | <5b> DW_AT_decl_file : 1 | |
11257 | <5c> DW_AT_decl_line : 2 | |
11258 | <5d> DW_AT_type : <0x6e> | |
11259 | ... | |
11260 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
11261 | <76> DW_AT_byte_size : 4 | |
11262 | <77> DW_AT_encoding : 5 (signed) | |
11263 | ||
11264 | imports the wrong die ( 0x75 instead of 0x58 ). | |
11265 | This case will be ignored until the gcc bug is fixed. */ | |
11266 | return; | |
11267 | } | |
11268 | ||
82856980 SW |
11269 | /* Figure out the local name after import. */ |
11270 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 11271 | |
794684b6 SW |
11272 | /* Figure out where the statement is being imported to. */ |
11273 | import_prefix = determine_prefix (die, cu); | |
11274 | ||
11275 | /* Figure out what the scope of the imported die is and prepend it | |
11276 | to the name of the imported die. */ | |
de4affc9 | 11277 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 11278 | |
f55ee35c JK |
11279 | if (imported_die->tag != DW_TAG_namespace |
11280 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 11281 | { |
13387711 SW |
11282 | imported_declaration = imported_name; |
11283 | canonical_name = imported_name_prefix; | |
794684b6 | 11284 | } |
13387711 | 11285 | else if (strlen (imported_name_prefix) > 0) |
12aaed36 | 11286 | canonical_name = obconcat (&objfile->objfile_obstack, |
45280282 IB |
11287 | imported_name_prefix, |
11288 | (cu->language == language_d ? "." : "::"), | |
11289 | imported_name, (char *) NULL); | |
13387711 SW |
11290 | else |
11291 | canonical_name = imported_name; | |
794684b6 | 11292 | |
32019081 JK |
11293 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) |
11294 | for (child_die = die->child; child_die && child_die->tag; | |
11295 | child_die = sibling_die (child_die)) | |
11296 | { | |
11297 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
11298 | represented by an imported module entry with an import attribute | |
11299 | referring to the module and owned entries corresponding to those | |
11300 | entities that are renamed as part of being imported. */ | |
11301 | ||
11302 | if (child_die->tag != DW_TAG_imported_declaration) | |
11303 | { | |
b98664d3 | 11304 | complaint (_("child DW_TAG_imported_declaration expected " |
9d8780f0 SM |
11305 | "- DIE at %s [in module %s]"), |
11306 | sect_offset_str (child_die->sect_off), | |
11307 | objfile_name (objfile)); | |
32019081 JK |
11308 | continue; |
11309 | } | |
11310 | ||
11311 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
11312 | if (import_attr == NULL) | |
11313 | { | |
b98664d3 | 11314 | complaint (_("Tag '%s' has no DW_AT_import"), |
32019081 JK |
11315 | dwarf_tag_name (child_die->tag)); |
11316 | continue; | |
11317 | } | |
11318 | ||
11319 | imported_cu = cu; | |
11320 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
11321 | &imported_cu); | |
11322 | imported_name = dwarf2_name (imported_die, imported_cu); | |
11323 | if (imported_name == NULL) | |
11324 | { | |
b98664d3 | 11325 | complaint (_("child DW_TAG_imported_declaration has unknown " |
9d8780f0 SM |
11326 | "imported name - DIE at %s [in module %s]"), |
11327 | sect_offset_str (child_die->sect_off), | |
11328 | objfile_name (objfile)); | |
32019081 JK |
11329 | continue; |
11330 | } | |
11331 | ||
eb1e02fd | 11332 | excludes.push_back (imported_name); |
32019081 JK |
11333 | |
11334 | process_die (child_die, cu); | |
11335 | } | |
11336 | ||
804d2729 | 11337 | add_using_directive (using_directives (cu), |
22cee43f PMR |
11338 | import_prefix, |
11339 | canonical_name, | |
11340 | import_alias, | |
11341 | imported_declaration, | |
11342 | excludes, | |
11343 | 0, | |
11344 | &objfile->objfile_obstack); | |
27aa8d6a SW |
11345 | } |
11346 | ||
5230b05a WT |
11347 | /* ICC<14 does not output the required DW_AT_declaration on incomplete |
11348 | types, but gives them a size of zero. Starting with version 14, | |
11349 | ICC is compatible with GCC. */ | |
11350 | ||
9068261f | 11351 | static bool |
5230b05a WT |
11352 | producer_is_icc_lt_14 (struct dwarf2_cu *cu) |
11353 | { | |
11354 | if (!cu->checked_producer) | |
11355 | check_producer (cu); | |
11356 | ||
11357 | return cu->producer_is_icc_lt_14; | |
11358 | } | |
11359 | ||
eb77c9df AB |
11360 | /* ICC generates a DW_AT_type for C void functions. This was observed on |
11361 | ICC 14.0.5.212, and appears to be against the DWARF spec (V5 3.3.2) | |
11362 | which says that void functions should not have a DW_AT_type. */ | |
11363 | ||
11364 | static bool | |
11365 | producer_is_icc (struct dwarf2_cu *cu) | |
11366 | { | |
11367 | if (!cu->checked_producer) | |
11368 | check_producer (cu); | |
11369 | ||
11370 | return cu->producer_is_icc; | |
11371 | } | |
11372 | ||
1b80a9fa JK |
11373 | /* Check for possibly missing DW_AT_comp_dir with relative .debug_line |
11374 | directory paths. GCC SVN r127613 (new option -fdebug-prefix-map) fixed | |
11375 | this, it was first present in GCC release 4.3.0. */ | |
11376 | ||
9068261f | 11377 | static bool |
1b80a9fa JK |
11378 | producer_is_gcc_lt_4_3 (struct dwarf2_cu *cu) |
11379 | { | |
11380 | if (!cu->checked_producer) | |
11381 | check_producer (cu); | |
11382 | ||
11383 | return cu->producer_is_gcc_lt_4_3; | |
11384 | } | |
11385 | ||
d721ba37 PA |
11386 | static file_and_directory |
11387 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu) | |
9291a0cd | 11388 | { |
d721ba37 PA |
11389 | file_and_directory res; |
11390 | ||
9291a0cd TT |
11391 | /* Find the filename. Do not use dwarf2_name here, since the filename |
11392 | is not a source language identifier. */ | |
d721ba37 PA |
11393 | res.name = dwarf2_string_attr (die, DW_AT_name, cu); |
11394 | res.comp_dir = dwarf2_string_attr (die, DW_AT_comp_dir, cu); | |
9291a0cd | 11395 | |
d721ba37 PA |
11396 | if (res.comp_dir == NULL |
11397 | && producer_is_gcc_lt_4_3 (cu) && res.name != NULL | |
11398 | && IS_ABSOLUTE_PATH (res.name)) | |
9291a0cd | 11399 | { |
d721ba37 PA |
11400 | res.comp_dir_storage = ldirname (res.name); |
11401 | if (!res.comp_dir_storage.empty ()) | |
11402 | res.comp_dir = res.comp_dir_storage.c_str (); | |
9291a0cd | 11403 | } |
d721ba37 | 11404 | if (res.comp_dir != NULL) |
9291a0cd TT |
11405 | { |
11406 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
11407 | directory, get rid of it. */ | |
d721ba37 | 11408 | const char *cp = strchr (res.comp_dir, ':'); |
9291a0cd | 11409 | |
d721ba37 PA |
11410 | if (cp && cp != res.comp_dir && cp[-1] == '.' && cp[1] == '/') |
11411 | res.comp_dir = cp + 1; | |
9291a0cd TT |
11412 | } |
11413 | ||
d721ba37 PA |
11414 | if (res.name == NULL) |
11415 | res.name = "<unknown>"; | |
11416 | ||
11417 | return res; | |
9291a0cd TT |
11418 | } |
11419 | ||
f4dc4d17 DE |
11420 | /* Handle DW_AT_stmt_list for a compilation unit. |
11421 | DIE is the DW_TAG_compile_unit die for CU. | |
c3b7b696 YQ |
11422 | COMP_DIR is the compilation directory. LOWPC is passed to |
11423 | dwarf_decode_lines. See dwarf_decode_lines comments about it. */ | |
2ab95328 TT |
11424 | |
11425 | static void | |
11426 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
c3b7b696 | 11427 | const char *comp_dir, CORE_ADDR lowpc) /* ARI: editCase function */ |
2ab95328 | 11428 | { |
518817b3 SM |
11429 | struct dwarf2_per_objfile *dwarf2_per_objfile |
11430 | = cu->per_cu->dwarf2_per_objfile; | |
527f3840 | 11431 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
2ab95328 | 11432 | struct attribute *attr; |
527f3840 JK |
11433 | struct line_header line_header_local; |
11434 | hashval_t line_header_local_hash; | |
527f3840 JK |
11435 | void **slot; |
11436 | int decode_mapping; | |
2ab95328 | 11437 | |
f4dc4d17 DE |
11438 | gdb_assert (! cu->per_cu->is_debug_types); |
11439 | ||
2ab95328 | 11440 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
527f3840 JK |
11441 | if (attr == NULL) |
11442 | return; | |
11443 | ||
9c541725 | 11444 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
527f3840 JK |
11445 | |
11446 | /* The line header hash table is only created if needed (it exists to | |
11447 | prevent redundant reading of the line table for partial_units). | |
11448 | If we're given a partial_unit, we'll need it. If we're given a | |
11449 | compile_unit, then use the line header hash table if it's already | |
11450 | created, but don't create one just yet. */ | |
11451 | ||
11452 | if (dwarf2_per_objfile->line_header_hash == NULL | |
11453 | && die->tag == DW_TAG_partial_unit) | |
2ab95328 | 11454 | { |
527f3840 JK |
11455 | dwarf2_per_objfile->line_header_hash |
11456 | = htab_create_alloc_ex (127, line_header_hash_voidp, | |
11457 | line_header_eq_voidp, | |
11458 | free_line_header_voidp, | |
11459 | &objfile->objfile_obstack, | |
11460 | hashtab_obstack_allocate, | |
11461 | dummy_obstack_deallocate); | |
11462 | } | |
2ab95328 | 11463 | |
9c541725 | 11464 | line_header_local.sect_off = line_offset; |
527f3840 JK |
11465 | line_header_local.offset_in_dwz = cu->per_cu->is_dwz; |
11466 | line_header_local_hash = line_header_hash (&line_header_local); | |
11467 | if (dwarf2_per_objfile->line_header_hash != NULL) | |
11468 | { | |
11469 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash, | |
11470 | &line_header_local, | |
11471 | line_header_local_hash, NO_INSERT); | |
11472 | ||
11473 | /* For DW_TAG_compile_unit we need info like symtab::linetable which | |
11474 | is not present in *SLOT (since if there is something in *SLOT then | |
11475 | it will be for a partial_unit). */ | |
11476 | if (die->tag == DW_TAG_partial_unit && slot != NULL) | |
dee91e82 | 11477 | { |
527f3840 | 11478 | gdb_assert (*slot != NULL); |
9a3c8263 | 11479 | cu->line_header = (struct line_header *) *slot; |
527f3840 | 11480 | return; |
dee91e82 | 11481 | } |
2ab95328 | 11482 | } |
527f3840 JK |
11483 | |
11484 | /* dwarf_decode_line_header does not yet provide sufficient information. | |
11485 | We always have to call also dwarf_decode_lines for it. */ | |
fff8551c PA |
11486 | line_header_up lh = dwarf_decode_line_header (line_offset, cu); |
11487 | if (lh == NULL) | |
527f3840 | 11488 | return; |
4c8aa72d PA |
11489 | |
11490 | cu->line_header = lh.release (); | |
11491 | cu->line_header_die_owner = die; | |
527f3840 JK |
11492 | |
11493 | if (dwarf2_per_objfile->line_header_hash == NULL) | |
11494 | slot = NULL; | |
11495 | else | |
11496 | { | |
11497 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash, | |
11498 | &line_header_local, | |
11499 | line_header_local_hash, INSERT); | |
11500 | gdb_assert (slot != NULL); | |
11501 | } | |
11502 | if (slot != NULL && *slot == NULL) | |
11503 | { | |
11504 | /* This newly decoded line number information unit will be owned | |
11505 | by line_header_hash hash table. */ | |
11506 | *slot = cu->line_header; | |
4c8aa72d | 11507 | cu->line_header_die_owner = NULL; |
527f3840 JK |
11508 | } |
11509 | else | |
11510 | { | |
11511 | /* We cannot free any current entry in (*slot) as that struct line_header | |
11512 | may be already used by multiple CUs. Create only temporary decoded | |
11513 | line_header for this CU - it may happen at most once for each line | |
11514 | number information unit. And if we're not using line_header_hash | |
11515 | then this is what we want as well. */ | |
11516 | gdb_assert (die->tag != DW_TAG_partial_unit); | |
527f3840 JK |
11517 | } |
11518 | decode_mapping = (die->tag != DW_TAG_partial_unit); | |
11519 | dwarf_decode_lines (cu->line_header, comp_dir, cu, NULL, lowpc, | |
11520 | decode_mapping); | |
fff8551c | 11521 | |
2ab95328 TT |
11522 | } |
11523 | ||
95554aad | 11524 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 11525 | |
c906108c | 11526 | static void |
e7c27a73 | 11527 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11528 | { |
518817b3 SM |
11529 | struct dwarf2_per_objfile *dwarf2_per_objfile |
11530 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 11531 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 11532 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
2acceee2 | 11533 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
11534 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
11535 | struct attribute *attr; | |
c906108c | 11536 | struct die_info *child_die; |
e142c38c | 11537 | CORE_ADDR baseaddr; |
6e70227d | 11538 | |
380618d6 | 11539 | prepare_one_comp_unit (cu, die, cu->language); |
e142c38c | 11540 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c | 11541 | |
fae299cd | 11542 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
11543 | |
11544 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
11545 | from finish_block. */ | |
2acceee2 | 11546 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c | 11547 | lowpc = highpc; |
3e29f34a | 11548 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
c906108c | 11549 | |
d721ba37 | 11550 | file_and_directory fnd = find_file_and_directory (die, cu); |
e1024ff1 | 11551 | |
f4b8a18d KW |
11552 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
11553 | standardised yet. As a workaround for the language detection we fall | |
11554 | back to the DW_AT_producer string. */ | |
11555 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
11556 | cu->language = language_opencl; | |
11557 | ||
3019eac3 DE |
11558 | /* Similar hack for Go. */ |
11559 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
11560 | set_cu_language (DW_LANG_Go, cu); | |
11561 | ||
d721ba37 | 11562 | dwarf2_start_symtab (cu, fnd.name, fnd.comp_dir, lowpc); |
3019eac3 DE |
11563 | |
11564 | /* Decode line number information if present. We do this before | |
11565 | processing child DIEs, so that the line header table is available | |
11566 | for DW_AT_decl_file. */ | |
d721ba37 | 11567 | handle_DW_AT_stmt_list (die, cu, fnd.comp_dir, lowpc); |
3019eac3 DE |
11568 | |
11569 | /* Process all dies in compilation unit. */ | |
11570 | if (die->child != NULL) | |
11571 | { | |
11572 | child_die = die->child; | |
11573 | while (child_die && child_die->tag) | |
11574 | { | |
11575 | process_die (child_die, cu); | |
11576 | child_die = sibling_die (child_die); | |
11577 | } | |
11578 | } | |
11579 | ||
11580 | /* Decode macro information, if present. Dwarf 2 macro information | |
11581 | refers to information in the line number info statement program | |
11582 | header, so we can only read it if we've read the header | |
11583 | successfully. */ | |
0af92d60 JK |
11584 | attr = dwarf2_attr (die, DW_AT_macros, cu); |
11585 | if (attr == NULL) | |
11586 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
3019eac3 DE |
11587 | if (attr && cu->line_header) |
11588 | { | |
11589 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
b98664d3 | 11590 | complaint (_("CU refers to both DW_AT_macros and DW_AT_macro_info")); |
3019eac3 | 11591 | |
43f3e411 | 11592 | dwarf_decode_macros (cu, DW_UNSND (attr), 1); |
3019eac3 DE |
11593 | } |
11594 | else | |
11595 | { | |
11596 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
11597 | if (attr && cu->line_header) | |
11598 | { | |
11599 | unsigned int macro_offset = DW_UNSND (attr); | |
11600 | ||
43f3e411 | 11601 | dwarf_decode_macros (cu, macro_offset, 0); |
3019eac3 DE |
11602 | } |
11603 | } | |
3019eac3 DE |
11604 | } |
11605 | ||
f4dc4d17 DE |
11606 | /* TU version of handle_DW_AT_stmt_list for read_type_unit_scope. |
11607 | Create the set of symtabs used by this TU, or if this TU is sharing | |
11608 | symtabs with another TU and the symtabs have already been created | |
11609 | then restore those symtabs in the line header. | |
11610 | We don't need the pc/line-number mapping for type units. */ | |
3019eac3 DE |
11611 | |
11612 | static void | |
f4dc4d17 | 11613 | setup_type_unit_groups (struct die_info *die, struct dwarf2_cu *cu) |
3019eac3 | 11614 | { |
f4dc4d17 DE |
11615 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
11616 | struct type_unit_group *tu_group; | |
11617 | int first_time; | |
3019eac3 | 11618 | struct attribute *attr; |
9c541725 | 11619 | unsigned int i; |
0186c6a7 | 11620 | struct signatured_type *sig_type; |
3019eac3 | 11621 | |
f4dc4d17 | 11622 | gdb_assert (per_cu->is_debug_types); |
0186c6a7 | 11623 | sig_type = (struct signatured_type *) per_cu; |
3019eac3 | 11624 | |
f4dc4d17 | 11625 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
3019eac3 | 11626 | |
f4dc4d17 | 11627 | /* If we're using .gdb_index (includes -readnow) then |
74e04d1c | 11628 | per_cu->type_unit_group may not have been set up yet. */ |
0186c6a7 DE |
11629 | if (sig_type->type_unit_group == NULL) |
11630 | sig_type->type_unit_group = get_type_unit_group (cu, attr); | |
11631 | tu_group = sig_type->type_unit_group; | |
f4dc4d17 DE |
11632 | |
11633 | /* If we've already processed this stmt_list there's no real need to | |
11634 | do it again, we could fake it and just recreate the part we need | |
11635 | (file name,index -> symtab mapping). If data shows this optimization | |
11636 | is useful we can do it then. */ | |
43f3e411 | 11637 | first_time = tu_group->compunit_symtab == NULL; |
f4dc4d17 DE |
11638 | |
11639 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
11640 | debug info. */ | |
fff8551c | 11641 | line_header_up lh; |
f4dc4d17 | 11642 | if (attr != NULL) |
3019eac3 | 11643 | { |
9c541725 | 11644 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
f4dc4d17 DE |
11645 | lh = dwarf_decode_line_header (line_offset, cu); |
11646 | } | |
11647 | if (lh == NULL) | |
11648 | { | |
11649 | if (first_time) | |
11650 | dwarf2_start_symtab (cu, "", NULL, 0); | |
11651 | else | |
11652 | { | |
11653 | gdb_assert (tu_group->symtabs == NULL); | |
804d2729 TT |
11654 | gdb_assert (cu->builder == nullptr); |
11655 | struct compunit_symtab *cust = tu_group->compunit_symtab; | |
11656 | cu->builder.reset (new struct buildsym_compunit | |
11657 | (COMPUNIT_OBJFILE (cust), "", | |
11658 | COMPUNIT_DIRNAME (cust), | |
11659 | compunit_language (cust), | |
11660 | 0, cust)); | |
f4dc4d17 | 11661 | } |
f4dc4d17 | 11662 | return; |
3019eac3 DE |
11663 | } |
11664 | ||
4c8aa72d PA |
11665 | cu->line_header = lh.release (); |
11666 | cu->line_header_die_owner = die; | |
3019eac3 | 11667 | |
f4dc4d17 DE |
11668 | if (first_time) |
11669 | { | |
43f3e411 | 11670 | struct compunit_symtab *cust = dwarf2_start_symtab (cu, "", NULL, 0); |
3019eac3 | 11671 | |
1fd60fc0 DE |
11672 | /* Note: We don't assign tu_group->compunit_symtab yet because we're |
11673 | still initializing it, and our caller (a few levels up) | |
11674 | process_full_type_unit still needs to know if this is the first | |
11675 | time. */ | |
11676 | ||
4c8aa72d PA |
11677 | tu_group->num_symtabs = cu->line_header->file_names.size (); |
11678 | tu_group->symtabs = XNEWVEC (struct symtab *, | |
11679 | cu->line_header->file_names.size ()); | |
3019eac3 | 11680 | |
4c8aa72d | 11681 | for (i = 0; i < cu->line_header->file_names.size (); ++i) |
f4dc4d17 | 11682 | { |
4c8aa72d | 11683 | file_entry &fe = cu->line_header->file_names[i]; |
3019eac3 | 11684 | |
804d2729 | 11685 | dwarf2_start_subfile (cu, fe.name, fe.include_dir (cu->line_header)); |
3019eac3 | 11686 | |
804d2729 | 11687 | if (cu->builder->get_current_subfile ()->symtab == NULL) |
f4dc4d17 | 11688 | { |
4c8aa72d PA |
11689 | /* NOTE: start_subfile will recognize when it's been |
11690 | passed a file it has already seen. So we can't | |
11691 | assume there's a simple mapping from | |
11692 | cu->line_header->file_names to subfiles, plus | |
11693 | cu->line_header->file_names may contain dups. */ | |
804d2729 TT |
11694 | cu->builder->get_current_subfile ()->symtab |
11695 | = allocate_symtab (cust, | |
11696 | cu->builder->get_current_subfile ()->name); | |
f4dc4d17 DE |
11697 | } |
11698 | ||
804d2729 | 11699 | fe.symtab = cu->builder->get_current_subfile ()->symtab; |
8c43009f | 11700 | tu_group->symtabs[i] = fe.symtab; |
f4dc4d17 DE |
11701 | } |
11702 | } | |
11703 | else | |
3019eac3 | 11704 | { |
804d2729 TT |
11705 | gdb_assert (cu->builder == nullptr); |
11706 | struct compunit_symtab *cust = tu_group->compunit_symtab; | |
11707 | cu->builder.reset (new struct buildsym_compunit | |
11708 | (COMPUNIT_OBJFILE (cust), "", | |
11709 | COMPUNIT_DIRNAME (cust), | |
11710 | compunit_language (cust), | |
11711 | 0, cust)); | |
f4dc4d17 | 11712 | |
4c8aa72d | 11713 | for (i = 0; i < cu->line_header->file_names.size (); ++i) |
f4dc4d17 | 11714 | { |
4c8aa72d | 11715 | file_entry &fe = cu->line_header->file_names[i]; |
f4dc4d17 | 11716 | |
4c8aa72d | 11717 | fe.symtab = tu_group->symtabs[i]; |
f4dc4d17 | 11718 | } |
3019eac3 DE |
11719 | } |
11720 | ||
f4dc4d17 DE |
11721 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
11722 | so they don't have a "real" (so to speak) symtab anyway. | |
11723 | There is later code that will assign the main symtab to all symbols | |
11724 | that don't have one. We need to handle the case of a symbol with a | |
11725 | missing symtab (DW_AT_decl_file) anyway. */ | |
11726 | } | |
3019eac3 | 11727 | |
f4dc4d17 DE |
11728 | /* Process DW_TAG_type_unit. |
11729 | For TUs we want to skip the first top level sibling if it's not the | |
11730 | actual type being defined by this TU. In this case the first top | |
11731 | level sibling is there to provide context only. */ | |
3019eac3 | 11732 | |
f4dc4d17 DE |
11733 | static void |
11734 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
11735 | { | |
11736 | struct die_info *child_die; | |
3019eac3 | 11737 | |
f4dc4d17 DE |
11738 | prepare_one_comp_unit (cu, die, language_minimal); |
11739 | ||
11740 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
11741 | We do this before processing child DIEs, so that the line header table | |
11742 | is available for DW_AT_decl_file. */ | |
11743 | setup_type_unit_groups (die, cu); | |
11744 | ||
11745 | if (die->child != NULL) | |
11746 | { | |
11747 | child_die = die->child; | |
11748 | while (child_die && child_die->tag) | |
11749 | { | |
11750 | process_die (child_die, cu); | |
11751 | child_die = sibling_die (child_die); | |
11752 | } | |
11753 | } | |
3019eac3 DE |
11754 | } |
11755 | \f | |
80626a55 DE |
11756 | /* DWO/DWP files. |
11757 | ||
11758 | http://gcc.gnu.org/wiki/DebugFission | |
11759 | http://gcc.gnu.org/wiki/DebugFissionDWP | |
11760 | ||
11761 | To simplify handling of both DWO files ("object" files with the DWARF info) | |
11762 | and DWP files (a file with the DWOs packaged up into one file), we treat | |
11763 | DWP files as having a collection of virtual DWO files. */ | |
3019eac3 DE |
11764 | |
11765 | static hashval_t | |
11766 | hash_dwo_file (const void *item) | |
11767 | { | |
9a3c8263 | 11768 | const struct dwo_file *dwo_file = (const struct dwo_file *) item; |
a2ce51a0 | 11769 | hashval_t hash; |
3019eac3 | 11770 | |
a2ce51a0 DE |
11771 | hash = htab_hash_string (dwo_file->dwo_name); |
11772 | if (dwo_file->comp_dir != NULL) | |
11773 | hash += htab_hash_string (dwo_file->comp_dir); | |
11774 | return hash; | |
3019eac3 DE |
11775 | } |
11776 | ||
11777 | static int | |
11778 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
11779 | { | |
9a3c8263 SM |
11780 | const struct dwo_file *lhs = (const struct dwo_file *) item_lhs; |
11781 | const struct dwo_file *rhs = (const struct dwo_file *) item_rhs; | |
3019eac3 | 11782 | |
a2ce51a0 DE |
11783 | if (strcmp (lhs->dwo_name, rhs->dwo_name) != 0) |
11784 | return 0; | |
11785 | if (lhs->comp_dir == NULL || rhs->comp_dir == NULL) | |
11786 | return lhs->comp_dir == rhs->comp_dir; | |
11787 | return strcmp (lhs->comp_dir, rhs->comp_dir) == 0; | |
3019eac3 DE |
11788 | } |
11789 | ||
11790 | /* Allocate a hash table for DWO files. */ | |
11791 | ||
11792 | static htab_t | |
ed2dc618 | 11793 | allocate_dwo_file_hash_table (struct objfile *objfile) |
3019eac3 | 11794 | { |
3019eac3 DE |
11795 | return htab_create_alloc_ex (41, |
11796 | hash_dwo_file, | |
11797 | eq_dwo_file, | |
11798 | NULL, | |
11799 | &objfile->objfile_obstack, | |
11800 | hashtab_obstack_allocate, | |
11801 | dummy_obstack_deallocate); | |
11802 | } | |
11803 | ||
80626a55 DE |
11804 | /* Lookup DWO file DWO_NAME. */ |
11805 | ||
11806 | static void ** | |
ed2dc618 SM |
11807 | lookup_dwo_file_slot (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11808 | const char *dwo_name, | |
11809 | const char *comp_dir) | |
80626a55 DE |
11810 | { |
11811 | struct dwo_file find_entry; | |
11812 | void **slot; | |
11813 | ||
11814 | if (dwarf2_per_objfile->dwo_files == NULL) | |
ed2dc618 SM |
11815 | dwarf2_per_objfile->dwo_files |
11816 | = allocate_dwo_file_hash_table (dwarf2_per_objfile->objfile); | |
80626a55 DE |
11817 | |
11818 | memset (&find_entry, 0, sizeof (find_entry)); | |
0ac5b59e DE |
11819 | find_entry.dwo_name = dwo_name; |
11820 | find_entry.comp_dir = comp_dir; | |
80626a55 DE |
11821 | slot = htab_find_slot (dwarf2_per_objfile->dwo_files, &find_entry, INSERT); |
11822 | ||
11823 | return slot; | |
11824 | } | |
11825 | ||
3019eac3 DE |
11826 | static hashval_t |
11827 | hash_dwo_unit (const void *item) | |
11828 | { | |
9a3c8263 | 11829 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 DE |
11830 | |
11831 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
11832 | return dwo_unit->signature; | |
11833 | } | |
11834 | ||
11835 | static int | |
11836 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
11837 | { | |
9a3c8263 SM |
11838 | const struct dwo_unit *lhs = (const struct dwo_unit *) item_lhs; |
11839 | const struct dwo_unit *rhs = (const struct dwo_unit *) item_rhs; | |
3019eac3 DE |
11840 | |
11841 | /* The signature is assumed to be unique within the DWO file. | |
11842 | So while object file CU dwo_id's always have the value zero, | |
11843 | that's OK, assuming each object file DWO file has only one CU, | |
11844 | and that's the rule for now. */ | |
11845 | return lhs->signature == rhs->signature; | |
11846 | } | |
11847 | ||
11848 | /* Allocate a hash table for DWO CUs,TUs. | |
11849 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
11850 | ||
11851 | static htab_t | |
11852 | allocate_dwo_unit_table (struct objfile *objfile) | |
11853 | { | |
11854 | /* Start out with a pretty small number. | |
11855 | Generally DWO files contain only one CU and maybe some TUs. */ | |
11856 | return htab_create_alloc_ex (3, | |
11857 | hash_dwo_unit, | |
11858 | eq_dwo_unit, | |
11859 | NULL, | |
11860 | &objfile->objfile_obstack, | |
11861 | hashtab_obstack_allocate, | |
11862 | dummy_obstack_deallocate); | |
11863 | } | |
11864 | ||
80626a55 | 11865 | /* Structure used to pass data to create_dwo_debug_info_hash_table_reader. */ |
3019eac3 | 11866 | |
19c3d4c9 | 11867 | struct create_dwo_cu_data |
3019eac3 DE |
11868 | { |
11869 | struct dwo_file *dwo_file; | |
19c3d4c9 | 11870 | struct dwo_unit dwo_unit; |
3019eac3 DE |
11871 | }; |
11872 | ||
19c3d4c9 | 11873 | /* die_reader_func for create_dwo_cu. */ |
3019eac3 DE |
11874 | |
11875 | static void | |
19c3d4c9 DE |
11876 | create_dwo_cu_reader (const struct die_reader_specs *reader, |
11877 | const gdb_byte *info_ptr, | |
11878 | struct die_info *comp_unit_die, | |
11879 | int has_children, | |
11880 | void *datap) | |
3019eac3 DE |
11881 | { |
11882 | struct dwarf2_cu *cu = reader->cu; | |
9c541725 | 11883 | sect_offset sect_off = cu->per_cu->sect_off; |
8a0459fd | 11884 | struct dwarf2_section_info *section = cu->per_cu->section; |
9a3c8263 | 11885 | struct create_dwo_cu_data *data = (struct create_dwo_cu_data *) datap; |
3019eac3 | 11886 | struct dwo_file *dwo_file = data->dwo_file; |
19c3d4c9 | 11887 | struct dwo_unit *dwo_unit = &data->dwo_unit; |
3019eac3 | 11888 | struct attribute *attr; |
3019eac3 DE |
11889 | |
11890 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
11891 | if (attr == NULL) | |
11892 | { | |
b98664d3 | 11893 | complaint (_("Dwarf Error: debug entry at offset %s is missing" |
19c3d4c9 | 11894 | " its dwo_id [in module %s]"), |
9d8780f0 | 11895 | sect_offset_str (sect_off), dwo_file->dwo_name); |
3019eac3 DE |
11896 | return; |
11897 | } | |
11898 | ||
3019eac3 DE |
11899 | dwo_unit->dwo_file = dwo_file; |
11900 | dwo_unit->signature = DW_UNSND (attr); | |
8a0459fd | 11901 | dwo_unit->section = section; |
9c541725 | 11902 | dwo_unit->sect_off = sect_off; |
3019eac3 DE |
11903 | dwo_unit->length = cu->per_cu->length; |
11904 | ||
b4f54984 | 11905 | if (dwarf_read_debug) |
9d8780f0 SM |
11906 | fprintf_unfiltered (gdb_stdlog, " offset %s, dwo_id %s\n", |
11907 | sect_offset_str (sect_off), | |
9c541725 | 11908 | hex_string (dwo_unit->signature)); |
3019eac3 DE |
11909 | } |
11910 | ||
33c5cd75 | 11911 | /* Create the dwo_units for the CUs in a DWO_FILE. |
19c3d4c9 | 11912 | Note: This function processes DWO files only, not DWP files. */ |
3019eac3 | 11913 | |
33c5cd75 | 11914 | static void |
ed2dc618 SM |
11915 | create_cus_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11916 | struct dwo_file &dwo_file, dwarf2_section_info §ion, | |
33c5cd75 | 11917 | htab_t &cus_htab) |
3019eac3 DE |
11918 | { |
11919 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
d521ce57 | 11920 | const gdb_byte *info_ptr, *end_ptr; |
3019eac3 | 11921 | |
33c5cd75 DB |
11922 | dwarf2_read_section (objfile, §ion); |
11923 | info_ptr = section.buffer; | |
3019eac3 DE |
11924 | |
11925 | if (info_ptr == NULL) | |
33c5cd75 | 11926 | return; |
3019eac3 | 11927 | |
b4f54984 | 11928 | if (dwarf_read_debug) |
19c3d4c9 DE |
11929 | { |
11930 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", | |
33c5cd75 DB |
11931 | get_section_name (§ion), |
11932 | get_section_file_name (§ion)); | |
19c3d4c9 | 11933 | } |
3019eac3 | 11934 | |
33c5cd75 | 11935 | end_ptr = info_ptr + section.size; |
3019eac3 DE |
11936 | while (info_ptr < end_ptr) |
11937 | { | |
11938 | struct dwarf2_per_cu_data per_cu; | |
33c5cd75 DB |
11939 | struct create_dwo_cu_data create_dwo_cu_data; |
11940 | struct dwo_unit *dwo_unit; | |
11941 | void **slot; | |
11942 | sect_offset sect_off = (sect_offset) (info_ptr - section.buffer); | |
3019eac3 | 11943 | |
19c3d4c9 DE |
11944 | memset (&create_dwo_cu_data.dwo_unit, 0, |
11945 | sizeof (create_dwo_cu_data.dwo_unit)); | |
3019eac3 | 11946 | memset (&per_cu, 0, sizeof (per_cu)); |
e3b94546 | 11947 | per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
3019eac3 | 11948 | per_cu.is_debug_types = 0; |
33c5cd75 DB |
11949 | per_cu.sect_off = sect_offset (info_ptr - section.buffer); |
11950 | per_cu.section = §ion; | |
c5ed0576 | 11951 | create_dwo_cu_data.dwo_file = &dwo_file; |
33c5cd75 DB |
11952 | |
11953 | init_cutu_and_read_dies_no_follow ( | |
11954 | &per_cu, &dwo_file, create_dwo_cu_reader, &create_dwo_cu_data); | |
11955 | info_ptr += per_cu.length; | |
11956 | ||
11957 | // If the unit could not be parsed, skip it. | |
11958 | if (create_dwo_cu_data.dwo_unit.dwo_file == NULL) | |
11959 | continue; | |
3019eac3 | 11960 | |
33c5cd75 DB |
11961 | if (cus_htab == NULL) |
11962 | cus_htab = allocate_dwo_unit_table (objfile); | |
19c3d4c9 | 11963 | |
33c5cd75 DB |
11964 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); |
11965 | *dwo_unit = create_dwo_cu_data.dwo_unit; | |
11966 | slot = htab_find_slot (cus_htab, dwo_unit, INSERT); | |
11967 | gdb_assert (slot != NULL); | |
11968 | if (*slot != NULL) | |
19c3d4c9 | 11969 | { |
33c5cd75 DB |
11970 | const struct dwo_unit *dup_cu = (const struct dwo_unit *)*slot; |
11971 | sect_offset dup_sect_off = dup_cu->sect_off; | |
19c3d4c9 | 11972 | |
b98664d3 | 11973 | complaint (_("debug cu entry at offset %s is duplicate to" |
9d8780f0 SM |
11974 | " the entry at offset %s, signature %s"), |
11975 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
33c5cd75 | 11976 | hex_string (dwo_unit->signature)); |
19c3d4c9 | 11977 | } |
33c5cd75 | 11978 | *slot = (void *)dwo_unit; |
3019eac3 | 11979 | } |
3019eac3 DE |
11980 | } |
11981 | ||
80626a55 DE |
11982 | /* DWP file .debug_{cu,tu}_index section format: |
11983 | [ref: http://gcc.gnu.org/wiki/DebugFissionDWP] | |
11984 | ||
d2415c6c DE |
11985 | DWP Version 1: |
11986 | ||
80626a55 DE |
11987 | Both index sections have the same format, and serve to map a 64-bit |
11988 | signature to a set of section numbers. Each section begins with a header, | |
11989 | followed by a hash table of 64-bit signatures, a parallel table of 32-bit | |
11990 | indexes, and a pool of 32-bit section numbers. The index sections will be | |
11991 | aligned at 8-byte boundaries in the file. | |
11992 | ||
d2415c6c DE |
11993 | The index section header consists of: |
11994 | ||
11995 | V, 32 bit version number | |
11996 | -, 32 bits unused | |
11997 | N, 32 bit number of compilation units or type units in the index | |
11998 | M, 32 bit number of slots in the hash table | |
80626a55 | 11999 | |
d2415c6c | 12000 | Numbers are recorded using the byte order of the application binary. |
80626a55 | 12001 | |
d2415c6c DE |
12002 | The hash table begins at offset 16 in the section, and consists of an array |
12003 | of M 64-bit slots. Each slot contains a 64-bit signature (using the byte | |
12004 | order of the application binary). Unused slots in the hash table are 0. | |
12005 | (We rely on the extreme unlikeliness of a signature being exactly 0.) | |
80626a55 | 12006 | |
d2415c6c DE |
12007 | The parallel table begins immediately after the hash table |
12008 | (at offset 16 + 8 * M from the beginning of the section), and consists of an | |
12009 | array of 32-bit indexes (using the byte order of the application binary), | |
12010 | corresponding 1-1 with slots in the hash table. Each entry in the parallel | |
12011 | table contains a 32-bit index into the pool of section numbers. For unused | |
12012 | hash table slots, the corresponding entry in the parallel table will be 0. | |
80626a55 | 12013 | |
73869dc2 DE |
12014 | The pool of section numbers begins immediately following the hash table |
12015 | (at offset 16 + 12 * M from the beginning of the section). The pool of | |
12016 | section numbers consists of an array of 32-bit words (using the byte order | |
12017 | of the application binary). Each item in the array is indexed starting | |
12018 | from 0. The hash table entry provides the index of the first section | |
12019 | number in the set. Additional section numbers in the set follow, and the | |
12020 | set is terminated by a 0 entry (section number 0 is not used in ELF). | |
12021 | ||
12022 | In each set of section numbers, the .debug_info.dwo or .debug_types.dwo | |
12023 | section must be the first entry in the set, and the .debug_abbrev.dwo must | |
12024 | be the second entry. Other members of the set may follow in any order. | |
12025 | ||
12026 | --- | |
12027 | ||
12028 | DWP Version 2: | |
12029 | ||
12030 | DWP Version 2 combines all the .debug_info, etc. sections into one, | |
12031 | and the entries in the index tables are now offsets into these sections. | |
12032 | CU offsets begin at 0. TU offsets begin at the size of the .debug_info | |
12033 | section. | |
12034 | ||
12035 | Index Section Contents: | |
12036 | Header | |
12037 | Hash Table of Signatures dwp_hash_table.hash_table | |
12038 | Parallel Table of Indices dwp_hash_table.unit_table | |
12039 | Table of Section Offsets dwp_hash_table.v2.{section_ids,offsets} | |
12040 | Table of Section Sizes dwp_hash_table.v2.sizes | |
12041 | ||
12042 | The index section header consists of: | |
12043 | ||
12044 | V, 32 bit version number | |
12045 | L, 32 bit number of columns in the table of section offsets | |
12046 | N, 32 bit number of compilation units or type units in the index | |
12047 | M, 32 bit number of slots in the hash table | |
12048 | ||
12049 | Numbers are recorded using the byte order of the application binary. | |
12050 | ||
12051 | The hash table has the same format as version 1. | |
12052 | The parallel table of indices has the same format as version 1, | |
12053 | except that the entries are origin-1 indices into the table of sections | |
12054 | offsets and the table of section sizes. | |
12055 | ||
12056 | The table of offsets begins immediately following the parallel table | |
12057 | (at offset 16 + 12 * M from the beginning of the section). The table is | |
12058 | a two-dimensional array of 32-bit words (using the byte order of the | |
12059 | application binary), with L columns and N+1 rows, in row-major order. | |
12060 | Each row in the array is indexed starting from 0. The first row provides | |
12061 | a key to the remaining rows: each column in this row provides an identifier | |
12062 | for a debug section, and the offsets in the same column of subsequent rows | |
12063 | refer to that section. The section identifiers are: | |
12064 | ||
12065 | DW_SECT_INFO 1 .debug_info.dwo | |
12066 | DW_SECT_TYPES 2 .debug_types.dwo | |
12067 | DW_SECT_ABBREV 3 .debug_abbrev.dwo | |
12068 | DW_SECT_LINE 4 .debug_line.dwo | |
12069 | DW_SECT_LOC 5 .debug_loc.dwo | |
12070 | DW_SECT_STR_OFFSETS 6 .debug_str_offsets.dwo | |
12071 | DW_SECT_MACINFO 7 .debug_macinfo.dwo | |
12072 | DW_SECT_MACRO 8 .debug_macro.dwo | |
12073 | ||
12074 | The offsets provided by the CU and TU index sections are the base offsets | |
12075 | for the contributions made by each CU or TU to the corresponding section | |
12076 | in the package file. Each CU and TU header contains an abbrev_offset | |
12077 | field, used to find the abbreviations table for that CU or TU within the | |
12078 | contribution to the .debug_abbrev.dwo section for that CU or TU, and should | |
12079 | be interpreted as relative to the base offset given in the index section. | |
12080 | Likewise, offsets into .debug_line.dwo from DW_AT_stmt_list attributes | |
12081 | should be interpreted as relative to the base offset for .debug_line.dwo, | |
12082 | and offsets into other debug sections obtained from DWARF attributes should | |
12083 | also be interpreted as relative to the corresponding base offset. | |
12084 | ||
12085 | The table of sizes begins immediately following the table of offsets. | |
12086 | Like the table of offsets, it is a two-dimensional array of 32-bit words, | |
12087 | with L columns and N rows, in row-major order. Each row in the array is | |
12088 | indexed starting from 1 (row 0 is shared by the two tables). | |
12089 | ||
12090 | --- | |
12091 | ||
12092 | Hash table lookup is handled the same in version 1 and 2: | |
12093 | ||
12094 | We assume that N and M will not exceed 2^32 - 1. | |
12095 | The size of the hash table, M, must be 2^k such that 2^k > 3*N/2. | |
12096 | ||
d2415c6c DE |
12097 | Given a 64-bit compilation unit signature or a type signature S, an entry |
12098 | in the hash table is located as follows: | |
80626a55 | 12099 | |
d2415c6c DE |
12100 | 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with |
12101 | the low-order k bits all set to 1. | |
80626a55 | 12102 | |
d2415c6c | 12103 | 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1). |
80626a55 | 12104 | |
d2415c6c DE |
12105 | 3) If the hash table entry at index H matches the signature, use that |
12106 | entry. If the hash table entry at index H is unused (all zeroes), | |
12107 | terminate the search: the signature is not present in the table. | |
80626a55 | 12108 | |
d2415c6c | 12109 | 4) Let H = (H + H') modulo M. Repeat at Step 3. |
80626a55 | 12110 | |
d2415c6c | 12111 | Because M > N and H' and M are relatively prime, the search is guaranteed |
73869dc2 | 12112 | to stop at an unused slot or find the match. */ |
80626a55 DE |
12113 | |
12114 | /* Create a hash table to map DWO IDs to their CU/TU entry in | |
12115 | .debug_{info,types}.dwo in DWP_FILE. | |
12116 | Returns NULL if there isn't one. | |
12117 | Note: This function processes DWP files only, not DWO files. */ | |
12118 | ||
12119 | static struct dwp_hash_table * | |
ed2dc618 SM |
12120 | create_dwp_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12121 | struct dwp_file *dwp_file, int is_debug_types) | |
80626a55 DE |
12122 | { |
12123 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
400174b1 | 12124 | bfd *dbfd = dwp_file->dbfd.get (); |
948f8e3d | 12125 | const gdb_byte *index_ptr, *index_end; |
80626a55 | 12126 | struct dwarf2_section_info *index; |
73869dc2 | 12127 | uint32_t version, nr_columns, nr_units, nr_slots; |
80626a55 DE |
12128 | struct dwp_hash_table *htab; |
12129 | ||
12130 | if (is_debug_types) | |
12131 | index = &dwp_file->sections.tu_index; | |
12132 | else | |
12133 | index = &dwp_file->sections.cu_index; | |
12134 | ||
12135 | if (dwarf2_section_empty_p (index)) | |
12136 | return NULL; | |
12137 | dwarf2_read_section (objfile, index); | |
12138 | ||
12139 | index_ptr = index->buffer; | |
12140 | index_end = index_ptr + index->size; | |
12141 | ||
12142 | version = read_4_bytes (dbfd, index_ptr); | |
73869dc2 DE |
12143 | index_ptr += 4; |
12144 | if (version == 2) | |
12145 | nr_columns = read_4_bytes (dbfd, index_ptr); | |
12146 | else | |
12147 | nr_columns = 0; | |
12148 | index_ptr += 4; | |
80626a55 DE |
12149 | nr_units = read_4_bytes (dbfd, index_ptr); |
12150 | index_ptr += 4; | |
12151 | nr_slots = read_4_bytes (dbfd, index_ptr); | |
12152 | index_ptr += 4; | |
12153 | ||
73869dc2 | 12154 | if (version != 1 && version != 2) |
80626a55 | 12155 | { |
21aa081e | 12156 | error (_("Dwarf Error: unsupported DWP file version (%s)" |
80626a55 | 12157 | " [in module %s]"), |
21aa081e | 12158 | pulongest (version), dwp_file->name); |
80626a55 DE |
12159 | } |
12160 | if (nr_slots != (nr_slots & -nr_slots)) | |
12161 | { | |
21aa081e | 12162 | error (_("Dwarf Error: number of slots in DWP hash table (%s)" |
80626a55 | 12163 | " is not power of 2 [in module %s]"), |
21aa081e | 12164 | pulongest (nr_slots), dwp_file->name); |
80626a55 DE |
12165 | } |
12166 | ||
12167 | htab = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_hash_table); | |
73869dc2 DE |
12168 | htab->version = version; |
12169 | htab->nr_columns = nr_columns; | |
80626a55 DE |
12170 | htab->nr_units = nr_units; |
12171 | htab->nr_slots = nr_slots; | |
12172 | htab->hash_table = index_ptr; | |
12173 | htab->unit_table = htab->hash_table + sizeof (uint64_t) * nr_slots; | |
73869dc2 DE |
12174 | |
12175 | /* Exit early if the table is empty. */ | |
12176 | if (nr_slots == 0 || nr_units == 0 | |
12177 | || (version == 2 && nr_columns == 0)) | |
12178 | { | |
12179 | /* All must be zero. */ | |
12180 | if (nr_slots != 0 || nr_units != 0 | |
12181 | || (version == 2 && nr_columns != 0)) | |
12182 | { | |
b98664d3 | 12183 | complaint (_("Empty DWP but nr_slots,nr_units,nr_columns not" |
73869dc2 DE |
12184 | " all zero [in modules %s]"), |
12185 | dwp_file->name); | |
12186 | } | |
12187 | return htab; | |
12188 | } | |
12189 | ||
12190 | if (version == 1) | |
12191 | { | |
12192 | htab->section_pool.v1.indices = | |
12193 | htab->unit_table + sizeof (uint32_t) * nr_slots; | |
12194 | /* It's harder to decide whether the section is too small in v1. | |
12195 | V1 is deprecated anyway so we punt. */ | |
12196 | } | |
12197 | else | |
12198 | { | |
12199 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
12200 | int *ids = htab->section_pool.v2.section_ids; | |
04fd5eed | 12201 | size_t sizeof_ids = sizeof (htab->section_pool.v2.section_ids); |
73869dc2 DE |
12202 | /* Reverse map for error checking. */ |
12203 | int ids_seen[DW_SECT_MAX + 1]; | |
12204 | int i; | |
12205 | ||
12206 | if (nr_columns < 2) | |
12207 | { | |
12208 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
12209 | " in section table [in module %s]"), | |
12210 | dwp_file->name); | |
12211 | } | |
12212 | if (nr_columns > MAX_NR_V2_DWO_SECTIONS) | |
12213 | { | |
12214 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
12215 | " in section table [in module %s]"), | |
12216 | dwp_file->name); | |
12217 | } | |
04fd5eed GB |
12218 | memset (ids, 255, sizeof_ids); |
12219 | memset (ids_seen, 255, sizeof (ids_seen)); | |
73869dc2 DE |
12220 | for (i = 0; i < nr_columns; ++i) |
12221 | { | |
12222 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
12223 | ||
12224 | if (id < DW_SECT_MIN || id > DW_SECT_MAX) | |
12225 | { | |
12226 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
12227 | " in section table [in module %s]"), | |
12228 | id, dwp_file->name); | |
12229 | } | |
12230 | if (ids_seen[id] != -1) | |
12231 | { | |
12232 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
12233 | " id %d in section table [in module %s]"), | |
12234 | id, dwp_file->name); | |
12235 | } | |
12236 | ids_seen[id] = i; | |
12237 | ids[i] = id; | |
12238 | } | |
12239 | /* Must have exactly one info or types section. */ | |
12240 | if (((ids_seen[DW_SECT_INFO] != -1) | |
12241 | + (ids_seen[DW_SECT_TYPES] != -1)) | |
12242 | != 1) | |
12243 | { | |
12244 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
12245 | " DWO info/types section [in module %s]"), | |
12246 | dwp_file->name); | |
12247 | } | |
12248 | /* Must have an abbrev section. */ | |
12249 | if (ids_seen[DW_SECT_ABBREV] == -1) | |
12250 | { | |
12251 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
12252 | " section [in module %s]"), | |
12253 | dwp_file->name); | |
12254 | } | |
12255 | htab->section_pool.v2.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
12256 | htab->section_pool.v2.sizes = | |
12257 | htab->section_pool.v2.offsets + (sizeof (uint32_t) | |
12258 | * nr_units * nr_columns); | |
12259 | if ((htab->section_pool.v2.sizes + (sizeof (uint32_t) | |
12260 | * nr_units * nr_columns)) | |
12261 | > index_end) | |
12262 | { | |
12263 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
12264 | " [in module %s]"), | |
12265 | dwp_file->name); | |
12266 | } | |
12267 | } | |
80626a55 DE |
12268 | |
12269 | return htab; | |
12270 | } | |
12271 | ||
12272 | /* Update SECTIONS with the data from SECTP. | |
12273 | ||
12274 | This function is like the other "locate" section routines that are | |
12275 | passed to bfd_map_over_sections, but in this context the sections to | |
73869dc2 | 12276 | read comes from the DWP V1 hash table, not the full ELF section table. |
80626a55 DE |
12277 | |
12278 | The result is non-zero for success, or zero if an error was found. */ | |
12279 | ||
12280 | static int | |
73869dc2 DE |
12281 | locate_v1_virtual_dwo_sections (asection *sectp, |
12282 | struct virtual_v1_dwo_sections *sections) | |
80626a55 DE |
12283 | { |
12284 | const struct dwop_section_names *names = &dwop_section_names; | |
12285 | ||
12286 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12287 | { | |
12288 | /* There can be only one. */ | |
049412e3 | 12289 | if (sections->abbrev.s.section != NULL) |
80626a55 | 12290 | return 0; |
049412e3 | 12291 | sections->abbrev.s.section = sectp; |
80626a55 DE |
12292 | sections->abbrev.size = bfd_get_section_size (sectp); |
12293 | } | |
12294 | else if (section_is_p (sectp->name, &names->info_dwo) | |
12295 | || section_is_p (sectp->name, &names->types_dwo)) | |
12296 | { | |
12297 | /* There can be only one. */ | |
049412e3 | 12298 | if (sections->info_or_types.s.section != NULL) |
80626a55 | 12299 | return 0; |
049412e3 | 12300 | sections->info_or_types.s.section = sectp; |
80626a55 DE |
12301 | sections->info_or_types.size = bfd_get_section_size (sectp); |
12302 | } | |
12303 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12304 | { | |
12305 | /* There can be only one. */ | |
049412e3 | 12306 | if (sections->line.s.section != NULL) |
80626a55 | 12307 | return 0; |
049412e3 | 12308 | sections->line.s.section = sectp; |
80626a55 DE |
12309 | sections->line.size = bfd_get_section_size (sectp); |
12310 | } | |
12311 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12312 | { | |
12313 | /* There can be only one. */ | |
049412e3 | 12314 | if (sections->loc.s.section != NULL) |
80626a55 | 12315 | return 0; |
049412e3 | 12316 | sections->loc.s.section = sectp; |
80626a55 DE |
12317 | sections->loc.size = bfd_get_section_size (sectp); |
12318 | } | |
12319 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
12320 | { | |
12321 | /* There can be only one. */ | |
049412e3 | 12322 | if (sections->macinfo.s.section != NULL) |
80626a55 | 12323 | return 0; |
049412e3 | 12324 | sections->macinfo.s.section = sectp; |
80626a55 DE |
12325 | sections->macinfo.size = bfd_get_section_size (sectp); |
12326 | } | |
12327 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12328 | { | |
12329 | /* There can be only one. */ | |
049412e3 | 12330 | if (sections->macro.s.section != NULL) |
80626a55 | 12331 | return 0; |
049412e3 | 12332 | sections->macro.s.section = sectp; |
80626a55 DE |
12333 | sections->macro.size = bfd_get_section_size (sectp); |
12334 | } | |
12335 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12336 | { | |
12337 | /* There can be only one. */ | |
049412e3 | 12338 | if (sections->str_offsets.s.section != NULL) |
80626a55 | 12339 | return 0; |
049412e3 | 12340 | sections->str_offsets.s.section = sectp; |
80626a55 DE |
12341 | sections->str_offsets.size = bfd_get_section_size (sectp); |
12342 | } | |
12343 | else | |
12344 | { | |
12345 | /* No other kind of section is valid. */ | |
12346 | return 0; | |
12347 | } | |
12348 | ||
12349 | return 1; | |
12350 | } | |
12351 | ||
73869dc2 DE |
12352 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. |
12353 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12354 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12355 | This is for DWP version 1 files. */ | |
80626a55 DE |
12356 | |
12357 | static struct dwo_unit * | |
ed2dc618 SM |
12358 | create_dwo_unit_in_dwp_v1 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12359 | struct dwp_file *dwp_file, | |
73869dc2 DE |
12360 | uint32_t unit_index, |
12361 | const char *comp_dir, | |
12362 | ULONGEST signature, int is_debug_types) | |
80626a55 DE |
12363 | { |
12364 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
73869dc2 DE |
12365 | const struct dwp_hash_table *dwp_htab = |
12366 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12367 | bfd *dbfd = dwp_file->dbfd.get (); |
80626a55 DE |
12368 | const char *kind = is_debug_types ? "TU" : "CU"; |
12369 | struct dwo_file *dwo_file; | |
12370 | struct dwo_unit *dwo_unit; | |
73869dc2 | 12371 | struct virtual_v1_dwo_sections sections; |
80626a55 | 12372 | void **dwo_file_slot; |
80626a55 DE |
12373 | int i; |
12374 | ||
73869dc2 DE |
12375 | gdb_assert (dwp_file->version == 1); |
12376 | ||
b4f54984 | 12377 | if (dwarf_read_debug) |
80626a55 | 12378 | { |
73869dc2 | 12379 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V1 file: %s\n", |
80626a55 | 12380 | kind, |
73869dc2 | 12381 | pulongest (unit_index), hex_string (signature), |
80626a55 DE |
12382 | dwp_file->name); |
12383 | } | |
12384 | ||
19ac8c2e | 12385 | /* Fetch the sections of this DWO unit. |
80626a55 DE |
12386 | Put a limit on the number of sections we look for so that bad data |
12387 | doesn't cause us to loop forever. */ | |
12388 | ||
73869dc2 | 12389 | #define MAX_NR_V1_DWO_SECTIONS \ |
80626a55 DE |
12390 | (1 /* .debug_info or .debug_types */ \ |
12391 | + 1 /* .debug_abbrev */ \ | |
12392 | + 1 /* .debug_line */ \ | |
12393 | + 1 /* .debug_loc */ \ | |
12394 | + 1 /* .debug_str_offsets */ \ | |
19ac8c2e | 12395 | + 1 /* .debug_macro or .debug_macinfo */ \ |
80626a55 DE |
12396 | + 1 /* trailing zero */) |
12397 | ||
12398 | memset (§ions, 0, sizeof (sections)); | |
80626a55 | 12399 | |
73869dc2 | 12400 | for (i = 0; i < MAX_NR_V1_DWO_SECTIONS; ++i) |
80626a55 DE |
12401 | { |
12402 | asection *sectp; | |
12403 | uint32_t section_nr = | |
12404 | read_4_bytes (dbfd, | |
73869dc2 DE |
12405 | dwp_htab->section_pool.v1.indices |
12406 | + (unit_index + i) * sizeof (uint32_t)); | |
80626a55 DE |
12407 | |
12408 | if (section_nr == 0) | |
12409 | break; | |
12410 | if (section_nr >= dwp_file->num_sections) | |
12411 | { | |
12412 | error (_("Dwarf Error: bad DWP hash table, section number too large" | |
12413 | " [in module %s]"), | |
12414 | dwp_file->name); | |
12415 | } | |
12416 | ||
12417 | sectp = dwp_file->elf_sections[section_nr]; | |
73869dc2 | 12418 | if (! locate_v1_virtual_dwo_sections (sectp, §ions)) |
80626a55 DE |
12419 | { |
12420 | error (_("Dwarf Error: bad DWP hash table, invalid section found" | |
12421 | " [in module %s]"), | |
12422 | dwp_file->name); | |
12423 | } | |
12424 | } | |
12425 | ||
12426 | if (i < 2 | |
a32a8923 DE |
12427 | || dwarf2_section_empty_p (§ions.info_or_types) |
12428 | || dwarf2_section_empty_p (§ions.abbrev)) | |
80626a55 DE |
12429 | { |
12430 | error (_("Dwarf Error: bad DWP hash table, missing DWO sections" | |
12431 | " [in module %s]"), | |
12432 | dwp_file->name); | |
12433 | } | |
73869dc2 | 12434 | if (i == MAX_NR_V1_DWO_SECTIONS) |
80626a55 DE |
12435 | { |
12436 | error (_("Dwarf Error: bad DWP hash table, too many DWO sections" | |
12437 | " [in module %s]"), | |
12438 | dwp_file->name); | |
12439 | } | |
12440 | ||
12441 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12442 | have dwo_unit "live" in that. At least for now. | |
12443 | ||
12444 | The DWP file can be made up of a random collection of CUs and TUs. | |
c766f7ec | 12445 | However, for each CU + set of TUs that came from the same original DWO |
57d63ce2 DE |
12446 | file, we can combine them back into a virtual DWO file to save space |
12447 | (fewer struct dwo_file objects to allocate). Remember that for really | |
80626a55 DE |
12448 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ |
12449 | ||
791afaa2 TT |
12450 | std::string virtual_dwo_name = |
12451 | string_printf ("virtual-dwo/%d-%d-%d-%d", | |
12452 | get_section_id (§ions.abbrev), | |
12453 | get_section_id (§ions.line), | |
12454 | get_section_id (§ions.loc), | |
12455 | get_section_id (§ions.str_offsets)); | |
80626a55 | 12456 | /* Can we use an existing virtual DWO file? */ |
ed2dc618 SM |
12457 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
12458 | virtual_dwo_name.c_str (), | |
12459 | comp_dir); | |
80626a55 DE |
12460 | /* Create one if necessary. */ |
12461 | if (*dwo_file_slot == NULL) | |
12462 | { | |
b4f54984 | 12463 | if (dwarf_read_debug) |
80626a55 DE |
12464 | { |
12465 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 12466 | virtual_dwo_name.c_str ()); |
80626a55 DE |
12467 | } |
12468 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
224c3ddb SM |
12469 | dwo_file->dwo_name |
12470 | = (const char *) obstack_copy0 (&objfile->objfile_obstack, | |
791afaa2 TT |
12471 | virtual_dwo_name.c_str (), |
12472 | virtual_dwo_name.size ()); | |
0ac5b59e | 12473 | dwo_file->comp_dir = comp_dir; |
80626a55 DE |
12474 | dwo_file->sections.abbrev = sections.abbrev; |
12475 | dwo_file->sections.line = sections.line; | |
12476 | dwo_file->sections.loc = sections.loc; | |
12477 | dwo_file->sections.macinfo = sections.macinfo; | |
12478 | dwo_file->sections.macro = sections.macro; | |
12479 | dwo_file->sections.str_offsets = sections.str_offsets; | |
12480 | /* The "str" section is global to the entire DWP file. */ | |
12481 | dwo_file->sections.str = dwp_file->sections.str; | |
57d63ce2 | 12482 | /* The info or types section is assigned below to dwo_unit, |
80626a55 DE |
12483 | there's no need to record it in dwo_file. |
12484 | Also, we can't simply record type sections in dwo_file because | |
12485 | we record a pointer into the vector in dwo_unit. As we collect more | |
12486 | types we'll grow the vector and eventually have to reallocate space | |
57d63ce2 DE |
12487 | for it, invalidating all copies of pointers into the previous |
12488 | contents. */ | |
80626a55 DE |
12489 | *dwo_file_slot = dwo_file; |
12490 | } | |
12491 | else | |
12492 | { | |
b4f54984 | 12493 | if (dwarf_read_debug) |
80626a55 DE |
12494 | { |
12495 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 12496 | virtual_dwo_name.c_str ()); |
80626a55 | 12497 | } |
9a3c8263 | 12498 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
80626a55 | 12499 | } |
80626a55 DE |
12500 | |
12501 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
12502 | dwo_unit->dwo_file = dwo_file; | |
12503 | dwo_unit->signature = signature; | |
8d749320 SM |
12504 | dwo_unit->section = |
12505 | XOBNEW (&objfile->objfile_obstack, struct dwarf2_section_info); | |
8a0459fd | 12506 | *dwo_unit->section = sections.info_or_types; |
57d63ce2 | 12507 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
80626a55 DE |
12508 | |
12509 | return dwo_unit; | |
12510 | } | |
12511 | ||
73869dc2 DE |
12512 | /* Subroutine of create_dwo_unit_in_dwp_v2 to simplify it. |
12513 | Given a pointer to the containing section SECTION, and OFFSET,SIZE of the | |
12514 | piece within that section used by a TU/CU, return a virtual section | |
12515 | of just that piece. */ | |
12516 | ||
12517 | static struct dwarf2_section_info | |
ed2dc618 SM |
12518 | create_dwp_v2_section (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12519 | struct dwarf2_section_info *section, | |
73869dc2 DE |
12520 | bfd_size_type offset, bfd_size_type size) |
12521 | { | |
12522 | struct dwarf2_section_info result; | |
12523 | asection *sectp; | |
12524 | ||
12525 | gdb_assert (section != NULL); | |
12526 | gdb_assert (!section->is_virtual); | |
12527 | ||
12528 | memset (&result, 0, sizeof (result)); | |
12529 | result.s.containing_section = section; | |
12530 | result.is_virtual = 1; | |
12531 | ||
12532 | if (size == 0) | |
12533 | return result; | |
12534 | ||
12535 | sectp = get_section_bfd_section (section); | |
12536 | ||
12537 | /* Flag an error if the piece denoted by OFFSET,SIZE is outside the | |
12538 | bounds of the real section. This is a pretty-rare event, so just | |
12539 | flag an error (easier) instead of a warning and trying to cope. */ | |
12540 | if (sectp == NULL | |
12541 | || offset + size > bfd_get_section_size (sectp)) | |
12542 | { | |
73869dc2 DE |
12543 | error (_("Dwarf Error: Bad DWP V2 section info, doesn't fit" |
12544 | " in section %s [in module %s]"), | |
12545 | sectp ? bfd_section_name (abfd, sectp) : "<unknown>", | |
12546 | objfile_name (dwarf2_per_objfile->objfile)); | |
12547 | } | |
12548 | ||
12549 | result.virtual_offset = offset; | |
12550 | result.size = size; | |
12551 | return result; | |
12552 | } | |
12553 | ||
12554 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
12555 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12556 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12557 | This is for DWP version 2 files. */ | |
12558 | ||
12559 | static struct dwo_unit * | |
ed2dc618 SM |
12560 | create_dwo_unit_in_dwp_v2 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12561 | struct dwp_file *dwp_file, | |
73869dc2 DE |
12562 | uint32_t unit_index, |
12563 | const char *comp_dir, | |
12564 | ULONGEST signature, int is_debug_types) | |
12565 | { | |
12566 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
12567 | const struct dwp_hash_table *dwp_htab = | |
12568 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12569 | bfd *dbfd = dwp_file->dbfd.get (); |
73869dc2 DE |
12570 | const char *kind = is_debug_types ? "TU" : "CU"; |
12571 | struct dwo_file *dwo_file; | |
12572 | struct dwo_unit *dwo_unit; | |
12573 | struct virtual_v2_dwo_sections sections; | |
12574 | void **dwo_file_slot; | |
73869dc2 DE |
12575 | int i; |
12576 | ||
12577 | gdb_assert (dwp_file->version == 2); | |
12578 | ||
b4f54984 | 12579 | if (dwarf_read_debug) |
73869dc2 DE |
12580 | { |
12581 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V2 file: %s\n", | |
12582 | kind, | |
12583 | pulongest (unit_index), hex_string (signature), | |
12584 | dwp_file->name); | |
12585 | } | |
12586 | ||
12587 | /* Fetch the section offsets of this DWO unit. */ | |
12588 | ||
12589 | memset (§ions, 0, sizeof (sections)); | |
73869dc2 DE |
12590 | |
12591 | for (i = 0; i < dwp_htab->nr_columns; ++i) | |
12592 | { | |
12593 | uint32_t offset = read_4_bytes (dbfd, | |
12594 | dwp_htab->section_pool.v2.offsets | |
12595 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12596 | + i) | |
12597 | * sizeof (uint32_t))); | |
12598 | uint32_t size = read_4_bytes (dbfd, | |
12599 | dwp_htab->section_pool.v2.sizes | |
12600 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12601 | + i) | |
12602 | * sizeof (uint32_t))); | |
12603 | ||
12604 | switch (dwp_htab->section_pool.v2.section_ids[i]) | |
12605 | { | |
12606 | case DW_SECT_INFO: | |
12607 | case DW_SECT_TYPES: | |
12608 | sections.info_or_types_offset = offset; | |
12609 | sections.info_or_types_size = size; | |
12610 | break; | |
12611 | case DW_SECT_ABBREV: | |
12612 | sections.abbrev_offset = offset; | |
12613 | sections.abbrev_size = size; | |
12614 | break; | |
12615 | case DW_SECT_LINE: | |
12616 | sections.line_offset = offset; | |
12617 | sections.line_size = size; | |
12618 | break; | |
12619 | case DW_SECT_LOC: | |
12620 | sections.loc_offset = offset; | |
12621 | sections.loc_size = size; | |
12622 | break; | |
12623 | case DW_SECT_STR_OFFSETS: | |
12624 | sections.str_offsets_offset = offset; | |
12625 | sections.str_offsets_size = size; | |
12626 | break; | |
12627 | case DW_SECT_MACINFO: | |
12628 | sections.macinfo_offset = offset; | |
12629 | sections.macinfo_size = size; | |
12630 | break; | |
12631 | case DW_SECT_MACRO: | |
12632 | sections.macro_offset = offset; | |
12633 | sections.macro_size = size; | |
12634 | break; | |
12635 | } | |
12636 | } | |
12637 | ||
12638 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12639 | have dwo_unit "live" in that. At least for now. | |
12640 | ||
12641 | The DWP file can be made up of a random collection of CUs and TUs. | |
12642 | However, for each CU + set of TUs that came from the same original DWO | |
12643 | file, we can combine them back into a virtual DWO file to save space | |
12644 | (fewer struct dwo_file objects to allocate). Remember that for really | |
12645 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
12646 | ||
791afaa2 TT |
12647 | std::string virtual_dwo_name = |
12648 | string_printf ("virtual-dwo/%ld-%ld-%ld-%ld", | |
12649 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), | |
12650 | (long) (sections.line_size ? sections.line_offset : 0), | |
12651 | (long) (sections.loc_size ? sections.loc_offset : 0), | |
12652 | (long) (sections.str_offsets_size | |
12653 | ? sections.str_offsets_offset : 0)); | |
73869dc2 | 12654 | /* Can we use an existing virtual DWO file? */ |
ed2dc618 SM |
12655 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
12656 | virtual_dwo_name.c_str (), | |
12657 | comp_dir); | |
73869dc2 DE |
12658 | /* Create one if necessary. */ |
12659 | if (*dwo_file_slot == NULL) | |
12660 | { | |
b4f54984 | 12661 | if (dwarf_read_debug) |
73869dc2 DE |
12662 | { |
12663 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 12664 | virtual_dwo_name.c_str ()); |
73869dc2 DE |
12665 | } |
12666 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
224c3ddb SM |
12667 | dwo_file->dwo_name |
12668 | = (const char *) obstack_copy0 (&objfile->objfile_obstack, | |
791afaa2 TT |
12669 | virtual_dwo_name.c_str (), |
12670 | virtual_dwo_name.size ()); | |
73869dc2 DE |
12671 | dwo_file->comp_dir = comp_dir; |
12672 | dwo_file->sections.abbrev = | |
ed2dc618 | 12673 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.abbrev, |
73869dc2 DE |
12674 | sections.abbrev_offset, sections.abbrev_size); |
12675 | dwo_file->sections.line = | |
ed2dc618 | 12676 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.line, |
73869dc2 DE |
12677 | sections.line_offset, sections.line_size); |
12678 | dwo_file->sections.loc = | |
ed2dc618 | 12679 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.loc, |
73869dc2 DE |
12680 | sections.loc_offset, sections.loc_size); |
12681 | dwo_file->sections.macinfo = | |
ed2dc618 | 12682 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.macinfo, |
73869dc2 DE |
12683 | sections.macinfo_offset, sections.macinfo_size); |
12684 | dwo_file->sections.macro = | |
ed2dc618 | 12685 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.macro, |
73869dc2 DE |
12686 | sections.macro_offset, sections.macro_size); |
12687 | dwo_file->sections.str_offsets = | |
ed2dc618 SM |
12688 | create_dwp_v2_section (dwarf2_per_objfile, |
12689 | &dwp_file->sections.str_offsets, | |
73869dc2 DE |
12690 | sections.str_offsets_offset, |
12691 | sections.str_offsets_size); | |
12692 | /* The "str" section is global to the entire DWP file. */ | |
12693 | dwo_file->sections.str = dwp_file->sections.str; | |
12694 | /* The info or types section is assigned below to dwo_unit, | |
12695 | there's no need to record it in dwo_file. | |
12696 | Also, we can't simply record type sections in dwo_file because | |
12697 | we record a pointer into the vector in dwo_unit. As we collect more | |
12698 | types we'll grow the vector and eventually have to reallocate space | |
12699 | for it, invalidating all copies of pointers into the previous | |
12700 | contents. */ | |
12701 | *dwo_file_slot = dwo_file; | |
12702 | } | |
12703 | else | |
12704 | { | |
b4f54984 | 12705 | if (dwarf_read_debug) |
73869dc2 DE |
12706 | { |
12707 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 12708 | virtual_dwo_name.c_str ()); |
73869dc2 | 12709 | } |
9a3c8263 | 12710 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
73869dc2 | 12711 | } |
73869dc2 DE |
12712 | |
12713 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
12714 | dwo_unit->dwo_file = dwo_file; | |
12715 | dwo_unit->signature = signature; | |
8d749320 SM |
12716 | dwo_unit->section = |
12717 | XOBNEW (&objfile->objfile_obstack, struct dwarf2_section_info); | |
ed2dc618 SM |
12718 | *dwo_unit->section = create_dwp_v2_section (dwarf2_per_objfile, |
12719 | is_debug_types | |
73869dc2 DE |
12720 | ? &dwp_file->sections.types |
12721 | : &dwp_file->sections.info, | |
12722 | sections.info_or_types_offset, | |
12723 | sections.info_or_types_size); | |
12724 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ | |
12725 | ||
12726 | return dwo_unit; | |
12727 | } | |
12728 | ||
57d63ce2 DE |
12729 | /* Lookup the DWO unit with SIGNATURE in DWP_FILE. |
12730 | Returns NULL if the signature isn't found. */ | |
80626a55 DE |
12731 | |
12732 | static struct dwo_unit * | |
ed2dc618 SM |
12733 | lookup_dwo_unit_in_dwp (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12734 | struct dwp_file *dwp_file, const char *comp_dir, | |
57d63ce2 | 12735 | ULONGEST signature, int is_debug_types) |
80626a55 | 12736 | { |
57d63ce2 DE |
12737 | const struct dwp_hash_table *dwp_htab = |
12738 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12739 | bfd *dbfd = dwp_file->dbfd.get (); |
57d63ce2 | 12740 | uint32_t mask = dwp_htab->nr_slots - 1; |
80626a55 DE |
12741 | uint32_t hash = signature & mask; |
12742 | uint32_t hash2 = ((signature >> 32) & mask) | 1; | |
12743 | unsigned int i; | |
12744 | void **slot; | |
870f88f7 | 12745 | struct dwo_unit find_dwo_cu; |
80626a55 DE |
12746 | |
12747 | memset (&find_dwo_cu, 0, sizeof (find_dwo_cu)); | |
12748 | find_dwo_cu.signature = signature; | |
19ac8c2e DE |
12749 | slot = htab_find_slot (is_debug_types |
12750 | ? dwp_file->loaded_tus | |
12751 | : dwp_file->loaded_cus, | |
12752 | &find_dwo_cu, INSERT); | |
80626a55 DE |
12753 | |
12754 | if (*slot != NULL) | |
9a3c8263 | 12755 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12756 | |
12757 | /* Use a for loop so that we don't loop forever on bad debug info. */ | |
57d63ce2 | 12758 | for (i = 0; i < dwp_htab->nr_slots; ++i) |
80626a55 DE |
12759 | { |
12760 | ULONGEST signature_in_table; | |
12761 | ||
12762 | signature_in_table = | |
57d63ce2 | 12763 | read_8_bytes (dbfd, dwp_htab->hash_table + hash * sizeof (uint64_t)); |
80626a55 DE |
12764 | if (signature_in_table == signature) |
12765 | { | |
57d63ce2 DE |
12766 | uint32_t unit_index = |
12767 | read_4_bytes (dbfd, | |
12768 | dwp_htab->unit_table + hash * sizeof (uint32_t)); | |
80626a55 | 12769 | |
73869dc2 DE |
12770 | if (dwp_file->version == 1) |
12771 | { | |
ed2dc618 SM |
12772 | *slot = create_dwo_unit_in_dwp_v1 (dwarf2_per_objfile, |
12773 | dwp_file, unit_index, | |
73869dc2 DE |
12774 | comp_dir, signature, |
12775 | is_debug_types); | |
12776 | } | |
12777 | else | |
12778 | { | |
ed2dc618 SM |
12779 | *slot = create_dwo_unit_in_dwp_v2 (dwarf2_per_objfile, |
12780 | dwp_file, unit_index, | |
73869dc2 DE |
12781 | comp_dir, signature, |
12782 | is_debug_types); | |
12783 | } | |
9a3c8263 | 12784 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12785 | } |
12786 | if (signature_in_table == 0) | |
12787 | return NULL; | |
12788 | hash = (hash + hash2) & mask; | |
12789 | } | |
12790 | ||
12791 | error (_("Dwarf Error: bad DWP hash table, lookup didn't terminate" | |
12792 | " [in module %s]"), | |
12793 | dwp_file->name); | |
12794 | } | |
12795 | ||
ab5088bf | 12796 | /* Subroutine of open_dwo_file,open_dwp_file to simplify them. |
3019eac3 DE |
12797 | Open the file specified by FILE_NAME and hand it off to BFD for |
12798 | preliminary analysis. Return a newly initialized bfd *, which | |
12799 | includes a canonicalized copy of FILE_NAME. | |
80626a55 | 12800 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
6ac97d4c DE |
12801 | SEARCH_CWD is true if the current directory is to be searched. |
12802 | It will be searched before debug-file-directory. | |
13aaf454 DE |
12803 | If successful, the file is added to the bfd include table of the |
12804 | objfile's bfd (see gdb_bfd_record_inclusion). | |
6ac97d4c | 12805 | If unable to find/open the file, return NULL. |
3019eac3 DE |
12806 | NOTE: This function is derived from symfile_bfd_open. */ |
12807 | ||
192b62ce | 12808 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
12809 | try_open_dwop_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12810 | const char *file_name, int is_dwp, int search_cwd) | |
3019eac3 | 12811 | { |
24b9144d | 12812 | int desc; |
9c02c129 DE |
12813 | /* Blech. OPF_TRY_CWD_FIRST also disables searching the path list if |
12814 | FILE_NAME contains a '/'. So we can't use it. Instead prepend "." | |
12815 | to debug_file_directory. */ | |
e0cc99a6 | 12816 | const char *search_path; |
9c02c129 DE |
12817 | static const char dirname_separator_string[] = { DIRNAME_SEPARATOR, '\0' }; |
12818 | ||
e0cc99a6 | 12819 | gdb::unique_xmalloc_ptr<char> search_path_holder; |
6ac97d4c DE |
12820 | if (search_cwd) |
12821 | { | |
12822 | if (*debug_file_directory != '\0') | |
e0cc99a6 TT |
12823 | { |
12824 | search_path_holder.reset (concat (".", dirname_separator_string, | |
12825 | debug_file_directory, | |
12826 | (char *) NULL)); | |
12827 | search_path = search_path_holder.get (); | |
12828 | } | |
6ac97d4c | 12829 | else |
e0cc99a6 | 12830 | search_path = "."; |
6ac97d4c | 12831 | } |
9c02c129 | 12832 | else |
e0cc99a6 | 12833 | search_path = debug_file_directory; |
3019eac3 | 12834 | |
24b9144d | 12835 | openp_flags flags = OPF_RETURN_REALPATH; |
80626a55 DE |
12836 | if (is_dwp) |
12837 | flags |= OPF_SEARCH_IN_PATH; | |
e0cc99a6 TT |
12838 | |
12839 | gdb::unique_xmalloc_ptr<char> absolute_name; | |
9c02c129 | 12840 | desc = openp (search_path, flags, file_name, |
3019eac3 DE |
12841 | O_RDONLY | O_BINARY, &absolute_name); |
12842 | if (desc < 0) | |
12843 | return NULL; | |
12844 | ||
e0cc99a6 TT |
12845 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (absolute_name.get (), |
12846 | gnutarget, desc)); | |
9c02c129 DE |
12847 | if (sym_bfd == NULL) |
12848 | return NULL; | |
192b62ce | 12849 | bfd_set_cacheable (sym_bfd.get (), 1); |
3019eac3 | 12850 | |
192b62ce TT |
12851 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
12852 | return NULL; | |
3019eac3 | 12853 | |
13aaf454 DE |
12854 | /* Success. Record the bfd as having been included by the objfile's bfd. |
12855 | This is important because things like demangled_names_hash lives in the | |
12856 | objfile's per_bfd space and may have references to things like symbol | |
12857 | names that live in the DWO/DWP file's per_bfd space. PR 16426. */ | |
192b62ce | 12858 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, sym_bfd.get ()); |
13aaf454 | 12859 | |
3019eac3 DE |
12860 | return sym_bfd; |
12861 | } | |
12862 | ||
ab5088bf | 12863 | /* Try to open DWO file FILE_NAME. |
3019eac3 DE |
12864 | COMP_DIR is the DW_AT_comp_dir attribute. |
12865 | The result is the bfd handle of the file. | |
12866 | If there is a problem finding or opening the file, return NULL. | |
12867 | Upon success, the canonicalized path of the file is stored in the bfd, | |
12868 | same as symfile_bfd_open. */ | |
12869 | ||
192b62ce | 12870 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
12871 | open_dwo_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12872 | const char *file_name, const char *comp_dir) | |
3019eac3 | 12873 | { |
80626a55 | 12874 | if (IS_ABSOLUTE_PATH (file_name)) |
ed2dc618 SM |
12875 | return try_open_dwop_file (dwarf2_per_objfile, file_name, |
12876 | 0 /*is_dwp*/, 0 /*search_cwd*/); | |
3019eac3 DE |
12877 | |
12878 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
12879 | ||
12880 | if (comp_dir != NULL) | |
12881 | { | |
b36cec19 PA |
12882 | char *path_to_try = concat (comp_dir, SLASH_STRING, |
12883 | file_name, (char *) NULL); | |
3019eac3 DE |
12884 | |
12885 | /* NOTE: If comp_dir is a relative path, this will also try the | |
12886 | search path, which seems useful. */ | |
ed2dc618 SM |
12887 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (dwarf2_per_objfile, |
12888 | path_to_try, | |
12889 | 0 /*is_dwp*/, | |
192b62ce | 12890 | 1 /*search_cwd*/)); |
3019eac3 DE |
12891 | xfree (path_to_try); |
12892 | if (abfd != NULL) | |
12893 | return abfd; | |
12894 | } | |
12895 | ||
12896 | /* That didn't work, try debug-file-directory, which, despite its name, | |
12897 | is a list of paths. */ | |
12898 | ||
12899 | if (*debug_file_directory == '\0') | |
12900 | return NULL; | |
12901 | ||
ed2dc618 SM |
12902 | return try_open_dwop_file (dwarf2_per_objfile, file_name, |
12903 | 0 /*is_dwp*/, 1 /*search_cwd*/); | |
3019eac3 DE |
12904 | } |
12905 | ||
80626a55 DE |
12906 | /* This function is mapped across the sections and remembers the offset and |
12907 | size of each of the DWO debugging sections we are interested in. */ | |
12908 | ||
12909 | static void | |
12910 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, void *dwo_sections_ptr) | |
12911 | { | |
9a3c8263 | 12912 | struct dwo_sections *dwo_sections = (struct dwo_sections *) dwo_sections_ptr; |
80626a55 DE |
12913 | const struct dwop_section_names *names = &dwop_section_names; |
12914 | ||
12915 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12916 | { | |
049412e3 | 12917 | dwo_sections->abbrev.s.section = sectp; |
80626a55 DE |
12918 | dwo_sections->abbrev.size = bfd_get_section_size (sectp); |
12919 | } | |
12920 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12921 | { | |
049412e3 | 12922 | dwo_sections->info.s.section = sectp; |
80626a55 DE |
12923 | dwo_sections->info.size = bfd_get_section_size (sectp); |
12924 | } | |
12925 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12926 | { | |
049412e3 | 12927 | dwo_sections->line.s.section = sectp; |
80626a55 DE |
12928 | dwo_sections->line.size = bfd_get_section_size (sectp); |
12929 | } | |
12930 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12931 | { | |
049412e3 | 12932 | dwo_sections->loc.s.section = sectp; |
80626a55 DE |
12933 | dwo_sections->loc.size = bfd_get_section_size (sectp); |
12934 | } | |
12935 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
12936 | { | |
049412e3 | 12937 | dwo_sections->macinfo.s.section = sectp; |
80626a55 DE |
12938 | dwo_sections->macinfo.size = bfd_get_section_size (sectp); |
12939 | } | |
12940 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12941 | { | |
049412e3 | 12942 | dwo_sections->macro.s.section = sectp; |
80626a55 DE |
12943 | dwo_sections->macro.size = bfd_get_section_size (sectp); |
12944 | } | |
12945 | else if (section_is_p (sectp->name, &names->str_dwo)) | |
12946 | { | |
049412e3 | 12947 | dwo_sections->str.s.section = sectp; |
80626a55 DE |
12948 | dwo_sections->str.size = bfd_get_section_size (sectp); |
12949 | } | |
12950 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12951 | { | |
049412e3 | 12952 | dwo_sections->str_offsets.s.section = sectp; |
80626a55 DE |
12953 | dwo_sections->str_offsets.size = bfd_get_section_size (sectp); |
12954 | } | |
12955 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
12956 | { | |
12957 | struct dwarf2_section_info type_section; | |
12958 | ||
12959 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 12960 | type_section.s.section = sectp; |
80626a55 DE |
12961 | type_section.size = bfd_get_section_size (sectp); |
12962 | VEC_safe_push (dwarf2_section_info_def, dwo_sections->types, | |
12963 | &type_section); | |
12964 | } | |
12965 | } | |
12966 | ||
ab5088bf | 12967 | /* Initialize the use of the DWO file specified by DWO_NAME and referenced |
19c3d4c9 | 12968 | by PER_CU. This is for the non-DWP case. |
80626a55 | 12969 | The result is NULL if DWO_NAME can't be found. */ |
3019eac3 DE |
12970 | |
12971 | static struct dwo_file * | |
0ac5b59e DE |
12972 | open_and_init_dwo_file (struct dwarf2_per_cu_data *per_cu, |
12973 | const char *dwo_name, const char *comp_dir) | |
3019eac3 | 12974 | { |
ed2dc618 | 12975 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
3019eac3 | 12976 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 | 12977 | |
ed2dc618 | 12978 | gdb_bfd_ref_ptr dbfd (open_dwo_file (dwarf2_per_objfile, dwo_name, comp_dir)); |
80626a55 DE |
12979 | if (dbfd == NULL) |
12980 | { | |
b4f54984 | 12981 | if (dwarf_read_debug) |
80626a55 DE |
12982 | fprintf_unfiltered (gdb_stdlog, "DWO file not found: %s\n", dwo_name); |
12983 | return NULL; | |
12984 | } | |
263db9a1 TT |
12985 | |
12986 | /* We use a unique pointer here, despite the obstack allocation, | |
12987 | because a dwo_file needs some cleanup if it is abandoned. */ | |
12988 | dwo_file_up dwo_file (OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
12989 | struct dwo_file)); | |
0ac5b59e DE |
12990 | dwo_file->dwo_name = dwo_name; |
12991 | dwo_file->comp_dir = comp_dir; | |
192b62ce | 12992 | dwo_file->dbfd = dbfd.release (); |
3019eac3 | 12993 | |
192b62ce TT |
12994 | bfd_map_over_sections (dwo_file->dbfd, dwarf2_locate_dwo_sections, |
12995 | &dwo_file->sections); | |
3019eac3 | 12996 | |
ed2dc618 SM |
12997 | create_cus_hash_table (dwarf2_per_objfile, *dwo_file, dwo_file->sections.info, |
12998 | dwo_file->cus); | |
3019eac3 | 12999 | |
263db9a1 | 13000 | create_debug_types_hash_table (dwarf2_per_objfile, dwo_file.get (), |
ed2dc618 | 13001 | dwo_file->sections.types, dwo_file->tus); |
3019eac3 | 13002 | |
b4f54984 | 13003 | if (dwarf_read_debug) |
80626a55 DE |
13004 | fprintf_unfiltered (gdb_stdlog, "DWO file found: %s\n", dwo_name); |
13005 | ||
263db9a1 | 13006 | return dwo_file.release (); |
3019eac3 DE |
13007 | } |
13008 | ||
80626a55 | 13009 | /* This function is mapped across the sections and remembers the offset and |
73869dc2 DE |
13010 | size of each of the DWP debugging sections common to version 1 and 2 that |
13011 | we are interested in. */ | |
3019eac3 | 13012 | |
80626a55 | 13013 | static void |
73869dc2 DE |
13014 | dwarf2_locate_common_dwp_sections (bfd *abfd, asection *sectp, |
13015 | void *dwp_file_ptr) | |
3019eac3 | 13016 | { |
9a3c8263 | 13017 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
80626a55 DE |
13018 | const struct dwop_section_names *names = &dwop_section_names; |
13019 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
3019eac3 | 13020 | |
80626a55 | 13021 | /* Record the ELF section number for later lookup: this is what the |
73869dc2 | 13022 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ |
80626a55 DE |
13023 | gdb_assert (elf_section_nr < dwp_file->num_sections); |
13024 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
3019eac3 | 13025 | |
80626a55 DE |
13026 | /* Look for specific sections that we need. */ |
13027 | if (section_is_p (sectp->name, &names->str_dwo)) | |
13028 | { | |
049412e3 | 13029 | dwp_file->sections.str.s.section = sectp; |
80626a55 DE |
13030 | dwp_file->sections.str.size = bfd_get_section_size (sectp); |
13031 | } | |
13032 | else if (section_is_p (sectp->name, &names->cu_index)) | |
13033 | { | |
049412e3 | 13034 | dwp_file->sections.cu_index.s.section = sectp; |
80626a55 DE |
13035 | dwp_file->sections.cu_index.size = bfd_get_section_size (sectp); |
13036 | } | |
13037 | else if (section_is_p (sectp->name, &names->tu_index)) | |
13038 | { | |
049412e3 | 13039 | dwp_file->sections.tu_index.s.section = sectp; |
80626a55 DE |
13040 | dwp_file->sections.tu_index.size = bfd_get_section_size (sectp); |
13041 | } | |
13042 | } | |
3019eac3 | 13043 | |
73869dc2 DE |
13044 | /* This function is mapped across the sections and remembers the offset and |
13045 | size of each of the DWP version 2 debugging sections that we are interested | |
13046 | in. This is split into a separate function because we don't know if we | |
13047 | have version 1 or 2 until we parse the cu_index/tu_index sections. */ | |
13048 | ||
13049 | static void | |
13050 | dwarf2_locate_v2_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
13051 | { | |
9a3c8263 | 13052 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
73869dc2 DE |
13053 | const struct dwop_section_names *names = &dwop_section_names; |
13054 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
13055 | ||
13056 | /* Record the ELF section number for later lookup: this is what the | |
13057 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
13058 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
13059 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
13060 | ||
13061 | /* Look for specific sections that we need. */ | |
13062 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
13063 | { | |
049412e3 | 13064 | dwp_file->sections.abbrev.s.section = sectp; |
73869dc2 DE |
13065 | dwp_file->sections.abbrev.size = bfd_get_section_size (sectp); |
13066 | } | |
13067 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
13068 | { | |
049412e3 | 13069 | dwp_file->sections.info.s.section = sectp; |
73869dc2 DE |
13070 | dwp_file->sections.info.size = bfd_get_section_size (sectp); |
13071 | } | |
13072 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
13073 | { | |
049412e3 | 13074 | dwp_file->sections.line.s.section = sectp; |
73869dc2 DE |
13075 | dwp_file->sections.line.size = bfd_get_section_size (sectp); |
13076 | } | |
13077 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
13078 | { | |
049412e3 | 13079 | dwp_file->sections.loc.s.section = sectp; |
73869dc2 DE |
13080 | dwp_file->sections.loc.size = bfd_get_section_size (sectp); |
13081 | } | |
13082 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
13083 | { | |
049412e3 | 13084 | dwp_file->sections.macinfo.s.section = sectp; |
73869dc2 DE |
13085 | dwp_file->sections.macinfo.size = bfd_get_section_size (sectp); |
13086 | } | |
13087 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
13088 | { | |
049412e3 | 13089 | dwp_file->sections.macro.s.section = sectp; |
73869dc2 DE |
13090 | dwp_file->sections.macro.size = bfd_get_section_size (sectp); |
13091 | } | |
13092 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
13093 | { | |
049412e3 | 13094 | dwp_file->sections.str_offsets.s.section = sectp; |
73869dc2 DE |
13095 | dwp_file->sections.str_offsets.size = bfd_get_section_size (sectp); |
13096 | } | |
13097 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
13098 | { | |
049412e3 | 13099 | dwp_file->sections.types.s.section = sectp; |
73869dc2 DE |
13100 | dwp_file->sections.types.size = bfd_get_section_size (sectp); |
13101 | } | |
13102 | } | |
13103 | ||
80626a55 | 13104 | /* Hash function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13105 | |
80626a55 DE |
13106 | static hashval_t |
13107 | hash_dwp_loaded_cutus (const void *item) | |
13108 | { | |
9a3c8263 | 13109 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 | 13110 | |
80626a55 DE |
13111 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
13112 | return dwo_unit->signature; | |
3019eac3 DE |
13113 | } |
13114 | ||
80626a55 | 13115 | /* Equality function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13116 | |
80626a55 DE |
13117 | static int |
13118 | eq_dwp_loaded_cutus (const void *a, const void *b) | |
3019eac3 | 13119 | { |
9a3c8263 SM |
13120 | const struct dwo_unit *dua = (const struct dwo_unit *) a; |
13121 | const struct dwo_unit *dub = (const struct dwo_unit *) b; | |
3019eac3 | 13122 | |
80626a55 DE |
13123 | return dua->signature == dub->signature; |
13124 | } | |
3019eac3 | 13125 | |
80626a55 | 13126 | /* Allocate a hash table for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13127 | |
80626a55 DE |
13128 | static htab_t |
13129 | allocate_dwp_loaded_cutus_table (struct objfile *objfile) | |
13130 | { | |
13131 | return htab_create_alloc_ex (3, | |
13132 | hash_dwp_loaded_cutus, | |
13133 | eq_dwp_loaded_cutus, | |
13134 | NULL, | |
13135 | &objfile->objfile_obstack, | |
13136 | hashtab_obstack_allocate, | |
13137 | dummy_obstack_deallocate); | |
13138 | } | |
3019eac3 | 13139 | |
ab5088bf DE |
13140 | /* Try to open DWP file FILE_NAME. |
13141 | The result is the bfd handle of the file. | |
13142 | If there is a problem finding or opening the file, return NULL. | |
13143 | Upon success, the canonicalized path of the file is stored in the bfd, | |
13144 | same as symfile_bfd_open. */ | |
13145 | ||
192b62ce | 13146 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
13147 | open_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
13148 | const char *file_name) | |
ab5088bf | 13149 | { |
ed2dc618 SM |
13150 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (dwarf2_per_objfile, file_name, |
13151 | 1 /*is_dwp*/, | |
192b62ce | 13152 | 1 /*search_cwd*/)); |
6ac97d4c DE |
13153 | if (abfd != NULL) |
13154 | return abfd; | |
13155 | ||
13156 | /* Work around upstream bug 15652. | |
13157 | http://sourceware.org/bugzilla/show_bug.cgi?id=15652 | |
13158 | [Whether that's a "bug" is debatable, but it is getting in our way.] | |
13159 | We have no real idea where the dwp file is, because gdb's realpath-ing | |
13160 | of the executable's path may have discarded the needed info. | |
13161 | [IWBN if the dwp file name was recorded in the executable, akin to | |
13162 | .gnu_debuglink, but that doesn't exist yet.] | |
13163 | Strip the directory from FILE_NAME and search again. */ | |
13164 | if (*debug_file_directory != '\0') | |
13165 | { | |
13166 | /* Don't implicitly search the current directory here. | |
13167 | If the user wants to search "." to handle this case, | |
13168 | it must be added to debug-file-directory. */ | |
ed2dc618 SM |
13169 | return try_open_dwop_file (dwarf2_per_objfile, |
13170 | lbasename (file_name), 1 /*is_dwp*/, | |
6ac97d4c DE |
13171 | 0 /*search_cwd*/); |
13172 | } | |
13173 | ||
13174 | return NULL; | |
ab5088bf DE |
13175 | } |
13176 | ||
80626a55 DE |
13177 | /* Initialize the use of the DWP file for the current objfile. |
13178 | By convention the name of the DWP file is ${objfile}.dwp. | |
13179 | The result is NULL if it can't be found. */ | |
a766d390 | 13180 | |
400174b1 | 13181 | static std::unique_ptr<struct dwp_file> |
ed2dc618 | 13182 | open_and_init_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
80626a55 DE |
13183 | { |
13184 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
80626a55 | 13185 | |
82bf32bc JK |
13186 | /* Try to find first .dwp for the binary file before any symbolic links |
13187 | resolving. */ | |
6c447423 DE |
13188 | |
13189 | /* If the objfile is a debug file, find the name of the real binary | |
13190 | file and get the name of dwp file from there. */ | |
d721ba37 | 13191 | std::string dwp_name; |
6c447423 DE |
13192 | if (objfile->separate_debug_objfile_backlink != NULL) |
13193 | { | |
13194 | struct objfile *backlink = objfile->separate_debug_objfile_backlink; | |
13195 | const char *backlink_basename = lbasename (backlink->original_name); | |
6c447423 | 13196 | |
d721ba37 | 13197 | dwp_name = ldirname (objfile->original_name) + SLASH_STRING + backlink_basename; |
6c447423 DE |
13198 | } |
13199 | else | |
d721ba37 PA |
13200 | dwp_name = objfile->original_name; |
13201 | ||
13202 | dwp_name += ".dwp"; | |
80626a55 | 13203 | |
ed2dc618 | 13204 | gdb_bfd_ref_ptr dbfd (open_dwp_file (dwarf2_per_objfile, dwp_name.c_str ())); |
82bf32bc JK |
13205 | if (dbfd == NULL |
13206 | && strcmp (objfile->original_name, objfile_name (objfile)) != 0) | |
13207 | { | |
13208 | /* Try to find .dwp for the binary file after gdb_realpath resolving. */ | |
d721ba37 PA |
13209 | dwp_name = objfile_name (objfile); |
13210 | dwp_name += ".dwp"; | |
ed2dc618 | 13211 | dbfd = open_dwp_file (dwarf2_per_objfile, dwp_name.c_str ()); |
82bf32bc JK |
13212 | } |
13213 | ||
80626a55 DE |
13214 | if (dbfd == NULL) |
13215 | { | |
b4f54984 | 13216 | if (dwarf_read_debug) |
d721ba37 | 13217 | fprintf_unfiltered (gdb_stdlog, "DWP file not found: %s\n", dwp_name.c_str ()); |
400174b1 | 13218 | return std::unique_ptr<dwp_file> (); |
3019eac3 | 13219 | } |
400174b1 TT |
13220 | |
13221 | const char *name = bfd_get_filename (dbfd.get ()); | |
13222 | std::unique_ptr<struct dwp_file> dwp_file | |
13223 | (new struct dwp_file (name, std::move (dbfd))); | |
c906108c | 13224 | |
80626a55 | 13225 | /* +1: section 0 is unused */ |
192b62ce | 13226 | dwp_file->num_sections = bfd_count_sections (dwp_file->dbfd) + 1; |
80626a55 DE |
13227 | dwp_file->elf_sections = |
13228 | OBSTACK_CALLOC (&objfile->objfile_obstack, | |
13229 | dwp_file->num_sections, asection *); | |
13230 | ||
400174b1 TT |
13231 | bfd_map_over_sections (dwp_file->dbfd.get (), |
13232 | dwarf2_locate_common_dwp_sections, | |
13233 | dwp_file.get ()); | |
80626a55 | 13234 | |
400174b1 TT |
13235 | dwp_file->cus = create_dwp_hash_table (dwarf2_per_objfile, dwp_file.get (), |
13236 | 0); | |
80626a55 | 13237 | |
400174b1 TT |
13238 | dwp_file->tus = create_dwp_hash_table (dwarf2_per_objfile, dwp_file.get (), |
13239 | 1); | |
80626a55 | 13240 | |
73869dc2 | 13241 | /* The DWP file version is stored in the hash table. Oh well. */ |
08302ed2 DE |
13242 | if (dwp_file->cus && dwp_file->tus |
13243 | && dwp_file->cus->version != dwp_file->tus->version) | |
73869dc2 DE |
13244 | { |
13245 | /* Technically speaking, we should try to limp along, but this is | |
fbcbc3fd | 13246 | pretty bizarre. We use pulongest here because that's the established |
4d65956b | 13247 | portability solution (e.g, we cannot use %u for uint32_t). */ |
fbcbc3fd DE |
13248 | error (_("Dwarf Error: DWP file CU version %s doesn't match" |
13249 | " TU version %s [in DWP file %s]"), | |
13250 | pulongest (dwp_file->cus->version), | |
d721ba37 | 13251 | pulongest (dwp_file->tus->version), dwp_name.c_str ()); |
73869dc2 | 13252 | } |
08302ed2 DE |
13253 | |
13254 | if (dwp_file->cus) | |
13255 | dwp_file->version = dwp_file->cus->version; | |
13256 | else if (dwp_file->tus) | |
13257 | dwp_file->version = dwp_file->tus->version; | |
13258 | else | |
13259 | dwp_file->version = 2; | |
73869dc2 DE |
13260 | |
13261 | if (dwp_file->version == 2) | |
400174b1 TT |
13262 | bfd_map_over_sections (dwp_file->dbfd.get (), |
13263 | dwarf2_locate_v2_dwp_sections, | |
13264 | dwp_file.get ()); | |
73869dc2 | 13265 | |
19ac8c2e DE |
13266 | dwp_file->loaded_cus = allocate_dwp_loaded_cutus_table (objfile); |
13267 | dwp_file->loaded_tus = allocate_dwp_loaded_cutus_table (objfile); | |
80626a55 | 13268 | |
b4f54984 | 13269 | if (dwarf_read_debug) |
80626a55 DE |
13270 | { |
13271 | fprintf_unfiltered (gdb_stdlog, "DWP file found: %s\n", dwp_file->name); | |
13272 | fprintf_unfiltered (gdb_stdlog, | |
21aa081e PA |
13273 | " %s CUs, %s TUs\n", |
13274 | pulongest (dwp_file->cus ? dwp_file->cus->nr_units : 0), | |
13275 | pulongest (dwp_file->tus ? dwp_file->tus->nr_units : 0)); | |
80626a55 DE |
13276 | } |
13277 | ||
13278 | return dwp_file; | |
3019eac3 | 13279 | } |
c906108c | 13280 | |
ab5088bf DE |
13281 | /* Wrapper around open_and_init_dwp_file, only open it once. */ |
13282 | ||
13283 | static struct dwp_file * | |
ed2dc618 | 13284 | get_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
ab5088bf DE |
13285 | { |
13286 | if (! dwarf2_per_objfile->dwp_checked) | |
13287 | { | |
ed2dc618 SM |
13288 | dwarf2_per_objfile->dwp_file |
13289 | = open_and_init_dwp_file (dwarf2_per_objfile); | |
ab5088bf DE |
13290 | dwarf2_per_objfile->dwp_checked = 1; |
13291 | } | |
400174b1 | 13292 | return dwarf2_per_objfile->dwp_file.get (); |
ab5088bf DE |
13293 | } |
13294 | ||
80626a55 DE |
13295 | /* Subroutine of lookup_dwo_comp_unit, lookup_dwo_type_unit. |
13296 | Look up the CU/TU with signature SIGNATURE, either in DWO file DWO_NAME | |
13297 | or in the DWP file for the objfile, referenced by THIS_UNIT. | |
3019eac3 | 13298 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. |
80626a55 DE |
13299 | IS_DEBUG_TYPES is non-zero if reading a TU, otherwise read a CU. |
13300 | ||
13301 | This is called, for example, when wanting to read a variable with a | |
13302 | complex location. Therefore we don't want to do file i/o for every call. | |
13303 | Therefore we don't want to look for a DWO file on every call. | |
13304 | Therefore we first see if we've already seen SIGNATURE in a DWP file, | |
13305 | then we check if we've already seen DWO_NAME, and only THEN do we check | |
13306 | for a DWO file. | |
13307 | ||
1c658ad5 | 13308 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
80626a55 | 13309 | (dwo_id mismatch or couldn't find the DWO/DWP file). */ |
debd256d | 13310 | |
3019eac3 | 13311 | static struct dwo_unit * |
80626a55 DE |
13312 | lookup_dwo_cutu (struct dwarf2_per_cu_data *this_unit, |
13313 | const char *dwo_name, const char *comp_dir, | |
13314 | ULONGEST signature, int is_debug_types) | |
3019eac3 | 13315 | { |
ed2dc618 | 13316 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_unit->dwarf2_per_objfile; |
3019eac3 | 13317 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
80626a55 DE |
13318 | const char *kind = is_debug_types ? "TU" : "CU"; |
13319 | void **dwo_file_slot; | |
3019eac3 | 13320 | struct dwo_file *dwo_file; |
80626a55 | 13321 | struct dwp_file *dwp_file; |
cb1df416 | 13322 | |
6a506a2d DE |
13323 | /* First see if there's a DWP file. |
13324 | If we have a DWP file but didn't find the DWO inside it, don't | |
13325 | look for the original DWO file. It makes gdb behave differently | |
13326 | depending on whether one is debugging in the build tree. */ | |
cf2c3c16 | 13327 | |
ed2dc618 | 13328 | dwp_file = get_dwp_file (dwarf2_per_objfile); |
80626a55 | 13329 | if (dwp_file != NULL) |
cf2c3c16 | 13330 | { |
80626a55 DE |
13331 | const struct dwp_hash_table *dwp_htab = |
13332 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
13333 | ||
13334 | if (dwp_htab != NULL) | |
13335 | { | |
13336 | struct dwo_unit *dwo_cutu = | |
ed2dc618 | 13337 | lookup_dwo_unit_in_dwp (dwarf2_per_objfile, dwp_file, comp_dir, |
57d63ce2 | 13338 | signature, is_debug_types); |
80626a55 DE |
13339 | |
13340 | if (dwo_cutu != NULL) | |
13341 | { | |
b4f54984 | 13342 | if (dwarf_read_debug) |
80626a55 DE |
13343 | { |
13344 | fprintf_unfiltered (gdb_stdlog, | |
13345 | "Virtual DWO %s %s found: @%s\n", | |
13346 | kind, hex_string (signature), | |
13347 | host_address_to_string (dwo_cutu)); | |
13348 | } | |
13349 | return dwo_cutu; | |
13350 | } | |
13351 | } | |
13352 | } | |
6a506a2d | 13353 | else |
80626a55 | 13354 | { |
6a506a2d | 13355 | /* No DWP file, look for the DWO file. */ |
80626a55 | 13356 | |
ed2dc618 SM |
13357 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
13358 | dwo_name, comp_dir); | |
6a506a2d | 13359 | if (*dwo_file_slot == NULL) |
80626a55 | 13360 | { |
6a506a2d DE |
13361 | /* Read in the file and build a table of the CUs/TUs it contains. */ |
13362 | *dwo_file_slot = open_and_init_dwo_file (this_unit, dwo_name, comp_dir); | |
19c3d4c9 | 13363 | } |
6a506a2d | 13364 | /* NOTE: This will be NULL if unable to open the file. */ |
9a3c8263 | 13365 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
3019eac3 | 13366 | |
6a506a2d | 13367 | if (dwo_file != NULL) |
19c3d4c9 | 13368 | { |
6a506a2d DE |
13369 | struct dwo_unit *dwo_cutu = NULL; |
13370 | ||
13371 | if (is_debug_types && dwo_file->tus) | |
13372 | { | |
13373 | struct dwo_unit find_dwo_cutu; | |
13374 | ||
13375 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
13376 | find_dwo_cutu.signature = signature; | |
9a3c8263 SM |
13377 | dwo_cutu |
13378 | = (struct dwo_unit *) htab_find (dwo_file->tus, &find_dwo_cutu); | |
6a506a2d | 13379 | } |
33c5cd75 | 13380 | else if (!is_debug_types && dwo_file->cus) |
80626a55 | 13381 | { |
33c5cd75 DB |
13382 | struct dwo_unit find_dwo_cutu; |
13383 | ||
13384 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
13385 | find_dwo_cutu.signature = signature; | |
13386 | dwo_cutu = (struct dwo_unit *)htab_find (dwo_file->cus, | |
13387 | &find_dwo_cutu); | |
6a506a2d DE |
13388 | } |
13389 | ||
13390 | if (dwo_cutu != NULL) | |
13391 | { | |
b4f54984 | 13392 | if (dwarf_read_debug) |
6a506a2d DE |
13393 | { |
13394 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) found: @%s\n", | |
13395 | kind, dwo_name, hex_string (signature), | |
13396 | host_address_to_string (dwo_cutu)); | |
13397 | } | |
13398 | return dwo_cutu; | |
80626a55 DE |
13399 | } |
13400 | } | |
2e276125 | 13401 | } |
9cdd5dbd | 13402 | |
80626a55 DE |
13403 | /* We didn't find it. This could mean a dwo_id mismatch, or |
13404 | someone deleted the DWO/DWP file, or the search path isn't set up | |
13405 | correctly to find the file. */ | |
13406 | ||
b4f54984 | 13407 | if (dwarf_read_debug) |
80626a55 DE |
13408 | { |
13409 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) not found\n", | |
13410 | kind, dwo_name, hex_string (signature)); | |
13411 | } | |
3019eac3 | 13412 | |
6656a72d DE |
13413 | /* This is a warning and not a complaint because it can be caused by |
13414 | pilot error (e.g., user accidentally deleting the DWO). */ | |
43942612 DE |
13415 | { |
13416 | /* Print the name of the DWP file if we looked there, helps the user | |
13417 | better diagnose the problem. */ | |
791afaa2 | 13418 | std::string dwp_text; |
43942612 DE |
13419 | |
13420 | if (dwp_file != NULL) | |
791afaa2 TT |
13421 | dwp_text = string_printf (" [in DWP file %s]", |
13422 | lbasename (dwp_file->name)); | |
43942612 | 13423 | |
9d8780f0 | 13424 | warning (_("Could not find DWO %s %s(%s)%s referenced by %s at offset %s" |
43942612 DE |
13425 | " [in module %s]"), |
13426 | kind, dwo_name, hex_string (signature), | |
791afaa2 | 13427 | dwp_text.c_str (), |
43942612 | 13428 | this_unit->is_debug_types ? "TU" : "CU", |
9d8780f0 | 13429 | sect_offset_str (this_unit->sect_off), objfile_name (objfile)); |
43942612 | 13430 | } |
3019eac3 | 13431 | return NULL; |
5fb290d7 DJ |
13432 | } |
13433 | ||
80626a55 DE |
13434 | /* Lookup the DWO CU DWO_NAME/SIGNATURE referenced from THIS_CU. |
13435 | See lookup_dwo_cutu_unit for details. */ | |
13436 | ||
13437 | static struct dwo_unit * | |
13438 | lookup_dwo_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
13439 | const char *dwo_name, const char *comp_dir, | |
13440 | ULONGEST signature) | |
13441 | { | |
13442 | return lookup_dwo_cutu (this_cu, dwo_name, comp_dir, signature, 0); | |
13443 | } | |
13444 | ||
13445 | /* Lookup the DWO TU DWO_NAME/SIGNATURE referenced from THIS_TU. | |
13446 | See lookup_dwo_cutu_unit for details. */ | |
13447 | ||
13448 | static struct dwo_unit * | |
13449 | lookup_dwo_type_unit (struct signatured_type *this_tu, | |
13450 | const char *dwo_name, const char *comp_dir) | |
13451 | { | |
13452 | return lookup_dwo_cutu (&this_tu->per_cu, dwo_name, comp_dir, this_tu->signature, 1); | |
13453 | } | |
13454 | ||
89e63ee4 DE |
13455 | /* Traversal function for queue_and_load_all_dwo_tus. */ |
13456 | ||
13457 | static int | |
13458 | queue_and_load_dwo_tu (void **slot, void *info) | |
13459 | { | |
13460 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
13461 | struct dwarf2_per_cu_data *per_cu = (struct dwarf2_per_cu_data *) info; | |
13462 | ULONGEST signature = dwo_unit->signature; | |
13463 | struct signatured_type *sig_type = | |
13464 | lookup_dwo_signatured_type (per_cu->cu, signature); | |
13465 | ||
13466 | if (sig_type != NULL) | |
13467 | { | |
13468 | struct dwarf2_per_cu_data *sig_cu = &sig_type->per_cu; | |
13469 | ||
13470 | /* We pass NULL for DEPENDENT_CU because we don't yet know if there's | |
13471 | a real dependency of PER_CU on SIG_TYPE. That is detected later | |
13472 | while processing PER_CU. */ | |
13473 | if (maybe_queue_comp_unit (NULL, sig_cu, per_cu->cu->language)) | |
13474 | load_full_type_unit (sig_cu); | |
13475 | VEC_safe_push (dwarf2_per_cu_ptr, per_cu->imported_symtabs, sig_cu); | |
13476 | } | |
13477 | ||
13478 | return 1; | |
13479 | } | |
13480 | ||
13481 | /* Queue all TUs contained in the DWO of PER_CU to be read in. | |
13482 | The DWO may have the only definition of the type, though it may not be | |
13483 | referenced anywhere in PER_CU. Thus we have to load *all* its TUs. | |
13484 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
13485 | ||
13486 | static void | |
13487 | queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *per_cu) | |
13488 | { | |
13489 | struct dwo_unit *dwo_unit; | |
13490 | struct dwo_file *dwo_file; | |
13491 | ||
13492 | gdb_assert (!per_cu->is_debug_types); | |
ed2dc618 | 13493 | gdb_assert (get_dwp_file (per_cu->dwarf2_per_objfile) == NULL); |
89e63ee4 DE |
13494 | gdb_assert (per_cu->cu != NULL); |
13495 | ||
13496 | dwo_unit = per_cu->cu->dwo_unit; | |
13497 | gdb_assert (dwo_unit != NULL); | |
13498 | ||
13499 | dwo_file = dwo_unit->dwo_file; | |
13500 | if (dwo_file->tus != NULL) | |
13501 | htab_traverse_noresize (dwo_file->tus, queue_and_load_dwo_tu, per_cu); | |
13502 | } | |
13503 | ||
3019eac3 | 13504 | /* Free all resources associated with DWO_FILE. |
5dafb3d1 | 13505 | Close the DWO file and munmap the sections. */ |
348e048f DE |
13506 | |
13507 | static void | |
5dafb3d1 | 13508 | free_dwo_file (struct dwo_file *dwo_file) |
348e048f | 13509 | { |
5c6fa7ab | 13510 | /* Note: dbfd is NULL for virtual DWO files. */ |
80626a55 | 13511 | gdb_bfd_unref (dwo_file->dbfd); |
348e048f | 13512 | |
3019eac3 DE |
13513 | VEC_free (dwarf2_section_info_def, dwo_file->sections.types); |
13514 | } | |
348e048f | 13515 | |
3019eac3 | 13516 | /* Traversal function for free_dwo_files. */ |
2ab95328 | 13517 | |
3019eac3 DE |
13518 | static int |
13519 | free_dwo_file_from_slot (void **slot, void *info) | |
13520 | { | |
13521 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
348e048f | 13522 | |
5dafb3d1 | 13523 | free_dwo_file (dwo_file); |
348e048f | 13524 | |
3019eac3 DE |
13525 | return 1; |
13526 | } | |
348e048f | 13527 | |
3019eac3 | 13528 | /* Free all resources associated with DWO_FILES. */ |
348e048f | 13529 | |
3019eac3 DE |
13530 | static void |
13531 | free_dwo_files (htab_t dwo_files, struct objfile *objfile) | |
13532 | { | |
13533 | htab_traverse_noresize (dwo_files, free_dwo_file_from_slot, objfile); | |
348e048f | 13534 | } |
3019eac3 DE |
13535 | \f |
13536 | /* Read in various DIEs. */ | |
348e048f | 13537 | |
d389af10 | 13538 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). |
3e43a32a MS |
13539 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
13540 | already referenced by DW_AT_abstract_origin from the children of the | |
13541 | current DIE. */ | |
d389af10 JK |
13542 | |
13543 | static void | |
13544 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
13545 | { | |
13546 | struct die_info *child_die; | |
791afaa2 | 13547 | sect_offset *offsetp; |
d389af10 JK |
13548 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
13549 | struct die_info *origin_die; | |
13550 | /* Iterator of the ORIGIN_DIE children. */ | |
13551 | struct die_info *origin_child_die; | |
d389af10 | 13552 | struct attribute *attr; |
cd02d79d PA |
13553 | struct dwarf2_cu *origin_cu; |
13554 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
13555 | |
13556 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13557 | if (!attr) | |
13558 | return; | |
13559 | ||
cd02d79d PA |
13560 | /* Note that following die references may follow to a die in a |
13561 | different cu. */ | |
13562 | ||
13563 | origin_cu = cu; | |
13564 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
13565 | ||
13566 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
13567 | symbols in. */ | |
13568 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
13569 | origin_cu->list_in_scope = cu->list_in_scope; | |
13570 | ||
edb3359d DJ |
13571 | if (die->tag != origin_die->tag |
13572 | && !(die->tag == DW_TAG_inlined_subroutine | |
13573 | && origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 13574 | complaint (_("DIE %s and its abstract origin %s have different tags"), |
9d8780f0 SM |
13575 | sect_offset_str (die->sect_off), |
13576 | sect_offset_str (origin_die->sect_off)); | |
d389af10 | 13577 | |
791afaa2 | 13578 | std::vector<sect_offset> offsets; |
d389af10 | 13579 | |
3ea89b92 PMR |
13580 | for (child_die = die->child; |
13581 | child_die && child_die->tag; | |
13582 | child_die = sibling_die (child_die)) | |
13583 | { | |
13584 | struct die_info *child_origin_die; | |
13585 | struct dwarf2_cu *child_origin_cu; | |
13586 | ||
13587 | /* We are trying to process concrete instance entries: | |
216f72a1 | 13588 | DW_TAG_call_site DIEs indeed have a DW_AT_abstract_origin tag, but |
3ea89b92 PMR |
13589 | it's not relevant to our analysis here. i.e. detecting DIEs that are |
13590 | present in the abstract instance but not referenced in the concrete | |
13591 | one. */ | |
216f72a1 JK |
13592 | if (child_die->tag == DW_TAG_call_site |
13593 | || child_die->tag == DW_TAG_GNU_call_site) | |
3ea89b92 PMR |
13594 | continue; |
13595 | ||
c38f313d DJ |
13596 | /* For each CHILD_DIE, find the corresponding child of |
13597 | ORIGIN_DIE. If there is more than one layer of | |
13598 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
13599 | but GCC versions at least through 4.4 generate this (GCC PR | |
13600 | 40573). */ | |
3ea89b92 PMR |
13601 | child_origin_die = child_die; |
13602 | child_origin_cu = cu; | |
c38f313d DJ |
13603 | while (1) |
13604 | { | |
cd02d79d PA |
13605 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
13606 | child_origin_cu); | |
c38f313d DJ |
13607 | if (attr == NULL) |
13608 | break; | |
cd02d79d PA |
13609 | child_origin_die = follow_die_ref (child_origin_die, attr, |
13610 | &child_origin_cu); | |
c38f313d DJ |
13611 | } |
13612 | ||
d389af10 JK |
13613 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
13614 | counterpart may exist. */ | |
c38f313d | 13615 | if (child_origin_die != child_die) |
d389af10 | 13616 | { |
edb3359d DJ |
13617 | if (child_die->tag != child_origin_die->tag |
13618 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
13619 | && child_origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 13620 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 13621 | "different tags"), |
9d8780f0 SM |
13622 | sect_offset_str (child_die->sect_off), |
13623 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 13624 | if (child_origin_die->parent != origin_die) |
b98664d3 | 13625 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 13626 | "different parents"), |
9d8780f0 SM |
13627 | sect_offset_str (child_die->sect_off), |
13628 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 13629 | else |
791afaa2 | 13630 | offsets.push_back (child_origin_die->sect_off); |
d389af10 | 13631 | } |
d389af10 | 13632 | } |
791afaa2 TT |
13633 | std::sort (offsets.begin (), offsets.end ()); |
13634 | sect_offset *offsets_end = offsets.data () + offsets.size (); | |
13635 | for (offsetp = offsets.data () + 1; offsetp < offsets_end; offsetp++) | |
9c541725 | 13636 | if (offsetp[-1] == *offsetp) |
b98664d3 | 13637 | complaint (_("Multiple children of DIE %s refer " |
9d8780f0 SM |
13638 | "to DIE %s as their abstract origin"), |
13639 | sect_offset_str (die->sect_off), sect_offset_str (*offsetp)); | |
d389af10 | 13640 | |
791afaa2 | 13641 | offsetp = offsets.data (); |
d389af10 JK |
13642 | origin_child_die = origin_die->child; |
13643 | while (origin_child_die && origin_child_die->tag) | |
13644 | { | |
13645 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 | 13646 | while (offsetp < offsets_end |
9c541725 | 13647 | && *offsetp < origin_child_die->sect_off) |
d389af10 | 13648 | offsetp++; |
b64f50a1 | 13649 | if (offsetp >= offsets_end |
9c541725 | 13650 | || *offsetp > origin_child_die->sect_off) |
d389af10 | 13651 | { |
adde2bff DE |
13652 | /* Found that ORIGIN_CHILD_DIE is really not referenced. |
13653 | Check whether we're already processing ORIGIN_CHILD_DIE. | |
13654 | This can happen with mutually referenced abstract_origins. | |
13655 | PR 16581. */ | |
13656 | if (!origin_child_die->in_process) | |
13657 | process_die (origin_child_die, origin_cu); | |
d389af10 JK |
13658 | } |
13659 | origin_child_die = sibling_die (origin_child_die); | |
13660 | } | |
cd02d79d | 13661 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
d389af10 JK |
13662 | } |
13663 | ||
c906108c | 13664 | static void |
e7c27a73 | 13665 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13666 | { |
518817b3 | 13667 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 13668 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
fe978cb0 | 13669 | struct context_stack *newobj; |
c906108c SS |
13670 | CORE_ADDR lowpc; |
13671 | CORE_ADDR highpc; | |
13672 | struct die_info *child_die; | |
edb3359d | 13673 | struct attribute *attr, *call_line, *call_file; |
15d034d0 | 13674 | const char *name; |
e142c38c | 13675 | CORE_ADDR baseaddr; |
801e3a5b | 13676 | struct block *block; |
edb3359d | 13677 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
2f4732b0 | 13678 | std::vector<struct symbol *> template_args; |
34eaf542 | 13679 | struct template_symbol *templ_func = NULL; |
edb3359d DJ |
13680 | |
13681 | if (inlined_func) | |
13682 | { | |
13683 | /* If we do not have call site information, we can't show the | |
13684 | caller of this inlined function. That's too confusing, so | |
13685 | only use the scope for local variables. */ | |
13686 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
13687 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
13688 | if (call_line == NULL || call_file == NULL) | |
13689 | { | |
13690 | read_lexical_block_scope (die, cu); | |
13691 | return; | |
13692 | } | |
13693 | } | |
c906108c | 13694 | |
e142c38c DJ |
13695 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
13696 | ||
94af9270 | 13697 | name = dwarf2_name (die, cu); |
c906108c | 13698 | |
e8d05480 JB |
13699 | /* Ignore functions with missing or empty names. These are actually |
13700 | illegal according to the DWARF standard. */ | |
13701 | if (name == NULL) | |
13702 | { | |
b98664d3 | 13703 | complaint (_("missing name for subprogram DIE at %s"), |
9d8780f0 | 13704 | sect_offset_str (die->sect_off)); |
e8d05480 JB |
13705 | return; |
13706 | } | |
13707 | ||
13708 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
3a2b436a | 13709 | if (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL) |
e385593e | 13710 | <= PC_BOUNDS_INVALID) |
e8d05480 | 13711 | { |
ae4d0c03 PM |
13712 | attr = dwarf2_attr (die, DW_AT_external, cu); |
13713 | if (!attr || !DW_UNSND (attr)) | |
b98664d3 | 13714 | complaint (_("cannot get low and high bounds " |
9d8780f0 SM |
13715 | "for subprogram DIE at %s"), |
13716 | sect_offset_str (die->sect_off)); | |
e8d05480 JB |
13717 | return; |
13718 | } | |
c906108c | 13719 | |
3e29f34a MR |
13720 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13721 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13722 | |
34eaf542 TT |
13723 | /* If we have any template arguments, then we must allocate a |
13724 | different sort of symbol. */ | |
13725 | for (child_die = die->child; child_die; child_die = sibling_die (child_die)) | |
13726 | { | |
13727 | if (child_die->tag == DW_TAG_template_type_param | |
13728 | || child_die->tag == DW_TAG_template_value_param) | |
13729 | { | |
e623cf5d | 13730 | templ_func = allocate_template_symbol (objfile); |
cf724bc9 | 13731 | templ_func->subclass = SYMBOL_TEMPLATE; |
34eaf542 TT |
13732 | break; |
13733 | } | |
13734 | } | |
13735 | ||
804d2729 | 13736 | newobj = cu->builder->push_context (0, lowpc); |
5e2db402 TT |
13737 | newobj->name = new_symbol (die, read_type_die (die, cu), cu, |
13738 | (struct symbol *) templ_func); | |
4c2df51b | 13739 | |
4cecd739 DJ |
13740 | /* If there is a location expression for DW_AT_frame_base, record |
13741 | it. */ | |
e142c38c | 13742 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 13743 | if (attr) |
fe978cb0 | 13744 | dwarf2_symbol_mark_computed (attr, newobj->name, cu, 1); |
4c2df51b | 13745 | |
63e43d3a PMR |
13746 | /* If there is a location for the static link, record it. */ |
13747 | newobj->static_link = NULL; | |
13748 | attr = dwarf2_attr (die, DW_AT_static_link, cu); | |
13749 | if (attr) | |
13750 | { | |
224c3ddb SM |
13751 | newobj->static_link |
13752 | = XOBNEW (&objfile->objfile_obstack, struct dynamic_prop); | |
63e43d3a PMR |
13753 | attr_to_dynamic_prop (attr, die, cu, newobj->static_link); |
13754 | } | |
13755 | ||
804d2729 | 13756 | cu->list_in_scope = cu->builder->get_local_symbols (); |
c906108c | 13757 | |
639d11d3 | 13758 | if (die->child != NULL) |
c906108c | 13759 | { |
639d11d3 | 13760 | child_die = die->child; |
c906108c SS |
13761 | while (child_die && child_die->tag) |
13762 | { | |
34eaf542 TT |
13763 | if (child_die->tag == DW_TAG_template_type_param |
13764 | || child_die->tag == DW_TAG_template_value_param) | |
13765 | { | |
13766 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
13767 | ||
f1078f66 | 13768 | if (arg != NULL) |
2f4732b0 | 13769 | template_args.push_back (arg); |
34eaf542 TT |
13770 | } |
13771 | else | |
13772 | process_die (child_die, cu); | |
c906108c SS |
13773 | child_die = sibling_die (child_die); |
13774 | } | |
13775 | } | |
13776 | ||
d389af10 JK |
13777 | inherit_abstract_dies (die, cu); |
13778 | ||
4a811a97 UW |
13779 | /* If we have a DW_AT_specification, we might need to import using |
13780 | directives from the context of the specification DIE. See the | |
13781 | comment in determine_prefix. */ | |
13782 | if (cu->language == language_cplus | |
13783 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
13784 | { | |
13785 | struct dwarf2_cu *spec_cu = cu; | |
13786 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
13787 | ||
13788 | while (spec_die) | |
13789 | { | |
13790 | child_die = spec_die->child; | |
13791 | while (child_die && child_die->tag) | |
13792 | { | |
13793 | if (child_die->tag == DW_TAG_imported_module) | |
13794 | process_die (child_die, spec_cu); | |
13795 | child_die = sibling_die (child_die); | |
13796 | } | |
13797 | ||
13798 | /* In some cases, GCC generates specification DIEs that | |
13799 | themselves contain DW_AT_specification attributes. */ | |
13800 | spec_die = die_specification (spec_die, &spec_cu); | |
13801 | } | |
13802 | } | |
13803 | ||
804d2729 | 13804 | struct context_stack cstk = cu->builder->pop_context (); |
c906108c | 13805 | /* Make a block for the local symbols within. */ |
804d2729 TT |
13806 | block = cu->builder->finish_block (cstk.name, cstk.old_blocks, |
13807 | cstk.static_link, lowpc, highpc); | |
801e3a5b | 13808 | |
df8a16a1 | 13809 | /* For C++, set the block's scope. */ |
45280282 IB |
13810 | if ((cu->language == language_cplus |
13811 | || cu->language == language_fortran | |
c44af4eb TT |
13812 | || cu->language == language_d |
13813 | || cu->language == language_rust) | |
4d4ec4e5 | 13814 | && cu->processing_has_namespace_info) |
195a3f6c TT |
13815 | block_set_scope (block, determine_prefix (die, cu), |
13816 | &objfile->objfile_obstack); | |
df8a16a1 | 13817 | |
801e3a5b JB |
13818 | /* If we have address ranges, record them. */ |
13819 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 13820 | |
a60f3166 | 13821 | gdbarch_make_symbol_special (gdbarch, cstk.name, objfile); |
3e29f34a | 13822 | |
34eaf542 | 13823 | /* Attach template arguments to function. */ |
2f4732b0 | 13824 | if (!template_args.empty ()) |
34eaf542 TT |
13825 | { |
13826 | gdb_assert (templ_func != NULL); | |
13827 | ||
2f4732b0 | 13828 | templ_func->n_template_arguments = template_args.size (); |
34eaf542 | 13829 | templ_func->template_arguments |
8d749320 SM |
13830 | = XOBNEWVEC (&objfile->objfile_obstack, struct symbol *, |
13831 | templ_func->n_template_arguments); | |
34eaf542 | 13832 | memcpy (templ_func->template_arguments, |
2f4732b0 | 13833 | template_args.data (), |
34eaf542 | 13834 | (templ_func->n_template_arguments * sizeof (struct symbol *))); |
3e1d3d8c TT |
13835 | |
13836 | /* Make sure that the symtab is set on the new symbols. Even | |
13837 | though they don't appear in this symtab directly, other parts | |
13838 | of gdb assume that symbols do, and this is reasonably | |
13839 | true. */ | |
8634679f | 13840 | for (symbol *sym : template_args) |
3e1d3d8c | 13841 | symbol_set_symtab (sym, symbol_symtab (templ_func)); |
34eaf542 TT |
13842 | } |
13843 | ||
208d8187 JB |
13844 | /* In C++, we can have functions nested inside functions (e.g., when |
13845 | a function declares a class that has methods). This means that | |
13846 | when we finish processing a function scope, we may need to go | |
13847 | back to building a containing block's symbol lists. */ | |
804d2729 TT |
13848 | *cu->builder->get_local_symbols () = cstk.locals; |
13849 | cu->builder->set_local_using_directives (cstk.local_using_directives); | |
208d8187 | 13850 | |
921e78cf JB |
13851 | /* If we've finished processing a top-level function, subsequent |
13852 | symbols go in the file symbol list. */ | |
804d2729 TT |
13853 | if (cu->builder->outermost_context_p ()) |
13854 | cu->list_in_scope = cu->builder->get_file_symbols (); | |
c906108c SS |
13855 | } |
13856 | ||
13857 | /* Process all the DIES contained within a lexical block scope. Start | |
13858 | a new scope, process the dies, and then close the scope. */ | |
13859 | ||
13860 | static void | |
e7c27a73 | 13861 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13862 | { |
518817b3 | 13863 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 13864 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
13865 | CORE_ADDR lowpc, highpc; |
13866 | struct die_info *child_die; | |
e142c38c DJ |
13867 | CORE_ADDR baseaddr; |
13868 | ||
13869 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
13870 | |
13871 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
13872 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
13873 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 13874 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 13875 | describe ranges. */ |
e385593e JK |
13876 | switch (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
13877 | { | |
13878 | case PC_BOUNDS_NOT_PRESENT: | |
13879 | /* DW_TAG_lexical_block has no attributes, process its children as if | |
13880 | there was no wrapping by that DW_TAG_lexical_block. | |
13881 | GCC does no longer produces such DWARF since GCC r224161. */ | |
13882 | for (child_die = die->child; | |
13883 | child_die != NULL && child_die->tag; | |
13884 | child_die = sibling_die (child_die)) | |
13885 | process_die (child_die, cu); | |
13886 | return; | |
13887 | case PC_BOUNDS_INVALID: | |
13888 | return; | |
13889 | } | |
3e29f34a MR |
13890 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13891 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13892 | |
804d2729 | 13893 | cu->builder->push_context (0, lowpc); |
639d11d3 | 13894 | if (die->child != NULL) |
c906108c | 13895 | { |
639d11d3 | 13896 | child_die = die->child; |
c906108c SS |
13897 | while (child_die && child_die->tag) |
13898 | { | |
e7c27a73 | 13899 | process_die (child_die, cu); |
c906108c SS |
13900 | child_die = sibling_die (child_die); |
13901 | } | |
13902 | } | |
3ea89b92 | 13903 | inherit_abstract_dies (die, cu); |
804d2729 | 13904 | struct context_stack cstk = cu->builder->pop_context (); |
c906108c | 13905 | |
804d2729 TT |
13906 | if (*cu->builder->get_local_symbols () != NULL |
13907 | || (*cu->builder->get_local_using_directives ()) != NULL) | |
c906108c | 13908 | { |
801e3a5b | 13909 | struct block *block |
804d2729 TT |
13910 | = cu->builder->finish_block (0, cstk.old_blocks, NULL, |
13911 | cstk.start_addr, highpc); | |
801e3a5b JB |
13912 | |
13913 | /* Note that recording ranges after traversing children, as we | |
13914 | do here, means that recording a parent's ranges entails | |
13915 | walking across all its children's ranges as they appear in | |
13916 | the address map, which is quadratic behavior. | |
13917 | ||
13918 | It would be nicer to record the parent's ranges before | |
13919 | traversing its children, simply overriding whatever you find | |
13920 | there. But since we don't even decide whether to create a | |
13921 | block until after we've traversed its children, that's hard | |
13922 | to do. */ | |
13923 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c | 13924 | } |
804d2729 TT |
13925 | *cu->builder->get_local_symbols () = cstk.locals; |
13926 | cu->builder->set_local_using_directives (cstk.local_using_directives); | |
c906108c SS |
13927 | } |
13928 | ||
216f72a1 | 13929 | /* Read in DW_TAG_call_site and insert it to CU->call_site_htab. */ |
96408a79 SA |
13930 | |
13931 | static void | |
13932 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
13933 | { | |
518817b3 | 13934 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
96408a79 SA |
13935 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
13936 | CORE_ADDR pc, baseaddr; | |
13937 | struct attribute *attr; | |
13938 | struct call_site *call_site, call_site_local; | |
13939 | void **slot; | |
13940 | int nparams; | |
13941 | struct die_info *child_die; | |
13942 | ||
13943 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
13944 | ||
216f72a1 JK |
13945 | attr = dwarf2_attr (die, DW_AT_call_return_pc, cu); |
13946 | if (attr == NULL) | |
13947 | { | |
13948 | /* This was a pre-DWARF-5 GNU extension alias | |
13949 | for DW_AT_call_return_pc. */ | |
13950 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
13951 | } | |
96408a79 SA |
13952 | if (!attr) |
13953 | { | |
b98664d3 | 13954 | complaint (_("missing DW_AT_call_return_pc for DW_TAG_call_site " |
9d8780f0 SM |
13955 | "DIE %s [in module %s]"), |
13956 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13957 | return; |
13958 | } | |
31aa7e4e | 13959 | pc = attr_value_as_address (attr) + baseaddr; |
3e29f34a | 13960 | pc = gdbarch_adjust_dwarf2_addr (gdbarch, pc); |
96408a79 SA |
13961 | |
13962 | if (cu->call_site_htab == NULL) | |
13963 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
13964 | NULL, &objfile->objfile_obstack, | |
13965 | hashtab_obstack_allocate, NULL); | |
13966 | call_site_local.pc = pc; | |
13967 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
13968 | if (*slot != NULL) | |
13969 | { | |
b98664d3 | 13970 | complaint (_("Duplicate PC %s for DW_TAG_call_site " |
9d8780f0 SM |
13971 | "DIE %s [in module %s]"), |
13972 | paddress (gdbarch, pc), sect_offset_str (die->sect_off), | |
4262abfb | 13973 | objfile_name (objfile)); |
96408a79 SA |
13974 | return; |
13975 | } | |
13976 | ||
13977 | /* Count parameters at the caller. */ | |
13978 | ||
13979 | nparams = 0; | |
13980 | for (child_die = die->child; child_die && child_die->tag; | |
13981 | child_die = sibling_die (child_die)) | |
13982 | { | |
216f72a1 JK |
13983 | if (child_die->tag != DW_TAG_call_site_parameter |
13984 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 | 13985 | { |
b98664d3 | 13986 | complaint (_("Tag %d is not DW_TAG_call_site_parameter in " |
9d8780f0 SM |
13987 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13988 | child_die->tag, sect_offset_str (child_die->sect_off), | |
4262abfb | 13989 | objfile_name (objfile)); |
96408a79 SA |
13990 | continue; |
13991 | } | |
13992 | ||
13993 | nparams++; | |
13994 | } | |
13995 | ||
224c3ddb SM |
13996 | call_site |
13997 | = ((struct call_site *) | |
13998 | obstack_alloc (&objfile->objfile_obstack, | |
13999 | sizeof (*call_site) | |
14000 | + (sizeof (*call_site->parameter) * (nparams - 1)))); | |
96408a79 SA |
14001 | *slot = call_site; |
14002 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
14003 | call_site->pc = pc; | |
14004 | ||
216f72a1 JK |
14005 | if (dwarf2_flag_true_p (die, DW_AT_call_tail_call, cu) |
14006 | || dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
96408a79 SA |
14007 | { |
14008 | struct die_info *func_die; | |
14009 | ||
14010 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
14011 | for (func_die = die->parent; | |
14012 | func_die && func_die->tag != DW_TAG_subprogram | |
14013 | && func_die->tag != DW_TAG_subroutine_type; | |
14014 | func_die = func_die->parent); | |
14015 | ||
216f72a1 JK |
14016 | /* DW_AT_call_all_calls is a superset |
14017 | of DW_AT_call_all_tail_calls. */ | |
96408a79 | 14018 | if (func_die |
216f72a1 | 14019 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_calls, cu) |
96408a79 | 14020 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) |
216f72a1 | 14021 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_tail_calls, cu) |
96408a79 SA |
14022 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) |
14023 | { | |
14024 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
14025 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
14026 | both the initial caller containing the real return address PC and | |
14027 | the final callee containing the current PC of a chain of tail | |
14028 | calls do not need to have the tail call list complete. But any | |
14029 | function candidate for a virtual tail call frame searched via | |
14030 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
14031 | determined unambiguously. */ | |
14032 | } | |
14033 | else | |
14034 | { | |
14035 | struct type *func_type = NULL; | |
14036 | ||
14037 | if (func_die) | |
14038 | func_type = get_die_type (func_die, cu); | |
14039 | if (func_type != NULL) | |
14040 | { | |
14041 | gdb_assert (TYPE_CODE (func_type) == TYPE_CODE_FUNC); | |
14042 | ||
14043 | /* Enlist this call site to the function. */ | |
14044 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
14045 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
14046 | } | |
14047 | else | |
b98664d3 | 14048 | complaint (_("Cannot find function owning DW_TAG_call_site " |
9d8780f0 SM |
14049 | "DIE %s [in module %s]"), |
14050 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
14051 | } |
14052 | } | |
14053 | ||
216f72a1 JK |
14054 | attr = dwarf2_attr (die, DW_AT_call_target, cu); |
14055 | if (attr == NULL) | |
14056 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
14057 | if (attr == NULL) | |
14058 | attr = dwarf2_attr (die, DW_AT_call_origin, cu); | |
96408a79 | 14059 | if (attr == NULL) |
216f72a1 JK |
14060 | { |
14061 | /* This was a pre-DWARF-5 GNU extension alias for DW_AT_call_origin. */ | |
14062 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
14063 | } | |
96408a79 SA |
14064 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); |
14065 | if (!attr || (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0)) | |
14066 | /* Keep NULL DWARF_BLOCK. */; | |
14067 | else if (attr_form_is_block (attr)) | |
14068 | { | |
14069 | struct dwarf2_locexpr_baton *dlbaton; | |
14070 | ||
8d749320 | 14071 | dlbaton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
96408a79 SA |
14072 | dlbaton->data = DW_BLOCK (attr)->data; |
14073 | dlbaton->size = DW_BLOCK (attr)->size; | |
14074 | dlbaton->per_cu = cu->per_cu; | |
14075 | ||
14076 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
14077 | } | |
7771576e | 14078 | else if (attr_form_is_ref (attr)) |
96408a79 | 14079 | { |
96408a79 SA |
14080 | struct dwarf2_cu *target_cu = cu; |
14081 | struct die_info *target_die; | |
14082 | ||
ac9ec31b | 14083 | target_die = follow_die_ref (die, attr, &target_cu); |
518817b3 | 14084 | gdb_assert (target_cu->per_cu->dwarf2_per_objfile->objfile == objfile); |
96408a79 SA |
14085 | if (die_is_declaration (target_die, target_cu)) |
14086 | { | |
7d45c7c3 | 14087 | const char *target_physname; |
9112db09 JK |
14088 | |
14089 | /* Prefer the mangled name; otherwise compute the demangled one. */ | |
73b9be8b | 14090 | target_physname = dw2_linkage_name (target_die, target_cu); |
7d45c7c3 | 14091 | if (target_physname == NULL) |
9112db09 | 14092 | target_physname = dwarf2_physname (NULL, target_die, target_cu); |
96408a79 | 14093 | if (target_physname == NULL) |
b98664d3 | 14094 | complaint (_("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
14095 | "physname, for referencing DIE %s [in module %s]"), |
14096 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 14097 | else |
7d455152 | 14098 | SET_FIELD_PHYSNAME (call_site->target, target_physname); |
96408a79 SA |
14099 | } |
14100 | else | |
14101 | { | |
14102 | CORE_ADDR lowpc; | |
14103 | ||
14104 | /* DW_AT_entry_pc should be preferred. */ | |
3a2b436a | 14105 | if (dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL) |
e385593e | 14106 | <= PC_BOUNDS_INVALID) |
b98664d3 | 14107 | complaint (_("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
14108 | "low pc, for referencing DIE %s [in module %s]"), |
14109 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 14110 | else |
3e29f34a MR |
14111 | { |
14112 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); | |
14113 | SET_FIELD_PHYSADDR (call_site->target, lowpc); | |
14114 | } | |
96408a79 SA |
14115 | } |
14116 | } | |
14117 | else | |
b98664d3 | 14118 | complaint (_("DW_TAG_call_site DW_AT_call_target is neither " |
9d8780f0 SM |
14119 | "block nor reference, for DIE %s [in module %s]"), |
14120 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
14121 | |
14122 | call_site->per_cu = cu->per_cu; | |
14123 | ||
14124 | for (child_die = die->child; | |
14125 | child_die && child_die->tag; | |
14126 | child_die = sibling_die (child_die)) | |
14127 | { | |
96408a79 | 14128 | struct call_site_parameter *parameter; |
1788b2d3 | 14129 | struct attribute *loc, *origin; |
96408a79 | 14130 | |
216f72a1 JK |
14131 | if (child_die->tag != DW_TAG_call_site_parameter |
14132 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 SA |
14133 | { |
14134 | /* Already printed the complaint above. */ | |
14135 | continue; | |
14136 | } | |
14137 | ||
14138 | gdb_assert (call_site->parameter_count < nparams); | |
14139 | parameter = &call_site->parameter[call_site->parameter_count]; | |
14140 | ||
1788b2d3 JK |
14141 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
14142 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
216f72a1 | 14143 | register is contained in DW_AT_call_value. */ |
96408a79 | 14144 | |
24c5c679 | 14145 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
216f72a1 JK |
14146 | origin = dwarf2_attr (child_die, DW_AT_call_parameter, cu); |
14147 | if (origin == NULL) | |
14148 | { | |
14149 | /* This was a pre-DWARF-5 GNU extension alias | |
14150 | for DW_AT_call_parameter. */ | |
14151 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); | |
14152 | } | |
7771576e | 14153 | if (loc == NULL && origin != NULL && attr_form_is_ref (origin)) |
1788b2d3 | 14154 | { |
1788b2d3 | 14155 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; |
9c541725 PA |
14156 | |
14157 | sect_offset sect_off | |
14158 | = (sect_offset) dwarf2_get_ref_die_offset (origin); | |
14159 | if (!offset_in_cu_p (&cu->header, sect_off)) | |
d76b7dbc JK |
14160 | { |
14161 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
14162 | binding can be done only inside one CU. Such referenced DIE | |
14163 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
b98664d3 | 14164 | complaint (_("DW_AT_call_parameter offset is not in CU for " |
9d8780f0 SM |
14165 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14166 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14167 | objfile_name (objfile)); |
d76b7dbc JK |
14168 | continue; |
14169 | } | |
9c541725 PA |
14170 | parameter->u.param_cu_off |
14171 | = (cu_offset) (sect_off - cu->header.sect_off); | |
1788b2d3 JK |
14172 | } |
14173 | else if (loc == NULL || origin != NULL || !attr_form_is_block (loc)) | |
96408a79 | 14174 | { |
b98664d3 | 14175 | complaint (_("No DW_FORM_block* DW_AT_location for " |
9d8780f0 SM |
14176 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14177 | sect_offset_str (child_die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
14178 | continue; |
14179 | } | |
24c5c679 | 14180 | else |
96408a79 | 14181 | { |
24c5c679 JK |
14182 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
14183 | (DW_BLOCK (loc)->data, &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size]); | |
14184 | if (parameter->u.dwarf_reg != -1) | |
14185 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
14186 | else if (dwarf_block_to_sp_offset (gdbarch, DW_BLOCK (loc)->data, | |
14187 | &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size], | |
14188 | ¶meter->u.fb_offset)) | |
14189 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
14190 | else | |
14191 | { | |
b98664d3 | 14192 | complaint (_("Only single DW_OP_reg or DW_OP_fbreg is supported " |
24c5c679 | 14193 | "for DW_FORM_block* DW_AT_location is supported for " |
9d8780f0 | 14194 | "DW_TAG_call_site child DIE %s " |
24c5c679 | 14195 | "[in module %s]"), |
9d8780f0 | 14196 | sect_offset_str (child_die->sect_off), |
9c541725 | 14197 | objfile_name (objfile)); |
24c5c679 JK |
14198 | continue; |
14199 | } | |
96408a79 SA |
14200 | } |
14201 | ||
216f72a1 JK |
14202 | attr = dwarf2_attr (child_die, DW_AT_call_value, cu); |
14203 | if (attr == NULL) | |
14204 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
96408a79 SA |
14205 | if (!attr_form_is_block (attr)) |
14206 | { | |
b98664d3 | 14207 | complaint (_("No DW_FORM_block* DW_AT_call_value for " |
9d8780f0 SM |
14208 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14209 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14210 | objfile_name (objfile)); |
96408a79 SA |
14211 | continue; |
14212 | } | |
14213 | parameter->value = DW_BLOCK (attr)->data; | |
14214 | parameter->value_size = DW_BLOCK (attr)->size; | |
14215 | ||
14216 | /* Parameters are not pre-cleared by memset above. */ | |
14217 | parameter->data_value = NULL; | |
14218 | parameter->data_value_size = 0; | |
14219 | call_site->parameter_count++; | |
14220 | ||
216f72a1 JK |
14221 | attr = dwarf2_attr (child_die, DW_AT_call_data_value, cu); |
14222 | if (attr == NULL) | |
14223 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
96408a79 SA |
14224 | if (attr) |
14225 | { | |
14226 | if (!attr_form_is_block (attr)) | |
b98664d3 | 14227 | complaint (_("No DW_FORM_block* DW_AT_call_data_value for " |
9d8780f0 SM |
14228 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14229 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14230 | objfile_name (objfile)); |
96408a79 SA |
14231 | else |
14232 | { | |
14233 | parameter->data_value = DW_BLOCK (attr)->data; | |
14234 | parameter->data_value_size = DW_BLOCK (attr)->size; | |
14235 | } | |
14236 | } | |
14237 | } | |
14238 | } | |
14239 | ||
71a3c369 TT |
14240 | /* Helper function for read_variable. If DIE represents a virtual |
14241 | table, then return the type of the concrete object that is | |
14242 | associated with the virtual table. Otherwise, return NULL. */ | |
14243 | ||
14244 | static struct type * | |
14245 | rust_containing_type (struct die_info *die, struct dwarf2_cu *cu) | |
14246 | { | |
14247 | struct attribute *attr = dwarf2_attr (die, DW_AT_type, cu); | |
14248 | if (attr == NULL) | |
14249 | return NULL; | |
14250 | ||
14251 | /* Find the type DIE. */ | |
14252 | struct die_info *type_die = NULL; | |
14253 | struct dwarf2_cu *type_cu = cu; | |
14254 | ||
14255 | if (attr_form_is_ref (attr)) | |
14256 | type_die = follow_die_ref (die, attr, &type_cu); | |
14257 | if (type_die == NULL) | |
14258 | return NULL; | |
14259 | ||
14260 | if (dwarf2_attr (type_die, DW_AT_containing_type, type_cu) == NULL) | |
14261 | return NULL; | |
14262 | return die_containing_type (type_die, type_cu); | |
14263 | } | |
14264 | ||
14265 | /* Read a variable (DW_TAG_variable) DIE and create a new symbol. */ | |
14266 | ||
14267 | static void | |
14268 | read_variable (struct die_info *die, struct dwarf2_cu *cu) | |
14269 | { | |
14270 | struct rust_vtable_symbol *storage = NULL; | |
14271 | ||
14272 | if (cu->language == language_rust) | |
14273 | { | |
14274 | struct type *containing_type = rust_containing_type (die, cu); | |
14275 | ||
14276 | if (containing_type != NULL) | |
14277 | { | |
518817b3 | 14278 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
71a3c369 TT |
14279 | |
14280 | storage = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
14281 | struct rust_vtable_symbol); | |
14282 | initialize_objfile_symbol (storage); | |
14283 | storage->concrete_type = containing_type; | |
cf724bc9 | 14284 | storage->subclass = SYMBOL_RUST_VTABLE; |
71a3c369 TT |
14285 | } |
14286 | } | |
14287 | ||
e4a62c65 TV |
14288 | struct symbol *res = new_symbol (die, NULL, cu, storage); |
14289 | struct attribute *abstract_origin | |
14290 | = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
14291 | struct attribute *loc = dwarf2_attr (die, DW_AT_location, cu); | |
14292 | if (res == NULL && loc && abstract_origin) | |
14293 | { | |
14294 | /* We have a variable without a name, but with a location and an abstract | |
14295 | origin. This may be a concrete instance of an abstract variable | |
14296 | referenced from an DW_OP_GNU_variable_value, so save it to find it back | |
14297 | later. */ | |
14298 | struct dwarf2_cu *origin_cu = cu; | |
14299 | struct die_info *origin_die | |
14300 | = follow_die_ref (die, abstract_origin, &origin_cu); | |
14301 | dwarf2_per_objfile *dpo = cu->per_cu->dwarf2_per_objfile; | |
14302 | dpo->abstract_to_concrete[origin_die].push_back (die); | |
14303 | } | |
71a3c369 TT |
14304 | } |
14305 | ||
43988095 JK |
14306 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET |
14307 | reading .debug_rnglists. | |
14308 | Callback's type should be: | |
14309 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
14310 | Return true if the attributes are present and valid, otherwise, | |
14311 | return false. */ | |
14312 | ||
14313 | template <typename Callback> | |
14314 | static bool | |
14315 | dwarf2_rnglists_process (unsigned offset, struct dwarf2_cu *cu, | |
14316 | Callback &&callback) | |
14317 | { | |
ed2dc618 | 14318 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 14319 | = cu->per_cu->dwarf2_per_objfile; |
ed2dc618 | 14320 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
43988095 | 14321 | bfd *obfd = objfile->obfd; |
43988095 JK |
14322 | /* Base address selection entry. */ |
14323 | CORE_ADDR base; | |
14324 | int found_base; | |
43988095 | 14325 | const gdb_byte *buffer; |
43988095 JK |
14326 | CORE_ADDR baseaddr; |
14327 | bool overflow = false; | |
14328 | ||
14329 | found_base = cu->base_known; | |
14330 | base = cu->base_address; | |
14331 | ||
14332 | dwarf2_read_section (objfile, &dwarf2_per_objfile->rnglists); | |
14333 | if (offset >= dwarf2_per_objfile->rnglists.size) | |
14334 | { | |
b98664d3 | 14335 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43988095 JK |
14336 | offset); |
14337 | return false; | |
14338 | } | |
14339 | buffer = dwarf2_per_objfile->rnglists.buffer + offset; | |
14340 | ||
14341 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
14342 | ||
14343 | while (1) | |
14344 | { | |
7814882a JK |
14345 | /* Initialize it due to a false compiler warning. */ |
14346 | CORE_ADDR range_beginning = 0, range_end = 0; | |
43988095 JK |
14347 | const gdb_byte *buf_end = (dwarf2_per_objfile->rnglists.buffer |
14348 | + dwarf2_per_objfile->rnglists.size); | |
14349 | unsigned int bytes_read; | |
14350 | ||
14351 | if (buffer == buf_end) | |
14352 | { | |
14353 | overflow = true; | |
14354 | break; | |
14355 | } | |
14356 | const auto rlet = static_cast<enum dwarf_range_list_entry>(*buffer++); | |
14357 | switch (rlet) | |
14358 | { | |
14359 | case DW_RLE_end_of_list: | |
14360 | break; | |
14361 | case DW_RLE_base_address: | |
14362 | if (buffer + cu->header.addr_size > buf_end) | |
14363 | { | |
14364 | overflow = true; | |
14365 | break; | |
14366 | } | |
14367 | base = read_address (obfd, buffer, cu, &bytes_read); | |
14368 | found_base = 1; | |
14369 | buffer += bytes_read; | |
14370 | break; | |
14371 | case DW_RLE_start_length: | |
14372 | if (buffer + cu->header.addr_size > buf_end) | |
14373 | { | |
14374 | overflow = true; | |
14375 | break; | |
14376 | } | |
14377 | range_beginning = read_address (obfd, buffer, cu, &bytes_read); | |
14378 | buffer += bytes_read; | |
14379 | range_end = (range_beginning | |
14380 | + read_unsigned_leb128 (obfd, buffer, &bytes_read)); | |
14381 | buffer += bytes_read; | |
14382 | if (buffer > buf_end) | |
14383 | { | |
14384 | overflow = true; | |
14385 | break; | |
14386 | } | |
14387 | break; | |
14388 | case DW_RLE_offset_pair: | |
14389 | range_beginning = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14390 | buffer += bytes_read; | |
14391 | if (buffer > buf_end) | |
14392 | { | |
14393 | overflow = true; | |
14394 | break; | |
14395 | } | |
14396 | range_end = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14397 | buffer += bytes_read; | |
14398 | if (buffer > buf_end) | |
14399 | { | |
14400 | overflow = true; | |
14401 | break; | |
14402 | } | |
14403 | break; | |
14404 | case DW_RLE_start_end: | |
14405 | if (buffer + 2 * cu->header.addr_size > buf_end) | |
14406 | { | |
14407 | overflow = true; | |
14408 | break; | |
14409 | } | |
14410 | range_beginning = read_address (obfd, buffer, cu, &bytes_read); | |
14411 | buffer += bytes_read; | |
14412 | range_end = read_address (obfd, buffer, cu, &bytes_read); | |
14413 | buffer += bytes_read; | |
14414 | break; | |
14415 | default: | |
b98664d3 | 14416 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
14417 | return false; |
14418 | } | |
14419 | if (rlet == DW_RLE_end_of_list || overflow) | |
14420 | break; | |
14421 | if (rlet == DW_RLE_base_address) | |
14422 | continue; | |
14423 | ||
14424 | if (!found_base) | |
14425 | { | |
14426 | /* We have no valid base address for the ranges | |
14427 | data. */ | |
b98664d3 | 14428 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
14429 | return false; |
14430 | } | |
14431 | ||
14432 | if (range_beginning > range_end) | |
14433 | { | |
14434 | /* Inverted range entries are invalid. */ | |
b98664d3 | 14435 | complaint (_("Invalid .debug_rnglists data (inverted range)")); |
43988095 JK |
14436 | return false; |
14437 | } | |
14438 | ||
14439 | /* Empty range entries have no effect. */ | |
14440 | if (range_beginning == range_end) | |
14441 | continue; | |
14442 | ||
14443 | range_beginning += base; | |
14444 | range_end += base; | |
14445 | ||
14446 | /* A not-uncommon case of bad debug info. | |
14447 | Don't pollute the addrmap with bad data. */ | |
14448 | if (range_beginning + baseaddr == 0 | |
14449 | && !dwarf2_per_objfile->has_section_at_zero) | |
14450 | { | |
b98664d3 | 14451 | complaint (_(".debug_rnglists entry has start address of zero" |
43988095 JK |
14452 | " [in module %s]"), objfile_name (objfile)); |
14453 | continue; | |
14454 | } | |
14455 | ||
14456 | callback (range_beginning, range_end); | |
14457 | } | |
14458 | ||
14459 | if (overflow) | |
14460 | { | |
b98664d3 | 14461 | complaint (_("Offset %d is not terminated " |
43988095 JK |
14462 | "for DW_AT_ranges attribute"), |
14463 | offset); | |
14464 | return false; | |
14465 | } | |
14466 | ||
14467 | return true; | |
14468 | } | |
14469 | ||
14470 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET reading .debug_ranges. | |
14471 | Callback's type should be: | |
14472 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
5f46c5a5 | 14473 | Return 1 if the attributes are present and valid, otherwise, return 0. */ |
43039443 | 14474 | |
43988095 | 14475 | template <typename Callback> |
43039443 | 14476 | static int |
5f46c5a5 | 14477 | dwarf2_ranges_process (unsigned offset, struct dwarf2_cu *cu, |
43988095 | 14478 | Callback &&callback) |
43039443 | 14479 | { |
ed2dc618 | 14480 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 14481 | = cu->per_cu->dwarf2_per_objfile; |
ed2dc618 | 14482 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
43039443 JK |
14483 | struct comp_unit_head *cu_header = &cu->header; |
14484 | bfd *obfd = objfile->obfd; | |
14485 | unsigned int addr_size = cu_header->addr_size; | |
14486 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
14487 | /* Base address selection entry. */ | |
14488 | CORE_ADDR base; | |
14489 | int found_base; | |
14490 | unsigned int dummy; | |
d521ce57 | 14491 | const gdb_byte *buffer; |
ff013f42 | 14492 | CORE_ADDR baseaddr; |
43039443 | 14493 | |
43988095 JK |
14494 | if (cu_header->version >= 5) |
14495 | return dwarf2_rnglists_process (offset, cu, callback); | |
14496 | ||
d00adf39 DE |
14497 | found_base = cu->base_known; |
14498 | base = cu->base_address; | |
43039443 | 14499 | |
be391dca | 14500 | dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges); |
dce234bc | 14501 | if (offset >= dwarf2_per_objfile->ranges.size) |
43039443 | 14502 | { |
b98664d3 | 14503 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43039443 JK |
14504 | offset); |
14505 | return 0; | |
14506 | } | |
dce234bc | 14507 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
43039443 | 14508 | |
e7030f15 | 14509 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
ff013f42 | 14510 | |
43039443 JK |
14511 | while (1) |
14512 | { | |
14513 | CORE_ADDR range_beginning, range_end; | |
14514 | ||
14515 | range_beginning = read_address (obfd, buffer, cu, &dummy); | |
14516 | buffer += addr_size; | |
14517 | range_end = read_address (obfd, buffer, cu, &dummy); | |
14518 | buffer += addr_size; | |
14519 | offset += 2 * addr_size; | |
14520 | ||
14521 | /* An end of list marker is a pair of zero addresses. */ | |
14522 | if (range_beginning == 0 && range_end == 0) | |
14523 | /* Found the end of list entry. */ | |
14524 | break; | |
14525 | ||
14526 | /* Each base address selection entry is a pair of 2 values. | |
14527 | The first is the largest possible address, the second is | |
14528 | the base address. Check for a base address here. */ | |
14529 | if ((range_beginning & mask) == mask) | |
14530 | { | |
28d2bfb9 AB |
14531 | /* If we found the largest possible address, then we already |
14532 | have the base address in range_end. */ | |
14533 | base = range_end; | |
43039443 JK |
14534 | found_base = 1; |
14535 | continue; | |
14536 | } | |
14537 | ||
14538 | if (!found_base) | |
14539 | { | |
14540 | /* We have no valid base address for the ranges | |
14541 | data. */ | |
b98664d3 | 14542 | complaint (_("Invalid .debug_ranges data (no base address)")); |
43039443 JK |
14543 | return 0; |
14544 | } | |
14545 | ||
9277c30c UW |
14546 | if (range_beginning > range_end) |
14547 | { | |
14548 | /* Inverted range entries are invalid. */ | |
b98664d3 | 14549 | complaint (_("Invalid .debug_ranges data (inverted range)")); |
9277c30c UW |
14550 | return 0; |
14551 | } | |
14552 | ||
14553 | /* Empty range entries have no effect. */ | |
14554 | if (range_beginning == range_end) | |
14555 | continue; | |
14556 | ||
43039443 JK |
14557 | range_beginning += base; |
14558 | range_end += base; | |
14559 | ||
01093045 DE |
14560 | /* A not-uncommon case of bad debug info. |
14561 | Don't pollute the addrmap with bad data. */ | |
14562 | if (range_beginning + baseaddr == 0 | |
14563 | && !dwarf2_per_objfile->has_section_at_zero) | |
14564 | { | |
b98664d3 | 14565 | complaint (_(".debug_ranges entry has start address of zero" |
4262abfb | 14566 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
14567 | continue; |
14568 | } | |
14569 | ||
5f46c5a5 JK |
14570 | callback (range_beginning, range_end); |
14571 | } | |
14572 | ||
14573 | return 1; | |
14574 | } | |
14575 | ||
14576 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. | |
14577 | Return 1 if the attributes are present and valid, otherwise, return 0. | |
14578 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
14579 | ||
14580 | static int | |
14581 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
14582 | CORE_ADDR *high_return, struct dwarf2_cu *cu, | |
14583 | struct partial_symtab *ranges_pst) | |
14584 | { | |
518817b3 | 14585 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
5f46c5a5 JK |
14586 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
14587 | const CORE_ADDR baseaddr = ANOFFSET (objfile->section_offsets, | |
14588 | SECT_OFF_TEXT (objfile)); | |
14589 | int low_set = 0; | |
14590 | CORE_ADDR low = 0; | |
14591 | CORE_ADDR high = 0; | |
14592 | int retval; | |
14593 | ||
14594 | retval = dwarf2_ranges_process (offset, cu, | |
14595 | [&] (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
14596 | { | |
9277c30c | 14597 | if (ranges_pst != NULL) |
3e29f34a MR |
14598 | { |
14599 | CORE_ADDR lowpc; | |
14600 | CORE_ADDR highpc; | |
14601 | ||
79748972 TT |
14602 | lowpc = (gdbarch_adjust_dwarf2_addr (gdbarch, |
14603 | range_beginning + baseaddr) | |
14604 | - baseaddr); | |
14605 | highpc = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
14606 | range_end + baseaddr) | |
14607 | - baseaddr); | |
3e29f34a MR |
14608 | addrmap_set_empty (objfile->psymtabs_addrmap, lowpc, highpc - 1, |
14609 | ranges_pst); | |
14610 | } | |
ff013f42 | 14611 | |
43039443 JK |
14612 | /* FIXME: This is recording everything as a low-high |
14613 | segment of consecutive addresses. We should have a | |
14614 | data structure for discontiguous block ranges | |
14615 | instead. */ | |
14616 | if (! low_set) | |
14617 | { | |
14618 | low = range_beginning; | |
14619 | high = range_end; | |
14620 | low_set = 1; | |
14621 | } | |
14622 | else | |
14623 | { | |
14624 | if (range_beginning < low) | |
14625 | low = range_beginning; | |
14626 | if (range_end > high) | |
14627 | high = range_end; | |
14628 | } | |
5f46c5a5 JK |
14629 | }); |
14630 | if (!retval) | |
14631 | return 0; | |
43039443 JK |
14632 | |
14633 | if (! low_set) | |
14634 | /* If the first entry is an end-of-list marker, the range | |
14635 | describes an empty scope, i.e. no instructions. */ | |
14636 | return 0; | |
14637 | ||
14638 | if (low_return) | |
14639 | *low_return = low; | |
14640 | if (high_return) | |
14641 | *high_return = high; | |
14642 | return 1; | |
14643 | } | |
14644 | ||
3a2b436a JK |
14645 | /* Get low and high pc attributes from a die. See enum pc_bounds_kind |
14646 | definition for the return value. *LOWPC and *HIGHPC are set iff | |
e385593e | 14647 | neither PC_BOUNDS_NOT_PRESENT nor PC_BOUNDS_INVALID are returned. */ |
380bca97 | 14648 | |
3a2b436a | 14649 | static enum pc_bounds_kind |
af34e669 | 14650 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 DJ |
14651 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
14652 | struct partial_symtab *pst) | |
c906108c | 14653 | { |
518817b3 SM |
14654 | struct dwarf2_per_objfile *dwarf2_per_objfile |
14655 | = cu->per_cu->dwarf2_per_objfile; | |
c906108c | 14656 | struct attribute *attr; |
91da1414 | 14657 | struct attribute *attr_high; |
af34e669 DJ |
14658 | CORE_ADDR low = 0; |
14659 | CORE_ADDR high = 0; | |
e385593e | 14660 | enum pc_bounds_kind ret; |
c906108c | 14661 | |
91da1414 MW |
14662 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14663 | if (attr_high) | |
af34e669 | 14664 | { |
e142c38c | 14665 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 | 14666 | if (attr) |
91da1414 | 14667 | { |
31aa7e4e JB |
14668 | low = attr_value_as_address (attr); |
14669 | high = attr_value_as_address (attr_high); | |
14670 | if (cu->header.version >= 4 && attr_form_is_constant (attr_high)) | |
14671 | high += low; | |
91da1414 | 14672 | } |
af34e669 DJ |
14673 | else |
14674 | /* Found high w/o low attribute. */ | |
e385593e | 14675 | return PC_BOUNDS_INVALID; |
af34e669 DJ |
14676 | |
14677 | /* Found consecutive range of addresses. */ | |
3a2b436a | 14678 | ret = PC_BOUNDS_HIGH_LOW; |
af34e669 | 14679 | } |
c906108c | 14680 | else |
af34e669 | 14681 | { |
e142c38c | 14682 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
14683 | if (attr != NULL) |
14684 | { | |
ab435259 DE |
14685 | /* DW_AT_ranges_base does not apply to DIEs from the DWO skeleton. |
14686 | We take advantage of the fact that DW_AT_ranges does not appear | |
14687 | in DW_TAG_compile_unit of DWO files. */ | |
14688 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
14689 | unsigned int ranges_offset = (DW_UNSND (attr) | |
14690 | + (need_ranges_base | |
14691 | ? cu->ranges_base | |
14692 | : 0)); | |
2e3cf129 | 14693 | |
af34e669 | 14694 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 14695 | .debug_ranges section. */ |
2e3cf129 | 14696 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst)) |
e385593e | 14697 | return PC_BOUNDS_INVALID; |
43039443 | 14698 | /* Found discontinuous range of addresses. */ |
3a2b436a | 14699 | ret = PC_BOUNDS_RANGES; |
af34e669 | 14700 | } |
e385593e JK |
14701 | else |
14702 | return PC_BOUNDS_NOT_PRESENT; | |
af34e669 | 14703 | } |
c906108c | 14704 | |
48fbe735 | 14705 | /* partial_die_info::read has also the strict LOW < HIGH requirement. */ |
9373cf26 | 14706 | if (high <= low) |
e385593e | 14707 | return PC_BOUNDS_INVALID; |
c906108c SS |
14708 | |
14709 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
14710 | eliminate duplicate copies of functions and vtables and such. | |
14711 | The linker will arbitrarily choose one and discard the others. | |
14712 | The AT_*_pc values for such functions refer to local labels in | |
14713 | these sections. If the section from that file was discarded, the | |
14714 | labels are not in the output, so the relocs get a value of 0. | |
14715 | If this is a discarded function, mark the pc bounds as invalid, | |
14716 | so that GDB will ignore it. */ | |
72dca2f5 | 14717 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
e385593e | 14718 | return PC_BOUNDS_INVALID; |
c906108c SS |
14719 | |
14720 | *lowpc = low; | |
96408a79 SA |
14721 | if (highpc) |
14722 | *highpc = high; | |
af34e669 | 14723 | return ret; |
c906108c SS |
14724 | } |
14725 | ||
b084d499 JB |
14726 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
14727 | its low and high PC addresses. Do nothing if these addresses could not | |
14728 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
14729 | and HIGHPC to the high address if greater than HIGHPC. */ | |
14730 | ||
14731 | static void | |
14732 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
14733 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
14734 | struct dwarf2_cu *cu) | |
14735 | { | |
14736 | CORE_ADDR low, high; | |
14737 | struct die_info *child = die->child; | |
14738 | ||
e385593e | 14739 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL) >= PC_BOUNDS_RANGES) |
b084d499 | 14740 | { |
325fac50 PA |
14741 | *lowpc = std::min (*lowpc, low); |
14742 | *highpc = std::max (*highpc, high); | |
b084d499 JB |
14743 | } |
14744 | ||
14745 | /* If the language does not allow nested subprograms (either inside | |
14746 | subprograms or lexical blocks), we're done. */ | |
14747 | if (cu->language != language_ada) | |
14748 | return; | |
6e70227d | 14749 | |
b084d499 JB |
14750 | /* Check all the children of the given DIE. If it contains nested |
14751 | subprograms, then check their pc bounds. Likewise, we need to | |
14752 | check lexical blocks as well, as they may also contain subprogram | |
14753 | definitions. */ | |
14754 | while (child && child->tag) | |
14755 | { | |
14756 | if (child->tag == DW_TAG_subprogram | |
14757 | || child->tag == DW_TAG_lexical_block) | |
14758 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
14759 | child = sibling_die (child); | |
14760 | } | |
14761 | } | |
14762 | ||
fae299cd DC |
14763 | /* Get the low and high pc's represented by the scope DIE, and store |
14764 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
14765 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
14766 | ||
14767 | static void | |
14768 | get_scope_pc_bounds (struct die_info *die, | |
14769 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
14770 | struct dwarf2_cu *cu) | |
14771 | { | |
14772 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
14773 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
14774 | CORE_ADDR current_low, current_high; | |
14775 | ||
3a2b436a | 14776 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL) |
e385593e | 14777 | >= PC_BOUNDS_RANGES) |
fae299cd DC |
14778 | { |
14779 | best_low = current_low; | |
14780 | best_high = current_high; | |
14781 | } | |
14782 | else | |
14783 | { | |
14784 | struct die_info *child = die->child; | |
14785 | ||
14786 | while (child && child->tag) | |
14787 | { | |
14788 | switch (child->tag) { | |
14789 | case DW_TAG_subprogram: | |
b084d499 | 14790 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
14791 | break; |
14792 | case DW_TAG_namespace: | |
f55ee35c | 14793 | case DW_TAG_module: |
fae299cd DC |
14794 | /* FIXME: carlton/2004-01-16: Should we do this for |
14795 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
14796 | that current GCC's always emit the DIEs corresponding | |
14797 | to definitions of methods of classes as children of a | |
14798 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
14799 | the DIEs giving the declarations, which could be | |
14800 | anywhere). But I don't see any reason why the | |
14801 | standards says that they have to be there. */ | |
14802 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
14803 | ||
14804 | if (current_low != ((CORE_ADDR) -1)) | |
14805 | { | |
325fac50 PA |
14806 | best_low = std::min (best_low, current_low); |
14807 | best_high = std::max (best_high, current_high); | |
fae299cd DC |
14808 | } |
14809 | break; | |
14810 | default: | |
0963b4bd | 14811 | /* Ignore. */ |
fae299cd DC |
14812 | break; |
14813 | } | |
14814 | ||
14815 | child = sibling_die (child); | |
14816 | } | |
14817 | } | |
14818 | ||
14819 | *lowpc = best_low; | |
14820 | *highpc = best_high; | |
14821 | } | |
14822 | ||
801e3a5b JB |
14823 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
14824 | in DIE. */ | |
380bca97 | 14825 | |
801e3a5b JB |
14826 | static void |
14827 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
14828 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
14829 | { | |
518817b3 | 14830 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 14831 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
801e3a5b | 14832 | struct attribute *attr; |
91da1414 | 14833 | struct attribute *attr_high; |
801e3a5b | 14834 | |
91da1414 MW |
14835 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14836 | if (attr_high) | |
801e3a5b | 14837 | { |
801e3a5b JB |
14838 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
14839 | if (attr) | |
14840 | { | |
31aa7e4e JB |
14841 | CORE_ADDR low = attr_value_as_address (attr); |
14842 | CORE_ADDR high = attr_value_as_address (attr_high); | |
14843 | ||
14844 | if (cu->header.version >= 4 && attr_form_is_constant (attr_high)) | |
14845 | high += low; | |
9a619af0 | 14846 | |
3e29f34a MR |
14847 | low = gdbarch_adjust_dwarf2_addr (gdbarch, low + baseaddr); |
14848 | high = gdbarch_adjust_dwarf2_addr (gdbarch, high + baseaddr); | |
804d2729 | 14849 | cu->builder->record_block_range (block, low, high - 1); |
801e3a5b JB |
14850 | } |
14851 | } | |
14852 | ||
14853 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
14854 | if (attr) | |
14855 | { | |
ab435259 DE |
14856 | /* DW_AT_ranges_base does not apply to DIEs from the DWO skeleton. |
14857 | We take advantage of the fact that DW_AT_ranges does not appear | |
14858 | in DW_TAG_compile_unit of DWO files. */ | |
14859 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
801e3a5b JB |
14860 | |
14861 | /* The value of the DW_AT_ranges attribute is the offset of the | |
14862 | address range list in the .debug_ranges section. */ | |
ab435259 DE |
14863 | unsigned long offset = (DW_UNSND (attr) |
14864 | + (need_ranges_base ? cu->ranges_base : 0)); | |
801e3a5b | 14865 | |
2d5f09ec | 14866 | std::vector<blockrange> blockvec; |
5f46c5a5 JK |
14867 | dwarf2_ranges_process (offset, cu, |
14868 | [&] (CORE_ADDR start, CORE_ADDR end) | |
14869 | { | |
58fdfd2c JK |
14870 | start += baseaddr; |
14871 | end += baseaddr; | |
5f46c5a5 JK |
14872 | start = gdbarch_adjust_dwarf2_addr (gdbarch, start); |
14873 | end = gdbarch_adjust_dwarf2_addr (gdbarch, end); | |
804d2729 | 14874 | cu->builder->record_block_range (block, start, end - 1); |
2d5f09ec | 14875 | blockvec.emplace_back (start, end); |
5f46c5a5 | 14876 | }); |
2d5f09ec KB |
14877 | |
14878 | BLOCK_RANGES(block) = make_blockranges (objfile, blockvec); | |
801e3a5b JB |
14879 | } |
14880 | } | |
14881 | ||
685b1105 JK |
14882 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
14883 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 14884 | |
685b1105 JK |
14885 | static void |
14886 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 | 14887 | { |
38360086 | 14888 | int major, minor; |
60d5a603 JK |
14889 | |
14890 | if (cu->producer == NULL) | |
14891 | { | |
14892 | /* For unknown compilers expect their behavior is DWARF version | |
14893 | compliant. | |
14894 | ||
14895 | GCC started to support .debug_types sections by -gdwarf-4 since | |
14896 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
14897 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
14898 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
14899 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 14900 | } |
b1ffba5a | 14901 | else if (producer_is_gcc (cu->producer, &major, &minor)) |
60d5a603 | 14902 | { |
38360086 MW |
14903 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); |
14904 | cu->producer_is_gcc_lt_4_3 = major < 4 || (major == 4 && minor < 3); | |
685b1105 | 14905 | } |
5230b05a | 14906 | else if (producer_is_icc (cu->producer, &major, &minor)) |
eb77c9df AB |
14907 | { |
14908 | cu->producer_is_icc = true; | |
14909 | cu->producer_is_icc_lt_14 = major < 14; | |
14910 | } | |
c258c396 JD |
14911 | else if (startswith (cu->producer, "CodeWarrior S12/L-ISA")) |
14912 | cu->producer_is_codewarrior = true; | |
685b1105 JK |
14913 | else |
14914 | { | |
14915 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
14916 | compliant. */ | |
60d5a603 JK |
14917 | } |
14918 | ||
9068261f | 14919 | cu->checked_producer = true; |
685b1105 | 14920 | } |
ba919b58 | 14921 | |
685b1105 JK |
14922 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
14923 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
14924 | during 4.6.0 experimental. */ | |
14925 | ||
9068261f | 14926 | static bool |
685b1105 JK |
14927 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) |
14928 | { | |
14929 | if (!cu->checked_producer) | |
14930 | check_producer (cu); | |
14931 | ||
14932 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
14933 | } |
14934 | ||
c258c396 JD |
14935 | |
14936 | /* Codewarrior (at least as of version 5.0.40) generates dwarf line information | |
14937 | with incorrect is_stmt attributes. */ | |
14938 | ||
14939 | static bool | |
14940 | producer_is_codewarrior (struct dwarf2_cu *cu) | |
14941 | { | |
14942 | if (!cu->checked_producer) | |
14943 | check_producer (cu); | |
14944 | ||
14945 | return cu->producer_is_codewarrior; | |
14946 | } | |
14947 | ||
60d5a603 JK |
14948 | /* Return the default accessibility type if it is not overriden by |
14949 | DW_AT_accessibility. */ | |
14950 | ||
14951 | static enum dwarf_access_attribute | |
14952 | dwarf2_default_access_attribute (struct die_info *die, struct dwarf2_cu *cu) | |
14953 | { | |
14954 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) | |
14955 | { | |
14956 | /* The default DWARF 2 accessibility for members is public, the default | |
14957 | accessibility for inheritance is private. */ | |
14958 | ||
14959 | if (die->tag != DW_TAG_inheritance) | |
14960 | return DW_ACCESS_public; | |
14961 | else | |
14962 | return DW_ACCESS_private; | |
14963 | } | |
14964 | else | |
14965 | { | |
14966 | /* DWARF 3+ defines the default accessibility a different way. The same | |
14967 | rules apply now for DW_TAG_inheritance as for the members and it only | |
14968 | depends on the container kind. */ | |
14969 | ||
14970 | if (die->parent->tag == DW_TAG_class_type) | |
14971 | return DW_ACCESS_private; | |
14972 | else | |
14973 | return DW_ACCESS_public; | |
14974 | } | |
14975 | } | |
14976 | ||
74ac6d43 TT |
14977 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
14978 | offset. If the attribute was not found return 0, otherwise return | |
14979 | 1. If it was found but could not properly be handled, set *OFFSET | |
14980 | to 0. */ | |
14981 | ||
14982 | static int | |
14983 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
14984 | LONGEST *offset) | |
14985 | { | |
14986 | struct attribute *attr; | |
14987 | ||
14988 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
14989 | if (attr != NULL) | |
14990 | { | |
14991 | *offset = 0; | |
14992 | ||
14993 | /* Note that we do not check for a section offset first here. | |
14994 | This is because DW_AT_data_member_location is new in DWARF 4, | |
14995 | so if we see it, we can assume that a constant form is really | |
14996 | a constant and not a section offset. */ | |
14997 | if (attr_form_is_constant (attr)) | |
14998 | *offset = dwarf2_get_attr_constant_value (attr, 0); | |
14999 | else if (attr_form_is_section_offset (attr)) | |
15000 | dwarf2_complex_location_expr_complaint (); | |
15001 | else if (attr_form_is_block (attr)) | |
15002 | *offset = decode_locdesc (DW_BLOCK (attr), cu); | |
15003 | else | |
15004 | dwarf2_complex_location_expr_complaint (); | |
15005 | ||
15006 | return 1; | |
15007 | } | |
15008 | ||
15009 | return 0; | |
15010 | } | |
15011 | ||
c906108c SS |
15012 | /* Add an aggregate field to the field list. */ |
15013 | ||
15014 | static void | |
107d2387 | 15015 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 15016 | struct dwarf2_cu *cu) |
6e70227d | 15017 | { |
518817b3 | 15018 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
5e2b427d | 15019 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
15020 | struct nextfield *new_field; |
15021 | struct attribute *attr; | |
15022 | struct field *fp; | |
15d034d0 | 15023 | const char *fieldname = ""; |
c906108c | 15024 | |
7d0ccb61 DJ |
15025 | if (die->tag == DW_TAG_inheritance) |
15026 | { | |
be2daae6 TT |
15027 | fip->baseclasses.emplace_back (); |
15028 | new_field = &fip->baseclasses.back (); | |
7d0ccb61 DJ |
15029 | } |
15030 | else | |
15031 | { | |
be2daae6 TT |
15032 | fip->fields.emplace_back (); |
15033 | new_field = &fip->fields.back (); | |
7d0ccb61 | 15034 | } |
be2daae6 | 15035 | |
c906108c SS |
15036 | fip->nfields++; |
15037 | ||
e142c38c | 15038 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
15039 | if (attr) |
15040 | new_field->accessibility = DW_UNSND (attr); | |
60d5a603 JK |
15041 | else |
15042 | new_field->accessibility = dwarf2_default_access_attribute (die, cu); | |
c906108c SS |
15043 | if (new_field->accessibility != DW_ACCESS_public) |
15044 | fip->non_public_fields = 1; | |
60d5a603 | 15045 | |
e142c38c | 15046 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
15047 | if (attr) |
15048 | new_field->virtuality = DW_UNSND (attr); | |
60d5a603 JK |
15049 | else |
15050 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
15051 | |
15052 | fp = &new_field->field; | |
a9a9bd0f | 15053 | |
e142c38c | 15054 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 15055 | { |
74ac6d43 TT |
15056 | LONGEST offset; |
15057 | ||
a9a9bd0f | 15058 | /* Data member other than a C++ static data member. */ |
6e70227d | 15059 | |
c906108c | 15060 | /* Get type of field. */ |
e7c27a73 | 15061 | fp->type = die_type (die, cu); |
c906108c | 15062 | |
d6a843b5 | 15063 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 15064 | |
c906108c | 15065 | /* Get bit size of field (zero if none). */ |
e142c38c | 15066 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
15067 | if (attr) |
15068 | { | |
15069 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
15070 | } | |
15071 | else | |
15072 | { | |
15073 | FIELD_BITSIZE (*fp) = 0; | |
15074 | } | |
15075 | ||
15076 | /* Get bit offset of field. */ | |
74ac6d43 TT |
15077 | if (handle_data_member_location (die, cu, &offset)) |
15078 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
e142c38c | 15079 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
15080 | if (attr) |
15081 | { | |
5e2b427d | 15082 | if (gdbarch_bits_big_endian (gdbarch)) |
c906108c SS |
15083 | { |
15084 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
15085 | additional bit offset from the MSB of the containing |
15086 | anonymous object to the MSB of the field. We don't | |
15087 | have to do anything special since we don't need to | |
15088 | know the size of the anonymous object. */ | |
f41f5e61 | 15089 | SET_FIELD_BITPOS (*fp, FIELD_BITPOS (*fp) + DW_UNSND (attr)); |
c906108c SS |
15090 | } |
15091 | else | |
15092 | { | |
15093 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
15094 | MSB of the anonymous object, subtract off the number of |
15095 | bits from the MSB of the field to the MSB of the | |
15096 | object, and then subtract off the number of bits of | |
15097 | the field itself. The result is the bit offset of | |
15098 | the LSB of the field. */ | |
c906108c SS |
15099 | int anonymous_size; |
15100 | int bit_offset = DW_UNSND (attr); | |
15101 | ||
e142c38c | 15102 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
15103 | if (attr) |
15104 | { | |
15105 | /* The size of the anonymous object containing | |
15106 | the bit field is explicit, so use the | |
15107 | indicated size (in bytes). */ | |
15108 | anonymous_size = DW_UNSND (attr); | |
15109 | } | |
15110 | else | |
15111 | { | |
15112 | /* The size of the anonymous object containing | |
15113 | the bit field must be inferred from the type | |
15114 | attribute of the data member containing the | |
15115 | bit field. */ | |
15116 | anonymous_size = TYPE_LENGTH (fp->type); | |
15117 | } | |
f41f5e61 PA |
15118 | SET_FIELD_BITPOS (*fp, |
15119 | (FIELD_BITPOS (*fp) | |
15120 | + anonymous_size * bits_per_byte | |
15121 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
15122 | } |
15123 | } | |
da5b30da AA |
15124 | attr = dwarf2_attr (die, DW_AT_data_bit_offset, cu); |
15125 | if (attr != NULL) | |
15126 | SET_FIELD_BITPOS (*fp, (FIELD_BITPOS (*fp) | |
15127 | + dwarf2_get_attr_constant_value (attr, 0))); | |
c906108c SS |
15128 | |
15129 | /* Get name of field. */ | |
39cbfefa DJ |
15130 | fieldname = dwarf2_name (die, cu); |
15131 | if (fieldname == NULL) | |
15132 | fieldname = ""; | |
d8151005 DJ |
15133 | |
15134 | /* The name is already allocated along with this objfile, so we don't | |
15135 | need to duplicate it for the type. */ | |
15136 | fp->name = fieldname; | |
c906108c SS |
15137 | |
15138 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 15139 | pointer or virtual base class pointer) to private. */ |
e142c38c | 15140 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 15141 | { |
d48cc9dd | 15142 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
15143 | new_field->accessibility = DW_ACCESS_private; |
15144 | fip->non_public_fields = 1; | |
15145 | } | |
15146 | } | |
a9a9bd0f | 15147 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 15148 | { |
a9a9bd0f DC |
15149 | /* C++ static member. */ |
15150 | ||
15151 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
15152 | is a declaration, but all versions of G++ as of this writing | |
15153 | (so through at least 3.2.1) incorrectly generate | |
15154 | DW_TAG_variable tags. */ | |
6e70227d | 15155 | |
ff355380 | 15156 | const char *physname; |
c906108c | 15157 | |
a9a9bd0f | 15158 | /* Get name of field. */ |
39cbfefa DJ |
15159 | fieldname = dwarf2_name (die, cu); |
15160 | if (fieldname == NULL) | |
c906108c SS |
15161 | return; |
15162 | ||
254e6b9e | 15163 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
15164 | if (attr |
15165 | /* Only create a symbol if this is an external value. | |
15166 | new_symbol checks this and puts the value in the global symbol | |
15167 | table, which we want. If it is not external, new_symbol | |
15168 | will try to put the value in cu->list_in_scope which is wrong. */ | |
15169 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
15170 | { |
15171 | /* A static const member, not much different than an enum as far as | |
15172 | we're concerned, except that we can support more types. */ | |
15173 | new_symbol (die, NULL, cu); | |
15174 | } | |
15175 | ||
2df3850c | 15176 | /* Get physical name. */ |
ff355380 | 15177 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 15178 | |
d8151005 DJ |
15179 | /* The name is already allocated along with this objfile, so we don't |
15180 | need to duplicate it for the type. */ | |
15181 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 15182 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 15183 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
15184 | } |
15185 | else if (die->tag == DW_TAG_inheritance) | |
15186 | { | |
74ac6d43 | 15187 | LONGEST offset; |
d4b96c9a | 15188 | |
74ac6d43 TT |
15189 | /* C++ base class field. */ |
15190 | if (handle_data_member_location (die, cu, &offset)) | |
15191 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
c906108c | 15192 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 15193 | FIELD_TYPE (*fp) = die_type (die, cu); |
a737d952 | 15194 | FIELD_NAME (*fp) = TYPE_NAME (fp->type); |
c906108c | 15195 | } |
2ddeaf8a TT |
15196 | else if (die->tag == DW_TAG_variant_part) |
15197 | { | |
15198 | /* process_structure_scope will treat this DIE as a union. */ | |
15199 | process_structure_scope (die, cu); | |
15200 | ||
15201 | /* The variant part is relative to the start of the enclosing | |
15202 | structure. */ | |
15203 | SET_FIELD_BITPOS (*fp, 0); | |
15204 | fp->type = get_die_type (die, cu); | |
15205 | fp->artificial = 1; | |
15206 | fp->name = "<<variant>>"; | |
c8c81635 TT |
15207 | |
15208 | /* Normally a DW_TAG_variant_part won't have a size, but our | |
15209 | representation requires one, so set it to the maximum of the | |
15210 | child sizes. */ | |
15211 | if (TYPE_LENGTH (fp->type) == 0) | |
15212 | { | |
15213 | unsigned max = 0; | |
15214 | for (int i = 0; i < TYPE_NFIELDS (fp->type); ++i) | |
15215 | if (TYPE_LENGTH (TYPE_FIELD_TYPE (fp->type, i)) > max) | |
15216 | max = TYPE_LENGTH (TYPE_FIELD_TYPE (fp->type, i)); | |
15217 | TYPE_LENGTH (fp->type) = max; | |
15218 | } | |
2ddeaf8a TT |
15219 | } |
15220 | else | |
15221 | gdb_assert_not_reached ("missing case in dwarf2_add_field"); | |
c906108c SS |
15222 | } |
15223 | ||
883fd55a KS |
15224 | /* Can the type given by DIE define another type? */ |
15225 | ||
15226 | static bool | |
15227 | type_can_define_types (const struct die_info *die) | |
15228 | { | |
15229 | switch (die->tag) | |
15230 | { | |
15231 | case DW_TAG_typedef: | |
15232 | case DW_TAG_class_type: | |
15233 | case DW_TAG_structure_type: | |
15234 | case DW_TAG_union_type: | |
15235 | case DW_TAG_enumeration_type: | |
15236 | return true; | |
15237 | ||
15238 | default: | |
15239 | return false; | |
15240 | } | |
15241 | } | |
15242 | ||
15243 | /* Add a type definition defined in the scope of the FIP's class. */ | |
98751a41 JK |
15244 | |
15245 | static void | |
883fd55a KS |
15246 | dwarf2_add_type_defn (struct field_info *fip, struct die_info *die, |
15247 | struct dwarf2_cu *cu) | |
6e70227d | 15248 | { |
be2daae6 TT |
15249 | struct decl_field fp; |
15250 | memset (&fp, 0, sizeof (fp)); | |
98751a41 | 15251 | |
883fd55a | 15252 | gdb_assert (type_can_define_types (die)); |
98751a41 | 15253 | |
883fd55a | 15254 | /* Get name of field. NULL is okay here, meaning an anonymous type. */ |
be2daae6 TT |
15255 | fp.name = dwarf2_name (die, cu); |
15256 | fp.type = read_type_die (die, cu); | |
98751a41 | 15257 | |
c191a687 KS |
15258 | /* Save accessibility. */ |
15259 | enum dwarf_access_attribute accessibility; | |
15260 | struct attribute *attr = dwarf2_attr (die, DW_AT_accessibility, cu); | |
15261 | if (attr != NULL) | |
15262 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); | |
15263 | else | |
15264 | accessibility = dwarf2_default_access_attribute (die, cu); | |
15265 | switch (accessibility) | |
15266 | { | |
15267 | case DW_ACCESS_public: | |
15268 | /* The assumed value if neither private nor protected. */ | |
15269 | break; | |
15270 | case DW_ACCESS_private: | |
be2daae6 | 15271 | fp.is_private = 1; |
c191a687 KS |
15272 | break; |
15273 | case DW_ACCESS_protected: | |
be2daae6 | 15274 | fp.is_protected = 1; |
c191a687 KS |
15275 | break; |
15276 | default: | |
b98664d3 | 15277 | complaint (_("Unhandled DW_AT_accessibility value (%x)"), accessibility); |
c191a687 KS |
15278 | } |
15279 | ||
883fd55a | 15280 | if (die->tag == DW_TAG_typedef) |
be2daae6 | 15281 | fip->typedef_field_list.push_back (fp); |
883fd55a | 15282 | else |
be2daae6 | 15283 | fip->nested_types_list.push_back (fp); |
98751a41 JK |
15284 | } |
15285 | ||
c906108c SS |
15286 | /* Create the vector of fields, and attach it to the type. */ |
15287 | ||
15288 | static void | |
fba45db2 | 15289 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15290 | struct dwarf2_cu *cu) |
c906108c SS |
15291 | { |
15292 | int nfields = fip->nfields; | |
15293 | ||
15294 | /* Record the field count, allocate space for the array of fields, | |
15295 | and create blank accessibility bitfields if necessary. */ | |
15296 | TYPE_NFIELDS (type) = nfields; | |
15297 | TYPE_FIELDS (type) = (struct field *) | |
be2daae6 | 15298 | TYPE_ZALLOC (type, sizeof (struct field) * nfields); |
c906108c | 15299 | |
b4ba55a1 | 15300 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
15301 | { |
15302 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15303 | ||
15304 | TYPE_FIELD_PRIVATE_BITS (type) = | |
15305 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15306 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
15307 | ||
15308 | TYPE_FIELD_PROTECTED_BITS (type) = | |
15309 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15310 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
15311 | ||
774b6a14 TT |
15312 | TYPE_FIELD_IGNORE_BITS (type) = |
15313 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15314 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
15315 | } |
15316 | ||
15317 | /* If the type has baseclasses, allocate and clear a bit vector for | |
15318 | TYPE_FIELD_VIRTUAL_BITS. */ | |
be2daae6 | 15319 | if (!fip->baseclasses.empty () && cu->language != language_ada) |
c906108c | 15320 | { |
be2daae6 | 15321 | int num_bytes = B_BYTES (fip->baseclasses.size ()); |
fe1b8b76 | 15322 | unsigned char *pointer; |
c906108c SS |
15323 | |
15324 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
224c3ddb | 15325 | pointer = (unsigned char *) TYPE_ALLOC (type, num_bytes); |
fe1b8b76 | 15326 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; |
be2daae6 TT |
15327 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->baseclasses.size ()); |
15328 | TYPE_N_BASECLASSES (type) = fip->baseclasses.size (); | |
c906108c SS |
15329 | } |
15330 | ||
2ddeaf8a TT |
15331 | if (TYPE_FLAG_DISCRIMINATED_UNION (type)) |
15332 | { | |
15333 | struct discriminant_info *di = alloc_discriminant_info (type, -1, -1); | |
15334 | ||
be2daae6 | 15335 | for (int index = 0; index < nfields; ++index) |
2ddeaf8a | 15336 | { |
be2daae6 TT |
15337 | struct nextfield &field = fip->fields[index]; |
15338 | ||
15339 | if (field.variant.is_discriminant) | |
2ddeaf8a | 15340 | di->discriminant_index = index; |
be2daae6 | 15341 | else if (field.variant.default_branch) |
2ddeaf8a TT |
15342 | di->default_index = index; |
15343 | else | |
be2daae6 | 15344 | di->discriminants[index] = field.variant.discriminant_value; |
2ddeaf8a TT |
15345 | } |
15346 | } | |
15347 | ||
be2daae6 TT |
15348 | /* Copy the saved-up fields into the field vector. */ |
15349 | for (int i = 0; i < nfields; ++i) | |
c906108c | 15350 | { |
be2daae6 TT |
15351 | struct nextfield &field |
15352 | = ((i < fip->baseclasses.size ()) ? fip->baseclasses[i] | |
15353 | : fip->fields[i - fip->baseclasses.size ()]); | |
7d0ccb61 | 15354 | |
be2daae6 TT |
15355 | TYPE_FIELD (type, i) = field.field; |
15356 | switch (field.accessibility) | |
c906108c | 15357 | { |
c5aa993b | 15358 | case DW_ACCESS_private: |
b4ba55a1 | 15359 | if (cu->language != language_ada) |
be2daae6 | 15360 | SET_TYPE_FIELD_PRIVATE (type, i); |
c5aa993b | 15361 | break; |
c906108c | 15362 | |
c5aa993b | 15363 | case DW_ACCESS_protected: |
b4ba55a1 | 15364 | if (cu->language != language_ada) |
be2daae6 | 15365 | SET_TYPE_FIELD_PROTECTED (type, i); |
c5aa993b | 15366 | break; |
c906108c | 15367 | |
c5aa993b JM |
15368 | case DW_ACCESS_public: |
15369 | break; | |
c906108c | 15370 | |
c5aa993b JM |
15371 | default: |
15372 | /* Unknown accessibility. Complain and treat it as public. */ | |
15373 | { | |
b98664d3 | 15374 | complaint (_("unsupported accessibility %d"), |
be2daae6 | 15375 | field.accessibility); |
c5aa993b JM |
15376 | } |
15377 | break; | |
c906108c | 15378 | } |
be2daae6 | 15379 | if (i < fip->baseclasses.size ()) |
c906108c | 15380 | { |
be2daae6 | 15381 | switch (field.virtuality) |
c906108c | 15382 | { |
c5aa993b JM |
15383 | case DW_VIRTUALITY_virtual: |
15384 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 15385 | if (cu->language == language_ada) |
a73c6dcd | 15386 | error (_("unexpected virtuality in component of Ada type")); |
be2daae6 | 15387 | SET_TYPE_FIELD_VIRTUAL (type, i); |
c5aa993b | 15388 | break; |
c906108c SS |
15389 | } |
15390 | } | |
c906108c SS |
15391 | } |
15392 | } | |
15393 | ||
7d27a96d TT |
15394 | /* Return true if this member function is a constructor, false |
15395 | otherwise. */ | |
15396 | ||
15397 | static int | |
15398 | dwarf2_is_constructor (struct die_info *die, struct dwarf2_cu *cu) | |
15399 | { | |
15400 | const char *fieldname; | |
fe978cb0 | 15401 | const char *type_name; |
7d27a96d TT |
15402 | int len; |
15403 | ||
15404 | if (die->parent == NULL) | |
15405 | return 0; | |
15406 | ||
15407 | if (die->parent->tag != DW_TAG_structure_type | |
15408 | && die->parent->tag != DW_TAG_union_type | |
15409 | && die->parent->tag != DW_TAG_class_type) | |
15410 | return 0; | |
15411 | ||
15412 | fieldname = dwarf2_name (die, cu); | |
fe978cb0 PA |
15413 | type_name = dwarf2_name (die->parent, cu); |
15414 | if (fieldname == NULL || type_name == NULL) | |
7d27a96d TT |
15415 | return 0; |
15416 | ||
15417 | len = strlen (fieldname); | |
fe978cb0 PA |
15418 | return (strncmp (fieldname, type_name, len) == 0 |
15419 | && (type_name[len] == '\0' || type_name[len] == '<')); | |
7d27a96d TT |
15420 | } |
15421 | ||
c906108c SS |
15422 | /* Add a member function to the proper fieldlist. */ |
15423 | ||
15424 | static void | |
107d2387 | 15425 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 15426 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 15427 | { |
518817b3 | 15428 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 15429 | struct attribute *attr; |
c906108c | 15430 | int i; |
be2daae6 | 15431 | struct fnfieldlist *flp = nullptr; |
c906108c | 15432 | struct fn_field *fnp; |
15d034d0 | 15433 | const char *fieldname; |
f792889a | 15434 | struct type *this_type; |
60d5a603 | 15435 | enum dwarf_access_attribute accessibility; |
c906108c | 15436 | |
b4ba55a1 | 15437 | if (cu->language == language_ada) |
a73c6dcd | 15438 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 15439 | |
2df3850c | 15440 | /* Get name of member function. */ |
39cbfefa DJ |
15441 | fieldname = dwarf2_name (die, cu); |
15442 | if (fieldname == NULL) | |
2df3850c | 15443 | return; |
c906108c | 15444 | |
c906108c | 15445 | /* Look up member function name in fieldlist. */ |
be2daae6 | 15446 | for (i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15447 | { |
27bfe10e | 15448 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
be2daae6 TT |
15449 | { |
15450 | flp = &fip->fnfieldlists[i]; | |
15451 | break; | |
15452 | } | |
c906108c SS |
15453 | } |
15454 | ||
be2daae6 TT |
15455 | /* Create a new fnfieldlist if necessary. */ |
15456 | if (flp == nullptr) | |
c906108c | 15457 | { |
be2daae6 TT |
15458 | fip->fnfieldlists.emplace_back (); |
15459 | flp = &fip->fnfieldlists.back (); | |
c906108c | 15460 | flp->name = fieldname; |
be2daae6 | 15461 | i = fip->fnfieldlists.size () - 1; |
c906108c SS |
15462 | } |
15463 | ||
be2daae6 TT |
15464 | /* Create a new member function field and add it to the vector of |
15465 | fnfieldlists. */ | |
15466 | flp->fnfields.emplace_back (); | |
15467 | fnp = &flp->fnfields.back (); | |
3da10d80 KS |
15468 | |
15469 | /* Delay processing of the physname until later. */ | |
9c37b5ae | 15470 | if (cu->language == language_cplus) |
be2daae6 TT |
15471 | add_to_method_list (type, i, flp->fnfields.size () - 1, fieldname, |
15472 | die, cu); | |
3da10d80 KS |
15473 | else |
15474 | { | |
1d06ead6 | 15475 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
15476 | fnp->physname = physname ? physname : ""; |
15477 | } | |
15478 | ||
c906108c | 15479 | fnp->type = alloc_type (objfile); |
f792889a DJ |
15480 | this_type = read_type_die (die, cu); |
15481 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 15482 | { |
f792889a | 15483 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 15484 | |
f792889a | 15485 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
15486 | of the method itself (TYPE_CODE_METHOD). */ |
15487 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
15488 | TYPE_TARGET_TYPE (this_type), |
15489 | TYPE_FIELDS (this_type), | |
15490 | TYPE_NFIELDS (this_type), | |
15491 | TYPE_VARARGS (this_type)); | |
c906108c SS |
15492 | |
15493 | /* Handle static member functions. | |
c5aa993b | 15494 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
15495 | member functions. G++ helps GDB by marking the first |
15496 | parameter for non-static member functions (which is the this | |
15497 | pointer) as artificial. We obtain this information from | |
15498 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 15499 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
15500 | fnp->voffset = VOFFSET_STATIC; |
15501 | } | |
15502 | else | |
b98664d3 | 15503 | complaint (_("member function type missing for '%s'"), |
3da10d80 | 15504 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
15505 | |
15506 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 15507 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 15508 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 15509 | |
3e43a32a MS |
15510 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
15511 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
15512 | |
15513 | /* Get accessibility. */ | |
e142c38c | 15514 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c | 15515 | if (attr) |
aead7601 | 15516 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); |
60d5a603 JK |
15517 | else |
15518 | accessibility = dwarf2_default_access_attribute (die, cu); | |
15519 | switch (accessibility) | |
c906108c | 15520 | { |
60d5a603 JK |
15521 | case DW_ACCESS_private: |
15522 | fnp->is_private = 1; | |
15523 | break; | |
15524 | case DW_ACCESS_protected: | |
15525 | fnp->is_protected = 1; | |
15526 | break; | |
c906108c SS |
15527 | } |
15528 | ||
b02dede2 | 15529 | /* Check for artificial methods. */ |
e142c38c | 15530 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
15531 | if (attr && DW_UNSND (attr) != 0) |
15532 | fnp->is_artificial = 1; | |
15533 | ||
7d27a96d TT |
15534 | fnp->is_constructor = dwarf2_is_constructor (die, cu); |
15535 | ||
0d564a31 | 15536 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
15537 | function. For older versions of GCC, this is an offset in the |
15538 | appropriate virtual table, as specified by DW_AT_containing_type. | |
15539 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
15540 | to the object address. */ |
15541 | ||
e142c38c | 15542 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
aec5aa8b | 15543 | if (attr) |
8e19ed76 | 15544 | { |
aec5aa8b | 15545 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 15546 | { |
aec5aa8b TT |
15547 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
15548 | { | |
15549 | /* Old-style GCC. */ | |
15550 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
15551 | } | |
15552 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
15553 | || (DW_BLOCK (attr)->size > 1 | |
15554 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
15555 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
15556 | { | |
aec5aa8b TT |
15557 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); |
15558 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
15559 | dwarf2_complex_location_expr_complaint (); | |
15560 | else | |
15561 | fnp->voffset /= cu->header.addr_size; | |
15562 | fnp->voffset += 2; | |
15563 | } | |
15564 | else | |
15565 | dwarf2_complex_location_expr_complaint (); | |
15566 | ||
15567 | if (!fnp->fcontext) | |
7e993ebf KS |
15568 | { |
15569 | /* If there is no `this' field and no DW_AT_containing_type, | |
15570 | we cannot actually find a base class context for the | |
15571 | vtable! */ | |
15572 | if (TYPE_NFIELDS (this_type) == 0 | |
15573 | || !TYPE_FIELD_ARTIFICIAL (this_type, 0)) | |
15574 | { | |
b98664d3 | 15575 | complaint (_("cannot determine context for virtual member " |
9d8780f0 SM |
15576 | "function \"%s\" (offset %s)"), |
15577 | fieldname, sect_offset_str (die->sect_off)); | |
7e993ebf KS |
15578 | } |
15579 | else | |
15580 | { | |
15581 | fnp->fcontext | |
15582 | = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
15583 | } | |
15584 | } | |
aec5aa8b | 15585 | } |
3690dd37 | 15586 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 15587 | { |
4d3c2250 | 15588 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
15589 | } |
15590 | else | |
15591 | { | |
4d3c2250 KB |
15592 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
15593 | fieldname); | |
8e19ed76 | 15594 | } |
0d564a31 | 15595 | } |
d48cc9dd DJ |
15596 | else |
15597 | { | |
15598 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
15599 | if (attr && DW_UNSND (attr)) | |
15600 | { | |
15601 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
b98664d3 | 15602 | complaint (_("Member function \"%s\" (offset %s) is virtual " |
3e43a32a | 15603 | "but the vtable offset is not specified"), |
9d8780f0 | 15604 | fieldname, sect_offset_str (die->sect_off)); |
9655fd1a | 15605 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
15606 | TYPE_CPLUS_DYNAMIC (type) = 1; |
15607 | } | |
15608 | } | |
c906108c SS |
15609 | } |
15610 | ||
15611 | /* Create the vector of member function fields, and attach it to the type. */ | |
15612 | ||
15613 | static void | |
fba45db2 | 15614 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15615 | struct dwarf2_cu *cu) |
c906108c | 15616 | { |
b4ba55a1 | 15617 | if (cu->language == language_ada) |
a73c6dcd | 15618 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 15619 | |
c906108c SS |
15620 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
15621 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
be2daae6 TT |
15622 | TYPE_ALLOC (type, |
15623 | sizeof (struct fn_fieldlist) * fip->fnfieldlists.size ()); | |
c906108c | 15624 | |
be2daae6 | 15625 | for (int i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15626 | { |
be2daae6 | 15627 | struct fnfieldlist &nf = fip->fnfieldlists[i]; |
c906108c | 15628 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); |
c906108c | 15629 | |
be2daae6 TT |
15630 | TYPE_FN_FIELDLIST_NAME (type, i) = nf.name; |
15631 | TYPE_FN_FIELDLIST_LENGTH (type, i) = nf.fnfields.size (); | |
c906108c | 15632 | fn_flp->fn_fields = (struct fn_field *) |
be2daae6 TT |
15633 | TYPE_ALLOC (type, sizeof (struct fn_field) * nf.fnfields.size ()); |
15634 | ||
15635 | for (int k = 0; k < nf.fnfields.size (); ++k) | |
15636 | fn_flp->fn_fields[k] = nf.fnfields[k]; | |
c906108c SS |
15637 | } |
15638 | ||
be2daae6 | 15639 | TYPE_NFN_FIELDS (type) = fip->fnfieldlists.size (); |
c906108c SS |
15640 | } |
15641 | ||
1168df01 JB |
15642 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
15643 | language, zero otherwise. */ | |
15644 | static int | |
15645 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
15646 | { | |
15647 | static const char vptr[] = "_vptr"; | |
15648 | ||
9c37b5ae TT |
15649 | /* Look for the C++ form of the vtable. */ |
15650 | if (startswith (name, vptr) && is_cplus_marker (name[sizeof (vptr) - 1])) | |
1168df01 JB |
15651 | return 1; |
15652 | ||
15653 | return 0; | |
15654 | } | |
15655 | ||
c0dd20ea | 15656 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
15657 | functions, with the ABI-specified layout. If TYPE describes |
15658 | such a structure, smash it into a member function type. | |
61049d3b DJ |
15659 | |
15660 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
15661 | This is GCC PR debug/28767. */ | |
c0dd20ea | 15662 | |
0b92b5bb TT |
15663 | static void |
15664 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 15665 | { |
09e2d7c7 | 15666 | struct type *pfn_type, *self_type, *new_type; |
c0dd20ea DJ |
15667 | |
15668 | /* Check for a structure with no name and two children. */ | |
0b92b5bb TT |
15669 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2) |
15670 | return; | |
c0dd20ea DJ |
15671 | |
15672 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
15673 | if (TYPE_FIELD_NAME (type, 0) == NULL |
15674 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
15675 | || TYPE_FIELD_NAME (type, 1) == NULL | |
15676 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
15677 | return; | |
c0dd20ea DJ |
15678 | |
15679 | /* Find the type of the method. */ | |
0b92b5bb | 15680 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea DJ |
15681 | if (pfn_type == NULL |
15682 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
15683 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
0b92b5bb | 15684 | return; |
c0dd20ea DJ |
15685 | |
15686 | /* Look for the "this" argument. */ | |
15687 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
15688 | if (TYPE_NFIELDS (pfn_type) == 0 | |
0b92b5bb | 15689 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
c0dd20ea | 15690 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) |
0b92b5bb | 15691 | return; |
c0dd20ea | 15692 | |
09e2d7c7 | 15693 | self_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); |
0b92b5bb | 15694 | new_type = alloc_type (objfile); |
09e2d7c7 | 15695 | smash_to_method_type (new_type, self_type, TYPE_TARGET_TYPE (pfn_type), |
c0dd20ea DJ |
15696 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), |
15697 | TYPE_VARARGS (pfn_type)); | |
0b92b5bb | 15698 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 15699 | } |
1168df01 | 15700 | |
2b4424c3 TT |
15701 | /* If the DIE has a DW_AT_alignment attribute, return its value, doing |
15702 | appropriate error checking and issuing complaints if there is a | |
15703 | problem. */ | |
15704 | ||
15705 | static ULONGEST | |
15706 | get_alignment (struct dwarf2_cu *cu, struct die_info *die) | |
15707 | { | |
15708 | struct attribute *attr = dwarf2_attr (die, DW_AT_alignment, cu); | |
15709 | ||
15710 | if (attr == nullptr) | |
15711 | return 0; | |
15712 | ||
15713 | if (!attr_form_is_constant (attr)) | |
15714 | { | |
b98664d3 | 15715 | complaint (_("DW_AT_alignment must have constant form" |
2b4424c3 TT |
15716 | " - DIE at %s [in module %s]"), |
15717 | sect_offset_str (die->sect_off), | |
15718 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15719 | return 0; | |
15720 | } | |
15721 | ||
15722 | ULONGEST align; | |
15723 | if (attr->form == DW_FORM_sdata) | |
15724 | { | |
15725 | LONGEST val = DW_SND (attr); | |
15726 | if (val < 0) | |
15727 | { | |
b98664d3 | 15728 | complaint (_("DW_AT_alignment value must not be negative" |
2b4424c3 TT |
15729 | " - DIE at %s [in module %s]"), |
15730 | sect_offset_str (die->sect_off), | |
15731 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15732 | return 0; | |
15733 | } | |
15734 | align = val; | |
15735 | } | |
15736 | else | |
15737 | align = DW_UNSND (attr); | |
15738 | ||
15739 | if (align == 0) | |
15740 | { | |
b98664d3 | 15741 | complaint (_("DW_AT_alignment value must not be zero" |
2b4424c3 TT |
15742 | " - DIE at %s [in module %s]"), |
15743 | sect_offset_str (die->sect_off), | |
15744 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15745 | return 0; | |
15746 | } | |
15747 | if ((align & (align - 1)) != 0) | |
15748 | { | |
b98664d3 | 15749 | complaint (_("DW_AT_alignment value must be a power of 2" |
2b4424c3 TT |
15750 | " - DIE at %s [in module %s]"), |
15751 | sect_offset_str (die->sect_off), | |
15752 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15753 | return 0; | |
15754 | } | |
15755 | ||
15756 | return align; | |
15757 | } | |
15758 | ||
15759 | /* If the DIE has a DW_AT_alignment attribute, use its value to set | |
15760 | the alignment for TYPE. */ | |
15761 | ||
15762 | static void | |
15763 | maybe_set_alignment (struct dwarf2_cu *cu, struct die_info *die, | |
15764 | struct type *type) | |
15765 | { | |
15766 | if (!set_type_align (type, get_alignment (cu, die))) | |
b98664d3 | 15767 | complaint (_("DW_AT_alignment value too large" |
2b4424c3 TT |
15768 | " - DIE at %s [in module %s]"), |
15769 | sect_offset_str (die->sect_off), | |
15770 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15771 | } | |
685b1105 | 15772 | |
c906108c | 15773 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
15774 | (definition) to create a type for the structure or union. Fill in |
15775 | the type's name and general properties; the members will not be | |
83655187 DE |
15776 | processed until process_structure_scope. A symbol table entry for |
15777 | the type will also not be done until process_structure_scope (assuming | |
15778 | the type has a name). | |
c906108c | 15779 | |
c767944b DJ |
15780 | NOTE: we need to call these functions regardless of whether or not the |
15781 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c | 15782 | structure or union. This gets the type entered into our set of |
83655187 | 15783 | user defined types. */ |
c906108c | 15784 | |
f792889a | 15785 | static struct type * |
134d01f1 | 15786 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 15787 | { |
518817b3 | 15788 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c SS |
15789 | struct type *type; |
15790 | struct attribute *attr; | |
15d034d0 | 15791 | const char *name; |
c906108c | 15792 | |
348e048f DE |
15793 | /* If the definition of this type lives in .debug_types, read that type. |
15794 | Don't follow DW_AT_specification though, that will take us back up | |
15795 | the chain and we want to go down. */ | |
45e58e77 | 15796 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
15797 | if (attr) |
15798 | { | |
ac9ec31b | 15799 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 15800 | |
ac9ec31b | 15801 | /* The type's CU may not be the same as CU. |
02142a6c | 15802 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
15803 | return set_die_type (die, type, cu); |
15804 | } | |
15805 | ||
c0dd20ea | 15806 | type = alloc_type (objfile); |
c906108c | 15807 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 15808 | |
39cbfefa DJ |
15809 | name = dwarf2_name (die, cu); |
15810 | if (name != NULL) | |
c906108c | 15811 | { |
987504bb | 15812 | if (cu->language == language_cplus |
c44af4eb TT |
15813 | || cu->language == language_d |
15814 | || cu->language == language_rust) | |
63d06c5c | 15815 | { |
15d034d0 | 15816 | const char *full_name = dwarf2_full_name (name, die, cu); |
3da10d80 KS |
15817 | |
15818 | /* dwarf2_full_name might have already finished building the DIE's | |
15819 | type. If so, there is no need to continue. */ | |
15820 | if (get_die_type (die, cu) != NULL) | |
15821 | return get_die_type (die, cu); | |
15822 | ||
e86ca25f | 15823 | TYPE_NAME (type) = full_name; |
63d06c5c DC |
15824 | } |
15825 | else | |
15826 | { | |
d8151005 DJ |
15827 | /* The name is already allocated along with this objfile, so |
15828 | we don't need to duplicate it for the type. */ | |
e86ca25f | 15829 | TYPE_NAME (type) = name; |
63d06c5c | 15830 | } |
c906108c SS |
15831 | } |
15832 | ||
15833 | if (die->tag == DW_TAG_structure_type) | |
15834 | { | |
15835 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
15836 | } | |
15837 | else if (die->tag == DW_TAG_union_type) | |
15838 | { | |
15839 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
15840 | } | |
2ddeaf8a TT |
15841 | else if (die->tag == DW_TAG_variant_part) |
15842 | { | |
15843 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
15844 | TYPE_FLAG_DISCRIMINATED_UNION (type) = 1; | |
15845 | } | |
c906108c SS |
15846 | else |
15847 | { | |
4753d33b | 15848 | TYPE_CODE (type) = TYPE_CODE_STRUCT; |
c906108c SS |
15849 | } |
15850 | ||
0cc2414c TT |
15851 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
15852 | TYPE_DECLARED_CLASS (type) = 1; | |
15853 | ||
e142c38c | 15854 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
15855 | if (attr) |
15856 | { | |
155bfbd3 JB |
15857 | if (attr_form_is_constant (attr)) |
15858 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
15859 | else | |
15860 | { | |
15861 | /* For the moment, dynamic type sizes are not supported | |
15862 | by GDB's struct type. The actual size is determined | |
15863 | on-demand when resolving the type of a given object, | |
15864 | so set the type's length to zero for now. Otherwise, | |
15865 | we record an expression as the length, and that expression | |
15866 | could lead to a very large value, which could eventually | |
15867 | lead to us trying to allocate that much memory when creating | |
15868 | a value of that type. */ | |
15869 | TYPE_LENGTH (type) = 0; | |
15870 | } | |
c906108c SS |
15871 | } |
15872 | else | |
15873 | { | |
15874 | TYPE_LENGTH (type) = 0; | |
15875 | } | |
15876 | ||
2b4424c3 TT |
15877 | maybe_set_alignment (cu, die, type); |
15878 | ||
5230b05a | 15879 | if (producer_is_icc_lt_14 (cu) && (TYPE_LENGTH (type) == 0)) |
685b1105 | 15880 | { |
5230b05a WT |
15881 | /* ICC<14 does not output the required DW_AT_declaration on |
15882 | incomplete types, but gives them a size of zero. */ | |
422b1cb0 | 15883 | TYPE_STUB (type) = 1; |
685b1105 JK |
15884 | } |
15885 | else | |
15886 | TYPE_STUB_SUPPORTED (type) = 1; | |
15887 | ||
dc718098 | 15888 | if (die_is_declaration (die, cu)) |
876cecd0 | 15889 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
15890 | else if (attr == NULL && die->child == NULL |
15891 | && producer_is_realview (cu->producer)) | |
15892 | /* RealView does not output the required DW_AT_declaration | |
15893 | on incomplete types. */ | |
15894 | TYPE_STUB (type) = 1; | |
dc718098 | 15895 | |
c906108c SS |
15896 | /* We need to add the type field to the die immediately so we don't |
15897 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 15898 | type within the structure itself. */ |
1c379e20 | 15899 | set_die_type (die, type, cu); |
c906108c | 15900 | |
7e314c57 JK |
15901 | /* set_die_type should be already done. */ |
15902 | set_descriptive_type (type, die, cu); | |
15903 | ||
c767944b DJ |
15904 | return type; |
15905 | } | |
15906 | ||
2ddeaf8a TT |
15907 | /* A helper for process_structure_scope that handles a single member |
15908 | DIE. */ | |
15909 | ||
15910 | static void | |
15911 | handle_struct_member_die (struct die_info *child_die, struct type *type, | |
15912 | struct field_info *fi, | |
15913 | std::vector<struct symbol *> *template_args, | |
15914 | struct dwarf2_cu *cu) | |
15915 | { | |
15916 | if (child_die->tag == DW_TAG_member | |
15917 | || child_die->tag == DW_TAG_variable | |
15918 | || child_die->tag == DW_TAG_variant_part) | |
15919 | { | |
15920 | /* NOTE: carlton/2002-11-05: A C++ static data member | |
15921 | should be a DW_TAG_member that is a declaration, but | |
15922 | all versions of G++ as of this writing (so through at | |
15923 | least 3.2.1) incorrectly generate DW_TAG_variable | |
15924 | tags for them instead. */ | |
15925 | dwarf2_add_field (fi, child_die, cu); | |
15926 | } | |
15927 | else if (child_die->tag == DW_TAG_subprogram) | |
15928 | { | |
15929 | /* Rust doesn't have member functions in the C++ sense. | |
15930 | However, it does emit ordinary functions as children | |
15931 | of a struct DIE. */ | |
15932 | if (cu->language == language_rust) | |
15933 | read_func_scope (child_die, cu); | |
15934 | else | |
15935 | { | |
15936 | /* C++ member function. */ | |
15937 | dwarf2_add_member_fn (fi, child_die, type, cu); | |
15938 | } | |
15939 | } | |
15940 | else if (child_die->tag == DW_TAG_inheritance) | |
15941 | { | |
15942 | /* C++ base class field. */ | |
15943 | dwarf2_add_field (fi, child_die, cu); | |
15944 | } | |
15945 | else if (type_can_define_types (child_die)) | |
15946 | dwarf2_add_type_defn (fi, child_die, cu); | |
15947 | else if (child_die->tag == DW_TAG_template_type_param | |
15948 | || child_die->tag == DW_TAG_template_value_param) | |
15949 | { | |
15950 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
15951 | ||
15952 | if (arg != NULL) | |
15953 | template_args->push_back (arg); | |
15954 | } | |
15955 | else if (child_die->tag == DW_TAG_variant) | |
15956 | { | |
15957 | /* In a variant we want to get the discriminant and also add a | |
15958 | field for our sole member child. */ | |
15959 | struct attribute *discr = dwarf2_attr (child_die, DW_AT_discr_value, cu); | |
15960 | ||
15961 | for (struct die_info *variant_child = child_die->child; | |
15962 | variant_child != NULL; | |
15963 | variant_child = sibling_die (variant_child)) | |
15964 | { | |
15965 | if (variant_child->tag == DW_TAG_member) | |
15966 | { | |
15967 | handle_struct_member_die (variant_child, type, fi, | |
15968 | template_args, cu); | |
15969 | /* Only handle the one. */ | |
15970 | break; | |
15971 | } | |
15972 | } | |
15973 | ||
15974 | /* We don't handle this but we might as well report it if we see | |
15975 | it. */ | |
15976 | if (dwarf2_attr (child_die, DW_AT_discr_list, cu) != nullptr) | |
b98664d3 | 15977 | complaint (_("DW_AT_discr_list is not supported yet" |
2ddeaf8a TT |
15978 | " - DIE at %s [in module %s]"), |
15979 | sect_offset_str (child_die->sect_off), | |
15980 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15981 | ||
15982 | /* The first field was just added, so we can stash the | |
15983 | discriminant there. */ | |
be2daae6 | 15984 | gdb_assert (!fi->fields.empty ()); |
2ddeaf8a | 15985 | if (discr == NULL) |
be2daae6 | 15986 | fi->fields.back ().variant.default_branch = true; |
2ddeaf8a | 15987 | else |
be2daae6 | 15988 | fi->fields.back ().variant.discriminant_value = DW_UNSND (discr); |
2ddeaf8a TT |
15989 | } |
15990 | } | |
15991 | ||
c767944b DJ |
15992 | /* Finish creating a structure or union type, including filling in |
15993 | its members and creating a symbol for it. */ | |
15994 | ||
15995 | static void | |
15996 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
15997 | { | |
518817b3 | 15998 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
ca040673 | 15999 | struct die_info *child_die; |
c767944b DJ |
16000 | struct type *type; |
16001 | ||
16002 | type = get_die_type (die, cu); | |
16003 | if (type == NULL) | |
16004 | type = read_structure_type (die, cu); | |
16005 | ||
2ddeaf8a TT |
16006 | /* When reading a DW_TAG_variant_part, we need to notice when we |
16007 | read the discriminant member, so we can record it later in the | |
16008 | discriminant_info. */ | |
16009 | bool is_variant_part = TYPE_FLAG_DISCRIMINATED_UNION (type); | |
16010 | sect_offset discr_offset; | |
3e1d3d8c | 16011 | bool has_template_parameters = false; |
2ddeaf8a TT |
16012 | |
16013 | if (is_variant_part) | |
16014 | { | |
16015 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr, cu); | |
16016 | if (discr == NULL) | |
16017 | { | |
16018 | /* Maybe it's a univariant form, an extension we support. | |
16019 | In this case arrange not to check the offset. */ | |
16020 | is_variant_part = false; | |
16021 | } | |
16022 | else if (attr_form_is_ref (discr)) | |
16023 | { | |
16024 | struct dwarf2_cu *target_cu = cu; | |
16025 | struct die_info *target_die = follow_die_ref (die, discr, &target_cu); | |
16026 | ||
16027 | discr_offset = target_die->sect_off; | |
16028 | } | |
16029 | else | |
16030 | { | |
b98664d3 | 16031 | complaint (_("DW_AT_discr does not have DIE reference form" |
2ddeaf8a TT |
16032 | " - DIE at %s [in module %s]"), |
16033 | sect_offset_str (die->sect_off), | |
16034 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
16035 | is_variant_part = false; | |
16036 | } | |
16037 | } | |
16038 | ||
e142c38c | 16039 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
16040 | { |
16041 | struct field_info fi; | |
2f4732b0 | 16042 | std::vector<struct symbol *> template_args; |
c906108c | 16043 | |
639d11d3 | 16044 | child_die = die->child; |
c906108c SS |
16045 | |
16046 | while (child_die && child_die->tag) | |
16047 | { | |
2ddeaf8a | 16048 | handle_struct_member_die (child_die, type, &fi, &template_args, cu); |
34eaf542 | 16049 | |
2ddeaf8a | 16050 | if (is_variant_part && discr_offset == child_die->sect_off) |
be2daae6 | 16051 | fi.fields.back ().variant.is_discriminant = true; |
34eaf542 | 16052 | |
c906108c SS |
16053 | child_die = sibling_die (child_die); |
16054 | } | |
16055 | ||
34eaf542 | 16056 | /* Attach template arguments to type. */ |
2f4732b0 | 16057 | if (!template_args.empty ()) |
34eaf542 | 16058 | { |
3e1d3d8c | 16059 | has_template_parameters = true; |
34eaf542 | 16060 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
2f4732b0 | 16061 | TYPE_N_TEMPLATE_ARGUMENTS (type) = template_args.size (); |
34eaf542 | 16062 | TYPE_TEMPLATE_ARGUMENTS (type) |
8d749320 SM |
16063 | = XOBNEWVEC (&objfile->objfile_obstack, |
16064 | struct symbol *, | |
16065 | TYPE_N_TEMPLATE_ARGUMENTS (type)); | |
34eaf542 | 16066 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), |
2f4732b0 | 16067 | template_args.data (), |
34eaf542 TT |
16068 | (TYPE_N_TEMPLATE_ARGUMENTS (type) |
16069 | * sizeof (struct symbol *))); | |
34eaf542 TT |
16070 | } |
16071 | ||
c906108c SS |
16072 | /* Attach fields and member functions to the type. */ |
16073 | if (fi.nfields) | |
e7c27a73 | 16074 | dwarf2_attach_fields_to_type (&fi, type, cu); |
be2daae6 | 16075 | if (!fi.fnfieldlists.empty ()) |
c906108c | 16076 | { |
e7c27a73 | 16077 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 16078 | |
c5aa993b | 16079 | /* Get the type which refers to the base class (possibly this |
c906108c | 16080 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
16081 | class from the DW_AT_containing_type attribute. This use of |
16082 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 16083 | |
e142c38c | 16084 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 16085 | { |
e7c27a73 | 16086 | struct type *t = die_containing_type (die, cu); |
c906108c | 16087 | |
ae6ae975 | 16088 | set_type_vptr_basetype (type, t); |
c906108c SS |
16089 | if (type == t) |
16090 | { | |
c906108c SS |
16091 | int i; |
16092 | ||
16093 | /* Our own class provides vtbl ptr. */ | |
16094 | for (i = TYPE_NFIELDS (t) - 1; | |
16095 | i >= TYPE_N_BASECLASSES (t); | |
16096 | --i) | |
16097 | { | |
0d5cff50 | 16098 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 16099 | |
1168df01 | 16100 | if (is_vtable_name (fieldname, cu)) |
c906108c | 16101 | { |
ae6ae975 | 16102 | set_type_vptr_fieldno (type, i); |
c906108c SS |
16103 | break; |
16104 | } | |
16105 | } | |
16106 | ||
16107 | /* Complain if virtual function table field not found. */ | |
16108 | if (i < TYPE_N_BASECLASSES (t)) | |
b98664d3 | 16109 | complaint (_("virtual function table pointer " |
3e43a32a | 16110 | "not found when defining class '%s'"), |
e86ca25f | 16111 | TYPE_NAME (type) ? TYPE_NAME (type) : ""); |
c906108c SS |
16112 | } |
16113 | else | |
16114 | { | |
ae6ae975 | 16115 | set_type_vptr_fieldno (type, TYPE_VPTR_FIELDNO (t)); |
c906108c SS |
16116 | } |
16117 | } | |
f6235d4c | 16118 | else if (cu->producer |
61012eef | 16119 | && startswith (cu->producer, "IBM(R) XL C/C++ Advanced Edition")) |
f6235d4c EZ |
16120 | { |
16121 | /* The IBM XLC compiler does not provide direct indication | |
16122 | of the containing type, but the vtable pointer is | |
16123 | always named __vfp. */ | |
16124 | ||
16125 | int i; | |
16126 | ||
16127 | for (i = TYPE_NFIELDS (type) - 1; | |
16128 | i >= TYPE_N_BASECLASSES (type); | |
16129 | --i) | |
16130 | { | |
16131 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
16132 | { | |
ae6ae975 DE |
16133 | set_type_vptr_fieldno (type, i); |
16134 | set_type_vptr_basetype (type, type); | |
f6235d4c EZ |
16135 | break; |
16136 | } | |
16137 | } | |
16138 | } | |
c906108c | 16139 | } |
98751a41 JK |
16140 | |
16141 | /* Copy fi.typedef_field_list linked list elements content into the | |
16142 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
be2daae6 | 16143 | if (!fi.typedef_field_list.empty ()) |
98751a41 | 16144 | { |
be2daae6 | 16145 | int count = fi.typedef_field_list.size (); |
98751a41 | 16146 | |
a0d7a4ff | 16147 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 | 16148 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
883fd55a | 16149 | = ((struct decl_field *) |
be2daae6 TT |
16150 | TYPE_ALLOC (type, |
16151 | sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * count)); | |
16152 | TYPE_TYPEDEF_FIELD_COUNT (type) = count; | |
6e70227d | 16153 | |
be2daae6 TT |
16154 | for (int i = 0; i < fi.typedef_field_list.size (); ++i) |
16155 | TYPE_TYPEDEF_FIELD (type, i) = fi.typedef_field_list[i]; | |
98751a41 | 16156 | } |
c767944b | 16157 | |
883fd55a KS |
16158 | /* Copy fi.nested_types_list linked list elements content into the |
16159 | allocated array TYPE_NESTED_TYPES_ARRAY (type). */ | |
be2daae6 | 16160 | if (!fi.nested_types_list.empty () && cu->language != language_ada) |
883fd55a | 16161 | { |
be2daae6 | 16162 | int count = fi.nested_types_list.size (); |
883fd55a KS |
16163 | |
16164 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
16165 | TYPE_NESTED_TYPES_ARRAY (type) | |
16166 | = ((struct decl_field *) | |
be2daae6 TT |
16167 | TYPE_ALLOC (type, sizeof (struct decl_field) * count)); |
16168 | TYPE_NESTED_TYPES_COUNT (type) = count; | |
883fd55a | 16169 | |
be2daae6 TT |
16170 | for (int i = 0; i < fi.nested_types_list.size (); ++i) |
16171 | TYPE_NESTED_TYPES_FIELD (type, i) = fi.nested_types_list[i]; | |
883fd55a | 16172 | } |
c906108c | 16173 | } |
63d06c5c | 16174 | |
bb5ed363 | 16175 | quirk_gcc_member_function_pointer (type, objfile); |
c9317f21 TT |
16176 | if (cu->language == language_rust && die->tag == DW_TAG_union_type) |
16177 | cu->rust_unions.push_back (type); | |
0b92b5bb | 16178 | |
90aeadfc DC |
16179 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
16180 | snapshots) has been known to create a die giving a declaration | |
16181 | for a class that has, as a child, a die giving a definition for a | |
16182 | nested class. So we have to process our children even if the | |
16183 | current die is a declaration. Normally, of course, a declaration | |
16184 | won't have any children at all. */ | |
134d01f1 | 16185 | |
ca040673 DE |
16186 | child_die = die->child; |
16187 | ||
90aeadfc DC |
16188 | while (child_die != NULL && child_die->tag) |
16189 | { | |
16190 | if (child_die->tag == DW_TAG_member | |
16191 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
16192 | || child_die->tag == DW_TAG_inheritance |
16193 | || child_die->tag == DW_TAG_template_value_param | |
16194 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 16195 | { |
90aeadfc | 16196 | /* Do nothing. */ |
134d01f1 | 16197 | } |
90aeadfc DC |
16198 | else |
16199 | process_die (child_die, cu); | |
134d01f1 | 16200 | |
90aeadfc | 16201 | child_die = sibling_die (child_die); |
134d01f1 DJ |
16202 | } |
16203 | ||
fa4028e9 JB |
16204 | /* Do not consider external references. According to the DWARF standard, |
16205 | these DIEs are identified by the fact that they have no byte_size | |
16206 | attribute, and a declaration attribute. */ | |
16207 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
16208 | || !die_is_declaration (die, cu)) | |
3e1d3d8c TT |
16209 | { |
16210 | struct symbol *sym = new_symbol (die, type, cu); | |
16211 | ||
16212 | if (has_template_parameters) | |
16213 | { | |
16214 | /* Make sure that the symtab is set on the new symbols. | |
16215 | Even though they don't appear in this symtab directly, | |
16216 | other parts of gdb assume that symbols do, and this is | |
16217 | reasonably true. */ | |
16218 | for (int i = 0; i < TYPE_N_TEMPLATE_ARGUMENTS (type); ++i) | |
16219 | symbol_set_symtab (TYPE_TEMPLATE_ARGUMENT (type, i), | |
16220 | symbol_symtab (sym)); | |
16221 | } | |
16222 | } | |
134d01f1 DJ |
16223 | } |
16224 | ||
55426c9d JB |
16225 | /* Assuming DIE is an enumeration type, and TYPE is its associated type, |
16226 | update TYPE using some information only available in DIE's children. */ | |
16227 | ||
16228 | static void | |
16229 | update_enumeration_type_from_children (struct die_info *die, | |
16230 | struct type *type, | |
16231 | struct dwarf2_cu *cu) | |
16232 | { | |
60f7655a | 16233 | struct die_info *child_die; |
55426c9d JB |
16234 | int unsigned_enum = 1; |
16235 | int flag_enum = 1; | |
16236 | ULONGEST mask = 0; | |
55426c9d | 16237 | |
8268c778 | 16238 | auto_obstack obstack; |
55426c9d | 16239 | |
60f7655a DE |
16240 | for (child_die = die->child; |
16241 | child_die != NULL && child_die->tag; | |
16242 | child_die = sibling_die (child_die)) | |
55426c9d JB |
16243 | { |
16244 | struct attribute *attr; | |
16245 | LONGEST value; | |
16246 | const gdb_byte *bytes; | |
16247 | struct dwarf2_locexpr_baton *baton; | |
16248 | const char *name; | |
60f7655a | 16249 | |
55426c9d JB |
16250 | if (child_die->tag != DW_TAG_enumerator) |
16251 | continue; | |
16252 | ||
16253 | attr = dwarf2_attr (child_die, DW_AT_const_value, cu); | |
16254 | if (attr == NULL) | |
16255 | continue; | |
16256 | ||
16257 | name = dwarf2_name (child_die, cu); | |
16258 | if (name == NULL) | |
16259 | name = "<anonymous enumerator>"; | |
16260 | ||
16261 | dwarf2_const_value_attr (attr, type, name, &obstack, cu, | |
16262 | &value, &bytes, &baton); | |
16263 | if (value < 0) | |
16264 | { | |
16265 | unsigned_enum = 0; | |
16266 | flag_enum = 0; | |
16267 | } | |
16268 | else if ((mask & value) != 0) | |
16269 | flag_enum = 0; | |
16270 | else | |
16271 | mask |= value; | |
16272 | ||
16273 | /* If we already know that the enum type is neither unsigned, nor | |
16274 | a flag type, no need to look at the rest of the enumerates. */ | |
16275 | if (!unsigned_enum && !flag_enum) | |
16276 | break; | |
55426c9d JB |
16277 | } |
16278 | ||
16279 | if (unsigned_enum) | |
16280 | TYPE_UNSIGNED (type) = 1; | |
16281 | if (flag_enum) | |
16282 | TYPE_FLAG_ENUM (type) = 1; | |
55426c9d JB |
16283 | } |
16284 | ||
134d01f1 DJ |
16285 | /* Given a DW_AT_enumeration_type die, set its type. We do not |
16286 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 16287 | |
f792889a | 16288 | static struct type * |
134d01f1 | 16289 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16290 | { |
518817b3 | 16291 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 16292 | struct type *type; |
c906108c | 16293 | struct attribute *attr; |
0114d602 | 16294 | const char *name; |
134d01f1 | 16295 | |
348e048f DE |
16296 | /* If the definition of this type lives in .debug_types, read that type. |
16297 | Don't follow DW_AT_specification though, that will take us back up | |
16298 | the chain and we want to go down. */ | |
45e58e77 | 16299 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
16300 | if (attr) |
16301 | { | |
ac9ec31b | 16302 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 16303 | |
ac9ec31b | 16304 | /* The type's CU may not be the same as CU. |
02142a6c | 16305 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
16306 | return set_die_type (die, type, cu); |
16307 | } | |
16308 | ||
c906108c SS |
16309 | type = alloc_type (objfile); |
16310 | ||
16311 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
94af9270 | 16312 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 16313 | if (name != NULL) |
e86ca25f | 16314 | TYPE_NAME (type) = name; |
c906108c | 16315 | |
0626fc76 TT |
16316 | attr = dwarf2_attr (die, DW_AT_type, cu); |
16317 | if (attr != NULL) | |
16318 | { | |
16319 | struct type *underlying_type = die_type (die, cu); | |
16320 | ||
16321 | TYPE_TARGET_TYPE (type) = underlying_type; | |
16322 | } | |
16323 | ||
e142c38c | 16324 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
16325 | if (attr) |
16326 | { | |
16327 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16328 | } | |
16329 | else | |
16330 | { | |
16331 | TYPE_LENGTH (type) = 0; | |
16332 | } | |
16333 | ||
2b4424c3 TT |
16334 | maybe_set_alignment (cu, die, type); |
16335 | ||
137033e9 JB |
16336 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
16337 | declared as private in the package spec, and then defined only | |
16338 | inside the package body. Such types are known as Taft Amendment | |
16339 | Types. When another package uses such a type, an incomplete DIE | |
16340 | may be generated by the compiler. */ | |
02eb380e | 16341 | if (die_is_declaration (die, cu)) |
876cecd0 | 16342 | TYPE_STUB (type) = 1; |
02eb380e | 16343 | |
0626fc76 TT |
16344 | /* Finish the creation of this type by using the enum's children. |
16345 | We must call this even when the underlying type has been provided | |
16346 | so that we can determine if we're looking at a "flag" enum. */ | |
55426c9d JB |
16347 | update_enumeration_type_from_children (die, type, cu); |
16348 | ||
0626fc76 TT |
16349 | /* If this type has an underlying type that is not a stub, then we |
16350 | may use its attributes. We always use the "unsigned" attribute | |
16351 | in this situation, because ordinarily we guess whether the type | |
16352 | is unsigned -- but the guess can be wrong and the underlying type | |
16353 | can tell us the reality. However, we defer to a local size | |
16354 | attribute if one exists, because this lets the compiler override | |
16355 | the underlying type if needed. */ | |
16356 | if (TYPE_TARGET_TYPE (type) != NULL && !TYPE_STUB (TYPE_TARGET_TYPE (type))) | |
16357 | { | |
16358 | TYPE_UNSIGNED (type) = TYPE_UNSIGNED (TYPE_TARGET_TYPE (type)); | |
16359 | if (TYPE_LENGTH (type) == 0) | |
16360 | TYPE_LENGTH (type) = TYPE_LENGTH (TYPE_TARGET_TYPE (type)); | |
2b4424c3 TT |
16361 | if (TYPE_RAW_ALIGN (type) == 0 |
16362 | && TYPE_RAW_ALIGN (TYPE_TARGET_TYPE (type)) != 0) | |
16363 | set_type_align (type, TYPE_RAW_ALIGN (TYPE_TARGET_TYPE (type))); | |
0626fc76 TT |
16364 | } |
16365 | ||
3d567982 TT |
16366 | TYPE_DECLARED_CLASS (type) = dwarf2_flag_true_p (die, DW_AT_enum_class, cu); |
16367 | ||
f792889a | 16368 | return set_die_type (die, type, cu); |
134d01f1 DJ |
16369 | } |
16370 | ||
16371 | /* Given a pointer to a die which begins an enumeration, process all | |
16372 | the dies that define the members of the enumeration, and create the | |
16373 | symbol for the enumeration type. | |
16374 | ||
16375 | NOTE: We reverse the order of the element list. */ | |
16376 | ||
16377 | static void | |
16378 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
16379 | { | |
f792889a | 16380 | struct type *this_type; |
134d01f1 | 16381 | |
f792889a DJ |
16382 | this_type = get_die_type (die, cu); |
16383 | if (this_type == NULL) | |
16384 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 16385 | |
639d11d3 | 16386 | if (die->child != NULL) |
c906108c | 16387 | { |
9dc481d3 DE |
16388 | struct die_info *child_die; |
16389 | struct symbol *sym; | |
16390 | struct field *fields = NULL; | |
16391 | int num_fields = 0; | |
15d034d0 | 16392 | const char *name; |
9dc481d3 | 16393 | |
639d11d3 | 16394 | child_die = die->child; |
c906108c SS |
16395 | while (child_die && child_die->tag) |
16396 | { | |
16397 | if (child_die->tag != DW_TAG_enumerator) | |
16398 | { | |
e7c27a73 | 16399 | process_die (child_die, cu); |
c906108c SS |
16400 | } |
16401 | else | |
16402 | { | |
39cbfefa DJ |
16403 | name = dwarf2_name (child_die, cu); |
16404 | if (name) | |
c906108c | 16405 | { |
f792889a | 16406 | sym = new_symbol (child_die, this_type, cu); |
c906108c SS |
16407 | |
16408 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
16409 | { | |
16410 | fields = (struct field *) | |
16411 | xrealloc (fields, | |
16412 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 16413 | * sizeof (struct field)); |
c906108c SS |
16414 | } |
16415 | ||
3567439c | 16416 | FIELD_NAME (fields[num_fields]) = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 16417 | FIELD_TYPE (fields[num_fields]) = NULL; |
14e75d8e | 16418 | SET_FIELD_ENUMVAL (fields[num_fields], SYMBOL_VALUE (sym)); |
c906108c SS |
16419 | FIELD_BITSIZE (fields[num_fields]) = 0; |
16420 | ||
16421 | num_fields++; | |
16422 | } | |
16423 | } | |
16424 | ||
16425 | child_die = sibling_die (child_die); | |
16426 | } | |
16427 | ||
16428 | if (num_fields) | |
16429 | { | |
f792889a DJ |
16430 | TYPE_NFIELDS (this_type) = num_fields; |
16431 | TYPE_FIELDS (this_type) = (struct field *) | |
16432 | TYPE_ALLOC (this_type, sizeof (struct field) * num_fields); | |
16433 | memcpy (TYPE_FIELDS (this_type), fields, | |
c906108c | 16434 | sizeof (struct field) * num_fields); |
b8c9b27d | 16435 | xfree (fields); |
c906108c | 16436 | } |
c906108c | 16437 | } |
134d01f1 | 16438 | |
6c83ed52 TT |
16439 | /* If we are reading an enum from a .debug_types unit, and the enum |
16440 | is a declaration, and the enum is not the signatured type in the | |
16441 | unit, then we do not want to add a symbol for it. Adding a | |
16442 | symbol would in some cases obscure the true definition of the | |
16443 | enum, giving users an incomplete type when the definition is | |
16444 | actually available. Note that we do not want to do this for all | |
16445 | enums which are just declarations, because C++0x allows forward | |
16446 | enum declarations. */ | |
3019eac3 | 16447 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
16448 | && die_is_declaration (die, cu)) |
16449 | { | |
52dc124a | 16450 | struct signatured_type *sig_type; |
6c83ed52 | 16451 | |
c0f78cd4 | 16452 | sig_type = (struct signatured_type *) cu->per_cu; |
9c541725 PA |
16453 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
16454 | if (sig_type->type_offset_in_section != die->sect_off) | |
6c83ed52 TT |
16455 | return; |
16456 | } | |
16457 | ||
f792889a | 16458 | new_symbol (die, this_type, cu); |
c906108c SS |
16459 | } |
16460 | ||
16461 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
16462 | the DIE's type field. For now, this only handles one dimensional | |
16463 | arrays. */ | |
16464 | ||
f792889a | 16465 | static struct type * |
e7c27a73 | 16466 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16467 | { |
518817b3 | 16468 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 16469 | struct die_info *child_die; |
7e314c57 | 16470 | struct type *type; |
c906108c | 16471 | struct type *element_type, *range_type, *index_type; |
c906108c | 16472 | struct attribute *attr; |
15d034d0 | 16473 | const char *name; |
a405673c | 16474 | struct dynamic_prop *byte_stride_prop = NULL; |
dc53a7ad | 16475 | unsigned int bit_stride = 0; |
c906108c | 16476 | |
e7c27a73 | 16477 | element_type = die_type (die, cu); |
c906108c | 16478 | |
7e314c57 JK |
16479 | /* The die_type call above may have already set the type for this DIE. */ |
16480 | type = get_die_type (die, cu); | |
16481 | if (type) | |
16482 | return type; | |
16483 | ||
dc53a7ad JB |
16484 | attr = dwarf2_attr (die, DW_AT_byte_stride, cu); |
16485 | if (attr != NULL) | |
a405673c JB |
16486 | { |
16487 | int stride_ok; | |
16488 | ||
16489 | byte_stride_prop | |
16490 | = (struct dynamic_prop *) alloca (sizeof (struct dynamic_prop)); | |
16491 | stride_ok = attr_to_dynamic_prop (attr, die, cu, byte_stride_prop); | |
16492 | if (!stride_ok) | |
16493 | { | |
b98664d3 | 16494 | complaint (_("unable to read array DW_AT_byte_stride " |
9d8780f0 SM |
16495 | " - DIE at %s [in module %s]"), |
16496 | sect_offset_str (die->sect_off), | |
518817b3 | 16497 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
a405673c JB |
16498 | /* Ignore this attribute. We will likely not be able to print |
16499 | arrays of this type correctly, but there is little we can do | |
16500 | to help if we cannot read the attribute's value. */ | |
16501 | byte_stride_prop = NULL; | |
16502 | } | |
16503 | } | |
dc53a7ad JB |
16504 | |
16505 | attr = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
16506 | if (attr != NULL) | |
16507 | bit_stride = DW_UNSND (attr); | |
16508 | ||
c906108c SS |
16509 | /* Irix 6.2 native cc creates array types without children for |
16510 | arrays with unspecified length. */ | |
639d11d3 | 16511 | if (die->child == NULL) |
c906108c | 16512 | { |
46bf5051 | 16513 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 16514 | range_type = create_static_range_type (NULL, index_type, 0, -1); |
dc53a7ad | 16515 | type = create_array_type_with_stride (NULL, element_type, range_type, |
a405673c | 16516 | byte_stride_prop, bit_stride); |
f792889a | 16517 | return set_die_type (die, type, cu); |
c906108c SS |
16518 | } |
16519 | ||
791afaa2 | 16520 | std::vector<struct type *> range_types; |
639d11d3 | 16521 | child_die = die->child; |
c906108c SS |
16522 | while (child_die && child_die->tag) |
16523 | { | |
16524 | if (child_die->tag == DW_TAG_subrange_type) | |
16525 | { | |
f792889a | 16526 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 16527 | |
f792889a | 16528 | if (child_type != NULL) |
a02abb62 | 16529 | { |
0963b4bd MS |
16530 | /* The range type was succesfully read. Save it for the |
16531 | array type creation. */ | |
791afaa2 | 16532 | range_types.push_back (child_type); |
a02abb62 | 16533 | } |
c906108c SS |
16534 | } |
16535 | child_die = sibling_die (child_die); | |
16536 | } | |
16537 | ||
16538 | /* Dwarf2 dimensions are output from left to right, create the | |
16539 | necessary array types in backwards order. */ | |
7ca2d3a3 | 16540 | |
c906108c | 16541 | type = element_type; |
7ca2d3a3 DL |
16542 | |
16543 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
16544 | { | |
16545 | int i = 0; | |
9a619af0 | 16546 | |
791afaa2 | 16547 | while (i < range_types.size ()) |
dc53a7ad | 16548 | type = create_array_type_with_stride (NULL, type, range_types[i++], |
a405673c | 16549 | byte_stride_prop, bit_stride); |
7ca2d3a3 DL |
16550 | } |
16551 | else | |
16552 | { | |
791afaa2 | 16553 | size_t ndim = range_types.size (); |
7ca2d3a3 | 16554 | while (ndim-- > 0) |
dc53a7ad | 16555 | type = create_array_type_with_stride (NULL, type, range_types[ndim], |
a405673c | 16556 | byte_stride_prop, bit_stride); |
7ca2d3a3 | 16557 | } |
c906108c | 16558 | |
f5f8a009 EZ |
16559 | /* Understand Dwarf2 support for vector types (like they occur on |
16560 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
16561 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
16562 | custom vendor extension. The main difference between a regular | |
16563 | array and the vector variant is that vectors are passed by value | |
16564 | to functions. */ | |
e142c38c | 16565 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 | 16566 | if (attr) |
ea37ba09 | 16567 | make_vector_type (type); |
f5f8a009 | 16568 | |
dbc98a8b KW |
16569 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
16570 | implementation may choose to implement triple vectors using this | |
16571 | attribute. */ | |
16572 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
16573 | if (attr) | |
16574 | { | |
16575 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
16576 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16577 | else | |
b98664d3 | 16578 | complaint (_("DW_AT_byte_size for array type smaller " |
3e43a32a | 16579 | "than the total size of elements")); |
dbc98a8b KW |
16580 | } |
16581 | ||
39cbfefa DJ |
16582 | name = dwarf2_name (die, cu); |
16583 | if (name) | |
16584 | TYPE_NAME (type) = name; | |
6e70227d | 16585 | |
2b4424c3 TT |
16586 | maybe_set_alignment (cu, die, type); |
16587 | ||
0963b4bd | 16588 | /* Install the type in the die. */ |
7e314c57 JK |
16589 | set_die_type (die, type, cu); |
16590 | ||
16591 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
16592 | set_descriptive_type (type, die, cu); |
16593 | ||
7e314c57 | 16594 | return type; |
c906108c SS |
16595 | } |
16596 | ||
7ca2d3a3 | 16597 | static enum dwarf_array_dim_ordering |
6e70227d | 16598 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
16599 | { |
16600 | struct attribute *attr; | |
16601 | ||
16602 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
16603 | ||
aead7601 SM |
16604 | if (attr) |
16605 | return (enum dwarf_array_dim_ordering) DW_SND (attr); | |
7ca2d3a3 | 16606 | |
0963b4bd MS |
16607 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
16608 | opposite order to the dwarf2 specification, but data is still | |
16609 | laid out as per normal fortran. | |
7ca2d3a3 | 16610 | |
0963b4bd MS |
16611 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
16612 | version checking. */ | |
7ca2d3a3 | 16613 | |
905e0470 PM |
16614 | if (cu->language == language_fortran |
16615 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
16616 | { |
16617 | return DW_ORD_row_major; | |
16618 | } | |
16619 | ||
6e70227d | 16620 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
16621 | { |
16622 | case array_column_major: | |
16623 | return DW_ORD_col_major; | |
16624 | case array_row_major: | |
16625 | default: | |
16626 | return DW_ORD_row_major; | |
16627 | }; | |
16628 | } | |
16629 | ||
72019c9c | 16630 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 16631 | the DIE's type field. */ |
72019c9c | 16632 | |
f792889a | 16633 | static struct type * |
72019c9c GM |
16634 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
16635 | { | |
7e314c57 JK |
16636 | struct type *domain_type, *set_type; |
16637 | struct attribute *attr; | |
f792889a | 16638 | |
7e314c57 JK |
16639 | domain_type = die_type (die, cu); |
16640 | ||
16641 | /* The die_type call above may have already set the type for this DIE. */ | |
16642 | set_type = get_die_type (die, cu); | |
16643 | if (set_type) | |
16644 | return set_type; | |
16645 | ||
16646 | set_type = create_set_type (NULL, domain_type); | |
16647 | ||
16648 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
d09039dd PM |
16649 | if (attr) |
16650 | TYPE_LENGTH (set_type) = DW_UNSND (attr); | |
7e314c57 | 16651 | |
2b4424c3 TT |
16652 | maybe_set_alignment (cu, die, set_type); |
16653 | ||
f792889a | 16654 | return set_die_type (die, set_type, cu); |
72019c9c | 16655 | } |
7ca2d3a3 | 16656 | |
0971de02 TT |
16657 | /* A helper for read_common_block that creates a locexpr baton. |
16658 | SYM is the symbol which we are marking as computed. | |
16659 | COMMON_DIE is the DIE for the common block. | |
16660 | COMMON_LOC is the location expression attribute for the common | |
16661 | block itself. | |
16662 | MEMBER_LOC is the location expression attribute for the particular | |
16663 | member of the common block that we are processing. | |
16664 | CU is the CU from which the above come. */ | |
16665 | ||
16666 | static void | |
16667 | mark_common_block_symbol_computed (struct symbol *sym, | |
16668 | struct die_info *common_die, | |
16669 | struct attribute *common_loc, | |
16670 | struct attribute *member_loc, | |
16671 | struct dwarf2_cu *cu) | |
16672 | { | |
518817b3 SM |
16673 | struct dwarf2_per_objfile *dwarf2_per_objfile |
16674 | = cu->per_cu->dwarf2_per_objfile; | |
0971de02 TT |
16675 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
16676 | struct dwarf2_locexpr_baton *baton; | |
16677 | gdb_byte *ptr; | |
16678 | unsigned int cu_off; | |
16679 | enum bfd_endian byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
16680 | LONGEST offset = 0; | |
16681 | ||
16682 | gdb_assert (common_loc && member_loc); | |
16683 | gdb_assert (attr_form_is_block (common_loc)); | |
16684 | gdb_assert (attr_form_is_block (member_loc) | |
16685 | || attr_form_is_constant (member_loc)); | |
16686 | ||
8d749320 | 16687 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
0971de02 TT |
16688 | baton->per_cu = cu->per_cu; |
16689 | gdb_assert (baton->per_cu); | |
16690 | ||
16691 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
16692 | ||
16693 | if (attr_form_is_constant (member_loc)) | |
16694 | { | |
16695 | offset = dwarf2_get_attr_constant_value (member_loc, 0); | |
16696 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; | |
16697 | } | |
16698 | else | |
16699 | baton->size += DW_BLOCK (member_loc)->size; | |
16700 | ||
224c3ddb | 16701 | ptr = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, baton->size); |
0971de02 TT |
16702 | baton->data = ptr; |
16703 | ||
16704 | *ptr++ = DW_OP_call4; | |
9c541725 | 16705 | cu_off = common_die->sect_off - cu->per_cu->sect_off; |
0971de02 TT |
16706 | store_unsigned_integer (ptr, 4, byte_order, cu_off); |
16707 | ptr += 4; | |
16708 | ||
16709 | if (attr_form_is_constant (member_loc)) | |
16710 | { | |
16711 | *ptr++ = DW_OP_addr; | |
16712 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
16713 | ptr += cu->header.addr_size; | |
16714 | } | |
16715 | else | |
16716 | { | |
16717 | /* We have to copy the data here, because DW_OP_call4 will only | |
16718 | use a DW_AT_location attribute. */ | |
16719 | memcpy (ptr, DW_BLOCK (member_loc)->data, DW_BLOCK (member_loc)->size); | |
16720 | ptr += DW_BLOCK (member_loc)->size; | |
16721 | } | |
16722 | ||
16723 | *ptr++ = DW_OP_plus; | |
16724 | gdb_assert (ptr - baton->data == baton->size); | |
16725 | ||
0971de02 | 16726 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 16727 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
0971de02 TT |
16728 | } |
16729 | ||
4357ac6c TT |
16730 | /* Create appropriate locally-scoped variables for all the |
16731 | DW_TAG_common_block entries. Also create a struct common_block | |
16732 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
16733 | is used to sepate the common blocks name namespace from regular | |
16734 | variable names. */ | |
c906108c SS |
16735 | |
16736 | static void | |
e7c27a73 | 16737 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16738 | { |
0971de02 TT |
16739 | struct attribute *attr; |
16740 | ||
16741 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
16742 | if (attr) | |
16743 | { | |
16744 | /* Support the .debug_loc offsets. */ | |
16745 | if (attr_form_is_block (attr)) | |
16746 | { | |
16747 | /* Ok. */ | |
16748 | } | |
16749 | else if (attr_form_is_section_offset (attr)) | |
16750 | { | |
16751 | dwarf2_complex_location_expr_complaint (); | |
16752 | attr = NULL; | |
16753 | } | |
16754 | else | |
16755 | { | |
16756 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
16757 | "common block member"); | |
16758 | attr = NULL; | |
16759 | } | |
16760 | } | |
16761 | ||
639d11d3 | 16762 | if (die->child != NULL) |
c906108c | 16763 | { |
518817b3 | 16764 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
4357ac6c TT |
16765 | struct die_info *child_die; |
16766 | size_t n_entries = 0, size; | |
16767 | struct common_block *common_block; | |
16768 | struct symbol *sym; | |
74ac6d43 | 16769 | |
4357ac6c TT |
16770 | for (child_die = die->child; |
16771 | child_die && child_die->tag; | |
16772 | child_die = sibling_die (child_die)) | |
16773 | ++n_entries; | |
16774 | ||
16775 | size = (sizeof (struct common_block) | |
16776 | + (n_entries - 1) * sizeof (struct symbol *)); | |
224c3ddb SM |
16777 | common_block |
16778 | = (struct common_block *) obstack_alloc (&objfile->objfile_obstack, | |
16779 | size); | |
4357ac6c TT |
16780 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); |
16781 | common_block->n_entries = 0; | |
16782 | ||
16783 | for (child_die = die->child; | |
16784 | child_die && child_die->tag; | |
16785 | child_die = sibling_die (child_die)) | |
16786 | { | |
16787 | /* Create the symbol in the DW_TAG_common_block block in the current | |
16788 | symbol scope. */ | |
e7c27a73 | 16789 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
16790 | if (sym != NULL) |
16791 | { | |
16792 | struct attribute *member_loc; | |
16793 | ||
16794 | common_block->contents[common_block->n_entries++] = sym; | |
16795 | ||
16796 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
16797 | cu); | |
16798 | if (member_loc) | |
16799 | { | |
16800 | /* GDB has handled this for a long time, but it is | |
16801 | not specified by DWARF. It seems to have been | |
16802 | emitted by gfortran at least as recently as: | |
16803 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
b98664d3 | 16804 | complaint (_("Variable in common block has " |
0971de02 | 16805 | "DW_AT_data_member_location " |
9d8780f0 SM |
16806 | "- DIE at %s [in module %s]"), |
16807 | sect_offset_str (child_die->sect_off), | |
518817b3 | 16808 | objfile_name (objfile)); |
0971de02 TT |
16809 | |
16810 | if (attr_form_is_section_offset (member_loc)) | |
16811 | dwarf2_complex_location_expr_complaint (); | |
16812 | else if (attr_form_is_constant (member_loc) | |
16813 | || attr_form_is_block (member_loc)) | |
16814 | { | |
16815 | if (attr) | |
16816 | mark_common_block_symbol_computed (sym, die, attr, | |
16817 | member_loc, cu); | |
16818 | } | |
16819 | else | |
16820 | dwarf2_complex_location_expr_complaint (); | |
16821 | } | |
16822 | } | |
c906108c | 16823 | } |
4357ac6c TT |
16824 | |
16825 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
16826 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
16827 | } |
16828 | } | |
16829 | ||
0114d602 | 16830 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 16831 | |
0114d602 DJ |
16832 | static struct type * |
16833 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 16834 | { |
518817b3 | 16835 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 16836 | const char *previous_prefix, *name; |
9219021c | 16837 | int is_anonymous; |
0114d602 DJ |
16838 | struct type *type; |
16839 | ||
16840 | /* For extensions, reuse the type of the original namespace. */ | |
16841 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
16842 | { | |
16843 | struct die_info *ext_die; | |
16844 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 16845 | |
0114d602 DJ |
16846 | ext_die = dwarf2_extension (die, &ext_cu); |
16847 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
16848 | |
16849 | /* EXT_CU may not be the same as CU. | |
02142a6c | 16850 | Ensure TYPE is recorded with CU in die_type_hash. */ |
0114d602 DJ |
16851 | return set_die_type (die, type, cu); |
16852 | } | |
9219021c | 16853 | |
e142c38c | 16854 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
16855 | |
16856 | /* Now build the name of the current namespace. */ | |
16857 | ||
0114d602 DJ |
16858 | previous_prefix = determine_prefix (die, cu); |
16859 | if (previous_prefix[0] != '\0') | |
16860 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 16861 | previous_prefix, name, 0, cu); |
0114d602 DJ |
16862 | |
16863 | /* Create the type. */ | |
19f392bc | 16864 | type = init_type (objfile, TYPE_CODE_NAMESPACE, 0, name); |
0114d602 | 16865 | |
60531b24 | 16866 | return set_die_type (die, type, cu); |
0114d602 DJ |
16867 | } |
16868 | ||
22cee43f | 16869 | /* Read a namespace scope. */ |
0114d602 DJ |
16870 | |
16871 | static void | |
16872 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
16873 | { | |
518817b3 | 16874 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 16875 | int is_anonymous; |
9219021c | 16876 | |
5c4e30ca DC |
16877 | /* Add a symbol associated to this if we haven't seen the namespace |
16878 | before. Also, add a using directive if it's an anonymous | |
16879 | namespace. */ | |
9219021c | 16880 | |
f2f0e013 | 16881 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
16882 | { |
16883 | struct type *type; | |
16884 | ||
0114d602 | 16885 | type = read_type_die (die, cu); |
e7c27a73 | 16886 | new_symbol (die, type, cu); |
5c4e30ca | 16887 | |
e8e80198 | 16888 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 16889 | if (is_anonymous) |
0114d602 DJ |
16890 | { |
16891 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 16892 | |
eb1e02fd | 16893 | std::vector<const char *> excludes; |
804d2729 | 16894 | add_using_directive (using_directives (cu), |
22cee43f | 16895 | previous_prefix, TYPE_NAME (type), NULL, |
eb1e02fd | 16896 | NULL, excludes, 0, &objfile->objfile_obstack); |
0114d602 | 16897 | } |
5c4e30ca | 16898 | } |
9219021c | 16899 | |
639d11d3 | 16900 | if (die->child != NULL) |
d9fa45fe | 16901 | { |
639d11d3 | 16902 | struct die_info *child_die = die->child; |
6e70227d | 16903 | |
d9fa45fe DC |
16904 | while (child_die && child_die->tag) |
16905 | { | |
e7c27a73 | 16906 | process_die (child_die, cu); |
d9fa45fe DC |
16907 | child_die = sibling_die (child_die); |
16908 | } | |
16909 | } | |
38d518c9 EZ |
16910 | } |
16911 | ||
f55ee35c JK |
16912 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
16913 | imported module. Still we need that type as local Fortran "use ... only" | |
16914 | declaration imports depend on the created type in determine_prefix. */ | |
16915 | ||
16916 | static struct type * | |
16917 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
16918 | { | |
518817b3 | 16919 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
15d034d0 | 16920 | const char *module_name; |
f55ee35c JK |
16921 | struct type *type; |
16922 | ||
16923 | module_name = dwarf2_name (die, cu); | |
16924 | if (!module_name) | |
b98664d3 | 16925 | complaint (_("DW_TAG_module has no name, offset %s"), |
9d8780f0 | 16926 | sect_offset_str (die->sect_off)); |
19f392bc | 16927 | type = init_type (objfile, TYPE_CODE_MODULE, 0, module_name); |
f55ee35c | 16928 | |
f55ee35c JK |
16929 | return set_die_type (die, type, cu); |
16930 | } | |
16931 | ||
5d7cb8df JK |
16932 | /* Read a Fortran module. */ |
16933 | ||
16934 | static void | |
16935 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
16936 | { | |
16937 | struct die_info *child_die = die->child; | |
530e8392 KB |
16938 | struct type *type; |
16939 | ||
16940 | type = read_type_die (die, cu); | |
16941 | new_symbol (die, type, cu); | |
5d7cb8df | 16942 | |
5d7cb8df JK |
16943 | while (child_die && child_die->tag) |
16944 | { | |
16945 | process_die (child_die, cu); | |
16946 | child_die = sibling_die (child_die); | |
16947 | } | |
16948 | } | |
16949 | ||
38d518c9 EZ |
16950 | /* Return the name of the namespace represented by DIE. Set |
16951 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
16952 | namespace. */ | |
16953 | ||
16954 | static const char * | |
e142c38c | 16955 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
16956 | { |
16957 | struct die_info *current_die; | |
16958 | const char *name = NULL; | |
16959 | ||
16960 | /* Loop through the extensions until we find a name. */ | |
16961 | ||
16962 | for (current_die = die; | |
16963 | current_die != NULL; | |
f2f0e013 | 16964 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 16965 | { |
96553a0c DE |
16966 | /* We don't use dwarf2_name here so that we can detect the absence |
16967 | of a name -> anonymous namespace. */ | |
7d45c7c3 | 16968 | name = dwarf2_string_attr (die, DW_AT_name, cu); |
96553a0c | 16969 | |
38d518c9 EZ |
16970 | if (name != NULL) |
16971 | break; | |
16972 | } | |
16973 | ||
16974 | /* Is it an anonymous namespace? */ | |
16975 | ||
16976 | *is_anonymous = (name == NULL); | |
16977 | if (*is_anonymous) | |
2b1dbab0 | 16978 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
16979 | |
16980 | return name; | |
d9fa45fe DC |
16981 | } |
16982 | ||
c906108c SS |
16983 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
16984 | the user defined type vector. */ | |
16985 | ||
f792889a | 16986 | static struct type * |
e7c27a73 | 16987 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16988 | { |
518817b3 SM |
16989 | struct gdbarch *gdbarch |
16990 | = get_objfile_arch (cu->per_cu->dwarf2_per_objfile->objfile); | |
e7c27a73 | 16991 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 16992 | struct type *type; |
8b2dbe47 KB |
16993 | struct attribute *attr_byte_size; |
16994 | struct attribute *attr_address_class; | |
16995 | int byte_size, addr_class; | |
7e314c57 JK |
16996 | struct type *target_type; |
16997 | ||
16998 | target_type = die_type (die, cu); | |
c906108c | 16999 | |
7e314c57 JK |
17000 | /* The die_type call above may have already set the type for this DIE. */ |
17001 | type = get_die_type (die, cu); | |
17002 | if (type) | |
17003 | return type; | |
17004 | ||
17005 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 17006 | |
e142c38c | 17007 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
17008 | if (attr_byte_size) |
17009 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 17010 | else |
8b2dbe47 KB |
17011 | byte_size = cu_header->addr_size; |
17012 | ||
e142c38c | 17013 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
17014 | if (attr_address_class) |
17015 | addr_class = DW_UNSND (attr_address_class); | |
17016 | else | |
17017 | addr_class = DW_ADDR_none; | |
17018 | ||
2b4424c3 TT |
17019 | ULONGEST alignment = get_alignment (cu, die); |
17020 | ||
17021 | /* If the pointer size, alignment, or address class is different | |
17022 | than the default, create a type variant marked as such and set | |
17023 | the length accordingly. */ | |
17024 | if (TYPE_LENGTH (type) != byte_size | |
17025 | || (alignment != 0 && TYPE_RAW_ALIGN (type) != 0 | |
17026 | && alignment != TYPE_RAW_ALIGN (type)) | |
17027 | || addr_class != DW_ADDR_none) | |
c906108c | 17028 | { |
5e2b427d | 17029 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
17030 | { |
17031 | int type_flags; | |
17032 | ||
849957d9 | 17033 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 17034 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
17035 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
17036 | == 0); | |
8b2dbe47 KB |
17037 | type = make_type_with_address_space (type, type_flags); |
17038 | } | |
17039 | else if (TYPE_LENGTH (type) != byte_size) | |
17040 | { | |
b98664d3 | 17041 | complaint (_("invalid pointer size %d"), byte_size); |
8b2dbe47 | 17042 | } |
2b4424c3 TT |
17043 | else if (TYPE_RAW_ALIGN (type) != alignment) |
17044 | { | |
b98664d3 | 17045 | complaint (_("Invalid DW_AT_alignment" |
2b4424c3 TT |
17046 | " - DIE at %s [in module %s]"), |
17047 | sect_offset_str (die->sect_off), | |
17048 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
17049 | } | |
6e70227d | 17050 | else |
9a619af0 MS |
17051 | { |
17052 | /* Should we also complain about unhandled address classes? */ | |
17053 | } | |
c906108c | 17054 | } |
8b2dbe47 KB |
17055 | |
17056 | TYPE_LENGTH (type) = byte_size; | |
2b4424c3 | 17057 | set_type_align (type, alignment); |
f792889a | 17058 | return set_die_type (die, type, cu); |
c906108c SS |
17059 | } |
17060 | ||
17061 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
17062 | the user defined type vector. */ | |
17063 | ||
f792889a | 17064 | static struct type * |
e7c27a73 | 17065 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
17066 | { |
17067 | struct type *type; | |
17068 | struct type *to_type; | |
17069 | struct type *domain; | |
17070 | ||
e7c27a73 DJ |
17071 | to_type = die_type (die, cu); |
17072 | domain = die_containing_type (die, cu); | |
0d5de010 | 17073 | |
7e314c57 JK |
17074 | /* The calls above may have already set the type for this DIE. */ |
17075 | type = get_die_type (die, cu); | |
17076 | if (type) | |
17077 | return type; | |
17078 | ||
0d5de010 DJ |
17079 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) |
17080 | type = lookup_methodptr_type (to_type); | |
7078baeb TT |
17081 | else if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_FUNC) |
17082 | { | |
518817b3 SM |
17083 | struct type *new_type |
17084 | = alloc_type (cu->per_cu->dwarf2_per_objfile->objfile); | |
7078baeb TT |
17085 | |
17086 | smash_to_method_type (new_type, domain, TYPE_TARGET_TYPE (to_type), | |
17087 | TYPE_FIELDS (to_type), TYPE_NFIELDS (to_type), | |
17088 | TYPE_VARARGS (to_type)); | |
17089 | type = lookup_methodptr_type (new_type); | |
17090 | } | |
0d5de010 DJ |
17091 | else |
17092 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 17093 | |
f792889a | 17094 | return set_die_type (die, type, cu); |
c906108c SS |
17095 | } |
17096 | ||
4297a3f0 | 17097 | /* Extract all information from a DW_TAG_{rvalue_,}reference_type DIE and add to |
c906108c SS |
17098 | the user defined type vector. */ |
17099 | ||
f792889a | 17100 | static struct type * |
4297a3f0 AV |
17101 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu, |
17102 | enum type_code refcode) | |
c906108c | 17103 | { |
e7c27a73 | 17104 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 17105 | struct type *type, *target_type; |
c906108c SS |
17106 | struct attribute *attr; |
17107 | ||
4297a3f0 AV |
17108 | gdb_assert (refcode == TYPE_CODE_REF || refcode == TYPE_CODE_RVALUE_REF); |
17109 | ||
7e314c57 JK |
17110 | target_type = die_type (die, cu); |
17111 | ||
17112 | /* The die_type call above may have already set the type for this DIE. */ | |
17113 | type = get_die_type (die, cu); | |
17114 | if (type) | |
17115 | return type; | |
17116 | ||
4297a3f0 | 17117 | type = lookup_reference_type (target_type, refcode); |
e142c38c | 17118 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
17119 | if (attr) |
17120 | { | |
17121 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
17122 | } | |
17123 | else | |
17124 | { | |
107d2387 | 17125 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 17126 | } |
2b4424c3 | 17127 | maybe_set_alignment (cu, die, type); |
f792889a | 17128 | return set_die_type (die, type, cu); |
c906108c SS |
17129 | } |
17130 | ||
cf363f18 MW |
17131 | /* Add the given cv-qualifiers to the element type of the array. GCC |
17132 | outputs DWARF type qualifiers that apply to an array, not the | |
17133 | element type. But GDB relies on the array element type to carry | |
17134 | the cv-qualifiers. This mimics section 6.7.3 of the C99 | |
17135 | specification. */ | |
17136 | ||
17137 | static struct type * | |
17138 | add_array_cv_type (struct die_info *die, struct dwarf2_cu *cu, | |
17139 | struct type *base_type, int cnst, int voltl) | |
17140 | { | |
17141 | struct type *el_type, *inner_array; | |
17142 | ||
17143 | base_type = copy_type (base_type); | |
17144 | inner_array = base_type; | |
17145 | ||
17146 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) | |
17147 | { | |
17148 | TYPE_TARGET_TYPE (inner_array) = | |
17149 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
17150 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
17151 | } | |
17152 | ||
17153 | el_type = TYPE_TARGET_TYPE (inner_array); | |
17154 | cnst |= TYPE_CONST (el_type); | |
17155 | voltl |= TYPE_VOLATILE (el_type); | |
17156 | TYPE_TARGET_TYPE (inner_array) = make_cv_type (cnst, voltl, el_type, NULL); | |
17157 | ||
17158 | return set_die_type (die, base_type, cu); | |
17159 | } | |
17160 | ||
f792889a | 17161 | static struct type * |
e7c27a73 | 17162 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17163 | { |
f792889a | 17164 | struct type *base_type, *cv_type; |
c906108c | 17165 | |
e7c27a73 | 17166 | base_type = die_type (die, cu); |
7e314c57 JK |
17167 | |
17168 | /* The die_type call above may have already set the type for this DIE. */ | |
17169 | cv_type = get_die_type (die, cu); | |
17170 | if (cv_type) | |
17171 | return cv_type; | |
17172 | ||
2f608a3a KW |
17173 | /* In case the const qualifier is applied to an array type, the element type |
17174 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
17175 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
cf363f18 | 17176 | return add_array_cv_type (die, cu, base_type, 1, 0); |
2f608a3a | 17177 | |
f792889a DJ |
17178 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
17179 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
17180 | } |
17181 | ||
f792889a | 17182 | static struct type * |
e7c27a73 | 17183 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17184 | { |
f792889a | 17185 | struct type *base_type, *cv_type; |
c906108c | 17186 | |
e7c27a73 | 17187 | base_type = die_type (die, cu); |
7e314c57 JK |
17188 | |
17189 | /* The die_type call above may have already set the type for this DIE. */ | |
17190 | cv_type = get_die_type (die, cu); | |
17191 | if (cv_type) | |
17192 | return cv_type; | |
17193 | ||
cf363f18 MW |
17194 | /* In case the volatile qualifier is applied to an array type, the |
17195 | element type is so qualified, not the array type (section 6.7.3 | |
17196 | of C99). */ | |
17197 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
17198 | return add_array_cv_type (die, cu, base_type, 0, 1); | |
17199 | ||
f792889a DJ |
17200 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
17201 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
17202 | } |
17203 | ||
06d66ee9 TT |
17204 | /* Handle DW_TAG_restrict_type. */ |
17205 | ||
17206 | static struct type * | |
17207 | read_tag_restrict_type (struct die_info *die, struct dwarf2_cu *cu) | |
17208 | { | |
17209 | struct type *base_type, *cv_type; | |
17210 | ||
17211 | base_type = die_type (die, cu); | |
17212 | ||
17213 | /* The die_type call above may have already set the type for this DIE. */ | |
17214 | cv_type = get_die_type (die, cu); | |
17215 | if (cv_type) | |
17216 | return cv_type; | |
17217 | ||
17218 | cv_type = make_restrict_type (base_type); | |
17219 | return set_die_type (die, cv_type, cu); | |
17220 | } | |
17221 | ||
a2c2acaf MW |
17222 | /* Handle DW_TAG_atomic_type. */ |
17223 | ||
17224 | static struct type * | |
17225 | read_tag_atomic_type (struct die_info *die, struct dwarf2_cu *cu) | |
17226 | { | |
17227 | struct type *base_type, *cv_type; | |
17228 | ||
17229 | base_type = die_type (die, cu); | |
17230 | ||
17231 | /* The die_type call above may have already set the type for this DIE. */ | |
17232 | cv_type = get_die_type (die, cu); | |
17233 | if (cv_type) | |
17234 | return cv_type; | |
17235 | ||
17236 | cv_type = make_atomic_type (base_type); | |
17237 | return set_die_type (die, cv_type, cu); | |
17238 | } | |
17239 | ||
c906108c SS |
17240 | /* Extract all information from a DW_TAG_string_type DIE and add to |
17241 | the user defined type vector. It isn't really a user defined type, | |
17242 | but it behaves like one, with other DIE's using an AT_user_def_type | |
17243 | attribute to reference it. */ | |
17244 | ||
f792889a | 17245 | static struct type * |
e7c27a73 | 17246 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17247 | { |
518817b3 | 17248 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3b7538c0 | 17249 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
17250 | struct type *type, *range_type, *index_type, *char_type; |
17251 | struct attribute *attr; | |
17252 | unsigned int length; | |
17253 | ||
e142c38c | 17254 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
17255 | if (attr) |
17256 | { | |
17257 | length = DW_UNSND (attr); | |
17258 | } | |
17259 | else | |
17260 | { | |
0963b4bd | 17261 | /* Check for the DW_AT_byte_size attribute. */ |
e142c38c | 17262 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
17263 | if (attr) |
17264 | { | |
17265 | length = DW_UNSND (attr); | |
17266 | } | |
17267 | else | |
17268 | { | |
17269 | length = 1; | |
17270 | } | |
c906108c | 17271 | } |
6ccb9162 | 17272 | |
46bf5051 | 17273 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 17274 | range_type = create_static_range_type (NULL, index_type, 1, length); |
3b7538c0 UW |
17275 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
17276 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 17277 | |
f792889a | 17278 | return set_die_type (die, type, cu); |
c906108c SS |
17279 | } |
17280 | ||
4d804846 JB |
17281 | /* Assuming that DIE corresponds to a function, returns nonzero |
17282 | if the function is prototyped. */ | |
17283 | ||
17284 | static int | |
17285 | prototyped_function_p (struct die_info *die, struct dwarf2_cu *cu) | |
17286 | { | |
17287 | struct attribute *attr; | |
17288 | ||
17289 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); | |
17290 | if (attr && (DW_UNSND (attr) != 0)) | |
17291 | return 1; | |
17292 | ||
17293 | /* The DWARF standard implies that the DW_AT_prototyped attribute | |
17294 | is only meaninful for C, but the concept also extends to other | |
17295 | languages that allow unprototyped functions (Eg: Objective C). | |
17296 | For all other languages, assume that functions are always | |
17297 | prototyped. */ | |
17298 | if (cu->language != language_c | |
17299 | && cu->language != language_objc | |
17300 | && cu->language != language_opencl) | |
17301 | return 1; | |
17302 | ||
17303 | /* RealView does not emit DW_AT_prototyped. We can not distinguish | |
17304 | prototyped and unprototyped functions; default to prototyped, | |
17305 | since that is more common in modern code (and RealView warns | |
17306 | about unprototyped functions). */ | |
17307 | if (producer_is_realview (cu->producer)) | |
17308 | return 1; | |
17309 | ||
17310 | return 0; | |
17311 | } | |
17312 | ||
c906108c SS |
17313 | /* Handle DIES due to C code like: |
17314 | ||
17315 | struct foo | |
c5aa993b JM |
17316 | { |
17317 | int (*funcp)(int a, long l); | |
17318 | int b; | |
17319 | }; | |
c906108c | 17320 | |
0963b4bd | 17321 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 17322 | |
f792889a | 17323 | static struct type * |
e7c27a73 | 17324 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17325 | { |
518817b3 | 17326 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0963b4bd MS |
17327 | struct type *type; /* Type that this function returns. */ |
17328 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
17329 | struct attribute *attr; |
17330 | ||
e7c27a73 | 17331 | type = die_type (die, cu); |
7e314c57 JK |
17332 | |
17333 | /* The die_type call above may have already set the type for this DIE. */ | |
17334 | ftype = get_die_type (die, cu); | |
17335 | if (ftype) | |
17336 | return ftype; | |
17337 | ||
0c8b41f1 | 17338 | ftype = lookup_function_type (type); |
c906108c | 17339 | |
4d804846 | 17340 | if (prototyped_function_p (die, cu)) |
a6c727b2 | 17341 | TYPE_PROTOTYPED (ftype) = 1; |
c906108c | 17342 | |
c055b101 CV |
17343 | /* Store the calling convention in the type if it's available in |
17344 | the subroutine die. Otherwise set the calling convention to | |
17345 | the default value DW_CC_normal. */ | |
17346 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
54fcddd0 UW |
17347 | if (attr) |
17348 | TYPE_CALLING_CONVENTION (ftype) = DW_UNSND (attr); | |
17349 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) | |
17350 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
17351 | else | |
17352 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 | 17353 | |
743649fd MW |
17354 | /* Record whether the function returns normally to its caller or not |
17355 | if the DWARF producer set that information. */ | |
17356 | attr = dwarf2_attr (die, DW_AT_noreturn, cu); | |
17357 | if (attr && (DW_UNSND (attr) != 0)) | |
17358 | TYPE_NO_RETURN (ftype) = 1; | |
17359 | ||
76c10ea2 GM |
17360 | /* We need to add the subroutine type to the die immediately so |
17361 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 17362 | declared as the same subroutine type. */ |
76c10ea2 | 17363 | set_die_type (die, ftype, cu); |
6e70227d | 17364 | |
639d11d3 | 17365 | if (die->child != NULL) |
c906108c | 17366 | { |
bb5ed363 | 17367 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 17368 | struct die_info *child_die; |
8072405b | 17369 | int nparams, iparams; |
c906108c SS |
17370 | |
17371 | /* Count the number of parameters. | |
17372 | FIXME: GDB currently ignores vararg functions, but knows about | |
17373 | vararg member functions. */ | |
8072405b | 17374 | nparams = 0; |
639d11d3 | 17375 | child_die = die->child; |
c906108c SS |
17376 | while (child_die && child_die->tag) |
17377 | { | |
17378 | if (child_die->tag == DW_TAG_formal_parameter) | |
17379 | nparams++; | |
17380 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 17381 | TYPE_VARARGS (ftype) = 1; |
c906108c SS |
17382 | child_die = sibling_die (child_die); |
17383 | } | |
17384 | ||
17385 | /* Allocate storage for parameters and fill them in. */ | |
17386 | TYPE_NFIELDS (ftype) = nparams; | |
17387 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 17388 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 17389 | |
8072405b JK |
17390 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
17391 | even if we error out during the parameters reading below. */ | |
17392 | for (iparams = 0; iparams < nparams; iparams++) | |
17393 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
17394 | ||
17395 | iparams = 0; | |
639d11d3 | 17396 | child_die = die->child; |
c906108c SS |
17397 | while (child_die && child_die->tag) |
17398 | { | |
17399 | if (child_die->tag == DW_TAG_formal_parameter) | |
17400 | { | |
3ce3b1ba PA |
17401 | struct type *arg_type; |
17402 | ||
17403 | /* DWARF version 2 has no clean way to discern C++ | |
17404 | static and non-static member functions. G++ helps | |
17405 | GDB by marking the first parameter for non-static | |
17406 | member functions (which is the this pointer) as | |
17407 | artificial. We pass this information to | |
17408 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
17409 | ||
17410 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
17411 | 4.5 does not yet generate. */ | |
e142c38c | 17412 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
17413 | if (attr) |
17414 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
17415 | else | |
9c37b5ae | 17416 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
3ce3b1ba PA |
17417 | arg_type = die_type (child_die, cu); |
17418 | ||
17419 | /* RealView does not mark THIS as const, which the testsuite | |
17420 | expects. GCC marks THIS as const in method definitions, | |
17421 | but not in the class specifications (GCC PR 43053). */ | |
17422 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
17423 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
17424 | { | |
17425 | int is_this = 0; | |
17426 | struct dwarf2_cu *arg_cu = cu; | |
17427 | const char *name = dwarf2_name (child_die, cu); | |
17428 | ||
17429 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
17430 | if (attr) | |
17431 | { | |
17432 | /* If the compiler emits this, use it. */ | |
17433 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
17434 | is_this = 1; | |
17435 | } | |
17436 | else if (name && strcmp (name, "this") == 0) | |
17437 | /* Function definitions will have the argument names. */ | |
17438 | is_this = 1; | |
17439 | else if (name == NULL && iparams == 0) | |
17440 | /* Declarations may not have the names, so like | |
17441 | elsewhere in GDB, assume an artificial first | |
17442 | argument is "this". */ | |
17443 | is_this = 1; | |
17444 | ||
17445 | if (is_this) | |
17446 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
17447 | arg_type, 0); | |
17448 | } | |
17449 | ||
17450 | TYPE_FIELD_TYPE (ftype, iparams) = arg_type; | |
c906108c SS |
17451 | iparams++; |
17452 | } | |
17453 | child_die = sibling_die (child_die); | |
17454 | } | |
17455 | } | |
17456 | ||
76c10ea2 | 17457 | return ftype; |
c906108c SS |
17458 | } |
17459 | ||
f792889a | 17460 | static struct type * |
e7c27a73 | 17461 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17462 | { |
518817b3 | 17463 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 17464 | const char *name = NULL; |
3c8e0968 | 17465 | struct type *this_type, *target_type; |
c906108c | 17466 | |
94af9270 | 17467 | name = dwarf2_full_name (NULL, die, cu); |
19f392bc UW |
17468 | this_type = init_type (objfile, TYPE_CODE_TYPEDEF, 0, name); |
17469 | TYPE_TARGET_STUB (this_type) = 1; | |
f792889a | 17470 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
17471 | target_type = die_type (die, cu); |
17472 | if (target_type != this_type) | |
17473 | TYPE_TARGET_TYPE (this_type) = target_type; | |
17474 | else | |
17475 | { | |
17476 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
17477 | spec and cause infinite loops in GDB. */ | |
b98664d3 | 17478 | complaint (_("Self-referential DW_TAG_typedef " |
9d8780f0 SM |
17479 | "- DIE at %s [in module %s]"), |
17480 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
3c8e0968 DE |
17481 | TYPE_TARGET_TYPE (this_type) = NULL; |
17482 | } | |
f792889a | 17483 | return this_type; |
c906108c SS |
17484 | } |
17485 | ||
9b790ce7 UW |
17486 | /* Allocate a floating-point type of size BITS and name NAME. Pass NAME_HINT |
17487 | (which may be different from NAME) to the architecture back-end to allow | |
17488 | it to guess the correct format if necessary. */ | |
17489 | ||
17490 | static struct type * | |
17491 | dwarf2_init_float_type (struct objfile *objfile, int bits, const char *name, | |
17492 | const char *name_hint) | |
17493 | { | |
17494 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
17495 | const struct floatformat **format; | |
17496 | struct type *type; | |
17497 | ||
17498 | format = gdbarch_floatformat_for_type (gdbarch, name_hint, bits); | |
17499 | if (format) | |
17500 | type = init_float_type (objfile, bits, name, format); | |
17501 | else | |
77b7c781 | 17502 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
9b790ce7 UW |
17503 | |
17504 | return type; | |
17505 | } | |
17506 | ||
eb77c9df AB |
17507 | /* Allocate an integer type of size BITS and name NAME. */ |
17508 | ||
17509 | static struct type * | |
17510 | dwarf2_init_integer_type (struct dwarf2_cu *cu, struct objfile *objfile, | |
17511 | int bits, int unsigned_p, const char *name) | |
17512 | { | |
17513 | struct type *type; | |
17514 | ||
17515 | /* Versions of Intel's C Compiler generate an integer type called "void" | |
17516 | instead of using DW_TAG_unspecified_type. This has been seen on | |
17517 | at least versions 14, 17, and 18. */ | |
35ee2dc2 AB |
17518 | if (bits == 0 && producer_is_icc (cu) && name != nullptr |
17519 | && strcmp (name, "void") == 0) | |
eb77c9df AB |
17520 | type = objfile_type (objfile)->builtin_void; |
17521 | else | |
17522 | type = init_integer_type (objfile, bits, unsigned_p, name); | |
17523 | ||
17524 | return type; | |
17525 | } | |
17526 | ||
c906108c SS |
17527 | /* Find a representation of a given base type and install |
17528 | it in the TYPE field of the die. */ | |
17529 | ||
f792889a | 17530 | static struct type * |
e7c27a73 | 17531 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17532 | { |
518817b3 | 17533 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c SS |
17534 | struct type *type; |
17535 | struct attribute *attr; | |
19f392bc | 17536 | int encoding = 0, bits = 0; |
15d034d0 | 17537 | const char *name; |
c906108c | 17538 | |
e142c38c | 17539 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
17540 | if (attr) |
17541 | { | |
17542 | encoding = DW_UNSND (attr); | |
17543 | } | |
e142c38c | 17544 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
17545 | if (attr) |
17546 | { | |
19f392bc | 17547 | bits = DW_UNSND (attr) * TARGET_CHAR_BIT; |
c906108c | 17548 | } |
39cbfefa | 17549 | name = dwarf2_name (die, cu); |
6ccb9162 | 17550 | if (!name) |
c906108c | 17551 | { |
b98664d3 | 17552 | complaint (_("DW_AT_name missing from DW_TAG_base_type")); |
c906108c | 17553 | } |
6ccb9162 UW |
17554 | |
17555 | switch (encoding) | |
c906108c | 17556 | { |
6ccb9162 UW |
17557 | case DW_ATE_address: |
17558 | /* Turn DW_ATE_address into a void * pointer. */ | |
77b7c781 | 17559 | type = init_type (objfile, TYPE_CODE_VOID, TARGET_CHAR_BIT, NULL); |
19f392bc | 17560 | type = init_pointer_type (objfile, bits, name, type); |
6ccb9162 UW |
17561 | break; |
17562 | case DW_ATE_boolean: | |
19f392bc | 17563 | type = init_boolean_type (objfile, bits, 1, name); |
6ccb9162 UW |
17564 | break; |
17565 | case DW_ATE_complex_float: | |
9b790ce7 | 17566 | type = dwarf2_init_float_type (objfile, bits / 2, NULL, name); |
19f392bc | 17567 | type = init_complex_type (objfile, name, type); |
6ccb9162 UW |
17568 | break; |
17569 | case DW_ATE_decimal_float: | |
19f392bc | 17570 | type = init_decfloat_type (objfile, bits, name); |
6ccb9162 UW |
17571 | break; |
17572 | case DW_ATE_float: | |
9b790ce7 | 17573 | type = dwarf2_init_float_type (objfile, bits, name, name); |
6ccb9162 UW |
17574 | break; |
17575 | case DW_ATE_signed: | |
eb77c9df | 17576 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
17577 | break; |
17578 | case DW_ATE_unsigned: | |
3b2b8fea TT |
17579 | if (cu->language == language_fortran |
17580 | && name | |
61012eef | 17581 | && startswith (name, "character(")) |
19f392bc UW |
17582 | type = init_character_type (objfile, bits, 1, name); |
17583 | else | |
eb77c9df | 17584 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 UW |
17585 | break; |
17586 | case DW_ATE_signed_char: | |
6e70227d | 17587 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
17588 | || cu->language == language_pascal |
17589 | || cu->language == language_fortran) | |
19f392bc UW |
17590 | type = init_character_type (objfile, bits, 0, name); |
17591 | else | |
eb77c9df | 17592 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
17593 | break; |
17594 | case DW_ATE_unsigned_char: | |
868a0084 | 17595 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea | 17596 | || cu->language == language_pascal |
c44af4eb TT |
17597 | || cu->language == language_fortran |
17598 | || cu->language == language_rust) | |
19f392bc UW |
17599 | type = init_character_type (objfile, bits, 1, name); |
17600 | else | |
eb77c9df | 17601 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 | 17602 | break; |
75079b2b | 17603 | case DW_ATE_UTF: |
53e710ac PA |
17604 | { |
17605 | gdbarch *arch = get_objfile_arch (objfile); | |
17606 | ||
17607 | if (bits == 16) | |
17608 | type = builtin_type (arch)->builtin_char16; | |
17609 | else if (bits == 32) | |
17610 | type = builtin_type (arch)->builtin_char32; | |
17611 | else | |
17612 | { | |
b98664d3 | 17613 | complaint (_("unsupported DW_ATE_UTF bit size: '%d'"), |
53e710ac | 17614 | bits); |
eb77c9df | 17615 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
53e710ac PA |
17616 | } |
17617 | return set_die_type (die, type, cu); | |
17618 | } | |
75079b2b TT |
17619 | break; |
17620 | ||
6ccb9162 | 17621 | default: |
b98664d3 | 17622 | complaint (_("unsupported DW_AT_encoding: '%s'"), |
6ccb9162 | 17623 | dwarf_type_encoding_name (encoding)); |
77b7c781 | 17624 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
6ccb9162 | 17625 | break; |
c906108c | 17626 | } |
6ccb9162 | 17627 | |
0114d602 | 17628 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 17629 | TYPE_NOSIGN (type) = 1; |
0114d602 | 17630 | |
2b4424c3 TT |
17631 | maybe_set_alignment (cu, die, type); |
17632 | ||
f792889a | 17633 | return set_die_type (die, type, cu); |
c906108c SS |
17634 | } |
17635 | ||
80180f79 SA |
17636 | /* Parse dwarf attribute if it's a block, reference or constant and put the |
17637 | resulting value of the attribute into struct bound_prop. | |
17638 | Returns 1 if ATTR could be resolved into PROP, 0 otherwise. */ | |
17639 | ||
17640 | static int | |
17641 | attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die, | |
17642 | struct dwarf2_cu *cu, struct dynamic_prop *prop) | |
17643 | { | |
17644 | struct dwarf2_property_baton *baton; | |
518817b3 SM |
17645 | struct obstack *obstack |
17646 | = &cu->per_cu->dwarf2_per_objfile->objfile->objfile_obstack; | |
80180f79 SA |
17647 | |
17648 | if (attr == NULL || prop == NULL) | |
17649 | return 0; | |
17650 | ||
17651 | if (attr_form_is_block (attr)) | |
17652 | { | |
8d749320 | 17653 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
80180f79 SA |
17654 | baton->referenced_type = NULL; |
17655 | baton->locexpr.per_cu = cu->per_cu; | |
17656 | baton->locexpr.size = DW_BLOCK (attr)->size; | |
17657 | baton->locexpr.data = DW_BLOCK (attr)->data; | |
17658 | prop->data.baton = baton; | |
17659 | prop->kind = PROP_LOCEXPR; | |
17660 | gdb_assert (prop->data.baton != NULL); | |
17661 | } | |
17662 | else if (attr_form_is_ref (attr)) | |
17663 | { | |
17664 | struct dwarf2_cu *target_cu = cu; | |
17665 | struct die_info *target_die; | |
17666 | struct attribute *target_attr; | |
17667 | ||
17668 | target_die = follow_die_ref (die, attr, &target_cu); | |
17669 | target_attr = dwarf2_attr (target_die, DW_AT_location, target_cu); | |
df25ebbd JB |
17670 | if (target_attr == NULL) |
17671 | target_attr = dwarf2_attr (target_die, DW_AT_data_member_location, | |
17672 | target_cu); | |
80180f79 SA |
17673 | if (target_attr == NULL) |
17674 | return 0; | |
17675 | ||
df25ebbd | 17676 | switch (target_attr->name) |
80180f79 | 17677 | { |
df25ebbd JB |
17678 | case DW_AT_location: |
17679 | if (attr_form_is_section_offset (target_attr)) | |
17680 | { | |
8d749320 | 17681 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
df25ebbd JB |
17682 | baton->referenced_type = die_type (target_die, target_cu); |
17683 | fill_in_loclist_baton (cu, &baton->loclist, target_attr); | |
17684 | prop->data.baton = baton; | |
17685 | prop->kind = PROP_LOCLIST; | |
17686 | gdb_assert (prop->data.baton != NULL); | |
17687 | } | |
17688 | else if (attr_form_is_block (target_attr)) | |
17689 | { | |
8d749320 | 17690 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
df25ebbd JB |
17691 | baton->referenced_type = die_type (target_die, target_cu); |
17692 | baton->locexpr.per_cu = cu->per_cu; | |
17693 | baton->locexpr.size = DW_BLOCK (target_attr)->size; | |
17694 | baton->locexpr.data = DW_BLOCK (target_attr)->data; | |
17695 | prop->data.baton = baton; | |
17696 | prop->kind = PROP_LOCEXPR; | |
17697 | gdb_assert (prop->data.baton != NULL); | |
17698 | } | |
17699 | else | |
17700 | { | |
17701 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
17702 | "dynamic property"); | |
17703 | return 0; | |
17704 | } | |
17705 | break; | |
17706 | case DW_AT_data_member_location: | |
17707 | { | |
17708 | LONGEST offset; | |
17709 | ||
17710 | if (!handle_data_member_location (target_die, target_cu, | |
17711 | &offset)) | |
17712 | return 0; | |
17713 | ||
8d749320 | 17714 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
6ad395a7 JB |
17715 | baton->referenced_type = read_type_die (target_die->parent, |
17716 | target_cu); | |
df25ebbd JB |
17717 | baton->offset_info.offset = offset; |
17718 | baton->offset_info.type = die_type (target_die, target_cu); | |
17719 | prop->data.baton = baton; | |
17720 | prop->kind = PROP_ADDR_OFFSET; | |
17721 | break; | |
17722 | } | |
80180f79 SA |
17723 | } |
17724 | } | |
17725 | else if (attr_form_is_constant (attr)) | |
17726 | { | |
17727 | prop->data.const_val = dwarf2_get_attr_constant_value (attr, 0); | |
17728 | prop->kind = PROP_CONST; | |
17729 | } | |
17730 | else | |
17731 | { | |
17732 | dwarf2_invalid_attrib_class_complaint (dwarf_form_name (attr->form), | |
17733 | dwarf2_name (die, cu)); | |
17734 | return 0; | |
17735 | } | |
17736 | ||
17737 | return 1; | |
17738 | } | |
17739 | ||
a02abb62 JB |
17740 | /* Read the given DW_AT_subrange DIE. */ |
17741 | ||
f792889a | 17742 | static struct type * |
a02abb62 JB |
17743 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
17744 | { | |
4c9ad8c2 | 17745 | struct type *base_type, *orig_base_type; |
a02abb62 JB |
17746 | struct type *range_type; |
17747 | struct attribute *attr; | |
729efb13 | 17748 | struct dynamic_prop low, high; |
4fae6e18 | 17749 | int low_default_is_valid; |
c451ebe5 | 17750 | int high_bound_is_count = 0; |
15d034d0 | 17751 | const char *name; |
d359392f | 17752 | ULONGEST negative_mask; |
e77813c8 | 17753 | |
4c9ad8c2 TT |
17754 | orig_base_type = die_type (die, cu); |
17755 | /* If ORIG_BASE_TYPE is a typedef, it will not be TYPE_UNSIGNED, | |
17756 | whereas the real type might be. So, we use ORIG_BASE_TYPE when | |
17757 | creating the range type, but we use the result of check_typedef | |
17758 | when examining properties of the type. */ | |
17759 | base_type = check_typedef (orig_base_type); | |
a02abb62 | 17760 | |
7e314c57 JK |
17761 | /* The die_type call above may have already set the type for this DIE. */ |
17762 | range_type = get_die_type (die, cu); | |
17763 | if (range_type) | |
17764 | return range_type; | |
17765 | ||
729efb13 SA |
17766 | low.kind = PROP_CONST; |
17767 | high.kind = PROP_CONST; | |
17768 | high.data.const_val = 0; | |
17769 | ||
4fae6e18 JK |
17770 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
17771 | omitting DW_AT_lower_bound. */ | |
17772 | switch (cu->language) | |
6e70227d | 17773 | { |
4fae6e18 JK |
17774 | case language_c: |
17775 | case language_cplus: | |
729efb13 | 17776 | low.data.const_val = 0; |
4fae6e18 JK |
17777 | low_default_is_valid = 1; |
17778 | break; | |
17779 | case language_fortran: | |
729efb13 | 17780 | low.data.const_val = 1; |
4fae6e18 JK |
17781 | low_default_is_valid = 1; |
17782 | break; | |
17783 | case language_d: | |
4fae6e18 | 17784 | case language_objc: |
c44af4eb | 17785 | case language_rust: |
729efb13 | 17786 | low.data.const_val = 0; |
4fae6e18 JK |
17787 | low_default_is_valid = (cu->header.version >= 4); |
17788 | break; | |
17789 | case language_ada: | |
17790 | case language_m2: | |
17791 | case language_pascal: | |
729efb13 | 17792 | low.data.const_val = 1; |
4fae6e18 JK |
17793 | low_default_is_valid = (cu->header.version >= 4); |
17794 | break; | |
17795 | default: | |
729efb13 | 17796 | low.data.const_val = 0; |
4fae6e18 JK |
17797 | low_default_is_valid = 0; |
17798 | break; | |
a02abb62 JB |
17799 | } |
17800 | ||
e142c38c | 17801 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 | 17802 | if (attr) |
11c1ba78 | 17803 | attr_to_dynamic_prop (attr, die, cu, &low); |
4fae6e18 | 17804 | else if (!low_default_is_valid) |
b98664d3 | 17805 | complaint (_("Missing DW_AT_lower_bound " |
9d8780f0 SM |
17806 | "- DIE at %s [in module %s]"), |
17807 | sect_offset_str (die->sect_off), | |
518817b3 | 17808 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
a02abb62 | 17809 | |
506f5c41 TV |
17810 | struct attribute *attr_ub, *attr_count; |
17811 | attr = attr_ub = dwarf2_attr (die, DW_AT_upper_bound, cu); | |
80180f79 | 17812 | if (!attr_to_dynamic_prop (attr, die, cu, &high)) |
e77813c8 | 17813 | { |
506f5c41 | 17814 | attr = attr_count = dwarf2_attr (die, DW_AT_count, cu); |
c451ebe5 | 17815 | if (attr_to_dynamic_prop (attr, die, cu, &high)) |
6b662e19 | 17816 | { |
c451ebe5 SA |
17817 | /* If bounds are constant do the final calculation here. */ |
17818 | if (low.kind == PROP_CONST && high.kind == PROP_CONST) | |
17819 | high.data.const_val = low.data.const_val + high.data.const_val - 1; | |
17820 | else | |
17821 | high_bound_is_count = 1; | |
c2ff108b | 17822 | } |
506f5c41 TV |
17823 | else |
17824 | { | |
17825 | if (attr_ub != NULL) | |
17826 | complaint (_("Unresolved DW_AT_upper_bound " | |
17827 | "- DIE at %s [in module %s]"), | |
17828 | sect_offset_str (die->sect_off), | |
17829 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
17830 | if (attr_count != NULL) | |
17831 | complaint (_("Unresolved DW_AT_count " | |
17832 | "- DIE at %s [in module %s]"), | |
17833 | sect_offset_str (die->sect_off), | |
17834 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
17835 | } | |
17836 | ||
e77813c8 PM |
17837 | } |
17838 | ||
17839 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
17840 | without specifying a base type. | |
17841 | In that case, the base type must be set to the type of | |
17842 | the lower bound, upper bound or count, in that order, if any of these | |
17843 | three attributes references an object that has a type. | |
17844 | If no base type is found, the Dwarf-2 specifications say that | |
17845 | a signed integer type of size equal to the size of an address should | |
17846 | be used. | |
17847 | For the following C code: `extern char gdb_int [];' | |
17848 | GCC produces an empty range DIE. | |
17849 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
0963b4bd | 17850 | high bound or count are not yet handled by this code. */ |
e77813c8 PM |
17851 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) |
17852 | { | |
518817b3 | 17853 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e77813c8 PM |
17854 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
17855 | int addr_size = gdbarch_addr_bit (gdbarch) /8; | |
17856 | struct type *int_type = objfile_type (objfile)->builtin_int; | |
17857 | ||
17858 | /* Test "int", "long int", and "long long int" objfile types, | |
17859 | and select the first one having a size above or equal to the | |
17860 | architecture address size. */ | |
17861 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
17862 | base_type = int_type; | |
17863 | else | |
17864 | { | |
17865 | int_type = objfile_type (objfile)->builtin_long; | |
17866 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
17867 | base_type = int_type; | |
17868 | else | |
17869 | { | |
17870 | int_type = objfile_type (objfile)->builtin_long_long; | |
17871 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
17872 | base_type = int_type; | |
17873 | } | |
17874 | } | |
17875 | } | |
a02abb62 | 17876 | |
dbb9c2b1 JB |
17877 | /* Normally, the DWARF producers are expected to use a signed |
17878 | constant form (Eg. DW_FORM_sdata) to express negative bounds. | |
17879 | But this is unfortunately not always the case, as witnessed | |
17880 | with GCC, for instance, where the ambiguous DW_FORM_dataN form | |
17881 | is used instead. To work around that ambiguity, we treat | |
17882 | the bounds as signed, and thus sign-extend their values, when | |
17883 | the base type is signed. */ | |
6e70227d | 17884 | negative_mask = |
d359392f | 17885 | -((ULONGEST) 1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1)); |
729efb13 SA |
17886 | if (low.kind == PROP_CONST |
17887 | && !TYPE_UNSIGNED (base_type) && (low.data.const_val & negative_mask)) | |
17888 | low.data.const_val |= negative_mask; | |
17889 | if (high.kind == PROP_CONST | |
17890 | && !TYPE_UNSIGNED (base_type) && (high.data.const_val & negative_mask)) | |
17891 | high.data.const_val |= negative_mask; | |
43bbcdc2 | 17892 | |
729efb13 | 17893 | range_type = create_range_type (NULL, orig_base_type, &low, &high); |
a02abb62 | 17894 | |
c451ebe5 SA |
17895 | if (high_bound_is_count) |
17896 | TYPE_RANGE_DATA (range_type)->flag_upper_bound_is_count = 1; | |
17897 | ||
c2ff108b JK |
17898 | /* Ada expects an empty array on no boundary attributes. */ |
17899 | if (attr == NULL && cu->language != language_ada) | |
729efb13 | 17900 | TYPE_HIGH_BOUND_KIND (range_type) = PROP_UNDEFINED; |
c2ff108b | 17901 | |
39cbfefa DJ |
17902 | name = dwarf2_name (die, cu); |
17903 | if (name) | |
17904 | TYPE_NAME (range_type) = name; | |
6e70227d | 17905 | |
e142c38c | 17906 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
17907 | if (attr) |
17908 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
17909 | ||
2b4424c3 TT |
17910 | maybe_set_alignment (cu, die, range_type); |
17911 | ||
7e314c57 JK |
17912 | set_die_type (die, range_type, cu); |
17913 | ||
17914 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
17915 | set_descriptive_type (range_type, die, cu); |
17916 | ||
7e314c57 | 17917 | return range_type; |
a02abb62 | 17918 | } |
6e70227d | 17919 | |
f792889a | 17920 | static struct type * |
81a17f79 JB |
17921 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
17922 | { | |
17923 | struct type *type; | |
81a17f79 | 17924 | |
518817b3 SM |
17925 | type = init_type (cu->per_cu->dwarf2_per_objfile->objfile, TYPE_CODE_VOID,0, |
17926 | NULL); | |
0114d602 | 17927 | TYPE_NAME (type) = dwarf2_name (die, cu); |
81a17f79 | 17928 | |
74a2f8ff JB |
17929 | /* In Ada, an unspecified type is typically used when the description |
17930 | of the type is defered to a different unit. When encountering | |
17931 | such a type, we treat it as a stub, and try to resolve it later on, | |
17932 | when needed. */ | |
17933 | if (cu->language == language_ada) | |
17934 | TYPE_STUB (type) = 1; | |
17935 | ||
f792889a | 17936 | return set_die_type (die, type, cu); |
81a17f79 | 17937 | } |
a02abb62 | 17938 | |
639d11d3 DC |
17939 | /* Read a single die and all its descendents. Set the die's sibling |
17940 | field to NULL; set other fields in the die correctly, and set all | |
17941 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
17942 | location of the info_ptr after reading all of those dies. PARENT | |
17943 | is the parent of the die in question. */ | |
17944 | ||
17945 | static struct die_info * | |
dee91e82 | 17946 | read_die_and_children (const struct die_reader_specs *reader, |
d521ce57 TT |
17947 | const gdb_byte *info_ptr, |
17948 | const gdb_byte **new_info_ptr, | |
dee91e82 | 17949 | struct die_info *parent) |
639d11d3 DC |
17950 | { |
17951 | struct die_info *die; | |
d521ce57 | 17952 | const gdb_byte *cur_ptr; |
639d11d3 DC |
17953 | int has_children; |
17954 | ||
bf6af496 | 17955 | cur_ptr = read_full_die_1 (reader, &die, info_ptr, &has_children, 0); |
1d325ec1 DJ |
17956 | if (die == NULL) |
17957 | { | |
17958 | *new_info_ptr = cur_ptr; | |
17959 | return NULL; | |
17960 | } | |
93311388 | 17961 | store_in_ref_table (die, reader->cu); |
639d11d3 DC |
17962 | |
17963 | if (has_children) | |
bf6af496 | 17964 | die->child = read_die_and_siblings_1 (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
17965 | else |
17966 | { | |
17967 | die->child = NULL; | |
17968 | *new_info_ptr = cur_ptr; | |
17969 | } | |
17970 | ||
17971 | die->sibling = NULL; | |
17972 | die->parent = parent; | |
17973 | return die; | |
17974 | } | |
17975 | ||
17976 | /* Read a die, all of its descendents, and all of its siblings; set | |
17977 | all of the fields of all of the dies correctly. Arguments are as | |
17978 | in read_die_and_children. */ | |
17979 | ||
17980 | static struct die_info * | |
bf6af496 | 17981 | read_die_and_siblings_1 (const struct die_reader_specs *reader, |
d521ce57 TT |
17982 | const gdb_byte *info_ptr, |
17983 | const gdb_byte **new_info_ptr, | |
bf6af496 | 17984 | struct die_info *parent) |
639d11d3 DC |
17985 | { |
17986 | struct die_info *first_die, *last_sibling; | |
d521ce57 | 17987 | const gdb_byte *cur_ptr; |
639d11d3 | 17988 | |
c906108c | 17989 | cur_ptr = info_ptr; |
639d11d3 DC |
17990 | first_die = last_sibling = NULL; |
17991 | ||
17992 | while (1) | |
c906108c | 17993 | { |
639d11d3 | 17994 | struct die_info *die |
dee91e82 | 17995 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 17996 | |
1d325ec1 | 17997 | if (die == NULL) |
c906108c | 17998 | { |
639d11d3 DC |
17999 | *new_info_ptr = cur_ptr; |
18000 | return first_die; | |
c906108c | 18001 | } |
1d325ec1 DJ |
18002 | |
18003 | if (!first_die) | |
18004 | first_die = die; | |
c906108c | 18005 | else |
1d325ec1 DJ |
18006 | last_sibling->sibling = die; |
18007 | ||
18008 | last_sibling = die; | |
c906108c | 18009 | } |
c906108c SS |
18010 | } |
18011 | ||
bf6af496 DE |
18012 | /* Read a die, all of its descendents, and all of its siblings; set |
18013 | all of the fields of all of the dies correctly. Arguments are as | |
18014 | in read_die_and_children. | |
18015 | This the main entry point for reading a DIE and all its children. */ | |
18016 | ||
18017 | static struct die_info * | |
18018 | read_die_and_siblings (const struct die_reader_specs *reader, | |
d521ce57 TT |
18019 | const gdb_byte *info_ptr, |
18020 | const gdb_byte **new_info_ptr, | |
bf6af496 DE |
18021 | struct die_info *parent) |
18022 | { | |
18023 | struct die_info *die = read_die_and_siblings_1 (reader, info_ptr, | |
18024 | new_info_ptr, parent); | |
18025 | ||
b4f54984 | 18026 | if (dwarf_die_debug) |
bf6af496 DE |
18027 | { |
18028 | fprintf_unfiltered (gdb_stdlog, | |
18029 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 18030 | get_section_name (reader->die_section), |
bf6af496 DE |
18031 | (unsigned) (info_ptr - reader->die_section->buffer), |
18032 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 18033 | dump_die (die, dwarf_die_debug); |
bf6af496 DE |
18034 | } |
18035 | ||
18036 | return die; | |
18037 | } | |
18038 | ||
3019eac3 DE |
18039 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
18040 | attributes. | |
18041 | The caller is responsible for filling in the extra attributes | |
18042 | and updating (*DIEP)->num_attrs. | |
18043 | Set DIEP to point to a newly allocated die with its information, | |
18044 | except for its child, sibling, and parent fields. | |
18045 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
93311388 | 18046 | |
d521ce57 | 18047 | static const gdb_byte * |
3019eac3 | 18048 | read_full_die_1 (const struct die_reader_specs *reader, |
d521ce57 | 18049 | struct die_info **diep, const gdb_byte *info_ptr, |
3019eac3 | 18050 | int *has_children, int num_extra_attrs) |
93311388 | 18051 | { |
b64f50a1 | 18052 | unsigned int abbrev_number, bytes_read, i; |
93311388 DE |
18053 | struct abbrev_info *abbrev; |
18054 | struct die_info *die; | |
18055 | struct dwarf2_cu *cu = reader->cu; | |
18056 | bfd *abfd = reader->abfd; | |
18057 | ||
9c541725 | 18058 | sect_offset sect_off = (sect_offset) (info_ptr - reader->buffer); |
93311388 DE |
18059 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
18060 | info_ptr += bytes_read; | |
18061 | if (!abbrev_number) | |
18062 | { | |
18063 | *diep = NULL; | |
18064 | *has_children = 0; | |
18065 | return info_ptr; | |
18066 | } | |
18067 | ||
685af9cd | 18068 | abbrev = reader->abbrev_table->lookup_abbrev (abbrev_number); |
93311388 | 18069 | if (!abbrev) |
348e048f DE |
18070 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
18071 | abbrev_number, | |
18072 | bfd_get_filename (abfd)); | |
18073 | ||
3019eac3 | 18074 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
9c541725 | 18075 | die->sect_off = sect_off; |
93311388 DE |
18076 | die->tag = abbrev->tag; |
18077 | die->abbrev = abbrev_number; | |
18078 | ||
3019eac3 DE |
18079 | /* Make the result usable. |
18080 | The caller needs to update num_attrs after adding the extra | |
18081 | attributes. */ | |
93311388 DE |
18082 | die->num_attrs = abbrev->num_attrs; |
18083 | ||
18084 | for (i = 0; i < abbrev->num_attrs; ++i) | |
dee91e82 DE |
18085 | info_ptr = read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], |
18086 | info_ptr); | |
93311388 DE |
18087 | |
18088 | *diep = die; | |
18089 | *has_children = abbrev->has_children; | |
18090 | return info_ptr; | |
18091 | } | |
18092 | ||
3019eac3 DE |
18093 | /* Read a die and all its attributes. |
18094 | Set DIEP to point to a newly allocated die with its information, | |
18095 | except for its child, sibling, and parent fields. | |
18096 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
18097 | ||
d521ce57 | 18098 | static const gdb_byte * |
3019eac3 | 18099 | read_full_die (const struct die_reader_specs *reader, |
d521ce57 | 18100 | struct die_info **diep, const gdb_byte *info_ptr, |
3019eac3 DE |
18101 | int *has_children) |
18102 | { | |
d521ce57 | 18103 | const gdb_byte *result; |
bf6af496 DE |
18104 | |
18105 | result = read_full_die_1 (reader, diep, info_ptr, has_children, 0); | |
18106 | ||
b4f54984 | 18107 | if (dwarf_die_debug) |
bf6af496 DE |
18108 | { |
18109 | fprintf_unfiltered (gdb_stdlog, | |
18110 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 18111 | get_section_name (reader->die_section), |
bf6af496 DE |
18112 | (unsigned) (info_ptr - reader->die_section->buffer), |
18113 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 18114 | dump_die (*diep, dwarf_die_debug); |
bf6af496 DE |
18115 | } |
18116 | ||
18117 | return result; | |
3019eac3 | 18118 | } |
433df2d4 DE |
18119 | \f |
18120 | /* Abbreviation tables. | |
3019eac3 | 18121 | |
433df2d4 | 18122 | In DWARF version 2, the description of the debugging information is |
c906108c SS |
18123 | stored in a separate .debug_abbrev section. Before we read any |
18124 | dies from a section we read in all abbreviations and install them | |
433df2d4 DE |
18125 | in a hash table. */ |
18126 | ||
18127 | /* Allocate space for a struct abbrev_info object in ABBREV_TABLE. */ | |
18128 | ||
685af9cd TT |
18129 | struct abbrev_info * |
18130 | abbrev_table::alloc_abbrev () | |
433df2d4 DE |
18131 | { |
18132 | struct abbrev_info *abbrev; | |
18133 | ||
685af9cd | 18134 | abbrev = XOBNEW (&abbrev_obstack, struct abbrev_info); |
433df2d4 | 18135 | memset (abbrev, 0, sizeof (struct abbrev_info)); |
8d749320 | 18136 | |
433df2d4 DE |
18137 | return abbrev; |
18138 | } | |
18139 | ||
18140 | /* Add an abbreviation to the table. */ | |
c906108c | 18141 | |
685af9cd TT |
18142 | void |
18143 | abbrev_table::add_abbrev (unsigned int abbrev_number, | |
18144 | struct abbrev_info *abbrev) | |
433df2d4 DE |
18145 | { |
18146 | unsigned int hash_number; | |
18147 | ||
18148 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
4a17f768 YQ |
18149 | abbrev->next = m_abbrevs[hash_number]; |
18150 | m_abbrevs[hash_number] = abbrev; | |
433df2d4 | 18151 | } |
dee91e82 | 18152 | |
433df2d4 DE |
18153 | /* Look up an abbrev in the table. |
18154 | Returns NULL if the abbrev is not found. */ | |
18155 | ||
685af9cd TT |
18156 | struct abbrev_info * |
18157 | abbrev_table::lookup_abbrev (unsigned int abbrev_number) | |
c906108c | 18158 | { |
433df2d4 DE |
18159 | unsigned int hash_number; |
18160 | struct abbrev_info *abbrev; | |
18161 | ||
18162 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
4a17f768 | 18163 | abbrev = m_abbrevs[hash_number]; |
433df2d4 DE |
18164 | |
18165 | while (abbrev) | |
18166 | { | |
18167 | if (abbrev->number == abbrev_number) | |
18168 | return abbrev; | |
18169 | abbrev = abbrev->next; | |
18170 | } | |
18171 | return NULL; | |
18172 | } | |
18173 | ||
18174 | /* Read in an abbrev table. */ | |
18175 | ||
685af9cd | 18176 | static abbrev_table_up |
ed2dc618 SM |
18177 | abbrev_table_read_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
18178 | struct dwarf2_section_info *section, | |
9c541725 | 18179 | sect_offset sect_off) |
433df2d4 DE |
18180 | { |
18181 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
a32a8923 | 18182 | bfd *abfd = get_section_bfd_owner (section); |
d521ce57 | 18183 | const gdb_byte *abbrev_ptr; |
c906108c SS |
18184 | struct abbrev_info *cur_abbrev; |
18185 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
433df2d4 | 18186 | unsigned int abbrev_form; |
f3dd6933 DJ |
18187 | struct attr_abbrev *cur_attrs; |
18188 | unsigned int allocated_attrs; | |
c906108c | 18189 | |
685af9cd | 18190 | abbrev_table_up abbrev_table (new struct abbrev_table (sect_off)); |
c906108c | 18191 | |
433df2d4 | 18192 | dwarf2_read_section (objfile, section); |
9c541725 | 18193 | abbrev_ptr = section->buffer + to_underlying (sect_off); |
c906108c SS |
18194 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
18195 | abbrev_ptr += bytes_read; | |
18196 | ||
f3dd6933 | 18197 | allocated_attrs = ATTR_ALLOC_CHUNK; |
8d749320 | 18198 | cur_attrs = XNEWVEC (struct attr_abbrev, allocated_attrs); |
6e70227d | 18199 | |
0963b4bd | 18200 | /* Loop until we reach an abbrev number of 0. */ |
c906108c SS |
18201 | while (abbrev_number) |
18202 | { | |
685af9cd | 18203 | cur_abbrev = abbrev_table->alloc_abbrev (); |
c906108c SS |
18204 | |
18205 | /* read in abbrev header */ | |
18206 | cur_abbrev->number = abbrev_number; | |
aead7601 SM |
18207 | cur_abbrev->tag |
18208 | = (enum dwarf_tag) read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
c906108c SS |
18209 | abbrev_ptr += bytes_read; |
18210 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
18211 | abbrev_ptr += 1; | |
18212 | ||
18213 | /* now read in declarations */ | |
22d2f3ab | 18214 | for (;;) |
c906108c | 18215 | { |
43988095 JK |
18216 | LONGEST implicit_const; |
18217 | ||
22d2f3ab JK |
18218 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
18219 | abbrev_ptr += bytes_read; | |
18220 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
18221 | abbrev_ptr += bytes_read; | |
43988095 JK |
18222 | if (abbrev_form == DW_FORM_implicit_const) |
18223 | { | |
18224 | implicit_const = read_signed_leb128 (abfd, abbrev_ptr, | |
18225 | &bytes_read); | |
18226 | abbrev_ptr += bytes_read; | |
18227 | } | |
18228 | else | |
18229 | { | |
18230 | /* Initialize it due to a false compiler warning. */ | |
18231 | implicit_const = -1; | |
18232 | } | |
22d2f3ab JK |
18233 | |
18234 | if (abbrev_name == 0) | |
18235 | break; | |
18236 | ||
f3dd6933 | 18237 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 18238 | { |
f3dd6933 DJ |
18239 | allocated_attrs += ATTR_ALLOC_CHUNK; |
18240 | cur_attrs | |
224c3ddb | 18241 | = XRESIZEVEC (struct attr_abbrev, cur_attrs, allocated_attrs); |
c906108c | 18242 | } |
ae038cb0 | 18243 | |
aead7601 SM |
18244 | cur_attrs[cur_abbrev->num_attrs].name |
18245 | = (enum dwarf_attribute) abbrev_name; | |
22d2f3ab | 18246 | cur_attrs[cur_abbrev->num_attrs].form |
aead7601 | 18247 | = (enum dwarf_form) abbrev_form; |
43988095 | 18248 | cur_attrs[cur_abbrev->num_attrs].implicit_const = implicit_const; |
22d2f3ab | 18249 | ++cur_abbrev->num_attrs; |
c906108c SS |
18250 | } |
18251 | ||
8d749320 SM |
18252 | cur_abbrev->attrs = |
18253 | XOBNEWVEC (&abbrev_table->abbrev_obstack, struct attr_abbrev, | |
18254 | cur_abbrev->num_attrs); | |
f3dd6933 DJ |
18255 | memcpy (cur_abbrev->attrs, cur_attrs, |
18256 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
18257 | ||
685af9cd | 18258 | abbrev_table->add_abbrev (abbrev_number, cur_abbrev); |
c906108c SS |
18259 | |
18260 | /* Get next abbreviation. | |
18261 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
18262 | always properly terminated with an abbrev number of 0. |
18263 | Exit loop if we encounter an abbreviation which we have | |
18264 | already read (which means we are about to read the abbreviations | |
18265 | for the next compile unit) or if the end of the abbreviation | |
18266 | table is reached. */ | |
433df2d4 | 18267 | if ((unsigned int) (abbrev_ptr - section->buffer) >= section->size) |
c906108c SS |
18268 | break; |
18269 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
18270 | abbrev_ptr += bytes_read; | |
685af9cd | 18271 | if (abbrev_table->lookup_abbrev (abbrev_number) != NULL) |
c906108c SS |
18272 | break; |
18273 | } | |
f3dd6933 DJ |
18274 | |
18275 | xfree (cur_attrs); | |
433df2d4 | 18276 | return abbrev_table; |
c906108c SS |
18277 | } |
18278 | ||
72bf9492 DJ |
18279 | /* Returns nonzero if TAG represents a type that we might generate a partial |
18280 | symbol for. */ | |
18281 | ||
18282 | static int | |
18283 | is_type_tag_for_partial (int tag) | |
18284 | { | |
18285 | switch (tag) | |
18286 | { | |
18287 | #if 0 | |
18288 | /* Some types that would be reasonable to generate partial symbols for, | |
18289 | that we don't at present. */ | |
18290 | case DW_TAG_array_type: | |
18291 | case DW_TAG_file_type: | |
18292 | case DW_TAG_ptr_to_member_type: | |
18293 | case DW_TAG_set_type: | |
18294 | case DW_TAG_string_type: | |
18295 | case DW_TAG_subroutine_type: | |
18296 | #endif | |
18297 | case DW_TAG_base_type: | |
18298 | case DW_TAG_class_type: | |
680b30c7 | 18299 | case DW_TAG_interface_type: |
72bf9492 DJ |
18300 | case DW_TAG_enumeration_type: |
18301 | case DW_TAG_structure_type: | |
18302 | case DW_TAG_subrange_type: | |
18303 | case DW_TAG_typedef: | |
18304 | case DW_TAG_union_type: | |
18305 | return 1; | |
18306 | default: | |
18307 | return 0; | |
18308 | } | |
18309 | } | |
18310 | ||
18311 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
18312 | ||
18313 | static struct partial_die_info * | |
dee91e82 | 18314 | load_partial_dies (const struct die_reader_specs *reader, |
d521ce57 | 18315 | const gdb_byte *info_ptr, int building_psymtab) |
72bf9492 | 18316 | { |
dee91e82 | 18317 | struct dwarf2_cu *cu = reader->cu; |
518817b3 | 18318 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
72bf9492 | 18319 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; |
72bf9492 | 18320 | unsigned int bytes_read; |
5afb4e99 | 18321 | unsigned int load_all = 0; |
72bf9492 DJ |
18322 | int nesting_level = 1; |
18323 | ||
18324 | parent_die = NULL; | |
18325 | last_die = NULL; | |
18326 | ||
7adf1e79 DE |
18327 | gdb_assert (cu->per_cu != NULL); |
18328 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
18329 | load_all = 1; |
18330 | ||
72bf9492 DJ |
18331 | cu->partial_dies |
18332 | = htab_create_alloc_ex (cu->header.length / 12, | |
18333 | partial_die_hash, | |
18334 | partial_die_eq, | |
18335 | NULL, | |
18336 | &cu->comp_unit_obstack, | |
18337 | hashtab_obstack_allocate, | |
18338 | dummy_obstack_deallocate); | |
18339 | ||
72bf9492 DJ |
18340 | while (1) |
18341 | { | |
685af9cd | 18342 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); |
72bf9492 DJ |
18343 | |
18344 | /* A NULL abbrev means the end of a series of children. */ | |
18345 | if (abbrev == NULL) | |
18346 | { | |
18347 | if (--nesting_level == 0) | |
cd9983dd YQ |
18348 | return first_die; |
18349 | ||
72bf9492 DJ |
18350 | info_ptr += bytes_read; |
18351 | last_die = parent_die; | |
18352 | parent_die = parent_die->die_parent; | |
18353 | continue; | |
18354 | } | |
18355 | ||
98bfdba5 PA |
18356 | /* Check for template arguments. We never save these; if |
18357 | they're seen, we just mark the parent, and go on our way. */ | |
18358 | if (parent_die != NULL | |
18359 | && cu->language == language_cplus | |
18360 | && (abbrev->tag == DW_TAG_template_type_param | |
18361 | || abbrev->tag == DW_TAG_template_value_param)) | |
18362 | { | |
18363 | parent_die->has_template_arguments = 1; | |
18364 | ||
18365 | if (!load_all) | |
18366 | { | |
18367 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 18368 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
18369 | continue; |
18370 | } | |
18371 | } | |
18372 | ||
0d99eb77 | 18373 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
18374 | Skip their other children. */ |
18375 | if (!load_all | |
18376 | && cu->language == language_cplus | |
18377 | && parent_die != NULL | |
18378 | && parent_die->tag == DW_TAG_subprogram) | |
18379 | { | |
dee91e82 | 18380 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
18381 | continue; |
18382 | } | |
18383 | ||
5afb4e99 DJ |
18384 | /* Check whether this DIE is interesting enough to save. Normally |
18385 | we would not be interested in members here, but there may be | |
18386 | later variables referencing them via DW_AT_specification (for | |
18387 | static members). */ | |
18388 | if (!load_all | |
18389 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 18390 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
18391 | && abbrev->tag != DW_TAG_enumerator |
18392 | && abbrev->tag != DW_TAG_subprogram | |
b1dc1806 | 18393 | && abbrev->tag != DW_TAG_inlined_subroutine |
bc30ff58 | 18394 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 18395 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 18396 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 18397 | && abbrev->tag != DW_TAG_module |
95554aad | 18398 | && abbrev->tag != DW_TAG_member |
74921315 KS |
18399 | && abbrev->tag != DW_TAG_imported_unit |
18400 | && abbrev->tag != DW_TAG_imported_declaration) | |
72bf9492 DJ |
18401 | { |
18402 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 18403 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
18404 | continue; |
18405 | } | |
18406 | ||
6f06d47b YQ |
18407 | struct partial_die_info pdi ((sect_offset) (info_ptr - reader->buffer), |
18408 | abbrev); | |
cd9983dd | 18409 | |
48fbe735 | 18410 | info_ptr = pdi.read (reader, *abbrev, info_ptr + bytes_read); |
72bf9492 DJ |
18411 | |
18412 | /* This two-pass algorithm for processing partial symbols has a | |
18413 | high cost in cache pressure. Thus, handle some simple cases | |
18414 | here which cover the majority of C partial symbols. DIEs | |
18415 | which neither have specification tags in them, nor could have | |
18416 | specification tags elsewhere pointing at them, can simply be | |
18417 | processed and discarded. | |
18418 | ||
18419 | This segment is also optional; scan_partial_symbols and | |
18420 | add_partial_symbol will handle these DIEs if we chain | |
18421 | them in normally. When compilers which do not emit large | |
18422 | quantities of duplicate debug information are more common, | |
18423 | this code can probably be removed. */ | |
18424 | ||
18425 | /* Any complete simple types at the top level (pretty much all | |
18426 | of them, for a language without namespaces), can be processed | |
18427 | directly. */ | |
18428 | if (parent_die == NULL | |
cd9983dd YQ |
18429 | && pdi.has_specification == 0 |
18430 | && pdi.is_declaration == 0 | |
18431 | && ((pdi.tag == DW_TAG_typedef && !pdi.has_children) | |
18432 | || pdi.tag == DW_TAG_base_type | |
18433 | || pdi.tag == DW_TAG_subrange_type)) | |
72bf9492 | 18434 | { |
cd9983dd YQ |
18435 | if (building_psymtab && pdi.name != NULL) |
18436 | add_psymbol_to_list (pdi.name, strlen (pdi.name), 0, | |
79748972 | 18437 | VAR_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 18438 | psymbol_placement::STATIC, |
1762568f | 18439 | 0, cu->language, objfile); |
cd9983dd | 18440 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
18441 | continue; |
18442 | } | |
18443 | ||
d8228535 JK |
18444 | /* The exception for DW_TAG_typedef with has_children above is |
18445 | a workaround of GCC PR debug/47510. In the case of this complaint | |
a737d952 | 18446 | type_name_or_error will error on such types later. |
d8228535 JK |
18447 | |
18448 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
18449 | it could not find the child DIEs referenced later, this is checked | |
18450 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
18451 | ||
cd9983dd | 18452 | if (pdi.tag == DW_TAG_typedef && pdi.has_children) |
b98664d3 | 18453 | complaint (_("DW_TAG_typedef has childen - GCC PR debug/47510 bug " |
9d8780f0 | 18454 | "- DIE at %s [in module %s]"), |
cd9983dd | 18455 | sect_offset_str (pdi.sect_off), objfile_name (objfile)); |
d8228535 | 18456 | |
72bf9492 DJ |
18457 | /* If we're at the second level, and we're an enumerator, and |
18458 | our parent has no specification (meaning possibly lives in a | |
18459 | namespace elsewhere), then we can add the partial symbol now | |
18460 | instead of queueing it. */ | |
cd9983dd | 18461 | if (pdi.tag == DW_TAG_enumerator |
72bf9492 DJ |
18462 | && parent_die != NULL |
18463 | && parent_die->die_parent == NULL | |
18464 | && parent_die->tag == DW_TAG_enumeration_type | |
18465 | && parent_die->has_specification == 0) | |
18466 | { | |
cd9983dd | 18467 | if (pdi.name == NULL) |
b98664d3 | 18468 | complaint (_("malformed enumerator DIE ignored")); |
72bf9492 | 18469 | else if (building_psymtab) |
cd9983dd | 18470 | add_psymbol_to_list (pdi.name, strlen (pdi.name), 0, |
79748972 | 18471 | VAR_DOMAIN, LOC_CONST, -1, |
9c37b5ae | 18472 | cu->language == language_cplus |
75aedd27 TT |
18473 | ? psymbol_placement::GLOBAL |
18474 | : psymbol_placement::STATIC, | |
1762568f | 18475 | 0, cu->language, objfile); |
72bf9492 | 18476 | |
cd9983dd | 18477 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
18478 | continue; |
18479 | } | |
18480 | ||
cd9983dd | 18481 | struct partial_die_info *part_die |
6f06d47b | 18482 | = new (&cu->comp_unit_obstack) partial_die_info (pdi); |
cd9983dd | 18483 | |
72bf9492 DJ |
18484 | /* We'll save this DIE so link it in. */ |
18485 | part_die->die_parent = parent_die; | |
18486 | part_die->die_sibling = NULL; | |
18487 | part_die->die_child = NULL; | |
18488 | ||
18489 | if (last_die && last_die == parent_die) | |
18490 | last_die->die_child = part_die; | |
18491 | else if (last_die) | |
18492 | last_die->die_sibling = part_die; | |
18493 | ||
18494 | last_die = part_die; | |
18495 | ||
18496 | if (first_die == NULL) | |
18497 | first_die = part_die; | |
18498 | ||
18499 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
18500 | find interesting need to be in the hash table, because we | |
18501 | also have the parent/sibling/child chains; only those that we | |
18502 | might refer to by offset later during partial symbol reading. | |
18503 | ||
18504 | For now this means things that might have be the target of a | |
18505 | DW_AT_specification, DW_AT_abstract_origin, or | |
18506 | DW_AT_extension. DW_AT_extension will refer only to | |
18507 | namespaces; DW_AT_abstract_origin refers to functions (and | |
18508 | many things under the function DIE, but we do not recurse | |
18509 | into function DIEs during partial symbol reading) and | |
18510 | possibly variables as well; DW_AT_specification refers to | |
18511 | declarations. Declarations ought to have the DW_AT_declaration | |
18512 | flag. It happens that GCC forgets to put it in sometimes, but | |
18513 | only for functions, not for types. | |
18514 | ||
18515 | Adding more things than necessary to the hash table is harmless | |
18516 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
18517 | wasted time in find_partial_die, when we reread the compilation |
18518 | unit with load_all_dies set. */ | |
72bf9492 | 18519 | |
5afb4e99 | 18520 | if (load_all |
72929c62 | 18521 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 18522 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
18523 | || abbrev->tag == DW_TAG_variable |
18524 | || abbrev->tag == DW_TAG_namespace | |
18525 | || part_die->is_declaration) | |
18526 | { | |
18527 | void **slot; | |
18528 | ||
18529 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
9c541725 PA |
18530 | to_underlying (part_die->sect_off), |
18531 | INSERT); | |
72bf9492 DJ |
18532 | *slot = part_die; |
18533 | } | |
18534 | ||
72bf9492 | 18535 | /* For some DIEs we want to follow their children (if any). For C |
bc30ff58 | 18536 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
18537 | languages we have to, so that we can get at method physnames |
18538 | to infer fully qualified class names, for DW_AT_specification, | |
18539 | and for C++ template arguments. For C++, we also look one level | |
18540 | inside functions to find template arguments (if the name of the | |
18541 | function does not already contain the template arguments). | |
bc30ff58 JB |
18542 | |
18543 | For Ada, we need to scan the children of subprograms and lexical | |
18544 | blocks as well because Ada allows the definition of nested | |
18545 | entities that could be interesting for the debugger, such as | |
18546 | nested subprograms for instance. */ | |
72bf9492 | 18547 | if (last_die->has_children |
5afb4e99 DJ |
18548 | && (load_all |
18549 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 18550 | || last_die->tag == DW_TAG_module |
72bf9492 | 18551 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
18552 | || (cu->language == language_cplus |
18553 | && last_die->tag == DW_TAG_subprogram | |
18554 | && (last_die->name == NULL | |
18555 | || strchr (last_die->name, '<') == NULL)) | |
72bf9492 DJ |
18556 | || (cu->language != language_c |
18557 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 18558 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 18559 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 JB |
18560 | || last_die->tag == DW_TAG_union_type)) |
18561 | || (cu->language == language_ada | |
18562 | && (last_die->tag == DW_TAG_subprogram | |
18563 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
18564 | { |
18565 | nesting_level++; | |
18566 | parent_die = last_die; | |
18567 | continue; | |
18568 | } | |
18569 | ||
18570 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 18571 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
18572 | |
18573 | /* Back to the top, do it again. */ | |
18574 | } | |
18575 | } | |
18576 | ||
6f06d47b YQ |
18577 | partial_die_info::partial_die_info (sect_offset sect_off_, |
18578 | struct abbrev_info *abbrev) | |
18579 | : partial_die_info (sect_off_, abbrev->tag, abbrev->has_children) | |
18580 | { | |
18581 | } | |
18582 | ||
35cc7ed7 YQ |
18583 | /* Read a minimal amount of information into the minimal die structure. |
18584 | INFO_PTR should point just after the initial uleb128 of a DIE. */ | |
c906108c | 18585 | |
48fbe735 YQ |
18586 | const gdb_byte * |
18587 | partial_die_info::read (const struct die_reader_specs *reader, | |
18588 | const struct abbrev_info &abbrev, const gdb_byte *info_ptr) | |
c906108c | 18589 | { |
dee91e82 | 18590 | struct dwarf2_cu *cu = reader->cu; |
518817b3 SM |
18591 | struct dwarf2_per_objfile *dwarf2_per_objfile |
18592 | = cu->per_cu->dwarf2_per_objfile; | |
fa238c03 | 18593 | unsigned int i; |
c5aa993b | 18594 | int has_low_pc_attr = 0; |
c906108c | 18595 | int has_high_pc_attr = 0; |
91da1414 | 18596 | int high_pc_relative = 0; |
c906108c | 18597 | |
fd0a254f | 18598 | for (i = 0; i < abbrev.num_attrs; ++i) |
c906108c | 18599 | { |
48fbe735 YQ |
18600 | struct attribute attr; |
18601 | ||
fd0a254f | 18602 | info_ptr = read_attribute (reader, &attr, &abbrev.attrs[i], info_ptr); |
c906108c SS |
18603 | |
18604 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 18605 | partial symbol table. */ |
c906108c SS |
18606 | switch (attr.name) |
18607 | { | |
18608 | case DW_AT_name: | |
48fbe735 | 18609 | switch (tag) |
71c25dea TT |
18610 | { |
18611 | case DW_TAG_compile_unit: | |
95554aad | 18612 | case DW_TAG_partial_unit: |
348e048f | 18613 | case DW_TAG_type_unit: |
71c25dea TT |
18614 | /* Compilation units have a DW_AT_name that is a filename, not |
18615 | a source language identifier. */ | |
18616 | case DW_TAG_enumeration_type: | |
18617 | case DW_TAG_enumerator: | |
18618 | /* These tags always have simple identifiers already; no need | |
18619 | to canonicalize them. */ | |
48fbe735 | 18620 | name = DW_STRING (&attr); |
71c25dea TT |
18621 | break; |
18622 | default: | |
48fbe735 YQ |
18623 | { |
18624 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
18625 | ||
18626 | name | |
18627 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, | |
18628 | &objfile->per_bfd->storage_obstack); | |
18629 | } | |
71c25dea TT |
18630 | break; |
18631 | } | |
c906108c | 18632 | break; |
31ef98ae | 18633 | case DW_AT_linkage_name: |
c906108c | 18634 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
18635 | /* Note that both forms of linkage name might appear. We |
18636 | assume they will be the same, and we only store the last | |
18637 | one we see. */ | |
94af9270 | 18638 | if (cu->language == language_ada) |
48fbe735 YQ |
18639 | name = DW_STRING (&attr); |
18640 | linkage_name = DW_STRING (&attr); | |
c906108c SS |
18641 | break; |
18642 | case DW_AT_low_pc: | |
18643 | has_low_pc_attr = 1; | |
48fbe735 | 18644 | lowpc = attr_value_as_address (&attr); |
c906108c SS |
18645 | break; |
18646 | case DW_AT_high_pc: | |
18647 | has_high_pc_attr = 1; | |
48fbe735 | 18648 | highpc = attr_value_as_address (&attr); |
31aa7e4e JB |
18649 | if (cu->header.version >= 4 && attr_form_is_constant (&attr)) |
18650 | high_pc_relative = 1; | |
c906108c SS |
18651 | break; |
18652 | case DW_AT_location: | |
0963b4bd | 18653 | /* Support the .debug_loc offsets. */ |
8e19ed76 PS |
18654 | if (attr_form_is_block (&attr)) |
18655 | { | |
48fbe735 | 18656 | d.locdesc = DW_BLOCK (&attr); |
8e19ed76 | 18657 | } |
3690dd37 | 18658 | else if (attr_form_is_section_offset (&attr)) |
8e19ed76 | 18659 | { |
4d3c2250 | 18660 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
18661 | } |
18662 | else | |
18663 | { | |
4d3c2250 KB |
18664 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
18665 | "partial symbol information"); | |
8e19ed76 | 18666 | } |
c906108c | 18667 | break; |
c906108c | 18668 | case DW_AT_external: |
48fbe735 | 18669 | is_external = DW_UNSND (&attr); |
c906108c SS |
18670 | break; |
18671 | case DW_AT_declaration: | |
48fbe735 | 18672 | is_declaration = DW_UNSND (&attr); |
c906108c SS |
18673 | break; |
18674 | case DW_AT_type: | |
48fbe735 | 18675 | has_type = 1; |
c906108c SS |
18676 | break; |
18677 | case DW_AT_abstract_origin: | |
18678 | case DW_AT_specification: | |
72bf9492 | 18679 | case DW_AT_extension: |
48fbe735 YQ |
18680 | has_specification = 1; |
18681 | spec_offset = dwarf2_get_ref_die_offset (&attr); | |
18682 | spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt | |
36586728 | 18683 | || cu->per_cu->is_dwz); |
c906108c SS |
18684 | break; |
18685 | case DW_AT_sibling: | |
18686 | /* Ignore absolute siblings, they might point outside of | |
18687 | the current compile unit. */ | |
18688 | if (attr.form == DW_FORM_ref_addr) | |
b98664d3 | 18689 | complaint (_("ignoring absolute DW_AT_sibling")); |
c906108c | 18690 | else |
b9502d3f | 18691 | { |
48fbe735 | 18692 | const gdb_byte *buffer = reader->buffer; |
9c541725 PA |
18693 | sect_offset off = dwarf2_get_ref_die_offset (&attr); |
18694 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); | |
b9502d3f WN |
18695 | |
18696 | if (sibling_ptr < info_ptr) | |
b98664d3 | 18697 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 KS |
18698 | else if (sibling_ptr > reader->buffer_end) |
18699 | dwarf2_section_buffer_overflow_complaint (reader->die_section); | |
b9502d3f | 18700 | else |
48fbe735 | 18701 | sibling = sibling_ptr; |
b9502d3f | 18702 | } |
c906108c | 18703 | break; |
fa4028e9 | 18704 | case DW_AT_byte_size: |
48fbe735 | 18705 | has_byte_size = 1; |
fa4028e9 | 18706 | break; |
ff908ebf | 18707 | case DW_AT_const_value: |
48fbe735 | 18708 | has_const_value = 1; |
ff908ebf | 18709 | break; |
68511cec CES |
18710 | case DW_AT_calling_convention: |
18711 | /* DWARF doesn't provide a way to identify a program's source-level | |
18712 | entry point. DW_AT_calling_convention attributes are only meant | |
18713 | to describe functions' calling conventions. | |
18714 | ||
18715 | However, because it's a necessary piece of information in | |
0c1b455e TT |
18716 | Fortran, and before DWARF 4 DW_CC_program was the only |
18717 | piece of debugging information whose definition refers to | |
18718 | a 'main program' at all, several compilers marked Fortran | |
18719 | main programs with DW_CC_program --- even when those | |
18720 | functions use the standard calling conventions. | |
18721 | ||
18722 | Although DWARF now specifies a way to provide this | |
18723 | information, we support this practice for backward | |
18724 | compatibility. */ | |
68511cec | 18725 | if (DW_UNSND (&attr) == DW_CC_program |
0c1b455e | 18726 | && cu->language == language_fortran) |
48fbe735 | 18727 | main_subprogram = 1; |
68511cec | 18728 | break; |
481860b3 GB |
18729 | case DW_AT_inline: |
18730 | if (DW_UNSND (&attr) == DW_INL_inlined | |
18731 | || DW_UNSND (&attr) == DW_INL_declared_inlined) | |
48fbe735 | 18732 | may_be_inlined = 1; |
481860b3 | 18733 | break; |
95554aad TT |
18734 | |
18735 | case DW_AT_import: | |
48fbe735 | 18736 | if (tag == DW_TAG_imported_unit) |
36586728 | 18737 | { |
48fbe735 YQ |
18738 | d.sect_off = dwarf2_get_ref_die_offset (&attr); |
18739 | is_dwz = (attr.form == DW_FORM_GNU_ref_alt | |
36586728 TT |
18740 | || cu->per_cu->is_dwz); |
18741 | } | |
95554aad TT |
18742 | break; |
18743 | ||
0c1b455e | 18744 | case DW_AT_main_subprogram: |
48fbe735 | 18745 | main_subprogram = DW_UNSND (&attr); |
0c1b455e TT |
18746 | break; |
18747 | ||
c906108c SS |
18748 | default: |
18749 | break; | |
18750 | } | |
18751 | } | |
18752 | ||
91da1414 | 18753 | if (high_pc_relative) |
48fbe735 | 18754 | highpc += lowpc; |
91da1414 | 18755 | |
9373cf26 JK |
18756 | if (has_low_pc_attr && has_high_pc_attr) |
18757 | { | |
18758 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
18759 | eliminate duplicate copies of functions and vtables and such. | |
18760 | The linker will arbitrarily choose one and discard the others. | |
18761 | The AT_*_pc values for such functions refer to local labels in | |
18762 | these sections. If the section from that file was discarded, the | |
18763 | labels are not in the output, so the relocs get a value of 0. | |
18764 | If this is a discarded function, mark the pc bounds as invalid, | |
18765 | so that GDB will ignore it. */ | |
48fbe735 | 18766 | if (lowpc == 0 && !dwarf2_per_objfile->has_section_at_zero) |
9373cf26 | 18767 | { |
48fbe735 | 18768 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
bb5ed363 | 18769 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 | 18770 | |
b98664d3 | 18771 | complaint (_("DW_AT_low_pc %s is zero " |
9d8780f0 | 18772 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
18773 | paddress (gdbarch, lowpc), |
18774 | sect_offset_str (sect_off), | |
9d8780f0 | 18775 | objfile_name (objfile)); |
9373cf26 JK |
18776 | } |
18777 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
48fbe735 | 18778 | else if (lowpc >= highpc) |
9373cf26 | 18779 | { |
48fbe735 | 18780 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
bb5ed363 | 18781 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 | 18782 | |
b98664d3 | 18783 | complaint (_("DW_AT_low_pc %s is not < DW_AT_high_pc %s " |
9d8780f0 | 18784 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
18785 | paddress (gdbarch, lowpc), |
18786 | paddress (gdbarch, highpc), | |
18787 | sect_offset_str (sect_off), | |
9c541725 | 18788 | objfile_name (objfile)); |
9373cf26 JK |
18789 | } |
18790 | else | |
48fbe735 | 18791 | has_pc_info = 1; |
9373cf26 | 18792 | } |
85cbf3d3 | 18793 | |
c906108c SS |
18794 | return info_ptr; |
18795 | } | |
18796 | ||
72bf9492 DJ |
18797 | /* Find a cached partial DIE at OFFSET in CU. */ |
18798 | ||
d590ff25 YQ |
18799 | struct partial_die_info * |
18800 | dwarf2_cu::find_partial_die (sect_offset sect_off) | |
72bf9492 DJ |
18801 | { |
18802 | struct partial_die_info *lookup_die = NULL; | |
6f06d47b | 18803 | struct partial_die_info part_die (sect_off); |
72bf9492 | 18804 | |
9a3c8263 | 18805 | lookup_die = ((struct partial_die_info *) |
d590ff25 | 18806 | htab_find_with_hash (partial_dies, &part_die, |
9c541725 | 18807 | to_underlying (sect_off))); |
72bf9492 | 18808 | |
72bf9492 DJ |
18809 | return lookup_die; |
18810 | } | |
18811 | ||
348e048f DE |
18812 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
18813 | except in the case of .debug_types DIEs which do not reference | |
18814 | outside their CU (they do however referencing other types via | |
55f1336d | 18815 | DW_FORM_ref_sig8). */ |
72bf9492 DJ |
18816 | |
18817 | static struct partial_die_info * | |
9c541725 | 18818 | find_partial_die (sect_offset sect_off, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 18819 | { |
518817b3 SM |
18820 | struct dwarf2_per_objfile *dwarf2_per_objfile |
18821 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 18822 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
5afb4e99 DJ |
18823 | struct dwarf2_per_cu_data *per_cu = NULL; |
18824 | struct partial_die_info *pd = NULL; | |
72bf9492 | 18825 | |
36586728 | 18826 | if (offset_in_dwz == cu->per_cu->is_dwz |
9c541725 | 18827 | && offset_in_cu_p (&cu->header, sect_off)) |
5afb4e99 | 18828 | { |
d590ff25 | 18829 | pd = cu->find_partial_die (sect_off); |
5afb4e99 DJ |
18830 | if (pd != NULL) |
18831 | return pd; | |
0d99eb77 DE |
18832 | /* We missed recording what we needed. |
18833 | Load all dies and try again. */ | |
18834 | per_cu = cu->per_cu; | |
5afb4e99 | 18835 | } |
0d99eb77 DE |
18836 | else |
18837 | { | |
18838 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 18839 | if (cu->per_cu->is_debug_types) |
0d99eb77 | 18840 | { |
9d8780f0 SM |
18841 | error (_("Dwarf Error: Type Unit at offset %s contains" |
18842 | " external reference to offset %s [in module %s].\n"), | |
18843 | sect_offset_str (cu->header.sect_off), sect_offset_str (sect_off), | |
0d99eb77 DE |
18844 | bfd_get_filename (objfile->obfd)); |
18845 | } | |
9c541725 | 18846 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
ed2dc618 | 18847 | dwarf2_per_objfile); |
72bf9492 | 18848 | |
0d99eb77 DE |
18849 | if (per_cu->cu == NULL || per_cu->cu->partial_dies == NULL) |
18850 | load_partial_comp_unit (per_cu); | |
ae038cb0 | 18851 | |
0d99eb77 | 18852 | per_cu->cu->last_used = 0; |
d590ff25 | 18853 | pd = per_cu->cu->find_partial_die (sect_off); |
0d99eb77 | 18854 | } |
5afb4e99 | 18855 | |
dee91e82 DE |
18856 | /* If we didn't find it, and not all dies have been loaded, |
18857 | load them all and try again. */ | |
18858 | ||
5afb4e99 DJ |
18859 | if (pd == NULL && per_cu->load_all_dies == 0) |
18860 | { | |
5afb4e99 | 18861 | per_cu->load_all_dies = 1; |
fd820528 DE |
18862 | |
18863 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
18864 | THIS_CU->cu may already be in use. So we can't just free it and | |
18865 | replace its DIEs with the ones we read in. Instead, we leave those | |
18866 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
18867 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
18868 | set. */ | |
dee91e82 | 18869 | load_partial_comp_unit (per_cu); |
5afb4e99 | 18870 | |
d590ff25 | 18871 | pd = per_cu->cu->find_partial_die (sect_off); |
5afb4e99 DJ |
18872 | } |
18873 | ||
18874 | if (pd == NULL) | |
18875 | internal_error (__FILE__, __LINE__, | |
9d8780f0 | 18876 | _("could not find partial DIE %s " |
3e43a32a | 18877 | "in cache [from module %s]\n"), |
9d8780f0 | 18878 | sect_offset_str (sect_off), bfd_get_filename (objfile->obfd)); |
5afb4e99 | 18879 | return pd; |
72bf9492 DJ |
18880 | } |
18881 | ||
abc72ce4 DE |
18882 | /* See if we can figure out if the class lives in a namespace. We do |
18883 | this by looking for a member function; its demangled name will | |
18884 | contain namespace info, if there is any. */ | |
18885 | ||
18886 | static void | |
18887 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
18888 | struct dwarf2_cu *cu) | |
18889 | { | |
18890 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
18891 | what template types look like, because the demangler | |
18892 | frequently doesn't give the same name as the debug info. We | |
18893 | could fix this by only using the demangled name to get the | |
18894 | prefix (but see comment in read_structure_type). */ | |
18895 | ||
18896 | struct partial_die_info *real_pdi; | |
18897 | struct partial_die_info *child_pdi; | |
18898 | ||
18899 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
18900 | we should not do this. We'll prepend the parent's fully qualified | |
18901 | name when we create the partial symbol. */ | |
18902 | ||
18903 | real_pdi = struct_pdi; | |
18904 | while (real_pdi->has_specification) | |
36586728 TT |
18905 | real_pdi = find_partial_die (real_pdi->spec_offset, |
18906 | real_pdi->spec_is_dwz, cu); | |
abc72ce4 DE |
18907 | |
18908 | if (real_pdi->die_parent != NULL) | |
18909 | return; | |
18910 | ||
18911 | for (child_pdi = struct_pdi->die_child; | |
18912 | child_pdi != NULL; | |
18913 | child_pdi = child_pdi->die_sibling) | |
18914 | { | |
18915 | if (child_pdi->tag == DW_TAG_subprogram | |
18916 | && child_pdi->linkage_name != NULL) | |
18917 | { | |
18918 | char *actual_class_name | |
18919 | = language_class_name_from_physname (cu->language_defn, | |
18920 | child_pdi->linkage_name); | |
18921 | if (actual_class_name != NULL) | |
18922 | { | |
518817b3 | 18923 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
abc72ce4 | 18924 | struct_pdi->name |
224c3ddb | 18925 | = ((const char *) |
e3b94546 | 18926 | obstack_copy0 (&objfile->per_bfd->storage_obstack, |
224c3ddb SM |
18927 | actual_class_name, |
18928 | strlen (actual_class_name))); | |
abc72ce4 DE |
18929 | xfree (actual_class_name); |
18930 | } | |
18931 | break; | |
18932 | } | |
18933 | } | |
18934 | } | |
18935 | ||
52356b79 YQ |
18936 | void |
18937 | partial_die_info::fixup (struct dwarf2_cu *cu) | |
72bf9492 | 18938 | { |
abc72ce4 DE |
18939 | /* Once we've fixed up a die, there's no point in doing so again. |
18940 | This also avoids a memory leak if we were to call | |
18941 | guess_partial_die_structure_name multiple times. */ | |
52356b79 | 18942 | if (fixup_called) |
abc72ce4 DE |
18943 | return; |
18944 | ||
72bf9492 DJ |
18945 | /* If we found a reference attribute and the DIE has no name, try |
18946 | to find a name in the referred to DIE. */ | |
18947 | ||
52356b79 | 18948 | if (name == NULL && has_specification) |
72bf9492 DJ |
18949 | { |
18950 | struct partial_die_info *spec_die; | |
72bf9492 | 18951 | |
52356b79 | 18952 | spec_die = find_partial_die (spec_offset, spec_is_dwz, cu); |
72bf9492 | 18953 | |
52356b79 | 18954 | spec_die->fixup (cu); |
72bf9492 DJ |
18955 | |
18956 | if (spec_die->name) | |
18957 | { | |
52356b79 | 18958 | name = spec_die->name; |
72bf9492 DJ |
18959 | |
18960 | /* Copy DW_AT_external attribute if it is set. */ | |
18961 | if (spec_die->is_external) | |
52356b79 | 18962 | is_external = spec_die->is_external; |
72bf9492 DJ |
18963 | } |
18964 | } | |
18965 | ||
18966 | /* Set default names for some unnamed DIEs. */ | |
72bf9492 | 18967 | |
52356b79 YQ |
18968 | if (name == NULL && tag == DW_TAG_namespace) |
18969 | name = CP_ANONYMOUS_NAMESPACE_STR; | |
72bf9492 | 18970 | |
abc72ce4 DE |
18971 | /* If there is no parent die to provide a namespace, and there are |
18972 | children, see if we can determine the namespace from their linkage | |
122d1940 | 18973 | name. */ |
abc72ce4 | 18974 | if (cu->language == language_cplus |
518817b3 SM |
18975 | && !VEC_empty (dwarf2_section_info_def, |
18976 | cu->per_cu->dwarf2_per_objfile->types) | |
52356b79 YQ |
18977 | && die_parent == NULL |
18978 | && has_children | |
18979 | && (tag == DW_TAG_class_type | |
18980 | || tag == DW_TAG_structure_type | |
18981 | || tag == DW_TAG_union_type)) | |
18982 | guess_partial_die_structure_name (this, cu); | |
abc72ce4 | 18983 | |
53832f31 TT |
18984 | /* GCC might emit a nameless struct or union that has a linkage |
18985 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
52356b79 YQ |
18986 | if (name == NULL |
18987 | && (tag == DW_TAG_class_type | |
18988 | || tag == DW_TAG_interface_type | |
18989 | || tag == DW_TAG_structure_type | |
18990 | || tag == DW_TAG_union_type) | |
18991 | && linkage_name != NULL) | |
53832f31 TT |
18992 | { |
18993 | char *demangled; | |
18994 | ||
52356b79 | 18995 | demangled = gdb_demangle (linkage_name, DMGL_TYPES); |
53832f31 TT |
18996 | if (demangled) |
18997 | { | |
96408a79 SA |
18998 | const char *base; |
18999 | ||
19000 | /* Strip any leading namespaces/classes, keep only the base name. | |
19001 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
19002 | base = strrchr (demangled, ':'); | |
19003 | if (base && base > demangled && base[-1] == ':') | |
19004 | base++; | |
19005 | else | |
19006 | base = demangled; | |
19007 | ||
518817b3 | 19008 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
52356b79 | 19009 | name |
224c3ddb | 19010 | = ((const char *) |
e3b94546 | 19011 | obstack_copy0 (&objfile->per_bfd->storage_obstack, |
224c3ddb | 19012 | base, strlen (base))); |
53832f31 TT |
19013 | xfree (demangled); |
19014 | } | |
19015 | } | |
19016 | ||
52356b79 | 19017 | fixup_called = 1; |
72bf9492 DJ |
19018 | } |
19019 | ||
a8329558 | 19020 | /* Read an attribute value described by an attribute form. */ |
c906108c | 19021 | |
d521ce57 | 19022 | static const gdb_byte * |
dee91e82 DE |
19023 | read_attribute_value (const struct die_reader_specs *reader, |
19024 | struct attribute *attr, unsigned form, | |
43988095 | 19025 | LONGEST implicit_const, const gdb_byte *info_ptr) |
c906108c | 19026 | { |
dee91e82 | 19027 | struct dwarf2_cu *cu = reader->cu; |
518817b3 SM |
19028 | struct dwarf2_per_objfile *dwarf2_per_objfile |
19029 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 19030 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 19031 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
dee91e82 | 19032 | bfd *abfd = reader->abfd; |
e7c27a73 | 19033 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
19034 | unsigned int bytes_read; |
19035 | struct dwarf_block *blk; | |
19036 | ||
aead7601 | 19037 | attr->form = (enum dwarf_form) form; |
a8329558 | 19038 | switch (form) |
c906108c | 19039 | { |
c906108c | 19040 | case DW_FORM_ref_addr: |
ae411497 | 19041 | if (cu->header.version == 2) |
4568ecf9 | 19042 | DW_UNSND (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
ae411497 | 19043 | else |
4568ecf9 DE |
19044 | DW_UNSND (attr) = read_offset (abfd, info_ptr, |
19045 | &cu->header, &bytes_read); | |
ae411497 TT |
19046 | info_ptr += bytes_read; |
19047 | break; | |
36586728 TT |
19048 | case DW_FORM_GNU_ref_alt: |
19049 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
19050 | info_ptr += bytes_read; | |
19051 | break; | |
ae411497 | 19052 | case DW_FORM_addr: |
e7c27a73 | 19053 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
3e29f34a | 19054 | DW_ADDR (attr) = gdbarch_adjust_dwarf2_addr (gdbarch, DW_ADDR (attr)); |
107d2387 | 19055 | info_ptr += bytes_read; |
c906108c SS |
19056 | break; |
19057 | case DW_FORM_block2: | |
7b5a2f43 | 19058 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19059 | blk->size = read_2_bytes (abfd, info_ptr); |
19060 | info_ptr += 2; | |
19061 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19062 | info_ptr += blk->size; | |
19063 | DW_BLOCK (attr) = blk; | |
19064 | break; | |
19065 | case DW_FORM_block4: | |
7b5a2f43 | 19066 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19067 | blk->size = read_4_bytes (abfd, info_ptr); |
19068 | info_ptr += 4; | |
19069 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19070 | info_ptr += blk->size; | |
19071 | DW_BLOCK (attr) = blk; | |
19072 | break; | |
19073 | case DW_FORM_data2: | |
19074 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
19075 | info_ptr += 2; | |
19076 | break; | |
19077 | case DW_FORM_data4: | |
19078 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
19079 | info_ptr += 4; | |
19080 | break; | |
19081 | case DW_FORM_data8: | |
19082 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
19083 | info_ptr += 8; | |
19084 | break; | |
0224619f JK |
19085 | case DW_FORM_data16: |
19086 | blk = dwarf_alloc_block (cu); | |
19087 | blk->size = 16; | |
19088 | blk->data = read_n_bytes (abfd, info_ptr, 16); | |
19089 | info_ptr += 16; | |
19090 | DW_BLOCK (attr) = blk; | |
19091 | break; | |
2dc7f7b3 TT |
19092 | case DW_FORM_sec_offset: |
19093 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
19094 | info_ptr += bytes_read; | |
19095 | break; | |
c906108c | 19096 | case DW_FORM_string: |
9b1c24c8 | 19097 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 19098 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
19099 | info_ptr += bytes_read; |
19100 | break; | |
4bdf3d34 | 19101 | case DW_FORM_strp: |
36586728 TT |
19102 | if (!cu->per_cu->is_dwz) |
19103 | { | |
ed2dc618 SM |
19104 | DW_STRING (attr) = read_indirect_string (dwarf2_per_objfile, |
19105 | abfd, info_ptr, cu_header, | |
36586728 TT |
19106 | &bytes_read); |
19107 | DW_STRING_IS_CANONICAL (attr) = 0; | |
19108 | info_ptr += bytes_read; | |
19109 | break; | |
19110 | } | |
19111 | /* FALLTHROUGH */ | |
43988095 JK |
19112 | case DW_FORM_line_strp: |
19113 | if (!cu->per_cu->is_dwz) | |
19114 | { | |
ed2dc618 SM |
19115 | DW_STRING (attr) = read_indirect_line_string (dwarf2_per_objfile, |
19116 | abfd, info_ptr, | |
43988095 JK |
19117 | cu_header, &bytes_read); |
19118 | DW_STRING_IS_CANONICAL (attr) = 0; | |
19119 | info_ptr += bytes_read; | |
19120 | break; | |
19121 | } | |
19122 | /* FALLTHROUGH */ | |
36586728 TT |
19123 | case DW_FORM_GNU_strp_alt: |
19124 | { | |
ed2dc618 | 19125 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
36586728 TT |
19126 | LONGEST str_offset = read_offset (abfd, info_ptr, cu_header, |
19127 | &bytes_read); | |
19128 | ||
ed2dc618 SM |
19129 | DW_STRING (attr) = read_indirect_string_from_dwz (objfile, |
19130 | dwz, str_offset); | |
36586728 TT |
19131 | DW_STRING_IS_CANONICAL (attr) = 0; |
19132 | info_ptr += bytes_read; | |
19133 | } | |
4bdf3d34 | 19134 | break; |
2dc7f7b3 | 19135 | case DW_FORM_exprloc: |
c906108c | 19136 | case DW_FORM_block: |
7b5a2f43 | 19137 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19138 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19139 | info_ptr += bytes_read; | |
19140 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19141 | info_ptr += blk->size; | |
19142 | DW_BLOCK (attr) = blk; | |
19143 | break; | |
19144 | case DW_FORM_block1: | |
7b5a2f43 | 19145 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19146 | blk->size = read_1_byte (abfd, info_ptr); |
19147 | info_ptr += 1; | |
19148 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19149 | info_ptr += blk->size; | |
19150 | DW_BLOCK (attr) = blk; | |
19151 | break; | |
19152 | case DW_FORM_data1: | |
19153 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
19154 | info_ptr += 1; | |
19155 | break; | |
19156 | case DW_FORM_flag: | |
19157 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
19158 | info_ptr += 1; | |
19159 | break; | |
2dc7f7b3 TT |
19160 | case DW_FORM_flag_present: |
19161 | DW_UNSND (attr) = 1; | |
19162 | break; | |
c906108c SS |
19163 | case DW_FORM_sdata: |
19164 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
19165 | info_ptr += bytes_read; | |
19166 | break; | |
19167 | case DW_FORM_udata: | |
19168 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
19169 | info_ptr += bytes_read; | |
19170 | break; | |
19171 | case DW_FORM_ref1: | |
9c541725 | 19172 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19173 | + read_1_byte (abfd, info_ptr)); |
c906108c SS |
19174 | info_ptr += 1; |
19175 | break; | |
19176 | case DW_FORM_ref2: | |
9c541725 | 19177 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19178 | + read_2_bytes (abfd, info_ptr)); |
c906108c SS |
19179 | info_ptr += 2; |
19180 | break; | |
19181 | case DW_FORM_ref4: | |
9c541725 | 19182 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19183 | + read_4_bytes (abfd, info_ptr)); |
c906108c SS |
19184 | info_ptr += 4; |
19185 | break; | |
613e1657 | 19186 | case DW_FORM_ref8: |
9c541725 | 19187 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19188 | + read_8_bytes (abfd, info_ptr)); |
613e1657 KB |
19189 | info_ptr += 8; |
19190 | break; | |
55f1336d | 19191 | case DW_FORM_ref_sig8: |
ac9ec31b | 19192 | DW_SIGNATURE (attr) = read_8_bytes (abfd, info_ptr); |
348e048f DE |
19193 | info_ptr += 8; |
19194 | break; | |
c906108c | 19195 | case DW_FORM_ref_udata: |
9c541725 | 19196 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19197 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); |
c906108c SS |
19198 | info_ptr += bytes_read; |
19199 | break; | |
c906108c | 19200 | case DW_FORM_indirect: |
a8329558 KW |
19201 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19202 | info_ptr += bytes_read; | |
43988095 JK |
19203 | if (form == DW_FORM_implicit_const) |
19204 | { | |
19205 | implicit_const = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
19206 | info_ptr += bytes_read; | |
19207 | } | |
19208 | info_ptr = read_attribute_value (reader, attr, form, implicit_const, | |
19209 | info_ptr); | |
19210 | break; | |
19211 | case DW_FORM_implicit_const: | |
19212 | DW_SND (attr) = implicit_const; | |
a8329558 | 19213 | break; |
3019eac3 DE |
19214 | case DW_FORM_GNU_addr_index: |
19215 | if (reader->dwo_file == NULL) | |
19216 | { | |
19217 | /* For now flag a hard error. | |
19218 | Later we can turn this into a complaint. */ | |
19219 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
19220 | dwarf_form_name (form), | |
19221 | bfd_get_filename (abfd)); | |
19222 | } | |
19223 | DW_ADDR (attr) = read_addr_index_from_leb128 (cu, info_ptr, &bytes_read); | |
19224 | info_ptr += bytes_read; | |
19225 | break; | |
19226 | case DW_FORM_GNU_str_index: | |
19227 | if (reader->dwo_file == NULL) | |
19228 | { | |
19229 | /* For now flag a hard error. | |
19230 | Later we can turn this into a complaint if warranted. */ | |
19231 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
19232 | dwarf_form_name (form), | |
19233 | bfd_get_filename (abfd)); | |
19234 | } | |
19235 | { | |
19236 | ULONGEST str_index = | |
19237 | read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
19238 | ||
342587c4 | 19239 | DW_STRING (attr) = read_str_index (reader, str_index); |
3019eac3 DE |
19240 | DW_STRING_IS_CANONICAL (attr) = 0; |
19241 | info_ptr += bytes_read; | |
19242 | } | |
19243 | break; | |
c906108c | 19244 | default: |
8a3fe4f8 | 19245 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
19246 | dwarf_form_name (form), |
19247 | bfd_get_filename (abfd)); | |
c906108c | 19248 | } |
28e94949 | 19249 | |
36586728 | 19250 | /* Super hack. */ |
7771576e | 19251 | if (cu->per_cu->is_dwz && attr_form_is_ref (attr)) |
36586728 TT |
19252 | attr->form = DW_FORM_GNU_ref_alt; |
19253 | ||
28e94949 JB |
19254 | /* We have seen instances where the compiler tried to emit a byte |
19255 | size attribute of -1 which ended up being encoded as an unsigned | |
19256 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
19257 | an object of this size seems pretty unlikely so we can relatively | |
19258 | safely treat these cases as if the size attribute was invalid and | |
19259 | treat them as zero by default. */ | |
19260 | if (attr->name == DW_AT_byte_size | |
19261 | && form == DW_FORM_data4 | |
19262 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
19263 | { |
19264 | complaint | |
b98664d3 | 19265 | (_("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
43bbcdc2 | 19266 | hex_string (DW_UNSND (attr))); |
01c66ae6 JB |
19267 | DW_UNSND (attr) = 0; |
19268 | } | |
28e94949 | 19269 | |
c906108c SS |
19270 | return info_ptr; |
19271 | } | |
19272 | ||
a8329558 KW |
19273 | /* Read an attribute described by an abbreviated attribute. */ |
19274 | ||
d521ce57 | 19275 | static const gdb_byte * |
dee91e82 DE |
19276 | read_attribute (const struct die_reader_specs *reader, |
19277 | struct attribute *attr, struct attr_abbrev *abbrev, | |
d521ce57 | 19278 | const gdb_byte *info_ptr) |
a8329558 KW |
19279 | { |
19280 | attr->name = abbrev->name; | |
43988095 JK |
19281 | return read_attribute_value (reader, attr, abbrev->form, |
19282 | abbrev->implicit_const, info_ptr); | |
a8329558 KW |
19283 | } |
19284 | ||
0963b4bd | 19285 | /* Read dwarf information from a buffer. */ |
c906108c SS |
19286 | |
19287 | static unsigned int | |
a1855c1d | 19288 | read_1_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 19289 | { |
fe1b8b76 | 19290 | return bfd_get_8 (abfd, buf); |
c906108c SS |
19291 | } |
19292 | ||
19293 | static int | |
a1855c1d | 19294 | read_1_signed_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 19295 | { |
fe1b8b76 | 19296 | return bfd_get_signed_8 (abfd, buf); |
c906108c SS |
19297 | } |
19298 | ||
19299 | static unsigned int | |
a1855c1d | 19300 | read_2_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 19301 | { |
fe1b8b76 | 19302 | return bfd_get_16 (abfd, buf); |
c906108c SS |
19303 | } |
19304 | ||
21ae7a4d | 19305 | static int |
a1855c1d | 19306 | read_2_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
19307 | { |
19308 | return bfd_get_signed_16 (abfd, buf); | |
19309 | } | |
19310 | ||
c906108c | 19311 | static unsigned int |
a1855c1d | 19312 | read_4_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 19313 | { |
fe1b8b76 | 19314 | return bfd_get_32 (abfd, buf); |
c906108c SS |
19315 | } |
19316 | ||
21ae7a4d | 19317 | static int |
a1855c1d | 19318 | read_4_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
19319 | { |
19320 | return bfd_get_signed_32 (abfd, buf); | |
19321 | } | |
19322 | ||
93311388 | 19323 | static ULONGEST |
a1855c1d | 19324 | read_8_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 19325 | { |
fe1b8b76 | 19326 | return bfd_get_64 (abfd, buf); |
c906108c SS |
19327 | } |
19328 | ||
19329 | static CORE_ADDR | |
d521ce57 | 19330 | read_address (bfd *abfd, const gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 19331 | unsigned int *bytes_read) |
c906108c | 19332 | { |
e7c27a73 | 19333 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
19334 | CORE_ADDR retval = 0; |
19335 | ||
107d2387 | 19336 | if (cu_header->signed_addr_p) |
c906108c | 19337 | { |
107d2387 AC |
19338 | switch (cu_header->addr_size) |
19339 | { | |
19340 | case 2: | |
fe1b8b76 | 19341 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
19342 | break; |
19343 | case 4: | |
fe1b8b76 | 19344 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
19345 | break; |
19346 | case 8: | |
fe1b8b76 | 19347 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
19348 | break; |
19349 | default: | |
8e65ff28 | 19350 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 19351 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 19352 | bfd_get_filename (abfd)); |
107d2387 AC |
19353 | } |
19354 | } | |
19355 | else | |
19356 | { | |
19357 | switch (cu_header->addr_size) | |
19358 | { | |
19359 | case 2: | |
fe1b8b76 | 19360 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
19361 | break; |
19362 | case 4: | |
fe1b8b76 | 19363 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
19364 | break; |
19365 | case 8: | |
fe1b8b76 | 19366 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
19367 | break; |
19368 | default: | |
8e65ff28 | 19369 | internal_error (__FILE__, __LINE__, |
a73c6dcd MS |
19370 | _("read_address: bad switch, " |
19371 | "unsigned [in module %s]"), | |
659b0389 | 19372 | bfd_get_filename (abfd)); |
107d2387 | 19373 | } |
c906108c | 19374 | } |
64367e0a | 19375 | |
107d2387 AC |
19376 | *bytes_read = cu_header->addr_size; |
19377 | return retval; | |
c906108c SS |
19378 | } |
19379 | ||
f7ef9339 | 19380 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
19381 | specification allows the initial length to take up either 4 bytes |
19382 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
19383 | bytes describe the length and all offsets will be 8 bytes in length | |
19384 | instead of 4. | |
19385 | ||
f7ef9339 KB |
19386 | An older, non-standard 64-bit format is also handled by this |
19387 | function. The older format in question stores the initial length | |
19388 | as an 8-byte quantity without an escape value. Lengths greater | |
19389 | than 2^32 aren't very common which means that the initial 4 bytes | |
19390 | is almost always zero. Since a length value of zero doesn't make | |
19391 | sense for the 32-bit format, this initial zero can be considered to | |
19392 | be an escape value which indicates the presence of the older 64-bit | |
19393 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
19394 | greater than 4GB. If it becomes necessary to handle lengths |
19395 | somewhat larger than 4GB, we could allow other small values (such | |
19396 | as the non-sensical values of 1, 2, and 3) to also be used as | |
19397 | escape values indicating the presence of the old format. | |
f7ef9339 | 19398 | |
917c78fc MK |
19399 | The value returned via bytes_read should be used to increment the |
19400 | relevant pointer after calling read_initial_length(). | |
c764a876 | 19401 | |
613e1657 KB |
19402 | [ Note: read_initial_length() and read_offset() are based on the |
19403 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 19404 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
19405 | from: |
19406 | ||
f7ef9339 | 19407 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
6e70227d | 19408 | |
613e1657 KB |
19409 | This document is only a draft and is subject to change. (So beware.) |
19410 | ||
f7ef9339 | 19411 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
19412 | determined empirically by examining 64-bit ELF files produced by |
19413 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
19414 | |
19415 | - Kevin, July 16, 2002 | |
613e1657 KB |
19416 | ] */ |
19417 | ||
19418 | static LONGEST | |
d521ce57 | 19419 | read_initial_length (bfd *abfd, const gdb_byte *buf, unsigned int *bytes_read) |
613e1657 | 19420 | { |
fe1b8b76 | 19421 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 19422 | |
dd373385 | 19423 | if (length == 0xffffffff) |
613e1657 | 19424 | { |
fe1b8b76 | 19425 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 19426 | *bytes_read = 12; |
613e1657 | 19427 | } |
dd373385 | 19428 | else if (length == 0) |
f7ef9339 | 19429 | { |
dd373385 | 19430 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 19431 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 19432 | *bytes_read = 8; |
f7ef9339 | 19433 | } |
613e1657 KB |
19434 | else |
19435 | { | |
19436 | *bytes_read = 4; | |
613e1657 KB |
19437 | } |
19438 | ||
c764a876 DE |
19439 | return length; |
19440 | } | |
dd373385 | 19441 | |
c764a876 DE |
19442 | /* Cover function for read_initial_length. |
19443 | Returns the length of the object at BUF, and stores the size of the | |
19444 | initial length in *BYTES_READ and stores the size that offsets will be in | |
19445 | *OFFSET_SIZE. | |
19446 | If the initial length size is not equivalent to that specified in | |
19447 | CU_HEADER then issue a complaint. | |
19448 | This is useful when reading non-comp-unit headers. */ | |
dd373385 | 19449 | |
c764a876 | 19450 | static LONGEST |
d521ce57 | 19451 | read_checked_initial_length_and_offset (bfd *abfd, const gdb_byte *buf, |
c764a876 DE |
19452 | const struct comp_unit_head *cu_header, |
19453 | unsigned int *bytes_read, | |
19454 | unsigned int *offset_size) | |
19455 | { | |
19456 | LONGEST length = read_initial_length (abfd, buf, bytes_read); | |
19457 | ||
19458 | gdb_assert (cu_header->initial_length_size == 4 | |
19459 | || cu_header->initial_length_size == 8 | |
19460 | || cu_header->initial_length_size == 12); | |
19461 | ||
19462 | if (cu_header->initial_length_size != *bytes_read) | |
b98664d3 | 19463 | complaint (_("intermixed 32-bit and 64-bit DWARF sections")); |
dd373385 | 19464 | |
c764a876 | 19465 | *offset_size = (*bytes_read == 4) ? 4 : 8; |
dd373385 | 19466 | return length; |
613e1657 KB |
19467 | } |
19468 | ||
19469 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 19470 | given by cu_header->offset_size. */ |
613e1657 KB |
19471 | |
19472 | static LONGEST | |
d521ce57 TT |
19473 | read_offset (bfd *abfd, const gdb_byte *buf, |
19474 | const struct comp_unit_head *cu_header, | |
891d2f0b | 19475 | unsigned int *bytes_read) |
c764a876 DE |
19476 | { |
19477 | LONGEST offset = read_offset_1 (abfd, buf, cu_header->offset_size); | |
9a619af0 | 19478 | |
c764a876 DE |
19479 | *bytes_read = cu_header->offset_size; |
19480 | return offset; | |
19481 | } | |
19482 | ||
19483 | /* Read an offset from the data stream. */ | |
19484 | ||
19485 | static LONGEST | |
d521ce57 | 19486 | read_offset_1 (bfd *abfd, const gdb_byte *buf, unsigned int offset_size) |
613e1657 KB |
19487 | { |
19488 | LONGEST retval = 0; | |
19489 | ||
c764a876 | 19490 | switch (offset_size) |
613e1657 KB |
19491 | { |
19492 | case 4: | |
fe1b8b76 | 19493 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
19494 | break; |
19495 | case 8: | |
fe1b8b76 | 19496 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
19497 | break; |
19498 | default: | |
8e65ff28 | 19499 | internal_error (__FILE__, __LINE__, |
c764a876 | 19500 | _("read_offset_1: bad switch [in module %s]"), |
659b0389 | 19501 | bfd_get_filename (abfd)); |
613e1657 KB |
19502 | } |
19503 | ||
917c78fc | 19504 | return retval; |
613e1657 KB |
19505 | } |
19506 | ||
d521ce57 TT |
19507 | static const gdb_byte * |
19508 | read_n_bytes (bfd *abfd, const gdb_byte *buf, unsigned int size) | |
c906108c SS |
19509 | { |
19510 | /* If the size of a host char is 8 bits, we can return a pointer | |
19511 | to the buffer, otherwise we have to copy the data to a buffer | |
19512 | allocated on the temporary obstack. */ | |
4bdf3d34 | 19513 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 19514 | return buf; |
c906108c SS |
19515 | } |
19516 | ||
d521ce57 TT |
19517 | static const char * |
19518 | read_direct_string (bfd *abfd, const gdb_byte *buf, | |
19519 | unsigned int *bytes_read_ptr) | |
c906108c SS |
19520 | { |
19521 | /* If the size of a host char is 8 bits, we can return a pointer | |
19522 | to the string, otherwise we have to copy the string to a buffer | |
19523 | allocated on the temporary obstack. */ | |
4bdf3d34 | 19524 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
19525 | if (*buf == '\0') |
19526 | { | |
19527 | *bytes_read_ptr = 1; | |
19528 | return NULL; | |
19529 | } | |
d521ce57 TT |
19530 | *bytes_read_ptr = strlen ((const char *) buf) + 1; |
19531 | return (const char *) buf; | |
4bdf3d34 JJ |
19532 | } |
19533 | ||
43988095 JK |
19534 | /* Return pointer to string at section SECT offset STR_OFFSET with error |
19535 | reporting strings FORM_NAME and SECT_NAME. */ | |
19536 | ||
d521ce57 | 19537 | static const char * |
ed2dc618 SM |
19538 | read_indirect_string_at_offset_from (struct objfile *objfile, |
19539 | bfd *abfd, LONGEST str_offset, | |
43988095 JK |
19540 | struct dwarf2_section_info *sect, |
19541 | const char *form_name, | |
19542 | const char *sect_name) | |
19543 | { | |
ed2dc618 | 19544 | dwarf2_read_section (objfile, sect); |
43988095 JK |
19545 | if (sect->buffer == NULL) |
19546 | error (_("%s used without %s section [in module %s]"), | |
19547 | form_name, sect_name, bfd_get_filename (abfd)); | |
19548 | if (str_offset >= sect->size) | |
19549 | error (_("%s pointing outside of %s section [in module %s]"), | |
19550 | form_name, sect_name, bfd_get_filename (abfd)); | |
4bdf3d34 | 19551 | gdb_assert (HOST_CHAR_BIT == 8); |
43988095 | 19552 | if (sect->buffer[str_offset] == '\0') |
4bdf3d34 | 19553 | return NULL; |
43988095 JK |
19554 | return (const char *) (sect->buffer + str_offset); |
19555 | } | |
19556 | ||
19557 | /* Return pointer to string at .debug_str offset STR_OFFSET. */ | |
19558 | ||
19559 | static const char * | |
ed2dc618 SM |
19560 | read_indirect_string_at_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19561 | bfd *abfd, LONGEST str_offset) | |
43988095 | 19562 | { |
ed2dc618 SM |
19563 | return read_indirect_string_at_offset_from (dwarf2_per_objfile->objfile, |
19564 | abfd, str_offset, | |
43988095 JK |
19565 | &dwarf2_per_objfile->str, |
19566 | "DW_FORM_strp", ".debug_str"); | |
19567 | } | |
19568 | ||
19569 | /* Return pointer to string at .debug_line_str offset STR_OFFSET. */ | |
19570 | ||
19571 | static const char * | |
ed2dc618 SM |
19572 | read_indirect_line_string_at_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19573 | bfd *abfd, LONGEST str_offset) | |
43988095 | 19574 | { |
ed2dc618 SM |
19575 | return read_indirect_string_at_offset_from (dwarf2_per_objfile->objfile, |
19576 | abfd, str_offset, | |
43988095 JK |
19577 | &dwarf2_per_objfile->line_str, |
19578 | "DW_FORM_line_strp", | |
19579 | ".debug_line_str"); | |
c906108c SS |
19580 | } |
19581 | ||
36586728 TT |
19582 | /* Read a string at offset STR_OFFSET in the .debug_str section from |
19583 | the .dwz file DWZ. Throw an error if the offset is too large. If | |
19584 | the string consists of a single NUL byte, return NULL; otherwise | |
19585 | return a pointer to the string. */ | |
19586 | ||
d521ce57 | 19587 | static const char * |
ed2dc618 SM |
19588 | read_indirect_string_from_dwz (struct objfile *objfile, struct dwz_file *dwz, |
19589 | LONGEST str_offset) | |
36586728 | 19590 | { |
ed2dc618 | 19591 | dwarf2_read_section (objfile, &dwz->str); |
36586728 TT |
19592 | |
19593 | if (dwz->str.buffer == NULL) | |
19594 | error (_("DW_FORM_GNU_strp_alt used without .debug_str " | |
19595 | "section [in module %s]"), | |
19596 | bfd_get_filename (dwz->dwz_bfd)); | |
19597 | if (str_offset >= dwz->str.size) | |
19598 | error (_("DW_FORM_GNU_strp_alt pointing outside of " | |
19599 | ".debug_str section [in module %s]"), | |
19600 | bfd_get_filename (dwz->dwz_bfd)); | |
19601 | gdb_assert (HOST_CHAR_BIT == 8); | |
19602 | if (dwz->str.buffer[str_offset] == '\0') | |
19603 | return NULL; | |
d521ce57 | 19604 | return (const char *) (dwz->str.buffer + str_offset); |
36586728 TT |
19605 | } |
19606 | ||
43988095 JK |
19607 | /* Return pointer to string at .debug_str offset as read from BUF. |
19608 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
19609 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
19610 | ||
d521ce57 | 19611 | static const char * |
ed2dc618 SM |
19612 | read_indirect_string (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *abfd, |
19613 | const gdb_byte *buf, | |
cf2c3c16 TT |
19614 | const struct comp_unit_head *cu_header, |
19615 | unsigned int *bytes_read_ptr) | |
19616 | { | |
19617 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
19618 | ||
ed2dc618 | 19619 | return read_indirect_string_at_offset (dwarf2_per_objfile, abfd, str_offset); |
cf2c3c16 TT |
19620 | } |
19621 | ||
43988095 JK |
19622 | /* Return pointer to string at .debug_line_str offset as read from BUF. |
19623 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
19624 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
19625 | ||
19626 | static const char * | |
ed2dc618 SM |
19627 | read_indirect_line_string (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19628 | bfd *abfd, const gdb_byte *buf, | |
43988095 JK |
19629 | const struct comp_unit_head *cu_header, |
19630 | unsigned int *bytes_read_ptr) | |
19631 | { | |
19632 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
19633 | ||
ed2dc618 SM |
19634 | return read_indirect_line_string_at_offset (dwarf2_per_objfile, abfd, |
19635 | str_offset); | |
43988095 JK |
19636 | } |
19637 | ||
19638 | ULONGEST | |
d521ce57 | 19639 | read_unsigned_leb128 (bfd *abfd, const gdb_byte *buf, |
43988095 | 19640 | unsigned int *bytes_read_ptr) |
c906108c | 19641 | { |
12df843f | 19642 | ULONGEST result; |
ce5d95e1 | 19643 | unsigned int num_read; |
870f88f7 | 19644 | int shift; |
c906108c SS |
19645 | unsigned char byte; |
19646 | ||
19647 | result = 0; | |
19648 | shift = 0; | |
19649 | num_read = 0; | |
c906108c SS |
19650 | while (1) |
19651 | { | |
fe1b8b76 | 19652 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
19653 | buf++; |
19654 | num_read++; | |
12df843f | 19655 | result |= ((ULONGEST) (byte & 127) << shift); |
c906108c SS |
19656 | if ((byte & 128) == 0) |
19657 | { | |
19658 | break; | |
19659 | } | |
19660 | shift += 7; | |
19661 | } | |
19662 | *bytes_read_ptr = num_read; | |
19663 | return result; | |
19664 | } | |
19665 | ||
12df843f | 19666 | static LONGEST |
d521ce57 TT |
19667 | read_signed_leb128 (bfd *abfd, const gdb_byte *buf, |
19668 | unsigned int *bytes_read_ptr) | |
c906108c | 19669 | { |
4dd1b460 | 19670 | ULONGEST result; |
870f88f7 | 19671 | int shift, num_read; |
c906108c SS |
19672 | unsigned char byte; |
19673 | ||
19674 | result = 0; | |
19675 | shift = 0; | |
c906108c | 19676 | num_read = 0; |
c906108c SS |
19677 | while (1) |
19678 | { | |
fe1b8b76 | 19679 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
19680 | buf++; |
19681 | num_read++; | |
4dd1b460 | 19682 | result |= ((ULONGEST) (byte & 127) << shift); |
c906108c SS |
19683 | shift += 7; |
19684 | if ((byte & 128) == 0) | |
19685 | { | |
19686 | break; | |
19687 | } | |
19688 | } | |
77e0b926 | 19689 | if ((shift < 8 * sizeof (result)) && (byte & 0x40)) |
4dd1b460 | 19690 | result |= -(((ULONGEST) 1) << shift); |
c906108c SS |
19691 | *bytes_read_ptr = num_read; |
19692 | return result; | |
19693 | } | |
19694 | ||
3019eac3 DE |
19695 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
19696 | ADDR_BASE is the DW_AT_GNU_addr_base attribute or zero. | |
19697 | ADDR_SIZE is the size of addresses from the CU header. */ | |
19698 | ||
19699 | static CORE_ADDR | |
ed2dc618 SM |
19700 | read_addr_index_1 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19701 | unsigned int addr_index, ULONGEST addr_base, int addr_size) | |
3019eac3 DE |
19702 | { |
19703 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
19704 | bfd *abfd = objfile->obfd; | |
19705 | const gdb_byte *info_ptr; | |
19706 | ||
19707 | dwarf2_read_section (objfile, &dwarf2_per_objfile->addr); | |
19708 | if (dwarf2_per_objfile->addr.buffer == NULL) | |
19709 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), | |
4262abfb | 19710 | objfile_name (objfile)); |
3019eac3 DE |
19711 | if (addr_base + addr_index * addr_size >= dwarf2_per_objfile->addr.size) |
19712 | error (_("DW_FORM_addr_index pointing outside of " | |
19713 | ".debug_addr section [in module %s]"), | |
4262abfb | 19714 | objfile_name (objfile)); |
3019eac3 DE |
19715 | info_ptr = (dwarf2_per_objfile->addr.buffer |
19716 | + addr_base + addr_index * addr_size); | |
19717 | if (addr_size == 4) | |
19718 | return bfd_get_32 (abfd, info_ptr); | |
19719 | else | |
19720 | return bfd_get_64 (abfd, info_ptr); | |
19721 | } | |
19722 | ||
19723 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
19724 | ||
19725 | static CORE_ADDR | |
19726 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
19727 | { | |
518817b3 SM |
19728 | return read_addr_index_1 (cu->per_cu->dwarf2_per_objfile, addr_index, |
19729 | cu->addr_base, cu->header.addr_size); | |
3019eac3 DE |
19730 | } |
19731 | ||
19732 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
19733 | ||
19734 | static CORE_ADDR | |
d521ce57 | 19735 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, const gdb_byte *info_ptr, |
3019eac3 DE |
19736 | unsigned int *bytes_read) |
19737 | { | |
518817b3 | 19738 | bfd *abfd = cu->per_cu->dwarf2_per_objfile->objfile->obfd; |
3019eac3 DE |
19739 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); |
19740 | ||
19741 | return read_addr_index (cu, addr_index); | |
19742 | } | |
19743 | ||
19744 | /* Data structure to pass results from dwarf2_read_addr_index_reader | |
19745 | back to dwarf2_read_addr_index. */ | |
19746 | ||
19747 | struct dwarf2_read_addr_index_data | |
19748 | { | |
19749 | ULONGEST addr_base; | |
19750 | int addr_size; | |
19751 | }; | |
19752 | ||
19753 | /* die_reader_func for dwarf2_read_addr_index. */ | |
19754 | ||
19755 | static void | |
19756 | dwarf2_read_addr_index_reader (const struct die_reader_specs *reader, | |
d521ce57 | 19757 | const gdb_byte *info_ptr, |
3019eac3 DE |
19758 | struct die_info *comp_unit_die, |
19759 | int has_children, | |
19760 | void *data) | |
19761 | { | |
19762 | struct dwarf2_cu *cu = reader->cu; | |
19763 | struct dwarf2_read_addr_index_data *aidata = | |
19764 | (struct dwarf2_read_addr_index_data *) data; | |
19765 | ||
19766 | aidata->addr_base = cu->addr_base; | |
19767 | aidata->addr_size = cu->header.addr_size; | |
19768 | } | |
19769 | ||
19770 | /* Given an index in .debug_addr, fetch the value. | |
19771 | NOTE: This can be called during dwarf expression evaluation, | |
19772 | long after the debug information has been read, and thus per_cu->cu | |
19773 | may no longer exist. */ | |
19774 | ||
19775 | CORE_ADDR | |
19776 | dwarf2_read_addr_index (struct dwarf2_per_cu_data *per_cu, | |
19777 | unsigned int addr_index) | |
19778 | { | |
ed2dc618 | 19779 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
3019eac3 DE |
19780 | struct dwarf2_cu *cu = per_cu->cu; |
19781 | ULONGEST addr_base; | |
19782 | int addr_size; | |
19783 | ||
3019eac3 DE |
19784 | /* We need addr_base and addr_size. |
19785 | If we don't have PER_CU->cu, we have to get it. | |
19786 | Nasty, but the alternative is storing the needed info in PER_CU, | |
19787 | which at this point doesn't seem justified: it's not clear how frequently | |
19788 | it would get used and it would increase the size of every PER_CU. | |
19789 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
19790 | so we're not in uncharted territory here. | |
19791 | Alas we need to be a bit more complicated as addr_base is contained | |
19792 | in the DIE. | |
19793 | ||
19794 | We don't need to read the entire CU(/TU). | |
19795 | We just need the header and top level die. | |
a1b64ce1 | 19796 | |
3019eac3 | 19797 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 19798 | For now we skip this optimization. */ |
3019eac3 DE |
19799 | |
19800 | if (cu != NULL) | |
19801 | { | |
19802 | addr_base = cu->addr_base; | |
19803 | addr_size = cu->header.addr_size; | |
19804 | } | |
19805 | else | |
19806 | { | |
19807 | struct dwarf2_read_addr_index_data aidata; | |
19808 | ||
a1b64ce1 DE |
19809 | /* Note: We can't use init_cutu_and_read_dies_simple here, |
19810 | we need addr_base. */ | |
58f0c718 | 19811 | init_cutu_and_read_dies (per_cu, NULL, 0, 0, false, |
a1b64ce1 | 19812 | dwarf2_read_addr_index_reader, &aidata); |
3019eac3 DE |
19813 | addr_base = aidata.addr_base; |
19814 | addr_size = aidata.addr_size; | |
19815 | } | |
19816 | ||
ed2dc618 SM |
19817 | return read_addr_index_1 (dwarf2_per_objfile, addr_index, addr_base, |
19818 | addr_size); | |
3019eac3 DE |
19819 | } |
19820 | ||
57d63ce2 DE |
19821 | /* Given a DW_FORM_GNU_str_index, fetch the string. |
19822 | This is only used by the Fission support. */ | |
3019eac3 | 19823 | |
d521ce57 | 19824 | static const char * |
342587c4 | 19825 | read_str_index (const struct die_reader_specs *reader, ULONGEST str_index) |
3019eac3 | 19826 | { |
ed2dc618 | 19827 | struct dwarf2_cu *cu = reader->cu; |
518817b3 SM |
19828 | struct dwarf2_per_objfile *dwarf2_per_objfile |
19829 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 | 19830 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
c5164cbc | 19831 | const char *objf_name = objfile_name (objfile); |
3019eac3 | 19832 | bfd *abfd = objfile->obfd; |
73869dc2 DE |
19833 | struct dwarf2_section_info *str_section = &reader->dwo_file->sections.str; |
19834 | struct dwarf2_section_info *str_offsets_section = | |
19835 | &reader->dwo_file->sections.str_offsets; | |
d521ce57 | 19836 | const gdb_byte *info_ptr; |
3019eac3 | 19837 | ULONGEST str_offset; |
57d63ce2 | 19838 | static const char form_name[] = "DW_FORM_GNU_str_index"; |
3019eac3 | 19839 | |
73869dc2 DE |
19840 | dwarf2_read_section (objfile, str_section); |
19841 | dwarf2_read_section (objfile, str_offsets_section); | |
19842 | if (str_section->buffer == NULL) | |
57d63ce2 | 19843 | error (_("%s used without .debug_str.dwo section" |
9d8780f0 SM |
19844 | " in CU at offset %s [in module %s]"), |
19845 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 19846 | if (str_offsets_section->buffer == NULL) |
57d63ce2 | 19847 | error (_("%s used without .debug_str_offsets.dwo section" |
9d8780f0 SM |
19848 | " in CU at offset %s [in module %s]"), |
19849 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 19850 | if (str_index * cu->header.offset_size >= str_offsets_section->size) |
57d63ce2 | 19851 | error (_("%s pointing outside of .debug_str_offsets.dwo" |
9d8780f0 SM |
19852 | " section in CU at offset %s [in module %s]"), |
19853 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 19854 | info_ptr = (str_offsets_section->buffer |
3019eac3 DE |
19855 | + str_index * cu->header.offset_size); |
19856 | if (cu->header.offset_size == 4) | |
19857 | str_offset = bfd_get_32 (abfd, info_ptr); | |
19858 | else | |
19859 | str_offset = bfd_get_64 (abfd, info_ptr); | |
73869dc2 | 19860 | if (str_offset >= str_section->size) |
57d63ce2 | 19861 | error (_("Offset from %s pointing outside of" |
9d8780f0 SM |
19862 | " .debug_str.dwo section in CU at offset %s [in module %s]"), |
19863 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 19864 | return (const char *) (str_section->buffer + str_offset); |
3019eac3 DE |
19865 | } |
19866 | ||
3019eac3 DE |
19867 | /* Return the length of an LEB128 number in BUF. */ |
19868 | ||
19869 | static int | |
19870 | leb128_size (const gdb_byte *buf) | |
19871 | { | |
19872 | const gdb_byte *begin = buf; | |
19873 | gdb_byte byte; | |
19874 | ||
19875 | while (1) | |
19876 | { | |
19877 | byte = *buf++; | |
19878 | if ((byte & 128) == 0) | |
19879 | return buf - begin; | |
19880 | } | |
19881 | } | |
19882 | ||
c906108c | 19883 | static void |
e142c38c | 19884 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
19885 | { |
19886 | switch (lang) | |
19887 | { | |
19888 | case DW_LANG_C89: | |
76bee0cc | 19889 | case DW_LANG_C99: |
0cfd832f | 19890 | case DW_LANG_C11: |
c906108c | 19891 | case DW_LANG_C: |
d1be3247 | 19892 | case DW_LANG_UPC: |
e142c38c | 19893 | cu->language = language_c; |
c906108c | 19894 | break; |
9c37b5ae | 19895 | case DW_LANG_Java: |
c906108c | 19896 | case DW_LANG_C_plus_plus: |
0cfd832f MW |
19897 | case DW_LANG_C_plus_plus_11: |
19898 | case DW_LANG_C_plus_plus_14: | |
e142c38c | 19899 | cu->language = language_cplus; |
c906108c | 19900 | break; |
6aecb9c2 JB |
19901 | case DW_LANG_D: |
19902 | cu->language = language_d; | |
19903 | break; | |
c906108c SS |
19904 | case DW_LANG_Fortran77: |
19905 | case DW_LANG_Fortran90: | |
b21b22e0 | 19906 | case DW_LANG_Fortran95: |
f7de9aab MW |
19907 | case DW_LANG_Fortran03: |
19908 | case DW_LANG_Fortran08: | |
e142c38c | 19909 | cu->language = language_fortran; |
c906108c | 19910 | break; |
a766d390 DE |
19911 | case DW_LANG_Go: |
19912 | cu->language = language_go; | |
19913 | break; | |
c906108c | 19914 | case DW_LANG_Mips_Assembler: |
e142c38c | 19915 | cu->language = language_asm; |
c906108c SS |
19916 | break; |
19917 | case DW_LANG_Ada83: | |
8aaf0b47 | 19918 | case DW_LANG_Ada95: |
bc5f45f8 JB |
19919 | cu->language = language_ada; |
19920 | break; | |
72019c9c GM |
19921 | case DW_LANG_Modula2: |
19922 | cu->language = language_m2; | |
19923 | break; | |
fe8e67fd PM |
19924 | case DW_LANG_Pascal83: |
19925 | cu->language = language_pascal; | |
19926 | break; | |
22566fbd DJ |
19927 | case DW_LANG_ObjC: |
19928 | cu->language = language_objc; | |
19929 | break; | |
c44af4eb TT |
19930 | case DW_LANG_Rust: |
19931 | case DW_LANG_Rust_old: | |
19932 | cu->language = language_rust; | |
19933 | break; | |
c906108c SS |
19934 | case DW_LANG_Cobol74: |
19935 | case DW_LANG_Cobol85: | |
c906108c | 19936 | default: |
e142c38c | 19937 | cu->language = language_minimal; |
c906108c SS |
19938 | break; |
19939 | } | |
e142c38c | 19940 | cu->language_defn = language_def (cu->language); |
c906108c SS |
19941 | } |
19942 | ||
19943 | /* Return the named attribute or NULL if not there. */ | |
19944 | ||
19945 | static struct attribute * | |
e142c38c | 19946 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 19947 | { |
a48e046c | 19948 | for (;;) |
c906108c | 19949 | { |
a48e046c TT |
19950 | unsigned int i; |
19951 | struct attribute *spec = NULL; | |
19952 | ||
19953 | for (i = 0; i < die->num_attrs; ++i) | |
19954 | { | |
19955 | if (die->attrs[i].name == name) | |
19956 | return &die->attrs[i]; | |
19957 | if (die->attrs[i].name == DW_AT_specification | |
19958 | || die->attrs[i].name == DW_AT_abstract_origin) | |
19959 | spec = &die->attrs[i]; | |
19960 | } | |
19961 | ||
19962 | if (!spec) | |
19963 | break; | |
c906108c | 19964 | |
f2f0e013 | 19965 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 19966 | } |
c5aa993b | 19967 | |
c906108c SS |
19968 | return NULL; |
19969 | } | |
19970 | ||
348e048f DE |
19971 | /* Return the named attribute or NULL if not there, |
19972 | but do not follow DW_AT_specification, etc. | |
19973 | This is for use in contexts where we're reading .debug_types dies. | |
19974 | Following DW_AT_specification, DW_AT_abstract_origin will take us | |
19975 | back up the chain, and we want to go down. */ | |
19976 | ||
19977 | static struct attribute * | |
45e58e77 | 19978 | dwarf2_attr_no_follow (struct die_info *die, unsigned int name) |
348e048f DE |
19979 | { |
19980 | unsigned int i; | |
19981 | ||
19982 | for (i = 0; i < die->num_attrs; ++i) | |
19983 | if (die->attrs[i].name == name) | |
19984 | return &die->attrs[i]; | |
19985 | ||
19986 | return NULL; | |
19987 | } | |
19988 | ||
7d45c7c3 KB |
19989 | /* Return the string associated with a string-typed attribute, or NULL if it |
19990 | is either not found or is of an incorrect type. */ | |
19991 | ||
19992 | static const char * | |
19993 | dwarf2_string_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) | |
19994 | { | |
19995 | struct attribute *attr; | |
19996 | const char *str = NULL; | |
19997 | ||
19998 | attr = dwarf2_attr (die, name, cu); | |
19999 | ||
20000 | if (attr != NULL) | |
20001 | { | |
43988095 | 20002 | if (attr->form == DW_FORM_strp || attr->form == DW_FORM_line_strp |
b3340438 L |
20003 | || attr->form == DW_FORM_string |
20004 | || attr->form == DW_FORM_GNU_str_index | |
16eb6b2d | 20005 | || attr->form == DW_FORM_GNU_strp_alt) |
7d45c7c3 KB |
20006 | str = DW_STRING (attr); |
20007 | else | |
b98664d3 | 20008 | complaint (_("string type expected for attribute %s for " |
9d8780f0 SM |
20009 | "DIE at %s in module %s"), |
20010 | dwarf_attr_name (name), sect_offset_str (die->sect_off), | |
518817b3 | 20011 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
7d45c7c3 KB |
20012 | } |
20013 | ||
20014 | return str; | |
20015 | } | |
20016 | ||
05cf31d1 JB |
20017 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
20018 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 20019 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
20020 | |
20021 | static int | |
20022 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
20023 | { | |
20024 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
20025 | ||
20026 | return (attr && DW_UNSND (attr)); | |
20027 | } | |
20028 | ||
3ca72b44 | 20029 | static int |
e142c38c | 20030 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 20031 | { |
05cf31d1 JB |
20032 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
20033 | which value is non-zero. However, we have to be careful with | |
20034 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
20035 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
20036 | end up accidently finding a declaration attribute that belongs | |
20037 | to a different DIE referenced by the specification attribute, | |
20038 | even though the given DIE does not have a declaration attribute. */ | |
20039 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
20040 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
20041 | } |
20042 | ||
63d06c5c | 20043 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 20044 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
20045 | containing the return value on output. If there is no |
20046 | specification, but there is an abstract origin, that is | |
20047 | returned. */ | |
63d06c5c DC |
20048 | |
20049 | static struct die_info * | |
f2f0e013 | 20050 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 20051 | { |
f2f0e013 DJ |
20052 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
20053 | *spec_cu); | |
63d06c5c | 20054 | |
edb3359d DJ |
20055 | if (spec_attr == NULL) |
20056 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
20057 | ||
63d06c5c DC |
20058 | if (spec_attr == NULL) |
20059 | return NULL; | |
20060 | else | |
f2f0e013 | 20061 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 20062 | } |
c906108c | 20063 | |
527f3840 JK |
20064 | /* Stub for free_line_header to match void * callback types. */ |
20065 | ||
20066 | static void | |
20067 | free_line_header_voidp (void *arg) | |
20068 | { | |
9a3c8263 | 20069 | struct line_header *lh = (struct line_header *) arg; |
527f3840 | 20070 | |
fff8551c | 20071 | delete lh; |
527f3840 JK |
20072 | } |
20073 | ||
fff8551c PA |
20074 | void |
20075 | line_header::add_include_dir (const char *include_dir) | |
c906108c | 20076 | { |
27e0867f | 20077 | if (dwarf_line_debug >= 2) |
fff8551c PA |
20078 | fprintf_unfiltered (gdb_stdlog, "Adding dir %zu: %s\n", |
20079 | include_dirs.size () + 1, include_dir); | |
27e0867f | 20080 | |
fff8551c | 20081 | include_dirs.push_back (include_dir); |
debd256d | 20082 | } |
6e70227d | 20083 | |
fff8551c PA |
20084 | void |
20085 | line_header::add_file_name (const char *name, | |
ecfb656c | 20086 | dir_index d_index, |
fff8551c PA |
20087 | unsigned int mod_time, |
20088 | unsigned int length) | |
debd256d | 20089 | { |
27e0867f DE |
20090 | if (dwarf_line_debug >= 2) |
20091 | fprintf_unfiltered (gdb_stdlog, "Adding file %u: %s\n", | |
fff8551c | 20092 | (unsigned) file_names.size () + 1, name); |
27e0867f | 20093 | |
ecfb656c | 20094 | file_names.emplace_back (name, d_index, mod_time, length); |
debd256d | 20095 | } |
6e70227d | 20096 | |
83769d0b | 20097 | /* A convenience function to find the proper .debug_line section for a CU. */ |
36586728 TT |
20098 | |
20099 | static struct dwarf2_section_info * | |
20100 | get_debug_line_section (struct dwarf2_cu *cu) | |
20101 | { | |
20102 | struct dwarf2_section_info *section; | |
518817b3 SM |
20103 | struct dwarf2_per_objfile *dwarf2_per_objfile |
20104 | = cu->per_cu->dwarf2_per_objfile; | |
36586728 TT |
20105 | |
20106 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
20107 | DWO file. */ | |
20108 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
20109 | section = &cu->dwo_unit->dwo_file->sections.line; | |
20110 | else if (cu->per_cu->is_dwz) | |
20111 | { | |
ed2dc618 | 20112 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
36586728 TT |
20113 | |
20114 | section = &dwz->line; | |
20115 | } | |
20116 | else | |
20117 | section = &dwarf2_per_objfile->line; | |
20118 | ||
20119 | return section; | |
20120 | } | |
20121 | ||
43988095 JK |
20122 | /* Read directory or file name entry format, starting with byte of |
20123 | format count entries, ULEB128 pairs of entry formats, ULEB128 of | |
20124 | entries count and the entries themselves in the described entry | |
20125 | format. */ | |
20126 | ||
20127 | static void | |
ed2dc618 SM |
20128 | read_formatted_entries (struct dwarf2_per_objfile *dwarf2_per_objfile, |
20129 | bfd *abfd, const gdb_byte **bufp, | |
43988095 JK |
20130 | struct line_header *lh, |
20131 | const struct comp_unit_head *cu_header, | |
20132 | void (*callback) (struct line_header *lh, | |
20133 | const char *name, | |
ecfb656c | 20134 | dir_index d_index, |
43988095 JK |
20135 | unsigned int mod_time, |
20136 | unsigned int length)) | |
20137 | { | |
20138 | gdb_byte format_count, formati; | |
20139 | ULONGEST data_count, datai; | |
20140 | const gdb_byte *buf = *bufp; | |
20141 | const gdb_byte *format_header_data; | |
43988095 JK |
20142 | unsigned int bytes_read; |
20143 | ||
20144 | format_count = read_1_byte (abfd, buf); | |
20145 | buf += 1; | |
20146 | format_header_data = buf; | |
20147 | for (formati = 0; formati < format_count; formati++) | |
20148 | { | |
20149 | read_unsigned_leb128 (abfd, buf, &bytes_read); | |
20150 | buf += bytes_read; | |
20151 | read_unsigned_leb128 (abfd, buf, &bytes_read); | |
20152 | buf += bytes_read; | |
20153 | } | |
20154 | ||
20155 | data_count = read_unsigned_leb128 (abfd, buf, &bytes_read); | |
20156 | buf += bytes_read; | |
20157 | for (datai = 0; datai < data_count; datai++) | |
20158 | { | |
20159 | const gdb_byte *format = format_header_data; | |
20160 | struct file_entry fe; | |
20161 | ||
43988095 JK |
20162 | for (formati = 0; formati < format_count; formati++) |
20163 | { | |
ecfb656c | 20164 | ULONGEST content_type = read_unsigned_leb128 (abfd, format, &bytes_read); |
43988095 | 20165 | format += bytes_read; |
43988095 | 20166 | |
ecfb656c | 20167 | ULONGEST form = read_unsigned_leb128 (abfd, format, &bytes_read); |
43988095 | 20168 | format += bytes_read; |
ecfb656c PA |
20169 | |
20170 | gdb::optional<const char *> string; | |
20171 | gdb::optional<unsigned int> uint; | |
20172 | ||
43988095 JK |
20173 | switch (form) |
20174 | { | |
20175 | case DW_FORM_string: | |
ecfb656c | 20176 | string.emplace (read_direct_string (abfd, buf, &bytes_read)); |
43988095 JK |
20177 | buf += bytes_read; |
20178 | break; | |
20179 | ||
20180 | case DW_FORM_line_strp: | |
ed2dc618 SM |
20181 | string.emplace (read_indirect_line_string (dwarf2_per_objfile, |
20182 | abfd, buf, | |
ecfb656c PA |
20183 | cu_header, |
20184 | &bytes_read)); | |
43988095 JK |
20185 | buf += bytes_read; |
20186 | break; | |
20187 | ||
20188 | case DW_FORM_data1: | |
ecfb656c | 20189 | uint.emplace (read_1_byte (abfd, buf)); |
43988095 JK |
20190 | buf += 1; |
20191 | break; | |
20192 | ||
20193 | case DW_FORM_data2: | |
ecfb656c | 20194 | uint.emplace (read_2_bytes (abfd, buf)); |
43988095 JK |
20195 | buf += 2; |
20196 | break; | |
20197 | ||
20198 | case DW_FORM_data4: | |
ecfb656c | 20199 | uint.emplace (read_4_bytes (abfd, buf)); |
43988095 JK |
20200 | buf += 4; |
20201 | break; | |
20202 | ||
20203 | case DW_FORM_data8: | |
ecfb656c | 20204 | uint.emplace (read_8_bytes (abfd, buf)); |
43988095 JK |
20205 | buf += 8; |
20206 | break; | |
20207 | ||
20208 | case DW_FORM_udata: | |
ecfb656c | 20209 | uint.emplace (read_unsigned_leb128 (abfd, buf, &bytes_read)); |
43988095 JK |
20210 | buf += bytes_read; |
20211 | break; | |
20212 | ||
20213 | case DW_FORM_block: | |
20214 | /* It is valid only for DW_LNCT_timestamp which is ignored by | |
20215 | current GDB. */ | |
20216 | break; | |
20217 | } | |
ecfb656c PA |
20218 | |
20219 | switch (content_type) | |
20220 | { | |
20221 | case DW_LNCT_path: | |
20222 | if (string.has_value ()) | |
20223 | fe.name = *string; | |
20224 | break; | |
20225 | case DW_LNCT_directory_index: | |
20226 | if (uint.has_value ()) | |
20227 | fe.d_index = (dir_index) *uint; | |
20228 | break; | |
20229 | case DW_LNCT_timestamp: | |
20230 | if (uint.has_value ()) | |
20231 | fe.mod_time = *uint; | |
20232 | break; | |
20233 | case DW_LNCT_size: | |
20234 | if (uint.has_value ()) | |
20235 | fe.length = *uint; | |
20236 | break; | |
20237 | case DW_LNCT_MD5: | |
20238 | break; | |
20239 | default: | |
b98664d3 | 20240 | complaint (_("Unknown format content type %s"), |
ecfb656c PA |
20241 | pulongest (content_type)); |
20242 | } | |
43988095 JK |
20243 | } |
20244 | ||
ecfb656c | 20245 | callback (lh, fe.name, fe.d_index, fe.mod_time, fe.length); |
43988095 JK |
20246 | } |
20247 | ||
20248 | *bufp = buf; | |
20249 | } | |
20250 | ||
debd256d | 20251 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 20252 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 20253 | to a struct line_header, allocated using xmalloc. |
cd366ee8 DE |
20254 | Returns NULL if there is a problem reading the header, e.g., if it |
20255 | has a version we don't understand. | |
debd256d JB |
20256 | |
20257 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
20258 | the returned object point into the dwarf line section buffer, |
20259 | and must not be freed. */ | |
ae2de4f8 | 20260 | |
fff8551c | 20261 | static line_header_up |
9c541725 | 20262 | dwarf_decode_line_header (sect_offset sect_off, struct dwarf2_cu *cu) |
debd256d | 20263 | { |
d521ce57 | 20264 | const gdb_byte *line_ptr; |
c764a876 | 20265 | unsigned int bytes_read, offset_size; |
debd256d | 20266 | int i; |
d521ce57 | 20267 | const char *cur_dir, *cur_file; |
3019eac3 DE |
20268 | struct dwarf2_section_info *section; |
20269 | bfd *abfd; | |
518817b3 SM |
20270 | struct dwarf2_per_objfile *dwarf2_per_objfile |
20271 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 | 20272 | |
36586728 | 20273 | section = get_debug_line_section (cu); |
3019eac3 DE |
20274 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); |
20275 | if (section->buffer == NULL) | |
debd256d | 20276 | { |
3019eac3 | 20277 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
b98664d3 | 20278 | complaint (_("missing .debug_line.dwo section")); |
3019eac3 | 20279 | else |
b98664d3 | 20280 | complaint (_("missing .debug_line section")); |
debd256d JB |
20281 | return 0; |
20282 | } | |
20283 | ||
fceca515 DE |
20284 | /* We can't do this until we know the section is non-empty. |
20285 | Only then do we know we have such a section. */ | |
a32a8923 | 20286 | abfd = get_section_bfd_owner (section); |
fceca515 | 20287 | |
a738430d MK |
20288 | /* Make sure that at least there's room for the total_length field. |
20289 | That could be 12 bytes long, but we're just going to fudge that. */ | |
9c541725 | 20290 | if (to_underlying (sect_off) + 4 >= section->size) |
debd256d | 20291 | { |
4d3c2250 | 20292 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
20293 | return 0; |
20294 | } | |
20295 | ||
fff8551c | 20296 | line_header_up lh (new line_header ()); |
debd256d | 20297 | |
9c541725 | 20298 | lh->sect_off = sect_off; |
527f3840 JK |
20299 | lh->offset_in_dwz = cu->per_cu->is_dwz; |
20300 | ||
9c541725 | 20301 | line_ptr = section->buffer + to_underlying (sect_off); |
debd256d | 20302 | |
a738430d | 20303 | /* Read in the header. */ |
6e70227d | 20304 | lh->total_length = |
c764a876 DE |
20305 | read_checked_initial_length_and_offset (abfd, line_ptr, &cu->header, |
20306 | &bytes_read, &offset_size); | |
debd256d | 20307 | line_ptr += bytes_read; |
3019eac3 | 20308 | if (line_ptr + lh->total_length > (section->buffer + section->size)) |
debd256d | 20309 | { |
4d3c2250 | 20310 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
20311 | return 0; |
20312 | } | |
20313 | lh->statement_program_end = line_ptr + lh->total_length; | |
20314 | lh->version = read_2_bytes (abfd, line_ptr); | |
20315 | line_ptr += 2; | |
43988095 | 20316 | if (lh->version > 5) |
cd366ee8 DE |
20317 | { |
20318 | /* This is a version we don't understand. The format could have | |
20319 | changed in ways we don't handle properly so just punt. */ | |
b98664d3 | 20320 | complaint (_("unsupported version in .debug_line section")); |
cd366ee8 DE |
20321 | return NULL; |
20322 | } | |
43988095 JK |
20323 | if (lh->version >= 5) |
20324 | { | |
20325 | gdb_byte segment_selector_size; | |
20326 | ||
20327 | /* Skip address size. */ | |
20328 | read_1_byte (abfd, line_ptr); | |
20329 | line_ptr += 1; | |
20330 | ||
20331 | segment_selector_size = read_1_byte (abfd, line_ptr); | |
20332 | line_ptr += 1; | |
20333 | if (segment_selector_size != 0) | |
20334 | { | |
b98664d3 | 20335 | complaint (_("unsupported segment selector size %u " |
43988095 JK |
20336 | "in .debug_line section"), |
20337 | segment_selector_size); | |
20338 | return NULL; | |
20339 | } | |
20340 | } | |
c764a876 DE |
20341 | lh->header_length = read_offset_1 (abfd, line_ptr, offset_size); |
20342 | line_ptr += offset_size; | |
debd256d JB |
20343 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); |
20344 | line_ptr += 1; | |
2dc7f7b3 TT |
20345 | if (lh->version >= 4) |
20346 | { | |
20347 | lh->maximum_ops_per_instruction = read_1_byte (abfd, line_ptr); | |
20348 | line_ptr += 1; | |
20349 | } | |
20350 | else | |
20351 | lh->maximum_ops_per_instruction = 1; | |
20352 | ||
20353 | if (lh->maximum_ops_per_instruction == 0) | |
20354 | { | |
20355 | lh->maximum_ops_per_instruction = 1; | |
b98664d3 | 20356 | complaint (_("invalid maximum_ops_per_instruction " |
3e43a32a | 20357 | "in `.debug_line' section")); |
2dc7f7b3 TT |
20358 | } |
20359 | ||
debd256d JB |
20360 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); |
20361 | line_ptr += 1; | |
20362 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
20363 | line_ptr += 1; | |
20364 | lh->line_range = read_1_byte (abfd, line_ptr); | |
20365 | line_ptr += 1; | |
20366 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
20367 | line_ptr += 1; | |
fff8551c | 20368 | lh->standard_opcode_lengths.reset (new unsigned char[lh->opcode_base]); |
debd256d JB |
20369 | |
20370 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
20371 | for (i = 1; i < lh->opcode_base; ++i) | |
20372 | { | |
20373 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
20374 | line_ptr += 1; | |
20375 | } | |
20376 | ||
43988095 | 20377 | if (lh->version >= 5) |
debd256d | 20378 | { |
43988095 | 20379 | /* Read directory table. */ |
ed2dc618 SM |
20380 | read_formatted_entries (dwarf2_per_objfile, abfd, &line_ptr, lh.get (), |
20381 | &cu->header, | |
b926417a | 20382 | [] (struct line_header *header, const char *name, |
ecfb656c | 20383 | dir_index d_index, unsigned int mod_time, |
fff8551c PA |
20384 | unsigned int length) |
20385 | { | |
b926417a | 20386 | header->add_include_dir (name); |
fff8551c | 20387 | }); |
debd256d | 20388 | |
43988095 | 20389 | /* Read file name table. */ |
ed2dc618 SM |
20390 | read_formatted_entries (dwarf2_per_objfile, abfd, &line_ptr, lh.get (), |
20391 | &cu->header, | |
b926417a | 20392 | [] (struct line_header *header, const char *name, |
ecfb656c | 20393 | dir_index d_index, unsigned int mod_time, |
fff8551c PA |
20394 | unsigned int length) |
20395 | { | |
b926417a | 20396 | header->add_file_name (name, d_index, mod_time, length); |
fff8551c | 20397 | }); |
43988095 JK |
20398 | } |
20399 | else | |
debd256d | 20400 | { |
43988095 JK |
20401 | /* Read directory table. */ |
20402 | while ((cur_dir = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) | |
20403 | { | |
20404 | line_ptr += bytes_read; | |
fff8551c | 20405 | lh->add_include_dir (cur_dir); |
43988095 | 20406 | } |
debd256d JB |
20407 | line_ptr += bytes_read; |
20408 | ||
43988095 JK |
20409 | /* Read file name table. */ |
20410 | while ((cur_file = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) | |
20411 | { | |
ecfb656c PA |
20412 | unsigned int mod_time, length; |
20413 | dir_index d_index; | |
43988095 JK |
20414 | |
20415 | line_ptr += bytes_read; | |
ecfb656c | 20416 | d_index = (dir_index) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
43988095 JK |
20417 | line_ptr += bytes_read; |
20418 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20419 | line_ptr += bytes_read; | |
20420 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20421 | line_ptr += bytes_read; | |
20422 | ||
ecfb656c | 20423 | lh->add_file_name (cur_file, d_index, mod_time, length); |
43988095 JK |
20424 | } |
20425 | line_ptr += bytes_read; | |
debd256d | 20426 | } |
6e70227d | 20427 | lh->statement_program_start = line_ptr; |
debd256d | 20428 | |
3019eac3 | 20429 | if (line_ptr > (section->buffer + section->size)) |
b98664d3 | 20430 | complaint (_("line number info header doesn't " |
3e43a32a | 20431 | "fit in `.debug_line' section")); |
debd256d | 20432 | |
debd256d JB |
20433 | return lh; |
20434 | } | |
c906108c | 20435 | |
c6da4cef DE |
20436 | /* Subroutine of dwarf_decode_lines to simplify it. |
20437 | Return the file name of the psymtab for included file FILE_INDEX | |
20438 | in line header LH of PST. | |
20439 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
c89b44cd TT |
20440 | If space for the result is malloc'd, *NAME_HOLDER will be set. |
20441 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. */ | |
c6da4cef | 20442 | |
d521ce57 | 20443 | static const char * |
c6da4cef DE |
20444 | psymtab_include_file_name (const struct line_header *lh, int file_index, |
20445 | const struct partial_symtab *pst, | |
c89b44cd TT |
20446 | const char *comp_dir, |
20447 | gdb::unique_xmalloc_ptr<char> *name_holder) | |
c6da4cef | 20448 | { |
8c43009f | 20449 | const file_entry &fe = lh->file_names[file_index]; |
d521ce57 TT |
20450 | const char *include_name = fe.name; |
20451 | const char *include_name_to_compare = include_name; | |
72b9f47f | 20452 | const char *pst_filename; |
c6da4cef DE |
20453 | int file_is_pst; |
20454 | ||
8c43009f | 20455 | const char *dir_name = fe.include_dir (lh); |
c6da4cef | 20456 | |
c89b44cd | 20457 | gdb::unique_xmalloc_ptr<char> hold_compare; |
c6da4cef DE |
20458 | if (!IS_ABSOLUTE_PATH (include_name) |
20459 | && (dir_name != NULL || comp_dir != NULL)) | |
20460 | { | |
20461 | /* Avoid creating a duplicate psymtab for PST. | |
20462 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
20463 | Before we do the comparison, however, we need to account | |
20464 | for DIR_NAME and COMP_DIR. | |
20465 | First prepend dir_name (if non-NULL). If we still don't | |
20466 | have an absolute path prepend comp_dir (if non-NULL). | |
20467 | However, the directory we record in the include-file's | |
20468 | psymtab does not contain COMP_DIR (to match the | |
20469 | corresponding symtab(s)). | |
20470 | ||
20471 | Example: | |
20472 | ||
20473 | bash$ cd /tmp | |
20474 | bash$ gcc -g ./hello.c | |
20475 | include_name = "hello.c" | |
20476 | dir_name = "." | |
20477 | DW_AT_comp_dir = comp_dir = "/tmp" | |
5f52445b YQ |
20478 | DW_AT_name = "./hello.c" |
20479 | ||
20480 | */ | |
c6da4cef DE |
20481 | |
20482 | if (dir_name != NULL) | |
20483 | { | |
c89b44cd TT |
20484 | name_holder->reset (concat (dir_name, SLASH_STRING, |
20485 | include_name, (char *) NULL)); | |
20486 | include_name = name_holder->get (); | |
c6da4cef | 20487 | include_name_to_compare = include_name; |
c6da4cef DE |
20488 | } |
20489 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
20490 | { | |
c89b44cd TT |
20491 | hold_compare.reset (concat (comp_dir, SLASH_STRING, |
20492 | include_name, (char *) NULL)); | |
20493 | include_name_to_compare = hold_compare.get (); | |
c6da4cef DE |
20494 | } |
20495 | } | |
20496 | ||
20497 | pst_filename = pst->filename; | |
c89b44cd | 20498 | gdb::unique_xmalloc_ptr<char> copied_name; |
c6da4cef DE |
20499 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) |
20500 | { | |
c89b44cd TT |
20501 | copied_name.reset (concat (pst->dirname, SLASH_STRING, |
20502 | pst_filename, (char *) NULL)); | |
20503 | pst_filename = copied_name.get (); | |
c6da4cef DE |
20504 | } |
20505 | ||
1e3fad37 | 20506 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef | 20507 | |
c6da4cef DE |
20508 | if (file_is_pst) |
20509 | return NULL; | |
20510 | return include_name; | |
20511 | } | |
20512 | ||
d9b3de22 DE |
20513 | /* State machine to track the state of the line number program. */ |
20514 | ||
6f77053d | 20515 | class lnp_state_machine |
d9b3de22 | 20516 | { |
6f77053d PA |
20517 | public: |
20518 | /* Initialize a machine state for the start of a line number | |
20519 | program. */ | |
804d2729 TT |
20520 | lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, line_header *lh, |
20521 | bool record_lines_p); | |
6f77053d | 20522 | |
8c43009f PA |
20523 | file_entry *current_file () |
20524 | { | |
20525 | /* lh->file_names is 0-based, but the file name numbers in the | |
20526 | statement program are 1-based. */ | |
6f77053d PA |
20527 | return m_line_header->file_name_at (m_file); |
20528 | } | |
20529 | ||
20530 | /* Record the line in the state machine. END_SEQUENCE is true if | |
20531 | we're processing the end of a sequence. */ | |
20532 | void record_line (bool end_sequence); | |
20533 | ||
7ab6656f OJ |
20534 | /* Check ADDRESS is zero and less than UNRELOCATED_LOWPC and if true |
20535 | nop-out rest of the lines in this sequence. */ | |
6f77053d PA |
20536 | void check_line_address (struct dwarf2_cu *cu, |
20537 | const gdb_byte *line_ptr, | |
7ab6656f | 20538 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address); |
6f77053d PA |
20539 | |
20540 | void handle_set_discriminator (unsigned int discriminator) | |
20541 | { | |
20542 | m_discriminator = discriminator; | |
20543 | m_line_has_non_zero_discriminator |= discriminator != 0; | |
20544 | } | |
20545 | ||
20546 | /* Handle DW_LNE_set_address. */ | |
20547 | void handle_set_address (CORE_ADDR baseaddr, CORE_ADDR address) | |
20548 | { | |
20549 | m_op_index = 0; | |
20550 | address += baseaddr; | |
20551 | m_address = gdbarch_adjust_dwarf2_line (m_gdbarch, address, false); | |
20552 | } | |
20553 | ||
20554 | /* Handle DW_LNS_advance_pc. */ | |
20555 | void handle_advance_pc (CORE_ADDR adjust); | |
20556 | ||
20557 | /* Handle a special opcode. */ | |
20558 | void handle_special_opcode (unsigned char op_code); | |
20559 | ||
20560 | /* Handle DW_LNS_advance_line. */ | |
20561 | void handle_advance_line (int line_delta) | |
20562 | { | |
20563 | advance_line (line_delta); | |
20564 | } | |
20565 | ||
20566 | /* Handle DW_LNS_set_file. */ | |
20567 | void handle_set_file (file_name_index file); | |
20568 | ||
20569 | /* Handle DW_LNS_negate_stmt. */ | |
20570 | void handle_negate_stmt () | |
20571 | { | |
20572 | m_is_stmt = !m_is_stmt; | |
20573 | } | |
20574 | ||
20575 | /* Handle DW_LNS_const_add_pc. */ | |
20576 | void handle_const_add_pc (); | |
20577 | ||
20578 | /* Handle DW_LNS_fixed_advance_pc. */ | |
20579 | void handle_fixed_advance_pc (CORE_ADDR addr_adj) | |
20580 | { | |
20581 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20582 | m_op_index = 0; | |
20583 | } | |
20584 | ||
20585 | /* Handle DW_LNS_copy. */ | |
20586 | void handle_copy () | |
20587 | { | |
20588 | record_line (false); | |
20589 | m_discriminator = 0; | |
20590 | } | |
20591 | ||
20592 | /* Handle DW_LNE_end_sequence. */ | |
20593 | void handle_end_sequence () | |
20594 | { | |
804d2729 | 20595 | m_currently_recording_lines = true; |
6f77053d PA |
20596 | } |
20597 | ||
20598 | private: | |
20599 | /* Advance the line by LINE_DELTA. */ | |
20600 | void advance_line (int line_delta) | |
20601 | { | |
20602 | m_line += line_delta; | |
20603 | ||
20604 | if (line_delta != 0) | |
20605 | m_line_has_non_zero_discriminator = m_discriminator != 0; | |
8c43009f PA |
20606 | } |
20607 | ||
804d2729 TT |
20608 | struct dwarf2_cu *m_cu; |
20609 | ||
6f77053d PA |
20610 | gdbarch *m_gdbarch; |
20611 | ||
20612 | /* True if we're recording lines. | |
20613 | Otherwise we're building partial symtabs and are just interested in | |
20614 | finding include files mentioned by the line number program. */ | |
20615 | bool m_record_lines_p; | |
20616 | ||
8c43009f | 20617 | /* The line number header. */ |
6f77053d | 20618 | line_header *m_line_header; |
8c43009f | 20619 | |
6f77053d PA |
20620 | /* These are part of the standard DWARF line number state machine, |
20621 | and initialized according to the DWARF spec. */ | |
d9b3de22 | 20622 | |
6f77053d | 20623 | unsigned char m_op_index = 0; |
8c43009f | 20624 | /* The line table index (1-based) of the current file. */ |
6f77053d PA |
20625 | file_name_index m_file = (file_name_index) 1; |
20626 | unsigned int m_line = 1; | |
20627 | ||
20628 | /* These are initialized in the constructor. */ | |
20629 | ||
20630 | CORE_ADDR m_address; | |
20631 | bool m_is_stmt; | |
20632 | unsigned int m_discriminator; | |
d9b3de22 DE |
20633 | |
20634 | /* Additional bits of state we need to track. */ | |
20635 | ||
20636 | /* The last file that we called dwarf2_start_subfile for. | |
20637 | This is only used for TLLs. */ | |
6f77053d | 20638 | unsigned int m_last_file = 0; |
d9b3de22 | 20639 | /* The last file a line number was recorded for. */ |
6f77053d | 20640 | struct subfile *m_last_subfile = NULL; |
d9b3de22 | 20641 | |
804d2729 TT |
20642 | /* When true, record the lines we decode. */ |
20643 | bool m_currently_recording_lines = false; | |
d9b3de22 DE |
20644 | |
20645 | /* The last line number that was recorded, used to coalesce | |
20646 | consecutive entries for the same line. This can happen, for | |
20647 | example, when discriminators are present. PR 17276. */ | |
6f77053d PA |
20648 | unsigned int m_last_line = 0; |
20649 | bool m_line_has_non_zero_discriminator = false; | |
8c43009f | 20650 | }; |
d9b3de22 | 20651 | |
6f77053d PA |
20652 | void |
20653 | lnp_state_machine::handle_advance_pc (CORE_ADDR adjust) | |
20654 | { | |
20655 | CORE_ADDR addr_adj = (((m_op_index + adjust) | |
20656 | / m_line_header->maximum_ops_per_instruction) | |
20657 | * m_line_header->minimum_instruction_length); | |
20658 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20659 | m_op_index = ((m_op_index + adjust) | |
20660 | % m_line_header->maximum_ops_per_instruction); | |
20661 | } | |
d9b3de22 | 20662 | |
6f77053d PA |
20663 | void |
20664 | lnp_state_machine::handle_special_opcode (unsigned char op_code) | |
d9b3de22 | 20665 | { |
6f77053d PA |
20666 | unsigned char adj_opcode = op_code - m_line_header->opcode_base; |
20667 | CORE_ADDR addr_adj = (((m_op_index | |
20668 | + (adj_opcode / m_line_header->line_range)) | |
20669 | / m_line_header->maximum_ops_per_instruction) | |
20670 | * m_line_header->minimum_instruction_length); | |
20671 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20672 | m_op_index = ((m_op_index + (adj_opcode / m_line_header->line_range)) | |
20673 | % m_line_header->maximum_ops_per_instruction); | |
d9b3de22 | 20674 | |
6f77053d PA |
20675 | int line_delta = (m_line_header->line_base |
20676 | + (adj_opcode % m_line_header->line_range)); | |
20677 | advance_line (line_delta); | |
20678 | record_line (false); | |
20679 | m_discriminator = 0; | |
20680 | } | |
d9b3de22 | 20681 | |
6f77053d PA |
20682 | void |
20683 | lnp_state_machine::handle_set_file (file_name_index file) | |
20684 | { | |
20685 | m_file = file; | |
20686 | ||
20687 | const file_entry *fe = current_file (); | |
20688 | if (fe == NULL) | |
20689 | dwarf2_debug_line_missing_file_complaint (); | |
20690 | else if (m_record_lines_p) | |
20691 | { | |
20692 | const char *dir = fe->include_dir (m_line_header); | |
20693 | ||
804d2729 | 20694 | m_last_subfile = m_cu->builder->get_current_subfile (); |
6f77053d | 20695 | m_line_has_non_zero_discriminator = m_discriminator != 0; |
804d2729 | 20696 | dwarf2_start_subfile (m_cu, fe->name, dir); |
6f77053d PA |
20697 | } |
20698 | } | |
20699 | ||
20700 | void | |
20701 | lnp_state_machine::handle_const_add_pc () | |
20702 | { | |
20703 | CORE_ADDR adjust | |
20704 | = (255 - m_line_header->opcode_base) / m_line_header->line_range; | |
20705 | ||
20706 | CORE_ADDR addr_adj | |
20707 | = (((m_op_index + adjust) | |
20708 | / m_line_header->maximum_ops_per_instruction) | |
20709 | * m_line_header->minimum_instruction_length); | |
20710 | ||
20711 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20712 | m_op_index = ((m_op_index + adjust) | |
20713 | % m_line_header->maximum_ops_per_instruction); | |
20714 | } | |
d9b3de22 | 20715 | |
a05a36a5 DE |
20716 | /* Return non-zero if we should add LINE to the line number table. |
20717 | LINE is the line to add, LAST_LINE is the last line that was added, | |
20718 | LAST_SUBFILE is the subfile for LAST_LINE. | |
20719 | LINE_HAS_NON_ZERO_DISCRIMINATOR is non-zero if LINE has ever | |
20720 | had a non-zero discriminator. | |
20721 | ||
20722 | We have to be careful in the presence of discriminators. | |
20723 | E.g., for this line: | |
20724 | ||
20725 | for (i = 0; i < 100000; i++); | |
20726 | ||
20727 | clang can emit four line number entries for that one line, | |
20728 | each with a different discriminator. | |
20729 | See gdb.dwarf2/dw2-single-line-discriminators.exp for an example. | |
20730 | ||
20731 | However, we want gdb to coalesce all four entries into one. | |
20732 | Otherwise the user could stepi into the middle of the line and | |
20733 | gdb would get confused about whether the pc really was in the | |
20734 | middle of the line. | |
20735 | ||
20736 | Things are further complicated by the fact that two consecutive | |
20737 | line number entries for the same line is a heuristic used by gcc | |
20738 | to denote the end of the prologue. So we can't just discard duplicate | |
20739 | entries, we have to be selective about it. The heuristic we use is | |
20740 | that we only collapse consecutive entries for the same line if at least | |
20741 | one of those entries has a non-zero discriminator. PR 17276. | |
20742 | ||
20743 | Note: Addresses in the line number state machine can never go backwards | |
20744 | within one sequence, thus this coalescing is ok. */ | |
20745 | ||
20746 | static int | |
804d2729 TT |
20747 | dwarf_record_line_p (struct dwarf2_cu *cu, |
20748 | unsigned int line, unsigned int last_line, | |
a05a36a5 DE |
20749 | int line_has_non_zero_discriminator, |
20750 | struct subfile *last_subfile) | |
20751 | { | |
804d2729 | 20752 | if (cu->builder->get_current_subfile () != last_subfile) |
a05a36a5 DE |
20753 | return 1; |
20754 | if (line != last_line) | |
20755 | return 1; | |
20756 | /* Same line for the same file that we've seen already. | |
20757 | As a last check, for pr 17276, only record the line if the line | |
20758 | has never had a non-zero discriminator. */ | |
20759 | if (!line_has_non_zero_discriminator) | |
20760 | return 1; | |
20761 | return 0; | |
20762 | } | |
20763 | ||
804d2729 TT |
20764 | /* Use the CU's builder to record line number LINE beginning at |
20765 | address ADDRESS in the line table of subfile SUBFILE. */ | |
252a6764 DE |
20766 | |
20767 | static void | |
d9b3de22 DE |
20768 | dwarf_record_line_1 (struct gdbarch *gdbarch, struct subfile *subfile, |
20769 | unsigned int line, CORE_ADDR address, | |
804d2729 | 20770 | struct dwarf2_cu *cu) |
252a6764 DE |
20771 | { |
20772 | CORE_ADDR addr = gdbarch_addr_bits_remove (gdbarch, address); | |
20773 | ||
27e0867f DE |
20774 | if (dwarf_line_debug) |
20775 | { | |
20776 | fprintf_unfiltered (gdb_stdlog, | |
20777 | "Recording line %u, file %s, address %s\n", | |
20778 | line, lbasename (subfile->name), | |
20779 | paddress (gdbarch, address)); | |
20780 | } | |
20781 | ||
804d2729 TT |
20782 | if (cu != nullptr) |
20783 | cu->builder->record_line (subfile, line, addr); | |
252a6764 DE |
20784 | } |
20785 | ||
20786 | /* Subroutine of dwarf_decode_lines_1 to simplify it. | |
20787 | Mark the end of a set of line number records. | |
d9b3de22 | 20788 | The arguments are the same as for dwarf_record_line_1. |
252a6764 DE |
20789 | If SUBFILE is NULL the request is ignored. */ |
20790 | ||
20791 | static void | |
20792 | dwarf_finish_line (struct gdbarch *gdbarch, struct subfile *subfile, | |
804d2729 | 20793 | CORE_ADDR address, struct dwarf2_cu *cu) |
252a6764 | 20794 | { |
27e0867f DE |
20795 | if (subfile == NULL) |
20796 | return; | |
20797 | ||
20798 | if (dwarf_line_debug) | |
20799 | { | |
20800 | fprintf_unfiltered (gdb_stdlog, | |
20801 | "Finishing current line, file %s, address %s\n", | |
20802 | lbasename (subfile->name), | |
20803 | paddress (gdbarch, address)); | |
20804 | } | |
20805 | ||
804d2729 | 20806 | dwarf_record_line_1 (gdbarch, subfile, 0, address, cu); |
d9b3de22 DE |
20807 | } |
20808 | ||
6f77053d PA |
20809 | void |
20810 | lnp_state_machine::record_line (bool end_sequence) | |
d9b3de22 | 20811 | { |
d9b3de22 DE |
20812 | if (dwarf_line_debug) |
20813 | { | |
20814 | fprintf_unfiltered (gdb_stdlog, | |
20815 | "Processing actual line %u: file %u," | |
20816 | " address %s, is_stmt %u, discrim %u\n", | |
6f77053d PA |
20817 | m_line, to_underlying (m_file), |
20818 | paddress (m_gdbarch, m_address), | |
20819 | m_is_stmt, m_discriminator); | |
d9b3de22 DE |
20820 | } |
20821 | ||
6f77053d | 20822 | file_entry *fe = current_file (); |
8c43009f PA |
20823 | |
20824 | if (fe == NULL) | |
d9b3de22 DE |
20825 | dwarf2_debug_line_missing_file_complaint (); |
20826 | /* For now we ignore lines not starting on an instruction boundary. | |
20827 | But not when processing end_sequence for compatibility with the | |
20828 | previous version of the code. */ | |
6f77053d | 20829 | else if (m_op_index == 0 || end_sequence) |
d9b3de22 | 20830 | { |
8c43009f | 20831 | fe->included_p = 1; |
c258c396 | 20832 | if (m_record_lines_p && (producer_is_codewarrior (m_cu) || m_is_stmt)) |
d9b3de22 | 20833 | { |
804d2729 TT |
20834 | if (m_last_subfile != m_cu->builder->get_current_subfile () |
20835 | || end_sequence) | |
d9b3de22 | 20836 | { |
804d2729 TT |
20837 | dwarf_finish_line (m_gdbarch, m_last_subfile, m_address, |
20838 | m_currently_recording_lines ? m_cu : nullptr); | |
d9b3de22 DE |
20839 | } |
20840 | ||
20841 | if (!end_sequence) | |
20842 | { | |
804d2729 | 20843 | if (dwarf_record_line_p (m_cu, m_line, m_last_line, |
6f77053d PA |
20844 | m_line_has_non_zero_discriminator, |
20845 | m_last_subfile)) | |
d9b3de22 | 20846 | { |
804d2729 TT |
20847 | dwarf_record_line_1 (m_gdbarch, |
20848 | m_cu->builder->get_current_subfile (), | |
6f77053d | 20849 | m_line, m_address, |
804d2729 | 20850 | m_currently_recording_lines ? m_cu : nullptr); |
d9b3de22 | 20851 | } |
804d2729 | 20852 | m_last_subfile = m_cu->builder->get_current_subfile (); |
6f77053d | 20853 | m_last_line = m_line; |
d9b3de22 DE |
20854 | } |
20855 | } | |
20856 | } | |
20857 | } | |
20858 | ||
804d2729 TT |
20859 | lnp_state_machine::lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, |
20860 | line_header *lh, bool record_lines_p) | |
d9b3de22 | 20861 | { |
804d2729 | 20862 | m_cu = cu; |
6f77053d PA |
20863 | m_gdbarch = arch; |
20864 | m_record_lines_p = record_lines_p; | |
20865 | m_line_header = lh; | |
d9b3de22 | 20866 | |
804d2729 | 20867 | m_currently_recording_lines = true; |
d9b3de22 | 20868 | |
d9b3de22 DE |
20869 | /* Call `gdbarch_adjust_dwarf2_line' on the initial 0 address as if there |
20870 | was a line entry for it so that the backend has a chance to adjust it | |
20871 | and also record it in case it needs it. This is currently used by MIPS | |
20872 | code, cf. `mips_adjust_dwarf2_line'. */ | |
6f77053d PA |
20873 | m_address = gdbarch_adjust_dwarf2_line (arch, 0, 0); |
20874 | m_is_stmt = lh->default_is_stmt; | |
20875 | m_discriminator = 0; | |
252a6764 DE |
20876 | } |
20877 | ||
6f77053d PA |
20878 | void |
20879 | lnp_state_machine::check_line_address (struct dwarf2_cu *cu, | |
20880 | const gdb_byte *line_ptr, | |
7ab6656f | 20881 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address) |
924c2928 | 20882 | { |
7ab6656f OJ |
20883 | /* If ADDRESS < UNRELOCATED_LOWPC then it's not a usable value, it's outside |
20884 | the pc range of the CU. However, we restrict the test to only ADDRESS | |
20885 | values of zero to preserve GDB's previous behaviour which is to handle | |
20886 | the specific case of a function being GC'd by the linker. */ | |
924c2928 | 20887 | |
7ab6656f | 20888 | if (address == 0 && address < unrelocated_lowpc) |
924c2928 DE |
20889 | { |
20890 | /* This line table is for a function which has been | |
20891 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
20892 | ||
518817b3 | 20893 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
924c2928 DE |
20894 | long line_offset = line_ptr - get_debug_line_section (cu)->buffer; |
20895 | ||
b98664d3 | 20896 | complaint (_(".debug_line address at offset 0x%lx is 0 [in module %s]"), |
924c2928 | 20897 | line_offset, objfile_name (objfile)); |
804d2729 TT |
20898 | m_currently_recording_lines = false; |
20899 | /* Note: m_currently_recording_lines is left as false until we see | |
20900 | DW_LNE_end_sequence. */ | |
924c2928 DE |
20901 | } |
20902 | } | |
20903 | ||
f3f5162e | 20904 | /* Subroutine of dwarf_decode_lines to simplify it. |
d9b3de22 DE |
20905 | Process the line number information in LH. |
20906 | If DECODE_FOR_PST_P is non-zero, all we do is process the line number | |
20907 | program in order to set included_p for every referenced header. */ | |
debd256d | 20908 | |
c906108c | 20909 | static void |
43f3e411 DE |
20910 | dwarf_decode_lines_1 (struct line_header *lh, struct dwarf2_cu *cu, |
20911 | const int decode_for_pst_p, CORE_ADDR lowpc) | |
c906108c | 20912 | { |
d521ce57 TT |
20913 | const gdb_byte *line_ptr, *extended_end; |
20914 | const gdb_byte *line_end; | |
a8c50c1f | 20915 | unsigned int bytes_read, extended_len; |
699ca60a | 20916 | unsigned char op_code, extended_op; |
e142c38c | 20917 | CORE_ADDR baseaddr; |
518817b3 | 20918 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
f3f5162e | 20919 | bfd *abfd = objfile->obfd; |
fbf65064 | 20920 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
6f77053d PA |
20921 | /* True if we're recording line info (as opposed to building partial |
20922 | symtabs and just interested in finding include files mentioned by | |
20923 | the line number program). */ | |
20924 | bool record_lines_p = !decode_for_pst_p; | |
e142c38c DJ |
20925 | |
20926 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 20927 | |
debd256d JB |
20928 | line_ptr = lh->statement_program_start; |
20929 | line_end = lh->statement_program_end; | |
c906108c SS |
20930 | |
20931 | /* Read the statement sequences until there's nothing left. */ | |
20932 | while (line_ptr < line_end) | |
20933 | { | |
6f77053d PA |
20934 | /* The DWARF line number program state machine. Reset the state |
20935 | machine at the start of each sequence. */ | |
804d2729 | 20936 | lnp_state_machine state_machine (cu, gdbarch, lh, record_lines_p); |
6f77053d | 20937 | bool end_sequence = false; |
d9b3de22 | 20938 | |
8c43009f | 20939 | if (record_lines_p) |
c906108c | 20940 | { |
8c43009f PA |
20941 | /* Start a subfile for the current file of the state |
20942 | machine. */ | |
20943 | const file_entry *fe = state_machine.current_file (); | |
20944 | ||
20945 | if (fe != NULL) | |
804d2729 | 20946 | dwarf2_start_subfile (cu, fe->name, fe->include_dir (lh)); |
c906108c SS |
20947 | } |
20948 | ||
a738430d | 20949 | /* Decode the table. */ |
d9b3de22 | 20950 | while (line_ptr < line_end && !end_sequence) |
c906108c SS |
20951 | { |
20952 | op_code = read_1_byte (abfd, line_ptr); | |
20953 | line_ptr += 1; | |
9aa1fe7e | 20954 | |
debd256d | 20955 | if (op_code >= lh->opcode_base) |
6e70227d | 20956 | { |
8e07a239 | 20957 | /* Special opcode. */ |
6f77053d | 20958 | state_machine.handle_special_opcode (op_code); |
9aa1fe7e GK |
20959 | } |
20960 | else switch (op_code) | |
c906108c SS |
20961 | { |
20962 | case DW_LNS_extended_op: | |
3e43a32a MS |
20963 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
20964 | &bytes_read); | |
473b7be6 | 20965 | line_ptr += bytes_read; |
a8c50c1f | 20966 | extended_end = line_ptr + extended_len; |
c906108c SS |
20967 | extended_op = read_1_byte (abfd, line_ptr); |
20968 | line_ptr += 1; | |
20969 | switch (extended_op) | |
20970 | { | |
20971 | case DW_LNE_end_sequence: | |
6f77053d PA |
20972 | state_machine.handle_end_sequence (); |
20973 | end_sequence = true; | |
c906108c SS |
20974 | break; |
20975 | case DW_LNE_set_address: | |
d9b3de22 DE |
20976 | { |
20977 | CORE_ADDR address | |
20978 | = read_address (abfd, line_ptr, cu, &bytes_read); | |
d9b3de22 | 20979 | line_ptr += bytes_read; |
6f77053d PA |
20980 | |
20981 | state_machine.check_line_address (cu, line_ptr, | |
7ab6656f | 20982 | lowpc - baseaddr, address); |
6f77053d | 20983 | state_machine.handle_set_address (baseaddr, address); |
d9b3de22 | 20984 | } |
c906108c SS |
20985 | break; |
20986 | case DW_LNE_define_file: | |
debd256d | 20987 | { |
d521ce57 | 20988 | const char *cur_file; |
ecfb656c PA |
20989 | unsigned int mod_time, length; |
20990 | dir_index dindex; | |
6e70227d | 20991 | |
3e43a32a MS |
20992 | cur_file = read_direct_string (abfd, line_ptr, |
20993 | &bytes_read); | |
debd256d | 20994 | line_ptr += bytes_read; |
ecfb656c | 20995 | dindex = (dir_index) |
debd256d JB |
20996 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
20997 | line_ptr += bytes_read; | |
20998 | mod_time = | |
20999 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21000 | line_ptr += bytes_read; | |
21001 | length = | |
21002 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21003 | line_ptr += bytes_read; | |
ecfb656c | 21004 | lh->add_file_name (cur_file, dindex, mod_time, length); |
debd256d | 21005 | } |
c906108c | 21006 | break; |
d0c6ba3d | 21007 | case DW_LNE_set_discriminator: |
6f77053d PA |
21008 | { |
21009 | /* The discriminator is not interesting to the | |
21010 | debugger; just ignore it. We still need to | |
21011 | check its value though: | |
21012 | if there are consecutive entries for the same | |
21013 | (non-prologue) line we want to coalesce them. | |
21014 | PR 17276. */ | |
21015 | unsigned int discr | |
21016 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21017 | line_ptr += bytes_read; | |
21018 | ||
21019 | state_machine.handle_set_discriminator (discr); | |
21020 | } | |
d0c6ba3d | 21021 | break; |
c906108c | 21022 | default: |
b98664d3 | 21023 | complaint (_("mangled .debug_line section")); |
debd256d | 21024 | return; |
c906108c | 21025 | } |
a8c50c1f DJ |
21026 | /* Make sure that we parsed the extended op correctly. If e.g. |
21027 | we expected a different address size than the producer used, | |
21028 | we may have read the wrong number of bytes. */ | |
21029 | if (line_ptr != extended_end) | |
21030 | { | |
b98664d3 | 21031 | complaint (_("mangled .debug_line section")); |
a8c50c1f DJ |
21032 | return; |
21033 | } | |
c906108c SS |
21034 | break; |
21035 | case DW_LNS_copy: | |
6f77053d | 21036 | state_machine.handle_copy (); |
c906108c SS |
21037 | break; |
21038 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
21039 | { |
21040 | CORE_ADDR adjust | |
21041 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
2dc7f7b3 | 21042 | line_ptr += bytes_read; |
6f77053d PA |
21043 | |
21044 | state_machine.handle_advance_pc (adjust); | |
2dc7f7b3 | 21045 | } |
c906108c SS |
21046 | break; |
21047 | case DW_LNS_advance_line: | |
a05a36a5 DE |
21048 | { |
21049 | int line_delta | |
21050 | = read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
a05a36a5 | 21051 | line_ptr += bytes_read; |
6f77053d PA |
21052 | |
21053 | state_machine.handle_advance_line (line_delta); | |
a05a36a5 | 21054 | } |
c906108c SS |
21055 | break; |
21056 | case DW_LNS_set_file: | |
d9b3de22 | 21057 | { |
6f77053d | 21058 | file_name_index file |
ecfb656c PA |
21059 | = (file_name_index) read_unsigned_leb128 (abfd, line_ptr, |
21060 | &bytes_read); | |
d9b3de22 | 21061 | line_ptr += bytes_read; |
8c43009f | 21062 | |
6f77053d | 21063 | state_machine.handle_set_file (file); |
d9b3de22 | 21064 | } |
c906108c SS |
21065 | break; |
21066 | case DW_LNS_set_column: | |
0ad93d4f | 21067 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
c906108c SS |
21068 | line_ptr += bytes_read; |
21069 | break; | |
21070 | case DW_LNS_negate_stmt: | |
6f77053d | 21071 | state_machine.handle_negate_stmt (); |
c906108c SS |
21072 | break; |
21073 | case DW_LNS_set_basic_block: | |
c906108c | 21074 | break; |
c2c6d25f JM |
21075 | /* Add to the address register of the state machine the |
21076 | address increment value corresponding to special opcode | |
a738430d MK |
21077 | 255. I.e., this value is scaled by the minimum |
21078 | instruction length since special opcode 255 would have | |
b021a221 | 21079 | scaled the increment. */ |
c906108c | 21080 | case DW_LNS_const_add_pc: |
6f77053d | 21081 | state_machine.handle_const_add_pc (); |
c906108c SS |
21082 | break; |
21083 | case DW_LNS_fixed_advance_pc: | |
3e29f34a | 21084 | { |
6f77053d | 21085 | CORE_ADDR addr_adj = read_2_bytes (abfd, line_ptr); |
3e29f34a | 21086 | line_ptr += 2; |
6f77053d PA |
21087 | |
21088 | state_machine.handle_fixed_advance_pc (addr_adj); | |
3e29f34a | 21089 | } |
c906108c | 21090 | break; |
9aa1fe7e | 21091 | default: |
a738430d MK |
21092 | { |
21093 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 21094 | int i; |
a738430d | 21095 | |
debd256d | 21096 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
21097 | { |
21098 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21099 | line_ptr += bytes_read; | |
21100 | } | |
21101 | } | |
c906108c SS |
21102 | } |
21103 | } | |
d9b3de22 DE |
21104 | |
21105 | if (!end_sequence) | |
21106 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
21107 | ||
21108 | /* We got a DW_LNE_end_sequence (or we ran off the end of the buffer, | |
21109 | in which case we still finish recording the last line). */ | |
6f77053d | 21110 | state_machine.record_line (true); |
c906108c | 21111 | } |
f3f5162e DE |
21112 | } |
21113 | ||
21114 | /* Decode the Line Number Program (LNP) for the given line_header | |
21115 | structure and CU. The actual information extracted and the type | |
21116 | of structures created from the LNP depends on the value of PST. | |
21117 | ||
21118 | 1. If PST is NULL, then this procedure uses the data from the program | |
21119 | to create all necessary symbol tables, and their linetables. | |
21120 | ||
21121 | 2. If PST is not NULL, this procedure reads the program to determine | |
21122 | the list of files included by the unit represented by PST, and | |
21123 | builds all the associated partial symbol tables. | |
21124 | ||
21125 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
21126 | It is used for relative paths in the line table. | |
21127 | NOTE: When processing partial symtabs (pst != NULL), | |
21128 | comp_dir == pst->dirname. | |
21129 | ||
21130 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
21131 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
21132 | symtab we don't use it in the name of the psymtabs we create. | |
21133 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
c3b7b696 YQ |
21134 | A good testcase for this is mb-inline.exp. |
21135 | ||
527f3840 JK |
21136 | LOWPC is the lowest address in CU (or 0 if not known). |
21137 | ||
21138 | Boolean DECODE_MAPPING specifies we need to fully decode .debug_line | |
21139 | for its PC<->lines mapping information. Otherwise only the filename | |
21140 | table is read in. */ | |
f3f5162e DE |
21141 | |
21142 | static void | |
21143 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
c3b7b696 | 21144 | struct dwarf2_cu *cu, struct partial_symtab *pst, |
527f3840 | 21145 | CORE_ADDR lowpc, int decode_mapping) |
f3f5162e | 21146 | { |
518817b3 | 21147 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
f3f5162e | 21148 | const int decode_for_pst_p = (pst != NULL); |
f3f5162e | 21149 | |
527f3840 JK |
21150 | if (decode_mapping) |
21151 | dwarf_decode_lines_1 (lh, cu, decode_for_pst_p, lowpc); | |
aaa75496 JB |
21152 | |
21153 | if (decode_for_pst_p) | |
21154 | { | |
21155 | int file_index; | |
21156 | ||
21157 | /* Now that we're done scanning the Line Header Program, we can | |
21158 | create the psymtab of each included file. */ | |
fff8551c | 21159 | for (file_index = 0; file_index < lh->file_names.size (); file_index++) |
aaa75496 JB |
21160 | if (lh->file_names[file_index].included_p == 1) |
21161 | { | |
c89b44cd | 21162 | gdb::unique_xmalloc_ptr<char> name_holder; |
d521ce57 | 21163 | const char *include_name = |
c89b44cd TT |
21164 | psymtab_include_file_name (lh, file_index, pst, comp_dir, |
21165 | &name_holder); | |
c6da4cef | 21166 | if (include_name != NULL) |
aaa75496 JB |
21167 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
21168 | } | |
21169 | } | |
cb1df416 DJ |
21170 | else |
21171 | { | |
21172 | /* Make sure a symtab is created for every file, even files | |
21173 | which contain only variables (i.e. no code with associated | |
21174 | line numbers). */ | |
804d2729 | 21175 | struct compunit_symtab *cust = cu->builder->get_compunit_symtab (); |
cb1df416 | 21176 | int i; |
cb1df416 | 21177 | |
fff8551c | 21178 | for (i = 0; i < lh->file_names.size (); i++) |
cb1df416 | 21179 | { |
8c43009f | 21180 | file_entry &fe = lh->file_names[i]; |
9a619af0 | 21181 | |
804d2729 | 21182 | dwarf2_start_subfile (cu, fe.name, fe.include_dir (lh)); |
cb1df416 | 21183 | |
804d2729 | 21184 | if (cu->builder->get_current_subfile ()->symtab == NULL) |
43f3e411 | 21185 | { |
804d2729 TT |
21186 | cu->builder->get_current_subfile ()->symtab |
21187 | = allocate_symtab (cust, | |
21188 | cu->builder->get_current_subfile ()->name); | |
43f3e411 | 21189 | } |
804d2729 | 21190 | fe.symtab = cu->builder->get_current_subfile ()->symtab; |
cb1df416 DJ |
21191 | } |
21192 | } | |
c906108c SS |
21193 | } |
21194 | ||
21195 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
21196 | DIRNAME the name of the source directory which contains FILENAME | |
4d663531 | 21197 | or NULL if not known. |
c906108c SS |
21198 | This routine tries to keep line numbers from identical absolute and |
21199 | relative file names in a common subfile. | |
21200 | ||
21201 | Using the `list' example from the GDB testsuite, which resides in | |
21202 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
21203 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
21204 | ||
c5aa993b | 21205 | DW_AT_name: /srcdir/list0.c |
4d663531 | 21206 | DW_AT_comp_dir: /compdir |
357e46e7 | 21207 | files.files[0].name: list0.h |
c5aa993b | 21208 | files.files[0].dir: /srcdir |
357e46e7 | 21209 | files.files[1].name: list0.c |
c5aa993b | 21210 | files.files[1].dir: /srcdir |
c906108c SS |
21211 | |
21212 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
21213 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
21214 | start_subfile will ensure that this happens provided that we pass the | |
21215 | concatenation of files.files[1].dir and files.files[1].name as the | |
21216 | subfile's name. */ | |
c906108c SS |
21217 | |
21218 | static void | |
804d2729 TT |
21219 | dwarf2_start_subfile (struct dwarf2_cu *cu, const char *filename, |
21220 | const char *dirname) | |
c906108c | 21221 | { |
d521ce57 | 21222 | char *copy = NULL; |
4f1520fb | 21223 | |
4d663531 | 21224 | /* In order not to lose the line information directory, |
4f1520fb FR |
21225 | we concatenate it to the filename when it makes sense. |
21226 | Note that the Dwarf3 standard says (speaking of filenames in line | |
21227 | information): ``The directory index is ignored for file names | |
21228 | that represent full path names''. Thus ignoring dirname in the | |
21229 | `else' branch below isn't an issue. */ | |
c906108c | 21230 | |
d5166ae1 | 21231 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
d521ce57 TT |
21232 | { |
21233 | copy = concat (dirname, SLASH_STRING, filename, (char *)NULL); | |
21234 | filename = copy; | |
21235 | } | |
c906108c | 21236 | |
804d2729 | 21237 | cu->builder->start_subfile (filename); |
4f1520fb | 21238 | |
d521ce57 TT |
21239 | if (copy != NULL) |
21240 | xfree (copy); | |
c906108c SS |
21241 | } |
21242 | ||
804d2729 TT |
21243 | /* Start a symtab for DWARF. NAME, COMP_DIR, LOW_PC are passed to the |
21244 | buildsym_compunit constructor. */ | |
f4dc4d17 | 21245 | |
43f3e411 | 21246 | static struct compunit_symtab * |
f4dc4d17 | 21247 | dwarf2_start_symtab (struct dwarf2_cu *cu, |
15d034d0 | 21248 | const char *name, const char *comp_dir, CORE_ADDR low_pc) |
f4dc4d17 | 21249 | { |
804d2729 | 21250 | gdb_assert (cu->builder == nullptr); |
43f3e411 | 21251 | |
804d2729 TT |
21252 | cu->builder.reset (new struct buildsym_compunit |
21253 | (cu->per_cu->dwarf2_per_objfile->objfile, | |
21254 | name, comp_dir, cu->language, low_pc)); | |
93b8bea4 | 21255 | |
804d2729 TT |
21256 | cu->list_in_scope = cu->builder->get_file_symbols (); |
21257 | ||
21258 | cu->builder->record_debugformat ("DWARF 2"); | |
21259 | cu->builder->record_producer (cu->producer); | |
f4dc4d17 | 21260 | |
9068261f | 21261 | cu->processing_has_namespace_info = false; |
43f3e411 | 21262 | |
804d2729 | 21263 | return cu->builder->get_compunit_symtab (); |
f4dc4d17 DE |
21264 | } |
21265 | ||
4c2df51b DJ |
21266 | static void |
21267 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 21268 | struct dwarf2_cu *cu) |
4c2df51b | 21269 | { |
518817b3 | 21270 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e7c27a73 DJ |
21271 | struct comp_unit_head *cu_header = &cu->header; |
21272 | ||
4c2df51b DJ |
21273 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
21274 | code here to turn a symbol with DW_AT_external and a | |
21275 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
21276 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
21277 | with some versions of binutils) where shared libraries could have | |
21278 | relocations against symbols in their debug information - the | |
21279 | minimal symbol would have the right address, but the debug info | |
21280 | would not. It's no longer necessary, because we will explicitly | |
21281 | apply relocations when we read in the debug information now. */ | |
21282 | ||
21283 | /* A DW_AT_location attribute with no contents indicates that a | |
21284 | variable has been optimized away. */ | |
21285 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
21286 | { | |
f1e6e072 | 21287 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
4c2df51b DJ |
21288 | return; |
21289 | } | |
21290 | ||
21291 | /* Handle one degenerate form of location expression specially, to | |
21292 | preserve GDB's previous behavior when section offsets are | |
3019eac3 DE |
21293 | specified. If this is just a DW_OP_addr or DW_OP_GNU_addr_index |
21294 | then mark this symbol as LOC_STATIC. */ | |
4c2df51b DJ |
21295 | |
21296 | if (attr_form_is_block (attr) | |
3019eac3 DE |
21297 | && ((DW_BLOCK (attr)->data[0] == DW_OP_addr |
21298 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size) | |
21299 | || (DW_BLOCK (attr)->data[0] == DW_OP_GNU_addr_index | |
21300 | && (DW_BLOCK (attr)->size | |
21301 | == 1 + leb128_size (&DW_BLOCK (attr)->data[1]))))) | |
4c2df51b | 21302 | { |
891d2f0b | 21303 | unsigned int dummy; |
4c2df51b | 21304 | |
3019eac3 DE |
21305 | if (DW_BLOCK (attr)->data[0] == DW_OP_addr) |
21306 | SYMBOL_VALUE_ADDRESS (sym) = | |
21307 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); | |
21308 | else | |
21309 | SYMBOL_VALUE_ADDRESS (sym) = | |
21310 | read_addr_index_from_leb128 (cu, DW_BLOCK (attr)->data + 1, &dummy); | |
f1e6e072 | 21311 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
4c2df51b DJ |
21312 | fixup_symbol_section (sym, objfile); |
21313 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
21314 | SYMBOL_SECTION (sym)); | |
4c2df51b DJ |
21315 | return; |
21316 | } | |
21317 | ||
21318 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
21319 | expression evaluator, and use LOC_COMPUTED only when necessary | |
21320 | (i.e. when the value of a register or memory location is | |
21321 | referenced, or a thread-local block, etc.). Then again, it might | |
21322 | not be worthwhile. I'm assuming that it isn't unless performance | |
21323 | or memory numbers show me otherwise. */ | |
21324 | ||
f1e6e072 | 21325 | dwarf2_symbol_mark_computed (attr, sym, cu, 0); |
8be455d7 | 21326 | |
f1e6e072 | 21327 | if (SYMBOL_COMPUTED_OPS (sym)->location_has_loclist) |
9068261f | 21328 | cu->has_loclist = true; |
4c2df51b DJ |
21329 | } |
21330 | ||
c906108c SS |
21331 | /* Given a pointer to a DWARF information entry, figure out if we need |
21332 | to make a symbol table entry for it, and if so, create a new entry | |
21333 | and return a pointer to it. | |
21334 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
21335 | used the passed type. |
21336 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
21337 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
21338 | |
21339 | static struct symbol * | |
5e2db402 TT |
21340 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
21341 | struct symbol *space) | |
c906108c | 21342 | { |
518817b3 SM |
21343 | struct dwarf2_per_objfile *dwarf2_per_objfile |
21344 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 21345 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 21346 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 21347 | struct symbol *sym = NULL; |
15d034d0 | 21348 | const char *name; |
c906108c SS |
21349 | struct attribute *attr = NULL; |
21350 | struct attribute *attr2 = NULL; | |
e142c38c | 21351 | CORE_ADDR baseaddr; |
e37fd15a SW |
21352 | struct pending **list_to_add = NULL; |
21353 | ||
edb3359d | 21354 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c DJ |
21355 | |
21356 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 21357 | |
94af9270 | 21358 | name = dwarf2_name (die, cu); |
c906108c SS |
21359 | if (name) |
21360 | { | |
94af9270 | 21361 | const char *linkagename; |
34eaf542 | 21362 | int suppress_add = 0; |
94af9270 | 21363 | |
34eaf542 TT |
21364 | if (space) |
21365 | sym = space; | |
21366 | else | |
e623cf5d | 21367 | sym = allocate_symbol (objfile); |
c906108c | 21368 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
21369 | |
21370 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
f85f34ed | 21371 | SYMBOL_SET_LANGUAGE (sym, cu->language, &objfile->objfile_obstack); |
94af9270 KS |
21372 | linkagename = dwarf2_physname (name, die, cu); |
21373 | SYMBOL_SET_NAMES (sym, linkagename, strlen (linkagename), 0, objfile); | |
c906108c | 21374 | |
f55ee35c JK |
21375 | /* Fortran does not have mangling standard and the mangling does differ |
21376 | between gfortran, iFort etc. */ | |
21377 | if (cu->language == language_fortran | |
b250c185 | 21378 | && symbol_get_demangled_name (&(sym->ginfo)) == NULL) |
29df156d | 21379 | symbol_set_demangled_name (&(sym->ginfo), |
cfc594ee | 21380 | dwarf2_full_name (name, die, cu), |
29df156d | 21381 | NULL); |
f55ee35c | 21382 | |
c906108c | 21383 | /* Default assumptions. |
c5aa993b | 21384 | Use the passed type or decode it from the die. */ |
176620f1 | 21385 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 21386 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
21387 | if (type != NULL) |
21388 | SYMBOL_TYPE (sym) = type; | |
21389 | else | |
e7c27a73 | 21390 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
21391 | attr = dwarf2_attr (die, |
21392 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
21393 | cu); | |
c906108c SS |
21394 | if (attr) |
21395 | { | |
21396 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
21397 | } | |
cb1df416 | 21398 | |
edb3359d DJ |
21399 | attr = dwarf2_attr (die, |
21400 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
21401 | cu); | |
cb1df416 DJ |
21402 | if (attr) |
21403 | { | |
ecfb656c | 21404 | file_name_index file_index = (file_name_index) DW_UNSND (attr); |
8c43009f | 21405 | struct file_entry *fe; |
9a619af0 | 21406 | |
ecfb656c PA |
21407 | if (cu->line_header != NULL) |
21408 | fe = cu->line_header->file_name_at (file_index); | |
8c43009f PA |
21409 | else |
21410 | fe = NULL; | |
21411 | ||
21412 | if (fe == NULL) | |
b98664d3 | 21413 | complaint (_("file index out of range")); |
8c43009f PA |
21414 | else |
21415 | symbol_set_symtab (sym, fe->symtab); | |
cb1df416 DJ |
21416 | } |
21417 | ||
c906108c SS |
21418 | switch (die->tag) |
21419 | { | |
21420 | case DW_TAG_label: | |
e142c38c | 21421 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c | 21422 | if (attr) |
3e29f34a MR |
21423 | { |
21424 | CORE_ADDR addr; | |
21425 | ||
21426 | addr = attr_value_as_address (attr); | |
21427 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr + baseaddr); | |
21428 | SYMBOL_VALUE_ADDRESS (sym) = addr; | |
21429 | } | |
0f5238ed TT |
21430 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
21431 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
f1e6e072 | 21432 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
380618d6 | 21433 | dw2_add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
21434 | break; |
21435 | case DW_TAG_subprogram: | |
21436 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
21437 | finish_block. */ | |
f1e6e072 | 21438 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
e142c38c | 21439 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d JB |
21440 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
21441 | || cu->language == language_ada) | |
c906108c | 21442 | { |
2cfa0c8d JB |
21443 | /* Subprograms marked external are stored as a global symbol. |
21444 | Ada subprograms, whether marked external or not, are always | |
21445 | stored as a global symbol, because we want to be able to | |
21446 | access them globally. For instance, we want to be able | |
21447 | to break on a nested subprogram without having to | |
21448 | specify the context. */ | |
804d2729 | 21449 | list_to_add = cu->builder->get_global_symbols (); |
c906108c SS |
21450 | } |
21451 | else | |
21452 | { | |
e37fd15a | 21453 | list_to_add = cu->list_in_scope; |
c906108c SS |
21454 | } |
21455 | break; | |
edb3359d DJ |
21456 | case DW_TAG_inlined_subroutine: |
21457 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
21458 | finish_block. */ | |
f1e6e072 | 21459 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
edb3359d | 21460 | SYMBOL_INLINED (sym) = 1; |
481860b3 | 21461 | list_to_add = cu->list_in_scope; |
edb3359d | 21462 | break; |
34eaf542 TT |
21463 | case DW_TAG_template_value_param: |
21464 | suppress_add = 1; | |
21465 | /* Fall through. */ | |
72929c62 | 21466 | case DW_TAG_constant: |
c906108c | 21467 | case DW_TAG_variable: |
254e6b9e | 21468 | case DW_TAG_member: |
0963b4bd MS |
21469 | /* Compilation with minimal debug info may result in |
21470 | variables with missing type entries. Change the | |
21471 | misleading `void' type to something sensible. */ | |
c906108c | 21472 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) |
46a4882b | 21473 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_int; |
64c50499 | 21474 | |
e142c38c | 21475 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
21476 | /* In the case of DW_TAG_member, we should only be called for |
21477 | static const members. */ | |
21478 | if (die->tag == DW_TAG_member) | |
21479 | { | |
3863f96c DE |
21480 | /* dwarf2_add_field uses die_is_declaration, |
21481 | so we do the same. */ | |
254e6b9e DE |
21482 | gdb_assert (die_is_declaration (die, cu)); |
21483 | gdb_assert (attr); | |
21484 | } | |
c906108c SS |
21485 | if (attr) |
21486 | { | |
e7c27a73 | 21487 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 21488 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 21489 | if (!suppress_add) |
34eaf542 TT |
21490 | { |
21491 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
804d2729 | 21492 | list_to_add = cu->builder->get_global_symbols (); |
34eaf542 | 21493 | else |
e37fd15a | 21494 | list_to_add = cu->list_in_scope; |
34eaf542 | 21495 | } |
c906108c SS |
21496 | break; |
21497 | } | |
e142c38c | 21498 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
21499 | if (attr) |
21500 | { | |
e7c27a73 | 21501 | var_decode_location (attr, sym, cu); |
e142c38c | 21502 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
21503 | |
21504 | /* Fortran explicitly imports any global symbols to the local | |
21505 | scope by DW_TAG_common_block. */ | |
21506 | if (cu->language == language_fortran && die->parent | |
21507 | && die->parent->tag == DW_TAG_common_block) | |
21508 | attr2 = NULL; | |
21509 | ||
caac4577 JG |
21510 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
21511 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
21512 | && !dwarf2_per_objfile->has_section_at_zero) | |
21513 | { | |
21514 | /* When a static variable is eliminated by the linker, | |
21515 | the corresponding debug information is not stripped | |
21516 | out, but the variable address is set to null; | |
21517 | do not add such variables into symbol table. */ | |
21518 | } | |
21519 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 21520 | { |
f55ee35c JK |
21521 | /* Workaround gfortran PR debug/40040 - it uses |
21522 | DW_AT_location for variables in -fPIC libraries which may | |
21523 | get overriden by other libraries/executable and get | |
21524 | a different address. Resolve it by the minimal symbol | |
21525 | which may come from inferior's executable using copy | |
21526 | relocation. Make this workaround only for gfortran as for | |
21527 | other compilers GDB cannot guess the minimal symbol | |
21528 | Fortran mangling kind. */ | |
21529 | if (cu->language == language_fortran && die->parent | |
21530 | && die->parent->tag == DW_TAG_module | |
21531 | && cu->producer | |
28586665 | 21532 | && startswith (cu->producer, "GNU Fortran")) |
f1e6e072 | 21533 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
f55ee35c | 21534 | |
1c809c68 TT |
21535 | /* A variable with DW_AT_external is never static, |
21536 | but it may be block-scoped. */ | |
804d2729 TT |
21537 | list_to_add |
21538 | = (cu->list_in_scope == cu->builder->get_file_symbols () | |
21539 | ? cu->builder->get_global_symbols () | |
21540 | : cu->list_in_scope); | |
1c809c68 | 21541 | } |
c906108c | 21542 | else |
e37fd15a | 21543 | list_to_add = cu->list_in_scope; |
c906108c SS |
21544 | } |
21545 | else | |
21546 | { | |
21547 | /* We do not know the address of this symbol. | |
c5aa993b JM |
21548 | If it is an external symbol and we have type information |
21549 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
21550 | The address of the variable will then be determined from | |
21551 | the minimal symbol table whenever the variable is | |
21552 | referenced. */ | |
e142c38c | 21553 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
21554 | |
21555 | /* Fortran explicitly imports any global symbols to the local | |
21556 | scope by DW_TAG_common_block. */ | |
21557 | if (cu->language == language_fortran && die->parent | |
21558 | && die->parent->tag == DW_TAG_common_block) | |
21559 | { | |
21560 | /* SYMBOL_CLASS doesn't matter here because | |
21561 | read_common_block is going to reset it. */ | |
21562 | if (!suppress_add) | |
21563 | list_to_add = cu->list_in_scope; | |
21564 | } | |
21565 | else if (attr2 && (DW_UNSND (attr2) != 0) | |
21566 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) | |
c906108c | 21567 | { |
0fe7935b DJ |
21568 | /* A variable with DW_AT_external is never static, but it |
21569 | may be block-scoped. */ | |
804d2729 TT |
21570 | list_to_add |
21571 | = (cu->list_in_scope == cu->builder->get_file_symbols () | |
21572 | ? cu->builder->get_global_symbols () | |
21573 | : cu->list_in_scope); | |
0fe7935b | 21574 | |
f1e6e072 | 21575 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
c906108c | 21576 | } |
442ddf59 JK |
21577 | else if (!die_is_declaration (die, cu)) |
21578 | { | |
21579 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
21580 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
21581 | if (!suppress_add) |
21582 | list_to_add = cu->list_in_scope; | |
442ddf59 | 21583 | } |
c906108c SS |
21584 | } |
21585 | break; | |
21586 | case DW_TAG_formal_parameter: | |
a60f3166 TT |
21587 | { |
21588 | /* If we are inside a function, mark this as an argument. If | |
21589 | not, we might be looking at an argument to an inlined function | |
21590 | when we do not have enough information to show inlined frames; | |
21591 | pretend it's a local variable in that case so that the user can | |
21592 | still see it. */ | |
804d2729 TT |
21593 | struct context_stack *curr |
21594 | = cu->builder->get_current_context_stack (); | |
a60f3166 TT |
21595 | if (curr != nullptr && curr->name != nullptr) |
21596 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
21597 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
21598 | if (attr) | |
21599 | { | |
21600 | var_decode_location (attr, sym, cu); | |
21601 | } | |
21602 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
21603 | if (attr) | |
21604 | { | |
21605 | dwarf2_const_value (attr, sym, cu); | |
21606 | } | |
f346a30d | 21607 | |
a60f3166 TT |
21608 | list_to_add = cu->list_in_scope; |
21609 | } | |
c906108c SS |
21610 | break; |
21611 | case DW_TAG_unspecified_parameters: | |
21612 | /* From varargs functions; gdb doesn't seem to have any | |
21613 | interest in this information, so just ignore it for now. | |
21614 | (FIXME?) */ | |
21615 | break; | |
34eaf542 TT |
21616 | case DW_TAG_template_type_param: |
21617 | suppress_add = 1; | |
21618 | /* Fall through. */ | |
c906108c | 21619 | case DW_TAG_class_type: |
680b30c7 | 21620 | case DW_TAG_interface_type: |
c906108c SS |
21621 | case DW_TAG_structure_type: |
21622 | case DW_TAG_union_type: | |
72019c9c | 21623 | case DW_TAG_set_type: |
c906108c | 21624 | case DW_TAG_enumeration_type: |
f1e6e072 | 21625 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 21626 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 21627 | |
63d06c5c | 21628 | { |
9c37b5ae | 21629 | /* NOTE: carlton/2003-11-10: C++ class symbols shouldn't |
63d06c5c DC |
21630 | really ever be static objects: otherwise, if you try |
21631 | to, say, break of a class's method and you're in a file | |
21632 | which doesn't mention that class, it won't work unless | |
21633 | the check for all static symbols in lookup_symbol_aux | |
21634 | saves you. See the OtherFileClass tests in | |
21635 | gdb.c++/namespace.exp. */ | |
21636 | ||
e37fd15a | 21637 | if (!suppress_add) |
34eaf542 | 21638 | { |
804d2729 TT |
21639 | list_to_add |
21640 | = (cu->list_in_scope == cu->builder->get_file_symbols () | |
21641 | && cu->language == language_cplus | |
21642 | ? cu->builder->get_global_symbols () | |
21643 | : cu->list_in_scope); | |
63d06c5c | 21644 | |
64382290 | 21645 | /* The semantics of C++ state that "struct foo { |
9c37b5ae | 21646 | ... }" also defines a typedef for "foo". */ |
64382290 | 21647 | if (cu->language == language_cplus |
45280282 | 21648 | || cu->language == language_ada |
c44af4eb TT |
21649 | || cu->language == language_d |
21650 | || cu->language == language_rust) | |
64382290 TT |
21651 | { |
21652 | /* The symbol's name is already allocated along | |
21653 | with this objfile, so we don't need to | |
21654 | duplicate it for the type. */ | |
21655 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
21656 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_SEARCH_NAME (sym); | |
21657 | } | |
63d06c5c DC |
21658 | } |
21659 | } | |
c906108c SS |
21660 | break; |
21661 | case DW_TAG_typedef: | |
f1e6e072 | 21662 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
63d06c5c | 21663 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 21664 | list_to_add = cu->list_in_scope; |
63d06c5c | 21665 | break; |
c906108c | 21666 | case DW_TAG_base_type: |
a02abb62 | 21667 | case DW_TAG_subrange_type: |
f1e6e072 | 21668 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 21669 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 21670 | list_to_add = cu->list_in_scope; |
c906108c SS |
21671 | break; |
21672 | case DW_TAG_enumerator: | |
e142c38c | 21673 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
21674 | if (attr) |
21675 | { | |
e7c27a73 | 21676 | dwarf2_const_value (attr, sym, cu); |
c906108c | 21677 | } |
63d06c5c DC |
21678 | { |
21679 | /* NOTE: carlton/2003-11-10: See comment above in the | |
21680 | DW_TAG_class_type, etc. block. */ | |
21681 | ||
804d2729 TT |
21682 | list_to_add |
21683 | = (cu->list_in_scope == cu->builder->get_file_symbols () | |
21684 | && cu->language == language_cplus | |
21685 | ? cu->builder->get_global_symbols () | |
21686 | : cu->list_in_scope); | |
63d06c5c | 21687 | } |
c906108c | 21688 | break; |
74921315 | 21689 | case DW_TAG_imported_declaration: |
5c4e30ca | 21690 | case DW_TAG_namespace: |
f1e6e072 | 21691 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
804d2729 | 21692 | list_to_add = cu->builder->get_global_symbols (); |
5c4e30ca | 21693 | break; |
530e8392 KB |
21694 | case DW_TAG_module: |
21695 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; | |
21696 | SYMBOL_DOMAIN (sym) = MODULE_DOMAIN; | |
804d2729 | 21697 | list_to_add = cu->builder->get_global_symbols (); |
530e8392 | 21698 | break; |
4357ac6c | 21699 | case DW_TAG_common_block: |
f1e6e072 | 21700 | SYMBOL_ACLASS_INDEX (sym) = LOC_COMMON_BLOCK; |
4357ac6c | 21701 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; |
380618d6 | 21702 | dw2_add_symbol_to_list (sym, cu->list_in_scope); |
4357ac6c | 21703 | break; |
c906108c SS |
21704 | default: |
21705 | /* Not a tag we recognize. Hopefully we aren't processing | |
21706 | trash data, but since we must specifically ignore things | |
21707 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 21708 | this point. */ |
b98664d3 | 21709 | complaint (_("unsupported tag: '%s'"), |
4d3c2250 | 21710 | dwarf_tag_name (die->tag)); |
c906108c SS |
21711 | break; |
21712 | } | |
df8a16a1 | 21713 | |
e37fd15a SW |
21714 | if (suppress_add) |
21715 | { | |
21716 | sym->hash_next = objfile->template_symbols; | |
21717 | objfile->template_symbols = sym; | |
21718 | list_to_add = NULL; | |
21719 | } | |
21720 | ||
21721 | if (list_to_add != NULL) | |
380618d6 | 21722 | dw2_add_symbol_to_list (sym, list_to_add); |
e37fd15a | 21723 | |
df8a16a1 DJ |
21724 | /* For the benefit of old versions of GCC, check for anonymous |
21725 | namespaces based on the demangled name. */ | |
4d4ec4e5 | 21726 | if (!cu->processing_has_namespace_info |
94af9270 | 21727 | && cu->language == language_cplus) |
804d2729 | 21728 | cp_scan_for_anonymous_namespaces (cu->builder.get (), sym, objfile); |
c906108c SS |
21729 | } |
21730 | return (sym); | |
21731 | } | |
21732 | ||
98bfdba5 PA |
21733 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
21734 | zero-extend it as appropriate for the symbol's type. The DWARF | |
21735 | standard (v4) is not entirely clear about the meaning of using | |
21736 | DW_FORM_dataN for a constant with a signed type, where the type is | |
21737 | wider than the data. The conclusion of a discussion on the DWARF | |
21738 | list was that this is unspecified. We choose to always zero-extend | |
21739 | because that is the interpretation long in use by GCC. */ | |
c906108c | 21740 | |
98bfdba5 | 21741 | static gdb_byte * |
ff39bb5e | 21742 | dwarf2_const_value_data (const struct attribute *attr, struct obstack *obstack, |
12df843f | 21743 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 21744 | { |
518817b3 | 21745 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e17a4113 UW |
21746 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
21747 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
21748 | LONGEST l = DW_UNSND (attr); |
21749 | ||
21750 | if (bits < sizeof (*value) * 8) | |
21751 | { | |
21752 | l &= ((LONGEST) 1 << bits) - 1; | |
21753 | *value = l; | |
21754 | } | |
21755 | else if (bits == sizeof (*value) * 8) | |
21756 | *value = l; | |
21757 | else | |
21758 | { | |
224c3ddb | 21759 | gdb_byte *bytes = (gdb_byte *) obstack_alloc (obstack, bits / 8); |
98bfdba5 PA |
21760 | store_unsigned_integer (bytes, bits / 8, byte_order, l); |
21761 | return bytes; | |
21762 | } | |
21763 | ||
21764 | return NULL; | |
21765 | } | |
21766 | ||
21767 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
21768 | the value does not fit in *VALUE, set *BYTES - either already | |
21769 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
21770 | or, set *BATON, if we translated the constant to a location | |
21771 | expression. */ | |
21772 | ||
21773 | static void | |
ff39bb5e | 21774 | dwarf2_const_value_attr (const struct attribute *attr, struct type *type, |
98bfdba5 PA |
21775 | const char *name, struct obstack *obstack, |
21776 | struct dwarf2_cu *cu, | |
d521ce57 | 21777 | LONGEST *value, const gdb_byte **bytes, |
98bfdba5 PA |
21778 | struct dwarf2_locexpr_baton **baton) |
21779 | { | |
518817b3 | 21780 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
98bfdba5 | 21781 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 21782 | struct dwarf_block *blk; |
98bfdba5 PA |
21783 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
21784 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
21785 | ||
21786 | *value = 0; | |
21787 | *bytes = NULL; | |
21788 | *baton = NULL; | |
c906108c SS |
21789 | |
21790 | switch (attr->form) | |
21791 | { | |
21792 | case DW_FORM_addr: | |
3019eac3 | 21793 | case DW_FORM_GNU_addr_index: |
ac56253d | 21794 | { |
ac56253d TT |
21795 | gdb_byte *data; |
21796 | ||
98bfdba5 PA |
21797 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
21798 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 21799 | cu_header->addr_size, |
98bfdba5 | 21800 | TYPE_LENGTH (type)); |
ac56253d TT |
21801 | /* Symbols of this form are reasonably rare, so we just |
21802 | piggyback on the existing location code rather than writing | |
21803 | a new implementation of symbol_computed_ops. */ | |
8d749320 | 21804 | *baton = XOBNEW (obstack, struct dwarf2_locexpr_baton); |
98bfdba5 PA |
21805 | (*baton)->per_cu = cu->per_cu; |
21806 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 21807 | |
98bfdba5 | 21808 | (*baton)->size = 2 + cu_header->addr_size; |
224c3ddb | 21809 | data = (gdb_byte *) obstack_alloc (obstack, (*baton)->size); |
98bfdba5 | 21810 | (*baton)->data = data; |
ac56253d TT |
21811 | |
21812 | data[0] = DW_OP_addr; | |
21813 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
21814 | byte_order, DW_ADDR (attr)); | |
21815 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 21816 | } |
c906108c | 21817 | break; |
4ac36638 | 21818 | case DW_FORM_string: |
93b5768b | 21819 | case DW_FORM_strp: |
3019eac3 | 21820 | case DW_FORM_GNU_str_index: |
36586728 | 21821 | case DW_FORM_GNU_strp_alt: |
98bfdba5 PA |
21822 | /* DW_STRING is already allocated on the objfile obstack, point |
21823 | directly to it. */ | |
d521ce57 | 21824 | *bytes = (const gdb_byte *) DW_STRING (attr); |
93b5768b | 21825 | break; |
c906108c SS |
21826 | case DW_FORM_block1: |
21827 | case DW_FORM_block2: | |
21828 | case DW_FORM_block4: | |
21829 | case DW_FORM_block: | |
2dc7f7b3 | 21830 | case DW_FORM_exprloc: |
0224619f | 21831 | case DW_FORM_data16: |
c906108c | 21832 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
21833 | if (TYPE_LENGTH (type) != blk->size) |
21834 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
21835 | TYPE_LENGTH (type)); | |
21836 | *bytes = blk->data; | |
c906108c | 21837 | break; |
2df3850c JM |
21838 | |
21839 | /* The DW_AT_const_value attributes are supposed to carry the | |
21840 | symbol's value "represented as it would be on the target | |
21841 | architecture." By the time we get here, it's already been | |
21842 | converted to host endianness, so we just need to sign- or | |
21843 | zero-extend it as appropriate. */ | |
21844 | case DW_FORM_data1: | |
3aef2284 | 21845 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 8); |
2df3850c | 21846 | break; |
c906108c | 21847 | case DW_FORM_data2: |
3aef2284 | 21848 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 16); |
2df3850c | 21849 | break; |
c906108c | 21850 | case DW_FORM_data4: |
3aef2284 | 21851 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 32); |
2df3850c | 21852 | break; |
c906108c | 21853 | case DW_FORM_data8: |
3aef2284 | 21854 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 64); |
2df3850c JM |
21855 | break; |
21856 | ||
c906108c | 21857 | case DW_FORM_sdata: |
663c44ac | 21858 | case DW_FORM_implicit_const: |
98bfdba5 | 21859 | *value = DW_SND (attr); |
2df3850c JM |
21860 | break; |
21861 | ||
c906108c | 21862 | case DW_FORM_udata: |
98bfdba5 | 21863 | *value = DW_UNSND (attr); |
c906108c | 21864 | break; |
2df3850c | 21865 | |
c906108c | 21866 | default: |
b98664d3 | 21867 | complaint (_("unsupported const value attribute form: '%s'"), |
4d3c2250 | 21868 | dwarf_form_name (attr->form)); |
98bfdba5 | 21869 | *value = 0; |
c906108c SS |
21870 | break; |
21871 | } | |
21872 | } | |
21873 | ||
2df3850c | 21874 | |
98bfdba5 PA |
21875 | /* Copy constant value from an attribute to a symbol. */ |
21876 | ||
2df3850c | 21877 | static void |
ff39bb5e | 21878 | dwarf2_const_value (const struct attribute *attr, struct symbol *sym, |
98bfdba5 | 21879 | struct dwarf2_cu *cu) |
2df3850c | 21880 | { |
518817b3 | 21881 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
12df843f | 21882 | LONGEST value; |
d521ce57 | 21883 | const gdb_byte *bytes; |
98bfdba5 | 21884 | struct dwarf2_locexpr_baton *baton; |
2df3850c | 21885 | |
98bfdba5 PA |
21886 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
21887 | SYMBOL_PRINT_NAME (sym), | |
21888 | &objfile->objfile_obstack, cu, | |
21889 | &value, &bytes, &baton); | |
2df3850c | 21890 | |
98bfdba5 PA |
21891 | if (baton != NULL) |
21892 | { | |
98bfdba5 | 21893 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 21894 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
98bfdba5 PA |
21895 | } |
21896 | else if (bytes != NULL) | |
21897 | { | |
21898 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
f1e6e072 | 21899 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
98bfdba5 PA |
21900 | } |
21901 | else | |
21902 | { | |
21903 | SYMBOL_VALUE (sym) = value; | |
f1e6e072 | 21904 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
98bfdba5 | 21905 | } |
2df3850c JM |
21906 | } |
21907 | ||
c906108c SS |
21908 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
21909 | ||
21910 | static struct type * | |
e7c27a73 | 21911 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21912 | { |
c906108c | 21913 | struct attribute *type_attr; |
c906108c | 21914 | |
e142c38c | 21915 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
21916 | if (!type_attr) |
21917 | { | |
518817b3 | 21918 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 21919 | /* A missing DW_AT_type represents a void type. */ |
518817b3 | 21920 | return objfile_type (objfile)->builtin_void; |
c906108c | 21921 | } |
348e048f | 21922 | |
673bfd45 | 21923 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
21924 | } |
21925 | ||
b4ba55a1 JB |
21926 | /* True iff CU's producer generates GNAT Ada auxiliary information |
21927 | that allows to find parallel types through that information instead | |
21928 | of having to do expensive parallel lookups by type name. */ | |
21929 | ||
21930 | static int | |
21931 | need_gnat_info (struct dwarf2_cu *cu) | |
21932 | { | |
de4cb04a JB |
21933 | /* Assume that the Ada compiler was GNAT, which always produces |
21934 | the auxiliary information. */ | |
21935 | return (cu->language == language_ada); | |
b4ba55a1 JB |
21936 | } |
21937 | ||
b4ba55a1 JB |
21938 | /* Return the auxiliary type of the die in question using its |
21939 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
21940 | attribute is not present. */ | |
21941 | ||
21942 | static struct type * | |
21943 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
21944 | { | |
b4ba55a1 | 21945 | struct attribute *type_attr; |
b4ba55a1 JB |
21946 | |
21947 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
21948 | if (!type_attr) | |
21949 | return NULL; | |
21950 | ||
673bfd45 | 21951 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
21952 | } |
21953 | ||
21954 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
21955 | descriptive type accordingly. */ | |
21956 | ||
21957 | static void | |
21958 | set_descriptive_type (struct type *type, struct die_info *die, | |
21959 | struct dwarf2_cu *cu) | |
21960 | { | |
21961 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
21962 | ||
21963 | if (descriptive_type) | |
21964 | { | |
21965 | ALLOCATE_GNAT_AUX_TYPE (type); | |
21966 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
21967 | } | |
21968 | } | |
21969 | ||
c906108c SS |
21970 | /* Return the containing type of the die in question using its |
21971 | DW_AT_containing_type attribute. */ | |
21972 | ||
21973 | static struct type * | |
e7c27a73 | 21974 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21975 | { |
c906108c | 21976 | struct attribute *type_attr; |
518817b3 | 21977 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 21978 | |
e142c38c | 21979 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
21980 | if (!type_attr) |
21981 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
518817b3 | 21982 | "[in module %s]"), objfile_name (objfile)); |
33ac96f0 | 21983 | |
673bfd45 | 21984 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
21985 | } |
21986 | ||
ac9ec31b DE |
21987 | /* Return an error marker type to use for the ill formed type in DIE/CU. */ |
21988 | ||
21989 | static struct type * | |
21990 | build_error_marker_type (struct dwarf2_cu *cu, struct die_info *die) | |
21991 | { | |
518817b3 SM |
21992 | struct dwarf2_per_objfile *dwarf2_per_objfile |
21993 | = cu->per_cu->dwarf2_per_objfile; | |
ac9ec31b | 21994 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
528e1572 | 21995 | char *saved; |
ac9ec31b | 21996 | |
528e1572 SM |
21997 | std::string message |
21998 | = string_printf (_("<unknown type in %s, CU %s, DIE %s>"), | |
21999 | objfile_name (objfile), | |
22000 | sect_offset_str (cu->header.sect_off), | |
22001 | sect_offset_str (die->sect_off)); | |
224c3ddb | 22002 | saved = (char *) obstack_copy0 (&objfile->objfile_obstack, |
528e1572 | 22003 | message.c_str (), message.length ()); |
ac9ec31b | 22004 | |
19f392bc | 22005 | return init_type (objfile, TYPE_CODE_ERROR, 0, saved); |
ac9ec31b DE |
22006 | } |
22007 | ||
673bfd45 | 22008 | /* Look up the type of DIE in CU using its type attribute ATTR. |
ac9ec31b DE |
22009 | ATTR must be one of: DW_AT_type, DW_AT_GNAT_descriptive_type, |
22010 | DW_AT_containing_type. | |
673bfd45 DE |
22011 | If there is no type substitute an error marker. */ |
22012 | ||
c906108c | 22013 | static struct type * |
ff39bb5e | 22014 | lookup_die_type (struct die_info *die, const struct attribute *attr, |
673bfd45 | 22015 | struct dwarf2_cu *cu) |
c906108c | 22016 | { |
518817b3 SM |
22017 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22018 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 22019 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
f792889a DJ |
22020 | struct type *this_type; |
22021 | ||
ac9ec31b DE |
22022 | gdb_assert (attr->name == DW_AT_type |
22023 | || attr->name == DW_AT_GNAT_descriptive_type | |
22024 | || attr->name == DW_AT_containing_type); | |
22025 | ||
673bfd45 DE |
22026 | /* First see if we have it cached. */ |
22027 | ||
36586728 TT |
22028 | if (attr->form == DW_FORM_GNU_ref_alt) |
22029 | { | |
22030 | struct dwarf2_per_cu_data *per_cu; | |
9c541725 | 22031 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
36586728 | 22032 | |
ed2dc618 SM |
22033 | per_cu = dwarf2_find_containing_comp_unit (sect_off, 1, |
22034 | dwarf2_per_objfile); | |
9c541725 | 22035 | this_type = get_die_type_at_offset (sect_off, per_cu); |
36586728 | 22036 | } |
7771576e | 22037 | else if (attr_form_is_ref (attr)) |
673bfd45 | 22038 | { |
9c541725 | 22039 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
673bfd45 | 22040 | |
9c541725 | 22041 | this_type = get_die_type_at_offset (sect_off, cu->per_cu); |
673bfd45 | 22042 | } |
55f1336d | 22043 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 | 22044 | { |
ac9ec31b | 22045 | ULONGEST signature = DW_SIGNATURE (attr); |
673bfd45 | 22046 | |
ac9ec31b | 22047 | return get_signatured_type (die, signature, cu); |
673bfd45 DE |
22048 | } |
22049 | else | |
22050 | { | |
b98664d3 | 22051 | complaint (_("Dwarf Error: Bad type attribute %s in DIE" |
9d8780f0 SM |
22052 | " at %s [in module %s]"), |
22053 | dwarf_attr_name (attr->name), sect_offset_str (die->sect_off), | |
4262abfb | 22054 | objfile_name (objfile)); |
ac9ec31b | 22055 | return build_error_marker_type (cu, die); |
673bfd45 DE |
22056 | } |
22057 | ||
22058 | /* If not cached we need to read it in. */ | |
22059 | ||
22060 | if (this_type == NULL) | |
22061 | { | |
ac9ec31b | 22062 | struct die_info *type_die = NULL; |
673bfd45 DE |
22063 | struct dwarf2_cu *type_cu = cu; |
22064 | ||
7771576e | 22065 | if (attr_form_is_ref (attr)) |
ac9ec31b DE |
22066 | type_die = follow_die_ref (die, attr, &type_cu); |
22067 | if (type_die == NULL) | |
22068 | return build_error_marker_type (cu, die); | |
22069 | /* If we find the type now, it's probably because the type came | |
3019eac3 DE |
22070 | from an inter-CU reference and the type's CU got expanded before |
22071 | ours. */ | |
ac9ec31b | 22072 | this_type = read_type_die (type_die, type_cu); |
673bfd45 DE |
22073 | } |
22074 | ||
22075 | /* If we still don't have a type use an error marker. */ | |
22076 | ||
22077 | if (this_type == NULL) | |
ac9ec31b | 22078 | return build_error_marker_type (cu, die); |
673bfd45 | 22079 | |
f792889a | 22080 | return this_type; |
c906108c SS |
22081 | } |
22082 | ||
673bfd45 DE |
22083 | /* Return the type in DIE, CU. |
22084 | Returns NULL for invalid types. | |
22085 | ||
02142a6c | 22086 | This first does a lookup in die_type_hash, |
673bfd45 DE |
22087 | and only reads the die in if necessary. |
22088 | ||
22089 | NOTE: This can be called when reading in partial or full symbols. */ | |
22090 | ||
f792889a | 22091 | static struct type * |
e7c27a73 | 22092 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22093 | { |
f792889a DJ |
22094 | struct type *this_type; |
22095 | ||
22096 | this_type = get_die_type (die, cu); | |
22097 | if (this_type) | |
22098 | return this_type; | |
22099 | ||
673bfd45 DE |
22100 | return read_type_die_1 (die, cu); |
22101 | } | |
22102 | ||
22103 | /* Read the type in DIE, CU. | |
22104 | Returns NULL for invalid types. */ | |
22105 | ||
22106 | static struct type * | |
22107 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
22108 | { | |
22109 | struct type *this_type = NULL; | |
22110 | ||
c906108c SS |
22111 | switch (die->tag) |
22112 | { | |
22113 | case DW_TAG_class_type: | |
680b30c7 | 22114 | case DW_TAG_interface_type: |
c906108c SS |
22115 | case DW_TAG_structure_type: |
22116 | case DW_TAG_union_type: | |
f792889a | 22117 | this_type = read_structure_type (die, cu); |
c906108c SS |
22118 | break; |
22119 | case DW_TAG_enumeration_type: | |
f792889a | 22120 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
22121 | break; |
22122 | case DW_TAG_subprogram: | |
22123 | case DW_TAG_subroutine_type: | |
edb3359d | 22124 | case DW_TAG_inlined_subroutine: |
f792889a | 22125 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
22126 | break; |
22127 | case DW_TAG_array_type: | |
f792889a | 22128 | this_type = read_array_type (die, cu); |
c906108c | 22129 | break; |
72019c9c | 22130 | case DW_TAG_set_type: |
f792889a | 22131 | this_type = read_set_type (die, cu); |
72019c9c | 22132 | break; |
c906108c | 22133 | case DW_TAG_pointer_type: |
f792889a | 22134 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
22135 | break; |
22136 | case DW_TAG_ptr_to_member_type: | |
f792889a | 22137 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
22138 | break; |
22139 | case DW_TAG_reference_type: | |
4297a3f0 AV |
22140 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_REF); |
22141 | break; | |
22142 | case DW_TAG_rvalue_reference_type: | |
22143 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_RVALUE_REF); | |
c906108c SS |
22144 | break; |
22145 | case DW_TAG_const_type: | |
f792889a | 22146 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
22147 | break; |
22148 | case DW_TAG_volatile_type: | |
f792889a | 22149 | this_type = read_tag_volatile_type (die, cu); |
c906108c | 22150 | break; |
06d66ee9 TT |
22151 | case DW_TAG_restrict_type: |
22152 | this_type = read_tag_restrict_type (die, cu); | |
22153 | break; | |
c906108c | 22154 | case DW_TAG_string_type: |
f792889a | 22155 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
22156 | break; |
22157 | case DW_TAG_typedef: | |
f792889a | 22158 | this_type = read_typedef (die, cu); |
c906108c | 22159 | break; |
a02abb62 | 22160 | case DW_TAG_subrange_type: |
f792889a | 22161 | this_type = read_subrange_type (die, cu); |
a02abb62 | 22162 | break; |
c906108c | 22163 | case DW_TAG_base_type: |
f792889a | 22164 | this_type = read_base_type (die, cu); |
c906108c | 22165 | break; |
81a17f79 | 22166 | case DW_TAG_unspecified_type: |
f792889a | 22167 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 22168 | break; |
0114d602 DJ |
22169 | case DW_TAG_namespace: |
22170 | this_type = read_namespace_type (die, cu); | |
22171 | break; | |
f55ee35c JK |
22172 | case DW_TAG_module: |
22173 | this_type = read_module_type (die, cu); | |
22174 | break; | |
a2c2acaf MW |
22175 | case DW_TAG_atomic_type: |
22176 | this_type = read_tag_atomic_type (die, cu); | |
22177 | break; | |
c906108c | 22178 | default: |
b98664d3 | 22179 | complaint (_("unexpected tag in read_type_die: '%s'"), |
4d3c2250 | 22180 | dwarf_tag_name (die->tag)); |
c906108c SS |
22181 | break; |
22182 | } | |
63d06c5c | 22183 | |
f792889a | 22184 | return this_type; |
63d06c5c DC |
22185 | } |
22186 | ||
abc72ce4 DE |
22187 | /* See if we can figure out if the class lives in a namespace. We do |
22188 | this by looking for a member function; its demangled name will | |
22189 | contain namespace info, if there is any. | |
22190 | Return the computed name or NULL. | |
22191 | Space for the result is allocated on the objfile's obstack. | |
22192 | This is the full-die version of guess_partial_die_structure_name. | |
22193 | In this case we know DIE has no useful parent. */ | |
22194 | ||
22195 | static char * | |
22196 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) | |
22197 | { | |
22198 | struct die_info *spec_die; | |
22199 | struct dwarf2_cu *spec_cu; | |
22200 | struct die_info *child; | |
518817b3 | 22201 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
abc72ce4 DE |
22202 | |
22203 | spec_cu = cu; | |
22204 | spec_die = die_specification (die, &spec_cu); | |
22205 | if (spec_die != NULL) | |
22206 | { | |
22207 | die = spec_die; | |
22208 | cu = spec_cu; | |
22209 | } | |
22210 | ||
22211 | for (child = die->child; | |
22212 | child != NULL; | |
22213 | child = child->sibling) | |
22214 | { | |
22215 | if (child->tag == DW_TAG_subprogram) | |
22216 | { | |
73b9be8b | 22217 | const char *linkage_name = dw2_linkage_name (child, cu); |
abc72ce4 | 22218 | |
7d45c7c3 | 22219 | if (linkage_name != NULL) |
abc72ce4 DE |
22220 | { |
22221 | char *actual_name | |
22222 | = language_class_name_from_physname (cu->language_defn, | |
7d45c7c3 | 22223 | linkage_name); |
abc72ce4 DE |
22224 | char *name = NULL; |
22225 | ||
22226 | if (actual_name != NULL) | |
22227 | { | |
15d034d0 | 22228 | const char *die_name = dwarf2_name (die, cu); |
abc72ce4 DE |
22229 | |
22230 | if (die_name != NULL | |
22231 | && strcmp (die_name, actual_name) != 0) | |
22232 | { | |
22233 | /* Strip off the class name from the full name. | |
22234 | We want the prefix. */ | |
22235 | int die_name_len = strlen (die_name); | |
22236 | int actual_name_len = strlen (actual_name); | |
22237 | ||
22238 | /* Test for '::' as a sanity check. */ | |
22239 | if (actual_name_len > die_name_len + 2 | |
3e43a32a MS |
22240 | && actual_name[actual_name_len |
22241 | - die_name_len - 1] == ':') | |
224c3ddb | 22242 | name = (char *) obstack_copy0 ( |
e3b94546 | 22243 | &objfile->per_bfd->storage_obstack, |
224c3ddb | 22244 | actual_name, actual_name_len - die_name_len - 2); |
abc72ce4 DE |
22245 | } |
22246 | } | |
22247 | xfree (actual_name); | |
22248 | return name; | |
22249 | } | |
22250 | } | |
22251 | } | |
22252 | ||
22253 | return NULL; | |
22254 | } | |
22255 | ||
96408a79 SA |
22256 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
22257 | prefix part in such case. See | |
22258 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
22259 | ||
a121b7c1 | 22260 | static const char * |
96408a79 SA |
22261 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) |
22262 | { | |
22263 | struct attribute *attr; | |
e6a959d6 | 22264 | const char *base; |
96408a79 SA |
22265 | |
22266 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
22267 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
22268 | return NULL; | |
22269 | ||
7d45c7c3 | 22270 | if (dwarf2_string_attr (die, DW_AT_name, cu) != NULL) |
96408a79 SA |
22271 | return NULL; |
22272 | ||
73b9be8b | 22273 | attr = dw2_linkage_name_attr (die, cu); |
96408a79 SA |
22274 | if (attr == NULL || DW_STRING (attr) == NULL) |
22275 | return NULL; | |
22276 | ||
22277 | /* dwarf2_name had to be already called. */ | |
22278 | gdb_assert (DW_STRING_IS_CANONICAL (attr)); | |
22279 | ||
22280 | /* Strip the base name, keep any leading namespaces/classes. */ | |
22281 | base = strrchr (DW_STRING (attr), ':'); | |
22282 | if (base == NULL || base == DW_STRING (attr) || base[-1] != ':') | |
22283 | return ""; | |
22284 | ||
518817b3 | 22285 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e3b94546 | 22286 | return (char *) obstack_copy0 (&objfile->per_bfd->storage_obstack, |
224c3ddb SM |
22287 | DW_STRING (attr), |
22288 | &base[-1] - DW_STRING (attr)); | |
96408a79 SA |
22289 | } |
22290 | ||
fdde2d81 | 22291 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 22292 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 22293 | |
0114d602 DJ |
22294 | For example, if we're within the method foo() in the following |
22295 | code: | |
22296 | ||
22297 | namespace N { | |
22298 | class C { | |
22299 | void foo () { | |
22300 | } | |
22301 | }; | |
22302 | } | |
22303 | ||
22304 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 22305 | |
0d5cff50 | 22306 | static const char * |
e142c38c | 22307 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 22308 | { |
518817b3 SM |
22309 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22310 | = cu->per_cu->dwarf2_per_objfile; | |
0114d602 DJ |
22311 | struct die_info *parent, *spec_die; |
22312 | struct dwarf2_cu *spec_cu; | |
22313 | struct type *parent_type; | |
a121b7c1 | 22314 | const char *retval; |
63d06c5c | 22315 | |
9c37b5ae | 22316 | if (cu->language != language_cplus |
c44af4eb TT |
22317 | && cu->language != language_fortran && cu->language != language_d |
22318 | && cu->language != language_rust) | |
0114d602 DJ |
22319 | return ""; |
22320 | ||
96408a79 SA |
22321 | retval = anonymous_struct_prefix (die, cu); |
22322 | if (retval) | |
22323 | return retval; | |
22324 | ||
0114d602 DJ |
22325 | /* We have to be careful in the presence of DW_AT_specification. |
22326 | For example, with GCC 3.4, given the code | |
22327 | ||
22328 | namespace N { | |
22329 | void foo() { | |
22330 | // Definition of N::foo. | |
22331 | } | |
22332 | } | |
22333 | ||
22334 | then we'll have a tree of DIEs like this: | |
22335 | ||
22336 | 1: DW_TAG_compile_unit | |
22337 | 2: DW_TAG_namespace // N | |
22338 | 3: DW_TAG_subprogram // declaration of N::foo | |
22339 | 4: DW_TAG_subprogram // definition of N::foo | |
22340 | DW_AT_specification // refers to die #3 | |
22341 | ||
22342 | Thus, when processing die #4, we have to pretend that we're in | |
22343 | the context of its DW_AT_specification, namely the contex of die | |
22344 | #3. */ | |
22345 | spec_cu = cu; | |
22346 | spec_die = die_specification (die, &spec_cu); | |
22347 | if (spec_die == NULL) | |
22348 | parent = die->parent; | |
22349 | else | |
63d06c5c | 22350 | { |
0114d602 DJ |
22351 | parent = spec_die->parent; |
22352 | cu = spec_cu; | |
63d06c5c | 22353 | } |
0114d602 DJ |
22354 | |
22355 | if (parent == NULL) | |
22356 | return ""; | |
98bfdba5 PA |
22357 | else if (parent->building_fullname) |
22358 | { | |
22359 | const char *name; | |
22360 | const char *parent_name; | |
22361 | ||
22362 | /* It has been seen on RealView 2.2 built binaries, | |
22363 | DW_TAG_template_type_param types actually _defined_ as | |
22364 | children of the parent class: | |
22365 | ||
22366 | enum E {}; | |
22367 | template class <class Enum> Class{}; | |
22368 | Class<enum E> class_e; | |
22369 | ||
22370 | 1: DW_TAG_class_type (Class) | |
22371 | 2: DW_TAG_enumeration_type (E) | |
22372 | 3: DW_TAG_enumerator (enum1:0) | |
22373 | 3: DW_TAG_enumerator (enum2:1) | |
22374 | ... | |
22375 | 2: DW_TAG_template_type_param | |
22376 | DW_AT_type DW_FORM_ref_udata (E) | |
22377 | ||
22378 | Besides being broken debug info, it can put GDB into an | |
22379 | infinite loop. Consider: | |
22380 | ||
22381 | When we're building the full name for Class<E>, we'll start | |
22382 | at Class, and go look over its template type parameters, | |
22383 | finding E. We'll then try to build the full name of E, and | |
22384 | reach here. We're now trying to build the full name of E, | |
22385 | and look over the parent DIE for containing scope. In the | |
22386 | broken case, if we followed the parent DIE of E, we'd again | |
22387 | find Class, and once again go look at its template type | |
22388 | arguments, etc., etc. Simply don't consider such parent die | |
22389 | as source-level parent of this die (it can't be, the language | |
22390 | doesn't allow it), and break the loop here. */ | |
22391 | name = dwarf2_name (die, cu); | |
22392 | parent_name = dwarf2_name (parent, cu); | |
b98664d3 | 22393 | complaint (_("template param type '%s' defined within parent '%s'"), |
98bfdba5 PA |
22394 | name ? name : "<unknown>", |
22395 | parent_name ? parent_name : "<unknown>"); | |
22396 | return ""; | |
22397 | } | |
63d06c5c | 22398 | else |
0114d602 DJ |
22399 | switch (parent->tag) |
22400 | { | |
63d06c5c | 22401 | case DW_TAG_namespace: |
0114d602 | 22402 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
22403 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
22404 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
22405 | Work around this problem here. */ | |
22406 | if (cu->language == language_cplus | |
e86ca25f | 22407 | && strcmp (TYPE_NAME (parent_type), "::") == 0) |
acebe513 | 22408 | return ""; |
0114d602 | 22409 | /* We give a name to even anonymous namespaces. */ |
e86ca25f | 22410 | return TYPE_NAME (parent_type); |
63d06c5c | 22411 | case DW_TAG_class_type: |
680b30c7 | 22412 | case DW_TAG_interface_type: |
63d06c5c | 22413 | case DW_TAG_structure_type: |
0114d602 | 22414 | case DW_TAG_union_type: |
f55ee35c | 22415 | case DW_TAG_module: |
0114d602 | 22416 | parent_type = read_type_die (parent, cu); |
e86ca25f TT |
22417 | if (TYPE_NAME (parent_type) != NULL) |
22418 | return TYPE_NAME (parent_type); | |
0114d602 DJ |
22419 | else |
22420 | /* An anonymous structure is only allowed non-static data | |
22421 | members; no typedefs, no member functions, et cetera. | |
22422 | So it does not need a prefix. */ | |
22423 | return ""; | |
abc72ce4 | 22424 | case DW_TAG_compile_unit: |
95554aad | 22425 | case DW_TAG_partial_unit: |
abc72ce4 DE |
22426 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
22427 | if (cu->language == language_cplus | |
8b70b953 | 22428 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
22429 | && die->child != NULL |
22430 | && (die->tag == DW_TAG_class_type | |
22431 | || die->tag == DW_TAG_structure_type | |
22432 | || die->tag == DW_TAG_union_type)) | |
22433 | { | |
22434 | char *name = guess_full_die_structure_name (die, cu); | |
22435 | if (name != NULL) | |
22436 | return name; | |
22437 | } | |
22438 | return ""; | |
3d567982 TT |
22439 | case DW_TAG_enumeration_type: |
22440 | parent_type = read_type_die (parent, cu); | |
22441 | if (TYPE_DECLARED_CLASS (parent_type)) | |
22442 | { | |
e86ca25f TT |
22443 | if (TYPE_NAME (parent_type) != NULL) |
22444 | return TYPE_NAME (parent_type); | |
3d567982 TT |
22445 | return ""; |
22446 | } | |
22447 | /* Fall through. */ | |
63d06c5c | 22448 | default: |
8176b9b8 | 22449 | return determine_prefix (parent, cu); |
63d06c5c | 22450 | } |
63d06c5c DC |
22451 | } |
22452 | ||
3e43a32a MS |
22453 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
22454 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
22455 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
22456 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
22457 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 22458 | |
f55ee35c | 22459 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
22460 | |
22461 | static char * | |
f55ee35c JK |
22462 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
22463 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 22464 | { |
f55ee35c | 22465 | const char *lead = ""; |
5c315b68 | 22466 | const char *sep; |
63d06c5c | 22467 | |
3e43a32a MS |
22468 | if (suffix == NULL || suffix[0] == '\0' |
22469 | || prefix == NULL || prefix[0] == '\0') | |
987504bb | 22470 | sep = ""; |
45280282 IB |
22471 | else if (cu->language == language_d) |
22472 | { | |
22473 | /* For D, the 'main' function could be defined in any module, but it | |
22474 | should never be prefixed. */ | |
22475 | if (strcmp (suffix, "D main") == 0) | |
22476 | { | |
22477 | prefix = ""; | |
22478 | sep = ""; | |
22479 | } | |
22480 | else | |
22481 | sep = "."; | |
22482 | } | |
f55ee35c JK |
22483 | else if (cu->language == language_fortran && physname) |
22484 | { | |
22485 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
22486 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
22487 | ||
22488 | lead = "__"; | |
22489 | sep = "_MOD_"; | |
22490 | } | |
987504bb JJ |
22491 | else |
22492 | sep = "::"; | |
63d06c5c | 22493 | |
6dd47d34 DE |
22494 | if (prefix == NULL) |
22495 | prefix = ""; | |
22496 | if (suffix == NULL) | |
22497 | suffix = ""; | |
22498 | ||
987504bb JJ |
22499 | if (obs == NULL) |
22500 | { | |
3e43a32a | 22501 | char *retval |
224c3ddb SM |
22502 | = ((char *) |
22503 | xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1)); | |
9a619af0 | 22504 | |
f55ee35c JK |
22505 | strcpy (retval, lead); |
22506 | strcat (retval, prefix); | |
6dd47d34 DE |
22507 | strcat (retval, sep); |
22508 | strcat (retval, suffix); | |
63d06c5c DC |
22509 | return retval; |
22510 | } | |
987504bb JJ |
22511 | else |
22512 | { | |
22513 | /* We have an obstack. */ | |
f55ee35c | 22514 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 22515 | } |
63d06c5c DC |
22516 | } |
22517 | ||
c906108c SS |
22518 | /* Return sibling of die, NULL if no sibling. */ |
22519 | ||
f9aca02d | 22520 | static struct die_info * |
fba45db2 | 22521 | sibling_die (struct die_info *die) |
c906108c | 22522 | { |
639d11d3 | 22523 | return die->sibling; |
c906108c SS |
22524 | } |
22525 | ||
71c25dea TT |
22526 | /* Get name of a die, return NULL if not found. */ |
22527 | ||
15d034d0 TT |
22528 | static const char * |
22529 | dwarf2_canonicalize_name (const char *name, struct dwarf2_cu *cu, | |
71c25dea TT |
22530 | struct obstack *obstack) |
22531 | { | |
22532 | if (name && cu->language == language_cplus) | |
22533 | { | |
2f408ecb | 22534 | std::string canon_name = cp_canonicalize_string (name); |
71c25dea | 22535 | |
2f408ecb | 22536 | if (!canon_name.empty ()) |
71c25dea | 22537 | { |
2f408ecb PA |
22538 | if (canon_name != name) |
22539 | name = (const char *) obstack_copy0 (obstack, | |
22540 | canon_name.c_str (), | |
22541 | canon_name.length ()); | |
71c25dea TT |
22542 | } |
22543 | } | |
22544 | ||
22545 | return name; | |
c906108c SS |
22546 | } |
22547 | ||
96553a0c DE |
22548 | /* Get name of a die, return NULL if not found. |
22549 | Anonymous namespaces are converted to their magic string. */ | |
9219021c | 22550 | |
15d034d0 | 22551 | static const char * |
e142c38c | 22552 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
22553 | { |
22554 | struct attribute *attr; | |
518817b3 | 22555 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
9219021c | 22556 | |
e142c38c | 22557 | attr = dwarf2_attr (die, DW_AT_name, cu); |
53832f31 | 22558 | if ((!attr || !DW_STRING (attr)) |
96553a0c | 22559 | && die->tag != DW_TAG_namespace |
53832f31 TT |
22560 | && die->tag != DW_TAG_class_type |
22561 | && die->tag != DW_TAG_interface_type | |
22562 | && die->tag != DW_TAG_structure_type | |
22563 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
22564 | return NULL; |
22565 | ||
22566 | switch (die->tag) | |
22567 | { | |
22568 | case DW_TAG_compile_unit: | |
95554aad | 22569 | case DW_TAG_partial_unit: |
71c25dea TT |
22570 | /* Compilation units have a DW_AT_name that is a filename, not |
22571 | a source language identifier. */ | |
22572 | case DW_TAG_enumeration_type: | |
22573 | case DW_TAG_enumerator: | |
22574 | /* These tags always have simple identifiers already; no need | |
22575 | to canonicalize them. */ | |
22576 | return DW_STRING (attr); | |
907af001 | 22577 | |
96553a0c DE |
22578 | case DW_TAG_namespace: |
22579 | if (attr != NULL && DW_STRING (attr) != NULL) | |
22580 | return DW_STRING (attr); | |
22581 | return CP_ANONYMOUS_NAMESPACE_STR; | |
22582 | ||
907af001 UW |
22583 | case DW_TAG_class_type: |
22584 | case DW_TAG_interface_type: | |
22585 | case DW_TAG_structure_type: | |
22586 | case DW_TAG_union_type: | |
22587 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
22588 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
22589 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
22590 | and GCC 4.4. We work around this problem by ignoring these. */ | |
53832f31 | 22591 | if (attr && DW_STRING (attr) |
61012eef GB |
22592 | && (startswith (DW_STRING (attr), "._") |
22593 | || startswith (DW_STRING (attr), "<anonymous"))) | |
907af001 | 22594 | return NULL; |
53832f31 TT |
22595 | |
22596 | /* GCC might emit a nameless typedef that has a linkage name. See | |
22597 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
22598 | if (!attr || DW_STRING (attr) == NULL) | |
22599 | { | |
df5c6c50 | 22600 | char *demangled = NULL; |
53832f31 | 22601 | |
73b9be8b | 22602 | attr = dw2_linkage_name_attr (die, cu); |
53832f31 TT |
22603 | if (attr == NULL || DW_STRING (attr) == NULL) |
22604 | return NULL; | |
22605 | ||
df5c6c50 JK |
22606 | /* Avoid demangling DW_STRING (attr) the second time on a second |
22607 | call for the same DIE. */ | |
22608 | if (!DW_STRING_IS_CANONICAL (attr)) | |
8de20a37 | 22609 | demangled = gdb_demangle (DW_STRING (attr), DMGL_TYPES); |
53832f31 TT |
22610 | |
22611 | if (demangled) | |
22612 | { | |
e6a959d6 | 22613 | const char *base; |
96408a79 | 22614 | |
53832f31 | 22615 | /* FIXME: we already did this for the partial symbol... */ |
34a68019 | 22616 | DW_STRING (attr) |
224c3ddb | 22617 | = ((const char *) |
e3b94546 | 22618 | obstack_copy0 (&objfile->per_bfd->storage_obstack, |
224c3ddb | 22619 | demangled, strlen (demangled))); |
53832f31 TT |
22620 | DW_STRING_IS_CANONICAL (attr) = 1; |
22621 | xfree (demangled); | |
96408a79 SA |
22622 | |
22623 | /* Strip any leading namespaces/classes, keep only the base name. | |
22624 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
22625 | base = strrchr (DW_STRING (attr), ':'); | |
22626 | if (base && base > DW_STRING (attr) && base[-1] == ':') | |
22627 | return &base[1]; | |
22628 | else | |
22629 | return DW_STRING (attr); | |
53832f31 TT |
22630 | } |
22631 | } | |
907af001 UW |
22632 | break; |
22633 | ||
71c25dea | 22634 | default: |
907af001 UW |
22635 | break; |
22636 | } | |
22637 | ||
22638 | if (!DW_STRING_IS_CANONICAL (attr)) | |
22639 | { | |
22640 | DW_STRING (attr) | |
22641 | = dwarf2_canonicalize_name (DW_STRING (attr), cu, | |
e3b94546 | 22642 | &objfile->per_bfd->storage_obstack); |
907af001 | 22643 | DW_STRING_IS_CANONICAL (attr) = 1; |
71c25dea | 22644 | } |
907af001 | 22645 | return DW_STRING (attr); |
9219021c DC |
22646 | } |
22647 | ||
22648 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
22649 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
22650 | containing the return value on output. */ | |
9219021c DC |
22651 | |
22652 | static struct die_info * | |
f2f0e013 | 22653 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
22654 | { |
22655 | struct attribute *attr; | |
9219021c | 22656 | |
f2f0e013 | 22657 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
22658 | if (attr == NULL) |
22659 | return NULL; | |
22660 | ||
f2f0e013 | 22661 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
22662 | } |
22663 | ||
c906108c SS |
22664 | /* Convert a DIE tag into its string name. */ |
22665 | ||
f39c6ffd | 22666 | static const char * |
aa1ee363 | 22667 | dwarf_tag_name (unsigned tag) |
c906108c | 22668 | { |
f39c6ffd TT |
22669 | const char *name = get_DW_TAG_name (tag); |
22670 | ||
22671 | if (name == NULL) | |
22672 | return "DW_TAG_<unknown>"; | |
22673 | ||
22674 | return name; | |
c906108c SS |
22675 | } |
22676 | ||
22677 | /* Convert a DWARF attribute code into its string name. */ | |
22678 | ||
f39c6ffd | 22679 | static const char * |
aa1ee363 | 22680 | dwarf_attr_name (unsigned attr) |
c906108c | 22681 | { |
f39c6ffd TT |
22682 | const char *name; |
22683 | ||
c764a876 | 22684 | #ifdef MIPS /* collides with DW_AT_HP_block_index */ |
f39c6ffd TT |
22685 | if (attr == DW_AT_MIPS_fde) |
22686 | return "DW_AT_MIPS_fde"; | |
22687 | #else | |
22688 | if (attr == DW_AT_HP_block_index) | |
22689 | return "DW_AT_HP_block_index"; | |
c764a876 | 22690 | #endif |
f39c6ffd TT |
22691 | |
22692 | name = get_DW_AT_name (attr); | |
22693 | ||
22694 | if (name == NULL) | |
22695 | return "DW_AT_<unknown>"; | |
22696 | ||
22697 | return name; | |
c906108c SS |
22698 | } |
22699 | ||
22700 | /* Convert a DWARF value form code into its string name. */ | |
22701 | ||
f39c6ffd | 22702 | static const char * |
aa1ee363 | 22703 | dwarf_form_name (unsigned form) |
c906108c | 22704 | { |
f39c6ffd TT |
22705 | const char *name = get_DW_FORM_name (form); |
22706 | ||
22707 | if (name == NULL) | |
22708 | return "DW_FORM_<unknown>"; | |
22709 | ||
22710 | return name; | |
c906108c SS |
22711 | } |
22712 | ||
a121b7c1 | 22713 | static const char * |
fba45db2 | 22714 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
22715 | { |
22716 | if (mybool) | |
22717 | return "TRUE"; | |
22718 | else | |
22719 | return "FALSE"; | |
22720 | } | |
22721 | ||
22722 | /* Convert a DWARF type code into its string name. */ | |
22723 | ||
f39c6ffd | 22724 | static const char * |
aa1ee363 | 22725 | dwarf_type_encoding_name (unsigned enc) |
c906108c | 22726 | { |
f39c6ffd | 22727 | const char *name = get_DW_ATE_name (enc); |
c906108c | 22728 | |
f39c6ffd TT |
22729 | if (name == NULL) |
22730 | return "DW_ATE_<unknown>"; | |
c906108c | 22731 | |
f39c6ffd | 22732 | return name; |
c906108c | 22733 | } |
c906108c | 22734 | |
f9aca02d | 22735 | static void |
d97bc12b | 22736 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
22737 | { |
22738 | unsigned int i; | |
22739 | ||
d97bc12b | 22740 | print_spaces (indent, f); |
9d8780f0 | 22741 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset %s)\n", |
9c541725 | 22742 | dwarf_tag_name (die->tag), die->abbrev, |
9d8780f0 | 22743 | sect_offset_str (die->sect_off)); |
d97bc12b DE |
22744 | |
22745 | if (die->parent != NULL) | |
22746 | { | |
22747 | print_spaces (indent, f); | |
9d8780f0 SM |
22748 | fprintf_unfiltered (f, " parent at offset: %s\n", |
22749 | sect_offset_str (die->parent->sect_off)); | |
d97bc12b DE |
22750 | } |
22751 | ||
22752 | print_spaces (indent, f); | |
22753 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 22754 | dwarf_bool_name (die->child != NULL)); |
c906108c | 22755 | |
d97bc12b DE |
22756 | print_spaces (indent, f); |
22757 | fprintf_unfiltered (f, " attributes:\n"); | |
22758 | ||
c906108c SS |
22759 | for (i = 0; i < die->num_attrs; ++i) |
22760 | { | |
d97bc12b DE |
22761 | print_spaces (indent, f); |
22762 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
22763 | dwarf_attr_name (die->attrs[i].name), |
22764 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 22765 | |
c906108c SS |
22766 | switch (die->attrs[i].form) |
22767 | { | |
c906108c | 22768 | case DW_FORM_addr: |
3019eac3 | 22769 | case DW_FORM_GNU_addr_index: |
d97bc12b | 22770 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 22771 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
22772 | break; |
22773 | case DW_FORM_block2: | |
22774 | case DW_FORM_block4: | |
22775 | case DW_FORM_block: | |
22776 | case DW_FORM_block1: | |
56eb65bd SP |
22777 | fprintf_unfiltered (f, "block: size %s", |
22778 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
c906108c | 22779 | break; |
2dc7f7b3 | 22780 | case DW_FORM_exprloc: |
56eb65bd SP |
22781 | fprintf_unfiltered (f, "expression: size %s", |
22782 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
2dc7f7b3 | 22783 | break; |
0224619f JK |
22784 | case DW_FORM_data16: |
22785 | fprintf_unfiltered (f, "constant of 16 bytes"); | |
22786 | break; | |
4568ecf9 DE |
22787 | case DW_FORM_ref_addr: |
22788 | fprintf_unfiltered (f, "ref address: "); | |
22789 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
22790 | break; | |
36586728 TT |
22791 | case DW_FORM_GNU_ref_alt: |
22792 | fprintf_unfiltered (f, "alt ref address: "); | |
22793 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
22794 | break; | |
10b3939b DJ |
22795 | case DW_FORM_ref1: |
22796 | case DW_FORM_ref2: | |
22797 | case DW_FORM_ref4: | |
4568ecf9 DE |
22798 | case DW_FORM_ref8: |
22799 | case DW_FORM_ref_udata: | |
d97bc12b | 22800 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
4568ecf9 | 22801 | (long) (DW_UNSND (&die->attrs[i]))); |
10b3939b | 22802 | break; |
c906108c SS |
22803 | case DW_FORM_data1: |
22804 | case DW_FORM_data2: | |
22805 | case DW_FORM_data4: | |
ce5d95e1 | 22806 | case DW_FORM_data8: |
c906108c SS |
22807 | case DW_FORM_udata: |
22808 | case DW_FORM_sdata: | |
43bbcdc2 PH |
22809 | fprintf_unfiltered (f, "constant: %s", |
22810 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 22811 | break; |
2dc7f7b3 TT |
22812 | case DW_FORM_sec_offset: |
22813 | fprintf_unfiltered (f, "section offset: %s", | |
22814 | pulongest (DW_UNSND (&die->attrs[i]))); | |
22815 | break; | |
55f1336d | 22816 | case DW_FORM_ref_sig8: |
ac9ec31b DE |
22817 | fprintf_unfiltered (f, "signature: %s", |
22818 | hex_string (DW_SIGNATURE (&die->attrs[i]))); | |
348e048f | 22819 | break; |
c906108c | 22820 | case DW_FORM_string: |
4bdf3d34 | 22821 | case DW_FORM_strp: |
43988095 | 22822 | case DW_FORM_line_strp: |
3019eac3 | 22823 | case DW_FORM_GNU_str_index: |
36586728 | 22824 | case DW_FORM_GNU_strp_alt: |
8285870a | 22825 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 22826 | DW_STRING (&die->attrs[i]) |
8285870a JK |
22827 | ? DW_STRING (&die->attrs[i]) : "", |
22828 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
22829 | break; |
22830 | case DW_FORM_flag: | |
22831 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 22832 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 22833 | else |
d97bc12b | 22834 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 22835 | break; |
2dc7f7b3 TT |
22836 | case DW_FORM_flag_present: |
22837 | fprintf_unfiltered (f, "flag: TRUE"); | |
22838 | break; | |
a8329558 | 22839 | case DW_FORM_indirect: |
0963b4bd MS |
22840 | /* The reader will have reduced the indirect form to |
22841 | the "base form" so this form should not occur. */ | |
3e43a32a MS |
22842 | fprintf_unfiltered (f, |
22843 | "unexpected attribute form: DW_FORM_indirect"); | |
a8329558 | 22844 | break; |
663c44ac JK |
22845 | case DW_FORM_implicit_const: |
22846 | fprintf_unfiltered (f, "constant: %s", | |
22847 | plongest (DW_SND (&die->attrs[i]))); | |
22848 | break; | |
c906108c | 22849 | default: |
d97bc12b | 22850 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 22851 | die->attrs[i].form); |
d97bc12b | 22852 | break; |
c906108c | 22853 | } |
d97bc12b | 22854 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
22855 | } |
22856 | } | |
22857 | ||
f9aca02d | 22858 | static void |
d97bc12b | 22859 | dump_die_for_error (struct die_info *die) |
c906108c | 22860 | { |
d97bc12b DE |
22861 | dump_die_shallow (gdb_stderr, 0, die); |
22862 | } | |
22863 | ||
22864 | static void | |
22865 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
22866 | { | |
22867 | int indent = level * 4; | |
22868 | ||
22869 | gdb_assert (die != NULL); | |
22870 | ||
22871 | if (level >= max_level) | |
22872 | return; | |
22873 | ||
22874 | dump_die_shallow (f, indent, die); | |
22875 | ||
22876 | if (die->child != NULL) | |
c906108c | 22877 | { |
d97bc12b DE |
22878 | print_spaces (indent, f); |
22879 | fprintf_unfiltered (f, " Children:"); | |
22880 | if (level + 1 < max_level) | |
22881 | { | |
22882 | fprintf_unfiltered (f, "\n"); | |
22883 | dump_die_1 (f, level + 1, max_level, die->child); | |
22884 | } | |
22885 | else | |
22886 | { | |
3e43a32a MS |
22887 | fprintf_unfiltered (f, |
22888 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
22889 | } |
22890 | } | |
22891 | ||
22892 | if (die->sibling != NULL && level > 0) | |
22893 | { | |
22894 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
22895 | } |
22896 | } | |
22897 | ||
d97bc12b DE |
22898 | /* This is called from the pdie macro in gdbinit.in. |
22899 | It's not static so gcc will keep a copy callable from gdb. */ | |
22900 | ||
22901 | void | |
22902 | dump_die (struct die_info *die, int max_level) | |
22903 | { | |
22904 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
22905 | } | |
22906 | ||
f9aca02d | 22907 | static void |
51545339 | 22908 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22909 | { |
51545339 | 22910 | void **slot; |
c906108c | 22911 | |
9c541725 PA |
22912 | slot = htab_find_slot_with_hash (cu->die_hash, die, |
22913 | to_underlying (die->sect_off), | |
b64f50a1 | 22914 | INSERT); |
51545339 DJ |
22915 | |
22916 | *slot = die; | |
c906108c SS |
22917 | } |
22918 | ||
b64f50a1 JK |
22919 | /* Return DIE offset of ATTR. Return 0 with complaint if ATTR is not of the |
22920 | required kind. */ | |
22921 | ||
22922 | static sect_offset | |
ff39bb5e | 22923 | dwarf2_get_ref_die_offset (const struct attribute *attr) |
93311388 | 22924 | { |
7771576e | 22925 | if (attr_form_is_ref (attr)) |
9c541725 | 22926 | return (sect_offset) DW_UNSND (attr); |
93311388 | 22927 | |
b98664d3 | 22928 | complaint (_("unsupported die ref attribute form: '%s'"), |
93311388 | 22929 | dwarf_form_name (attr->form)); |
9c541725 | 22930 | return {}; |
c906108c SS |
22931 | } |
22932 | ||
43bbcdc2 PH |
22933 | /* Return the constant value held by ATTR. Return DEFAULT_VALUE if |
22934 | * the value held by the attribute is not constant. */ | |
a02abb62 | 22935 | |
43bbcdc2 | 22936 | static LONGEST |
ff39bb5e | 22937 | dwarf2_get_attr_constant_value (const struct attribute *attr, int default_value) |
a02abb62 | 22938 | { |
663c44ac | 22939 | if (attr->form == DW_FORM_sdata || attr->form == DW_FORM_implicit_const) |
a02abb62 JB |
22940 | return DW_SND (attr); |
22941 | else if (attr->form == DW_FORM_udata | |
22942 | || attr->form == DW_FORM_data1 | |
22943 | || attr->form == DW_FORM_data2 | |
22944 | || attr->form == DW_FORM_data4 | |
22945 | || attr->form == DW_FORM_data8) | |
22946 | return DW_UNSND (attr); | |
22947 | else | |
22948 | { | |
0224619f | 22949 | /* For DW_FORM_data16 see attr_form_is_constant. */ |
b98664d3 | 22950 | complaint (_("Attribute value is not a constant (%s)"), |
a02abb62 JB |
22951 | dwarf_form_name (attr->form)); |
22952 | return default_value; | |
22953 | } | |
22954 | } | |
22955 | ||
348e048f DE |
22956 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
22957 | On entry *REF_CU is the CU of SRC_DIE. | |
22958 | On exit *REF_CU is the CU of the result. */ | |
22959 | ||
22960 | static struct die_info * | |
ff39bb5e | 22961 | follow_die_ref_or_sig (struct die_info *src_die, const struct attribute *attr, |
348e048f DE |
22962 | struct dwarf2_cu **ref_cu) |
22963 | { | |
22964 | struct die_info *die; | |
22965 | ||
7771576e | 22966 | if (attr_form_is_ref (attr)) |
348e048f | 22967 | die = follow_die_ref (src_die, attr, ref_cu); |
55f1336d | 22968 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
22969 | die = follow_die_sig (src_die, attr, ref_cu); |
22970 | else | |
22971 | { | |
22972 | dump_die_for_error (src_die); | |
22973 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
518817b3 | 22974 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
348e048f DE |
22975 | } |
22976 | ||
22977 | return die; | |
03dd20cc DJ |
22978 | } |
22979 | ||
5c631832 | 22980 | /* Follow reference OFFSET. |
673bfd45 DE |
22981 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
22982 | On exit *REF_CU is the CU of the result. | |
22983 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 22984 | |
f9aca02d | 22985 | static struct die_info * |
9c541725 | 22986 | follow_die_offset (sect_offset sect_off, int offset_in_dwz, |
36586728 | 22987 | struct dwarf2_cu **ref_cu) |
c906108c | 22988 | { |
10b3939b | 22989 | struct die_info temp_die; |
f2f0e013 | 22990 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
518817b3 SM |
22991 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22992 | = cu->per_cu->dwarf2_per_objfile; | |
10b3939b | 22993 | |
348e048f DE |
22994 | gdb_assert (cu->per_cu != NULL); |
22995 | ||
98bfdba5 PA |
22996 | target_cu = cu; |
22997 | ||
3019eac3 | 22998 | if (cu->per_cu->is_debug_types) |
348e048f DE |
22999 | { |
23000 | /* .debug_types CUs cannot reference anything outside their CU. | |
23001 | If they need to, they have to reference a signatured type via | |
55f1336d | 23002 | DW_FORM_ref_sig8. */ |
9c541725 | 23003 | if (!offset_in_cu_p (&cu->header, sect_off)) |
5c631832 | 23004 | return NULL; |
348e048f | 23005 | } |
36586728 | 23006 | else if (offset_in_dwz != cu->per_cu->is_dwz |
9c541725 | 23007 | || !offset_in_cu_p (&cu->header, sect_off)) |
10b3939b DJ |
23008 | { |
23009 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 23010 | |
9c541725 | 23011 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
ed2dc618 | 23012 | dwarf2_per_objfile); |
03dd20cc DJ |
23013 | |
23014 | /* If necessary, add it to the queue and load its DIEs. */ | |
95554aad | 23015 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
58f0c718 | 23016 | load_full_comp_unit (per_cu, false, cu->language); |
03dd20cc | 23017 | |
10b3939b DJ |
23018 | target_cu = per_cu->cu; |
23019 | } | |
98bfdba5 PA |
23020 | else if (cu->dies == NULL) |
23021 | { | |
23022 | /* We're loading full DIEs during partial symbol reading. */ | |
23023 | gdb_assert (dwarf2_per_objfile->reading_partial_symbols); | |
58f0c718 | 23024 | load_full_comp_unit (cu->per_cu, false, language_minimal); |
98bfdba5 | 23025 | } |
c906108c | 23026 | |
f2f0e013 | 23027 | *ref_cu = target_cu; |
9c541725 | 23028 | temp_die.sect_off = sect_off; |
9a3c8263 | 23029 | return (struct die_info *) htab_find_with_hash (target_cu->die_hash, |
9c541725 PA |
23030 | &temp_die, |
23031 | to_underlying (sect_off)); | |
5c631832 | 23032 | } |
10b3939b | 23033 | |
5c631832 JK |
23034 | /* Follow reference attribute ATTR of SRC_DIE. |
23035 | On entry *REF_CU is the CU of SRC_DIE. | |
23036 | On exit *REF_CU is the CU of the result. */ | |
23037 | ||
23038 | static struct die_info * | |
ff39bb5e | 23039 | follow_die_ref (struct die_info *src_die, const struct attribute *attr, |
5c631832 JK |
23040 | struct dwarf2_cu **ref_cu) |
23041 | { | |
9c541725 | 23042 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
5c631832 JK |
23043 | struct dwarf2_cu *cu = *ref_cu; |
23044 | struct die_info *die; | |
23045 | ||
9c541725 | 23046 | die = follow_die_offset (sect_off, |
36586728 TT |
23047 | (attr->form == DW_FORM_GNU_ref_alt |
23048 | || cu->per_cu->is_dwz), | |
23049 | ref_cu); | |
5c631832 | 23050 | if (!die) |
9d8780f0 SM |
23051 | error (_("Dwarf Error: Cannot find DIE at %s referenced from DIE " |
23052 | "at %s [in module %s]"), | |
23053 | sect_offset_str (sect_off), sect_offset_str (src_die->sect_off), | |
518817b3 | 23054 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
348e048f | 23055 | |
5c631832 JK |
23056 | return die; |
23057 | } | |
23058 | ||
9c541725 | 23059 | /* Return DWARF block referenced by DW_AT_location of DIE at SECT_OFF at PER_CU. |
d83e736b | 23060 | Returned value is intended for DW_OP_call*. Returned |
e3b94546 SM |
23061 | dwarf2_locexpr_baton->data has lifetime of |
23062 | PER_CU->DWARF2_PER_OBJFILE->OBJFILE. */ | |
5c631832 JK |
23063 | |
23064 | struct dwarf2_locexpr_baton | |
9c541725 | 23065 | dwarf2_fetch_die_loc_sect_off (sect_offset sect_off, |
8b9737bf TT |
23066 | struct dwarf2_per_cu_data *per_cu, |
23067 | CORE_ADDR (*get_frame_pc) (void *baton), | |
e4a62c65 | 23068 | void *baton, bool resolve_abstract_p) |
5c631832 | 23069 | { |
918dd910 | 23070 | struct dwarf2_cu *cu; |
5c631832 JK |
23071 | struct die_info *die; |
23072 | struct attribute *attr; | |
23073 | struct dwarf2_locexpr_baton retval; | |
12359b5e SM |
23074 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
23075 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8cf6f0b1 | 23076 | |
918dd910 | 23077 | if (per_cu->cu == NULL) |
58f0c718 | 23078 | load_cu (per_cu, false); |
918dd910 | 23079 | cu = per_cu->cu; |
cc12ce38 DE |
23080 | if (cu == NULL) |
23081 | { | |
23082 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
23083 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
23084 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
23085 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 23086 | } |
918dd910 | 23087 | |
9c541725 | 23088 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
5c631832 | 23089 | if (!die) |
9d8780f0 SM |
23090 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
23091 | sect_offset_str (sect_off), objfile_name (objfile)); | |
5c631832 JK |
23092 | |
23093 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
e4a62c65 TV |
23094 | if (!attr && resolve_abstract_p |
23095 | && (dwarf2_per_objfile->abstract_to_concrete.find (die) | |
23096 | != dwarf2_per_objfile->abstract_to_concrete.end ())) | |
23097 | { | |
23098 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
23099 | ||
23100 | for (const auto &cand : dwarf2_per_objfile->abstract_to_concrete[die]) | |
23101 | { | |
23102 | if (!cand->parent | |
23103 | || cand->parent->tag != DW_TAG_subprogram) | |
23104 | continue; | |
23105 | ||
23106 | CORE_ADDR pc_low, pc_high; | |
23107 | get_scope_pc_bounds (cand->parent, &pc_low, &pc_high, cu); | |
23108 | if (pc_low == ((CORE_ADDR) -1) | |
23109 | || !(pc_low <= pc && pc < pc_high)) | |
23110 | continue; | |
23111 | ||
23112 | die = cand; | |
23113 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
23114 | break; | |
23115 | } | |
23116 | } | |
23117 | ||
5c631832 JK |
23118 | if (!attr) |
23119 | { | |
e103e986 JK |
23120 | /* DWARF: "If there is no such attribute, then there is no effect.". |
23121 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 23122 | |
e103e986 | 23123 | retval.data = NULL; |
5c631832 JK |
23124 | retval.size = 0; |
23125 | } | |
8cf6f0b1 TT |
23126 | else if (attr_form_is_section_offset (attr)) |
23127 | { | |
23128 | struct dwarf2_loclist_baton loclist_baton; | |
23129 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
23130 | size_t size; | |
23131 | ||
23132 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
23133 | ||
23134 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
23135 | &size, pc); | |
23136 | retval.size = size; | |
23137 | } | |
5c631832 JK |
23138 | else |
23139 | { | |
23140 | if (!attr_form_is_block (attr)) | |
9d8780f0 | 23141 | error (_("Dwarf Error: DIE at %s referenced in module %s " |
5c631832 | 23142 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), |
9d8780f0 | 23143 | sect_offset_str (sect_off), objfile_name (objfile)); |
5c631832 JK |
23144 | |
23145 | retval.data = DW_BLOCK (attr)->data; | |
23146 | retval.size = DW_BLOCK (attr)->size; | |
23147 | } | |
23148 | retval.per_cu = cu->per_cu; | |
918dd910 | 23149 | |
ed2dc618 | 23150 | age_cached_comp_units (dwarf2_per_objfile); |
918dd910 | 23151 | |
5c631832 | 23152 | return retval; |
348e048f DE |
23153 | } |
23154 | ||
8b9737bf TT |
23155 | /* Like dwarf2_fetch_die_loc_sect_off, but take a CU |
23156 | offset. */ | |
23157 | ||
23158 | struct dwarf2_locexpr_baton | |
23159 | dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu, | |
23160 | struct dwarf2_per_cu_data *per_cu, | |
23161 | CORE_ADDR (*get_frame_pc) (void *baton), | |
23162 | void *baton) | |
23163 | { | |
9c541725 | 23164 | sect_offset sect_off = per_cu->sect_off + to_underlying (offset_in_cu); |
8b9737bf | 23165 | |
9c541725 | 23166 | return dwarf2_fetch_die_loc_sect_off (sect_off, per_cu, get_frame_pc, baton); |
8b9737bf TT |
23167 | } |
23168 | ||
b6807d98 TT |
23169 | /* Write a constant of a given type as target-ordered bytes into |
23170 | OBSTACK. */ | |
23171 | ||
23172 | static const gdb_byte * | |
23173 | write_constant_as_bytes (struct obstack *obstack, | |
23174 | enum bfd_endian byte_order, | |
23175 | struct type *type, | |
23176 | ULONGEST value, | |
23177 | LONGEST *len) | |
23178 | { | |
23179 | gdb_byte *result; | |
23180 | ||
23181 | *len = TYPE_LENGTH (type); | |
224c3ddb | 23182 | result = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
23183 | store_unsigned_integer (result, *len, byte_order, value); |
23184 | ||
23185 | return result; | |
23186 | } | |
23187 | ||
23188 | /* If the DIE at OFFSET in PER_CU has a DW_AT_const_value, return a | |
23189 | pointer to the constant bytes and set LEN to the length of the | |
23190 | data. If memory is needed, allocate it on OBSTACK. If the DIE | |
23191 | does not have a DW_AT_const_value, return NULL. */ | |
23192 | ||
23193 | const gdb_byte * | |
9c541725 | 23194 | dwarf2_fetch_constant_bytes (sect_offset sect_off, |
b6807d98 TT |
23195 | struct dwarf2_per_cu_data *per_cu, |
23196 | struct obstack *obstack, | |
23197 | LONGEST *len) | |
23198 | { | |
23199 | struct dwarf2_cu *cu; | |
23200 | struct die_info *die; | |
23201 | struct attribute *attr; | |
23202 | const gdb_byte *result = NULL; | |
23203 | struct type *type; | |
23204 | LONGEST value; | |
23205 | enum bfd_endian byte_order; | |
e3b94546 | 23206 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
b6807d98 | 23207 | |
b6807d98 | 23208 | if (per_cu->cu == NULL) |
58f0c718 | 23209 | load_cu (per_cu, false); |
b6807d98 | 23210 | cu = per_cu->cu; |
cc12ce38 DE |
23211 | if (cu == NULL) |
23212 | { | |
23213 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
23214 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
23215 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
23216 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 23217 | } |
b6807d98 | 23218 | |
9c541725 | 23219 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
b6807d98 | 23220 | if (!die) |
9d8780f0 SM |
23221 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
23222 | sect_offset_str (sect_off), objfile_name (objfile)); | |
b6807d98 TT |
23223 | |
23224 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
23225 | if (attr == NULL) | |
23226 | return NULL; | |
23227 | ||
e3b94546 | 23228 | byte_order = (bfd_big_endian (objfile->obfd) |
b6807d98 TT |
23229 | ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); |
23230 | ||
23231 | switch (attr->form) | |
23232 | { | |
23233 | case DW_FORM_addr: | |
23234 | case DW_FORM_GNU_addr_index: | |
23235 | { | |
23236 | gdb_byte *tem; | |
23237 | ||
23238 | *len = cu->header.addr_size; | |
224c3ddb | 23239 | tem = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
23240 | store_unsigned_integer (tem, *len, byte_order, DW_ADDR (attr)); |
23241 | result = tem; | |
23242 | } | |
23243 | break; | |
23244 | case DW_FORM_string: | |
23245 | case DW_FORM_strp: | |
23246 | case DW_FORM_GNU_str_index: | |
23247 | case DW_FORM_GNU_strp_alt: | |
23248 | /* DW_STRING is already allocated on the objfile obstack, point | |
23249 | directly to it. */ | |
23250 | result = (const gdb_byte *) DW_STRING (attr); | |
23251 | *len = strlen (DW_STRING (attr)); | |
23252 | break; | |
23253 | case DW_FORM_block1: | |
23254 | case DW_FORM_block2: | |
23255 | case DW_FORM_block4: | |
23256 | case DW_FORM_block: | |
23257 | case DW_FORM_exprloc: | |
0224619f | 23258 | case DW_FORM_data16: |
b6807d98 TT |
23259 | result = DW_BLOCK (attr)->data; |
23260 | *len = DW_BLOCK (attr)->size; | |
23261 | break; | |
23262 | ||
23263 | /* The DW_AT_const_value attributes are supposed to carry the | |
23264 | symbol's value "represented as it would be on the target | |
23265 | architecture." By the time we get here, it's already been | |
23266 | converted to host endianness, so we just need to sign- or | |
23267 | zero-extend it as appropriate. */ | |
23268 | case DW_FORM_data1: | |
23269 | type = die_type (die, cu); | |
23270 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 8); | |
23271 | if (result == NULL) | |
23272 | result = write_constant_as_bytes (obstack, byte_order, | |
23273 | type, value, len); | |
23274 | break; | |
23275 | case DW_FORM_data2: | |
23276 | type = die_type (die, cu); | |
23277 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 16); | |
23278 | if (result == NULL) | |
23279 | result = write_constant_as_bytes (obstack, byte_order, | |
23280 | type, value, len); | |
23281 | break; | |
23282 | case DW_FORM_data4: | |
23283 | type = die_type (die, cu); | |
23284 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 32); | |
23285 | if (result == NULL) | |
23286 | result = write_constant_as_bytes (obstack, byte_order, | |
23287 | type, value, len); | |
23288 | break; | |
23289 | case DW_FORM_data8: | |
23290 | type = die_type (die, cu); | |
23291 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 64); | |
23292 | if (result == NULL) | |
23293 | result = write_constant_as_bytes (obstack, byte_order, | |
23294 | type, value, len); | |
23295 | break; | |
23296 | ||
23297 | case DW_FORM_sdata: | |
663c44ac | 23298 | case DW_FORM_implicit_const: |
b6807d98 TT |
23299 | type = die_type (die, cu); |
23300 | result = write_constant_as_bytes (obstack, byte_order, | |
23301 | type, DW_SND (attr), len); | |
23302 | break; | |
23303 | ||
23304 | case DW_FORM_udata: | |
23305 | type = die_type (die, cu); | |
23306 | result = write_constant_as_bytes (obstack, byte_order, | |
23307 | type, DW_UNSND (attr), len); | |
23308 | break; | |
23309 | ||
23310 | default: | |
b98664d3 | 23311 | complaint (_("unsupported const value attribute form: '%s'"), |
b6807d98 TT |
23312 | dwarf_form_name (attr->form)); |
23313 | break; | |
23314 | } | |
23315 | ||
23316 | return result; | |
23317 | } | |
23318 | ||
7942e96e AA |
23319 | /* Return the type of the die at OFFSET in PER_CU. Return NULL if no |
23320 | valid type for this die is found. */ | |
23321 | ||
23322 | struct type * | |
9c541725 | 23323 | dwarf2_fetch_die_type_sect_off (sect_offset sect_off, |
7942e96e AA |
23324 | struct dwarf2_per_cu_data *per_cu) |
23325 | { | |
23326 | struct dwarf2_cu *cu; | |
23327 | struct die_info *die; | |
23328 | ||
7942e96e | 23329 | if (per_cu->cu == NULL) |
58f0c718 | 23330 | load_cu (per_cu, false); |
7942e96e AA |
23331 | cu = per_cu->cu; |
23332 | if (!cu) | |
23333 | return NULL; | |
23334 | ||
9c541725 | 23335 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
7942e96e AA |
23336 | if (!die) |
23337 | return NULL; | |
23338 | ||
23339 | return die_type (die, cu); | |
23340 | } | |
23341 | ||
8a9b8146 TT |
23342 | /* Return the type of the DIE at DIE_OFFSET in the CU named by |
23343 | PER_CU. */ | |
23344 | ||
23345 | struct type * | |
b64f50a1 | 23346 | dwarf2_get_die_type (cu_offset die_offset, |
8a9b8146 TT |
23347 | struct dwarf2_per_cu_data *per_cu) |
23348 | { | |
9c541725 | 23349 | sect_offset die_offset_sect = per_cu->sect_off + to_underlying (die_offset); |
b64f50a1 | 23350 | return get_die_type_at_offset (die_offset_sect, per_cu); |
8a9b8146 TT |
23351 | } |
23352 | ||
ac9ec31b | 23353 | /* Follow type unit SIG_TYPE referenced by SRC_DIE. |
348e048f | 23354 | On entry *REF_CU is the CU of SRC_DIE. |
ac9ec31b DE |
23355 | On exit *REF_CU is the CU of the result. |
23356 | Returns NULL if the referenced DIE isn't found. */ | |
348e048f DE |
23357 | |
23358 | static struct die_info * | |
ac9ec31b DE |
23359 | follow_die_sig_1 (struct die_info *src_die, struct signatured_type *sig_type, |
23360 | struct dwarf2_cu **ref_cu) | |
348e048f | 23361 | { |
348e048f | 23362 | struct die_info temp_die; |
348e048f DE |
23363 | struct dwarf2_cu *sig_cu; |
23364 | struct die_info *die; | |
23365 | ||
ac9ec31b DE |
23366 | /* While it might be nice to assert sig_type->type == NULL here, |
23367 | we can get here for DW_AT_imported_declaration where we need | |
23368 | the DIE not the type. */ | |
348e048f DE |
23369 | |
23370 | /* If necessary, add it to the queue and load its DIEs. */ | |
23371 | ||
95554aad | 23372 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, language_minimal)) |
a0f42c21 | 23373 | read_signatured_type (sig_type); |
348e048f | 23374 | |
348e048f | 23375 | sig_cu = sig_type->per_cu.cu; |
69d751e3 | 23376 | gdb_assert (sig_cu != NULL); |
9c541725 PA |
23377 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
23378 | temp_die.sect_off = sig_type->type_offset_in_section; | |
9a3c8263 | 23379 | die = (struct die_info *) htab_find_with_hash (sig_cu->die_hash, &temp_die, |
9c541725 | 23380 | to_underlying (temp_die.sect_off)); |
348e048f DE |
23381 | if (die) |
23382 | { | |
ed2dc618 | 23383 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 23384 | = (*ref_cu)->per_cu->dwarf2_per_objfile; |
ed2dc618 | 23385 | |
796a7ff8 DE |
23386 | /* For .gdb_index version 7 keep track of included TUs. |
23387 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
23388 | if (dwarf2_per_objfile->index_table != NULL | |
23389 | && dwarf2_per_objfile->index_table->version <= 7) | |
23390 | { | |
23391 | VEC_safe_push (dwarf2_per_cu_ptr, | |
23392 | (*ref_cu)->per_cu->imported_symtabs, | |
23393 | sig_cu->per_cu); | |
23394 | } | |
23395 | ||
348e048f DE |
23396 | *ref_cu = sig_cu; |
23397 | return die; | |
23398 | } | |
23399 | ||
ac9ec31b DE |
23400 | return NULL; |
23401 | } | |
23402 | ||
23403 | /* Follow signatured type referenced by ATTR in SRC_DIE. | |
23404 | On entry *REF_CU is the CU of SRC_DIE. | |
23405 | On exit *REF_CU is the CU of the result. | |
23406 | The result is the DIE of the type. | |
23407 | If the referenced type cannot be found an error is thrown. */ | |
23408 | ||
23409 | static struct die_info * | |
ff39bb5e | 23410 | follow_die_sig (struct die_info *src_die, const struct attribute *attr, |
ac9ec31b DE |
23411 | struct dwarf2_cu **ref_cu) |
23412 | { | |
23413 | ULONGEST signature = DW_SIGNATURE (attr); | |
23414 | struct signatured_type *sig_type; | |
23415 | struct die_info *die; | |
23416 | ||
23417 | gdb_assert (attr->form == DW_FORM_ref_sig8); | |
23418 | ||
a2ce51a0 | 23419 | sig_type = lookup_signatured_type (*ref_cu, signature); |
ac9ec31b DE |
23420 | /* sig_type will be NULL if the signatured type is missing from |
23421 | the debug info. */ | |
23422 | if (sig_type == NULL) | |
23423 | { | |
23424 | error (_("Dwarf Error: Cannot find signatured DIE %s referenced" | |
9d8780f0 SM |
23425 | " from DIE at %s [in module %s]"), |
23426 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
518817b3 | 23427 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23428 | } |
23429 | ||
23430 | die = follow_die_sig_1 (src_die, sig_type, ref_cu); | |
23431 | if (die == NULL) | |
23432 | { | |
23433 | dump_die_for_error (src_die); | |
23434 | error (_("Dwarf Error: Problem reading signatured DIE %s referenced" | |
9d8780f0 SM |
23435 | " from DIE at %s [in module %s]"), |
23436 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
518817b3 | 23437 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23438 | } |
23439 | ||
23440 | return die; | |
23441 | } | |
23442 | ||
23443 | /* Get the type specified by SIGNATURE referenced in DIE/CU, | |
23444 | reading in and processing the type unit if necessary. */ | |
23445 | ||
23446 | static struct type * | |
23447 | get_signatured_type (struct die_info *die, ULONGEST signature, | |
23448 | struct dwarf2_cu *cu) | |
23449 | { | |
518817b3 SM |
23450 | struct dwarf2_per_objfile *dwarf2_per_objfile |
23451 | = cu->per_cu->dwarf2_per_objfile; | |
ac9ec31b DE |
23452 | struct signatured_type *sig_type; |
23453 | struct dwarf2_cu *type_cu; | |
23454 | struct die_info *type_die; | |
23455 | struct type *type; | |
23456 | ||
a2ce51a0 | 23457 | sig_type = lookup_signatured_type (cu, signature); |
ac9ec31b DE |
23458 | /* sig_type will be NULL if the signatured type is missing from |
23459 | the debug info. */ | |
23460 | if (sig_type == NULL) | |
23461 | { | |
b98664d3 | 23462 | complaint (_("Dwarf Error: Cannot find signatured DIE %s referenced" |
9d8780f0 SM |
23463 | " from DIE at %s [in module %s]"), |
23464 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 23465 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23466 | return build_error_marker_type (cu, die); |
23467 | } | |
23468 | ||
23469 | /* If we already know the type we're done. */ | |
23470 | if (sig_type->type != NULL) | |
23471 | return sig_type->type; | |
23472 | ||
23473 | type_cu = cu; | |
23474 | type_die = follow_die_sig_1 (die, sig_type, &type_cu); | |
23475 | if (type_die != NULL) | |
23476 | { | |
23477 | /* N.B. We need to call get_die_type to ensure only one type for this DIE | |
23478 | is created. This is important, for example, because for c++ classes | |
23479 | we need TYPE_NAME set which is only done by new_symbol. Blech. */ | |
23480 | type = read_type_die (type_die, type_cu); | |
23481 | if (type == NULL) | |
23482 | { | |
b98664d3 | 23483 | complaint (_("Dwarf Error: Cannot build signatured type %s" |
9d8780f0 SM |
23484 | " referenced from DIE at %s [in module %s]"), |
23485 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 23486 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23487 | type = build_error_marker_type (cu, die); |
23488 | } | |
23489 | } | |
23490 | else | |
23491 | { | |
b98664d3 | 23492 | complaint (_("Dwarf Error: Problem reading signatured DIE %s referenced" |
9d8780f0 SM |
23493 | " from DIE at %s [in module %s]"), |
23494 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 23495 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23496 | type = build_error_marker_type (cu, die); |
23497 | } | |
23498 | sig_type->type = type; | |
23499 | ||
23500 | return type; | |
23501 | } | |
23502 | ||
23503 | /* Get the type specified by the DW_AT_signature ATTR in DIE/CU, | |
23504 | reading in and processing the type unit if necessary. */ | |
23505 | ||
23506 | static struct type * | |
ff39bb5e | 23507 | get_DW_AT_signature_type (struct die_info *die, const struct attribute *attr, |
b385a60d | 23508 | struct dwarf2_cu *cu) /* ARI: editCase function */ |
ac9ec31b DE |
23509 | { |
23510 | /* Yes, DW_AT_signature can use a non-ref_sig8 reference. */ | |
7771576e | 23511 | if (attr_form_is_ref (attr)) |
ac9ec31b DE |
23512 | { |
23513 | struct dwarf2_cu *type_cu = cu; | |
23514 | struct die_info *type_die = follow_die_ref (die, attr, &type_cu); | |
23515 | ||
23516 | return read_type_die (type_die, type_cu); | |
23517 | } | |
23518 | else if (attr->form == DW_FORM_ref_sig8) | |
23519 | { | |
23520 | return get_signatured_type (die, DW_SIGNATURE (attr), cu); | |
23521 | } | |
23522 | else | |
23523 | { | |
518817b3 SM |
23524 | struct dwarf2_per_objfile *dwarf2_per_objfile |
23525 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 23526 | |
b98664d3 | 23527 | complaint (_("Dwarf Error: DW_AT_signature has bad form %s in DIE" |
9d8780f0 SM |
23528 | " at %s [in module %s]"), |
23529 | dwarf_form_name (attr->form), sect_offset_str (die->sect_off), | |
4262abfb | 23530 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23531 | return build_error_marker_type (cu, die); |
23532 | } | |
348e048f DE |
23533 | } |
23534 | ||
e5fe5e75 | 23535 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
23536 | |
23537 | static void | |
e5fe5e75 | 23538 | load_full_type_unit (struct dwarf2_per_cu_data *per_cu) |
348e048f | 23539 | { |
52dc124a | 23540 | struct signatured_type *sig_type; |
348e048f | 23541 | |
f4dc4d17 DE |
23542 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
23543 | gdb_assert (! IS_TYPE_UNIT_GROUP (per_cu)); | |
23544 | ||
6721b2ec DE |
23545 | /* We have the per_cu, but we need the signatured_type. |
23546 | Fortunately this is an easy translation. */ | |
23547 | gdb_assert (per_cu->is_debug_types); | |
23548 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 23549 | |
6721b2ec | 23550 | gdb_assert (per_cu->cu == NULL); |
348e048f | 23551 | |
52dc124a | 23552 | read_signatured_type (sig_type); |
348e048f | 23553 | |
6721b2ec | 23554 | gdb_assert (per_cu->cu != NULL); |
348e048f DE |
23555 | } |
23556 | ||
dee91e82 DE |
23557 | /* die_reader_func for read_signatured_type. |
23558 | This is identical to load_full_comp_unit_reader, | |
23559 | but is kept separate for now. */ | |
348e048f DE |
23560 | |
23561 | static void | |
dee91e82 | 23562 | read_signatured_type_reader (const struct die_reader_specs *reader, |
d521ce57 | 23563 | const gdb_byte *info_ptr, |
dee91e82 DE |
23564 | struct die_info *comp_unit_die, |
23565 | int has_children, | |
23566 | void *data) | |
348e048f | 23567 | { |
dee91e82 | 23568 | struct dwarf2_cu *cu = reader->cu; |
348e048f | 23569 | |
dee91e82 DE |
23570 | gdb_assert (cu->die_hash == NULL); |
23571 | cu->die_hash = | |
23572 | htab_create_alloc_ex (cu->header.length / 12, | |
23573 | die_hash, | |
23574 | die_eq, | |
23575 | NULL, | |
23576 | &cu->comp_unit_obstack, | |
23577 | hashtab_obstack_allocate, | |
23578 | dummy_obstack_deallocate); | |
348e048f | 23579 | |
dee91e82 DE |
23580 | if (has_children) |
23581 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
23582 | &info_ptr, comp_unit_die); | |
23583 | cu->dies = comp_unit_die; | |
23584 | /* comp_unit_die is not stored in die_hash, no need. */ | |
348e048f DE |
23585 | |
23586 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 23587 | all CUs needed for references have been loaded yet, and symbol |
348e048f | 23588 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
23589 | or we won't be able to build types correctly. |
23590 | Similarly, if we do not read the producer, we can not apply | |
23591 | producer-specific interpretation. */ | |
95554aad | 23592 | prepare_one_comp_unit (cu, cu->dies, language_minimal); |
dee91e82 | 23593 | } |
348e048f | 23594 | |
3019eac3 DE |
23595 | /* Read in a signatured type and build its CU and DIEs. |
23596 | If the type is a stub for the real type in a DWO file, | |
23597 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
23598 | |
23599 | static void | |
23600 | read_signatured_type (struct signatured_type *sig_type) | |
23601 | { | |
23602 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 23603 | |
3019eac3 | 23604 | gdb_assert (per_cu->is_debug_types); |
dee91e82 | 23605 | gdb_assert (per_cu->cu == NULL); |
348e048f | 23606 | |
58f0c718 | 23607 | init_cutu_and_read_dies (per_cu, NULL, 0, 1, false, |
f4dc4d17 | 23608 | read_signatured_type_reader, NULL); |
7ee85ab1 | 23609 | sig_type->per_cu.tu_read = 1; |
c906108c SS |
23610 | } |
23611 | ||
c906108c SS |
23612 | /* Decode simple location descriptions. |
23613 | Given a pointer to a dwarf block that defines a location, compute | |
23614 | the location and return the value. | |
23615 | ||
4cecd739 DJ |
23616 | NOTE drow/2003-11-18: This function is called in two situations |
23617 | now: for the address of static or global variables (partial symbols | |
23618 | only) and for offsets into structures which are expected to be | |
23619 | (more or less) constant. The partial symbol case should go away, | |
23620 | and only the constant case should remain. That will let this | |
23621 | function complain more accurately. A few special modes are allowed | |
23622 | without complaint for global variables (for instance, global | |
23623 | register values and thread-local values). | |
c906108c SS |
23624 | |
23625 | A location description containing no operations indicates that the | |
4cecd739 | 23626 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
23627 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
23628 | callers will only want a very basic result and this can become a | |
21ae7a4d JK |
23629 | complaint. |
23630 | ||
23631 | Note that stack[0] is unused except as a default error return. */ | |
c906108c SS |
23632 | |
23633 | static CORE_ADDR | |
e7c27a73 | 23634 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 23635 | { |
518817b3 | 23636 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
56eb65bd SP |
23637 | size_t i; |
23638 | size_t size = blk->size; | |
d521ce57 | 23639 | const gdb_byte *data = blk->data; |
21ae7a4d JK |
23640 | CORE_ADDR stack[64]; |
23641 | int stacki; | |
23642 | unsigned int bytes_read, unsnd; | |
23643 | gdb_byte op; | |
c906108c | 23644 | |
21ae7a4d JK |
23645 | i = 0; |
23646 | stacki = 0; | |
23647 | stack[stacki] = 0; | |
23648 | stack[++stacki] = 0; | |
23649 | ||
23650 | while (i < size) | |
23651 | { | |
23652 | op = data[i++]; | |
23653 | switch (op) | |
23654 | { | |
23655 | case DW_OP_lit0: | |
23656 | case DW_OP_lit1: | |
23657 | case DW_OP_lit2: | |
23658 | case DW_OP_lit3: | |
23659 | case DW_OP_lit4: | |
23660 | case DW_OP_lit5: | |
23661 | case DW_OP_lit6: | |
23662 | case DW_OP_lit7: | |
23663 | case DW_OP_lit8: | |
23664 | case DW_OP_lit9: | |
23665 | case DW_OP_lit10: | |
23666 | case DW_OP_lit11: | |
23667 | case DW_OP_lit12: | |
23668 | case DW_OP_lit13: | |
23669 | case DW_OP_lit14: | |
23670 | case DW_OP_lit15: | |
23671 | case DW_OP_lit16: | |
23672 | case DW_OP_lit17: | |
23673 | case DW_OP_lit18: | |
23674 | case DW_OP_lit19: | |
23675 | case DW_OP_lit20: | |
23676 | case DW_OP_lit21: | |
23677 | case DW_OP_lit22: | |
23678 | case DW_OP_lit23: | |
23679 | case DW_OP_lit24: | |
23680 | case DW_OP_lit25: | |
23681 | case DW_OP_lit26: | |
23682 | case DW_OP_lit27: | |
23683 | case DW_OP_lit28: | |
23684 | case DW_OP_lit29: | |
23685 | case DW_OP_lit30: | |
23686 | case DW_OP_lit31: | |
23687 | stack[++stacki] = op - DW_OP_lit0; | |
23688 | break; | |
f1bea926 | 23689 | |
21ae7a4d JK |
23690 | case DW_OP_reg0: |
23691 | case DW_OP_reg1: | |
23692 | case DW_OP_reg2: | |
23693 | case DW_OP_reg3: | |
23694 | case DW_OP_reg4: | |
23695 | case DW_OP_reg5: | |
23696 | case DW_OP_reg6: | |
23697 | case DW_OP_reg7: | |
23698 | case DW_OP_reg8: | |
23699 | case DW_OP_reg9: | |
23700 | case DW_OP_reg10: | |
23701 | case DW_OP_reg11: | |
23702 | case DW_OP_reg12: | |
23703 | case DW_OP_reg13: | |
23704 | case DW_OP_reg14: | |
23705 | case DW_OP_reg15: | |
23706 | case DW_OP_reg16: | |
23707 | case DW_OP_reg17: | |
23708 | case DW_OP_reg18: | |
23709 | case DW_OP_reg19: | |
23710 | case DW_OP_reg20: | |
23711 | case DW_OP_reg21: | |
23712 | case DW_OP_reg22: | |
23713 | case DW_OP_reg23: | |
23714 | case DW_OP_reg24: | |
23715 | case DW_OP_reg25: | |
23716 | case DW_OP_reg26: | |
23717 | case DW_OP_reg27: | |
23718 | case DW_OP_reg28: | |
23719 | case DW_OP_reg29: | |
23720 | case DW_OP_reg30: | |
23721 | case DW_OP_reg31: | |
23722 | stack[++stacki] = op - DW_OP_reg0; | |
23723 | if (i < size) | |
23724 | dwarf2_complex_location_expr_complaint (); | |
23725 | break; | |
c906108c | 23726 | |
21ae7a4d JK |
23727 | case DW_OP_regx: |
23728 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
23729 | i += bytes_read; | |
23730 | stack[++stacki] = unsnd; | |
23731 | if (i < size) | |
23732 | dwarf2_complex_location_expr_complaint (); | |
23733 | break; | |
c906108c | 23734 | |
21ae7a4d JK |
23735 | case DW_OP_addr: |
23736 | stack[++stacki] = read_address (objfile->obfd, &data[i], | |
23737 | cu, &bytes_read); | |
23738 | i += bytes_read; | |
23739 | break; | |
d53d4ac5 | 23740 | |
21ae7a4d JK |
23741 | case DW_OP_const1u: |
23742 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
23743 | i += 1; | |
23744 | break; | |
23745 | ||
23746 | case DW_OP_const1s: | |
23747 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
23748 | i += 1; | |
23749 | break; | |
23750 | ||
23751 | case DW_OP_const2u: | |
23752 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
23753 | i += 2; | |
23754 | break; | |
23755 | ||
23756 | case DW_OP_const2s: | |
23757 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
23758 | i += 2; | |
23759 | break; | |
d53d4ac5 | 23760 | |
21ae7a4d JK |
23761 | case DW_OP_const4u: |
23762 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
23763 | i += 4; | |
23764 | break; | |
23765 | ||
23766 | case DW_OP_const4s: | |
23767 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
23768 | i += 4; | |
23769 | break; | |
23770 | ||
585861ea JK |
23771 | case DW_OP_const8u: |
23772 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
23773 | i += 8; | |
23774 | break; | |
23775 | ||
21ae7a4d JK |
23776 | case DW_OP_constu: |
23777 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
23778 | &bytes_read); | |
23779 | i += bytes_read; | |
23780 | break; | |
23781 | ||
23782 | case DW_OP_consts: | |
23783 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
23784 | i += bytes_read; | |
23785 | break; | |
23786 | ||
23787 | case DW_OP_dup: | |
23788 | stack[stacki + 1] = stack[stacki]; | |
23789 | stacki++; | |
23790 | break; | |
23791 | ||
23792 | case DW_OP_plus: | |
23793 | stack[stacki - 1] += stack[stacki]; | |
23794 | stacki--; | |
23795 | break; | |
23796 | ||
23797 | case DW_OP_plus_uconst: | |
23798 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
23799 | &bytes_read); | |
23800 | i += bytes_read; | |
23801 | break; | |
23802 | ||
23803 | case DW_OP_minus: | |
23804 | stack[stacki - 1] -= stack[stacki]; | |
23805 | stacki--; | |
23806 | break; | |
23807 | ||
23808 | case DW_OP_deref: | |
23809 | /* If we're not the last op, then we definitely can't encode | |
23810 | this using GDB's address_class enum. This is valid for partial | |
23811 | global symbols, although the variable's address will be bogus | |
23812 | in the psymtab. */ | |
23813 | if (i < size) | |
23814 | dwarf2_complex_location_expr_complaint (); | |
23815 | break; | |
23816 | ||
23817 | case DW_OP_GNU_push_tls_address: | |
4aa4e28b | 23818 | case DW_OP_form_tls_address: |
21ae7a4d JK |
23819 | /* The top of the stack has the offset from the beginning |
23820 | of the thread control block at which the variable is located. */ | |
23821 | /* Nothing should follow this operator, so the top of stack would | |
23822 | be returned. */ | |
23823 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
23824 | address will be bogus in the psymtab. Make it always at least |
23825 | non-zero to not look as a variable garbage collected by linker | |
23826 | which have DW_OP_addr 0. */ | |
21ae7a4d JK |
23827 | if (i < size) |
23828 | dwarf2_complex_location_expr_complaint (); | |
585861ea | 23829 | stack[stacki]++; |
21ae7a4d JK |
23830 | break; |
23831 | ||
23832 | case DW_OP_GNU_uninit: | |
23833 | break; | |
23834 | ||
3019eac3 | 23835 | case DW_OP_GNU_addr_index: |
49f6c839 | 23836 | case DW_OP_GNU_const_index: |
3019eac3 DE |
23837 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
23838 | &bytes_read); | |
23839 | i += bytes_read; | |
23840 | break; | |
23841 | ||
21ae7a4d JK |
23842 | default: |
23843 | { | |
f39c6ffd | 23844 | const char *name = get_DW_OP_name (op); |
21ae7a4d JK |
23845 | |
23846 | if (name) | |
b98664d3 | 23847 | complaint (_("unsupported stack op: '%s'"), |
21ae7a4d JK |
23848 | name); |
23849 | else | |
b98664d3 | 23850 | complaint (_("unsupported stack op: '%02x'"), |
21ae7a4d JK |
23851 | op); |
23852 | } | |
23853 | ||
23854 | return (stack[stacki]); | |
d53d4ac5 | 23855 | } |
3c6e0cb3 | 23856 | |
21ae7a4d JK |
23857 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
23858 | outside of the allocated space. Also enforce minimum>0. */ | |
23859 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
23860 | { | |
b98664d3 | 23861 | complaint (_("location description stack overflow")); |
21ae7a4d JK |
23862 | return 0; |
23863 | } | |
23864 | ||
23865 | if (stacki <= 0) | |
23866 | { | |
b98664d3 | 23867 | complaint (_("location description stack underflow")); |
21ae7a4d JK |
23868 | return 0; |
23869 | } | |
23870 | } | |
23871 | return (stack[stacki]); | |
c906108c SS |
23872 | } |
23873 | ||
23874 | /* memory allocation interface */ | |
23875 | ||
c906108c | 23876 | static struct dwarf_block * |
7b5a2f43 | 23877 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c | 23878 | { |
8d749320 | 23879 | return XOBNEW (&cu->comp_unit_obstack, struct dwarf_block); |
c906108c SS |
23880 | } |
23881 | ||
c906108c | 23882 | static struct die_info * |
b60c80d6 | 23883 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
23884 | { |
23885 | struct die_info *die; | |
b60c80d6 DJ |
23886 | size_t size = sizeof (struct die_info); |
23887 | ||
23888 | if (num_attrs > 1) | |
23889 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 23890 | |
b60c80d6 | 23891 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
23892 | memset (die, 0, sizeof (struct die_info)); |
23893 | return (die); | |
23894 | } | |
2e276125 JB |
23895 | |
23896 | \f | |
23897 | /* Macro support. */ | |
23898 | ||
233d95b5 JK |
23899 | /* Return file name relative to the compilation directory of file number I in |
23900 | *LH's file name table. The result is allocated using xmalloc; the caller is | |
2e276125 | 23901 | responsible for freeing it. */ |
233d95b5 | 23902 | |
2e276125 | 23903 | static char * |
233d95b5 | 23904 | file_file_name (int file, struct line_header *lh) |
2e276125 | 23905 | { |
6a83a1e6 EZ |
23906 | /* Is the file number a valid index into the line header's file name |
23907 | table? Remember that file numbers start with one, not zero. */ | |
fff8551c | 23908 | if (1 <= file && file <= lh->file_names.size ()) |
6a83a1e6 | 23909 | { |
8c43009f | 23910 | const file_entry &fe = lh->file_names[file - 1]; |
6e70227d | 23911 | |
8c43009f PA |
23912 | if (!IS_ABSOLUTE_PATH (fe.name)) |
23913 | { | |
23914 | const char *dir = fe.include_dir (lh); | |
23915 | if (dir != NULL) | |
23916 | return concat (dir, SLASH_STRING, fe.name, (char *) NULL); | |
23917 | } | |
23918 | return xstrdup (fe.name); | |
6a83a1e6 | 23919 | } |
2e276125 JB |
23920 | else |
23921 | { | |
6a83a1e6 EZ |
23922 | /* The compiler produced a bogus file number. We can at least |
23923 | record the macro definitions made in the file, even if we | |
23924 | won't be able to find the file by name. */ | |
23925 | char fake_name[80]; | |
9a619af0 | 23926 | |
8c042590 PM |
23927 | xsnprintf (fake_name, sizeof (fake_name), |
23928 | "<bad macro file number %d>", file); | |
2e276125 | 23929 | |
b98664d3 | 23930 | complaint (_("bad file number in macro information (%d)"), |
6a83a1e6 | 23931 | file); |
2e276125 | 23932 | |
6a83a1e6 | 23933 | return xstrdup (fake_name); |
2e276125 JB |
23934 | } |
23935 | } | |
23936 | ||
233d95b5 JK |
23937 | /* Return the full name of file number I in *LH's file name table. |
23938 | Use COMP_DIR as the name of the current directory of the | |
23939 | compilation. The result is allocated using xmalloc; the caller is | |
23940 | responsible for freeing it. */ | |
23941 | static char * | |
23942 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
23943 | { | |
23944 | /* Is the file number a valid index into the line header's file name | |
23945 | table? Remember that file numbers start with one, not zero. */ | |
fff8551c | 23946 | if (1 <= file && file <= lh->file_names.size ()) |
233d95b5 JK |
23947 | { |
23948 | char *relative = file_file_name (file, lh); | |
23949 | ||
23950 | if (IS_ABSOLUTE_PATH (relative) || comp_dir == NULL) | |
23951 | return relative; | |
b36cec19 PA |
23952 | return reconcat (relative, comp_dir, SLASH_STRING, |
23953 | relative, (char *) NULL); | |
233d95b5 JK |
23954 | } |
23955 | else | |
23956 | return file_file_name (file, lh); | |
23957 | } | |
23958 | ||
2e276125 JB |
23959 | |
23960 | static struct macro_source_file * | |
804d2729 TT |
23961 | macro_start_file (struct dwarf2_cu *cu, |
23962 | int file, int line, | |
2e276125 | 23963 | struct macro_source_file *current_file, |
43f3e411 | 23964 | struct line_header *lh) |
2e276125 | 23965 | { |
233d95b5 JK |
23966 | /* File name relative to the compilation directory of this source file. */ |
23967 | char *file_name = file_file_name (file, lh); | |
2e276125 | 23968 | |
2e276125 | 23969 | if (! current_file) |
abc9d0dc | 23970 | { |
fc474241 DE |
23971 | /* Note: We don't create a macro table for this compilation unit |
23972 | at all until we actually get a filename. */ | |
804d2729 | 23973 | struct macro_table *macro_table = cu->builder->get_macro_table (); |
fc474241 | 23974 | |
abc9d0dc TT |
23975 | /* If we have no current file, then this must be the start_file |
23976 | directive for the compilation unit's main source file. */ | |
fc474241 DE |
23977 | current_file = macro_set_main (macro_table, file_name); |
23978 | macro_define_special (macro_table); | |
abc9d0dc | 23979 | } |
2e276125 | 23980 | else |
233d95b5 | 23981 | current_file = macro_include (current_file, line, file_name); |
2e276125 | 23982 | |
233d95b5 | 23983 | xfree (file_name); |
6e70227d | 23984 | |
2e276125 JB |
23985 | return current_file; |
23986 | } | |
23987 | ||
2e276125 JB |
23988 | static const char * |
23989 | consume_improper_spaces (const char *p, const char *body) | |
23990 | { | |
23991 | if (*p == ' ') | |
23992 | { | |
b98664d3 | 23993 | complaint (_("macro definition contains spaces " |
3e43a32a | 23994 | "in formal argument list:\n`%s'"), |
4d3c2250 | 23995 | body); |
2e276125 JB |
23996 | |
23997 | while (*p == ' ') | |
23998 | p++; | |
23999 | } | |
24000 | ||
24001 | return p; | |
24002 | } | |
24003 | ||
24004 | ||
24005 | static void | |
24006 | parse_macro_definition (struct macro_source_file *file, int line, | |
24007 | const char *body) | |
24008 | { | |
24009 | const char *p; | |
24010 | ||
24011 | /* The body string takes one of two forms. For object-like macro | |
24012 | definitions, it should be: | |
24013 | ||
24014 | <macro name> " " <definition> | |
24015 | ||
24016 | For function-like macro definitions, it should be: | |
24017 | ||
24018 | <macro name> "() " <definition> | |
24019 | or | |
24020 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
24021 | ||
24022 | Spaces may appear only where explicitly indicated, and in the | |
24023 | <definition>. | |
24024 | ||
24025 | The Dwarf 2 spec says that an object-like macro's name is always | |
24026 | followed by a space, but versions of GCC around March 2002 omit | |
6e70227d | 24027 | the space when the macro's definition is the empty string. |
2e276125 JB |
24028 | |
24029 | The Dwarf 2 spec says that there should be no spaces between the | |
24030 | formal arguments in a function-like macro's formal argument list, | |
24031 | but versions of GCC around March 2002 include spaces after the | |
24032 | commas. */ | |
24033 | ||
24034 | ||
24035 | /* Find the extent of the macro name. The macro name is terminated | |
24036 | by either a space or null character (for an object-like macro) or | |
24037 | an opening paren (for a function-like macro). */ | |
24038 | for (p = body; *p; p++) | |
24039 | if (*p == ' ' || *p == '(') | |
24040 | break; | |
24041 | ||
24042 | if (*p == ' ' || *p == '\0') | |
24043 | { | |
24044 | /* It's an object-like macro. */ | |
24045 | int name_len = p - body; | |
3f8a7804 | 24046 | char *name = savestring (body, name_len); |
2e276125 JB |
24047 | const char *replacement; |
24048 | ||
24049 | if (*p == ' ') | |
24050 | replacement = body + name_len + 1; | |
24051 | else | |
24052 | { | |
4d3c2250 | 24053 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
24054 | replacement = body + name_len; |
24055 | } | |
6e70227d | 24056 | |
2e276125 JB |
24057 | macro_define_object (file, line, name, replacement); |
24058 | ||
24059 | xfree (name); | |
24060 | } | |
24061 | else if (*p == '(') | |
24062 | { | |
24063 | /* It's a function-like macro. */ | |
3f8a7804 | 24064 | char *name = savestring (body, p - body); |
2e276125 JB |
24065 | int argc = 0; |
24066 | int argv_size = 1; | |
8d749320 | 24067 | char **argv = XNEWVEC (char *, argv_size); |
2e276125 JB |
24068 | |
24069 | p++; | |
24070 | ||
24071 | p = consume_improper_spaces (p, body); | |
24072 | ||
24073 | /* Parse the formal argument list. */ | |
24074 | while (*p && *p != ')') | |
24075 | { | |
24076 | /* Find the extent of the current argument name. */ | |
24077 | const char *arg_start = p; | |
24078 | ||
24079 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
24080 | p++; | |
24081 | ||
24082 | if (! *p || p == arg_start) | |
4d3c2250 | 24083 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
24084 | else |
24085 | { | |
24086 | /* Make sure argv has room for the new argument. */ | |
24087 | if (argc >= argv_size) | |
24088 | { | |
24089 | argv_size *= 2; | |
224c3ddb | 24090 | argv = XRESIZEVEC (char *, argv, argv_size); |
2e276125 JB |
24091 | } |
24092 | ||
3f8a7804 | 24093 | argv[argc++] = savestring (arg_start, p - arg_start); |
2e276125 JB |
24094 | } |
24095 | ||
24096 | p = consume_improper_spaces (p, body); | |
24097 | ||
24098 | /* Consume the comma, if present. */ | |
24099 | if (*p == ',') | |
24100 | { | |
24101 | p++; | |
24102 | ||
24103 | p = consume_improper_spaces (p, body); | |
24104 | } | |
24105 | } | |
24106 | ||
24107 | if (*p == ')') | |
24108 | { | |
24109 | p++; | |
24110 | ||
24111 | if (*p == ' ') | |
24112 | /* Perfectly formed definition, no complaints. */ | |
24113 | macro_define_function (file, line, name, | |
6e70227d | 24114 | argc, (const char **) argv, |
2e276125 JB |
24115 | p + 1); |
24116 | else if (*p == '\0') | |
24117 | { | |
24118 | /* Complain, but do define it. */ | |
4d3c2250 | 24119 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 | 24120 | macro_define_function (file, line, name, |
6e70227d | 24121 | argc, (const char **) argv, |
2e276125 JB |
24122 | p); |
24123 | } | |
24124 | else | |
24125 | /* Just complain. */ | |
4d3c2250 | 24126 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
24127 | } |
24128 | else | |
24129 | /* Just complain. */ | |
4d3c2250 | 24130 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
24131 | |
24132 | xfree (name); | |
24133 | { | |
24134 | int i; | |
24135 | ||
24136 | for (i = 0; i < argc; i++) | |
24137 | xfree (argv[i]); | |
24138 | } | |
24139 | xfree (argv); | |
24140 | } | |
24141 | else | |
4d3c2250 | 24142 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
24143 | } |
24144 | ||
cf2c3c16 TT |
24145 | /* Skip some bytes from BYTES according to the form given in FORM. |
24146 | Returns the new pointer. */ | |
2e276125 | 24147 | |
d521ce57 TT |
24148 | static const gdb_byte * |
24149 | skip_form_bytes (bfd *abfd, const gdb_byte *bytes, const gdb_byte *buffer_end, | |
cf2c3c16 TT |
24150 | enum dwarf_form form, |
24151 | unsigned int offset_size, | |
24152 | struct dwarf2_section_info *section) | |
2e276125 | 24153 | { |
cf2c3c16 | 24154 | unsigned int bytes_read; |
2e276125 | 24155 | |
cf2c3c16 | 24156 | switch (form) |
2e276125 | 24157 | { |
cf2c3c16 TT |
24158 | case DW_FORM_data1: |
24159 | case DW_FORM_flag: | |
24160 | ++bytes; | |
24161 | break; | |
24162 | ||
24163 | case DW_FORM_data2: | |
24164 | bytes += 2; | |
24165 | break; | |
24166 | ||
24167 | case DW_FORM_data4: | |
24168 | bytes += 4; | |
24169 | break; | |
24170 | ||
24171 | case DW_FORM_data8: | |
24172 | bytes += 8; | |
24173 | break; | |
24174 | ||
0224619f JK |
24175 | case DW_FORM_data16: |
24176 | bytes += 16; | |
24177 | break; | |
24178 | ||
cf2c3c16 TT |
24179 | case DW_FORM_string: |
24180 | read_direct_string (abfd, bytes, &bytes_read); | |
24181 | bytes += bytes_read; | |
24182 | break; | |
24183 | ||
24184 | case DW_FORM_sec_offset: | |
24185 | case DW_FORM_strp: | |
36586728 | 24186 | case DW_FORM_GNU_strp_alt: |
cf2c3c16 TT |
24187 | bytes += offset_size; |
24188 | break; | |
24189 | ||
24190 | case DW_FORM_block: | |
24191 | bytes += read_unsigned_leb128 (abfd, bytes, &bytes_read); | |
24192 | bytes += bytes_read; | |
24193 | break; | |
24194 | ||
24195 | case DW_FORM_block1: | |
24196 | bytes += 1 + read_1_byte (abfd, bytes); | |
24197 | break; | |
24198 | case DW_FORM_block2: | |
24199 | bytes += 2 + read_2_bytes (abfd, bytes); | |
24200 | break; | |
24201 | case DW_FORM_block4: | |
24202 | bytes += 4 + read_4_bytes (abfd, bytes); | |
24203 | break; | |
24204 | ||
24205 | case DW_FORM_sdata: | |
24206 | case DW_FORM_udata: | |
3019eac3 DE |
24207 | case DW_FORM_GNU_addr_index: |
24208 | case DW_FORM_GNU_str_index: | |
d521ce57 | 24209 | bytes = gdb_skip_leb128 (bytes, buffer_end); |
f664829e DE |
24210 | if (bytes == NULL) |
24211 | { | |
24212 | dwarf2_section_buffer_overflow_complaint (section); | |
24213 | return NULL; | |
24214 | } | |
cf2c3c16 TT |
24215 | break; |
24216 | ||
663c44ac JK |
24217 | case DW_FORM_implicit_const: |
24218 | break; | |
24219 | ||
cf2c3c16 TT |
24220 | default: |
24221 | { | |
b98664d3 | 24222 | complaint (_("invalid form 0x%x in `%s'"), |
a32a8923 | 24223 | form, get_section_name (section)); |
cf2c3c16 TT |
24224 | return NULL; |
24225 | } | |
2e276125 JB |
24226 | } |
24227 | ||
cf2c3c16 TT |
24228 | return bytes; |
24229 | } | |
757a13d0 | 24230 | |
cf2c3c16 TT |
24231 | /* A helper for dwarf_decode_macros that handles skipping an unknown |
24232 | opcode. Returns an updated pointer to the macro data buffer; or, | |
24233 | on error, issues a complaint and returns NULL. */ | |
757a13d0 | 24234 | |
d521ce57 | 24235 | static const gdb_byte * |
cf2c3c16 | 24236 | skip_unknown_opcode (unsigned int opcode, |
d521ce57 TT |
24237 | const gdb_byte **opcode_definitions, |
24238 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, | |
cf2c3c16 TT |
24239 | bfd *abfd, |
24240 | unsigned int offset_size, | |
24241 | struct dwarf2_section_info *section) | |
24242 | { | |
24243 | unsigned int bytes_read, i; | |
24244 | unsigned long arg; | |
d521ce57 | 24245 | const gdb_byte *defn; |
2e276125 | 24246 | |
cf2c3c16 | 24247 | if (opcode_definitions[opcode] == NULL) |
2e276125 | 24248 | { |
b98664d3 | 24249 | complaint (_("unrecognized DW_MACFINO opcode 0x%x"), |
cf2c3c16 TT |
24250 | opcode); |
24251 | return NULL; | |
24252 | } | |
2e276125 | 24253 | |
cf2c3c16 TT |
24254 | defn = opcode_definitions[opcode]; |
24255 | arg = read_unsigned_leb128 (abfd, defn, &bytes_read); | |
24256 | defn += bytes_read; | |
2e276125 | 24257 | |
cf2c3c16 TT |
24258 | for (i = 0; i < arg; ++i) |
24259 | { | |
aead7601 SM |
24260 | mac_ptr = skip_form_bytes (abfd, mac_ptr, mac_end, |
24261 | (enum dwarf_form) defn[i], offset_size, | |
f664829e | 24262 | section); |
cf2c3c16 TT |
24263 | if (mac_ptr == NULL) |
24264 | { | |
24265 | /* skip_form_bytes already issued the complaint. */ | |
24266 | return NULL; | |
24267 | } | |
24268 | } | |
757a13d0 | 24269 | |
cf2c3c16 TT |
24270 | return mac_ptr; |
24271 | } | |
757a13d0 | 24272 | |
cf2c3c16 TT |
24273 | /* A helper function which parses the header of a macro section. |
24274 | If the macro section is the extended (for now called "GNU") type, | |
24275 | then this updates *OFFSET_SIZE. Returns a pointer to just after | |
24276 | the header, or issues a complaint and returns NULL on error. */ | |
757a13d0 | 24277 | |
d521ce57 TT |
24278 | static const gdb_byte * |
24279 | dwarf_parse_macro_header (const gdb_byte **opcode_definitions, | |
cf2c3c16 | 24280 | bfd *abfd, |
d521ce57 | 24281 | const gdb_byte *mac_ptr, |
cf2c3c16 TT |
24282 | unsigned int *offset_size, |
24283 | int section_is_gnu) | |
24284 | { | |
24285 | memset (opcode_definitions, 0, 256 * sizeof (gdb_byte *)); | |
757a13d0 | 24286 | |
cf2c3c16 TT |
24287 | if (section_is_gnu) |
24288 | { | |
24289 | unsigned int version, flags; | |
757a13d0 | 24290 | |
cf2c3c16 | 24291 | version = read_2_bytes (abfd, mac_ptr); |
0af92d60 | 24292 | if (version != 4 && version != 5) |
cf2c3c16 | 24293 | { |
b98664d3 | 24294 | complaint (_("unrecognized version `%d' in .debug_macro section"), |
cf2c3c16 TT |
24295 | version); |
24296 | return NULL; | |
24297 | } | |
24298 | mac_ptr += 2; | |
757a13d0 | 24299 | |
cf2c3c16 TT |
24300 | flags = read_1_byte (abfd, mac_ptr); |
24301 | ++mac_ptr; | |
24302 | *offset_size = (flags & 1) ? 8 : 4; | |
757a13d0 | 24303 | |
cf2c3c16 TT |
24304 | if ((flags & 2) != 0) |
24305 | /* We don't need the line table offset. */ | |
24306 | mac_ptr += *offset_size; | |
757a13d0 | 24307 | |
cf2c3c16 TT |
24308 | /* Vendor opcode descriptions. */ |
24309 | if ((flags & 4) != 0) | |
24310 | { | |
24311 | unsigned int i, count; | |
757a13d0 | 24312 | |
cf2c3c16 TT |
24313 | count = read_1_byte (abfd, mac_ptr); |
24314 | ++mac_ptr; | |
24315 | for (i = 0; i < count; ++i) | |
24316 | { | |
24317 | unsigned int opcode, bytes_read; | |
24318 | unsigned long arg; | |
24319 | ||
24320 | opcode = read_1_byte (abfd, mac_ptr); | |
24321 | ++mac_ptr; | |
24322 | opcode_definitions[opcode] = mac_ptr; | |
24323 | arg = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24324 | mac_ptr += bytes_read; | |
24325 | mac_ptr += arg; | |
24326 | } | |
757a13d0 | 24327 | } |
cf2c3c16 | 24328 | } |
757a13d0 | 24329 | |
cf2c3c16 TT |
24330 | return mac_ptr; |
24331 | } | |
757a13d0 | 24332 | |
cf2c3c16 | 24333 | /* A helper for dwarf_decode_macros that handles the GNU extensions, |
0af92d60 | 24334 | including DW_MACRO_import. */ |
cf2c3c16 TT |
24335 | |
24336 | static void | |
804d2729 | 24337 | dwarf_decode_macro_bytes (struct dwarf2_cu *cu, |
ed2dc618 | 24338 | bfd *abfd, |
d521ce57 | 24339 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, |
cf2c3c16 | 24340 | struct macro_source_file *current_file, |
43f3e411 | 24341 | struct line_header *lh, |
cf2c3c16 | 24342 | struct dwarf2_section_info *section, |
36586728 | 24343 | int section_is_gnu, int section_is_dwz, |
cf2c3c16 | 24344 | unsigned int offset_size, |
8fc3fc34 | 24345 | htab_t include_hash) |
cf2c3c16 | 24346 | { |
804d2729 TT |
24347 | struct dwarf2_per_objfile *dwarf2_per_objfile |
24348 | = cu->per_cu->dwarf2_per_objfile; | |
4d663531 | 24349 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
cf2c3c16 TT |
24350 | enum dwarf_macro_record_type macinfo_type; |
24351 | int at_commandline; | |
d521ce57 | 24352 | const gdb_byte *opcode_definitions[256]; |
757a13d0 | 24353 | |
cf2c3c16 TT |
24354 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, |
24355 | &offset_size, section_is_gnu); | |
24356 | if (mac_ptr == NULL) | |
24357 | { | |
24358 | /* We already issued a complaint. */ | |
24359 | return; | |
24360 | } | |
757a13d0 JK |
24361 | |
24362 | /* Determines if GDB is still before first DW_MACINFO_start_file. If true | |
24363 | GDB is still reading the definitions from command line. First | |
24364 | DW_MACINFO_start_file will need to be ignored as it was already executed | |
24365 | to create CURRENT_FILE for the main source holding also the command line | |
24366 | definitions. On first met DW_MACINFO_start_file this flag is reset to | |
24367 | normally execute all the remaining DW_MACINFO_start_file macinfos. */ | |
24368 | ||
24369 | at_commandline = 1; | |
24370 | ||
24371 | do | |
24372 | { | |
24373 | /* Do we at least have room for a macinfo type byte? */ | |
24374 | if (mac_ptr >= mac_end) | |
24375 | { | |
f664829e | 24376 | dwarf2_section_buffer_overflow_complaint (section); |
757a13d0 JK |
24377 | break; |
24378 | } | |
24379 | ||
aead7601 | 24380 | macinfo_type = (enum dwarf_macro_record_type) read_1_byte (abfd, mac_ptr); |
757a13d0 JK |
24381 | mac_ptr++; |
24382 | ||
cf2c3c16 TT |
24383 | /* Note that we rely on the fact that the corresponding GNU and |
24384 | DWARF constants are the same. */ | |
132448f8 SM |
24385 | DIAGNOSTIC_PUSH |
24386 | DIAGNOSTIC_IGNORE_SWITCH_DIFFERENT_ENUM_TYPES | |
757a13d0 JK |
24387 | switch (macinfo_type) |
24388 | { | |
24389 | /* A zero macinfo type indicates the end of the macro | |
24390 | information. */ | |
24391 | case 0: | |
24392 | break; | |
2e276125 | 24393 | |
0af92d60 JK |
24394 | case DW_MACRO_define: |
24395 | case DW_MACRO_undef: | |
24396 | case DW_MACRO_define_strp: | |
24397 | case DW_MACRO_undef_strp: | |
24398 | case DW_MACRO_define_sup: | |
24399 | case DW_MACRO_undef_sup: | |
2e276125 | 24400 | { |
891d2f0b | 24401 | unsigned int bytes_read; |
2e276125 | 24402 | int line; |
d521ce57 | 24403 | const char *body; |
cf2c3c16 | 24404 | int is_define; |
2e276125 | 24405 | |
cf2c3c16 TT |
24406 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
24407 | mac_ptr += bytes_read; | |
24408 | ||
0af92d60 JK |
24409 | if (macinfo_type == DW_MACRO_define |
24410 | || macinfo_type == DW_MACRO_undef) | |
cf2c3c16 TT |
24411 | { |
24412 | body = read_direct_string (abfd, mac_ptr, &bytes_read); | |
24413 | mac_ptr += bytes_read; | |
24414 | } | |
24415 | else | |
24416 | { | |
24417 | LONGEST str_offset; | |
24418 | ||
24419 | str_offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
24420 | mac_ptr += offset_size; | |
2e276125 | 24421 | |
0af92d60 JK |
24422 | if (macinfo_type == DW_MACRO_define_sup |
24423 | || macinfo_type == DW_MACRO_undef_sup | |
f7a35f02 | 24424 | || section_is_dwz) |
36586728 | 24425 | { |
ed2dc618 SM |
24426 | struct dwz_file *dwz |
24427 | = dwarf2_get_dwz_file (dwarf2_per_objfile); | |
36586728 | 24428 | |
ed2dc618 SM |
24429 | body = read_indirect_string_from_dwz (objfile, |
24430 | dwz, str_offset); | |
36586728 TT |
24431 | } |
24432 | else | |
ed2dc618 SM |
24433 | body = read_indirect_string_at_offset (dwarf2_per_objfile, |
24434 | abfd, str_offset); | |
cf2c3c16 TT |
24435 | } |
24436 | ||
0af92d60 JK |
24437 | is_define = (macinfo_type == DW_MACRO_define |
24438 | || macinfo_type == DW_MACRO_define_strp | |
24439 | || macinfo_type == DW_MACRO_define_sup); | |
2e276125 | 24440 | if (! current_file) |
757a13d0 JK |
24441 | { |
24442 | /* DWARF violation as no main source is present. */ | |
b98664d3 | 24443 | complaint (_("debug info with no main source gives macro %s " |
757a13d0 | 24444 | "on line %d: %s"), |
cf2c3c16 TT |
24445 | is_define ? _("definition") : _("undefinition"), |
24446 | line, body); | |
757a13d0 JK |
24447 | break; |
24448 | } | |
3e43a32a MS |
24449 | if ((line == 0 && !at_commandline) |
24450 | || (line != 0 && at_commandline)) | |
b98664d3 | 24451 | complaint (_("debug info gives %s macro %s with %s line %d: %s"), |
757a13d0 | 24452 | at_commandline ? _("command-line") : _("in-file"), |
cf2c3c16 | 24453 | is_define ? _("definition") : _("undefinition"), |
757a13d0 JK |
24454 | line == 0 ? _("zero") : _("non-zero"), line, body); |
24455 | ||
cf2c3c16 | 24456 | if (is_define) |
757a13d0 | 24457 | parse_macro_definition (current_file, line, body); |
cf2c3c16 TT |
24458 | else |
24459 | { | |
0af92d60 JK |
24460 | gdb_assert (macinfo_type == DW_MACRO_undef |
24461 | || macinfo_type == DW_MACRO_undef_strp | |
24462 | || macinfo_type == DW_MACRO_undef_sup); | |
cf2c3c16 TT |
24463 | macro_undef (current_file, line, body); |
24464 | } | |
2e276125 JB |
24465 | } |
24466 | break; | |
24467 | ||
0af92d60 | 24468 | case DW_MACRO_start_file: |
2e276125 | 24469 | { |
891d2f0b | 24470 | unsigned int bytes_read; |
2e276125 JB |
24471 | int line, file; |
24472 | ||
24473 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24474 | mac_ptr += bytes_read; | |
24475 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24476 | mac_ptr += bytes_read; | |
24477 | ||
3e43a32a MS |
24478 | if ((line == 0 && !at_commandline) |
24479 | || (line != 0 && at_commandline)) | |
b98664d3 | 24480 | complaint (_("debug info gives source %d included " |
757a13d0 JK |
24481 | "from %s at %s line %d"), |
24482 | file, at_commandline ? _("command-line") : _("file"), | |
24483 | line == 0 ? _("zero") : _("non-zero"), line); | |
24484 | ||
24485 | if (at_commandline) | |
24486 | { | |
0af92d60 | 24487 | /* This DW_MACRO_start_file was executed in the |
cf2c3c16 | 24488 | pass one. */ |
757a13d0 JK |
24489 | at_commandline = 0; |
24490 | } | |
24491 | else | |
804d2729 TT |
24492 | current_file = macro_start_file (cu, file, line, current_file, |
24493 | lh); | |
2e276125 JB |
24494 | } |
24495 | break; | |
24496 | ||
0af92d60 | 24497 | case DW_MACRO_end_file: |
2e276125 | 24498 | if (! current_file) |
b98664d3 | 24499 | complaint (_("macro debug info has an unmatched " |
3e43a32a | 24500 | "`close_file' directive")); |
2e276125 JB |
24501 | else |
24502 | { | |
24503 | current_file = current_file->included_by; | |
24504 | if (! current_file) | |
24505 | { | |
cf2c3c16 | 24506 | enum dwarf_macro_record_type next_type; |
2e276125 JB |
24507 | |
24508 | /* GCC circa March 2002 doesn't produce the zero | |
24509 | type byte marking the end of the compilation | |
24510 | unit. Complain if it's not there, but exit no | |
24511 | matter what. */ | |
24512 | ||
24513 | /* Do we at least have room for a macinfo type byte? */ | |
24514 | if (mac_ptr >= mac_end) | |
24515 | { | |
f664829e | 24516 | dwarf2_section_buffer_overflow_complaint (section); |
2e276125 JB |
24517 | return; |
24518 | } | |
24519 | ||
24520 | /* We don't increment mac_ptr here, so this is just | |
24521 | a look-ahead. */ | |
aead7601 SM |
24522 | next_type |
24523 | = (enum dwarf_macro_record_type) read_1_byte (abfd, | |
24524 | mac_ptr); | |
2e276125 | 24525 | if (next_type != 0) |
b98664d3 | 24526 | complaint (_("no terminating 0-type entry for " |
3e43a32a | 24527 | "macros in `.debug_macinfo' section")); |
2e276125 JB |
24528 | |
24529 | return; | |
24530 | } | |
24531 | } | |
24532 | break; | |
24533 | ||
0af92d60 JK |
24534 | case DW_MACRO_import: |
24535 | case DW_MACRO_import_sup: | |
cf2c3c16 TT |
24536 | { |
24537 | LONGEST offset; | |
8fc3fc34 | 24538 | void **slot; |
a036ba48 TT |
24539 | bfd *include_bfd = abfd; |
24540 | struct dwarf2_section_info *include_section = section; | |
d521ce57 | 24541 | const gdb_byte *include_mac_end = mac_end; |
a036ba48 | 24542 | int is_dwz = section_is_dwz; |
d521ce57 | 24543 | const gdb_byte *new_mac_ptr; |
cf2c3c16 TT |
24544 | |
24545 | offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
24546 | mac_ptr += offset_size; | |
24547 | ||
0af92d60 | 24548 | if (macinfo_type == DW_MACRO_import_sup) |
a036ba48 | 24549 | { |
ed2dc618 | 24550 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
a036ba48 | 24551 | |
4d663531 | 24552 | dwarf2_read_section (objfile, &dwz->macro); |
a036ba48 | 24553 | |
a036ba48 | 24554 | include_section = &dwz->macro; |
a32a8923 | 24555 | include_bfd = get_section_bfd_owner (include_section); |
a036ba48 TT |
24556 | include_mac_end = dwz->macro.buffer + dwz->macro.size; |
24557 | is_dwz = 1; | |
24558 | } | |
24559 | ||
24560 | new_mac_ptr = include_section->buffer + offset; | |
24561 | slot = htab_find_slot (include_hash, new_mac_ptr, INSERT); | |
24562 | ||
8fc3fc34 TT |
24563 | if (*slot != NULL) |
24564 | { | |
24565 | /* This has actually happened; see | |
24566 | http://sourceware.org/bugzilla/show_bug.cgi?id=13568. */ | |
b98664d3 | 24567 | complaint (_("recursive DW_MACRO_import in " |
8fc3fc34 TT |
24568 | ".debug_macro section")); |
24569 | } | |
24570 | else | |
24571 | { | |
d521ce57 | 24572 | *slot = (void *) new_mac_ptr; |
36586728 | 24573 | |
804d2729 | 24574 | dwarf_decode_macro_bytes (cu, include_bfd, new_mac_ptr, |
43f3e411 | 24575 | include_mac_end, current_file, lh, |
36586728 | 24576 | section, section_is_gnu, is_dwz, |
4d663531 | 24577 | offset_size, include_hash); |
8fc3fc34 | 24578 | |
d521ce57 | 24579 | htab_remove_elt (include_hash, (void *) new_mac_ptr); |
8fc3fc34 | 24580 | } |
cf2c3c16 TT |
24581 | } |
24582 | break; | |
24583 | ||
2e276125 | 24584 | case DW_MACINFO_vendor_ext: |
cf2c3c16 TT |
24585 | if (!section_is_gnu) |
24586 | { | |
24587 | unsigned int bytes_read; | |
2e276125 | 24588 | |
ac298888 TT |
24589 | /* This reads the constant, but since we don't recognize |
24590 | any vendor extensions, we ignore it. */ | |
24591 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
cf2c3c16 TT |
24592 | mac_ptr += bytes_read; |
24593 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
24594 | mac_ptr += bytes_read; | |
2e276125 | 24595 | |
cf2c3c16 TT |
24596 | /* We don't recognize any vendor extensions. */ |
24597 | break; | |
24598 | } | |
24599 | /* FALLTHROUGH */ | |
24600 | ||
24601 | default: | |
24602 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 24603 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
24604 | section); |
24605 | if (mac_ptr == NULL) | |
24606 | return; | |
24607 | break; | |
2e276125 | 24608 | } |
132448f8 | 24609 | DIAGNOSTIC_POP |
757a13d0 | 24610 | } while (macinfo_type != 0); |
2e276125 | 24611 | } |
8e19ed76 | 24612 | |
cf2c3c16 | 24613 | static void |
09262596 | 24614 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, |
43f3e411 | 24615 | int section_is_gnu) |
cf2c3c16 | 24616 | { |
518817b3 SM |
24617 | struct dwarf2_per_objfile *dwarf2_per_objfile |
24618 | = cu->per_cu->dwarf2_per_objfile; | |
bb5ed363 | 24619 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
09262596 DE |
24620 | struct line_header *lh = cu->line_header; |
24621 | bfd *abfd; | |
d521ce57 | 24622 | const gdb_byte *mac_ptr, *mac_end; |
cf2c3c16 TT |
24623 | struct macro_source_file *current_file = 0; |
24624 | enum dwarf_macro_record_type macinfo_type; | |
24625 | unsigned int offset_size = cu->header.offset_size; | |
d521ce57 | 24626 | const gdb_byte *opcode_definitions[256]; |
8fc3fc34 | 24627 | void **slot; |
09262596 DE |
24628 | struct dwarf2_section_info *section; |
24629 | const char *section_name; | |
24630 | ||
24631 | if (cu->dwo_unit != NULL) | |
24632 | { | |
24633 | if (section_is_gnu) | |
24634 | { | |
24635 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
24636 | section_name = ".debug_macro.dwo"; | |
24637 | } | |
24638 | else | |
24639 | { | |
24640 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
24641 | section_name = ".debug_macinfo.dwo"; | |
24642 | } | |
24643 | } | |
24644 | else | |
24645 | { | |
24646 | if (section_is_gnu) | |
24647 | { | |
24648 | section = &dwarf2_per_objfile->macro; | |
24649 | section_name = ".debug_macro"; | |
24650 | } | |
24651 | else | |
24652 | { | |
24653 | section = &dwarf2_per_objfile->macinfo; | |
24654 | section_name = ".debug_macinfo"; | |
24655 | } | |
24656 | } | |
cf2c3c16 | 24657 | |
bb5ed363 | 24658 | dwarf2_read_section (objfile, section); |
cf2c3c16 TT |
24659 | if (section->buffer == NULL) |
24660 | { | |
b98664d3 | 24661 | complaint (_("missing %s section"), section_name); |
cf2c3c16 TT |
24662 | return; |
24663 | } | |
a32a8923 | 24664 | abfd = get_section_bfd_owner (section); |
cf2c3c16 TT |
24665 | |
24666 | /* First pass: Find the name of the base filename. | |
24667 | This filename is needed in order to process all macros whose definition | |
24668 | (or undefinition) comes from the command line. These macros are defined | |
24669 | before the first DW_MACINFO_start_file entry, and yet still need to be | |
24670 | associated to the base file. | |
24671 | ||
24672 | To determine the base file name, we scan the macro definitions until we | |
24673 | reach the first DW_MACINFO_start_file entry. We then initialize | |
24674 | CURRENT_FILE accordingly so that any macro definition found before the | |
24675 | first DW_MACINFO_start_file can still be associated to the base file. */ | |
24676 | ||
24677 | mac_ptr = section->buffer + offset; | |
24678 | mac_end = section->buffer + section->size; | |
24679 | ||
24680 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, | |
24681 | &offset_size, section_is_gnu); | |
24682 | if (mac_ptr == NULL) | |
24683 | { | |
24684 | /* We already issued a complaint. */ | |
24685 | return; | |
24686 | } | |
24687 | ||
24688 | do | |
24689 | { | |
24690 | /* Do we at least have room for a macinfo type byte? */ | |
24691 | if (mac_ptr >= mac_end) | |
24692 | { | |
24693 | /* Complaint is printed during the second pass as GDB will probably | |
24694 | stop the first pass earlier upon finding | |
24695 | DW_MACINFO_start_file. */ | |
24696 | break; | |
24697 | } | |
24698 | ||
aead7601 | 24699 | macinfo_type = (enum dwarf_macro_record_type) read_1_byte (abfd, mac_ptr); |
cf2c3c16 TT |
24700 | mac_ptr++; |
24701 | ||
24702 | /* Note that we rely on the fact that the corresponding GNU and | |
24703 | DWARF constants are the same. */ | |
132448f8 SM |
24704 | DIAGNOSTIC_PUSH |
24705 | DIAGNOSTIC_IGNORE_SWITCH_DIFFERENT_ENUM_TYPES | |
cf2c3c16 TT |
24706 | switch (macinfo_type) |
24707 | { | |
24708 | /* A zero macinfo type indicates the end of the macro | |
24709 | information. */ | |
24710 | case 0: | |
24711 | break; | |
24712 | ||
0af92d60 JK |
24713 | case DW_MACRO_define: |
24714 | case DW_MACRO_undef: | |
cf2c3c16 TT |
24715 | /* Only skip the data by MAC_PTR. */ |
24716 | { | |
24717 | unsigned int bytes_read; | |
24718 | ||
24719 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24720 | mac_ptr += bytes_read; | |
24721 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
24722 | mac_ptr += bytes_read; | |
24723 | } | |
24724 | break; | |
24725 | ||
0af92d60 | 24726 | case DW_MACRO_start_file: |
cf2c3c16 TT |
24727 | { |
24728 | unsigned int bytes_read; | |
24729 | int line, file; | |
24730 | ||
24731 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24732 | mac_ptr += bytes_read; | |
24733 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24734 | mac_ptr += bytes_read; | |
24735 | ||
804d2729 | 24736 | current_file = macro_start_file (cu, file, line, current_file, lh); |
cf2c3c16 TT |
24737 | } |
24738 | break; | |
24739 | ||
0af92d60 | 24740 | case DW_MACRO_end_file: |
cf2c3c16 TT |
24741 | /* No data to skip by MAC_PTR. */ |
24742 | break; | |
24743 | ||
0af92d60 JK |
24744 | case DW_MACRO_define_strp: |
24745 | case DW_MACRO_undef_strp: | |
24746 | case DW_MACRO_define_sup: | |
24747 | case DW_MACRO_undef_sup: | |
cf2c3c16 TT |
24748 | { |
24749 | unsigned int bytes_read; | |
24750 | ||
24751 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24752 | mac_ptr += bytes_read; | |
24753 | mac_ptr += offset_size; | |
24754 | } | |
24755 | break; | |
24756 | ||
0af92d60 JK |
24757 | case DW_MACRO_import: |
24758 | case DW_MACRO_import_sup: | |
cf2c3c16 | 24759 | /* Note that, according to the spec, a transparent include |
0af92d60 | 24760 | chain cannot call DW_MACRO_start_file. So, we can just |
cf2c3c16 TT |
24761 | skip this opcode. */ |
24762 | mac_ptr += offset_size; | |
24763 | break; | |
24764 | ||
24765 | case DW_MACINFO_vendor_ext: | |
24766 | /* Only skip the data by MAC_PTR. */ | |
24767 | if (!section_is_gnu) | |
24768 | { | |
24769 | unsigned int bytes_read; | |
24770 | ||
24771 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24772 | mac_ptr += bytes_read; | |
24773 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
24774 | mac_ptr += bytes_read; | |
24775 | } | |
24776 | /* FALLTHROUGH */ | |
24777 | ||
24778 | default: | |
24779 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 24780 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
24781 | section); |
24782 | if (mac_ptr == NULL) | |
24783 | return; | |
24784 | break; | |
24785 | } | |
132448f8 | 24786 | DIAGNOSTIC_POP |
cf2c3c16 TT |
24787 | } while (macinfo_type != 0 && current_file == NULL); |
24788 | ||
24789 | /* Second pass: Process all entries. | |
24790 | ||
24791 | Use the AT_COMMAND_LINE flag to determine whether we are still processing | |
24792 | command-line macro definitions/undefinitions. This flag is unset when we | |
24793 | reach the first DW_MACINFO_start_file entry. */ | |
24794 | ||
fc4007c9 TT |
24795 | htab_up include_hash (htab_create_alloc (1, htab_hash_pointer, |
24796 | htab_eq_pointer, | |
24797 | NULL, xcalloc, xfree)); | |
8fc3fc34 | 24798 | mac_ptr = section->buffer + offset; |
fc4007c9 | 24799 | slot = htab_find_slot (include_hash.get (), mac_ptr, INSERT); |
d521ce57 | 24800 | *slot = (void *) mac_ptr; |
804d2729 | 24801 | dwarf_decode_macro_bytes (cu, abfd, mac_ptr, mac_end, |
43f3e411 | 24802 | current_file, lh, section, |
fc4007c9 TT |
24803 | section_is_gnu, 0, offset_size, |
24804 | include_hash.get ()); | |
cf2c3c16 TT |
24805 | } |
24806 | ||
8e19ed76 | 24807 | /* Check if the attribute's form is a DW_FORM_block* |
0963b4bd | 24808 | if so return true else false. */ |
380bca97 | 24809 | |
8e19ed76 | 24810 | static int |
6e5a29e1 | 24811 | attr_form_is_block (const struct attribute *attr) |
8e19ed76 PS |
24812 | { |
24813 | return (attr == NULL ? 0 : | |
24814 | attr->form == DW_FORM_block1 | |
24815 | || attr->form == DW_FORM_block2 | |
24816 | || attr->form == DW_FORM_block4 | |
2dc7f7b3 TT |
24817 | || attr->form == DW_FORM_block |
24818 | || attr->form == DW_FORM_exprloc); | |
8e19ed76 | 24819 | } |
4c2df51b | 24820 | |
c6a0999f JB |
24821 | /* Return non-zero if ATTR's value is a section offset --- classes |
24822 | lineptr, loclistptr, macptr or rangelistptr --- or zero, otherwise. | |
24823 | You may use DW_UNSND (attr) to retrieve such offsets. | |
24824 | ||
24825 | Section 7.5.4, "Attribute Encodings", explains that no attribute | |
24826 | may have a value that belongs to more than one of these classes; it | |
24827 | would be ambiguous if we did, because we use the same forms for all | |
24828 | of them. */ | |
380bca97 | 24829 | |
3690dd37 | 24830 | static int |
6e5a29e1 | 24831 | attr_form_is_section_offset (const struct attribute *attr) |
3690dd37 JB |
24832 | { |
24833 | return (attr->form == DW_FORM_data4 | |
2dc7f7b3 TT |
24834 | || attr->form == DW_FORM_data8 |
24835 | || attr->form == DW_FORM_sec_offset); | |
3690dd37 JB |
24836 | } |
24837 | ||
3690dd37 JB |
24838 | /* Return non-zero if ATTR's value falls in the 'constant' class, or |
24839 | zero otherwise. When this function returns true, you can apply | |
24840 | dwarf2_get_attr_constant_value to it. | |
24841 | ||
24842 | However, note that for some attributes you must check | |
24843 | attr_form_is_section_offset before using this test. DW_FORM_data4 | |
24844 | and DW_FORM_data8 are members of both the constant class, and of | |
24845 | the classes that contain offsets into other debug sections | |
24846 | (lineptr, loclistptr, macptr or rangelistptr). The DWARF spec says | |
24847 | that, if an attribute's can be either a constant or one of the | |
24848 | section offset classes, DW_FORM_data4 and DW_FORM_data8 should be | |
0224619f JK |
24849 | taken as section offsets, not constants. |
24850 | ||
24851 | DW_FORM_data16 is not considered as dwarf2_get_attr_constant_value | |
24852 | cannot handle that. */ | |
380bca97 | 24853 | |
3690dd37 | 24854 | static int |
6e5a29e1 | 24855 | attr_form_is_constant (const struct attribute *attr) |
3690dd37 JB |
24856 | { |
24857 | switch (attr->form) | |
24858 | { | |
24859 | case DW_FORM_sdata: | |
24860 | case DW_FORM_udata: | |
24861 | case DW_FORM_data1: | |
24862 | case DW_FORM_data2: | |
24863 | case DW_FORM_data4: | |
24864 | case DW_FORM_data8: | |
663c44ac | 24865 | case DW_FORM_implicit_const: |
3690dd37 JB |
24866 | return 1; |
24867 | default: | |
24868 | return 0; | |
24869 | } | |
24870 | } | |
24871 | ||
7771576e SA |
24872 | |
24873 | /* DW_ADDR is always stored already as sect_offset; despite for the forms | |
24874 | besides DW_FORM_ref_addr it is stored as cu_offset in the DWARF file. */ | |
24875 | ||
24876 | static int | |
6e5a29e1 | 24877 | attr_form_is_ref (const struct attribute *attr) |
7771576e SA |
24878 | { |
24879 | switch (attr->form) | |
24880 | { | |
24881 | case DW_FORM_ref_addr: | |
24882 | case DW_FORM_ref1: | |
24883 | case DW_FORM_ref2: | |
24884 | case DW_FORM_ref4: | |
24885 | case DW_FORM_ref8: | |
24886 | case DW_FORM_ref_udata: | |
24887 | case DW_FORM_GNU_ref_alt: | |
24888 | return 1; | |
24889 | default: | |
24890 | return 0; | |
24891 | } | |
24892 | } | |
24893 | ||
3019eac3 DE |
24894 | /* Return the .debug_loc section to use for CU. |
24895 | For DWO files use .debug_loc.dwo. */ | |
24896 | ||
24897 | static struct dwarf2_section_info * | |
24898 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
24899 | { | |
518817b3 SM |
24900 | struct dwarf2_per_objfile *dwarf2_per_objfile |
24901 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 24902 | |
3019eac3 | 24903 | if (cu->dwo_unit) |
43988095 JK |
24904 | { |
24905 | struct dwo_sections *sections = &cu->dwo_unit->dwo_file->sections; | |
24906 | ||
24907 | return cu->header.version >= 5 ? §ions->loclists : §ions->loc; | |
24908 | } | |
24909 | return (cu->header.version >= 5 ? &dwarf2_per_objfile->loclists | |
24910 | : &dwarf2_per_objfile->loc); | |
3019eac3 DE |
24911 | } |
24912 | ||
8cf6f0b1 TT |
24913 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
24914 | ||
24915 | static void | |
24916 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
24917 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 24918 | const struct attribute *attr) |
8cf6f0b1 | 24919 | { |
518817b3 SM |
24920 | struct dwarf2_per_objfile *dwarf2_per_objfile |
24921 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 DE |
24922 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
24923 | ||
24924 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
8cf6f0b1 TT |
24925 | |
24926 | baton->per_cu = cu->per_cu; | |
24927 | gdb_assert (baton->per_cu); | |
24928 | /* We don't know how long the location list is, but make sure we | |
24929 | don't run off the edge of the section. */ | |
3019eac3 DE |
24930 | baton->size = section->size - DW_UNSND (attr); |
24931 | baton->data = section->buffer + DW_UNSND (attr); | |
8cf6f0b1 | 24932 | baton->base_address = cu->base_address; |
f664829e | 24933 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
24934 | } |
24935 | ||
4c2df51b | 24936 | static void |
ff39bb5e | 24937 | dwarf2_symbol_mark_computed (const struct attribute *attr, struct symbol *sym, |
f1e6e072 | 24938 | struct dwarf2_cu *cu, int is_block) |
4c2df51b | 24939 | { |
518817b3 SM |
24940 | struct dwarf2_per_objfile *dwarf2_per_objfile |
24941 | = cu->per_cu->dwarf2_per_objfile; | |
bb5ed363 | 24942 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 | 24943 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 24944 | |
3690dd37 | 24945 | if (attr_form_is_section_offset (attr) |
3019eac3 | 24946 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
24947 | the section. If so, fall through to the complaint in the |
24948 | other branch. */ | |
3019eac3 | 24949 | && DW_UNSND (attr) < dwarf2_section_size (objfile, section)) |
4c2df51b | 24950 | { |
0d53c4c4 | 24951 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 24952 | |
8d749320 | 24953 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_loclist_baton); |
4c2df51b | 24954 | |
8cf6f0b1 | 24955 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 24956 | |
d00adf39 | 24957 | if (cu->base_known == 0) |
b98664d3 | 24958 | complaint (_("Location list used without " |
3e43a32a | 24959 | "specifying the CU base address.")); |
4c2df51b | 24960 | |
f1e6e072 TT |
24961 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
24962 | ? dwarf2_loclist_block_index | |
24963 | : dwarf2_loclist_index); | |
0d53c4c4 DJ |
24964 | SYMBOL_LOCATION_BATON (sym) = baton; |
24965 | } | |
24966 | else | |
24967 | { | |
24968 | struct dwarf2_locexpr_baton *baton; | |
24969 | ||
8d749320 | 24970 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
ae0d2f24 UW |
24971 | baton->per_cu = cu->per_cu; |
24972 | gdb_assert (baton->per_cu); | |
0d53c4c4 DJ |
24973 | |
24974 | if (attr_form_is_block (attr)) | |
24975 | { | |
24976 | /* Note that we're just copying the block's data pointer | |
24977 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
24978 | info_buffer for SYM's objfile; right now we never release |
24979 | that buffer, but when we do clean up properly this may | |
24980 | need to change. */ | |
0d53c4c4 DJ |
24981 | baton->size = DW_BLOCK (attr)->size; |
24982 | baton->data = DW_BLOCK (attr)->data; | |
24983 | } | |
24984 | else | |
24985 | { | |
24986 | dwarf2_invalid_attrib_class_complaint ("location description", | |
24987 | SYMBOL_NATURAL_NAME (sym)); | |
24988 | baton->size = 0; | |
0d53c4c4 | 24989 | } |
6e70227d | 24990 | |
f1e6e072 TT |
24991 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
24992 | ? dwarf2_locexpr_block_index | |
24993 | : dwarf2_locexpr_index); | |
0d53c4c4 DJ |
24994 | SYMBOL_LOCATION_BATON (sym) = baton; |
24995 | } | |
4c2df51b | 24996 | } |
6502dd73 | 24997 | |
9aa1f1e3 TT |
24998 | /* Return the OBJFILE associated with the compilation unit CU. If CU |
24999 | came from a separate debuginfo file, then the master objfile is | |
25000 | returned. */ | |
ae0d2f24 UW |
25001 | |
25002 | struct objfile * | |
25003 | dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *per_cu) | |
25004 | { | |
e3b94546 | 25005 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
ae0d2f24 UW |
25006 | |
25007 | /* Return the master objfile, so that we can report and look up the | |
25008 | correct file containing this variable. */ | |
25009 | if (objfile->separate_debug_objfile_backlink) | |
25010 | objfile = objfile->separate_debug_objfile_backlink; | |
25011 | ||
25012 | return objfile; | |
25013 | } | |
25014 | ||
96408a79 SA |
25015 | /* Return comp_unit_head for PER_CU, either already available in PER_CU->CU |
25016 | (CU_HEADERP is unused in such case) or prepare a temporary copy at | |
25017 | CU_HEADERP first. */ | |
25018 | ||
25019 | static const struct comp_unit_head * | |
25020 | per_cu_header_read_in (struct comp_unit_head *cu_headerp, | |
25021 | struct dwarf2_per_cu_data *per_cu) | |
25022 | { | |
d521ce57 | 25023 | const gdb_byte *info_ptr; |
96408a79 SA |
25024 | |
25025 | if (per_cu->cu) | |
25026 | return &per_cu->cu->header; | |
25027 | ||
9c541725 | 25028 | info_ptr = per_cu->section->buffer + to_underlying (per_cu->sect_off); |
96408a79 SA |
25029 | |
25030 | memset (cu_headerp, 0, sizeof (*cu_headerp)); | |
43988095 JK |
25031 | read_comp_unit_head (cu_headerp, info_ptr, per_cu->section, |
25032 | rcuh_kind::COMPILE); | |
96408a79 SA |
25033 | |
25034 | return cu_headerp; | |
25035 | } | |
25036 | ||
ae0d2f24 UW |
25037 | /* Return the address size given in the compilation unit header for CU. */ |
25038 | ||
98714339 | 25039 | int |
ae0d2f24 UW |
25040 | dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *per_cu) |
25041 | { | |
96408a79 SA |
25042 | struct comp_unit_head cu_header_local; |
25043 | const struct comp_unit_head *cu_headerp; | |
c471e790 | 25044 | |
96408a79 SA |
25045 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
25046 | ||
25047 | return cu_headerp->addr_size; | |
ae0d2f24 UW |
25048 | } |
25049 | ||
9eae7c52 TT |
25050 | /* Return the offset size given in the compilation unit header for CU. */ |
25051 | ||
25052 | int | |
25053 | dwarf2_per_cu_offset_size (struct dwarf2_per_cu_data *per_cu) | |
25054 | { | |
96408a79 SA |
25055 | struct comp_unit_head cu_header_local; |
25056 | const struct comp_unit_head *cu_headerp; | |
9c6c53f7 | 25057 | |
96408a79 SA |
25058 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
25059 | ||
25060 | return cu_headerp->offset_size; | |
25061 | } | |
25062 | ||
25063 | /* See its dwarf2loc.h declaration. */ | |
25064 | ||
25065 | int | |
25066 | dwarf2_per_cu_ref_addr_size (struct dwarf2_per_cu_data *per_cu) | |
25067 | { | |
25068 | struct comp_unit_head cu_header_local; | |
25069 | const struct comp_unit_head *cu_headerp; | |
25070 | ||
25071 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); | |
25072 | ||
25073 | if (cu_headerp->version == 2) | |
25074 | return cu_headerp->addr_size; | |
25075 | else | |
25076 | return cu_headerp->offset_size; | |
181cebd4 JK |
25077 | } |
25078 | ||
9aa1f1e3 TT |
25079 | /* Return the text offset of the CU. The returned offset comes from |
25080 | this CU's objfile. If this objfile came from a separate debuginfo | |
25081 | file, then the offset may be different from the corresponding | |
25082 | offset in the parent objfile. */ | |
25083 | ||
25084 | CORE_ADDR | |
25085 | dwarf2_per_cu_text_offset (struct dwarf2_per_cu_data *per_cu) | |
25086 | { | |
e3b94546 | 25087 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
9aa1f1e3 TT |
25088 | |
25089 | return ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
25090 | } | |
25091 | ||
43988095 JK |
25092 | /* Return DWARF version number of PER_CU. */ |
25093 | ||
25094 | short | |
25095 | dwarf2_version (struct dwarf2_per_cu_data *per_cu) | |
25096 | { | |
25097 | return per_cu->dwarf_version; | |
25098 | } | |
25099 | ||
348e048f DE |
25100 | /* Locate the .debug_info compilation unit from CU's objfile which contains |
25101 | the DIE at OFFSET. Raises an error on failure. */ | |
ae038cb0 DJ |
25102 | |
25103 | static struct dwarf2_per_cu_data * | |
9c541725 | 25104 | dwarf2_find_containing_comp_unit (sect_offset sect_off, |
36586728 | 25105 | unsigned int offset_in_dwz, |
ed2dc618 | 25106 | struct dwarf2_per_objfile *dwarf2_per_objfile) |
ae038cb0 DJ |
25107 | { |
25108 | struct dwarf2_per_cu_data *this_cu; | |
25109 | int low, high; | |
25110 | ||
ae038cb0 | 25111 | low = 0; |
b76e467d | 25112 | high = dwarf2_per_objfile->all_comp_units.size () - 1; |
ae038cb0 DJ |
25113 | while (high > low) |
25114 | { | |
36586728 | 25115 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 25116 | int mid = low + (high - low) / 2; |
9a619af0 | 25117 | |
36586728 | 25118 | mid_cu = dwarf2_per_objfile->all_comp_units[mid]; |
36586728 | 25119 | if (mid_cu->is_dwz > offset_in_dwz |
81fbbaf9 | 25120 | || (mid_cu->is_dwz == offset_in_dwz |
45b8ae0c | 25121 | && mid_cu->sect_off + mid_cu->length >= sect_off)) |
ae038cb0 DJ |
25122 | high = mid; |
25123 | else | |
25124 | low = mid + 1; | |
25125 | } | |
25126 | gdb_assert (low == high); | |
36586728 | 25127 | this_cu = dwarf2_per_objfile->all_comp_units[low]; |
45b8ae0c | 25128 | if (this_cu->is_dwz != offset_in_dwz || this_cu->sect_off > sect_off) |
ae038cb0 | 25129 | { |
36586728 | 25130 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 | 25131 | error (_("Dwarf Error: could not find partial DIE containing " |
9d8780f0 SM |
25132 | "offset %s [in module %s]"), |
25133 | sect_offset_str (sect_off), | |
ed2dc618 | 25134 | bfd_get_filename (dwarf2_per_objfile->objfile->obfd)); |
10b3939b | 25135 | |
9c541725 PA |
25136 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->sect_off |
25137 | <= sect_off); | |
ae038cb0 DJ |
25138 | return dwarf2_per_objfile->all_comp_units[low-1]; |
25139 | } | |
25140 | else | |
25141 | { | |
25142 | this_cu = dwarf2_per_objfile->all_comp_units[low]; | |
b76e467d | 25143 | if (low == dwarf2_per_objfile->all_comp_units.size () - 1 |
9c541725 | 25144 | && sect_off >= this_cu->sect_off + this_cu->length) |
9d8780f0 | 25145 | error (_("invalid dwarf2 offset %s"), sect_offset_str (sect_off)); |
9c541725 | 25146 | gdb_assert (sect_off < this_cu->sect_off + this_cu->length); |
ae038cb0 DJ |
25147 | return this_cu; |
25148 | } | |
25149 | } | |
25150 | ||
23745b47 | 25151 | /* Initialize dwarf2_cu CU, owned by PER_CU. */ |
93311388 | 25152 | |
fcd3b13d SM |
25153 | dwarf2_cu::dwarf2_cu (struct dwarf2_per_cu_data *per_cu_) |
25154 | : per_cu (per_cu_), | |
9068261f AB |
25155 | mark (false), |
25156 | has_loclist (false), | |
25157 | checked_producer (false), | |
25158 | producer_is_gxx_lt_4_6 (false), | |
25159 | producer_is_gcc_lt_4_3 (false), | |
eb77c9df | 25160 | producer_is_icc (false), |
9068261f | 25161 | producer_is_icc_lt_14 (false), |
c258c396 | 25162 | producer_is_codewarrior (false), |
9068261f | 25163 | processing_has_namespace_info (false) |
93311388 | 25164 | { |
fcd3b13d SM |
25165 | per_cu->cu = this; |
25166 | } | |
25167 | ||
25168 | /* Destroy a dwarf2_cu. */ | |
25169 | ||
25170 | dwarf2_cu::~dwarf2_cu () | |
25171 | { | |
25172 | per_cu->cu = NULL; | |
9816fde3 JK |
25173 | } |
25174 | ||
25175 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
25176 | ||
25177 | static void | |
95554aad TT |
25178 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
25179 | enum language pretend_language) | |
9816fde3 JK |
25180 | { |
25181 | struct attribute *attr; | |
25182 | ||
25183 | /* Set the language we're debugging. */ | |
25184 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
25185 | if (attr) | |
25186 | set_cu_language (DW_UNSND (attr), cu); | |
25187 | else | |
9cded63f | 25188 | { |
95554aad | 25189 | cu->language = pretend_language; |
9cded63f TT |
25190 | cu->language_defn = language_def (cu->language); |
25191 | } | |
dee91e82 | 25192 | |
7d45c7c3 | 25193 | cu->producer = dwarf2_string_attr (comp_unit_die, DW_AT_producer, cu); |
93311388 DE |
25194 | } |
25195 | ||
ae038cb0 DJ |
25196 | /* Increase the age counter on each cached compilation unit, and free |
25197 | any that are too old. */ | |
25198 | ||
25199 | static void | |
ed2dc618 | 25200 | age_cached_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
ae038cb0 DJ |
25201 | { |
25202 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
25203 | ||
25204 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
25205 | per_cu = dwarf2_per_objfile->read_in_chain; | |
25206 | while (per_cu != NULL) | |
25207 | { | |
25208 | per_cu->cu->last_used ++; | |
b4f54984 | 25209 | if (per_cu->cu->last_used <= dwarf_max_cache_age) |
ae038cb0 DJ |
25210 | dwarf2_mark (per_cu->cu); |
25211 | per_cu = per_cu->cu->read_in_chain; | |
25212 | } | |
25213 | ||
25214 | per_cu = dwarf2_per_objfile->read_in_chain; | |
25215 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
25216 | while (per_cu != NULL) | |
25217 | { | |
25218 | struct dwarf2_per_cu_data *next_cu; | |
25219 | ||
25220 | next_cu = per_cu->cu->read_in_chain; | |
25221 | ||
25222 | if (!per_cu->cu->mark) | |
25223 | { | |
fcd3b13d | 25224 | delete per_cu->cu; |
ae038cb0 DJ |
25225 | *last_chain = next_cu; |
25226 | } | |
25227 | else | |
25228 | last_chain = &per_cu->cu->read_in_chain; | |
25229 | ||
25230 | per_cu = next_cu; | |
25231 | } | |
25232 | } | |
25233 | ||
25234 | /* Remove a single compilation unit from the cache. */ | |
25235 | ||
25236 | static void | |
dee91e82 | 25237 | free_one_cached_comp_unit (struct dwarf2_per_cu_data *target_per_cu) |
ae038cb0 DJ |
25238 | { |
25239 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
ed2dc618 SM |
25240 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25241 | = target_per_cu->dwarf2_per_objfile; | |
ae038cb0 DJ |
25242 | |
25243 | per_cu = dwarf2_per_objfile->read_in_chain; | |
25244 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
25245 | while (per_cu != NULL) | |
25246 | { | |
25247 | struct dwarf2_per_cu_data *next_cu; | |
25248 | ||
25249 | next_cu = per_cu->cu->read_in_chain; | |
25250 | ||
dee91e82 | 25251 | if (per_cu == target_per_cu) |
ae038cb0 | 25252 | { |
fcd3b13d | 25253 | delete per_cu->cu; |
dee91e82 | 25254 | per_cu->cu = NULL; |
ae038cb0 DJ |
25255 | *last_chain = next_cu; |
25256 | break; | |
25257 | } | |
25258 | else | |
25259 | last_chain = &per_cu->cu->read_in_chain; | |
25260 | ||
25261 | per_cu = next_cu; | |
25262 | } | |
25263 | } | |
25264 | ||
d95d3aef | 25265 | /* Cleanup function for the dwarf2_per_objfile data. */ |
fe3e1990 | 25266 | |
d95d3aef TT |
25267 | static void |
25268 | dwarf2_free_objfile (struct objfile *objfile, void *datum) | |
fe3e1990 | 25269 | { |
ed2dc618 | 25270 | struct dwarf2_per_objfile *dwarf2_per_objfile |
d95d3aef | 25271 | = static_cast<struct dwarf2_per_objfile *> (datum); |
fe3e1990 | 25272 | |
fd90ace4 | 25273 | delete dwarf2_per_objfile; |
fe3e1990 DJ |
25274 | } |
25275 | ||
dee91e82 DE |
25276 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
25277 | We store these in a hash table separate from the DIEs, and preserve them | |
25278 | when the DIEs are flushed out of cache. | |
25279 | ||
25280 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 | 25281 | uniquely identify the type. A file may have multiple .debug_types sections, |
c88ee1f0 DE |
25282 | or the type may come from a DWO file. Furthermore, while it's more logical |
25283 | to use per_cu->section+offset, with Fission the section with the data is in | |
25284 | the DWO file but we don't know that section at the point we need it. | |
25285 | We have to use something in dwarf2_per_cu_data (or the pointer to it) | |
25286 | because we can enter the lookup routine, get_die_type_at_offset, from | |
25287 | outside this file, and thus won't necessarily have PER_CU->cu. | |
25288 | Fortunately, PER_CU is stable for the life of the objfile. */ | |
1c379e20 | 25289 | |
dee91e82 | 25290 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 25291 | { |
dee91e82 | 25292 | const struct dwarf2_per_cu_data *per_cu; |
9c541725 | 25293 | sect_offset sect_off; |
1c379e20 DJ |
25294 | struct type *type; |
25295 | }; | |
25296 | ||
dee91e82 | 25297 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
25298 | |
25299 | static hashval_t | |
dee91e82 | 25300 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 25301 | { |
9a3c8263 SM |
25302 | const struct dwarf2_per_cu_offset_and_type *ofs |
25303 | = (const struct dwarf2_per_cu_offset_and_type *) item; | |
9a619af0 | 25304 | |
9c541725 | 25305 | return (uintptr_t) ofs->per_cu + to_underlying (ofs->sect_off); |
1c379e20 DJ |
25306 | } |
25307 | ||
dee91e82 | 25308 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
25309 | |
25310 | static int | |
dee91e82 | 25311 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 25312 | { |
9a3c8263 SM |
25313 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs |
25314 | = (const struct dwarf2_per_cu_offset_and_type *) item_lhs; | |
25315 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs | |
25316 | = (const struct dwarf2_per_cu_offset_and_type *) item_rhs; | |
9a619af0 | 25317 | |
dee91e82 | 25318 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
9c541725 | 25319 | && ofs_lhs->sect_off == ofs_rhs->sect_off); |
1c379e20 DJ |
25320 | } |
25321 | ||
25322 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
25323 | table if necessary. For convenience, return TYPE. |
25324 | ||
25325 | The DIEs reading must have careful ordering to: | |
25326 | * Not cause infite loops trying to read in DIEs as a prerequisite for | |
25327 | reading current DIE. | |
25328 | * Not trying to dereference contents of still incompletely read in types | |
25329 | while reading in other DIEs. | |
25330 | * Enable referencing still incompletely read in types just by a pointer to | |
25331 | the type without accessing its fields. | |
25332 | ||
25333 | Therefore caller should follow these rules: | |
25334 | * Try to fetch any prerequisite types we may need to build this DIE type | |
25335 | before building the type and calling set_die_type. | |
e71ec853 | 25336 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
25337 | possible before fetching more types to complete the current type. |
25338 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 25339 | |
f792889a | 25340 | static struct type * |
1c379e20 DJ |
25341 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
25342 | { | |
518817b3 SM |
25343 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25344 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 25345 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
ed2dc618 | 25346 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3cdcd0ce JB |
25347 | struct attribute *attr; |
25348 | struct dynamic_prop prop; | |
1c379e20 | 25349 | |
b4ba55a1 JB |
25350 | /* For Ada types, make sure that the gnat-specific data is always |
25351 | initialized (if not already set). There are a few types where | |
25352 | we should not be doing so, because the type-specific area is | |
25353 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
25354 | where the type-specific area is used to store the floatformat). | |
25355 | But this is not a problem, because the gnat-specific information | |
25356 | is actually not needed for these types. */ | |
25357 | if (need_gnat_info (cu) | |
25358 | && TYPE_CODE (type) != TYPE_CODE_FUNC | |
25359 | && TYPE_CODE (type) != TYPE_CODE_FLT | |
09e2d7c7 DE |
25360 | && TYPE_CODE (type) != TYPE_CODE_METHODPTR |
25361 | && TYPE_CODE (type) != TYPE_CODE_MEMBERPTR | |
25362 | && TYPE_CODE (type) != TYPE_CODE_METHOD | |
b4ba55a1 JB |
25363 | && !HAVE_GNAT_AUX_INFO (type)) |
25364 | INIT_GNAT_SPECIFIC (type); | |
25365 | ||
3f2f83dd KB |
25366 | /* Read DW_AT_allocated and set in type. */ |
25367 | attr = dwarf2_attr (die, DW_AT_allocated, cu); | |
25368 | if (attr_form_is_block (attr)) | |
25369 | { | |
25370 | if (attr_to_dynamic_prop (attr, die, cu, &prop)) | |
50a82047 | 25371 | add_dyn_prop (DYN_PROP_ALLOCATED, prop, type); |
3f2f83dd KB |
25372 | } |
25373 | else if (attr != NULL) | |
25374 | { | |
b98664d3 | 25375 | complaint (_("DW_AT_allocated has the wrong form (%s) at DIE %s"), |
9c541725 | 25376 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), |
9d8780f0 | 25377 | sect_offset_str (die->sect_off)); |
3f2f83dd KB |
25378 | } |
25379 | ||
25380 | /* Read DW_AT_associated and set in type. */ | |
25381 | attr = dwarf2_attr (die, DW_AT_associated, cu); | |
25382 | if (attr_form_is_block (attr)) | |
25383 | { | |
25384 | if (attr_to_dynamic_prop (attr, die, cu, &prop)) | |
50a82047 | 25385 | add_dyn_prop (DYN_PROP_ASSOCIATED, prop, type); |
3f2f83dd KB |
25386 | } |
25387 | else if (attr != NULL) | |
25388 | { | |
b98664d3 | 25389 | complaint (_("DW_AT_associated has the wrong form (%s) at DIE %s"), |
9c541725 | 25390 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), |
9d8780f0 | 25391 | sect_offset_str (die->sect_off)); |
3f2f83dd KB |
25392 | } |
25393 | ||
3cdcd0ce JB |
25394 | /* Read DW_AT_data_location and set in type. */ |
25395 | attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
25396 | if (attr_to_dynamic_prop (attr, die, cu, &prop)) | |
50a82047 | 25397 | add_dyn_prop (DYN_PROP_DATA_LOCATION, prop, type); |
3cdcd0ce | 25398 | |
dee91e82 | 25399 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 25400 | { |
dee91e82 DE |
25401 | dwarf2_per_objfile->die_type_hash = |
25402 | htab_create_alloc_ex (127, | |
25403 | per_cu_offset_and_type_hash, | |
25404 | per_cu_offset_and_type_eq, | |
25405 | NULL, | |
25406 | &objfile->objfile_obstack, | |
25407 | hashtab_obstack_allocate, | |
25408 | dummy_obstack_deallocate); | |
f792889a | 25409 | } |
1c379e20 | 25410 | |
dee91e82 | 25411 | ofs.per_cu = cu->per_cu; |
9c541725 | 25412 | ofs.sect_off = die->sect_off; |
1c379e20 | 25413 | ofs.type = type; |
dee91e82 DE |
25414 | slot = (struct dwarf2_per_cu_offset_and_type **) |
25415 | htab_find_slot (dwarf2_per_objfile->die_type_hash, &ofs, INSERT); | |
7e314c57 | 25416 | if (*slot) |
b98664d3 | 25417 | complaint (_("A problem internal to GDB: DIE %s has type already set"), |
9d8780f0 | 25418 | sect_offset_str (die->sect_off)); |
8d749320 SM |
25419 | *slot = XOBNEW (&objfile->objfile_obstack, |
25420 | struct dwarf2_per_cu_offset_and_type); | |
1c379e20 | 25421 | **slot = ofs; |
f792889a | 25422 | return type; |
1c379e20 DJ |
25423 | } |
25424 | ||
9c541725 | 25425 | /* Look up the type for the die at SECT_OFF in PER_CU in die_type_hash, |
02142a6c | 25426 | or return NULL if the die does not have a saved type. */ |
1c379e20 DJ |
25427 | |
25428 | static struct type * | |
9c541725 | 25429 | get_die_type_at_offset (sect_offset sect_off, |
673bfd45 | 25430 | struct dwarf2_per_cu_data *per_cu) |
1c379e20 | 25431 | { |
dee91e82 | 25432 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
ed2dc618 | 25433 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
f792889a | 25434 | |
dee91e82 | 25435 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 25436 | return NULL; |
1c379e20 | 25437 | |
dee91e82 | 25438 | ofs.per_cu = per_cu; |
9c541725 | 25439 | ofs.sect_off = sect_off; |
9a3c8263 SM |
25440 | slot = ((struct dwarf2_per_cu_offset_and_type *) |
25441 | htab_find (dwarf2_per_objfile->die_type_hash, &ofs)); | |
1c379e20 DJ |
25442 | if (slot) |
25443 | return slot->type; | |
25444 | else | |
25445 | return NULL; | |
25446 | } | |
25447 | ||
02142a6c | 25448 | /* Look up the type for DIE in CU in die_type_hash, |
673bfd45 DE |
25449 | or return NULL if DIE does not have a saved type. */ |
25450 | ||
25451 | static struct type * | |
25452 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
25453 | { | |
9c541725 | 25454 | return get_die_type_at_offset (die->sect_off, cu->per_cu); |
673bfd45 DE |
25455 | } |
25456 | ||
10b3939b DJ |
25457 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
25458 | ||
25459 | static void | |
25460 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
25461 | struct dwarf2_per_cu_data *ref_per_cu) | |
25462 | { | |
25463 | void **slot; | |
25464 | ||
25465 | if (cu->dependencies == NULL) | |
25466 | cu->dependencies | |
25467 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
25468 | NULL, &cu->comp_unit_obstack, | |
25469 | hashtab_obstack_allocate, | |
25470 | dummy_obstack_deallocate); | |
25471 | ||
25472 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
25473 | if (*slot == NULL) | |
25474 | *slot = ref_per_cu; | |
25475 | } | |
1c379e20 | 25476 | |
f504f079 DE |
25477 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
25478 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
25479 | cache that we must keep because we are keeping CU. */ |
25480 | ||
10b3939b DJ |
25481 | static int |
25482 | dwarf2_mark_helper (void **slot, void *data) | |
25483 | { | |
25484 | struct dwarf2_per_cu_data *per_cu; | |
25485 | ||
25486 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
d07ed419 JK |
25487 | |
25488 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
25489 | reading of the chain. As such dependencies remain valid it is not much | |
25490 | useful to track and undo them during QUIT cleanups. */ | |
25491 | if (per_cu->cu == NULL) | |
25492 | return 1; | |
25493 | ||
10b3939b DJ |
25494 | if (per_cu->cu->mark) |
25495 | return 1; | |
9068261f | 25496 | per_cu->cu->mark = true; |
10b3939b DJ |
25497 | |
25498 | if (per_cu->cu->dependencies != NULL) | |
25499 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
25500 | ||
25501 | return 1; | |
25502 | } | |
25503 | ||
f504f079 DE |
25504 | /* Set the mark field in CU and in every other compilation unit in the |
25505 | cache that we must keep because we are keeping CU. */ | |
25506 | ||
ae038cb0 DJ |
25507 | static void |
25508 | dwarf2_mark (struct dwarf2_cu *cu) | |
25509 | { | |
25510 | if (cu->mark) | |
25511 | return; | |
9068261f | 25512 | cu->mark = true; |
10b3939b DJ |
25513 | if (cu->dependencies != NULL) |
25514 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
25515 | } |
25516 | ||
25517 | static void | |
25518 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
25519 | { | |
25520 | while (per_cu) | |
25521 | { | |
9068261f | 25522 | per_cu->cu->mark = false; |
ae038cb0 DJ |
25523 | per_cu = per_cu->cu->read_in_chain; |
25524 | } | |
72bf9492 DJ |
25525 | } |
25526 | ||
72bf9492 DJ |
25527 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
25528 | is its offset in .debug_info for this objfile. */ | |
25529 | ||
25530 | static hashval_t | |
25531 | partial_die_hash (const void *item) | |
25532 | { | |
9a3c8263 SM |
25533 | const struct partial_die_info *part_die |
25534 | = (const struct partial_die_info *) item; | |
9a619af0 | 25535 | |
9c541725 | 25536 | return to_underlying (part_die->sect_off); |
72bf9492 DJ |
25537 | } |
25538 | ||
25539 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
25540 | are equal if they have the same offset. */ | |
25541 | ||
25542 | static int | |
25543 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
25544 | { | |
9a3c8263 SM |
25545 | const struct partial_die_info *part_die_lhs |
25546 | = (const struct partial_die_info *) item_lhs; | |
25547 | const struct partial_die_info *part_die_rhs | |
25548 | = (const struct partial_die_info *) item_rhs; | |
9a619af0 | 25549 | |
9c541725 | 25550 | return part_die_lhs->sect_off == part_die_rhs->sect_off; |
72bf9492 DJ |
25551 | } |
25552 | ||
3c3bb058 AB |
25553 | struct cmd_list_element *set_dwarf_cmdlist; |
25554 | struct cmd_list_element *show_dwarf_cmdlist; | |
ae038cb0 DJ |
25555 | |
25556 | static void | |
981a3fb3 | 25557 | set_dwarf_cmd (const char *args, int from_tty) |
ae038cb0 | 25558 | { |
b4f54984 | 25559 | help_list (set_dwarf_cmdlist, "maintenance set dwarf ", all_commands, |
635c7e8a | 25560 | gdb_stdout); |
ae038cb0 DJ |
25561 | } |
25562 | ||
25563 | static void | |
981a3fb3 | 25564 | show_dwarf_cmd (const char *args, int from_tty) |
6e70227d | 25565 | { |
b4f54984 | 25566 | cmd_show_list (show_dwarf_cmdlist, from_tty, ""); |
ae038cb0 DJ |
25567 | } |
25568 | ||
cd4fb1b2 | 25569 | int dwarf_always_disassemble; |
437afbb8 | 25570 | |
437afbb8 | 25571 | static void |
cd4fb1b2 SM |
25572 | show_dwarf_always_disassemble (struct ui_file *file, int from_tty, |
25573 | struct cmd_list_element *c, const char *value) | |
9291a0cd | 25574 | { |
cd4fb1b2 SM |
25575 | fprintf_filtered (file, |
25576 | _("Whether to always disassemble " | |
25577 | "DWARF expressions is %s.\n"), | |
25578 | value); | |
9291a0cd TT |
25579 | } |
25580 | ||
9291a0cd | 25581 | static void |
cd4fb1b2 SM |
25582 | show_check_physname (struct ui_file *file, int from_tty, |
25583 | struct cmd_list_element *c, const char *value) | |
9291a0cd | 25584 | { |
cd4fb1b2 SM |
25585 | fprintf_filtered (file, |
25586 | _("Whether to check \"physname\" is %s.\n"), | |
25587 | value); | |
9291a0cd TT |
25588 | } |
25589 | ||
cd4fb1b2 SM |
25590 | void |
25591 | _initialize_dwarf2_read (void) | |
9291a0cd | 25592 | { |
d95d3aef TT |
25593 | dwarf2_objfile_data_key |
25594 | = register_objfile_data_with_cleanup (nullptr, dwarf2_free_objfile); | |
156942c7 | 25595 | |
cd4fb1b2 SM |
25596 | add_prefix_cmd ("dwarf", class_maintenance, set_dwarf_cmd, _("\ |
25597 | Set DWARF specific variables.\n\ | |
25598 | Configure DWARF variables such as the cache size"), | |
25599 | &set_dwarf_cmdlist, "maintenance set dwarf ", | |
25600 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
156942c7 | 25601 | |
cd4fb1b2 SM |
25602 | add_prefix_cmd ("dwarf", class_maintenance, show_dwarf_cmd, _("\ |
25603 | Show DWARF specific variables\n\ | |
25604 | Show DWARF variables such as the cache size"), | |
25605 | &show_dwarf_cmdlist, "maintenance show dwarf ", | |
25606 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
156942c7 | 25607 | |
cd4fb1b2 SM |
25608 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, |
25609 | &dwarf_max_cache_age, _("\ | |
25610 | Set the upper bound on the age of cached DWARF compilation units."), _("\ | |
25611 | Show the upper bound on the age of cached DWARF compilation units."), _("\ | |
25612 | A higher limit means that cached compilation units will be stored\n\ | |
25613 | in memory longer, and more total memory will be used. Zero disables\n\ | |
25614 | caching, which can slow down startup."), | |
25615 | NULL, | |
25616 | show_dwarf_max_cache_age, | |
25617 | &set_dwarf_cmdlist, | |
25618 | &show_dwarf_cmdlist); | |
156942c7 | 25619 | |
cd4fb1b2 SM |
25620 | add_setshow_boolean_cmd ("always-disassemble", class_obscure, |
25621 | &dwarf_always_disassemble, _("\ | |
25622 | Set whether `info address' always disassembles DWARF expressions."), _("\ | |
25623 | Show whether `info address' always disassembles DWARF expressions."), _("\ | |
25624 | When enabled, DWARF expressions are always printed in an assembly-like\n\ | |
25625 | syntax. When disabled, expressions will be printed in a more\n\ | |
25626 | conversational style, when possible."), | |
25627 | NULL, | |
25628 | show_dwarf_always_disassemble, | |
25629 | &set_dwarf_cmdlist, | |
25630 | &show_dwarf_cmdlist); | |
9291a0cd | 25631 | |
cd4fb1b2 SM |
25632 | add_setshow_zuinteger_cmd ("dwarf-read", no_class, &dwarf_read_debug, _("\ |
25633 | Set debugging of the DWARF reader."), _("\ | |
25634 | Show debugging of the DWARF reader."), _("\ | |
25635 | When enabled (non-zero), debugging messages are printed during DWARF\n\ | |
25636 | reading and symtab expansion. A value of 1 (one) provides basic\n\ | |
25637 | information. A value greater than 1 provides more verbose information."), | |
25638 | NULL, | |
25639 | NULL, | |
25640 | &setdebuglist, &showdebuglist); | |
9291a0cd | 25641 | |
cd4fb1b2 SM |
25642 | add_setshow_zuinteger_cmd ("dwarf-die", no_class, &dwarf_die_debug, _("\ |
25643 | Set debugging of the DWARF DIE reader."), _("\ | |
25644 | Show debugging of the DWARF DIE reader."), _("\ | |
25645 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
25646 | The value is the maximum depth to print."), | |
25647 | NULL, | |
25648 | NULL, | |
25649 | &setdebuglist, &showdebuglist); | |
9291a0cd | 25650 | |
cd4fb1b2 SM |
25651 | add_setshow_zuinteger_cmd ("dwarf-line", no_class, &dwarf_line_debug, _("\ |
25652 | Set debugging of the dwarf line reader."), _("\ | |
25653 | Show debugging of the dwarf line reader."), _("\ | |
25654 | When enabled (non-zero), line number entries are dumped as they are read in.\n\ | |
25655 | A value of 1 (one) provides basic information.\n\ | |
25656 | A value greater than 1 provides more verbose information."), | |
25657 | NULL, | |
25658 | NULL, | |
25659 | &setdebuglist, &showdebuglist); | |
437afbb8 | 25660 | |
cd4fb1b2 SM |
25661 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
25662 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
25663 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
25664 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
25665 | the demangler."), | |
25666 | NULL, show_check_physname, | |
25667 | &setdebuglist, &showdebuglist); | |
900e11f9 | 25668 | |
e615022a DE |
25669 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
25670 | no_class, &use_deprecated_index_sections, _("\ | |
25671 | Set whether to use deprecated gdb_index sections."), _("\ | |
25672 | Show whether to use deprecated gdb_index sections."), _("\ | |
25673 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
25674 | Normally they are ignored either because of a missing feature or\n\ | |
25675 | performance issue.\n\ | |
25676 | Warning: This option must be enabled before gdb reads the file."), | |
25677 | NULL, | |
25678 | NULL, | |
25679 | &setlist, &showlist); | |
25680 | ||
f1e6e072 TT |
25681 | dwarf2_locexpr_index = register_symbol_computed_impl (LOC_COMPUTED, |
25682 | &dwarf2_locexpr_funcs); | |
25683 | dwarf2_loclist_index = register_symbol_computed_impl (LOC_COMPUTED, | |
25684 | &dwarf2_loclist_funcs); | |
25685 | ||
25686 | dwarf2_locexpr_block_index = register_symbol_block_impl (LOC_BLOCK, | |
25687 | &dwarf2_block_frame_base_locexpr_funcs); | |
25688 | dwarf2_loclist_block_index = register_symbol_block_impl (LOC_BLOCK, | |
25689 | &dwarf2_block_frame_base_loclist_funcs); | |
c62446b1 PA |
25690 | |
25691 | #if GDB_SELF_TEST | |
25692 | selftests::register_test ("dw2_expand_symtabs_matching", | |
25693 | selftests::dw2_expand_symtabs_matching::run_test); | |
25694 | #endif | |
6502dd73 | 25695 | } |