Commit | Line | Data |
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c906108c | 1 | /* DWARF 2 debugging format support for GDB. |
917c78fc | 2 | |
e2882c85 | 3 | Copyright (C) 1994-2018 Free Software Foundation, Inc. |
c906108c SS |
4 | |
5 | Adapted by Gary Funck (gary@intrepid.com), Intrepid Technology, | |
6 | Inc. with support from Florida State University (under contract | |
7 | with the Ada Joint Program Office), and Silicon Graphics, Inc. | |
8 | Initial contribution by Brent Benson, Harris Computer Systems, Inc., | |
9 | based on Fred Fish's (Cygnus Support) implementation of DWARF 1 | |
7ce59000 | 10 | support. |
c906108c | 11 | |
c5aa993b | 12 | This file is part of GDB. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is free software; you can redistribute it and/or modify |
15 | it under the terms of the GNU General Public License as published by | |
a9762ec7 JB |
16 | the Free Software Foundation; either version 3 of the License, or |
17 | (at your option) any later version. | |
c906108c | 18 | |
a9762ec7 JB |
19 | This program is distributed in the hope that it will be useful, |
20 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | GNU General Public License for more details. | |
c906108c | 23 | |
c5aa993b | 24 | You should have received a copy of the GNU General Public License |
a9762ec7 | 25 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c | 26 | |
21b2bd31 DE |
27 | /* FIXME: Various die-reading functions need to be more careful with |
28 | reading off the end of the section. | |
29 | E.g., load_partial_dies, read_partial_die. */ | |
30 | ||
c906108c | 31 | #include "defs.h" |
cd4fb1b2 | 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 DJ |
538 | /* Mark used when releasing cached dies. */ |
539 | unsigned int mark : 1; | |
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. */ | |
8be455d7 | 545 | unsigned int has_loclist : 1; |
ba919b58 | 546 | |
1b80a9fa JK |
547 | /* These cache the results for producer_is_* fields. CHECKED_PRODUCER is set |
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. */ | |
ba919b58 TT |
551 | unsigned int checked_producer : 1; |
552 | unsigned int producer_is_gxx_lt_4_6 : 1; | |
1b80a9fa | 553 | unsigned int producer_is_gcc_lt_4_3 : 1; |
5230b05a | 554 | unsigned int producer_is_icc_lt_14 : 1; |
4d4ec4e5 TT |
555 | |
556 | /* When set, the file that we're processing is known to have | |
557 | debugging info for C++ namespaces. GCC 3.3.x did not produce | |
558 | this information, but later versions do. */ | |
559 | ||
560 | unsigned int processing_has_namespace_info : 1; | |
d590ff25 YQ |
561 | |
562 | struct partial_die_info *find_partial_die (sect_offset sect_off); | |
e7c27a73 DJ |
563 | }; |
564 | ||
094b34ac DE |
565 | /* A struct that can be used as a hash key for tables based on DW_AT_stmt_list. |
566 | This includes type_unit_group and quick_file_names. */ | |
567 | ||
568 | struct stmt_list_hash | |
569 | { | |
570 | /* The DWO unit this table is from or NULL if there is none. */ | |
571 | struct dwo_unit *dwo_unit; | |
572 | ||
573 | /* Offset in .debug_line or .debug_line.dwo. */ | |
9c541725 | 574 | sect_offset line_sect_off; |
094b34ac DE |
575 | }; |
576 | ||
f4dc4d17 DE |
577 | /* Each element of dwarf2_per_objfile->type_unit_groups is a pointer to |
578 | an object of this type. */ | |
579 | ||
580 | struct type_unit_group | |
581 | { | |
0186c6a7 | 582 | /* dwarf2read.c's main "handle" on a TU symtab. |
f4dc4d17 DE |
583 | To simplify things we create an artificial CU that "includes" all the |
584 | type units using this stmt_list so that the rest of the code still has | |
585 | a "per_cu" handle on the symtab. | |
586 | This PER_CU is recognized by having no section. */ | |
8a0459fd | 587 | #define IS_TYPE_UNIT_GROUP(per_cu) ((per_cu)->section == NULL) |
094b34ac DE |
588 | struct dwarf2_per_cu_data per_cu; |
589 | ||
0186c6a7 DE |
590 | /* The TUs that share this DW_AT_stmt_list entry. |
591 | This is added to while parsing type units to build partial symtabs, | |
592 | and is deleted afterwards and not used again. */ | |
593 | VEC (sig_type_ptr) *tus; | |
f4dc4d17 | 594 | |
43f3e411 | 595 | /* The compunit symtab. |
094b34ac | 596 | Type units in a group needn't all be defined in the same source file, |
43f3e411 DE |
597 | so we create an essentially anonymous symtab as the compunit symtab. */ |
598 | struct compunit_symtab *compunit_symtab; | |
f4dc4d17 | 599 | |
094b34ac DE |
600 | /* The data used to construct the hash key. */ |
601 | struct stmt_list_hash hash; | |
f4dc4d17 DE |
602 | |
603 | /* The number of symtabs from the line header. | |
604 | The value here must match line_header.num_file_names. */ | |
605 | unsigned int num_symtabs; | |
606 | ||
607 | /* The symbol tables for this TU (obtained from the files listed in | |
608 | DW_AT_stmt_list). | |
609 | WARNING: The order of entries here must match the order of entries | |
610 | in the line header. After the first TU using this type_unit_group, the | |
611 | line header for the subsequent TUs is recreated from this. This is done | |
612 | because we need to use the same symtabs for each TU using the same | |
613 | DW_AT_stmt_list value. Also note that symtabs may be repeated here, | |
614 | there's no guarantee the line header doesn't have duplicate entries. */ | |
615 | struct symtab **symtabs; | |
616 | }; | |
617 | ||
73869dc2 | 618 | /* These sections are what may appear in a (real or virtual) DWO file. */ |
3019eac3 DE |
619 | |
620 | struct dwo_sections | |
621 | { | |
622 | struct dwarf2_section_info abbrev; | |
3019eac3 DE |
623 | struct dwarf2_section_info line; |
624 | struct dwarf2_section_info loc; | |
43988095 | 625 | struct dwarf2_section_info loclists; |
09262596 DE |
626 | struct dwarf2_section_info macinfo; |
627 | struct dwarf2_section_info macro; | |
3019eac3 DE |
628 | struct dwarf2_section_info str; |
629 | struct dwarf2_section_info str_offsets; | |
80626a55 DE |
630 | /* In the case of a virtual DWO file, these two are unused. */ |
631 | struct dwarf2_section_info info; | |
3019eac3 DE |
632 | VEC (dwarf2_section_info_def) *types; |
633 | }; | |
634 | ||
c88ee1f0 | 635 | /* CUs/TUs in DWP/DWO files. */ |
3019eac3 DE |
636 | |
637 | struct dwo_unit | |
638 | { | |
639 | /* Backlink to the containing struct dwo_file. */ | |
640 | struct dwo_file *dwo_file; | |
641 | ||
642 | /* The "id" that distinguishes this CU/TU. | |
643 | .debug_info calls this "dwo_id", .debug_types calls this "signature". | |
644 | Since signatures came first, we stick with it for consistency. */ | |
645 | ULONGEST signature; | |
646 | ||
647 | /* The section this CU/TU lives in, in the DWO file. */ | |
8a0459fd | 648 | struct dwarf2_section_info *section; |
3019eac3 | 649 | |
9c541725 PA |
650 | /* Same as dwarf2_per_cu_data:{sect_off,length} but in the DWO section. */ |
651 | sect_offset sect_off; | |
3019eac3 DE |
652 | unsigned int length; |
653 | ||
654 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
655 | cu_offset type_offset_in_tu; | |
656 | }; | |
657 | ||
73869dc2 DE |
658 | /* include/dwarf2.h defines the DWP section codes. |
659 | It defines a max value but it doesn't define a min value, which we | |
660 | use for error checking, so provide one. */ | |
661 | ||
662 | enum dwp_v2_section_ids | |
663 | { | |
664 | DW_SECT_MIN = 1 | |
665 | }; | |
666 | ||
80626a55 | 667 | /* Data for one DWO file. |
57d63ce2 DE |
668 | |
669 | This includes virtual DWO files (a virtual DWO file is a DWO file as it | |
670 | appears in a DWP file). DWP files don't really have DWO files per se - | |
671 | comdat folding of types "loses" the DWO file they came from, and from | |
672 | a high level view DWP files appear to contain a mass of random types. | |
673 | However, to maintain consistency with the non-DWP case we pretend DWP | |
674 | files contain virtual DWO files, and we assign each TU with one virtual | |
675 | DWO file (generally based on the line and abbrev section offsets - | |
676 | a heuristic that seems to work in practice). */ | |
3019eac3 DE |
677 | |
678 | struct dwo_file | |
679 | { | |
0ac5b59e | 680 | /* The DW_AT_GNU_dwo_name attribute. |
80626a55 DE |
681 | For virtual DWO files the name is constructed from the section offsets |
682 | of abbrev,line,loc,str_offsets so that we combine virtual DWO files | |
683 | from related CU+TUs. */ | |
0ac5b59e DE |
684 | const char *dwo_name; |
685 | ||
686 | /* The DW_AT_comp_dir attribute. */ | |
687 | const char *comp_dir; | |
3019eac3 | 688 | |
80626a55 DE |
689 | /* The bfd, when the file is open. Otherwise this is NULL. |
690 | This is unused(NULL) for virtual DWO files where we use dwp_file.dbfd. */ | |
691 | bfd *dbfd; | |
3019eac3 | 692 | |
73869dc2 DE |
693 | /* The sections that make up this DWO file. |
694 | Remember that for virtual DWO files in DWP V2, these are virtual | |
695 | sections (for lack of a better name). */ | |
3019eac3 DE |
696 | struct dwo_sections sections; |
697 | ||
33c5cd75 DB |
698 | /* The CUs in the file. |
699 | Each element is a struct dwo_unit. Multiple CUs per DWO are supported as | |
700 | an extension to handle LLVM's Link Time Optimization output (where | |
701 | multiple source files may be compiled into a single object/dwo pair). */ | |
702 | htab_t cus; | |
3019eac3 DE |
703 | |
704 | /* Table of TUs in the file. | |
705 | Each element is a struct dwo_unit. */ | |
706 | htab_t tus; | |
707 | }; | |
708 | ||
80626a55 DE |
709 | /* These sections are what may appear in a DWP file. */ |
710 | ||
711 | struct dwp_sections | |
712 | { | |
73869dc2 | 713 | /* These are used by both DWP version 1 and 2. */ |
80626a55 DE |
714 | struct dwarf2_section_info str; |
715 | struct dwarf2_section_info cu_index; | |
716 | struct dwarf2_section_info tu_index; | |
73869dc2 DE |
717 | |
718 | /* These are only used by DWP version 2 files. | |
719 | In DWP version 1 the .debug_info.dwo, .debug_types.dwo, and other | |
720 | sections are referenced by section number, and are not recorded here. | |
721 | In DWP version 2 there is at most one copy of all these sections, each | |
722 | section being (effectively) comprised of the concatenation of all of the | |
723 | individual sections that exist in the version 1 format. | |
724 | To keep the code simple we treat each of these concatenated pieces as a | |
725 | section itself (a virtual section?). */ | |
726 | struct dwarf2_section_info abbrev; | |
727 | struct dwarf2_section_info info; | |
728 | struct dwarf2_section_info line; | |
729 | struct dwarf2_section_info loc; | |
730 | struct dwarf2_section_info macinfo; | |
731 | struct dwarf2_section_info macro; | |
732 | struct dwarf2_section_info str_offsets; | |
733 | struct dwarf2_section_info types; | |
80626a55 DE |
734 | }; |
735 | ||
73869dc2 DE |
736 | /* These sections are what may appear in a virtual DWO file in DWP version 1. |
737 | A virtual DWO file is a DWO file as it appears in a DWP file. */ | |
80626a55 | 738 | |
73869dc2 | 739 | struct virtual_v1_dwo_sections |
80626a55 DE |
740 | { |
741 | struct dwarf2_section_info abbrev; | |
742 | struct dwarf2_section_info line; | |
743 | struct dwarf2_section_info loc; | |
744 | struct dwarf2_section_info macinfo; | |
745 | struct dwarf2_section_info macro; | |
746 | struct dwarf2_section_info str_offsets; | |
747 | /* Each DWP hash table entry records one CU or one TU. | |
8a0459fd | 748 | That is recorded here, and copied to dwo_unit.section. */ |
80626a55 DE |
749 | struct dwarf2_section_info info_or_types; |
750 | }; | |
751 | ||
73869dc2 DE |
752 | /* Similar to virtual_v1_dwo_sections, but for DWP version 2. |
753 | In version 2, the sections of the DWO files are concatenated together | |
754 | and stored in one section of that name. Thus each ELF section contains | |
755 | several "virtual" sections. */ | |
756 | ||
757 | struct virtual_v2_dwo_sections | |
758 | { | |
759 | bfd_size_type abbrev_offset; | |
760 | bfd_size_type abbrev_size; | |
761 | ||
762 | bfd_size_type line_offset; | |
763 | bfd_size_type line_size; | |
764 | ||
765 | bfd_size_type loc_offset; | |
766 | bfd_size_type loc_size; | |
767 | ||
768 | bfd_size_type macinfo_offset; | |
769 | bfd_size_type macinfo_size; | |
770 | ||
771 | bfd_size_type macro_offset; | |
772 | bfd_size_type macro_size; | |
773 | ||
774 | bfd_size_type str_offsets_offset; | |
775 | bfd_size_type str_offsets_size; | |
776 | ||
777 | /* Each DWP hash table entry records one CU or one TU. | |
778 | That is recorded here, and copied to dwo_unit.section. */ | |
779 | bfd_size_type info_or_types_offset; | |
780 | bfd_size_type info_or_types_size; | |
781 | }; | |
782 | ||
80626a55 DE |
783 | /* Contents of DWP hash tables. */ |
784 | ||
785 | struct dwp_hash_table | |
786 | { | |
73869dc2 | 787 | uint32_t version, nr_columns; |
80626a55 | 788 | uint32_t nr_units, nr_slots; |
73869dc2 DE |
789 | const gdb_byte *hash_table, *unit_table; |
790 | union | |
791 | { | |
792 | struct | |
793 | { | |
794 | const gdb_byte *indices; | |
795 | } v1; | |
796 | struct | |
797 | { | |
798 | /* This is indexed by column number and gives the id of the section | |
799 | in that column. */ | |
800 | #define MAX_NR_V2_DWO_SECTIONS \ | |
801 | (1 /* .debug_info or .debug_types */ \ | |
802 | + 1 /* .debug_abbrev */ \ | |
803 | + 1 /* .debug_line */ \ | |
804 | + 1 /* .debug_loc */ \ | |
805 | + 1 /* .debug_str_offsets */ \ | |
806 | + 1 /* .debug_macro or .debug_macinfo */) | |
807 | int section_ids[MAX_NR_V2_DWO_SECTIONS]; | |
808 | const gdb_byte *offsets; | |
809 | const gdb_byte *sizes; | |
810 | } v2; | |
811 | } section_pool; | |
80626a55 DE |
812 | }; |
813 | ||
814 | /* Data for one DWP file. */ | |
815 | ||
816 | struct dwp_file | |
817 | { | |
400174b1 TT |
818 | dwp_file (const char *name_, gdb_bfd_ref_ptr &&abfd) |
819 | : name (name_), | |
820 | dbfd (std::move (abfd)) | |
821 | { | |
822 | } | |
823 | ||
80626a55 DE |
824 | /* Name of the file. */ |
825 | const char *name; | |
826 | ||
73869dc2 | 827 | /* File format version. */ |
400174b1 | 828 | int version = 0; |
73869dc2 | 829 | |
93417882 | 830 | /* The bfd. */ |
400174b1 | 831 | gdb_bfd_ref_ptr dbfd; |
80626a55 DE |
832 | |
833 | /* Section info for this file. */ | |
400174b1 | 834 | struct dwp_sections sections {}; |
80626a55 | 835 | |
57d63ce2 | 836 | /* Table of CUs in the file. */ |
400174b1 | 837 | const struct dwp_hash_table *cus = nullptr; |
80626a55 DE |
838 | |
839 | /* Table of TUs in the file. */ | |
400174b1 | 840 | const struct dwp_hash_table *tus = nullptr; |
80626a55 | 841 | |
19ac8c2e | 842 | /* Tables of loaded CUs/TUs. Each entry is a struct dwo_unit *. */ |
400174b1 TT |
843 | htab_t loaded_cus {}; |
844 | htab_t loaded_tus {}; | |
80626a55 | 845 | |
73869dc2 DE |
846 | /* Table to map ELF section numbers to their sections. |
847 | This is only needed for the DWP V1 file format. */ | |
400174b1 TT |
848 | unsigned int num_sections = 0; |
849 | asection **elf_sections = nullptr; | |
80626a55 DE |
850 | }; |
851 | ||
36586728 TT |
852 | /* This represents a '.dwz' file. */ |
853 | ||
854 | struct dwz_file | |
855 | { | |
7ff8cb8c TT |
856 | dwz_file (gdb_bfd_ref_ptr &&bfd) |
857 | : dwz_bfd (std::move (bfd)) | |
858 | { | |
859 | } | |
860 | ||
36586728 | 861 | /* A dwz file can only contain a few sections. */ |
7ff8cb8c TT |
862 | struct dwarf2_section_info abbrev {}; |
863 | struct dwarf2_section_info info {}; | |
864 | struct dwarf2_section_info str {}; | |
865 | struct dwarf2_section_info line {}; | |
866 | struct dwarf2_section_info macro {}; | |
867 | struct dwarf2_section_info gdb_index {}; | |
868 | struct dwarf2_section_info debug_names {}; | |
36586728 TT |
869 | |
870 | /* The dwz's BFD. */ | |
7ff8cb8c | 871 | gdb_bfd_ref_ptr dwz_bfd; |
87d6a7aa SM |
872 | |
873 | /* If we loaded the index from an external file, this contains the | |
874 | resources associated to the open file, memory mapping, etc. */ | |
875 | std::unique_ptr<index_cache_resource> index_cache_res; | |
36586728 TT |
876 | }; |
877 | ||
0963b4bd MS |
878 | /* Struct used to pass misc. parameters to read_die_and_children, et |
879 | al. which are used for both .debug_info and .debug_types dies. | |
880 | All parameters here are unchanging for the life of the call. This | |
dee91e82 | 881 | struct exists to abstract away the constant parameters of die reading. */ |
93311388 DE |
882 | |
883 | struct die_reader_specs | |
884 | { | |
a32a8923 | 885 | /* The bfd of die_section. */ |
93311388 DE |
886 | bfd* abfd; |
887 | ||
888 | /* The CU of the DIE we are parsing. */ | |
889 | struct dwarf2_cu *cu; | |
890 | ||
80626a55 | 891 | /* Non-NULL if reading a DWO file (including one packaged into a DWP). */ |
3019eac3 DE |
892 | struct dwo_file *dwo_file; |
893 | ||
dee91e82 | 894 | /* The section the die comes from. |
3019eac3 | 895 | This is either .debug_info or .debug_types, or the .dwo variants. */ |
dee91e82 DE |
896 | struct dwarf2_section_info *die_section; |
897 | ||
898 | /* die_section->buffer. */ | |
d521ce57 | 899 | const gdb_byte *buffer; |
f664829e DE |
900 | |
901 | /* The end of the buffer. */ | |
902 | const gdb_byte *buffer_end; | |
a2ce51a0 DE |
903 | |
904 | /* The value of the DW_AT_comp_dir attribute. */ | |
905 | const char *comp_dir; | |
685af9cd TT |
906 | |
907 | /* The abbreviation table to use when reading the DIEs. */ | |
908 | struct abbrev_table *abbrev_table; | |
93311388 DE |
909 | }; |
910 | ||
fd820528 | 911 | /* Type of function passed to init_cutu_and_read_dies, et.al. */ |
dee91e82 | 912 | typedef void (die_reader_func_ftype) (const struct die_reader_specs *reader, |
d521ce57 | 913 | const gdb_byte *info_ptr, |
dee91e82 DE |
914 | struct die_info *comp_unit_die, |
915 | int has_children, | |
916 | void *data); | |
917 | ||
ecfb656c PA |
918 | /* A 1-based directory index. This is a strong typedef to prevent |
919 | accidentally using a directory index as a 0-based index into an | |
920 | array/vector. */ | |
921 | enum class dir_index : unsigned int {}; | |
922 | ||
923 | /* Likewise, a 1-based file name index. */ | |
924 | enum class file_name_index : unsigned int {}; | |
925 | ||
52059ffd TT |
926 | struct file_entry |
927 | { | |
fff8551c PA |
928 | file_entry () = default; |
929 | ||
ecfb656c | 930 | file_entry (const char *name_, dir_index d_index_, |
fff8551c PA |
931 | unsigned int mod_time_, unsigned int length_) |
932 | : name (name_), | |
ecfb656c | 933 | d_index (d_index_), |
fff8551c PA |
934 | mod_time (mod_time_), |
935 | length (length_) | |
936 | {} | |
937 | ||
ecfb656c PA |
938 | /* Return the include directory at D_INDEX stored in LH. Returns |
939 | NULL if D_INDEX is out of bounds. */ | |
8c43009f PA |
940 | const char *include_dir (const line_header *lh) const; |
941 | ||
fff8551c PA |
942 | /* The file name. Note this is an observing pointer. The memory is |
943 | owned by debug_line_buffer. */ | |
944 | const char *name {}; | |
945 | ||
8c43009f | 946 | /* The directory index (1-based). */ |
ecfb656c | 947 | dir_index d_index {}; |
fff8551c PA |
948 | |
949 | unsigned int mod_time {}; | |
950 | ||
951 | unsigned int length {}; | |
952 | ||
953 | /* True if referenced by the Line Number Program. */ | |
954 | bool included_p {}; | |
955 | ||
83769d0b | 956 | /* The associated symbol table, if any. */ |
fff8551c | 957 | struct symtab *symtab {}; |
52059ffd TT |
958 | }; |
959 | ||
debd256d JB |
960 | /* The line number information for a compilation unit (found in the |
961 | .debug_line section) begins with a "statement program header", | |
962 | which contains the following information. */ | |
963 | struct line_header | |
964 | { | |
fff8551c PA |
965 | line_header () |
966 | : offset_in_dwz {} | |
967 | {} | |
968 | ||
969 | /* Add an entry to the include directory table. */ | |
970 | void add_include_dir (const char *include_dir); | |
971 | ||
972 | /* Add an entry to the file name table. */ | |
ecfb656c | 973 | void add_file_name (const char *name, dir_index d_index, |
fff8551c PA |
974 | unsigned int mod_time, unsigned int length); |
975 | ||
ecfb656c | 976 | /* Return the include dir at INDEX (1-based). Returns NULL if INDEX |
8c43009f | 977 | is out of bounds. */ |
ecfb656c | 978 | const char *include_dir_at (dir_index index) const |
8c43009f | 979 | { |
ecfb656c PA |
980 | /* Convert directory index number (1-based) to vector index |
981 | (0-based). */ | |
982 | size_t vec_index = to_underlying (index) - 1; | |
983 | ||
984 | if (vec_index >= include_dirs.size ()) | |
8c43009f | 985 | return NULL; |
ecfb656c | 986 | return include_dirs[vec_index]; |
8c43009f PA |
987 | } |
988 | ||
ecfb656c | 989 | /* Return the file name at INDEX (1-based). Returns NULL if INDEX |
8c43009f | 990 | is out of bounds. */ |
ecfb656c | 991 | file_entry *file_name_at (file_name_index index) |
8c43009f | 992 | { |
ecfb656c PA |
993 | /* Convert file name index number (1-based) to vector index |
994 | (0-based). */ | |
995 | size_t vec_index = to_underlying (index) - 1; | |
996 | ||
997 | if (vec_index >= file_names.size ()) | |
fff8551c | 998 | return NULL; |
ecfb656c | 999 | return &file_names[vec_index]; |
fff8551c PA |
1000 | } |
1001 | ||
1002 | /* Const version of the above. */ | |
1003 | const file_entry *file_name_at (unsigned int index) const | |
1004 | { | |
1005 | if (index >= file_names.size ()) | |
8c43009f PA |
1006 | return NULL; |
1007 | return &file_names[index]; | |
1008 | } | |
1009 | ||
527f3840 | 1010 | /* Offset of line number information in .debug_line section. */ |
9c541725 | 1011 | sect_offset sect_off {}; |
527f3840 JK |
1012 | |
1013 | /* OFFSET is for struct dwz_file associated with dwarf2_per_objfile. */ | |
fff8551c PA |
1014 | unsigned offset_in_dwz : 1; /* Can't initialize bitfields in-class. */ |
1015 | ||
1016 | unsigned int total_length {}; | |
1017 | unsigned short version {}; | |
1018 | unsigned int header_length {}; | |
1019 | unsigned char minimum_instruction_length {}; | |
1020 | unsigned char maximum_ops_per_instruction {}; | |
1021 | unsigned char default_is_stmt {}; | |
1022 | int line_base {}; | |
1023 | unsigned char line_range {}; | |
1024 | unsigned char opcode_base {}; | |
debd256d JB |
1025 | |
1026 | /* standard_opcode_lengths[i] is the number of operands for the | |
1027 | standard opcode whose value is i. This means that | |
1028 | standard_opcode_lengths[0] is unused, and the last meaningful | |
1029 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
fff8551c | 1030 | std::unique_ptr<unsigned char[]> standard_opcode_lengths; |
debd256d | 1031 | |
fff8551c PA |
1032 | /* The include_directories table. Note these are observing |
1033 | pointers. The memory is owned by debug_line_buffer. */ | |
1034 | std::vector<const char *> include_dirs; | |
debd256d | 1035 | |
fff8551c PA |
1036 | /* The file_names table. */ |
1037 | std::vector<file_entry> file_names; | |
debd256d JB |
1038 | |
1039 | /* The start and end of the statement program following this | |
6502dd73 | 1040 | header. These point into dwarf2_per_objfile->line_buffer. */ |
fff8551c | 1041 | const gdb_byte *statement_program_start {}, *statement_program_end {}; |
debd256d | 1042 | }; |
c906108c | 1043 | |
fff8551c PA |
1044 | typedef std::unique_ptr<line_header> line_header_up; |
1045 | ||
8c43009f PA |
1046 | const char * |
1047 | file_entry::include_dir (const line_header *lh) const | |
1048 | { | |
ecfb656c | 1049 | return lh->include_dir_at (d_index); |
8c43009f PA |
1050 | } |
1051 | ||
c906108c | 1052 | /* When we construct a partial symbol table entry we only |
0963b4bd | 1053 | need this much information. */ |
6f06d47b | 1054 | struct partial_die_info : public allocate_on_obstack |
c906108c | 1055 | { |
6f06d47b YQ |
1056 | partial_die_info (sect_offset sect_off, struct abbrev_info *abbrev); |
1057 | ||
1058 | /* Disable assign but still keep copy ctor, which is needed | |
1059 | load_partial_dies. */ | |
1060 | partial_die_info& operator=(const partial_die_info& rhs) = delete; | |
1061 | ||
52356b79 YQ |
1062 | /* Adjust the partial die before generating a symbol for it. This |
1063 | function may set the is_external flag or change the DIE's | |
1064 | name. */ | |
1065 | void fixup (struct dwarf2_cu *cu); | |
1066 | ||
48fbe735 YQ |
1067 | /* Read a minimal amount of information into the minimal die |
1068 | structure. */ | |
1069 | const gdb_byte *read (const struct die_reader_specs *reader, | |
1070 | const struct abbrev_info &abbrev, | |
1071 | const gdb_byte *info_ptr); | |
1072 | ||
72bf9492 | 1073 | /* Offset of this DIE. */ |
6f06d47b | 1074 | const sect_offset sect_off; |
72bf9492 DJ |
1075 | |
1076 | /* DWARF-2 tag for this DIE. */ | |
6f06d47b | 1077 | const ENUM_BITFIELD(dwarf_tag) tag : 16; |
72bf9492 | 1078 | |
72bf9492 | 1079 | /* Assorted flags describing the data found in this DIE. */ |
6f06d47b YQ |
1080 | const unsigned int has_children : 1; |
1081 | ||
72bf9492 DJ |
1082 | unsigned int is_external : 1; |
1083 | unsigned int is_declaration : 1; | |
1084 | unsigned int has_type : 1; | |
1085 | unsigned int has_specification : 1; | |
1086 | unsigned int has_pc_info : 1; | |
481860b3 | 1087 | unsigned int may_be_inlined : 1; |
72bf9492 | 1088 | |
0c1b455e TT |
1089 | /* This DIE has been marked DW_AT_main_subprogram. */ |
1090 | unsigned int main_subprogram : 1; | |
1091 | ||
72bf9492 DJ |
1092 | /* Flag set if the SCOPE field of this structure has been |
1093 | computed. */ | |
1094 | unsigned int scope_set : 1; | |
1095 | ||
fa4028e9 JB |
1096 | /* Flag set if the DIE has a byte_size attribute. */ |
1097 | unsigned int has_byte_size : 1; | |
1098 | ||
ff908ebf AW |
1099 | /* Flag set if the DIE has a DW_AT_const_value attribute. */ |
1100 | unsigned int has_const_value : 1; | |
1101 | ||
98bfdba5 PA |
1102 | /* Flag set if any of the DIE's children are template arguments. */ |
1103 | unsigned int has_template_arguments : 1; | |
1104 | ||
52356b79 | 1105 | /* Flag set if fixup has been called on this die. */ |
abc72ce4 DE |
1106 | unsigned int fixup_called : 1; |
1107 | ||
36586728 TT |
1108 | /* Flag set if DW_TAG_imported_unit uses DW_FORM_GNU_ref_alt. */ |
1109 | unsigned int is_dwz : 1; | |
1110 | ||
1111 | /* Flag set if spec_offset uses DW_FORM_GNU_ref_alt. */ | |
1112 | unsigned int spec_is_dwz : 1; | |
1113 | ||
72bf9492 | 1114 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 1115 | sometimes a default name for unnamed DIEs. */ |
6f06d47b | 1116 | const char *name = nullptr; |
72bf9492 | 1117 | |
abc72ce4 | 1118 | /* The linkage name, if present. */ |
6f06d47b | 1119 | const char *linkage_name = nullptr; |
abc72ce4 | 1120 | |
72bf9492 DJ |
1121 | /* The scope to prepend to our children. This is generally |
1122 | allocated on the comp_unit_obstack, so will disappear | |
1123 | when this compilation unit leaves the cache. */ | |
6f06d47b | 1124 | const char *scope = nullptr; |
72bf9492 | 1125 | |
95554aad TT |
1126 | /* Some data associated with the partial DIE. The tag determines |
1127 | which field is live. */ | |
1128 | union | |
1129 | { | |
1130 | /* The location description associated with this DIE, if any. */ | |
1131 | struct dwarf_block *locdesc; | |
1132 | /* The offset of an import, for DW_TAG_imported_unit. */ | |
9c541725 | 1133 | sect_offset sect_off; |
6f06d47b | 1134 | } d {}; |
72bf9492 DJ |
1135 | |
1136 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
6f06d47b YQ |
1137 | CORE_ADDR lowpc = 0; |
1138 | CORE_ADDR highpc = 0; | |
72bf9492 | 1139 | |
93311388 | 1140 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 1141 | DW_AT_sibling, if any. */ |
48fbe735 YQ |
1142 | /* NOTE: This member isn't strictly necessary, partial_die_info::read |
1143 | could return DW_AT_sibling values to its caller load_partial_dies. */ | |
6f06d47b | 1144 | const gdb_byte *sibling = nullptr; |
72bf9492 DJ |
1145 | |
1146 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
1147 | DW_AT_specification (or DW_AT_abstract_origin or | |
1148 | DW_AT_extension). */ | |
6f06d47b | 1149 | sect_offset spec_offset {}; |
72bf9492 DJ |
1150 | |
1151 | /* Pointers to this DIE's parent, first child, and next sibling, | |
1152 | if any. */ | |
6f06d47b YQ |
1153 | struct partial_die_info *die_parent = nullptr; |
1154 | struct partial_die_info *die_child = nullptr; | |
1155 | struct partial_die_info *die_sibling = nullptr; | |
1156 | ||
1157 | friend struct partial_die_info * | |
1158 | dwarf2_cu::find_partial_die (sect_offset sect_off); | |
1159 | ||
1160 | private: | |
1161 | /* Only need to do look up in dwarf2_cu::find_partial_die. */ | |
1162 | partial_die_info (sect_offset sect_off) | |
1163 | : partial_die_info (sect_off, DW_TAG_padding, 0) | |
1164 | { | |
1165 | } | |
1166 | ||
1167 | partial_die_info (sect_offset sect_off_, enum dwarf_tag tag_, | |
1168 | int has_children_) | |
1169 | : sect_off (sect_off_), tag (tag_), has_children (has_children_) | |
1170 | { | |
1171 | is_external = 0; | |
1172 | is_declaration = 0; | |
1173 | has_type = 0; | |
1174 | has_specification = 0; | |
1175 | has_pc_info = 0; | |
1176 | may_be_inlined = 0; | |
1177 | main_subprogram = 0; | |
1178 | scope_set = 0; | |
1179 | has_byte_size = 0; | |
1180 | has_const_value = 0; | |
1181 | has_template_arguments = 0; | |
1182 | fixup_called = 0; | |
1183 | is_dwz = 0; | |
1184 | spec_is_dwz = 0; | |
1185 | } | |
c906108c SS |
1186 | }; |
1187 | ||
0963b4bd | 1188 | /* This data structure holds the information of an abbrev. */ |
c906108c SS |
1189 | struct abbrev_info |
1190 | { | |
1191 | unsigned int number; /* number identifying abbrev */ | |
1192 | enum dwarf_tag tag; /* dwarf tag */ | |
f3dd6933 DJ |
1193 | unsigned short has_children; /* boolean */ |
1194 | unsigned short num_attrs; /* number of attributes */ | |
c906108c SS |
1195 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ |
1196 | struct abbrev_info *next; /* next in chain */ | |
1197 | }; | |
1198 | ||
1199 | struct attr_abbrev | |
1200 | { | |
9d25dd43 DE |
1201 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
1202 | ENUM_BITFIELD(dwarf_form) form : 16; | |
43988095 JK |
1203 | |
1204 | /* It is valid only if FORM is DW_FORM_implicit_const. */ | |
1205 | LONGEST implicit_const; | |
c906108c SS |
1206 | }; |
1207 | ||
433df2d4 DE |
1208 | /* Size of abbrev_table.abbrev_hash_table. */ |
1209 | #define ABBREV_HASH_SIZE 121 | |
1210 | ||
1211 | /* Top level data structure to contain an abbreviation table. */ | |
1212 | ||
1213 | struct abbrev_table | |
1214 | { | |
685af9cd TT |
1215 | explicit abbrev_table (sect_offset off) |
1216 | : sect_off (off) | |
1217 | { | |
4a17f768 | 1218 | m_abbrevs = |
685af9cd | 1219 | XOBNEWVEC (&abbrev_obstack, struct abbrev_info *, ABBREV_HASH_SIZE); |
4a17f768 | 1220 | memset (m_abbrevs, 0, ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); |
685af9cd TT |
1221 | } |
1222 | ||
1223 | DISABLE_COPY_AND_ASSIGN (abbrev_table); | |
1224 | ||
1225 | /* Allocate space for a struct abbrev_info object in | |
1226 | ABBREV_TABLE. */ | |
1227 | struct abbrev_info *alloc_abbrev (); | |
1228 | ||
1229 | /* Add an abbreviation to the table. */ | |
1230 | void add_abbrev (unsigned int abbrev_number, struct abbrev_info *abbrev); | |
1231 | ||
1232 | /* Look up an abbrev in the table. | |
1233 | Returns NULL if the abbrev is not found. */ | |
1234 | ||
1235 | struct abbrev_info *lookup_abbrev (unsigned int abbrev_number); | |
1236 | ||
1237 | ||
f4dc4d17 DE |
1238 | /* Where the abbrev table came from. |
1239 | This is used as a sanity check when the table is used. */ | |
685af9cd | 1240 | const sect_offset sect_off; |
433df2d4 DE |
1241 | |
1242 | /* Storage for the abbrev table. */ | |
685af9cd | 1243 | auto_obstack abbrev_obstack; |
433df2d4 | 1244 | |
4a17f768 YQ |
1245 | private: |
1246 | ||
433df2d4 DE |
1247 | /* Hash table of abbrevs. |
1248 | This is an array of size ABBREV_HASH_SIZE allocated in abbrev_obstack. | |
1249 | It could be statically allocated, but the previous code didn't so we | |
1250 | don't either. */ | |
4a17f768 | 1251 | struct abbrev_info **m_abbrevs; |
433df2d4 DE |
1252 | }; |
1253 | ||
685af9cd TT |
1254 | typedef std::unique_ptr<struct abbrev_table> abbrev_table_up; |
1255 | ||
0963b4bd | 1256 | /* Attributes have a name and a value. */ |
b60c80d6 DJ |
1257 | struct attribute |
1258 | { | |
9d25dd43 | 1259 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
8285870a JK |
1260 | ENUM_BITFIELD(dwarf_form) form : 15; |
1261 | ||
1262 | /* Has DW_STRING already been updated by dwarf2_canonicalize_name? This | |
1263 | field should be in u.str (existing only for DW_STRING) but it is kept | |
1264 | here for better struct attribute alignment. */ | |
1265 | unsigned int string_is_canonical : 1; | |
1266 | ||
b60c80d6 DJ |
1267 | union |
1268 | { | |
15d034d0 | 1269 | const char *str; |
b60c80d6 | 1270 | struct dwarf_block *blk; |
43bbcdc2 PH |
1271 | ULONGEST unsnd; |
1272 | LONGEST snd; | |
b60c80d6 | 1273 | CORE_ADDR addr; |
ac9ec31b | 1274 | ULONGEST signature; |
b60c80d6 DJ |
1275 | } |
1276 | u; | |
1277 | }; | |
1278 | ||
0963b4bd | 1279 | /* This data structure holds a complete die structure. */ |
c906108c SS |
1280 | struct die_info |
1281 | { | |
76815b17 DE |
1282 | /* DWARF-2 tag for this DIE. */ |
1283 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
1284 | ||
1285 | /* Number of attributes */ | |
98bfdba5 PA |
1286 | unsigned char num_attrs; |
1287 | ||
1288 | /* True if we're presently building the full type name for the | |
1289 | type derived from this DIE. */ | |
1290 | unsigned char building_fullname : 1; | |
76815b17 | 1291 | |
adde2bff DE |
1292 | /* True if this die is in process. PR 16581. */ |
1293 | unsigned char in_process : 1; | |
1294 | ||
76815b17 DE |
1295 | /* Abbrev number */ |
1296 | unsigned int abbrev; | |
1297 | ||
93311388 | 1298 | /* Offset in .debug_info or .debug_types section. */ |
9c541725 | 1299 | sect_offset sect_off; |
78ba4af6 JB |
1300 | |
1301 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
1302 | points to this die's parent; CHILD points to the first child of | |
1303 | this node; and all the children of a given node are chained | |
4950bc1c | 1304 | together via their SIBLING fields. */ |
639d11d3 DC |
1305 | struct die_info *child; /* Its first child, if any. */ |
1306 | struct die_info *sibling; /* Its next sibling, if any. */ | |
1307 | struct die_info *parent; /* Its parent, if any. */ | |
c906108c | 1308 | |
b60c80d6 DJ |
1309 | /* An array of attributes, with NUM_ATTRS elements. There may be |
1310 | zero, but it's not common and zero-sized arrays are not | |
1311 | sufficiently portable C. */ | |
1312 | struct attribute attrs[1]; | |
c906108c SS |
1313 | }; |
1314 | ||
0963b4bd | 1315 | /* Get at parts of an attribute structure. */ |
c906108c SS |
1316 | |
1317 | #define DW_STRING(attr) ((attr)->u.str) | |
8285870a | 1318 | #define DW_STRING_IS_CANONICAL(attr) ((attr)->string_is_canonical) |
c906108c SS |
1319 | #define DW_UNSND(attr) ((attr)->u.unsnd) |
1320 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
1321 | #define DW_SND(attr) ((attr)->u.snd) | |
1322 | #define DW_ADDR(attr) ((attr)->u.addr) | |
ac9ec31b | 1323 | #define DW_SIGNATURE(attr) ((attr)->u.signature) |
c906108c | 1324 | |
0963b4bd | 1325 | /* Blocks are a bunch of untyped bytes. */ |
c906108c SS |
1326 | struct dwarf_block |
1327 | { | |
56eb65bd | 1328 | size_t size; |
1d6edc3c JK |
1329 | |
1330 | /* Valid only if SIZE is not zero. */ | |
d521ce57 | 1331 | const gdb_byte *data; |
c906108c SS |
1332 | }; |
1333 | ||
c906108c SS |
1334 | #ifndef ATTR_ALLOC_CHUNK |
1335 | #define ATTR_ALLOC_CHUNK 4 | |
1336 | #endif | |
1337 | ||
c906108c SS |
1338 | /* Allocate fields for structs, unions and enums in this size. */ |
1339 | #ifndef DW_FIELD_ALLOC_CHUNK | |
1340 | #define DW_FIELD_ALLOC_CHUNK 4 | |
1341 | #endif | |
1342 | ||
c906108c SS |
1343 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
1344 | but this would require a corresponding change in unpack_field_as_long | |
1345 | and friends. */ | |
1346 | static int bits_per_byte = 8; | |
1347 | ||
2ddeaf8a TT |
1348 | /* When reading a variant or variant part, we track a bit more |
1349 | information about the field, and store it in an object of this | |
1350 | type. */ | |
1351 | ||
1352 | struct variant_field | |
1353 | { | |
1354 | /* If we see a DW_TAG_variant, then this will be the discriminant | |
1355 | value. */ | |
1356 | ULONGEST discriminant_value; | |
1357 | /* If we see a DW_TAG_variant, then this will be set if this is the | |
1358 | default branch. */ | |
1359 | bool default_branch; | |
1360 | /* While reading a DW_TAG_variant_part, this will be set if this | |
1361 | field is the discriminant. */ | |
1362 | bool is_discriminant; | |
1363 | }; | |
1364 | ||
52059ffd TT |
1365 | struct nextfield |
1366 | { | |
be2daae6 TT |
1367 | int accessibility = 0; |
1368 | int virtuality = 0; | |
2ddeaf8a | 1369 | /* Extra information to describe a variant or variant part. */ |
be2daae6 TT |
1370 | struct variant_field variant {}; |
1371 | struct field field {}; | |
52059ffd TT |
1372 | }; |
1373 | ||
1374 | struct fnfieldlist | |
1375 | { | |
be2daae6 TT |
1376 | const char *name = nullptr; |
1377 | std::vector<struct fn_field> fnfields; | |
52059ffd TT |
1378 | }; |
1379 | ||
c906108c SS |
1380 | /* The routines that read and process dies for a C struct or C++ class |
1381 | pass lists of data member fields and lists of member function fields | |
1382 | in an instance of a field_info structure, as defined below. */ | |
1383 | struct field_info | |
c5aa993b | 1384 | { |
0963b4bd | 1385 | /* List of data member and baseclasses fields. */ |
be2daae6 TT |
1386 | std::vector<struct nextfield> fields; |
1387 | std::vector<struct nextfield> baseclasses; | |
c906108c | 1388 | |
7d0ccb61 | 1389 | /* Number of fields (including baseclasses). */ |
be2daae6 | 1390 | int nfields = 0; |
c906108c | 1391 | |
c5aa993b | 1392 | /* Set if the accesibility of one of the fields is not public. */ |
be2daae6 | 1393 | int non_public_fields = 0; |
c906108c | 1394 | |
c5aa993b JM |
1395 | /* Member function fieldlist array, contains name of possibly overloaded |
1396 | member function, number of overloaded member functions and a pointer | |
1397 | to the head of the member function field chain. */ | |
be2daae6 | 1398 | std::vector<struct fnfieldlist> fnfieldlists; |
98751a41 JK |
1399 | |
1400 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
1401 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
be2daae6 | 1402 | std::vector<struct decl_field> typedef_field_list; |
883fd55a KS |
1403 | |
1404 | /* Nested types defined by this class and the number of elements in this | |
1405 | list. */ | |
be2daae6 | 1406 | std::vector<struct decl_field> nested_types_list; |
c5aa993b | 1407 | }; |
c906108c | 1408 | |
10b3939b DJ |
1409 | /* One item on the queue of compilation units to read in full symbols |
1410 | for. */ | |
1411 | struct dwarf2_queue_item | |
1412 | { | |
1413 | struct dwarf2_per_cu_data *per_cu; | |
95554aad | 1414 | enum language pretend_language; |
10b3939b DJ |
1415 | struct dwarf2_queue_item *next; |
1416 | }; | |
1417 | ||
1418 | /* The current queue. */ | |
1419 | static struct dwarf2_queue_item *dwarf2_queue, *dwarf2_queue_tail; | |
1420 | ||
ae038cb0 DJ |
1421 | /* Loaded secondary compilation units are kept in memory until they |
1422 | have not been referenced for the processing of this many | |
1423 | compilation units. Set this to zero to disable caching. Cache | |
1424 | sizes of up to at least twenty will improve startup time for | |
1425 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
b4f54984 | 1426 | static int dwarf_max_cache_age = 5; |
920d2a44 | 1427 | static void |
b4f54984 DE |
1428 | show_dwarf_max_cache_age (struct ui_file *file, int from_tty, |
1429 | struct cmd_list_element *c, const char *value) | |
920d2a44 | 1430 | { |
3e43a32a | 1431 | fprintf_filtered (file, _("The upper bound on the age of cached " |
b4f54984 | 1432 | "DWARF compilation units is %s.\n"), |
920d2a44 AC |
1433 | value); |
1434 | } | |
4390d890 | 1435 | \f |
c906108c SS |
1436 | /* local function prototypes */ |
1437 | ||
a32a8923 DE |
1438 | static const char *get_section_name (const struct dwarf2_section_info *); |
1439 | ||
1440 | static const char *get_section_file_name (const struct dwarf2_section_info *); | |
1441 | ||
918dd910 JK |
1442 | static void dwarf2_find_base_address (struct die_info *die, |
1443 | struct dwarf2_cu *cu); | |
1444 | ||
0018ea6f DE |
1445 | static struct partial_symtab *create_partial_symtab |
1446 | (struct dwarf2_per_cu_data *per_cu, const char *name); | |
1447 | ||
f1902523 JK |
1448 | static void build_type_psymtabs_reader (const struct die_reader_specs *reader, |
1449 | const gdb_byte *info_ptr, | |
1450 | struct die_info *type_unit_die, | |
1451 | int has_children, void *data); | |
1452 | ||
ed2dc618 SM |
1453 | static void dwarf2_build_psymtabs_hard |
1454 | (struct dwarf2_per_objfile *dwarf2_per_objfile); | |
c906108c | 1455 | |
72bf9492 DJ |
1456 | static void scan_partial_symbols (struct partial_die_info *, |
1457 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 1458 | int, struct dwarf2_cu *); |
c906108c | 1459 | |
72bf9492 DJ |
1460 | static void add_partial_symbol (struct partial_die_info *, |
1461 | struct dwarf2_cu *); | |
63d06c5c | 1462 | |
72bf9492 DJ |
1463 | static void add_partial_namespace (struct partial_die_info *pdi, |
1464 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 1465 | int set_addrmap, struct dwarf2_cu *cu); |
63d06c5c | 1466 | |
5d7cb8df | 1467 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
cdc07690 | 1468 | CORE_ADDR *highpc, int set_addrmap, |
5d7cb8df JK |
1469 | struct dwarf2_cu *cu); |
1470 | ||
72bf9492 DJ |
1471 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
1472 | struct dwarf2_cu *cu); | |
91c24f0a | 1473 | |
bc30ff58 JB |
1474 | static void add_partial_subprogram (struct partial_die_info *pdi, |
1475 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1476 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 1477 | |
257e7a09 YQ |
1478 | static void dwarf2_read_symtab (struct partial_symtab *, |
1479 | struct objfile *); | |
c906108c | 1480 | |
a14ed312 | 1481 | static void psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 1482 | |
685af9cd | 1483 | static abbrev_table_up abbrev_table_read_table |
ed2dc618 SM |
1484 | (struct dwarf2_per_objfile *dwarf2_per_objfile, struct dwarf2_section_info *, |
1485 | sect_offset); | |
433df2d4 | 1486 | |
d521ce57 | 1487 | static unsigned int peek_abbrev_code (bfd *, const gdb_byte *); |
6caca83c | 1488 | |
dee91e82 | 1489 | static struct partial_die_info *load_partial_dies |
d521ce57 | 1490 | (const struct die_reader_specs *, const gdb_byte *, int); |
72bf9492 | 1491 | |
36586728 | 1492 | static struct partial_die_info *find_partial_die (sect_offset, int, |
10b3939b | 1493 | struct dwarf2_cu *); |
72bf9492 | 1494 | |
d521ce57 TT |
1495 | static const gdb_byte *read_attribute (const struct die_reader_specs *, |
1496 | struct attribute *, struct attr_abbrev *, | |
1497 | const gdb_byte *); | |
a8329558 | 1498 | |
a1855c1d | 1499 | static unsigned int read_1_byte (bfd *, const gdb_byte *); |
c906108c | 1500 | |
a1855c1d | 1501 | static int read_1_signed_byte (bfd *, const gdb_byte *); |
c906108c | 1502 | |
a1855c1d | 1503 | static unsigned int read_2_bytes (bfd *, const gdb_byte *); |
c906108c | 1504 | |
a1855c1d | 1505 | static unsigned int read_4_bytes (bfd *, const gdb_byte *); |
c906108c | 1506 | |
a1855c1d | 1507 | static ULONGEST read_8_bytes (bfd *, const gdb_byte *); |
c906108c | 1508 | |
d521ce57 | 1509 | static CORE_ADDR read_address (bfd *, const gdb_byte *ptr, struct dwarf2_cu *, |
891d2f0b | 1510 | unsigned int *); |
c906108c | 1511 | |
d521ce57 | 1512 | static LONGEST read_initial_length (bfd *, const gdb_byte *, unsigned int *); |
c764a876 DE |
1513 | |
1514 | static LONGEST read_checked_initial_length_and_offset | |
d521ce57 | 1515 | (bfd *, const gdb_byte *, const struct comp_unit_head *, |
c764a876 | 1516 | unsigned int *, unsigned int *); |
613e1657 | 1517 | |
d521ce57 TT |
1518 | static LONGEST read_offset (bfd *, const gdb_byte *, |
1519 | const struct comp_unit_head *, | |
c764a876 DE |
1520 | unsigned int *); |
1521 | ||
d521ce57 | 1522 | static LONGEST read_offset_1 (bfd *, const gdb_byte *, unsigned int); |
613e1657 | 1523 | |
ed2dc618 SM |
1524 | static sect_offset read_abbrev_offset |
1525 | (struct dwarf2_per_objfile *dwarf2_per_objfile, | |
1526 | struct dwarf2_section_info *, sect_offset); | |
f4dc4d17 | 1527 | |
d521ce57 | 1528 | static const gdb_byte *read_n_bytes (bfd *, const gdb_byte *, unsigned int); |
c906108c | 1529 | |
d521ce57 | 1530 | static const char *read_direct_string (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1531 | |
ed2dc618 SM |
1532 | static const char *read_indirect_string |
1533 | (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *, const gdb_byte *, | |
1534 | const struct comp_unit_head *, unsigned int *); | |
4bdf3d34 | 1535 | |
ed2dc618 SM |
1536 | static const char *read_indirect_line_string |
1537 | (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *, const gdb_byte *, | |
1538 | const struct comp_unit_head *, unsigned int *); | |
36586728 | 1539 | |
ed2dc618 SM |
1540 | static const char *read_indirect_string_at_offset |
1541 | (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *abfd, | |
1542 | LONGEST str_offset); | |
927aa2e7 | 1543 | |
ed2dc618 SM |
1544 | static const char *read_indirect_string_from_dwz |
1545 | (struct objfile *objfile, struct dwz_file *, LONGEST); | |
c906108c | 1546 | |
d521ce57 | 1547 | static LONGEST read_signed_leb128 (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1548 | |
d521ce57 TT |
1549 | static CORE_ADDR read_addr_index_from_leb128 (struct dwarf2_cu *, |
1550 | const gdb_byte *, | |
3019eac3 DE |
1551 | unsigned int *); |
1552 | ||
d521ce57 | 1553 | static const char *read_str_index (const struct die_reader_specs *reader, |
342587c4 | 1554 | ULONGEST str_index); |
3019eac3 | 1555 | |
e142c38c | 1556 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 1557 | |
e142c38c DJ |
1558 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
1559 | struct dwarf2_cu *); | |
c906108c | 1560 | |
348e048f | 1561 | static struct attribute *dwarf2_attr_no_follow (struct die_info *, |
45e58e77 | 1562 | unsigned int); |
348e048f | 1563 | |
7d45c7c3 KB |
1564 | static const char *dwarf2_string_attr (struct die_info *die, unsigned int name, |
1565 | struct dwarf2_cu *cu); | |
1566 | ||
05cf31d1 JB |
1567 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
1568 | struct dwarf2_cu *cu); | |
1569 | ||
e142c38c | 1570 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1571 | |
e142c38c | 1572 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1573 | struct dwarf2_cu **); |
63d06c5c | 1574 | |
9c541725 | 1575 | static line_header_up dwarf_decode_line_header (sect_offset sect_off, |
fff8551c | 1576 | struct dwarf2_cu *cu); |
debd256d | 1577 | |
f3f5162e | 1578 | static void dwarf_decode_lines (struct line_header *, const char *, |
c3b7b696 | 1579 | struct dwarf2_cu *, struct partial_symtab *, |
527f3840 | 1580 | CORE_ADDR, int decode_mapping); |
c906108c | 1581 | |
804d2729 TT |
1582 | static void dwarf2_start_subfile (struct dwarf2_cu *, const char *, |
1583 | const char *); | |
c906108c | 1584 | |
43f3e411 DE |
1585 | static struct compunit_symtab *dwarf2_start_symtab (struct dwarf2_cu *, |
1586 | const char *, const char *, | |
1587 | CORE_ADDR); | |
f4dc4d17 | 1588 | |
a14ed312 | 1589 | static struct symbol *new_symbol (struct die_info *, struct type *, |
5e2db402 | 1590 | struct dwarf2_cu *, struct symbol * = NULL); |
34eaf542 | 1591 | |
ff39bb5e | 1592 | static void dwarf2_const_value (const struct attribute *, struct symbol *, |
e7c27a73 | 1593 | struct dwarf2_cu *); |
c906108c | 1594 | |
ff39bb5e | 1595 | static void dwarf2_const_value_attr (const struct attribute *attr, |
98bfdba5 PA |
1596 | struct type *type, |
1597 | const char *name, | |
1598 | struct obstack *obstack, | |
12df843f | 1599 | struct dwarf2_cu *cu, LONGEST *value, |
d521ce57 | 1600 | const gdb_byte **bytes, |
98bfdba5 | 1601 | struct dwarf2_locexpr_baton **baton); |
2df3850c | 1602 | |
e7c27a73 | 1603 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1604 | |
b4ba55a1 JB |
1605 | static int need_gnat_info (struct dwarf2_cu *); |
1606 | ||
3e43a32a MS |
1607 | static struct type *die_descriptive_type (struct die_info *, |
1608 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1609 | |
1610 | static void set_descriptive_type (struct type *, struct die_info *, | |
1611 | struct dwarf2_cu *); | |
1612 | ||
e7c27a73 DJ |
1613 | static struct type *die_containing_type (struct die_info *, |
1614 | struct dwarf2_cu *); | |
c906108c | 1615 | |
ff39bb5e | 1616 | static struct type *lookup_die_type (struct die_info *, const struct attribute *, |
673bfd45 | 1617 | struct dwarf2_cu *); |
c906108c | 1618 | |
f792889a | 1619 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1620 | |
673bfd45 DE |
1621 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1622 | ||
0d5cff50 | 1623 | static const char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1624 | |
6e70227d | 1625 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1626 | const char *suffix, int physname, |
1627 | struct dwarf2_cu *cu); | |
63d06c5c | 1628 | |
e7c27a73 | 1629 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1630 | |
348e048f DE |
1631 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1632 | ||
e7c27a73 | 1633 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1634 | |
e7c27a73 | 1635 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1636 | |
96408a79 SA |
1637 | static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu); |
1638 | ||
71a3c369 TT |
1639 | static void read_variable (struct die_info *die, struct dwarf2_cu *cu); |
1640 | ||
ff013f42 JK |
1641 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
1642 | struct dwarf2_cu *, struct partial_symtab *); | |
1643 | ||
3a2b436a | 1644 | /* How dwarf2_get_pc_bounds constructed its *LOWPC and *HIGHPC return |
e385593e | 1645 | values. Keep the items ordered with increasing constraints compliance. */ |
3a2b436a JK |
1646 | enum pc_bounds_kind |
1647 | { | |
e385593e | 1648 | /* No attribute DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges was found. */ |
3a2b436a JK |
1649 | PC_BOUNDS_NOT_PRESENT, |
1650 | ||
e385593e JK |
1651 | /* Some of the attributes DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges |
1652 | were present but they do not form a valid range of PC addresses. */ | |
1653 | PC_BOUNDS_INVALID, | |
1654 | ||
3a2b436a JK |
1655 | /* Discontiguous range was found - that is DW_AT_ranges was found. */ |
1656 | PC_BOUNDS_RANGES, | |
1657 | ||
1658 | /* Contiguous range was found - DW_AT_low_pc and DW_AT_high_pc were found. */ | |
1659 | PC_BOUNDS_HIGH_LOW, | |
1660 | }; | |
1661 | ||
1662 | static enum pc_bounds_kind dwarf2_get_pc_bounds (struct die_info *, | |
1663 | CORE_ADDR *, CORE_ADDR *, | |
1664 | struct dwarf2_cu *, | |
1665 | struct partial_symtab *); | |
c906108c | 1666 | |
fae299cd DC |
1667 | static void get_scope_pc_bounds (struct die_info *, |
1668 | CORE_ADDR *, CORE_ADDR *, | |
1669 | struct dwarf2_cu *); | |
1670 | ||
801e3a5b JB |
1671 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
1672 | CORE_ADDR, struct dwarf2_cu *); | |
1673 | ||
a14ed312 | 1674 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1675 | struct dwarf2_cu *); |
c906108c | 1676 | |
a14ed312 | 1677 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1678 | struct type *, struct dwarf2_cu *); |
c906108c | 1679 | |
a14ed312 | 1680 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1681 | struct die_info *, struct type *, |
e7c27a73 | 1682 | struct dwarf2_cu *); |
c906108c | 1683 | |
a14ed312 | 1684 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1685 | struct type *, |
1686 | struct dwarf2_cu *); | |
c906108c | 1687 | |
134d01f1 | 1688 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1689 | |
e7c27a73 | 1690 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1691 | |
e7c27a73 | 1692 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1693 | |
5d7cb8df JK |
1694 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1695 | ||
804d2729 | 1696 | static struct using_direct **using_directives (struct dwarf2_cu *cu); |
22cee43f | 1697 | |
27aa8d6a SW |
1698 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1699 | ||
74921315 KS |
1700 | static int read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu); |
1701 | ||
f55ee35c JK |
1702 | static struct type *read_module_type (struct die_info *die, |
1703 | struct dwarf2_cu *cu); | |
1704 | ||
38d518c9 | 1705 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1706 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1707 | |
134d01f1 | 1708 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1709 | |
e7c27a73 | 1710 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 1711 | |
6e70227d | 1712 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1713 | struct dwarf2_cu *); |
1714 | ||
bf6af496 | 1715 | static struct die_info *read_die_and_siblings_1 |
d521ce57 | 1716 | (const struct die_reader_specs *, const gdb_byte *, const gdb_byte **, |
bf6af496 | 1717 | struct die_info *); |
639d11d3 | 1718 | |
dee91e82 | 1719 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *, |
d521ce57 TT |
1720 | const gdb_byte *info_ptr, |
1721 | const gdb_byte **new_info_ptr, | |
639d11d3 DC |
1722 | struct die_info *parent); |
1723 | ||
d521ce57 TT |
1724 | static const gdb_byte *read_full_die_1 (const struct die_reader_specs *, |
1725 | struct die_info **, const gdb_byte *, | |
1726 | int *, int); | |
3019eac3 | 1727 | |
d521ce57 TT |
1728 | static const gdb_byte *read_full_die (const struct die_reader_specs *, |
1729 | struct die_info **, const gdb_byte *, | |
1730 | int *); | |
93311388 | 1731 | |
e7c27a73 | 1732 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1733 | |
15d034d0 TT |
1734 | static const char *dwarf2_canonicalize_name (const char *, struct dwarf2_cu *, |
1735 | struct obstack *); | |
71c25dea | 1736 | |
15d034d0 | 1737 | static const char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1738 | |
15d034d0 | 1739 | static const char *dwarf2_full_name (const char *name, |
98bfdba5 PA |
1740 | struct die_info *die, |
1741 | struct dwarf2_cu *cu); | |
1742 | ||
ca69b9e6 DE |
1743 | static const char *dwarf2_physname (const char *name, struct die_info *die, |
1744 | struct dwarf2_cu *cu); | |
1745 | ||
e142c38c | 1746 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1747 | struct dwarf2_cu **); |
9219021c | 1748 | |
f39c6ffd | 1749 | static const char *dwarf_tag_name (unsigned int); |
c906108c | 1750 | |
f39c6ffd | 1751 | static const char *dwarf_attr_name (unsigned int); |
c906108c | 1752 | |
f39c6ffd | 1753 | static const char *dwarf_form_name (unsigned int); |
c906108c | 1754 | |
a121b7c1 | 1755 | static const char *dwarf_bool_name (unsigned int); |
c906108c | 1756 | |
f39c6ffd | 1757 | static const char *dwarf_type_encoding_name (unsigned int); |
c906108c | 1758 | |
f9aca02d | 1759 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 1760 | |
d97bc12b DE |
1761 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1762 | ||
1763 | static void dump_die_for_error (struct die_info *); | |
1764 | ||
1765 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1766 | struct die_info *); | |
c906108c | 1767 | |
d97bc12b | 1768 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1769 | |
51545339 | 1770 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1771 | struct dwarf2_cu *); |
c906108c | 1772 | |
ff39bb5e | 1773 | static sect_offset dwarf2_get_ref_die_offset (const struct attribute *); |
c906108c | 1774 | |
ff39bb5e | 1775 | static LONGEST dwarf2_get_attr_constant_value (const struct attribute *, int); |
a02abb62 | 1776 | |
348e048f | 1777 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
ff39bb5e | 1778 | const struct attribute *, |
348e048f DE |
1779 | struct dwarf2_cu **); |
1780 | ||
10b3939b | 1781 | static struct die_info *follow_die_ref (struct die_info *, |
ff39bb5e | 1782 | const struct attribute *, |
f2f0e013 | 1783 | struct dwarf2_cu **); |
c906108c | 1784 | |
348e048f | 1785 | static struct die_info *follow_die_sig (struct die_info *, |
ff39bb5e | 1786 | const struct attribute *, |
348e048f DE |
1787 | struct dwarf2_cu **); |
1788 | ||
ac9ec31b DE |
1789 | static struct type *get_signatured_type (struct die_info *, ULONGEST, |
1790 | struct dwarf2_cu *); | |
1791 | ||
1792 | static struct type *get_DW_AT_signature_type (struct die_info *, | |
ff39bb5e | 1793 | const struct attribute *, |
ac9ec31b DE |
1794 | struct dwarf2_cu *); |
1795 | ||
e5fe5e75 | 1796 | static void load_full_type_unit (struct dwarf2_per_cu_data *per_cu); |
348e048f | 1797 | |
52dc124a | 1798 | static void read_signatured_type (struct signatured_type *); |
348e048f | 1799 | |
63e43d3a PMR |
1800 | static int attr_to_dynamic_prop (const struct attribute *attr, |
1801 | struct die_info *die, struct dwarf2_cu *cu, | |
1802 | struct dynamic_prop *prop); | |
1803 | ||
c906108c SS |
1804 | /* memory allocation interface */ |
1805 | ||
7b5a2f43 | 1806 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1807 | |
b60c80d6 | 1808 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1809 | |
43f3e411 | 1810 | static void dwarf_decode_macros (struct dwarf2_cu *, unsigned int, int); |
2e276125 | 1811 | |
6e5a29e1 | 1812 | static int attr_form_is_block (const struct attribute *); |
8e19ed76 | 1813 | |
6e5a29e1 | 1814 | static int attr_form_is_section_offset (const struct attribute *); |
3690dd37 | 1815 | |
6e5a29e1 | 1816 | static int attr_form_is_constant (const struct attribute *); |
3690dd37 | 1817 | |
6e5a29e1 | 1818 | static int attr_form_is_ref (const struct attribute *); |
7771576e | 1819 | |
8cf6f0b1 TT |
1820 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
1821 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 1822 | const struct attribute *attr); |
8cf6f0b1 | 1823 | |
ff39bb5e | 1824 | static void dwarf2_symbol_mark_computed (const struct attribute *attr, |
93e7bd98 | 1825 | struct symbol *sym, |
f1e6e072 TT |
1826 | struct dwarf2_cu *cu, |
1827 | int is_block); | |
4c2df51b | 1828 | |
d521ce57 TT |
1829 | static const gdb_byte *skip_one_die (const struct die_reader_specs *reader, |
1830 | const gdb_byte *info_ptr, | |
1831 | struct abbrev_info *abbrev); | |
4bb7a0a7 | 1832 | |
72bf9492 DJ |
1833 | static hashval_t partial_die_hash (const void *item); |
1834 | ||
1835 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1836 | ||
ae038cb0 | 1837 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
ed2dc618 SM |
1838 | (sect_offset sect_off, unsigned int offset_in_dwz, |
1839 | struct dwarf2_per_objfile *dwarf2_per_objfile); | |
ae038cb0 | 1840 | |
9816fde3 | 1841 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, |
95554aad TT |
1842 | struct die_info *comp_unit_die, |
1843 | enum language pretend_language); | |
93311388 | 1844 | |
ed2dc618 | 1845 | static void age_cached_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
ae038cb0 | 1846 | |
dee91e82 | 1847 | static void free_one_cached_comp_unit (struct dwarf2_per_cu_data *); |
ae038cb0 | 1848 | |
f792889a DJ |
1849 | static struct type *set_die_type (struct die_info *, struct type *, |
1850 | struct dwarf2_cu *); | |
1c379e20 | 1851 | |
ed2dc618 | 1852 | static void create_all_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
ae038cb0 | 1853 | |
ed2dc618 | 1854 | static int create_all_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
1fd400ff | 1855 | |
58f0c718 | 1856 | static void load_full_comp_unit (struct dwarf2_per_cu_data *, bool, |
95554aad | 1857 | enum language); |
10b3939b | 1858 | |
95554aad TT |
1859 | static void process_full_comp_unit (struct dwarf2_per_cu_data *, |
1860 | enum language); | |
10b3939b | 1861 | |
f4dc4d17 DE |
1862 | static void process_full_type_unit (struct dwarf2_per_cu_data *, |
1863 | enum language); | |
1864 | ||
10b3939b DJ |
1865 | static void dwarf2_add_dependence (struct dwarf2_cu *, |
1866 | struct dwarf2_per_cu_data *); | |
1867 | ||
ae038cb0 DJ |
1868 | static void dwarf2_mark (struct dwarf2_cu *); |
1869 | ||
1870 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1871 | ||
b64f50a1 | 1872 | static struct type *get_die_type_at_offset (sect_offset, |
ac9ec31b | 1873 | struct dwarf2_per_cu_data *); |
673bfd45 | 1874 | |
f792889a | 1875 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1876 | |
95554aad TT |
1877 | static void queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
1878 | enum language pretend_language); | |
1879 | ||
ed2dc618 | 1880 | static void process_queue (struct dwarf2_per_objfile *dwarf2_per_objfile); |
9291a0cd | 1881 | |
b303c6f6 AB |
1882 | /* Class, the destructor of which frees all allocated queue entries. This |
1883 | will only have work to do if an error was thrown while processing the | |
1884 | dwarf. If no error was thrown then the queue entries should have all | |
1885 | been processed, and freed, as we went along. */ | |
1886 | ||
1887 | class dwarf2_queue_guard | |
1888 | { | |
1889 | public: | |
1890 | dwarf2_queue_guard () = default; | |
1891 | ||
1892 | /* Free any entries remaining on the queue. There should only be | |
1893 | entries left if we hit an error while processing the dwarf. */ | |
1894 | ~dwarf2_queue_guard () | |
1895 | { | |
1896 | struct dwarf2_queue_item *item, *last; | |
1897 | ||
1898 | item = dwarf2_queue; | |
1899 | while (item) | |
1900 | { | |
1901 | /* Anything still marked queued is likely to be in an | |
1902 | inconsistent state, so discard it. */ | |
1903 | if (item->per_cu->queued) | |
1904 | { | |
1905 | if (item->per_cu->cu != NULL) | |
1906 | free_one_cached_comp_unit (item->per_cu); | |
1907 | item->per_cu->queued = 0; | |
1908 | } | |
1909 | ||
1910 | last = item; | |
1911 | item = item->next; | |
1912 | xfree (last); | |
1913 | } | |
1914 | ||
1915 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
1916 | } | |
1917 | }; | |
1918 | ||
d721ba37 PA |
1919 | /* The return type of find_file_and_directory. Note, the enclosed |
1920 | string pointers are only valid while this object is valid. */ | |
1921 | ||
1922 | struct file_and_directory | |
1923 | { | |
1924 | /* The filename. This is never NULL. */ | |
1925 | const char *name; | |
1926 | ||
1927 | /* The compilation directory. NULL if not known. If we needed to | |
1928 | compute a new string, this points to COMP_DIR_STORAGE, otherwise, | |
1929 | points directly to the DW_AT_comp_dir string attribute owned by | |
1930 | the obstack that owns the DIE. */ | |
1931 | const char *comp_dir; | |
1932 | ||
1933 | /* If we needed to build a new string for comp_dir, this is what | |
1934 | owns the storage. */ | |
1935 | std::string comp_dir_storage; | |
1936 | }; | |
1937 | ||
1938 | static file_and_directory find_file_and_directory (struct die_info *die, | |
1939 | struct dwarf2_cu *cu); | |
9291a0cd TT |
1940 | |
1941 | static char *file_full_name (int file, struct line_header *lh, | |
1942 | const char *comp_dir); | |
1943 | ||
43988095 JK |
1944 | /* Expected enum dwarf_unit_type for read_comp_unit_head. */ |
1945 | enum class rcuh_kind { COMPILE, TYPE }; | |
1946 | ||
d521ce57 | 1947 | static const gdb_byte *read_and_check_comp_unit_head |
ed2dc618 SM |
1948 | (struct dwarf2_per_objfile* dwarf2_per_objfile, |
1949 | struct comp_unit_head *header, | |
36586728 | 1950 | struct dwarf2_section_info *section, |
d521ce57 | 1951 | struct dwarf2_section_info *abbrev_section, const gdb_byte *info_ptr, |
43988095 | 1952 | rcuh_kind section_kind); |
36586728 | 1953 | |
fd820528 | 1954 | static void init_cutu_and_read_dies |
f4dc4d17 | 1955 | (struct dwarf2_per_cu_data *this_cu, struct abbrev_table *abbrev_table, |
58f0c718 | 1956 | int use_existing_cu, int keep, bool skip_partial, |
3019eac3 DE |
1957 | die_reader_func_ftype *die_reader_func, void *data); |
1958 | ||
dee91e82 DE |
1959 | static void init_cutu_and_read_dies_simple |
1960 | (struct dwarf2_per_cu_data *this_cu, | |
1961 | die_reader_func_ftype *die_reader_func, void *data); | |
9291a0cd | 1962 | |
673bfd45 | 1963 | static htab_t allocate_signatured_type_table (struct objfile *objfile); |
1fd400ff | 1964 | |
3019eac3 DE |
1965 | static htab_t allocate_dwo_unit_table (struct objfile *objfile); |
1966 | ||
57d63ce2 | 1967 | static struct dwo_unit *lookup_dwo_unit_in_dwp |
ed2dc618 SM |
1968 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
1969 | struct dwp_file *dwp_file, const char *comp_dir, | |
57d63ce2 | 1970 | ULONGEST signature, int is_debug_types); |
a2ce51a0 | 1971 | |
ed2dc618 SM |
1972 | static struct dwp_file *get_dwp_file |
1973 | (struct dwarf2_per_objfile *dwarf2_per_objfile); | |
a2ce51a0 | 1974 | |
3019eac3 | 1975 | static struct dwo_unit *lookup_dwo_comp_unit |
a1855c1d | 1976 | (struct dwarf2_per_cu_data *, const char *, const char *, ULONGEST); |
3019eac3 DE |
1977 | |
1978 | static struct dwo_unit *lookup_dwo_type_unit | |
a1855c1d | 1979 | (struct signatured_type *, const char *, const char *); |
3019eac3 | 1980 | |
89e63ee4 DE |
1981 | static void queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *); |
1982 | ||
263db9a1 | 1983 | static void free_dwo_file (struct dwo_file *); |
3019eac3 | 1984 | |
263db9a1 TT |
1985 | /* A unique_ptr helper to free a dwo_file. */ |
1986 | ||
1987 | struct dwo_file_deleter | |
ed2dc618 | 1988 | { |
263db9a1 TT |
1989 | void operator() (struct dwo_file *df) const |
1990 | { | |
1991 | free_dwo_file (df); | |
1992 | } | |
ed2dc618 SM |
1993 | }; |
1994 | ||
263db9a1 TT |
1995 | /* A unique pointer to a dwo_file. */ |
1996 | ||
1997 | typedef std::unique_ptr<struct dwo_file, dwo_file_deleter> dwo_file_up; | |
1998 | ||
ed2dc618 | 1999 | static void process_cu_includes (struct dwarf2_per_objfile *dwarf2_per_objfile); |
95554aad | 2000 | |
1b80a9fa | 2001 | static void check_producer (struct dwarf2_cu *cu); |
527f3840 JK |
2002 | |
2003 | static void free_line_header_voidp (void *arg); | |
4390d890 DE |
2004 | \f |
2005 | /* Various complaints about symbol reading that don't abort the process. */ | |
2006 | ||
2007 | static void | |
2008 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
2009 | { | |
b98664d3 | 2010 | complaint (_("statement list doesn't fit in .debug_line section")); |
4390d890 DE |
2011 | } |
2012 | ||
2013 | static void | |
2014 | dwarf2_debug_line_missing_file_complaint (void) | |
2015 | { | |
b98664d3 | 2016 | complaint (_(".debug_line section has line data without a file")); |
4390d890 DE |
2017 | } |
2018 | ||
2019 | static void | |
2020 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
2021 | { | |
b98664d3 | 2022 | complaint (_(".debug_line section has line " |
4390d890 DE |
2023 | "program sequence without an end")); |
2024 | } | |
2025 | ||
2026 | static void | |
2027 | dwarf2_complex_location_expr_complaint (void) | |
2028 | { | |
b98664d3 | 2029 | complaint (_("location expression too complex")); |
4390d890 DE |
2030 | } |
2031 | ||
2032 | static void | |
2033 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
2034 | int arg3) | |
2035 | { | |
b98664d3 | 2036 | complaint (_("const value length mismatch for '%s', got %d, expected %d"), |
4390d890 DE |
2037 | arg1, arg2, arg3); |
2038 | } | |
2039 | ||
2040 | static void | |
2041 | dwarf2_section_buffer_overflow_complaint (struct dwarf2_section_info *section) | |
2042 | { | |
b98664d3 | 2043 | complaint (_("debug info runs off end of %s section" |
4390d890 | 2044 | " [in module %s]"), |
a32a8923 DE |
2045 | get_section_name (section), |
2046 | get_section_file_name (section)); | |
4390d890 | 2047 | } |
1b80a9fa | 2048 | |
4390d890 DE |
2049 | static void |
2050 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
2051 | { | |
b98664d3 | 2052 | complaint (_("macro debug info contains a " |
4390d890 DE |
2053 | "malformed macro definition:\n`%s'"), |
2054 | arg1); | |
2055 | } | |
2056 | ||
2057 | static void | |
2058 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
2059 | { | |
b98664d3 | 2060 | complaint (_("invalid attribute class or form for '%s' in '%s'"), |
4390d890 DE |
2061 | arg1, arg2); |
2062 | } | |
527f3840 JK |
2063 | |
2064 | /* Hash function for line_header_hash. */ | |
2065 | ||
2066 | static hashval_t | |
2067 | line_header_hash (const struct line_header *ofs) | |
2068 | { | |
9c541725 | 2069 | return to_underlying (ofs->sect_off) ^ ofs->offset_in_dwz; |
527f3840 JK |
2070 | } |
2071 | ||
2072 | /* Hash function for htab_create_alloc_ex for line_header_hash. */ | |
2073 | ||
2074 | static hashval_t | |
2075 | line_header_hash_voidp (const void *item) | |
2076 | { | |
9a3c8263 | 2077 | const struct line_header *ofs = (const struct line_header *) item; |
527f3840 JK |
2078 | |
2079 | return line_header_hash (ofs); | |
2080 | } | |
2081 | ||
2082 | /* Equality function for line_header_hash. */ | |
2083 | ||
2084 | static int | |
2085 | line_header_eq_voidp (const void *item_lhs, const void *item_rhs) | |
2086 | { | |
9a3c8263 SM |
2087 | const struct line_header *ofs_lhs = (const struct line_header *) item_lhs; |
2088 | const struct line_header *ofs_rhs = (const struct line_header *) item_rhs; | |
527f3840 | 2089 | |
9c541725 | 2090 | return (ofs_lhs->sect_off == ofs_rhs->sect_off |
527f3840 JK |
2091 | && ofs_lhs->offset_in_dwz == ofs_rhs->offset_in_dwz); |
2092 | } | |
2093 | ||
4390d890 | 2094 | \f |
9291a0cd | 2095 | |
31aa7e4e JB |
2096 | /* Read the given attribute value as an address, taking the attribute's |
2097 | form into account. */ | |
2098 | ||
2099 | static CORE_ADDR | |
2100 | attr_value_as_address (struct attribute *attr) | |
2101 | { | |
2102 | CORE_ADDR addr; | |
2103 | ||
2104 | if (attr->form != DW_FORM_addr && attr->form != DW_FORM_GNU_addr_index) | |
2105 | { | |
2106 | /* Aside from a few clearly defined exceptions, attributes that | |
2107 | contain an address must always be in DW_FORM_addr form. | |
2108 | Unfortunately, some compilers happen to be violating this | |
2109 | requirement by encoding addresses using other forms, such | |
2110 | as DW_FORM_data4 for example. For those broken compilers, | |
2111 | we try to do our best, without any guarantee of success, | |
2112 | to interpret the address correctly. It would also be nice | |
2113 | to generate a complaint, but that would require us to maintain | |
2114 | a list of legitimate cases where a non-address form is allowed, | |
2115 | as well as update callers to pass in at least the CU's DWARF | |
2116 | version. This is more overhead than what we're willing to | |
2117 | expand for a pretty rare case. */ | |
2118 | addr = DW_UNSND (attr); | |
2119 | } | |
2120 | else | |
2121 | addr = DW_ADDR (attr); | |
2122 | ||
2123 | return addr; | |
2124 | } | |
2125 | ||
330cdd98 PA |
2126 | /* See declaration. */ |
2127 | ||
2128 | dwarf2_per_objfile::dwarf2_per_objfile (struct objfile *objfile_, | |
2129 | const dwarf2_debug_sections *names) | |
2130 | : objfile (objfile_) | |
2131 | { | |
2132 | if (names == NULL) | |
2133 | names = &dwarf2_elf_names; | |
2134 | ||
2135 | bfd *obfd = objfile->obfd; | |
2136 | ||
2137 | for (asection *sec = obfd->sections; sec != NULL; sec = sec->next) | |
2138 | locate_sections (obfd, sec, *names); | |
2139 | } | |
2140 | ||
fc8e7e75 SM |
2141 | static void free_dwo_files (htab_t dwo_files, struct objfile *objfile); |
2142 | ||
330cdd98 PA |
2143 | dwarf2_per_objfile::~dwarf2_per_objfile () |
2144 | { | |
2145 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
2146 | free_cached_comp_units (); | |
2147 | ||
2148 | if (quick_file_names_table) | |
2149 | htab_delete (quick_file_names_table); | |
2150 | ||
2151 | if (line_header_hash) | |
2152 | htab_delete (line_header_hash); | |
2153 | ||
b76e467d SM |
2154 | for (dwarf2_per_cu_data *per_cu : all_comp_units) |
2155 | VEC_free (dwarf2_per_cu_ptr, per_cu->imported_symtabs); | |
fc8e7e75 | 2156 | |
b2bdb8cf SM |
2157 | for (signatured_type *sig_type : all_type_units) |
2158 | VEC_free (dwarf2_per_cu_ptr, sig_type->per_cu.imported_symtabs); | |
fc8e7e75 SM |
2159 | |
2160 | VEC_free (dwarf2_section_info_def, types); | |
2161 | ||
2162 | if (dwo_files != NULL) | |
2163 | free_dwo_files (dwo_files, objfile); | |
fc8e7e75 | 2164 | |
330cdd98 PA |
2165 | /* Everything else should be on the objfile obstack. */ |
2166 | } | |
2167 | ||
2168 | /* See declaration. */ | |
2169 | ||
2170 | void | |
2171 | dwarf2_per_objfile::free_cached_comp_units () | |
2172 | { | |
2173 | dwarf2_per_cu_data *per_cu = read_in_chain; | |
2174 | dwarf2_per_cu_data **last_chain = &read_in_chain; | |
2175 | while (per_cu != NULL) | |
2176 | { | |
2177 | dwarf2_per_cu_data *next_cu = per_cu->cu->read_in_chain; | |
2178 | ||
fcd3b13d | 2179 | delete per_cu->cu; |
330cdd98 PA |
2180 | *last_chain = next_cu; |
2181 | per_cu = next_cu; | |
2182 | } | |
2183 | } | |
2184 | ||
11ed8cad TT |
2185 | /* A helper class that calls free_cached_comp_units on |
2186 | destruction. */ | |
2187 | ||
2188 | class free_cached_comp_units | |
2189 | { | |
2190 | public: | |
2191 | ||
2192 | explicit free_cached_comp_units (dwarf2_per_objfile *per_objfile) | |
2193 | : m_per_objfile (per_objfile) | |
2194 | { | |
2195 | } | |
2196 | ||
2197 | ~free_cached_comp_units () | |
2198 | { | |
2199 | m_per_objfile->free_cached_comp_units (); | |
2200 | } | |
2201 | ||
2202 | DISABLE_COPY_AND_ASSIGN (free_cached_comp_units); | |
2203 | ||
2204 | private: | |
2205 | ||
2206 | dwarf2_per_objfile *m_per_objfile; | |
2207 | }; | |
2208 | ||
c906108c | 2209 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
2210 | information and return true if we have enough to do something. |
2211 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
2212 | ELF names are used. */ | |
c906108c SS |
2213 | |
2214 | int | |
251d32d9 TG |
2215 | dwarf2_has_info (struct objfile *objfile, |
2216 | const struct dwarf2_debug_sections *names) | |
c906108c | 2217 | { |
97cbe998 SDJ |
2218 | if (objfile->flags & OBJF_READNEVER) |
2219 | return 0; | |
2220 | ||
ed2dc618 SM |
2221 | struct dwarf2_per_objfile *dwarf2_per_objfile |
2222 | = get_dwarf2_per_objfile (objfile); | |
2223 | ||
2224 | if (dwarf2_per_objfile == NULL) | |
be391dca TT |
2225 | { |
2226 | /* Initialize per-objfile state. */ | |
fd90ace4 YQ |
2227 | dwarf2_per_objfile |
2228 | = new (&objfile->objfile_obstack) struct dwarf2_per_objfile (objfile, | |
2229 | names); | |
ed2dc618 | 2230 | set_dwarf2_per_objfile (objfile, dwarf2_per_objfile); |
be391dca | 2231 | } |
73869dc2 | 2232 | return (!dwarf2_per_objfile->info.is_virtual |
049412e3 | 2233 | && dwarf2_per_objfile->info.s.section != NULL |
73869dc2 | 2234 | && !dwarf2_per_objfile->abbrev.is_virtual |
049412e3 | 2235 | && dwarf2_per_objfile->abbrev.s.section != NULL); |
73869dc2 DE |
2236 | } |
2237 | ||
2238 | /* Return the containing section of virtual section SECTION. */ | |
2239 | ||
2240 | static struct dwarf2_section_info * | |
2241 | get_containing_section (const struct dwarf2_section_info *section) | |
2242 | { | |
2243 | gdb_assert (section->is_virtual); | |
2244 | return section->s.containing_section; | |
c906108c SS |
2245 | } |
2246 | ||
a32a8923 DE |
2247 | /* Return the bfd owner of SECTION. */ |
2248 | ||
2249 | static struct bfd * | |
2250 | get_section_bfd_owner (const struct dwarf2_section_info *section) | |
2251 | { | |
73869dc2 DE |
2252 | if (section->is_virtual) |
2253 | { | |
2254 | section = get_containing_section (section); | |
2255 | gdb_assert (!section->is_virtual); | |
2256 | } | |
049412e3 | 2257 | return section->s.section->owner; |
a32a8923 DE |
2258 | } |
2259 | ||
2260 | /* Return the bfd section of SECTION. | |
2261 | Returns NULL if the section is not present. */ | |
2262 | ||
2263 | static asection * | |
2264 | get_section_bfd_section (const struct dwarf2_section_info *section) | |
2265 | { | |
73869dc2 DE |
2266 | if (section->is_virtual) |
2267 | { | |
2268 | section = get_containing_section (section); | |
2269 | gdb_assert (!section->is_virtual); | |
2270 | } | |
049412e3 | 2271 | return section->s.section; |
a32a8923 DE |
2272 | } |
2273 | ||
2274 | /* Return the name of SECTION. */ | |
2275 | ||
2276 | static const char * | |
2277 | get_section_name (const struct dwarf2_section_info *section) | |
2278 | { | |
2279 | asection *sectp = get_section_bfd_section (section); | |
2280 | ||
2281 | gdb_assert (sectp != NULL); | |
2282 | return bfd_section_name (get_section_bfd_owner (section), sectp); | |
2283 | } | |
2284 | ||
2285 | /* Return the name of the file SECTION is in. */ | |
2286 | ||
2287 | static const char * | |
2288 | get_section_file_name (const struct dwarf2_section_info *section) | |
2289 | { | |
2290 | bfd *abfd = get_section_bfd_owner (section); | |
2291 | ||
2292 | return bfd_get_filename (abfd); | |
2293 | } | |
2294 | ||
2295 | /* Return the id of SECTION. | |
2296 | Returns 0 if SECTION doesn't exist. */ | |
2297 | ||
2298 | static int | |
2299 | get_section_id (const struct dwarf2_section_info *section) | |
2300 | { | |
2301 | asection *sectp = get_section_bfd_section (section); | |
2302 | ||
2303 | if (sectp == NULL) | |
2304 | return 0; | |
2305 | return sectp->id; | |
2306 | } | |
2307 | ||
2308 | /* Return the flags of SECTION. | |
73869dc2 | 2309 | SECTION (or containing section if this is a virtual section) must exist. */ |
a32a8923 DE |
2310 | |
2311 | static int | |
2312 | get_section_flags (const struct dwarf2_section_info *section) | |
2313 | { | |
2314 | asection *sectp = get_section_bfd_section (section); | |
2315 | ||
2316 | gdb_assert (sectp != NULL); | |
2317 | return bfd_get_section_flags (sectp->owner, sectp); | |
2318 | } | |
2319 | ||
251d32d9 TG |
2320 | /* When loading sections, we look either for uncompressed section or for |
2321 | compressed section names. */ | |
233a11ab CS |
2322 | |
2323 | static int | |
251d32d9 TG |
2324 | section_is_p (const char *section_name, |
2325 | const struct dwarf2_section_names *names) | |
233a11ab | 2326 | { |
251d32d9 TG |
2327 | if (names->normal != NULL |
2328 | && strcmp (section_name, names->normal) == 0) | |
2329 | return 1; | |
2330 | if (names->compressed != NULL | |
2331 | && strcmp (section_name, names->compressed) == 0) | |
2332 | return 1; | |
2333 | return 0; | |
233a11ab CS |
2334 | } |
2335 | ||
330cdd98 | 2336 | /* See declaration. */ |
c906108c | 2337 | |
330cdd98 PA |
2338 | void |
2339 | dwarf2_per_objfile::locate_sections (bfd *abfd, asection *sectp, | |
2340 | const dwarf2_debug_sections &names) | |
c906108c | 2341 | { |
dc7650b8 | 2342 | flagword aflag = bfd_get_section_flags (abfd, sectp); |
251d32d9 | 2343 | |
dc7650b8 JK |
2344 | if ((aflag & SEC_HAS_CONTENTS) == 0) |
2345 | { | |
2346 | } | |
330cdd98 | 2347 | else if (section_is_p (sectp->name, &names.info)) |
c906108c | 2348 | { |
330cdd98 PA |
2349 | this->info.s.section = sectp; |
2350 | this->info.size = bfd_get_section_size (sectp); | |
c906108c | 2351 | } |
330cdd98 | 2352 | else if (section_is_p (sectp->name, &names.abbrev)) |
c906108c | 2353 | { |
330cdd98 PA |
2354 | this->abbrev.s.section = sectp; |
2355 | this->abbrev.size = bfd_get_section_size (sectp); | |
c906108c | 2356 | } |
330cdd98 | 2357 | else if (section_is_p (sectp->name, &names.line)) |
c906108c | 2358 | { |
330cdd98 PA |
2359 | this->line.s.section = sectp; |
2360 | this->line.size = bfd_get_section_size (sectp); | |
c906108c | 2361 | } |
330cdd98 | 2362 | else if (section_is_p (sectp->name, &names.loc)) |
c906108c | 2363 | { |
330cdd98 PA |
2364 | this->loc.s.section = sectp; |
2365 | this->loc.size = bfd_get_section_size (sectp); | |
c906108c | 2366 | } |
330cdd98 | 2367 | else if (section_is_p (sectp->name, &names.loclists)) |
43988095 | 2368 | { |
330cdd98 PA |
2369 | this->loclists.s.section = sectp; |
2370 | this->loclists.size = bfd_get_section_size (sectp); | |
43988095 | 2371 | } |
330cdd98 | 2372 | else if (section_is_p (sectp->name, &names.macinfo)) |
c906108c | 2373 | { |
330cdd98 PA |
2374 | this->macinfo.s.section = sectp; |
2375 | this->macinfo.size = bfd_get_section_size (sectp); | |
c906108c | 2376 | } |
330cdd98 | 2377 | else if (section_is_p (sectp->name, &names.macro)) |
cf2c3c16 | 2378 | { |
330cdd98 PA |
2379 | this->macro.s.section = sectp; |
2380 | this->macro.size = bfd_get_section_size (sectp); | |
cf2c3c16 | 2381 | } |
330cdd98 | 2382 | else if (section_is_p (sectp->name, &names.str)) |
c906108c | 2383 | { |
330cdd98 PA |
2384 | this->str.s.section = sectp; |
2385 | this->str.size = bfd_get_section_size (sectp); | |
c906108c | 2386 | } |
330cdd98 | 2387 | else if (section_is_p (sectp->name, &names.line_str)) |
43988095 | 2388 | { |
330cdd98 PA |
2389 | this->line_str.s.section = sectp; |
2390 | this->line_str.size = bfd_get_section_size (sectp); | |
43988095 | 2391 | } |
330cdd98 | 2392 | else if (section_is_p (sectp->name, &names.addr)) |
3019eac3 | 2393 | { |
330cdd98 PA |
2394 | this->addr.s.section = sectp; |
2395 | this->addr.size = bfd_get_section_size (sectp); | |
3019eac3 | 2396 | } |
330cdd98 | 2397 | else if (section_is_p (sectp->name, &names.frame)) |
b6af0555 | 2398 | { |
330cdd98 PA |
2399 | this->frame.s.section = sectp; |
2400 | this->frame.size = bfd_get_section_size (sectp); | |
b6af0555 | 2401 | } |
330cdd98 | 2402 | else if (section_is_p (sectp->name, &names.eh_frame)) |
b6af0555 | 2403 | { |
330cdd98 PA |
2404 | this->eh_frame.s.section = sectp; |
2405 | this->eh_frame.size = bfd_get_section_size (sectp); | |
b6af0555 | 2406 | } |
330cdd98 | 2407 | else if (section_is_p (sectp->name, &names.ranges)) |
af34e669 | 2408 | { |
330cdd98 PA |
2409 | this->ranges.s.section = sectp; |
2410 | this->ranges.size = bfd_get_section_size (sectp); | |
af34e669 | 2411 | } |
330cdd98 | 2412 | else if (section_is_p (sectp->name, &names.rnglists)) |
43988095 | 2413 | { |
330cdd98 PA |
2414 | this->rnglists.s.section = sectp; |
2415 | this->rnglists.size = bfd_get_section_size (sectp); | |
43988095 | 2416 | } |
330cdd98 | 2417 | else if (section_is_p (sectp->name, &names.types)) |
348e048f | 2418 | { |
8b70b953 TT |
2419 | struct dwarf2_section_info type_section; |
2420 | ||
2421 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 2422 | type_section.s.section = sectp; |
8b70b953 TT |
2423 | type_section.size = bfd_get_section_size (sectp); |
2424 | ||
330cdd98 | 2425 | VEC_safe_push (dwarf2_section_info_def, this->types, |
8b70b953 | 2426 | &type_section); |
348e048f | 2427 | } |
330cdd98 | 2428 | else if (section_is_p (sectp->name, &names.gdb_index)) |
9291a0cd | 2429 | { |
330cdd98 PA |
2430 | this->gdb_index.s.section = sectp; |
2431 | this->gdb_index.size = bfd_get_section_size (sectp); | |
9291a0cd | 2432 | } |
927aa2e7 JK |
2433 | else if (section_is_p (sectp->name, &names.debug_names)) |
2434 | { | |
2435 | this->debug_names.s.section = sectp; | |
2436 | this->debug_names.size = bfd_get_section_size (sectp); | |
2437 | } | |
2438 | else if (section_is_p (sectp->name, &names.debug_aranges)) | |
2439 | { | |
2440 | this->debug_aranges.s.section = sectp; | |
2441 | this->debug_aranges.size = bfd_get_section_size (sectp); | |
2442 | } | |
dce234bc | 2443 | |
b4e1fd61 | 2444 | if ((bfd_get_section_flags (abfd, sectp) & (SEC_LOAD | SEC_ALLOC)) |
72dca2f5 | 2445 | && bfd_section_vma (abfd, sectp) == 0) |
330cdd98 | 2446 | this->has_section_at_zero = true; |
c906108c SS |
2447 | } |
2448 | ||
fceca515 DE |
2449 | /* A helper function that decides whether a section is empty, |
2450 | or not present. */ | |
9e0ac564 TT |
2451 | |
2452 | static int | |
19ac8c2e | 2453 | dwarf2_section_empty_p (const struct dwarf2_section_info *section) |
9e0ac564 | 2454 | { |
73869dc2 DE |
2455 | if (section->is_virtual) |
2456 | return section->size == 0; | |
049412e3 | 2457 | return section->s.section == NULL || section->size == 0; |
9e0ac564 TT |
2458 | } |
2459 | ||
cd4fb1b2 | 2460 | /* See dwarf2read.h. */ |
c906108c | 2461 | |
cd4fb1b2 SM |
2462 | void |
2463 | dwarf2_read_section (struct objfile *objfile, dwarf2_section_info *info) | |
c906108c | 2464 | { |
a32a8923 | 2465 | asection *sectp; |
3019eac3 | 2466 | bfd *abfd; |
dce234bc | 2467 | gdb_byte *buf, *retbuf; |
c906108c | 2468 | |
be391dca TT |
2469 | if (info->readin) |
2470 | return; | |
dce234bc | 2471 | info->buffer = NULL; |
be391dca | 2472 | info->readin = 1; |
188dd5d6 | 2473 | |
9e0ac564 | 2474 | if (dwarf2_section_empty_p (info)) |
dce234bc | 2475 | return; |
c906108c | 2476 | |
a32a8923 | 2477 | sectp = get_section_bfd_section (info); |
3019eac3 | 2478 | |
73869dc2 DE |
2479 | /* If this is a virtual section we need to read in the real one first. */ |
2480 | if (info->is_virtual) | |
2481 | { | |
2482 | struct dwarf2_section_info *containing_section = | |
2483 | get_containing_section (info); | |
2484 | ||
2485 | gdb_assert (sectp != NULL); | |
2486 | if ((sectp->flags & SEC_RELOC) != 0) | |
2487 | { | |
2488 | error (_("Dwarf Error: DWP format V2 with relocations is not" | |
2489 | " supported in section %s [in module %s]"), | |
2490 | get_section_name (info), get_section_file_name (info)); | |
2491 | } | |
2492 | dwarf2_read_section (objfile, containing_section); | |
2493 | /* Other code should have already caught virtual sections that don't | |
2494 | fit. */ | |
2495 | gdb_assert (info->virtual_offset + info->size | |
2496 | <= containing_section->size); | |
2497 | /* If the real section is empty or there was a problem reading the | |
2498 | section we shouldn't get here. */ | |
2499 | gdb_assert (containing_section->buffer != NULL); | |
2500 | info->buffer = containing_section->buffer + info->virtual_offset; | |
2501 | return; | |
2502 | } | |
2503 | ||
4bf44c1c TT |
2504 | /* If the section has relocations, we must read it ourselves. |
2505 | Otherwise we attach it to the BFD. */ | |
2506 | if ((sectp->flags & SEC_RELOC) == 0) | |
dce234bc | 2507 | { |
d521ce57 | 2508 | info->buffer = gdb_bfd_map_section (sectp, &info->size); |
4bf44c1c | 2509 | return; |
dce234bc | 2510 | } |
dce234bc | 2511 | |
224c3ddb | 2512 | buf = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, info->size); |
4bf44c1c | 2513 | info->buffer = buf; |
dce234bc PP |
2514 | |
2515 | /* When debugging .o files, we may need to apply relocations; see | |
2516 | http://sourceware.org/ml/gdb-patches/2002-04/msg00136.html . | |
2517 | We never compress sections in .o files, so we only need to | |
2518 | try this when the section is not compressed. */ | |
ac8035ab | 2519 | retbuf = symfile_relocate_debug_section (objfile, sectp, buf); |
dce234bc PP |
2520 | if (retbuf != NULL) |
2521 | { | |
2522 | info->buffer = retbuf; | |
2523 | return; | |
2524 | } | |
2525 | ||
a32a8923 DE |
2526 | abfd = get_section_bfd_owner (info); |
2527 | gdb_assert (abfd != NULL); | |
2528 | ||
dce234bc PP |
2529 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 |
2530 | || bfd_bread (buf, info->size, abfd) != info->size) | |
19ac8c2e DE |
2531 | { |
2532 | error (_("Dwarf Error: Can't read DWARF data" | |
2533 | " in section %s [in module %s]"), | |
2534 | bfd_section_name (abfd, sectp), bfd_get_filename (abfd)); | |
2535 | } | |
dce234bc PP |
2536 | } |
2537 | ||
9e0ac564 TT |
2538 | /* A helper function that returns the size of a section in a safe way. |
2539 | If you are positive that the section has been read before using the | |
2540 | size, then it is safe to refer to the dwarf2_section_info object's | |
2541 | "size" field directly. In other cases, you must call this | |
2542 | function, because for compressed sections the size field is not set | |
2543 | correctly until the section has been read. */ | |
2544 | ||
2545 | static bfd_size_type | |
2546 | dwarf2_section_size (struct objfile *objfile, | |
2547 | struct dwarf2_section_info *info) | |
2548 | { | |
2549 | if (!info->readin) | |
2550 | dwarf2_read_section (objfile, info); | |
2551 | return info->size; | |
2552 | } | |
2553 | ||
dce234bc | 2554 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 2555 | SECTION_NAME. */ |
af34e669 | 2556 | |
dce234bc | 2557 | void |
3017a003 TG |
2558 | dwarf2_get_section_info (struct objfile *objfile, |
2559 | enum dwarf2_section_enum sect, | |
d521ce57 | 2560 | asection **sectp, const gdb_byte **bufp, |
dce234bc PP |
2561 | bfd_size_type *sizep) |
2562 | { | |
2563 | struct dwarf2_per_objfile *data | |
9a3c8263 SM |
2564 | = (struct dwarf2_per_objfile *) objfile_data (objfile, |
2565 | dwarf2_objfile_data_key); | |
dce234bc | 2566 | struct dwarf2_section_info *info; |
a3b2a86b TT |
2567 | |
2568 | /* We may see an objfile without any DWARF, in which case we just | |
2569 | return nothing. */ | |
2570 | if (data == NULL) | |
2571 | { | |
2572 | *sectp = NULL; | |
2573 | *bufp = NULL; | |
2574 | *sizep = 0; | |
2575 | return; | |
2576 | } | |
3017a003 TG |
2577 | switch (sect) |
2578 | { | |
2579 | case DWARF2_DEBUG_FRAME: | |
2580 | info = &data->frame; | |
2581 | break; | |
2582 | case DWARF2_EH_FRAME: | |
2583 | info = &data->eh_frame; | |
2584 | break; | |
2585 | default: | |
2586 | gdb_assert_not_reached ("unexpected section"); | |
2587 | } | |
dce234bc | 2588 | |
9e0ac564 | 2589 | dwarf2_read_section (objfile, info); |
dce234bc | 2590 | |
a32a8923 | 2591 | *sectp = get_section_bfd_section (info); |
dce234bc PP |
2592 | *bufp = info->buffer; |
2593 | *sizep = info->size; | |
2594 | } | |
2595 | ||
36586728 TT |
2596 | /* A helper function to find the sections for a .dwz file. */ |
2597 | ||
2598 | static void | |
2599 | locate_dwz_sections (bfd *abfd, asection *sectp, void *arg) | |
2600 | { | |
9a3c8263 | 2601 | struct dwz_file *dwz_file = (struct dwz_file *) arg; |
36586728 TT |
2602 | |
2603 | /* Note that we only support the standard ELF names, because .dwz | |
2604 | is ELF-only (at the time of writing). */ | |
2605 | if (section_is_p (sectp->name, &dwarf2_elf_names.abbrev)) | |
2606 | { | |
049412e3 | 2607 | dwz_file->abbrev.s.section = sectp; |
36586728 TT |
2608 | dwz_file->abbrev.size = bfd_get_section_size (sectp); |
2609 | } | |
2610 | else if (section_is_p (sectp->name, &dwarf2_elf_names.info)) | |
2611 | { | |
049412e3 | 2612 | dwz_file->info.s.section = sectp; |
36586728 TT |
2613 | dwz_file->info.size = bfd_get_section_size (sectp); |
2614 | } | |
2615 | else if (section_is_p (sectp->name, &dwarf2_elf_names.str)) | |
2616 | { | |
049412e3 | 2617 | dwz_file->str.s.section = sectp; |
36586728 TT |
2618 | dwz_file->str.size = bfd_get_section_size (sectp); |
2619 | } | |
2620 | else if (section_is_p (sectp->name, &dwarf2_elf_names.line)) | |
2621 | { | |
049412e3 | 2622 | dwz_file->line.s.section = sectp; |
36586728 TT |
2623 | dwz_file->line.size = bfd_get_section_size (sectp); |
2624 | } | |
2625 | else if (section_is_p (sectp->name, &dwarf2_elf_names.macro)) | |
2626 | { | |
049412e3 | 2627 | dwz_file->macro.s.section = sectp; |
36586728 TT |
2628 | dwz_file->macro.size = bfd_get_section_size (sectp); |
2629 | } | |
2ec9a5e0 TT |
2630 | else if (section_is_p (sectp->name, &dwarf2_elf_names.gdb_index)) |
2631 | { | |
049412e3 | 2632 | dwz_file->gdb_index.s.section = sectp; |
2ec9a5e0 TT |
2633 | dwz_file->gdb_index.size = bfd_get_section_size (sectp); |
2634 | } | |
927aa2e7 JK |
2635 | else if (section_is_p (sectp->name, &dwarf2_elf_names.debug_names)) |
2636 | { | |
2637 | dwz_file->debug_names.s.section = sectp; | |
2638 | dwz_file->debug_names.size = bfd_get_section_size (sectp); | |
2639 | } | |
36586728 TT |
2640 | } |
2641 | ||
4db1a1dc TT |
2642 | /* Open the separate '.dwz' debug file, if needed. Return NULL if |
2643 | there is no .gnu_debugaltlink section in the file. Error if there | |
2644 | is such a section but the file cannot be found. */ | |
36586728 TT |
2645 | |
2646 | static struct dwz_file * | |
ed2dc618 | 2647 | dwarf2_get_dwz_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
36586728 | 2648 | { |
36586728 | 2649 | const char *filename; |
acd13123 | 2650 | bfd_size_type buildid_len_arg; |
dc294be5 TT |
2651 | size_t buildid_len; |
2652 | bfd_byte *buildid; | |
36586728 TT |
2653 | |
2654 | if (dwarf2_per_objfile->dwz_file != NULL) | |
7ff8cb8c | 2655 | return dwarf2_per_objfile->dwz_file.get (); |
36586728 | 2656 | |
4db1a1dc | 2657 | bfd_set_error (bfd_error_no_error); |
791afaa2 TT |
2658 | gdb::unique_xmalloc_ptr<char> data |
2659 | (bfd_get_alt_debug_link_info (dwarf2_per_objfile->objfile->obfd, | |
2660 | &buildid_len_arg, &buildid)); | |
4db1a1dc TT |
2661 | if (data == NULL) |
2662 | { | |
2663 | if (bfd_get_error () == bfd_error_no_error) | |
2664 | return NULL; | |
2665 | error (_("could not read '.gnu_debugaltlink' section: %s"), | |
2666 | bfd_errmsg (bfd_get_error ())); | |
2667 | } | |
791afaa2 TT |
2668 | |
2669 | gdb::unique_xmalloc_ptr<bfd_byte> buildid_holder (buildid); | |
36586728 | 2670 | |
acd13123 TT |
2671 | buildid_len = (size_t) buildid_len_arg; |
2672 | ||
791afaa2 | 2673 | filename = data.get (); |
d721ba37 PA |
2674 | |
2675 | std::string abs_storage; | |
36586728 TT |
2676 | if (!IS_ABSOLUTE_PATH (filename)) |
2677 | { | |
14278e1f TT |
2678 | gdb::unique_xmalloc_ptr<char> abs |
2679 | = gdb_realpath (objfile_name (dwarf2_per_objfile->objfile)); | |
36586728 | 2680 | |
14278e1f | 2681 | abs_storage = ldirname (abs.get ()) + SLASH_STRING + filename; |
d721ba37 | 2682 | filename = abs_storage.c_str (); |
36586728 TT |
2683 | } |
2684 | ||
dc294be5 TT |
2685 | /* First try the file name given in the section. If that doesn't |
2686 | work, try to use the build-id instead. */ | |
192b62ce | 2687 | gdb_bfd_ref_ptr dwz_bfd (gdb_bfd_open (filename, gnutarget, -1)); |
dc294be5 | 2688 | if (dwz_bfd != NULL) |
36586728 | 2689 | { |
192b62ce TT |
2690 | if (!build_id_verify (dwz_bfd.get (), buildid_len, buildid)) |
2691 | dwz_bfd.release (); | |
36586728 TT |
2692 | } |
2693 | ||
dc294be5 TT |
2694 | if (dwz_bfd == NULL) |
2695 | dwz_bfd = build_id_to_debug_bfd (buildid_len, buildid); | |
2696 | ||
2697 | if (dwz_bfd == NULL) | |
2698 | error (_("could not find '.gnu_debugaltlink' file for %s"), | |
2699 | objfile_name (dwarf2_per_objfile->objfile)); | |
2700 | ||
7ff8cb8c TT |
2701 | std::unique_ptr<struct dwz_file> result |
2702 | (new struct dwz_file (std::move (dwz_bfd))); | |
36586728 | 2703 | |
7ff8cb8c TT |
2704 | bfd_map_over_sections (result->dwz_bfd.get (), locate_dwz_sections, |
2705 | result.get ()); | |
36586728 | 2706 | |
7ff8cb8c TT |
2707 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, |
2708 | result->dwz_bfd.get ()); | |
2709 | dwarf2_per_objfile->dwz_file = std::move (result); | |
2710 | return dwarf2_per_objfile->dwz_file.get (); | |
36586728 | 2711 | } |
9291a0cd | 2712 | \f |
7b9f3c50 DE |
2713 | /* DWARF quick_symbols_functions support. */ |
2714 | ||
2715 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
2716 | unique line tables, so we maintain a separate table of all .debug_line | |
2717 | derived entries to support the sharing. | |
2718 | All the quick functions need is the list of file names. We discard the | |
2719 | line_header when we're done and don't need to record it here. */ | |
2720 | struct quick_file_names | |
2721 | { | |
094b34ac DE |
2722 | /* The data used to construct the hash key. */ |
2723 | struct stmt_list_hash hash; | |
7b9f3c50 DE |
2724 | |
2725 | /* The number of entries in file_names, real_names. */ | |
2726 | unsigned int num_file_names; | |
2727 | ||
2728 | /* The file names from the line table, after being run through | |
2729 | file_full_name. */ | |
2730 | const char **file_names; | |
2731 | ||
2732 | /* The file names from the line table after being run through | |
2733 | gdb_realpath. These are computed lazily. */ | |
2734 | const char **real_names; | |
2735 | }; | |
2736 | ||
2737 | /* When using the index (and thus not using psymtabs), each CU has an | |
2738 | object of this type. This is used to hold information needed by | |
2739 | the various "quick" methods. */ | |
2740 | struct dwarf2_per_cu_quick_data | |
2741 | { | |
2742 | /* The file table. This can be NULL if there was no file table | |
2743 | or it's currently not read in. | |
2744 | NOTE: This points into dwarf2_per_objfile->quick_file_names_table. */ | |
2745 | struct quick_file_names *file_names; | |
2746 | ||
2747 | /* The corresponding symbol table. This is NULL if symbols for this | |
2748 | CU have not yet been read. */ | |
43f3e411 | 2749 | struct compunit_symtab *compunit_symtab; |
7b9f3c50 DE |
2750 | |
2751 | /* A temporary mark bit used when iterating over all CUs in | |
2752 | expand_symtabs_matching. */ | |
2753 | unsigned int mark : 1; | |
2754 | ||
2755 | /* True if we've tried to read the file table and found there isn't one. | |
2756 | There will be no point in trying to read it again next time. */ | |
2757 | unsigned int no_file_data : 1; | |
2758 | }; | |
2759 | ||
094b34ac DE |
2760 | /* Utility hash function for a stmt_list_hash. */ |
2761 | ||
2762 | static hashval_t | |
2763 | hash_stmt_list_entry (const struct stmt_list_hash *stmt_list_hash) | |
2764 | { | |
2765 | hashval_t v = 0; | |
2766 | ||
2767 | if (stmt_list_hash->dwo_unit != NULL) | |
2768 | v += (uintptr_t) stmt_list_hash->dwo_unit->dwo_file; | |
9c541725 | 2769 | v += to_underlying (stmt_list_hash->line_sect_off); |
094b34ac DE |
2770 | return v; |
2771 | } | |
2772 | ||
2773 | /* Utility equality function for a stmt_list_hash. */ | |
2774 | ||
2775 | static int | |
2776 | eq_stmt_list_entry (const struct stmt_list_hash *lhs, | |
2777 | const struct stmt_list_hash *rhs) | |
2778 | { | |
2779 | if ((lhs->dwo_unit != NULL) != (rhs->dwo_unit != NULL)) | |
2780 | return 0; | |
2781 | if (lhs->dwo_unit != NULL | |
2782 | && lhs->dwo_unit->dwo_file != rhs->dwo_unit->dwo_file) | |
2783 | return 0; | |
2784 | ||
9c541725 | 2785 | return lhs->line_sect_off == rhs->line_sect_off; |
094b34ac DE |
2786 | } |
2787 | ||
7b9f3c50 DE |
2788 | /* Hash function for a quick_file_names. */ |
2789 | ||
2790 | static hashval_t | |
2791 | hash_file_name_entry (const void *e) | |
2792 | { | |
9a3c8263 SM |
2793 | const struct quick_file_names *file_data |
2794 | = (const struct quick_file_names *) e; | |
7b9f3c50 | 2795 | |
094b34ac | 2796 | return hash_stmt_list_entry (&file_data->hash); |
7b9f3c50 DE |
2797 | } |
2798 | ||
2799 | /* Equality function for a quick_file_names. */ | |
2800 | ||
2801 | static int | |
2802 | eq_file_name_entry (const void *a, const void *b) | |
2803 | { | |
9a3c8263 SM |
2804 | const struct quick_file_names *ea = (const struct quick_file_names *) a; |
2805 | const struct quick_file_names *eb = (const struct quick_file_names *) b; | |
7b9f3c50 | 2806 | |
094b34ac | 2807 | return eq_stmt_list_entry (&ea->hash, &eb->hash); |
7b9f3c50 DE |
2808 | } |
2809 | ||
2810 | /* Delete function for a quick_file_names. */ | |
2811 | ||
2812 | static void | |
2813 | delete_file_name_entry (void *e) | |
2814 | { | |
9a3c8263 | 2815 | struct quick_file_names *file_data = (struct quick_file_names *) e; |
7b9f3c50 DE |
2816 | int i; |
2817 | ||
2818 | for (i = 0; i < file_data->num_file_names; ++i) | |
2819 | { | |
2820 | xfree ((void*) file_data->file_names[i]); | |
2821 | if (file_data->real_names) | |
2822 | xfree ((void*) file_data->real_names[i]); | |
2823 | } | |
2824 | ||
2825 | /* The space for the struct itself lives on objfile_obstack, | |
2826 | so we don't free it here. */ | |
2827 | } | |
2828 | ||
2829 | /* Create a quick_file_names hash table. */ | |
2830 | ||
2831 | static htab_t | |
2832 | create_quick_file_names_table (unsigned int nr_initial_entries) | |
2833 | { | |
2834 | return htab_create_alloc (nr_initial_entries, | |
2835 | hash_file_name_entry, eq_file_name_entry, | |
2836 | delete_file_name_entry, xcalloc, xfree); | |
2837 | } | |
9291a0cd | 2838 | |
918dd910 JK |
2839 | /* Read in PER_CU->CU. This function is unrelated to symtabs, symtab would |
2840 | have to be created afterwards. You should call age_cached_comp_units after | |
2841 | processing PER_CU->CU. dw2_setup must have been already called. */ | |
2842 | ||
2843 | static void | |
58f0c718 | 2844 | load_cu (struct dwarf2_per_cu_data *per_cu, bool skip_partial) |
918dd910 | 2845 | { |
3019eac3 | 2846 | if (per_cu->is_debug_types) |
e5fe5e75 | 2847 | load_full_type_unit (per_cu); |
918dd910 | 2848 | else |
58f0c718 | 2849 | load_full_comp_unit (per_cu, skip_partial, language_minimal); |
918dd910 | 2850 | |
cc12ce38 DE |
2851 | if (per_cu->cu == NULL) |
2852 | return; /* Dummy CU. */ | |
2dc860c0 DE |
2853 | |
2854 | dwarf2_find_base_address (per_cu->cu->dies, per_cu->cu); | |
918dd910 JK |
2855 | } |
2856 | ||
a0f42c21 | 2857 | /* Read in the symbols for PER_CU. */ |
2fdf6df6 | 2858 | |
9291a0cd | 2859 | static void |
58f0c718 | 2860 | dw2_do_instantiate_symtab (struct dwarf2_per_cu_data *per_cu, bool skip_partial) |
9291a0cd | 2861 | { |
ed2dc618 | 2862 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
9291a0cd | 2863 | |
f4dc4d17 DE |
2864 | /* Skip type_unit_groups, reading the type units they contain |
2865 | is handled elsewhere. */ | |
2866 | if (IS_TYPE_UNIT_GROUP (per_cu)) | |
2867 | return; | |
2868 | ||
b303c6f6 AB |
2869 | /* The destructor of dwarf2_queue_guard frees any entries left on |
2870 | the queue. After this point we're guaranteed to leave this function | |
2871 | with the dwarf queue empty. */ | |
2872 | dwarf2_queue_guard q_guard; | |
9291a0cd | 2873 | |
95554aad | 2874 | if (dwarf2_per_objfile->using_index |
43f3e411 | 2875 | ? per_cu->v.quick->compunit_symtab == NULL |
95554aad TT |
2876 | : (per_cu->v.psymtab == NULL || !per_cu->v.psymtab->readin)) |
2877 | { | |
2878 | queue_comp_unit (per_cu, language_minimal); | |
58f0c718 | 2879 | load_cu (per_cu, skip_partial); |
89e63ee4 DE |
2880 | |
2881 | /* If we just loaded a CU from a DWO, and we're working with an index | |
2882 | that may badly handle TUs, load all the TUs in that DWO as well. | |
2883 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
2884 | if (!per_cu->is_debug_types | |
cc12ce38 | 2885 | && per_cu->cu != NULL |
89e63ee4 DE |
2886 | && per_cu->cu->dwo_unit != NULL |
2887 | && dwarf2_per_objfile->index_table != NULL | |
2888 | && dwarf2_per_objfile->index_table->version <= 7 | |
2889 | /* DWP files aren't supported yet. */ | |
ed2dc618 | 2890 | && get_dwp_file (dwarf2_per_objfile) == NULL) |
89e63ee4 | 2891 | queue_and_load_all_dwo_tus (per_cu); |
95554aad | 2892 | } |
9291a0cd | 2893 | |
ed2dc618 | 2894 | process_queue (dwarf2_per_objfile); |
9291a0cd TT |
2895 | |
2896 | /* Age the cache, releasing compilation units that have not | |
2897 | been used recently. */ | |
ed2dc618 | 2898 | age_cached_comp_units (dwarf2_per_objfile); |
9291a0cd TT |
2899 | } |
2900 | ||
2901 | /* Ensure that the symbols for PER_CU have been read in. OBJFILE is | |
2902 | the objfile from which this CU came. Returns the resulting symbol | |
2903 | table. */ | |
2fdf6df6 | 2904 | |
43f3e411 | 2905 | static struct compunit_symtab * |
58f0c718 | 2906 | dw2_instantiate_symtab (struct dwarf2_per_cu_data *per_cu, bool skip_partial) |
9291a0cd | 2907 | { |
ed2dc618 SM |
2908 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
2909 | ||
95554aad | 2910 | gdb_assert (dwarf2_per_objfile->using_index); |
43f3e411 | 2911 | if (!per_cu->v.quick->compunit_symtab) |
9291a0cd | 2912 | { |
11ed8cad | 2913 | free_cached_comp_units freer (dwarf2_per_objfile); |
c83dd867 | 2914 | scoped_restore decrementer = increment_reading_symtab (); |
58f0c718 | 2915 | dw2_do_instantiate_symtab (per_cu, skip_partial); |
ed2dc618 | 2916 | process_cu_includes (dwarf2_per_objfile); |
9291a0cd | 2917 | } |
f194fefb | 2918 | |
43f3e411 | 2919 | return per_cu->v.quick->compunit_symtab; |
9291a0cd TT |
2920 | } |
2921 | ||
ff4c9fec | 2922 | /* See declaration. */ |
f4dc4d17 | 2923 | |
ff4c9fec SM |
2924 | dwarf2_per_cu_data * |
2925 | dwarf2_per_objfile::get_cutu (int index) | |
2926 | { | |
b76e467d | 2927 | if (index >= this->all_comp_units.size ()) |
ff4c9fec | 2928 | { |
b76e467d | 2929 | index -= this->all_comp_units.size (); |
b2bdb8cf | 2930 | gdb_assert (index < this->all_type_units.size ()); |
ff4c9fec SM |
2931 | return &this->all_type_units[index]->per_cu; |
2932 | } | |
f4dc4d17 | 2933 | |
ff4c9fec SM |
2934 | return this->all_comp_units[index]; |
2935 | } | |
f4dc4d17 | 2936 | |
ff4c9fec | 2937 | /* See declaration. */ |
2fdf6df6 | 2938 | |
ff4c9fec SM |
2939 | dwarf2_per_cu_data * |
2940 | dwarf2_per_objfile::get_cu (int index) | |
1fd400ff | 2941 | { |
b76e467d | 2942 | gdb_assert (index >= 0 && index < this->all_comp_units.size ()); |
f4dc4d17 | 2943 | |
ff4c9fec | 2944 | return this->all_comp_units[index]; |
f4dc4d17 DE |
2945 | } |
2946 | ||
ff4c9fec | 2947 | /* See declaration. */ |
f4dc4d17 | 2948 | |
ff4c9fec SM |
2949 | signatured_type * |
2950 | dwarf2_per_objfile::get_tu (int index) | |
f4dc4d17 | 2951 | { |
b2bdb8cf | 2952 | gdb_assert (index >= 0 && index < this->all_type_units.size ()); |
f4dc4d17 | 2953 | |
ff4c9fec | 2954 | return this->all_type_units[index]; |
1fd400ff TT |
2955 | } |
2956 | ||
4b514bc8 JK |
2957 | /* Return a new dwarf2_per_cu_data allocated on OBJFILE's |
2958 | objfile_obstack, and constructed with the specified field | |
2959 | values. */ | |
2960 | ||
2961 | static dwarf2_per_cu_data * | |
ed2dc618 | 2962 | create_cu_from_index_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
4b514bc8 JK |
2963 | struct dwarf2_section_info *section, |
2964 | int is_dwz, | |
2965 | sect_offset sect_off, ULONGEST length) | |
2966 | { | |
ed2dc618 | 2967 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
4b514bc8 JK |
2968 | dwarf2_per_cu_data *the_cu |
2969 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2970 | struct dwarf2_per_cu_data); | |
2971 | the_cu->sect_off = sect_off; | |
2972 | the_cu->length = length; | |
e3b94546 | 2973 | the_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
4b514bc8 JK |
2974 | the_cu->section = section; |
2975 | the_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2976 | struct dwarf2_per_cu_quick_data); | |
2977 | the_cu->is_dwz = is_dwz; | |
2978 | return the_cu; | |
2979 | } | |
2980 | ||
2ec9a5e0 TT |
2981 | /* A helper for create_cus_from_index that handles a given list of |
2982 | CUs. */ | |
2fdf6df6 | 2983 | |
74a0d9f6 | 2984 | static void |
12359b5e | 2985 | create_cus_from_index_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
2ec9a5e0 TT |
2986 | const gdb_byte *cu_list, offset_type n_elements, |
2987 | struct dwarf2_section_info *section, | |
b76e467d | 2988 | int is_dwz) |
9291a0cd | 2989 | { |
12359b5e | 2990 | for (offset_type i = 0; i < n_elements; i += 2) |
9291a0cd | 2991 | { |
74a0d9f6 | 2992 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
2993 | |
2994 | sect_offset sect_off | |
2995 | = (sect_offset) extract_unsigned_integer (cu_list, 8, BFD_ENDIAN_LITTLE); | |
2996 | ULONGEST length = extract_unsigned_integer (cu_list + 8, 8, BFD_ENDIAN_LITTLE); | |
9291a0cd TT |
2997 | cu_list += 2 * 8; |
2998 | ||
b76e467d | 2999 | dwarf2_per_cu_data *per_cu |
ed2dc618 SM |
3000 | = create_cu_from_index_list (dwarf2_per_objfile, section, is_dwz, |
3001 | sect_off, length); | |
b76e467d | 3002 | dwarf2_per_objfile->all_comp_units.push_back (per_cu); |
9291a0cd | 3003 | } |
9291a0cd TT |
3004 | } |
3005 | ||
2ec9a5e0 | 3006 | /* Read the CU list from the mapped index, and use it to create all |
74a0d9f6 | 3007 | the CU objects for this objfile. */ |
2ec9a5e0 | 3008 | |
74a0d9f6 | 3009 | static void |
12359b5e | 3010 | create_cus_from_index (struct dwarf2_per_objfile *dwarf2_per_objfile, |
2ec9a5e0 TT |
3011 | const gdb_byte *cu_list, offset_type cu_list_elements, |
3012 | const gdb_byte *dwz_list, offset_type dwz_elements) | |
3013 | { | |
b76e467d SM |
3014 | gdb_assert (dwarf2_per_objfile->all_comp_units.empty ()); |
3015 | dwarf2_per_objfile->all_comp_units.reserve | |
3016 | ((cu_list_elements + dwz_elements) / 2); | |
2ec9a5e0 | 3017 | |
12359b5e | 3018 | create_cus_from_index_list (dwarf2_per_objfile, cu_list, cu_list_elements, |
b76e467d | 3019 | &dwarf2_per_objfile->info, 0); |
2ec9a5e0 TT |
3020 | |
3021 | if (dwz_elements == 0) | |
74a0d9f6 | 3022 | return; |
2ec9a5e0 | 3023 | |
12359b5e SM |
3024 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
3025 | create_cus_from_index_list (dwarf2_per_objfile, dwz_list, dwz_elements, | |
b76e467d | 3026 | &dwz->info, 1); |
2ec9a5e0 TT |
3027 | } |
3028 | ||
1fd400ff | 3029 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 3030 | |
74a0d9f6 | 3031 | static void |
12359b5e SM |
3032 | create_signatured_type_table_from_index |
3033 | (struct dwarf2_per_objfile *dwarf2_per_objfile, | |
3034 | struct dwarf2_section_info *section, | |
3035 | const gdb_byte *bytes, | |
3036 | offset_type elements) | |
1fd400ff | 3037 | { |
12359b5e | 3038 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
1fd400ff | 3039 | |
b2bdb8cf SM |
3040 | gdb_assert (dwarf2_per_objfile->all_type_units.empty ()); |
3041 | dwarf2_per_objfile->all_type_units.reserve (elements / 3); | |
1fd400ff | 3042 | |
12359b5e | 3043 | htab_t sig_types_hash = allocate_signatured_type_table (objfile); |
1fd400ff | 3044 | |
12359b5e | 3045 | for (offset_type i = 0; i < elements; i += 3) |
1fd400ff | 3046 | { |
52dc124a | 3047 | struct signatured_type *sig_type; |
9c541725 | 3048 | ULONGEST signature; |
1fd400ff | 3049 | void **slot; |
9c541725 | 3050 | cu_offset type_offset_in_tu; |
1fd400ff | 3051 | |
74a0d9f6 | 3052 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
3053 | sect_offset sect_off |
3054 | = (sect_offset) extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
3055 | type_offset_in_tu | |
3056 | = (cu_offset) extract_unsigned_integer (bytes + 8, 8, | |
3057 | BFD_ENDIAN_LITTLE); | |
1fd400ff TT |
3058 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); |
3059 | bytes += 3 * 8; | |
3060 | ||
52dc124a | 3061 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
1fd400ff | 3062 | struct signatured_type); |
52dc124a | 3063 | sig_type->signature = signature; |
9c541725 | 3064 | sig_type->type_offset_in_tu = type_offset_in_tu; |
3019eac3 | 3065 | sig_type->per_cu.is_debug_types = 1; |
8a0459fd | 3066 | sig_type->per_cu.section = section; |
9c541725 | 3067 | sig_type->per_cu.sect_off = sect_off; |
e3b94546 | 3068 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
52dc124a | 3069 | sig_type->per_cu.v.quick |
1fd400ff TT |
3070 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
3071 | struct dwarf2_per_cu_quick_data); | |
3072 | ||
52dc124a DE |
3073 | slot = htab_find_slot (sig_types_hash, sig_type, INSERT); |
3074 | *slot = sig_type; | |
1fd400ff | 3075 | |
b2bdb8cf | 3076 | dwarf2_per_objfile->all_type_units.push_back (sig_type); |
1fd400ff TT |
3077 | } |
3078 | ||
673bfd45 | 3079 | dwarf2_per_objfile->signatured_types = sig_types_hash; |
1fd400ff TT |
3080 | } |
3081 | ||
927aa2e7 JK |
3082 | /* Create the signatured type hash table from .debug_names. */ |
3083 | ||
3084 | static void | |
3085 | create_signatured_type_table_from_debug_names | |
ed2dc618 | 3086 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
3087 | const mapped_debug_names &map, |
3088 | struct dwarf2_section_info *section, | |
3089 | struct dwarf2_section_info *abbrev_section) | |
3090 | { | |
ed2dc618 SM |
3091 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3092 | ||
927aa2e7 JK |
3093 | dwarf2_read_section (objfile, section); |
3094 | dwarf2_read_section (objfile, abbrev_section); | |
3095 | ||
b2bdb8cf SM |
3096 | gdb_assert (dwarf2_per_objfile->all_type_units.empty ()); |
3097 | dwarf2_per_objfile->all_type_units.reserve (map.tu_count); | |
927aa2e7 JK |
3098 | |
3099 | htab_t sig_types_hash = allocate_signatured_type_table (objfile); | |
3100 | ||
3101 | for (uint32_t i = 0; i < map.tu_count; ++i) | |
3102 | { | |
3103 | struct signatured_type *sig_type; | |
927aa2e7 | 3104 | void **slot; |
927aa2e7 JK |
3105 | |
3106 | sect_offset sect_off | |
3107 | = (sect_offset) (extract_unsigned_integer | |
3108 | (map.tu_table_reordered + i * map.offset_size, | |
3109 | map.offset_size, | |
3110 | map.dwarf5_byte_order)); | |
3111 | ||
3112 | comp_unit_head cu_header; | |
ed2dc618 SM |
3113 | read_and_check_comp_unit_head (dwarf2_per_objfile, &cu_header, section, |
3114 | abbrev_section, | |
927aa2e7 JK |
3115 | section->buffer + to_underlying (sect_off), |
3116 | rcuh_kind::TYPE); | |
3117 | ||
3118 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
3119 | struct signatured_type); | |
3120 | sig_type->signature = cu_header.signature; | |
3121 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
3122 | sig_type->per_cu.is_debug_types = 1; | |
3123 | sig_type->per_cu.section = section; | |
3124 | sig_type->per_cu.sect_off = sect_off; | |
e3b94546 | 3125 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
927aa2e7 JK |
3126 | sig_type->per_cu.v.quick |
3127 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
3128 | struct dwarf2_per_cu_quick_data); | |
3129 | ||
3130 | slot = htab_find_slot (sig_types_hash, sig_type, INSERT); | |
3131 | *slot = sig_type; | |
3132 | ||
b2bdb8cf | 3133 | dwarf2_per_objfile->all_type_units.push_back (sig_type); |
927aa2e7 JK |
3134 | } |
3135 | ||
3136 | dwarf2_per_objfile->signatured_types = sig_types_hash; | |
3137 | } | |
3138 | ||
9291a0cd TT |
3139 | /* Read the address map data from the mapped index, and use it to |
3140 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 3141 | |
9291a0cd | 3142 | static void |
ed2dc618 SM |
3143 | create_addrmap_from_index (struct dwarf2_per_objfile *dwarf2_per_objfile, |
3144 | struct mapped_index *index) | |
9291a0cd | 3145 | { |
ed2dc618 | 3146 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 3147 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9291a0cd | 3148 | const gdb_byte *iter, *end; |
9291a0cd | 3149 | struct addrmap *mutable_map; |
9291a0cd TT |
3150 | CORE_ADDR baseaddr; |
3151 | ||
8268c778 PA |
3152 | auto_obstack temp_obstack; |
3153 | ||
9291a0cd TT |
3154 | mutable_map = addrmap_create_mutable (&temp_obstack); |
3155 | ||
f00a2de2 PA |
3156 | iter = index->address_table.data (); |
3157 | end = iter + index->address_table.size (); | |
9291a0cd TT |
3158 | |
3159 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
3160 | ||
3161 | while (iter < end) | |
3162 | { | |
3163 | ULONGEST hi, lo, cu_index; | |
3164 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
3165 | iter += 8; | |
3166 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
3167 | iter += 8; | |
3168 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
3169 | iter += 4; | |
f652bce2 | 3170 | |
24a55014 | 3171 | if (lo > hi) |
f652bce2 | 3172 | { |
b98664d3 | 3173 | complaint (_(".gdb_index address table has invalid range (%s - %s)"), |
c0cd8254 | 3174 | hex_string (lo), hex_string (hi)); |
24a55014 | 3175 | continue; |
f652bce2 | 3176 | } |
24a55014 | 3177 | |
b76e467d | 3178 | if (cu_index >= dwarf2_per_objfile->all_comp_units.size ()) |
f652bce2 | 3179 | { |
b98664d3 | 3180 | complaint (_(".gdb_index address table has invalid CU number %u"), |
f652bce2 | 3181 | (unsigned) cu_index); |
24a55014 | 3182 | continue; |
f652bce2 | 3183 | } |
24a55014 | 3184 | |
79748972 TT |
3185 | lo = gdbarch_adjust_dwarf2_addr (gdbarch, lo + baseaddr) - baseaddr; |
3186 | hi = gdbarch_adjust_dwarf2_addr (gdbarch, hi + baseaddr) - baseaddr; | |
ed2dc618 | 3187 | addrmap_set_empty (mutable_map, lo, hi - 1, |
ff4c9fec | 3188 | dwarf2_per_objfile->get_cu (cu_index)); |
9291a0cd TT |
3189 | } |
3190 | ||
3191 | objfile->psymtabs_addrmap = addrmap_create_fixed (mutable_map, | |
3192 | &objfile->objfile_obstack); | |
9291a0cd TT |
3193 | } |
3194 | ||
927aa2e7 JK |
3195 | /* Read the address map data from DWARF-5 .debug_aranges, and use it to |
3196 | populate the objfile's psymtabs_addrmap. */ | |
3197 | ||
3198 | static void | |
ed2dc618 | 3199 | create_addrmap_from_aranges (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
3200 | struct dwarf2_section_info *section) |
3201 | { | |
ed2dc618 | 3202 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
927aa2e7 JK |
3203 | bfd *abfd = objfile->obfd; |
3204 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
3205 | const CORE_ADDR baseaddr = ANOFFSET (objfile->section_offsets, | |
3206 | SECT_OFF_TEXT (objfile)); | |
3207 | ||
3208 | auto_obstack temp_obstack; | |
3209 | addrmap *mutable_map = addrmap_create_mutable (&temp_obstack); | |
3210 | ||
3211 | std::unordered_map<sect_offset, | |
3212 | dwarf2_per_cu_data *, | |
3213 | gdb::hash_enum<sect_offset>> | |
3214 | debug_info_offset_to_per_cu; | |
b76e467d | 3215 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 3216 | { |
927aa2e7 JK |
3217 | const auto insertpair |
3218 | = debug_info_offset_to_per_cu.emplace (per_cu->sect_off, per_cu); | |
3219 | if (!insertpair.second) | |
3220 | { | |
3221 | warning (_("Section .debug_aranges in %s has duplicate " | |
9d8780f0 SM |
3222 | "debug_info_offset %s, ignoring .debug_aranges."), |
3223 | objfile_name (objfile), sect_offset_str (per_cu->sect_off)); | |
927aa2e7 JK |
3224 | return; |
3225 | } | |
3226 | } | |
3227 | ||
3228 | dwarf2_read_section (objfile, section); | |
3229 | ||
3230 | const bfd_endian dwarf5_byte_order = gdbarch_byte_order (gdbarch); | |
3231 | ||
3232 | const gdb_byte *addr = section->buffer; | |
3233 | ||
3234 | while (addr < section->buffer + section->size) | |
3235 | { | |
3236 | const gdb_byte *const entry_addr = addr; | |
3237 | unsigned int bytes_read; | |
3238 | ||
3239 | const LONGEST entry_length = read_initial_length (abfd, addr, | |
3240 | &bytes_read); | |
3241 | addr += bytes_read; | |
3242 | ||
3243 | const gdb_byte *const entry_end = addr + entry_length; | |
3244 | const bool dwarf5_is_dwarf64 = bytes_read != 4; | |
3245 | const uint8_t offset_size = dwarf5_is_dwarf64 ? 8 : 4; | |
3246 | if (addr + entry_length > section->buffer + section->size) | |
3247 | { | |
3248 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3249 | "length %s exceeds section length %s, " | |
3250 | "ignoring .debug_aranges."), | |
3251 | objfile_name (objfile), entry_addr - section->buffer, | |
3252 | plongest (bytes_read + entry_length), | |
3253 | pulongest (section->size)); | |
3254 | return; | |
3255 | } | |
3256 | ||
3257 | /* The version number. */ | |
3258 | const uint16_t version = read_2_bytes (abfd, addr); | |
3259 | addr += 2; | |
3260 | if (version != 2) | |
3261 | { | |
3262 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3263 | "has unsupported version %d, ignoring .debug_aranges."), | |
3264 | objfile_name (objfile), entry_addr - section->buffer, | |
3265 | version); | |
3266 | return; | |
3267 | } | |
3268 | ||
3269 | const uint64_t debug_info_offset | |
3270 | = extract_unsigned_integer (addr, offset_size, dwarf5_byte_order); | |
3271 | addr += offset_size; | |
3272 | const auto per_cu_it | |
3273 | = debug_info_offset_to_per_cu.find (sect_offset (debug_info_offset)); | |
3274 | if (per_cu_it == debug_info_offset_to_per_cu.cend ()) | |
3275 | { | |
3276 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3277 | "debug_info_offset %s does not exists, " | |
3278 | "ignoring .debug_aranges."), | |
3279 | objfile_name (objfile), entry_addr - section->buffer, | |
3280 | pulongest (debug_info_offset)); | |
3281 | return; | |
3282 | } | |
3283 | dwarf2_per_cu_data *const per_cu = per_cu_it->second; | |
3284 | ||
3285 | const uint8_t address_size = *addr++; | |
3286 | if (address_size < 1 || address_size > 8) | |
3287 | { | |
3288 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3289 | "address_size %u is invalid, ignoring .debug_aranges."), | |
3290 | objfile_name (objfile), entry_addr - section->buffer, | |
3291 | address_size); | |
3292 | return; | |
3293 | } | |
3294 | ||
3295 | const uint8_t segment_selector_size = *addr++; | |
3296 | if (segment_selector_size != 0) | |
3297 | { | |
3298 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3299 | "segment_selector_size %u is not supported, " | |
3300 | "ignoring .debug_aranges."), | |
3301 | objfile_name (objfile), entry_addr - section->buffer, | |
3302 | segment_selector_size); | |
3303 | return; | |
3304 | } | |
3305 | ||
3306 | /* Must pad to an alignment boundary that is twice the address | |
3307 | size. It is undocumented by the DWARF standard but GCC does | |
3308 | use it. */ | |
3309 | for (size_t padding = ((-(addr - section->buffer)) | |
3310 | & (2 * address_size - 1)); | |
3311 | padding > 0; padding--) | |
3312 | if (*addr++ != 0) | |
3313 | { | |
3314 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3315 | "padding is not zero, ignoring .debug_aranges."), | |
3316 | objfile_name (objfile), entry_addr - section->buffer); | |
3317 | return; | |
3318 | } | |
3319 | ||
3320 | for (;;) | |
3321 | { | |
3322 | if (addr + 2 * address_size > entry_end) | |
3323 | { | |
3324 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3325 | "address list is not properly terminated, " | |
3326 | "ignoring .debug_aranges."), | |
3327 | objfile_name (objfile), entry_addr - section->buffer); | |
3328 | return; | |
3329 | } | |
3330 | ULONGEST start = extract_unsigned_integer (addr, address_size, | |
3331 | dwarf5_byte_order); | |
3332 | addr += address_size; | |
3333 | ULONGEST length = extract_unsigned_integer (addr, address_size, | |
3334 | dwarf5_byte_order); | |
3335 | addr += address_size; | |
3336 | if (start == 0 && length == 0) | |
3337 | break; | |
3338 | if (start == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
3339 | { | |
3340 | /* Symbol was eliminated due to a COMDAT group. */ | |
3341 | continue; | |
3342 | } | |
3343 | ULONGEST end = start + length; | |
79748972 TT |
3344 | start = (gdbarch_adjust_dwarf2_addr (gdbarch, start + baseaddr) |
3345 | - baseaddr); | |
3346 | end = (gdbarch_adjust_dwarf2_addr (gdbarch, end + baseaddr) | |
3347 | - baseaddr); | |
927aa2e7 JK |
3348 | addrmap_set_empty (mutable_map, start, end - 1, per_cu); |
3349 | } | |
3350 | } | |
3351 | ||
3352 | objfile->psymtabs_addrmap = addrmap_create_fixed (mutable_map, | |
3353 | &objfile->objfile_obstack); | |
3354 | } | |
3355 | ||
9291a0cd TT |
3356 | /* Find a slot in the mapped index INDEX for the object named NAME. |
3357 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
109483d9 PA |
3358 | constant pool and return true. If NAME cannot be found, return |
3359 | false. */ | |
2fdf6df6 | 3360 | |
109483d9 | 3361 | static bool |
9291a0cd TT |
3362 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, |
3363 | offset_type **vec_out) | |
3364 | { | |
0cf03b49 | 3365 | offset_type hash; |
9291a0cd | 3366 | offset_type slot, step; |
559a7a62 | 3367 | int (*cmp) (const char *, const char *); |
9291a0cd | 3368 | |
791afaa2 | 3369 | gdb::unique_xmalloc_ptr<char> without_params; |
0cf03b49 | 3370 | if (current_language->la_language == language_cplus |
45280282 IB |
3371 | || current_language->la_language == language_fortran |
3372 | || current_language->la_language == language_d) | |
0cf03b49 JK |
3373 | { |
3374 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
3375 | not contain any. */ | |
a8719064 | 3376 | |
72998fb3 | 3377 | if (strchr (name, '(') != NULL) |
0cf03b49 | 3378 | { |
109483d9 | 3379 | without_params = cp_remove_params (name); |
0cf03b49 | 3380 | |
72998fb3 | 3381 | if (without_params != NULL) |
791afaa2 | 3382 | name = without_params.get (); |
0cf03b49 JK |
3383 | } |
3384 | } | |
3385 | ||
559a7a62 | 3386 | /* Index version 4 did not support case insensitive searches. But the |
feea76c2 | 3387 | indices for case insensitive languages are built in lowercase, therefore |
559a7a62 JK |
3388 | simulate our NAME being searched is also lowercased. */ |
3389 | hash = mapped_index_string_hash ((index->version == 4 | |
3390 | && case_sensitivity == case_sensitive_off | |
3391 | ? 5 : index->version), | |
3392 | name); | |
3393 | ||
f00a2de2 PA |
3394 | slot = hash & (index->symbol_table.size () - 1); |
3395 | step = ((hash * 17) & (index->symbol_table.size () - 1)) | 1; | |
559a7a62 | 3396 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
3397 | |
3398 | for (;;) | |
3399 | { | |
9291a0cd | 3400 | const char *str; |
f00a2de2 PA |
3401 | |
3402 | const auto &bucket = index->symbol_table[slot]; | |
3403 | if (bucket.name == 0 && bucket.vec == 0) | |
109483d9 | 3404 | return false; |
9291a0cd | 3405 | |
f00a2de2 | 3406 | str = index->constant_pool + MAYBE_SWAP (bucket.name); |
559a7a62 | 3407 | if (!cmp (name, str)) |
9291a0cd TT |
3408 | { |
3409 | *vec_out = (offset_type *) (index->constant_pool | |
f00a2de2 | 3410 | + MAYBE_SWAP (bucket.vec)); |
109483d9 | 3411 | return true; |
9291a0cd TT |
3412 | } |
3413 | ||
f00a2de2 | 3414 | slot = (slot + step) & (index->symbol_table.size () - 1); |
9291a0cd TT |
3415 | } |
3416 | } | |
3417 | ||
4485a1c1 SM |
3418 | /* A helper function that reads the .gdb_index from BUFFER and fills |
3419 | in MAP. FILENAME is the name of the file containing the data; | |
d33bc52e | 3420 | it is used for error reporting. DEPRECATED_OK is true if it is |
2ec9a5e0 TT |
3421 | ok to use deprecated sections. |
3422 | ||
3423 | CU_LIST, CU_LIST_ELEMENTS, TYPES_LIST, and TYPES_LIST_ELEMENTS are | |
3424 | out parameters that are filled in with information about the CU and | |
3425 | TU lists in the section. | |
3426 | ||
4485a1c1 | 3427 | Returns true if all went well, false otherwise. */ |
2fdf6df6 | 3428 | |
d33bc52e | 3429 | static bool |
4485a1c1 SM |
3430 | read_gdb_index_from_buffer (struct objfile *objfile, |
3431 | const char *filename, | |
3432 | bool deprecated_ok, | |
3433 | gdb::array_view<const gdb_byte> buffer, | |
3434 | struct mapped_index *map, | |
3435 | const gdb_byte **cu_list, | |
3436 | offset_type *cu_list_elements, | |
3437 | const gdb_byte **types_list, | |
3438 | offset_type *types_list_elements) | |
3439 | { | |
3440 | const gdb_byte *addr = &buffer[0]; | |
82430852 | 3441 | |
9291a0cd | 3442 | /* Version check. */ |
4485a1c1 | 3443 | offset_type version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 3444 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 3445 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 3446 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 3447 | indices. */ |
831adc1f | 3448 | if (version < 4) |
481860b3 GB |
3449 | { |
3450 | static int warning_printed = 0; | |
3451 | if (!warning_printed) | |
3452 | { | |
3453 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2ec9a5e0 | 3454 | filename); |
481860b3 GB |
3455 | warning_printed = 1; |
3456 | } | |
3457 | return 0; | |
3458 | } | |
3459 | /* Index version 4 uses a different hash function than index version | |
3460 | 5 and later. | |
3461 | ||
3462 | Versions earlier than 6 did not emit psymbols for inlined | |
3463 | functions. Using these files will cause GDB not to be able to | |
3464 | set breakpoints on inlined functions by name, so we ignore these | |
e615022a DE |
3465 | indices unless the user has done |
3466 | "set use-deprecated-index-sections on". */ | |
2ec9a5e0 | 3467 | if (version < 6 && !deprecated_ok) |
481860b3 GB |
3468 | { |
3469 | static int warning_printed = 0; | |
3470 | if (!warning_printed) | |
3471 | { | |
e615022a DE |
3472 | warning (_("\ |
3473 | Skipping deprecated .gdb_index section in %s.\n\ | |
3474 | Do \"set use-deprecated-index-sections on\" before the file is read\n\ | |
3475 | to use the section anyway."), | |
2ec9a5e0 | 3476 | filename); |
481860b3 GB |
3477 | warning_printed = 1; |
3478 | } | |
3479 | return 0; | |
3480 | } | |
796a7ff8 | 3481 | /* Version 7 indices generated by gold refer to the CU for a symbol instead |
8943b874 DE |
3482 | of the TU (for symbols coming from TUs), |
3483 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. | |
3484 | Plus gold-generated indices can have duplicate entries for global symbols, | |
3485 | http://sourceware.org/bugzilla/show_bug.cgi?id=15646. | |
3486 | These are just performance bugs, and we can't distinguish gdb-generated | |
3487 | indices from gold-generated ones, so issue no warning here. */ | |
796a7ff8 | 3488 | |
481860b3 | 3489 | /* Indexes with higher version than the one supported by GDB may be no |
594e8718 | 3490 | longer backward compatible. */ |
796a7ff8 | 3491 | if (version > 8) |
594e8718 | 3492 | return 0; |
9291a0cd | 3493 | |
559a7a62 | 3494 | map->version = version; |
9291a0cd | 3495 | |
4485a1c1 | 3496 | offset_type *metadata = (offset_type *) (addr + sizeof (offset_type)); |
1fd400ff | 3497 | |
4485a1c1 | 3498 | int i = 0; |
2ec9a5e0 TT |
3499 | *cu_list = addr + MAYBE_SWAP (metadata[i]); |
3500 | *cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
3501 | / 8); | |
1fd400ff TT |
3502 | ++i; |
3503 | ||
2ec9a5e0 TT |
3504 | *types_list = addr + MAYBE_SWAP (metadata[i]); |
3505 | *types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
3506 | - MAYBE_SWAP (metadata[i])) | |
3507 | / 8); | |
987d643c | 3508 | ++i; |
1fd400ff | 3509 | |
f00a2de2 PA |
3510 | const gdb_byte *address_table = addr + MAYBE_SWAP (metadata[i]); |
3511 | const gdb_byte *address_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
3512 | map->address_table | |
3513 | = gdb::array_view<const gdb_byte> (address_table, address_table_end); | |
1fd400ff TT |
3514 | ++i; |
3515 | ||
f00a2de2 PA |
3516 | const gdb_byte *symbol_table = addr + MAYBE_SWAP (metadata[i]); |
3517 | const gdb_byte *symbol_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
3518 | map->symbol_table | |
3519 | = gdb::array_view<mapped_index::symbol_table_slot> | |
3520 | ((mapped_index::symbol_table_slot *) symbol_table, | |
3521 | (mapped_index::symbol_table_slot *) symbol_table_end); | |
9291a0cd | 3522 | |
f00a2de2 | 3523 | ++i; |
f9d83a0b | 3524 | map->constant_pool = (char *) (addr + MAYBE_SWAP (metadata[i])); |
1fd400ff | 3525 | |
2ec9a5e0 TT |
3526 | return 1; |
3527 | } | |
3528 | ||
4485a1c1 SM |
3529 | /* Callback types for dwarf2_read_gdb_index. */ |
3530 | ||
3531 | typedef gdb::function_view | |
3532 | <gdb::array_view<const gdb_byte>(objfile *, dwarf2_per_objfile *)> | |
3533 | get_gdb_index_contents_ftype; | |
3534 | typedef gdb::function_view | |
3535 | <gdb::array_view<const gdb_byte>(objfile *, dwz_file *)> | |
3536 | get_gdb_index_contents_dwz_ftype; | |
3537 | ||
927aa2e7 | 3538 | /* Read .gdb_index. If everything went ok, initialize the "quick" |
2ec9a5e0 TT |
3539 | elements of all the CUs and return 1. Otherwise, return 0. */ |
3540 | ||
3541 | static int | |
4485a1c1 SM |
3542 | dwarf2_read_gdb_index |
3543 | (struct dwarf2_per_objfile *dwarf2_per_objfile, | |
3544 | get_gdb_index_contents_ftype get_gdb_index_contents, | |
3545 | get_gdb_index_contents_dwz_ftype get_gdb_index_contents_dwz) | |
2ec9a5e0 | 3546 | { |
2ec9a5e0 TT |
3547 | const gdb_byte *cu_list, *types_list, *dwz_list = NULL; |
3548 | offset_type cu_list_elements, types_list_elements, dwz_list_elements = 0; | |
4db1a1dc | 3549 | struct dwz_file *dwz; |
12359b5e | 3550 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
2ec9a5e0 | 3551 | |
4485a1c1 SM |
3552 | gdb::array_view<const gdb_byte> main_index_contents |
3553 | = get_gdb_index_contents (objfile, dwarf2_per_objfile); | |
3554 | ||
3555 | if (main_index_contents.empty ()) | |
3556 | return 0; | |
3557 | ||
3063847f | 3558 | std::unique_ptr<struct mapped_index> map (new struct mapped_index); |
4485a1c1 SM |
3559 | if (!read_gdb_index_from_buffer (objfile, objfile_name (objfile), |
3560 | use_deprecated_index_sections, | |
3561 | main_index_contents, map.get (), &cu_list, | |
3562 | &cu_list_elements, &types_list, | |
3563 | &types_list_elements)) | |
2ec9a5e0 TT |
3564 | return 0; |
3565 | ||
0fefef59 | 3566 | /* Don't use the index if it's empty. */ |
3063847f | 3567 | if (map->symbol_table.empty ()) |
0fefef59 DE |
3568 | return 0; |
3569 | ||
2ec9a5e0 TT |
3570 | /* If there is a .dwz file, read it so we can get its CU list as |
3571 | well. */ | |
ed2dc618 | 3572 | dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
4db1a1dc | 3573 | if (dwz != NULL) |
2ec9a5e0 | 3574 | { |
2ec9a5e0 TT |
3575 | struct mapped_index dwz_map; |
3576 | const gdb_byte *dwz_types_ignore; | |
3577 | offset_type dwz_types_elements_ignore; | |
3578 | ||
4485a1c1 SM |
3579 | gdb::array_view<const gdb_byte> dwz_index_content |
3580 | = get_gdb_index_contents_dwz (objfile, dwz); | |
3581 | ||
3582 | if (dwz_index_content.empty ()) | |
3583 | return 0; | |
3584 | ||
3585 | if (!read_gdb_index_from_buffer (objfile, | |
3586 | bfd_get_filename (dwz->dwz_bfd), 1, | |
3587 | dwz_index_content, &dwz_map, | |
3588 | &dwz_list, &dwz_list_elements, | |
3589 | &dwz_types_ignore, | |
3590 | &dwz_types_elements_ignore)) | |
2ec9a5e0 TT |
3591 | { |
3592 | warning (_("could not read '.gdb_index' section from %s; skipping"), | |
3593 | bfd_get_filename (dwz->dwz_bfd)); | |
3594 | return 0; | |
3595 | } | |
3596 | } | |
3597 | ||
12359b5e SM |
3598 | create_cus_from_index (dwarf2_per_objfile, cu_list, cu_list_elements, |
3599 | dwz_list, dwz_list_elements); | |
1fd400ff | 3600 | |
8b70b953 TT |
3601 | if (types_list_elements) |
3602 | { | |
3603 | struct dwarf2_section_info *section; | |
3604 | ||
3605 | /* We can only handle a single .debug_types when we have an | |
3606 | index. */ | |
3607 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) != 1) | |
3608 | return 0; | |
3609 | ||
3610 | section = VEC_index (dwarf2_section_info_def, | |
3611 | dwarf2_per_objfile->types, 0); | |
3612 | ||
12359b5e SM |
3613 | create_signatured_type_table_from_index (dwarf2_per_objfile, section, |
3614 | types_list, types_list_elements); | |
8b70b953 | 3615 | } |
9291a0cd | 3616 | |
3063847f | 3617 | create_addrmap_from_index (dwarf2_per_objfile, map.get ()); |
9291a0cd | 3618 | |
3063847f | 3619 | dwarf2_per_objfile->index_table = std::move (map); |
9291a0cd | 3620 | dwarf2_per_objfile->using_index = 1; |
7b9f3c50 | 3621 | dwarf2_per_objfile->quick_file_names_table = |
b76e467d | 3622 | create_quick_file_names_table (dwarf2_per_objfile->all_comp_units.size ()); |
9291a0cd TT |
3623 | |
3624 | return 1; | |
3625 | } | |
3626 | ||
dee91e82 | 3627 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 3628 | |
dee91e82 DE |
3629 | static void |
3630 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
d521ce57 | 3631 | const gdb_byte *info_ptr, |
dee91e82 DE |
3632 | struct die_info *comp_unit_die, |
3633 | int has_children, | |
3634 | void *data) | |
9291a0cd | 3635 | { |
dee91e82 | 3636 | struct dwarf2_cu *cu = reader->cu; |
ed2dc618 | 3637 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; |
518817b3 SM |
3638 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3639 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 3640 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
094b34ac | 3641 | struct dwarf2_per_cu_data *lh_cu; |
9291a0cd | 3642 | struct attribute *attr; |
dee91e82 | 3643 | int i; |
7b9f3c50 DE |
3644 | void **slot; |
3645 | struct quick_file_names *qfn; | |
9291a0cd | 3646 | |
0186c6a7 DE |
3647 | gdb_assert (! this_cu->is_debug_types); |
3648 | ||
07261596 TT |
3649 | /* Our callers never want to match partial units -- instead they |
3650 | will match the enclosing full CU. */ | |
3651 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
3652 | { | |
3653 | this_cu->v.quick->no_file_data = 1; | |
3654 | return; | |
3655 | } | |
3656 | ||
0186c6a7 | 3657 | lh_cu = this_cu; |
7b9f3c50 | 3658 | slot = NULL; |
dee91e82 | 3659 | |
fff8551c | 3660 | line_header_up lh; |
9c541725 | 3661 | sect_offset line_offset {}; |
fff8551c | 3662 | |
dee91e82 | 3663 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); |
9291a0cd TT |
3664 | if (attr) |
3665 | { | |
7b9f3c50 DE |
3666 | struct quick_file_names find_entry; |
3667 | ||
9c541725 | 3668 | line_offset = (sect_offset) DW_UNSND (attr); |
7b9f3c50 DE |
3669 | |
3670 | /* We may have already read in this line header (TU line header sharing). | |
3671 | If we have we're done. */ | |
094b34ac | 3672 | find_entry.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3673 | find_entry.hash.line_sect_off = line_offset; |
7b9f3c50 DE |
3674 | slot = htab_find_slot (dwarf2_per_objfile->quick_file_names_table, |
3675 | &find_entry, INSERT); | |
3676 | if (*slot != NULL) | |
3677 | { | |
9a3c8263 | 3678 | lh_cu->v.quick->file_names = (struct quick_file_names *) *slot; |
dee91e82 | 3679 | return; |
7b9f3c50 DE |
3680 | } |
3681 | ||
3019eac3 | 3682 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
3683 | } |
3684 | if (lh == NULL) | |
3685 | { | |
094b34ac | 3686 | lh_cu->v.quick->no_file_data = 1; |
dee91e82 | 3687 | return; |
9291a0cd TT |
3688 | } |
3689 | ||
8d749320 | 3690 | qfn = XOBNEW (&objfile->objfile_obstack, struct quick_file_names); |
094b34ac | 3691 | qfn->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3692 | qfn->hash.line_sect_off = line_offset; |
7b9f3c50 DE |
3693 | gdb_assert (slot != NULL); |
3694 | *slot = qfn; | |
9291a0cd | 3695 | |
d721ba37 | 3696 | file_and_directory fnd = find_file_and_directory (comp_unit_die, cu); |
9291a0cd | 3697 | |
fff8551c | 3698 | qfn->num_file_names = lh->file_names.size (); |
8d749320 | 3699 | qfn->file_names = |
fff8551c PA |
3700 | XOBNEWVEC (&objfile->objfile_obstack, const char *, lh->file_names.size ()); |
3701 | for (i = 0; i < lh->file_names.size (); ++i) | |
3702 | qfn->file_names[i] = file_full_name (i + 1, lh.get (), fnd.comp_dir); | |
7b9f3c50 | 3703 | qfn->real_names = NULL; |
9291a0cd | 3704 | |
094b34ac | 3705 | lh_cu->v.quick->file_names = qfn; |
dee91e82 DE |
3706 | } |
3707 | ||
3708 | /* A helper for the "quick" functions which attempts to read the line | |
3709 | table for THIS_CU. */ | |
3710 | ||
3711 | static struct quick_file_names * | |
e4a48d9d | 3712 | dw2_get_file_names (struct dwarf2_per_cu_data *this_cu) |
dee91e82 | 3713 | { |
0186c6a7 DE |
3714 | /* This should never be called for TUs. */ |
3715 | gdb_assert (! this_cu->is_debug_types); | |
3716 | /* Nor type unit groups. */ | |
3717 | gdb_assert (! IS_TYPE_UNIT_GROUP (this_cu)); | |
f4dc4d17 | 3718 | |
dee91e82 DE |
3719 | if (this_cu->v.quick->file_names != NULL) |
3720 | return this_cu->v.quick->file_names; | |
3721 | /* If we know there is no line data, no point in looking again. */ | |
3722 | if (this_cu->v.quick->no_file_data) | |
3723 | return NULL; | |
3724 | ||
0186c6a7 | 3725 | init_cutu_and_read_dies_simple (this_cu, dw2_get_file_names_reader, NULL); |
dee91e82 DE |
3726 | |
3727 | if (this_cu->v.quick->no_file_data) | |
3728 | return NULL; | |
3729 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
3730 | } |
3731 | ||
3732 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 3733 | real path for a given file name from the line table. */ |
2fdf6df6 | 3734 | |
9291a0cd | 3735 | static const char * |
7b9f3c50 DE |
3736 | dw2_get_real_path (struct objfile *objfile, |
3737 | struct quick_file_names *qfn, int index) | |
9291a0cd | 3738 | { |
7b9f3c50 DE |
3739 | if (qfn->real_names == NULL) |
3740 | qfn->real_names = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
26f2dc30 | 3741 | qfn->num_file_names, const char *); |
9291a0cd | 3742 | |
7b9f3c50 | 3743 | if (qfn->real_names[index] == NULL) |
14278e1f | 3744 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]).release (); |
9291a0cd | 3745 | |
7b9f3c50 | 3746 | return qfn->real_names[index]; |
9291a0cd TT |
3747 | } |
3748 | ||
3749 | static struct symtab * | |
3750 | dw2_find_last_source_symtab (struct objfile *objfile) | |
3751 | { | |
ed2dc618 SM |
3752 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3753 | = get_dwarf2_per_objfile (objfile); | |
b76e467d | 3754 | dwarf2_per_cu_data *dwarf_cu = dwarf2_per_objfile->all_comp_units.back (); |
58f0c718 | 3755 | compunit_symtab *cust = dw2_instantiate_symtab (dwarf_cu, false); |
ae2de4f8 | 3756 | |
43f3e411 DE |
3757 | if (cust == NULL) |
3758 | return NULL; | |
ed2dc618 | 3759 | |
43f3e411 | 3760 | return compunit_primary_filetab (cust); |
9291a0cd TT |
3761 | } |
3762 | ||
7b9f3c50 DE |
3763 | /* Traversal function for dw2_forget_cached_source_info. */ |
3764 | ||
3765 | static int | |
3766 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 3767 | { |
7b9f3c50 | 3768 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 3769 | |
7b9f3c50 | 3770 | if (file_data->real_names) |
9291a0cd | 3771 | { |
7b9f3c50 | 3772 | int i; |
9291a0cd | 3773 | |
7b9f3c50 | 3774 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 3775 | { |
7b9f3c50 DE |
3776 | xfree ((void*) file_data->real_names[i]); |
3777 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
3778 | } |
3779 | } | |
7b9f3c50 DE |
3780 | |
3781 | return 1; | |
3782 | } | |
3783 | ||
3784 | static void | |
3785 | dw2_forget_cached_source_info (struct objfile *objfile) | |
3786 | { | |
ed2dc618 SM |
3787 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3788 | = get_dwarf2_per_objfile (objfile); | |
7b9f3c50 DE |
3789 | |
3790 | htab_traverse_noresize (dwarf2_per_objfile->quick_file_names_table, | |
3791 | dw2_free_cached_file_names, NULL); | |
9291a0cd TT |
3792 | } |
3793 | ||
f8eba3c6 TT |
3794 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
3795 | the symtabs and calls the iterator. */ | |
3796 | ||
3797 | static int | |
3798 | dw2_map_expand_apply (struct objfile *objfile, | |
3799 | struct dwarf2_per_cu_data *per_cu, | |
f5b95b50 | 3800 | const char *name, const char *real_path, |
14bc53a8 | 3801 | gdb::function_view<bool (symtab *)> callback) |
f8eba3c6 | 3802 | { |
43f3e411 | 3803 | struct compunit_symtab *last_made = objfile->compunit_symtabs; |
f8eba3c6 TT |
3804 | |
3805 | /* Don't visit already-expanded CUs. */ | |
43f3e411 | 3806 | if (per_cu->v.quick->compunit_symtab) |
f8eba3c6 TT |
3807 | return 0; |
3808 | ||
3809 | /* This may expand more than one symtab, and we want to iterate over | |
3810 | all of them. */ | |
58f0c718 | 3811 | dw2_instantiate_symtab (per_cu, false); |
f8eba3c6 | 3812 | |
14bc53a8 PA |
3813 | return iterate_over_some_symtabs (name, real_path, objfile->compunit_symtabs, |
3814 | last_made, callback); | |
f8eba3c6 TT |
3815 | } |
3816 | ||
3817 | /* Implementation of the map_symtabs_matching_filename method. */ | |
3818 | ||
14bc53a8 PA |
3819 | static bool |
3820 | dw2_map_symtabs_matching_filename | |
3821 | (struct objfile *objfile, const char *name, const char *real_path, | |
3822 | gdb::function_view<bool (symtab *)> callback) | |
9291a0cd | 3823 | { |
c011a4f4 | 3824 | const char *name_basename = lbasename (name); |
ed2dc618 SM |
3825 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3826 | = get_dwarf2_per_objfile (objfile); | |
ae2de4f8 | 3827 | |
848e3e78 DE |
3828 | /* The rule is CUs specify all the files, including those used by |
3829 | any TU, so there's no need to scan TUs here. */ | |
f4dc4d17 | 3830 | |
b76e467d | 3831 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
9291a0cd | 3832 | { |
3d7bb9d9 | 3833 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 3834 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
3835 | continue; |
3836 | ||
b76e467d | 3837 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 3838 | if (file_data == NULL) |
9291a0cd TT |
3839 | continue; |
3840 | ||
b76e467d | 3841 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3842 | { |
7b9f3c50 | 3843 | const char *this_name = file_data->file_names[j]; |
da235a7c | 3844 | const char *this_real_name; |
9291a0cd | 3845 | |
af529f8f | 3846 | if (compare_filenames_for_search (this_name, name)) |
9291a0cd | 3847 | { |
f5b95b50 | 3848 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3849 | callback)) |
3850 | return true; | |
288e77a7 | 3851 | continue; |
4aac40c8 | 3852 | } |
9291a0cd | 3853 | |
c011a4f4 DE |
3854 | /* Before we invoke realpath, which can get expensive when many |
3855 | files are involved, do a quick comparison of the basenames. */ | |
3856 | if (! basenames_may_differ | |
3857 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
3858 | continue; | |
3859 | ||
da235a7c JK |
3860 | this_real_name = dw2_get_real_path (objfile, file_data, j); |
3861 | if (compare_filenames_for_search (this_real_name, name)) | |
9291a0cd | 3862 | { |
da235a7c | 3863 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3864 | callback)) |
3865 | return true; | |
288e77a7 | 3866 | continue; |
da235a7c | 3867 | } |
9291a0cd | 3868 | |
da235a7c JK |
3869 | if (real_path != NULL) |
3870 | { | |
af529f8f JK |
3871 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); |
3872 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
7b9f3c50 | 3873 | if (this_real_name != NULL |
af529f8f | 3874 | && FILENAME_CMP (real_path, this_real_name) == 0) |
9291a0cd | 3875 | { |
f5b95b50 | 3876 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3877 | callback)) |
3878 | return true; | |
288e77a7 | 3879 | continue; |
9291a0cd TT |
3880 | } |
3881 | } | |
3882 | } | |
3883 | } | |
3884 | ||
14bc53a8 | 3885 | return false; |
9291a0cd TT |
3886 | } |
3887 | ||
da51c347 DE |
3888 | /* Struct used to manage iterating over all CUs looking for a symbol. */ |
3889 | ||
3890 | struct dw2_symtab_iterator | |
9291a0cd | 3891 | { |
ed2dc618 SM |
3892 | /* The dwarf2_per_objfile owning the CUs we are iterating on. */ |
3893 | struct dwarf2_per_objfile *dwarf2_per_objfile; | |
da51c347 DE |
3894 | /* If non-zero, only look for symbols that match BLOCK_INDEX. */ |
3895 | int want_specific_block; | |
3896 | /* One of GLOBAL_BLOCK or STATIC_BLOCK. | |
3897 | Unused if !WANT_SPECIFIC_BLOCK. */ | |
3898 | int block_index; | |
3899 | /* The kind of symbol we're looking for. */ | |
3900 | domain_enum domain; | |
3901 | /* The list of CUs from the index entry of the symbol, | |
3902 | or NULL if not found. */ | |
3903 | offset_type *vec; | |
3904 | /* The next element in VEC to look at. */ | |
3905 | int next; | |
3906 | /* The number of elements in VEC, or zero if there is no match. */ | |
3907 | int length; | |
8943b874 DE |
3908 | /* Have we seen a global version of the symbol? |
3909 | If so we can ignore all further global instances. | |
3910 | This is to work around gold/15646, inefficient gold-generated | |
3911 | indices. */ | |
3912 | int global_seen; | |
da51c347 | 3913 | }; |
9291a0cd | 3914 | |
da51c347 DE |
3915 | /* Initialize the index symtab iterator ITER. |
3916 | If WANT_SPECIFIC_BLOCK is non-zero, only look for symbols | |
3917 | in block BLOCK_INDEX. Otherwise BLOCK_INDEX is ignored. */ | |
2fdf6df6 | 3918 | |
9291a0cd | 3919 | static void |
da51c347 | 3920 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, |
ed2dc618 | 3921 | struct dwarf2_per_objfile *dwarf2_per_objfile, |
da51c347 DE |
3922 | int want_specific_block, |
3923 | int block_index, | |
3924 | domain_enum domain, | |
3925 | const char *name) | |
3926 | { | |
ed2dc618 | 3927 | iter->dwarf2_per_objfile = dwarf2_per_objfile; |
da51c347 DE |
3928 | iter->want_specific_block = want_specific_block; |
3929 | iter->block_index = block_index; | |
3930 | iter->domain = domain; | |
3931 | iter->next = 0; | |
8943b874 | 3932 | iter->global_seen = 0; |
da51c347 | 3933 | |
3063847f | 3934 | mapped_index *index = dwarf2_per_objfile->index_table.get (); |
ed2dc618 SM |
3935 | |
3936 | /* index is NULL if OBJF_READNOW. */ | |
3937 | if (index != NULL && find_slot_in_mapped_hash (index, name, &iter->vec)) | |
da51c347 DE |
3938 | iter->length = MAYBE_SWAP (*iter->vec); |
3939 | else | |
3940 | { | |
3941 | iter->vec = NULL; | |
3942 | iter->length = 0; | |
3943 | } | |
3944 | } | |
3945 | ||
3946 | /* Return the next matching CU or NULL if there are no more. */ | |
3947 | ||
3948 | static struct dwarf2_per_cu_data * | |
3949 | dw2_symtab_iter_next (struct dw2_symtab_iterator *iter) | |
3950 | { | |
ed2dc618 SM |
3951 | struct dwarf2_per_objfile *dwarf2_per_objfile = iter->dwarf2_per_objfile; |
3952 | ||
da51c347 DE |
3953 | for ( ; iter->next < iter->length; ++iter->next) |
3954 | { | |
3955 | offset_type cu_index_and_attrs = | |
3956 | MAYBE_SWAP (iter->vec[iter->next + 1]); | |
3957 | offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
da51c347 DE |
3958 | int want_static = iter->block_index != GLOBAL_BLOCK; |
3959 | /* This value is only valid for index versions >= 7. */ | |
3960 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
3961 | gdb_index_symbol_kind symbol_kind = | |
3962 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3963 | /* Only check the symbol attributes if they're present. | |
3964 | Indices prior to version 7 don't record them, | |
3965 | and indices >= 7 may elide them for certain symbols | |
3966 | (gold does this). */ | |
3967 | int attrs_valid = | |
ed2dc618 | 3968 | (dwarf2_per_objfile->index_table->version >= 7 |
da51c347 DE |
3969 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); |
3970 | ||
3190f0c6 | 3971 | /* Don't crash on bad data. */ |
b76e467d | 3972 | if (cu_index >= (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 3973 | + dwarf2_per_objfile->all_type_units.size ())) |
3190f0c6 | 3974 | { |
b98664d3 | 3975 | complaint (_(".gdb_index entry has bad CU index" |
4262abfb JK |
3976 | " [in module %s]"), |
3977 | objfile_name (dwarf2_per_objfile->objfile)); | |
3190f0c6 DE |
3978 | continue; |
3979 | } | |
3980 | ||
ff4c9fec | 3981 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (cu_index); |
3190f0c6 | 3982 | |
da51c347 | 3983 | /* Skip if already read in. */ |
43f3e411 | 3984 | if (per_cu->v.quick->compunit_symtab) |
da51c347 DE |
3985 | continue; |
3986 | ||
8943b874 DE |
3987 | /* Check static vs global. */ |
3988 | if (attrs_valid) | |
3989 | { | |
3990 | if (iter->want_specific_block | |
3991 | && want_static != is_static) | |
3992 | continue; | |
3993 | /* Work around gold/15646. */ | |
3994 | if (!is_static && iter->global_seen) | |
3995 | continue; | |
3996 | if (!is_static) | |
3997 | iter->global_seen = 1; | |
3998 | } | |
da51c347 DE |
3999 | |
4000 | /* Only check the symbol's kind if it has one. */ | |
4001 | if (attrs_valid) | |
4002 | { | |
4003 | switch (iter->domain) | |
4004 | { | |
4005 | case VAR_DOMAIN: | |
4006 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
4007 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
4008 | /* Some types are also in VAR_DOMAIN. */ | |
4009 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
4010 | continue; | |
4011 | break; | |
4012 | case STRUCT_DOMAIN: | |
4013 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
4014 | continue; | |
4015 | break; | |
4016 | case LABEL_DOMAIN: | |
4017 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
4018 | continue; | |
4019 | break; | |
4020 | default: | |
4021 | break; | |
4022 | } | |
4023 | } | |
4024 | ||
4025 | ++iter->next; | |
4026 | return per_cu; | |
4027 | } | |
4028 | ||
4029 | return NULL; | |
4030 | } | |
4031 | ||
43f3e411 | 4032 | static struct compunit_symtab * |
da51c347 DE |
4033 | dw2_lookup_symbol (struct objfile *objfile, int block_index, |
4034 | const char *name, domain_enum domain) | |
9291a0cd | 4035 | { |
43f3e411 | 4036 | struct compunit_symtab *stab_best = NULL; |
ed2dc618 SM |
4037 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4038 | = get_dwarf2_per_objfile (objfile); | |
9291a0cd | 4039 | |
b5ec771e PA |
4040 | lookup_name_info lookup_name (name, symbol_name_match_type::FULL); |
4041 | ||
ed2dc618 SM |
4042 | struct dw2_symtab_iterator iter; |
4043 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 4044 | |
ed2dc618 | 4045 | dw2_symtab_iter_init (&iter, dwarf2_per_objfile, 1, block_index, domain, name); |
9291a0cd | 4046 | |
ed2dc618 SM |
4047 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
4048 | { | |
4049 | struct symbol *sym, *with_opaque = NULL; | |
58f0c718 | 4050 | struct compunit_symtab *stab = dw2_instantiate_symtab (per_cu, false); |
ed2dc618 SM |
4051 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
4052 | struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); | |
da51c347 | 4053 | |
ed2dc618 SM |
4054 | sym = block_find_symbol (block, name, domain, |
4055 | block_find_non_opaque_type_preferred, | |
4056 | &with_opaque); | |
b2e2f908 | 4057 | |
ed2dc618 SM |
4058 | /* Some caution must be observed with overloaded functions |
4059 | and methods, since the index will not contain any overload | |
4060 | information (but NAME might contain it). */ | |
da51c347 | 4061 | |
ed2dc618 SM |
4062 | if (sym != NULL |
4063 | && SYMBOL_MATCHES_SEARCH_NAME (sym, lookup_name)) | |
4064 | return stab; | |
4065 | if (with_opaque != NULL | |
4066 | && SYMBOL_MATCHES_SEARCH_NAME (with_opaque, lookup_name)) | |
4067 | stab_best = stab; | |
da51c347 | 4068 | |
ed2dc618 | 4069 | /* Keep looking through other CUs. */ |
9291a0cd | 4070 | } |
9291a0cd | 4071 | |
da51c347 | 4072 | return stab_best; |
9291a0cd TT |
4073 | } |
4074 | ||
4075 | static void | |
4076 | dw2_print_stats (struct objfile *objfile) | |
4077 | { | |
ed2dc618 SM |
4078 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4079 | = get_dwarf2_per_objfile (objfile); | |
b76e467d | 4080 | int total = (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 4081 | + dwarf2_per_objfile->all_type_units.size ()); |
ed2dc618 | 4082 | int count = 0; |
9291a0cd | 4083 | |
ed2dc618 | 4084 | for (int i = 0; i < total; ++i) |
9291a0cd | 4085 | { |
ff4c9fec | 4086 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (i); |
9291a0cd | 4087 | |
43f3e411 | 4088 | if (!per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
4089 | ++count; |
4090 | } | |
e4a48d9d | 4091 | printf_filtered (_(" Number of read CUs: %d\n"), total - count); |
9291a0cd TT |
4092 | printf_filtered (_(" Number of unread CUs: %d\n"), count); |
4093 | } | |
4094 | ||
779bd270 DE |
4095 | /* This dumps minimal information about the index. |
4096 | It is called via "mt print objfiles". | |
4097 | One use is to verify .gdb_index has been loaded by the | |
4098 | gdb.dwarf2/gdb-index.exp testcase. */ | |
4099 | ||
9291a0cd TT |
4100 | static void |
4101 | dw2_dump (struct objfile *objfile) | |
4102 | { | |
ed2dc618 SM |
4103 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4104 | = get_dwarf2_per_objfile (objfile); | |
4105 | ||
779bd270 DE |
4106 | gdb_assert (dwarf2_per_objfile->using_index); |
4107 | printf_filtered (".gdb_index:"); | |
4108 | if (dwarf2_per_objfile->index_table != NULL) | |
4109 | { | |
4110 | printf_filtered (" version %d\n", | |
4111 | dwarf2_per_objfile->index_table->version); | |
4112 | } | |
4113 | else | |
4114 | printf_filtered (" faked for \"readnow\"\n"); | |
4115 | printf_filtered ("\n"); | |
9291a0cd TT |
4116 | } |
4117 | ||
9291a0cd TT |
4118 | static void |
4119 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
4120 | const char *func_name) | |
4121 | { | |
ed2dc618 SM |
4122 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4123 | = get_dwarf2_per_objfile (objfile); | |
da51c347 | 4124 | |
ed2dc618 SM |
4125 | struct dw2_symtab_iterator iter; |
4126 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 4127 | |
ed2dc618 SM |
4128 | /* Note: It doesn't matter what we pass for block_index here. */ |
4129 | dw2_symtab_iter_init (&iter, dwarf2_per_objfile, 0, GLOBAL_BLOCK, VAR_DOMAIN, | |
4130 | func_name); | |
da51c347 | 4131 | |
ed2dc618 | 4132 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
58f0c718 | 4133 | dw2_instantiate_symtab (per_cu, false); |
da51c347 | 4134 | |
9291a0cd TT |
4135 | } |
4136 | ||
4137 | static void | |
4138 | dw2_expand_all_symtabs (struct objfile *objfile) | |
4139 | { | |
ed2dc618 SM |
4140 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4141 | = get_dwarf2_per_objfile (objfile); | |
b76e467d | 4142 | int total_units = (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 4143 | + dwarf2_per_objfile->all_type_units.size ()); |
9291a0cd | 4144 | |
ed2dc618 | 4145 | for (int i = 0; i < total_units; ++i) |
9291a0cd | 4146 | { |
ff4c9fec | 4147 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (i); |
9291a0cd | 4148 | |
58f0c718 TT |
4149 | /* We don't want to directly expand a partial CU, because if we |
4150 | read it with the wrong language, then assertion failures can | |
4151 | be triggered later on. See PR symtab/23010. So, tell | |
4152 | dw2_instantiate_symtab to skip partial CUs -- any important | |
4153 | partial CU will be read via DW_TAG_imported_unit anyway. */ | |
4154 | dw2_instantiate_symtab (per_cu, true); | |
9291a0cd TT |
4155 | } |
4156 | } | |
4157 | ||
4158 | static void | |
652a8996 JK |
4159 | dw2_expand_symtabs_with_fullname (struct objfile *objfile, |
4160 | const char *fullname) | |
9291a0cd | 4161 | { |
ed2dc618 SM |
4162 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4163 | = get_dwarf2_per_objfile (objfile); | |
d4637a04 DE |
4164 | |
4165 | /* We don't need to consider type units here. | |
4166 | This is only called for examining code, e.g. expand_line_sal. | |
4167 | There can be an order of magnitude (or more) more type units | |
4168 | than comp units, and we avoid them if we can. */ | |
4169 | ||
b76e467d | 4170 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
9291a0cd | 4171 | { |
3d7bb9d9 | 4172 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 4173 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
4174 | continue; |
4175 | ||
b76e467d | 4176 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 4177 | if (file_data == NULL) |
9291a0cd TT |
4178 | continue; |
4179 | ||
b76e467d | 4180 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 4181 | { |
652a8996 JK |
4182 | const char *this_fullname = file_data->file_names[j]; |
4183 | ||
4184 | if (filename_cmp (this_fullname, fullname) == 0) | |
9291a0cd | 4185 | { |
58f0c718 | 4186 | dw2_instantiate_symtab (per_cu, false); |
9291a0cd TT |
4187 | break; |
4188 | } | |
4189 | } | |
4190 | } | |
4191 | } | |
4192 | ||
9291a0cd | 4193 | static void |
ade7ed9e | 4194 | dw2_map_matching_symbols (struct objfile *objfile, |
fe978cb0 | 4195 | const char * name, domain_enum domain, |
ade7ed9e | 4196 | int global, |
40658b94 PH |
4197 | int (*callback) (struct block *, |
4198 | struct symbol *, void *), | |
b5ec771e | 4199 | void *data, symbol_name_match_type match, |
2edb89d3 | 4200 | symbol_compare_ftype *ordered_compare) |
9291a0cd | 4201 | { |
40658b94 | 4202 | /* Currently unimplemented; used for Ada. The function can be called if the |
a9e6a4bb JK |
4203 | current language is Ada for a non-Ada objfile using GNU index. As Ada |
4204 | does not look for non-Ada symbols this function should just return. */ | |
9291a0cd TT |
4205 | } |
4206 | ||
b5ec771e PA |
4207 | /* Symbol name matcher for .gdb_index names. |
4208 | ||
4209 | Symbol names in .gdb_index have a few particularities: | |
4210 | ||
4211 | - There's no indication of which is the language of each symbol. | |
4212 | ||
4213 | Since each language has its own symbol name matching algorithm, | |
4214 | and we don't know which language is the right one, we must match | |
3f563c84 PA |
4215 | each symbol against all languages. This would be a potential |
4216 | performance problem if it were not mitigated by the | |
4217 | mapped_index::name_components lookup table, which significantly | |
4218 | reduces the number of times we need to call into this matcher, | |
4219 | making it a non-issue. | |
b5ec771e PA |
4220 | |
4221 | - Symbol names in the index have no overload (parameter) | |
4222 | information. I.e., in C++, "foo(int)" and "foo(long)" both | |
4223 | appear as "foo" in the index, for example. | |
4224 | ||
4225 | This means that the lookup names passed to the symbol name | |
4226 | matcher functions must have no parameter information either | |
4227 | because (e.g.) symbol search name "foo" does not match | |
4228 | lookup-name "foo(int)" [while swapping search name for lookup | |
4229 | name would match]. | |
4230 | */ | |
4231 | class gdb_index_symbol_name_matcher | |
4232 | { | |
4233 | public: | |
4234 | /* Prepares the vector of comparison functions for LOOKUP_NAME. */ | |
4235 | gdb_index_symbol_name_matcher (const lookup_name_info &lookup_name); | |
4236 | ||
4237 | /* Walk all the matcher routines and match SYMBOL_NAME against them. | |
4238 | Returns true if any matcher matches. */ | |
4239 | bool matches (const char *symbol_name); | |
4240 | ||
4241 | private: | |
4242 | /* A reference to the lookup name we're matching against. */ | |
4243 | const lookup_name_info &m_lookup_name; | |
4244 | ||
4245 | /* A vector holding all the different symbol name matchers, for all | |
4246 | languages. */ | |
4247 | std::vector<symbol_name_matcher_ftype *> m_symbol_name_matcher_funcs; | |
4248 | }; | |
4249 | ||
4250 | gdb_index_symbol_name_matcher::gdb_index_symbol_name_matcher | |
4251 | (const lookup_name_info &lookup_name) | |
4252 | : m_lookup_name (lookup_name) | |
4253 | { | |
4254 | /* Prepare the vector of comparison functions upfront, to avoid | |
4255 | doing the same work for each symbol. Care is taken to avoid | |
4256 | matching with the same matcher more than once if/when multiple | |
4257 | languages use the same matcher function. */ | |
4258 | auto &matchers = m_symbol_name_matcher_funcs; | |
4259 | matchers.reserve (nr_languages); | |
4260 | ||
4261 | matchers.push_back (default_symbol_name_matcher); | |
4262 | ||
4263 | for (int i = 0; i < nr_languages; i++) | |
4264 | { | |
4265 | const language_defn *lang = language_def ((enum language) i); | |
c63d3e8d | 4266 | symbol_name_matcher_ftype *name_matcher |
618daa93 | 4267 | = get_symbol_name_matcher (lang, m_lookup_name); |
c63d3e8d PA |
4268 | |
4269 | /* Don't insert the same comparison routine more than once. | |
4270 | Note that we do this linear walk instead of a seemingly | |
4271 | cheaper sorted insert, or use a std::set or something like | |
4272 | that, because relative order of function addresses is not | |
4273 | stable. This is not a problem in practice because the number | |
4274 | of supported languages is low, and the cost here is tiny | |
4275 | compared to the number of searches we'll do afterwards using | |
4276 | this object. */ | |
4277 | if (name_matcher != default_symbol_name_matcher | |
4278 | && (std::find (matchers.begin (), matchers.end (), name_matcher) | |
4279 | == matchers.end ())) | |
4280 | matchers.push_back (name_matcher); | |
b5ec771e PA |
4281 | } |
4282 | } | |
4283 | ||
4284 | bool | |
4285 | gdb_index_symbol_name_matcher::matches (const char *symbol_name) | |
4286 | { | |
4287 | for (auto matches_name : m_symbol_name_matcher_funcs) | |
4288 | if (matches_name (symbol_name, m_lookup_name, NULL)) | |
4289 | return true; | |
4290 | ||
4291 | return false; | |
4292 | } | |
4293 | ||
e1ef7d7a PA |
4294 | /* Starting from a search name, return the string that finds the upper |
4295 | bound of all strings that start with SEARCH_NAME in a sorted name | |
4296 | list. Returns the empty string to indicate that the upper bound is | |
4297 | the end of the list. */ | |
4298 | ||
4299 | static std::string | |
4300 | make_sort_after_prefix_name (const char *search_name) | |
4301 | { | |
4302 | /* When looking to complete "func", we find the upper bound of all | |
4303 | symbols that start with "func" by looking for where we'd insert | |
4304 | the closest string that would follow "func" in lexicographical | |
4305 | order. Usually, that's "func"-with-last-character-incremented, | |
4306 | i.e. "fund". Mind non-ASCII characters, though. Usually those | |
4307 | will be UTF-8 multi-byte sequences, but we can't be certain. | |
4308 | Especially mind the 0xff character, which is a valid character in | |
4309 | non-UTF-8 source character sets (e.g. Latin1 'ÿ'), and we can't | |
4310 | rule out compilers allowing it in identifiers. Note that | |
4311 | conveniently, strcmp/strcasecmp are specified to compare | |
4312 | characters interpreted as unsigned char. So what we do is treat | |
4313 | the whole string as a base 256 number composed of a sequence of | |
4314 | base 256 "digits" and add 1 to it. I.e., adding 1 to 0xff wraps | |
4315 | to 0, and carries 1 to the following more-significant position. | |
4316 | If the very first character in SEARCH_NAME ends up incremented | |
4317 | and carries/overflows, then the upper bound is the end of the | |
4318 | list. The string after the empty string is also the empty | |
4319 | string. | |
4320 | ||
4321 | Some examples of this operation: | |
4322 | ||
4323 | SEARCH_NAME => "+1" RESULT | |
4324 | ||
4325 | "abc" => "abd" | |
4326 | "ab\xff" => "ac" | |
4327 | "\xff" "a" "\xff" => "\xff" "b" | |
4328 | "\xff" => "" | |
4329 | "\xff\xff" => "" | |
4330 | "" => "" | |
4331 | ||
4332 | Then, with these symbols for example: | |
4333 | ||
4334 | func | |
4335 | func1 | |
4336 | fund | |
4337 | ||
4338 | completing "func" looks for symbols between "func" and | |
4339 | "func"-with-last-character-incremented, i.e. "fund" (exclusive), | |
4340 | which finds "func" and "func1", but not "fund". | |
4341 | ||
4342 | And with: | |
4343 | ||
4344 | funcÿ (Latin1 'ÿ' [0xff]) | |
4345 | funcÿ1 | |
4346 | fund | |
4347 | ||
4348 | completing "funcÿ" looks for symbols between "funcÿ" and "fund" | |
4349 | (exclusive), which finds "funcÿ" and "funcÿ1", but not "fund". | |
4350 | ||
4351 | And with: | |
4352 | ||
4353 | ÿÿ (Latin1 'ÿ' [0xff]) | |
4354 | ÿÿ1 | |
4355 | ||
4356 | completing "ÿ" or "ÿÿ" looks for symbols between between "ÿÿ" and | |
4357 | the end of the list. | |
4358 | */ | |
4359 | std::string after = search_name; | |
4360 | while (!after.empty () && (unsigned char) after.back () == 0xff) | |
4361 | after.pop_back (); | |
4362 | if (!after.empty ()) | |
4363 | after.back () = (unsigned char) after.back () + 1; | |
4364 | return after; | |
4365 | } | |
4366 | ||
5c58de74 | 4367 | /* See declaration. */ |
61d96d7e | 4368 | |
5c58de74 PA |
4369 | std::pair<std::vector<name_component>::const_iterator, |
4370 | std::vector<name_component>::const_iterator> | |
44ed8f3e | 4371 | mapped_index_base::find_name_components_bounds |
5c58de74 | 4372 | (const lookup_name_info &lookup_name_without_params) const |
3f563c84 | 4373 | { |
5c58de74 PA |
4374 | auto *name_cmp |
4375 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
3f563c84 PA |
4376 | |
4377 | const char *cplus | |
c62446b1 | 4378 | = lookup_name_without_params.cplus ().lookup_name ().c_str (); |
9291a0cd | 4379 | |
3f563c84 PA |
4380 | /* Comparison function object for lower_bound that matches against a |
4381 | given symbol name. */ | |
4382 | auto lookup_compare_lower = [&] (const name_component &elem, | |
4383 | const char *name) | |
4384 | { | |
5c58de74 | 4385 | const char *elem_qualified = this->symbol_name_at (elem.idx); |
3f563c84 PA |
4386 | const char *elem_name = elem_qualified + elem.name_offset; |
4387 | return name_cmp (elem_name, name) < 0; | |
4388 | }; | |
4389 | ||
4390 | /* Comparison function object for upper_bound that matches against a | |
4391 | given symbol name. */ | |
4392 | auto lookup_compare_upper = [&] (const char *name, | |
4393 | const name_component &elem) | |
4394 | { | |
5c58de74 | 4395 | const char *elem_qualified = this->symbol_name_at (elem.idx); |
3f563c84 PA |
4396 | const char *elem_name = elem_qualified + elem.name_offset; |
4397 | return name_cmp (name, elem_name) < 0; | |
4398 | }; | |
4399 | ||
5c58de74 PA |
4400 | auto begin = this->name_components.begin (); |
4401 | auto end = this->name_components.end (); | |
3f563c84 PA |
4402 | |
4403 | /* Find the lower bound. */ | |
4404 | auto lower = [&] () | |
4405 | { | |
5c58de74 | 4406 | if (lookup_name_without_params.completion_mode () && cplus[0] == '\0') |
3f563c84 PA |
4407 | return begin; |
4408 | else | |
4409 | return std::lower_bound (begin, end, cplus, lookup_compare_lower); | |
4410 | } (); | |
4411 | ||
4412 | /* Find the upper bound. */ | |
4413 | auto upper = [&] () | |
4414 | { | |
5c58de74 | 4415 | if (lookup_name_without_params.completion_mode ()) |
3f563c84 | 4416 | { |
e1ef7d7a PA |
4417 | /* In completion mode, we want UPPER to point past all |
4418 | symbols names that have the same prefix. I.e., with | |
4419 | these symbols, and completing "func": | |
4420 | ||
4421 | function << lower bound | |
4422 | function1 | |
4423 | other_function << upper bound | |
4424 | ||
4425 | We find the upper bound by looking for the insertion | |
4426 | point of "func"-with-last-character-incremented, | |
4427 | i.e. "fund". */ | |
4428 | std::string after = make_sort_after_prefix_name (cplus); | |
4429 | if (after.empty ()) | |
3f563c84 | 4430 | return end; |
e6b2f5ef PA |
4431 | return std::lower_bound (lower, end, after.c_str (), |
4432 | lookup_compare_lower); | |
3f563c84 PA |
4433 | } |
4434 | else | |
4435 | return std::upper_bound (lower, end, cplus, lookup_compare_upper); | |
4436 | } (); | |
4437 | ||
5c58de74 PA |
4438 | return {lower, upper}; |
4439 | } | |
4440 | ||
4441 | /* See declaration. */ | |
4442 | ||
4443 | void | |
44ed8f3e | 4444 | mapped_index_base::build_name_components () |
5c58de74 PA |
4445 | { |
4446 | if (!this->name_components.empty ()) | |
4447 | return; | |
4448 | ||
4449 | this->name_components_casing = case_sensitivity; | |
4450 | auto *name_cmp | |
4451 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
4452 | ||
4453 | /* The code below only knows how to break apart components of C++ | |
4454 | symbol names (and other languages that use '::' as | |
4455 | namespace/module separator). If we add support for wild matching | |
4456 | to some language that uses some other operator (E.g., Ada, Go and | |
4457 | D use '.'), then we'll need to try splitting the symbol name | |
4458 | according to that language too. Note that Ada does support wild | |
4459 | matching, but doesn't currently support .gdb_index. */ | |
44ed8f3e PA |
4460 | auto count = this->symbol_name_count (); |
4461 | for (offset_type idx = 0; idx < count; idx++) | |
5c58de74 | 4462 | { |
44ed8f3e | 4463 | if (this->symbol_name_slot_invalid (idx)) |
5c58de74 PA |
4464 | continue; |
4465 | ||
4466 | const char *name = this->symbol_name_at (idx); | |
4467 | ||
4468 | /* Add each name component to the name component table. */ | |
4469 | unsigned int previous_len = 0; | |
4470 | for (unsigned int current_len = cp_find_first_component (name); | |
4471 | name[current_len] != '\0'; | |
4472 | current_len += cp_find_first_component (name + current_len)) | |
4473 | { | |
4474 | gdb_assert (name[current_len] == ':'); | |
4475 | this->name_components.push_back ({previous_len, idx}); | |
4476 | /* Skip the '::'. */ | |
4477 | current_len += 2; | |
4478 | previous_len = current_len; | |
4479 | } | |
4480 | this->name_components.push_back ({previous_len, idx}); | |
4481 | } | |
4482 | ||
4483 | /* Sort name_components elements by name. */ | |
4484 | auto name_comp_compare = [&] (const name_component &left, | |
4485 | const name_component &right) | |
4486 | { | |
4487 | const char *left_qualified = this->symbol_name_at (left.idx); | |
4488 | const char *right_qualified = this->symbol_name_at (right.idx); | |
4489 | ||
4490 | const char *left_name = left_qualified + left.name_offset; | |
4491 | const char *right_name = right_qualified + right.name_offset; | |
4492 | ||
4493 | return name_cmp (left_name, right_name) < 0; | |
4494 | }; | |
4495 | ||
4496 | std::sort (this->name_components.begin (), | |
4497 | this->name_components.end (), | |
4498 | name_comp_compare); | |
4499 | } | |
4500 | ||
4501 | /* Helper for dw2_expand_symtabs_matching that works with a | |
44ed8f3e PA |
4502 | mapped_index_base instead of the containing objfile. This is split |
4503 | to a separate function in order to be able to unit test the | |
4504 | name_components matching using a mock mapped_index_base. For each | |
5c58de74 | 4505 | symbol name that matches, calls MATCH_CALLBACK, passing it the |
44ed8f3e | 4506 | symbol's index in the mapped_index_base symbol table. */ |
5c58de74 PA |
4507 | |
4508 | static void | |
4509 | dw2_expand_symtabs_matching_symbol | |
44ed8f3e | 4510 | (mapped_index_base &index, |
5c58de74 PA |
4511 | const lookup_name_info &lookup_name_in, |
4512 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
4513 | enum search_domain kind, | |
4514 | gdb::function_view<void (offset_type)> match_callback) | |
4515 | { | |
4516 | lookup_name_info lookup_name_without_params | |
4517 | = lookup_name_in.make_ignore_params (); | |
4518 | gdb_index_symbol_name_matcher lookup_name_matcher | |
4519 | (lookup_name_without_params); | |
4520 | ||
4521 | /* Build the symbol name component sorted vector, if we haven't | |
4522 | yet. */ | |
4523 | index.build_name_components (); | |
4524 | ||
4525 | auto bounds = index.find_name_components_bounds (lookup_name_without_params); | |
4526 | ||
3f563c84 PA |
4527 | /* Now for each symbol name in range, check to see if we have a name |
4528 | match, and if so, call the MATCH_CALLBACK callback. */ | |
4529 | ||
4530 | /* The same symbol may appear more than once in the range though. | |
4531 | E.g., if we're looking for symbols that complete "w", and we have | |
4532 | a symbol named "w1::w2", we'll find the two name components for | |
4533 | that same symbol in the range. To be sure we only call the | |
4534 | callback once per symbol, we first collect the symbol name | |
4535 | indexes that matched in a temporary vector and ignore | |
4536 | duplicates. */ | |
4537 | std::vector<offset_type> matches; | |
5c58de74 | 4538 | matches.reserve (std::distance (bounds.first, bounds.second)); |
3f563c84 | 4539 | |
5c58de74 | 4540 | for (; bounds.first != bounds.second; ++bounds.first) |
3f563c84 | 4541 | { |
5c58de74 | 4542 | const char *qualified = index.symbol_name_at (bounds.first->idx); |
3f563c84 PA |
4543 | |
4544 | if (!lookup_name_matcher.matches (qualified) | |
4545 | || (symbol_matcher != NULL && !symbol_matcher (qualified))) | |
9291a0cd TT |
4546 | continue; |
4547 | ||
5c58de74 | 4548 | matches.push_back (bounds.first->idx); |
3f563c84 PA |
4549 | } |
4550 | ||
4551 | std::sort (matches.begin (), matches.end ()); | |
4552 | ||
4553 | /* Finally call the callback, once per match. */ | |
4554 | ULONGEST prev = -1; | |
4555 | for (offset_type idx : matches) | |
4556 | { | |
4557 | if (prev != idx) | |
4558 | { | |
4559 | match_callback (idx); | |
4560 | prev = idx; | |
4561 | } | |
4562 | } | |
4563 | ||
4564 | /* Above we use a type wider than idx's for 'prev', since 0 and | |
4565 | (offset_type)-1 are both possible values. */ | |
4566 | static_assert (sizeof (prev) > sizeof (offset_type), ""); | |
4567 | } | |
4568 | ||
c62446b1 PA |
4569 | #if GDB_SELF_TEST |
4570 | ||
4571 | namespace selftests { namespace dw2_expand_symtabs_matching { | |
4572 | ||
a3c5fafd PA |
4573 | /* A mock .gdb_index/.debug_names-like name index table, enough to |
4574 | exercise dw2_expand_symtabs_matching_symbol, which works with the | |
4575 | mapped_index_base interface. Builds an index from the symbol list | |
4576 | passed as parameter to the constructor. */ | |
4577 | class mock_mapped_index : public mapped_index_base | |
c62446b1 PA |
4578 | { |
4579 | public: | |
a3c5fafd PA |
4580 | mock_mapped_index (gdb::array_view<const char *> symbols) |
4581 | : m_symbol_table (symbols) | |
c62446b1 PA |
4582 | {} |
4583 | ||
a3c5fafd | 4584 | DISABLE_COPY_AND_ASSIGN (mock_mapped_index); |
c62446b1 | 4585 | |
a3c5fafd | 4586 | /* Return the number of names in the symbol table. */ |
632e107b | 4587 | size_t symbol_name_count () const override |
c62446b1 | 4588 | { |
a3c5fafd | 4589 | return m_symbol_table.size (); |
c62446b1 PA |
4590 | } |
4591 | ||
a3c5fafd | 4592 | /* Get the name of the symbol at IDX in the symbol table. */ |
632e107b | 4593 | const char *symbol_name_at (offset_type idx) const override |
a3c5fafd PA |
4594 | { |
4595 | return m_symbol_table[idx]; | |
4596 | } | |
c62446b1 | 4597 | |
a3c5fafd PA |
4598 | private: |
4599 | gdb::array_view<const char *> m_symbol_table; | |
c62446b1 PA |
4600 | }; |
4601 | ||
4602 | /* Convenience function that converts a NULL pointer to a "<null>" | |
4603 | string, to pass to print routines. */ | |
4604 | ||
4605 | static const char * | |
4606 | string_or_null (const char *str) | |
4607 | { | |
4608 | return str != NULL ? str : "<null>"; | |
4609 | } | |
4610 | ||
4611 | /* Check if a lookup_name_info built from | |
4612 | NAME/MATCH_TYPE/COMPLETION_MODE matches the symbols in the mock | |
4613 | index. EXPECTED_LIST is the list of expected matches, in expected | |
4614 | matching order. If no match expected, then an empty list is | |
4615 | specified. Returns true on success. On failure prints a warning | |
4616 | indicating the file:line that failed, and returns false. */ | |
4617 | ||
4618 | static bool | |
4619 | check_match (const char *file, int line, | |
4620 | mock_mapped_index &mock_index, | |
4621 | const char *name, symbol_name_match_type match_type, | |
4622 | bool completion_mode, | |
4623 | std::initializer_list<const char *> expected_list) | |
4624 | { | |
4625 | lookup_name_info lookup_name (name, match_type, completion_mode); | |
4626 | ||
4627 | bool matched = true; | |
4628 | ||
4629 | auto mismatch = [&] (const char *expected_str, | |
4630 | const char *got) | |
4631 | { | |
4632 | warning (_("%s:%d: match_type=%s, looking-for=\"%s\", " | |
4633 | "expected=\"%s\", got=\"%s\"\n"), | |
4634 | file, line, | |
4635 | (match_type == symbol_name_match_type::FULL | |
4636 | ? "FULL" : "WILD"), | |
4637 | name, string_or_null (expected_str), string_or_null (got)); | |
4638 | matched = false; | |
4639 | }; | |
4640 | ||
4641 | auto expected_it = expected_list.begin (); | |
4642 | auto expected_end = expected_list.end (); | |
4643 | ||
a3c5fafd | 4644 | dw2_expand_symtabs_matching_symbol (mock_index, lookup_name, |
c62446b1 PA |
4645 | NULL, ALL_DOMAIN, |
4646 | [&] (offset_type idx) | |
4647 | { | |
a3c5fafd | 4648 | const char *matched_name = mock_index.symbol_name_at (idx); |
c62446b1 PA |
4649 | const char *expected_str |
4650 | = expected_it == expected_end ? NULL : *expected_it++; | |
4651 | ||
4652 | if (expected_str == NULL || strcmp (expected_str, matched_name) != 0) | |
4653 | mismatch (expected_str, matched_name); | |
4654 | }); | |
4655 | ||
4656 | const char *expected_str | |
4657 | = expected_it == expected_end ? NULL : *expected_it++; | |
4658 | if (expected_str != NULL) | |
4659 | mismatch (expected_str, NULL); | |
4660 | ||
4661 | return matched; | |
4662 | } | |
4663 | ||
4664 | /* The symbols added to the mock mapped_index for testing (in | |
4665 | canonical form). */ | |
4666 | static const char *test_symbols[] = { | |
4667 | "function", | |
4668 | "std::bar", | |
4669 | "std::zfunction", | |
4670 | "std::zfunction2", | |
4671 | "w1::w2", | |
4672 | "ns::foo<char*>", | |
4673 | "ns::foo<int>", | |
4674 | "ns::foo<long>", | |
a20714ff PA |
4675 | "ns2::tmpl<int>::foo2", |
4676 | "(anonymous namespace)::A::B::C", | |
c62446b1 | 4677 | |
e1ef7d7a PA |
4678 | /* These are used to check that the increment-last-char in the |
4679 | matching algorithm for completion doesn't match "t1_fund" when | |
4680 | completing "t1_func". */ | |
4681 | "t1_func", | |
4682 | "t1_func1", | |
4683 | "t1_fund", | |
4684 | "t1_fund1", | |
4685 | ||
4686 | /* A UTF-8 name with multi-byte sequences to make sure that | |
4687 | cp-name-parser understands this as a single identifier ("função" | |
4688 | is "function" in PT). */ | |
4689 | u8"u8função", | |
4690 | ||
4691 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4692 | "yfunc\377", | |
4693 | ||
4694 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4695 | "\377", | |
4696 | "\377\377123", | |
4697 | ||
c62446b1 PA |
4698 | /* A name with all sorts of complications. Starts with "z" to make |
4699 | it easier for the completion tests below. */ | |
4700 | #define Z_SYM_NAME \ | |
4701 | "z::std::tuple<(anonymous namespace)::ui*, std::bar<(anonymous namespace)::ui> >" \ | |
4702 | "::tuple<(anonymous namespace)::ui*, " \ | |
4703 | "std::default_delete<(anonymous namespace)::ui>, void>" | |
4704 | ||
4705 | Z_SYM_NAME | |
4706 | }; | |
4707 | ||
a3c5fafd PA |
4708 | /* Returns true if the mapped_index_base::find_name_component_bounds |
4709 | method finds EXPECTED_SYMS in INDEX when looking for SEARCH_NAME, | |
4710 | in completion mode. */ | |
5c58de74 PA |
4711 | |
4712 | static bool | |
a3c5fafd | 4713 | check_find_bounds_finds (mapped_index_base &index, |
5c58de74 PA |
4714 | const char *search_name, |
4715 | gdb::array_view<const char *> expected_syms) | |
4716 | { | |
4717 | lookup_name_info lookup_name (search_name, | |
4718 | symbol_name_match_type::FULL, true); | |
4719 | ||
4720 | auto bounds = index.find_name_components_bounds (lookup_name); | |
4721 | ||
4722 | size_t distance = std::distance (bounds.first, bounds.second); | |
4723 | if (distance != expected_syms.size ()) | |
4724 | return false; | |
4725 | ||
4726 | for (size_t exp_elem = 0; exp_elem < distance; exp_elem++) | |
4727 | { | |
4728 | auto nc_elem = bounds.first + exp_elem; | |
4729 | const char *qualified = index.symbol_name_at (nc_elem->idx); | |
4730 | if (strcmp (qualified, expected_syms[exp_elem]) != 0) | |
4731 | return false; | |
4732 | } | |
4733 | ||
4734 | return true; | |
4735 | } | |
4736 | ||
4737 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4738 | method. */ | |
4739 | ||
c62446b1 | 4740 | static void |
5c58de74 PA |
4741 | test_mapped_index_find_name_component_bounds () |
4742 | { | |
4743 | mock_mapped_index mock_index (test_symbols); | |
4744 | ||
a3c5fafd | 4745 | mock_index.build_name_components (); |
5c58de74 PA |
4746 | |
4747 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4748 | method in completion mode. */ | |
4749 | { | |
4750 | static const char *expected_syms[] = { | |
4751 | "t1_func", | |
4752 | "t1_func1", | |
5c58de74 PA |
4753 | }; |
4754 | ||
a3c5fafd | 4755 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4756 | "t1_func", expected_syms)); |
4757 | } | |
4758 | ||
4759 | /* Check that the increment-last-char in the name matching algorithm | |
4760 | for completion doesn't get confused with Ansi1 'ÿ' / 0xff. */ | |
4761 | { | |
4762 | static const char *expected_syms1[] = { | |
4763 | "\377", | |
4764 | "\377\377123", | |
4765 | }; | |
a3c5fafd | 4766 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4767 | "\377", expected_syms1)); |
4768 | ||
4769 | static const char *expected_syms2[] = { | |
4770 | "\377\377123", | |
4771 | }; | |
a3c5fafd | 4772 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4773 | "\377\377", expected_syms2)); |
4774 | } | |
4775 | } | |
4776 | ||
4777 | /* Test dw2_expand_symtabs_matching_symbol. */ | |
4778 | ||
4779 | static void | |
4780 | test_dw2_expand_symtabs_matching_symbol () | |
c62446b1 PA |
4781 | { |
4782 | mock_mapped_index mock_index (test_symbols); | |
4783 | ||
4784 | /* We let all tests run until the end even if some fails, for debug | |
4785 | convenience. */ | |
4786 | bool any_mismatch = false; | |
4787 | ||
4788 | /* Create the expected symbols list (an initializer_list). Needed | |
4789 | because lists have commas, and we need to pass them to CHECK, | |
4790 | which is a macro. */ | |
4791 | #define EXPECT(...) { __VA_ARGS__ } | |
4792 | ||
4793 | /* Wrapper for check_match that passes down the current | |
4794 | __FILE__/__LINE__. */ | |
4795 | #define CHECK_MATCH(NAME, MATCH_TYPE, COMPLETION_MODE, EXPECTED_LIST) \ | |
4796 | any_mismatch |= !check_match (__FILE__, __LINE__, \ | |
4797 | mock_index, \ | |
4798 | NAME, MATCH_TYPE, COMPLETION_MODE, \ | |
4799 | EXPECTED_LIST) | |
4800 | ||
4801 | /* Identity checks. */ | |
4802 | for (const char *sym : test_symbols) | |
4803 | { | |
4804 | /* Should be able to match all existing symbols. */ | |
4805 | CHECK_MATCH (sym, symbol_name_match_type::FULL, false, | |
4806 | EXPECT (sym)); | |
4807 | ||
4808 | /* Should be able to match all existing symbols with | |
4809 | parameters. */ | |
4810 | std::string with_params = std::string (sym) + "(int)"; | |
4811 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4812 | EXPECT (sym)); | |
4813 | ||
4814 | /* Should be able to match all existing symbols with | |
4815 | parameters and qualifiers. */ | |
4816 | with_params = std::string (sym) + " ( int ) const"; | |
4817 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4818 | EXPECT (sym)); | |
4819 | ||
4820 | /* This should really find sym, but cp-name-parser.y doesn't | |
4821 | know about lvalue/rvalue qualifiers yet. */ | |
4822 | with_params = std::string (sym) + " ( int ) &&"; | |
4823 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4824 | {}); | |
4825 | } | |
4826 | ||
e1ef7d7a PA |
4827 | /* Check that the name matching algorithm for completion doesn't get |
4828 | confused with Latin1 'ÿ' / 0xff. */ | |
4829 | { | |
4830 | static const char str[] = "\377"; | |
4831 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4832 | EXPECT ("\377", "\377\377123")); | |
4833 | } | |
4834 | ||
4835 | /* Check that the increment-last-char in the matching algorithm for | |
4836 | completion doesn't match "t1_fund" when completing "t1_func". */ | |
4837 | { | |
4838 | static const char str[] = "t1_func"; | |
4839 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4840 | EXPECT ("t1_func", "t1_func1")); | |
4841 | } | |
4842 | ||
c62446b1 PA |
4843 | /* Check that completion mode works at each prefix of the expected |
4844 | symbol name. */ | |
4845 | { | |
4846 | static const char str[] = "function(int)"; | |
4847 | size_t len = strlen (str); | |
4848 | std::string lookup; | |
4849 | ||
4850 | for (size_t i = 1; i < len; i++) | |
4851 | { | |
4852 | lookup.assign (str, i); | |
4853 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4854 | EXPECT ("function")); | |
4855 | } | |
4856 | } | |
4857 | ||
4858 | /* While "w" is a prefix of both components, the match function | |
4859 | should still only be called once. */ | |
4860 | { | |
4861 | CHECK_MATCH ("w", symbol_name_match_type::FULL, true, | |
4862 | EXPECT ("w1::w2")); | |
a20714ff PA |
4863 | CHECK_MATCH ("w", symbol_name_match_type::WILD, true, |
4864 | EXPECT ("w1::w2")); | |
c62446b1 PA |
4865 | } |
4866 | ||
4867 | /* Same, with a "complicated" symbol. */ | |
4868 | { | |
4869 | static const char str[] = Z_SYM_NAME; | |
4870 | size_t len = strlen (str); | |
4871 | std::string lookup; | |
4872 | ||
4873 | for (size_t i = 1; i < len; i++) | |
4874 | { | |
4875 | lookup.assign (str, i); | |
4876 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4877 | EXPECT (Z_SYM_NAME)); | |
4878 | } | |
4879 | } | |
4880 | ||
4881 | /* In FULL mode, an incomplete symbol doesn't match. */ | |
4882 | { | |
4883 | CHECK_MATCH ("std::zfunction(int", symbol_name_match_type::FULL, false, | |
4884 | {}); | |
4885 | } | |
4886 | ||
4887 | /* A complete symbol with parameters matches any overload, since the | |
4888 | index has no overload info. */ | |
4889 | { | |
4890 | CHECK_MATCH ("std::zfunction(int)", symbol_name_match_type::FULL, true, | |
4891 | EXPECT ("std::zfunction", "std::zfunction2")); | |
a20714ff PA |
4892 | CHECK_MATCH ("zfunction(int)", symbol_name_match_type::WILD, true, |
4893 | EXPECT ("std::zfunction", "std::zfunction2")); | |
4894 | CHECK_MATCH ("zfunc", symbol_name_match_type::WILD, true, | |
4895 | EXPECT ("std::zfunction", "std::zfunction2")); | |
c62446b1 PA |
4896 | } |
4897 | ||
4898 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4899 | template argument list. */ | |
4900 | { | |
4901 | static const char expected[] = "ns::foo<int>"; | |
4902 | CHECK_MATCH ("ns :: foo < int > ", symbol_name_match_type::FULL, false, | |
4903 | EXPECT (expected)); | |
a20714ff PA |
4904 | CHECK_MATCH ("foo < int > ", symbol_name_match_type::WILD, false, |
4905 | EXPECT (expected)); | |
c62446b1 PA |
4906 | } |
4907 | ||
4908 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4909 | template argument list that includes a pointer. */ | |
4910 | { | |
4911 | static const char expected[] = "ns::foo<char*>"; | |
4912 | /* Try both completion and non-completion modes. */ | |
4913 | static const bool completion_mode[2] = {false, true}; | |
4914 | for (size_t i = 0; i < 2; i++) | |
4915 | { | |
4916 | CHECK_MATCH ("ns :: foo < char * >", symbol_name_match_type::FULL, | |
4917 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4918 | CHECK_MATCH ("foo < char * >", symbol_name_match_type::WILD, |
4919 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4920 | |
4921 | CHECK_MATCH ("ns :: foo < char * > (int)", symbol_name_match_type::FULL, | |
4922 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4923 | CHECK_MATCH ("foo < char * > (int)", symbol_name_match_type::WILD, |
4924 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4925 | } |
4926 | } | |
4927 | ||
4928 | { | |
4929 | /* Check method qualifiers are ignored. */ | |
4930 | static const char expected[] = "ns::foo<char*>"; | |
4931 | CHECK_MATCH ("ns :: foo < char * > ( int ) const", | |
4932 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
4933 | CHECK_MATCH ("ns :: foo < char * > ( int ) &&", | |
4934 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
a20714ff PA |
4935 | CHECK_MATCH ("foo < char * > ( int ) const", |
4936 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
4937 | CHECK_MATCH ("foo < char * > ( int ) &&", | |
4938 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
c62446b1 PA |
4939 | } |
4940 | ||
4941 | /* Test lookup names that don't match anything. */ | |
4942 | { | |
a20714ff PA |
4943 | CHECK_MATCH ("bar2", symbol_name_match_type::WILD, false, |
4944 | {}); | |
4945 | ||
c62446b1 PA |
4946 | CHECK_MATCH ("doesntexist", symbol_name_match_type::FULL, false, |
4947 | {}); | |
4948 | } | |
4949 | ||
a20714ff PA |
4950 | /* Some wild matching tests, exercising "(anonymous namespace)", |
4951 | which should not be confused with a parameter list. */ | |
4952 | { | |
4953 | static const char *syms[] = { | |
4954 | "A::B::C", | |
4955 | "B::C", | |
4956 | "C", | |
4957 | "A :: B :: C ( int )", | |
4958 | "B :: C ( int )", | |
4959 | "C ( int )", | |
4960 | }; | |
4961 | ||
4962 | for (const char *s : syms) | |
4963 | { | |
4964 | CHECK_MATCH (s, symbol_name_match_type::WILD, false, | |
4965 | EXPECT ("(anonymous namespace)::A::B::C")); | |
4966 | } | |
4967 | } | |
4968 | ||
4969 | { | |
4970 | static const char expected[] = "ns2::tmpl<int>::foo2"; | |
4971 | CHECK_MATCH ("tmp", symbol_name_match_type::WILD, true, | |
4972 | EXPECT (expected)); | |
4973 | CHECK_MATCH ("tmpl<", symbol_name_match_type::WILD, true, | |
4974 | EXPECT (expected)); | |
4975 | } | |
4976 | ||
c62446b1 PA |
4977 | SELF_CHECK (!any_mismatch); |
4978 | ||
4979 | #undef EXPECT | |
4980 | #undef CHECK_MATCH | |
4981 | } | |
4982 | ||
5c58de74 PA |
4983 | static void |
4984 | run_test () | |
4985 | { | |
4986 | test_mapped_index_find_name_component_bounds (); | |
4987 | test_dw2_expand_symtabs_matching_symbol (); | |
4988 | } | |
4989 | ||
c62446b1 PA |
4990 | }} // namespace selftests::dw2_expand_symtabs_matching |
4991 | ||
4992 | #endif /* GDB_SELF_TEST */ | |
4993 | ||
4b514bc8 JK |
4994 | /* If FILE_MATCHER is NULL or if PER_CU has |
4995 | dwarf2_per_cu_quick_data::MARK set (see | |
4996 | dw_expand_symtabs_matching_file_matcher), expand the CU and call | |
4997 | EXPANSION_NOTIFY on it. */ | |
4998 | ||
4999 | static void | |
5000 | dw2_expand_symtabs_matching_one | |
5001 | (struct dwarf2_per_cu_data *per_cu, | |
5002 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
5003 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify) | |
5004 | { | |
5005 | if (file_matcher == NULL || per_cu->v.quick->mark) | |
5006 | { | |
5007 | bool symtab_was_null | |
5008 | = (per_cu->v.quick->compunit_symtab == NULL); | |
5009 | ||
58f0c718 | 5010 | dw2_instantiate_symtab (per_cu, false); |
4b514bc8 JK |
5011 | |
5012 | if (expansion_notify != NULL | |
5013 | && symtab_was_null | |
5014 | && per_cu->v.quick->compunit_symtab != NULL) | |
5015 | expansion_notify (per_cu->v.quick->compunit_symtab); | |
5016 | } | |
5017 | } | |
5018 | ||
3f563c84 PA |
5019 | /* Helper for dw2_expand_matching symtabs. Called on each symbol |
5020 | matched, to expand corresponding CUs that were marked. IDX is the | |
5021 | index of the symbol name that matched. */ | |
5022 | ||
5023 | static void | |
5024 | dw2_expand_marked_cus | |
ed2dc618 | 5025 | (struct dwarf2_per_objfile *dwarf2_per_objfile, offset_type idx, |
3f563c84 PA |
5026 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
5027 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
5028 | search_domain kind) | |
5029 | { | |
3f563c84 PA |
5030 | offset_type *vec, vec_len, vec_idx; |
5031 | bool global_seen = false; | |
ed2dc618 | 5032 | mapped_index &index = *dwarf2_per_objfile->index_table; |
3f563c84 | 5033 | |
61920122 | 5034 | vec = (offset_type *) (index.constant_pool |
f00a2de2 | 5035 | + MAYBE_SWAP (index.symbol_table[idx].vec)); |
61920122 PA |
5036 | vec_len = MAYBE_SWAP (vec[0]); |
5037 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
5038 | { | |
61920122 PA |
5039 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[vec_idx + 1]); |
5040 | /* This value is only valid for index versions >= 7. */ | |
5041 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
5042 | gdb_index_symbol_kind symbol_kind = | |
5043 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
5044 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
5045 | /* Only check the symbol attributes if they're present. | |
5046 | Indices prior to version 7 don't record them, | |
5047 | and indices >= 7 may elide them for certain symbols | |
5048 | (gold does this). */ | |
5049 | int attrs_valid = | |
5050 | (index.version >= 7 | |
5051 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
5052 | ||
5053 | /* Work around gold/15646. */ | |
5054 | if (attrs_valid) | |
9291a0cd | 5055 | { |
61920122 PA |
5056 | if (!is_static && global_seen) |
5057 | continue; | |
5058 | if (!is_static) | |
5059 | global_seen = true; | |
5060 | } | |
3190f0c6 | 5061 | |
61920122 PA |
5062 | /* Only check the symbol's kind if it has one. */ |
5063 | if (attrs_valid) | |
5064 | { | |
5065 | switch (kind) | |
8943b874 | 5066 | { |
61920122 PA |
5067 | case VARIABLES_DOMAIN: |
5068 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
5069 | continue; | |
5070 | break; | |
5071 | case FUNCTIONS_DOMAIN: | |
5072 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
8943b874 | 5073 | continue; |
61920122 PA |
5074 | break; |
5075 | case TYPES_DOMAIN: | |
5076 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
5077 | continue; | |
5078 | break; | |
5079 | default: | |
5080 | break; | |
8943b874 | 5081 | } |
61920122 | 5082 | } |
8943b874 | 5083 | |
61920122 | 5084 | /* Don't crash on bad data. */ |
b76e467d | 5085 | if (cu_index >= (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 5086 | + dwarf2_per_objfile->all_type_units.size ())) |
61920122 | 5087 | { |
b98664d3 | 5088 | complaint (_(".gdb_index entry has bad CU index" |
ed2dc618 SM |
5089 | " [in module %s]"), |
5090 | objfile_name (dwarf2_per_objfile->objfile)); | |
61920122 PA |
5091 | continue; |
5092 | } | |
5093 | ||
ff4c9fec | 5094 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (cu_index); |
4b514bc8 JK |
5095 | dw2_expand_symtabs_matching_one (per_cu, file_matcher, |
5096 | expansion_notify); | |
61920122 PA |
5097 | } |
5098 | } | |
5099 | ||
4b514bc8 JK |
5100 | /* If FILE_MATCHER is non-NULL, set all the |
5101 | dwarf2_per_cu_quick_data::MARK of the current DWARF2_PER_OBJFILE | |
5102 | that match FILE_MATCHER. */ | |
5103 | ||
61920122 | 5104 | static void |
4b514bc8 | 5105 | dw_expand_symtabs_matching_file_matcher |
ed2dc618 SM |
5106 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
5107 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher) | |
61920122 | 5108 | { |
4b514bc8 | 5109 | if (file_matcher == NULL) |
61920122 PA |
5110 | return; |
5111 | ||
4b514bc8 JK |
5112 | objfile *const objfile = dwarf2_per_objfile->objfile; |
5113 | ||
5114 | htab_up visited_found (htab_create_alloc (10, htab_hash_pointer, | |
5115 | htab_eq_pointer, | |
5116 | NULL, xcalloc, xfree)); | |
5117 | htab_up visited_not_found (htab_create_alloc (10, htab_hash_pointer, | |
61920122 PA |
5118 | htab_eq_pointer, |
5119 | NULL, xcalloc, xfree)); | |
61920122 | 5120 | |
4b514bc8 JK |
5121 | /* The rule is CUs specify all the files, including those used by |
5122 | any TU, so there's no need to scan TUs here. */ | |
61920122 | 5123 | |
b76e467d | 5124 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 5125 | { |
927aa2e7 JK |
5126 | QUIT; |
5127 | ||
5128 | per_cu->v.quick->mark = 0; | |
5129 | ||
5130 | /* We only need to look at symtabs not already expanded. */ | |
5131 | if (per_cu->v.quick->compunit_symtab) | |
5132 | continue; | |
5133 | ||
b76e467d | 5134 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
927aa2e7 JK |
5135 | if (file_data == NULL) |
5136 | continue; | |
5137 | ||
5138 | if (htab_find (visited_not_found.get (), file_data) != NULL) | |
5139 | continue; | |
5140 | else if (htab_find (visited_found.get (), file_data) != NULL) | |
5141 | { | |
5142 | per_cu->v.quick->mark = 1; | |
5143 | continue; | |
5144 | } | |
5145 | ||
b76e467d | 5146 | for (int j = 0; j < file_data->num_file_names; ++j) |
927aa2e7 JK |
5147 | { |
5148 | const char *this_real_name; | |
5149 | ||
5150 | if (file_matcher (file_data->file_names[j], false)) | |
5151 | { | |
5152 | per_cu->v.quick->mark = 1; | |
5153 | break; | |
5154 | } | |
5155 | ||
5156 | /* Before we invoke realpath, which can get expensive when many | |
5157 | files are involved, do a quick comparison of the basenames. */ | |
5158 | if (!basenames_may_differ | |
5159 | && !file_matcher (lbasename (file_data->file_names[j]), | |
5160 | true)) | |
5161 | continue; | |
5162 | ||
5163 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
5164 | if (file_matcher (this_real_name, false)) | |
5165 | { | |
5166 | per_cu->v.quick->mark = 1; | |
5167 | break; | |
5168 | } | |
5169 | } | |
5170 | ||
b76e467d SM |
5171 | void **slot = htab_find_slot (per_cu->v.quick->mark |
5172 | ? visited_found.get () | |
5173 | : visited_not_found.get (), | |
5174 | file_data, INSERT); | |
927aa2e7 JK |
5175 | *slot = file_data; |
5176 | } | |
5177 | } | |
5178 | ||
5179 | static void | |
5180 | dw2_expand_symtabs_matching | |
5181 | (struct objfile *objfile, | |
5182 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
5183 | const lookup_name_info &lookup_name, | |
5184 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
5185 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
5186 | enum search_domain kind) | |
5187 | { | |
ed2dc618 SM |
5188 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5189 | = get_dwarf2_per_objfile (objfile); | |
927aa2e7 JK |
5190 | |
5191 | /* index_table is NULL if OBJF_READNOW. */ | |
5192 | if (!dwarf2_per_objfile->index_table) | |
5193 | return; | |
5194 | ||
ed2dc618 | 5195 | dw_expand_symtabs_matching_file_matcher (dwarf2_per_objfile, file_matcher); |
927aa2e7 JK |
5196 | |
5197 | mapped_index &index = *dwarf2_per_objfile->index_table; | |
5198 | ||
5199 | dw2_expand_symtabs_matching_symbol (index, lookup_name, | |
5200 | symbol_matcher, | |
5201 | kind, [&] (offset_type idx) | |
5202 | { | |
ed2dc618 | 5203 | dw2_expand_marked_cus (dwarf2_per_objfile, idx, file_matcher, |
927aa2e7 JK |
5204 | expansion_notify, kind); |
5205 | }); | |
5206 | } | |
5207 | ||
5208 | /* A helper for dw2_find_pc_sect_compunit_symtab which finds the most specific | |
5209 | symtab. */ | |
5210 | ||
5211 | static struct compunit_symtab * | |
5212 | recursively_find_pc_sect_compunit_symtab (struct compunit_symtab *cust, | |
5213 | CORE_ADDR pc) | |
5214 | { | |
5215 | int i; | |
5216 | ||
5217 | if (COMPUNIT_BLOCKVECTOR (cust) != NULL | |
5218 | && blockvector_contains_pc (COMPUNIT_BLOCKVECTOR (cust), pc)) | |
5219 | return cust; | |
5220 | ||
5221 | if (cust->includes == NULL) | |
5222 | return NULL; | |
5223 | ||
5224 | for (i = 0; cust->includes[i]; ++i) | |
5225 | { | |
5226 | struct compunit_symtab *s = cust->includes[i]; | |
5227 | ||
5228 | s = recursively_find_pc_sect_compunit_symtab (s, pc); | |
5229 | if (s != NULL) | |
5230 | return s; | |
5231 | } | |
5232 | ||
5233 | return NULL; | |
5234 | } | |
5235 | ||
5236 | static struct compunit_symtab * | |
5237 | dw2_find_pc_sect_compunit_symtab (struct objfile *objfile, | |
5238 | struct bound_minimal_symbol msymbol, | |
5239 | CORE_ADDR pc, | |
5240 | struct obj_section *section, | |
5241 | int warn_if_readin) | |
5242 | { | |
5243 | struct dwarf2_per_cu_data *data; | |
5244 | struct compunit_symtab *result; | |
5245 | ||
927aa2e7 JK |
5246 | if (!objfile->psymtabs_addrmap) |
5247 | return NULL; | |
5248 | ||
79748972 TT |
5249 | CORE_ADDR baseaddr = ANOFFSET (objfile->section_offsets, |
5250 | SECT_OFF_TEXT (objfile)); | |
927aa2e7 | 5251 | data = (struct dwarf2_per_cu_data *) addrmap_find (objfile->psymtabs_addrmap, |
79748972 | 5252 | pc - baseaddr); |
927aa2e7 JK |
5253 | if (!data) |
5254 | return NULL; | |
5255 | ||
5256 | if (warn_if_readin && data->v.quick->compunit_symtab) | |
5257 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), | |
5258 | paddress (get_objfile_arch (objfile), pc)); | |
5259 | ||
5260 | result | |
58f0c718 TT |
5261 | = recursively_find_pc_sect_compunit_symtab (dw2_instantiate_symtab (data, |
5262 | false), | |
927aa2e7 JK |
5263 | pc); |
5264 | gdb_assert (result != NULL); | |
5265 | return result; | |
5266 | } | |
5267 | ||
5268 | static void | |
5269 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, | |
5270 | void *data, int need_fullname) | |
5271 | { | |
ed2dc618 SM |
5272 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5273 | = get_dwarf2_per_objfile (objfile); | |
927aa2e7 JK |
5274 | |
5275 | if (!dwarf2_per_objfile->filenames_cache) | |
5276 | { | |
5277 | dwarf2_per_objfile->filenames_cache.emplace (); | |
5278 | ||
5279 | htab_up visited (htab_create_alloc (10, | |
5280 | htab_hash_pointer, htab_eq_pointer, | |
5281 | NULL, xcalloc, xfree)); | |
5282 | ||
5283 | /* The rule is CUs specify all the files, including those used | |
5284 | by any TU, so there's no need to scan TUs here. We can | |
5285 | ignore file names coming from already-expanded CUs. */ | |
5286 | ||
b76e467d | 5287 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 5288 | { |
927aa2e7 JK |
5289 | if (per_cu->v.quick->compunit_symtab) |
5290 | { | |
5291 | void **slot = htab_find_slot (visited.get (), | |
5292 | per_cu->v.quick->file_names, | |
5293 | INSERT); | |
5294 | ||
5295 | *slot = per_cu->v.quick->file_names; | |
5296 | } | |
5297 | } | |
5298 | ||
b76e467d | 5299 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 5300 | { |
927aa2e7 JK |
5301 | /* We only need to look at symtabs not already expanded. */ |
5302 | if (per_cu->v.quick->compunit_symtab) | |
5303 | continue; | |
5304 | ||
b76e467d | 5305 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
927aa2e7 JK |
5306 | if (file_data == NULL) |
5307 | continue; | |
5308 | ||
b76e467d | 5309 | void **slot = htab_find_slot (visited.get (), file_data, INSERT); |
927aa2e7 JK |
5310 | if (*slot) |
5311 | { | |
5312 | /* Already visited. */ | |
5313 | continue; | |
5314 | } | |
5315 | *slot = file_data; | |
5316 | ||
5317 | for (int j = 0; j < file_data->num_file_names; ++j) | |
5318 | { | |
5319 | const char *filename = file_data->file_names[j]; | |
5320 | dwarf2_per_objfile->filenames_cache->seen (filename); | |
5321 | } | |
5322 | } | |
5323 | } | |
5324 | ||
5325 | dwarf2_per_objfile->filenames_cache->traverse ([&] (const char *filename) | |
5326 | { | |
5327 | gdb::unique_xmalloc_ptr<char> this_real_name; | |
5328 | ||
5329 | if (need_fullname) | |
5330 | this_real_name = gdb_realpath (filename); | |
5331 | (*fun) (filename, this_real_name.get (), data); | |
5332 | }); | |
5333 | } | |
5334 | ||
5335 | static int | |
5336 | dw2_has_symbols (struct objfile *objfile) | |
5337 | { | |
5338 | return 1; | |
5339 | } | |
5340 | ||
5341 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
5342 | { | |
5343 | dw2_has_symbols, | |
5344 | dw2_find_last_source_symtab, | |
5345 | dw2_forget_cached_source_info, | |
5346 | dw2_map_symtabs_matching_filename, | |
5347 | dw2_lookup_symbol, | |
5348 | dw2_print_stats, | |
5349 | dw2_dump, | |
927aa2e7 JK |
5350 | dw2_expand_symtabs_for_function, |
5351 | dw2_expand_all_symtabs, | |
5352 | dw2_expand_symtabs_with_fullname, | |
5353 | dw2_map_matching_symbols, | |
5354 | dw2_expand_symtabs_matching, | |
5355 | dw2_find_pc_sect_compunit_symtab, | |
5356 | NULL, | |
5357 | dw2_map_symbol_filenames | |
5358 | }; | |
5359 | ||
5360 | /* DWARF-5 debug_names reader. */ | |
5361 | ||
5362 | /* DWARF-5 augmentation string for GDB's DW_IDX_GNU_* extension. */ | |
5363 | static const gdb_byte dwarf5_augmentation[] = { 'G', 'D', 'B', 0 }; | |
5364 | ||
5365 | /* A helper function that reads the .debug_names section in SECTION | |
5366 | and fills in MAP. FILENAME is the name of the file containing the | |
5367 | section; it is used for error reporting. | |
5368 | ||
5369 | Returns true if all went well, false otherwise. */ | |
5370 | ||
5371 | static bool | |
5372 | read_debug_names_from_section (struct objfile *objfile, | |
5373 | const char *filename, | |
5374 | struct dwarf2_section_info *section, | |
5375 | mapped_debug_names &map) | |
5376 | { | |
5377 | if (dwarf2_section_empty_p (section)) | |
5378 | return false; | |
5379 | ||
5380 | /* Older elfutils strip versions could keep the section in the main | |
5381 | executable while splitting it for the separate debug info file. */ | |
5382 | if ((get_section_flags (section) & SEC_HAS_CONTENTS) == 0) | |
5383 | return false; | |
5384 | ||
5385 | dwarf2_read_section (objfile, section); | |
5386 | ||
5387 | map.dwarf5_byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
5388 | ||
5389 | const gdb_byte *addr = section->buffer; | |
5390 | ||
5391 | bfd *const abfd = get_section_bfd_owner (section); | |
5392 | ||
5393 | unsigned int bytes_read; | |
5394 | LONGEST length = read_initial_length (abfd, addr, &bytes_read); | |
5395 | addr += bytes_read; | |
5396 | ||
5397 | map.dwarf5_is_dwarf64 = bytes_read != 4; | |
5398 | map.offset_size = map.dwarf5_is_dwarf64 ? 8 : 4; | |
5399 | if (bytes_read + length != section->size) | |
5400 | { | |
5401 | /* There may be multiple per-CU indices. */ | |
5402 | warning (_("Section .debug_names in %s length %s does not match " | |
5403 | "section length %s, ignoring .debug_names."), | |
5404 | filename, plongest (bytes_read + length), | |
5405 | pulongest (section->size)); | |
5406 | return false; | |
5407 | } | |
5408 | ||
5409 | /* The version number. */ | |
5410 | uint16_t version = read_2_bytes (abfd, addr); | |
5411 | addr += 2; | |
5412 | if (version != 5) | |
5413 | { | |
5414 | warning (_("Section .debug_names in %s has unsupported version %d, " | |
5415 | "ignoring .debug_names."), | |
5416 | filename, version); | |
5417 | return false; | |
5418 | } | |
5419 | ||
5420 | /* Padding. */ | |
5421 | uint16_t padding = read_2_bytes (abfd, addr); | |
5422 | addr += 2; | |
5423 | if (padding != 0) | |
5424 | { | |
5425 | warning (_("Section .debug_names in %s has unsupported padding %d, " | |
5426 | "ignoring .debug_names."), | |
5427 | filename, padding); | |
5428 | return false; | |
5429 | } | |
5430 | ||
5431 | /* comp_unit_count - The number of CUs in the CU list. */ | |
5432 | map.cu_count = read_4_bytes (abfd, addr); | |
5433 | addr += 4; | |
5434 | ||
5435 | /* local_type_unit_count - The number of TUs in the local TU | |
5436 | list. */ | |
5437 | map.tu_count = read_4_bytes (abfd, addr); | |
5438 | addr += 4; | |
5439 | ||
5440 | /* foreign_type_unit_count - The number of TUs in the foreign TU | |
5441 | list. */ | |
5442 | uint32_t foreign_tu_count = read_4_bytes (abfd, addr); | |
5443 | addr += 4; | |
5444 | if (foreign_tu_count != 0) | |
5445 | { | |
5446 | warning (_("Section .debug_names in %s has unsupported %lu foreign TUs, " | |
5447 | "ignoring .debug_names."), | |
5448 | filename, static_cast<unsigned long> (foreign_tu_count)); | |
5449 | return false; | |
5450 | } | |
5451 | ||
5452 | /* bucket_count - The number of hash buckets in the hash lookup | |
5453 | table. */ | |
5454 | map.bucket_count = read_4_bytes (abfd, addr); | |
5455 | addr += 4; | |
5456 | ||
5457 | /* name_count - The number of unique names in the index. */ | |
5458 | map.name_count = read_4_bytes (abfd, addr); | |
5459 | addr += 4; | |
5460 | ||
5461 | /* abbrev_table_size - The size in bytes of the abbreviations | |
5462 | table. */ | |
5463 | uint32_t abbrev_table_size = read_4_bytes (abfd, addr); | |
5464 | addr += 4; | |
5465 | ||
5466 | /* augmentation_string_size - The size in bytes of the augmentation | |
5467 | string. This value is rounded up to a multiple of 4. */ | |
5468 | uint32_t augmentation_string_size = read_4_bytes (abfd, addr); | |
5469 | addr += 4; | |
5470 | map.augmentation_is_gdb = ((augmentation_string_size | |
5471 | == sizeof (dwarf5_augmentation)) | |
5472 | && memcmp (addr, dwarf5_augmentation, | |
5473 | sizeof (dwarf5_augmentation)) == 0); | |
5474 | augmentation_string_size += (-augmentation_string_size) & 3; | |
5475 | addr += augmentation_string_size; | |
5476 | ||
5477 | /* List of CUs */ | |
5478 | map.cu_table_reordered = addr; | |
5479 | addr += map.cu_count * map.offset_size; | |
5480 | ||
5481 | /* List of Local TUs */ | |
5482 | map.tu_table_reordered = addr; | |
5483 | addr += map.tu_count * map.offset_size; | |
5484 | ||
5485 | /* Hash Lookup Table */ | |
5486 | map.bucket_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5487 | addr += map.bucket_count * 4; | |
5488 | map.hash_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5489 | addr += map.name_count * 4; | |
5490 | ||
5491 | /* Name Table */ | |
5492 | map.name_table_string_offs_reordered = addr; | |
5493 | addr += map.name_count * map.offset_size; | |
5494 | map.name_table_entry_offs_reordered = addr; | |
5495 | addr += map.name_count * map.offset_size; | |
5496 | ||
5497 | const gdb_byte *abbrev_table_start = addr; | |
5498 | for (;;) | |
5499 | { | |
5500 | unsigned int bytes_read; | |
5501 | const ULONGEST index_num = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5502 | addr += bytes_read; | |
5503 | if (index_num == 0) | |
5504 | break; | |
5505 | ||
5506 | const auto insertpair | |
5507 | = map.abbrev_map.emplace (index_num, mapped_debug_names::index_val ()); | |
5508 | if (!insertpair.second) | |
5509 | { | |
5510 | warning (_("Section .debug_names in %s has duplicate index %s, " | |
5511 | "ignoring .debug_names."), | |
5512 | filename, pulongest (index_num)); | |
5513 | return false; | |
5514 | } | |
5515 | mapped_debug_names::index_val &indexval = insertpair.first->second; | |
5516 | indexval.dwarf_tag = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5517 | addr += bytes_read; | |
5518 | ||
5519 | for (;;) | |
5520 | { | |
5521 | mapped_debug_names::index_val::attr attr; | |
5522 | attr.dw_idx = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5523 | addr += bytes_read; | |
5524 | attr.form = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5525 | addr += bytes_read; | |
5526 | if (attr.form == DW_FORM_implicit_const) | |
5527 | { | |
5528 | attr.implicit_const = read_signed_leb128 (abfd, addr, | |
5529 | &bytes_read); | |
5530 | addr += bytes_read; | |
5531 | } | |
5532 | if (attr.dw_idx == 0 && attr.form == 0) | |
5533 | break; | |
5534 | indexval.attr_vec.push_back (std::move (attr)); | |
5535 | } | |
5536 | } | |
5537 | if (addr != abbrev_table_start + abbrev_table_size) | |
5538 | { | |
5539 | warning (_("Section .debug_names in %s has abbreviation_table " | |
5540 | "of size %zu vs. written as %u, ignoring .debug_names."), | |
5541 | filename, addr - abbrev_table_start, abbrev_table_size); | |
5542 | return false; | |
5543 | } | |
5544 | map.entry_pool = addr; | |
5545 | ||
5546 | return true; | |
5547 | } | |
5548 | ||
5549 | /* A helper for create_cus_from_debug_names that handles the MAP's CU | |
5550 | list. */ | |
5551 | ||
5552 | static void | |
ed2dc618 | 5553 | create_cus_from_debug_names_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
5554 | const mapped_debug_names &map, |
5555 | dwarf2_section_info §ion, | |
b76e467d | 5556 | bool is_dwz) |
927aa2e7 JK |
5557 | { |
5558 | sect_offset sect_off_prev; | |
5559 | for (uint32_t i = 0; i <= map.cu_count; ++i) | |
5560 | { | |
5561 | sect_offset sect_off_next; | |
5562 | if (i < map.cu_count) | |
5563 | { | |
5564 | sect_off_next | |
5565 | = (sect_offset) (extract_unsigned_integer | |
5566 | (map.cu_table_reordered + i * map.offset_size, | |
5567 | map.offset_size, | |
5568 | map.dwarf5_byte_order)); | |
5569 | } | |
5570 | else | |
5571 | sect_off_next = (sect_offset) section.size; | |
5572 | if (i >= 1) | |
5573 | { | |
5574 | const ULONGEST length = sect_off_next - sect_off_prev; | |
b76e467d | 5575 | dwarf2_per_cu_data *per_cu |
ed2dc618 | 5576 | = create_cu_from_index_list (dwarf2_per_objfile, §ion, is_dwz, |
927aa2e7 | 5577 | sect_off_prev, length); |
b76e467d | 5578 | dwarf2_per_objfile->all_comp_units.push_back (per_cu); |
927aa2e7 JK |
5579 | } |
5580 | sect_off_prev = sect_off_next; | |
5581 | } | |
5582 | } | |
5583 | ||
5584 | /* Read the CU list from the mapped index, and use it to create all | |
ed2dc618 | 5585 | the CU objects for this dwarf2_per_objfile. */ |
927aa2e7 JK |
5586 | |
5587 | static void | |
ed2dc618 | 5588 | create_cus_from_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
5589 | const mapped_debug_names &map, |
5590 | const mapped_debug_names &dwz_map) | |
5591 | { | |
b76e467d SM |
5592 | gdb_assert (dwarf2_per_objfile->all_comp_units.empty ()); |
5593 | dwarf2_per_objfile->all_comp_units.reserve (map.cu_count + dwz_map.cu_count); | |
927aa2e7 | 5594 | |
ed2dc618 SM |
5595 | create_cus_from_debug_names_list (dwarf2_per_objfile, map, |
5596 | dwarf2_per_objfile->info, | |
b76e467d | 5597 | false /* is_dwz */); |
927aa2e7 JK |
5598 | |
5599 | if (dwz_map.cu_count == 0) | |
5600 | return; | |
5601 | ||
ed2dc618 SM |
5602 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
5603 | create_cus_from_debug_names_list (dwarf2_per_objfile, dwz_map, dwz->info, | |
b76e467d | 5604 | true /* is_dwz */); |
927aa2e7 JK |
5605 | } |
5606 | ||
5607 | /* Read .debug_names. If everything went ok, initialize the "quick" | |
5608 | elements of all the CUs and return true. Otherwise, return false. */ | |
5609 | ||
5610 | static bool | |
ed2dc618 | 5611 | dwarf2_read_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile) |
927aa2e7 | 5612 | { |
22ca247e TT |
5613 | std::unique_ptr<mapped_debug_names> map |
5614 | (new mapped_debug_names (dwarf2_per_objfile)); | |
ed2dc618 SM |
5615 | mapped_debug_names dwz_map (dwarf2_per_objfile); |
5616 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
927aa2e7 JK |
5617 | |
5618 | if (!read_debug_names_from_section (objfile, objfile_name (objfile), | |
5619 | &dwarf2_per_objfile->debug_names, | |
22ca247e | 5620 | *map)) |
927aa2e7 JK |
5621 | return false; |
5622 | ||
5623 | /* Don't use the index if it's empty. */ | |
22ca247e | 5624 | if (map->name_count == 0) |
927aa2e7 JK |
5625 | return false; |
5626 | ||
5627 | /* If there is a .dwz file, read it so we can get its CU list as | |
5628 | well. */ | |
ed2dc618 | 5629 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
927aa2e7 JK |
5630 | if (dwz != NULL) |
5631 | { | |
5632 | if (!read_debug_names_from_section (objfile, | |
5633 | bfd_get_filename (dwz->dwz_bfd), | |
5634 | &dwz->debug_names, dwz_map)) | |
5635 | { | |
5636 | warning (_("could not read '.debug_names' section from %s; skipping"), | |
5637 | bfd_get_filename (dwz->dwz_bfd)); | |
5638 | return false; | |
5639 | } | |
5640 | } | |
5641 | ||
22ca247e | 5642 | create_cus_from_debug_names (dwarf2_per_objfile, *map, dwz_map); |
927aa2e7 | 5643 | |
22ca247e | 5644 | if (map->tu_count != 0) |
927aa2e7 JK |
5645 | { |
5646 | /* We can only handle a single .debug_types when we have an | |
5647 | index. */ | |
5648 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) != 1) | |
5649 | return false; | |
5650 | ||
5651 | dwarf2_section_info *section = VEC_index (dwarf2_section_info_def, | |
5652 | dwarf2_per_objfile->types, 0); | |
5653 | ||
5654 | create_signatured_type_table_from_debug_names | |
22ca247e | 5655 | (dwarf2_per_objfile, *map, section, &dwarf2_per_objfile->abbrev); |
927aa2e7 JK |
5656 | } |
5657 | ||
ed2dc618 SM |
5658 | create_addrmap_from_aranges (dwarf2_per_objfile, |
5659 | &dwarf2_per_objfile->debug_aranges); | |
927aa2e7 | 5660 | |
22ca247e | 5661 | dwarf2_per_objfile->debug_names_table = std::move (map); |
927aa2e7 JK |
5662 | dwarf2_per_objfile->using_index = 1; |
5663 | dwarf2_per_objfile->quick_file_names_table = | |
b76e467d | 5664 | create_quick_file_names_table (dwarf2_per_objfile->all_comp_units.size ()); |
927aa2e7 JK |
5665 | |
5666 | return true; | |
5667 | } | |
5668 | ||
927aa2e7 JK |
5669 | /* Type used to manage iterating over all CUs looking for a symbol for |
5670 | .debug_names. */ | |
5671 | ||
5672 | class dw2_debug_names_iterator | |
5673 | { | |
5674 | public: | |
5675 | /* If WANT_SPECIFIC_BLOCK is true, only look for symbols in block | |
5676 | BLOCK_INDEX. Otherwise BLOCK_INDEX is ignored. */ | |
5677 | dw2_debug_names_iterator (const mapped_debug_names &map, | |
5678 | bool want_specific_block, | |
5679 | block_enum block_index, domain_enum domain, | |
5680 | const char *name) | |
5681 | : m_map (map), m_want_specific_block (want_specific_block), | |
5682 | m_block_index (block_index), m_domain (domain), | |
5683 | m_addr (find_vec_in_debug_names (map, name)) | |
5684 | {} | |
5685 | ||
5686 | dw2_debug_names_iterator (const mapped_debug_names &map, | |
5687 | search_domain search, uint32_t namei) | |
5688 | : m_map (map), | |
5689 | m_search (search), | |
5690 | m_addr (find_vec_in_debug_names (map, namei)) | |
5691 | {} | |
5692 | ||
5693 | /* Return the next matching CU or NULL if there are no more. */ | |
5694 | dwarf2_per_cu_data *next (); | |
5695 | ||
5696 | private: | |
5697 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
5698 | const char *name); | |
5699 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
5700 | uint32_t namei); | |
5701 | ||
5702 | /* The internalized form of .debug_names. */ | |
5703 | const mapped_debug_names &m_map; | |
5704 | ||
5705 | /* If true, only look for symbols that match BLOCK_INDEX. */ | |
5706 | const bool m_want_specific_block = false; | |
5707 | ||
5708 | /* One of GLOBAL_BLOCK or STATIC_BLOCK. | |
5709 | Unused if !WANT_SPECIFIC_BLOCK - FIRST_LOCAL_BLOCK is an invalid | |
5710 | value. */ | |
5711 | const block_enum m_block_index = FIRST_LOCAL_BLOCK; | |
5712 | ||
5713 | /* The kind of symbol we're looking for. */ | |
5714 | const domain_enum m_domain = UNDEF_DOMAIN; | |
5715 | const search_domain m_search = ALL_DOMAIN; | |
5716 | ||
5717 | /* The list of CUs from the index entry of the symbol, or NULL if | |
5718 | not found. */ | |
5719 | const gdb_byte *m_addr; | |
5720 | }; | |
5721 | ||
5722 | const char * | |
5723 | mapped_debug_names::namei_to_name (uint32_t namei) const | |
5724 | { | |
5725 | const ULONGEST namei_string_offs | |
5726 | = extract_unsigned_integer ((name_table_string_offs_reordered | |
5727 | + namei * offset_size), | |
5728 | offset_size, | |
5729 | dwarf5_byte_order); | |
5730 | return read_indirect_string_at_offset | |
ed2dc618 | 5731 | (dwarf2_per_objfile, dwarf2_per_objfile->objfile->obfd, namei_string_offs); |
927aa2e7 JK |
5732 | } |
5733 | ||
5734 | /* Find a slot in .debug_names for the object named NAME. If NAME is | |
5735 | found, return pointer to its pool data. If NAME cannot be found, | |
5736 | return NULL. */ | |
5737 | ||
5738 | const gdb_byte * | |
5739 | dw2_debug_names_iterator::find_vec_in_debug_names | |
5740 | (const mapped_debug_names &map, const char *name) | |
5741 | { | |
5742 | int (*cmp) (const char *, const char *); | |
5743 | ||
5744 | if (current_language->la_language == language_cplus | |
5745 | || current_language->la_language == language_fortran | |
5746 | || current_language->la_language == language_d) | |
5747 | { | |
5748 | /* NAME is already canonical. Drop any qualifiers as | |
5749 | .debug_names does not contain any. */ | |
5750 | ||
5751 | if (strchr (name, '(') != NULL) | |
5752 | { | |
5753 | gdb::unique_xmalloc_ptr<char> without_params | |
5754 | = cp_remove_params (name); | |
5755 | ||
5756 | if (without_params != NULL) | |
5757 | { | |
5758 | name = without_params.get(); | |
5759 | } | |
5760 | } | |
5761 | } | |
5762 | ||
5763 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); | |
5764 | ||
5765 | const uint32_t full_hash = dwarf5_djb_hash (name); | |
5766 | uint32_t namei | |
5767 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5768 | (map.bucket_table_reordered | |
5769 | + (full_hash % map.bucket_count)), 4, | |
5770 | map.dwarf5_byte_order); | |
5771 | if (namei == 0) | |
5772 | return NULL; | |
5773 | --namei; | |
5774 | if (namei >= map.name_count) | |
5775 | { | |
b98664d3 | 5776 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5777 | "[in module %s]"), |
5778 | namei, map.name_count, | |
ed2dc618 | 5779 | objfile_name (map.dwarf2_per_objfile->objfile)); |
927aa2e7 JK |
5780 | return NULL; |
5781 | } | |
5782 | ||
5783 | for (;;) | |
5784 | { | |
5785 | const uint32_t namei_full_hash | |
5786 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5787 | (map.hash_table_reordered + namei), 4, | |
5788 | map.dwarf5_byte_order); | |
5789 | if (full_hash % map.bucket_count != namei_full_hash % map.bucket_count) | |
5790 | return NULL; | |
5791 | ||
5792 | if (full_hash == namei_full_hash) | |
5793 | { | |
5794 | const char *const namei_string = map.namei_to_name (namei); | |
5795 | ||
5796 | #if 0 /* An expensive sanity check. */ | |
5797 | if (namei_full_hash != dwarf5_djb_hash (namei_string)) | |
5798 | { | |
b98664d3 | 5799 | complaint (_("Wrong .debug_names hash for string at index %u " |
927aa2e7 JK |
5800 | "[in module %s]"), |
5801 | namei, objfile_name (dwarf2_per_objfile->objfile)); | |
5802 | return NULL; | |
5803 | } | |
5804 | #endif | |
5805 | ||
5806 | if (cmp (namei_string, name) == 0) | |
5807 | { | |
5808 | const ULONGEST namei_entry_offs | |
5809 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5810 | + namei * map.offset_size), | |
5811 | map.offset_size, map.dwarf5_byte_order); | |
5812 | return map.entry_pool + namei_entry_offs; | |
5813 | } | |
5814 | } | |
5815 | ||
5816 | ++namei; | |
5817 | if (namei >= map.name_count) | |
5818 | return NULL; | |
5819 | } | |
5820 | } | |
5821 | ||
5822 | const gdb_byte * | |
5823 | dw2_debug_names_iterator::find_vec_in_debug_names | |
5824 | (const mapped_debug_names &map, uint32_t namei) | |
5825 | { | |
5826 | if (namei >= map.name_count) | |
5827 | { | |
b98664d3 | 5828 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5829 | "[in module %s]"), |
5830 | namei, map.name_count, | |
ed2dc618 | 5831 | objfile_name (map.dwarf2_per_objfile->objfile)); |
927aa2e7 JK |
5832 | return NULL; |
5833 | } | |
5834 | ||
5835 | const ULONGEST namei_entry_offs | |
5836 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5837 | + namei * map.offset_size), | |
5838 | map.offset_size, map.dwarf5_byte_order); | |
5839 | return map.entry_pool + namei_entry_offs; | |
5840 | } | |
5841 | ||
5842 | /* See dw2_debug_names_iterator. */ | |
5843 | ||
5844 | dwarf2_per_cu_data * | |
5845 | dw2_debug_names_iterator::next () | |
5846 | { | |
5847 | if (m_addr == NULL) | |
5848 | return NULL; | |
5849 | ||
ed2dc618 SM |
5850 | struct dwarf2_per_objfile *dwarf2_per_objfile = m_map.dwarf2_per_objfile; |
5851 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
5852 | bfd *const abfd = objfile->obfd; | |
927aa2e7 JK |
5853 | |
5854 | again: | |
5855 | ||
5856 | unsigned int bytes_read; | |
5857 | const ULONGEST abbrev = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5858 | m_addr += bytes_read; | |
5859 | if (abbrev == 0) | |
5860 | return NULL; | |
5861 | ||
5862 | const auto indexval_it = m_map.abbrev_map.find (abbrev); | |
5863 | if (indexval_it == m_map.abbrev_map.cend ()) | |
5864 | { | |
b98664d3 | 5865 | complaint (_("Wrong .debug_names undefined abbrev code %s " |
927aa2e7 | 5866 | "[in module %s]"), |
ed2dc618 | 5867 | pulongest (abbrev), objfile_name (objfile)); |
927aa2e7 JK |
5868 | return NULL; |
5869 | } | |
5870 | const mapped_debug_names::index_val &indexval = indexval_it->second; | |
5871 | bool have_is_static = false; | |
5872 | bool is_static; | |
5873 | dwarf2_per_cu_data *per_cu = NULL; | |
5874 | for (const mapped_debug_names::index_val::attr &attr : indexval.attr_vec) | |
5875 | { | |
5876 | ULONGEST ull; | |
5877 | switch (attr.form) | |
5878 | { | |
5879 | case DW_FORM_implicit_const: | |
5880 | ull = attr.implicit_const; | |
5881 | break; | |
5882 | case DW_FORM_flag_present: | |
5883 | ull = 1; | |
5884 | break; | |
5885 | case DW_FORM_udata: | |
5886 | ull = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5887 | m_addr += bytes_read; | |
5888 | break; | |
5889 | default: | |
b98664d3 | 5890 | complaint (_("Unsupported .debug_names form %s [in module %s]"), |
927aa2e7 | 5891 | dwarf_form_name (attr.form), |
ed2dc618 | 5892 | objfile_name (objfile)); |
927aa2e7 JK |
5893 | return NULL; |
5894 | } | |
5895 | switch (attr.dw_idx) | |
5896 | { | |
5897 | case DW_IDX_compile_unit: | |
5898 | /* Don't crash on bad data. */ | |
b76e467d | 5899 | if (ull >= dwarf2_per_objfile->all_comp_units.size ()) |
927aa2e7 | 5900 | { |
b98664d3 | 5901 | complaint (_(".debug_names entry has bad CU index %s" |
927aa2e7 JK |
5902 | " [in module %s]"), |
5903 | pulongest (ull), | |
5904 | objfile_name (dwarf2_per_objfile->objfile)); | |
5905 | continue; | |
5906 | } | |
ff4c9fec | 5907 | per_cu = dwarf2_per_objfile->get_cutu (ull); |
927aa2e7 | 5908 | break; |
8af5c486 JK |
5909 | case DW_IDX_type_unit: |
5910 | /* Don't crash on bad data. */ | |
b2bdb8cf | 5911 | if (ull >= dwarf2_per_objfile->all_type_units.size ()) |
8af5c486 | 5912 | { |
b98664d3 | 5913 | complaint (_(".debug_names entry has bad TU index %s" |
8af5c486 JK |
5914 | " [in module %s]"), |
5915 | pulongest (ull), | |
5916 | objfile_name (dwarf2_per_objfile->objfile)); | |
5917 | continue; | |
5918 | } | |
ff4c9fec | 5919 | per_cu = &dwarf2_per_objfile->get_tu (ull)->per_cu; |
8af5c486 | 5920 | break; |
927aa2e7 JK |
5921 | case DW_IDX_GNU_internal: |
5922 | if (!m_map.augmentation_is_gdb) | |
5923 | break; | |
5924 | have_is_static = true; | |
5925 | is_static = true; | |
5926 | break; | |
5927 | case DW_IDX_GNU_external: | |
5928 | if (!m_map.augmentation_is_gdb) | |
5929 | break; | |
5930 | have_is_static = true; | |
5931 | is_static = false; | |
5932 | break; | |
5933 | } | |
5934 | } | |
5935 | ||
5936 | /* Skip if already read in. */ | |
5937 | if (per_cu->v.quick->compunit_symtab) | |
5938 | goto again; | |
5939 | ||
5940 | /* Check static vs global. */ | |
5941 | if (have_is_static) | |
5942 | { | |
5943 | const bool want_static = m_block_index != GLOBAL_BLOCK; | |
5944 | if (m_want_specific_block && want_static != is_static) | |
5945 | goto again; | |
5946 | } | |
5947 | ||
5948 | /* Match dw2_symtab_iter_next, symbol_kind | |
5949 | and debug_names::psymbol_tag. */ | |
5950 | switch (m_domain) | |
5951 | { | |
5952 | case VAR_DOMAIN: | |
5953 | switch (indexval.dwarf_tag) | |
5954 | { | |
5955 | case DW_TAG_variable: | |
5956 | case DW_TAG_subprogram: | |
5957 | /* Some types are also in VAR_DOMAIN. */ | |
5958 | case DW_TAG_typedef: | |
5959 | case DW_TAG_structure_type: | |
5960 | break; | |
5961 | default: | |
5962 | goto again; | |
5963 | } | |
5964 | break; | |
5965 | case STRUCT_DOMAIN: | |
5966 | switch (indexval.dwarf_tag) | |
5967 | { | |
5968 | case DW_TAG_typedef: | |
5969 | case DW_TAG_structure_type: | |
5970 | break; | |
5971 | default: | |
5972 | goto again; | |
5973 | } | |
5974 | break; | |
5975 | case LABEL_DOMAIN: | |
5976 | switch (indexval.dwarf_tag) | |
5977 | { | |
5978 | case 0: | |
5979 | case DW_TAG_variable: | |
5980 | break; | |
5981 | default: | |
5982 | goto again; | |
5983 | } | |
5984 | break; | |
5985 | default: | |
5986 | break; | |
5987 | } | |
5988 | ||
5989 | /* Match dw2_expand_symtabs_matching, symbol_kind and | |
5990 | debug_names::psymbol_tag. */ | |
5991 | switch (m_search) | |
4b514bc8 | 5992 | { |
927aa2e7 JK |
5993 | case VARIABLES_DOMAIN: |
5994 | switch (indexval.dwarf_tag) | |
4b514bc8 | 5995 | { |
927aa2e7 JK |
5996 | case DW_TAG_variable: |
5997 | break; | |
5998 | default: | |
5999 | goto again; | |
4b514bc8 | 6000 | } |
927aa2e7 JK |
6001 | break; |
6002 | case FUNCTIONS_DOMAIN: | |
6003 | switch (indexval.dwarf_tag) | |
4b514bc8 | 6004 | { |
927aa2e7 JK |
6005 | case DW_TAG_subprogram: |
6006 | break; | |
6007 | default: | |
6008 | goto again; | |
4b514bc8 | 6009 | } |
927aa2e7 JK |
6010 | break; |
6011 | case TYPES_DOMAIN: | |
6012 | switch (indexval.dwarf_tag) | |
6013 | { | |
6014 | case DW_TAG_typedef: | |
6015 | case DW_TAG_structure_type: | |
6016 | break; | |
6017 | default: | |
6018 | goto again; | |
6019 | } | |
6020 | break; | |
6021 | default: | |
6022 | break; | |
4b514bc8 | 6023 | } |
927aa2e7 JK |
6024 | |
6025 | return per_cu; | |
4b514bc8 | 6026 | } |
61920122 | 6027 | |
927aa2e7 JK |
6028 | static struct compunit_symtab * |
6029 | dw2_debug_names_lookup_symbol (struct objfile *objfile, int block_index_int, | |
6030 | const char *name, domain_enum domain) | |
4b514bc8 | 6031 | { |
927aa2e7 | 6032 | const block_enum block_index = static_cast<block_enum> (block_index_int); |
ed2dc618 SM |
6033 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6034 | = get_dwarf2_per_objfile (objfile); | |
61920122 | 6035 | |
927aa2e7 JK |
6036 | const auto &mapp = dwarf2_per_objfile->debug_names_table; |
6037 | if (!mapp) | |
61920122 | 6038 | { |
927aa2e7 JK |
6039 | /* index is NULL if OBJF_READNOW. */ |
6040 | return NULL; | |
6041 | } | |
6042 | const auto &map = *mapp; | |
9291a0cd | 6043 | |
927aa2e7 JK |
6044 | dw2_debug_names_iterator iter (map, true /* want_specific_block */, |
6045 | block_index, domain, name); | |
9703b513 | 6046 | |
927aa2e7 JK |
6047 | struct compunit_symtab *stab_best = NULL; |
6048 | struct dwarf2_per_cu_data *per_cu; | |
6049 | while ((per_cu = iter.next ()) != NULL) | |
6050 | { | |
6051 | struct symbol *sym, *with_opaque = NULL; | |
58f0c718 | 6052 | struct compunit_symtab *stab = dw2_instantiate_symtab (per_cu, false); |
927aa2e7 JK |
6053 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
6054 | struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); | |
9703b513 | 6055 | |
927aa2e7 JK |
6056 | sym = block_find_symbol (block, name, domain, |
6057 | block_find_non_opaque_type_preferred, | |
6058 | &with_opaque); | |
9703b513 | 6059 | |
927aa2e7 JK |
6060 | /* Some caution must be observed with overloaded functions and |
6061 | methods, since the index will not contain any overload | |
6062 | information (but NAME might contain it). */ | |
a3ec0bb1 | 6063 | |
927aa2e7 JK |
6064 | if (sym != NULL |
6065 | && strcmp_iw (SYMBOL_SEARCH_NAME (sym), name) == 0) | |
6066 | return stab; | |
6067 | if (with_opaque != NULL | |
6068 | && strcmp_iw (SYMBOL_SEARCH_NAME (with_opaque), name) == 0) | |
6069 | stab_best = stab; | |
9703b513 | 6070 | |
927aa2e7 | 6071 | /* Keep looking through other CUs. */ |
9703b513 TT |
6072 | } |
6073 | ||
927aa2e7 | 6074 | return stab_best; |
9703b513 TT |
6075 | } |
6076 | ||
927aa2e7 JK |
6077 | /* This dumps minimal information about .debug_names. It is called |
6078 | via "mt print objfiles". The gdb.dwarf2/gdb-index.exp testcase | |
6079 | uses this to verify that .debug_names has been loaded. */ | |
9291a0cd | 6080 | |
927aa2e7 JK |
6081 | static void |
6082 | dw2_debug_names_dump (struct objfile *objfile) | |
6083 | { | |
ed2dc618 SM |
6084 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6085 | = get_dwarf2_per_objfile (objfile); | |
6086 | ||
927aa2e7 JK |
6087 | gdb_assert (dwarf2_per_objfile->using_index); |
6088 | printf_filtered (".debug_names:"); | |
6089 | if (dwarf2_per_objfile->debug_names_table) | |
6090 | printf_filtered (" exists\n"); | |
6091 | else | |
6092 | printf_filtered (" faked for \"readnow\"\n"); | |
6093 | printf_filtered ("\n"); | |
9291a0cd TT |
6094 | } |
6095 | ||
9291a0cd | 6096 | static void |
927aa2e7 JK |
6097 | dw2_debug_names_expand_symtabs_for_function (struct objfile *objfile, |
6098 | const char *func_name) | |
9291a0cd | 6099 | { |
ed2dc618 SM |
6100 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6101 | = get_dwarf2_per_objfile (objfile); | |
ae2de4f8 | 6102 | |
927aa2e7 JK |
6103 | /* dwarf2_per_objfile->debug_names_table is NULL if OBJF_READNOW. */ |
6104 | if (dwarf2_per_objfile->debug_names_table) | |
24c79950 | 6105 | { |
927aa2e7 | 6106 | const mapped_debug_names &map = *dwarf2_per_objfile->debug_names_table; |
24c79950 | 6107 | |
927aa2e7 JK |
6108 | /* Note: It doesn't matter what we pass for block_index here. */ |
6109 | dw2_debug_names_iterator iter (map, false /* want_specific_block */, | |
6110 | GLOBAL_BLOCK, VAR_DOMAIN, func_name); | |
24c79950 | 6111 | |
927aa2e7 JK |
6112 | struct dwarf2_per_cu_data *per_cu; |
6113 | while ((per_cu = iter.next ()) != NULL) | |
58f0c718 | 6114 | dw2_instantiate_symtab (per_cu, false); |
927aa2e7 JK |
6115 | } |
6116 | } | |
24c79950 | 6117 | |
927aa2e7 JK |
6118 | static void |
6119 | dw2_debug_names_expand_symtabs_matching | |
6120 | (struct objfile *objfile, | |
6121 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
6122 | const lookup_name_info &lookup_name, | |
6123 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
6124 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
6125 | enum search_domain kind) | |
6126 | { | |
ed2dc618 SM |
6127 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6128 | = get_dwarf2_per_objfile (objfile); | |
9291a0cd | 6129 | |
927aa2e7 JK |
6130 | /* debug_names_table is NULL if OBJF_READNOW. */ |
6131 | if (!dwarf2_per_objfile->debug_names_table) | |
6132 | return; | |
9291a0cd | 6133 | |
ed2dc618 | 6134 | dw_expand_symtabs_matching_file_matcher (dwarf2_per_objfile, file_matcher); |
24c79950 | 6135 | |
44ed8f3e | 6136 | mapped_debug_names &map = *dwarf2_per_objfile->debug_names_table; |
bbf2f4df | 6137 | |
44ed8f3e PA |
6138 | dw2_expand_symtabs_matching_symbol (map, lookup_name, |
6139 | symbol_matcher, | |
6140 | kind, [&] (offset_type namei) | |
927aa2e7 | 6141 | { |
927aa2e7 JK |
6142 | /* The name was matched, now expand corresponding CUs that were |
6143 | marked. */ | |
6144 | dw2_debug_names_iterator iter (map, kind, namei); | |
bbf2f4df | 6145 | |
927aa2e7 JK |
6146 | struct dwarf2_per_cu_data *per_cu; |
6147 | while ((per_cu = iter.next ()) != NULL) | |
6148 | dw2_expand_symtabs_matching_one (per_cu, file_matcher, | |
6149 | expansion_notify); | |
44ed8f3e | 6150 | }); |
9291a0cd TT |
6151 | } |
6152 | ||
927aa2e7 | 6153 | const struct quick_symbol_functions dwarf2_debug_names_functions = |
9291a0cd TT |
6154 | { |
6155 | dw2_has_symbols, | |
6156 | dw2_find_last_source_symtab, | |
6157 | dw2_forget_cached_source_info, | |
f8eba3c6 | 6158 | dw2_map_symtabs_matching_filename, |
927aa2e7 | 6159 | dw2_debug_names_lookup_symbol, |
9291a0cd | 6160 | dw2_print_stats, |
927aa2e7 | 6161 | dw2_debug_names_dump, |
927aa2e7 | 6162 | dw2_debug_names_expand_symtabs_for_function, |
9291a0cd | 6163 | dw2_expand_all_symtabs, |
652a8996 | 6164 | dw2_expand_symtabs_with_fullname, |
40658b94 | 6165 | dw2_map_matching_symbols, |
927aa2e7 | 6166 | dw2_debug_names_expand_symtabs_matching, |
43f3e411 | 6167 | dw2_find_pc_sect_compunit_symtab, |
71a3c369 | 6168 | NULL, |
9291a0cd TT |
6169 | dw2_map_symbol_filenames |
6170 | }; | |
6171 | ||
4485a1c1 SM |
6172 | /* Get the content of the .gdb_index section of OBJ. SECTION_OWNER should point |
6173 | to either a dwarf2_per_objfile or dwz_file object. */ | |
6174 | ||
6175 | template <typename T> | |
6176 | static gdb::array_view<const gdb_byte> | |
6177 | get_gdb_index_contents_from_section (objfile *obj, T *section_owner) | |
6178 | { | |
6179 | dwarf2_section_info *section = §ion_owner->gdb_index; | |
6180 | ||
6181 | if (dwarf2_section_empty_p (section)) | |
6182 | return {}; | |
6183 | ||
6184 | /* Older elfutils strip versions could keep the section in the main | |
6185 | executable while splitting it for the separate debug info file. */ | |
6186 | if ((get_section_flags (section) & SEC_HAS_CONTENTS) == 0) | |
6187 | return {}; | |
6188 | ||
6189 | dwarf2_read_section (obj, section); | |
6190 | ||
6191 | return {section->buffer, section->size}; | |
6192 | } | |
6193 | ||
87d6a7aa SM |
6194 | /* Lookup the index cache for the contents of the index associated to |
6195 | DWARF2_OBJ. */ | |
6196 | ||
6197 | static gdb::array_view<const gdb_byte> | |
6198 | get_gdb_index_contents_from_cache (objfile *obj, dwarf2_per_objfile *dwarf2_obj) | |
6199 | { | |
6200 | const bfd_build_id *build_id = build_id_bfd_get (obj->obfd); | |
6201 | if (build_id == nullptr) | |
6202 | return {}; | |
6203 | ||
6204 | return global_index_cache.lookup_gdb_index (build_id, | |
6205 | &dwarf2_obj->index_cache_res); | |
6206 | } | |
6207 | ||
6208 | /* Same as the above, but for DWZ. */ | |
6209 | ||
6210 | static gdb::array_view<const gdb_byte> | |
6211 | get_gdb_index_contents_from_cache_dwz (objfile *obj, dwz_file *dwz) | |
6212 | { | |
6213 | const bfd_build_id *build_id = build_id_bfd_get (dwz->dwz_bfd.get ()); | |
6214 | if (build_id == nullptr) | |
6215 | return {}; | |
6216 | ||
6217 | return global_index_cache.lookup_gdb_index (build_id, &dwz->index_cache_res); | |
6218 | } | |
6219 | ||
3c0aa29a | 6220 | /* See symfile.h. */ |
9291a0cd | 6221 | |
3c0aa29a PA |
6222 | bool |
6223 | dwarf2_initialize_objfile (struct objfile *objfile, dw_index_kind *index_kind) | |
9291a0cd | 6224 | { |
ed2dc618 SM |
6225 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6226 | = get_dwarf2_per_objfile (objfile); | |
6227 | ||
9291a0cd TT |
6228 | /* If we're about to read full symbols, don't bother with the |
6229 | indices. In this case we also don't care if some other debug | |
6230 | format is making psymtabs, because they are all about to be | |
6231 | expanded anyway. */ | |
6232 | if ((objfile->flags & OBJF_READNOW)) | |
6233 | { | |
9291a0cd | 6234 | dwarf2_per_objfile->using_index = 1; |
ed2dc618 SM |
6235 | create_all_comp_units (dwarf2_per_objfile); |
6236 | create_all_type_units (dwarf2_per_objfile); | |
b76e467d SM |
6237 | dwarf2_per_objfile->quick_file_names_table |
6238 | = create_quick_file_names_table | |
6239 | (dwarf2_per_objfile->all_comp_units.size ()); | |
9291a0cd | 6240 | |
b76e467d | 6241 | for (int i = 0; i < (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 6242 | + dwarf2_per_objfile->all_type_units.size ()); ++i) |
9291a0cd | 6243 | { |
ff4c9fec | 6244 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (i); |
9291a0cd | 6245 | |
e254ef6a DE |
6246 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
6247 | struct dwarf2_per_cu_quick_data); | |
9291a0cd TT |
6248 | } |
6249 | ||
6250 | /* Return 1 so that gdb sees the "quick" functions. However, | |
6251 | these functions will be no-ops because we will have expanded | |
6252 | all symtabs. */ | |
3c0aa29a PA |
6253 | *index_kind = dw_index_kind::GDB_INDEX; |
6254 | return true; | |
9291a0cd TT |
6255 | } |
6256 | ||
ed2dc618 | 6257 | if (dwarf2_read_debug_names (dwarf2_per_objfile)) |
3c0aa29a PA |
6258 | { |
6259 | *index_kind = dw_index_kind::DEBUG_NAMES; | |
6260 | return true; | |
6261 | } | |
927aa2e7 | 6262 | |
4485a1c1 SM |
6263 | if (dwarf2_read_gdb_index (dwarf2_per_objfile, |
6264 | get_gdb_index_contents_from_section<struct dwarf2_per_objfile>, | |
6265 | get_gdb_index_contents_from_section<dwz_file>)) | |
3c0aa29a PA |
6266 | { |
6267 | *index_kind = dw_index_kind::GDB_INDEX; | |
6268 | return true; | |
6269 | } | |
9291a0cd | 6270 | |
87d6a7aa SM |
6271 | /* ... otherwise, try to find the index in the index cache. */ |
6272 | if (dwarf2_read_gdb_index (dwarf2_per_objfile, | |
6273 | get_gdb_index_contents_from_cache, | |
6274 | get_gdb_index_contents_from_cache_dwz)) | |
6275 | { | |
6276 | global_index_cache.hit (); | |
6277 | *index_kind = dw_index_kind::GDB_INDEX; | |
6278 | return true; | |
6279 | } | |
6280 | ||
6281 | global_index_cache.miss (); | |
3c0aa29a | 6282 | return false; |
9291a0cd TT |
6283 | } |
6284 | ||
6285 | \f | |
6286 | ||
dce234bc PP |
6287 | /* Build a partial symbol table. */ |
6288 | ||
6289 | void | |
f29dff0a | 6290 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 6291 | { |
ed2dc618 SM |
6292 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6293 | = get_dwarf2_per_objfile (objfile); | |
c9bf0622 | 6294 | |
af5bf4ad SM |
6295 | if (objfile->global_psymbols.capacity () == 0 |
6296 | && objfile->static_psymbols.capacity () == 0) | |
6297 | init_psymbol_list (objfile, 1024); | |
c906108c | 6298 | |
492d29ea | 6299 | TRY |
c9bf0622 TT |
6300 | { |
6301 | /* This isn't really ideal: all the data we allocate on the | |
6302 | objfile's obstack is still uselessly kept around. However, | |
6303 | freeing it seems unsafe. */ | |
906768f9 | 6304 | psymtab_discarder psymtabs (objfile); |
ed2dc618 | 6305 | dwarf2_build_psymtabs_hard (dwarf2_per_objfile); |
906768f9 | 6306 | psymtabs.keep (); |
87d6a7aa SM |
6307 | |
6308 | /* (maybe) store an index in the cache. */ | |
6309 | global_index_cache.store (dwarf2_per_objfile); | |
c9bf0622 | 6310 | } |
492d29ea PA |
6311 | CATCH (except, RETURN_MASK_ERROR) |
6312 | { | |
6313 | exception_print (gdb_stderr, except); | |
6314 | } | |
6315 | END_CATCH | |
c906108c | 6316 | } |
c906108c | 6317 | |
1ce1cefd DE |
6318 | /* Return the total length of the CU described by HEADER. */ |
6319 | ||
6320 | static unsigned int | |
6321 | get_cu_length (const struct comp_unit_head *header) | |
6322 | { | |
6323 | return header->initial_length_size + header->length; | |
6324 | } | |
6325 | ||
9c541725 | 6326 | /* Return TRUE if SECT_OFF is within CU_HEADER. */ |
45452591 | 6327 | |
9c541725 PA |
6328 | static inline bool |
6329 | offset_in_cu_p (const comp_unit_head *cu_header, sect_offset sect_off) | |
45452591 | 6330 | { |
9c541725 PA |
6331 | sect_offset bottom = cu_header->sect_off; |
6332 | sect_offset top = cu_header->sect_off + get_cu_length (cu_header); | |
9a619af0 | 6333 | |
9c541725 | 6334 | return sect_off >= bottom && sect_off < top; |
45452591 DE |
6335 | } |
6336 | ||
3b80fe9b DE |
6337 | /* Find the base address of the compilation unit for range lists and |
6338 | location lists. It will normally be specified by DW_AT_low_pc. | |
6339 | In DWARF-3 draft 4, the base address could be overridden by | |
6340 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
6341 | compilation units with discontinuous ranges. */ | |
6342 | ||
6343 | static void | |
6344 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
6345 | { | |
6346 | struct attribute *attr; | |
6347 | ||
6348 | cu->base_known = 0; | |
6349 | cu->base_address = 0; | |
6350 | ||
6351 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
6352 | if (attr) | |
6353 | { | |
31aa7e4e | 6354 | cu->base_address = attr_value_as_address (attr); |
3b80fe9b DE |
6355 | cu->base_known = 1; |
6356 | } | |
6357 | else | |
6358 | { | |
6359 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
6360 | if (attr) | |
6361 | { | |
31aa7e4e | 6362 | cu->base_address = attr_value_as_address (attr); |
3b80fe9b DE |
6363 | cu->base_known = 1; |
6364 | } | |
6365 | } | |
6366 | } | |
6367 | ||
93311388 | 6368 | /* Read in the comp unit header information from the debug_info at info_ptr. |
43988095 | 6369 | Use rcuh_kind::COMPILE as the default type if not known by the caller. |
93311388 DE |
6370 | NOTE: This leaves members offset, first_die_offset to be filled in |
6371 | by the caller. */ | |
107d2387 | 6372 | |
d521ce57 | 6373 | static const gdb_byte * |
107d2387 | 6374 | read_comp_unit_head (struct comp_unit_head *cu_header, |
43988095 JK |
6375 | const gdb_byte *info_ptr, |
6376 | struct dwarf2_section_info *section, | |
6377 | rcuh_kind section_kind) | |
107d2387 AC |
6378 | { |
6379 | int signed_addr; | |
891d2f0b | 6380 | unsigned int bytes_read; |
43988095 JK |
6381 | const char *filename = get_section_file_name (section); |
6382 | bfd *abfd = get_section_bfd_owner (section); | |
c764a876 DE |
6383 | |
6384 | cu_header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
6385 | cu_header->initial_length_size = bytes_read; | |
6386 | cu_header->offset_size = (bytes_read == 4) ? 4 : 8; | |
613e1657 | 6387 | info_ptr += bytes_read; |
107d2387 | 6388 | cu_header->version = read_2_bytes (abfd, info_ptr); |
1ea5da02 TV |
6389 | if (cu_header->version < 2 || cu_header->version > 5) |
6390 | error (_("Dwarf Error: wrong version in compilation unit header " | |
6391 | "(is %d, should be 2, 3, 4 or 5) [in module %s]"), | |
6392 | cu_header->version, filename); | |
107d2387 | 6393 | info_ptr += 2; |
43988095 JK |
6394 | if (cu_header->version < 5) |
6395 | switch (section_kind) | |
6396 | { | |
6397 | case rcuh_kind::COMPILE: | |
6398 | cu_header->unit_type = DW_UT_compile; | |
6399 | break; | |
6400 | case rcuh_kind::TYPE: | |
6401 | cu_header->unit_type = DW_UT_type; | |
6402 | break; | |
6403 | default: | |
6404 | internal_error (__FILE__, __LINE__, | |
6405 | _("read_comp_unit_head: invalid section_kind")); | |
6406 | } | |
6407 | else | |
6408 | { | |
6409 | cu_header->unit_type = static_cast<enum dwarf_unit_type> | |
6410 | (read_1_byte (abfd, info_ptr)); | |
6411 | info_ptr += 1; | |
6412 | switch (cu_header->unit_type) | |
6413 | { | |
6414 | case DW_UT_compile: | |
6415 | if (section_kind != rcuh_kind::COMPILE) | |
6416 | error (_("Dwarf Error: wrong unit_type in compilation unit header " | |
6417 | "(is DW_UT_compile, should be DW_UT_type) [in module %s]"), | |
6418 | filename); | |
6419 | break; | |
6420 | case DW_UT_type: | |
6421 | section_kind = rcuh_kind::TYPE; | |
6422 | break; | |
6423 | default: | |
6424 | error (_("Dwarf Error: wrong unit_type in compilation unit header " | |
6425 | "(is %d, should be %d or %d) [in module %s]"), | |
6426 | cu_header->unit_type, DW_UT_compile, DW_UT_type, filename); | |
6427 | } | |
6428 | ||
6429 | cu_header->addr_size = read_1_byte (abfd, info_ptr); | |
6430 | info_ptr += 1; | |
6431 | } | |
9c541725 PA |
6432 | cu_header->abbrev_sect_off = (sect_offset) read_offset (abfd, info_ptr, |
6433 | cu_header, | |
6434 | &bytes_read); | |
613e1657 | 6435 | info_ptr += bytes_read; |
43988095 JK |
6436 | if (cu_header->version < 5) |
6437 | { | |
6438 | cu_header->addr_size = read_1_byte (abfd, info_ptr); | |
6439 | info_ptr += 1; | |
6440 | } | |
107d2387 AC |
6441 | signed_addr = bfd_get_sign_extend_vma (abfd); |
6442 | if (signed_addr < 0) | |
8e65ff28 | 6443 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 6444 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 | 6445 | cu_header->signed_addr_p = signed_addr; |
c764a876 | 6446 | |
43988095 JK |
6447 | if (section_kind == rcuh_kind::TYPE) |
6448 | { | |
6449 | LONGEST type_offset; | |
6450 | ||
6451 | cu_header->signature = read_8_bytes (abfd, info_ptr); | |
6452 | info_ptr += 8; | |
6453 | ||
6454 | type_offset = read_offset (abfd, info_ptr, cu_header, &bytes_read); | |
6455 | info_ptr += bytes_read; | |
9c541725 PA |
6456 | cu_header->type_cu_offset_in_tu = (cu_offset) type_offset; |
6457 | if (to_underlying (cu_header->type_cu_offset_in_tu) != type_offset) | |
43988095 JK |
6458 | error (_("Dwarf Error: Too big type_offset in compilation unit " |
6459 | "header (is %s) [in module %s]"), plongest (type_offset), | |
6460 | filename); | |
6461 | } | |
6462 | ||
107d2387 AC |
6463 | return info_ptr; |
6464 | } | |
6465 | ||
36586728 TT |
6466 | /* Helper function that returns the proper abbrev section for |
6467 | THIS_CU. */ | |
6468 | ||
6469 | static struct dwarf2_section_info * | |
6470 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
6471 | { | |
6472 | struct dwarf2_section_info *abbrev; | |
ed2dc618 | 6473 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
36586728 TT |
6474 | |
6475 | if (this_cu->is_dwz) | |
ed2dc618 | 6476 | abbrev = &dwarf2_get_dwz_file (dwarf2_per_objfile)->abbrev; |
36586728 TT |
6477 | else |
6478 | abbrev = &dwarf2_per_objfile->abbrev; | |
6479 | ||
6480 | return abbrev; | |
6481 | } | |
6482 | ||
9ff913ba DE |
6483 | /* Subroutine of read_and_check_comp_unit_head and |
6484 | read_and_check_type_unit_head to simplify them. | |
6485 | Perform various error checking on the header. */ | |
6486 | ||
6487 | static void | |
ed2dc618 SM |
6488 | error_check_comp_unit_head (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6489 | struct comp_unit_head *header, | |
4bdcc0c1 DE |
6490 | struct dwarf2_section_info *section, |
6491 | struct dwarf2_section_info *abbrev_section) | |
9ff913ba | 6492 | { |
a32a8923 | 6493 | const char *filename = get_section_file_name (section); |
9ff913ba | 6494 | |
9c541725 | 6495 | if (to_underlying (header->abbrev_sect_off) |
36586728 | 6496 | >= dwarf2_section_size (dwarf2_per_objfile->objfile, abbrev_section)) |
9d8780f0 SM |
6497 | error (_("Dwarf Error: bad offset (%s) in compilation unit header " |
6498 | "(offset %s + 6) [in module %s]"), | |
6499 | sect_offset_str (header->abbrev_sect_off), | |
6500 | sect_offset_str (header->sect_off), | |
9ff913ba DE |
6501 | filename); |
6502 | ||
9c541725 | 6503 | /* Cast to ULONGEST to use 64-bit arithmetic when possible to |
9ff913ba | 6504 | avoid potential 32-bit overflow. */ |
9c541725 | 6505 | if (((ULONGEST) header->sect_off + get_cu_length (header)) |
9ff913ba | 6506 | > section->size) |
9c541725 | 6507 | error (_("Dwarf Error: bad length (0x%x) in compilation unit header " |
9d8780f0 SM |
6508 | "(offset %s + 0) [in module %s]"), |
6509 | header->length, sect_offset_str (header->sect_off), | |
9ff913ba DE |
6510 | filename); |
6511 | } | |
6512 | ||
6513 | /* Read in a CU/TU header and perform some basic error checking. | |
6514 | The contents of the header are stored in HEADER. | |
6515 | The result is a pointer to the start of the first DIE. */ | |
adabb602 | 6516 | |
d521ce57 | 6517 | static const gdb_byte * |
ed2dc618 SM |
6518 | read_and_check_comp_unit_head (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6519 | struct comp_unit_head *header, | |
9ff913ba | 6520 | struct dwarf2_section_info *section, |
4bdcc0c1 | 6521 | struct dwarf2_section_info *abbrev_section, |
d521ce57 | 6522 | const gdb_byte *info_ptr, |
43988095 | 6523 | rcuh_kind section_kind) |
72bf9492 | 6524 | { |
d521ce57 | 6525 | const gdb_byte *beg_of_comp_unit = info_ptr; |
72bf9492 | 6526 | |
9c541725 | 6527 | header->sect_off = (sect_offset) (beg_of_comp_unit - section->buffer); |
adabb602 | 6528 | |
43988095 | 6529 | info_ptr = read_comp_unit_head (header, info_ptr, section, section_kind); |
9ff913ba | 6530 | |
9c541725 | 6531 | header->first_die_cu_offset = (cu_offset) (info_ptr - beg_of_comp_unit); |
348e048f | 6532 | |
ed2dc618 SM |
6533 | error_check_comp_unit_head (dwarf2_per_objfile, header, section, |
6534 | abbrev_section); | |
9ff913ba DE |
6535 | |
6536 | return info_ptr; | |
348e048f DE |
6537 | } |
6538 | ||
f4dc4d17 DE |
6539 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
6540 | ||
6541 | static sect_offset | |
ed2dc618 SM |
6542 | read_abbrev_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6543 | struct dwarf2_section_info *section, | |
9c541725 | 6544 | sect_offset sect_off) |
f4dc4d17 | 6545 | { |
a32a8923 | 6546 | bfd *abfd = get_section_bfd_owner (section); |
d521ce57 | 6547 | const gdb_byte *info_ptr; |
ac298888 | 6548 | unsigned int initial_length_size, offset_size; |
43988095 | 6549 | uint16_t version; |
f4dc4d17 DE |
6550 | |
6551 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
9c541725 | 6552 | info_ptr = section->buffer + to_underlying (sect_off); |
ac298888 | 6553 | read_initial_length (abfd, info_ptr, &initial_length_size); |
f4dc4d17 | 6554 | offset_size = initial_length_size == 4 ? 4 : 8; |
43988095 JK |
6555 | info_ptr += initial_length_size; |
6556 | ||
6557 | version = read_2_bytes (abfd, info_ptr); | |
6558 | info_ptr += 2; | |
6559 | if (version >= 5) | |
6560 | { | |
6561 | /* Skip unit type and address size. */ | |
6562 | info_ptr += 2; | |
6563 | } | |
6564 | ||
9c541725 | 6565 | return (sect_offset) read_offset_1 (abfd, info_ptr, offset_size); |
f4dc4d17 DE |
6566 | } |
6567 | ||
aaa75496 JB |
6568 | /* Allocate a new partial symtab for file named NAME and mark this new |
6569 | partial symtab as being an include of PST. */ | |
6570 | ||
6571 | static void | |
d521ce57 | 6572 | dwarf2_create_include_psymtab (const char *name, struct partial_symtab *pst, |
aaa75496 JB |
6573 | struct objfile *objfile) |
6574 | { | |
6575 | struct partial_symtab *subpst = allocate_psymtab (name, objfile); | |
6576 | ||
fbd9ab74 JK |
6577 | if (!IS_ABSOLUTE_PATH (subpst->filename)) |
6578 | { | |
6579 | /* It shares objfile->objfile_obstack. */ | |
6580 | subpst->dirname = pst->dirname; | |
6581 | } | |
6582 | ||
8d749320 SM |
6583 | subpst->dependencies |
6584 | = XOBNEW (&objfile->objfile_obstack, struct partial_symtab *); | |
aaa75496 JB |
6585 | subpst->dependencies[0] = pst; |
6586 | subpst->number_of_dependencies = 1; | |
6587 | ||
6588 | subpst->globals_offset = 0; | |
6589 | subpst->n_global_syms = 0; | |
6590 | subpst->statics_offset = 0; | |
6591 | subpst->n_static_syms = 0; | |
43f3e411 | 6592 | subpst->compunit_symtab = NULL; |
aaa75496 JB |
6593 | subpst->read_symtab = pst->read_symtab; |
6594 | subpst->readin = 0; | |
6595 | ||
6596 | /* No private part is necessary for include psymtabs. This property | |
6597 | can be used to differentiate between such include psymtabs and | |
10b3939b | 6598 | the regular ones. */ |
58a9656e | 6599 | subpst->read_symtab_private = NULL; |
aaa75496 JB |
6600 | } |
6601 | ||
6602 | /* Read the Line Number Program data and extract the list of files | |
6603 | included by the source file represented by PST. Build an include | |
d85a05f0 | 6604 | partial symtab for each of these included files. */ |
aaa75496 JB |
6605 | |
6606 | static void | |
6607 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 DE |
6608 | struct die_info *die, |
6609 | struct partial_symtab *pst) | |
aaa75496 | 6610 | { |
fff8551c | 6611 | line_header_up lh; |
d85a05f0 | 6612 | struct attribute *attr; |
aaa75496 | 6613 | |
d85a05f0 DJ |
6614 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
6615 | if (attr) | |
9c541725 | 6616 | lh = dwarf_decode_line_header ((sect_offset) DW_UNSND (attr), cu); |
aaa75496 JB |
6617 | if (lh == NULL) |
6618 | return; /* No linetable, so no includes. */ | |
6619 | ||
79748972 TT |
6620 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). Also note |
6621 | that we pass in the raw text_low here; that is ok because we're | |
6622 | only decoding the line table to make include partial symtabs, and | |
6623 | so the addresses aren't really used. */ | |
4ae976d1 | 6624 | dwarf_decode_lines (lh.get (), pst->dirname, cu, pst, |
79748972 | 6625 | pst->raw_text_low (), 1); |
aaa75496 JB |
6626 | } |
6627 | ||
348e048f | 6628 | static hashval_t |
52dc124a | 6629 | hash_signatured_type (const void *item) |
348e048f | 6630 | { |
9a3c8263 SM |
6631 | const struct signatured_type *sig_type |
6632 | = (const struct signatured_type *) item; | |
9a619af0 | 6633 | |
348e048f | 6634 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 6635 | return sig_type->signature; |
348e048f DE |
6636 | } |
6637 | ||
6638 | static int | |
52dc124a | 6639 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f | 6640 | { |
9a3c8263 SM |
6641 | const struct signatured_type *lhs = (const struct signatured_type *) item_lhs; |
6642 | const struct signatured_type *rhs = (const struct signatured_type *) item_rhs; | |
9a619af0 | 6643 | |
348e048f DE |
6644 | return lhs->signature == rhs->signature; |
6645 | } | |
6646 | ||
1fd400ff TT |
6647 | /* Allocate a hash table for signatured types. */ |
6648 | ||
6649 | static htab_t | |
673bfd45 | 6650 | allocate_signatured_type_table (struct objfile *objfile) |
1fd400ff TT |
6651 | { |
6652 | return htab_create_alloc_ex (41, | |
52dc124a DE |
6653 | hash_signatured_type, |
6654 | eq_signatured_type, | |
1fd400ff TT |
6655 | NULL, |
6656 | &objfile->objfile_obstack, | |
6657 | hashtab_obstack_allocate, | |
6658 | dummy_obstack_deallocate); | |
6659 | } | |
6660 | ||
d467dd73 | 6661 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
6662 | |
6663 | static int | |
d467dd73 | 6664 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff | 6665 | { |
9a3c8263 | 6666 | struct signatured_type *sigt = (struct signatured_type *) *slot; |
b2bdb8cf SM |
6667 | std::vector<signatured_type *> *all_type_units |
6668 | = (std::vector<signatured_type *> *) datum; | |
1fd400ff | 6669 | |
b2bdb8cf | 6670 | all_type_units->push_back (sigt); |
1fd400ff TT |
6671 | |
6672 | return 1; | |
6673 | } | |
6674 | ||
78d4d2c5 | 6675 | /* A helper for create_debug_types_hash_table. Read types from SECTION |
43988095 JK |
6676 | and fill them into TYPES_HTAB. It will process only type units, |
6677 | therefore DW_UT_type. */ | |
c88ee1f0 | 6678 | |
78d4d2c5 | 6679 | static void |
ed2dc618 SM |
6680 | create_debug_type_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6681 | struct dwo_file *dwo_file, | |
43988095 JK |
6682 | dwarf2_section_info *section, htab_t &types_htab, |
6683 | rcuh_kind section_kind) | |
348e048f | 6684 | { |
3019eac3 | 6685 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
4bdcc0c1 | 6686 | struct dwarf2_section_info *abbrev_section; |
78d4d2c5 JK |
6687 | bfd *abfd; |
6688 | const gdb_byte *info_ptr, *end_ptr; | |
348e048f | 6689 | |
4bdcc0c1 DE |
6690 | abbrev_section = (dwo_file != NULL |
6691 | ? &dwo_file->sections.abbrev | |
6692 | : &dwarf2_per_objfile->abbrev); | |
6693 | ||
b4f54984 | 6694 | if (dwarf_read_debug) |
43988095 JK |
6695 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", |
6696 | get_section_name (section), | |
a32a8923 | 6697 | get_section_file_name (abbrev_section)); |
09406207 | 6698 | |
78d4d2c5 JK |
6699 | dwarf2_read_section (objfile, section); |
6700 | info_ptr = section->buffer; | |
348e048f | 6701 | |
78d4d2c5 JK |
6702 | if (info_ptr == NULL) |
6703 | return; | |
348e048f | 6704 | |
78d4d2c5 JK |
6705 | /* We can't set abfd until now because the section may be empty or |
6706 | not present, in which case the bfd is unknown. */ | |
6707 | abfd = get_section_bfd_owner (section); | |
348e048f | 6708 | |
78d4d2c5 JK |
6709 | /* We don't use init_cutu_and_read_dies_simple, or some such, here |
6710 | because we don't need to read any dies: the signature is in the | |
6711 | header. */ | |
3019eac3 | 6712 | |
78d4d2c5 JK |
6713 | end_ptr = info_ptr + section->size; |
6714 | while (info_ptr < end_ptr) | |
6715 | { | |
78d4d2c5 JK |
6716 | struct signatured_type *sig_type; |
6717 | struct dwo_unit *dwo_tu; | |
6718 | void **slot; | |
6719 | const gdb_byte *ptr = info_ptr; | |
6720 | struct comp_unit_head header; | |
6721 | unsigned int length; | |
8b70b953 | 6722 | |
9c541725 | 6723 | sect_offset sect_off = (sect_offset) (ptr - section->buffer); |
348e048f | 6724 | |
a49dd8dd JK |
6725 | /* Initialize it due to a false compiler warning. */ |
6726 | header.signature = -1; | |
9c541725 | 6727 | header.type_cu_offset_in_tu = (cu_offset) -1; |
a49dd8dd | 6728 | |
78d4d2c5 JK |
6729 | /* We need to read the type's signature in order to build the hash |
6730 | table, but we don't need anything else just yet. */ | |
348e048f | 6731 | |
ed2dc618 | 6732 | ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, &header, section, |
43988095 | 6733 | abbrev_section, ptr, section_kind); |
348e048f | 6734 | |
78d4d2c5 | 6735 | length = get_cu_length (&header); |
6caca83c | 6736 | |
78d4d2c5 JK |
6737 | /* Skip dummy type units. */ |
6738 | if (ptr >= info_ptr + length | |
43988095 JK |
6739 | || peek_abbrev_code (abfd, ptr) == 0 |
6740 | || header.unit_type != DW_UT_type) | |
78d4d2c5 JK |
6741 | { |
6742 | info_ptr += length; | |
6743 | continue; | |
6744 | } | |
dee91e82 | 6745 | |
78d4d2c5 JK |
6746 | if (types_htab == NULL) |
6747 | { | |
6748 | if (dwo_file) | |
6749 | types_htab = allocate_dwo_unit_table (objfile); | |
6750 | else | |
6751 | types_htab = allocate_signatured_type_table (objfile); | |
6752 | } | |
8b70b953 | 6753 | |
78d4d2c5 JK |
6754 | if (dwo_file) |
6755 | { | |
6756 | sig_type = NULL; | |
6757 | dwo_tu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6758 | struct dwo_unit); | |
6759 | dwo_tu->dwo_file = dwo_file; | |
43988095 | 6760 | dwo_tu->signature = header.signature; |
9c541725 | 6761 | dwo_tu->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 | 6762 | dwo_tu->section = section; |
9c541725 | 6763 | dwo_tu->sect_off = sect_off; |
78d4d2c5 JK |
6764 | dwo_tu->length = length; |
6765 | } | |
6766 | else | |
6767 | { | |
6768 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
6769 | The real type_offset is in the DWO file. */ | |
6770 | dwo_tu = NULL; | |
6771 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6772 | struct signatured_type); | |
43988095 | 6773 | sig_type->signature = header.signature; |
9c541725 | 6774 | sig_type->type_offset_in_tu = header.type_cu_offset_in_tu; |
e3b94546 | 6775 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
78d4d2c5 JK |
6776 | sig_type->per_cu.is_debug_types = 1; |
6777 | sig_type->per_cu.section = section; | |
9c541725 | 6778 | sig_type->per_cu.sect_off = sect_off; |
78d4d2c5 JK |
6779 | sig_type->per_cu.length = length; |
6780 | } | |
6781 | ||
6782 | slot = htab_find_slot (types_htab, | |
6783 | dwo_file ? (void*) dwo_tu : (void *) sig_type, | |
6784 | INSERT); | |
6785 | gdb_assert (slot != NULL); | |
6786 | if (*slot != NULL) | |
6787 | { | |
9c541725 | 6788 | sect_offset dup_sect_off; |
0349ea22 | 6789 | |
3019eac3 DE |
6790 | if (dwo_file) |
6791 | { | |
78d4d2c5 JK |
6792 | const struct dwo_unit *dup_tu |
6793 | = (const struct dwo_unit *) *slot; | |
6794 | ||
9c541725 | 6795 | dup_sect_off = dup_tu->sect_off; |
3019eac3 DE |
6796 | } |
6797 | else | |
6798 | { | |
78d4d2c5 JK |
6799 | const struct signatured_type *dup_tu |
6800 | = (const struct signatured_type *) *slot; | |
6801 | ||
9c541725 | 6802 | dup_sect_off = dup_tu->per_cu.sect_off; |
3019eac3 | 6803 | } |
8b70b953 | 6804 | |
b98664d3 | 6805 | complaint (_("debug type entry at offset %s is duplicate to" |
9d8780f0 SM |
6806 | " the entry at offset %s, signature %s"), |
6807 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
43988095 | 6808 | hex_string (header.signature)); |
78d4d2c5 JK |
6809 | } |
6810 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; | |
3019eac3 | 6811 | |
78d4d2c5 | 6812 | if (dwarf_read_debug > 1) |
9d8780f0 SM |
6813 | fprintf_unfiltered (gdb_stdlog, " offset %s, signature %s\n", |
6814 | sect_offset_str (sect_off), | |
43988095 | 6815 | hex_string (header.signature)); |
3019eac3 | 6816 | |
78d4d2c5 JK |
6817 | info_ptr += length; |
6818 | } | |
6819 | } | |
3019eac3 | 6820 | |
78d4d2c5 JK |
6821 | /* Create the hash table of all entries in the .debug_types |
6822 | (or .debug_types.dwo) section(s). | |
6823 | If reading a DWO file, then DWO_FILE is a pointer to the DWO file object, | |
6824 | otherwise it is NULL. | |
b3c8eb43 | 6825 | |
78d4d2c5 | 6826 | The result is a pointer to the hash table or NULL if there are no types. |
348e048f | 6827 | |
78d4d2c5 | 6828 | Note: This function processes DWO files only, not DWP files. */ |
348e048f | 6829 | |
78d4d2c5 | 6830 | static void |
ed2dc618 SM |
6831 | create_debug_types_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6832 | struct dwo_file *dwo_file, | |
78d4d2c5 JK |
6833 | VEC (dwarf2_section_info_def) *types, |
6834 | htab_t &types_htab) | |
6835 | { | |
6836 | int ix; | |
6837 | struct dwarf2_section_info *section; | |
6838 | ||
6839 | if (VEC_empty (dwarf2_section_info_def, types)) | |
6840 | return; | |
348e048f | 6841 | |
78d4d2c5 JK |
6842 | for (ix = 0; |
6843 | VEC_iterate (dwarf2_section_info_def, types, ix, section); | |
6844 | ++ix) | |
ed2dc618 SM |
6845 | create_debug_type_hash_table (dwarf2_per_objfile, dwo_file, section, |
6846 | types_htab, rcuh_kind::TYPE); | |
3019eac3 DE |
6847 | } |
6848 | ||
6849 | /* Create the hash table of all entries in the .debug_types section, | |
6850 | and initialize all_type_units. | |
6851 | The result is zero if there is an error (e.g. missing .debug_types section), | |
6852 | otherwise non-zero. */ | |
6853 | ||
6854 | static int | |
ed2dc618 | 6855 | create_all_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
3019eac3 | 6856 | { |
78d4d2c5 | 6857 | htab_t types_htab = NULL; |
3019eac3 | 6858 | |
ed2dc618 SM |
6859 | create_debug_type_hash_table (dwarf2_per_objfile, NULL, |
6860 | &dwarf2_per_objfile->info, types_htab, | |
43988095 | 6861 | rcuh_kind::COMPILE); |
ed2dc618 SM |
6862 | create_debug_types_hash_table (dwarf2_per_objfile, NULL, |
6863 | dwarf2_per_objfile->types, types_htab); | |
3019eac3 DE |
6864 | if (types_htab == NULL) |
6865 | { | |
6866 | dwarf2_per_objfile->signatured_types = NULL; | |
6867 | return 0; | |
6868 | } | |
6869 | ||
348e048f DE |
6870 | dwarf2_per_objfile->signatured_types = types_htab; |
6871 | ||
b2bdb8cf SM |
6872 | gdb_assert (dwarf2_per_objfile->all_type_units.empty ()); |
6873 | dwarf2_per_objfile->all_type_units.reserve (htab_elements (types_htab)); | |
6874 | ||
6875 | htab_traverse_noresize (types_htab, add_signatured_type_cu_to_table, | |
6876 | &dwarf2_per_objfile->all_type_units); | |
1fd400ff | 6877 | |
348e048f DE |
6878 | return 1; |
6879 | } | |
6880 | ||
6aa5f3a6 DE |
6881 | /* Add an entry for signature SIG to dwarf2_per_objfile->signatured_types. |
6882 | If SLOT is non-NULL, it is the entry to use in the hash table. | |
6883 | Otherwise we find one. */ | |
6884 | ||
6885 | static struct signatured_type * | |
ed2dc618 SM |
6886 | add_type_unit (struct dwarf2_per_objfile *dwarf2_per_objfile, ULONGEST sig, |
6887 | void **slot) | |
6aa5f3a6 DE |
6888 | { |
6889 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6aa5f3a6 | 6890 | |
b2bdb8cf SM |
6891 | if (dwarf2_per_objfile->all_type_units.size () |
6892 | == dwarf2_per_objfile->all_type_units.capacity ()) | |
6893 | ++dwarf2_per_objfile->tu_stats.nr_all_type_units_reallocs; | |
6aa5f3a6 | 6894 | |
b2bdb8cf SM |
6895 | signatured_type *sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
6896 | struct signatured_type); | |
6897 | ||
6898 | dwarf2_per_objfile->all_type_units.push_back (sig_type); | |
6aa5f3a6 DE |
6899 | sig_type->signature = sig; |
6900 | sig_type->per_cu.is_debug_types = 1; | |
6901 | if (dwarf2_per_objfile->using_index) | |
6902 | { | |
6903 | sig_type->per_cu.v.quick = | |
6904 | OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6905 | struct dwarf2_per_cu_quick_data); | |
6906 | } | |
6907 | ||
6908 | if (slot == NULL) | |
6909 | { | |
6910 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, | |
6911 | sig_type, INSERT); | |
6912 | } | |
6913 | gdb_assert (*slot == NULL); | |
6914 | *slot = sig_type; | |
6915 | /* The rest of sig_type must be filled in by the caller. */ | |
6916 | return sig_type; | |
6917 | } | |
6918 | ||
a2ce51a0 DE |
6919 | /* Subroutine of lookup_dwo_signatured_type and lookup_dwp_signatured_type. |
6920 | Fill in SIG_ENTRY with DWO_ENTRY. */ | |
6921 | ||
6922 | static void | |
ed2dc618 | 6923 | fill_in_sig_entry_from_dwo_entry (struct dwarf2_per_objfile *dwarf2_per_objfile, |
a2ce51a0 DE |
6924 | struct signatured_type *sig_entry, |
6925 | struct dwo_unit *dwo_entry) | |
6926 | { | |
7ee85ab1 | 6927 | /* Make sure we're not clobbering something we don't expect to. */ |
a2ce51a0 DE |
6928 | gdb_assert (! sig_entry->per_cu.queued); |
6929 | gdb_assert (sig_entry->per_cu.cu == NULL); | |
6aa5f3a6 DE |
6930 | if (dwarf2_per_objfile->using_index) |
6931 | { | |
6932 | gdb_assert (sig_entry->per_cu.v.quick != NULL); | |
43f3e411 | 6933 | gdb_assert (sig_entry->per_cu.v.quick->compunit_symtab == NULL); |
6aa5f3a6 DE |
6934 | } |
6935 | else | |
6936 | gdb_assert (sig_entry->per_cu.v.psymtab == NULL); | |
a2ce51a0 | 6937 | gdb_assert (sig_entry->signature == dwo_entry->signature); |
9c541725 | 6938 | gdb_assert (to_underlying (sig_entry->type_offset_in_section) == 0); |
a2ce51a0 | 6939 | gdb_assert (sig_entry->type_unit_group == NULL); |
7ee85ab1 DE |
6940 | gdb_assert (sig_entry->dwo_unit == NULL); |
6941 | ||
6942 | sig_entry->per_cu.section = dwo_entry->section; | |
9c541725 | 6943 | sig_entry->per_cu.sect_off = dwo_entry->sect_off; |
7ee85ab1 DE |
6944 | sig_entry->per_cu.length = dwo_entry->length; |
6945 | sig_entry->per_cu.reading_dwo_directly = 1; | |
e3b94546 | 6946 | sig_entry->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
a2ce51a0 DE |
6947 | sig_entry->type_offset_in_tu = dwo_entry->type_offset_in_tu; |
6948 | sig_entry->dwo_unit = dwo_entry; | |
6949 | } | |
6950 | ||
6951 | /* Subroutine of lookup_signatured_type. | |
7ee85ab1 DE |
6952 | If we haven't read the TU yet, create the signatured_type data structure |
6953 | for a TU to be read in directly from a DWO file, bypassing the stub. | |
6954 | This is the "Stay in DWO Optimization": When there is no DWP file and we're | |
6955 | using .gdb_index, then when reading a CU we want to stay in the DWO file | |
6956 | containing that CU. Otherwise we could end up reading several other DWO | |
6957 | files (due to comdat folding) to process the transitive closure of all the | |
6958 | mentioned TUs, and that can be slow. The current DWO file will have every | |
6959 | type signature that it needs. | |
a2ce51a0 DE |
6960 | We only do this for .gdb_index because in the psymtab case we already have |
6961 | to read all the DWOs to build the type unit groups. */ | |
6962 | ||
6963 | static struct signatured_type * | |
6964 | lookup_dwo_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6965 | { | |
518817b3 SM |
6966 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6967 | = cu->per_cu->dwarf2_per_objfile; | |
a2ce51a0 DE |
6968 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
6969 | struct dwo_file *dwo_file; | |
6970 | struct dwo_unit find_dwo_entry, *dwo_entry; | |
6971 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6972 | void **slot; |
a2ce51a0 DE |
6973 | |
6974 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
6975 | ||
6aa5f3a6 DE |
6976 | /* If TU skeletons have been removed then we may not have read in any |
6977 | TUs yet. */ | |
6978 | if (dwarf2_per_objfile->signatured_types == NULL) | |
6979 | { | |
6980 | dwarf2_per_objfile->signatured_types | |
6981 | = allocate_signatured_type_table (objfile); | |
6982 | } | |
a2ce51a0 DE |
6983 | |
6984 | /* We only ever need to read in one copy of a signatured type. | |
6aa5f3a6 DE |
6985 | Use the global signatured_types array to do our own comdat-folding |
6986 | of types. If this is the first time we're reading this TU, and | |
6987 | the TU has an entry in .gdb_index, replace the recorded data from | |
6988 | .gdb_index with this TU. */ | |
a2ce51a0 | 6989 | |
a2ce51a0 | 6990 | find_sig_entry.signature = sig; |
6aa5f3a6 DE |
6991 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, |
6992 | &find_sig_entry, INSERT); | |
9a3c8263 | 6993 | sig_entry = (struct signatured_type *) *slot; |
7ee85ab1 DE |
6994 | |
6995 | /* We can get here with the TU already read, *or* in the process of being | |
6aa5f3a6 DE |
6996 | read. Don't reassign the global entry to point to this DWO if that's |
6997 | the case. Also note that if the TU is already being read, it may not | |
6998 | have come from a DWO, the program may be a mix of Fission-compiled | |
6999 | code and non-Fission-compiled code. */ | |
7000 | ||
7001 | /* Have we already tried to read this TU? | |
7002 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
7003 | needn't exist in the global table yet). */ | |
7004 | if (sig_entry != NULL && sig_entry->per_cu.tu_read) | |
a2ce51a0 DE |
7005 | return sig_entry; |
7006 | ||
6aa5f3a6 DE |
7007 | /* Note: cu->dwo_unit is the dwo_unit that references this TU, not the |
7008 | dwo_unit of the TU itself. */ | |
7009 | dwo_file = cu->dwo_unit->dwo_file; | |
7010 | ||
a2ce51a0 DE |
7011 | /* Ok, this is the first time we're reading this TU. */ |
7012 | if (dwo_file->tus == NULL) | |
7013 | return NULL; | |
7014 | find_dwo_entry.signature = sig; | |
9a3c8263 | 7015 | dwo_entry = (struct dwo_unit *) htab_find (dwo_file->tus, &find_dwo_entry); |
a2ce51a0 DE |
7016 | if (dwo_entry == NULL) |
7017 | return NULL; | |
7018 | ||
6aa5f3a6 DE |
7019 | /* If the global table doesn't have an entry for this TU, add one. */ |
7020 | if (sig_entry == NULL) | |
ed2dc618 | 7021 | sig_entry = add_type_unit (dwarf2_per_objfile, sig, slot); |
6aa5f3a6 | 7022 | |
ed2dc618 | 7023 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, sig_entry, dwo_entry); |
89e63ee4 | 7024 | sig_entry->per_cu.tu_read = 1; |
a2ce51a0 DE |
7025 | return sig_entry; |
7026 | } | |
7027 | ||
a2ce51a0 DE |
7028 | /* Subroutine of lookup_signatured_type. |
7029 | Look up the type for signature SIG, and if we can't find SIG in .gdb_index | |
6aa5f3a6 DE |
7030 | then try the DWP file. If the TU stub (skeleton) has been removed then |
7031 | it won't be in .gdb_index. */ | |
a2ce51a0 DE |
7032 | |
7033 | static struct signatured_type * | |
7034 | lookup_dwp_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
7035 | { | |
518817b3 SM |
7036 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7037 | = cu->per_cu->dwarf2_per_objfile; | |
a2ce51a0 | 7038 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
ed2dc618 | 7039 | struct dwp_file *dwp_file = get_dwp_file (dwarf2_per_objfile); |
a2ce51a0 DE |
7040 | struct dwo_unit *dwo_entry; |
7041 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 7042 | void **slot; |
a2ce51a0 DE |
7043 | |
7044 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
7045 | gdb_assert (dwp_file != NULL); | |
7046 | ||
6aa5f3a6 DE |
7047 | /* If TU skeletons have been removed then we may not have read in any |
7048 | TUs yet. */ | |
7049 | if (dwarf2_per_objfile->signatured_types == NULL) | |
a2ce51a0 | 7050 | { |
6aa5f3a6 DE |
7051 | dwarf2_per_objfile->signatured_types |
7052 | = allocate_signatured_type_table (objfile); | |
a2ce51a0 DE |
7053 | } |
7054 | ||
6aa5f3a6 DE |
7055 | find_sig_entry.signature = sig; |
7056 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, | |
7057 | &find_sig_entry, INSERT); | |
9a3c8263 | 7058 | sig_entry = (struct signatured_type *) *slot; |
6aa5f3a6 DE |
7059 | |
7060 | /* Have we already tried to read this TU? | |
7061 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
7062 | needn't exist in the global table yet). */ | |
7063 | if (sig_entry != NULL) | |
7064 | return sig_entry; | |
7065 | ||
a2ce51a0 DE |
7066 | if (dwp_file->tus == NULL) |
7067 | return NULL; | |
ed2dc618 | 7068 | dwo_entry = lookup_dwo_unit_in_dwp (dwarf2_per_objfile, dwp_file, NULL, |
57d63ce2 | 7069 | sig, 1 /* is_debug_types */); |
a2ce51a0 DE |
7070 | if (dwo_entry == NULL) |
7071 | return NULL; | |
7072 | ||
ed2dc618 SM |
7073 | sig_entry = add_type_unit (dwarf2_per_objfile, sig, slot); |
7074 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, sig_entry, dwo_entry); | |
a2ce51a0 | 7075 | |
a2ce51a0 DE |
7076 | return sig_entry; |
7077 | } | |
7078 | ||
380bca97 | 7079 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
5a8b3f62 DE |
7080 | Returns NULL if signature SIG is not present in the table. |
7081 | It is up to the caller to complain about this. */ | |
348e048f DE |
7082 | |
7083 | static struct signatured_type * | |
a2ce51a0 | 7084 | lookup_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) |
348e048f | 7085 | { |
518817b3 SM |
7086 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7087 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 7088 | |
a2ce51a0 DE |
7089 | if (cu->dwo_unit |
7090 | && dwarf2_per_objfile->using_index) | |
7091 | { | |
7092 | /* We're in a DWO/DWP file, and we're using .gdb_index. | |
7093 | These cases require special processing. */ | |
ed2dc618 | 7094 | if (get_dwp_file (dwarf2_per_objfile) == NULL) |
a2ce51a0 DE |
7095 | return lookup_dwo_signatured_type (cu, sig); |
7096 | else | |
7097 | return lookup_dwp_signatured_type (cu, sig); | |
7098 | } | |
7099 | else | |
7100 | { | |
7101 | struct signatured_type find_entry, *entry; | |
348e048f | 7102 | |
a2ce51a0 DE |
7103 | if (dwarf2_per_objfile->signatured_types == NULL) |
7104 | return NULL; | |
7105 | find_entry.signature = sig; | |
9a3c8263 SM |
7106 | entry = ((struct signatured_type *) |
7107 | htab_find (dwarf2_per_objfile->signatured_types, &find_entry)); | |
a2ce51a0 DE |
7108 | return entry; |
7109 | } | |
348e048f | 7110 | } |
42e7ad6c DE |
7111 | \f |
7112 | /* Low level DIE reading support. */ | |
348e048f | 7113 | |
d85a05f0 DJ |
7114 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
7115 | ||
7116 | static void | |
7117 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 7118 | struct dwarf2_cu *cu, |
3019eac3 | 7119 | struct dwarf2_section_info *section, |
685af9cd TT |
7120 | struct dwo_file *dwo_file, |
7121 | struct abbrev_table *abbrev_table) | |
d85a05f0 | 7122 | { |
fceca515 | 7123 | gdb_assert (section->readin && section->buffer != NULL); |
a32a8923 | 7124 | reader->abfd = get_section_bfd_owner (section); |
d85a05f0 | 7125 | reader->cu = cu; |
3019eac3 | 7126 | reader->dwo_file = dwo_file; |
dee91e82 DE |
7127 | reader->die_section = section; |
7128 | reader->buffer = section->buffer; | |
f664829e | 7129 | reader->buffer_end = section->buffer + section->size; |
a2ce51a0 | 7130 | reader->comp_dir = NULL; |
685af9cd | 7131 | reader->abbrev_table = abbrev_table; |
d85a05f0 DJ |
7132 | } |
7133 | ||
b0c7bfa9 DE |
7134 | /* Subroutine of init_cutu_and_read_dies to simplify it. |
7135 | Read in the rest of a CU/TU top level DIE from DWO_UNIT. | |
7136 | There's just a lot of work to do, and init_cutu_and_read_dies is big enough | |
7137 | already. | |
7138 | ||
7139 | STUB_COMP_UNIT_DIE is for the stub DIE, we copy over certain attributes | |
7140 | from it to the DIE in the DWO. If NULL we are skipping the stub. | |
a2ce51a0 DE |
7141 | STUB_COMP_DIR is similar to STUB_COMP_UNIT_DIE: When reading a TU directly |
7142 | from the DWO file, bypassing the stub, it contains the DW_AT_comp_dir | |
c54a1dd8 DE |
7143 | attribute of the referencing CU. At most one of STUB_COMP_UNIT_DIE and |
7144 | STUB_COMP_DIR may be non-NULL. | |
b0c7bfa9 DE |
7145 | *RESULT_READER,*RESULT_INFO_PTR,*RESULT_COMP_UNIT_DIE,*RESULT_HAS_CHILDREN |
7146 | are filled in with the info of the DIE from the DWO file. | |
685af9cd TT |
7147 | *RESULT_DWO_ABBREV_TABLE will be filled in with the abbrev table allocated |
7148 | from the dwo. Since *RESULT_READER references this abbrev table, it must be | |
7149 | kept around for at least as long as *RESULT_READER. | |
7150 | ||
b0c7bfa9 DE |
7151 | The result is non-zero if a valid (non-dummy) DIE was found. */ |
7152 | ||
7153 | static int | |
7154 | read_cutu_die_from_dwo (struct dwarf2_per_cu_data *this_cu, | |
7155 | struct dwo_unit *dwo_unit, | |
b0c7bfa9 | 7156 | struct die_info *stub_comp_unit_die, |
a2ce51a0 | 7157 | const char *stub_comp_dir, |
b0c7bfa9 | 7158 | struct die_reader_specs *result_reader, |
d521ce57 | 7159 | const gdb_byte **result_info_ptr, |
b0c7bfa9 | 7160 | struct die_info **result_comp_unit_die, |
685af9cd TT |
7161 | int *result_has_children, |
7162 | abbrev_table_up *result_dwo_abbrev_table) | |
b0c7bfa9 | 7163 | { |
ed2dc618 | 7164 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
b0c7bfa9 DE |
7165 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
7166 | struct dwarf2_cu *cu = this_cu->cu; | |
b0c7bfa9 | 7167 | bfd *abfd; |
d521ce57 | 7168 | const gdb_byte *begin_info_ptr, *info_ptr; |
b0c7bfa9 DE |
7169 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; |
7170 | int i,num_extra_attrs; | |
7171 | struct dwarf2_section_info *dwo_abbrev_section; | |
7172 | struct attribute *attr; | |
7173 | struct die_info *comp_unit_die; | |
7174 | ||
b0aeadb3 DE |
7175 | /* At most one of these may be provided. */ |
7176 | gdb_assert ((stub_comp_unit_die != NULL) + (stub_comp_dir != NULL) <= 1); | |
a2ce51a0 | 7177 | |
b0c7bfa9 DE |
7178 | /* These attributes aren't processed until later: |
7179 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
0d60c288 DE |
7180 | DW_AT_comp_dir is used now, to find the DWO file, but it is also |
7181 | referenced later. However, these attributes are found in the stub | |
7182 | which we won't have later. In order to not impose this complication | |
7183 | on the rest of the code, we read them here and copy them to the | |
7184 | DWO CU/TU die. */ | |
b0c7bfa9 DE |
7185 | |
7186 | stmt_list = NULL; | |
7187 | low_pc = NULL; | |
7188 | high_pc = NULL; | |
7189 | ranges = NULL; | |
7190 | comp_dir = NULL; | |
7191 | ||
7192 | if (stub_comp_unit_die != NULL) | |
7193 | { | |
7194 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
7195 | DWO file. */ | |
7196 | if (! this_cu->is_debug_types) | |
7197 | stmt_list = dwarf2_attr (stub_comp_unit_die, DW_AT_stmt_list, cu); | |
7198 | low_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_low_pc, cu); | |
7199 | high_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_high_pc, cu); | |
7200 | ranges = dwarf2_attr (stub_comp_unit_die, DW_AT_ranges, cu); | |
7201 | comp_dir = dwarf2_attr (stub_comp_unit_die, DW_AT_comp_dir, cu); | |
7202 | ||
7203 | /* There should be a DW_AT_addr_base attribute here (if needed). | |
7204 | We need the value before we can process DW_FORM_GNU_addr_index. */ | |
7205 | cu->addr_base = 0; | |
7206 | attr = dwarf2_attr (stub_comp_unit_die, DW_AT_GNU_addr_base, cu); | |
7207 | if (attr) | |
7208 | cu->addr_base = DW_UNSND (attr); | |
7209 | ||
7210 | /* There should be a DW_AT_ranges_base attribute here (if needed). | |
7211 | We need the value before we can process DW_AT_ranges. */ | |
7212 | cu->ranges_base = 0; | |
7213 | attr = dwarf2_attr (stub_comp_unit_die, DW_AT_GNU_ranges_base, cu); | |
7214 | if (attr) | |
7215 | cu->ranges_base = DW_UNSND (attr); | |
7216 | } | |
a2ce51a0 DE |
7217 | else if (stub_comp_dir != NULL) |
7218 | { | |
7219 | /* Reconstruct the comp_dir attribute to simplify the code below. */ | |
8d749320 | 7220 | comp_dir = XOBNEW (&cu->comp_unit_obstack, struct attribute); |
a2ce51a0 DE |
7221 | comp_dir->name = DW_AT_comp_dir; |
7222 | comp_dir->form = DW_FORM_string; | |
7223 | DW_STRING_IS_CANONICAL (comp_dir) = 0; | |
7224 | DW_STRING (comp_dir) = stub_comp_dir; | |
7225 | } | |
b0c7bfa9 DE |
7226 | |
7227 | /* Set up for reading the DWO CU/TU. */ | |
7228 | cu->dwo_unit = dwo_unit; | |
685af9cd | 7229 | dwarf2_section_info *section = dwo_unit->section; |
b0c7bfa9 | 7230 | dwarf2_read_section (objfile, section); |
a32a8923 | 7231 | abfd = get_section_bfd_owner (section); |
9c541725 PA |
7232 | begin_info_ptr = info_ptr = (section->buffer |
7233 | + to_underlying (dwo_unit->sect_off)); | |
b0c7bfa9 | 7234 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; |
b0c7bfa9 DE |
7235 | |
7236 | if (this_cu->is_debug_types) | |
7237 | { | |
b0c7bfa9 DE |
7238 | struct signatured_type *sig_type = (struct signatured_type *) this_cu; |
7239 | ||
ed2dc618 SM |
7240 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7241 | &cu->header, section, | |
b0c7bfa9 | 7242 | dwo_abbrev_section, |
43988095 | 7243 | info_ptr, rcuh_kind::TYPE); |
a2ce51a0 | 7244 | /* This is not an assert because it can be caused by bad debug info. */ |
43988095 | 7245 | if (sig_type->signature != cu->header.signature) |
a2ce51a0 DE |
7246 | { |
7247 | error (_("Dwarf Error: signature mismatch %s vs %s while reading" | |
9d8780f0 | 7248 | " TU at offset %s [in module %s]"), |
a2ce51a0 | 7249 | hex_string (sig_type->signature), |
43988095 | 7250 | hex_string (cu->header.signature), |
9d8780f0 | 7251 | sect_offset_str (dwo_unit->sect_off), |
a2ce51a0 DE |
7252 | bfd_get_filename (abfd)); |
7253 | } | |
9c541725 | 7254 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
7255 | /* For DWOs coming from DWP files, we don't know the CU length |
7256 | nor the type's offset in the TU until now. */ | |
7257 | dwo_unit->length = get_cu_length (&cu->header); | |
9c541725 | 7258 | dwo_unit->type_offset_in_tu = cu->header.type_cu_offset_in_tu; |
b0c7bfa9 DE |
7259 | |
7260 | /* Establish the type offset that can be used to lookup the type. | |
7261 | For DWO files, we don't know it until now. */ | |
9c541725 PA |
7262 | sig_type->type_offset_in_section |
7263 | = dwo_unit->sect_off + to_underlying (dwo_unit->type_offset_in_tu); | |
b0c7bfa9 DE |
7264 | } |
7265 | else | |
7266 | { | |
ed2dc618 SM |
7267 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7268 | &cu->header, section, | |
b0c7bfa9 | 7269 | dwo_abbrev_section, |
43988095 | 7270 | info_ptr, rcuh_kind::COMPILE); |
9c541725 | 7271 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
7272 | /* For DWOs coming from DWP files, we don't know the CU length |
7273 | until now. */ | |
7274 | dwo_unit->length = get_cu_length (&cu->header); | |
7275 | } | |
7276 | ||
685af9cd TT |
7277 | *result_dwo_abbrev_table |
7278 | = abbrev_table_read_table (dwarf2_per_objfile, dwo_abbrev_section, | |
7279 | cu->header.abbrev_sect_off); | |
7280 | init_cu_die_reader (result_reader, cu, section, dwo_unit->dwo_file, | |
7281 | result_dwo_abbrev_table->get ()); | |
b0c7bfa9 DE |
7282 | |
7283 | /* Read in the die, but leave space to copy over the attributes | |
7284 | from the stub. This has the benefit of simplifying the rest of | |
7285 | the code - all the work to maintain the illusion of a single | |
7286 | DW_TAG_{compile,type}_unit DIE is done here. */ | |
7287 | num_extra_attrs = ((stmt_list != NULL) | |
7288 | + (low_pc != NULL) | |
7289 | + (high_pc != NULL) | |
7290 | + (ranges != NULL) | |
7291 | + (comp_dir != NULL)); | |
7292 | info_ptr = read_full_die_1 (result_reader, result_comp_unit_die, info_ptr, | |
7293 | result_has_children, num_extra_attrs); | |
7294 | ||
7295 | /* Copy over the attributes from the stub to the DIE we just read in. */ | |
7296 | comp_unit_die = *result_comp_unit_die; | |
7297 | i = comp_unit_die->num_attrs; | |
7298 | if (stmt_list != NULL) | |
7299 | comp_unit_die->attrs[i++] = *stmt_list; | |
7300 | if (low_pc != NULL) | |
7301 | comp_unit_die->attrs[i++] = *low_pc; | |
7302 | if (high_pc != NULL) | |
7303 | comp_unit_die->attrs[i++] = *high_pc; | |
7304 | if (ranges != NULL) | |
7305 | comp_unit_die->attrs[i++] = *ranges; | |
7306 | if (comp_dir != NULL) | |
7307 | comp_unit_die->attrs[i++] = *comp_dir; | |
7308 | comp_unit_die->num_attrs += num_extra_attrs; | |
7309 | ||
b4f54984 | 7310 | if (dwarf_die_debug) |
bf6af496 DE |
7311 | { |
7312 | fprintf_unfiltered (gdb_stdlog, | |
7313 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 7314 | get_section_name (section), |
bf6af496 DE |
7315 | (unsigned) (begin_info_ptr - section->buffer), |
7316 | bfd_get_filename (abfd)); | |
b4f54984 | 7317 | dump_die (comp_unit_die, dwarf_die_debug); |
bf6af496 DE |
7318 | } |
7319 | ||
a2ce51a0 DE |
7320 | /* Save the comp_dir attribute. If there is no DWP file then we'll read |
7321 | TUs by skipping the stub and going directly to the entry in the DWO file. | |
7322 | However, skipping the stub means we won't get DW_AT_comp_dir, so we have | |
7323 | to get it via circuitous means. Blech. */ | |
7324 | if (comp_dir != NULL) | |
7325 | result_reader->comp_dir = DW_STRING (comp_dir); | |
7326 | ||
b0c7bfa9 DE |
7327 | /* Skip dummy compilation units. */ |
7328 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
7329 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
7330 | return 0; | |
7331 | ||
7332 | *result_info_ptr = info_ptr; | |
7333 | return 1; | |
7334 | } | |
7335 | ||
7336 | /* Subroutine of init_cutu_and_read_dies to simplify it. | |
7337 | Look up the DWO unit specified by COMP_UNIT_DIE of THIS_CU. | |
6a506a2d | 7338 | Returns NULL if the specified DWO unit cannot be found. */ |
b0c7bfa9 DE |
7339 | |
7340 | static struct dwo_unit * | |
7341 | lookup_dwo_unit (struct dwarf2_per_cu_data *this_cu, | |
7342 | struct die_info *comp_unit_die) | |
7343 | { | |
7344 | struct dwarf2_cu *cu = this_cu->cu; | |
b0c7bfa9 DE |
7345 | ULONGEST signature; |
7346 | struct dwo_unit *dwo_unit; | |
7347 | const char *comp_dir, *dwo_name; | |
7348 | ||
a2ce51a0 DE |
7349 | gdb_assert (cu != NULL); |
7350 | ||
b0c7bfa9 | 7351 | /* Yeah, we look dwo_name up again, but it simplifies the code. */ |
7d45c7c3 KB |
7352 | dwo_name = dwarf2_string_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); |
7353 | comp_dir = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); | |
b0c7bfa9 DE |
7354 | |
7355 | if (this_cu->is_debug_types) | |
7356 | { | |
7357 | struct signatured_type *sig_type; | |
7358 | ||
7359 | /* Since this_cu is the first member of struct signatured_type, | |
7360 | we can go from a pointer to one to a pointer to the other. */ | |
7361 | sig_type = (struct signatured_type *) this_cu; | |
7362 | signature = sig_type->signature; | |
7363 | dwo_unit = lookup_dwo_type_unit (sig_type, dwo_name, comp_dir); | |
7364 | } | |
7365 | else | |
7366 | { | |
7367 | struct attribute *attr; | |
7368 | ||
7369 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
7370 | if (! attr) | |
7371 | error (_("Dwarf Error: missing dwo_id for dwo_name %s" | |
7372 | " [in module %s]"), | |
e3b94546 | 7373 | dwo_name, objfile_name (this_cu->dwarf2_per_objfile->objfile)); |
b0c7bfa9 DE |
7374 | signature = DW_UNSND (attr); |
7375 | dwo_unit = lookup_dwo_comp_unit (this_cu, dwo_name, comp_dir, | |
7376 | signature); | |
7377 | } | |
7378 | ||
b0c7bfa9 DE |
7379 | return dwo_unit; |
7380 | } | |
7381 | ||
a2ce51a0 | 7382 | /* Subroutine of init_cutu_and_read_dies to simplify it. |
6aa5f3a6 | 7383 | See it for a description of the parameters. |
fcd3b13d | 7384 | Read a TU directly from a DWO file, bypassing the stub. */ |
a2ce51a0 DE |
7385 | |
7386 | static void | |
6aa5f3a6 DE |
7387 | init_tu_and_read_dwo_dies (struct dwarf2_per_cu_data *this_cu, |
7388 | int use_existing_cu, int keep, | |
a2ce51a0 DE |
7389 | die_reader_func_ftype *die_reader_func, |
7390 | void *data) | |
7391 | { | |
fcd3b13d | 7392 | std::unique_ptr<dwarf2_cu> new_cu; |
a2ce51a0 | 7393 | struct signatured_type *sig_type; |
a2ce51a0 DE |
7394 | struct die_reader_specs reader; |
7395 | const gdb_byte *info_ptr; | |
7396 | struct die_info *comp_unit_die; | |
7397 | int has_children; | |
ed2dc618 | 7398 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
a2ce51a0 DE |
7399 | |
7400 | /* Verify we can do the following downcast, and that we have the | |
7401 | data we need. */ | |
7402 | gdb_assert (this_cu->is_debug_types && this_cu->reading_dwo_directly); | |
7403 | sig_type = (struct signatured_type *) this_cu; | |
7404 | gdb_assert (sig_type->dwo_unit != NULL); | |
7405 | ||
6aa5f3a6 DE |
7406 | if (use_existing_cu && this_cu->cu != NULL) |
7407 | { | |
7408 | gdb_assert (this_cu->cu->dwo_unit == sig_type->dwo_unit); | |
6aa5f3a6 DE |
7409 | /* There's no need to do the rereading_dwo_cu handling that |
7410 | init_cutu_and_read_dies does since we don't read the stub. */ | |
7411 | } | |
7412 | else | |
7413 | { | |
7414 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
7415 | gdb_assert (this_cu->cu == NULL); | |
fcd3b13d | 7416 | new_cu.reset (new dwarf2_cu (this_cu)); |
6aa5f3a6 DE |
7417 | } |
7418 | ||
7419 | /* A future optimization, if needed, would be to use an existing | |
7420 | abbrev table. When reading DWOs with skeletonless TUs, all the TUs | |
7421 | could share abbrev tables. */ | |
a2ce51a0 | 7422 | |
685af9cd TT |
7423 | /* The abbreviation table used by READER, this must live at least as long as |
7424 | READER. */ | |
7425 | abbrev_table_up dwo_abbrev_table; | |
7426 | ||
a2ce51a0 | 7427 | if (read_cutu_die_from_dwo (this_cu, sig_type->dwo_unit, |
a2ce51a0 DE |
7428 | NULL /* stub_comp_unit_die */, |
7429 | sig_type->dwo_unit->dwo_file->comp_dir, | |
7430 | &reader, &info_ptr, | |
685af9cd TT |
7431 | &comp_unit_die, &has_children, |
7432 | &dwo_abbrev_table) == 0) | |
a2ce51a0 DE |
7433 | { |
7434 | /* Dummy die. */ | |
a2ce51a0 DE |
7435 | return; |
7436 | } | |
7437 | ||
7438 | /* All the "real" work is done here. */ | |
7439 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
7440 | ||
6aa5f3a6 | 7441 | /* This duplicates the code in init_cutu_and_read_dies, |
a2ce51a0 DE |
7442 | but the alternative is making the latter more complex. |
7443 | This function is only for the special case of using DWO files directly: | |
7444 | no point in overly complicating the general case just to handle this. */ | |
fcd3b13d | 7445 | if (new_cu != NULL && keep) |
a2ce51a0 | 7446 | { |
fcd3b13d SM |
7447 | /* Link this CU into read_in_chain. */ |
7448 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
7449 | dwarf2_per_objfile->read_in_chain = this_cu; | |
7450 | /* The chain owns it now. */ | |
7451 | new_cu.release (); | |
a2ce51a0 | 7452 | } |
a2ce51a0 DE |
7453 | } |
7454 | ||
fd820528 | 7455 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 7456 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 7457 | |
f4dc4d17 DE |
7458 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
7459 | Otherwise the table specified in the comp unit header is read in and used. | |
7460 | This is an optimization for when we already have the abbrev table. | |
7461 | ||
dee91e82 DE |
7462 | If USE_EXISTING_CU is non-zero, and THIS_CU->cu is non-NULL, then use it. |
7463 | Otherwise, a new CU is allocated with xmalloc. | |
7464 | ||
7465 | If KEEP is non-zero, then if we allocated a dwarf2_cu we add it to | |
7466 | read_in_chain. Otherwise the dwarf2_cu data is freed at the end. | |
7467 | ||
7468 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
fd820528 | 7469 | linker) then DIE_READER_FUNC will not get called. */ |
aaa75496 | 7470 | |
70221824 | 7471 | static void |
fd820528 | 7472 | init_cutu_and_read_dies (struct dwarf2_per_cu_data *this_cu, |
f4dc4d17 | 7473 | struct abbrev_table *abbrev_table, |
fd820528 | 7474 | int use_existing_cu, int keep, |
58f0c718 | 7475 | bool skip_partial, |
fd820528 DE |
7476 | die_reader_func_ftype *die_reader_func, |
7477 | void *data) | |
c906108c | 7478 | { |
ed2dc618 | 7479 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
dee91e82 | 7480 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 7481 | struct dwarf2_section_info *section = this_cu->section; |
a32a8923 | 7482 | bfd *abfd = get_section_bfd_owner (section); |
dee91e82 | 7483 | struct dwarf2_cu *cu; |
d521ce57 | 7484 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 7485 | struct die_reader_specs reader; |
d85a05f0 | 7486 | struct die_info *comp_unit_die; |
dee91e82 | 7487 | int has_children; |
d85a05f0 | 7488 | struct attribute *attr; |
dee91e82 | 7489 | struct signatured_type *sig_type = NULL; |
4bdcc0c1 | 7490 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
7491 | /* Non-zero if CU currently points to a DWO file and we need to |
7492 | reread it. When this happens we need to reread the skeleton die | |
a2ce51a0 | 7493 | before we can reread the DWO file (this only applies to CUs, not TUs). */ |
42e7ad6c | 7494 | int rereading_dwo_cu = 0; |
c906108c | 7495 | |
b4f54984 | 7496 | if (dwarf_die_debug) |
9d8780f0 | 7497 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7498 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7499 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7500 | |
dee91e82 DE |
7501 | if (use_existing_cu) |
7502 | gdb_assert (keep); | |
23745b47 | 7503 | |
a2ce51a0 DE |
7504 | /* If we're reading a TU directly from a DWO file, including a virtual DWO |
7505 | file (instead of going through the stub), short-circuit all of this. */ | |
7506 | if (this_cu->reading_dwo_directly) | |
7507 | { | |
7508 | /* Narrow down the scope of possibilities to have to understand. */ | |
7509 | gdb_assert (this_cu->is_debug_types); | |
7510 | gdb_assert (abbrev_table == NULL); | |
6aa5f3a6 DE |
7511 | init_tu_and_read_dwo_dies (this_cu, use_existing_cu, keep, |
7512 | die_reader_func, data); | |
a2ce51a0 DE |
7513 | return; |
7514 | } | |
7515 | ||
dee91e82 DE |
7516 | /* This is cheap if the section is already read in. */ |
7517 | dwarf2_read_section (objfile, section); | |
7518 | ||
9c541725 | 7519 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
36586728 TT |
7520 | |
7521 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 | 7522 | |
fcd3b13d | 7523 | std::unique_ptr<dwarf2_cu> new_cu; |
dee91e82 DE |
7524 | if (use_existing_cu && this_cu->cu != NULL) |
7525 | { | |
7526 | cu = this_cu->cu; | |
42e7ad6c DE |
7527 | /* If this CU is from a DWO file we need to start over, we need to |
7528 | refetch the attributes from the skeleton CU. | |
7529 | This could be optimized by retrieving those attributes from when we | |
7530 | were here the first time: the previous comp_unit_die was stored in | |
7531 | comp_unit_obstack. But there's no data yet that we need this | |
7532 | optimization. */ | |
7533 | if (cu->dwo_unit != NULL) | |
7534 | rereading_dwo_cu = 1; | |
dee91e82 DE |
7535 | } |
7536 | else | |
7537 | { | |
7538 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
7539 | gdb_assert (this_cu->cu == NULL); | |
fcd3b13d SM |
7540 | new_cu.reset (new dwarf2_cu (this_cu)); |
7541 | cu = new_cu.get (); | |
42e7ad6c | 7542 | } |
dee91e82 | 7543 | |
b0c7bfa9 | 7544 | /* Get the header. */ |
9c541725 | 7545 | if (to_underlying (cu->header.first_die_cu_offset) != 0 && !rereading_dwo_cu) |
42e7ad6c DE |
7546 | { |
7547 | /* We already have the header, there's no need to read it in again. */ | |
9c541725 | 7548 | info_ptr += to_underlying (cu->header.first_die_cu_offset); |
42e7ad6c DE |
7549 | } |
7550 | else | |
7551 | { | |
3019eac3 | 7552 | if (this_cu->is_debug_types) |
dee91e82 | 7553 | { |
ed2dc618 SM |
7554 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7555 | &cu->header, section, | |
4bdcc0c1 | 7556 | abbrev_section, info_ptr, |
43988095 | 7557 | rcuh_kind::TYPE); |
dee91e82 | 7558 | |
42e7ad6c DE |
7559 | /* Since per_cu is the first member of struct signatured_type, |
7560 | we can go from a pointer to one to a pointer to the other. */ | |
7561 | sig_type = (struct signatured_type *) this_cu; | |
43988095 | 7562 | gdb_assert (sig_type->signature == cu->header.signature); |
9c541725 PA |
7563 | gdb_assert (sig_type->type_offset_in_tu |
7564 | == cu->header.type_cu_offset_in_tu); | |
7565 | gdb_assert (this_cu->sect_off == cu->header.sect_off); | |
dee91e82 | 7566 | |
42e7ad6c DE |
7567 | /* LENGTH has not been set yet for type units if we're |
7568 | using .gdb_index. */ | |
1ce1cefd | 7569 | this_cu->length = get_cu_length (&cu->header); |
3019eac3 DE |
7570 | |
7571 | /* Establish the type offset that can be used to lookup the type. */ | |
9c541725 PA |
7572 | sig_type->type_offset_in_section = |
7573 | this_cu->sect_off + to_underlying (sig_type->type_offset_in_tu); | |
43988095 JK |
7574 | |
7575 | this_cu->dwarf_version = cu->header.version; | |
dee91e82 DE |
7576 | } |
7577 | else | |
7578 | { | |
ed2dc618 SM |
7579 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7580 | &cu->header, section, | |
4bdcc0c1 | 7581 | abbrev_section, |
43988095 JK |
7582 | info_ptr, |
7583 | rcuh_kind::COMPILE); | |
dee91e82 | 7584 | |
9c541725 | 7585 | gdb_assert (this_cu->sect_off == cu->header.sect_off); |
1ce1cefd | 7586 | gdb_assert (this_cu->length == get_cu_length (&cu->header)); |
43988095 | 7587 | this_cu->dwarf_version = cu->header.version; |
dee91e82 DE |
7588 | } |
7589 | } | |
10b3939b | 7590 | |
6caca83c | 7591 | /* Skip dummy compilation units. */ |
dee91e82 | 7592 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c | 7593 | || peek_abbrev_code (abfd, info_ptr) == 0) |
fcd3b13d | 7594 | return; |
6caca83c | 7595 | |
433df2d4 DE |
7596 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
7597 | And if we need to read them now, make sure they're freed when we're | |
685af9cd TT |
7598 | done (own the table through ABBREV_TABLE_HOLDER). */ |
7599 | abbrev_table_up abbrev_table_holder; | |
f4dc4d17 | 7600 | if (abbrev_table != NULL) |
685af9cd TT |
7601 | gdb_assert (cu->header.abbrev_sect_off == abbrev_table->sect_off); |
7602 | else | |
f4dc4d17 | 7603 | { |
685af9cd TT |
7604 | abbrev_table_holder |
7605 | = abbrev_table_read_table (dwarf2_per_objfile, abbrev_section, | |
7606 | cu->header.abbrev_sect_off); | |
7607 | abbrev_table = abbrev_table_holder.get (); | |
42e7ad6c | 7608 | } |
af703f96 | 7609 | |
dee91e82 | 7610 | /* Read the top level CU/TU die. */ |
685af9cd | 7611 | init_cu_die_reader (&reader, cu, section, NULL, abbrev_table); |
dee91e82 | 7612 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
93311388 | 7613 | |
58f0c718 TT |
7614 | if (skip_partial && comp_unit_die->tag == DW_TAG_partial_unit) |
7615 | return; | |
7616 | ||
b0c7bfa9 | 7617 | /* If we are in a DWO stub, process it and then read in the "real" CU/TU |
685af9cd TT |
7618 | from the DWO file. read_cutu_die_from_dwo will allocate the abbreviation |
7619 | table from the DWO file and pass the ownership over to us. It will be | |
7620 | referenced from READER, so we must make sure to free it after we're done | |
7621 | with READER. | |
7622 | ||
b0c7bfa9 DE |
7623 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains a |
7624 | DWO CU, that this test will fail (the attribute will not be present). */ | |
3019eac3 | 7625 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); |
685af9cd | 7626 | abbrev_table_up dwo_abbrev_table; |
3019eac3 DE |
7627 | if (attr) |
7628 | { | |
3019eac3 | 7629 | struct dwo_unit *dwo_unit; |
b0c7bfa9 | 7630 | struct die_info *dwo_comp_unit_die; |
3019eac3 DE |
7631 | |
7632 | if (has_children) | |
6a506a2d | 7633 | { |
b98664d3 | 7634 | complaint (_("compilation unit with DW_AT_GNU_dwo_name" |
9d8780f0 SM |
7635 | " has children (offset %s) [in module %s]"), |
7636 | sect_offset_str (this_cu->sect_off), | |
7637 | bfd_get_filename (abfd)); | |
6a506a2d | 7638 | } |
b0c7bfa9 | 7639 | dwo_unit = lookup_dwo_unit (this_cu, comp_unit_die); |
6a506a2d | 7640 | if (dwo_unit != NULL) |
3019eac3 | 7641 | { |
6a506a2d | 7642 | if (read_cutu_die_from_dwo (this_cu, dwo_unit, |
a2ce51a0 | 7643 | comp_unit_die, NULL, |
6a506a2d | 7644 | &reader, &info_ptr, |
685af9cd TT |
7645 | &dwo_comp_unit_die, &has_children, |
7646 | &dwo_abbrev_table) == 0) | |
6a506a2d DE |
7647 | { |
7648 | /* Dummy die. */ | |
6a506a2d DE |
7649 | return; |
7650 | } | |
7651 | comp_unit_die = dwo_comp_unit_die; | |
7652 | } | |
7653 | else | |
7654 | { | |
7655 | /* Yikes, we couldn't find the rest of the DIE, we only have | |
7656 | the stub. A complaint has already been logged. There's | |
7657 | not much more we can do except pass on the stub DIE to | |
7658 | die_reader_func. We don't want to throw an error on bad | |
7659 | debug info. */ | |
3019eac3 DE |
7660 | } |
7661 | } | |
7662 | ||
b0c7bfa9 | 7663 | /* All of the above is setup for this call. Yikes. */ |
dee91e82 DE |
7664 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); |
7665 | ||
b0c7bfa9 | 7666 | /* Done, clean up. */ |
fcd3b13d | 7667 | if (new_cu != NULL && keep) |
348e048f | 7668 | { |
fcd3b13d SM |
7669 | /* Link this CU into read_in_chain. */ |
7670 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
7671 | dwarf2_per_objfile->read_in_chain = this_cu; | |
7672 | /* The chain owns it now. */ | |
7673 | new_cu.release (); | |
348e048f | 7674 | } |
dee91e82 DE |
7675 | } |
7676 | ||
33e80786 DE |
7677 | /* Read CU/TU THIS_CU but do not follow DW_AT_GNU_dwo_name if present. |
7678 | DWO_FILE, if non-NULL, is the DWO file to read (the caller is assumed | |
7679 | to have already done the lookup to find the DWO file). | |
dee91e82 DE |
7680 | |
7681 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 7682 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
7683 | |
7684 | We fill in THIS_CU->length. | |
7685 | ||
7686 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
7687 | linker) then DIE_READER_FUNC will not get called. | |
7688 | ||
7689 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
7690 | This is done in order to not leave THIS_CU->cu in a state where we have |
7691 | to care whether it refers to the "main" CU or the DWO CU. */ | |
dee91e82 DE |
7692 | |
7693 | static void | |
7694 | init_cutu_and_read_dies_no_follow (struct dwarf2_per_cu_data *this_cu, | |
3019eac3 | 7695 | struct dwo_file *dwo_file, |
dee91e82 DE |
7696 | die_reader_func_ftype *die_reader_func, |
7697 | void *data) | |
7698 | { | |
ed2dc618 | 7699 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
dee91e82 | 7700 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 7701 | struct dwarf2_section_info *section = this_cu->section; |
a32a8923 | 7702 | bfd *abfd = get_section_bfd_owner (section); |
33e80786 | 7703 | struct dwarf2_section_info *abbrev_section; |
d521ce57 | 7704 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 7705 | struct die_reader_specs reader; |
dee91e82 DE |
7706 | struct die_info *comp_unit_die; |
7707 | int has_children; | |
7708 | ||
b4f54984 | 7709 | if (dwarf_die_debug) |
9d8780f0 | 7710 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7711 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7712 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7713 | |
dee91e82 DE |
7714 | gdb_assert (this_cu->cu == NULL); |
7715 | ||
33e80786 DE |
7716 | abbrev_section = (dwo_file != NULL |
7717 | ? &dwo_file->sections.abbrev | |
7718 | : get_abbrev_section_for_cu (this_cu)); | |
7719 | ||
dee91e82 DE |
7720 | /* This is cheap if the section is already read in. */ |
7721 | dwarf2_read_section (objfile, section); | |
7722 | ||
fcd3b13d | 7723 | struct dwarf2_cu cu (this_cu); |
dee91e82 | 7724 | |
9c541725 | 7725 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
ed2dc618 SM |
7726 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7727 | &cu.header, section, | |
4bdcc0c1 | 7728 | abbrev_section, info_ptr, |
43988095 JK |
7729 | (this_cu->is_debug_types |
7730 | ? rcuh_kind::TYPE | |
7731 | : rcuh_kind::COMPILE)); | |
dee91e82 | 7732 | |
1ce1cefd | 7733 | this_cu->length = get_cu_length (&cu.header); |
dee91e82 DE |
7734 | |
7735 | /* Skip dummy compilation units. */ | |
7736 | if (info_ptr >= begin_info_ptr + this_cu->length | |
7737 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
fcd3b13d | 7738 | return; |
72bf9492 | 7739 | |
685af9cd TT |
7740 | abbrev_table_up abbrev_table |
7741 | = abbrev_table_read_table (dwarf2_per_objfile, abbrev_section, | |
7742 | cu.header.abbrev_sect_off); | |
dee91e82 | 7743 | |
685af9cd | 7744 | init_cu_die_reader (&reader, &cu, section, dwo_file, abbrev_table.get ()); |
dee91e82 DE |
7745 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
7746 | ||
7747 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
dee91e82 DE |
7748 | } |
7749 | ||
3019eac3 DE |
7750 | /* Read a CU/TU, except that this does not look for DW_AT_GNU_dwo_name and |
7751 | does not lookup the specified DWO file. | |
7752 | This cannot be used to read DWO files. | |
dee91e82 DE |
7753 | |
7754 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
7755 | This is done in order to not leave THIS_CU->cu in a state where we have |
7756 | to care whether it refers to the "main" CU or the DWO CU. | |
7757 | We can revisit this if the data shows there's a performance issue. */ | |
dee91e82 DE |
7758 | |
7759 | static void | |
7760 | init_cutu_and_read_dies_simple (struct dwarf2_per_cu_data *this_cu, | |
7761 | die_reader_func_ftype *die_reader_func, | |
7762 | void *data) | |
7763 | { | |
33e80786 | 7764 | init_cutu_and_read_dies_no_follow (this_cu, NULL, die_reader_func, data); |
dee91e82 | 7765 | } |
0018ea6f DE |
7766 | \f |
7767 | /* Type Unit Groups. | |
dee91e82 | 7768 | |
0018ea6f DE |
7769 | Type Unit Groups are a way to collapse the set of all TUs (type units) into |
7770 | a more manageable set. The grouping is done by DW_AT_stmt_list entry | |
7771 | so that all types coming from the same compilation (.o file) are grouped | |
7772 | together. A future step could be to put the types in the same symtab as | |
7773 | the CU the types ultimately came from. */ | |
ff013f42 | 7774 | |
f4dc4d17 DE |
7775 | static hashval_t |
7776 | hash_type_unit_group (const void *item) | |
7777 | { | |
9a3c8263 SM |
7778 | const struct type_unit_group *tu_group |
7779 | = (const struct type_unit_group *) item; | |
f4dc4d17 | 7780 | |
094b34ac | 7781 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 7782 | } |
348e048f DE |
7783 | |
7784 | static int | |
f4dc4d17 | 7785 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 7786 | { |
9a3c8263 SM |
7787 | const struct type_unit_group *lhs = (const struct type_unit_group *) item_lhs; |
7788 | const struct type_unit_group *rhs = (const struct type_unit_group *) item_rhs; | |
348e048f | 7789 | |
094b34ac | 7790 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 7791 | } |
348e048f | 7792 | |
f4dc4d17 DE |
7793 | /* Allocate a hash table for type unit groups. */ |
7794 | ||
7795 | static htab_t | |
ed2dc618 | 7796 | allocate_type_unit_groups_table (struct objfile *objfile) |
f4dc4d17 DE |
7797 | { |
7798 | return htab_create_alloc_ex (3, | |
7799 | hash_type_unit_group, | |
7800 | eq_type_unit_group, | |
7801 | NULL, | |
ed2dc618 | 7802 | &objfile->objfile_obstack, |
f4dc4d17 DE |
7803 | hashtab_obstack_allocate, |
7804 | dummy_obstack_deallocate); | |
7805 | } | |
dee91e82 | 7806 | |
f4dc4d17 DE |
7807 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
7808 | partial symtabs. We combine several TUs per psymtab to not let the size | |
7809 | of any one psymtab grow too big. */ | |
7810 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
7811 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 7812 | |
094b34ac | 7813 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
7814 | Create the type_unit_group object used to hold one or more TUs. */ |
7815 | ||
7816 | static struct type_unit_group * | |
094b34ac | 7817 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 | 7818 | { |
518817b3 SM |
7819 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7820 | = cu->per_cu->dwarf2_per_objfile; | |
f4dc4d17 | 7821 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
094b34ac | 7822 | struct dwarf2_per_cu_data *per_cu; |
f4dc4d17 | 7823 | struct type_unit_group *tu_group; |
f4dc4d17 DE |
7824 | |
7825 | tu_group = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7826 | struct type_unit_group); | |
094b34ac | 7827 | per_cu = &tu_group->per_cu; |
518817b3 | 7828 | per_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
f4dc4d17 | 7829 | |
094b34ac DE |
7830 | if (dwarf2_per_objfile->using_index) |
7831 | { | |
7832 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7833 | struct dwarf2_per_cu_quick_data); | |
094b34ac DE |
7834 | } |
7835 | else | |
7836 | { | |
9c541725 | 7837 | unsigned int line_offset = to_underlying (line_offset_struct); |
094b34ac | 7838 | struct partial_symtab *pst; |
528e1572 | 7839 | std::string name; |
094b34ac DE |
7840 | |
7841 | /* Give the symtab a useful name for debug purposes. */ | |
7842 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
528e1572 SM |
7843 | name = string_printf ("<type_units_%d>", |
7844 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
094b34ac | 7845 | else |
528e1572 | 7846 | name = string_printf ("<type_units_at_0x%x>", line_offset); |
094b34ac | 7847 | |
528e1572 | 7848 | pst = create_partial_symtab (per_cu, name.c_str ()); |
094b34ac | 7849 | pst->anonymous = 1; |
094b34ac | 7850 | } |
f4dc4d17 | 7851 | |
094b34ac | 7852 | tu_group->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7853 | tu_group->hash.line_sect_off = line_offset_struct; |
f4dc4d17 DE |
7854 | |
7855 | return tu_group; | |
7856 | } | |
7857 | ||
094b34ac DE |
7858 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
7859 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
7860 | |
7861 | static struct type_unit_group * | |
ff39bb5e | 7862 | get_type_unit_group (struct dwarf2_cu *cu, const struct attribute *stmt_list) |
f4dc4d17 | 7863 | { |
518817b3 SM |
7864 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7865 | = cu->per_cu->dwarf2_per_objfile; | |
f4dc4d17 DE |
7866 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; |
7867 | struct type_unit_group *tu_group; | |
7868 | void **slot; | |
7869 | unsigned int line_offset; | |
7870 | struct type_unit_group type_unit_group_for_lookup; | |
7871 | ||
7872 | if (dwarf2_per_objfile->type_unit_groups == NULL) | |
7873 | { | |
7874 | dwarf2_per_objfile->type_unit_groups = | |
ed2dc618 | 7875 | allocate_type_unit_groups_table (dwarf2_per_objfile->objfile); |
f4dc4d17 DE |
7876 | } |
7877 | ||
7878 | /* Do we need to create a new group, or can we use an existing one? */ | |
7879 | ||
7880 | if (stmt_list) | |
7881 | { | |
7882 | line_offset = DW_UNSND (stmt_list); | |
7883 | ++tu_stats->nr_symtab_sharers; | |
7884 | } | |
7885 | else | |
7886 | { | |
7887 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
7888 | We can do various things here like create one group per TU or | |
7889 | spread them over multiple groups to split up the expansion work. | |
7890 | To avoid worst case scenarios (too many groups or too large groups) | |
7891 | we, umm, group them in bunches. */ | |
7892 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
7893 | | (tu_stats->nr_stmt_less_type_units | |
7894 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
7895 | ++tu_stats->nr_stmt_less_type_units; | |
7896 | } | |
7897 | ||
094b34ac | 7898 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7899 | type_unit_group_for_lookup.hash.line_sect_off = (sect_offset) line_offset; |
f4dc4d17 DE |
7900 | slot = htab_find_slot (dwarf2_per_objfile->type_unit_groups, |
7901 | &type_unit_group_for_lookup, INSERT); | |
7902 | if (*slot != NULL) | |
7903 | { | |
9a3c8263 | 7904 | tu_group = (struct type_unit_group *) *slot; |
f4dc4d17 DE |
7905 | gdb_assert (tu_group != NULL); |
7906 | } | |
7907 | else | |
7908 | { | |
9c541725 | 7909 | sect_offset line_offset_struct = (sect_offset) line_offset; |
094b34ac | 7910 | tu_group = create_type_unit_group (cu, line_offset_struct); |
f4dc4d17 DE |
7911 | *slot = tu_group; |
7912 | ++tu_stats->nr_symtabs; | |
7913 | } | |
7914 | ||
7915 | return tu_group; | |
7916 | } | |
0018ea6f DE |
7917 | \f |
7918 | /* Partial symbol tables. */ | |
7919 | ||
7920 | /* Create a psymtab named NAME and assign it to PER_CU. | |
7921 | ||
7922 | The caller must fill in the following details: | |
7923 | dirname, textlow, texthigh. */ | |
7924 | ||
7925 | static struct partial_symtab * | |
7926 | create_partial_symtab (struct dwarf2_per_cu_data *per_cu, const char *name) | |
7927 | { | |
e3b94546 | 7928 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
0018ea6f DE |
7929 | struct partial_symtab *pst; |
7930 | ||
18a94d75 | 7931 | pst = start_psymtab_common (objfile, name, 0, |
af5bf4ad SM |
7932 | objfile->global_psymbols, |
7933 | objfile->static_psymbols); | |
0018ea6f DE |
7934 | |
7935 | pst->psymtabs_addrmap_supported = 1; | |
7936 | ||
7937 | /* This is the glue that links PST into GDB's symbol API. */ | |
7938 | pst->read_symtab_private = per_cu; | |
7939 | pst->read_symtab = dwarf2_read_symtab; | |
7940 | per_cu->v.psymtab = pst; | |
7941 | ||
7942 | return pst; | |
7943 | } | |
7944 | ||
b93601f3 TT |
7945 | /* The DATA object passed to process_psymtab_comp_unit_reader has this |
7946 | type. */ | |
7947 | ||
7948 | struct process_psymtab_comp_unit_data | |
7949 | { | |
7950 | /* True if we are reading a DW_TAG_partial_unit. */ | |
7951 | ||
7952 | int want_partial_unit; | |
7953 | ||
7954 | /* The "pretend" language that is used if the CU doesn't declare a | |
7955 | language. */ | |
7956 | ||
7957 | enum language pretend_language; | |
7958 | }; | |
7959 | ||
0018ea6f DE |
7960 | /* die_reader_func for process_psymtab_comp_unit. */ |
7961 | ||
7962 | static void | |
7963 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7964 | const gdb_byte *info_ptr, |
0018ea6f DE |
7965 | struct die_info *comp_unit_die, |
7966 | int has_children, | |
7967 | void *data) | |
7968 | { | |
7969 | struct dwarf2_cu *cu = reader->cu; | |
518817b3 | 7970 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 7971 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
0018ea6f | 7972 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
0018ea6f DE |
7973 | CORE_ADDR baseaddr; |
7974 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
7975 | struct partial_symtab *pst; | |
3a2b436a | 7976 | enum pc_bounds_kind cu_bounds_kind; |
0018ea6f | 7977 | const char *filename; |
9a3c8263 SM |
7978 | struct process_psymtab_comp_unit_data *info |
7979 | = (struct process_psymtab_comp_unit_data *) data; | |
0018ea6f | 7980 | |
b93601f3 | 7981 | if (comp_unit_die->tag == DW_TAG_partial_unit && !info->want_partial_unit) |
0018ea6f DE |
7982 | return; |
7983 | ||
7984 | gdb_assert (! per_cu->is_debug_types); | |
7985 | ||
b93601f3 | 7986 | prepare_one_comp_unit (cu, comp_unit_die, info->pretend_language); |
0018ea6f | 7987 | |
0018ea6f | 7988 | /* Allocate a new partial symbol table structure. */ |
7d45c7c3 KB |
7989 | filename = dwarf2_string_attr (comp_unit_die, DW_AT_name, cu); |
7990 | if (filename == NULL) | |
0018ea6f | 7991 | filename = ""; |
0018ea6f DE |
7992 | |
7993 | pst = create_partial_symtab (per_cu, filename); | |
7994 | ||
7995 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
7d45c7c3 | 7996 | pst->dirname = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
0018ea6f DE |
7997 | |
7998 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
7999 | ||
8000 | dwarf2_find_base_address (comp_unit_die, cu); | |
8001 | ||
8002 | /* Possibly set the default values of LOWPC and HIGHPC from | |
8003 | `DW_AT_ranges'. */ | |
3a2b436a JK |
8004 | cu_bounds_kind = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
8005 | &best_highpc, cu, pst); | |
8006 | if (cu_bounds_kind == PC_BOUNDS_HIGH_LOW && best_lowpc < best_highpc) | |
79748972 TT |
8007 | { |
8008 | CORE_ADDR low | |
8009 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_lowpc + baseaddr) | |
8010 | - baseaddr); | |
8011 | CORE_ADDR high | |
8012 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_highpc + baseaddr) | |
8013 | - baseaddr - 1); | |
8014 | /* Store the contiguous range if it is not empty; it can be | |
8015 | empty for CUs with no code. */ | |
8016 | addrmap_set_empty (objfile->psymtabs_addrmap, low, high, pst); | |
8017 | } | |
0018ea6f DE |
8018 | |
8019 | /* Check if comp unit has_children. | |
8020 | If so, read the rest of the partial symbols from this comp unit. | |
8021 | If not, there's no more debug_info for this comp unit. */ | |
8022 | if (has_children) | |
8023 | { | |
8024 | struct partial_die_info *first_die; | |
8025 | CORE_ADDR lowpc, highpc; | |
8026 | ||
8027 | lowpc = ((CORE_ADDR) -1); | |
8028 | highpc = ((CORE_ADDR) 0); | |
8029 | ||
8030 | first_die = load_partial_dies (reader, info_ptr, 1); | |
8031 | ||
8032 | scan_partial_symbols (first_die, &lowpc, &highpc, | |
e385593e | 8033 | cu_bounds_kind <= PC_BOUNDS_INVALID, cu); |
0018ea6f DE |
8034 | |
8035 | /* If we didn't find a lowpc, set it to highpc to avoid | |
8036 | complaints from `maint check'. */ | |
8037 | if (lowpc == ((CORE_ADDR) -1)) | |
8038 | lowpc = highpc; | |
8039 | ||
8040 | /* If the compilation unit didn't have an explicit address range, | |
8041 | then use the information extracted from its child dies. */ | |
e385593e | 8042 | if (cu_bounds_kind <= PC_BOUNDS_INVALID) |
0018ea6f DE |
8043 | { |
8044 | best_lowpc = lowpc; | |
8045 | best_highpc = highpc; | |
8046 | } | |
8047 | } | |
4ae976d1 | 8048 | pst->set_text_low (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
8049 | best_lowpc + baseaddr) |
8050 | - baseaddr); | |
4ae976d1 | 8051 | pst->set_text_high (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
8052 | best_highpc + baseaddr) |
8053 | - baseaddr); | |
0018ea6f | 8054 | |
8763cede | 8055 | end_psymtab_common (objfile, pst); |
0018ea6f DE |
8056 | |
8057 | if (!VEC_empty (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs)) | |
8058 | { | |
8059 | int i; | |
8060 | int len = VEC_length (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
8061 | struct dwarf2_per_cu_data *iter; | |
8062 | ||
8063 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
8064 | post-pass. */ | |
8065 | pst->number_of_dependencies = len; | |
8d749320 SM |
8066 | pst->dependencies = |
8067 | XOBNEWVEC (&objfile->objfile_obstack, struct partial_symtab *, len); | |
0018ea6f DE |
8068 | for (i = 0; |
8069 | VEC_iterate (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, | |
8070 | i, iter); | |
8071 | ++i) | |
8072 | pst->dependencies[i] = iter->v.psymtab; | |
8073 | ||
8074 | VEC_free (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
8075 | } | |
8076 | ||
8077 | /* Get the list of files included in the current compilation unit, | |
8078 | and build a psymtab for each of them. */ | |
8079 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
8080 | ||
b4f54984 | 8081 | if (dwarf_read_debug) |
0018ea6f DE |
8082 | { |
8083 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
8084 | ||
8085 | fprintf_unfiltered (gdb_stdlog, | |
9d8780f0 | 8086 | "Psymtab for %s unit @%s: %s - %s" |
0018ea6f DE |
8087 | ", %d global, %d static syms\n", |
8088 | per_cu->is_debug_types ? "type" : "comp", | |
9d8780f0 | 8089 | sect_offset_str (per_cu->sect_off), |
79748972 TT |
8090 | paddress (gdbarch, pst->text_low (objfile)), |
8091 | paddress (gdbarch, pst->text_high (objfile)), | |
0018ea6f DE |
8092 | pst->n_global_syms, pst->n_static_syms); |
8093 | } | |
8094 | } | |
8095 | ||
8096 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
8097 | Process compilation unit THIS_CU for a psymtab. */ | |
8098 | ||
8099 | static void | |
8100 | process_psymtab_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
b93601f3 TT |
8101 | int want_partial_unit, |
8102 | enum language pretend_language) | |
0018ea6f DE |
8103 | { |
8104 | /* If this compilation unit was already read in, free the | |
8105 | cached copy in order to read it in again. This is | |
8106 | necessary because we skipped some symbols when we first | |
8107 | read in the compilation unit (see load_partial_dies). | |
8108 | This problem could be avoided, but the benefit is unclear. */ | |
8109 | if (this_cu->cu != NULL) | |
8110 | free_one_cached_comp_unit (this_cu); | |
8111 | ||
f1902523 | 8112 | if (this_cu->is_debug_types) |
58f0c718 TT |
8113 | init_cutu_and_read_dies (this_cu, NULL, 0, 0, false, |
8114 | build_type_psymtabs_reader, NULL); | |
f1902523 JK |
8115 | else |
8116 | { | |
8117 | process_psymtab_comp_unit_data info; | |
8118 | info.want_partial_unit = want_partial_unit; | |
8119 | info.pretend_language = pretend_language; | |
58f0c718 | 8120 | init_cutu_and_read_dies (this_cu, NULL, 0, 0, false, |
f1902523 JK |
8121 | process_psymtab_comp_unit_reader, &info); |
8122 | } | |
0018ea6f DE |
8123 | |
8124 | /* Age out any secondary CUs. */ | |
ed2dc618 | 8125 | age_cached_comp_units (this_cu->dwarf2_per_objfile); |
0018ea6f | 8126 | } |
f4dc4d17 DE |
8127 | |
8128 | /* Reader function for build_type_psymtabs. */ | |
8129 | ||
8130 | static void | |
8131 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
d521ce57 | 8132 | const gdb_byte *info_ptr, |
f4dc4d17 DE |
8133 | struct die_info *type_unit_die, |
8134 | int has_children, | |
8135 | void *data) | |
8136 | { | |
ed2dc618 | 8137 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 8138 | = reader->cu->per_cu->dwarf2_per_objfile; |
f4dc4d17 DE |
8139 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8140 | struct dwarf2_cu *cu = reader->cu; | |
8141 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
0186c6a7 | 8142 | struct signatured_type *sig_type; |
f4dc4d17 DE |
8143 | struct type_unit_group *tu_group; |
8144 | struct attribute *attr; | |
8145 | struct partial_die_info *first_die; | |
8146 | CORE_ADDR lowpc, highpc; | |
8147 | struct partial_symtab *pst; | |
8148 | ||
8149 | gdb_assert (data == NULL); | |
0186c6a7 DE |
8150 | gdb_assert (per_cu->is_debug_types); |
8151 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 DE |
8152 | |
8153 | if (! has_children) | |
8154 | return; | |
8155 | ||
8156 | attr = dwarf2_attr_no_follow (type_unit_die, DW_AT_stmt_list); | |
094b34ac | 8157 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 8158 | |
0186c6a7 | 8159 | VEC_safe_push (sig_type_ptr, tu_group->tus, sig_type); |
f4dc4d17 DE |
8160 | |
8161 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
f4dc4d17 DE |
8162 | pst = create_partial_symtab (per_cu, ""); |
8163 | pst->anonymous = 1; | |
8164 | ||
8165 | first_die = load_partial_dies (reader, info_ptr, 1); | |
8166 | ||
8167 | lowpc = (CORE_ADDR) -1; | |
8168 | highpc = (CORE_ADDR) 0; | |
8169 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
8170 | ||
8763cede | 8171 | end_psymtab_common (objfile, pst); |
f4dc4d17 DE |
8172 | } |
8173 | ||
73051182 DE |
8174 | /* Struct used to sort TUs by their abbreviation table offset. */ |
8175 | ||
8176 | struct tu_abbrev_offset | |
8177 | { | |
b2bdb8cf SM |
8178 | tu_abbrev_offset (signatured_type *sig_type_, sect_offset abbrev_offset_) |
8179 | : sig_type (sig_type_), abbrev_offset (abbrev_offset_) | |
8180 | {} | |
8181 | ||
8182 | signatured_type *sig_type; | |
73051182 DE |
8183 | sect_offset abbrev_offset; |
8184 | }; | |
8185 | ||
484cf504 | 8186 | /* Helper routine for build_type_psymtabs_1, passed to std::sort. */ |
73051182 | 8187 | |
484cf504 TT |
8188 | static bool |
8189 | sort_tu_by_abbrev_offset (const struct tu_abbrev_offset &a, | |
8190 | const struct tu_abbrev_offset &b) | |
73051182 | 8191 | { |
484cf504 | 8192 | return a.abbrev_offset < b.abbrev_offset; |
73051182 DE |
8193 | } |
8194 | ||
8195 | /* Efficiently read all the type units. | |
8196 | This does the bulk of the work for build_type_psymtabs. | |
8197 | ||
8198 | The efficiency is because we sort TUs by the abbrev table they use and | |
8199 | only read each abbrev table once. In one program there are 200K TUs | |
8200 | sharing 8K abbrev tables. | |
8201 | ||
8202 | The main purpose of this function is to support building the | |
8203 | dwarf2_per_objfile->type_unit_groups table. | |
8204 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we | |
8205 | can collapse the search space by grouping them by stmt_list. | |
8206 | The savings can be significant, in the same program from above the 200K TUs | |
8207 | share 8K stmt_list tables. | |
8208 | ||
8209 | FUNC is expected to call get_type_unit_group, which will create the | |
8210 | struct type_unit_group if necessary and add it to | |
8211 | dwarf2_per_objfile->type_unit_groups. */ | |
8212 | ||
8213 | static void | |
ed2dc618 | 8214 | build_type_psymtabs_1 (struct dwarf2_per_objfile *dwarf2_per_objfile) |
73051182 | 8215 | { |
73051182 | 8216 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; |
685af9cd | 8217 | abbrev_table_up abbrev_table; |
73051182 | 8218 | sect_offset abbrev_offset; |
73051182 DE |
8219 | |
8220 | /* It's up to the caller to not call us multiple times. */ | |
8221 | gdb_assert (dwarf2_per_objfile->type_unit_groups == NULL); | |
8222 | ||
b2bdb8cf | 8223 | if (dwarf2_per_objfile->all_type_units.empty ()) |
73051182 DE |
8224 | return; |
8225 | ||
8226 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
8227 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
8228 | read each abbrev table in. | |
8229 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
8230 | This is simpler and efficient enough for now. | |
8231 | ||
8232 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
8233 | symtab to use). Typically TUs with the same abbrev offset have the same | |
8234 | stmt_list value too so in practice this should work well. | |
8235 | ||
8236 | The basic algorithm here is: | |
8237 | ||
8238 | sort TUs by abbrev table | |
8239 | for each TU with same abbrev table: | |
8240 | read abbrev table if first user | |
8241 | read TU top level DIE | |
8242 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
8243 | call FUNC */ | |
8244 | ||
b4f54984 | 8245 | if (dwarf_read_debug) |
73051182 DE |
8246 | fprintf_unfiltered (gdb_stdlog, "Building type unit groups ...\n"); |
8247 | ||
8248 | /* Sort in a separate table to maintain the order of all_type_units | |
8249 | for .gdb_index: TU indices directly index all_type_units. */ | |
b2bdb8cf SM |
8250 | std::vector<tu_abbrev_offset> sorted_by_abbrev; |
8251 | sorted_by_abbrev.reserve (dwarf2_per_objfile->all_type_units.size ()); | |
8252 | ||
8253 | for (signatured_type *sig_type : dwarf2_per_objfile->all_type_units) | |
8254 | sorted_by_abbrev.emplace_back | |
8255 | (sig_type, read_abbrev_offset (dwarf2_per_objfile, | |
8256 | sig_type->per_cu.section, | |
8257 | sig_type->per_cu.sect_off)); | |
73051182 | 8258 | |
484cf504 TT |
8259 | std::sort (sorted_by_abbrev.begin (), sorted_by_abbrev.end (), |
8260 | sort_tu_by_abbrev_offset); | |
73051182 | 8261 | |
9c541725 | 8262 | abbrev_offset = (sect_offset) ~(unsigned) 0; |
73051182 | 8263 | |
b2bdb8cf | 8264 | for (const tu_abbrev_offset &tu : sorted_by_abbrev) |
73051182 | 8265 | { |
73051182 DE |
8266 | /* Switch to the next abbrev table if necessary. */ |
8267 | if (abbrev_table == NULL | |
b2bdb8cf | 8268 | || tu.abbrev_offset != abbrev_offset) |
73051182 | 8269 | { |
b2bdb8cf | 8270 | abbrev_offset = tu.abbrev_offset; |
73051182 | 8271 | abbrev_table = |
ed2dc618 SM |
8272 | abbrev_table_read_table (dwarf2_per_objfile, |
8273 | &dwarf2_per_objfile->abbrev, | |
73051182 DE |
8274 | abbrev_offset); |
8275 | ++tu_stats->nr_uniq_abbrev_tables; | |
8276 | } | |
8277 | ||
b2bdb8cf | 8278 | init_cutu_and_read_dies (&tu.sig_type->per_cu, abbrev_table.get (), |
58f0c718 | 8279 | 0, 0, false, build_type_psymtabs_reader, NULL); |
73051182 | 8280 | } |
6aa5f3a6 | 8281 | } |
73051182 | 8282 | |
6aa5f3a6 DE |
8283 | /* Print collected type unit statistics. */ |
8284 | ||
8285 | static void | |
ed2dc618 | 8286 | print_tu_stats (struct dwarf2_per_objfile *dwarf2_per_objfile) |
6aa5f3a6 DE |
8287 | { |
8288 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
8289 | ||
8290 | fprintf_unfiltered (gdb_stdlog, "Type unit statistics:\n"); | |
b2bdb8cf SM |
8291 | fprintf_unfiltered (gdb_stdlog, " %zu TUs\n", |
8292 | dwarf2_per_objfile->all_type_units.size ()); | |
6aa5f3a6 DE |
8293 | fprintf_unfiltered (gdb_stdlog, " %d uniq abbrev tables\n", |
8294 | tu_stats->nr_uniq_abbrev_tables); | |
8295 | fprintf_unfiltered (gdb_stdlog, " %d symtabs from stmt_list entries\n", | |
8296 | tu_stats->nr_symtabs); | |
8297 | fprintf_unfiltered (gdb_stdlog, " %d symtab sharers\n", | |
8298 | tu_stats->nr_symtab_sharers); | |
8299 | fprintf_unfiltered (gdb_stdlog, " %d type units without a stmt_list\n", | |
8300 | tu_stats->nr_stmt_less_type_units); | |
8301 | fprintf_unfiltered (gdb_stdlog, " %d all_type_units reallocs\n", | |
8302 | tu_stats->nr_all_type_units_reallocs); | |
73051182 DE |
8303 | } |
8304 | ||
f4dc4d17 DE |
8305 | /* Traversal function for build_type_psymtabs. */ |
8306 | ||
8307 | static int | |
8308 | build_type_psymtab_dependencies (void **slot, void *info) | |
8309 | { | |
ed2dc618 SM |
8310 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8311 | = (struct dwarf2_per_objfile *) info; | |
f4dc4d17 DE |
8312 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8313 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; | |
094b34ac | 8314 | struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu; |
f4dc4d17 | 8315 | struct partial_symtab *pst = per_cu->v.psymtab; |
0186c6a7 DE |
8316 | int len = VEC_length (sig_type_ptr, tu_group->tus); |
8317 | struct signatured_type *iter; | |
f4dc4d17 DE |
8318 | int i; |
8319 | ||
8320 | gdb_assert (len > 0); | |
0186c6a7 | 8321 | gdb_assert (IS_TYPE_UNIT_GROUP (per_cu)); |
f4dc4d17 DE |
8322 | |
8323 | pst->number_of_dependencies = len; | |
8d749320 SM |
8324 | pst->dependencies = |
8325 | XOBNEWVEC (&objfile->objfile_obstack, struct partial_symtab *, len); | |
f4dc4d17 | 8326 | for (i = 0; |
0186c6a7 | 8327 | VEC_iterate (sig_type_ptr, tu_group->tus, i, iter); |
f4dc4d17 DE |
8328 | ++i) |
8329 | { | |
0186c6a7 DE |
8330 | gdb_assert (iter->per_cu.is_debug_types); |
8331 | pst->dependencies[i] = iter->per_cu.v.psymtab; | |
796a7ff8 | 8332 | iter->type_unit_group = tu_group; |
f4dc4d17 DE |
8333 | } |
8334 | ||
0186c6a7 | 8335 | VEC_free (sig_type_ptr, tu_group->tus); |
348e048f DE |
8336 | |
8337 | return 1; | |
8338 | } | |
8339 | ||
8340 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
8341 | Build partial symbol tables for the .debug_types comp-units. */ | |
8342 | ||
8343 | static void | |
ed2dc618 | 8344 | build_type_psymtabs (struct dwarf2_per_objfile *dwarf2_per_objfile) |
348e048f | 8345 | { |
ed2dc618 | 8346 | if (! create_all_type_units (dwarf2_per_objfile)) |
348e048f DE |
8347 | return; |
8348 | ||
ed2dc618 | 8349 | build_type_psymtabs_1 (dwarf2_per_objfile); |
6aa5f3a6 | 8350 | } |
f4dc4d17 | 8351 | |
6aa5f3a6 DE |
8352 | /* Traversal function for process_skeletonless_type_unit. |
8353 | Read a TU in a DWO file and build partial symbols for it. */ | |
8354 | ||
8355 | static int | |
8356 | process_skeletonless_type_unit (void **slot, void *info) | |
8357 | { | |
8358 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
ed2dc618 SM |
8359 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8360 | = (struct dwarf2_per_objfile *) info; | |
6aa5f3a6 DE |
8361 | struct signatured_type find_entry, *entry; |
8362 | ||
8363 | /* If this TU doesn't exist in the global table, add it and read it in. */ | |
8364 | ||
8365 | if (dwarf2_per_objfile->signatured_types == NULL) | |
8366 | { | |
8367 | dwarf2_per_objfile->signatured_types | |
ed2dc618 | 8368 | = allocate_signatured_type_table (dwarf2_per_objfile->objfile); |
6aa5f3a6 DE |
8369 | } |
8370 | ||
8371 | find_entry.signature = dwo_unit->signature; | |
8372 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, &find_entry, | |
8373 | INSERT); | |
8374 | /* If we've already seen this type there's nothing to do. What's happening | |
8375 | is we're doing our own version of comdat-folding here. */ | |
8376 | if (*slot != NULL) | |
8377 | return 1; | |
8378 | ||
8379 | /* This does the job that create_all_type_units would have done for | |
8380 | this TU. */ | |
ed2dc618 SM |
8381 | entry = add_type_unit (dwarf2_per_objfile, dwo_unit->signature, slot); |
8382 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, entry, dwo_unit); | |
6aa5f3a6 DE |
8383 | *slot = entry; |
8384 | ||
8385 | /* This does the job that build_type_psymtabs_1 would have done. */ | |
58f0c718 | 8386 | init_cutu_and_read_dies (&entry->per_cu, NULL, 0, 0, false, |
6aa5f3a6 DE |
8387 | build_type_psymtabs_reader, NULL); |
8388 | ||
8389 | return 1; | |
8390 | } | |
8391 | ||
8392 | /* Traversal function for process_skeletonless_type_units. */ | |
8393 | ||
8394 | static int | |
8395 | process_dwo_file_for_skeletonless_type_units (void **slot, void *info) | |
8396 | { | |
8397 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
8398 | ||
8399 | if (dwo_file->tus != NULL) | |
8400 | { | |
8401 | htab_traverse_noresize (dwo_file->tus, | |
8402 | process_skeletonless_type_unit, info); | |
8403 | } | |
8404 | ||
8405 | return 1; | |
8406 | } | |
8407 | ||
8408 | /* Scan all TUs of DWO files, verifying we've processed them. | |
8409 | This is needed in case a TU was emitted without its skeleton. | |
8410 | Note: This can't be done until we know what all the DWO files are. */ | |
8411 | ||
8412 | static void | |
ed2dc618 | 8413 | process_skeletonless_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
6aa5f3a6 DE |
8414 | { |
8415 | /* Skeletonless TUs in DWP files without .gdb_index is not supported yet. */ | |
ed2dc618 | 8416 | if (get_dwp_file (dwarf2_per_objfile) == NULL |
6aa5f3a6 DE |
8417 | && dwarf2_per_objfile->dwo_files != NULL) |
8418 | { | |
8419 | htab_traverse_noresize (dwarf2_per_objfile->dwo_files, | |
8420 | process_dwo_file_for_skeletonless_type_units, | |
ed2dc618 | 8421 | dwarf2_per_objfile); |
6aa5f3a6 | 8422 | } |
348e048f DE |
8423 | } |
8424 | ||
ed2dc618 | 8425 | /* Compute the 'user' field for each psymtab in DWARF2_PER_OBJFILE. */ |
95554aad TT |
8426 | |
8427 | static void | |
ed2dc618 | 8428 | set_partial_user (struct dwarf2_per_objfile *dwarf2_per_objfile) |
95554aad | 8429 | { |
b76e467d | 8430 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
95554aad | 8431 | { |
95554aad | 8432 | struct partial_symtab *pst = per_cu->v.psymtab; |
95554aad | 8433 | |
36586728 TT |
8434 | if (pst == NULL) |
8435 | continue; | |
8436 | ||
b76e467d | 8437 | for (int j = 0; j < pst->number_of_dependencies; ++j) |
95554aad TT |
8438 | { |
8439 | /* Set the 'user' field only if it is not already set. */ | |
8440 | if (pst->dependencies[j]->user == NULL) | |
8441 | pst->dependencies[j]->user = pst; | |
8442 | } | |
8443 | } | |
8444 | } | |
8445 | ||
93311388 DE |
8446 | /* Build the partial symbol table by doing a quick pass through the |
8447 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 8448 | |
93311388 | 8449 | static void |
ed2dc618 | 8450 | dwarf2_build_psymtabs_hard (struct dwarf2_per_objfile *dwarf2_per_objfile) |
93311388 | 8451 | { |
ed2dc618 | 8452 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
93311388 | 8453 | |
b4f54984 | 8454 | if (dwarf_read_debug) |
45cfd468 DE |
8455 | { |
8456 | fprintf_unfiltered (gdb_stdlog, "Building psymtabs of objfile %s ...\n", | |
4262abfb | 8457 | objfile_name (objfile)); |
45cfd468 DE |
8458 | } |
8459 | ||
98bfdba5 PA |
8460 | dwarf2_per_objfile->reading_partial_symbols = 1; |
8461 | ||
be391dca | 8462 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
91c24f0a | 8463 | |
93311388 DE |
8464 | /* Any cached compilation units will be linked by the per-objfile |
8465 | read_in_chain. Make sure to free them when we're done. */ | |
11ed8cad | 8466 | free_cached_comp_units freer (dwarf2_per_objfile); |
72bf9492 | 8467 | |
ed2dc618 | 8468 | build_type_psymtabs (dwarf2_per_objfile); |
348e048f | 8469 | |
ed2dc618 | 8470 | create_all_comp_units (dwarf2_per_objfile); |
c906108c | 8471 | |
60606b2c TT |
8472 | /* Create a temporary address map on a temporary obstack. We later |
8473 | copy this to the final obstack. */ | |
8268c778 | 8474 | auto_obstack temp_obstack; |
791afaa2 TT |
8475 | |
8476 | scoped_restore save_psymtabs_addrmap | |
8477 | = make_scoped_restore (&objfile->psymtabs_addrmap, | |
8478 | addrmap_create_mutable (&temp_obstack)); | |
72bf9492 | 8479 | |
b76e467d SM |
8480 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
8481 | process_psymtab_comp_unit (per_cu, 0, language_minimal); | |
ff013f42 | 8482 | |
6aa5f3a6 | 8483 | /* This has to wait until we read the CUs, we need the list of DWOs. */ |
ed2dc618 | 8484 | process_skeletonless_type_units (dwarf2_per_objfile); |
6aa5f3a6 DE |
8485 | |
8486 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
8487 | if (dwarf2_per_objfile->type_unit_groups != NULL) | |
8488 | { | |
8489 | htab_traverse_noresize (dwarf2_per_objfile->type_unit_groups, | |
ed2dc618 | 8490 | build_type_psymtab_dependencies, dwarf2_per_objfile); |
6aa5f3a6 DE |
8491 | } |
8492 | ||
b4f54984 | 8493 | if (dwarf_read_debug) |
ed2dc618 | 8494 | print_tu_stats (dwarf2_per_objfile); |
6aa5f3a6 | 8495 | |
ed2dc618 | 8496 | set_partial_user (dwarf2_per_objfile); |
95554aad | 8497 | |
ff013f42 JK |
8498 | objfile->psymtabs_addrmap = addrmap_create_fixed (objfile->psymtabs_addrmap, |
8499 | &objfile->objfile_obstack); | |
791afaa2 TT |
8500 | /* At this point we want to keep the address map. */ |
8501 | save_psymtabs_addrmap.release (); | |
ff013f42 | 8502 | |
b4f54984 | 8503 | if (dwarf_read_debug) |
45cfd468 | 8504 | fprintf_unfiltered (gdb_stdlog, "Done building psymtabs of %s\n", |
4262abfb | 8505 | objfile_name (objfile)); |
ae038cb0 DJ |
8506 | } |
8507 | ||
3019eac3 | 8508 | /* die_reader_func for load_partial_comp_unit. */ |
ae038cb0 DJ |
8509 | |
8510 | static void | |
dee91e82 | 8511 | load_partial_comp_unit_reader (const struct die_reader_specs *reader, |
d521ce57 | 8512 | const gdb_byte *info_ptr, |
dee91e82 DE |
8513 | struct die_info *comp_unit_die, |
8514 | int has_children, | |
8515 | void *data) | |
ae038cb0 | 8516 | { |
dee91e82 | 8517 | struct dwarf2_cu *cu = reader->cu; |
ae038cb0 | 8518 | |
95554aad | 8519 | prepare_one_comp_unit (cu, comp_unit_die, language_minimal); |
ae038cb0 | 8520 | |
ae038cb0 DJ |
8521 | /* Check if comp unit has_children. |
8522 | If so, read the rest of the partial symbols from this comp unit. | |
0963b4bd | 8523 | If not, there's no more debug_info for this comp unit. */ |
d85a05f0 | 8524 | if (has_children) |
dee91e82 DE |
8525 | load_partial_dies (reader, info_ptr, 0); |
8526 | } | |
98bfdba5 | 8527 | |
dee91e82 DE |
8528 | /* Load the partial DIEs for a secondary CU into memory. |
8529 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 8530 | |
dee91e82 DE |
8531 | static void |
8532 | load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu) | |
8533 | { | |
58f0c718 | 8534 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, false, |
f4dc4d17 | 8535 | load_partial_comp_unit_reader, NULL); |
ae038cb0 DJ |
8536 | } |
8537 | ||
ae038cb0 | 8538 | static void |
ed2dc618 | 8539 | read_comp_units_from_section (struct dwarf2_per_objfile *dwarf2_per_objfile, |
36586728 | 8540 | struct dwarf2_section_info *section, |
f1902523 | 8541 | struct dwarf2_section_info *abbrev_section, |
b76e467d | 8542 | unsigned int is_dwz) |
ae038cb0 | 8543 | { |
d521ce57 | 8544 | const gdb_byte *info_ptr; |
ed2dc618 | 8545 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
be391dca | 8546 | |
b4f54984 | 8547 | if (dwarf_read_debug) |
bf6af496 | 8548 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s\n", |
a32a8923 DE |
8549 | get_section_name (section), |
8550 | get_section_file_name (section)); | |
bf6af496 | 8551 | |
36586728 | 8552 | dwarf2_read_section (objfile, section); |
ae038cb0 | 8553 | |
36586728 | 8554 | info_ptr = section->buffer; |
6e70227d | 8555 | |
36586728 | 8556 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 8557 | { |
ae038cb0 | 8558 | struct dwarf2_per_cu_data *this_cu; |
ae038cb0 | 8559 | |
9c541725 | 8560 | sect_offset sect_off = (sect_offset) (info_ptr - section->buffer); |
ae038cb0 | 8561 | |
f1902523 | 8562 | comp_unit_head cu_header; |
ed2dc618 SM |
8563 | read_and_check_comp_unit_head (dwarf2_per_objfile, &cu_header, section, |
8564 | abbrev_section, info_ptr, | |
8565 | rcuh_kind::COMPILE); | |
ae038cb0 DJ |
8566 | |
8567 | /* Save the compilation unit for later lookup. */ | |
f1902523 JK |
8568 | if (cu_header.unit_type != DW_UT_type) |
8569 | { | |
8570 | this_cu = XOBNEW (&objfile->objfile_obstack, | |
8571 | struct dwarf2_per_cu_data); | |
8572 | memset (this_cu, 0, sizeof (*this_cu)); | |
8573 | } | |
8574 | else | |
8575 | { | |
8576 | auto sig_type = XOBNEW (&objfile->objfile_obstack, | |
8577 | struct signatured_type); | |
8578 | memset (sig_type, 0, sizeof (*sig_type)); | |
8579 | sig_type->signature = cu_header.signature; | |
8580 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
8581 | this_cu = &sig_type->per_cu; | |
8582 | } | |
8583 | this_cu->is_debug_types = (cu_header.unit_type == DW_UT_type); | |
9c541725 | 8584 | this_cu->sect_off = sect_off; |
f1902523 | 8585 | this_cu->length = cu_header.length + cu_header.initial_length_size; |
36586728 | 8586 | this_cu->is_dwz = is_dwz; |
e3b94546 | 8587 | this_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
8a0459fd | 8588 | this_cu->section = section; |
ae038cb0 | 8589 | |
b76e467d | 8590 | dwarf2_per_objfile->all_comp_units.push_back (this_cu); |
ae038cb0 DJ |
8591 | |
8592 | info_ptr = info_ptr + this_cu->length; | |
8593 | } | |
36586728 TT |
8594 | } |
8595 | ||
8596 | /* Create a list of all compilation units in OBJFILE. | |
8597 | This is only done for -readnow and building partial symtabs. */ | |
8598 | ||
8599 | static void | |
ed2dc618 | 8600 | create_all_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
36586728 | 8601 | { |
b76e467d | 8602 | gdb_assert (dwarf2_per_objfile->all_comp_units.empty ()); |
ed2dc618 | 8603 | read_comp_units_from_section (dwarf2_per_objfile, &dwarf2_per_objfile->info, |
b76e467d | 8604 | &dwarf2_per_objfile->abbrev, 0); |
36586728 | 8605 | |
b76e467d | 8606 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
4db1a1dc | 8607 | if (dwz != NULL) |
ed2dc618 | 8608 | read_comp_units_from_section (dwarf2_per_objfile, &dwz->info, &dwz->abbrev, |
b76e467d | 8609 | 1); |
c906108c SS |
8610 | } |
8611 | ||
5734ee8b | 8612 | /* Process all loaded DIEs for compilation unit CU, starting at |
cdc07690 | 8613 | FIRST_DIE. The caller should pass SET_ADDRMAP == 1 if the compilation |
5734ee8b | 8614 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or |
cdc07690 YQ |
8615 | DW_AT_ranges). See the comments of add_partial_subprogram on how |
8616 | SET_ADDRMAP is used and how *LOWPC and *HIGHPC are updated. */ | |
c906108c | 8617 | |
72bf9492 DJ |
8618 | static void |
8619 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
cdc07690 YQ |
8620 | CORE_ADDR *highpc, int set_addrmap, |
8621 | struct dwarf2_cu *cu) | |
c906108c | 8622 | { |
72bf9492 | 8623 | struct partial_die_info *pdi; |
c906108c | 8624 | |
91c24f0a DC |
8625 | /* Now, march along the PDI's, descending into ones which have |
8626 | interesting children but skipping the children of the other ones, | |
8627 | until we reach the end of the compilation unit. */ | |
c906108c | 8628 | |
72bf9492 | 8629 | pdi = first_die; |
91c24f0a | 8630 | |
72bf9492 DJ |
8631 | while (pdi != NULL) |
8632 | { | |
52356b79 | 8633 | pdi->fixup (cu); |
c906108c | 8634 | |
f55ee35c | 8635 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
8636 | children, so we need to look at them. Ditto for anonymous |
8637 | enums. */ | |
933c6fe4 | 8638 | |
72bf9492 | 8639 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
95554aad | 8640 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
b1dc1806 XR |
8641 | || pdi->tag == DW_TAG_imported_unit |
8642 | || pdi->tag == DW_TAG_inlined_subroutine) | |
c906108c | 8643 | { |
72bf9492 | 8644 | switch (pdi->tag) |
c906108c SS |
8645 | { |
8646 | case DW_TAG_subprogram: | |
b1dc1806 | 8647 | case DW_TAG_inlined_subroutine: |
cdc07690 | 8648 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
c906108c | 8649 | break; |
72929c62 | 8650 | case DW_TAG_constant: |
c906108c SS |
8651 | case DW_TAG_variable: |
8652 | case DW_TAG_typedef: | |
91c24f0a | 8653 | case DW_TAG_union_type: |
72bf9492 | 8654 | if (!pdi->is_declaration) |
63d06c5c | 8655 | { |
72bf9492 | 8656 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
8657 | } |
8658 | break; | |
c906108c | 8659 | case DW_TAG_class_type: |
680b30c7 | 8660 | case DW_TAG_interface_type: |
c906108c | 8661 | case DW_TAG_structure_type: |
72bf9492 | 8662 | if (!pdi->is_declaration) |
c906108c | 8663 | { |
72bf9492 | 8664 | add_partial_symbol (pdi, cu); |
c906108c | 8665 | } |
b7fee5a3 KS |
8666 | if ((cu->language == language_rust |
8667 | || cu->language == language_cplus) && pdi->has_children) | |
e98c9e7c TT |
8668 | scan_partial_symbols (pdi->die_child, lowpc, highpc, |
8669 | set_addrmap, cu); | |
c906108c | 8670 | break; |
91c24f0a | 8671 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
8672 | if (!pdi->is_declaration) |
8673 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
8674 | break; |
8675 | case DW_TAG_base_type: | |
a02abb62 | 8676 | case DW_TAG_subrange_type: |
c906108c | 8677 | /* File scope base type definitions are added to the partial |
c5aa993b | 8678 | symbol table. */ |
72bf9492 | 8679 | add_partial_symbol (pdi, cu); |
c906108c | 8680 | break; |
d9fa45fe | 8681 | case DW_TAG_namespace: |
cdc07690 | 8682 | add_partial_namespace (pdi, lowpc, highpc, set_addrmap, cu); |
91c24f0a | 8683 | break; |
5d7cb8df | 8684 | case DW_TAG_module: |
cdc07690 | 8685 | add_partial_module (pdi, lowpc, highpc, set_addrmap, cu); |
5d7cb8df | 8686 | break; |
95554aad TT |
8687 | case DW_TAG_imported_unit: |
8688 | { | |
8689 | struct dwarf2_per_cu_data *per_cu; | |
8690 | ||
f4dc4d17 DE |
8691 | /* For now we don't handle imported units in type units. */ |
8692 | if (cu->per_cu->is_debug_types) | |
8693 | { | |
8694 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
8695 | " supported in type units [in module %s]"), | |
518817b3 | 8696 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
f4dc4d17 DE |
8697 | } |
8698 | ||
e3b94546 SM |
8699 | per_cu = dwarf2_find_containing_comp_unit |
8700 | (pdi->d.sect_off, pdi->is_dwz, | |
518817b3 | 8701 | cu->per_cu->dwarf2_per_objfile); |
95554aad TT |
8702 | |
8703 | /* Go read the partial unit, if needed. */ | |
8704 | if (per_cu->v.psymtab == NULL) | |
b93601f3 | 8705 | process_psymtab_comp_unit (per_cu, 1, cu->language); |
95554aad | 8706 | |
f4dc4d17 | 8707 | VEC_safe_push (dwarf2_per_cu_ptr, |
796a7ff8 | 8708 | cu->per_cu->imported_symtabs, per_cu); |
95554aad TT |
8709 | } |
8710 | break; | |
74921315 KS |
8711 | case DW_TAG_imported_declaration: |
8712 | add_partial_symbol (pdi, cu); | |
8713 | break; | |
c906108c SS |
8714 | default: |
8715 | break; | |
8716 | } | |
8717 | } | |
8718 | ||
72bf9492 DJ |
8719 | /* If the die has a sibling, skip to the sibling. */ |
8720 | ||
8721 | pdi = pdi->die_sibling; | |
8722 | } | |
8723 | } | |
8724 | ||
8725 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 8726 | |
72bf9492 | 8727 | Normally, this is simple. For C++, the parent DIE's fully scoped |
9c37b5ae | 8728 | name is concatenated with "::" and the partial DIE's name. |
72bf9492 DJ |
8729 | Enumerators are an exception; they use the scope of their parent |
8730 | enumeration type, i.e. the name of the enumeration type is not | |
8731 | prepended to the enumerator. | |
91c24f0a | 8732 | |
72bf9492 DJ |
8733 | There are two complexities. One is DW_AT_specification; in this |
8734 | case "parent" means the parent of the target of the specification, | |
8735 | instead of the direct parent of the DIE. The other is compilers | |
8736 | which do not emit DW_TAG_namespace; in this case we try to guess | |
8737 | the fully qualified name of structure types from their members' | |
8738 | linkage names. This must be done using the DIE's children rather | |
8739 | than the children of any DW_AT_specification target. We only need | |
8740 | to do this for structures at the top level, i.e. if the target of | |
8741 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
8742 | have a parent. */ | |
8743 | ||
8744 | /* Compute the scope prefix associated with PDI's parent, in | |
8745 | compilation unit CU. The result will be allocated on CU's | |
8746 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
8747 | field. NULL is returned if no prefix is necessary. */ | |
15d034d0 | 8748 | static const char * |
72bf9492 DJ |
8749 | partial_die_parent_scope (struct partial_die_info *pdi, |
8750 | struct dwarf2_cu *cu) | |
8751 | { | |
15d034d0 | 8752 | const char *grandparent_scope; |
72bf9492 | 8753 | struct partial_die_info *parent, *real_pdi; |
91c24f0a | 8754 | |
72bf9492 DJ |
8755 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
8756 | then this means the parent of the specification DIE. */ | |
8757 | ||
8758 | real_pdi = pdi; | |
72bf9492 | 8759 | while (real_pdi->has_specification) |
36586728 TT |
8760 | real_pdi = find_partial_die (real_pdi->spec_offset, |
8761 | real_pdi->spec_is_dwz, cu); | |
72bf9492 DJ |
8762 | |
8763 | parent = real_pdi->die_parent; | |
8764 | if (parent == NULL) | |
8765 | return NULL; | |
8766 | ||
8767 | if (parent->scope_set) | |
8768 | return parent->scope; | |
8769 | ||
52356b79 | 8770 | parent->fixup (cu); |
72bf9492 | 8771 | |
10b3939b | 8772 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 8773 | |
acebe513 UW |
8774 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
8775 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
8776 | Work around this problem here. */ | |
8777 | if (cu->language == language_cplus | |
6e70227d | 8778 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
8779 | && strcmp (parent->name, "::") == 0 |
8780 | && grandparent_scope == NULL) | |
8781 | { | |
8782 | parent->scope = NULL; | |
8783 | parent->scope_set = 1; | |
8784 | return NULL; | |
8785 | } | |
8786 | ||
9c6c53f7 SA |
8787 | if (pdi->tag == DW_TAG_enumerator) |
8788 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
8789 | parent->scope = grandparent_scope; | |
8790 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 8791 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
8792 | || parent->tag == DW_TAG_structure_type |
8793 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 8794 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a TT |
8795 | || parent->tag == DW_TAG_union_type |
8796 | || parent->tag == DW_TAG_enumeration_type) | |
72bf9492 DJ |
8797 | { |
8798 | if (grandparent_scope == NULL) | |
8799 | parent->scope = parent->name; | |
8800 | else | |
3e43a32a MS |
8801 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
8802 | grandparent_scope, | |
f55ee35c | 8803 | parent->name, 0, cu); |
72bf9492 | 8804 | } |
72bf9492 DJ |
8805 | else |
8806 | { | |
8807 | /* FIXME drow/2004-04-01: What should we be doing with | |
8808 | function-local names? For partial symbols, we should probably be | |
8809 | ignoring them. */ | |
b98664d3 | 8810 | complaint (_("unhandled containing DIE tag %d for DIE at %s"), |
9d8780f0 | 8811 | parent->tag, sect_offset_str (pdi->sect_off)); |
72bf9492 | 8812 | parent->scope = grandparent_scope; |
c906108c SS |
8813 | } |
8814 | ||
72bf9492 DJ |
8815 | parent->scope_set = 1; |
8816 | return parent->scope; | |
8817 | } | |
8818 | ||
8819 | /* Return the fully scoped name associated with PDI, from compilation unit | |
8820 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 8821 | |
72bf9492 DJ |
8822 | static char * |
8823 | partial_die_full_name (struct partial_die_info *pdi, | |
8824 | struct dwarf2_cu *cu) | |
8825 | { | |
15d034d0 | 8826 | const char *parent_scope; |
72bf9492 | 8827 | |
98bfdba5 PA |
8828 | /* If this is a template instantiation, we can not work out the |
8829 | template arguments from partial DIEs. So, unfortunately, we have | |
8830 | to go through the full DIEs. At least any work we do building | |
8831 | types here will be reused if full symbols are loaded later. */ | |
8832 | if (pdi->has_template_arguments) | |
8833 | { | |
52356b79 | 8834 | pdi->fixup (cu); |
98bfdba5 PA |
8835 | |
8836 | if (pdi->name != NULL && strchr (pdi->name, '<') == NULL) | |
8837 | { | |
8838 | struct die_info *die; | |
8839 | struct attribute attr; | |
8840 | struct dwarf2_cu *ref_cu = cu; | |
8841 | ||
b64f50a1 | 8842 | /* DW_FORM_ref_addr is using section offset. */ |
b4069958 | 8843 | attr.name = (enum dwarf_attribute) 0; |
98bfdba5 | 8844 | attr.form = DW_FORM_ref_addr; |
9c541725 | 8845 | attr.u.unsnd = to_underlying (pdi->sect_off); |
98bfdba5 PA |
8846 | die = follow_die_ref (NULL, &attr, &ref_cu); |
8847 | ||
8848 | return xstrdup (dwarf2_full_name (NULL, die, ref_cu)); | |
8849 | } | |
8850 | } | |
8851 | ||
72bf9492 DJ |
8852 | parent_scope = partial_die_parent_scope (pdi, cu); |
8853 | if (parent_scope == NULL) | |
8854 | return NULL; | |
8855 | else | |
f55ee35c | 8856 | return typename_concat (NULL, parent_scope, pdi->name, 0, cu); |
c906108c SS |
8857 | } |
8858 | ||
8859 | static void | |
72bf9492 | 8860 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 8861 | { |
518817b3 SM |
8862 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8863 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 8864 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 8865 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 8866 | CORE_ADDR addr = 0; |
15d034d0 | 8867 | const char *actual_name = NULL; |
e142c38c | 8868 | CORE_ADDR baseaddr; |
15d034d0 | 8869 | char *built_actual_name; |
e142c38c DJ |
8870 | |
8871 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 8872 | |
15d034d0 TT |
8873 | built_actual_name = partial_die_full_name (pdi, cu); |
8874 | if (built_actual_name != NULL) | |
8875 | actual_name = built_actual_name; | |
63d06c5c | 8876 | |
72bf9492 DJ |
8877 | if (actual_name == NULL) |
8878 | actual_name = pdi->name; | |
8879 | ||
c906108c SS |
8880 | switch (pdi->tag) |
8881 | { | |
b1dc1806 | 8882 | case DW_TAG_inlined_subroutine: |
c906108c | 8883 | case DW_TAG_subprogram: |
79748972 TT |
8884 | addr = (gdbarch_adjust_dwarf2_addr (gdbarch, pdi->lowpc + baseaddr) |
8885 | - baseaddr); | |
2cfa0c8d | 8886 | if (pdi->is_external || cu->language == language_ada) |
c906108c | 8887 | { |
2cfa0c8d JB |
8888 | /* brobecker/2007-12-26: Normally, only "external" DIEs are part |
8889 | of the global scope. But in Ada, we want to be able to access | |
8890 | nested procedures globally. So all Ada subprograms are stored | |
8891 | in the global scope. */ | |
f47fb265 | 8892 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 8893 | built_actual_name != NULL, |
f47fb265 | 8894 | VAR_DOMAIN, LOC_BLOCK, |
79748972 | 8895 | SECT_OFF_TEXT (objfile), |
f47fb265 | 8896 | &objfile->global_psymbols, |
79748972 TT |
8897 | addr, |
8898 | cu->language, objfile); | |
c906108c SS |
8899 | } |
8900 | else | |
8901 | { | |
f47fb265 | 8902 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 8903 | built_actual_name != NULL, |
f47fb265 | 8904 | VAR_DOMAIN, LOC_BLOCK, |
79748972 | 8905 | SECT_OFF_TEXT (objfile), |
f47fb265 | 8906 | &objfile->static_psymbols, |
1762568f | 8907 | addr, cu->language, objfile); |
c906108c | 8908 | } |
0c1b455e TT |
8909 | |
8910 | if (pdi->main_subprogram && actual_name != NULL) | |
8911 | set_objfile_main_name (objfile, actual_name, cu->language); | |
c906108c | 8912 | break; |
72929c62 JB |
8913 | case DW_TAG_constant: |
8914 | { | |
af5bf4ad | 8915 | std::vector<partial_symbol *> *list; |
72929c62 JB |
8916 | |
8917 | if (pdi->is_external) | |
8918 | list = &objfile->global_psymbols; | |
8919 | else | |
8920 | list = &objfile->static_psymbols; | |
f47fb265 | 8921 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 8922 | built_actual_name != NULL, VAR_DOMAIN, LOC_STATIC, |
79748972 | 8923 | -1, list, 0, cu->language, objfile); |
72929c62 JB |
8924 | } |
8925 | break; | |
c906108c | 8926 | case DW_TAG_variable: |
95554aad TT |
8927 | if (pdi->d.locdesc) |
8928 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 8929 | |
95554aad | 8930 | if (pdi->d.locdesc |
caac4577 JG |
8931 | && addr == 0 |
8932 | && !dwarf2_per_objfile->has_section_at_zero) | |
8933 | { | |
8934 | /* A global or static variable may also have been stripped | |
8935 | out by the linker if unused, in which case its address | |
8936 | will be nullified; do not add such variables into partial | |
8937 | symbol table then. */ | |
8938 | } | |
8939 | else if (pdi->is_external) | |
c906108c SS |
8940 | { |
8941 | /* Global Variable. | |
8942 | Don't enter into the minimal symbol tables as there is | |
8943 | a minimal symbol table entry from the ELF symbols already. | |
8944 | Enter into partial symbol table if it has a location | |
8945 | descriptor or a type. | |
8946 | If the location descriptor is missing, new_symbol will create | |
8947 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
8948 | be determined from the minimal symbol table whenever the variable | |
8949 | is referenced. | |
8950 | The address for the partial symbol table entry is not | |
8951 | used by GDB, but it comes in handy for debugging partial symbol | |
8952 | table building. */ | |
8953 | ||
95554aad | 8954 | if (pdi->d.locdesc || pdi->has_type) |
f47fb265 | 8955 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 8956 | built_actual_name != NULL, |
f47fb265 | 8957 | VAR_DOMAIN, LOC_STATIC, |
79748972 | 8958 | SECT_OFF_TEXT (objfile), |
f47fb265 | 8959 | &objfile->global_psymbols, |
79748972 | 8960 | addr, cu->language, objfile); |
c906108c SS |
8961 | } |
8962 | else | |
8963 | { | |
ff908ebf AW |
8964 | int has_loc = pdi->d.locdesc != NULL; |
8965 | ||
8966 | /* Static Variable. Skip symbols whose value we cannot know (those | |
8967 | without location descriptors or constant values). */ | |
8968 | if (!has_loc && !pdi->has_const_value) | |
decbce07 | 8969 | { |
15d034d0 | 8970 | xfree (built_actual_name); |
decbce07 MS |
8971 | return; |
8972 | } | |
ff908ebf | 8973 | |
f47fb265 | 8974 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 8975 | built_actual_name != NULL, |
f47fb265 | 8976 | VAR_DOMAIN, LOC_STATIC, |
79748972 | 8977 | SECT_OFF_TEXT (objfile), |
f47fb265 | 8978 | &objfile->static_psymbols, |
79748972 | 8979 | has_loc ? addr : 0, |
f47fb265 | 8980 | cu->language, objfile); |
c906108c SS |
8981 | } |
8982 | break; | |
8983 | case DW_TAG_typedef: | |
8984 | case DW_TAG_base_type: | |
a02abb62 | 8985 | case DW_TAG_subrange_type: |
38d518c9 | 8986 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 8987 | built_actual_name != NULL, |
79748972 | 8988 | VAR_DOMAIN, LOC_TYPEDEF, -1, |
c906108c | 8989 | &objfile->static_psymbols, |
1762568f | 8990 | 0, cu->language, objfile); |
c906108c | 8991 | break; |
74921315 | 8992 | case DW_TAG_imported_declaration: |
72bf9492 DJ |
8993 | case DW_TAG_namespace: |
8994 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
15d034d0 | 8995 | built_actual_name != NULL, |
79748972 | 8996 | VAR_DOMAIN, LOC_TYPEDEF, -1, |
72bf9492 | 8997 | &objfile->global_psymbols, |
1762568f | 8998 | 0, cu->language, objfile); |
72bf9492 | 8999 | break; |
530e8392 KB |
9000 | case DW_TAG_module: |
9001 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
9002 | built_actual_name != NULL, | |
79748972 | 9003 | MODULE_DOMAIN, LOC_TYPEDEF, -1, |
530e8392 | 9004 | &objfile->global_psymbols, |
1762568f | 9005 | 0, cu->language, objfile); |
530e8392 | 9006 | break; |
c906108c | 9007 | case DW_TAG_class_type: |
680b30c7 | 9008 | case DW_TAG_interface_type: |
c906108c SS |
9009 | case DW_TAG_structure_type: |
9010 | case DW_TAG_union_type: | |
9011 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
9012 | /* Skip external references. The DWARF standard says in the section |
9013 | about "Structure, Union, and Class Type Entries": "An incomplete | |
9014 | structure, union or class type is represented by a structure, | |
9015 | union or class entry that does not have a byte size attribute | |
9016 | and that has a DW_AT_declaration attribute." */ | |
9017 | if (!pdi->has_byte_size && pdi->is_declaration) | |
decbce07 | 9018 | { |
15d034d0 | 9019 | xfree (built_actual_name); |
decbce07 MS |
9020 | return; |
9021 | } | |
fa4028e9 | 9022 | |
63d06c5c DC |
9023 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
9024 | static vs. global. */ | |
38d518c9 | 9025 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 9026 | built_actual_name != NULL, |
79748972 | 9027 | STRUCT_DOMAIN, LOC_TYPEDEF, -1, |
9c37b5ae | 9028 | cu->language == language_cplus |
63d06c5c DC |
9029 | ? &objfile->global_psymbols |
9030 | : &objfile->static_psymbols, | |
1762568f | 9031 | 0, cu->language, objfile); |
c906108c | 9032 | |
c906108c SS |
9033 | break; |
9034 | case DW_TAG_enumerator: | |
38d518c9 | 9035 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 9036 | built_actual_name != NULL, |
79748972 | 9037 | VAR_DOMAIN, LOC_CONST, -1, |
9c37b5ae | 9038 | cu->language == language_cplus |
f6fe98ef DJ |
9039 | ? &objfile->global_psymbols |
9040 | : &objfile->static_psymbols, | |
1762568f | 9041 | 0, cu->language, objfile); |
c906108c SS |
9042 | break; |
9043 | default: | |
9044 | break; | |
9045 | } | |
5c4e30ca | 9046 | |
15d034d0 | 9047 | xfree (built_actual_name); |
c906108c SS |
9048 | } |
9049 | ||
5c4e30ca DC |
9050 | /* Read a partial die corresponding to a namespace; also, add a symbol |
9051 | corresponding to that namespace to the symbol table. NAMESPACE is | |
9052 | the name of the enclosing namespace. */ | |
91c24f0a | 9053 | |
72bf9492 DJ |
9054 | static void |
9055 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 9056 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
cdc07690 | 9057 | int set_addrmap, struct dwarf2_cu *cu) |
91c24f0a | 9058 | { |
72bf9492 | 9059 | /* Add a symbol for the namespace. */ |
e7c27a73 | 9060 | |
72bf9492 | 9061 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
9062 | |
9063 | /* Now scan partial symbols in that namespace. */ | |
9064 | ||
91c24f0a | 9065 | if (pdi->has_children) |
cdc07690 | 9066 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
91c24f0a DC |
9067 | } |
9068 | ||
5d7cb8df JK |
9069 | /* Read a partial die corresponding to a Fortran module. */ |
9070 | ||
9071 | static void | |
9072 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
cdc07690 | 9073 | CORE_ADDR *highpc, int set_addrmap, struct dwarf2_cu *cu) |
5d7cb8df | 9074 | { |
530e8392 KB |
9075 | /* Add a symbol for the namespace. */ |
9076 | ||
9077 | add_partial_symbol (pdi, cu); | |
9078 | ||
f55ee35c | 9079 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
9080 | |
9081 | if (pdi->has_children) | |
cdc07690 | 9082 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
5d7cb8df JK |
9083 | } |
9084 | ||
b1dc1806 XR |
9085 | /* Read a partial die corresponding to a subprogram or an inlined |
9086 | subprogram and create a partial symbol for that subprogram. | |
9087 | When the CU language allows it, this routine also defines a partial | |
9088 | symbol for each nested subprogram that this subprogram contains. | |
9089 | If SET_ADDRMAP is true, record the covered ranges in the addrmap. | |
9090 | Set *LOWPC and *HIGHPC to the lowest and highest PC values found in PDI. | |
6e70227d | 9091 | |
cdc07690 YQ |
9092 | PDI may also be a lexical block, in which case we simply search |
9093 | recursively for subprograms defined inside that lexical block. | |
bc30ff58 JB |
9094 | Again, this is only performed when the CU language allows this |
9095 | type of definitions. */ | |
9096 | ||
9097 | static void | |
9098 | add_partial_subprogram (struct partial_die_info *pdi, | |
9099 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 9100 | int set_addrmap, struct dwarf2_cu *cu) |
bc30ff58 | 9101 | { |
b1dc1806 | 9102 | if (pdi->tag == DW_TAG_subprogram || pdi->tag == DW_TAG_inlined_subroutine) |
bc30ff58 JB |
9103 | { |
9104 | if (pdi->has_pc_info) | |
9105 | { | |
9106 | if (pdi->lowpc < *lowpc) | |
9107 | *lowpc = pdi->lowpc; | |
9108 | if (pdi->highpc > *highpc) | |
9109 | *highpc = pdi->highpc; | |
cdc07690 | 9110 | if (set_addrmap) |
5734ee8b | 9111 | { |
518817b3 | 9112 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a MR |
9113 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9114 | CORE_ADDR baseaddr; | |
9115 | CORE_ADDR highpc; | |
9116 | CORE_ADDR lowpc; | |
5734ee8b DJ |
9117 | |
9118 | baseaddr = ANOFFSET (objfile->section_offsets, | |
9119 | SECT_OFF_TEXT (objfile)); | |
79748972 TT |
9120 | lowpc = (gdbarch_adjust_dwarf2_addr (gdbarch, |
9121 | pdi->lowpc + baseaddr) | |
9122 | - baseaddr); | |
9123 | highpc = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
9124 | pdi->highpc + baseaddr) | |
9125 | - baseaddr); | |
3e29f34a | 9126 | addrmap_set_empty (objfile->psymtabs_addrmap, lowpc, highpc - 1, |
9291a0cd | 9127 | cu->per_cu->v.psymtab); |
5734ee8b | 9128 | } |
481860b3 GB |
9129 | } |
9130 | ||
9131 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
9132 | { | |
bc30ff58 | 9133 | if (!pdi->is_declaration) |
e8d05480 JB |
9134 | /* Ignore subprogram DIEs that do not have a name, they are |
9135 | illegal. Do not emit a complaint at this point, we will | |
9136 | do so when we convert this psymtab into a symtab. */ | |
9137 | if (pdi->name) | |
9138 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
9139 | } |
9140 | } | |
6e70227d | 9141 | |
bc30ff58 JB |
9142 | if (! pdi->has_children) |
9143 | return; | |
9144 | ||
9145 | if (cu->language == language_ada) | |
9146 | { | |
9147 | pdi = pdi->die_child; | |
9148 | while (pdi != NULL) | |
9149 | { | |
52356b79 | 9150 | pdi->fixup (cu); |
bc30ff58 | 9151 | if (pdi->tag == DW_TAG_subprogram |
b1dc1806 | 9152 | || pdi->tag == DW_TAG_inlined_subroutine |
bc30ff58 | 9153 | || pdi->tag == DW_TAG_lexical_block) |
cdc07690 | 9154 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
bc30ff58 JB |
9155 | pdi = pdi->die_sibling; |
9156 | } | |
9157 | } | |
9158 | } | |
9159 | ||
91c24f0a DC |
9160 | /* Read a partial die corresponding to an enumeration type. */ |
9161 | ||
72bf9492 DJ |
9162 | static void |
9163 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
9164 | struct dwarf2_cu *cu) | |
91c24f0a | 9165 | { |
72bf9492 | 9166 | struct partial_die_info *pdi; |
91c24f0a DC |
9167 | |
9168 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
9169 | add_partial_symbol (enum_pdi, cu); |
9170 | ||
9171 | pdi = enum_pdi->die_child; | |
9172 | while (pdi) | |
91c24f0a | 9173 | { |
72bf9492 | 9174 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
b98664d3 | 9175 | complaint (_("malformed enumerator DIE ignored")); |
91c24f0a | 9176 | else |
72bf9492 DJ |
9177 | add_partial_symbol (pdi, cu); |
9178 | pdi = pdi->die_sibling; | |
91c24f0a | 9179 | } |
91c24f0a DC |
9180 | } |
9181 | ||
6caca83c CC |
9182 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
9183 | ||
9184 | static unsigned int | |
d521ce57 | 9185 | peek_abbrev_code (bfd *abfd, const gdb_byte *info_ptr) |
6caca83c CC |
9186 | { |
9187 | unsigned int bytes_read; | |
9188 | ||
9189 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9190 | } | |
9191 | ||
685af9cd TT |
9192 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit |
9193 | READER::CU. Use READER::ABBREV_TABLE to lookup any abbreviation. | |
9194 | ||
4bb7a0a7 DJ |
9195 | Return the corresponding abbrev, or NULL if the number is zero (indicating |
9196 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
9197 | the initial number. */ | |
9198 | ||
9199 | static struct abbrev_info * | |
685af9cd TT |
9200 | peek_die_abbrev (const die_reader_specs &reader, |
9201 | const gdb_byte *info_ptr, unsigned int *bytes_read) | |
4bb7a0a7 | 9202 | { |
685af9cd | 9203 | dwarf2_cu *cu = reader.cu; |
518817b3 | 9204 | bfd *abfd = cu->per_cu->dwarf2_per_objfile->objfile->obfd; |
685af9cd TT |
9205 | unsigned int abbrev_number |
9206 | = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
4bb7a0a7 DJ |
9207 | |
9208 | if (abbrev_number == 0) | |
9209 | return NULL; | |
9210 | ||
685af9cd | 9211 | abbrev_info *abbrev = reader.abbrev_table->lookup_abbrev (abbrev_number); |
4bb7a0a7 DJ |
9212 | if (!abbrev) |
9213 | { | |
422b9917 | 9214 | error (_("Dwarf Error: Could not find abbrev number %d in %s" |
9d8780f0 | 9215 | " at offset %s [in module %s]"), |
422b9917 | 9216 | abbrev_number, cu->per_cu->is_debug_types ? "TU" : "CU", |
9d8780f0 | 9217 | sect_offset_str (cu->header.sect_off), bfd_get_filename (abfd)); |
4bb7a0a7 DJ |
9218 | } |
9219 | ||
9220 | return abbrev; | |
9221 | } | |
9222 | ||
93311388 DE |
9223 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
9224 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
9225 | DIE. Any children of the skipped DIEs will also be skipped. */ |
9226 | ||
d521ce57 TT |
9227 | static const gdb_byte * |
9228 | skip_children (const struct die_reader_specs *reader, const gdb_byte *info_ptr) | |
4bb7a0a7 | 9229 | { |
4bb7a0a7 DJ |
9230 | while (1) |
9231 | { | |
685af9cd TT |
9232 | unsigned int bytes_read; |
9233 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); | |
9234 | ||
4bb7a0a7 DJ |
9235 | if (abbrev == NULL) |
9236 | return info_ptr + bytes_read; | |
9237 | else | |
dee91e82 | 9238 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
9239 | } |
9240 | } | |
9241 | ||
93311388 DE |
9242 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
9243 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
9244 | abbrev corresponding to that skipped uleb128 should be passed in |
9245 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
9246 | children. */ | |
9247 | ||
d521ce57 TT |
9248 | static const gdb_byte * |
9249 | skip_one_die (const struct die_reader_specs *reader, const gdb_byte *info_ptr, | |
dee91e82 | 9250 | struct abbrev_info *abbrev) |
4bb7a0a7 DJ |
9251 | { |
9252 | unsigned int bytes_read; | |
9253 | struct attribute attr; | |
dee91e82 DE |
9254 | bfd *abfd = reader->abfd; |
9255 | struct dwarf2_cu *cu = reader->cu; | |
d521ce57 | 9256 | const gdb_byte *buffer = reader->buffer; |
f664829e | 9257 | const gdb_byte *buffer_end = reader->buffer_end; |
4bb7a0a7 DJ |
9258 | unsigned int form, i; |
9259 | ||
9260 | for (i = 0; i < abbrev->num_attrs; i++) | |
9261 | { | |
9262 | /* The only abbrev we care about is DW_AT_sibling. */ | |
9263 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
9264 | { | |
dee91e82 | 9265 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
4bb7a0a7 | 9266 | if (attr.form == DW_FORM_ref_addr) |
b98664d3 | 9267 | complaint (_("ignoring absolute DW_AT_sibling")); |
4bb7a0a7 | 9268 | else |
b9502d3f | 9269 | { |
9c541725 PA |
9270 | sect_offset off = dwarf2_get_ref_die_offset (&attr); |
9271 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); | |
b9502d3f WN |
9272 | |
9273 | if (sibling_ptr < info_ptr) | |
b98664d3 | 9274 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 KS |
9275 | else if (sibling_ptr > reader->buffer_end) |
9276 | dwarf2_section_buffer_overflow_complaint (reader->die_section); | |
b9502d3f WN |
9277 | else |
9278 | return sibling_ptr; | |
9279 | } | |
4bb7a0a7 DJ |
9280 | } |
9281 | ||
9282 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
9283 | form = abbrev->attrs[i].form; | |
9284 | skip_attribute: | |
9285 | switch (form) | |
9286 | { | |
4bb7a0a7 | 9287 | case DW_FORM_ref_addr: |
ae411497 TT |
9288 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
9289 | and later it is offset sized. */ | |
9290 | if (cu->header.version == 2) | |
9291 | info_ptr += cu->header.addr_size; | |
9292 | else | |
9293 | info_ptr += cu->header.offset_size; | |
9294 | break; | |
36586728 TT |
9295 | case DW_FORM_GNU_ref_alt: |
9296 | info_ptr += cu->header.offset_size; | |
9297 | break; | |
ae411497 | 9298 | case DW_FORM_addr: |
4bb7a0a7 DJ |
9299 | info_ptr += cu->header.addr_size; |
9300 | break; | |
9301 | case DW_FORM_data1: | |
9302 | case DW_FORM_ref1: | |
9303 | case DW_FORM_flag: | |
9304 | info_ptr += 1; | |
9305 | break; | |
2dc7f7b3 | 9306 | case DW_FORM_flag_present: |
43988095 | 9307 | case DW_FORM_implicit_const: |
2dc7f7b3 | 9308 | break; |
4bb7a0a7 DJ |
9309 | case DW_FORM_data2: |
9310 | case DW_FORM_ref2: | |
9311 | info_ptr += 2; | |
9312 | break; | |
9313 | case DW_FORM_data4: | |
9314 | case DW_FORM_ref4: | |
9315 | info_ptr += 4; | |
9316 | break; | |
9317 | case DW_FORM_data8: | |
9318 | case DW_FORM_ref8: | |
55f1336d | 9319 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
9320 | info_ptr += 8; |
9321 | break; | |
0224619f JK |
9322 | case DW_FORM_data16: |
9323 | info_ptr += 16; | |
9324 | break; | |
4bb7a0a7 | 9325 | case DW_FORM_string: |
9b1c24c8 | 9326 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
9327 | info_ptr += bytes_read; |
9328 | break; | |
2dc7f7b3 | 9329 | case DW_FORM_sec_offset: |
4bb7a0a7 | 9330 | case DW_FORM_strp: |
36586728 | 9331 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
9332 | info_ptr += cu->header.offset_size; |
9333 | break; | |
2dc7f7b3 | 9334 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
9335 | case DW_FORM_block: |
9336 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9337 | info_ptr += bytes_read; | |
9338 | break; | |
9339 | case DW_FORM_block1: | |
9340 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
9341 | break; | |
9342 | case DW_FORM_block2: | |
9343 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
9344 | break; | |
9345 | case DW_FORM_block4: | |
9346 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
9347 | break; | |
9348 | case DW_FORM_sdata: | |
9349 | case DW_FORM_udata: | |
9350 | case DW_FORM_ref_udata: | |
3019eac3 DE |
9351 | case DW_FORM_GNU_addr_index: |
9352 | case DW_FORM_GNU_str_index: | |
d521ce57 | 9353 | info_ptr = safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
9354 | break; |
9355 | case DW_FORM_indirect: | |
9356 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9357 | info_ptr += bytes_read; | |
9358 | /* We need to continue parsing from here, so just go back to | |
9359 | the top. */ | |
9360 | goto skip_attribute; | |
9361 | ||
9362 | default: | |
3e43a32a MS |
9363 | error (_("Dwarf Error: Cannot handle %s " |
9364 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
9365 | dwarf_form_name (form), |
9366 | bfd_get_filename (abfd)); | |
9367 | } | |
9368 | } | |
9369 | ||
9370 | if (abbrev->has_children) | |
dee91e82 | 9371 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
9372 | else |
9373 | return info_ptr; | |
9374 | } | |
9375 | ||
93311388 | 9376 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 9377 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 9378 | |
d521ce57 | 9379 | static const gdb_byte * |
dee91e82 DE |
9380 | locate_pdi_sibling (const struct die_reader_specs *reader, |
9381 | struct partial_die_info *orig_pdi, | |
d521ce57 | 9382 | const gdb_byte *info_ptr) |
91c24f0a DC |
9383 | { |
9384 | /* Do we know the sibling already? */ | |
72bf9492 | 9385 | |
91c24f0a DC |
9386 | if (orig_pdi->sibling) |
9387 | return orig_pdi->sibling; | |
9388 | ||
9389 | /* Are there any children to deal with? */ | |
9390 | ||
9391 | if (!orig_pdi->has_children) | |
9392 | return info_ptr; | |
9393 | ||
4bb7a0a7 | 9394 | /* Skip the children the long way. */ |
91c24f0a | 9395 | |
dee91e82 | 9396 | return skip_children (reader, info_ptr); |
91c24f0a DC |
9397 | } |
9398 | ||
257e7a09 | 9399 | /* Expand this partial symbol table into a full symbol table. SELF is |
442e4d9c | 9400 | not NULL. */ |
c906108c SS |
9401 | |
9402 | static void | |
257e7a09 YQ |
9403 | dwarf2_read_symtab (struct partial_symtab *self, |
9404 | struct objfile *objfile) | |
c906108c | 9405 | { |
ed2dc618 SM |
9406 | struct dwarf2_per_objfile *dwarf2_per_objfile |
9407 | = get_dwarf2_per_objfile (objfile); | |
9408 | ||
257e7a09 | 9409 | if (self->readin) |
c906108c | 9410 | { |
442e4d9c | 9411 | warning (_("bug: psymtab for %s is already read in."), |
257e7a09 | 9412 | self->filename); |
442e4d9c YQ |
9413 | } |
9414 | else | |
9415 | { | |
9416 | if (info_verbose) | |
c906108c | 9417 | { |
442e4d9c | 9418 | printf_filtered (_("Reading in symbols for %s..."), |
257e7a09 | 9419 | self->filename); |
442e4d9c | 9420 | gdb_flush (gdb_stdout); |
c906108c | 9421 | } |
c906108c | 9422 | |
442e4d9c YQ |
9423 | /* If this psymtab is constructed from a debug-only objfile, the |
9424 | has_section_at_zero flag will not necessarily be correct. We | |
9425 | can get the correct value for this flag by looking at the data | |
9426 | associated with the (presumably stripped) associated objfile. */ | |
9427 | if (objfile->separate_debug_objfile_backlink) | |
9428 | { | |
9429 | struct dwarf2_per_objfile *dpo_backlink | |
ed2dc618 | 9430 | = get_dwarf2_per_objfile (objfile->separate_debug_objfile_backlink); |
9a619af0 | 9431 | |
442e4d9c YQ |
9432 | dwarf2_per_objfile->has_section_at_zero |
9433 | = dpo_backlink->has_section_at_zero; | |
9434 | } | |
b2ab525c | 9435 | |
442e4d9c | 9436 | dwarf2_per_objfile->reading_partial_symbols = 0; |
98bfdba5 | 9437 | |
257e7a09 | 9438 | psymtab_to_symtab_1 (self); |
c906108c | 9439 | |
442e4d9c YQ |
9440 | /* Finish up the debug error message. */ |
9441 | if (info_verbose) | |
9442 | printf_filtered (_("done.\n")); | |
c906108c | 9443 | } |
95554aad | 9444 | |
ed2dc618 | 9445 | process_cu_includes (dwarf2_per_objfile); |
c906108c | 9446 | } |
9cdd5dbd DE |
9447 | \f |
9448 | /* Reading in full CUs. */ | |
c906108c | 9449 | |
10b3939b DJ |
9450 | /* Add PER_CU to the queue. */ |
9451 | ||
9452 | static void | |
95554aad TT |
9453 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
9454 | enum language pretend_language) | |
10b3939b DJ |
9455 | { |
9456 | struct dwarf2_queue_item *item; | |
9457 | ||
9458 | per_cu->queued = 1; | |
8d749320 | 9459 | item = XNEW (struct dwarf2_queue_item); |
10b3939b | 9460 | item->per_cu = per_cu; |
95554aad | 9461 | item->pretend_language = pretend_language; |
10b3939b DJ |
9462 | item->next = NULL; |
9463 | ||
9464 | if (dwarf2_queue == NULL) | |
9465 | dwarf2_queue = item; | |
9466 | else | |
9467 | dwarf2_queue_tail->next = item; | |
9468 | ||
9469 | dwarf2_queue_tail = item; | |
9470 | } | |
9471 | ||
89e63ee4 DE |
9472 | /* If PER_CU is not yet queued, add it to the queue. |
9473 | If DEPENDENT_CU is non-NULL, it has a reference to PER_CU so add a | |
9474 | dependency. | |
0907af0c | 9475 | The result is non-zero if PER_CU was queued, otherwise the result is zero |
69d751e3 DE |
9476 | meaning either PER_CU is already queued or it is already loaded. |
9477 | ||
9478 | N.B. There is an invariant here that if a CU is queued then it is loaded. | |
9479 | The caller is required to load PER_CU if we return non-zero. */ | |
0907af0c DE |
9480 | |
9481 | static int | |
89e63ee4 | 9482 | maybe_queue_comp_unit (struct dwarf2_cu *dependent_cu, |
0907af0c DE |
9483 | struct dwarf2_per_cu_data *per_cu, |
9484 | enum language pretend_language) | |
9485 | { | |
9486 | /* We may arrive here during partial symbol reading, if we need full | |
9487 | DIEs to process an unusual case (e.g. template arguments). Do | |
9488 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
ed2dc618 | 9489 | if (per_cu->dwarf2_per_objfile->reading_partial_symbols) |
0907af0c DE |
9490 | { |
9491 | if (per_cu->cu == NULL || per_cu->cu->dies == NULL) | |
9492 | return 1; | |
9493 | return 0; | |
9494 | } | |
9495 | ||
9496 | /* Mark the dependence relation so that we don't flush PER_CU | |
9497 | too early. */ | |
89e63ee4 DE |
9498 | if (dependent_cu != NULL) |
9499 | dwarf2_add_dependence (dependent_cu, per_cu); | |
0907af0c DE |
9500 | |
9501 | /* If it's already on the queue, we have nothing to do. */ | |
9502 | if (per_cu->queued) | |
9503 | return 0; | |
9504 | ||
9505 | /* If the compilation unit is already loaded, just mark it as | |
9506 | used. */ | |
9507 | if (per_cu->cu != NULL) | |
9508 | { | |
9509 | per_cu->cu->last_used = 0; | |
9510 | return 0; | |
9511 | } | |
9512 | ||
9513 | /* Add it to the queue. */ | |
9514 | queue_comp_unit (per_cu, pretend_language); | |
9515 | ||
9516 | return 1; | |
9517 | } | |
9518 | ||
10b3939b DJ |
9519 | /* Process the queue. */ |
9520 | ||
9521 | static void | |
ed2dc618 | 9522 | process_queue (struct dwarf2_per_objfile *dwarf2_per_objfile) |
10b3939b DJ |
9523 | { |
9524 | struct dwarf2_queue_item *item, *next_item; | |
9525 | ||
b4f54984 | 9526 | if (dwarf_read_debug) |
45cfd468 DE |
9527 | { |
9528 | fprintf_unfiltered (gdb_stdlog, | |
9529 | "Expanding one or more symtabs of objfile %s ...\n", | |
4262abfb | 9530 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 DE |
9531 | } |
9532 | ||
03dd20cc DJ |
9533 | /* The queue starts out with one item, but following a DIE reference |
9534 | may load a new CU, adding it to the end of the queue. */ | |
10b3939b DJ |
9535 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) |
9536 | { | |
cc12ce38 DE |
9537 | if ((dwarf2_per_objfile->using_index |
9538 | ? !item->per_cu->v.quick->compunit_symtab | |
9539 | : (item->per_cu->v.psymtab && !item->per_cu->v.psymtab->readin)) | |
9540 | /* Skip dummy CUs. */ | |
9541 | && item->per_cu->cu != NULL) | |
f4dc4d17 DE |
9542 | { |
9543 | struct dwarf2_per_cu_data *per_cu = item->per_cu; | |
73be47f5 | 9544 | unsigned int debug_print_threshold; |
247f5c4f | 9545 | char buf[100]; |
f4dc4d17 | 9546 | |
247f5c4f | 9547 | if (per_cu->is_debug_types) |
f4dc4d17 | 9548 | { |
247f5c4f DE |
9549 | struct signatured_type *sig_type = |
9550 | (struct signatured_type *) per_cu; | |
9551 | ||
9d8780f0 | 9552 | sprintf (buf, "TU %s at offset %s", |
73be47f5 | 9553 | hex_string (sig_type->signature), |
9d8780f0 | 9554 | sect_offset_str (per_cu->sect_off)); |
73be47f5 DE |
9555 | /* There can be 100s of TUs. |
9556 | Only print them in verbose mode. */ | |
9557 | debug_print_threshold = 2; | |
f4dc4d17 | 9558 | } |
247f5c4f | 9559 | else |
73be47f5 | 9560 | { |
9d8780f0 SM |
9561 | sprintf (buf, "CU at offset %s", |
9562 | sect_offset_str (per_cu->sect_off)); | |
73be47f5 DE |
9563 | debug_print_threshold = 1; |
9564 | } | |
247f5c4f | 9565 | |
b4f54984 | 9566 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 9567 | fprintf_unfiltered (gdb_stdlog, "Expanding symtab of %s\n", buf); |
f4dc4d17 DE |
9568 | |
9569 | if (per_cu->is_debug_types) | |
9570 | process_full_type_unit (per_cu, item->pretend_language); | |
9571 | else | |
9572 | process_full_comp_unit (per_cu, item->pretend_language); | |
9573 | ||
b4f54984 | 9574 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 9575 | fprintf_unfiltered (gdb_stdlog, "Done expanding %s\n", buf); |
f4dc4d17 | 9576 | } |
10b3939b DJ |
9577 | |
9578 | item->per_cu->queued = 0; | |
9579 | next_item = item->next; | |
9580 | xfree (item); | |
9581 | } | |
9582 | ||
9583 | dwarf2_queue_tail = NULL; | |
45cfd468 | 9584 | |
b4f54984 | 9585 | if (dwarf_read_debug) |
45cfd468 DE |
9586 | { |
9587 | fprintf_unfiltered (gdb_stdlog, "Done expanding symtabs of %s.\n", | |
4262abfb | 9588 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 | 9589 | } |
10b3939b DJ |
9590 | } |
9591 | ||
10b3939b DJ |
9592 | /* Read in full symbols for PST, and anything it depends on. */ |
9593 | ||
c906108c | 9594 | static void |
fba45db2 | 9595 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c | 9596 | { |
10b3939b | 9597 | struct dwarf2_per_cu_data *per_cu; |
aaa75496 JB |
9598 | int i; |
9599 | ||
95554aad TT |
9600 | if (pst->readin) |
9601 | return; | |
9602 | ||
aaa75496 | 9603 | for (i = 0; i < pst->number_of_dependencies; i++) |
95554aad TT |
9604 | if (!pst->dependencies[i]->readin |
9605 | && pst->dependencies[i]->user == NULL) | |
aaa75496 JB |
9606 | { |
9607 | /* Inform about additional files that need to be read in. */ | |
9608 | if (info_verbose) | |
9609 | { | |
a3f17187 | 9610 | /* FIXME: i18n: Need to make this a single string. */ |
aaa75496 JB |
9611 | fputs_filtered (" ", gdb_stdout); |
9612 | wrap_here (""); | |
9613 | fputs_filtered ("and ", gdb_stdout); | |
9614 | wrap_here (""); | |
9615 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
0963b4bd | 9616 | wrap_here (""); /* Flush output. */ |
aaa75496 JB |
9617 | gdb_flush (gdb_stdout); |
9618 | } | |
9619 | psymtab_to_symtab_1 (pst->dependencies[i]); | |
9620 | } | |
9621 | ||
9a3c8263 | 9622 | per_cu = (struct dwarf2_per_cu_data *) pst->read_symtab_private; |
10b3939b DJ |
9623 | |
9624 | if (per_cu == NULL) | |
aaa75496 JB |
9625 | { |
9626 | /* It's an include file, no symbols to read for it. | |
9627 | Everything is in the parent symtab. */ | |
9628 | pst->readin = 1; | |
9629 | return; | |
9630 | } | |
c906108c | 9631 | |
58f0c718 | 9632 | dw2_do_instantiate_symtab (per_cu, false); |
10b3939b DJ |
9633 | } |
9634 | ||
dee91e82 DE |
9635 | /* Trivial hash function for die_info: the hash value of a DIE |
9636 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 9637 | |
dee91e82 DE |
9638 | static hashval_t |
9639 | die_hash (const void *item) | |
10b3939b | 9640 | { |
9a3c8263 | 9641 | const struct die_info *die = (const struct die_info *) item; |
6502dd73 | 9642 | |
9c541725 | 9643 | return to_underlying (die->sect_off); |
dee91e82 | 9644 | } |
63d06c5c | 9645 | |
dee91e82 DE |
9646 | /* Trivial comparison function for die_info structures: two DIEs |
9647 | are equal if they have the same offset. */ | |
98bfdba5 | 9648 | |
dee91e82 DE |
9649 | static int |
9650 | die_eq (const void *item_lhs, const void *item_rhs) | |
9651 | { | |
9a3c8263 SM |
9652 | const struct die_info *die_lhs = (const struct die_info *) item_lhs; |
9653 | const struct die_info *die_rhs = (const struct die_info *) item_rhs; | |
c906108c | 9654 | |
9c541725 | 9655 | return die_lhs->sect_off == die_rhs->sect_off; |
dee91e82 | 9656 | } |
c906108c | 9657 | |
dee91e82 DE |
9658 | /* die_reader_func for load_full_comp_unit. |
9659 | This is identical to read_signatured_type_reader, | |
9660 | but is kept separate for now. */ | |
c906108c | 9661 | |
dee91e82 DE |
9662 | static void |
9663 | load_full_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 9664 | const gdb_byte *info_ptr, |
dee91e82 DE |
9665 | struct die_info *comp_unit_die, |
9666 | int has_children, | |
9667 | void *data) | |
9668 | { | |
9669 | struct dwarf2_cu *cu = reader->cu; | |
9a3c8263 | 9670 | enum language *language_ptr = (enum language *) data; |
6caca83c | 9671 | |
dee91e82 DE |
9672 | gdb_assert (cu->die_hash == NULL); |
9673 | cu->die_hash = | |
9674 | htab_create_alloc_ex (cu->header.length / 12, | |
9675 | die_hash, | |
9676 | die_eq, | |
9677 | NULL, | |
9678 | &cu->comp_unit_obstack, | |
9679 | hashtab_obstack_allocate, | |
9680 | dummy_obstack_deallocate); | |
e142c38c | 9681 | |
dee91e82 DE |
9682 | if (has_children) |
9683 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
9684 | &info_ptr, comp_unit_die); | |
9685 | cu->dies = comp_unit_die; | |
9686 | /* comp_unit_die is not stored in die_hash, no need. */ | |
10b3939b DJ |
9687 | |
9688 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 9689 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 9690 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
9691 | or we won't be able to build types correctly. |
9692 | Similarly, if we do not read the producer, we can not apply | |
9693 | producer-specific interpretation. */ | |
95554aad | 9694 | prepare_one_comp_unit (cu, cu->dies, *language_ptr); |
dee91e82 | 9695 | } |
10b3939b | 9696 | |
dee91e82 | 9697 | /* Load the DIEs associated with PER_CU into memory. */ |
a6c727b2 | 9698 | |
dee91e82 | 9699 | static void |
95554aad | 9700 | load_full_comp_unit (struct dwarf2_per_cu_data *this_cu, |
58f0c718 | 9701 | bool skip_partial, |
95554aad | 9702 | enum language pretend_language) |
dee91e82 | 9703 | { |
3019eac3 | 9704 | gdb_assert (! this_cu->is_debug_types); |
c5b7e1cb | 9705 | |
58f0c718 | 9706 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, skip_partial, |
f4dc4d17 | 9707 | load_full_comp_unit_reader, &pretend_language); |
10b3939b DJ |
9708 | } |
9709 | ||
3da10d80 KS |
9710 | /* Add a DIE to the delayed physname list. */ |
9711 | ||
9712 | static void | |
9713 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
9714 | const char *name, struct die_info *die, | |
9715 | struct dwarf2_cu *cu) | |
9716 | { | |
9717 | struct delayed_method_info mi; | |
9718 | mi.type = type; | |
9719 | mi.fnfield_index = fnfield_index; | |
9720 | mi.index = index; | |
9721 | mi.name = name; | |
9722 | mi.die = die; | |
c89b44cd | 9723 | cu->method_list.push_back (mi); |
3da10d80 KS |
9724 | } |
9725 | ||
3693fdb3 PA |
9726 | /* Check whether [PHYSNAME, PHYSNAME+LEN) ends with a modifier like |
9727 | "const" / "volatile". If so, decrements LEN by the length of the | |
9728 | modifier and return true. Otherwise return false. */ | |
9729 | ||
9730 | template<size_t N> | |
9731 | static bool | |
9732 | check_modifier (const char *physname, size_t &len, const char (&mod)[N]) | |
9733 | { | |
9734 | size_t mod_len = sizeof (mod) - 1; | |
9735 | if (len > mod_len && startswith (physname + (len - mod_len), mod)) | |
9736 | { | |
9737 | len -= mod_len; | |
9738 | return true; | |
9739 | } | |
9740 | return false; | |
9741 | } | |
9742 | ||
3da10d80 KS |
9743 | /* Compute the physnames of any methods on the CU's method list. |
9744 | ||
9745 | The computation of method physnames is delayed in order to avoid the | |
9746 | (bad) condition that one of the method's formal parameters is of an as yet | |
9747 | incomplete type. */ | |
9748 | ||
9749 | static void | |
9750 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
9751 | { | |
3693fdb3 | 9752 | /* Only C++ delays computing physnames. */ |
c89b44cd | 9753 | if (cu->method_list.empty ()) |
3693fdb3 PA |
9754 | return; |
9755 | gdb_assert (cu->language == language_cplus); | |
9756 | ||
52941706 | 9757 | for (const delayed_method_info &mi : cu->method_list) |
3da10d80 | 9758 | { |
1d06ead6 | 9759 | const char *physname; |
3da10d80 | 9760 | struct fn_fieldlist *fn_flp |
c89b44cd TT |
9761 | = &TYPE_FN_FIELDLIST (mi.type, mi.fnfield_index); |
9762 | physname = dwarf2_physname (mi.name, mi.die, cu); | |
9763 | TYPE_FN_FIELD_PHYSNAME (fn_flp->fn_fields, mi.index) | |
005e54bb | 9764 | = physname ? physname : ""; |
3693fdb3 PA |
9765 | |
9766 | /* Since there's no tag to indicate whether a method is a | |
9767 | const/volatile overload, extract that information out of the | |
9768 | demangled name. */ | |
9769 | if (physname != NULL) | |
9770 | { | |
9771 | size_t len = strlen (physname); | |
9772 | ||
9773 | while (1) | |
9774 | { | |
9775 | if (physname[len] == ')') /* shortcut */ | |
9776 | break; | |
9777 | else if (check_modifier (physname, len, " const")) | |
c89b44cd | 9778 | TYPE_FN_FIELD_CONST (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 | 9779 | else if (check_modifier (physname, len, " volatile")) |
c89b44cd | 9780 | TYPE_FN_FIELD_VOLATILE (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 PA |
9781 | else |
9782 | break; | |
9783 | } | |
9784 | } | |
3da10d80 | 9785 | } |
c89b44cd TT |
9786 | |
9787 | /* The list is no longer needed. */ | |
9788 | cu->method_list.clear (); | |
3da10d80 KS |
9789 | } |
9790 | ||
380618d6 KS |
9791 | /* A wrapper for add_symbol_to_list to ensure that SYMBOL's language is |
9792 | the same as all other symbols in LISTHEAD. If a new symbol is added | |
9793 | with a different language, this function asserts. */ | |
9794 | ||
9795 | static inline void | |
9796 | dw2_add_symbol_to_list (struct symbol *symbol, struct pending **listhead) | |
9797 | { | |
9798 | /* Only assert if LISTHEAD already contains symbols of a different | |
9799 | language (dict_create_hashed/insert_symbol_hashed requires that all | |
9800 | symbols in this list are of the same language). */ | |
9801 | gdb_assert ((*listhead) == NULL | |
9802 | || (SYMBOL_LANGUAGE ((*listhead)->symbol[0]) | |
9803 | == SYMBOL_LANGUAGE (symbol))); | |
9804 | ||
9805 | add_symbol_to_list (symbol, listhead); | |
9806 | } | |
9807 | ||
a766d390 DE |
9808 | /* Go objects should be embedded in a DW_TAG_module DIE, |
9809 | and it's not clear if/how imported objects will appear. | |
9810 | To keep Go support simple until that's worked out, | |
9811 | go back through what we've read and create something usable. | |
9812 | We could do this while processing each DIE, and feels kinda cleaner, | |
9813 | but that way is more invasive. | |
9814 | This is to, for example, allow the user to type "p var" or "b main" | |
9815 | without having to specify the package name, and allow lookups | |
9816 | of module.object to work in contexts that use the expression | |
9817 | parser. */ | |
9818 | ||
9819 | static void | |
9820 | fixup_go_packaging (struct dwarf2_cu *cu) | |
9821 | { | |
9822 | char *package_name = NULL; | |
9823 | struct pending *list; | |
9824 | int i; | |
9825 | ||
804d2729 TT |
9826 | for (list = *cu->builder->get_global_symbols (); |
9827 | list != NULL; | |
9828 | list = list->next) | |
a766d390 DE |
9829 | { |
9830 | for (i = 0; i < list->nsyms; ++i) | |
9831 | { | |
9832 | struct symbol *sym = list->symbol[i]; | |
9833 | ||
9834 | if (SYMBOL_LANGUAGE (sym) == language_go | |
9835 | && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
9836 | { | |
9837 | char *this_package_name = go_symbol_package_name (sym); | |
9838 | ||
9839 | if (this_package_name == NULL) | |
9840 | continue; | |
9841 | if (package_name == NULL) | |
9842 | package_name = this_package_name; | |
9843 | else | |
9844 | { | |
518817b3 SM |
9845 | struct objfile *objfile |
9846 | = cu->per_cu->dwarf2_per_objfile->objfile; | |
a766d390 | 9847 | if (strcmp (package_name, this_package_name) != 0) |
b98664d3 | 9848 | complaint (_("Symtab %s has objects from two different Go packages: %s and %s"), |
08be3fe3 DE |
9849 | (symbol_symtab (sym) != NULL |
9850 | ? symtab_to_filename_for_display | |
9851 | (symbol_symtab (sym)) | |
e3b94546 | 9852 | : objfile_name (objfile)), |
a766d390 DE |
9853 | this_package_name, package_name); |
9854 | xfree (this_package_name); | |
9855 | } | |
9856 | } | |
9857 | } | |
9858 | } | |
9859 | ||
9860 | if (package_name != NULL) | |
9861 | { | |
518817b3 | 9862 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
34a68019 | 9863 | const char *saved_package_name |
224c3ddb SM |
9864 | = (const char *) obstack_copy0 (&objfile->per_bfd->storage_obstack, |
9865 | package_name, | |
9866 | strlen (package_name)); | |
19f392bc UW |
9867 | struct type *type = init_type (objfile, TYPE_CODE_MODULE, 0, |
9868 | saved_package_name); | |
a766d390 DE |
9869 | struct symbol *sym; |
9870 | ||
e623cf5d | 9871 | sym = allocate_symbol (objfile); |
f85f34ed | 9872 | SYMBOL_SET_LANGUAGE (sym, language_go, &objfile->objfile_obstack); |
86f62fd7 TT |
9873 | SYMBOL_SET_NAMES (sym, saved_package_name, |
9874 | strlen (saved_package_name), 0, objfile); | |
a766d390 DE |
9875 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, |
9876 | e.g., "main" finds the "main" module and not C's main(). */ | |
9877 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
f1e6e072 | 9878 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
a766d390 DE |
9879 | SYMBOL_TYPE (sym) = type; |
9880 | ||
380618d6 | 9881 | dw2_add_symbol_to_list (sym, cu->builder->get_global_symbols ()); |
a766d390 DE |
9882 | |
9883 | xfree (package_name); | |
9884 | } | |
9885 | } | |
9886 | ||
c9317f21 TT |
9887 | /* Allocate a fully-qualified name consisting of the two parts on the |
9888 | obstack. */ | |
9889 | ||
9890 | static const char * | |
9891 | rust_fully_qualify (struct obstack *obstack, const char *p1, const char *p2) | |
9892 | { | |
9893 | return obconcat (obstack, p1, "::", p2, (char *) NULL); | |
9894 | } | |
9895 | ||
9896 | /* A helper that allocates a struct discriminant_info to attach to a | |
9897 | union type. */ | |
9898 | ||
9899 | static struct discriminant_info * | |
9900 | alloc_discriminant_info (struct type *type, int discriminant_index, | |
9901 | int default_index) | |
9902 | { | |
9903 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_UNION); | |
c7b15a66 TT |
9904 | gdb_assert (discriminant_index == -1 |
9905 | || (discriminant_index >= 0 | |
9906 | && discriminant_index < TYPE_NFIELDS (type))); | |
c9317f21 | 9907 | gdb_assert (default_index == -1 |
c7b15a66 | 9908 | || (default_index >= 0 && default_index < TYPE_NFIELDS (type))); |
c9317f21 TT |
9909 | |
9910 | TYPE_FLAG_DISCRIMINATED_UNION (type) = 1; | |
9911 | ||
9912 | struct discriminant_info *disc | |
9913 | = ((struct discriminant_info *) | |
9914 | TYPE_ZALLOC (type, | |
9915 | offsetof (struct discriminant_info, discriminants) | |
9916 | + TYPE_NFIELDS (type) * sizeof (disc->discriminants[0]))); | |
9917 | disc->default_index = default_index; | |
9918 | disc->discriminant_index = discriminant_index; | |
9919 | ||
9920 | struct dynamic_prop prop; | |
9921 | prop.kind = PROP_UNDEFINED; | |
9922 | prop.data.baton = disc; | |
9923 | ||
9924 | add_dyn_prop (DYN_PROP_DISCRIMINATED, prop, type); | |
9925 | ||
9926 | return disc; | |
9927 | } | |
9928 | ||
9929 | /* Some versions of rustc emitted enums in an unusual way. | |
9930 | ||
9931 | Ordinary enums were emitted as unions. The first element of each | |
9932 | structure in the union was named "RUST$ENUM$DISR". This element | |
9933 | held the discriminant. | |
9934 | ||
9935 | These versions of Rust also implemented the "non-zero" | |
9936 | optimization. When the enum had two values, and one is empty and | |
9937 | the other holds a pointer that cannot be zero, the pointer is used | |
9938 | as the discriminant, with a zero value meaning the empty variant. | |
9939 | Here, the union's first member is of the form | |
9940 | RUST$ENCODED$ENUM$<fieldno>$<fieldno>$...$<variantname> | |
9941 | where the fieldnos are the indices of the fields that should be | |
9942 | traversed in order to find the field (which may be several fields deep) | |
9943 | and the variantname is the name of the variant of the case when the | |
9944 | field is zero. | |
9945 | ||
9946 | This function recognizes whether TYPE is of one of these forms, | |
9947 | and, if so, smashes it to be a variant type. */ | |
9948 | ||
9949 | static void | |
9950 | quirk_rust_enum (struct type *type, struct objfile *objfile) | |
9951 | { | |
9952 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_UNION); | |
9953 | ||
9954 | /* We don't need to deal with empty enums. */ | |
9955 | if (TYPE_NFIELDS (type) == 0) | |
9956 | return; | |
9957 | ||
9958 | #define RUST_ENUM_PREFIX "RUST$ENCODED$ENUM$" | |
9959 | if (TYPE_NFIELDS (type) == 1 | |
9960 | && startswith (TYPE_FIELD_NAME (type, 0), RUST_ENUM_PREFIX)) | |
9961 | { | |
9962 | const char *name = TYPE_FIELD_NAME (type, 0) + strlen (RUST_ENUM_PREFIX); | |
9963 | ||
9964 | /* Decode the field name to find the offset of the | |
9965 | discriminant. */ | |
9966 | ULONGEST bit_offset = 0; | |
9967 | struct type *field_type = TYPE_FIELD_TYPE (type, 0); | |
9968 | while (name[0] >= '0' && name[0] <= '9') | |
9969 | { | |
9970 | char *tail; | |
9971 | unsigned long index = strtoul (name, &tail, 10); | |
9972 | name = tail; | |
9973 | if (*name != '$' | |
9974 | || index >= TYPE_NFIELDS (field_type) | |
9975 | || (TYPE_FIELD_LOC_KIND (field_type, index) | |
9976 | != FIELD_LOC_KIND_BITPOS)) | |
9977 | { | |
b98664d3 | 9978 | complaint (_("Could not parse Rust enum encoding string \"%s\"" |
c9317f21 TT |
9979 | "[in module %s]"), |
9980 | TYPE_FIELD_NAME (type, 0), | |
9981 | objfile_name (objfile)); | |
9982 | return; | |
9983 | } | |
9984 | ++name; | |
9985 | ||
9986 | bit_offset += TYPE_FIELD_BITPOS (field_type, index); | |
9987 | field_type = TYPE_FIELD_TYPE (field_type, index); | |
9988 | } | |
9989 | ||
9990 | /* Make a union to hold the variants. */ | |
9991 | struct type *union_type = alloc_type (objfile); | |
9992 | TYPE_CODE (union_type) = TYPE_CODE_UNION; | |
9993 | TYPE_NFIELDS (union_type) = 3; | |
9994 | TYPE_FIELDS (union_type) | |
9995 | = (struct field *) TYPE_ZALLOC (type, 3 * sizeof (struct field)); | |
9996 | TYPE_LENGTH (union_type) = TYPE_LENGTH (type); | |
2b4424c3 | 9997 | set_type_align (union_type, TYPE_RAW_ALIGN (type)); |
c9317f21 TT |
9998 | |
9999 | /* Put the discriminant must at index 0. */ | |
10000 | TYPE_FIELD_TYPE (union_type, 0) = field_type; | |
10001 | TYPE_FIELD_ARTIFICIAL (union_type, 0) = 1; | |
10002 | TYPE_FIELD_NAME (union_type, 0) = "<<discriminant>>"; | |
10003 | SET_FIELD_BITPOS (TYPE_FIELD (union_type, 0), bit_offset); | |
10004 | ||
10005 | /* The order of fields doesn't really matter, so put the real | |
10006 | field at index 1 and the data-less field at index 2. */ | |
10007 | struct discriminant_info *disc | |
10008 | = alloc_discriminant_info (union_type, 0, 1); | |
10009 | TYPE_FIELD (union_type, 1) = TYPE_FIELD (type, 0); | |
10010 | TYPE_FIELD_NAME (union_type, 1) | |
10011 | = rust_last_path_segment (TYPE_NAME (TYPE_FIELD_TYPE (union_type, 1))); | |
10012 | TYPE_NAME (TYPE_FIELD_TYPE (union_type, 1)) | |
10013 | = rust_fully_qualify (&objfile->objfile_obstack, TYPE_NAME (type), | |
10014 | TYPE_FIELD_NAME (union_type, 1)); | |
10015 | ||
10016 | const char *dataless_name | |
10017 | = rust_fully_qualify (&objfile->objfile_obstack, TYPE_NAME (type), | |
10018 | name); | |
10019 | struct type *dataless_type = init_type (objfile, TYPE_CODE_VOID, 0, | |
10020 | dataless_name); | |
10021 | TYPE_FIELD_TYPE (union_type, 2) = dataless_type; | |
10022 | /* NAME points into the original discriminant name, which | |
10023 | already has the correct lifetime. */ | |
10024 | TYPE_FIELD_NAME (union_type, 2) = name; | |
10025 | SET_FIELD_BITPOS (TYPE_FIELD (union_type, 2), 0); | |
10026 | disc->discriminants[2] = 0; | |
10027 | ||
10028 | /* Smash this type to be a structure type. We have to do this | |
10029 | because the type has already been recorded. */ | |
10030 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
10031 | TYPE_NFIELDS (type) = 1; | |
10032 | TYPE_FIELDS (type) | |
10033 | = (struct field *) TYPE_ZALLOC (type, sizeof (struct field)); | |
10034 | ||
10035 | /* Install the variant part. */ | |
10036 | TYPE_FIELD_TYPE (type, 0) = union_type; | |
10037 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), 0); | |
10038 | TYPE_FIELD_NAME (type, 0) = "<<variants>>"; | |
10039 | } | |
10040 | else if (TYPE_NFIELDS (type) == 1) | |
10041 | { | |
10042 | /* We assume that a union with a single field is a univariant | |
10043 | enum. */ | |
10044 | /* Smash this type to be a structure type. We have to do this | |
10045 | because the type has already been recorded. */ | |
10046 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
10047 | ||
10048 | /* Make a union to hold the variants. */ | |
10049 | struct type *union_type = alloc_type (objfile); | |
10050 | TYPE_CODE (union_type) = TYPE_CODE_UNION; | |
10051 | TYPE_NFIELDS (union_type) = TYPE_NFIELDS (type); | |
10052 | TYPE_LENGTH (union_type) = TYPE_LENGTH (type); | |
2b4424c3 | 10053 | set_type_align (union_type, TYPE_RAW_ALIGN (type)); |
c9317f21 TT |
10054 | TYPE_FIELDS (union_type) = TYPE_FIELDS (type); |
10055 | ||
10056 | struct type *field_type = TYPE_FIELD_TYPE (union_type, 0); | |
10057 | const char *variant_name | |
10058 | = rust_last_path_segment (TYPE_NAME (field_type)); | |
10059 | TYPE_FIELD_NAME (union_type, 0) = variant_name; | |
10060 | TYPE_NAME (field_type) | |
10061 | = rust_fully_qualify (&objfile->objfile_obstack, | |
c7b15a66 | 10062 | TYPE_NAME (type), variant_name); |
c9317f21 TT |
10063 | |
10064 | /* Install the union in the outer struct type. */ | |
10065 | TYPE_NFIELDS (type) = 1; | |
10066 | TYPE_FIELDS (type) | |
10067 | = (struct field *) TYPE_ZALLOC (union_type, sizeof (struct field)); | |
10068 | TYPE_FIELD_TYPE (type, 0) = union_type; | |
10069 | TYPE_FIELD_NAME (type, 0) = "<<variants>>"; | |
10070 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), 0); | |
10071 | ||
10072 | alloc_discriminant_info (union_type, -1, 0); | |
10073 | } | |
10074 | else | |
10075 | { | |
10076 | struct type *disr_type = nullptr; | |
10077 | for (int i = 0; i < TYPE_NFIELDS (type); ++i) | |
10078 | { | |
10079 | disr_type = TYPE_FIELD_TYPE (type, i); | |
10080 | ||
a037790e TT |
10081 | if (TYPE_CODE (disr_type) != TYPE_CODE_STRUCT) |
10082 | { | |
10083 | /* All fields of a true enum will be structs. */ | |
10084 | return; | |
10085 | } | |
10086 | else if (TYPE_NFIELDS (disr_type) == 0) | |
c9317f21 TT |
10087 | { |
10088 | /* Could be data-less variant, so keep going. */ | |
a037790e | 10089 | disr_type = nullptr; |
c9317f21 TT |
10090 | } |
10091 | else if (strcmp (TYPE_FIELD_NAME (disr_type, 0), | |
10092 | "RUST$ENUM$DISR") != 0) | |
10093 | { | |
10094 | /* Not a Rust enum. */ | |
10095 | return; | |
10096 | } | |
10097 | else | |
10098 | { | |
10099 | /* Found one. */ | |
10100 | break; | |
10101 | } | |
10102 | } | |
10103 | ||
10104 | /* If we got here without a discriminant, then it's probably | |
10105 | just a union. */ | |
10106 | if (disr_type == nullptr) | |
10107 | return; | |
10108 | ||
10109 | /* Smash this type to be a structure type. We have to do this | |
10110 | because the type has already been recorded. */ | |
10111 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
10112 | ||
10113 | /* Make a union to hold the variants. */ | |
10114 | struct field *disr_field = &TYPE_FIELD (disr_type, 0); | |
10115 | struct type *union_type = alloc_type (objfile); | |
10116 | TYPE_CODE (union_type) = TYPE_CODE_UNION; | |
10117 | TYPE_NFIELDS (union_type) = 1 + TYPE_NFIELDS (type); | |
10118 | TYPE_LENGTH (union_type) = TYPE_LENGTH (type); | |
2b4424c3 | 10119 | set_type_align (union_type, TYPE_RAW_ALIGN (type)); |
c9317f21 TT |
10120 | TYPE_FIELDS (union_type) |
10121 | = (struct field *) TYPE_ZALLOC (union_type, | |
10122 | (TYPE_NFIELDS (union_type) | |
10123 | * sizeof (struct field))); | |
10124 | ||
10125 | memcpy (TYPE_FIELDS (union_type) + 1, TYPE_FIELDS (type), | |
10126 | TYPE_NFIELDS (type) * sizeof (struct field)); | |
10127 | ||
10128 | /* Install the discriminant at index 0 in the union. */ | |
10129 | TYPE_FIELD (union_type, 0) = *disr_field; | |
10130 | TYPE_FIELD_ARTIFICIAL (union_type, 0) = 1; | |
10131 | TYPE_FIELD_NAME (union_type, 0) = "<<discriminant>>"; | |
10132 | ||
10133 | /* Install the union in the outer struct type. */ | |
10134 | TYPE_FIELD_TYPE (type, 0) = union_type; | |
10135 | TYPE_FIELD_NAME (type, 0) = "<<variants>>"; | |
10136 | TYPE_NFIELDS (type) = 1; | |
10137 | ||
10138 | /* Set the size and offset of the union type. */ | |
10139 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), 0); | |
10140 | ||
10141 | /* We need a way to find the correct discriminant given a | |
10142 | variant name. For convenience we build a map here. */ | |
10143 | struct type *enum_type = FIELD_TYPE (*disr_field); | |
10144 | std::unordered_map<std::string, ULONGEST> discriminant_map; | |
10145 | for (int i = 0; i < TYPE_NFIELDS (enum_type); ++i) | |
10146 | { | |
10147 | if (TYPE_FIELD_LOC_KIND (enum_type, i) == FIELD_LOC_KIND_ENUMVAL) | |
10148 | { | |
10149 | const char *name | |
10150 | = rust_last_path_segment (TYPE_FIELD_NAME (enum_type, i)); | |
10151 | discriminant_map[name] = TYPE_FIELD_ENUMVAL (enum_type, i); | |
10152 | } | |
10153 | } | |
10154 | ||
10155 | int n_fields = TYPE_NFIELDS (union_type); | |
10156 | struct discriminant_info *disc | |
10157 | = alloc_discriminant_info (union_type, 0, -1); | |
10158 | /* Skip the discriminant here. */ | |
10159 | for (int i = 1; i < n_fields; ++i) | |
10160 | { | |
10161 | /* Find the final word in the name of this variant's type. | |
10162 | That name can be used to look up the correct | |
10163 | discriminant. */ | |
10164 | const char *variant_name | |
10165 | = rust_last_path_segment (TYPE_NAME (TYPE_FIELD_TYPE (union_type, | |
10166 | i))); | |
10167 | ||
10168 | auto iter = discriminant_map.find (variant_name); | |
10169 | if (iter != discriminant_map.end ()) | |
10170 | disc->discriminants[i] = iter->second; | |
10171 | ||
bedda9ac | 10172 | /* Remove the discriminant field, if it exists. */ |
c9317f21 | 10173 | struct type *sub_type = TYPE_FIELD_TYPE (union_type, i); |
bedda9ac TT |
10174 | if (TYPE_NFIELDS (sub_type) > 0) |
10175 | { | |
10176 | --TYPE_NFIELDS (sub_type); | |
10177 | ++TYPE_FIELDS (sub_type); | |
10178 | } | |
c9317f21 TT |
10179 | TYPE_FIELD_NAME (union_type, i) = variant_name; |
10180 | TYPE_NAME (sub_type) | |
10181 | = rust_fully_qualify (&objfile->objfile_obstack, | |
10182 | TYPE_NAME (type), variant_name); | |
10183 | } | |
10184 | } | |
10185 | } | |
10186 | ||
10187 | /* Rewrite some Rust unions to be structures with variants parts. */ | |
10188 | ||
10189 | static void | |
10190 | rust_union_quirks (struct dwarf2_cu *cu) | |
10191 | { | |
10192 | gdb_assert (cu->language == language_rust); | |
52941706 SM |
10193 | for (type *type_ : cu->rust_unions) |
10194 | quirk_rust_enum (type_, cu->per_cu->dwarf2_per_objfile->objfile); | |
2d79090e TT |
10195 | /* We don't need this any more. */ |
10196 | cu->rust_unions.clear (); | |
c9317f21 TT |
10197 | } |
10198 | ||
95554aad TT |
10199 | /* Return the symtab for PER_CU. This works properly regardless of |
10200 | whether we're using the index or psymtabs. */ | |
10201 | ||
43f3e411 DE |
10202 | static struct compunit_symtab * |
10203 | get_compunit_symtab (struct dwarf2_per_cu_data *per_cu) | |
95554aad | 10204 | { |
ed2dc618 | 10205 | return (per_cu->dwarf2_per_objfile->using_index |
43f3e411 DE |
10206 | ? per_cu->v.quick->compunit_symtab |
10207 | : per_cu->v.psymtab->compunit_symtab); | |
95554aad TT |
10208 | } |
10209 | ||
10210 | /* A helper function for computing the list of all symbol tables | |
10211 | included by PER_CU. */ | |
10212 | ||
10213 | static void | |
43f3e411 | 10214 | recursively_compute_inclusions (VEC (compunit_symtab_ptr) **result, |
ec94af83 | 10215 | htab_t all_children, htab_t all_type_symtabs, |
f9125b6c | 10216 | struct dwarf2_per_cu_data *per_cu, |
43f3e411 | 10217 | struct compunit_symtab *immediate_parent) |
95554aad TT |
10218 | { |
10219 | void **slot; | |
10220 | int ix; | |
43f3e411 | 10221 | struct compunit_symtab *cust; |
95554aad TT |
10222 | struct dwarf2_per_cu_data *iter; |
10223 | ||
10224 | slot = htab_find_slot (all_children, per_cu, INSERT); | |
10225 | if (*slot != NULL) | |
10226 | { | |
10227 | /* This inclusion and its children have been processed. */ | |
10228 | return; | |
10229 | } | |
10230 | ||
10231 | *slot = per_cu; | |
10232 | /* Only add a CU if it has a symbol table. */ | |
43f3e411 DE |
10233 | cust = get_compunit_symtab (per_cu); |
10234 | if (cust != NULL) | |
ec94af83 DE |
10235 | { |
10236 | /* If this is a type unit only add its symbol table if we haven't | |
10237 | seen it yet (type unit per_cu's can share symtabs). */ | |
10238 | if (per_cu->is_debug_types) | |
10239 | { | |
43f3e411 | 10240 | slot = htab_find_slot (all_type_symtabs, cust, INSERT); |
ec94af83 DE |
10241 | if (*slot == NULL) |
10242 | { | |
43f3e411 DE |
10243 | *slot = cust; |
10244 | VEC_safe_push (compunit_symtab_ptr, *result, cust); | |
10245 | if (cust->user == NULL) | |
10246 | cust->user = immediate_parent; | |
ec94af83 DE |
10247 | } |
10248 | } | |
10249 | else | |
f9125b6c | 10250 | { |
43f3e411 DE |
10251 | VEC_safe_push (compunit_symtab_ptr, *result, cust); |
10252 | if (cust->user == NULL) | |
10253 | cust->user = immediate_parent; | |
f9125b6c | 10254 | } |
ec94af83 | 10255 | } |
95554aad TT |
10256 | |
10257 | for (ix = 0; | |
796a7ff8 | 10258 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, ix, iter); |
95554aad | 10259 | ++ix) |
ec94af83 DE |
10260 | { |
10261 | recursively_compute_inclusions (result, all_children, | |
43f3e411 | 10262 | all_type_symtabs, iter, cust); |
ec94af83 | 10263 | } |
95554aad TT |
10264 | } |
10265 | ||
43f3e411 | 10266 | /* Compute the compunit_symtab 'includes' fields for the compunit_symtab of |
95554aad TT |
10267 | PER_CU. */ |
10268 | ||
10269 | static void | |
43f3e411 | 10270 | compute_compunit_symtab_includes (struct dwarf2_per_cu_data *per_cu) |
95554aad | 10271 | { |
f4dc4d17 DE |
10272 | gdb_assert (! per_cu->is_debug_types); |
10273 | ||
796a7ff8 | 10274 | if (!VEC_empty (dwarf2_per_cu_ptr, per_cu->imported_symtabs)) |
95554aad TT |
10275 | { |
10276 | int ix, len; | |
ec94af83 | 10277 | struct dwarf2_per_cu_data *per_cu_iter; |
43f3e411 DE |
10278 | struct compunit_symtab *compunit_symtab_iter; |
10279 | VEC (compunit_symtab_ptr) *result_symtabs = NULL; | |
ec94af83 | 10280 | htab_t all_children, all_type_symtabs; |
43f3e411 | 10281 | struct compunit_symtab *cust = get_compunit_symtab (per_cu); |
95554aad TT |
10282 | |
10283 | /* If we don't have a symtab, we can just skip this case. */ | |
43f3e411 | 10284 | if (cust == NULL) |
95554aad TT |
10285 | return; |
10286 | ||
10287 | all_children = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, | |
10288 | NULL, xcalloc, xfree); | |
ec94af83 DE |
10289 | all_type_symtabs = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
10290 | NULL, xcalloc, xfree); | |
95554aad TT |
10291 | |
10292 | for (ix = 0; | |
796a7ff8 | 10293 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, |
ec94af83 | 10294 | ix, per_cu_iter); |
95554aad | 10295 | ++ix) |
ec94af83 DE |
10296 | { |
10297 | recursively_compute_inclusions (&result_symtabs, all_children, | |
f9125b6c | 10298 | all_type_symtabs, per_cu_iter, |
43f3e411 | 10299 | cust); |
ec94af83 | 10300 | } |
95554aad | 10301 | |
ec94af83 | 10302 | /* Now we have a transitive closure of all the included symtabs. */ |
43f3e411 DE |
10303 | len = VEC_length (compunit_symtab_ptr, result_symtabs); |
10304 | cust->includes | |
ed2dc618 | 10305 | = XOBNEWVEC (&per_cu->dwarf2_per_objfile->objfile->objfile_obstack, |
8d749320 | 10306 | struct compunit_symtab *, len + 1); |
95554aad | 10307 | for (ix = 0; |
43f3e411 DE |
10308 | VEC_iterate (compunit_symtab_ptr, result_symtabs, ix, |
10309 | compunit_symtab_iter); | |
95554aad | 10310 | ++ix) |
43f3e411 DE |
10311 | cust->includes[ix] = compunit_symtab_iter; |
10312 | cust->includes[len] = NULL; | |
95554aad | 10313 | |
43f3e411 | 10314 | VEC_free (compunit_symtab_ptr, result_symtabs); |
95554aad | 10315 | htab_delete (all_children); |
ec94af83 | 10316 | htab_delete (all_type_symtabs); |
95554aad TT |
10317 | } |
10318 | } | |
10319 | ||
10320 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
10321 | read. */ | |
10322 | ||
10323 | static void | |
ed2dc618 | 10324 | process_cu_includes (struct dwarf2_per_objfile *dwarf2_per_objfile) |
95554aad | 10325 | { |
71b73764 | 10326 | for (dwarf2_per_cu_data *iter : dwarf2_per_objfile->just_read_cus) |
f4dc4d17 DE |
10327 | { |
10328 | if (! iter->is_debug_types) | |
43f3e411 | 10329 | compute_compunit_symtab_includes (iter); |
f4dc4d17 | 10330 | } |
95554aad | 10331 | |
c5d0225d | 10332 | dwarf2_per_objfile->just_read_cus.clear (); |
95554aad TT |
10333 | } |
10334 | ||
9cdd5dbd | 10335 | /* Generate full symbol information for PER_CU, whose DIEs have |
10b3939b DJ |
10336 | already been loaded into memory. */ |
10337 | ||
10338 | static void | |
95554aad TT |
10339 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu, |
10340 | enum language pretend_language) | |
10b3939b | 10341 | { |
10b3939b | 10342 | struct dwarf2_cu *cu = per_cu->cu; |
ed2dc618 SM |
10343 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
10344 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
3e29f34a | 10345 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
10b3939b | 10346 | CORE_ADDR lowpc, highpc; |
43f3e411 | 10347 | struct compunit_symtab *cust; |
10b3939b | 10348 | CORE_ADDR baseaddr; |
4359dff1 | 10349 | struct block *static_block; |
3e29f34a | 10350 | CORE_ADDR addr; |
10b3939b DJ |
10351 | |
10352 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
10353 | ||
c89b44cd TT |
10354 | /* Clear the list here in case something was left over. */ |
10355 | cu->method_list.clear (); | |
10b3939b | 10356 | |
95554aad TT |
10357 | cu->language = pretend_language; |
10358 | cu->language_defn = language_def (cu->language); | |
10359 | ||
c906108c | 10360 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 10361 | process_die (cu->dies, cu); |
c906108c | 10362 | |
a766d390 DE |
10363 | /* For now fudge the Go package. */ |
10364 | if (cu->language == language_go) | |
10365 | fixup_go_packaging (cu); | |
10366 | ||
3da10d80 KS |
10367 | /* Now that we have processed all the DIEs in the CU, all the types |
10368 | should be complete, and it should now be safe to compute all of the | |
10369 | physnames. */ | |
10370 | compute_delayed_physnames (cu); | |
3da10d80 | 10371 | |
c9317f21 TT |
10372 | if (cu->language == language_rust) |
10373 | rust_union_quirks (cu); | |
10374 | ||
fae299cd DC |
10375 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
10376 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
10377 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 10378 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 10379 | |
3e29f34a | 10380 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); |
804d2729 | 10381 | static_block = cu->builder->end_symtab_get_static_block (addr, 0, 1); |
4359dff1 JK |
10382 | |
10383 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
10384 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
10385 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
10386 | addrmap to help ensure it has an accurate map of pc values belonging to | |
10387 | this comp unit. */ | |
10388 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
10389 | ||
804d2729 TT |
10390 | cust = cu->builder->end_symtab_from_static_block (static_block, |
10391 | SECT_OFF_TEXT (objfile), | |
10392 | 0); | |
c906108c | 10393 | |
43f3e411 | 10394 | if (cust != NULL) |
c906108c | 10395 | { |
df15bd07 | 10396 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 10397 | |
8be455d7 JK |
10398 | /* Set symtab language to language from DW_AT_language. If the |
10399 | compilation is from a C file generated by language preprocessors, do | |
10400 | not set the language if it was already deduced by start_subfile. */ | |
43f3e411 | 10401 | if (!(cu->language == language_c |
40e3ad0e | 10402 | && COMPUNIT_FILETABS (cust)->language != language_unknown)) |
43f3e411 | 10403 | COMPUNIT_FILETABS (cust)->language = cu->language; |
8be455d7 JK |
10404 | |
10405 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
10406 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
10407 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
10408 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
10409 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
10410 | |
10411 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
10412 | needed, it would be wrong due to missing DW_AT_producer there. | |
10413 | ||
10414 | Still one can confuse GDB by using non-standard GCC compilation | |
10415 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
10416 | */ | |
ab260dad | 10417 | if (cu->has_loclist && gcc_4_minor >= 5) |
43f3e411 | 10418 | cust->locations_valid = 1; |
e0d00bc7 JK |
10419 | |
10420 | if (gcc_4_minor >= 5) | |
43f3e411 | 10421 | cust->epilogue_unwind_valid = 1; |
96408a79 | 10422 | |
43f3e411 | 10423 | cust->call_site_htab = cu->call_site_htab; |
c906108c | 10424 | } |
9291a0cd TT |
10425 | |
10426 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 10427 | per_cu->v.quick->compunit_symtab = cust; |
9291a0cd TT |
10428 | else |
10429 | { | |
10430 | struct partial_symtab *pst = per_cu->v.psymtab; | |
43f3e411 | 10431 | pst->compunit_symtab = cust; |
9291a0cd TT |
10432 | pst->readin = 1; |
10433 | } | |
c906108c | 10434 | |
95554aad | 10435 | /* Push it for inclusion processing later. */ |
c5d0225d | 10436 | dwarf2_per_objfile->just_read_cus.push_back (per_cu); |
804d2729 TT |
10437 | |
10438 | /* Not needed any more. */ | |
10439 | cu->builder.reset (); | |
f4dc4d17 | 10440 | } |
45cfd468 | 10441 | |
f4dc4d17 DE |
10442 | /* Generate full symbol information for type unit PER_CU, whose DIEs have |
10443 | already been loaded into memory. */ | |
10444 | ||
10445 | static void | |
10446 | process_full_type_unit (struct dwarf2_per_cu_data *per_cu, | |
10447 | enum language pretend_language) | |
10448 | { | |
10449 | struct dwarf2_cu *cu = per_cu->cu; | |
ed2dc618 SM |
10450 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
10451 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
43f3e411 | 10452 | struct compunit_symtab *cust; |
0186c6a7 DE |
10453 | struct signatured_type *sig_type; |
10454 | ||
10455 | gdb_assert (per_cu->is_debug_types); | |
10456 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 | 10457 | |
c89b44cd TT |
10458 | /* Clear the list here in case something was left over. */ |
10459 | cu->method_list.clear (); | |
f4dc4d17 | 10460 | |
f4dc4d17 DE |
10461 | cu->language = pretend_language; |
10462 | cu->language_defn = language_def (cu->language); | |
10463 | ||
10464 | /* The symbol tables are set up in read_type_unit_scope. */ | |
10465 | process_die (cu->dies, cu); | |
10466 | ||
10467 | /* For now fudge the Go package. */ | |
10468 | if (cu->language == language_go) | |
10469 | fixup_go_packaging (cu); | |
10470 | ||
10471 | /* Now that we have processed all the DIEs in the CU, all the types | |
10472 | should be complete, and it should now be safe to compute all of the | |
10473 | physnames. */ | |
10474 | compute_delayed_physnames (cu); | |
f4dc4d17 | 10475 | |
c9317f21 TT |
10476 | if (cu->language == language_rust) |
10477 | rust_union_quirks (cu); | |
10478 | ||
f4dc4d17 DE |
10479 | /* TUs share symbol tables. |
10480 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
10481 | of it with end_expandable_symtab. Otherwise, complete the addition of |
10482 | this TU's symbols to the existing symtab. */ | |
43f3e411 | 10483 | if (sig_type->type_unit_group->compunit_symtab == NULL) |
45cfd468 | 10484 | { |
804d2729 | 10485 | cust = cu->builder->end_expandable_symtab (0, SECT_OFF_TEXT (objfile)); |
43f3e411 | 10486 | sig_type->type_unit_group->compunit_symtab = cust; |
f4dc4d17 | 10487 | |
43f3e411 | 10488 | if (cust != NULL) |
f4dc4d17 DE |
10489 | { |
10490 | /* Set symtab language to language from DW_AT_language. If the | |
10491 | compilation is from a C file generated by language preprocessors, | |
10492 | do not set the language if it was already deduced by | |
10493 | start_subfile. */ | |
43f3e411 DE |
10494 | if (!(cu->language == language_c |
10495 | && COMPUNIT_FILETABS (cust)->language != language_c)) | |
10496 | COMPUNIT_FILETABS (cust)->language = cu->language; | |
f4dc4d17 DE |
10497 | } |
10498 | } | |
10499 | else | |
10500 | { | |
804d2729 | 10501 | cu->builder->augment_type_symtab (); |
43f3e411 | 10502 | cust = sig_type->type_unit_group->compunit_symtab; |
f4dc4d17 DE |
10503 | } |
10504 | ||
10505 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 10506 | per_cu->v.quick->compunit_symtab = cust; |
f4dc4d17 DE |
10507 | else |
10508 | { | |
10509 | struct partial_symtab *pst = per_cu->v.psymtab; | |
43f3e411 | 10510 | pst->compunit_symtab = cust; |
f4dc4d17 | 10511 | pst->readin = 1; |
45cfd468 | 10512 | } |
804d2729 TT |
10513 | |
10514 | /* Not needed any more. */ | |
10515 | cu->builder.reset (); | |
c906108c SS |
10516 | } |
10517 | ||
95554aad TT |
10518 | /* Process an imported unit DIE. */ |
10519 | ||
10520 | static void | |
10521 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
10522 | { | |
10523 | struct attribute *attr; | |
10524 | ||
f4dc4d17 DE |
10525 | /* For now we don't handle imported units in type units. */ |
10526 | if (cu->per_cu->is_debug_types) | |
10527 | { | |
10528 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
10529 | " supported in type units [in module %s]"), | |
518817b3 | 10530 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
f4dc4d17 DE |
10531 | } |
10532 | ||
95554aad TT |
10533 | attr = dwarf2_attr (die, DW_AT_import, cu); |
10534 | if (attr != NULL) | |
10535 | { | |
9c541725 PA |
10536 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
10537 | bool is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); | |
10538 | dwarf2_per_cu_data *per_cu | |
e3b94546 | 10539 | = dwarf2_find_containing_comp_unit (sect_off, is_dwz, |
518817b3 | 10540 | cu->per_cu->dwarf2_per_objfile); |
95554aad | 10541 | |
69d751e3 | 10542 | /* If necessary, add it to the queue and load its DIEs. */ |
95554aad | 10543 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
58f0c718 | 10544 | load_full_comp_unit (per_cu, false, cu->language); |
95554aad | 10545 | |
796a7ff8 | 10546 | VEC_safe_push (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, |
95554aad TT |
10547 | per_cu); |
10548 | } | |
10549 | } | |
10550 | ||
4c8aa72d PA |
10551 | /* RAII object that represents a process_die scope: i.e., |
10552 | starts/finishes processing a DIE. */ | |
10553 | class process_die_scope | |
adde2bff | 10554 | { |
4c8aa72d PA |
10555 | public: |
10556 | process_die_scope (die_info *die, dwarf2_cu *cu) | |
10557 | : m_die (die), m_cu (cu) | |
10558 | { | |
10559 | /* We should only be processing DIEs not already in process. */ | |
10560 | gdb_assert (!m_die->in_process); | |
10561 | m_die->in_process = true; | |
10562 | } | |
8c3cb9fa | 10563 | |
4c8aa72d PA |
10564 | ~process_die_scope () |
10565 | { | |
10566 | m_die->in_process = false; | |
10567 | ||
10568 | /* If we're done processing the DIE for the CU that owns the line | |
10569 | header, we don't need the line header anymore. */ | |
10570 | if (m_cu->line_header_die_owner == m_die) | |
10571 | { | |
10572 | delete m_cu->line_header; | |
10573 | m_cu->line_header = NULL; | |
10574 | m_cu->line_header_die_owner = NULL; | |
10575 | } | |
10576 | } | |
10577 | ||
10578 | private: | |
10579 | die_info *m_die; | |
10580 | dwarf2_cu *m_cu; | |
10581 | }; | |
adde2bff | 10582 | |
c906108c SS |
10583 | /* Process a die and its children. */ |
10584 | ||
10585 | static void | |
e7c27a73 | 10586 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10587 | { |
4c8aa72d | 10588 | process_die_scope scope (die, cu); |
adde2bff | 10589 | |
c906108c SS |
10590 | switch (die->tag) |
10591 | { | |
10592 | case DW_TAG_padding: | |
10593 | break; | |
10594 | case DW_TAG_compile_unit: | |
95554aad | 10595 | case DW_TAG_partial_unit: |
e7c27a73 | 10596 | read_file_scope (die, cu); |
c906108c | 10597 | break; |
348e048f DE |
10598 | case DW_TAG_type_unit: |
10599 | read_type_unit_scope (die, cu); | |
10600 | break; | |
c906108c | 10601 | case DW_TAG_subprogram: |
c906108c | 10602 | case DW_TAG_inlined_subroutine: |
edb3359d | 10603 | read_func_scope (die, cu); |
c906108c SS |
10604 | break; |
10605 | case DW_TAG_lexical_block: | |
14898363 L |
10606 | case DW_TAG_try_block: |
10607 | case DW_TAG_catch_block: | |
e7c27a73 | 10608 | read_lexical_block_scope (die, cu); |
c906108c | 10609 | break; |
216f72a1 | 10610 | case DW_TAG_call_site: |
96408a79 SA |
10611 | case DW_TAG_GNU_call_site: |
10612 | read_call_site_scope (die, cu); | |
10613 | break; | |
c906108c | 10614 | case DW_TAG_class_type: |
680b30c7 | 10615 | case DW_TAG_interface_type: |
c906108c SS |
10616 | case DW_TAG_structure_type: |
10617 | case DW_TAG_union_type: | |
134d01f1 | 10618 | process_structure_scope (die, cu); |
c906108c SS |
10619 | break; |
10620 | case DW_TAG_enumeration_type: | |
134d01f1 | 10621 | process_enumeration_scope (die, cu); |
c906108c | 10622 | break; |
134d01f1 | 10623 | |
f792889a DJ |
10624 | /* These dies have a type, but processing them does not create |
10625 | a symbol or recurse to process the children. Therefore we can | |
10626 | read them on-demand through read_type_die. */ | |
c906108c | 10627 | case DW_TAG_subroutine_type: |
72019c9c | 10628 | case DW_TAG_set_type: |
c906108c | 10629 | case DW_TAG_array_type: |
c906108c | 10630 | case DW_TAG_pointer_type: |
c906108c | 10631 | case DW_TAG_ptr_to_member_type: |
c906108c | 10632 | case DW_TAG_reference_type: |
4297a3f0 | 10633 | case DW_TAG_rvalue_reference_type: |
c906108c | 10634 | case DW_TAG_string_type: |
c906108c | 10635 | break; |
134d01f1 | 10636 | |
c906108c | 10637 | case DW_TAG_base_type: |
a02abb62 | 10638 | case DW_TAG_subrange_type: |
cb249c71 | 10639 | case DW_TAG_typedef: |
134d01f1 DJ |
10640 | /* Add a typedef symbol for the type definition, if it has a |
10641 | DW_AT_name. */ | |
f792889a | 10642 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 10643 | break; |
c906108c | 10644 | case DW_TAG_common_block: |
e7c27a73 | 10645 | read_common_block (die, cu); |
c906108c SS |
10646 | break; |
10647 | case DW_TAG_common_inclusion: | |
10648 | break; | |
d9fa45fe | 10649 | case DW_TAG_namespace: |
4d4ec4e5 | 10650 | cu->processing_has_namespace_info = 1; |
e7c27a73 | 10651 | read_namespace (die, cu); |
d9fa45fe | 10652 | break; |
5d7cb8df | 10653 | case DW_TAG_module: |
4d4ec4e5 | 10654 | cu->processing_has_namespace_info = 1; |
5d7cb8df JK |
10655 | read_module (die, cu); |
10656 | break; | |
d9fa45fe | 10657 | case DW_TAG_imported_declaration: |
74921315 KS |
10658 | cu->processing_has_namespace_info = 1; |
10659 | if (read_namespace_alias (die, cu)) | |
10660 | break; | |
86a73007 TT |
10661 | /* The declaration is not a global namespace alias. */ |
10662 | /* Fall through. */ | |
d9fa45fe | 10663 | case DW_TAG_imported_module: |
4d4ec4e5 | 10664 | cu->processing_has_namespace_info = 1; |
27aa8d6a SW |
10665 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
10666 | || cu->language != language_fortran)) | |
b98664d3 | 10667 | complaint (_("Tag '%s' has unexpected children"), |
27aa8d6a SW |
10668 | dwarf_tag_name (die->tag)); |
10669 | read_import_statement (die, cu); | |
d9fa45fe | 10670 | break; |
95554aad TT |
10671 | |
10672 | case DW_TAG_imported_unit: | |
10673 | process_imported_unit_die (die, cu); | |
10674 | break; | |
10675 | ||
71a3c369 TT |
10676 | case DW_TAG_variable: |
10677 | read_variable (die, cu); | |
10678 | break; | |
10679 | ||
c906108c | 10680 | default: |
e7c27a73 | 10681 | new_symbol (die, NULL, cu); |
c906108c SS |
10682 | break; |
10683 | } | |
10684 | } | |
ca69b9e6 DE |
10685 | \f |
10686 | /* DWARF name computation. */ | |
c906108c | 10687 | |
94af9270 KS |
10688 | /* A helper function for dwarf2_compute_name which determines whether DIE |
10689 | needs to have the name of the scope prepended to the name listed in the | |
10690 | die. */ | |
10691 | ||
10692 | static int | |
10693 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
10694 | { | |
1c809c68 TT |
10695 | struct attribute *attr; |
10696 | ||
94af9270 KS |
10697 | switch (die->tag) |
10698 | { | |
10699 | case DW_TAG_namespace: | |
10700 | case DW_TAG_typedef: | |
10701 | case DW_TAG_class_type: | |
10702 | case DW_TAG_interface_type: | |
10703 | case DW_TAG_structure_type: | |
10704 | case DW_TAG_union_type: | |
10705 | case DW_TAG_enumeration_type: | |
10706 | case DW_TAG_enumerator: | |
10707 | case DW_TAG_subprogram: | |
08a76f8a | 10708 | case DW_TAG_inlined_subroutine: |
94af9270 | 10709 | case DW_TAG_member: |
74921315 | 10710 | case DW_TAG_imported_declaration: |
94af9270 KS |
10711 | return 1; |
10712 | ||
10713 | case DW_TAG_variable: | |
c2b0a229 | 10714 | case DW_TAG_constant: |
94af9270 KS |
10715 | /* We only need to prefix "globally" visible variables. These include |
10716 | any variable marked with DW_AT_external or any variable that | |
10717 | lives in a namespace. [Variables in anonymous namespaces | |
10718 | require prefixing, but they are not DW_AT_external.] */ | |
10719 | ||
10720 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
10721 | { | |
10722 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 10723 | |
94af9270 KS |
10724 | return die_needs_namespace (die_specification (die, &spec_cu), |
10725 | spec_cu); | |
10726 | } | |
10727 | ||
1c809c68 | 10728 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
10729 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
10730 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
10731 | return 0; |
10732 | /* A variable in a lexical block of some kind does not need a | |
10733 | namespace, even though in C++ such variables may be external | |
10734 | and have a mangled name. */ | |
10735 | if (die->parent->tag == DW_TAG_lexical_block | |
10736 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
10737 | || die->parent->tag == DW_TAG_catch_block |
10738 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
10739 | return 0; |
10740 | return 1; | |
94af9270 KS |
10741 | |
10742 | default: | |
10743 | return 0; | |
10744 | } | |
10745 | } | |
10746 | ||
73b9be8b KS |
10747 | /* Return the DIE's linkage name attribute, either DW_AT_linkage_name |
10748 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10749 | defined for the given DIE. */ | |
10750 | ||
10751 | static struct attribute * | |
10752 | dw2_linkage_name_attr (struct die_info *die, struct dwarf2_cu *cu) | |
10753 | { | |
10754 | struct attribute *attr; | |
10755 | ||
10756 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
10757 | if (attr == NULL) | |
10758 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10759 | ||
10760 | return attr; | |
10761 | } | |
10762 | ||
10763 | /* Return the DIE's linkage name as a string, either DW_AT_linkage_name | |
10764 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10765 | defined for the given DIE. */ | |
10766 | ||
10767 | static const char * | |
10768 | dw2_linkage_name (struct die_info *die, struct dwarf2_cu *cu) | |
10769 | { | |
10770 | const char *linkage_name; | |
10771 | ||
10772 | linkage_name = dwarf2_string_attr (die, DW_AT_linkage_name, cu); | |
10773 | if (linkage_name == NULL) | |
10774 | linkage_name = dwarf2_string_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10775 | ||
10776 | return linkage_name; | |
10777 | } | |
10778 | ||
94af9270 | 10779 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 | 10780 | compute the physname for the object, which include a method's: |
9c37b5ae | 10781 | - formal parameters (C++), |
a766d390 | 10782 | - receiver type (Go), |
a766d390 DE |
10783 | |
10784 | The term "physname" is a bit confusing. | |
10785 | For C++, for example, it is the demangled name. | |
10786 | For Go, for example, it's the mangled name. | |
94af9270 | 10787 | |
af6b7be1 JB |
10788 | For Ada, return the DIE's linkage name rather than the fully qualified |
10789 | name. PHYSNAME is ignored.. | |
10790 | ||
94af9270 KS |
10791 | The result is allocated on the objfile_obstack and canonicalized. */ |
10792 | ||
10793 | static const char * | |
15d034d0 TT |
10794 | dwarf2_compute_name (const char *name, |
10795 | struct die_info *die, struct dwarf2_cu *cu, | |
94af9270 KS |
10796 | int physname) |
10797 | { | |
518817b3 | 10798 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
bb5ed363 | 10799 | |
94af9270 KS |
10800 | if (name == NULL) |
10801 | name = dwarf2_name (die, cu); | |
10802 | ||
2ee7123e DE |
10803 | /* For Fortran GDB prefers DW_AT_*linkage_name for the physname if present |
10804 | but otherwise compute it by typename_concat inside GDB. | |
10805 | FIXME: Actually this is not really true, or at least not always true. | |
10806 | It's all very confusing. SYMBOL_SET_NAMES doesn't try to demangle | |
5e2db402 | 10807 | Fortran names because there is no mangling standard. So new_symbol |
2ee7123e DE |
10808 | will set the demangled name to the result of dwarf2_full_name, and it is |
10809 | the demangled name that GDB uses if it exists. */ | |
f55ee35c JK |
10810 | if (cu->language == language_ada |
10811 | || (cu->language == language_fortran && physname)) | |
10812 | { | |
10813 | /* For Ada unit, we prefer the linkage name over the name, as | |
10814 | the former contains the exported name, which the user expects | |
10815 | to be able to reference. Ideally, we want the user to be able | |
10816 | to reference this entity using either natural or linkage name, | |
10817 | but we haven't started looking at this enhancement yet. */ | |
73b9be8b | 10818 | const char *linkage_name = dw2_linkage_name (die, cu); |
f55ee35c | 10819 | |
2ee7123e DE |
10820 | if (linkage_name != NULL) |
10821 | return linkage_name; | |
f55ee35c JK |
10822 | } |
10823 | ||
94af9270 KS |
10824 | /* These are the only languages we know how to qualify names in. */ |
10825 | if (name != NULL | |
9c37b5ae | 10826 | && (cu->language == language_cplus |
c44af4eb TT |
10827 | || cu->language == language_fortran || cu->language == language_d |
10828 | || cu->language == language_rust)) | |
94af9270 KS |
10829 | { |
10830 | if (die_needs_namespace (die, cu)) | |
10831 | { | |
0d5cff50 | 10832 | const char *prefix; |
34a68019 | 10833 | const char *canonical_name = NULL; |
94af9270 | 10834 | |
d7e74731 PA |
10835 | string_file buf; |
10836 | ||
94af9270 | 10837 | prefix = determine_prefix (die, cu); |
94af9270 KS |
10838 | if (*prefix != '\0') |
10839 | { | |
f55ee35c JK |
10840 | char *prefixed_name = typename_concat (NULL, prefix, name, |
10841 | physname, cu); | |
9a619af0 | 10842 | |
d7e74731 | 10843 | buf.puts (prefixed_name); |
94af9270 KS |
10844 | xfree (prefixed_name); |
10845 | } | |
10846 | else | |
d7e74731 | 10847 | buf.puts (name); |
94af9270 | 10848 | |
98bfdba5 PA |
10849 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
10850 | as children with DW_TAG_template_type_param or | |
10851 | DW_TAG_value_type_param. If the latter, add them to the name | |
10852 | here. If the name already has template parameters, then | |
10853 | skip this step; some versions of GCC emit both, and | |
10854 | it is more efficient to use the pre-computed name. | |
10855 | ||
10856 | Something to keep in mind about this process: it is very | |
10857 | unlikely, or in some cases downright impossible, to produce | |
10858 | something that will match the mangled name of a function. | |
10859 | If the definition of the function has the same debug info, | |
10860 | we should be able to match up with it anyway. But fallbacks | |
10861 | using the minimal symbol, for instance to find a method | |
10862 | implemented in a stripped copy of libstdc++, will not work. | |
10863 | If we do not have debug info for the definition, we will have to | |
10864 | match them up some other way. | |
10865 | ||
10866 | When we do name matching there is a related problem with function | |
10867 | templates; two instantiated function templates are allowed to | |
10868 | differ only by their return types, which we do not add here. */ | |
10869 | ||
10870 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
10871 | { | |
10872 | struct attribute *attr; | |
10873 | struct die_info *child; | |
10874 | int first = 1; | |
10875 | ||
10876 | die->building_fullname = 1; | |
10877 | ||
10878 | for (child = die->child; child != NULL; child = child->sibling) | |
10879 | { | |
10880 | struct type *type; | |
12df843f | 10881 | LONGEST value; |
d521ce57 | 10882 | const gdb_byte *bytes; |
98bfdba5 PA |
10883 | struct dwarf2_locexpr_baton *baton; |
10884 | struct value *v; | |
10885 | ||
10886 | if (child->tag != DW_TAG_template_type_param | |
10887 | && child->tag != DW_TAG_template_value_param) | |
10888 | continue; | |
10889 | ||
10890 | if (first) | |
10891 | { | |
d7e74731 | 10892 | buf.puts ("<"); |
98bfdba5 PA |
10893 | first = 0; |
10894 | } | |
10895 | else | |
d7e74731 | 10896 | buf.puts (", "); |
98bfdba5 PA |
10897 | |
10898 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
10899 | if (attr == NULL) | |
10900 | { | |
b98664d3 | 10901 | complaint (_("template parameter missing DW_AT_type")); |
d7e74731 | 10902 | buf.puts ("UNKNOWN_TYPE"); |
98bfdba5 PA |
10903 | continue; |
10904 | } | |
10905 | type = die_type (child, cu); | |
10906 | ||
10907 | if (child->tag == DW_TAG_template_type_param) | |
10908 | { | |
c1ec8cea TT |
10909 | c_print_type (type, "", &buf, -1, 0, cu->language, |
10910 | &type_print_raw_options); | |
98bfdba5 PA |
10911 | continue; |
10912 | } | |
10913 | ||
10914 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
10915 | if (attr == NULL) | |
10916 | { | |
b98664d3 | 10917 | complaint (_("template parameter missing " |
3e43a32a | 10918 | "DW_AT_const_value")); |
d7e74731 | 10919 | buf.puts ("UNKNOWN_VALUE"); |
98bfdba5 PA |
10920 | continue; |
10921 | } | |
10922 | ||
10923 | dwarf2_const_value_attr (attr, type, name, | |
10924 | &cu->comp_unit_obstack, cu, | |
10925 | &value, &bytes, &baton); | |
10926 | ||
10927 | if (TYPE_NOSIGN (type)) | |
10928 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
10929 | changed, this can use value_print instead. */ | |
d7e74731 | 10930 | c_printchar (value, type, &buf); |
98bfdba5 PA |
10931 | else |
10932 | { | |
10933 | struct value_print_options opts; | |
10934 | ||
10935 | if (baton != NULL) | |
10936 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
10937 | baton->data, | |
10938 | baton->size, | |
10939 | baton->per_cu); | |
10940 | else if (bytes != NULL) | |
10941 | { | |
10942 | v = allocate_value (type); | |
10943 | memcpy (value_contents_writeable (v), bytes, | |
10944 | TYPE_LENGTH (type)); | |
10945 | } | |
10946 | else | |
10947 | v = value_from_longest (type, value); | |
10948 | ||
3e43a32a MS |
10949 | /* Specify decimal so that we do not depend on |
10950 | the radix. */ | |
98bfdba5 PA |
10951 | get_formatted_print_options (&opts, 'd'); |
10952 | opts.raw = 1; | |
d7e74731 | 10953 | value_print (v, &buf, &opts); |
98bfdba5 | 10954 | release_value (v); |
98bfdba5 PA |
10955 | } |
10956 | } | |
10957 | ||
10958 | die->building_fullname = 0; | |
10959 | ||
10960 | if (!first) | |
10961 | { | |
10962 | /* Close the argument list, with a space if necessary | |
10963 | (nested templates). */ | |
d7e74731 PA |
10964 | if (!buf.empty () && buf.string ().back () == '>') |
10965 | buf.puts (" >"); | |
98bfdba5 | 10966 | else |
d7e74731 | 10967 | buf.puts (">"); |
98bfdba5 PA |
10968 | } |
10969 | } | |
10970 | ||
9c37b5ae | 10971 | /* For C++ methods, append formal parameter type |
94af9270 | 10972 | information, if PHYSNAME. */ |
6e70227d | 10973 | |
94af9270 | 10974 | if (physname && die->tag == DW_TAG_subprogram |
9c37b5ae | 10975 | && cu->language == language_cplus) |
94af9270 KS |
10976 | { |
10977 | struct type *type = read_type_die (die, cu); | |
10978 | ||
d7e74731 | 10979 | c_type_print_args (type, &buf, 1, cu->language, |
79d43c61 | 10980 | &type_print_raw_options); |
94af9270 | 10981 | |
9c37b5ae | 10982 | if (cu->language == language_cplus) |
94af9270 | 10983 | { |
60430eff DJ |
10984 | /* Assume that an artificial first parameter is |
10985 | "this", but do not crash if it is not. RealView | |
10986 | marks unnamed (and thus unused) parameters as | |
10987 | artificial; there is no way to differentiate | |
10988 | the two cases. */ | |
94af9270 KS |
10989 | if (TYPE_NFIELDS (type) > 0 |
10990 | && TYPE_FIELD_ARTIFICIAL (type, 0) | |
60430eff | 10991 | && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_PTR |
3e43a32a MS |
10992 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, |
10993 | 0)))) | |
d7e74731 | 10994 | buf.puts (" const"); |
94af9270 KS |
10995 | } |
10996 | } | |
10997 | ||
d7e74731 | 10998 | const std::string &intermediate_name = buf.string (); |
94af9270 KS |
10999 | |
11000 | if (cu->language == language_cplus) | |
34a68019 | 11001 | canonical_name |
322a8516 | 11002 | = dwarf2_canonicalize_name (intermediate_name.c_str (), cu, |
34a68019 TT |
11003 | &objfile->per_bfd->storage_obstack); |
11004 | ||
11005 | /* If we only computed INTERMEDIATE_NAME, or if | |
11006 | INTERMEDIATE_NAME is already canonical, then we need to | |
11007 | copy it to the appropriate obstack. */ | |
322a8516 | 11008 | if (canonical_name == NULL || canonical_name == intermediate_name.c_str ()) |
224c3ddb SM |
11009 | name = ((const char *) |
11010 | obstack_copy0 (&objfile->per_bfd->storage_obstack, | |
322a8516 PA |
11011 | intermediate_name.c_str (), |
11012 | intermediate_name.length ())); | |
34a68019 TT |
11013 | else |
11014 | name = canonical_name; | |
94af9270 KS |
11015 | } |
11016 | } | |
11017 | ||
11018 | return name; | |
11019 | } | |
11020 | ||
0114d602 DJ |
11021 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
11022 | If scope qualifiers are appropriate they will be added. The result | |
34a68019 | 11023 | will be allocated on the storage_obstack, or NULL if the DIE does |
94af9270 KS |
11024 | not have a name. NAME may either be from a previous call to |
11025 | dwarf2_name or NULL. | |
11026 | ||
9c37b5ae | 11027 | The output string will be canonicalized (if C++). */ |
0114d602 DJ |
11028 | |
11029 | static const char * | |
15d034d0 | 11030 | dwarf2_full_name (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 11031 | { |
94af9270 KS |
11032 | return dwarf2_compute_name (name, die, cu, 0); |
11033 | } | |
0114d602 | 11034 | |
94af9270 KS |
11035 | /* Construct a physname for the given DIE in CU. NAME may either be |
11036 | from a previous call to dwarf2_name or NULL. The result will be | |
11037 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
11038 | name. | |
0114d602 | 11039 | |
9c37b5ae | 11040 | The output string will be canonicalized (if C++). */ |
0114d602 | 11041 | |
94af9270 | 11042 | static const char * |
15d034d0 | 11043 | dwarf2_physname (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
94af9270 | 11044 | { |
518817b3 | 11045 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
900e11f9 | 11046 | const char *retval, *mangled = NULL, *canon = NULL; |
900e11f9 JK |
11047 | int need_copy = 1; |
11048 | ||
11049 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
11050 | on its own. */ | |
11051 | if (!die_needs_namespace (die, cu)) | |
11052 | return dwarf2_compute_name (name, die, cu, 1); | |
11053 | ||
73b9be8b | 11054 | mangled = dw2_linkage_name (die, cu); |
900e11f9 | 11055 | |
e98c9e7c TT |
11056 | /* rustc emits invalid values for DW_AT_linkage_name. Ignore these. |
11057 | See https://github.com/rust-lang/rust/issues/32925. */ | |
11058 | if (cu->language == language_rust && mangled != NULL | |
11059 | && strchr (mangled, '{') != NULL) | |
11060 | mangled = NULL; | |
11061 | ||
900e11f9 JK |
11062 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB |
11063 | has computed. */ | |
791afaa2 | 11064 | gdb::unique_xmalloc_ptr<char> demangled; |
7d45c7c3 | 11065 | if (mangled != NULL) |
900e11f9 | 11066 | { |
900e11f9 | 11067 | |
59cc4834 JB |
11068 | if (language_def (cu->language)->la_store_sym_names_in_linkage_form_p) |
11069 | { | |
11070 | /* Do nothing (do not demangle the symbol name). */ | |
11071 | } | |
11072 | else if (cu->language == language_go) | |
a766d390 | 11073 | { |
5e2db402 TT |
11074 | /* This is a lie, but we already lie to the caller new_symbol. |
11075 | new_symbol assumes we return the mangled name. | |
a766d390 | 11076 | This just undoes that lie until things are cleaned up. */ |
a766d390 DE |
11077 | } |
11078 | else | |
11079 | { | |
0eb876f5 JB |
11080 | /* Use DMGL_RET_DROP for C++ template functions to suppress |
11081 | their return type. It is easier for GDB users to search | |
11082 | for such functions as `name(params)' than `long name(params)'. | |
11083 | In such case the minimal symbol names do not match the full | |
11084 | symbol names but for template functions there is never a need | |
11085 | to look up their definition from their declaration so | |
11086 | the only disadvantage remains the minimal symbol variant | |
11087 | `long name(params)' does not have the proper inferior type. */ | |
791afaa2 TT |
11088 | demangled.reset (gdb_demangle (mangled, |
11089 | (DMGL_PARAMS | DMGL_ANSI | |
11090 | | DMGL_RET_DROP))); | |
a766d390 | 11091 | } |
900e11f9 | 11092 | if (demangled) |
791afaa2 | 11093 | canon = demangled.get (); |
900e11f9 JK |
11094 | else |
11095 | { | |
11096 | canon = mangled; | |
11097 | need_copy = 0; | |
11098 | } | |
11099 | } | |
11100 | ||
11101 | if (canon == NULL || check_physname) | |
11102 | { | |
11103 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
11104 | ||
11105 | if (canon != NULL && strcmp (physname, canon) != 0) | |
11106 | { | |
11107 | /* It may not mean a bug in GDB. The compiler could also | |
11108 | compute DW_AT_linkage_name incorrectly. But in such case | |
11109 | GDB would need to be bug-to-bug compatible. */ | |
11110 | ||
b98664d3 | 11111 | complaint (_("Computed physname <%s> does not match demangled <%s> " |
9d8780f0 SM |
11112 | "(from linkage <%s>) - DIE at %s [in module %s]"), |
11113 | physname, canon, mangled, sect_offset_str (die->sect_off), | |
4262abfb | 11114 | objfile_name (objfile)); |
900e11f9 JK |
11115 | |
11116 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
11117 | is available here - over computed PHYSNAME. It is safer | |
11118 | against both buggy GDB and buggy compilers. */ | |
11119 | ||
11120 | retval = canon; | |
11121 | } | |
11122 | else | |
11123 | { | |
11124 | retval = physname; | |
11125 | need_copy = 0; | |
11126 | } | |
11127 | } | |
11128 | else | |
11129 | retval = canon; | |
11130 | ||
11131 | if (need_copy) | |
224c3ddb SM |
11132 | retval = ((const char *) |
11133 | obstack_copy0 (&objfile->per_bfd->storage_obstack, | |
11134 | retval, strlen (retval))); | |
900e11f9 | 11135 | |
900e11f9 | 11136 | return retval; |
0114d602 DJ |
11137 | } |
11138 | ||
74921315 KS |
11139 | /* Inspect DIE in CU for a namespace alias. If one exists, record |
11140 | a new symbol for it. | |
11141 | ||
11142 | Returns 1 if a namespace alias was recorded, 0 otherwise. */ | |
11143 | ||
11144 | static int | |
11145 | read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu) | |
11146 | { | |
11147 | struct attribute *attr; | |
11148 | ||
11149 | /* If the die does not have a name, this is not a namespace | |
11150 | alias. */ | |
11151 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
11152 | if (attr != NULL) | |
11153 | { | |
11154 | int num; | |
11155 | struct die_info *d = die; | |
11156 | struct dwarf2_cu *imported_cu = cu; | |
11157 | ||
11158 | /* If the compiler has nested DW_AT_imported_declaration DIEs, | |
11159 | keep inspecting DIEs until we hit the underlying import. */ | |
11160 | #define MAX_NESTED_IMPORTED_DECLARATIONS 100 | |
11161 | for (num = 0; num < MAX_NESTED_IMPORTED_DECLARATIONS; ++num) | |
11162 | { | |
11163 | attr = dwarf2_attr (d, DW_AT_import, cu); | |
11164 | if (attr == NULL) | |
11165 | break; | |
11166 | ||
11167 | d = follow_die_ref (d, attr, &imported_cu); | |
11168 | if (d->tag != DW_TAG_imported_declaration) | |
11169 | break; | |
11170 | } | |
11171 | ||
11172 | if (num == MAX_NESTED_IMPORTED_DECLARATIONS) | |
11173 | { | |
b98664d3 | 11174 | complaint (_("DIE at %s has too many recursively imported " |
9d8780f0 | 11175 | "declarations"), sect_offset_str (d->sect_off)); |
74921315 KS |
11176 | return 0; |
11177 | } | |
11178 | ||
11179 | if (attr != NULL) | |
11180 | { | |
11181 | struct type *type; | |
9c541725 | 11182 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
74921315 | 11183 | |
9c541725 | 11184 | type = get_die_type_at_offset (sect_off, cu->per_cu); |
74921315 KS |
11185 | if (type != NULL && TYPE_CODE (type) == TYPE_CODE_NAMESPACE) |
11186 | { | |
11187 | /* This declaration is a global namespace alias. Add | |
11188 | a symbol for it whose type is the aliased namespace. */ | |
11189 | new_symbol (die, type, cu); | |
11190 | return 1; | |
11191 | } | |
11192 | } | |
11193 | } | |
11194 | ||
11195 | return 0; | |
11196 | } | |
11197 | ||
22cee43f | 11198 | /* Return the using directives repository (global or local?) to use in the |
804d2729 | 11199 | current context for CU. |
22cee43f PMR |
11200 | |
11201 | For Ada, imported declarations can materialize renamings, which *may* be | |
11202 | global. However it is impossible (for now?) in DWARF to distinguish | |
11203 | "external" imported declarations and "static" ones. As all imported | |
11204 | declarations seem to be static in all other languages, make them all CU-wide | |
11205 | global only in Ada. */ | |
11206 | ||
11207 | static struct using_direct ** | |
804d2729 | 11208 | using_directives (struct dwarf2_cu *cu) |
22cee43f | 11209 | { |
804d2729 TT |
11210 | if (cu->language == language_ada && cu->builder->outermost_context_p ()) |
11211 | return cu->builder->get_global_using_directives (); | |
22cee43f | 11212 | else |
804d2729 | 11213 | return cu->builder->get_local_using_directives (); |
22cee43f PMR |
11214 | } |
11215 | ||
27aa8d6a SW |
11216 | /* Read the import statement specified by the given die and record it. */ |
11217 | ||
11218 | static void | |
11219 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
11220 | { | |
518817b3 | 11221 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
27aa8d6a | 11222 | struct attribute *import_attr; |
32019081 | 11223 | struct die_info *imported_die, *child_die; |
de4affc9 | 11224 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 11225 | const char *imported_name; |
794684b6 | 11226 | const char *imported_name_prefix; |
13387711 SW |
11227 | const char *canonical_name; |
11228 | const char *import_alias; | |
11229 | const char *imported_declaration = NULL; | |
794684b6 | 11230 | const char *import_prefix; |
eb1e02fd | 11231 | std::vector<const char *> excludes; |
13387711 | 11232 | |
27aa8d6a SW |
11233 | import_attr = dwarf2_attr (die, DW_AT_import, cu); |
11234 | if (import_attr == NULL) | |
11235 | { | |
b98664d3 | 11236 | complaint (_("Tag '%s' has no DW_AT_import"), |
27aa8d6a SW |
11237 | dwarf_tag_name (die->tag)); |
11238 | return; | |
11239 | } | |
11240 | ||
de4affc9 CC |
11241 | imported_cu = cu; |
11242 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
11243 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
11244 | if (imported_name == NULL) |
11245 | { | |
11246 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
11247 | ||
11248 | The import in the following code: | |
11249 | namespace A | |
11250 | { | |
11251 | typedef int B; | |
11252 | } | |
11253 | ||
11254 | int main () | |
11255 | { | |
11256 | using A::B; | |
11257 | B b; | |
11258 | return b; | |
11259 | } | |
11260 | ||
11261 | ... | |
11262 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
11263 | <52> DW_AT_decl_file : 1 | |
11264 | <53> DW_AT_decl_line : 6 | |
11265 | <54> DW_AT_import : <0x75> | |
11266 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
11267 | <59> DW_AT_name : B | |
11268 | <5b> DW_AT_decl_file : 1 | |
11269 | <5c> DW_AT_decl_line : 2 | |
11270 | <5d> DW_AT_type : <0x6e> | |
11271 | ... | |
11272 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
11273 | <76> DW_AT_byte_size : 4 | |
11274 | <77> DW_AT_encoding : 5 (signed) | |
11275 | ||
11276 | imports the wrong die ( 0x75 instead of 0x58 ). | |
11277 | This case will be ignored until the gcc bug is fixed. */ | |
11278 | return; | |
11279 | } | |
11280 | ||
82856980 SW |
11281 | /* Figure out the local name after import. */ |
11282 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 11283 | |
794684b6 SW |
11284 | /* Figure out where the statement is being imported to. */ |
11285 | import_prefix = determine_prefix (die, cu); | |
11286 | ||
11287 | /* Figure out what the scope of the imported die is and prepend it | |
11288 | to the name of the imported die. */ | |
de4affc9 | 11289 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 11290 | |
f55ee35c JK |
11291 | if (imported_die->tag != DW_TAG_namespace |
11292 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 11293 | { |
13387711 SW |
11294 | imported_declaration = imported_name; |
11295 | canonical_name = imported_name_prefix; | |
794684b6 | 11296 | } |
13387711 | 11297 | else if (strlen (imported_name_prefix) > 0) |
12aaed36 | 11298 | canonical_name = obconcat (&objfile->objfile_obstack, |
45280282 IB |
11299 | imported_name_prefix, |
11300 | (cu->language == language_d ? "." : "::"), | |
11301 | imported_name, (char *) NULL); | |
13387711 SW |
11302 | else |
11303 | canonical_name = imported_name; | |
794684b6 | 11304 | |
32019081 JK |
11305 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) |
11306 | for (child_die = die->child; child_die && child_die->tag; | |
11307 | child_die = sibling_die (child_die)) | |
11308 | { | |
11309 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
11310 | represented by an imported module entry with an import attribute | |
11311 | referring to the module and owned entries corresponding to those | |
11312 | entities that are renamed as part of being imported. */ | |
11313 | ||
11314 | if (child_die->tag != DW_TAG_imported_declaration) | |
11315 | { | |
b98664d3 | 11316 | complaint (_("child DW_TAG_imported_declaration expected " |
9d8780f0 SM |
11317 | "- DIE at %s [in module %s]"), |
11318 | sect_offset_str (child_die->sect_off), | |
11319 | objfile_name (objfile)); | |
32019081 JK |
11320 | continue; |
11321 | } | |
11322 | ||
11323 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
11324 | if (import_attr == NULL) | |
11325 | { | |
b98664d3 | 11326 | complaint (_("Tag '%s' has no DW_AT_import"), |
32019081 JK |
11327 | dwarf_tag_name (child_die->tag)); |
11328 | continue; | |
11329 | } | |
11330 | ||
11331 | imported_cu = cu; | |
11332 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
11333 | &imported_cu); | |
11334 | imported_name = dwarf2_name (imported_die, imported_cu); | |
11335 | if (imported_name == NULL) | |
11336 | { | |
b98664d3 | 11337 | complaint (_("child DW_TAG_imported_declaration has unknown " |
9d8780f0 SM |
11338 | "imported name - DIE at %s [in module %s]"), |
11339 | sect_offset_str (child_die->sect_off), | |
11340 | objfile_name (objfile)); | |
32019081 JK |
11341 | continue; |
11342 | } | |
11343 | ||
eb1e02fd | 11344 | excludes.push_back (imported_name); |
32019081 JK |
11345 | |
11346 | process_die (child_die, cu); | |
11347 | } | |
11348 | ||
804d2729 | 11349 | add_using_directive (using_directives (cu), |
22cee43f PMR |
11350 | import_prefix, |
11351 | canonical_name, | |
11352 | import_alias, | |
11353 | imported_declaration, | |
11354 | excludes, | |
11355 | 0, | |
11356 | &objfile->objfile_obstack); | |
27aa8d6a SW |
11357 | } |
11358 | ||
5230b05a WT |
11359 | /* ICC<14 does not output the required DW_AT_declaration on incomplete |
11360 | types, but gives them a size of zero. Starting with version 14, | |
11361 | ICC is compatible with GCC. */ | |
11362 | ||
11363 | static int | |
11364 | producer_is_icc_lt_14 (struct dwarf2_cu *cu) | |
11365 | { | |
11366 | if (!cu->checked_producer) | |
11367 | check_producer (cu); | |
11368 | ||
11369 | return cu->producer_is_icc_lt_14; | |
11370 | } | |
11371 | ||
1b80a9fa JK |
11372 | /* Check for possibly missing DW_AT_comp_dir with relative .debug_line |
11373 | directory paths. GCC SVN r127613 (new option -fdebug-prefix-map) fixed | |
11374 | this, it was first present in GCC release 4.3.0. */ | |
11375 | ||
11376 | static int | |
11377 | producer_is_gcc_lt_4_3 (struct dwarf2_cu *cu) | |
11378 | { | |
11379 | if (!cu->checked_producer) | |
11380 | check_producer (cu); | |
11381 | ||
11382 | return cu->producer_is_gcc_lt_4_3; | |
11383 | } | |
11384 | ||
d721ba37 PA |
11385 | static file_and_directory |
11386 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu) | |
9291a0cd | 11387 | { |
d721ba37 PA |
11388 | file_and_directory res; |
11389 | ||
9291a0cd TT |
11390 | /* Find the filename. Do not use dwarf2_name here, since the filename |
11391 | is not a source language identifier. */ | |
d721ba37 PA |
11392 | res.name = dwarf2_string_attr (die, DW_AT_name, cu); |
11393 | res.comp_dir = dwarf2_string_attr (die, DW_AT_comp_dir, cu); | |
9291a0cd | 11394 | |
d721ba37 PA |
11395 | if (res.comp_dir == NULL |
11396 | && producer_is_gcc_lt_4_3 (cu) && res.name != NULL | |
11397 | && IS_ABSOLUTE_PATH (res.name)) | |
9291a0cd | 11398 | { |
d721ba37 PA |
11399 | res.comp_dir_storage = ldirname (res.name); |
11400 | if (!res.comp_dir_storage.empty ()) | |
11401 | res.comp_dir = res.comp_dir_storage.c_str (); | |
9291a0cd | 11402 | } |
d721ba37 | 11403 | if (res.comp_dir != NULL) |
9291a0cd TT |
11404 | { |
11405 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
11406 | directory, get rid of it. */ | |
d721ba37 | 11407 | const char *cp = strchr (res.comp_dir, ':'); |
9291a0cd | 11408 | |
d721ba37 PA |
11409 | if (cp && cp != res.comp_dir && cp[-1] == '.' && cp[1] == '/') |
11410 | res.comp_dir = cp + 1; | |
9291a0cd TT |
11411 | } |
11412 | ||
d721ba37 PA |
11413 | if (res.name == NULL) |
11414 | res.name = "<unknown>"; | |
11415 | ||
11416 | return res; | |
9291a0cd TT |
11417 | } |
11418 | ||
f4dc4d17 DE |
11419 | /* Handle DW_AT_stmt_list for a compilation unit. |
11420 | DIE is the DW_TAG_compile_unit die for CU. | |
c3b7b696 YQ |
11421 | COMP_DIR is the compilation directory. LOWPC is passed to |
11422 | dwarf_decode_lines. See dwarf_decode_lines comments about it. */ | |
2ab95328 TT |
11423 | |
11424 | static void | |
11425 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
c3b7b696 | 11426 | const char *comp_dir, CORE_ADDR lowpc) /* ARI: editCase function */ |
2ab95328 | 11427 | { |
518817b3 SM |
11428 | struct dwarf2_per_objfile *dwarf2_per_objfile |
11429 | = cu->per_cu->dwarf2_per_objfile; | |
527f3840 | 11430 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
2ab95328 | 11431 | struct attribute *attr; |
527f3840 JK |
11432 | struct line_header line_header_local; |
11433 | hashval_t line_header_local_hash; | |
527f3840 JK |
11434 | void **slot; |
11435 | int decode_mapping; | |
2ab95328 | 11436 | |
f4dc4d17 DE |
11437 | gdb_assert (! cu->per_cu->is_debug_types); |
11438 | ||
2ab95328 | 11439 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
527f3840 JK |
11440 | if (attr == NULL) |
11441 | return; | |
11442 | ||
9c541725 | 11443 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
527f3840 JK |
11444 | |
11445 | /* The line header hash table is only created if needed (it exists to | |
11446 | prevent redundant reading of the line table for partial_units). | |
11447 | If we're given a partial_unit, we'll need it. If we're given a | |
11448 | compile_unit, then use the line header hash table if it's already | |
11449 | created, but don't create one just yet. */ | |
11450 | ||
11451 | if (dwarf2_per_objfile->line_header_hash == NULL | |
11452 | && die->tag == DW_TAG_partial_unit) | |
2ab95328 | 11453 | { |
527f3840 JK |
11454 | dwarf2_per_objfile->line_header_hash |
11455 | = htab_create_alloc_ex (127, line_header_hash_voidp, | |
11456 | line_header_eq_voidp, | |
11457 | free_line_header_voidp, | |
11458 | &objfile->objfile_obstack, | |
11459 | hashtab_obstack_allocate, | |
11460 | dummy_obstack_deallocate); | |
11461 | } | |
2ab95328 | 11462 | |
9c541725 | 11463 | line_header_local.sect_off = line_offset; |
527f3840 JK |
11464 | line_header_local.offset_in_dwz = cu->per_cu->is_dwz; |
11465 | line_header_local_hash = line_header_hash (&line_header_local); | |
11466 | if (dwarf2_per_objfile->line_header_hash != NULL) | |
11467 | { | |
11468 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash, | |
11469 | &line_header_local, | |
11470 | line_header_local_hash, NO_INSERT); | |
11471 | ||
11472 | /* For DW_TAG_compile_unit we need info like symtab::linetable which | |
11473 | is not present in *SLOT (since if there is something in *SLOT then | |
11474 | it will be for a partial_unit). */ | |
11475 | if (die->tag == DW_TAG_partial_unit && slot != NULL) | |
dee91e82 | 11476 | { |
527f3840 | 11477 | gdb_assert (*slot != NULL); |
9a3c8263 | 11478 | cu->line_header = (struct line_header *) *slot; |
527f3840 | 11479 | return; |
dee91e82 | 11480 | } |
2ab95328 | 11481 | } |
527f3840 JK |
11482 | |
11483 | /* dwarf_decode_line_header does not yet provide sufficient information. | |
11484 | We always have to call also dwarf_decode_lines for it. */ | |
fff8551c PA |
11485 | line_header_up lh = dwarf_decode_line_header (line_offset, cu); |
11486 | if (lh == NULL) | |
527f3840 | 11487 | return; |
4c8aa72d PA |
11488 | |
11489 | cu->line_header = lh.release (); | |
11490 | cu->line_header_die_owner = die; | |
527f3840 JK |
11491 | |
11492 | if (dwarf2_per_objfile->line_header_hash == NULL) | |
11493 | slot = NULL; | |
11494 | else | |
11495 | { | |
11496 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash, | |
11497 | &line_header_local, | |
11498 | line_header_local_hash, INSERT); | |
11499 | gdb_assert (slot != NULL); | |
11500 | } | |
11501 | if (slot != NULL && *slot == NULL) | |
11502 | { | |
11503 | /* This newly decoded line number information unit will be owned | |
11504 | by line_header_hash hash table. */ | |
11505 | *slot = cu->line_header; | |
4c8aa72d | 11506 | cu->line_header_die_owner = NULL; |
527f3840 JK |
11507 | } |
11508 | else | |
11509 | { | |
11510 | /* We cannot free any current entry in (*slot) as that struct line_header | |
11511 | may be already used by multiple CUs. Create only temporary decoded | |
11512 | line_header for this CU - it may happen at most once for each line | |
11513 | number information unit. And if we're not using line_header_hash | |
11514 | then this is what we want as well. */ | |
11515 | gdb_assert (die->tag != DW_TAG_partial_unit); | |
527f3840 JK |
11516 | } |
11517 | decode_mapping = (die->tag != DW_TAG_partial_unit); | |
11518 | dwarf_decode_lines (cu->line_header, comp_dir, cu, NULL, lowpc, | |
11519 | decode_mapping); | |
fff8551c | 11520 | |
2ab95328 TT |
11521 | } |
11522 | ||
95554aad | 11523 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 11524 | |
c906108c | 11525 | static void |
e7c27a73 | 11526 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11527 | { |
518817b3 SM |
11528 | struct dwarf2_per_objfile *dwarf2_per_objfile |
11529 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 11530 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 11531 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
2acceee2 | 11532 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
11533 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
11534 | struct attribute *attr; | |
c906108c | 11535 | struct die_info *child_die; |
e142c38c | 11536 | CORE_ADDR baseaddr; |
6e70227d | 11537 | |
380618d6 | 11538 | prepare_one_comp_unit (cu, die, cu->language); |
e142c38c | 11539 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c | 11540 | |
fae299cd | 11541 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
11542 | |
11543 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
11544 | from finish_block. */ | |
2acceee2 | 11545 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c | 11546 | lowpc = highpc; |
3e29f34a | 11547 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
c906108c | 11548 | |
d721ba37 | 11549 | file_and_directory fnd = find_file_and_directory (die, cu); |
e1024ff1 | 11550 | |
f4b8a18d KW |
11551 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
11552 | standardised yet. As a workaround for the language detection we fall | |
11553 | back to the DW_AT_producer string. */ | |
11554 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
11555 | cu->language = language_opencl; | |
11556 | ||
3019eac3 DE |
11557 | /* Similar hack for Go. */ |
11558 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
11559 | set_cu_language (DW_LANG_Go, cu); | |
11560 | ||
d721ba37 | 11561 | dwarf2_start_symtab (cu, fnd.name, fnd.comp_dir, lowpc); |
3019eac3 DE |
11562 | |
11563 | /* Decode line number information if present. We do this before | |
11564 | processing child DIEs, so that the line header table is available | |
11565 | for DW_AT_decl_file. */ | |
d721ba37 | 11566 | handle_DW_AT_stmt_list (die, cu, fnd.comp_dir, lowpc); |
3019eac3 DE |
11567 | |
11568 | /* Process all dies in compilation unit. */ | |
11569 | if (die->child != NULL) | |
11570 | { | |
11571 | child_die = die->child; | |
11572 | while (child_die && child_die->tag) | |
11573 | { | |
11574 | process_die (child_die, cu); | |
11575 | child_die = sibling_die (child_die); | |
11576 | } | |
11577 | } | |
11578 | ||
11579 | /* Decode macro information, if present. Dwarf 2 macro information | |
11580 | refers to information in the line number info statement program | |
11581 | header, so we can only read it if we've read the header | |
11582 | successfully. */ | |
0af92d60 JK |
11583 | attr = dwarf2_attr (die, DW_AT_macros, cu); |
11584 | if (attr == NULL) | |
11585 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
3019eac3 DE |
11586 | if (attr && cu->line_header) |
11587 | { | |
11588 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
b98664d3 | 11589 | complaint (_("CU refers to both DW_AT_macros and DW_AT_macro_info")); |
3019eac3 | 11590 | |
43f3e411 | 11591 | dwarf_decode_macros (cu, DW_UNSND (attr), 1); |
3019eac3 DE |
11592 | } |
11593 | else | |
11594 | { | |
11595 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
11596 | if (attr && cu->line_header) | |
11597 | { | |
11598 | unsigned int macro_offset = DW_UNSND (attr); | |
11599 | ||
43f3e411 | 11600 | dwarf_decode_macros (cu, macro_offset, 0); |
3019eac3 DE |
11601 | } |
11602 | } | |
3019eac3 DE |
11603 | } |
11604 | ||
f4dc4d17 DE |
11605 | /* TU version of handle_DW_AT_stmt_list for read_type_unit_scope. |
11606 | Create the set of symtabs used by this TU, or if this TU is sharing | |
11607 | symtabs with another TU and the symtabs have already been created | |
11608 | then restore those symtabs in the line header. | |
11609 | We don't need the pc/line-number mapping for type units. */ | |
3019eac3 DE |
11610 | |
11611 | static void | |
f4dc4d17 | 11612 | setup_type_unit_groups (struct die_info *die, struct dwarf2_cu *cu) |
3019eac3 | 11613 | { |
f4dc4d17 DE |
11614 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
11615 | struct type_unit_group *tu_group; | |
11616 | int first_time; | |
3019eac3 | 11617 | struct attribute *attr; |
9c541725 | 11618 | unsigned int i; |
0186c6a7 | 11619 | struct signatured_type *sig_type; |
3019eac3 | 11620 | |
f4dc4d17 | 11621 | gdb_assert (per_cu->is_debug_types); |
0186c6a7 | 11622 | sig_type = (struct signatured_type *) per_cu; |
3019eac3 | 11623 | |
f4dc4d17 | 11624 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
3019eac3 | 11625 | |
f4dc4d17 | 11626 | /* If we're using .gdb_index (includes -readnow) then |
74e04d1c | 11627 | per_cu->type_unit_group may not have been set up yet. */ |
0186c6a7 DE |
11628 | if (sig_type->type_unit_group == NULL) |
11629 | sig_type->type_unit_group = get_type_unit_group (cu, attr); | |
11630 | tu_group = sig_type->type_unit_group; | |
f4dc4d17 DE |
11631 | |
11632 | /* If we've already processed this stmt_list there's no real need to | |
11633 | do it again, we could fake it and just recreate the part we need | |
11634 | (file name,index -> symtab mapping). If data shows this optimization | |
11635 | is useful we can do it then. */ | |
43f3e411 | 11636 | first_time = tu_group->compunit_symtab == NULL; |
f4dc4d17 DE |
11637 | |
11638 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
11639 | debug info. */ | |
fff8551c | 11640 | line_header_up lh; |
f4dc4d17 | 11641 | if (attr != NULL) |
3019eac3 | 11642 | { |
9c541725 | 11643 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
f4dc4d17 DE |
11644 | lh = dwarf_decode_line_header (line_offset, cu); |
11645 | } | |
11646 | if (lh == NULL) | |
11647 | { | |
11648 | if (first_time) | |
11649 | dwarf2_start_symtab (cu, "", NULL, 0); | |
11650 | else | |
11651 | { | |
11652 | gdb_assert (tu_group->symtabs == NULL); | |
804d2729 TT |
11653 | gdb_assert (cu->builder == nullptr); |
11654 | struct compunit_symtab *cust = tu_group->compunit_symtab; | |
11655 | cu->builder.reset (new struct buildsym_compunit | |
11656 | (COMPUNIT_OBJFILE (cust), "", | |
11657 | COMPUNIT_DIRNAME (cust), | |
11658 | compunit_language (cust), | |
11659 | 0, cust)); | |
f4dc4d17 | 11660 | } |
f4dc4d17 | 11661 | return; |
3019eac3 DE |
11662 | } |
11663 | ||
4c8aa72d PA |
11664 | cu->line_header = lh.release (); |
11665 | cu->line_header_die_owner = die; | |
3019eac3 | 11666 | |
f4dc4d17 DE |
11667 | if (first_time) |
11668 | { | |
43f3e411 | 11669 | struct compunit_symtab *cust = dwarf2_start_symtab (cu, "", NULL, 0); |
3019eac3 | 11670 | |
1fd60fc0 DE |
11671 | /* Note: We don't assign tu_group->compunit_symtab yet because we're |
11672 | still initializing it, and our caller (a few levels up) | |
11673 | process_full_type_unit still needs to know if this is the first | |
11674 | time. */ | |
11675 | ||
4c8aa72d PA |
11676 | tu_group->num_symtabs = cu->line_header->file_names.size (); |
11677 | tu_group->symtabs = XNEWVEC (struct symtab *, | |
11678 | cu->line_header->file_names.size ()); | |
3019eac3 | 11679 | |
4c8aa72d | 11680 | for (i = 0; i < cu->line_header->file_names.size (); ++i) |
f4dc4d17 | 11681 | { |
4c8aa72d | 11682 | file_entry &fe = cu->line_header->file_names[i]; |
3019eac3 | 11683 | |
804d2729 | 11684 | dwarf2_start_subfile (cu, fe.name, fe.include_dir (cu->line_header)); |
3019eac3 | 11685 | |
804d2729 | 11686 | if (cu->builder->get_current_subfile ()->symtab == NULL) |
f4dc4d17 | 11687 | { |
4c8aa72d PA |
11688 | /* NOTE: start_subfile will recognize when it's been |
11689 | passed a file it has already seen. So we can't | |
11690 | assume there's a simple mapping from | |
11691 | cu->line_header->file_names to subfiles, plus | |
11692 | cu->line_header->file_names may contain dups. */ | |
804d2729 TT |
11693 | cu->builder->get_current_subfile ()->symtab |
11694 | = allocate_symtab (cust, | |
11695 | cu->builder->get_current_subfile ()->name); | |
f4dc4d17 DE |
11696 | } |
11697 | ||
804d2729 | 11698 | fe.symtab = cu->builder->get_current_subfile ()->symtab; |
8c43009f | 11699 | tu_group->symtabs[i] = fe.symtab; |
f4dc4d17 DE |
11700 | } |
11701 | } | |
11702 | else | |
3019eac3 | 11703 | { |
804d2729 TT |
11704 | gdb_assert (cu->builder == nullptr); |
11705 | struct compunit_symtab *cust = tu_group->compunit_symtab; | |
11706 | cu->builder.reset (new struct buildsym_compunit | |
11707 | (COMPUNIT_OBJFILE (cust), "", | |
11708 | COMPUNIT_DIRNAME (cust), | |
11709 | compunit_language (cust), | |
11710 | 0, cust)); | |
f4dc4d17 | 11711 | |
4c8aa72d | 11712 | for (i = 0; i < cu->line_header->file_names.size (); ++i) |
f4dc4d17 | 11713 | { |
4c8aa72d | 11714 | file_entry &fe = cu->line_header->file_names[i]; |
f4dc4d17 | 11715 | |
4c8aa72d | 11716 | fe.symtab = tu_group->symtabs[i]; |
f4dc4d17 | 11717 | } |
3019eac3 DE |
11718 | } |
11719 | ||
f4dc4d17 DE |
11720 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
11721 | so they don't have a "real" (so to speak) symtab anyway. | |
11722 | There is later code that will assign the main symtab to all symbols | |
11723 | that don't have one. We need to handle the case of a symbol with a | |
11724 | missing symtab (DW_AT_decl_file) anyway. */ | |
11725 | } | |
3019eac3 | 11726 | |
f4dc4d17 DE |
11727 | /* Process DW_TAG_type_unit. |
11728 | For TUs we want to skip the first top level sibling if it's not the | |
11729 | actual type being defined by this TU. In this case the first top | |
11730 | level sibling is there to provide context only. */ | |
3019eac3 | 11731 | |
f4dc4d17 DE |
11732 | static void |
11733 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
11734 | { | |
11735 | struct die_info *child_die; | |
3019eac3 | 11736 | |
f4dc4d17 DE |
11737 | prepare_one_comp_unit (cu, die, language_minimal); |
11738 | ||
11739 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
11740 | We do this before processing child DIEs, so that the line header table | |
11741 | is available for DW_AT_decl_file. */ | |
11742 | setup_type_unit_groups (die, cu); | |
11743 | ||
11744 | if (die->child != NULL) | |
11745 | { | |
11746 | child_die = die->child; | |
11747 | while (child_die && child_die->tag) | |
11748 | { | |
11749 | process_die (child_die, cu); | |
11750 | child_die = sibling_die (child_die); | |
11751 | } | |
11752 | } | |
3019eac3 DE |
11753 | } |
11754 | \f | |
80626a55 DE |
11755 | /* DWO/DWP files. |
11756 | ||
11757 | http://gcc.gnu.org/wiki/DebugFission | |
11758 | http://gcc.gnu.org/wiki/DebugFissionDWP | |
11759 | ||
11760 | To simplify handling of both DWO files ("object" files with the DWARF info) | |
11761 | and DWP files (a file with the DWOs packaged up into one file), we treat | |
11762 | DWP files as having a collection of virtual DWO files. */ | |
3019eac3 DE |
11763 | |
11764 | static hashval_t | |
11765 | hash_dwo_file (const void *item) | |
11766 | { | |
9a3c8263 | 11767 | const struct dwo_file *dwo_file = (const struct dwo_file *) item; |
a2ce51a0 | 11768 | hashval_t hash; |
3019eac3 | 11769 | |
a2ce51a0 DE |
11770 | hash = htab_hash_string (dwo_file->dwo_name); |
11771 | if (dwo_file->comp_dir != NULL) | |
11772 | hash += htab_hash_string (dwo_file->comp_dir); | |
11773 | return hash; | |
3019eac3 DE |
11774 | } |
11775 | ||
11776 | static int | |
11777 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
11778 | { | |
9a3c8263 SM |
11779 | const struct dwo_file *lhs = (const struct dwo_file *) item_lhs; |
11780 | const struct dwo_file *rhs = (const struct dwo_file *) item_rhs; | |
3019eac3 | 11781 | |
a2ce51a0 DE |
11782 | if (strcmp (lhs->dwo_name, rhs->dwo_name) != 0) |
11783 | return 0; | |
11784 | if (lhs->comp_dir == NULL || rhs->comp_dir == NULL) | |
11785 | return lhs->comp_dir == rhs->comp_dir; | |
11786 | return strcmp (lhs->comp_dir, rhs->comp_dir) == 0; | |
3019eac3 DE |
11787 | } |
11788 | ||
11789 | /* Allocate a hash table for DWO files. */ | |
11790 | ||
11791 | static htab_t | |
ed2dc618 | 11792 | allocate_dwo_file_hash_table (struct objfile *objfile) |
3019eac3 | 11793 | { |
3019eac3 DE |
11794 | return htab_create_alloc_ex (41, |
11795 | hash_dwo_file, | |
11796 | eq_dwo_file, | |
11797 | NULL, | |
11798 | &objfile->objfile_obstack, | |
11799 | hashtab_obstack_allocate, | |
11800 | dummy_obstack_deallocate); | |
11801 | } | |
11802 | ||
80626a55 DE |
11803 | /* Lookup DWO file DWO_NAME. */ |
11804 | ||
11805 | static void ** | |
ed2dc618 SM |
11806 | lookup_dwo_file_slot (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11807 | const char *dwo_name, | |
11808 | const char *comp_dir) | |
80626a55 DE |
11809 | { |
11810 | struct dwo_file find_entry; | |
11811 | void **slot; | |
11812 | ||
11813 | if (dwarf2_per_objfile->dwo_files == NULL) | |
ed2dc618 SM |
11814 | dwarf2_per_objfile->dwo_files |
11815 | = allocate_dwo_file_hash_table (dwarf2_per_objfile->objfile); | |
80626a55 DE |
11816 | |
11817 | memset (&find_entry, 0, sizeof (find_entry)); | |
0ac5b59e DE |
11818 | find_entry.dwo_name = dwo_name; |
11819 | find_entry.comp_dir = comp_dir; | |
80626a55 DE |
11820 | slot = htab_find_slot (dwarf2_per_objfile->dwo_files, &find_entry, INSERT); |
11821 | ||
11822 | return slot; | |
11823 | } | |
11824 | ||
3019eac3 DE |
11825 | static hashval_t |
11826 | hash_dwo_unit (const void *item) | |
11827 | { | |
9a3c8263 | 11828 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 DE |
11829 | |
11830 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
11831 | return dwo_unit->signature; | |
11832 | } | |
11833 | ||
11834 | static int | |
11835 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
11836 | { | |
9a3c8263 SM |
11837 | const struct dwo_unit *lhs = (const struct dwo_unit *) item_lhs; |
11838 | const struct dwo_unit *rhs = (const struct dwo_unit *) item_rhs; | |
3019eac3 DE |
11839 | |
11840 | /* The signature is assumed to be unique within the DWO file. | |
11841 | So while object file CU dwo_id's always have the value zero, | |
11842 | that's OK, assuming each object file DWO file has only one CU, | |
11843 | and that's the rule for now. */ | |
11844 | return lhs->signature == rhs->signature; | |
11845 | } | |
11846 | ||
11847 | /* Allocate a hash table for DWO CUs,TUs. | |
11848 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
11849 | ||
11850 | static htab_t | |
11851 | allocate_dwo_unit_table (struct objfile *objfile) | |
11852 | { | |
11853 | /* Start out with a pretty small number. | |
11854 | Generally DWO files contain only one CU and maybe some TUs. */ | |
11855 | return htab_create_alloc_ex (3, | |
11856 | hash_dwo_unit, | |
11857 | eq_dwo_unit, | |
11858 | NULL, | |
11859 | &objfile->objfile_obstack, | |
11860 | hashtab_obstack_allocate, | |
11861 | dummy_obstack_deallocate); | |
11862 | } | |
11863 | ||
80626a55 | 11864 | /* Structure used to pass data to create_dwo_debug_info_hash_table_reader. */ |
3019eac3 | 11865 | |
19c3d4c9 | 11866 | struct create_dwo_cu_data |
3019eac3 DE |
11867 | { |
11868 | struct dwo_file *dwo_file; | |
19c3d4c9 | 11869 | struct dwo_unit dwo_unit; |
3019eac3 DE |
11870 | }; |
11871 | ||
19c3d4c9 | 11872 | /* die_reader_func for create_dwo_cu. */ |
3019eac3 DE |
11873 | |
11874 | static void | |
19c3d4c9 DE |
11875 | create_dwo_cu_reader (const struct die_reader_specs *reader, |
11876 | const gdb_byte *info_ptr, | |
11877 | struct die_info *comp_unit_die, | |
11878 | int has_children, | |
11879 | void *datap) | |
3019eac3 DE |
11880 | { |
11881 | struct dwarf2_cu *cu = reader->cu; | |
9c541725 | 11882 | sect_offset sect_off = cu->per_cu->sect_off; |
8a0459fd | 11883 | struct dwarf2_section_info *section = cu->per_cu->section; |
9a3c8263 | 11884 | struct create_dwo_cu_data *data = (struct create_dwo_cu_data *) datap; |
3019eac3 | 11885 | struct dwo_file *dwo_file = data->dwo_file; |
19c3d4c9 | 11886 | struct dwo_unit *dwo_unit = &data->dwo_unit; |
3019eac3 | 11887 | struct attribute *attr; |
3019eac3 DE |
11888 | |
11889 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
11890 | if (attr == NULL) | |
11891 | { | |
b98664d3 | 11892 | complaint (_("Dwarf Error: debug entry at offset %s is missing" |
19c3d4c9 | 11893 | " its dwo_id [in module %s]"), |
9d8780f0 | 11894 | sect_offset_str (sect_off), dwo_file->dwo_name); |
3019eac3 DE |
11895 | return; |
11896 | } | |
11897 | ||
3019eac3 DE |
11898 | dwo_unit->dwo_file = dwo_file; |
11899 | dwo_unit->signature = DW_UNSND (attr); | |
8a0459fd | 11900 | dwo_unit->section = section; |
9c541725 | 11901 | dwo_unit->sect_off = sect_off; |
3019eac3 DE |
11902 | dwo_unit->length = cu->per_cu->length; |
11903 | ||
b4f54984 | 11904 | if (dwarf_read_debug) |
9d8780f0 SM |
11905 | fprintf_unfiltered (gdb_stdlog, " offset %s, dwo_id %s\n", |
11906 | sect_offset_str (sect_off), | |
9c541725 | 11907 | hex_string (dwo_unit->signature)); |
3019eac3 DE |
11908 | } |
11909 | ||
33c5cd75 | 11910 | /* Create the dwo_units for the CUs in a DWO_FILE. |
19c3d4c9 | 11911 | Note: This function processes DWO files only, not DWP files. */ |
3019eac3 | 11912 | |
33c5cd75 | 11913 | static void |
ed2dc618 SM |
11914 | create_cus_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11915 | struct dwo_file &dwo_file, dwarf2_section_info §ion, | |
33c5cd75 | 11916 | htab_t &cus_htab) |
3019eac3 DE |
11917 | { |
11918 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
d521ce57 | 11919 | const gdb_byte *info_ptr, *end_ptr; |
3019eac3 | 11920 | |
33c5cd75 DB |
11921 | dwarf2_read_section (objfile, §ion); |
11922 | info_ptr = section.buffer; | |
3019eac3 DE |
11923 | |
11924 | if (info_ptr == NULL) | |
33c5cd75 | 11925 | return; |
3019eac3 | 11926 | |
b4f54984 | 11927 | if (dwarf_read_debug) |
19c3d4c9 DE |
11928 | { |
11929 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", | |
33c5cd75 DB |
11930 | get_section_name (§ion), |
11931 | get_section_file_name (§ion)); | |
19c3d4c9 | 11932 | } |
3019eac3 | 11933 | |
33c5cd75 | 11934 | end_ptr = info_ptr + section.size; |
3019eac3 DE |
11935 | while (info_ptr < end_ptr) |
11936 | { | |
11937 | struct dwarf2_per_cu_data per_cu; | |
33c5cd75 DB |
11938 | struct create_dwo_cu_data create_dwo_cu_data; |
11939 | struct dwo_unit *dwo_unit; | |
11940 | void **slot; | |
11941 | sect_offset sect_off = (sect_offset) (info_ptr - section.buffer); | |
3019eac3 | 11942 | |
19c3d4c9 DE |
11943 | memset (&create_dwo_cu_data.dwo_unit, 0, |
11944 | sizeof (create_dwo_cu_data.dwo_unit)); | |
3019eac3 | 11945 | memset (&per_cu, 0, sizeof (per_cu)); |
e3b94546 | 11946 | per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
3019eac3 | 11947 | per_cu.is_debug_types = 0; |
33c5cd75 DB |
11948 | per_cu.sect_off = sect_offset (info_ptr - section.buffer); |
11949 | per_cu.section = §ion; | |
c5ed0576 | 11950 | create_dwo_cu_data.dwo_file = &dwo_file; |
33c5cd75 DB |
11951 | |
11952 | init_cutu_and_read_dies_no_follow ( | |
11953 | &per_cu, &dwo_file, create_dwo_cu_reader, &create_dwo_cu_data); | |
11954 | info_ptr += per_cu.length; | |
11955 | ||
11956 | // If the unit could not be parsed, skip it. | |
11957 | if (create_dwo_cu_data.dwo_unit.dwo_file == NULL) | |
11958 | continue; | |
3019eac3 | 11959 | |
33c5cd75 DB |
11960 | if (cus_htab == NULL) |
11961 | cus_htab = allocate_dwo_unit_table (objfile); | |
19c3d4c9 | 11962 | |
33c5cd75 DB |
11963 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); |
11964 | *dwo_unit = create_dwo_cu_data.dwo_unit; | |
11965 | slot = htab_find_slot (cus_htab, dwo_unit, INSERT); | |
11966 | gdb_assert (slot != NULL); | |
11967 | if (*slot != NULL) | |
19c3d4c9 | 11968 | { |
33c5cd75 DB |
11969 | const struct dwo_unit *dup_cu = (const struct dwo_unit *)*slot; |
11970 | sect_offset dup_sect_off = dup_cu->sect_off; | |
19c3d4c9 | 11971 | |
b98664d3 | 11972 | complaint (_("debug cu entry at offset %s is duplicate to" |
9d8780f0 SM |
11973 | " the entry at offset %s, signature %s"), |
11974 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
33c5cd75 | 11975 | hex_string (dwo_unit->signature)); |
19c3d4c9 | 11976 | } |
33c5cd75 | 11977 | *slot = (void *)dwo_unit; |
3019eac3 | 11978 | } |
3019eac3 DE |
11979 | } |
11980 | ||
80626a55 DE |
11981 | /* DWP file .debug_{cu,tu}_index section format: |
11982 | [ref: http://gcc.gnu.org/wiki/DebugFissionDWP] | |
11983 | ||
d2415c6c DE |
11984 | DWP Version 1: |
11985 | ||
80626a55 DE |
11986 | Both index sections have the same format, and serve to map a 64-bit |
11987 | signature to a set of section numbers. Each section begins with a header, | |
11988 | followed by a hash table of 64-bit signatures, a parallel table of 32-bit | |
11989 | indexes, and a pool of 32-bit section numbers. The index sections will be | |
11990 | aligned at 8-byte boundaries in the file. | |
11991 | ||
d2415c6c DE |
11992 | The index section header consists of: |
11993 | ||
11994 | V, 32 bit version number | |
11995 | -, 32 bits unused | |
11996 | N, 32 bit number of compilation units or type units in the index | |
11997 | M, 32 bit number of slots in the hash table | |
80626a55 | 11998 | |
d2415c6c | 11999 | Numbers are recorded using the byte order of the application binary. |
80626a55 | 12000 | |
d2415c6c DE |
12001 | The hash table begins at offset 16 in the section, and consists of an array |
12002 | of M 64-bit slots. Each slot contains a 64-bit signature (using the byte | |
12003 | order of the application binary). Unused slots in the hash table are 0. | |
12004 | (We rely on the extreme unlikeliness of a signature being exactly 0.) | |
80626a55 | 12005 | |
d2415c6c DE |
12006 | The parallel table begins immediately after the hash table |
12007 | (at offset 16 + 8 * M from the beginning of the section), and consists of an | |
12008 | array of 32-bit indexes (using the byte order of the application binary), | |
12009 | corresponding 1-1 with slots in the hash table. Each entry in the parallel | |
12010 | table contains a 32-bit index into the pool of section numbers. For unused | |
12011 | hash table slots, the corresponding entry in the parallel table will be 0. | |
80626a55 | 12012 | |
73869dc2 DE |
12013 | The pool of section numbers begins immediately following the hash table |
12014 | (at offset 16 + 12 * M from the beginning of the section). The pool of | |
12015 | section numbers consists of an array of 32-bit words (using the byte order | |
12016 | of the application binary). Each item in the array is indexed starting | |
12017 | from 0. The hash table entry provides the index of the first section | |
12018 | number in the set. Additional section numbers in the set follow, and the | |
12019 | set is terminated by a 0 entry (section number 0 is not used in ELF). | |
12020 | ||
12021 | In each set of section numbers, the .debug_info.dwo or .debug_types.dwo | |
12022 | section must be the first entry in the set, and the .debug_abbrev.dwo must | |
12023 | be the second entry. Other members of the set may follow in any order. | |
12024 | ||
12025 | --- | |
12026 | ||
12027 | DWP Version 2: | |
12028 | ||
12029 | DWP Version 2 combines all the .debug_info, etc. sections into one, | |
12030 | and the entries in the index tables are now offsets into these sections. | |
12031 | CU offsets begin at 0. TU offsets begin at the size of the .debug_info | |
12032 | section. | |
12033 | ||
12034 | Index Section Contents: | |
12035 | Header | |
12036 | Hash Table of Signatures dwp_hash_table.hash_table | |
12037 | Parallel Table of Indices dwp_hash_table.unit_table | |
12038 | Table of Section Offsets dwp_hash_table.v2.{section_ids,offsets} | |
12039 | Table of Section Sizes dwp_hash_table.v2.sizes | |
12040 | ||
12041 | The index section header consists of: | |
12042 | ||
12043 | V, 32 bit version number | |
12044 | L, 32 bit number of columns in the table of section offsets | |
12045 | N, 32 bit number of compilation units or type units in the index | |
12046 | M, 32 bit number of slots in the hash table | |
12047 | ||
12048 | Numbers are recorded using the byte order of the application binary. | |
12049 | ||
12050 | The hash table has the same format as version 1. | |
12051 | The parallel table of indices has the same format as version 1, | |
12052 | except that the entries are origin-1 indices into the table of sections | |
12053 | offsets and the table of section sizes. | |
12054 | ||
12055 | The table of offsets begins immediately following the parallel table | |
12056 | (at offset 16 + 12 * M from the beginning of the section). The table is | |
12057 | a two-dimensional array of 32-bit words (using the byte order of the | |
12058 | application binary), with L columns and N+1 rows, in row-major order. | |
12059 | Each row in the array is indexed starting from 0. The first row provides | |
12060 | a key to the remaining rows: each column in this row provides an identifier | |
12061 | for a debug section, and the offsets in the same column of subsequent rows | |
12062 | refer to that section. The section identifiers are: | |
12063 | ||
12064 | DW_SECT_INFO 1 .debug_info.dwo | |
12065 | DW_SECT_TYPES 2 .debug_types.dwo | |
12066 | DW_SECT_ABBREV 3 .debug_abbrev.dwo | |
12067 | DW_SECT_LINE 4 .debug_line.dwo | |
12068 | DW_SECT_LOC 5 .debug_loc.dwo | |
12069 | DW_SECT_STR_OFFSETS 6 .debug_str_offsets.dwo | |
12070 | DW_SECT_MACINFO 7 .debug_macinfo.dwo | |
12071 | DW_SECT_MACRO 8 .debug_macro.dwo | |
12072 | ||
12073 | The offsets provided by the CU and TU index sections are the base offsets | |
12074 | for the contributions made by each CU or TU to the corresponding section | |
12075 | in the package file. Each CU and TU header contains an abbrev_offset | |
12076 | field, used to find the abbreviations table for that CU or TU within the | |
12077 | contribution to the .debug_abbrev.dwo section for that CU or TU, and should | |
12078 | be interpreted as relative to the base offset given in the index section. | |
12079 | Likewise, offsets into .debug_line.dwo from DW_AT_stmt_list attributes | |
12080 | should be interpreted as relative to the base offset for .debug_line.dwo, | |
12081 | and offsets into other debug sections obtained from DWARF attributes should | |
12082 | also be interpreted as relative to the corresponding base offset. | |
12083 | ||
12084 | The table of sizes begins immediately following the table of offsets. | |
12085 | Like the table of offsets, it is a two-dimensional array of 32-bit words, | |
12086 | with L columns and N rows, in row-major order. Each row in the array is | |
12087 | indexed starting from 1 (row 0 is shared by the two tables). | |
12088 | ||
12089 | --- | |
12090 | ||
12091 | Hash table lookup is handled the same in version 1 and 2: | |
12092 | ||
12093 | We assume that N and M will not exceed 2^32 - 1. | |
12094 | The size of the hash table, M, must be 2^k such that 2^k > 3*N/2. | |
12095 | ||
d2415c6c DE |
12096 | Given a 64-bit compilation unit signature or a type signature S, an entry |
12097 | in the hash table is located as follows: | |
80626a55 | 12098 | |
d2415c6c DE |
12099 | 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with |
12100 | the low-order k bits all set to 1. | |
80626a55 | 12101 | |
d2415c6c | 12102 | 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1). |
80626a55 | 12103 | |
d2415c6c DE |
12104 | 3) If the hash table entry at index H matches the signature, use that |
12105 | entry. If the hash table entry at index H is unused (all zeroes), | |
12106 | terminate the search: the signature is not present in the table. | |
80626a55 | 12107 | |
d2415c6c | 12108 | 4) Let H = (H + H') modulo M. Repeat at Step 3. |
80626a55 | 12109 | |
d2415c6c | 12110 | Because M > N and H' and M are relatively prime, the search is guaranteed |
73869dc2 | 12111 | to stop at an unused slot or find the match. */ |
80626a55 DE |
12112 | |
12113 | /* Create a hash table to map DWO IDs to their CU/TU entry in | |
12114 | .debug_{info,types}.dwo in DWP_FILE. | |
12115 | Returns NULL if there isn't one. | |
12116 | Note: This function processes DWP files only, not DWO files. */ | |
12117 | ||
12118 | static struct dwp_hash_table * | |
ed2dc618 SM |
12119 | create_dwp_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12120 | struct dwp_file *dwp_file, int is_debug_types) | |
80626a55 DE |
12121 | { |
12122 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
400174b1 | 12123 | bfd *dbfd = dwp_file->dbfd.get (); |
948f8e3d | 12124 | const gdb_byte *index_ptr, *index_end; |
80626a55 | 12125 | struct dwarf2_section_info *index; |
73869dc2 | 12126 | uint32_t version, nr_columns, nr_units, nr_slots; |
80626a55 DE |
12127 | struct dwp_hash_table *htab; |
12128 | ||
12129 | if (is_debug_types) | |
12130 | index = &dwp_file->sections.tu_index; | |
12131 | else | |
12132 | index = &dwp_file->sections.cu_index; | |
12133 | ||
12134 | if (dwarf2_section_empty_p (index)) | |
12135 | return NULL; | |
12136 | dwarf2_read_section (objfile, index); | |
12137 | ||
12138 | index_ptr = index->buffer; | |
12139 | index_end = index_ptr + index->size; | |
12140 | ||
12141 | version = read_4_bytes (dbfd, index_ptr); | |
73869dc2 DE |
12142 | index_ptr += 4; |
12143 | if (version == 2) | |
12144 | nr_columns = read_4_bytes (dbfd, index_ptr); | |
12145 | else | |
12146 | nr_columns = 0; | |
12147 | index_ptr += 4; | |
80626a55 DE |
12148 | nr_units = read_4_bytes (dbfd, index_ptr); |
12149 | index_ptr += 4; | |
12150 | nr_slots = read_4_bytes (dbfd, index_ptr); | |
12151 | index_ptr += 4; | |
12152 | ||
73869dc2 | 12153 | if (version != 1 && version != 2) |
80626a55 | 12154 | { |
21aa081e | 12155 | error (_("Dwarf Error: unsupported DWP file version (%s)" |
80626a55 | 12156 | " [in module %s]"), |
21aa081e | 12157 | pulongest (version), dwp_file->name); |
80626a55 DE |
12158 | } |
12159 | if (nr_slots != (nr_slots & -nr_slots)) | |
12160 | { | |
21aa081e | 12161 | error (_("Dwarf Error: number of slots in DWP hash table (%s)" |
80626a55 | 12162 | " is not power of 2 [in module %s]"), |
21aa081e | 12163 | pulongest (nr_slots), dwp_file->name); |
80626a55 DE |
12164 | } |
12165 | ||
12166 | htab = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_hash_table); | |
73869dc2 DE |
12167 | htab->version = version; |
12168 | htab->nr_columns = nr_columns; | |
80626a55 DE |
12169 | htab->nr_units = nr_units; |
12170 | htab->nr_slots = nr_slots; | |
12171 | htab->hash_table = index_ptr; | |
12172 | htab->unit_table = htab->hash_table + sizeof (uint64_t) * nr_slots; | |
73869dc2 DE |
12173 | |
12174 | /* Exit early if the table is empty. */ | |
12175 | if (nr_slots == 0 || nr_units == 0 | |
12176 | || (version == 2 && nr_columns == 0)) | |
12177 | { | |
12178 | /* All must be zero. */ | |
12179 | if (nr_slots != 0 || nr_units != 0 | |
12180 | || (version == 2 && nr_columns != 0)) | |
12181 | { | |
b98664d3 | 12182 | complaint (_("Empty DWP but nr_slots,nr_units,nr_columns not" |
73869dc2 DE |
12183 | " all zero [in modules %s]"), |
12184 | dwp_file->name); | |
12185 | } | |
12186 | return htab; | |
12187 | } | |
12188 | ||
12189 | if (version == 1) | |
12190 | { | |
12191 | htab->section_pool.v1.indices = | |
12192 | htab->unit_table + sizeof (uint32_t) * nr_slots; | |
12193 | /* It's harder to decide whether the section is too small in v1. | |
12194 | V1 is deprecated anyway so we punt. */ | |
12195 | } | |
12196 | else | |
12197 | { | |
12198 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
12199 | int *ids = htab->section_pool.v2.section_ids; | |
12200 | /* Reverse map for error checking. */ | |
12201 | int ids_seen[DW_SECT_MAX + 1]; | |
12202 | int i; | |
12203 | ||
12204 | if (nr_columns < 2) | |
12205 | { | |
12206 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
12207 | " in section table [in module %s]"), | |
12208 | dwp_file->name); | |
12209 | } | |
12210 | if (nr_columns > MAX_NR_V2_DWO_SECTIONS) | |
12211 | { | |
12212 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
12213 | " in section table [in module %s]"), | |
12214 | dwp_file->name); | |
12215 | } | |
12216 | memset (ids, 255, (DW_SECT_MAX + 1) * sizeof (int32_t)); | |
12217 | memset (ids_seen, 255, (DW_SECT_MAX + 1) * sizeof (int32_t)); | |
12218 | for (i = 0; i < nr_columns; ++i) | |
12219 | { | |
12220 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
12221 | ||
12222 | if (id < DW_SECT_MIN || id > DW_SECT_MAX) | |
12223 | { | |
12224 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
12225 | " in section table [in module %s]"), | |
12226 | id, dwp_file->name); | |
12227 | } | |
12228 | if (ids_seen[id] != -1) | |
12229 | { | |
12230 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
12231 | " id %d in section table [in module %s]"), | |
12232 | id, dwp_file->name); | |
12233 | } | |
12234 | ids_seen[id] = i; | |
12235 | ids[i] = id; | |
12236 | } | |
12237 | /* Must have exactly one info or types section. */ | |
12238 | if (((ids_seen[DW_SECT_INFO] != -1) | |
12239 | + (ids_seen[DW_SECT_TYPES] != -1)) | |
12240 | != 1) | |
12241 | { | |
12242 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
12243 | " DWO info/types section [in module %s]"), | |
12244 | dwp_file->name); | |
12245 | } | |
12246 | /* Must have an abbrev section. */ | |
12247 | if (ids_seen[DW_SECT_ABBREV] == -1) | |
12248 | { | |
12249 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
12250 | " section [in module %s]"), | |
12251 | dwp_file->name); | |
12252 | } | |
12253 | htab->section_pool.v2.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
12254 | htab->section_pool.v2.sizes = | |
12255 | htab->section_pool.v2.offsets + (sizeof (uint32_t) | |
12256 | * nr_units * nr_columns); | |
12257 | if ((htab->section_pool.v2.sizes + (sizeof (uint32_t) | |
12258 | * nr_units * nr_columns)) | |
12259 | > index_end) | |
12260 | { | |
12261 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
12262 | " [in module %s]"), | |
12263 | dwp_file->name); | |
12264 | } | |
12265 | } | |
80626a55 DE |
12266 | |
12267 | return htab; | |
12268 | } | |
12269 | ||
12270 | /* Update SECTIONS with the data from SECTP. | |
12271 | ||
12272 | This function is like the other "locate" section routines that are | |
12273 | passed to bfd_map_over_sections, but in this context the sections to | |
73869dc2 | 12274 | read comes from the DWP V1 hash table, not the full ELF section table. |
80626a55 DE |
12275 | |
12276 | The result is non-zero for success, or zero if an error was found. */ | |
12277 | ||
12278 | static int | |
73869dc2 DE |
12279 | locate_v1_virtual_dwo_sections (asection *sectp, |
12280 | struct virtual_v1_dwo_sections *sections) | |
80626a55 DE |
12281 | { |
12282 | const struct dwop_section_names *names = &dwop_section_names; | |
12283 | ||
12284 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12285 | { | |
12286 | /* There can be only one. */ | |
049412e3 | 12287 | if (sections->abbrev.s.section != NULL) |
80626a55 | 12288 | return 0; |
049412e3 | 12289 | sections->abbrev.s.section = sectp; |
80626a55 DE |
12290 | sections->abbrev.size = bfd_get_section_size (sectp); |
12291 | } | |
12292 | else if (section_is_p (sectp->name, &names->info_dwo) | |
12293 | || section_is_p (sectp->name, &names->types_dwo)) | |
12294 | { | |
12295 | /* There can be only one. */ | |
049412e3 | 12296 | if (sections->info_or_types.s.section != NULL) |
80626a55 | 12297 | return 0; |
049412e3 | 12298 | sections->info_or_types.s.section = sectp; |
80626a55 DE |
12299 | sections->info_or_types.size = bfd_get_section_size (sectp); |
12300 | } | |
12301 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12302 | { | |
12303 | /* There can be only one. */ | |
049412e3 | 12304 | if (sections->line.s.section != NULL) |
80626a55 | 12305 | return 0; |
049412e3 | 12306 | sections->line.s.section = sectp; |
80626a55 DE |
12307 | sections->line.size = bfd_get_section_size (sectp); |
12308 | } | |
12309 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12310 | { | |
12311 | /* There can be only one. */ | |
049412e3 | 12312 | if (sections->loc.s.section != NULL) |
80626a55 | 12313 | return 0; |
049412e3 | 12314 | sections->loc.s.section = sectp; |
80626a55 DE |
12315 | sections->loc.size = bfd_get_section_size (sectp); |
12316 | } | |
12317 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
12318 | { | |
12319 | /* There can be only one. */ | |
049412e3 | 12320 | if (sections->macinfo.s.section != NULL) |
80626a55 | 12321 | return 0; |
049412e3 | 12322 | sections->macinfo.s.section = sectp; |
80626a55 DE |
12323 | sections->macinfo.size = bfd_get_section_size (sectp); |
12324 | } | |
12325 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12326 | { | |
12327 | /* There can be only one. */ | |
049412e3 | 12328 | if (sections->macro.s.section != NULL) |
80626a55 | 12329 | return 0; |
049412e3 | 12330 | sections->macro.s.section = sectp; |
80626a55 DE |
12331 | sections->macro.size = bfd_get_section_size (sectp); |
12332 | } | |
12333 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12334 | { | |
12335 | /* There can be only one. */ | |
049412e3 | 12336 | if (sections->str_offsets.s.section != NULL) |
80626a55 | 12337 | return 0; |
049412e3 | 12338 | sections->str_offsets.s.section = sectp; |
80626a55 DE |
12339 | sections->str_offsets.size = bfd_get_section_size (sectp); |
12340 | } | |
12341 | else | |
12342 | { | |
12343 | /* No other kind of section is valid. */ | |
12344 | return 0; | |
12345 | } | |
12346 | ||
12347 | return 1; | |
12348 | } | |
12349 | ||
73869dc2 DE |
12350 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. |
12351 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12352 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12353 | This is for DWP version 1 files. */ | |
80626a55 DE |
12354 | |
12355 | static struct dwo_unit * | |
ed2dc618 SM |
12356 | create_dwo_unit_in_dwp_v1 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12357 | struct dwp_file *dwp_file, | |
73869dc2 DE |
12358 | uint32_t unit_index, |
12359 | const char *comp_dir, | |
12360 | ULONGEST signature, int is_debug_types) | |
80626a55 DE |
12361 | { |
12362 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
73869dc2 DE |
12363 | const struct dwp_hash_table *dwp_htab = |
12364 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12365 | bfd *dbfd = dwp_file->dbfd.get (); |
80626a55 DE |
12366 | const char *kind = is_debug_types ? "TU" : "CU"; |
12367 | struct dwo_file *dwo_file; | |
12368 | struct dwo_unit *dwo_unit; | |
73869dc2 | 12369 | struct virtual_v1_dwo_sections sections; |
80626a55 | 12370 | void **dwo_file_slot; |
80626a55 DE |
12371 | int i; |
12372 | ||
73869dc2 DE |
12373 | gdb_assert (dwp_file->version == 1); |
12374 | ||
b4f54984 | 12375 | if (dwarf_read_debug) |
80626a55 | 12376 | { |
73869dc2 | 12377 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V1 file: %s\n", |
80626a55 | 12378 | kind, |
73869dc2 | 12379 | pulongest (unit_index), hex_string (signature), |
80626a55 DE |
12380 | dwp_file->name); |
12381 | } | |
12382 | ||
19ac8c2e | 12383 | /* Fetch the sections of this DWO unit. |
80626a55 DE |
12384 | Put a limit on the number of sections we look for so that bad data |
12385 | doesn't cause us to loop forever. */ | |
12386 | ||
73869dc2 | 12387 | #define MAX_NR_V1_DWO_SECTIONS \ |
80626a55 DE |
12388 | (1 /* .debug_info or .debug_types */ \ |
12389 | + 1 /* .debug_abbrev */ \ | |
12390 | + 1 /* .debug_line */ \ | |
12391 | + 1 /* .debug_loc */ \ | |
12392 | + 1 /* .debug_str_offsets */ \ | |
19ac8c2e | 12393 | + 1 /* .debug_macro or .debug_macinfo */ \ |
80626a55 DE |
12394 | + 1 /* trailing zero */) |
12395 | ||
12396 | memset (§ions, 0, sizeof (sections)); | |
80626a55 | 12397 | |
73869dc2 | 12398 | for (i = 0; i < MAX_NR_V1_DWO_SECTIONS; ++i) |
80626a55 DE |
12399 | { |
12400 | asection *sectp; | |
12401 | uint32_t section_nr = | |
12402 | read_4_bytes (dbfd, | |
73869dc2 DE |
12403 | dwp_htab->section_pool.v1.indices |
12404 | + (unit_index + i) * sizeof (uint32_t)); | |
80626a55 DE |
12405 | |
12406 | if (section_nr == 0) | |
12407 | break; | |
12408 | if (section_nr >= dwp_file->num_sections) | |
12409 | { | |
12410 | error (_("Dwarf Error: bad DWP hash table, section number too large" | |
12411 | " [in module %s]"), | |
12412 | dwp_file->name); | |
12413 | } | |
12414 | ||
12415 | sectp = dwp_file->elf_sections[section_nr]; | |
73869dc2 | 12416 | if (! locate_v1_virtual_dwo_sections (sectp, §ions)) |
80626a55 DE |
12417 | { |
12418 | error (_("Dwarf Error: bad DWP hash table, invalid section found" | |
12419 | " [in module %s]"), | |
12420 | dwp_file->name); | |
12421 | } | |
12422 | } | |
12423 | ||
12424 | if (i < 2 | |
a32a8923 DE |
12425 | || dwarf2_section_empty_p (§ions.info_or_types) |
12426 | || dwarf2_section_empty_p (§ions.abbrev)) | |
80626a55 DE |
12427 | { |
12428 | error (_("Dwarf Error: bad DWP hash table, missing DWO sections" | |
12429 | " [in module %s]"), | |
12430 | dwp_file->name); | |
12431 | } | |
73869dc2 | 12432 | if (i == MAX_NR_V1_DWO_SECTIONS) |
80626a55 DE |
12433 | { |
12434 | error (_("Dwarf Error: bad DWP hash table, too many DWO sections" | |
12435 | " [in module %s]"), | |
12436 | dwp_file->name); | |
12437 | } | |
12438 | ||
12439 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12440 | have dwo_unit "live" in that. At least for now. | |
12441 | ||
12442 | The DWP file can be made up of a random collection of CUs and TUs. | |
c766f7ec | 12443 | However, for each CU + set of TUs that came from the same original DWO |
57d63ce2 DE |
12444 | file, we can combine them back into a virtual DWO file to save space |
12445 | (fewer struct dwo_file objects to allocate). Remember that for really | |
80626a55 DE |
12446 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ |
12447 | ||
791afaa2 TT |
12448 | std::string virtual_dwo_name = |
12449 | string_printf ("virtual-dwo/%d-%d-%d-%d", | |
12450 | get_section_id (§ions.abbrev), | |
12451 | get_section_id (§ions.line), | |
12452 | get_section_id (§ions.loc), | |
12453 | get_section_id (§ions.str_offsets)); | |
80626a55 | 12454 | /* Can we use an existing virtual DWO file? */ |
ed2dc618 SM |
12455 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
12456 | virtual_dwo_name.c_str (), | |
12457 | comp_dir); | |
80626a55 DE |
12458 | /* Create one if necessary. */ |
12459 | if (*dwo_file_slot == NULL) | |
12460 | { | |
b4f54984 | 12461 | if (dwarf_read_debug) |
80626a55 DE |
12462 | { |
12463 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 12464 | virtual_dwo_name.c_str ()); |
80626a55 DE |
12465 | } |
12466 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
224c3ddb SM |
12467 | dwo_file->dwo_name |
12468 | = (const char *) obstack_copy0 (&objfile->objfile_obstack, | |
791afaa2 TT |
12469 | virtual_dwo_name.c_str (), |
12470 | virtual_dwo_name.size ()); | |
0ac5b59e | 12471 | dwo_file->comp_dir = comp_dir; |
80626a55 DE |
12472 | dwo_file->sections.abbrev = sections.abbrev; |
12473 | dwo_file->sections.line = sections.line; | |
12474 | dwo_file->sections.loc = sections.loc; | |
12475 | dwo_file->sections.macinfo = sections.macinfo; | |
12476 | dwo_file->sections.macro = sections.macro; | |
12477 | dwo_file->sections.str_offsets = sections.str_offsets; | |
12478 | /* The "str" section is global to the entire DWP file. */ | |
12479 | dwo_file->sections.str = dwp_file->sections.str; | |
57d63ce2 | 12480 | /* The info or types section is assigned below to dwo_unit, |
80626a55 DE |
12481 | there's no need to record it in dwo_file. |
12482 | Also, we can't simply record type sections in dwo_file because | |
12483 | we record a pointer into the vector in dwo_unit. As we collect more | |
12484 | types we'll grow the vector and eventually have to reallocate space | |
57d63ce2 DE |
12485 | for it, invalidating all copies of pointers into the previous |
12486 | contents. */ | |
80626a55 DE |
12487 | *dwo_file_slot = dwo_file; |
12488 | } | |
12489 | else | |
12490 | { | |
b4f54984 | 12491 | if (dwarf_read_debug) |
80626a55 DE |
12492 | { |
12493 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 12494 | virtual_dwo_name.c_str ()); |
80626a55 | 12495 | } |
9a3c8263 | 12496 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
80626a55 | 12497 | } |
80626a55 DE |
12498 | |
12499 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
12500 | dwo_unit->dwo_file = dwo_file; | |
12501 | dwo_unit->signature = signature; | |
8d749320 SM |
12502 | dwo_unit->section = |
12503 | XOBNEW (&objfile->objfile_obstack, struct dwarf2_section_info); | |
8a0459fd | 12504 | *dwo_unit->section = sections.info_or_types; |
57d63ce2 | 12505 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
80626a55 DE |
12506 | |
12507 | return dwo_unit; | |
12508 | } | |
12509 | ||
73869dc2 DE |
12510 | /* Subroutine of create_dwo_unit_in_dwp_v2 to simplify it. |
12511 | Given a pointer to the containing section SECTION, and OFFSET,SIZE of the | |
12512 | piece within that section used by a TU/CU, return a virtual section | |
12513 | of just that piece. */ | |
12514 | ||
12515 | static struct dwarf2_section_info | |
ed2dc618 SM |
12516 | create_dwp_v2_section (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12517 | struct dwarf2_section_info *section, | |
73869dc2 DE |
12518 | bfd_size_type offset, bfd_size_type size) |
12519 | { | |
12520 | struct dwarf2_section_info result; | |
12521 | asection *sectp; | |
12522 | ||
12523 | gdb_assert (section != NULL); | |
12524 | gdb_assert (!section->is_virtual); | |
12525 | ||
12526 | memset (&result, 0, sizeof (result)); | |
12527 | result.s.containing_section = section; | |
12528 | result.is_virtual = 1; | |
12529 | ||
12530 | if (size == 0) | |
12531 | return result; | |
12532 | ||
12533 | sectp = get_section_bfd_section (section); | |
12534 | ||
12535 | /* Flag an error if the piece denoted by OFFSET,SIZE is outside the | |
12536 | bounds of the real section. This is a pretty-rare event, so just | |
12537 | flag an error (easier) instead of a warning and trying to cope. */ | |
12538 | if (sectp == NULL | |
12539 | || offset + size > bfd_get_section_size (sectp)) | |
12540 | { | |
73869dc2 DE |
12541 | error (_("Dwarf Error: Bad DWP V2 section info, doesn't fit" |
12542 | " in section %s [in module %s]"), | |
12543 | sectp ? bfd_section_name (abfd, sectp) : "<unknown>", | |
12544 | objfile_name (dwarf2_per_objfile->objfile)); | |
12545 | } | |
12546 | ||
12547 | result.virtual_offset = offset; | |
12548 | result.size = size; | |
12549 | return result; | |
12550 | } | |
12551 | ||
12552 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
12553 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12554 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12555 | This is for DWP version 2 files. */ | |
12556 | ||
12557 | static struct dwo_unit * | |
ed2dc618 SM |
12558 | create_dwo_unit_in_dwp_v2 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12559 | struct dwp_file *dwp_file, | |
73869dc2 DE |
12560 | uint32_t unit_index, |
12561 | const char *comp_dir, | |
12562 | ULONGEST signature, int is_debug_types) | |
12563 | { | |
12564 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
12565 | const struct dwp_hash_table *dwp_htab = | |
12566 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12567 | bfd *dbfd = dwp_file->dbfd.get (); |
73869dc2 DE |
12568 | const char *kind = is_debug_types ? "TU" : "CU"; |
12569 | struct dwo_file *dwo_file; | |
12570 | struct dwo_unit *dwo_unit; | |
12571 | struct virtual_v2_dwo_sections sections; | |
12572 | void **dwo_file_slot; | |
73869dc2 DE |
12573 | int i; |
12574 | ||
12575 | gdb_assert (dwp_file->version == 2); | |
12576 | ||
b4f54984 | 12577 | if (dwarf_read_debug) |
73869dc2 DE |
12578 | { |
12579 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V2 file: %s\n", | |
12580 | kind, | |
12581 | pulongest (unit_index), hex_string (signature), | |
12582 | dwp_file->name); | |
12583 | } | |
12584 | ||
12585 | /* Fetch the section offsets of this DWO unit. */ | |
12586 | ||
12587 | memset (§ions, 0, sizeof (sections)); | |
73869dc2 DE |
12588 | |
12589 | for (i = 0; i < dwp_htab->nr_columns; ++i) | |
12590 | { | |
12591 | uint32_t offset = read_4_bytes (dbfd, | |
12592 | dwp_htab->section_pool.v2.offsets | |
12593 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12594 | + i) | |
12595 | * sizeof (uint32_t))); | |
12596 | uint32_t size = read_4_bytes (dbfd, | |
12597 | dwp_htab->section_pool.v2.sizes | |
12598 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12599 | + i) | |
12600 | * sizeof (uint32_t))); | |
12601 | ||
12602 | switch (dwp_htab->section_pool.v2.section_ids[i]) | |
12603 | { | |
12604 | case DW_SECT_INFO: | |
12605 | case DW_SECT_TYPES: | |
12606 | sections.info_or_types_offset = offset; | |
12607 | sections.info_or_types_size = size; | |
12608 | break; | |
12609 | case DW_SECT_ABBREV: | |
12610 | sections.abbrev_offset = offset; | |
12611 | sections.abbrev_size = size; | |
12612 | break; | |
12613 | case DW_SECT_LINE: | |
12614 | sections.line_offset = offset; | |
12615 | sections.line_size = size; | |
12616 | break; | |
12617 | case DW_SECT_LOC: | |
12618 | sections.loc_offset = offset; | |
12619 | sections.loc_size = size; | |
12620 | break; | |
12621 | case DW_SECT_STR_OFFSETS: | |
12622 | sections.str_offsets_offset = offset; | |
12623 | sections.str_offsets_size = size; | |
12624 | break; | |
12625 | case DW_SECT_MACINFO: | |
12626 | sections.macinfo_offset = offset; | |
12627 | sections.macinfo_size = size; | |
12628 | break; | |
12629 | case DW_SECT_MACRO: | |
12630 | sections.macro_offset = offset; | |
12631 | sections.macro_size = size; | |
12632 | break; | |
12633 | } | |
12634 | } | |
12635 | ||
12636 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12637 | have dwo_unit "live" in that. At least for now. | |
12638 | ||
12639 | The DWP file can be made up of a random collection of CUs and TUs. | |
12640 | However, for each CU + set of TUs that came from the same original DWO | |
12641 | file, we can combine them back into a virtual DWO file to save space | |
12642 | (fewer struct dwo_file objects to allocate). Remember that for really | |
12643 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
12644 | ||
791afaa2 TT |
12645 | std::string virtual_dwo_name = |
12646 | string_printf ("virtual-dwo/%ld-%ld-%ld-%ld", | |
12647 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), | |
12648 | (long) (sections.line_size ? sections.line_offset : 0), | |
12649 | (long) (sections.loc_size ? sections.loc_offset : 0), | |
12650 | (long) (sections.str_offsets_size | |
12651 | ? sections.str_offsets_offset : 0)); | |
73869dc2 | 12652 | /* Can we use an existing virtual DWO file? */ |
ed2dc618 SM |
12653 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
12654 | virtual_dwo_name.c_str (), | |
12655 | comp_dir); | |
73869dc2 DE |
12656 | /* Create one if necessary. */ |
12657 | if (*dwo_file_slot == NULL) | |
12658 | { | |
b4f54984 | 12659 | if (dwarf_read_debug) |
73869dc2 DE |
12660 | { |
12661 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 12662 | virtual_dwo_name.c_str ()); |
73869dc2 DE |
12663 | } |
12664 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
224c3ddb SM |
12665 | dwo_file->dwo_name |
12666 | = (const char *) obstack_copy0 (&objfile->objfile_obstack, | |
791afaa2 TT |
12667 | virtual_dwo_name.c_str (), |
12668 | virtual_dwo_name.size ()); | |
73869dc2 DE |
12669 | dwo_file->comp_dir = comp_dir; |
12670 | dwo_file->sections.abbrev = | |
ed2dc618 | 12671 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.abbrev, |
73869dc2 DE |
12672 | sections.abbrev_offset, sections.abbrev_size); |
12673 | dwo_file->sections.line = | |
ed2dc618 | 12674 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.line, |
73869dc2 DE |
12675 | sections.line_offset, sections.line_size); |
12676 | dwo_file->sections.loc = | |
ed2dc618 | 12677 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.loc, |
73869dc2 DE |
12678 | sections.loc_offset, sections.loc_size); |
12679 | dwo_file->sections.macinfo = | |
ed2dc618 | 12680 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.macinfo, |
73869dc2 DE |
12681 | sections.macinfo_offset, sections.macinfo_size); |
12682 | dwo_file->sections.macro = | |
ed2dc618 | 12683 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.macro, |
73869dc2 DE |
12684 | sections.macro_offset, sections.macro_size); |
12685 | dwo_file->sections.str_offsets = | |
ed2dc618 SM |
12686 | create_dwp_v2_section (dwarf2_per_objfile, |
12687 | &dwp_file->sections.str_offsets, | |
73869dc2 DE |
12688 | sections.str_offsets_offset, |
12689 | sections.str_offsets_size); | |
12690 | /* The "str" section is global to the entire DWP file. */ | |
12691 | dwo_file->sections.str = dwp_file->sections.str; | |
12692 | /* The info or types section is assigned below to dwo_unit, | |
12693 | there's no need to record it in dwo_file. | |
12694 | Also, we can't simply record type sections in dwo_file because | |
12695 | we record a pointer into the vector in dwo_unit. As we collect more | |
12696 | types we'll grow the vector and eventually have to reallocate space | |
12697 | for it, invalidating all copies of pointers into the previous | |
12698 | contents. */ | |
12699 | *dwo_file_slot = dwo_file; | |
12700 | } | |
12701 | else | |
12702 | { | |
b4f54984 | 12703 | if (dwarf_read_debug) |
73869dc2 DE |
12704 | { |
12705 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 12706 | virtual_dwo_name.c_str ()); |
73869dc2 | 12707 | } |
9a3c8263 | 12708 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
73869dc2 | 12709 | } |
73869dc2 DE |
12710 | |
12711 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
12712 | dwo_unit->dwo_file = dwo_file; | |
12713 | dwo_unit->signature = signature; | |
8d749320 SM |
12714 | dwo_unit->section = |
12715 | XOBNEW (&objfile->objfile_obstack, struct dwarf2_section_info); | |
ed2dc618 SM |
12716 | *dwo_unit->section = create_dwp_v2_section (dwarf2_per_objfile, |
12717 | is_debug_types | |
73869dc2 DE |
12718 | ? &dwp_file->sections.types |
12719 | : &dwp_file->sections.info, | |
12720 | sections.info_or_types_offset, | |
12721 | sections.info_or_types_size); | |
12722 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ | |
12723 | ||
12724 | return dwo_unit; | |
12725 | } | |
12726 | ||
57d63ce2 DE |
12727 | /* Lookup the DWO unit with SIGNATURE in DWP_FILE. |
12728 | Returns NULL if the signature isn't found. */ | |
80626a55 DE |
12729 | |
12730 | static struct dwo_unit * | |
ed2dc618 SM |
12731 | lookup_dwo_unit_in_dwp (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12732 | struct dwp_file *dwp_file, const char *comp_dir, | |
57d63ce2 | 12733 | ULONGEST signature, int is_debug_types) |
80626a55 | 12734 | { |
57d63ce2 DE |
12735 | const struct dwp_hash_table *dwp_htab = |
12736 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12737 | bfd *dbfd = dwp_file->dbfd.get (); |
57d63ce2 | 12738 | uint32_t mask = dwp_htab->nr_slots - 1; |
80626a55 DE |
12739 | uint32_t hash = signature & mask; |
12740 | uint32_t hash2 = ((signature >> 32) & mask) | 1; | |
12741 | unsigned int i; | |
12742 | void **slot; | |
870f88f7 | 12743 | struct dwo_unit find_dwo_cu; |
80626a55 DE |
12744 | |
12745 | memset (&find_dwo_cu, 0, sizeof (find_dwo_cu)); | |
12746 | find_dwo_cu.signature = signature; | |
19ac8c2e DE |
12747 | slot = htab_find_slot (is_debug_types |
12748 | ? dwp_file->loaded_tus | |
12749 | : dwp_file->loaded_cus, | |
12750 | &find_dwo_cu, INSERT); | |
80626a55 DE |
12751 | |
12752 | if (*slot != NULL) | |
9a3c8263 | 12753 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12754 | |
12755 | /* Use a for loop so that we don't loop forever on bad debug info. */ | |
57d63ce2 | 12756 | for (i = 0; i < dwp_htab->nr_slots; ++i) |
80626a55 DE |
12757 | { |
12758 | ULONGEST signature_in_table; | |
12759 | ||
12760 | signature_in_table = | |
57d63ce2 | 12761 | read_8_bytes (dbfd, dwp_htab->hash_table + hash * sizeof (uint64_t)); |
80626a55 DE |
12762 | if (signature_in_table == signature) |
12763 | { | |
57d63ce2 DE |
12764 | uint32_t unit_index = |
12765 | read_4_bytes (dbfd, | |
12766 | dwp_htab->unit_table + hash * sizeof (uint32_t)); | |
80626a55 | 12767 | |
73869dc2 DE |
12768 | if (dwp_file->version == 1) |
12769 | { | |
ed2dc618 SM |
12770 | *slot = create_dwo_unit_in_dwp_v1 (dwarf2_per_objfile, |
12771 | dwp_file, unit_index, | |
73869dc2 DE |
12772 | comp_dir, signature, |
12773 | is_debug_types); | |
12774 | } | |
12775 | else | |
12776 | { | |
ed2dc618 SM |
12777 | *slot = create_dwo_unit_in_dwp_v2 (dwarf2_per_objfile, |
12778 | dwp_file, unit_index, | |
73869dc2 DE |
12779 | comp_dir, signature, |
12780 | is_debug_types); | |
12781 | } | |
9a3c8263 | 12782 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12783 | } |
12784 | if (signature_in_table == 0) | |
12785 | return NULL; | |
12786 | hash = (hash + hash2) & mask; | |
12787 | } | |
12788 | ||
12789 | error (_("Dwarf Error: bad DWP hash table, lookup didn't terminate" | |
12790 | " [in module %s]"), | |
12791 | dwp_file->name); | |
12792 | } | |
12793 | ||
ab5088bf | 12794 | /* Subroutine of open_dwo_file,open_dwp_file to simplify them. |
3019eac3 DE |
12795 | Open the file specified by FILE_NAME and hand it off to BFD for |
12796 | preliminary analysis. Return a newly initialized bfd *, which | |
12797 | includes a canonicalized copy of FILE_NAME. | |
80626a55 | 12798 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
6ac97d4c DE |
12799 | SEARCH_CWD is true if the current directory is to be searched. |
12800 | It will be searched before debug-file-directory. | |
13aaf454 DE |
12801 | If successful, the file is added to the bfd include table of the |
12802 | objfile's bfd (see gdb_bfd_record_inclusion). | |
6ac97d4c | 12803 | If unable to find/open the file, return NULL. |
3019eac3 DE |
12804 | NOTE: This function is derived from symfile_bfd_open. */ |
12805 | ||
192b62ce | 12806 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
12807 | try_open_dwop_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12808 | const char *file_name, int is_dwp, int search_cwd) | |
3019eac3 | 12809 | { |
24b9144d | 12810 | int desc; |
9c02c129 DE |
12811 | /* Blech. OPF_TRY_CWD_FIRST also disables searching the path list if |
12812 | FILE_NAME contains a '/'. So we can't use it. Instead prepend "." | |
12813 | to debug_file_directory. */ | |
e0cc99a6 | 12814 | const char *search_path; |
9c02c129 DE |
12815 | static const char dirname_separator_string[] = { DIRNAME_SEPARATOR, '\0' }; |
12816 | ||
e0cc99a6 | 12817 | gdb::unique_xmalloc_ptr<char> search_path_holder; |
6ac97d4c DE |
12818 | if (search_cwd) |
12819 | { | |
12820 | if (*debug_file_directory != '\0') | |
e0cc99a6 TT |
12821 | { |
12822 | search_path_holder.reset (concat (".", dirname_separator_string, | |
12823 | debug_file_directory, | |
12824 | (char *) NULL)); | |
12825 | search_path = search_path_holder.get (); | |
12826 | } | |
6ac97d4c | 12827 | else |
e0cc99a6 | 12828 | search_path = "."; |
6ac97d4c | 12829 | } |
9c02c129 | 12830 | else |
e0cc99a6 | 12831 | search_path = debug_file_directory; |
3019eac3 | 12832 | |
24b9144d | 12833 | openp_flags flags = OPF_RETURN_REALPATH; |
80626a55 DE |
12834 | if (is_dwp) |
12835 | flags |= OPF_SEARCH_IN_PATH; | |
e0cc99a6 TT |
12836 | |
12837 | gdb::unique_xmalloc_ptr<char> absolute_name; | |
9c02c129 | 12838 | desc = openp (search_path, flags, file_name, |
3019eac3 DE |
12839 | O_RDONLY | O_BINARY, &absolute_name); |
12840 | if (desc < 0) | |
12841 | return NULL; | |
12842 | ||
e0cc99a6 TT |
12843 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (absolute_name.get (), |
12844 | gnutarget, desc)); | |
9c02c129 DE |
12845 | if (sym_bfd == NULL) |
12846 | return NULL; | |
192b62ce | 12847 | bfd_set_cacheable (sym_bfd.get (), 1); |
3019eac3 | 12848 | |
192b62ce TT |
12849 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
12850 | return NULL; | |
3019eac3 | 12851 | |
13aaf454 DE |
12852 | /* Success. Record the bfd as having been included by the objfile's bfd. |
12853 | This is important because things like demangled_names_hash lives in the | |
12854 | objfile's per_bfd space and may have references to things like symbol | |
12855 | names that live in the DWO/DWP file's per_bfd space. PR 16426. */ | |
192b62ce | 12856 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, sym_bfd.get ()); |
13aaf454 | 12857 | |
3019eac3 DE |
12858 | return sym_bfd; |
12859 | } | |
12860 | ||
ab5088bf | 12861 | /* Try to open DWO file FILE_NAME. |
3019eac3 DE |
12862 | COMP_DIR is the DW_AT_comp_dir attribute. |
12863 | The result is the bfd handle of the file. | |
12864 | If there is a problem finding or opening the file, return NULL. | |
12865 | Upon success, the canonicalized path of the file is stored in the bfd, | |
12866 | same as symfile_bfd_open. */ | |
12867 | ||
192b62ce | 12868 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
12869 | open_dwo_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12870 | const char *file_name, const char *comp_dir) | |
3019eac3 | 12871 | { |
80626a55 | 12872 | if (IS_ABSOLUTE_PATH (file_name)) |
ed2dc618 SM |
12873 | return try_open_dwop_file (dwarf2_per_objfile, file_name, |
12874 | 0 /*is_dwp*/, 0 /*search_cwd*/); | |
3019eac3 DE |
12875 | |
12876 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
12877 | ||
12878 | if (comp_dir != NULL) | |
12879 | { | |
b36cec19 PA |
12880 | char *path_to_try = concat (comp_dir, SLASH_STRING, |
12881 | file_name, (char *) NULL); | |
3019eac3 DE |
12882 | |
12883 | /* NOTE: If comp_dir is a relative path, this will also try the | |
12884 | search path, which seems useful. */ | |
ed2dc618 SM |
12885 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (dwarf2_per_objfile, |
12886 | path_to_try, | |
12887 | 0 /*is_dwp*/, | |
192b62ce | 12888 | 1 /*search_cwd*/)); |
3019eac3 DE |
12889 | xfree (path_to_try); |
12890 | if (abfd != NULL) | |
12891 | return abfd; | |
12892 | } | |
12893 | ||
12894 | /* That didn't work, try debug-file-directory, which, despite its name, | |
12895 | is a list of paths. */ | |
12896 | ||
12897 | if (*debug_file_directory == '\0') | |
12898 | return NULL; | |
12899 | ||
ed2dc618 SM |
12900 | return try_open_dwop_file (dwarf2_per_objfile, file_name, |
12901 | 0 /*is_dwp*/, 1 /*search_cwd*/); | |
3019eac3 DE |
12902 | } |
12903 | ||
80626a55 DE |
12904 | /* This function is mapped across the sections and remembers the offset and |
12905 | size of each of the DWO debugging sections we are interested in. */ | |
12906 | ||
12907 | static void | |
12908 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, void *dwo_sections_ptr) | |
12909 | { | |
9a3c8263 | 12910 | struct dwo_sections *dwo_sections = (struct dwo_sections *) dwo_sections_ptr; |
80626a55 DE |
12911 | const struct dwop_section_names *names = &dwop_section_names; |
12912 | ||
12913 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12914 | { | |
049412e3 | 12915 | dwo_sections->abbrev.s.section = sectp; |
80626a55 DE |
12916 | dwo_sections->abbrev.size = bfd_get_section_size (sectp); |
12917 | } | |
12918 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12919 | { | |
049412e3 | 12920 | dwo_sections->info.s.section = sectp; |
80626a55 DE |
12921 | dwo_sections->info.size = bfd_get_section_size (sectp); |
12922 | } | |
12923 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12924 | { | |
049412e3 | 12925 | dwo_sections->line.s.section = sectp; |
80626a55 DE |
12926 | dwo_sections->line.size = bfd_get_section_size (sectp); |
12927 | } | |
12928 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12929 | { | |
049412e3 | 12930 | dwo_sections->loc.s.section = sectp; |
80626a55 DE |
12931 | dwo_sections->loc.size = bfd_get_section_size (sectp); |
12932 | } | |
12933 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
12934 | { | |
049412e3 | 12935 | dwo_sections->macinfo.s.section = sectp; |
80626a55 DE |
12936 | dwo_sections->macinfo.size = bfd_get_section_size (sectp); |
12937 | } | |
12938 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12939 | { | |
049412e3 | 12940 | dwo_sections->macro.s.section = sectp; |
80626a55 DE |
12941 | dwo_sections->macro.size = bfd_get_section_size (sectp); |
12942 | } | |
12943 | else if (section_is_p (sectp->name, &names->str_dwo)) | |
12944 | { | |
049412e3 | 12945 | dwo_sections->str.s.section = sectp; |
80626a55 DE |
12946 | dwo_sections->str.size = bfd_get_section_size (sectp); |
12947 | } | |
12948 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12949 | { | |
049412e3 | 12950 | dwo_sections->str_offsets.s.section = sectp; |
80626a55 DE |
12951 | dwo_sections->str_offsets.size = bfd_get_section_size (sectp); |
12952 | } | |
12953 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
12954 | { | |
12955 | struct dwarf2_section_info type_section; | |
12956 | ||
12957 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 12958 | type_section.s.section = sectp; |
80626a55 DE |
12959 | type_section.size = bfd_get_section_size (sectp); |
12960 | VEC_safe_push (dwarf2_section_info_def, dwo_sections->types, | |
12961 | &type_section); | |
12962 | } | |
12963 | } | |
12964 | ||
ab5088bf | 12965 | /* Initialize the use of the DWO file specified by DWO_NAME and referenced |
19c3d4c9 | 12966 | by PER_CU. This is for the non-DWP case. |
80626a55 | 12967 | The result is NULL if DWO_NAME can't be found. */ |
3019eac3 DE |
12968 | |
12969 | static struct dwo_file * | |
0ac5b59e DE |
12970 | open_and_init_dwo_file (struct dwarf2_per_cu_data *per_cu, |
12971 | const char *dwo_name, const char *comp_dir) | |
3019eac3 | 12972 | { |
ed2dc618 | 12973 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
3019eac3 | 12974 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 | 12975 | |
ed2dc618 | 12976 | gdb_bfd_ref_ptr dbfd (open_dwo_file (dwarf2_per_objfile, dwo_name, comp_dir)); |
80626a55 DE |
12977 | if (dbfd == NULL) |
12978 | { | |
b4f54984 | 12979 | if (dwarf_read_debug) |
80626a55 DE |
12980 | fprintf_unfiltered (gdb_stdlog, "DWO file not found: %s\n", dwo_name); |
12981 | return NULL; | |
12982 | } | |
263db9a1 TT |
12983 | |
12984 | /* We use a unique pointer here, despite the obstack allocation, | |
12985 | because a dwo_file needs some cleanup if it is abandoned. */ | |
12986 | dwo_file_up dwo_file (OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
12987 | struct dwo_file)); | |
0ac5b59e DE |
12988 | dwo_file->dwo_name = dwo_name; |
12989 | dwo_file->comp_dir = comp_dir; | |
192b62ce | 12990 | dwo_file->dbfd = dbfd.release (); |
3019eac3 | 12991 | |
192b62ce TT |
12992 | bfd_map_over_sections (dwo_file->dbfd, dwarf2_locate_dwo_sections, |
12993 | &dwo_file->sections); | |
3019eac3 | 12994 | |
ed2dc618 SM |
12995 | create_cus_hash_table (dwarf2_per_objfile, *dwo_file, dwo_file->sections.info, |
12996 | dwo_file->cus); | |
3019eac3 | 12997 | |
263db9a1 | 12998 | create_debug_types_hash_table (dwarf2_per_objfile, dwo_file.get (), |
ed2dc618 | 12999 | dwo_file->sections.types, dwo_file->tus); |
3019eac3 | 13000 | |
b4f54984 | 13001 | if (dwarf_read_debug) |
80626a55 DE |
13002 | fprintf_unfiltered (gdb_stdlog, "DWO file found: %s\n", dwo_name); |
13003 | ||
263db9a1 | 13004 | return dwo_file.release (); |
3019eac3 DE |
13005 | } |
13006 | ||
80626a55 | 13007 | /* This function is mapped across the sections and remembers the offset and |
73869dc2 DE |
13008 | size of each of the DWP debugging sections common to version 1 and 2 that |
13009 | we are interested in. */ | |
3019eac3 | 13010 | |
80626a55 | 13011 | static void |
73869dc2 DE |
13012 | dwarf2_locate_common_dwp_sections (bfd *abfd, asection *sectp, |
13013 | void *dwp_file_ptr) | |
3019eac3 | 13014 | { |
9a3c8263 | 13015 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
80626a55 DE |
13016 | const struct dwop_section_names *names = &dwop_section_names; |
13017 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
3019eac3 | 13018 | |
80626a55 | 13019 | /* Record the ELF section number for later lookup: this is what the |
73869dc2 | 13020 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ |
80626a55 DE |
13021 | gdb_assert (elf_section_nr < dwp_file->num_sections); |
13022 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
3019eac3 | 13023 | |
80626a55 DE |
13024 | /* Look for specific sections that we need. */ |
13025 | if (section_is_p (sectp->name, &names->str_dwo)) | |
13026 | { | |
049412e3 | 13027 | dwp_file->sections.str.s.section = sectp; |
80626a55 DE |
13028 | dwp_file->sections.str.size = bfd_get_section_size (sectp); |
13029 | } | |
13030 | else if (section_is_p (sectp->name, &names->cu_index)) | |
13031 | { | |
049412e3 | 13032 | dwp_file->sections.cu_index.s.section = sectp; |
80626a55 DE |
13033 | dwp_file->sections.cu_index.size = bfd_get_section_size (sectp); |
13034 | } | |
13035 | else if (section_is_p (sectp->name, &names->tu_index)) | |
13036 | { | |
049412e3 | 13037 | dwp_file->sections.tu_index.s.section = sectp; |
80626a55 DE |
13038 | dwp_file->sections.tu_index.size = bfd_get_section_size (sectp); |
13039 | } | |
13040 | } | |
3019eac3 | 13041 | |
73869dc2 DE |
13042 | /* This function is mapped across the sections and remembers the offset and |
13043 | size of each of the DWP version 2 debugging sections that we are interested | |
13044 | in. This is split into a separate function because we don't know if we | |
13045 | have version 1 or 2 until we parse the cu_index/tu_index sections. */ | |
13046 | ||
13047 | static void | |
13048 | dwarf2_locate_v2_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
13049 | { | |
9a3c8263 | 13050 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
73869dc2 DE |
13051 | const struct dwop_section_names *names = &dwop_section_names; |
13052 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
13053 | ||
13054 | /* Record the ELF section number for later lookup: this is what the | |
13055 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
13056 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
13057 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
13058 | ||
13059 | /* Look for specific sections that we need. */ | |
13060 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
13061 | { | |
049412e3 | 13062 | dwp_file->sections.abbrev.s.section = sectp; |
73869dc2 DE |
13063 | dwp_file->sections.abbrev.size = bfd_get_section_size (sectp); |
13064 | } | |
13065 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
13066 | { | |
049412e3 | 13067 | dwp_file->sections.info.s.section = sectp; |
73869dc2 DE |
13068 | dwp_file->sections.info.size = bfd_get_section_size (sectp); |
13069 | } | |
13070 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
13071 | { | |
049412e3 | 13072 | dwp_file->sections.line.s.section = sectp; |
73869dc2 DE |
13073 | dwp_file->sections.line.size = bfd_get_section_size (sectp); |
13074 | } | |
13075 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
13076 | { | |
049412e3 | 13077 | dwp_file->sections.loc.s.section = sectp; |
73869dc2 DE |
13078 | dwp_file->sections.loc.size = bfd_get_section_size (sectp); |
13079 | } | |
13080 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
13081 | { | |
049412e3 | 13082 | dwp_file->sections.macinfo.s.section = sectp; |
73869dc2 DE |
13083 | dwp_file->sections.macinfo.size = bfd_get_section_size (sectp); |
13084 | } | |
13085 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
13086 | { | |
049412e3 | 13087 | dwp_file->sections.macro.s.section = sectp; |
73869dc2 DE |
13088 | dwp_file->sections.macro.size = bfd_get_section_size (sectp); |
13089 | } | |
13090 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
13091 | { | |
049412e3 | 13092 | dwp_file->sections.str_offsets.s.section = sectp; |
73869dc2 DE |
13093 | dwp_file->sections.str_offsets.size = bfd_get_section_size (sectp); |
13094 | } | |
13095 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
13096 | { | |
049412e3 | 13097 | dwp_file->sections.types.s.section = sectp; |
73869dc2 DE |
13098 | dwp_file->sections.types.size = bfd_get_section_size (sectp); |
13099 | } | |
13100 | } | |
13101 | ||
80626a55 | 13102 | /* Hash function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13103 | |
80626a55 DE |
13104 | static hashval_t |
13105 | hash_dwp_loaded_cutus (const void *item) | |
13106 | { | |
9a3c8263 | 13107 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 | 13108 | |
80626a55 DE |
13109 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
13110 | return dwo_unit->signature; | |
3019eac3 DE |
13111 | } |
13112 | ||
80626a55 | 13113 | /* Equality function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13114 | |
80626a55 DE |
13115 | static int |
13116 | eq_dwp_loaded_cutus (const void *a, const void *b) | |
3019eac3 | 13117 | { |
9a3c8263 SM |
13118 | const struct dwo_unit *dua = (const struct dwo_unit *) a; |
13119 | const struct dwo_unit *dub = (const struct dwo_unit *) b; | |
3019eac3 | 13120 | |
80626a55 DE |
13121 | return dua->signature == dub->signature; |
13122 | } | |
3019eac3 | 13123 | |
80626a55 | 13124 | /* Allocate a hash table for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13125 | |
80626a55 DE |
13126 | static htab_t |
13127 | allocate_dwp_loaded_cutus_table (struct objfile *objfile) | |
13128 | { | |
13129 | return htab_create_alloc_ex (3, | |
13130 | hash_dwp_loaded_cutus, | |
13131 | eq_dwp_loaded_cutus, | |
13132 | NULL, | |
13133 | &objfile->objfile_obstack, | |
13134 | hashtab_obstack_allocate, | |
13135 | dummy_obstack_deallocate); | |
13136 | } | |
3019eac3 | 13137 | |
ab5088bf DE |
13138 | /* Try to open DWP file FILE_NAME. |
13139 | The result is the bfd handle of the file. | |
13140 | If there is a problem finding or opening the file, return NULL. | |
13141 | Upon success, the canonicalized path of the file is stored in the bfd, | |
13142 | same as symfile_bfd_open. */ | |
13143 | ||
192b62ce | 13144 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
13145 | open_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
13146 | const char *file_name) | |
ab5088bf | 13147 | { |
ed2dc618 SM |
13148 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (dwarf2_per_objfile, file_name, |
13149 | 1 /*is_dwp*/, | |
192b62ce | 13150 | 1 /*search_cwd*/)); |
6ac97d4c DE |
13151 | if (abfd != NULL) |
13152 | return abfd; | |
13153 | ||
13154 | /* Work around upstream bug 15652. | |
13155 | http://sourceware.org/bugzilla/show_bug.cgi?id=15652 | |
13156 | [Whether that's a "bug" is debatable, but it is getting in our way.] | |
13157 | We have no real idea where the dwp file is, because gdb's realpath-ing | |
13158 | of the executable's path may have discarded the needed info. | |
13159 | [IWBN if the dwp file name was recorded in the executable, akin to | |
13160 | .gnu_debuglink, but that doesn't exist yet.] | |
13161 | Strip the directory from FILE_NAME and search again. */ | |
13162 | if (*debug_file_directory != '\0') | |
13163 | { | |
13164 | /* Don't implicitly search the current directory here. | |
13165 | If the user wants to search "." to handle this case, | |
13166 | it must be added to debug-file-directory. */ | |
ed2dc618 SM |
13167 | return try_open_dwop_file (dwarf2_per_objfile, |
13168 | lbasename (file_name), 1 /*is_dwp*/, | |
6ac97d4c DE |
13169 | 0 /*search_cwd*/); |
13170 | } | |
13171 | ||
13172 | return NULL; | |
ab5088bf DE |
13173 | } |
13174 | ||
80626a55 DE |
13175 | /* Initialize the use of the DWP file for the current objfile. |
13176 | By convention the name of the DWP file is ${objfile}.dwp. | |
13177 | The result is NULL if it can't be found. */ | |
a766d390 | 13178 | |
400174b1 | 13179 | static std::unique_ptr<struct dwp_file> |
ed2dc618 | 13180 | open_and_init_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
80626a55 DE |
13181 | { |
13182 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
80626a55 | 13183 | |
82bf32bc JK |
13184 | /* Try to find first .dwp for the binary file before any symbolic links |
13185 | resolving. */ | |
6c447423 DE |
13186 | |
13187 | /* If the objfile is a debug file, find the name of the real binary | |
13188 | file and get the name of dwp file from there. */ | |
d721ba37 | 13189 | std::string dwp_name; |
6c447423 DE |
13190 | if (objfile->separate_debug_objfile_backlink != NULL) |
13191 | { | |
13192 | struct objfile *backlink = objfile->separate_debug_objfile_backlink; | |
13193 | const char *backlink_basename = lbasename (backlink->original_name); | |
6c447423 | 13194 | |
d721ba37 | 13195 | dwp_name = ldirname (objfile->original_name) + SLASH_STRING + backlink_basename; |
6c447423 DE |
13196 | } |
13197 | else | |
d721ba37 PA |
13198 | dwp_name = objfile->original_name; |
13199 | ||
13200 | dwp_name += ".dwp"; | |
80626a55 | 13201 | |
ed2dc618 | 13202 | gdb_bfd_ref_ptr dbfd (open_dwp_file (dwarf2_per_objfile, dwp_name.c_str ())); |
82bf32bc JK |
13203 | if (dbfd == NULL |
13204 | && strcmp (objfile->original_name, objfile_name (objfile)) != 0) | |
13205 | { | |
13206 | /* Try to find .dwp for the binary file after gdb_realpath resolving. */ | |
d721ba37 PA |
13207 | dwp_name = objfile_name (objfile); |
13208 | dwp_name += ".dwp"; | |
ed2dc618 | 13209 | dbfd = open_dwp_file (dwarf2_per_objfile, dwp_name.c_str ()); |
82bf32bc JK |
13210 | } |
13211 | ||
80626a55 DE |
13212 | if (dbfd == NULL) |
13213 | { | |
b4f54984 | 13214 | if (dwarf_read_debug) |
d721ba37 | 13215 | fprintf_unfiltered (gdb_stdlog, "DWP file not found: %s\n", dwp_name.c_str ()); |
400174b1 | 13216 | return std::unique_ptr<dwp_file> (); |
3019eac3 | 13217 | } |
400174b1 TT |
13218 | |
13219 | const char *name = bfd_get_filename (dbfd.get ()); | |
13220 | std::unique_ptr<struct dwp_file> dwp_file | |
13221 | (new struct dwp_file (name, std::move (dbfd))); | |
c906108c | 13222 | |
80626a55 | 13223 | /* +1: section 0 is unused */ |
192b62ce | 13224 | dwp_file->num_sections = bfd_count_sections (dwp_file->dbfd) + 1; |
80626a55 DE |
13225 | dwp_file->elf_sections = |
13226 | OBSTACK_CALLOC (&objfile->objfile_obstack, | |
13227 | dwp_file->num_sections, asection *); | |
13228 | ||
400174b1 TT |
13229 | bfd_map_over_sections (dwp_file->dbfd.get (), |
13230 | dwarf2_locate_common_dwp_sections, | |
13231 | dwp_file.get ()); | |
80626a55 | 13232 | |
400174b1 TT |
13233 | dwp_file->cus = create_dwp_hash_table (dwarf2_per_objfile, dwp_file.get (), |
13234 | 0); | |
80626a55 | 13235 | |
400174b1 TT |
13236 | dwp_file->tus = create_dwp_hash_table (dwarf2_per_objfile, dwp_file.get (), |
13237 | 1); | |
80626a55 | 13238 | |
73869dc2 | 13239 | /* The DWP file version is stored in the hash table. Oh well. */ |
08302ed2 DE |
13240 | if (dwp_file->cus && dwp_file->tus |
13241 | && dwp_file->cus->version != dwp_file->tus->version) | |
73869dc2 DE |
13242 | { |
13243 | /* Technically speaking, we should try to limp along, but this is | |
fbcbc3fd | 13244 | pretty bizarre. We use pulongest here because that's the established |
4d65956b | 13245 | portability solution (e.g, we cannot use %u for uint32_t). */ |
fbcbc3fd DE |
13246 | error (_("Dwarf Error: DWP file CU version %s doesn't match" |
13247 | " TU version %s [in DWP file %s]"), | |
13248 | pulongest (dwp_file->cus->version), | |
d721ba37 | 13249 | pulongest (dwp_file->tus->version), dwp_name.c_str ()); |
73869dc2 | 13250 | } |
08302ed2 DE |
13251 | |
13252 | if (dwp_file->cus) | |
13253 | dwp_file->version = dwp_file->cus->version; | |
13254 | else if (dwp_file->tus) | |
13255 | dwp_file->version = dwp_file->tus->version; | |
13256 | else | |
13257 | dwp_file->version = 2; | |
73869dc2 DE |
13258 | |
13259 | if (dwp_file->version == 2) | |
400174b1 TT |
13260 | bfd_map_over_sections (dwp_file->dbfd.get (), |
13261 | dwarf2_locate_v2_dwp_sections, | |
13262 | dwp_file.get ()); | |
73869dc2 | 13263 | |
19ac8c2e DE |
13264 | dwp_file->loaded_cus = allocate_dwp_loaded_cutus_table (objfile); |
13265 | dwp_file->loaded_tus = allocate_dwp_loaded_cutus_table (objfile); | |
80626a55 | 13266 | |
b4f54984 | 13267 | if (dwarf_read_debug) |
80626a55 DE |
13268 | { |
13269 | fprintf_unfiltered (gdb_stdlog, "DWP file found: %s\n", dwp_file->name); | |
13270 | fprintf_unfiltered (gdb_stdlog, | |
21aa081e PA |
13271 | " %s CUs, %s TUs\n", |
13272 | pulongest (dwp_file->cus ? dwp_file->cus->nr_units : 0), | |
13273 | pulongest (dwp_file->tus ? dwp_file->tus->nr_units : 0)); | |
80626a55 DE |
13274 | } |
13275 | ||
13276 | return dwp_file; | |
3019eac3 | 13277 | } |
c906108c | 13278 | |
ab5088bf DE |
13279 | /* Wrapper around open_and_init_dwp_file, only open it once. */ |
13280 | ||
13281 | static struct dwp_file * | |
ed2dc618 | 13282 | get_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
ab5088bf DE |
13283 | { |
13284 | if (! dwarf2_per_objfile->dwp_checked) | |
13285 | { | |
ed2dc618 SM |
13286 | dwarf2_per_objfile->dwp_file |
13287 | = open_and_init_dwp_file (dwarf2_per_objfile); | |
ab5088bf DE |
13288 | dwarf2_per_objfile->dwp_checked = 1; |
13289 | } | |
400174b1 | 13290 | return dwarf2_per_objfile->dwp_file.get (); |
ab5088bf DE |
13291 | } |
13292 | ||
80626a55 DE |
13293 | /* Subroutine of lookup_dwo_comp_unit, lookup_dwo_type_unit. |
13294 | Look up the CU/TU with signature SIGNATURE, either in DWO file DWO_NAME | |
13295 | or in the DWP file for the objfile, referenced by THIS_UNIT. | |
3019eac3 | 13296 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. |
80626a55 DE |
13297 | IS_DEBUG_TYPES is non-zero if reading a TU, otherwise read a CU. |
13298 | ||
13299 | This is called, for example, when wanting to read a variable with a | |
13300 | complex location. Therefore we don't want to do file i/o for every call. | |
13301 | Therefore we don't want to look for a DWO file on every call. | |
13302 | Therefore we first see if we've already seen SIGNATURE in a DWP file, | |
13303 | then we check if we've already seen DWO_NAME, and only THEN do we check | |
13304 | for a DWO file. | |
13305 | ||
1c658ad5 | 13306 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
80626a55 | 13307 | (dwo_id mismatch or couldn't find the DWO/DWP file). */ |
debd256d | 13308 | |
3019eac3 | 13309 | static struct dwo_unit * |
80626a55 DE |
13310 | lookup_dwo_cutu (struct dwarf2_per_cu_data *this_unit, |
13311 | const char *dwo_name, const char *comp_dir, | |
13312 | ULONGEST signature, int is_debug_types) | |
3019eac3 | 13313 | { |
ed2dc618 | 13314 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_unit->dwarf2_per_objfile; |
3019eac3 | 13315 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
80626a55 DE |
13316 | const char *kind = is_debug_types ? "TU" : "CU"; |
13317 | void **dwo_file_slot; | |
3019eac3 | 13318 | struct dwo_file *dwo_file; |
80626a55 | 13319 | struct dwp_file *dwp_file; |
cb1df416 | 13320 | |
6a506a2d DE |
13321 | /* First see if there's a DWP file. |
13322 | If we have a DWP file but didn't find the DWO inside it, don't | |
13323 | look for the original DWO file. It makes gdb behave differently | |
13324 | depending on whether one is debugging in the build tree. */ | |
cf2c3c16 | 13325 | |
ed2dc618 | 13326 | dwp_file = get_dwp_file (dwarf2_per_objfile); |
80626a55 | 13327 | if (dwp_file != NULL) |
cf2c3c16 | 13328 | { |
80626a55 DE |
13329 | const struct dwp_hash_table *dwp_htab = |
13330 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
13331 | ||
13332 | if (dwp_htab != NULL) | |
13333 | { | |
13334 | struct dwo_unit *dwo_cutu = | |
ed2dc618 | 13335 | lookup_dwo_unit_in_dwp (dwarf2_per_objfile, dwp_file, comp_dir, |
57d63ce2 | 13336 | signature, is_debug_types); |
80626a55 DE |
13337 | |
13338 | if (dwo_cutu != NULL) | |
13339 | { | |
b4f54984 | 13340 | if (dwarf_read_debug) |
80626a55 DE |
13341 | { |
13342 | fprintf_unfiltered (gdb_stdlog, | |
13343 | "Virtual DWO %s %s found: @%s\n", | |
13344 | kind, hex_string (signature), | |
13345 | host_address_to_string (dwo_cutu)); | |
13346 | } | |
13347 | return dwo_cutu; | |
13348 | } | |
13349 | } | |
13350 | } | |
6a506a2d | 13351 | else |
80626a55 | 13352 | { |
6a506a2d | 13353 | /* No DWP file, look for the DWO file. */ |
80626a55 | 13354 | |
ed2dc618 SM |
13355 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
13356 | dwo_name, comp_dir); | |
6a506a2d | 13357 | if (*dwo_file_slot == NULL) |
80626a55 | 13358 | { |
6a506a2d DE |
13359 | /* Read in the file and build a table of the CUs/TUs it contains. */ |
13360 | *dwo_file_slot = open_and_init_dwo_file (this_unit, dwo_name, comp_dir); | |
19c3d4c9 | 13361 | } |
6a506a2d | 13362 | /* NOTE: This will be NULL if unable to open the file. */ |
9a3c8263 | 13363 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
3019eac3 | 13364 | |
6a506a2d | 13365 | if (dwo_file != NULL) |
19c3d4c9 | 13366 | { |
6a506a2d DE |
13367 | struct dwo_unit *dwo_cutu = NULL; |
13368 | ||
13369 | if (is_debug_types && dwo_file->tus) | |
13370 | { | |
13371 | struct dwo_unit find_dwo_cutu; | |
13372 | ||
13373 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
13374 | find_dwo_cutu.signature = signature; | |
9a3c8263 SM |
13375 | dwo_cutu |
13376 | = (struct dwo_unit *) htab_find (dwo_file->tus, &find_dwo_cutu); | |
6a506a2d | 13377 | } |
33c5cd75 | 13378 | else if (!is_debug_types && dwo_file->cus) |
80626a55 | 13379 | { |
33c5cd75 DB |
13380 | struct dwo_unit find_dwo_cutu; |
13381 | ||
13382 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
13383 | find_dwo_cutu.signature = signature; | |
13384 | dwo_cutu = (struct dwo_unit *)htab_find (dwo_file->cus, | |
13385 | &find_dwo_cutu); | |
6a506a2d DE |
13386 | } |
13387 | ||
13388 | if (dwo_cutu != NULL) | |
13389 | { | |
b4f54984 | 13390 | if (dwarf_read_debug) |
6a506a2d DE |
13391 | { |
13392 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) found: @%s\n", | |
13393 | kind, dwo_name, hex_string (signature), | |
13394 | host_address_to_string (dwo_cutu)); | |
13395 | } | |
13396 | return dwo_cutu; | |
80626a55 DE |
13397 | } |
13398 | } | |
2e276125 | 13399 | } |
9cdd5dbd | 13400 | |
80626a55 DE |
13401 | /* We didn't find it. This could mean a dwo_id mismatch, or |
13402 | someone deleted the DWO/DWP file, or the search path isn't set up | |
13403 | correctly to find the file. */ | |
13404 | ||
b4f54984 | 13405 | if (dwarf_read_debug) |
80626a55 DE |
13406 | { |
13407 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) not found\n", | |
13408 | kind, dwo_name, hex_string (signature)); | |
13409 | } | |
3019eac3 | 13410 | |
6656a72d DE |
13411 | /* This is a warning and not a complaint because it can be caused by |
13412 | pilot error (e.g., user accidentally deleting the DWO). */ | |
43942612 DE |
13413 | { |
13414 | /* Print the name of the DWP file if we looked there, helps the user | |
13415 | better diagnose the problem. */ | |
791afaa2 | 13416 | std::string dwp_text; |
43942612 DE |
13417 | |
13418 | if (dwp_file != NULL) | |
791afaa2 TT |
13419 | dwp_text = string_printf (" [in DWP file %s]", |
13420 | lbasename (dwp_file->name)); | |
43942612 | 13421 | |
9d8780f0 | 13422 | warning (_("Could not find DWO %s %s(%s)%s referenced by %s at offset %s" |
43942612 DE |
13423 | " [in module %s]"), |
13424 | kind, dwo_name, hex_string (signature), | |
791afaa2 | 13425 | dwp_text.c_str (), |
43942612 | 13426 | this_unit->is_debug_types ? "TU" : "CU", |
9d8780f0 | 13427 | sect_offset_str (this_unit->sect_off), objfile_name (objfile)); |
43942612 | 13428 | } |
3019eac3 | 13429 | return NULL; |
5fb290d7 DJ |
13430 | } |
13431 | ||
80626a55 DE |
13432 | /* Lookup the DWO CU DWO_NAME/SIGNATURE referenced from THIS_CU. |
13433 | See lookup_dwo_cutu_unit for details. */ | |
13434 | ||
13435 | static struct dwo_unit * | |
13436 | lookup_dwo_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
13437 | const char *dwo_name, const char *comp_dir, | |
13438 | ULONGEST signature) | |
13439 | { | |
13440 | return lookup_dwo_cutu (this_cu, dwo_name, comp_dir, signature, 0); | |
13441 | } | |
13442 | ||
13443 | /* Lookup the DWO TU DWO_NAME/SIGNATURE referenced from THIS_TU. | |
13444 | See lookup_dwo_cutu_unit for details. */ | |
13445 | ||
13446 | static struct dwo_unit * | |
13447 | lookup_dwo_type_unit (struct signatured_type *this_tu, | |
13448 | const char *dwo_name, const char *comp_dir) | |
13449 | { | |
13450 | return lookup_dwo_cutu (&this_tu->per_cu, dwo_name, comp_dir, this_tu->signature, 1); | |
13451 | } | |
13452 | ||
89e63ee4 DE |
13453 | /* Traversal function for queue_and_load_all_dwo_tus. */ |
13454 | ||
13455 | static int | |
13456 | queue_and_load_dwo_tu (void **slot, void *info) | |
13457 | { | |
13458 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
13459 | struct dwarf2_per_cu_data *per_cu = (struct dwarf2_per_cu_data *) info; | |
13460 | ULONGEST signature = dwo_unit->signature; | |
13461 | struct signatured_type *sig_type = | |
13462 | lookup_dwo_signatured_type (per_cu->cu, signature); | |
13463 | ||
13464 | if (sig_type != NULL) | |
13465 | { | |
13466 | struct dwarf2_per_cu_data *sig_cu = &sig_type->per_cu; | |
13467 | ||
13468 | /* We pass NULL for DEPENDENT_CU because we don't yet know if there's | |
13469 | a real dependency of PER_CU on SIG_TYPE. That is detected later | |
13470 | while processing PER_CU. */ | |
13471 | if (maybe_queue_comp_unit (NULL, sig_cu, per_cu->cu->language)) | |
13472 | load_full_type_unit (sig_cu); | |
13473 | VEC_safe_push (dwarf2_per_cu_ptr, per_cu->imported_symtabs, sig_cu); | |
13474 | } | |
13475 | ||
13476 | return 1; | |
13477 | } | |
13478 | ||
13479 | /* Queue all TUs contained in the DWO of PER_CU to be read in. | |
13480 | The DWO may have the only definition of the type, though it may not be | |
13481 | referenced anywhere in PER_CU. Thus we have to load *all* its TUs. | |
13482 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
13483 | ||
13484 | static void | |
13485 | queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *per_cu) | |
13486 | { | |
13487 | struct dwo_unit *dwo_unit; | |
13488 | struct dwo_file *dwo_file; | |
13489 | ||
13490 | gdb_assert (!per_cu->is_debug_types); | |
ed2dc618 | 13491 | gdb_assert (get_dwp_file (per_cu->dwarf2_per_objfile) == NULL); |
89e63ee4 DE |
13492 | gdb_assert (per_cu->cu != NULL); |
13493 | ||
13494 | dwo_unit = per_cu->cu->dwo_unit; | |
13495 | gdb_assert (dwo_unit != NULL); | |
13496 | ||
13497 | dwo_file = dwo_unit->dwo_file; | |
13498 | if (dwo_file->tus != NULL) | |
13499 | htab_traverse_noresize (dwo_file->tus, queue_and_load_dwo_tu, per_cu); | |
13500 | } | |
13501 | ||
3019eac3 | 13502 | /* Free all resources associated with DWO_FILE. |
5dafb3d1 | 13503 | Close the DWO file and munmap the sections. */ |
348e048f DE |
13504 | |
13505 | static void | |
5dafb3d1 | 13506 | free_dwo_file (struct dwo_file *dwo_file) |
348e048f | 13507 | { |
5c6fa7ab | 13508 | /* Note: dbfd is NULL for virtual DWO files. */ |
80626a55 | 13509 | gdb_bfd_unref (dwo_file->dbfd); |
348e048f | 13510 | |
3019eac3 DE |
13511 | VEC_free (dwarf2_section_info_def, dwo_file->sections.types); |
13512 | } | |
348e048f | 13513 | |
3019eac3 | 13514 | /* Traversal function for free_dwo_files. */ |
2ab95328 | 13515 | |
3019eac3 DE |
13516 | static int |
13517 | free_dwo_file_from_slot (void **slot, void *info) | |
13518 | { | |
13519 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
348e048f | 13520 | |
5dafb3d1 | 13521 | free_dwo_file (dwo_file); |
348e048f | 13522 | |
3019eac3 DE |
13523 | return 1; |
13524 | } | |
348e048f | 13525 | |
3019eac3 | 13526 | /* Free all resources associated with DWO_FILES. */ |
348e048f | 13527 | |
3019eac3 DE |
13528 | static void |
13529 | free_dwo_files (htab_t dwo_files, struct objfile *objfile) | |
13530 | { | |
13531 | htab_traverse_noresize (dwo_files, free_dwo_file_from_slot, objfile); | |
348e048f | 13532 | } |
3019eac3 DE |
13533 | \f |
13534 | /* Read in various DIEs. */ | |
348e048f | 13535 | |
d389af10 | 13536 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). |
3e43a32a MS |
13537 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
13538 | already referenced by DW_AT_abstract_origin from the children of the | |
13539 | current DIE. */ | |
d389af10 JK |
13540 | |
13541 | static void | |
13542 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
13543 | { | |
13544 | struct die_info *child_die; | |
791afaa2 | 13545 | sect_offset *offsetp; |
d389af10 JK |
13546 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
13547 | struct die_info *origin_die; | |
13548 | /* Iterator of the ORIGIN_DIE children. */ | |
13549 | struct die_info *origin_child_die; | |
d389af10 | 13550 | struct attribute *attr; |
cd02d79d PA |
13551 | struct dwarf2_cu *origin_cu; |
13552 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
13553 | |
13554 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13555 | if (!attr) | |
13556 | return; | |
13557 | ||
cd02d79d PA |
13558 | /* Note that following die references may follow to a die in a |
13559 | different cu. */ | |
13560 | ||
13561 | origin_cu = cu; | |
13562 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
13563 | ||
13564 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
13565 | symbols in. */ | |
13566 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
13567 | origin_cu->list_in_scope = cu->list_in_scope; | |
13568 | ||
edb3359d DJ |
13569 | if (die->tag != origin_die->tag |
13570 | && !(die->tag == DW_TAG_inlined_subroutine | |
13571 | && origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 13572 | complaint (_("DIE %s and its abstract origin %s have different tags"), |
9d8780f0 SM |
13573 | sect_offset_str (die->sect_off), |
13574 | sect_offset_str (origin_die->sect_off)); | |
d389af10 | 13575 | |
791afaa2 | 13576 | std::vector<sect_offset> offsets; |
d389af10 | 13577 | |
3ea89b92 PMR |
13578 | for (child_die = die->child; |
13579 | child_die && child_die->tag; | |
13580 | child_die = sibling_die (child_die)) | |
13581 | { | |
13582 | struct die_info *child_origin_die; | |
13583 | struct dwarf2_cu *child_origin_cu; | |
13584 | ||
13585 | /* We are trying to process concrete instance entries: | |
216f72a1 | 13586 | DW_TAG_call_site DIEs indeed have a DW_AT_abstract_origin tag, but |
3ea89b92 PMR |
13587 | it's not relevant to our analysis here. i.e. detecting DIEs that are |
13588 | present in the abstract instance but not referenced in the concrete | |
13589 | one. */ | |
216f72a1 JK |
13590 | if (child_die->tag == DW_TAG_call_site |
13591 | || child_die->tag == DW_TAG_GNU_call_site) | |
3ea89b92 PMR |
13592 | continue; |
13593 | ||
c38f313d DJ |
13594 | /* For each CHILD_DIE, find the corresponding child of |
13595 | ORIGIN_DIE. If there is more than one layer of | |
13596 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
13597 | but GCC versions at least through 4.4 generate this (GCC PR | |
13598 | 40573). */ | |
3ea89b92 PMR |
13599 | child_origin_die = child_die; |
13600 | child_origin_cu = cu; | |
c38f313d DJ |
13601 | while (1) |
13602 | { | |
cd02d79d PA |
13603 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
13604 | child_origin_cu); | |
c38f313d DJ |
13605 | if (attr == NULL) |
13606 | break; | |
cd02d79d PA |
13607 | child_origin_die = follow_die_ref (child_origin_die, attr, |
13608 | &child_origin_cu); | |
c38f313d DJ |
13609 | } |
13610 | ||
d389af10 JK |
13611 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
13612 | counterpart may exist. */ | |
c38f313d | 13613 | if (child_origin_die != child_die) |
d389af10 | 13614 | { |
edb3359d DJ |
13615 | if (child_die->tag != child_origin_die->tag |
13616 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
13617 | && child_origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 13618 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 13619 | "different tags"), |
9d8780f0 SM |
13620 | sect_offset_str (child_die->sect_off), |
13621 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 13622 | if (child_origin_die->parent != origin_die) |
b98664d3 | 13623 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 13624 | "different parents"), |
9d8780f0 SM |
13625 | sect_offset_str (child_die->sect_off), |
13626 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 13627 | else |
791afaa2 | 13628 | offsets.push_back (child_origin_die->sect_off); |
d389af10 | 13629 | } |
d389af10 | 13630 | } |
791afaa2 TT |
13631 | std::sort (offsets.begin (), offsets.end ()); |
13632 | sect_offset *offsets_end = offsets.data () + offsets.size (); | |
13633 | for (offsetp = offsets.data () + 1; offsetp < offsets_end; offsetp++) | |
9c541725 | 13634 | if (offsetp[-1] == *offsetp) |
b98664d3 | 13635 | complaint (_("Multiple children of DIE %s refer " |
9d8780f0 SM |
13636 | "to DIE %s as their abstract origin"), |
13637 | sect_offset_str (die->sect_off), sect_offset_str (*offsetp)); | |
d389af10 | 13638 | |
791afaa2 | 13639 | offsetp = offsets.data (); |
d389af10 JK |
13640 | origin_child_die = origin_die->child; |
13641 | while (origin_child_die && origin_child_die->tag) | |
13642 | { | |
13643 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 | 13644 | while (offsetp < offsets_end |
9c541725 | 13645 | && *offsetp < origin_child_die->sect_off) |
d389af10 | 13646 | offsetp++; |
b64f50a1 | 13647 | if (offsetp >= offsets_end |
9c541725 | 13648 | || *offsetp > origin_child_die->sect_off) |
d389af10 | 13649 | { |
adde2bff DE |
13650 | /* Found that ORIGIN_CHILD_DIE is really not referenced. |
13651 | Check whether we're already processing ORIGIN_CHILD_DIE. | |
13652 | This can happen with mutually referenced abstract_origins. | |
13653 | PR 16581. */ | |
13654 | if (!origin_child_die->in_process) | |
13655 | process_die (origin_child_die, origin_cu); | |
d389af10 JK |
13656 | } |
13657 | origin_child_die = sibling_die (origin_child_die); | |
13658 | } | |
cd02d79d | 13659 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
d389af10 JK |
13660 | } |
13661 | ||
c906108c | 13662 | static void |
e7c27a73 | 13663 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13664 | { |
518817b3 | 13665 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 13666 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
fe978cb0 | 13667 | struct context_stack *newobj; |
c906108c SS |
13668 | CORE_ADDR lowpc; |
13669 | CORE_ADDR highpc; | |
13670 | struct die_info *child_die; | |
edb3359d | 13671 | struct attribute *attr, *call_line, *call_file; |
15d034d0 | 13672 | const char *name; |
e142c38c | 13673 | CORE_ADDR baseaddr; |
801e3a5b | 13674 | struct block *block; |
edb3359d | 13675 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
2f4732b0 | 13676 | std::vector<struct symbol *> template_args; |
34eaf542 | 13677 | struct template_symbol *templ_func = NULL; |
edb3359d DJ |
13678 | |
13679 | if (inlined_func) | |
13680 | { | |
13681 | /* If we do not have call site information, we can't show the | |
13682 | caller of this inlined function. That's too confusing, so | |
13683 | only use the scope for local variables. */ | |
13684 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
13685 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
13686 | if (call_line == NULL || call_file == NULL) | |
13687 | { | |
13688 | read_lexical_block_scope (die, cu); | |
13689 | return; | |
13690 | } | |
13691 | } | |
c906108c | 13692 | |
e142c38c DJ |
13693 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
13694 | ||
94af9270 | 13695 | name = dwarf2_name (die, cu); |
c906108c | 13696 | |
e8d05480 JB |
13697 | /* Ignore functions with missing or empty names. These are actually |
13698 | illegal according to the DWARF standard. */ | |
13699 | if (name == NULL) | |
13700 | { | |
b98664d3 | 13701 | complaint (_("missing name for subprogram DIE at %s"), |
9d8780f0 | 13702 | sect_offset_str (die->sect_off)); |
e8d05480 JB |
13703 | return; |
13704 | } | |
13705 | ||
13706 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
3a2b436a | 13707 | if (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL) |
e385593e | 13708 | <= PC_BOUNDS_INVALID) |
e8d05480 | 13709 | { |
ae4d0c03 PM |
13710 | attr = dwarf2_attr (die, DW_AT_external, cu); |
13711 | if (!attr || !DW_UNSND (attr)) | |
b98664d3 | 13712 | complaint (_("cannot get low and high bounds " |
9d8780f0 SM |
13713 | "for subprogram DIE at %s"), |
13714 | sect_offset_str (die->sect_off)); | |
e8d05480 JB |
13715 | return; |
13716 | } | |
c906108c | 13717 | |
3e29f34a MR |
13718 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13719 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13720 | |
34eaf542 TT |
13721 | /* If we have any template arguments, then we must allocate a |
13722 | different sort of symbol. */ | |
13723 | for (child_die = die->child; child_die; child_die = sibling_die (child_die)) | |
13724 | { | |
13725 | if (child_die->tag == DW_TAG_template_type_param | |
13726 | || child_die->tag == DW_TAG_template_value_param) | |
13727 | { | |
e623cf5d | 13728 | templ_func = allocate_template_symbol (objfile); |
cf724bc9 | 13729 | templ_func->subclass = SYMBOL_TEMPLATE; |
34eaf542 TT |
13730 | break; |
13731 | } | |
13732 | } | |
13733 | ||
804d2729 | 13734 | newobj = cu->builder->push_context (0, lowpc); |
5e2db402 TT |
13735 | newobj->name = new_symbol (die, read_type_die (die, cu), cu, |
13736 | (struct symbol *) templ_func); | |
4c2df51b | 13737 | |
4cecd739 DJ |
13738 | /* If there is a location expression for DW_AT_frame_base, record |
13739 | it. */ | |
e142c38c | 13740 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 13741 | if (attr) |
fe978cb0 | 13742 | dwarf2_symbol_mark_computed (attr, newobj->name, cu, 1); |
4c2df51b | 13743 | |
63e43d3a PMR |
13744 | /* If there is a location for the static link, record it. */ |
13745 | newobj->static_link = NULL; | |
13746 | attr = dwarf2_attr (die, DW_AT_static_link, cu); | |
13747 | if (attr) | |
13748 | { | |
224c3ddb SM |
13749 | newobj->static_link |
13750 | = XOBNEW (&objfile->objfile_obstack, struct dynamic_prop); | |
63e43d3a PMR |
13751 | attr_to_dynamic_prop (attr, die, cu, newobj->static_link); |
13752 | } | |
13753 | ||
804d2729 | 13754 | cu->list_in_scope = cu->builder->get_local_symbols (); |
c906108c | 13755 | |
639d11d3 | 13756 | if (die->child != NULL) |
c906108c | 13757 | { |
639d11d3 | 13758 | child_die = die->child; |
c906108c SS |
13759 | while (child_die && child_die->tag) |
13760 | { | |
34eaf542 TT |
13761 | if (child_die->tag == DW_TAG_template_type_param |
13762 | || child_die->tag == DW_TAG_template_value_param) | |
13763 | { | |
13764 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
13765 | ||
f1078f66 | 13766 | if (arg != NULL) |
2f4732b0 | 13767 | template_args.push_back (arg); |
34eaf542 TT |
13768 | } |
13769 | else | |
13770 | process_die (child_die, cu); | |
c906108c SS |
13771 | child_die = sibling_die (child_die); |
13772 | } | |
13773 | } | |
13774 | ||
d389af10 JK |
13775 | inherit_abstract_dies (die, cu); |
13776 | ||
4a811a97 UW |
13777 | /* If we have a DW_AT_specification, we might need to import using |
13778 | directives from the context of the specification DIE. See the | |
13779 | comment in determine_prefix. */ | |
13780 | if (cu->language == language_cplus | |
13781 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
13782 | { | |
13783 | struct dwarf2_cu *spec_cu = cu; | |
13784 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
13785 | ||
13786 | while (spec_die) | |
13787 | { | |
13788 | child_die = spec_die->child; | |
13789 | while (child_die && child_die->tag) | |
13790 | { | |
13791 | if (child_die->tag == DW_TAG_imported_module) | |
13792 | process_die (child_die, spec_cu); | |
13793 | child_die = sibling_die (child_die); | |
13794 | } | |
13795 | ||
13796 | /* In some cases, GCC generates specification DIEs that | |
13797 | themselves contain DW_AT_specification attributes. */ | |
13798 | spec_die = die_specification (spec_die, &spec_cu); | |
13799 | } | |
13800 | } | |
13801 | ||
804d2729 | 13802 | struct context_stack cstk = cu->builder->pop_context (); |
c906108c | 13803 | /* Make a block for the local symbols within. */ |
804d2729 TT |
13804 | block = cu->builder->finish_block (cstk.name, cstk.old_blocks, |
13805 | cstk.static_link, lowpc, highpc); | |
801e3a5b | 13806 | |
df8a16a1 | 13807 | /* For C++, set the block's scope. */ |
45280282 IB |
13808 | if ((cu->language == language_cplus |
13809 | || cu->language == language_fortran | |
c44af4eb TT |
13810 | || cu->language == language_d |
13811 | || cu->language == language_rust) | |
4d4ec4e5 | 13812 | && cu->processing_has_namespace_info) |
195a3f6c TT |
13813 | block_set_scope (block, determine_prefix (die, cu), |
13814 | &objfile->objfile_obstack); | |
df8a16a1 | 13815 | |
801e3a5b JB |
13816 | /* If we have address ranges, record them. */ |
13817 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 13818 | |
a60f3166 | 13819 | gdbarch_make_symbol_special (gdbarch, cstk.name, objfile); |
3e29f34a | 13820 | |
34eaf542 | 13821 | /* Attach template arguments to function. */ |
2f4732b0 | 13822 | if (!template_args.empty ()) |
34eaf542 TT |
13823 | { |
13824 | gdb_assert (templ_func != NULL); | |
13825 | ||
2f4732b0 | 13826 | templ_func->n_template_arguments = template_args.size (); |
34eaf542 | 13827 | templ_func->template_arguments |
8d749320 SM |
13828 | = XOBNEWVEC (&objfile->objfile_obstack, struct symbol *, |
13829 | templ_func->n_template_arguments); | |
34eaf542 | 13830 | memcpy (templ_func->template_arguments, |
2f4732b0 | 13831 | template_args.data (), |
34eaf542 | 13832 | (templ_func->n_template_arguments * sizeof (struct symbol *))); |
3e1d3d8c TT |
13833 | |
13834 | /* Make sure that the symtab is set on the new symbols. Even | |
13835 | though they don't appear in this symtab directly, other parts | |
13836 | of gdb assume that symbols do, and this is reasonably | |
13837 | true. */ | |
13838 | for (struct symbol *sym : template_args) | |
13839 | symbol_set_symtab (sym, symbol_symtab (templ_func)); | |
34eaf542 TT |
13840 | } |
13841 | ||
208d8187 JB |
13842 | /* In C++, we can have functions nested inside functions (e.g., when |
13843 | a function declares a class that has methods). This means that | |
13844 | when we finish processing a function scope, we may need to go | |
13845 | back to building a containing block's symbol lists. */ | |
804d2729 TT |
13846 | *cu->builder->get_local_symbols () = cstk.locals; |
13847 | cu->builder->set_local_using_directives (cstk.local_using_directives); | |
208d8187 | 13848 | |
921e78cf JB |
13849 | /* If we've finished processing a top-level function, subsequent |
13850 | symbols go in the file symbol list. */ | |
804d2729 TT |
13851 | if (cu->builder->outermost_context_p ()) |
13852 | cu->list_in_scope = cu->builder->get_file_symbols (); | |
c906108c SS |
13853 | } |
13854 | ||
13855 | /* Process all the DIES contained within a lexical block scope. Start | |
13856 | a new scope, process the dies, and then close the scope. */ | |
13857 | ||
13858 | static void | |
e7c27a73 | 13859 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13860 | { |
518817b3 | 13861 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 13862 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
13863 | CORE_ADDR lowpc, highpc; |
13864 | struct die_info *child_die; | |
e142c38c DJ |
13865 | CORE_ADDR baseaddr; |
13866 | ||
13867 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
13868 | |
13869 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
13870 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
13871 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 13872 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 13873 | describe ranges. */ |
e385593e JK |
13874 | switch (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
13875 | { | |
13876 | case PC_BOUNDS_NOT_PRESENT: | |
13877 | /* DW_TAG_lexical_block has no attributes, process its children as if | |
13878 | there was no wrapping by that DW_TAG_lexical_block. | |
13879 | GCC does no longer produces such DWARF since GCC r224161. */ | |
13880 | for (child_die = die->child; | |
13881 | child_die != NULL && child_die->tag; | |
13882 | child_die = sibling_die (child_die)) | |
13883 | process_die (child_die, cu); | |
13884 | return; | |
13885 | case PC_BOUNDS_INVALID: | |
13886 | return; | |
13887 | } | |
3e29f34a MR |
13888 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13889 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13890 | |
804d2729 | 13891 | cu->builder->push_context (0, lowpc); |
639d11d3 | 13892 | if (die->child != NULL) |
c906108c | 13893 | { |
639d11d3 | 13894 | child_die = die->child; |
c906108c SS |
13895 | while (child_die && child_die->tag) |
13896 | { | |
e7c27a73 | 13897 | process_die (child_die, cu); |
c906108c SS |
13898 | child_die = sibling_die (child_die); |
13899 | } | |
13900 | } | |
3ea89b92 | 13901 | inherit_abstract_dies (die, cu); |
804d2729 | 13902 | struct context_stack cstk = cu->builder->pop_context (); |
c906108c | 13903 | |
804d2729 TT |
13904 | if (*cu->builder->get_local_symbols () != NULL |
13905 | || (*cu->builder->get_local_using_directives ()) != NULL) | |
c906108c | 13906 | { |
801e3a5b | 13907 | struct block *block |
804d2729 TT |
13908 | = cu->builder->finish_block (0, cstk.old_blocks, NULL, |
13909 | cstk.start_addr, highpc); | |
801e3a5b JB |
13910 | |
13911 | /* Note that recording ranges after traversing children, as we | |
13912 | do here, means that recording a parent's ranges entails | |
13913 | walking across all its children's ranges as they appear in | |
13914 | the address map, which is quadratic behavior. | |
13915 | ||
13916 | It would be nicer to record the parent's ranges before | |
13917 | traversing its children, simply overriding whatever you find | |
13918 | there. But since we don't even decide whether to create a | |
13919 | block until after we've traversed its children, that's hard | |
13920 | to do. */ | |
13921 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c | 13922 | } |
804d2729 TT |
13923 | *cu->builder->get_local_symbols () = cstk.locals; |
13924 | cu->builder->set_local_using_directives (cstk.local_using_directives); | |
c906108c SS |
13925 | } |
13926 | ||
216f72a1 | 13927 | /* Read in DW_TAG_call_site and insert it to CU->call_site_htab. */ |
96408a79 SA |
13928 | |
13929 | static void | |
13930 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
13931 | { | |
518817b3 | 13932 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
96408a79 SA |
13933 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
13934 | CORE_ADDR pc, baseaddr; | |
13935 | struct attribute *attr; | |
13936 | struct call_site *call_site, call_site_local; | |
13937 | void **slot; | |
13938 | int nparams; | |
13939 | struct die_info *child_die; | |
13940 | ||
13941 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
13942 | ||
216f72a1 JK |
13943 | attr = dwarf2_attr (die, DW_AT_call_return_pc, cu); |
13944 | if (attr == NULL) | |
13945 | { | |
13946 | /* This was a pre-DWARF-5 GNU extension alias | |
13947 | for DW_AT_call_return_pc. */ | |
13948 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
13949 | } | |
96408a79 SA |
13950 | if (!attr) |
13951 | { | |
b98664d3 | 13952 | complaint (_("missing DW_AT_call_return_pc for DW_TAG_call_site " |
9d8780f0 SM |
13953 | "DIE %s [in module %s]"), |
13954 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13955 | return; |
13956 | } | |
31aa7e4e | 13957 | pc = attr_value_as_address (attr) + baseaddr; |
3e29f34a | 13958 | pc = gdbarch_adjust_dwarf2_addr (gdbarch, pc); |
96408a79 SA |
13959 | |
13960 | if (cu->call_site_htab == NULL) | |
13961 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
13962 | NULL, &objfile->objfile_obstack, | |
13963 | hashtab_obstack_allocate, NULL); | |
13964 | call_site_local.pc = pc; | |
13965 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
13966 | if (*slot != NULL) | |
13967 | { | |
b98664d3 | 13968 | complaint (_("Duplicate PC %s for DW_TAG_call_site " |
9d8780f0 SM |
13969 | "DIE %s [in module %s]"), |
13970 | paddress (gdbarch, pc), sect_offset_str (die->sect_off), | |
4262abfb | 13971 | objfile_name (objfile)); |
96408a79 SA |
13972 | return; |
13973 | } | |
13974 | ||
13975 | /* Count parameters at the caller. */ | |
13976 | ||
13977 | nparams = 0; | |
13978 | for (child_die = die->child; child_die && child_die->tag; | |
13979 | child_die = sibling_die (child_die)) | |
13980 | { | |
216f72a1 JK |
13981 | if (child_die->tag != DW_TAG_call_site_parameter |
13982 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 | 13983 | { |
b98664d3 | 13984 | complaint (_("Tag %d is not DW_TAG_call_site_parameter in " |
9d8780f0 SM |
13985 | "DW_TAG_call_site child DIE %s [in module %s]"), |
13986 | child_die->tag, sect_offset_str (child_die->sect_off), | |
4262abfb | 13987 | objfile_name (objfile)); |
96408a79 SA |
13988 | continue; |
13989 | } | |
13990 | ||
13991 | nparams++; | |
13992 | } | |
13993 | ||
224c3ddb SM |
13994 | call_site |
13995 | = ((struct call_site *) | |
13996 | obstack_alloc (&objfile->objfile_obstack, | |
13997 | sizeof (*call_site) | |
13998 | + (sizeof (*call_site->parameter) * (nparams - 1)))); | |
96408a79 SA |
13999 | *slot = call_site; |
14000 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
14001 | call_site->pc = pc; | |
14002 | ||
216f72a1 JK |
14003 | if (dwarf2_flag_true_p (die, DW_AT_call_tail_call, cu) |
14004 | || dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
96408a79 SA |
14005 | { |
14006 | struct die_info *func_die; | |
14007 | ||
14008 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
14009 | for (func_die = die->parent; | |
14010 | func_die && func_die->tag != DW_TAG_subprogram | |
14011 | && func_die->tag != DW_TAG_subroutine_type; | |
14012 | func_die = func_die->parent); | |
14013 | ||
216f72a1 JK |
14014 | /* DW_AT_call_all_calls is a superset |
14015 | of DW_AT_call_all_tail_calls. */ | |
96408a79 | 14016 | if (func_die |
216f72a1 | 14017 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_calls, cu) |
96408a79 | 14018 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) |
216f72a1 | 14019 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_tail_calls, cu) |
96408a79 SA |
14020 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) |
14021 | { | |
14022 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
14023 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
14024 | both the initial caller containing the real return address PC and | |
14025 | the final callee containing the current PC of a chain of tail | |
14026 | calls do not need to have the tail call list complete. But any | |
14027 | function candidate for a virtual tail call frame searched via | |
14028 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
14029 | determined unambiguously. */ | |
14030 | } | |
14031 | else | |
14032 | { | |
14033 | struct type *func_type = NULL; | |
14034 | ||
14035 | if (func_die) | |
14036 | func_type = get_die_type (func_die, cu); | |
14037 | if (func_type != NULL) | |
14038 | { | |
14039 | gdb_assert (TYPE_CODE (func_type) == TYPE_CODE_FUNC); | |
14040 | ||
14041 | /* Enlist this call site to the function. */ | |
14042 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
14043 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
14044 | } | |
14045 | else | |
b98664d3 | 14046 | complaint (_("Cannot find function owning DW_TAG_call_site " |
9d8780f0 SM |
14047 | "DIE %s [in module %s]"), |
14048 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
14049 | } |
14050 | } | |
14051 | ||
216f72a1 JK |
14052 | attr = dwarf2_attr (die, DW_AT_call_target, cu); |
14053 | if (attr == NULL) | |
14054 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
14055 | if (attr == NULL) | |
14056 | attr = dwarf2_attr (die, DW_AT_call_origin, cu); | |
96408a79 | 14057 | if (attr == NULL) |
216f72a1 JK |
14058 | { |
14059 | /* This was a pre-DWARF-5 GNU extension alias for DW_AT_call_origin. */ | |
14060 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
14061 | } | |
96408a79 SA |
14062 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); |
14063 | if (!attr || (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0)) | |
14064 | /* Keep NULL DWARF_BLOCK. */; | |
14065 | else if (attr_form_is_block (attr)) | |
14066 | { | |
14067 | struct dwarf2_locexpr_baton *dlbaton; | |
14068 | ||
8d749320 | 14069 | dlbaton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
96408a79 SA |
14070 | dlbaton->data = DW_BLOCK (attr)->data; |
14071 | dlbaton->size = DW_BLOCK (attr)->size; | |
14072 | dlbaton->per_cu = cu->per_cu; | |
14073 | ||
14074 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
14075 | } | |
7771576e | 14076 | else if (attr_form_is_ref (attr)) |
96408a79 | 14077 | { |
96408a79 SA |
14078 | struct dwarf2_cu *target_cu = cu; |
14079 | struct die_info *target_die; | |
14080 | ||
ac9ec31b | 14081 | target_die = follow_die_ref (die, attr, &target_cu); |
518817b3 | 14082 | gdb_assert (target_cu->per_cu->dwarf2_per_objfile->objfile == objfile); |
96408a79 SA |
14083 | if (die_is_declaration (target_die, target_cu)) |
14084 | { | |
7d45c7c3 | 14085 | const char *target_physname; |
9112db09 JK |
14086 | |
14087 | /* Prefer the mangled name; otherwise compute the demangled one. */ | |
73b9be8b | 14088 | target_physname = dw2_linkage_name (target_die, target_cu); |
7d45c7c3 | 14089 | if (target_physname == NULL) |
9112db09 | 14090 | target_physname = dwarf2_physname (NULL, target_die, target_cu); |
96408a79 | 14091 | if (target_physname == NULL) |
b98664d3 | 14092 | complaint (_("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
14093 | "physname, for referencing DIE %s [in module %s]"), |
14094 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 14095 | else |
7d455152 | 14096 | SET_FIELD_PHYSNAME (call_site->target, target_physname); |
96408a79 SA |
14097 | } |
14098 | else | |
14099 | { | |
14100 | CORE_ADDR lowpc; | |
14101 | ||
14102 | /* DW_AT_entry_pc should be preferred. */ | |
3a2b436a | 14103 | if (dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL) |
e385593e | 14104 | <= PC_BOUNDS_INVALID) |
b98664d3 | 14105 | complaint (_("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
14106 | "low pc, for referencing DIE %s [in module %s]"), |
14107 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 14108 | else |
3e29f34a MR |
14109 | { |
14110 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); | |
14111 | SET_FIELD_PHYSADDR (call_site->target, lowpc); | |
14112 | } | |
96408a79 SA |
14113 | } |
14114 | } | |
14115 | else | |
b98664d3 | 14116 | complaint (_("DW_TAG_call_site DW_AT_call_target is neither " |
9d8780f0 SM |
14117 | "block nor reference, for DIE %s [in module %s]"), |
14118 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
14119 | |
14120 | call_site->per_cu = cu->per_cu; | |
14121 | ||
14122 | for (child_die = die->child; | |
14123 | child_die && child_die->tag; | |
14124 | child_die = sibling_die (child_die)) | |
14125 | { | |
96408a79 | 14126 | struct call_site_parameter *parameter; |
1788b2d3 | 14127 | struct attribute *loc, *origin; |
96408a79 | 14128 | |
216f72a1 JK |
14129 | if (child_die->tag != DW_TAG_call_site_parameter |
14130 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 SA |
14131 | { |
14132 | /* Already printed the complaint above. */ | |
14133 | continue; | |
14134 | } | |
14135 | ||
14136 | gdb_assert (call_site->parameter_count < nparams); | |
14137 | parameter = &call_site->parameter[call_site->parameter_count]; | |
14138 | ||
1788b2d3 JK |
14139 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
14140 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
216f72a1 | 14141 | register is contained in DW_AT_call_value. */ |
96408a79 | 14142 | |
24c5c679 | 14143 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
216f72a1 JK |
14144 | origin = dwarf2_attr (child_die, DW_AT_call_parameter, cu); |
14145 | if (origin == NULL) | |
14146 | { | |
14147 | /* This was a pre-DWARF-5 GNU extension alias | |
14148 | for DW_AT_call_parameter. */ | |
14149 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); | |
14150 | } | |
7771576e | 14151 | if (loc == NULL && origin != NULL && attr_form_is_ref (origin)) |
1788b2d3 | 14152 | { |
1788b2d3 | 14153 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; |
9c541725 PA |
14154 | |
14155 | sect_offset sect_off | |
14156 | = (sect_offset) dwarf2_get_ref_die_offset (origin); | |
14157 | if (!offset_in_cu_p (&cu->header, sect_off)) | |
d76b7dbc JK |
14158 | { |
14159 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
14160 | binding can be done only inside one CU. Such referenced DIE | |
14161 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
b98664d3 | 14162 | complaint (_("DW_AT_call_parameter offset is not in CU for " |
9d8780f0 SM |
14163 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14164 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14165 | objfile_name (objfile)); |
d76b7dbc JK |
14166 | continue; |
14167 | } | |
9c541725 PA |
14168 | parameter->u.param_cu_off |
14169 | = (cu_offset) (sect_off - cu->header.sect_off); | |
1788b2d3 JK |
14170 | } |
14171 | else if (loc == NULL || origin != NULL || !attr_form_is_block (loc)) | |
96408a79 | 14172 | { |
b98664d3 | 14173 | complaint (_("No DW_FORM_block* DW_AT_location for " |
9d8780f0 SM |
14174 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14175 | sect_offset_str (child_die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
14176 | continue; |
14177 | } | |
24c5c679 | 14178 | else |
96408a79 | 14179 | { |
24c5c679 JK |
14180 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
14181 | (DW_BLOCK (loc)->data, &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size]); | |
14182 | if (parameter->u.dwarf_reg != -1) | |
14183 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
14184 | else if (dwarf_block_to_sp_offset (gdbarch, DW_BLOCK (loc)->data, | |
14185 | &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size], | |
14186 | ¶meter->u.fb_offset)) | |
14187 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
14188 | else | |
14189 | { | |
b98664d3 | 14190 | complaint (_("Only single DW_OP_reg or DW_OP_fbreg is supported " |
24c5c679 | 14191 | "for DW_FORM_block* DW_AT_location is supported for " |
9d8780f0 | 14192 | "DW_TAG_call_site child DIE %s " |
24c5c679 | 14193 | "[in module %s]"), |
9d8780f0 | 14194 | sect_offset_str (child_die->sect_off), |
9c541725 | 14195 | objfile_name (objfile)); |
24c5c679 JK |
14196 | continue; |
14197 | } | |
96408a79 SA |
14198 | } |
14199 | ||
216f72a1 JK |
14200 | attr = dwarf2_attr (child_die, DW_AT_call_value, cu); |
14201 | if (attr == NULL) | |
14202 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
96408a79 SA |
14203 | if (!attr_form_is_block (attr)) |
14204 | { | |
b98664d3 | 14205 | complaint (_("No DW_FORM_block* DW_AT_call_value for " |
9d8780f0 SM |
14206 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14207 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14208 | objfile_name (objfile)); |
96408a79 SA |
14209 | continue; |
14210 | } | |
14211 | parameter->value = DW_BLOCK (attr)->data; | |
14212 | parameter->value_size = DW_BLOCK (attr)->size; | |
14213 | ||
14214 | /* Parameters are not pre-cleared by memset above. */ | |
14215 | parameter->data_value = NULL; | |
14216 | parameter->data_value_size = 0; | |
14217 | call_site->parameter_count++; | |
14218 | ||
216f72a1 JK |
14219 | attr = dwarf2_attr (child_die, DW_AT_call_data_value, cu); |
14220 | if (attr == NULL) | |
14221 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
96408a79 SA |
14222 | if (attr) |
14223 | { | |
14224 | if (!attr_form_is_block (attr)) | |
b98664d3 | 14225 | complaint (_("No DW_FORM_block* DW_AT_call_data_value for " |
9d8780f0 SM |
14226 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14227 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14228 | objfile_name (objfile)); |
96408a79 SA |
14229 | else |
14230 | { | |
14231 | parameter->data_value = DW_BLOCK (attr)->data; | |
14232 | parameter->data_value_size = DW_BLOCK (attr)->size; | |
14233 | } | |
14234 | } | |
14235 | } | |
14236 | } | |
14237 | ||
71a3c369 TT |
14238 | /* Helper function for read_variable. If DIE represents a virtual |
14239 | table, then return the type of the concrete object that is | |
14240 | associated with the virtual table. Otherwise, return NULL. */ | |
14241 | ||
14242 | static struct type * | |
14243 | rust_containing_type (struct die_info *die, struct dwarf2_cu *cu) | |
14244 | { | |
14245 | struct attribute *attr = dwarf2_attr (die, DW_AT_type, cu); | |
14246 | if (attr == NULL) | |
14247 | return NULL; | |
14248 | ||
14249 | /* Find the type DIE. */ | |
14250 | struct die_info *type_die = NULL; | |
14251 | struct dwarf2_cu *type_cu = cu; | |
14252 | ||
14253 | if (attr_form_is_ref (attr)) | |
14254 | type_die = follow_die_ref (die, attr, &type_cu); | |
14255 | if (type_die == NULL) | |
14256 | return NULL; | |
14257 | ||
14258 | if (dwarf2_attr (type_die, DW_AT_containing_type, type_cu) == NULL) | |
14259 | return NULL; | |
14260 | return die_containing_type (type_die, type_cu); | |
14261 | } | |
14262 | ||
14263 | /* Read a variable (DW_TAG_variable) DIE and create a new symbol. */ | |
14264 | ||
14265 | static void | |
14266 | read_variable (struct die_info *die, struct dwarf2_cu *cu) | |
14267 | { | |
14268 | struct rust_vtable_symbol *storage = NULL; | |
14269 | ||
14270 | if (cu->language == language_rust) | |
14271 | { | |
14272 | struct type *containing_type = rust_containing_type (die, cu); | |
14273 | ||
14274 | if (containing_type != NULL) | |
14275 | { | |
518817b3 | 14276 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
71a3c369 TT |
14277 | |
14278 | storage = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
14279 | struct rust_vtable_symbol); | |
14280 | initialize_objfile_symbol (storage); | |
14281 | storage->concrete_type = containing_type; | |
cf724bc9 | 14282 | storage->subclass = SYMBOL_RUST_VTABLE; |
71a3c369 TT |
14283 | } |
14284 | } | |
14285 | ||
e4a62c65 TV |
14286 | struct symbol *res = new_symbol (die, NULL, cu, storage); |
14287 | struct attribute *abstract_origin | |
14288 | = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
14289 | struct attribute *loc = dwarf2_attr (die, DW_AT_location, cu); | |
14290 | if (res == NULL && loc && abstract_origin) | |
14291 | { | |
14292 | /* We have a variable without a name, but with a location and an abstract | |
14293 | origin. This may be a concrete instance of an abstract variable | |
14294 | referenced from an DW_OP_GNU_variable_value, so save it to find it back | |
14295 | later. */ | |
14296 | struct dwarf2_cu *origin_cu = cu; | |
14297 | struct die_info *origin_die | |
14298 | = follow_die_ref (die, abstract_origin, &origin_cu); | |
14299 | dwarf2_per_objfile *dpo = cu->per_cu->dwarf2_per_objfile; | |
14300 | dpo->abstract_to_concrete[origin_die].push_back (die); | |
14301 | } | |
71a3c369 TT |
14302 | } |
14303 | ||
43988095 JK |
14304 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET |
14305 | reading .debug_rnglists. | |
14306 | Callback's type should be: | |
14307 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
14308 | Return true if the attributes are present and valid, otherwise, | |
14309 | return false. */ | |
14310 | ||
14311 | template <typename Callback> | |
14312 | static bool | |
14313 | dwarf2_rnglists_process (unsigned offset, struct dwarf2_cu *cu, | |
14314 | Callback &&callback) | |
14315 | { | |
ed2dc618 | 14316 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 14317 | = cu->per_cu->dwarf2_per_objfile; |
ed2dc618 | 14318 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
43988095 | 14319 | bfd *obfd = objfile->obfd; |
43988095 JK |
14320 | /* Base address selection entry. */ |
14321 | CORE_ADDR base; | |
14322 | int found_base; | |
43988095 | 14323 | const gdb_byte *buffer; |
43988095 JK |
14324 | CORE_ADDR baseaddr; |
14325 | bool overflow = false; | |
14326 | ||
14327 | found_base = cu->base_known; | |
14328 | base = cu->base_address; | |
14329 | ||
14330 | dwarf2_read_section (objfile, &dwarf2_per_objfile->rnglists); | |
14331 | if (offset >= dwarf2_per_objfile->rnglists.size) | |
14332 | { | |
b98664d3 | 14333 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43988095 JK |
14334 | offset); |
14335 | return false; | |
14336 | } | |
14337 | buffer = dwarf2_per_objfile->rnglists.buffer + offset; | |
14338 | ||
14339 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
14340 | ||
14341 | while (1) | |
14342 | { | |
7814882a JK |
14343 | /* Initialize it due to a false compiler warning. */ |
14344 | CORE_ADDR range_beginning = 0, range_end = 0; | |
43988095 JK |
14345 | const gdb_byte *buf_end = (dwarf2_per_objfile->rnglists.buffer |
14346 | + dwarf2_per_objfile->rnglists.size); | |
14347 | unsigned int bytes_read; | |
14348 | ||
14349 | if (buffer == buf_end) | |
14350 | { | |
14351 | overflow = true; | |
14352 | break; | |
14353 | } | |
14354 | const auto rlet = static_cast<enum dwarf_range_list_entry>(*buffer++); | |
14355 | switch (rlet) | |
14356 | { | |
14357 | case DW_RLE_end_of_list: | |
14358 | break; | |
14359 | case DW_RLE_base_address: | |
14360 | if (buffer + cu->header.addr_size > buf_end) | |
14361 | { | |
14362 | overflow = true; | |
14363 | break; | |
14364 | } | |
14365 | base = read_address (obfd, buffer, cu, &bytes_read); | |
14366 | found_base = 1; | |
14367 | buffer += bytes_read; | |
14368 | break; | |
14369 | case DW_RLE_start_length: | |
14370 | if (buffer + cu->header.addr_size > buf_end) | |
14371 | { | |
14372 | overflow = true; | |
14373 | break; | |
14374 | } | |
14375 | range_beginning = read_address (obfd, buffer, cu, &bytes_read); | |
14376 | buffer += bytes_read; | |
14377 | range_end = (range_beginning | |
14378 | + read_unsigned_leb128 (obfd, buffer, &bytes_read)); | |
14379 | buffer += bytes_read; | |
14380 | if (buffer > buf_end) | |
14381 | { | |
14382 | overflow = true; | |
14383 | break; | |
14384 | } | |
14385 | break; | |
14386 | case DW_RLE_offset_pair: | |
14387 | range_beginning = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14388 | buffer += bytes_read; | |
14389 | if (buffer > buf_end) | |
14390 | { | |
14391 | overflow = true; | |
14392 | break; | |
14393 | } | |
14394 | range_end = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14395 | buffer += bytes_read; | |
14396 | if (buffer > buf_end) | |
14397 | { | |
14398 | overflow = true; | |
14399 | break; | |
14400 | } | |
14401 | break; | |
14402 | case DW_RLE_start_end: | |
14403 | if (buffer + 2 * cu->header.addr_size > buf_end) | |
14404 | { | |
14405 | overflow = true; | |
14406 | break; | |
14407 | } | |
14408 | range_beginning = read_address (obfd, buffer, cu, &bytes_read); | |
14409 | buffer += bytes_read; | |
14410 | range_end = read_address (obfd, buffer, cu, &bytes_read); | |
14411 | buffer += bytes_read; | |
14412 | break; | |
14413 | default: | |
b98664d3 | 14414 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
14415 | return false; |
14416 | } | |
14417 | if (rlet == DW_RLE_end_of_list || overflow) | |
14418 | break; | |
14419 | if (rlet == DW_RLE_base_address) | |
14420 | continue; | |
14421 | ||
14422 | if (!found_base) | |
14423 | { | |
14424 | /* We have no valid base address for the ranges | |
14425 | data. */ | |
b98664d3 | 14426 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
14427 | return false; |
14428 | } | |
14429 | ||
14430 | if (range_beginning > range_end) | |
14431 | { | |
14432 | /* Inverted range entries are invalid. */ | |
b98664d3 | 14433 | complaint (_("Invalid .debug_rnglists data (inverted range)")); |
43988095 JK |
14434 | return false; |
14435 | } | |
14436 | ||
14437 | /* Empty range entries have no effect. */ | |
14438 | if (range_beginning == range_end) | |
14439 | continue; | |
14440 | ||
14441 | range_beginning += base; | |
14442 | range_end += base; | |
14443 | ||
14444 | /* A not-uncommon case of bad debug info. | |
14445 | Don't pollute the addrmap with bad data. */ | |
14446 | if (range_beginning + baseaddr == 0 | |
14447 | && !dwarf2_per_objfile->has_section_at_zero) | |
14448 | { | |
b98664d3 | 14449 | complaint (_(".debug_rnglists entry has start address of zero" |
43988095 JK |
14450 | " [in module %s]"), objfile_name (objfile)); |
14451 | continue; | |
14452 | } | |
14453 | ||
14454 | callback (range_beginning, range_end); | |
14455 | } | |
14456 | ||
14457 | if (overflow) | |
14458 | { | |
b98664d3 | 14459 | complaint (_("Offset %d is not terminated " |
43988095 JK |
14460 | "for DW_AT_ranges attribute"), |
14461 | offset); | |
14462 | return false; | |
14463 | } | |
14464 | ||
14465 | return true; | |
14466 | } | |
14467 | ||
14468 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET reading .debug_ranges. | |
14469 | Callback's type should be: | |
14470 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
5f46c5a5 | 14471 | Return 1 if the attributes are present and valid, otherwise, return 0. */ |
43039443 | 14472 | |
43988095 | 14473 | template <typename Callback> |
43039443 | 14474 | static int |
5f46c5a5 | 14475 | dwarf2_ranges_process (unsigned offset, struct dwarf2_cu *cu, |
43988095 | 14476 | Callback &&callback) |
43039443 | 14477 | { |
ed2dc618 | 14478 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 14479 | = cu->per_cu->dwarf2_per_objfile; |
ed2dc618 | 14480 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
43039443 JK |
14481 | struct comp_unit_head *cu_header = &cu->header; |
14482 | bfd *obfd = objfile->obfd; | |
14483 | unsigned int addr_size = cu_header->addr_size; | |
14484 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
14485 | /* Base address selection entry. */ | |
14486 | CORE_ADDR base; | |
14487 | int found_base; | |
14488 | unsigned int dummy; | |
d521ce57 | 14489 | const gdb_byte *buffer; |
ff013f42 | 14490 | CORE_ADDR baseaddr; |
43039443 | 14491 | |
43988095 JK |
14492 | if (cu_header->version >= 5) |
14493 | return dwarf2_rnglists_process (offset, cu, callback); | |
14494 | ||
d00adf39 DE |
14495 | found_base = cu->base_known; |
14496 | base = cu->base_address; | |
43039443 | 14497 | |
be391dca | 14498 | dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges); |
dce234bc | 14499 | if (offset >= dwarf2_per_objfile->ranges.size) |
43039443 | 14500 | { |
b98664d3 | 14501 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43039443 JK |
14502 | offset); |
14503 | return 0; | |
14504 | } | |
dce234bc | 14505 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
43039443 | 14506 | |
e7030f15 | 14507 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
ff013f42 | 14508 | |
43039443 JK |
14509 | while (1) |
14510 | { | |
14511 | CORE_ADDR range_beginning, range_end; | |
14512 | ||
14513 | range_beginning = read_address (obfd, buffer, cu, &dummy); | |
14514 | buffer += addr_size; | |
14515 | range_end = read_address (obfd, buffer, cu, &dummy); | |
14516 | buffer += addr_size; | |
14517 | offset += 2 * addr_size; | |
14518 | ||
14519 | /* An end of list marker is a pair of zero addresses. */ | |
14520 | if (range_beginning == 0 && range_end == 0) | |
14521 | /* Found the end of list entry. */ | |
14522 | break; | |
14523 | ||
14524 | /* Each base address selection entry is a pair of 2 values. | |
14525 | The first is the largest possible address, the second is | |
14526 | the base address. Check for a base address here. */ | |
14527 | if ((range_beginning & mask) == mask) | |
14528 | { | |
28d2bfb9 AB |
14529 | /* If we found the largest possible address, then we already |
14530 | have the base address in range_end. */ | |
14531 | base = range_end; | |
43039443 JK |
14532 | found_base = 1; |
14533 | continue; | |
14534 | } | |
14535 | ||
14536 | if (!found_base) | |
14537 | { | |
14538 | /* We have no valid base address for the ranges | |
14539 | data. */ | |
b98664d3 | 14540 | complaint (_("Invalid .debug_ranges data (no base address)")); |
43039443 JK |
14541 | return 0; |
14542 | } | |
14543 | ||
9277c30c UW |
14544 | if (range_beginning > range_end) |
14545 | { | |
14546 | /* Inverted range entries are invalid. */ | |
b98664d3 | 14547 | complaint (_("Invalid .debug_ranges data (inverted range)")); |
9277c30c UW |
14548 | return 0; |
14549 | } | |
14550 | ||
14551 | /* Empty range entries have no effect. */ | |
14552 | if (range_beginning == range_end) | |
14553 | continue; | |
14554 | ||
43039443 JK |
14555 | range_beginning += base; |
14556 | range_end += base; | |
14557 | ||
01093045 DE |
14558 | /* A not-uncommon case of bad debug info. |
14559 | Don't pollute the addrmap with bad data. */ | |
14560 | if (range_beginning + baseaddr == 0 | |
14561 | && !dwarf2_per_objfile->has_section_at_zero) | |
14562 | { | |
b98664d3 | 14563 | complaint (_(".debug_ranges entry has start address of zero" |
4262abfb | 14564 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
14565 | continue; |
14566 | } | |
14567 | ||
5f46c5a5 JK |
14568 | callback (range_beginning, range_end); |
14569 | } | |
14570 | ||
14571 | return 1; | |
14572 | } | |
14573 | ||
14574 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. | |
14575 | Return 1 if the attributes are present and valid, otherwise, return 0. | |
14576 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
14577 | ||
14578 | static int | |
14579 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
14580 | CORE_ADDR *high_return, struct dwarf2_cu *cu, | |
14581 | struct partial_symtab *ranges_pst) | |
14582 | { | |
518817b3 | 14583 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
5f46c5a5 JK |
14584 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
14585 | const CORE_ADDR baseaddr = ANOFFSET (objfile->section_offsets, | |
14586 | SECT_OFF_TEXT (objfile)); | |
14587 | int low_set = 0; | |
14588 | CORE_ADDR low = 0; | |
14589 | CORE_ADDR high = 0; | |
14590 | int retval; | |
14591 | ||
14592 | retval = dwarf2_ranges_process (offset, cu, | |
14593 | [&] (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
14594 | { | |
9277c30c | 14595 | if (ranges_pst != NULL) |
3e29f34a MR |
14596 | { |
14597 | CORE_ADDR lowpc; | |
14598 | CORE_ADDR highpc; | |
14599 | ||
79748972 TT |
14600 | lowpc = (gdbarch_adjust_dwarf2_addr (gdbarch, |
14601 | range_beginning + baseaddr) | |
14602 | - baseaddr); | |
14603 | highpc = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
14604 | range_end + baseaddr) | |
14605 | - baseaddr); | |
3e29f34a MR |
14606 | addrmap_set_empty (objfile->psymtabs_addrmap, lowpc, highpc - 1, |
14607 | ranges_pst); | |
14608 | } | |
ff013f42 | 14609 | |
43039443 JK |
14610 | /* FIXME: This is recording everything as a low-high |
14611 | segment of consecutive addresses. We should have a | |
14612 | data structure for discontiguous block ranges | |
14613 | instead. */ | |
14614 | if (! low_set) | |
14615 | { | |
14616 | low = range_beginning; | |
14617 | high = range_end; | |
14618 | low_set = 1; | |
14619 | } | |
14620 | else | |
14621 | { | |
14622 | if (range_beginning < low) | |
14623 | low = range_beginning; | |
14624 | if (range_end > high) | |
14625 | high = range_end; | |
14626 | } | |
5f46c5a5 JK |
14627 | }); |
14628 | if (!retval) | |
14629 | return 0; | |
43039443 JK |
14630 | |
14631 | if (! low_set) | |
14632 | /* If the first entry is an end-of-list marker, the range | |
14633 | describes an empty scope, i.e. no instructions. */ | |
14634 | return 0; | |
14635 | ||
14636 | if (low_return) | |
14637 | *low_return = low; | |
14638 | if (high_return) | |
14639 | *high_return = high; | |
14640 | return 1; | |
14641 | } | |
14642 | ||
3a2b436a JK |
14643 | /* Get low and high pc attributes from a die. See enum pc_bounds_kind |
14644 | definition for the return value. *LOWPC and *HIGHPC are set iff | |
e385593e | 14645 | neither PC_BOUNDS_NOT_PRESENT nor PC_BOUNDS_INVALID are returned. */ |
380bca97 | 14646 | |
3a2b436a | 14647 | static enum pc_bounds_kind |
af34e669 | 14648 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 DJ |
14649 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
14650 | struct partial_symtab *pst) | |
c906108c | 14651 | { |
518817b3 SM |
14652 | struct dwarf2_per_objfile *dwarf2_per_objfile |
14653 | = cu->per_cu->dwarf2_per_objfile; | |
c906108c | 14654 | struct attribute *attr; |
91da1414 | 14655 | struct attribute *attr_high; |
af34e669 DJ |
14656 | CORE_ADDR low = 0; |
14657 | CORE_ADDR high = 0; | |
e385593e | 14658 | enum pc_bounds_kind ret; |
c906108c | 14659 | |
91da1414 MW |
14660 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14661 | if (attr_high) | |
af34e669 | 14662 | { |
e142c38c | 14663 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 | 14664 | if (attr) |
91da1414 | 14665 | { |
31aa7e4e JB |
14666 | low = attr_value_as_address (attr); |
14667 | high = attr_value_as_address (attr_high); | |
14668 | if (cu->header.version >= 4 && attr_form_is_constant (attr_high)) | |
14669 | high += low; | |
91da1414 | 14670 | } |
af34e669 DJ |
14671 | else |
14672 | /* Found high w/o low attribute. */ | |
e385593e | 14673 | return PC_BOUNDS_INVALID; |
af34e669 DJ |
14674 | |
14675 | /* Found consecutive range of addresses. */ | |
3a2b436a | 14676 | ret = PC_BOUNDS_HIGH_LOW; |
af34e669 | 14677 | } |
c906108c | 14678 | else |
af34e669 | 14679 | { |
e142c38c | 14680 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
14681 | if (attr != NULL) |
14682 | { | |
ab435259 DE |
14683 | /* DW_AT_ranges_base does not apply to DIEs from the DWO skeleton. |
14684 | We take advantage of the fact that DW_AT_ranges does not appear | |
14685 | in DW_TAG_compile_unit of DWO files. */ | |
14686 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
14687 | unsigned int ranges_offset = (DW_UNSND (attr) | |
14688 | + (need_ranges_base | |
14689 | ? cu->ranges_base | |
14690 | : 0)); | |
2e3cf129 | 14691 | |
af34e669 | 14692 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 14693 | .debug_ranges section. */ |
2e3cf129 | 14694 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst)) |
e385593e | 14695 | return PC_BOUNDS_INVALID; |
43039443 | 14696 | /* Found discontinuous range of addresses. */ |
3a2b436a | 14697 | ret = PC_BOUNDS_RANGES; |
af34e669 | 14698 | } |
e385593e JK |
14699 | else |
14700 | return PC_BOUNDS_NOT_PRESENT; | |
af34e669 | 14701 | } |
c906108c | 14702 | |
48fbe735 | 14703 | /* partial_die_info::read has also the strict LOW < HIGH requirement. */ |
9373cf26 | 14704 | if (high <= low) |
e385593e | 14705 | return PC_BOUNDS_INVALID; |
c906108c SS |
14706 | |
14707 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
14708 | eliminate duplicate copies of functions and vtables and such. | |
14709 | The linker will arbitrarily choose one and discard the others. | |
14710 | The AT_*_pc values for such functions refer to local labels in | |
14711 | these sections. If the section from that file was discarded, the | |
14712 | labels are not in the output, so the relocs get a value of 0. | |
14713 | If this is a discarded function, mark the pc bounds as invalid, | |
14714 | so that GDB will ignore it. */ | |
72dca2f5 | 14715 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
e385593e | 14716 | return PC_BOUNDS_INVALID; |
c906108c SS |
14717 | |
14718 | *lowpc = low; | |
96408a79 SA |
14719 | if (highpc) |
14720 | *highpc = high; | |
af34e669 | 14721 | return ret; |
c906108c SS |
14722 | } |
14723 | ||
b084d499 JB |
14724 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
14725 | its low and high PC addresses. Do nothing if these addresses could not | |
14726 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
14727 | and HIGHPC to the high address if greater than HIGHPC. */ | |
14728 | ||
14729 | static void | |
14730 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
14731 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
14732 | struct dwarf2_cu *cu) | |
14733 | { | |
14734 | CORE_ADDR low, high; | |
14735 | struct die_info *child = die->child; | |
14736 | ||
e385593e | 14737 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL) >= PC_BOUNDS_RANGES) |
b084d499 | 14738 | { |
325fac50 PA |
14739 | *lowpc = std::min (*lowpc, low); |
14740 | *highpc = std::max (*highpc, high); | |
b084d499 JB |
14741 | } |
14742 | ||
14743 | /* If the language does not allow nested subprograms (either inside | |
14744 | subprograms or lexical blocks), we're done. */ | |
14745 | if (cu->language != language_ada) | |
14746 | return; | |
6e70227d | 14747 | |
b084d499 JB |
14748 | /* Check all the children of the given DIE. If it contains nested |
14749 | subprograms, then check their pc bounds. Likewise, we need to | |
14750 | check lexical blocks as well, as they may also contain subprogram | |
14751 | definitions. */ | |
14752 | while (child && child->tag) | |
14753 | { | |
14754 | if (child->tag == DW_TAG_subprogram | |
14755 | || child->tag == DW_TAG_lexical_block) | |
14756 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
14757 | child = sibling_die (child); | |
14758 | } | |
14759 | } | |
14760 | ||
fae299cd DC |
14761 | /* Get the low and high pc's represented by the scope DIE, and store |
14762 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
14763 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
14764 | ||
14765 | static void | |
14766 | get_scope_pc_bounds (struct die_info *die, | |
14767 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
14768 | struct dwarf2_cu *cu) | |
14769 | { | |
14770 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
14771 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
14772 | CORE_ADDR current_low, current_high; | |
14773 | ||
3a2b436a | 14774 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL) |
e385593e | 14775 | >= PC_BOUNDS_RANGES) |
fae299cd DC |
14776 | { |
14777 | best_low = current_low; | |
14778 | best_high = current_high; | |
14779 | } | |
14780 | else | |
14781 | { | |
14782 | struct die_info *child = die->child; | |
14783 | ||
14784 | while (child && child->tag) | |
14785 | { | |
14786 | switch (child->tag) { | |
14787 | case DW_TAG_subprogram: | |
b084d499 | 14788 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
14789 | break; |
14790 | case DW_TAG_namespace: | |
f55ee35c | 14791 | case DW_TAG_module: |
fae299cd DC |
14792 | /* FIXME: carlton/2004-01-16: Should we do this for |
14793 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
14794 | that current GCC's always emit the DIEs corresponding | |
14795 | to definitions of methods of classes as children of a | |
14796 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
14797 | the DIEs giving the declarations, which could be | |
14798 | anywhere). But I don't see any reason why the | |
14799 | standards says that they have to be there. */ | |
14800 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
14801 | ||
14802 | if (current_low != ((CORE_ADDR) -1)) | |
14803 | { | |
325fac50 PA |
14804 | best_low = std::min (best_low, current_low); |
14805 | best_high = std::max (best_high, current_high); | |
fae299cd DC |
14806 | } |
14807 | break; | |
14808 | default: | |
0963b4bd | 14809 | /* Ignore. */ |
fae299cd DC |
14810 | break; |
14811 | } | |
14812 | ||
14813 | child = sibling_die (child); | |
14814 | } | |
14815 | } | |
14816 | ||
14817 | *lowpc = best_low; | |
14818 | *highpc = best_high; | |
14819 | } | |
14820 | ||
801e3a5b JB |
14821 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
14822 | in DIE. */ | |
380bca97 | 14823 | |
801e3a5b JB |
14824 | static void |
14825 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
14826 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
14827 | { | |
518817b3 | 14828 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 14829 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
801e3a5b | 14830 | struct attribute *attr; |
91da1414 | 14831 | struct attribute *attr_high; |
801e3a5b | 14832 | |
91da1414 MW |
14833 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14834 | if (attr_high) | |
801e3a5b | 14835 | { |
801e3a5b JB |
14836 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
14837 | if (attr) | |
14838 | { | |
31aa7e4e JB |
14839 | CORE_ADDR low = attr_value_as_address (attr); |
14840 | CORE_ADDR high = attr_value_as_address (attr_high); | |
14841 | ||
14842 | if (cu->header.version >= 4 && attr_form_is_constant (attr_high)) | |
14843 | high += low; | |
9a619af0 | 14844 | |
3e29f34a MR |
14845 | low = gdbarch_adjust_dwarf2_addr (gdbarch, low + baseaddr); |
14846 | high = gdbarch_adjust_dwarf2_addr (gdbarch, high + baseaddr); | |
804d2729 | 14847 | cu->builder->record_block_range (block, low, high - 1); |
801e3a5b JB |
14848 | } |
14849 | } | |
14850 | ||
14851 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
14852 | if (attr) | |
14853 | { | |
ab435259 DE |
14854 | /* DW_AT_ranges_base does not apply to DIEs from the DWO skeleton. |
14855 | We take advantage of the fact that DW_AT_ranges does not appear | |
14856 | in DW_TAG_compile_unit of DWO files. */ | |
14857 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
801e3a5b JB |
14858 | |
14859 | /* The value of the DW_AT_ranges attribute is the offset of the | |
14860 | address range list in the .debug_ranges section. */ | |
ab435259 DE |
14861 | unsigned long offset = (DW_UNSND (attr) |
14862 | + (need_ranges_base ? cu->ranges_base : 0)); | |
801e3a5b | 14863 | |
2d5f09ec | 14864 | std::vector<blockrange> blockvec; |
5f46c5a5 JK |
14865 | dwarf2_ranges_process (offset, cu, |
14866 | [&] (CORE_ADDR start, CORE_ADDR end) | |
14867 | { | |
58fdfd2c JK |
14868 | start += baseaddr; |
14869 | end += baseaddr; | |
5f46c5a5 JK |
14870 | start = gdbarch_adjust_dwarf2_addr (gdbarch, start); |
14871 | end = gdbarch_adjust_dwarf2_addr (gdbarch, end); | |
804d2729 | 14872 | cu->builder->record_block_range (block, start, end - 1); |
2d5f09ec | 14873 | blockvec.emplace_back (start, end); |
5f46c5a5 | 14874 | }); |
2d5f09ec KB |
14875 | |
14876 | BLOCK_RANGES(block) = make_blockranges (objfile, blockvec); | |
801e3a5b JB |
14877 | } |
14878 | } | |
14879 | ||
685b1105 JK |
14880 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
14881 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 14882 | |
685b1105 JK |
14883 | static void |
14884 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 | 14885 | { |
38360086 | 14886 | int major, minor; |
60d5a603 JK |
14887 | |
14888 | if (cu->producer == NULL) | |
14889 | { | |
14890 | /* For unknown compilers expect their behavior is DWARF version | |
14891 | compliant. | |
14892 | ||
14893 | GCC started to support .debug_types sections by -gdwarf-4 since | |
14894 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
14895 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
14896 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
14897 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 14898 | } |
b1ffba5a | 14899 | else if (producer_is_gcc (cu->producer, &major, &minor)) |
60d5a603 | 14900 | { |
38360086 MW |
14901 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); |
14902 | cu->producer_is_gcc_lt_4_3 = major < 4 || (major == 4 && minor < 3); | |
685b1105 | 14903 | } |
5230b05a WT |
14904 | else if (producer_is_icc (cu->producer, &major, &minor)) |
14905 | cu->producer_is_icc_lt_14 = major < 14; | |
685b1105 JK |
14906 | else |
14907 | { | |
14908 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
14909 | compliant. */ | |
60d5a603 JK |
14910 | } |
14911 | ||
ba919b58 | 14912 | cu->checked_producer = 1; |
685b1105 | 14913 | } |
ba919b58 | 14914 | |
685b1105 JK |
14915 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
14916 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
14917 | during 4.6.0 experimental. */ | |
14918 | ||
14919 | static int | |
14920 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) | |
14921 | { | |
14922 | if (!cu->checked_producer) | |
14923 | check_producer (cu); | |
14924 | ||
14925 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
14926 | } |
14927 | ||
14928 | /* Return the default accessibility type if it is not overriden by | |
14929 | DW_AT_accessibility. */ | |
14930 | ||
14931 | static enum dwarf_access_attribute | |
14932 | dwarf2_default_access_attribute (struct die_info *die, struct dwarf2_cu *cu) | |
14933 | { | |
14934 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) | |
14935 | { | |
14936 | /* The default DWARF 2 accessibility for members is public, the default | |
14937 | accessibility for inheritance is private. */ | |
14938 | ||
14939 | if (die->tag != DW_TAG_inheritance) | |
14940 | return DW_ACCESS_public; | |
14941 | else | |
14942 | return DW_ACCESS_private; | |
14943 | } | |
14944 | else | |
14945 | { | |
14946 | /* DWARF 3+ defines the default accessibility a different way. The same | |
14947 | rules apply now for DW_TAG_inheritance as for the members and it only | |
14948 | depends on the container kind. */ | |
14949 | ||
14950 | if (die->parent->tag == DW_TAG_class_type) | |
14951 | return DW_ACCESS_private; | |
14952 | else | |
14953 | return DW_ACCESS_public; | |
14954 | } | |
14955 | } | |
14956 | ||
74ac6d43 TT |
14957 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
14958 | offset. If the attribute was not found return 0, otherwise return | |
14959 | 1. If it was found but could not properly be handled, set *OFFSET | |
14960 | to 0. */ | |
14961 | ||
14962 | static int | |
14963 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
14964 | LONGEST *offset) | |
14965 | { | |
14966 | struct attribute *attr; | |
14967 | ||
14968 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
14969 | if (attr != NULL) | |
14970 | { | |
14971 | *offset = 0; | |
14972 | ||
14973 | /* Note that we do not check for a section offset first here. | |
14974 | This is because DW_AT_data_member_location is new in DWARF 4, | |
14975 | so if we see it, we can assume that a constant form is really | |
14976 | a constant and not a section offset. */ | |
14977 | if (attr_form_is_constant (attr)) | |
14978 | *offset = dwarf2_get_attr_constant_value (attr, 0); | |
14979 | else if (attr_form_is_section_offset (attr)) | |
14980 | dwarf2_complex_location_expr_complaint (); | |
14981 | else if (attr_form_is_block (attr)) | |
14982 | *offset = decode_locdesc (DW_BLOCK (attr), cu); | |
14983 | else | |
14984 | dwarf2_complex_location_expr_complaint (); | |
14985 | ||
14986 | return 1; | |
14987 | } | |
14988 | ||
14989 | return 0; | |
14990 | } | |
14991 | ||
c906108c SS |
14992 | /* Add an aggregate field to the field list. */ |
14993 | ||
14994 | static void | |
107d2387 | 14995 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 14996 | struct dwarf2_cu *cu) |
6e70227d | 14997 | { |
518817b3 | 14998 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
5e2b427d | 14999 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
15000 | struct nextfield *new_field; |
15001 | struct attribute *attr; | |
15002 | struct field *fp; | |
15d034d0 | 15003 | const char *fieldname = ""; |
c906108c | 15004 | |
7d0ccb61 DJ |
15005 | if (die->tag == DW_TAG_inheritance) |
15006 | { | |
be2daae6 TT |
15007 | fip->baseclasses.emplace_back (); |
15008 | new_field = &fip->baseclasses.back (); | |
7d0ccb61 DJ |
15009 | } |
15010 | else | |
15011 | { | |
be2daae6 TT |
15012 | fip->fields.emplace_back (); |
15013 | new_field = &fip->fields.back (); | |
7d0ccb61 | 15014 | } |
be2daae6 | 15015 | |
c906108c SS |
15016 | fip->nfields++; |
15017 | ||
e142c38c | 15018 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
15019 | if (attr) |
15020 | new_field->accessibility = DW_UNSND (attr); | |
60d5a603 JK |
15021 | else |
15022 | new_field->accessibility = dwarf2_default_access_attribute (die, cu); | |
c906108c SS |
15023 | if (new_field->accessibility != DW_ACCESS_public) |
15024 | fip->non_public_fields = 1; | |
60d5a603 | 15025 | |
e142c38c | 15026 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
15027 | if (attr) |
15028 | new_field->virtuality = DW_UNSND (attr); | |
60d5a603 JK |
15029 | else |
15030 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
15031 | |
15032 | fp = &new_field->field; | |
a9a9bd0f | 15033 | |
e142c38c | 15034 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 15035 | { |
74ac6d43 TT |
15036 | LONGEST offset; |
15037 | ||
a9a9bd0f | 15038 | /* Data member other than a C++ static data member. */ |
6e70227d | 15039 | |
c906108c | 15040 | /* Get type of field. */ |
e7c27a73 | 15041 | fp->type = die_type (die, cu); |
c906108c | 15042 | |
d6a843b5 | 15043 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 15044 | |
c906108c | 15045 | /* Get bit size of field (zero if none). */ |
e142c38c | 15046 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
15047 | if (attr) |
15048 | { | |
15049 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
15050 | } | |
15051 | else | |
15052 | { | |
15053 | FIELD_BITSIZE (*fp) = 0; | |
15054 | } | |
15055 | ||
15056 | /* Get bit offset of field. */ | |
74ac6d43 TT |
15057 | if (handle_data_member_location (die, cu, &offset)) |
15058 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
e142c38c | 15059 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
15060 | if (attr) |
15061 | { | |
5e2b427d | 15062 | if (gdbarch_bits_big_endian (gdbarch)) |
c906108c SS |
15063 | { |
15064 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
15065 | additional bit offset from the MSB of the containing |
15066 | anonymous object to the MSB of the field. We don't | |
15067 | have to do anything special since we don't need to | |
15068 | know the size of the anonymous object. */ | |
f41f5e61 | 15069 | SET_FIELD_BITPOS (*fp, FIELD_BITPOS (*fp) + DW_UNSND (attr)); |
c906108c SS |
15070 | } |
15071 | else | |
15072 | { | |
15073 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
15074 | MSB of the anonymous object, subtract off the number of |
15075 | bits from the MSB of the field to the MSB of the | |
15076 | object, and then subtract off the number of bits of | |
15077 | the field itself. The result is the bit offset of | |
15078 | the LSB of the field. */ | |
c906108c SS |
15079 | int anonymous_size; |
15080 | int bit_offset = DW_UNSND (attr); | |
15081 | ||
e142c38c | 15082 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
15083 | if (attr) |
15084 | { | |
15085 | /* The size of the anonymous object containing | |
15086 | the bit field is explicit, so use the | |
15087 | indicated size (in bytes). */ | |
15088 | anonymous_size = DW_UNSND (attr); | |
15089 | } | |
15090 | else | |
15091 | { | |
15092 | /* The size of the anonymous object containing | |
15093 | the bit field must be inferred from the type | |
15094 | attribute of the data member containing the | |
15095 | bit field. */ | |
15096 | anonymous_size = TYPE_LENGTH (fp->type); | |
15097 | } | |
f41f5e61 PA |
15098 | SET_FIELD_BITPOS (*fp, |
15099 | (FIELD_BITPOS (*fp) | |
15100 | + anonymous_size * bits_per_byte | |
15101 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
15102 | } |
15103 | } | |
da5b30da AA |
15104 | attr = dwarf2_attr (die, DW_AT_data_bit_offset, cu); |
15105 | if (attr != NULL) | |
15106 | SET_FIELD_BITPOS (*fp, (FIELD_BITPOS (*fp) | |
15107 | + dwarf2_get_attr_constant_value (attr, 0))); | |
c906108c SS |
15108 | |
15109 | /* Get name of field. */ | |
39cbfefa DJ |
15110 | fieldname = dwarf2_name (die, cu); |
15111 | if (fieldname == NULL) | |
15112 | fieldname = ""; | |
d8151005 DJ |
15113 | |
15114 | /* The name is already allocated along with this objfile, so we don't | |
15115 | need to duplicate it for the type. */ | |
15116 | fp->name = fieldname; | |
c906108c SS |
15117 | |
15118 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 15119 | pointer or virtual base class pointer) to private. */ |
e142c38c | 15120 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 15121 | { |
d48cc9dd | 15122 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
15123 | new_field->accessibility = DW_ACCESS_private; |
15124 | fip->non_public_fields = 1; | |
15125 | } | |
15126 | } | |
a9a9bd0f | 15127 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 15128 | { |
a9a9bd0f DC |
15129 | /* C++ static member. */ |
15130 | ||
15131 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
15132 | is a declaration, but all versions of G++ as of this writing | |
15133 | (so through at least 3.2.1) incorrectly generate | |
15134 | DW_TAG_variable tags. */ | |
6e70227d | 15135 | |
ff355380 | 15136 | const char *physname; |
c906108c | 15137 | |
a9a9bd0f | 15138 | /* Get name of field. */ |
39cbfefa DJ |
15139 | fieldname = dwarf2_name (die, cu); |
15140 | if (fieldname == NULL) | |
c906108c SS |
15141 | return; |
15142 | ||
254e6b9e | 15143 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
15144 | if (attr |
15145 | /* Only create a symbol if this is an external value. | |
15146 | new_symbol checks this and puts the value in the global symbol | |
15147 | table, which we want. If it is not external, new_symbol | |
15148 | will try to put the value in cu->list_in_scope which is wrong. */ | |
15149 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
15150 | { |
15151 | /* A static const member, not much different than an enum as far as | |
15152 | we're concerned, except that we can support more types. */ | |
15153 | new_symbol (die, NULL, cu); | |
15154 | } | |
15155 | ||
2df3850c | 15156 | /* Get physical name. */ |
ff355380 | 15157 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 15158 | |
d8151005 DJ |
15159 | /* The name is already allocated along with this objfile, so we don't |
15160 | need to duplicate it for the type. */ | |
15161 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 15162 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 15163 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
15164 | } |
15165 | else if (die->tag == DW_TAG_inheritance) | |
15166 | { | |
74ac6d43 | 15167 | LONGEST offset; |
d4b96c9a | 15168 | |
74ac6d43 TT |
15169 | /* C++ base class field. */ |
15170 | if (handle_data_member_location (die, cu, &offset)) | |
15171 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
c906108c | 15172 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 15173 | FIELD_TYPE (*fp) = die_type (die, cu); |
a737d952 | 15174 | FIELD_NAME (*fp) = TYPE_NAME (fp->type); |
c906108c | 15175 | } |
2ddeaf8a TT |
15176 | else if (die->tag == DW_TAG_variant_part) |
15177 | { | |
15178 | /* process_structure_scope will treat this DIE as a union. */ | |
15179 | process_structure_scope (die, cu); | |
15180 | ||
15181 | /* The variant part is relative to the start of the enclosing | |
15182 | structure. */ | |
15183 | SET_FIELD_BITPOS (*fp, 0); | |
15184 | fp->type = get_die_type (die, cu); | |
15185 | fp->artificial = 1; | |
15186 | fp->name = "<<variant>>"; | |
c8c81635 TT |
15187 | |
15188 | /* Normally a DW_TAG_variant_part won't have a size, but our | |
15189 | representation requires one, so set it to the maximum of the | |
15190 | child sizes. */ | |
15191 | if (TYPE_LENGTH (fp->type) == 0) | |
15192 | { | |
15193 | unsigned max = 0; | |
15194 | for (int i = 0; i < TYPE_NFIELDS (fp->type); ++i) | |
15195 | if (TYPE_LENGTH (TYPE_FIELD_TYPE (fp->type, i)) > max) | |
15196 | max = TYPE_LENGTH (TYPE_FIELD_TYPE (fp->type, i)); | |
15197 | TYPE_LENGTH (fp->type) = max; | |
15198 | } | |
2ddeaf8a TT |
15199 | } |
15200 | else | |
15201 | gdb_assert_not_reached ("missing case in dwarf2_add_field"); | |
c906108c SS |
15202 | } |
15203 | ||
883fd55a KS |
15204 | /* Can the type given by DIE define another type? */ |
15205 | ||
15206 | static bool | |
15207 | type_can_define_types (const struct die_info *die) | |
15208 | { | |
15209 | switch (die->tag) | |
15210 | { | |
15211 | case DW_TAG_typedef: | |
15212 | case DW_TAG_class_type: | |
15213 | case DW_TAG_structure_type: | |
15214 | case DW_TAG_union_type: | |
15215 | case DW_TAG_enumeration_type: | |
15216 | return true; | |
15217 | ||
15218 | default: | |
15219 | return false; | |
15220 | } | |
15221 | } | |
15222 | ||
15223 | /* Add a type definition defined in the scope of the FIP's class. */ | |
98751a41 JK |
15224 | |
15225 | static void | |
883fd55a KS |
15226 | dwarf2_add_type_defn (struct field_info *fip, struct die_info *die, |
15227 | struct dwarf2_cu *cu) | |
6e70227d | 15228 | { |
be2daae6 TT |
15229 | struct decl_field fp; |
15230 | memset (&fp, 0, sizeof (fp)); | |
98751a41 | 15231 | |
883fd55a | 15232 | gdb_assert (type_can_define_types (die)); |
98751a41 | 15233 | |
883fd55a | 15234 | /* Get name of field. NULL is okay here, meaning an anonymous type. */ |
be2daae6 TT |
15235 | fp.name = dwarf2_name (die, cu); |
15236 | fp.type = read_type_die (die, cu); | |
98751a41 | 15237 | |
c191a687 KS |
15238 | /* Save accessibility. */ |
15239 | enum dwarf_access_attribute accessibility; | |
15240 | struct attribute *attr = dwarf2_attr (die, DW_AT_accessibility, cu); | |
15241 | if (attr != NULL) | |
15242 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); | |
15243 | else | |
15244 | accessibility = dwarf2_default_access_attribute (die, cu); | |
15245 | switch (accessibility) | |
15246 | { | |
15247 | case DW_ACCESS_public: | |
15248 | /* The assumed value if neither private nor protected. */ | |
15249 | break; | |
15250 | case DW_ACCESS_private: | |
be2daae6 | 15251 | fp.is_private = 1; |
c191a687 KS |
15252 | break; |
15253 | case DW_ACCESS_protected: | |
be2daae6 | 15254 | fp.is_protected = 1; |
c191a687 KS |
15255 | break; |
15256 | default: | |
b98664d3 | 15257 | complaint (_("Unhandled DW_AT_accessibility value (%x)"), accessibility); |
c191a687 KS |
15258 | } |
15259 | ||
883fd55a | 15260 | if (die->tag == DW_TAG_typedef) |
be2daae6 | 15261 | fip->typedef_field_list.push_back (fp); |
883fd55a | 15262 | else |
be2daae6 | 15263 | fip->nested_types_list.push_back (fp); |
98751a41 JK |
15264 | } |
15265 | ||
c906108c SS |
15266 | /* Create the vector of fields, and attach it to the type. */ |
15267 | ||
15268 | static void | |
fba45db2 | 15269 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15270 | struct dwarf2_cu *cu) |
c906108c SS |
15271 | { |
15272 | int nfields = fip->nfields; | |
15273 | ||
15274 | /* Record the field count, allocate space for the array of fields, | |
15275 | and create blank accessibility bitfields if necessary. */ | |
15276 | TYPE_NFIELDS (type) = nfields; | |
15277 | TYPE_FIELDS (type) = (struct field *) | |
be2daae6 | 15278 | TYPE_ZALLOC (type, sizeof (struct field) * nfields); |
c906108c | 15279 | |
b4ba55a1 | 15280 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
15281 | { |
15282 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15283 | ||
15284 | TYPE_FIELD_PRIVATE_BITS (type) = | |
15285 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15286 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
15287 | ||
15288 | TYPE_FIELD_PROTECTED_BITS (type) = | |
15289 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15290 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
15291 | ||
774b6a14 TT |
15292 | TYPE_FIELD_IGNORE_BITS (type) = |
15293 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15294 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
15295 | } |
15296 | ||
15297 | /* If the type has baseclasses, allocate and clear a bit vector for | |
15298 | TYPE_FIELD_VIRTUAL_BITS. */ | |
be2daae6 | 15299 | if (!fip->baseclasses.empty () && cu->language != language_ada) |
c906108c | 15300 | { |
be2daae6 | 15301 | int num_bytes = B_BYTES (fip->baseclasses.size ()); |
fe1b8b76 | 15302 | unsigned char *pointer; |
c906108c SS |
15303 | |
15304 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
224c3ddb | 15305 | pointer = (unsigned char *) TYPE_ALLOC (type, num_bytes); |
fe1b8b76 | 15306 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; |
be2daae6 TT |
15307 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->baseclasses.size ()); |
15308 | TYPE_N_BASECLASSES (type) = fip->baseclasses.size (); | |
c906108c SS |
15309 | } |
15310 | ||
2ddeaf8a TT |
15311 | if (TYPE_FLAG_DISCRIMINATED_UNION (type)) |
15312 | { | |
15313 | struct discriminant_info *di = alloc_discriminant_info (type, -1, -1); | |
15314 | ||
be2daae6 | 15315 | for (int index = 0; index < nfields; ++index) |
2ddeaf8a | 15316 | { |
be2daae6 TT |
15317 | struct nextfield &field = fip->fields[index]; |
15318 | ||
15319 | if (field.variant.is_discriminant) | |
2ddeaf8a | 15320 | di->discriminant_index = index; |
be2daae6 | 15321 | else if (field.variant.default_branch) |
2ddeaf8a TT |
15322 | di->default_index = index; |
15323 | else | |
be2daae6 | 15324 | di->discriminants[index] = field.variant.discriminant_value; |
2ddeaf8a TT |
15325 | } |
15326 | } | |
15327 | ||
be2daae6 TT |
15328 | /* Copy the saved-up fields into the field vector. */ |
15329 | for (int i = 0; i < nfields; ++i) | |
c906108c | 15330 | { |
be2daae6 TT |
15331 | struct nextfield &field |
15332 | = ((i < fip->baseclasses.size ()) ? fip->baseclasses[i] | |
15333 | : fip->fields[i - fip->baseclasses.size ()]); | |
7d0ccb61 | 15334 | |
be2daae6 TT |
15335 | TYPE_FIELD (type, i) = field.field; |
15336 | switch (field.accessibility) | |
c906108c | 15337 | { |
c5aa993b | 15338 | case DW_ACCESS_private: |
b4ba55a1 | 15339 | if (cu->language != language_ada) |
be2daae6 | 15340 | SET_TYPE_FIELD_PRIVATE (type, i); |
c5aa993b | 15341 | break; |
c906108c | 15342 | |
c5aa993b | 15343 | case DW_ACCESS_protected: |
b4ba55a1 | 15344 | if (cu->language != language_ada) |
be2daae6 | 15345 | SET_TYPE_FIELD_PROTECTED (type, i); |
c5aa993b | 15346 | break; |
c906108c | 15347 | |
c5aa993b JM |
15348 | case DW_ACCESS_public: |
15349 | break; | |
c906108c | 15350 | |
c5aa993b JM |
15351 | default: |
15352 | /* Unknown accessibility. Complain and treat it as public. */ | |
15353 | { | |
b98664d3 | 15354 | complaint (_("unsupported accessibility %d"), |
be2daae6 | 15355 | field.accessibility); |
c5aa993b JM |
15356 | } |
15357 | break; | |
c906108c | 15358 | } |
be2daae6 | 15359 | if (i < fip->baseclasses.size ()) |
c906108c | 15360 | { |
be2daae6 | 15361 | switch (field.virtuality) |
c906108c | 15362 | { |
c5aa993b JM |
15363 | case DW_VIRTUALITY_virtual: |
15364 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 15365 | if (cu->language == language_ada) |
a73c6dcd | 15366 | error (_("unexpected virtuality in component of Ada type")); |
be2daae6 | 15367 | SET_TYPE_FIELD_VIRTUAL (type, i); |
c5aa993b | 15368 | break; |
c906108c SS |
15369 | } |
15370 | } | |
c906108c SS |
15371 | } |
15372 | } | |
15373 | ||
7d27a96d TT |
15374 | /* Return true if this member function is a constructor, false |
15375 | otherwise. */ | |
15376 | ||
15377 | static int | |
15378 | dwarf2_is_constructor (struct die_info *die, struct dwarf2_cu *cu) | |
15379 | { | |
15380 | const char *fieldname; | |
fe978cb0 | 15381 | const char *type_name; |
7d27a96d TT |
15382 | int len; |
15383 | ||
15384 | if (die->parent == NULL) | |
15385 | return 0; | |
15386 | ||
15387 | if (die->parent->tag != DW_TAG_structure_type | |
15388 | && die->parent->tag != DW_TAG_union_type | |
15389 | && die->parent->tag != DW_TAG_class_type) | |
15390 | return 0; | |
15391 | ||
15392 | fieldname = dwarf2_name (die, cu); | |
fe978cb0 PA |
15393 | type_name = dwarf2_name (die->parent, cu); |
15394 | if (fieldname == NULL || type_name == NULL) | |
7d27a96d TT |
15395 | return 0; |
15396 | ||
15397 | len = strlen (fieldname); | |
fe978cb0 PA |
15398 | return (strncmp (fieldname, type_name, len) == 0 |
15399 | && (type_name[len] == '\0' || type_name[len] == '<')); | |
7d27a96d TT |
15400 | } |
15401 | ||
c906108c SS |
15402 | /* Add a member function to the proper fieldlist. */ |
15403 | ||
15404 | static void | |
107d2387 | 15405 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 15406 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 15407 | { |
518817b3 | 15408 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 15409 | struct attribute *attr; |
c906108c | 15410 | int i; |
be2daae6 | 15411 | struct fnfieldlist *flp = nullptr; |
c906108c | 15412 | struct fn_field *fnp; |
15d034d0 | 15413 | const char *fieldname; |
f792889a | 15414 | struct type *this_type; |
60d5a603 | 15415 | enum dwarf_access_attribute accessibility; |
c906108c | 15416 | |
b4ba55a1 | 15417 | if (cu->language == language_ada) |
a73c6dcd | 15418 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 15419 | |
2df3850c | 15420 | /* Get name of member function. */ |
39cbfefa DJ |
15421 | fieldname = dwarf2_name (die, cu); |
15422 | if (fieldname == NULL) | |
2df3850c | 15423 | return; |
c906108c | 15424 | |
c906108c | 15425 | /* Look up member function name in fieldlist. */ |
be2daae6 | 15426 | for (i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15427 | { |
27bfe10e | 15428 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
be2daae6 TT |
15429 | { |
15430 | flp = &fip->fnfieldlists[i]; | |
15431 | break; | |
15432 | } | |
c906108c SS |
15433 | } |
15434 | ||
be2daae6 TT |
15435 | /* Create a new fnfieldlist if necessary. */ |
15436 | if (flp == nullptr) | |
c906108c | 15437 | { |
be2daae6 TT |
15438 | fip->fnfieldlists.emplace_back (); |
15439 | flp = &fip->fnfieldlists.back (); | |
c906108c | 15440 | flp->name = fieldname; |
be2daae6 | 15441 | i = fip->fnfieldlists.size () - 1; |
c906108c SS |
15442 | } |
15443 | ||
be2daae6 TT |
15444 | /* Create a new member function field and add it to the vector of |
15445 | fnfieldlists. */ | |
15446 | flp->fnfields.emplace_back (); | |
15447 | fnp = &flp->fnfields.back (); | |
3da10d80 KS |
15448 | |
15449 | /* Delay processing of the physname until later. */ | |
9c37b5ae | 15450 | if (cu->language == language_cplus) |
be2daae6 TT |
15451 | add_to_method_list (type, i, flp->fnfields.size () - 1, fieldname, |
15452 | die, cu); | |
3da10d80 KS |
15453 | else |
15454 | { | |
1d06ead6 | 15455 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
15456 | fnp->physname = physname ? physname : ""; |
15457 | } | |
15458 | ||
c906108c | 15459 | fnp->type = alloc_type (objfile); |
f792889a DJ |
15460 | this_type = read_type_die (die, cu); |
15461 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 15462 | { |
f792889a | 15463 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 15464 | |
f792889a | 15465 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
15466 | of the method itself (TYPE_CODE_METHOD). */ |
15467 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
15468 | TYPE_TARGET_TYPE (this_type), |
15469 | TYPE_FIELDS (this_type), | |
15470 | TYPE_NFIELDS (this_type), | |
15471 | TYPE_VARARGS (this_type)); | |
c906108c SS |
15472 | |
15473 | /* Handle static member functions. | |
c5aa993b | 15474 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
15475 | member functions. G++ helps GDB by marking the first |
15476 | parameter for non-static member functions (which is the this | |
15477 | pointer) as artificial. We obtain this information from | |
15478 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 15479 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
15480 | fnp->voffset = VOFFSET_STATIC; |
15481 | } | |
15482 | else | |
b98664d3 | 15483 | complaint (_("member function type missing for '%s'"), |
3da10d80 | 15484 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
15485 | |
15486 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 15487 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 15488 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 15489 | |
3e43a32a MS |
15490 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
15491 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
15492 | |
15493 | /* Get accessibility. */ | |
e142c38c | 15494 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c | 15495 | if (attr) |
aead7601 | 15496 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); |
60d5a603 JK |
15497 | else |
15498 | accessibility = dwarf2_default_access_attribute (die, cu); | |
15499 | switch (accessibility) | |
c906108c | 15500 | { |
60d5a603 JK |
15501 | case DW_ACCESS_private: |
15502 | fnp->is_private = 1; | |
15503 | break; | |
15504 | case DW_ACCESS_protected: | |
15505 | fnp->is_protected = 1; | |
15506 | break; | |
c906108c SS |
15507 | } |
15508 | ||
b02dede2 | 15509 | /* Check for artificial methods. */ |
e142c38c | 15510 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
15511 | if (attr && DW_UNSND (attr) != 0) |
15512 | fnp->is_artificial = 1; | |
15513 | ||
7d27a96d TT |
15514 | fnp->is_constructor = dwarf2_is_constructor (die, cu); |
15515 | ||
0d564a31 | 15516 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
15517 | function. For older versions of GCC, this is an offset in the |
15518 | appropriate virtual table, as specified by DW_AT_containing_type. | |
15519 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
15520 | to the object address. */ |
15521 | ||
e142c38c | 15522 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
aec5aa8b | 15523 | if (attr) |
8e19ed76 | 15524 | { |
aec5aa8b | 15525 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 15526 | { |
aec5aa8b TT |
15527 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
15528 | { | |
15529 | /* Old-style GCC. */ | |
15530 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
15531 | } | |
15532 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
15533 | || (DW_BLOCK (attr)->size > 1 | |
15534 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
15535 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
15536 | { | |
aec5aa8b TT |
15537 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); |
15538 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
15539 | dwarf2_complex_location_expr_complaint (); | |
15540 | else | |
15541 | fnp->voffset /= cu->header.addr_size; | |
15542 | fnp->voffset += 2; | |
15543 | } | |
15544 | else | |
15545 | dwarf2_complex_location_expr_complaint (); | |
15546 | ||
15547 | if (!fnp->fcontext) | |
7e993ebf KS |
15548 | { |
15549 | /* If there is no `this' field and no DW_AT_containing_type, | |
15550 | we cannot actually find a base class context for the | |
15551 | vtable! */ | |
15552 | if (TYPE_NFIELDS (this_type) == 0 | |
15553 | || !TYPE_FIELD_ARTIFICIAL (this_type, 0)) | |
15554 | { | |
b98664d3 | 15555 | complaint (_("cannot determine context for virtual member " |
9d8780f0 SM |
15556 | "function \"%s\" (offset %s)"), |
15557 | fieldname, sect_offset_str (die->sect_off)); | |
7e993ebf KS |
15558 | } |
15559 | else | |
15560 | { | |
15561 | fnp->fcontext | |
15562 | = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
15563 | } | |
15564 | } | |
aec5aa8b | 15565 | } |
3690dd37 | 15566 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 15567 | { |
4d3c2250 | 15568 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
15569 | } |
15570 | else | |
15571 | { | |
4d3c2250 KB |
15572 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
15573 | fieldname); | |
8e19ed76 | 15574 | } |
0d564a31 | 15575 | } |
d48cc9dd DJ |
15576 | else |
15577 | { | |
15578 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
15579 | if (attr && DW_UNSND (attr)) | |
15580 | { | |
15581 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
b98664d3 | 15582 | complaint (_("Member function \"%s\" (offset %s) is virtual " |
3e43a32a | 15583 | "but the vtable offset is not specified"), |
9d8780f0 | 15584 | fieldname, sect_offset_str (die->sect_off)); |
9655fd1a | 15585 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
15586 | TYPE_CPLUS_DYNAMIC (type) = 1; |
15587 | } | |
15588 | } | |
c906108c SS |
15589 | } |
15590 | ||
15591 | /* Create the vector of member function fields, and attach it to the type. */ | |
15592 | ||
15593 | static void | |
fba45db2 | 15594 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15595 | struct dwarf2_cu *cu) |
c906108c | 15596 | { |
b4ba55a1 | 15597 | if (cu->language == language_ada) |
a73c6dcd | 15598 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 15599 | |
c906108c SS |
15600 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
15601 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
be2daae6 TT |
15602 | TYPE_ALLOC (type, |
15603 | sizeof (struct fn_fieldlist) * fip->fnfieldlists.size ()); | |
c906108c | 15604 | |
be2daae6 | 15605 | for (int i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15606 | { |
be2daae6 | 15607 | struct fnfieldlist &nf = fip->fnfieldlists[i]; |
c906108c | 15608 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); |
c906108c | 15609 | |
be2daae6 TT |
15610 | TYPE_FN_FIELDLIST_NAME (type, i) = nf.name; |
15611 | TYPE_FN_FIELDLIST_LENGTH (type, i) = nf.fnfields.size (); | |
c906108c | 15612 | fn_flp->fn_fields = (struct fn_field *) |
be2daae6 TT |
15613 | TYPE_ALLOC (type, sizeof (struct fn_field) * nf.fnfields.size ()); |
15614 | ||
15615 | for (int k = 0; k < nf.fnfields.size (); ++k) | |
15616 | fn_flp->fn_fields[k] = nf.fnfields[k]; | |
c906108c SS |
15617 | } |
15618 | ||
be2daae6 | 15619 | TYPE_NFN_FIELDS (type) = fip->fnfieldlists.size (); |
c906108c SS |
15620 | } |
15621 | ||
1168df01 JB |
15622 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
15623 | language, zero otherwise. */ | |
15624 | static int | |
15625 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
15626 | { | |
15627 | static const char vptr[] = "_vptr"; | |
15628 | ||
9c37b5ae TT |
15629 | /* Look for the C++ form of the vtable. */ |
15630 | if (startswith (name, vptr) && is_cplus_marker (name[sizeof (vptr) - 1])) | |
1168df01 JB |
15631 | return 1; |
15632 | ||
15633 | return 0; | |
15634 | } | |
15635 | ||
c0dd20ea | 15636 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
15637 | functions, with the ABI-specified layout. If TYPE describes |
15638 | such a structure, smash it into a member function type. | |
61049d3b DJ |
15639 | |
15640 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
15641 | This is GCC PR debug/28767. */ | |
c0dd20ea | 15642 | |
0b92b5bb TT |
15643 | static void |
15644 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 15645 | { |
09e2d7c7 | 15646 | struct type *pfn_type, *self_type, *new_type; |
c0dd20ea DJ |
15647 | |
15648 | /* Check for a structure with no name and two children. */ | |
0b92b5bb TT |
15649 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2) |
15650 | return; | |
c0dd20ea DJ |
15651 | |
15652 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
15653 | if (TYPE_FIELD_NAME (type, 0) == NULL |
15654 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
15655 | || TYPE_FIELD_NAME (type, 1) == NULL | |
15656 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
15657 | return; | |
c0dd20ea DJ |
15658 | |
15659 | /* Find the type of the method. */ | |
0b92b5bb | 15660 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea DJ |
15661 | if (pfn_type == NULL |
15662 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
15663 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
0b92b5bb | 15664 | return; |
c0dd20ea DJ |
15665 | |
15666 | /* Look for the "this" argument. */ | |
15667 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
15668 | if (TYPE_NFIELDS (pfn_type) == 0 | |
0b92b5bb | 15669 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
c0dd20ea | 15670 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) |
0b92b5bb | 15671 | return; |
c0dd20ea | 15672 | |
09e2d7c7 | 15673 | self_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); |
0b92b5bb | 15674 | new_type = alloc_type (objfile); |
09e2d7c7 | 15675 | smash_to_method_type (new_type, self_type, TYPE_TARGET_TYPE (pfn_type), |
c0dd20ea DJ |
15676 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), |
15677 | TYPE_VARARGS (pfn_type)); | |
0b92b5bb | 15678 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 15679 | } |
1168df01 | 15680 | |
2b4424c3 TT |
15681 | /* If the DIE has a DW_AT_alignment attribute, return its value, doing |
15682 | appropriate error checking and issuing complaints if there is a | |
15683 | problem. */ | |
15684 | ||
15685 | static ULONGEST | |
15686 | get_alignment (struct dwarf2_cu *cu, struct die_info *die) | |
15687 | { | |
15688 | struct attribute *attr = dwarf2_attr (die, DW_AT_alignment, cu); | |
15689 | ||
15690 | if (attr == nullptr) | |
15691 | return 0; | |
15692 | ||
15693 | if (!attr_form_is_constant (attr)) | |
15694 | { | |
b98664d3 | 15695 | complaint (_("DW_AT_alignment must have constant form" |
2b4424c3 TT |
15696 | " - DIE at %s [in module %s]"), |
15697 | sect_offset_str (die->sect_off), | |
15698 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15699 | return 0; | |
15700 | } | |
15701 | ||
15702 | ULONGEST align; | |
15703 | if (attr->form == DW_FORM_sdata) | |
15704 | { | |
15705 | LONGEST val = DW_SND (attr); | |
15706 | if (val < 0) | |
15707 | { | |
b98664d3 | 15708 | complaint (_("DW_AT_alignment value must not be negative" |
2b4424c3 TT |
15709 | " - DIE at %s [in module %s]"), |
15710 | sect_offset_str (die->sect_off), | |
15711 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15712 | return 0; | |
15713 | } | |
15714 | align = val; | |
15715 | } | |
15716 | else | |
15717 | align = DW_UNSND (attr); | |
15718 | ||
15719 | if (align == 0) | |
15720 | { | |
b98664d3 | 15721 | complaint (_("DW_AT_alignment value must not be zero" |
2b4424c3 TT |
15722 | " - DIE at %s [in module %s]"), |
15723 | sect_offset_str (die->sect_off), | |
15724 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15725 | return 0; | |
15726 | } | |
15727 | if ((align & (align - 1)) != 0) | |
15728 | { | |
b98664d3 | 15729 | complaint (_("DW_AT_alignment value must be a power of 2" |
2b4424c3 TT |
15730 | " - DIE at %s [in module %s]"), |
15731 | sect_offset_str (die->sect_off), | |
15732 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15733 | return 0; | |
15734 | } | |
15735 | ||
15736 | return align; | |
15737 | } | |
15738 | ||
15739 | /* If the DIE has a DW_AT_alignment attribute, use its value to set | |
15740 | the alignment for TYPE. */ | |
15741 | ||
15742 | static void | |
15743 | maybe_set_alignment (struct dwarf2_cu *cu, struct die_info *die, | |
15744 | struct type *type) | |
15745 | { | |
15746 | if (!set_type_align (type, get_alignment (cu, die))) | |
b98664d3 | 15747 | complaint (_("DW_AT_alignment value too large" |
2b4424c3 TT |
15748 | " - DIE at %s [in module %s]"), |
15749 | sect_offset_str (die->sect_off), | |
15750 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15751 | } | |
685b1105 | 15752 | |
c906108c | 15753 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
15754 | (definition) to create a type for the structure or union. Fill in |
15755 | the type's name and general properties; the members will not be | |
83655187 DE |
15756 | processed until process_structure_scope. A symbol table entry for |
15757 | the type will also not be done until process_structure_scope (assuming | |
15758 | the type has a name). | |
c906108c | 15759 | |
c767944b DJ |
15760 | NOTE: we need to call these functions regardless of whether or not the |
15761 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c | 15762 | structure or union. This gets the type entered into our set of |
83655187 | 15763 | user defined types. */ |
c906108c | 15764 | |
f792889a | 15765 | static struct type * |
134d01f1 | 15766 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 15767 | { |
518817b3 | 15768 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c SS |
15769 | struct type *type; |
15770 | struct attribute *attr; | |
15d034d0 | 15771 | const char *name; |
c906108c | 15772 | |
348e048f DE |
15773 | /* If the definition of this type lives in .debug_types, read that type. |
15774 | Don't follow DW_AT_specification though, that will take us back up | |
15775 | the chain and we want to go down. */ | |
45e58e77 | 15776 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
15777 | if (attr) |
15778 | { | |
ac9ec31b | 15779 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 15780 | |
ac9ec31b | 15781 | /* The type's CU may not be the same as CU. |
02142a6c | 15782 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
15783 | return set_die_type (die, type, cu); |
15784 | } | |
15785 | ||
c0dd20ea | 15786 | type = alloc_type (objfile); |
c906108c | 15787 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 15788 | |
39cbfefa DJ |
15789 | name = dwarf2_name (die, cu); |
15790 | if (name != NULL) | |
c906108c | 15791 | { |
987504bb | 15792 | if (cu->language == language_cplus |
c44af4eb TT |
15793 | || cu->language == language_d |
15794 | || cu->language == language_rust) | |
63d06c5c | 15795 | { |
15d034d0 | 15796 | const char *full_name = dwarf2_full_name (name, die, cu); |
3da10d80 KS |
15797 | |
15798 | /* dwarf2_full_name might have already finished building the DIE's | |
15799 | type. If so, there is no need to continue. */ | |
15800 | if (get_die_type (die, cu) != NULL) | |
15801 | return get_die_type (die, cu); | |
15802 | ||
e86ca25f | 15803 | TYPE_NAME (type) = full_name; |
63d06c5c DC |
15804 | } |
15805 | else | |
15806 | { | |
d8151005 DJ |
15807 | /* The name is already allocated along with this objfile, so |
15808 | we don't need to duplicate it for the type. */ | |
e86ca25f | 15809 | TYPE_NAME (type) = name; |
63d06c5c | 15810 | } |
c906108c SS |
15811 | } |
15812 | ||
15813 | if (die->tag == DW_TAG_structure_type) | |
15814 | { | |
15815 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
15816 | } | |
15817 | else if (die->tag == DW_TAG_union_type) | |
15818 | { | |
15819 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
15820 | } | |
2ddeaf8a TT |
15821 | else if (die->tag == DW_TAG_variant_part) |
15822 | { | |
15823 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
15824 | TYPE_FLAG_DISCRIMINATED_UNION (type) = 1; | |
15825 | } | |
c906108c SS |
15826 | else |
15827 | { | |
4753d33b | 15828 | TYPE_CODE (type) = TYPE_CODE_STRUCT; |
c906108c SS |
15829 | } |
15830 | ||
0cc2414c TT |
15831 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
15832 | TYPE_DECLARED_CLASS (type) = 1; | |
15833 | ||
e142c38c | 15834 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
15835 | if (attr) |
15836 | { | |
155bfbd3 JB |
15837 | if (attr_form_is_constant (attr)) |
15838 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
15839 | else | |
15840 | { | |
15841 | /* For the moment, dynamic type sizes are not supported | |
15842 | by GDB's struct type. The actual size is determined | |
15843 | on-demand when resolving the type of a given object, | |
15844 | so set the type's length to zero for now. Otherwise, | |
15845 | we record an expression as the length, and that expression | |
15846 | could lead to a very large value, which could eventually | |
15847 | lead to us trying to allocate that much memory when creating | |
15848 | a value of that type. */ | |
15849 | TYPE_LENGTH (type) = 0; | |
15850 | } | |
c906108c SS |
15851 | } |
15852 | else | |
15853 | { | |
15854 | TYPE_LENGTH (type) = 0; | |
15855 | } | |
15856 | ||
2b4424c3 TT |
15857 | maybe_set_alignment (cu, die, type); |
15858 | ||
5230b05a | 15859 | if (producer_is_icc_lt_14 (cu) && (TYPE_LENGTH (type) == 0)) |
685b1105 | 15860 | { |
5230b05a WT |
15861 | /* ICC<14 does not output the required DW_AT_declaration on |
15862 | incomplete types, but gives them a size of zero. */ | |
422b1cb0 | 15863 | TYPE_STUB (type) = 1; |
685b1105 JK |
15864 | } |
15865 | else | |
15866 | TYPE_STUB_SUPPORTED (type) = 1; | |
15867 | ||
dc718098 | 15868 | if (die_is_declaration (die, cu)) |
876cecd0 | 15869 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
15870 | else if (attr == NULL && die->child == NULL |
15871 | && producer_is_realview (cu->producer)) | |
15872 | /* RealView does not output the required DW_AT_declaration | |
15873 | on incomplete types. */ | |
15874 | TYPE_STUB (type) = 1; | |
dc718098 | 15875 | |
c906108c SS |
15876 | /* We need to add the type field to the die immediately so we don't |
15877 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 15878 | type within the structure itself. */ |
1c379e20 | 15879 | set_die_type (die, type, cu); |
c906108c | 15880 | |
7e314c57 JK |
15881 | /* set_die_type should be already done. */ |
15882 | set_descriptive_type (type, die, cu); | |
15883 | ||
c767944b DJ |
15884 | return type; |
15885 | } | |
15886 | ||
2ddeaf8a TT |
15887 | /* A helper for process_structure_scope that handles a single member |
15888 | DIE. */ | |
15889 | ||
15890 | static void | |
15891 | handle_struct_member_die (struct die_info *child_die, struct type *type, | |
15892 | struct field_info *fi, | |
15893 | std::vector<struct symbol *> *template_args, | |
15894 | struct dwarf2_cu *cu) | |
15895 | { | |
15896 | if (child_die->tag == DW_TAG_member | |
15897 | || child_die->tag == DW_TAG_variable | |
15898 | || child_die->tag == DW_TAG_variant_part) | |
15899 | { | |
15900 | /* NOTE: carlton/2002-11-05: A C++ static data member | |
15901 | should be a DW_TAG_member that is a declaration, but | |
15902 | all versions of G++ as of this writing (so through at | |
15903 | least 3.2.1) incorrectly generate DW_TAG_variable | |
15904 | tags for them instead. */ | |
15905 | dwarf2_add_field (fi, child_die, cu); | |
15906 | } | |
15907 | else if (child_die->tag == DW_TAG_subprogram) | |
15908 | { | |
15909 | /* Rust doesn't have member functions in the C++ sense. | |
15910 | However, it does emit ordinary functions as children | |
15911 | of a struct DIE. */ | |
15912 | if (cu->language == language_rust) | |
15913 | read_func_scope (child_die, cu); | |
15914 | else | |
15915 | { | |
15916 | /* C++ member function. */ | |
15917 | dwarf2_add_member_fn (fi, child_die, type, cu); | |
15918 | } | |
15919 | } | |
15920 | else if (child_die->tag == DW_TAG_inheritance) | |
15921 | { | |
15922 | /* C++ base class field. */ | |
15923 | dwarf2_add_field (fi, child_die, cu); | |
15924 | } | |
15925 | else if (type_can_define_types (child_die)) | |
15926 | dwarf2_add_type_defn (fi, child_die, cu); | |
15927 | else if (child_die->tag == DW_TAG_template_type_param | |
15928 | || child_die->tag == DW_TAG_template_value_param) | |
15929 | { | |
15930 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
15931 | ||
15932 | if (arg != NULL) | |
15933 | template_args->push_back (arg); | |
15934 | } | |
15935 | else if (child_die->tag == DW_TAG_variant) | |
15936 | { | |
15937 | /* In a variant we want to get the discriminant and also add a | |
15938 | field for our sole member child. */ | |
15939 | struct attribute *discr = dwarf2_attr (child_die, DW_AT_discr_value, cu); | |
15940 | ||
15941 | for (struct die_info *variant_child = child_die->child; | |
15942 | variant_child != NULL; | |
15943 | variant_child = sibling_die (variant_child)) | |
15944 | { | |
15945 | if (variant_child->tag == DW_TAG_member) | |
15946 | { | |
15947 | handle_struct_member_die (variant_child, type, fi, | |
15948 | template_args, cu); | |
15949 | /* Only handle the one. */ | |
15950 | break; | |
15951 | } | |
15952 | } | |
15953 | ||
15954 | /* We don't handle this but we might as well report it if we see | |
15955 | it. */ | |
15956 | if (dwarf2_attr (child_die, DW_AT_discr_list, cu) != nullptr) | |
b98664d3 | 15957 | complaint (_("DW_AT_discr_list is not supported yet" |
2ddeaf8a TT |
15958 | " - DIE at %s [in module %s]"), |
15959 | sect_offset_str (child_die->sect_off), | |
15960 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15961 | ||
15962 | /* The first field was just added, so we can stash the | |
15963 | discriminant there. */ | |
be2daae6 | 15964 | gdb_assert (!fi->fields.empty ()); |
2ddeaf8a | 15965 | if (discr == NULL) |
be2daae6 | 15966 | fi->fields.back ().variant.default_branch = true; |
2ddeaf8a | 15967 | else |
be2daae6 | 15968 | fi->fields.back ().variant.discriminant_value = DW_UNSND (discr); |
2ddeaf8a TT |
15969 | } |
15970 | } | |
15971 | ||
c767944b DJ |
15972 | /* Finish creating a structure or union type, including filling in |
15973 | its members and creating a symbol for it. */ | |
15974 | ||
15975 | static void | |
15976 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
15977 | { | |
518817b3 | 15978 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
ca040673 | 15979 | struct die_info *child_die; |
c767944b DJ |
15980 | struct type *type; |
15981 | ||
15982 | type = get_die_type (die, cu); | |
15983 | if (type == NULL) | |
15984 | type = read_structure_type (die, cu); | |
15985 | ||
2ddeaf8a TT |
15986 | /* When reading a DW_TAG_variant_part, we need to notice when we |
15987 | read the discriminant member, so we can record it later in the | |
15988 | discriminant_info. */ | |
15989 | bool is_variant_part = TYPE_FLAG_DISCRIMINATED_UNION (type); | |
15990 | sect_offset discr_offset; | |
3e1d3d8c | 15991 | bool has_template_parameters = false; |
2ddeaf8a TT |
15992 | |
15993 | if (is_variant_part) | |
15994 | { | |
15995 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr, cu); | |
15996 | if (discr == NULL) | |
15997 | { | |
15998 | /* Maybe it's a univariant form, an extension we support. | |
15999 | In this case arrange not to check the offset. */ | |
16000 | is_variant_part = false; | |
16001 | } | |
16002 | else if (attr_form_is_ref (discr)) | |
16003 | { | |
16004 | struct dwarf2_cu *target_cu = cu; | |
16005 | struct die_info *target_die = follow_die_ref (die, discr, &target_cu); | |
16006 | ||
16007 | discr_offset = target_die->sect_off; | |
16008 | } | |
16009 | else | |
16010 | { | |
b98664d3 | 16011 | complaint (_("DW_AT_discr does not have DIE reference form" |
2ddeaf8a TT |
16012 | " - DIE at %s [in module %s]"), |
16013 | sect_offset_str (die->sect_off), | |
16014 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
16015 | is_variant_part = false; | |
16016 | } | |
16017 | } | |
16018 | ||
e142c38c | 16019 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
16020 | { |
16021 | struct field_info fi; | |
2f4732b0 | 16022 | std::vector<struct symbol *> template_args; |
c906108c | 16023 | |
639d11d3 | 16024 | child_die = die->child; |
c906108c SS |
16025 | |
16026 | while (child_die && child_die->tag) | |
16027 | { | |
2ddeaf8a | 16028 | handle_struct_member_die (child_die, type, &fi, &template_args, cu); |
34eaf542 | 16029 | |
2ddeaf8a | 16030 | if (is_variant_part && discr_offset == child_die->sect_off) |
be2daae6 | 16031 | fi.fields.back ().variant.is_discriminant = true; |
34eaf542 | 16032 | |
c906108c SS |
16033 | child_die = sibling_die (child_die); |
16034 | } | |
16035 | ||
34eaf542 | 16036 | /* Attach template arguments to type. */ |
2f4732b0 | 16037 | if (!template_args.empty ()) |
34eaf542 | 16038 | { |
3e1d3d8c | 16039 | has_template_parameters = true; |
34eaf542 | 16040 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
2f4732b0 | 16041 | TYPE_N_TEMPLATE_ARGUMENTS (type) = template_args.size (); |
34eaf542 | 16042 | TYPE_TEMPLATE_ARGUMENTS (type) |
8d749320 SM |
16043 | = XOBNEWVEC (&objfile->objfile_obstack, |
16044 | struct symbol *, | |
16045 | TYPE_N_TEMPLATE_ARGUMENTS (type)); | |
34eaf542 | 16046 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), |
2f4732b0 | 16047 | template_args.data (), |
34eaf542 TT |
16048 | (TYPE_N_TEMPLATE_ARGUMENTS (type) |
16049 | * sizeof (struct symbol *))); | |
34eaf542 TT |
16050 | } |
16051 | ||
c906108c SS |
16052 | /* Attach fields and member functions to the type. */ |
16053 | if (fi.nfields) | |
e7c27a73 | 16054 | dwarf2_attach_fields_to_type (&fi, type, cu); |
be2daae6 | 16055 | if (!fi.fnfieldlists.empty ()) |
c906108c | 16056 | { |
e7c27a73 | 16057 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 16058 | |
c5aa993b | 16059 | /* Get the type which refers to the base class (possibly this |
c906108c | 16060 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
16061 | class from the DW_AT_containing_type attribute. This use of |
16062 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 16063 | |
e142c38c | 16064 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 16065 | { |
e7c27a73 | 16066 | struct type *t = die_containing_type (die, cu); |
c906108c | 16067 | |
ae6ae975 | 16068 | set_type_vptr_basetype (type, t); |
c906108c SS |
16069 | if (type == t) |
16070 | { | |
c906108c SS |
16071 | int i; |
16072 | ||
16073 | /* Our own class provides vtbl ptr. */ | |
16074 | for (i = TYPE_NFIELDS (t) - 1; | |
16075 | i >= TYPE_N_BASECLASSES (t); | |
16076 | --i) | |
16077 | { | |
0d5cff50 | 16078 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 16079 | |
1168df01 | 16080 | if (is_vtable_name (fieldname, cu)) |
c906108c | 16081 | { |
ae6ae975 | 16082 | set_type_vptr_fieldno (type, i); |
c906108c SS |
16083 | break; |
16084 | } | |
16085 | } | |
16086 | ||
16087 | /* Complain if virtual function table field not found. */ | |
16088 | if (i < TYPE_N_BASECLASSES (t)) | |
b98664d3 | 16089 | complaint (_("virtual function table pointer " |
3e43a32a | 16090 | "not found when defining class '%s'"), |
e86ca25f | 16091 | TYPE_NAME (type) ? TYPE_NAME (type) : ""); |
c906108c SS |
16092 | } |
16093 | else | |
16094 | { | |
ae6ae975 | 16095 | set_type_vptr_fieldno (type, TYPE_VPTR_FIELDNO (t)); |
c906108c SS |
16096 | } |
16097 | } | |
f6235d4c | 16098 | else if (cu->producer |
61012eef | 16099 | && startswith (cu->producer, "IBM(R) XL C/C++ Advanced Edition")) |
f6235d4c EZ |
16100 | { |
16101 | /* The IBM XLC compiler does not provide direct indication | |
16102 | of the containing type, but the vtable pointer is | |
16103 | always named __vfp. */ | |
16104 | ||
16105 | int i; | |
16106 | ||
16107 | for (i = TYPE_NFIELDS (type) - 1; | |
16108 | i >= TYPE_N_BASECLASSES (type); | |
16109 | --i) | |
16110 | { | |
16111 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
16112 | { | |
ae6ae975 DE |
16113 | set_type_vptr_fieldno (type, i); |
16114 | set_type_vptr_basetype (type, type); | |
f6235d4c EZ |
16115 | break; |
16116 | } | |
16117 | } | |
16118 | } | |
c906108c | 16119 | } |
98751a41 JK |
16120 | |
16121 | /* Copy fi.typedef_field_list linked list elements content into the | |
16122 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
be2daae6 | 16123 | if (!fi.typedef_field_list.empty ()) |
98751a41 | 16124 | { |
be2daae6 | 16125 | int count = fi.typedef_field_list.size (); |
98751a41 | 16126 | |
a0d7a4ff | 16127 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 | 16128 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
883fd55a | 16129 | = ((struct decl_field *) |
be2daae6 TT |
16130 | TYPE_ALLOC (type, |
16131 | sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * count)); | |
16132 | TYPE_TYPEDEF_FIELD_COUNT (type) = count; | |
6e70227d | 16133 | |
be2daae6 TT |
16134 | for (int i = 0; i < fi.typedef_field_list.size (); ++i) |
16135 | TYPE_TYPEDEF_FIELD (type, i) = fi.typedef_field_list[i]; | |
98751a41 | 16136 | } |
c767944b | 16137 | |
883fd55a KS |
16138 | /* Copy fi.nested_types_list linked list elements content into the |
16139 | allocated array TYPE_NESTED_TYPES_ARRAY (type). */ | |
be2daae6 | 16140 | if (!fi.nested_types_list.empty () && cu->language != language_ada) |
883fd55a | 16141 | { |
be2daae6 | 16142 | int count = fi.nested_types_list.size (); |
883fd55a KS |
16143 | |
16144 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
16145 | TYPE_NESTED_TYPES_ARRAY (type) | |
16146 | = ((struct decl_field *) | |
be2daae6 TT |
16147 | TYPE_ALLOC (type, sizeof (struct decl_field) * count)); |
16148 | TYPE_NESTED_TYPES_COUNT (type) = count; | |
883fd55a | 16149 | |
be2daae6 TT |
16150 | for (int i = 0; i < fi.nested_types_list.size (); ++i) |
16151 | TYPE_NESTED_TYPES_FIELD (type, i) = fi.nested_types_list[i]; | |
883fd55a | 16152 | } |
c906108c | 16153 | } |
63d06c5c | 16154 | |
bb5ed363 | 16155 | quirk_gcc_member_function_pointer (type, objfile); |
c9317f21 TT |
16156 | if (cu->language == language_rust && die->tag == DW_TAG_union_type) |
16157 | cu->rust_unions.push_back (type); | |
0b92b5bb | 16158 | |
90aeadfc DC |
16159 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
16160 | snapshots) has been known to create a die giving a declaration | |
16161 | for a class that has, as a child, a die giving a definition for a | |
16162 | nested class. So we have to process our children even if the | |
16163 | current die is a declaration. Normally, of course, a declaration | |
16164 | won't have any children at all. */ | |
134d01f1 | 16165 | |
ca040673 DE |
16166 | child_die = die->child; |
16167 | ||
90aeadfc DC |
16168 | while (child_die != NULL && child_die->tag) |
16169 | { | |
16170 | if (child_die->tag == DW_TAG_member | |
16171 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
16172 | || child_die->tag == DW_TAG_inheritance |
16173 | || child_die->tag == DW_TAG_template_value_param | |
16174 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 16175 | { |
90aeadfc | 16176 | /* Do nothing. */ |
134d01f1 | 16177 | } |
90aeadfc DC |
16178 | else |
16179 | process_die (child_die, cu); | |
134d01f1 | 16180 | |
90aeadfc | 16181 | child_die = sibling_die (child_die); |
134d01f1 DJ |
16182 | } |
16183 | ||
fa4028e9 JB |
16184 | /* Do not consider external references. According to the DWARF standard, |
16185 | these DIEs are identified by the fact that they have no byte_size | |
16186 | attribute, and a declaration attribute. */ | |
16187 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
16188 | || !die_is_declaration (die, cu)) | |
3e1d3d8c TT |
16189 | { |
16190 | struct symbol *sym = new_symbol (die, type, cu); | |
16191 | ||
16192 | if (has_template_parameters) | |
16193 | { | |
16194 | /* Make sure that the symtab is set on the new symbols. | |
16195 | Even though they don't appear in this symtab directly, | |
16196 | other parts of gdb assume that symbols do, and this is | |
16197 | reasonably true. */ | |
16198 | for (int i = 0; i < TYPE_N_TEMPLATE_ARGUMENTS (type); ++i) | |
16199 | symbol_set_symtab (TYPE_TEMPLATE_ARGUMENT (type, i), | |
16200 | symbol_symtab (sym)); | |
16201 | } | |
16202 | } | |
134d01f1 DJ |
16203 | } |
16204 | ||
55426c9d JB |
16205 | /* Assuming DIE is an enumeration type, and TYPE is its associated type, |
16206 | update TYPE using some information only available in DIE's children. */ | |
16207 | ||
16208 | static void | |
16209 | update_enumeration_type_from_children (struct die_info *die, | |
16210 | struct type *type, | |
16211 | struct dwarf2_cu *cu) | |
16212 | { | |
60f7655a | 16213 | struct die_info *child_die; |
55426c9d JB |
16214 | int unsigned_enum = 1; |
16215 | int flag_enum = 1; | |
16216 | ULONGEST mask = 0; | |
55426c9d | 16217 | |
8268c778 | 16218 | auto_obstack obstack; |
55426c9d | 16219 | |
60f7655a DE |
16220 | for (child_die = die->child; |
16221 | child_die != NULL && child_die->tag; | |
16222 | child_die = sibling_die (child_die)) | |
55426c9d JB |
16223 | { |
16224 | struct attribute *attr; | |
16225 | LONGEST value; | |
16226 | const gdb_byte *bytes; | |
16227 | struct dwarf2_locexpr_baton *baton; | |
16228 | const char *name; | |
60f7655a | 16229 | |
55426c9d JB |
16230 | if (child_die->tag != DW_TAG_enumerator) |
16231 | continue; | |
16232 | ||
16233 | attr = dwarf2_attr (child_die, DW_AT_const_value, cu); | |
16234 | if (attr == NULL) | |
16235 | continue; | |
16236 | ||
16237 | name = dwarf2_name (child_die, cu); | |
16238 | if (name == NULL) | |
16239 | name = "<anonymous enumerator>"; | |
16240 | ||
16241 | dwarf2_const_value_attr (attr, type, name, &obstack, cu, | |
16242 | &value, &bytes, &baton); | |
16243 | if (value < 0) | |
16244 | { | |
16245 | unsigned_enum = 0; | |
16246 | flag_enum = 0; | |
16247 | } | |
16248 | else if ((mask & value) != 0) | |
16249 | flag_enum = 0; | |
16250 | else | |
16251 | mask |= value; | |
16252 | ||
16253 | /* If we already know that the enum type is neither unsigned, nor | |
16254 | a flag type, no need to look at the rest of the enumerates. */ | |
16255 | if (!unsigned_enum && !flag_enum) | |
16256 | break; | |
55426c9d JB |
16257 | } |
16258 | ||
16259 | if (unsigned_enum) | |
16260 | TYPE_UNSIGNED (type) = 1; | |
16261 | if (flag_enum) | |
16262 | TYPE_FLAG_ENUM (type) = 1; | |
55426c9d JB |
16263 | } |
16264 | ||
134d01f1 DJ |
16265 | /* Given a DW_AT_enumeration_type die, set its type. We do not |
16266 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 16267 | |
f792889a | 16268 | static struct type * |
134d01f1 | 16269 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16270 | { |
518817b3 | 16271 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 16272 | struct type *type; |
c906108c | 16273 | struct attribute *attr; |
0114d602 | 16274 | const char *name; |
134d01f1 | 16275 | |
348e048f DE |
16276 | /* If the definition of this type lives in .debug_types, read that type. |
16277 | Don't follow DW_AT_specification though, that will take us back up | |
16278 | the chain and we want to go down. */ | |
45e58e77 | 16279 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
16280 | if (attr) |
16281 | { | |
ac9ec31b | 16282 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 16283 | |
ac9ec31b | 16284 | /* The type's CU may not be the same as CU. |
02142a6c | 16285 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
16286 | return set_die_type (die, type, cu); |
16287 | } | |
16288 | ||
c906108c SS |
16289 | type = alloc_type (objfile); |
16290 | ||
16291 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
94af9270 | 16292 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 16293 | if (name != NULL) |
e86ca25f | 16294 | TYPE_NAME (type) = name; |
c906108c | 16295 | |
0626fc76 TT |
16296 | attr = dwarf2_attr (die, DW_AT_type, cu); |
16297 | if (attr != NULL) | |
16298 | { | |
16299 | struct type *underlying_type = die_type (die, cu); | |
16300 | ||
16301 | TYPE_TARGET_TYPE (type) = underlying_type; | |
16302 | } | |
16303 | ||
e142c38c | 16304 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
16305 | if (attr) |
16306 | { | |
16307 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16308 | } | |
16309 | else | |
16310 | { | |
16311 | TYPE_LENGTH (type) = 0; | |
16312 | } | |
16313 | ||
2b4424c3 TT |
16314 | maybe_set_alignment (cu, die, type); |
16315 | ||
137033e9 JB |
16316 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
16317 | declared as private in the package spec, and then defined only | |
16318 | inside the package body. Such types are known as Taft Amendment | |
16319 | Types. When another package uses such a type, an incomplete DIE | |
16320 | may be generated by the compiler. */ | |
02eb380e | 16321 | if (die_is_declaration (die, cu)) |
876cecd0 | 16322 | TYPE_STUB (type) = 1; |
02eb380e | 16323 | |
0626fc76 TT |
16324 | /* Finish the creation of this type by using the enum's children. |
16325 | We must call this even when the underlying type has been provided | |
16326 | so that we can determine if we're looking at a "flag" enum. */ | |
55426c9d JB |
16327 | update_enumeration_type_from_children (die, type, cu); |
16328 | ||
0626fc76 TT |
16329 | /* If this type has an underlying type that is not a stub, then we |
16330 | may use its attributes. We always use the "unsigned" attribute | |
16331 | in this situation, because ordinarily we guess whether the type | |
16332 | is unsigned -- but the guess can be wrong and the underlying type | |
16333 | can tell us the reality. However, we defer to a local size | |
16334 | attribute if one exists, because this lets the compiler override | |
16335 | the underlying type if needed. */ | |
16336 | if (TYPE_TARGET_TYPE (type) != NULL && !TYPE_STUB (TYPE_TARGET_TYPE (type))) | |
16337 | { | |
16338 | TYPE_UNSIGNED (type) = TYPE_UNSIGNED (TYPE_TARGET_TYPE (type)); | |
16339 | if (TYPE_LENGTH (type) == 0) | |
16340 | TYPE_LENGTH (type) = TYPE_LENGTH (TYPE_TARGET_TYPE (type)); | |
2b4424c3 TT |
16341 | if (TYPE_RAW_ALIGN (type) == 0 |
16342 | && TYPE_RAW_ALIGN (TYPE_TARGET_TYPE (type)) != 0) | |
16343 | set_type_align (type, TYPE_RAW_ALIGN (TYPE_TARGET_TYPE (type))); | |
0626fc76 TT |
16344 | } |
16345 | ||
3d567982 TT |
16346 | TYPE_DECLARED_CLASS (type) = dwarf2_flag_true_p (die, DW_AT_enum_class, cu); |
16347 | ||
f792889a | 16348 | return set_die_type (die, type, cu); |
134d01f1 DJ |
16349 | } |
16350 | ||
16351 | /* Given a pointer to a die which begins an enumeration, process all | |
16352 | the dies that define the members of the enumeration, and create the | |
16353 | symbol for the enumeration type. | |
16354 | ||
16355 | NOTE: We reverse the order of the element list. */ | |
16356 | ||
16357 | static void | |
16358 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
16359 | { | |
f792889a | 16360 | struct type *this_type; |
134d01f1 | 16361 | |
f792889a DJ |
16362 | this_type = get_die_type (die, cu); |
16363 | if (this_type == NULL) | |
16364 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 16365 | |
639d11d3 | 16366 | if (die->child != NULL) |
c906108c | 16367 | { |
9dc481d3 DE |
16368 | struct die_info *child_die; |
16369 | struct symbol *sym; | |
16370 | struct field *fields = NULL; | |
16371 | int num_fields = 0; | |
15d034d0 | 16372 | const char *name; |
9dc481d3 | 16373 | |
639d11d3 | 16374 | child_die = die->child; |
c906108c SS |
16375 | while (child_die && child_die->tag) |
16376 | { | |
16377 | if (child_die->tag != DW_TAG_enumerator) | |
16378 | { | |
e7c27a73 | 16379 | process_die (child_die, cu); |
c906108c SS |
16380 | } |
16381 | else | |
16382 | { | |
39cbfefa DJ |
16383 | name = dwarf2_name (child_die, cu); |
16384 | if (name) | |
c906108c | 16385 | { |
f792889a | 16386 | sym = new_symbol (child_die, this_type, cu); |
c906108c SS |
16387 | |
16388 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
16389 | { | |
16390 | fields = (struct field *) | |
16391 | xrealloc (fields, | |
16392 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 16393 | * sizeof (struct field)); |
c906108c SS |
16394 | } |
16395 | ||
3567439c | 16396 | FIELD_NAME (fields[num_fields]) = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 16397 | FIELD_TYPE (fields[num_fields]) = NULL; |
14e75d8e | 16398 | SET_FIELD_ENUMVAL (fields[num_fields], SYMBOL_VALUE (sym)); |
c906108c SS |
16399 | FIELD_BITSIZE (fields[num_fields]) = 0; |
16400 | ||
16401 | num_fields++; | |
16402 | } | |
16403 | } | |
16404 | ||
16405 | child_die = sibling_die (child_die); | |
16406 | } | |
16407 | ||
16408 | if (num_fields) | |
16409 | { | |
f792889a DJ |
16410 | TYPE_NFIELDS (this_type) = num_fields; |
16411 | TYPE_FIELDS (this_type) = (struct field *) | |
16412 | TYPE_ALLOC (this_type, sizeof (struct field) * num_fields); | |
16413 | memcpy (TYPE_FIELDS (this_type), fields, | |
c906108c | 16414 | sizeof (struct field) * num_fields); |
b8c9b27d | 16415 | xfree (fields); |
c906108c | 16416 | } |
c906108c | 16417 | } |
134d01f1 | 16418 | |
6c83ed52 TT |
16419 | /* If we are reading an enum from a .debug_types unit, and the enum |
16420 | is a declaration, and the enum is not the signatured type in the | |
16421 | unit, then we do not want to add a symbol for it. Adding a | |
16422 | symbol would in some cases obscure the true definition of the | |
16423 | enum, giving users an incomplete type when the definition is | |
16424 | actually available. Note that we do not want to do this for all | |
16425 | enums which are just declarations, because C++0x allows forward | |
16426 | enum declarations. */ | |
3019eac3 | 16427 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
16428 | && die_is_declaration (die, cu)) |
16429 | { | |
52dc124a | 16430 | struct signatured_type *sig_type; |
6c83ed52 | 16431 | |
c0f78cd4 | 16432 | sig_type = (struct signatured_type *) cu->per_cu; |
9c541725 PA |
16433 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
16434 | if (sig_type->type_offset_in_section != die->sect_off) | |
6c83ed52 TT |
16435 | return; |
16436 | } | |
16437 | ||
f792889a | 16438 | new_symbol (die, this_type, cu); |
c906108c SS |
16439 | } |
16440 | ||
16441 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
16442 | the DIE's type field. For now, this only handles one dimensional | |
16443 | arrays. */ | |
16444 | ||
f792889a | 16445 | static struct type * |
e7c27a73 | 16446 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16447 | { |
518817b3 | 16448 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 16449 | struct die_info *child_die; |
7e314c57 | 16450 | struct type *type; |
c906108c | 16451 | struct type *element_type, *range_type, *index_type; |
c906108c | 16452 | struct attribute *attr; |
15d034d0 | 16453 | const char *name; |
a405673c | 16454 | struct dynamic_prop *byte_stride_prop = NULL; |
dc53a7ad | 16455 | unsigned int bit_stride = 0; |
c906108c | 16456 | |
e7c27a73 | 16457 | element_type = die_type (die, cu); |
c906108c | 16458 | |
7e314c57 JK |
16459 | /* The die_type call above may have already set the type for this DIE. */ |
16460 | type = get_die_type (die, cu); | |
16461 | if (type) | |
16462 | return type; | |
16463 | ||
dc53a7ad JB |
16464 | attr = dwarf2_attr (die, DW_AT_byte_stride, cu); |
16465 | if (attr != NULL) | |
a405673c JB |
16466 | { |
16467 | int stride_ok; | |
16468 | ||
16469 | byte_stride_prop | |
16470 | = (struct dynamic_prop *) alloca (sizeof (struct dynamic_prop)); | |
16471 | stride_ok = attr_to_dynamic_prop (attr, die, cu, byte_stride_prop); | |
16472 | if (!stride_ok) | |
16473 | { | |
b98664d3 | 16474 | complaint (_("unable to read array DW_AT_byte_stride " |
9d8780f0 SM |
16475 | " - DIE at %s [in module %s]"), |
16476 | sect_offset_str (die->sect_off), | |
518817b3 | 16477 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
a405673c JB |
16478 | /* Ignore this attribute. We will likely not be able to print |
16479 | arrays of this type correctly, but there is little we can do | |
16480 | to help if we cannot read the attribute's value. */ | |
16481 | byte_stride_prop = NULL; | |
16482 | } | |
16483 | } | |
dc53a7ad JB |
16484 | |
16485 | attr = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
16486 | if (attr != NULL) | |
16487 | bit_stride = DW_UNSND (attr); | |
16488 | ||
c906108c SS |
16489 | /* Irix 6.2 native cc creates array types without children for |
16490 | arrays with unspecified length. */ | |
639d11d3 | 16491 | if (die->child == NULL) |
c906108c | 16492 | { |
46bf5051 | 16493 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 16494 | range_type = create_static_range_type (NULL, index_type, 0, -1); |
dc53a7ad | 16495 | type = create_array_type_with_stride (NULL, element_type, range_type, |
a405673c | 16496 | byte_stride_prop, bit_stride); |
f792889a | 16497 | return set_die_type (die, type, cu); |
c906108c SS |
16498 | } |
16499 | ||
791afaa2 | 16500 | std::vector<struct type *> range_types; |
639d11d3 | 16501 | child_die = die->child; |
c906108c SS |
16502 | while (child_die && child_die->tag) |
16503 | { | |
16504 | if (child_die->tag == DW_TAG_subrange_type) | |
16505 | { | |
f792889a | 16506 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 16507 | |
f792889a | 16508 | if (child_type != NULL) |
a02abb62 | 16509 | { |
0963b4bd MS |
16510 | /* The range type was succesfully read. Save it for the |
16511 | array type creation. */ | |
791afaa2 | 16512 | range_types.push_back (child_type); |
a02abb62 | 16513 | } |
c906108c SS |
16514 | } |
16515 | child_die = sibling_die (child_die); | |
16516 | } | |
16517 | ||
16518 | /* Dwarf2 dimensions are output from left to right, create the | |
16519 | necessary array types in backwards order. */ | |
7ca2d3a3 | 16520 | |
c906108c | 16521 | type = element_type; |
7ca2d3a3 DL |
16522 | |
16523 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
16524 | { | |
16525 | int i = 0; | |
9a619af0 | 16526 | |
791afaa2 | 16527 | while (i < range_types.size ()) |
dc53a7ad | 16528 | type = create_array_type_with_stride (NULL, type, range_types[i++], |
a405673c | 16529 | byte_stride_prop, bit_stride); |
7ca2d3a3 DL |
16530 | } |
16531 | else | |
16532 | { | |
791afaa2 | 16533 | size_t ndim = range_types.size (); |
7ca2d3a3 | 16534 | while (ndim-- > 0) |
dc53a7ad | 16535 | type = create_array_type_with_stride (NULL, type, range_types[ndim], |
a405673c | 16536 | byte_stride_prop, bit_stride); |
7ca2d3a3 | 16537 | } |
c906108c | 16538 | |
f5f8a009 EZ |
16539 | /* Understand Dwarf2 support for vector types (like they occur on |
16540 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
16541 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
16542 | custom vendor extension. The main difference between a regular | |
16543 | array and the vector variant is that vectors are passed by value | |
16544 | to functions. */ | |
e142c38c | 16545 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 | 16546 | if (attr) |
ea37ba09 | 16547 | make_vector_type (type); |
f5f8a009 | 16548 | |
dbc98a8b KW |
16549 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
16550 | implementation may choose to implement triple vectors using this | |
16551 | attribute. */ | |
16552 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
16553 | if (attr) | |
16554 | { | |
16555 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
16556 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16557 | else | |
b98664d3 | 16558 | complaint (_("DW_AT_byte_size for array type smaller " |
3e43a32a | 16559 | "than the total size of elements")); |
dbc98a8b KW |
16560 | } |
16561 | ||
39cbfefa DJ |
16562 | name = dwarf2_name (die, cu); |
16563 | if (name) | |
16564 | TYPE_NAME (type) = name; | |
6e70227d | 16565 | |
2b4424c3 TT |
16566 | maybe_set_alignment (cu, die, type); |
16567 | ||
0963b4bd | 16568 | /* Install the type in the die. */ |
7e314c57 JK |
16569 | set_die_type (die, type, cu); |
16570 | ||
16571 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
16572 | set_descriptive_type (type, die, cu); |
16573 | ||
7e314c57 | 16574 | return type; |
c906108c SS |
16575 | } |
16576 | ||
7ca2d3a3 | 16577 | static enum dwarf_array_dim_ordering |
6e70227d | 16578 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
16579 | { |
16580 | struct attribute *attr; | |
16581 | ||
16582 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
16583 | ||
aead7601 SM |
16584 | if (attr) |
16585 | return (enum dwarf_array_dim_ordering) DW_SND (attr); | |
7ca2d3a3 | 16586 | |
0963b4bd MS |
16587 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
16588 | opposite order to the dwarf2 specification, but data is still | |
16589 | laid out as per normal fortran. | |
7ca2d3a3 | 16590 | |
0963b4bd MS |
16591 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
16592 | version checking. */ | |
7ca2d3a3 | 16593 | |
905e0470 PM |
16594 | if (cu->language == language_fortran |
16595 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
16596 | { |
16597 | return DW_ORD_row_major; | |
16598 | } | |
16599 | ||
6e70227d | 16600 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
16601 | { |
16602 | case array_column_major: | |
16603 | return DW_ORD_col_major; | |
16604 | case array_row_major: | |
16605 | default: | |
16606 | return DW_ORD_row_major; | |
16607 | }; | |
16608 | } | |
16609 | ||
72019c9c | 16610 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 16611 | the DIE's type field. */ |
72019c9c | 16612 | |
f792889a | 16613 | static struct type * |
72019c9c GM |
16614 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
16615 | { | |
7e314c57 JK |
16616 | struct type *domain_type, *set_type; |
16617 | struct attribute *attr; | |
f792889a | 16618 | |
7e314c57 JK |
16619 | domain_type = die_type (die, cu); |
16620 | ||
16621 | /* The die_type call above may have already set the type for this DIE. */ | |
16622 | set_type = get_die_type (die, cu); | |
16623 | if (set_type) | |
16624 | return set_type; | |
16625 | ||
16626 | set_type = create_set_type (NULL, domain_type); | |
16627 | ||
16628 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
d09039dd PM |
16629 | if (attr) |
16630 | TYPE_LENGTH (set_type) = DW_UNSND (attr); | |
7e314c57 | 16631 | |
2b4424c3 TT |
16632 | maybe_set_alignment (cu, die, set_type); |
16633 | ||
f792889a | 16634 | return set_die_type (die, set_type, cu); |
72019c9c | 16635 | } |
7ca2d3a3 | 16636 | |
0971de02 TT |
16637 | /* A helper for read_common_block that creates a locexpr baton. |
16638 | SYM is the symbol which we are marking as computed. | |
16639 | COMMON_DIE is the DIE for the common block. | |
16640 | COMMON_LOC is the location expression attribute for the common | |
16641 | block itself. | |
16642 | MEMBER_LOC is the location expression attribute for the particular | |
16643 | member of the common block that we are processing. | |
16644 | CU is the CU from which the above come. */ | |
16645 | ||
16646 | static void | |
16647 | mark_common_block_symbol_computed (struct symbol *sym, | |
16648 | struct die_info *common_die, | |
16649 | struct attribute *common_loc, | |
16650 | struct attribute *member_loc, | |
16651 | struct dwarf2_cu *cu) | |
16652 | { | |
518817b3 SM |
16653 | struct dwarf2_per_objfile *dwarf2_per_objfile |
16654 | = cu->per_cu->dwarf2_per_objfile; | |
0971de02 TT |
16655 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
16656 | struct dwarf2_locexpr_baton *baton; | |
16657 | gdb_byte *ptr; | |
16658 | unsigned int cu_off; | |
16659 | enum bfd_endian byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
16660 | LONGEST offset = 0; | |
16661 | ||
16662 | gdb_assert (common_loc && member_loc); | |
16663 | gdb_assert (attr_form_is_block (common_loc)); | |
16664 | gdb_assert (attr_form_is_block (member_loc) | |
16665 | || attr_form_is_constant (member_loc)); | |
16666 | ||
8d749320 | 16667 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
0971de02 TT |
16668 | baton->per_cu = cu->per_cu; |
16669 | gdb_assert (baton->per_cu); | |
16670 | ||
16671 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
16672 | ||
16673 | if (attr_form_is_constant (member_loc)) | |
16674 | { | |
16675 | offset = dwarf2_get_attr_constant_value (member_loc, 0); | |
16676 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; | |
16677 | } | |
16678 | else | |
16679 | baton->size += DW_BLOCK (member_loc)->size; | |
16680 | ||
224c3ddb | 16681 | ptr = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, baton->size); |
0971de02 TT |
16682 | baton->data = ptr; |
16683 | ||
16684 | *ptr++ = DW_OP_call4; | |
9c541725 | 16685 | cu_off = common_die->sect_off - cu->per_cu->sect_off; |
0971de02 TT |
16686 | store_unsigned_integer (ptr, 4, byte_order, cu_off); |
16687 | ptr += 4; | |
16688 | ||
16689 | if (attr_form_is_constant (member_loc)) | |
16690 | { | |
16691 | *ptr++ = DW_OP_addr; | |
16692 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
16693 | ptr += cu->header.addr_size; | |
16694 | } | |
16695 | else | |
16696 | { | |
16697 | /* We have to copy the data here, because DW_OP_call4 will only | |
16698 | use a DW_AT_location attribute. */ | |
16699 | memcpy (ptr, DW_BLOCK (member_loc)->data, DW_BLOCK (member_loc)->size); | |
16700 | ptr += DW_BLOCK (member_loc)->size; | |
16701 | } | |
16702 | ||
16703 | *ptr++ = DW_OP_plus; | |
16704 | gdb_assert (ptr - baton->data == baton->size); | |
16705 | ||
0971de02 | 16706 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 16707 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
0971de02 TT |
16708 | } |
16709 | ||
4357ac6c TT |
16710 | /* Create appropriate locally-scoped variables for all the |
16711 | DW_TAG_common_block entries. Also create a struct common_block | |
16712 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
16713 | is used to sepate the common blocks name namespace from regular | |
16714 | variable names. */ | |
c906108c SS |
16715 | |
16716 | static void | |
e7c27a73 | 16717 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16718 | { |
0971de02 TT |
16719 | struct attribute *attr; |
16720 | ||
16721 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
16722 | if (attr) | |
16723 | { | |
16724 | /* Support the .debug_loc offsets. */ | |
16725 | if (attr_form_is_block (attr)) | |
16726 | { | |
16727 | /* Ok. */ | |
16728 | } | |
16729 | else if (attr_form_is_section_offset (attr)) | |
16730 | { | |
16731 | dwarf2_complex_location_expr_complaint (); | |
16732 | attr = NULL; | |
16733 | } | |
16734 | else | |
16735 | { | |
16736 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
16737 | "common block member"); | |
16738 | attr = NULL; | |
16739 | } | |
16740 | } | |
16741 | ||
639d11d3 | 16742 | if (die->child != NULL) |
c906108c | 16743 | { |
518817b3 | 16744 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
4357ac6c TT |
16745 | struct die_info *child_die; |
16746 | size_t n_entries = 0, size; | |
16747 | struct common_block *common_block; | |
16748 | struct symbol *sym; | |
74ac6d43 | 16749 | |
4357ac6c TT |
16750 | for (child_die = die->child; |
16751 | child_die && child_die->tag; | |
16752 | child_die = sibling_die (child_die)) | |
16753 | ++n_entries; | |
16754 | ||
16755 | size = (sizeof (struct common_block) | |
16756 | + (n_entries - 1) * sizeof (struct symbol *)); | |
224c3ddb SM |
16757 | common_block |
16758 | = (struct common_block *) obstack_alloc (&objfile->objfile_obstack, | |
16759 | size); | |
4357ac6c TT |
16760 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); |
16761 | common_block->n_entries = 0; | |
16762 | ||
16763 | for (child_die = die->child; | |
16764 | child_die && child_die->tag; | |
16765 | child_die = sibling_die (child_die)) | |
16766 | { | |
16767 | /* Create the symbol in the DW_TAG_common_block block in the current | |
16768 | symbol scope. */ | |
e7c27a73 | 16769 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
16770 | if (sym != NULL) |
16771 | { | |
16772 | struct attribute *member_loc; | |
16773 | ||
16774 | common_block->contents[common_block->n_entries++] = sym; | |
16775 | ||
16776 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
16777 | cu); | |
16778 | if (member_loc) | |
16779 | { | |
16780 | /* GDB has handled this for a long time, but it is | |
16781 | not specified by DWARF. It seems to have been | |
16782 | emitted by gfortran at least as recently as: | |
16783 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
b98664d3 | 16784 | complaint (_("Variable in common block has " |
0971de02 | 16785 | "DW_AT_data_member_location " |
9d8780f0 SM |
16786 | "- DIE at %s [in module %s]"), |
16787 | sect_offset_str (child_die->sect_off), | |
518817b3 | 16788 | objfile_name (objfile)); |
0971de02 TT |
16789 | |
16790 | if (attr_form_is_section_offset (member_loc)) | |
16791 | dwarf2_complex_location_expr_complaint (); | |
16792 | else if (attr_form_is_constant (member_loc) | |
16793 | || attr_form_is_block (member_loc)) | |
16794 | { | |
16795 | if (attr) | |
16796 | mark_common_block_symbol_computed (sym, die, attr, | |
16797 | member_loc, cu); | |
16798 | } | |
16799 | else | |
16800 | dwarf2_complex_location_expr_complaint (); | |
16801 | } | |
16802 | } | |
c906108c | 16803 | } |
4357ac6c TT |
16804 | |
16805 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
16806 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
16807 | } |
16808 | } | |
16809 | ||
0114d602 | 16810 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 16811 | |
0114d602 DJ |
16812 | static struct type * |
16813 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 16814 | { |
518817b3 | 16815 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 16816 | const char *previous_prefix, *name; |
9219021c | 16817 | int is_anonymous; |
0114d602 DJ |
16818 | struct type *type; |
16819 | ||
16820 | /* For extensions, reuse the type of the original namespace. */ | |
16821 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
16822 | { | |
16823 | struct die_info *ext_die; | |
16824 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 16825 | |
0114d602 DJ |
16826 | ext_die = dwarf2_extension (die, &ext_cu); |
16827 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
16828 | |
16829 | /* EXT_CU may not be the same as CU. | |
02142a6c | 16830 | Ensure TYPE is recorded with CU in die_type_hash. */ |
0114d602 DJ |
16831 | return set_die_type (die, type, cu); |
16832 | } | |
9219021c | 16833 | |
e142c38c | 16834 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
16835 | |
16836 | /* Now build the name of the current namespace. */ | |
16837 | ||
0114d602 DJ |
16838 | previous_prefix = determine_prefix (die, cu); |
16839 | if (previous_prefix[0] != '\0') | |
16840 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 16841 | previous_prefix, name, 0, cu); |
0114d602 DJ |
16842 | |
16843 | /* Create the type. */ | |
19f392bc | 16844 | type = init_type (objfile, TYPE_CODE_NAMESPACE, 0, name); |
0114d602 | 16845 | |
60531b24 | 16846 | return set_die_type (die, type, cu); |
0114d602 DJ |
16847 | } |
16848 | ||
22cee43f | 16849 | /* Read a namespace scope. */ |
0114d602 DJ |
16850 | |
16851 | static void | |
16852 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
16853 | { | |
518817b3 | 16854 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 16855 | int is_anonymous; |
9219021c | 16856 | |
5c4e30ca DC |
16857 | /* Add a symbol associated to this if we haven't seen the namespace |
16858 | before. Also, add a using directive if it's an anonymous | |
16859 | namespace. */ | |
9219021c | 16860 | |
f2f0e013 | 16861 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
16862 | { |
16863 | struct type *type; | |
16864 | ||
0114d602 | 16865 | type = read_type_die (die, cu); |
e7c27a73 | 16866 | new_symbol (die, type, cu); |
5c4e30ca | 16867 | |
e8e80198 | 16868 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 16869 | if (is_anonymous) |
0114d602 DJ |
16870 | { |
16871 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 16872 | |
eb1e02fd | 16873 | std::vector<const char *> excludes; |
804d2729 | 16874 | add_using_directive (using_directives (cu), |
22cee43f | 16875 | previous_prefix, TYPE_NAME (type), NULL, |
eb1e02fd | 16876 | NULL, excludes, 0, &objfile->objfile_obstack); |
0114d602 | 16877 | } |
5c4e30ca | 16878 | } |
9219021c | 16879 | |
639d11d3 | 16880 | if (die->child != NULL) |
d9fa45fe | 16881 | { |
639d11d3 | 16882 | struct die_info *child_die = die->child; |
6e70227d | 16883 | |
d9fa45fe DC |
16884 | while (child_die && child_die->tag) |
16885 | { | |
e7c27a73 | 16886 | process_die (child_die, cu); |
d9fa45fe DC |
16887 | child_die = sibling_die (child_die); |
16888 | } | |
16889 | } | |
38d518c9 EZ |
16890 | } |
16891 | ||
f55ee35c JK |
16892 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
16893 | imported module. Still we need that type as local Fortran "use ... only" | |
16894 | declaration imports depend on the created type in determine_prefix. */ | |
16895 | ||
16896 | static struct type * | |
16897 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
16898 | { | |
518817b3 | 16899 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
15d034d0 | 16900 | const char *module_name; |
f55ee35c JK |
16901 | struct type *type; |
16902 | ||
16903 | module_name = dwarf2_name (die, cu); | |
16904 | if (!module_name) | |
b98664d3 | 16905 | complaint (_("DW_TAG_module has no name, offset %s"), |
9d8780f0 | 16906 | sect_offset_str (die->sect_off)); |
19f392bc | 16907 | type = init_type (objfile, TYPE_CODE_MODULE, 0, module_name); |
f55ee35c | 16908 | |
f55ee35c JK |
16909 | return set_die_type (die, type, cu); |
16910 | } | |
16911 | ||
5d7cb8df JK |
16912 | /* Read a Fortran module. */ |
16913 | ||
16914 | static void | |
16915 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
16916 | { | |
16917 | struct die_info *child_die = die->child; | |
530e8392 KB |
16918 | struct type *type; |
16919 | ||
16920 | type = read_type_die (die, cu); | |
16921 | new_symbol (die, type, cu); | |
5d7cb8df | 16922 | |
5d7cb8df JK |
16923 | while (child_die && child_die->tag) |
16924 | { | |
16925 | process_die (child_die, cu); | |
16926 | child_die = sibling_die (child_die); | |
16927 | } | |
16928 | } | |
16929 | ||
38d518c9 EZ |
16930 | /* Return the name of the namespace represented by DIE. Set |
16931 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
16932 | namespace. */ | |
16933 | ||
16934 | static const char * | |
e142c38c | 16935 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
16936 | { |
16937 | struct die_info *current_die; | |
16938 | const char *name = NULL; | |
16939 | ||
16940 | /* Loop through the extensions until we find a name. */ | |
16941 | ||
16942 | for (current_die = die; | |
16943 | current_die != NULL; | |
f2f0e013 | 16944 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 16945 | { |
96553a0c DE |
16946 | /* We don't use dwarf2_name here so that we can detect the absence |
16947 | of a name -> anonymous namespace. */ | |
7d45c7c3 | 16948 | name = dwarf2_string_attr (die, DW_AT_name, cu); |
96553a0c | 16949 | |
38d518c9 EZ |
16950 | if (name != NULL) |
16951 | break; | |
16952 | } | |
16953 | ||
16954 | /* Is it an anonymous namespace? */ | |
16955 | ||
16956 | *is_anonymous = (name == NULL); | |
16957 | if (*is_anonymous) | |
2b1dbab0 | 16958 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
16959 | |
16960 | return name; | |
d9fa45fe DC |
16961 | } |
16962 | ||
c906108c SS |
16963 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
16964 | the user defined type vector. */ | |
16965 | ||
f792889a | 16966 | static struct type * |
e7c27a73 | 16967 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16968 | { |
518817b3 SM |
16969 | struct gdbarch *gdbarch |
16970 | = get_objfile_arch (cu->per_cu->dwarf2_per_objfile->objfile); | |
e7c27a73 | 16971 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 16972 | struct type *type; |
8b2dbe47 KB |
16973 | struct attribute *attr_byte_size; |
16974 | struct attribute *attr_address_class; | |
16975 | int byte_size, addr_class; | |
7e314c57 JK |
16976 | struct type *target_type; |
16977 | ||
16978 | target_type = die_type (die, cu); | |
c906108c | 16979 | |
7e314c57 JK |
16980 | /* The die_type call above may have already set the type for this DIE. */ |
16981 | type = get_die_type (die, cu); | |
16982 | if (type) | |
16983 | return type; | |
16984 | ||
16985 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 16986 | |
e142c38c | 16987 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
16988 | if (attr_byte_size) |
16989 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 16990 | else |
8b2dbe47 KB |
16991 | byte_size = cu_header->addr_size; |
16992 | ||
e142c38c | 16993 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
16994 | if (attr_address_class) |
16995 | addr_class = DW_UNSND (attr_address_class); | |
16996 | else | |
16997 | addr_class = DW_ADDR_none; | |
16998 | ||
2b4424c3 TT |
16999 | ULONGEST alignment = get_alignment (cu, die); |
17000 | ||
17001 | /* If the pointer size, alignment, or address class is different | |
17002 | than the default, create a type variant marked as such and set | |
17003 | the length accordingly. */ | |
17004 | if (TYPE_LENGTH (type) != byte_size | |
17005 | || (alignment != 0 && TYPE_RAW_ALIGN (type) != 0 | |
17006 | && alignment != TYPE_RAW_ALIGN (type)) | |
17007 | || addr_class != DW_ADDR_none) | |
c906108c | 17008 | { |
5e2b427d | 17009 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
17010 | { |
17011 | int type_flags; | |
17012 | ||
849957d9 | 17013 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 17014 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
17015 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
17016 | == 0); | |
8b2dbe47 KB |
17017 | type = make_type_with_address_space (type, type_flags); |
17018 | } | |
17019 | else if (TYPE_LENGTH (type) != byte_size) | |
17020 | { | |
b98664d3 | 17021 | complaint (_("invalid pointer size %d"), byte_size); |
8b2dbe47 | 17022 | } |
2b4424c3 TT |
17023 | else if (TYPE_RAW_ALIGN (type) != alignment) |
17024 | { | |
b98664d3 | 17025 | complaint (_("Invalid DW_AT_alignment" |
2b4424c3 TT |
17026 | " - DIE at %s [in module %s]"), |
17027 | sect_offset_str (die->sect_off), | |
17028 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
17029 | } | |
6e70227d | 17030 | else |
9a619af0 MS |
17031 | { |
17032 | /* Should we also complain about unhandled address classes? */ | |
17033 | } | |
c906108c | 17034 | } |
8b2dbe47 KB |
17035 | |
17036 | TYPE_LENGTH (type) = byte_size; | |
2b4424c3 | 17037 | set_type_align (type, alignment); |
f792889a | 17038 | return set_die_type (die, type, cu); |
c906108c SS |
17039 | } |
17040 | ||
17041 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
17042 | the user defined type vector. */ | |
17043 | ||
f792889a | 17044 | static struct type * |
e7c27a73 | 17045 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
17046 | { |
17047 | struct type *type; | |
17048 | struct type *to_type; | |
17049 | struct type *domain; | |
17050 | ||
e7c27a73 DJ |
17051 | to_type = die_type (die, cu); |
17052 | domain = die_containing_type (die, cu); | |
0d5de010 | 17053 | |
7e314c57 JK |
17054 | /* The calls above may have already set the type for this DIE. */ |
17055 | type = get_die_type (die, cu); | |
17056 | if (type) | |
17057 | return type; | |
17058 | ||
0d5de010 DJ |
17059 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) |
17060 | type = lookup_methodptr_type (to_type); | |
7078baeb TT |
17061 | else if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_FUNC) |
17062 | { | |
518817b3 SM |
17063 | struct type *new_type |
17064 | = alloc_type (cu->per_cu->dwarf2_per_objfile->objfile); | |
7078baeb TT |
17065 | |
17066 | smash_to_method_type (new_type, domain, TYPE_TARGET_TYPE (to_type), | |
17067 | TYPE_FIELDS (to_type), TYPE_NFIELDS (to_type), | |
17068 | TYPE_VARARGS (to_type)); | |
17069 | type = lookup_methodptr_type (new_type); | |
17070 | } | |
0d5de010 DJ |
17071 | else |
17072 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 17073 | |
f792889a | 17074 | return set_die_type (die, type, cu); |
c906108c SS |
17075 | } |
17076 | ||
4297a3f0 | 17077 | /* Extract all information from a DW_TAG_{rvalue_,}reference_type DIE and add to |
c906108c SS |
17078 | the user defined type vector. */ |
17079 | ||
f792889a | 17080 | static struct type * |
4297a3f0 AV |
17081 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu, |
17082 | enum type_code refcode) | |
c906108c | 17083 | { |
e7c27a73 | 17084 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 17085 | struct type *type, *target_type; |
c906108c SS |
17086 | struct attribute *attr; |
17087 | ||
4297a3f0 AV |
17088 | gdb_assert (refcode == TYPE_CODE_REF || refcode == TYPE_CODE_RVALUE_REF); |
17089 | ||
7e314c57 JK |
17090 | target_type = die_type (die, cu); |
17091 | ||
17092 | /* The die_type call above may have already set the type for this DIE. */ | |
17093 | type = get_die_type (die, cu); | |
17094 | if (type) | |
17095 | return type; | |
17096 | ||
4297a3f0 | 17097 | type = lookup_reference_type (target_type, refcode); |
e142c38c | 17098 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
17099 | if (attr) |
17100 | { | |
17101 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
17102 | } | |
17103 | else | |
17104 | { | |
107d2387 | 17105 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 17106 | } |
2b4424c3 | 17107 | maybe_set_alignment (cu, die, type); |
f792889a | 17108 | return set_die_type (die, type, cu); |
c906108c SS |
17109 | } |
17110 | ||
cf363f18 MW |
17111 | /* Add the given cv-qualifiers to the element type of the array. GCC |
17112 | outputs DWARF type qualifiers that apply to an array, not the | |
17113 | element type. But GDB relies on the array element type to carry | |
17114 | the cv-qualifiers. This mimics section 6.7.3 of the C99 | |
17115 | specification. */ | |
17116 | ||
17117 | static struct type * | |
17118 | add_array_cv_type (struct die_info *die, struct dwarf2_cu *cu, | |
17119 | struct type *base_type, int cnst, int voltl) | |
17120 | { | |
17121 | struct type *el_type, *inner_array; | |
17122 | ||
17123 | base_type = copy_type (base_type); | |
17124 | inner_array = base_type; | |
17125 | ||
17126 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) | |
17127 | { | |
17128 | TYPE_TARGET_TYPE (inner_array) = | |
17129 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
17130 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
17131 | } | |
17132 | ||
17133 | el_type = TYPE_TARGET_TYPE (inner_array); | |
17134 | cnst |= TYPE_CONST (el_type); | |
17135 | voltl |= TYPE_VOLATILE (el_type); | |
17136 | TYPE_TARGET_TYPE (inner_array) = make_cv_type (cnst, voltl, el_type, NULL); | |
17137 | ||
17138 | return set_die_type (die, base_type, cu); | |
17139 | } | |
17140 | ||
f792889a | 17141 | static struct type * |
e7c27a73 | 17142 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17143 | { |
f792889a | 17144 | struct type *base_type, *cv_type; |
c906108c | 17145 | |
e7c27a73 | 17146 | base_type = die_type (die, cu); |
7e314c57 JK |
17147 | |
17148 | /* The die_type call above may have already set the type for this DIE. */ | |
17149 | cv_type = get_die_type (die, cu); | |
17150 | if (cv_type) | |
17151 | return cv_type; | |
17152 | ||
2f608a3a KW |
17153 | /* In case the const qualifier is applied to an array type, the element type |
17154 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
17155 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
cf363f18 | 17156 | return add_array_cv_type (die, cu, base_type, 1, 0); |
2f608a3a | 17157 | |
f792889a DJ |
17158 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
17159 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
17160 | } |
17161 | ||
f792889a | 17162 | static struct type * |
e7c27a73 | 17163 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17164 | { |
f792889a | 17165 | struct type *base_type, *cv_type; |
c906108c | 17166 | |
e7c27a73 | 17167 | base_type = die_type (die, cu); |
7e314c57 JK |
17168 | |
17169 | /* The die_type call above may have already set the type for this DIE. */ | |
17170 | cv_type = get_die_type (die, cu); | |
17171 | if (cv_type) | |
17172 | return cv_type; | |
17173 | ||
cf363f18 MW |
17174 | /* In case the volatile qualifier is applied to an array type, the |
17175 | element type is so qualified, not the array type (section 6.7.3 | |
17176 | of C99). */ | |
17177 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
17178 | return add_array_cv_type (die, cu, base_type, 0, 1); | |
17179 | ||
f792889a DJ |
17180 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
17181 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
17182 | } |
17183 | ||
06d66ee9 TT |
17184 | /* Handle DW_TAG_restrict_type. */ |
17185 | ||
17186 | static struct type * | |
17187 | read_tag_restrict_type (struct die_info *die, struct dwarf2_cu *cu) | |
17188 | { | |
17189 | struct type *base_type, *cv_type; | |
17190 | ||
17191 | base_type = die_type (die, cu); | |
17192 | ||
17193 | /* The die_type call above may have already set the type for this DIE. */ | |
17194 | cv_type = get_die_type (die, cu); | |
17195 | if (cv_type) | |
17196 | return cv_type; | |
17197 | ||
17198 | cv_type = make_restrict_type (base_type); | |
17199 | return set_die_type (die, cv_type, cu); | |
17200 | } | |
17201 | ||
a2c2acaf MW |
17202 | /* Handle DW_TAG_atomic_type. */ |
17203 | ||
17204 | static struct type * | |
17205 | read_tag_atomic_type (struct die_info *die, struct dwarf2_cu *cu) | |
17206 | { | |
17207 | struct type *base_type, *cv_type; | |
17208 | ||
17209 | base_type = die_type (die, cu); | |
17210 | ||
17211 | /* The die_type call above may have already set the type for this DIE. */ | |
17212 | cv_type = get_die_type (die, cu); | |
17213 | if (cv_type) | |
17214 | return cv_type; | |
17215 | ||
17216 | cv_type = make_atomic_type (base_type); | |
17217 | return set_die_type (die, cv_type, cu); | |
17218 | } | |
17219 | ||
c906108c SS |
17220 | /* Extract all information from a DW_TAG_string_type DIE and add to |
17221 | the user defined type vector. It isn't really a user defined type, | |
17222 | but it behaves like one, with other DIE's using an AT_user_def_type | |
17223 | attribute to reference it. */ | |
17224 | ||
f792889a | 17225 | static struct type * |
e7c27a73 | 17226 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17227 | { |
518817b3 | 17228 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3b7538c0 | 17229 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
17230 | struct type *type, *range_type, *index_type, *char_type; |
17231 | struct attribute *attr; | |
17232 | unsigned int length; | |
17233 | ||
e142c38c | 17234 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
17235 | if (attr) |
17236 | { | |
17237 | length = DW_UNSND (attr); | |
17238 | } | |
17239 | else | |
17240 | { | |
0963b4bd | 17241 | /* Check for the DW_AT_byte_size attribute. */ |
e142c38c | 17242 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
17243 | if (attr) |
17244 | { | |
17245 | length = DW_UNSND (attr); | |
17246 | } | |
17247 | else | |
17248 | { | |
17249 | length = 1; | |
17250 | } | |
c906108c | 17251 | } |
6ccb9162 | 17252 | |
46bf5051 | 17253 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 17254 | range_type = create_static_range_type (NULL, index_type, 1, length); |
3b7538c0 UW |
17255 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
17256 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 17257 | |
f792889a | 17258 | return set_die_type (die, type, cu); |
c906108c SS |
17259 | } |
17260 | ||
4d804846 JB |
17261 | /* Assuming that DIE corresponds to a function, returns nonzero |
17262 | if the function is prototyped. */ | |
17263 | ||
17264 | static int | |
17265 | prototyped_function_p (struct die_info *die, struct dwarf2_cu *cu) | |
17266 | { | |
17267 | struct attribute *attr; | |
17268 | ||
17269 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); | |
17270 | if (attr && (DW_UNSND (attr) != 0)) | |
17271 | return 1; | |
17272 | ||
17273 | /* The DWARF standard implies that the DW_AT_prototyped attribute | |
17274 | is only meaninful for C, but the concept also extends to other | |
17275 | languages that allow unprototyped functions (Eg: Objective C). | |
17276 | For all other languages, assume that functions are always | |
17277 | prototyped. */ | |
17278 | if (cu->language != language_c | |
17279 | && cu->language != language_objc | |
17280 | && cu->language != language_opencl) | |
17281 | return 1; | |
17282 | ||
17283 | /* RealView does not emit DW_AT_prototyped. We can not distinguish | |
17284 | prototyped and unprototyped functions; default to prototyped, | |
17285 | since that is more common in modern code (and RealView warns | |
17286 | about unprototyped functions). */ | |
17287 | if (producer_is_realview (cu->producer)) | |
17288 | return 1; | |
17289 | ||
17290 | return 0; | |
17291 | } | |
17292 | ||
c906108c SS |
17293 | /* Handle DIES due to C code like: |
17294 | ||
17295 | struct foo | |
c5aa993b JM |
17296 | { |
17297 | int (*funcp)(int a, long l); | |
17298 | int b; | |
17299 | }; | |
c906108c | 17300 | |
0963b4bd | 17301 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 17302 | |
f792889a | 17303 | static struct type * |
e7c27a73 | 17304 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17305 | { |
518817b3 | 17306 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0963b4bd MS |
17307 | struct type *type; /* Type that this function returns. */ |
17308 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
17309 | struct attribute *attr; |
17310 | ||
e7c27a73 | 17311 | type = die_type (die, cu); |
7e314c57 JK |
17312 | |
17313 | /* The die_type call above may have already set the type for this DIE. */ | |
17314 | ftype = get_die_type (die, cu); | |
17315 | if (ftype) | |
17316 | return ftype; | |
17317 | ||
0c8b41f1 | 17318 | ftype = lookup_function_type (type); |
c906108c | 17319 | |
4d804846 | 17320 | if (prototyped_function_p (die, cu)) |
a6c727b2 | 17321 | TYPE_PROTOTYPED (ftype) = 1; |
c906108c | 17322 | |
c055b101 CV |
17323 | /* Store the calling convention in the type if it's available in |
17324 | the subroutine die. Otherwise set the calling convention to | |
17325 | the default value DW_CC_normal. */ | |
17326 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
54fcddd0 UW |
17327 | if (attr) |
17328 | TYPE_CALLING_CONVENTION (ftype) = DW_UNSND (attr); | |
17329 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) | |
17330 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
17331 | else | |
17332 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 | 17333 | |
743649fd MW |
17334 | /* Record whether the function returns normally to its caller or not |
17335 | if the DWARF producer set that information. */ | |
17336 | attr = dwarf2_attr (die, DW_AT_noreturn, cu); | |
17337 | if (attr && (DW_UNSND (attr) != 0)) | |
17338 | TYPE_NO_RETURN (ftype) = 1; | |
17339 | ||
76c10ea2 GM |
17340 | /* We need to add the subroutine type to the die immediately so |
17341 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 17342 | declared as the same subroutine type. */ |
76c10ea2 | 17343 | set_die_type (die, ftype, cu); |
6e70227d | 17344 | |
639d11d3 | 17345 | if (die->child != NULL) |
c906108c | 17346 | { |
bb5ed363 | 17347 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 17348 | struct die_info *child_die; |
8072405b | 17349 | int nparams, iparams; |
c906108c SS |
17350 | |
17351 | /* Count the number of parameters. | |
17352 | FIXME: GDB currently ignores vararg functions, but knows about | |
17353 | vararg member functions. */ | |
8072405b | 17354 | nparams = 0; |
639d11d3 | 17355 | child_die = die->child; |
c906108c SS |
17356 | while (child_die && child_die->tag) |
17357 | { | |
17358 | if (child_die->tag == DW_TAG_formal_parameter) | |
17359 | nparams++; | |
17360 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 17361 | TYPE_VARARGS (ftype) = 1; |
c906108c SS |
17362 | child_die = sibling_die (child_die); |
17363 | } | |
17364 | ||
17365 | /* Allocate storage for parameters and fill them in. */ | |
17366 | TYPE_NFIELDS (ftype) = nparams; | |
17367 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 17368 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 17369 | |
8072405b JK |
17370 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
17371 | even if we error out during the parameters reading below. */ | |
17372 | for (iparams = 0; iparams < nparams; iparams++) | |
17373 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
17374 | ||
17375 | iparams = 0; | |
639d11d3 | 17376 | child_die = die->child; |
c906108c SS |
17377 | while (child_die && child_die->tag) |
17378 | { | |
17379 | if (child_die->tag == DW_TAG_formal_parameter) | |
17380 | { | |
3ce3b1ba PA |
17381 | struct type *arg_type; |
17382 | ||
17383 | /* DWARF version 2 has no clean way to discern C++ | |
17384 | static and non-static member functions. G++ helps | |
17385 | GDB by marking the first parameter for non-static | |
17386 | member functions (which is the this pointer) as | |
17387 | artificial. We pass this information to | |
17388 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
17389 | ||
17390 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
17391 | 4.5 does not yet generate. */ | |
e142c38c | 17392 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
17393 | if (attr) |
17394 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
17395 | else | |
9c37b5ae | 17396 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
3ce3b1ba PA |
17397 | arg_type = die_type (child_die, cu); |
17398 | ||
17399 | /* RealView does not mark THIS as const, which the testsuite | |
17400 | expects. GCC marks THIS as const in method definitions, | |
17401 | but not in the class specifications (GCC PR 43053). */ | |
17402 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
17403 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
17404 | { | |
17405 | int is_this = 0; | |
17406 | struct dwarf2_cu *arg_cu = cu; | |
17407 | const char *name = dwarf2_name (child_die, cu); | |
17408 | ||
17409 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
17410 | if (attr) | |
17411 | { | |
17412 | /* If the compiler emits this, use it. */ | |
17413 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
17414 | is_this = 1; | |
17415 | } | |
17416 | else if (name && strcmp (name, "this") == 0) | |
17417 | /* Function definitions will have the argument names. */ | |
17418 | is_this = 1; | |
17419 | else if (name == NULL && iparams == 0) | |
17420 | /* Declarations may not have the names, so like | |
17421 | elsewhere in GDB, assume an artificial first | |
17422 | argument is "this". */ | |
17423 | is_this = 1; | |
17424 | ||
17425 | if (is_this) | |
17426 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
17427 | arg_type, 0); | |
17428 | } | |
17429 | ||
17430 | TYPE_FIELD_TYPE (ftype, iparams) = arg_type; | |
c906108c SS |
17431 | iparams++; |
17432 | } | |
17433 | child_die = sibling_die (child_die); | |
17434 | } | |
17435 | } | |
17436 | ||
76c10ea2 | 17437 | return ftype; |
c906108c SS |
17438 | } |
17439 | ||
f792889a | 17440 | static struct type * |
e7c27a73 | 17441 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17442 | { |
518817b3 | 17443 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 17444 | const char *name = NULL; |
3c8e0968 | 17445 | struct type *this_type, *target_type; |
c906108c | 17446 | |
94af9270 | 17447 | name = dwarf2_full_name (NULL, die, cu); |
19f392bc UW |
17448 | this_type = init_type (objfile, TYPE_CODE_TYPEDEF, 0, name); |
17449 | TYPE_TARGET_STUB (this_type) = 1; | |
f792889a | 17450 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
17451 | target_type = die_type (die, cu); |
17452 | if (target_type != this_type) | |
17453 | TYPE_TARGET_TYPE (this_type) = target_type; | |
17454 | else | |
17455 | { | |
17456 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
17457 | spec and cause infinite loops in GDB. */ | |
b98664d3 | 17458 | complaint (_("Self-referential DW_TAG_typedef " |
9d8780f0 SM |
17459 | "- DIE at %s [in module %s]"), |
17460 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
3c8e0968 DE |
17461 | TYPE_TARGET_TYPE (this_type) = NULL; |
17462 | } | |
f792889a | 17463 | return this_type; |
c906108c SS |
17464 | } |
17465 | ||
9b790ce7 UW |
17466 | /* Allocate a floating-point type of size BITS and name NAME. Pass NAME_HINT |
17467 | (which may be different from NAME) to the architecture back-end to allow | |
17468 | it to guess the correct format if necessary. */ | |
17469 | ||
17470 | static struct type * | |
17471 | dwarf2_init_float_type (struct objfile *objfile, int bits, const char *name, | |
17472 | const char *name_hint) | |
17473 | { | |
17474 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
17475 | const struct floatformat **format; | |
17476 | struct type *type; | |
17477 | ||
17478 | format = gdbarch_floatformat_for_type (gdbarch, name_hint, bits); | |
17479 | if (format) | |
17480 | type = init_float_type (objfile, bits, name, format); | |
17481 | else | |
77b7c781 | 17482 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
9b790ce7 UW |
17483 | |
17484 | return type; | |
17485 | } | |
17486 | ||
c906108c SS |
17487 | /* Find a representation of a given base type and install |
17488 | it in the TYPE field of the die. */ | |
17489 | ||
f792889a | 17490 | static struct type * |
e7c27a73 | 17491 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17492 | { |
518817b3 | 17493 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c SS |
17494 | struct type *type; |
17495 | struct attribute *attr; | |
19f392bc | 17496 | int encoding = 0, bits = 0; |
15d034d0 | 17497 | const char *name; |
c906108c | 17498 | |
e142c38c | 17499 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
17500 | if (attr) |
17501 | { | |
17502 | encoding = DW_UNSND (attr); | |
17503 | } | |
e142c38c | 17504 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
17505 | if (attr) |
17506 | { | |
19f392bc | 17507 | bits = DW_UNSND (attr) * TARGET_CHAR_BIT; |
c906108c | 17508 | } |
39cbfefa | 17509 | name = dwarf2_name (die, cu); |
6ccb9162 | 17510 | if (!name) |
c906108c | 17511 | { |
b98664d3 | 17512 | complaint (_("DW_AT_name missing from DW_TAG_base_type")); |
c906108c | 17513 | } |
6ccb9162 UW |
17514 | |
17515 | switch (encoding) | |
c906108c | 17516 | { |
6ccb9162 UW |
17517 | case DW_ATE_address: |
17518 | /* Turn DW_ATE_address into a void * pointer. */ | |
77b7c781 | 17519 | type = init_type (objfile, TYPE_CODE_VOID, TARGET_CHAR_BIT, NULL); |
19f392bc | 17520 | type = init_pointer_type (objfile, bits, name, type); |
6ccb9162 UW |
17521 | break; |
17522 | case DW_ATE_boolean: | |
19f392bc | 17523 | type = init_boolean_type (objfile, bits, 1, name); |
6ccb9162 UW |
17524 | break; |
17525 | case DW_ATE_complex_float: | |
9b790ce7 | 17526 | type = dwarf2_init_float_type (objfile, bits / 2, NULL, name); |
19f392bc | 17527 | type = init_complex_type (objfile, name, type); |
6ccb9162 UW |
17528 | break; |
17529 | case DW_ATE_decimal_float: | |
19f392bc | 17530 | type = init_decfloat_type (objfile, bits, name); |
6ccb9162 UW |
17531 | break; |
17532 | case DW_ATE_float: | |
9b790ce7 | 17533 | type = dwarf2_init_float_type (objfile, bits, name, name); |
6ccb9162 UW |
17534 | break; |
17535 | case DW_ATE_signed: | |
19f392bc | 17536 | type = init_integer_type (objfile, bits, 0, name); |
6ccb9162 UW |
17537 | break; |
17538 | case DW_ATE_unsigned: | |
3b2b8fea TT |
17539 | if (cu->language == language_fortran |
17540 | && name | |
61012eef | 17541 | && startswith (name, "character(")) |
19f392bc UW |
17542 | type = init_character_type (objfile, bits, 1, name); |
17543 | else | |
17544 | type = init_integer_type (objfile, bits, 1, name); | |
6ccb9162 UW |
17545 | break; |
17546 | case DW_ATE_signed_char: | |
6e70227d | 17547 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
17548 | || cu->language == language_pascal |
17549 | || cu->language == language_fortran) | |
19f392bc UW |
17550 | type = init_character_type (objfile, bits, 0, name); |
17551 | else | |
17552 | type = init_integer_type (objfile, bits, 0, name); | |
6ccb9162 UW |
17553 | break; |
17554 | case DW_ATE_unsigned_char: | |
868a0084 | 17555 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea | 17556 | || cu->language == language_pascal |
c44af4eb TT |
17557 | || cu->language == language_fortran |
17558 | || cu->language == language_rust) | |
19f392bc UW |
17559 | type = init_character_type (objfile, bits, 1, name); |
17560 | else | |
17561 | type = init_integer_type (objfile, bits, 1, name); | |
6ccb9162 | 17562 | break; |
75079b2b | 17563 | case DW_ATE_UTF: |
53e710ac PA |
17564 | { |
17565 | gdbarch *arch = get_objfile_arch (objfile); | |
17566 | ||
17567 | if (bits == 16) | |
17568 | type = builtin_type (arch)->builtin_char16; | |
17569 | else if (bits == 32) | |
17570 | type = builtin_type (arch)->builtin_char32; | |
17571 | else | |
17572 | { | |
b98664d3 | 17573 | complaint (_("unsupported DW_ATE_UTF bit size: '%d'"), |
53e710ac PA |
17574 | bits); |
17575 | type = init_integer_type (objfile, bits, 1, name); | |
17576 | } | |
17577 | return set_die_type (die, type, cu); | |
17578 | } | |
75079b2b TT |
17579 | break; |
17580 | ||
6ccb9162 | 17581 | default: |
b98664d3 | 17582 | complaint (_("unsupported DW_AT_encoding: '%s'"), |
6ccb9162 | 17583 | dwarf_type_encoding_name (encoding)); |
77b7c781 | 17584 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
6ccb9162 | 17585 | break; |
c906108c | 17586 | } |
6ccb9162 | 17587 | |
0114d602 | 17588 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 17589 | TYPE_NOSIGN (type) = 1; |
0114d602 | 17590 | |
2b4424c3 TT |
17591 | maybe_set_alignment (cu, die, type); |
17592 | ||
f792889a | 17593 | return set_die_type (die, type, cu); |
c906108c SS |
17594 | } |
17595 | ||
80180f79 SA |
17596 | /* Parse dwarf attribute if it's a block, reference or constant and put the |
17597 | resulting value of the attribute into struct bound_prop. | |
17598 | Returns 1 if ATTR could be resolved into PROP, 0 otherwise. */ | |
17599 | ||
17600 | static int | |
17601 | attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die, | |
17602 | struct dwarf2_cu *cu, struct dynamic_prop *prop) | |
17603 | { | |
17604 | struct dwarf2_property_baton *baton; | |
518817b3 SM |
17605 | struct obstack *obstack |
17606 | = &cu->per_cu->dwarf2_per_objfile->objfile->objfile_obstack; | |
80180f79 SA |
17607 | |
17608 | if (attr == NULL || prop == NULL) | |
17609 | return 0; | |
17610 | ||
17611 | if (attr_form_is_block (attr)) | |
17612 | { | |
8d749320 | 17613 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
80180f79 SA |
17614 | baton->referenced_type = NULL; |
17615 | baton->locexpr.per_cu = cu->per_cu; | |
17616 | baton->locexpr.size = DW_BLOCK (attr)->size; | |
17617 | baton->locexpr.data = DW_BLOCK (attr)->data; | |
17618 | prop->data.baton = baton; | |
17619 | prop->kind = PROP_LOCEXPR; | |
17620 | gdb_assert (prop->data.baton != NULL); | |
17621 | } | |
17622 | else if (attr_form_is_ref (attr)) | |
17623 | { | |
17624 | struct dwarf2_cu *target_cu = cu; | |
17625 | struct die_info *target_die; | |
17626 | struct attribute *target_attr; | |
17627 | ||
17628 | target_die = follow_die_ref (die, attr, &target_cu); | |
17629 | target_attr = dwarf2_attr (target_die, DW_AT_location, target_cu); | |
df25ebbd JB |
17630 | if (target_attr == NULL) |
17631 | target_attr = dwarf2_attr (target_die, DW_AT_data_member_location, | |
17632 | target_cu); | |
80180f79 SA |
17633 | if (target_attr == NULL) |
17634 | return 0; | |
17635 | ||
df25ebbd | 17636 | switch (target_attr->name) |
80180f79 | 17637 | { |
df25ebbd JB |
17638 | case DW_AT_location: |
17639 | if (attr_form_is_section_offset (target_attr)) | |
17640 | { | |
8d749320 | 17641 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
df25ebbd JB |
17642 | baton->referenced_type = die_type (target_die, target_cu); |
17643 | fill_in_loclist_baton (cu, &baton->loclist, target_attr); | |
17644 | prop->data.baton = baton; | |
17645 | prop->kind = PROP_LOCLIST; | |
17646 | gdb_assert (prop->data.baton != NULL); | |
17647 | } | |
17648 | else if (attr_form_is_block (target_attr)) | |
17649 | { | |
8d749320 | 17650 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
df25ebbd JB |
17651 | baton->referenced_type = die_type (target_die, target_cu); |
17652 | baton->locexpr.per_cu = cu->per_cu; | |
17653 | baton->locexpr.size = DW_BLOCK (target_attr)->size; | |
17654 | baton->locexpr.data = DW_BLOCK (target_attr)->data; | |
17655 | prop->data.baton = baton; | |
17656 | prop->kind = PROP_LOCEXPR; | |
17657 | gdb_assert (prop->data.baton != NULL); | |
17658 | } | |
17659 | else | |
17660 | { | |
17661 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
17662 | "dynamic property"); | |
17663 | return 0; | |
17664 | } | |
17665 | break; | |
17666 | case DW_AT_data_member_location: | |
17667 | { | |
17668 | LONGEST offset; | |
17669 | ||
17670 | if (!handle_data_member_location (target_die, target_cu, | |
17671 | &offset)) | |
17672 | return 0; | |
17673 | ||
8d749320 | 17674 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
6ad395a7 JB |
17675 | baton->referenced_type = read_type_die (target_die->parent, |
17676 | target_cu); | |
df25ebbd JB |
17677 | baton->offset_info.offset = offset; |
17678 | baton->offset_info.type = die_type (target_die, target_cu); | |
17679 | prop->data.baton = baton; | |
17680 | prop->kind = PROP_ADDR_OFFSET; | |
17681 | break; | |
17682 | } | |
80180f79 SA |
17683 | } |
17684 | } | |
17685 | else if (attr_form_is_constant (attr)) | |
17686 | { | |
17687 | prop->data.const_val = dwarf2_get_attr_constant_value (attr, 0); | |
17688 | prop->kind = PROP_CONST; | |
17689 | } | |
17690 | else | |
17691 | { | |
17692 | dwarf2_invalid_attrib_class_complaint (dwarf_form_name (attr->form), | |
17693 | dwarf2_name (die, cu)); | |
17694 | return 0; | |
17695 | } | |
17696 | ||
17697 | return 1; | |
17698 | } | |
17699 | ||
a02abb62 JB |
17700 | /* Read the given DW_AT_subrange DIE. */ |
17701 | ||
f792889a | 17702 | static struct type * |
a02abb62 JB |
17703 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
17704 | { | |
4c9ad8c2 | 17705 | struct type *base_type, *orig_base_type; |
a02abb62 JB |
17706 | struct type *range_type; |
17707 | struct attribute *attr; | |
729efb13 | 17708 | struct dynamic_prop low, high; |
4fae6e18 | 17709 | int low_default_is_valid; |
c451ebe5 | 17710 | int high_bound_is_count = 0; |
15d034d0 | 17711 | const char *name; |
43bbcdc2 | 17712 | LONGEST negative_mask; |
e77813c8 | 17713 | |
4c9ad8c2 TT |
17714 | orig_base_type = die_type (die, cu); |
17715 | /* If ORIG_BASE_TYPE is a typedef, it will not be TYPE_UNSIGNED, | |
17716 | whereas the real type might be. So, we use ORIG_BASE_TYPE when | |
17717 | creating the range type, but we use the result of check_typedef | |
17718 | when examining properties of the type. */ | |
17719 | base_type = check_typedef (orig_base_type); | |
a02abb62 | 17720 | |
7e314c57 JK |
17721 | /* The die_type call above may have already set the type for this DIE. */ |
17722 | range_type = get_die_type (die, cu); | |
17723 | if (range_type) | |
17724 | return range_type; | |
17725 | ||
729efb13 SA |
17726 | low.kind = PROP_CONST; |
17727 | high.kind = PROP_CONST; | |
17728 | high.data.const_val = 0; | |
17729 | ||
4fae6e18 JK |
17730 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
17731 | omitting DW_AT_lower_bound. */ | |
17732 | switch (cu->language) | |
6e70227d | 17733 | { |
4fae6e18 JK |
17734 | case language_c: |
17735 | case language_cplus: | |
729efb13 | 17736 | low.data.const_val = 0; |
4fae6e18 JK |
17737 | low_default_is_valid = 1; |
17738 | break; | |
17739 | case language_fortran: | |
729efb13 | 17740 | low.data.const_val = 1; |
4fae6e18 JK |
17741 | low_default_is_valid = 1; |
17742 | break; | |
17743 | case language_d: | |
4fae6e18 | 17744 | case language_objc: |
c44af4eb | 17745 | case language_rust: |
729efb13 | 17746 | low.data.const_val = 0; |
4fae6e18 JK |
17747 | low_default_is_valid = (cu->header.version >= 4); |
17748 | break; | |
17749 | case language_ada: | |
17750 | case language_m2: | |
17751 | case language_pascal: | |
729efb13 | 17752 | low.data.const_val = 1; |
4fae6e18 JK |
17753 | low_default_is_valid = (cu->header.version >= 4); |
17754 | break; | |
17755 | default: | |
729efb13 | 17756 | low.data.const_val = 0; |
4fae6e18 JK |
17757 | low_default_is_valid = 0; |
17758 | break; | |
a02abb62 JB |
17759 | } |
17760 | ||
e142c38c | 17761 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 | 17762 | if (attr) |
11c1ba78 | 17763 | attr_to_dynamic_prop (attr, die, cu, &low); |
4fae6e18 | 17764 | else if (!low_default_is_valid) |
b98664d3 | 17765 | complaint (_("Missing DW_AT_lower_bound " |
9d8780f0 SM |
17766 | "- DIE at %s [in module %s]"), |
17767 | sect_offset_str (die->sect_off), | |
518817b3 | 17768 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
a02abb62 | 17769 | |
506f5c41 TV |
17770 | struct attribute *attr_ub, *attr_count; |
17771 | attr = attr_ub = dwarf2_attr (die, DW_AT_upper_bound, cu); | |
80180f79 | 17772 | if (!attr_to_dynamic_prop (attr, die, cu, &high)) |
e77813c8 | 17773 | { |
506f5c41 | 17774 | attr = attr_count = dwarf2_attr (die, DW_AT_count, cu); |
c451ebe5 | 17775 | if (attr_to_dynamic_prop (attr, die, cu, &high)) |
6b662e19 | 17776 | { |
c451ebe5 SA |
17777 | /* If bounds are constant do the final calculation here. */ |
17778 | if (low.kind == PROP_CONST && high.kind == PROP_CONST) | |
17779 | high.data.const_val = low.data.const_val + high.data.const_val - 1; | |
17780 | else | |
17781 | high_bound_is_count = 1; | |
c2ff108b | 17782 | } |
506f5c41 TV |
17783 | else |
17784 | { | |
17785 | if (attr_ub != NULL) | |
17786 | complaint (_("Unresolved DW_AT_upper_bound " | |
17787 | "- DIE at %s [in module %s]"), | |
17788 | sect_offset_str (die->sect_off), | |
17789 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
17790 | if (attr_count != NULL) | |
17791 | complaint (_("Unresolved DW_AT_count " | |
17792 | "- DIE at %s [in module %s]"), | |
17793 | sect_offset_str (die->sect_off), | |
17794 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
17795 | } | |
17796 | ||
e77813c8 PM |
17797 | } |
17798 | ||
17799 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
17800 | without specifying a base type. | |
17801 | In that case, the base type must be set to the type of | |
17802 | the lower bound, upper bound or count, in that order, if any of these | |
17803 | three attributes references an object that has a type. | |
17804 | If no base type is found, the Dwarf-2 specifications say that | |
17805 | a signed integer type of size equal to the size of an address should | |
17806 | be used. | |
17807 | For the following C code: `extern char gdb_int [];' | |
17808 | GCC produces an empty range DIE. | |
17809 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
0963b4bd | 17810 | high bound or count are not yet handled by this code. */ |
e77813c8 PM |
17811 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) |
17812 | { | |
518817b3 | 17813 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e77813c8 PM |
17814 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
17815 | int addr_size = gdbarch_addr_bit (gdbarch) /8; | |
17816 | struct type *int_type = objfile_type (objfile)->builtin_int; | |
17817 | ||
17818 | /* Test "int", "long int", and "long long int" objfile types, | |
17819 | and select the first one having a size above or equal to the | |
17820 | architecture address size. */ | |
17821 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
17822 | base_type = int_type; | |
17823 | else | |
17824 | { | |
17825 | int_type = objfile_type (objfile)->builtin_long; | |
17826 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
17827 | base_type = int_type; | |
17828 | else | |
17829 | { | |
17830 | int_type = objfile_type (objfile)->builtin_long_long; | |
17831 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
17832 | base_type = int_type; | |
17833 | } | |
17834 | } | |
17835 | } | |
a02abb62 | 17836 | |
dbb9c2b1 JB |
17837 | /* Normally, the DWARF producers are expected to use a signed |
17838 | constant form (Eg. DW_FORM_sdata) to express negative bounds. | |
17839 | But this is unfortunately not always the case, as witnessed | |
17840 | with GCC, for instance, where the ambiguous DW_FORM_dataN form | |
17841 | is used instead. To work around that ambiguity, we treat | |
17842 | the bounds as signed, and thus sign-extend their values, when | |
17843 | the base type is signed. */ | |
6e70227d | 17844 | negative_mask = |
66c6502d | 17845 | -((LONGEST) 1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1)); |
729efb13 SA |
17846 | if (low.kind == PROP_CONST |
17847 | && !TYPE_UNSIGNED (base_type) && (low.data.const_val & negative_mask)) | |
17848 | low.data.const_val |= negative_mask; | |
17849 | if (high.kind == PROP_CONST | |
17850 | && !TYPE_UNSIGNED (base_type) && (high.data.const_val & negative_mask)) | |
17851 | high.data.const_val |= negative_mask; | |
43bbcdc2 | 17852 | |
729efb13 | 17853 | range_type = create_range_type (NULL, orig_base_type, &low, &high); |
a02abb62 | 17854 | |
c451ebe5 SA |
17855 | if (high_bound_is_count) |
17856 | TYPE_RANGE_DATA (range_type)->flag_upper_bound_is_count = 1; | |
17857 | ||
c2ff108b JK |
17858 | /* Ada expects an empty array on no boundary attributes. */ |
17859 | if (attr == NULL && cu->language != language_ada) | |
729efb13 | 17860 | TYPE_HIGH_BOUND_KIND (range_type) = PROP_UNDEFINED; |
c2ff108b | 17861 | |
39cbfefa DJ |
17862 | name = dwarf2_name (die, cu); |
17863 | if (name) | |
17864 | TYPE_NAME (range_type) = name; | |
6e70227d | 17865 | |
e142c38c | 17866 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
17867 | if (attr) |
17868 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
17869 | ||
2b4424c3 TT |
17870 | maybe_set_alignment (cu, die, range_type); |
17871 | ||
7e314c57 JK |
17872 | set_die_type (die, range_type, cu); |
17873 | ||
17874 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
17875 | set_descriptive_type (range_type, die, cu); |
17876 | ||
7e314c57 | 17877 | return range_type; |
a02abb62 | 17878 | } |
6e70227d | 17879 | |
f792889a | 17880 | static struct type * |
81a17f79 JB |
17881 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
17882 | { | |
17883 | struct type *type; | |
81a17f79 | 17884 | |
518817b3 SM |
17885 | type = init_type (cu->per_cu->dwarf2_per_objfile->objfile, TYPE_CODE_VOID,0, |
17886 | NULL); | |
0114d602 | 17887 | TYPE_NAME (type) = dwarf2_name (die, cu); |
81a17f79 | 17888 | |
74a2f8ff JB |
17889 | /* In Ada, an unspecified type is typically used when the description |
17890 | of the type is defered to a different unit. When encountering | |
17891 | such a type, we treat it as a stub, and try to resolve it later on, | |
17892 | when needed. */ | |
17893 | if (cu->language == language_ada) | |
17894 | TYPE_STUB (type) = 1; | |
17895 | ||
f792889a | 17896 | return set_die_type (die, type, cu); |
81a17f79 | 17897 | } |
a02abb62 | 17898 | |
639d11d3 DC |
17899 | /* Read a single die and all its descendents. Set the die's sibling |
17900 | field to NULL; set other fields in the die correctly, and set all | |
17901 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
17902 | location of the info_ptr after reading all of those dies. PARENT | |
17903 | is the parent of the die in question. */ | |
17904 | ||
17905 | static struct die_info * | |
dee91e82 | 17906 | read_die_and_children (const struct die_reader_specs *reader, |
d521ce57 TT |
17907 | const gdb_byte *info_ptr, |
17908 | const gdb_byte **new_info_ptr, | |
dee91e82 | 17909 | struct die_info *parent) |
639d11d3 DC |
17910 | { |
17911 | struct die_info *die; | |
d521ce57 | 17912 | const gdb_byte *cur_ptr; |
639d11d3 DC |
17913 | int has_children; |
17914 | ||
bf6af496 | 17915 | cur_ptr = read_full_die_1 (reader, &die, info_ptr, &has_children, 0); |
1d325ec1 DJ |
17916 | if (die == NULL) |
17917 | { | |
17918 | *new_info_ptr = cur_ptr; | |
17919 | return NULL; | |
17920 | } | |
93311388 | 17921 | store_in_ref_table (die, reader->cu); |
639d11d3 DC |
17922 | |
17923 | if (has_children) | |
bf6af496 | 17924 | die->child = read_die_and_siblings_1 (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
17925 | else |
17926 | { | |
17927 | die->child = NULL; | |
17928 | *new_info_ptr = cur_ptr; | |
17929 | } | |
17930 | ||
17931 | die->sibling = NULL; | |
17932 | die->parent = parent; | |
17933 | return die; | |
17934 | } | |
17935 | ||
17936 | /* Read a die, all of its descendents, and all of its siblings; set | |
17937 | all of the fields of all of the dies correctly. Arguments are as | |
17938 | in read_die_and_children. */ | |
17939 | ||
17940 | static struct die_info * | |
bf6af496 | 17941 | read_die_and_siblings_1 (const struct die_reader_specs *reader, |
d521ce57 TT |
17942 | const gdb_byte *info_ptr, |
17943 | const gdb_byte **new_info_ptr, | |
bf6af496 | 17944 | struct die_info *parent) |
639d11d3 DC |
17945 | { |
17946 | struct die_info *first_die, *last_sibling; | |
d521ce57 | 17947 | const gdb_byte *cur_ptr; |
639d11d3 | 17948 | |
c906108c | 17949 | cur_ptr = info_ptr; |
639d11d3 DC |
17950 | first_die = last_sibling = NULL; |
17951 | ||
17952 | while (1) | |
c906108c | 17953 | { |
639d11d3 | 17954 | struct die_info *die |
dee91e82 | 17955 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 17956 | |
1d325ec1 | 17957 | if (die == NULL) |
c906108c | 17958 | { |
639d11d3 DC |
17959 | *new_info_ptr = cur_ptr; |
17960 | return first_die; | |
c906108c | 17961 | } |
1d325ec1 DJ |
17962 | |
17963 | if (!first_die) | |
17964 | first_die = die; | |
c906108c | 17965 | else |
1d325ec1 DJ |
17966 | last_sibling->sibling = die; |
17967 | ||
17968 | last_sibling = die; | |
c906108c | 17969 | } |
c906108c SS |
17970 | } |
17971 | ||
bf6af496 DE |
17972 | /* Read a die, all of its descendents, and all of its siblings; set |
17973 | all of the fields of all of the dies correctly. Arguments are as | |
17974 | in read_die_and_children. | |
17975 | This the main entry point for reading a DIE and all its children. */ | |
17976 | ||
17977 | static struct die_info * | |
17978 | read_die_and_siblings (const struct die_reader_specs *reader, | |
d521ce57 TT |
17979 | const gdb_byte *info_ptr, |
17980 | const gdb_byte **new_info_ptr, | |
bf6af496 DE |
17981 | struct die_info *parent) |
17982 | { | |
17983 | struct die_info *die = read_die_and_siblings_1 (reader, info_ptr, | |
17984 | new_info_ptr, parent); | |
17985 | ||
b4f54984 | 17986 | if (dwarf_die_debug) |
bf6af496 DE |
17987 | { |
17988 | fprintf_unfiltered (gdb_stdlog, | |
17989 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 17990 | get_section_name (reader->die_section), |
bf6af496 DE |
17991 | (unsigned) (info_ptr - reader->die_section->buffer), |
17992 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 17993 | dump_die (die, dwarf_die_debug); |
bf6af496 DE |
17994 | } |
17995 | ||
17996 | return die; | |
17997 | } | |
17998 | ||
3019eac3 DE |
17999 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
18000 | attributes. | |
18001 | The caller is responsible for filling in the extra attributes | |
18002 | and updating (*DIEP)->num_attrs. | |
18003 | Set DIEP to point to a newly allocated die with its information, | |
18004 | except for its child, sibling, and parent fields. | |
18005 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
93311388 | 18006 | |
d521ce57 | 18007 | static const gdb_byte * |
3019eac3 | 18008 | read_full_die_1 (const struct die_reader_specs *reader, |
d521ce57 | 18009 | struct die_info **diep, const gdb_byte *info_ptr, |
3019eac3 | 18010 | int *has_children, int num_extra_attrs) |
93311388 | 18011 | { |
b64f50a1 | 18012 | unsigned int abbrev_number, bytes_read, i; |
93311388 DE |
18013 | struct abbrev_info *abbrev; |
18014 | struct die_info *die; | |
18015 | struct dwarf2_cu *cu = reader->cu; | |
18016 | bfd *abfd = reader->abfd; | |
18017 | ||
9c541725 | 18018 | sect_offset sect_off = (sect_offset) (info_ptr - reader->buffer); |
93311388 DE |
18019 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
18020 | info_ptr += bytes_read; | |
18021 | if (!abbrev_number) | |
18022 | { | |
18023 | *diep = NULL; | |
18024 | *has_children = 0; | |
18025 | return info_ptr; | |
18026 | } | |
18027 | ||
685af9cd | 18028 | abbrev = reader->abbrev_table->lookup_abbrev (abbrev_number); |
93311388 | 18029 | if (!abbrev) |
348e048f DE |
18030 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
18031 | abbrev_number, | |
18032 | bfd_get_filename (abfd)); | |
18033 | ||
3019eac3 | 18034 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
9c541725 | 18035 | die->sect_off = sect_off; |
93311388 DE |
18036 | die->tag = abbrev->tag; |
18037 | die->abbrev = abbrev_number; | |
18038 | ||
3019eac3 DE |
18039 | /* Make the result usable. |
18040 | The caller needs to update num_attrs after adding the extra | |
18041 | attributes. */ | |
93311388 DE |
18042 | die->num_attrs = abbrev->num_attrs; |
18043 | ||
18044 | for (i = 0; i < abbrev->num_attrs; ++i) | |
dee91e82 DE |
18045 | info_ptr = read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], |
18046 | info_ptr); | |
93311388 DE |
18047 | |
18048 | *diep = die; | |
18049 | *has_children = abbrev->has_children; | |
18050 | return info_ptr; | |
18051 | } | |
18052 | ||
3019eac3 DE |
18053 | /* Read a die and all its attributes. |
18054 | Set DIEP to point to a newly allocated die with its information, | |
18055 | except for its child, sibling, and parent fields. | |
18056 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
18057 | ||
d521ce57 | 18058 | static const gdb_byte * |
3019eac3 | 18059 | read_full_die (const struct die_reader_specs *reader, |
d521ce57 | 18060 | struct die_info **diep, const gdb_byte *info_ptr, |
3019eac3 DE |
18061 | int *has_children) |
18062 | { | |
d521ce57 | 18063 | const gdb_byte *result; |
bf6af496 DE |
18064 | |
18065 | result = read_full_die_1 (reader, diep, info_ptr, has_children, 0); | |
18066 | ||
b4f54984 | 18067 | if (dwarf_die_debug) |
bf6af496 DE |
18068 | { |
18069 | fprintf_unfiltered (gdb_stdlog, | |
18070 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 18071 | get_section_name (reader->die_section), |
bf6af496 DE |
18072 | (unsigned) (info_ptr - reader->die_section->buffer), |
18073 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 18074 | dump_die (*diep, dwarf_die_debug); |
bf6af496 DE |
18075 | } |
18076 | ||
18077 | return result; | |
3019eac3 | 18078 | } |
433df2d4 DE |
18079 | \f |
18080 | /* Abbreviation tables. | |
3019eac3 | 18081 | |
433df2d4 | 18082 | In DWARF version 2, the description of the debugging information is |
c906108c SS |
18083 | stored in a separate .debug_abbrev section. Before we read any |
18084 | dies from a section we read in all abbreviations and install them | |
433df2d4 DE |
18085 | in a hash table. */ |
18086 | ||
18087 | /* Allocate space for a struct abbrev_info object in ABBREV_TABLE. */ | |
18088 | ||
685af9cd TT |
18089 | struct abbrev_info * |
18090 | abbrev_table::alloc_abbrev () | |
433df2d4 DE |
18091 | { |
18092 | struct abbrev_info *abbrev; | |
18093 | ||
685af9cd | 18094 | abbrev = XOBNEW (&abbrev_obstack, struct abbrev_info); |
433df2d4 | 18095 | memset (abbrev, 0, sizeof (struct abbrev_info)); |
8d749320 | 18096 | |
433df2d4 DE |
18097 | return abbrev; |
18098 | } | |
18099 | ||
18100 | /* Add an abbreviation to the table. */ | |
c906108c | 18101 | |
685af9cd TT |
18102 | void |
18103 | abbrev_table::add_abbrev (unsigned int abbrev_number, | |
18104 | struct abbrev_info *abbrev) | |
433df2d4 DE |
18105 | { |
18106 | unsigned int hash_number; | |
18107 | ||
18108 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
4a17f768 YQ |
18109 | abbrev->next = m_abbrevs[hash_number]; |
18110 | m_abbrevs[hash_number] = abbrev; | |
433df2d4 | 18111 | } |
dee91e82 | 18112 | |
433df2d4 DE |
18113 | /* Look up an abbrev in the table. |
18114 | Returns NULL if the abbrev is not found. */ | |
18115 | ||
685af9cd TT |
18116 | struct abbrev_info * |
18117 | abbrev_table::lookup_abbrev (unsigned int abbrev_number) | |
c906108c | 18118 | { |
433df2d4 DE |
18119 | unsigned int hash_number; |
18120 | struct abbrev_info *abbrev; | |
18121 | ||
18122 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
4a17f768 | 18123 | abbrev = m_abbrevs[hash_number]; |
433df2d4 DE |
18124 | |
18125 | while (abbrev) | |
18126 | { | |
18127 | if (abbrev->number == abbrev_number) | |
18128 | return abbrev; | |
18129 | abbrev = abbrev->next; | |
18130 | } | |
18131 | return NULL; | |
18132 | } | |
18133 | ||
18134 | /* Read in an abbrev table. */ | |
18135 | ||
685af9cd | 18136 | static abbrev_table_up |
ed2dc618 SM |
18137 | abbrev_table_read_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
18138 | struct dwarf2_section_info *section, | |
9c541725 | 18139 | sect_offset sect_off) |
433df2d4 DE |
18140 | { |
18141 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
a32a8923 | 18142 | bfd *abfd = get_section_bfd_owner (section); |
d521ce57 | 18143 | const gdb_byte *abbrev_ptr; |
c906108c SS |
18144 | struct abbrev_info *cur_abbrev; |
18145 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
433df2d4 | 18146 | unsigned int abbrev_form; |
f3dd6933 DJ |
18147 | struct attr_abbrev *cur_attrs; |
18148 | unsigned int allocated_attrs; | |
c906108c | 18149 | |
685af9cd | 18150 | abbrev_table_up abbrev_table (new struct abbrev_table (sect_off)); |
c906108c | 18151 | |
433df2d4 | 18152 | dwarf2_read_section (objfile, section); |
9c541725 | 18153 | abbrev_ptr = section->buffer + to_underlying (sect_off); |
c906108c SS |
18154 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
18155 | abbrev_ptr += bytes_read; | |
18156 | ||
f3dd6933 | 18157 | allocated_attrs = ATTR_ALLOC_CHUNK; |
8d749320 | 18158 | cur_attrs = XNEWVEC (struct attr_abbrev, allocated_attrs); |
6e70227d | 18159 | |
0963b4bd | 18160 | /* Loop until we reach an abbrev number of 0. */ |
c906108c SS |
18161 | while (abbrev_number) |
18162 | { | |
685af9cd | 18163 | cur_abbrev = abbrev_table->alloc_abbrev (); |
c906108c SS |
18164 | |
18165 | /* read in abbrev header */ | |
18166 | cur_abbrev->number = abbrev_number; | |
aead7601 SM |
18167 | cur_abbrev->tag |
18168 | = (enum dwarf_tag) read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
c906108c SS |
18169 | abbrev_ptr += bytes_read; |
18170 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
18171 | abbrev_ptr += 1; | |
18172 | ||
18173 | /* now read in declarations */ | |
22d2f3ab | 18174 | for (;;) |
c906108c | 18175 | { |
43988095 JK |
18176 | LONGEST implicit_const; |
18177 | ||
22d2f3ab JK |
18178 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
18179 | abbrev_ptr += bytes_read; | |
18180 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
18181 | abbrev_ptr += bytes_read; | |
43988095 JK |
18182 | if (abbrev_form == DW_FORM_implicit_const) |
18183 | { | |
18184 | implicit_const = read_signed_leb128 (abfd, abbrev_ptr, | |
18185 | &bytes_read); | |
18186 | abbrev_ptr += bytes_read; | |
18187 | } | |
18188 | else | |
18189 | { | |
18190 | /* Initialize it due to a false compiler warning. */ | |
18191 | implicit_const = -1; | |
18192 | } | |
22d2f3ab JK |
18193 | |
18194 | if (abbrev_name == 0) | |
18195 | break; | |
18196 | ||
f3dd6933 | 18197 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 18198 | { |
f3dd6933 DJ |
18199 | allocated_attrs += ATTR_ALLOC_CHUNK; |
18200 | cur_attrs | |
224c3ddb | 18201 | = XRESIZEVEC (struct attr_abbrev, cur_attrs, allocated_attrs); |
c906108c | 18202 | } |
ae038cb0 | 18203 | |
aead7601 SM |
18204 | cur_attrs[cur_abbrev->num_attrs].name |
18205 | = (enum dwarf_attribute) abbrev_name; | |
22d2f3ab | 18206 | cur_attrs[cur_abbrev->num_attrs].form |
aead7601 | 18207 | = (enum dwarf_form) abbrev_form; |
43988095 | 18208 | cur_attrs[cur_abbrev->num_attrs].implicit_const = implicit_const; |
22d2f3ab | 18209 | ++cur_abbrev->num_attrs; |
c906108c SS |
18210 | } |
18211 | ||
8d749320 SM |
18212 | cur_abbrev->attrs = |
18213 | XOBNEWVEC (&abbrev_table->abbrev_obstack, struct attr_abbrev, | |
18214 | cur_abbrev->num_attrs); | |
f3dd6933 DJ |
18215 | memcpy (cur_abbrev->attrs, cur_attrs, |
18216 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
18217 | ||
685af9cd | 18218 | abbrev_table->add_abbrev (abbrev_number, cur_abbrev); |
c906108c SS |
18219 | |
18220 | /* Get next abbreviation. | |
18221 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
18222 | always properly terminated with an abbrev number of 0. |
18223 | Exit loop if we encounter an abbreviation which we have | |
18224 | already read (which means we are about to read the abbreviations | |
18225 | for the next compile unit) or if the end of the abbreviation | |
18226 | table is reached. */ | |
433df2d4 | 18227 | if ((unsigned int) (abbrev_ptr - section->buffer) >= section->size) |
c906108c SS |
18228 | break; |
18229 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
18230 | abbrev_ptr += bytes_read; | |
685af9cd | 18231 | if (abbrev_table->lookup_abbrev (abbrev_number) != NULL) |
c906108c SS |
18232 | break; |
18233 | } | |
f3dd6933 DJ |
18234 | |
18235 | xfree (cur_attrs); | |
433df2d4 | 18236 | return abbrev_table; |
c906108c SS |
18237 | } |
18238 | ||
72bf9492 DJ |
18239 | /* Returns nonzero if TAG represents a type that we might generate a partial |
18240 | symbol for. */ | |
18241 | ||
18242 | static int | |
18243 | is_type_tag_for_partial (int tag) | |
18244 | { | |
18245 | switch (tag) | |
18246 | { | |
18247 | #if 0 | |
18248 | /* Some types that would be reasonable to generate partial symbols for, | |
18249 | that we don't at present. */ | |
18250 | case DW_TAG_array_type: | |
18251 | case DW_TAG_file_type: | |
18252 | case DW_TAG_ptr_to_member_type: | |
18253 | case DW_TAG_set_type: | |
18254 | case DW_TAG_string_type: | |
18255 | case DW_TAG_subroutine_type: | |
18256 | #endif | |
18257 | case DW_TAG_base_type: | |
18258 | case DW_TAG_class_type: | |
680b30c7 | 18259 | case DW_TAG_interface_type: |
72bf9492 DJ |
18260 | case DW_TAG_enumeration_type: |
18261 | case DW_TAG_structure_type: | |
18262 | case DW_TAG_subrange_type: | |
18263 | case DW_TAG_typedef: | |
18264 | case DW_TAG_union_type: | |
18265 | return 1; | |
18266 | default: | |
18267 | return 0; | |
18268 | } | |
18269 | } | |
18270 | ||
18271 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
18272 | ||
18273 | static struct partial_die_info * | |
dee91e82 | 18274 | load_partial_dies (const struct die_reader_specs *reader, |
d521ce57 | 18275 | const gdb_byte *info_ptr, int building_psymtab) |
72bf9492 | 18276 | { |
dee91e82 | 18277 | struct dwarf2_cu *cu = reader->cu; |
518817b3 | 18278 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
72bf9492 | 18279 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; |
72bf9492 | 18280 | unsigned int bytes_read; |
5afb4e99 | 18281 | unsigned int load_all = 0; |
72bf9492 DJ |
18282 | int nesting_level = 1; |
18283 | ||
18284 | parent_die = NULL; | |
18285 | last_die = NULL; | |
18286 | ||
7adf1e79 DE |
18287 | gdb_assert (cu->per_cu != NULL); |
18288 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
18289 | load_all = 1; |
18290 | ||
72bf9492 DJ |
18291 | cu->partial_dies |
18292 | = htab_create_alloc_ex (cu->header.length / 12, | |
18293 | partial_die_hash, | |
18294 | partial_die_eq, | |
18295 | NULL, | |
18296 | &cu->comp_unit_obstack, | |
18297 | hashtab_obstack_allocate, | |
18298 | dummy_obstack_deallocate); | |
18299 | ||
72bf9492 DJ |
18300 | while (1) |
18301 | { | |
685af9cd | 18302 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); |
72bf9492 DJ |
18303 | |
18304 | /* A NULL abbrev means the end of a series of children. */ | |
18305 | if (abbrev == NULL) | |
18306 | { | |
18307 | if (--nesting_level == 0) | |
cd9983dd YQ |
18308 | return first_die; |
18309 | ||
72bf9492 DJ |
18310 | info_ptr += bytes_read; |
18311 | last_die = parent_die; | |
18312 | parent_die = parent_die->die_parent; | |
18313 | continue; | |
18314 | } | |
18315 | ||
98bfdba5 PA |
18316 | /* Check for template arguments. We never save these; if |
18317 | they're seen, we just mark the parent, and go on our way. */ | |
18318 | if (parent_die != NULL | |
18319 | && cu->language == language_cplus | |
18320 | && (abbrev->tag == DW_TAG_template_type_param | |
18321 | || abbrev->tag == DW_TAG_template_value_param)) | |
18322 | { | |
18323 | parent_die->has_template_arguments = 1; | |
18324 | ||
18325 | if (!load_all) | |
18326 | { | |
18327 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 18328 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
18329 | continue; |
18330 | } | |
18331 | } | |
18332 | ||
0d99eb77 | 18333 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
18334 | Skip their other children. */ |
18335 | if (!load_all | |
18336 | && cu->language == language_cplus | |
18337 | && parent_die != NULL | |
18338 | && parent_die->tag == DW_TAG_subprogram) | |
18339 | { | |
dee91e82 | 18340 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
18341 | continue; |
18342 | } | |
18343 | ||
5afb4e99 DJ |
18344 | /* Check whether this DIE is interesting enough to save. Normally |
18345 | we would not be interested in members here, but there may be | |
18346 | later variables referencing them via DW_AT_specification (for | |
18347 | static members). */ | |
18348 | if (!load_all | |
18349 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 18350 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
18351 | && abbrev->tag != DW_TAG_enumerator |
18352 | && abbrev->tag != DW_TAG_subprogram | |
b1dc1806 | 18353 | && abbrev->tag != DW_TAG_inlined_subroutine |
bc30ff58 | 18354 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 18355 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 18356 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 18357 | && abbrev->tag != DW_TAG_module |
95554aad | 18358 | && abbrev->tag != DW_TAG_member |
74921315 KS |
18359 | && abbrev->tag != DW_TAG_imported_unit |
18360 | && abbrev->tag != DW_TAG_imported_declaration) | |
72bf9492 DJ |
18361 | { |
18362 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 18363 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
18364 | continue; |
18365 | } | |
18366 | ||
6f06d47b YQ |
18367 | struct partial_die_info pdi ((sect_offset) (info_ptr - reader->buffer), |
18368 | abbrev); | |
cd9983dd | 18369 | |
48fbe735 | 18370 | info_ptr = pdi.read (reader, *abbrev, info_ptr + bytes_read); |
72bf9492 DJ |
18371 | |
18372 | /* This two-pass algorithm for processing partial symbols has a | |
18373 | high cost in cache pressure. Thus, handle some simple cases | |
18374 | here which cover the majority of C partial symbols. DIEs | |
18375 | which neither have specification tags in them, nor could have | |
18376 | specification tags elsewhere pointing at them, can simply be | |
18377 | processed and discarded. | |
18378 | ||
18379 | This segment is also optional; scan_partial_symbols and | |
18380 | add_partial_symbol will handle these DIEs if we chain | |
18381 | them in normally. When compilers which do not emit large | |
18382 | quantities of duplicate debug information are more common, | |
18383 | this code can probably be removed. */ | |
18384 | ||
18385 | /* Any complete simple types at the top level (pretty much all | |
18386 | of them, for a language without namespaces), can be processed | |
18387 | directly. */ | |
18388 | if (parent_die == NULL | |
cd9983dd YQ |
18389 | && pdi.has_specification == 0 |
18390 | && pdi.is_declaration == 0 | |
18391 | && ((pdi.tag == DW_TAG_typedef && !pdi.has_children) | |
18392 | || pdi.tag == DW_TAG_base_type | |
18393 | || pdi.tag == DW_TAG_subrange_type)) | |
72bf9492 | 18394 | { |
cd9983dd YQ |
18395 | if (building_psymtab && pdi.name != NULL) |
18396 | add_psymbol_to_list (pdi.name, strlen (pdi.name), 0, | |
79748972 | 18397 | VAR_DOMAIN, LOC_TYPEDEF, -1, |
bb5ed363 | 18398 | &objfile->static_psymbols, |
1762568f | 18399 | 0, cu->language, objfile); |
cd9983dd | 18400 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
18401 | continue; |
18402 | } | |
18403 | ||
d8228535 JK |
18404 | /* The exception for DW_TAG_typedef with has_children above is |
18405 | a workaround of GCC PR debug/47510. In the case of this complaint | |
a737d952 | 18406 | type_name_or_error will error on such types later. |
d8228535 JK |
18407 | |
18408 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
18409 | it could not find the child DIEs referenced later, this is checked | |
18410 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
18411 | ||
cd9983dd | 18412 | if (pdi.tag == DW_TAG_typedef && pdi.has_children) |
b98664d3 | 18413 | complaint (_("DW_TAG_typedef has childen - GCC PR debug/47510 bug " |
9d8780f0 | 18414 | "- DIE at %s [in module %s]"), |
cd9983dd | 18415 | sect_offset_str (pdi.sect_off), objfile_name (objfile)); |
d8228535 | 18416 | |
72bf9492 DJ |
18417 | /* If we're at the second level, and we're an enumerator, and |
18418 | our parent has no specification (meaning possibly lives in a | |
18419 | namespace elsewhere), then we can add the partial symbol now | |
18420 | instead of queueing it. */ | |
cd9983dd | 18421 | if (pdi.tag == DW_TAG_enumerator |
72bf9492 DJ |
18422 | && parent_die != NULL |
18423 | && parent_die->die_parent == NULL | |
18424 | && parent_die->tag == DW_TAG_enumeration_type | |
18425 | && parent_die->has_specification == 0) | |
18426 | { | |
cd9983dd | 18427 | if (pdi.name == NULL) |
b98664d3 | 18428 | complaint (_("malformed enumerator DIE ignored")); |
72bf9492 | 18429 | else if (building_psymtab) |
cd9983dd | 18430 | add_psymbol_to_list (pdi.name, strlen (pdi.name), 0, |
79748972 | 18431 | VAR_DOMAIN, LOC_CONST, -1, |
9c37b5ae | 18432 | cu->language == language_cplus |
bb5ed363 DE |
18433 | ? &objfile->global_psymbols |
18434 | : &objfile->static_psymbols, | |
1762568f | 18435 | 0, cu->language, objfile); |
72bf9492 | 18436 | |
cd9983dd | 18437 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
18438 | continue; |
18439 | } | |
18440 | ||
cd9983dd | 18441 | struct partial_die_info *part_die |
6f06d47b | 18442 | = new (&cu->comp_unit_obstack) partial_die_info (pdi); |
cd9983dd | 18443 | |
72bf9492 DJ |
18444 | /* We'll save this DIE so link it in. */ |
18445 | part_die->die_parent = parent_die; | |
18446 | part_die->die_sibling = NULL; | |
18447 | part_die->die_child = NULL; | |
18448 | ||
18449 | if (last_die && last_die == parent_die) | |
18450 | last_die->die_child = part_die; | |
18451 | else if (last_die) | |
18452 | last_die->die_sibling = part_die; | |
18453 | ||
18454 | last_die = part_die; | |
18455 | ||
18456 | if (first_die == NULL) | |
18457 | first_die = part_die; | |
18458 | ||
18459 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
18460 | find interesting need to be in the hash table, because we | |
18461 | also have the parent/sibling/child chains; only those that we | |
18462 | might refer to by offset later during partial symbol reading. | |
18463 | ||
18464 | For now this means things that might have be the target of a | |
18465 | DW_AT_specification, DW_AT_abstract_origin, or | |
18466 | DW_AT_extension. DW_AT_extension will refer only to | |
18467 | namespaces; DW_AT_abstract_origin refers to functions (and | |
18468 | many things under the function DIE, but we do not recurse | |
18469 | into function DIEs during partial symbol reading) and | |
18470 | possibly variables as well; DW_AT_specification refers to | |
18471 | declarations. Declarations ought to have the DW_AT_declaration | |
18472 | flag. It happens that GCC forgets to put it in sometimes, but | |
18473 | only for functions, not for types. | |
18474 | ||
18475 | Adding more things than necessary to the hash table is harmless | |
18476 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
18477 | wasted time in find_partial_die, when we reread the compilation |
18478 | unit with load_all_dies set. */ | |
72bf9492 | 18479 | |
5afb4e99 | 18480 | if (load_all |
72929c62 | 18481 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 18482 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
18483 | || abbrev->tag == DW_TAG_variable |
18484 | || abbrev->tag == DW_TAG_namespace | |
18485 | || part_die->is_declaration) | |
18486 | { | |
18487 | void **slot; | |
18488 | ||
18489 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
9c541725 PA |
18490 | to_underlying (part_die->sect_off), |
18491 | INSERT); | |
72bf9492 DJ |
18492 | *slot = part_die; |
18493 | } | |
18494 | ||
72bf9492 | 18495 | /* For some DIEs we want to follow their children (if any). For C |
bc30ff58 | 18496 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
18497 | languages we have to, so that we can get at method physnames |
18498 | to infer fully qualified class names, for DW_AT_specification, | |
18499 | and for C++ template arguments. For C++, we also look one level | |
18500 | inside functions to find template arguments (if the name of the | |
18501 | function does not already contain the template arguments). | |
bc30ff58 JB |
18502 | |
18503 | For Ada, we need to scan the children of subprograms and lexical | |
18504 | blocks as well because Ada allows the definition of nested | |
18505 | entities that could be interesting for the debugger, such as | |
18506 | nested subprograms for instance. */ | |
72bf9492 | 18507 | if (last_die->has_children |
5afb4e99 DJ |
18508 | && (load_all |
18509 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 18510 | || last_die->tag == DW_TAG_module |
72bf9492 | 18511 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
18512 | || (cu->language == language_cplus |
18513 | && last_die->tag == DW_TAG_subprogram | |
18514 | && (last_die->name == NULL | |
18515 | || strchr (last_die->name, '<') == NULL)) | |
72bf9492 DJ |
18516 | || (cu->language != language_c |
18517 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 18518 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 18519 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 JB |
18520 | || last_die->tag == DW_TAG_union_type)) |
18521 | || (cu->language == language_ada | |
18522 | && (last_die->tag == DW_TAG_subprogram | |
18523 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
18524 | { |
18525 | nesting_level++; | |
18526 | parent_die = last_die; | |
18527 | continue; | |
18528 | } | |
18529 | ||
18530 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 18531 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
18532 | |
18533 | /* Back to the top, do it again. */ | |
18534 | } | |
18535 | } | |
18536 | ||
6f06d47b YQ |
18537 | partial_die_info::partial_die_info (sect_offset sect_off_, |
18538 | struct abbrev_info *abbrev) | |
18539 | : partial_die_info (sect_off_, abbrev->tag, abbrev->has_children) | |
18540 | { | |
18541 | } | |
18542 | ||
35cc7ed7 YQ |
18543 | /* Read a minimal amount of information into the minimal die structure. |
18544 | INFO_PTR should point just after the initial uleb128 of a DIE. */ | |
c906108c | 18545 | |
48fbe735 YQ |
18546 | const gdb_byte * |
18547 | partial_die_info::read (const struct die_reader_specs *reader, | |
18548 | const struct abbrev_info &abbrev, const gdb_byte *info_ptr) | |
c906108c | 18549 | { |
dee91e82 | 18550 | struct dwarf2_cu *cu = reader->cu; |
518817b3 SM |
18551 | struct dwarf2_per_objfile *dwarf2_per_objfile |
18552 | = cu->per_cu->dwarf2_per_objfile; | |
fa238c03 | 18553 | unsigned int i; |
c5aa993b | 18554 | int has_low_pc_attr = 0; |
c906108c | 18555 | int has_high_pc_attr = 0; |
91da1414 | 18556 | int high_pc_relative = 0; |
c906108c | 18557 | |
fd0a254f | 18558 | for (i = 0; i < abbrev.num_attrs; ++i) |
c906108c | 18559 | { |
48fbe735 YQ |
18560 | struct attribute attr; |
18561 | ||
fd0a254f | 18562 | info_ptr = read_attribute (reader, &attr, &abbrev.attrs[i], info_ptr); |
c906108c SS |
18563 | |
18564 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 18565 | partial symbol table. */ |
c906108c SS |
18566 | switch (attr.name) |
18567 | { | |
18568 | case DW_AT_name: | |
48fbe735 | 18569 | switch (tag) |
71c25dea TT |
18570 | { |
18571 | case DW_TAG_compile_unit: | |
95554aad | 18572 | case DW_TAG_partial_unit: |
348e048f | 18573 | case DW_TAG_type_unit: |
71c25dea TT |
18574 | /* Compilation units have a DW_AT_name that is a filename, not |
18575 | a source language identifier. */ | |
18576 | case DW_TAG_enumeration_type: | |
18577 | case DW_TAG_enumerator: | |
18578 | /* These tags always have simple identifiers already; no need | |
18579 | to canonicalize them. */ | |
48fbe735 | 18580 | name = DW_STRING (&attr); |
71c25dea TT |
18581 | break; |
18582 | default: | |
48fbe735 YQ |
18583 | { |
18584 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
18585 | ||
18586 | name | |
18587 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, | |
18588 | &objfile->per_bfd->storage_obstack); | |
18589 | } | |
71c25dea TT |
18590 | break; |
18591 | } | |
c906108c | 18592 | break; |
31ef98ae | 18593 | case DW_AT_linkage_name: |
c906108c | 18594 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
18595 | /* Note that both forms of linkage name might appear. We |
18596 | assume they will be the same, and we only store the last | |
18597 | one we see. */ | |
94af9270 | 18598 | if (cu->language == language_ada) |
48fbe735 YQ |
18599 | name = DW_STRING (&attr); |
18600 | linkage_name = DW_STRING (&attr); | |
c906108c SS |
18601 | break; |
18602 | case DW_AT_low_pc: | |
18603 | has_low_pc_attr = 1; | |
48fbe735 | 18604 | lowpc = attr_value_as_address (&attr); |
c906108c SS |
18605 | break; |
18606 | case DW_AT_high_pc: | |
18607 | has_high_pc_attr = 1; | |
48fbe735 | 18608 | highpc = attr_value_as_address (&attr); |
31aa7e4e JB |
18609 | if (cu->header.version >= 4 && attr_form_is_constant (&attr)) |
18610 | high_pc_relative = 1; | |
c906108c SS |
18611 | break; |
18612 | case DW_AT_location: | |
0963b4bd | 18613 | /* Support the .debug_loc offsets. */ |
8e19ed76 PS |
18614 | if (attr_form_is_block (&attr)) |
18615 | { | |
48fbe735 | 18616 | d.locdesc = DW_BLOCK (&attr); |
8e19ed76 | 18617 | } |
3690dd37 | 18618 | else if (attr_form_is_section_offset (&attr)) |
8e19ed76 | 18619 | { |
4d3c2250 | 18620 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
18621 | } |
18622 | else | |
18623 | { | |
4d3c2250 KB |
18624 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
18625 | "partial symbol information"); | |
8e19ed76 | 18626 | } |
c906108c | 18627 | break; |
c906108c | 18628 | case DW_AT_external: |
48fbe735 | 18629 | is_external = DW_UNSND (&attr); |
c906108c SS |
18630 | break; |
18631 | case DW_AT_declaration: | |
48fbe735 | 18632 | is_declaration = DW_UNSND (&attr); |
c906108c SS |
18633 | break; |
18634 | case DW_AT_type: | |
48fbe735 | 18635 | has_type = 1; |
c906108c SS |
18636 | break; |
18637 | case DW_AT_abstract_origin: | |
18638 | case DW_AT_specification: | |
72bf9492 | 18639 | case DW_AT_extension: |
48fbe735 YQ |
18640 | has_specification = 1; |
18641 | spec_offset = dwarf2_get_ref_die_offset (&attr); | |
18642 | spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt | |
36586728 | 18643 | || cu->per_cu->is_dwz); |
c906108c SS |
18644 | break; |
18645 | case DW_AT_sibling: | |
18646 | /* Ignore absolute siblings, they might point outside of | |
18647 | the current compile unit. */ | |
18648 | if (attr.form == DW_FORM_ref_addr) | |
b98664d3 | 18649 | complaint (_("ignoring absolute DW_AT_sibling")); |
c906108c | 18650 | else |
b9502d3f | 18651 | { |
48fbe735 | 18652 | const gdb_byte *buffer = reader->buffer; |
9c541725 PA |
18653 | sect_offset off = dwarf2_get_ref_die_offset (&attr); |
18654 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); | |
b9502d3f WN |
18655 | |
18656 | if (sibling_ptr < info_ptr) | |
b98664d3 | 18657 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 KS |
18658 | else if (sibling_ptr > reader->buffer_end) |
18659 | dwarf2_section_buffer_overflow_complaint (reader->die_section); | |
b9502d3f | 18660 | else |
48fbe735 | 18661 | sibling = sibling_ptr; |
b9502d3f | 18662 | } |
c906108c | 18663 | break; |
fa4028e9 | 18664 | case DW_AT_byte_size: |
48fbe735 | 18665 | has_byte_size = 1; |
fa4028e9 | 18666 | break; |
ff908ebf | 18667 | case DW_AT_const_value: |
48fbe735 | 18668 | has_const_value = 1; |
ff908ebf | 18669 | break; |
68511cec CES |
18670 | case DW_AT_calling_convention: |
18671 | /* DWARF doesn't provide a way to identify a program's source-level | |
18672 | entry point. DW_AT_calling_convention attributes are only meant | |
18673 | to describe functions' calling conventions. | |
18674 | ||
18675 | However, because it's a necessary piece of information in | |
0c1b455e TT |
18676 | Fortran, and before DWARF 4 DW_CC_program was the only |
18677 | piece of debugging information whose definition refers to | |
18678 | a 'main program' at all, several compilers marked Fortran | |
18679 | main programs with DW_CC_program --- even when those | |
18680 | functions use the standard calling conventions. | |
18681 | ||
18682 | Although DWARF now specifies a way to provide this | |
18683 | information, we support this practice for backward | |
18684 | compatibility. */ | |
68511cec | 18685 | if (DW_UNSND (&attr) == DW_CC_program |
0c1b455e | 18686 | && cu->language == language_fortran) |
48fbe735 | 18687 | main_subprogram = 1; |
68511cec | 18688 | break; |
481860b3 GB |
18689 | case DW_AT_inline: |
18690 | if (DW_UNSND (&attr) == DW_INL_inlined | |
18691 | || DW_UNSND (&attr) == DW_INL_declared_inlined) | |
48fbe735 | 18692 | may_be_inlined = 1; |
481860b3 | 18693 | break; |
95554aad TT |
18694 | |
18695 | case DW_AT_import: | |
48fbe735 | 18696 | if (tag == DW_TAG_imported_unit) |
36586728 | 18697 | { |
48fbe735 YQ |
18698 | d.sect_off = dwarf2_get_ref_die_offset (&attr); |
18699 | is_dwz = (attr.form == DW_FORM_GNU_ref_alt | |
36586728 TT |
18700 | || cu->per_cu->is_dwz); |
18701 | } | |
95554aad TT |
18702 | break; |
18703 | ||
0c1b455e | 18704 | case DW_AT_main_subprogram: |
48fbe735 | 18705 | main_subprogram = DW_UNSND (&attr); |
0c1b455e TT |
18706 | break; |
18707 | ||
c906108c SS |
18708 | default: |
18709 | break; | |
18710 | } | |
18711 | } | |
18712 | ||
91da1414 | 18713 | if (high_pc_relative) |
48fbe735 | 18714 | highpc += lowpc; |
91da1414 | 18715 | |
9373cf26 JK |
18716 | if (has_low_pc_attr && has_high_pc_attr) |
18717 | { | |
18718 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
18719 | eliminate duplicate copies of functions and vtables and such. | |
18720 | The linker will arbitrarily choose one and discard the others. | |
18721 | The AT_*_pc values for such functions refer to local labels in | |
18722 | these sections. If the section from that file was discarded, the | |
18723 | labels are not in the output, so the relocs get a value of 0. | |
18724 | If this is a discarded function, mark the pc bounds as invalid, | |
18725 | so that GDB will ignore it. */ | |
48fbe735 | 18726 | if (lowpc == 0 && !dwarf2_per_objfile->has_section_at_zero) |
9373cf26 | 18727 | { |
48fbe735 | 18728 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
bb5ed363 | 18729 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 | 18730 | |
b98664d3 | 18731 | complaint (_("DW_AT_low_pc %s is zero " |
9d8780f0 | 18732 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
18733 | paddress (gdbarch, lowpc), |
18734 | sect_offset_str (sect_off), | |
9d8780f0 | 18735 | objfile_name (objfile)); |
9373cf26 JK |
18736 | } |
18737 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
48fbe735 | 18738 | else if (lowpc >= highpc) |
9373cf26 | 18739 | { |
48fbe735 | 18740 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
bb5ed363 | 18741 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 | 18742 | |
b98664d3 | 18743 | complaint (_("DW_AT_low_pc %s is not < DW_AT_high_pc %s " |
9d8780f0 | 18744 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
18745 | paddress (gdbarch, lowpc), |
18746 | paddress (gdbarch, highpc), | |
18747 | sect_offset_str (sect_off), | |
9c541725 | 18748 | objfile_name (objfile)); |
9373cf26 JK |
18749 | } |
18750 | else | |
48fbe735 | 18751 | has_pc_info = 1; |
9373cf26 | 18752 | } |
85cbf3d3 | 18753 | |
c906108c SS |
18754 | return info_ptr; |
18755 | } | |
18756 | ||
72bf9492 DJ |
18757 | /* Find a cached partial DIE at OFFSET in CU. */ |
18758 | ||
d590ff25 YQ |
18759 | struct partial_die_info * |
18760 | dwarf2_cu::find_partial_die (sect_offset sect_off) | |
72bf9492 DJ |
18761 | { |
18762 | struct partial_die_info *lookup_die = NULL; | |
6f06d47b | 18763 | struct partial_die_info part_die (sect_off); |
72bf9492 | 18764 | |
9a3c8263 | 18765 | lookup_die = ((struct partial_die_info *) |
d590ff25 | 18766 | htab_find_with_hash (partial_dies, &part_die, |
9c541725 | 18767 | to_underlying (sect_off))); |
72bf9492 | 18768 | |
72bf9492 DJ |
18769 | return lookup_die; |
18770 | } | |
18771 | ||
348e048f DE |
18772 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
18773 | except in the case of .debug_types DIEs which do not reference | |
18774 | outside their CU (they do however referencing other types via | |
55f1336d | 18775 | DW_FORM_ref_sig8). */ |
72bf9492 DJ |
18776 | |
18777 | static struct partial_die_info * | |
9c541725 | 18778 | find_partial_die (sect_offset sect_off, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 18779 | { |
518817b3 SM |
18780 | struct dwarf2_per_objfile *dwarf2_per_objfile |
18781 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 18782 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
5afb4e99 DJ |
18783 | struct dwarf2_per_cu_data *per_cu = NULL; |
18784 | struct partial_die_info *pd = NULL; | |
72bf9492 | 18785 | |
36586728 | 18786 | if (offset_in_dwz == cu->per_cu->is_dwz |
9c541725 | 18787 | && offset_in_cu_p (&cu->header, sect_off)) |
5afb4e99 | 18788 | { |
d590ff25 | 18789 | pd = cu->find_partial_die (sect_off); |
5afb4e99 DJ |
18790 | if (pd != NULL) |
18791 | return pd; | |
0d99eb77 DE |
18792 | /* We missed recording what we needed. |
18793 | Load all dies and try again. */ | |
18794 | per_cu = cu->per_cu; | |
5afb4e99 | 18795 | } |
0d99eb77 DE |
18796 | else |
18797 | { | |
18798 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 18799 | if (cu->per_cu->is_debug_types) |
0d99eb77 | 18800 | { |
9d8780f0 SM |
18801 | error (_("Dwarf Error: Type Unit at offset %s contains" |
18802 | " external reference to offset %s [in module %s].\n"), | |
18803 | sect_offset_str (cu->header.sect_off), sect_offset_str (sect_off), | |
0d99eb77 DE |
18804 | bfd_get_filename (objfile->obfd)); |
18805 | } | |
9c541725 | 18806 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
ed2dc618 | 18807 | dwarf2_per_objfile); |
72bf9492 | 18808 | |
0d99eb77 DE |
18809 | if (per_cu->cu == NULL || per_cu->cu->partial_dies == NULL) |
18810 | load_partial_comp_unit (per_cu); | |
ae038cb0 | 18811 | |
0d99eb77 | 18812 | per_cu->cu->last_used = 0; |
d590ff25 | 18813 | pd = per_cu->cu->find_partial_die (sect_off); |
0d99eb77 | 18814 | } |
5afb4e99 | 18815 | |
dee91e82 DE |
18816 | /* If we didn't find it, and not all dies have been loaded, |
18817 | load them all and try again. */ | |
18818 | ||
5afb4e99 DJ |
18819 | if (pd == NULL && per_cu->load_all_dies == 0) |
18820 | { | |
5afb4e99 | 18821 | per_cu->load_all_dies = 1; |
fd820528 DE |
18822 | |
18823 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
18824 | THIS_CU->cu may already be in use. So we can't just free it and | |
18825 | replace its DIEs with the ones we read in. Instead, we leave those | |
18826 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
18827 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
18828 | set. */ | |
dee91e82 | 18829 | load_partial_comp_unit (per_cu); |
5afb4e99 | 18830 | |
d590ff25 | 18831 | pd = per_cu->cu->find_partial_die (sect_off); |
5afb4e99 DJ |
18832 | } |
18833 | ||
18834 | if (pd == NULL) | |
18835 | internal_error (__FILE__, __LINE__, | |
9d8780f0 | 18836 | _("could not find partial DIE %s " |
3e43a32a | 18837 | "in cache [from module %s]\n"), |
9d8780f0 | 18838 | sect_offset_str (sect_off), bfd_get_filename (objfile->obfd)); |
5afb4e99 | 18839 | return pd; |
72bf9492 DJ |
18840 | } |
18841 | ||
abc72ce4 DE |
18842 | /* See if we can figure out if the class lives in a namespace. We do |
18843 | this by looking for a member function; its demangled name will | |
18844 | contain namespace info, if there is any. */ | |
18845 | ||
18846 | static void | |
18847 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
18848 | struct dwarf2_cu *cu) | |
18849 | { | |
18850 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
18851 | what template types look like, because the demangler | |
18852 | frequently doesn't give the same name as the debug info. We | |
18853 | could fix this by only using the demangled name to get the | |
18854 | prefix (but see comment in read_structure_type). */ | |
18855 | ||
18856 | struct partial_die_info *real_pdi; | |
18857 | struct partial_die_info *child_pdi; | |
18858 | ||
18859 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
18860 | we should not do this. We'll prepend the parent's fully qualified | |
18861 | name when we create the partial symbol. */ | |
18862 | ||
18863 | real_pdi = struct_pdi; | |
18864 | while (real_pdi->has_specification) | |
36586728 TT |
18865 | real_pdi = find_partial_die (real_pdi->spec_offset, |
18866 | real_pdi->spec_is_dwz, cu); | |
abc72ce4 DE |
18867 | |
18868 | if (real_pdi->die_parent != NULL) | |
18869 | return; | |
18870 | ||
18871 | for (child_pdi = struct_pdi->die_child; | |
18872 | child_pdi != NULL; | |
18873 | child_pdi = child_pdi->die_sibling) | |
18874 | { | |
18875 | if (child_pdi->tag == DW_TAG_subprogram | |
18876 | && child_pdi->linkage_name != NULL) | |
18877 | { | |
18878 | char *actual_class_name | |
18879 | = language_class_name_from_physname (cu->language_defn, | |
18880 | child_pdi->linkage_name); | |
18881 | if (actual_class_name != NULL) | |
18882 | { | |
518817b3 | 18883 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
abc72ce4 | 18884 | struct_pdi->name |
224c3ddb | 18885 | = ((const char *) |
e3b94546 | 18886 | obstack_copy0 (&objfile->per_bfd->storage_obstack, |
224c3ddb SM |
18887 | actual_class_name, |
18888 | strlen (actual_class_name))); | |
abc72ce4 DE |
18889 | xfree (actual_class_name); |
18890 | } | |
18891 | break; | |
18892 | } | |
18893 | } | |
18894 | } | |
18895 | ||
52356b79 YQ |
18896 | void |
18897 | partial_die_info::fixup (struct dwarf2_cu *cu) | |
72bf9492 | 18898 | { |
abc72ce4 DE |
18899 | /* Once we've fixed up a die, there's no point in doing so again. |
18900 | This also avoids a memory leak if we were to call | |
18901 | guess_partial_die_structure_name multiple times. */ | |
52356b79 | 18902 | if (fixup_called) |
abc72ce4 DE |
18903 | return; |
18904 | ||
72bf9492 DJ |
18905 | /* If we found a reference attribute and the DIE has no name, try |
18906 | to find a name in the referred to DIE. */ | |
18907 | ||
52356b79 | 18908 | if (name == NULL && has_specification) |
72bf9492 DJ |
18909 | { |
18910 | struct partial_die_info *spec_die; | |
72bf9492 | 18911 | |
52356b79 | 18912 | spec_die = find_partial_die (spec_offset, spec_is_dwz, cu); |
72bf9492 | 18913 | |
52356b79 | 18914 | spec_die->fixup (cu); |
72bf9492 DJ |
18915 | |
18916 | if (spec_die->name) | |
18917 | { | |
52356b79 | 18918 | name = spec_die->name; |
72bf9492 DJ |
18919 | |
18920 | /* Copy DW_AT_external attribute if it is set. */ | |
18921 | if (spec_die->is_external) | |
52356b79 | 18922 | is_external = spec_die->is_external; |
72bf9492 DJ |
18923 | } |
18924 | } | |
18925 | ||
18926 | /* Set default names for some unnamed DIEs. */ | |
72bf9492 | 18927 | |
52356b79 YQ |
18928 | if (name == NULL && tag == DW_TAG_namespace) |
18929 | name = CP_ANONYMOUS_NAMESPACE_STR; | |
72bf9492 | 18930 | |
abc72ce4 DE |
18931 | /* If there is no parent die to provide a namespace, and there are |
18932 | children, see if we can determine the namespace from their linkage | |
122d1940 | 18933 | name. */ |
abc72ce4 | 18934 | if (cu->language == language_cplus |
518817b3 SM |
18935 | && !VEC_empty (dwarf2_section_info_def, |
18936 | cu->per_cu->dwarf2_per_objfile->types) | |
52356b79 YQ |
18937 | && die_parent == NULL |
18938 | && has_children | |
18939 | && (tag == DW_TAG_class_type | |
18940 | || tag == DW_TAG_structure_type | |
18941 | || tag == DW_TAG_union_type)) | |
18942 | guess_partial_die_structure_name (this, cu); | |
abc72ce4 | 18943 | |
53832f31 TT |
18944 | /* GCC might emit a nameless struct or union that has a linkage |
18945 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
52356b79 YQ |
18946 | if (name == NULL |
18947 | && (tag == DW_TAG_class_type | |
18948 | || tag == DW_TAG_interface_type | |
18949 | || tag == DW_TAG_structure_type | |
18950 | || tag == DW_TAG_union_type) | |
18951 | && linkage_name != NULL) | |
53832f31 TT |
18952 | { |
18953 | char *demangled; | |
18954 | ||
52356b79 | 18955 | demangled = gdb_demangle (linkage_name, DMGL_TYPES); |
53832f31 TT |
18956 | if (demangled) |
18957 | { | |
96408a79 SA |
18958 | const char *base; |
18959 | ||
18960 | /* Strip any leading namespaces/classes, keep only the base name. | |
18961 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
18962 | base = strrchr (demangled, ':'); | |
18963 | if (base && base > demangled && base[-1] == ':') | |
18964 | base++; | |
18965 | else | |
18966 | base = demangled; | |
18967 | ||
518817b3 | 18968 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
52356b79 | 18969 | name |
224c3ddb | 18970 | = ((const char *) |
e3b94546 | 18971 | obstack_copy0 (&objfile->per_bfd->storage_obstack, |
224c3ddb | 18972 | base, strlen (base))); |
53832f31 TT |
18973 | xfree (demangled); |
18974 | } | |
18975 | } | |
18976 | ||
52356b79 | 18977 | fixup_called = 1; |
72bf9492 DJ |
18978 | } |
18979 | ||
a8329558 | 18980 | /* Read an attribute value described by an attribute form. */ |
c906108c | 18981 | |
d521ce57 | 18982 | static const gdb_byte * |
dee91e82 DE |
18983 | read_attribute_value (const struct die_reader_specs *reader, |
18984 | struct attribute *attr, unsigned form, | |
43988095 | 18985 | LONGEST implicit_const, const gdb_byte *info_ptr) |
c906108c | 18986 | { |
dee91e82 | 18987 | struct dwarf2_cu *cu = reader->cu; |
518817b3 SM |
18988 | struct dwarf2_per_objfile *dwarf2_per_objfile |
18989 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 18990 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 18991 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
dee91e82 | 18992 | bfd *abfd = reader->abfd; |
e7c27a73 | 18993 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
18994 | unsigned int bytes_read; |
18995 | struct dwarf_block *blk; | |
18996 | ||
aead7601 | 18997 | attr->form = (enum dwarf_form) form; |
a8329558 | 18998 | switch (form) |
c906108c | 18999 | { |
c906108c | 19000 | case DW_FORM_ref_addr: |
ae411497 | 19001 | if (cu->header.version == 2) |
4568ecf9 | 19002 | DW_UNSND (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
ae411497 | 19003 | else |
4568ecf9 DE |
19004 | DW_UNSND (attr) = read_offset (abfd, info_ptr, |
19005 | &cu->header, &bytes_read); | |
ae411497 TT |
19006 | info_ptr += bytes_read; |
19007 | break; | |
36586728 TT |
19008 | case DW_FORM_GNU_ref_alt: |
19009 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
19010 | info_ptr += bytes_read; | |
19011 | break; | |
ae411497 | 19012 | case DW_FORM_addr: |
e7c27a73 | 19013 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
3e29f34a | 19014 | DW_ADDR (attr) = gdbarch_adjust_dwarf2_addr (gdbarch, DW_ADDR (attr)); |
107d2387 | 19015 | info_ptr += bytes_read; |
c906108c SS |
19016 | break; |
19017 | case DW_FORM_block2: | |
7b5a2f43 | 19018 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19019 | blk->size = read_2_bytes (abfd, info_ptr); |
19020 | info_ptr += 2; | |
19021 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19022 | info_ptr += blk->size; | |
19023 | DW_BLOCK (attr) = blk; | |
19024 | break; | |
19025 | case DW_FORM_block4: | |
7b5a2f43 | 19026 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19027 | blk->size = read_4_bytes (abfd, info_ptr); |
19028 | info_ptr += 4; | |
19029 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19030 | info_ptr += blk->size; | |
19031 | DW_BLOCK (attr) = blk; | |
19032 | break; | |
19033 | case DW_FORM_data2: | |
19034 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
19035 | info_ptr += 2; | |
19036 | break; | |
19037 | case DW_FORM_data4: | |
19038 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
19039 | info_ptr += 4; | |
19040 | break; | |
19041 | case DW_FORM_data8: | |
19042 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
19043 | info_ptr += 8; | |
19044 | break; | |
0224619f JK |
19045 | case DW_FORM_data16: |
19046 | blk = dwarf_alloc_block (cu); | |
19047 | blk->size = 16; | |
19048 | blk->data = read_n_bytes (abfd, info_ptr, 16); | |
19049 | info_ptr += 16; | |
19050 | DW_BLOCK (attr) = blk; | |
19051 | break; | |
2dc7f7b3 TT |
19052 | case DW_FORM_sec_offset: |
19053 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
19054 | info_ptr += bytes_read; | |
19055 | break; | |
c906108c | 19056 | case DW_FORM_string: |
9b1c24c8 | 19057 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 19058 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
19059 | info_ptr += bytes_read; |
19060 | break; | |
4bdf3d34 | 19061 | case DW_FORM_strp: |
36586728 TT |
19062 | if (!cu->per_cu->is_dwz) |
19063 | { | |
ed2dc618 SM |
19064 | DW_STRING (attr) = read_indirect_string (dwarf2_per_objfile, |
19065 | abfd, info_ptr, cu_header, | |
36586728 TT |
19066 | &bytes_read); |
19067 | DW_STRING_IS_CANONICAL (attr) = 0; | |
19068 | info_ptr += bytes_read; | |
19069 | break; | |
19070 | } | |
19071 | /* FALLTHROUGH */ | |
43988095 JK |
19072 | case DW_FORM_line_strp: |
19073 | if (!cu->per_cu->is_dwz) | |
19074 | { | |
ed2dc618 SM |
19075 | DW_STRING (attr) = read_indirect_line_string (dwarf2_per_objfile, |
19076 | abfd, info_ptr, | |
43988095 JK |
19077 | cu_header, &bytes_read); |
19078 | DW_STRING_IS_CANONICAL (attr) = 0; | |
19079 | info_ptr += bytes_read; | |
19080 | break; | |
19081 | } | |
19082 | /* FALLTHROUGH */ | |
36586728 TT |
19083 | case DW_FORM_GNU_strp_alt: |
19084 | { | |
ed2dc618 | 19085 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
36586728 TT |
19086 | LONGEST str_offset = read_offset (abfd, info_ptr, cu_header, |
19087 | &bytes_read); | |
19088 | ||
ed2dc618 SM |
19089 | DW_STRING (attr) = read_indirect_string_from_dwz (objfile, |
19090 | dwz, str_offset); | |
36586728 TT |
19091 | DW_STRING_IS_CANONICAL (attr) = 0; |
19092 | info_ptr += bytes_read; | |
19093 | } | |
4bdf3d34 | 19094 | break; |
2dc7f7b3 | 19095 | case DW_FORM_exprloc: |
c906108c | 19096 | case DW_FORM_block: |
7b5a2f43 | 19097 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19098 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19099 | info_ptr += bytes_read; | |
19100 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19101 | info_ptr += blk->size; | |
19102 | DW_BLOCK (attr) = blk; | |
19103 | break; | |
19104 | case DW_FORM_block1: | |
7b5a2f43 | 19105 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19106 | blk->size = read_1_byte (abfd, info_ptr); |
19107 | info_ptr += 1; | |
19108 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19109 | info_ptr += blk->size; | |
19110 | DW_BLOCK (attr) = blk; | |
19111 | break; | |
19112 | case DW_FORM_data1: | |
19113 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
19114 | info_ptr += 1; | |
19115 | break; | |
19116 | case DW_FORM_flag: | |
19117 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
19118 | info_ptr += 1; | |
19119 | break; | |
2dc7f7b3 TT |
19120 | case DW_FORM_flag_present: |
19121 | DW_UNSND (attr) = 1; | |
19122 | break; | |
c906108c SS |
19123 | case DW_FORM_sdata: |
19124 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
19125 | info_ptr += bytes_read; | |
19126 | break; | |
19127 | case DW_FORM_udata: | |
19128 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
19129 | info_ptr += bytes_read; | |
19130 | break; | |
19131 | case DW_FORM_ref1: | |
9c541725 | 19132 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19133 | + read_1_byte (abfd, info_ptr)); |
c906108c SS |
19134 | info_ptr += 1; |
19135 | break; | |
19136 | case DW_FORM_ref2: | |
9c541725 | 19137 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19138 | + read_2_bytes (abfd, info_ptr)); |
c906108c SS |
19139 | info_ptr += 2; |
19140 | break; | |
19141 | case DW_FORM_ref4: | |
9c541725 | 19142 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19143 | + read_4_bytes (abfd, info_ptr)); |
c906108c SS |
19144 | info_ptr += 4; |
19145 | break; | |
613e1657 | 19146 | case DW_FORM_ref8: |
9c541725 | 19147 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19148 | + read_8_bytes (abfd, info_ptr)); |
613e1657 KB |
19149 | info_ptr += 8; |
19150 | break; | |
55f1336d | 19151 | case DW_FORM_ref_sig8: |
ac9ec31b | 19152 | DW_SIGNATURE (attr) = read_8_bytes (abfd, info_ptr); |
348e048f DE |
19153 | info_ptr += 8; |
19154 | break; | |
c906108c | 19155 | case DW_FORM_ref_udata: |
9c541725 | 19156 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19157 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); |
c906108c SS |
19158 | info_ptr += bytes_read; |
19159 | break; | |
c906108c | 19160 | case DW_FORM_indirect: |
a8329558 KW |
19161 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19162 | info_ptr += bytes_read; | |
43988095 JK |
19163 | if (form == DW_FORM_implicit_const) |
19164 | { | |
19165 | implicit_const = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
19166 | info_ptr += bytes_read; | |
19167 | } | |
19168 | info_ptr = read_attribute_value (reader, attr, form, implicit_const, | |
19169 | info_ptr); | |
19170 | break; | |
19171 | case DW_FORM_implicit_const: | |
19172 | DW_SND (attr) = implicit_const; | |
a8329558 | 19173 | break; |
3019eac3 DE |
19174 | case DW_FORM_GNU_addr_index: |
19175 | if (reader->dwo_file == NULL) | |
19176 | { | |
19177 | /* For now flag a hard error. | |
19178 | Later we can turn this into a complaint. */ | |
19179 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
19180 | dwarf_form_name (form), | |
19181 | bfd_get_filename (abfd)); | |
19182 | } | |
19183 | DW_ADDR (attr) = read_addr_index_from_leb128 (cu, info_ptr, &bytes_read); | |
19184 | info_ptr += bytes_read; | |
19185 | break; | |
19186 | case DW_FORM_GNU_str_index: | |
19187 | if (reader->dwo_file == NULL) | |
19188 | { | |
19189 | /* For now flag a hard error. | |
19190 | Later we can turn this into a complaint if warranted. */ | |
19191 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
19192 | dwarf_form_name (form), | |
19193 | bfd_get_filename (abfd)); | |
19194 | } | |
19195 | { | |
19196 | ULONGEST str_index = | |
19197 | read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
19198 | ||
342587c4 | 19199 | DW_STRING (attr) = read_str_index (reader, str_index); |
3019eac3 DE |
19200 | DW_STRING_IS_CANONICAL (attr) = 0; |
19201 | info_ptr += bytes_read; | |
19202 | } | |
19203 | break; | |
c906108c | 19204 | default: |
8a3fe4f8 | 19205 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
19206 | dwarf_form_name (form), |
19207 | bfd_get_filename (abfd)); | |
c906108c | 19208 | } |
28e94949 | 19209 | |
36586728 | 19210 | /* Super hack. */ |
7771576e | 19211 | if (cu->per_cu->is_dwz && attr_form_is_ref (attr)) |
36586728 TT |
19212 | attr->form = DW_FORM_GNU_ref_alt; |
19213 | ||
28e94949 JB |
19214 | /* We have seen instances where the compiler tried to emit a byte |
19215 | size attribute of -1 which ended up being encoded as an unsigned | |
19216 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
19217 | an object of this size seems pretty unlikely so we can relatively | |
19218 | safely treat these cases as if the size attribute was invalid and | |
19219 | treat them as zero by default. */ | |
19220 | if (attr->name == DW_AT_byte_size | |
19221 | && form == DW_FORM_data4 | |
19222 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
19223 | { |
19224 | complaint | |
b98664d3 | 19225 | (_("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
43bbcdc2 | 19226 | hex_string (DW_UNSND (attr))); |
01c66ae6 JB |
19227 | DW_UNSND (attr) = 0; |
19228 | } | |
28e94949 | 19229 | |
c906108c SS |
19230 | return info_ptr; |
19231 | } | |
19232 | ||
a8329558 KW |
19233 | /* Read an attribute described by an abbreviated attribute. */ |
19234 | ||
d521ce57 | 19235 | static const gdb_byte * |
dee91e82 DE |
19236 | read_attribute (const struct die_reader_specs *reader, |
19237 | struct attribute *attr, struct attr_abbrev *abbrev, | |
d521ce57 | 19238 | const gdb_byte *info_ptr) |
a8329558 KW |
19239 | { |
19240 | attr->name = abbrev->name; | |
43988095 JK |
19241 | return read_attribute_value (reader, attr, abbrev->form, |
19242 | abbrev->implicit_const, info_ptr); | |
a8329558 KW |
19243 | } |
19244 | ||
0963b4bd | 19245 | /* Read dwarf information from a buffer. */ |
c906108c SS |
19246 | |
19247 | static unsigned int | |
a1855c1d | 19248 | read_1_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 19249 | { |
fe1b8b76 | 19250 | return bfd_get_8 (abfd, buf); |
c906108c SS |
19251 | } |
19252 | ||
19253 | static int | |
a1855c1d | 19254 | read_1_signed_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 19255 | { |
fe1b8b76 | 19256 | return bfd_get_signed_8 (abfd, buf); |
c906108c SS |
19257 | } |
19258 | ||
19259 | static unsigned int | |
a1855c1d | 19260 | read_2_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 19261 | { |
fe1b8b76 | 19262 | return bfd_get_16 (abfd, buf); |
c906108c SS |
19263 | } |
19264 | ||
21ae7a4d | 19265 | static int |
a1855c1d | 19266 | read_2_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
19267 | { |
19268 | return bfd_get_signed_16 (abfd, buf); | |
19269 | } | |
19270 | ||
c906108c | 19271 | static unsigned int |
a1855c1d | 19272 | read_4_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 19273 | { |
fe1b8b76 | 19274 | return bfd_get_32 (abfd, buf); |
c906108c SS |
19275 | } |
19276 | ||
21ae7a4d | 19277 | static int |
a1855c1d | 19278 | read_4_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
19279 | { |
19280 | return bfd_get_signed_32 (abfd, buf); | |
19281 | } | |
19282 | ||
93311388 | 19283 | static ULONGEST |
a1855c1d | 19284 | read_8_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 19285 | { |
fe1b8b76 | 19286 | return bfd_get_64 (abfd, buf); |
c906108c SS |
19287 | } |
19288 | ||
19289 | static CORE_ADDR | |
d521ce57 | 19290 | read_address (bfd *abfd, const gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 19291 | unsigned int *bytes_read) |
c906108c | 19292 | { |
e7c27a73 | 19293 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
19294 | CORE_ADDR retval = 0; |
19295 | ||
107d2387 | 19296 | if (cu_header->signed_addr_p) |
c906108c | 19297 | { |
107d2387 AC |
19298 | switch (cu_header->addr_size) |
19299 | { | |
19300 | case 2: | |
fe1b8b76 | 19301 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
19302 | break; |
19303 | case 4: | |
fe1b8b76 | 19304 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
19305 | break; |
19306 | case 8: | |
fe1b8b76 | 19307 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
19308 | break; |
19309 | default: | |
8e65ff28 | 19310 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 19311 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 19312 | bfd_get_filename (abfd)); |
107d2387 AC |
19313 | } |
19314 | } | |
19315 | else | |
19316 | { | |
19317 | switch (cu_header->addr_size) | |
19318 | { | |
19319 | case 2: | |
fe1b8b76 | 19320 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
19321 | break; |
19322 | case 4: | |
fe1b8b76 | 19323 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
19324 | break; |
19325 | case 8: | |
fe1b8b76 | 19326 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
19327 | break; |
19328 | default: | |
8e65ff28 | 19329 | internal_error (__FILE__, __LINE__, |
a73c6dcd MS |
19330 | _("read_address: bad switch, " |
19331 | "unsigned [in module %s]"), | |
659b0389 | 19332 | bfd_get_filename (abfd)); |
107d2387 | 19333 | } |
c906108c | 19334 | } |
64367e0a | 19335 | |
107d2387 AC |
19336 | *bytes_read = cu_header->addr_size; |
19337 | return retval; | |
c906108c SS |
19338 | } |
19339 | ||
f7ef9339 | 19340 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
19341 | specification allows the initial length to take up either 4 bytes |
19342 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
19343 | bytes describe the length and all offsets will be 8 bytes in length | |
19344 | instead of 4. | |
19345 | ||
f7ef9339 KB |
19346 | An older, non-standard 64-bit format is also handled by this |
19347 | function. The older format in question stores the initial length | |
19348 | as an 8-byte quantity without an escape value. Lengths greater | |
19349 | than 2^32 aren't very common which means that the initial 4 bytes | |
19350 | is almost always zero. Since a length value of zero doesn't make | |
19351 | sense for the 32-bit format, this initial zero can be considered to | |
19352 | be an escape value which indicates the presence of the older 64-bit | |
19353 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
19354 | greater than 4GB. If it becomes necessary to handle lengths |
19355 | somewhat larger than 4GB, we could allow other small values (such | |
19356 | as the non-sensical values of 1, 2, and 3) to also be used as | |
19357 | escape values indicating the presence of the old format. | |
f7ef9339 | 19358 | |
917c78fc MK |
19359 | The value returned via bytes_read should be used to increment the |
19360 | relevant pointer after calling read_initial_length(). | |
c764a876 | 19361 | |
613e1657 KB |
19362 | [ Note: read_initial_length() and read_offset() are based on the |
19363 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 19364 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
19365 | from: |
19366 | ||
f7ef9339 | 19367 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
6e70227d | 19368 | |
613e1657 KB |
19369 | This document is only a draft and is subject to change. (So beware.) |
19370 | ||
f7ef9339 | 19371 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
19372 | determined empirically by examining 64-bit ELF files produced by |
19373 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
19374 | |
19375 | - Kevin, July 16, 2002 | |
613e1657 KB |
19376 | ] */ |
19377 | ||
19378 | static LONGEST | |
d521ce57 | 19379 | read_initial_length (bfd *abfd, const gdb_byte *buf, unsigned int *bytes_read) |
613e1657 | 19380 | { |
fe1b8b76 | 19381 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 19382 | |
dd373385 | 19383 | if (length == 0xffffffff) |
613e1657 | 19384 | { |
fe1b8b76 | 19385 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 19386 | *bytes_read = 12; |
613e1657 | 19387 | } |
dd373385 | 19388 | else if (length == 0) |
f7ef9339 | 19389 | { |
dd373385 | 19390 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 19391 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 19392 | *bytes_read = 8; |
f7ef9339 | 19393 | } |
613e1657 KB |
19394 | else |
19395 | { | |
19396 | *bytes_read = 4; | |
613e1657 KB |
19397 | } |
19398 | ||
c764a876 DE |
19399 | return length; |
19400 | } | |
dd373385 | 19401 | |
c764a876 DE |
19402 | /* Cover function for read_initial_length. |
19403 | Returns the length of the object at BUF, and stores the size of the | |
19404 | initial length in *BYTES_READ and stores the size that offsets will be in | |
19405 | *OFFSET_SIZE. | |
19406 | If the initial length size is not equivalent to that specified in | |
19407 | CU_HEADER then issue a complaint. | |
19408 | This is useful when reading non-comp-unit headers. */ | |
dd373385 | 19409 | |
c764a876 | 19410 | static LONGEST |
d521ce57 | 19411 | read_checked_initial_length_and_offset (bfd *abfd, const gdb_byte *buf, |
c764a876 DE |
19412 | const struct comp_unit_head *cu_header, |
19413 | unsigned int *bytes_read, | |
19414 | unsigned int *offset_size) | |
19415 | { | |
19416 | LONGEST length = read_initial_length (abfd, buf, bytes_read); | |
19417 | ||
19418 | gdb_assert (cu_header->initial_length_size == 4 | |
19419 | || cu_header->initial_length_size == 8 | |
19420 | || cu_header->initial_length_size == 12); | |
19421 | ||
19422 | if (cu_header->initial_length_size != *bytes_read) | |
b98664d3 | 19423 | complaint (_("intermixed 32-bit and 64-bit DWARF sections")); |
dd373385 | 19424 | |
c764a876 | 19425 | *offset_size = (*bytes_read == 4) ? 4 : 8; |
dd373385 | 19426 | return length; |
613e1657 KB |
19427 | } |
19428 | ||
19429 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 19430 | given by cu_header->offset_size. */ |
613e1657 KB |
19431 | |
19432 | static LONGEST | |
d521ce57 TT |
19433 | read_offset (bfd *abfd, const gdb_byte *buf, |
19434 | const struct comp_unit_head *cu_header, | |
891d2f0b | 19435 | unsigned int *bytes_read) |
c764a876 DE |
19436 | { |
19437 | LONGEST offset = read_offset_1 (abfd, buf, cu_header->offset_size); | |
9a619af0 | 19438 | |
c764a876 DE |
19439 | *bytes_read = cu_header->offset_size; |
19440 | return offset; | |
19441 | } | |
19442 | ||
19443 | /* Read an offset from the data stream. */ | |
19444 | ||
19445 | static LONGEST | |
d521ce57 | 19446 | read_offset_1 (bfd *abfd, const gdb_byte *buf, unsigned int offset_size) |
613e1657 KB |
19447 | { |
19448 | LONGEST retval = 0; | |
19449 | ||
c764a876 | 19450 | switch (offset_size) |
613e1657 KB |
19451 | { |
19452 | case 4: | |
fe1b8b76 | 19453 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
19454 | break; |
19455 | case 8: | |
fe1b8b76 | 19456 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
19457 | break; |
19458 | default: | |
8e65ff28 | 19459 | internal_error (__FILE__, __LINE__, |
c764a876 | 19460 | _("read_offset_1: bad switch [in module %s]"), |
659b0389 | 19461 | bfd_get_filename (abfd)); |
613e1657 KB |
19462 | } |
19463 | ||
917c78fc | 19464 | return retval; |
613e1657 KB |
19465 | } |
19466 | ||
d521ce57 TT |
19467 | static const gdb_byte * |
19468 | read_n_bytes (bfd *abfd, const gdb_byte *buf, unsigned int size) | |
c906108c SS |
19469 | { |
19470 | /* If the size of a host char is 8 bits, we can return a pointer | |
19471 | to the buffer, otherwise we have to copy the data to a buffer | |
19472 | allocated on the temporary obstack. */ | |
4bdf3d34 | 19473 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 19474 | return buf; |
c906108c SS |
19475 | } |
19476 | ||
d521ce57 TT |
19477 | static const char * |
19478 | read_direct_string (bfd *abfd, const gdb_byte *buf, | |
19479 | unsigned int *bytes_read_ptr) | |
c906108c SS |
19480 | { |
19481 | /* If the size of a host char is 8 bits, we can return a pointer | |
19482 | to the string, otherwise we have to copy the string to a buffer | |
19483 | allocated on the temporary obstack. */ | |
4bdf3d34 | 19484 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
19485 | if (*buf == '\0') |
19486 | { | |
19487 | *bytes_read_ptr = 1; | |
19488 | return NULL; | |
19489 | } | |
d521ce57 TT |
19490 | *bytes_read_ptr = strlen ((const char *) buf) + 1; |
19491 | return (const char *) buf; | |
4bdf3d34 JJ |
19492 | } |
19493 | ||
43988095 JK |
19494 | /* Return pointer to string at section SECT offset STR_OFFSET with error |
19495 | reporting strings FORM_NAME and SECT_NAME. */ | |
19496 | ||
d521ce57 | 19497 | static const char * |
ed2dc618 SM |
19498 | read_indirect_string_at_offset_from (struct objfile *objfile, |
19499 | bfd *abfd, LONGEST str_offset, | |
43988095 JK |
19500 | struct dwarf2_section_info *sect, |
19501 | const char *form_name, | |
19502 | const char *sect_name) | |
19503 | { | |
ed2dc618 | 19504 | dwarf2_read_section (objfile, sect); |
43988095 JK |
19505 | if (sect->buffer == NULL) |
19506 | error (_("%s used without %s section [in module %s]"), | |
19507 | form_name, sect_name, bfd_get_filename (abfd)); | |
19508 | if (str_offset >= sect->size) | |
19509 | error (_("%s pointing outside of %s section [in module %s]"), | |
19510 | form_name, sect_name, bfd_get_filename (abfd)); | |
4bdf3d34 | 19511 | gdb_assert (HOST_CHAR_BIT == 8); |
43988095 | 19512 | if (sect->buffer[str_offset] == '\0') |
4bdf3d34 | 19513 | return NULL; |
43988095 JK |
19514 | return (const char *) (sect->buffer + str_offset); |
19515 | } | |
19516 | ||
19517 | /* Return pointer to string at .debug_str offset STR_OFFSET. */ | |
19518 | ||
19519 | static const char * | |
ed2dc618 SM |
19520 | read_indirect_string_at_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19521 | bfd *abfd, LONGEST str_offset) | |
43988095 | 19522 | { |
ed2dc618 SM |
19523 | return read_indirect_string_at_offset_from (dwarf2_per_objfile->objfile, |
19524 | abfd, str_offset, | |
43988095 JK |
19525 | &dwarf2_per_objfile->str, |
19526 | "DW_FORM_strp", ".debug_str"); | |
19527 | } | |
19528 | ||
19529 | /* Return pointer to string at .debug_line_str offset STR_OFFSET. */ | |
19530 | ||
19531 | static const char * | |
ed2dc618 SM |
19532 | read_indirect_line_string_at_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19533 | bfd *abfd, LONGEST str_offset) | |
43988095 | 19534 | { |
ed2dc618 SM |
19535 | return read_indirect_string_at_offset_from (dwarf2_per_objfile->objfile, |
19536 | abfd, str_offset, | |
43988095 JK |
19537 | &dwarf2_per_objfile->line_str, |
19538 | "DW_FORM_line_strp", | |
19539 | ".debug_line_str"); | |
c906108c SS |
19540 | } |
19541 | ||
36586728 TT |
19542 | /* Read a string at offset STR_OFFSET in the .debug_str section from |
19543 | the .dwz file DWZ. Throw an error if the offset is too large. If | |
19544 | the string consists of a single NUL byte, return NULL; otherwise | |
19545 | return a pointer to the string. */ | |
19546 | ||
d521ce57 | 19547 | static const char * |
ed2dc618 SM |
19548 | read_indirect_string_from_dwz (struct objfile *objfile, struct dwz_file *dwz, |
19549 | LONGEST str_offset) | |
36586728 | 19550 | { |
ed2dc618 | 19551 | dwarf2_read_section (objfile, &dwz->str); |
36586728 TT |
19552 | |
19553 | if (dwz->str.buffer == NULL) | |
19554 | error (_("DW_FORM_GNU_strp_alt used without .debug_str " | |
19555 | "section [in module %s]"), | |
19556 | bfd_get_filename (dwz->dwz_bfd)); | |
19557 | if (str_offset >= dwz->str.size) | |
19558 | error (_("DW_FORM_GNU_strp_alt pointing outside of " | |
19559 | ".debug_str section [in module %s]"), | |
19560 | bfd_get_filename (dwz->dwz_bfd)); | |
19561 | gdb_assert (HOST_CHAR_BIT == 8); | |
19562 | if (dwz->str.buffer[str_offset] == '\0') | |
19563 | return NULL; | |
d521ce57 | 19564 | return (const char *) (dwz->str.buffer + str_offset); |
36586728 TT |
19565 | } |
19566 | ||
43988095 JK |
19567 | /* Return pointer to string at .debug_str offset as read from BUF. |
19568 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
19569 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
19570 | ||
d521ce57 | 19571 | static const char * |
ed2dc618 SM |
19572 | read_indirect_string (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *abfd, |
19573 | const gdb_byte *buf, | |
cf2c3c16 TT |
19574 | const struct comp_unit_head *cu_header, |
19575 | unsigned int *bytes_read_ptr) | |
19576 | { | |
19577 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
19578 | ||
ed2dc618 | 19579 | return read_indirect_string_at_offset (dwarf2_per_objfile, abfd, str_offset); |
cf2c3c16 TT |
19580 | } |
19581 | ||
43988095 JK |
19582 | /* Return pointer to string at .debug_line_str offset as read from BUF. |
19583 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
19584 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
19585 | ||
19586 | static const char * | |
ed2dc618 SM |
19587 | read_indirect_line_string (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19588 | bfd *abfd, const gdb_byte *buf, | |
43988095 JK |
19589 | const struct comp_unit_head *cu_header, |
19590 | unsigned int *bytes_read_ptr) | |
19591 | { | |
19592 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
19593 | ||
ed2dc618 SM |
19594 | return read_indirect_line_string_at_offset (dwarf2_per_objfile, abfd, |
19595 | str_offset); | |
43988095 JK |
19596 | } |
19597 | ||
19598 | ULONGEST | |
d521ce57 | 19599 | read_unsigned_leb128 (bfd *abfd, const gdb_byte *buf, |
43988095 | 19600 | unsigned int *bytes_read_ptr) |
c906108c | 19601 | { |
12df843f | 19602 | ULONGEST result; |
ce5d95e1 | 19603 | unsigned int num_read; |
870f88f7 | 19604 | int shift; |
c906108c SS |
19605 | unsigned char byte; |
19606 | ||
19607 | result = 0; | |
19608 | shift = 0; | |
19609 | num_read = 0; | |
c906108c SS |
19610 | while (1) |
19611 | { | |
fe1b8b76 | 19612 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
19613 | buf++; |
19614 | num_read++; | |
12df843f | 19615 | result |= ((ULONGEST) (byte & 127) << shift); |
c906108c SS |
19616 | if ((byte & 128) == 0) |
19617 | { | |
19618 | break; | |
19619 | } | |
19620 | shift += 7; | |
19621 | } | |
19622 | *bytes_read_ptr = num_read; | |
19623 | return result; | |
19624 | } | |
19625 | ||
12df843f | 19626 | static LONGEST |
d521ce57 TT |
19627 | read_signed_leb128 (bfd *abfd, const gdb_byte *buf, |
19628 | unsigned int *bytes_read_ptr) | |
c906108c | 19629 | { |
12df843f | 19630 | LONGEST result; |
870f88f7 | 19631 | int shift, num_read; |
c906108c SS |
19632 | unsigned char byte; |
19633 | ||
19634 | result = 0; | |
19635 | shift = 0; | |
c906108c | 19636 | num_read = 0; |
c906108c SS |
19637 | while (1) |
19638 | { | |
fe1b8b76 | 19639 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
19640 | buf++; |
19641 | num_read++; | |
12df843f | 19642 | result |= ((LONGEST) (byte & 127) << shift); |
c906108c SS |
19643 | shift += 7; |
19644 | if ((byte & 128) == 0) | |
19645 | { | |
19646 | break; | |
19647 | } | |
19648 | } | |
77e0b926 | 19649 | if ((shift < 8 * sizeof (result)) && (byte & 0x40)) |
12df843f | 19650 | result |= -(((LONGEST) 1) << shift); |
c906108c SS |
19651 | *bytes_read_ptr = num_read; |
19652 | return result; | |
19653 | } | |
19654 | ||
3019eac3 DE |
19655 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
19656 | ADDR_BASE is the DW_AT_GNU_addr_base attribute or zero. | |
19657 | ADDR_SIZE is the size of addresses from the CU header. */ | |
19658 | ||
19659 | static CORE_ADDR | |
ed2dc618 SM |
19660 | read_addr_index_1 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19661 | unsigned int addr_index, ULONGEST addr_base, int addr_size) | |
3019eac3 DE |
19662 | { |
19663 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
19664 | bfd *abfd = objfile->obfd; | |
19665 | const gdb_byte *info_ptr; | |
19666 | ||
19667 | dwarf2_read_section (objfile, &dwarf2_per_objfile->addr); | |
19668 | if (dwarf2_per_objfile->addr.buffer == NULL) | |
19669 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), | |
4262abfb | 19670 | objfile_name (objfile)); |
3019eac3 DE |
19671 | if (addr_base + addr_index * addr_size >= dwarf2_per_objfile->addr.size) |
19672 | error (_("DW_FORM_addr_index pointing outside of " | |
19673 | ".debug_addr section [in module %s]"), | |
4262abfb | 19674 | objfile_name (objfile)); |
3019eac3 DE |
19675 | info_ptr = (dwarf2_per_objfile->addr.buffer |
19676 | + addr_base + addr_index * addr_size); | |
19677 | if (addr_size == 4) | |
19678 | return bfd_get_32 (abfd, info_ptr); | |
19679 | else | |
19680 | return bfd_get_64 (abfd, info_ptr); | |
19681 | } | |
19682 | ||
19683 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
19684 | ||
19685 | static CORE_ADDR | |
19686 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
19687 | { | |
518817b3 SM |
19688 | return read_addr_index_1 (cu->per_cu->dwarf2_per_objfile, addr_index, |
19689 | cu->addr_base, cu->header.addr_size); | |
3019eac3 DE |
19690 | } |
19691 | ||
19692 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
19693 | ||
19694 | static CORE_ADDR | |
d521ce57 | 19695 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, const gdb_byte *info_ptr, |
3019eac3 DE |
19696 | unsigned int *bytes_read) |
19697 | { | |
518817b3 | 19698 | bfd *abfd = cu->per_cu->dwarf2_per_objfile->objfile->obfd; |
3019eac3 DE |
19699 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); |
19700 | ||
19701 | return read_addr_index (cu, addr_index); | |
19702 | } | |
19703 | ||
19704 | /* Data structure to pass results from dwarf2_read_addr_index_reader | |
19705 | back to dwarf2_read_addr_index. */ | |
19706 | ||
19707 | struct dwarf2_read_addr_index_data | |
19708 | { | |
19709 | ULONGEST addr_base; | |
19710 | int addr_size; | |
19711 | }; | |
19712 | ||
19713 | /* die_reader_func for dwarf2_read_addr_index. */ | |
19714 | ||
19715 | static void | |
19716 | dwarf2_read_addr_index_reader (const struct die_reader_specs *reader, | |
d521ce57 | 19717 | const gdb_byte *info_ptr, |
3019eac3 DE |
19718 | struct die_info *comp_unit_die, |
19719 | int has_children, | |
19720 | void *data) | |
19721 | { | |
19722 | struct dwarf2_cu *cu = reader->cu; | |
19723 | struct dwarf2_read_addr_index_data *aidata = | |
19724 | (struct dwarf2_read_addr_index_data *) data; | |
19725 | ||
19726 | aidata->addr_base = cu->addr_base; | |
19727 | aidata->addr_size = cu->header.addr_size; | |
19728 | } | |
19729 | ||
19730 | /* Given an index in .debug_addr, fetch the value. | |
19731 | NOTE: This can be called during dwarf expression evaluation, | |
19732 | long after the debug information has been read, and thus per_cu->cu | |
19733 | may no longer exist. */ | |
19734 | ||
19735 | CORE_ADDR | |
19736 | dwarf2_read_addr_index (struct dwarf2_per_cu_data *per_cu, | |
19737 | unsigned int addr_index) | |
19738 | { | |
ed2dc618 | 19739 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
3019eac3 DE |
19740 | struct dwarf2_cu *cu = per_cu->cu; |
19741 | ULONGEST addr_base; | |
19742 | int addr_size; | |
19743 | ||
3019eac3 DE |
19744 | /* We need addr_base and addr_size. |
19745 | If we don't have PER_CU->cu, we have to get it. | |
19746 | Nasty, but the alternative is storing the needed info in PER_CU, | |
19747 | which at this point doesn't seem justified: it's not clear how frequently | |
19748 | it would get used and it would increase the size of every PER_CU. | |
19749 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
19750 | so we're not in uncharted territory here. | |
19751 | Alas we need to be a bit more complicated as addr_base is contained | |
19752 | in the DIE. | |
19753 | ||
19754 | We don't need to read the entire CU(/TU). | |
19755 | We just need the header and top level die. | |
a1b64ce1 | 19756 | |
3019eac3 | 19757 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 19758 | For now we skip this optimization. */ |
3019eac3 DE |
19759 | |
19760 | if (cu != NULL) | |
19761 | { | |
19762 | addr_base = cu->addr_base; | |
19763 | addr_size = cu->header.addr_size; | |
19764 | } | |
19765 | else | |
19766 | { | |
19767 | struct dwarf2_read_addr_index_data aidata; | |
19768 | ||
a1b64ce1 DE |
19769 | /* Note: We can't use init_cutu_and_read_dies_simple here, |
19770 | we need addr_base. */ | |
58f0c718 | 19771 | init_cutu_and_read_dies (per_cu, NULL, 0, 0, false, |
a1b64ce1 | 19772 | dwarf2_read_addr_index_reader, &aidata); |
3019eac3 DE |
19773 | addr_base = aidata.addr_base; |
19774 | addr_size = aidata.addr_size; | |
19775 | } | |
19776 | ||
ed2dc618 SM |
19777 | return read_addr_index_1 (dwarf2_per_objfile, addr_index, addr_base, |
19778 | addr_size); | |
3019eac3 DE |
19779 | } |
19780 | ||
57d63ce2 DE |
19781 | /* Given a DW_FORM_GNU_str_index, fetch the string. |
19782 | This is only used by the Fission support. */ | |
3019eac3 | 19783 | |
d521ce57 | 19784 | static const char * |
342587c4 | 19785 | read_str_index (const struct die_reader_specs *reader, ULONGEST str_index) |
3019eac3 | 19786 | { |
ed2dc618 | 19787 | struct dwarf2_cu *cu = reader->cu; |
518817b3 SM |
19788 | struct dwarf2_per_objfile *dwarf2_per_objfile |
19789 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 | 19790 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
c5164cbc | 19791 | const char *objf_name = objfile_name (objfile); |
3019eac3 | 19792 | bfd *abfd = objfile->obfd; |
73869dc2 DE |
19793 | struct dwarf2_section_info *str_section = &reader->dwo_file->sections.str; |
19794 | struct dwarf2_section_info *str_offsets_section = | |
19795 | &reader->dwo_file->sections.str_offsets; | |
d521ce57 | 19796 | const gdb_byte *info_ptr; |
3019eac3 | 19797 | ULONGEST str_offset; |
57d63ce2 | 19798 | static const char form_name[] = "DW_FORM_GNU_str_index"; |
3019eac3 | 19799 | |
73869dc2 DE |
19800 | dwarf2_read_section (objfile, str_section); |
19801 | dwarf2_read_section (objfile, str_offsets_section); | |
19802 | if (str_section->buffer == NULL) | |
57d63ce2 | 19803 | error (_("%s used without .debug_str.dwo section" |
9d8780f0 SM |
19804 | " in CU at offset %s [in module %s]"), |
19805 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 19806 | if (str_offsets_section->buffer == NULL) |
57d63ce2 | 19807 | error (_("%s used without .debug_str_offsets.dwo section" |
9d8780f0 SM |
19808 | " in CU at offset %s [in module %s]"), |
19809 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 19810 | if (str_index * cu->header.offset_size >= str_offsets_section->size) |
57d63ce2 | 19811 | error (_("%s pointing outside of .debug_str_offsets.dwo" |
9d8780f0 SM |
19812 | " section in CU at offset %s [in module %s]"), |
19813 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 19814 | info_ptr = (str_offsets_section->buffer |
3019eac3 DE |
19815 | + str_index * cu->header.offset_size); |
19816 | if (cu->header.offset_size == 4) | |
19817 | str_offset = bfd_get_32 (abfd, info_ptr); | |
19818 | else | |
19819 | str_offset = bfd_get_64 (abfd, info_ptr); | |
73869dc2 | 19820 | if (str_offset >= str_section->size) |
57d63ce2 | 19821 | error (_("Offset from %s pointing outside of" |
9d8780f0 SM |
19822 | " .debug_str.dwo section in CU at offset %s [in module %s]"), |
19823 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 19824 | return (const char *) (str_section->buffer + str_offset); |
3019eac3 DE |
19825 | } |
19826 | ||
3019eac3 DE |
19827 | /* Return the length of an LEB128 number in BUF. */ |
19828 | ||
19829 | static int | |
19830 | leb128_size (const gdb_byte *buf) | |
19831 | { | |
19832 | const gdb_byte *begin = buf; | |
19833 | gdb_byte byte; | |
19834 | ||
19835 | while (1) | |
19836 | { | |
19837 | byte = *buf++; | |
19838 | if ((byte & 128) == 0) | |
19839 | return buf - begin; | |
19840 | } | |
19841 | } | |
19842 | ||
c906108c | 19843 | static void |
e142c38c | 19844 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
19845 | { |
19846 | switch (lang) | |
19847 | { | |
19848 | case DW_LANG_C89: | |
76bee0cc | 19849 | case DW_LANG_C99: |
0cfd832f | 19850 | case DW_LANG_C11: |
c906108c | 19851 | case DW_LANG_C: |
d1be3247 | 19852 | case DW_LANG_UPC: |
e142c38c | 19853 | cu->language = language_c; |
c906108c | 19854 | break; |
9c37b5ae | 19855 | case DW_LANG_Java: |
c906108c | 19856 | case DW_LANG_C_plus_plus: |
0cfd832f MW |
19857 | case DW_LANG_C_plus_plus_11: |
19858 | case DW_LANG_C_plus_plus_14: | |
e142c38c | 19859 | cu->language = language_cplus; |
c906108c | 19860 | break; |
6aecb9c2 JB |
19861 | case DW_LANG_D: |
19862 | cu->language = language_d; | |
19863 | break; | |
c906108c SS |
19864 | case DW_LANG_Fortran77: |
19865 | case DW_LANG_Fortran90: | |
b21b22e0 | 19866 | case DW_LANG_Fortran95: |
f7de9aab MW |
19867 | case DW_LANG_Fortran03: |
19868 | case DW_LANG_Fortran08: | |
e142c38c | 19869 | cu->language = language_fortran; |
c906108c | 19870 | break; |
a766d390 DE |
19871 | case DW_LANG_Go: |
19872 | cu->language = language_go; | |
19873 | break; | |
c906108c | 19874 | case DW_LANG_Mips_Assembler: |
e142c38c | 19875 | cu->language = language_asm; |
c906108c SS |
19876 | break; |
19877 | case DW_LANG_Ada83: | |
8aaf0b47 | 19878 | case DW_LANG_Ada95: |
bc5f45f8 JB |
19879 | cu->language = language_ada; |
19880 | break; | |
72019c9c GM |
19881 | case DW_LANG_Modula2: |
19882 | cu->language = language_m2; | |
19883 | break; | |
fe8e67fd PM |
19884 | case DW_LANG_Pascal83: |
19885 | cu->language = language_pascal; | |
19886 | break; | |
22566fbd DJ |
19887 | case DW_LANG_ObjC: |
19888 | cu->language = language_objc; | |
19889 | break; | |
c44af4eb TT |
19890 | case DW_LANG_Rust: |
19891 | case DW_LANG_Rust_old: | |
19892 | cu->language = language_rust; | |
19893 | break; | |
c906108c SS |
19894 | case DW_LANG_Cobol74: |
19895 | case DW_LANG_Cobol85: | |
c906108c | 19896 | default: |
e142c38c | 19897 | cu->language = language_minimal; |
c906108c SS |
19898 | break; |
19899 | } | |
e142c38c | 19900 | cu->language_defn = language_def (cu->language); |
c906108c SS |
19901 | } |
19902 | ||
19903 | /* Return the named attribute or NULL if not there. */ | |
19904 | ||
19905 | static struct attribute * | |
e142c38c | 19906 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 19907 | { |
a48e046c | 19908 | for (;;) |
c906108c | 19909 | { |
a48e046c TT |
19910 | unsigned int i; |
19911 | struct attribute *spec = NULL; | |
19912 | ||
19913 | for (i = 0; i < die->num_attrs; ++i) | |
19914 | { | |
19915 | if (die->attrs[i].name == name) | |
19916 | return &die->attrs[i]; | |
19917 | if (die->attrs[i].name == DW_AT_specification | |
19918 | || die->attrs[i].name == DW_AT_abstract_origin) | |
19919 | spec = &die->attrs[i]; | |
19920 | } | |
19921 | ||
19922 | if (!spec) | |
19923 | break; | |
c906108c | 19924 | |
f2f0e013 | 19925 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 19926 | } |
c5aa993b | 19927 | |
c906108c SS |
19928 | return NULL; |
19929 | } | |
19930 | ||
348e048f DE |
19931 | /* Return the named attribute or NULL if not there, |
19932 | but do not follow DW_AT_specification, etc. | |
19933 | This is for use in contexts where we're reading .debug_types dies. | |
19934 | Following DW_AT_specification, DW_AT_abstract_origin will take us | |
19935 | back up the chain, and we want to go down. */ | |
19936 | ||
19937 | static struct attribute * | |
45e58e77 | 19938 | dwarf2_attr_no_follow (struct die_info *die, unsigned int name) |
348e048f DE |
19939 | { |
19940 | unsigned int i; | |
19941 | ||
19942 | for (i = 0; i < die->num_attrs; ++i) | |
19943 | if (die->attrs[i].name == name) | |
19944 | return &die->attrs[i]; | |
19945 | ||
19946 | return NULL; | |
19947 | } | |
19948 | ||
7d45c7c3 KB |
19949 | /* Return the string associated with a string-typed attribute, or NULL if it |
19950 | is either not found or is of an incorrect type. */ | |
19951 | ||
19952 | static const char * | |
19953 | dwarf2_string_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) | |
19954 | { | |
19955 | struct attribute *attr; | |
19956 | const char *str = NULL; | |
19957 | ||
19958 | attr = dwarf2_attr (die, name, cu); | |
19959 | ||
19960 | if (attr != NULL) | |
19961 | { | |
43988095 | 19962 | if (attr->form == DW_FORM_strp || attr->form == DW_FORM_line_strp |
b3340438 L |
19963 | || attr->form == DW_FORM_string |
19964 | || attr->form == DW_FORM_GNU_str_index | |
16eb6b2d | 19965 | || attr->form == DW_FORM_GNU_strp_alt) |
7d45c7c3 KB |
19966 | str = DW_STRING (attr); |
19967 | else | |
b98664d3 | 19968 | complaint (_("string type expected for attribute %s for " |
9d8780f0 SM |
19969 | "DIE at %s in module %s"), |
19970 | dwarf_attr_name (name), sect_offset_str (die->sect_off), | |
518817b3 | 19971 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
7d45c7c3 KB |
19972 | } |
19973 | ||
19974 | return str; | |
19975 | } | |
19976 | ||
05cf31d1 JB |
19977 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
19978 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 19979 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
19980 | |
19981 | static int | |
19982 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
19983 | { | |
19984 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
19985 | ||
19986 | return (attr && DW_UNSND (attr)); | |
19987 | } | |
19988 | ||
3ca72b44 | 19989 | static int |
e142c38c | 19990 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 19991 | { |
05cf31d1 JB |
19992 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
19993 | which value is non-zero. However, we have to be careful with | |
19994 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
19995 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
19996 | end up accidently finding a declaration attribute that belongs | |
19997 | to a different DIE referenced by the specification attribute, | |
19998 | even though the given DIE does not have a declaration attribute. */ | |
19999 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
20000 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
20001 | } |
20002 | ||
63d06c5c | 20003 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 20004 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
20005 | containing the return value on output. If there is no |
20006 | specification, but there is an abstract origin, that is | |
20007 | returned. */ | |
63d06c5c DC |
20008 | |
20009 | static struct die_info * | |
f2f0e013 | 20010 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 20011 | { |
f2f0e013 DJ |
20012 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
20013 | *spec_cu); | |
63d06c5c | 20014 | |
edb3359d DJ |
20015 | if (spec_attr == NULL) |
20016 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
20017 | ||
63d06c5c DC |
20018 | if (spec_attr == NULL) |
20019 | return NULL; | |
20020 | else | |
f2f0e013 | 20021 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 20022 | } |
c906108c | 20023 | |
527f3840 JK |
20024 | /* Stub for free_line_header to match void * callback types. */ |
20025 | ||
20026 | static void | |
20027 | free_line_header_voidp (void *arg) | |
20028 | { | |
9a3c8263 | 20029 | struct line_header *lh = (struct line_header *) arg; |
527f3840 | 20030 | |
fff8551c | 20031 | delete lh; |
527f3840 JK |
20032 | } |
20033 | ||
fff8551c PA |
20034 | void |
20035 | line_header::add_include_dir (const char *include_dir) | |
c906108c | 20036 | { |
27e0867f | 20037 | if (dwarf_line_debug >= 2) |
fff8551c PA |
20038 | fprintf_unfiltered (gdb_stdlog, "Adding dir %zu: %s\n", |
20039 | include_dirs.size () + 1, include_dir); | |
27e0867f | 20040 | |
fff8551c | 20041 | include_dirs.push_back (include_dir); |
debd256d | 20042 | } |
6e70227d | 20043 | |
fff8551c PA |
20044 | void |
20045 | line_header::add_file_name (const char *name, | |
ecfb656c | 20046 | dir_index d_index, |
fff8551c PA |
20047 | unsigned int mod_time, |
20048 | unsigned int length) | |
debd256d | 20049 | { |
27e0867f DE |
20050 | if (dwarf_line_debug >= 2) |
20051 | fprintf_unfiltered (gdb_stdlog, "Adding file %u: %s\n", | |
fff8551c | 20052 | (unsigned) file_names.size () + 1, name); |
27e0867f | 20053 | |
ecfb656c | 20054 | file_names.emplace_back (name, d_index, mod_time, length); |
debd256d | 20055 | } |
6e70227d | 20056 | |
83769d0b | 20057 | /* A convenience function to find the proper .debug_line section for a CU. */ |
36586728 TT |
20058 | |
20059 | static struct dwarf2_section_info * | |
20060 | get_debug_line_section (struct dwarf2_cu *cu) | |
20061 | { | |
20062 | struct dwarf2_section_info *section; | |
518817b3 SM |
20063 | struct dwarf2_per_objfile *dwarf2_per_objfile |
20064 | = cu->per_cu->dwarf2_per_objfile; | |
36586728 TT |
20065 | |
20066 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
20067 | DWO file. */ | |
20068 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
20069 | section = &cu->dwo_unit->dwo_file->sections.line; | |
20070 | else if (cu->per_cu->is_dwz) | |
20071 | { | |
ed2dc618 | 20072 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
36586728 TT |
20073 | |
20074 | section = &dwz->line; | |
20075 | } | |
20076 | else | |
20077 | section = &dwarf2_per_objfile->line; | |
20078 | ||
20079 | return section; | |
20080 | } | |
20081 | ||
43988095 JK |
20082 | /* Read directory or file name entry format, starting with byte of |
20083 | format count entries, ULEB128 pairs of entry formats, ULEB128 of | |
20084 | entries count and the entries themselves in the described entry | |
20085 | format. */ | |
20086 | ||
20087 | static void | |
ed2dc618 SM |
20088 | read_formatted_entries (struct dwarf2_per_objfile *dwarf2_per_objfile, |
20089 | bfd *abfd, const gdb_byte **bufp, | |
43988095 JK |
20090 | struct line_header *lh, |
20091 | const struct comp_unit_head *cu_header, | |
20092 | void (*callback) (struct line_header *lh, | |
20093 | const char *name, | |
ecfb656c | 20094 | dir_index d_index, |
43988095 JK |
20095 | unsigned int mod_time, |
20096 | unsigned int length)) | |
20097 | { | |
20098 | gdb_byte format_count, formati; | |
20099 | ULONGEST data_count, datai; | |
20100 | const gdb_byte *buf = *bufp; | |
20101 | const gdb_byte *format_header_data; | |
43988095 JK |
20102 | unsigned int bytes_read; |
20103 | ||
20104 | format_count = read_1_byte (abfd, buf); | |
20105 | buf += 1; | |
20106 | format_header_data = buf; | |
20107 | for (formati = 0; formati < format_count; formati++) | |
20108 | { | |
20109 | read_unsigned_leb128 (abfd, buf, &bytes_read); | |
20110 | buf += bytes_read; | |
20111 | read_unsigned_leb128 (abfd, buf, &bytes_read); | |
20112 | buf += bytes_read; | |
20113 | } | |
20114 | ||
20115 | data_count = read_unsigned_leb128 (abfd, buf, &bytes_read); | |
20116 | buf += bytes_read; | |
20117 | for (datai = 0; datai < data_count; datai++) | |
20118 | { | |
20119 | const gdb_byte *format = format_header_data; | |
20120 | struct file_entry fe; | |
20121 | ||
43988095 JK |
20122 | for (formati = 0; formati < format_count; formati++) |
20123 | { | |
ecfb656c | 20124 | ULONGEST content_type = read_unsigned_leb128 (abfd, format, &bytes_read); |
43988095 | 20125 | format += bytes_read; |
43988095 | 20126 | |
ecfb656c | 20127 | ULONGEST form = read_unsigned_leb128 (abfd, format, &bytes_read); |
43988095 | 20128 | format += bytes_read; |
ecfb656c PA |
20129 | |
20130 | gdb::optional<const char *> string; | |
20131 | gdb::optional<unsigned int> uint; | |
20132 | ||
43988095 JK |
20133 | switch (form) |
20134 | { | |
20135 | case DW_FORM_string: | |
ecfb656c | 20136 | string.emplace (read_direct_string (abfd, buf, &bytes_read)); |
43988095 JK |
20137 | buf += bytes_read; |
20138 | break; | |
20139 | ||
20140 | case DW_FORM_line_strp: | |
ed2dc618 SM |
20141 | string.emplace (read_indirect_line_string (dwarf2_per_objfile, |
20142 | abfd, buf, | |
ecfb656c PA |
20143 | cu_header, |
20144 | &bytes_read)); | |
43988095 JK |
20145 | buf += bytes_read; |
20146 | break; | |
20147 | ||
20148 | case DW_FORM_data1: | |
ecfb656c | 20149 | uint.emplace (read_1_byte (abfd, buf)); |
43988095 JK |
20150 | buf += 1; |
20151 | break; | |
20152 | ||
20153 | case DW_FORM_data2: | |
ecfb656c | 20154 | uint.emplace (read_2_bytes (abfd, buf)); |
43988095 JK |
20155 | buf += 2; |
20156 | break; | |
20157 | ||
20158 | case DW_FORM_data4: | |
ecfb656c | 20159 | uint.emplace (read_4_bytes (abfd, buf)); |
43988095 JK |
20160 | buf += 4; |
20161 | break; | |
20162 | ||
20163 | case DW_FORM_data8: | |
ecfb656c | 20164 | uint.emplace (read_8_bytes (abfd, buf)); |
43988095 JK |
20165 | buf += 8; |
20166 | break; | |
20167 | ||
20168 | case DW_FORM_udata: | |
ecfb656c | 20169 | uint.emplace (read_unsigned_leb128 (abfd, buf, &bytes_read)); |
43988095 JK |
20170 | buf += bytes_read; |
20171 | break; | |
20172 | ||
20173 | case DW_FORM_block: | |
20174 | /* It is valid only for DW_LNCT_timestamp which is ignored by | |
20175 | current GDB. */ | |
20176 | break; | |
20177 | } | |
ecfb656c PA |
20178 | |
20179 | switch (content_type) | |
20180 | { | |
20181 | case DW_LNCT_path: | |
20182 | if (string.has_value ()) | |
20183 | fe.name = *string; | |
20184 | break; | |
20185 | case DW_LNCT_directory_index: | |
20186 | if (uint.has_value ()) | |
20187 | fe.d_index = (dir_index) *uint; | |
20188 | break; | |
20189 | case DW_LNCT_timestamp: | |
20190 | if (uint.has_value ()) | |
20191 | fe.mod_time = *uint; | |
20192 | break; | |
20193 | case DW_LNCT_size: | |
20194 | if (uint.has_value ()) | |
20195 | fe.length = *uint; | |
20196 | break; | |
20197 | case DW_LNCT_MD5: | |
20198 | break; | |
20199 | default: | |
b98664d3 | 20200 | complaint (_("Unknown format content type %s"), |
ecfb656c PA |
20201 | pulongest (content_type)); |
20202 | } | |
43988095 JK |
20203 | } |
20204 | ||
ecfb656c | 20205 | callback (lh, fe.name, fe.d_index, fe.mod_time, fe.length); |
43988095 JK |
20206 | } |
20207 | ||
20208 | *bufp = buf; | |
20209 | } | |
20210 | ||
debd256d | 20211 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 20212 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 20213 | to a struct line_header, allocated using xmalloc. |
cd366ee8 DE |
20214 | Returns NULL if there is a problem reading the header, e.g., if it |
20215 | has a version we don't understand. | |
debd256d JB |
20216 | |
20217 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
20218 | the returned object point into the dwarf line section buffer, |
20219 | and must not be freed. */ | |
ae2de4f8 | 20220 | |
fff8551c | 20221 | static line_header_up |
9c541725 | 20222 | dwarf_decode_line_header (sect_offset sect_off, struct dwarf2_cu *cu) |
debd256d | 20223 | { |
d521ce57 | 20224 | const gdb_byte *line_ptr; |
c764a876 | 20225 | unsigned int bytes_read, offset_size; |
debd256d | 20226 | int i; |
d521ce57 | 20227 | const char *cur_dir, *cur_file; |
3019eac3 DE |
20228 | struct dwarf2_section_info *section; |
20229 | bfd *abfd; | |
518817b3 SM |
20230 | struct dwarf2_per_objfile *dwarf2_per_objfile |
20231 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 | 20232 | |
36586728 | 20233 | section = get_debug_line_section (cu); |
3019eac3 DE |
20234 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); |
20235 | if (section->buffer == NULL) | |
debd256d | 20236 | { |
3019eac3 | 20237 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
b98664d3 | 20238 | complaint (_("missing .debug_line.dwo section")); |
3019eac3 | 20239 | else |
b98664d3 | 20240 | complaint (_("missing .debug_line section")); |
debd256d JB |
20241 | return 0; |
20242 | } | |
20243 | ||
fceca515 DE |
20244 | /* We can't do this until we know the section is non-empty. |
20245 | Only then do we know we have such a section. */ | |
a32a8923 | 20246 | abfd = get_section_bfd_owner (section); |
fceca515 | 20247 | |
a738430d MK |
20248 | /* Make sure that at least there's room for the total_length field. |
20249 | That could be 12 bytes long, but we're just going to fudge that. */ | |
9c541725 | 20250 | if (to_underlying (sect_off) + 4 >= section->size) |
debd256d | 20251 | { |
4d3c2250 | 20252 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
20253 | return 0; |
20254 | } | |
20255 | ||
fff8551c | 20256 | line_header_up lh (new line_header ()); |
debd256d | 20257 | |
9c541725 | 20258 | lh->sect_off = sect_off; |
527f3840 JK |
20259 | lh->offset_in_dwz = cu->per_cu->is_dwz; |
20260 | ||
9c541725 | 20261 | line_ptr = section->buffer + to_underlying (sect_off); |
debd256d | 20262 | |
a738430d | 20263 | /* Read in the header. */ |
6e70227d | 20264 | lh->total_length = |
c764a876 DE |
20265 | read_checked_initial_length_and_offset (abfd, line_ptr, &cu->header, |
20266 | &bytes_read, &offset_size); | |
debd256d | 20267 | line_ptr += bytes_read; |
3019eac3 | 20268 | if (line_ptr + lh->total_length > (section->buffer + section->size)) |
debd256d | 20269 | { |
4d3c2250 | 20270 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
20271 | return 0; |
20272 | } | |
20273 | lh->statement_program_end = line_ptr + lh->total_length; | |
20274 | lh->version = read_2_bytes (abfd, line_ptr); | |
20275 | line_ptr += 2; | |
43988095 | 20276 | if (lh->version > 5) |
cd366ee8 DE |
20277 | { |
20278 | /* This is a version we don't understand. The format could have | |
20279 | changed in ways we don't handle properly so just punt. */ | |
b98664d3 | 20280 | complaint (_("unsupported version in .debug_line section")); |
cd366ee8 DE |
20281 | return NULL; |
20282 | } | |
43988095 JK |
20283 | if (lh->version >= 5) |
20284 | { | |
20285 | gdb_byte segment_selector_size; | |
20286 | ||
20287 | /* Skip address size. */ | |
20288 | read_1_byte (abfd, line_ptr); | |
20289 | line_ptr += 1; | |
20290 | ||
20291 | segment_selector_size = read_1_byte (abfd, line_ptr); | |
20292 | line_ptr += 1; | |
20293 | if (segment_selector_size != 0) | |
20294 | { | |
b98664d3 | 20295 | complaint (_("unsupported segment selector size %u " |
43988095 JK |
20296 | "in .debug_line section"), |
20297 | segment_selector_size); | |
20298 | return NULL; | |
20299 | } | |
20300 | } | |
c764a876 DE |
20301 | lh->header_length = read_offset_1 (abfd, line_ptr, offset_size); |
20302 | line_ptr += offset_size; | |
debd256d JB |
20303 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); |
20304 | line_ptr += 1; | |
2dc7f7b3 TT |
20305 | if (lh->version >= 4) |
20306 | { | |
20307 | lh->maximum_ops_per_instruction = read_1_byte (abfd, line_ptr); | |
20308 | line_ptr += 1; | |
20309 | } | |
20310 | else | |
20311 | lh->maximum_ops_per_instruction = 1; | |
20312 | ||
20313 | if (lh->maximum_ops_per_instruction == 0) | |
20314 | { | |
20315 | lh->maximum_ops_per_instruction = 1; | |
b98664d3 | 20316 | complaint (_("invalid maximum_ops_per_instruction " |
3e43a32a | 20317 | "in `.debug_line' section")); |
2dc7f7b3 TT |
20318 | } |
20319 | ||
debd256d JB |
20320 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); |
20321 | line_ptr += 1; | |
20322 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
20323 | line_ptr += 1; | |
20324 | lh->line_range = read_1_byte (abfd, line_ptr); | |
20325 | line_ptr += 1; | |
20326 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
20327 | line_ptr += 1; | |
fff8551c | 20328 | lh->standard_opcode_lengths.reset (new unsigned char[lh->opcode_base]); |
debd256d JB |
20329 | |
20330 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
20331 | for (i = 1; i < lh->opcode_base; ++i) | |
20332 | { | |
20333 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
20334 | line_ptr += 1; | |
20335 | } | |
20336 | ||
43988095 | 20337 | if (lh->version >= 5) |
debd256d | 20338 | { |
43988095 | 20339 | /* Read directory table. */ |
ed2dc618 SM |
20340 | read_formatted_entries (dwarf2_per_objfile, abfd, &line_ptr, lh.get (), |
20341 | &cu->header, | |
fff8551c | 20342 | [] (struct line_header *lh, const char *name, |
ecfb656c | 20343 | dir_index d_index, unsigned int mod_time, |
fff8551c PA |
20344 | unsigned int length) |
20345 | { | |
20346 | lh->add_include_dir (name); | |
20347 | }); | |
debd256d | 20348 | |
43988095 | 20349 | /* Read file name table. */ |
ed2dc618 SM |
20350 | read_formatted_entries (dwarf2_per_objfile, abfd, &line_ptr, lh.get (), |
20351 | &cu->header, | |
fff8551c | 20352 | [] (struct line_header *lh, const char *name, |
ecfb656c | 20353 | dir_index d_index, unsigned int mod_time, |
fff8551c PA |
20354 | unsigned int length) |
20355 | { | |
ecfb656c | 20356 | lh->add_file_name (name, d_index, mod_time, length); |
fff8551c | 20357 | }); |
43988095 JK |
20358 | } |
20359 | else | |
debd256d | 20360 | { |
43988095 JK |
20361 | /* Read directory table. */ |
20362 | while ((cur_dir = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) | |
20363 | { | |
20364 | line_ptr += bytes_read; | |
fff8551c | 20365 | lh->add_include_dir (cur_dir); |
43988095 | 20366 | } |
debd256d JB |
20367 | line_ptr += bytes_read; |
20368 | ||
43988095 JK |
20369 | /* Read file name table. */ |
20370 | while ((cur_file = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) | |
20371 | { | |
ecfb656c PA |
20372 | unsigned int mod_time, length; |
20373 | dir_index d_index; | |
43988095 JK |
20374 | |
20375 | line_ptr += bytes_read; | |
ecfb656c | 20376 | d_index = (dir_index) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
43988095 JK |
20377 | line_ptr += bytes_read; |
20378 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20379 | line_ptr += bytes_read; | |
20380 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20381 | line_ptr += bytes_read; | |
20382 | ||
ecfb656c | 20383 | lh->add_file_name (cur_file, d_index, mod_time, length); |
43988095 JK |
20384 | } |
20385 | line_ptr += bytes_read; | |
debd256d | 20386 | } |
6e70227d | 20387 | lh->statement_program_start = line_ptr; |
debd256d | 20388 | |
3019eac3 | 20389 | if (line_ptr > (section->buffer + section->size)) |
b98664d3 | 20390 | complaint (_("line number info header doesn't " |
3e43a32a | 20391 | "fit in `.debug_line' section")); |
debd256d | 20392 | |
debd256d JB |
20393 | return lh; |
20394 | } | |
c906108c | 20395 | |
c6da4cef DE |
20396 | /* Subroutine of dwarf_decode_lines to simplify it. |
20397 | Return the file name of the psymtab for included file FILE_INDEX | |
20398 | in line header LH of PST. | |
20399 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
c89b44cd TT |
20400 | If space for the result is malloc'd, *NAME_HOLDER will be set. |
20401 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. */ | |
c6da4cef | 20402 | |
d521ce57 | 20403 | static const char * |
c6da4cef DE |
20404 | psymtab_include_file_name (const struct line_header *lh, int file_index, |
20405 | const struct partial_symtab *pst, | |
c89b44cd TT |
20406 | const char *comp_dir, |
20407 | gdb::unique_xmalloc_ptr<char> *name_holder) | |
c6da4cef | 20408 | { |
8c43009f | 20409 | const file_entry &fe = lh->file_names[file_index]; |
d521ce57 TT |
20410 | const char *include_name = fe.name; |
20411 | const char *include_name_to_compare = include_name; | |
72b9f47f | 20412 | const char *pst_filename; |
c6da4cef DE |
20413 | int file_is_pst; |
20414 | ||
8c43009f | 20415 | const char *dir_name = fe.include_dir (lh); |
c6da4cef | 20416 | |
c89b44cd | 20417 | gdb::unique_xmalloc_ptr<char> hold_compare; |
c6da4cef DE |
20418 | if (!IS_ABSOLUTE_PATH (include_name) |
20419 | && (dir_name != NULL || comp_dir != NULL)) | |
20420 | { | |
20421 | /* Avoid creating a duplicate psymtab for PST. | |
20422 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
20423 | Before we do the comparison, however, we need to account | |
20424 | for DIR_NAME and COMP_DIR. | |
20425 | First prepend dir_name (if non-NULL). If we still don't | |
20426 | have an absolute path prepend comp_dir (if non-NULL). | |
20427 | However, the directory we record in the include-file's | |
20428 | psymtab does not contain COMP_DIR (to match the | |
20429 | corresponding symtab(s)). | |
20430 | ||
20431 | Example: | |
20432 | ||
20433 | bash$ cd /tmp | |
20434 | bash$ gcc -g ./hello.c | |
20435 | include_name = "hello.c" | |
20436 | dir_name = "." | |
20437 | DW_AT_comp_dir = comp_dir = "/tmp" | |
5f52445b YQ |
20438 | DW_AT_name = "./hello.c" |
20439 | ||
20440 | */ | |
c6da4cef DE |
20441 | |
20442 | if (dir_name != NULL) | |
20443 | { | |
c89b44cd TT |
20444 | name_holder->reset (concat (dir_name, SLASH_STRING, |
20445 | include_name, (char *) NULL)); | |
20446 | include_name = name_holder->get (); | |
c6da4cef | 20447 | include_name_to_compare = include_name; |
c6da4cef DE |
20448 | } |
20449 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
20450 | { | |
c89b44cd TT |
20451 | hold_compare.reset (concat (comp_dir, SLASH_STRING, |
20452 | include_name, (char *) NULL)); | |
20453 | include_name_to_compare = hold_compare.get (); | |
c6da4cef DE |
20454 | } |
20455 | } | |
20456 | ||
20457 | pst_filename = pst->filename; | |
c89b44cd | 20458 | gdb::unique_xmalloc_ptr<char> copied_name; |
c6da4cef DE |
20459 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) |
20460 | { | |
c89b44cd TT |
20461 | copied_name.reset (concat (pst->dirname, SLASH_STRING, |
20462 | pst_filename, (char *) NULL)); | |
20463 | pst_filename = copied_name.get (); | |
c6da4cef DE |
20464 | } |
20465 | ||
1e3fad37 | 20466 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef | 20467 | |
c6da4cef DE |
20468 | if (file_is_pst) |
20469 | return NULL; | |
20470 | return include_name; | |
20471 | } | |
20472 | ||
d9b3de22 DE |
20473 | /* State machine to track the state of the line number program. */ |
20474 | ||
6f77053d | 20475 | class lnp_state_machine |
d9b3de22 | 20476 | { |
6f77053d PA |
20477 | public: |
20478 | /* Initialize a machine state for the start of a line number | |
20479 | program. */ | |
804d2729 TT |
20480 | lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, line_header *lh, |
20481 | bool record_lines_p); | |
6f77053d | 20482 | |
8c43009f PA |
20483 | file_entry *current_file () |
20484 | { | |
20485 | /* lh->file_names is 0-based, but the file name numbers in the | |
20486 | statement program are 1-based. */ | |
6f77053d PA |
20487 | return m_line_header->file_name_at (m_file); |
20488 | } | |
20489 | ||
20490 | /* Record the line in the state machine. END_SEQUENCE is true if | |
20491 | we're processing the end of a sequence. */ | |
20492 | void record_line (bool end_sequence); | |
20493 | ||
7ab6656f OJ |
20494 | /* Check ADDRESS is zero and less than UNRELOCATED_LOWPC and if true |
20495 | nop-out rest of the lines in this sequence. */ | |
6f77053d PA |
20496 | void check_line_address (struct dwarf2_cu *cu, |
20497 | const gdb_byte *line_ptr, | |
7ab6656f | 20498 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address); |
6f77053d PA |
20499 | |
20500 | void handle_set_discriminator (unsigned int discriminator) | |
20501 | { | |
20502 | m_discriminator = discriminator; | |
20503 | m_line_has_non_zero_discriminator |= discriminator != 0; | |
20504 | } | |
20505 | ||
20506 | /* Handle DW_LNE_set_address. */ | |
20507 | void handle_set_address (CORE_ADDR baseaddr, CORE_ADDR address) | |
20508 | { | |
20509 | m_op_index = 0; | |
20510 | address += baseaddr; | |
20511 | m_address = gdbarch_adjust_dwarf2_line (m_gdbarch, address, false); | |
20512 | } | |
20513 | ||
20514 | /* Handle DW_LNS_advance_pc. */ | |
20515 | void handle_advance_pc (CORE_ADDR adjust); | |
20516 | ||
20517 | /* Handle a special opcode. */ | |
20518 | void handle_special_opcode (unsigned char op_code); | |
20519 | ||
20520 | /* Handle DW_LNS_advance_line. */ | |
20521 | void handle_advance_line (int line_delta) | |
20522 | { | |
20523 | advance_line (line_delta); | |
20524 | } | |
20525 | ||
20526 | /* Handle DW_LNS_set_file. */ | |
20527 | void handle_set_file (file_name_index file); | |
20528 | ||
20529 | /* Handle DW_LNS_negate_stmt. */ | |
20530 | void handle_negate_stmt () | |
20531 | { | |
20532 | m_is_stmt = !m_is_stmt; | |
20533 | } | |
20534 | ||
20535 | /* Handle DW_LNS_const_add_pc. */ | |
20536 | void handle_const_add_pc (); | |
20537 | ||
20538 | /* Handle DW_LNS_fixed_advance_pc. */ | |
20539 | void handle_fixed_advance_pc (CORE_ADDR addr_adj) | |
20540 | { | |
20541 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20542 | m_op_index = 0; | |
20543 | } | |
20544 | ||
20545 | /* Handle DW_LNS_copy. */ | |
20546 | void handle_copy () | |
20547 | { | |
20548 | record_line (false); | |
20549 | m_discriminator = 0; | |
20550 | } | |
20551 | ||
20552 | /* Handle DW_LNE_end_sequence. */ | |
20553 | void handle_end_sequence () | |
20554 | { | |
804d2729 | 20555 | m_currently_recording_lines = true; |
6f77053d PA |
20556 | } |
20557 | ||
20558 | private: | |
20559 | /* Advance the line by LINE_DELTA. */ | |
20560 | void advance_line (int line_delta) | |
20561 | { | |
20562 | m_line += line_delta; | |
20563 | ||
20564 | if (line_delta != 0) | |
20565 | m_line_has_non_zero_discriminator = m_discriminator != 0; | |
8c43009f PA |
20566 | } |
20567 | ||
804d2729 TT |
20568 | struct dwarf2_cu *m_cu; |
20569 | ||
6f77053d PA |
20570 | gdbarch *m_gdbarch; |
20571 | ||
20572 | /* True if we're recording lines. | |
20573 | Otherwise we're building partial symtabs and are just interested in | |
20574 | finding include files mentioned by the line number program. */ | |
20575 | bool m_record_lines_p; | |
20576 | ||
8c43009f | 20577 | /* The line number header. */ |
6f77053d | 20578 | line_header *m_line_header; |
8c43009f | 20579 | |
6f77053d PA |
20580 | /* These are part of the standard DWARF line number state machine, |
20581 | and initialized according to the DWARF spec. */ | |
d9b3de22 | 20582 | |
6f77053d | 20583 | unsigned char m_op_index = 0; |
8c43009f | 20584 | /* The line table index (1-based) of the current file. */ |
6f77053d PA |
20585 | file_name_index m_file = (file_name_index) 1; |
20586 | unsigned int m_line = 1; | |
20587 | ||
20588 | /* These are initialized in the constructor. */ | |
20589 | ||
20590 | CORE_ADDR m_address; | |
20591 | bool m_is_stmt; | |
20592 | unsigned int m_discriminator; | |
d9b3de22 DE |
20593 | |
20594 | /* Additional bits of state we need to track. */ | |
20595 | ||
20596 | /* The last file that we called dwarf2_start_subfile for. | |
20597 | This is only used for TLLs. */ | |
6f77053d | 20598 | unsigned int m_last_file = 0; |
d9b3de22 | 20599 | /* The last file a line number was recorded for. */ |
6f77053d | 20600 | struct subfile *m_last_subfile = NULL; |
d9b3de22 | 20601 | |
804d2729 TT |
20602 | /* When true, record the lines we decode. */ |
20603 | bool m_currently_recording_lines = false; | |
d9b3de22 DE |
20604 | |
20605 | /* The last line number that was recorded, used to coalesce | |
20606 | consecutive entries for the same line. This can happen, for | |
20607 | example, when discriminators are present. PR 17276. */ | |
6f77053d PA |
20608 | unsigned int m_last_line = 0; |
20609 | bool m_line_has_non_zero_discriminator = false; | |
8c43009f | 20610 | }; |
d9b3de22 | 20611 | |
6f77053d PA |
20612 | void |
20613 | lnp_state_machine::handle_advance_pc (CORE_ADDR adjust) | |
20614 | { | |
20615 | CORE_ADDR addr_adj = (((m_op_index + adjust) | |
20616 | / m_line_header->maximum_ops_per_instruction) | |
20617 | * m_line_header->minimum_instruction_length); | |
20618 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20619 | m_op_index = ((m_op_index + adjust) | |
20620 | % m_line_header->maximum_ops_per_instruction); | |
20621 | } | |
d9b3de22 | 20622 | |
6f77053d PA |
20623 | void |
20624 | lnp_state_machine::handle_special_opcode (unsigned char op_code) | |
d9b3de22 | 20625 | { |
6f77053d PA |
20626 | unsigned char adj_opcode = op_code - m_line_header->opcode_base; |
20627 | CORE_ADDR addr_adj = (((m_op_index | |
20628 | + (adj_opcode / m_line_header->line_range)) | |
20629 | / m_line_header->maximum_ops_per_instruction) | |
20630 | * m_line_header->minimum_instruction_length); | |
20631 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20632 | m_op_index = ((m_op_index + (adj_opcode / m_line_header->line_range)) | |
20633 | % m_line_header->maximum_ops_per_instruction); | |
d9b3de22 | 20634 | |
6f77053d PA |
20635 | int line_delta = (m_line_header->line_base |
20636 | + (adj_opcode % m_line_header->line_range)); | |
20637 | advance_line (line_delta); | |
20638 | record_line (false); | |
20639 | m_discriminator = 0; | |
20640 | } | |
d9b3de22 | 20641 | |
6f77053d PA |
20642 | void |
20643 | lnp_state_machine::handle_set_file (file_name_index file) | |
20644 | { | |
20645 | m_file = file; | |
20646 | ||
20647 | const file_entry *fe = current_file (); | |
20648 | if (fe == NULL) | |
20649 | dwarf2_debug_line_missing_file_complaint (); | |
20650 | else if (m_record_lines_p) | |
20651 | { | |
20652 | const char *dir = fe->include_dir (m_line_header); | |
20653 | ||
804d2729 | 20654 | m_last_subfile = m_cu->builder->get_current_subfile (); |
6f77053d | 20655 | m_line_has_non_zero_discriminator = m_discriminator != 0; |
804d2729 | 20656 | dwarf2_start_subfile (m_cu, fe->name, dir); |
6f77053d PA |
20657 | } |
20658 | } | |
20659 | ||
20660 | void | |
20661 | lnp_state_machine::handle_const_add_pc () | |
20662 | { | |
20663 | CORE_ADDR adjust | |
20664 | = (255 - m_line_header->opcode_base) / m_line_header->line_range; | |
20665 | ||
20666 | CORE_ADDR addr_adj | |
20667 | = (((m_op_index + adjust) | |
20668 | / m_line_header->maximum_ops_per_instruction) | |
20669 | * m_line_header->minimum_instruction_length); | |
20670 | ||
20671 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20672 | m_op_index = ((m_op_index + adjust) | |
20673 | % m_line_header->maximum_ops_per_instruction); | |
20674 | } | |
d9b3de22 | 20675 | |
a05a36a5 DE |
20676 | /* Return non-zero if we should add LINE to the line number table. |
20677 | LINE is the line to add, LAST_LINE is the last line that was added, | |
20678 | LAST_SUBFILE is the subfile for LAST_LINE. | |
20679 | LINE_HAS_NON_ZERO_DISCRIMINATOR is non-zero if LINE has ever | |
20680 | had a non-zero discriminator. | |
20681 | ||
20682 | We have to be careful in the presence of discriminators. | |
20683 | E.g., for this line: | |
20684 | ||
20685 | for (i = 0; i < 100000; i++); | |
20686 | ||
20687 | clang can emit four line number entries for that one line, | |
20688 | each with a different discriminator. | |
20689 | See gdb.dwarf2/dw2-single-line-discriminators.exp for an example. | |
20690 | ||
20691 | However, we want gdb to coalesce all four entries into one. | |
20692 | Otherwise the user could stepi into the middle of the line and | |
20693 | gdb would get confused about whether the pc really was in the | |
20694 | middle of the line. | |
20695 | ||
20696 | Things are further complicated by the fact that two consecutive | |
20697 | line number entries for the same line is a heuristic used by gcc | |
20698 | to denote the end of the prologue. So we can't just discard duplicate | |
20699 | entries, we have to be selective about it. The heuristic we use is | |
20700 | that we only collapse consecutive entries for the same line if at least | |
20701 | one of those entries has a non-zero discriminator. PR 17276. | |
20702 | ||
20703 | Note: Addresses in the line number state machine can never go backwards | |
20704 | within one sequence, thus this coalescing is ok. */ | |
20705 | ||
20706 | static int | |
804d2729 TT |
20707 | dwarf_record_line_p (struct dwarf2_cu *cu, |
20708 | unsigned int line, unsigned int last_line, | |
a05a36a5 DE |
20709 | int line_has_non_zero_discriminator, |
20710 | struct subfile *last_subfile) | |
20711 | { | |
804d2729 | 20712 | if (cu->builder->get_current_subfile () != last_subfile) |
a05a36a5 DE |
20713 | return 1; |
20714 | if (line != last_line) | |
20715 | return 1; | |
20716 | /* Same line for the same file that we've seen already. | |
20717 | As a last check, for pr 17276, only record the line if the line | |
20718 | has never had a non-zero discriminator. */ | |
20719 | if (!line_has_non_zero_discriminator) | |
20720 | return 1; | |
20721 | return 0; | |
20722 | } | |
20723 | ||
804d2729 TT |
20724 | /* Use the CU's builder to record line number LINE beginning at |
20725 | address ADDRESS in the line table of subfile SUBFILE. */ | |
252a6764 DE |
20726 | |
20727 | static void | |
d9b3de22 DE |
20728 | dwarf_record_line_1 (struct gdbarch *gdbarch, struct subfile *subfile, |
20729 | unsigned int line, CORE_ADDR address, | |
804d2729 | 20730 | struct dwarf2_cu *cu) |
252a6764 DE |
20731 | { |
20732 | CORE_ADDR addr = gdbarch_addr_bits_remove (gdbarch, address); | |
20733 | ||
27e0867f DE |
20734 | if (dwarf_line_debug) |
20735 | { | |
20736 | fprintf_unfiltered (gdb_stdlog, | |
20737 | "Recording line %u, file %s, address %s\n", | |
20738 | line, lbasename (subfile->name), | |
20739 | paddress (gdbarch, address)); | |
20740 | } | |
20741 | ||
804d2729 TT |
20742 | if (cu != nullptr) |
20743 | cu->builder->record_line (subfile, line, addr); | |
252a6764 DE |
20744 | } |
20745 | ||
20746 | /* Subroutine of dwarf_decode_lines_1 to simplify it. | |
20747 | Mark the end of a set of line number records. | |
d9b3de22 | 20748 | The arguments are the same as for dwarf_record_line_1. |
252a6764 DE |
20749 | If SUBFILE is NULL the request is ignored. */ |
20750 | ||
20751 | static void | |
20752 | dwarf_finish_line (struct gdbarch *gdbarch, struct subfile *subfile, | |
804d2729 | 20753 | CORE_ADDR address, struct dwarf2_cu *cu) |
252a6764 | 20754 | { |
27e0867f DE |
20755 | if (subfile == NULL) |
20756 | return; | |
20757 | ||
20758 | if (dwarf_line_debug) | |
20759 | { | |
20760 | fprintf_unfiltered (gdb_stdlog, | |
20761 | "Finishing current line, file %s, address %s\n", | |
20762 | lbasename (subfile->name), | |
20763 | paddress (gdbarch, address)); | |
20764 | } | |
20765 | ||
804d2729 | 20766 | dwarf_record_line_1 (gdbarch, subfile, 0, address, cu); |
d9b3de22 DE |
20767 | } |
20768 | ||
6f77053d PA |
20769 | void |
20770 | lnp_state_machine::record_line (bool end_sequence) | |
d9b3de22 | 20771 | { |
d9b3de22 DE |
20772 | if (dwarf_line_debug) |
20773 | { | |
20774 | fprintf_unfiltered (gdb_stdlog, | |
20775 | "Processing actual line %u: file %u," | |
20776 | " address %s, is_stmt %u, discrim %u\n", | |
6f77053d PA |
20777 | m_line, to_underlying (m_file), |
20778 | paddress (m_gdbarch, m_address), | |
20779 | m_is_stmt, m_discriminator); | |
d9b3de22 DE |
20780 | } |
20781 | ||
6f77053d | 20782 | file_entry *fe = current_file (); |
8c43009f PA |
20783 | |
20784 | if (fe == NULL) | |
d9b3de22 DE |
20785 | dwarf2_debug_line_missing_file_complaint (); |
20786 | /* For now we ignore lines not starting on an instruction boundary. | |
20787 | But not when processing end_sequence for compatibility with the | |
20788 | previous version of the code. */ | |
6f77053d | 20789 | else if (m_op_index == 0 || end_sequence) |
d9b3de22 | 20790 | { |
8c43009f | 20791 | fe->included_p = 1; |
6f77053d | 20792 | if (m_record_lines_p && m_is_stmt) |
d9b3de22 | 20793 | { |
804d2729 TT |
20794 | if (m_last_subfile != m_cu->builder->get_current_subfile () |
20795 | || end_sequence) | |
d9b3de22 | 20796 | { |
804d2729 TT |
20797 | dwarf_finish_line (m_gdbarch, m_last_subfile, m_address, |
20798 | m_currently_recording_lines ? m_cu : nullptr); | |
d9b3de22 DE |
20799 | } |
20800 | ||
20801 | if (!end_sequence) | |
20802 | { | |
804d2729 | 20803 | if (dwarf_record_line_p (m_cu, m_line, m_last_line, |
6f77053d PA |
20804 | m_line_has_non_zero_discriminator, |
20805 | m_last_subfile)) | |
d9b3de22 | 20806 | { |
804d2729 TT |
20807 | dwarf_record_line_1 (m_gdbarch, |
20808 | m_cu->builder->get_current_subfile (), | |
6f77053d | 20809 | m_line, m_address, |
804d2729 | 20810 | m_currently_recording_lines ? m_cu : nullptr); |
d9b3de22 | 20811 | } |
804d2729 | 20812 | m_last_subfile = m_cu->builder->get_current_subfile (); |
6f77053d | 20813 | m_last_line = m_line; |
d9b3de22 DE |
20814 | } |
20815 | } | |
20816 | } | |
20817 | } | |
20818 | ||
804d2729 TT |
20819 | lnp_state_machine::lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, |
20820 | line_header *lh, bool record_lines_p) | |
d9b3de22 | 20821 | { |
804d2729 | 20822 | m_cu = cu; |
6f77053d PA |
20823 | m_gdbarch = arch; |
20824 | m_record_lines_p = record_lines_p; | |
20825 | m_line_header = lh; | |
d9b3de22 | 20826 | |
804d2729 | 20827 | m_currently_recording_lines = true; |
d9b3de22 | 20828 | |
d9b3de22 DE |
20829 | /* Call `gdbarch_adjust_dwarf2_line' on the initial 0 address as if there |
20830 | was a line entry for it so that the backend has a chance to adjust it | |
20831 | and also record it in case it needs it. This is currently used by MIPS | |
20832 | code, cf. `mips_adjust_dwarf2_line'. */ | |
6f77053d PA |
20833 | m_address = gdbarch_adjust_dwarf2_line (arch, 0, 0); |
20834 | m_is_stmt = lh->default_is_stmt; | |
20835 | m_discriminator = 0; | |
252a6764 DE |
20836 | } |
20837 | ||
6f77053d PA |
20838 | void |
20839 | lnp_state_machine::check_line_address (struct dwarf2_cu *cu, | |
20840 | const gdb_byte *line_ptr, | |
7ab6656f | 20841 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address) |
924c2928 | 20842 | { |
7ab6656f OJ |
20843 | /* If ADDRESS < UNRELOCATED_LOWPC then it's not a usable value, it's outside |
20844 | the pc range of the CU. However, we restrict the test to only ADDRESS | |
20845 | values of zero to preserve GDB's previous behaviour which is to handle | |
20846 | the specific case of a function being GC'd by the linker. */ | |
924c2928 | 20847 | |
7ab6656f | 20848 | if (address == 0 && address < unrelocated_lowpc) |
924c2928 DE |
20849 | { |
20850 | /* This line table is for a function which has been | |
20851 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
20852 | ||
518817b3 | 20853 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
924c2928 DE |
20854 | long line_offset = line_ptr - get_debug_line_section (cu)->buffer; |
20855 | ||
b98664d3 | 20856 | complaint (_(".debug_line address at offset 0x%lx is 0 [in module %s]"), |
924c2928 | 20857 | line_offset, objfile_name (objfile)); |
804d2729 TT |
20858 | m_currently_recording_lines = false; |
20859 | /* Note: m_currently_recording_lines is left as false until we see | |
20860 | DW_LNE_end_sequence. */ | |
924c2928 DE |
20861 | } |
20862 | } | |
20863 | ||
f3f5162e | 20864 | /* Subroutine of dwarf_decode_lines to simplify it. |
d9b3de22 DE |
20865 | Process the line number information in LH. |
20866 | If DECODE_FOR_PST_P is non-zero, all we do is process the line number | |
20867 | program in order to set included_p for every referenced header. */ | |
debd256d | 20868 | |
c906108c | 20869 | static void |
43f3e411 DE |
20870 | dwarf_decode_lines_1 (struct line_header *lh, struct dwarf2_cu *cu, |
20871 | const int decode_for_pst_p, CORE_ADDR lowpc) | |
c906108c | 20872 | { |
d521ce57 TT |
20873 | const gdb_byte *line_ptr, *extended_end; |
20874 | const gdb_byte *line_end; | |
a8c50c1f | 20875 | unsigned int bytes_read, extended_len; |
699ca60a | 20876 | unsigned char op_code, extended_op; |
e142c38c | 20877 | CORE_ADDR baseaddr; |
518817b3 | 20878 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
f3f5162e | 20879 | bfd *abfd = objfile->obfd; |
fbf65064 | 20880 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
6f77053d PA |
20881 | /* True if we're recording line info (as opposed to building partial |
20882 | symtabs and just interested in finding include files mentioned by | |
20883 | the line number program). */ | |
20884 | bool record_lines_p = !decode_for_pst_p; | |
e142c38c DJ |
20885 | |
20886 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 20887 | |
debd256d JB |
20888 | line_ptr = lh->statement_program_start; |
20889 | line_end = lh->statement_program_end; | |
c906108c SS |
20890 | |
20891 | /* Read the statement sequences until there's nothing left. */ | |
20892 | while (line_ptr < line_end) | |
20893 | { | |
6f77053d PA |
20894 | /* The DWARF line number program state machine. Reset the state |
20895 | machine at the start of each sequence. */ | |
804d2729 | 20896 | lnp_state_machine state_machine (cu, gdbarch, lh, record_lines_p); |
6f77053d | 20897 | bool end_sequence = false; |
d9b3de22 | 20898 | |
8c43009f | 20899 | if (record_lines_p) |
c906108c | 20900 | { |
8c43009f PA |
20901 | /* Start a subfile for the current file of the state |
20902 | machine. */ | |
20903 | const file_entry *fe = state_machine.current_file (); | |
20904 | ||
20905 | if (fe != NULL) | |
804d2729 | 20906 | dwarf2_start_subfile (cu, fe->name, fe->include_dir (lh)); |
c906108c SS |
20907 | } |
20908 | ||
a738430d | 20909 | /* Decode the table. */ |
d9b3de22 | 20910 | while (line_ptr < line_end && !end_sequence) |
c906108c SS |
20911 | { |
20912 | op_code = read_1_byte (abfd, line_ptr); | |
20913 | line_ptr += 1; | |
9aa1fe7e | 20914 | |
debd256d | 20915 | if (op_code >= lh->opcode_base) |
6e70227d | 20916 | { |
8e07a239 | 20917 | /* Special opcode. */ |
6f77053d | 20918 | state_machine.handle_special_opcode (op_code); |
9aa1fe7e GK |
20919 | } |
20920 | else switch (op_code) | |
c906108c SS |
20921 | { |
20922 | case DW_LNS_extended_op: | |
3e43a32a MS |
20923 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
20924 | &bytes_read); | |
473b7be6 | 20925 | line_ptr += bytes_read; |
a8c50c1f | 20926 | extended_end = line_ptr + extended_len; |
c906108c SS |
20927 | extended_op = read_1_byte (abfd, line_ptr); |
20928 | line_ptr += 1; | |
20929 | switch (extended_op) | |
20930 | { | |
20931 | case DW_LNE_end_sequence: | |
6f77053d PA |
20932 | state_machine.handle_end_sequence (); |
20933 | end_sequence = true; | |
c906108c SS |
20934 | break; |
20935 | case DW_LNE_set_address: | |
d9b3de22 DE |
20936 | { |
20937 | CORE_ADDR address | |
20938 | = read_address (abfd, line_ptr, cu, &bytes_read); | |
d9b3de22 | 20939 | line_ptr += bytes_read; |
6f77053d PA |
20940 | |
20941 | state_machine.check_line_address (cu, line_ptr, | |
7ab6656f | 20942 | lowpc - baseaddr, address); |
6f77053d | 20943 | state_machine.handle_set_address (baseaddr, address); |
d9b3de22 | 20944 | } |
c906108c SS |
20945 | break; |
20946 | case DW_LNE_define_file: | |
debd256d | 20947 | { |
d521ce57 | 20948 | const char *cur_file; |
ecfb656c PA |
20949 | unsigned int mod_time, length; |
20950 | dir_index dindex; | |
6e70227d | 20951 | |
3e43a32a MS |
20952 | cur_file = read_direct_string (abfd, line_ptr, |
20953 | &bytes_read); | |
debd256d | 20954 | line_ptr += bytes_read; |
ecfb656c | 20955 | dindex = (dir_index) |
debd256d JB |
20956 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
20957 | line_ptr += bytes_read; | |
20958 | mod_time = | |
20959 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20960 | line_ptr += bytes_read; | |
20961 | length = | |
20962 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20963 | line_ptr += bytes_read; | |
ecfb656c | 20964 | lh->add_file_name (cur_file, dindex, mod_time, length); |
debd256d | 20965 | } |
c906108c | 20966 | break; |
d0c6ba3d | 20967 | case DW_LNE_set_discriminator: |
6f77053d PA |
20968 | { |
20969 | /* The discriminator is not interesting to the | |
20970 | debugger; just ignore it. We still need to | |
20971 | check its value though: | |
20972 | if there are consecutive entries for the same | |
20973 | (non-prologue) line we want to coalesce them. | |
20974 | PR 17276. */ | |
20975 | unsigned int discr | |
20976 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20977 | line_ptr += bytes_read; | |
20978 | ||
20979 | state_machine.handle_set_discriminator (discr); | |
20980 | } | |
d0c6ba3d | 20981 | break; |
c906108c | 20982 | default: |
b98664d3 | 20983 | complaint (_("mangled .debug_line section")); |
debd256d | 20984 | return; |
c906108c | 20985 | } |
a8c50c1f DJ |
20986 | /* Make sure that we parsed the extended op correctly. If e.g. |
20987 | we expected a different address size than the producer used, | |
20988 | we may have read the wrong number of bytes. */ | |
20989 | if (line_ptr != extended_end) | |
20990 | { | |
b98664d3 | 20991 | complaint (_("mangled .debug_line section")); |
a8c50c1f DJ |
20992 | return; |
20993 | } | |
c906108c SS |
20994 | break; |
20995 | case DW_LNS_copy: | |
6f77053d | 20996 | state_machine.handle_copy (); |
c906108c SS |
20997 | break; |
20998 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
20999 | { |
21000 | CORE_ADDR adjust | |
21001 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
2dc7f7b3 | 21002 | line_ptr += bytes_read; |
6f77053d PA |
21003 | |
21004 | state_machine.handle_advance_pc (adjust); | |
2dc7f7b3 | 21005 | } |
c906108c SS |
21006 | break; |
21007 | case DW_LNS_advance_line: | |
a05a36a5 DE |
21008 | { |
21009 | int line_delta | |
21010 | = read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
a05a36a5 | 21011 | line_ptr += bytes_read; |
6f77053d PA |
21012 | |
21013 | state_machine.handle_advance_line (line_delta); | |
a05a36a5 | 21014 | } |
c906108c SS |
21015 | break; |
21016 | case DW_LNS_set_file: | |
d9b3de22 | 21017 | { |
6f77053d | 21018 | file_name_index file |
ecfb656c PA |
21019 | = (file_name_index) read_unsigned_leb128 (abfd, line_ptr, |
21020 | &bytes_read); | |
d9b3de22 | 21021 | line_ptr += bytes_read; |
8c43009f | 21022 | |
6f77053d | 21023 | state_machine.handle_set_file (file); |
d9b3de22 | 21024 | } |
c906108c SS |
21025 | break; |
21026 | case DW_LNS_set_column: | |
0ad93d4f | 21027 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
c906108c SS |
21028 | line_ptr += bytes_read; |
21029 | break; | |
21030 | case DW_LNS_negate_stmt: | |
6f77053d | 21031 | state_machine.handle_negate_stmt (); |
c906108c SS |
21032 | break; |
21033 | case DW_LNS_set_basic_block: | |
c906108c | 21034 | break; |
c2c6d25f JM |
21035 | /* Add to the address register of the state machine the |
21036 | address increment value corresponding to special opcode | |
a738430d MK |
21037 | 255. I.e., this value is scaled by the minimum |
21038 | instruction length since special opcode 255 would have | |
b021a221 | 21039 | scaled the increment. */ |
c906108c | 21040 | case DW_LNS_const_add_pc: |
6f77053d | 21041 | state_machine.handle_const_add_pc (); |
c906108c SS |
21042 | break; |
21043 | case DW_LNS_fixed_advance_pc: | |
3e29f34a | 21044 | { |
6f77053d | 21045 | CORE_ADDR addr_adj = read_2_bytes (abfd, line_ptr); |
3e29f34a | 21046 | line_ptr += 2; |
6f77053d PA |
21047 | |
21048 | state_machine.handle_fixed_advance_pc (addr_adj); | |
3e29f34a | 21049 | } |
c906108c | 21050 | break; |
9aa1fe7e | 21051 | default: |
a738430d MK |
21052 | { |
21053 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 21054 | int i; |
a738430d | 21055 | |
debd256d | 21056 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
21057 | { |
21058 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21059 | line_ptr += bytes_read; | |
21060 | } | |
21061 | } | |
c906108c SS |
21062 | } |
21063 | } | |
d9b3de22 DE |
21064 | |
21065 | if (!end_sequence) | |
21066 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
21067 | ||
21068 | /* We got a DW_LNE_end_sequence (or we ran off the end of the buffer, | |
21069 | in which case we still finish recording the last line). */ | |
6f77053d | 21070 | state_machine.record_line (true); |
c906108c | 21071 | } |
f3f5162e DE |
21072 | } |
21073 | ||
21074 | /* Decode the Line Number Program (LNP) for the given line_header | |
21075 | structure and CU. The actual information extracted and the type | |
21076 | of structures created from the LNP depends on the value of PST. | |
21077 | ||
21078 | 1. If PST is NULL, then this procedure uses the data from the program | |
21079 | to create all necessary symbol tables, and their linetables. | |
21080 | ||
21081 | 2. If PST is not NULL, this procedure reads the program to determine | |
21082 | the list of files included by the unit represented by PST, and | |
21083 | builds all the associated partial symbol tables. | |
21084 | ||
21085 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
21086 | It is used for relative paths in the line table. | |
21087 | NOTE: When processing partial symtabs (pst != NULL), | |
21088 | comp_dir == pst->dirname. | |
21089 | ||
21090 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
21091 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
21092 | symtab we don't use it in the name of the psymtabs we create. | |
21093 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
c3b7b696 YQ |
21094 | A good testcase for this is mb-inline.exp. |
21095 | ||
527f3840 JK |
21096 | LOWPC is the lowest address in CU (or 0 if not known). |
21097 | ||
21098 | Boolean DECODE_MAPPING specifies we need to fully decode .debug_line | |
21099 | for its PC<->lines mapping information. Otherwise only the filename | |
21100 | table is read in. */ | |
f3f5162e DE |
21101 | |
21102 | static void | |
21103 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
c3b7b696 | 21104 | struct dwarf2_cu *cu, struct partial_symtab *pst, |
527f3840 | 21105 | CORE_ADDR lowpc, int decode_mapping) |
f3f5162e | 21106 | { |
518817b3 | 21107 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
f3f5162e | 21108 | const int decode_for_pst_p = (pst != NULL); |
f3f5162e | 21109 | |
527f3840 JK |
21110 | if (decode_mapping) |
21111 | dwarf_decode_lines_1 (lh, cu, decode_for_pst_p, lowpc); | |
aaa75496 JB |
21112 | |
21113 | if (decode_for_pst_p) | |
21114 | { | |
21115 | int file_index; | |
21116 | ||
21117 | /* Now that we're done scanning the Line Header Program, we can | |
21118 | create the psymtab of each included file. */ | |
fff8551c | 21119 | for (file_index = 0; file_index < lh->file_names.size (); file_index++) |
aaa75496 JB |
21120 | if (lh->file_names[file_index].included_p == 1) |
21121 | { | |
c89b44cd | 21122 | gdb::unique_xmalloc_ptr<char> name_holder; |
d521ce57 | 21123 | const char *include_name = |
c89b44cd TT |
21124 | psymtab_include_file_name (lh, file_index, pst, comp_dir, |
21125 | &name_holder); | |
c6da4cef | 21126 | if (include_name != NULL) |
aaa75496 JB |
21127 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
21128 | } | |
21129 | } | |
cb1df416 DJ |
21130 | else |
21131 | { | |
21132 | /* Make sure a symtab is created for every file, even files | |
21133 | which contain only variables (i.e. no code with associated | |
21134 | line numbers). */ | |
804d2729 | 21135 | struct compunit_symtab *cust = cu->builder->get_compunit_symtab (); |
cb1df416 | 21136 | int i; |
cb1df416 | 21137 | |
fff8551c | 21138 | for (i = 0; i < lh->file_names.size (); i++) |
cb1df416 | 21139 | { |
8c43009f | 21140 | file_entry &fe = lh->file_names[i]; |
9a619af0 | 21141 | |
804d2729 | 21142 | dwarf2_start_subfile (cu, fe.name, fe.include_dir (lh)); |
cb1df416 | 21143 | |
804d2729 | 21144 | if (cu->builder->get_current_subfile ()->symtab == NULL) |
43f3e411 | 21145 | { |
804d2729 TT |
21146 | cu->builder->get_current_subfile ()->symtab |
21147 | = allocate_symtab (cust, | |
21148 | cu->builder->get_current_subfile ()->name); | |
43f3e411 | 21149 | } |
804d2729 | 21150 | fe.symtab = cu->builder->get_current_subfile ()->symtab; |
cb1df416 DJ |
21151 | } |
21152 | } | |
c906108c SS |
21153 | } |
21154 | ||
21155 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
21156 | DIRNAME the name of the source directory which contains FILENAME | |
4d663531 | 21157 | or NULL if not known. |
c906108c SS |
21158 | This routine tries to keep line numbers from identical absolute and |
21159 | relative file names in a common subfile. | |
21160 | ||
21161 | Using the `list' example from the GDB testsuite, which resides in | |
21162 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
21163 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
21164 | ||
c5aa993b | 21165 | DW_AT_name: /srcdir/list0.c |
4d663531 | 21166 | DW_AT_comp_dir: /compdir |
357e46e7 | 21167 | files.files[0].name: list0.h |
c5aa993b | 21168 | files.files[0].dir: /srcdir |
357e46e7 | 21169 | files.files[1].name: list0.c |
c5aa993b | 21170 | files.files[1].dir: /srcdir |
c906108c SS |
21171 | |
21172 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
21173 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
21174 | start_subfile will ensure that this happens provided that we pass the | |
21175 | concatenation of files.files[1].dir and files.files[1].name as the | |
21176 | subfile's name. */ | |
c906108c SS |
21177 | |
21178 | static void | |
804d2729 TT |
21179 | dwarf2_start_subfile (struct dwarf2_cu *cu, const char *filename, |
21180 | const char *dirname) | |
c906108c | 21181 | { |
d521ce57 | 21182 | char *copy = NULL; |
4f1520fb | 21183 | |
4d663531 | 21184 | /* In order not to lose the line information directory, |
4f1520fb FR |
21185 | we concatenate it to the filename when it makes sense. |
21186 | Note that the Dwarf3 standard says (speaking of filenames in line | |
21187 | information): ``The directory index is ignored for file names | |
21188 | that represent full path names''. Thus ignoring dirname in the | |
21189 | `else' branch below isn't an issue. */ | |
c906108c | 21190 | |
d5166ae1 | 21191 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
d521ce57 TT |
21192 | { |
21193 | copy = concat (dirname, SLASH_STRING, filename, (char *)NULL); | |
21194 | filename = copy; | |
21195 | } | |
c906108c | 21196 | |
804d2729 | 21197 | cu->builder->start_subfile (filename); |
4f1520fb | 21198 | |
d521ce57 TT |
21199 | if (copy != NULL) |
21200 | xfree (copy); | |
c906108c SS |
21201 | } |
21202 | ||
804d2729 TT |
21203 | /* Start a symtab for DWARF. NAME, COMP_DIR, LOW_PC are passed to the |
21204 | buildsym_compunit constructor. */ | |
f4dc4d17 | 21205 | |
43f3e411 | 21206 | static struct compunit_symtab * |
f4dc4d17 | 21207 | dwarf2_start_symtab (struct dwarf2_cu *cu, |
15d034d0 | 21208 | const char *name, const char *comp_dir, CORE_ADDR low_pc) |
f4dc4d17 | 21209 | { |
804d2729 | 21210 | gdb_assert (cu->builder == nullptr); |
43f3e411 | 21211 | |
804d2729 TT |
21212 | cu->builder.reset (new struct buildsym_compunit |
21213 | (cu->per_cu->dwarf2_per_objfile->objfile, | |
21214 | name, comp_dir, cu->language, low_pc)); | |
93b8bea4 | 21215 | |
804d2729 TT |
21216 | cu->list_in_scope = cu->builder->get_file_symbols (); |
21217 | ||
21218 | cu->builder->record_debugformat ("DWARF 2"); | |
21219 | cu->builder->record_producer (cu->producer); | |
f4dc4d17 | 21220 | |
4d4ec4e5 | 21221 | cu->processing_has_namespace_info = 0; |
43f3e411 | 21222 | |
804d2729 | 21223 | return cu->builder->get_compunit_symtab (); |
f4dc4d17 DE |
21224 | } |
21225 | ||
4c2df51b DJ |
21226 | static void |
21227 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 21228 | struct dwarf2_cu *cu) |
4c2df51b | 21229 | { |
518817b3 | 21230 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e7c27a73 DJ |
21231 | struct comp_unit_head *cu_header = &cu->header; |
21232 | ||
4c2df51b DJ |
21233 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
21234 | code here to turn a symbol with DW_AT_external and a | |
21235 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
21236 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
21237 | with some versions of binutils) where shared libraries could have | |
21238 | relocations against symbols in their debug information - the | |
21239 | minimal symbol would have the right address, but the debug info | |
21240 | would not. It's no longer necessary, because we will explicitly | |
21241 | apply relocations when we read in the debug information now. */ | |
21242 | ||
21243 | /* A DW_AT_location attribute with no contents indicates that a | |
21244 | variable has been optimized away. */ | |
21245 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
21246 | { | |
f1e6e072 | 21247 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
4c2df51b DJ |
21248 | return; |
21249 | } | |
21250 | ||
21251 | /* Handle one degenerate form of location expression specially, to | |
21252 | preserve GDB's previous behavior when section offsets are | |
3019eac3 DE |
21253 | specified. If this is just a DW_OP_addr or DW_OP_GNU_addr_index |
21254 | then mark this symbol as LOC_STATIC. */ | |
4c2df51b DJ |
21255 | |
21256 | if (attr_form_is_block (attr) | |
3019eac3 DE |
21257 | && ((DW_BLOCK (attr)->data[0] == DW_OP_addr |
21258 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size) | |
21259 | || (DW_BLOCK (attr)->data[0] == DW_OP_GNU_addr_index | |
21260 | && (DW_BLOCK (attr)->size | |
21261 | == 1 + leb128_size (&DW_BLOCK (attr)->data[1]))))) | |
4c2df51b | 21262 | { |
891d2f0b | 21263 | unsigned int dummy; |
4c2df51b | 21264 | |
3019eac3 DE |
21265 | if (DW_BLOCK (attr)->data[0] == DW_OP_addr) |
21266 | SYMBOL_VALUE_ADDRESS (sym) = | |
21267 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); | |
21268 | else | |
21269 | SYMBOL_VALUE_ADDRESS (sym) = | |
21270 | read_addr_index_from_leb128 (cu, DW_BLOCK (attr)->data + 1, &dummy); | |
f1e6e072 | 21271 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
4c2df51b DJ |
21272 | fixup_symbol_section (sym, objfile); |
21273 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
21274 | SYMBOL_SECTION (sym)); | |
4c2df51b DJ |
21275 | return; |
21276 | } | |
21277 | ||
21278 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
21279 | expression evaluator, and use LOC_COMPUTED only when necessary | |
21280 | (i.e. when the value of a register or memory location is | |
21281 | referenced, or a thread-local block, etc.). Then again, it might | |
21282 | not be worthwhile. I'm assuming that it isn't unless performance | |
21283 | or memory numbers show me otherwise. */ | |
21284 | ||
f1e6e072 | 21285 | dwarf2_symbol_mark_computed (attr, sym, cu, 0); |
8be455d7 | 21286 | |
f1e6e072 | 21287 | if (SYMBOL_COMPUTED_OPS (sym)->location_has_loclist) |
8be455d7 | 21288 | cu->has_loclist = 1; |
4c2df51b DJ |
21289 | } |
21290 | ||
c906108c SS |
21291 | /* Given a pointer to a DWARF information entry, figure out if we need |
21292 | to make a symbol table entry for it, and if so, create a new entry | |
21293 | and return a pointer to it. | |
21294 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
21295 | used the passed type. |
21296 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
21297 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
21298 | |
21299 | static struct symbol * | |
5e2db402 TT |
21300 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
21301 | struct symbol *space) | |
c906108c | 21302 | { |
518817b3 SM |
21303 | struct dwarf2_per_objfile *dwarf2_per_objfile |
21304 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 21305 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 21306 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 21307 | struct symbol *sym = NULL; |
15d034d0 | 21308 | const char *name; |
c906108c SS |
21309 | struct attribute *attr = NULL; |
21310 | struct attribute *attr2 = NULL; | |
e142c38c | 21311 | CORE_ADDR baseaddr; |
e37fd15a SW |
21312 | struct pending **list_to_add = NULL; |
21313 | ||
edb3359d | 21314 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c DJ |
21315 | |
21316 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 21317 | |
94af9270 | 21318 | name = dwarf2_name (die, cu); |
c906108c SS |
21319 | if (name) |
21320 | { | |
94af9270 | 21321 | const char *linkagename; |
34eaf542 | 21322 | int suppress_add = 0; |
94af9270 | 21323 | |
34eaf542 TT |
21324 | if (space) |
21325 | sym = space; | |
21326 | else | |
e623cf5d | 21327 | sym = allocate_symbol (objfile); |
c906108c | 21328 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
21329 | |
21330 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
f85f34ed | 21331 | SYMBOL_SET_LANGUAGE (sym, cu->language, &objfile->objfile_obstack); |
94af9270 KS |
21332 | linkagename = dwarf2_physname (name, die, cu); |
21333 | SYMBOL_SET_NAMES (sym, linkagename, strlen (linkagename), 0, objfile); | |
c906108c | 21334 | |
f55ee35c JK |
21335 | /* Fortran does not have mangling standard and the mangling does differ |
21336 | between gfortran, iFort etc. */ | |
21337 | if (cu->language == language_fortran | |
b250c185 | 21338 | && symbol_get_demangled_name (&(sym->ginfo)) == NULL) |
29df156d | 21339 | symbol_set_demangled_name (&(sym->ginfo), |
cfc594ee | 21340 | dwarf2_full_name (name, die, cu), |
29df156d | 21341 | NULL); |
f55ee35c | 21342 | |
c906108c | 21343 | /* Default assumptions. |
c5aa993b | 21344 | Use the passed type or decode it from the die. */ |
176620f1 | 21345 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 21346 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
21347 | if (type != NULL) |
21348 | SYMBOL_TYPE (sym) = type; | |
21349 | else | |
e7c27a73 | 21350 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
21351 | attr = dwarf2_attr (die, |
21352 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
21353 | cu); | |
c906108c SS |
21354 | if (attr) |
21355 | { | |
21356 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
21357 | } | |
cb1df416 | 21358 | |
edb3359d DJ |
21359 | attr = dwarf2_attr (die, |
21360 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
21361 | cu); | |
cb1df416 DJ |
21362 | if (attr) |
21363 | { | |
ecfb656c | 21364 | file_name_index file_index = (file_name_index) DW_UNSND (attr); |
8c43009f | 21365 | struct file_entry *fe; |
9a619af0 | 21366 | |
ecfb656c PA |
21367 | if (cu->line_header != NULL) |
21368 | fe = cu->line_header->file_name_at (file_index); | |
8c43009f PA |
21369 | else |
21370 | fe = NULL; | |
21371 | ||
21372 | if (fe == NULL) | |
b98664d3 | 21373 | complaint (_("file index out of range")); |
8c43009f PA |
21374 | else |
21375 | symbol_set_symtab (sym, fe->symtab); | |
cb1df416 DJ |
21376 | } |
21377 | ||
c906108c SS |
21378 | switch (die->tag) |
21379 | { | |
21380 | case DW_TAG_label: | |
e142c38c | 21381 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c | 21382 | if (attr) |
3e29f34a MR |
21383 | { |
21384 | CORE_ADDR addr; | |
21385 | ||
21386 | addr = attr_value_as_address (attr); | |
21387 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr + baseaddr); | |
21388 | SYMBOL_VALUE_ADDRESS (sym) = addr; | |
21389 | } | |
0f5238ed TT |
21390 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
21391 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
f1e6e072 | 21392 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
380618d6 | 21393 | dw2_add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
21394 | break; |
21395 | case DW_TAG_subprogram: | |
21396 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
21397 | finish_block. */ | |
f1e6e072 | 21398 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
e142c38c | 21399 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d JB |
21400 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
21401 | || cu->language == language_ada) | |
c906108c | 21402 | { |
2cfa0c8d JB |
21403 | /* Subprograms marked external are stored as a global symbol. |
21404 | Ada subprograms, whether marked external or not, are always | |
21405 | stored as a global symbol, because we want to be able to | |
21406 | access them globally. For instance, we want to be able | |
21407 | to break on a nested subprogram without having to | |
21408 | specify the context. */ | |
804d2729 | 21409 | list_to_add = cu->builder->get_global_symbols (); |
c906108c SS |
21410 | } |
21411 | else | |
21412 | { | |
e37fd15a | 21413 | list_to_add = cu->list_in_scope; |
c906108c SS |
21414 | } |
21415 | break; | |
edb3359d DJ |
21416 | case DW_TAG_inlined_subroutine: |
21417 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
21418 | finish_block. */ | |
f1e6e072 | 21419 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
edb3359d | 21420 | SYMBOL_INLINED (sym) = 1; |
481860b3 | 21421 | list_to_add = cu->list_in_scope; |
edb3359d | 21422 | break; |
34eaf542 TT |
21423 | case DW_TAG_template_value_param: |
21424 | suppress_add = 1; | |
21425 | /* Fall through. */ | |
72929c62 | 21426 | case DW_TAG_constant: |
c906108c | 21427 | case DW_TAG_variable: |
254e6b9e | 21428 | case DW_TAG_member: |
0963b4bd MS |
21429 | /* Compilation with minimal debug info may result in |
21430 | variables with missing type entries. Change the | |
21431 | misleading `void' type to something sensible. */ | |
c906108c | 21432 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) |
46a4882b | 21433 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_int; |
64c50499 | 21434 | |
e142c38c | 21435 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
21436 | /* In the case of DW_TAG_member, we should only be called for |
21437 | static const members. */ | |
21438 | if (die->tag == DW_TAG_member) | |
21439 | { | |
3863f96c DE |
21440 | /* dwarf2_add_field uses die_is_declaration, |
21441 | so we do the same. */ | |
254e6b9e DE |
21442 | gdb_assert (die_is_declaration (die, cu)); |
21443 | gdb_assert (attr); | |
21444 | } | |
c906108c SS |
21445 | if (attr) |
21446 | { | |
e7c27a73 | 21447 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 21448 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 21449 | if (!suppress_add) |
34eaf542 TT |
21450 | { |
21451 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
804d2729 | 21452 | list_to_add = cu->builder->get_global_symbols (); |
34eaf542 | 21453 | else |
e37fd15a | 21454 | list_to_add = cu->list_in_scope; |
34eaf542 | 21455 | } |
c906108c SS |
21456 | break; |
21457 | } | |
e142c38c | 21458 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
21459 | if (attr) |
21460 | { | |
e7c27a73 | 21461 | var_decode_location (attr, sym, cu); |
e142c38c | 21462 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
21463 | |
21464 | /* Fortran explicitly imports any global symbols to the local | |
21465 | scope by DW_TAG_common_block. */ | |
21466 | if (cu->language == language_fortran && die->parent | |
21467 | && die->parent->tag == DW_TAG_common_block) | |
21468 | attr2 = NULL; | |
21469 | ||
caac4577 JG |
21470 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
21471 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
21472 | && !dwarf2_per_objfile->has_section_at_zero) | |
21473 | { | |
21474 | /* When a static variable is eliminated by the linker, | |
21475 | the corresponding debug information is not stripped | |
21476 | out, but the variable address is set to null; | |
21477 | do not add such variables into symbol table. */ | |
21478 | } | |
21479 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 21480 | { |
f55ee35c JK |
21481 | /* Workaround gfortran PR debug/40040 - it uses |
21482 | DW_AT_location for variables in -fPIC libraries which may | |
21483 | get overriden by other libraries/executable and get | |
21484 | a different address. Resolve it by the minimal symbol | |
21485 | which may come from inferior's executable using copy | |
21486 | relocation. Make this workaround only for gfortran as for | |
21487 | other compilers GDB cannot guess the minimal symbol | |
21488 | Fortran mangling kind. */ | |
21489 | if (cu->language == language_fortran && die->parent | |
21490 | && die->parent->tag == DW_TAG_module | |
21491 | && cu->producer | |
28586665 | 21492 | && startswith (cu->producer, "GNU Fortran")) |
f1e6e072 | 21493 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
f55ee35c | 21494 | |
1c809c68 TT |
21495 | /* A variable with DW_AT_external is never static, |
21496 | but it may be block-scoped. */ | |
804d2729 TT |
21497 | list_to_add |
21498 | = (cu->list_in_scope == cu->builder->get_file_symbols () | |
21499 | ? cu->builder->get_global_symbols () | |
21500 | : cu->list_in_scope); | |
1c809c68 | 21501 | } |
c906108c | 21502 | else |
e37fd15a | 21503 | list_to_add = cu->list_in_scope; |
c906108c SS |
21504 | } |
21505 | else | |
21506 | { | |
21507 | /* We do not know the address of this symbol. | |
c5aa993b JM |
21508 | If it is an external symbol and we have type information |
21509 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
21510 | The address of the variable will then be determined from | |
21511 | the minimal symbol table whenever the variable is | |
21512 | referenced. */ | |
e142c38c | 21513 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
21514 | |
21515 | /* Fortran explicitly imports any global symbols to the local | |
21516 | scope by DW_TAG_common_block. */ | |
21517 | if (cu->language == language_fortran && die->parent | |
21518 | && die->parent->tag == DW_TAG_common_block) | |
21519 | { | |
21520 | /* SYMBOL_CLASS doesn't matter here because | |
21521 | read_common_block is going to reset it. */ | |
21522 | if (!suppress_add) | |
21523 | list_to_add = cu->list_in_scope; | |
21524 | } | |
21525 | else if (attr2 && (DW_UNSND (attr2) != 0) | |
21526 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) | |
c906108c | 21527 | { |
0fe7935b DJ |
21528 | /* A variable with DW_AT_external is never static, but it |
21529 | may be block-scoped. */ | |
804d2729 TT |
21530 | list_to_add |
21531 | = (cu->list_in_scope == cu->builder->get_file_symbols () | |
21532 | ? cu->builder->get_global_symbols () | |
21533 | : cu->list_in_scope); | |
0fe7935b | 21534 | |
f1e6e072 | 21535 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
c906108c | 21536 | } |
442ddf59 JK |
21537 | else if (!die_is_declaration (die, cu)) |
21538 | { | |
21539 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
21540 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
21541 | if (!suppress_add) |
21542 | list_to_add = cu->list_in_scope; | |
442ddf59 | 21543 | } |
c906108c SS |
21544 | } |
21545 | break; | |
21546 | case DW_TAG_formal_parameter: | |
a60f3166 TT |
21547 | { |
21548 | /* If we are inside a function, mark this as an argument. If | |
21549 | not, we might be looking at an argument to an inlined function | |
21550 | when we do not have enough information to show inlined frames; | |
21551 | pretend it's a local variable in that case so that the user can | |
21552 | still see it. */ | |
804d2729 TT |
21553 | struct context_stack *curr |
21554 | = cu->builder->get_current_context_stack (); | |
a60f3166 TT |
21555 | if (curr != nullptr && curr->name != nullptr) |
21556 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
21557 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
21558 | if (attr) | |
21559 | { | |
21560 | var_decode_location (attr, sym, cu); | |
21561 | } | |
21562 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
21563 | if (attr) | |
21564 | { | |
21565 | dwarf2_const_value (attr, sym, cu); | |
21566 | } | |
f346a30d | 21567 | |
a60f3166 TT |
21568 | list_to_add = cu->list_in_scope; |
21569 | } | |
c906108c SS |
21570 | break; |
21571 | case DW_TAG_unspecified_parameters: | |
21572 | /* From varargs functions; gdb doesn't seem to have any | |
21573 | interest in this information, so just ignore it for now. | |
21574 | (FIXME?) */ | |
21575 | break; | |
34eaf542 TT |
21576 | case DW_TAG_template_type_param: |
21577 | suppress_add = 1; | |
21578 | /* Fall through. */ | |
c906108c | 21579 | case DW_TAG_class_type: |
680b30c7 | 21580 | case DW_TAG_interface_type: |
c906108c SS |
21581 | case DW_TAG_structure_type: |
21582 | case DW_TAG_union_type: | |
72019c9c | 21583 | case DW_TAG_set_type: |
c906108c | 21584 | case DW_TAG_enumeration_type: |
f1e6e072 | 21585 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 21586 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 21587 | |
63d06c5c | 21588 | { |
9c37b5ae | 21589 | /* NOTE: carlton/2003-11-10: C++ class symbols shouldn't |
63d06c5c DC |
21590 | really ever be static objects: otherwise, if you try |
21591 | to, say, break of a class's method and you're in a file | |
21592 | which doesn't mention that class, it won't work unless | |
21593 | the check for all static symbols in lookup_symbol_aux | |
21594 | saves you. See the OtherFileClass tests in | |
21595 | gdb.c++/namespace.exp. */ | |
21596 | ||
e37fd15a | 21597 | if (!suppress_add) |
34eaf542 | 21598 | { |
804d2729 TT |
21599 | list_to_add |
21600 | = (cu->list_in_scope == cu->builder->get_file_symbols () | |
21601 | && cu->language == language_cplus | |
21602 | ? cu->builder->get_global_symbols () | |
21603 | : cu->list_in_scope); | |
63d06c5c | 21604 | |
64382290 | 21605 | /* The semantics of C++ state that "struct foo { |
9c37b5ae | 21606 | ... }" also defines a typedef for "foo". */ |
64382290 | 21607 | if (cu->language == language_cplus |
45280282 | 21608 | || cu->language == language_ada |
c44af4eb TT |
21609 | || cu->language == language_d |
21610 | || cu->language == language_rust) | |
64382290 TT |
21611 | { |
21612 | /* The symbol's name is already allocated along | |
21613 | with this objfile, so we don't need to | |
21614 | duplicate it for the type. */ | |
21615 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
21616 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_SEARCH_NAME (sym); | |
21617 | } | |
63d06c5c DC |
21618 | } |
21619 | } | |
c906108c SS |
21620 | break; |
21621 | case DW_TAG_typedef: | |
f1e6e072 | 21622 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
63d06c5c | 21623 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 21624 | list_to_add = cu->list_in_scope; |
63d06c5c | 21625 | break; |
c906108c | 21626 | case DW_TAG_base_type: |
a02abb62 | 21627 | case DW_TAG_subrange_type: |
f1e6e072 | 21628 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 21629 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 21630 | list_to_add = cu->list_in_scope; |
c906108c SS |
21631 | break; |
21632 | case DW_TAG_enumerator: | |
e142c38c | 21633 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
21634 | if (attr) |
21635 | { | |
e7c27a73 | 21636 | dwarf2_const_value (attr, sym, cu); |
c906108c | 21637 | } |
63d06c5c DC |
21638 | { |
21639 | /* NOTE: carlton/2003-11-10: See comment above in the | |
21640 | DW_TAG_class_type, etc. block. */ | |
21641 | ||
804d2729 TT |
21642 | list_to_add |
21643 | = (cu->list_in_scope == cu->builder->get_file_symbols () | |
21644 | && cu->language == language_cplus | |
21645 | ? cu->builder->get_global_symbols () | |
21646 | : cu->list_in_scope); | |
63d06c5c | 21647 | } |
c906108c | 21648 | break; |
74921315 | 21649 | case DW_TAG_imported_declaration: |
5c4e30ca | 21650 | case DW_TAG_namespace: |
f1e6e072 | 21651 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
804d2729 | 21652 | list_to_add = cu->builder->get_global_symbols (); |
5c4e30ca | 21653 | break; |
530e8392 KB |
21654 | case DW_TAG_module: |
21655 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; | |
21656 | SYMBOL_DOMAIN (sym) = MODULE_DOMAIN; | |
804d2729 | 21657 | list_to_add = cu->builder->get_global_symbols (); |
530e8392 | 21658 | break; |
4357ac6c | 21659 | case DW_TAG_common_block: |
f1e6e072 | 21660 | SYMBOL_ACLASS_INDEX (sym) = LOC_COMMON_BLOCK; |
4357ac6c | 21661 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; |
380618d6 | 21662 | dw2_add_symbol_to_list (sym, cu->list_in_scope); |
4357ac6c | 21663 | break; |
c906108c SS |
21664 | default: |
21665 | /* Not a tag we recognize. Hopefully we aren't processing | |
21666 | trash data, but since we must specifically ignore things | |
21667 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 21668 | this point. */ |
b98664d3 | 21669 | complaint (_("unsupported tag: '%s'"), |
4d3c2250 | 21670 | dwarf_tag_name (die->tag)); |
c906108c SS |
21671 | break; |
21672 | } | |
df8a16a1 | 21673 | |
e37fd15a SW |
21674 | if (suppress_add) |
21675 | { | |
21676 | sym->hash_next = objfile->template_symbols; | |
21677 | objfile->template_symbols = sym; | |
21678 | list_to_add = NULL; | |
21679 | } | |
21680 | ||
21681 | if (list_to_add != NULL) | |
380618d6 | 21682 | dw2_add_symbol_to_list (sym, list_to_add); |
e37fd15a | 21683 | |
df8a16a1 DJ |
21684 | /* For the benefit of old versions of GCC, check for anonymous |
21685 | namespaces based on the demangled name. */ | |
4d4ec4e5 | 21686 | if (!cu->processing_has_namespace_info |
94af9270 | 21687 | && cu->language == language_cplus) |
804d2729 | 21688 | cp_scan_for_anonymous_namespaces (cu->builder.get (), sym, objfile); |
c906108c SS |
21689 | } |
21690 | return (sym); | |
21691 | } | |
21692 | ||
98bfdba5 PA |
21693 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
21694 | zero-extend it as appropriate for the symbol's type. The DWARF | |
21695 | standard (v4) is not entirely clear about the meaning of using | |
21696 | DW_FORM_dataN for a constant with a signed type, where the type is | |
21697 | wider than the data. The conclusion of a discussion on the DWARF | |
21698 | list was that this is unspecified. We choose to always zero-extend | |
21699 | because that is the interpretation long in use by GCC. */ | |
c906108c | 21700 | |
98bfdba5 | 21701 | static gdb_byte * |
ff39bb5e | 21702 | dwarf2_const_value_data (const struct attribute *attr, struct obstack *obstack, |
12df843f | 21703 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 21704 | { |
518817b3 | 21705 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e17a4113 UW |
21706 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
21707 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
21708 | LONGEST l = DW_UNSND (attr); |
21709 | ||
21710 | if (bits < sizeof (*value) * 8) | |
21711 | { | |
21712 | l &= ((LONGEST) 1 << bits) - 1; | |
21713 | *value = l; | |
21714 | } | |
21715 | else if (bits == sizeof (*value) * 8) | |
21716 | *value = l; | |
21717 | else | |
21718 | { | |
224c3ddb | 21719 | gdb_byte *bytes = (gdb_byte *) obstack_alloc (obstack, bits / 8); |
98bfdba5 PA |
21720 | store_unsigned_integer (bytes, bits / 8, byte_order, l); |
21721 | return bytes; | |
21722 | } | |
21723 | ||
21724 | return NULL; | |
21725 | } | |
21726 | ||
21727 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
21728 | the value does not fit in *VALUE, set *BYTES - either already | |
21729 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
21730 | or, set *BATON, if we translated the constant to a location | |
21731 | expression. */ | |
21732 | ||
21733 | static void | |
ff39bb5e | 21734 | dwarf2_const_value_attr (const struct attribute *attr, struct type *type, |
98bfdba5 PA |
21735 | const char *name, struct obstack *obstack, |
21736 | struct dwarf2_cu *cu, | |
d521ce57 | 21737 | LONGEST *value, const gdb_byte **bytes, |
98bfdba5 PA |
21738 | struct dwarf2_locexpr_baton **baton) |
21739 | { | |
518817b3 | 21740 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
98bfdba5 | 21741 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 21742 | struct dwarf_block *blk; |
98bfdba5 PA |
21743 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
21744 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
21745 | ||
21746 | *value = 0; | |
21747 | *bytes = NULL; | |
21748 | *baton = NULL; | |
c906108c SS |
21749 | |
21750 | switch (attr->form) | |
21751 | { | |
21752 | case DW_FORM_addr: | |
3019eac3 | 21753 | case DW_FORM_GNU_addr_index: |
ac56253d | 21754 | { |
ac56253d TT |
21755 | gdb_byte *data; |
21756 | ||
98bfdba5 PA |
21757 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
21758 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 21759 | cu_header->addr_size, |
98bfdba5 | 21760 | TYPE_LENGTH (type)); |
ac56253d TT |
21761 | /* Symbols of this form are reasonably rare, so we just |
21762 | piggyback on the existing location code rather than writing | |
21763 | a new implementation of symbol_computed_ops. */ | |
8d749320 | 21764 | *baton = XOBNEW (obstack, struct dwarf2_locexpr_baton); |
98bfdba5 PA |
21765 | (*baton)->per_cu = cu->per_cu; |
21766 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 21767 | |
98bfdba5 | 21768 | (*baton)->size = 2 + cu_header->addr_size; |
224c3ddb | 21769 | data = (gdb_byte *) obstack_alloc (obstack, (*baton)->size); |
98bfdba5 | 21770 | (*baton)->data = data; |
ac56253d TT |
21771 | |
21772 | data[0] = DW_OP_addr; | |
21773 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
21774 | byte_order, DW_ADDR (attr)); | |
21775 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 21776 | } |
c906108c | 21777 | break; |
4ac36638 | 21778 | case DW_FORM_string: |
93b5768b | 21779 | case DW_FORM_strp: |
3019eac3 | 21780 | case DW_FORM_GNU_str_index: |
36586728 | 21781 | case DW_FORM_GNU_strp_alt: |
98bfdba5 PA |
21782 | /* DW_STRING is already allocated on the objfile obstack, point |
21783 | directly to it. */ | |
d521ce57 | 21784 | *bytes = (const gdb_byte *) DW_STRING (attr); |
93b5768b | 21785 | break; |
c906108c SS |
21786 | case DW_FORM_block1: |
21787 | case DW_FORM_block2: | |
21788 | case DW_FORM_block4: | |
21789 | case DW_FORM_block: | |
2dc7f7b3 | 21790 | case DW_FORM_exprloc: |
0224619f | 21791 | case DW_FORM_data16: |
c906108c | 21792 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
21793 | if (TYPE_LENGTH (type) != blk->size) |
21794 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
21795 | TYPE_LENGTH (type)); | |
21796 | *bytes = blk->data; | |
c906108c | 21797 | break; |
2df3850c JM |
21798 | |
21799 | /* The DW_AT_const_value attributes are supposed to carry the | |
21800 | symbol's value "represented as it would be on the target | |
21801 | architecture." By the time we get here, it's already been | |
21802 | converted to host endianness, so we just need to sign- or | |
21803 | zero-extend it as appropriate. */ | |
21804 | case DW_FORM_data1: | |
3aef2284 | 21805 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 8); |
2df3850c | 21806 | break; |
c906108c | 21807 | case DW_FORM_data2: |
3aef2284 | 21808 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 16); |
2df3850c | 21809 | break; |
c906108c | 21810 | case DW_FORM_data4: |
3aef2284 | 21811 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 32); |
2df3850c | 21812 | break; |
c906108c | 21813 | case DW_FORM_data8: |
3aef2284 | 21814 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 64); |
2df3850c JM |
21815 | break; |
21816 | ||
c906108c | 21817 | case DW_FORM_sdata: |
663c44ac | 21818 | case DW_FORM_implicit_const: |
98bfdba5 | 21819 | *value = DW_SND (attr); |
2df3850c JM |
21820 | break; |
21821 | ||
c906108c | 21822 | case DW_FORM_udata: |
98bfdba5 | 21823 | *value = DW_UNSND (attr); |
c906108c | 21824 | break; |
2df3850c | 21825 | |
c906108c | 21826 | default: |
b98664d3 | 21827 | complaint (_("unsupported const value attribute form: '%s'"), |
4d3c2250 | 21828 | dwarf_form_name (attr->form)); |
98bfdba5 | 21829 | *value = 0; |
c906108c SS |
21830 | break; |
21831 | } | |
21832 | } | |
21833 | ||
2df3850c | 21834 | |
98bfdba5 PA |
21835 | /* Copy constant value from an attribute to a symbol. */ |
21836 | ||
2df3850c | 21837 | static void |
ff39bb5e | 21838 | dwarf2_const_value (const struct attribute *attr, struct symbol *sym, |
98bfdba5 | 21839 | struct dwarf2_cu *cu) |
2df3850c | 21840 | { |
518817b3 | 21841 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
12df843f | 21842 | LONGEST value; |
d521ce57 | 21843 | const gdb_byte *bytes; |
98bfdba5 | 21844 | struct dwarf2_locexpr_baton *baton; |
2df3850c | 21845 | |
98bfdba5 PA |
21846 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
21847 | SYMBOL_PRINT_NAME (sym), | |
21848 | &objfile->objfile_obstack, cu, | |
21849 | &value, &bytes, &baton); | |
2df3850c | 21850 | |
98bfdba5 PA |
21851 | if (baton != NULL) |
21852 | { | |
98bfdba5 | 21853 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 21854 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
98bfdba5 PA |
21855 | } |
21856 | else if (bytes != NULL) | |
21857 | { | |
21858 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
f1e6e072 | 21859 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
98bfdba5 PA |
21860 | } |
21861 | else | |
21862 | { | |
21863 | SYMBOL_VALUE (sym) = value; | |
f1e6e072 | 21864 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
98bfdba5 | 21865 | } |
2df3850c JM |
21866 | } |
21867 | ||
c906108c SS |
21868 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
21869 | ||
21870 | static struct type * | |
e7c27a73 | 21871 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21872 | { |
c906108c | 21873 | struct attribute *type_attr; |
c906108c | 21874 | |
e142c38c | 21875 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
21876 | if (!type_attr) |
21877 | { | |
518817b3 | 21878 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 21879 | /* A missing DW_AT_type represents a void type. */ |
518817b3 | 21880 | return objfile_type (objfile)->builtin_void; |
c906108c | 21881 | } |
348e048f | 21882 | |
673bfd45 | 21883 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
21884 | } |
21885 | ||
b4ba55a1 JB |
21886 | /* True iff CU's producer generates GNAT Ada auxiliary information |
21887 | that allows to find parallel types through that information instead | |
21888 | of having to do expensive parallel lookups by type name. */ | |
21889 | ||
21890 | static int | |
21891 | need_gnat_info (struct dwarf2_cu *cu) | |
21892 | { | |
de4cb04a JB |
21893 | /* Assume that the Ada compiler was GNAT, which always produces |
21894 | the auxiliary information. */ | |
21895 | return (cu->language == language_ada); | |
b4ba55a1 JB |
21896 | } |
21897 | ||
b4ba55a1 JB |
21898 | /* Return the auxiliary type of the die in question using its |
21899 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
21900 | attribute is not present. */ | |
21901 | ||
21902 | static struct type * | |
21903 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
21904 | { | |
b4ba55a1 | 21905 | struct attribute *type_attr; |
b4ba55a1 JB |
21906 | |
21907 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
21908 | if (!type_attr) | |
21909 | return NULL; | |
21910 | ||
673bfd45 | 21911 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
21912 | } |
21913 | ||
21914 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
21915 | descriptive type accordingly. */ | |
21916 | ||
21917 | static void | |
21918 | set_descriptive_type (struct type *type, struct die_info *die, | |
21919 | struct dwarf2_cu *cu) | |
21920 | { | |
21921 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
21922 | ||
21923 | if (descriptive_type) | |
21924 | { | |
21925 | ALLOCATE_GNAT_AUX_TYPE (type); | |
21926 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
21927 | } | |
21928 | } | |
21929 | ||
c906108c SS |
21930 | /* Return the containing type of the die in question using its |
21931 | DW_AT_containing_type attribute. */ | |
21932 | ||
21933 | static struct type * | |
e7c27a73 | 21934 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 21935 | { |
c906108c | 21936 | struct attribute *type_attr; |
518817b3 | 21937 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 21938 | |
e142c38c | 21939 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
21940 | if (!type_attr) |
21941 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
518817b3 | 21942 | "[in module %s]"), objfile_name (objfile)); |
33ac96f0 | 21943 | |
673bfd45 | 21944 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
21945 | } |
21946 | ||
ac9ec31b DE |
21947 | /* Return an error marker type to use for the ill formed type in DIE/CU. */ |
21948 | ||
21949 | static struct type * | |
21950 | build_error_marker_type (struct dwarf2_cu *cu, struct die_info *die) | |
21951 | { | |
518817b3 SM |
21952 | struct dwarf2_per_objfile *dwarf2_per_objfile |
21953 | = cu->per_cu->dwarf2_per_objfile; | |
ac9ec31b | 21954 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
528e1572 | 21955 | char *saved; |
ac9ec31b | 21956 | |
528e1572 SM |
21957 | std::string message |
21958 | = string_printf (_("<unknown type in %s, CU %s, DIE %s>"), | |
21959 | objfile_name (objfile), | |
21960 | sect_offset_str (cu->header.sect_off), | |
21961 | sect_offset_str (die->sect_off)); | |
224c3ddb | 21962 | saved = (char *) obstack_copy0 (&objfile->objfile_obstack, |
528e1572 | 21963 | message.c_str (), message.length ()); |
ac9ec31b | 21964 | |
19f392bc | 21965 | return init_type (objfile, TYPE_CODE_ERROR, 0, saved); |
ac9ec31b DE |
21966 | } |
21967 | ||
673bfd45 | 21968 | /* Look up the type of DIE in CU using its type attribute ATTR. |
ac9ec31b DE |
21969 | ATTR must be one of: DW_AT_type, DW_AT_GNAT_descriptive_type, |
21970 | DW_AT_containing_type. | |
673bfd45 DE |
21971 | If there is no type substitute an error marker. */ |
21972 | ||
c906108c | 21973 | static struct type * |
ff39bb5e | 21974 | lookup_die_type (struct die_info *die, const struct attribute *attr, |
673bfd45 | 21975 | struct dwarf2_cu *cu) |
c906108c | 21976 | { |
518817b3 SM |
21977 | struct dwarf2_per_objfile *dwarf2_per_objfile |
21978 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 21979 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
f792889a DJ |
21980 | struct type *this_type; |
21981 | ||
ac9ec31b DE |
21982 | gdb_assert (attr->name == DW_AT_type |
21983 | || attr->name == DW_AT_GNAT_descriptive_type | |
21984 | || attr->name == DW_AT_containing_type); | |
21985 | ||
673bfd45 DE |
21986 | /* First see if we have it cached. */ |
21987 | ||
36586728 TT |
21988 | if (attr->form == DW_FORM_GNU_ref_alt) |
21989 | { | |
21990 | struct dwarf2_per_cu_data *per_cu; | |
9c541725 | 21991 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
36586728 | 21992 | |
ed2dc618 SM |
21993 | per_cu = dwarf2_find_containing_comp_unit (sect_off, 1, |
21994 | dwarf2_per_objfile); | |
9c541725 | 21995 | this_type = get_die_type_at_offset (sect_off, per_cu); |
36586728 | 21996 | } |
7771576e | 21997 | else if (attr_form_is_ref (attr)) |
673bfd45 | 21998 | { |
9c541725 | 21999 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
673bfd45 | 22000 | |
9c541725 | 22001 | this_type = get_die_type_at_offset (sect_off, cu->per_cu); |
673bfd45 | 22002 | } |
55f1336d | 22003 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 | 22004 | { |
ac9ec31b | 22005 | ULONGEST signature = DW_SIGNATURE (attr); |
673bfd45 | 22006 | |
ac9ec31b | 22007 | return get_signatured_type (die, signature, cu); |
673bfd45 DE |
22008 | } |
22009 | else | |
22010 | { | |
b98664d3 | 22011 | complaint (_("Dwarf Error: Bad type attribute %s in DIE" |
9d8780f0 SM |
22012 | " at %s [in module %s]"), |
22013 | dwarf_attr_name (attr->name), sect_offset_str (die->sect_off), | |
4262abfb | 22014 | objfile_name (objfile)); |
ac9ec31b | 22015 | return build_error_marker_type (cu, die); |
673bfd45 DE |
22016 | } |
22017 | ||
22018 | /* If not cached we need to read it in. */ | |
22019 | ||
22020 | if (this_type == NULL) | |
22021 | { | |
ac9ec31b | 22022 | struct die_info *type_die = NULL; |
673bfd45 DE |
22023 | struct dwarf2_cu *type_cu = cu; |
22024 | ||
7771576e | 22025 | if (attr_form_is_ref (attr)) |
ac9ec31b DE |
22026 | type_die = follow_die_ref (die, attr, &type_cu); |
22027 | if (type_die == NULL) | |
22028 | return build_error_marker_type (cu, die); | |
22029 | /* If we find the type now, it's probably because the type came | |
3019eac3 DE |
22030 | from an inter-CU reference and the type's CU got expanded before |
22031 | ours. */ | |
ac9ec31b | 22032 | this_type = read_type_die (type_die, type_cu); |
673bfd45 DE |
22033 | } |
22034 | ||
22035 | /* If we still don't have a type use an error marker. */ | |
22036 | ||
22037 | if (this_type == NULL) | |
ac9ec31b | 22038 | return build_error_marker_type (cu, die); |
673bfd45 | 22039 | |
f792889a | 22040 | return this_type; |
c906108c SS |
22041 | } |
22042 | ||
673bfd45 DE |
22043 | /* Return the type in DIE, CU. |
22044 | Returns NULL for invalid types. | |
22045 | ||
02142a6c | 22046 | This first does a lookup in die_type_hash, |
673bfd45 DE |
22047 | and only reads the die in if necessary. |
22048 | ||
22049 | NOTE: This can be called when reading in partial or full symbols. */ | |
22050 | ||
f792889a | 22051 | static struct type * |
e7c27a73 | 22052 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22053 | { |
f792889a DJ |
22054 | struct type *this_type; |
22055 | ||
22056 | this_type = get_die_type (die, cu); | |
22057 | if (this_type) | |
22058 | return this_type; | |
22059 | ||
673bfd45 DE |
22060 | return read_type_die_1 (die, cu); |
22061 | } | |
22062 | ||
22063 | /* Read the type in DIE, CU. | |
22064 | Returns NULL for invalid types. */ | |
22065 | ||
22066 | static struct type * | |
22067 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
22068 | { | |
22069 | struct type *this_type = NULL; | |
22070 | ||
c906108c SS |
22071 | switch (die->tag) |
22072 | { | |
22073 | case DW_TAG_class_type: | |
680b30c7 | 22074 | case DW_TAG_interface_type: |
c906108c SS |
22075 | case DW_TAG_structure_type: |
22076 | case DW_TAG_union_type: | |
f792889a | 22077 | this_type = read_structure_type (die, cu); |
c906108c SS |
22078 | break; |
22079 | case DW_TAG_enumeration_type: | |
f792889a | 22080 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
22081 | break; |
22082 | case DW_TAG_subprogram: | |
22083 | case DW_TAG_subroutine_type: | |
edb3359d | 22084 | case DW_TAG_inlined_subroutine: |
f792889a | 22085 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
22086 | break; |
22087 | case DW_TAG_array_type: | |
f792889a | 22088 | this_type = read_array_type (die, cu); |
c906108c | 22089 | break; |
72019c9c | 22090 | case DW_TAG_set_type: |
f792889a | 22091 | this_type = read_set_type (die, cu); |
72019c9c | 22092 | break; |
c906108c | 22093 | case DW_TAG_pointer_type: |
f792889a | 22094 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
22095 | break; |
22096 | case DW_TAG_ptr_to_member_type: | |
f792889a | 22097 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
22098 | break; |
22099 | case DW_TAG_reference_type: | |
4297a3f0 AV |
22100 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_REF); |
22101 | break; | |
22102 | case DW_TAG_rvalue_reference_type: | |
22103 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_RVALUE_REF); | |
c906108c SS |
22104 | break; |
22105 | case DW_TAG_const_type: | |
f792889a | 22106 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
22107 | break; |
22108 | case DW_TAG_volatile_type: | |
f792889a | 22109 | this_type = read_tag_volatile_type (die, cu); |
c906108c | 22110 | break; |
06d66ee9 TT |
22111 | case DW_TAG_restrict_type: |
22112 | this_type = read_tag_restrict_type (die, cu); | |
22113 | break; | |
c906108c | 22114 | case DW_TAG_string_type: |
f792889a | 22115 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
22116 | break; |
22117 | case DW_TAG_typedef: | |
f792889a | 22118 | this_type = read_typedef (die, cu); |
c906108c | 22119 | break; |
a02abb62 | 22120 | case DW_TAG_subrange_type: |
f792889a | 22121 | this_type = read_subrange_type (die, cu); |
a02abb62 | 22122 | break; |
c906108c | 22123 | case DW_TAG_base_type: |
f792889a | 22124 | this_type = read_base_type (die, cu); |
c906108c | 22125 | break; |
81a17f79 | 22126 | case DW_TAG_unspecified_type: |
f792889a | 22127 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 22128 | break; |
0114d602 DJ |
22129 | case DW_TAG_namespace: |
22130 | this_type = read_namespace_type (die, cu); | |
22131 | break; | |
f55ee35c JK |
22132 | case DW_TAG_module: |
22133 | this_type = read_module_type (die, cu); | |
22134 | break; | |
a2c2acaf MW |
22135 | case DW_TAG_atomic_type: |
22136 | this_type = read_tag_atomic_type (die, cu); | |
22137 | break; | |
c906108c | 22138 | default: |
b98664d3 | 22139 | complaint (_("unexpected tag in read_type_die: '%s'"), |
4d3c2250 | 22140 | dwarf_tag_name (die->tag)); |
c906108c SS |
22141 | break; |
22142 | } | |
63d06c5c | 22143 | |
f792889a | 22144 | return this_type; |
63d06c5c DC |
22145 | } |
22146 | ||
abc72ce4 DE |
22147 | /* See if we can figure out if the class lives in a namespace. We do |
22148 | this by looking for a member function; its demangled name will | |
22149 | contain namespace info, if there is any. | |
22150 | Return the computed name or NULL. | |
22151 | Space for the result is allocated on the objfile's obstack. | |
22152 | This is the full-die version of guess_partial_die_structure_name. | |
22153 | In this case we know DIE has no useful parent. */ | |
22154 | ||
22155 | static char * | |
22156 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) | |
22157 | { | |
22158 | struct die_info *spec_die; | |
22159 | struct dwarf2_cu *spec_cu; | |
22160 | struct die_info *child; | |
518817b3 | 22161 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
abc72ce4 DE |
22162 | |
22163 | spec_cu = cu; | |
22164 | spec_die = die_specification (die, &spec_cu); | |
22165 | if (spec_die != NULL) | |
22166 | { | |
22167 | die = spec_die; | |
22168 | cu = spec_cu; | |
22169 | } | |
22170 | ||
22171 | for (child = die->child; | |
22172 | child != NULL; | |
22173 | child = child->sibling) | |
22174 | { | |
22175 | if (child->tag == DW_TAG_subprogram) | |
22176 | { | |
73b9be8b | 22177 | const char *linkage_name = dw2_linkage_name (child, cu); |
abc72ce4 | 22178 | |
7d45c7c3 | 22179 | if (linkage_name != NULL) |
abc72ce4 DE |
22180 | { |
22181 | char *actual_name | |
22182 | = language_class_name_from_physname (cu->language_defn, | |
7d45c7c3 | 22183 | linkage_name); |
abc72ce4 DE |
22184 | char *name = NULL; |
22185 | ||
22186 | if (actual_name != NULL) | |
22187 | { | |
15d034d0 | 22188 | const char *die_name = dwarf2_name (die, cu); |
abc72ce4 DE |
22189 | |
22190 | if (die_name != NULL | |
22191 | && strcmp (die_name, actual_name) != 0) | |
22192 | { | |
22193 | /* Strip off the class name from the full name. | |
22194 | We want the prefix. */ | |
22195 | int die_name_len = strlen (die_name); | |
22196 | int actual_name_len = strlen (actual_name); | |
22197 | ||
22198 | /* Test for '::' as a sanity check. */ | |
22199 | if (actual_name_len > die_name_len + 2 | |
3e43a32a MS |
22200 | && actual_name[actual_name_len |
22201 | - die_name_len - 1] == ':') | |
224c3ddb | 22202 | name = (char *) obstack_copy0 ( |
e3b94546 | 22203 | &objfile->per_bfd->storage_obstack, |
224c3ddb | 22204 | actual_name, actual_name_len - die_name_len - 2); |
abc72ce4 DE |
22205 | } |
22206 | } | |
22207 | xfree (actual_name); | |
22208 | return name; | |
22209 | } | |
22210 | } | |
22211 | } | |
22212 | ||
22213 | return NULL; | |
22214 | } | |
22215 | ||
96408a79 SA |
22216 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
22217 | prefix part in such case. See | |
22218 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
22219 | ||
a121b7c1 | 22220 | static const char * |
96408a79 SA |
22221 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) |
22222 | { | |
22223 | struct attribute *attr; | |
e6a959d6 | 22224 | const char *base; |
96408a79 SA |
22225 | |
22226 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
22227 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
22228 | return NULL; | |
22229 | ||
7d45c7c3 | 22230 | if (dwarf2_string_attr (die, DW_AT_name, cu) != NULL) |
96408a79 SA |
22231 | return NULL; |
22232 | ||
73b9be8b | 22233 | attr = dw2_linkage_name_attr (die, cu); |
96408a79 SA |
22234 | if (attr == NULL || DW_STRING (attr) == NULL) |
22235 | return NULL; | |
22236 | ||
22237 | /* dwarf2_name had to be already called. */ | |
22238 | gdb_assert (DW_STRING_IS_CANONICAL (attr)); | |
22239 | ||
22240 | /* Strip the base name, keep any leading namespaces/classes. */ | |
22241 | base = strrchr (DW_STRING (attr), ':'); | |
22242 | if (base == NULL || base == DW_STRING (attr) || base[-1] != ':') | |
22243 | return ""; | |
22244 | ||
518817b3 | 22245 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e3b94546 | 22246 | return (char *) obstack_copy0 (&objfile->per_bfd->storage_obstack, |
224c3ddb SM |
22247 | DW_STRING (attr), |
22248 | &base[-1] - DW_STRING (attr)); | |
96408a79 SA |
22249 | } |
22250 | ||
fdde2d81 | 22251 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 22252 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 22253 | |
0114d602 DJ |
22254 | For example, if we're within the method foo() in the following |
22255 | code: | |
22256 | ||
22257 | namespace N { | |
22258 | class C { | |
22259 | void foo () { | |
22260 | } | |
22261 | }; | |
22262 | } | |
22263 | ||
22264 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 22265 | |
0d5cff50 | 22266 | static const char * |
e142c38c | 22267 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 22268 | { |
518817b3 SM |
22269 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22270 | = cu->per_cu->dwarf2_per_objfile; | |
0114d602 DJ |
22271 | struct die_info *parent, *spec_die; |
22272 | struct dwarf2_cu *spec_cu; | |
22273 | struct type *parent_type; | |
a121b7c1 | 22274 | const char *retval; |
63d06c5c | 22275 | |
9c37b5ae | 22276 | if (cu->language != language_cplus |
c44af4eb TT |
22277 | && cu->language != language_fortran && cu->language != language_d |
22278 | && cu->language != language_rust) | |
0114d602 DJ |
22279 | return ""; |
22280 | ||
96408a79 SA |
22281 | retval = anonymous_struct_prefix (die, cu); |
22282 | if (retval) | |
22283 | return retval; | |
22284 | ||
0114d602 DJ |
22285 | /* We have to be careful in the presence of DW_AT_specification. |
22286 | For example, with GCC 3.4, given the code | |
22287 | ||
22288 | namespace N { | |
22289 | void foo() { | |
22290 | // Definition of N::foo. | |
22291 | } | |
22292 | } | |
22293 | ||
22294 | then we'll have a tree of DIEs like this: | |
22295 | ||
22296 | 1: DW_TAG_compile_unit | |
22297 | 2: DW_TAG_namespace // N | |
22298 | 3: DW_TAG_subprogram // declaration of N::foo | |
22299 | 4: DW_TAG_subprogram // definition of N::foo | |
22300 | DW_AT_specification // refers to die #3 | |
22301 | ||
22302 | Thus, when processing die #4, we have to pretend that we're in | |
22303 | the context of its DW_AT_specification, namely the contex of die | |
22304 | #3. */ | |
22305 | spec_cu = cu; | |
22306 | spec_die = die_specification (die, &spec_cu); | |
22307 | if (spec_die == NULL) | |
22308 | parent = die->parent; | |
22309 | else | |
63d06c5c | 22310 | { |
0114d602 DJ |
22311 | parent = spec_die->parent; |
22312 | cu = spec_cu; | |
63d06c5c | 22313 | } |
0114d602 DJ |
22314 | |
22315 | if (parent == NULL) | |
22316 | return ""; | |
98bfdba5 PA |
22317 | else if (parent->building_fullname) |
22318 | { | |
22319 | const char *name; | |
22320 | const char *parent_name; | |
22321 | ||
22322 | /* It has been seen on RealView 2.2 built binaries, | |
22323 | DW_TAG_template_type_param types actually _defined_ as | |
22324 | children of the parent class: | |
22325 | ||
22326 | enum E {}; | |
22327 | template class <class Enum> Class{}; | |
22328 | Class<enum E> class_e; | |
22329 | ||
22330 | 1: DW_TAG_class_type (Class) | |
22331 | 2: DW_TAG_enumeration_type (E) | |
22332 | 3: DW_TAG_enumerator (enum1:0) | |
22333 | 3: DW_TAG_enumerator (enum2:1) | |
22334 | ... | |
22335 | 2: DW_TAG_template_type_param | |
22336 | DW_AT_type DW_FORM_ref_udata (E) | |
22337 | ||
22338 | Besides being broken debug info, it can put GDB into an | |
22339 | infinite loop. Consider: | |
22340 | ||
22341 | When we're building the full name for Class<E>, we'll start | |
22342 | at Class, and go look over its template type parameters, | |
22343 | finding E. We'll then try to build the full name of E, and | |
22344 | reach here. We're now trying to build the full name of E, | |
22345 | and look over the parent DIE for containing scope. In the | |
22346 | broken case, if we followed the parent DIE of E, we'd again | |
22347 | find Class, and once again go look at its template type | |
22348 | arguments, etc., etc. Simply don't consider such parent die | |
22349 | as source-level parent of this die (it can't be, the language | |
22350 | doesn't allow it), and break the loop here. */ | |
22351 | name = dwarf2_name (die, cu); | |
22352 | parent_name = dwarf2_name (parent, cu); | |
b98664d3 | 22353 | complaint (_("template param type '%s' defined within parent '%s'"), |
98bfdba5 PA |
22354 | name ? name : "<unknown>", |
22355 | parent_name ? parent_name : "<unknown>"); | |
22356 | return ""; | |
22357 | } | |
63d06c5c | 22358 | else |
0114d602 DJ |
22359 | switch (parent->tag) |
22360 | { | |
63d06c5c | 22361 | case DW_TAG_namespace: |
0114d602 | 22362 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
22363 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
22364 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
22365 | Work around this problem here. */ | |
22366 | if (cu->language == language_cplus | |
e86ca25f | 22367 | && strcmp (TYPE_NAME (parent_type), "::") == 0) |
acebe513 | 22368 | return ""; |
0114d602 | 22369 | /* We give a name to even anonymous namespaces. */ |
e86ca25f | 22370 | return TYPE_NAME (parent_type); |
63d06c5c | 22371 | case DW_TAG_class_type: |
680b30c7 | 22372 | case DW_TAG_interface_type: |
63d06c5c | 22373 | case DW_TAG_structure_type: |
0114d602 | 22374 | case DW_TAG_union_type: |
f55ee35c | 22375 | case DW_TAG_module: |
0114d602 | 22376 | parent_type = read_type_die (parent, cu); |
e86ca25f TT |
22377 | if (TYPE_NAME (parent_type) != NULL) |
22378 | return TYPE_NAME (parent_type); | |
0114d602 DJ |
22379 | else |
22380 | /* An anonymous structure is only allowed non-static data | |
22381 | members; no typedefs, no member functions, et cetera. | |
22382 | So it does not need a prefix. */ | |
22383 | return ""; | |
abc72ce4 | 22384 | case DW_TAG_compile_unit: |
95554aad | 22385 | case DW_TAG_partial_unit: |
abc72ce4 DE |
22386 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
22387 | if (cu->language == language_cplus | |
8b70b953 | 22388 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
22389 | && die->child != NULL |
22390 | && (die->tag == DW_TAG_class_type | |
22391 | || die->tag == DW_TAG_structure_type | |
22392 | || die->tag == DW_TAG_union_type)) | |
22393 | { | |
22394 | char *name = guess_full_die_structure_name (die, cu); | |
22395 | if (name != NULL) | |
22396 | return name; | |
22397 | } | |
22398 | return ""; | |
3d567982 TT |
22399 | case DW_TAG_enumeration_type: |
22400 | parent_type = read_type_die (parent, cu); | |
22401 | if (TYPE_DECLARED_CLASS (parent_type)) | |
22402 | { | |
e86ca25f TT |
22403 | if (TYPE_NAME (parent_type) != NULL) |
22404 | return TYPE_NAME (parent_type); | |
3d567982 TT |
22405 | return ""; |
22406 | } | |
22407 | /* Fall through. */ | |
63d06c5c | 22408 | default: |
8176b9b8 | 22409 | return determine_prefix (parent, cu); |
63d06c5c | 22410 | } |
63d06c5c DC |
22411 | } |
22412 | ||
3e43a32a MS |
22413 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
22414 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
22415 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
22416 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
22417 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 22418 | |
f55ee35c | 22419 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
22420 | |
22421 | static char * | |
f55ee35c JK |
22422 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
22423 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 22424 | { |
f55ee35c | 22425 | const char *lead = ""; |
5c315b68 | 22426 | const char *sep; |
63d06c5c | 22427 | |
3e43a32a MS |
22428 | if (suffix == NULL || suffix[0] == '\0' |
22429 | || prefix == NULL || prefix[0] == '\0') | |
987504bb | 22430 | sep = ""; |
45280282 IB |
22431 | else if (cu->language == language_d) |
22432 | { | |
22433 | /* For D, the 'main' function could be defined in any module, but it | |
22434 | should never be prefixed. */ | |
22435 | if (strcmp (suffix, "D main") == 0) | |
22436 | { | |
22437 | prefix = ""; | |
22438 | sep = ""; | |
22439 | } | |
22440 | else | |
22441 | sep = "."; | |
22442 | } | |
f55ee35c JK |
22443 | else if (cu->language == language_fortran && physname) |
22444 | { | |
22445 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
22446 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
22447 | ||
22448 | lead = "__"; | |
22449 | sep = "_MOD_"; | |
22450 | } | |
987504bb JJ |
22451 | else |
22452 | sep = "::"; | |
63d06c5c | 22453 | |
6dd47d34 DE |
22454 | if (prefix == NULL) |
22455 | prefix = ""; | |
22456 | if (suffix == NULL) | |
22457 | suffix = ""; | |
22458 | ||
987504bb JJ |
22459 | if (obs == NULL) |
22460 | { | |
3e43a32a | 22461 | char *retval |
224c3ddb SM |
22462 | = ((char *) |
22463 | xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1)); | |
9a619af0 | 22464 | |
f55ee35c JK |
22465 | strcpy (retval, lead); |
22466 | strcat (retval, prefix); | |
6dd47d34 DE |
22467 | strcat (retval, sep); |
22468 | strcat (retval, suffix); | |
63d06c5c DC |
22469 | return retval; |
22470 | } | |
987504bb JJ |
22471 | else |
22472 | { | |
22473 | /* We have an obstack. */ | |
f55ee35c | 22474 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 22475 | } |
63d06c5c DC |
22476 | } |
22477 | ||
c906108c SS |
22478 | /* Return sibling of die, NULL if no sibling. */ |
22479 | ||
f9aca02d | 22480 | static struct die_info * |
fba45db2 | 22481 | sibling_die (struct die_info *die) |
c906108c | 22482 | { |
639d11d3 | 22483 | return die->sibling; |
c906108c SS |
22484 | } |
22485 | ||
71c25dea TT |
22486 | /* Get name of a die, return NULL if not found. */ |
22487 | ||
15d034d0 TT |
22488 | static const char * |
22489 | dwarf2_canonicalize_name (const char *name, struct dwarf2_cu *cu, | |
71c25dea TT |
22490 | struct obstack *obstack) |
22491 | { | |
22492 | if (name && cu->language == language_cplus) | |
22493 | { | |
2f408ecb | 22494 | std::string canon_name = cp_canonicalize_string (name); |
71c25dea | 22495 | |
2f408ecb | 22496 | if (!canon_name.empty ()) |
71c25dea | 22497 | { |
2f408ecb PA |
22498 | if (canon_name != name) |
22499 | name = (const char *) obstack_copy0 (obstack, | |
22500 | canon_name.c_str (), | |
22501 | canon_name.length ()); | |
71c25dea TT |
22502 | } |
22503 | } | |
22504 | ||
22505 | return name; | |
c906108c SS |
22506 | } |
22507 | ||
96553a0c DE |
22508 | /* Get name of a die, return NULL if not found. |
22509 | Anonymous namespaces are converted to their magic string. */ | |
9219021c | 22510 | |
15d034d0 | 22511 | static const char * |
e142c38c | 22512 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
22513 | { |
22514 | struct attribute *attr; | |
518817b3 | 22515 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
9219021c | 22516 | |
e142c38c | 22517 | attr = dwarf2_attr (die, DW_AT_name, cu); |
53832f31 | 22518 | if ((!attr || !DW_STRING (attr)) |
96553a0c | 22519 | && die->tag != DW_TAG_namespace |
53832f31 TT |
22520 | && die->tag != DW_TAG_class_type |
22521 | && die->tag != DW_TAG_interface_type | |
22522 | && die->tag != DW_TAG_structure_type | |
22523 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
22524 | return NULL; |
22525 | ||
22526 | switch (die->tag) | |
22527 | { | |
22528 | case DW_TAG_compile_unit: | |
95554aad | 22529 | case DW_TAG_partial_unit: |
71c25dea TT |
22530 | /* Compilation units have a DW_AT_name that is a filename, not |
22531 | a source language identifier. */ | |
22532 | case DW_TAG_enumeration_type: | |
22533 | case DW_TAG_enumerator: | |
22534 | /* These tags always have simple identifiers already; no need | |
22535 | to canonicalize them. */ | |
22536 | return DW_STRING (attr); | |
907af001 | 22537 | |
96553a0c DE |
22538 | case DW_TAG_namespace: |
22539 | if (attr != NULL && DW_STRING (attr) != NULL) | |
22540 | return DW_STRING (attr); | |
22541 | return CP_ANONYMOUS_NAMESPACE_STR; | |
22542 | ||
907af001 UW |
22543 | case DW_TAG_class_type: |
22544 | case DW_TAG_interface_type: | |
22545 | case DW_TAG_structure_type: | |
22546 | case DW_TAG_union_type: | |
22547 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
22548 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
22549 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
22550 | and GCC 4.4. We work around this problem by ignoring these. */ | |
53832f31 | 22551 | if (attr && DW_STRING (attr) |
61012eef GB |
22552 | && (startswith (DW_STRING (attr), "._") |
22553 | || startswith (DW_STRING (attr), "<anonymous"))) | |
907af001 | 22554 | return NULL; |
53832f31 TT |
22555 | |
22556 | /* GCC might emit a nameless typedef that has a linkage name. See | |
22557 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
22558 | if (!attr || DW_STRING (attr) == NULL) | |
22559 | { | |
df5c6c50 | 22560 | char *demangled = NULL; |
53832f31 | 22561 | |
73b9be8b | 22562 | attr = dw2_linkage_name_attr (die, cu); |
53832f31 TT |
22563 | if (attr == NULL || DW_STRING (attr) == NULL) |
22564 | return NULL; | |
22565 | ||
df5c6c50 JK |
22566 | /* Avoid demangling DW_STRING (attr) the second time on a second |
22567 | call for the same DIE. */ | |
22568 | if (!DW_STRING_IS_CANONICAL (attr)) | |
8de20a37 | 22569 | demangled = gdb_demangle (DW_STRING (attr), DMGL_TYPES); |
53832f31 TT |
22570 | |
22571 | if (demangled) | |
22572 | { | |
e6a959d6 | 22573 | const char *base; |
96408a79 | 22574 | |
53832f31 | 22575 | /* FIXME: we already did this for the partial symbol... */ |
34a68019 | 22576 | DW_STRING (attr) |
224c3ddb | 22577 | = ((const char *) |
e3b94546 | 22578 | obstack_copy0 (&objfile->per_bfd->storage_obstack, |
224c3ddb | 22579 | demangled, strlen (demangled))); |
53832f31 TT |
22580 | DW_STRING_IS_CANONICAL (attr) = 1; |
22581 | xfree (demangled); | |
96408a79 SA |
22582 | |
22583 | /* Strip any leading namespaces/classes, keep only the base name. | |
22584 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
22585 | base = strrchr (DW_STRING (attr), ':'); | |
22586 | if (base && base > DW_STRING (attr) && base[-1] == ':') | |
22587 | return &base[1]; | |
22588 | else | |
22589 | return DW_STRING (attr); | |
53832f31 TT |
22590 | } |
22591 | } | |
907af001 UW |
22592 | break; |
22593 | ||
71c25dea | 22594 | default: |
907af001 UW |
22595 | break; |
22596 | } | |
22597 | ||
22598 | if (!DW_STRING_IS_CANONICAL (attr)) | |
22599 | { | |
22600 | DW_STRING (attr) | |
22601 | = dwarf2_canonicalize_name (DW_STRING (attr), cu, | |
e3b94546 | 22602 | &objfile->per_bfd->storage_obstack); |
907af001 | 22603 | DW_STRING_IS_CANONICAL (attr) = 1; |
71c25dea | 22604 | } |
907af001 | 22605 | return DW_STRING (attr); |
9219021c DC |
22606 | } |
22607 | ||
22608 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
22609 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
22610 | containing the return value on output. */ | |
9219021c DC |
22611 | |
22612 | static struct die_info * | |
f2f0e013 | 22613 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
22614 | { |
22615 | struct attribute *attr; | |
9219021c | 22616 | |
f2f0e013 | 22617 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
22618 | if (attr == NULL) |
22619 | return NULL; | |
22620 | ||
f2f0e013 | 22621 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
22622 | } |
22623 | ||
c906108c SS |
22624 | /* Convert a DIE tag into its string name. */ |
22625 | ||
f39c6ffd | 22626 | static const char * |
aa1ee363 | 22627 | dwarf_tag_name (unsigned tag) |
c906108c | 22628 | { |
f39c6ffd TT |
22629 | const char *name = get_DW_TAG_name (tag); |
22630 | ||
22631 | if (name == NULL) | |
22632 | return "DW_TAG_<unknown>"; | |
22633 | ||
22634 | return name; | |
c906108c SS |
22635 | } |
22636 | ||
22637 | /* Convert a DWARF attribute code into its string name. */ | |
22638 | ||
f39c6ffd | 22639 | static const char * |
aa1ee363 | 22640 | dwarf_attr_name (unsigned attr) |
c906108c | 22641 | { |
f39c6ffd TT |
22642 | const char *name; |
22643 | ||
c764a876 | 22644 | #ifdef MIPS /* collides with DW_AT_HP_block_index */ |
f39c6ffd TT |
22645 | if (attr == DW_AT_MIPS_fde) |
22646 | return "DW_AT_MIPS_fde"; | |
22647 | #else | |
22648 | if (attr == DW_AT_HP_block_index) | |
22649 | return "DW_AT_HP_block_index"; | |
c764a876 | 22650 | #endif |
f39c6ffd TT |
22651 | |
22652 | name = get_DW_AT_name (attr); | |
22653 | ||
22654 | if (name == NULL) | |
22655 | return "DW_AT_<unknown>"; | |
22656 | ||
22657 | return name; | |
c906108c SS |
22658 | } |
22659 | ||
22660 | /* Convert a DWARF value form code into its string name. */ | |
22661 | ||
f39c6ffd | 22662 | static const char * |
aa1ee363 | 22663 | dwarf_form_name (unsigned form) |
c906108c | 22664 | { |
f39c6ffd TT |
22665 | const char *name = get_DW_FORM_name (form); |
22666 | ||
22667 | if (name == NULL) | |
22668 | return "DW_FORM_<unknown>"; | |
22669 | ||
22670 | return name; | |
c906108c SS |
22671 | } |
22672 | ||
a121b7c1 | 22673 | static const char * |
fba45db2 | 22674 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
22675 | { |
22676 | if (mybool) | |
22677 | return "TRUE"; | |
22678 | else | |
22679 | return "FALSE"; | |
22680 | } | |
22681 | ||
22682 | /* Convert a DWARF type code into its string name. */ | |
22683 | ||
f39c6ffd | 22684 | static const char * |
aa1ee363 | 22685 | dwarf_type_encoding_name (unsigned enc) |
c906108c | 22686 | { |
f39c6ffd | 22687 | const char *name = get_DW_ATE_name (enc); |
c906108c | 22688 | |
f39c6ffd TT |
22689 | if (name == NULL) |
22690 | return "DW_ATE_<unknown>"; | |
c906108c | 22691 | |
f39c6ffd | 22692 | return name; |
c906108c | 22693 | } |
c906108c | 22694 | |
f9aca02d | 22695 | static void |
d97bc12b | 22696 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
22697 | { |
22698 | unsigned int i; | |
22699 | ||
d97bc12b | 22700 | print_spaces (indent, f); |
9d8780f0 | 22701 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset %s)\n", |
9c541725 | 22702 | dwarf_tag_name (die->tag), die->abbrev, |
9d8780f0 | 22703 | sect_offset_str (die->sect_off)); |
d97bc12b DE |
22704 | |
22705 | if (die->parent != NULL) | |
22706 | { | |
22707 | print_spaces (indent, f); | |
9d8780f0 SM |
22708 | fprintf_unfiltered (f, " parent at offset: %s\n", |
22709 | sect_offset_str (die->parent->sect_off)); | |
d97bc12b DE |
22710 | } |
22711 | ||
22712 | print_spaces (indent, f); | |
22713 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 22714 | dwarf_bool_name (die->child != NULL)); |
c906108c | 22715 | |
d97bc12b DE |
22716 | print_spaces (indent, f); |
22717 | fprintf_unfiltered (f, " attributes:\n"); | |
22718 | ||
c906108c SS |
22719 | for (i = 0; i < die->num_attrs; ++i) |
22720 | { | |
d97bc12b DE |
22721 | print_spaces (indent, f); |
22722 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
22723 | dwarf_attr_name (die->attrs[i].name), |
22724 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 22725 | |
c906108c SS |
22726 | switch (die->attrs[i].form) |
22727 | { | |
c906108c | 22728 | case DW_FORM_addr: |
3019eac3 | 22729 | case DW_FORM_GNU_addr_index: |
d97bc12b | 22730 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 22731 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
22732 | break; |
22733 | case DW_FORM_block2: | |
22734 | case DW_FORM_block4: | |
22735 | case DW_FORM_block: | |
22736 | case DW_FORM_block1: | |
56eb65bd SP |
22737 | fprintf_unfiltered (f, "block: size %s", |
22738 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
c906108c | 22739 | break; |
2dc7f7b3 | 22740 | case DW_FORM_exprloc: |
56eb65bd SP |
22741 | fprintf_unfiltered (f, "expression: size %s", |
22742 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
2dc7f7b3 | 22743 | break; |
0224619f JK |
22744 | case DW_FORM_data16: |
22745 | fprintf_unfiltered (f, "constant of 16 bytes"); | |
22746 | break; | |
4568ecf9 DE |
22747 | case DW_FORM_ref_addr: |
22748 | fprintf_unfiltered (f, "ref address: "); | |
22749 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
22750 | break; | |
36586728 TT |
22751 | case DW_FORM_GNU_ref_alt: |
22752 | fprintf_unfiltered (f, "alt ref address: "); | |
22753 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
22754 | break; | |
10b3939b DJ |
22755 | case DW_FORM_ref1: |
22756 | case DW_FORM_ref2: | |
22757 | case DW_FORM_ref4: | |
4568ecf9 DE |
22758 | case DW_FORM_ref8: |
22759 | case DW_FORM_ref_udata: | |
d97bc12b | 22760 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
4568ecf9 | 22761 | (long) (DW_UNSND (&die->attrs[i]))); |
10b3939b | 22762 | break; |
c906108c SS |
22763 | case DW_FORM_data1: |
22764 | case DW_FORM_data2: | |
22765 | case DW_FORM_data4: | |
ce5d95e1 | 22766 | case DW_FORM_data8: |
c906108c SS |
22767 | case DW_FORM_udata: |
22768 | case DW_FORM_sdata: | |
43bbcdc2 PH |
22769 | fprintf_unfiltered (f, "constant: %s", |
22770 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 22771 | break; |
2dc7f7b3 TT |
22772 | case DW_FORM_sec_offset: |
22773 | fprintf_unfiltered (f, "section offset: %s", | |
22774 | pulongest (DW_UNSND (&die->attrs[i]))); | |
22775 | break; | |
55f1336d | 22776 | case DW_FORM_ref_sig8: |
ac9ec31b DE |
22777 | fprintf_unfiltered (f, "signature: %s", |
22778 | hex_string (DW_SIGNATURE (&die->attrs[i]))); | |
348e048f | 22779 | break; |
c906108c | 22780 | case DW_FORM_string: |
4bdf3d34 | 22781 | case DW_FORM_strp: |
43988095 | 22782 | case DW_FORM_line_strp: |
3019eac3 | 22783 | case DW_FORM_GNU_str_index: |
36586728 | 22784 | case DW_FORM_GNU_strp_alt: |
8285870a | 22785 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 22786 | DW_STRING (&die->attrs[i]) |
8285870a JK |
22787 | ? DW_STRING (&die->attrs[i]) : "", |
22788 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
22789 | break; |
22790 | case DW_FORM_flag: | |
22791 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 22792 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 22793 | else |
d97bc12b | 22794 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 22795 | break; |
2dc7f7b3 TT |
22796 | case DW_FORM_flag_present: |
22797 | fprintf_unfiltered (f, "flag: TRUE"); | |
22798 | break; | |
a8329558 | 22799 | case DW_FORM_indirect: |
0963b4bd MS |
22800 | /* The reader will have reduced the indirect form to |
22801 | the "base form" so this form should not occur. */ | |
3e43a32a MS |
22802 | fprintf_unfiltered (f, |
22803 | "unexpected attribute form: DW_FORM_indirect"); | |
a8329558 | 22804 | break; |
663c44ac JK |
22805 | case DW_FORM_implicit_const: |
22806 | fprintf_unfiltered (f, "constant: %s", | |
22807 | plongest (DW_SND (&die->attrs[i]))); | |
22808 | break; | |
c906108c | 22809 | default: |
d97bc12b | 22810 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 22811 | die->attrs[i].form); |
d97bc12b | 22812 | break; |
c906108c | 22813 | } |
d97bc12b | 22814 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
22815 | } |
22816 | } | |
22817 | ||
f9aca02d | 22818 | static void |
d97bc12b | 22819 | dump_die_for_error (struct die_info *die) |
c906108c | 22820 | { |
d97bc12b DE |
22821 | dump_die_shallow (gdb_stderr, 0, die); |
22822 | } | |
22823 | ||
22824 | static void | |
22825 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
22826 | { | |
22827 | int indent = level * 4; | |
22828 | ||
22829 | gdb_assert (die != NULL); | |
22830 | ||
22831 | if (level >= max_level) | |
22832 | return; | |
22833 | ||
22834 | dump_die_shallow (f, indent, die); | |
22835 | ||
22836 | if (die->child != NULL) | |
c906108c | 22837 | { |
d97bc12b DE |
22838 | print_spaces (indent, f); |
22839 | fprintf_unfiltered (f, " Children:"); | |
22840 | if (level + 1 < max_level) | |
22841 | { | |
22842 | fprintf_unfiltered (f, "\n"); | |
22843 | dump_die_1 (f, level + 1, max_level, die->child); | |
22844 | } | |
22845 | else | |
22846 | { | |
3e43a32a MS |
22847 | fprintf_unfiltered (f, |
22848 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
22849 | } |
22850 | } | |
22851 | ||
22852 | if (die->sibling != NULL && level > 0) | |
22853 | { | |
22854 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
22855 | } |
22856 | } | |
22857 | ||
d97bc12b DE |
22858 | /* This is called from the pdie macro in gdbinit.in. |
22859 | It's not static so gcc will keep a copy callable from gdb. */ | |
22860 | ||
22861 | void | |
22862 | dump_die (struct die_info *die, int max_level) | |
22863 | { | |
22864 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
22865 | } | |
22866 | ||
f9aca02d | 22867 | static void |
51545339 | 22868 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22869 | { |
51545339 | 22870 | void **slot; |
c906108c | 22871 | |
9c541725 PA |
22872 | slot = htab_find_slot_with_hash (cu->die_hash, die, |
22873 | to_underlying (die->sect_off), | |
b64f50a1 | 22874 | INSERT); |
51545339 DJ |
22875 | |
22876 | *slot = die; | |
c906108c SS |
22877 | } |
22878 | ||
b64f50a1 JK |
22879 | /* Return DIE offset of ATTR. Return 0 with complaint if ATTR is not of the |
22880 | required kind. */ | |
22881 | ||
22882 | static sect_offset | |
ff39bb5e | 22883 | dwarf2_get_ref_die_offset (const struct attribute *attr) |
93311388 | 22884 | { |
7771576e | 22885 | if (attr_form_is_ref (attr)) |
9c541725 | 22886 | return (sect_offset) DW_UNSND (attr); |
93311388 | 22887 | |
b98664d3 | 22888 | complaint (_("unsupported die ref attribute form: '%s'"), |
93311388 | 22889 | dwarf_form_name (attr->form)); |
9c541725 | 22890 | return {}; |
c906108c SS |
22891 | } |
22892 | ||
43bbcdc2 PH |
22893 | /* Return the constant value held by ATTR. Return DEFAULT_VALUE if |
22894 | * the value held by the attribute is not constant. */ | |
a02abb62 | 22895 | |
43bbcdc2 | 22896 | static LONGEST |
ff39bb5e | 22897 | dwarf2_get_attr_constant_value (const struct attribute *attr, int default_value) |
a02abb62 | 22898 | { |
663c44ac | 22899 | if (attr->form == DW_FORM_sdata || attr->form == DW_FORM_implicit_const) |
a02abb62 JB |
22900 | return DW_SND (attr); |
22901 | else if (attr->form == DW_FORM_udata | |
22902 | || attr->form == DW_FORM_data1 | |
22903 | || attr->form == DW_FORM_data2 | |
22904 | || attr->form == DW_FORM_data4 | |
22905 | || attr->form == DW_FORM_data8) | |
22906 | return DW_UNSND (attr); | |
22907 | else | |
22908 | { | |
0224619f | 22909 | /* For DW_FORM_data16 see attr_form_is_constant. */ |
b98664d3 | 22910 | complaint (_("Attribute value is not a constant (%s)"), |
a02abb62 JB |
22911 | dwarf_form_name (attr->form)); |
22912 | return default_value; | |
22913 | } | |
22914 | } | |
22915 | ||
348e048f DE |
22916 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
22917 | On entry *REF_CU is the CU of SRC_DIE. | |
22918 | On exit *REF_CU is the CU of the result. */ | |
22919 | ||
22920 | static struct die_info * | |
ff39bb5e | 22921 | follow_die_ref_or_sig (struct die_info *src_die, const struct attribute *attr, |
348e048f DE |
22922 | struct dwarf2_cu **ref_cu) |
22923 | { | |
22924 | struct die_info *die; | |
22925 | ||
7771576e | 22926 | if (attr_form_is_ref (attr)) |
348e048f | 22927 | die = follow_die_ref (src_die, attr, ref_cu); |
55f1336d | 22928 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
22929 | die = follow_die_sig (src_die, attr, ref_cu); |
22930 | else | |
22931 | { | |
22932 | dump_die_for_error (src_die); | |
22933 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
518817b3 | 22934 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
348e048f DE |
22935 | } |
22936 | ||
22937 | return die; | |
03dd20cc DJ |
22938 | } |
22939 | ||
5c631832 | 22940 | /* Follow reference OFFSET. |
673bfd45 DE |
22941 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
22942 | On exit *REF_CU is the CU of the result. | |
22943 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 22944 | |
f9aca02d | 22945 | static struct die_info * |
9c541725 | 22946 | follow_die_offset (sect_offset sect_off, int offset_in_dwz, |
36586728 | 22947 | struct dwarf2_cu **ref_cu) |
c906108c | 22948 | { |
10b3939b | 22949 | struct die_info temp_die; |
f2f0e013 | 22950 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
518817b3 SM |
22951 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22952 | = cu->per_cu->dwarf2_per_objfile; | |
10b3939b | 22953 | |
348e048f DE |
22954 | gdb_assert (cu->per_cu != NULL); |
22955 | ||
98bfdba5 PA |
22956 | target_cu = cu; |
22957 | ||
3019eac3 | 22958 | if (cu->per_cu->is_debug_types) |
348e048f DE |
22959 | { |
22960 | /* .debug_types CUs cannot reference anything outside their CU. | |
22961 | If they need to, they have to reference a signatured type via | |
55f1336d | 22962 | DW_FORM_ref_sig8. */ |
9c541725 | 22963 | if (!offset_in_cu_p (&cu->header, sect_off)) |
5c631832 | 22964 | return NULL; |
348e048f | 22965 | } |
36586728 | 22966 | else if (offset_in_dwz != cu->per_cu->is_dwz |
9c541725 | 22967 | || !offset_in_cu_p (&cu->header, sect_off)) |
10b3939b DJ |
22968 | { |
22969 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 22970 | |
9c541725 | 22971 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
ed2dc618 | 22972 | dwarf2_per_objfile); |
03dd20cc DJ |
22973 | |
22974 | /* If necessary, add it to the queue and load its DIEs. */ | |
95554aad | 22975 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
58f0c718 | 22976 | load_full_comp_unit (per_cu, false, cu->language); |
03dd20cc | 22977 | |
10b3939b DJ |
22978 | target_cu = per_cu->cu; |
22979 | } | |
98bfdba5 PA |
22980 | else if (cu->dies == NULL) |
22981 | { | |
22982 | /* We're loading full DIEs during partial symbol reading. */ | |
22983 | gdb_assert (dwarf2_per_objfile->reading_partial_symbols); | |
58f0c718 | 22984 | load_full_comp_unit (cu->per_cu, false, language_minimal); |
98bfdba5 | 22985 | } |
c906108c | 22986 | |
f2f0e013 | 22987 | *ref_cu = target_cu; |
9c541725 | 22988 | temp_die.sect_off = sect_off; |
9a3c8263 | 22989 | return (struct die_info *) htab_find_with_hash (target_cu->die_hash, |
9c541725 PA |
22990 | &temp_die, |
22991 | to_underlying (sect_off)); | |
5c631832 | 22992 | } |
10b3939b | 22993 | |
5c631832 JK |
22994 | /* Follow reference attribute ATTR of SRC_DIE. |
22995 | On entry *REF_CU is the CU of SRC_DIE. | |
22996 | On exit *REF_CU is the CU of the result. */ | |
22997 | ||
22998 | static struct die_info * | |
ff39bb5e | 22999 | follow_die_ref (struct die_info *src_die, const struct attribute *attr, |
5c631832 JK |
23000 | struct dwarf2_cu **ref_cu) |
23001 | { | |
9c541725 | 23002 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
5c631832 JK |
23003 | struct dwarf2_cu *cu = *ref_cu; |
23004 | struct die_info *die; | |
23005 | ||
9c541725 | 23006 | die = follow_die_offset (sect_off, |
36586728 TT |
23007 | (attr->form == DW_FORM_GNU_ref_alt |
23008 | || cu->per_cu->is_dwz), | |
23009 | ref_cu); | |
5c631832 | 23010 | if (!die) |
9d8780f0 SM |
23011 | error (_("Dwarf Error: Cannot find DIE at %s referenced from DIE " |
23012 | "at %s [in module %s]"), | |
23013 | sect_offset_str (sect_off), sect_offset_str (src_die->sect_off), | |
518817b3 | 23014 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
348e048f | 23015 | |
5c631832 JK |
23016 | return die; |
23017 | } | |
23018 | ||
9c541725 | 23019 | /* Return DWARF block referenced by DW_AT_location of DIE at SECT_OFF at PER_CU. |
d83e736b | 23020 | Returned value is intended for DW_OP_call*. Returned |
e3b94546 SM |
23021 | dwarf2_locexpr_baton->data has lifetime of |
23022 | PER_CU->DWARF2_PER_OBJFILE->OBJFILE. */ | |
5c631832 JK |
23023 | |
23024 | struct dwarf2_locexpr_baton | |
9c541725 | 23025 | dwarf2_fetch_die_loc_sect_off (sect_offset sect_off, |
8b9737bf TT |
23026 | struct dwarf2_per_cu_data *per_cu, |
23027 | CORE_ADDR (*get_frame_pc) (void *baton), | |
e4a62c65 | 23028 | void *baton, bool resolve_abstract_p) |
5c631832 | 23029 | { |
918dd910 | 23030 | struct dwarf2_cu *cu; |
5c631832 JK |
23031 | struct die_info *die; |
23032 | struct attribute *attr; | |
23033 | struct dwarf2_locexpr_baton retval; | |
12359b5e SM |
23034 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
23035 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8cf6f0b1 | 23036 | |
918dd910 | 23037 | if (per_cu->cu == NULL) |
58f0c718 | 23038 | load_cu (per_cu, false); |
918dd910 | 23039 | cu = per_cu->cu; |
cc12ce38 DE |
23040 | if (cu == NULL) |
23041 | { | |
23042 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
23043 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
23044 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
23045 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 23046 | } |
918dd910 | 23047 | |
9c541725 | 23048 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
5c631832 | 23049 | if (!die) |
9d8780f0 SM |
23050 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
23051 | sect_offset_str (sect_off), objfile_name (objfile)); | |
5c631832 JK |
23052 | |
23053 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
e4a62c65 TV |
23054 | if (!attr && resolve_abstract_p |
23055 | && (dwarf2_per_objfile->abstract_to_concrete.find (die) | |
23056 | != dwarf2_per_objfile->abstract_to_concrete.end ())) | |
23057 | { | |
23058 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
23059 | ||
23060 | for (const auto &cand : dwarf2_per_objfile->abstract_to_concrete[die]) | |
23061 | { | |
23062 | if (!cand->parent | |
23063 | || cand->parent->tag != DW_TAG_subprogram) | |
23064 | continue; | |
23065 | ||
23066 | CORE_ADDR pc_low, pc_high; | |
23067 | get_scope_pc_bounds (cand->parent, &pc_low, &pc_high, cu); | |
23068 | if (pc_low == ((CORE_ADDR) -1) | |
23069 | || !(pc_low <= pc && pc < pc_high)) | |
23070 | continue; | |
23071 | ||
23072 | die = cand; | |
23073 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
23074 | break; | |
23075 | } | |
23076 | } | |
23077 | ||
5c631832 JK |
23078 | if (!attr) |
23079 | { | |
e103e986 JK |
23080 | /* DWARF: "If there is no such attribute, then there is no effect.". |
23081 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 23082 | |
e103e986 | 23083 | retval.data = NULL; |
5c631832 JK |
23084 | retval.size = 0; |
23085 | } | |
8cf6f0b1 TT |
23086 | else if (attr_form_is_section_offset (attr)) |
23087 | { | |
23088 | struct dwarf2_loclist_baton loclist_baton; | |
23089 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
23090 | size_t size; | |
23091 | ||
23092 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
23093 | ||
23094 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
23095 | &size, pc); | |
23096 | retval.size = size; | |
23097 | } | |
5c631832 JK |
23098 | else |
23099 | { | |
23100 | if (!attr_form_is_block (attr)) | |
9d8780f0 | 23101 | error (_("Dwarf Error: DIE at %s referenced in module %s " |
5c631832 | 23102 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), |
9d8780f0 | 23103 | sect_offset_str (sect_off), objfile_name (objfile)); |
5c631832 JK |
23104 | |
23105 | retval.data = DW_BLOCK (attr)->data; | |
23106 | retval.size = DW_BLOCK (attr)->size; | |
23107 | } | |
23108 | retval.per_cu = cu->per_cu; | |
918dd910 | 23109 | |
ed2dc618 | 23110 | age_cached_comp_units (dwarf2_per_objfile); |
918dd910 | 23111 | |
5c631832 | 23112 | return retval; |
348e048f DE |
23113 | } |
23114 | ||
8b9737bf TT |
23115 | /* Like dwarf2_fetch_die_loc_sect_off, but take a CU |
23116 | offset. */ | |
23117 | ||
23118 | struct dwarf2_locexpr_baton | |
23119 | dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu, | |
23120 | struct dwarf2_per_cu_data *per_cu, | |
23121 | CORE_ADDR (*get_frame_pc) (void *baton), | |
23122 | void *baton) | |
23123 | { | |
9c541725 | 23124 | sect_offset sect_off = per_cu->sect_off + to_underlying (offset_in_cu); |
8b9737bf | 23125 | |
9c541725 | 23126 | return dwarf2_fetch_die_loc_sect_off (sect_off, per_cu, get_frame_pc, baton); |
8b9737bf TT |
23127 | } |
23128 | ||
b6807d98 TT |
23129 | /* Write a constant of a given type as target-ordered bytes into |
23130 | OBSTACK. */ | |
23131 | ||
23132 | static const gdb_byte * | |
23133 | write_constant_as_bytes (struct obstack *obstack, | |
23134 | enum bfd_endian byte_order, | |
23135 | struct type *type, | |
23136 | ULONGEST value, | |
23137 | LONGEST *len) | |
23138 | { | |
23139 | gdb_byte *result; | |
23140 | ||
23141 | *len = TYPE_LENGTH (type); | |
224c3ddb | 23142 | result = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
23143 | store_unsigned_integer (result, *len, byte_order, value); |
23144 | ||
23145 | return result; | |
23146 | } | |
23147 | ||
23148 | /* If the DIE at OFFSET in PER_CU has a DW_AT_const_value, return a | |
23149 | pointer to the constant bytes and set LEN to the length of the | |
23150 | data. If memory is needed, allocate it on OBSTACK. If the DIE | |
23151 | does not have a DW_AT_const_value, return NULL. */ | |
23152 | ||
23153 | const gdb_byte * | |
9c541725 | 23154 | dwarf2_fetch_constant_bytes (sect_offset sect_off, |
b6807d98 TT |
23155 | struct dwarf2_per_cu_data *per_cu, |
23156 | struct obstack *obstack, | |
23157 | LONGEST *len) | |
23158 | { | |
23159 | struct dwarf2_cu *cu; | |
23160 | struct die_info *die; | |
23161 | struct attribute *attr; | |
23162 | const gdb_byte *result = NULL; | |
23163 | struct type *type; | |
23164 | LONGEST value; | |
23165 | enum bfd_endian byte_order; | |
e3b94546 | 23166 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
b6807d98 | 23167 | |
b6807d98 | 23168 | if (per_cu->cu == NULL) |
58f0c718 | 23169 | load_cu (per_cu, false); |
b6807d98 | 23170 | cu = per_cu->cu; |
cc12ce38 DE |
23171 | if (cu == NULL) |
23172 | { | |
23173 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
23174 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
23175 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
23176 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 23177 | } |
b6807d98 | 23178 | |
9c541725 | 23179 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
b6807d98 | 23180 | if (!die) |
9d8780f0 SM |
23181 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
23182 | sect_offset_str (sect_off), objfile_name (objfile)); | |
b6807d98 TT |
23183 | |
23184 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
23185 | if (attr == NULL) | |
23186 | return NULL; | |
23187 | ||
e3b94546 | 23188 | byte_order = (bfd_big_endian (objfile->obfd) |
b6807d98 TT |
23189 | ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); |
23190 | ||
23191 | switch (attr->form) | |
23192 | { | |
23193 | case DW_FORM_addr: | |
23194 | case DW_FORM_GNU_addr_index: | |
23195 | { | |
23196 | gdb_byte *tem; | |
23197 | ||
23198 | *len = cu->header.addr_size; | |
224c3ddb | 23199 | tem = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
23200 | store_unsigned_integer (tem, *len, byte_order, DW_ADDR (attr)); |
23201 | result = tem; | |
23202 | } | |
23203 | break; | |
23204 | case DW_FORM_string: | |
23205 | case DW_FORM_strp: | |
23206 | case DW_FORM_GNU_str_index: | |
23207 | case DW_FORM_GNU_strp_alt: | |
23208 | /* DW_STRING is already allocated on the objfile obstack, point | |
23209 | directly to it. */ | |
23210 | result = (const gdb_byte *) DW_STRING (attr); | |
23211 | *len = strlen (DW_STRING (attr)); | |
23212 | break; | |
23213 | case DW_FORM_block1: | |
23214 | case DW_FORM_block2: | |
23215 | case DW_FORM_block4: | |
23216 | case DW_FORM_block: | |
23217 | case DW_FORM_exprloc: | |
0224619f | 23218 | case DW_FORM_data16: |
b6807d98 TT |
23219 | result = DW_BLOCK (attr)->data; |
23220 | *len = DW_BLOCK (attr)->size; | |
23221 | break; | |
23222 | ||
23223 | /* The DW_AT_const_value attributes are supposed to carry the | |
23224 | symbol's value "represented as it would be on the target | |
23225 | architecture." By the time we get here, it's already been | |
23226 | converted to host endianness, so we just need to sign- or | |
23227 | zero-extend it as appropriate. */ | |
23228 | case DW_FORM_data1: | |
23229 | type = die_type (die, cu); | |
23230 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 8); | |
23231 | if (result == NULL) | |
23232 | result = write_constant_as_bytes (obstack, byte_order, | |
23233 | type, value, len); | |
23234 | break; | |
23235 | case DW_FORM_data2: | |
23236 | type = die_type (die, cu); | |
23237 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 16); | |
23238 | if (result == NULL) | |
23239 | result = write_constant_as_bytes (obstack, byte_order, | |
23240 | type, value, len); | |
23241 | break; | |
23242 | case DW_FORM_data4: | |
23243 | type = die_type (die, cu); | |
23244 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 32); | |
23245 | if (result == NULL) | |
23246 | result = write_constant_as_bytes (obstack, byte_order, | |
23247 | type, value, len); | |
23248 | break; | |
23249 | case DW_FORM_data8: | |
23250 | type = die_type (die, cu); | |
23251 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 64); | |
23252 | if (result == NULL) | |
23253 | result = write_constant_as_bytes (obstack, byte_order, | |
23254 | type, value, len); | |
23255 | break; | |
23256 | ||
23257 | case DW_FORM_sdata: | |
663c44ac | 23258 | case DW_FORM_implicit_const: |
b6807d98 TT |
23259 | type = die_type (die, cu); |
23260 | result = write_constant_as_bytes (obstack, byte_order, | |
23261 | type, DW_SND (attr), len); | |
23262 | break; | |
23263 | ||
23264 | case DW_FORM_udata: | |
23265 | type = die_type (die, cu); | |
23266 | result = write_constant_as_bytes (obstack, byte_order, | |
23267 | type, DW_UNSND (attr), len); | |
23268 | break; | |
23269 | ||
23270 | default: | |
b98664d3 | 23271 | complaint (_("unsupported const value attribute form: '%s'"), |
b6807d98 TT |
23272 | dwarf_form_name (attr->form)); |
23273 | break; | |
23274 | } | |
23275 | ||
23276 | return result; | |
23277 | } | |
23278 | ||
7942e96e AA |
23279 | /* Return the type of the die at OFFSET in PER_CU. Return NULL if no |
23280 | valid type for this die is found. */ | |
23281 | ||
23282 | struct type * | |
9c541725 | 23283 | dwarf2_fetch_die_type_sect_off (sect_offset sect_off, |
7942e96e AA |
23284 | struct dwarf2_per_cu_data *per_cu) |
23285 | { | |
23286 | struct dwarf2_cu *cu; | |
23287 | struct die_info *die; | |
23288 | ||
7942e96e | 23289 | if (per_cu->cu == NULL) |
58f0c718 | 23290 | load_cu (per_cu, false); |
7942e96e AA |
23291 | cu = per_cu->cu; |
23292 | if (!cu) | |
23293 | return NULL; | |
23294 | ||
9c541725 | 23295 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
7942e96e AA |
23296 | if (!die) |
23297 | return NULL; | |
23298 | ||
23299 | return die_type (die, cu); | |
23300 | } | |
23301 | ||
8a9b8146 TT |
23302 | /* Return the type of the DIE at DIE_OFFSET in the CU named by |
23303 | PER_CU. */ | |
23304 | ||
23305 | struct type * | |
b64f50a1 | 23306 | dwarf2_get_die_type (cu_offset die_offset, |
8a9b8146 TT |
23307 | struct dwarf2_per_cu_data *per_cu) |
23308 | { | |
9c541725 | 23309 | sect_offset die_offset_sect = per_cu->sect_off + to_underlying (die_offset); |
b64f50a1 | 23310 | return get_die_type_at_offset (die_offset_sect, per_cu); |
8a9b8146 TT |
23311 | } |
23312 | ||
ac9ec31b | 23313 | /* Follow type unit SIG_TYPE referenced by SRC_DIE. |
348e048f | 23314 | On entry *REF_CU is the CU of SRC_DIE. |
ac9ec31b DE |
23315 | On exit *REF_CU is the CU of the result. |
23316 | Returns NULL if the referenced DIE isn't found. */ | |
348e048f DE |
23317 | |
23318 | static struct die_info * | |
ac9ec31b DE |
23319 | follow_die_sig_1 (struct die_info *src_die, struct signatured_type *sig_type, |
23320 | struct dwarf2_cu **ref_cu) | |
348e048f | 23321 | { |
348e048f | 23322 | struct die_info temp_die; |
348e048f DE |
23323 | struct dwarf2_cu *sig_cu; |
23324 | struct die_info *die; | |
23325 | ||
ac9ec31b DE |
23326 | /* While it might be nice to assert sig_type->type == NULL here, |
23327 | we can get here for DW_AT_imported_declaration where we need | |
23328 | the DIE not the type. */ | |
348e048f DE |
23329 | |
23330 | /* If necessary, add it to the queue and load its DIEs. */ | |
23331 | ||
95554aad | 23332 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, language_minimal)) |
a0f42c21 | 23333 | read_signatured_type (sig_type); |
348e048f | 23334 | |
348e048f | 23335 | sig_cu = sig_type->per_cu.cu; |
69d751e3 | 23336 | gdb_assert (sig_cu != NULL); |
9c541725 PA |
23337 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
23338 | temp_die.sect_off = sig_type->type_offset_in_section; | |
9a3c8263 | 23339 | die = (struct die_info *) htab_find_with_hash (sig_cu->die_hash, &temp_die, |
9c541725 | 23340 | to_underlying (temp_die.sect_off)); |
348e048f DE |
23341 | if (die) |
23342 | { | |
ed2dc618 | 23343 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 23344 | = (*ref_cu)->per_cu->dwarf2_per_objfile; |
ed2dc618 | 23345 | |
796a7ff8 DE |
23346 | /* For .gdb_index version 7 keep track of included TUs. |
23347 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
23348 | if (dwarf2_per_objfile->index_table != NULL | |
23349 | && dwarf2_per_objfile->index_table->version <= 7) | |
23350 | { | |
23351 | VEC_safe_push (dwarf2_per_cu_ptr, | |
23352 | (*ref_cu)->per_cu->imported_symtabs, | |
23353 | sig_cu->per_cu); | |
23354 | } | |
23355 | ||
348e048f DE |
23356 | *ref_cu = sig_cu; |
23357 | return die; | |
23358 | } | |
23359 | ||
ac9ec31b DE |
23360 | return NULL; |
23361 | } | |
23362 | ||
23363 | /* Follow signatured type referenced by ATTR in SRC_DIE. | |
23364 | On entry *REF_CU is the CU of SRC_DIE. | |
23365 | On exit *REF_CU is the CU of the result. | |
23366 | The result is the DIE of the type. | |
23367 | If the referenced type cannot be found an error is thrown. */ | |
23368 | ||
23369 | static struct die_info * | |
ff39bb5e | 23370 | follow_die_sig (struct die_info *src_die, const struct attribute *attr, |
ac9ec31b DE |
23371 | struct dwarf2_cu **ref_cu) |
23372 | { | |
23373 | ULONGEST signature = DW_SIGNATURE (attr); | |
23374 | struct signatured_type *sig_type; | |
23375 | struct die_info *die; | |
23376 | ||
23377 | gdb_assert (attr->form == DW_FORM_ref_sig8); | |
23378 | ||
a2ce51a0 | 23379 | sig_type = lookup_signatured_type (*ref_cu, signature); |
ac9ec31b DE |
23380 | /* sig_type will be NULL if the signatured type is missing from |
23381 | the debug info. */ | |
23382 | if (sig_type == NULL) | |
23383 | { | |
23384 | error (_("Dwarf Error: Cannot find signatured DIE %s referenced" | |
9d8780f0 SM |
23385 | " from DIE at %s [in module %s]"), |
23386 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
518817b3 | 23387 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23388 | } |
23389 | ||
23390 | die = follow_die_sig_1 (src_die, sig_type, ref_cu); | |
23391 | if (die == NULL) | |
23392 | { | |
23393 | dump_die_for_error (src_die); | |
23394 | error (_("Dwarf Error: Problem reading signatured DIE %s referenced" | |
9d8780f0 SM |
23395 | " from DIE at %s [in module %s]"), |
23396 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
518817b3 | 23397 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23398 | } |
23399 | ||
23400 | return die; | |
23401 | } | |
23402 | ||
23403 | /* Get the type specified by SIGNATURE referenced in DIE/CU, | |
23404 | reading in and processing the type unit if necessary. */ | |
23405 | ||
23406 | static struct type * | |
23407 | get_signatured_type (struct die_info *die, ULONGEST signature, | |
23408 | struct dwarf2_cu *cu) | |
23409 | { | |
518817b3 SM |
23410 | struct dwarf2_per_objfile *dwarf2_per_objfile |
23411 | = cu->per_cu->dwarf2_per_objfile; | |
ac9ec31b DE |
23412 | struct signatured_type *sig_type; |
23413 | struct dwarf2_cu *type_cu; | |
23414 | struct die_info *type_die; | |
23415 | struct type *type; | |
23416 | ||
a2ce51a0 | 23417 | sig_type = lookup_signatured_type (cu, signature); |
ac9ec31b DE |
23418 | /* sig_type will be NULL if the signatured type is missing from |
23419 | the debug info. */ | |
23420 | if (sig_type == NULL) | |
23421 | { | |
b98664d3 | 23422 | complaint (_("Dwarf Error: Cannot find signatured DIE %s referenced" |
9d8780f0 SM |
23423 | " from DIE at %s [in module %s]"), |
23424 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 23425 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23426 | return build_error_marker_type (cu, die); |
23427 | } | |
23428 | ||
23429 | /* If we already know the type we're done. */ | |
23430 | if (sig_type->type != NULL) | |
23431 | return sig_type->type; | |
23432 | ||
23433 | type_cu = cu; | |
23434 | type_die = follow_die_sig_1 (die, sig_type, &type_cu); | |
23435 | if (type_die != NULL) | |
23436 | { | |
23437 | /* N.B. We need to call get_die_type to ensure only one type for this DIE | |
23438 | is created. This is important, for example, because for c++ classes | |
23439 | we need TYPE_NAME set which is only done by new_symbol. Blech. */ | |
23440 | type = read_type_die (type_die, type_cu); | |
23441 | if (type == NULL) | |
23442 | { | |
b98664d3 | 23443 | complaint (_("Dwarf Error: Cannot build signatured type %s" |
9d8780f0 SM |
23444 | " referenced from DIE at %s [in module %s]"), |
23445 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 23446 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23447 | type = build_error_marker_type (cu, die); |
23448 | } | |
23449 | } | |
23450 | else | |
23451 | { | |
b98664d3 | 23452 | complaint (_("Dwarf Error: Problem reading signatured DIE %s referenced" |
9d8780f0 SM |
23453 | " from DIE at %s [in module %s]"), |
23454 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 23455 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23456 | type = build_error_marker_type (cu, die); |
23457 | } | |
23458 | sig_type->type = type; | |
23459 | ||
23460 | return type; | |
23461 | } | |
23462 | ||
23463 | /* Get the type specified by the DW_AT_signature ATTR in DIE/CU, | |
23464 | reading in and processing the type unit if necessary. */ | |
23465 | ||
23466 | static struct type * | |
ff39bb5e | 23467 | get_DW_AT_signature_type (struct die_info *die, const struct attribute *attr, |
b385a60d | 23468 | struct dwarf2_cu *cu) /* ARI: editCase function */ |
ac9ec31b DE |
23469 | { |
23470 | /* Yes, DW_AT_signature can use a non-ref_sig8 reference. */ | |
7771576e | 23471 | if (attr_form_is_ref (attr)) |
ac9ec31b DE |
23472 | { |
23473 | struct dwarf2_cu *type_cu = cu; | |
23474 | struct die_info *type_die = follow_die_ref (die, attr, &type_cu); | |
23475 | ||
23476 | return read_type_die (type_die, type_cu); | |
23477 | } | |
23478 | else if (attr->form == DW_FORM_ref_sig8) | |
23479 | { | |
23480 | return get_signatured_type (die, DW_SIGNATURE (attr), cu); | |
23481 | } | |
23482 | else | |
23483 | { | |
518817b3 SM |
23484 | struct dwarf2_per_objfile *dwarf2_per_objfile |
23485 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 23486 | |
b98664d3 | 23487 | complaint (_("Dwarf Error: DW_AT_signature has bad form %s in DIE" |
9d8780f0 SM |
23488 | " at %s [in module %s]"), |
23489 | dwarf_form_name (attr->form), sect_offset_str (die->sect_off), | |
4262abfb | 23490 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23491 | return build_error_marker_type (cu, die); |
23492 | } | |
348e048f DE |
23493 | } |
23494 | ||
e5fe5e75 | 23495 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
23496 | |
23497 | static void | |
e5fe5e75 | 23498 | load_full_type_unit (struct dwarf2_per_cu_data *per_cu) |
348e048f | 23499 | { |
52dc124a | 23500 | struct signatured_type *sig_type; |
348e048f | 23501 | |
f4dc4d17 DE |
23502 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
23503 | gdb_assert (! IS_TYPE_UNIT_GROUP (per_cu)); | |
23504 | ||
6721b2ec DE |
23505 | /* We have the per_cu, but we need the signatured_type. |
23506 | Fortunately this is an easy translation. */ | |
23507 | gdb_assert (per_cu->is_debug_types); | |
23508 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 23509 | |
6721b2ec | 23510 | gdb_assert (per_cu->cu == NULL); |
348e048f | 23511 | |
52dc124a | 23512 | read_signatured_type (sig_type); |
348e048f | 23513 | |
6721b2ec | 23514 | gdb_assert (per_cu->cu != NULL); |
348e048f DE |
23515 | } |
23516 | ||
dee91e82 DE |
23517 | /* die_reader_func for read_signatured_type. |
23518 | This is identical to load_full_comp_unit_reader, | |
23519 | but is kept separate for now. */ | |
348e048f DE |
23520 | |
23521 | static void | |
dee91e82 | 23522 | read_signatured_type_reader (const struct die_reader_specs *reader, |
d521ce57 | 23523 | const gdb_byte *info_ptr, |
dee91e82 DE |
23524 | struct die_info *comp_unit_die, |
23525 | int has_children, | |
23526 | void *data) | |
348e048f | 23527 | { |
dee91e82 | 23528 | struct dwarf2_cu *cu = reader->cu; |
348e048f | 23529 | |
dee91e82 DE |
23530 | gdb_assert (cu->die_hash == NULL); |
23531 | cu->die_hash = | |
23532 | htab_create_alloc_ex (cu->header.length / 12, | |
23533 | die_hash, | |
23534 | die_eq, | |
23535 | NULL, | |
23536 | &cu->comp_unit_obstack, | |
23537 | hashtab_obstack_allocate, | |
23538 | dummy_obstack_deallocate); | |
348e048f | 23539 | |
dee91e82 DE |
23540 | if (has_children) |
23541 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
23542 | &info_ptr, comp_unit_die); | |
23543 | cu->dies = comp_unit_die; | |
23544 | /* comp_unit_die is not stored in die_hash, no need. */ | |
348e048f DE |
23545 | |
23546 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 23547 | all CUs needed for references have been loaded yet, and symbol |
348e048f | 23548 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
23549 | or we won't be able to build types correctly. |
23550 | Similarly, if we do not read the producer, we can not apply | |
23551 | producer-specific interpretation. */ | |
95554aad | 23552 | prepare_one_comp_unit (cu, cu->dies, language_minimal); |
dee91e82 | 23553 | } |
348e048f | 23554 | |
3019eac3 DE |
23555 | /* Read in a signatured type and build its CU and DIEs. |
23556 | If the type is a stub for the real type in a DWO file, | |
23557 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
23558 | |
23559 | static void | |
23560 | read_signatured_type (struct signatured_type *sig_type) | |
23561 | { | |
23562 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 23563 | |
3019eac3 | 23564 | gdb_assert (per_cu->is_debug_types); |
dee91e82 | 23565 | gdb_assert (per_cu->cu == NULL); |
348e048f | 23566 | |
58f0c718 | 23567 | init_cutu_and_read_dies (per_cu, NULL, 0, 1, false, |
f4dc4d17 | 23568 | read_signatured_type_reader, NULL); |
7ee85ab1 | 23569 | sig_type->per_cu.tu_read = 1; |
c906108c SS |
23570 | } |
23571 | ||
c906108c SS |
23572 | /* Decode simple location descriptions. |
23573 | Given a pointer to a dwarf block that defines a location, compute | |
23574 | the location and return the value. | |
23575 | ||
4cecd739 DJ |
23576 | NOTE drow/2003-11-18: This function is called in two situations |
23577 | now: for the address of static or global variables (partial symbols | |
23578 | only) and for offsets into structures which are expected to be | |
23579 | (more or less) constant. The partial symbol case should go away, | |
23580 | and only the constant case should remain. That will let this | |
23581 | function complain more accurately. A few special modes are allowed | |
23582 | without complaint for global variables (for instance, global | |
23583 | register values and thread-local values). | |
c906108c SS |
23584 | |
23585 | A location description containing no operations indicates that the | |
4cecd739 | 23586 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
23587 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
23588 | callers will only want a very basic result and this can become a | |
21ae7a4d JK |
23589 | complaint. |
23590 | ||
23591 | Note that stack[0] is unused except as a default error return. */ | |
c906108c SS |
23592 | |
23593 | static CORE_ADDR | |
e7c27a73 | 23594 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 23595 | { |
518817b3 | 23596 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
56eb65bd SP |
23597 | size_t i; |
23598 | size_t size = blk->size; | |
d521ce57 | 23599 | const gdb_byte *data = blk->data; |
21ae7a4d JK |
23600 | CORE_ADDR stack[64]; |
23601 | int stacki; | |
23602 | unsigned int bytes_read, unsnd; | |
23603 | gdb_byte op; | |
c906108c | 23604 | |
21ae7a4d JK |
23605 | i = 0; |
23606 | stacki = 0; | |
23607 | stack[stacki] = 0; | |
23608 | stack[++stacki] = 0; | |
23609 | ||
23610 | while (i < size) | |
23611 | { | |
23612 | op = data[i++]; | |
23613 | switch (op) | |
23614 | { | |
23615 | case DW_OP_lit0: | |
23616 | case DW_OP_lit1: | |
23617 | case DW_OP_lit2: | |
23618 | case DW_OP_lit3: | |
23619 | case DW_OP_lit4: | |
23620 | case DW_OP_lit5: | |
23621 | case DW_OP_lit6: | |
23622 | case DW_OP_lit7: | |
23623 | case DW_OP_lit8: | |
23624 | case DW_OP_lit9: | |
23625 | case DW_OP_lit10: | |
23626 | case DW_OP_lit11: | |
23627 | case DW_OP_lit12: | |
23628 | case DW_OP_lit13: | |
23629 | case DW_OP_lit14: | |
23630 | case DW_OP_lit15: | |
23631 | case DW_OP_lit16: | |
23632 | case DW_OP_lit17: | |
23633 | case DW_OP_lit18: | |
23634 | case DW_OP_lit19: | |
23635 | case DW_OP_lit20: | |
23636 | case DW_OP_lit21: | |
23637 | case DW_OP_lit22: | |
23638 | case DW_OP_lit23: | |
23639 | case DW_OP_lit24: | |
23640 | case DW_OP_lit25: | |
23641 | case DW_OP_lit26: | |
23642 | case DW_OP_lit27: | |
23643 | case DW_OP_lit28: | |
23644 | case DW_OP_lit29: | |
23645 | case DW_OP_lit30: | |
23646 | case DW_OP_lit31: | |
23647 | stack[++stacki] = op - DW_OP_lit0; | |
23648 | break; | |
f1bea926 | 23649 | |
21ae7a4d JK |
23650 | case DW_OP_reg0: |
23651 | case DW_OP_reg1: | |
23652 | case DW_OP_reg2: | |
23653 | case DW_OP_reg3: | |
23654 | case DW_OP_reg4: | |
23655 | case DW_OP_reg5: | |
23656 | case DW_OP_reg6: | |
23657 | case DW_OP_reg7: | |
23658 | case DW_OP_reg8: | |
23659 | case DW_OP_reg9: | |
23660 | case DW_OP_reg10: | |
23661 | case DW_OP_reg11: | |
23662 | case DW_OP_reg12: | |
23663 | case DW_OP_reg13: | |
23664 | case DW_OP_reg14: | |
23665 | case DW_OP_reg15: | |
23666 | case DW_OP_reg16: | |
23667 | case DW_OP_reg17: | |
23668 | case DW_OP_reg18: | |
23669 | case DW_OP_reg19: | |
23670 | case DW_OP_reg20: | |
23671 | case DW_OP_reg21: | |
23672 | case DW_OP_reg22: | |
23673 | case DW_OP_reg23: | |
23674 | case DW_OP_reg24: | |
23675 | case DW_OP_reg25: | |
23676 | case DW_OP_reg26: | |
23677 | case DW_OP_reg27: | |
23678 | case DW_OP_reg28: | |
23679 | case DW_OP_reg29: | |
23680 | case DW_OP_reg30: | |
23681 | case DW_OP_reg31: | |
23682 | stack[++stacki] = op - DW_OP_reg0; | |
23683 | if (i < size) | |
23684 | dwarf2_complex_location_expr_complaint (); | |
23685 | break; | |
c906108c | 23686 | |
21ae7a4d JK |
23687 | case DW_OP_regx: |
23688 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
23689 | i += bytes_read; | |
23690 | stack[++stacki] = unsnd; | |
23691 | if (i < size) | |
23692 | dwarf2_complex_location_expr_complaint (); | |
23693 | break; | |
c906108c | 23694 | |
21ae7a4d JK |
23695 | case DW_OP_addr: |
23696 | stack[++stacki] = read_address (objfile->obfd, &data[i], | |
23697 | cu, &bytes_read); | |
23698 | i += bytes_read; | |
23699 | break; | |
d53d4ac5 | 23700 | |
21ae7a4d JK |
23701 | case DW_OP_const1u: |
23702 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
23703 | i += 1; | |
23704 | break; | |
23705 | ||
23706 | case DW_OP_const1s: | |
23707 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
23708 | i += 1; | |
23709 | break; | |
23710 | ||
23711 | case DW_OP_const2u: | |
23712 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
23713 | i += 2; | |
23714 | break; | |
23715 | ||
23716 | case DW_OP_const2s: | |
23717 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
23718 | i += 2; | |
23719 | break; | |
d53d4ac5 | 23720 | |
21ae7a4d JK |
23721 | case DW_OP_const4u: |
23722 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
23723 | i += 4; | |
23724 | break; | |
23725 | ||
23726 | case DW_OP_const4s: | |
23727 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
23728 | i += 4; | |
23729 | break; | |
23730 | ||
585861ea JK |
23731 | case DW_OP_const8u: |
23732 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
23733 | i += 8; | |
23734 | break; | |
23735 | ||
21ae7a4d JK |
23736 | case DW_OP_constu: |
23737 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
23738 | &bytes_read); | |
23739 | i += bytes_read; | |
23740 | break; | |
23741 | ||
23742 | case DW_OP_consts: | |
23743 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
23744 | i += bytes_read; | |
23745 | break; | |
23746 | ||
23747 | case DW_OP_dup: | |
23748 | stack[stacki + 1] = stack[stacki]; | |
23749 | stacki++; | |
23750 | break; | |
23751 | ||
23752 | case DW_OP_plus: | |
23753 | stack[stacki - 1] += stack[stacki]; | |
23754 | stacki--; | |
23755 | break; | |
23756 | ||
23757 | case DW_OP_plus_uconst: | |
23758 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
23759 | &bytes_read); | |
23760 | i += bytes_read; | |
23761 | break; | |
23762 | ||
23763 | case DW_OP_minus: | |
23764 | stack[stacki - 1] -= stack[stacki]; | |
23765 | stacki--; | |
23766 | break; | |
23767 | ||
23768 | case DW_OP_deref: | |
23769 | /* If we're not the last op, then we definitely can't encode | |
23770 | this using GDB's address_class enum. This is valid for partial | |
23771 | global symbols, although the variable's address will be bogus | |
23772 | in the psymtab. */ | |
23773 | if (i < size) | |
23774 | dwarf2_complex_location_expr_complaint (); | |
23775 | break; | |
23776 | ||
23777 | case DW_OP_GNU_push_tls_address: | |
4aa4e28b | 23778 | case DW_OP_form_tls_address: |
21ae7a4d JK |
23779 | /* The top of the stack has the offset from the beginning |
23780 | of the thread control block at which the variable is located. */ | |
23781 | /* Nothing should follow this operator, so the top of stack would | |
23782 | be returned. */ | |
23783 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
23784 | address will be bogus in the psymtab. Make it always at least |
23785 | non-zero to not look as a variable garbage collected by linker | |
23786 | which have DW_OP_addr 0. */ | |
21ae7a4d JK |
23787 | if (i < size) |
23788 | dwarf2_complex_location_expr_complaint (); | |
585861ea | 23789 | stack[stacki]++; |
21ae7a4d JK |
23790 | break; |
23791 | ||
23792 | case DW_OP_GNU_uninit: | |
23793 | break; | |
23794 | ||
3019eac3 | 23795 | case DW_OP_GNU_addr_index: |
49f6c839 | 23796 | case DW_OP_GNU_const_index: |
3019eac3 DE |
23797 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
23798 | &bytes_read); | |
23799 | i += bytes_read; | |
23800 | break; | |
23801 | ||
21ae7a4d JK |
23802 | default: |
23803 | { | |
f39c6ffd | 23804 | const char *name = get_DW_OP_name (op); |
21ae7a4d JK |
23805 | |
23806 | if (name) | |
b98664d3 | 23807 | complaint (_("unsupported stack op: '%s'"), |
21ae7a4d JK |
23808 | name); |
23809 | else | |
b98664d3 | 23810 | complaint (_("unsupported stack op: '%02x'"), |
21ae7a4d JK |
23811 | op); |
23812 | } | |
23813 | ||
23814 | return (stack[stacki]); | |
d53d4ac5 | 23815 | } |
3c6e0cb3 | 23816 | |
21ae7a4d JK |
23817 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
23818 | outside of the allocated space. Also enforce minimum>0. */ | |
23819 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
23820 | { | |
b98664d3 | 23821 | complaint (_("location description stack overflow")); |
21ae7a4d JK |
23822 | return 0; |
23823 | } | |
23824 | ||
23825 | if (stacki <= 0) | |
23826 | { | |
b98664d3 | 23827 | complaint (_("location description stack underflow")); |
21ae7a4d JK |
23828 | return 0; |
23829 | } | |
23830 | } | |
23831 | return (stack[stacki]); | |
c906108c SS |
23832 | } |
23833 | ||
23834 | /* memory allocation interface */ | |
23835 | ||
c906108c | 23836 | static struct dwarf_block * |
7b5a2f43 | 23837 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c | 23838 | { |
8d749320 | 23839 | return XOBNEW (&cu->comp_unit_obstack, struct dwarf_block); |
c906108c SS |
23840 | } |
23841 | ||
c906108c | 23842 | static struct die_info * |
b60c80d6 | 23843 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
23844 | { |
23845 | struct die_info *die; | |
b60c80d6 DJ |
23846 | size_t size = sizeof (struct die_info); |
23847 | ||
23848 | if (num_attrs > 1) | |
23849 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 23850 | |
b60c80d6 | 23851 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
23852 | memset (die, 0, sizeof (struct die_info)); |
23853 | return (die); | |
23854 | } | |
2e276125 JB |
23855 | |
23856 | \f | |
23857 | /* Macro support. */ | |
23858 | ||
233d95b5 JK |
23859 | /* Return file name relative to the compilation directory of file number I in |
23860 | *LH's file name table. The result is allocated using xmalloc; the caller is | |
2e276125 | 23861 | responsible for freeing it. */ |
233d95b5 | 23862 | |
2e276125 | 23863 | static char * |
233d95b5 | 23864 | file_file_name (int file, struct line_header *lh) |
2e276125 | 23865 | { |
6a83a1e6 EZ |
23866 | /* Is the file number a valid index into the line header's file name |
23867 | table? Remember that file numbers start with one, not zero. */ | |
fff8551c | 23868 | if (1 <= file && file <= lh->file_names.size ()) |
6a83a1e6 | 23869 | { |
8c43009f | 23870 | const file_entry &fe = lh->file_names[file - 1]; |
6e70227d | 23871 | |
8c43009f PA |
23872 | if (!IS_ABSOLUTE_PATH (fe.name)) |
23873 | { | |
23874 | const char *dir = fe.include_dir (lh); | |
23875 | if (dir != NULL) | |
23876 | return concat (dir, SLASH_STRING, fe.name, (char *) NULL); | |
23877 | } | |
23878 | return xstrdup (fe.name); | |
6a83a1e6 | 23879 | } |
2e276125 JB |
23880 | else |
23881 | { | |
6a83a1e6 EZ |
23882 | /* The compiler produced a bogus file number. We can at least |
23883 | record the macro definitions made in the file, even if we | |
23884 | won't be able to find the file by name. */ | |
23885 | char fake_name[80]; | |
9a619af0 | 23886 | |
8c042590 PM |
23887 | xsnprintf (fake_name, sizeof (fake_name), |
23888 | "<bad macro file number %d>", file); | |
2e276125 | 23889 | |
b98664d3 | 23890 | complaint (_("bad file number in macro information (%d)"), |
6a83a1e6 | 23891 | file); |
2e276125 | 23892 | |
6a83a1e6 | 23893 | return xstrdup (fake_name); |
2e276125 JB |
23894 | } |
23895 | } | |
23896 | ||
233d95b5 JK |
23897 | /* Return the full name of file number I in *LH's file name table. |
23898 | Use COMP_DIR as the name of the current directory of the | |
23899 | compilation. The result is allocated using xmalloc; the caller is | |
23900 | responsible for freeing it. */ | |
23901 | static char * | |
23902 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
23903 | { | |
23904 | /* Is the file number a valid index into the line header's file name | |
23905 | table? Remember that file numbers start with one, not zero. */ | |
fff8551c | 23906 | if (1 <= file && file <= lh->file_names.size ()) |
233d95b5 JK |
23907 | { |
23908 | char *relative = file_file_name (file, lh); | |
23909 | ||
23910 | if (IS_ABSOLUTE_PATH (relative) || comp_dir == NULL) | |
23911 | return relative; | |
b36cec19 PA |
23912 | return reconcat (relative, comp_dir, SLASH_STRING, |
23913 | relative, (char *) NULL); | |
233d95b5 JK |
23914 | } |
23915 | else | |
23916 | return file_file_name (file, lh); | |
23917 | } | |
23918 | ||
2e276125 JB |
23919 | |
23920 | static struct macro_source_file * | |
804d2729 TT |
23921 | macro_start_file (struct dwarf2_cu *cu, |
23922 | int file, int line, | |
2e276125 | 23923 | struct macro_source_file *current_file, |
43f3e411 | 23924 | struct line_header *lh) |
2e276125 | 23925 | { |
233d95b5 JK |
23926 | /* File name relative to the compilation directory of this source file. */ |
23927 | char *file_name = file_file_name (file, lh); | |
2e276125 | 23928 | |
2e276125 | 23929 | if (! current_file) |
abc9d0dc | 23930 | { |
fc474241 DE |
23931 | /* Note: We don't create a macro table for this compilation unit |
23932 | at all until we actually get a filename. */ | |
804d2729 | 23933 | struct macro_table *macro_table = cu->builder->get_macro_table (); |
fc474241 | 23934 | |
abc9d0dc TT |
23935 | /* If we have no current file, then this must be the start_file |
23936 | directive for the compilation unit's main source file. */ | |
fc474241 DE |
23937 | current_file = macro_set_main (macro_table, file_name); |
23938 | macro_define_special (macro_table); | |
abc9d0dc | 23939 | } |
2e276125 | 23940 | else |
233d95b5 | 23941 | current_file = macro_include (current_file, line, file_name); |
2e276125 | 23942 | |
233d95b5 | 23943 | xfree (file_name); |
6e70227d | 23944 | |
2e276125 JB |
23945 | return current_file; |
23946 | } | |
23947 | ||
2e276125 JB |
23948 | static const char * |
23949 | consume_improper_spaces (const char *p, const char *body) | |
23950 | { | |
23951 | if (*p == ' ') | |
23952 | { | |
b98664d3 | 23953 | complaint (_("macro definition contains spaces " |
3e43a32a | 23954 | "in formal argument list:\n`%s'"), |
4d3c2250 | 23955 | body); |
2e276125 JB |
23956 | |
23957 | while (*p == ' ') | |
23958 | p++; | |
23959 | } | |
23960 | ||
23961 | return p; | |
23962 | } | |
23963 | ||
23964 | ||
23965 | static void | |
23966 | parse_macro_definition (struct macro_source_file *file, int line, | |
23967 | const char *body) | |
23968 | { | |
23969 | const char *p; | |
23970 | ||
23971 | /* The body string takes one of two forms. For object-like macro | |
23972 | definitions, it should be: | |
23973 | ||
23974 | <macro name> " " <definition> | |
23975 | ||
23976 | For function-like macro definitions, it should be: | |
23977 | ||
23978 | <macro name> "() " <definition> | |
23979 | or | |
23980 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
23981 | ||
23982 | Spaces may appear only where explicitly indicated, and in the | |
23983 | <definition>. | |
23984 | ||
23985 | The Dwarf 2 spec says that an object-like macro's name is always | |
23986 | followed by a space, but versions of GCC around March 2002 omit | |
6e70227d | 23987 | the space when the macro's definition is the empty string. |
2e276125 JB |
23988 | |
23989 | The Dwarf 2 spec says that there should be no spaces between the | |
23990 | formal arguments in a function-like macro's formal argument list, | |
23991 | but versions of GCC around March 2002 include spaces after the | |
23992 | commas. */ | |
23993 | ||
23994 | ||
23995 | /* Find the extent of the macro name. The macro name is terminated | |
23996 | by either a space or null character (for an object-like macro) or | |
23997 | an opening paren (for a function-like macro). */ | |
23998 | for (p = body; *p; p++) | |
23999 | if (*p == ' ' || *p == '(') | |
24000 | break; | |
24001 | ||
24002 | if (*p == ' ' || *p == '\0') | |
24003 | { | |
24004 | /* It's an object-like macro. */ | |
24005 | int name_len = p - body; | |
3f8a7804 | 24006 | char *name = savestring (body, name_len); |
2e276125 JB |
24007 | const char *replacement; |
24008 | ||
24009 | if (*p == ' ') | |
24010 | replacement = body + name_len + 1; | |
24011 | else | |
24012 | { | |
4d3c2250 | 24013 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
24014 | replacement = body + name_len; |
24015 | } | |
6e70227d | 24016 | |
2e276125 JB |
24017 | macro_define_object (file, line, name, replacement); |
24018 | ||
24019 | xfree (name); | |
24020 | } | |
24021 | else if (*p == '(') | |
24022 | { | |
24023 | /* It's a function-like macro. */ | |
3f8a7804 | 24024 | char *name = savestring (body, p - body); |
2e276125 JB |
24025 | int argc = 0; |
24026 | int argv_size = 1; | |
8d749320 | 24027 | char **argv = XNEWVEC (char *, argv_size); |
2e276125 JB |
24028 | |
24029 | p++; | |
24030 | ||
24031 | p = consume_improper_spaces (p, body); | |
24032 | ||
24033 | /* Parse the formal argument list. */ | |
24034 | while (*p && *p != ')') | |
24035 | { | |
24036 | /* Find the extent of the current argument name. */ | |
24037 | const char *arg_start = p; | |
24038 | ||
24039 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
24040 | p++; | |
24041 | ||
24042 | if (! *p || p == arg_start) | |
4d3c2250 | 24043 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
24044 | else |
24045 | { | |
24046 | /* Make sure argv has room for the new argument. */ | |
24047 | if (argc >= argv_size) | |
24048 | { | |
24049 | argv_size *= 2; | |
224c3ddb | 24050 | argv = XRESIZEVEC (char *, argv, argv_size); |
2e276125 JB |
24051 | } |
24052 | ||
3f8a7804 | 24053 | argv[argc++] = savestring (arg_start, p - arg_start); |
2e276125 JB |
24054 | } |
24055 | ||
24056 | p = consume_improper_spaces (p, body); | |
24057 | ||
24058 | /* Consume the comma, if present. */ | |
24059 | if (*p == ',') | |
24060 | { | |
24061 | p++; | |
24062 | ||
24063 | p = consume_improper_spaces (p, body); | |
24064 | } | |
24065 | } | |
24066 | ||
24067 | if (*p == ')') | |
24068 | { | |
24069 | p++; | |
24070 | ||
24071 | if (*p == ' ') | |
24072 | /* Perfectly formed definition, no complaints. */ | |
24073 | macro_define_function (file, line, name, | |
6e70227d | 24074 | argc, (const char **) argv, |
2e276125 JB |
24075 | p + 1); |
24076 | else if (*p == '\0') | |
24077 | { | |
24078 | /* Complain, but do define it. */ | |
4d3c2250 | 24079 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 | 24080 | macro_define_function (file, line, name, |
6e70227d | 24081 | argc, (const char **) argv, |
2e276125 JB |
24082 | p); |
24083 | } | |
24084 | else | |
24085 | /* Just complain. */ | |
4d3c2250 | 24086 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
24087 | } |
24088 | else | |
24089 | /* Just complain. */ | |
4d3c2250 | 24090 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
24091 | |
24092 | xfree (name); | |
24093 | { | |
24094 | int i; | |
24095 | ||
24096 | for (i = 0; i < argc; i++) | |
24097 | xfree (argv[i]); | |
24098 | } | |
24099 | xfree (argv); | |
24100 | } | |
24101 | else | |
4d3c2250 | 24102 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
24103 | } |
24104 | ||
cf2c3c16 TT |
24105 | /* Skip some bytes from BYTES according to the form given in FORM. |
24106 | Returns the new pointer. */ | |
2e276125 | 24107 | |
d521ce57 TT |
24108 | static const gdb_byte * |
24109 | skip_form_bytes (bfd *abfd, const gdb_byte *bytes, const gdb_byte *buffer_end, | |
cf2c3c16 TT |
24110 | enum dwarf_form form, |
24111 | unsigned int offset_size, | |
24112 | struct dwarf2_section_info *section) | |
2e276125 | 24113 | { |
cf2c3c16 | 24114 | unsigned int bytes_read; |
2e276125 | 24115 | |
cf2c3c16 | 24116 | switch (form) |
2e276125 | 24117 | { |
cf2c3c16 TT |
24118 | case DW_FORM_data1: |
24119 | case DW_FORM_flag: | |
24120 | ++bytes; | |
24121 | break; | |
24122 | ||
24123 | case DW_FORM_data2: | |
24124 | bytes += 2; | |
24125 | break; | |
24126 | ||
24127 | case DW_FORM_data4: | |
24128 | bytes += 4; | |
24129 | break; | |
24130 | ||
24131 | case DW_FORM_data8: | |
24132 | bytes += 8; | |
24133 | break; | |
24134 | ||
0224619f JK |
24135 | case DW_FORM_data16: |
24136 | bytes += 16; | |
24137 | break; | |
24138 | ||
cf2c3c16 TT |
24139 | case DW_FORM_string: |
24140 | read_direct_string (abfd, bytes, &bytes_read); | |
24141 | bytes += bytes_read; | |
24142 | break; | |
24143 | ||
24144 | case DW_FORM_sec_offset: | |
24145 | case DW_FORM_strp: | |
36586728 | 24146 | case DW_FORM_GNU_strp_alt: |
cf2c3c16 TT |
24147 | bytes += offset_size; |
24148 | break; | |
24149 | ||
24150 | case DW_FORM_block: | |
24151 | bytes += read_unsigned_leb128 (abfd, bytes, &bytes_read); | |
24152 | bytes += bytes_read; | |
24153 | break; | |
24154 | ||
24155 | case DW_FORM_block1: | |
24156 | bytes += 1 + read_1_byte (abfd, bytes); | |
24157 | break; | |
24158 | case DW_FORM_block2: | |
24159 | bytes += 2 + read_2_bytes (abfd, bytes); | |
24160 | break; | |
24161 | case DW_FORM_block4: | |
24162 | bytes += 4 + read_4_bytes (abfd, bytes); | |
24163 | break; | |
24164 | ||
24165 | case DW_FORM_sdata: | |
24166 | case DW_FORM_udata: | |
3019eac3 DE |
24167 | case DW_FORM_GNU_addr_index: |
24168 | case DW_FORM_GNU_str_index: | |
d521ce57 | 24169 | bytes = gdb_skip_leb128 (bytes, buffer_end); |
f664829e DE |
24170 | if (bytes == NULL) |
24171 | { | |
24172 | dwarf2_section_buffer_overflow_complaint (section); | |
24173 | return NULL; | |
24174 | } | |
cf2c3c16 TT |
24175 | break; |
24176 | ||
663c44ac JK |
24177 | case DW_FORM_implicit_const: |
24178 | break; | |
24179 | ||
cf2c3c16 TT |
24180 | default: |
24181 | { | |
b98664d3 | 24182 | complaint (_("invalid form 0x%x in `%s'"), |
a32a8923 | 24183 | form, get_section_name (section)); |
cf2c3c16 TT |
24184 | return NULL; |
24185 | } | |
2e276125 JB |
24186 | } |
24187 | ||
cf2c3c16 TT |
24188 | return bytes; |
24189 | } | |
757a13d0 | 24190 | |
cf2c3c16 TT |
24191 | /* A helper for dwarf_decode_macros that handles skipping an unknown |
24192 | opcode. Returns an updated pointer to the macro data buffer; or, | |
24193 | on error, issues a complaint and returns NULL. */ | |
757a13d0 | 24194 | |
d521ce57 | 24195 | static const gdb_byte * |
cf2c3c16 | 24196 | skip_unknown_opcode (unsigned int opcode, |
d521ce57 TT |
24197 | const gdb_byte **opcode_definitions, |
24198 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, | |
cf2c3c16 TT |
24199 | bfd *abfd, |
24200 | unsigned int offset_size, | |
24201 | struct dwarf2_section_info *section) | |
24202 | { | |
24203 | unsigned int bytes_read, i; | |
24204 | unsigned long arg; | |
d521ce57 | 24205 | const gdb_byte *defn; |
2e276125 | 24206 | |
cf2c3c16 | 24207 | if (opcode_definitions[opcode] == NULL) |
2e276125 | 24208 | { |
b98664d3 | 24209 | complaint (_("unrecognized DW_MACFINO opcode 0x%x"), |
cf2c3c16 TT |
24210 | opcode); |
24211 | return NULL; | |
24212 | } | |
2e276125 | 24213 | |
cf2c3c16 TT |
24214 | defn = opcode_definitions[opcode]; |
24215 | arg = read_unsigned_leb128 (abfd, defn, &bytes_read); | |
24216 | defn += bytes_read; | |
2e276125 | 24217 | |
cf2c3c16 TT |
24218 | for (i = 0; i < arg; ++i) |
24219 | { | |
aead7601 SM |
24220 | mac_ptr = skip_form_bytes (abfd, mac_ptr, mac_end, |
24221 | (enum dwarf_form) defn[i], offset_size, | |
f664829e | 24222 | section); |
cf2c3c16 TT |
24223 | if (mac_ptr == NULL) |
24224 | { | |
24225 | /* skip_form_bytes already issued the complaint. */ | |
24226 | return NULL; | |
24227 | } | |
24228 | } | |
757a13d0 | 24229 | |
cf2c3c16 TT |
24230 | return mac_ptr; |
24231 | } | |
757a13d0 | 24232 | |
cf2c3c16 TT |
24233 | /* A helper function which parses the header of a macro section. |
24234 | If the macro section is the extended (for now called "GNU") type, | |
24235 | then this updates *OFFSET_SIZE. Returns a pointer to just after | |
24236 | the header, or issues a complaint and returns NULL on error. */ | |
757a13d0 | 24237 | |
d521ce57 TT |
24238 | static const gdb_byte * |
24239 | dwarf_parse_macro_header (const gdb_byte **opcode_definitions, | |
cf2c3c16 | 24240 | bfd *abfd, |
d521ce57 | 24241 | const gdb_byte *mac_ptr, |
cf2c3c16 TT |
24242 | unsigned int *offset_size, |
24243 | int section_is_gnu) | |
24244 | { | |
24245 | memset (opcode_definitions, 0, 256 * sizeof (gdb_byte *)); | |
757a13d0 | 24246 | |
cf2c3c16 TT |
24247 | if (section_is_gnu) |
24248 | { | |
24249 | unsigned int version, flags; | |
757a13d0 | 24250 | |
cf2c3c16 | 24251 | version = read_2_bytes (abfd, mac_ptr); |
0af92d60 | 24252 | if (version != 4 && version != 5) |
cf2c3c16 | 24253 | { |
b98664d3 | 24254 | complaint (_("unrecognized version `%d' in .debug_macro section"), |
cf2c3c16 TT |
24255 | version); |
24256 | return NULL; | |
24257 | } | |
24258 | mac_ptr += 2; | |
757a13d0 | 24259 | |
cf2c3c16 TT |
24260 | flags = read_1_byte (abfd, mac_ptr); |
24261 | ++mac_ptr; | |
24262 | *offset_size = (flags & 1) ? 8 : 4; | |
757a13d0 | 24263 | |
cf2c3c16 TT |
24264 | if ((flags & 2) != 0) |
24265 | /* We don't need the line table offset. */ | |
24266 | mac_ptr += *offset_size; | |
757a13d0 | 24267 | |
cf2c3c16 TT |
24268 | /* Vendor opcode descriptions. */ |
24269 | if ((flags & 4) != 0) | |
24270 | { | |
24271 | unsigned int i, count; | |
757a13d0 | 24272 | |
cf2c3c16 TT |
24273 | count = read_1_byte (abfd, mac_ptr); |
24274 | ++mac_ptr; | |
24275 | for (i = 0; i < count; ++i) | |
24276 | { | |
24277 | unsigned int opcode, bytes_read; | |
24278 | unsigned long arg; | |
24279 | ||
24280 | opcode = read_1_byte (abfd, mac_ptr); | |
24281 | ++mac_ptr; | |
24282 | opcode_definitions[opcode] = mac_ptr; | |
24283 | arg = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24284 | mac_ptr += bytes_read; | |
24285 | mac_ptr += arg; | |
24286 | } | |
757a13d0 | 24287 | } |
cf2c3c16 | 24288 | } |
757a13d0 | 24289 | |
cf2c3c16 TT |
24290 | return mac_ptr; |
24291 | } | |
757a13d0 | 24292 | |
cf2c3c16 | 24293 | /* A helper for dwarf_decode_macros that handles the GNU extensions, |
0af92d60 | 24294 | including DW_MACRO_import. */ |
cf2c3c16 TT |
24295 | |
24296 | static void | |
804d2729 | 24297 | dwarf_decode_macro_bytes (struct dwarf2_cu *cu, |
ed2dc618 | 24298 | bfd *abfd, |
d521ce57 | 24299 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, |
cf2c3c16 | 24300 | struct macro_source_file *current_file, |
43f3e411 | 24301 | struct line_header *lh, |
cf2c3c16 | 24302 | struct dwarf2_section_info *section, |
36586728 | 24303 | int section_is_gnu, int section_is_dwz, |
cf2c3c16 | 24304 | unsigned int offset_size, |
8fc3fc34 | 24305 | htab_t include_hash) |
cf2c3c16 | 24306 | { |
804d2729 TT |
24307 | struct dwarf2_per_objfile *dwarf2_per_objfile |
24308 | = cu->per_cu->dwarf2_per_objfile; | |
4d663531 | 24309 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
cf2c3c16 TT |
24310 | enum dwarf_macro_record_type macinfo_type; |
24311 | int at_commandline; | |
d521ce57 | 24312 | const gdb_byte *opcode_definitions[256]; |
757a13d0 | 24313 | |
cf2c3c16 TT |
24314 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, |
24315 | &offset_size, section_is_gnu); | |
24316 | if (mac_ptr == NULL) | |
24317 | { | |
24318 | /* We already issued a complaint. */ | |
24319 | return; | |
24320 | } | |
757a13d0 JK |
24321 | |
24322 | /* Determines if GDB is still before first DW_MACINFO_start_file. If true | |
24323 | GDB is still reading the definitions from command line. First | |
24324 | DW_MACINFO_start_file will need to be ignored as it was already executed | |
24325 | to create CURRENT_FILE for the main source holding also the command line | |
24326 | definitions. On first met DW_MACINFO_start_file this flag is reset to | |
24327 | normally execute all the remaining DW_MACINFO_start_file macinfos. */ | |
24328 | ||
24329 | at_commandline = 1; | |
24330 | ||
24331 | do | |
24332 | { | |
24333 | /* Do we at least have room for a macinfo type byte? */ | |
24334 | if (mac_ptr >= mac_end) | |
24335 | { | |
f664829e | 24336 | dwarf2_section_buffer_overflow_complaint (section); |
757a13d0 JK |
24337 | break; |
24338 | } | |
24339 | ||
aead7601 | 24340 | macinfo_type = (enum dwarf_macro_record_type) read_1_byte (abfd, mac_ptr); |
757a13d0 JK |
24341 | mac_ptr++; |
24342 | ||
cf2c3c16 TT |
24343 | /* Note that we rely on the fact that the corresponding GNU and |
24344 | DWARF constants are the same. */ | |
132448f8 SM |
24345 | DIAGNOSTIC_PUSH |
24346 | DIAGNOSTIC_IGNORE_SWITCH_DIFFERENT_ENUM_TYPES | |
757a13d0 JK |
24347 | switch (macinfo_type) |
24348 | { | |
24349 | /* A zero macinfo type indicates the end of the macro | |
24350 | information. */ | |
24351 | case 0: | |
24352 | break; | |
2e276125 | 24353 | |
0af92d60 JK |
24354 | case DW_MACRO_define: |
24355 | case DW_MACRO_undef: | |
24356 | case DW_MACRO_define_strp: | |
24357 | case DW_MACRO_undef_strp: | |
24358 | case DW_MACRO_define_sup: | |
24359 | case DW_MACRO_undef_sup: | |
2e276125 | 24360 | { |
891d2f0b | 24361 | unsigned int bytes_read; |
2e276125 | 24362 | int line; |
d521ce57 | 24363 | const char *body; |
cf2c3c16 | 24364 | int is_define; |
2e276125 | 24365 | |
cf2c3c16 TT |
24366 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
24367 | mac_ptr += bytes_read; | |
24368 | ||
0af92d60 JK |
24369 | if (macinfo_type == DW_MACRO_define |
24370 | || macinfo_type == DW_MACRO_undef) | |
cf2c3c16 TT |
24371 | { |
24372 | body = read_direct_string (abfd, mac_ptr, &bytes_read); | |
24373 | mac_ptr += bytes_read; | |
24374 | } | |
24375 | else | |
24376 | { | |
24377 | LONGEST str_offset; | |
24378 | ||
24379 | str_offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
24380 | mac_ptr += offset_size; | |
2e276125 | 24381 | |
0af92d60 JK |
24382 | if (macinfo_type == DW_MACRO_define_sup |
24383 | || macinfo_type == DW_MACRO_undef_sup | |
f7a35f02 | 24384 | || section_is_dwz) |
36586728 | 24385 | { |
ed2dc618 SM |
24386 | struct dwz_file *dwz |
24387 | = dwarf2_get_dwz_file (dwarf2_per_objfile); | |
36586728 | 24388 | |
ed2dc618 SM |
24389 | body = read_indirect_string_from_dwz (objfile, |
24390 | dwz, str_offset); | |
36586728 TT |
24391 | } |
24392 | else | |
ed2dc618 SM |
24393 | body = read_indirect_string_at_offset (dwarf2_per_objfile, |
24394 | abfd, str_offset); | |
cf2c3c16 TT |
24395 | } |
24396 | ||
0af92d60 JK |
24397 | is_define = (macinfo_type == DW_MACRO_define |
24398 | || macinfo_type == DW_MACRO_define_strp | |
24399 | || macinfo_type == DW_MACRO_define_sup); | |
2e276125 | 24400 | if (! current_file) |
757a13d0 JK |
24401 | { |
24402 | /* DWARF violation as no main source is present. */ | |
b98664d3 | 24403 | complaint (_("debug info with no main source gives macro %s " |
757a13d0 | 24404 | "on line %d: %s"), |
cf2c3c16 TT |
24405 | is_define ? _("definition") : _("undefinition"), |
24406 | line, body); | |
757a13d0 JK |
24407 | break; |
24408 | } | |
3e43a32a MS |
24409 | if ((line == 0 && !at_commandline) |
24410 | || (line != 0 && at_commandline)) | |
b98664d3 | 24411 | complaint (_("debug info gives %s macro %s with %s line %d: %s"), |
757a13d0 | 24412 | at_commandline ? _("command-line") : _("in-file"), |
cf2c3c16 | 24413 | is_define ? _("definition") : _("undefinition"), |
757a13d0 JK |
24414 | line == 0 ? _("zero") : _("non-zero"), line, body); |
24415 | ||
cf2c3c16 | 24416 | if (is_define) |
757a13d0 | 24417 | parse_macro_definition (current_file, line, body); |
cf2c3c16 TT |
24418 | else |
24419 | { | |
0af92d60 JK |
24420 | gdb_assert (macinfo_type == DW_MACRO_undef |
24421 | || macinfo_type == DW_MACRO_undef_strp | |
24422 | || macinfo_type == DW_MACRO_undef_sup); | |
cf2c3c16 TT |
24423 | macro_undef (current_file, line, body); |
24424 | } | |
2e276125 JB |
24425 | } |
24426 | break; | |
24427 | ||
0af92d60 | 24428 | case DW_MACRO_start_file: |
2e276125 | 24429 | { |
891d2f0b | 24430 | unsigned int bytes_read; |
2e276125 JB |
24431 | int line, file; |
24432 | ||
24433 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24434 | mac_ptr += bytes_read; | |
24435 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24436 | mac_ptr += bytes_read; | |
24437 | ||
3e43a32a MS |
24438 | if ((line == 0 && !at_commandline) |
24439 | || (line != 0 && at_commandline)) | |
b98664d3 | 24440 | complaint (_("debug info gives source %d included " |
757a13d0 JK |
24441 | "from %s at %s line %d"), |
24442 | file, at_commandline ? _("command-line") : _("file"), | |
24443 | line == 0 ? _("zero") : _("non-zero"), line); | |
24444 | ||
24445 | if (at_commandline) | |
24446 | { | |
0af92d60 | 24447 | /* This DW_MACRO_start_file was executed in the |
cf2c3c16 | 24448 | pass one. */ |
757a13d0 JK |
24449 | at_commandline = 0; |
24450 | } | |
24451 | else | |
804d2729 TT |
24452 | current_file = macro_start_file (cu, file, line, current_file, |
24453 | lh); | |
2e276125 JB |
24454 | } |
24455 | break; | |
24456 | ||
0af92d60 | 24457 | case DW_MACRO_end_file: |
2e276125 | 24458 | if (! current_file) |
b98664d3 | 24459 | complaint (_("macro debug info has an unmatched " |
3e43a32a | 24460 | "`close_file' directive")); |
2e276125 JB |
24461 | else |
24462 | { | |
24463 | current_file = current_file->included_by; | |
24464 | if (! current_file) | |
24465 | { | |
cf2c3c16 | 24466 | enum dwarf_macro_record_type next_type; |
2e276125 JB |
24467 | |
24468 | /* GCC circa March 2002 doesn't produce the zero | |
24469 | type byte marking the end of the compilation | |
24470 | unit. Complain if it's not there, but exit no | |
24471 | matter what. */ | |
24472 | ||
24473 | /* Do we at least have room for a macinfo type byte? */ | |
24474 | if (mac_ptr >= mac_end) | |
24475 | { | |
f664829e | 24476 | dwarf2_section_buffer_overflow_complaint (section); |
2e276125 JB |
24477 | return; |
24478 | } | |
24479 | ||
24480 | /* We don't increment mac_ptr here, so this is just | |
24481 | a look-ahead. */ | |
aead7601 SM |
24482 | next_type |
24483 | = (enum dwarf_macro_record_type) read_1_byte (abfd, | |
24484 | mac_ptr); | |
2e276125 | 24485 | if (next_type != 0) |
b98664d3 | 24486 | complaint (_("no terminating 0-type entry for " |
3e43a32a | 24487 | "macros in `.debug_macinfo' section")); |
2e276125 JB |
24488 | |
24489 | return; | |
24490 | } | |
24491 | } | |
24492 | break; | |
24493 | ||
0af92d60 JK |
24494 | case DW_MACRO_import: |
24495 | case DW_MACRO_import_sup: | |
cf2c3c16 TT |
24496 | { |
24497 | LONGEST offset; | |
8fc3fc34 | 24498 | void **slot; |
a036ba48 TT |
24499 | bfd *include_bfd = abfd; |
24500 | struct dwarf2_section_info *include_section = section; | |
d521ce57 | 24501 | const gdb_byte *include_mac_end = mac_end; |
a036ba48 | 24502 | int is_dwz = section_is_dwz; |
d521ce57 | 24503 | const gdb_byte *new_mac_ptr; |
cf2c3c16 TT |
24504 | |
24505 | offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
24506 | mac_ptr += offset_size; | |
24507 | ||
0af92d60 | 24508 | if (macinfo_type == DW_MACRO_import_sup) |
a036ba48 | 24509 | { |
ed2dc618 | 24510 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
a036ba48 | 24511 | |
4d663531 | 24512 | dwarf2_read_section (objfile, &dwz->macro); |
a036ba48 | 24513 | |
a036ba48 | 24514 | include_section = &dwz->macro; |
a32a8923 | 24515 | include_bfd = get_section_bfd_owner (include_section); |
a036ba48 TT |
24516 | include_mac_end = dwz->macro.buffer + dwz->macro.size; |
24517 | is_dwz = 1; | |
24518 | } | |
24519 | ||
24520 | new_mac_ptr = include_section->buffer + offset; | |
24521 | slot = htab_find_slot (include_hash, new_mac_ptr, INSERT); | |
24522 | ||
8fc3fc34 TT |
24523 | if (*slot != NULL) |
24524 | { | |
24525 | /* This has actually happened; see | |
24526 | http://sourceware.org/bugzilla/show_bug.cgi?id=13568. */ | |
b98664d3 | 24527 | complaint (_("recursive DW_MACRO_import in " |
8fc3fc34 TT |
24528 | ".debug_macro section")); |
24529 | } | |
24530 | else | |
24531 | { | |
d521ce57 | 24532 | *slot = (void *) new_mac_ptr; |
36586728 | 24533 | |
804d2729 | 24534 | dwarf_decode_macro_bytes (cu, include_bfd, new_mac_ptr, |
43f3e411 | 24535 | include_mac_end, current_file, lh, |
36586728 | 24536 | section, section_is_gnu, is_dwz, |
4d663531 | 24537 | offset_size, include_hash); |
8fc3fc34 | 24538 | |
d521ce57 | 24539 | htab_remove_elt (include_hash, (void *) new_mac_ptr); |
8fc3fc34 | 24540 | } |
cf2c3c16 TT |
24541 | } |
24542 | break; | |
24543 | ||
2e276125 | 24544 | case DW_MACINFO_vendor_ext: |
cf2c3c16 TT |
24545 | if (!section_is_gnu) |
24546 | { | |
24547 | unsigned int bytes_read; | |
2e276125 | 24548 | |
ac298888 TT |
24549 | /* This reads the constant, but since we don't recognize |
24550 | any vendor extensions, we ignore it. */ | |
24551 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
cf2c3c16 TT |
24552 | mac_ptr += bytes_read; |
24553 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
24554 | mac_ptr += bytes_read; | |
2e276125 | 24555 | |
cf2c3c16 TT |
24556 | /* We don't recognize any vendor extensions. */ |
24557 | break; | |
24558 | } | |
24559 | /* FALLTHROUGH */ | |
24560 | ||
24561 | default: | |
24562 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 24563 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
24564 | section); |
24565 | if (mac_ptr == NULL) | |
24566 | return; | |
24567 | break; | |
2e276125 | 24568 | } |
132448f8 | 24569 | DIAGNOSTIC_POP |
757a13d0 | 24570 | } while (macinfo_type != 0); |
2e276125 | 24571 | } |
8e19ed76 | 24572 | |
cf2c3c16 | 24573 | static void |
09262596 | 24574 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, |
43f3e411 | 24575 | int section_is_gnu) |
cf2c3c16 | 24576 | { |
518817b3 SM |
24577 | struct dwarf2_per_objfile *dwarf2_per_objfile |
24578 | = cu->per_cu->dwarf2_per_objfile; | |
bb5ed363 | 24579 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
09262596 DE |
24580 | struct line_header *lh = cu->line_header; |
24581 | bfd *abfd; | |
d521ce57 | 24582 | const gdb_byte *mac_ptr, *mac_end; |
cf2c3c16 TT |
24583 | struct macro_source_file *current_file = 0; |
24584 | enum dwarf_macro_record_type macinfo_type; | |
24585 | unsigned int offset_size = cu->header.offset_size; | |
d521ce57 | 24586 | const gdb_byte *opcode_definitions[256]; |
8fc3fc34 | 24587 | void **slot; |
09262596 DE |
24588 | struct dwarf2_section_info *section; |
24589 | const char *section_name; | |
24590 | ||
24591 | if (cu->dwo_unit != NULL) | |
24592 | { | |
24593 | if (section_is_gnu) | |
24594 | { | |
24595 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
24596 | section_name = ".debug_macro.dwo"; | |
24597 | } | |
24598 | else | |
24599 | { | |
24600 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
24601 | section_name = ".debug_macinfo.dwo"; | |
24602 | } | |
24603 | } | |
24604 | else | |
24605 | { | |
24606 | if (section_is_gnu) | |
24607 | { | |
24608 | section = &dwarf2_per_objfile->macro; | |
24609 | section_name = ".debug_macro"; | |
24610 | } | |
24611 | else | |
24612 | { | |
24613 | section = &dwarf2_per_objfile->macinfo; | |
24614 | section_name = ".debug_macinfo"; | |
24615 | } | |
24616 | } | |
cf2c3c16 | 24617 | |
bb5ed363 | 24618 | dwarf2_read_section (objfile, section); |
cf2c3c16 TT |
24619 | if (section->buffer == NULL) |
24620 | { | |
b98664d3 | 24621 | complaint (_("missing %s section"), section_name); |
cf2c3c16 TT |
24622 | return; |
24623 | } | |
a32a8923 | 24624 | abfd = get_section_bfd_owner (section); |
cf2c3c16 TT |
24625 | |
24626 | /* First pass: Find the name of the base filename. | |
24627 | This filename is needed in order to process all macros whose definition | |
24628 | (or undefinition) comes from the command line. These macros are defined | |
24629 | before the first DW_MACINFO_start_file entry, and yet still need to be | |
24630 | associated to the base file. | |
24631 | ||
24632 | To determine the base file name, we scan the macro definitions until we | |
24633 | reach the first DW_MACINFO_start_file entry. We then initialize | |
24634 | CURRENT_FILE accordingly so that any macro definition found before the | |
24635 | first DW_MACINFO_start_file can still be associated to the base file. */ | |
24636 | ||
24637 | mac_ptr = section->buffer + offset; | |
24638 | mac_end = section->buffer + section->size; | |
24639 | ||
24640 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, | |
24641 | &offset_size, section_is_gnu); | |
24642 | if (mac_ptr == NULL) | |
24643 | { | |
24644 | /* We already issued a complaint. */ | |
24645 | return; | |
24646 | } | |
24647 | ||
24648 | do | |
24649 | { | |
24650 | /* Do we at least have room for a macinfo type byte? */ | |
24651 | if (mac_ptr >= mac_end) | |
24652 | { | |
24653 | /* Complaint is printed during the second pass as GDB will probably | |
24654 | stop the first pass earlier upon finding | |
24655 | DW_MACINFO_start_file. */ | |
24656 | break; | |
24657 | } | |
24658 | ||
aead7601 | 24659 | macinfo_type = (enum dwarf_macro_record_type) read_1_byte (abfd, mac_ptr); |
cf2c3c16 TT |
24660 | mac_ptr++; |
24661 | ||
24662 | /* Note that we rely on the fact that the corresponding GNU and | |
24663 | DWARF constants are the same. */ | |
132448f8 SM |
24664 | DIAGNOSTIC_PUSH |
24665 | DIAGNOSTIC_IGNORE_SWITCH_DIFFERENT_ENUM_TYPES | |
cf2c3c16 TT |
24666 | switch (macinfo_type) |
24667 | { | |
24668 | /* A zero macinfo type indicates the end of the macro | |
24669 | information. */ | |
24670 | case 0: | |
24671 | break; | |
24672 | ||
0af92d60 JK |
24673 | case DW_MACRO_define: |
24674 | case DW_MACRO_undef: | |
cf2c3c16 TT |
24675 | /* Only skip the data by MAC_PTR. */ |
24676 | { | |
24677 | unsigned int bytes_read; | |
24678 | ||
24679 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24680 | mac_ptr += bytes_read; | |
24681 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
24682 | mac_ptr += bytes_read; | |
24683 | } | |
24684 | break; | |
24685 | ||
0af92d60 | 24686 | case DW_MACRO_start_file: |
cf2c3c16 TT |
24687 | { |
24688 | unsigned int bytes_read; | |
24689 | int line, file; | |
24690 | ||
24691 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24692 | mac_ptr += bytes_read; | |
24693 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24694 | mac_ptr += bytes_read; | |
24695 | ||
804d2729 | 24696 | current_file = macro_start_file (cu, file, line, current_file, lh); |
cf2c3c16 TT |
24697 | } |
24698 | break; | |
24699 | ||
0af92d60 | 24700 | case DW_MACRO_end_file: |
cf2c3c16 TT |
24701 | /* No data to skip by MAC_PTR. */ |
24702 | break; | |
24703 | ||
0af92d60 JK |
24704 | case DW_MACRO_define_strp: |
24705 | case DW_MACRO_undef_strp: | |
24706 | case DW_MACRO_define_sup: | |
24707 | case DW_MACRO_undef_sup: | |
cf2c3c16 TT |
24708 | { |
24709 | unsigned int bytes_read; | |
24710 | ||
24711 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24712 | mac_ptr += bytes_read; | |
24713 | mac_ptr += offset_size; | |
24714 | } | |
24715 | break; | |
24716 | ||
0af92d60 JK |
24717 | case DW_MACRO_import: |
24718 | case DW_MACRO_import_sup: | |
cf2c3c16 | 24719 | /* Note that, according to the spec, a transparent include |
0af92d60 | 24720 | chain cannot call DW_MACRO_start_file. So, we can just |
cf2c3c16 TT |
24721 | skip this opcode. */ |
24722 | mac_ptr += offset_size; | |
24723 | break; | |
24724 | ||
24725 | case DW_MACINFO_vendor_ext: | |
24726 | /* Only skip the data by MAC_PTR. */ | |
24727 | if (!section_is_gnu) | |
24728 | { | |
24729 | unsigned int bytes_read; | |
24730 | ||
24731 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24732 | mac_ptr += bytes_read; | |
24733 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
24734 | mac_ptr += bytes_read; | |
24735 | } | |
24736 | /* FALLTHROUGH */ | |
24737 | ||
24738 | default: | |
24739 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 24740 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
24741 | section); |
24742 | if (mac_ptr == NULL) | |
24743 | return; | |
24744 | break; | |
24745 | } | |
132448f8 | 24746 | DIAGNOSTIC_POP |
cf2c3c16 TT |
24747 | } while (macinfo_type != 0 && current_file == NULL); |
24748 | ||
24749 | /* Second pass: Process all entries. | |
24750 | ||
24751 | Use the AT_COMMAND_LINE flag to determine whether we are still processing | |
24752 | command-line macro definitions/undefinitions. This flag is unset when we | |
24753 | reach the first DW_MACINFO_start_file entry. */ | |
24754 | ||
fc4007c9 TT |
24755 | htab_up include_hash (htab_create_alloc (1, htab_hash_pointer, |
24756 | htab_eq_pointer, | |
24757 | NULL, xcalloc, xfree)); | |
8fc3fc34 | 24758 | mac_ptr = section->buffer + offset; |
fc4007c9 | 24759 | slot = htab_find_slot (include_hash.get (), mac_ptr, INSERT); |
d521ce57 | 24760 | *slot = (void *) mac_ptr; |
804d2729 | 24761 | dwarf_decode_macro_bytes (cu, abfd, mac_ptr, mac_end, |
43f3e411 | 24762 | current_file, lh, section, |
fc4007c9 TT |
24763 | section_is_gnu, 0, offset_size, |
24764 | include_hash.get ()); | |
cf2c3c16 TT |
24765 | } |
24766 | ||
8e19ed76 | 24767 | /* Check if the attribute's form is a DW_FORM_block* |
0963b4bd | 24768 | if so return true else false. */ |
380bca97 | 24769 | |
8e19ed76 | 24770 | static int |
6e5a29e1 | 24771 | attr_form_is_block (const struct attribute *attr) |
8e19ed76 PS |
24772 | { |
24773 | return (attr == NULL ? 0 : | |
24774 | attr->form == DW_FORM_block1 | |
24775 | || attr->form == DW_FORM_block2 | |
24776 | || attr->form == DW_FORM_block4 | |
2dc7f7b3 TT |
24777 | || attr->form == DW_FORM_block |
24778 | || attr->form == DW_FORM_exprloc); | |
8e19ed76 | 24779 | } |
4c2df51b | 24780 | |
c6a0999f JB |
24781 | /* Return non-zero if ATTR's value is a section offset --- classes |
24782 | lineptr, loclistptr, macptr or rangelistptr --- or zero, otherwise. | |
24783 | You may use DW_UNSND (attr) to retrieve such offsets. | |
24784 | ||
24785 | Section 7.5.4, "Attribute Encodings", explains that no attribute | |
24786 | may have a value that belongs to more than one of these classes; it | |
24787 | would be ambiguous if we did, because we use the same forms for all | |
24788 | of them. */ | |
380bca97 | 24789 | |
3690dd37 | 24790 | static int |
6e5a29e1 | 24791 | attr_form_is_section_offset (const struct attribute *attr) |
3690dd37 JB |
24792 | { |
24793 | return (attr->form == DW_FORM_data4 | |
2dc7f7b3 TT |
24794 | || attr->form == DW_FORM_data8 |
24795 | || attr->form == DW_FORM_sec_offset); | |
3690dd37 JB |
24796 | } |
24797 | ||
3690dd37 JB |
24798 | /* Return non-zero if ATTR's value falls in the 'constant' class, or |
24799 | zero otherwise. When this function returns true, you can apply | |
24800 | dwarf2_get_attr_constant_value to it. | |
24801 | ||
24802 | However, note that for some attributes you must check | |
24803 | attr_form_is_section_offset before using this test. DW_FORM_data4 | |
24804 | and DW_FORM_data8 are members of both the constant class, and of | |
24805 | the classes that contain offsets into other debug sections | |
24806 | (lineptr, loclistptr, macptr or rangelistptr). The DWARF spec says | |
24807 | that, if an attribute's can be either a constant or one of the | |
24808 | section offset classes, DW_FORM_data4 and DW_FORM_data8 should be | |
0224619f JK |
24809 | taken as section offsets, not constants. |
24810 | ||
24811 | DW_FORM_data16 is not considered as dwarf2_get_attr_constant_value | |
24812 | cannot handle that. */ | |
380bca97 | 24813 | |
3690dd37 | 24814 | static int |
6e5a29e1 | 24815 | attr_form_is_constant (const struct attribute *attr) |
3690dd37 JB |
24816 | { |
24817 | switch (attr->form) | |
24818 | { | |
24819 | case DW_FORM_sdata: | |
24820 | case DW_FORM_udata: | |
24821 | case DW_FORM_data1: | |
24822 | case DW_FORM_data2: | |
24823 | case DW_FORM_data4: | |
24824 | case DW_FORM_data8: | |
663c44ac | 24825 | case DW_FORM_implicit_const: |
3690dd37 JB |
24826 | return 1; |
24827 | default: | |
24828 | return 0; | |
24829 | } | |
24830 | } | |
24831 | ||
7771576e SA |
24832 | |
24833 | /* DW_ADDR is always stored already as sect_offset; despite for the forms | |
24834 | besides DW_FORM_ref_addr it is stored as cu_offset in the DWARF file. */ | |
24835 | ||
24836 | static int | |
6e5a29e1 | 24837 | attr_form_is_ref (const struct attribute *attr) |
7771576e SA |
24838 | { |
24839 | switch (attr->form) | |
24840 | { | |
24841 | case DW_FORM_ref_addr: | |
24842 | case DW_FORM_ref1: | |
24843 | case DW_FORM_ref2: | |
24844 | case DW_FORM_ref4: | |
24845 | case DW_FORM_ref8: | |
24846 | case DW_FORM_ref_udata: | |
24847 | case DW_FORM_GNU_ref_alt: | |
24848 | return 1; | |
24849 | default: | |
24850 | return 0; | |
24851 | } | |
24852 | } | |
24853 | ||
3019eac3 DE |
24854 | /* Return the .debug_loc section to use for CU. |
24855 | For DWO files use .debug_loc.dwo. */ | |
24856 | ||
24857 | static struct dwarf2_section_info * | |
24858 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
24859 | { | |
518817b3 SM |
24860 | struct dwarf2_per_objfile *dwarf2_per_objfile |
24861 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 24862 | |
3019eac3 | 24863 | if (cu->dwo_unit) |
43988095 JK |
24864 | { |
24865 | struct dwo_sections *sections = &cu->dwo_unit->dwo_file->sections; | |
24866 | ||
24867 | return cu->header.version >= 5 ? §ions->loclists : §ions->loc; | |
24868 | } | |
24869 | return (cu->header.version >= 5 ? &dwarf2_per_objfile->loclists | |
24870 | : &dwarf2_per_objfile->loc); | |
3019eac3 DE |
24871 | } |
24872 | ||
8cf6f0b1 TT |
24873 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
24874 | ||
24875 | static void | |
24876 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
24877 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 24878 | const struct attribute *attr) |
8cf6f0b1 | 24879 | { |
518817b3 SM |
24880 | struct dwarf2_per_objfile *dwarf2_per_objfile |
24881 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 DE |
24882 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
24883 | ||
24884 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
8cf6f0b1 TT |
24885 | |
24886 | baton->per_cu = cu->per_cu; | |
24887 | gdb_assert (baton->per_cu); | |
24888 | /* We don't know how long the location list is, but make sure we | |
24889 | don't run off the edge of the section. */ | |
3019eac3 DE |
24890 | baton->size = section->size - DW_UNSND (attr); |
24891 | baton->data = section->buffer + DW_UNSND (attr); | |
8cf6f0b1 | 24892 | baton->base_address = cu->base_address; |
f664829e | 24893 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
24894 | } |
24895 | ||
4c2df51b | 24896 | static void |
ff39bb5e | 24897 | dwarf2_symbol_mark_computed (const struct attribute *attr, struct symbol *sym, |
f1e6e072 | 24898 | struct dwarf2_cu *cu, int is_block) |
4c2df51b | 24899 | { |
518817b3 SM |
24900 | struct dwarf2_per_objfile *dwarf2_per_objfile |
24901 | = cu->per_cu->dwarf2_per_objfile; | |
bb5ed363 | 24902 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 | 24903 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 24904 | |
3690dd37 | 24905 | if (attr_form_is_section_offset (attr) |
3019eac3 | 24906 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
24907 | the section. If so, fall through to the complaint in the |
24908 | other branch. */ | |
3019eac3 | 24909 | && DW_UNSND (attr) < dwarf2_section_size (objfile, section)) |
4c2df51b | 24910 | { |
0d53c4c4 | 24911 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 24912 | |
8d749320 | 24913 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_loclist_baton); |
4c2df51b | 24914 | |
8cf6f0b1 | 24915 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 24916 | |
d00adf39 | 24917 | if (cu->base_known == 0) |
b98664d3 | 24918 | complaint (_("Location list used without " |
3e43a32a | 24919 | "specifying the CU base address.")); |
4c2df51b | 24920 | |
f1e6e072 TT |
24921 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
24922 | ? dwarf2_loclist_block_index | |
24923 | : dwarf2_loclist_index); | |
0d53c4c4 DJ |
24924 | SYMBOL_LOCATION_BATON (sym) = baton; |
24925 | } | |
24926 | else | |
24927 | { | |
24928 | struct dwarf2_locexpr_baton *baton; | |
24929 | ||
8d749320 | 24930 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
ae0d2f24 UW |
24931 | baton->per_cu = cu->per_cu; |
24932 | gdb_assert (baton->per_cu); | |
0d53c4c4 DJ |
24933 | |
24934 | if (attr_form_is_block (attr)) | |
24935 | { | |
24936 | /* Note that we're just copying the block's data pointer | |
24937 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
24938 | info_buffer for SYM's objfile; right now we never release |
24939 | that buffer, but when we do clean up properly this may | |
24940 | need to change. */ | |
0d53c4c4 DJ |
24941 | baton->size = DW_BLOCK (attr)->size; |
24942 | baton->data = DW_BLOCK (attr)->data; | |
24943 | } | |
24944 | else | |
24945 | { | |
24946 | dwarf2_invalid_attrib_class_complaint ("location description", | |
24947 | SYMBOL_NATURAL_NAME (sym)); | |
24948 | baton->size = 0; | |
0d53c4c4 | 24949 | } |
6e70227d | 24950 | |
f1e6e072 TT |
24951 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
24952 | ? dwarf2_locexpr_block_index | |
24953 | : dwarf2_locexpr_index); | |
0d53c4c4 DJ |
24954 | SYMBOL_LOCATION_BATON (sym) = baton; |
24955 | } | |
4c2df51b | 24956 | } |
6502dd73 | 24957 | |
9aa1f1e3 TT |
24958 | /* Return the OBJFILE associated with the compilation unit CU. If CU |
24959 | came from a separate debuginfo file, then the master objfile is | |
24960 | returned. */ | |
ae0d2f24 UW |
24961 | |
24962 | struct objfile * | |
24963 | dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *per_cu) | |
24964 | { | |
e3b94546 | 24965 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
ae0d2f24 UW |
24966 | |
24967 | /* Return the master objfile, so that we can report and look up the | |
24968 | correct file containing this variable. */ | |
24969 | if (objfile->separate_debug_objfile_backlink) | |
24970 | objfile = objfile->separate_debug_objfile_backlink; | |
24971 | ||
24972 | return objfile; | |
24973 | } | |
24974 | ||
96408a79 SA |
24975 | /* Return comp_unit_head for PER_CU, either already available in PER_CU->CU |
24976 | (CU_HEADERP is unused in such case) or prepare a temporary copy at | |
24977 | CU_HEADERP first. */ | |
24978 | ||
24979 | static const struct comp_unit_head * | |
24980 | per_cu_header_read_in (struct comp_unit_head *cu_headerp, | |
24981 | struct dwarf2_per_cu_data *per_cu) | |
24982 | { | |
d521ce57 | 24983 | const gdb_byte *info_ptr; |
96408a79 SA |
24984 | |
24985 | if (per_cu->cu) | |
24986 | return &per_cu->cu->header; | |
24987 | ||
9c541725 | 24988 | info_ptr = per_cu->section->buffer + to_underlying (per_cu->sect_off); |
96408a79 SA |
24989 | |
24990 | memset (cu_headerp, 0, sizeof (*cu_headerp)); | |
43988095 JK |
24991 | read_comp_unit_head (cu_headerp, info_ptr, per_cu->section, |
24992 | rcuh_kind::COMPILE); | |
96408a79 SA |
24993 | |
24994 | return cu_headerp; | |
24995 | } | |
24996 | ||
ae0d2f24 UW |
24997 | /* Return the address size given in the compilation unit header for CU. */ |
24998 | ||
98714339 | 24999 | int |
ae0d2f24 UW |
25000 | dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *per_cu) |
25001 | { | |
96408a79 SA |
25002 | struct comp_unit_head cu_header_local; |
25003 | const struct comp_unit_head *cu_headerp; | |
c471e790 | 25004 | |
96408a79 SA |
25005 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
25006 | ||
25007 | return cu_headerp->addr_size; | |
ae0d2f24 UW |
25008 | } |
25009 | ||
9eae7c52 TT |
25010 | /* Return the offset size given in the compilation unit header for CU. */ |
25011 | ||
25012 | int | |
25013 | dwarf2_per_cu_offset_size (struct dwarf2_per_cu_data *per_cu) | |
25014 | { | |
96408a79 SA |
25015 | struct comp_unit_head cu_header_local; |
25016 | const struct comp_unit_head *cu_headerp; | |
9c6c53f7 | 25017 | |
96408a79 SA |
25018 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
25019 | ||
25020 | return cu_headerp->offset_size; | |
25021 | } | |
25022 | ||
25023 | /* See its dwarf2loc.h declaration. */ | |
25024 | ||
25025 | int | |
25026 | dwarf2_per_cu_ref_addr_size (struct dwarf2_per_cu_data *per_cu) | |
25027 | { | |
25028 | struct comp_unit_head cu_header_local; | |
25029 | const struct comp_unit_head *cu_headerp; | |
25030 | ||
25031 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); | |
25032 | ||
25033 | if (cu_headerp->version == 2) | |
25034 | return cu_headerp->addr_size; | |
25035 | else | |
25036 | return cu_headerp->offset_size; | |
181cebd4 JK |
25037 | } |
25038 | ||
9aa1f1e3 TT |
25039 | /* Return the text offset of the CU. The returned offset comes from |
25040 | this CU's objfile. If this objfile came from a separate debuginfo | |
25041 | file, then the offset may be different from the corresponding | |
25042 | offset in the parent objfile. */ | |
25043 | ||
25044 | CORE_ADDR | |
25045 | dwarf2_per_cu_text_offset (struct dwarf2_per_cu_data *per_cu) | |
25046 | { | |
e3b94546 | 25047 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
9aa1f1e3 TT |
25048 | |
25049 | return ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
25050 | } | |
25051 | ||
43988095 JK |
25052 | /* Return DWARF version number of PER_CU. */ |
25053 | ||
25054 | short | |
25055 | dwarf2_version (struct dwarf2_per_cu_data *per_cu) | |
25056 | { | |
25057 | return per_cu->dwarf_version; | |
25058 | } | |
25059 | ||
348e048f DE |
25060 | /* Locate the .debug_info compilation unit from CU's objfile which contains |
25061 | the DIE at OFFSET. Raises an error on failure. */ | |
ae038cb0 DJ |
25062 | |
25063 | static struct dwarf2_per_cu_data * | |
9c541725 | 25064 | dwarf2_find_containing_comp_unit (sect_offset sect_off, |
36586728 | 25065 | unsigned int offset_in_dwz, |
ed2dc618 | 25066 | struct dwarf2_per_objfile *dwarf2_per_objfile) |
ae038cb0 DJ |
25067 | { |
25068 | struct dwarf2_per_cu_data *this_cu; | |
25069 | int low, high; | |
36586728 | 25070 | const sect_offset *cu_off; |
ae038cb0 | 25071 | |
ae038cb0 | 25072 | low = 0; |
b76e467d | 25073 | high = dwarf2_per_objfile->all_comp_units.size () - 1; |
ae038cb0 DJ |
25074 | while (high > low) |
25075 | { | |
36586728 | 25076 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 25077 | int mid = low + (high - low) / 2; |
9a619af0 | 25078 | |
36586728 | 25079 | mid_cu = dwarf2_per_objfile->all_comp_units[mid]; |
9c541725 | 25080 | cu_off = &mid_cu->sect_off; |
36586728 | 25081 | if (mid_cu->is_dwz > offset_in_dwz |
9c541725 | 25082 | || (mid_cu->is_dwz == offset_in_dwz && *cu_off >= sect_off)) |
ae038cb0 DJ |
25083 | high = mid; |
25084 | else | |
25085 | low = mid + 1; | |
25086 | } | |
25087 | gdb_assert (low == high); | |
36586728 | 25088 | this_cu = dwarf2_per_objfile->all_comp_units[low]; |
9c541725 PA |
25089 | cu_off = &this_cu->sect_off; |
25090 | if (this_cu->is_dwz != offset_in_dwz || *cu_off > sect_off) | |
ae038cb0 | 25091 | { |
36586728 | 25092 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 | 25093 | error (_("Dwarf Error: could not find partial DIE containing " |
9d8780f0 SM |
25094 | "offset %s [in module %s]"), |
25095 | sect_offset_str (sect_off), | |
ed2dc618 | 25096 | bfd_get_filename (dwarf2_per_objfile->objfile->obfd)); |
10b3939b | 25097 | |
9c541725 PA |
25098 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->sect_off |
25099 | <= sect_off); | |
ae038cb0 DJ |
25100 | return dwarf2_per_objfile->all_comp_units[low-1]; |
25101 | } | |
25102 | else | |
25103 | { | |
25104 | this_cu = dwarf2_per_objfile->all_comp_units[low]; | |
b76e467d | 25105 | if (low == dwarf2_per_objfile->all_comp_units.size () - 1 |
9c541725 | 25106 | && sect_off >= this_cu->sect_off + this_cu->length) |
9d8780f0 | 25107 | error (_("invalid dwarf2 offset %s"), sect_offset_str (sect_off)); |
9c541725 | 25108 | gdb_assert (sect_off < this_cu->sect_off + this_cu->length); |
ae038cb0 DJ |
25109 | return this_cu; |
25110 | } | |
25111 | } | |
25112 | ||
23745b47 | 25113 | /* Initialize dwarf2_cu CU, owned by PER_CU. */ |
93311388 | 25114 | |
fcd3b13d SM |
25115 | dwarf2_cu::dwarf2_cu (struct dwarf2_per_cu_data *per_cu_) |
25116 | : per_cu (per_cu_), | |
25117 | mark (0), | |
25118 | has_loclist (0), | |
25119 | checked_producer (0), | |
25120 | producer_is_gxx_lt_4_6 (0), | |
25121 | producer_is_gcc_lt_4_3 (0), | |
25122 | producer_is_icc_lt_14 (0), | |
25123 | processing_has_namespace_info (0) | |
93311388 | 25124 | { |
fcd3b13d SM |
25125 | per_cu->cu = this; |
25126 | } | |
25127 | ||
25128 | /* Destroy a dwarf2_cu. */ | |
25129 | ||
25130 | dwarf2_cu::~dwarf2_cu () | |
25131 | { | |
25132 | per_cu->cu = NULL; | |
9816fde3 JK |
25133 | } |
25134 | ||
25135 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
25136 | ||
25137 | static void | |
95554aad TT |
25138 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
25139 | enum language pretend_language) | |
9816fde3 JK |
25140 | { |
25141 | struct attribute *attr; | |
25142 | ||
25143 | /* Set the language we're debugging. */ | |
25144 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
25145 | if (attr) | |
25146 | set_cu_language (DW_UNSND (attr), cu); | |
25147 | else | |
9cded63f | 25148 | { |
95554aad | 25149 | cu->language = pretend_language; |
9cded63f TT |
25150 | cu->language_defn = language_def (cu->language); |
25151 | } | |
dee91e82 | 25152 | |
7d45c7c3 | 25153 | cu->producer = dwarf2_string_attr (comp_unit_die, DW_AT_producer, cu); |
93311388 DE |
25154 | } |
25155 | ||
ae038cb0 DJ |
25156 | /* Increase the age counter on each cached compilation unit, and free |
25157 | any that are too old. */ | |
25158 | ||
25159 | static void | |
ed2dc618 | 25160 | age_cached_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
ae038cb0 DJ |
25161 | { |
25162 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
25163 | ||
25164 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
25165 | per_cu = dwarf2_per_objfile->read_in_chain; | |
25166 | while (per_cu != NULL) | |
25167 | { | |
25168 | per_cu->cu->last_used ++; | |
b4f54984 | 25169 | if (per_cu->cu->last_used <= dwarf_max_cache_age) |
ae038cb0 DJ |
25170 | dwarf2_mark (per_cu->cu); |
25171 | per_cu = per_cu->cu->read_in_chain; | |
25172 | } | |
25173 | ||
25174 | per_cu = dwarf2_per_objfile->read_in_chain; | |
25175 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
25176 | while (per_cu != NULL) | |
25177 | { | |
25178 | struct dwarf2_per_cu_data *next_cu; | |
25179 | ||
25180 | next_cu = per_cu->cu->read_in_chain; | |
25181 | ||
25182 | if (!per_cu->cu->mark) | |
25183 | { | |
fcd3b13d | 25184 | delete per_cu->cu; |
ae038cb0 DJ |
25185 | *last_chain = next_cu; |
25186 | } | |
25187 | else | |
25188 | last_chain = &per_cu->cu->read_in_chain; | |
25189 | ||
25190 | per_cu = next_cu; | |
25191 | } | |
25192 | } | |
25193 | ||
25194 | /* Remove a single compilation unit from the cache. */ | |
25195 | ||
25196 | static void | |
dee91e82 | 25197 | free_one_cached_comp_unit (struct dwarf2_per_cu_data *target_per_cu) |
ae038cb0 DJ |
25198 | { |
25199 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
ed2dc618 SM |
25200 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25201 | = target_per_cu->dwarf2_per_objfile; | |
ae038cb0 DJ |
25202 | |
25203 | per_cu = dwarf2_per_objfile->read_in_chain; | |
25204 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
25205 | while (per_cu != NULL) | |
25206 | { | |
25207 | struct dwarf2_per_cu_data *next_cu; | |
25208 | ||
25209 | next_cu = per_cu->cu->read_in_chain; | |
25210 | ||
dee91e82 | 25211 | if (per_cu == target_per_cu) |
ae038cb0 | 25212 | { |
fcd3b13d | 25213 | delete per_cu->cu; |
dee91e82 | 25214 | per_cu->cu = NULL; |
ae038cb0 DJ |
25215 | *last_chain = next_cu; |
25216 | break; | |
25217 | } | |
25218 | else | |
25219 | last_chain = &per_cu->cu->read_in_chain; | |
25220 | ||
25221 | per_cu = next_cu; | |
25222 | } | |
25223 | } | |
25224 | ||
d95d3aef | 25225 | /* Cleanup function for the dwarf2_per_objfile data. */ |
fe3e1990 | 25226 | |
d95d3aef TT |
25227 | static void |
25228 | dwarf2_free_objfile (struct objfile *objfile, void *datum) | |
fe3e1990 | 25229 | { |
ed2dc618 | 25230 | struct dwarf2_per_objfile *dwarf2_per_objfile |
d95d3aef | 25231 | = static_cast<struct dwarf2_per_objfile *> (datum); |
fe3e1990 | 25232 | |
fd90ace4 | 25233 | delete dwarf2_per_objfile; |
fe3e1990 DJ |
25234 | } |
25235 | ||
dee91e82 DE |
25236 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
25237 | We store these in a hash table separate from the DIEs, and preserve them | |
25238 | when the DIEs are flushed out of cache. | |
25239 | ||
25240 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 | 25241 | uniquely identify the type. A file may have multiple .debug_types sections, |
c88ee1f0 DE |
25242 | or the type may come from a DWO file. Furthermore, while it's more logical |
25243 | to use per_cu->section+offset, with Fission the section with the data is in | |
25244 | the DWO file but we don't know that section at the point we need it. | |
25245 | We have to use something in dwarf2_per_cu_data (or the pointer to it) | |
25246 | because we can enter the lookup routine, get_die_type_at_offset, from | |
25247 | outside this file, and thus won't necessarily have PER_CU->cu. | |
25248 | Fortunately, PER_CU is stable for the life of the objfile. */ | |
1c379e20 | 25249 | |
dee91e82 | 25250 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 25251 | { |
dee91e82 | 25252 | const struct dwarf2_per_cu_data *per_cu; |
9c541725 | 25253 | sect_offset sect_off; |
1c379e20 DJ |
25254 | struct type *type; |
25255 | }; | |
25256 | ||
dee91e82 | 25257 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
25258 | |
25259 | static hashval_t | |
dee91e82 | 25260 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 25261 | { |
9a3c8263 SM |
25262 | const struct dwarf2_per_cu_offset_and_type *ofs |
25263 | = (const struct dwarf2_per_cu_offset_and_type *) item; | |
9a619af0 | 25264 | |
9c541725 | 25265 | return (uintptr_t) ofs->per_cu + to_underlying (ofs->sect_off); |
1c379e20 DJ |
25266 | } |
25267 | ||
dee91e82 | 25268 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
25269 | |
25270 | static int | |
dee91e82 | 25271 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 25272 | { |
9a3c8263 SM |
25273 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs |
25274 | = (const struct dwarf2_per_cu_offset_and_type *) item_lhs; | |
25275 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs | |
25276 | = (const struct dwarf2_per_cu_offset_and_type *) item_rhs; | |
9a619af0 | 25277 | |
dee91e82 | 25278 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
9c541725 | 25279 | && ofs_lhs->sect_off == ofs_rhs->sect_off); |
1c379e20 DJ |
25280 | } |
25281 | ||
25282 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
25283 | table if necessary. For convenience, return TYPE. |
25284 | ||
25285 | The DIEs reading must have careful ordering to: | |
25286 | * Not cause infite loops trying to read in DIEs as a prerequisite for | |
25287 | reading current DIE. | |
25288 | * Not trying to dereference contents of still incompletely read in types | |
25289 | while reading in other DIEs. | |
25290 | * Enable referencing still incompletely read in types just by a pointer to | |
25291 | the type without accessing its fields. | |
25292 | ||
25293 | Therefore caller should follow these rules: | |
25294 | * Try to fetch any prerequisite types we may need to build this DIE type | |
25295 | before building the type and calling set_die_type. | |
e71ec853 | 25296 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
25297 | possible before fetching more types to complete the current type. |
25298 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 25299 | |
f792889a | 25300 | static struct type * |
1c379e20 DJ |
25301 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
25302 | { | |
518817b3 SM |
25303 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25304 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 25305 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
ed2dc618 | 25306 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3cdcd0ce JB |
25307 | struct attribute *attr; |
25308 | struct dynamic_prop prop; | |
1c379e20 | 25309 | |
b4ba55a1 JB |
25310 | /* For Ada types, make sure that the gnat-specific data is always |
25311 | initialized (if not already set). There are a few types where | |
25312 | we should not be doing so, because the type-specific area is | |
25313 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
25314 | where the type-specific area is used to store the floatformat). | |
25315 | But this is not a problem, because the gnat-specific information | |
25316 | is actually not needed for these types. */ | |
25317 | if (need_gnat_info (cu) | |
25318 | && TYPE_CODE (type) != TYPE_CODE_FUNC | |
25319 | && TYPE_CODE (type) != TYPE_CODE_FLT | |
09e2d7c7 DE |
25320 | && TYPE_CODE (type) != TYPE_CODE_METHODPTR |
25321 | && TYPE_CODE (type) != TYPE_CODE_MEMBERPTR | |
25322 | && TYPE_CODE (type) != TYPE_CODE_METHOD | |
b4ba55a1 JB |
25323 | && !HAVE_GNAT_AUX_INFO (type)) |
25324 | INIT_GNAT_SPECIFIC (type); | |
25325 | ||
3f2f83dd KB |
25326 | /* Read DW_AT_allocated and set in type. */ |
25327 | attr = dwarf2_attr (die, DW_AT_allocated, cu); | |
25328 | if (attr_form_is_block (attr)) | |
25329 | { | |
25330 | if (attr_to_dynamic_prop (attr, die, cu, &prop)) | |
50a82047 | 25331 | add_dyn_prop (DYN_PROP_ALLOCATED, prop, type); |
3f2f83dd KB |
25332 | } |
25333 | else if (attr != NULL) | |
25334 | { | |
b98664d3 | 25335 | complaint (_("DW_AT_allocated has the wrong form (%s) at DIE %s"), |
9c541725 | 25336 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), |
9d8780f0 | 25337 | sect_offset_str (die->sect_off)); |
3f2f83dd KB |
25338 | } |
25339 | ||
25340 | /* Read DW_AT_associated and set in type. */ | |
25341 | attr = dwarf2_attr (die, DW_AT_associated, cu); | |
25342 | if (attr_form_is_block (attr)) | |
25343 | { | |
25344 | if (attr_to_dynamic_prop (attr, die, cu, &prop)) | |
50a82047 | 25345 | add_dyn_prop (DYN_PROP_ASSOCIATED, prop, type); |
3f2f83dd KB |
25346 | } |
25347 | else if (attr != NULL) | |
25348 | { | |
b98664d3 | 25349 | complaint (_("DW_AT_associated has the wrong form (%s) at DIE %s"), |
9c541725 | 25350 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), |
9d8780f0 | 25351 | sect_offset_str (die->sect_off)); |
3f2f83dd KB |
25352 | } |
25353 | ||
3cdcd0ce JB |
25354 | /* Read DW_AT_data_location and set in type. */ |
25355 | attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
25356 | if (attr_to_dynamic_prop (attr, die, cu, &prop)) | |
50a82047 | 25357 | add_dyn_prop (DYN_PROP_DATA_LOCATION, prop, type); |
3cdcd0ce | 25358 | |
dee91e82 | 25359 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 25360 | { |
dee91e82 DE |
25361 | dwarf2_per_objfile->die_type_hash = |
25362 | htab_create_alloc_ex (127, | |
25363 | per_cu_offset_and_type_hash, | |
25364 | per_cu_offset_and_type_eq, | |
25365 | NULL, | |
25366 | &objfile->objfile_obstack, | |
25367 | hashtab_obstack_allocate, | |
25368 | dummy_obstack_deallocate); | |
f792889a | 25369 | } |
1c379e20 | 25370 | |
dee91e82 | 25371 | ofs.per_cu = cu->per_cu; |
9c541725 | 25372 | ofs.sect_off = die->sect_off; |
1c379e20 | 25373 | ofs.type = type; |
dee91e82 DE |
25374 | slot = (struct dwarf2_per_cu_offset_and_type **) |
25375 | htab_find_slot (dwarf2_per_objfile->die_type_hash, &ofs, INSERT); | |
7e314c57 | 25376 | if (*slot) |
b98664d3 | 25377 | complaint (_("A problem internal to GDB: DIE %s has type already set"), |
9d8780f0 | 25378 | sect_offset_str (die->sect_off)); |
8d749320 SM |
25379 | *slot = XOBNEW (&objfile->objfile_obstack, |
25380 | struct dwarf2_per_cu_offset_and_type); | |
1c379e20 | 25381 | **slot = ofs; |
f792889a | 25382 | return type; |
1c379e20 DJ |
25383 | } |
25384 | ||
9c541725 | 25385 | /* Look up the type for the die at SECT_OFF in PER_CU in die_type_hash, |
02142a6c | 25386 | or return NULL if the die does not have a saved type. */ |
1c379e20 DJ |
25387 | |
25388 | static struct type * | |
9c541725 | 25389 | get_die_type_at_offset (sect_offset sect_off, |
673bfd45 | 25390 | struct dwarf2_per_cu_data *per_cu) |
1c379e20 | 25391 | { |
dee91e82 | 25392 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
ed2dc618 | 25393 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
f792889a | 25394 | |
dee91e82 | 25395 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 25396 | return NULL; |
1c379e20 | 25397 | |
dee91e82 | 25398 | ofs.per_cu = per_cu; |
9c541725 | 25399 | ofs.sect_off = sect_off; |
9a3c8263 SM |
25400 | slot = ((struct dwarf2_per_cu_offset_and_type *) |
25401 | htab_find (dwarf2_per_objfile->die_type_hash, &ofs)); | |
1c379e20 DJ |
25402 | if (slot) |
25403 | return slot->type; | |
25404 | else | |
25405 | return NULL; | |
25406 | } | |
25407 | ||
02142a6c | 25408 | /* Look up the type for DIE in CU in die_type_hash, |
673bfd45 DE |
25409 | or return NULL if DIE does not have a saved type. */ |
25410 | ||
25411 | static struct type * | |
25412 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
25413 | { | |
9c541725 | 25414 | return get_die_type_at_offset (die->sect_off, cu->per_cu); |
673bfd45 DE |
25415 | } |
25416 | ||
10b3939b DJ |
25417 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
25418 | ||
25419 | static void | |
25420 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
25421 | struct dwarf2_per_cu_data *ref_per_cu) | |
25422 | { | |
25423 | void **slot; | |
25424 | ||
25425 | if (cu->dependencies == NULL) | |
25426 | cu->dependencies | |
25427 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
25428 | NULL, &cu->comp_unit_obstack, | |
25429 | hashtab_obstack_allocate, | |
25430 | dummy_obstack_deallocate); | |
25431 | ||
25432 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
25433 | if (*slot == NULL) | |
25434 | *slot = ref_per_cu; | |
25435 | } | |
1c379e20 | 25436 | |
f504f079 DE |
25437 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
25438 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
25439 | cache that we must keep because we are keeping CU. */ |
25440 | ||
10b3939b DJ |
25441 | static int |
25442 | dwarf2_mark_helper (void **slot, void *data) | |
25443 | { | |
25444 | struct dwarf2_per_cu_data *per_cu; | |
25445 | ||
25446 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
d07ed419 JK |
25447 | |
25448 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
25449 | reading of the chain. As such dependencies remain valid it is not much | |
25450 | useful to track and undo them during QUIT cleanups. */ | |
25451 | if (per_cu->cu == NULL) | |
25452 | return 1; | |
25453 | ||
10b3939b DJ |
25454 | if (per_cu->cu->mark) |
25455 | return 1; | |
25456 | per_cu->cu->mark = 1; | |
25457 | ||
25458 | if (per_cu->cu->dependencies != NULL) | |
25459 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
25460 | ||
25461 | return 1; | |
25462 | } | |
25463 | ||
f504f079 DE |
25464 | /* Set the mark field in CU and in every other compilation unit in the |
25465 | cache that we must keep because we are keeping CU. */ | |
25466 | ||
ae038cb0 DJ |
25467 | static void |
25468 | dwarf2_mark (struct dwarf2_cu *cu) | |
25469 | { | |
25470 | if (cu->mark) | |
25471 | return; | |
25472 | cu->mark = 1; | |
10b3939b DJ |
25473 | if (cu->dependencies != NULL) |
25474 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
25475 | } |
25476 | ||
25477 | static void | |
25478 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
25479 | { | |
25480 | while (per_cu) | |
25481 | { | |
25482 | per_cu->cu->mark = 0; | |
25483 | per_cu = per_cu->cu->read_in_chain; | |
25484 | } | |
72bf9492 DJ |
25485 | } |
25486 | ||
72bf9492 DJ |
25487 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
25488 | is its offset in .debug_info for this objfile. */ | |
25489 | ||
25490 | static hashval_t | |
25491 | partial_die_hash (const void *item) | |
25492 | { | |
9a3c8263 SM |
25493 | const struct partial_die_info *part_die |
25494 | = (const struct partial_die_info *) item; | |
9a619af0 | 25495 | |
9c541725 | 25496 | return to_underlying (part_die->sect_off); |
72bf9492 DJ |
25497 | } |
25498 | ||
25499 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
25500 | are equal if they have the same offset. */ | |
25501 | ||
25502 | static int | |
25503 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
25504 | { | |
9a3c8263 SM |
25505 | const struct partial_die_info *part_die_lhs |
25506 | = (const struct partial_die_info *) item_lhs; | |
25507 | const struct partial_die_info *part_die_rhs | |
25508 | = (const struct partial_die_info *) item_rhs; | |
9a619af0 | 25509 | |
9c541725 | 25510 | return part_die_lhs->sect_off == part_die_rhs->sect_off; |
72bf9492 DJ |
25511 | } |
25512 | ||
3c3bb058 AB |
25513 | struct cmd_list_element *set_dwarf_cmdlist; |
25514 | struct cmd_list_element *show_dwarf_cmdlist; | |
ae038cb0 DJ |
25515 | |
25516 | static void | |
981a3fb3 | 25517 | set_dwarf_cmd (const char *args, int from_tty) |
ae038cb0 | 25518 | { |
b4f54984 | 25519 | help_list (set_dwarf_cmdlist, "maintenance set dwarf ", all_commands, |
635c7e8a | 25520 | gdb_stdout); |
ae038cb0 DJ |
25521 | } |
25522 | ||
25523 | static void | |
981a3fb3 | 25524 | show_dwarf_cmd (const char *args, int from_tty) |
6e70227d | 25525 | { |
b4f54984 | 25526 | cmd_show_list (show_dwarf_cmdlist, from_tty, ""); |
ae038cb0 DJ |
25527 | } |
25528 | ||
cd4fb1b2 | 25529 | int dwarf_always_disassemble; |
437afbb8 | 25530 | |
437afbb8 | 25531 | static void |
cd4fb1b2 SM |
25532 | show_dwarf_always_disassemble (struct ui_file *file, int from_tty, |
25533 | struct cmd_list_element *c, const char *value) | |
9291a0cd | 25534 | { |
cd4fb1b2 SM |
25535 | fprintf_filtered (file, |
25536 | _("Whether to always disassemble " | |
25537 | "DWARF expressions is %s.\n"), | |
25538 | value); | |
9291a0cd TT |
25539 | } |
25540 | ||
9291a0cd | 25541 | static void |
cd4fb1b2 SM |
25542 | show_check_physname (struct ui_file *file, int from_tty, |
25543 | struct cmd_list_element *c, const char *value) | |
9291a0cd | 25544 | { |
cd4fb1b2 SM |
25545 | fprintf_filtered (file, |
25546 | _("Whether to check \"physname\" is %s.\n"), | |
25547 | value); | |
9291a0cd TT |
25548 | } |
25549 | ||
cd4fb1b2 SM |
25550 | void |
25551 | _initialize_dwarf2_read (void) | |
9291a0cd | 25552 | { |
d95d3aef TT |
25553 | dwarf2_objfile_data_key |
25554 | = register_objfile_data_with_cleanup (nullptr, dwarf2_free_objfile); | |
156942c7 | 25555 | |
cd4fb1b2 SM |
25556 | add_prefix_cmd ("dwarf", class_maintenance, set_dwarf_cmd, _("\ |
25557 | Set DWARF specific variables.\n\ | |
25558 | Configure DWARF variables such as the cache size"), | |
25559 | &set_dwarf_cmdlist, "maintenance set dwarf ", | |
25560 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
156942c7 | 25561 | |
cd4fb1b2 SM |
25562 | add_prefix_cmd ("dwarf", class_maintenance, show_dwarf_cmd, _("\ |
25563 | Show DWARF specific variables\n\ | |
25564 | Show DWARF variables such as the cache size"), | |
25565 | &show_dwarf_cmdlist, "maintenance show dwarf ", | |
25566 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
156942c7 | 25567 | |
cd4fb1b2 SM |
25568 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, |
25569 | &dwarf_max_cache_age, _("\ | |
25570 | Set the upper bound on the age of cached DWARF compilation units."), _("\ | |
25571 | Show the upper bound on the age of cached DWARF compilation units."), _("\ | |
25572 | A higher limit means that cached compilation units will be stored\n\ | |
25573 | in memory longer, and more total memory will be used. Zero disables\n\ | |
25574 | caching, which can slow down startup."), | |
25575 | NULL, | |
25576 | show_dwarf_max_cache_age, | |
25577 | &set_dwarf_cmdlist, | |
25578 | &show_dwarf_cmdlist); | |
156942c7 | 25579 | |
cd4fb1b2 SM |
25580 | add_setshow_boolean_cmd ("always-disassemble", class_obscure, |
25581 | &dwarf_always_disassemble, _("\ | |
25582 | Set whether `info address' always disassembles DWARF expressions."), _("\ | |
25583 | Show whether `info address' always disassembles DWARF expressions."), _("\ | |
25584 | When enabled, DWARF expressions are always printed in an assembly-like\n\ | |
25585 | syntax. When disabled, expressions will be printed in a more\n\ | |
25586 | conversational style, when possible."), | |
25587 | NULL, | |
25588 | show_dwarf_always_disassemble, | |
25589 | &set_dwarf_cmdlist, | |
25590 | &show_dwarf_cmdlist); | |
9291a0cd | 25591 | |
cd4fb1b2 SM |
25592 | add_setshow_zuinteger_cmd ("dwarf-read", no_class, &dwarf_read_debug, _("\ |
25593 | Set debugging of the DWARF reader."), _("\ | |
25594 | Show debugging of the DWARF reader."), _("\ | |
25595 | When enabled (non-zero), debugging messages are printed during DWARF\n\ | |
25596 | reading and symtab expansion. A value of 1 (one) provides basic\n\ | |
25597 | information. A value greater than 1 provides more verbose information."), | |
25598 | NULL, | |
25599 | NULL, | |
25600 | &setdebuglist, &showdebuglist); | |
9291a0cd | 25601 | |
cd4fb1b2 SM |
25602 | add_setshow_zuinteger_cmd ("dwarf-die", no_class, &dwarf_die_debug, _("\ |
25603 | Set debugging of the DWARF DIE reader."), _("\ | |
25604 | Show debugging of the DWARF DIE reader."), _("\ | |
25605 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
25606 | The value is the maximum depth to print."), | |
25607 | NULL, | |
25608 | NULL, | |
25609 | &setdebuglist, &showdebuglist); | |
9291a0cd | 25610 | |
cd4fb1b2 SM |
25611 | add_setshow_zuinteger_cmd ("dwarf-line", no_class, &dwarf_line_debug, _("\ |
25612 | Set debugging of the dwarf line reader."), _("\ | |
25613 | Show debugging of the dwarf line reader."), _("\ | |
25614 | When enabled (non-zero), line number entries are dumped as they are read in.\n\ | |
25615 | A value of 1 (one) provides basic information.\n\ | |
25616 | A value greater than 1 provides more verbose information."), | |
25617 | NULL, | |
25618 | NULL, | |
25619 | &setdebuglist, &showdebuglist); | |
437afbb8 | 25620 | |
cd4fb1b2 SM |
25621 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
25622 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
25623 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
25624 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
25625 | the demangler."), | |
25626 | NULL, show_check_physname, | |
25627 | &setdebuglist, &showdebuglist); | |
900e11f9 | 25628 | |
e615022a DE |
25629 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
25630 | no_class, &use_deprecated_index_sections, _("\ | |
25631 | Set whether to use deprecated gdb_index sections."), _("\ | |
25632 | Show whether to use deprecated gdb_index sections."), _("\ | |
25633 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
25634 | Normally they are ignored either because of a missing feature or\n\ | |
25635 | performance issue.\n\ | |
25636 | Warning: This option must be enabled before gdb reads the file."), | |
25637 | NULL, | |
25638 | NULL, | |
25639 | &setlist, &showlist); | |
25640 | ||
f1e6e072 TT |
25641 | dwarf2_locexpr_index = register_symbol_computed_impl (LOC_COMPUTED, |
25642 | &dwarf2_locexpr_funcs); | |
25643 | dwarf2_loclist_index = register_symbol_computed_impl (LOC_COMPUTED, | |
25644 | &dwarf2_loclist_funcs); | |
25645 | ||
25646 | dwarf2_locexpr_block_index = register_symbol_block_impl (LOC_BLOCK, | |
25647 | &dwarf2_block_frame_base_locexpr_funcs); | |
25648 | dwarf2_loclist_block_index = register_symbol_block_impl (LOC_BLOCK, | |
25649 | &dwarf2_block_frame_base_loclist_funcs); | |
c62446b1 PA |
25650 | |
25651 | #if GDB_SELF_TEST | |
25652 | selftests::register_test ("dw2_expand_symtabs_matching", | |
25653 | selftests::dw2_expand_symtabs_matching::run_test); | |
25654 | #endif | |
6502dd73 | 25655 | } |