Commit | Line | Data |
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c906108c | 1 | /* DWARF 2 debugging format support for GDB. |
917c78fc | 2 | |
0b302171 | 3 | Copyright (C) 1994-2012 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 SS |
31 | #include "defs.h" |
32 | #include "bfd.h" | |
c906108c SS |
33 | #include "symtab.h" |
34 | #include "gdbtypes.h" | |
c906108c | 35 | #include "objfiles.h" |
fa8f86ff | 36 | #include "dwarf2.h" |
c906108c SS |
37 | #include "buildsym.h" |
38 | #include "demangle.h" | |
50f182aa | 39 | #include "gdb-demangle.h" |
c906108c | 40 | #include "expression.h" |
d5166ae1 | 41 | #include "filenames.h" /* for DOSish file names */ |
2e276125 | 42 | #include "macrotab.h" |
c906108c SS |
43 | #include "language.h" |
44 | #include "complaints.h" | |
357e46e7 | 45 | #include "bcache.h" |
4c2df51b DJ |
46 | #include "dwarf2expr.h" |
47 | #include "dwarf2loc.h" | |
9219021c | 48 | #include "cp-support.h" |
72bf9492 | 49 | #include "hashtab.h" |
ae038cb0 DJ |
50 | #include "command.h" |
51 | #include "gdbcmd.h" | |
edb3359d | 52 | #include "block.h" |
ff013f42 | 53 | #include "addrmap.h" |
94af9270 KS |
54 | #include "typeprint.h" |
55 | #include "jv-lang.h" | |
ccefe4c4 | 56 | #include "psympriv.h" |
9291a0cd TT |
57 | #include "exceptions.h" |
58 | #include "gdb_stat.h" | |
96d19272 | 59 | #include "completer.h" |
34eaf542 | 60 | #include "vec.h" |
98bfdba5 | 61 | #include "c-lang.h" |
a766d390 | 62 | #include "go-lang.h" |
98bfdba5 | 63 | #include "valprint.h" |
3019eac3 | 64 | #include "gdbcore.h" /* for gnutarget */ |
156942c7 | 65 | #include "gdb/gdb-index.h" |
60d5a603 | 66 | #include <ctype.h> |
4c2df51b | 67 | |
c906108c SS |
68 | #include <fcntl.h> |
69 | #include "gdb_string.h" | |
4bdf3d34 | 70 | #include "gdb_assert.h" |
c906108c | 71 | #include <sys/types.h> |
233a11ab CS |
72 | #ifdef HAVE_ZLIB_H |
73 | #include <zlib.h> | |
74 | #endif | |
dce234bc PP |
75 | #ifdef HAVE_MMAP |
76 | #include <sys/mman.h> | |
85d9bd0e TT |
77 | #ifndef MAP_FAILED |
78 | #define MAP_FAILED ((void *) -1) | |
79 | #endif | |
dce234bc | 80 | #endif |
d8151005 | 81 | |
34eaf542 TT |
82 | typedef struct symbol *symbolp; |
83 | DEF_VEC_P (symbolp); | |
84 | ||
45cfd468 DE |
85 | /* When non-zero, print basic high level tracing messages. |
86 | This is in contrast to the low level DIE reading of dwarf2_die_debug. */ | |
87 | static int dwarf2_read_debug = 0; | |
88 | ||
d97bc12b DE |
89 | /* When non-zero, dump DIEs after they are read in. */ |
90 | static int dwarf2_die_debug = 0; | |
91 | ||
900e11f9 JK |
92 | /* When non-zero, cross-check physname against demangler. */ |
93 | static int check_physname = 0; | |
94 | ||
481860b3 GB |
95 | /* When non-zero, do not reject deprecated .gdb_index sections. */ |
96 | int use_deprecated_index_sections = 0; | |
97 | ||
dce234bc PP |
98 | static int pagesize; |
99 | ||
df8a16a1 DJ |
100 | /* When set, the file that we're processing is known to have debugging |
101 | info for C++ namespaces. GCC 3.3.x did not produce this information, | |
102 | but later versions do. */ | |
103 | ||
104 | static int processing_has_namespace_info; | |
105 | ||
6502dd73 DJ |
106 | static const struct objfile_data *dwarf2_objfile_data_key; |
107 | ||
dce234bc PP |
108 | struct dwarf2_section_info |
109 | { | |
110 | asection *asection; | |
111 | gdb_byte *buffer; | |
112 | bfd_size_type size; | |
b315ab21 TG |
113 | /* Not NULL if the section was actually mmapped. */ |
114 | void *map_addr; | |
115 | /* Page aligned size of mmapped area. */ | |
116 | bfd_size_type map_len; | |
be391dca TT |
117 | /* True if we have tried to read this section. */ |
118 | int readin; | |
dce234bc PP |
119 | }; |
120 | ||
8b70b953 TT |
121 | typedef struct dwarf2_section_info dwarf2_section_info_def; |
122 | DEF_VEC_O (dwarf2_section_info_def); | |
123 | ||
9291a0cd TT |
124 | /* All offsets in the index are of this type. It must be |
125 | architecture-independent. */ | |
126 | typedef uint32_t offset_type; | |
127 | ||
128 | DEF_VEC_I (offset_type); | |
129 | ||
156942c7 DE |
130 | /* Ensure only legit values are used. */ |
131 | #define DW2_GDB_INDEX_SYMBOL_STATIC_SET_VALUE(cu_index, value) \ | |
132 | do { \ | |
133 | gdb_assert ((unsigned int) (value) <= 1); \ | |
134 | GDB_INDEX_SYMBOL_STATIC_SET_VALUE((cu_index), (value)); \ | |
135 | } while (0) | |
136 | ||
137 | /* Ensure only legit values are used. */ | |
138 | #define DW2_GDB_INDEX_SYMBOL_KIND_SET_VALUE(cu_index, value) \ | |
139 | do { \ | |
140 | gdb_assert ((value) >= GDB_INDEX_SYMBOL_KIND_TYPE \ | |
141 | && (value) <= GDB_INDEX_SYMBOL_KIND_OTHER); \ | |
142 | GDB_INDEX_SYMBOL_KIND_SET_VALUE((cu_index), (value)); \ | |
143 | } while (0) | |
144 | ||
145 | /* Ensure we don't use more than the alloted nuber of bits for the CU. */ | |
146 | #define DW2_GDB_INDEX_CU_SET_VALUE(cu_index, value) \ | |
147 | do { \ | |
148 | gdb_assert (((value) & ~GDB_INDEX_CU_MASK) == 0); \ | |
149 | GDB_INDEX_CU_SET_VALUE((cu_index), (value)); \ | |
150 | } while (0) | |
151 | ||
9291a0cd TT |
152 | /* A description of the mapped index. The file format is described in |
153 | a comment by the code that writes the index. */ | |
154 | struct mapped_index | |
155 | { | |
559a7a62 JK |
156 | /* Index data format version. */ |
157 | int version; | |
158 | ||
9291a0cd TT |
159 | /* The total length of the buffer. */ |
160 | off_t total_size; | |
b11b1f88 | 161 | |
9291a0cd TT |
162 | /* A pointer to the address table data. */ |
163 | const gdb_byte *address_table; | |
b11b1f88 | 164 | |
9291a0cd TT |
165 | /* Size of the address table data in bytes. */ |
166 | offset_type address_table_size; | |
b11b1f88 | 167 | |
3876f04e DE |
168 | /* The symbol table, implemented as a hash table. */ |
169 | const offset_type *symbol_table; | |
b11b1f88 | 170 | |
9291a0cd | 171 | /* Size in slots, each slot is 2 offset_types. */ |
3876f04e | 172 | offset_type symbol_table_slots; |
b11b1f88 | 173 | |
9291a0cd TT |
174 | /* A pointer to the constant pool. */ |
175 | const char *constant_pool; | |
176 | }; | |
177 | ||
95554aad TT |
178 | typedef struct dwarf2_per_cu_data *dwarf2_per_cu_ptr; |
179 | DEF_VEC_P (dwarf2_per_cu_ptr); | |
180 | ||
9cdd5dbd DE |
181 | /* Collection of data recorded per objfile. |
182 | This hangs off of dwarf2_objfile_data_key. */ | |
183 | ||
6502dd73 DJ |
184 | struct dwarf2_per_objfile |
185 | { | |
dce234bc PP |
186 | struct dwarf2_section_info info; |
187 | struct dwarf2_section_info abbrev; | |
188 | struct dwarf2_section_info line; | |
dce234bc PP |
189 | struct dwarf2_section_info loc; |
190 | struct dwarf2_section_info macinfo; | |
cf2c3c16 | 191 | struct dwarf2_section_info macro; |
dce234bc PP |
192 | struct dwarf2_section_info str; |
193 | struct dwarf2_section_info ranges; | |
3019eac3 | 194 | struct dwarf2_section_info addr; |
dce234bc PP |
195 | struct dwarf2_section_info frame; |
196 | struct dwarf2_section_info eh_frame; | |
9291a0cd | 197 | struct dwarf2_section_info gdb_index; |
ae038cb0 | 198 | |
8b70b953 TT |
199 | VEC (dwarf2_section_info_def) *types; |
200 | ||
be391dca TT |
201 | /* Back link. */ |
202 | struct objfile *objfile; | |
203 | ||
d467dd73 | 204 | /* Table of all the compilation units. This is used to locate |
10b3939b | 205 | the target compilation unit of a particular reference. */ |
ae038cb0 DJ |
206 | struct dwarf2_per_cu_data **all_comp_units; |
207 | ||
208 | /* The number of compilation units in ALL_COMP_UNITS. */ | |
209 | int n_comp_units; | |
210 | ||
1fd400ff | 211 | /* The number of .debug_types-related CUs. */ |
d467dd73 | 212 | int n_type_units; |
1fd400ff | 213 | |
d467dd73 | 214 | /* The .debug_types-related CUs (TUs). */ |
b4dd5633 | 215 | struct signatured_type **all_type_units; |
1fd400ff | 216 | |
f4dc4d17 DE |
217 | /* The number of entries in all_type_unit_groups. */ |
218 | int n_type_unit_groups; | |
219 | ||
220 | /* Table of type unit groups. | |
221 | This exists to make it easy to iterate over all CUs and TU groups. */ | |
222 | struct type_unit_group **all_type_unit_groups; | |
223 | ||
224 | /* Table of struct type_unit_group objects. | |
225 | The hash key is the DW_AT_stmt_list value. */ | |
226 | htab_t type_unit_groups; | |
72dca2f5 | 227 | |
348e048f DE |
228 | /* A table mapping .debug_types signatures to its signatured_type entry. |
229 | This is NULL if the .debug_types section hasn't been read in yet. */ | |
230 | htab_t signatured_types; | |
231 | ||
f4dc4d17 DE |
232 | /* Type unit statistics, to see how well the scaling improvements |
233 | are doing. */ | |
234 | struct tu_stats | |
235 | { | |
236 | int nr_uniq_abbrev_tables; | |
237 | int nr_symtabs; | |
238 | int nr_symtab_sharers; | |
239 | int nr_stmt_less_type_units; | |
240 | } tu_stats; | |
241 | ||
242 | /* A chain of compilation units that are currently read in, so that | |
243 | they can be freed later. */ | |
244 | struct dwarf2_per_cu_data *read_in_chain; | |
245 | ||
3019eac3 DE |
246 | /* A table mapping DW_AT_dwo_name values to struct dwo_file objects. |
247 | This is NULL if the table hasn't been allocated yet. */ | |
248 | htab_t dwo_files; | |
249 | ||
72dca2f5 FR |
250 | /* A flag indicating wether this objfile has a section loaded at a |
251 | VMA of 0. */ | |
252 | int has_section_at_zero; | |
9291a0cd | 253 | |
ae2de4f8 DE |
254 | /* True if we are using the mapped index, |
255 | or we are faking it for OBJF_READNOW's sake. */ | |
9291a0cd TT |
256 | unsigned char using_index; |
257 | ||
ae2de4f8 | 258 | /* The mapped index, or NULL if .gdb_index is missing or not being used. */ |
9291a0cd | 259 | struct mapped_index *index_table; |
98bfdba5 | 260 | |
7b9f3c50 DE |
261 | /* When using index_table, this keeps track of all quick_file_names entries. |
262 | TUs can share line table entries with CUs or other TUs, and there can be | |
263 | a lot more TUs than unique line tables, so we maintain a separate table | |
264 | of all line table entries to support the sharing. */ | |
265 | htab_t quick_file_names_table; | |
266 | ||
98bfdba5 PA |
267 | /* Set during partial symbol reading, to prevent queueing of full |
268 | symbols. */ | |
269 | int reading_partial_symbols; | |
673bfd45 | 270 | |
dee91e82 | 271 | /* Table mapping type DIEs to their struct type *. |
673bfd45 | 272 | This is NULL if not allocated yet. |
dee91e82 DE |
273 | The mapping is done via (CU/TU signature + DIE offset) -> type. */ |
274 | htab_t die_type_hash; | |
95554aad TT |
275 | |
276 | /* The CUs we recently read. */ | |
277 | VEC (dwarf2_per_cu_ptr) *just_read_cus; | |
6502dd73 DJ |
278 | }; |
279 | ||
280 | static struct dwarf2_per_objfile *dwarf2_per_objfile; | |
c906108c | 281 | |
251d32d9 | 282 | /* Default names of the debugging sections. */ |
c906108c | 283 | |
233a11ab CS |
284 | /* Note that if the debugging section has been compressed, it might |
285 | have a name like .zdebug_info. */ | |
286 | ||
9cdd5dbd DE |
287 | static const struct dwarf2_debug_sections dwarf2_elf_names = |
288 | { | |
251d32d9 TG |
289 | { ".debug_info", ".zdebug_info" }, |
290 | { ".debug_abbrev", ".zdebug_abbrev" }, | |
291 | { ".debug_line", ".zdebug_line" }, | |
292 | { ".debug_loc", ".zdebug_loc" }, | |
293 | { ".debug_macinfo", ".zdebug_macinfo" }, | |
cf2c3c16 | 294 | { ".debug_macro", ".zdebug_macro" }, |
251d32d9 TG |
295 | { ".debug_str", ".zdebug_str" }, |
296 | { ".debug_ranges", ".zdebug_ranges" }, | |
297 | { ".debug_types", ".zdebug_types" }, | |
3019eac3 | 298 | { ".debug_addr", ".zdebug_addr" }, |
251d32d9 TG |
299 | { ".debug_frame", ".zdebug_frame" }, |
300 | { ".eh_frame", NULL }, | |
24d3216f TT |
301 | { ".gdb_index", ".zgdb_index" }, |
302 | 23 | |
251d32d9 | 303 | }; |
c906108c | 304 | |
3019eac3 DE |
305 | /* List of DWO sections. */ |
306 | ||
307 | static const struct dwo_section_names | |
308 | { | |
309 | struct dwarf2_section_names abbrev_dwo; | |
310 | struct dwarf2_section_names info_dwo; | |
311 | struct dwarf2_section_names line_dwo; | |
312 | struct dwarf2_section_names loc_dwo; | |
09262596 DE |
313 | struct dwarf2_section_names macinfo_dwo; |
314 | struct dwarf2_section_names macro_dwo; | |
3019eac3 DE |
315 | struct dwarf2_section_names str_dwo; |
316 | struct dwarf2_section_names str_offsets_dwo; | |
317 | struct dwarf2_section_names types_dwo; | |
318 | } | |
319 | dwo_section_names = | |
320 | { | |
321 | { ".debug_abbrev.dwo", ".zdebug_abbrev.dwo" }, | |
322 | { ".debug_info.dwo", ".zdebug_info.dwo" }, | |
323 | { ".debug_line.dwo", ".zdebug_line.dwo" }, | |
324 | { ".debug_loc.dwo", ".zdebug_loc.dwo" }, | |
09262596 DE |
325 | { ".debug_macinfo.dwo", ".zdebug_macinfo.dwo" }, |
326 | { ".debug_macro.dwo", ".zdebug_macro.dwo" }, | |
3019eac3 DE |
327 | { ".debug_str.dwo", ".zdebug_str.dwo" }, |
328 | { ".debug_str_offsets.dwo", ".zdebug_str_offsets.dwo" }, | |
329 | { ".debug_types.dwo", ".zdebug_types.dwo" }, | |
330 | }; | |
331 | ||
c906108c SS |
332 | /* local data types */ |
333 | ||
107d2387 AC |
334 | /* The data in a compilation unit header, after target2host |
335 | translation, looks like this. */ | |
c906108c | 336 | struct comp_unit_head |
a738430d | 337 | { |
c764a876 | 338 | unsigned int length; |
a738430d | 339 | short version; |
a738430d MK |
340 | unsigned char addr_size; |
341 | unsigned char signed_addr_p; | |
b64f50a1 | 342 | sect_offset abbrev_offset; |
57349743 | 343 | |
a738430d MK |
344 | /* Size of file offsets; either 4 or 8. */ |
345 | unsigned int offset_size; | |
57349743 | 346 | |
a738430d MK |
347 | /* Size of the length field; either 4 or 12. */ |
348 | unsigned int initial_length_size; | |
57349743 | 349 | |
a738430d MK |
350 | /* Offset to the first byte of this compilation unit header in the |
351 | .debug_info section, for resolving relative reference dies. */ | |
b64f50a1 | 352 | sect_offset offset; |
57349743 | 353 | |
d00adf39 DE |
354 | /* Offset to first die in this cu from the start of the cu. |
355 | This will be the first byte following the compilation unit header. */ | |
b64f50a1 | 356 | cu_offset first_die_offset; |
a738430d | 357 | }; |
c906108c | 358 | |
3da10d80 KS |
359 | /* Type used for delaying computation of method physnames. |
360 | See comments for compute_delayed_physnames. */ | |
361 | struct delayed_method_info | |
362 | { | |
363 | /* The type to which the method is attached, i.e., its parent class. */ | |
364 | struct type *type; | |
365 | ||
366 | /* The index of the method in the type's function fieldlists. */ | |
367 | int fnfield_index; | |
368 | ||
369 | /* The index of the method in the fieldlist. */ | |
370 | int index; | |
371 | ||
372 | /* The name of the DIE. */ | |
373 | const char *name; | |
374 | ||
375 | /* The DIE associated with this method. */ | |
376 | struct die_info *die; | |
377 | }; | |
378 | ||
379 | typedef struct delayed_method_info delayed_method_info; | |
380 | DEF_VEC_O (delayed_method_info); | |
381 | ||
e7c27a73 DJ |
382 | /* Internal state when decoding a particular compilation unit. */ |
383 | struct dwarf2_cu | |
384 | { | |
385 | /* The objfile containing this compilation unit. */ | |
386 | struct objfile *objfile; | |
387 | ||
d00adf39 | 388 | /* The header of the compilation unit. */ |
e7c27a73 | 389 | struct comp_unit_head header; |
e142c38c | 390 | |
d00adf39 DE |
391 | /* Base address of this compilation unit. */ |
392 | CORE_ADDR base_address; | |
393 | ||
394 | /* Non-zero if base_address has been set. */ | |
395 | int base_known; | |
396 | ||
e142c38c DJ |
397 | /* The language we are debugging. */ |
398 | enum language language; | |
399 | const struct language_defn *language_defn; | |
400 | ||
b0f35d58 DL |
401 | const char *producer; |
402 | ||
e142c38c DJ |
403 | /* The generic symbol table building routines have separate lists for |
404 | file scope symbols and all all other scopes (local scopes). So | |
405 | we need to select the right one to pass to add_symbol_to_list(). | |
406 | We do it by keeping a pointer to the correct list in list_in_scope. | |
407 | ||
408 | FIXME: The original dwarf code just treated the file scope as the | |
409 | first local scope, and all other local scopes as nested local | |
410 | scopes, and worked fine. Check to see if we really need to | |
411 | distinguish these in buildsym.c. */ | |
412 | struct pending **list_in_scope; | |
413 | ||
433df2d4 DE |
414 | /* The abbrev table for this CU. |
415 | Normally this points to the abbrev table in the objfile. | |
416 | But if DWO_UNIT is non-NULL this is the abbrev table in the DWO file. */ | |
417 | struct abbrev_table *abbrev_table; | |
72bf9492 | 418 | |
b64f50a1 JK |
419 | /* Hash table holding all the loaded partial DIEs |
420 | with partial_die->offset.SECT_OFF as hash. */ | |
72bf9492 DJ |
421 | htab_t partial_dies; |
422 | ||
423 | /* Storage for things with the same lifetime as this read-in compilation | |
424 | unit, including partial DIEs. */ | |
425 | struct obstack comp_unit_obstack; | |
426 | ||
ae038cb0 DJ |
427 | /* When multiple dwarf2_cu structures are living in memory, this field |
428 | chains them all together, so that they can be released efficiently. | |
429 | We will probably also want a generation counter so that most-recently-used | |
430 | compilation units are cached... */ | |
431 | struct dwarf2_per_cu_data *read_in_chain; | |
432 | ||
433 | /* Backchain to our per_cu entry if the tree has been built. */ | |
434 | struct dwarf2_per_cu_data *per_cu; | |
435 | ||
436 | /* How many compilation units ago was this CU last referenced? */ | |
437 | int last_used; | |
438 | ||
b64f50a1 JK |
439 | /* A hash table of DIE cu_offset for following references with |
440 | die_info->offset.sect_off as hash. */ | |
51545339 | 441 | htab_t die_hash; |
10b3939b DJ |
442 | |
443 | /* Full DIEs if read in. */ | |
444 | struct die_info *dies; | |
445 | ||
446 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
447 | units referenced by this one. Only set during full symbol processing; | |
448 | partial symbol tables do not have dependencies. */ | |
449 | htab_t dependencies; | |
450 | ||
cb1df416 DJ |
451 | /* Header data from the line table, during full symbol processing. */ |
452 | struct line_header *line_header; | |
453 | ||
3da10d80 KS |
454 | /* A list of methods which need to have physnames computed |
455 | after all type information has been read. */ | |
456 | VEC (delayed_method_info) *method_list; | |
457 | ||
96408a79 SA |
458 | /* To be copied to symtab->call_site_htab. */ |
459 | htab_t call_site_htab; | |
460 | ||
034e5797 DE |
461 | /* Non-NULL if this CU came from a DWO file. |
462 | There is an invariant here that is important to remember: | |
463 | Except for attributes copied from the top level DIE in the "main" | |
464 | (or "stub") file in preparation for reading the DWO file | |
465 | (e.g., DW_AT_GNU_addr_base), we KISS: there is only *one* CU. | |
466 | Either there isn't a DWO file (in which case this is NULL and the point | |
467 | is moot), or there is and either we're not going to read it (in which | |
468 | case this is NULL) or there is and we are reading it (in which case this | |
469 | is non-NULL). */ | |
3019eac3 DE |
470 | struct dwo_unit *dwo_unit; |
471 | ||
472 | /* The DW_AT_addr_base attribute if present, zero otherwise | |
473 | (zero is a valid value though). | |
474 | Note this value comes from the stub CU/TU's DIE. */ | |
475 | ULONGEST addr_base; | |
476 | ||
2e3cf129 DE |
477 | /* The DW_AT_ranges_base attribute if present, zero otherwise |
478 | (zero is a valid value though). | |
479 | Note this value comes from the stub CU/TU's DIE. | |
480 | Also note that the value is zero in the non-DWO case so this value can | |
481 | be used without needing to know whether DWO files are in use or not. */ | |
482 | ULONGEST ranges_base; | |
483 | ||
ae038cb0 DJ |
484 | /* Mark used when releasing cached dies. */ |
485 | unsigned int mark : 1; | |
486 | ||
8be455d7 JK |
487 | /* This CU references .debug_loc. See the symtab->locations_valid field. |
488 | This test is imperfect as there may exist optimized debug code not using | |
489 | any location list and still facing inlining issues if handled as | |
490 | unoptimized code. For a future better test see GCC PR other/32998. */ | |
8be455d7 | 491 | unsigned int has_loclist : 1; |
ba919b58 | 492 | |
685b1105 JK |
493 | /* These cache the results for producer_is_gxx_lt_4_6 and producer_is_icc. |
494 | CHECKED_PRODUCER is set if both PRODUCER_IS_GXX_LT_4_6 and PRODUCER_IS_ICC | |
495 | are valid. This information is cached because profiling CU expansion | |
496 | showed excessive time spent in producer_is_gxx_lt_4_6. */ | |
ba919b58 TT |
497 | unsigned int checked_producer : 1; |
498 | unsigned int producer_is_gxx_lt_4_6 : 1; | |
685b1105 | 499 | unsigned int producer_is_icc : 1; |
e7c27a73 DJ |
500 | }; |
501 | ||
10b3939b DJ |
502 | /* Persistent data held for a compilation unit, even when not |
503 | processing it. We put a pointer to this structure in the | |
28dee7f5 | 504 | read_symtab_private field of the psymtab. */ |
10b3939b | 505 | |
ae038cb0 DJ |
506 | struct dwarf2_per_cu_data |
507 | { | |
348e048f | 508 | /* The start offset and length of this compilation unit. 2**29-1 |
ae038cb0 | 509 | bytes should suffice to store the length of any compilation unit |
45452591 DE |
510 | - if it doesn't, GDB will fall over anyway. |
511 | NOTE: Unlike comp_unit_head.length, this length includes | |
3019eac3 DE |
512 | initial_length_size. |
513 | If the DIE refers to a DWO file, this is always of the original die, | |
514 | not the DWO file. */ | |
b64f50a1 | 515 | sect_offset offset; |
348e048f | 516 | unsigned int length : 29; |
ae038cb0 DJ |
517 | |
518 | /* Flag indicating this compilation unit will be read in before | |
519 | any of the current compilation units are processed. */ | |
c764a876 | 520 | unsigned int queued : 1; |
ae038cb0 | 521 | |
0d99eb77 DE |
522 | /* This flag will be set when reading partial DIEs if we need to load |
523 | absolutely all DIEs for this compilation unit, instead of just the ones | |
524 | we think are interesting. It gets set if we look for a DIE in the | |
5afb4e99 DJ |
525 | hash table and don't find it. */ |
526 | unsigned int load_all_dies : 1; | |
527 | ||
3019eac3 DE |
528 | /* Non-zero if this CU is from .debug_types. */ |
529 | unsigned int is_debug_types : 1; | |
530 | ||
531 | /* The section this CU/TU lives in. | |
532 | If the DIE refers to a DWO file, this is always the original die, | |
533 | not the DWO file. */ | |
534 | struct dwarf2_section_info *info_or_types_section; | |
348e048f | 535 | |
17ea53c3 JK |
536 | /* Set to non-NULL iff this CU is currently loaded. When it gets freed out |
537 | of the CU cache it gets reset to NULL again. */ | |
ae038cb0 | 538 | struct dwarf2_cu *cu; |
1c379e20 | 539 | |
9cdd5dbd DE |
540 | /* The corresponding objfile. |
541 | Normally we can get the objfile from dwarf2_per_objfile. | |
542 | However we can enter this file with just a "per_cu" handle. */ | |
9291a0cd TT |
543 | struct objfile *objfile; |
544 | ||
545 | /* When using partial symbol tables, the 'psymtab' field is active. | |
546 | Otherwise the 'quick' field is active. */ | |
547 | union | |
548 | { | |
549 | /* The partial symbol table associated with this compilation unit, | |
95554aad | 550 | or NULL for unread partial units. */ |
9291a0cd TT |
551 | struct partial_symtab *psymtab; |
552 | ||
553 | /* Data needed by the "quick" functions. */ | |
554 | struct dwarf2_per_cu_quick_data *quick; | |
555 | } v; | |
95554aad | 556 | |
f4dc4d17 DE |
557 | union |
558 | { | |
559 | /* The CUs we import using DW_TAG_imported_unit. This is filled in | |
560 | while reading psymtabs, used to compute the psymtab dependencies, | |
561 | and then cleared. Then it is filled in again while reading full | |
562 | symbols, and only deleted when the objfile is destroyed. */ | |
563 | VEC (dwarf2_per_cu_ptr) *imported_symtabs; | |
564 | ||
565 | /* Type units are grouped by their DW_AT_stmt_list entry so that they | |
566 | can share them. If this is a TU, this points to the containing | |
567 | symtab. */ | |
568 | struct type_unit_group *type_unit_group; | |
569 | } s; | |
ae038cb0 DJ |
570 | }; |
571 | ||
348e048f DE |
572 | /* Entry in the signatured_types hash table. */ |
573 | ||
574 | struct signatured_type | |
575 | { | |
42e7ad6c DE |
576 | /* The "per_cu" object of this type. |
577 | N.B.: This is the first member so that it's easy to convert pointers | |
578 | between them. */ | |
579 | struct dwarf2_per_cu_data per_cu; | |
580 | ||
3019eac3 | 581 | /* The type's signature. */ |
348e048f DE |
582 | ULONGEST signature; |
583 | ||
3019eac3 DE |
584 | /* Offset in the TU of the type's DIE, as read from the TU header. |
585 | If the definition lives in a DWO file, this value is unusable. */ | |
586 | cu_offset type_offset_in_tu; | |
587 | ||
588 | /* Offset in the section of the type's DIE. | |
589 | If the definition lives in a DWO file, this is the offset in the | |
590 | .debug_types.dwo section. | |
591 | The value is zero until the actual value is known. | |
592 | Zero is otherwise not a valid section offset. */ | |
593 | sect_offset type_offset_in_section; | |
348e048f DE |
594 | }; |
595 | ||
094b34ac DE |
596 | /* A struct that can be used as a hash key for tables based on DW_AT_stmt_list. |
597 | This includes type_unit_group and quick_file_names. */ | |
598 | ||
599 | struct stmt_list_hash | |
600 | { | |
601 | /* The DWO unit this table is from or NULL if there is none. */ | |
602 | struct dwo_unit *dwo_unit; | |
603 | ||
604 | /* Offset in .debug_line or .debug_line.dwo. */ | |
605 | sect_offset line_offset; | |
606 | }; | |
607 | ||
f4dc4d17 DE |
608 | /* Each element of dwarf2_per_objfile->type_unit_groups is a pointer to |
609 | an object of this type. */ | |
610 | ||
611 | struct type_unit_group | |
612 | { | |
613 | /* dwarf2read.c's main "handle" on the symtab. | |
614 | To simplify things we create an artificial CU that "includes" all the | |
615 | type units using this stmt_list so that the rest of the code still has | |
616 | a "per_cu" handle on the symtab. | |
617 | This PER_CU is recognized by having no section. */ | |
618 | #define IS_TYPE_UNIT_GROUP(per_cu) ((per_cu)->info_or_types_section == NULL) | |
094b34ac DE |
619 | struct dwarf2_per_cu_data per_cu; |
620 | ||
621 | union | |
622 | { | |
623 | /* The TUs that share this DW_AT_stmt_list entry. | |
624 | This is added to while parsing type units to build partial symtabs, | |
625 | and is deleted afterwards and not used again. */ | |
626 | VEC (dwarf2_per_cu_ptr) *tus; | |
f4dc4d17 | 627 | |
094b34ac DE |
628 | /* When reading the line table in "quick" functions, we need a real TU. |
629 | Any will do, we know they all share the same DW_AT_stmt_list entry. | |
630 | For simplicity's sake, we pick the first one. */ | |
631 | struct dwarf2_per_cu_data *first_tu; | |
632 | } t; | |
f4dc4d17 DE |
633 | |
634 | /* The primary symtab. | |
094b34ac DE |
635 | Type units in a group needn't all be defined in the same source file, |
636 | so we create an essentially anonymous symtab as the primary symtab. */ | |
f4dc4d17 DE |
637 | struct symtab *primary_symtab; |
638 | ||
094b34ac DE |
639 | /* The data used to construct the hash key. */ |
640 | struct stmt_list_hash hash; | |
f4dc4d17 DE |
641 | |
642 | /* The number of symtabs from the line header. | |
643 | The value here must match line_header.num_file_names. */ | |
644 | unsigned int num_symtabs; | |
645 | ||
646 | /* The symbol tables for this TU (obtained from the files listed in | |
647 | DW_AT_stmt_list). | |
648 | WARNING: The order of entries here must match the order of entries | |
649 | in the line header. After the first TU using this type_unit_group, the | |
650 | line header for the subsequent TUs is recreated from this. This is done | |
651 | because we need to use the same symtabs for each TU using the same | |
652 | DW_AT_stmt_list value. Also note that symtabs may be repeated here, | |
653 | there's no guarantee the line header doesn't have duplicate entries. */ | |
654 | struct symtab **symtabs; | |
655 | }; | |
656 | ||
3019eac3 DE |
657 | /* These sections are what may appear in a "dwo" file. */ |
658 | ||
659 | struct dwo_sections | |
660 | { | |
661 | struct dwarf2_section_info abbrev; | |
662 | struct dwarf2_section_info info; | |
663 | struct dwarf2_section_info line; | |
664 | struct dwarf2_section_info loc; | |
09262596 DE |
665 | struct dwarf2_section_info macinfo; |
666 | struct dwarf2_section_info macro; | |
3019eac3 DE |
667 | struct dwarf2_section_info str; |
668 | struct dwarf2_section_info str_offsets; | |
669 | VEC (dwarf2_section_info_def) *types; | |
670 | }; | |
671 | ||
672 | /* Common bits of DWO CUs/TUs. */ | |
673 | ||
674 | struct dwo_unit | |
675 | { | |
676 | /* Backlink to the containing struct dwo_file. */ | |
677 | struct dwo_file *dwo_file; | |
678 | ||
679 | /* The "id" that distinguishes this CU/TU. | |
680 | .debug_info calls this "dwo_id", .debug_types calls this "signature". | |
681 | Since signatures came first, we stick with it for consistency. */ | |
682 | ULONGEST signature; | |
683 | ||
684 | /* The section this CU/TU lives in, in the DWO file. */ | |
685 | struct dwarf2_section_info *info_or_types_section; | |
686 | ||
687 | /* Same as dwarf2_per_cu_data:{offset,length} but for the DWO section. */ | |
688 | sect_offset offset; | |
689 | unsigned int length; | |
690 | ||
691 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
692 | cu_offset type_offset_in_tu; | |
693 | }; | |
694 | ||
695 | /* Data for one DWO file. */ | |
696 | ||
697 | struct dwo_file | |
698 | { | |
699 | /* The DW_AT_GNU_dwo_name attribute. | |
700 | We don't manage space for this, it's an attribute. */ | |
701 | const char *dwo_name; | |
702 | ||
703 | /* The bfd, when the file is open. Otherwise this is NULL. */ | |
704 | bfd *dwo_bfd; | |
705 | ||
706 | /* Section info for this file. */ | |
707 | struct dwo_sections sections; | |
708 | ||
709 | /* Table of CUs in the file. | |
710 | Each element is a struct dwo_unit. */ | |
711 | htab_t cus; | |
712 | ||
713 | /* Table of TUs in the file. | |
714 | Each element is a struct dwo_unit. */ | |
715 | htab_t tus; | |
716 | }; | |
717 | ||
0963b4bd MS |
718 | /* Struct used to pass misc. parameters to read_die_and_children, et |
719 | al. which are used for both .debug_info and .debug_types dies. | |
720 | All parameters here are unchanging for the life of the call. This | |
dee91e82 | 721 | struct exists to abstract away the constant parameters of die reading. */ |
93311388 DE |
722 | |
723 | struct die_reader_specs | |
724 | { | |
dee91e82 | 725 | /* die_section->asection->owner. */ |
93311388 DE |
726 | bfd* abfd; |
727 | ||
728 | /* The CU of the DIE we are parsing. */ | |
729 | struct dwarf2_cu *cu; | |
730 | ||
3019eac3 DE |
731 | /* Non-NULL if reading a DWO file. */ |
732 | struct dwo_file *dwo_file; | |
733 | ||
dee91e82 | 734 | /* The section the die comes from. |
3019eac3 | 735 | This is either .debug_info or .debug_types, or the .dwo variants. */ |
dee91e82 DE |
736 | struct dwarf2_section_info *die_section; |
737 | ||
738 | /* die_section->buffer. */ | |
739 | gdb_byte *buffer; | |
f664829e DE |
740 | |
741 | /* The end of the buffer. */ | |
742 | const gdb_byte *buffer_end; | |
93311388 DE |
743 | }; |
744 | ||
fd820528 | 745 | /* Type of function passed to init_cutu_and_read_dies, et.al. */ |
dee91e82 DE |
746 | typedef void (die_reader_func_ftype) (const struct die_reader_specs *reader, |
747 | gdb_byte *info_ptr, | |
748 | struct die_info *comp_unit_die, | |
749 | int has_children, | |
750 | void *data); | |
751 | ||
debd256d JB |
752 | /* The line number information for a compilation unit (found in the |
753 | .debug_line section) begins with a "statement program header", | |
754 | which contains the following information. */ | |
755 | struct line_header | |
756 | { | |
757 | unsigned int total_length; | |
758 | unsigned short version; | |
759 | unsigned int header_length; | |
760 | unsigned char minimum_instruction_length; | |
2dc7f7b3 | 761 | unsigned char maximum_ops_per_instruction; |
debd256d JB |
762 | unsigned char default_is_stmt; |
763 | int line_base; | |
764 | unsigned char line_range; | |
765 | unsigned char opcode_base; | |
766 | ||
767 | /* standard_opcode_lengths[i] is the number of operands for the | |
768 | standard opcode whose value is i. This means that | |
769 | standard_opcode_lengths[0] is unused, and the last meaningful | |
770 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
771 | unsigned char *standard_opcode_lengths; | |
772 | ||
773 | /* The include_directories table. NOTE! These strings are not | |
774 | allocated with xmalloc; instead, they are pointers into | |
775 | debug_line_buffer. If you try to free them, `free' will get | |
776 | indigestion. */ | |
777 | unsigned int num_include_dirs, include_dirs_size; | |
778 | char **include_dirs; | |
779 | ||
780 | /* The file_names table. NOTE! These strings are not allocated | |
781 | with xmalloc; instead, they are pointers into debug_line_buffer. | |
782 | Don't try to free them directly. */ | |
783 | unsigned int num_file_names, file_names_size; | |
784 | struct file_entry | |
c906108c | 785 | { |
debd256d JB |
786 | char *name; |
787 | unsigned int dir_index; | |
788 | unsigned int mod_time; | |
789 | unsigned int length; | |
aaa75496 | 790 | int included_p; /* Non-zero if referenced by the Line Number Program. */ |
cb1df416 | 791 | struct symtab *symtab; /* The associated symbol table, if any. */ |
debd256d JB |
792 | } *file_names; |
793 | ||
794 | /* The start and end of the statement program following this | |
6502dd73 | 795 | header. These point into dwarf2_per_objfile->line_buffer. */ |
fe1b8b76 | 796 | gdb_byte *statement_program_start, *statement_program_end; |
debd256d | 797 | }; |
c906108c SS |
798 | |
799 | /* When we construct a partial symbol table entry we only | |
0963b4bd | 800 | need this much information. */ |
c906108c SS |
801 | struct partial_die_info |
802 | { | |
72bf9492 | 803 | /* Offset of this DIE. */ |
b64f50a1 | 804 | sect_offset offset; |
72bf9492 DJ |
805 | |
806 | /* DWARF-2 tag for this DIE. */ | |
807 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
808 | ||
72bf9492 DJ |
809 | /* Assorted flags describing the data found in this DIE. */ |
810 | unsigned int has_children : 1; | |
811 | unsigned int is_external : 1; | |
812 | unsigned int is_declaration : 1; | |
813 | unsigned int has_type : 1; | |
814 | unsigned int has_specification : 1; | |
815 | unsigned int has_pc_info : 1; | |
481860b3 | 816 | unsigned int may_be_inlined : 1; |
72bf9492 DJ |
817 | |
818 | /* Flag set if the SCOPE field of this structure has been | |
819 | computed. */ | |
820 | unsigned int scope_set : 1; | |
821 | ||
fa4028e9 JB |
822 | /* Flag set if the DIE has a byte_size attribute. */ |
823 | unsigned int has_byte_size : 1; | |
824 | ||
98bfdba5 PA |
825 | /* Flag set if any of the DIE's children are template arguments. */ |
826 | unsigned int has_template_arguments : 1; | |
827 | ||
abc72ce4 DE |
828 | /* Flag set if fixup_partial_die has been called on this die. */ |
829 | unsigned int fixup_called : 1; | |
830 | ||
72bf9492 | 831 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 832 | sometimes a default name for unnamed DIEs. */ |
c906108c | 833 | char *name; |
72bf9492 | 834 | |
abc72ce4 DE |
835 | /* The linkage name, if present. */ |
836 | const char *linkage_name; | |
837 | ||
72bf9492 DJ |
838 | /* The scope to prepend to our children. This is generally |
839 | allocated on the comp_unit_obstack, so will disappear | |
840 | when this compilation unit leaves the cache. */ | |
841 | char *scope; | |
842 | ||
95554aad TT |
843 | /* Some data associated with the partial DIE. The tag determines |
844 | which field is live. */ | |
845 | union | |
846 | { | |
847 | /* The location description associated with this DIE, if any. */ | |
848 | struct dwarf_block *locdesc; | |
849 | /* The offset of an import, for DW_TAG_imported_unit. */ | |
850 | sect_offset offset; | |
851 | } d; | |
72bf9492 DJ |
852 | |
853 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
c906108c SS |
854 | CORE_ADDR lowpc; |
855 | CORE_ADDR highpc; | |
72bf9492 | 856 | |
93311388 | 857 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 858 | DW_AT_sibling, if any. */ |
abc72ce4 DE |
859 | /* NOTE: This member isn't strictly necessary, read_partial_die could |
860 | return DW_AT_sibling values to its caller load_partial_dies. */ | |
fe1b8b76 | 861 | gdb_byte *sibling; |
72bf9492 DJ |
862 | |
863 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
864 | DW_AT_specification (or DW_AT_abstract_origin or | |
865 | DW_AT_extension). */ | |
b64f50a1 | 866 | sect_offset spec_offset; |
72bf9492 DJ |
867 | |
868 | /* Pointers to this DIE's parent, first child, and next sibling, | |
869 | if any. */ | |
870 | struct partial_die_info *die_parent, *die_child, *die_sibling; | |
c906108c SS |
871 | }; |
872 | ||
0963b4bd | 873 | /* This data structure holds the information of an abbrev. */ |
c906108c SS |
874 | struct abbrev_info |
875 | { | |
876 | unsigned int number; /* number identifying abbrev */ | |
877 | enum dwarf_tag tag; /* dwarf tag */ | |
f3dd6933 DJ |
878 | unsigned short has_children; /* boolean */ |
879 | unsigned short num_attrs; /* number of attributes */ | |
c906108c SS |
880 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ |
881 | struct abbrev_info *next; /* next in chain */ | |
882 | }; | |
883 | ||
884 | struct attr_abbrev | |
885 | { | |
9d25dd43 DE |
886 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
887 | ENUM_BITFIELD(dwarf_form) form : 16; | |
c906108c SS |
888 | }; |
889 | ||
433df2d4 DE |
890 | /* Size of abbrev_table.abbrev_hash_table. */ |
891 | #define ABBREV_HASH_SIZE 121 | |
892 | ||
893 | /* Top level data structure to contain an abbreviation table. */ | |
894 | ||
895 | struct abbrev_table | |
896 | { | |
f4dc4d17 DE |
897 | /* Where the abbrev table came from. |
898 | This is used as a sanity check when the table is used. */ | |
433df2d4 DE |
899 | sect_offset offset; |
900 | ||
901 | /* Storage for the abbrev table. */ | |
902 | struct obstack abbrev_obstack; | |
903 | ||
904 | /* Hash table of abbrevs. | |
905 | This is an array of size ABBREV_HASH_SIZE allocated in abbrev_obstack. | |
906 | It could be statically allocated, but the previous code didn't so we | |
907 | don't either. */ | |
908 | struct abbrev_info **abbrevs; | |
909 | }; | |
910 | ||
0963b4bd | 911 | /* Attributes have a name and a value. */ |
b60c80d6 DJ |
912 | struct attribute |
913 | { | |
9d25dd43 | 914 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
8285870a JK |
915 | ENUM_BITFIELD(dwarf_form) form : 15; |
916 | ||
917 | /* Has DW_STRING already been updated by dwarf2_canonicalize_name? This | |
918 | field should be in u.str (existing only for DW_STRING) but it is kept | |
919 | here for better struct attribute alignment. */ | |
920 | unsigned int string_is_canonical : 1; | |
921 | ||
b60c80d6 DJ |
922 | union |
923 | { | |
924 | char *str; | |
925 | struct dwarf_block *blk; | |
43bbcdc2 PH |
926 | ULONGEST unsnd; |
927 | LONGEST snd; | |
b60c80d6 | 928 | CORE_ADDR addr; |
348e048f | 929 | struct signatured_type *signatured_type; |
b60c80d6 DJ |
930 | } |
931 | u; | |
932 | }; | |
933 | ||
0963b4bd | 934 | /* This data structure holds a complete die structure. */ |
c906108c SS |
935 | struct die_info |
936 | { | |
76815b17 DE |
937 | /* DWARF-2 tag for this DIE. */ |
938 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
939 | ||
940 | /* Number of attributes */ | |
98bfdba5 PA |
941 | unsigned char num_attrs; |
942 | ||
943 | /* True if we're presently building the full type name for the | |
944 | type derived from this DIE. */ | |
945 | unsigned char building_fullname : 1; | |
76815b17 DE |
946 | |
947 | /* Abbrev number */ | |
948 | unsigned int abbrev; | |
949 | ||
93311388 | 950 | /* Offset in .debug_info or .debug_types section. */ |
b64f50a1 | 951 | sect_offset offset; |
78ba4af6 JB |
952 | |
953 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
954 | points to this die's parent; CHILD points to the first child of | |
955 | this node; and all the children of a given node are chained | |
4950bc1c | 956 | together via their SIBLING fields. */ |
639d11d3 DC |
957 | struct die_info *child; /* Its first child, if any. */ |
958 | struct die_info *sibling; /* Its next sibling, if any. */ | |
959 | struct die_info *parent; /* Its parent, if any. */ | |
c906108c | 960 | |
b60c80d6 DJ |
961 | /* An array of attributes, with NUM_ATTRS elements. There may be |
962 | zero, but it's not common and zero-sized arrays are not | |
963 | sufficiently portable C. */ | |
964 | struct attribute attrs[1]; | |
c906108c SS |
965 | }; |
966 | ||
0963b4bd | 967 | /* Get at parts of an attribute structure. */ |
c906108c SS |
968 | |
969 | #define DW_STRING(attr) ((attr)->u.str) | |
8285870a | 970 | #define DW_STRING_IS_CANONICAL(attr) ((attr)->string_is_canonical) |
c906108c SS |
971 | #define DW_UNSND(attr) ((attr)->u.unsnd) |
972 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
973 | #define DW_SND(attr) ((attr)->u.snd) | |
974 | #define DW_ADDR(attr) ((attr)->u.addr) | |
348e048f | 975 | #define DW_SIGNATURED_TYPE(attr) ((attr)->u.signatured_type) |
c906108c | 976 | |
0963b4bd | 977 | /* Blocks are a bunch of untyped bytes. */ |
c906108c SS |
978 | struct dwarf_block |
979 | { | |
980 | unsigned int size; | |
1d6edc3c JK |
981 | |
982 | /* Valid only if SIZE is not zero. */ | |
fe1b8b76 | 983 | gdb_byte *data; |
c906108c SS |
984 | }; |
985 | ||
c906108c SS |
986 | #ifndef ATTR_ALLOC_CHUNK |
987 | #define ATTR_ALLOC_CHUNK 4 | |
988 | #endif | |
989 | ||
c906108c SS |
990 | /* Allocate fields for structs, unions and enums in this size. */ |
991 | #ifndef DW_FIELD_ALLOC_CHUNK | |
992 | #define DW_FIELD_ALLOC_CHUNK 4 | |
993 | #endif | |
994 | ||
c906108c SS |
995 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
996 | but this would require a corresponding change in unpack_field_as_long | |
997 | and friends. */ | |
998 | static int bits_per_byte = 8; | |
999 | ||
1000 | /* The routines that read and process dies for a C struct or C++ class | |
1001 | pass lists of data member fields and lists of member function fields | |
1002 | in an instance of a field_info structure, as defined below. */ | |
1003 | struct field_info | |
c5aa993b | 1004 | { |
0963b4bd | 1005 | /* List of data member and baseclasses fields. */ |
c5aa993b JM |
1006 | struct nextfield |
1007 | { | |
1008 | struct nextfield *next; | |
1009 | int accessibility; | |
1010 | int virtuality; | |
1011 | struct field field; | |
1012 | } | |
7d0ccb61 | 1013 | *fields, *baseclasses; |
c906108c | 1014 | |
7d0ccb61 | 1015 | /* Number of fields (including baseclasses). */ |
c5aa993b | 1016 | int nfields; |
c906108c | 1017 | |
c5aa993b JM |
1018 | /* Number of baseclasses. */ |
1019 | int nbaseclasses; | |
c906108c | 1020 | |
c5aa993b JM |
1021 | /* Set if the accesibility of one of the fields is not public. */ |
1022 | int non_public_fields; | |
c906108c | 1023 | |
c5aa993b JM |
1024 | /* Member function fields array, entries are allocated in the order they |
1025 | are encountered in the object file. */ | |
1026 | struct nextfnfield | |
1027 | { | |
1028 | struct nextfnfield *next; | |
1029 | struct fn_field fnfield; | |
1030 | } | |
1031 | *fnfields; | |
c906108c | 1032 | |
c5aa993b JM |
1033 | /* Member function fieldlist array, contains name of possibly overloaded |
1034 | member function, number of overloaded member functions and a pointer | |
1035 | to the head of the member function field chain. */ | |
1036 | struct fnfieldlist | |
1037 | { | |
1038 | char *name; | |
1039 | int length; | |
1040 | struct nextfnfield *head; | |
1041 | } | |
1042 | *fnfieldlists; | |
c906108c | 1043 | |
c5aa993b JM |
1044 | /* Number of entries in the fnfieldlists array. */ |
1045 | int nfnfields; | |
98751a41 JK |
1046 | |
1047 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
1048 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
1049 | struct typedef_field_list | |
1050 | { | |
1051 | struct typedef_field field; | |
1052 | struct typedef_field_list *next; | |
1053 | } | |
1054 | *typedef_field_list; | |
1055 | unsigned typedef_field_list_count; | |
c5aa993b | 1056 | }; |
c906108c | 1057 | |
10b3939b DJ |
1058 | /* One item on the queue of compilation units to read in full symbols |
1059 | for. */ | |
1060 | struct dwarf2_queue_item | |
1061 | { | |
1062 | struct dwarf2_per_cu_data *per_cu; | |
95554aad | 1063 | enum language pretend_language; |
10b3939b DJ |
1064 | struct dwarf2_queue_item *next; |
1065 | }; | |
1066 | ||
1067 | /* The current queue. */ | |
1068 | static struct dwarf2_queue_item *dwarf2_queue, *dwarf2_queue_tail; | |
1069 | ||
ae038cb0 DJ |
1070 | /* Loaded secondary compilation units are kept in memory until they |
1071 | have not been referenced for the processing of this many | |
1072 | compilation units. Set this to zero to disable caching. Cache | |
1073 | sizes of up to at least twenty will improve startup time for | |
1074 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
1075 | static int dwarf2_max_cache_age = 5; | |
920d2a44 AC |
1076 | static void |
1077 | show_dwarf2_max_cache_age (struct ui_file *file, int from_tty, | |
1078 | struct cmd_list_element *c, const char *value) | |
1079 | { | |
3e43a32a MS |
1080 | fprintf_filtered (file, _("The upper bound on the age of cached " |
1081 | "dwarf2 compilation units is %s.\n"), | |
920d2a44 AC |
1082 | value); |
1083 | } | |
1084 | ||
ae038cb0 | 1085 | |
0963b4bd | 1086 | /* Various complaints about symbol reading that don't abort the process. */ |
c906108c | 1087 | |
4d3c2250 KB |
1088 | static void |
1089 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
2e276125 | 1090 | { |
4d3c2250 | 1091 | complaint (&symfile_complaints, |
e2e0b3e5 | 1092 | _("statement list doesn't fit in .debug_line section")); |
4d3c2250 KB |
1093 | } |
1094 | ||
25e43795 DJ |
1095 | static void |
1096 | dwarf2_debug_line_missing_file_complaint (void) | |
1097 | { | |
1098 | complaint (&symfile_complaints, | |
1099 | _(".debug_line section has line data without a file")); | |
1100 | } | |
1101 | ||
59205f5a JB |
1102 | static void |
1103 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
1104 | { | |
1105 | complaint (&symfile_complaints, | |
3e43a32a MS |
1106 | _(".debug_line section has line " |
1107 | "program sequence without an end")); | |
59205f5a JB |
1108 | } |
1109 | ||
4d3c2250 KB |
1110 | static void |
1111 | dwarf2_complex_location_expr_complaint (void) | |
2e276125 | 1112 | { |
e2e0b3e5 | 1113 | complaint (&symfile_complaints, _("location expression too complex")); |
4d3c2250 KB |
1114 | } |
1115 | ||
4d3c2250 KB |
1116 | static void |
1117 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
1118 | int arg3) | |
2e276125 | 1119 | { |
4d3c2250 | 1120 | complaint (&symfile_complaints, |
3e43a32a MS |
1121 | _("const value length mismatch for '%s', got %d, expected %d"), |
1122 | arg1, arg2, arg3); | |
4d3c2250 KB |
1123 | } |
1124 | ||
1125 | static void | |
f664829e | 1126 | dwarf2_section_buffer_overflow_complaint (struct dwarf2_section_info *section) |
2e276125 | 1127 | { |
4d3c2250 | 1128 | complaint (&symfile_complaints, |
f664829e DE |
1129 | _("debug info runs off end of %s section" |
1130 | " [in module %s]"), | |
1131 | section->asection->name, | |
1132 | bfd_get_filename (section->asection->owner)); | |
4d3c2250 KB |
1133 | } |
1134 | ||
1135 | static void | |
1136 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
8e19ed76 | 1137 | { |
4d3c2250 | 1138 | complaint (&symfile_complaints, |
3e43a32a MS |
1139 | _("macro debug info contains a " |
1140 | "malformed macro definition:\n`%s'"), | |
4d3c2250 KB |
1141 | arg1); |
1142 | } | |
1143 | ||
1144 | static void | |
1145 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
8b2dbe47 | 1146 | { |
4d3c2250 | 1147 | complaint (&symfile_complaints, |
3e43a32a MS |
1148 | _("invalid attribute class or form for '%s' in '%s'"), |
1149 | arg1, arg2); | |
4d3c2250 | 1150 | } |
c906108c | 1151 | |
c906108c SS |
1152 | /* local function prototypes */ |
1153 | ||
4efb68b1 | 1154 | static void dwarf2_locate_sections (bfd *, asection *, void *); |
c906108c | 1155 | |
aaa75496 JB |
1156 | static void dwarf2_create_include_psymtab (char *, struct partial_symtab *, |
1157 | struct objfile *); | |
1158 | ||
918dd910 JK |
1159 | static void dwarf2_find_base_address (struct die_info *die, |
1160 | struct dwarf2_cu *cu); | |
1161 | ||
c67a9c90 | 1162 | static void dwarf2_build_psymtabs_hard (struct objfile *); |
c906108c | 1163 | |
72bf9492 DJ |
1164 | static void scan_partial_symbols (struct partial_die_info *, |
1165 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 1166 | int, struct dwarf2_cu *); |
c906108c | 1167 | |
72bf9492 DJ |
1168 | static void add_partial_symbol (struct partial_die_info *, |
1169 | struct dwarf2_cu *); | |
63d06c5c | 1170 | |
72bf9492 DJ |
1171 | static void add_partial_namespace (struct partial_die_info *pdi, |
1172 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1173 | int need_pc, struct dwarf2_cu *cu); |
63d06c5c | 1174 | |
5d7cb8df JK |
1175 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
1176 | CORE_ADDR *highpc, int need_pc, | |
1177 | struct dwarf2_cu *cu); | |
1178 | ||
72bf9492 DJ |
1179 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
1180 | struct dwarf2_cu *cu); | |
91c24f0a | 1181 | |
bc30ff58 JB |
1182 | static void add_partial_subprogram (struct partial_die_info *pdi, |
1183 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1184 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 1185 | |
a14ed312 | 1186 | static void dwarf2_psymtab_to_symtab (struct partial_symtab *); |
c906108c | 1187 | |
a14ed312 | 1188 | static void psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 1189 | |
433df2d4 DE |
1190 | static struct abbrev_info *abbrev_table_lookup_abbrev |
1191 | (const struct abbrev_table *, unsigned int); | |
1192 | ||
1193 | static struct abbrev_table *abbrev_table_read_table | |
1194 | (struct dwarf2_section_info *, sect_offset); | |
1195 | ||
1196 | static void abbrev_table_free (struct abbrev_table *); | |
1197 | ||
f4dc4d17 DE |
1198 | static void abbrev_table_free_cleanup (void *); |
1199 | ||
dee91e82 DE |
1200 | static void dwarf2_read_abbrevs (struct dwarf2_cu *, |
1201 | struct dwarf2_section_info *); | |
c906108c | 1202 | |
f3dd6933 | 1203 | static void dwarf2_free_abbrev_table (void *); |
c906108c | 1204 | |
6caca83c CC |
1205 | static unsigned int peek_abbrev_code (bfd *, gdb_byte *); |
1206 | ||
dee91e82 DE |
1207 | static struct partial_die_info *load_partial_dies |
1208 | (const struct die_reader_specs *, gdb_byte *, int); | |
72bf9492 | 1209 | |
dee91e82 DE |
1210 | static gdb_byte *read_partial_die (const struct die_reader_specs *, |
1211 | struct partial_die_info *, | |
1212 | struct abbrev_info *, | |
1213 | unsigned int, | |
1214 | gdb_byte *); | |
c906108c | 1215 | |
b64f50a1 | 1216 | static struct partial_die_info *find_partial_die (sect_offset, |
10b3939b | 1217 | struct dwarf2_cu *); |
72bf9492 DJ |
1218 | |
1219 | static void fixup_partial_die (struct partial_die_info *, | |
1220 | struct dwarf2_cu *); | |
1221 | ||
dee91e82 DE |
1222 | static gdb_byte *read_attribute (const struct die_reader_specs *, |
1223 | struct attribute *, struct attr_abbrev *, | |
1224 | gdb_byte *); | |
a8329558 | 1225 | |
fe1b8b76 | 1226 | static unsigned int read_1_byte (bfd *, gdb_byte *); |
c906108c | 1227 | |
fe1b8b76 | 1228 | static int read_1_signed_byte (bfd *, gdb_byte *); |
c906108c | 1229 | |
fe1b8b76 | 1230 | static unsigned int read_2_bytes (bfd *, gdb_byte *); |
c906108c | 1231 | |
fe1b8b76 | 1232 | static unsigned int read_4_bytes (bfd *, gdb_byte *); |
c906108c | 1233 | |
93311388 | 1234 | static ULONGEST read_8_bytes (bfd *, gdb_byte *); |
c906108c | 1235 | |
fe1b8b76 | 1236 | static CORE_ADDR read_address (bfd *, gdb_byte *ptr, struct dwarf2_cu *, |
891d2f0b | 1237 | unsigned int *); |
c906108c | 1238 | |
c764a876 DE |
1239 | static LONGEST read_initial_length (bfd *, gdb_byte *, unsigned int *); |
1240 | ||
1241 | static LONGEST read_checked_initial_length_and_offset | |
1242 | (bfd *, gdb_byte *, const struct comp_unit_head *, | |
1243 | unsigned int *, unsigned int *); | |
613e1657 | 1244 | |
fe1b8b76 | 1245 | static LONGEST read_offset (bfd *, gdb_byte *, const struct comp_unit_head *, |
c764a876 DE |
1246 | unsigned int *); |
1247 | ||
1248 | static LONGEST read_offset_1 (bfd *, gdb_byte *, unsigned int); | |
613e1657 | 1249 | |
f4dc4d17 DE |
1250 | static sect_offset read_abbrev_offset (struct dwarf2_section_info *, |
1251 | sect_offset); | |
1252 | ||
fe1b8b76 | 1253 | static gdb_byte *read_n_bytes (bfd *, gdb_byte *, unsigned int); |
c906108c | 1254 | |
9b1c24c8 | 1255 | static char *read_direct_string (bfd *, gdb_byte *, unsigned int *); |
c906108c | 1256 | |
fe1b8b76 JB |
1257 | static char *read_indirect_string (bfd *, gdb_byte *, |
1258 | const struct comp_unit_head *, | |
1259 | unsigned int *); | |
4bdf3d34 | 1260 | |
12df843f | 1261 | static ULONGEST read_unsigned_leb128 (bfd *, gdb_byte *, unsigned int *); |
c906108c | 1262 | |
12df843f | 1263 | static LONGEST read_signed_leb128 (bfd *, gdb_byte *, unsigned int *); |
c906108c | 1264 | |
3019eac3 DE |
1265 | static CORE_ADDR read_addr_index_from_leb128 (struct dwarf2_cu *, gdb_byte *, |
1266 | unsigned int *); | |
1267 | ||
1268 | static char *read_str_index (const struct die_reader_specs *reader, | |
1269 | struct dwarf2_cu *cu, ULONGEST str_index); | |
1270 | ||
e142c38c | 1271 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 1272 | |
e142c38c DJ |
1273 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
1274 | struct dwarf2_cu *); | |
c906108c | 1275 | |
348e048f | 1276 | static struct attribute *dwarf2_attr_no_follow (struct die_info *, |
45e58e77 | 1277 | unsigned int); |
348e048f | 1278 | |
05cf31d1 JB |
1279 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
1280 | struct dwarf2_cu *cu); | |
1281 | ||
e142c38c | 1282 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1283 | |
e142c38c | 1284 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1285 | struct dwarf2_cu **); |
63d06c5c | 1286 | |
debd256d JB |
1287 | static void free_line_header (struct line_header *lh); |
1288 | ||
aaa75496 JB |
1289 | static void add_file_name (struct line_header *, char *, unsigned int, |
1290 | unsigned int, unsigned int); | |
1291 | ||
3019eac3 DE |
1292 | static struct line_header *dwarf_decode_line_header (unsigned int offset, |
1293 | struct dwarf2_cu *cu); | |
debd256d | 1294 | |
f3f5162e DE |
1295 | static void dwarf_decode_lines (struct line_header *, const char *, |
1296 | struct dwarf2_cu *, struct partial_symtab *, | |
1297 | int); | |
c906108c | 1298 | |
72b9f47f | 1299 | static void dwarf2_start_subfile (char *, const char *, const char *); |
c906108c | 1300 | |
f4dc4d17 DE |
1301 | static void dwarf2_start_symtab (struct dwarf2_cu *, |
1302 | char *, char *, CORE_ADDR); | |
1303 | ||
a14ed312 | 1304 | static struct symbol *new_symbol (struct die_info *, struct type *, |
e7c27a73 | 1305 | struct dwarf2_cu *); |
c906108c | 1306 | |
34eaf542 TT |
1307 | static struct symbol *new_symbol_full (struct die_info *, struct type *, |
1308 | struct dwarf2_cu *, struct symbol *); | |
1309 | ||
a14ed312 | 1310 | static void dwarf2_const_value (struct attribute *, struct symbol *, |
e7c27a73 | 1311 | struct dwarf2_cu *); |
c906108c | 1312 | |
98bfdba5 PA |
1313 | static void dwarf2_const_value_attr (struct attribute *attr, |
1314 | struct type *type, | |
1315 | const char *name, | |
1316 | struct obstack *obstack, | |
12df843f | 1317 | struct dwarf2_cu *cu, LONGEST *value, |
98bfdba5 PA |
1318 | gdb_byte **bytes, |
1319 | struct dwarf2_locexpr_baton **baton); | |
2df3850c | 1320 | |
e7c27a73 | 1321 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1322 | |
b4ba55a1 JB |
1323 | static int need_gnat_info (struct dwarf2_cu *); |
1324 | ||
3e43a32a MS |
1325 | static struct type *die_descriptive_type (struct die_info *, |
1326 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1327 | |
1328 | static void set_descriptive_type (struct type *, struct die_info *, | |
1329 | struct dwarf2_cu *); | |
1330 | ||
e7c27a73 DJ |
1331 | static struct type *die_containing_type (struct die_info *, |
1332 | struct dwarf2_cu *); | |
c906108c | 1333 | |
673bfd45 DE |
1334 | static struct type *lookup_die_type (struct die_info *, struct attribute *, |
1335 | struct dwarf2_cu *); | |
c906108c | 1336 | |
f792889a | 1337 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1338 | |
673bfd45 DE |
1339 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1340 | ||
0d5cff50 | 1341 | static const char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1342 | |
6e70227d | 1343 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1344 | const char *suffix, int physname, |
1345 | struct dwarf2_cu *cu); | |
63d06c5c | 1346 | |
e7c27a73 | 1347 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1348 | |
348e048f DE |
1349 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1350 | ||
e7c27a73 | 1351 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1352 | |
e7c27a73 | 1353 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1354 | |
96408a79 SA |
1355 | static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu); |
1356 | ||
ff013f42 JK |
1357 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
1358 | struct dwarf2_cu *, struct partial_symtab *); | |
1359 | ||
a14ed312 | 1360 | static int dwarf2_get_pc_bounds (struct die_info *, |
d85a05f0 DJ |
1361 | CORE_ADDR *, CORE_ADDR *, struct dwarf2_cu *, |
1362 | struct partial_symtab *); | |
c906108c | 1363 | |
fae299cd DC |
1364 | static void get_scope_pc_bounds (struct die_info *, |
1365 | CORE_ADDR *, CORE_ADDR *, | |
1366 | struct dwarf2_cu *); | |
1367 | ||
801e3a5b JB |
1368 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
1369 | CORE_ADDR, struct dwarf2_cu *); | |
1370 | ||
a14ed312 | 1371 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1372 | struct dwarf2_cu *); |
c906108c | 1373 | |
a14ed312 | 1374 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1375 | struct type *, struct dwarf2_cu *); |
c906108c | 1376 | |
a14ed312 | 1377 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1378 | struct die_info *, struct type *, |
e7c27a73 | 1379 | struct dwarf2_cu *); |
c906108c | 1380 | |
a14ed312 | 1381 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1382 | struct type *, |
1383 | struct dwarf2_cu *); | |
c906108c | 1384 | |
134d01f1 | 1385 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1386 | |
e7c27a73 | 1387 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1388 | |
e7c27a73 | 1389 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1390 | |
5d7cb8df JK |
1391 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1392 | ||
27aa8d6a SW |
1393 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1394 | ||
f55ee35c JK |
1395 | static struct type *read_module_type (struct die_info *die, |
1396 | struct dwarf2_cu *cu); | |
1397 | ||
38d518c9 | 1398 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1399 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1400 | |
134d01f1 | 1401 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1402 | |
e7c27a73 | 1403 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 1404 | |
6e70227d | 1405 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1406 | struct dwarf2_cu *); |
1407 | ||
dee91e82 | 1408 | static struct die_info *read_die_and_children (const struct die_reader_specs *, |
93311388 | 1409 | gdb_byte *info_ptr, |
fe1b8b76 | 1410 | gdb_byte **new_info_ptr, |
639d11d3 DC |
1411 | struct die_info *parent); |
1412 | ||
dee91e82 | 1413 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *, |
93311388 | 1414 | gdb_byte *info_ptr, |
fe1b8b76 | 1415 | gdb_byte **new_info_ptr, |
639d11d3 DC |
1416 | struct die_info *parent); |
1417 | ||
3019eac3 DE |
1418 | static gdb_byte *read_full_die_1 (const struct die_reader_specs *, |
1419 | struct die_info **, gdb_byte *, int *, int); | |
1420 | ||
dee91e82 DE |
1421 | static gdb_byte *read_full_die (const struct die_reader_specs *, |
1422 | struct die_info **, gdb_byte *, int *); | |
93311388 | 1423 | |
e7c27a73 | 1424 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1425 | |
71c25dea TT |
1426 | static char *dwarf2_canonicalize_name (char *, struct dwarf2_cu *, |
1427 | struct obstack *); | |
1428 | ||
e142c38c | 1429 | static char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1430 | |
98bfdba5 PA |
1431 | static const char *dwarf2_full_name (char *name, |
1432 | struct die_info *die, | |
1433 | struct dwarf2_cu *cu); | |
1434 | ||
e142c38c | 1435 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1436 | struct dwarf2_cu **); |
9219021c | 1437 | |
f39c6ffd | 1438 | static const char *dwarf_tag_name (unsigned int); |
c906108c | 1439 | |
f39c6ffd | 1440 | static const char *dwarf_attr_name (unsigned int); |
c906108c | 1441 | |
f39c6ffd | 1442 | static const char *dwarf_form_name (unsigned int); |
c906108c | 1443 | |
a14ed312 | 1444 | static char *dwarf_bool_name (unsigned int); |
c906108c | 1445 | |
f39c6ffd | 1446 | static const char *dwarf_type_encoding_name (unsigned int); |
c906108c | 1447 | |
f9aca02d | 1448 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 1449 | |
d97bc12b DE |
1450 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1451 | ||
1452 | static void dump_die_for_error (struct die_info *); | |
1453 | ||
1454 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1455 | struct die_info *); | |
c906108c | 1456 | |
d97bc12b | 1457 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1458 | |
51545339 | 1459 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1460 | struct dwarf2_cu *); |
c906108c | 1461 | |
93311388 DE |
1462 | static int is_ref_attr (struct attribute *); |
1463 | ||
b64f50a1 | 1464 | static sect_offset dwarf2_get_ref_die_offset (struct attribute *); |
c906108c | 1465 | |
43bbcdc2 | 1466 | static LONGEST dwarf2_get_attr_constant_value (struct attribute *, int); |
a02abb62 | 1467 | |
348e048f DE |
1468 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
1469 | struct attribute *, | |
1470 | struct dwarf2_cu **); | |
1471 | ||
10b3939b DJ |
1472 | static struct die_info *follow_die_ref (struct die_info *, |
1473 | struct attribute *, | |
f2f0e013 | 1474 | struct dwarf2_cu **); |
c906108c | 1475 | |
348e048f DE |
1476 | static struct die_info *follow_die_sig (struct die_info *, |
1477 | struct attribute *, | |
1478 | struct dwarf2_cu **); | |
1479 | ||
6c83ed52 TT |
1480 | static struct signatured_type *lookup_signatured_type_at_offset |
1481 | (struct objfile *objfile, | |
b64f50a1 | 1482 | struct dwarf2_section_info *section, sect_offset offset); |
6c83ed52 | 1483 | |
e5fe5e75 | 1484 | static void load_full_type_unit (struct dwarf2_per_cu_data *per_cu); |
348e048f | 1485 | |
52dc124a | 1486 | static void read_signatured_type (struct signatured_type *); |
348e048f | 1487 | |
f4dc4d17 | 1488 | static struct type_unit_group *get_type_unit_group |
094b34ac | 1489 | (struct dwarf2_cu *, struct attribute *); |
f4dc4d17 DE |
1490 | |
1491 | static void build_type_unit_groups (die_reader_func_ftype *, void *); | |
1492 | ||
c906108c SS |
1493 | /* memory allocation interface */ |
1494 | ||
7b5a2f43 | 1495 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1496 | |
b60c80d6 | 1497 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1498 | |
09262596 DE |
1499 | static void dwarf_decode_macros (struct dwarf2_cu *, unsigned int, |
1500 | char *, int); | |
2e276125 | 1501 | |
8e19ed76 PS |
1502 | static int attr_form_is_block (struct attribute *); |
1503 | ||
3690dd37 JB |
1504 | static int attr_form_is_section_offset (struct attribute *); |
1505 | ||
1506 | static int attr_form_is_constant (struct attribute *); | |
1507 | ||
8cf6f0b1 TT |
1508 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
1509 | struct dwarf2_loclist_baton *baton, | |
1510 | struct attribute *attr); | |
1511 | ||
93e7bd98 DJ |
1512 | static void dwarf2_symbol_mark_computed (struct attribute *attr, |
1513 | struct symbol *sym, | |
1514 | struct dwarf2_cu *cu); | |
4c2df51b | 1515 | |
dee91e82 DE |
1516 | static gdb_byte *skip_one_die (const struct die_reader_specs *reader, |
1517 | gdb_byte *info_ptr, | |
1518 | struct abbrev_info *abbrev); | |
4bb7a0a7 | 1519 | |
72bf9492 DJ |
1520 | static void free_stack_comp_unit (void *); |
1521 | ||
72bf9492 DJ |
1522 | static hashval_t partial_die_hash (const void *item); |
1523 | ||
1524 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1525 | ||
ae038cb0 | 1526 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
b64f50a1 | 1527 | (sect_offset offset, struct objfile *objfile); |
ae038cb0 | 1528 | |
9816fde3 | 1529 | static void init_one_comp_unit (struct dwarf2_cu *cu, |
23745b47 | 1530 | struct dwarf2_per_cu_data *per_cu); |
9816fde3 JK |
1531 | |
1532 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, | |
95554aad TT |
1533 | struct die_info *comp_unit_die, |
1534 | enum language pretend_language); | |
93311388 | 1535 | |
68dc6402 | 1536 | static void free_heap_comp_unit (void *); |
ae038cb0 DJ |
1537 | |
1538 | static void free_cached_comp_units (void *); | |
1539 | ||
1540 | static void age_cached_comp_units (void); | |
1541 | ||
dee91e82 | 1542 | static void free_one_cached_comp_unit (struct dwarf2_per_cu_data *); |
ae038cb0 | 1543 | |
f792889a DJ |
1544 | static struct type *set_die_type (struct die_info *, struct type *, |
1545 | struct dwarf2_cu *); | |
1c379e20 | 1546 | |
ae038cb0 DJ |
1547 | static void create_all_comp_units (struct objfile *); |
1548 | ||
0e50663e | 1549 | static int create_all_type_units (struct objfile *); |
1fd400ff | 1550 | |
95554aad TT |
1551 | static void load_full_comp_unit (struct dwarf2_per_cu_data *, |
1552 | enum language); | |
10b3939b | 1553 | |
95554aad TT |
1554 | static void process_full_comp_unit (struct dwarf2_per_cu_data *, |
1555 | enum language); | |
10b3939b | 1556 | |
f4dc4d17 DE |
1557 | static void process_full_type_unit (struct dwarf2_per_cu_data *, |
1558 | enum language); | |
1559 | ||
10b3939b DJ |
1560 | static void dwarf2_add_dependence (struct dwarf2_cu *, |
1561 | struct dwarf2_per_cu_data *); | |
1562 | ||
ae038cb0 DJ |
1563 | static void dwarf2_mark (struct dwarf2_cu *); |
1564 | ||
1565 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1566 | ||
b64f50a1 | 1567 | static struct type *get_die_type_at_offset (sect_offset, |
673bfd45 DE |
1568 | struct dwarf2_per_cu_data *per_cu); |
1569 | ||
f792889a | 1570 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1571 | |
9291a0cd TT |
1572 | static void dwarf2_release_queue (void *dummy); |
1573 | ||
95554aad TT |
1574 | static void queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
1575 | enum language pretend_language); | |
1576 | ||
1577 | static int maybe_queue_comp_unit (struct dwarf2_cu *this_cu, | |
1578 | struct dwarf2_per_cu_data *per_cu, | |
1579 | enum language pretend_language); | |
9291a0cd | 1580 | |
a0f42c21 | 1581 | static void process_queue (void); |
9291a0cd TT |
1582 | |
1583 | static void find_file_and_directory (struct die_info *die, | |
1584 | struct dwarf2_cu *cu, | |
1585 | char **name, char **comp_dir); | |
1586 | ||
1587 | static char *file_full_name (int file, struct line_header *lh, | |
1588 | const char *comp_dir); | |
1589 | ||
fd820528 | 1590 | static void init_cutu_and_read_dies |
f4dc4d17 DE |
1591 | (struct dwarf2_per_cu_data *this_cu, struct abbrev_table *abbrev_table, |
1592 | int use_existing_cu, int keep, | |
3019eac3 DE |
1593 | die_reader_func_ftype *die_reader_func, void *data); |
1594 | ||
dee91e82 DE |
1595 | static void init_cutu_and_read_dies_simple |
1596 | (struct dwarf2_per_cu_data *this_cu, | |
1597 | die_reader_func_ftype *die_reader_func, void *data); | |
9291a0cd | 1598 | |
673bfd45 | 1599 | static htab_t allocate_signatured_type_table (struct objfile *objfile); |
1fd400ff | 1600 | |
3019eac3 DE |
1601 | static htab_t allocate_dwo_unit_table (struct objfile *objfile); |
1602 | ||
1603 | static struct dwo_unit *lookup_dwo_comp_unit | |
1604 | (struct dwarf2_per_cu_data *, char *, const char *, ULONGEST); | |
1605 | ||
1606 | static struct dwo_unit *lookup_dwo_type_unit | |
1607 | (struct signatured_type *, char *, const char *); | |
1608 | ||
1609 | static void free_dwo_file_cleanup (void *); | |
1610 | ||
1611 | static void munmap_section_buffer (struct dwarf2_section_info *); | |
1612 | ||
95554aad TT |
1613 | static void process_cu_includes (void); |
1614 | ||
9291a0cd TT |
1615 | #if WORDS_BIGENDIAN |
1616 | ||
1617 | /* Convert VALUE between big- and little-endian. */ | |
1618 | static offset_type | |
1619 | byte_swap (offset_type value) | |
1620 | { | |
1621 | offset_type result; | |
1622 | ||
1623 | result = (value & 0xff) << 24; | |
1624 | result |= (value & 0xff00) << 8; | |
1625 | result |= (value & 0xff0000) >> 8; | |
1626 | result |= (value & 0xff000000) >> 24; | |
1627 | return result; | |
1628 | } | |
1629 | ||
1630 | #define MAYBE_SWAP(V) byte_swap (V) | |
1631 | ||
1632 | #else | |
1633 | #define MAYBE_SWAP(V) (V) | |
1634 | #endif /* WORDS_BIGENDIAN */ | |
1635 | ||
1636 | /* The suffix for an index file. */ | |
1637 | #define INDEX_SUFFIX ".gdb-index" | |
1638 | ||
3da10d80 KS |
1639 | static const char *dwarf2_physname (char *name, struct die_info *die, |
1640 | struct dwarf2_cu *cu); | |
1641 | ||
c906108c | 1642 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
1643 | information and return true if we have enough to do something. |
1644 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
1645 | ELF names are used. */ | |
c906108c SS |
1646 | |
1647 | int | |
251d32d9 TG |
1648 | dwarf2_has_info (struct objfile *objfile, |
1649 | const struct dwarf2_debug_sections *names) | |
c906108c | 1650 | { |
be391dca TT |
1651 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); |
1652 | if (!dwarf2_per_objfile) | |
1653 | { | |
1654 | /* Initialize per-objfile state. */ | |
1655 | struct dwarf2_per_objfile *data | |
1656 | = obstack_alloc (&objfile->objfile_obstack, sizeof (*data)); | |
9a619af0 | 1657 | |
be391dca TT |
1658 | memset (data, 0, sizeof (*data)); |
1659 | set_objfile_data (objfile, dwarf2_objfile_data_key, data); | |
1660 | dwarf2_per_objfile = data; | |
6502dd73 | 1661 | |
251d32d9 TG |
1662 | bfd_map_over_sections (objfile->obfd, dwarf2_locate_sections, |
1663 | (void *) names); | |
be391dca TT |
1664 | dwarf2_per_objfile->objfile = objfile; |
1665 | } | |
1666 | return (dwarf2_per_objfile->info.asection != NULL | |
1667 | && dwarf2_per_objfile->abbrev.asection != NULL); | |
c906108c SS |
1668 | } |
1669 | ||
251d32d9 TG |
1670 | /* When loading sections, we look either for uncompressed section or for |
1671 | compressed section names. */ | |
233a11ab CS |
1672 | |
1673 | static int | |
251d32d9 TG |
1674 | section_is_p (const char *section_name, |
1675 | const struct dwarf2_section_names *names) | |
233a11ab | 1676 | { |
251d32d9 TG |
1677 | if (names->normal != NULL |
1678 | && strcmp (section_name, names->normal) == 0) | |
1679 | return 1; | |
1680 | if (names->compressed != NULL | |
1681 | && strcmp (section_name, names->compressed) == 0) | |
1682 | return 1; | |
1683 | return 0; | |
233a11ab CS |
1684 | } |
1685 | ||
c906108c SS |
1686 | /* This function is mapped across the sections and remembers the |
1687 | offset and size of each of the debugging sections we are interested | |
1688 | in. */ | |
1689 | ||
1690 | static void | |
251d32d9 | 1691 | dwarf2_locate_sections (bfd *abfd, asection *sectp, void *vnames) |
c906108c | 1692 | { |
251d32d9 TG |
1693 | const struct dwarf2_debug_sections *names; |
1694 | ||
1695 | if (vnames == NULL) | |
1696 | names = &dwarf2_elf_names; | |
1697 | else | |
1698 | names = (const struct dwarf2_debug_sections *) vnames; | |
1699 | ||
1700 | if (section_is_p (sectp->name, &names->info)) | |
c906108c | 1701 | { |
dce234bc PP |
1702 | dwarf2_per_objfile->info.asection = sectp; |
1703 | dwarf2_per_objfile->info.size = bfd_get_section_size (sectp); | |
c906108c | 1704 | } |
251d32d9 | 1705 | else if (section_is_p (sectp->name, &names->abbrev)) |
c906108c | 1706 | { |
dce234bc PP |
1707 | dwarf2_per_objfile->abbrev.asection = sectp; |
1708 | dwarf2_per_objfile->abbrev.size = bfd_get_section_size (sectp); | |
c906108c | 1709 | } |
251d32d9 | 1710 | else if (section_is_p (sectp->name, &names->line)) |
c906108c | 1711 | { |
dce234bc PP |
1712 | dwarf2_per_objfile->line.asection = sectp; |
1713 | dwarf2_per_objfile->line.size = bfd_get_section_size (sectp); | |
c906108c | 1714 | } |
251d32d9 | 1715 | else if (section_is_p (sectp->name, &names->loc)) |
c906108c | 1716 | { |
dce234bc PP |
1717 | dwarf2_per_objfile->loc.asection = sectp; |
1718 | dwarf2_per_objfile->loc.size = bfd_get_section_size (sectp); | |
c906108c | 1719 | } |
251d32d9 | 1720 | else if (section_is_p (sectp->name, &names->macinfo)) |
c906108c | 1721 | { |
dce234bc PP |
1722 | dwarf2_per_objfile->macinfo.asection = sectp; |
1723 | dwarf2_per_objfile->macinfo.size = bfd_get_section_size (sectp); | |
c906108c | 1724 | } |
cf2c3c16 TT |
1725 | else if (section_is_p (sectp->name, &names->macro)) |
1726 | { | |
1727 | dwarf2_per_objfile->macro.asection = sectp; | |
1728 | dwarf2_per_objfile->macro.size = bfd_get_section_size (sectp); | |
1729 | } | |
251d32d9 | 1730 | else if (section_is_p (sectp->name, &names->str)) |
c906108c | 1731 | { |
dce234bc PP |
1732 | dwarf2_per_objfile->str.asection = sectp; |
1733 | dwarf2_per_objfile->str.size = bfd_get_section_size (sectp); | |
c906108c | 1734 | } |
3019eac3 DE |
1735 | else if (section_is_p (sectp->name, &names->addr)) |
1736 | { | |
1737 | dwarf2_per_objfile->addr.asection = sectp; | |
1738 | dwarf2_per_objfile->addr.size = bfd_get_section_size (sectp); | |
1739 | } | |
251d32d9 | 1740 | else if (section_is_p (sectp->name, &names->frame)) |
b6af0555 | 1741 | { |
dce234bc PP |
1742 | dwarf2_per_objfile->frame.asection = sectp; |
1743 | dwarf2_per_objfile->frame.size = bfd_get_section_size (sectp); | |
b6af0555 | 1744 | } |
251d32d9 | 1745 | else if (section_is_p (sectp->name, &names->eh_frame)) |
b6af0555 | 1746 | { |
81b9b86e | 1747 | flagword aflag = bfd_get_section_flags (abfd, sectp); |
9a619af0 | 1748 | |
3799ccc6 EZ |
1749 | if (aflag & SEC_HAS_CONTENTS) |
1750 | { | |
dce234bc PP |
1751 | dwarf2_per_objfile->eh_frame.asection = sectp; |
1752 | dwarf2_per_objfile->eh_frame.size = bfd_get_section_size (sectp); | |
3799ccc6 | 1753 | } |
b6af0555 | 1754 | } |
251d32d9 | 1755 | else if (section_is_p (sectp->name, &names->ranges)) |
af34e669 | 1756 | { |
dce234bc PP |
1757 | dwarf2_per_objfile->ranges.asection = sectp; |
1758 | dwarf2_per_objfile->ranges.size = bfd_get_section_size (sectp); | |
af34e669 | 1759 | } |
251d32d9 | 1760 | else if (section_is_p (sectp->name, &names->types)) |
348e048f | 1761 | { |
8b70b953 TT |
1762 | struct dwarf2_section_info type_section; |
1763 | ||
1764 | memset (&type_section, 0, sizeof (type_section)); | |
1765 | type_section.asection = sectp; | |
1766 | type_section.size = bfd_get_section_size (sectp); | |
1767 | ||
1768 | VEC_safe_push (dwarf2_section_info_def, dwarf2_per_objfile->types, | |
1769 | &type_section); | |
348e048f | 1770 | } |
251d32d9 | 1771 | else if (section_is_p (sectp->name, &names->gdb_index)) |
9291a0cd TT |
1772 | { |
1773 | dwarf2_per_objfile->gdb_index.asection = sectp; | |
1774 | dwarf2_per_objfile->gdb_index.size = bfd_get_section_size (sectp); | |
1775 | } | |
dce234bc | 1776 | |
72dca2f5 FR |
1777 | if ((bfd_get_section_flags (abfd, sectp) & SEC_LOAD) |
1778 | && bfd_section_vma (abfd, sectp) == 0) | |
1779 | dwarf2_per_objfile->has_section_at_zero = 1; | |
c906108c SS |
1780 | } |
1781 | ||
dce234bc PP |
1782 | /* Decompress a section that was compressed using zlib. Store the |
1783 | decompressed buffer, and its size, in OUTBUF and OUTSIZE. */ | |
233a11ab CS |
1784 | |
1785 | static void | |
dce234bc PP |
1786 | zlib_decompress_section (struct objfile *objfile, asection *sectp, |
1787 | gdb_byte **outbuf, bfd_size_type *outsize) | |
1788 | { | |
3019eac3 | 1789 | bfd *abfd = sectp->owner; |
dce234bc PP |
1790 | #ifndef HAVE_ZLIB_H |
1791 | error (_("Support for zlib-compressed DWARF data (from '%s') " | |
1792 | "is disabled in this copy of GDB"), | |
1793 | bfd_get_filename (abfd)); | |
1794 | #else | |
1795 | bfd_size_type compressed_size = bfd_get_section_size (sectp); | |
1796 | gdb_byte *compressed_buffer = xmalloc (compressed_size); | |
affddf13 | 1797 | struct cleanup *cleanup = make_cleanup (xfree, compressed_buffer); |
dce234bc PP |
1798 | bfd_size_type uncompressed_size; |
1799 | gdb_byte *uncompressed_buffer; | |
1800 | z_stream strm; | |
1801 | int rc; | |
1802 | int header_size = 12; | |
1803 | ||
1804 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 | |
3e43a32a MS |
1805 | || bfd_bread (compressed_buffer, |
1806 | compressed_size, abfd) != compressed_size) | |
dce234bc PP |
1807 | error (_("Dwarf Error: Can't read DWARF data from '%s'"), |
1808 | bfd_get_filename (abfd)); | |
1809 | ||
1810 | /* Read the zlib header. In this case, it should be "ZLIB" followed | |
1811 | by the uncompressed section size, 8 bytes in big-endian order. */ | |
1812 | if (compressed_size < header_size | |
1813 | || strncmp (compressed_buffer, "ZLIB", 4) != 0) | |
1814 | error (_("Dwarf Error: Corrupt DWARF ZLIB header from '%s'"), | |
1815 | bfd_get_filename (abfd)); | |
1816 | uncompressed_size = compressed_buffer[4]; uncompressed_size <<= 8; | |
1817 | uncompressed_size += compressed_buffer[5]; uncompressed_size <<= 8; | |
1818 | uncompressed_size += compressed_buffer[6]; uncompressed_size <<= 8; | |
1819 | uncompressed_size += compressed_buffer[7]; uncompressed_size <<= 8; | |
1820 | uncompressed_size += compressed_buffer[8]; uncompressed_size <<= 8; | |
1821 | uncompressed_size += compressed_buffer[9]; uncompressed_size <<= 8; | |
1822 | uncompressed_size += compressed_buffer[10]; uncompressed_size <<= 8; | |
1823 | uncompressed_size += compressed_buffer[11]; | |
1824 | ||
1825 | /* It is possible the section consists of several compressed | |
1826 | buffers concatenated together, so we uncompress in a loop. */ | |
1827 | strm.zalloc = NULL; | |
1828 | strm.zfree = NULL; | |
1829 | strm.opaque = NULL; | |
1830 | strm.avail_in = compressed_size - header_size; | |
1831 | strm.next_in = (Bytef*) compressed_buffer + header_size; | |
1832 | strm.avail_out = uncompressed_size; | |
1833 | uncompressed_buffer = obstack_alloc (&objfile->objfile_obstack, | |
1834 | uncompressed_size); | |
1835 | rc = inflateInit (&strm); | |
1836 | while (strm.avail_in > 0) | |
1837 | { | |
1838 | if (rc != Z_OK) | |
1839 | error (_("Dwarf Error: setting up DWARF uncompression in '%s': %d"), | |
1840 | bfd_get_filename (abfd), rc); | |
1841 | strm.next_out = ((Bytef*) uncompressed_buffer | |
1842 | + (uncompressed_size - strm.avail_out)); | |
1843 | rc = inflate (&strm, Z_FINISH); | |
1844 | if (rc != Z_STREAM_END) | |
1845 | error (_("Dwarf Error: zlib error uncompressing from '%s': %d"), | |
1846 | bfd_get_filename (abfd), rc); | |
1847 | rc = inflateReset (&strm); | |
1848 | } | |
1849 | rc = inflateEnd (&strm); | |
1850 | if (rc != Z_OK | |
1851 | || strm.avail_out != 0) | |
1852 | error (_("Dwarf Error: concluding DWARF uncompression in '%s': %d"), | |
1853 | bfd_get_filename (abfd), rc); | |
1854 | ||
affddf13 | 1855 | do_cleanups (cleanup); |
dce234bc PP |
1856 | *outbuf = uncompressed_buffer; |
1857 | *outsize = uncompressed_size; | |
1858 | #endif | |
233a11ab CS |
1859 | } |
1860 | ||
fceca515 DE |
1861 | /* A helper function that decides whether a section is empty, |
1862 | or not present. */ | |
9e0ac564 TT |
1863 | |
1864 | static int | |
1865 | dwarf2_section_empty_p (struct dwarf2_section_info *info) | |
1866 | { | |
1867 | return info->asection == NULL || info->size == 0; | |
1868 | } | |
1869 | ||
3019eac3 DE |
1870 | /* Read the contents of the section INFO. |
1871 | OBJFILE is the main object file, but not necessarily the file where | |
1872 | the section comes from. E.g., for DWO files INFO->asection->owner | |
1873 | is the bfd of the DWO file. | |
dce234bc | 1874 | If the section is compressed, uncompress it before returning. */ |
c906108c | 1875 | |
dce234bc PP |
1876 | static void |
1877 | dwarf2_read_section (struct objfile *objfile, struct dwarf2_section_info *info) | |
c906108c | 1878 | { |
dce234bc | 1879 | asection *sectp = info->asection; |
3019eac3 | 1880 | bfd *abfd; |
dce234bc PP |
1881 | gdb_byte *buf, *retbuf; |
1882 | unsigned char header[4]; | |
c906108c | 1883 | |
be391dca TT |
1884 | if (info->readin) |
1885 | return; | |
dce234bc | 1886 | info->buffer = NULL; |
b315ab21 | 1887 | info->map_addr = NULL; |
be391dca | 1888 | info->readin = 1; |
188dd5d6 | 1889 | |
9e0ac564 | 1890 | if (dwarf2_section_empty_p (info)) |
dce234bc | 1891 | return; |
c906108c | 1892 | |
3019eac3 DE |
1893 | /* Note that ABFD may not be from OBJFILE, e.g. a DWO section. */ |
1894 | abfd = sectp->owner; | |
1895 | ||
dce234bc PP |
1896 | /* Check if the file has a 4-byte header indicating compression. */ |
1897 | if (info->size > sizeof (header) | |
1898 | && bfd_seek (abfd, sectp->filepos, SEEK_SET) == 0 | |
1899 | && bfd_bread (header, sizeof (header), abfd) == sizeof (header)) | |
1900 | { | |
1901 | /* Upon decompression, update the buffer and its size. */ | |
1902 | if (strncmp (header, "ZLIB", sizeof (header)) == 0) | |
1903 | { | |
1904 | zlib_decompress_section (objfile, sectp, &info->buffer, | |
1905 | &info->size); | |
1906 | return; | |
1907 | } | |
1908 | } | |
4bdf3d34 | 1909 | |
dce234bc PP |
1910 | #ifdef HAVE_MMAP |
1911 | if (pagesize == 0) | |
1912 | pagesize = getpagesize (); | |
2e276125 | 1913 | |
dce234bc PP |
1914 | /* Only try to mmap sections which are large enough: we don't want to |
1915 | waste space due to fragmentation. Also, only try mmap for sections | |
1916 | without relocations. */ | |
1917 | ||
1918 | if (info->size > 4 * pagesize && (sectp->flags & SEC_RELOC) == 0) | |
1919 | { | |
b315ab21 TG |
1920 | info->buffer = bfd_mmap (abfd, 0, info->size, PROT_READ, |
1921 | MAP_PRIVATE, sectp->filepos, | |
1922 | &info->map_addr, &info->map_len); | |
dce234bc | 1923 | |
b315ab21 | 1924 | if ((caddr_t)info->buffer != MAP_FAILED) |
dce234bc | 1925 | { |
be391dca | 1926 | #if HAVE_POSIX_MADVISE |
b315ab21 | 1927 | posix_madvise (info->map_addr, info->map_len, POSIX_MADV_WILLNEED); |
be391dca | 1928 | #endif |
dce234bc PP |
1929 | return; |
1930 | } | |
1931 | } | |
1932 | #endif | |
1933 | ||
1934 | /* If we get here, we are a normal, not-compressed section. */ | |
1935 | info->buffer = buf | |
1936 | = obstack_alloc (&objfile->objfile_obstack, info->size); | |
1937 | ||
1938 | /* When debugging .o files, we may need to apply relocations; see | |
1939 | http://sourceware.org/ml/gdb-patches/2002-04/msg00136.html . | |
1940 | We never compress sections in .o files, so we only need to | |
1941 | try this when the section is not compressed. */ | |
ac8035ab | 1942 | retbuf = symfile_relocate_debug_section (objfile, sectp, buf); |
dce234bc PP |
1943 | if (retbuf != NULL) |
1944 | { | |
1945 | info->buffer = retbuf; | |
1946 | return; | |
1947 | } | |
1948 | ||
1949 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 | |
1950 | || bfd_bread (buf, info->size, abfd) != info->size) | |
1951 | error (_("Dwarf Error: Can't read DWARF data from '%s'"), | |
1952 | bfd_get_filename (abfd)); | |
1953 | } | |
1954 | ||
9e0ac564 TT |
1955 | /* A helper function that returns the size of a section in a safe way. |
1956 | If you are positive that the section has been read before using the | |
1957 | size, then it is safe to refer to the dwarf2_section_info object's | |
1958 | "size" field directly. In other cases, you must call this | |
1959 | function, because for compressed sections the size field is not set | |
1960 | correctly until the section has been read. */ | |
1961 | ||
1962 | static bfd_size_type | |
1963 | dwarf2_section_size (struct objfile *objfile, | |
1964 | struct dwarf2_section_info *info) | |
1965 | { | |
1966 | if (!info->readin) | |
1967 | dwarf2_read_section (objfile, info); | |
1968 | return info->size; | |
1969 | } | |
1970 | ||
dce234bc | 1971 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 1972 | SECTION_NAME. */ |
af34e669 | 1973 | |
dce234bc | 1974 | void |
3017a003 TG |
1975 | dwarf2_get_section_info (struct objfile *objfile, |
1976 | enum dwarf2_section_enum sect, | |
dce234bc PP |
1977 | asection **sectp, gdb_byte **bufp, |
1978 | bfd_size_type *sizep) | |
1979 | { | |
1980 | struct dwarf2_per_objfile *data | |
1981 | = objfile_data (objfile, dwarf2_objfile_data_key); | |
1982 | struct dwarf2_section_info *info; | |
a3b2a86b TT |
1983 | |
1984 | /* We may see an objfile without any DWARF, in which case we just | |
1985 | return nothing. */ | |
1986 | if (data == NULL) | |
1987 | { | |
1988 | *sectp = NULL; | |
1989 | *bufp = NULL; | |
1990 | *sizep = 0; | |
1991 | return; | |
1992 | } | |
3017a003 TG |
1993 | switch (sect) |
1994 | { | |
1995 | case DWARF2_DEBUG_FRAME: | |
1996 | info = &data->frame; | |
1997 | break; | |
1998 | case DWARF2_EH_FRAME: | |
1999 | info = &data->eh_frame; | |
2000 | break; | |
2001 | default: | |
2002 | gdb_assert_not_reached ("unexpected section"); | |
2003 | } | |
dce234bc | 2004 | |
9e0ac564 | 2005 | dwarf2_read_section (objfile, info); |
dce234bc PP |
2006 | |
2007 | *sectp = info->asection; | |
2008 | *bufp = info->buffer; | |
2009 | *sizep = info->size; | |
2010 | } | |
2011 | ||
9291a0cd | 2012 | \f |
7b9f3c50 DE |
2013 | /* DWARF quick_symbols_functions support. */ |
2014 | ||
2015 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
2016 | unique line tables, so we maintain a separate table of all .debug_line | |
2017 | derived entries to support the sharing. | |
2018 | All the quick functions need is the list of file names. We discard the | |
2019 | line_header when we're done and don't need to record it here. */ | |
2020 | struct quick_file_names | |
2021 | { | |
094b34ac DE |
2022 | /* The data used to construct the hash key. */ |
2023 | struct stmt_list_hash hash; | |
7b9f3c50 DE |
2024 | |
2025 | /* The number of entries in file_names, real_names. */ | |
2026 | unsigned int num_file_names; | |
2027 | ||
2028 | /* The file names from the line table, after being run through | |
2029 | file_full_name. */ | |
2030 | const char **file_names; | |
2031 | ||
2032 | /* The file names from the line table after being run through | |
2033 | gdb_realpath. These are computed lazily. */ | |
2034 | const char **real_names; | |
2035 | }; | |
2036 | ||
2037 | /* When using the index (and thus not using psymtabs), each CU has an | |
2038 | object of this type. This is used to hold information needed by | |
2039 | the various "quick" methods. */ | |
2040 | struct dwarf2_per_cu_quick_data | |
2041 | { | |
2042 | /* The file table. This can be NULL if there was no file table | |
2043 | or it's currently not read in. | |
2044 | NOTE: This points into dwarf2_per_objfile->quick_file_names_table. */ | |
2045 | struct quick_file_names *file_names; | |
2046 | ||
2047 | /* The corresponding symbol table. This is NULL if symbols for this | |
2048 | CU have not yet been read. */ | |
2049 | struct symtab *symtab; | |
2050 | ||
2051 | /* A temporary mark bit used when iterating over all CUs in | |
2052 | expand_symtabs_matching. */ | |
2053 | unsigned int mark : 1; | |
2054 | ||
2055 | /* True if we've tried to read the file table and found there isn't one. | |
2056 | There will be no point in trying to read it again next time. */ | |
2057 | unsigned int no_file_data : 1; | |
2058 | }; | |
2059 | ||
094b34ac DE |
2060 | /* Utility hash function for a stmt_list_hash. */ |
2061 | ||
2062 | static hashval_t | |
2063 | hash_stmt_list_entry (const struct stmt_list_hash *stmt_list_hash) | |
2064 | { | |
2065 | hashval_t v = 0; | |
2066 | ||
2067 | if (stmt_list_hash->dwo_unit != NULL) | |
2068 | v += (uintptr_t) stmt_list_hash->dwo_unit->dwo_file; | |
2069 | v += stmt_list_hash->line_offset.sect_off; | |
2070 | return v; | |
2071 | } | |
2072 | ||
2073 | /* Utility equality function for a stmt_list_hash. */ | |
2074 | ||
2075 | static int | |
2076 | eq_stmt_list_entry (const struct stmt_list_hash *lhs, | |
2077 | const struct stmt_list_hash *rhs) | |
2078 | { | |
2079 | if ((lhs->dwo_unit != NULL) != (rhs->dwo_unit != NULL)) | |
2080 | return 0; | |
2081 | if (lhs->dwo_unit != NULL | |
2082 | && lhs->dwo_unit->dwo_file != rhs->dwo_unit->dwo_file) | |
2083 | return 0; | |
2084 | ||
2085 | return lhs->line_offset.sect_off == rhs->line_offset.sect_off; | |
2086 | } | |
2087 | ||
7b9f3c50 DE |
2088 | /* Hash function for a quick_file_names. */ |
2089 | ||
2090 | static hashval_t | |
2091 | hash_file_name_entry (const void *e) | |
2092 | { | |
2093 | const struct quick_file_names *file_data = e; | |
2094 | ||
094b34ac | 2095 | return hash_stmt_list_entry (&file_data->hash); |
7b9f3c50 DE |
2096 | } |
2097 | ||
2098 | /* Equality function for a quick_file_names. */ | |
2099 | ||
2100 | static int | |
2101 | eq_file_name_entry (const void *a, const void *b) | |
2102 | { | |
2103 | const struct quick_file_names *ea = a; | |
2104 | const struct quick_file_names *eb = b; | |
2105 | ||
094b34ac | 2106 | return eq_stmt_list_entry (&ea->hash, &eb->hash); |
7b9f3c50 DE |
2107 | } |
2108 | ||
2109 | /* Delete function for a quick_file_names. */ | |
2110 | ||
2111 | static void | |
2112 | delete_file_name_entry (void *e) | |
2113 | { | |
2114 | struct quick_file_names *file_data = e; | |
2115 | int i; | |
2116 | ||
2117 | for (i = 0; i < file_data->num_file_names; ++i) | |
2118 | { | |
2119 | xfree ((void*) file_data->file_names[i]); | |
2120 | if (file_data->real_names) | |
2121 | xfree ((void*) file_data->real_names[i]); | |
2122 | } | |
2123 | ||
2124 | /* The space for the struct itself lives on objfile_obstack, | |
2125 | so we don't free it here. */ | |
2126 | } | |
2127 | ||
2128 | /* Create a quick_file_names hash table. */ | |
2129 | ||
2130 | static htab_t | |
2131 | create_quick_file_names_table (unsigned int nr_initial_entries) | |
2132 | { | |
2133 | return htab_create_alloc (nr_initial_entries, | |
2134 | hash_file_name_entry, eq_file_name_entry, | |
2135 | delete_file_name_entry, xcalloc, xfree); | |
2136 | } | |
9291a0cd | 2137 | |
918dd910 JK |
2138 | /* Read in PER_CU->CU. This function is unrelated to symtabs, symtab would |
2139 | have to be created afterwards. You should call age_cached_comp_units after | |
2140 | processing PER_CU->CU. dw2_setup must have been already called. */ | |
2141 | ||
2142 | static void | |
2143 | load_cu (struct dwarf2_per_cu_data *per_cu) | |
2144 | { | |
3019eac3 | 2145 | if (per_cu->is_debug_types) |
e5fe5e75 | 2146 | load_full_type_unit (per_cu); |
918dd910 | 2147 | else |
95554aad | 2148 | load_full_comp_unit (per_cu, language_minimal); |
918dd910 | 2149 | |
918dd910 | 2150 | gdb_assert (per_cu->cu != NULL); |
2dc860c0 DE |
2151 | |
2152 | dwarf2_find_base_address (per_cu->cu->dies, per_cu->cu); | |
918dd910 JK |
2153 | } |
2154 | ||
a0f42c21 | 2155 | /* Read in the symbols for PER_CU. */ |
2fdf6df6 | 2156 | |
9291a0cd | 2157 | static void |
a0f42c21 | 2158 | dw2_do_instantiate_symtab (struct dwarf2_per_cu_data *per_cu) |
9291a0cd TT |
2159 | { |
2160 | struct cleanup *back_to; | |
2161 | ||
f4dc4d17 DE |
2162 | /* Skip type_unit_groups, reading the type units they contain |
2163 | is handled elsewhere. */ | |
2164 | if (IS_TYPE_UNIT_GROUP (per_cu)) | |
2165 | return; | |
2166 | ||
9291a0cd TT |
2167 | back_to = make_cleanup (dwarf2_release_queue, NULL); |
2168 | ||
95554aad TT |
2169 | if (dwarf2_per_objfile->using_index |
2170 | ? per_cu->v.quick->symtab == NULL | |
2171 | : (per_cu->v.psymtab == NULL || !per_cu->v.psymtab->readin)) | |
2172 | { | |
2173 | queue_comp_unit (per_cu, language_minimal); | |
2174 | load_cu (per_cu); | |
2175 | } | |
9291a0cd | 2176 | |
a0f42c21 | 2177 | process_queue (); |
9291a0cd TT |
2178 | |
2179 | /* Age the cache, releasing compilation units that have not | |
2180 | been used recently. */ | |
2181 | age_cached_comp_units (); | |
2182 | ||
2183 | do_cleanups (back_to); | |
2184 | } | |
2185 | ||
2186 | /* Ensure that the symbols for PER_CU have been read in. OBJFILE is | |
2187 | the objfile from which this CU came. Returns the resulting symbol | |
2188 | table. */ | |
2fdf6df6 | 2189 | |
9291a0cd | 2190 | static struct symtab * |
a0f42c21 | 2191 | dw2_instantiate_symtab (struct dwarf2_per_cu_data *per_cu) |
9291a0cd | 2192 | { |
95554aad | 2193 | gdb_assert (dwarf2_per_objfile->using_index); |
9291a0cd TT |
2194 | if (!per_cu->v.quick->symtab) |
2195 | { | |
2196 | struct cleanup *back_to = make_cleanup (free_cached_comp_units, NULL); | |
2197 | increment_reading_symtab (); | |
a0f42c21 | 2198 | dw2_do_instantiate_symtab (per_cu); |
95554aad | 2199 | process_cu_includes (); |
9291a0cd TT |
2200 | do_cleanups (back_to); |
2201 | } | |
2202 | return per_cu->v.quick->symtab; | |
2203 | } | |
2204 | ||
f4dc4d17 DE |
2205 | /* Return the CU given its index. |
2206 | ||
2207 | This is intended for loops like: | |
2208 | ||
2209 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
2210 | + dwarf2_per_objfile->n_type_units); ++i) | |
2211 | { | |
2212 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); | |
2213 | ||
2214 | ...; | |
2215 | } | |
2216 | */ | |
2fdf6df6 | 2217 | |
1fd400ff TT |
2218 | static struct dwarf2_per_cu_data * |
2219 | dw2_get_cu (int index) | |
2220 | { | |
2221 | if (index >= dwarf2_per_objfile->n_comp_units) | |
2222 | { | |
f4dc4d17 | 2223 | index -= dwarf2_per_objfile->n_comp_units; |
094b34ac DE |
2224 | gdb_assert (index < dwarf2_per_objfile->n_type_units); |
2225 | return &dwarf2_per_objfile->all_type_units[index]->per_cu; | |
f4dc4d17 DE |
2226 | } |
2227 | ||
2228 | return dwarf2_per_objfile->all_comp_units[index]; | |
2229 | } | |
2230 | ||
2231 | /* Return the primary CU given its index. | |
2232 | The difference between this function and dw2_get_cu is in the handling | |
2233 | of type units (TUs). Here we return the type_unit_group object. | |
2234 | ||
2235 | This is intended for loops like: | |
2236 | ||
2237 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
2238 | + dwarf2_per_objfile->n_type_unit_groups); ++i) | |
2239 | { | |
2240 | struct dwarf2_per_cu_data *per_cu = dw2_get_primary_cu (i); | |
2241 | ||
2242 | ...; | |
2243 | } | |
2244 | */ | |
2245 | ||
2246 | static struct dwarf2_per_cu_data * | |
2247 | dw2_get_primary_cu (int index) | |
2248 | { | |
2249 | if (index >= dwarf2_per_objfile->n_comp_units) | |
2250 | { | |
1fd400ff | 2251 | index -= dwarf2_per_objfile->n_comp_units; |
094b34ac DE |
2252 | gdb_assert (index < dwarf2_per_objfile->n_type_unit_groups); |
2253 | return &dwarf2_per_objfile->all_type_unit_groups[index]->per_cu; | |
1fd400ff | 2254 | } |
f4dc4d17 | 2255 | |
1fd400ff TT |
2256 | return dwarf2_per_objfile->all_comp_units[index]; |
2257 | } | |
2258 | ||
9291a0cd TT |
2259 | /* A helper function that knows how to read a 64-bit value in a way |
2260 | that doesn't make gdb die. Returns 1 if the conversion went ok, 0 | |
2261 | otherwise. */ | |
2fdf6df6 | 2262 | |
9291a0cd TT |
2263 | static int |
2264 | extract_cu_value (const char *bytes, ULONGEST *result) | |
2265 | { | |
2266 | if (sizeof (ULONGEST) < 8) | |
2267 | { | |
2268 | int i; | |
2269 | ||
2270 | /* Ignore the upper 4 bytes if they are all zero. */ | |
2271 | for (i = 0; i < 4; ++i) | |
2272 | if (bytes[i + 4] != 0) | |
2273 | return 0; | |
2274 | ||
2275 | *result = extract_unsigned_integer (bytes, 4, BFD_ENDIAN_LITTLE); | |
2276 | } | |
2277 | else | |
2278 | *result = extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
2279 | return 1; | |
2280 | } | |
2281 | ||
2282 | /* Read the CU list from the mapped index, and use it to create all | |
2283 | the CU objects for this objfile. Return 0 if something went wrong, | |
2284 | 1 if everything went ok. */ | |
2fdf6df6 | 2285 | |
9291a0cd | 2286 | static int |
1fd400ff TT |
2287 | create_cus_from_index (struct objfile *objfile, const gdb_byte *cu_list, |
2288 | offset_type cu_list_elements) | |
9291a0cd TT |
2289 | { |
2290 | offset_type i; | |
9291a0cd TT |
2291 | |
2292 | dwarf2_per_objfile->n_comp_units = cu_list_elements / 2; | |
2293 | dwarf2_per_objfile->all_comp_units | |
2294 | = obstack_alloc (&objfile->objfile_obstack, | |
2295 | dwarf2_per_objfile->n_comp_units | |
2296 | * sizeof (struct dwarf2_per_cu_data *)); | |
2297 | ||
2298 | for (i = 0; i < cu_list_elements; i += 2) | |
2299 | { | |
2300 | struct dwarf2_per_cu_data *the_cu; | |
2301 | ULONGEST offset, length; | |
2302 | ||
2303 | if (!extract_cu_value (cu_list, &offset) | |
2304 | || !extract_cu_value (cu_list + 8, &length)) | |
2305 | return 0; | |
2306 | cu_list += 2 * 8; | |
2307 | ||
2308 | the_cu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2309 | struct dwarf2_per_cu_data); | |
b64f50a1 | 2310 | the_cu->offset.sect_off = offset; |
9291a0cd TT |
2311 | the_cu->length = length; |
2312 | the_cu->objfile = objfile; | |
3019eac3 | 2313 | the_cu->info_or_types_section = &dwarf2_per_objfile->info; |
9291a0cd TT |
2314 | the_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
2315 | struct dwarf2_per_cu_quick_data); | |
2316 | dwarf2_per_objfile->all_comp_units[i / 2] = the_cu; | |
2317 | } | |
2318 | ||
2319 | return 1; | |
2320 | } | |
2321 | ||
1fd400ff | 2322 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 2323 | |
1fd400ff | 2324 | static int |
673bfd45 | 2325 | create_signatured_type_table_from_index (struct objfile *objfile, |
8b70b953 | 2326 | struct dwarf2_section_info *section, |
673bfd45 DE |
2327 | const gdb_byte *bytes, |
2328 | offset_type elements) | |
1fd400ff TT |
2329 | { |
2330 | offset_type i; | |
673bfd45 | 2331 | htab_t sig_types_hash; |
1fd400ff | 2332 | |
d467dd73 DE |
2333 | dwarf2_per_objfile->n_type_units = elements / 3; |
2334 | dwarf2_per_objfile->all_type_units | |
1fd400ff | 2335 | = obstack_alloc (&objfile->objfile_obstack, |
d467dd73 | 2336 | dwarf2_per_objfile->n_type_units |
b4dd5633 | 2337 | * sizeof (struct signatured_type *)); |
1fd400ff | 2338 | |
673bfd45 | 2339 | sig_types_hash = allocate_signatured_type_table (objfile); |
1fd400ff TT |
2340 | |
2341 | for (i = 0; i < elements; i += 3) | |
2342 | { | |
52dc124a DE |
2343 | struct signatured_type *sig_type; |
2344 | ULONGEST offset, type_offset_in_tu, signature; | |
1fd400ff TT |
2345 | void **slot; |
2346 | ||
2347 | if (!extract_cu_value (bytes, &offset) | |
52dc124a | 2348 | || !extract_cu_value (bytes + 8, &type_offset_in_tu)) |
1fd400ff TT |
2349 | return 0; |
2350 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); | |
2351 | bytes += 3 * 8; | |
2352 | ||
52dc124a | 2353 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
1fd400ff | 2354 | struct signatured_type); |
52dc124a | 2355 | sig_type->signature = signature; |
3019eac3 DE |
2356 | sig_type->type_offset_in_tu.cu_off = type_offset_in_tu; |
2357 | sig_type->per_cu.is_debug_types = 1; | |
2358 | sig_type->per_cu.info_or_types_section = section; | |
52dc124a DE |
2359 | sig_type->per_cu.offset.sect_off = offset; |
2360 | sig_type->per_cu.objfile = objfile; | |
2361 | sig_type->per_cu.v.quick | |
1fd400ff TT |
2362 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
2363 | struct dwarf2_per_cu_quick_data); | |
2364 | ||
52dc124a DE |
2365 | slot = htab_find_slot (sig_types_hash, sig_type, INSERT); |
2366 | *slot = sig_type; | |
1fd400ff | 2367 | |
b4dd5633 | 2368 | dwarf2_per_objfile->all_type_units[i / 3] = sig_type; |
1fd400ff TT |
2369 | } |
2370 | ||
673bfd45 | 2371 | dwarf2_per_objfile->signatured_types = sig_types_hash; |
1fd400ff TT |
2372 | |
2373 | return 1; | |
2374 | } | |
2375 | ||
9291a0cd TT |
2376 | /* Read the address map data from the mapped index, and use it to |
2377 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 2378 | |
9291a0cd TT |
2379 | static void |
2380 | create_addrmap_from_index (struct objfile *objfile, struct mapped_index *index) | |
2381 | { | |
2382 | const gdb_byte *iter, *end; | |
2383 | struct obstack temp_obstack; | |
2384 | struct addrmap *mutable_map; | |
2385 | struct cleanup *cleanup; | |
2386 | CORE_ADDR baseaddr; | |
2387 | ||
2388 | obstack_init (&temp_obstack); | |
2389 | cleanup = make_cleanup_obstack_free (&temp_obstack); | |
2390 | mutable_map = addrmap_create_mutable (&temp_obstack); | |
2391 | ||
2392 | iter = index->address_table; | |
2393 | end = iter + index->address_table_size; | |
2394 | ||
2395 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
2396 | ||
2397 | while (iter < end) | |
2398 | { | |
2399 | ULONGEST hi, lo, cu_index; | |
2400 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2401 | iter += 8; | |
2402 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2403 | iter += 8; | |
2404 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
2405 | iter += 4; | |
2406 | ||
2407 | addrmap_set_empty (mutable_map, lo + baseaddr, hi + baseaddr - 1, | |
1fd400ff | 2408 | dw2_get_cu (cu_index)); |
9291a0cd TT |
2409 | } |
2410 | ||
2411 | objfile->psymtabs_addrmap = addrmap_create_fixed (mutable_map, | |
2412 | &objfile->objfile_obstack); | |
2413 | do_cleanups (cleanup); | |
2414 | } | |
2415 | ||
59d7bcaf JK |
2416 | /* The hash function for strings in the mapped index. This is the same as |
2417 | SYMBOL_HASH_NEXT, but we keep a separate copy to maintain control over the | |
2418 | implementation. This is necessary because the hash function is tied to the | |
2419 | format of the mapped index file. The hash values do not have to match with | |
559a7a62 JK |
2420 | SYMBOL_HASH_NEXT. |
2421 | ||
2422 | Use INT_MAX for INDEX_VERSION if you generate the current index format. */ | |
2fdf6df6 | 2423 | |
9291a0cd | 2424 | static hashval_t |
559a7a62 | 2425 | mapped_index_string_hash (int index_version, const void *p) |
9291a0cd TT |
2426 | { |
2427 | const unsigned char *str = (const unsigned char *) p; | |
2428 | hashval_t r = 0; | |
2429 | unsigned char c; | |
2430 | ||
2431 | while ((c = *str++) != 0) | |
559a7a62 JK |
2432 | { |
2433 | if (index_version >= 5) | |
2434 | c = tolower (c); | |
2435 | r = r * 67 + c - 113; | |
2436 | } | |
9291a0cd TT |
2437 | |
2438 | return r; | |
2439 | } | |
2440 | ||
2441 | /* Find a slot in the mapped index INDEX for the object named NAME. | |
2442 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
2443 | constant pool and return 1. If NAME cannot be found, return 0. */ | |
2fdf6df6 | 2444 | |
9291a0cd TT |
2445 | static int |
2446 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, | |
2447 | offset_type **vec_out) | |
2448 | { | |
0cf03b49 JK |
2449 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2450 | offset_type hash; | |
9291a0cd | 2451 | offset_type slot, step; |
559a7a62 | 2452 | int (*cmp) (const char *, const char *); |
9291a0cd | 2453 | |
0cf03b49 JK |
2454 | if (current_language->la_language == language_cplus |
2455 | || current_language->la_language == language_java | |
2456 | || current_language->la_language == language_fortran) | |
2457 | { | |
2458 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
2459 | not contain any. */ | |
2460 | const char *paren = strchr (name, '('); | |
2461 | ||
2462 | if (paren) | |
2463 | { | |
2464 | char *dup; | |
2465 | ||
2466 | dup = xmalloc (paren - name + 1); | |
2467 | memcpy (dup, name, paren - name); | |
2468 | dup[paren - name] = 0; | |
2469 | ||
2470 | make_cleanup (xfree, dup); | |
2471 | name = dup; | |
2472 | } | |
2473 | } | |
2474 | ||
559a7a62 | 2475 | /* Index version 4 did not support case insensitive searches. But the |
feea76c2 | 2476 | indices for case insensitive languages are built in lowercase, therefore |
559a7a62 JK |
2477 | simulate our NAME being searched is also lowercased. */ |
2478 | hash = mapped_index_string_hash ((index->version == 4 | |
2479 | && case_sensitivity == case_sensitive_off | |
2480 | ? 5 : index->version), | |
2481 | name); | |
2482 | ||
3876f04e DE |
2483 | slot = hash & (index->symbol_table_slots - 1); |
2484 | step = ((hash * 17) & (index->symbol_table_slots - 1)) | 1; | |
559a7a62 | 2485 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
2486 | |
2487 | for (;;) | |
2488 | { | |
2489 | /* Convert a slot number to an offset into the table. */ | |
2490 | offset_type i = 2 * slot; | |
2491 | const char *str; | |
3876f04e | 2492 | if (index->symbol_table[i] == 0 && index->symbol_table[i + 1] == 0) |
0cf03b49 JK |
2493 | { |
2494 | do_cleanups (back_to); | |
2495 | return 0; | |
2496 | } | |
9291a0cd | 2497 | |
3876f04e | 2498 | str = index->constant_pool + MAYBE_SWAP (index->symbol_table[i]); |
559a7a62 | 2499 | if (!cmp (name, str)) |
9291a0cd TT |
2500 | { |
2501 | *vec_out = (offset_type *) (index->constant_pool | |
3876f04e | 2502 | + MAYBE_SWAP (index->symbol_table[i + 1])); |
0cf03b49 | 2503 | do_cleanups (back_to); |
9291a0cd TT |
2504 | return 1; |
2505 | } | |
2506 | ||
3876f04e | 2507 | slot = (slot + step) & (index->symbol_table_slots - 1); |
9291a0cd TT |
2508 | } |
2509 | } | |
2510 | ||
2511 | /* Read the index file. If everything went ok, initialize the "quick" | |
2512 | elements of all the CUs and return 1. Otherwise, return 0. */ | |
2fdf6df6 | 2513 | |
9291a0cd TT |
2514 | static int |
2515 | dwarf2_read_index (struct objfile *objfile) | |
2516 | { | |
9291a0cd TT |
2517 | char *addr; |
2518 | struct mapped_index *map; | |
b3b272e1 | 2519 | offset_type *metadata; |
ac0b195c KW |
2520 | const gdb_byte *cu_list; |
2521 | const gdb_byte *types_list = NULL; | |
2522 | offset_type version, cu_list_elements; | |
2523 | offset_type types_list_elements = 0; | |
1fd400ff | 2524 | int i; |
9291a0cd | 2525 | |
9e0ac564 | 2526 | if (dwarf2_section_empty_p (&dwarf2_per_objfile->gdb_index)) |
9291a0cd | 2527 | return 0; |
82430852 JK |
2528 | |
2529 | /* Older elfutils strip versions could keep the section in the main | |
2530 | executable while splitting it for the separate debug info file. */ | |
2531 | if ((bfd_get_file_flags (dwarf2_per_objfile->gdb_index.asection) | |
2532 | & SEC_HAS_CONTENTS) == 0) | |
2533 | return 0; | |
2534 | ||
9291a0cd TT |
2535 | dwarf2_read_section (objfile, &dwarf2_per_objfile->gdb_index); |
2536 | ||
2537 | addr = dwarf2_per_objfile->gdb_index.buffer; | |
2538 | /* Version check. */ | |
1fd400ff | 2539 | version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 2540 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 2541 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 2542 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 2543 | indices. */ |
831adc1f | 2544 | if (version < 4) |
481860b3 GB |
2545 | { |
2546 | static int warning_printed = 0; | |
2547 | if (!warning_printed) | |
2548 | { | |
2549 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2550 | objfile->name); | |
2551 | warning_printed = 1; | |
2552 | } | |
2553 | return 0; | |
2554 | } | |
2555 | /* Index version 4 uses a different hash function than index version | |
2556 | 5 and later. | |
2557 | ||
2558 | Versions earlier than 6 did not emit psymbols for inlined | |
2559 | functions. Using these files will cause GDB not to be able to | |
2560 | set breakpoints on inlined functions by name, so we ignore these | |
2561 | indices unless the --use-deprecated-index-sections command line | |
2562 | option was supplied. */ | |
2563 | if (version < 6 && !use_deprecated_index_sections) | |
2564 | { | |
2565 | static int warning_printed = 0; | |
2566 | if (!warning_printed) | |
2567 | { | |
2568 | warning (_("Skipping deprecated .gdb_index section in %s, pass " | |
2569 | "--use-deprecated-index-sections to use them anyway"), | |
2570 | objfile->name); | |
2571 | warning_printed = 1; | |
2572 | } | |
2573 | return 0; | |
2574 | } | |
2575 | /* Indexes with higher version than the one supported by GDB may be no | |
594e8718 | 2576 | longer backward compatible. */ |
156942c7 | 2577 | if (version > 7) |
594e8718 | 2578 | return 0; |
9291a0cd TT |
2579 | |
2580 | map = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct mapped_index); | |
559a7a62 | 2581 | map->version = version; |
b3b272e1 | 2582 | map->total_size = dwarf2_per_objfile->gdb_index.size; |
9291a0cd TT |
2583 | |
2584 | metadata = (offset_type *) (addr + sizeof (offset_type)); | |
1fd400ff TT |
2585 | |
2586 | i = 0; | |
2587 | cu_list = addr + MAYBE_SWAP (metadata[i]); | |
2588 | cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
9291a0cd | 2589 | / 8); |
1fd400ff TT |
2590 | ++i; |
2591 | ||
987d643c TT |
2592 | types_list = addr + MAYBE_SWAP (metadata[i]); |
2593 | types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
2594 | - MAYBE_SWAP (metadata[i])) | |
2595 | / 8); | |
2596 | ++i; | |
1fd400ff TT |
2597 | |
2598 | map->address_table = addr + MAYBE_SWAP (metadata[i]); | |
2599 | map->address_table_size = (MAYBE_SWAP (metadata[i + 1]) | |
2600 | - MAYBE_SWAP (metadata[i])); | |
2601 | ++i; | |
2602 | ||
3876f04e DE |
2603 | map->symbol_table = (offset_type *) (addr + MAYBE_SWAP (metadata[i])); |
2604 | map->symbol_table_slots = ((MAYBE_SWAP (metadata[i + 1]) | |
2605 | - MAYBE_SWAP (metadata[i])) | |
2606 | / (2 * sizeof (offset_type))); | |
1fd400ff | 2607 | ++i; |
9291a0cd | 2608 | |
1fd400ff TT |
2609 | map->constant_pool = addr + MAYBE_SWAP (metadata[i]); |
2610 | ||
0fefef59 DE |
2611 | /* Don't use the index if it's empty. */ |
2612 | if (map->symbol_table_slots == 0) | |
2613 | return 0; | |
2614 | ||
1fd400ff TT |
2615 | if (!create_cus_from_index (objfile, cu_list, cu_list_elements)) |
2616 | return 0; | |
2617 | ||
8b70b953 TT |
2618 | if (types_list_elements) |
2619 | { | |
2620 | struct dwarf2_section_info *section; | |
2621 | ||
2622 | /* We can only handle a single .debug_types when we have an | |
2623 | index. */ | |
2624 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) != 1) | |
2625 | return 0; | |
2626 | ||
2627 | section = VEC_index (dwarf2_section_info_def, | |
2628 | dwarf2_per_objfile->types, 0); | |
2629 | ||
2630 | if (!create_signatured_type_table_from_index (objfile, section, | |
2631 | types_list, | |
2632 | types_list_elements)) | |
2633 | return 0; | |
2634 | } | |
9291a0cd TT |
2635 | |
2636 | create_addrmap_from_index (objfile, map); | |
2637 | ||
2638 | dwarf2_per_objfile->index_table = map; | |
2639 | dwarf2_per_objfile->using_index = 1; | |
7b9f3c50 DE |
2640 | dwarf2_per_objfile->quick_file_names_table = |
2641 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd TT |
2642 | |
2643 | return 1; | |
2644 | } | |
2645 | ||
2646 | /* A helper for the "quick" functions which sets the global | |
2647 | dwarf2_per_objfile according to OBJFILE. */ | |
2fdf6df6 | 2648 | |
9291a0cd TT |
2649 | static void |
2650 | dw2_setup (struct objfile *objfile) | |
2651 | { | |
2652 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
2653 | gdb_assert (dwarf2_per_objfile); | |
2654 | } | |
2655 | ||
f4dc4d17 DE |
2656 | /* Reader function for dw2_build_type_unit_groups. */ |
2657 | ||
2658 | static void | |
2659 | dw2_build_type_unit_groups_reader (const struct die_reader_specs *reader, | |
2660 | gdb_byte *info_ptr, | |
2661 | struct die_info *type_unit_die, | |
2662 | int has_children, | |
2663 | void *data) | |
2664 | { | |
2665 | struct dwarf2_cu *cu = reader->cu; | |
f4dc4d17 DE |
2666 | struct attribute *attr; |
2667 | struct type_unit_group *tu_group; | |
2668 | ||
2669 | gdb_assert (data == NULL); | |
2670 | ||
2671 | if (! has_children) | |
2672 | return; | |
2673 | ||
2674 | attr = dwarf2_attr_no_follow (type_unit_die, DW_AT_stmt_list); | |
2675 | /* Call this for its side-effect of creating the associated | |
2676 | struct type_unit_group if it doesn't already exist. */ | |
094b34ac | 2677 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 DE |
2678 | } |
2679 | ||
2680 | /* Build dwarf2_per_objfile->type_unit_groups. | |
2681 | This function may be called multiple times. */ | |
2682 | ||
2683 | static void | |
2684 | dw2_build_type_unit_groups (void) | |
2685 | { | |
2686 | if (dwarf2_per_objfile->type_unit_groups == NULL) | |
2687 | build_type_unit_groups (dw2_build_type_unit_groups_reader, NULL); | |
2688 | } | |
2689 | ||
dee91e82 | 2690 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 2691 | |
dee91e82 DE |
2692 | static void |
2693 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
2694 | gdb_byte *info_ptr, | |
2695 | struct die_info *comp_unit_die, | |
2696 | int has_children, | |
2697 | void *data) | |
9291a0cd | 2698 | { |
dee91e82 DE |
2699 | struct dwarf2_cu *cu = reader->cu; |
2700 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; | |
2701 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
094b34ac | 2702 | struct dwarf2_per_cu_data *lh_cu; |
7b9f3c50 | 2703 | struct line_header *lh; |
9291a0cd | 2704 | struct attribute *attr; |
dee91e82 | 2705 | int i; |
9291a0cd | 2706 | char *name, *comp_dir; |
7b9f3c50 DE |
2707 | void **slot; |
2708 | struct quick_file_names *qfn; | |
2709 | unsigned int line_offset; | |
9291a0cd | 2710 | |
07261596 TT |
2711 | /* Our callers never want to match partial units -- instead they |
2712 | will match the enclosing full CU. */ | |
2713 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
2714 | { | |
2715 | this_cu->v.quick->no_file_data = 1; | |
2716 | return; | |
2717 | } | |
2718 | ||
094b34ac DE |
2719 | /* If we're reading the line header for TUs, store it in the "per_cu" |
2720 | for tu_group. */ | |
2721 | if (this_cu->is_debug_types) | |
2722 | { | |
2723 | struct type_unit_group *tu_group = data; | |
2724 | ||
2725 | gdb_assert (tu_group != NULL); | |
2726 | lh_cu = &tu_group->per_cu; | |
2727 | } | |
2728 | else | |
2729 | lh_cu = this_cu; | |
2730 | ||
7b9f3c50 DE |
2731 | lh = NULL; |
2732 | slot = NULL; | |
2733 | line_offset = 0; | |
dee91e82 DE |
2734 | |
2735 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); | |
9291a0cd TT |
2736 | if (attr) |
2737 | { | |
7b9f3c50 DE |
2738 | struct quick_file_names find_entry; |
2739 | ||
2740 | line_offset = DW_UNSND (attr); | |
2741 | ||
2742 | /* We may have already read in this line header (TU line header sharing). | |
2743 | If we have we're done. */ | |
094b34ac DE |
2744 | find_entry.hash.dwo_unit = cu->dwo_unit; |
2745 | find_entry.hash.line_offset.sect_off = line_offset; | |
7b9f3c50 DE |
2746 | slot = htab_find_slot (dwarf2_per_objfile->quick_file_names_table, |
2747 | &find_entry, INSERT); | |
2748 | if (*slot != NULL) | |
2749 | { | |
094b34ac | 2750 | lh_cu->v.quick->file_names = *slot; |
dee91e82 | 2751 | return; |
7b9f3c50 DE |
2752 | } |
2753 | ||
3019eac3 | 2754 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
2755 | } |
2756 | if (lh == NULL) | |
2757 | { | |
094b34ac | 2758 | lh_cu->v.quick->no_file_data = 1; |
dee91e82 | 2759 | return; |
9291a0cd TT |
2760 | } |
2761 | ||
7b9f3c50 | 2762 | qfn = obstack_alloc (&objfile->objfile_obstack, sizeof (*qfn)); |
094b34ac DE |
2763 | qfn->hash.dwo_unit = cu->dwo_unit; |
2764 | qfn->hash.line_offset.sect_off = line_offset; | |
7b9f3c50 DE |
2765 | gdb_assert (slot != NULL); |
2766 | *slot = qfn; | |
9291a0cd | 2767 | |
dee91e82 | 2768 | find_file_and_directory (comp_unit_die, cu, &name, &comp_dir); |
9291a0cd | 2769 | |
7b9f3c50 DE |
2770 | qfn->num_file_names = lh->num_file_names; |
2771 | qfn->file_names = obstack_alloc (&objfile->objfile_obstack, | |
2772 | lh->num_file_names * sizeof (char *)); | |
9291a0cd | 2773 | for (i = 0; i < lh->num_file_names; ++i) |
7b9f3c50 DE |
2774 | qfn->file_names[i] = file_full_name (i + 1, lh, comp_dir); |
2775 | qfn->real_names = NULL; | |
9291a0cd | 2776 | |
7b9f3c50 | 2777 | free_line_header (lh); |
7b9f3c50 | 2778 | |
094b34ac | 2779 | lh_cu->v.quick->file_names = qfn; |
dee91e82 DE |
2780 | } |
2781 | ||
2782 | /* A helper for the "quick" functions which attempts to read the line | |
2783 | table for THIS_CU. */ | |
2784 | ||
2785 | static struct quick_file_names * | |
2786 | dw2_get_file_names (struct objfile *objfile, | |
2787 | struct dwarf2_per_cu_data *this_cu) | |
2788 | { | |
f4dc4d17 DE |
2789 | /* For TUs this should only be called on the parent group. */ |
2790 | if (this_cu->is_debug_types) | |
2791 | gdb_assert (IS_TYPE_UNIT_GROUP (this_cu)); | |
2792 | ||
dee91e82 DE |
2793 | if (this_cu->v.quick->file_names != NULL) |
2794 | return this_cu->v.quick->file_names; | |
2795 | /* If we know there is no line data, no point in looking again. */ | |
2796 | if (this_cu->v.quick->no_file_data) | |
2797 | return NULL; | |
2798 | ||
3019eac3 DE |
2799 | /* If DWO files are in use, we can still find the DW_AT_stmt_list attribute |
2800 | in the stub for CUs, there's is no need to lookup the DWO file. | |
2801 | However, that's not the case for TUs where DW_AT_stmt_list lives in the | |
2802 | DWO file. */ | |
2803 | if (this_cu->is_debug_types) | |
094b34ac DE |
2804 | { |
2805 | struct type_unit_group *tu_group = this_cu->s.type_unit_group; | |
2806 | ||
2807 | init_cutu_and_read_dies (tu_group->t.first_tu, NULL, 0, 0, | |
2808 | dw2_get_file_names_reader, tu_group); | |
2809 | } | |
3019eac3 DE |
2810 | else |
2811 | init_cutu_and_read_dies_simple (this_cu, dw2_get_file_names_reader, NULL); | |
dee91e82 DE |
2812 | |
2813 | if (this_cu->v.quick->no_file_data) | |
2814 | return NULL; | |
2815 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
2816 | } |
2817 | ||
2818 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 2819 | real path for a given file name from the line table. */ |
2fdf6df6 | 2820 | |
9291a0cd | 2821 | static const char * |
7b9f3c50 DE |
2822 | dw2_get_real_path (struct objfile *objfile, |
2823 | struct quick_file_names *qfn, int index) | |
9291a0cd | 2824 | { |
7b9f3c50 DE |
2825 | if (qfn->real_names == NULL) |
2826 | qfn->real_names = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
2827 | qfn->num_file_names, sizeof (char *)); | |
9291a0cd | 2828 | |
7b9f3c50 DE |
2829 | if (qfn->real_names[index] == NULL) |
2830 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]); | |
9291a0cd | 2831 | |
7b9f3c50 | 2832 | return qfn->real_names[index]; |
9291a0cd TT |
2833 | } |
2834 | ||
2835 | static struct symtab * | |
2836 | dw2_find_last_source_symtab (struct objfile *objfile) | |
2837 | { | |
2838 | int index; | |
ae2de4f8 | 2839 | |
9291a0cd TT |
2840 | dw2_setup (objfile); |
2841 | index = dwarf2_per_objfile->n_comp_units - 1; | |
a0f42c21 | 2842 | return dw2_instantiate_symtab (dw2_get_cu (index)); |
9291a0cd TT |
2843 | } |
2844 | ||
7b9f3c50 DE |
2845 | /* Traversal function for dw2_forget_cached_source_info. */ |
2846 | ||
2847 | static int | |
2848 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 2849 | { |
7b9f3c50 | 2850 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 2851 | |
7b9f3c50 | 2852 | if (file_data->real_names) |
9291a0cd | 2853 | { |
7b9f3c50 | 2854 | int i; |
9291a0cd | 2855 | |
7b9f3c50 | 2856 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 2857 | { |
7b9f3c50 DE |
2858 | xfree ((void*) file_data->real_names[i]); |
2859 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
2860 | } |
2861 | } | |
7b9f3c50 DE |
2862 | |
2863 | return 1; | |
2864 | } | |
2865 | ||
2866 | static void | |
2867 | dw2_forget_cached_source_info (struct objfile *objfile) | |
2868 | { | |
2869 | dw2_setup (objfile); | |
2870 | ||
2871 | htab_traverse_noresize (dwarf2_per_objfile->quick_file_names_table, | |
2872 | dw2_free_cached_file_names, NULL); | |
9291a0cd TT |
2873 | } |
2874 | ||
f8eba3c6 TT |
2875 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
2876 | the symtabs and calls the iterator. */ | |
2877 | ||
2878 | static int | |
2879 | dw2_map_expand_apply (struct objfile *objfile, | |
2880 | struct dwarf2_per_cu_data *per_cu, | |
2881 | const char *name, | |
2882 | const char *full_path, const char *real_path, | |
2883 | int (*callback) (struct symtab *, void *), | |
2884 | void *data) | |
2885 | { | |
2886 | struct symtab *last_made = objfile->symtabs; | |
2887 | ||
2888 | /* Don't visit already-expanded CUs. */ | |
2889 | if (per_cu->v.quick->symtab) | |
2890 | return 0; | |
2891 | ||
2892 | /* This may expand more than one symtab, and we want to iterate over | |
2893 | all of them. */ | |
a0f42c21 | 2894 | dw2_instantiate_symtab (per_cu); |
f8eba3c6 TT |
2895 | |
2896 | return iterate_over_some_symtabs (name, full_path, real_path, callback, data, | |
2897 | objfile->symtabs, last_made); | |
2898 | } | |
2899 | ||
2900 | /* Implementation of the map_symtabs_matching_filename method. */ | |
2901 | ||
9291a0cd | 2902 | static int |
f8eba3c6 TT |
2903 | dw2_map_symtabs_matching_filename (struct objfile *objfile, const char *name, |
2904 | const char *full_path, const char *real_path, | |
2905 | int (*callback) (struct symtab *, void *), | |
2906 | void *data) | |
9291a0cd TT |
2907 | { |
2908 | int i; | |
c011a4f4 | 2909 | const char *name_basename = lbasename (name); |
4aac40c8 TT |
2910 | int name_len = strlen (name); |
2911 | int is_abs = IS_ABSOLUTE_PATH (name); | |
9291a0cd TT |
2912 | |
2913 | dw2_setup (objfile); | |
ae2de4f8 | 2914 | |
f4dc4d17 DE |
2915 | dw2_build_type_unit_groups (); |
2916 | ||
1fd400ff | 2917 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
f4dc4d17 | 2918 | + dwarf2_per_objfile->n_type_unit_groups); ++i) |
9291a0cd TT |
2919 | { |
2920 | int j; | |
f4dc4d17 | 2921 | struct dwarf2_per_cu_data *per_cu = dw2_get_primary_cu (i); |
7b9f3c50 | 2922 | struct quick_file_names *file_data; |
9291a0cd | 2923 | |
3d7bb9d9 | 2924 | /* We only need to look at symtabs not already expanded. */ |
e254ef6a | 2925 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
2926 | continue; |
2927 | ||
7b9f3c50 DE |
2928 | file_data = dw2_get_file_names (objfile, per_cu); |
2929 | if (file_data == NULL) | |
9291a0cd TT |
2930 | continue; |
2931 | ||
7b9f3c50 | 2932 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 2933 | { |
7b9f3c50 | 2934 | const char *this_name = file_data->file_names[j]; |
9291a0cd | 2935 | |
4aac40c8 TT |
2936 | if (FILENAME_CMP (name, this_name) == 0 |
2937 | || (!is_abs && compare_filenames_for_search (this_name, | |
2938 | name, name_len))) | |
9291a0cd | 2939 | { |
f8eba3c6 TT |
2940 | if (dw2_map_expand_apply (objfile, per_cu, |
2941 | name, full_path, real_path, | |
2942 | callback, data)) | |
2943 | return 1; | |
4aac40c8 | 2944 | } |
9291a0cd | 2945 | |
c011a4f4 DE |
2946 | /* Before we invoke realpath, which can get expensive when many |
2947 | files are involved, do a quick comparison of the basenames. */ | |
2948 | if (! basenames_may_differ | |
2949 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
2950 | continue; | |
2951 | ||
9291a0cd TT |
2952 | if (full_path != NULL) |
2953 | { | |
7b9f3c50 DE |
2954 | const char *this_real_name = dw2_get_real_path (objfile, |
2955 | file_data, j); | |
9291a0cd | 2956 | |
7b9f3c50 | 2957 | if (this_real_name != NULL |
4aac40c8 TT |
2958 | && (FILENAME_CMP (full_path, this_real_name) == 0 |
2959 | || (!is_abs | |
2960 | && compare_filenames_for_search (this_real_name, | |
2961 | name, name_len)))) | |
9291a0cd | 2962 | { |
f8eba3c6 TT |
2963 | if (dw2_map_expand_apply (objfile, per_cu, |
2964 | name, full_path, real_path, | |
2965 | callback, data)) | |
2966 | return 1; | |
9291a0cd TT |
2967 | } |
2968 | } | |
2969 | ||
2970 | if (real_path != NULL) | |
2971 | { | |
7b9f3c50 DE |
2972 | const char *this_real_name = dw2_get_real_path (objfile, |
2973 | file_data, j); | |
9291a0cd | 2974 | |
7b9f3c50 | 2975 | if (this_real_name != NULL |
4aac40c8 TT |
2976 | && (FILENAME_CMP (real_path, this_real_name) == 0 |
2977 | || (!is_abs | |
2978 | && compare_filenames_for_search (this_real_name, | |
2979 | name, name_len)))) | |
9291a0cd | 2980 | { |
f8eba3c6 TT |
2981 | if (dw2_map_expand_apply (objfile, per_cu, |
2982 | name, full_path, real_path, | |
2983 | callback, data)) | |
2984 | return 1; | |
9291a0cd TT |
2985 | } |
2986 | } | |
2987 | } | |
2988 | } | |
2989 | ||
9291a0cd TT |
2990 | return 0; |
2991 | } | |
2992 | ||
2993 | static struct symtab * | |
2994 | dw2_lookup_symbol (struct objfile *objfile, int block_index, | |
2995 | const char *name, domain_enum domain) | |
2996 | { | |
774b6a14 | 2997 | /* We do all the work in the pre_expand_symtabs_matching hook |
9291a0cd TT |
2998 | instead. */ |
2999 | return NULL; | |
3000 | } | |
3001 | ||
3002 | /* A helper function that expands all symtabs that hold an object | |
156942c7 DE |
3003 | named NAME. If WANT_SPECIFIC_BLOCK is non-zero, only look for |
3004 | symbols in block BLOCK_KIND. */ | |
2fdf6df6 | 3005 | |
9291a0cd | 3006 | static void |
156942c7 DE |
3007 | dw2_do_expand_symtabs_matching (struct objfile *objfile, |
3008 | int want_specific_block, | |
3009 | enum block_enum block_kind, | |
3010 | const char *name, domain_enum domain) | |
9291a0cd | 3011 | { |
156942c7 DE |
3012 | struct mapped_index *index; |
3013 | ||
9291a0cd TT |
3014 | dw2_setup (objfile); |
3015 | ||
156942c7 DE |
3016 | index = dwarf2_per_objfile->index_table; |
3017 | ||
ae2de4f8 | 3018 | /* index_table is NULL if OBJF_READNOW. */ |
156942c7 | 3019 | if (index) |
9291a0cd TT |
3020 | { |
3021 | offset_type *vec; | |
3022 | ||
156942c7 | 3023 | if (find_slot_in_mapped_hash (index, name, &vec)) |
9291a0cd TT |
3024 | { |
3025 | offset_type i, len = MAYBE_SWAP (*vec); | |
3026 | for (i = 0; i < len; ++i) | |
3027 | { | |
156942c7 DE |
3028 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[i + 1]); |
3029 | offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
e254ef6a | 3030 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (cu_index); |
156942c7 DE |
3031 | int want_static = block_kind != GLOBAL_BLOCK; |
3032 | /* This value is only valid for index versions >= 7. */ | |
3033 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
3034 | gdb_index_symbol_kind symbol_kind = | |
3035 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3036 | ||
3037 | if (want_specific_block | |
3038 | && index->version >= 7 | |
3039 | && want_static != is_static) | |
3040 | continue; | |
3041 | ||
3042 | /* Only check the symbol's kind if it has one. | |
3043 | Indices prior to version 7 don't record it. */ | |
3044 | if (index->version >= 7) | |
3045 | { | |
3046 | switch (domain) | |
3047 | { | |
3048 | case VAR_DOMAIN: | |
3049 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
3050 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
3051 | /* Some types are also in VAR_DOMAIN. */ | |
3052 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3053 | continue; | |
3054 | break; | |
3055 | case STRUCT_DOMAIN: | |
3056 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3057 | continue; | |
3058 | break; | |
3059 | case LABEL_DOMAIN: | |
3060 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3061 | continue; | |
3062 | break; | |
3063 | default: | |
3064 | break; | |
3065 | } | |
3066 | } | |
1fd400ff | 3067 | |
a0f42c21 | 3068 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
3069 | } |
3070 | } | |
3071 | } | |
3072 | } | |
3073 | ||
774b6a14 TT |
3074 | static void |
3075 | dw2_pre_expand_symtabs_matching (struct objfile *objfile, | |
8903c50d | 3076 | enum block_enum block_kind, const char *name, |
774b6a14 | 3077 | domain_enum domain) |
9291a0cd | 3078 | { |
156942c7 | 3079 | dw2_do_expand_symtabs_matching (objfile, 1, block_kind, name, domain); |
9291a0cd TT |
3080 | } |
3081 | ||
3082 | static void | |
3083 | dw2_print_stats (struct objfile *objfile) | |
3084 | { | |
3085 | int i, count; | |
3086 | ||
3087 | dw2_setup (objfile); | |
3088 | count = 0; | |
1fd400ff | 3089 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
d467dd73 | 3090 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 3091 | { |
e254ef6a | 3092 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 3093 | |
e254ef6a | 3094 | if (!per_cu->v.quick->symtab) |
9291a0cd TT |
3095 | ++count; |
3096 | } | |
3097 | printf_filtered (_(" Number of unread CUs: %d\n"), count); | |
3098 | } | |
3099 | ||
3100 | static void | |
3101 | dw2_dump (struct objfile *objfile) | |
3102 | { | |
3103 | /* Nothing worth printing. */ | |
3104 | } | |
3105 | ||
3106 | static void | |
3107 | dw2_relocate (struct objfile *objfile, struct section_offsets *new_offsets, | |
3108 | struct section_offsets *delta) | |
3109 | { | |
3110 | /* There's nothing to relocate here. */ | |
3111 | } | |
3112 | ||
3113 | static void | |
3114 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
3115 | const char *func_name) | |
3116 | { | |
156942c7 DE |
3117 | /* Note: It doesn't matter what we pass for block_kind here. */ |
3118 | dw2_do_expand_symtabs_matching (objfile, 0, GLOBAL_BLOCK, func_name, | |
3119 | VAR_DOMAIN); | |
9291a0cd TT |
3120 | } |
3121 | ||
3122 | static void | |
3123 | dw2_expand_all_symtabs (struct objfile *objfile) | |
3124 | { | |
3125 | int i; | |
3126 | ||
3127 | dw2_setup (objfile); | |
1fd400ff TT |
3128 | |
3129 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
d467dd73 | 3130 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 3131 | { |
e254ef6a | 3132 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 3133 | |
a0f42c21 | 3134 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
3135 | } |
3136 | } | |
3137 | ||
3138 | static void | |
3139 | dw2_expand_symtabs_with_filename (struct objfile *objfile, | |
3140 | const char *filename) | |
3141 | { | |
3142 | int i; | |
3143 | ||
3144 | dw2_setup (objfile); | |
d4637a04 DE |
3145 | |
3146 | /* We don't need to consider type units here. | |
3147 | This is only called for examining code, e.g. expand_line_sal. | |
3148 | There can be an order of magnitude (or more) more type units | |
3149 | than comp units, and we avoid them if we can. */ | |
3150 | ||
3151 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
9291a0cd TT |
3152 | { |
3153 | int j; | |
e254ef6a | 3154 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
7b9f3c50 | 3155 | struct quick_file_names *file_data; |
9291a0cd | 3156 | |
3d7bb9d9 | 3157 | /* We only need to look at symtabs not already expanded. */ |
e254ef6a | 3158 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
3159 | continue; |
3160 | ||
7b9f3c50 DE |
3161 | file_data = dw2_get_file_names (objfile, per_cu); |
3162 | if (file_data == NULL) | |
9291a0cd TT |
3163 | continue; |
3164 | ||
7b9f3c50 | 3165 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3166 | { |
7b9f3c50 | 3167 | const char *this_name = file_data->file_names[j]; |
1ef75ecc | 3168 | if (FILENAME_CMP (this_name, filename) == 0) |
9291a0cd | 3169 | { |
a0f42c21 | 3170 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
3171 | break; |
3172 | } | |
3173 | } | |
3174 | } | |
3175 | } | |
3176 | ||
356d9f9d TT |
3177 | /* A helper function for dw2_find_symbol_file that finds the primary |
3178 | file name for a given CU. This is a die_reader_func. */ | |
3179 | ||
3180 | static void | |
3181 | dw2_get_primary_filename_reader (const struct die_reader_specs *reader, | |
3182 | gdb_byte *info_ptr, | |
3183 | struct die_info *comp_unit_die, | |
3184 | int has_children, | |
3185 | void *data) | |
3186 | { | |
3187 | const char **result_ptr = data; | |
3188 | struct dwarf2_cu *cu = reader->cu; | |
3189 | struct attribute *attr; | |
3190 | ||
3191 | attr = dwarf2_attr (comp_unit_die, DW_AT_name, cu); | |
3192 | if (attr == NULL) | |
3193 | *result_ptr = NULL; | |
3194 | else | |
3195 | *result_ptr = DW_STRING (attr); | |
3196 | } | |
3197 | ||
dd786858 | 3198 | static const char * |
9291a0cd TT |
3199 | dw2_find_symbol_file (struct objfile *objfile, const char *name) |
3200 | { | |
e254ef6a | 3201 | struct dwarf2_per_cu_data *per_cu; |
9291a0cd | 3202 | offset_type *vec; |
7b9f3c50 | 3203 | struct quick_file_names *file_data; |
356d9f9d | 3204 | const char *filename; |
9291a0cd TT |
3205 | |
3206 | dw2_setup (objfile); | |
3207 | ||
ae2de4f8 | 3208 | /* index_table is NULL if OBJF_READNOW. */ |
9291a0cd | 3209 | if (!dwarf2_per_objfile->index_table) |
96408a79 SA |
3210 | { |
3211 | struct symtab *s; | |
3212 | ||
d790cf0a DE |
3213 | ALL_OBJFILE_PRIMARY_SYMTABS (objfile, s) |
3214 | { | |
3215 | struct blockvector *bv = BLOCKVECTOR (s); | |
3216 | const struct block *block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
3217 | struct symbol *sym = lookup_block_symbol (block, name, VAR_DOMAIN); | |
3218 | ||
3219 | if (sym) | |
3220 | return sym->symtab->filename; | |
3221 | } | |
96408a79 SA |
3222 | return NULL; |
3223 | } | |
9291a0cd TT |
3224 | |
3225 | if (!find_slot_in_mapped_hash (dwarf2_per_objfile->index_table, | |
3226 | name, &vec)) | |
3227 | return NULL; | |
3228 | ||
3229 | /* Note that this just looks at the very first one named NAME -- but | |
3230 | actually we are looking for a function. find_main_filename | |
3231 | should be rewritten so that it doesn't require a custom hook. It | |
3232 | could just use the ordinary symbol tables. */ | |
3233 | /* vec[0] is the length, which must always be >0. */ | |
156942c7 | 3234 | per_cu = dw2_get_cu (GDB_INDEX_CU_VALUE (MAYBE_SWAP (vec[1]))); |
9291a0cd | 3235 | |
356d9f9d TT |
3236 | if (per_cu->v.quick->symtab != NULL) |
3237 | return per_cu->v.quick->symtab->filename; | |
3238 | ||
f4dc4d17 DE |
3239 | init_cutu_and_read_dies (per_cu, NULL, 0, 0, |
3240 | dw2_get_primary_filename_reader, &filename); | |
9291a0cd | 3241 | |
356d9f9d | 3242 | return filename; |
9291a0cd TT |
3243 | } |
3244 | ||
3245 | static void | |
40658b94 PH |
3246 | dw2_map_matching_symbols (const char * name, domain_enum namespace, |
3247 | struct objfile *objfile, int global, | |
3248 | int (*callback) (struct block *, | |
3249 | struct symbol *, void *), | |
2edb89d3 JK |
3250 | void *data, symbol_compare_ftype *match, |
3251 | symbol_compare_ftype *ordered_compare) | |
9291a0cd | 3252 | { |
40658b94 | 3253 | /* Currently unimplemented; used for Ada. The function can be called if the |
a9e6a4bb JK |
3254 | current language is Ada for a non-Ada objfile using GNU index. As Ada |
3255 | does not look for non-Ada symbols this function should just return. */ | |
9291a0cd TT |
3256 | } |
3257 | ||
3258 | static void | |
f8eba3c6 TT |
3259 | dw2_expand_symtabs_matching |
3260 | (struct objfile *objfile, | |
3261 | int (*file_matcher) (const char *, void *), | |
e078317b | 3262 | int (*name_matcher) (const char *, void *), |
f8eba3c6 TT |
3263 | enum search_domain kind, |
3264 | void *data) | |
9291a0cd TT |
3265 | { |
3266 | int i; | |
3267 | offset_type iter; | |
4b5246aa | 3268 | struct mapped_index *index; |
9291a0cd TT |
3269 | |
3270 | dw2_setup (objfile); | |
ae2de4f8 DE |
3271 | |
3272 | /* index_table is NULL if OBJF_READNOW. */ | |
9291a0cd TT |
3273 | if (!dwarf2_per_objfile->index_table) |
3274 | return; | |
4b5246aa | 3275 | index = dwarf2_per_objfile->index_table; |
9291a0cd | 3276 | |
7b08b9eb | 3277 | if (file_matcher != NULL) |
24c79950 TT |
3278 | { |
3279 | struct cleanup *cleanup; | |
3280 | htab_t visited_found, visited_not_found; | |
3281 | ||
f4dc4d17 DE |
3282 | dw2_build_type_unit_groups (); |
3283 | ||
24c79950 TT |
3284 | visited_found = htab_create_alloc (10, |
3285 | htab_hash_pointer, htab_eq_pointer, | |
3286 | NULL, xcalloc, xfree); | |
3287 | cleanup = make_cleanup_htab_delete (visited_found); | |
3288 | visited_not_found = htab_create_alloc (10, | |
3289 | htab_hash_pointer, htab_eq_pointer, | |
3290 | NULL, xcalloc, xfree); | |
3291 | make_cleanup_htab_delete (visited_not_found); | |
3292 | ||
3293 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
f4dc4d17 | 3294 | + dwarf2_per_objfile->n_type_unit_groups); ++i) |
24c79950 TT |
3295 | { |
3296 | int j; | |
f4dc4d17 | 3297 | struct dwarf2_per_cu_data *per_cu = dw2_get_primary_cu (i); |
24c79950 TT |
3298 | struct quick_file_names *file_data; |
3299 | void **slot; | |
7b08b9eb | 3300 | |
24c79950 | 3301 | per_cu->v.quick->mark = 0; |
3d7bb9d9 | 3302 | |
24c79950 TT |
3303 | /* We only need to look at symtabs not already expanded. */ |
3304 | if (per_cu->v.quick->symtab) | |
3305 | continue; | |
7b08b9eb | 3306 | |
24c79950 TT |
3307 | file_data = dw2_get_file_names (objfile, per_cu); |
3308 | if (file_data == NULL) | |
3309 | continue; | |
7b08b9eb | 3310 | |
24c79950 TT |
3311 | if (htab_find (visited_not_found, file_data) != NULL) |
3312 | continue; | |
3313 | else if (htab_find (visited_found, file_data) != NULL) | |
3314 | { | |
3315 | per_cu->v.quick->mark = 1; | |
3316 | continue; | |
3317 | } | |
3318 | ||
3319 | for (j = 0; j < file_data->num_file_names; ++j) | |
3320 | { | |
3321 | if (file_matcher (file_data->file_names[j], data)) | |
3322 | { | |
3323 | per_cu->v.quick->mark = 1; | |
3324 | break; | |
3325 | } | |
3326 | } | |
3327 | ||
3328 | slot = htab_find_slot (per_cu->v.quick->mark | |
3329 | ? visited_found | |
3330 | : visited_not_found, | |
3331 | file_data, INSERT); | |
3332 | *slot = file_data; | |
3333 | } | |
3334 | ||
3335 | do_cleanups (cleanup); | |
3336 | } | |
9291a0cd | 3337 | |
3876f04e | 3338 | for (iter = 0; iter < index->symbol_table_slots; ++iter) |
9291a0cd TT |
3339 | { |
3340 | offset_type idx = 2 * iter; | |
3341 | const char *name; | |
3342 | offset_type *vec, vec_len, vec_idx; | |
3343 | ||
3876f04e | 3344 | if (index->symbol_table[idx] == 0 && index->symbol_table[idx + 1] == 0) |
9291a0cd TT |
3345 | continue; |
3346 | ||
3876f04e | 3347 | name = index->constant_pool + MAYBE_SWAP (index->symbol_table[idx]); |
9291a0cd | 3348 | |
e078317b | 3349 | if (! (*name_matcher) (name, data)) |
9291a0cd TT |
3350 | continue; |
3351 | ||
3352 | /* The name was matched, now expand corresponding CUs that were | |
3353 | marked. */ | |
4b5246aa | 3354 | vec = (offset_type *) (index->constant_pool |
3876f04e | 3355 | + MAYBE_SWAP (index->symbol_table[idx + 1])); |
9291a0cd TT |
3356 | vec_len = MAYBE_SWAP (vec[0]); |
3357 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
3358 | { | |
e254ef6a | 3359 | struct dwarf2_per_cu_data *per_cu; |
156942c7 DE |
3360 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[vec_idx + 1]); |
3361 | gdb_index_symbol_kind symbol_kind = | |
3362 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3363 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
3364 | ||
3365 | /* Don't crash on bad data. */ | |
3366 | if (cu_index >= (dwarf2_per_objfile->n_comp_units | |
667e0a4b | 3367 | + dwarf2_per_objfile->n_type_units)) |
156942c7 | 3368 | continue; |
1fd400ff | 3369 | |
156942c7 DE |
3370 | /* Only check the symbol's kind if it has one. |
3371 | Indices prior to version 7 don't record it. */ | |
3372 | if (index->version >= 7) | |
3373 | { | |
3374 | switch (kind) | |
3375 | { | |
3376 | case VARIABLES_DOMAIN: | |
3377 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
3378 | continue; | |
3379 | break; | |
3380 | case FUNCTIONS_DOMAIN: | |
3381 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
3382 | continue; | |
3383 | break; | |
3384 | case TYPES_DOMAIN: | |
3385 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3386 | continue; | |
3387 | break; | |
3388 | default: | |
3389 | break; | |
3390 | } | |
3391 | } | |
3392 | ||
3393 | per_cu = dw2_get_cu (cu_index); | |
7b08b9eb | 3394 | if (file_matcher == NULL || per_cu->v.quick->mark) |
a0f42c21 | 3395 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
3396 | } |
3397 | } | |
3398 | } | |
3399 | ||
9703b513 TT |
3400 | /* A helper for dw2_find_pc_sect_symtab which finds the most specific |
3401 | symtab. */ | |
3402 | ||
3403 | static struct symtab * | |
3404 | recursively_find_pc_sect_symtab (struct symtab *symtab, CORE_ADDR pc) | |
3405 | { | |
3406 | int i; | |
3407 | ||
3408 | if (BLOCKVECTOR (symtab) != NULL | |
3409 | && blockvector_contains_pc (BLOCKVECTOR (symtab), pc)) | |
3410 | return symtab; | |
3411 | ||
a3ec0bb1 DE |
3412 | if (symtab->includes == NULL) |
3413 | return NULL; | |
3414 | ||
9703b513 TT |
3415 | for (i = 0; symtab->includes[i]; ++i) |
3416 | { | |
a3ec0bb1 | 3417 | struct symtab *s = symtab->includes[i]; |
9703b513 TT |
3418 | |
3419 | s = recursively_find_pc_sect_symtab (s, pc); | |
3420 | if (s != NULL) | |
3421 | return s; | |
3422 | } | |
3423 | ||
3424 | return NULL; | |
3425 | } | |
3426 | ||
9291a0cd TT |
3427 | static struct symtab * |
3428 | dw2_find_pc_sect_symtab (struct objfile *objfile, | |
3429 | struct minimal_symbol *msymbol, | |
3430 | CORE_ADDR pc, | |
3431 | struct obj_section *section, | |
3432 | int warn_if_readin) | |
3433 | { | |
3434 | struct dwarf2_per_cu_data *data; | |
9703b513 | 3435 | struct symtab *result; |
9291a0cd TT |
3436 | |
3437 | dw2_setup (objfile); | |
3438 | ||
3439 | if (!objfile->psymtabs_addrmap) | |
3440 | return NULL; | |
3441 | ||
3442 | data = addrmap_find (objfile->psymtabs_addrmap, pc); | |
3443 | if (!data) | |
3444 | return NULL; | |
3445 | ||
3446 | if (warn_if_readin && data->v.quick->symtab) | |
abebb8b0 | 3447 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), |
9291a0cd TT |
3448 | paddress (get_objfile_arch (objfile), pc)); |
3449 | ||
9703b513 TT |
3450 | result = recursively_find_pc_sect_symtab (dw2_instantiate_symtab (data), pc); |
3451 | gdb_assert (result != NULL); | |
3452 | return result; | |
9291a0cd TT |
3453 | } |
3454 | ||
9291a0cd | 3455 | static void |
44b13c5a | 3456 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, |
74e2f255 | 3457 | void *data, int need_fullname) |
9291a0cd TT |
3458 | { |
3459 | int i; | |
24c79950 TT |
3460 | struct cleanup *cleanup; |
3461 | htab_t visited = htab_create_alloc (10, htab_hash_pointer, htab_eq_pointer, | |
3462 | NULL, xcalloc, xfree); | |
9291a0cd | 3463 | |
24c79950 | 3464 | cleanup = make_cleanup_htab_delete (visited); |
9291a0cd | 3465 | dw2_setup (objfile); |
ae2de4f8 | 3466 | |
f4dc4d17 DE |
3467 | dw2_build_type_unit_groups (); |
3468 | ||
24c79950 TT |
3469 | /* We can ignore file names coming from already-expanded CUs. */ |
3470 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
3471 | + dwarf2_per_objfile->n_type_units); ++i) | |
3472 | { | |
3473 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); | |
3474 | ||
3475 | if (per_cu->v.quick->symtab) | |
3476 | { | |
3477 | void **slot = htab_find_slot (visited, per_cu->v.quick->file_names, | |
3478 | INSERT); | |
3479 | ||
3480 | *slot = per_cu->v.quick->file_names; | |
3481 | } | |
3482 | } | |
3483 | ||
1fd400ff | 3484 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
f4dc4d17 | 3485 | + dwarf2_per_objfile->n_type_unit_groups); ++i) |
9291a0cd TT |
3486 | { |
3487 | int j; | |
f4dc4d17 | 3488 | struct dwarf2_per_cu_data *per_cu = dw2_get_primary_cu (i); |
7b9f3c50 | 3489 | struct quick_file_names *file_data; |
24c79950 | 3490 | void **slot; |
9291a0cd | 3491 | |
3d7bb9d9 | 3492 | /* We only need to look at symtabs not already expanded. */ |
e254ef6a | 3493 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
3494 | continue; |
3495 | ||
7b9f3c50 DE |
3496 | file_data = dw2_get_file_names (objfile, per_cu); |
3497 | if (file_data == NULL) | |
9291a0cd TT |
3498 | continue; |
3499 | ||
24c79950 TT |
3500 | slot = htab_find_slot (visited, file_data, INSERT); |
3501 | if (*slot) | |
3502 | { | |
3503 | /* Already visited. */ | |
3504 | continue; | |
3505 | } | |
3506 | *slot = file_data; | |
3507 | ||
7b9f3c50 | 3508 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3509 | { |
74e2f255 DE |
3510 | const char *this_real_name; |
3511 | ||
3512 | if (need_fullname) | |
3513 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
3514 | else | |
3515 | this_real_name = NULL; | |
7b9f3c50 | 3516 | (*fun) (file_data->file_names[j], this_real_name, data); |
9291a0cd TT |
3517 | } |
3518 | } | |
24c79950 TT |
3519 | |
3520 | do_cleanups (cleanup); | |
9291a0cd TT |
3521 | } |
3522 | ||
3523 | static int | |
3524 | dw2_has_symbols (struct objfile *objfile) | |
3525 | { | |
3526 | return 1; | |
3527 | } | |
3528 | ||
3529 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
3530 | { | |
3531 | dw2_has_symbols, | |
3532 | dw2_find_last_source_symtab, | |
3533 | dw2_forget_cached_source_info, | |
f8eba3c6 | 3534 | dw2_map_symtabs_matching_filename, |
9291a0cd | 3535 | dw2_lookup_symbol, |
774b6a14 | 3536 | dw2_pre_expand_symtabs_matching, |
9291a0cd TT |
3537 | dw2_print_stats, |
3538 | dw2_dump, | |
3539 | dw2_relocate, | |
3540 | dw2_expand_symtabs_for_function, | |
3541 | dw2_expand_all_symtabs, | |
3542 | dw2_expand_symtabs_with_filename, | |
3543 | dw2_find_symbol_file, | |
40658b94 | 3544 | dw2_map_matching_symbols, |
9291a0cd TT |
3545 | dw2_expand_symtabs_matching, |
3546 | dw2_find_pc_sect_symtab, | |
9291a0cd TT |
3547 | dw2_map_symbol_filenames |
3548 | }; | |
3549 | ||
3550 | /* Initialize for reading DWARF for this objfile. Return 0 if this | |
3551 | file will use psymtabs, or 1 if using the GNU index. */ | |
3552 | ||
3553 | int | |
3554 | dwarf2_initialize_objfile (struct objfile *objfile) | |
3555 | { | |
3556 | /* If we're about to read full symbols, don't bother with the | |
3557 | indices. In this case we also don't care if some other debug | |
3558 | format is making psymtabs, because they are all about to be | |
3559 | expanded anyway. */ | |
3560 | if ((objfile->flags & OBJF_READNOW)) | |
3561 | { | |
3562 | int i; | |
3563 | ||
3564 | dwarf2_per_objfile->using_index = 1; | |
3565 | create_all_comp_units (objfile); | |
0e50663e | 3566 | create_all_type_units (objfile); |
7b9f3c50 DE |
3567 | dwarf2_per_objfile->quick_file_names_table = |
3568 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd | 3569 | |
1fd400ff | 3570 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
d467dd73 | 3571 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 3572 | { |
e254ef6a | 3573 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 3574 | |
e254ef6a DE |
3575 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
3576 | struct dwarf2_per_cu_quick_data); | |
9291a0cd TT |
3577 | } |
3578 | ||
3579 | /* Return 1 so that gdb sees the "quick" functions. However, | |
3580 | these functions will be no-ops because we will have expanded | |
3581 | all symtabs. */ | |
3582 | return 1; | |
3583 | } | |
3584 | ||
3585 | if (dwarf2_read_index (objfile)) | |
3586 | return 1; | |
3587 | ||
9291a0cd TT |
3588 | return 0; |
3589 | } | |
3590 | ||
3591 | \f | |
3592 | ||
dce234bc PP |
3593 | /* Build a partial symbol table. */ |
3594 | ||
3595 | void | |
f29dff0a | 3596 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 3597 | { |
f29dff0a | 3598 | if (objfile->global_psymbols.size == 0 && objfile->static_psymbols.size == 0) |
c906108c SS |
3599 | { |
3600 | init_psymbol_list (objfile, 1024); | |
3601 | } | |
3602 | ||
d146bf1e | 3603 | dwarf2_build_psymtabs_hard (objfile); |
c906108c | 3604 | } |
c906108c | 3605 | |
1ce1cefd DE |
3606 | /* Return the total length of the CU described by HEADER. */ |
3607 | ||
3608 | static unsigned int | |
3609 | get_cu_length (const struct comp_unit_head *header) | |
3610 | { | |
3611 | return header->initial_length_size + header->length; | |
3612 | } | |
3613 | ||
45452591 DE |
3614 | /* Return TRUE if OFFSET is within CU_HEADER. */ |
3615 | ||
3616 | static inline int | |
b64f50a1 | 3617 | offset_in_cu_p (const struct comp_unit_head *cu_header, sect_offset offset) |
45452591 | 3618 | { |
b64f50a1 | 3619 | sect_offset bottom = { cu_header->offset.sect_off }; |
1ce1cefd | 3620 | sect_offset top = { cu_header->offset.sect_off + get_cu_length (cu_header) }; |
9a619af0 | 3621 | |
b64f50a1 | 3622 | return (offset.sect_off >= bottom.sect_off && offset.sect_off < top.sect_off); |
45452591 DE |
3623 | } |
3624 | ||
3b80fe9b DE |
3625 | /* Find the base address of the compilation unit for range lists and |
3626 | location lists. It will normally be specified by DW_AT_low_pc. | |
3627 | In DWARF-3 draft 4, the base address could be overridden by | |
3628 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
3629 | compilation units with discontinuous ranges. */ | |
3630 | ||
3631 | static void | |
3632 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
3633 | { | |
3634 | struct attribute *attr; | |
3635 | ||
3636 | cu->base_known = 0; | |
3637 | cu->base_address = 0; | |
3638 | ||
3639 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
3640 | if (attr) | |
3641 | { | |
3642 | cu->base_address = DW_ADDR (attr); | |
3643 | cu->base_known = 1; | |
3644 | } | |
3645 | else | |
3646 | { | |
3647 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
3648 | if (attr) | |
3649 | { | |
3650 | cu->base_address = DW_ADDR (attr); | |
3651 | cu->base_known = 1; | |
3652 | } | |
3653 | } | |
3654 | } | |
3655 | ||
93311388 DE |
3656 | /* Read in the comp unit header information from the debug_info at info_ptr. |
3657 | NOTE: This leaves members offset, first_die_offset to be filled in | |
3658 | by the caller. */ | |
107d2387 | 3659 | |
fe1b8b76 | 3660 | static gdb_byte * |
107d2387 | 3661 | read_comp_unit_head (struct comp_unit_head *cu_header, |
fe1b8b76 | 3662 | gdb_byte *info_ptr, bfd *abfd) |
107d2387 AC |
3663 | { |
3664 | int signed_addr; | |
891d2f0b | 3665 | unsigned int bytes_read; |
c764a876 DE |
3666 | |
3667 | cu_header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
3668 | cu_header->initial_length_size = bytes_read; | |
3669 | cu_header->offset_size = (bytes_read == 4) ? 4 : 8; | |
613e1657 | 3670 | info_ptr += bytes_read; |
107d2387 AC |
3671 | cu_header->version = read_2_bytes (abfd, info_ptr); |
3672 | info_ptr += 2; | |
b64f50a1 JK |
3673 | cu_header->abbrev_offset.sect_off = read_offset (abfd, info_ptr, cu_header, |
3674 | &bytes_read); | |
613e1657 | 3675 | info_ptr += bytes_read; |
107d2387 AC |
3676 | cu_header->addr_size = read_1_byte (abfd, info_ptr); |
3677 | info_ptr += 1; | |
3678 | signed_addr = bfd_get_sign_extend_vma (abfd); | |
3679 | if (signed_addr < 0) | |
8e65ff28 | 3680 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3681 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 | 3682 | cu_header->signed_addr_p = signed_addr; |
c764a876 | 3683 | |
107d2387 AC |
3684 | return info_ptr; |
3685 | } | |
3686 | ||
9ff913ba DE |
3687 | /* Subroutine of read_and_check_comp_unit_head and |
3688 | read_and_check_type_unit_head to simplify them. | |
3689 | Perform various error checking on the header. */ | |
3690 | ||
3691 | static void | |
3692 | error_check_comp_unit_head (struct comp_unit_head *header, | |
4bdcc0c1 DE |
3693 | struct dwarf2_section_info *section, |
3694 | struct dwarf2_section_info *abbrev_section) | |
9ff913ba DE |
3695 | { |
3696 | bfd *abfd = section->asection->owner; | |
3697 | const char *filename = bfd_get_filename (abfd); | |
3698 | ||
3699 | if (header->version != 2 && header->version != 3 && header->version != 4) | |
3700 | error (_("Dwarf Error: wrong version in compilation unit header " | |
3701 | "(is %d, should be 2, 3, or 4) [in module %s]"), header->version, | |
3702 | filename); | |
3703 | ||
b64f50a1 | 3704 | if (header->abbrev_offset.sect_off |
9ff913ba DE |
3705 | >= dwarf2_section_size (dwarf2_per_objfile->objfile, |
3706 | &dwarf2_per_objfile->abbrev)) | |
3707 | error (_("Dwarf Error: bad offset (0x%lx) in compilation unit header " | |
3708 | "(offset 0x%lx + 6) [in module %s]"), | |
b64f50a1 | 3709 | (long) header->abbrev_offset.sect_off, (long) header->offset.sect_off, |
9ff913ba DE |
3710 | filename); |
3711 | ||
3712 | /* Cast to unsigned long to use 64-bit arithmetic when possible to | |
3713 | avoid potential 32-bit overflow. */ | |
1ce1cefd | 3714 | if (((unsigned long) header->offset.sect_off + get_cu_length (header)) |
9ff913ba DE |
3715 | > section->size) |
3716 | error (_("Dwarf Error: bad length (0x%lx) in compilation unit header " | |
3717 | "(offset 0x%lx + 0) [in module %s]"), | |
b64f50a1 | 3718 | (long) header->length, (long) header->offset.sect_off, |
9ff913ba DE |
3719 | filename); |
3720 | } | |
3721 | ||
3722 | /* Read in a CU/TU header and perform some basic error checking. | |
3723 | The contents of the header are stored in HEADER. | |
3724 | The result is a pointer to the start of the first DIE. */ | |
adabb602 | 3725 | |
fe1b8b76 | 3726 | static gdb_byte * |
9ff913ba DE |
3727 | read_and_check_comp_unit_head (struct comp_unit_head *header, |
3728 | struct dwarf2_section_info *section, | |
4bdcc0c1 | 3729 | struct dwarf2_section_info *abbrev_section, |
9ff913ba DE |
3730 | gdb_byte *info_ptr, |
3731 | int is_debug_types_section) | |
72bf9492 | 3732 | { |
fe1b8b76 | 3733 | gdb_byte *beg_of_comp_unit = info_ptr; |
9ff913ba | 3734 | bfd *abfd = section->asection->owner; |
72bf9492 | 3735 | |
b64f50a1 | 3736 | header->offset.sect_off = beg_of_comp_unit - section->buffer; |
adabb602 | 3737 | |
72bf9492 DJ |
3738 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); |
3739 | ||
460c1c54 CC |
3740 | /* If we're reading a type unit, skip over the signature and |
3741 | type_offset fields. */ | |
b0df02fd | 3742 | if (is_debug_types_section) |
460c1c54 CC |
3743 | info_ptr += 8 /*signature*/ + header->offset_size; |
3744 | ||
b64f50a1 | 3745 | header->first_die_offset.cu_off = info_ptr - beg_of_comp_unit; |
adabb602 | 3746 | |
4bdcc0c1 | 3747 | error_check_comp_unit_head (header, section, abbrev_section); |
72bf9492 DJ |
3748 | |
3749 | return info_ptr; | |
3750 | } | |
3751 | ||
348e048f DE |
3752 | /* Read in the types comp unit header information from .debug_types entry at |
3753 | types_ptr. The result is a pointer to one past the end of the header. */ | |
3754 | ||
3755 | static gdb_byte * | |
9ff913ba DE |
3756 | read_and_check_type_unit_head (struct comp_unit_head *header, |
3757 | struct dwarf2_section_info *section, | |
4bdcc0c1 | 3758 | struct dwarf2_section_info *abbrev_section, |
9ff913ba | 3759 | gdb_byte *info_ptr, |
dee91e82 DE |
3760 | ULONGEST *signature, |
3761 | cu_offset *type_offset_in_tu) | |
348e048f | 3762 | { |
9ff913ba DE |
3763 | gdb_byte *beg_of_comp_unit = info_ptr; |
3764 | bfd *abfd = section->asection->owner; | |
348e048f | 3765 | |
b64f50a1 | 3766 | header->offset.sect_off = beg_of_comp_unit - section->buffer; |
348e048f | 3767 | |
9ff913ba | 3768 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); |
348e048f | 3769 | |
9ff913ba DE |
3770 | /* If we're reading a type unit, skip over the signature and |
3771 | type_offset fields. */ | |
3772 | if (signature != NULL) | |
3773 | *signature = read_8_bytes (abfd, info_ptr); | |
3774 | info_ptr += 8; | |
dee91e82 DE |
3775 | if (type_offset_in_tu != NULL) |
3776 | type_offset_in_tu->cu_off = read_offset_1 (abfd, info_ptr, | |
3777 | header->offset_size); | |
9ff913ba DE |
3778 | info_ptr += header->offset_size; |
3779 | ||
b64f50a1 | 3780 | header->first_die_offset.cu_off = info_ptr - beg_of_comp_unit; |
348e048f | 3781 | |
4bdcc0c1 | 3782 | error_check_comp_unit_head (header, section, abbrev_section); |
9ff913ba DE |
3783 | |
3784 | return info_ptr; | |
348e048f DE |
3785 | } |
3786 | ||
f4dc4d17 DE |
3787 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
3788 | ||
3789 | static sect_offset | |
3790 | read_abbrev_offset (struct dwarf2_section_info *section, | |
3791 | sect_offset offset) | |
3792 | { | |
3793 | bfd *abfd = section->asection->owner; | |
3794 | gdb_byte *info_ptr; | |
3795 | unsigned int length, initial_length_size, offset_size; | |
3796 | sect_offset abbrev_offset; | |
3797 | ||
3798 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
3799 | info_ptr = section->buffer + offset.sect_off; | |
3800 | length = read_initial_length (abfd, info_ptr, &initial_length_size); | |
3801 | offset_size = initial_length_size == 4 ? 4 : 8; | |
3802 | info_ptr += initial_length_size + 2 /*version*/; | |
3803 | abbrev_offset.sect_off = read_offset_1 (abfd, info_ptr, offset_size); | |
3804 | return abbrev_offset; | |
3805 | } | |
3806 | ||
aaa75496 JB |
3807 | /* Allocate a new partial symtab for file named NAME and mark this new |
3808 | partial symtab as being an include of PST. */ | |
3809 | ||
3810 | static void | |
3811 | dwarf2_create_include_psymtab (char *name, struct partial_symtab *pst, | |
3812 | struct objfile *objfile) | |
3813 | { | |
3814 | struct partial_symtab *subpst = allocate_psymtab (name, objfile); | |
3815 | ||
3816 | subpst->section_offsets = pst->section_offsets; | |
3817 | subpst->textlow = 0; | |
3818 | subpst->texthigh = 0; | |
3819 | ||
3820 | subpst->dependencies = (struct partial_symtab **) | |
3821 | obstack_alloc (&objfile->objfile_obstack, | |
3822 | sizeof (struct partial_symtab *)); | |
3823 | subpst->dependencies[0] = pst; | |
3824 | subpst->number_of_dependencies = 1; | |
3825 | ||
3826 | subpst->globals_offset = 0; | |
3827 | subpst->n_global_syms = 0; | |
3828 | subpst->statics_offset = 0; | |
3829 | subpst->n_static_syms = 0; | |
3830 | subpst->symtab = NULL; | |
3831 | subpst->read_symtab = pst->read_symtab; | |
3832 | subpst->readin = 0; | |
3833 | ||
3834 | /* No private part is necessary for include psymtabs. This property | |
3835 | can be used to differentiate between such include psymtabs and | |
10b3939b | 3836 | the regular ones. */ |
58a9656e | 3837 | subpst->read_symtab_private = NULL; |
aaa75496 JB |
3838 | } |
3839 | ||
3840 | /* Read the Line Number Program data and extract the list of files | |
3841 | included by the source file represented by PST. Build an include | |
d85a05f0 | 3842 | partial symtab for each of these included files. */ |
aaa75496 JB |
3843 | |
3844 | static void | |
3845 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 DE |
3846 | struct die_info *die, |
3847 | struct partial_symtab *pst) | |
aaa75496 | 3848 | { |
d85a05f0 DJ |
3849 | struct line_header *lh = NULL; |
3850 | struct attribute *attr; | |
aaa75496 | 3851 | |
d85a05f0 DJ |
3852 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
3853 | if (attr) | |
3019eac3 | 3854 | lh = dwarf_decode_line_header (DW_UNSND (attr), cu); |
aaa75496 JB |
3855 | if (lh == NULL) |
3856 | return; /* No linetable, so no includes. */ | |
3857 | ||
c6da4cef | 3858 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). */ |
f3f5162e | 3859 | dwarf_decode_lines (lh, pst->dirname, cu, pst, 1); |
aaa75496 JB |
3860 | |
3861 | free_line_header (lh); | |
3862 | } | |
3863 | ||
348e048f | 3864 | static hashval_t |
52dc124a | 3865 | hash_signatured_type (const void *item) |
348e048f | 3866 | { |
52dc124a | 3867 | const struct signatured_type *sig_type = item; |
9a619af0 | 3868 | |
348e048f | 3869 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 3870 | return sig_type->signature; |
348e048f DE |
3871 | } |
3872 | ||
3873 | static int | |
52dc124a | 3874 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f DE |
3875 | { |
3876 | const struct signatured_type *lhs = item_lhs; | |
3877 | const struct signatured_type *rhs = item_rhs; | |
9a619af0 | 3878 | |
348e048f DE |
3879 | return lhs->signature == rhs->signature; |
3880 | } | |
3881 | ||
1fd400ff TT |
3882 | /* Allocate a hash table for signatured types. */ |
3883 | ||
3884 | static htab_t | |
673bfd45 | 3885 | allocate_signatured_type_table (struct objfile *objfile) |
1fd400ff TT |
3886 | { |
3887 | return htab_create_alloc_ex (41, | |
52dc124a DE |
3888 | hash_signatured_type, |
3889 | eq_signatured_type, | |
1fd400ff TT |
3890 | NULL, |
3891 | &objfile->objfile_obstack, | |
3892 | hashtab_obstack_allocate, | |
3893 | dummy_obstack_deallocate); | |
3894 | } | |
3895 | ||
d467dd73 | 3896 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
3897 | |
3898 | static int | |
d467dd73 | 3899 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff TT |
3900 | { |
3901 | struct signatured_type *sigt = *slot; | |
b4dd5633 | 3902 | struct signatured_type ***datap = datum; |
1fd400ff | 3903 | |
b4dd5633 | 3904 | **datap = sigt; |
1fd400ff TT |
3905 | ++*datap; |
3906 | ||
3907 | return 1; | |
3908 | } | |
3909 | ||
3019eac3 DE |
3910 | /* Create the hash table of all entries in the .debug_types section. |
3911 | DWO_FILE is a pointer to the DWO file for .debug_types.dwo, NULL otherwise. | |
3912 | The result is a pointer to the hash table or NULL if there are | |
3913 | no types. */ | |
348e048f | 3914 | |
3019eac3 DE |
3915 | static htab_t |
3916 | create_debug_types_hash_table (struct dwo_file *dwo_file, | |
3917 | VEC (dwarf2_section_info_def) *types) | |
348e048f | 3918 | { |
3019eac3 | 3919 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8b70b953 | 3920 | htab_t types_htab = NULL; |
8b70b953 TT |
3921 | int ix; |
3922 | struct dwarf2_section_info *section; | |
4bdcc0c1 | 3923 | struct dwarf2_section_info *abbrev_section; |
348e048f | 3924 | |
3019eac3 DE |
3925 | if (VEC_empty (dwarf2_section_info_def, types)) |
3926 | return NULL; | |
348e048f | 3927 | |
4bdcc0c1 DE |
3928 | abbrev_section = (dwo_file != NULL |
3929 | ? &dwo_file->sections.abbrev | |
3930 | : &dwarf2_per_objfile->abbrev); | |
3931 | ||
09406207 DE |
3932 | if (dwarf2_read_debug) |
3933 | fprintf_unfiltered (gdb_stdlog, "Reading .debug_types%s for %s:\n", | |
3934 | dwo_file ? ".dwo" : "", | |
3935 | bfd_get_filename (abbrev_section->asection->owner)); | |
3936 | ||
8b70b953 | 3937 | for (ix = 0; |
3019eac3 | 3938 | VEC_iterate (dwarf2_section_info_def, types, ix, section); |
8b70b953 TT |
3939 | ++ix) |
3940 | { | |
3019eac3 | 3941 | bfd *abfd; |
8b70b953 | 3942 | gdb_byte *info_ptr, *end_ptr; |
348e048f | 3943 | |
8b70b953 TT |
3944 | dwarf2_read_section (objfile, section); |
3945 | info_ptr = section->buffer; | |
348e048f | 3946 | |
8b70b953 TT |
3947 | if (info_ptr == NULL) |
3948 | continue; | |
348e048f | 3949 | |
3019eac3 DE |
3950 | /* We can't set abfd until now because the section may be empty or |
3951 | not present, in which case section->asection will be NULL. */ | |
3952 | abfd = section->asection->owner; | |
3953 | ||
8b70b953 | 3954 | if (types_htab == NULL) |
3019eac3 DE |
3955 | { |
3956 | if (dwo_file) | |
3957 | types_htab = allocate_dwo_unit_table (objfile); | |
3958 | else | |
3959 | types_htab = allocate_signatured_type_table (objfile); | |
3960 | } | |
348e048f | 3961 | |
dee91e82 DE |
3962 | /* We don't use init_cutu_and_read_dies_simple, or some such, here |
3963 | because we don't need to read any dies: the signature is in the | |
3964 | header. */ | |
8b70b953 TT |
3965 | |
3966 | end_ptr = info_ptr + section->size; | |
3967 | while (info_ptr < end_ptr) | |
3968 | { | |
b64f50a1 | 3969 | sect_offset offset; |
3019eac3 | 3970 | cu_offset type_offset_in_tu; |
8b70b953 | 3971 | ULONGEST signature; |
52dc124a | 3972 | struct signatured_type *sig_type; |
3019eac3 | 3973 | struct dwo_unit *dwo_tu; |
8b70b953 TT |
3974 | void **slot; |
3975 | gdb_byte *ptr = info_ptr; | |
9ff913ba | 3976 | struct comp_unit_head header; |
dee91e82 | 3977 | unsigned int length; |
348e048f | 3978 | |
b64f50a1 | 3979 | offset.sect_off = ptr - section->buffer; |
348e048f | 3980 | |
8b70b953 | 3981 | /* We need to read the type's signature in order to build the hash |
9ff913ba | 3982 | table, but we don't need anything else just yet. */ |
348e048f | 3983 | |
4bdcc0c1 DE |
3984 | ptr = read_and_check_type_unit_head (&header, section, |
3985 | abbrev_section, ptr, | |
3019eac3 | 3986 | &signature, &type_offset_in_tu); |
6caca83c | 3987 | |
1ce1cefd | 3988 | length = get_cu_length (&header); |
dee91e82 | 3989 | |
6caca83c | 3990 | /* Skip dummy type units. */ |
dee91e82 DE |
3991 | if (ptr >= info_ptr + length |
3992 | || peek_abbrev_code (abfd, ptr) == 0) | |
6caca83c | 3993 | { |
1ce1cefd | 3994 | info_ptr += length; |
6caca83c CC |
3995 | continue; |
3996 | } | |
8b70b953 | 3997 | |
3019eac3 DE |
3998 | if (dwo_file) |
3999 | { | |
4000 | sig_type = NULL; | |
4001 | dwo_tu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4002 | struct dwo_unit); | |
4003 | dwo_tu->dwo_file = dwo_file; | |
4004 | dwo_tu->signature = signature; | |
4005 | dwo_tu->type_offset_in_tu = type_offset_in_tu; | |
4006 | dwo_tu->info_or_types_section = section; | |
4007 | dwo_tu->offset = offset; | |
4008 | dwo_tu->length = length; | |
4009 | } | |
4010 | else | |
4011 | { | |
4012 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
4013 | The real type_offset is in the DWO file. */ | |
4014 | dwo_tu = NULL; | |
4015 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4016 | struct signatured_type); | |
4017 | sig_type->signature = signature; | |
4018 | sig_type->type_offset_in_tu = type_offset_in_tu; | |
4019 | sig_type->per_cu.objfile = objfile; | |
4020 | sig_type->per_cu.is_debug_types = 1; | |
4021 | sig_type->per_cu.info_or_types_section = section; | |
4022 | sig_type->per_cu.offset = offset; | |
4023 | sig_type->per_cu.length = length; | |
4024 | } | |
8b70b953 | 4025 | |
3019eac3 DE |
4026 | slot = htab_find_slot (types_htab, |
4027 | dwo_file ? (void*) dwo_tu : (void *) sig_type, | |
4028 | INSERT); | |
8b70b953 TT |
4029 | gdb_assert (slot != NULL); |
4030 | if (*slot != NULL) | |
4031 | { | |
3019eac3 DE |
4032 | sect_offset dup_offset; |
4033 | ||
4034 | if (dwo_file) | |
4035 | { | |
4036 | const struct dwo_unit *dup_tu = *slot; | |
4037 | ||
4038 | dup_offset = dup_tu->offset; | |
4039 | } | |
4040 | else | |
4041 | { | |
4042 | const struct signatured_type *dup_tu = *slot; | |
4043 | ||
4044 | dup_offset = dup_tu->per_cu.offset; | |
4045 | } | |
b3c8eb43 | 4046 | |
8b70b953 TT |
4047 | complaint (&symfile_complaints, |
4048 | _("debug type entry at offset 0x%x is duplicate to the " | |
4049 | "entry at offset 0x%x, signature 0x%s"), | |
3019eac3 | 4050 | offset.sect_off, dup_offset.sect_off, |
8b70b953 | 4051 | phex (signature, sizeof (signature))); |
8b70b953 | 4052 | } |
3019eac3 | 4053 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; |
348e048f | 4054 | |
09406207 | 4055 | if (dwarf2_read_debug) |
8b70b953 | 4056 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, signature 0x%s\n", |
b64f50a1 JK |
4057 | offset.sect_off, |
4058 | phex (signature, sizeof (signature))); | |
348e048f | 4059 | |
dee91e82 | 4060 | info_ptr += length; |
8b70b953 | 4061 | } |
348e048f DE |
4062 | } |
4063 | ||
3019eac3 DE |
4064 | return types_htab; |
4065 | } | |
4066 | ||
4067 | /* Create the hash table of all entries in the .debug_types section, | |
4068 | and initialize all_type_units. | |
4069 | The result is zero if there is an error (e.g. missing .debug_types section), | |
4070 | otherwise non-zero. */ | |
4071 | ||
4072 | static int | |
4073 | create_all_type_units (struct objfile *objfile) | |
4074 | { | |
4075 | htab_t types_htab; | |
b4dd5633 | 4076 | struct signatured_type **iter; |
3019eac3 DE |
4077 | |
4078 | types_htab = create_debug_types_hash_table (NULL, dwarf2_per_objfile->types); | |
4079 | if (types_htab == NULL) | |
4080 | { | |
4081 | dwarf2_per_objfile->signatured_types = NULL; | |
4082 | return 0; | |
4083 | } | |
4084 | ||
348e048f DE |
4085 | dwarf2_per_objfile->signatured_types = types_htab; |
4086 | ||
d467dd73 DE |
4087 | dwarf2_per_objfile->n_type_units = htab_elements (types_htab); |
4088 | dwarf2_per_objfile->all_type_units | |
1fd400ff | 4089 | = obstack_alloc (&objfile->objfile_obstack, |
d467dd73 | 4090 | dwarf2_per_objfile->n_type_units |
b4dd5633 | 4091 | * sizeof (struct signatured_type *)); |
d467dd73 DE |
4092 | iter = &dwarf2_per_objfile->all_type_units[0]; |
4093 | htab_traverse_noresize (types_htab, add_signatured_type_cu_to_table, &iter); | |
4094 | gdb_assert (iter - &dwarf2_per_objfile->all_type_units[0] | |
4095 | == dwarf2_per_objfile->n_type_units); | |
1fd400ff | 4096 | |
348e048f DE |
4097 | return 1; |
4098 | } | |
4099 | ||
380bca97 | 4100 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
e319fa28 | 4101 | Returns NULL if signature SIG is not present in the table. */ |
348e048f DE |
4102 | |
4103 | static struct signatured_type * | |
e319fa28 | 4104 | lookup_signatured_type (ULONGEST sig) |
348e048f DE |
4105 | { |
4106 | struct signatured_type find_entry, *entry; | |
4107 | ||
4108 | if (dwarf2_per_objfile->signatured_types == NULL) | |
4109 | { | |
4110 | complaint (&symfile_complaints, | |
55f1336d | 4111 | _("missing `.debug_types' section for DW_FORM_ref_sig8 die")); |
dcc07052 | 4112 | return NULL; |
348e048f DE |
4113 | } |
4114 | ||
4115 | find_entry.signature = sig; | |
4116 | entry = htab_find (dwarf2_per_objfile->signatured_types, &find_entry); | |
4117 | return entry; | |
4118 | } | |
42e7ad6c DE |
4119 | \f |
4120 | /* Low level DIE reading support. */ | |
348e048f | 4121 | |
d85a05f0 DJ |
4122 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
4123 | ||
4124 | static void | |
4125 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 4126 | struct dwarf2_cu *cu, |
3019eac3 DE |
4127 | struct dwarf2_section_info *section, |
4128 | struct dwo_file *dwo_file) | |
d85a05f0 | 4129 | { |
fceca515 | 4130 | gdb_assert (section->readin && section->buffer != NULL); |
dee91e82 | 4131 | reader->abfd = section->asection->owner; |
d85a05f0 | 4132 | reader->cu = cu; |
3019eac3 | 4133 | reader->dwo_file = dwo_file; |
dee91e82 DE |
4134 | reader->die_section = section; |
4135 | reader->buffer = section->buffer; | |
f664829e | 4136 | reader->buffer_end = section->buffer + section->size; |
d85a05f0 DJ |
4137 | } |
4138 | ||
fd820528 | 4139 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 4140 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 4141 | |
f4dc4d17 DE |
4142 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
4143 | Otherwise the table specified in the comp unit header is read in and used. | |
4144 | This is an optimization for when we already have the abbrev table. | |
4145 | ||
dee91e82 DE |
4146 | If USE_EXISTING_CU is non-zero, and THIS_CU->cu is non-NULL, then use it. |
4147 | Otherwise, a new CU is allocated with xmalloc. | |
4148 | ||
4149 | If KEEP is non-zero, then if we allocated a dwarf2_cu we add it to | |
4150 | read_in_chain. Otherwise the dwarf2_cu data is freed at the end. | |
4151 | ||
4152 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
fd820528 | 4153 | linker) then DIE_READER_FUNC will not get called. */ |
aaa75496 | 4154 | |
70221824 | 4155 | static void |
fd820528 | 4156 | init_cutu_and_read_dies (struct dwarf2_per_cu_data *this_cu, |
f4dc4d17 | 4157 | struct abbrev_table *abbrev_table, |
fd820528 DE |
4158 | int use_existing_cu, int keep, |
4159 | die_reader_func_ftype *die_reader_func, | |
4160 | void *data) | |
c906108c | 4161 | { |
dee91e82 | 4162 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 DE |
4163 | struct dwarf2_section_info *section = this_cu->info_or_types_section; |
4164 | bfd *abfd = section->asection->owner; | |
dee91e82 DE |
4165 | struct dwarf2_cu *cu; |
4166 | gdb_byte *begin_info_ptr, *info_ptr; | |
4167 | struct die_reader_specs reader; | |
d85a05f0 | 4168 | struct die_info *comp_unit_die; |
dee91e82 | 4169 | int has_children; |
d85a05f0 | 4170 | struct attribute *attr; |
dee91e82 DE |
4171 | struct cleanup *cleanups, *free_cu_cleanup = NULL; |
4172 | struct signatured_type *sig_type = NULL; | |
4bdcc0c1 | 4173 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
4174 | /* Non-zero if CU currently points to a DWO file and we need to |
4175 | reread it. When this happens we need to reread the skeleton die | |
4176 | before we can reread the DWO file. */ | |
4177 | int rereading_dwo_cu = 0; | |
c906108c | 4178 | |
09406207 DE |
4179 | if (dwarf2_die_debug) |
4180 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset 0x%x\n", | |
4181 | this_cu->is_debug_types ? "type" : "comp", | |
4182 | this_cu->offset.sect_off); | |
4183 | ||
dee91e82 DE |
4184 | if (use_existing_cu) |
4185 | gdb_assert (keep); | |
23745b47 | 4186 | |
dee91e82 DE |
4187 | cleanups = make_cleanup (null_cleanup, NULL); |
4188 | ||
4189 | /* This is cheap if the section is already read in. */ | |
4190 | dwarf2_read_section (objfile, section); | |
4191 | ||
4192 | begin_info_ptr = info_ptr = section->buffer + this_cu->offset.sect_off; | |
4bdcc0c1 | 4193 | abbrev_section = &dwarf2_per_objfile->abbrev; |
dee91e82 DE |
4194 | |
4195 | if (use_existing_cu && this_cu->cu != NULL) | |
4196 | { | |
4197 | cu = this_cu->cu; | |
42e7ad6c DE |
4198 | |
4199 | /* If this CU is from a DWO file we need to start over, we need to | |
4200 | refetch the attributes from the skeleton CU. | |
4201 | This could be optimized by retrieving those attributes from when we | |
4202 | were here the first time: the previous comp_unit_die was stored in | |
4203 | comp_unit_obstack. But there's no data yet that we need this | |
4204 | optimization. */ | |
4205 | if (cu->dwo_unit != NULL) | |
4206 | rereading_dwo_cu = 1; | |
dee91e82 DE |
4207 | } |
4208 | else | |
4209 | { | |
4210 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
4211 | gdb_assert (this_cu->cu == NULL); | |
4212 | ||
4213 | cu = xmalloc (sizeof (*cu)); | |
4214 | init_one_comp_unit (cu, this_cu); | |
4215 | ||
4216 | /* If an error occurs while loading, release our storage. */ | |
4217 | free_cu_cleanup = make_cleanup (free_heap_comp_unit, cu); | |
42e7ad6c | 4218 | } |
dee91e82 | 4219 | |
42e7ad6c DE |
4220 | if (cu->header.first_die_offset.cu_off != 0 && ! rereading_dwo_cu) |
4221 | { | |
4222 | /* We already have the header, there's no need to read it in again. */ | |
4223 | info_ptr += cu->header.first_die_offset.cu_off; | |
4224 | } | |
4225 | else | |
4226 | { | |
3019eac3 | 4227 | if (this_cu->is_debug_types) |
dee91e82 DE |
4228 | { |
4229 | ULONGEST signature; | |
42e7ad6c | 4230 | cu_offset type_offset_in_tu; |
dee91e82 | 4231 | |
4bdcc0c1 DE |
4232 | info_ptr = read_and_check_type_unit_head (&cu->header, section, |
4233 | abbrev_section, info_ptr, | |
42e7ad6c DE |
4234 | &signature, |
4235 | &type_offset_in_tu); | |
dee91e82 | 4236 | |
42e7ad6c DE |
4237 | /* Since per_cu is the first member of struct signatured_type, |
4238 | we can go from a pointer to one to a pointer to the other. */ | |
4239 | sig_type = (struct signatured_type *) this_cu; | |
4240 | gdb_assert (sig_type->signature == signature); | |
4241 | gdb_assert (sig_type->type_offset_in_tu.cu_off | |
4242 | == type_offset_in_tu.cu_off); | |
dee91e82 DE |
4243 | gdb_assert (this_cu->offset.sect_off == cu->header.offset.sect_off); |
4244 | ||
42e7ad6c DE |
4245 | /* LENGTH has not been set yet for type units if we're |
4246 | using .gdb_index. */ | |
1ce1cefd | 4247 | this_cu->length = get_cu_length (&cu->header); |
3019eac3 DE |
4248 | |
4249 | /* Establish the type offset that can be used to lookup the type. */ | |
4250 | sig_type->type_offset_in_section.sect_off = | |
4251 | this_cu->offset.sect_off + sig_type->type_offset_in_tu.cu_off; | |
dee91e82 DE |
4252 | } |
4253 | else | |
4254 | { | |
4bdcc0c1 DE |
4255 | info_ptr = read_and_check_comp_unit_head (&cu->header, section, |
4256 | abbrev_section, | |
4257 | info_ptr, 0); | |
dee91e82 DE |
4258 | |
4259 | gdb_assert (this_cu->offset.sect_off == cu->header.offset.sect_off); | |
1ce1cefd | 4260 | gdb_assert (this_cu->length == get_cu_length (&cu->header)); |
dee91e82 DE |
4261 | } |
4262 | } | |
10b3939b | 4263 | |
6caca83c | 4264 | /* Skip dummy compilation units. */ |
dee91e82 | 4265 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c CC |
4266 | || peek_abbrev_code (abfd, info_ptr) == 0) |
4267 | { | |
dee91e82 | 4268 | do_cleanups (cleanups); |
21b2bd31 | 4269 | return; |
6caca83c CC |
4270 | } |
4271 | ||
433df2d4 DE |
4272 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
4273 | And if we need to read them now, make sure they're freed when we're | |
42e7ad6c DE |
4274 | done. Note that it's important that if the CU had an abbrev table |
4275 | on entry we don't free it when we're done: Somewhere up the call stack | |
4276 | it may be in use. */ | |
f4dc4d17 DE |
4277 | if (abbrev_table != NULL) |
4278 | { | |
4279 | gdb_assert (cu->abbrev_table == NULL); | |
4280 | gdb_assert (cu->header.abbrev_offset.sect_off | |
4281 | == abbrev_table->offset.sect_off); | |
4282 | cu->abbrev_table = abbrev_table; | |
4283 | } | |
4284 | else if (cu->abbrev_table == NULL) | |
dee91e82 | 4285 | { |
4bdcc0c1 | 4286 | dwarf2_read_abbrevs (cu, abbrev_section); |
dee91e82 DE |
4287 | make_cleanup (dwarf2_free_abbrev_table, cu); |
4288 | } | |
42e7ad6c DE |
4289 | else if (rereading_dwo_cu) |
4290 | { | |
4291 | dwarf2_free_abbrev_table (cu); | |
4292 | dwarf2_read_abbrevs (cu, abbrev_section); | |
4293 | } | |
af703f96 | 4294 | |
dee91e82 | 4295 | /* Read the top level CU/TU die. */ |
3019eac3 | 4296 | init_cu_die_reader (&reader, cu, section, NULL); |
dee91e82 | 4297 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
93311388 | 4298 | |
3019eac3 DE |
4299 | /* If we have a DWO stub, process it and then read in the DWO file. |
4300 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains | |
4301 | a DWO CU, that this test will fail. */ | |
4302 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); | |
4303 | if (attr) | |
4304 | { | |
4305 | char *dwo_name = DW_STRING (attr); | |
42e7ad6c | 4306 | const char *comp_dir_string; |
3019eac3 DE |
4307 | struct dwo_unit *dwo_unit; |
4308 | ULONGEST signature; /* Or dwo_id. */ | |
42e7ad6c | 4309 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; |
3019eac3 | 4310 | int i,num_extra_attrs; |
4bdcc0c1 | 4311 | struct dwarf2_section_info *dwo_abbrev_section; |
3019eac3 DE |
4312 | |
4313 | if (has_children) | |
4314 | error (_("Dwarf Error: compilation unit with DW_AT_GNU_dwo_name" | |
4315 | " has children (offset 0x%x) [in module %s]"), | |
4316 | this_cu->offset.sect_off, bfd_get_filename (abfd)); | |
4317 | ||
4318 | /* These attributes aren't processed until later: | |
4319 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
4320 | However, the attribute is found in the stub which we won't have later. | |
4321 | In order to not impose this complication on the rest of the code, | |
4322 | we read them here and copy them to the DWO CU/TU die. */ | |
3019eac3 DE |
4323 | |
4324 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
4325 | DWO file. */ | |
42e7ad6c | 4326 | stmt_list = NULL; |
3019eac3 DE |
4327 | if (! this_cu->is_debug_types) |
4328 | stmt_list = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); | |
4329 | low_pc = dwarf2_attr (comp_unit_die, DW_AT_low_pc, cu); | |
4330 | high_pc = dwarf2_attr (comp_unit_die, DW_AT_high_pc, cu); | |
4331 | ranges = dwarf2_attr (comp_unit_die, DW_AT_ranges, cu); | |
42e7ad6c | 4332 | comp_dir = dwarf2_attr (comp_unit_die, DW_AT_comp_dir, cu); |
3019eac3 DE |
4333 | |
4334 | /* There should be a DW_AT_addr_base attribute here (if needed). | |
4335 | We need the value before we can process DW_FORM_GNU_addr_index. */ | |
4336 | cu->addr_base = 0; | |
3019eac3 DE |
4337 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_addr_base, cu); |
4338 | if (attr) | |
2e3cf129 DE |
4339 | cu->addr_base = DW_UNSND (attr); |
4340 | ||
4341 | /* There should be a DW_AT_ranges_base attribute here (if needed). | |
4342 | We need the value before we can process DW_AT_ranges. */ | |
4343 | cu->ranges_base = 0; | |
4344 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_ranges_base, cu); | |
4345 | if (attr) | |
4346 | cu->ranges_base = DW_UNSND (attr); | |
3019eac3 DE |
4347 | |
4348 | if (this_cu->is_debug_types) | |
4349 | { | |
4350 | gdb_assert (sig_type != NULL); | |
4351 | signature = sig_type->signature; | |
4352 | } | |
4353 | else | |
4354 | { | |
4355 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
4356 | if (! attr) | |
4357 | error (_("Dwarf Error: missing dwo_id [in module %s]"), | |
4358 | dwo_name); | |
4359 | signature = DW_UNSND (attr); | |
4360 | } | |
4361 | ||
4362 | /* We may need the comp_dir in order to find the DWO file. */ | |
42e7ad6c DE |
4363 | comp_dir_string = NULL; |
4364 | if (comp_dir) | |
4365 | comp_dir_string = DW_STRING (comp_dir); | |
3019eac3 DE |
4366 | |
4367 | if (this_cu->is_debug_types) | |
42e7ad6c | 4368 | dwo_unit = lookup_dwo_type_unit (sig_type, dwo_name, comp_dir_string); |
3019eac3 | 4369 | else |
42e7ad6c | 4370 | dwo_unit = lookup_dwo_comp_unit (this_cu, dwo_name, comp_dir_string, |
3019eac3 DE |
4371 | signature); |
4372 | ||
4373 | if (dwo_unit == NULL) | |
4374 | { | |
4375 | error (_("Dwarf Error: CU at offset 0x%x references unknown DWO" | |
4376 | " with ID %s [in module %s]"), | |
4377 | this_cu->offset.sect_off, | |
4378 | phex (signature, sizeof (signature)), | |
4379 | objfile->name); | |
4380 | } | |
4381 | ||
4382 | /* Set up for reading the DWO CU/TU. */ | |
4383 | cu->dwo_unit = dwo_unit; | |
4384 | section = dwo_unit->info_or_types_section; | |
4385 | begin_info_ptr = info_ptr = section->buffer + dwo_unit->offset.sect_off; | |
4bdcc0c1 | 4386 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; |
3019eac3 DE |
4387 | init_cu_die_reader (&reader, cu, section, dwo_unit->dwo_file); |
4388 | ||
4389 | if (this_cu->is_debug_types) | |
4390 | { | |
4391 | ULONGEST signature; | |
4392 | ||
4bdcc0c1 DE |
4393 | info_ptr = read_and_check_type_unit_head (&cu->header, section, |
4394 | dwo_abbrev_section, | |
4395 | info_ptr, | |
3019eac3 DE |
4396 | &signature, NULL); |
4397 | gdb_assert (sig_type->signature == signature); | |
4398 | gdb_assert (dwo_unit->offset.sect_off == cu->header.offset.sect_off); | |
1ce1cefd | 4399 | gdb_assert (dwo_unit->length == get_cu_length (&cu->header)); |
3019eac3 DE |
4400 | |
4401 | /* Establish the type offset that can be used to lookup the type. | |
4402 | For DWO files, we don't know it until now. */ | |
4403 | sig_type->type_offset_in_section.sect_off = | |
4404 | dwo_unit->offset.sect_off + dwo_unit->type_offset_in_tu.cu_off; | |
4405 | } | |
4406 | else | |
4407 | { | |
4bdcc0c1 DE |
4408 | info_ptr = read_and_check_comp_unit_head (&cu->header, section, |
4409 | dwo_abbrev_section, | |
4410 | info_ptr, 0); | |
3019eac3 | 4411 | gdb_assert (dwo_unit->offset.sect_off == cu->header.offset.sect_off); |
1ce1cefd | 4412 | gdb_assert (dwo_unit->length == get_cu_length (&cu->header)); |
3019eac3 DE |
4413 | } |
4414 | ||
4415 | /* Discard the original CU's abbrev table, and read the DWO's. */ | |
f4dc4d17 DE |
4416 | if (abbrev_table == NULL) |
4417 | { | |
4418 | dwarf2_free_abbrev_table (cu); | |
4419 | dwarf2_read_abbrevs (cu, dwo_abbrev_section); | |
4420 | } | |
4421 | else | |
4422 | { | |
4423 | dwarf2_read_abbrevs (cu, dwo_abbrev_section); | |
4424 | make_cleanup (dwarf2_free_abbrev_table, cu); | |
4425 | } | |
3019eac3 DE |
4426 | |
4427 | /* Read in the die, but leave space to copy over the attributes | |
4428 | from the stub. This has the benefit of simplifying the rest of | |
4429 | the code - all the real work is done here. */ | |
4430 | num_extra_attrs = ((stmt_list != NULL) | |
4431 | + (low_pc != NULL) | |
4432 | + (high_pc != NULL) | |
42e7ad6c DE |
4433 | + (ranges != NULL) |
4434 | + (comp_dir != NULL)); | |
3019eac3 DE |
4435 | info_ptr = read_full_die_1 (&reader, &comp_unit_die, info_ptr, |
4436 | &has_children, num_extra_attrs); | |
4437 | ||
4438 | /* Copy over the attributes from the stub to the DWO die. */ | |
4439 | i = comp_unit_die->num_attrs; | |
4440 | if (stmt_list != NULL) | |
4441 | comp_unit_die->attrs[i++] = *stmt_list; | |
4442 | if (low_pc != NULL) | |
4443 | comp_unit_die->attrs[i++] = *low_pc; | |
4444 | if (high_pc != NULL) | |
4445 | comp_unit_die->attrs[i++] = *high_pc; | |
4446 | if (ranges != NULL) | |
4447 | comp_unit_die->attrs[i++] = *ranges; | |
42e7ad6c DE |
4448 | if (comp_dir != NULL) |
4449 | comp_unit_die->attrs[i++] = *comp_dir; | |
3019eac3 DE |
4450 | comp_unit_die->num_attrs += num_extra_attrs; |
4451 | ||
4452 | /* Skip dummy compilation units. */ | |
4453 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
4454 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
4455 | { | |
4456 | do_cleanups (cleanups); | |
4457 | return; | |
4458 | } | |
4459 | } | |
4460 | ||
dee91e82 DE |
4461 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); |
4462 | ||
4463 | if (free_cu_cleanup != NULL) | |
348e048f | 4464 | { |
dee91e82 DE |
4465 | if (keep) |
4466 | { | |
4467 | /* We've successfully allocated this compilation unit. Let our | |
4468 | caller clean it up when finished with it. */ | |
4469 | discard_cleanups (free_cu_cleanup); | |
4470 | ||
4471 | /* We can only discard free_cu_cleanup and all subsequent cleanups. | |
4472 | So we have to manually free the abbrev table. */ | |
4473 | dwarf2_free_abbrev_table (cu); | |
4474 | ||
4475 | /* Link this CU into read_in_chain. */ | |
4476 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
4477 | dwarf2_per_objfile->read_in_chain = this_cu; | |
4478 | } | |
4479 | else | |
4480 | do_cleanups (free_cu_cleanup); | |
348e048f | 4481 | } |
dee91e82 DE |
4482 | |
4483 | do_cleanups (cleanups); | |
4484 | } | |
4485 | ||
3019eac3 DE |
4486 | /* Read CU/TU THIS_CU in section SECTION, |
4487 | but do not follow DW_AT_GNU_dwo_name if present. | |
4488 | DWO_FILE, if non-NULL, is the DWO file to read (the caller is assumed to | |
4489 | have already done the lookup to find the DWO file). | |
dee91e82 DE |
4490 | |
4491 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 4492 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
4493 | |
4494 | We fill in THIS_CU->length. | |
4495 | ||
4496 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
4497 | linker) then DIE_READER_FUNC will not get called. | |
4498 | ||
4499 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
4500 | This is done in order to not leave THIS_CU->cu in a state where we have |
4501 | to care whether it refers to the "main" CU or the DWO CU. */ | |
dee91e82 DE |
4502 | |
4503 | static void | |
4504 | init_cutu_and_read_dies_no_follow (struct dwarf2_per_cu_data *this_cu, | |
4505 | struct dwarf2_section_info *abbrev_section, | |
3019eac3 | 4506 | struct dwo_file *dwo_file, |
dee91e82 DE |
4507 | die_reader_func_ftype *die_reader_func, |
4508 | void *data) | |
4509 | { | |
4510 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
3019eac3 DE |
4511 | struct dwarf2_section_info *section = this_cu->info_or_types_section; |
4512 | bfd *abfd = section->asection->owner; | |
dee91e82 DE |
4513 | struct dwarf2_cu cu; |
4514 | gdb_byte *begin_info_ptr, *info_ptr; | |
4515 | struct die_reader_specs reader; | |
4516 | struct cleanup *cleanups; | |
4517 | struct die_info *comp_unit_die; | |
4518 | int has_children; | |
4519 | ||
09406207 DE |
4520 | if (dwarf2_die_debug) |
4521 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset 0x%x\n", | |
4522 | this_cu->is_debug_types ? "type" : "comp", | |
4523 | this_cu->offset.sect_off); | |
4524 | ||
dee91e82 DE |
4525 | gdb_assert (this_cu->cu == NULL); |
4526 | ||
dee91e82 DE |
4527 | /* This is cheap if the section is already read in. */ |
4528 | dwarf2_read_section (objfile, section); | |
4529 | ||
4530 | init_one_comp_unit (&cu, this_cu); | |
4531 | ||
4532 | cleanups = make_cleanup (free_stack_comp_unit, &cu); | |
4533 | ||
4534 | begin_info_ptr = info_ptr = section->buffer + this_cu->offset.sect_off; | |
4bdcc0c1 DE |
4535 | info_ptr = read_and_check_comp_unit_head (&cu.header, section, |
4536 | abbrev_section, info_ptr, | |
3019eac3 | 4537 | this_cu->is_debug_types); |
dee91e82 | 4538 | |
1ce1cefd | 4539 | this_cu->length = get_cu_length (&cu.header); |
dee91e82 DE |
4540 | |
4541 | /* Skip dummy compilation units. */ | |
4542 | if (info_ptr >= begin_info_ptr + this_cu->length | |
4543 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
c906108c | 4544 | { |
dee91e82 | 4545 | do_cleanups (cleanups); |
21b2bd31 | 4546 | return; |
93311388 | 4547 | } |
72bf9492 | 4548 | |
dee91e82 DE |
4549 | dwarf2_read_abbrevs (&cu, abbrev_section); |
4550 | make_cleanup (dwarf2_free_abbrev_table, &cu); | |
4551 | ||
3019eac3 | 4552 | init_cu_die_reader (&reader, &cu, section, dwo_file); |
dee91e82 DE |
4553 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
4554 | ||
4555 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
4556 | ||
4557 | do_cleanups (cleanups); | |
4558 | } | |
4559 | ||
3019eac3 DE |
4560 | /* Read a CU/TU, except that this does not look for DW_AT_GNU_dwo_name and |
4561 | does not lookup the specified DWO file. | |
4562 | This cannot be used to read DWO files. | |
dee91e82 DE |
4563 | |
4564 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
4565 | This is done in order to not leave THIS_CU->cu in a state where we have |
4566 | to care whether it refers to the "main" CU or the DWO CU. | |
4567 | We can revisit this if the data shows there's a performance issue. */ | |
dee91e82 DE |
4568 | |
4569 | static void | |
4570 | init_cutu_and_read_dies_simple (struct dwarf2_per_cu_data *this_cu, | |
4571 | die_reader_func_ftype *die_reader_func, | |
4572 | void *data) | |
4573 | { | |
4574 | init_cutu_and_read_dies_no_follow (this_cu, | |
4575 | &dwarf2_per_objfile->abbrev, | |
3019eac3 | 4576 | NULL, |
dee91e82 DE |
4577 | die_reader_func, data); |
4578 | } | |
4579 | ||
f4dc4d17 DE |
4580 | /* Create a psymtab named NAME and assign it to PER_CU. |
4581 | ||
4582 | The caller must fill in the following details: | |
4583 | dirname, textlow, texthigh. */ | |
4584 | ||
4585 | static struct partial_symtab * | |
4586 | create_partial_symtab (struct dwarf2_per_cu_data *per_cu, const char *name) | |
4587 | { | |
4588 | struct objfile *objfile = per_cu->objfile; | |
4589 | struct partial_symtab *pst; | |
4590 | ||
4591 | pst = start_psymtab_common (objfile, objfile->section_offsets, | |
4592 | name, 0, | |
4593 | objfile->global_psymbols.next, | |
4594 | objfile->static_psymbols.next); | |
4595 | ||
4596 | pst->psymtabs_addrmap_supported = 1; | |
4597 | ||
4598 | /* This is the glue that links PST into GDB's symbol API. */ | |
4599 | pst->read_symtab_private = per_cu; | |
4600 | pst->read_symtab = dwarf2_psymtab_to_symtab; | |
4601 | per_cu->v.psymtab = pst; | |
4602 | ||
4603 | return pst; | |
4604 | } | |
4605 | ||
dee91e82 DE |
4606 | /* die_reader_func for process_psymtab_comp_unit. */ |
4607 | ||
4608 | static void | |
4609 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
4610 | gdb_byte *info_ptr, | |
4611 | struct die_info *comp_unit_die, | |
4612 | int has_children, | |
4613 | void *data) | |
4614 | { | |
4615 | struct dwarf2_cu *cu = reader->cu; | |
4616 | struct objfile *objfile = cu->objfile; | |
4617 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
dee91e82 DE |
4618 | struct attribute *attr; |
4619 | CORE_ADDR baseaddr; | |
4620 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
4621 | struct partial_symtab *pst; | |
4622 | int has_pc_info; | |
4623 | const char *filename; | |
95554aad | 4624 | int *want_partial_unit_ptr = data; |
dee91e82 | 4625 | |
95554aad TT |
4626 | if (comp_unit_die->tag == DW_TAG_partial_unit |
4627 | && (want_partial_unit_ptr == NULL | |
4628 | || !*want_partial_unit_ptr)) | |
dee91e82 DE |
4629 | return; |
4630 | ||
f4dc4d17 DE |
4631 | gdb_assert (! per_cu->is_debug_types); |
4632 | ||
95554aad | 4633 | prepare_one_comp_unit (cu, comp_unit_die, language_minimal); |
dee91e82 DE |
4634 | |
4635 | cu->list_in_scope = &file_symbols; | |
c906108c | 4636 | |
93311388 | 4637 | /* Allocate a new partial symbol table structure. */ |
dee91e82 | 4638 | attr = dwarf2_attr (comp_unit_die, DW_AT_name, cu); |
3e2a0cee TT |
4639 | if (attr == NULL || !DW_STRING (attr)) |
4640 | filename = ""; | |
4641 | else | |
4642 | filename = DW_STRING (attr); | |
72bf9492 | 4643 | |
f4dc4d17 DE |
4644 | pst = create_partial_symtab (per_cu, filename); |
4645 | ||
4646 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
dee91e82 | 4647 | attr = dwarf2_attr (comp_unit_die, DW_AT_comp_dir, cu); |
d85a05f0 DJ |
4648 | if (attr != NULL) |
4649 | pst->dirname = DW_STRING (attr); | |
72bf9492 | 4650 | |
93311388 | 4651 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
e7c27a73 | 4652 | |
dee91e82 | 4653 | dwarf2_find_base_address (comp_unit_die, cu); |
d85a05f0 | 4654 | |
93311388 DE |
4655 | /* Possibly set the default values of LOWPC and HIGHPC from |
4656 | `DW_AT_ranges'. */ | |
d85a05f0 | 4657 | has_pc_info = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
dee91e82 | 4658 | &best_highpc, cu, pst); |
d85a05f0 | 4659 | if (has_pc_info == 1 && best_lowpc < best_highpc) |
93311388 DE |
4660 | /* Store the contiguous range if it is not empty; it can be empty for |
4661 | CUs with no code. */ | |
4662 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
d85a05f0 DJ |
4663 | best_lowpc + baseaddr, |
4664 | best_highpc + baseaddr - 1, pst); | |
93311388 DE |
4665 | |
4666 | /* Check if comp unit has_children. | |
4667 | If so, read the rest of the partial symbols from this comp unit. | |
0963b4bd | 4668 | If not, there's no more debug_info for this comp unit. */ |
d85a05f0 | 4669 | if (has_children) |
93311388 DE |
4670 | { |
4671 | struct partial_die_info *first_die; | |
4672 | CORE_ADDR lowpc, highpc; | |
31ffec48 | 4673 | |
93311388 DE |
4674 | lowpc = ((CORE_ADDR) -1); |
4675 | highpc = ((CORE_ADDR) 0); | |
c906108c | 4676 | |
dee91e82 | 4677 | first_die = load_partial_dies (reader, info_ptr, 1); |
c906108c | 4678 | |
93311388 | 4679 | scan_partial_symbols (first_die, &lowpc, &highpc, |
dee91e82 | 4680 | ! has_pc_info, cu); |
57c22c6c | 4681 | |
93311388 DE |
4682 | /* If we didn't find a lowpc, set it to highpc to avoid |
4683 | complaints from `maint check'. */ | |
4684 | if (lowpc == ((CORE_ADDR) -1)) | |
4685 | lowpc = highpc; | |
10b3939b | 4686 | |
93311388 DE |
4687 | /* If the compilation unit didn't have an explicit address range, |
4688 | then use the information extracted from its child dies. */ | |
d85a05f0 | 4689 | if (! has_pc_info) |
93311388 | 4690 | { |
d85a05f0 DJ |
4691 | best_lowpc = lowpc; |
4692 | best_highpc = highpc; | |
93311388 DE |
4693 | } |
4694 | } | |
d85a05f0 DJ |
4695 | pst->textlow = best_lowpc + baseaddr; |
4696 | pst->texthigh = best_highpc + baseaddr; | |
c906108c | 4697 | |
93311388 DE |
4698 | pst->n_global_syms = objfile->global_psymbols.next - |
4699 | (objfile->global_psymbols.list + pst->globals_offset); | |
4700 | pst->n_static_syms = objfile->static_psymbols.next - | |
4701 | (objfile->static_psymbols.list + pst->statics_offset); | |
4702 | sort_pst_symbols (pst); | |
c906108c | 4703 | |
f4dc4d17 | 4704 | if (!VEC_empty (dwarf2_per_cu_ptr, cu->per_cu->s.imported_symtabs)) |
95554aad TT |
4705 | { |
4706 | int i; | |
f4dc4d17 | 4707 | int len = VEC_length (dwarf2_per_cu_ptr, cu->per_cu->s.imported_symtabs); |
95554aad TT |
4708 | struct dwarf2_per_cu_data *iter; |
4709 | ||
4710 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
4711 | post-pass. */ | |
4712 | pst->number_of_dependencies = len; | |
4713 | pst->dependencies = obstack_alloc (&objfile->objfile_obstack, | |
4714 | len * sizeof (struct symtab *)); | |
4715 | for (i = 0; | |
f4dc4d17 | 4716 | VEC_iterate (dwarf2_per_cu_ptr, cu->per_cu->s.imported_symtabs, |
95554aad TT |
4717 | i, iter); |
4718 | ++i) | |
4719 | pst->dependencies[i] = iter->v.psymtab; | |
4720 | ||
f4dc4d17 | 4721 | VEC_free (dwarf2_per_cu_ptr, cu->per_cu->s.imported_symtabs); |
95554aad TT |
4722 | } |
4723 | ||
f4dc4d17 DE |
4724 | /* Get the list of files included in the current compilation unit, |
4725 | and build a psymtab for each of them. */ | |
4726 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
09406207 DE |
4727 | |
4728 | if (dwarf2_read_debug) | |
4729 | { | |
4730 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
4731 | ||
4732 | fprintf_unfiltered (gdb_stdlog, | |
4733 | "Psymtab for %s unit @0x%x: 0x%s - 0x%s" | |
4734 | ", %d global, %d static syms\n", | |
4735 | per_cu->is_debug_types ? "type" : "comp", | |
4736 | per_cu->offset.sect_off, | |
4737 | paddress (gdbarch, pst->textlow), | |
4738 | paddress (gdbarch, pst->texthigh), | |
4739 | pst->n_global_syms, pst->n_static_syms); | |
4740 | } | |
dee91e82 | 4741 | } |
ae038cb0 | 4742 | |
dee91e82 DE |
4743 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. |
4744 | Process compilation unit THIS_CU for a psymtab. */ | |
4745 | ||
4746 | static void | |
95554aad TT |
4747 | process_psymtab_comp_unit (struct dwarf2_per_cu_data *this_cu, |
4748 | int want_partial_unit) | |
dee91e82 DE |
4749 | { |
4750 | /* If this compilation unit was already read in, free the | |
4751 | cached copy in order to read it in again. This is | |
4752 | necessary because we skipped some symbols when we first | |
4753 | read in the compilation unit (see load_partial_dies). | |
4754 | This problem could be avoided, but the benefit is unclear. */ | |
4755 | if (this_cu->cu != NULL) | |
4756 | free_one_cached_comp_unit (this_cu); | |
4757 | ||
3019eac3 | 4758 | gdb_assert (! this_cu->is_debug_types); |
f4dc4d17 DE |
4759 | init_cutu_and_read_dies (this_cu, NULL, 0, 0, |
4760 | process_psymtab_comp_unit_reader, | |
95554aad | 4761 | &want_partial_unit); |
dee91e82 DE |
4762 | |
4763 | /* Age out any secondary CUs. */ | |
4764 | age_cached_comp_units (); | |
93311388 | 4765 | } |
ff013f42 | 4766 | |
f4dc4d17 DE |
4767 | static hashval_t |
4768 | hash_type_unit_group (const void *item) | |
4769 | { | |
094b34ac | 4770 | const struct type_unit_group *tu_group = item; |
f4dc4d17 | 4771 | |
094b34ac | 4772 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 4773 | } |
348e048f DE |
4774 | |
4775 | static int | |
f4dc4d17 | 4776 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 4777 | { |
f4dc4d17 DE |
4778 | const struct type_unit_group *lhs = item_lhs; |
4779 | const struct type_unit_group *rhs = item_rhs; | |
348e048f | 4780 | |
094b34ac | 4781 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 4782 | } |
348e048f | 4783 | |
f4dc4d17 DE |
4784 | /* Allocate a hash table for type unit groups. */ |
4785 | ||
4786 | static htab_t | |
4787 | allocate_type_unit_groups_table (void) | |
4788 | { | |
4789 | return htab_create_alloc_ex (3, | |
4790 | hash_type_unit_group, | |
4791 | eq_type_unit_group, | |
4792 | NULL, | |
4793 | &dwarf2_per_objfile->objfile->objfile_obstack, | |
4794 | hashtab_obstack_allocate, | |
4795 | dummy_obstack_deallocate); | |
4796 | } | |
dee91e82 | 4797 | |
f4dc4d17 DE |
4798 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
4799 | partial symtabs. We combine several TUs per psymtab to not let the size | |
4800 | of any one psymtab grow too big. */ | |
4801 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
4802 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 4803 | |
094b34ac | 4804 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
4805 | Create the type_unit_group object used to hold one or more TUs. */ |
4806 | ||
4807 | static struct type_unit_group * | |
094b34ac | 4808 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 DE |
4809 | { |
4810 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
094b34ac | 4811 | struct dwarf2_per_cu_data *per_cu; |
f4dc4d17 | 4812 | struct type_unit_group *tu_group; |
f4dc4d17 DE |
4813 | |
4814 | tu_group = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4815 | struct type_unit_group); | |
094b34ac | 4816 | per_cu = &tu_group->per_cu; |
f4dc4d17 DE |
4817 | per_cu->objfile = objfile; |
4818 | per_cu->is_debug_types = 1; | |
4819 | per_cu->s.type_unit_group = tu_group; | |
4820 | ||
094b34ac DE |
4821 | if (dwarf2_per_objfile->using_index) |
4822 | { | |
4823 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4824 | struct dwarf2_per_cu_quick_data); | |
4825 | tu_group->t.first_tu = cu->per_cu; | |
4826 | } | |
4827 | else | |
4828 | { | |
4829 | unsigned int line_offset = line_offset_struct.sect_off; | |
4830 | struct partial_symtab *pst; | |
4831 | char *name; | |
4832 | ||
4833 | /* Give the symtab a useful name for debug purposes. */ | |
4834 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
4835 | name = xstrprintf ("<type_units_%d>", | |
4836 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
4837 | else | |
4838 | name = xstrprintf ("<type_units_at_0x%x>", line_offset); | |
4839 | ||
4840 | pst = create_partial_symtab (per_cu, name); | |
4841 | pst->anonymous = 1; | |
f4dc4d17 | 4842 | |
094b34ac DE |
4843 | xfree (name); |
4844 | } | |
f4dc4d17 | 4845 | |
094b34ac DE |
4846 | tu_group->hash.dwo_unit = cu->dwo_unit; |
4847 | tu_group->hash.line_offset = line_offset_struct; | |
f4dc4d17 DE |
4848 | |
4849 | return tu_group; | |
4850 | } | |
4851 | ||
094b34ac DE |
4852 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
4853 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
4854 | |
4855 | static struct type_unit_group * | |
094b34ac | 4856 | get_type_unit_group (struct dwarf2_cu *cu, struct attribute *stmt_list) |
f4dc4d17 DE |
4857 | { |
4858 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
4859 | struct type_unit_group *tu_group; | |
4860 | void **slot; | |
4861 | unsigned int line_offset; | |
4862 | struct type_unit_group type_unit_group_for_lookup; | |
4863 | ||
4864 | if (dwarf2_per_objfile->type_unit_groups == NULL) | |
4865 | { | |
4866 | dwarf2_per_objfile->type_unit_groups = | |
4867 | allocate_type_unit_groups_table (); | |
4868 | } | |
4869 | ||
4870 | /* Do we need to create a new group, or can we use an existing one? */ | |
4871 | ||
4872 | if (stmt_list) | |
4873 | { | |
4874 | line_offset = DW_UNSND (stmt_list); | |
4875 | ++tu_stats->nr_symtab_sharers; | |
4876 | } | |
4877 | else | |
4878 | { | |
4879 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
4880 | We can do various things here like create one group per TU or | |
4881 | spread them over multiple groups to split up the expansion work. | |
4882 | To avoid worst case scenarios (too many groups or too large groups) | |
4883 | we, umm, group them in bunches. */ | |
4884 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
4885 | | (tu_stats->nr_stmt_less_type_units | |
4886 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
4887 | ++tu_stats->nr_stmt_less_type_units; | |
4888 | } | |
4889 | ||
094b34ac DE |
4890 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
4891 | type_unit_group_for_lookup.hash.line_offset.sect_off = line_offset; | |
f4dc4d17 DE |
4892 | slot = htab_find_slot (dwarf2_per_objfile->type_unit_groups, |
4893 | &type_unit_group_for_lookup, INSERT); | |
4894 | if (*slot != NULL) | |
4895 | { | |
4896 | tu_group = *slot; | |
4897 | gdb_assert (tu_group != NULL); | |
4898 | } | |
4899 | else | |
4900 | { | |
4901 | sect_offset line_offset_struct; | |
4902 | ||
4903 | line_offset_struct.sect_off = line_offset; | |
094b34ac | 4904 | tu_group = create_type_unit_group (cu, line_offset_struct); |
f4dc4d17 DE |
4905 | *slot = tu_group; |
4906 | ++tu_stats->nr_symtabs; | |
4907 | } | |
4908 | ||
4909 | return tu_group; | |
4910 | } | |
4911 | ||
4912 | /* Struct used to sort TUs by their abbreviation table offset. */ | |
4913 | ||
4914 | struct tu_abbrev_offset | |
4915 | { | |
4916 | struct signatured_type *sig_type; | |
4917 | sect_offset abbrev_offset; | |
4918 | }; | |
4919 | ||
4920 | /* Helper routine for build_type_unit_groups, passed to qsort. */ | |
4921 | ||
4922 | static int | |
4923 | sort_tu_by_abbrev_offset (const void *ap, const void *bp) | |
4924 | { | |
4925 | const struct tu_abbrev_offset * const *a = ap; | |
4926 | const struct tu_abbrev_offset * const *b = bp; | |
4927 | unsigned int aoff = (*a)->abbrev_offset.sect_off; | |
4928 | unsigned int boff = (*b)->abbrev_offset.sect_off; | |
4929 | ||
4930 | return (aoff > boff) - (aoff < boff); | |
4931 | } | |
4932 | ||
4933 | /* A helper function to add a type_unit_group to a table. */ | |
4934 | ||
4935 | static int | |
4936 | add_type_unit_group_to_table (void **slot, void *datum) | |
4937 | { | |
4938 | struct type_unit_group *tu_group = *slot; | |
4939 | struct type_unit_group ***datap = datum; | |
4940 | ||
4941 | **datap = tu_group; | |
4942 | ++*datap; | |
4943 | ||
4944 | return 1; | |
4945 | } | |
4946 | ||
4947 | /* Efficiently read all the type units, calling init_cutu_and_read_dies on | |
4948 | each one passing FUNC,DATA. | |
4949 | ||
4950 | The efficiency is because we sort TUs by the abbrev table they use and | |
4951 | only read each abbrev table once. In one program there are 200K TUs | |
4952 | sharing 8K abbrev tables. | |
4953 | ||
4954 | The main purpose of this function is to support building the | |
4955 | dwarf2_per_objfile->type_unit_groups table. | |
4956 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we | |
4957 | can collapse the search space by grouping them by stmt_list. | |
4958 | The savings can be significant, in the same program from above the 200K TUs | |
4959 | share 8K stmt_list tables. | |
4960 | ||
4961 | FUNC is expected to call get_type_unit_group, which will create the | |
4962 | struct type_unit_group if necessary and add it to | |
4963 | dwarf2_per_objfile->type_unit_groups. */ | |
4964 | ||
4965 | static void | |
4966 | build_type_unit_groups (die_reader_func_ftype *func, void *data) | |
4967 | { | |
4968 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
4969 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
4970 | struct cleanup *cleanups; | |
4971 | struct abbrev_table *abbrev_table; | |
4972 | sect_offset abbrev_offset; | |
4973 | struct tu_abbrev_offset *sorted_by_abbrev; | |
4974 | struct type_unit_group **iter; | |
4975 | int i; | |
4976 | ||
4977 | /* It's up to the caller to not call us multiple times. */ | |
4978 | gdb_assert (dwarf2_per_objfile->type_unit_groups == NULL); | |
4979 | ||
4980 | if (dwarf2_per_objfile->n_type_units == 0) | |
4981 | return; | |
4982 | ||
4983 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
4984 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
4985 | read each abbrev table in. | |
4986 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
4987 | This is simpler and efficient enough for now. | |
4988 | ||
4989 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
4990 | symtab to use). Typically TUs with the same abbrev offset have the same | |
4991 | stmt_list value too so in practice this should work well. | |
4992 | ||
4993 | The basic algorithm here is: | |
4994 | ||
4995 | sort TUs by abbrev table | |
4996 | for each TU with same abbrev table: | |
4997 | read abbrev table if first user | |
4998 | read TU top level DIE | |
4999 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
5000 | call FUNC */ | |
5001 | ||
5002 | if (dwarf2_read_debug) | |
5003 | fprintf_unfiltered (gdb_stdlog, "Building type unit groups ...\n"); | |
5004 | ||
5005 | /* Sort in a separate table to maintain the order of all_type_units | |
5006 | for .gdb_index: TU indices directly index all_type_units. */ | |
5007 | sorted_by_abbrev = XNEWVEC (struct tu_abbrev_offset, | |
5008 | dwarf2_per_objfile->n_type_units); | |
5009 | for (i = 0; i < dwarf2_per_objfile->n_type_units; ++i) | |
5010 | { | |
5011 | struct signatured_type *sig_type = dwarf2_per_objfile->all_type_units[i]; | |
5012 | ||
5013 | sorted_by_abbrev[i].sig_type = sig_type; | |
5014 | sorted_by_abbrev[i].abbrev_offset = | |
5015 | read_abbrev_offset (sig_type->per_cu.info_or_types_section, | |
5016 | sig_type->per_cu.offset); | |
5017 | } | |
5018 | cleanups = make_cleanup (xfree, sorted_by_abbrev); | |
5019 | qsort (sorted_by_abbrev, dwarf2_per_objfile->n_type_units, | |
5020 | sizeof (struct tu_abbrev_offset), sort_tu_by_abbrev_offset); | |
5021 | ||
094b34ac DE |
5022 | /* Note: In the .gdb_index case, get_type_unit_group may have already been |
5023 | called any number of times, so we don't reset tu_stats here. */ | |
5024 | ||
f4dc4d17 DE |
5025 | abbrev_offset.sect_off = ~(unsigned) 0; |
5026 | abbrev_table = NULL; | |
5027 | make_cleanup (abbrev_table_free_cleanup, &abbrev_table); | |
5028 | ||
5029 | for (i = 0; i < dwarf2_per_objfile->n_type_units; ++i) | |
5030 | { | |
5031 | const struct tu_abbrev_offset *tu = &sorted_by_abbrev[i]; | |
5032 | ||
5033 | /* Switch to the next abbrev table if necessary. */ | |
5034 | if (abbrev_table == NULL | |
5035 | || tu->abbrev_offset.sect_off != abbrev_offset.sect_off) | |
5036 | { | |
5037 | if (abbrev_table != NULL) | |
5038 | { | |
5039 | abbrev_table_free (abbrev_table); | |
5040 | /* Reset to NULL in case abbrev_table_read_table throws | |
5041 | an error: abbrev_table_free_cleanup will get called. */ | |
5042 | abbrev_table = NULL; | |
5043 | } | |
5044 | abbrev_offset = tu->abbrev_offset; | |
5045 | abbrev_table = | |
5046 | abbrev_table_read_table (&dwarf2_per_objfile->abbrev, | |
5047 | abbrev_offset); | |
5048 | ++tu_stats->nr_uniq_abbrev_tables; | |
5049 | } | |
5050 | ||
5051 | init_cutu_and_read_dies (&tu->sig_type->per_cu, abbrev_table, 0, 0, | |
5052 | func, data); | |
5053 | } | |
5054 | ||
5055 | /* Create a vector of pointers to primary type units to make it easy to | |
5056 | iterate over them and CUs. See dw2_get_primary_cu. */ | |
5057 | dwarf2_per_objfile->n_type_unit_groups = | |
5058 | htab_elements (dwarf2_per_objfile->type_unit_groups); | |
5059 | dwarf2_per_objfile->all_type_unit_groups = | |
5060 | obstack_alloc (&objfile->objfile_obstack, | |
5061 | dwarf2_per_objfile->n_type_unit_groups | |
5062 | * sizeof (struct type_unit_group *)); | |
5063 | iter = &dwarf2_per_objfile->all_type_unit_groups[0]; | |
5064 | htab_traverse_noresize (dwarf2_per_objfile->type_unit_groups, | |
5065 | add_type_unit_group_to_table, &iter); | |
5066 | gdb_assert (iter - &dwarf2_per_objfile->all_type_unit_groups[0] | |
5067 | == dwarf2_per_objfile->n_type_unit_groups); | |
5068 | ||
5069 | do_cleanups (cleanups); | |
5070 | ||
5071 | if (dwarf2_read_debug) | |
5072 | { | |
5073 | fprintf_unfiltered (gdb_stdlog, "Done building type unit groups:\n"); | |
5074 | fprintf_unfiltered (gdb_stdlog, " %d TUs\n", | |
5075 | dwarf2_per_objfile->n_type_units); | |
5076 | fprintf_unfiltered (gdb_stdlog, " %d uniq abbrev tables\n", | |
5077 | tu_stats->nr_uniq_abbrev_tables); | |
5078 | fprintf_unfiltered (gdb_stdlog, " %d symtabs from stmt_list entries\n", | |
5079 | tu_stats->nr_symtabs); | |
5080 | fprintf_unfiltered (gdb_stdlog, " %d symtab sharers\n", | |
5081 | tu_stats->nr_symtab_sharers); | |
5082 | fprintf_unfiltered (gdb_stdlog, " %d type units without a stmt_list\n", | |
5083 | tu_stats->nr_stmt_less_type_units); | |
5084 | } | |
5085 | } | |
5086 | ||
5087 | /* Reader function for build_type_psymtabs. */ | |
5088 | ||
5089 | static void | |
5090 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
5091 | gdb_byte *info_ptr, | |
5092 | struct die_info *type_unit_die, | |
5093 | int has_children, | |
5094 | void *data) | |
5095 | { | |
5096 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
5097 | struct dwarf2_cu *cu = reader->cu; | |
5098 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
5099 | struct type_unit_group *tu_group; | |
5100 | struct attribute *attr; | |
5101 | struct partial_die_info *first_die; | |
5102 | CORE_ADDR lowpc, highpc; | |
5103 | struct partial_symtab *pst; | |
5104 | ||
5105 | gdb_assert (data == NULL); | |
5106 | ||
5107 | if (! has_children) | |
5108 | return; | |
5109 | ||
5110 | attr = dwarf2_attr_no_follow (type_unit_die, DW_AT_stmt_list); | |
094b34ac | 5111 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 5112 | |
094b34ac | 5113 | VEC_safe_push (dwarf2_per_cu_ptr, tu_group->t.tus, per_cu); |
f4dc4d17 DE |
5114 | |
5115 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
5116 | cu->list_in_scope = &file_symbols; | |
5117 | pst = create_partial_symtab (per_cu, ""); | |
5118 | pst->anonymous = 1; | |
5119 | ||
5120 | first_die = load_partial_dies (reader, info_ptr, 1); | |
5121 | ||
5122 | lowpc = (CORE_ADDR) -1; | |
5123 | highpc = (CORE_ADDR) 0; | |
5124 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
5125 | ||
5126 | pst->n_global_syms = objfile->global_psymbols.next - | |
5127 | (objfile->global_psymbols.list + pst->globals_offset); | |
5128 | pst->n_static_syms = objfile->static_psymbols.next - | |
5129 | (objfile->static_psymbols.list + pst->statics_offset); | |
5130 | sort_pst_symbols (pst); | |
5131 | } | |
5132 | ||
5133 | /* Traversal function for build_type_psymtabs. */ | |
5134 | ||
5135 | static int | |
5136 | build_type_psymtab_dependencies (void **slot, void *info) | |
5137 | { | |
5138 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
5139 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; | |
094b34ac | 5140 | struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu; |
f4dc4d17 | 5141 | struct partial_symtab *pst = per_cu->v.psymtab; |
094b34ac | 5142 | int len = VEC_length (dwarf2_per_cu_ptr, tu_group->t.tus); |
f4dc4d17 DE |
5143 | struct dwarf2_per_cu_data *iter; |
5144 | int i; | |
5145 | ||
5146 | gdb_assert (len > 0); | |
5147 | ||
5148 | pst->number_of_dependencies = len; | |
5149 | pst->dependencies = obstack_alloc (&objfile->objfile_obstack, | |
5150 | len * sizeof (struct psymtab *)); | |
5151 | for (i = 0; | |
094b34ac | 5152 | VEC_iterate (dwarf2_per_cu_ptr, tu_group->t.tus, i, iter); |
f4dc4d17 DE |
5153 | ++i) |
5154 | { | |
5155 | pst->dependencies[i] = iter->v.psymtab; | |
5156 | iter->s.type_unit_group = tu_group; | |
5157 | } | |
5158 | ||
094b34ac | 5159 | VEC_free (dwarf2_per_cu_ptr, tu_group->t.tus); |
348e048f DE |
5160 | |
5161 | return 1; | |
5162 | } | |
5163 | ||
5164 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
5165 | Build partial symbol tables for the .debug_types comp-units. */ | |
5166 | ||
5167 | static void | |
5168 | build_type_psymtabs (struct objfile *objfile) | |
5169 | { | |
0e50663e | 5170 | if (! create_all_type_units (objfile)) |
348e048f DE |
5171 | return; |
5172 | ||
f4dc4d17 DE |
5173 | build_type_unit_groups (build_type_psymtabs_reader, NULL); |
5174 | ||
5175 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
5176 | htab_traverse_noresize (dwarf2_per_objfile->type_unit_groups, | |
5177 | build_type_psymtab_dependencies, NULL); | |
348e048f DE |
5178 | } |
5179 | ||
60606b2c TT |
5180 | /* A cleanup function that clears objfile's psymtabs_addrmap field. */ |
5181 | ||
5182 | static void | |
5183 | psymtabs_addrmap_cleanup (void *o) | |
5184 | { | |
5185 | struct objfile *objfile = o; | |
ec61707d | 5186 | |
60606b2c TT |
5187 | objfile->psymtabs_addrmap = NULL; |
5188 | } | |
5189 | ||
95554aad TT |
5190 | /* Compute the 'user' field for each psymtab in OBJFILE. */ |
5191 | ||
5192 | static void | |
5193 | set_partial_user (struct objfile *objfile) | |
5194 | { | |
5195 | int i; | |
5196 | ||
5197 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
5198 | { | |
5199 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); | |
5200 | struct partial_symtab *pst = per_cu->v.psymtab; | |
5201 | int j; | |
5202 | ||
5203 | for (j = 0; j < pst->number_of_dependencies; ++j) | |
5204 | { | |
5205 | /* Set the 'user' field only if it is not already set. */ | |
5206 | if (pst->dependencies[j]->user == NULL) | |
5207 | pst->dependencies[j]->user = pst; | |
5208 | } | |
5209 | } | |
5210 | } | |
5211 | ||
93311388 DE |
5212 | /* Build the partial symbol table by doing a quick pass through the |
5213 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 5214 | |
93311388 | 5215 | static void |
c67a9c90 | 5216 | dwarf2_build_psymtabs_hard (struct objfile *objfile) |
93311388 | 5217 | { |
60606b2c TT |
5218 | struct cleanup *back_to, *addrmap_cleanup; |
5219 | struct obstack temp_obstack; | |
21b2bd31 | 5220 | int i; |
93311388 | 5221 | |
45cfd468 DE |
5222 | if (dwarf2_read_debug) |
5223 | { | |
5224 | fprintf_unfiltered (gdb_stdlog, "Building psymtabs of objfile %s ...\n", | |
5225 | objfile->name); | |
5226 | } | |
5227 | ||
98bfdba5 PA |
5228 | dwarf2_per_objfile->reading_partial_symbols = 1; |
5229 | ||
be391dca | 5230 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
91c24f0a | 5231 | |
93311388 DE |
5232 | /* Any cached compilation units will be linked by the per-objfile |
5233 | read_in_chain. Make sure to free them when we're done. */ | |
5234 | back_to = make_cleanup (free_cached_comp_units, NULL); | |
72bf9492 | 5235 | |
348e048f DE |
5236 | build_type_psymtabs (objfile); |
5237 | ||
93311388 | 5238 | create_all_comp_units (objfile); |
c906108c | 5239 | |
60606b2c TT |
5240 | /* Create a temporary address map on a temporary obstack. We later |
5241 | copy this to the final obstack. */ | |
5242 | obstack_init (&temp_obstack); | |
5243 | make_cleanup_obstack_free (&temp_obstack); | |
5244 | objfile->psymtabs_addrmap = addrmap_create_mutable (&temp_obstack); | |
5245 | addrmap_cleanup = make_cleanup (psymtabs_addrmap_cleanup, objfile); | |
72bf9492 | 5246 | |
21b2bd31 | 5247 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
93311388 | 5248 | { |
21b2bd31 | 5249 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
aaa75496 | 5250 | |
95554aad | 5251 | process_psymtab_comp_unit (per_cu, 0); |
c906108c | 5252 | } |
ff013f42 | 5253 | |
95554aad TT |
5254 | set_partial_user (objfile); |
5255 | ||
ff013f42 JK |
5256 | objfile->psymtabs_addrmap = addrmap_create_fixed (objfile->psymtabs_addrmap, |
5257 | &objfile->objfile_obstack); | |
60606b2c | 5258 | discard_cleanups (addrmap_cleanup); |
ff013f42 | 5259 | |
ae038cb0 | 5260 | do_cleanups (back_to); |
45cfd468 DE |
5261 | |
5262 | if (dwarf2_read_debug) | |
5263 | fprintf_unfiltered (gdb_stdlog, "Done building psymtabs of %s\n", | |
5264 | objfile->name); | |
ae038cb0 DJ |
5265 | } |
5266 | ||
3019eac3 | 5267 | /* die_reader_func for load_partial_comp_unit. */ |
ae038cb0 DJ |
5268 | |
5269 | static void | |
dee91e82 DE |
5270 | load_partial_comp_unit_reader (const struct die_reader_specs *reader, |
5271 | gdb_byte *info_ptr, | |
5272 | struct die_info *comp_unit_die, | |
5273 | int has_children, | |
5274 | void *data) | |
ae038cb0 | 5275 | { |
dee91e82 | 5276 | struct dwarf2_cu *cu = reader->cu; |
ae038cb0 | 5277 | |
95554aad | 5278 | prepare_one_comp_unit (cu, comp_unit_die, language_minimal); |
ae038cb0 | 5279 | |
ae038cb0 DJ |
5280 | /* Check if comp unit has_children. |
5281 | If so, read the rest of the partial symbols from this comp unit. | |
0963b4bd | 5282 | If not, there's no more debug_info for this comp unit. */ |
d85a05f0 | 5283 | if (has_children) |
dee91e82 DE |
5284 | load_partial_dies (reader, info_ptr, 0); |
5285 | } | |
98bfdba5 | 5286 | |
dee91e82 DE |
5287 | /* Load the partial DIEs for a secondary CU into memory. |
5288 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 5289 | |
dee91e82 DE |
5290 | static void |
5291 | load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu) | |
5292 | { | |
f4dc4d17 DE |
5293 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, |
5294 | load_partial_comp_unit_reader, NULL); | |
ae038cb0 DJ |
5295 | } |
5296 | ||
9cdd5dbd DE |
5297 | /* Create a list of all compilation units in OBJFILE. |
5298 | This is only done for -readnow and building partial symtabs. */ | |
ae038cb0 DJ |
5299 | |
5300 | static void | |
5301 | create_all_comp_units (struct objfile *objfile) | |
5302 | { | |
5303 | int n_allocated; | |
5304 | int n_comp_units; | |
5305 | struct dwarf2_per_cu_data **all_comp_units; | |
be391dca TT |
5306 | gdb_byte *info_ptr; |
5307 | ||
5308 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); | |
5309 | info_ptr = dwarf2_per_objfile->info.buffer; | |
ae038cb0 DJ |
5310 | |
5311 | n_comp_units = 0; | |
5312 | n_allocated = 10; | |
5313 | all_comp_units = xmalloc (n_allocated | |
5314 | * sizeof (struct dwarf2_per_cu_data *)); | |
6e70227d | 5315 | |
3e43a32a MS |
5316 | while (info_ptr < dwarf2_per_objfile->info.buffer |
5317 | + dwarf2_per_objfile->info.size) | |
ae038cb0 | 5318 | { |
c764a876 | 5319 | unsigned int length, initial_length_size; |
ae038cb0 | 5320 | struct dwarf2_per_cu_data *this_cu; |
b64f50a1 | 5321 | sect_offset offset; |
ae038cb0 | 5322 | |
b64f50a1 | 5323 | offset.sect_off = info_ptr - dwarf2_per_objfile->info.buffer; |
ae038cb0 DJ |
5324 | |
5325 | /* Read just enough information to find out where the next | |
5326 | compilation unit is. */ | |
c764a876 DE |
5327 | length = read_initial_length (objfile->obfd, info_ptr, |
5328 | &initial_length_size); | |
ae038cb0 DJ |
5329 | |
5330 | /* Save the compilation unit for later lookup. */ | |
5331 | this_cu = obstack_alloc (&objfile->objfile_obstack, | |
5332 | sizeof (struct dwarf2_per_cu_data)); | |
5333 | memset (this_cu, 0, sizeof (*this_cu)); | |
5334 | this_cu->offset = offset; | |
c764a876 | 5335 | this_cu->length = length + initial_length_size; |
9291a0cd | 5336 | this_cu->objfile = objfile; |
3019eac3 | 5337 | this_cu->info_or_types_section = &dwarf2_per_objfile->info; |
ae038cb0 DJ |
5338 | |
5339 | if (n_comp_units == n_allocated) | |
5340 | { | |
5341 | n_allocated *= 2; | |
5342 | all_comp_units = xrealloc (all_comp_units, | |
5343 | n_allocated | |
5344 | * sizeof (struct dwarf2_per_cu_data *)); | |
5345 | } | |
5346 | all_comp_units[n_comp_units++] = this_cu; | |
5347 | ||
5348 | info_ptr = info_ptr + this_cu->length; | |
5349 | } | |
5350 | ||
5351 | dwarf2_per_objfile->all_comp_units | |
5352 | = obstack_alloc (&objfile->objfile_obstack, | |
5353 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
5354 | memcpy (dwarf2_per_objfile->all_comp_units, all_comp_units, | |
5355 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
5356 | xfree (all_comp_units); | |
5357 | dwarf2_per_objfile->n_comp_units = n_comp_units; | |
c906108c SS |
5358 | } |
5359 | ||
5734ee8b DJ |
5360 | /* Process all loaded DIEs for compilation unit CU, starting at |
5361 | FIRST_DIE. The caller should pass NEED_PC == 1 if the compilation | |
5362 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or | |
5363 | DW_AT_ranges). If NEED_PC is set, then this function will set | |
5364 | *LOWPC and *HIGHPC to the lowest and highest PC values found in CU | |
5365 | and record the covered ranges in the addrmap. */ | |
c906108c | 5366 | |
72bf9492 DJ |
5367 | static void |
5368 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
5734ee8b | 5369 | CORE_ADDR *highpc, int need_pc, struct dwarf2_cu *cu) |
c906108c | 5370 | { |
72bf9492 | 5371 | struct partial_die_info *pdi; |
c906108c | 5372 | |
91c24f0a DC |
5373 | /* Now, march along the PDI's, descending into ones which have |
5374 | interesting children but skipping the children of the other ones, | |
5375 | until we reach the end of the compilation unit. */ | |
c906108c | 5376 | |
72bf9492 | 5377 | pdi = first_die; |
91c24f0a | 5378 | |
72bf9492 DJ |
5379 | while (pdi != NULL) |
5380 | { | |
5381 | fixup_partial_die (pdi, cu); | |
c906108c | 5382 | |
f55ee35c | 5383 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
5384 | children, so we need to look at them. Ditto for anonymous |
5385 | enums. */ | |
933c6fe4 | 5386 | |
72bf9492 | 5387 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
95554aad TT |
5388 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
5389 | || pdi->tag == DW_TAG_imported_unit) | |
c906108c | 5390 | { |
72bf9492 | 5391 | switch (pdi->tag) |
c906108c SS |
5392 | { |
5393 | case DW_TAG_subprogram: | |
5734ee8b | 5394 | add_partial_subprogram (pdi, lowpc, highpc, need_pc, cu); |
c906108c | 5395 | break; |
72929c62 | 5396 | case DW_TAG_constant: |
c906108c SS |
5397 | case DW_TAG_variable: |
5398 | case DW_TAG_typedef: | |
91c24f0a | 5399 | case DW_TAG_union_type: |
72bf9492 | 5400 | if (!pdi->is_declaration) |
63d06c5c | 5401 | { |
72bf9492 | 5402 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
5403 | } |
5404 | break; | |
c906108c | 5405 | case DW_TAG_class_type: |
680b30c7 | 5406 | case DW_TAG_interface_type: |
c906108c | 5407 | case DW_TAG_structure_type: |
72bf9492 | 5408 | if (!pdi->is_declaration) |
c906108c | 5409 | { |
72bf9492 | 5410 | add_partial_symbol (pdi, cu); |
c906108c SS |
5411 | } |
5412 | break; | |
91c24f0a | 5413 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
5414 | if (!pdi->is_declaration) |
5415 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
5416 | break; |
5417 | case DW_TAG_base_type: | |
a02abb62 | 5418 | case DW_TAG_subrange_type: |
c906108c | 5419 | /* File scope base type definitions are added to the partial |
c5aa993b | 5420 | symbol table. */ |
72bf9492 | 5421 | add_partial_symbol (pdi, cu); |
c906108c | 5422 | break; |
d9fa45fe | 5423 | case DW_TAG_namespace: |
5734ee8b | 5424 | add_partial_namespace (pdi, lowpc, highpc, need_pc, cu); |
91c24f0a | 5425 | break; |
5d7cb8df JK |
5426 | case DW_TAG_module: |
5427 | add_partial_module (pdi, lowpc, highpc, need_pc, cu); | |
5428 | break; | |
95554aad TT |
5429 | case DW_TAG_imported_unit: |
5430 | { | |
5431 | struct dwarf2_per_cu_data *per_cu; | |
5432 | ||
f4dc4d17 DE |
5433 | /* For now we don't handle imported units in type units. */ |
5434 | if (cu->per_cu->is_debug_types) | |
5435 | { | |
5436 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
5437 | " supported in type units [in module %s]"), | |
5438 | cu->objfile->name); | |
5439 | } | |
5440 | ||
95554aad TT |
5441 | per_cu = dwarf2_find_containing_comp_unit (pdi->d.offset, |
5442 | cu->objfile); | |
5443 | ||
5444 | /* Go read the partial unit, if needed. */ | |
5445 | if (per_cu->v.psymtab == NULL) | |
5446 | process_psymtab_comp_unit (per_cu, 1); | |
5447 | ||
f4dc4d17 DE |
5448 | VEC_safe_push (dwarf2_per_cu_ptr, |
5449 | cu->per_cu->s.imported_symtabs, per_cu); | |
95554aad TT |
5450 | } |
5451 | break; | |
c906108c SS |
5452 | default: |
5453 | break; | |
5454 | } | |
5455 | } | |
5456 | ||
72bf9492 DJ |
5457 | /* If the die has a sibling, skip to the sibling. */ |
5458 | ||
5459 | pdi = pdi->die_sibling; | |
5460 | } | |
5461 | } | |
5462 | ||
5463 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 5464 | |
72bf9492 | 5465 | Normally, this is simple. For C++, the parent DIE's fully scoped |
987504bb JJ |
5466 | name is concatenated with "::" and the partial DIE's name. For |
5467 | Java, the same thing occurs except that "." is used instead of "::". | |
72bf9492 DJ |
5468 | Enumerators are an exception; they use the scope of their parent |
5469 | enumeration type, i.e. the name of the enumeration type is not | |
5470 | prepended to the enumerator. | |
91c24f0a | 5471 | |
72bf9492 DJ |
5472 | There are two complexities. One is DW_AT_specification; in this |
5473 | case "parent" means the parent of the target of the specification, | |
5474 | instead of the direct parent of the DIE. The other is compilers | |
5475 | which do not emit DW_TAG_namespace; in this case we try to guess | |
5476 | the fully qualified name of structure types from their members' | |
5477 | linkage names. This must be done using the DIE's children rather | |
5478 | than the children of any DW_AT_specification target. We only need | |
5479 | to do this for structures at the top level, i.e. if the target of | |
5480 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
5481 | have a parent. */ | |
5482 | ||
5483 | /* Compute the scope prefix associated with PDI's parent, in | |
5484 | compilation unit CU. The result will be allocated on CU's | |
5485 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
5486 | field. NULL is returned if no prefix is necessary. */ | |
5487 | static char * | |
5488 | partial_die_parent_scope (struct partial_die_info *pdi, | |
5489 | struct dwarf2_cu *cu) | |
5490 | { | |
5491 | char *grandparent_scope; | |
5492 | struct partial_die_info *parent, *real_pdi; | |
91c24f0a | 5493 | |
72bf9492 DJ |
5494 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
5495 | then this means the parent of the specification DIE. */ | |
5496 | ||
5497 | real_pdi = pdi; | |
72bf9492 | 5498 | while (real_pdi->has_specification) |
10b3939b | 5499 | real_pdi = find_partial_die (real_pdi->spec_offset, cu); |
72bf9492 DJ |
5500 | |
5501 | parent = real_pdi->die_parent; | |
5502 | if (parent == NULL) | |
5503 | return NULL; | |
5504 | ||
5505 | if (parent->scope_set) | |
5506 | return parent->scope; | |
5507 | ||
5508 | fixup_partial_die (parent, cu); | |
5509 | ||
10b3939b | 5510 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 5511 | |
acebe513 UW |
5512 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
5513 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
5514 | Work around this problem here. */ | |
5515 | if (cu->language == language_cplus | |
6e70227d | 5516 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
5517 | && strcmp (parent->name, "::") == 0 |
5518 | && grandparent_scope == NULL) | |
5519 | { | |
5520 | parent->scope = NULL; | |
5521 | parent->scope_set = 1; | |
5522 | return NULL; | |
5523 | } | |
5524 | ||
9c6c53f7 SA |
5525 | if (pdi->tag == DW_TAG_enumerator) |
5526 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
5527 | parent->scope = grandparent_scope; | |
5528 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 5529 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
5530 | || parent->tag == DW_TAG_structure_type |
5531 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 5532 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a TT |
5533 | || parent->tag == DW_TAG_union_type |
5534 | || parent->tag == DW_TAG_enumeration_type) | |
72bf9492 DJ |
5535 | { |
5536 | if (grandparent_scope == NULL) | |
5537 | parent->scope = parent->name; | |
5538 | else | |
3e43a32a MS |
5539 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
5540 | grandparent_scope, | |
f55ee35c | 5541 | parent->name, 0, cu); |
72bf9492 | 5542 | } |
72bf9492 DJ |
5543 | else |
5544 | { | |
5545 | /* FIXME drow/2004-04-01: What should we be doing with | |
5546 | function-local names? For partial symbols, we should probably be | |
5547 | ignoring them. */ | |
5548 | complaint (&symfile_complaints, | |
e2e0b3e5 | 5549 | _("unhandled containing DIE tag %d for DIE at %d"), |
b64f50a1 | 5550 | parent->tag, pdi->offset.sect_off); |
72bf9492 | 5551 | parent->scope = grandparent_scope; |
c906108c SS |
5552 | } |
5553 | ||
72bf9492 DJ |
5554 | parent->scope_set = 1; |
5555 | return parent->scope; | |
5556 | } | |
5557 | ||
5558 | /* Return the fully scoped name associated with PDI, from compilation unit | |
5559 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 5560 | |
72bf9492 DJ |
5561 | static char * |
5562 | partial_die_full_name (struct partial_die_info *pdi, | |
5563 | struct dwarf2_cu *cu) | |
5564 | { | |
5565 | char *parent_scope; | |
5566 | ||
98bfdba5 PA |
5567 | /* If this is a template instantiation, we can not work out the |
5568 | template arguments from partial DIEs. So, unfortunately, we have | |
5569 | to go through the full DIEs. At least any work we do building | |
5570 | types here will be reused if full symbols are loaded later. */ | |
5571 | if (pdi->has_template_arguments) | |
5572 | { | |
5573 | fixup_partial_die (pdi, cu); | |
5574 | ||
5575 | if (pdi->name != NULL && strchr (pdi->name, '<') == NULL) | |
5576 | { | |
5577 | struct die_info *die; | |
5578 | struct attribute attr; | |
5579 | struct dwarf2_cu *ref_cu = cu; | |
5580 | ||
b64f50a1 | 5581 | /* DW_FORM_ref_addr is using section offset. */ |
98bfdba5 PA |
5582 | attr.name = 0; |
5583 | attr.form = DW_FORM_ref_addr; | |
4568ecf9 | 5584 | attr.u.unsnd = pdi->offset.sect_off; |
98bfdba5 PA |
5585 | die = follow_die_ref (NULL, &attr, &ref_cu); |
5586 | ||
5587 | return xstrdup (dwarf2_full_name (NULL, die, ref_cu)); | |
5588 | } | |
5589 | } | |
5590 | ||
72bf9492 DJ |
5591 | parent_scope = partial_die_parent_scope (pdi, cu); |
5592 | if (parent_scope == NULL) | |
5593 | return NULL; | |
5594 | else | |
f55ee35c | 5595 | return typename_concat (NULL, parent_scope, pdi->name, 0, cu); |
c906108c SS |
5596 | } |
5597 | ||
5598 | static void | |
72bf9492 | 5599 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 5600 | { |
e7c27a73 | 5601 | struct objfile *objfile = cu->objfile; |
c906108c | 5602 | CORE_ADDR addr = 0; |
decbce07 | 5603 | char *actual_name = NULL; |
e142c38c | 5604 | CORE_ADDR baseaddr; |
72bf9492 | 5605 | int built_actual_name = 0; |
e142c38c DJ |
5606 | |
5607 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 5608 | |
94af9270 KS |
5609 | actual_name = partial_die_full_name (pdi, cu); |
5610 | if (actual_name) | |
5611 | built_actual_name = 1; | |
63d06c5c | 5612 | |
72bf9492 DJ |
5613 | if (actual_name == NULL) |
5614 | actual_name = pdi->name; | |
5615 | ||
c906108c SS |
5616 | switch (pdi->tag) |
5617 | { | |
5618 | case DW_TAG_subprogram: | |
2cfa0c8d | 5619 | if (pdi->is_external || cu->language == language_ada) |
c906108c | 5620 | { |
2cfa0c8d JB |
5621 | /* brobecker/2007-12-26: Normally, only "external" DIEs are part |
5622 | of the global scope. But in Ada, we want to be able to access | |
5623 | nested procedures globally. So all Ada subprograms are stored | |
5624 | in the global scope. */ | |
f47fb265 | 5625 | /* prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 5626 | mst_text, objfile); */ |
f47fb265 MS |
5627 | add_psymbol_to_list (actual_name, strlen (actual_name), |
5628 | built_actual_name, | |
5629 | VAR_DOMAIN, LOC_BLOCK, | |
5630 | &objfile->global_psymbols, | |
5631 | 0, pdi->lowpc + baseaddr, | |
5632 | cu->language, objfile); | |
c906108c SS |
5633 | } |
5634 | else | |
5635 | { | |
f47fb265 | 5636 | /* prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 5637 | mst_file_text, objfile); */ |
f47fb265 MS |
5638 | add_psymbol_to_list (actual_name, strlen (actual_name), |
5639 | built_actual_name, | |
5640 | VAR_DOMAIN, LOC_BLOCK, | |
5641 | &objfile->static_psymbols, | |
5642 | 0, pdi->lowpc + baseaddr, | |
5643 | cu->language, objfile); | |
c906108c SS |
5644 | } |
5645 | break; | |
72929c62 JB |
5646 | case DW_TAG_constant: |
5647 | { | |
5648 | struct psymbol_allocation_list *list; | |
5649 | ||
5650 | if (pdi->is_external) | |
5651 | list = &objfile->global_psymbols; | |
5652 | else | |
5653 | list = &objfile->static_psymbols; | |
f47fb265 MS |
5654 | add_psymbol_to_list (actual_name, strlen (actual_name), |
5655 | built_actual_name, VAR_DOMAIN, LOC_STATIC, | |
5656 | list, 0, 0, cu->language, objfile); | |
72929c62 JB |
5657 | } |
5658 | break; | |
c906108c | 5659 | case DW_TAG_variable: |
95554aad TT |
5660 | if (pdi->d.locdesc) |
5661 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 5662 | |
95554aad | 5663 | if (pdi->d.locdesc |
caac4577 JG |
5664 | && addr == 0 |
5665 | && !dwarf2_per_objfile->has_section_at_zero) | |
5666 | { | |
5667 | /* A global or static variable may also have been stripped | |
5668 | out by the linker if unused, in which case its address | |
5669 | will be nullified; do not add such variables into partial | |
5670 | symbol table then. */ | |
5671 | } | |
5672 | else if (pdi->is_external) | |
c906108c SS |
5673 | { |
5674 | /* Global Variable. | |
5675 | Don't enter into the minimal symbol tables as there is | |
5676 | a minimal symbol table entry from the ELF symbols already. | |
5677 | Enter into partial symbol table if it has a location | |
5678 | descriptor or a type. | |
5679 | If the location descriptor is missing, new_symbol will create | |
5680 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
5681 | be determined from the minimal symbol table whenever the variable | |
5682 | is referenced. | |
5683 | The address for the partial symbol table entry is not | |
5684 | used by GDB, but it comes in handy for debugging partial symbol | |
5685 | table building. */ | |
5686 | ||
95554aad | 5687 | if (pdi->d.locdesc || pdi->has_type) |
f47fb265 MS |
5688 | add_psymbol_to_list (actual_name, strlen (actual_name), |
5689 | built_actual_name, | |
5690 | VAR_DOMAIN, LOC_STATIC, | |
5691 | &objfile->global_psymbols, | |
5692 | 0, addr + baseaddr, | |
5693 | cu->language, objfile); | |
c906108c SS |
5694 | } |
5695 | else | |
5696 | { | |
0963b4bd | 5697 | /* Static Variable. Skip symbols without location descriptors. */ |
95554aad | 5698 | if (pdi->d.locdesc == NULL) |
decbce07 MS |
5699 | { |
5700 | if (built_actual_name) | |
5701 | xfree (actual_name); | |
5702 | return; | |
5703 | } | |
f47fb265 | 5704 | /* prim_record_minimal_symbol (actual_name, addr + baseaddr, |
c5aa993b | 5705 | mst_file_data, objfile); */ |
f47fb265 MS |
5706 | add_psymbol_to_list (actual_name, strlen (actual_name), |
5707 | built_actual_name, | |
5708 | VAR_DOMAIN, LOC_STATIC, | |
5709 | &objfile->static_psymbols, | |
5710 | 0, addr + baseaddr, | |
5711 | cu->language, objfile); | |
c906108c SS |
5712 | } |
5713 | break; | |
5714 | case DW_TAG_typedef: | |
5715 | case DW_TAG_base_type: | |
a02abb62 | 5716 | case DW_TAG_subrange_type: |
38d518c9 | 5717 | add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 5718 | built_actual_name, |
176620f1 | 5719 | VAR_DOMAIN, LOC_TYPEDEF, |
c906108c | 5720 | &objfile->static_psymbols, |
e142c38c | 5721 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 5722 | break; |
72bf9492 DJ |
5723 | case DW_TAG_namespace: |
5724 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
04a679b8 | 5725 | built_actual_name, |
72bf9492 DJ |
5726 | VAR_DOMAIN, LOC_TYPEDEF, |
5727 | &objfile->global_psymbols, | |
5728 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
5729 | break; | |
c906108c | 5730 | case DW_TAG_class_type: |
680b30c7 | 5731 | case DW_TAG_interface_type: |
c906108c SS |
5732 | case DW_TAG_structure_type: |
5733 | case DW_TAG_union_type: | |
5734 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
5735 | /* Skip external references. The DWARF standard says in the section |
5736 | about "Structure, Union, and Class Type Entries": "An incomplete | |
5737 | structure, union or class type is represented by a structure, | |
5738 | union or class entry that does not have a byte size attribute | |
5739 | and that has a DW_AT_declaration attribute." */ | |
5740 | if (!pdi->has_byte_size && pdi->is_declaration) | |
decbce07 MS |
5741 | { |
5742 | if (built_actual_name) | |
5743 | xfree (actual_name); | |
5744 | return; | |
5745 | } | |
fa4028e9 | 5746 | |
63d06c5c DC |
5747 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
5748 | static vs. global. */ | |
38d518c9 | 5749 | add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 5750 | built_actual_name, |
176620f1 | 5751 | STRUCT_DOMAIN, LOC_TYPEDEF, |
987504bb JJ |
5752 | (cu->language == language_cplus |
5753 | || cu->language == language_java) | |
63d06c5c DC |
5754 | ? &objfile->global_psymbols |
5755 | : &objfile->static_psymbols, | |
e142c38c | 5756 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 5757 | |
c906108c SS |
5758 | break; |
5759 | case DW_TAG_enumerator: | |
38d518c9 | 5760 | add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 5761 | built_actual_name, |
176620f1 | 5762 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
5763 | (cu->language == language_cplus |
5764 | || cu->language == language_java) | |
f6fe98ef DJ |
5765 | ? &objfile->global_psymbols |
5766 | : &objfile->static_psymbols, | |
e142c38c | 5767 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
5768 | break; |
5769 | default: | |
5770 | break; | |
5771 | } | |
5c4e30ca | 5772 | |
72bf9492 DJ |
5773 | if (built_actual_name) |
5774 | xfree (actual_name); | |
c906108c SS |
5775 | } |
5776 | ||
5c4e30ca DC |
5777 | /* Read a partial die corresponding to a namespace; also, add a symbol |
5778 | corresponding to that namespace to the symbol table. NAMESPACE is | |
5779 | the name of the enclosing namespace. */ | |
91c24f0a | 5780 | |
72bf9492 DJ |
5781 | static void |
5782 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 5783 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
5734ee8b | 5784 | int need_pc, struct dwarf2_cu *cu) |
91c24f0a | 5785 | { |
72bf9492 | 5786 | /* Add a symbol for the namespace. */ |
e7c27a73 | 5787 | |
72bf9492 | 5788 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
5789 | |
5790 | /* Now scan partial symbols in that namespace. */ | |
5791 | ||
91c24f0a | 5792 | if (pdi->has_children) |
5734ee8b | 5793 | scan_partial_symbols (pdi->die_child, lowpc, highpc, need_pc, cu); |
91c24f0a DC |
5794 | } |
5795 | ||
5d7cb8df JK |
5796 | /* Read a partial die corresponding to a Fortran module. */ |
5797 | ||
5798 | static void | |
5799 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
5800 | CORE_ADDR *highpc, int need_pc, struct dwarf2_cu *cu) | |
5801 | { | |
f55ee35c | 5802 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
5803 | |
5804 | if (pdi->has_children) | |
5805 | scan_partial_symbols (pdi->die_child, lowpc, highpc, need_pc, cu); | |
5806 | } | |
5807 | ||
bc30ff58 JB |
5808 | /* Read a partial die corresponding to a subprogram and create a partial |
5809 | symbol for that subprogram. When the CU language allows it, this | |
5810 | routine also defines a partial symbol for each nested subprogram | |
5811 | that this subprogram contains. | |
6e70227d | 5812 | |
bc30ff58 JB |
5813 | DIE my also be a lexical block, in which case we simply search |
5814 | recursively for suprograms defined inside that lexical block. | |
5815 | Again, this is only performed when the CU language allows this | |
5816 | type of definitions. */ | |
5817 | ||
5818 | static void | |
5819 | add_partial_subprogram (struct partial_die_info *pdi, | |
5820 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 5821 | int need_pc, struct dwarf2_cu *cu) |
bc30ff58 JB |
5822 | { |
5823 | if (pdi->tag == DW_TAG_subprogram) | |
5824 | { | |
5825 | if (pdi->has_pc_info) | |
5826 | { | |
5827 | if (pdi->lowpc < *lowpc) | |
5828 | *lowpc = pdi->lowpc; | |
5829 | if (pdi->highpc > *highpc) | |
5830 | *highpc = pdi->highpc; | |
5734ee8b DJ |
5831 | if (need_pc) |
5832 | { | |
5833 | CORE_ADDR baseaddr; | |
5834 | struct objfile *objfile = cu->objfile; | |
5835 | ||
5836 | baseaddr = ANOFFSET (objfile->section_offsets, | |
5837 | SECT_OFF_TEXT (objfile)); | |
5838 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
01637564 DE |
5839 | pdi->lowpc + baseaddr, |
5840 | pdi->highpc - 1 + baseaddr, | |
9291a0cd | 5841 | cu->per_cu->v.psymtab); |
5734ee8b | 5842 | } |
481860b3 GB |
5843 | } |
5844 | ||
5845 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
5846 | { | |
bc30ff58 | 5847 | if (!pdi->is_declaration) |
e8d05480 JB |
5848 | /* Ignore subprogram DIEs that do not have a name, they are |
5849 | illegal. Do not emit a complaint at this point, we will | |
5850 | do so when we convert this psymtab into a symtab. */ | |
5851 | if (pdi->name) | |
5852 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
5853 | } |
5854 | } | |
6e70227d | 5855 | |
bc30ff58 JB |
5856 | if (! pdi->has_children) |
5857 | return; | |
5858 | ||
5859 | if (cu->language == language_ada) | |
5860 | { | |
5861 | pdi = pdi->die_child; | |
5862 | while (pdi != NULL) | |
5863 | { | |
5864 | fixup_partial_die (pdi, cu); | |
5865 | if (pdi->tag == DW_TAG_subprogram | |
5866 | || pdi->tag == DW_TAG_lexical_block) | |
5734ee8b | 5867 | add_partial_subprogram (pdi, lowpc, highpc, need_pc, cu); |
bc30ff58 JB |
5868 | pdi = pdi->die_sibling; |
5869 | } | |
5870 | } | |
5871 | } | |
5872 | ||
91c24f0a DC |
5873 | /* Read a partial die corresponding to an enumeration type. */ |
5874 | ||
72bf9492 DJ |
5875 | static void |
5876 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
5877 | struct dwarf2_cu *cu) | |
91c24f0a | 5878 | { |
72bf9492 | 5879 | struct partial_die_info *pdi; |
91c24f0a DC |
5880 | |
5881 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
5882 | add_partial_symbol (enum_pdi, cu); |
5883 | ||
5884 | pdi = enum_pdi->die_child; | |
5885 | while (pdi) | |
91c24f0a | 5886 | { |
72bf9492 | 5887 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
e2e0b3e5 | 5888 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
91c24f0a | 5889 | else |
72bf9492 DJ |
5890 | add_partial_symbol (pdi, cu); |
5891 | pdi = pdi->die_sibling; | |
91c24f0a | 5892 | } |
91c24f0a DC |
5893 | } |
5894 | ||
6caca83c CC |
5895 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
5896 | ||
5897 | static unsigned int | |
5898 | peek_abbrev_code (bfd *abfd, gdb_byte *info_ptr) | |
5899 | { | |
5900 | unsigned int bytes_read; | |
5901 | ||
5902 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
5903 | } | |
5904 | ||
4bb7a0a7 DJ |
5905 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit CU. |
5906 | Return the corresponding abbrev, or NULL if the number is zero (indicating | |
5907 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
5908 | the initial number. */ | |
5909 | ||
5910 | static struct abbrev_info * | |
fe1b8b76 | 5911 | peek_die_abbrev (gdb_byte *info_ptr, unsigned int *bytes_read, |
891d2f0b | 5912 | struct dwarf2_cu *cu) |
4bb7a0a7 DJ |
5913 | { |
5914 | bfd *abfd = cu->objfile->obfd; | |
5915 | unsigned int abbrev_number; | |
5916 | struct abbrev_info *abbrev; | |
5917 | ||
5918 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
5919 | ||
5920 | if (abbrev_number == 0) | |
5921 | return NULL; | |
5922 | ||
433df2d4 | 5923 | abbrev = abbrev_table_lookup_abbrev (cu->abbrev_table, abbrev_number); |
4bb7a0a7 DJ |
5924 | if (!abbrev) |
5925 | { | |
3e43a32a MS |
5926 | error (_("Dwarf Error: Could not find abbrev number %d [in module %s]"), |
5927 | abbrev_number, bfd_get_filename (abfd)); | |
4bb7a0a7 DJ |
5928 | } |
5929 | ||
5930 | return abbrev; | |
5931 | } | |
5932 | ||
93311388 DE |
5933 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
5934 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
5935 | DIE. Any children of the skipped DIEs will also be skipped. */ |
5936 | ||
fe1b8b76 | 5937 | static gdb_byte * |
dee91e82 | 5938 | skip_children (const struct die_reader_specs *reader, gdb_byte *info_ptr) |
4bb7a0a7 | 5939 | { |
dee91e82 | 5940 | struct dwarf2_cu *cu = reader->cu; |
4bb7a0a7 DJ |
5941 | struct abbrev_info *abbrev; |
5942 | unsigned int bytes_read; | |
5943 | ||
5944 | while (1) | |
5945 | { | |
5946 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
5947 | if (abbrev == NULL) | |
5948 | return info_ptr + bytes_read; | |
5949 | else | |
dee91e82 | 5950 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
5951 | } |
5952 | } | |
5953 | ||
93311388 DE |
5954 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
5955 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
5956 | abbrev corresponding to that skipped uleb128 should be passed in |
5957 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
5958 | children. */ | |
5959 | ||
fe1b8b76 | 5960 | static gdb_byte * |
dee91e82 DE |
5961 | skip_one_die (const struct die_reader_specs *reader, gdb_byte *info_ptr, |
5962 | struct abbrev_info *abbrev) | |
4bb7a0a7 DJ |
5963 | { |
5964 | unsigned int bytes_read; | |
5965 | struct attribute attr; | |
dee91e82 DE |
5966 | bfd *abfd = reader->abfd; |
5967 | struct dwarf2_cu *cu = reader->cu; | |
5968 | gdb_byte *buffer = reader->buffer; | |
f664829e DE |
5969 | const gdb_byte *buffer_end = reader->buffer_end; |
5970 | gdb_byte *start_info_ptr = info_ptr; | |
4bb7a0a7 DJ |
5971 | unsigned int form, i; |
5972 | ||
5973 | for (i = 0; i < abbrev->num_attrs; i++) | |
5974 | { | |
5975 | /* The only abbrev we care about is DW_AT_sibling. */ | |
5976 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
5977 | { | |
dee91e82 | 5978 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
4bb7a0a7 | 5979 | if (attr.form == DW_FORM_ref_addr) |
3e43a32a MS |
5980 | complaint (&symfile_complaints, |
5981 | _("ignoring absolute DW_AT_sibling")); | |
4bb7a0a7 | 5982 | else |
b64f50a1 | 5983 | return buffer + dwarf2_get_ref_die_offset (&attr).sect_off; |
4bb7a0a7 DJ |
5984 | } |
5985 | ||
5986 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
5987 | form = abbrev->attrs[i].form; | |
5988 | skip_attribute: | |
5989 | switch (form) | |
5990 | { | |
4bb7a0a7 | 5991 | case DW_FORM_ref_addr: |
ae411497 TT |
5992 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
5993 | and later it is offset sized. */ | |
5994 | if (cu->header.version == 2) | |
5995 | info_ptr += cu->header.addr_size; | |
5996 | else | |
5997 | info_ptr += cu->header.offset_size; | |
5998 | break; | |
5999 | case DW_FORM_addr: | |
4bb7a0a7 DJ |
6000 | info_ptr += cu->header.addr_size; |
6001 | break; | |
6002 | case DW_FORM_data1: | |
6003 | case DW_FORM_ref1: | |
6004 | case DW_FORM_flag: | |
6005 | info_ptr += 1; | |
6006 | break; | |
2dc7f7b3 TT |
6007 | case DW_FORM_flag_present: |
6008 | break; | |
4bb7a0a7 DJ |
6009 | case DW_FORM_data2: |
6010 | case DW_FORM_ref2: | |
6011 | info_ptr += 2; | |
6012 | break; | |
6013 | case DW_FORM_data4: | |
6014 | case DW_FORM_ref4: | |
6015 | info_ptr += 4; | |
6016 | break; | |
6017 | case DW_FORM_data8: | |
6018 | case DW_FORM_ref8: | |
55f1336d | 6019 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
6020 | info_ptr += 8; |
6021 | break; | |
6022 | case DW_FORM_string: | |
9b1c24c8 | 6023 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
6024 | info_ptr += bytes_read; |
6025 | break; | |
2dc7f7b3 | 6026 | case DW_FORM_sec_offset: |
4bb7a0a7 DJ |
6027 | case DW_FORM_strp: |
6028 | info_ptr += cu->header.offset_size; | |
6029 | break; | |
2dc7f7b3 | 6030 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
6031 | case DW_FORM_block: |
6032 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
6033 | info_ptr += bytes_read; | |
6034 | break; | |
6035 | case DW_FORM_block1: | |
6036 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
6037 | break; | |
6038 | case DW_FORM_block2: | |
6039 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
6040 | break; | |
6041 | case DW_FORM_block4: | |
6042 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
6043 | break; | |
6044 | case DW_FORM_sdata: | |
6045 | case DW_FORM_udata: | |
6046 | case DW_FORM_ref_udata: | |
3019eac3 DE |
6047 | case DW_FORM_GNU_addr_index: |
6048 | case DW_FORM_GNU_str_index: | |
f664829e | 6049 | info_ptr = (gdb_byte *) safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
6050 | break; |
6051 | case DW_FORM_indirect: | |
6052 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
6053 | info_ptr += bytes_read; | |
6054 | /* We need to continue parsing from here, so just go back to | |
6055 | the top. */ | |
6056 | goto skip_attribute; | |
6057 | ||
6058 | default: | |
3e43a32a MS |
6059 | error (_("Dwarf Error: Cannot handle %s " |
6060 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
6061 | dwarf_form_name (form), |
6062 | bfd_get_filename (abfd)); | |
6063 | } | |
6064 | } | |
6065 | ||
6066 | if (abbrev->has_children) | |
dee91e82 | 6067 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
6068 | else |
6069 | return info_ptr; | |
6070 | } | |
6071 | ||
93311388 | 6072 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 6073 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 6074 | |
fe1b8b76 | 6075 | static gdb_byte * |
dee91e82 DE |
6076 | locate_pdi_sibling (const struct die_reader_specs *reader, |
6077 | struct partial_die_info *orig_pdi, | |
6078 | gdb_byte *info_ptr) | |
91c24f0a DC |
6079 | { |
6080 | /* Do we know the sibling already? */ | |
72bf9492 | 6081 | |
91c24f0a DC |
6082 | if (orig_pdi->sibling) |
6083 | return orig_pdi->sibling; | |
6084 | ||
6085 | /* Are there any children to deal with? */ | |
6086 | ||
6087 | if (!orig_pdi->has_children) | |
6088 | return info_ptr; | |
6089 | ||
4bb7a0a7 | 6090 | /* Skip the children the long way. */ |
91c24f0a | 6091 | |
dee91e82 | 6092 | return skip_children (reader, info_ptr); |
91c24f0a DC |
6093 | } |
6094 | ||
c906108c SS |
6095 | /* Expand this partial symbol table into a full symbol table. */ |
6096 | ||
6097 | static void | |
fba45db2 | 6098 | dwarf2_psymtab_to_symtab (struct partial_symtab *pst) |
c906108c | 6099 | { |
c906108c SS |
6100 | if (pst != NULL) |
6101 | { | |
6102 | if (pst->readin) | |
6103 | { | |
3e43a32a MS |
6104 | warning (_("bug: psymtab for %s is already read in."), |
6105 | pst->filename); | |
c906108c SS |
6106 | } |
6107 | else | |
6108 | { | |
6109 | if (info_verbose) | |
6110 | { | |
3e43a32a MS |
6111 | printf_filtered (_("Reading in symbols for %s..."), |
6112 | pst->filename); | |
c906108c SS |
6113 | gdb_flush (gdb_stdout); |
6114 | } | |
6115 | ||
10b3939b DJ |
6116 | /* Restore our global data. */ |
6117 | dwarf2_per_objfile = objfile_data (pst->objfile, | |
6118 | dwarf2_objfile_data_key); | |
6119 | ||
b2ab525c KB |
6120 | /* If this psymtab is constructed from a debug-only objfile, the |
6121 | has_section_at_zero flag will not necessarily be correct. We | |
6122 | can get the correct value for this flag by looking at the data | |
6123 | associated with the (presumably stripped) associated objfile. */ | |
6124 | if (pst->objfile->separate_debug_objfile_backlink) | |
6125 | { | |
6126 | struct dwarf2_per_objfile *dpo_backlink | |
6127 | = objfile_data (pst->objfile->separate_debug_objfile_backlink, | |
6128 | dwarf2_objfile_data_key); | |
9a619af0 | 6129 | |
b2ab525c KB |
6130 | dwarf2_per_objfile->has_section_at_zero |
6131 | = dpo_backlink->has_section_at_zero; | |
6132 | } | |
6133 | ||
98bfdba5 PA |
6134 | dwarf2_per_objfile->reading_partial_symbols = 0; |
6135 | ||
c906108c SS |
6136 | psymtab_to_symtab_1 (pst); |
6137 | ||
6138 | /* Finish up the debug error message. */ | |
6139 | if (info_verbose) | |
a3f17187 | 6140 | printf_filtered (_("done.\n")); |
c906108c SS |
6141 | } |
6142 | } | |
95554aad TT |
6143 | |
6144 | process_cu_includes (); | |
c906108c | 6145 | } |
9cdd5dbd DE |
6146 | \f |
6147 | /* Reading in full CUs. */ | |
c906108c | 6148 | |
10b3939b DJ |
6149 | /* Add PER_CU to the queue. */ |
6150 | ||
6151 | static void | |
95554aad TT |
6152 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
6153 | enum language pretend_language) | |
10b3939b DJ |
6154 | { |
6155 | struct dwarf2_queue_item *item; | |
6156 | ||
6157 | per_cu->queued = 1; | |
6158 | item = xmalloc (sizeof (*item)); | |
6159 | item->per_cu = per_cu; | |
95554aad | 6160 | item->pretend_language = pretend_language; |
10b3939b DJ |
6161 | item->next = NULL; |
6162 | ||
6163 | if (dwarf2_queue == NULL) | |
6164 | dwarf2_queue = item; | |
6165 | else | |
6166 | dwarf2_queue_tail->next = item; | |
6167 | ||
6168 | dwarf2_queue_tail = item; | |
6169 | } | |
6170 | ||
0907af0c DE |
6171 | /* THIS_CU has a reference to PER_CU. If necessary, load the new compilation |
6172 | unit and add it to our queue. | |
6173 | The result is non-zero if PER_CU was queued, otherwise the result is zero | |
6174 | meaning either PER_CU is already queued or it is already loaded. */ | |
6175 | ||
6176 | static int | |
6177 | maybe_queue_comp_unit (struct dwarf2_cu *this_cu, | |
6178 | struct dwarf2_per_cu_data *per_cu, | |
6179 | enum language pretend_language) | |
6180 | { | |
6181 | /* We may arrive here during partial symbol reading, if we need full | |
6182 | DIEs to process an unusual case (e.g. template arguments). Do | |
6183 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
6184 | if (dwarf2_per_objfile->reading_partial_symbols) | |
6185 | { | |
6186 | if (per_cu->cu == NULL || per_cu->cu->dies == NULL) | |
6187 | return 1; | |
6188 | return 0; | |
6189 | } | |
6190 | ||
6191 | /* Mark the dependence relation so that we don't flush PER_CU | |
6192 | too early. */ | |
6193 | dwarf2_add_dependence (this_cu, per_cu); | |
6194 | ||
6195 | /* If it's already on the queue, we have nothing to do. */ | |
6196 | if (per_cu->queued) | |
6197 | return 0; | |
6198 | ||
6199 | /* If the compilation unit is already loaded, just mark it as | |
6200 | used. */ | |
6201 | if (per_cu->cu != NULL) | |
6202 | { | |
6203 | per_cu->cu->last_used = 0; | |
6204 | return 0; | |
6205 | } | |
6206 | ||
6207 | /* Add it to the queue. */ | |
6208 | queue_comp_unit (per_cu, pretend_language); | |
6209 | ||
6210 | return 1; | |
6211 | } | |
6212 | ||
10b3939b DJ |
6213 | /* Process the queue. */ |
6214 | ||
6215 | static void | |
a0f42c21 | 6216 | process_queue (void) |
10b3939b DJ |
6217 | { |
6218 | struct dwarf2_queue_item *item, *next_item; | |
6219 | ||
45cfd468 DE |
6220 | if (dwarf2_read_debug) |
6221 | { | |
6222 | fprintf_unfiltered (gdb_stdlog, | |
6223 | "Expanding one or more symtabs of objfile %s ...\n", | |
6224 | dwarf2_per_objfile->objfile->name); | |
6225 | } | |
6226 | ||
03dd20cc DJ |
6227 | /* The queue starts out with one item, but following a DIE reference |
6228 | may load a new CU, adding it to the end of the queue. */ | |
10b3939b DJ |
6229 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) |
6230 | { | |
9291a0cd TT |
6231 | if (dwarf2_per_objfile->using_index |
6232 | ? !item->per_cu->v.quick->symtab | |
6233 | : (item->per_cu->v.psymtab && !item->per_cu->v.psymtab->readin)) | |
f4dc4d17 DE |
6234 | { |
6235 | struct dwarf2_per_cu_data *per_cu = item->per_cu; | |
6236 | ||
6237 | if (dwarf2_read_debug) | |
6238 | { | |
6239 | fprintf_unfiltered (gdb_stdlog, | |
6240 | "Expanding symtab of %s at offset 0x%x\n", | |
6241 | per_cu->is_debug_types ? "TU" : "CU", | |
6242 | per_cu->offset.sect_off); | |
6243 | } | |
6244 | ||
6245 | if (per_cu->is_debug_types) | |
6246 | process_full_type_unit (per_cu, item->pretend_language); | |
6247 | else | |
6248 | process_full_comp_unit (per_cu, item->pretend_language); | |
6249 | ||
6250 | if (dwarf2_read_debug) | |
6251 | { | |
6252 | fprintf_unfiltered (gdb_stdlog, | |
6253 | "Done expanding %s at offset 0x%x\n", | |
6254 | per_cu->is_debug_types ? "TU" : "CU", | |
6255 | per_cu->offset.sect_off); | |
6256 | } | |
6257 | } | |
10b3939b DJ |
6258 | |
6259 | item->per_cu->queued = 0; | |
6260 | next_item = item->next; | |
6261 | xfree (item); | |
6262 | } | |
6263 | ||
6264 | dwarf2_queue_tail = NULL; | |
45cfd468 DE |
6265 | |
6266 | if (dwarf2_read_debug) | |
6267 | { | |
6268 | fprintf_unfiltered (gdb_stdlog, "Done expanding symtabs of %s.\n", | |
6269 | dwarf2_per_objfile->objfile->name); | |
6270 | } | |
10b3939b DJ |
6271 | } |
6272 | ||
6273 | /* Free all allocated queue entries. This function only releases anything if | |
6274 | an error was thrown; if the queue was processed then it would have been | |
6275 | freed as we went along. */ | |
6276 | ||
6277 | static void | |
6278 | dwarf2_release_queue (void *dummy) | |
6279 | { | |
6280 | struct dwarf2_queue_item *item, *last; | |
6281 | ||
6282 | item = dwarf2_queue; | |
6283 | while (item) | |
6284 | { | |
6285 | /* Anything still marked queued is likely to be in an | |
6286 | inconsistent state, so discard it. */ | |
6287 | if (item->per_cu->queued) | |
6288 | { | |
6289 | if (item->per_cu->cu != NULL) | |
dee91e82 | 6290 | free_one_cached_comp_unit (item->per_cu); |
10b3939b DJ |
6291 | item->per_cu->queued = 0; |
6292 | } | |
6293 | ||
6294 | last = item; | |
6295 | item = item->next; | |
6296 | xfree (last); | |
6297 | } | |
6298 | ||
6299 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
6300 | } | |
6301 | ||
6302 | /* Read in full symbols for PST, and anything it depends on. */ | |
6303 | ||
c906108c | 6304 | static void |
fba45db2 | 6305 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c | 6306 | { |
10b3939b | 6307 | struct dwarf2_per_cu_data *per_cu; |
aaa75496 JB |
6308 | int i; |
6309 | ||
95554aad TT |
6310 | if (pst->readin) |
6311 | return; | |
6312 | ||
aaa75496 | 6313 | for (i = 0; i < pst->number_of_dependencies; i++) |
95554aad TT |
6314 | if (!pst->dependencies[i]->readin |
6315 | && pst->dependencies[i]->user == NULL) | |
aaa75496 JB |
6316 | { |
6317 | /* Inform about additional files that need to be read in. */ | |
6318 | if (info_verbose) | |
6319 | { | |
a3f17187 | 6320 | /* FIXME: i18n: Need to make this a single string. */ |
aaa75496 JB |
6321 | fputs_filtered (" ", gdb_stdout); |
6322 | wrap_here (""); | |
6323 | fputs_filtered ("and ", gdb_stdout); | |
6324 | wrap_here (""); | |
6325 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
0963b4bd | 6326 | wrap_here (""); /* Flush output. */ |
aaa75496 JB |
6327 | gdb_flush (gdb_stdout); |
6328 | } | |
6329 | psymtab_to_symtab_1 (pst->dependencies[i]); | |
6330 | } | |
6331 | ||
e38df1d0 | 6332 | per_cu = pst->read_symtab_private; |
10b3939b DJ |
6333 | |
6334 | if (per_cu == NULL) | |
aaa75496 JB |
6335 | { |
6336 | /* It's an include file, no symbols to read for it. | |
6337 | Everything is in the parent symtab. */ | |
6338 | pst->readin = 1; | |
6339 | return; | |
6340 | } | |
c906108c | 6341 | |
a0f42c21 | 6342 | dw2_do_instantiate_symtab (per_cu); |
10b3939b DJ |
6343 | } |
6344 | ||
dee91e82 DE |
6345 | /* Trivial hash function for die_info: the hash value of a DIE |
6346 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 6347 | |
dee91e82 DE |
6348 | static hashval_t |
6349 | die_hash (const void *item) | |
10b3939b | 6350 | { |
dee91e82 | 6351 | const struct die_info *die = item; |
6502dd73 | 6352 | |
dee91e82 DE |
6353 | return die->offset.sect_off; |
6354 | } | |
63d06c5c | 6355 | |
dee91e82 DE |
6356 | /* Trivial comparison function for die_info structures: two DIEs |
6357 | are equal if they have the same offset. */ | |
98bfdba5 | 6358 | |
dee91e82 DE |
6359 | static int |
6360 | die_eq (const void *item_lhs, const void *item_rhs) | |
6361 | { | |
6362 | const struct die_info *die_lhs = item_lhs; | |
6363 | const struct die_info *die_rhs = item_rhs; | |
c906108c | 6364 | |
dee91e82 DE |
6365 | return die_lhs->offset.sect_off == die_rhs->offset.sect_off; |
6366 | } | |
c906108c | 6367 | |
dee91e82 DE |
6368 | /* die_reader_func for load_full_comp_unit. |
6369 | This is identical to read_signatured_type_reader, | |
6370 | but is kept separate for now. */ | |
c906108c | 6371 | |
dee91e82 DE |
6372 | static void |
6373 | load_full_comp_unit_reader (const struct die_reader_specs *reader, | |
6374 | gdb_byte *info_ptr, | |
6375 | struct die_info *comp_unit_die, | |
6376 | int has_children, | |
6377 | void *data) | |
6378 | { | |
6379 | struct dwarf2_cu *cu = reader->cu; | |
95554aad | 6380 | enum language *language_ptr = data; |
6caca83c | 6381 | |
dee91e82 DE |
6382 | gdb_assert (cu->die_hash == NULL); |
6383 | cu->die_hash = | |
6384 | htab_create_alloc_ex (cu->header.length / 12, | |
6385 | die_hash, | |
6386 | die_eq, | |
6387 | NULL, | |
6388 | &cu->comp_unit_obstack, | |
6389 | hashtab_obstack_allocate, | |
6390 | dummy_obstack_deallocate); | |
e142c38c | 6391 | |
dee91e82 DE |
6392 | if (has_children) |
6393 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
6394 | &info_ptr, comp_unit_die); | |
6395 | cu->dies = comp_unit_die; | |
6396 | /* comp_unit_die is not stored in die_hash, no need. */ | |
10b3939b DJ |
6397 | |
6398 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 6399 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 6400 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
6401 | or we won't be able to build types correctly. |
6402 | Similarly, if we do not read the producer, we can not apply | |
6403 | producer-specific interpretation. */ | |
95554aad | 6404 | prepare_one_comp_unit (cu, cu->dies, *language_ptr); |
dee91e82 | 6405 | } |
10b3939b | 6406 | |
dee91e82 | 6407 | /* Load the DIEs associated with PER_CU into memory. */ |
a6c727b2 | 6408 | |
dee91e82 | 6409 | static void |
95554aad TT |
6410 | load_full_comp_unit (struct dwarf2_per_cu_data *this_cu, |
6411 | enum language pretend_language) | |
dee91e82 | 6412 | { |
3019eac3 | 6413 | gdb_assert (! this_cu->is_debug_types); |
c5b7e1cb | 6414 | |
f4dc4d17 DE |
6415 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, |
6416 | load_full_comp_unit_reader, &pretend_language); | |
10b3939b DJ |
6417 | } |
6418 | ||
3da10d80 KS |
6419 | /* Add a DIE to the delayed physname list. */ |
6420 | ||
6421 | static void | |
6422 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
6423 | const char *name, struct die_info *die, | |
6424 | struct dwarf2_cu *cu) | |
6425 | { | |
6426 | struct delayed_method_info mi; | |
6427 | mi.type = type; | |
6428 | mi.fnfield_index = fnfield_index; | |
6429 | mi.index = index; | |
6430 | mi.name = name; | |
6431 | mi.die = die; | |
6432 | VEC_safe_push (delayed_method_info, cu->method_list, &mi); | |
6433 | } | |
6434 | ||
6435 | /* A cleanup for freeing the delayed method list. */ | |
6436 | ||
6437 | static void | |
6438 | free_delayed_list (void *ptr) | |
6439 | { | |
6440 | struct dwarf2_cu *cu = (struct dwarf2_cu *) ptr; | |
6441 | if (cu->method_list != NULL) | |
6442 | { | |
6443 | VEC_free (delayed_method_info, cu->method_list); | |
6444 | cu->method_list = NULL; | |
6445 | } | |
6446 | } | |
6447 | ||
6448 | /* Compute the physnames of any methods on the CU's method list. | |
6449 | ||
6450 | The computation of method physnames is delayed in order to avoid the | |
6451 | (bad) condition that one of the method's formal parameters is of an as yet | |
6452 | incomplete type. */ | |
6453 | ||
6454 | static void | |
6455 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
6456 | { | |
6457 | int i; | |
6458 | struct delayed_method_info *mi; | |
6459 | for (i = 0; VEC_iterate (delayed_method_info, cu->method_list, i, mi) ; ++i) | |
6460 | { | |
1d06ead6 | 6461 | const char *physname; |
3da10d80 KS |
6462 | struct fn_fieldlist *fn_flp |
6463 | = &TYPE_FN_FIELDLIST (mi->type, mi->fnfield_index); | |
1d06ead6 | 6464 | physname = dwarf2_physname ((char *) mi->name, mi->die, cu); |
3da10d80 KS |
6465 | fn_flp->fn_fields[mi->index].physname = physname ? physname : ""; |
6466 | } | |
6467 | } | |
6468 | ||
a766d390 DE |
6469 | /* Go objects should be embedded in a DW_TAG_module DIE, |
6470 | and it's not clear if/how imported objects will appear. | |
6471 | To keep Go support simple until that's worked out, | |
6472 | go back through what we've read and create something usable. | |
6473 | We could do this while processing each DIE, and feels kinda cleaner, | |
6474 | but that way is more invasive. | |
6475 | This is to, for example, allow the user to type "p var" or "b main" | |
6476 | without having to specify the package name, and allow lookups | |
6477 | of module.object to work in contexts that use the expression | |
6478 | parser. */ | |
6479 | ||
6480 | static void | |
6481 | fixup_go_packaging (struct dwarf2_cu *cu) | |
6482 | { | |
6483 | char *package_name = NULL; | |
6484 | struct pending *list; | |
6485 | int i; | |
6486 | ||
6487 | for (list = global_symbols; list != NULL; list = list->next) | |
6488 | { | |
6489 | for (i = 0; i < list->nsyms; ++i) | |
6490 | { | |
6491 | struct symbol *sym = list->symbol[i]; | |
6492 | ||
6493 | if (SYMBOL_LANGUAGE (sym) == language_go | |
6494 | && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
6495 | { | |
6496 | char *this_package_name = go_symbol_package_name (sym); | |
6497 | ||
6498 | if (this_package_name == NULL) | |
6499 | continue; | |
6500 | if (package_name == NULL) | |
6501 | package_name = this_package_name; | |
6502 | else | |
6503 | { | |
6504 | if (strcmp (package_name, this_package_name) != 0) | |
6505 | complaint (&symfile_complaints, | |
6506 | _("Symtab %s has objects from two different Go packages: %s and %s"), | |
6507 | (sym->symtab && sym->symtab->filename | |
6508 | ? sym->symtab->filename | |
6509 | : cu->objfile->name), | |
6510 | this_package_name, package_name); | |
6511 | xfree (this_package_name); | |
6512 | } | |
6513 | } | |
6514 | } | |
6515 | } | |
6516 | ||
6517 | if (package_name != NULL) | |
6518 | { | |
6519 | struct objfile *objfile = cu->objfile; | |
6520 | struct type *type = init_type (TYPE_CODE_MODULE, 0, 0, | |
6521 | package_name, objfile); | |
6522 | struct symbol *sym; | |
6523 | ||
6524 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
6525 | ||
6526 | sym = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symbol); | |
6527 | SYMBOL_SET_LANGUAGE (sym, language_go); | |
6528 | SYMBOL_SET_NAMES (sym, package_name, strlen (package_name), 1, objfile); | |
6529 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, | |
6530 | e.g., "main" finds the "main" module and not C's main(). */ | |
6531 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
6532 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
6533 | SYMBOL_TYPE (sym) = type; | |
6534 | ||
6535 | add_symbol_to_list (sym, &global_symbols); | |
6536 | ||
6537 | xfree (package_name); | |
6538 | } | |
6539 | } | |
6540 | ||
95554aad TT |
6541 | static void compute_symtab_includes (struct dwarf2_per_cu_data *per_cu); |
6542 | ||
6543 | /* Return the symtab for PER_CU. This works properly regardless of | |
6544 | whether we're using the index or psymtabs. */ | |
6545 | ||
6546 | static struct symtab * | |
6547 | get_symtab (struct dwarf2_per_cu_data *per_cu) | |
6548 | { | |
6549 | return (dwarf2_per_objfile->using_index | |
6550 | ? per_cu->v.quick->symtab | |
6551 | : per_cu->v.psymtab->symtab); | |
6552 | } | |
6553 | ||
6554 | /* A helper function for computing the list of all symbol tables | |
6555 | included by PER_CU. */ | |
6556 | ||
6557 | static void | |
6558 | recursively_compute_inclusions (VEC (dwarf2_per_cu_ptr) **result, | |
6559 | htab_t all_children, | |
6560 | struct dwarf2_per_cu_data *per_cu) | |
6561 | { | |
6562 | void **slot; | |
6563 | int ix; | |
6564 | struct dwarf2_per_cu_data *iter; | |
6565 | ||
6566 | slot = htab_find_slot (all_children, per_cu, INSERT); | |
6567 | if (*slot != NULL) | |
6568 | { | |
6569 | /* This inclusion and its children have been processed. */ | |
6570 | return; | |
6571 | } | |
6572 | ||
6573 | *slot = per_cu; | |
6574 | /* Only add a CU if it has a symbol table. */ | |
6575 | if (get_symtab (per_cu) != NULL) | |
6576 | VEC_safe_push (dwarf2_per_cu_ptr, *result, per_cu); | |
6577 | ||
6578 | for (ix = 0; | |
f4dc4d17 | 6579 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->s.imported_symtabs, ix, iter); |
95554aad TT |
6580 | ++ix) |
6581 | recursively_compute_inclusions (result, all_children, iter); | |
6582 | } | |
6583 | ||
6584 | /* Compute the symtab 'includes' fields for the symtab related to | |
6585 | PER_CU. */ | |
6586 | ||
6587 | static void | |
6588 | compute_symtab_includes (struct dwarf2_per_cu_data *per_cu) | |
6589 | { | |
f4dc4d17 DE |
6590 | gdb_assert (! per_cu->is_debug_types); |
6591 | ||
6592 | if (!VEC_empty (dwarf2_per_cu_ptr, per_cu->s.imported_symtabs)) | |
95554aad TT |
6593 | { |
6594 | int ix, len; | |
6595 | struct dwarf2_per_cu_data *iter; | |
6596 | VEC (dwarf2_per_cu_ptr) *result_children = NULL; | |
6597 | htab_t all_children; | |
6598 | struct symtab *symtab = get_symtab (per_cu); | |
6599 | ||
6600 | /* If we don't have a symtab, we can just skip this case. */ | |
6601 | if (symtab == NULL) | |
6602 | return; | |
6603 | ||
6604 | all_children = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, | |
6605 | NULL, xcalloc, xfree); | |
6606 | ||
6607 | for (ix = 0; | |
f4dc4d17 | 6608 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->s.imported_symtabs, |
95554aad TT |
6609 | ix, iter); |
6610 | ++ix) | |
6611 | recursively_compute_inclusions (&result_children, all_children, iter); | |
6612 | ||
6613 | /* Now we have a transitive closure of all the included CUs, so | |
6614 | we can convert it to a list of symtabs. */ | |
6615 | len = VEC_length (dwarf2_per_cu_ptr, result_children); | |
6616 | symtab->includes | |
6617 | = obstack_alloc (&dwarf2_per_objfile->objfile->objfile_obstack, | |
6618 | (len + 1) * sizeof (struct symtab *)); | |
6619 | for (ix = 0; | |
6620 | VEC_iterate (dwarf2_per_cu_ptr, result_children, ix, iter); | |
6621 | ++ix) | |
6622 | symtab->includes[ix] = get_symtab (iter); | |
6623 | symtab->includes[len] = NULL; | |
6624 | ||
6625 | VEC_free (dwarf2_per_cu_ptr, result_children); | |
6626 | htab_delete (all_children); | |
6627 | } | |
6628 | } | |
6629 | ||
6630 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
6631 | read. */ | |
6632 | ||
6633 | static void | |
6634 | process_cu_includes (void) | |
6635 | { | |
6636 | int ix; | |
6637 | struct dwarf2_per_cu_data *iter; | |
6638 | ||
6639 | for (ix = 0; | |
6640 | VEC_iterate (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus, | |
6641 | ix, iter); | |
6642 | ++ix) | |
f4dc4d17 DE |
6643 | { |
6644 | if (! iter->is_debug_types) | |
6645 | compute_symtab_includes (iter); | |
6646 | } | |
95554aad TT |
6647 | |
6648 | VEC_free (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus); | |
6649 | } | |
6650 | ||
9cdd5dbd | 6651 | /* Generate full symbol information for PER_CU, whose DIEs have |
10b3939b DJ |
6652 | already been loaded into memory. */ |
6653 | ||
6654 | static void | |
95554aad TT |
6655 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu, |
6656 | enum language pretend_language) | |
10b3939b | 6657 | { |
10b3939b | 6658 | struct dwarf2_cu *cu = per_cu->cu; |
9291a0cd | 6659 | struct objfile *objfile = per_cu->objfile; |
10b3939b DJ |
6660 | CORE_ADDR lowpc, highpc; |
6661 | struct symtab *symtab; | |
3da10d80 | 6662 | struct cleanup *back_to, *delayed_list_cleanup; |
10b3939b | 6663 | CORE_ADDR baseaddr; |
4359dff1 | 6664 | struct block *static_block; |
10b3939b DJ |
6665 | |
6666 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
6667 | ||
10b3939b DJ |
6668 | buildsym_init (); |
6669 | back_to = make_cleanup (really_free_pendings, NULL); | |
3da10d80 | 6670 | delayed_list_cleanup = make_cleanup (free_delayed_list, cu); |
10b3939b DJ |
6671 | |
6672 | cu->list_in_scope = &file_symbols; | |
c906108c | 6673 | |
95554aad TT |
6674 | cu->language = pretend_language; |
6675 | cu->language_defn = language_def (cu->language); | |
6676 | ||
c906108c | 6677 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 6678 | process_die (cu->dies, cu); |
c906108c | 6679 | |
a766d390 DE |
6680 | /* For now fudge the Go package. */ |
6681 | if (cu->language == language_go) | |
6682 | fixup_go_packaging (cu); | |
6683 | ||
3da10d80 KS |
6684 | /* Now that we have processed all the DIEs in the CU, all the types |
6685 | should be complete, and it should now be safe to compute all of the | |
6686 | physnames. */ | |
6687 | compute_delayed_physnames (cu); | |
6688 | do_cleanups (delayed_list_cleanup); | |
6689 | ||
fae299cd DC |
6690 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
6691 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
6692 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 6693 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 6694 | |
4359dff1 JK |
6695 | static_block = end_symtab_get_static_block (highpc + baseaddr, objfile, 0); |
6696 | ||
6697 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
6698 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
6699 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
6700 | addrmap to help ensure it has an accurate map of pc values belonging to | |
6701 | this comp unit. */ | |
6702 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
6703 | ||
6704 | symtab = end_symtab_from_static_block (static_block, objfile, | |
6705 | SECT_OFF_TEXT (objfile), 0); | |
c906108c | 6706 | |
8be455d7 | 6707 | if (symtab != NULL) |
c906108c | 6708 | { |
df15bd07 | 6709 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 6710 | |
8be455d7 JK |
6711 | /* Set symtab language to language from DW_AT_language. If the |
6712 | compilation is from a C file generated by language preprocessors, do | |
6713 | not set the language if it was already deduced by start_subfile. */ | |
6714 | if (!(cu->language == language_c && symtab->language != language_c)) | |
6715 | symtab->language = cu->language; | |
6716 | ||
6717 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
6718 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
6719 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
6720 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
6721 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
6722 | |
6723 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
6724 | needed, it would be wrong due to missing DW_AT_producer there. | |
6725 | ||
6726 | Still one can confuse GDB by using non-standard GCC compilation | |
6727 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
6728 | */ | |
ab260dad | 6729 | if (cu->has_loclist && gcc_4_minor >= 5) |
8be455d7 | 6730 | symtab->locations_valid = 1; |
e0d00bc7 JK |
6731 | |
6732 | if (gcc_4_minor >= 5) | |
6733 | symtab->epilogue_unwind_valid = 1; | |
96408a79 SA |
6734 | |
6735 | symtab->call_site_htab = cu->call_site_htab; | |
c906108c | 6736 | } |
9291a0cd TT |
6737 | |
6738 | if (dwarf2_per_objfile->using_index) | |
6739 | per_cu->v.quick->symtab = symtab; | |
6740 | else | |
6741 | { | |
6742 | struct partial_symtab *pst = per_cu->v.psymtab; | |
6743 | pst->symtab = symtab; | |
6744 | pst->readin = 1; | |
6745 | } | |
c906108c | 6746 | |
95554aad TT |
6747 | /* Push it for inclusion processing later. */ |
6748 | VEC_safe_push (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus, per_cu); | |
6749 | ||
c906108c | 6750 | do_cleanups (back_to); |
f4dc4d17 | 6751 | } |
45cfd468 | 6752 | |
f4dc4d17 DE |
6753 | /* Generate full symbol information for type unit PER_CU, whose DIEs have |
6754 | already been loaded into memory. */ | |
6755 | ||
6756 | static void | |
6757 | process_full_type_unit (struct dwarf2_per_cu_data *per_cu, | |
6758 | enum language pretend_language) | |
6759 | { | |
6760 | struct dwarf2_cu *cu = per_cu->cu; | |
6761 | struct objfile *objfile = per_cu->objfile; | |
6762 | struct symtab *symtab; | |
6763 | struct cleanup *back_to, *delayed_list_cleanup; | |
6764 | ||
6765 | buildsym_init (); | |
6766 | back_to = make_cleanup (really_free_pendings, NULL); | |
6767 | delayed_list_cleanup = make_cleanup (free_delayed_list, cu); | |
6768 | ||
6769 | cu->list_in_scope = &file_symbols; | |
6770 | ||
6771 | cu->language = pretend_language; | |
6772 | cu->language_defn = language_def (cu->language); | |
6773 | ||
6774 | /* The symbol tables are set up in read_type_unit_scope. */ | |
6775 | process_die (cu->dies, cu); | |
6776 | ||
6777 | /* For now fudge the Go package. */ | |
6778 | if (cu->language == language_go) | |
6779 | fixup_go_packaging (cu); | |
6780 | ||
6781 | /* Now that we have processed all the DIEs in the CU, all the types | |
6782 | should be complete, and it should now be safe to compute all of the | |
6783 | physnames. */ | |
6784 | compute_delayed_physnames (cu); | |
6785 | do_cleanups (delayed_list_cleanup); | |
6786 | ||
6787 | /* TUs share symbol tables. | |
6788 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
6789 | of it with end_expandable_symtab. Otherwise, complete the addition of |
6790 | this TU's symbols to the existing symtab. */ | |
f4dc4d17 | 6791 | if (per_cu->s.type_unit_group->primary_symtab == NULL) |
45cfd468 | 6792 | { |
f4dc4d17 DE |
6793 | symtab = end_expandable_symtab (0, objfile, SECT_OFF_TEXT (objfile)); |
6794 | per_cu->s.type_unit_group->primary_symtab = symtab; | |
6795 | ||
6796 | if (symtab != NULL) | |
6797 | { | |
6798 | /* Set symtab language to language from DW_AT_language. If the | |
6799 | compilation is from a C file generated by language preprocessors, | |
6800 | do not set the language if it was already deduced by | |
6801 | start_subfile. */ | |
6802 | if (!(cu->language == language_c && symtab->language != language_c)) | |
6803 | symtab->language = cu->language; | |
6804 | } | |
6805 | } | |
6806 | else | |
6807 | { | |
6808 | augment_type_symtab (objfile, | |
6809 | per_cu->s.type_unit_group->primary_symtab); | |
6810 | symtab = per_cu->s.type_unit_group->primary_symtab; | |
6811 | } | |
6812 | ||
6813 | if (dwarf2_per_objfile->using_index) | |
6814 | per_cu->v.quick->symtab = symtab; | |
6815 | else | |
6816 | { | |
6817 | struct partial_symtab *pst = per_cu->v.psymtab; | |
6818 | pst->symtab = symtab; | |
6819 | pst->readin = 1; | |
45cfd468 | 6820 | } |
f4dc4d17 DE |
6821 | |
6822 | do_cleanups (back_to); | |
c906108c SS |
6823 | } |
6824 | ||
95554aad TT |
6825 | /* Process an imported unit DIE. */ |
6826 | ||
6827 | static void | |
6828 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
6829 | { | |
6830 | struct attribute *attr; | |
6831 | ||
f4dc4d17 DE |
6832 | /* For now we don't handle imported units in type units. */ |
6833 | if (cu->per_cu->is_debug_types) | |
6834 | { | |
6835 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
6836 | " supported in type units [in module %s]"), | |
6837 | cu->objfile->name); | |
6838 | } | |
6839 | ||
95554aad TT |
6840 | attr = dwarf2_attr (die, DW_AT_import, cu); |
6841 | if (attr != NULL) | |
6842 | { | |
6843 | struct dwarf2_per_cu_data *per_cu; | |
6844 | struct symtab *imported_symtab; | |
6845 | sect_offset offset; | |
6846 | ||
6847 | offset = dwarf2_get_ref_die_offset (attr); | |
6848 | per_cu = dwarf2_find_containing_comp_unit (offset, cu->objfile); | |
6849 | ||
6850 | /* Queue the unit, if needed. */ | |
6851 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) | |
6852 | load_full_comp_unit (per_cu, cu->language); | |
6853 | ||
f4dc4d17 | 6854 | VEC_safe_push (dwarf2_per_cu_ptr, cu->per_cu->s.imported_symtabs, |
95554aad TT |
6855 | per_cu); |
6856 | } | |
6857 | } | |
6858 | ||
c906108c SS |
6859 | /* Process a die and its children. */ |
6860 | ||
6861 | static void | |
e7c27a73 | 6862 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
6863 | { |
6864 | switch (die->tag) | |
6865 | { | |
6866 | case DW_TAG_padding: | |
6867 | break; | |
6868 | case DW_TAG_compile_unit: | |
95554aad | 6869 | case DW_TAG_partial_unit: |
e7c27a73 | 6870 | read_file_scope (die, cu); |
c906108c | 6871 | break; |
348e048f DE |
6872 | case DW_TAG_type_unit: |
6873 | read_type_unit_scope (die, cu); | |
6874 | break; | |
c906108c | 6875 | case DW_TAG_subprogram: |
c906108c | 6876 | case DW_TAG_inlined_subroutine: |
edb3359d | 6877 | read_func_scope (die, cu); |
c906108c SS |
6878 | break; |
6879 | case DW_TAG_lexical_block: | |
14898363 L |
6880 | case DW_TAG_try_block: |
6881 | case DW_TAG_catch_block: | |
e7c27a73 | 6882 | read_lexical_block_scope (die, cu); |
c906108c | 6883 | break; |
96408a79 SA |
6884 | case DW_TAG_GNU_call_site: |
6885 | read_call_site_scope (die, cu); | |
6886 | break; | |
c906108c | 6887 | case DW_TAG_class_type: |
680b30c7 | 6888 | case DW_TAG_interface_type: |
c906108c SS |
6889 | case DW_TAG_structure_type: |
6890 | case DW_TAG_union_type: | |
134d01f1 | 6891 | process_structure_scope (die, cu); |
c906108c SS |
6892 | break; |
6893 | case DW_TAG_enumeration_type: | |
134d01f1 | 6894 | process_enumeration_scope (die, cu); |
c906108c | 6895 | break; |
134d01f1 | 6896 | |
f792889a DJ |
6897 | /* These dies have a type, but processing them does not create |
6898 | a symbol or recurse to process the children. Therefore we can | |
6899 | read them on-demand through read_type_die. */ | |
c906108c | 6900 | case DW_TAG_subroutine_type: |
72019c9c | 6901 | case DW_TAG_set_type: |
c906108c | 6902 | case DW_TAG_array_type: |
c906108c | 6903 | case DW_TAG_pointer_type: |
c906108c | 6904 | case DW_TAG_ptr_to_member_type: |
c906108c | 6905 | case DW_TAG_reference_type: |
c906108c | 6906 | case DW_TAG_string_type: |
c906108c | 6907 | break; |
134d01f1 | 6908 | |
c906108c | 6909 | case DW_TAG_base_type: |
a02abb62 | 6910 | case DW_TAG_subrange_type: |
cb249c71 | 6911 | case DW_TAG_typedef: |
134d01f1 DJ |
6912 | /* Add a typedef symbol for the type definition, if it has a |
6913 | DW_AT_name. */ | |
f792889a | 6914 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 6915 | break; |
c906108c | 6916 | case DW_TAG_common_block: |
e7c27a73 | 6917 | read_common_block (die, cu); |
c906108c SS |
6918 | break; |
6919 | case DW_TAG_common_inclusion: | |
6920 | break; | |
d9fa45fe | 6921 | case DW_TAG_namespace: |
63d06c5c | 6922 | processing_has_namespace_info = 1; |
e7c27a73 | 6923 | read_namespace (die, cu); |
d9fa45fe | 6924 | break; |
5d7cb8df | 6925 | case DW_TAG_module: |
f55ee35c | 6926 | processing_has_namespace_info = 1; |
5d7cb8df JK |
6927 | read_module (die, cu); |
6928 | break; | |
d9fa45fe DC |
6929 | case DW_TAG_imported_declaration: |
6930 | case DW_TAG_imported_module: | |
63d06c5c | 6931 | processing_has_namespace_info = 1; |
27aa8d6a SW |
6932 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
6933 | || cu->language != language_fortran)) | |
6934 | complaint (&symfile_complaints, _("Tag '%s' has unexpected children"), | |
6935 | dwarf_tag_name (die->tag)); | |
6936 | read_import_statement (die, cu); | |
d9fa45fe | 6937 | break; |
95554aad TT |
6938 | |
6939 | case DW_TAG_imported_unit: | |
6940 | process_imported_unit_die (die, cu); | |
6941 | break; | |
6942 | ||
c906108c | 6943 | default: |
e7c27a73 | 6944 | new_symbol (die, NULL, cu); |
c906108c SS |
6945 | break; |
6946 | } | |
6947 | } | |
6948 | ||
94af9270 KS |
6949 | /* A helper function for dwarf2_compute_name which determines whether DIE |
6950 | needs to have the name of the scope prepended to the name listed in the | |
6951 | die. */ | |
6952 | ||
6953 | static int | |
6954 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
6955 | { | |
1c809c68 TT |
6956 | struct attribute *attr; |
6957 | ||
94af9270 KS |
6958 | switch (die->tag) |
6959 | { | |
6960 | case DW_TAG_namespace: | |
6961 | case DW_TAG_typedef: | |
6962 | case DW_TAG_class_type: | |
6963 | case DW_TAG_interface_type: | |
6964 | case DW_TAG_structure_type: | |
6965 | case DW_TAG_union_type: | |
6966 | case DW_TAG_enumeration_type: | |
6967 | case DW_TAG_enumerator: | |
6968 | case DW_TAG_subprogram: | |
6969 | case DW_TAG_member: | |
6970 | return 1; | |
6971 | ||
6972 | case DW_TAG_variable: | |
c2b0a229 | 6973 | case DW_TAG_constant: |
94af9270 KS |
6974 | /* We only need to prefix "globally" visible variables. These include |
6975 | any variable marked with DW_AT_external or any variable that | |
6976 | lives in a namespace. [Variables in anonymous namespaces | |
6977 | require prefixing, but they are not DW_AT_external.] */ | |
6978 | ||
6979 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
6980 | { | |
6981 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 6982 | |
94af9270 KS |
6983 | return die_needs_namespace (die_specification (die, &spec_cu), |
6984 | spec_cu); | |
6985 | } | |
6986 | ||
1c809c68 | 6987 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
6988 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
6989 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
6990 | return 0; |
6991 | /* A variable in a lexical block of some kind does not need a | |
6992 | namespace, even though in C++ such variables may be external | |
6993 | and have a mangled name. */ | |
6994 | if (die->parent->tag == DW_TAG_lexical_block | |
6995 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
6996 | || die->parent->tag == DW_TAG_catch_block |
6997 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
6998 | return 0; |
6999 | return 1; | |
94af9270 KS |
7000 | |
7001 | default: | |
7002 | return 0; | |
7003 | } | |
7004 | } | |
7005 | ||
98bfdba5 PA |
7006 | /* Retrieve the last character from a mem_file. */ |
7007 | ||
7008 | static void | |
7009 | do_ui_file_peek_last (void *object, const char *buffer, long length) | |
7010 | { | |
7011 | char *last_char_p = (char *) object; | |
7012 | ||
7013 | if (length > 0) | |
7014 | *last_char_p = buffer[length - 1]; | |
7015 | } | |
7016 | ||
94af9270 | 7017 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 DE |
7018 | compute the physname for the object, which include a method's: |
7019 | - formal parameters (C++/Java), | |
7020 | - receiver type (Go), | |
7021 | - return type (Java). | |
7022 | ||
7023 | The term "physname" is a bit confusing. | |
7024 | For C++, for example, it is the demangled name. | |
7025 | For Go, for example, it's the mangled name. | |
94af9270 | 7026 | |
af6b7be1 JB |
7027 | For Ada, return the DIE's linkage name rather than the fully qualified |
7028 | name. PHYSNAME is ignored.. | |
7029 | ||
94af9270 KS |
7030 | The result is allocated on the objfile_obstack and canonicalized. */ |
7031 | ||
7032 | static const char * | |
7033 | dwarf2_compute_name (char *name, struct die_info *die, struct dwarf2_cu *cu, | |
7034 | int physname) | |
7035 | { | |
bb5ed363 DE |
7036 | struct objfile *objfile = cu->objfile; |
7037 | ||
94af9270 KS |
7038 | if (name == NULL) |
7039 | name = dwarf2_name (die, cu); | |
7040 | ||
f55ee35c JK |
7041 | /* For Fortran GDB prefers DW_AT_*linkage_name if present but otherwise |
7042 | compute it by typename_concat inside GDB. */ | |
7043 | if (cu->language == language_ada | |
7044 | || (cu->language == language_fortran && physname)) | |
7045 | { | |
7046 | /* For Ada unit, we prefer the linkage name over the name, as | |
7047 | the former contains the exported name, which the user expects | |
7048 | to be able to reference. Ideally, we want the user to be able | |
7049 | to reference this entity using either natural or linkage name, | |
7050 | but we haven't started looking at this enhancement yet. */ | |
7051 | struct attribute *attr; | |
7052 | ||
7053 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
7054 | if (attr == NULL) | |
7055 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
7056 | if (attr && DW_STRING (attr)) | |
7057 | return DW_STRING (attr); | |
7058 | } | |
7059 | ||
94af9270 KS |
7060 | /* These are the only languages we know how to qualify names in. */ |
7061 | if (name != NULL | |
f55ee35c JK |
7062 | && (cu->language == language_cplus || cu->language == language_java |
7063 | || cu->language == language_fortran)) | |
94af9270 KS |
7064 | { |
7065 | if (die_needs_namespace (die, cu)) | |
7066 | { | |
7067 | long length; | |
0d5cff50 | 7068 | const char *prefix; |
94af9270 KS |
7069 | struct ui_file *buf; |
7070 | ||
7071 | prefix = determine_prefix (die, cu); | |
7072 | buf = mem_fileopen (); | |
7073 | if (*prefix != '\0') | |
7074 | { | |
f55ee35c JK |
7075 | char *prefixed_name = typename_concat (NULL, prefix, name, |
7076 | physname, cu); | |
9a619af0 | 7077 | |
94af9270 KS |
7078 | fputs_unfiltered (prefixed_name, buf); |
7079 | xfree (prefixed_name); | |
7080 | } | |
7081 | else | |
62d5b8da | 7082 | fputs_unfiltered (name, buf); |
94af9270 | 7083 | |
98bfdba5 PA |
7084 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
7085 | as children with DW_TAG_template_type_param or | |
7086 | DW_TAG_value_type_param. If the latter, add them to the name | |
7087 | here. If the name already has template parameters, then | |
7088 | skip this step; some versions of GCC emit both, and | |
7089 | it is more efficient to use the pre-computed name. | |
7090 | ||
7091 | Something to keep in mind about this process: it is very | |
7092 | unlikely, or in some cases downright impossible, to produce | |
7093 | something that will match the mangled name of a function. | |
7094 | If the definition of the function has the same debug info, | |
7095 | we should be able to match up with it anyway. But fallbacks | |
7096 | using the minimal symbol, for instance to find a method | |
7097 | implemented in a stripped copy of libstdc++, will not work. | |
7098 | If we do not have debug info for the definition, we will have to | |
7099 | match them up some other way. | |
7100 | ||
7101 | When we do name matching there is a related problem with function | |
7102 | templates; two instantiated function templates are allowed to | |
7103 | differ only by their return types, which we do not add here. */ | |
7104 | ||
7105 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
7106 | { | |
7107 | struct attribute *attr; | |
7108 | struct die_info *child; | |
7109 | int first = 1; | |
7110 | ||
7111 | die->building_fullname = 1; | |
7112 | ||
7113 | for (child = die->child; child != NULL; child = child->sibling) | |
7114 | { | |
7115 | struct type *type; | |
12df843f | 7116 | LONGEST value; |
98bfdba5 PA |
7117 | gdb_byte *bytes; |
7118 | struct dwarf2_locexpr_baton *baton; | |
7119 | struct value *v; | |
7120 | ||
7121 | if (child->tag != DW_TAG_template_type_param | |
7122 | && child->tag != DW_TAG_template_value_param) | |
7123 | continue; | |
7124 | ||
7125 | if (first) | |
7126 | { | |
7127 | fputs_unfiltered ("<", buf); | |
7128 | first = 0; | |
7129 | } | |
7130 | else | |
7131 | fputs_unfiltered (", ", buf); | |
7132 | ||
7133 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
7134 | if (attr == NULL) | |
7135 | { | |
7136 | complaint (&symfile_complaints, | |
7137 | _("template parameter missing DW_AT_type")); | |
7138 | fputs_unfiltered ("UNKNOWN_TYPE", buf); | |
7139 | continue; | |
7140 | } | |
7141 | type = die_type (child, cu); | |
7142 | ||
7143 | if (child->tag == DW_TAG_template_type_param) | |
7144 | { | |
7145 | c_print_type (type, "", buf, -1, 0); | |
7146 | continue; | |
7147 | } | |
7148 | ||
7149 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
7150 | if (attr == NULL) | |
7151 | { | |
7152 | complaint (&symfile_complaints, | |
3e43a32a MS |
7153 | _("template parameter missing " |
7154 | "DW_AT_const_value")); | |
98bfdba5 PA |
7155 | fputs_unfiltered ("UNKNOWN_VALUE", buf); |
7156 | continue; | |
7157 | } | |
7158 | ||
7159 | dwarf2_const_value_attr (attr, type, name, | |
7160 | &cu->comp_unit_obstack, cu, | |
7161 | &value, &bytes, &baton); | |
7162 | ||
7163 | if (TYPE_NOSIGN (type)) | |
7164 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
7165 | changed, this can use value_print instead. */ | |
7166 | c_printchar (value, type, buf); | |
7167 | else | |
7168 | { | |
7169 | struct value_print_options opts; | |
7170 | ||
7171 | if (baton != NULL) | |
7172 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
7173 | baton->data, | |
7174 | baton->size, | |
7175 | baton->per_cu); | |
7176 | else if (bytes != NULL) | |
7177 | { | |
7178 | v = allocate_value (type); | |
7179 | memcpy (value_contents_writeable (v), bytes, | |
7180 | TYPE_LENGTH (type)); | |
7181 | } | |
7182 | else | |
7183 | v = value_from_longest (type, value); | |
7184 | ||
3e43a32a MS |
7185 | /* Specify decimal so that we do not depend on |
7186 | the radix. */ | |
98bfdba5 PA |
7187 | get_formatted_print_options (&opts, 'd'); |
7188 | opts.raw = 1; | |
7189 | value_print (v, buf, &opts); | |
7190 | release_value (v); | |
7191 | value_free (v); | |
7192 | } | |
7193 | } | |
7194 | ||
7195 | die->building_fullname = 0; | |
7196 | ||
7197 | if (!first) | |
7198 | { | |
7199 | /* Close the argument list, with a space if necessary | |
7200 | (nested templates). */ | |
7201 | char last_char = '\0'; | |
7202 | ui_file_put (buf, do_ui_file_peek_last, &last_char); | |
7203 | if (last_char == '>') | |
7204 | fputs_unfiltered (" >", buf); | |
7205 | else | |
7206 | fputs_unfiltered (">", buf); | |
7207 | } | |
7208 | } | |
7209 | ||
94af9270 KS |
7210 | /* For Java and C++ methods, append formal parameter type |
7211 | information, if PHYSNAME. */ | |
6e70227d | 7212 | |
94af9270 KS |
7213 | if (physname && die->tag == DW_TAG_subprogram |
7214 | && (cu->language == language_cplus | |
7215 | || cu->language == language_java)) | |
7216 | { | |
7217 | struct type *type = read_type_die (die, cu); | |
7218 | ||
3167638f | 7219 | c_type_print_args (type, buf, 1, cu->language); |
94af9270 KS |
7220 | |
7221 | if (cu->language == language_java) | |
7222 | { | |
7223 | /* For java, we must append the return type to method | |
0963b4bd | 7224 | names. */ |
94af9270 KS |
7225 | if (die->tag == DW_TAG_subprogram) |
7226 | java_print_type (TYPE_TARGET_TYPE (type), "", buf, | |
7227 | 0, 0); | |
7228 | } | |
7229 | else if (cu->language == language_cplus) | |
7230 | { | |
60430eff DJ |
7231 | /* Assume that an artificial first parameter is |
7232 | "this", but do not crash if it is not. RealView | |
7233 | marks unnamed (and thus unused) parameters as | |
7234 | artificial; there is no way to differentiate | |
7235 | the two cases. */ | |
94af9270 KS |
7236 | if (TYPE_NFIELDS (type) > 0 |
7237 | && TYPE_FIELD_ARTIFICIAL (type, 0) | |
60430eff | 7238 | && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_PTR |
3e43a32a MS |
7239 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, |
7240 | 0)))) | |
94af9270 KS |
7241 | fputs_unfiltered (" const", buf); |
7242 | } | |
7243 | } | |
7244 | ||
bb5ed363 | 7245 | name = ui_file_obsavestring (buf, &objfile->objfile_obstack, |
94af9270 KS |
7246 | &length); |
7247 | ui_file_delete (buf); | |
7248 | ||
7249 | if (cu->language == language_cplus) | |
7250 | { | |
7251 | char *cname | |
7252 | = dwarf2_canonicalize_name (name, cu, | |
bb5ed363 | 7253 | &objfile->objfile_obstack); |
9a619af0 | 7254 | |
94af9270 KS |
7255 | if (cname != NULL) |
7256 | name = cname; | |
7257 | } | |
7258 | } | |
7259 | } | |
7260 | ||
7261 | return name; | |
7262 | } | |
7263 | ||
0114d602 DJ |
7264 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
7265 | If scope qualifiers are appropriate they will be added. The result | |
7266 | will be allocated on the objfile_obstack, or NULL if the DIE does | |
94af9270 KS |
7267 | not have a name. NAME may either be from a previous call to |
7268 | dwarf2_name or NULL. | |
7269 | ||
0963b4bd | 7270 | The output string will be canonicalized (if C++/Java). */ |
0114d602 DJ |
7271 | |
7272 | static const char * | |
94af9270 | 7273 | dwarf2_full_name (char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 7274 | { |
94af9270 KS |
7275 | return dwarf2_compute_name (name, die, cu, 0); |
7276 | } | |
0114d602 | 7277 | |
94af9270 KS |
7278 | /* Construct a physname for the given DIE in CU. NAME may either be |
7279 | from a previous call to dwarf2_name or NULL. The result will be | |
7280 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
7281 | name. | |
0114d602 | 7282 | |
94af9270 | 7283 | The output string will be canonicalized (if C++/Java). */ |
0114d602 | 7284 | |
94af9270 KS |
7285 | static const char * |
7286 | dwarf2_physname (char *name, struct die_info *die, struct dwarf2_cu *cu) | |
7287 | { | |
bb5ed363 | 7288 | struct objfile *objfile = cu->objfile; |
900e11f9 JK |
7289 | struct attribute *attr; |
7290 | const char *retval, *mangled = NULL, *canon = NULL; | |
7291 | struct cleanup *back_to; | |
7292 | int need_copy = 1; | |
7293 | ||
7294 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
7295 | on its own. */ | |
7296 | if (!die_needs_namespace (die, cu)) | |
7297 | return dwarf2_compute_name (name, die, cu, 1); | |
7298 | ||
7299 | back_to = make_cleanup (null_cleanup, NULL); | |
7300 | ||
7301 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
7302 | if (!attr) | |
7303 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
7304 | ||
7305 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB | |
7306 | has computed. */ | |
7307 | if (attr && DW_STRING (attr)) | |
7308 | { | |
7309 | char *demangled; | |
7310 | ||
7311 | mangled = DW_STRING (attr); | |
7312 | ||
7313 | /* Use DMGL_RET_DROP for C++ template functions to suppress their return | |
7314 | type. It is easier for GDB users to search for such functions as | |
7315 | `name(params)' than `long name(params)'. In such case the minimal | |
7316 | symbol names do not match the full symbol names but for template | |
7317 | functions there is never a need to look up their definition from their | |
7318 | declaration so the only disadvantage remains the minimal symbol | |
7319 | variant `long name(params)' does not have the proper inferior type. | |
7320 | */ | |
7321 | ||
a766d390 DE |
7322 | if (cu->language == language_go) |
7323 | { | |
7324 | /* This is a lie, but we already lie to the caller new_symbol_full. | |
7325 | new_symbol_full assumes we return the mangled name. | |
7326 | This just undoes that lie until things are cleaned up. */ | |
7327 | demangled = NULL; | |
7328 | } | |
7329 | else | |
7330 | { | |
7331 | demangled = cplus_demangle (mangled, | |
7332 | (DMGL_PARAMS | DMGL_ANSI | |
7333 | | (cu->language == language_java | |
7334 | ? DMGL_JAVA | DMGL_RET_POSTFIX | |
7335 | : DMGL_RET_DROP))); | |
7336 | } | |
900e11f9 JK |
7337 | if (demangled) |
7338 | { | |
7339 | make_cleanup (xfree, demangled); | |
7340 | canon = demangled; | |
7341 | } | |
7342 | else | |
7343 | { | |
7344 | canon = mangled; | |
7345 | need_copy = 0; | |
7346 | } | |
7347 | } | |
7348 | ||
7349 | if (canon == NULL || check_physname) | |
7350 | { | |
7351 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
7352 | ||
7353 | if (canon != NULL && strcmp (physname, canon) != 0) | |
7354 | { | |
7355 | /* It may not mean a bug in GDB. The compiler could also | |
7356 | compute DW_AT_linkage_name incorrectly. But in such case | |
7357 | GDB would need to be bug-to-bug compatible. */ | |
7358 | ||
7359 | complaint (&symfile_complaints, | |
7360 | _("Computed physname <%s> does not match demangled <%s> " | |
7361 | "(from linkage <%s>) - DIE at 0x%x [in module %s]"), | |
b64f50a1 | 7362 | physname, canon, mangled, die->offset.sect_off, objfile->name); |
900e11f9 JK |
7363 | |
7364 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
7365 | is available here - over computed PHYSNAME. It is safer | |
7366 | against both buggy GDB and buggy compilers. */ | |
7367 | ||
7368 | retval = canon; | |
7369 | } | |
7370 | else | |
7371 | { | |
7372 | retval = physname; | |
7373 | need_copy = 0; | |
7374 | } | |
7375 | } | |
7376 | else | |
7377 | retval = canon; | |
7378 | ||
7379 | if (need_copy) | |
7380 | retval = obsavestring (retval, strlen (retval), | |
bb5ed363 | 7381 | &objfile->objfile_obstack); |
900e11f9 JK |
7382 | |
7383 | do_cleanups (back_to); | |
7384 | return retval; | |
0114d602 DJ |
7385 | } |
7386 | ||
27aa8d6a SW |
7387 | /* Read the import statement specified by the given die and record it. */ |
7388 | ||
7389 | static void | |
7390 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
7391 | { | |
bb5ed363 | 7392 | struct objfile *objfile = cu->objfile; |
27aa8d6a | 7393 | struct attribute *import_attr; |
32019081 | 7394 | struct die_info *imported_die, *child_die; |
de4affc9 | 7395 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 7396 | const char *imported_name; |
794684b6 | 7397 | const char *imported_name_prefix; |
13387711 SW |
7398 | const char *canonical_name; |
7399 | const char *import_alias; | |
7400 | const char *imported_declaration = NULL; | |
794684b6 | 7401 | const char *import_prefix; |
32019081 JK |
7402 | VEC (const_char_ptr) *excludes = NULL; |
7403 | struct cleanup *cleanups; | |
13387711 SW |
7404 | |
7405 | char *temp; | |
27aa8d6a SW |
7406 | |
7407 | import_attr = dwarf2_attr (die, DW_AT_import, cu); | |
7408 | if (import_attr == NULL) | |
7409 | { | |
7410 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
7411 | dwarf_tag_name (die->tag)); | |
7412 | return; | |
7413 | } | |
7414 | ||
de4affc9 CC |
7415 | imported_cu = cu; |
7416 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
7417 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
7418 | if (imported_name == NULL) |
7419 | { | |
7420 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
7421 | ||
7422 | The import in the following code: | |
7423 | namespace A | |
7424 | { | |
7425 | typedef int B; | |
7426 | } | |
7427 | ||
7428 | int main () | |
7429 | { | |
7430 | using A::B; | |
7431 | B b; | |
7432 | return b; | |
7433 | } | |
7434 | ||
7435 | ... | |
7436 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
7437 | <52> DW_AT_decl_file : 1 | |
7438 | <53> DW_AT_decl_line : 6 | |
7439 | <54> DW_AT_import : <0x75> | |
7440 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
7441 | <59> DW_AT_name : B | |
7442 | <5b> DW_AT_decl_file : 1 | |
7443 | <5c> DW_AT_decl_line : 2 | |
7444 | <5d> DW_AT_type : <0x6e> | |
7445 | ... | |
7446 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
7447 | <76> DW_AT_byte_size : 4 | |
7448 | <77> DW_AT_encoding : 5 (signed) | |
7449 | ||
7450 | imports the wrong die ( 0x75 instead of 0x58 ). | |
7451 | This case will be ignored until the gcc bug is fixed. */ | |
7452 | return; | |
7453 | } | |
7454 | ||
82856980 SW |
7455 | /* Figure out the local name after import. */ |
7456 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 7457 | |
794684b6 SW |
7458 | /* Figure out where the statement is being imported to. */ |
7459 | import_prefix = determine_prefix (die, cu); | |
7460 | ||
7461 | /* Figure out what the scope of the imported die is and prepend it | |
7462 | to the name of the imported die. */ | |
de4affc9 | 7463 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 7464 | |
f55ee35c JK |
7465 | if (imported_die->tag != DW_TAG_namespace |
7466 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 7467 | { |
13387711 SW |
7468 | imported_declaration = imported_name; |
7469 | canonical_name = imported_name_prefix; | |
794684b6 | 7470 | } |
13387711 | 7471 | else if (strlen (imported_name_prefix) > 0) |
794684b6 | 7472 | { |
13387711 SW |
7473 | temp = alloca (strlen (imported_name_prefix) |
7474 | + 2 + strlen (imported_name) + 1); | |
7475 | strcpy (temp, imported_name_prefix); | |
7476 | strcat (temp, "::"); | |
7477 | strcat (temp, imported_name); | |
7478 | canonical_name = temp; | |
794684b6 | 7479 | } |
13387711 SW |
7480 | else |
7481 | canonical_name = imported_name; | |
794684b6 | 7482 | |
32019081 JK |
7483 | cleanups = make_cleanup (VEC_cleanup (const_char_ptr), &excludes); |
7484 | ||
7485 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) | |
7486 | for (child_die = die->child; child_die && child_die->tag; | |
7487 | child_die = sibling_die (child_die)) | |
7488 | { | |
7489 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
7490 | represented by an imported module entry with an import attribute | |
7491 | referring to the module and owned entries corresponding to those | |
7492 | entities that are renamed as part of being imported. */ | |
7493 | ||
7494 | if (child_die->tag != DW_TAG_imported_declaration) | |
7495 | { | |
7496 | complaint (&symfile_complaints, | |
7497 | _("child DW_TAG_imported_declaration expected " | |
7498 | "- DIE at 0x%x [in module %s]"), | |
b64f50a1 | 7499 | child_die->offset.sect_off, objfile->name); |
32019081 JK |
7500 | continue; |
7501 | } | |
7502 | ||
7503 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
7504 | if (import_attr == NULL) | |
7505 | { | |
7506 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
7507 | dwarf_tag_name (child_die->tag)); | |
7508 | continue; | |
7509 | } | |
7510 | ||
7511 | imported_cu = cu; | |
7512 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
7513 | &imported_cu); | |
7514 | imported_name = dwarf2_name (imported_die, imported_cu); | |
7515 | if (imported_name == NULL) | |
7516 | { | |
7517 | complaint (&symfile_complaints, | |
7518 | _("child DW_TAG_imported_declaration has unknown " | |
7519 | "imported name - DIE at 0x%x [in module %s]"), | |
b64f50a1 | 7520 | child_die->offset.sect_off, objfile->name); |
32019081 JK |
7521 | continue; |
7522 | } | |
7523 | ||
7524 | VEC_safe_push (const_char_ptr, excludes, imported_name); | |
7525 | ||
7526 | process_die (child_die, cu); | |
7527 | } | |
7528 | ||
c0cc3a76 SW |
7529 | cp_add_using_directive (import_prefix, |
7530 | canonical_name, | |
7531 | import_alias, | |
13387711 | 7532 | imported_declaration, |
32019081 | 7533 | excludes, |
bb5ed363 | 7534 | &objfile->objfile_obstack); |
32019081 JK |
7535 | |
7536 | do_cleanups (cleanups); | |
27aa8d6a SW |
7537 | } |
7538 | ||
f4dc4d17 | 7539 | /* Cleanup function for handle_DW_AT_stmt_list. */ |
ae2de4f8 | 7540 | |
cb1df416 DJ |
7541 | static void |
7542 | free_cu_line_header (void *arg) | |
7543 | { | |
7544 | struct dwarf2_cu *cu = arg; | |
7545 | ||
7546 | free_line_header (cu->line_header); | |
7547 | cu->line_header = NULL; | |
7548 | } | |
7549 | ||
9291a0cd TT |
7550 | static void |
7551 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu, | |
7552 | char **name, char **comp_dir) | |
7553 | { | |
7554 | struct attribute *attr; | |
7555 | ||
7556 | *name = NULL; | |
7557 | *comp_dir = NULL; | |
7558 | ||
7559 | /* Find the filename. Do not use dwarf2_name here, since the filename | |
7560 | is not a source language identifier. */ | |
7561 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
7562 | if (attr) | |
7563 | { | |
7564 | *name = DW_STRING (attr); | |
7565 | } | |
7566 | ||
7567 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); | |
7568 | if (attr) | |
7569 | *comp_dir = DW_STRING (attr); | |
7570 | else if (*name != NULL && IS_ABSOLUTE_PATH (*name)) | |
7571 | { | |
7572 | *comp_dir = ldirname (*name); | |
7573 | if (*comp_dir != NULL) | |
7574 | make_cleanup (xfree, *comp_dir); | |
7575 | } | |
7576 | if (*comp_dir != NULL) | |
7577 | { | |
7578 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
7579 | directory, get rid of it. */ | |
7580 | char *cp = strchr (*comp_dir, ':'); | |
7581 | ||
7582 | if (cp && cp != *comp_dir && cp[-1] == '.' && cp[1] == '/') | |
7583 | *comp_dir = cp + 1; | |
7584 | } | |
7585 | ||
7586 | if (*name == NULL) | |
7587 | *name = "<unknown>"; | |
7588 | } | |
7589 | ||
f4dc4d17 DE |
7590 | /* Handle DW_AT_stmt_list for a compilation unit. |
7591 | DIE is the DW_TAG_compile_unit die for CU. | |
f3f5162e DE |
7592 | COMP_DIR is the compilation directory. |
7593 | WANT_LINE_INFO is non-zero if the pc/line-number mapping is needed. */ | |
2ab95328 TT |
7594 | |
7595 | static void | |
7596 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
f4dc4d17 | 7597 | const char *comp_dir) |
2ab95328 TT |
7598 | { |
7599 | struct attribute *attr; | |
2ab95328 | 7600 | |
f4dc4d17 DE |
7601 | gdb_assert (! cu->per_cu->is_debug_types); |
7602 | ||
2ab95328 TT |
7603 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
7604 | if (attr) | |
7605 | { | |
7606 | unsigned int line_offset = DW_UNSND (attr); | |
7607 | struct line_header *line_header | |
3019eac3 | 7608 | = dwarf_decode_line_header (line_offset, cu); |
2ab95328 TT |
7609 | |
7610 | if (line_header) | |
dee91e82 DE |
7611 | { |
7612 | cu->line_header = line_header; | |
7613 | make_cleanup (free_cu_line_header, cu); | |
f4dc4d17 | 7614 | dwarf_decode_lines (line_header, comp_dir, cu, NULL, 1); |
dee91e82 | 7615 | } |
2ab95328 TT |
7616 | } |
7617 | } | |
7618 | ||
95554aad | 7619 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 7620 | |
c906108c | 7621 | static void |
e7c27a73 | 7622 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7623 | { |
dee91e82 | 7624 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
debd256d | 7625 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2acceee2 | 7626 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
7627 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
7628 | struct attribute *attr; | |
e1024ff1 | 7629 | char *name = NULL; |
c906108c SS |
7630 | char *comp_dir = NULL; |
7631 | struct die_info *child_die; | |
7632 | bfd *abfd = objfile->obfd; | |
e142c38c | 7633 | CORE_ADDR baseaddr; |
6e70227d | 7634 | |
e142c38c | 7635 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c | 7636 | |
fae299cd | 7637 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
7638 | |
7639 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
7640 | from finish_block. */ | |
2acceee2 | 7641 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c SS |
7642 | lowpc = highpc; |
7643 | lowpc += baseaddr; | |
7644 | highpc += baseaddr; | |
7645 | ||
9291a0cd | 7646 | find_file_and_directory (die, cu, &name, &comp_dir); |
e1024ff1 | 7647 | |
95554aad | 7648 | prepare_one_comp_unit (cu, die, cu->language); |
303b6f5d | 7649 | |
f4b8a18d KW |
7650 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
7651 | standardised yet. As a workaround for the language detection we fall | |
7652 | back to the DW_AT_producer string. */ | |
7653 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
7654 | cu->language = language_opencl; | |
7655 | ||
3019eac3 DE |
7656 | /* Similar hack for Go. */ |
7657 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
7658 | set_cu_language (DW_LANG_Go, cu); | |
7659 | ||
f4dc4d17 | 7660 | dwarf2_start_symtab (cu, name, comp_dir, lowpc); |
3019eac3 DE |
7661 | |
7662 | /* Decode line number information if present. We do this before | |
7663 | processing child DIEs, so that the line header table is available | |
7664 | for DW_AT_decl_file. */ | |
f4dc4d17 | 7665 | handle_DW_AT_stmt_list (die, cu, comp_dir); |
3019eac3 DE |
7666 | |
7667 | /* Process all dies in compilation unit. */ | |
7668 | if (die->child != NULL) | |
7669 | { | |
7670 | child_die = die->child; | |
7671 | while (child_die && child_die->tag) | |
7672 | { | |
7673 | process_die (child_die, cu); | |
7674 | child_die = sibling_die (child_die); | |
7675 | } | |
7676 | } | |
7677 | ||
7678 | /* Decode macro information, if present. Dwarf 2 macro information | |
7679 | refers to information in the line number info statement program | |
7680 | header, so we can only read it if we've read the header | |
7681 | successfully. */ | |
7682 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
7683 | if (attr && cu->line_header) | |
7684 | { | |
7685 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
7686 | complaint (&symfile_complaints, | |
7687 | _("CU refers to both DW_AT_GNU_macros and DW_AT_macro_info")); | |
7688 | ||
09262596 | 7689 | dwarf_decode_macros (cu, DW_UNSND (attr), comp_dir, 1); |
3019eac3 DE |
7690 | } |
7691 | else | |
7692 | { | |
7693 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
7694 | if (attr && cu->line_header) | |
7695 | { | |
7696 | unsigned int macro_offset = DW_UNSND (attr); | |
7697 | ||
09262596 | 7698 | dwarf_decode_macros (cu, macro_offset, comp_dir, 0); |
3019eac3 DE |
7699 | } |
7700 | } | |
7701 | ||
7702 | do_cleanups (back_to); | |
7703 | } | |
7704 | ||
f4dc4d17 DE |
7705 | /* TU version of handle_DW_AT_stmt_list for read_type_unit_scope. |
7706 | Create the set of symtabs used by this TU, or if this TU is sharing | |
7707 | symtabs with another TU and the symtabs have already been created | |
7708 | then restore those symtabs in the line header. | |
7709 | We don't need the pc/line-number mapping for type units. */ | |
3019eac3 DE |
7710 | |
7711 | static void | |
f4dc4d17 | 7712 | setup_type_unit_groups (struct die_info *die, struct dwarf2_cu *cu) |
3019eac3 | 7713 | { |
f4dc4d17 DE |
7714 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
7715 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
7716 | struct type_unit_group *tu_group; | |
7717 | int first_time; | |
7718 | struct line_header *lh; | |
3019eac3 | 7719 | struct attribute *attr; |
f4dc4d17 | 7720 | unsigned int i, line_offset; |
3019eac3 | 7721 | |
f4dc4d17 | 7722 | gdb_assert (per_cu->is_debug_types); |
3019eac3 | 7723 | |
f4dc4d17 | 7724 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
3019eac3 | 7725 | |
f4dc4d17 DE |
7726 | /* If we're using .gdb_index (includes -readnow) then |
7727 | per_cu->s.type_unit_group may not have been set up yet. */ | |
7728 | if (per_cu->s.type_unit_group == NULL) | |
094b34ac | 7729 | per_cu->s.type_unit_group = get_type_unit_group (cu, attr); |
f4dc4d17 DE |
7730 | tu_group = per_cu->s.type_unit_group; |
7731 | ||
7732 | /* If we've already processed this stmt_list there's no real need to | |
7733 | do it again, we could fake it and just recreate the part we need | |
7734 | (file name,index -> symtab mapping). If data shows this optimization | |
7735 | is useful we can do it then. */ | |
7736 | first_time = tu_group->primary_symtab == NULL; | |
7737 | ||
7738 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
7739 | debug info. */ | |
7740 | lh = NULL; | |
7741 | if (attr != NULL) | |
3019eac3 | 7742 | { |
f4dc4d17 DE |
7743 | line_offset = DW_UNSND (attr); |
7744 | lh = dwarf_decode_line_header (line_offset, cu); | |
7745 | } | |
7746 | if (lh == NULL) | |
7747 | { | |
7748 | if (first_time) | |
7749 | dwarf2_start_symtab (cu, "", NULL, 0); | |
7750 | else | |
7751 | { | |
7752 | gdb_assert (tu_group->symtabs == NULL); | |
7753 | restart_symtab (0); | |
7754 | } | |
7755 | /* Note: The primary symtab will get allocated at the end. */ | |
7756 | return; | |
3019eac3 DE |
7757 | } |
7758 | ||
f4dc4d17 DE |
7759 | cu->line_header = lh; |
7760 | make_cleanup (free_cu_line_header, cu); | |
3019eac3 | 7761 | |
f4dc4d17 DE |
7762 | if (first_time) |
7763 | { | |
7764 | dwarf2_start_symtab (cu, "", NULL, 0); | |
3019eac3 | 7765 | |
f4dc4d17 DE |
7766 | tu_group->num_symtabs = lh->num_file_names; |
7767 | tu_group->symtabs = XNEWVEC (struct symtab *, lh->num_file_names); | |
3019eac3 | 7768 | |
f4dc4d17 DE |
7769 | for (i = 0; i < lh->num_file_names; ++i) |
7770 | { | |
7771 | char *dir = NULL; | |
7772 | struct file_entry *fe = &lh->file_names[i]; | |
3019eac3 | 7773 | |
f4dc4d17 DE |
7774 | if (fe->dir_index) |
7775 | dir = lh->include_dirs[fe->dir_index - 1]; | |
7776 | dwarf2_start_subfile (fe->name, dir, NULL); | |
3019eac3 | 7777 | |
f4dc4d17 DE |
7778 | /* Note: We don't have to watch for the main subfile here, type units |
7779 | don't have DW_AT_name. */ | |
3019eac3 | 7780 | |
f4dc4d17 DE |
7781 | if (current_subfile->symtab == NULL) |
7782 | { | |
7783 | /* NOTE: start_subfile will recognize when it's been passed | |
7784 | a file it has already seen. So we can't assume there's a | |
7785 | simple mapping from lh->file_names to subfiles, | |
7786 | lh->file_names may contain dups. */ | |
7787 | current_subfile->symtab = allocate_symtab (current_subfile->name, | |
7788 | objfile); | |
7789 | } | |
7790 | ||
7791 | fe->symtab = current_subfile->symtab; | |
7792 | tu_group->symtabs[i] = fe->symtab; | |
7793 | } | |
7794 | } | |
7795 | else | |
3019eac3 | 7796 | { |
f4dc4d17 DE |
7797 | restart_symtab (0); |
7798 | ||
7799 | for (i = 0; i < lh->num_file_names; ++i) | |
7800 | { | |
7801 | struct file_entry *fe = &lh->file_names[i]; | |
7802 | ||
7803 | fe->symtab = tu_group->symtabs[i]; | |
7804 | } | |
3019eac3 DE |
7805 | } |
7806 | ||
f4dc4d17 DE |
7807 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
7808 | so they don't have a "real" (so to speak) symtab anyway. | |
7809 | There is later code that will assign the main symtab to all symbols | |
7810 | that don't have one. We need to handle the case of a symbol with a | |
7811 | missing symtab (DW_AT_decl_file) anyway. */ | |
7812 | } | |
3019eac3 | 7813 | |
f4dc4d17 DE |
7814 | /* Process DW_TAG_type_unit. |
7815 | For TUs we want to skip the first top level sibling if it's not the | |
7816 | actual type being defined by this TU. In this case the first top | |
7817 | level sibling is there to provide context only. */ | |
3019eac3 | 7818 | |
f4dc4d17 DE |
7819 | static void |
7820 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
7821 | { | |
7822 | struct die_info *child_die; | |
3019eac3 | 7823 | |
f4dc4d17 DE |
7824 | prepare_one_comp_unit (cu, die, language_minimal); |
7825 | ||
7826 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
7827 | We do this before processing child DIEs, so that the line header table | |
7828 | is available for DW_AT_decl_file. */ | |
7829 | setup_type_unit_groups (die, cu); | |
7830 | ||
7831 | if (die->child != NULL) | |
7832 | { | |
7833 | child_die = die->child; | |
7834 | while (child_die && child_die->tag) | |
7835 | { | |
7836 | process_die (child_die, cu); | |
7837 | child_die = sibling_die (child_die); | |
7838 | } | |
7839 | } | |
3019eac3 DE |
7840 | } |
7841 | \f | |
7842 | /* DWO files. */ | |
7843 | ||
7844 | static hashval_t | |
7845 | hash_dwo_file (const void *item) | |
7846 | { | |
7847 | const struct dwo_file *dwo_file = item; | |
7848 | ||
7849 | return htab_hash_string (dwo_file->dwo_name); | |
7850 | } | |
7851 | ||
7852 | static int | |
7853 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
7854 | { | |
7855 | const struct dwo_file *lhs = item_lhs; | |
7856 | const struct dwo_file *rhs = item_rhs; | |
7857 | ||
7858 | return strcmp (lhs->dwo_name, rhs->dwo_name) == 0; | |
7859 | } | |
7860 | ||
7861 | /* Allocate a hash table for DWO files. */ | |
7862 | ||
7863 | static htab_t | |
7864 | allocate_dwo_file_hash_table (void) | |
7865 | { | |
7866 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
7867 | ||
7868 | return htab_create_alloc_ex (41, | |
7869 | hash_dwo_file, | |
7870 | eq_dwo_file, | |
7871 | NULL, | |
7872 | &objfile->objfile_obstack, | |
7873 | hashtab_obstack_allocate, | |
7874 | dummy_obstack_deallocate); | |
7875 | } | |
7876 | ||
7877 | static hashval_t | |
7878 | hash_dwo_unit (const void *item) | |
7879 | { | |
7880 | const struct dwo_unit *dwo_unit = item; | |
7881 | ||
7882 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
7883 | return dwo_unit->signature; | |
7884 | } | |
7885 | ||
7886 | static int | |
7887 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
7888 | { | |
7889 | const struct dwo_unit *lhs = item_lhs; | |
7890 | const struct dwo_unit *rhs = item_rhs; | |
7891 | ||
7892 | /* The signature is assumed to be unique within the DWO file. | |
7893 | So while object file CU dwo_id's always have the value zero, | |
7894 | that's OK, assuming each object file DWO file has only one CU, | |
7895 | and that's the rule for now. */ | |
7896 | return lhs->signature == rhs->signature; | |
7897 | } | |
7898 | ||
7899 | /* Allocate a hash table for DWO CUs,TUs. | |
7900 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
7901 | ||
7902 | static htab_t | |
7903 | allocate_dwo_unit_table (struct objfile *objfile) | |
7904 | { | |
7905 | /* Start out with a pretty small number. | |
7906 | Generally DWO files contain only one CU and maybe some TUs. */ | |
7907 | return htab_create_alloc_ex (3, | |
7908 | hash_dwo_unit, | |
7909 | eq_dwo_unit, | |
7910 | NULL, | |
7911 | &objfile->objfile_obstack, | |
7912 | hashtab_obstack_allocate, | |
7913 | dummy_obstack_deallocate); | |
7914 | } | |
7915 | ||
7916 | /* This function is mapped across the sections and remembers the offset and | |
7917 | size of each of the DWO debugging sections we are interested in. */ | |
7918 | ||
7919 | static void | |
7920 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, void *dwo_file_ptr) | |
7921 | { | |
7922 | struct dwo_file *dwo_file = dwo_file_ptr; | |
7923 | const struct dwo_section_names *names = &dwo_section_names; | |
7924 | ||
7925 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
7926 | { | |
7927 | dwo_file->sections.abbrev.asection = sectp; | |
7928 | dwo_file->sections.abbrev.size = bfd_get_section_size (sectp); | |
7929 | } | |
7930 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
7931 | { | |
7932 | dwo_file->sections.info.asection = sectp; | |
7933 | dwo_file->sections.info.size = bfd_get_section_size (sectp); | |
7934 | } | |
7935 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
7936 | { | |
7937 | dwo_file->sections.line.asection = sectp; | |
7938 | dwo_file->sections.line.size = bfd_get_section_size (sectp); | |
7939 | } | |
7940 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
7941 | { | |
7942 | dwo_file->sections.loc.asection = sectp; | |
7943 | dwo_file->sections.loc.size = bfd_get_section_size (sectp); | |
7944 | } | |
09262596 DE |
7945 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) |
7946 | { | |
7947 | dwo_file->sections.macinfo.asection = sectp; | |
7948 | dwo_file->sections.macinfo.size = bfd_get_section_size (sectp); | |
7949 | } | |
7950 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
7951 | { | |
7952 | dwo_file->sections.macro.asection = sectp; | |
7953 | dwo_file->sections.macro.size = bfd_get_section_size (sectp); | |
7954 | } | |
3019eac3 DE |
7955 | else if (section_is_p (sectp->name, &names->str_dwo)) |
7956 | { | |
7957 | dwo_file->sections.str.asection = sectp; | |
7958 | dwo_file->sections.str.size = bfd_get_section_size (sectp); | |
7959 | } | |
7960 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
7961 | { | |
7962 | dwo_file->sections.str_offsets.asection = sectp; | |
7963 | dwo_file->sections.str_offsets.size = bfd_get_section_size (sectp); | |
7964 | } | |
7965 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
7966 | { | |
7967 | struct dwarf2_section_info type_section; | |
7968 | ||
7969 | memset (&type_section, 0, sizeof (type_section)); | |
7970 | type_section.asection = sectp; | |
7971 | type_section.size = bfd_get_section_size (sectp); | |
7972 | VEC_safe_push (dwarf2_section_info_def, dwo_file->sections.types, | |
7973 | &type_section); | |
7974 | } | |
7975 | } | |
7976 | ||
7977 | /* Structure used to pass data to create_debug_info_hash_table_reader. */ | |
7978 | ||
7979 | struct create_dwo_info_table_data | |
7980 | { | |
7981 | struct dwo_file *dwo_file; | |
7982 | htab_t cu_htab; | |
7983 | }; | |
7984 | ||
7985 | /* die_reader_func for create_debug_info_hash_table. */ | |
7986 | ||
7987 | static void | |
7988 | create_debug_info_hash_table_reader (const struct die_reader_specs *reader, | |
7989 | gdb_byte *info_ptr, | |
7990 | struct die_info *comp_unit_die, | |
7991 | int has_children, | |
7992 | void *datap) | |
7993 | { | |
7994 | struct dwarf2_cu *cu = reader->cu; | |
7995 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
7996 | sect_offset offset = cu->per_cu->offset; | |
7997 | struct dwarf2_section_info *section = cu->per_cu->info_or_types_section; | |
7998 | struct create_dwo_info_table_data *data = datap; | |
7999 | struct dwo_file *dwo_file = data->dwo_file; | |
8000 | htab_t cu_htab = data->cu_htab; | |
8001 | void **slot; | |
8002 | struct attribute *attr; | |
8003 | struct dwo_unit *dwo_unit; | |
8004 | ||
8005 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
8006 | if (attr == NULL) | |
8007 | { | |
8008 | error (_("Dwarf Error: debug entry at offset 0x%x is missing" | |
8009 | " its dwo_id [in module %s]"), | |
8010 | offset.sect_off, dwo_file->dwo_name); | |
8011 | return; | |
8012 | } | |
8013 | ||
8014 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
8015 | dwo_unit->dwo_file = dwo_file; | |
8016 | dwo_unit->signature = DW_UNSND (attr); | |
8017 | dwo_unit->info_or_types_section = section; | |
8018 | dwo_unit->offset = offset; | |
8019 | dwo_unit->length = cu->per_cu->length; | |
8020 | ||
8021 | slot = htab_find_slot (cu_htab, dwo_unit, INSERT); | |
8022 | gdb_assert (slot != NULL); | |
8023 | if (*slot != NULL) | |
8024 | { | |
8025 | const struct dwo_unit *dup_dwo_unit = *slot; | |
8026 | ||
8027 | complaint (&symfile_complaints, | |
8028 | _("debug entry at offset 0x%x is duplicate to the entry at" | |
8029 | " offset 0x%x, dwo_id 0x%s [in module %s]"), | |
8030 | offset.sect_off, dup_dwo_unit->offset.sect_off, | |
8031 | phex (dwo_unit->signature, sizeof (dwo_unit->signature)), | |
8032 | dwo_file->dwo_name); | |
8033 | } | |
8034 | else | |
8035 | *slot = dwo_unit; | |
8036 | ||
09406207 | 8037 | if (dwarf2_read_debug) |
3019eac3 DE |
8038 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, dwo_id 0x%s\n", |
8039 | offset.sect_off, | |
8040 | phex (dwo_unit->signature, | |
8041 | sizeof (dwo_unit->signature))); | |
8042 | } | |
8043 | ||
8044 | /* Create a hash table to map DWO IDs to their CU entry in .debug_info.dwo. */ | |
8045 | ||
8046 | static htab_t | |
8047 | create_debug_info_hash_table (struct dwo_file *dwo_file) | |
8048 | { | |
8049 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8050 | struct dwarf2_section_info *section = &dwo_file->sections.info; | |
8051 | bfd *abfd; | |
8052 | htab_t cu_htab; | |
8053 | gdb_byte *info_ptr, *end_ptr; | |
8054 | struct create_dwo_info_table_data create_dwo_info_table_data; | |
8055 | ||
8056 | dwarf2_read_section (objfile, section); | |
8057 | info_ptr = section->buffer; | |
8058 | ||
8059 | if (info_ptr == NULL) | |
8060 | return NULL; | |
8061 | ||
8062 | /* We can't set abfd until now because the section may be empty or | |
8063 | not present, in which case section->asection will be NULL. */ | |
8064 | abfd = section->asection->owner; | |
8065 | ||
09406207 | 8066 | if (dwarf2_read_debug) |
3019eac3 DE |
8067 | fprintf_unfiltered (gdb_stdlog, "Reading .debug_info.dwo for %s:\n", |
8068 | bfd_get_filename (abfd)); | |
8069 | ||
8070 | cu_htab = allocate_dwo_unit_table (objfile); | |
8071 | ||
8072 | create_dwo_info_table_data.dwo_file = dwo_file; | |
8073 | create_dwo_info_table_data.cu_htab = cu_htab; | |
8074 | ||
8075 | end_ptr = info_ptr + section->size; | |
8076 | while (info_ptr < end_ptr) | |
8077 | { | |
8078 | struct dwarf2_per_cu_data per_cu; | |
8079 | ||
8080 | memset (&per_cu, 0, sizeof (per_cu)); | |
8081 | per_cu.objfile = objfile; | |
8082 | per_cu.is_debug_types = 0; | |
8083 | per_cu.offset.sect_off = info_ptr - section->buffer; | |
8084 | per_cu.info_or_types_section = section; | |
8085 | ||
8086 | init_cutu_and_read_dies_no_follow (&per_cu, | |
8087 | &dwo_file->sections.abbrev, | |
8088 | dwo_file, | |
8089 | create_debug_info_hash_table_reader, | |
8090 | &create_dwo_info_table_data); | |
8091 | ||
8092 | info_ptr += per_cu.length; | |
8093 | } | |
8094 | ||
8095 | return cu_htab; | |
8096 | } | |
8097 | ||
8098 | /* Subroutine of open_dwo_file to simplify it. | |
8099 | Open the file specified by FILE_NAME and hand it off to BFD for | |
8100 | preliminary analysis. Return a newly initialized bfd *, which | |
8101 | includes a canonicalized copy of FILE_NAME. | |
8102 | In case of trouble, return NULL. | |
8103 | NOTE: This function is derived from symfile_bfd_open. */ | |
8104 | ||
8105 | static bfd * | |
8106 | try_open_dwo_file (const char *file_name) | |
8107 | { | |
8108 | bfd *sym_bfd; | |
8109 | int desc; | |
8110 | char *absolute_name; | |
3019eac3 DE |
8111 | |
8112 | desc = openp (debug_file_directory, OPF_TRY_CWD_FIRST, file_name, | |
8113 | O_RDONLY | O_BINARY, &absolute_name); | |
8114 | if (desc < 0) | |
8115 | return NULL; | |
8116 | ||
8117 | sym_bfd = bfd_fopen (absolute_name, gnutarget, FOPEN_RB, desc); | |
8118 | if (!sym_bfd) | |
8119 | { | |
3019eac3 DE |
8120 | xfree (absolute_name); |
8121 | return NULL; | |
8122 | } | |
8123 | bfd_set_cacheable (sym_bfd, 1); | |
8124 | ||
8125 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
8126 | { | |
8127 | bfd_close (sym_bfd); /* This also closes desc. */ | |
8128 | xfree (absolute_name); | |
8129 | return NULL; | |
8130 | } | |
8131 | ||
8132 | /* bfd_usrdata exists for applications and libbfd must not touch it. */ | |
8133 | gdb_assert (bfd_usrdata (sym_bfd) == NULL); | |
8134 | ||
8135 | return sym_bfd; | |
8136 | } | |
8137 | ||
8138 | /* Try to open DWO file DWO_NAME. | |
8139 | COMP_DIR is the DW_AT_comp_dir attribute. | |
8140 | The result is the bfd handle of the file. | |
8141 | If there is a problem finding or opening the file, return NULL. | |
8142 | Upon success, the canonicalized path of the file is stored in the bfd, | |
8143 | same as symfile_bfd_open. */ | |
8144 | ||
8145 | static bfd * | |
8146 | open_dwo_file (const char *dwo_name, const char *comp_dir) | |
8147 | { | |
8148 | bfd *abfd; | |
3019eac3 DE |
8149 | |
8150 | if (IS_ABSOLUTE_PATH (dwo_name)) | |
8151 | return try_open_dwo_file (dwo_name); | |
8152 | ||
8153 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
8154 | ||
8155 | if (comp_dir != NULL) | |
8156 | { | |
8157 | char *path_to_try = concat (comp_dir, SLASH_STRING, dwo_name, NULL); | |
8158 | ||
8159 | /* NOTE: If comp_dir is a relative path, this will also try the | |
8160 | search path, which seems useful. */ | |
8161 | abfd = try_open_dwo_file (path_to_try); | |
8162 | xfree (path_to_try); | |
8163 | if (abfd != NULL) | |
8164 | return abfd; | |
8165 | } | |
8166 | ||
8167 | /* That didn't work, try debug-file-directory, which, despite its name, | |
8168 | is a list of paths. */ | |
8169 | ||
8170 | if (*debug_file_directory == '\0') | |
8171 | return NULL; | |
8172 | ||
8173 | return try_open_dwo_file (dwo_name); | |
8174 | } | |
8175 | ||
8176 | /* Initialize the use of the DWO file specified by DWO_NAME. */ | |
8177 | ||
8178 | static struct dwo_file * | |
8179 | init_dwo_file (const char *dwo_name, const char *comp_dir) | |
8180 | { | |
8181 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8182 | struct dwo_file *dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
8183 | struct dwo_file); | |
8184 | bfd *abfd; | |
8185 | struct cleanup *cleanups; | |
8186 | ||
09406207 | 8187 | if (dwarf2_read_debug) |
3019eac3 DE |
8188 | fprintf_unfiltered (gdb_stdlog, "Reading DWO file %s:\n", dwo_name); |
8189 | ||
8190 | abfd = open_dwo_file (dwo_name, comp_dir); | |
8191 | if (abfd == NULL) | |
8192 | return NULL; | |
8193 | dwo_file->dwo_name = dwo_name; | |
8194 | dwo_file->dwo_bfd = abfd; | |
8195 | ||
8196 | cleanups = make_cleanup (free_dwo_file_cleanup, dwo_file); | |
8197 | ||
8198 | bfd_map_over_sections (abfd, dwarf2_locate_dwo_sections, dwo_file); | |
8199 | ||
8200 | dwo_file->cus = create_debug_info_hash_table (dwo_file); | |
8201 | ||
8202 | dwo_file->tus = create_debug_types_hash_table (dwo_file, | |
8203 | dwo_file->sections.types); | |
8204 | ||
8205 | discard_cleanups (cleanups); | |
8206 | ||
8207 | return dwo_file; | |
8208 | } | |
8209 | ||
8210 | /* Lookup DWO file DWO_NAME. */ | |
8211 | ||
8212 | static struct dwo_file * | |
8213 | lookup_dwo_file (char *dwo_name, const char *comp_dir) | |
8214 | { | |
8215 | struct dwo_file *dwo_file; | |
8216 | struct dwo_file find_entry; | |
8217 | void **slot; | |
8218 | ||
8219 | if (dwarf2_per_objfile->dwo_files == NULL) | |
8220 | dwarf2_per_objfile->dwo_files = allocate_dwo_file_hash_table (); | |
8221 | ||
8222 | /* Have we already seen this DWO file? */ | |
8223 | find_entry.dwo_name = dwo_name; | |
8224 | slot = htab_find_slot (dwarf2_per_objfile->dwo_files, &find_entry, INSERT); | |
8225 | ||
8226 | /* If not, read it in and build a table of the DWOs it contains. */ | |
8227 | if (*slot == NULL) | |
8228 | *slot = init_dwo_file (dwo_name, comp_dir); | |
8229 | ||
8230 | /* NOTE: This will be NULL if unable to open the file. */ | |
8231 | dwo_file = *slot; | |
8232 | ||
8233 | return dwo_file; | |
8234 | } | |
8235 | ||
8236 | /* Lookup the DWO CU referenced from THIS_CU in DWO file DWO_NAME. | |
8237 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. | |
8238 | SIGNATURE is the "dwo_id" of the CU (for consistency we use the same | |
8239 | nomenclature as TUs). | |
1c658ad5 | 8240 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
3019eac3 DE |
8241 | (dwo_id mismatch or couldn't find the DWO file). */ |
8242 | ||
8243 | static struct dwo_unit * | |
8244 | lookup_dwo_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
8245 | char *dwo_name, const char *comp_dir, | |
8246 | ULONGEST signature) | |
8247 | { | |
8248 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8249 | struct dwo_file *dwo_file; | |
8250 | ||
8251 | dwo_file = lookup_dwo_file (dwo_name, comp_dir); | |
8252 | if (dwo_file == NULL) | |
8253 | return NULL; | |
8254 | ||
8255 | /* Look up the DWO using its signature(dwo_id). */ | |
8256 | ||
8257 | if (dwo_file->cus != NULL) | |
8258 | { | |
8259 | struct dwo_unit find_dwo_cu, *dwo_cu; | |
8260 | ||
8261 | find_dwo_cu.signature = signature; | |
8262 | dwo_cu = htab_find (dwo_file->cus, &find_dwo_cu); | |
a766d390 | 8263 | |
3019eac3 DE |
8264 | if (dwo_cu != NULL) |
8265 | return dwo_cu; | |
8266 | } | |
c906108c | 8267 | |
3019eac3 | 8268 | /* We didn't find it. This must mean a dwo_id mismatch. */ |
df8a16a1 | 8269 | |
3019eac3 DE |
8270 | complaint (&symfile_complaints, |
8271 | _("Could not find DWO CU referenced by CU at offset 0x%x" | |
8272 | " [in module %s]"), | |
8273 | this_cu->offset.sect_off, objfile->name); | |
8274 | return NULL; | |
8275 | } | |
c906108c | 8276 | |
3019eac3 DE |
8277 | /* Lookup the DWO TU referenced from THIS_TU in DWO file DWO_NAME. |
8278 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. | |
1c658ad5 | 8279 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
3019eac3 | 8280 | (dwo_id mismatch or couldn't find the DWO file). */ |
debd256d | 8281 | |
3019eac3 DE |
8282 | static struct dwo_unit * |
8283 | lookup_dwo_type_unit (struct signatured_type *this_tu, | |
8284 | char *dwo_name, const char *comp_dir) | |
8285 | { | |
8286 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8287 | struct dwo_file *dwo_file; | |
cb1df416 | 8288 | |
3019eac3 DE |
8289 | dwo_file = lookup_dwo_file (dwo_name, comp_dir); |
8290 | if (dwo_file == NULL) | |
8291 | return NULL; | |
cf2c3c16 | 8292 | |
3019eac3 DE |
8293 | /* Look up the DWO using its signature(dwo_id). */ |
8294 | ||
8295 | if (dwo_file->tus != NULL) | |
cf2c3c16 | 8296 | { |
3019eac3 | 8297 | struct dwo_unit find_dwo_tu, *dwo_tu; |
9a619af0 | 8298 | |
3019eac3 DE |
8299 | find_dwo_tu.signature = this_tu->signature; |
8300 | dwo_tu = htab_find (dwo_file->tus, &find_dwo_tu); | |
8301 | ||
8302 | if (dwo_tu != NULL) | |
8303 | return dwo_tu; | |
2e276125 | 8304 | } |
9cdd5dbd | 8305 | |
3019eac3 DE |
8306 | /* We didn't find it. This must mean a dwo_id mismatch. */ |
8307 | ||
8308 | complaint (&symfile_complaints, | |
8309 | _("Could not find DWO TU referenced by TU at offset 0x%x" | |
8310 | " [in module %s]"), | |
8311 | this_tu->per_cu.offset.sect_off, objfile->name); | |
8312 | return NULL; | |
5fb290d7 DJ |
8313 | } |
8314 | ||
3019eac3 DE |
8315 | /* Free all resources associated with DWO_FILE. |
8316 | Close the DWO file and munmap the sections. | |
8317 | All memory should be on the objfile obstack. */ | |
348e048f DE |
8318 | |
8319 | static void | |
3019eac3 | 8320 | free_dwo_file (struct dwo_file *dwo_file, struct objfile *objfile) |
348e048f | 8321 | { |
3019eac3 DE |
8322 | int ix; |
8323 | struct dwarf2_section_info *section; | |
348e048f | 8324 | |
3019eac3 DE |
8325 | gdb_assert (dwo_file->dwo_bfd != objfile->obfd); |
8326 | bfd_close (dwo_file->dwo_bfd); | |
348e048f | 8327 | |
3019eac3 DE |
8328 | munmap_section_buffer (&dwo_file->sections.abbrev); |
8329 | munmap_section_buffer (&dwo_file->sections.info); | |
8330 | munmap_section_buffer (&dwo_file->sections.line); | |
8331 | munmap_section_buffer (&dwo_file->sections.loc); | |
8332 | munmap_section_buffer (&dwo_file->sections.str); | |
8333 | munmap_section_buffer (&dwo_file->sections.str_offsets); | |
348e048f | 8334 | |
3019eac3 DE |
8335 | for (ix = 0; |
8336 | VEC_iterate (dwarf2_section_info_def, dwo_file->sections.types, | |
8337 | ix, section); | |
8338 | ++ix) | |
8339 | munmap_section_buffer (section); | |
348e048f | 8340 | |
3019eac3 DE |
8341 | VEC_free (dwarf2_section_info_def, dwo_file->sections.types); |
8342 | } | |
348e048f | 8343 | |
3019eac3 | 8344 | /* Wrapper for free_dwo_file for use in cleanups. */ |
348e048f | 8345 | |
3019eac3 DE |
8346 | static void |
8347 | free_dwo_file_cleanup (void *arg) | |
8348 | { | |
8349 | struct dwo_file *dwo_file = (struct dwo_file *) arg; | |
8350 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
348e048f | 8351 | |
3019eac3 DE |
8352 | free_dwo_file (dwo_file, objfile); |
8353 | } | |
348e048f | 8354 | |
3019eac3 | 8355 | /* Traversal function for free_dwo_files. */ |
2ab95328 | 8356 | |
3019eac3 DE |
8357 | static int |
8358 | free_dwo_file_from_slot (void **slot, void *info) | |
8359 | { | |
8360 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
8361 | struct objfile *objfile = (struct objfile *) info; | |
348e048f | 8362 | |
3019eac3 | 8363 | free_dwo_file (dwo_file, objfile); |
348e048f | 8364 | |
3019eac3 DE |
8365 | return 1; |
8366 | } | |
348e048f | 8367 | |
3019eac3 | 8368 | /* Free all resources associated with DWO_FILES. */ |
348e048f | 8369 | |
3019eac3 DE |
8370 | static void |
8371 | free_dwo_files (htab_t dwo_files, struct objfile *objfile) | |
8372 | { | |
8373 | htab_traverse_noresize (dwo_files, free_dwo_file_from_slot, objfile); | |
348e048f | 8374 | } |
3019eac3 DE |
8375 | \f |
8376 | /* Read in various DIEs. */ | |
348e048f | 8377 | |
d389af10 JK |
8378 | /* qsort helper for inherit_abstract_dies. */ |
8379 | ||
8380 | static int | |
8381 | unsigned_int_compar (const void *ap, const void *bp) | |
8382 | { | |
8383 | unsigned int a = *(unsigned int *) ap; | |
8384 | unsigned int b = *(unsigned int *) bp; | |
8385 | ||
8386 | return (a > b) - (b > a); | |
8387 | } | |
8388 | ||
8389 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). | |
3e43a32a MS |
8390 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
8391 | already referenced by DW_AT_abstract_origin from the children of the | |
8392 | current DIE. */ | |
d389af10 JK |
8393 | |
8394 | static void | |
8395 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
8396 | { | |
8397 | struct die_info *child_die; | |
8398 | unsigned die_children_count; | |
8399 | /* CU offsets which were referenced by children of the current DIE. */ | |
b64f50a1 JK |
8400 | sect_offset *offsets; |
8401 | sect_offset *offsets_end, *offsetp; | |
d389af10 JK |
8402 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
8403 | struct die_info *origin_die; | |
8404 | /* Iterator of the ORIGIN_DIE children. */ | |
8405 | struct die_info *origin_child_die; | |
8406 | struct cleanup *cleanups; | |
8407 | struct attribute *attr; | |
cd02d79d PA |
8408 | struct dwarf2_cu *origin_cu; |
8409 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
8410 | |
8411 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
8412 | if (!attr) | |
8413 | return; | |
8414 | ||
cd02d79d PA |
8415 | /* Note that following die references may follow to a die in a |
8416 | different cu. */ | |
8417 | ||
8418 | origin_cu = cu; | |
8419 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
8420 | ||
8421 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
8422 | symbols in. */ | |
8423 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
8424 | origin_cu->list_in_scope = cu->list_in_scope; | |
8425 | ||
edb3359d DJ |
8426 | if (die->tag != origin_die->tag |
8427 | && !(die->tag == DW_TAG_inlined_subroutine | |
8428 | && origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
8429 | complaint (&symfile_complaints, |
8430 | _("DIE 0x%x and its abstract origin 0x%x have different tags"), | |
b64f50a1 | 8431 | die->offset.sect_off, origin_die->offset.sect_off); |
d389af10 JK |
8432 | |
8433 | child_die = die->child; | |
8434 | die_children_count = 0; | |
8435 | while (child_die && child_die->tag) | |
8436 | { | |
8437 | child_die = sibling_die (child_die); | |
8438 | die_children_count++; | |
8439 | } | |
8440 | offsets = xmalloc (sizeof (*offsets) * die_children_count); | |
8441 | cleanups = make_cleanup (xfree, offsets); | |
8442 | ||
8443 | offsets_end = offsets; | |
8444 | child_die = die->child; | |
8445 | while (child_die && child_die->tag) | |
8446 | { | |
c38f313d DJ |
8447 | /* For each CHILD_DIE, find the corresponding child of |
8448 | ORIGIN_DIE. If there is more than one layer of | |
8449 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
8450 | but GCC versions at least through 4.4 generate this (GCC PR | |
8451 | 40573). */ | |
8452 | struct die_info *child_origin_die = child_die; | |
cd02d79d | 8453 | struct dwarf2_cu *child_origin_cu = cu; |
9a619af0 | 8454 | |
c38f313d DJ |
8455 | while (1) |
8456 | { | |
cd02d79d PA |
8457 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
8458 | child_origin_cu); | |
c38f313d DJ |
8459 | if (attr == NULL) |
8460 | break; | |
cd02d79d PA |
8461 | child_origin_die = follow_die_ref (child_origin_die, attr, |
8462 | &child_origin_cu); | |
c38f313d DJ |
8463 | } |
8464 | ||
d389af10 JK |
8465 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
8466 | counterpart may exist. */ | |
c38f313d | 8467 | if (child_origin_die != child_die) |
d389af10 | 8468 | { |
edb3359d DJ |
8469 | if (child_die->tag != child_origin_die->tag |
8470 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
8471 | && child_origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
8472 | complaint (&symfile_complaints, |
8473 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
b64f50a1 JK |
8474 | "different tags"), child_die->offset.sect_off, |
8475 | child_origin_die->offset.sect_off); | |
c38f313d DJ |
8476 | if (child_origin_die->parent != origin_die) |
8477 | complaint (&symfile_complaints, | |
8478 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
b64f50a1 JK |
8479 | "different parents"), child_die->offset.sect_off, |
8480 | child_origin_die->offset.sect_off); | |
c38f313d DJ |
8481 | else |
8482 | *offsets_end++ = child_origin_die->offset; | |
d389af10 JK |
8483 | } |
8484 | child_die = sibling_die (child_die); | |
8485 | } | |
8486 | qsort (offsets, offsets_end - offsets, sizeof (*offsets), | |
8487 | unsigned_int_compar); | |
8488 | for (offsetp = offsets + 1; offsetp < offsets_end; offsetp++) | |
b64f50a1 | 8489 | if (offsetp[-1].sect_off == offsetp->sect_off) |
3e43a32a MS |
8490 | complaint (&symfile_complaints, |
8491 | _("Multiple children of DIE 0x%x refer " | |
8492 | "to DIE 0x%x as their abstract origin"), | |
b64f50a1 | 8493 | die->offset.sect_off, offsetp->sect_off); |
d389af10 JK |
8494 | |
8495 | offsetp = offsets; | |
8496 | origin_child_die = origin_die->child; | |
8497 | while (origin_child_die && origin_child_die->tag) | |
8498 | { | |
8499 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 JK |
8500 | while (offsetp < offsets_end |
8501 | && offsetp->sect_off < origin_child_die->offset.sect_off) | |
d389af10 | 8502 | offsetp++; |
b64f50a1 JK |
8503 | if (offsetp >= offsets_end |
8504 | || offsetp->sect_off > origin_child_die->offset.sect_off) | |
d389af10 JK |
8505 | { |
8506 | /* Found that ORIGIN_CHILD_DIE is really not referenced. */ | |
cd02d79d | 8507 | process_die (origin_child_die, origin_cu); |
d389af10 JK |
8508 | } |
8509 | origin_child_die = sibling_die (origin_child_die); | |
8510 | } | |
cd02d79d | 8511 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
d389af10 JK |
8512 | |
8513 | do_cleanups (cleanups); | |
8514 | } | |
8515 | ||
c906108c | 8516 | static void |
e7c27a73 | 8517 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 8518 | { |
e7c27a73 | 8519 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 8520 | struct context_stack *new; |
c906108c SS |
8521 | CORE_ADDR lowpc; |
8522 | CORE_ADDR highpc; | |
8523 | struct die_info *child_die; | |
edb3359d | 8524 | struct attribute *attr, *call_line, *call_file; |
c906108c | 8525 | char *name; |
e142c38c | 8526 | CORE_ADDR baseaddr; |
801e3a5b | 8527 | struct block *block; |
edb3359d | 8528 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
34eaf542 TT |
8529 | VEC (symbolp) *template_args = NULL; |
8530 | struct template_symbol *templ_func = NULL; | |
edb3359d DJ |
8531 | |
8532 | if (inlined_func) | |
8533 | { | |
8534 | /* If we do not have call site information, we can't show the | |
8535 | caller of this inlined function. That's too confusing, so | |
8536 | only use the scope for local variables. */ | |
8537 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
8538 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
8539 | if (call_line == NULL || call_file == NULL) | |
8540 | { | |
8541 | read_lexical_block_scope (die, cu); | |
8542 | return; | |
8543 | } | |
8544 | } | |
c906108c | 8545 | |
e142c38c DJ |
8546 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
8547 | ||
94af9270 | 8548 | name = dwarf2_name (die, cu); |
c906108c | 8549 | |
e8d05480 JB |
8550 | /* Ignore functions with missing or empty names. These are actually |
8551 | illegal according to the DWARF standard. */ | |
8552 | if (name == NULL) | |
8553 | { | |
8554 | complaint (&symfile_complaints, | |
b64f50a1 JK |
8555 | _("missing name for subprogram DIE at %d"), |
8556 | die->offset.sect_off); | |
e8d05480 JB |
8557 | return; |
8558 | } | |
8559 | ||
8560 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
8561 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) | |
8562 | { | |
ae4d0c03 PM |
8563 | attr = dwarf2_attr (die, DW_AT_external, cu); |
8564 | if (!attr || !DW_UNSND (attr)) | |
8565 | complaint (&symfile_complaints, | |
3e43a32a MS |
8566 | _("cannot get low and high bounds " |
8567 | "for subprogram DIE at %d"), | |
b64f50a1 | 8568 | die->offset.sect_off); |
e8d05480 JB |
8569 | return; |
8570 | } | |
c906108c SS |
8571 | |
8572 | lowpc += baseaddr; | |
8573 | highpc += baseaddr; | |
8574 | ||
34eaf542 TT |
8575 | /* If we have any template arguments, then we must allocate a |
8576 | different sort of symbol. */ | |
8577 | for (child_die = die->child; child_die; child_die = sibling_die (child_die)) | |
8578 | { | |
8579 | if (child_die->tag == DW_TAG_template_type_param | |
8580 | || child_die->tag == DW_TAG_template_value_param) | |
8581 | { | |
8582 | templ_func = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
8583 | struct template_symbol); | |
8584 | templ_func->base.is_cplus_template_function = 1; | |
8585 | break; | |
8586 | } | |
8587 | } | |
8588 | ||
c906108c | 8589 | new = push_context (0, lowpc); |
34eaf542 TT |
8590 | new->name = new_symbol_full (die, read_type_die (die, cu), cu, |
8591 | (struct symbol *) templ_func); | |
4c2df51b | 8592 | |
4cecd739 DJ |
8593 | /* If there is a location expression for DW_AT_frame_base, record |
8594 | it. */ | |
e142c38c | 8595 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 8596 | if (attr) |
c034e007 AC |
8597 | /* FIXME: cagney/2004-01-26: The DW_AT_frame_base's location |
8598 | expression is being recorded directly in the function's symbol | |
8599 | and not in a separate frame-base object. I guess this hack is | |
8600 | to avoid adding some sort of frame-base adjunct/annex to the | |
8601 | function's symbol :-(. The problem with doing this is that it | |
8602 | results in a function symbol with a location expression that | |
8603 | has nothing to do with the location of the function, ouch! The | |
8604 | relationship should be: a function's symbol has-a frame base; a | |
8605 | frame-base has-a location expression. */ | |
e7c27a73 | 8606 | dwarf2_symbol_mark_computed (attr, new->name, cu); |
4c2df51b | 8607 | |
e142c38c | 8608 | cu->list_in_scope = &local_symbols; |
c906108c | 8609 | |
639d11d3 | 8610 | if (die->child != NULL) |
c906108c | 8611 | { |
639d11d3 | 8612 | child_die = die->child; |
c906108c SS |
8613 | while (child_die && child_die->tag) |
8614 | { | |
34eaf542 TT |
8615 | if (child_die->tag == DW_TAG_template_type_param |
8616 | || child_die->tag == DW_TAG_template_value_param) | |
8617 | { | |
8618 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
8619 | ||
f1078f66 DJ |
8620 | if (arg != NULL) |
8621 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
8622 | } |
8623 | else | |
8624 | process_die (child_die, cu); | |
c906108c SS |
8625 | child_die = sibling_die (child_die); |
8626 | } | |
8627 | } | |
8628 | ||
d389af10 JK |
8629 | inherit_abstract_dies (die, cu); |
8630 | ||
4a811a97 UW |
8631 | /* If we have a DW_AT_specification, we might need to import using |
8632 | directives from the context of the specification DIE. See the | |
8633 | comment in determine_prefix. */ | |
8634 | if (cu->language == language_cplus | |
8635 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
8636 | { | |
8637 | struct dwarf2_cu *spec_cu = cu; | |
8638 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
8639 | ||
8640 | while (spec_die) | |
8641 | { | |
8642 | child_die = spec_die->child; | |
8643 | while (child_die && child_die->tag) | |
8644 | { | |
8645 | if (child_die->tag == DW_TAG_imported_module) | |
8646 | process_die (child_die, spec_cu); | |
8647 | child_die = sibling_die (child_die); | |
8648 | } | |
8649 | ||
8650 | /* In some cases, GCC generates specification DIEs that | |
8651 | themselves contain DW_AT_specification attributes. */ | |
8652 | spec_die = die_specification (spec_die, &spec_cu); | |
8653 | } | |
8654 | } | |
8655 | ||
c906108c SS |
8656 | new = pop_context (); |
8657 | /* Make a block for the local symbols within. */ | |
801e3a5b JB |
8658 | block = finish_block (new->name, &local_symbols, new->old_blocks, |
8659 | lowpc, highpc, objfile); | |
8660 | ||
df8a16a1 | 8661 | /* For C++, set the block's scope. */ |
f55ee35c | 8662 | if (cu->language == language_cplus || cu->language == language_fortran) |
df8a16a1 | 8663 | cp_set_block_scope (new->name, block, &objfile->objfile_obstack, |
0114d602 | 8664 | determine_prefix (die, cu), |
df8a16a1 DJ |
8665 | processing_has_namespace_info); |
8666 | ||
801e3a5b JB |
8667 | /* If we have address ranges, record them. */ |
8668 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 8669 | |
34eaf542 TT |
8670 | /* Attach template arguments to function. */ |
8671 | if (! VEC_empty (symbolp, template_args)) | |
8672 | { | |
8673 | gdb_assert (templ_func != NULL); | |
8674 | ||
8675 | templ_func->n_template_arguments = VEC_length (symbolp, template_args); | |
8676 | templ_func->template_arguments | |
8677 | = obstack_alloc (&objfile->objfile_obstack, | |
8678 | (templ_func->n_template_arguments | |
8679 | * sizeof (struct symbol *))); | |
8680 | memcpy (templ_func->template_arguments, | |
8681 | VEC_address (symbolp, template_args), | |
8682 | (templ_func->n_template_arguments * sizeof (struct symbol *))); | |
8683 | VEC_free (symbolp, template_args); | |
8684 | } | |
8685 | ||
208d8187 JB |
8686 | /* In C++, we can have functions nested inside functions (e.g., when |
8687 | a function declares a class that has methods). This means that | |
8688 | when we finish processing a function scope, we may need to go | |
8689 | back to building a containing block's symbol lists. */ | |
8690 | local_symbols = new->locals; | |
8691 | param_symbols = new->params; | |
27aa8d6a | 8692 | using_directives = new->using_directives; |
208d8187 | 8693 | |
921e78cf JB |
8694 | /* If we've finished processing a top-level function, subsequent |
8695 | symbols go in the file symbol list. */ | |
8696 | if (outermost_context_p ()) | |
e142c38c | 8697 | cu->list_in_scope = &file_symbols; |
c906108c SS |
8698 | } |
8699 | ||
8700 | /* Process all the DIES contained within a lexical block scope. Start | |
8701 | a new scope, process the dies, and then close the scope. */ | |
8702 | ||
8703 | static void | |
e7c27a73 | 8704 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 8705 | { |
e7c27a73 | 8706 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 8707 | struct context_stack *new; |
c906108c SS |
8708 | CORE_ADDR lowpc, highpc; |
8709 | struct die_info *child_die; | |
e142c38c DJ |
8710 | CORE_ADDR baseaddr; |
8711 | ||
8712 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
8713 | |
8714 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
8715 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
8716 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 8717 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 8718 | describe ranges. */ |
d85a05f0 | 8719 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
c906108c SS |
8720 | return; |
8721 | lowpc += baseaddr; | |
8722 | highpc += baseaddr; | |
8723 | ||
8724 | push_context (0, lowpc); | |
639d11d3 | 8725 | if (die->child != NULL) |
c906108c | 8726 | { |
639d11d3 | 8727 | child_die = die->child; |
c906108c SS |
8728 | while (child_die && child_die->tag) |
8729 | { | |
e7c27a73 | 8730 | process_die (child_die, cu); |
c906108c SS |
8731 | child_die = sibling_die (child_die); |
8732 | } | |
8733 | } | |
8734 | new = pop_context (); | |
8735 | ||
8540c487 | 8736 | if (local_symbols != NULL || using_directives != NULL) |
c906108c | 8737 | { |
801e3a5b JB |
8738 | struct block *block |
8739 | = finish_block (0, &local_symbols, new->old_blocks, new->start_addr, | |
8740 | highpc, objfile); | |
8741 | ||
8742 | /* Note that recording ranges after traversing children, as we | |
8743 | do here, means that recording a parent's ranges entails | |
8744 | walking across all its children's ranges as they appear in | |
8745 | the address map, which is quadratic behavior. | |
8746 | ||
8747 | It would be nicer to record the parent's ranges before | |
8748 | traversing its children, simply overriding whatever you find | |
8749 | there. But since we don't even decide whether to create a | |
8750 | block until after we've traversed its children, that's hard | |
8751 | to do. */ | |
8752 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c SS |
8753 | } |
8754 | local_symbols = new->locals; | |
27aa8d6a | 8755 | using_directives = new->using_directives; |
c906108c SS |
8756 | } |
8757 | ||
96408a79 SA |
8758 | /* Read in DW_TAG_GNU_call_site and insert it to CU->call_site_htab. */ |
8759 | ||
8760 | static void | |
8761 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
8762 | { | |
8763 | struct objfile *objfile = cu->objfile; | |
8764 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
8765 | CORE_ADDR pc, baseaddr; | |
8766 | struct attribute *attr; | |
8767 | struct call_site *call_site, call_site_local; | |
8768 | void **slot; | |
8769 | int nparams; | |
8770 | struct die_info *child_die; | |
8771 | ||
8772 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
8773 | ||
8774 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
8775 | if (!attr) | |
8776 | { | |
8777 | complaint (&symfile_complaints, | |
8778 | _("missing DW_AT_low_pc for DW_TAG_GNU_call_site " | |
8779 | "DIE 0x%x [in module %s]"), | |
b64f50a1 | 8780 | die->offset.sect_off, objfile->name); |
96408a79 SA |
8781 | return; |
8782 | } | |
8783 | pc = DW_ADDR (attr) + baseaddr; | |
8784 | ||
8785 | if (cu->call_site_htab == NULL) | |
8786 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
8787 | NULL, &objfile->objfile_obstack, | |
8788 | hashtab_obstack_allocate, NULL); | |
8789 | call_site_local.pc = pc; | |
8790 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
8791 | if (*slot != NULL) | |
8792 | { | |
8793 | complaint (&symfile_complaints, | |
8794 | _("Duplicate PC %s for DW_TAG_GNU_call_site " | |
8795 | "DIE 0x%x [in module %s]"), | |
b64f50a1 | 8796 | paddress (gdbarch, pc), die->offset.sect_off, objfile->name); |
96408a79 SA |
8797 | return; |
8798 | } | |
8799 | ||
8800 | /* Count parameters at the caller. */ | |
8801 | ||
8802 | nparams = 0; | |
8803 | for (child_die = die->child; child_die && child_die->tag; | |
8804 | child_die = sibling_die (child_die)) | |
8805 | { | |
8806 | if (child_die->tag != DW_TAG_GNU_call_site_parameter) | |
8807 | { | |
8808 | complaint (&symfile_complaints, | |
8809 | _("Tag %d is not DW_TAG_GNU_call_site_parameter in " | |
8810 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
b64f50a1 | 8811 | child_die->tag, child_die->offset.sect_off, objfile->name); |
96408a79 SA |
8812 | continue; |
8813 | } | |
8814 | ||
8815 | nparams++; | |
8816 | } | |
8817 | ||
8818 | call_site = obstack_alloc (&objfile->objfile_obstack, | |
8819 | (sizeof (*call_site) | |
8820 | + (sizeof (*call_site->parameter) | |
8821 | * (nparams - 1)))); | |
8822 | *slot = call_site; | |
8823 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
8824 | call_site->pc = pc; | |
8825 | ||
8826 | if (dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
8827 | { | |
8828 | struct die_info *func_die; | |
8829 | ||
8830 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
8831 | for (func_die = die->parent; | |
8832 | func_die && func_die->tag != DW_TAG_subprogram | |
8833 | && func_die->tag != DW_TAG_subroutine_type; | |
8834 | func_die = func_die->parent); | |
8835 | ||
8836 | /* DW_AT_GNU_all_call_sites is a superset | |
8837 | of DW_AT_GNU_all_tail_call_sites. */ | |
8838 | if (func_die | |
8839 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) | |
8840 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) | |
8841 | { | |
8842 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
8843 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
8844 | both the initial caller containing the real return address PC and | |
8845 | the final callee containing the current PC of a chain of tail | |
8846 | calls do not need to have the tail call list complete. But any | |
8847 | function candidate for a virtual tail call frame searched via | |
8848 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
8849 | determined unambiguously. */ | |
8850 | } | |
8851 | else | |
8852 | { | |
8853 | struct type *func_type = NULL; | |
8854 | ||
8855 | if (func_die) | |
8856 | func_type = get_die_type (func_die, cu); | |
8857 | if (func_type != NULL) | |
8858 | { | |
8859 | gdb_assert (TYPE_CODE (func_type) == TYPE_CODE_FUNC); | |
8860 | ||
8861 | /* Enlist this call site to the function. */ | |
8862 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
8863 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
8864 | } | |
8865 | else | |
8866 | complaint (&symfile_complaints, | |
8867 | _("Cannot find function owning DW_TAG_GNU_call_site " | |
8868 | "DIE 0x%x [in module %s]"), | |
b64f50a1 | 8869 | die->offset.sect_off, objfile->name); |
96408a79 SA |
8870 | } |
8871 | } | |
8872 | ||
8873 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
8874 | if (attr == NULL) | |
8875 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
8876 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); | |
8877 | if (!attr || (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0)) | |
8878 | /* Keep NULL DWARF_BLOCK. */; | |
8879 | else if (attr_form_is_block (attr)) | |
8880 | { | |
8881 | struct dwarf2_locexpr_baton *dlbaton; | |
8882 | ||
8883 | dlbaton = obstack_alloc (&objfile->objfile_obstack, sizeof (*dlbaton)); | |
8884 | dlbaton->data = DW_BLOCK (attr)->data; | |
8885 | dlbaton->size = DW_BLOCK (attr)->size; | |
8886 | dlbaton->per_cu = cu->per_cu; | |
8887 | ||
8888 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
8889 | } | |
8890 | else if (is_ref_attr (attr)) | |
8891 | { | |
96408a79 SA |
8892 | struct dwarf2_cu *target_cu = cu; |
8893 | struct die_info *target_die; | |
8894 | ||
8895 | target_die = follow_die_ref_or_sig (die, attr, &target_cu); | |
8896 | gdb_assert (target_cu->objfile == objfile); | |
8897 | if (die_is_declaration (target_die, target_cu)) | |
8898 | { | |
8899 | const char *target_physname; | |
8900 | ||
8901 | target_physname = dwarf2_physname (NULL, target_die, target_cu); | |
8902 | if (target_physname == NULL) | |
8903 | complaint (&symfile_complaints, | |
8904 | _("DW_AT_GNU_call_site_target target DIE has invalid " | |
8905 | "physname, for referencing DIE 0x%x [in module %s]"), | |
b64f50a1 | 8906 | die->offset.sect_off, objfile->name); |
96408a79 SA |
8907 | else |
8908 | SET_FIELD_PHYSNAME (call_site->target, (char *) target_physname); | |
8909 | } | |
8910 | else | |
8911 | { | |
8912 | CORE_ADDR lowpc; | |
8913 | ||
8914 | /* DW_AT_entry_pc should be preferred. */ | |
8915 | if (!dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL)) | |
8916 | complaint (&symfile_complaints, | |
8917 | _("DW_AT_GNU_call_site_target target DIE has invalid " | |
8918 | "low pc, for referencing DIE 0x%x [in module %s]"), | |
b64f50a1 | 8919 | die->offset.sect_off, objfile->name); |
96408a79 SA |
8920 | else |
8921 | SET_FIELD_PHYSADDR (call_site->target, lowpc + baseaddr); | |
8922 | } | |
8923 | } | |
8924 | else | |
8925 | complaint (&symfile_complaints, | |
8926 | _("DW_TAG_GNU_call_site DW_AT_GNU_call_site_target is neither " | |
8927 | "block nor reference, for DIE 0x%x [in module %s]"), | |
b64f50a1 | 8928 | die->offset.sect_off, objfile->name); |
96408a79 SA |
8929 | |
8930 | call_site->per_cu = cu->per_cu; | |
8931 | ||
8932 | for (child_die = die->child; | |
8933 | child_die && child_die->tag; | |
8934 | child_die = sibling_die (child_die)) | |
8935 | { | |
96408a79 | 8936 | struct call_site_parameter *parameter; |
1788b2d3 | 8937 | struct attribute *loc, *origin; |
96408a79 SA |
8938 | |
8939 | if (child_die->tag != DW_TAG_GNU_call_site_parameter) | |
8940 | { | |
8941 | /* Already printed the complaint above. */ | |
8942 | continue; | |
8943 | } | |
8944 | ||
8945 | gdb_assert (call_site->parameter_count < nparams); | |
8946 | parameter = &call_site->parameter[call_site->parameter_count]; | |
8947 | ||
1788b2d3 JK |
8948 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
8949 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
8950 | register is contained in DW_AT_GNU_call_site_value. */ | |
96408a79 | 8951 | |
24c5c679 | 8952 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
1788b2d3 JK |
8953 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); |
8954 | if (loc == NULL && origin != NULL && is_ref_attr (origin)) | |
8955 | { | |
8956 | sect_offset offset; | |
8957 | ||
8958 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; | |
8959 | offset = dwarf2_get_ref_die_offset (origin); | |
d76b7dbc JK |
8960 | if (!offset_in_cu_p (&cu->header, offset)) |
8961 | { | |
8962 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
8963 | binding can be done only inside one CU. Such referenced DIE | |
8964 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
8965 | complaint (&symfile_complaints, | |
8966 | _("DW_AT_abstract_origin offset is not in CU for " | |
8967 | "DW_TAG_GNU_call_site child DIE 0x%x " | |
8968 | "[in module %s]"), | |
8969 | child_die->offset.sect_off, objfile->name); | |
8970 | continue; | |
8971 | } | |
1788b2d3 JK |
8972 | parameter->u.param_offset.cu_off = (offset.sect_off |
8973 | - cu->header.offset.sect_off); | |
8974 | } | |
8975 | else if (loc == NULL || origin != NULL || !attr_form_is_block (loc)) | |
96408a79 SA |
8976 | { |
8977 | complaint (&symfile_complaints, | |
8978 | _("No DW_FORM_block* DW_AT_location for " | |
8979 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
b64f50a1 | 8980 | child_die->offset.sect_off, objfile->name); |
96408a79 SA |
8981 | continue; |
8982 | } | |
24c5c679 | 8983 | else |
96408a79 | 8984 | { |
24c5c679 JK |
8985 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
8986 | (DW_BLOCK (loc)->data, &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size]); | |
8987 | if (parameter->u.dwarf_reg != -1) | |
8988 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
8989 | else if (dwarf_block_to_sp_offset (gdbarch, DW_BLOCK (loc)->data, | |
8990 | &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size], | |
8991 | ¶meter->u.fb_offset)) | |
8992 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
8993 | else | |
8994 | { | |
8995 | complaint (&symfile_complaints, | |
8996 | _("Only single DW_OP_reg or DW_OP_fbreg is supported " | |
8997 | "for DW_FORM_block* DW_AT_location is supported for " | |
8998 | "DW_TAG_GNU_call_site child DIE 0x%x " | |
8999 | "[in module %s]"), | |
9000 | child_die->offset.sect_off, objfile->name); | |
9001 | continue; | |
9002 | } | |
96408a79 SA |
9003 | } |
9004 | ||
9005 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
9006 | if (!attr_form_is_block (attr)) | |
9007 | { | |
9008 | complaint (&symfile_complaints, | |
9009 | _("No DW_FORM_block* DW_AT_GNU_call_site_value for " | |
9010 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
b64f50a1 | 9011 | child_die->offset.sect_off, objfile->name); |
96408a79 SA |
9012 | continue; |
9013 | } | |
9014 | parameter->value = DW_BLOCK (attr)->data; | |
9015 | parameter->value_size = DW_BLOCK (attr)->size; | |
9016 | ||
9017 | /* Parameters are not pre-cleared by memset above. */ | |
9018 | parameter->data_value = NULL; | |
9019 | parameter->data_value_size = 0; | |
9020 | call_site->parameter_count++; | |
9021 | ||
9022 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
9023 | if (attr) | |
9024 | { | |
9025 | if (!attr_form_is_block (attr)) | |
9026 | complaint (&symfile_complaints, | |
9027 | _("No DW_FORM_block* DW_AT_GNU_call_site_data_value for " | |
9028 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
b64f50a1 | 9029 | child_die->offset.sect_off, objfile->name); |
96408a79 SA |
9030 | else |
9031 | { | |
9032 | parameter->data_value = DW_BLOCK (attr)->data; | |
9033 | parameter->data_value_size = DW_BLOCK (attr)->size; | |
9034 | } | |
9035 | } | |
9036 | } | |
9037 | } | |
9038 | ||
43039443 | 9039 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. |
ff013f42 JK |
9040 | Return 1 if the attributes are present and valid, otherwise, return 0. |
9041 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
43039443 JK |
9042 | |
9043 | static int | |
9044 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
ff013f42 JK |
9045 | CORE_ADDR *high_return, struct dwarf2_cu *cu, |
9046 | struct partial_symtab *ranges_pst) | |
43039443 JK |
9047 | { |
9048 | struct objfile *objfile = cu->objfile; | |
9049 | struct comp_unit_head *cu_header = &cu->header; | |
9050 | bfd *obfd = objfile->obfd; | |
9051 | unsigned int addr_size = cu_header->addr_size; | |
9052 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
9053 | /* Base address selection entry. */ | |
9054 | CORE_ADDR base; | |
9055 | int found_base; | |
9056 | unsigned int dummy; | |
9057 | gdb_byte *buffer; | |
9058 | CORE_ADDR marker; | |
9059 | int low_set; | |
9060 | CORE_ADDR low = 0; | |
9061 | CORE_ADDR high = 0; | |
ff013f42 | 9062 | CORE_ADDR baseaddr; |
43039443 | 9063 | |
d00adf39 DE |
9064 | found_base = cu->base_known; |
9065 | base = cu->base_address; | |
43039443 | 9066 | |
be391dca | 9067 | dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges); |
dce234bc | 9068 | if (offset >= dwarf2_per_objfile->ranges.size) |
43039443 JK |
9069 | { |
9070 | complaint (&symfile_complaints, | |
9071 | _("Offset %d out of bounds for DW_AT_ranges attribute"), | |
9072 | offset); | |
9073 | return 0; | |
9074 | } | |
dce234bc | 9075 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
43039443 JK |
9076 | |
9077 | /* Read in the largest possible address. */ | |
9078 | marker = read_address (obfd, buffer, cu, &dummy); | |
9079 | if ((marker & mask) == mask) | |
9080 | { | |
9081 | /* If we found the largest possible address, then | |
9082 | read the base address. */ | |
9083 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
9084 | buffer += 2 * addr_size; | |
9085 | offset += 2 * addr_size; | |
9086 | found_base = 1; | |
9087 | } | |
9088 | ||
9089 | low_set = 0; | |
9090 | ||
e7030f15 | 9091 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
ff013f42 | 9092 | |
43039443 JK |
9093 | while (1) |
9094 | { | |
9095 | CORE_ADDR range_beginning, range_end; | |
9096 | ||
9097 | range_beginning = read_address (obfd, buffer, cu, &dummy); | |
9098 | buffer += addr_size; | |
9099 | range_end = read_address (obfd, buffer, cu, &dummy); | |
9100 | buffer += addr_size; | |
9101 | offset += 2 * addr_size; | |
9102 | ||
9103 | /* An end of list marker is a pair of zero addresses. */ | |
9104 | if (range_beginning == 0 && range_end == 0) | |
9105 | /* Found the end of list entry. */ | |
9106 | break; | |
9107 | ||
9108 | /* Each base address selection entry is a pair of 2 values. | |
9109 | The first is the largest possible address, the second is | |
9110 | the base address. Check for a base address here. */ | |
9111 | if ((range_beginning & mask) == mask) | |
9112 | { | |
9113 | /* If we found the largest possible address, then | |
9114 | read the base address. */ | |
9115 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
9116 | found_base = 1; | |
9117 | continue; | |
9118 | } | |
9119 | ||
9120 | if (!found_base) | |
9121 | { | |
9122 | /* We have no valid base address for the ranges | |
9123 | data. */ | |
9124 | complaint (&symfile_complaints, | |
9125 | _("Invalid .debug_ranges data (no base address)")); | |
9126 | return 0; | |
9127 | } | |
9128 | ||
9277c30c UW |
9129 | if (range_beginning > range_end) |
9130 | { | |
9131 | /* Inverted range entries are invalid. */ | |
9132 | complaint (&symfile_complaints, | |
9133 | _("Invalid .debug_ranges data (inverted range)")); | |
9134 | return 0; | |
9135 | } | |
9136 | ||
9137 | /* Empty range entries have no effect. */ | |
9138 | if (range_beginning == range_end) | |
9139 | continue; | |
9140 | ||
43039443 JK |
9141 | range_beginning += base; |
9142 | range_end += base; | |
9143 | ||
9277c30c | 9144 | if (ranges_pst != NULL) |
ff013f42 | 9145 | addrmap_set_empty (objfile->psymtabs_addrmap, |
3e43a32a MS |
9146 | range_beginning + baseaddr, |
9147 | range_end - 1 + baseaddr, | |
ff013f42 JK |
9148 | ranges_pst); |
9149 | ||
43039443 JK |
9150 | /* FIXME: This is recording everything as a low-high |
9151 | segment of consecutive addresses. We should have a | |
9152 | data structure for discontiguous block ranges | |
9153 | instead. */ | |
9154 | if (! low_set) | |
9155 | { | |
9156 | low = range_beginning; | |
9157 | high = range_end; | |
9158 | low_set = 1; | |
9159 | } | |
9160 | else | |
9161 | { | |
9162 | if (range_beginning < low) | |
9163 | low = range_beginning; | |
9164 | if (range_end > high) | |
9165 | high = range_end; | |
9166 | } | |
9167 | } | |
9168 | ||
9169 | if (! low_set) | |
9170 | /* If the first entry is an end-of-list marker, the range | |
9171 | describes an empty scope, i.e. no instructions. */ | |
9172 | return 0; | |
9173 | ||
9174 | if (low_return) | |
9175 | *low_return = low; | |
9176 | if (high_return) | |
9177 | *high_return = high; | |
9178 | return 1; | |
9179 | } | |
9180 | ||
af34e669 DJ |
9181 | /* Get low and high pc attributes from a die. Return 1 if the attributes |
9182 | are present and valid, otherwise, return 0. Return -1 if the range is | |
9183 | discontinuous, i.e. derived from DW_AT_ranges information. */ | |
380bca97 | 9184 | |
c906108c | 9185 | static int |
af34e669 | 9186 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 DJ |
9187 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
9188 | struct partial_symtab *pst) | |
c906108c SS |
9189 | { |
9190 | struct attribute *attr; | |
91da1414 | 9191 | struct attribute *attr_high; |
af34e669 DJ |
9192 | CORE_ADDR low = 0; |
9193 | CORE_ADDR high = 0; | |
9194 | int ret = 0; | |
c906108c | 9195 | |
91da1414 MW |
9196 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
9197 | if (attr_high) | |
af34e669 | 9198 | { |
e142c38c | 9199 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 | 9200 | if (attr) |
91da1414 MW |
9201 | { |
9202 | low = DW_ADDR (attr); | |
3019eac3 DE |
9203 | if (attr_high->form == DW_FORM_addr |
9204 | || attr_high->form == DW_FORM_GNU_addr_index) | |
91da1414 MW |
9205 | high = DW_ADDR (attr_high); |
9206 | else | |
9207 | high = low + DW_UNSND (attr_high); | |
9208 | } | |
af34e669 DJ |
9209 | else |
9210 | /* Found high w/o low attribute. */ | |
9211 | return 0; | |
9212 | ||
9213 | /* Found consecutive range of addresses. */ | |
9214 | ret = 1; | |
9215 | } | |
c906108c | 9216 | else |
af34e669 | 9217 | { |
e142c38c | 9218 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
9219 | if (attr != NULL) |
9220 | { | |
2e3cf129 DE |
9221 | unsigned int ranges_offset = DW_UNSND (attr) + cu->ranges_base; |
9222 | ||
af34e669 | 9223 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 9224 | .debug_ranges section. */ |
2e3cf129 | 9225 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst)) |
af34e669 | 9226 | return 0; |
43039443 | 9227 | /* Found discontinuous range of addresses. */ |
af34e669 DJ |
9228 | ret = -1; |
9229 | } | |
9230 | } | |
c906108c | 9231 | |
9373cf26 JK |
9232 | /* read_partial_die has also the strict LOW < HIGH requirement. */ |
9233 | if (high <= low) | |
c906108c SS |
9234 | return 0; |
9235 | ||
9236 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
9237 | eliminate duplicate copies of functions and vtables and such. | |
9238 | The linker will arbitrarily choose one and discard the others. | |
9239 | The AT_*_pc values for such functions refer to local labels in | |
9240 | these sections. If the section from that file was discarded, the | |
9241 | labels are not in the output, so the relocs get a value of 0. | |
9242 | If this is a discarded function, mark the pc bounds as invalid, | |
9243 | so that GDB will ignore it. */ | |
72dca2f5 | 9244 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
c906108c SS |
9245 | return 0; |
9246 | ||
9247 | *lowpc = low; | |
96408a79 SA |
9248 | if (highpc) |
9249 | *highpc = high; | |
af34e669 | 9250 | return ret; |
c906108c SS |
9251 | } |
9252 | ||
b084d499 JB |
9253 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
9254 | its low and high PC addresses. Do nothing if these addresses could not | |
9255 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
9256 | and HIGHPC to the high address if greater than HIGHPC. */ | |
9257 | ||
9258 | static void | |
9259 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
9260 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
9261 | struct dwarf2_cu *cu) | |
9262 | { | |
9263 | CORE_ADDR low, high; | |
9264 | struct die_info *child = die->child; | |
9265 | ||
d85a05f0 | 9266 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL)) |
b084d499 JB |
9267 | { |
9268 | *lowpc = min (*lowpc, low); | |
9269 | *highpc = max (*highpc, high); | |
9270 | } | |
9271 | ||
9272 | /* If the language does not allow nested subprograms (either inside | |
9273 | subprograms or lexical blocks), we're done. */ | |
9274 | if (cu->language != language_ada) | |
9275 | return; | |
6e70227d | 9276 | |
b084d499 JB |
9277 | /* Check all the children of the given DIE. If it contains nested |
9278 | subprograms, then check their pc bounds. Likewise, we need to | |
9279 | check lexical blocks as well, as they may also contain subprogram | |
9280 | definitions. */ | |
9281 | while (child && child->tag) | |
9282 | { | |
9283 | if (child->tag == DW_TAG_subprogram | |
9284 | || child->tag == DW_TAG_lexical_block) | |
9285 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
9286 | child = sibling_die (child); | |
9287 | } | |
9288 | } | |
9289 | ||
fae299cd DC |
9290 | /* Get the low and high pc's represented by the scope DIE, and store |
9291 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
9292 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
9293 | ||
9294 | static void | |
9295 | get_scope_pc_bounds (struct die_info *die, | |
9296 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
9297 | struct dwarf2_cu *cu) | |
9298 | { | |
9299 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
9300 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
9301 | CORE_ADDR current_low, current_high; | |
9302 | ||
d85a05f0 | 9303 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL)) |
fae299cd DC |
9304 | { |
9305 | best_low = current_low; | |
9306 | best_high = current_high; | |
9307 | } | |
9308 | else | |
9309 | { | |
9310 | struct die_info *child = die->child; | |
9311 | ||
9312 | while (child && child->tag) | |
9313 | { | |
9314 | switch (child->tag) { | |
9315 | case DW_TAG_subprogram: | |
b084d499 | 9316 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
9317 | break; |
9318 | case DW_TAG_namespace: | |
f55ee35c | 9319 | case DW_TAG_module: |
fae299cd DC |
9320 | /* FIXME: carlton/2004-01-16: Should we do this for |
9321 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
9322 | that current GCC's always emit the DIEs corresponding | |
9323 | to definitions of methods of classes as children of a | |
9324 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
9325 | the DIEs giving the declarations, which could be | |
9326 | anywhere). But I don't see any reason why the | |
9327 | standards says that they have to be there. */ | |
9328 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
9329 | ||
9330 | if (current_low != ((CORE_ADDR) -1)) | |
9331 | { | |
9332 | best_low = min (best_low, current_low); | |
9333 | best_high = max (best_high, current_high); | |
9334 | } | |
9335 | break; | |
9336 | default: | |
0963b4bd | 9337 | /* Ignore. */ |
fae299cd DC |
9338 | break; |
9339 | } | |
9340 | ||
9341 | child = sibling_die (child); | |
9342 | } | |
9343 | } | |
9344 | ||
9345 | *lowpc = best_low; | |
9346 | *highpc = best_high; | |
9347 | } | |
9348 | ||
801e3a5b JB |
9349 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
9350 | in DIE. */ | |
380bca97 | 9351 | |
801e3a5b JB |
9352 | static void |
9353 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
9354 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
9355 | { | |
bb5ed363 | 9356 | struct objfile *objfile = cu->objfile; |
801e3a5b | 9357 | struct attribute *attr; |
91da1414 | 9358 | struct attribute *attr_high; |
801e3a5b | 9359 | |
91da1414 MW |
9360 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
9361 | if (attr_high) | |
801e3a5b | 9362 | { |
801e3a5b JB |
9363 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
9364 | if (attr) | |
9365 | { | |
9366 | CORE_ADDR low = DW_ADDR (attr); | |
91da1414 | 9367 | CORE_ADDR high; |
3019eac3 DE |
9368 | if (attr_high->form == DW_FORM_addr |
9369 | || attr_high->form == DW_FORM_GNU_addr_index) | |
91da1414 MW |
9370 | high = DW_ADDR (attr_high); |
9371 | else | |
9372 | high = low + DW_UNSND (attr_high); | |
9a619af0 | 9373 | |
801e3a5b JB |
9374 | record_block_range (block, baseaddr + low, baseaddr + high - 1); |
9375 | } | |
9376 | } | |
9377 | ||
9378 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
9379 | if (attr) | |
9380 | { | |
bb5ed363 | 9381 | bfd *obfd = objfile->obfd; |
801e3a5b JB |
9382 | |
9383 | /* The value of the DW_AT_ranges attribute is the offset of the | |
9384 | address range list in the .debug_ranges section. */ | |
2e3cf129 | 9385 | unsigned long offset = DW_UNSND (attr) + cu->ranges_base; |
dce234bc | 9386 | gdb_byte *buffer = dwarf2_per_objfile->ranges.buffer + offset; |
801e3a5b JB |
9387 | |
9388 | /* For some target architectures, but not others, the | |
9389 | read_address function sign-extends the addresses it returns. | |
9390 | To recognize base address selection entries, we need a | |
9391 | mask. */ | |
9392 | unsigned int addr_size = cu->header.addr_size; | |
9393 | CORE_ADDR base_select_mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
9394 | ||
9395 | /* The base address, to which the next pair is relative. Note | |
9396 | that this 'base' is a DWARF concept: most entries in a range | |
9397 | list are relative, to reduce the number of relocs against the | |
9398 | debugging information. This is separate from this function's | |
9399 | 'baseaddr' argument, which GDB uses to relocate debugging | |
9400 | information from a shared library based on the address at | |
9401 | which the library was loaded. */ | |
d00adf39 DE |
9402 | CORE_ADDR base = cu->base_address; |
9403 | int base_known = cu->base_known; | |
801e3a5b | 9404 | |
be391dca | 9405 | gdb_assert (dwarf2_per_objfile->ranges.readin); |
dce234bc | 9406 | if (offset >= dwarf2_per_objfile->ranges.size) |
801e3a5b JB |
9407 | { |
9408 | complaint (&symfile_complaints, | |
9409 | _("Offset %lu out of bounds for DW_AT_ranges attribute"), | |
9410 | offset); | |
9411 | return; | |
9412 | } | |
9413 | ||
9414 | for (;;) | |
9415 | { | |
9416 | unsigned int bytes_read; | |
9417 | CORE_ADDR start, end; | |
9418 | ||
9419 | start = read_address (obfd, buffer, cu, &bytes_read); | |
9420 | buffer += bytes_read; | |
9421 | end = read_address (obfd, buffer, cu, &bytes_read); | |
9422 | buffer += bytes_read; | |
9423 | ||
9424 | /* Did we find the end of the range list? */ | |
9425 | if (start == 0 && end == 0) | |
9426 | break; | |
9427 | ||
9428 | /* Did we find a base address selection entry? */ | |
9429 | else if ((start & base_select_mask) == base_select_mask) | |
9430 | { | |
9431 | base = end; | |
9432 | base_known = 1; | |
9433 | } | |
9434 | ||
9435 | /* We found an ordinary address range. */ | |
9436 | else | |
9437 | { | |
9438 | if (!base_known) | |
9439 | { | |
9440 | complaint (&symfile_complaints, | |
3e43a32a MS |
9441 | _("Invalid .debug_ranges data " |
9442 | "(no base address)")); | |
801e3a5b JB |
9443 | return; |
9444 | } | |
9445 | ||
9277c30c UW |
9446 | if (start > end) |
9447 | { | |
9448 | /* Inverted range entries are invalid. */ | |
9449 | complaint (&symfile_complaints, | |
9450 | _("Invalid .debug_ranges data " | |
9451 | "(inverted range)")); | |
9452 | return; | |
9453 | } | |
9454 | ||
9455 | /* Empty range entries have no effect. */ | |
9456 | if (start == end) | |
9457 | continue; | |
9458 | ||
6e70227d DE |
9459 | record_block_range (block, |
9460 | baseaddr + base + start, | |
801e3a5b JB |
9461 | baseaddr + base + end - 1); |
9462 | } | |
9463 | } | |
9464 | } | |
9465 | } | |
9466 | ||
685b1105 JK |
9467 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
9468 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 9469 | |
685b1105 JK |
9470 | static void |
9471 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 JK |
9472 | { |
9473 | const char *cs; | |
9474 | int major, minor, release; | |
9475 | ||
9476 | if (cu->producer == NULL) | |
9477 | { | |
9478 | /* For unknown compilers expect their behavior is DWARF version | |
9479 | compliant. | |
9480 | ||
9481 | GCC started to support .debug_types sections by -gdwarf-4 since | |
9482 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
9483 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
9484 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
9485 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 9486 | } |
685b1105 | 9487 | else if (strncmp (cu->producer, "GNU ", strlen ("GNU ")) == 0) |
60d5a603 | 9488 | { |
685b1105 JK |
9489 | /* Skip any identifier after "GNU " - such as "C++" or "Java". */ |
9490 | ||
ba919b58 TT |
9491 | cs = &cu->producer[strlen ("GNU ")]; |
9492 | while (*cs && !isdigit (*cs)) | |
9493 | cs++; | |
9494 | if (sscanf (cs, "%d.%d.%d", &major, &minor, &release) != 3) | |
9495 | { | |
9496 | /* Not recognized as GCC. */ | |
9497 | } | |
9498 | else | |
685b1105 JK |
9499 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); |
9500 | } | |
9501 | else if (strncmp (cu->producer, "Intel(R) C", strlen ("Intel(R) C")) == 0) | |
9502 | cu->producer_is_icc = 1; | |
9503 | else | |
9504 | { | |
9505 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
9506 | compliant. */ | |
60d5a603 JK |
9507 | } |
9508 | ||
ba919b58 | 9509 | cu->checked_producer = 1; |
685b1105 | 9510 | } |
ba919b58 | 9511 | |
685b1105 JK |
9512 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
9513 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
9514 | during 4.6.0 experimental. */ | |
9515 | ||
9516 | static int | |
9517 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) | |
9518 | { | |
9519 | if (!cu->checked_producer) | |
9520 | check_producer (cu); | |
9521 | ||
9522 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
9523 | } |
9524 | ||
9525 | /* Return the default accessibility type if it is not overriden by | |
9526 | DW_AT_accessibility. */ | |
9527 | ||
9528 | static enum dwarf_access_attribute | |
9529 | dwarf2_default_access_attribute (struct die_info *die, struct dwarf2_cu *cu) | |
9530 | { | |
9531 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) | |
9532 | { | |
9533 | /* The default DWARF 2 accessibility for members is public, the default | |
9534 | accessibility for inheritance is private. */ | |
9535 | ||
9536 | if (die->tag != DW_TAG_inheritance) | |
9537 | return DW_ACCESS_public; | |
9538 | else | |
9539 | return DW_ACCESS_private; | |
9540 | } | |
9541 | else | |
9542 | { | |
9543 | /* DWARF 3+ defines the default accessibility a different way. The same | |
9544 | rules apply now for DW_TAG_inheritance as for the members and it only | |
9545 | depends on the container kind. */ | |
9546 | ||
9547 | if (die->parent->tag == DW_TAG_class_type) | |
9548 | return DW_ACCESS_private; | |
9549 | else | |
9550 | return DW_ACCESS_public; | |
9551 | } | |
9552 | } | |
9553 | ||
74ac6d43 TT |
9554 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
9555 | offset. If the attribute was not found return 0, otherwise return | |
9556 | 1. If it was found but could not properly be handled, set *OFFSET | |
9557 | to 0. */ | |
9558 | ||
9559 | static int | |
9560 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
9561 | LONGEST *offset) | |
9562 | { | |
9563 | struct attribute *attr; | |
9564 | ||
9565 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
9566 | if (attr != NULL) | |
9567 | { | |
9568 | *offset = 0; | |
9569 | ||
9570 | /* Note that we do not check for a section offset first here. | |
9571 | This is because DW_AT_data_member_location is new in DWARF 4, | |
9572 | so if we see it, we can assume that a constant form is really | |
9573 | a constant and not a section offset. */ | |
9574 | if (attr_form_is_constant (attr)) | |
9575 | *offset = dwarf2_get_attr_constant_value (attr, 0); | |
9576 | else if (attr_form_is_section_offset (attr)) | |
9577 | dwarf2_complex_location_expr_complaint (); | |
9578 | else if (attr_form_is_block (attr)) | |
9579 | *offset = decode_locdesc (DW_BLOCK (attr), cu); | |
9580 | else | |
9581 | dwarf2_complex_location_expr_complaint (); | |
9582 | ||
9583 | return 1; | |
9584 | } | |
9585 | ||
9586 | return 0; | |
9587 | } | |
9588 | ||
c906108c SS |
9589 | /* Add an aggregate field to the field list. */ |
9590 | ||
9591 | static void | |
107d2387 | 9592 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 9593 | struct dwarf2_cu *cu) |
6e70227d | 9594 | { |
e7c27a73 | 9595 | struct objfile *objfile = cu->objfile; |
5e2b427d | 9596 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
9597 | struct nextfield *new_field; |
9598 | struct attribute *attr; | |
9599 | struct field *fp; | |
9600 | char *fieldname = ""; | |
9601 | ||
9602 | /* Allocate a new field list entry and link it in. */ | |
9603 | new_field = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 9604 | make_cleanup (xfree, new_field); |
c906108c | 9605 | memset (new_field, 0, sizeof (struct nextfield)); |
7d0ccb61 DJ |
9606 | |
9607 | if (die->tag == DW_TAG_inheritance) | |
9608 | { | |
9609 | new_field->next = fip->baseclasses; | |
9610 | fip->baseclasses = new_field; | |
9611 | } | |
9612 | else | |
9613 | { | |
9614 | new_field->next = fip->fields; | |
9615 | fip->fields = new_field; | |
9616 | } | |
c906108c SS |
9617 | fip->nfields++; |
9618 | ||
e142c38c | 9619 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
9620 | if (attr) |
9621 | new_field->accessibility = DW_UNSND (attr); | |
60d5a603 JK |
9622 | else |
9623 | new_field->accessibility = dwarf2_default_access_attribute (die, cu); | |
c906108c SS |
9624 | if (new_field->accessibility != DW_ACCESS_public) |
9625 | fip->non_public_fields = 1; | |
60d5a603 | 9626 | |
e142c38c | 9627 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
9628 | if (attr) |
9629 | new_field->virtuality = DW_UNSND (attr); | |
60d5a603 JK |
9630 | else |
9631 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
9632 | |
9633 | fp = &new_field->field; | |
a9a9bd0f | 9634 | |
e142c38c | 9635 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 9636 | { |
74ac6d43 TT |
9637 | LONGEST offset; |
9638 | ||
a9a9bd0f | 9639 | /* Data member other than a C++ static data member. */ |
6e70227d | 9640 | |
c906108c | 9641 | /* Get type of field. */ |
e7c27a73 | 9642 | fp->type = die_type (die, cu); |
c906108c | 9643 | |
d6a843b5 | 9644 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 9645 | |
c906108c | 9646 | /* Get bit size of field (zero if none). */ |
e142c38c | 9647 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
9648 | if (attr) |
9649 | { | |
9650 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
9651 | } | |
9652 | else | |
9653 | { | |
9654 | FIELD_BITSIZE (*fp) = 0; | |
9655 | } | |
9656 | ||
9657 | /* Get bit offset of field. */ | |
74ac6d43 TT |
9658 | if (handle_data_member_location (die, cu, &offset)) |
9659 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
e142c38c | 9660 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
9661 | if (attr) |
9662 | { | |
5e2b427d | 9663 | if (gdbarch_bits_big_endian (gdbarch)) |
c906108c SS |
9664 | { |
9665 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
9666 | additional bit offset from the MSB of the containing |
9667 | anonymous object to the MSB of the field. We don't | |
9668 | have to do anything special since we don't need to | |
9669 | know the size of the anonymous object. */ | |
f41f5e61 | 9670 | SET_FIELD_BITPOS (*fp, FIELD_BITPOS (*fp) + DW_UNSND (attr)); |
c906108c SS |
9671 | } |
9672 | else | |
9673 | { | |
9674 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
9675 | MSB of the anonymous object, subtract off the number of |
9676 | bits from the MSB of the field to the MSB of the | |
9677 | object, and then subtract off the number of bits of | |
9678 | the field itself. The result is the bit offset of | |
9679 | the LSB of the field. */ | |
c906108c SS |
9680 | int anonymous_size; |
9681 | int bit_offset = DW_UNSND (attr); | |
9682 | ||
e142c38c | 9683 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
9684 | if (attr) |
9685 | { | |
9686 | /* The size of the anonymous object containing | |
9687 | the bit field is explicit, so use the | |
9688 | indicated size (in bytes). */ | |
9689 | anonymous_size = DW_UNSND (attr); | |
9690 | } | |
9691 | else | |
9692 | { | |
9693 | /* The size of the anonymous object containing | |
9694 | the bit field must be inferred from the type | |
9695 | attribute of the data member containing the | |
9696 | bit field. */ | |
9697 | anonymous_size = TYPE_LENGTH (fp->type); | |
9698 | } | |
f41f5e61 PA |
9699 | SET_FIELD_BITPOS (*fp, |
9700 | (FIELD_BITPOS (*fp) | |
9701 | + anonymous_size * bits_per_byte | |
9702 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
9703 | } |
9704 | } | |
9705 | ||
9706 | /* Get name of field. */ | |
39cbfefa DJ |
9707 | fieldname = dwarf2_name (die, cu); |
9708 | if (fieldname == NULL) | |
9709 | fieldname = ""; | |
d8151005 DJ |
9710 | |
9711 | /* The name is already allocated along with this objfile, so we don't | |
9712 | need to duplicate it for the type. */ | |
9713 | fp->name = fieldname; | |
c906108c SS |
9714 | |
9715 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 9716 | pointer or virtual base class pointer) to private. */ |
e142c38c | 9717 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 9718 | { |
d48cc9dd | 9719 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
9720 | new_field->accessibility = DW_ACCESS_private; |
9721 | fip->non_public_fields = 1; | |
9722 | } | |
9723 | } | |
a9a9bd0f | 9724 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 9725 | { |
a9a9bd0f DC |
9726 | /* C++ static member. */ |
9727 | ||
9728 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
9729 | is a declaration, but all versions of G++ as of this writing | |
9730 | (so through at least 3.2.1) incorrectly generate | |
9731 | DW_TAG_variable tags. */ | |
6e70227d | 9732 | |
ff355380 | 9733 | const char *physname; |
c906108c | 9734 | |
a9a9bd0f | 9735 | /* Get name of field. */ |
39cbfefa DJ |
9736 | fieldname = dwarf2_name (die, cu); |
9737 | if (fieldname == NULL) | |
c906108c SS |
9738 | return; |
9739 | ||
254e6b9e | 9740 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
9741 | if (attr |
9742 | /* Only create a symbol if this is an external value. | |
9743 | new_symbol checks this and puts the value in the global symbol | |
9744 | table, which we want. If it is not external, new_symbol | |
9745 | will try to put the value in cu->list_in_scope which is wrong. */ | |
9746 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
9747 | { |
9748 | /* A static const member, not much different than an enum as far as | |
9749 | we're concerned, except that we can support more types. */ | |
9750 | new_symbol (die, NULL, cu); | |
9751 | } | |
9752 | ||
2df3850c | 9753 | /* Get physical name. */ |
ff355380 | 9754 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 9755 | |
d8151005 DJ |
9756 | /* The name is already allocated along with this objfile, so we don't |
9757 | need to duplicate it for the type. */ | |
9758 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 9759 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 9760 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
9761 | } |
9762 | else if (die->tag == DW_TAG_inheritance) | |
9763 | { | |
74ac6d43 | 9764 | LONGEST offset; |
d4b96c9a | 9765 | |
74ac6d43 TT |
9766 | /* C++ base class field. */ |
9767 | if (handle_data_member_location (die, cu, &offset)) | |
9768 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
c906108c | 9769 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 9770 | FIELD_TYPE (*fp) = die_type (die, cu); |
c906108c SS |
9771 | FIELD_NAME (*fp) = type_name_no_tag (fp->type); |
9772 | fip->nbaseclasses++; | |
9773 | } | |
9774 | } | |
9775 | ||
98751a41 JK |
9776 | /* Add a typedef defined in the scope of the FIP's class. */ |
9777 | ||
9778 | static void | |
9779 | dwarf2_add_typedef (struct field_info *fip, struct die_info *die, | |
9780 | struct dwarf2_cu *cu) | |
6e70227d | 9781 | { |
98751a41 | 9782 | struct objfile *objfile = cu->objfile; |
98751a41 JK |
9783 | struct typedef_field_list *new_field; |
9784 | struct attribute *attr; | |
9785 | struct typedef_field *fp; | |
9786 | char *fieldname = ""; | |
9787 | ||
9788 | /* Allocate a new field list entry and link it in. */ | |
9789 | new_field = xzalloc (sizeof (*new_field)); | |
9790 | make_cleanup (xfree, new_field); | |
9791 | ||
9792 | gdb_assert (die->tag == DW_TAG_typedef); | |
9793 | ||
9794 | fp = &new_field->field; | |
9795 | ||
9796 | /* Get name of field. */ | |
9797 | fp->name = dwarf2_name (die, cu); | |
9798 | if (fp->name == NULL) | |
9799 | return; | |
9800 | ||
9801 | fp->type = read_type_die (die, cu); | |
9802 | ||
9803 | new_field->next = fip->typedef_field_list; | |
9804 | fip->typedef_field_list = new_field; | |
9805 | fip->typedef_field_list_count++; | |
9806 | } | |
9807 | ||
c906108c SS |
9808 | /* Create the vector of fields, and attach it to the type. */ |
9809 | ||
9810 | static void | |
fba45db2 | 9811 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 9812 | struct dwarf2_cu *cu) |
c906108c SS |
9813 | { |
9814 | int nfields = fip->nfields; | |
9815 | ||
9816 | /* Record the field count, allocate space for the array of fields, | |
9817 | and create blank accessibility bitfields if necessary. */ | |
9818 | TYPE_NFIELDS (type) = nfields; | |
9819 | TYPE_FIELDS (type) = (struct field *) | |
9820 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
9821 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
9822 | ||
b4ba55a1 | 9823 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
9824 | { |
9825 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
9826 | ||
9827 | TYPE_FIELD_PRIVATE_BITS (type) = | |
9828 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
9829 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
9830 | ||
9831 | TYPE_FIELD_PROTECTED_BITS (type) = | |
9832 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
9833 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
9834 | ||
774b6a14 TT |
9835 | TYPE_FIELD_IGNORE_BITS (type) = |
9836 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
9837 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
9838 | } |
9839 | ||
9840 | /* If the type has baseclasses, allocate and clear a bit vector for | |
9841 | TYPE_FIELD_VIRTUAL_BITS. */ | |
b4ba55a1 | 9842 | if (fip->nbaseclasses && cu->language != language_ada) |
c906108c SS |
9843 | { |
9844 | int num_bytes = B_BYTES (fip->nbaseclasses); | |
fe1b8b76 | 9845 | unsigned char *pointer; |
c906108c SS |
9846 | |
9847 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
fe1b8b76 JB |
9848 | pointer = TYPE_ALLOC (type, num_bytes); |
9849 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; | |
c906108c SS |
9850 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->nbaseclasses); |
9851 | TYPE_N_BASECLASSES (type) = fip->nbaseclasses; | |
9852 | } | |
9853 | ||
3e43a32a MS |
9854 | /* Copy the saved-up fields into the field vector. Start from the head of |
9855 | the list, adding to the tail of the field array, so that they end up in | |
9856 | the same order in the array in which they were added to the list. */ | |
c906108c SS |
9857 | while (nfields-- > 0) |
9858 | { | |
7d0ccb61 DJ |
9859 | struct nextfield *fieldp; |
9860 | ||
9861 | if (fip->fields) | |
9862 | { | |
9863 | fieldp = fip->fields; | |
9864 | fip->fields = fieldp->next; | |
9865 | } | |
9866 | else | |
9867 | { | |
9868 | fieldp = fip->baseclasses; | |
9869 | fip->baseclasses = fieldp->next; | |
9870 | } | |
9871 | ||
9872 | TYPE_FIELD (type, nfields) = fieldp->field; | |
9873 | switch (fieldp->accessibility) | |
c906108c | 9874 | { |
c5aa993b | 9875 | case DW_ACCESS_private: |
b4ba55a1 JB |
9876 | if (cu->language != language_ada) |
9877 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
c5aa993b | 9878 | break; |
c906108c | 9879 | |
c5aa993b | 9880 | case DW_ACCESS_protected: |
b4ba55a1 JB |
9881 | if (cu->language != language_ada) |
9882 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
c5aa993b | 9883 | break; |
c906108c | 9884 | |
c5aa993b JM |
9885 | case DW_ACCESS_public: |
9886 | break; | |
c906108c | 9887 | |
c5aa993b JM |
9888 | default: |
9889 | /* Unknown accessibility. Complain and treat it as public. */ | |
9890 | { | |
e2e0b3e5 | 9891 | complaint (&symfile_complaints, _("unsupported accessibility %d"), |
7d0ccb61 | 9892 | fieldp->accessibility); |
c5aa993b JM |
9893 | } |
9894 | break; | |
c906108c SS |
9895 | } |
9896 | if (nfields < fip->nbaseclasses) | |
9897 | { | |
7d0ccb61 | 9898 | switch (fieldp->virtuality) |
c906108c | 9899 | { |
c5aa993b JM |
9900 | case DW_VIRTUALITY_virtual: |
9901 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 9902 | if (cu->language == language_ada) |
a73c6dcd | 9903 | error (_("unexpected virtuality in component of Ada type")); |
c5aa993b JM |
9904 | SET_TYPE_FIELD_VIRTUAL (type, nfields); |
9905 | break; | |
c906108c SS |
9906 | } |
9907 | } | |
c906108c SS |
9908 | } |
9909 | } | |
9910 | ||
c906108c SS |
9911 | /* Add a member function to the proper fieldlist. */ |
9912 | ||
9913 | static void | |
107d2387 | 9914 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 9915 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 9916 | { |
e7c27a73 | 9917 | struct objfile *objfile = cu->objfile; |
c906108c SS |
9918 | struct attribute *attr; |
9919 | struct fnfieldlist *flp; | |
9920 | int i; | |
9921 | struct fn_field *fnp; | |
9922 | char *fieldname; | |
c906108c | 9923 | struct nextfnfield *new_fnfield; |
f792889a | 9924 | struct type *this_type; |
60d5a603 | 9925 | enum dwarf_access_attribute accessibility; |
c906108c | 9926 | |
b4ba55a1 | 9927 | if (cu->language == language_ada) |
a73c6dcd | 9928 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 9929 | |
2df3850c | 9930 | /* Get name of member function. */ |
39cbfefa DJ |
9931 | fieldname = dwarf2_name (die, cu); |
9932 | if (fieldname == NULL) | |
2df3850c | 9933 | return; |
c906108c | 9934 | |
c906108c SS |
9935 | /* Look up member function name in fieldlist. */ |
9936 | for (i = 0; i < fip->nfnfields; i++) | |
9937 | { | |
27bfe10e | 9938 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
c906108c SS |
9939 | break; |
9940 | } | |
9941 | ||
9942 | /* Create new list element if necessary. */ | |
9943 | if (i < fip->nfnfields) | |
9944 | flp = &fip->fnfieldlists[i]; | |
9945 | else | |
9946 | { | |
9947 | if ((fip->nfnfields % DW_FIELD_ALLOC_CHUNK) == 0) | |
9948 | { | |
9949 | fip->fnfieldlists = (struct fnfieldlist *) | |
9950 | xrealloc (fip->fnfieldlists, | |
9951 | (fip->nfnfields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 9952 | * sizeof (struct fnfieldlist)); |
c906108c | 9953 | if (fip->nfnfields == 0) |
c13c43fd | 9954 | make_cleanup (free_current_contents, &fip->fnfieldlists); |
c906108c SS |
9955 | } |
9956 | flp = &fip->fnfieldlists[fip->nfnfields]; | |
9957 | flp->name = fieldname; | |
9958 | flp->length = 0; | |
9959 | flp->head = NULL; | |
3da10d80 | 9960 | i = fip->nfnfields++; |
c906108c SS |
9961 | } |
9962 | ||
9963 | /* Create a new member function field and chain it to the field list | |
0963b4bd | 9964 | entry. */ |
c906108c | 9965 | new_fnfield = (struct nextfnfield *) xmalloc (sizeof (struct nextfnfield)); |
b8c9b27d | 9966 | make_cleanup (xfree, new_fnfield); |
c906108c SS |
9967 | memset (new_fnfield, 0, sizeof (struct nextfnfield)); |
9968 | new_fnfield->next = flp->head; | |
9969 | flp->head = new_fnfield; | |
9970 | flp->length++; | |
9971 | ||
9972 | /* Fill in the member function field info. */ | |
9973 | fnp = &new_fnfield->fnfield; | |
3da10d80 KS |
9974 | |
9975 | /* Delay processing of the physname until later. */ | |
9976 | if (cu->language == language_cplus || cu->language == language_java) | |
9977 | { | |
9978 | add_to_method_list (type, i, flp->length - 1, fieldname, | |
9979 | die, cu); | |
9980 | } | |
9981 | else | |
9982 | { | |
1d06ead6 | 9983 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
9984 | fnp->physname = physname ? physname : ""; |
9985 | } | |
9986 | ||
c906108c | 9987 | fnp->type = alloc_type (objfile); |
f792889a DJ |
9988 | this_type = read_type_die (die, cu); |
9989 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 9990 | { |
f792889a | 9991 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 9992 | |
f792889a | 9993 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
9994 | of the method itself (TYPE_CODE_METHOD). */ |
9995 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
9996 | TYPE_TARGET_TYPE (this_type), |
9997 | TYPE_FIELDS (this_type), | |
9998 | TYPE_NFIELDS (this_type), | |
9999 | TYPE_VARARGS (this_type)); | |
c906108c SS |
10000 | |
10001 | /* Handle static member functions. | |
c5aa993b | 10002 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
10003 | member functions. G++ helps GDB by marking the first |
10004 | parameter for non-static member functions (which is the this | |
10005 | pointer) as artificial. We obtain this information from | |
10006 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 10007 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
10008 | fnp->voffset = VOFFSET_STATIC; |
10009 | } | |
10010 | else | |
e2e0b3e5 | 10011 | complaint (&symfile_complaints, _("member function type missing for '%s'"), |
3da10d80 | 10012 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
10013 | |
10014 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 10015 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 10016 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 10017 | |
3e43a32a MS |
10018 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
10019 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
10020 | |
10021 | /* Get accessibility. */ | |
e142c38c | 10022 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c | 10023 | if (attr) |
60d5a603 JK |
10024 | accessibility = DW_UNSND (attr); |
10025 | else | |
10026 | accessibility = dwarf2_default_access_attribute (die, cu); | |
10027 | switch (accessibility) | |
c906108c | 10028 | { |
60d5a603 JK |
10029 | case DW_ACCESS_private: |
10030 | fnp->is_private = 1; | |
10031 | break; | |
10032 | case DW_ACCESS_protected: | |
10033 | fnp->is_protected = 1; | |
10034 | break; | |
c906108c SS |
10035 | } |
10036 | ||
b02dede2 | 10037 | /* Check for artificial methods. */ |
e142c38c | 10038 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
10039 | if (attr && DW_UNSND (attr) != 0) |
10040 | fnp->is_artificial = 1; | |
10041 | ||
0d564a31 | 10042 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
10043 | function. For older versions of GCC, this is an offset in the |
10044 | appropriate virtual table, as specified by DW_AT_containing_type. | |
10045 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
10046 | to the object address. */ |
10047 | ||
e142c38c | 10048 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
aec5aa8b | 10049 | if (attr) |
8e19ed76 | 10050 | { |
aec5aa8b | 10051 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 10052 | { |
aec5aa8b TT |
10053 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
10054 | { | |
10055 | /* Old-style GCC. */ | |
10056 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
10057 | } | |
10058 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
10059 | || (DW_BLOCK (attr)->size > 1 | |
10060 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
10061 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
10062 | { | |
10063 | struct dwarf_block blk; | |
10064 | int offset; | |
10065 | ||
10066 | offset = (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
10067 | ? 1 : 2); | |
10068 | blk.size = DW_BLOCK (attr)->size - offset; | |
10069 | blk.data = DW_BLOCK (attr)->data + offset; | |
10070 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); | |
10071 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
10072 | dwarf2_complex_location_expr_complaint (); | |
10073 | else | |
10074 | fnp->voffset /= cu->header.addr_size; | |
10075 | fnp->voffset += 2; | |
10076 | } | |
10077 | else | |
10078 | dwarf2_complex_location_expr_complaint (); | |
10079 | ||
10080 | if (!fnp->fcontext) | |
10081 | fnp->fcontext = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
10082 | } | |
3690dd37 | 10083 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 10084 | { |
4d3c2250 | 10085 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
10086 | } |
10087 | else | |
10088 | { | |
4d3c2250 KB |
10089 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
10090 | fieldname); | |
8e19ed76 | 10091 | } |
0d564a31 | 10092 | } |
d48cc9dd DJ |
10093 | else |
10094 | { | |
10095 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
10096 | if (attr && DW_UNSND (attr)) | |
10097 | { | |
10098 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
10099 | complaint (&symfile_complaints, | |
3e43a32a MS |
10100 | _("Member function \"%s\" (offset %d) is virtual " |
10101 | "but the vtable offset is not specified"), | |
b64f50a1 | 10102 | fieldname, die->offset.sect_off); |
9655fd1a | 10103 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
10104 | TYPE_CPLUS_DYNAMIC (type) = 1; |
10105 | } | |
10106 | } | |
c906108c SS |
10107 | } |
10108 | ||
10109 | /* Create the vector of member function fields, and attach it to the type. */ | |
10110 | ||
10111 | static void | |
fba45db2 | 10112 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 10113 | struct dwarf2_cu *cu) |
c906108c SS |
10114 | { |
10115 | struct fnfieldlist *flp; | |
c906108c SS |
10116 | int i; |
10117 | ||
b4ba55a1 | 10118 | if (cu->language == language_ada) |
a73c6dcd | 10119 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 10120 | |
c906108c SS |
10121 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
10122 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
10123 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * fip->nfnfields); | |
10124 | ||
10125 | for (i = 0, flp = fip->fnfieldlists; i < fip->nfnfields; i++, flp++) | |
10126 | { | |
10127 | struct nextfnfield *nfp = flp->head; | |
10128 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); | |
10129 | int k; | |
10130 | ||
10131 | TYPE_FN_FIELDLIST_NAME (type, i) = flp->name; | |
10132 | TYPE_FN_FIELDLIST_LENGTH (type, i) = flp->length; | |
10133 | fn_flp->fn_fields = (struct fn_field *) | |
10134 | TYPE_ALLOC (type, sizeof (struct fn_field) * flp->length); | |
10135 | for (k = flp->length; (k--, nfp); nfp = nfp->next) | |
c5aa993b | 10136 | fn_flp->fn_fields[k] = nfp->fnfield; |
c906108c SS |
10137 | } |
10138 | ||
10139 | TYPE_NFN_FIELDS (type) = fip->nfnfields; | |
c906108c SS |
10140 | } |
10141 | ||
1168df01 JB |
10142 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
10143 | language, zero otherwise. */ | |
10144 | static int | |
10145 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
10146 | { | |
10147 | static const char vptr[] = "_vptr"; | |
987504bb | 10148 | static const char vtable[] = "vtable"; |
1168df01 | 10149 | |
987504bb JJ |
10150 | /* Look for the C++ and Java forms of the vtable. */ |
10151 | if ((cu->language == language_java | |
10152 | && strncmp (name, vtable, sizeof (vtable) - 1) == 0) | |
10153 | || (strncmp (name, vptr, sizeof (vptr) - 1) == 0 | |
10154 | && is_cplus_marker (name[sizeof (vptr) - 1]))) | |
1168df01 JB |
10155 | return 1; |
10156 | ||
10157 | return 0; | |
10158 | } | |
10159 | ||
c0dd20ea | 10160 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
10161 | functions, with the ABI-specified layout. If TYPE describes |
10162 | such a structure, smash it into a member function type. | |
61049d3b DJ |
10163 | |
10164 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
10165 | This is GCC PR debug/28767. */ | |
c0dd20ea | 10166 | |
0b92b5bb TT |
10167 | static void |
10168 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 10169 | { |
0b92b5bb | 10170 | struct type *pfn_type, *domain_type, *new_type; |
c0dd20ea DJ |
10171 | |
10172 | /* Check for a structure with no name and two children. */ | |
0b92b5bb TT |
10173 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2) |
10174 | return; | |
c0dd20ea DJ |
10175 | |
10176 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
10177 | if (TYPE_FIELD_NAME (type, 0) == NULL |
10178 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
10179 | || TYPE_FIELD_NAME (type, 1) == NULL | |
10180 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
10181 | return; | |
c0dd20ea DJ |
10182 | |
10183 | /* Find the type of the method. */ | |
0b92b5bb | 10184 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea DJ |
10185 | if (pfn_type == NULL |
10186 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
10187 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
0b92b5bb | 10188 | return; |
c0dd20ea DJ |
10189 | |
10190 | /* Look for the "this" argument. */ | |
10191 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
10192 | if (TYPE_NFIELDS (pfn_type) == 0 | |
0b92b5bb | 10193 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
c0dd20ea | 10194 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) |
0b92b5bb | 10195 | return; |
c0dd20ea DJ |
10196 | |
10197 | domain_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); | |
0b92b5bb TT |
10198 | new_type = alloc_type (objfile); |
10199 | smash_to_method_type (new_type, domain_type, TYPE_TARGET_TYPE (pfn_type), | |
c0dd20ea DJ |
10200 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), |
10201 | TYPE_VARARGS (pfn_type)); | |
0b92b5bb | 10202 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 10203 | } |
1168df01 | 10204 | |
685b1105 JK |
10205 | /* Return non-zero if the CU's PRODUCER string matches the Intel C/C++ compiler |
10206 | (icc). */ | |
10207 | ||
10208 | static int | |
10209 | producer_is_icc (struct dwarf2_cu *cu) | |
10210 | { | |
10211 | if (!cu->checked_producer) | |
10212 | check_producer (cu); | |
10213 | ||
10214 | return cu->producer_is_icc; | |
10215 | } | |
10216 | ||
c906108c | 10217 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
10218 | (definition) to create a type for the structure or union. Fill in |
10219 | the type's name and general properties; the members will not be | |
10220 | processed until process_structure_type. | |
c906108c | 10221 | |
c767944b DJ |
10222 | NOTE: we need to call these functions regardless of whether or not the |
10223 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c SS |
10224 | structure or union. This gets the type entered into our set of |
10225 | user defined types. | |
10226 | ||
10227 | However, if the structure is incomplete (an opaque struct/union) | |
10228 | then suppress creating a symbol table entry for it since gdb only | |
10229 | wants to find the one with the complete definition. Note that if | |
10230 | it is complete, we just call new_symbol, which does it's own | |
10231 | checking about whether the struct/union is anonymous or not (and | |
10232 | suppresses creating a symbol table entry itself). */ | |
10233 | ||
f792889a | 10234 | static struct type * |
134d01f1 | 10235 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10236 | { |
e7c27a73 | 10237 | struct objfile *objfile = cu->objfile; |
c906108c SS |
10238 | struct type *type; |
10239 | struct attribute *attr; | |
39cbfefa | 10240 | char *name; |
c906108c | 10241 | |
348e048f DE |
10242 | /* If the definition of this type lives in .debug_types, read that type. |
10243 | Don't follow DW_AT_specification though, that will take us back up | |
10244 | the chain and we want to go down. */ | |
45e58e77 | 10245 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
10246 | if (attr) |
10247 | { | |
10248 | struct dwarf2_cu *type_cu = cu; | |
10249 | struct die_info *type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
9a619af0 | 10250 | |
348e048f DE |
10251 | /* We could just recurse on read_structure_type, but we need to call |
10252 | get_die_type to ensure only one type for this DIE is created. | |
10253 | This is important, for example, because for c++ classes we need | |
10254 | TYPE_NAME set which is only done by new_symbol. Blech. */ | |
10255 | type = read_type_die (type_die, type_cu); | |
9dc481d3 DE |
10256 | |
10257 | /* TYPE_CU may not be the same as CU. | |
10258 | Ensure TYPE is recorded in CU's type_hash table. */ | |
348e048f DE |
10259 | return set_die_type (die, type, cu); |
10260 | } | |
10261 | ||
c0dd20ea | 10262 | type = alloc_type (objfile); |
c906108c | 10263 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 10264 | |
39cbfefa DJ |
10265 | name = dwarf2_name (die, cu); |
10266 | if (name != NULL) | |
c906108c | 10267 | { |
987504bb JJ |
10268 | if (cu->language == language_cplus |
10269 | || cu->language == language_java) | |
63d06c5c | 10270 | { |
3da10d80 KS |
10271 | char *full_name = (char *) dwarf2_full_name (name, die, cu); |
10272 | ||
10273 | /* dwarf2_full_name might have already finished building the DIE's | |
10274 | type. If so, there is no need to continue. */ | |
10275 | if (get_die_type (die, cu) != NULL) | |
10276 | return get_die_type (die, cu); | |
10277 | ||
10278 | TYPE_TAG_NAME (type) = full_name; | |
94af9270 KS |
10279 | if (die->tag == DW_TAG_structure_type |
10280 | || die->tag == DW_TAG_class_type) | |
10281 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c DC |
10282 | } |
10283 | else | |
10284 | { | |
d8151005 DJ |
10285 | /* The name is already allocated along with this objfile, so |
10286 | we don't need to duplicate it for the type. */ | |
94af9270 KS |
10287 | TYPE_TAG_NAME (type) = (char *) name; |
10288 | if (die->tag == DW_TAG_class_type) | |
10289 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c | 10290 | } |
c906108c SS |
10291 | } |
10292 | ||
10293 | if (die->tag == DW_TAG_structure_type) | |
10294 | { | |
10295 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
10296 | } | |
10297 | else if (die->tag == DW_TAG_union_type) | |
10298 | { | |
10299 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
10300 | } | |
10301 | else | |
10302 | { | |
c906108c SS |
10303 | TYPE_CODE (type) = TYPE_CODE_CLASS; |
10304 | } | |
10305 | ||
0cc2414c TT |
10306 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
10307 | TYPE_DECLARED_CLASS (type) = 1; | |
10308 | ||
e142c38c | 10309 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
10310 | if (attr) |
10311 | { | |
10312 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
10313 | } | |
10314 | else | |
10315 | { | |
10316 | TYPE_LENGTH (type) = 0; | |
10317 | } | |
10318 | ||
685b1105 JK |
10319 | if (producer_is_icc (cu)) |
10320 | { | |
10321 | /* ICC does not output the required DW_AT_declaration | |
10322 | on incomplete types, but gives them a size of zero. */ | |
10323 | } | |
10324 | else | |
10325 | TYPE_STUB_SUPPORTED (type) = 1; | |
10326 | ||
dc718098 | 10327 | if (die_is_declaration (die, cu)) |
876cecd0 | 10328 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
10329 | else if (attr == NULL && die->child == NULL |
10330 | && producer_is_realview (cu->producer)) | |
10331 | /* RealView does not output the required DW_AT_declaration | |
10332 | on incomplete types. */ | |
10333 | TYPE_STUB (type) = 1; | |
dc718098 | 10334 | |
c906108c SS |
10335 | /* We need to add the type field to the die immediately so we don't |
10336 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 10337 | type within the structure itself. */ |
1c379e20 | 10338 | set_die_type (die, type, cu); |
c906108c | 10339 | |
7e314c57 JK |
10340 | /* set_die_type should be already done. */ |
10341 | set_descriptive_type (type, die, cu); | |
10342 | ||
c767944b DJ |
10343 | return type; |
10344 | } | |
10345 | ||
10346 | /* Finish creating a structure or union type, including filling in | |
10347 | its members and creating a symbol for it. */ | |
10348 | ||
10349 | static void | |
10350 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
10351 | { | |
10352 | struct objfile *objfile = cu->objfile; | |
10353 | struct die_info *child_die = die->child; | |
10354 | struct type *type; | |
10355 | ||
10356 | type = get_die_type (die, cu); | |
10357 | if (type == NULL) | |
10358 | type = read_structure_type (die, cu); | |
10359 | ||
e142c38c | 10360 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
10361 | { |
10362 | struct field_info fi; | |
10363 | struct die_info *child_die; | |
34eaf542 | 10364 | VEC (symbolp) *template_args = NULL; |
c767944b | 10365 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
c906108c SS |
10366 | |
10367 | memset (&fi, 0, sizeof (struct field_info)); | |
10368 | ||
639d11d3 | 10369 | child_die = die->child; |
c906108c SS |
10370 | |
10371 | while (child_die && child_die->tag) | |
10372 | { | |
a9a9bd0f DC |
10373 | if (child_die->tag == DW_TAG_member |
10374 | || child_die->tag == DW_TAG_variable) | |
c906108c | 10375 | { |
a9a9bd0f DC |
10376 | /* NOTE: carlton/2002-11-05: A C++ static data member |
10377 | should be a DW_TAG_member that is a declaration, but | |
10378 | all versions of G++ as of this writing (so through at | |
10379 | least 3.2.1) incorrectly generate DW_TAG_variable | |
10380 | tags for them instead. */ | |
e7c27a73 | 10381 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 10382 | } |
8713b1b1 | 10383 | else if (child_die->tag == DW_TAG_subprogram) |
c906108c | 10384 | { |
0963b4bd | 10385 | /* C++ member function. */ |
e7c27a73 | 10386 | dwarf2_add_member_fn (&fi, child_die, type, cu); |
c906108c SS |
10387 | } |
10388 | else if (child_die->tag == DW_TAG_inheritance) | |
10389 | { | |
10390 | /* C++ base class field. */ | |
e7c27a73 | 10391 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 10392 | } |
98751a41 JK |
10393 | else if (child_die->tag == DW_TAG_typedef) |
10394 | dwarf2_add_typedef (&fi, child_die, cu); | |
34eaf542 TT |
10395 | else if (child_die->tag == DW_TAG_template_type_param |
10396 | || child_die->tag == DW_TAG_template_value_param) | |
10397 | { | |
10398 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
10399 | ||
f1078f66 DJ |
10400 | if (arg != NULL) |
10401 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
10402 | } |
10403 | ||
c906108c SS |
10404 | child_die = sibling_die (child_die); |
10405 | } | |
10406 | ||
34eaf542 TT |
10407 | /* Attach template arguments to type. */ |
10408 | if (! VEC_empty (symbolp, template_args)) | |
10409 | { | |
10410 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
10411 | TYPE_N_TEMPLATE_ARGUMENTS (type) | |
10412 | = VEC_length (symbolp, template_args); | |
10413 | TYPE_TEMPLATE_ARGUMENTS (type) | |
10414 | = obstack_alloc (&objfile->objfile_obstack, | |
10415 | (TYPE_N_TEMPLATE_ARGUMENTS (type) | |
10416 | * sizeof (struct symbol *))); | |
10417 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), | |
10418 | VEC_address (symbolp, template_args), | |
10419 | (TYPE_N_TEMPLATE_ARGUMENTS (type) | |
10420 | * sizeof (struct symbol *))); | |
10421 | VEC_free (symbolp, template_args); | |
10422 | } | |
10423 | ||
c906108c SS |
10424 | /* Attach fields and member functions to the type. */ |
10425 | if (fi.nfields) | |
e7c27a73 | 10426 | dwarf2_attach_fields_to_type (&fi, type, cu); |
c906108c SS |
10427 | if (fi.nfnfields) |
10428 | { | |
e7c27a73 | 10429 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 10430 | |
c5aa993b | 10431 | /* Get the type which refers to the base class (possibly this |
c906108c | 10432 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
10433 | class from the DW_AT_containing_type attribute. This use of |
10434 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 10435 | |
e142c38c | 10436 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 10437 | { |
e7c27a73 | 10438 | struct type *t = die_containing_type (die, cu); |
c906108c SS |
10439 | |
10440 | TYPE_VPTR_BASETYPE (type) = t; | |
10441 | if (type == t) | |
10442 | { | |
c906108c SS |
10443 | int i; |
10444 | ||
10445 | /* Our own class provides vtbl ptr. */ | |
10446 | for (i = TYPE_NFIELDS (t) - 1; | |
10447 | i >= TYPE_N_BASECLASSES (t); | |
10448 | --i) | |
10449 | { | |
0d5cff50 | 10450 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 10451 | |
1168df01 | 10452 | if (is_vtable_name (fieldname, cu)) |
c906108c SS |
10453 | { |
10454 | TYPE_VPTR_FIELDNO (type) = i; | |
10455 | break; | |
10456 | } | |
10457 | } | |
10458 | ||
10459 | /* Complain if virtual function table field not found. */ | |
10460 | if (i < TYPE_N_BASECLASSES (t)) | |
4d3c2250 | 10461 | complaint (&symfile_complaints, |
3e43a32a MS |
10462 | _("virtual function table pointer " |
10463 | "not found when defining class '%s'"), | |
4d3c2250 KB |
10464 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : |
10465 | ""); | |
c906108c SS |
10466 | } |
10467 | else | |
10468 | { | |
10469 | TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t); | |
10470 | } | |
10471 | } | |
f6235d4c EZ |
10472 | else if (cu->producer |
10473 | && strncmp (cu->producer, | |
10474 | "IBM(R) XL C/C++ Advanced Edition", 32) == 0) | |
10475 | { | |
10476 | /* The IBM XLC compiler does not provide direct indication | |
10477 | of the containing type, but the vtable pointer is | |
10478 | always named __vfp. */ | |
10479 | ||
10480 | int i; | |
10481 | ||
10482 | for (i = TYPE_NFIELDS (type) - 1; | |
10483 | i >= TYPE_N_BASECLASSES (type); | |
10484 | --i) | |
10485 | { | |
10486 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
10487 | { | |
10488 | TYPE_VPTR_FIELDNO (type) = i; | |
10489 | TYPE_VPTR_BASETYPE (type) = type; | |
10490 | break; | |
10491 | } | |
10492 | } | |
10493 | } | |
c906108c | 10494 | } |
98751a41 JK |
10495 | |
10496 | /* Copy fi.typedef_field_list linked list elements content into the | |
10497 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
10498 | if (fi.typedef_field_list) | |
10499 | { | |
10500 | int i = fi.typedef_field_list_count; | |
10501 | ||
a0d7a4ff | 10502 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 JK |
10503 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
10504 | = TYPE_ALLOC (type, sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * i); | |
10505 | TYPE_TYPEDEF_FIELD_COUNT (type) = i; | |
10506 | ||
10507 | /* Reverse the list order to keep the debug info elements order. */ | |
10508 | while (--i >= 0) | |
10509 | { | |
10510 | struct typedef_field *dest, *src; | |
6e70227d | 10511 | |
98751a41 JK |
10512 | dest = &TYPE_TYPEDEF_FIELD (type, i); |
10513 | src = &fi.typedef_field_list->field; | |
10514 | fi.typedef_field_list = fi.typedef_field_list->next; | |
10515 | *dest = *src; | |
10516 | } | |
10517 | } | |
c767944b DJ |
10518 | |
10519 | do_cleanups (back_to); | |
eb2a6f42 TT |
10520 | |
10521 | if (HAVE_CPLUS_STRUCT (type)) | |
10522 | TYPE_CPLUS_REALLY_JAVA (type) = cu->language == language_java; | |
c906108c | 10523 | } |
63d06c5c | 10524 | |
bb5ed363 | 10525 | quirk_gcc_member_function_pointer (type, objfile); |
0b92b5bb | 10526 | |
90aeadfc DC |
10527 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
10528 | snapshots) has been known to create a die giving a declaration | |
10529 | for a class that has, as a child, a die giving a definition for a | |
10530 | nested class. So we have to process our children even if the | |
10531 | current die is a declaration. Normally, of course, a declaration | |
10532 | won't have any children at all. */ | |
134d01f1 | 10533 | |
90aeadfc DC |
10534 | while (child_die != NULL && child_die->tag) |
10535 | { | |
10536 | if (child_die->tag == DW_TAG_member | |
10537 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
10538 | || child_die->tag == DW_TAG_inheritance |
10539 | || child_die->tag == DW_TAG_template_value_param | |
10540 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 10541 | { |
90aeadfc | 10542 | /* Do nothing. */ |
134d01f1 | 10543 | } |
90aeadfc DC |
10544 | else |
10545 | process_die (child_die, cu); | |
134d01f1 | 10546 | |
90aeadfc | 10547 | child_die = sibling_die (child_die); |
134d01f1 DJ |
10548 | } |
10549 | ||
fa4028e9 JB |
10550 | /* Do not consider external references. According to the DWARF standard, |
10551 | these DIEs are identified by the fact that they have no byte_size | |
10552 | attribute, and a declaration attribute. */ | |
10553 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
10554 | || !die_is_declaration (die, cu)) | |
c767944b | 10555 | new_symbol (die, type, cu); |
134d01f1 DJ |
10556 | } |
10557 | ||
10558 | /* Given a DW_AT_enumeration_type die, set its type. We do not | |
10559 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 10560 | |
f792889a | 10561 | static struct type * |
134d01f1 | 10562 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10563 | { |
e7c27a73 | 10564 | struct objfile *objfile = cu->objfile; |
c906108c | 10565 | struct type *type; |
c906108c | 10566 | struct attribute *attr; |
0114d602 | 10567 | const char *name; |
134d01f1 | 10568 | |
348e048f DE |
10569 | /* If the definition of this type lives in .debug_types, read that type. |
10570 | Don't follow DW_AT_specification though, that will take us back up | |
10571 | the chain and we want to go down. */ | |
45e58e77 | 10572 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
10573 | if (attr) |
10574 | { | |
10575 | struct dwarf2_cu *type_cu = cu; | |
10576 | struct die_info *type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
9a619af0 | 10577 | |
348e048f | 10578 | type = read_type_die (type_die, type_cu); |
9dc481d3 DE |
10579 | |
10580 | /* TYPE_CU may not be the same as CU. | |
10581 | Ensure TYPE is recorded in CU's type_hash table. */ | |
348e048f DE |
10582 | return set_die_type (die, type, cu); |
10583 | } | |
10584 | ||
c906108c SS |
10585 | type = alloc_type (objfile); |
10586 | ||
10587 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
94af9270 | 10588 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 10589 | if (name != NULL) |
0114d602 | 10590 | TYPE_TAG_NAME (type) = (char *) name; |
c906108c | 10591 | |
e142c38c | 10592 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
10593 | if (attr) |
10594 | { | |
10595 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
10596 | } | |
10597 | else | |
10598 | { | |
10599 | TYPE_LENGTH (type) = 0; | |
10600 | } | |
10601 | ||
137033e9 JB |
10602 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
10603 | declared as private in the package spec, and then defined only | |
10604 | inside the package body. Such types are known as Taft Amendment | |
10605 | Types. When another package uses such a type, an incomplete DIE | |
10606 | may be generated by the compiler. */ | |
02eb380e | 10607 | if (die_is_declaration (die, cu)) |
876cecd0 | 10608 | TYPE_STUB (type) = 1; |
02eb380e | 10609 | |
f792889a | 10610 | return set_die_type (die, type, cu); |
134d01f1 DJ |
10611 | } |
10612 | ||
10613 | /* Given a pointer to a die which begins an enumeration, process all | |
10614 | the dies that define the members of the enumeration, and create the | |
10615 | symbol for the enumeration type. | |
10616 | ||
10617 | NOTE: We reverse the order of the element list. */ | |
10618 | ||
10619 | static void | |
10620 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
10621 | { | |
f792889a | 10622 | struct type *this_type; |
134d01f1 | 10623 | |
f792889a DJ |
10624 | this_type = get_die_type (die, cu); |
10625 | if (this_type == NULL) | |
10626 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 10627 | |
639d11d3 | 10628 | if (die->child != NULL) |
c906108c | 10629 | { |
9dc481d3 DE |
10630 | struct die_info *child_die; |
10631 | struct symbol *sym; | |
10632 | struct field *fields = NULL; | |
10633 | int num_fields = 0; | |
10634 | int unsigned_enum = 1; | |
10635 | char *name; | |
cafec441 TT |
10636 | int flag_enum = 1; |
10637 | ULONGEST mask = 0; | |
9dc481d3 | 10638 | |
639d11d3 | 10639 | child_die = die->child; |
c906108c SS |
10640 | while (child_die && child_die->tag) |
10641 | { | |
10642 | if (child_die->tag != DW_TAG_enumerator) | |
10643 | { | |
e7c27a73 | 10644 | process_die (child_die, cu); |
c906108c SS |
10645 | } |
10646 | else | |
10647 | { | |
39cbfefa DJ |
10648 | name = dwarf2_name (child_die, cu); |
10649 | if (name) | |
c906108c | 10650 | { |
f792889a | 10651 | sym = new_symbol (child_die, this_type, cu); |
c906108c | 10652 | if (SYMBOL_VALUE (sym) < 0) |
cafec441 TT |
10653 | { |
10654 | unsigned_enum = 0; | |
10655 | flag_enum = 0; | |
10656 | } | |
10657 | else if ((mask & SYMBOL_VALUE (sym)) != 0) | |
10658 | flag_enum = 0; | |
10659 | else | |
10660 | mask |= SYMBOL_VALUE (sym); | |
c906108c SS |
10661 | |
10662 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
10663 | { | |
10664 | fields = (struct field *) | |
10665 | xrealloc (fields, | |
10666 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 10667 | * sizeof (struct field)); |
c906108c SS |
10668 | } |
10669 | ||
3567439c | 10670 | FIELD_NAME (fields[num_fields]) = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 10671 | FIELD_TYPE (fields[num_fields]) = NULL; |
14e75d8e | 10672 | SET_FIELD_ENUMVAL (fields[num_fields], SYMBOL_VALUE (sym)); |
c906108c SS |
10673 | FIELD_BITSIZE (fields[num_fields]) = 0; |
10674 | ||
10675 | num_fields++; | |
10676 | } | |
10677 | } | |
10678 | ||
10679 | child_die = sibling_die (child_die); | |
10680 | } | |
10681 | ||
10682 | if (num_fields) | |
10683 | { | |
f792889a DJ |
10684 | TYPE_NFIELDS (this_type) = num_fields; |
10685 | TYPE_FIELDS (this_type) = (struct field *) | |
10686 | TYPE_ALLOC (this_type, sizeof (struct field) * num_fields); | |
10687 | memcpy (TYPE_FIELDS (this_type), fields, | |
c906108c | 10688 | sizeof (struct field) * num_fields); |
b8c9b27d | 10689 | xfree (fields); |
c906108c SS |
10690 | } |
10691 | if (unsigned_enum) | |
876cecd0 | 10692 | TYPE_UNSIGNED (this_type) = 1; |
cafec441 TT |
10693 | if (flag_enum) |
10694 | TYPE_FLAG_ENUM (this_type) = 1; | |
c906108c | 10695 | } |
134d01f1 | 10696 | |
6c83ed52 TT |
10697 | /* If we are reading an enum from a .debug_types unit, and the enum |
10698 | is a declaration, and the enum is not the signatured type in the | |
10699 | unit, then we do not want to add a symbol for it. Adding a | |
10700 | symbol would in some cases obscure the true definition of the | |
10701 | enum, giving users an incomplete type when the definition is | |
10702 | actually available. Note that we do not want to do this for all | |
10703 | enums which are just declarations, because C++0x allows forward | |
10704 | enum declarations. */ | |
3019eac3 | 10705 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
10706 | && die_is_declaration (die, cu)) |
10707 | { | |
52dc124a | 10708 | struct signatured_type *sig_type; |
6c83ed52 | 10709 | |
52dc124a | 10710 | sig_type |
6c83ed52 | 10711 | = lookup_signatured_type_at_offset (dwarf2_per_objfile->objfile, |
3019eac3 | 10712 | cu->per_cu->info_or_types_section, |
6c83ed52 | 10713 | cu->per_cu->offset); |
3019eac3 DE |
10714 | gdb_assert (sig_type->type_offset_in_section.sect_off != 0); |
10715 | if (sig_type->type_offset_in_section.sect_off != die->offset.sect_off) | |
6c83ed52 TT |
10716 | return; |
10717 | } | |
10718 | ||
f792889a | 10719 | new_symbol (die, this_type, cu); |
c906108c SS |
10720 | } |
10721 | ||
10722 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
10723 | the DIE's type field. For now, this only handles one dimensional | |
10724 | arrays. */ | |
10725 | ||
f792889a | 10726 | static struct type * |
e7c27a73 | 10727 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10728 | { |
e7c27a73 | 10729 | struct objfile *objfile = cu->objfile; |
c906108c | 10730 | struct die_info *child_die; |
7e314c57 | 10731 | struct type *type; |
c906108c SS |
10732 | struct type *element_type, *range_type, *index_type; |
10733 | struct type **range_types = NULL; | |
10734 | struct attribute *attr; | |
10735 | int ndim = 0; | |
10736 | struct cleanup *back_to; | |
39cbfefa | 10737 | char *name; |
c906108c | 10738 | |
e7c27a73 | 10739 | element_type = die_type (die, cu); |
c906108c | 10740 | |
7e314c57 JK |
10741 | /* The die_type call above may have already set the type for this DIE. */ |
10742 | type = get_die_type (die, cu); | |
10743 | if (type) | |
10744 | return type; | |
10745 | ||
c906108c SS |
10746 | /* Irix 6.2 native cc creates array types without children for |
10747 | arrays with unspecified length. */ | |
639d11d3 | 10748 | if (die->child == NULL) |
c906108c | 10749 | { |
46bf5051 | 10750 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 10751 | range_type = create_range_type (NULL, index_type, 0, -1); |
f792889a DJ |
10752 | type = create_array_type (NULL, element_type, range_type); |
10753 | return set_die_type (die, type, cu); | |
c906108c SS |
10754 | } |
10755 | ||
10756 | back_to = make_cleanup (null_cleanup, NULL); | |
639d11d3 | 10757 | child_die = die->child; |
c906108c SS |
10758 | while (child_die && child_die->tag) |
10759 | { | |
10760 | if (child_die->tag == DW_TAG_subrange_type) | |
10761 | { | |
f792889a | 10762 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 10763 | |
f792889a | 10764 | if (child_type != NULL) |
a02abb62 | 10765 | { |
0963b4bd MS |
10766 | /* The range type was succesfully read. Save it for the |
10767 | array type creation. */ | |
a02abb62 JB |
10768 | if ((ndim % DW_FIELD_ALLOC_CHUNK) == 0) |
10769 | { | |
10770 | range_types = (struct type **) | |
10771 | xrealloc (range_types, (ndim + DW_FIELD_ALLOC_CHUNK) | |
10772 | * sizeof (struct type *)); | |
10773 | if (ndim == 0) | |
10774 | make_cleanup (free_current_contents, &range_types); | |
10775 | } | |
f792889a | 10776 | range_types[ndim++] = child_type; |
a02abb62 | 10777 | } |
c906108c SS |
10778 | } |
10779 | child_die = sibling_die (child_die); | |
10780 | } | |
10781 | ||
10782 | /* Dwarf2 dimensions are output from left to right, create the | |
10783 | necessary array types in backwards order. */ | |
7ca2d3a3 | 10784 | |
c906108c | 10785 | type = element_type; |
7ca2d3a3 DL |
10786 | |
10787 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
10788 | { | |
10789 | int i = 0; | |
9a619af0 | 10790 | |
7ca2d3a3 DL |
10791 | while (i < ndim) |
10792 | type = create_array_type (NULL, type, range_types[i++]); | |
10793 | } | |
10794 | else | |
10795 | { | |
10796 | while (ndim-- > 0) | |
10797 | type = create_array_type (NULL, type, range_types[ndim]); | |
10798 | } | |
c906108c | 10799 | |
f5f8a009 EZ |
10800 | /* Understand Dwarf2 support for vector types (like they occur on |
10801 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
10802 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
10803 | custom vendor extension. The main difference between a regular | |
10804 | array and the vector variant is that vectors are passed by value | |
10805 | to functions. */ | |
e142c38c | 10806 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 | 10807 | if (attr) |
ea37ba09 | 10808 | make_vector_type (type); |
f5f8a009 | 10809 | |
dbc98a8b KW |
10810 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
10811 | implementation may choose to implement triple vectors using this | |
10812 | attribute. */ | |
10813 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
10814 | if (attr) | |
10815 | { | |
10816 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
10817 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
10818 | else | |
3e43a32a MS |
10819 | complaint (&symfile_complaints, |
10820 | _("DW_AT_byte_size for array type smaller " | |
10821 | "than the total size of elements")); | |
dbc98a8b KW |
10822 | } |
10823 | ||
39cbfefa DJ |
10824 | name = dwarf2_name (die, cu); |
10825 | if (name) | |
10826 | TYPE_NAME (type) = name; | |
6e70227d | 10827 | |
0963b4bd | 10828 | /* Install the type in the die. */ |
7e314c57 JK |
10829 | set_die_type (die, type, cu); |
10830 | ||
10831 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
10832 | set_descriptive_type (type, die, cu); |
10833 | ||
c906108c SS |
10834 | do_cleanups (back_to); |
10835 | ||
7e314c57 | 10836 | return type; |
c906108c SS |
10837 | } |
10838 | ||
7ca2d3a3 | 10839 | static enum dwarf_array_dim_ordering |
6e70227d | 10840 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
10841 | { |
10842 | struct attribute *attr; | |
10843 | ||
10844 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
10845 | ||
10846 | if (attr) return DW_SND (attr); | |
10847 | ||
0963b4bd MS |
10848 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
10849 | opposite order to the dwarf2 specification, but data is still | |
10850 | laid out as per normal fortran. | |
7ca2d3a3 | 10851 | |
0963b4bd MS |
10852 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
10853 | version checking. */ | |
7ca2d3a3 | 10854 | |
905e0470 PM |
10855 | if (cu->language == language_fortran |
10856 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
10857 | { |
10858 | return DW_ORD_row_major; | |
10859 | } | |
10860 | ||
6e70227d | 10861 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
10862 | { |
10863 | case array_column_major: | |
10864 | return DW_ORD_col_major; | |
10865 | case array_row_major: | |
10866 | default: | |
10867 | return DW_ORD_row_major; | |
10868 | }; | |
10869 | } | |
10870 | ||
72019c9c | 10871 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 10872 | the DIE's type field. */ |
72019c9c | 10873 | |
f792889a | 10874 | static struct type * |
72019c9c GM |
10875 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
10876 | { | |
7e314c57 JK |
10877 | struct type *domain_type, *set_type; |
10878 | struct attribute *attr; | |
f792889a | 10879 | |
7e314c57 JK |
10880 | domain_type = die_type (die, cu); |
10881 | ||
10882 | /* The die_type call above may have already set the type for this DIE. */ | |
10883 | set_type = get_die_type (die, cu); | |
10884 | if (set_type) | |
10885 | return set_type; | |
10886 | ||
10887 | set_type = create_set_type (NULL, domain_type); | |
10888 | ||
10889 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
d09039dd PM |
10890 | if (attr) |
10891 | TYPE_LENGTH (set_type) = DW_UNSND (attr); | |
7e314c57 | 10892 | |
f792889a | 10893 | return set_die_type (die, set_type, cu); |
72019c9c | 10894 | } |
7ca2d3a3 | 10895 | |
c906108c SS |
10896 | /* First cut: install each common block member as a global variable. */ |
10897 | ||
10898 | static void | |
e7c27a73 | 10899 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
10900 | { |
10901 | struct die_info *child_die; | |
10902 | struct attribute *attr; | |
10903 | struct symbol *sym; | |
10904 | CORE_ADDR base = (CORE_ADDR) 0; | |
10905 | ||
e142c38c | 10906 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
10907 | if (attr) |
10908 | { | |
0963b4bd | 10909 | /* Support the .debug_loc offsets. */ |
8e19ed76 PS |
10910 | if (attr_form_is_block (attr)) |
10911 | { | |
e7c27a73 | 10912 | base = decode_locdesc (DW_BLOCK (attr), cu); |
8e19ed76 | 10913 | } |
3690dd37 | 10914 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 10915 | { |
4d3c2250 | 10916 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
10917 | } |
10918 | else | |
10919 | { | |
4d3c2250 KB |
10920 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
10921 | "common block member"); | |
8e19ed76 | 10922 | } |
c906108c | 10923 | } |
639d11d3 | 10924 | if (die->child != NULL) |
c906108c | 10925 | { |
639d11d3 | 10926 | child_die = die->child; |
c906108c SS |
10927 | while (child_die && child_die->tag) |
10928 | { | |
74ac6d43 TT |
10929 | LONGEST offset; |
10930 | ||
e7c27a73 | 10931 | sym = new_symbol (child_die, NULL, cu); |
e8d28ef4 TT |
10932 | if (sym != NULL |
10933 | && handle_data_member_location (child_die, cu, &offset)) | |
c906108c | 10934 | { |
74ac6d43 | 10935 | SYMBOL_VALUE_ADDRESS (sym) = base + offset; |
c906108c SS |
10936 | add_symbol_to_list (sym, &global_symbols); |
10937 | } | |
10938 | child_die = sibling_die (child_die); | |
10939 | } | |
10940 | } | |
10941 | } | |
10942 | ||
0114d602 | 10943 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 10944 | |
0114d602 DJ |
10945 | static struct type * |
10946 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 10947 | { |
e7c27a73 | 10948 | struct objfile *objfile = cu->objfile; |
0114d602 | 10949 | const char *previous_prefix, *name; |
9219021c | 10950 | int is_anonymous; |
0114d602 DJ |
10951 | struct type *type; |
10952 | ||
10953 | /* For extensions, reuse the type of the original namespace. */ | |
10954 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
10955 | { | |
10956 | struct die_info *ext_die; | |
10957 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 10958 | |
0114d602 DJ |
10959 | ext_die = dwarf2_extension (die, &ext_cu); |
10960 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
10961 | |
10962 | /* EXT_CU may not be the same as CU. | |
10963 | Ensure TYPE is recorded in CU's type_hash table. */ | |
0114d602 DJ |
10964 | return set_die_type (die, type, cu); |
10965 | } | |
9219021c | 10966 | |
e142c38c | 10967 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
10968 | |
10969 | /* Now build the name of the current namespace. */ | |
10970 | ||
0114d602 DJ |
10971 | previous_prefix = determine_prefix (die, cu); |
10972 | if (previous_prefix[0] != '\0') | |
10973 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 10974 | previous_prefix, name, 0, cu); |
0114d602 DJ |
10975 | |
10976 | /* Create the type. */ | |
10977 | type = init_type (TYPE_CODE_NAMESPACE, 0, 0, NULL, | |
10978 | objfile); | |
10979 | TYPE_NAME (type) = (char *) name; | |
10980 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
10981 | ||
60531b24 | 10982 | return set_die_type (die, type, cu); |
0114d602 DJ |
10983 | } |
10984 | ||
10985 | /* Read a C++ namespace. */ | |
10986 | ||
10987 | static void | |
10988 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
10989 | { | |
10990 | struct objfile *objfile = cu->objfile; | |
0114d602 | 10991 | int is_anonymous; |
9219021c | 10992 | |
5c4e30ca DC |
10993 | /* Add a symbol associated to this if we haven't seen the namespace |
10994 | before. Also, add a using directive if it's an anonymous | |
10995 | namespace. */ | |
9219021c | 10996 | |
f2f0e013 | 10997 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
10998 | { |
10999 | struct type *type; | |
11000 | ||
0114d602 | 11001 | type = read_type_die (die, cu); |
e7c27a73 | 11002 | new_symbol (die, type, cu); |
5c4e30ca | 11003 | |
e8e80198 | 11004 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 11005 | if (is_anonymous) |
0114d602 DJ |
11006 | { |
11007 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 11008 | |
c0cc3a76 | 11009 | cp_add_using_directive (previous_prefix, TYPE_NAME (type), NULL, |
32019081 | 11010 | NULL, NULL, &objfile->objfile_obstack); |
0114d602 | 11011 | } |
5c4e30ca | 11012 | } |
9219021c | 11013 | |
639d11d3 | 11014 | if (die->child != NULL) |
d9fa45fe | 11015 | { |
639d11d3 | 11016 | struct die_info *child_die = die->child; |
6e70227d | 11017 | |
d9fa45fe DC |
11018 | while (child_die && child_die->tag) |
11019 | { | |
e7c27a73 | 11020 | process_die (child_die, cu); |
d9fa45fe DC |
11021 | child_die = sibling_die (child_die); |
11022 | } | |
11023 | } | |
38d518c9 EZ |
11024 | } |
11025 | ||
f55ee35c JK |
11026 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
11027 | imported module. Still we need that type as local Fortran "use ... only" | |
11028 | declaration imports depend on the created type in determine_prefix. */ | |
11029 | ||
11030 | static struct type * | |
11031 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
11032 | { | |
11033 | struct objfile *objfile = cu->objfile; | |
11034 | char *module_name; | |
11035 | struct type *type; | |
11036 | ||
11037 | module_name = dwarf2_name (die, cu); | |
11038 | if (!module_name) | |
3e43a32a MS |
11039 | complaint (&symfile_complaints, |
11040 | _("DW_TAG_module has no name, offset 0x%x"), | |
b64f50a1 | 11041 | die->offset.sect_off); |
f55ee35c JK |
11042 | type = init_type (TYPE_CODE_MODULE, 0, 0, module_name, objfile); |
11043 | ||
11044 | /* determine_prefix uses TYPE_TAG_NAME. */ | |
11045 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
11046 | ||
11047 | return set_die_type (die, type, cu); | |
11048 | } | |
11049 | ||
5d7cb8df JK |
11050 | /* Read a Fortran module. */ |
11051 | ||
11052 | static void | |
11053 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
11054 | { | |
11055 | struct die_info *child_die = die->child; | |
11056 | ||
5d7cb8df JK |
11057 | while (child_die && child_die->tag) |
11058 | { | |
11059 | process_die (child_die, cu); | |
11060 | child_die = sibling_die (child_die); | |
11061 | } | |
11062 | } | |
11063 | ||
38d518c9 EZ |
11064 | /* Return the name of the namespace represented by DIE. Set |
11065 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
11066 | namespace. */ | |
11067 | ||
11068 | static const char * | |
e142c38c | 11069 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
11070 | { |
11071 | struct die_info *current_die; | |
11072 | const char *name = NULL; | |
11073 | ||
11074 | /* Loop through the extensions until we find a name. */ | |
11075 | ||
11076 | for (current_die = die; | |
11077 | current_die != NULL; | |
f2f0e013 | 11078 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 11079 | { |
e142c38c | 11080 | name = dwarf2_name (current_die, cu); |
38d518c9 EZ |
11081 | if (name != NULL) |
11082 | break; | |
11083 | } | |
11084 | ||
11085 | /* Is it an anonymous namespace? */ | |
11086 | ||
11087 | *is_anonymous = (name == NULL); | |
11088 | if (*is_anonymous) | |
2b1dbab0 | 11089 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
11090 | |
11091 | return name; | |
d9fa45fe DC |
11092 | } |
11093 | ||
c906108c SS |
11094 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
11095 | the user defined type vector. */ | |
11096 | ||
f792889a | 11097 | static struct type * |
e7c27a73 | 11098 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11099 | { |
5e2b427d | 11100 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); |
e7c27a73 | 11101 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 11102 | struct type *type; |
8b2dbe47 KB |
11103 | struct attribute *attr_byte_size; |
11104 | struct attribute *attr_address_class; | |
11105 | int byte_size, addr_class; | |
7e314c57 JK |
11106 | struct type *target_type; |
11107 | ||
11108 | target_type = die_type (die, cu); | |
c906108c | 11109 | |
7e314c57 JK |
11110 | /* The die_type call above may have already set the type for this DIE. */ |
11111 | type = get_die_type (die, cu); | |
11112 | if (type) | |
11113 | return type; | |
11114 | ||
11115 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 11116 | |
e142c38c | 11117 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
11118 | if (attr_byte_size) |
11119 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 11120 | else |
8b2dbe47 KB |
11121 | byte_size = cu_header->addr_size; |
11122 | ||
e142c38c | 11123 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
11124 | if (attr_address_class) |
11125 | addr_class = DW_UNSND (attr_address_class); | |
11126 | else | |
11127 | addr_class = DW_ADDR_none; | |
11128 | ||
11129 | /* If the pointer size or address class is different than the | |
11130 | default, create a type variant marked as such and set the | |
11131 | length accordingly. */ | |
11132 | if (TYPE_LENGTH (type) != byte_size || addr_class != DW_ADDR_none) | |
c906108c | 11133 | { |
5e2b427d | 11134 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
11135 | { |
11136 | int type_flags; | |
11137 | ||
849957d9 | 11138 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 11139 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
11140 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
11141 | == 0); | |
8b2dbe47 KB |
11142 | type = make_type_with_address_space (type, type_flags); |
11143 | } | |
11144 | else if (TYPE_LENGTH (type) != byte_size) | |
11145 | { | |
3e43a32a MS |
11146 | complaint (&symfile_complaints, |
11147 | _("invalid pointer size %d"), byte_size); | |
8b2dbe47 | 11148 | } |
6e70227d | 11149 | else |
9a619af0 MS |
11150 | { |
11151 | /* Should we also complain about unhandled address classes? */ | |
11152 | } | |
c906108c | 11153 | } |
8b2dbe47 KB |
11154 | |
11155 | TYPE_LENGTH (type) = byte_size; | |
f792889a | 11156 | return set_die_type (die, type, cu); |
c906108c SS |
11157 | } |
11158 | ||
11159 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
11160 | the user defined type vector. */ | |
11161 | ||
f792889a | 11162 | static struct type * |
e7c27a73 | 11163 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
11164 | { |
11165 | struct type *type; | |
11166 | struct type *to_type; | |
11167 | struct type *domain; | |
11168 | ||
e7c27a73 DJ |
11169 | to_type = die_type (die, cu); |
11170 | domain = die_containing_type (die, cu); | |
0d5de010 | 11171 | |
7e314c57 JK |
11172 | /* The calls above may have already set the type for this DIE. */ |
11173 | type = get_die_type (die, cu); | |
11174 | if (type) | |
11175 | return type; | |
11176 | ||
0d5de010 DJ |
11177 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) |
11178 | type = lookup_methodptr_type (to_type); | |
11179 | else | |
11180 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 11181 | |
f792889a | 11182 | return set_die_type (die, type, cu); |
c906108c SS |
11183 | } |
11184 | ||
11185 | /* Extract all information from a DW_TAG_reference_type DIE and add to | |
11186 | the user defined type vector. */ | |
11187 | ||
f792889a | 11188 | static struct type * |
e7c27a73 | 11189 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11190 | { |
e7c27a73 | 11191 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 11192 | struct type *type, *target_type; |
c906108c SS |
11193 | struct attribute *attr; |
11194 | ||
7e314c57 JK |
11195 | target_type = die_type (die, cu); |
11196 | ||
11197 | /* The die_type call above may have already set the type for this DIE. */ | |
11198 | type = get_die_type (die, cu); | |
11199 | if (type) | |
11200 | return type; | |
11201 | ||
11202 | type = lookup_reference_type (target_type); | |
e142c38c | 11203 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
11204 | if (attr) |
11205 | { | |
11206 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
11207 | } | |
11208 | else | |
11209 | { | |
107d2387 | 11210 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 11211 | } |
f792889a | 11212 | return set_die_type (die, type, cu); |
c906108c SS |
11213 | } |
11214 | ||
f792889a | 11215 | static struct type * |
e7c27a73 | 11216 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11217 | { |
f792889a | 11218 | struct type *base_type, *cv_type; |
c906108c | 11219 | |
e7c27a73 | 11220 | base_type = die_type (die, cu); |
7e314c57 JK |
11221 | |
11222 | /* The die_type call above may have already set the type for this DIE. */ | |
11223 | cv_type = get_die_type (die, cu); | |
11224 | if (cv_type) | |
11225 | return cv_type; | |
11226 | ||
2f608a3a KW |
11227 | /* In case the const qualifier is applied to an array type, the element type |
11228 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
11229 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
11230 | { | |
11231 | struct type *el_type, *inner_array; | |
11232 | ||
11233 | base_type = copy_type (base_type); | |
11234 | inner_array = base_type; | |
11235 | ||
11236 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) | |
11237 | { | |
11238 | TYPE_TARGET_TYPE (inner_array) = | |
11239 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
11240 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
11241 | } | |
11242 | ||
11243 | el_type = TYPE_TARGET_TYPE (inner_array); | |
11244 | TYPE_TARGET_TYPE (inner_array) = | |
11245 | make_cv_type (1, TYPE_VOLATILE (el_type), el_type, NULL); | |
11246 | ||
11247 | return set_die_type (die, base_type, cu); | |
11248 | } | |
11249 | ||
f792889a DJ |
11250 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
11251 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
11252 | } |
11253 | ||
f792889a | 11254 | static struct type * |
e7c27a73 | 11255 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11256 | { |
f792889a | 11257 | struct type *base_type, *cv_type; |
c906108c | 11258 | |
e7c27a73 | 11259 | base_type = die_type (die, cu); |
7e314c57 JK |
11260 | |
11261 | /* The die_type call above may have already set the type for this DIE. */ | |
11262 | cv_type = get_die_type (die, cu); | |
11263 | if (cv_type) | |
11264 | return cv_type; | |
11265 | ||
f792889a DJ |
11266 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
11267 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
11268 | } |
11269 | ||
11270 | /* Extract all information from a DW_TAG_string_type DIE and add to | |
11271 | the user defined type vector. It isn't really a user defined type, | |
11272 | but it behaves like one, with other DIE's using an AT_user_def_type | |
11273 | attribute to reference it. */ | |
11274 | ||
f792889a | 11275 | static struct type * |
e7c27a73 | 11276 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11277 | { |
e7c27a73 | 11278 | struct objfile *objfile = cu->objfile; |
3b7538c0 | 11279 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
11280 | struct type *type, *range_type, *index_type, *char_type; |
11281 | struct attribute *attr; | |
11282 | unsigned int length; | |
11283 | ||
e142c38c | 11284 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
11285 | if (attr) |
11286 | { | |
11287 | length = DW_UNSND (attr); | |
11288 | } | |
11289 | else | |
11290 | { | |
0963b4bd | 11291 | /* Check for the DW_AT_byte_size attribute. */ |
e142c38c | 11292 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
11293 | if (attr) |
11294 | { | |
11295 | length = DW_UNSND (attr); | |
11296 | } | |
11297 | else | |
11298 | { | |
11299 | length = 1; | |
11300 | } | |
c906108c | 11301 | } |
6ccb9162 | 11302 | |
46bf5051 | 11303 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 11304 | range_type = create_range_type (NULL, index_type, 1, length); |
3b7538c0 UW |
11305 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
11306 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 11307 | |
f792889a | 11308 | return set_die_type (die, type, cu); |
c906108c SS |
11309 | } |
11310 | ||
11311 | /* Handle DIES due to C code like: | |
11312 | ||
11313 | struct foo | |
c5aa993b JM |
11314 | { |
11315 | int (*funcp)(int a, long l); | |
11316 | int b; | |
11317 | }; | |
c906108c | 11318 | |
0963b4bd | 11319 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 11320 | |
f792889a | 11321 | static struct type * |
e7c27a73 | 11322 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11323 | { |
bb5ed363 | 11324 | struct objfile *objfile = cu->objfile; |
0963b4bd MS |
11325 | struct type *type; /* Type that this function returns. */ |
11326 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
11327 | struct attribute *attr; |
11328 | ||
e7c27a73 | 11329 | type = die_type (die, cu); |
7e314c57 JK |
11330 | |
11331 | /* The die_type call above may have already set the type for this DIE. */ | |
11332 | ftype = get_die_type (die, cu); | |
11333 | if (ftype) | |
11334 | return ftype; | |
11335 | ||
0c8b41f1 | 11336 | ftype = lookup_function_type (type); |
c906108c | 11337 | |
5b8101ae | 11338 | /* All functions in C++, Pascal and Java have prototypes. */ |
e142c38c | 11339 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); |
c906108c | 11340 | if ((attr && (DW_UNSND (attr) != 0)) |
987504bb | 11341 | || cu->language == language_cplus |
5b8101ae PM |
11342 | || cu->language == language_java |
11343 | || cu->language == language_pascal) | |
876cecd0 | 11344 | TYPE_PROTOTYPED (ftype) = 1; |
a6c727b2 DJ |
11345 | else if (producer_is_realview (cu->producer)) |
11346 | /* RealView does not emit DW_AT_prototyped. We can not | |
11347 | distinguish prototyped and unprototyped functions; default to | |
11348 | prototyped, since that is more common in modern code (and | |
11349 | RealView warns about unprototyped functions). */ | |
11350 | TYPE_PROTOTYPED (ftype) = 1; | |
c906108c | 11351 | |
c055b101 CV |
11352 | /* Store the calling convention in the type if it's available in |
11353 | the subroutine die. Otherwise set the calling convention to | |
11354 | the default value DW_CC_normal. */ | |
11355 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
54fcddd0 UW |
11356 | if (attr) |
11357 | TYPE_CALLING_CONVENTION (ftype) = DW_UNSND (attr); | |
11358 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) | |
11359 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
11360 | else | |
11361 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 GM |
11362 | |
11363 | /* We need to add the subroutine type to the die immediately so | |
11364 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 11365 | declared as the same subroutine type. */ |
76c10ea2 | 11366 | set_die_type (die, ftype, cu); |
6e70227d | 11367 | |
639d11d3 | 11368 | if (die->child != NULL) |
c906108c | 11369 | { |
bb5ed363 | 11370 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 11371 | struct die_info *child_die; |
8072405b | 11372 | int nparams, iparams; |
c906108c SS |
11373 | |
11374 | /* Count the number of parameters. | |
11375 | FIXME: GDB currently ignores vararg functions, but knows about | |
11376 | vararg member functions. */ | |
8072405b | 11377 | nparams = 0; |
639d11d3 | 11378 | child_die = die->child; |
c906108c SS |
11379 | while (child_die && child_die->tag) |
11380 | { | |
11381 | if (child_die->tag == DW_TAG_formal_parameter) | |
11382 | nparams++; | |
11383 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 11384 | TYPE_VARARGS (ftype) = 1; |
c906108c SS |
11385 | child_die = sibling_die (child_die); |
11386 | } | |
11387 | ||
11388 | /* Allocate storage for parameters and fill them in. */ | |
11389 | TYPE_NFIELDS (ftype) = nparams; | |
11390 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 11391 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 11392 | |
8072405b JK |
11393 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
11394 | even if we error out during the parameters reading below. */ | |
11395 | for (iparams = 0; iparams < nparams; iparams++) | |
11396 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
11397 | ||
11398 | iparams = 0; | |
639d11d3 | 11399 | child_die = die->child; |
c906108c SS |
11400 | while (child_die && child_die->tag) |
11401 | { | |
11402 | if (child_die->tag == DW_TAG_formal_parameter) | |
11403 | { | |
3ce3b1ba PA |
11404 | struct type *arg_type; |
11405 | ||
11406 | /* DWARF version 2 has no clean way to discern C++ | |
11407 | static and non-static member functions. G++ helps | |
11408 | GDB by marking the first parameter for non-static | |
11409 | member functions (which is the this pointer) as | |
11410 | artificial. We pass this information to | |
11411 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
11412 | ||
11413 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
11414 | 4.5 does not yet generate. */ | |
e142c38c | 11415 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
11416 | if (attr) |
11417 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
11418 | else | |
418835cc KS |
11419 | { |
11420 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; | |
11421 | ||
11422 | /* GCC/43521: In java, the formal parameter | |
11423 | "this" is sometimes not marked with DW_AT_artificial. */ | |
11424 | if (cu->language == language_java) | |
11425 | { | |
11426 | const char *name = dwarf2_name (child_die, cu); | |
9a619af0 | 11427 | |
418835cc KS |
11428 | if (name && !strcmp (name, "this")) |
11429 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 1; | |
11430 | } | |
11431 | } | |
3ce3b1ba PA |
11432 | arg_type = die_type (child_die, cu); |
11433 | ||
11434 | /* RealView does not mark THIS as const, which the testsuite | |
11435 | expects. GCC marks THIS as const in method definitions, | |
11436 | but not in the class specifications (GCC PR 43053). */ | |
11437 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
11438 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
11439 | { | |
11440 | int is_this = 0; | |
11441 | struct dwarf2_cu *arg_cu = cu; | |
11442 | const char *name = dwarf2_name (child_die, cu); | |
11443 | ||
11444 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
11445 | if (attr) | |
11446 | { | |
11447 | /* If the compiler emits this, use it. */ | |
11448 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
11449 | is_this = 1; | |
11450 | } | |
11451 | else if (name && strcmp (name, "this") == 0) | |
11452 | /* Function definitions will have the argument names. */ | |
11453 | is_this = 1; | |
11454 | else if (name == NULL && iparams == 0) | |
11455 | /* Declarations may not have the names, so like | |
11456 | elsewhere in GDB, assume an artificial first | |
11457 | argument is "this". */ | |
11458 | is_this = 1; | |
11459 | ||
11460 | if (is_this) | |
11461 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
11462 | arg_type, 0); | |
11463 | } | |
11464 | ||
11465 | TYPE_FIELD_TYPE (ftype, iparams) = arg_type; | |
c906108c SS |
11466 | iparams++; |
11467 | } | |
11468 | child_die = sibling_die (child_die); | |
11469 | } | |
11470 | } | |
11471 | ||
76c10ea2 | 11472 | return ftype; |
c906108c SS |
11473 | } |
11474 | ||
f792889a | 11475 | static struct type * |
e7c27a73 | 11476 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11477 | { |
e7c27a73 | 11478 | struct objfile *objfile = cu->objfile; |
0114d602 | 11479 | const char *name = NULL; |
3c8e0968 | 11480 | struct type *this_type, *target_type; |
c906108c | 11481 | |
94af9270 | 11482 | name = dwarf2_full_name (NULL, die, cu); |
f792889a | 11483 | this_type = init_type (TYPE_CODE_TYPEDEF, 0, |
0114d602 DJ |
11484 | TYPE_FLAG_TARGET_STUB, NULL, objfile); |
11485 | TYPE_NAME (this_type) = (char *) name; | |
f792889a | 11486 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
11487 | target_type = die_type (die, cu); |
11488 | if (target_type != this_type) | |
11489 | TYPE_TARGET_TYPE (this_type) = target_type; | |
11490 | else | |
11491 | { | |
11492 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
11493 | spec and cause infinite loops in GDB. */ | |
11494 | complaint (&symfile_complaints, | |
11495 | _("Self-referential DW_TAG_typedef " | |
11496 | "- DIE at 0x%x [in module %s]"), | |
b64f50a1 | 11497 | die->offset.sect_off, objfile->name); |
3c8e0968 DE |
11498 | TYPE_TARGET_TYPE (this_type) = NULL; |
11499 | } | |
f792889a | 11500 | return this_type; |
c906108c SS |
11501 | } |
11502 | ||
11503 | /* Find a representation of a given base type and install | |
11504 | it in the TYPE field of the die. */ | |
11505 | ||
f792889a | 11506 | static struct type * |
e7c27a73 | 11507 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11508 | { |
e7c27a73 | 11509 | struct objfile *objfile = cu->objfile; |
c906108c SS |
11510 | struct type *type; |
11511 | struct attribute *attr; | |
11512 | int encoding = 0, size = 0; | |
39cbfefa | 11513 | char *name; |
6ccb9162 UW |
11514 | enum type_code code = TYPE_CODE_INT; |
11515 | int type_flags = 0; | |
11516 | struct type *target_type = NULL; | |
c906108c | 11517 | |
e142c38c | 11518 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
11519 | if (attr) |
11520 | { | |
11521 | encoding = DW_UNSND (attr); | |
11522 | } | |
e142c38c | 11523 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
11524 | if (attr) |
11525 | { | |
11526 | size = DW_UNSND (attr); | |
11527 | } | |
39cbfefa | 11528 | name = dwarf2_name (die, cu); |
6ccb9162 | 11529 | if (!name) |
c906108c | 11530 | { |
6ccb9162 UW |
11531 | complaint (&symfile_complaints, |
11532 | _("DW_AT_name missing from DW_TAG_base_type")); | |
c906108c | 11533 | } |
6ccb9162 UW |
11534 | |
11535 | switch (encoding) | |
c906108c | 11536 | { |
6ccb9162 UW |
11537 | case DW_ATE_address: |
11538 | /* Turn DW_ATE_address into a void * pointer. */ | |
11539 | code = TYPE_CODE_PTR; | |
11540 | type_flags |= TYPE_FLAG_UNSIGNED; | |
11541 | target_type = init_type (TYPE_CODE_VOID, 1, 0, NULL, objfile); | |
11542 | break; | |
11543 | case DW_ATE_boolean: | |
11544 | code = TYPE_CODE_BOOL; | |
11545 | type_flags |= TYPE_FLAG_UNSIGNED; | |
11546 | break; | |
11547 | case DW_ATE_complex_float: | |
11548 | code = TYPE_CODE_COMPLEX; | |
11549 | target_type = init_type (TYPE_CODE_FLT, size / 2, 0, NULL, objfile); | |
11550 | break; | |
11551 | case DW_ATE_decimal_float: | |
11552 | code = TYPE_CODE_DECFLOAT; | |
11553 | break; | |
11554 | case DW_ATE_float: | |
11555 | code = TYPE_CODE_FLT; | |
11556 | break; | |
11557 | case DW_ATE_signed: | |
11558 | break; | |
11559 | case DW_ATE_unsigned: | |
11560 | type_flags |= TYPE_FLAG_UNSIGNED; | |
3b2b8fea TT |
11561 | if (cu->language == language_fortran |
11562 | && name | |
11563 | && strncmp (name, "character(", sizeof ("character(") - 1) == 0) | |
11564 | code = TYPE_CODE_CHAR; | |
6ccb9162 UW |
11565 | break; |
11566 | case DW_ATE_signed_char: | |
6e70227d | 11567 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
11568 | || cu->language == language_pascal |
11569 | || cu->language == language_fortran) | |
6ccb9162 UW |
11570 | code = TYPE_CODE_CHAR; |
11571 | break; | |
11572 | case DW_ATE_unsigned_char: | |
868a0084 | 11573 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
11574 | || cu->language == language_pascal |
11575 | || cu->language == language_fortran) | |
6ccb9162 UW |
11576 | code = TYPE_CODE_CHAR; |
11577 | type_flags |= TYPE_FLAG_UNSIGNED; | |
11578 | break; | |
75079b2b TT |
11579 | case DW_ATE_UTF: |
11580 | /* We just treat this as an integer and then recognize the | |
11581 | type by name elsewhere. */ | |
11582 | break; | |
11583 | ||
6ccb9162 UW |
11584 | default: |
11585 | complaint (&symfile_complaints, _("unsupported DW_AT_encoding: '%s'"), | |
11586 | dwarf_type_encoding_name (encoding)); | |
11587 | break; | |
c906108c | 11588 | } |
6ccb9162 | 11589 | |
0114d602 DJ |
11590 | type = init_type (code, size, type_flags, NULL, objfile); |
11591 | TYPE_NAME (type) = name; | |
6ccb9162 UW |
11592 | TYPE_TARGET_TYPE (type) = target_type; |
11593 | ||
0114d602 | 11594 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 11595 | TYPE_NOSIGN (type) = 1; |
0114d602 | 11596 | |
f792889a | 11597 | return set_die_type (die, type, cu); |
c906108c SS |
11598 | } |
11599 | ||
a02abb62 JB |
11600 | /* Read the given DW_AT_subrange DIE. */ |
11601 | ||
f792889a | 11602 | static struct type * |
a02abb62 JB |
11603 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
11604 | { | |
11605 | struct type *base_type; | |
11606 | struct type *range_type; | |
11607 | struct attribute *attr; | |
4fae6e18 JK |
11608 | LONGEST low, high; |
11609 | int low_default_is_valid; | |
39cbfefa | 11610 | char *name; |
43bbcdc2 | 11611 | LONGEST negative_mask; |
e77813c8 | 11612 | |
a02abb62 | 11613 | base_type = die_type (die, cu); |
953ac07e JK |
11614 | /* Preserve BASE_TYPE's original type, just set its LENGTH. */ |
11615 | check_typedef (base_type); | |
a02abb62 | 11616 | |
7e314c57 JK |
11617 | /* The die_type call above may have already set the type for this DIE. */ |
11618 | range_type = get_die_type (die, cu); | |
11619 | if (range_type) | |
11620 | return range_type; | |
11621 | ||
4fae6e18 JK |
11622 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
11623 | omitting DW_AT_lower_bound. */ | |
11624 | switch (cu->language) | |
6e70227d | 11625 | { |
4fae6e18 JK |
11626 | case language_c: |
11627 | case language_cplus: | |
11628 | low = 0; | |
11629 | low_default_is_valid = 1; | |
11630 | break; | |
11631 | case language_fortran: | |
11632 | low = 1; | |
11633 | low_default_is_valid = 1; | |
11634 | break; | |
11635 | case language_d: | |
11636 | case language_java: | |
11637 | case language_objc: | |
11638 | low = 0; | |
11639 | low_default_is_valid = (cu->header.version >= 4); | |
11640 | break; | |
11641 | case language_ada: | |
11642 | case language_m2: | |
11643 | case language_pascal: | |
a02abb62 | 11644 | low = 1; |
4fae6e18 JK |
11645 | low_default_is_valid = (cu->header.version >= 4); |
11646 | break; | |
11647 | default: | |
11648 | low = 0; | |
11649 | low_default_is_valid = 0; | |
11650 | break; | |
a02abb62 JB |
11651 | } |
11652 | ||
dd5e6932 DJ |
11653 | /* FIXME: For variable sized arrays either of these could be |
11654 | a variable rather than a constant value. We'll allow it, | |
11655 | but we don't know how to handle it. */ | |
e142c38c | 11656 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 | 11657 | if (attr) |
4fae6e18 JK |
11658 | low = dwarf2_get_attr_constant_value (attr, low); |
11659 | else if (!low_default_is_valid) | |
11660 | complaint (&symfile_complaints, _("Missing DW_AT_lower_bound " | |
11661 | "- DIE at 0x%x [in module %s]"), | |
11662 | die->offset.sect_off, cu->objfile->name); | |
a02abb62 | 11663 | |
e142c38c | 11664 | attr = dwarf2_attr (die, DW_AT_upper_bound, cu); |
a02abb62 | 11665 | if (attr) |
6e70227d | 11666 | { |
d48323d8 | 11667 | if (attr_form_is_block (attr) || is_ref_attr (attr)) |
a02abb62 JB |
11668 | { |
11669 | /* GCC encodes arrays with unspecified or dynamic length | |
e77813c8 | 11670 | with a DW_FORM_block1 attribute or a reference attribute. |
a02abb62 JB |
11671 | FIXME: GDB does not yet know how to handle dynamic |
11672 | arrays properly, treat them as arrays with unspecified | |
11673 | length for now. | |
11674 | ||
11675 | FIXME: jimb/2003-09-22: GDB does not really know | |
11676 | how to handle arrays of unspecified length | |
11677 | either; we just represent them as zero-length | |
11678 | arrays. Choose an appropriate upper bound given | |
11679 | the lower bound we've computed above. */ | |
11680 | high = low - 1; | |
11681 | } | |
11682 | else | |
11683 | high = dwarf2_get_attr_constant_value (attr, 1); | |
11684 | } | |
e77813c8 PM |
11685 | else |
11686 | { | |
11687 | attr = dwarf2_attr (die, DW_AT_count, cu); | |
11688 | if (attr) | |
11689 | { | |
11690 | int count = dwarf2_get_attr_constant_value (attr, 1); | |
11691 | high = low + count - 1; | |
11692 | } | |
c2ff108b JK |
11693 | else |
11694 | { | |
11695 | /* Unspecified array length. */ | |
11696 | high = low - 1; | |
11697 | } | |
e77813c8 PM |
11698 | } |
11699 | ||
11700 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
11701 | without specifying a base type. | |
11702 | In that case, the base type must be set to the type of | |
11703 | the lower bound, upper bound or count, in that order, if any of these | |
11704 | three attributes references an object that has a type. | |
11705 | If no base type is found, the Dwarf-2 specifications say that | |
11706 | a signed integer type of size equal to the size of an address should | |
11707 | be used. | |
11708 | For the following C code: `extern char gdb_int [];' | |
11709 | GCC produces an empty range DIE. | |
11710 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
0963b4bd | 11711 | high bound or count are not yet handled by this code. */ |
e77813c8 PM |
11712 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) |
11713 | { | |
11714 | struct objfile *objfile = cu->objfile; | |
11715 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
11716 | int addr_size = gdbarch_addr_bit (gdbarch) /8; | |
11717 | struct type *int_type = objfile_type (objfile)->builtin_int; | |
11718 | ||
11719 | /* Test "int", "long int", and "long long int" objfile types, | |
11720 | and select the first one having a size above or equal to the | |
11721 | architecture address size. */ | |
11722 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
11723 | base_type = int_type; | |
11724 | else | |
11725 | { | |
11726 | int_type = objfile_type (objfile)->builtin_long; | |
11727 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
11728 | base_type = int_type; | |
11729 | else | |
11730 | { | |
11731 | int_type = objfile_type (objfile)->builtin_long_long; | |
11732 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
11733 | base_type = int_type; | |
11734 | } | |
11735 | } | |
11736 | } | |
a02abb62 | 11737 | |
6e70227d | 11738 | negative_mask = |
43bbcdc2 PH |
11739 | (LONGEST) -1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1); |
11740 | if (!TYPE_UNSIGNED (base_type) && (low & negative_mask)) | |
11741 | low |= negative_mask; | |
11742 | if (!TYPE_UNSIGNED (base_type) && (high & negative_mask)) | |
11743 | high |= negative_mask; | |
11744 | ||
a02abb62 JB |
11745 | range_type = create_range_type (NULL, base_type, low, high); |
11746 | ||
bbb0eef6 JK |
11747 | /* Mark arrays with dynamic length at least as an array of unspecified |
11748 | length. GDB could check the boundary but before it gets implemented at | |
11749 | least allow accessing the array elements. */ | |
d48323d8 | 11750 | if (attr && attr_form_is_block (attr)) |
bbb0eef6 JK |
11751 | TYPE_HIGH_BOUND_UNDEFINED (range_type) = 1; |
11752 | ||
c2ff108b JK |
11753 | /* Ada expects an empty array on no boundary attributes. */ |
11754 | if (attr == NULL && cu->language != language_ada) | |
11755 | TYPE_HIGH_BOUND_UNDEFINED (range_type) = 1; | |
11756 | ||
39cbfefa DJ |
11757 | name = dwarf2_name (die, cu); |
11758 | if (name) | |
11759 | TYPE_NAME (range_type) = name; | |
6e70227d | 11760 | |
e142c38c | 11761 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
11762 | if (attr) |
11763 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
11764 | ||
7e314c57 JK |
11765 | set_die_type (die, range_type, cu); |
11766 | ||
11767 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
11768 | set_descriptive_type (range_type, die, cu); |
11769 | ||
7e314c57 | 11770 | return range_type; |
a02abb62 | 11771 | } |
6e70227d | 11772 | |
f792889a | 11773 | static struct type * |
81a17f79 JB |
11774 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
11775 | { | |
11776 | struct type *type; | |
81a17f79 | 11777 | |
81a17f79 JB |
11778 | /* For now, we only support the C meaning of an unspecified type: void. */ |
11779 | ||
0114d602 DJ |
11780 | type = init_type (TYPE_CODE_VOID, 0, 0, NULL, cu->objfile); |
11781 | TYPE_NAME (type) = dwarf2_name (die, cu); | |
81a17f79 | 11782 | |
f792889a | 11783 | return set_die_type (die, type, cu); |
81a17f79 | 11784 | } |
a02abb62 | 11785 | |
639d11d3 DC |
11786 | /* Read a single die and all its descendents. Set the die's sibling |
11787 | field to NULL; set other fields in the die correctly, and set all | |
11788 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
11789 | location of the info_ptr after reading all of those dies. PARENT | |
11790 | is the parent of the die in question. */ | |
11791 | ||
11792 | static struct die_info * | |
dee91e82 DE |
11793 | read_die_and_children (const struct die_reader_specs *reader, |
11794 | gdb_byte *info_ptr, | |
11795 | gdb_byte **new_info_ptr, | |
11796 | struct die_info *parent) | |
639d11d3 DC |
11797 | { |
11798 | struct die_info *die; | |
fe1b8b76 | 11799 | gdb_byte *cur_ptr; |
639d11d3 DC |
11800 | int has_children; |
11801 | ||
93311388 | 11802 | cur_ptr = read_full_die (reader, &die, info_ptr, &has_children); |
1d325ec1 DJ |
11803 | if (die == NULL) |
11804 | { | |
11805 | *new_info_ptr = cur_ptr; | |
11806 | return NULL; | |
11807 | } | |
93311388 | 11808 | store_in_ref_table (die, reader->cu); |
639d11d3 DC |
11809 | |
11810 | if (has_children) | |
348e048f | 11811 | die->child = read_die_and_siblings (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
11812 | else |
11813 | { | |
11814 | die->child = NULL; | |
11815 | *new_info_ptr = cur_ptr; | |
11816 | } | |
11817 | ||
11818 | die->sibling = NULL; | |
11819 | die->parent = parent; | |
11820 | return die; | |
11821 | } | |
11822 | ||
11823 | /* Read a die, all of its descendents, and all of its siblings; set | |
11824 | all of the fields of all of the dies correctly. Arguments are as | |
11825 | in read_die_and_children. */ | |
11826 | ||
11827 | static struct die_info * | |
93311388 DE |
11828 | read_die_and_siblings (const struct die_reader_specs *reader, |
11829 | gdb_byte *info_ptr, | |
fe1b8b76 | 11830 | gdb_byte **new_info_ptr, |
639d11d3 DC |
11831 | struct die_info *parent) |
11832 | { | |
11833 | struct die_info *first_die, *last_sibling; | |
fe1b8b76 | 11834 | gdb_byte *cur_ptr; |
639d11d3 | 11835 | |
c906108c | 11836 | cur_ptr = info_ptr; |
639d11d3 DC |
11837 | first_die = last_sibling = NULL; |
11838 | ||
11839 | while (1) | |
c906108c | 11840 | { |
639d11d3 | 11841 | struct die_info *die |
dee91e82 | 11842 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 11843 | |
1d325ec1 | 11844 | if (die == NULL) |
c906108c | 11845 | { |
639d11d3 DC |
11846 | *new_info_ptr = cur_ptr; |
11847 | return first_die; | |
c906108c | 11848 | } |
1d325ec1 DJ |
11849 | |
11850 | if (!first_die) | |
11851 | first_die = die; | |
c906108c | 11852 | else |
1d325ec1 DJ |
11853 | last_sibling->sibling = die; |
11854 | ||
11855 | last_sibling = die; | |
c906108c | 11856 | } |
c906108c SS |
11857 | } |
11858 | ||
3019eac3 DE |
11859 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
11860 | attributes. | |
11861 | The caller is responsible for filling in the extra attributes | |
11862 | and updating (*DIEP)->num_attrs. | |
11863 | Set DIEP to point to a newly allocated die with its information, | |
11864 | except for its child, sibling, and parent fields. | |
11865 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
93311388 DE |
11866 | |
11867 | static gdb_byte * | |
3019eac3 DE |
11868 | read_full_die_1 (const struct die_reader_specs *reader, |
11869 | struct die_info **diep, gdb_byte *info_ptr, | |
11870 | int *has_children, int num_extra_attrs) | |
93311388 | 11871 | { |
b64f50a1 JK |
11872 | unsigned int abbrev_number, bytes_read, i; |
11873 | sect_offset offset; | |
93311388 DE |
11874 | struct abbrev_info *abbrev; |
11875 | struct die_info *die; | |
11876 | struct dwarf2_cu *cu = reader->cu; | |
11877 | bfd *abfd = reader->abfd; | |
11878 | ||
b64f50a1 | 11879 | offset.sect_off = info_ptr - reader->buffer; |
93311388 DE |
11880 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
11881 | info_ptr += bytes_read; | |
11882 | if (!abbrev_number) | |
11883 | { | |
11884 | *diep = NULL; | |
11885 | *has_children = 0; | |
11886 | return info_ptr; | |
11887 | } | |
11888 | ||
433df2d4 | 11889 | abbrev = abbrev_table_lookup_abbrev (cu->abbrev_table, abbrev_number); |
93311388 | 11890 | if (!abbrev) |
348e048f DE |
11891 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
11892 | abbrev_number, | |
11893 | bfd_get_filename (abfd)); | |
11894 | ||
3019eac3 | 11895 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
93311388 DE |
11896 | die->offset = offset; |
11897 | die->tag = abbrev->tag; | |
11898 | die->abbrev = abbrev_number; | |
11899 | ||
3019eac3 DE |
11900 | /* Make the result usable. |
11901 | The caller needs to update num_attrs after adding the extra | |
11902 | attributes. */ | |
93311388 DE |
11903 | die->num_attrs = abbrev->num_attrs; |
11904 | ||
11905 | for (i = 0; i < abbrev->num_attrs; ++i) | |
dee91e82 DE |
11906 | info_ptr = read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], |
11907 | info_ptr); | |
93311388 DE |
11908 | |
11909 | *diep = die; | |
11910 | *has_children = abbrev->has_children; | |
11911 | return info_ptr; | |
11912 | } | |
11913 | ||
3019eac3 DE |
11914 | /* Read a die and all its attributes. |
11915 | Set DIEP to point to a newly allocated die with its information, | |
11916 | except for its child, sibling, and parent fields. | |
11917 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
11918 | ||
11919 | static gdb_byte * | |
11920 | read_full_die (const struct die_reader_specs *reader, | |
11921 | struct die_info **diep, gdb_byte *info_ptr, | |
11922 | int *has_children) | |
11923 | { | |
11924 | return read_full_die_1 (reader, diep, info_ptr, has_children, 0); | |
11925 | } | |
433df2d4 DE |
11926 | \f |
11927 | /* Abbreviation tables. | |
3019eac3 | 11928 | |
433df2d4 | 11929 | In DWARF version 2, the description of the debugging information is |
c906108c SS |
11930 | stored in a separate .debug_abbrev section. Before we read any |
11931 | dies from a section we read in all abbreviations and install them | |
433df2d4 DE |
11932 | in a hash table. */ |
11933 | ||
11934 | /* Allocate space for a struct abbrev_info object in ABBREV_TABLE. */ | |
11935 | ||
11936 | static struct abbrev_info * | |
11937 | abbrev_table_alloc_abbrev (struct abbrev_table *abbrev_table) | |
11938 | { | |
11939 | struct abbrev_info *abbrev; | |
11940 | ||
11941 | abbrev = (struct abbrev_info *) | |
11942 | obstack_alloc (&abbrev_table->abbrev_obstack, sizeof (struct abbrev_info)); | |
11943 | memset (abbrev, 0, sizeof (struct abbrev_info)); | |
11944 | return abbrev; | |
11945 | } | |
11946 | ||
11947 | /* Add an abbreviation to the table. */ | |
c906108c SS |
11948 | |
11949 | static void | |
433df2d4 DE |
11950 | abbrev_table_add_abbrev (struct abbrev_table *abbrev_table, |
11951 | unsigned int abbrev_number, | |
11952 | struct abbrev_info *abbrev) | |
11953 | { | |
11954 | unsigned int hash_number; | |
11955 | ||
11956 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
11957 | abbrev->next = abbrev_table->abbrevs[hash_number]; | |
11958 | abbrev_table->abbrevs[hash_number] = abbrev; | |
11959 | } | |
dee91e82 | 11960 | |
433df2d4 DE |
11961 | /* Look up an abbrev in the table. |
11962 | Returns NULL if the abbrev is not found. */ | |
11963 | ||
11964 | static struct abbrev_info * | |
11965 | abbrev_table_lookup_abbrev (const struct abbrev_table *abbrev_table, | |
11966 | unsigned int abbrev_number) | |
c906108c | 11967 | { |
433df2d4 DE |
11968 | unsigned int hash_number; |
11969 | struct abbrev_info *abbrev; | |
11970 | ||
11971 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
11972 | abbrev = abbrev_table->abbrevs[hash_number]; | |
11973 | ||
11974 | while (abbrev) | |
11975 | { | |
11976 | if (abbrev->number == abbrev_number) | |
11977 | return abbrev; | |
11978 | abbrev = abbrev->next; | |
11979 | } | |
11980 | return NULL; | |
11981 | } | |
11982 | ||
11983 | /* Read in an abbrev table. */ | |
11984 | ||
11985 | static struct abbrev_table * | |
11986 | abbrev_table_read_table (struct dwarf2_section_info *section, | |
11987 | sect_offset offset) | |
11988 | { | |
11989 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
11990 | bfd *abfd = section->asection->owner; | |
11991 | struct abbrev_table *abbrev_table; | |
fe1b8b76 | 11992 | gdb_byte *abbrev_ptr; |
c906108c SS |
11993 | struct abbrev_info *cur_abbrev; |
11994 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
433df2d4 | 11995 | unsigned int abbrev_form; |
f3dd6933 DJ |
11996 | struct attr_abbrev *cur_attrs; |
11997 | unsigned int allocated_attrs; | |
c906108c | 11998 | |
433df2d4 | 11999 | abbrev_table = XMALLOC (struct abbrev_table); |
f4dc4d17 | 12000 | abbrev_table->offset = offset; |
433df2d4 DE |
12001 | obstack_init (&abbrev_table->abbrev_obstack); |
12002 | abbrev_table->abbrevs = obstack_alloc (&abbrev_table->abbrev_obstack, | |
12003 | (ABBREV_HASH_SIZE | |
12004 | * sizeof (struct abbrev_info *))); | |
12005 | memset (abbrev_table->abbrevs, 0, | |
12006 | ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); | |
c906108c | 12007 | |
433df2d4 DE |
12008 | dwarf2_read_section (objfile, section); |
12009 | abbrev_ptr = section->buffer + offset.sect_off; | |
c906108c SS |
12010 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
12011 | abbrev_ptr += bytes_read; | |
12012 | ||
f3dd6933 DJ |
12013 | allocated_attrs = ATTR_ALLOC_CHUNK; |
12014 | cur_attrs = xmalloc (allocated_attrs * sizeof (struct attr_abbrev)); | |
6e70227d | 12015 | |
0963b4bd | 12016 | /* Loop until we reach an abbrev number of 0. */ |
c906108c SS |
12017 | while (abbrev_number) |
12018 | { | |
433df2d4 | 12019 | cur_abbrev = abbrev_table_alloc_abbrev (abbrev_table); |
c906108c SS |
12020 | |
12021 | /* read in abbrev header */ | |
12022 | cur_abbrev->number = abbrev_number; | |
12023 | cur_abbrev->tag = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
12024 | abbrev_ptr += bytes_read; | |
12025 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
12026 | abbrev_ptr += 1; | |
12027 | ||
12028 | /* now read in declarations */ | |
12029 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
12030 | abbrev_ptr += bytes_read; | |
12031 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
12032 | abbrev_ptr += bytes_read; | |
12033 | while (abbrev_name) | |
12034 | { | |
f3dd6933 | 12035 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 12036 | { |
f3dd6933 DJ |
12037 | allocated_attrs += ATTR_ALLOC_CHUNK; |
12038 | cur_attrs | |
12039 | = xrealloc (cur_attrs, (allocated_attrs | |
12040 | * sizeof (struct attr_abbrev))); | |
c906108c | 12041 | } |
ae038cb0 | 12042 | |
f3dd6933 DJ |
12043 | cur_attrs[cur_abbrev->num_attrs].name = abbrev_name; |
12044 | cur_attrs[cur_abbrev->num_attrs++].form = abbrev_form; | |
c906108c SS |
12045 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
12046 | abbrev_ptr += bytes_read; | |
12047 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
12048 | abbrev_ptr += bytes_read; | |
12049 | } | |
12050 | ||
433df2d4 | 12051 | cur_abbrev->attrs = obstack_alloc (&abbrev_table->abbrev_obstack, |
f3dd6933 DJ |
12052 | (cur_abbrev->num_attrs |
12053 | * sizeof (struct attr_abbrev))); | |
12054 | memcpy (cur_abbrev->attrs, cur_attrs, | |
12055 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
12056 | ||
433df2d4 | 12057 | abbrev_table_add_abbrev (abbrev_table, abbrev_number, cur_abbrev); |
c906108c SS |
12058 | |
12059 | /* Get next abbreviation. | |
12060 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
12061 | always properly terminated with an abbrev number of 0. |
12062 | Exit loop if we encounter an abbreviation which we have | |
12063 | already read (which means we are about to read the abbreviations | |
12064 | for the next compile unit) or if the end of the abbreviation | |
12065 | table is reached. */ | |
433df2d4 | 12066 | if ((unsigned int) (abbrev_ptr - section->buffer) >= section->size) |
c906108c SS |
12067 | break; |
12068 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
12069 | abbrev_ptr += bytes_read; | |
433df2d4 | 12070 | if (abbrev_table_lookup_abbrev (abbrev_table, abbrev_number) != NULL) |
c906108c SS |
12071 | break; |
12072 | } | |
f3dd6933 DJ |
12073 | |
12074 | xfree (cur_attrs); | |
433df2d4 | 12075 | return abbrev_table; |
c906108c SS |
12076 | } |
12077 | ||
433df2d4 | 12078 | /* Free the resources held by ABBREV_TABLE. */ |
c906108c | 12079 | |
c906108c | 12080 | static void |
433df2d4 | 12081 | abbrev_table_free (struct abbrev_table *abbrev_table) |
c906108c | 12082 | { |
433df2d4 DE |
12083 | obstack_free (&abbrev_table->abbrev_obstack, NULL); |
12084 | xfree (abbrev_table); | |
c906108c SS |
12085 | } |
12086 | ||
f4dc4d17 DE |
12087 | /* Same as abbrev_table_free but as a cleanup. |
12088 | We pass in a pointer to the pointer to the table so that we can | |
12089 | set the pointer to NULL when we're done. It also simplifies | |
12090 | build_type_unit_groups. */ | |
12091 | ||
12092 | static void | |
12093 | abbrev_table_free_cleanup (void *table_ptr) | |
12094 | { | |
12095 | struct abbrev_table **abbrev_table_ptr = table_ptr; | |
12096 | ||
12097 | if (*abbrev_table_ptr != NULL) | |
12098 | abbrev_table_free (*abbrev_table_ptr); | |
12099 | *abbrev_table_ptr = NULL; | |
12100 | } | |
12101 | ||
433df2d4 DE |
12102 | /* Read the abbrev table for CU from ABBREV_SECTION. */ |
12103 | ||
12104 | static void | |
12105 | dwarf2_read_abbrevs (struct dwarf2_cu *cu, | |
12106 | struct dwarf2_section_info *abbrev_section) | |
c906108c | 12107 | { |
433df2d4 DE |
12108 | cu->abbrev_table = |
12109 | abbrev_table_read_table (abbrev_section, cu->header.abbrev_offset); | |
12110 | } | |
c906108c | 12111 | |
433df2d4 | 12112 | /* Release the memory used by the abbrev table for a compilation unit. */ |
c906108c | 12113 | |
433df2d4 DE |
12114 | static void |
12115 | dwarf2_free_abbrev_table (void *ptr_to_cu) | |
12116 | { | |
12117 | struct dwarf2_cu *cu = ptr_to_cu; | |
c906108c | 12118 | |
433df2d4 DE |
12119 | abbrev_table_free (cu->abbrev_table); |
12120 | /* Set this to NULL so that we SEGV if we try to read it later, | |
12121 | and also because free_comp_unit verifies this is NULL. */ | |
12122 | cu->abbrev_table = NULL; | |
12123 | } | |
12124 | \f | |
72bf9492 DJ |
12125 | /* Returns nonzero if TAG represents a type that we might generate a partial |
12126 | symbol for. */ | |
12127 | ||
12128 | static int | |
12129 | is_type_tag_for_partial (int tag) | |
12130 | { | |
12131 | switch (tag) | |
12132 | { | |
12133 | #if 0 | |
12134 | /* Some types that would be reasonable to generate partial symbols for, | |
12135 | that we don't at present. */ | |
12136 | case DW_TAG_array_type: | |
12137 | case DW_TAG_file_type: | |
12138 | case DW_TAG_ptr_to_member_type: | |
12139 | case DW_TAG_set_type: | |
12140 | case DW_TAG_string_type: | |
12141 | case DW_TAG_subroutine_type: | |
12142 | #endif | |
12143 | case DW_TAG_base_type: | |
12144 | case DW_TAG_class_type: | |
680b30c7 | 12145 | case DW_TAG_interface_type: |
72bf9492 DJ |
12146 | case DW_TAG_enumeration_type: |
12147 | case DW_TAG_structure_type: | |
12148 | case DW_TAG_subrange_type: | |
12149 | case DW_TAG_typedef: | |
12150 | case DW_TAG_union_type: | |
12151 | return 1; | |
12152 | default: | |
12153 | return 0; | |
12154 | } | |
12155 | } | |
12156 | ||
12157 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
12158 | ||
12159 | static struct partial_die_info * | |
dee91e82 DE |
12160 | load_partial_dies (const struct die_reader_specs *reader, |
12161 | gdb_byte *info_ptr, int building_psymtab) | |
72bf9492 | 12162 | { |
dee91e82 | 12163 | struct dwarf2_cu *cu = reader->cu; |
bb5ed363 | 12164 | struct objfile *objfile = cu->objfile; |
72bf9492 DJ |
12165 | struct partial_die_info *part_die; |
12166 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; | |
12167 | struct abbrev_info *abbrev; | |
12168 | unsigned int bytes_read; | |
5afb4e99 | 12169 | unsigned int load_all = 0; |
72bf9492 DJ |
12170 | int nesting_level = 1; |
12171 | ||
12172 | parent_die = NULL; | |
12173 | last_die = NULL; | |
12174 | ||
7adf1e79 DE |
12175 | gdb_assert (cu->per_cu != NULL); |
12176 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
12177 | load_all = 1; |
12178 | ||
72bf9492 DJ |
12179 | cu->partial_dies |
12180 | = htab_create_alloc_ex (cu->header.length / 12, | |
12181 | partial_die_hash, | |
12182 | partial_die_eq, | |
12183 | NULL, | |
12184 | &cu->comp_unit_obstack, | |
12185 | hashtab_obstack_allocate, | |
12186 | dummy_obstack_deallocate); | |
12187 | ||
12188 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
12189 | sizeof (struct partial_die_info)); | |
12190 | ||
12191 | while (1) | |
12192 | { | |
12193 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
12194 | ||
12195 | /* A NULL abbrev means the end of a series of children. */ | |
12196 | if (abbrev == NULL) | |
12197 | { | |
12198 | if (--nesting_level == 0) | |
12199 | { | |
12200 | /* PART_DIE was probably the last thing allocated on the | |
12201 | comp_unit_obstack, so we could call obstack_free | |
12202 | here. We don't do that because the waste is small, | |
12203 | and will be cleaned up when we're done with this | |
12204 | compilation unit. This way, we're also more robust | |
12205 | against other users of the comp_unit_obstack. */ | |
12206 | return first_die; | |
12207 | } | |
12208 | info_ptr += bytes_read; | |
12209 | last_die = parent_die; | |
12210 | parent_die = parent_die->die_parent; | |
12211 | continue; | |
12212 | } | |
12213 | ||
98bfdba5 PA |
12214 | /* Check for template arguments. We never save these; if |
12215 | they're seen, we just mark the parent, and go on our way. */ | |
12216 | if (parent_die != NULL | |
12217 | && cu->language == language_cplus | |
12218 | && (abbrev->tag == DW_TAG_template_type_param | |
12219 | || abbrev->tag == DW_TAG_template_value_param)) | |
12220 | { | |
12221 | parent_die->has_template_arguments = 1; | |
12222 | ||
12223 | if (!load_all) | |
12224 | { | |
12225 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 12226 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
12227 | continue; |
12228 | } | |
12229 | } | |
12230 | ||
0d99eb77 | 12231 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
12232 | Skip their other children. */ |
12233 | if (!load_all | |
12234 | && cu->language == language_cplus | |
12235 | && parent_die != NULL | |
12236 | && parent_die->tag == DW_TAG_subprogram) | |
12237 | { | |
dee91e82 | 12238 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
12239 | continue; |
12240 | } | |
12241 | ||
5afb4e99 DJ |
12242 | /* Check whether this DIE is interesting enough to save. Normally |
12243 | we would not be interested in members here, but there may be | |
12244 | later variables referencing them via DW_AT_specification (for | |
12245 | static members). */ | |
12246 | if (!load_all | |
12247 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 12248 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
12249 | && abbrev->tag != DW_TAG_enumerator |
12250 | && abbrev->tag != DW_TAG_subprogram | |
bc30ff58 | 12251 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 12252 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 12253 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 12254 | && abbrev->tag != DW_TAG_module |
95554aad TT |
12255 | && abbrev->tag != DW_TAG_member |
12256 | && abbrev->tag != DW_TAG_imported_unit) | |
72bf9492 DJ |
12257 | { |
12258 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 12259 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
12260 | continue; |
12261 | } | |
12262 | ||
dee91e82 DE |
12263 | info_ptr = read_partial_die (reader, part_die, abbrev, bytes_read, |
12264 | info_ptr); | |
72bf9492 DJ |
12265 | |
12266 | /* This two-pass algorithm for processing partial symbols has a | |
12267 | high cost in cache pressure. Thus, handle some simple cases | |
12268 | here which cover the majority of C partial symbols. DIEs | |
12269 | which neither have specification tags in them, nor could have | |
12270 | specification tags elsewhere pointing at them, can simply be | |
12271 | processed and discarded. | |
12272 | ||
12273 | This segment is also optional; scan_partial_symbols and | |
12274 | add_partial_symbol will handle these DIEs if we chain | |
12275 | them in normally. When compilers which do not emit large | |
12276 | quantities of duplicate debug information are more common, | |
12277 | this code can probably be removed. */ | |
12278 | ||
12279 | /* Any complete simple types at the top level (pretty much all | |
12280 | of them, for a language without namespaces), can be processed | |
12281 | directly. */ | |
12282 | if (parent_die == NULL | |
12283 | && part_die->has_specification == 0 | |
12284 | && part_die->is_declaration == 0 | |
d8228535 | 12285 | && ((part_die->tag == DW_TAG_typedef && !part_die->has_children) |
72bf9492 DJ |
12286 | || part_die->tag == DW_TAG_base_type |
12287 | || part_die->tag == DW_TAG_subrange_type)) | |
12288 | { | |
12289 | if (building_psymtab && part_die->name != NULL) | |
04a679b8 | 12290 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 12291 | VAR_DOMAIN, LOC_TYPEDEF, |
bb5ed363 DE |
12292 | &objfile->static_psymbols, |
12293 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
dee91e82 | 12294 | info_ptr = locate_pdi_sibling (reader, part_die, info_ptr); |
72bf9492 DJ |
12295 | continue; |
12296 | } | |
12297 | ||
d8228535 JK |
12298 | /* The exception for DW_TAG_typedef with has_children above is |
12299 | a workaround of GCC PR debug/47510. In the case of this complaint | |
12300 | type_name_no_tag_or_error will error on such types later. | |
12301 | ||
12302 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
12303 | it could not find the child DIEs referenced later, this is checked | |
12304 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
12305 | ||
12306 | if (part_die->tag == DW_TAG_typedef && part_die->has_children) | |
12307 | complaint (&symfile_complaints, | |
12308 | _("DW_TAG_typedef has childen - GCC PR debug/47510 bug " | |
12309 | "- DIE at 0x%x [in module %s]"), | |
b64f50a1 | 12310 | part_die->offset.sect_off, objfile->name); |
d8228535 | 12311 | |
72bf9492 DJ |
12312 | /* If we're at the second level, and we're an enumerator, and |
12313 | our parent has no specification (meaning possibly lives in a | |
12314 | namespace elsewhere), then we can add the partial symbol now | |
12315 | instead of queueing it. */ | |
12316 | if (part_die->tag == DW_TAG_enumerator | |
12317 | && parent_die != NULL | |
12318 | && parent_die->die_parent == NULL | |
12319 | && parent_die->tag == DW_TAG_enumeration_type | |
12320 | && parent_die->has_specification == 0) | |
12321 | { | |
12322 | if (part_die->name == NULL) | |
3e43a32a MS |
12323 | complaint (&symfile_complaints, |
12324 | _("malformed enumerator DIE ignored")); | |
72bf9492 | 12325 | else if (building_psymtab) |
04a679b8 | 12326 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 12327 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
12328 | (cu->language == language_cplus |
12329 | || cu->language == language_java) | |
bb5ed363 DE |
12330 | ? &objfile->global_psymbols |
12331 | : &objfile->static_psymbols, | |
12332 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
72bf9492 | 12333 | |
dee91e82 | 12334 | info_ptr = locate_pdi_sibling (reader, part_die, info_ptr); |
72bf9492 DJ |
12335 | continue; |
12336 | } | |
12337 | ||
12338 | /* We'll save this DIE so link it in. */ | |
12339 | part_die->die_parent = parent_die; | |
12340 | part_die->die_sibling = NULL; | |
12341 | part_die->die_child = NULL; | |
12342 | ||
12343 | if (last_die && last_die == parent_die) | |
12344 | last_die->die_child = part_die; | |
12345 | else if (last_die) | |
12346 | last_die->die_sibling = part_die; | |
12347 | ||
12348 | last_die = part_die; | |
12349 | ||
12350 | if (first_die == NULL) | |
12351 | first_die = part_die; | |
12352 | ||
12353 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
12354 | find interesting need to be in the hash table, because we | |
12355 | also have the parent/sibling/child chains; only those that we | |
12356 | might refer to by offset later during partial symbol reading. | |
12357 | ||
12358 | For now this means things that might have be the target of a | |
12359 | DW_AT_specification, DW_AT_abstract_origin, or | |
12360 | DW_AT_extension. DW_AT_extension will refer only to | |
12361 | namespaces; DW_AT_abstract_origin refers to functions (and | |
12362 | many things under the function DIE, but we do not recurse | |
12363 | into function DIEs during partial symbol reading) and | |
12364 | possibly variables as well; DW_AT_specification refers to | |
12365 | declarations. Declarations ought to have the DW_AT_declaration | |
12366 | flag. It happens that GCC forgets to put it in sometimes, but | |
12367 | only for functions, not for types. | |
12368 | ||
12369 | Adding more things than necessary to the hash table is harmless | |
12370 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
12371 | wasted time in find_partial_die, when we reread the compilation |
12372 | unit with load_all_dies set. */ | |
72bf9492 | 12373 | |
5afb4e99 | 12374 | if (load_all |
72929c62 | 12375 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 12376 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
12377 | || abbrev->tag == DW_TAG_variable |
12378 | || abbrev->tag == DW_TAG_namespace | |
12379 | || part_die->is_declaration) | |
12380 | { | |
12381 | void **slot; | |
12382 | ||
12383 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
b64f50a1 | 12384 | part_die->offset.sect_off, INSERT); |
72bf9492 DJ |
12385 | *slot = part_die; |
12386 | } | |
12387 | ||
12388 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
12389 | sizeof (struct partial_die_info)); | |
12390 | ||
12391 | /* For some DIEs we want to follow their children (if any). For C | |
bc30ff58 | 12392 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
12393 | languages we have to, so that we can get at method physnames |
12394 | to infer fully qualified class names, for DW_AT_specification, | |
12395 | and for C++ template arguments. For C++, we also look one level | |
12396 | inside functions to find template arguments (if the name of the | |
12397 | function does not already contain the template arguments). | |
bc30ff58 JB |
12398 | |
12399 | For Ada, we need to scan the children of subprograms and lexical | |
12400 | blocks as well because Ada allows the definition of nested | |
12401 | entities that could be interesting for the debugger, such as | |
12402 | nested subprograms for instance. */ | |
72bf9492 | 12403 | if (last_die->has_children |
5afb4e99 DJ |
12404 | && (load_all |
12405 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 12406 | || last_die->tag == DW_TAG_module |
72bf9492 | 12407 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
12408 | || (cu->language == language_cplus |
12409 | && last_die->tag == DW_TAG_subprogram | |
12410 | && (last_die->name == NULL | |
12411 | || strchr (last_die->name, '<') == NULL)) | |
72bf9492 DJ |
12412 | || (cu->language != language_c |
12413 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 12414 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 12415 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 JB |
12416 | || last_die->tag == DW_TAG_union_type)) |
12417 | || (cu->language == language_ada | |
12418 | && (last_die->tag == DW_TAG_subprogram | |
12419 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
12420 | { |
12421 | nesting_level++; | |
12422 | parent_die = last_die; | |
12423 | continue; | |
12424 | } | |
12425 | ||
12426 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 12427 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
12428 | |
12429 | /* Back to the top, do it again. */ | |
12430 | } | |
12431 | } | |
12432 | ||
c906108c SS |
12433 | /* Read a minimal amount of information into the minimal die structure. */ |
12434 | ||
fe1b8b76 | 12435 | static gdb_byte * |
dee91e82 DE |
12436 | read_partial_die (const struct die_reader_specs *reader, |
12437 | struct partial_die_info *part_die, | |
12438 | struct abbrev_info *abbrev, unsigned int abbrev_len, | |
12439 | gdb_byte *info_ptr) | |
c906108c | 12440 | { |
dee91e82 | 12441 | struct dwarf2_cu *cu = reader->cu; |
bb5ed363 | 12442 | struct objfile *objfile = cu->objfile; |
dee91e82 | 12443 | gdb_byte *buffer = reader->buffer; |
fa238c03 | 12444 | unsigned int i; |
c906108c | 12445 | struct attribute attr; |
c5aa993b | 12446 | int has_low_pc_attr = 0; |
c906108c | 12447 | int has_high_pc_attr = 0; |
91da1414 | 12448 | int high_pc_relative = 0; |
c906108c | 12449 | |
72bf9492 | 12450 | memset (part_die, 0, sizeof (struct partial_die_info)); |
c906108c | 12451 | |
b64f50a1 | 12452 | part_die->offset.sect_off = info_ptr - buffer; |
72bf9492 DJ |
12453 | |
12454 | info_ptr += abbrev_len; | |
12455 | ||
12456 | if (abbrev == NULL) | |
12457 | return info_ptr; | |
12458 | ||
c906108c SS |
12459 | part_die->tag = abbrev->tag; |
12460 | part_die->has_children = abbrev->has_children; | |
c906108c SS |
12461 | |
12462 | for (i = 0; i < abbrev->num_attrs; ++i) | |
12463 | { | |
dee91e82 | 12464 | info_ptr = read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
c906108c SS |
12465 | |
12466 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 12467 | partial symbol table. */ |
c906108c SS |
12468 | switch (attr.name) |
12469 | { | |
12470 | case DW_AT_name: | |
71c25dea TT |
12471 | switch (part_die->tag) |
12472 | { | |
12473 | case DW_TAG_compile_unit: | |
95554aad | 12474 | case DW_TAG_partial_unit: |
348e048f | 12475 | case DW_TAG_type_unit: |
71c25dea TT |
12476 | /* Compilation units have a DW_AT_name that is a filename, not |
12477 | a source language identifier. */ | |
12478 | case DW_TAG_enumeration_type: | |
12479 | case DW_TAG_enumerator: | |
12480 | /* These tags always have simple identifiers already; no need | |
12481 | to canonicalize them. */ | |
12482 | part_die->name = DW_STRING (&attr); | |
12483 | break; | |
12484 | default: | |
12485 | part_die->name | |
12486 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, | |
bb5ed363 | 12487 | &objfile->objfile_obstack); |
71c25dea TT |
12488 | break; |
12489 | } | |
c906108c | 12490 | break; |
31ef98ae | 12491 | case DW_AT_linkage_name: |
c906108c | 12492 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
12493 | /* Note that both forms of linkage name might appear. We |
12494 | assume they will be the same, and we only store the last | |
12495 | one we see. */ | |
94af9270 KS |
12496 | if (cu->language == language_ada) |
12497 | part_die->name = DW_STRING (&attr); | |
abc72ce4 | 12498 | part_die->linkage_name = DW_STRING (&attr); |
c906108c SS |
12499 | break; |
12500 | case DW_AT_low_pc: | |
12501 | has_low_pc_attr = 1; | |
12502 | part_die->lowpc = DW_ADDR (&attr); | |
12503 | break; | |
12504 | case DW_AT_high_pc: | |
12505 | has_high_pc_attr = 1; | |
3019eac3 DE |
12506 | if (attr.form == DW_FORM_addr |
12507 | || attr.form == DW_FORM_GNU_addr_index) | |
91da1414 MW |
12508 | part_die->highpc = DW_ADDR (&attr); |
12509 | else | |
12510 | { | |
12511 | high_pc_relative = 1; | |
12512 | part_die->highpc = DW_UNSND (&attr); | |
12513 | } | |
c906108c SS |
12514 | break; |
12515 | case DW_AT_location: | |
0963b4bd | 12516 | /* Support the .debug_loc offsets. */ |
8e19ed76 PS |
12517 | if (attr_form_is_block (&attr)) |
12518 | { | |
95554aad | 12519 | part_die->d.locdesc = DW_BLOCK (&attr); |
8e19ed76 | 12520 | } |
3690dd37 | 12521 | else if (attr_form_is_section_offset (&attr)) |
8e19ed76 | 12522 | { |
4d3c2250 | 12523 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
12524 | } |
12525 | else | |
12526 | { | |
4d3c2250 KB |
12527 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
12528 | "partial symbol information"); | |
8e19ed76 | 12529 | } |
c906108c | 12530 | break; |
c906108c SS |
12531 | case DW_AT_external: |
12532 | part_die->is_external = DW_UNSND (&attr); | |
12533 | break; | |
12534 | case DW_AT_declaration: | |
12535 | part_die->is_declaration = DW_UNSND (&attr); | |
12536 | break; | |
12537 | case DW_AT_type: | |
12538 | part_die->has_type = 1; | |
12539 | break; | |
12540 | case DW_AT_abstract_origin: | |
12541 | case DW_AT_specification: | |
72bf9492 DJ |
12542 | case DW_AT_extension: |
12543 | part_die->has_specification = 1; | |
c764a876 | 12544 | part_die->spec_offset = dwarf2_get_ref_die_offset (&attr); |
c906108c SS |
12545 | break; |
12546 | case DW_AT_sibling: | |
12547 | /* Ignore absolute siblings, they might point outside of | |
12548 | the current compile unit. */ | |
12549 | if (attr.form == DW_FORM_ref_addr) | |
3e43a32a MS |
12550 | complaint (&symfile_complaints, |
12551 | _("ignoring absolute DW_AT_sibling")); | |
c906108c | 12552 | else |
b64f50a1 | 12553 | part_die->sibling = buffer + dwarf2_get_ref_die_offset (&attr).sect_off; |
c906108c | 12554 | break; |
fa4028e9 JB |
12555 | case DW_AT_byte_size: |
12556 | part_die->has_byte_size = 1; | |
12557 | break; | |
68511cec CES |
12558 | case DW_AT_calling_convention: |
12559 | /* DWARF doesn't provide a way to identify a program's source-level | |
12560 | entry point. DW_AT_calling_convention attributes are only meant | |
12561 | to describe functions' calling conventions. | |
12562 | ||
12563 | However, because it's a necessary piece of information in | |
12564 | Fortran, and because DW_CC_program is the only piece of debugging | |
12565 | information whose definition refers to a 'main program' at all, | |
12566 | several compilers have begun marking Fortran main programs with | |
12567 | DW_CC_program --- even when those functions use the standard | |
12568 | calling conventions. | |
12569 | ||
12570 | So until DWARF specifies a way to provide this information and | |
12571 | compilers pick up the new representation, we'll support this | |
12572 | practice. */ | |
12573 | if (DW_UNSND (&attr) == DW_CC_program | |
12574 | && cu->language == language_fortran) | |
01f8c46d JK |
12575 | { |
12576 | set_main_name (part_die->name); | |
12577 | ||
12578 | /* As this DIE has a static linkage the name would be difficult | |
12579 | to look up later. */ | |
12580 | language_of_main = language_fortran; | |
12581 | } | |
68511cec | 12582 | break; |
481860b3 GB |
12583 | case DW_AT_inline: |
12584 | if (DW_UNSND (&attr) == DW_INL_inlined | |
12585 | || DW_UNSND (&attr) == DW_INL_declared_inlined) | |
12586 | part_die->may_be_inlined = 1; | |
12587 | break; | |
95554aad TT |
12588 | |
12589 | case DW_AT_import: | |
12590 | if (part_die->tag == DW_TAG_imported_unit) | |
12591 | part_die->d.offset = dwarf2_get_ref_die_offset (&attr); | |
12592 | break; | |
12593 | ||
c906108c SS |
12594 | default: |
12595 | break; | |
12596 | } | |
12597 | } | |
12598 | ||
91da1414 MW |
12599 | if (high_pc_relative) |
12600 | part_die->highpc += part_die->lowpc; | |
12601 | ||
9373cf26 JK |
12602 | if (has_low_pc_attr && has_high_pc_attr) |
12603 | { | |
12604 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
12605 | eliminate duplicate copies of functions and vtables and such. | |
12606 | The linker will arbitrarily choose one and discard the others. | |
12607 | The AT_*_pc values for such functions refer to local labels in | |
12608 | these sections. If the section from that file was discarded, the | |
12609 | labels are not in the output, so the relocs get a value of 0. | |
12610 | If this is a discarded function, mark the pc bounds as invalid, | |
12611 | so that GDB will ignore it. */ | |
12612 | if (part_die->lowpc == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
12613 | { | |
bb5ed363 | 12614 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
12615 | |
12616 | complaint (&symfile_complaints, | |
12617 | _("DW_AT_low_pc %s is zero " | |
12618 | "for DIE at 0x%x [in module %s]"), | |
12619 | paddress (gdbarch, part_die->lowpc), | |
b64f50a1 | 12620 | part_die->offset.sect_off, objfile->name); |
9373cf26 JK |
12621 | } |
12622 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
12623 | else if (part_die->lowpc >= part_die->highpc) | |
12624 | { | |
bb5ed363 | 12625 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
12626 | |
12627 | complaint (&symfile_complaints, | |
12628 | _("DW_AT_low_pc %s is not < DW_AT_high_pc %s " | |
12629 | "for DIE at 0x%x [in module %s]"), | |
12630 | paddress (gdbarch, part_die->lowpc), | |
12631 | paddress (gdbarch, part_die->highpc), | |
b64f50a1 | 12632 | part_die->offset.sect_off, objfile->name); |
9373cf26 JK |
12633 | } |
12634 | else | |
12635 | part_die->has_pc_info = 1; | |
12636 | } | |
85cbf3d3 | 12637 | |
c906108c SS |
12638 | return info_ptr; |
12639 | } | |
12640 | ||
72bf9492 DJ |
12641 | /* Find a cached partial DIE at OFFSET in CU. */ |
12642 | ||
12643 | static struct partial_die_info * | |
b64f50a1 | 12644 | find_partial_die_in_comp_unit (sect_offset offset, struct dwarf2_cu *cu) |
72bf9492 DJ |
12645 | { |
12646 | struct partial_die_info *lookup_die = NULL; | |
12647 | struct partial_die_info part_die; | |
12648 | ||
12649 | part_die.offset = offset; | |
b64f50a1 JK |
12650 | lookup_die = htab_find_with_hash (cu->partial_dies, &part_die, |
12651 | offset.sect_off); | |
72bf9492 | 12652 | |
72bf9492 DJ |
12653 | return lookup_die; |
12654 | } | |
12655 | ||
348e048f DE |
12656 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
12657 | except in the case of .debug_types DIEs which do not reference | |
12658 | outside their CU (they do however referencing other types via | |
55f1336d | 12659 | DW_FORM_ref_sig8). */ |
72bf9492 DJ |
12660 | |
12661 | static struct partial_die_info * | |
b64f50a1 | 12662 | find_partial_die (sect_offset offset, struct dwarf2_cu *cu) |
72bf9492 | 12663 | { |
bb5ed363 | 12664 | struct objfile *objfile = cu->objfile; |
5afb4e99 DJ |
12665 | struct dwarf2_per_cu_data *per_cu = NULL; |
12666 | struct partial_die_info *pd = NULL; | |
72bf9492 | 12667 | |
45452591 | 12668 | if (offset_in_cu_p (&cu->header, offset)) |
5afb4e99 DJ |
12669 | { |
12670 | pd = find_partial_die_in_comp_unit (offset, cu); | |
12671 | if (pd != NULL) | |
12672 | return pd; | |
0d99eb77 DE |
12673 | /* We missed recording what we needed. |
12674 | Load all dies and try again. */ | |
12675 | per_cu = cu->per_cu; | |
5afb4e99 | 12676 | } |
0d99eb77 DE |
12677 | else |
12678 | { | |
12679 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 12680 | if (cu->per_cu->is_debug_types) |
0d99eb77 DE |
12681 | { |
12682 | error (_("Dwarf Error: Type Unit at offset 0x%lx contains" | |
12683 | " external reference to offset 0x%lx [in module %s].\n"), | |
12684 | (long) cu->header.offset.sect_off, (long) offset.sect_off, | |
12685 | bfd_get_filename (objfile->obfd)); | |
12686 | } | |
12687 | per_cu = dwarf2_find_containing_comp_unit (offset, objfile); | |
72bf9492 | 12688 | |
0d99eb77 DE |
12689 | if (per_cu->cu == NULL || per_cu->cu->partial_dies == NULL) |
12690 | load_partial_comp_unit (per_cu); | |
ae038cb0 | 12691 | |
0d99eb77 DE |
12692 | per_cu->cu->last_used = 0; |
12693 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
12694 | } | |
5afb4e99 | 12695 | |
dee91e82 DE |
12696 | /* If we didn't find it, and not all dies have been loaded, |
12697 | load them all and try again. */ | |
12698 | ||
5afb4e99 DJ |
12699 | if (pd == NULL && per_cu->load_all_dies == 0) |
12700 | { | |
5afb4e99 | 12701 | per_cu->load_all_dies = 1; |
fd820528 DE |
12702 | |
12703 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
12704 | THIS_CU->cu may already be in use. So we can't just free it and | |
12705 | replace its DIEs with the ones we read in. Instead, we leave those | |
12706 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
12707 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
12708 | set. */ | |
dee91e82 | 12709 | load_partial_comp_unit (per_cu); |
5afb4e99 DJ |
12710 | |
12711 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
12712 | } | |
12713 | ||
12714 | if (pd == NULL) | |
12715 | internal_error (__FILE__, __LINE__, | |
3e43a32a MS |
12716 | _("could not find partial DIE 0x%x " |
12717 | "in cache [from module %s]\n"), | |
b64f50a1 | 12718 | offset.sect_off, bfd_get_filename (objfile->obfd)); |
5afb4e99 | 12719 | return pd; |
72bf9492 DJ |
12720 | } |
12721 | ||
abc72ce4 DE |
12722 | /* See if we can figure out if the class lives in a namespace. We do |
12723 | this by looking for a member function; its demangled name will | |
12724 | contain namespace info, if there is any. */ | |
12725 | ||
12726 | static void | |
12727 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
12728 | struct dwarf2_cu *cu) | |
12729 | { | |
12730 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
12731 | what template types look like, because the demangler | |
12732 | frequently doesn't give the same name as the debug info. We | |
12733 | could fix this by only using the demangled name to get the | |
12734 | prefix (but see comment in read_structure_type). */ | |
12735 | ||
12736 | struct partial_die_info *real_pdi; | |
12737 | struct partial_die_info *child_pdi; | |
12738 | ||
12739 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
12740 | we should not do this. We'll prepend the parent's fully qualified | |
12741 | name when we create the partial symbol. */ | |
12742 | ||
12743 | real_pdi = struct_pdi; | |
12744 | while (real_pdi->has_specification) | |
12745 | real_pdi = find_partial_die (real_pdi->spec_offset, cu); | |
12746 | ||
12747 | if (real_pdi->die_parent != NULL) | |
12748 | return; | |
12749 | ||
12750 | for (child_pdi = struct_pdi->die_child; | |
12751 | child_pdi != NULL; | |
12752 | child_pdi = child_pdi->die_sibling) | |
12753 | { | |
12754 | if (child_pdi->tag == DW_TAG_subprogram | |
12755 | && child_pdi->linkage_name != NULL) | |
12756 | { | |
12757 | char *actual_class_name | |
12758 | = language_class_name_from_physname (cu->language_defn, | |
12759 | child_pdi->linkage_name); | |
12760 | if (actual_class_name != NULL) | |
12761 | { | |
12762 | struct_pdi->name | |
12763 | = obsavestring (actual_class_name, | |
12764 | strlen (actual_class_name), | |
12765 | &cu->objfile->objfile_obstack); | |
12766 | xfree (actual_class_name); | |
12767 | } | |
12768 | break; | |
12769 | } | |
12770 | } | |
12771 | } | |
12772 | ||
72bf9492 DJ |
12773 | /* Adjust PART_DIE before generating a symbol for it. This function |
12774 | may set the is_external flag or change the DIE's name. */ | |
12775 | ||
12776 | static void | |
12777 | fixup_partial_die (struct partial_die_info *part_die, | |
12778 | struct dwarf2_cu *cu) | |
12779 | { | |
abc72ce4 DE |
12780 | /* Once we've fixed up a die, there's no point in doing so again. |
12781 | This also avoids a memory leak if we were to call | |
12782 | guess_partial_die_structure_name multiple times. */ | |
12783 | if (part_die->fixup_called) | |
12784 | return; | |
12785 | ||
72bf9492 DJ |
12786 | /* If we found a reference attribute and the DIE has no name, try |
12787 | to find a name in the referred to DIE. */ | |
12788 | ||
12789 | if (part_die->name == NULL && part_die->has_specification) | |
12790 | { | |
12791 | struct partial_die_info *spec_die; | |
72bf9492 | 12792 | |
10b3939b | 12793 | spec_die = find_partial_die (part_die->spec_offset, cu); |
72bf9492 | 12794 | |
10b3939b | 12795 | fixup_partial_die (spec_die, cu); |
72bf9492 DJ |
12796 | |
12797 | if (spec_die->name) | |
12798 | { | |
12799 | part_die->name = spec_die->name; | |
12800 | ||
12801 | /* Copy DW_AT_external attribute if it is set. */ | |
12802 | if (spec_die->is_external) | |
12803 | part_die->is_external = spec_die->is_external; | |
12804 | } | |
12805 | } | |
12806 | ||
12807 | /* Set default names for some unnamed DIEs. */ | |
72bf9492 DJ |
12808 | |
12809 | if (part_die->name == NULL && part_die->tag == DW_TAG_namespace) | |
2b1dbab0 | 12810 | part_die->name = CP_ANONYMOUS_NAMESPACE_STR; |
72bf9492 | 12811 | |
abc72ce4 DE |
12812 | /* If there is no parent die to provide a namespace, and there are |
12813 | children, see if we can determine the namespace from their linkage | |
122d1940 | 12814 | name. */ |
abc72ce4 | 12815 | if (cu->language == language_cplus |
8b70b953 | 12816 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
12817 | && part_die->die_parent == NULL |
12818 | && part_die->has_children | |
12819 | && (part_die->tag == DW_TAG_class_type | |
12820 | || part_die->tag == DW_TAG_structure_type | |
12821 | || part_die->tag == DW_TAG_union_type)) | |
12822 | guess_partial_die_structure_name (part_die, cu); | |
12823 | ||
53832f31 TT |
12824 | /* GCC might emit a nameless struct or union that has a linkage |
12825 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
12826 | if (part_die->name == NULL | |
96408a79 SA |
12827 | && (part_die->tag == DW_TAG_class_type |
12828 | || part_die->tag == DW_TAG_interface_type | |
12829 | || part_die->tag == DW_TAG_structure_type | |
12830 | || part_die->tag == DW_TAG_union_type) | |
53832f31 TT |
12831 | && part_die->linkage_name != NULL) |
12832 | { | |
12833 | char *demangled; | |
12834 | ||
12835 | demangled = cplus_demangle (part_die->linkage_name, DMGL_TYPES); | |
12836 | if (demangled) | |
12837 | { | |
96408a79 SA |
12838 | const char *base; |
12839 | ||
12840 | /* Strip any leading namespaces/classes, keep only the base name. | |
12841 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
12842 | base = strrchr (demangled, ':'); | |
12843 | if (base && base > demangled && base[-1] == ':') | |
12844 | base++; | |
12845 | else | |
12846 | base = demangled; | |
12847 | ||
12848 | part_die->name = obsavestring (base, strlen (base), | |
53832f31 TT |
12849 | &cu->objfile->objfile_obstack); |
12850 | xfree (demangled); | |
12851 | } | |
12852 | } | |
12853 | ||
abc72ce4 | 12854 | part_die->fixup_called = 1; |
72bf9492 DJ |
12855 | } |
12856 | ||
a8329558 | 12857 | /* Read an attribute value described by an attribute form. */ |
c906108c | 12858 | |
fe1b8b76 | 12859 | static gdb_byte * |
dee91e82 DE |
12860 | read_attribute_value (const struct die_reader_specs *reader, |
12861 | struct attribute *attr, unsigned form, | |
12862 | gdb_byte *info_ptr) | |
c906108c | 12863 | { |
dee91e82 DE |
12864 | struct dwarf2_cu *cu = reader->cu; |
12865 | bfd *abfd = reader->abfd; | |
e7c27a73 | 12866 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
12867 | unsigned int bytes_read; |
12868 | struct dwarf_block *blk; | |
12869 | ||
a8329558 KW |
12870 | attr->form = form; |
12871 | switch (form) | |
c906108c | 12872 | { |
c906108c | 12873 | case DW_FORM_ref_addr: |
ae411497 | 12874 | if (cu->header.version == 2) |
4568ecf9 | 12875 | DW_UNSND (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
ae411497 | 12876 | else |
4568ecf9 DE |
12877 | DW_UNSND (attr) = read_offset (abfd, info_ptr, |
12878 | &cu->header, &bytes_read); | |
ae411497 TT |
12879 | info_ptr += bytes_read; |
12880 | break; | |
12881 | case DW_FORM_addr: | |
e7c27a73 | 12882 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
107d2387 | 12883 | info_ptr += bytes_read; |
c906108c SS |
12884 | break; |
12885 | case DW_FORM_block2: | |
7b5a2f43 | 12886 | blk = dwarf_alloc_block (cu); |
c906108c SS |
12887 | blk->size = read_2_bytes (abfd, info_ptr); |
12888 | info_ptr += 2; | |
12889 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
12890 | info_ptr += blk->size; | |
12891 | DW_BLOCK (attr) = blk; | |
12892 | break; | |
12893 | case DW_FORM_block4: | |
7b5a2f43 | 12894 | blk = dwarf_alloc_block (cu); |
c906108c SS |
12895 | blk->size = read_4_bytes (abfd, info_ptr); |
12896 | info_ptr += 4; | |
12897 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
12898 | info_ptr += blk->size; | |
12899 | DW_BLOCK (attr) = blk; | |
12900 | break; | |
12901 | case DW_FORM_data2: | |
12902 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
12903 | info_ptr += 2; | |
12904 | break; | |
12905 | case DW_FORM_data4: | |
12906 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
12907 | info_ptr += 4; | |
12908 | break; | |
12909 | case DW_FORM_data8: | |
12910 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
12911 | info_ptr += 8; | |
12912 | break; | |
2dc7f7b3 TT |
12913 | case DW_FORM_sec_offset: |
12914 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
12915 | info_ptr += bytes_read; | |
12916 | break; | |
c906108c | 12917 | case DW_FORM_string: |
9b1c24c8 | 12918 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 12919 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
12920 | info_ptr += bytes_read; |
12921 | break; | |
4bdf3d34 JJ |
12922 | case DW_FORM_strp: |
12923 | DW_STRING (attr) = read_indirect_string (abfd, info_ptr, cu_header, | |
12924 | &bytes_read); | |
8285870a | 12925 | DW_STRING_IS_CANONICAL (attr) = 0; |
4bdf3d34 JJ |
12926 | info_ptr += bytes_read; |
12927 | break; | |
2dc7f7b3 | 12928 | case DW_FORM_exprloc: |
c906108c | 12929 | case DW_FORM_block: |
7b5a2f43 | 12930 | blk = dwarf_alloc_block (cu); |
c906108c SS |
12931 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
12932 | info_ptr += bytes_read; | |
12933 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
12934 | info_ptr += blk->size; | |
12935 | DW_BLOCK (attr) = blk; | |
12936 | break; | |
12937 | case DW_FORM_block1: | |
7b5a2f43 | 12938 | blk = dwarf_alloc_block (cu); |
c906108c SS |
12939 | blk->size = read_1_byte (abfd, info_ptr); |
12940 | info_ptr += 1; | |
12941 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
12942 | info_ptr += blk->size; | |
12943 | DW_BLOCK (attr) = blk; | |
12944 | break; | |
12945 | case DW_FORM_data1: | |
12946 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
12947 | info_ptr += 1; | |
12948 | break; | |
12949 | case DW_FORM_flag: | |
12950 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
12951 | info_ptr += 1; | |
12952 | break; | |
2dc7f7b3 TT |
12953 | case DW_FORM_flag_present: |
12954 | DW_UNSND (attr) = 1; | |
12955 | break; | |
c906108c SS |
12956 | case DW_FORM_sdata: |
12957 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
12958 | info_ptr += bytes_read; | |
12959 | break; | |
12960 | case DW_FORM_udata: | |
12961 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
12962 | info_ptr += bytes_read; | |
12963 | break; | |
12964 | case DW_FORM_ref1: | |
4568ecf9 DE |
12965 | DW_UNSND (attr) = (cu->header.offset.sect_off |
12966 | + read_1_byte (abfd, info_ptr)); | |
c906108c SS |
12967 | info_ptr += 1; |
12968 | break; | |
12969 | case DW_FORM_ref2: | |
4568ecf9 DE |
12970 | DW_UNSND (attr) = (cu->header.offset.sect_off |
12971 | + read_2_bytes (abfd, info_ptr)); | |
c906108c SS |
12972 | info_ptr += 2; |
12973 | break; | |
12974 | case DW_FORM_ref4: | |
4568ecf9 DE |
12975 | DW_UNSND (attr) = (cu->header.offset.sect_off |
12976 | + read_4_bytes (abfd, info_ptr)); | |
c906108c SS |
12977 | info_ptr += 4; |
12978 | break; | |
613e1657 | 12979 | case DW_FORM_ref8: |
4568ecf9 DE |
12980 | DW_UNSND (attr) = (cu->header.offset.sect_off |
12981 | + read_8_bytes (abfd, info_ptr)); | |
613e1657 KB |
12982 | info_ptr += 8; |
12983 | break; | |
55f1336d | 12984 | case DW_FORM_ref_sig8: |
348e048f DE |
12985 | /* Convert the signature to something we can record in DW_UNSND |
12986 | for later lookup. | |
12987 | NOTE: This is NULL if the type wasn't found. */ | |
12988 | DW_SIGNATURED_TYPE (attr) = | |
e319fa28 | 12989 | lookup_signatured_type (read_8_bytes (abfd, info_ptr)); |
348e048f DE |
12990 | info_ptr += 8; |
12991 | break; | |
c906108c | 12992 | case DW_FORM_ref_udata: |
4568ecf9 DE |
12993 | DW_UNSND (attr) = (cu->header.offset.sect_off |
12994 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); | |
c906108c SS |
12995 | info_ptr += bytes_read; |
12996 | break; | |
c906108c | 12997 | case DW_FORM_indirect: |
a8329558 KW |
12998 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
12999 | info_ptr += bytes_read; | |
dee91e82 | 13000 | info_ptr = read_attribute_value (reader, attr, form, info_ptr); |
a8329558 | 13001 | break; |
3019eac3 DE |
13002 | case DW_FORM_GNU_addr_index: |
13003 | if (reader->dwo_file == NULL) | |
13004 | { | |
13005 | /* For now flag a hard error. | |
13006 | Later we can turn this into a complaint. */ | |
13007 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
13008 | dwarf_form_name (form), | |
13009 | bfd_get_filename (abfd)); | |
13010 | } | |
13011 | DW_ADDR (attr) = read_addr_index_from_leb128 (cu, info_ptr, &bytes_read); | |
13012 | info_ptr += bytes_read; | |
13013 | break; | |
13014 | case DW_FORM_GNU_str_index: | |
13015 | if (reader->dwo_file == NULL) | |
13016 | { | |
13017 | /* For now flag a hard error. | |
13018 | Later we can turn this into a complaint if warranted. */ | |
13019 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
13020 | dwarf_form_name (form), | |
13021 | bfd_get_filename (abfd)); | |
13022 | } | |
13023 | { | |
13024 | ULONGEST str_index = | |
13025 | read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
13026 | ||
13027 | DW_STRING (attr) = read_str_index (reader, cu, str_index); | |
13028 | DW_STRING_IS_CANONICAL (attr) = 0; | |
13029 | info_ptr += bytes_read; | |
13030 | } | |
13031 | break; | |
c906108c | 13032 | default: |
8a3fe4f8 | 13033 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
13034 | dwarf_form_name (form), |
13035 | bfd_get_filename (abfd)); | |
c906108c | 13036 | } |
28e94949 JB |
13037 | |
13038 | /* We have seen instances where the compiler tried to emit a byte | |
13039 | size attribute of -1 which ended up being encoded as an unsigned | |
13040 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
13041 | an object of this size seems pretty unlikely so we can relatively | |
13042 | safely treat these cases as if the size attribute was invalid and | |
13043 | treat them as zero by default. */ | |
13044 | if (attr->name == DW_AT_byte_size | |
13045 | && form == DW_FORM_data4 | |
13046 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
13047 | { |
13048 | complaint | |
13049 | (&symfile_complaints, | |
43bbcdc2 PH |
13050 | _("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
13051 | hex_string (DW_UNSND (attr))); | |
01c66ae6 JB |
13052 | DW_UNSND (attr) = 0; |
13053 | } | |
28e94949 | 13054 | |
c906108c SS |
13055 | return info_ptr; |
13056 | } | |
13057 | ||
a8329558 KW |
13058 | /* Read an attribute described by an abbreviated attribute. */ |
13059 | ||
fe1b8b76 | 13060 | static gdb_byte * |
dee91e82 DE |
13061 | read_attribute (const struct die_reader_specs *reader, |
13062 | struct attribute *attr, struct attr_abbrev *abbrev, | |
13063 | gdb_byte *info_ptr) | |
a8329558 KW |
13064 | { |
13065 | attr->name = abbrev->name; | |
dee91e82 | 13066 | return read_attribute_value (reader, attr, abbrev->form, info_ptr); |
a8329558 KW |
13067 | } |
13068 | ||
0963b4bd | 13069 | /* Read dwarf information from a buffer. */ |
c906108c SS |
13070 | |
13071 | static unsigned int | |
fe1b8b76 | 13072 | read_1_byte (bfd *abfd, gdb_byte *buf) |
c906108c | 13073 | { |
fe1b8b76 | 13074 | return bfd_get_8 (abfd, buf); |
c906108c SS |
13075 | } |
13076 | ||
13077 | static int | |
fe1b8b76 | 13078 | read_1_signed_byte (bfd *abfd, gdb_byte *buf) |
c906108c | 13079 | { |
fe1b8b76 | 13080 | return bfd_get_signed_8 (abfd, buf); |
c906108c SS |
13081 | } |
13082 | ||
13083 | static unsigned int | |
fe1b8b76 | 13084 | read_2_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 13085 | { |
fe1b8b76 | 13086 | return bfd_get_16 (abfd, buf); |
c906108c SS |
13087 | } |
13088 | ||
21ae7a4d JK |
13089 | static int |
13090 | read_2_signed_bytes (bfd *abfd, gdb_byte *buf) | |
13091 | { | |
13092 | return bfd_get_signed_16 (abfd, buf); | |
13093 | } | |
13094 | ||
c906108c | 13095 | static unsigned int |
fe1b8b76 | 13096 | read_4_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 13097 | { |
fe1b8b76 | 13098 | return bfd_get_32 (abfd, buf); |
c906108c SS |
13099 | } |
13100 | ||
21ae7a4d JK |
13101 | static int |
13102 | read_4_signed_bytes (bfd *abfd, gdb_byte *buf) | |
13103 | { | |
13104 | return bfd_get_signed_32 (abfd, buf); | |
13105 | } | |
13106 | ||
93311388 | 13107 | static ULONGEST |
fe1b8b76 | 13108 | read_8_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 13109 | { |
fe1b8b76 | 13110 | return bfd_get_64 (abfd, buf); |
c906108c SS |
13111 | } |
13112 | ||
13113 | static CORE_ADDR | |
fe1b8b76 | 13114 | read_address (bfd *abfd, gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 13115 | unsigned int *bytes_read) |
c906108c | 13116 | { |
e7c27a73 | 13117 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
13118 | CORE_ADDR retval = 0; |
13119 | ||
107d2387 | 13120 | if (cu_header->signed_addr_p) |
c906108c | 13121 | { |
107d2387 AC |
13122 | switch (cu_header->addr_size) |
13123 | { | |
13124 | case 2: | |
fe1b8b76 | 13125 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
13126 | break; |
13127 | case 4: | |
fe1b8b76 | 13128 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
13129 | break; |
13130 | case 8: | |
fe1b8b76 | 13131 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
13132 | break; |
13133 | default: | |
8e65ff28 | 13134 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 13135 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 13136 | bfd_get_filename (abfd)); |
107d2387 AC |
13137 | } |
13138 | } | |
13139 | else | |
13140 | { | |
13141 | switch (cu_header->addr_size) | |
13142 | { | |
13143 | case 2: | |
fe1b8b76 | 13144 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
13145 | break; |
13146 | case 4: | |
fe1b8b76 | 13147 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
13148 | break; |
13149 | case 8: | |
fe1b8b76 | 13150 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
13151 | break; |
13152 | default: | |
8e65ff28 | 13153 | internal_error (__FILE__, __LINE__, |
a73c6dcd MS |
13154 | _("read_address: bad switch, " |
13155 | "unsigned [in module %s]"), | |
659b0389 | 13156 | bfd_get_filename (abfd)); |
107d2387 | 13157 | } |
c906108c | 13158 | } |
64367e0a | 13159 | |
107d2387 AC |
13160 | *bytes_read = cu_header->addr_size; |
13161 | return retval; | |
c906108c SS |
13162 | } |
13163 | ||
f7ef9339 | 13164 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
13165 | specification allows the initial length to take up either 4 bytes |
13166 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
13167 | bytes describe the length and all offsets will be 8 bytes in length | |
13168 | instead of 4. | |
13169 | ||
f7ef9339 KB |
13170 | An older, non-standard 64-bit format is also handled by this |
13171 | function. The older format in question stores the initial length | |
13172 | as an 8-byte quantity without an escape value. Lengths greater | |
13173 | than 2^32 aren't very common which means that the initial 4 bytes | |
13174 | is almost always zero. Since a length value of zero doesn't make | |
13175 | sense for the 32-bit format, this initial zero can be considered to | |
13176 | be an escape value which indicates the presence of the older 64-bit | |
13177 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
13178 | greater than 4GB. If it becomes necessary to handle lengths |
13179 | somewhat larger than 4GB, we could allow other small values (such | |
13180 | as the non-sensical values of 1, 2, and 3) to also be used as | |
13181 | escape values indicating the presence of the old format. | |
f7ef9339 | 13182 | |
917c78fc MK |
13183 | The value returned via bytes_read should be used to increment the |
13184 | relevant pointer after calling read_initial_length(). | |
c764a876 | 13185 | |
613e1657 KB |
13186 | [ Note: read_initial_length() and read_offset() are based on the |
13187 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 13188 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
13189 | from: |
13190 | ||
f7ef9339 | 13191 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
6e70227d | 13192 | |
613e1657 KB |
13193 | This document is only a draft and is subject to change. (So beware.) |
13194 | ||
f7ef9339 | 13195 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
13196 | determined empirically by examining 64-bit ELF files produced by |
13197 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
13198 | |
13199 | - Kevin, July 16, 2002 | |
613e1657 KB |
13200 | ] */ |
13201 | ||
13202 | static LONGEST | |
c764a876 | 13203 | read_initial_length (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read) |
613e1657 | 13204 | { |
fe1b8b76 | 13205 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 13206 | |
dd373385 | 13207 | if (length == 0xffffffff) |
613e1657 | 13208 | { |
fe1b8b76 | 13209 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 13210 | *bytes_read = 12; |
613e1657 | 13211 | } |
dd373385 | 13212 | else if (length == 0) |
f7ef9339 | 13213 | { |
dd373385 | 13214 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 13215 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 13216 | *bytes_read = 8; |
f7ef9339 | 13217 | } |
613e1657 KB |
13218 | else |
13219 | { | |
13220 | *bytes_read = 4; | |
613e1657 KB |
13221 | } |
13222 | ||
c764a876 DE |
13223 | return length; |
13224 | } | |
dd373385 | 13225 | |
c764a876 DE |
13226 | /* Cover function for read_initial_length. |
13227 | Returns the length of the object at BUF, and stores the size of the | |
13228 | initial length in *BYTES_READ and stores the size that offsets will be in | |
13229 | *OFFSET_SIZE. | |
13230 | If the initial length size is not equivalent to that specified in | |
13231 | CU_HEADER then issue a complaint. | |
13232 | This is useful when reading non-comp-unit headers. */ | |
dd373385 | 13233 | |
c764a876 DE |
13234 | static LONGEST |
13235 | read_checked_initial_length_and_offset (bfd *abfd, gdb_byte *buf, | |
13236 | const struct comp_unit_head *cu_header, | |
13237 | unsigned int *bytes_read, | |
13238 | unsigned int *offset_size) | |
13239 | { | |
13240 | LONGEST length = read_initial_length (abfd, buf, bytes_read); | |
13241 | ||
13242 | gdb_assert (cu_header->initial_length_size == 4 | |
13243 | || cu_header->initial_length_size == 8 | |
13244 | || cu_header->initial_length_size == 12); | |
13245 | ||
13246 | if (cu_header->initial_length_size != *bytes_read) | |
13247 | complaint (&symfile_complaints, | |
13248 | _("intermixed 32-bit and 64-bit DWARF sections")); | |
dd373385 | 13249 | |
c764a876 | 13250 | *offset_size = (*bytes_read == 4) ? 4 : 8; |
dd373385 | 13251 | return length; |
613e1657 KB |
13252 | } |
13253 | ||
13254 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 13255 | given by cu_header->offset_size. */ |
613e1657 KB |
13256 | |
13257 | static LONGEST | |
fe1b8b76 | 13258 | read_offset (bfd *abfd, gdb_byte *buf, const struct comp_unit_head *cu_header, |
891d2f0b | 13259 | unsigned int *bytes_read) |
c764a876 DE |
13260 | { |
13261 | LONGEST offset = read_offset_1 (abfd, buf, cu_header->offset_size); | |
9a619af0 | 13262 | |
c764a876 DE |
13263 | *bytes_read = cu_header->offset_size; |
13264 | return offset; | |
13265 | } | |
13266 | ||
13267 | /* Read an offset from the data stream. */ | |
13268 | ||
13269 | static LONGEST | |
13270 | read_offset_1 (bfd *abfd, gdb_byte *buf, unsigned int offset_size) | |
613e1657 KB |
13271 | { |
13272 | LONGEST retval = 0; | |
13273 | ||
c764a876 | 13274 | switch (offset_size) |
613e1657 KB |
13275 | { |
13276 | case 4: | |
fe1b8b76 | 13277 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
13278 | break; |
13279 | case 8: | |
fe1b8b76 | 13280 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
13281 | break; |
13282 | default: | |
8e65ff28 | 13283 | internal_error (__FILE__, __LINE__, |
c764a876 | 13284 | _("read_offset_1: bad switch [in module %s]"), |
659b0389 | 13285 | bfd_get_filename (abfd)); |
613e1657 KB |
13286 | } |
13287 | ||
917c78fc | 13288 | return retval; |
613e1657 KB |
13289 | } |
13290 | ||
fe1b8b76 JB |
13291 | static gdb_byte * |
13292 | read_n_bytes (bfd *abfd, gdb_byte *buf, unsigned int size) | |
c906108c SS |
13293 | { |
13294 | /* If the size of a host char is 8 bits, we can return a pointer | |
13295 | to the buffer, otherwise we have to copy the data to a buffer | |
13296 | allocated on the temporary obstack. */ | |
4bdf3d34 | 13297 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 13298 | return buf; |
c906108c SS |
13299 | } |
13300 | ||
13301 | static char * | |
9b1c24c8 | 13302 | read_direct_string (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c SS |
13303 | { |
13304 | /* If the size of a host char is 8 bits, we can return a pointer | |
13305 | to the string, otherwise we have to copy the string to a buffer | |
13306 | allocated on the temporary obstack. */ | |
4bdf3d34 | 13307 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
13308 | if (*buf == '\0') |
13309 | { | |
13310 | *bytes_read_ptr = 1; | |
13311 | return NULL; | |
13312 | } | |
fe1b8b76 JB |
13313 | *bytes_read_ptr = strlen ((char *) buf) + 1; |
13314 | return (char *) buf; | |
4bdf3d34 JJ |
13315 | } |
13316 | ||
13317 | static char * | |
cf2c3c16 | 13318 | read_indirect_string_at_offset (bfd *abfd, LONGEST str_offset) |
4bdf3d34 | 13319 | { |
be391dca | 13320 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwarf2_per_objfile->str); |
dce234bc | 13321 | if (dwarf2_per_objfile->str.buffer == NULL) |
cf2c3c16 TT |
13322 | error (_("DW_FORM_strp used without .debug_str section [in module %s]"), |
13323 | bfd_get_filename (abfd)); | |
dce234bc | 13324 | if (str_offset >= dwarf2_per_objfile->str.size) |
cf2c3c16 TT |
13325 | error (_("DW_FORM_strp pointing outside of " |
13326 | ".debug_str section [in module %s]"), | |
13327 | bfd_get_filename (abfd)); | |
4bdf3d34 | 13328 | gdb_assert (HOST_CHAR_BIT == 8); |
dce234bc | 13329 | if (dwarf2_per_objfile->str.buffer[str_offset] == '\0') |
4bdf3d34 | 13330 | return NULL; |
dce234bc | 13331 | return (char *) (dwarf2_per_objfile->str.buffer + str_offset); |
c906108c SS |
13332 | } |
13333 | ||
cf2c3c16 TT |
13334 | static char * |
13335 | read_indirect_string (bfd *abfd, gdb_byte *buf, | |
13336 | const struct comp_unit_head *cu_header, | |
13337 | unsigned int *bytes_read_ptr) | |
13338 | { | |
13339 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
13340 | ||
13341 | return read_indirect_string_at_offset (abfd, str_offset); | |
13342 | } | |
13343 | ||
12df843f | 13344 | static ULONGEST |
fe1b8b76 | 13345 | read_unsigned_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 13346 | { |
12df843f | 13347 | ULONGEST result; |
ce5d95e1 | 13348 | unsigned int num_read; |
c906108c SS |
13349 | int i, shift; |
13350 | unsigned char byte; | |
13351 | ||
13352 | result = 0; | |
13353 | shift = 0; | |
13354 | num_read = 0; | |
13355 | i = 0; | |
13356 | while (1) | |
13357 | { | |
fe1b8b76 | 13358 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
13359 | buf++; |
13360 | num_read++; | |
12df843f | 13361 | result |= ((ULONGEST) (byte & 127) << shift); |
c906108c SS |
13362 | if ((byte & 128) == 0) |
13363 | { | |
13364 | break; | |
13365 | } | |
13366 | shift += 7; | |
13367 | } | |
13368 | *bytes_read_ptr = num_read; | |
13369 | return result; | |
13370 | } | |
13371 | ||
12df843f | 13372 | static LONGEST |
fe1b8b76 | 13373 | read_signed_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 13374 | { |
12df843f | 13375 | LONGEST result; |
77e0b926 | 13376 | int i, shift, num_read; |
c906108c SS |
13377 | unsigned char byte; |
13378 | ||
13379 | result = 0; | |
13380 | shift = 0; | |
c906108c SS |
13381 | num_read = 0; |
13382 | i = 0; | |
13383 | while (1) | |
13384 | { | |
fe1b8b76 | 13385 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
13386 | buf++; |
13387 | num_read++; | |
12df843f | 13388 | result |= ((LONGEST) (byte & 127) << shift); |
c906108c SS |
13389 | shift += 7; |
13390 | if ((byte & 128) == 0) | |
13391 | { | |
13392 | break; | |
13393 | } | |
13394 | } | |
77e0b926 | 13395 | if ((shift < 8 * sizeof (result)) && (byte & 0x40)) |
12df843f | 13396 | result |= -(((LONGEST) 1) << shift); |
c906108c SS |
13397 | *bytes_read_ptr = num_read; |
13398 | return result; | |
13399 | } | |
13400 | ||
3019eac3 DE |
13401 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
13402 | ADDR_BASE is the DW_AT_GNU_addr_base attribute or zero. | |
13403 | ADDR_SIZE is the size of addresses from the CU header. */ | |
13404 | ||
13405 | static CORE_ADDR | |
13406 | read_addr_index_1 (unsigned int addr_index, ULONGEST addr_base, int addr_size) | |
13407 | { | |
13408 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
13409 | bfd *abfd = objfile->obfd; | |
13410 | const gdb_byte *info_ptr; | |
13411 | ||
13412 | dwarf2_read_section (objfile, &dwarf2_per_objfile->addr); | |
13413 | if (dwarf2_per_objfile->addr.buffer == NULL) | |
13414 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), | |
13415 | objfile->name); | |
13416 | if (addr_base + addr_index * addr_size >= dwarf2_per_objfile->addr.size) | |
13417 | error (_("DW_FORM_addr_index pointing outside of " | |
13418 | ".debug_addr section [in module %s]"), | |
13419 | objfile->name); | |
13420 | info_ptr = (dwarf2_per_objfile->addr.buffer | |
13421 | + addr_base + addr_index * addr_size); | |
13422 | if (addr_size == 4) | |
13423 | return bfd_get_32 (abfd, info_ptr); | |
13424 | else | |
13425 | return bfd_get_64 (abfd, info_ptr); | |
13426 | } | |
13427 | ||
13428 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
13429 | ||
13430 | static CORE_ADDR | |
13431 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
13432 | { | |
13433 | return read_addr_index_1 (addr_index, cu->addr_base, cu->header.addr_size); | |
13434 | } | |
13435 | ||
13436 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
13437 | ||
13438 | static CORE_ADDR | |
13439 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, gdb_byte *info_ptr, | |
13440 | unsigned int *bytes_read) | |
13441 | { | |
13442 | bfd *abfd = cu->objfile->obfd; | |
13443 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
13444 | ||
13445 | return read_addr_index (cu, addr_index); | |
13446 | } | |
13447 | ||
13448 | /* Data structure to pass results from dwarf2_read_addr_index_reader | |
13449 | back to dwarf2_read_addr_index. */ | |
13450 | ||
13451 | struct dwarf2_read_addr_index_data | |
13452 | { | |
13453 | ULONGEST addr_base; | |
13454 | int addr_size; | |
13455 | }; | |
13456 | ||
13457 | /* die_reader_func for dwarf2_read_addr_index. */ | |
13458 | ||
13459 | static void | |
13460 | dwarf2_read_addr_index_reader (const struct die_reader_specs *reader, | |
13461 | gdb_byte *info_ptr, | |
13462 | struct die_info *comp_unit_die, | |
13463 | int has_children, | |
13464 | void *data) | |
13465 | { | |
13466 | struct dwarf2_cu *cu = reader->cu; | |
13467 | struct dwarf2_read_addr_index_data *aidata = | |
13468 | (struct dwarf2_read_addr_index_data *) data; | |
13469 | ||
13470 | aidata->addr_base = cu->addr_base; | |
13471 | aidata->addr_size = cu->header.addr_size; | |
13472 | } | |
13473 | ||
13474 | /* Given an index in .debug_addr, fetch the value. | |
13475 | NOTE: This can be called during dwarf expression evaluation, | |
13476 | long after the debug information has been read, and thus per_cu->cu | |
13477 | may no longer exist. */ | |
13478 | ||
13479 | CORE_ADDR | |
13480 | dwarf2_read_addr_index (struct dwarf2_per_cu_data *per_cu, | |
13481 | unsigned int addr_index) | |
13482 | { | |
13483 | struct objfile *objfile = per_cu->objfile; | |
13484 | struct dwarf2_cu *cu = per_cu->cu; | |
13485 | ULONGEST addr_base; | |
13486 | int addr_size; | |
13487 | ||
13488 | /* This is intended to be called from outside this file. */ | |
13489 | dw2_setup (objfile); | |
13490 | ||
13491 | /* We need addr_base and addr_size. | |
13492 | If we don't have PER_CU->cu, we have to get it. | |
13493 | Nasty, but the alternative is storing the needed info in PER_CU, | |
13494 | which at this point doesn't seem justified: it's not clear how frequently | |
13495 | it would get used and it would increase the size of every PER_CU. | |
13496 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
13497 | so we're not in uncharted territory here. | |
13498 | Alas we need to be a bit more complicated as addr_base is contained | |
13499 | in the DIE. | |
13500 | ||
13501 | We don't need to read the entire CU(/TU). | |
13502 | We just need the header and top level die. | |
13503 | IWBN to use the aging mechanism to let us lazily later discard the CU. | |
13504 | See however init_cutu_and_read_dies_simple. */ | |
13505 | ||
13506 | if (cu != NULL) | |
13507 | { | |
13508 | addr_base = cu->addr_base; | |
13509 | addr_size = cu->header.addr_size; | |
13510 | } | |
13511 | else | |
13512 | { | |
13513 | struct dwarf2_read_addr_index_data aidata; | |
13514 | ||
13515 | init_cutu_and_read_dies_simple (per_cu, dwarf2_read_addr_index_reader, | |
13516 | &aidata); | |
13517 | addr_base = aidata.addr_base; | |
13518 | addr_size = aidata.addr_size; | |
13519 | } | |
13520 | ||
13521 | return read_addr_index_1 (addr_index, addr_base, addr_size); | |
13522 | } | |
13523 | ||
13524 | /* Given a DW_AT_str_index, fetch the string. */ | |
13525 | ||
13526 | static char * | |
13527 | read_str_index (const struct die_reader_specs *reader, | |
13528 | struct dwarf2_cu *cu, ULONGEST str_index) | |
13529 | { | |
13530 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
13531 | const char *dwo_name = objfile->name; | |
13532 | bfd *abfd = objfile->obfd; | |
13533 | struct dwo_sections *sections = &reader->dwo_file->sections; | |
13534 | gdb_byte *info_ptr; | |
13535 | ULONGEST str_offset; | |
13536 | ||
13537 | dwarf2_read_section (objfile, §ions->str); | |
13538 | dwarf2_read_section (objfile, §ions->str_offsets); | |
13539 | if (sections->str.buffer == NULL) | |
13540 | error (_("DW_FORM_str_index used without .debug_str.dwo section" | |
13541 | " in CU at offset 0x%lx [in module %s]"), | |
13542 | (long) cu->header.offset.sect_off, dwo_name); | |
13543 | if (sections->str_offsets.buffer == NULL) | |
13544 | error (_("DW_FORM_str_index used without .debug_str_offsets.dwo section" | |
13545 | " in CU at offset 0x%lx [in module %s]"), | |
13546 | (long) cu->header.offset.sect_off, dwo_name); | |
13547 | if (str_index * cu->header.offset_size >= sections->str_offsets.size) | |
13548 | error (_("DW_FORM_str_index pointing outside of .debug_str_offsets.dwo" | |
13549 | " section in CU at offset 0x%lx [in module %s]"), | |
13550 | (long) cu->header.offset.sect_off, dwo_name); | |
13551 | info_ptr = (sections->str_offsets.buffer | |
13552 | + str_index * cu->header.offset_size); | |
13553 | if (cu->header.offset_size == 4) | |
13554 | str_offset = bfd_get_32 (abfd, info_ptr); | |
13555 | else | |
13556 | str_offset = bfd_get_64 (abfd, info_ptr); | |
13557 | if (str_offset >= sections->str.size) | |
13558 | error (_("Offset from DW_FORM_str_index pointing outside of" | |
13559 | " .debug_str.dwo section in CU at offset 0x%lx [in module %s]"), | |
13560 | (long) cu->header.offset.sect_off, dwo_name); | |
13561 | return (char *) (sections->str.buffer + str_offset); | |
13562 | } | |
13563 | ||
3019eac3 DE |
13564 | /* Return the length of an LEB128 number in BUF. */ |
13565 | ||
13566 | static int | |
13567 | leb128_size (const gdb_byte *buf) | |
13568 | { | |
13569 | const gdb_byte *begin = buf; | |
13570 | gdb_byte byte; | |
13571 | ||
13572 | while (1) | |
13573 | { | |
13574 | byte = *buf++; | |
13575 | if ((byte & 128) == 0) | |
13576 | return buf - begin; | |
13577 | } | |
13578 | } | |
13579 | ||
c906108c | 13580 | static void |
e142c38c | 13581 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
13582 | { |
13583 | switch (lang) | |
13584 | { | |
13585 | case DW_LANG_C89: | |
76bee0cc | 13586 | case DW_LANG_C99: |
c906108c | 13587 | case DW_LANG_C: |
e142c38c | 13588 | cu->language = language_c; |
c906108c SS |
13589 | break; |
13590 | case DW_LANG_C_plus_plus: | |
e142c38c | 13591 | cu->language = language_cplus; |
c906108c | 13592 | break; |
6aecb9c2 JB |
13593 | case DW_LANG_D: |
13594 | cu->language = language_d; | |
13595 | break; | |
c906108c SS |
13596 | case DW_LANG_Fortran77: |
13597 | case DW_LANG_Fortran90: | |
b21b22e0 | 13598 | case DW_LANG_Fortran95: |
e142c38c | 13599 | cu->language = language_fortran; |
c906108c | 13600 | break; |
a766d390 DE |
13601 | case DW_LANG_Go: |
13602 | cu->language = language_go; | |
13603 | break; | |
c906108c | 13604 | case DW_LANG_Mips_Assembler: |
e142c38c | 13605 | cu->language = language_asm; |
c906108c | 13606 | break; |
bebd888e | 13607 | case DW_LANG_Java: |
e142c38c | 13608 | cu->language = language_java; |
bebd888e | 13609 | break; |
c906108c | 13610 | case DW_LANG_Ada83: |
8aaf0b47 | 13611 | case DW_LANG_Ada95: |
bc5f45f8 JB |
13612 | cu->language = language_ada; |
13613 | break; | |
72019c9c GM |
13614 | case DW_LANG_Modula2: |
13615 | cu->language = language_m2; | |
13616 | break; | |
fe8e67fd PM |
13617 | case DW_LANG_Pascal83: |
13618 | cu->language = language_pascal; | |
13619 | break; | |
22566fbd DJ |
13620 | case DW_LANG_ObjC: |
13621 | cu->language = language_objc; | |
13622 | break; | |
c906108c SS |
13623 | case DW_LANG_Cobol74: |
13624 | case DW_LANG_Cobol85: | |
c906108c | 13625 | default: |
e142c38c | 13626 | cu->language = language_minimal; |
c906108c SS |
13627 | break; |
13628 | } | |
e142c38c | 13629 | cu->language_defn = language_def (cu->language); |
c906108c SS |
13630 | } |
13631 | ||
13632 | /* Return the named attribute or NULL if not there. */ | |
13633 | ||
13634 | static struct attribute * | |
e142c38c | 13635 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 13636 | { |
a48e046c | 13637 | for (;;) |
c906108c | 13638 | { |
a48e046c TT |
13639 | unsigned int i; |
13640 | struct attribute *spec = NULL; | |
13641 | ||
13642 | for (i = 0; i < die->num_attrs; ++i) | |
13643 | { | |
13644 | if (die->attrs[i].name == name) | |
13645 | return &die->attrs[i]; | |
13646 | if (die->attrs[i].name == DW_AT_specification | |
13647 | || die->attrs[i].name == DW_AT_abstract_origin) | |
13648 | spec = &die->attrs[i]; | |
13649 | } | |
13650 | ||
13651 | if (!spec) | |
13652 | break; | |
c906108c | 13653 | |
f2f0e013 | 13654 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 13655 | } |
c5aa993b | 13656 | |
c906108c SS |
13657 | return NULL; |
13658 | } | |
13659 | ||
348e048f DE |
13660 | /* Return the named attribute or NULL if not there, |
13661 | but do not follow DW_AT_specification, etc. | |
13662 | This is for use in contexts where we're reading .debug_types dies. | |
13663 | Following DW_AT_specification, DW_AT_abstract_origin will take us | |
13664 | back up the chain, and we want to go down. */ | |
13665 | ||
13666 | static struct attribute * | |
45e58e77 | 13667 | dwarf2_attr_no_follow (struct die_info *die, unsigned int name) |
348e048f DE |
13668 | { |
13669 | unsigned int i; | |
13670 | ||
13671 | for (i = 0; i < die->num_attrs; ++i) | |
13672 | if (die->attrs[i].name == name) | |
13673 | return &die->attrs[i]; | |
13674 | ||
13675 | return NULL; | |
13676 | } | |
13677 | ||
05cf31d1 JB |
13678 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
13679 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 13680 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
13681 | |
13682 | static int | |
13683 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
13684 | { | |
13685 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
13686 | ||
13687 | return (attr && DW_UNSND (attr)); | |
13688 | } | |
13689 | ||
3ca72b44 | 13690 | static int |
e142c38c | 13691 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 13692 | { |
05cf31d1 JB |
13693 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
13694 | which value is non-zero. However, we have to be careful with | |
13695 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
13696 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
13697 | end up accidently finding a declaration attribute that belongs | |
13698 | to a different DIE referenced by the specification attribute, | |
13699 | even though the given DIE does not have a declaration attribute. */ | |
13700 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
13701 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
13702 | } |
13703 | ||
63d06c5c | 13704 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 13705 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
13706 | containing the return value on output. If there is no |
13707 | specification, but there is an abstract origin, that is | |
13708 | returned. */ | |
63d06c5c DC |
13709 | |
13710 | static struct die_info * | |
f2f0e013 | 13711 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 13712 | { |
f2f0e013 DJ |
13713 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
13714 | *spec_cu); | |
63d06c5c | 13715 | |
edb3359d DJ |
13716 | if (spec_attr == NULL) |
13717 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
13718 | ||
63d06c5c DC |
13719 | if (spec_attr == NULL) |
13720 | return NULL; | |
13721 | else | |
f2f0e013 | 13722 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 13723 | } |
c906108c | 13724 | |
debd256d | 13725 | /* Free the line_header structure *LH, and any arrays and strings it |
ae2de4f8 DE |
13726 | refers to. |
13727 | NOTE: This is also used as a "cleanup" function. */ | |
13728 | ||
debd256d JB |
13729 | static void |
13730 | free_line_header (struct line_header *lh) | |
13731 | { | |
13732 | if (lh->standard_opcode_lengths) | |
a8bc7b56 | 13733 | xfree (lh->standard_opcode_lengths); |
debd256d JB |
13734 | |
13735 | /* Remember that all the lh->file_names[i].name pointers are | |
13736 | pointers into debug_line_buffer, and don't need to be freed. */ | |
13737 | if (lh->file_names) | |
a8bc7b56 | 13738 | xfree (lh->file_names); |
debd256d JB |
13739 | |
13740 | /* Similarly for the include directory names. */ | |
13741 | if (lh->include_dirs) | |
a8bc7b56 | 13742 | xfree (lh->include_dirs); |
debd256d | 13743 | |
a8bc7b56 | 13744 | xfree (lh); |
debd256d JB |
13745 | } |
13746 | ||
debd256d | 13747 | /* Add an entry to LH's include directory table. */ |
ae2de4f8 | 13748 | |
debd256d JB |
13749 | static void |
13750 | add_include_dir (struct line_header *lh, char *include_dir) | |
c906108c | 13751 | { |
debd256d JB |
13752 | /* Grow the array if necessary. */ |
13753 | if (lh->include_dirs_size == 0) | |
c5aa993b | 13754 | { |
debd256d JB |
13755 | lh->include_dirs_size = 1; /* for testing */ |
13756 | lh->include_dirs = xmalloc (lh->include_dirs_size | |
13757 | * sizeof (*lh->include_dirs)); | |
13758 | } | |
13759 | else if (lh->num_include_dirs >= lh->include_dirs_size) | |
13760 | { | |
13761 | lh->include_dirs_size *= 2; | |
13762 | lh->include_dirs = xrealloc (lh->include_dirs, | |
13763 | (lh->include_dirs_size | |
13764 | * sizeof (*lh->include_dirs))); | |
c5aa993b | 13765 | } |
c906108c | 13766 | |
debd256d JB |
13767 | lh->include_dirs[lh->num_include_dirs++] = include_dir; |
13768 | } | |
6e70227d | 13769 | |
debd256d | 13770 | /* Add an entry to LH's file name table. */ |
ae2de4f8 | 13771 | |
debd256d JB |
13772 | static void |
13773 | add_file_name (struct line_header *lh, | |
13774 | char *name, | |
13775 | unsigned int dir_index, | |
13776 | unsigned int mod_time, | |
13777 | unsigned int length) | |
13778 | { | |
13779 | struct file_entry *fe; | |
13780 | ||
13781 | /* Grow the array if necessary. */ | |
13782 | if (lh->file_names_size == 0) | |
13783 | { | |
13784 | lh->file_names_size = 1; /* for testing */ | |
13785 | lh->file_names = xmalloc (lh->file_names_size | |
13786 | * sizeof (*lh->file_names)); | |
13787 | } | |
13788 | else if (lh->num_file_names >= lh->file_names_size) | |
13789 | { | |
13790 | lh->file_names_size *= 2; | |
13791 | lh->file_names = xrealloc (lh->file_names, | |
13792 | (lh->file_names_size | |
13793 | * sizeof (*lh->file_names))); | |
13794 | } | |
13795 | ||
13796 | fe = &lh->file_names[lh->num_file_names++]; | |
13797 | fe->name = name; | |
13798 | fe->dir_index = dir_index; | |
13799 | fe->mod_time = mod_time; | |
13800 | fe->length = length; | |
aaa75496 | 13801 | fe->included_p = 0; |
cb1df416 | 13802 | fe->symtab = NULL; |
debd256d | 13803 | } |
6e70227d | 13804 | |
debd256d | 13805 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 13806 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 13807 | to a struct line_header, allocated using xmalloc. |
debd256d JB |
13808 | |
13809 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
13810 | the returned object point into the dwarf line section buffer, |
13811 | and must not be freed. */ | |
ae2de4f8 | 13812 | |
debd256d | 13813 | static struct line_header * |
3019eac3 | 13814 | dwarf_decode_line_header (unsigned int offset, struct dwarf2_cu *cu) |
debd256d JB |
13815 | { |
13816 | struct cleanup *back_to; | |
13817 | struct line_header *lh; | |
fe1b8b76 | 13818 | gdb_byte *line_ptr; |
c764a876 | 13819 | unsigned int bytes_read, offset_size; |
debd256d JB |
13820 | int i; |
13821 | char *cur_dir, *cur_file; | |
3019eac3 DE |
13822 | struct dwarf2_section_info *section; |
13823 | bfd *abfd; | |
13824 | ||
13825 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
13826 | DWO file. */ | |
13827 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
13828 | section = &cu->dwo_unit->dwo_file->sections.line; | |
13829 | else | |
13830 | section = &dwarf2_per_objfile->line; | |
debd256d | 13831 | |
3019eac3 DE |
13832 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); |
13833 | if (section->buffer == NULL) | |
debd256d | 13834 | { |
3019eac3 DE |
13835 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
13836 | complaint (&symfile_complaints, _("missing .debug_line.dwo section")); | |
13837 | else | |
13838 | complaint (&symfile_complaints, _("missing .debug_line section")); | |
debd256d JB |
13839 | return 0; |
13840 | } | |
13841 | ||
fceca515 DE |
13842 | /* We can't do this until we know the section is non-empty. |
13843 | Only then do we know we have such a section. */ | |
13844 | abfd = section->asection->owner; | |
13845 | ||
a738430d MK |
13846 | /* Make sure that at least there's room for the total_length field. |
13847 | That could be 12 bytes long, but we're just going to fudge that. */ | |
3019eac3 | 13848 | if (offset + 4 >= section->size) |
debd256d | 13849 | { |
4d3c2250 | 13850 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
13851 | return 0; |
13852 | } | |
13853 | ||
13854 | lh = xmalloc (sizeof (*lh)); | |
13855 | memset (lh, 0, sizeof (*lh)); | |
13856 | back_to = make_cleanup ((make_cleanup_ftype *) free_line_header, | |
13857 | (void *) lh); | |
13858 | ||
3019eac3 | 13859 | line_ptr = section->buffer + offset; |
debd256d | 13860 | |
a738430d | 13861 | /* Read in the header. */ |
6e70227d | 13862 | lh->total_length = |
c764a876 DE |
13863 | read_checked_initial_length_and_offset (abfd, line_ptr, &cu->header, |
13864 | &bytes_read, &offset_size); | |
debd256d | 13865 | line_ptr += bytes_read; |
3019eac3 | 13866 | if (line_ptr + lh->total_length > (section->buffer + section->size)) |
debd256d | 13867 | { |
4d3c2250 | 13868 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
13869 | return 0; |
13870 | } | |
13871 | lh->statement_program_end = line_ptr + lh->total_length; | |
13872 | lh->version = read_2_bytes (abfd, line_ptr); | |
13873 | line_ptr += 2; | |
c764a876 DE |
13874 | lh->header_length = read_offset_1 (abfd, line_ptr, offset_size); |
13875 | line_ptr += offset_size; | |
debd256d JB |
13876 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); |
13877 | line_ptr += 1; | |
2dc7f7b3 TT |
13878 | if (lh->version >= 4) |
13879 | { | |
13880 | lh->maximum_ops_per_instruction = read_1_byte (abfd, line_ptr); | |
13881 | line_ptr += 1; | |
13882 | } | |
13883 | else | |
13884 | lh->maximum_ops_per_instruction = 1; | |
13885 | ||
13886 | if (lh->maximum_ops_per_instruction == 0) | |
13887 | { | |
13888 | lh->maximum_ops_per_instruction = 1; | |
13889 | complaint (&symfile_complaints, | |
3e43a32a MS |
13890 | _("invalid maximum_ops_per_instruction " |
13891 | "in `.debug_line' section")); | |
2dc7f7b3 TT |
13892 | } |
13893 | ||
debd256d JB |
13894 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); |
13895 | line_ptr += 1; | |
13896 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
13897 | line_ptr += 1; | |
13898 | lh->line_range = read_1_byte (abfd, line_ptr); | |
13899 | line_ptr += 1; | |
13900 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
13901 | line_ptr += 1; | |
13902 | lh->standard_opcode_lengths | |
fe1b8b76 | 13903 | = xmalloc (lh->opcode_base * sizeof (lh->standard_opcode_lengths[0])); |
debd256d JB |
13904 | |
13905 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
13906 | for (i = 1; i < lh->opcode_base; ++i) | |
13907 | { | |
13908 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
13909 | line_ptr += 1; | |
13910 | } | |
13911 | ||
a738430d | 13912 | /* Read directory table. */ |
9b1c24c8 | 13913 | while ((cur_dir = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) |
debd256d JB |
13914 | { |
13915 | line_ptr += bytes_read; | |
13916 | add_include_dir (lh, cur_dir); | |
13917 | } | |
13918 | line_ptr += bytes_read; | |
13919 | ||
a738430d | 13920 | /* Read file name table. */ |
9b1c24c8 | 13921 | while ((cur_file = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) |
debd256d JB |
13922 | { |
13923 | unsigned int dir_index, mod_time, length; | |
13924 | ||
13925 | line_ptr += bytes_read; | |
13926 | dir_index = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
13927 | line_ptr += bytes_read; | |
13928 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
13929 | line_ptr += bytes_read; | |
13930 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
13931 | line_ptr += bytes_read; | |
13932 | ||
13933 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
13934 | } | |
13935 | line_ptr += bytes_read; | |
6e70227d | 13936 | lh->statement_program_start = line_ptr; |
debd256d | 13937 | |
3019eac3 | 13938 | if (line_ptr > (section->buffer + section->size)) |
4d3c2250 | 13939 | complaint (&symfile_complaints, |
3e43a32a MS |
13940 | _("line number info header doesn't " |
13941 | "fit in `.debug_line' section")); | |
debd256d JB |
13942 | |
13943 | discard_cleanups (back_to); | |
13944 | return lh; | |
13945 | } | |
c906108c | 13946 | |
c6da4cef DE |
13947 | /* Subroutine of dwarf_decode_lines to simplify it. |
13948 | Return the file name of the psymtab for included file FILE_INDEX | |
13949 | in line header LH of PST. | |
13950 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
13951 | If space for the result is malloc'd, it will be freed by a cleanup. | |
13952 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. */ | |
13953 | ||
13954 | static char * | |
13955 | psymtab_include_file_name (const struct line_header *lh, int file_index, | |
13956 | const struct partial_symtab *pst, | |
13957 | const char *comp_dir) | |
13958 | { | |
13959 | const struct file_entry fe = lh->file_names [file_index]; | |
13960 | char *include_name = fe.name; | |
13961 | char *include_name_to_compare = include_name; | |
13962 | char *dir_name = NULL; | |
72b9f47f TT |
13963 | const char *pst_filename; |
13964 | char *copied_name = NULL; | |
c6da4cef DE |
13965 | int file_is_pst; |
13966 | ||
13967 | if (fe.dir_index) | |
13968 | dir_name = lh->include_dirs[fe.dir_index - 1]; | |
13969 | ||
13970 | if (!IS_ABSOLUTE_PATH (include_name) | |
13971 | && (dir_name != NULL || comp_dir != NULL)) | |
13972 | { | |
13973 | /* Avoid creating a duplicate psymtab for PST. | |
13974 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
13975 | Before we do the comparison, however, we need to account | |
13976 | for DIR_NAME and COMP_DIR. | |
13977 | First prepend dir_name (if non-NULL). If we still don't | |
13978 | have an absolute path prepend comp_dir (if non-NULL). | |
13979 | However, the directory we record in the include-file's | |
13980 | psymtab does not contain COMP_DIR (to match the | |
13981 | corresponding symtab(s)). | |
13982 | ||
13983 | Example: | |
13984 | ||
13985 | bash$ cd /tmp | |
13986 | bash$ gcc -g ./hello.c | |
13987 | include_name = "hello.c" | |
13988 | dir_name = "." | |
13989 | DW_AT_comp_dir = comp_dir = "/tmp" | |
13990 | DW_AT_name = "./hello.c" */ | |
13991 | ||
13992 | if (dir_name != NULL) | |
13993 | { | |
13994 | include_name = concat (dir_name, SLASH_STRING, | |
13995 | include_name, (char *)NULL); | |
13996 | include_name_to_compare = include_name; | |
13997 | make_cleanup (xfree, include_name); | |
13998 | } | |
13999 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
14000 | { | |
14001 | include_name_to_compare = concat (comp_dir, SLASH_STRING, | |
14002 | include_name, (char *)NULL); | |
14003 | } | |
14004 | } | |
14005 | ||
14006 | pst_filename = pst->filename; | |
14007 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) | |
14008 | { | |
72b9f47f TT |
14009 | copied_name = concat (pst->dirname, SLASH_STRING, |
14010 | pst_filename, (char *)NULL); | |
14011 | pst_filename = copied_name; | |
c6da4cef DE |
14012 | } |
14013 | ||
1e3fad37 | 14014 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef DE |
14015 | |
14016 | if (include_name_to_compare != include_name) | |
14017 | xfree (include_name_to_compare); | |
72b9f47f TT |
14018 | if (copied_name != NULL) |
14019 | xfree (copied_name); | |
c6da4cef DE |
14020 | |
14021 | if (file_is_pst) | |
14022 | return NULL; | |
14023 | return include_name; | |
14024 | } | |
14025 | ||
c91513d8 PP |
14026 | /* Ignore this record_line request. */ |
14027 | ||
14028 | static void | |
14029 | noop_record_line (struct subfile *subfile, int line, CORE_ADDR pc) | |
14030 | { | |
14031 | return; | |
14032 | } | |
14033 | ||
f3f5162e DE |
14034 | /* Subroutine of dwarf_decode_lines to simplify it. |
14035 | Process the line number information in LH. */ | |
debd256d | 14036 | |
c906108c | 14037 | static void |
f3f5162e DE |
14038 | dwarf_decode_lines_1 (struct line_header *lh, const char *comp_dir, |
14039 | struct dwarf2_cu *cu, struct partial_symtab *pst) | |
c906108c | 14040 | { |
a8c50c1f | 14041 | gdb_byte *line_ptr, *extended_end; |
fe1b8b76 | 14042 | gdb_byte *line_end; |
a8c50c1f | 14043 | unsigned int bytes_read, extended_len; |
c906108c | 14044 | unsigned char op_code, extended_op, adj_opcode; |
e142c38c DJ |
14045 | CORE_ADDR baseaddr; |
14046 | struct objfile *objfile = cu->objfile; | |
f3f5162e | 14047 | bfd *abfd = objfile->obfd; |
fbf65064 | 14048 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
aaa75496 | 14049 | const int decode_for_pst_p = (pst != NULL); |
f3f5162e | 14050 | struct subfile *last_subfile = NULL; |
c91513d8 PP |
14051 | void (*p_record_line) (struct subfile *subfile, int line, CORE_ADDR pc) |
14052 | = record_line; | |
e142c38c DJ |
14053 | |
14054 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 14055 | |
debd256d JB |
14056 | line_ptr = lh->statement_program_start; |
14057 | line_end = lh->statement_program_end; | |
c906108c SS |
14058 | |
14059 | /* Read the statement sequences until there's nothing left. */ | |
14060 | while (line_ptr < line_end) | |
14061 | { | |
14062 | /* state machine registers */ | |
14063 | CORE_ADDR address = 0; | |
14064 | unsigned int file = 1; | |
14065 | unsigned int line = 1; | |
14066 | unsigned int column = 0; | |
debd256d | 14067 | int is_stmt = lh->default_is_stmt; |
c906108c SS |
14068 | int basic_block = 0; |
14069 | int end_sequence = 0; | |
fbf65064 | 14070 | CORE_ADDR addr; |
2dc7f7b3 | 14071 | unsigned char op_index = 0; |
c906108c | 14072 | |
aaa75496 | 14073 | if (!decode_for_pst_p && lh->num_file_names >= file) |
c906108c | 14074 | { |
aaa75496 | 14075 | /* Start a subfile for the current file of the state machine. */ |
debd256d JB |
14076 | /* lh->include_dirs and lh->file_names are 0-based, but the |
14077 | directory and file name numbers in the statement program | |
14078 | are 1-based. */ | |
14079 | struct file_entry *fe = &lh->file_names[file - 1]; | |
4f1520fb | 14080 | char *dir = NULL; |
a738430d | 14081 | |
debd256d JB |
14082 | if (fe->dir_index) |
14083 | dir = lh->include_dirs[fe->dir_index - 1]; | |
4f1520fb FR |
14084 | |
14085 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
c906108c SS |
14086 | } |
14087 | ||
a738430d | 14088 | /* Decode the table. */ |
c5aa993b | 14089 | while (!end_sequence) |
c906108c SS |
14090 | { |
14091 | op_code = read_1_byte (abfd, line_ptr); | |
14092 | line_ptr += 1; | |
59205f5a JB |
14093 | if (line_ptr > line_end) |
14094 | { | |
14095 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
14096 | break; | |
14097 | } | |
9aa1fe7e | 14098 | |
debd256d | 14099 | if (op_code >= lh->opcode_base) |
6e70227d | 14100 | { |
a738430d | 14101 | /* Special operand. */ |
debd256d | 14102 | adj_opcode = op_code - lh->opcode_base; |
2dc7f7b3 TT |
14103 | address += (((op_index + (adj_opcode / lh->line_range)) |
14104 | / lh->maximum_ops_per_instruction) | |
14105 | * lh->minimum_instruction_length); | |
14106 | op_index = ((op_index + (adj_opcode / lh->line_range)) | |
14107 | % lh->maximum_ops_per_instruction); | |
debd256d | 14108 | line += lh->line_base + (adj_opcode % lh->line_range); |
59205f5a | 14109 | if (lh->num_file_names < file || file == 0) |
25e43795 | 14110 | dwarf2_debug_line_missing_file_complaint (); |
2dc7f7b3 TT |
14111 | /* For now we ignore lines not starting on an |
14112 | instruction boundary. */ | |
14113 | else if (op_index == 0) | |
25e43795 DJ |
14114 | { |
14115 | lh->file_names[file - 1].included_p = 1; | |
ca5f395d | 14116 | if (!decode_for_pst_p && is_stmt) |
fbf65064 UW |
14117 | { |
14118 | if (last_subfile != current_subfile) | |
14119 | { | |
14120 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
14121 | if (last_subfile) | |
c91513d8 | 14122 | (*p_record_line) (last_subfile, 0, addr); |
fbf65064 UW |
14123 | last_subfile = current_subfile; |
14124 | } | |
25e43795 | 14125 | /* Append row to matrix using current values. */ |
7019d805 | 14126 | addr = gdbarch_addr_bits_remove (gdbarch, address); |
c91513d8 | 14127 | (*p_record_line) (current_subfile, line, addr); |
366da635 | 14128 | } |
25e43795 | 14129 | } |
ca5f395d | 14130 | basic_block = 0; |
9aa1fe7e GK |
14131 | } |
14132 | else switch (op_code) | |
c906108c SS |
14133 | { |
14134 | case DW_LNS_extended_op: | |
3e43a32a MS |
14135 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
14136 | &bytes_read); | |
473b7be6 | 14137 | line_ptr += bytes_read; |
a8c50c1f | 14138 | extended_end = line_ptr + extended_len; |
c906108c SS |
14139 | extended_op = read_1_byte (abfd, line_ptr); |
14140 | line_ptr += 1; | |
14141 | switch (extended_op) | |
14142 | { | |
14143 | case DW_LNE_end_sequence: | |
c91513d8 | 14144 | p_record_line = record_line; |
c906108c | 14145 | end_sequence = 1; |
c906108c SS |
14146 | break; |
14147 | case DW_LNE_set_address: | |
e7c27a73 | 14148 | address = read_address (abfd, line_ptr, cu, &bytes_read); |
c91513d8 PP |
14149 | |
14150 | if (address == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
14151 | { | |
14152 | /* This line table is for a function which has been | |
14153 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
14154 | ||
14155 | long line_offset | |
14156 | = line_ptr - dwarf2_per_objfile->line.buffer; | |
14157 | ||
14158 | complaint (&symfile_complaints, | |
14159 | _(".debug_line address at offset 0x%lx is 0 " | |
14160 | "[in module %s]"), | |
bb5ed363 | 14161 | line_offset, objfile->name); |
c91513d8 PP |
14162 | p_record_line = noop_record_line; |
14163 | } | |
14164 | ||
2dc7f7b3 | 14165 | op_index = 0; |
107d2387 AC |
14166 | line_ptr += bytes_read; |
14167 | address += baseaddr; | |
c906108c SS |
14168 | break; |
14169 | case DW_LNE_define_file: | |
debd256d JB |
14170 | { |
14171 | char *cur_file; | |
14172 | unsigned int dir_index, mod_time, length; | |
6e70227d | 14173 | |
3e43a32a MS |
14174 | cur_file = read_direct_string (abfd, line_ptr, |
14175 | &bytes_read); | |
debd256d JB |
14176 | line_ptr += bytes_read; |
14177 | dir_index = | |
14178 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
14179 | line_ptr += bytes_read; | |
14180 | mod_time = | |
14181 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
14182 | line_ptr += bytes_read; | |
14183 | length = | |
14184 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
14185 | line_ptr += bytes_read; | |
14186 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
14187 | } | |
c906108c | 14188 | break; |
d0c6ba3d CC |
14189 | case DW_LNE_set_discriminator: |
14190 | /* The discriminator is not interesting to the debugger; | |
14191 | just ignore it. */ | |
14192 | line_ptr = extended_end; | |
14193 | break; | |
c906108c | 14194 | default: |
4d3c2250 | 14195 | complaint (&symfile_complaints, |
e2e0b3e5 | 14196 | _("mangled .debug_line section")); |
debd256d | 14197 | return; |
c906108c | 14198 | } |
a8c50c1f DJ |
14199 | /* Make sure that we parsed the extended op correctly. If e.g. |
14200 | we expected a different address size than the producer used, | |
14201 | we may have read the wrong number of bytes. */ | |
14202 | if (line_ptr != extended_end) | |
14203 | { | |
14204 | complaint (&symfile_complaints, | |
14205 | _("mangled .debug_line section")); | |
14206 | return; | |
14207 | } | |
c906108c SS |
14208 | break; |
14209 | case DW_LNS_copy: | |
59205f5a | 14210 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
14211 | dwarf2_debug_line_missing_file_complaint (); |
14212 | else | |
366da635 | 14213 | { |
25e43795 | 14214 | lh->file_names[file - 1].included_p = 1; |
ca5f395d | 14215 | if (!decode_for_pst_p && is_stmt) |
fbf65064 UW |
14216 | { |
14217 | if (last_subfile != current_subfile) | |
14218 | { | |
14219 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
14220 | if (last_subfile) | |
c91513d8 | 14221 | (*p_record_line) (last_subfile, 0, addr); |
fbf65064 UW |
14222 | last_subfile = current_subfile; |
14223 | } | |
7019d805 | 14224 | addr = gdbarch_addr_bits_remove (gdbarch, address); |
c91513d8 | 14225 | (*p_record_line) (current_subfile, line, addr); |
fbf65064 | 14226 | } |
366da635 | 14227 | } |
c906108c SS |
14228 | basic_block = 0; |
14229 | break; | |
14230 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
14231 | { |
14232 | CORE_ADDR adjust | |
14233 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
14234 | ||
14235 | address += (((op_index + adjust) | |
14236 | / lh->maximum_ops_per_instruction) | |
14237 | * lh->minimum_instruction_length); | |
14238 | op_index = ((op_index + adjust) | |
14239 | % lh->maximum_ops_per_instruction); | |
14240 | line_ptr += bytes_read; | |
14241 | } | |
c906108c SS |
14242 | break; |
14243 | case DW_LNS_advance_line: | |
14244 | line += read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
14245 | line_ptr += bytes_read; | |
14246 | break; | |
14247 | case DW_LNS_set_file: | |
debd256d | 14248 | { |
a738430d MK |
14249 | /* The arrays lh->include_dirs and lh->file_names are |
14250 | 0-based, but the directory and file name numbers in | |
14251 | the statement program are 1-based. */ | |
debd256d | 14252 | struct file_entry *fe; |
4f1520fb | 14253 | char *dir = NULL; |
a738430d | 14254 | |
debd256d JB |
14255 | file = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
14256 | line_ptr += bytes_read; | |
59205f5a | 14257 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
14258 | dwarf2_debug_line_missing_file_complaint (); |
14259 | else | |
14260 | { | |
14261 | fe = &lh->file_names[file - 1]; | |
14262 | if (fe->dir_index) | |
14263 | dir = lh->include_dirs[fe->dir_index - 1]; | |
14264 | if (!decode_for_pst_p) | |
14265 | { | |
14266 | last_subfile = current_subfile; | |
14267 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
14268 | } | |
14269 | } | |
debd256d | 14270 | } |
c906108c SS |
14271 | break; |
14272 | case DW_LNS_set_column: | |
14273 | column = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
14274 | line_ptr += bytes_read; | |
14275 | break; | |
14276 | case DW_LNS_negate_stmt: | |
14277 | is_stmt = (!is_stmt); | |
14278 | break; | |
14279 | case DW_LNS_set_basic_block: | |
14280 | basic_block = 1; | |
14281 | break; | |
c2c6d25f JM |
14282 | /* Add to the address register of the state machine the |
14283 | address increment value corresponding to special opcode | |
a738430d MK |
14284 | 255. I.e., this value is scaled by the minimum |
14285 | instruction length since special opcode 255 would have | |
b021a221 | 14286 | scaled the increment. */ |
c906108c | 14287 | case DW_LNS_const_add_pc: |
2dc7f7b3 TT |
14288 | { |
14289 | CORE_ADDR adjust = (255 - lh->opcode_base) / lh->line_range; | |
14290 | ||
14291 | address += (((op_index + adjust) | |
14292 | / lh->maximum_ops_per_instruction) | |
14293 | * lh->minimum_instruction_length); | |
14294 | op_index = ((op_index + adjust) | |
14295 | % lh->maximum_ops_per_instruction); | |
14296 | } | |
c906108c SS |
14297 | break; |
14298 | case DW_LNS_fixed_advance_pc: | |
14299 | address += read_2_bytes (abfd, line_ptr); | |
2dc7f7b3 | 14300 | op_index = 0; |
c906108c SS |
14301 | line_ptr += 2; |
14302 | break; | |
9aa1fe7e | 14303 | default: |
a738430d MK |
14304 | { |
14305 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 14306 | int i; |
a738430d | 14307 | |
debd256d | 14308 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
14309 | { |
14310 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
14311 | line_ptr += bytes_read; | |
14312 | } | |
14313 | } | |
c906108c SS |
14314 | } |
14315 | } | |
59205f5a JB |
14316 | if (lh->num_file_names < file || file == 0) |
14317 | dwarf2_debug_line_missing_file_complaint (); | |
14318 | else | |
14319 | { | |
14320 | lh->file_names[file - 1].included_p = 1; | |
14321 | if (!decode_for_pst_p) | |
fbf65064 UW |
14322 | { |
14323 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
c91513d8 | 14324 | (*p_record_line) (current_subfile, 0, addr); |
fbf65064 | 14325 | } |
59205f5a | 14326 | } |
c906108c | 14327 | } |
f3f5162e DE |
14328 | } |
14329 | ||
14330 | /* Decode the Line Number Program (LNP) for the given line_header | |
14331 | structure and CU. The actual information extracted and the type | |
14332 | of structures created from the LNP depends on the value of PST. | |
14333 | ||
14334 | 1. If PST is NULL, then this procedure uses the data from the program | |
14335 | to create all necessary symbol tables, and their linetables. | |
14336 | ||
14337 | 2. If PST is not NULL, this procedure reads the program to determine | |
14338 | the list of files included by the unit represented by PST, and | |
14339 | builds all the associated partial symbol tables. | |
14340 | ||
14341 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
14342 | It is used for relative paths in the line table. | |
14343 | NOTE: When processing partial symtabs (pst != NULL), | |
14344 | comp_dir == pst->dirname. | |
14345 | ||
14346 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
14347 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
14348 | symtab we don't use it in the name of the psymtabs we create. | |
14349 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
14350 | A good testcase for this is mb-inline.exp. */ | |
14351 | ||
14352 | static void | |
14353 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
14354 | struct dwarf2_cu *cu, struct partial_symtab *pst, | |
14355 | int want_line_info) | |
14356 | { | |
14357 | struct objfile *objfile = cu->objfile; | |
14358 | const int decode_for_pst_p = (pst != NULL); | |
14359 | struct subfile *first_subfile = current_subfile; | |
14360 | ||
14361 | if (want_line_info) | |
14362 | dwarf_decode_lines_1 (lh, comp_dir, cu, pst); | |
aaa75496 JB |
14363 | |
14364 | if (decode_for_pst_p) | |
14365 | { | |
14366 | int file_index; | |
14367 | ||
14368 | /* Now that we're done scanning the Line Header Program, we can | |
14369 | create the psymtab of each included file. */ | |
14370 | for (file_index = 0; file_index < lh->num_file_names; file_index++) | |
14371 | if (lh->file_names[file_index].included_p == 1) | |
14372 | { | |
c6da4cef DE |
14373 | char *include_name = |
14374 | psymtab_include_file_name (lh, file_index, pst, comp_dir); | |
14375 | if (include_name != NULL) | |
aaa75496 JB |
14376 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
14377 | } | |
14378 | } | |
cb1df416 DJ |
14379 | else |
14380 | { | |
14381 | /* Make sure a symtab is created for every file, even files | |
14382 | which contain only variables (i.e. no code with associated | |
14383 | line numbers). */ | |
cb1df416 | 14384 | int i; |
cb1df416 DJ |
14385 | |
14386 | for (i = 0; i < lh->num_file_names; i++) | |
14387 | { | |
14388 | char *dir = NULL; | |
f3f5162e | 14389 | struct file_entry *fe; |
9a619af0 | 14390 | |
cb1df416 DJ |
14391 | fe = &lh->file_names[i]; |
14392 | if (fe->dir_index) | |
14393 | dir = lh->include_dirs[fe->dir_index - 1]; | |
14394 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
14395 | ||
14396 | /* Skip the main file; we don't need it, and it must be | |
14397 | allocated last, so that it will show up before the | |
14398 | non-primary symtabs in the objfile's symtab list. */ | |
14399 | if (current_subfile == first_subfile) | |
14400 | continue; | |
14401 | ||
14402 | if (current_subfile->symtab == NULL) | |
14403 | current_subfile->symtab = allocate_symtab (current_subfile->name, | |
bb5ed363 | 14404 | objfile); |
cb1df416 DJ |
14405 | fe->symtab = current_subfile->symtab; |
14406 | } | |
14407 | } | |
c906108c SS |
14408 | } |
14409 | ||
14410 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
14411 | DIRNAME the name of the source directory which contains FILENAME | |
4f1520fb FR |
14412 | or NULL if not known. COMP_DIR is the compilation directory for the |
14413 | linetable's compilation unit or NULL if not known. | |
c906108c SS |
14414 | This routine tries to keep line numbers from identical absolute and |
14415 | relative file names in a common subfile. | |
14416 | ||
14417 | Using the `list' example from the GDB testsuite, which resides in | |
14418 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
14419 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
14420 | ||
c5aa993b JM |
14421 | DW_AT_name: /srcdir/list0.c |
14422 | DW_AT_comp_dir: /compdir | |
357e46e7 | 14423 | files.files[0].name: list0.h |
c5aa993b | 14424 | files.files[0].dir: /srcdir |
357e46e7 | 14425 | files.files[1].name: list0.c |
c5aa993b | 14426 | files.files[1].dir: /srcdir |
c906108c SS |
14427 | |
14428 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
14429 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
14430 | start_subfile will ensure that this happens provided that we pass the | |
14431 | concatenation of files.files[1].dir and files.files[1].name as the | |
14432 | subfile's name. */ | |
c906108c SS |
14433 | |
14434 | static void | |
3e43a32a MS |
14435 | dwarf2_start_subfile (char *filename, const char *dirname, |
14436 | const char *comp_dir) | |
c906108c | 14437 | { |
4f1520fb FR |
14438 | char *fullname; |
14439 | ||
14440 | /* While reading the DIEs, we call start_symtab(DW_AT_name, DW_AT_comp_dir). | |
14441 | `start_symtab' will always pass the contents of DW_AT_comp_dir as | |
14442 | second argument to start_subfile. To be consistent, we do the | |
14443 | same here. In order not to lose the line information directory, | |
14444 | we concatenate it to the filename when it makes sense. | |
14445 | Note that the Dwarf3 standard says (speaking of filenames in line | |
14446 | information): ``The directory index is ignored for file names | |
14447 | that represent full path names''. Thus ignoring dirname in the | |
14448 | `else' branch below isn't an issue. */ | |
c906108c | 14449 | |
d5166ae1 | 14450 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
4f1520fb FR |
14451 | fullname = concat (dirname, SLASH_STRING, filename, (char *)NULL); |
14452 | else | |
14453 | fullname = filename; | |
c906108c | 14454 | |
4f1520fb FR |
14455 | start_subfile (fullname, comp_dir); |
14456 | ||
14457 | if (fullname != filename) | |
14458 | xfree (fullname); | |
c906108c SS |
14459 | } |
14460 | ||
f4dc4d17 DE |
14461 | /* Start a symtab for DWARF. |
14462 | NAME, COMP_DIR, LOW_PC are passed to start_symtab. */ | |
14463 | ||
14464 | static void | |
14465 | dwarf2_start_symtab (struct dwarf2_cu *cu, | |
14466 | char *name, char *comp_dir, CORE_ADDR low_pc) | |
14467 | { | |
14468 | start_symtab (name, comp_dir, low_pc); | |
14469 | record_debugformat ("DWARF 2"); | |
14470 | record_producer (cu->producer); | |
14471 | ||
14472 | /* We assume that we're processing GCC output. */ | |
14473 | processing_gcc_compilation = 2; | |
14474 | ||
14475 | processing_has_namespace_info = 0; | |
14476 | } | |
14477 | ||
4c2df51b DJ |
14478 | static void |
14479 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 14480 | struct dwarf2_cu *cu) |
4c2df51b | 14481 | { |
e7c27a73 DJ |
14482 | struct objfile *objfile = cu->objfile; |
14483 | struct comp_unit_head *cu_header = &cu->header; | |
14484 | ||
4c2df51b DJ |
14485 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
14486 | code here to turn a symbol with DW_AT_external and a | |
14487 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
14488 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
14489 | with some versions of binutils) where shared libraries could have | |
14490 | relocations against symbols in their debug information - the | |
14491 | minimal symbol would have the right address, but the debug info | |
14492 | would not. It's no longer necessary, because we will explicitly | |
14493 | apply relocations when we read in the debug information now. */ | |
14494 | ||
14495 | /* A DW_AT_location attribute with no contents indicates that a | |
14496 | variable has been optimized away. */ | |
14497 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
14498 | { | |
14499 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; | |
14500 | return; | |
14501 | } | |
14502 | ||
14503 | /* Handle one degenerate form of location expression specially, to | |
14504 | preserve GDB's previous behavior when section offsets are | |
3019eac3 DE |
14505 | specified. If this is just a DW_OP_addr or DW_OP_GNU_addr_index |
14506 | then mark this symbol as LOC_STATIC. */ | |
4c2df51b DJ |
14507 | |
14508 | if (attr_form_is_block (attr) | |
3019eac3 DE |
14509 | && ((DW_BLOCK (attr)->data[0] == DW_OP_addr |
14510 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size) | |
14511 | || (DW_BLOCK (attr)->data[0] == DW_OP_GNU_addr_index | |
14512 | && (DW_BLOCK (attr)->size | |
14513 | == 1 + leb128_size (&DW_BLOCK (attr)->data[1]))))) | |
4c2df51b | 14514 | { |
891d2f0b | 14515 | unsigned int dummy; |
4c2df51b | 14516 | |
3019eac3 DE |
14517 | if (DW_BLOCK (attr)->data[0] == DW_OP_addr) |
14518 | SYMBOL_VALUE_ADDRESS (sym) = | |
14519 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); | |
14520 | else | |
14521 | SYMBOL_VALUE_ADDRESS (sym) = | |
14522 | read_addr_index_from_leb128 (cu, DW_BLOCK (attr)->data + 1, &dummy); | |
907fc202 | 14523 | SYMBOL_CLASS (sym) = LOC_STATIC; |
4c2df51b DJ |
14524 | fixup_symbol_section (sym, objfile); |
14525 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
14526 | SYMBOL_SECTION (sym)); | |
4c2df51b DJ |
14527 | return; |
14528 | } | |
14529 | ||
14530 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
14531 | expression evaluator, and use LOC_COMPUTED only when necessary | |
14532 | (i.e. when the value of a register or memory location is | |
14533 | referenced, or a thread-local block, etc.). Then again, it might | |
14534 | not be worthwhile. I'm assuming that it isn't unless performance | |
14535 | or memory numbers show me otherwise. */ | |
14536 | ||
e7c27a73 | 14537 | dwarf2_symbol_mark_computed (attr, sym, cu); |
4c2df51b | 14538 | SYMBOL_CLASS (sym) = LOC_COMPUTED; |
8be455d7 JK |
14539 | |
14540 | if (SYMBOL_COMPUTED_OPS (sym) == &dwarf2_loclist_funcs) | |
14541 | cu->has_loclist = 1; | |
4c2df51b DJ |
14542 | } |
14543 | ||
c906108c SS |
14544 | /* Given a pointer to a DWARF information entry, figure out if we need |
14545 | to make a symbol table entry for it, and if so, create a new entry | |
14546 | and return a pointer to it. | |
14547 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
14548 | used the passed type. |
14549 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
14550 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
14551 | |
14552 | static struct symbol * | |
34eaf542 TT |
14553 | new_symbol_full (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
14554 | struct symbol *space) | |
c906108c | 14555 | { |
e7c27a73 | 14556 | struct objfile *objfile = cu->objfile; |
c906108c SS |
14557 | struct symbol *sym = NULL; |
14558 | char *name; | |
14559 | struct attribute *attr = NULL; | |
14560 | struct attribute *attr2 = NULL; | |
e142c38c | 14561 | CORE_ADDR baseaddr; |
e37fd15a SW |
14562 | struct pending **list_to_add = NULL; |
14563 | ||
edb3359d | 14564 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c DJ |
14565 | |
14566 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 14567 | |
94af9270 | 14568 | name = dwarf2_name (die, cu); |
c906108c SS |
14569 | if (name) |
14570 | { | |
94af9270 | 14571 | const char *linkagename; |
34eaf542 | 14572 | int suppress_add = 0; |
94af9270 | 14573 | |
34eaf542 TT |
14574 | if (space) |
14575 | sym = space; | |
14576 | else | |
14577 | sym = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symbol); | |
c906108c | 14578 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
14579 | |
14580 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
33e5013e | 14581 | SYMBOL_SET_LANGUAGE (sym, cu->language); |
94af9270 KS |
14582 | linkagename = dwarf2_physname (name, die, cu); |
14583 | SYMBOL_SET_NAMES (sym, linkagename, strlen (linkagename), 0, objfile); | |
c906108c | 14584 | |
f55ee35c JK |
14585 | /* Fortran does not have mangling standard and the mangling does differ |
14586 | between gfortran, iFort etc. */ | |
14587 | if (cu->language == language_fortran | |
b250c185 | 14588 | && symbol_get_demangled_name (&(sym->ginfo)) == NULL) |
29df156d SW |
14589 | symbol_set_demangled_name (&(sym->ginfo), |
14590 | (char *) dwarf2_full_name (name, die, cu), | |
14591 | NULL); | |
f55ee35c | 14592 | |
c906108c | 14593 | /* Default assumptions. |
c5aa993b | 14594 | Use the passed type or decode it from the die. */ |
176620f1 | 14595 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
875dc2fc | 14596 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
14597 | if (type != NULL) |
14598 | SYMBOL_TYPE (sym) = type; | |
14599 | else | |
e7c27a73 | 14600 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
14601 | attr = dwarf2_attr (die, |
14602 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
14603 | cu); | |
c906108c SS |
14604 | if (attr) |
14605 | { | |
14606 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
14607 | } | |
cb1df416 | 14608 | |
edb3359d DJ |
14609 | attr = dwarf2_attr (die, |
14610 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
14611 | cu); | |
cb1df416 DJ |
14612 | if (attr) |
14613 | { | |
14614 | int file_index = DW_UNSND (attr); | |
9a619af0 | 14615 | |
cb1df416 DJ |
14616 | if (cu->line_header == NULL |
14617 | || file_index > cu->line_header->num_file_names) | |
14618 | complaint (&symfile_complaints, | |
14619 | _("file index out of range")); | |
1c3d648d | 14620 | else if (file_index > 0) |
cb1df416 DJ |
14621 | { |
14622 | struct file_entry *fe; | |
9a619af0 | 14623 | |
cb1df416 DJ |
14624 | fe = &cu->line_header->file_names[file_index - 1]; |
14625 | SYMBOL_SYMTAB (sym) = fe->symtab; | |
14626 | } | |
14627 | } | |
14628 | ||
c906108c SS |
14629 | switch (die->tag) |
14630 | { | |
14631 | case DW_TAG_label: | |
e142c38c | 14632 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c SS |
14633 | if (attr) |
14634 | { | |
14635 | SYMBOL_VALUE_ADDRESS (sym) = DW_ADDR (attr) + baseaddr; | |
14636 | } | |
0f5238ed TT |
14637 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
14638 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
c906108c | 14639 | SYMBOL_CLASS (sym) = LOC_LABEL; |
0f5238ed | 14640 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
14641 | break; |
14642 | case DW_TAG_subprogram: | |
14643 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
14644 | finish_block. */ | |
14645 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
e142c38c | 14646 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d JB |
14647 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
14648 | || cu->language == language_ada) | |
c906108c | 14649 | { |
2cfa0c8d JB |
14650 | /* Subprograms marked external are stored as a global symbol. |
14651 | Ada subprograms, whether marked external or not, are always | |
14652 | stored as a global symbol, because we want to be able to | |
14653 | access them globally. For instance, we want to be able | |
14654 | to break on a nested subprogram without having to | |
14655 | specify the context. */ | |
e37fd15a | 14656 | list_to_add = &global_symbols; |
c906108c SS |
14657 | } |
14658 | else | |
14659 | { | |
e37fd15a | 14660 | list_to_add = cu->list_in_scope; |
c906108c SS |
14661 | } |
14662 | break; | |
edb3359d DJ |
14663 | case DW_TAG_inlined_subroutine: |
14664 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
14665 | finish_block. */ | |
14666 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
14667 | SYMBOL_INLINED (sym) = 1; | |
481860b3 | 14668 | list_to_add = cu->list_in_scope; |
edb3359d | 14669 | break; |
34eaf542 TT |
14670 | case DW_TAG_template_value_param: |
14671 | suppress_add = 1; | |
14672 | /* Fall through. */ | |
72929c62 | 14673 | case DW_TAG_constant: |
c906108c | 14674 | case DW_TAG_variable: |
254e6b9e | 14675 | case DW_TAG_member: |
0963b4bd MS |
14676 | /* Compilation with minimal debug info may result in |
14677 | variables with missing type entries. Change the | |
14678 | misleading `void' type to something sensible. */ | |
c906108c | 14679 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) |
64c50499 | 14680 | SYMBOL_TYPE (sym) |
46bf5051 | 14681 | = objfile_type (objfile)->nodebug_data_symbol; |
64c50499 | 14682 | |
e142c38c | 14683 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
14684 | /* In the case of DW_TAG_member, we should only be called for |
14685 | static const members. */ | |
14686 | if (die->tag == DW_TAG_member) | |
14687 | { | |
3863f96c DE |
14688 | /* dwarf2_add_field uses die_is_declaration, |
14689 | so we do the same. */ | |
254e6b9e DE |
14690 | gdb_assert (die_is_declaration (die, cu)); |
14691 | gdb_assert (attr); | |
14692 | } | |
c906108c SS |
14693 | if (attr) |
14694 | { | |
e7c27a73 | 14695 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 14696 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 14697 | if (!suppress_add) |
34eaf542 TT |
14698 | { |
14699 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
e37fd15a | 14700 | list_to_add = &global_symbols; |
34eaf542 | 14701 | else |
e37fd15a | 14702 | list_to_add = cu->list_in_scope; |
34eaf542 | 14703 | } |
c906108c SS |
14704 | break; |
14705 | } | |
e142c38c | 14706 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
14707 | if (attr) |
14708 | { | |
e7c27a73 | 14709 | var_decode_location (attr, sym, cu); |
e142c38c | 14710 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
caac4577 JG |
14711 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
14712 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
14713 | && !dwarf2_per_objfile->has_section_at_zero) | |
14714 | { | |
14715 | /* When a static variable is eliminated by the linker, | |
14716 | the corresponding debug information is not stripped | |
14717 | out, but the variable address is set to null; | |
14718 | do not add such variables into symbol table. */ | |
14719 | } | |
14720 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 14721 | { |
f55ee35c JK |
14722 | /* Workaround gfortran PR debug/40040 - it uses |
14723 | DW_AT_location for variables in -fPIC libraries which may | |
14724 | get overriden by other libraries/executable and get | |
14725 | a different address. Resolve it by the minimal symbol | |
14726 | which may come from inferior's executable using copy | |
14727 | relocation. Make this workaround only for gfortran as for | |
14728 | other compilers GDB cannot guess the minimal symbol | |
14729 | Fortran mangling kind. */ | |
14730 | if (cu->language == language_fortran && die->parent | |
14731 | && die->parent->tag == DW_TAG_module | |
14732 | && cu->producer | |
14733 | && strncmp (cu->producer, "GNU Fortran ", 12) == 0) | |
14734 | SYMBOL_CLASS (sym) = LOC_UNRESOLVED; | |
14735 | ||
1c809c68 TT |
14736 | /* A variable with DW_AT_external is never static, |
14737 | but it may be block-scoped. */ | |
14738 | list_to_add = (cu->list_in_scope == &file_symbols | |
14739 | ? &global_symbols : cu->list_in_scope); | |
1c809c68 | 14740 | } |
c906108c | 14741 | else |
e37fd15a | 14742 | list_to_add = cu->list_in_scope; |
c906108c SS |
14743 | } |
14744 | else | |
14745 | { | |
14746 | /* We do not know the address of this symbol. | |
c5aa993b JM |
14747 | If it is an external symbol and we have type information |
14748 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
14749 | The address of the variable will then be determined from | |
14750 | the minimal symbol table whenever the variable is | |
14751 | referenced. */ | |
e142c38c | 14752 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c | 14753 | if (attr2 && (DW_UNSND (attr2) != 0) |
e142c38c | 14754 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) |
c906108c | 14755 | { |
0fe7935b DJ |
14756 | /* A variable with DW_AT_external is never static, but it |
14757 | may be block-scoped. */ | |
14758 | list_to_add = (cu->list_in_scope == &file_symbols | |
14759 | ? &global_symbols : cu->list_in_scope); | |
14760 | ||
c906108c | 14761 | SYMBOL_CLASS (sym) = LOC_UNRESOLVED; |
c906108c | 14762 | } |
442ddf59 JK |
14763 | else if (!die_is_declaration (die, cu)) |
14764 | { | |
14765 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
14766 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
14767 | if (!suppress_add) |
14768 | list_to_add = cu->list_in_scope; | |
442ddf59 | 14769 | } |
c906108c SS |
14770 | } |
14771 | break; | |
14772 | case DW_TAG_formal_parameter: | |
edb3359d DJ |
14773 | /* If we are inside a function, mark this as an argument. If |
14774 | not, we might be looking at an argument to an inlined function | |
14775 | when we do not have enough information to show inlined frames; | |
14776 | pretend it's a local variable in that case so that the user can | |
14777 | still see it. */ | |
14778 | if (context_stack_depth > 0 | |
14779 | && context_stack[context_stack_depth - 1].name != NULL) | |
14780 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
e142c38c | 14781 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
14782 | if (attr) |
14783 | { | |
e7c27a73 | 14784 | var_decode_location (attr, sym, cu); |
c906108c | 14785 | } |
e142c38c | 14786 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
14787 | if (attr) |
14788 | { | |
e7c27a73 | 14789 | dwarf2_const_value (attr, sym, cu); |
c906108c | 14790 | } |
f346a30d | 14791 | |
e37fd15a | 14792 | list_to_add = cu->list_in_scope; |
c906108c SS |
14793 | break; |
14794 | case DW_TAG_unspecified_parameters: | |
14795 | /* From varargs functions; gdb doesn't seem to have any | |
14796 | interest in this information, so just ignore it for now. | |
14797 | (FIXME?) */ | |
14798 | break; | |
34eaf542 TT |
14799 | case DW_TAG_template_type_param: |
14800 | suppress_add = 1; | |
14801 | /* Fall through. */ | |
c906108c | 14802 | case DW_TAG_class_type: |
680b30c7 | 14803 | case DW_TAG_interface_type: |
c906108c SS |
14804 | case DW_TAG_structure_type: |
14805 | case DW_TAG_union_type: | |
72019c9c | 14806 | case DW_TAG_set_type: |
c906108c SS |
14807 | case DW_TAG_enumeration_type: |
14808 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
176620f1 | 14809 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 14810 | |
63d06c5c | 14811 | { |
987504bb | 14812 | /* NOTE: carlton/2003-11-10: C++ and Java class symbols shouldn't |
63d06c5c DC |
14813 | really ever be static objects: otherwise, if you try |
14814 | to, say, break of a class's method and you're in a file | |
14815 | which doesn't mention that class, it won't work unless | |
14816 | the check for all static symbols in lookup_symbol_aux | |
14817 | saves you. See the OtherFileClass tests in | |
14818 | gdb.c++/namespace.exp. */ | |
14819 | ||
e37fd15a | 14820 | if (!suppress_add) |
34eaf542 | 14821 | { |
34eaf542 TT |
14822 | list_to_add = (cu->list_in_scope == &file_symbols |
14823 | && (cu->language == language_cplus | |
14824 | || cu->language == language_java) | |
14825 | ? &global_symbols : cu->list_in_scope); | |
63d06c5c | 14826 | |
64382290 TT |
14827 | /* The semantics of C++ state that "struct foo { |
14828 | ... }" also defines a typedef for "foo". A Java | |
14829 | class declaration also defines a typedef for the | |
14830 | class. */ | |
14831 | if (cu->language == language_cplus | |
14832 | || cu->language == language_java | |
14833 | || cu->language == language_ada) | |
14834 | { | |
14835 | /* The symbol's name is already allocated along | |
14836 | with this objfile, so we don't need to | |
14837 | duplicate it for the type. */ | |
14838 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
14839 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_SEARCH_NAME (sym); | |
14840 | } | |
63d06c5c DC |
14841 | } |
14842 | } | |
c906108c SS |
14843 | break; |
14844 | case DW_TAG_typedef: | |
63d06c5c DC |
14845 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
14846 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; | |
e37fd15a | 14847 | list_to_add = cu->list_in_scope; |
63d06c5c | 14848 | break; |
c906108c | 14849 | case DW_TAG_base_type: |
a02abb62 | 14850 | case DW_TAG_subrange_type: |
c906108c | 14851 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
176620f1 | 14852 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 14853 | list_to_add = cu->list_in_scope; |
c906108c SS |
14854 | break; |
14855 | case DW_TAG_enumerator: | |
e142c38c | 14856 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
14857 | if (attr) |
14858 | { | |
e7c27a73 | 14859 | dwarf2_const_value (attr, sym, cu); |
c906108c | 14860 | } |
63d06c5c DC |
14861 | { |
14862 | /* NOTE: carlton/2003-11-10: See comment above in the | |
14863 | DW_TAG_class_type, etc. block. */ | |
14864 | ||
e142c38c | 14865 | list_to_add = (cu->list_in_scope == &file_symbols |
987504bb JJ |
14866 | && (cu->language == language_cplus |
14867 | || cu->language == language_java) | |
e142c38c | 14868 | ? &global_symbols : cu->list_in_scope); |
63d06c5c | 14869 | } |
c906108c | 14870 | break; |
5c4e30ca DC |
14871 | case DW_TAG_namespace: |
14872 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
e37fd15a | 14873 | list_to_add = &global_symbols; |
5c4e30ca | 14874 | break; |
c906108c SS |
14875 | default: |
14876 | /* Not a tag we recognize. Hopefully we aren't processing | |
14877 | trash data, but since we must specifically ignore things | |
14878 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 14879 | this point. */ |
e2e0b3e5 | 14880 | complaint (&symfile_complaints, _("unsupported tag: '%s'"), |
4d3c2250 | 14881 | dwarf_tag_name (die->tag)); |
c906108c SS |
14882 | break; |
14883 | } | |
df8a16a1 | 14884 | |
e37fd15a SW |
14885 | if (suppress_add) |
14886 | { | |
14887 | sym->hash_next = objfile->template_symbols; | |
14888 | objfile->template_symbols = sym; | |
14889 | list_to_add = NULL; | |
14890 | } | |
14891 | ||
14892 | if (list_to_add != NULL) | |
14893 | add_symbol_to_list (sym, list_to_add); | |
14894 | ||
df8a16a1 DJ |
14895 | /* For the benefit of old versions of GCC, check for anonymous |
14896 | namespaces based on the demangled name. */ | |
14897 | if (!processing_has_namespace_info | |
94af9270 | 14898 | && cu->language == language_cplus) |
a10964d1 | 14899 | cp_scan_for_anonymous_namespaces (sym, objfile); |
c906108c SS |
14900 | } |
14901 | return (sym); | |
14902 | } | |
14903 | ||
34eaf542 TT |
14904 | /* A wrapper for new_symbol_full that always allocates a new symbol. */ |
14905 | ||
14906 | static struct symbol * | |
14907 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu) | |
14908 | { | |
14909 | return new_symbol_full (die, type, cu, NULL); | |
14910 | } | |
14911 | ||
98bfdba5 PA |
14912 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
14913 | zero-extend it as appropriate for the symbol's type. The DWARF | |
14914 | standard (v4) is not entirely clear about the meaning of using | |
14915 | DW_FORM_dataN for a constant with a signed type, where the type is | |
14916 | wider than the data. The conclusion of a discussion on the DWARF | |
14917 | list was that this is unspecified. We choose to always zero-extend | |
14918 | because that is the interpretation long in use by GCC. */ | |
c906108c | 14919 | |
98bfdba5 PA |
14920 | static gdb_byte * |
14921 | dwarf2_const_value_data (struct attribute *attr, struct type *type, | |
14922 | const char *name, struct obstack *obstack, | |
12df843f | 14923 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 14924 | { |
e7c27a73 | 14925 | struct objfile *objfile = cu->objfile; |
e17a4113 UW |
14926 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
14927 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
14928 | LONGEST l = DW_UNSND (attr); |
14929 | ||
14930 | if (bits < sizeof (*value) * 8) | |
14931 | { | |
14932 | l &= ((LONGEST) 1 << bits) - 1; | |
14933 | *value = l; | |
14934 | } | |
14935 | else if (bits == sizeof (*value) * 8) | |
14936 | *value = l; | |
14937 | else | |
14938 | { | |
14939 | gdb_byte *bytes = obstack_alloc (obstack, bits / 8); | |
14940 | store_unsigned_integer (bytes, bits / 8, byte_order, l); | |
14941 | return bytes; | |
14942 | } | |
14943 | ||
14944 | return NULL; | |
14945 | } | |
14946 | ||
14947 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
14948 | the value does not fit in *VALUE, set *BYTES - either already | |
14949 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
14950 | or, set *BATON, if we translated the constant to a location | |
14951 | expression. */ | |
14952 | ||
14953 | static void | |
14954 | dwarf2_const_value_attr (struct attribute *attr, struct type *type, | |
14955 | const char *name, struct obstack *obstack, | |
14956 | struct dwarf2_cu *cu, | |
12df843f | 14957 | LONGEST *value, gdb_byte **bytes, |
98bfdba5 PA |
14958 | struct dwarf2_locexpr_baton **baton) |
14959 | { | |
14960 | struct objfile *objfile = cu->objfile; | |
14961 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c | 14962 | struct dwarf_block *blk; |
98bfdba5 PA |
14963 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
14964 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
14965 | ||
14966 | *value = 0; | |
14967 | *bytes = NULL; | |
14968 | *baton = NULL; | |
c906108c SS |
14969 | |
14970 | switch (attr->form) | |
14971 | { | |
14972 | case DW_FORM_addr: | |
3019eac3 | 14973 | case DW_FORM_GNU_addr_index: |
ac56253d | 14974 | { |
ac56253d TT |
14975 | gdb_byte *data; |
14976 | ||
98bfdba5 PA |
14977 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
14978 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 14979 | cu_header->addr_size, |
98bfdba5 | 14980 | TYPE_LENGTH (type)); |
ac56253d TT |
14981 | /* Symbols of this form are reasonably rare, so we just |
14982 | piggyback on the existing location code rather than writing | |
14983 | a new implementation of symbol_computed_ops. */ | |
98bfdba5 PA |
14984 | *baton = obstack_alloc (&objfile->objfile_obstack, |
14985 | sizeof (struct dwarf2_locexpr_baton)); | |
14986 | (*baton)->per_cu = cu->per_cu; | |
14987 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 14988 | |
98bfdba5 PA |
14989 | (*baton)->size = 2 + cu_header->addr_size; |
14990 | data = obstack_alloc (&objfile->objfile_obstack, (*baton)->size); | |
14991 | (*baton)->data = data; | |
ac56253d TT |
14992 | |
14993 | data[0] = DW_OP_addr; | |
14994 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
14995 | byte_order, DW_ADDR (attr)); | |
14996 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 14997 | } |
c906108c | 14998 | break; |
4ac36638 | 14999 | case DW_FORM_string: |
93b5768b | 15000 | case DW_FORM_strp: |
3019eac3 | 15001 | case DW_FORM_GNU_str_index: |
98bfdba5 PA |
15002 | /* DW_STRING is already allocated on the objfile obstack, point |
15003 | directly to it. */ | |
15004 | *bytes = (gdb_byte *) DW_STRING (attr); | |
93b5768b | 15005 | break; |
c906108c SS |
15006 | case DW_FORM_block1: |
15007 | case DW_FORM_block2: | |
15008 | case DW_FORM_block4: | |
15009 | case DW_FORM_block: | |
2dc7f7b3 | 15010 | case DW_FORM_exprloc: |
c906108c | 15011 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
15012 | if (TYPE_LENGTH (type) != blk->size) |
15013 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
15014 | TYPE_LENGTH (type)); | |
15015 | *bytes = blk->data; | |
c906108c | 15016 | break; |
2df3850c JM |
15017 | |
15018 | /* The DW_AT_const_value attributes are supposed to carry the | |
15019 | symbol's value "represented as it would be on the target | |
15020 | architecture." By the time we get here, it's already been | |
15021 | converted to host endianness, so we just need to sign- or | |
15022 | zero-extend it as appropriate. */ | |
15023 | case DW_FORM_data1: | |
3e43a32a MS |
15024 | *bytes = dwarf2_const_value_data (attr, type, name, |
15025 | obstack, cu, value, 8); | |
2df3850c | 15026 | break; |
c906108c | 15027 | case DW_FORM_data2: |
3e43a32a MS |
15028 | *bytes = dwarf2_const_value_data (attr, type, name, |
15029 | obstack, cu, value, 16); | |
2df3850c | 15030 | break; |
c906108c | 15031 | case DW_FORM_data4: |
3e43a32a MS |
15032 | *bytes = dwarf2_const_value_data (attr, type, name, |
15033 | obstack, cu, value, 32); | |
2df3850c | 15034 | break; |
c906108c | 15035 | case DW_FORM_data8: |
3e43a32a MS |
15036 | *bytes = dwarf2_const_value_data (attr, type, name, |
15037 | obstack, cu, value, 64); | |
2df3850c JM |
15038 | break; |
15039 | ||
c906108c | 15040 | case DW_FORM_sdata: |
98bfdba5 | 15041 | *value = DW_SND (attr); |
2df3850c JM |
15042 | break; |
15043 | ||
c906108c | 15044 | case DW_FORM_udata: |
98bfdba5 | 15045 | *value = DW_UNSND (attr); |
c906108c | 15046 | break; |
2df3850c | 15047 | |
c906108c | 15048 | default: |
4d3c2250 | 15049 | complaint (&symfile_complaints, |
e2e0b3e5 | 15050 | _("unsupported const value attribute form: '%s'"), |
4d3c2250 | 15051 | dwarf_form_name (attr->form)); |
98bfdba5 | 15052 | *value = 0; |
c906108c SS |
15053 | break; |
15054 | } | |
15055 | } | |
15056 | ||
2df3850c | 15057 | |
98bfdba5 PA |
15058 | /* Copy constant value from an attribute to a symbol. */ |
15059 | ||
2df3850c | 15060 | static void |
98bfdba5 PA |
15061 | dwarf2_const_value (struct attribute *attr, struct symbol *sym, |
15062 | struct dwarf2_cu *cu) | |
2df3850c | 15063 | { |
98bfdba5 PA |
15064 | struct objfile *objfile = cu->objfile; |
15065 | struct comp_unit_head *cu_header = &cu->header; | |
12df843f | 15066 | LONGEST value; |
98bfdba5 PA |
15067 | gdb_byte *bytes; |
15068 | struct dwarf2_locexpr_baton *baton; | |
2df3850c | 15069 | |
98bfdba5 PA |
15070 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
15071 | SYMBOL_PRINT_NAME (sym), | |
15072 | &objfile->objfile_obstack, cu, | |
15073 | &value, &bytes, &baton); | |
2df3850c | 15074 | |
98bfdba5 PA |
15075 | if (baton != NULL) |
15076 | { | |
15077 | SYMBOL_COMPUTED_OPS (sym) = &dwarf2_locexpr_funcs; | |
15078 | SYMBOL_LOCATION_BATON (sym) = baton; | |
15079 | SYMBOL_CLASS (sym) = LOC_COMPUTED; | |
15080 | } | |
15081 | else if (bytes != NULL) | |
15082 | { | |
15083 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
15084 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; | |
15085 | } | |
15086 | else | |
15087 | { | |
15088 | SYMBOL_VALUE (sym) = value; | |
15089 | SYMBOL_CLASS (sym) = LOC_CONST; | |
15090 | } | |
2df3850c JM |
15091 | } |
15092 | ||
c906108c SS |
15093 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
15094 | ||
15095 | static struct type * | |
e7c27a73 | 15096 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 15097 | { |
c906108c | 15098 | struct attribute *type_attr; |
c906108c | 15099 | |
e142c38c | 15100 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
15101 | if (!type_attr) |
15102 | { | |
15103 | /* A missing DW_AT_type represents a void type. */ | |
46bf5051 | 15104 | return objfile_type (cu->objfile)->builtin_void; |
c906108c | 15105 | } |
348e048f | 15106 | |
673bfd45 | 15107 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
15108 | } |
15109 | ||
b4ba55a1 JB |
15110 | /* True iff CU's producer generates GNAT Ada auxiliary information |
15111 | that allows to find parallel types through that information instead | |
15112 | of having to do expensive parallel lookups by type name. */ | |
15113 | ||
15114 | static int | |
15115 | need_gnat_info (struct dwarf2_cu *cu) | |
15116 | { | |
15117 | /* FIXME: brobecker/2010-10-12: As of now, only the AdaCore version | |
15118 | of GNAT produces this auxiliary information, without any indication | |
15119 | that it is produced. Part of enhancing the FSF version of GNAT | |
15120 | to produce that information will be to put in place an indicator | |
15121 | that we can use in order to determine whether the descriptive type | |
15122 | info is available or not. One suggestion that has been made is | |
15123 | to use a new attribute, attached to the CU die. For now, assume | |
15124 | that the descriptive type info is not available. */ | |
15125 | return 0; | |
15126 | } | |
15127 | ||
b4ba55a1 JB |
15128 | /* Return the auxiliary type of the die in question using its |
15129 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
15130 | attribute is not present. */ | |
15131 | ||
15132 | static struct type * | |
15133 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
15134 | { | |
b4ba55a1 | 15135 | struct attribute *type_attr; |
b4ba55a1 JB |
15136 | |
15137 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
15138 | if (!type_attr) | |
15139 | return NULL; | |
15140 | ||
673bfd45 | 15141 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
15142 | } |
15143 | ||
15144 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
15145 | descriptive type accordingly. */ | |
15146 | ||
15147 | static void | |
15148 | set_descriptive_type (struct type *type, struct die_info *die, | |
15149 | struct dwarf2_cu *cu) | |
15150 | { | |
15151 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
15152 | ||
15153 | if (descriptive_type) | |
15154 | { | |
15155 | ALLOCATE_GNAT_AUX_TYPE (type); | |
15156 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
15157 | } | |
15158 | } | |
15159 | ||
c906108c SS |
15160 | /* Return the containing type of the die in question using its |
15161 | DW_AT_containing_type attribute. */ | |
15162 | ||
15163 | static struct type * | |
e7c27a73 | 15164 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 15165 | { |
c906108c | 15166 | struct attribute *type_attr; |
c906108c | 15167 | |
e142c38c | 15168 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
15169 | if (!type_attr) |
15170 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
15171 | "[in module %s]"), cu->objfile->name); | |
15172 | ||
673bfd45 | 15173 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
15174 | } |
15175 | ||
673bfd45 DE |
15176 | /* Look up the type of DIE in CU using its type attribute ATTR. |
15177 | If there is no type substitute an error marker. */ | |
15178 | ||
c906108c | 15179 | static struct type * |
673bfd45 DE |
15180 | lookup_die_type (struct die_info *die, struct attribute *attr, |
15181 | struct dwarf2_cu *cu) | |
c906108c | 15182 | { |
bb5ed363 | 15183 | struct objfile *objfile = cu->objfile; |
f792889a DJ |
15184 | struct type *this_type; |
15185 | ||
673bfd45 DE |
15186 | /* First see if we have it cached. */ |
15187 | ||
15188 | if (is_ref_attr (attr)) | |
15189 | { | |
b64f50a1 | 15190 | sect_offset offset = dwarf2_get_ref_die_offset (attr); |
673bfd45 DE |
15191 | |
15192 | this_type = get_die_type_at_offset (offset, cu->per_cu); | |
15193 | } | |
55f1336d | 15194 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 DE |
15195 | { |
15196 | struct signatured_type *sig_type = DW_SIGNATURED_TYPE (attr); | |
673bfd45 DE |
15197 | |
15198 | /* sig_type will be NULL if the signatured type is missing from | |
15199 | the debug info. */ | |
15200 | if (sig_type == NULL) | |
15201 | error (_("Dwarf Error: Cannot find signatured DIE referenced from DIE " | |
15202 | "at 0x%x [in module %s]"), | |
b64f50a1 | 15203 | die->offset.sect_off, objfile->name); |
673bfd45 | 15204 | |
3019eac3 DE |
15205 | gdb_assert (sig_type->per_cu.is_debug_types); |
15206 | /* If we haven't filled in type_offset_in_section yet, then we | |
15207 | haven't read the type in yet. */ | |
15208 | this_type = NULL; | |
15209 | if (sig_type->type_offset_in_section.sect_off != 0) | |
15210 | { | |
15211 | this_type = | |
15212 | get_die_type_at_offset (sig_type->type_offset_in_section, | |
15213 | &sig_type->per_cu); | |
15214 | } | |
673bfd45 DE |
15215 | } |
15216 | else | |
15217 | { | |
15218 | dump_die_for_error (die); | |
15219 | error (_("Dwarf Error: Bad type attribute %s [in module %s]"), | |
bb5ed363 | 15220 | dwarf_attr_name (attr->name), objfile->name); |
673bfd45 DE |
15221 | } |
15222 | ||
15223 | /* If not cached we need to read it in. */ | |
15224 | ||
15225 | if (this_type == NULL) | |
15226 | { | |
15227 | struct die_info *type_die; | |
15228 | struct dwarf2_cu *type_cu = cu; | |
15229 | ||
15230 | type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
3019eac3 DE |
15231 | /* If we found the type now, it's probably because the type came |
15232 | from an inter-CU reference and the type's CU got expanded before | |
15233 | ours. */ | |
15234 | this_type = get_die_type (type_die, type_cu); | |
15235 | if (this_type == NULL) | |
15236 | this_type = read_type_die_1 (type_die, type_cu); | |
673bfd45 DE |
15237 | } |
15238 | ||
15239 | /* If we still don't have a type use an error marker. */ | |
15240 | ||
15241 | if (this_type == NULL) | |
c906108c | 15242 | { |
b00fdb78 TT |
15243 | char *message, *saved; |
15244 | ||
15245 | /* read_type_die already issued a complaint. */ | |
15246 | message = xstrprintf (_("<unknown type in %s, CU 0x%x, DIE 0x%x>"), | |
bb5ed363 | 15247 | objfile->name, |
b64f50a1 JK |
15248 | cu->header.offset.sect_off, |
15249 | die->offset.sect_off); | |
bb5ed363 | 15250 | saved = obstack_copy0 (&objfile->objfile_obstack, |
b00fdb78 TT |
15251 | message, strlen (message)); |
15252 | xfree (message); | |
15253 | ||
bb5ed363 | 15254 | this_type = init_type (TYPE_CODE_ERROR, 0, 0, saved, objfile); |
c906108c | 15255 | } |
673bfd45 | 15256 | |
f792889a | 15257 | return this_type; |
c906108c SS |
15258 | } |
15259 | ||
673bfd45 DE |
15260 | /* Return the type in DIE, CU. |
15261 | Returns NULL for invalid types. | |
15262 | ||
15263 | This first does a lookup in the appropriate type_hash table, | |
15264 | and only reads the die in if necessary. | |
15265 | ||
15266 | NOTE: This can be called when reading in partial or full symbols. */ | |
15267 | ||
f792889a | 15268 | static struct type * |
e7c27a73 | 15269 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 15270 | { |
f792889a DJ |
15271 | struct type *this_type; |
15272 | ||
15273 | this_type = get_die_type (die, cu); | |
15274 | if (this_type) | |
15275 | return this_type; | |
15276 | ||
673bfd45 DE |
15277 | return read_type_die_1 (die, cu); |
15278 | } | |
15279 | ||
15280 | /* Read the type in DIE, CU. | |
15281 | Returns NULL for invalid types. */ | |
15282 | ||
15283 | static struct type * | |
15284 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
15285 | { | |
15286 | struct type *this_type = NULL; | |
15287 | ||
c906108c SS |
15288 | switch (die->tag) |
15289 | { | |
15290 | case DW_TAG_class_type: | |
680b30c7 | 15291 | case DW_TAG_interface_type: |
c906108c SS |
15292 | case DW_TAG_structure_type: |
15293 | case DW_TAG_union_type: | |
f792889a | 15294 | this_type = read_structure_type (die, cu); |
c906108c SS |
15295 | break; |
15296 | case DW_TAG_enumeration_type: | |
f792889a | 15297 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
15298 | break; |
15299 | case DW_TAG_subprogram: | |
15300 | case DW_TAG_subroutine_type: | |
edb3359d | 15301 | case DW_TAG_inlined_subroutine: |
f792889a | 15302 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
15303 | break; |
15304 | case DW_TAG_array_type: | |
f792889a | 15305 | this_type = read_array_type (die, cu); |
c906108c | 15306 | break; |
72019c9c | 15307 | case DW_TAG_set_type: |
f792889a | 15308 | this_type = read_set_type (die, cu); |
72019c9c | 15309 | break; |
c906108c | 15310 | case DW_TAG_pointer_type: |
f792889a | 15311 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
15312 | break; |
15313 | case DW_TAG_ptr_to_member_type: | |
f792889a | 15314 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
15315 | break; |
15316 | case DW_TAG_reference_type: | |
f792889a | 15317 | this_type = read_tag_reference_type (die, cu); |
c906108c SS |
15318 | break; |
15319 | case DW_TAG_const_type: | |
f792889a | 15320 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
15321 | break; |
15322 | case DW_TAG_volatile_type: | |
f792889a | 15323 | this_type = read_tag_volatile_type (die, cu); |
c906108c SS |
15324 | break; |
15325 | case DW_TAG_string_type: | |
f792889a | 15326 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
15327 | break; |
15328 | case DW_TAG_typedef: | |
f792889a | 15329 | this_type = read_typedef (die, cu); |
c906108c | 15330 | break; |
a02abb62 | 15331 | case DW_TAG_subrange_type: |
f792889a | 15332 | this_type = read_subrange_type (die, cu); |
a02abb62 | 15333 | break; |
c906108c | 15334 | case DW_TAG_base_type: |
f792889a | 15335 | this_type = read_base_type (die, cu); |
c906108c | 15336 | break; |
81a17f79 | 15337 | case DW_TAG_unspecified_type: |
f792889a | 15338 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 15339 | break; |
0114d602 DJ |
15340 | case DW_TAG_namespace: |
15341 | this_type = read_namespace_type (die, cu); | |
15342 | break; | |
f55ee35c JK |
15343 | case DW_TAG_module: |
15344 | this_type = read_module_type (die, cu); | |
15345 | break; | |
c906108c | 15346 | default: |
3e43a32a MS |
15347 | complaint (&symfile_complaints, |
15348 | _("unexpected tag in read_type_die: '%s'"), | |
4d3c2250 | 15349 | dwarf_tag_name (die->tag)); |
c906108c SS |
15350 | break; |
15351 | } | |
63d06c5c | 15352 | |
f792889a | 15353 | return this_type; |
63d06c5c DC |
15354 | } |
15355 | ||
abc72ce4 DE |
15356 | /* See if we can figure out if the class lives in a namespace. We do |
15357 | this by looking for a member function; its demangled name will | |
15358 | contain namespace info, if there is any. | |
15359 | Return the computed name or NULL. | |
15360 | Space for the result is allocated on the objfile's obstack. | |
15361 | This is the full-die version of guess_partial_die_structure_name. | |
15362 | In this case we know DIE has no useful parent. */ | |
15363 | ||
15364 | static char * | |
15365 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) | |
15366 | { | |
15367 | struct die_info *spec_die; | |
15368 | struct dwarf2_cu *spec_cu; | |
15369 | struct die_info *child; | |
15370 | ||
15371 | spec_cu = cu; | |
15372 | spec_die = die_specification (die, &spec_cu); | |
15373 | if (spec_die != NULL) | |
15374 | { | |
15375 | die = spec_die; | |
15376 | cu = spec_cu; | |
15377 | } | |
15378 | ||
15379 | for (child = die->child; | |
15380 | child != NULL; | |
15381 | child = child->sibling) | |
15382 | { | |
15383 | if (child->tag == DW_TAG_subprogram) | |
15384 | { | |
15385 | struct attribute *attr; | |
15386 | ||
15387 | attr = dwarf2_attr (child, DW_AT_linkage_name, cu); | |
15388 | if (attr == NULL) | |
15389 | attr = dwarf2_attr (child, DW_AT_MIPS_linkage_name, cu); | |
15390 | if (attr != NULL) | |
15391 | { | |
15392 | char *actual_name | |
15393 | = language_class_name_from_physname (cu->language_defn, | |
15394 | DW_STRING (attr)); | |
15395 | char *name = NULL; | |
15396 | ||
15397 | if (actual_name != NULL) | |
15398 | { | |
15399 | char *die_name = dwarf2_name (die, cu); | |
15400 | ||
15401 | if (die_name != NULL | |
15402 | && strcmp (die_name, actual_name) != 0) | |
15403 | { | |
15404 | /* Strip off the class name from the full name. | |
15405 | We want the prefix. */ | |
15406 | int die_name_len = strlen (die_name); | |
15407 | int actual_name_len = strlen (actual_name); | |
15408 | ||
15409 | /* Test for '::' as a sanity check. */ | |
15410 | if (actual_name_len > die_name_len + 2 | |
3e43a32a MS |
15411 | && actual_name[actual_name_len |
15412 | - die_name_len - 1] == ':') | |
abc72ce4 DE |
15413 | name = |
15414 | obsavestring (actual_name, | |
15415 | actual_name_len - die_name_len - 2, | |
15416 | &cu->objfile->objfile_obstack); | |
15417 | } | |
15418 | } | |
15419 | xfree (actual_name); | |
15420 | return name; | |
15421 | } | |
15422 | } | |
15423 | } | |
15424 | ||
15425 | return NULL; | |
15426 | } | |
15427 | ||
96408a79 SA |
15428 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
15429 | prefix part in such case. See | |
15430 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
15431 | ||
15432 | static char * | |
15433 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) | |
15434 | { | |
15435 | struct attribute *attr; | |
15436 | char *base; | |
15437 | ||
15438 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
15439 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
15440 | return NULL; | |
15441 | ||
15442 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
15443 | if (attr != NULL && DW_STRING (attr) != NULL) | |
15444 | return NULL; | |
15445 | ||
15446 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
15447 | if (attr == NULL) | |
15448 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
15449 | if (attr == NULL || DW_STRING (attr) == NULL) | |
15450 | return NULL; | |
15451 | ||
15452 | /* dwarf2_name had to be already called. */ | |
15453 | gdb_assert (DW_STRING_IS_CANONICAL (attr)); | |
15454 | ||
15455 | /* Strip the base name, keep any leading namespaces/classes. */ | |
15456 | base = strrchr (DW_STRING (attr), ':'); | |
15457 | if (base == NULL || base == DW_STRING (attr) || base[-1] != ':') | |
15458 | return ""; | |
15459 | ||
15460 | return obsavestring (DW_STRING (attr), &base[-1] - DW_STRING (attr), | |
15461 | &cu->objfile->objfile_obstack); | |
15462 | } | |
15463 | ||
fdde2d81 | 15464 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 15465 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 15466 | |
0114d602 DJ |
15467 | For example, if we're within the method foo() in the following |
15468 | code: | |
15469 | ||
15470 | namespace N { | |
15471 | class C { | |
15472 | void foo () { | |
15473 | } | |
15474 | }; | |
15475 | } | |
15476 | ||
15477 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 15478 | |
0d5cff50 | 15479 | static const char * |
e142c38c | 15480 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 15481 | { |
0114d602 DJ |
15482 | struct die_info *parent, *spec_die; |
15483 | struct dwarf2_cu *spec_cu; | |
15484 | struct type *parent_type; | |
96408a79 | 15485 | char *retval; |
63d06c5c | 15486 | |
f55ee35c JK |
15487 | if (cu->language != language_cplus && cu->language != language_java |
15488 | && cu->language != language_fortran) | |
0114d602 DJ |
15489 | return ""; |
15490 | ||
96408a79 SA |
15491 | retval = anonymous_struct_prefix (die, cu); |
15492 | if (retval) | |
15493 | return retval; | |
15494 | ||
0114d602 DJ |
15495 | /* We have to be careful in the presence of DW_AT_specification. |
15496 | For example, with GCC 3.4, given the code | |
15497 | ||
15498 | namespace N { | |
15499 | void foo() { | |
15500 | // Definition of N::foo. | |
15501 | } | |
15502 | } | |
15503 | ||
15504 | then we'll have a tree of DIEs like this: | |
15505 | ||
15506 | 1: DW_TAG_compile_unit | |
15507 | 2: DW_TAG_namespace // N | |
15508 | 3: DW_TAG_subprogram // declaration of N::foo | |
15509 | 4: DW_TAG_subprogram // definition of N::foo | |
15510 | DW_AT_specification // refers to die #3 | |
15511 | ||
15512 | Thus, when processing die #4, we have to pretend that we're in | |
15513 | the context of its DW_AT_specification, namely the contex of die | |
15514 | #3. */ | |
15515 | spec_cu = cu; | |
15516 | spec_die = die_specification (die, &spec_cu); | |
15517 | if (spec_die == NULL) | |
15518 | parent = die->parent; | |
15519 | else | |
63d06c5c | 15520 | { |
0114d602 DJ |
15521 | parent = spec_die->parent; |
15522 | cu = spec_cu; | |
63d06c5c | 15523 | } |
0114d602 DJ |
15524 | |
15525 | if (parent == NULL) | |
15526 | return ""; | |
98bfdba5 PA |
15527 | else if (parent->building_fullname) |
15528 | { | |
15529 | const char *name; | |
15530 | const char *parent_name; | |
15531 | ||
15532 | /* It has been seen on RealView 2.2 built binaries, | |
15533 | DW_TAG_template_type_param types actually _defined_ as | |
15534 | children of the parent class: | |
15535 | ||
15536 | enum E {}; | |
15537 | template class <class Enum> Class{}; | |
15538 | Class<enum E> class_e; | |
15539 | ||
15540 | 1: DW_TAG_class_type (Class) | |
15541 | 2: DW_TAG_enumeration_type (E) | |
15542 | 3: DW_TAG_enumerator (enum1:0) | |
15543 | 3: DW_TAG_enumerator (enum2:1) | |
15544 | ... | |
15545 | 2: DW_TAG_template_type_param | |
15546 | DW_AT_type DW_FORM_ref_udata (E) | |
15547 | ||
15548 | Besides being broken debug info, it can put GDB into an | |
15549 | infinite loop. Consider: | |
15550 | ||
15551 | When we're building the full name for Class<E>, we'll start | |
15552 | at Class, and go look over its template type parameters, | |
15553 | finding E. We'll then try to build the full name of E, and | |
15554 | reach here. We're now trying to build the full name of E, | |
15555 | and look over the parent DIE for containing scope. In the | |
15556 | broken case, if we followed the parent DIE of E, we'd again | |
15557 | find Class, and once again go look at its template type | |
15558 | arguments, etc., etc. Simply don't consider such parent die | |
15559 | as source-level parent of this die (it can't be, the language | |
15560 | doesn't allow it), and break the loop here. */ | |
15561 | name = dwarf2_name (die, cu); | |
15562 | parent_name = dwarf2_name (parent, cu); | |
15563 | complaint (&symfile_complaints, | |
15564 | _("template param type '%s' defined within parent '%s'"), | |
15565 | name ? name : "<unknown>", | |
15566 | parent_name ? parent_name : "<unknown>"); | |
15567 | return ""; | |
15568 | } | |
63d06c5c | 15569 | else |
0114d602 DJ |
15570 | switch (parent->tag) |
15571 | { | |
63d06c5c | 15572 | case DW_TAG_namespace: |
0114d602 | 15573 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
15574 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
15575 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
15576 | Work around this problem here. */ | |
15577 | if (cu->language == language_cplus | |
15578 | && strcmp (TYPE_TAG_NAME (parent_type), "::") == 0) | |
15579 | return ""; | |
0114d602 DJ |
15580 | /* We give a name to even anonymous namespaces. */ |
15581 | return TYPE_TAG_NAME (parent_type); | |
63d06c5c | 15582 | case DW_TAG_class_type: |
680b30c7 | 15583 | case DW_TAG_interface_type: |
63d06c5c | 15584 | case DW_TAG_structure_type: |
0114d602 | 15585 | case DW_TAG_union_type: |
f55ee35c | 15586 | case DW_TAG_module: |
0114d602 DJ |
15587 | parent_type = read_type_die (parent, cu); |
15588 | if (TYPE_TAG_NAME (parent_type) != NULL) | |
15589 | return TYPE_TAG_NAME (parent_type); | |
15590 | else | |
15591 | /* An anonymous structure is only allowed non-static data | |
15592 | members; no typedefs, no member functions, et cetera. | |
15593 | So it does not need a prefix. */ | |
15594 | return ""; | |
abc72ce4 | 15595 | case DW_TAG_compile_unit: |
95554aad | 15596 | case DW_TAG_partial_unit: |
abc72ce4 DE |
15597 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
15598 | if (cu->language == language_cplus | |
8b70b953 | 15599 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
15600 | && die->child != NULL |
15601 | && (die->tag == DW_TAG_class_type | |
15602 | || die->tag == DW_TAG_structure_type | |
15603 | || die->tag == DW_TAG_union_type)) | |
15604 | { | |
15605 | char *name = guess_full_die_structure_name (die, cu); | |
15606 | if (name != NULL) | |
15607 | return name; | |
15608 | } | |
15609 | return ""; | |
63d06c5c | 15610 | default: |
8176b9b8 | 15611 | return determine_prefix (parent, cu); |
63d06c5c | 15612 | } |
63d06c5c DC |
15613 | } |
15614 | ||
3e43a32a MS |
15615 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
15616 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
15617 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
15618 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
15619 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 15620 | |
f55ee35c | 15621 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
15622 | |
15623 | static char * | |
f55ee35c JK |
15624 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
15625 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 15626 | { |
f55ee35c | 15627 | const char *lead = ""; |
5c315b68 | 15628 | const char *sep; |
63d06c5c | 15629 | |
3e43a32a MS |
15630 | if (suffix == NULL || suffix[0] == '\0' |
15631 | || prefix == NULL || prefix[0] == '\0') | |
987504bb JJ |
15632 | sep = ""; |
15633 | else if (cu->language == language_java) | |
15634 | sep = "."; | |
f55ee35c JK |
15635 | else if (cu->language == language_fortran && physname) |
15636 | { | |
15637 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
15638 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
15639 | ||
15640 | lead = "__"; | |
15641 | sep = "_MOD_"; | |
15642 | } | |
987504bb JJ |
15643 | else |
15644 | sep = "::"; | |
63d06c5c | 15645 | |
6dd47d34 DE |
15646 | if (prefix == NULL) |
15647 | prefix = ""; | |
15648 | if (suffix == NULL) | |
15649 | suffix = ""; | |
15650 | ||
987504bb JJ |
15651 | if (obs == NULL) |
15652 | { | |
3e43a32a MS |
15653 | char *retval |
15654 | = xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1); | |
9a619af0 | 15655 | |
f55ee35c JK |
15656 | strcpy (retval, lead); |
15657 | strcat (retval, prefix); | |
6dd47d34 DE |
15658 | strcat (retval, sep); |
15659 | strcat (retval, suffix); | |
63d06c5c DC |
15660 | return retval; |
15661 | } | |
987504bb JJ |
15662 | else |
15663 | { | |
15664 | /* We have an obstack. */ | |
f55ee35c | 15665 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 15666 | } |
63d06c5c DC |
15667 | } |
15668 | ||
c906108c SS |
15669 | /* Return sibling of die, NULL if no sibling. */ |
15670 | ||
f9aca02d | 15671 | static struct die_info * |
fba45db2 | 15672 | sibling_die (struct die_info *die) |
c906108c | 15673 | { |
639d11d3 | 15674 | return die->sibling; |
c906108c SS |
15675 | } |
15676 | ||
71c25dea TT |
15677 | /* Get name of a die, return NULL if not found. */ |
15678 | ||
15679 | static char * | |
15680 | dwarf2_canonicalize_name (char *name, struct dwarf2_cu *cu, | |
15681 | struct obstack *obstack) | |
15682 | { | |
15683 | if (name && cu->language == language_cplus) | |
15684 | { | |
15685 | char *canon_name = cp_canonicalize_string (name); | |
15686 | ||
15687 | if (canon_name != NULL) | |
15688 | { | |
15689 | if (strcmp (canon_name, name) != 0) | |
15690 | name = obsavestring (canon_name, strlen (canon_name), | |
15691 | obstack); | |
15692 | xfree (canon_name); | |
15693 | } | |
15694 | } | |
15695 | ||
15696 | return name; | |
c906108c SS |
15697 | } |
15698 | ||
9219021c DC |
15699 | /* Get name of a die, return NULL if not found. */ |
15700 | ||
15701 | static char * | |
e142c38c | 15702 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
15703 | { |
15704 | struct attribute *attr; | |
15705 | ||
e142c38c | 15706 | attr = dwarf2_attr (die, DW_AT_name, cu); |
53832f31 TT |
15707 | if ((!attr || !DW_STRING (attr)) |
15708 | && die->tag != DW_TAG_class_type | |
15709 | && die->tag != DW_TAG_interface_type | |
15710 | && die->tag != DW_TAG_structure_type | |
15711 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
15712 | return NULL; |
15713 | ||
15714 | switch (die->tag) | |
15715 | { | |
15716 | case DW_TAG_compile_unit: | |
95554aad | 15717 | case DW_TAG_partial_unit: |
71c25dea TT |
15718 | /* Compilation units have a DW_AT_name that is a filename, not |
15719 | a source language identifier. */ | |
15720 | case DW_TAG_enumeration_type: | |
15721 | case DW_TAG_enumerator: | |
15722 | /* These tags always have simple identifiers already; no need | |
15723 | to canonicalize them. */ | |
15724 | return DW_STRING (attr); | |
907af001 | 15725 | |
418835cc KS |
15726 | case DW_TAG_subprogram: |
15727 | /* Java constructors will all be named "<init>", so return | |
15728 | the class name when we see this special case. */ | |
15729 | if (cu->language == language_java | |
15730 | && DW_STRING (attr) != NULL | |
15731 | && strcmp (DW_STRING (attr), "<init>") == 0) | |
15732 | { | |
15733 | struct dwarf2_cu *spec_cu = cu; | |
15734 | struct die_info *spec_die; | |
15735 | ||
15736 | /* GCJ will output '<init>' for Java constructor names. | |
15737 | For this special case, return the name of the parent class. */ | |
15738 | ||
15739 | /* GCJ may output suprogram DIEs with AT_specification set. | |
15740 | If so, use the name of the specified DIE. */ | |
15741 | spec_die = die_specification (die, &spec_cu); | |
15742 | if (spec_die != NULL) | |
15743 | return dwarf2_name (spec_die, spec_cu); | |
15744 | ||
15745 | do | |
15746 | { | |
15747 | die = die->parent; | |
15748 | if (die->tag == DW_TAG_class_type) | |
15749 | return dwarf2_name (die, cu); | |
15750 | } | |
95554aad TT |
15751 | while (die->tag != DW_TAG_compile_unit |
15752 | && die->tag != DW_TAG_partial_unit); | |
418835cc | 15753 | } |
907af001 UW |
15754 | break; |
15755 | ||
15756 | case DW_TAG_class_type: | |
15757 | case DW_TAG_interface_type: | |
15758 | case DW_TAG_structure_type: | |
15759 | case DW_TAG_union_type: | |
15760 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
15761 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
15762 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
15763 | and GCC 4.4. We work around this problem by ignoring these. */ | |
53832f31 TT |
15764 | if (attr && DW_STRING (attr) |
15765 | && (strncmp (DW_STRING (attr), "._", 2) == 0 | |
15766 | || strncmp (DW_STRING (attr), "<anonymous", 10) == 0)) | |
907af001 | 15767 | return NULL; |
53832f31 TT |
15768 | |
15769 | /* GCC might emit a nameless typedef that has a linkage name. See | |
15770 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
15771 | if (!attr || DW_STRING (attr) == NULL) | |
15772 | { | |
df5c6c50 | 15773 | char *demangled = NULL; |
53832f31 TT |
15774 | |
15775 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
15776 | if (attr == NULL) | |
15777 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
15778 | ||
15779 | if (attr == NULL || DW_STRING (attr) == NULL) | |
15780 | return NULL; | |
15781 | ||
df5c6c50 JK |
15782 | /* Avoid demangling DW_STRING (attr) the second time on a second |
15783 | call for the same DIE. */ | |
15784 | if (!DW_STRING_IS_CANONICAL (attr)) | |
15785 | demangled = cplus_demangle (DW_STRING (attr), DMGL_TYPES); | |
53832f31 TT |
15786 | |
15787 | if (demangled) | |
15788 | { | |
96408a79 SA |
15789 | char *base; |
15790 | ||
53832f31 | 15791 | /* FIXME: we already did this for the partial symbol... */ |
96408a79 SA |
15792 | DW_STRING (attr) = obsavestring (demangled, strlen (demangled), |
15793 | &cu->objfile->objfile_obstack); | |
53832f31 TT |
15794 | DW_STRING_IS_CANONICAL (attr) = 1; |
15795 | xfree (demangled); | |
96408a79 SA |
15796 | |
15797 | /* Strip any leading namespaces/classes, keep only the base name. | |
15798 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
15799 | base = strrchr (DW_STRING (attr), ':'); | |
15800 | if (base && base > DW_STRING (attr) && base[-1] == ':') | |
15801 | return &base[1]; | |
15802 | else | |
15803 | return DW_STRING (attr); | |
53832f31 TT |
15804 | } |
15805 | } | |
907af001 UW |
15806 | break; |
15807 | ||
71c25dea | 15808 | default: |
907af001 UW |
15809 | break; |
15810 | } | |
15811 | ||
15812 | if (!DW_STRING_IS_CANONICAL (attr)) | |
15813 | { | |
15814 | DW_STRING (attr) | |
15815 | = dwarf2_canonicalize_name (DW_STRING (attr), cu, | |
15816 | &cu->objfile->objfile_obstack); | |
15817 | DW_STRING_IS_CANONICAL (attr) = 1; | |
71c25dea | 15818 | } |
907af001 | 15819 | return DW_STRING (attr); |
9219021c DC |
15820 | } |
15821 | ||
15822 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
15823 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
15824 | containing the return value on output. */ | |
9219021c DC |
15825 | |
15826 | static struct die_info * | |
f2f0e013 | 15827 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
15828 | { |
15829 | struct attribute *attr; | |
9219021c | 15830 | |
f2f0e013 | 15831 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
15832 | if (attr == NULL) |
15833 | return NULL; | |
15834 | ||
f2f0e013 | 15835 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
15836 | } |
15837 | ||
c906108c SS |
15838 | /* Convert a DIE tag into its string name. */ |
15839 | ||
f39c6ffd | 15840 | static const char * |
aa1ee363 | 15841 | dwarf_tag_name (unsigned tag) |
c906108c | 15842 | { |
f39c6ffd TT |
15843 | const char *name = get_DW_TAG_name (tag); |
15844 | ||
15845 | if (name == NULL) | |
15846 | return "DW_TAG_<unknown>"; | |
15847 | ||
15848 | return name; | |
c906108c SS |
15849 | } |
15850 | ||
15851 | /* Convert a DWARF attribute code into its string name. */ | |
15852 | ||
f39c6ffd | 15853 | static const char * |
aa1ee363 | 15854 | dwarf_attr_name (unsigned attr) |
c906108c | 15855 | { |
f39c6ffd TT |
15856 | const char *name; |
15857 | ||
c764a876 | 15858 | #ifdef MIPS /* collides with DW_AT_HP_block_index */ |
f39c6ffd TT |
15859 | if (attr == DW_AT_MIPS_fde) |
15860 | return "DW_AT_MIPS_fde"; | |
15861 | #else | |
15862 | if (attr == DW_AT_HP_block_index) | |
15863 | return "DW_AT_HP_block_index"; | |
c764a876 | 15864 | #endif |
f39c6ffd TT |
15865 | |
15866 | name = get_DW_AT_name (attr); | |
15867 | ||
15868 | if (name == NULL) | |
15869 | return "DW_AT_<unknown>"; | |
15870 | ||
15871 | return name; | |
c906108c SS |
15872 | } |
15873 | ||
15874 | /* Convert a DWARF value form code into its string name. */ | |
15875 | ||
f39c6ffd | 15876 | static const char * |
aa1ee363 | 15877 | dwarf_form_name (unsigned form) |
c906108c | 15878 | { |
f39c6ffd TT |
15879 | const char *name = get_DW_FORM_name (form); |
15880 | ||
15881 | if (name == NULL) | |
15882 | return "DW_FORM_<unknown>"; | |
15883 | ||
15884 | return name; | |
c906108c SS |
15885 | } |
15886 | ||
15887 | static char * | |
fba45db2 | 15888 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
15889 | { |
15890 | if (mybool) | |
15891 | return "TRUE"; | |
15892 | else | |
15893 | return "FALSE"; | |
15894 | } | |
15895 | ||
15896 | /* Convert a DWARF type code into its string name. */ | |
15897 | ||
f39c6ffd | 15898 | static const char * |
aa1ee363 | 15899 | dwarf_type_encoding_name (unsigned enc) |
c906108c | 15900 | { |
f39c6ffd | 15901 | const char *name = get_DW_ATE_name (enc); |
c906108c | 15902 | |
f39c6ffd TT |
15903 | if (name == NULL) |
15904 | return "DW_ATE_<unknown>"; | |
c906108c | 15905 | |
f39c6ffd | 15906 | return name; |
c906108c | 15907 | } |
c906108c | 15908 | |
f9aca02d | 15909 | static void |
d97bc12b | 15910 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
15911 | { |
15912 | unsigned int i; | |
15913 | ||
d97bc12b DE |
15914 | print_spaces (indent, f); |
15915 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset 0x%x)\n", | |
b64f50a1 | 15916 | dwarf_tag_name (die->tag), die->abbrev, die->offset.sect_off); |
d97bc12b DE |
15917 | |
15918 | if (die->parent != NULL) | |
15919 | { | |
15920 | print_spaces (indent, f); | |
15921 | fprintf_unfiltered (f, " parent at offset: 0x%x\n", | |
b64f50a1 | 15922 | die->parent->offset.sect_off); |
d97bc12b DE |
15923 | } |
15924 | ||
15925 | print_spaces (indent, f); | |
15926 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 15927 | dwarf_bool_name (die->child != NULL)); |
c906108c | 15928 | |
d97bc12b DE |
15929 | print_spaces (indent, f); |
15930 | fprintf_unfiltered (f, " attributes:\n"); | |
15931 | ||
c906108c SS |
15932 | for (i = 0; i < die->num_attrs; ++i) |
15933 | { | |
d97bc12b DE |
15934 | print_spaces (indent, f); |
15935 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
15936 | dwarf_attr_name (die->attrs[i].name), |
15937 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 15938 | |
c906108c SS |
15939 | switch (die->attrs[i].form) |
15940 | { | |
c906108c | 15941 | case DW_FORM_addr: |
3019eac3 | 15942 | case DW_FORM_GNU_addr_index: |
d97bc12b | 15943 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 15944 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
15945 | break; |
15946 | case DW_FORM_block2: | |
15947 | case DW_FORM_block4: | |
15948 | case DW_FORM_block: | |
15949 | case DW_FORM_block1: | |
3e43a32a MS |
15950 | fprintf_unfiltered (f, "block: size %d", |
15951 | DW_BLOCK (&die->attrs[i])->size); | |
c906108c | 15952 | break; |
2dc7f7b3 TT |
15953 | case DW_FORM_exprloc: |
15954 | fprintf_unfiltered (f, "expression: size %u", | |
15955 | DW_BLOCK (&die->attrs[i])->size); | |
15956 | break; | |
4568ecf9 DE |
15957 | case DW_FORM_ref_addr: |
15958 | fprintf_unfiltered (f, "ref address: "); | |
15959 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
15960 | break; | |
10b3939b DJ |
15961 | case DW_FORM_ref1: |
15962 | case DW_FORM_ref2: | |
15963 | case DW_FORM_ref4: | |
4568ecf9 DE |
15964 | case DW_FORM_ref8: |
15965 | case DW_FORM_ref_udata: | |
d97bc12b | 15966 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
4568ecf9 | 15967 | (long) (DW_UNSND (&die->attrs[i]))); |
10b3939b | 15968 | break; |
c906108c SS |
15969 | case DW_FORM_data1: |
15970 | case DW_FORM_data2: | |
15971 | case DW_FORM_data4: | |
ce5d95e1 | 15972 | case DW_FORM_data8: |
c906108c SS |
15973 | case DW_FORM_udata: |
15974 | case DW_FORM_sdata: | |
43bbcdc2 PH |
15975 | fprintf_unfiltered (f, "constant: %s", |
15976 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 15977 | break; |
2dc7f7b3 TT |
15978 | case DW_FORM_sec_offset: |
15979 | fprintf_unfiltered (f, "section offset: %s", | |
15980 | pulongest (DW_UNSND (&die->attrs[i]))); | |
15981 | break; | |
55f1336d | 15982 | case DW_FORM_ref_sig8: |
348e048f DE |
15983 | if (DW_SIGNATURED_TYPE (&die->attrs[i]) != NULL) |
15984 | fprintf_unfiltered (f, "signatured type, offset: 0x%x", | |
b64f50a1 | 15985 | DW_SIGNATURED_TYPE (&die->attrs[i])->per_cu.offset.sect_off); |
348e048f DE |
15986 | else |
15987 | fprintf_unfiltered (f, "signatured type, offset: unknown"); | |
15988 | break; | |
c906108c | 15989 | case DW_FORM_string: |
4bdf3d34 | 15990 | case DW_FORM_strp: |
3019eac3 | 15991 | case DW_FORM_GNU_str_index: |
8285870a | 15992 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 15993 | DW_STRING (&die->attrs[i]) |
8285870a JK |
15994 | ? DW_STRING (&die->attrs[i]) : "", |
15995 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
15996 | break; |
15997 | case DW_FORM_flag: | |
15998 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 15999 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 16000 | else |
d97bc12b | 16001 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 16002 | break; |
2dc7f7b3 TT |
16003 | case DW_FORM_flag_present: |
16004 | fprintf_unfiltered (f, "flag: TRUE"); | |
16005 | break; | |
a8329558 | 16006 | case DW_FORM_indirect: |
0963b4bd MS |
16007 | /* The reader will have reduced the indirect form to |
16008 | the "base form" so this form should not occur. */ | |
3e43a32a MS |
16009 | fprintf_unfiltered (f, |
16010 | "unexpected attribute form: DW_FORM_indirect"); | |
a8329558 | 16011 | break; |
c906108c | 16012 | default: |
d97bc12b | 16013 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 16014 | die->attrs[i].form); |
d97bc12b | 16015 | break; |
c906108c | 16016 | } |
d97bc12b | 16017 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
16018 | } |
16019 | } | |
16020 | ||
f9aca02d | 16021 | static void |
d97bc12b | 16022 | dump_die_for_error (struct die_info *die) |
c906108c | 16023 | { |
d97bc12b DE |
16024 | dump_die_shallow (gdb_stderr, 0, die); |
16025 | } | |
16026 | ||
16027 | static void | |
16028 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
16029 | { | |
16030 | int indent = level * 4; | |
16031 | ||
16032 | gdb_assert (die != NULL); | |
16033 | ||
16034 | if (level >= max_level) | |
16035 | return; | |
16036 | ||
16037 | dump_die_shallow (f, indent, die); | |
16038 | ||
16039 | if (die->child != NULL) | |
c906108c | 16040 | { |
d97bc12b DE |
16041 | print_spaces (indent, f); |
16042 | fprintf_unfiltered (f, " Children:"); | |
16043 | if (level + 1 < max_level) | |
16044 | { | |
16045 | fprintf_unfiltered (f, "\n"); | |
16046 | dump_die_1 (f, level + 1, max_level, die->child); | |
16047 | } | |
16048 | else | |
16049 | { | |
3e43a32a MS |
16050 | fprintf_unfiltered (f, |
16051 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
16052 | } |
16053 | } | |
16054 | ||
16055 | if (die->sibling != NULL && level > 0) | |
16056 | { | |
16057 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
16058 | } |
16059 | } | |
16060 | ||
d97bc12b DE |
16061 | /* This is called from the pdie macro in gdbinit.in. |
16062 | It's not static so gcc will keep a copy callable from gdb. */ | |
16063 | ||
16064 | void | |
16065 | dump_die (struct die_info *die, int max_level) | |
16066 | { | |
16067 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
16068 | } | |
16069 | ||
f9aca02d | 16070 | static void |
51545339 | 16071 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16072 | { |
51545339 | 16073 | void **slot; |
c906108c | 16074 | |
b64f50a1 JK |
16075 | slot = htab_find_slot_with_hash (cu->die_hash, die, die->offset.sect_off, |
16076 | INSERT); | |
51545339 DJ |
16077 | |
16078 | *slot = die; | |
c906108c SS |
16079 | } |
16080 | ||
b64f50a1 JK |
16081 | /* DW_ADDR is always stored already as sect_offset; despite for the forms |
16082 | besides DW_FORM_ref_addr it is stored as cu_offset in the DWARF file. */ | |
16083 | ||
93311388 DE |
16084 | static int |
16085 | is_ref_attr (struct attribute *attr) | |
c906108c | 16086 | { |
c906108c SS |
16087 | switch (attr->form) |
16088 | { | |
16089 | case DW_FORM_ref_addr: | |
c906108c SS |
16090 | case DW_FORM_ref1: |
16091 | case DW_FORM_ref2: | |
16092 | case DW_FORM_ref4: | |
613e1657 | 16093 | case DW_FORM_ref8: |
c906108c | 16094 | case DW_FORM_ref_udata: |
93311388 | 16095 | return 1; |
c906108c | 16096 | default: |
93311388 | 16097 | return 0; |
c906108c | 16098 | } |
93311388 DE |
16099 | } |
16100 | ||
b64f50a1 JK |
16101 | /* Return DIE offset of ATTR. Return 0 with complaint if ATTR is not of the |
16102 | required kind. */ | |
16103 | ||
16104 | static sect_offset | |
93311388 DE |
16105 | dwarf2_get_ref_die_offset (struct attribute *attr) |
16106 | { | |
4568ecf9 | 16107 | sect_offset retval = { DW_UNSND (attr) }; |
b64f50a1 | 16108 | |
93311388 | 16109 | if (is_ref_attr (attr)) |
b64f50a1 | 16110 | return retval; |
93311388 | 16111 | |
b64f50a1 | 16112 | retval.sect_off = 0; |
93311388 DE |
16113 | complaint (&symfile_complaints, |
16114 | _("unsupported die ref attribute form: '%s'"), | |
16115 | dwarf_form_name (attr->form)); | |
b64f50a1 | 16116 | return retval; |
c906108c SS |
16117 | } |
16118 | ||
43bbcdc2 PH |
16119 | /* Return the constant value held by ATTR. Return DEFAULT_VALUE if |
16120 | * the value held by the attribute is not constant. */ | |
a02abb62 | 16121 | |
43bbcdc2 | 16122 | static LONGEST |
a02abb62 JB |
16123 | dwarf2_get_attr_constant_value (struct attribute *attr, int default_value) |
16124 | { | |
16125 | if (attr->form == DW_FORM_sdata) | |
16126 | return DW_SND (attr); | |
16127 | else if (attr->form == DW_FORM_udata | |
16128 | || attr->form == DW_FORM_data1 | |
16129 | || attr->form == DW_FORM_data2 | |
16130 | || attr->form == DW_FORM_data4 | |
16131 | || attr->form == DW_FORM_data8) | |
16132 | return DW_UNSND (attr); | |
16133 | else | |
16134 | { | |
3e43a32a MS |
16135 | complaint (&symfile_complaints, |
16136 | _("Attribute value is not a constant (%s)"), | |
a02abb62 JB |
16137 | dwarf_form_name (attr->form)); |
16138 | return default_value; | |
16139 | } | |
16140 | } | |
16141 | ||
348e048f DE |
16142 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
16143 | On entry *REF_CU is the CU of SRC_DIE. | |
16144 | On exit *REF_CU is the CU of the result. */ | |
16145 | ||
16146 | static struct die_info * | |
16147 | follow_die_ref_or_sig (struct die_info *src_die, struct attribute *attr, | |
16148 | struct dwarf2_cu **ref_cu) | |
16149 | { | |
16150 | struct die_info *die; | |
16151 | ||
16152 | if (is_ref_attr (attr)) | |
16153 | die = follow_die_ref (src_die, attr, ref_cu); | |
55f1336d | 16154 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
16155 | die = follow_die_sig (src_die, attr, ref_cu); |
16156 | else | |
16157 | { | |
16158 | dump_die_for_error (src_die); | |
16159 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
16160 | (*ref_cu)->objfile->name); | |
16161 | } | |
16162 | ||
16163 | return die; | |
03dd20cc DJ |
16164 | } |
16165 | ||
5c631832 | 16166 | /* Follow reference OFFSET. |
673bfd45 DE |
16167 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
16168 | On exit *REF_CU is the CU of the result. | |
16169 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 16170 | |
f9aca02d | 16171 | static struct die_info * |
b64f50a1 | 16172 | follow_die_offset (sect_offset offset, struct dwarf2_cu **ref_cu) |
c906108c | 16173 | { |
10b3939b | 16174 | struct die_info temp_die; |
f2f0e013 | 16175 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
10b3939b | 16176 | |
348e048f DE |
16177 | gdb_assert (cu->per_cu != NULL); |
16178 | ||
98bfdba5 PA |
16179 | target_cu = cu; |
16180 | ||
3019eac3 | 16181 | if (cu->per_cu->is_debug_types) |
348e048f DE |
16182 | { |
16183 | /* .debug_types CUs cannot reference anything outside their CU. | |
16184 | If they need to, they have to reference a signatured type via | |
55f1336d | 16185 | DW_FORM_ref_sig8. */ |
348e048f | 16186 | if (! offset_in_cu_p (&cu->header, offset)) |
5c631832 | 16187 | return NULL; |
348e048f DE |
16188 | } |
16189 | else if (! offset_in_cu_p (&cu->header, offset)) | |
10b3939b DJ |
16190 | { |
16191 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 16192 | |
45452591 | 16193 | per_cu = dwarf2_find_containing_comp_unit (offset, cu->objfile); |
03dd20cc DJ |
16194 | |
16195 | /* If necessary, add it to the queue and load its DIEs. */ | |
95554aad TT |
16196 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
16197 | load_full_comp_unit (per_cu, cu->language); | |
03dd20cc | 16198 | |
10b3939b DJ |
16199 | target_cu = per_cu->cu; |
16200 | } | |
98bfdba5 PA |
16201 | else if (cu->dies == NULL) |
16202 | { | |
16203 | /* We're loading full DIEs during partial symbol reading. */ | |
16204 | gdb_assert (dwarf2_per_objfile->reading_partial_symbols); | |
95554aad | 16205 | load_full_comp_unit (cu->per_cu, language_minimal); |
98bfdba5 | 16206 | } |
c906108c | 16207 | |
f2f0e013 | 16208 | *ref_cu = target_cu; |
51545339 | 16209 | temp_die.offset = offset; |
b64f50a1 | 16210 | return htab_find_with_hash (target_cu->die_hash, &temp_die, offset.sect_off); |
5c631832 | 16211 | } |
10b3939b | 16212 | |
5c631832 JK |
16213 | /* Follow reference attribute ATTR of SRC_DIE. |
16214 | On entry *REF_CU is the CU of SRC_DIE. | |
16215 | On exit *REF_CU is the CU of the result. */ | |
16216 | ||
16217 | static struct die_info * | |
16218 | follow_die_ref (struct die_info *src_die, struct attribute *attr, | |
16219 | struct dwarf2_cu **ref_cu) | |
16220 | { | |
b64f50a1 | 16221 | sect_offset offset = dwarf2_get_ref_die_offset (attr); |
5c631832 JK |
16222 | struct dwarf2_cu *cu = *ref_cu; |
16223 | struct die_info *die; | |
16224 | ||
16225 | die = follow_die_offset (offset, ref_cu); | |
16226 | if (!die) | |
16227 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced from DIE " | |
16228 | "at 0x%x [in module %s]"), | |
b64f50a1 | 16229 | offset.sect_off, src_die->offset.sect_off, cu->objfile->name); |
348e048f | 16230 | |
5c631832 JK |
16231 | return die; |
16232 | } | |
16233 | ||
d83e736b JK |
16234 | /* Return DWARF block referenced by DW_AT_location of DIE at OFFSET at PER_CU. |
16235 | Returned value is intended for DW_OP_call*. Returned | |
16236 | dwarf2_locexpr_baton->data has lifetime of PER_CU->OBJFILE. */ | |
5c631832 JK |
16237 | |
16238 | struct dwarf2_locexpr_baton | |
b64f50a1 | 16239 | dwarf2_fetch_die_location_block (cu_offset offset_in_cu, |
8cf6f0b1 TT |
16240 | struct dwarf2_per_cu_data *per_cu, |
16241 | CORE_ADDR (*get_frame_pc) (void *baton), | |
16242 | void *baton) | |
5c631832 | 16243 | { |
b64f50a1 | 16244 | sect_offset offset = { per_cu->offset.sect_off + offset_in_cu.cu_off }; |
918dd910 | 16245 | struct dwarf2_cu *cu; |
5c631832 JK |
16246 | struct die_info *die; |
16247 | struct attribute *attr; | |
16248 | struct dwarf2_locexpr_baton retval; | |
16249 | ||
8cf6f0b1 TT |
16250 | dw2_setup (per_cu->objfile); |
16251 | ||
918dd910 JK |
16252 | if (per_cu->cu == NULL) |
16253 | load_cu (per_cu); | |
16254 | cu = per_cu->cu; | |
16255 | ||
5c631832 JK |
16256 | die = follow_die_offset (offset, &cu); |
16257 | if (!die) | |
16258 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced in module %s"), | |
b64f50a1 | 16259 | offset.sect_off, per_cu->objfile->name); |
5c631832 JK |
16260 | |
16261 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
16262 | if (!attr) | |
16263 | { | |
e103e986 JK |
16264 | /* DWARF: "If there is no such attribute, then there is no effect.". |
16265 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 16266 | |
e103e986 | 16267 | retval.data = NULL; |
5c631832 JK |
16268 | retval.size = 0; |
16269 | } | |
8cf6f0b1 TT |
16270 | else if (attr_form_is_section_offset (attr)) |
16271 | { | |
16272 | struct dwarf2_loclist_baton loclist_baton; | |
16273 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
16274 | size_t size; | |
16275 | ||
16276 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
16277 | ||
16278 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
16279 | &size, pc); | |
16280 | retval.size = size; | |
16281 | } | |
5c631832 JK |
16282 | else |
16283 | { | |
16284 | if (!attr_form_is_block (attr)) | |
16285 | error (_("Dwarf Error: DIE at 0x%x referenced in module %s " | |
16286 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), | |
b64f50a1 | 16287 | offset.sect_off, per_cu->objfile->name); |
5c631832 JK |
16288 | |
16289 | retval.data = DW_BLOCK (attr)->data; | |
16290 | retval.size = DW_BLOCK (attr)->size; | |
16291 | } | |
16292 | retval.per_cu = cu->per_cu; | |
918dd910 | 16293 | |
918dd910 JK |
16294 | age_cached_comp_units (); |
16295 | ||
5c631832 | 16296 | return retval; |
348e048f DE |
16297 | } |
16298 | ||
8a9b8146 TT |
16299 | /* Return the type of the DIE at DIE_OFFSET in the CU named by |
16300 | PER_CU. */ | |
16301 | ||
16302 | struct type * | |
b64f50a1 | 16303 | dwarf2_get_die_type (cu_offset die_offset, |
8a9b8146 TT |
16304 | struct dwarf2_per_cu_data *per_cu) |
16305 | { | |
b64f50a1 JK |
16306 | sect_offset die_offset_sect; |
16307 | ||
8a9b8146 | 16308 | dw2_setup (per_cu->objfile); |
b64f50a1 JK |
16309 | |
16310 | die_offset_sect.sect_off = per_cu->offset.sect_off + die_offset.cu_off; | |
16311 | return get_die_type_at_offset (die_offset_sect, per_cu); | |
8a9b8146 TT |
16312 | } |
16313 | ||
348e048f DE |
16314 | /* Follow the signature attribute ATTR in SRC_DIE. |
16315 | On entry *REF_CU is the CU of SRC_DIE. | |
16316 | On exit *REF_CU is the CU of the result. */ | |
16317 | ||
16318 | static struct die_info * | |
16319 | follow_die_sig (struct die_info *src_die, struct attribute *attr, | |
16320 | struct dwarf2_cu **ref_cu) | |
16321 | { | |
16322 | struct objfile *objfile = (*ref_cu)->objfile; | |
16323 | struct die_info temp_die; | |
16324 | struct signatured_type *sig_type = DW_SIGNATURED_TYPE (attr); | |
16325 | struct dwarf2_cu *sig_cu; | |
16326 | struct die_info *die; | |
16327 | ||
16328 | /* sig_type will be NULL if the signatured type is missing from | |
16329 | the debug info. */ | |
16330 | if (sig_type == NULL) | |
16331 | error (_("Dwarf Error: Cannot find signatured DIE referenced from DIE " | |
16332 | "at 0x%x [in module %s]"), | |
b64f50a1 | 16333 | src_die->offset.sect_off, objfile->name); |
348e048f DE |
16334 | |
16335 | /* If necessary, add it to the queue and load its DIEs. */ | |
16336 | ||
95554aad | 16337 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, language_minimal)) |
a0f42c21 | 16338 | read_signatured_type (sig_type); |
348e048f DE |
16339 | |
16340 | gdb_assert (sig_type->per_cu.cu != NULL); | |
16341 | ||
16342 | sig_cu = sig_type->per_cu.cu; | |
3019eac3 DE |
16343 | gdb_assert (sig_type->type_offset_in_section.sect_off != 0); |
16344 | temp_die.offset = sig_type->type_offset_in_section; | |
b64f50a1 JK |
16345 | die = htab_find_with_hash (sig_cu->die_hash, &temp_die, |
16346 | temp_die.offset.sect_off); | |
348e048f DE |
16347 | if (die) |
16348 | { | |
16349 | *ref_cu = sig_cu; | |
16350 | return die; | |
16351 | } | |
16352 | ||
3e43a32a MS |
16353 | error (_("Dwarf Error: Cannot find signatured DIE at 0x%x referenced " |
16354 | "from DIE at 0x%x [in module %s]"), | |
b64f50a1 | 16355 | temp_die.offset.sect_off, src_die->offset.sect_off, objfile->name); |
348e048f DE |
16356 | } |
16357 | ||
16358 | /* Given an offset of a signatured type, return its signatured_type. */ | |
16359 | ||
16360 | static struct signatured_type * | |
8b70b953 TT |
16361 | lookup_signatured_type_at_offset (struct objfile *objfile, |
16362 | struct dwarf2_section_info *section, | |
b64f50a1 | 16363 | sect_offset offset) |
348e048f | 16364 | { |
b64f50a1 | 16365 | gdb_byte *info_ptr = section->buffer + offset.sect_off; |
348e048f DE |
16366 | unsigned int length, initial_length_size; |
16367 | unsigned int sig_offset; | |
52dc124a | 16368 | struct signatured_type find_entry, *sig_type; |
348e048f DE |
16369 | |
16370 | length = read_initial_length (objfile->obfd, info_ptr, &initial_length_size); | |
16371 | sig_offset = (initial_length_size | |
16372 | + 2 /*version*/ | |
16373 | + (initial_length_size == 4 ? 4 : 8) /*debug_abbrev_offset*/ | |
16374 | + 1 /*address_size*/); | |
16375 | find_entry.signature = bfd_get_64 (objfile->obfd, info_ptr + sig_offset); | |
52dc124a | 16376 | sig_type = htab_find (dwarf2_per_objfile->signatured_types, &find_entry); |
348e048f DE |
16377 | |
16378 | /* This is only used to lookup previously recorded types. | |
16379 | If we didn't find it, it's our bug. */ | |
52dc124a DE |
16380 | gdb_assert (sig_type != NULL); |
16381 | gdb_assert (offset.sect_off == sig_type->per_cu.offset.sect_off); | |
348e048f | 16382 | |
52dc124a | 16383 | return sig_type; |
348e048f DE |
16384 | } |
16385 | ||
e5fe5e75 | 16386 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
16387 | |
16388 | static void | |
e5fe5e75 | 16389 | load_full_type_unit (struct dwarf2_per_cu_data *per_cu) |
348e048f | 16390 | { |
52dc124a | 16391 | struct signatured_type *sig_type; |
348e048f | 16392 | |
f4dc4d17 DE |
16393 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
16394 | gdb_assert (! IS_TYPE_UNIT_GROUP (per_cu)); | |
16395 | ||
6721b2ec DE |
16396 | /* We have the per_cu, but we need the signatured_type. |
16397 | Fortunately this is an easy translation. */ | |
16398 | gdb_assert (per_cu->is_debug_types); | |
16399 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 16400 | |
6721b2ec | 16401 | gdb_assert (per_cu->cu == NULL); |
348e048f | 16402 | |
52dc124a | 16403 | read_signatured_type (sig_type); |
348e048f | 16404 | |
6721b2ec | 16405 | gdb_assert (per_cu->cu != NULL); |
348e048f DE |
16406 | } |
16407 | ||
dee91e82 DE |
16408 | /* die_reader_func for read_signatured_type. |
16409 | This is identical to load_full_comp_unit_reader, | |
16410 | but is kept separate for now. */ | |
348e048f DE |
16411 | |
16412 | static void | |
dee91e82 DE |
16413 | read_signatured_type_reader (const struct die_reader_specs *reader, |
16414 | gdb_byte *info_ptr, | |
16415 | struct die_info *comp_unit_die, | |
16416 | int has_children, | |
16417 | void *data) | |
348e048f | 16418 | { |
dee91e82 | 16419 | struct dwarf2_cu *cu = reader->cu; |
348e048f | 16420 | |
dee91e82 DE |
16421 | gdb_assert (cu->die_hash == NULL); |
16422 | cu->die_hash = | |
16423 | htab_create_alloc_ex (cu->header.length / 12, | |
16424 | die_hash, | |
16425 | die_eq, | |
16426 | NULL, | |
16427 | &cu->comp_unit_obstack, | |
16428 | hashtab_obstack_allocate, | |
16429 | dummy_obstack_deallocate); | |
348e048f | 16430 | |
dee91e82 DE |
16431 | if (has_children) |
16432 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
16433 | &info_ptr, comp_unit_die); | |
16434 | cu->dies = comp_unit_die; | |
16435 | /* comp_unit_die is not stored in die_hash, no need. */ | |
348e048f DE |
16436 | |
16437 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 16438 | all CUs needed for references have been loaded yet, and symbol |
348e048f | 16439 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
16440 | or we won't be able to build types correctly. |
16441 | Similarly, if we do not read the producer, we can not apply | |
16442 | producer-specific interpretation. */ | |
95554aad | 16443 | prepare_one_comp_unit (cu, cu->dies, language_minimal); |
dee91e82 | 16444 | } |
348e048f | 16445 | |
3019eac3 DE |
16446 | /* Read in a signatured type and build its CU and DIEs. |
16447 | If the type is a stub for the real type in a DWO file, | |
16448 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
16449 | |
16450 | static void | |
16451 | read_signatured_type (struct signatured_type *sig_type) | |
16452 | { | |
16453 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 16454 | |
3019eac3 | 16455 | gdb_assert (per_cu->is_debug_types); |
dee91e82 | 16456 | gdb_assert (per_cu->cu == NULL); |
348e048f | 16457 | |
f4dc4d17 DE |
16458 | init_cutu_and_read_dies (per_cu, NULL, 0, 1, |
16459 | read_signatured_type_reader, NULL); | |
c906108c SS |
16460 | } |
16461 | ||
c906108c SS |
16462 | /* Decode simple location descriptions. |
16463 | Given a pointer to a dwarf block that defines a location, compute | |
16464 | the location and return the value. | |
16465 | ||
4cecd739 DJ |
16466 | NOTE drow/2003-11-18: This function is called in two situations |
16467 | now: for the address of static or global variables (partial symbols | |
16468 | only) and for offsets into structures which are expected to be | |
16469 | (more or less) constant. The partial symbol case should go away, | |
16470 | and only the constant case should remain. That will let this | |
16471 | function complain more accurately. A few special modes are allowed | |
16472 | without complaint for global variables (for instance, global | |
16473 | register values and thread-local values). | |
c906108c SS |
16474 | |
16475 | A location description containing no operations indicates that the | |
4cecd739 | 16476 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
16477 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
16478 | callers will only want a very basic result and this can become a | |
21ae7a4d JK |
16479 | complaint. |
16480 | ||
16481 | Note that stack[0] is unused except as a default error return. */ | |
c906108c SS |
16482 | |
16483 | static CORE_ADDR | |
e7c27a73 | 16484 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 16485 | { |
e7c27a73 | 16486 | struct objfile *objfile = cu->objfile; |
21ae7a4d JK |
16487 | int i; |
16488 | int size = blk->size; | |
16489 | gdb_byte *data = blk->data; | |
16490 | CORE_ADDR stack[64]; | |
16491 | int stacki; | |
16492 | unsigned int bytes_read, unsnd; | |
16493 | gdb_byte op; | |
c906108c | 16494 | |
21ae7a4d JK |
16495 | i = 0; |
16496 | stacki = 0; | |
16497 | stack[stacki] = 0; | |
16498 | stack[++stacki] = 0; | |
16499 | ||
16500 | while (i < size) | |
16501 | { | |
16502 | op = data[i++]; | |
16503 | switch (op) | |
16504 | { | |
16505 | case DW_OP_lit0: | |
16506 | case DW_OP_lit1: | |
16507 | case DW_OP_lit2: | |
16508 | case DW_OP_lit3: | |
16509 | case DW_OP_lit4: | |
16510 | case DW_OP_lit5: | |
16511 | case DW_OP_lit6: | |
16512 | case DW_OP_lit7: | |
16513 | case DW_OP_lit8: | |
16514 | case DW_OP_lit9: | |
16515 | case DW_OP_lit10: | |
16516 | case DW_OP_lit11: | |
16517 | case DW_OP_lit12: | |
16518 | case DW_OP_lit13: | |
16519 | case DW_OP_lit14: | |
16520 | case DW_OP_lit15: | |
16521 | case DW_OP_lit16: | |
16522 | case DW_OP_lit17: | |
16523 | case DW_OP_lit18: | |
16524 | case DW_OP_lit19: | |
16525 | case DW_OP_lit20: | |
16526 | case DW_OP_lit21: | |
16527 | case DW_OP_lit22: | |
16528 | case DW_OP_lit23: | |
16529 | case DW_OP_lit24: | |
16530 | case DW_OP_lit25: | |
16531 | case DW_OP_lit26: | |
16532 | case DW_OP_lit27: | |
16533 | case DW_OP_lit28: | |
16534 | case DW_OP_lit29: | |
16535 | case DW_OP_lit30: | |
16536 | case DW_OP_lit31: | |
16537 | stack[++stacki] = op - DW_OP_lit0; | |
16538 | break; | |
f1bea926 | 16539 | |
21ae7a4d JK |
16540 | case DW_OP_reg0: |
16541 | case DW_OP_reg1: | |
16542 | case DW_OP_reg2: | |
16543 | case DW_OP_reg3: | |
16544 | case DW_OP_reg4: | |
16545 | case DW_OP_reg5: | |
16546 | case DW_OP_reg6: | |
16547 | case DW_OP_reg7: | |
16548 | case DW_OP_reg8: | |
16549 | case DW_OP_reg9: | |
16550 | case DW_OP_reg10: | |
16551 | case DW_OP_reg11: | |
16552 | case DW_OP_reg12: | |
16553 | case DW_OP_reg13: | |
16554 | case DW_OP_reg14: | |
16555 | case DW_OP_reg15: | |
16556 | case DW_OP_reg16: | |
16557 | case DW_OP_reg17: | |
16558 | case DW_OP_reg18: | |
16559 | case DW_OP_reg19: | |
16560 | case DW_OP_reg20: | |
16561 | case DW_OP_reg21: | |
16562 | case DW_OP_reg22: | |
16563 | case DW_OP_reg23: | |
16564 | case DW_OP_reg24: | |
16565 | case DW_OP_reg25: | |
16566 | case DW_OP_reg26: | |
16567 | case DW_OP_reg27: | |
16568 | case DW_OP_reg28: | |
16569 | case DW_OP_reg29: | |
16570 | case DW_OP_reg30: | |
16571 | case DW_OP_reg31: | |
16572 | stack[++stacki] = op - DW_OP_reg0; | |
16573 | if (i < size) | |
16574 | dwarf2_complex_location_expr_complaint (); | |
16575 | break; | |
c906108c | 16576 | |
21ae7a4d JK |
16577 | case DW_OP_regx: |
16578 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
16579 | i += bytes_read; | |
16580 | stack[++stacki] = unsnd; | |
16581 | if (i < size) | |
16582 | dwarf2_complex_location_expr_complaint (); | |
16583 | break; | |
c906108c | 16584 | |
21ae7a4d JK |
16585 | case DW_OP_addr: |
16586 | stack[++stacki] = read_address (objfile->obfd, &data[i], | |
16587 | cu, &bytes_read); | |
16588 | i += bytes_read; | |
16589 | break; | |
d53d4ac5 | 16590 | |
21ae7a4d JK |
16591 | case DW_OP_const1u: |
16592 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
16593 | i += 1; | |
16594 | break; | |
16595 | ||
16596 | case DW_OP_const1s: | |
16597 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
16598 | i += 1; | |
16599 | break; | |
16600 | ||
16601 | case DW_OP_const2u: | |
16602 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
16603 | i += 2; | |
16604 | break; | |
16605 | ||
16606 | case DW_OP_const2s: | |
16607 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
16608 | i += 2; | |
16609 | break; | |
d53d4ac5 | 16610 | |
21ae7a4d JK |
16611 | case DW_OP_const4u: |
16612 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
16613 | i += 4; | |
16614 | break; | |
16615 | ||
16616 | case DW_OP_const4s: | |
16617 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
16618 | i += 4; | |
16619 | break; | |
16620 | ||
585861ea JK |
16621 | case DW_OP_const8u: |
16622 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
16623 | i += 8; | |
16624 | break; | |
16625 | ||
21ae7a4d JK |
16626 | case DW_OP_constu: |
16627 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
16628 | &bytes_read); | |
16629 | i += bytes_read; | |
16630 | break; | |
16631 | ||
16632 | case DW_OP_consts: | |
16633 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
16634 | i += bytes_read; | |
16635 | break; | |
16636 | ||
16637 | case DW_OP_dup: | |
16638 | stack[stacki + 1] = stack[stacki]; | |
16639 | stacki++; | |
16640 | break; | |
16641 | ||
16642 | case DW_OP_plus: | |
16643 | stack[stacki - 1] += stack[stacki]; | |
16644 | stacki--; | |
16645 | break; | |
16646 | ||
16647 | case DW_OP_plus_uconst: | |
16648 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
16649 | &bytes_read); | |
16650 | i += bytes_read; | |
16651 | break; | |
16652 | ||
16653 | case DW_OP_minus: | |
16654 | stack[stacki - 1] -= stack[stacki]; | |
16655 | stacki--; | |
16656 | break; | |
16657 | ||
16658 | case DW_OP_deref: | |
16659 | /* If we're not the last op, then we definitely can't encode | |
16660 | this using GDB's address_class enum. This is valid for partial | |
16661 | global symbols, although the variable's address will be bogus | |
16662 | in the psymtab. */ | |
16663 | if (i < size) | |
16664 | dwarf2_complex_location_expr_complaint (); | |
16665 | break; | |
16666 | ||
16667 | case DW_OP_GNU_push_tls_address: | |
16668 | /* The top of the stack has the offset from the beginning | |
16669 | of the thread control block at which the variable is located. */ | |
16670 | /* Nothing should follow this operator, so the top of stack would | |
16671 | be returned. */ | |
16672 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
16673 | address will be bogus in the psymtab. Make it always at least |
16674 | non-zero to not look as a variable garbage collected by linker | |
16675 | which have DW_OP_addr 0. */ | |
21ae7a4d JK |
16676 | if (i < size) |
16677 | dwarf2_complex_location_expr_complaint (); | |
585861ea | 16678 | stack[stacki]++; |
21ae7a4d JK |
16679 | break; |
16680 | ||
16681 | case DW_OP_GNU_uninit: | |
16682 | break; | |
16683 | ||
3019eac3 | 16684 | case DW_OP_GNU_addr_index: |
49f6c839 | 16685 | case DW_OP_GNU_const_index: |
3019eac3 DE |
16686 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
16687 | &bytes_read); | |
16688 | i += bytes_read; | |
16689 | break; | |
16690 | ||
21ae7a4d JK |
16691 | default: |
16692 | { | |
f39c6ffd | 16693 | const char *name = get_DW_OP_name (op); |
21ae7a4d JK |
16694 | |
16695 | if (name) | |
16696 | complaint (&symfile_complaints, _("unsupported stack op: '%s'"), | |
16697 | name); | |
16698 | else | |
16699 | complaint (&symfile_complaints, _("unsupported stack op: '%02x'"), | |
16700 | op); | |
16701 | } | |
16702 | ||
16703 | return (stack[stacki]); | |
d53d4ac5 | 16704 | } |
3c6e0cb3 | 16705 | |
21ae7a4d JK |
16706 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
16707 | outside of the allocated space. Also enforce minimum>0. */ | |
16708 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
16709 | { | |
16710 | complaint (&symfile_complaints, | |
16711 | _("location description stack overflow")); | |
16712 | return 0; | |
16713 | } | |
16714 | ||
16715 | if (stacki <= 0) | |
16716 | { | |
16717 | complaint (&symfile_complaints, | |
16718 | _("location description stack underflow")); | |
16719 | return 0; | |
16720 | } | |
16721 | } | |
16722 | return (stack[stacki]); | |
c906108c SS |
16723 | } |
16724 | ||
16725 | /* memory allocation interface */ | |
16726 | ||
c906108c | 16727 | static struct dwarf_block * |
7b5a2f43 | 16728 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c SS |
16729 | { |
16730 | struct dwarf_block *blk; | |
16731 | ||
16732 | blk = (struct dwarf_block *) | |
7b5a2f43 | 16733 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct dwarf_block)); |
c906108c SS |
16734 | return (blk); |
16735 | } | |
16736 | ||
c906108c | 16737 | static struct die_info * |
b60c80d6 | 16738 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
16739 | { |
16740 | struct die_info *die; | |
b60c80d6 DJ |
16741 | size_t size = sizeof (struct die_info); |
16742 | ||
16743 | if (num_attrs > 1) | |
16744 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 16745 | |
b60c80d6 | 16746 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
16747 | memset (die, 0, sizeof (struct die_info)); |
16748 | return (die); | |
16749 | } | |
2e276125 JB |
16750 | |
16751 | \f | |
16752 | /* Macro support. */ | |
16753 | ||
2e276125 JB |
16754 | /* Return the full name of file number I in *LH's file name table. |
16755 | Use COMP_DIR as the name of the current directory of the | |
16756 | compilation. The result is allocated using xmalloc; the caller is | |
16757 | responsible for freeing it. */ | |
16758 | static char * | |
16759 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
16760 | { | |
6a83a1e6 EZ |
16761 | /* Is the file number a valid index into the line header's file name |
16762 | table? Remember that file numbers start with one, not zero. */ | |
16763 | if (1 <= file && file <= lh->num_file_names) | |
16764 | { | |
16765 | struct file_entry *fe = &lh->file_names[file - 1]; | |
6e70227d | 16766 | |
6a83a1e6 EZ |
16767 | if (IS_ABSOLUTE_PATH (fe->name)) |
16768 | return xstrdup (fe->name); | |
16769 | else | |
16770 | { | |
16771 | const char *dir; | |
16772 | int dir_len; | |
16773 | char *full_name; | |
16774 | ||
16775 | if (fe->dir_index) | |
16776 | dir = lh->include_dirs[fe->dir_index - 1]; | |
16777 | else | |
16778 | dir = comp_dir; | |
16779 | ||
16780 | if (dir) | |
16781 | { | |
16782 | dir_len = strlen (dir); | |
16783 | full_name = xmalloc (dir_len + 1 + strlen (fe->name) + 1); | |
16784 | strcpy (full_name, dir); | |
16785 | full_name[dir_len] = '/'; | |
16786 | strcpy (full_name + dir_len + 1, fe->name); | |
16787 | return full_name; | |
16788 | } | |
16789 | else | |
16790 | return xstrdup (fe->name); | |
16791 | } | |
16792 | } | |
2e276125 JB |
16793 | else |
16794 | { | |
6a83a1e6 EZ |
16795 | /* The compiler produced a bogus file number. We can at least |
16796 | record the macro definitions made in the file, even if we | |
16797 | won't be able to find the file by name. */ | |
16798 | char fake_name[80]; | |
9a619af0 | 16799 | |
6a83a1e6 | 16800 | sprintf (fake_name, "<bad macro file number %d>", file); |
2e276125 | 16801 | |
6e70227d | 16802 | complaint (&symfile_complaints, |
6a83a1e6 EZ |
16803 | _("bad file number in macro information (%d)"), |
16804 | file); | |
2e276125 | 16805 | |
6a83a1e6 | 16806 | return xstrdup (fake_name); |
2e276125 JB |
16807 | } |
16808 | } | |
16809 | ||
16810 | ||
16811 | static struct macro_source_file * | |
16812 | macro_start_file (int file, int line, | |
16813 | struct macro_source_file *current_file, | |
16814 | const char *comp_dir, | |
16815 | struct line_header *lh, struct objfile *objfile) | |
16816 | { | |
16817 | /* The full name of this source file. */ | |
16818 | char *full_name = file_full_name (file, lh, comp_dir); | |
16819 | ||
16820 | /* We don't create a macro table for this compilation unit | |
16821 | at all until we actually get a filename. */ | |
16822 | if (! pending_macros) | |
4a146b47 | 16823 | pending_macros = new_macro_table (&objfile->objfile_obstack, |
af5f3db6 | 16824 | objfile->macro_cache); |
2e276125 JB |
16825 | |
16826 | if (! current_file) | |
abc9d0dc TT |
16827 | { |
16828 | /* If we have no current file, then this must be the start_file | |
16829 | directive for the compilation unit's main source file. */ | |
16830 | current_file = macro_set_main (pending_macros, full_name); | |
16831 | macro_define_special (pending_macros); | |
16832 | } | |
2e276125 JB |
16833 | else |
16834 | current_file = macro_include (current_file, line, full_name); | |
16835 | ||
16836 | xfree (full_name); | |
6e70227d | 16837 | |
2e276125 JB |
16838 | return current_file; |
16839 | } | |
16840 | ||
16841 | ||
16842 | /* Copy the LEN characters at BUF to a xmalloc'ed block of memory, | |
16843 | followed by a null byte. */ | |
16844 | static char * | |
16845 | copy_string (const char *buf, int len) | |
16846 | { | |
16847 | char *s = xmalloc (len + 1); | |
9a619af0 | 16848 | |
2e276125 JB |
16849 | memcpy (s, buf, len); |
16850 | s[len] = '\0'; | |
2e276125 JB |
16851 | return s; |
16852 | } | |
16853 | ||
16854 | ||
16855 | static const char * | |
16856 | consume_improper_spaces (const char *p, const char *body) | |
16857 | { | |
16858 | if (*p == ' ') | |
16859 | { | |
4d3c2250 | 16860 | complaint (&symfile_complaints, |
3e43a32a MS |
16861 | _("macro definition contains spaces " |
16862 | "in formal argument list:\n`%s'"), | |
4d3c2250 | 16863 | body); |
2e276125 JB |
16864 | |
16865 | while (*p == ' ') | |
16866 | p++; | |
16867 | } | |
16868 | ||
16869 | return p; | |
16870 | } | |
16871 | ||
16872 | ||
16873 | static void | |
16874 | parse_macro_definition (struct macro_source_file *file, int line, | |
16875 | const char *body) | |
16876 | { | |
16877 | const char *p; | |
16878 | ||
16879 | /* The body string takes one of two forms. For object-like macro | |
16880 | definitions, it should be: | |
16881 | ||
16882 | <macro name> " " <definition> | |
16883 | ||
16884 | For function-like macro definitions, it should be: | |
16885 | ||
16886 | <macro name> "() " <definition> | |
16887 | or | |
16888 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
16889 | ||
16890 | Spaces may appear only where explicitly indicated, and in the | |
16891 | <definition>. | |
16892 | ||
16893 | The Dwarf 2 spec says that an object-like macro's name is always | |
16894 | followed by a space, but versions of GCC around March 2002 omit | |
6e70227d | 16895 | the space when the macro's definition is the empty string. |
2e276125 JB |
16896 | |
16897 | The Dwarf 2 spec says that there should be no spaces between the | |
16898 | formal arguments in a function-like macro's formal argument list, | |
16899 | but versions of GCC around March 2002 include spaces after the | |
16900 | commas. */ | |
16901 | ||
16902 | ||
16903 | /* Find the extent of the macro name. The macro name is terminated | |
16904 | by either a space or null character (for an object-like macro) or | |
16905 | an opening paren (for a function-like macro). */ | |
16906 | for (p = body; *p; p++) | |
16907 | if (*p == ' ' || *p == '(') | |
16908 | break; | |
16909 | ||
16910 | if (*p == ' ' || *p == '\0') | |
16911 | { | |
16912 | /* It's an object-like macro. */ | |
16913 | int name_len = p - body; | |
16914 | char *name = copy_string (body, name_len); | |
16915 | const char *replacement; | |
16916 | ||
16917 | if (*p == ' ') | |
16918 | replacement = body + name_len + 1; | |
16919 | else | |
16920 | { | |
4d3c2250 | 16921 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
16922 | replacement = body + name_len; |
16923 | } | |
6e70227d | 16924 | |
2e276125 JB |
16925 | macro_define_object (file, line, name, replacement); |
16926 | ||
16927 | xfree (name); | |
16928 | } | |
16929 | else if (*p == '(') | |
16930 | { | |
16931 | /* It's a function-like macro. */ | |
16932 | char *name = copy_string (body, p - body); | |
16933 | int argc = 0; | |
16934 | int argv_size = 1; | |
16935 | char **argv = xmalloc (argv_size * sizeof (*argv)); | |
16936 | ||
16937 | p++; | |
16938 | ||
16939 | p = consume_improper_spaces (p, body); | |
16940 | ||
16941 | /* Parse the formal argument list. */ | |
16942 | while (*p && *p != ')') | |
16943 | { | |
16944 | /* Find the extent of the current argument name. */ | |
16945 | const char *arg_start = p; | |
16946 | ||
16947 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
16948 | p++; | |
16949 | ||
16950 | if (! *p || p == arg_start) | |
4d3c2250 | 16951 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
16952 | else |
16953 | { | |
16954 | /* Make sure argv has room for the new argument. */ | |
16955 | if (argc >= argv_size) | |
16956 | { | |
16957 | argv_size *= 2; | |
16958 | argv = xrealloc (argv, argv_size * sizeof (*argv)); | |
16959 | } | |
16960 | ||
16961 | argv[argc++] = copy_string (arg_start, p - arg_start); | |
16962 | } | |
16963 | ||
16964 | p = consume_improper_spaces (p, body); | |
16965 | ||
16966 | /* Consume the comma, if present. */ | |
16967 | if (*p == ',') | |
16968 | { | |
16969 | p++; | |
16970 | ||
16971 | p = consume_improper_spaces (p, body); | |
16972 | } | |
16973 | } | |
16974 | ||
16975 | if (*p == ')') | |
16976 | { | |
16977 | p++; | |
16978 | ||
16979 | if (*p == ' ') | |
16980 | /* Perfectly formed definition, no complaints. */ | |
16981 | macro_define_function (file, line, name, | |
6e70227d | 16982 | argc, (const char **) argv, |
2e276125 JB |
16983 | p + 1); |
16984 | else if (*p == '\0') | |
16985 | { | |
16986 | /* Complain, but do define it. */ | |
4d3c2250 | 16987 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 | 16988 | macro_define_function (file, line, name, |
6e70227d | 16989 | argc, (const char **) argv, |
2e276125 JB |
16990 | p); |
16991 | } | |
16992 | else | |
16993 | /* Just complain. */ | |
4d3c2250 | 16994 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
16995 | } |
16996 | else | |
16997 | /* Just complain. */ | |
4d3c2250 | 16998 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
16999 | |
17000 | xfree (name); | |
17001 | { | |
17002 | int i; | |
17003 | ||
17004 | for (i = 0; i < argc; i++) | |
17005 | xfree (argv[i]); | |
17006 | } | |
17007 | xfree (argv); | |
17008 | } | |
17009 | else | |
4d3c2250 | 17010 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
17011 | } |
17012 | ||
cf2c3c16 TT |
17013 | /* Skip some bytes from BYTES according to the form given in FORM. |
17014 | Returns the new pointer. */ | |
2e276125 | 17015 | |
cf2c3c16 | 17016 | static gdb_byte * |
f664829e | 17017 | skip_form_bytes (bfd *abfd, gdb_byte *bytes, gdb_byte *buffer_end, |
cf2c3c16 TT |
17018 | enum dwarf_form form, |
17019 | unsigned int offset_size, | |
17020 | struct dwarf2_section_info *section) | |
2e276125 | 17021 | { |
cf2c3c16 | 17022 | unsigned int bytes_read; |
2e276125 | 17023 | |
cf2c3c16 | 17024 | switch (form) |
2e276125 | 17025 | { |
cf2c3c16 TT |
17026 | case DW_FORM_data1: |
17027 | case DW_FORM_flag: | |
17028 | ++bytes; | |
17029 | break; | |
17030 | ||
17031 | case DW_FORM_data2: | |
17032 | bytes += 2; | |
17033 | break; | |
17034 | ||
17035 | case DW_FORM_data4: | |
17036 | bytes += 4; | |
17037 | break; | |
17038 | ||
17039 | case DW_FORM_data8: | |
17040 | bytes += 8; | |
17041 | break; | |
17042 | ||
17043 | case DW_FORM_string: | |
17044 | read_direct_string (abfd, bytes, &bytes_read); | |
17045 | bytes += bytes_read; | |
17046 | break; | |
17047 | ||
17048 | case DW_FORM_sec_offset: | |
17049 | case DW_FORM_strp: | |
17050 | bytes += offset_size; | |
17051 | break; | |
17052 | ||
17053 | case DW_FORM_block: | |
17054 | bytes += read_unsigned_leb128 (abfd, bytes, &bytes_read); | |
17055 | bytes += bytes_read; | |
17056 | break; | |
17057 | ||
17058 | case DW_FORM_block1: | |
17059 | bytes += 1 + read_1_byte (abfd, bytes); | |
17060 | break; | |
17061 | case DW_FORM_block2: | |
17062 | bytes += 2 + read_2_bytes (abfd, bytes); | |
17063 | break; | |
17064 | case DW_FORM_block4: | |
17065 | bytes += 4 + read_4_bytes (abfd, bytes); | |
17066 | break; | |
17067 | ||
17068 | case DW_FORM_sdata: | |
17069 | case DW_FORM_udata: | |
3019eac3 DE |
17070 | case DW_FORM_GNU_addr_index: |
17071 | case DW_FORM_GNU_str_index: | |
f664829e DE |
17072 | bytes = (gdb_byte *) gdb_skip_leb128 (bytes, buffer_end); |
17073 | if (bytes == NULL) | |
17074 | { | |
17075 | dwarf2_section_buffer_overflow_complaint (section); | |
17076 | return NULL; | |
17077 | } | |
cf2c3c16 TT |
17078 | break; |
17079 | ||
17080 | default: | |
17081 | { | |
17082 | complain: | |
17083 | complaint (&symfile_complaints, | |
17084 | _("invalid form 0x%x in `%s'"), | |
17085 | form, | |
17086 | section->asection->name); | |
17087 | return NULL; | |
17088 | } | |
2e276125 JB |
17089 | } |
17090 | ||
cf2c3c16 TT |
17091 | return bytes; |
17092 | } | |
757a13d0 | 17093 | |
cf2c3c16 TT |
17094 | /* A helper for dwarf_decode_macros that handles skipping an unknown |
17095 | opcode. Returns an updated pointer to the macro data buffer; or, | |
17096 | on error, issues a complaint and returns NULL. */ | |
757a13d0 | 17097 | |
cf2c3c16 TT |
17098 | static gdb_byte * |
17099 | skip_unknown_opcode (unsigned int opcode, | |
17100 | gdb_byte **opcode_definitions, | |
f664829e | 17101 | gdb_byte *mac_ptr, gdb_byte *mac_end, |
cf2c3c16 TT |
17102 | bfd *abfd, |
17103 | unsigned int offset_size, | |
17104 | struct dwarf2_section_info *section) | |
17105 | { | |
17106 | unsigned int bytes_read, i; | |
17107 | unsigned long arg; | |
17108 | gdb_byte *defn; | |
2e276125 | 17109 | |
cf2c3c16 | 17110 | if (opcode_definitions[opcode] == NULL) |
2e276125 | 17111 | { |
cf2c3c16 TT |
17112 | complaint (&symfile_complaints, |
17113 | _("unrecognized DW_MACFINO opcode 0x%x"), | |
17114 | opcode); | |
17115 | return NULL; | |
17116 | } | |
2e276125 | 17117 | |
cf2c3c16 TT |
17118 | defn = opcode_definitions[opcode]; |
17119 | arg = read_unsigned_leb128 (abfd, defn, &bytes_read); | |
17120 | defn += bytes_read; | |
2e276125 | 17121 | |
cf2c3c16 TT |
17122 | for (i = 0; i < arg; ++i) |
17123 | { | |
f664829e DE |
17124 | mac_ptr = skip_form_bytes (abfd, mac_ptr, mac_end, defn[i], offset_size, |
17125 | section); | |
cf2c3c16 TT |
17126 | if (mac_ptr == NULL) |
17127 | { | |
17128 | /* skip_form_bytes already issued the complaint. */ | |
17129 | return NULL; | |
17130 | } | |
17131 | } | |
757a13d0 | 17132 | |
cf2c3c16 TT |
17133 | return mac_ptr; |
17134 | } | |
757a13d0 | 17135 | |
cf2c3c16 TT |
17136 | /* A helper function which parses the header of a macro section. |
17137 | If the macro section is the extended (for now called "GNU") type, | |
17138 | then this updates *OFFSET_SIZE. Returns a pointer to just after | |
17139 | the header, or issues a complaint and returns NULL on error. */ | |
757a13d0 | 17140 | |
cf2c3c16 TT |
17141 | static gdb_byte * |
17142 | dwarf_parse_macro_header (gdb_byte **opcode_definitions, | |
17143 | bfd *abfd, | |
17144 | gdb_byte *mac_ptr, | |
17145 | unsigned int *offset_size, | |
17146 | int section_is_gnu) | |
17147 | { | |
17148 | memset (opcode_definitions, 0, 256 * sizeof (gdb_byte *)); | |
757a13d0 | 17149 | |
cf2c3c16 TT |
17150 | if (section_is_gnu) |
17151 | { | |
17152 | unsigned int version, flags; | |
757a13d0 | 17153 | |
cf2c3c16 TT |
17154 | version = read_2_bytes (abfd, mac_ptr); |
17155 | if (version != 4) | |
17156 | { | |
17157 | complaint (&symfile_complaints, | |
17158 | _("unrecognized version `%d' in .debug_macro section"), | |
17159 | version); | |
17160 | return NULL; | |
17161 | } | |
17162 | mac_ptr += 2; | |
757a13d0 | 17163 | |
cf2c3c16 TT |
17164 | flags = read_1_byte (abfd, mac_ptr); |
17165 | ++mac_ptr; | |
17166 | *offset_size = (flags & 1) ? 8 : 4; | |
757a13d0 | 17167 | |
cf2c3c16 TT |
17168 | if ((flags & 2) != 0) |
17169 | /* We don't need the line table offset. */ | |
17170 | mac_ptr += *offset_size; | |
757a13d0 | 17171 | |
cf2c3c16 TT |
17172 | /* Vendor opcode descriptions. */ |
17173 | if ((flags & 4) != 0) | |
17174 | { | |
17175 | unsigned int i, count; | |
757a13d0 | 17176 | |
cf2c3c16 TT |
17177 | count = read_1_byte (abfd, mac_ptr); |
17178 | ++mac_ptr; | |
17179 | for (i = 0; i < count; ++i) | |
17180 | { | |
17181 | unsigned int opcode, bytes_read; | |
17182 | unsigned long arg; | |
17183 | ||
17184 | opcode = read_1_byte (abfd, mac_ptr); | |
17185 | ++mac_ptr; | |
17186 | opcode_definitions[opcode] = mac_ptr; | |
17187 | arg = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
17188 | mac_ptr += bytes_read; | |
17189 | mac_ptr += arg; | |
17190 | } | |
757a13d0 | 17191 | } |
cf2c3c16 | 17192 | } |
757a13d0 | 17193 | |
cf2c3c16 TT |
17194 | return mac_ptr; |
17195 | } | |
757a13d0 | 17196 | |
cf2c3c16 | 17197 | /* A helper for dwarf_decode_macros that handles the GNU extensions, |
8fc3fc34 | 17198 | including DW_MACRO_GNU_transparent_include. */ |
cf2c3c16 TT |
17199 | |
17200 | static void | |
17201 | dwarf_decode_macro_bytes (bfd *abfd, gdb_byte *mac_ptr, gdb_byte *mac_end, | |
17202 | struct macro_source_file *current_file, | |
17203 | struct line_header *lh, char *comp_dir, | |
17204 | struct dwarf2_section_info *section, | |
17205 | int section_is_gnu, | |
17206 | unsigned int offset_size, | |
8fc3fc34 TT |
17207 | struct objfile *objfile, |
17208 | htab_t include_hash) | |
cf2c3c16 TT |
17209 | { |
17210 | enum dwarf_macro_record_type macinfo_type; | |
17211 | int at_commandline; | |
17212 | gdb_byte *opcode_definitions[256]; | |
757a13d0 | 17213 | |
cf2c3c16 TT |
17214 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, |
17215 | &offset_size, section_is_gnu); | |
17216 | if (mac_ptr == NULL) | |
17217 | { | |
17218 | /* We already issued a complaint. */ | |
17219 | return; | |
17220 | } | |
757a13d0 JK |
17221 | |
17222 | /* Determines if GDB is still before first DW_MACINFO_start_file. If true | |
17223 | GDB is still reading the definitions from command line. First | |
17224 | DW_MACINFO_start_file will need to be ignored as it was already executed | |
17225 | to create CURRENT_FILE for the main source holding also the command line | |
17226 | definitions. On first met DW_MACINFO_start_file this flag is reset to | |
17227 | normally execute all the remaining DW_MACINFO_start_file macinfos. */ | |
17228 | ||
17229 | at_commandline = 1; | |
17230 | ||
17231 | do | |
17232 | { | |
17233 | /* Do we at least have room for a macinfo type byte? */ | |
17234 | if (mac_ptr >= mac_end) | |
17235 | { | |
f664829e | 17236 | dwarf2_section_buffer_overflow_complaint (section); |
757a13d0 JK |
17237 | break; |
17238 | } | |
17239 | ||
17240 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
17241 | mac_ptr++; | |
17242 | ||
cf2c3c16 TT |
17243 | /* Note that we rely on the fact that the corresponding GNU and |
17244 | DWARF constants are the same. */ | |
757a13d0 JK |
17245 | switch (macinfo_type) |
17246 | { | |
17247 | /* A zero macinfo type indicates the end of the macro | |
17248 | information. */ | |
17249 | case 0: | |
17250 | break; | |
2e276125 | 17251 | |
cf2c3c16 TT |
17252 | case DW_MACRO_GNU_define: |
17253 | case DW_MACRO_GNU_undef: | |
17254 | case DW_MACRO_GNU_define_indirect: | |
17255 | case DW_MACRO_GNU_undef_indirect: | |
2e276125 | 17256 | { |
891d2f0b | 17257 | unsigned int bytes_read; |
2e276125 JB |
17258 | int line; |
17259 | char *body; | |
cf2c3c16 | 17260 | int is_define; |
2e276125 | 17261 | |
cf2c3c16 TT |
17262 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
17263 | mac_ptr += bytes_read; | |
17264 | ||
17265 | if (macinfo_type == DW_MACRO_GNU_define | |
17266 | || macinfo_type == DW_MACRO_GNU_undef) | |
17267 | { | |
17268 | body = read_direct_string (abfd, mac_ptr, &bytes_read); | |
17269 | mac_ptr += bytes_read; | |
17270 | } | |
17271 | else | |
17272 | { | |
17273 | LONGEST str_offset; | |
17274 | ||
17275 | str_offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
17276 | mac_ptr += offset_size; | |
2e276125 | 17277 | |
cf2c3c16 TT |
17278 | body = read_indirect_string_at_offset (abfd, str_offset); |
17279 | } | |
17280 | ||
17281 | is_define = (macinfo_type == DW_MACRO_GNU_define | |
17282 | || macinfo_type == DW_MACRO_GNU_define_indirect); | |
2e276125 | 17283 | if (! current_file) |
757a13d0 JK |
17284 | { |
17285 | /* DWARF violation as no main source is present. */ | |
17286 | complaint (&symfile_complaints, | |
17287 | _("debug info with no main source gives macro %s " | |
17288 | "on line %d: %s"), | |
cf2c3c16 TT |
17289 | is_define ? _("definition") : _("undefinition"), |
17290 | line, body); | |
757a13d0 JK |
17291 | break; |
17292 | } | |
3e43a32a MS |
17293 | if ((line == 0 && !at_commandline) |
17294 | || (line != 0 && at_commandline)) | |
4d3c2250 | 17295 | complaint (&symfile_complaints, |
757a13d0 JK |
17296 | _("debug info gives %s macro %s with %s line %d: %s"), |
17297 | at_commandline ? _("command-line") : _("in-file"), | |
cf2c3c16 | 17298 | is_define ? _("definition") : _("undefinition"), |
757a13d0 JK |
17299 | line == 0 ? _("zero") : _("non-zero"), line, body); |
17300 | ||
cf2c3c16 | 17301 | if (is_define) |
757a13d0 | 17302 | parse_macro_definition (current_file, line, body); |
cf2c3c16 TT |
17303 | else |
17304 | { | |
17305 | gdb_assert (macinfo_type == DW_MACRO_GNU_undef | |
17306 | || macinfo_type == DW_MACRO_GNU_undef_indirect); | |
17307 | macro_undef (current_file, line, body); | |
17308 | } | |
2e276125 JB |
17309 | } |
17310 | break; | |
17311 | ||
cf2c3c16 | 17312 | case DW_MACRO_GNU_start_file: |
2e276125 | 17313 | { |
891d2f0b | 17314 | unsigned int bytes_read; |
2e276125 JB |
17315 | int line, file; |
17316 | ||
17317 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
17318 | mac_ptr += bytes_read; | |
17319 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
17320 | mac_ptr += bytes_read; | |
17321 | ||
3e43a32a MS |
17322 | if ((line == 0 && !at_commandline) |
17323 | || (line != 0 && at_commandline)) | |
757a13d0 JK |
17324 | complaint (&symfile_complaints, |
17325 | _("debug info gives source %d included " | |
17326 | "from %s at %s line %d"), | |
17327 | file, at_commandline ? _("command-line") : _("file"), | |
17328 | line == 0 ? _("zero") : _("non-zero"), line); | |
17329 | ||
17330 | if (at_commandline) | |
17331 | { | |
cf2c3c16 TT |
17332 | /* This DW_MACRO_GNU_start_file was executed in the |
17333 | pass one. */ | |
757a13d0 JK |
17334 | at_commandline = 0; |
17335 | } | |
17336 | else | |
17337 | current_file = macro_start_file (file, line, | |
17338 | current_file, comp_dir, | |
cf2c3c16 | 17339 | lh, objfile); |
2e276125 JB |
17340 | } |
17341 | break; | |
17342 | ||
cf2c3c16 | 17343 | case DW_MACRO_GNU_end_file: |
2e276125 | 17344 | if (! current_file) |
4d3c2250 | 17345 | complaint (&symfile_complaints, |
3e43a32a MS |
17346 | _("macro debug info has an unmatched " |
17347 | "`close_file' directive")); | |
2e276125 JB |
17348 | else |
17349 | { | |
17350 | current_file = current_file->included_by; | |
17351 | if (! current_file) | |
17352 | { | |
cf2c3c16 | 17353 | enum dwarf_macro_record_type next_type; |
2e276125 JB |
17354 | |
17355 | /* GCC circa March 2002 doesn't produce the zero | |
17356 | type byte marking the end of the compilation | |
17357 | unit. Complain if it's not there, but exit no | |
17358 | matter what. */ | |
17359 | ||
17360 | /* Do we at least have room for a macinfo type byte? */ | |
17361 | if (mac_ptr >= mac_end) | |
17362 | { | |
f664829e | 17363 | dwarf2_section_buffer_overflow_complaint (section); |
2e276125 JB |
17364 | return; |
17365 | } | |
17366 | ||
17367 | /* We don't increment mac_ptr here, so this is just | |
17368 | a look-ahead. */ | |
17369 | next_type = read_1_byte (abfd, mac_ptr); | |
17370 | if (next_type != 0) | |
4d3c2250 | 17371 | complaint (&symfile_complaints, |
3e43a32a MS |
17372 | _("no terminating 0-type entry for " |
17373 | "macros in `.debug_macinfo' section")); | |
2e276125 JB |
17374 | |
17375 | return; | |
17376 | } | |
17377 | } | |
17378 | break; | |
17379 | ||
cf2c3c16 TT |
17380 | case DW_MACRO_GNU_transparent_include: |
17381 | { | |
17382 | LONGEST offset; | |
8fc3fc34 | 17383 | void **slot; |
cf2c3c16 TT |
17384 | |
17385 | offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
17386 | mac_ptr += offset_size; | |
17387 | ||
8fc3fc34 TT |
17388 | slot = htab_find_slot (include_hash, mac_ptr, INSERT); |
17389 | if (*slot != NULL) | |
17390 | { | |
17391 | /* This has actually happened; see | |
17392 | http://sourceware.org/bugzilla/show_bug.cgi?id=13568. */ | |
17393 | complaint (&symfile_complaints, | |
17394 | _("recursive DW_MACRO_GNU_transparent_include in " | |
17395 | ".debug_macro section")); | |
17396 | } | |
17397 | else | |
17398 | { | |
17399 | *slot = mac_ptr; | |
17400 | ||
17401 | dwarf_decode_macro_bytes (abfd, | |
17402 | section->buffer + offset, | |
17403 | mac_end, current_file, | |
17404 | lh, comp_dir, | |
17405 | section, section_is_gnu, | |
17406 | offset_size, objfile, include_hash); | |
17407 | ||
17408 | htab_remove_elt (include_hash, mac_ptr); | |
17409 | } | |
cf2c3c16 TT |
17410 | } |
17411 | break; | |
17412 | ||
2e276125 | 17413 | case DW_MACINFO_vendor_ext: |
cf2c3c16 TT |
17414 | if (!section_is_gnu) |
17415 | { | |
17416 | unsigned int bytes_read; | |
17417 | int constant; | |
2e276125 | 17418 | |
cf2c3c16 TT |
17419 | constant = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
17420 | mac_ptr += bytes_read; | |
17421 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
17422 | mac_ptr += bytes_read; | |
2e276125 | 17423 | |
cf2c3c16 TT |
17424 | /* We don't recognize any vendor extensions. */ |
17425 | break; | |
17426 | } | |
17427 | /* FALLTHROUGH */ | |
17428 | ||
17429 | default: | |
17430 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 17431 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
17432 | section); |
17433 | if (mac_ptr == NULL) | |
17434 | return; | |
17435 | break; | |
2e276125 | 17436 | } |
757a13d0 | 17437 | } while (macinfo_type != 0); |
2e276125 | 17438 | } |
8e19ed76 | 17439 | |
cf2c3c16 | 17440 | static void |
09262596 DE |
17441 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, |
17442 | char *comp_dir, int section_is_gnu) | |
cf2c3c16 | 17443 | { |
bb5ed363 | 17444 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
09262596 DE |
17445 | struct line_header *lh = cu->line_header; |
17446 | bfd *abfd; | |
cf2c3c16 TT |
17447 | gdb_byte *mac_ptr, *mac_end; |
17448 | struct macro_source_file *current_file = 0; | |
17449 | enum dwarf_macro_record_type macinfo_type; | |
17450 | unsigned int offset_size = cu->header.offset_size; | |
17451 | gdb_byte *opcode_definitions[256]; | |
8fc3fc34 TT |
17452 | struct cleanup *cleanup; |
17453 | htab_t include_hash; | |
17454 | void **slot; | |
09262596 DE |
17455 | struct dwarf2_section_info *section; |
17456 | const char *section_name; | |
17457 | ||
17458 | if (cu->dwo_unit != NULL) | |
17459 | { | |
17460 | if (section_is_gnu) | |
17461 | { | |
17462 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
17463 | section_name = ".debug_macro.dwo"; | |
17464 | } | |
17465 | else | |
17466 | { | |
17467 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
17468 | section_name = ".debug_macinfo.dwo"; | |
17469 | } | |
17470 | } | |
17471 | else | |
17472 | { | |
17473 | if (section_is_gnu) | |
17474 | { | |
17475 | section = &dwarf2_per_objfile->macro; | |
17476 | section_name = ".debug_macro"; | |
17477 | } | |
17478 | else | |
17479 | { | |
17480 | section = &dwarf2_per_objfile->macinfo; | |
17481 | section_name = ".debug_macinfo"; | |
17482 | } | |
17483 | } | |
cf2c3c16 | 17484 | |
bb5ed363 | 17485 | dwarf2_read_section (objfile, section); |
cf2c3c16 TT |
17486 | if (section->buffer == NULL) |
17487 | { | |
fceca515 | 17488 | complaint (&symfile_complaints, _("missing %s section"), section_name); |
cf2c3c16 TT |
17489 | return; |
17490 | } | |
09262596 | 17491 | abfd = section->asection->owner; |
cf2c3c16 TT |
17492 | |
17493 | /* First pass: Find the name of the base filename. | |
17494 | This filename is needed in order to process all macros whose definition | |
17495 | (or undefinition) comes from the command line. These macros are defined | |
17496 | before the first DW_MACINFO_start_file entry, and yet still need to be | |
17497 | associated to the base file. | |
17498 | ||
17499 | To determine the base file name, we scan the macro definitions until we | |
17500 | reach the first DW_MACINFO_start_file entry. We then initialize | |
17501 | CURRENT_FILE accordingly so that any macro definition found before the | |
17502 | first DW_MACINFO_start_file can still be associated to the base file. */ | |
17503 | ||
17504 | mac_ptr = section->buffer + offset; | |
17505 | mac_end = section->buffer + section->size; | |
17506 | ||
17507 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, | |
17508 | &offset_size, section_is_gnu); | |
17509 | if (mac_ptr == NULL) | |
17510 | { | |
17511 | /* We already issued a complaint. */ | |
17512 | return; | |
17513 | } | |
17514 | ||
17515 | do | |
17516 | { | |
17517 | /* Do we at least have room for a macinfo type byte? */ | |
17518 | if (mac_ptr >= mac_end) | |
17519 | { | |
17520 | /* Complaint is printed during the second pass as GDB will probably | |
17521 | stop the first pass earlier upon finding | |
17522 | DW_MACINFO_start_file. */ | |
17523 | break; | |
17524 | } | |
17525 | ||
17526 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
17527 | mac_ptr++; | |
17528 | ||
17529 | /* Note that we rely on the fact that the corresponding GNU and | |
17530 | DWARF constants are the same. */ | |
17531 | switch (macinfo_type) | |
17532 | { | |
17533 | /* A zero macinfo type indicates the end of the macro | |
17534 | information. */ | |
17535 | case 0: | |
17536 | break; | |
17537 | ||
17538 | case DW_MACRO_GNU_define: | |
17539 | case DW_MACRO_GNU_undef: | |
17540 | /* Only skip the data by MAC_PTR. */ | |
17541 | { | |
17542 | unsigned int bytes_read; | |
17543 | ||
17544 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
17545 | mac_ptr += bytes_read; | |
17546 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
17547 | mac_ptr += bytes_read; | |
17548 | } | |
17549 | break; | |
17550 | ||
17551 | case DW_MACRO_GNU_start_file: | |
17552 | { | |
17553 | unsigned int bytes_read; | |
17554 | int line, file; | |
17555 | ||
17556 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
17557 | mac_ptr += bytes_read; | |
17558 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
17559 | mac_ptr += bytes_read; | |
17560 | ||
17561 | current_file = macro_start_file (file, line, current_file, | |
bb5ed363 | 17562 | comp_dir, lh, objfile); |
cf2c3c16 TT |
17563 | } |
17564 | break; | |
17565 | ||
17566 | case DW_MACRO_GNU_end_file: | |
17567 | /* No data to skip by MAC_PTR. */ | |
17568 | break; | |
17569 | ||
17570 | case DW_MACRO_GNU_define_indirect: | |
17571 | case DW_MACRO_GNU_undef_indirect: | |
17572 | { | |
17573 | unsigned int bytes_read; | |
17574 | ||
17575 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
17576 | mac_ptr += bytes_read; | |
17577 | mac_ptr += offset_size; | |
17578 | } | |
17579 | break; | |
17580 | ||
17581 | case DW_MACRO_GNU_transparent_include: | |
17582 | /* Note that, according to the spec, a transparent include | |
17583 | chain cannot call DW_MACRO_GNU_start_file. So, we can just | |
17584 | skip this opcode. */ | |
17585 | mac_ptr += offset_size; | |
17586 | break; | |
17587 | ||
17588 | case DW_MACINFO_vendor_ext: | |
17589 | /* Only skip the data by MAC_PTR. */ | |
17590 | if (!section_is_gnu) | |
17591 | { | |
17592 | unsigned int bytes_read; | |
17593 | ||
17594 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
17595 | mac_ptr += bytes_read; | |
17596 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
17597 | mac_ptr += bytes_read; | |
17598 | } | |
17599 | /* FALLTHROUGH */ | |
17600 | ||
17601 | default: | |
17602 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 17603 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
17604 | section); |
17605 | if (mac_ptr == NULL) | |
17606 | return; | |
17607 | break; | |
17608 | } | |
17609 | } while (macinfo_type != 0 && current_file == NULL); | |
17610 | ||
17611 | /* Second pass: Process all entries. | |
17612 | ||
17613 | Use the AT_COMMAND_LINE flag to determine whether we are still processing | |
17614 | command-line macro definitions/undefinitions. This flag is unset when we | |
17615 | reach the first DW_MACINFO_start_file entry. */ | |
17616 | ||
8fc3fc34 TT |
17617 | include_hash = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
17618 | NULL, xcalloc, xfree); | |
17619 | cleanup = make_cleanup_htab_delete (include_hash); | |
17620 | mac_ptr = section->buffer + offset; | |
17621 | slot = htab_find_slot (include_hash, mac_ptr, INSERT); | |
17622 | *slot = mac_ptr; | |
17623 | dwarf_decode_macro_bytes (abfd, mac_ptr, mac_end, | |
cf2c3c16 | 17624 | current_file, lh, comp_dir, section, section_is_gnu, |
8fc3fc34 TT |
17625 | offset_size, objfile, include_hash); |
17626 | do_cleanups (cleanup); | |
cf2c3c16 TT |
17627 | } |
17628 | ||
8e19ed76 | 17629 | /* Check if the attribute's form is a DW_FORM_block* |
0963b4bd | 17630 | if so return true else false. */ |
380bca97 | 17631 | |
8e19ed76 PS |
17632 | static int |
17633 | attr_form_is_block (struct attribute *attr) | |
17634 | { | |
17635 | return (attr == NULL ? 0 : | |
17636 | attr->form == DW_FORM_block1 | |
17637 | || attr->form == DW_FORM_block2 | |
17638 | || attr->form == DW_FORM_block4 | |
2dc7f7b3 TT |
17639 | || attr->form == DW_FORM_block |
17640 | || attr->form == DW_FORM_exprloc); | |
8e19ed76 | 17641 | } |
4c2df51b | 17642 | |
c6a0999f JB |
17643 | /* Return non-zero if ATTR's value is a section offset --- classes |
17644 | lineptr, loclistptr, macptr or rangelistptr --- or zero, otherwise. | |
17645 | You may use DW_UNSND (attr) to retrieve such offsets. | |
17646 | ||
17647 | Section 7.5.4, "Attribute Encodings", explains that no attribute | |
17648 | may have a value that belongs to more than one of these classes; it | |
17649 | would be ambiguous if we did, because we use the same forms for all | |
17650 | of them. */ | |
380bca97 | 17651 | |
3690dd37 JB |
17652 | static int |
17653 | attr_form_is_section_offset (struct attribute *attr) | |
17654 | { | |
17655 | return (attr->form == DW_FORM_data4 | |
2dc7f7b3 TT |
17656 | || attr->form == DW_FORM_data8 |
17657 | || attr->form == DW_FORM_sec_offset); | |
3690dd37 JB |
17658 | } |
17659 | ||
3690dd37 JB |
17660 | /* Return non-zero if ATTR's value falls in the 'constant' class, or |
17661 | zero otherwise. When this function returns true, you can apply | |
17662 | dwarf2_get_attr_constant_value to it. | |
17663 | ||
17664 | However, note that for some attributes you must check | |
17665 | attr_form_is_section_offset before using this test. DW_FORM_data4 | |
17666 | and DW_FORM_data8 are members of both the constant class, and of | |
17667 | the classes that contain offsets into other debug sections | |
17668 | (lineptr, loclistptr, macptr or rangelistptr). The DWARF spec says | |
17669 | that, if an attribute's can be either a constant or one of the | |
17670 | section offset classes, DW_FORM_data4 and DW_FORM_data8 should be | |
17671 | taken as section offsets, not constants. */ | |
380bca97 | 17672 | |
3690dd37 JB |
17673 | static int |
17674 | attr_form_is_constant (struct attribute *attr) | |
17675 | { | |
17676 | switch (attr->form) | |
17677 | { | |
17678 | case DW_FORM_sdata: | |
17679 | case DW_FORM_udata: | |
17680 | case DW_FORM_data1: | |
17681 | case DW_FORM_data2: | |
17682 | case DW_FORM_data4: | |
17683 | case DW_FORM_data8: | |
17684 | return 1; | |
17685 | default: | |
17686 | return 0; | |
17687 | } | |
17688 | } | |
17689 | ||
3019eac3 DE |
17690 | /* Return the .debug_loc section to use for CU. |
17691 | For DWO files use .debug_loc.dwo. */ | |
17692 | ||
17693 | static struct dwarf2_section_info * | |
17694 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
17695 | { | |
17696 | if (cu->dwo_unit) | |
17697 | return &cu->dwo_unit->dwo_file->sections.loc; | |
17698 | return &dwarf2_per_objfile->loc; | |
17699 | } | |
17700 | ||
8cf6f0b1 TT |
17701 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
17702 | ||
17703 | static void | |
17704 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
17705 | struct dwarf2_loclist_baton *baton, | |
17706 | struct attribute *attr) | |
17707 | { | |
3019eac3 DE |
17708 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
17709 | ||
17710 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
8cf6f0b1 TT |
17711 | |
17712 | baton->per_cu = cu->per_cu; | |
17713 | gdb_assert (baton->per_cu); | |
17714 | /* We don't know how long the location list is, but make sure we | |
17715 | don't run off the edge of the section. */ | |
3019eac3 DE |
17716 | baton->size = section->size - DW_UNSND (attr); |
17717 | baton->data = section->buffer + DW_UNSND (attr); | |
8cf6f0b1 | 17718 | baton->base_address = cu->base_address; |
f664829e | 17719 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
17720 | } |
17721 | ||
4c2df51b DJ |
17722 | static void |
17723 | dwarf2_symbol_mark_computed (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 17724 | struct dwarf2_cu *cu) |
4c2df51b | 17725 | { |
bb5ed363 | 17726 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 | 17727 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 17728 | |
3690dd37 | 17729 | if (attr_form_is_section_offset (attr) |
3019eac3 | 17730 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
17731 | the section. If so, fall through to the complaint in the |
17732 | other branch. */ | |
3019eac3 | 17733 | && DW_UNSND (attr) < dwarf2_section_size (objfile, section)) |
4c2df51b | 17734 | { |
0d53c4c4 | 17735 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 17736 | |
bb5ed363 | 17737 | baton = obstack_alloc (&objfile->objfile_obstack, |
0d53c4c4 | 17738 | sizeof (struct dwarf2_loclist_baton)); |
4c2df51b | 17739 | |
8cf6f0b1 | 17740 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 17741 | |
d00adf39 | 17742 | if (cu->base_known == 0) |
0d53c4c4 | 17743 | complaint (&symfile_complaints, |
3e43a32a MS |
17744 | _("Location list used without " |
17745 | "specifying the CU base address.")); | |
4c2df51b | 17746 | |
768a979c | 17747 | SYMBOL_COMPUTED_OPS (sym) = &dwarf2_loclist_funcs; |
0d53c4c4 DJ |
17748 | SYMBOL_LOCATION_BATON (sym) = baton; |
17749 | } | |
17750 | else | |
17751 | { | |
17752 | struct dwarf2_locexpr_baton *baton; | |
17753 | ||
bb5ed363 | 17754 | baton = obstack_alloc (&objfile->objfile_obstack, |
0d53c4c4 | 17755 | sizeof (struct dwarf2_locexpr_baton)); |
ae0d2f24 UW |
17756 | baton->per_cu = cu->per_cu; |
17757 | gdb_assert (baton->per_cu); | |
0d53c4c4 DJ |
17758 | |
17759 | if (attr_form_is_block (attr)) | |
17760 | { | |
17761 | /* Note that we're just copying the block's data pointer | |
17762 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
17763 | info_buffer for SYM's objfile; right now we never release |
17764 | that buffer, but when we do clean up properly this may | |
17765 | need to change. */ | |
0d53c4c4 DJ |
17766 | baton->size = DW_BLOCK (attr)->size; |
17767 | baton->data = DW_BLOCK (attr)->data; | |
17768 | } | |
17769 | else | |
17770 | { | |
17771 | dwarf2_invalid_attrib_class_complaint ("location description", | |
17772 | SYMBOL_NATURAL_NAME (sym)); | |
17773 | baton->size = 0; | |
0d53c4c4 | 17774 | } |
6e70227d | 17775 | |
768a979c | 17776 | SYMBOL_COMPUTED_OPS (sym) = &dwarf2_locexpr_funcs; |
0d53c4c4 DJ |
17777 | SYMBOL_LOCATION_BATON (sym) = baton; |
17778 | } | |
4c2df51b | 17779 | } |
6502dd73 | 17780 | |
9aa1f1e3 TT |
17781 | /* Return the OBJFILE associated with the compilation unit CU. If CU |
17782 | came from a separate debuginfo file, then the master objfile is | |
17783 | returned. */ | |
ae0d2f24 UW |
17784 | |
17785 | struct objfile * | |
17786 | dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *per_cu) | |
17787 | { | |
9291a0cd | 17788 | struct objfile *objfile = per_cu->objfile; |
ae0d2f24 UW |
17789 | |
17790 | /* Return the master objfile, so that we can report and look up the | |
17791 | correct file containing this variable. */ | |
17792 | if (objfile->separate_debug_objfile_backlink) | |
17793 | objfile = objfile->separate_debug_objfile_backlink; | |
17794 | ||
17795 | return objfile; | |
17796 | } | |
17797 | ||
96408a79 SA |
17798 | /* Return comp_unit_head for PER_CU, either already available in PER_CU->CU |
17799 | (CU_HEADERP is unused in such case) or prepare a temporary copy at | |
17800 | CU_HEADERP first. */ | |
17801 | ||
17802 | static const struct comp_unit_head * | |
17803 | per_cu_header_read_in (struct comp_unit_head *cu_headerp, | |
17804 | struct dwarf2_per_cu_data *per_cu) | |
17805 | { | |
96408a79 SA |
17806 | gdb_byte *info_ptr; |
17807 | ||
17808 | if (per_cu->cu) | |
17809 | return &per_cu->cu->header; | |
17810 | ||
0bc3a05c | 17811 | info_ptr = per_cu->info_or_types_section->buffer + per_cu->offset.sect_off; |
96408a79 SA |
17812 | |
17813 | memset (cu_headerp, 0, sizeof (*cu_headerp)); | |
0bc3a05c | 17814 | read_comp_unit_head (cu_headerp, info_ptr, per_cu->objfile->obfd); |
96408a79 SA |
17815 | |
17816 | return cu_headerp; | |
17817 | } | |
17818 | ||
ae0d2f24 UW |
17819 | /* Return the address size given in the compilation unit header for CU. */ |
17820 | ||
98714339 | 17821 | int |
ae0d2f24 UW |
17822 | dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *per_cu) |
17823 | { | |
96408a79 SA |
17824 | struct comp_unit_head cu_header_local; |
17825 | const struct comp_unit_head *cu_headerp; | |
c471e790 | 17826 | |
96408a79 SA |
17827 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
17828 | ||
17829 | return cu_headerp->addr_size; | |
ae0d2f24 UW |
17830 | } |
17831 | ||
9eae7c52 TT |
17832 | /* Return the offset size given in the compilation unit header for CU. */ |
17833 | ||
17834 | int | |
17835 | dwarf2_per_cu_offset_size (struct dwarf2_per_cu_data *per_cu) | |
17836 | { | |
96408a79 SA |
17837 | struct comp_unit_head cu_header_local; |
17838 | const struct comp_unit_head *cu_headerp; | |
9c6c53f7 | 17839 | |
96408a79 SA |
17840 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
17841 | ||
17842 | return cu_headerp->offset_size; | |
17843 | } | |
17844 | ||
17845 | /* See its dwarf2loc.h declaration. */ | |
17846 | ||
17847 | int | |
17848 | dwarf2_per_cu_ref_addr_size (struct dwarf2_per_cu_data *per_cu) | |
17849 | { | |
17850 | struct comp_unit_head cu_header_local; | |
17851 | const struct comp_unit_head *cu_headerp; | |
17852 | ||
17853 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); | |
17854 | ||
17855 | if (cu_headerp->version == 2) | |
17856 | return cu_headerp->addr_size; | |
17857 | else | |
17858 | return cu_headerp->offset_size; | |
181cebd4 JK |
17859 | } |
17860 | ||
9aa1f1e3 TT |
17861 | /* Return the text offset of the CU. The returned offset comes from |
17862 | this CU's objfile. If this objfile came from a separate debuginfo | |
17863 | file, then the offset may be different from the corresponding | |
17864 | offset in the parent objfile. */ | |
17865 | ||
17866 | CORE_ADDR | |
17867 | dwarf2_per_cu_text_offset (struct dwarf2_per_cu_data *per_cu) | |
17868 | { | |
bb3fa9d0 | 17869 | struct objfile *objfile = per_cu->objfile; |
9aa1f1e3 TT |
17870 | |
17871 | return ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
17872 | } | |
17873 | ||
348e048f DE |
17874 | /* Locate the .debug_info compilation unit from CU's objfile which contains |
17875 | the DIE at OFFSET. Raises an error on failure. */ | |
ae038cb0 DJ |
17876 | |
17877 | static struct dwarf2_per_cu_data * | |
b64f50a1 | 17878 | dwarf2_find_containing_comp_unit (sect_offset offset, |
ae038cb0 DJ |
17879 | struct objfile *objfile) |
17880 | { | |
17881 | struct dwarf2_per_cu_data *this_cu; | |
17882 | int low, high; | |
17883 | ||
ae038cb0 DJ |
17884 | low = 0; |
17885 | high = dwarf2_per_objfile->n_comp_units - 1; | |
17886 | while (high > low) | |
17887 | { | |
17888 | int mid = low + (high - low) / 2; | |
9a619af0 | 17889 | |
b64f50a1 JK |
17890 | if (dwarf2_per_objfile->all_comp_units[mid]->offset.sect_off |
17891 | >= offset.sect_off) | |
ae038cb0 DJ |
17892 | high = mid; |
17893 | else | |
17894 | low = mid + 1; | |
17895 | } | |
17896 | gdb_assert (low == high); | |
b64f50a1 JK |
17897 | if (dwarf2_per_objfile->all_comp_units[low]->offset.sect_off |
17898 | > offset.sect_off) | |
ae038cb0 | 17899 | { |
10b3939b | 17900 | if (low == 0) |
8a3fe4f8 AC |
17901 | error (_("Dwarf Error: could not find partial DIE containing " |
17902 | "offset 0x%lx [in module %s]"), | |
b64f50a1 | 17903 | (long) offset.sect_off, bfd_get_filename (objfile->obfd)); |
10b3939b | 17904 | |
b64f50a1 JK |
17905 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->offset.sect_off |
17906 | <= offset.sect_off); | |
ae038cb0 DJ |
17907 | return dwarf2_per_objfile->all_comp_units[low-1]; |
17908 | } | |
17909 | else | |
17910 | { | |
17911 | this_cu = dwarf2_per_objfile->all_comp_units[low]; | |
17912 | if (low == dwarf2_per_objfile->n_comp_units - 1 | |
b64f50a1 JK |
17913 | && offset.sect_off >= this_cu->offset.sect_off + this_cu->length) |
17914 | error (_("invalid dwarf2 offset %u"), offset.sect_off); | |
17915 | gdb_assert (offset.sect_off < this_cu->offset.sect_off + this_cu->length); | |
ae038cb0 DJ |
17916 | return this_cu; |
17917 | } | |
17918 | } | |
17919 | ||
23745b47 | 17920 | /* Initialize dwarf2_cu CU, owned by PER_CU. */ |
93311388 | 17921 | |
9816fde3 | 17922 | static void |
23745b47 | 17923 | init_one_comp_unit (struct dwarf2_cu *cu, struct dwarf2_per_cu_data *per_cu) |
93311388 | 17924 | { |
9816fde3 | 17925 | memset (cu, 0, sizeof (*cu)); |
23745b47 DE |
17926 | per_cu->cu = cu; |
17927 | cu->per_cu = per_cu; | |
17928 | cu->objfile = per_cu->objfile; | |
93311388 | 17929 | obstack_init (&cu->comp_unit_obstack); |
9816fde3 JK |
17930 | } |
17931 | ||
17932 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
17933 | ||
17934 | static void | |
95554aad TT |
17935 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
17936 | enum language pretend_language) | |
9816fde3 JK |
17937 | { |
17938 | struct attribute *attr; | |
17939 | ||
17940 | /* Set the language we're debugging. */ | |
17941 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
17942 | if (attr) | |
17943 | set_cu_language (DW_UNSND (attr), cu); | |
17944 | else | |
9cded63f | 17945 | { |
95554aad | 17946 | cu->language = pretend_language; |
9cded63f TT |
17947 | cu->language_defn = language_def (cu->language); |
17948 | } | |
dee91e82 DE |
17949 | |
17950 | attr = dwarf2_attr (comp_unit_die, DW_AT_producer, cu); | |
17951 | if (attr) | |
17952 | cu->producer = DW_STRING (attr); | |
93311388 DE |
17953 | } |
17954 | ||
ae038cb0 DJ |
17955 | /* Release one cached compilation unit, CU. We unlink it from the tree |
17956 | of compilation units, but we don't remove it from the read_in_chain; | |
93311388 DE |
17957 | the caller is responsible for that. |
17958 | NOTE: DATA is a void * because this function is also used as a | |
17959 | cleanup routine. */ | |
ae038cb0 DJ |
17960 | |
17961 | static void | |
68dc6402 | 17962 | free_heap_comp_unit (void *data) |
ae038cb0 DJ |
17963 | { |
17964 | struct dwarf2_cu *cu = data; | |
17965 | ||
23745b47 DE |
17966 | gdb_assert (cu->per_cu != NULL); |
17967 | cu->per_cu->cu = NULL; | |
ae038cb0 DJ |
17968 | cu->per_cu = NULL; |
17969 | ||
17970 | obstack_free (&cu->comp_unit_obstack, NULL); | |
17971 | ||
17972 | xfree (cu); | |
17973 | } | |
17974 | ||
72bf9492 | 17975 | /* This cleanup function is passed the address of a dwarf2_cu on the stack |
ae038cb0 | 17976 | when we're finished with it. We can't free the pointer itself, but be |
dee91e82 | 17977 | sure to unlink it from the cache. Also release any associated storage. */ |
72bf9492 DJ |
17978 | |
17979 | static void | |
17980 | free_stack_comp_unit (void *data) | |
17981 | { | |
17982 | struct dwarf2_cu *cu = data; | |
17983 | ||
23745b47 DE |
17984 | gdb_assert (cu->per_cu != NULL); |
17985 | cu->per_cu->cu = NULL; | |
17986 | cu->per_cu = NULL; | |
17987 | ||
72bf9492 DJ |
17988 | obstack_free (&cu->comp_unit_obstack, NULL); |
17989 | cu->partial_dies = NULL; | |
ae038cb0 DJ |
17990 | } |
17991 | ||
17992 | /* Free all cached compilation units. */ | |
17993 | ||
17994 | static void | |
17995 | free_cached_comp_units (void *data) | |
17996 | { | |
17997 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
17998 | ||
17999 | per_cu = dwarf2_per_objfile->read_in_chain; | |
18000 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
18001 | while (per_cu != NULL) | |
18002 | { | |
18003 | struct dwarf2_per_cu_data *next_cu; | |
18004 | ||
18005 | next_cu = per_cu->cu->read_in_chain; | |
18006 | ||
68dc6402 | 18007 | free_heap_comp_unit (per_cu->cu); |
ae038cb0 DJ |
18008 | *last_chain = next_cu; |
18009 | ||
18010 | per_cu = next_cu; | |
18011 | } | |
18012 | } | |
18013 | ||
18014 | /* Increase the age counter on each cached compilation unit, and free | |
18015 | any that are too old. */ | |
18016 | ||
18017 | static void | |
18018 | age_cached_comp_units (void) | |
18019 | { | |
18020 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
18021 | ||
18022 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
18023 | per_cu = dwarf2_per_objfile->read_in_chain; | |
18024 | while (per_cu != NULL) | |
18025 | { | |
18026 | per_cu->cu->last_used ++; | |
18027 | if (per_cu->cu->last_used <= dwarf2_max_cache_age) | |
18028 | dwarf2_mark (per_cu->cu); | |
18029 | per_cu = per_cu->cu->read_in_chain; | |
18030 | } | |
18031 | ||
18032 | per_cu = dwarf2_per_objfile->read_in_chain; | |
18033 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
18034 | while (per_cu != NULL) | |
18035 | { | |
18036 | struct dwarf2_per_cu_data *next_cu; | |
18037 | ||
18038 | next_cu = per_cu->cu->read_in_chain; | |
18039 | ||
18040 | if (!per_cu->cu->mark) | |
18041 | { | |
68dc6402 | 18042 | free_heap_comp_unit (per_cu->cu); |
ae038cb0 DJ |
18043 | *last_chain = next_cu; |
18044 | } | |
18045 | else | |
18046 | last_chain = &per_cu->cu->read_in_chain; | |
18047 | ||
18048 | per_cu = next_cu; | |
18049 | } | |
18050 | } | |
18051 | ||
18052 | /* Remove a single compilation unit from the cache. */ | |
18053 | ||
18054 | static void | |
dee91e82 | 18055 | free_one_cached_comp_unit (struct dwarf2_per_cu_data *target_per_cu) |
ae038cb0 DJ |
18056 | { |
18057 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
18058 | ||
18059 | per_cu = dwarf2_per_objfile->read_in_chain; | |
18060 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
18061 | while (per_cu != NULL) | |
18062 | { | |
18063 | struct dwarf2_per_cu_data *next_cu; | |
18064 | ||
18065 | next_cu = per_cu->cu->read_in_chain; | |
18066 | ||
dee91e82 | 18067 | if (per_cu == target_per_cu) |
ae038cb0 | 18068 | { |
68dc6402 | 18069 | free_heap_comp_unit (per_cu->cu); |
dee91e82 | 18070 | per_cu->cu = NULL; |
ae038cb0 DJ |
18071 | *last_chain = next_cu; |
18072 | break; | |
18073 | } | |
18074 | else | |
18075 | last_chain = &per_cu->cu->read_in_chain; | |
18076 | ||
18077 | per_cu = next_cu; | |
18078 | } | |
18079 | } | |
18080 | ||
fe3e1990 DJ |
18081 | /* Release all extra memory associated with OBJFILE. */ |
18082 | ||
18083 | void | |
18084 | dwarf2_free_objfile (struct objfile *objfile) | |
18085 | { | |
18086 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
18087 | ||
18088 | if (dwarf2_per_objfile == NULL) | |
18089 | return; | |
18090 | ||
18091 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
18092 | free_cached_comp_units (NULL); | |
18093 | ||
7b9f3c50 DE |
18094 | if (dwarf2_per_objfile->quick_file_names_table) |
18095 | htab_delete (dwarf2_per_objfile->quick_file_names_table); | |
9291a0cd | 18096 | |
fe3e1990 DJ |
18097 | /* Everything else should be on the objfile obstack. */ |
18098 | } | |
18099 | ||
dee91e82 DE |
18100 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
18101 | We store these in a hash table separate from the DIEs, and preserve them | |
18102 | when the DIEs are flushed out of cache. | |
18103 | ||
18104 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 DE |
18105 | uniquely identify the type. A file may have multiple .debug_types sections, |
18106 | or the type may come from a DWO file. We have to use something in | |
18107 | dwarf2_per_cu_data (or the pointer to it) because we can enter the lookup | |
18108 | routine, get_die_type_at_offset, from outside this file, and thus won't | |
18109 | necessarily have PER_CU->cu. Fortunately, PER_CU is stable for the life | |
18110 | of the objfile. */ | |
1c379e20 | 18111 | |
dee91e82 | 18112 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 18113 | { |
dee91e82 | 18114 | const struct dwarf2_per_cu_data *per_cu; |
b64f50a1 | 18115 | sect_offset offset; |
1c379e20 DJ |
18116 | struct type *type; |
18117 | }; | |
18118 | ||
dee91e82 | 18119 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
18120 | |
18121 | static hashval_t | |
dee91e82 | 18122 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 18123 | { |
dee91e82 | 18124 | const struct dwarf2_per_cu_offset_and_type *ofs = item; |
9a619af0 | 18125 | |
dee91e82 | 18126 | return (uintptr_t) ofs->per_cu + ofs->offset.sect_off; |
1c379e20 DJ |
18127 | } |
18128 | ||
dee91e82 | 18129 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
18130 | |
18131 | static int | |
dee91e82 | 18132 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 18133 | { |
dee91e82 DE |
18134 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs = item_lhs; |
18135 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs = item_rhs; | |
9a619af0 | 18136 | |
dee91e82 DE |
18137 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
18138 | && ofs_lhs->offset.sect_off == ofs_rhs->offset.sect_off); | |
1c379e20 DJ |
18139 | } |
18140 | ||
18141 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
18142 | table if necessary. For convenience, return TYPE. |
18143 | ||
18144 | The DIEs reading must have careful ordering to: | |
18145 | * Not cause infite loops trying to read in DIEs as a prerequisite for | |
18146 | reading current DIE. | |
18147 | * Not trying to dereference contents of still incompletely read in types | |
18148 | while reading in other DIEs. | |
18149 | * Enable referencing still incompletely read in types just by a pointer to | |
18150 | the type without accessing its fields. | |
18151 | ||
18152 | Therefore caller should follow these rules: | |
18153 | * Try to fetch any prerequisite types we may need to build this DIE type | |
18154 | before building the type and calling set_die_type. | |
e71ec853 | 18155 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
18156 | possible before fetching more types to complete the current type. |
18157 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 18158 | |
f792889a | 18159 | static struct type * |
1c379e20 DJ |
18160 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
18161 | { | |
dee91e82 | 18162 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
673bfd45 | 18163 | struct objfile *objfile = cu->objfile; |
1c379e20 | 18164 | |
b4ba55a1 JB |
18165 | /* For Ada types, make sure that the gnat-specific data is always |
18166 | initialized (if not already set). There are a few types where | |
18167 | we should not be doing so, because the type-specific area is | |
18168 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
18169 | where the type-specific area is used to store the floatformat). | |
18170 | But this is not a problem, because the gnat-specific information | |
18171 | is actually not needed for these types. */ | |
18172 | if (need_gnat_info (cu) | |
18173 | && TYPE_CODE (type) != TYPE_CODE_FUNC | |
18174 | && TYPE_CODE (type) != TYPE_CODE_FLT | |
18175 | && !HAVE_GNAT_AUX_INFO (type)) | |
18176 | INIT_GNAT_SPECIFIC (type); | |
18177 | ||
dee91e82 | 18178 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 18179 | { |
dee91e82 DE |
18180 | dwarf2_per_objfile->die_type_hash = |
18181 | htab_create_alloc_ex (127, | |
18182 | per_cu_offset_and_type_hash, | |
18183 | per_cu_offset_and_type_eq, | |
18184 | NULL, | |
18185 | &objfile->objfile_obstack, | |
18186 | hashtab_obstack_allocate, | |
18187 | dummy_obstack_deallocate); | |
f792889a | 18188 | } |
1c379e20 | 18189 | |
dee91e82 | 18190 | ofs.per_cu = cu->per_cu; |
1c379e20 DJ |
18191 | ofs.offset = die->offset; |
18192 | ofs.type = type; | |
dee91e82 DE |
18193 | slot = (struct dwarf2_per_cu_offset_and_type **) |
18194 | htab_find_slot (dwarf2_per_objfile->die_type_hash, &ofs, INSERT); | |
7e314c57 JK |
18195 | if (*slot) |
18196 | complaint (&symfile_complaints, | |
18197 | _("A problem internal to GDB: DIE 0x%x has type already set"), | |
b64f50a1 | 18198 | die->offset.sect_off); |
673bfd45 | 18199 | *slot = obstack_alloc (&objfile->objfile_obstack, sizeof (**slot)); |
1c379e20 | 18200 | **slot = ofs; |
f792889a | 18201 | return type; |
1c379e20 DJ |
18202 | } |
18203 | ||
380bca97 | 18204 | /* Look up the type for the die at OFFSET in the appropriate type_hash |
673bfd45 | 18205 | table, or return NULL if the die does not have a saved type. */ |
1c379e20 DJ |
18206 | |
18207 | static struct type * | |
b64f50a1 | 18208 | get_die_type_at_offset (sect_offset offset, |
673bfd45 | 18209 | struct dwarf2_per_cu_data *per_cu) |
1c379e20 | 18210 | { |
dee91e82 | 18211 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
f792889a | 18212 | |
dee91e82 | 18213 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 18214 | return NULL; |
1c379e20 | 18215 | |
dee91e82 | 18216 | ofs.per_cu = per_cu; |
673bfd45 | 18217 | ofs.offset = offset; |
dee91e82 | 18218 | slot = htab_find (dwarf2_per_objfile->die_type_hash, &ofs); |
1c379e20 DJ |
18219 | if (slot) |
18220 | return slot->type; | |
18221 | else | |
18222 | return NULL; | |
18223 | } | |
18224 | ||
673bfd45 DE |
18225 | /* Look up the type for DIE in the appropriate type_hash table, |
18226 | or return NULL if DIE does not have a saved type. */ | |
18227 | ||
18228 | static struct type * | |
18229 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
18230 | { | |
18231 | return get_die_type_at_offset (die->offset, cu->per_cu); | |
18232 | } | |
18233 | ||
10b3939b DJ |
18234 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
18235 | ||
18236 | static void | |
18237 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
18238 | struct dwarf2_per_cu_data *ref_per_cu) | |
18239 | { | |
18240 | void **slot; | |
18241 | ||
18242 | if (cu->dependencies == NULL) | |
18243 | cu->dependencies | |
18244 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
18245 | NULL, &cu->comp_unit_obstack, | |
18246 | hashtab_obstack_allocate, | |
18247 | dummy_obstack_deallocate); | |
18248 | ||
18249 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
18250 | if (*slot == NULL) | |
18251 | *slot = ref_per_cu; | |
18252 | } | |
1c379e20 | 18253 | |
f504f079 DE |
18254 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
18255 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
18256 | cache that we must keep because we are keeping CU. */ |
18257 | ||
10b3939b DJ |
18258 | static int |
18259 | dwarf2_mark_helper (void **slot, void *data) | |
18260 | { | |
18261 | struct dwarf2_per_cu_data *per_cu; | |
18262 | ||
18263 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
d07ed419 JK |
18264 | |
18265 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
18266 | reading of the chain. As such dependencies remain valid it is not much | |
18267 | useful to track and undo them during QUIT cleanups. */ | |
18268 | if (per_cu->cu == NULL) | |
18269 | return 1; | |
18270 | ||
10b3939b DJ |
18271 | if (per_cu->cu->mark) |
18272 | return 1; | |
18273 | per_cu->cu->mark = 1; | |
18274 | ||
18275 | if (per_cu->cu->dependencies != NULL) | |
18276 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
18277 | ||
18278 | return 1; | |
18279 | } | |
18280 | ||
f504f079 DE |
18281 | /* Set the mark field in CU and in every other compilation unit in the |
18282 | cache that we must keep because we are keeping CU. */ | |
18283 | ||
ae038cb0 DJ |
18284 | static void |
18285 | dwarf2_mark (struct dwarf2_cu *cu) | |
18286 | { | |
18287 | if (cu->mark) | |
18288 | return; | |
18289 | cu->mark = 1; | |
10b3939b DJ |
18290 | if (cu->dependencies != NULL) |
18291 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
18292 | } |
18293 | ||
18294 | static void | |
18295 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
18296 | { | |
18297 | while (per_cu) | |
18298 | { | |
18299 | per_cu->cu->mark = 0; | |
18300 | per_cu = per_cu->cu->read_in_chain; | |
18301 | } | |
72bf9492 DJ |
18302 | } |
18303 | ||
72bf9492 DJ |
18304 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
18305 | is its offset in .debug_info for this objfile. */ | |
18306 | ||
18307 | static hashval_t | |
18308 | partial_die_hash (const void *item) | |
18309 | { | |
18310 | const struct partial_die_info *part_die = item; | |
9a619af0 | 18311 | |
b64f50a1 | 18312 | return part_die->offset.sect_off; |
72bf9492 DJ |
18313 | } |
18314 | ||
18315 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
18316 | are equal if they have the same offset. */ | |
18317 | ||
18318 | static int | |
18319 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
18320 | { | |
18321 | const struct partial_die_info *part_die_lhs = item_lhs; | |
18322 | const struct partial_die_info *part_die_rhs = item_rhs; | |
9a619af0 | 18323 | |
b64f50a1 | 18324 | return part_die_lhs->offset.sect_off == part_die_rhs->offset.sect_off; |
72bf9492 DJ |
18325 | } |
18326 | ||
ae038cb0 DJ |
18327 | static struct cmd_list_element *set_dwarf2_cmdlist; |
18328 | static struct cmd_list_element *show_dwarf2_cmdlist; | |
18329 | ||
18330 | static void | |
18331 | set_dwarf2_cmd (char *args, int from_tty) | |
18332 | { | |
18333 | help_list (set_dwarf2_cmdlist, "maintenance set dwarf2 ", -1, gdb_stdout); | |
18334 | } | |
18335 | ||
18336 | static void | |
18337 | show_dwarf2_cmd (char *args, int from_tty) | |
6e70227d | 18338 | { |
ae038cb0 DJ |
18339 | cmd_show_list (show_dwarf2_cmdlist, from_tty, ""); |
18340 | } | |
18341 | ||
dce234bc PP |
18342 | /* If section described by INFO was mmapped, munmap it now. */ |
18343 | ||
18344 | static void | |
18345 | munmap_section_buffer (struct dwarf2_section_info *info) | |
18346 | { | |
b315ab21 | 18347 | if (info->map_addr != NULL) |
dce234bc PP |
18348 | { |
18349 | #ifdef HAVE_MMAP | |
b315ab21 | 18350 | int res; |
9a619af0 | 18351 | |
b315ab21 TG |
18352 | res = munmap (info->map_addr, info->map_len); |
18353 | gdb_assert (res == 0); | |
dce234bc PP |
18354 | #else |
18355 | /* Without HAVE_MMAP, we should never be here to begin with. */ | |
f3574227 | 18356 | gdb_assert_not_reached ("no mmap support"); |
dce234bc PP |
18357 | #endif |
18358 | } | |
18359 | } | |
18360 | ||
18361 | /* munmap debug sections for OBJFILE, if necessary. */ | |
18362 | ||
18363 | static void | |
c1bd65d0 | 18364 | dwarf2_per_objfile_free (struct objfile *objfile, void *d) |
dce234bc PP |
18365 | { |
18366 | struct dwarf2_per_objfile *data = d; | |
8b70b953 TT |
18367 | int ix; |
18368 | struct dwarf2_section_info *section; | |
9a619af0 | 18369 | |
16be1145 DE |
18370 | /* This is sorted according to the order they're defined in to make it easier |
18371 | to keep in sync. */ | |
dce234bc PP |
18372 | munmap_section_buffer (&data->info); |
18373 | munmap_section_buffer (&data->abbrev); | |
18374 | munmap_section_buffer (&data->line); | |
16be1145 | 18375 | munmap_section_buffer (&data->loc); |
dce234bc | 18376 | munmap_section_buffer (&data->macinfo); |
cf2c3c16 | 18377 | munmap_section_buffer (&data->macro); |
16be1145 | 18378 | munmap_section_buffer (&data->str); |
dce234bc | 18379 | munmap_section_buffer (&data->ranges); |
3019eac3 | 18380 | munmap_section_buffer (&data->addr); |
dce234bc PP |
18381 | munmap_section_buffer (&data->frame); |
18382 | munmap_section_buffer (&data->eh_frame); | |
9291a0cd | 18383 | munmap_section_buffer (&data->gdb_index); |
8b70b953 TT |
18384 | |
18385 | for (ix = 0; | |
18386 | VEC_iterate (dwarf2_section_info_def, data->types, ix, section); | |
18387 | ++ix) | |
18388 | munmap_section_buffer (section); | |
18389 | ||
95554aad TT |
18390 | for (ix = 0; ix < dwarf2_per_objfile->n_comp_units; ++ix) |
18391 | VEC_free (dwarf2_per_cu_ptr, | |
f4dc4d17 | 18392 | dwarf2_per_objfile->all_comp_units[ix]->s.imported_symtabs); |
95554aad | 18393 | |
8b70b953 | 18394 | VEC_free (dwarf2_section_info_def, data->types); |
3019eac3 DE |
18395 | |
18396 | if (data->dwo_files) | |
18397 | free_dwo_files (data->dwo_files, objfile); | |
9291a0cd TT |
18398 | } |
18399 | ||
18400 | \f | |
ae2de4f8 | 18401 | /* The "save gdb-index" command. */ |
9291a0cd TT |
18402 | |
18403 | /* The contents of the hash table we create when building the string | |
18404 | table. */ | |
18405 | struct strtab_entry | |
18406 | { | |
18407 | offset_type offset; | |
18408 | const char *str; | |
18409 | }; | |
18410 | ||
559a7a62 JK |
18411 | /* Hash function for a strtab_entry. |
18412 | ||
18413 | Function is used only during write_hash_table so no index format backward | |
18414 | compatibility is needed. */ | |
b89be57b | 18415 | |
9291a0cd TT |
18416 | static hashval_t |
18417 | hash_strtab_entry (const void *e) | |
18418 | { | |
18419 | const struct strtab_entry *entry = e; | |
559a7a62 | 18420 | return mapped_index_string_hash (INT_MAX, entry->str); |
9291a0cd TT |
18421 | } |
18422 | ||
18423 | /* Equality function for a strtab_entry. */ | |
b89be57b | 18424 | |
9291a0cd TT |
18425 | static int |
18426 | eq_strtab_entry (const void *a, const void *b) | |
18427 | { | |
18428 | const struct strtab_entry *ea = a; | |
18429 | const struct strtab_entry *eb = b; | |
18430 | return !strcmp (ea->str, eb->str); | |
18431 | } | |
18432 | ||
18433 | /* Create a strtab_entry hash table. */ | |
b89be57b | 18434 | |
9291a0cd TT |
18435 | static htab_t |
18436 | create_strtab (void) | |
18437 | { | |
18438 | return htab_create_alloc (100, hash_strtab_entry, eq_strtab_entry, | |
18439 | xfree, xcalloc, xfree); | |
18440 | } | |
18441 | ||
18442 | /* Add a string to the constant pool. Return the string's offset in | |
18443 | host order. */ | |
b89be57b | 18444 | |
9291a0cd TT |
18445 | static offset_type |
18446 | add_string (htab_t table, struct obstack *cpool, const char *str) | |
18447 | { | |
18448 | void **slot; | |
18449 | struct strtab_entry entry; | |
18450 | struct strtab_entry *result; | |
18451 | ||
18452 | entry.str = str; | |
18453 | slot = htab_find_slot (table, &entry, INSERT); | |
18454 | if (*slot) | |
18455 | result = *slot; | |
18456 | else | |
18457 | { | |
18458 | result = XNEW (struct strtab_entry); | |
18459 | result->offset = obstack_object_size (cpool); | |
18460 | result->str = str; | |
18461 | obstack_grow_str0 (cpool, str); | |
18462 | *slot = result; | |
18463 | } | |
18464 | return result->offset; | |
18465 | } | |
18466 | ||
18467 | /* An entry in the symbol table. */ | |
18468 | struct symtab_index_entry | |
18469 | { | |
18470 | /* The name of the symbol. */ | |
18471 | const char *name; | |
18472 | /* The offset of the name in the constant pool. */ | |
18473 | offset_type index_offset; | |
18474 | /* A sorted vector of the indices of all the CUs that hold an object | |
18475 | of this name. */ | |
18476 | VEC (offset_type) *cu_indices; | |
18477 | }; | |
18478 | ||
18479 | /* The symbol table. This is a power-of-2-sized hash table. */ | |
18480 | struct mapped_symtab | |
18481 | { | |
18482 | offset_type n_elements; | |
18483 | offset_type size; | |
18484 | struct symtab_index_entry **data; | |
18485 | }; | |
18486 | ||
18487 | /* Hash function for a symtab_index_entry. */ | |
b89be57b | 18488 | |
9291a0cd TT |
18489 | static hashval_t |
18490 | hash_symtab_entry (const void *e) | |
18491 | { | |
18492 | const struct symtab_index_entry *entry = e; | |
18493 | return iterative_hash (VEC_address (offset_type, entry->cu_indices), | |
18494 | sizeof (offset_type) * VEC_length (offset_type, | |
18495 | entry->cu_indices), | |
18496 | 0); | |
18497 | } | |
18498 | ||
18499 | /* Equality function for a symtab_index_entry. */ | |
b89be57b | 18500 | |
9291a0cd TT |
18501 | static int |
18502 | eq_symtab_entry (const void *a, const void *b) | |
18503 | { | |
18504 | const struct symtab_index_entry *ea = a; | |
18505 | const struct symtab_index_entry *eb = b; | |
18506 | int len = VEC_length (offset_type, ea->cu_indices); | |
18507 | if (len != VEC_length (offset_type, eb->cu_indices)) | |
18508 | return 0; | |
18509 | return !memcmp (VEC_address (offset_type, ea->cu_indices), | |
18510 | VEC_address (offset_type, eb->cu_indices), | |
18511 | sizeof (offset_type) * len); | |
18512 | } | |
18513 | ||
18514 | /* Destroy a symtab_index_entry. */ | |
b89be57b | 18515 | |
9291a0cd TT |
18516 | static void |
18517 | delete_symtab_entry (void *p) | |
18518 | { | |
18519 | struct symtab_index_entry *entry = p; | |
18520 | VEC_free (offset_type, entry->cu_indices); | |
18521 | xfree (entry); | |
18522 | } | |
18523 | ||
18524 | /* Create a hash table holding symtab_index_entry objects. */ | |
b89be57b | 18525 | |
9291a0cd | 18526 | static htab_t |
3876f04e | 18527 | create_symbol_hash_table (void) |
9291a0cd TT |
18528 | { |
18529 | return htab_create_alloc (100, hash_symtab_entry, eq_symtab_entry, | |
18530 | delete_symtab_entry, xcalloc, xfree); | |
18531 | } | |
18532 | ||
18533 | /* Create a new mapped symtab object. */ | |
b89be57b | 18534 | |
9291a0cd TT |
18535 | static struct mapped_symtab * |
18536 | create_mapped_symtab (void) | |
18537 | { | |
18538 | struct mapped_symtab *symtab = XNEW (struct mapped_symtab); | |
18539 | symtab->n_elements = 0; | |
18540 | symtab->size = 1024; | |
18541 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
18542 | return symtab; | |
18543 | } | |
18544 | ||
18545 | /* Destroy a mapped_symtab. */ | |
b89be57b | 18546 | |
9291a0cd TT |
18547 | static void |
18548 | cleanup_mapped_symtab (void *p) | |
18549 | { | |
18550 | struct mapped_symtab *symtab = p; | |
18551 | /* The contents of the array are freed when the other hash table is | |
18552 | destroyed. */ | |
18553 | xfree (symtab->data); | |
18554 | xfree (symtab); | |
18555 | } | |
18556 | ||
18557 | /* Find a slot in SYMTAB for the symbol NAME. Returns a pointer to | |
559a7a62 JK |
18558 | the slot. |
18559 | ||
18560 | Function is used only during write_hash_table so no index format backward | |
18561 | compatibility is needed. */ | |
b89be57b | 18562 | |
9291a0cd TT |
18563 | static struct symtab_index_entry ** |
18564 | find_slot (struct mapped_symtab *symtab, const char *name) | |
18565 | { | |
559a7a62 | 18566 | offset_type index, step, hash = mapped_index_string_hash (INT_MAX, name); |
9291a0cd TT |
18567 | |
18568 | index = hash & (symtab->size - 1); | |
18569 | step = ((hash * 17) & (symtab->size - 1)) | 1; | |
18570 | ||
18571 | for (;;) | |
18572 | { | |
18573 | if (!symtab->data[index] || !strcmp (name, symtab->data[index]->name)) | |
18574 | return &symtab->data[index]; | |
18575 | index = (index + step) & (symtab->size - 1); | |
18576 | } | |
18577 | } | |
18578 | ||
18579 | /* Expand SYMTAB's hash table. */ | |
b89be57b | 18580 | |
9291a0cd TT |
18581 | static void |
18582 | hash_expand (struct mapped_symtab *symtab) | |
18583 | { | |
18584 | offset_type old_size = symtab->size; | |
18585 | offset_type i; | |
18586 | struct symtab_index_entry **old_entries = symtab->data; | |
18587 | ||
18588 | symtab->size *= 2; | |
18589 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
18590 | ||
18591 | for (i = 0; i < old_size; ++i) | |
18592 | { | |
18593 | if (old_entries[i]) | |
18594 | { | |
18595 | struct symtab_index_entry **slot = find_slot (symtab, | |
18596 | old_entries[i]->name); | |
18597 | *slot = old_entries[i]; | |
18598 | } | |
18599 | } | |
18600 | ||
18601 | xfree (old_entries); | |
18602 | } | |
18603 | ||
156942c7 DE |
18604 | /* Add an entry to SYMTAB. NAME is the name of the symbol. |
18605 | CU_INDEX is the index of the CU in which the symbol appears. | |
18606 | IS_STATIC is one if the symbol is static, otherwise zero (global). */ | |
b89be57b | 18607 | |
9291a0cd TT |
18608 | static void |
18609 | add_index_entry (struct mapped_symtab *symtab, const char *name, | |
156942c7 | 18610 | int is_static, gdb_index_symbol_kind kind, |
9291a0cd TT |
18611 | offset_type cu_index) |
18612 | { | |
18613 | struct symtab_index_entry **slot; | |
156942c7 | 18614 | offset_type cu_index_and_attrs; |
9291a0cd TT |
18615 | |
18616 | ++symtab->n_elements; | |
18617 | if (4 * symtab->n_elements / 3 >= symtab->size) | |
18618 | hash_expand (symtab); | |
18619 | ||
18620 | slot = find_slot (symtab, name); | |
18621 | if (!*slot) | |
18622 | { | |
18623 | *slot = XNEW (struct symtab_index_entry); | |
18624 | (*slot)->name = name; | |
156942c7 | 18625 | /* index_offset is set later. */ |
9291a0cd TT |
18626 | (*slot)->cu_indices = NULL; |
18627 | } | |
156942c7 DE |
18628 | |
18629 | cu_index_and_attrs = 0; | |
18630 | DW2_GDB_INDEX_CU_SET_VALUE (cu_index_and_attrs, cu_index); | |
18631 | DW2_GDB_INDEX_SYMBOL_STATIC_SET_VALUE (cu_index_and_attrs, is_static); | |
18632 | DW2_GDB_INDEX_SYMBOL_KIND_SET_VALUE (cu_index_and_attrs, kind); | |
18633 | ||
18634 | /* We don't want to record an index value twice as we want to avoid the | |
18635 | duplication. | |
18636 | We process all global symbols and then all static symbols | |
18637 | (which would allow us to avoid the duplication by only having to check | |
18638 | the last entry pushed), but a symbol could have multiple kinds in one CU. | |
18639 | To keep things simple we don't worry about the duplication here and | |
18640 | sort and uniqufy the list after we've processed all symbols. */ | |
18641 | VEC_safe_push (offset_type, (*slot)->cu_indices, cu_index_and_attrs); | |
18642 | } | |
18643 | ||
18644 | /* qsort helper routine for uniquify_cu_indices. */ | |
18645 | ||
18646 | static int | |
18647 | offset_type_compare (const void *ap, const void *bp) | |
18648 | { | |
18649 | offset_type a = *(offset_type *) ap; | |
18650 | offset_type b = *(offset_type *) bp; | |
18651 | ||
18652 | return (a > b) - (b > a); | |
18653 | } | |
18654 | ||
18655 | /* Sort and remove duplicates of all symbols' cu_indices lists. */ | |
18656 | ||
18657 | static void | |
18658 | uniquify_cu_indices (struct mapped_symtab *symtab) | |
18659 | { | |
18660 | int i; | |
18661 | ||
18662 | for (i = 0; i < symtab->size; ++i) | |
18663 | { | |
18664 | struct symtab_index_entry *entry = symtab->data[i]; | |
18665 | ||
18666 | if (entry | |
18667 | && entry->cu_indices != NULL) | |
18668 | { | |
18669 | unsigned int next_to_insert, next_to_check; | |
18670 | offset_type last_value; | |
18671 | ||
18672 | qsort (VEC_address (offset_type, entry->cu_indices), | |
18673 | VEC_length (offset_type, entry->cu_indices), | |
18674 | sizeof (offset_type), offset_type_compare); | |
18675 | ||
18676 | last_value = VEC_index (offset_type, entry->cu_indices, 0); | |
18677 | next_to_insert = 1; | |
18678 | for (next_to_check = 1; | |
18679 | next_to_check < VEC_length (offset_type, entry->cu_indices); | |
18680 | ++next_to_check) | |
18681 | { | |
18682 | if (VEC_index (offset_type, entry->cu_indices, next_to_check) | |
18683 | != last_value) | |
18684 | { | |
18685 | last_value = VEC_index (offset_type, entry->cu_indices, | |
18686 | next_to_check); | |
18687 | VEC_replace (offset_type, entry->cu_indices, next_to_insert, | |
18688 | last_value); | |
18689 | ++next_to_insert; | |
18690 | } | |
18691 | } | |
18692 | VEC_truncate (offset_type, entry->cu_indices, next_to_insert); | |
18693 | } | |
18694 | } | |
9291a0cd TT |
18695 | } |
18696 | ||
18697 | /* Add a vector of indices to the constant pool. */ | |
b89be57b | 18698 | |
9291a0cd | 18699 | static offset_type |
3876f04e | 18700 | add_indices_to_cpool (htab_t symbol_hash_table, struct obstack *cpool, |
9291a0cd TT |
18701 | struct symtab_index_entry *entry) |
18702 | { | |
18703 | void **slot; | |
18704 | ||
3876f04e | 18705 | slot = htab_find_slot (symbol_hash_table, entry, INSERT); |
9291a0cd TT |
18706 | if (!*slot) |
18707 | { | |
18708 | offset_type len = VEC_length (offset_type, entry->cu_indices); | |
18709 | offset_type val = MAYBE_SWAP (len); | |
18710 | offset_type iter; | |
18711 | int i; | |
18712 | ||
18713 | *slot = entry; | |
18714 | entry->index_offset = obstack_object_size (cpool); | |
18715 | ||
18716 | obstack_grow (cpool, &val, sizeof (val)); | |
18717 | for (i = 0; | |
18718 | VEC_iterate (offset_type, entry->cu_indices, i, iter); | |
18719 | ++i) | |
18720 | { | |
18721 | val = MAYBE_SWAP (iter); | |
18722 | obstack_grow (cpool, &val, sizeof (val)); | |
18723 | } | |
18724 | } | |
18725 | else | |
18726 | { | |
18727 | struct symtab_index_entry *old_entry = *slot; | |
18728 | entry->index_offset = old_entry->index_offset; | |
18729 | entry = old_entry; | |
18730 | } | |
18731 | return entry->index_offset; | |
18732 | } | |
18733 | ||
18734 | /* Write the mapped hash table SYMTAB to the obstack OUTPUT, with | |
18735 | constant pool entries going into the obstack CPOOL. */ | |
b89be57b | 18736 | |
9291a0cd TT |
18737 | static void |
18738 | write_hash_table (struct mapped_symtab *symtab, | |
18739 | struct obstack *output, struct obstack *cpool) | |
18740 | { | |
18741 | offset_type i; | |
3876f04e | 18742 | htab_t symbol_hash_table; |
9291a0cd TT |
18743 | htab_t str_table; |
18744 | ||
3876f04e | 18745 | symbol_hash_table = create_symbol_hash_table (); |
9291a0cd | 18746 | str_table = create_strtab (); |
3876f04e | 18747 | |
9291a0cd TT |
18748 | /* We add all the index vectors to the constant pool first, to |
18749 | ensure alignment is ok. */ | |
18750 | for (i = 0; i < symtab->size; ++i) | |
18751 | { | |
18752 | if (symtab->data[i]) | |
3876f04e | 18753 | add_indices_to_cpool (symbol_hash_table, cpool, symtab->data[i]); |
9291a0cd TT |
18754 | } |
18755 | ||
18756 | /* Now write out the hash table. */ | |
18757 | for (i = 0; i < symtab->size; ++i) | |
18758 | { | |
18759 | offset_type str_off, vec_off; | |
18760 | ||
18761 | if (symtab->data[i]) | |
18762 | { | |
18763 | str_off = add_string (str_table, cpool, symtab->data[i]->name); | |
18764 | vec_off = symtab->data[i]->index_offset; | |
18765 | } | |
18766 | else | |
18767 | { | |
18768 | /* While 0 is a valid constant pool index, it is not valid | |
18769 | to have 0 for both offsets. */ | |
18770 | str_off = 0; | |
18771 | vec_off = 0; | |
18772 | } | |
18773 | ||
18774 | str_off = MAYBE_SWAP (str_off); | |
18775 | vec_off = MAYBE_SWAP (vec_off); | |
18776 | ||
18777 | obstack_grow (output, &str_off, sizeof (str_off)); | |
18778 | obstack_grow (output, &vec_off, sizeof (vec_off)); | |
18779 | } | |
18780 | ||
18781 | htab_delete (str_table); | |
3876f04e | 18782 | htab_delete (symbol_hash_table); |
9291a0cd TT |
18783 | } |
18784 | ||
0a5429f6 DE |
18785 | /* Struct to map psymtab to CU index in the index file. */ |
18786 | struct psymtab_cu_index_map | |
18787 | { | |
18788 | struct partial_symtab *psymtab; | |
18789 | unsigned int cu_index; | |
18790 | }; | |
18791 | ||
18792 | static hashval_t | |
18793 | hash_psymtab_cu_index (const void *item) | |
18794 | { | |
18795 | const struct psymtab_cu_index_map *map = item; | |
18796 | ||
18797 | return htab_hash_pointer (map->psymtab); | |
18798 | } | |
18799 | ||
18800 | static int | |
18801 | eq_psymtab_cu_index (const void *item_lhs, const void *item_rhs) | |
18802 | { | |
18803 | const struct psymtab_cu_index_map *lhs = item_lhs; | |
18804 | const struct psymtab_cu_index_map *rhs = item_rhs; | |
18805 | ||
18806 | return lhs->psymtab == rhs->psymtab; | |
18807 | } | |
18808 | ||
18809 | /* Helper struct for building the address table. */ | |
18810 | struct addrmap_index_data | |
18811 | { | |
18812 | struct objfile *objfile; | |
18813 | struct obstack *addr_obstack; | |
18814 | htab_t cu_index_htab; | |
18815 | ||
18816 | /* Non-zero if the previous_* fields are valid. | |
18817 | We can't write an entry until we see the next entry (since it is only then | |
18818 | that we know the end of the entry). */ | |
18819 | int previous_valid; | |
18820 | /* Index of the CU in the table of all CUs in the index file. */ | |
18821 | unsigned int previous_cu_index; | |
0963b4bd | 18822 | /* Start address of the CU. */ |
0a5429f6 DE |
18823 | CORE_ADDR previous_cu_start; |
18824 | }; | |
18825 | ||
18826 | /* Write an address entry to OBSTACK. */ | |
b89be57b | 18827 | |
9291a0cd | 18828 | static void |
0a5429f6 DE |
18829 | add_address_entry (struct objfile *objfile, struct obstack *obstack, |
18830 | CORE_ADDR start, CORE_ADDR end, unsigned int cu_index) | |
9291a0cd | 18831 | { |
0a5429f6 | 18832 | offset_type cu_index_to_write; |
9291a0cd TT |
18833 | char addr[8]; |
18834 | CORE_ADDR baseaddr; | |
18835 | ||
18836 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
18837 | ||
0a5429f6 DE |
18838 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, start - baseaddr); |
18839 | obstack_grow (obstack, addr, 8); | |
18840 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, end - baseaddr); | |
18841 | obstack_grow (obstack, addr, 8); | |
18842 | cu_index_to_write = MAYBE_SWAP (cu_index); | |
18843 | obstack_grow (obstack, &cu_index_to_write, sizeof (offset_type)); | |
18844 | } | |
18845 | ||
18846 | /* Worker function for traversing an addrmap to build the address table. */ | |
18847 | ||
18848 | static int | |
18849 | add_address_entry_worker (void *datap, CORE_ADDR start_addr, void *obj) | |
18850 | { | |
18851 | struct addrmap_index_data *data = datap; | |
18852 | struct partial_symtab *pst = obj; | |
0a5429f6 DE |
18853 | |
18854 | if (data->previous_valid) | |
18855 | add_address_entry (data->objfile, data->addr_obstack, | |
18856 | data->previous_cu_start, start_addr, | |
18857 | data->previous_cu_index); | |
18858 | ||
18859 | data->previous_cu_start = start_addr; | |
18860 | if (pst != NULL) | |
18861 | { | |
18862 | struct psymtab_cu_index_map find_map, *map; | |
18863 | find_map.psymtab = pst; | |
18864 | map = htab_find (data->cu_index_htab, &find_map); | |
18865 | gdb_assert (map != NULL); | |
18866 | data->previous_cu_index = map->cu_index; | |
18867 | data->previous_valid = 1; | |
18868 | } | |
18869 | else | |
18870 | data->previous_valid = 0; | |
18871 | ||
18872 | return 0; | |
18873 | } | |
18874 | ||
18875 | /* Write OBJFILE's address map to OBSTACK. | |
18876 | CU_INDEX_HTAB is used to map addrmap entries to their CU indices | |
18877 | in the index file. */ | |
18878 | ||
18879 | static void | |
18880 | write_address_map (struct objfile *objfile, struct obstack *obstack, | |
18881 | htab_t cu_index_htab) | |
18882 | { | |
18883 | struct addrmap_index_data addrmap_index_data; | |
18884 | ||
18885 | /* When writing the address table, we have to cope with the fact that | |
18886 | the addrmap iterator only provides the start of a region; we have to | |
18887 | wait until the next invocation to get the start of the next region. */ | |
18888 | ||
18889 | addrmap_index_data.objfile = objfile; | |
18890 | addrmap_index_data.addr_obstack = obstack; | |
18891 | addrmap_index_data.cu_index_htab = cu_index_htab; | |
18892 | addrmap_index_data.previous_valid = 0; | |
18893 | ||
18894 | addrmap_foreach (objfile->psymtabs_addrmap, add_address_entry_worker, | |
18895 | &addrmap_index_data); | |
18896 | ||
18897 | /* It's highly unlikely the last entry (end address = 0xff...ff) | |
18898 | is valid, but we should still handle it. | |
18899 | The end address is recorded as the start of the next region, but that | |
18900 | doesn't work here. To cope we pass 0xff...ff, this is a rare situation | |
18901 | anyway. */ | |
18902 | if (addrmap_index_data.previous_valid) | |
18903 | add_address_entry (objfile, obstack, | |
18904 | addrmap_index_data.previous_cu_start, (CORE_ADDR) -1, | |
18905 | addrmap_index_data.previous_cu_index); | |
9291a0cd TT |
18906 | } |
18907 | ||
156942c7 DE |
18908 | /* Return the symbol kind of PSYM. */ |
18909 | ||
18910 | static gdb_index_symbol_kind | |
18911 | symbol_kind (struct partial_symbol *psym) | |
18912 | { | |
18913 | domain_enum domain = PSYMBOL_DOMAIN (psym); | |
18914 | enum address_class aclass = PSYMBOL_CLASS (psym); | |
18915 | ||
18916 | switch (domain) | |
18917 | { | |
18918 | case VAR_DOMAIN: | |
18919 | switch (aclass) | |
18920 | { | |
18921 | case LOC_BLOCK: | |
18922 | return GDB_INDEX_SYMBOL_KIND_FUNCTION; | |
18923 | case LOC_TYPEDEF: | |
18924 | return GDB_INDEX_SYMBOL_KIND_TYPE; | |
18925 | case LOC_COMPUTED: | |
18926 | case LOC_CONST_BYTES: | |
18927 | case LOC_OPTIMIZED_OUT: | |
18928 | case LOC_STATIC: | |
18929 | return GDB_INDEX_SYMBOL_KIND_VARIABLE; | |
18930 | case LOC_CONST: | |
18931 | /* Note: It's currently impossible to recognize psyms as enum values | |
18932 | short of reading the type info. For now punt. */ | |
18933 | return GDB_INDEX_SYMBOL_KIND_VARIABLE; | |
18934 | default: | |
18935 | /* There are other LOC_FOO values that one might want to classify | |
18936 | as variables, but dwarf2read.c doesn't currently use them. */ | |
18937 | return GDB_INDEX_SYMBOL_KIND_OTHER; | |
18938 | } | |
18939 | case STRUCT_DOMAIN: | |
18940 | return GDB_INDEX_SYMBOL_KIND_TYPE; | |
18941 | default: | |
18942 | return GDB_INDEX_SYMBOL_KIND_OTHER; | |
18943 | } | |
18944 | } | |
18945 | ||
9291a0cd | 18946 | /* Add a list of partial symbols to SYMTAB. */ |
b89be57b | 18947 | |
9291a0cd TT |
18948 | static void |
18949 | write_psymbols (struct mapped_symtab *symtab, | |
987d643c | 18950 | htab_t psyms_seen, |
9291a0cd TT |
18951 | struct partial_symbol **psymp, |
18952 | int count, | |
987d643c TT |
18953 | offset_type cu_index, |
18954 | int is_static) | |
9291a0cd TT |
18955 | { |
18956 | for (; count-- > 0; ++psymp) | |
18957 | { | |
156942c7 DE |
18958 | struct partial_symbol *psym = *psymp; |
18959 | void **slot; | |
987d643c | 18960 | |
156942c7 | 18961 | if (SYMBOL_LANGUAGE (psym) == language_ada) |
9291a0cd | 18962 | error (_("Ada is not currently supported by the index")); |
987d643c | 18963 | |
987d643c | 18964 | /* Only add a given psymbol once. */ |
156942c7 | 18965 | slot = htab_find_slot (psyms_seen, psym, INSERT); |
987d643c TT |
18966 | if (!*slot) |
18967 | { | |
156942c7 DE |
18968 | gdb_index_symbol_kind kind = symbol_kind (psym); |
18969 | ||
18970 | *slot = psym; | |
18971 | add_index_entry (symtab, SYMBOL_SEARCH_NAME (psym), | |
18972 | is_static, kind, cu_index); | |
987d643c | 18973 | } |
9291a0cd TT |
18974 | } |
18975 | } | |
18976 | ||
18977 | /* Write the contents of an ("unfinished") obstack to FILE. Throw an | |
18978 | exception if there is an error. */ | |
b89be57b | 18979 | |
9291a0cd TT |
18980 | static void |
18981 | write_obstack (FILE *file, struct obstack *obstack) | |
18982 | { | |
18983 | if (fwrite (obstack_base (obstack), 1, obstack_object_size (obstack), | |
18984 | file) | |
18985 | != obstack_object_size (obstack)) | |
18986 | error (_("couldn't data write to file")); | |
18987 | } | |
18988 | ||
18989 | /* Unlink a file if the argument is not NULL. */ | |
b89be57b | 18990 | |
9291a0cd TT |
18991 | static void |
18992 | unlink_if_set (void *p) | |
18993 | { | |
18994 | char **filename = p; | |
18995 | if (*filename) | |
18996 | unlink (*filename); | |
18997 | } | |
18998 | ||
1fd400ff TT |
18999 | /* A helper struct used when iterating over debug_types. */ |
19000 | struct signatured_type_index_data | |
19001 | { | |
19002 | struct objfile *objfile; | |
19003 | struct mapped_symtab *symtab; | |
19004 | struct obstack *types_list; | |
987d643c | 19005 | htab_t psyms_seen; |
1fd400ff TT |
19006 | int cu_index; |
19007 | }; | |
19008 | ||
19009 | /* A helper function that writes a single signatured_type to an | |
19010 | obstack. */ | |
b89be57b | 19011 | |
1fd400ff TT |
19012 | static int |
19013 | write_one_signatured_type (void **slot, void *d) | |
19014 | { | |
19015 | struct signatured_type_index_data *info = d; | |
19016 | struct signatured_type *entry = (struct signatured_type *) *slot; | |
e254ef6a DE |
19017 | struct dwarf2_per_cu_data *per_cu = &entry->per_cu; |
19018 | struct partial_symtab *psymtab = per_cu->v.psymtab; | |
1fd400ff TT |
19019 | gdb_byte val[8]; |
19020 | ||
19021 | write_psymbols (info->symtab, | |
987d643c | 19022 | info->psyms_seen, |
3e43a32a MS |
19023 | info->objfile->global_psymbols.list |
19024 | + psymtab->globals_offset, | |
987d643c TT |
19025 | psymtab->n_global_syms, info->cu_index, |
19026 | 0); | |
1fd400ff | 19027 | write_psymbols (info->symtab, |
987d643c | 19028 | info->psyms_seen, |
3e43a32a MS |
19029 | info->objfile->static_psymbols.list |
19030 | + psymtab->statics_offset, | |
987d643c TT |
19031 | psymtab->n_static_syms, info->cu_index, |
19032 | 1); | |
1fd400ff | 19033 | |
b64f50a1 JK |
19034 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
19035 | entry->per_cu.offset.sect_off); | |
1fd400ff | 19036 | obstack_grow (info->types_list, val, 8); |
3019eac3 DE |
19037 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
19038 | entry->type_offset_in_tu.cu_off); | |
1fd400ff TT |
19039 | obstack_grow (info->types_list, val, 8); |
19040 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, entry->signature); | |
19041 | obstack_grow (info->types_list, val, 8); | |
19042 | ||
19043 | ++info->cu_index; | |
19044 | ||
19045 | return 1; | |
19046 | } | |
19047 | ||
95554aad TT |
19048 | /* Recurse into all "included" dependencies and write their symbols as |
19049 | if they appeared in this psymtab. */ | |
19050 | ||
19051 | static void | |
19052 | recursively_write_psymbols (struct objfile *objfile, | |
19053 | struct partial_symtab *psymtab, | |
19054 | struct mapped_symtab *symtab, | |
19055 | htab_t psyms_seen, | |
19056 | offset_type cu_index) | |
19057 | { | |
19058 | int i; | |
19059 | ||
19060 | for (i = 0; i < psymtab->number_of_dependencies; ++i) | |
19061 | if (psymtab->dependencies[i]->user != NULL) | |
19062 | recursively_write_psymbols (objfile, psymtab->dependencies[i], | |
19063 | symtab, psyms_seen, cu_index); | |
19064 | ||
19065 | write_psymbols (symtab, | |
19066 | psyms_seen, | |
19067 | objfile->global_psymbols.list + psymtab->globals_offset, | |
19068 | psymtab->n_global_syms, cu_index, | |
19069 | 0); | |
19070 | write_psymbols (symtab, | |
19071 | psyms_seen, | |
19072 | objfile->static_psymbols.list + psymtab->statics_offset, | |
19073 | psymtab->n_static_syms, cu_index, | |
19074 | 1); | |
19075 | } | |
19076 | ||
9291a0cd | 19077 | /* Create an index file for OBJFILE in the directory DIR. */ |
b89be57b | 19078 | |
9291a0cd TT |
19079 | static void |
19080 | write_psymtabs_to_index (struct objfile *objfile, const char *dir) | |
19081 | { | |
19082 | struct cleanup *cleanup; | |
19083 | char *filename, *cleanup_filename; | |
1fd400ff TT |
19084 | struct obstack contents, addr_obstack, constant_pool, symtab_obstack; |
19085 | struct obstack cu_list, types_cu_list; | |
9291a0cd TT |
19086 | int i; |
19087 | FILE *out_file; | |
19088 | struct mapped_symtab *symtab; | |
19089 | offset_type val, size_of_contents, total_len; | |
19090 | struct stat st; | |
987d643c | 19091 | htab_t psyms_seen; |
0a5429f6 DE |
19092 | htab_t cu_index_htab; |
19093 | struct psymtab_cu_index_map *psymtab_cu_index_map; | |
9291a0cd | 19094 | |
b4f2f049 | 19095 | if (!objfile->psymtabs || !objfile->psymtabs_addrmap) |
9291a0cd | 19096 | return; |
b4f2f049 | 19097 | |
9291a0cd TT |
19098 | if (dwarf2_per_objfile->using_index) |
19099 | error (_("Cannot use an index to create the index")); | |
19100 | ||
8b70b953 TT |
19101 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) > 1) |
19102 | error (_("Cannot make an index when the file has multiple .debug_types sections")); | |
19103 | ||
9291a0cd | 19104 | if (stat (objfile->name, &st) < 0) |
7e17e088 | 19105 | perror_with_name (objfile->name); |
9291a0cd TT |
19106 | |
19107 | filename = concat (dir, SLASH_STRING, lbasename (objfile->name), | |
19108 | INDEX_SUFFIX, (char *) NULL); | |
19109 | cleanup = make_cleanup (xfree, filename); | |
19110 | ||
19111 | out_file = fopen (filename, "wb"); | |
19112 | if (!out_file) | |
19113 | error (_("Can't open `%s' for writing"), filename); | |
19114 | ||
19115 | cleanup_filename = filename; | |
19116 | make_cleanup (unlink_if_set, &cleanup_filename); | |
19117 | ||
19118 | symtab = create_mapped_symtab (); | |
19119 | make_cleanup (cleanup_mapped_symtab, symtab); | |
19120 | ||
19121 | obstack_init (&addr_obstack); | |
19122 | make_cleanup_obstack_free (&addr_obstack); | |
19123 | ||
19124 | obstack_init (&cu_list); | |
19125 | make_cleanup_obstack_free (&cu_list); | |
19126 | ||
1fd400ff TT |
19127 | obstack_init (&types_cu_list); |
19128 | make_cleanup_obstack_free (&types_cu_list); | |
19129 | ||
987d643c TT |
19130 | psyms_seen = htab_create_alloc (100, htab_hash_pointer, htab_eq_pointer, |
19131 | NULL, xcalloc, xfree); | |
96408a79 | 19132 | make_cleanup_htab_delete (psyms_seen); |
987d643c | 19133 | |
0a5429f6 DE |
19134 | /* While we're scanning CU's create a table that maps a psymtab pointer |
19135 | (which is what addrmap records) to its index (which is what is recorded | |
19136 | in the index file). This will later be needed to write the address | |
19137 | table. */ | |
19138 | cu_index_htab = htab_create_alloc (100, | |
19139 | hash_psymtab_cu_index, | |
19140 | eq_psymtab_cu_index, | |
19141 | NULL, xcalloc, xfree); | |
96408a79 | 19142 | make_cleanup_htab_delete (cu_index_htab); |
0a5429f6 DE |
19143 | psymtab_cu_index_map = (struct psymtab_cu_index_map *) |
19144 | xmalloc (sizeof (struct psymtab_cu_index_map) | |
19145 | * dwarf2_per_objfile->n_comp_units); | |
19146 | make_cleanup (xfree, psymtab_cu_index_map); | |
19147 | ||
19148 | /* The CU list is already sorted, so we don't need to do additional | |
1fd400ff TT |
19149 | work here. Also, the debug_types entries do not appear in |
19150 | all_comp_units, but only in their own hash table. */ | |
9291a0cd TT |
19151 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
19152 | { | |
3e43a32a MS |
19153 | struct dwarf2_per_cu_data *per_cu |
19154 | = dwarf2_per_objfile->all_comp_units[i]; | |
e254ef6a | 19155 | struct partial_symtab *psymtab = per_cu->v.psymtab; |
9291a0cd | 19156 | gdb_byte val[8]; |
0a5429f6 DE |
19157 | struct psymtab_cu_index_map *map; |
19158 | void **slot; | |
9291a0cd | 19159 | |
95554aad TT |
19160 | if (psymtab->user == NULL) |
19161 | recursively_write_psymbols (objfile, psymtab, symtab, psyms_seen, i); | |
9291a0cd | 19162 | |
0a5429f6 DE |
19163 | map = &psymtab_cu_index_map[i]; |
19164 | map->psymtab = psymtab; | |
19165 | map->cu_index = i; | |
19166 | slot = htab_find_slot (cu_index_htab, map, INSERT); | |
19167 | gdb_assert (slot != NULL); | |
19168 | gdb_assert (*slot == NULL); | |
19169 | *slot = map; | |
9291a0cd | 19170 | |
b64f50a1 JK |
19171 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
19172 | per_cu->offset.sect_off); | |
9291a0cd | 19173 | obstack_grow (&cu_list, val, 8); |
e254ef6a | 19174 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, per_cu->length); |
9291a0cd TT |
19175 | obstack_grow (&cu_list, val, 8); |
19176 | } | |
19177 | ||
0a5429f6 DE |
19178 | /* Dump the address map. */ |
19179 | write_address_map (objfile, &addr_obstack, cu_index_htab); | |
19180 | ||
1fd400ff TT |
19181 | /* Write out the .debug_type entries, if any. */ |
19182 | if (dwarf2_per_objfile->signatured_types) | |
19183 | { | |
19184 | struct signatured_type_index_data sig_data; | |
19185 | ||
19186 | sig_data.objfile = objfile; | |
19187 | sig_data.symtab = symtab; | |
19188 | sig_data.types_list = &types_cu_list; | |
987d643c | 19189 | sig_data.psyms_seen = psyms_seen; |
1fd400ff TT |
19190 | sig_data.cu_index = dwarf2_per_objfile->n_comp_units; |
19191 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types, | |
19192 | write_one_signatured_type, &sig_data); | |
19193 | } | |
19194 | ||
156942c7 DE |
19195 | /* Now that we've processed all symbols we can shrink their cu_indices |
19196 | lists. */ | |
19197 | uniquify_cu_indices (symtab); | |
19198 | ||
9291a0cd TT |
19199 | obstack_init (&constant_pool); |
19200 | make_cleanup_obstack_free (&constant_pool); | |
19201 | obstack_init (&symtab_obstack); | |
19202 | make_cleanup_obstack_free (&symtab_obstack); | |
19203 | write_hash_table (symtab, &symtab_obstack, &constant_pool); | |
19204 | ||
19205 | obstack_init (&contents); | |
19206 | make_cleanup_obstack_free (&contents); | |
1fd400ff | 19207 | size_of_contents = 6 * sizeof (offset_type); |
9291a0cd TT |
19208 | total_len = size_of_contents; |
19209 | ||
19210 | /* The version number. */ | |
156942c7 | 19211 | val = MAYBE_SWAP (7); |
9291a0cd TT |
19212 | obstack_grow (&contents, &val, sizeof (val)); |
19213 | ||
19214 | /* The offset of the CU list from the start of the file. */ | |
19215 | val = MAYBE_SWAP (total_len); | |
19216 | obstack_grow (&contents, &val, sizeof (val)); | |
19217 | total_len += obstack_object_size (&cu_list); | |
19218 | ||
1fd400ff TT |
19219 | /* The offset of the types CU list from the start of the file. */ |
19220 | val = MAYBE_SWAP (total_len); | |
19221 | obstack_grow (&contents, &val, sizeof (val)); | |
19222 | total_len += obstack_object_size (&types_cu_list); | |
19223 | ||
9291a0cd TT |
19224 | /* The offset of the address table from the start of the file. */ |
19225 | val = MAYBE_SWAP (total_len); | |
19226 | obstack_grow (&contents, &val, sizeof (val)); | |
19227 | total_len += obstack_object_size (&addr_obstack); | |
19228 | ||
19229 | /* The offset of the symbol table from the start of the file. */ | |
19230 | val = MAYBE_SWAP (total_len); | |
19231 | obstack_grow (&contents, &val, sizeof (val)); | |
19232 | total_len += obstack_object_size (&symtab_obstack); | |
19233 | ||
19234 | /* The offset of the constant pool from the start of the file. */ | |
19235 | val = MAYBE_SWAP (total_len); | |
19236 | obstack_grow (&contents, &val, sizeof (val)); | |
19237 | total_len += obstack_object_size (&constant_pool); | |
19238 | ||
19239 | gdb_assert (obstack_object_size (&contents) == size_of_contents); | |
19240 | ||
19241 | write_obstack (out_file, &contents); | |
19242 | write_obstack (out_file, &cu_list); | |
1fd400ff | 19243 | write_obstack (out_file, &types_cu_list); |
9291a0cd TT |
19244 | write_obstack (out_file, &addr_obstack); |
19245 | write_obstack (out_file, &symtab_obstack); | |
19246 | write_obstack (out_file, &constant_pool); | |
19247 | ||
19248 | fclose (out_file); | |
19249 | ||
19250 | /* We want to keep the file, so we set cleanup_filename to NULL | |
19251 | here. See unlink_if_set. */ | |
19252 | cleanup_filename = NULL; | |
19253 | ||
19254 | do_cleanups (cleanup); | |
19255 | } | |
19256 | ||
90476074 TT |
19257 | /* Implementation of the `save gdb-index' command. |
19258 | ||
19259 | Note that the file format used by this command is documented in the | |
19260 | GDB manual. Any changes here must be documented there. */ | |
11570e71 | 19261 | |
9291a0cd TT |
19262 | static void |
19263 | save_gdb_index_command (char *arg, int from_tty) | |
19264 | { | |
19265 | struct objfile *objfile; | |
19266 | ||
19267 | if (!arg || !*arg) | |
96d19272 | 19268 | error (_("usage: save gdb-index DIRECTORY")); |
9291a0cd TT |
19269 | |
19270 | ALL_OBJFILES (objfile) | |
19271 | { | |
19272 | struct stat st; | |
19273 | ||
19274 | /* If the objfile does not correspond to an actual file, skip it. */ | |
19275 | if (stat (objfile->name, &st) < 0) | |
19276 | continue; | |
19277 | ||
19278 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
19279 | if (dwarf2_per_objfile) | |
19280 | { | |
19281 | volatile struct gdb_exception except; | |
19282 | ||
19283 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
19284 | { | |
19285 | write_psymtabs_to_index (objfile, arg); | |
19286 | } | |
19287 | if (except.reason < 0) | |
19288 | exception_fprintf (gdb_stderr, except, | |
19289 | _("Error while writing index for `%s': "), | |
19290 | objfile->name); | |
19291 | } | |
19292 | } | |
dce234bc PP |
19293 | } |
19294 | ||
9291a0cd TT |
19295 | \f |
19296 | ||
9eae7c52 TT |
19297 | int dwarf2_always_disassemble; |
19298 | ||
19299 | static void | |
19300 | show_dwarf2_always_disassemble (struct ui_file *file, int from_tty, | |
19301 | struct cmd_list_element *c, const char *value) | |
19302 | { | |
3e43a32a MS |
19303 | fprintf_filtered (file, |
19304 | _("Whether to always disassemble " | |
19305 | "DWARF expressions is %s.\n"), | |
9eae7c52 TT |
19306 | value); |
19307 | } | |
19308 | ||
900e11f9 JK |
19309 | static void |
19310 | show_check_physname (struct ui_file *file, int from_tty, | |
19311 | struct cmd_list_element *c, const char *value) | |
19312 | { | |
19313 | fprintf_filtered (file, | |
19314 | _("Whether to check \"physname\" is %s.\n"), | |
19315 | value); | |
19316 | } | |
19317 | ||
6502dd73 DJ |
19318 | void _initialize_dwarf2_read (void); |
19319 | ||
19320 | void | |
19321 | _initialize_dwarf2_read (void) | |
19322 | { | |
96d19272 JK |
19323 | struct cmd_list_element *c; |
19324 | ||
dce234bc | 19325 | dwarf2_objfile_data_key |
c1bd65d0 | 19326 | = register_objfile_data_with_cleanup (NULL, dwarf2_per_objfile_free); |
ae038cb0 | 19327 | |
1bedd215 AC |
19328 | add_prefix_cmd ("dwarf2", class_maintenance, set_dwarf2_cmd, _("\ |
19329 | Set DWARF 2 specific variables.\n\ | |
19330 | Configure DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
19331 | &set_dwarf2_cmdlist, "maintenance set dwarf2 ", |
19332 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
19333 | ||
1bedd215 AC |
19334 | add_prefix_cmd ("dwarf2", class_maintenance, show_dwarf2_cmd, _("\ |
19335 | Show DWARF 2 specific variables\n\ | |
19336 | Show DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
19337 | &show_dwarf2_cmdlist, "maintenance show dwarf2 ", |
19338 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
19339 | ||
19340 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, | |
7915a72c AC |
19341 | &dwarf2_max_cache_age, _("\ |
19342 | Set the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
19343 | Show the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
19344 | A higher limit means that cached compilation units will be stored\n\ | |
19345 | in memory longer, and more total memory will be used. Zero disables\n\ | |
19346 | caching, which can slow down startup."), | |
2c5b56ce | 19347 | NULL, |
920d2a44 | 19348 | show_dwarf2_max_cache_age, |
2c5b56ce | 19349 | &set_dwarf2_cmdlist, |
ae038cb0 | 19350 | &show_dwarf2_cmdlist); |
d97bc12b | 19351 | |
9eae7c52 TT |
19352 | add_setshow_boolean_cmd ("always-disassemble", class_obscure, |
19353 | &dwarf2_always_disassemble, _("\ | |
19354 | Set whether `info address' always disassembles DWARF expressions."), _("\ | |
19355 | Show whether `info address' always disassembles DWARF expressions."), _("\ | |
19356 | When enabled, DWARF expressions are always printed in an assembly-like\n\ | |
19357 | syntax. When disabled, expressions will be printed in a more\n\ | |
19358 | conversational style, when possible."), | |
19359 | NULL, | |
19360 | show_dwarf2_always_disassemble, | |
19361 | &set_dwarf2_cmdlist, | |
19362 | &show_dwarf2_cmdlist); | |
19363 | ||
45cfd468 DE |
19364 | add_setshow_boolean_cmd ("dwarf2-read", no_class, &dwarf2_read_debug, _("\ |
19365 | Set debugging of the dwarf2 reader."), _("\ | |
19366 | Show debugging of the dwarf2 reader."), _("\ | |
19367 | When enabled, debugging messages are printed during dwarf2 reading\n\ | |
19368 | and symtab expansion."), | |
19369 | NULL, | |
19370 | NULL, | |
19371 | &setdebuglist, &showdebuglist); | |
19372 | ||
d97bc12b DE |
19373 | add_setshow_zinteger_cmd ("dwarf2-die", no_class, &dwarf2_die_debug, _("\ |
19374 | Set debugging of the dwarf2 DIE reader."), _("\ | |
19375 | Show debugging of the dwarf2 DIE reader."), _("\ | |
19376 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
19377 | The value is the maximum depth to print."), | |
19378 | NULL, | |
19379 | NULL, | |
19380 | &setdebuglist, &showdebuglist); | |
9291a0cd | 19381 | |
900e11f9 JK |
19382 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
19383 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
19384 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
19385 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
19386 | the demangler."), | |
19387 | NULL, show_check_physname, | |
19388 | &setdebuglist, &showdebuglist); | |
19389 | ||
96d19272 | 19390 | c = add_cmd ("gdb-index", class_files, save_gdb_index_command, |
11570e71 | 19391 | _("\ |
fc1a9d6e | 19392 | Save a gdb-index file.\n\ |
11570e71 | 19393 | Usage: save gdb-index DIRECTORY"), |
96d19272 JK |
19394 | &save_cmdlist); |
19395 | set_cmd_completer (c, filename_completer); | |
6502dd73 | 19396 | } |