Commit | Line | Data |
---|---|---|
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> |
cbb099e8 | 67 | #include "gdb_bfd.h" |
4357ac6c | 68 | #include "f-lang.h" |
4c2df51b | 69 | |
c906108c SS |
70 | #include <fcntl.h> |
71 | #include "gdb_string.h" | |
4bdf3d34 | 72 | #include "gdb_assert.h" |
c906108c | 73 | #include <sys/types.h> |
d8151005 | 74 | |
34eaf542 TT |
75 | typedef struct symbol *symbolp; |
76 | DEF_VEC_P (symbolp); | |
77 | ||
45cfd468 DE |
78 | /* When non-zero, print basic high level tracing messages. |
79 | This is in contrast to the low level DIE reading of dwarf2_die_debug. */ | |
80 | static int dwarf2_read_debug = 0; | |
81 | ||
d97bc12b | 82 | /* When non-zero, dump DIEs after they are read in. */ |
ccce17b0 | 83 | static unsigned int dwarf2_die_debug = 0; |
d97bc12b | 84 | |
900e11f9 JK |
85 | /* When non-zero, cross-check physname against demangler. */ |
86 | static int check_physname = 0; | |
87 | ||
481860b3 | 88 | /* When non-zero, do not reject deprecated .gdb_index sections. */ |
e615022a | 89 | static int use_deprecated_index_sections = 0; |
481860b3 | 90 | |
df8a16a1 DJ |
91 | /* When set, the file that we're processing is known to have debugging |
92 | info for C++ namespaces. GCC 3.3.x did not produce this information, | |
93 | but later versions do. */ | |
94 | ||
95 | static int processing_has_namespace_info; | |
96 | ||
6502dd73 DJ |
97 | static const struct objfile_data *dwarf2_objfile_data_key; |
98 | ||
dce234bc PP |
99 | struct dwarf2_section_info |
100 | { | |
101 | asection *asection; | |
102 | gdb_byte *buffer; | |
103 | bfd_size_type size; | |
be391dca TT |
104 | /* True if we have tried to read this section. */ |
105 | int readin; | |
dce234bc PP |
106 | }; |
107 | ||
8b70b953 TT |
108 | typedef struct dwarf2_section_info dwarf2_section_info_def; |
109 | DEF_VEC_O (dwarf2_section_info_def); | |
110 | ||
9291a0cd TT |
111 | /* All offsets in the index are of this type. It must be |
112 | architecture-independent. */ | |
113 | typedef uint32_t offset_type; | |
114 | ||
115 | DEF_VEC_I (offset_type); | |
116 | ||
156942c7 DE |
117 | /* Ensure only legit values are used. */ |
118 | #define DW2_GDB_INDEX_SYMBOL_STATIC_SET_VALUE(cu_index, value) \ | |
119 | do { \ | |
120 | gdb_assert ((unsigned int) (value) <= 1); \ | |
121 | GDB_INDEX_SYMBOL_STATIC_SET_VALUE((cu_index), (value)); \ | |
122 | } while (0) | |
123 | ||
124 | /* Ensure only legit values are used. */ | |
125 | #define DW2_GDB_INDEX_SYMBOL_KIND_SET_VALUE(cu_index, value) \ | |
126 | do { \ | |
127 | gdb_assert ((value) >= GDB_INDEX_SYMBOL_KIND_TYPE \ | |
128 | && (value) <= GDB_INDEX_SYMBOL_KIND_OTHER); \ | |
129 | GDB_INDEX_SYMBOL_KIND_SET_VALUE((cu_index), (value)); \ | |
130 | } while (0) | |
131 | ||
132 | /* Ensure we don't use more than the alloted nuber of bits for the CU. */ | |
133 | #define DW2_GDB_INDEX_CU_SET_VALUE(cu_index, value) \ | |
134 | do { \ | |
135 | gdb_assert (((value) & ~GDB_INDEX_CU_MASK) == 0); \ | |
136 | GDB_INDEX_CU_SET_VALUE((cu_index), (value)); \ | |
137 | } while (0) | |
138 | ||
9291a0cd TT |
139 | /* A description of the mapped index. The file format is described in |
140 | a comment by the code that writes the index. */ | |
141 | struct mapped_index | |
142 | { | |
559a7a62 JK |
143 | /* Index data format version. */ |
144 | int version; | |
145 | ||
9291a0cd TT |
146 | /* The total length of the buffer. */ |
147 | off_t total_size; | |
b11b1f88 | 148 | |
9291a0cd TT |
149 | /* A pointer to the address table data. */ |
150 | const gdb_byte *address_table; | |
b11b1f88 | 151 | |
9291a0cd TT |
152 | /* Size of the address table data in bytes. */ |
153 | offset_type address_table_size; | |
b11b1f88 | 154 | |
3876f04e DE |
155 | /* The symbol table, implemented as a hash table. */ |
156 | const offset_type *symbol_table; | |
b11b1f88 | 157 | |
9291a0cd | 158 | /* Size in slots, each slot is 2 offset_types. */ |
3876f04e | 159 | offset_type symbol_table_slots; |
b11b1f88 | 160 | |
9291a0cd TT |
161 | /* A pointer to the constant pool. */ |
162 | const char *constant_pool; | |
163 | }; | |
164 | ||
95554aad TT |
165 | typedef struct dwarf2_per_cu_data *dwarf2_per_cu_ptr; |
166 | DEF_VEC_P (dwarf2_per_cu_ptr); | |
167 | ||
9cdd5dbd DE |
168 | /* Collection of data recorded per objfile. |
169 | This hangs off of dwarf2_objfile_data_key. */ | |
170 | ||
6502dd73 DJ |
171 | struct dwarf2_per_objfile |
172 | { | |
dce234bc PP |
173 | struct dwarf2_section_info info; |
174 | struct dwarf2_section_info abbrev; | |
175 | struct dwarf2_section_info line; | |
dce234bc PP |
176 | struct dwarf2_section_info loc; |
177 | struct dwarf2_section_info macinfo; | |
cf2c3c16 | 178 | struct dwarf2_section_info macro; |
dce234bc PP |
179 | struct dwarf2_section_info str; |
180 | struct dwarf2_section_info ranges; | |
3019eac3 | 181 | struct dwarf2_section_info addr; |
dce234bc PP |
182 | struct dwarf2_section_info frame; |
183 | struct dwarf2_section_info eh_frame; | |
9291a0cd | 184 | struct dwarf2_section_info gdb_index; |
ae038cb0 | 185 | |
8b70b953 TT |
186 | VEC (dwarf2_section_info_def) *types; |
187 | ||
be391dca TT |
188 | /* Back link. */ |
189 | struct objfile *objfile; | |
190 | ||
d467dd73 | 191 | /* Table of all the compilation units. This is used to locate |
10b3939b | 192 | the target compilation unit of a particular reference. */ |
ae038cb0 DJ |
193 | struct dwarf2_per_cu_data **all_comp_units; |
194 | ||
195 | /* The number of compilation units in ALL_COMP_UNITS. */ | |
196 | int n_comp_units; | |
197 | ||
1fd400ff | 198 | /* The number of .debug_types-related CUs. */ |
d467dd73 | 199 | int n_type_units; |
1fd400ff | 200 | |
d467dd73 | 201 | /* The .debug_types-related CUs (TUs). */ |
b4dd5633 | 202 | struct signatured_type **all_type_units; |
1fd400ff | 203 | |
f4dc4d17 DE |
204 | /* The number of entries in all_type_unit_groups. */ |
205 | int n_type_unit_groups; | |
206 | ||
207 | /* Table of type unit groups. | |
208 | This exists to make it easy to iterate over all CUs and TU groups. */ | |
209 | struct type_unit_group **all_type_unit_groups; | |
210 | ||
211 | /* Table of struct type_unit_group objects. | |
212 | The hash key is the DW_AT_stmt_list value. */ | |
213 | htab_t type_unit_groups; | |
72dca2f5 | 214 | |
348e048f DE |
215 | /* A table mapping .debug_types signatures to its signatured_type entry. |
216 | This is NULL if the .debug_types section hasn't been read in yet. */ | |
217 | htab_t signatured_types; | |
218 | ||
f4dc4d17 DE |
219 | /* Type unit statistics, to see how well the scaling improvements |
220 | are doing. */ | |
221 | struct tu_stats | |
222 | { | |
223 | int nr_uniq_abbrev_tables; | |
224 | int nr_symtabs; | |
225 | int nr_symtab_sharers; | |
226 | int nr_stmt_less_type_units; | |
227 | } tu_stats; | |
228 | ||
229 | /* A chain of compilation units that are currently read in, so that | |
230 | they can be freed later. */ | |
231 | struct dwarf2_per_cu_data *read_in_chain; | |
232 | ||
3019eac3 DE |
233 | /* A table mapping DW_AT_dwo_name values to struct dwo_file objects. |
234 | This is NULL if the table hasn't been allocated yet. */ | |
235 | htab_t dwo_files; | |
236 | ||
36586728 TT |
237 | /* The shared '.dwz' file, if one exists. This is used when the |
238 | original data was compressed using 'dwz -m'. */ | |
239 | struct dwz_file *dwz_file; | |
240 | ||
72dca2f5 FR |
241 | /* A flag indicating wether this objfile has a section loaded at a |
242 | VMA of 0. */ | |
243 | int has_section_at_zero; | |
9291a0cd | 244 | |
ae2de4f8 DE |
245 | /* True if we are using the mapped index, |
246 | or we are faking it for OBJF_READNOW's sake. */ | |
9291a0cd TT |
247 | unsigned char using_index; |
248 | ||
ae2de4f8 | 249 | /* The mapped index, or NULL if .gdb_index is missing or not being used. */ |
9291a0cd | 250 | struct mapped_index *index_table; |
98bfdba5 | 251 | |
7b9f3c50 DE |
252 | /* When using index_table, this keeps track of all quick_file_names entries. |
253 | TUs can share line table entries with CUs or other TUs, and there can be | |
254 | a lot more TUs than unique line tables, so we maintain a separate table | |
255 | of all line table entries to support the sharing. */ | |
256 | htab_t quick_file_names_table; | |
257 | ||
98bfdba5 PA |
258 | /* Set during partial symbol reading, to prevent queueing of full |
259 | symbols. */ | |
260 | int reading_partial_symbols; | |
673bfd45 | 261 | |
dee91e82 | 262 | /* Table mapping type DIEs to their struct type *. |
673bfd45 | 263 | This is NULL if not allocated yet. |
dee91e82 DE |
264 | The mapping is done via (CU/TU signature + DIE offset) -> type. */ |
265 | htab_t die_type_hash; | |
95554aad TT |
266 | |
267 | /* The CUs we recently read. */ | |
268 | VEC (dwarf2_per_cu_ptr) *just_read_cus; | |
6502dd73 DJ |
269 | }; |
270 | ||
271 | static struct dwarf2_per_objfile *dwarf2_per_objfile; | |
c906108c | 272 | |
251d32d9 | 273 | /* Default names of the debugging sections. */ |
c906108c | 274 | |
233a11ab CS |
275 | /* Note that if the debugging section has been compressed, it might |
276 | have a name like .zdebug_info. */ | |
277 | ||
9cdd5dbd DE |
278 | static const struct dwarf2_debug_sections dwarf2_elf_names = |
279 | { | |
251d32d9 TG |
280 | { ".debug_info", ".zdebug_info" }, |
281 | { ".debug_abbrev", ".zdebug_abbrev" }, | |
282 | { ".debug_line", ".zdebug_line" }, | |
283 | { ".debug_loc", ".zdebug_loc" }, | |
284 | { ".debug_macinfo", ".zdebug_macinfo" }, | |
cf2c3c16 | 285 | { ".debug_macro", ".zdebug_macro" }, |
251d32d9 TG |
286 | { ".debug_str", ".zdebug_str" }, |
287 | { ".debug_ranges", ".zdebug_ranges" }, | |
288 | { ".debug_types", ".zdebug_types" }, | |
3019eac3 | 289 | { ".debug_addr", ".zdebug_addr" }, |
251d32d9 TG |
290 | { ".debug_frame", ".zdebug_frame" }, |
291 | { ".eh_frame", NULL }, | |
24d3216f TT |
292 | { ".gdb_index", ".zgdb_index" }, |
293 | 23 | |
251d32d9 | 294 | }; |
c906108c | 295 | |
3019eac3 DE |
296 | /* List of DWO sections. */ |
297 | ||
298 | static const struct dwo_section_names | |
299 | { | |
300 | struct dwarf2_section_names abbrev_dwo; | |
301 | struct dwarf2_section_names info_dwo; | |
302 | struct dwarf2_section_names line_dwo; | |
303 | struct dwarf2_section_names loc_dwo; | |
09262596 DE |
304 | struct dwarf2_section_names macinfo_dwo; |
305 | struct dwarf2_section_names macro_dwo; | |
3019eac3 DE |
306 | struct dwarf2_section_names str_dwo; |
307 | struct dwarf2_section_names str_offsets_dwo; | |
308 | struct dwarf2_section_names types_dwo; | |
309 | } | |
310 | dwo_section_names = | |
311 | { | |
312 | { ".debug_abbrev.dwo", ".zdebug_abbrev.dwo" }, | |
313 | { ".debug_info.dwo", ".zdebug_info.dwo" }, | |
314 | { ".debug_line.dwo", ".zdebug_line.dwo" }, | |
315 | { ".debug_loc.dwo", ".zdebug_loc.dwo" }, | |
09262596 DE |
316 | { ".debug_macinfo.dwo", ".zdebug_macinfo.dwo" }, |
317 | { ".debug_macro.dwo", ".zdebug_macro.dwo" }, | |
3019eac3 DE |
318 | { ".debug_str.dwo", ".zdebug_str.dwo" }, |
319 | { ".debug_str_offsets.dwo", ".zdebug_str_offsets.dwo" }, | |
320 | { ".debug_types.dwo", ".zdebug_types.dwo" }, | |
321 | }; | |
322 | ||
c906108c SS |
323 | /* local data types */ |
324 | ||
107d2387 AC |
325 | /* The data in a compilation unit header, after target2host |
326 | translation, looks like this. */ | |
c906108c | 327 | struct comp_unit_head |
a738430d | 328 | { |
c764a876 | 329 | unsigned int length; |
a738430d | 330 | short version; |
a738430d MK |
331 | unsigned char addr_size; |
332 | unsigned char signed_addr_p; | |
b64f50a1 | 333 | sect_offset abbrev_offset; |
57349743 | 334 | |
a738430d MK |
335 | /* Size of file offsets; either 4 or 8. */ |
336 | unsigned int offset_size; | |
57349743 | 337 | |
a738430d MK |
338 | /* Size of the length field; either 4 or 12. */ |
339 | unsigned int initial_length_size; | |
57349743 | 340 | |
a738430d MK |
341 | /* Offset to the first byte of this compilation unit header in the |
342 | .debug_info section, for resolving relative reference dies. */ | |
b64f50a1 | 343 | sect_offset offset; |
57349743 | 344 | |
d00adf39 DE |
345 | /* Offset to first die in this cu from the start of the cu. |
346 | This will be the first byte following the compilation unit header. */ | |
b64f50a1 | 347 | cu_offset first_die_offset; |
a738430d | 348 | }; |
c906108c | 349 | |
3da10d80 KS |
350 | /* Type used for delaying computation of method physnames. |
351 | See comments for compute_delayed_physnames. */ | |
352 | struct delayed_method_info | |
353 | { | |
354 | /* The type to which the method is attached, i.e., its parent class. */ | |
355 | struct type *type; | |
356 | ||
357 | /* The index of the method in the type's function fieldlists. */ | |
358 | int fnfield_index; | |
359 | ||
360 | /* The index of the method in the fieldlist. */ | |
361 | int index; | |
362 | ||
363 | /* The name of the DIE. */ | |
364 | const char *name; | |
365 | ||
366 | /* The DIE associated with this method. */ | |
367 | struct die_info *die; | |
368 | }; | |
369 | ||
370 | typedef struct delayed_method_info delayed_method_info; | |
371 | DEF_VEC_O (delayed_method_info); | |
372 | ||
e7c27a73 DJ |
373 | /* Internal state when decoding a particular compilation unit. */ |
374 | struct dwarf2_cu | |
375 | { | |
376 | /* The objfile containing this compilation unit. */ | |
377 | struct objfile *objfile; | |
378 | ||
d00adf39 | 379 | /* The header of the compilation unit. */ |
e7c27a73 | 380 | struct comp_unit_head header; |
e142c38c | 381 | |
d00adf39 DE |
382 | /* Base address of this compilation unit. */ |
383 | CORE_ADDR base_address; | |
384 | ||
385 | /* Non-zero if base_address has been set. */ | |
386 | int base_known; | |
387 | ||
e142c38c DJ |
388 | /* The language we are debugging. */ |
389 | enum language language; | |
390 | const struct language_defn *language_defn; | |
391 | ||
b0f35d58 DL |
392 | const char *producer; |
393 | ||
e142c38c DJ |
394 | /* The generic symbol table building routines have separate lists for |
395 | file scope symbols and all all other scopes (local scopes). So | |
396 | we need to select the right one to pass to add_symbol_to_list(). | |
397 | We do it by keeping a pointer to the correct list in list_in_scope. | |
398 | ||
399 | FIXME: The original dwarf code just treated the file scope as the | |
400 | first local scope, and all other local scopes as nested local | |
401 | scopes, and worked fine. Check to see if we really need to | |
402 | distinguish these in buildsym.c. */ | |
403 | struct pending **list_in_scope; | |
404 | ||
433df2d4 DE |
405 | /* The abbrev table for this CU. |
406 | Normally this points to the abbrev table in the objfile. | |
407 | But if DWO_UNIT is non-NULL this is the abbrev table in the DWO file. */ | |
408 | struct abbrev_table *abbrev_table; | |
72bf9492 | 409 | |
b64f50a1 JK |
410 | /* Hash table holding all the loaded partial DIEs |
411 | with partial_die->offset.SECT_OFF as hash. */ | |
72bf9492 DJ |
412 | htab_t partial_dies; |
413 | ||
414 | /* Storage for things with the same lifetime as this read-in compilation | |
415 | unit, including partial DIEs. */ | |
416 | struct obstack comp_unit_obstack; | |
417 | ||
ae038cb0 DJ |
418 | /* When multiple dwarf2_cu structures are living in memory, this field |
419 | chains them all together, so that they can be released efficiently. | |
420 | We will probably also want a generation counter so that most-recently-used | |
421 | compilation units are cached... */ | |
422 | struct dwarf2_per_cu_data *read_in_chain; | |
423 | ||
424 | /* Backchain to our per_cu entry if the tree has been built. */ | |
425 | struct dwarf2_per_cu_data *per_cu; | |
426 | ||
427 | /* How many compilation units ago was this CU last referenced? */ | |
428 | int last_used; | |
429 | ||
b64f50a1 JK |
430 | /* A hash table of DIE cu_offset for following references with |
431 | die_info->offset.sect_off as hash. */ | |
51545339 | 432 | htab_t die_hash; |
10b3939b DJ |
433 | |
434 | /* Full DIEs if read in. */ | |
435 | struct die_info *dies; | |
436 | ||
437 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
438 | units referenced by this one. Only set during full symbol processing; | |
439 | partial symbol tables do not have dependencies. */ | |
440 | htab_t dependencies; | |
441 | ||
cb1df416 DJ |
442 | /* Header data from the line table, during full symbol processing. */ |
443 | struct line_header *line_header; | |
444 | ||
3da10d80 KS |
445 | /* A list of methods which need to have physnames computed |
446 | after all type information has been read. */ | |
447 | VEC (delayed_method_info) *method_list; | |
448 | ||
96408a79 SA |
449 | /* To be copied to symtab->call_site_htab. */ |
450 | htab_t call_site_htab; | |
451 | ||
034e5797 DE |
452 | /* Non-NULL if this CU came from a DWO file. |
453 | There is an invariant here that is important to remember: | |
454 | Except for attributes copied from the top level DIE in the "main" | |
455 | (or "stub") file in preparation for reading the DWO file | |
456 | (e.g., DW_AT_GNU_addr_base), we KISS: there is only *one* CU. | |
457 | Either there isn't a DWO file (in which case this is NULL and the point | |
458 | is moot), or there is and either we're not going to read it (in which | |
459 | case this is NULL) or there is and we are reading it (in which case this | |
460 | is non-NULL). */ | |
3019eac3 DE |
461 | struct dwo_unit *dwo_unit; |
462 | ||
463 | /* The DW_AT_addr_base attribute if present, zero otherwise | |
464 | (zero is a valid value though). | |
465 | Note this value comes from the stub CU/TU's DIE. */ | |
466 | ULONGEST addr_base; | |
467 | ||
2e3cf129 DE |
468 | /* The DW_AT_ranges_base attribute if present, zero otherwise |
469 | (zero is a valid value though). | |
470 | Note this value comes from the stub CU/TU's DIE. | |
471 | Also note that the value is zero in the non-DWO case so this value can | |
472 | be used without needing to know whether DWO files are in use or not. */ | |
473 | ULONGEST ranges_base; | |
474 | ||
ae038cb0 DJ |
475 | /* Mark used when releasing cached dies. */ |
476 | unsigned int mark : 1; | |
477 | ||
8be455d7 JK |
478 | /* This CU references .debug_loc. See the symtab->locations_valid field. |
479 | This test is imperfect as there may exist optimized debug code not using | |
480 | any location list and still facing inlining issues if handled as | |
481 | unoptimized code. For a future better test see GCC PR other/32998. */ | |
8be455d7 | 482 | unsigned int has_loclist : 1; |
ba919b58 | 483 | |
685b1105 JK |
484 | /* These cache the results for producer_is_gxx_lt_4_6 and producer_is_icc. |
485 | CHECKED_PRODUCER is set if both PRODUCER_IS_GXX_LT_4_6 and PRODUCER_IS_ICC | |
486 | are valid. This information is cached because profiling CU expansion | |
487 | showed excessive time spent in producer_is_gxx_lt_4_6. */ | |
ba919b58 TT |
488 | unsigned int checked_producer : 1; |
489 | unsigned int producer_is_gxx_lt_4_6 : 1; | |
685b1105 | 490 | unsigned int producer_is_icc : 1; |
e7c27a73 DJ |
491 | }; |
492 | ||
10b3939b DJ |
493 | /* Persistent data held for a compilation unit, even when not |
494 | processing it. We put a pointer to this structure in the | |
28dee7f5 | 495 | read_symtab_private field of the psymtab. */ |
10b3939b | 496 | |
ae038cb0 DJ |
497 | struct dwarf2_per_cu_data |
498 | { | |
36586728 | 499 | /* The start offset and length of this compilation unit. |
45452591 | 500 | NOTE: Unlike comp_unit_head.length, this length includes |
3019eac3 DE |
501 | initial_length_size. |
502 | If the DIE refers to a DWO file, this is always of the original die, | |
503 | not the DWO file. */ | |
b64f50a1 | 504 | sect_offset offset; |
36586728 | 505 | unsigned int length; |
ae038cb0 DJ |
506 | |
507 | /* Flag indicating this compilation unit will be read in before | |
508 | any of the current compilation units are processed. */ | |
c764a876 | 509 | unsigned int queued : 1; |
ae038cb0 | 510 | |
0d99eb77 DE |
511 | /* This flag will be set when reading partial DIEs if we need to load |
512 | absolutely all DIEs for this compilation unit, instead of just the ones | |
513 | we think are interesting. It gets set if we look for a DIE in the | |
5afb4e99 DJ |
514 | hash table and don't find it. */ |
515 | unsigned int load_all_dies : 1; | |
516 | ||
3019eac3 DE |
517 | /* Non-zero if this CU is from .debug_types. */ |
518 | unsigned int is_debug_types : 1; | |
519 | ||
36586728 TT |
520 | /* Non-zero if this CU is from the .dwz file. */ |
521 | unsigned int is_dwz : 1; | |
522 | ||
3019eac3 DE |
523 | /* The section this CU/TU lives in. |
524 | If the DIE refers to a DWO file, this is always the original die, | |
525 | not the DWO file. */ | |
526 | struct dwarf2_section_info *info_or_types_section; | |
348e048f | 527 | |
17ea53c3 JK |
528 | /* Set to non-NULL iff this CU is currently loaded. When it gets freed out |
529 | of the CU cache it gets reset to NULL again. */ | |
ae038cb0 | 530 | struct dwarf2_cu *cu; |
1c379e20 | 531 | |
9cdd5dbd DE |
532 | /* The corresponding objfile. |
533 | Normally we can get the objfile from dwarf2_per_objfile. | |
534 | However we can enter this file with just a "per_cu" handle. */ | |
9291a0cd TT |
535 | struct objfile *objfile; |
536 | ||
537 | /* When using partial symbol tables, the 'psymtab' field is active. | |
538 | Otherwise the 'quick' field is active. */ | |
539 | union | |
540 | { | |
541 | /* The partial symbol table associated with this compilation unit, | |
95554aad | 542 | or NULL for unread partial units. */ |
9291a0cd TT |
543 | struct partial_symtab *psymtab; |
544 | ||
545 | /* Data needed by the "quick" functions. */ | |
546 | struct dwarf2_per_cu_quick_data *quick; | |
547 | } v; | |
95554aad | 548 | |
f4dc4d17 DE |
549 | union |
550 | { | |
551 | /* The CUs we import using DW_TAG_imported_unit. This is filled in | |
552 | while reading psymtabs, used to compute the psymtab dependencies, | |
553 | and then cleared. Then it is filled in again while reading full | |
554 | symbols, and only deleted when the objfile is destroyed. */ | |
555 | VEC (dwarf2_per_cu_ptr) *imported_symtabs; | |
556 | ||
557 | /* Type units are grouped by their DW_AT_stmt_list entry so that they | |
558 | can share them. If this is a TU, this points to the containing | |
559 | symtab. */ | |
560 | struct type_unit_group *type_unit_group; | |
561 | } s; | |
ae038cb0 DJ |
562 | }; |
563 | ||
348e048f DE |
564 | /* Entry in the signatured_types hash table. */ |
565 | ||
566 | struct signatured_type | |
567 | { | |
42e7ad6c DE |
568 | /* The "per_cu" object of this type. |
569 | N.B.: This is the first member so that it's easy to convert pointers | |
570 | between them. */ | |
571 | struct dwarf2_per_cu_data per_cu; | |
572 | ||
3019eac3 | 573 | /* The type's signature. */ |
348e048f DE |
574 | ULONGEST signature; |
575 | ||
3019eac3 DE |
576 | /* Offset in the TU of the type's DIE, as read from the TU header. |
577 | If the definition lives in a DWO file, this value is unusable. */ | |
578 | cu_offset type_offset_in_tu; | |
579 | ||
580 | /* Offset in the section of the type's DIE. | |
581 | If the definition lives in a DWO file, this is the offset in the | |
582 | .debug_types.dwo section. | |
583 | The value is zero until the actual value is known. | |
584 | Zero is otherwise not a valid section offset. */ | |
585 | sect_offset type_offset_in_section; | |
348e048f DE |
586 | }; |
587 | ||
094b34ac DE |
588 | /* A struct that can be used as a hash key for tables based on DW_AT_stmt_list. |
589 | This includes type_unit_group and quick_file_names. */ | |
590 | ||
591 | struct stmt_list_hash | |
592 | { | |
593 | /* The DWO unit this table is from or NULL if there is none. */ | |
594 | struct dwo_unit *dwo_unit; | |
595 | ||
596 | /* Offset in .debug_line or .debug_line.dwo. */ | |
597 | sect_offset line_offset; | |
598 | }; | |
599 | ||
f4dc4d17 DE |
600 | /* Each element of dwarf2_per_objfile->type_unit_groups is a pointer to |
601 | an object of this type. */ | |
602 | ||
603 | struct type_unit_group | |
604 | { | |
605 | /* dwarf2read.c's main "handle" on the symtab. | |
606 | To simplify things we create an artificial CU that "includes" all the | |
607 | type units using this stmt_list so that the rest of the code still has | |
608 | a "per_cu" handle on the symtab. | |
609 | This PER_CU is recognized by having no section. */ | |
610 | #define IS_TYPE_UNIT_GROUP(per_cu) ((per_cu)->info_or_types_section == NULL) | |
094b34ac DE |
611 | struct dwarf2_per_cu_data per_cu; |
612 | ||
613 | union | |
614 | { | |
615 | /* The TUs that share this DW_AT_stmt_list entry. | |
616 | This is added to while parsing type units to build partial symtabs, | |
617 | and is deleted afterwards and not used again. */ | |
618 | VEC (dwarf2_per_cu_ptr) *tus; | |
f4dc4d17 | 619 | |
094b34ac DE |
620 | /* When reading the line table in "quick" functions, we need a real TU. |
621 | Any will do, we know they all share the same DW_AT_stmt_list entry. | |
622 | For simplicity's sake, we pick the first one. */ | |
623 | struct dwarf2_per_cu_data *first_tu; | |
624 | } t; | |
f4dc4d17 DE |
625 | |
626 | /* The primary symtab. | |
094b34ac DE |
627 | Type units in a group needn't all be defined in the same source file, |
628 | so we create an essentially anonymous symtab as the primary symtab. */ | |
f4dc4d17 DE |
629 | struct symtab *primary_symtab; |
630 | ||
094b34ac DE |
631 | /* The data used to construct the hash key. */ |
632 | struct stmt_list_hash hash; | |
f4dc4d17 DE |
633 | |
634 | /* The number of symtabs from the line header. | |
635 | The value here must match line_header.num_file_names. */ | |
636 | unsigned int num_symtabs; | |
637 | ||
638 | /* The symbol tables for this TU (obtained from the files listed in | |
639 | DW_AT_stmt_list). | |
640 | WARNING: The order of entries here must match the order of entries | |
641 | in the line header. After the first TU using this type_unit_group, the | |
642 | line header for the subsequent TUs is recreated from this. This is done | |
643 | because we need to use the same symtabs for each TU using the same | |
644 | DW_AT_stmt_list value. Also note that symtabs may be repeated here, | |
645 | there's no guarantee the line header doesn't have duplicate entries. */ | |
646 | struct symtab **symtabs; | |
647 | }; | |
648 | ||
3019eac3 DE |
649 | /* These sections are what may appear in a "dwo" file. */ |
650 | ||
651 | struct dwo_sections | |
652 | { | |
653 | struct dwarf2_section_info abbrev; | |
654 | struct dwarf2_section_info info; | |
655 | struct dwarf2_section_info line; | |
656 | struct dwarf2_section_info loc; | |
09262596 DE |
657 | struct dwarf2_section_info macinfo; |
658 | struct dwarf2_section_info macro; | |
3019eac3 DE |
659 | struct dwarf2_section_info str; |
660 | struct dwarf2_section_info str_offsets; | |
661 | VEC (dwarf2_section_info_def) *types; | |
662 | }; | |
663 | ||
664 | /* Common bits of DWO CUs/TUs. */ | |
665 | ||
666 | struct dwo_unit | |
667 | { | |
668 | /* Backlink to the containing struct dwo_file. */ | |
669 | struct dwo_file *dwo_file; | |
670 | ||
671 | /* The "id" that distinguishes this CU/TU. | |
672 | .debug_info calls this "dwo_id", .debug_types calls this "signature". | |
673 | Since signatures came first, we stick with it for consistency. */ | |
674 | ULONGEST signature; | |
675 | ||
676 | /* The section this CU/TU lives in, in the DWO file. */ | |
677 | struct dwarf2_section_info *info_or_types_section; | |
678 | ||
679 | /* Same as dwarf2_per_cu_data:{offset,length} but for the DWO section. */ | |
680 | sect_offset offset; | |
681 | unsigned int length; | |
682 | ||
683 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
684 | cu_offset type_offset_in_tu; | |
685 | }; | |
686 | ||
687 | /* Data for one DWO file. */ | |
688 | ||
689 | struct dwo_file | |
690 | { | |
691 | /* The DW_AT_GNU_dwo_name attribute. | |
692 | We don't manage space for this, it's an attribute. */ | |
693 | const char *dwo_name; | |
694 | ||
695 | /* The bfd, when the file is open. Otherwise this is NULL. */ | |
696 | bfd *dwo_bfd; | |
697 | ||
698 | /* Section info for this file. */ | |
699 | struct dwo_sections sections; | |
700 | ||
701 | /* Table of CUs in the file. | |
702 | Each element is a struct dwo_unit. */ | |
703 | htab_t cus; | |
704 | ||
705 | /* Table of TUs in the file. | |
706 | Each element is a struct dwo_unit. */ | |
707 | htab_t tus; | |
708 | }; | |
709 | ||
36586728 TT |
710 | /* This represents a '.dwz' file. */ |
711 | ||
712 | struct dwz_file | |
713 | { | |
714 | /* A dwz file can only contain a few sections. */ | |
715 | struct dwarf2_section_info abbrev; | |
716 | struct dwarf2_section_info info; | |
717 | struct dwarf2_section_info str; | |
718 | struct dwarf2_section_info line; | |
719 | struct dwarf2_section_info macro; | |
2ec9a5e0 | 720 | struct dwarf2_section_info gdb_index; |
36586728 TT |
721 | |
722 | /* The dwz's BFD. */ | |
723 | bfd *dwz_bfd; | |
724 | }; | |
725 | ||
0963b4bd MS |
726 | /* Struct used to pass misc. parameters to read_die_and_children, et |
727 | al. which are used for both .debug_info and .debug_types dies. | |
728 | All parameters here are unchanging for the life of the call. This | |
dee91e82 | 729 | struct exists to abstract away the constant parameters of die reading. */ |
93311388 DE |
730 | |
731 | struct die_reader_specs | |
732 | { | |
dee91e82 | 733 | /* die_section->asection->owner. */ |
93311388 DE |
734 | bfd* abfd; |
735 | ||
736 | /* The CU of the DIE we are parsing. */ | |
737 | struct dwarf2_cu *cu; | |
738 | ||
3019eac3 DE |
739 | /* Non-NULL if reading a DWO file. */ |
740 | struct dwo_file *dwo_file; | |
741 | ||
dee91e82 | 742 | /* The section the die comes from. |
3019eac3 | 743 | This is either .debug_info or .debug_types, or the .dwo variants. */ |
dee91e82 DE |
744 | struct dwarf2_section_info *die_section; |
745 | ||
746 | /* die_section->buffer. */ | |
747 | gdb_byte *buffer; | |
f664829e DE |
748 | |
749 | /* The end of the buffer. */ | |
750 | const gdb_byte *buffer_end; | |
93311388 DE |
751 | }; |
752 | ||
fd820528 | 753 | /* Type of function passed to init_cutu_and_read_dies, et.al. */ |
dee91e82 DE |
754 | typedef void (die_reader_func_ftype) (const struct die_reader_specs *reader, |
755 | gdb_byte *info_ptr, | |
756 | struct die_info *comp_unit_die, | |
757 | int has_children, | |
758 | void *data); | |
759 | ||
debd256d JB |
760 | /* The line number information for a compilation unit (found in the |
761 | .debug_line section) begins with a "statement program header", | |
762 | which contains the following information. */ | |
763 | struct line_header | |
764 | { | |
765 | unsigned int total_length; | |
766 | unsigned short version; | |
767 | unsigned int header_length; | |
768 | unsigned char minimum_instruction_length; | |
2dc7f7b3 | 769 | unsigned char maximum_ops_per_instruction; |
debd256d JB |
770 | unsigned char default_is_stmt; |
771 | int line_base; | |
772 | unsigned char line_range; | |
773 | unsigned char opcode_base; | |
774 | ||
775 | /* standard_opcode_lengths[i] is the number of operands for the | |
776 | standard opcode whose value is i. This means that | |
777 | standard_opcode_lengths[0] is unused, and the last meaningful | |
778 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
779 | unsigned char *standard_opcode_lengths; | |
780 | ||
781 | /* The include_directories table. NOTE! These strings are not | |
782 | allocated with xmalloc; instead, they are pointers into | |
783 | debug_line_buffer. If you try to free them, `free' will get | |
784 | indigestion. */ | |
785 | unsigned int num_include_dirs, include_dirs_size; | |
786 | char **include_dirs; | |
787 | ||
788 | /* The file_names table. NOTE! These strings are not allocated | |
789 | with xmalloc; instead, they are pointers into debug_line_buffer. | |
790 | Don't try to free them directly. */ | |
791 | unsigned int num_file_names, file_names_size; | |
792 | struct file_entry | |
c906108c | 793 | { |
debd256d JB |
794 | char *name; |
795 | unsigned int dir_index; | |
796 | unsigned int mod_time; | |
797 | unsigned int length; | |
aaa75496 | 798 | int included_p; /* Non-zero if referenced by the Line Number Program. */ |
cb1df416 | 799 | struct symtab *symtab; /* The associated symbol table, if any. */ |
debd256d JB |
800 | } *file_names; |
801 | ||
802 | /* The start and end of the statement program following this | |
6502dd73 | 803 | header. These point into dwarf2_per_objfile->line_buffer. */ |
fe1b8b76 | 804 | gdb_byte *statement_program_start, *statement_program_end; |
debd256d | 805 | }; |
c906108c SS |
806 | |
807 | /* When we construct a partial symbol table entry we only | |
0963b4bd | 808 | need this much information. */ |
c906108c SS |
809 | struct partial_die_info |
810 | { | |
72bf9492 | 811 | /* Offset of this DIE. */ |
b64f50a1 | 812 | sect_offset offset; |
72bf9492 DJ |
813 | |
814 | /* DWARF-2 tag for this DIE. */ | |
815 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
816 | ||
72bf9492 DJ |
817 | /* Assorted flags describing the data found in this DIE. */ |
818 | unsigned int has_children : 1; | |
819 | unsigned int is_external : 1; | |
820 | unsigned int is_declaration : 1; | |
821 | unsigned int has_type : 1; | |
822 | unsigned int has_specification : 1; | |
823 | unsigned int has_pc_info : 1; | |
481860b3 | 824 | unsigned int may_be_inlined : 1; |
72bf9492 DJ |
825 | |
826 | /* Flag set if the SCOPE field of this structure has been | |
827 | computed. */ | |
828 | unsigned int scope_set : 1; | |
829 | ||
fa4028e9 JB |
830 | /* Flag set if the DIE has a byte_size attribute. */ |
831 | unsigned int has_byte_size : 1; | |
832 | ||
98bfdba5 PA |
833 | /* Flag set if any of the DIE's children are template arguments. */ |
834 | unsigned int has_template_arguments : 1; | |
835 | ||
abc72ce4 DE |
836 | /* Flag set if fixup_partial_die has been called on this die. */ |
837 | unsigned int fixup_called : 1; | |
838 | ||
36586728 TT |
839 | /* Flag set if DW_TAG_imported_unit uses DW_FORM_GNU_ref_alt. */ |
840 | unsigned int is_dwz : 1; | |
841 | ||
842 | /* Flag set if spec_offset uses DW_FORM_GNU_ref_alt. */ | |
843 | unsigned int spec_is_dwz : 1; | |
844 | ||
72bf9492 | 845 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 846 | sometimes a default name for unnamed DIEs. */ |
c906108c | 847 | char *name; |
72bf9492 | 848 | |
abc72ce4 DE |
849 | /* The linkage name, if present. */ |
850 | const char *linkage_name; | |
851 | ||
72bf9492 DJ |
852 | /* The scope to prepend to our children. This is generally |
853 | allocated on the comp_unit_obstack, so will disappear | |
854 | when this compilation unit leaves the cache. */ | |
855 | char *scope; | |
856 | ||
95554aad TT |
857 | /* Some data associated with the partial DIE. The tag determines |
858 | which field is live. */ | |
859 | union | |
860 | { | |
861 | /* The location description associated with this DIE, if any. */ | |
862 | struct dwarf_block *locdesc; | |
863 | /* The offset of an import, for DW_TAG_imported_unit. */ | |
864 | sect_offset offset; | |
865 | } d; | |
72bf9492 DJ |
866 | |
867 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
c906108c SS |
868 | CORE_ADDR lowpc; |
869 | CORE_ADDR highpc; | |
72bf9492 | 870 | |
93311388 | 871 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 872 | DW_AT_sibling, if any. */ |
abc72ce4 DE |
873 | /* NOTE: This member isn't strictly necessary, read_partial_die could |
874 | return DW_AT_sibling values to its caller load_partial_dies. */ | |
fe1b8b76 | 875 | gdb_byte *sibling; |
72bf9492 DJ |
876 | |
877 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
878 | DW_AT_specification (or DW_AT_abstract_origin or | |
879 | DW_AT_extension). */ | |
b64f50a1 | 880 | sect_offset spec_offset; |
72bf9492 DJ |
881 | |
882 | /* Pointers to this DIE's parent, first child, and next sibling, | |
883 | if any. */ | |
884 | struct partial_die_info *die_parent, *die_child, *die_sibling; | |
c906108c SS |
885 | }; |
886 | ||
0963b4bd | 887 | /* This data structure holds the information of an abbrev. */ |
c906108c SS |
888 | struct abbrev_info |
889 | { | |
890 | unsigned int number; /* number identifying abbrev */ | |
891 | enum dwarf_tag tag; /* dwarf tag */ | |
f3dd6933 DJ |
892 | unsigned short has_children; /* boolean */ |
893 | unsigned short num_attrs; /* number of attributes */ | |
c906108c SS |
894 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ |
895 | struct abbrev_info *next; /* next in chain */ | |
896 | }; | |
897 | ||
898 | struct attr_abbrev | |
899 | { | |
9d25dd43 DE |
900 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
901 | ENUM_BITFIELD(dwarf_form) form : 16; | |
c906108c SS |
902 | }; |
903 | ||
433df2d4 DE |
904 | /* Size of abbrev_table.abbrev_hash_table. */ |
905 | #define ABBREV_HASH_SIZE 121 | |
906 | ||
907 | /* Top level data structure to contain an abbreviation table. */ | |
908 | ||
909 | struct abbrev_table | |
910 | { | |
f4dc4d17 DE |
911 | /* Where the abbrev table came from. |
912 | This is used as a sanity check when the table is used. */ | |
433df2d4 DE |
913 | sect_offset offset; |
914 | ||
915 | /* Storage for the abbrev table. */ | |
916 | struct obstack abbrev_obstack; | |
917 | ||
918 | /* Hash table of abbrevs. | |
919 | This is an array of size ABBREV_HASH_SIZE allocated in abbrev_obstack. | |
920 | It could be statically allocated, but the previous code didn't so we | |
921 | don't either. */ | |
922 | struct abbrev_info **abbrevs; | |
923 | }; | |
924 | ||
0963b4bd | 925 | /* Attributes have a name and a value. */ |
b60c80d6 DJ |
926 | struct attribute |
927 | { | |
9d25dd43 | 928 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
8285870a JK |
929 | ENUM_BITFIELD(dwarf_form) form : 15; |
930 | ||
931 | /* Has DW_STRING already been updated by dwarf2_canonicalize_name? This | |
932 | field should be in u.str (existing only for DW_STRING) but it is kept | |
933 | here for better struct attribute alignment. */ | |
934 | unsigned int string_is_canonical : 1; | |
935 | ||
b60c80d6 DJ |
936 | union |
937 | { | |
938 | char *str; | |
939 | struct dwarf_block *blk; | |
43bbcdc2 PH |
940 | ULONGEST unsnd; |
941 | LONGEST snd; | |
b60c80d6 | 942 | CORE_ADDR addr; |
348e048f | 943 | struct signatured_type *signatured_type; |
b60c80d6 DJ |
944 | } |
945 | u; | |
946 | }; | |
947 | ||
0963b4bd | 948 | /* This data structure holds a complete die structure. */ |
c906108c SS |
949 | struct die_info |
950 | { | |
76815b17 DE |
951 | /* DWARF-2 tag for this DIE. */ |
952 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
953 | ||
954 | /* Number of attributes */ | |
98bfdba5 PA |
955 | unsigned char num_attrs; |
956 | ||
957 | /* True if we're presently building the full type name for the | |
958 | type derived from this DIE. */ | |
959 | unsigned char building_fullname : 1; | |
76815b17 DE |
960 | |
961 | /* Abbrev number */ | |
962 | unsigned int abbrev; | |
963 | ||
93311388 | 964 | /* Offset in .debug_info or .debug_types section. */ |
b64f50a1 | 965 | sect_offset offset; |
78ba4af6 JB |
966 | |
967 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
968 | points to this die's parent; CHILD points to the first child of | |
969 | this node; and all the children of a given node are chained | |
4950bc1c | 970 | together via their SIBLING fields. */ |
639d11d3 DC |
971 | struct die_info *child; /* Its first child, if any. */ |
972 | struct die_info *sibling; /* Its next sibling, if any. */ | |
973 | struct die_info *parent; /* Its parent, if any. */ | |
c906108c | 974 | |
b60c80d6 DJ |
975 | /* An array of attributes, with NUM_ATTRS elements. There may be |
976 | zero, but it's not common and zero-sized arrays are not | |
977 | sufficiently portable C. */ | |
978 | struct attribute attrs[1]; | |
c906108c SS |
979 | }; |
980 | ||
0963b4bd | 981 | /* Get at parts of an attribute structure. */ |
c906108c SS |
982 | |
983 | #define DW_STRING(attr) ((attr)->u.str) | |
8285870a | 984 | #define DW_STRING_IS_CANONICAL(attr) ((attr)->string_is_canonical) |
c906108c SS |
985 | #define DW_UNSND(attr) ((attr)->u.unsnd) |
986 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
987 | #define DW_SND(attr) ((attr)->u.snd) | |
988 | #define DW_ADDR(attr) ((attr)->u.addr) | |
348e048f | 989 | #define DW_SIGNATURED_TYPE(attr) ((attr)->u.signatured_type) |
c906108c | 990 | |
0963b4bd | 991 | /* Blocks are a bunch of untyped bytes. */ |
c906108c SS |
992 | struct dwarf_block |
993 | { | |
56eb65bd | 994 | size_t size; |
1d6edc3c JK |
995 | |
996 | /* Valid only if SIZE is not zero. */ | |
fe1b8b76 | 997 | gdb_byte *data; |
c906108c SS |
998 | }; |
999 | ||
c906108c SS |
1000 | #ifndef ATTR_ALLOC_CHUNK |
1001 | #define ATTR_ALLOC_CHUNK 4 | |
1002 | #endif | |
1003 | ||
c906108c SS |
1004 | /* Allocate fields for structs, unions and enums in this size. */ |
1005 | #ifndef DW_FIELD_ALLOC_CHUNK | |
1006 | #define DW_FIELD_ALLOC_CHUNK 4 | |
1007 | #endif | |
1008 | ||
c906108c SS |
1009 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
1010 | but this would require a corresponding change in unpack_field_as_long | |
1011 | and friends. */ | |
1012 | static int bits_per_byte = 8; | |
1013 | ||
1014 | /* The routines that read and process dies for a C struct or C++ class | |
1015 | pass lists of data member fields and lists of member function fields | |
1016 | in an instance of a field_info structure, as defined below. */ | |
1017 | struct field_info | |
c5aa993b | 1018 | { |
0963b4bd | 1019 | /* List of data member and baseclasses fields. */ |
c5aa993b JM |
1020 | struct nextfield |
1021 | { | |
1022 | struct nextfield *next; | |
1023 | int accessibility; | |
1024 | int virtuality; | |
1025 | struct field field; | |
1026 | } | |
7d0ccb61 | 1027 | *fields, *baseclasses; |
c906108c | 1028 | |
7d0ccb61 | 1029 | /* Number of fields (including baseclasses). */ |
c5aa993b | 1030 | int nfields; |
c906108c | 1031 | |
c5aa993b JM |
1032 | /* Number of baseclasses. */ |
1033 | int nbaseclasses; | |
c906108c | 1034 | |
c5aa993b JM |
1035 | /* Set if the accesibility of one of the fields is not public. */ |
1036 | int non_public_fields; | |
c906108c | 1037 | |
c5aa993b JM |
1038 | /* Member function fields array, entries are allocated in the order they |
1039 | are encountered in the object file. */ | |
1040 | struct nextfnfield | |
1041 | { | |
1042 | struct nextfnfield *next; | |
1043 | struct fn_field fnfield; | |
1044 | } | |
1045 | *fnfields; | |
c906108c | 1046 | |
c5aa993b JM |
1047 | /* Member function fieldlist array, contains name of possibly overloaded |
1048 | member function, number of overloaded member functions and a pointer | |
1049 | to the head of the member function field chain. */ | |
1050 | struct fnfieldlist | |
1051 | { | |
1052 | char *name; | |
1053 | int length; | |
1054 | struct nextfnfield *head; | |
1055 | } | |
1056 | *fnfieldlists; | |
c906108c | 1057 | |
c5aa993b JM |
1058 | /* Number of entries in the fnfieldlists array. */ |
1059 | int nfnfields; | |
98751a41 JK |
1060 | |
1061 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
1062 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
1063 | struct typedef_field_list | |
1064 | { | |
1065 | struct typedef_field field; | |
1066 | struct typedef_field_list *next; | |
1067 | } | |
1068 | *typedef_field_list; | |
1069 | unsigned typedef_field_list_count; | |
c5aa993b | 1070 | }; |
c906108c | 1071 | |
10b3939b DJ |
1072 | /* One item on the queue of compilation units to read in full symbols |
1073 | for. */ | |
1074 | struct dwarf2_queue_item | |
1075 | { | |
1076 | struct dwarf2_per_cu_data *per_cu; | |
95554aad | 1077 | enum language pretend_language; |
10b3939b DJ |
1078 | struct dwarf2_queue_item *next; |
1079 | }; | |
1080 | ||
1081 | /* The current queue. */ | |
1082 | static struct dwarf2_queue_item *dwarf2_queue, *dwarf2_queue_tail; | |
1083 | ||
ae038cb0 DJ |
1084 | /* Loaded secondary compilation units are kept in memory until they |
1085 | have not been referenced for the processing of this many | |
1086 | compilation units. Set this to zero to disable caching. Cache | |
1087 | sizes of up to at least twenty will improve startup time for | |
1088 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
1089 | static int dwarf2_max_cache_age = 5; | |
920d2a44 AC |
1090 | static void |
1091 | show_dwarf2_max_cache_age (struct ui_file *file, int from_tty, | |
1092 | struct cmd_list_element *c, const char *value) | |
1093 | { | |
3e43a32a MS |
1094 | fprintf_filtered (file, _("The upper bound on the age of cached " |
1095 | "dwarf2 compilation units is %s.\n"), | |
920d2a44 AC |
1096 | value); |
1097 | } | |
1098 | ||
ae038cb0 | 1099 | |
0963b4bd | 1100 | /* Various complaints about symbol reading that don't abort the process. */ |
c906108c | 1101 | |
4d3c2250 KB |
1102 | static void |
1103 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
2e276125 | 1104 | { |
4d3c2250 | 1105 | complaint (&symfile_complaints, |
e2e0b3e5 | 1106 | _("statement list doesn't fit in .debug_line section")); |
4d3c2250 KB |
1107 | } |
1108 | ||
25e43795 DJ |
1109 | static void |
1110 | dwarf2_debug_line_missing_file_complaint (void) | |
1111 | { | |
1112 | complaint (&symfile_complaints, | |
1113 | _(".debug_line section has line data without a file")); | |
1114 | } | |
1115 | ||
59205f5a JB |
1116 | static void |
1117 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
1118 | { | |
1119 | complaint (&symfile_complaints, | |
3e43a32a MS |
1120 | _(".debug_line section has line " |
1121 | "program sequence without an end")); | |
59205f5a JB |
1122 | } |
1123 | ||
4d3c2250 KB |
1124 | static void |
1125 | dwarf2_complex_location_expr_complaint (void) | |
2e276125 | 1126 | { |
e2e0b3e5 | 1127 | complaint (&symfile_complaints, _("location expression too complex")); |
4d3c2250 KB |
1128 | } |
1129 | ||
4d3c2250 KB |
1130 | static void |
1131 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
1132 | int arg3) | |
2e276125 | 1133 | { |
4d3c2250 | 1134 | complaint (&symfile_complaints, |
3e43a32a MS |
1135 | _("const value length mismatch for '%s', got %d, expected %d"), |
1136 | arg1, arg2, arg3); | |
4d3c2250 KB |
1137 | } |
1138 | ||
1139 | static void | |
f664829e | 1140 | dwarf2_section_buffer_overflow_complaint (struct dwarf2_section_info *section) |
2e276125 | 1141 | { |
4d3c2250 | 1142 | complaint (&symfile_complaints, |
f664829e DE |
1143 | _("debug info runs off end of %s section" |
1144 | " [in module %s]"), | |
1145 | section->asection->name, | |
1146 | bfd_get_filename (section->asection->owner)); | |
4d3c2250 KB |
1147 | } |
1148 | ||
1149 | static void | |
1150 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
8e19ed76 | 1151 | { |
4d3c2250 | 1152 | complaint (&symfile_complaints, |
3e43a32a MS |
1153 | _("macro debug info contains a " |
1154 | "malformed macro definition:\n`%s'"), | |
4d3c2250 KB |
1155 | arg1); |
1156 | } | |
1157 | ||
1158 | static void | |
1159 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
8b2dbe47 | 1160 | { |
4d3c2250 | 1161 | complaint (&symfile_complaints, |
3e43a32a MS |
1162 | _("invalid attribute class or form for '%s' in '%s'"), |
1163 | arg1, arg2); | |
4d3c2250 | 1164 | } |
c906108c | 1165 | |
c906108c SS |
1166 | /* local function prototypes */ |
1167 | ||
4efb68b1 | 1168 | static void dwarf2_locate_sections (bfd *, asection *, void *); |
c906108c | 1169 | |
aaa75496 JB |
1170 | static void dwarf2_create_include_psymtab (char *, struct partial_symtab *, |
1171 | struct objfile *); | |
1172 | ||
918dd910 JK |
1173 | static void dwarf2_find_base_address (struct die_info *die, |
1174 | struct dwarf2_cu *cu); | |
1175 | ||
c67a9c90 | 1176 | static void dwarf2_build_psymtabs_hard (struct objfile *); |
c906108c | 1177 | |
72bf9492 DJ |
1178 | static void scan_partial_symbols (struct partial_die_info *, |
1179 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 1180 | int, struct dwarf2_cu *); |
c906108c | 1181 | |
72bf9492 DJ |
1182 | static void add_partial_symbol (struct partial_die_info *, |
1183 | struct dwarf2_cu *); | |
63d06c5c | 1184 | |
72bf9492 DJ |
1185 | static void add_partial_namespace (struct partial_die_info *pdi, |
1186 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1187 | int need_pc, struct dwarf2_cu *cu); |
63d06c5c | 1188 | |
5d7cb8df JK |
1189 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
1190 | CORE_ADDR *highpc, int need_pc, | |
1191 | struct dwarf2_cu *cu); | |
1192 | ||
72bf9492 DJ |
1193 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
1194 | struct dwarf2_cu *cu); | |
91c24f0a | 1195 | |
bc30ff58 JB |
1196 | static void add_partial_subprogram (struct partial_die_info *pdi, |
1197 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1198 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 1199 | |
a14ed312 | 1200 | static void dwarf2_psymtab_to_symtab (struct partial_symtab *); |
c906108c | 1201 | |
a14ed312 | 1202 | static void psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 1203 | |
433df2d4 DE |
1204 | static struct abbrev_info *abbrev_table_lookup_abbrev |
1205 | (const struct abbrev_table *, unsigned int); | |
1206 | ||
1207 | static struct abbrev_table *abbrev_table_read_table | |
1208 | (struct dwarf2_section_info *, sect_offset); | |
1209 | ||
1210 | static void abbrev_table_free (struct abbrev_table *); | |
1211 | ||
f4dc4d17 DE |
1212 | static void abbrev_table_free_cleanup (void *); |
1213 | ||
dee91e82 DE |
1214 | static void dwarf2_read_abbrevs (struct dwarf2_cu *, |
1215 | struct dwarf2_section_info *); | |
c906108c | 1216 | |
f3dd6933 | 1217 | static void dwarf2_free_abbrev_table (void *); |
c906108c | 1218 | |
6caca83c CC |
1219 | static unsigned int peek_abbrev_code (bfd *, gdb_byte *); |
1220 | ||
dee91e82 DE |
1221 | static struct partial_die_info *load_partial_dies |
1222 | (const struct die_reader_specs *, gdb_byte *, int); | |
72bf9492 | 1223 | |
dee91e82 DE |
1224 | static gdb_byte *read_partial_die (const struct die_reader_specs *, |
1225 | struct partial_die_info *, | |
1226 | struct abbrev_info *, | |
1227 | unsigned int, | |
1228 | gdb_byte *); | |
c906108c | 1229 | |
36586728 | 1230 | static struct partial_die_info *find_partial_die (sect_offset, int, |
10b3939b | 1231 | struct dwarf2_cu *); |
72bf9492 DJ |
1232 | |
1233 | static void fixup_partial_die (struct partial_die_info *, | |
1234 | struct dwarf2_cu *); | |
1235 | ||
dee91e82 DE |
1236 | static gdb_byte *read_attribute (const struct die_reader_specs *, |
1237 | struct attribute *, struct attr_abbrev *, | |
1238 | gdb_byte *); | |
a8329558 | 1239 | |
fe1b8b76 | 1240 | static unsigned int read_1_byte (bfd *, gdb_byte *); |
c906108c | 1241 | |
fe1b8b76 | 1242 | static int read_1_signed_byte (bfd *, gdb_byte *); |
c906108c | 1243 | |
fe1b8b76 | 1244 | static unsigned int read_2_bytes (bfd *, gdb_byte *); |
c906108c | 1245 | |
fe1b8b76 | 1246 | static unsigned int read_4_bytes (bfd *, gdb_byte *); |
c906108c | 1247 | |
93311388 | 1248 | static ULONGEST read_8_bytes (bfd *, gdb_byte *); |
c906108c | 1249 | |
fe1b8b76 | 1250 | static CORE_ADDR read_address (bfd *, gdb_byte *ptr, struct dwarf2_cu *, |
891d2f0b | 1251 | unsigned int *); |
c906108c | 1252 | |
c764a876 DE |
1253 | static LONGEST read_initial_length (bfd *, gdb_byte *, unsigned int *); |
1254 | ||
1255 | static LONGEST read_checked_initial_length_and_offset | |
1256 | (bfd *, gdb_byte *, const struct comp_unit_head *, | |
1257 | unsigned int *, unsigned int *); | |
613e1657 | 1258 | |
fe1b8b76 | 1259 | static LONGEST read_offset (bfd *, gdb_byte *, const struct comp_unit_head *, |
c764a876 DE |
1260 | unsigned int *); |
1261 | ||
1262 | static LONGEST read_offset_1 (bfd *, gdb_byte *, unsigned int); | |
613e1657 | 1263 | |
f4dc4d17 DE |
1264 | static sect_offset read_abbrev_offset (struct dwarf2_section_info *, |
1265 | sect_offset); | |
1266 | ||
fe1b8b76 | 1267 | static gdb_byte *read_n_bytes (bfd *, gdb_byte *, unsigned int); |
c906108c | 1268 | |
9b1c24c8 | 1269 | static char *read_direct_string (bfd *, gdb_byte *, unsigned int *); |
c906108c | 1270 | |
fe1b8b76 JB |
1271 | static char *read_indirect_string (bfd *, gdb_byte *, |
1272 | const struct comp_unit_head *, | |
1273 | unsigned int *); | |
4bdf3d34 | 1274 | |
36586728 TT |
1275 | static char *read_indirect_string_from_dwz (struct dwz_file *, LONGEST); |
1276 | ||
12df843f | 1277 | static ULONGEST read_unsigned_leb128 (bfd *, gdb_byte *, unsigned int *); |
c906108c | 1278 | |
12df843f | 1279 | static LONGEST read_signed_leb128 (bfd *, gdb_byte *, unsigned int *); |
c906108c | 1280 | |
3019eac3 DE |
1281 | static CORE_ADDR read_addr_index_from_leb128 (struct dwarf2_cu *, gdb_byte *, |
1282 | unsigned int *); | |
1283 | ||
1284 | static char *read_str_index (const struct die_reader_specs *reader, | |
1285 | struct dwarf2_cu *cu, ULONGEST str_index); | |
1286 | ||
e142c38c | 1287 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 1288 | |
e142c38c DJ |
1289 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
1290 | struct dwarf2_cu *); | |
c906108c | 1291 | |
348e048f | 1292 | static struct attribute *dwarf2_attr_no_follow (struct die_info *, |
45e58e77 | 1293 | unsigned int); |
348e048f | 1294 | |
05cf31d1 JB |
1295 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
1296 | struct dwarf2_cu *cu); | |
1297 | ||
e142c38c | 1298 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1299 | |
e142c38c | 1300 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1301 | struct dwarf2_cu **); |
63d06c5c | 1302 | |
debd256d JB |
1303 | static void free_line_header (struct line_header *lh); |
1304 | ||
aaa75496 JB |
1305 | static void add_file_name (struct line_header *, char *, unsigned int, |
1306 | unsigned int, unsigned int); | |
1307 | ||
3019eac3 DE |
1308 | static struct line_header *dwarf_decode_line_header (unsigned int offset, |
1309 | struct dwarf2_cu *cu); | |
debd256d | 1310 | |
f3f5162e DE |
1311 | static void dwarf_decode_lines (struct line_header *, const char *, |
1312 | struct dwarf2_cu *, struct partial_symtab *, | |
1313 | int); | |
c906108c | 1314 | |
72b9f47f | 1315 | static void dwarf2_start_subfile (char *, const char *, const char *); |
c906108c | 1316 | |
f4dc4d17 DE |
1317 | static void dwarf2_start_symtab (struct dwarf2_cu *, |
1318 | char *, char *, CORE_ADDR); | |
1319 | ||
a14ed312 | 1320 | static struct symbol *new_symbol (struct die_info *, struct type *, |
e7c27a73 | 1321 | struct dwarf2_cu *); |
c906108c | 1322 | |
34eaf542 TT |
1323 | static struct symbol *new_symbol_full (struct die_info *, struct type *, |
1324 | struct dwarf2_cu *, struct symbol *); | |
1325 | ||
a14ed312 | 1326 | static void dwarf2_const_value (struct attribute *, struct symbol *, |
e7c27a73 | 1327 | struct dwarf2_cu *); |
c906108c | 1328 | |
98bfdba5 PA |
1329 | static void dwarf2_const_value_attr (struct attribute *attr, |
1330 | struct type *type, | |
1331 | const char *name, | |
1332 | struct obstack *obstack, | |
12df843f | 1333 | struct dwarf2_cu *cu, LONGEST *value, |
98bfdba5 PA |
1334 | gdb_byte **bytes, |
1335 | struct dwarf2_locexpr_baton **baton); | |
2df3850c | 1336 | |
e7c27a73 | 1337 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1338 | |
b4ba55a1 JB |
1339 | static int need_gnat_info (struct dwarf2_cu *); |
1340 | ||
3e43a32a MS |
1341 | static struct type *die_descriptive_type (struct die_info *, |
1342 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1343 | |
1344 | static void set_descriptive_type (struct type *, struct die_info *, | |
1345 | struct dwarf2_cu *); | |
1346 | ||
e7c27a73 DJ |
1347 | static struct type *die_containing_type (struct die_info *, |
1348 | struct dwarf2_cu *); | |
c906108c | 1349 | |
673bfd45 DE |
1350 | static struct type *lookup_die_type (struct die_info *, struct attribute *, |
1351 | struct dwarf2_cu *); | |
c906108c | 1352 | |
f792889a | 1353 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1354 | |
673bfd45 DE |
1355 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1356 | ||
0d5cff50 | 1357 | static const char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1358 | |
6e70227d | 1359 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1360 | const char *suffix, int physname, |
1361 | struct dwarf2_cu *cu); | |
63d06c5c | 1362 | |
e7c27a73 | 1363 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1364 | |
348e048f DE |
1365 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1366 | ||
e7c27a73 | 1367 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1368 | |
e7c27a73 | 1369 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1370 | |
96408a79 SA |
1371 | static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu); |
1372 | ||
ff013f42 JK |
1373 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
1374 | struct dwarf2_cu *, struct partial_symtab *); | |
1375 | ||
a14ed312 | 1376 | static int dwarf2_get_pc_bounds (struct die_info *, |
d85a05f0 DJ |
1377 | CORE_ADDR *, CORE_ADDR *, struct dwarf2_cu *, |
1378 | struct partial_symtab *); | |
c906108c | 1379 | |
fae299cd DC |
1380 | static void get_scope_pc_bounds (struct die_info *, |
1381 | CORE_ADDR *, CORE_ADDR *, | |
1382 | struct dwarf2_cu *); | |
1383 | ||
801e3a5b JB |
1384 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
1385 | CORE_ADDR, struct dwarf2_cu *); | |
1386 | ||
a14ed312 | 1387 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1388 | struct dwarf2_cu *); |
c906108c | 1389 | |
a14ed312 | 1390 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1391 | struct type *, struct dwarf2_cu *); |
c906108c | 1392 | |
a14ed312 | 1393 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1394 | struct die_info *, struct type *, |
e7c27a73 | 1395 | struct dwarf2_cu *); |
c906108c | 1396 | |
a14ed312 | 1397 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1398 | struct type *, |
1399 | struct dwarf2_cu *); | |
c906108c | 1400 | |
134d01f1 | 1401 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1402 | |
e7c27a73 | 1403 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1404 | |
e7c27a73 | 1405 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1406 | |
5d7cb8df JK |
1407 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1408 | ||
27aa8d6a SW |
1409 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1410 | ||
f55ee35c JK |
1411 | static struct type *read_module_type (struct die_info *die, |
1412 | struct dwarf2_cu *cu); | |
1413 | ||
38d518c9 | 1414 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1415 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1416 | |
134d01f1 | 1417 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1418 | |
e7c27a73 | 1419 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 1420 | |
6e70227d | 1421 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1422 | struct dwarf2_cu *); |
1423 | ||
dee91e82 | 1424 | static struct die_info *read_die_and_children (const struct die_reader_specs *, |
93311388 | 1425 | gdb_byte *info_ptr, |
fe1b8b76 | 1426 | gdb_byte **new_info_ptr, |
639d11d3 DC |
1427 | struct die_info *parent); |
1428 | ||
dee91e82 | 1429 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *, |
93311388 | 1430 | gdb_byte *info_ptr, |
fe1b8b76 | 1431 | gdb_byte **new_info_ptr, |
639d11d3 DC |
1432 | struct die_info *parent); |
1433 | ||
3019eac3 DE |
1434 | static gdb_byte *read_full_die_1 (const struct die_reader_specs *, |
1435 | struct die_info **, gdb_byte *, int *, int); | |
1436 | ||
dee91e82 DE |
1437 | static gdb_byte *read_full_die (const struct die_reader_specs *, |
1438 | struct die_info **, gdb_byte *, int *); | |
93311388 | 1439 | |
e7c27a73 | 1440 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1441 | |
71c25dea TT |
1442 | static char *dwarf2_canonicalize_name (char *, struct dwarf2_cu *, |
1443 | struct obstack *); | |
1444 | ||
e142c38c | 1445 | static char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1446 | |
98bfdba5 PA |
1447 | static const char *dwarf2_full_name (char *name, |
1448 | struct die_info *die, | |
1449 | struct dwarf2_cu *cu); | |
1450 | ||
e142c38c | 1451 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1452 | struct dwarf2_cu **); |
9219021c | 1453 | |
f39c6ffd | 1454 | static const char *dwarf_tag_name (unsigned int); |
c906108c | 1455 | |
f39c6ffd | 1456 | static const char *dwarf_attr_name (unsigned int); |
c906108c | 1457 | |
f39c6ffd | 1458 | static const char *dwarf_form_name (unsigned int); |
c906108c | 1459 | |
a14ed312 | 1460 | static char *dwarf_bool_name (unsigned int); |
c906108c | 1461 | |
f39c6ffd | 1462 | static const char *dwarf_type_encoding_name (unsigned int); |
c906108c | 1463 | |
f9aca02d | 1464 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 1465 | |
d97bc12b DE |
1466 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1467 | ||
1468 | static void dump_die_for_error (struct die_info *); | |
1469 | ||
1470 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1471 | struct die_info *); | |
c906108c | 1472 | |
d97bc12b | 1473 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1474 | |
51545339 | 1475 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1476 | struct dwarf2_cu *); |
c906108c | 1477 | |
93311388 DE |
1478 | static int is_ref_attr (struct attribute *); |
1479 | ||
b64f50a1 | 1480 | static sect_offset dwarf2_get_ref_die_offset (struct attribute *); |
c906108c | 1481 | |
43bbcdc2 | 1482 | static LONGEST dwarf2_get_attr_constant_value (struct attribute *, int); |
a02abb62 | 1483 | |
348e048f DE |
1484 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
1485 | struct attribute *, | |
1486 | struct dwarf2_cu **); | |
1487 | ||
10b3939b DJ |
1488 | static struct die_info *follow_die_ref (struct die_info *, |
1489 | struct attribute *, | |
f2f0e013 | 1490 | struct dwarf2_cu **); |
c906108c | 1491 | |
348e048f DE |
1492 | static struct die_info *follow_die_sig (struct die_info *, |
1493 | struct attribute *, | |
1494 | struct dwarf2_cu **); | |
1495 | ||
6c83ed52 TT |
1496 | static struct signatured_type *lookup_signatured_type_at_offset |
1497 | (struct objfile *objfile, | |
b64f50a1 | 1498 | struct dwarf2_section_info *section, sect_offset offset); |
6c83ed52 | 1499 | |
e5fe5e75 | 1500 | static void load_full_type_unit (struct dwarf2_per_cu_data *per_cu); |
348e048f | 1501 | |
52dc124a | 1502 | static void read_signatured_type (struct signatured_type *); |
348e048f | 1503 | |
f4dc4d17 | 1504 | static struct type_unit_group *get_type_unit_group |
094b34ac | 1505 | (struct dwarf2_cu *, struct attribute *); |
f4dc4d17 DE |
1506 | |
1507 | static void build_type_unit_groups (die_reader_func_ftype *, void *); | |
1508 | ||
c906108c SS |
1509 | /* memory allocation interface */ |
1510 | ||
7b5a2f43 | 1511 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1512 | |
b60c80d6 | 1513 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1514 | |
09262596 DE |
1515 | static void dwarf_decode_macros (struct dwarf2_cu *, unsigned int, |
1516 | char *, int); | |
2e276125 | 1517 | |
8e19ed76 PS |
1518 | static int attr_form_is_block (struct attribute *); |
1519 | ||
3690dd37 JB |
1520 | static int attr_form_is_section_offset (struct attribute *); |
1521 | ||
1522 | static int attr_form_is_constant (struct attribute *); | |
1523 | ||
8cf6f0b1 TT |
1524 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
1525 | struct dwarf2_loclist_baton *baton, | |
1526 | struct attribute *attr); | |
1527 | ||
93e7bd98 DJ |
1528 | static void dwarf2_symbol_mark_computed (struct attribute *attr, |
1529 | struct symbol *sym, | |
1530 | struct dwarf2_cu *cu); | |
4c2df51b | 1531 | |
dee91e82 DE |
1532 | static gdb_byte *skip_one_die (const struct die_reader_specs *reader, |
1533 | gdb_byte *info_ptr, | |
1534 | struct abbrev_info *abbrev); | |
4bb7a0a7 | 1535 | |
72bf9492 DJ |
1536 | static void free_stack_comp_unit (void *); |
1537 | ||
72bf9492 DJ |
1538 | static hashval_t partial_die_hash (const void *item); |
1539 | ||
1540 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1541 | ||
ae038cb0 | 1542 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
36586728 | 1543 | (sect_offset offset, unsigned int offset_in_dwz, struct objfile *objfile); |
ae038cb0 | 1544 | |
9816fde3 | 1545 | static void init_one_comp_unit (struct dwarf2_cu *cu, |
23745b47 | 1546 | struct dwarf2_per_cu_data *per_cu); |
9816fde3 JK |
1547 | |
1548 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, | |
95554aad TT |
1549 | struct die_info *comp_unit_die, |
1550 | enum language pretend_language); | |
93311388 | 1551 | |
68dc6402 | 1552 | static void free_heap_comp_unit (void *); |
ae038cb0 DJ |
1553 | |
1554 | static void free_cached_comp_units (void *); | |
1555 | ||
1556 | static void age_cached_comp_units (void); | |
1557 | ||
dee91e82 | 1558 | static void free_one_cached_comp_unit (struct dwarf2_per_cu_data *); |
ae038cb0 | 1559 | |
f792889a DJ |
1560 | static struct type *set_die_type (struct die_info *, struct type *, |
1561 | struct dwarf2_cu *); | |
1c379e20 | 1562 | |
ae038cb0 DJ |
1563 | static void create_all_comp_units (struct objfile *); |
1564 | ||
0e50663e | 1565 | static int create_all_type_units (struct objfile *); |
1fd400ff | 1566 | |
95554aad TT |
1567 | static void load_full_comp_unit (struct dwarf2_per_cu_data *, |
1568 | enum language); | |
10b3939b | 1569 | |
95554aad TT |
1570 | static void process_full_comp_unit (struct dwarf2_per_cu_data *, |
1571 | enum language); | |
10b3939b | 1572 | |
f4dc4d17 DE |
1573 | static void process_full_type_unit (struct dwarf2_per_cu_data *, |
1574 | enum language); | |
1575 | ||
10b3939b DJ |
1576 | static void dwarf2_add_dependence (struct dwarf2_cu *, |
1577 | struct dwarf2_per_cu_data *); | |
1578 | ||
ae038cb0 DJ |
1579 | static void dwarf2_mark (struct dwarf2_cu *); |
1580 | ||
1581 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1582 | ||
b64f50a1 | 1583 | static struct type *get_die_type_at_offset (sect_offset, |
673bfd45 DE |
1584 | struct dwarf2_per_cu_data *per_cu); |
1585 | ||
f792889a | 1586 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1587 | |
9291a0cd TT |
1588 | static void dwarf2_release_queue (void *dummy); |
1589 | ||
95554aad TT |
1590 | static void queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
1591 | enum language pretend_language); | |
1592 | ||
1593 | static int maybe_queue_comp_unit (struct dwarf2_cu *this_cu, | |
1594 | struct dwarf2_per_cu_data *per_cu, | |
1595 | enum language pretend_language); | |
9291a0cd | 1596 | |
a0f42c21 | 1597 | static void process_queue (void); |
9291a0cd TT |
1598 | |
1599 | static void find_file_and_directory (struct die_info *die, | |
1600 | struct dwarf2_cu *cu, | |
1601 | char **name, char **comp_dir); | |
1602 | ||
1603 | static char *file_full_name (int file, struct line_header *lh, | |
1604 | const char *comp_dir); | |
1605 | ||
36586728 TT |
1606 | static gdb_byte *read_and_check_comp_unit_head |
1607 | (struct comp_unit_head *header, | |
1608 | struct dwarf2_section_info *section, | |
1609 | struct dwarf2_section_info *abbrev_section, gdb_byte *info_ptr, | |
1610 | int is_debug_types_section); | |
1611 | ||
fd820528 | 1612 | static void init_cutu_and_read_dies |
f4dc4d17 DE |
1613 | (struct dwarf2_per_cu_data *this_cu, struct abbrev_table *abbrev_table, |
1614 | int use_existing_cu, int keep, | |
3019eac3 DE |
1615 | die_reader_func_ftype *die_reader_func, void *data); |
1616 | ||
dee91e82 DE |
1617 | static void init_cutu_and_read_dies_simple |
1618 | (struct dwarf2_per_cu_data *this_cu, | |
1619 | die_reader_func_ftype *die_reader_func, void *data); | |
9291a0cd | 1620 | |
673bfd45 | 1621 | static htab_t allocate_signatured_type_table (struct objfile *objfile); |
1fd400ff | 1622 | |
3019eac3 DE |
1623 | static htab_t allocate_dwo_unit_table (struct objfile *objfile); |
1624 | ||
1625 | static struct dwo_unit *lookup_dwo_comp_unit | |
1626 | (struct dwarf2_per_cu_data *, char *, const char *, ULONGEST); | |
1627 | ||
1628 | static struct dwo_unit *lookup_dwo_type_unit | |
1629 | (struct signatured_type *, char *, const char *); | |
1630 | ||
1631 | static void free_dwo_file_cleanup (void *); | |
1632 | ||
95554aad TT |
1633 | static void process_cu_includes (void); |
1634 | ||
9291a0cd TT |
1635 | #if WORDS_BIGENDIAN |
1636 | ||
1637 | /* Convert VALUE between big- and little-endian. */ | |
1638 | static offset_type | |
1639 | byte_swap (offset_type value) | |
1640 | { | |
1641 | offset_type result; | |
1642 | ||
1643 | result = (value & 0xff) << 24; | |
1644 | result |= (value & 0xff00) << 8; | |
1645 | result |= (value & 0xff0000) >> 8; | |
1646 | result |= (value & 0xff000000) >> 24; | |
1647 | return result; | |
1648 | } | |
1649 | ||
1650 | #define MAYBE_SWAP(V) byte_swap (V) | |
1651 | ||
1652 | #else | |
1653 | #define MAYBE_SWAP(V) (V) | |
1654 | #endif /* WORDS_BIGENDIAN */ | |
1655 | ||
1656 | /* The suffix for an index file. */ | |
1657 | #define INDEX_SUFFIX ".gdb-index" | |
1658 | ||
3da10d80 KS |
1659 | static const char *dwarf2_physname (char *name, struct die_info *die, |
1660 | struct dwarf2_cu *cu); | |
1661 | ||
c906108c | 1662 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
1663 | information and return true if we have enough to do something. |
1664 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
1665 | ELF names are used. */ | |
c906108c SS |
1666 | |
1667 | int | |
251d32d9 TG |
1668 | dwarf2_has_info (struct objfile *objfile, |
1669 | const struct dwarf2_debug_sections *names) | |
c906108c | 1670 | { |
be391dca TT |
1671 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); |
1672 | if (!dwarf2_per_objfile) | |
1673 | { | |
1674 | /* Initialize per-objfile state. */ | |
1675 | struct dwarf2_per_objfile *data | |
1676 | = obstack_alloc (&objfile->objfile_obstack, sizeof (*data)); | |
9a619af0 | 1677 | |
be391dca TT |
1678 | memset (data, 0, sizeof (*data)); |
1679 | set_objfile_data (objfile, dwarf2_objfile_data_key, data); | |
1680 | dwarf2_per_objfile = data; | |
6502dd73 | 1681 | |
251d32d9 TG |
1682 | bfd_map_over_sections (objfile->obfd, dwarf2_locate_sections, |
1683 | (void *) names); | |
be391dca TT |
1684 | dwarf2_per_objfile->objfile = objfile; |
1685 | } | |
1686 | return (dwarf2_per_objfile->info.asection != NULL | |
1687 | && dwarf2_per_objfile->abbrev.asection != NULL); | |
c906108c SS |
1688 | } |
1689 | ||
251d32d9 TG |
1690 | /* When loading sections, we look either for uncompressed section or for |
1691 | compressed section names. */ | |
233a11ab CS |
1692 | |
1693 | static int | |
251d32d9 TG |
1694 | section_is_p (const char *section_name, |
1695 | const struct dwarf2_section_names *names) | |
233a11ab | 1696 | { |
251d32d9 TG |
1697 | if (names->normal != NULL |
1698 | && strcmp (section_name, names->normal) == 0) | |
1699 | return 1; | |
1700 | if (names->compressed != NULL | |
1701 | && strcmp (section_name, names->compressed) == 0) | |
1702 | return 1; | |
1703 | return 0; | |
233a11ab CS |
1704 | } |
1705 | ||
c906108c SS |
1706 | /* This function is mapped across the sections and remembers the |
1707 | offset and size of each of the debugging sections we are interested | |
1708 | in. */ | |
1709 | ||
1710 | static void | |
251d32d9 | 1711 | dwarf2_locate_sections (bfd *abfd, asection *sectp, void *vnames) |
c906108c | 1712 | { |
251d32d9 | 1713 | const struct dwarf2_debug_sections *names; |
dc7650b8 | 1714 | flagword aflag = bfd_get_section_flags (abfd, sectp); |
251d32d9 TG |
1715 | |
1716 | if (vnames == NULL) | |
1717 | names = &dwarf2_elf_names; | |
1718 | else | |
1719 | names = (const struct dwarf2_debug_sections *) vnames; | |
1720 | ||
dc7650b8 JK |
1721 | if ((aflag & SEC_HAS_CONTENTS) == 0) |
1722 | { | |
1723 | } | |
1724 | else if (section_is_p (sectp->name, &names->info)) | |
c906108c | 1725 | { |
dce234bc PP |
1726 | dwarf2_per_objfile->info.asection = sectp; |
1727 | dwarf2_per_objfile->info.size = bfd_get_section_size (sectp); | |
c906108c | 1728 | } |
251d32d9 | 1729 | else if (section_is_p (sectp->name, &names->abbrev)) |
c906108c | 1730 | { |
dce234bc PP |
1731 | dwarf2_per_objfile->abbrev.asection = sectp; |
1732 | dwarf2_per_objfile->abbrev.size = bfd_get_section_size (sectp); | |
c906108c | 1733 | } |
251d32d9 | 1734 | else if (section_is_p (sectp->name, &names->line)) |
c906108c | 1735 | { |
dce234bc PP |
1736 | dwarf2_per_objfile->line.asection = sectp; |
1737 | dwarf2_per_objfile->line.size = bfd_get_section_size (sectp); | |
c906108c | 1738 | } |
251d32d9 | 1739 | else if (section_is_p (sectp->name, &names->loc)) |
c906108c | 1740 | { |
dce234bc PP |
1741 | dwarf2_per_objfile->loc.asection = sectp; |
1742 | dwarf2_per_objfile->loc.size = bfd_get_section_size (sectp); | |
c906108c | 1743 | } |
251d32d9 | 1744 | else if (section_is_p (sectp->name, &names->macinfo)) |
c906108c | 1745 | { |
dce234bc PP |
1746 | dwarf2_per_objfile->macinfo.asection = sectp; |
1747 | dwarf2_per_objfile->macinfo.size = bfd_get_section_size (sectp); | |
c906108c | 1748 | } |
cf2c3c16 TT |
1749 | else if (section_is_p (sectp->name, &names->macro)) |
1750 | { | |
1751 | dwarf2_per_objfile->macro.asection = sectp; | |
1752 | dwarf2_per_objfile->macro.size = bfd_get_section_size (sectp); | |
1753 | } | |
251d32d9 | 1754 | else if (section_is_p (sectp->name, &names->str)) |
c906108c | 1755 | { |
dce234bc PP |
1756 | dwarf2_per_objfile->str.asection = sectp; |
1757 | dwarf2_per_objfile->str.size = bfd_get_section_size (sectp); | |
c906108c | 1758 | } |
3019eac3 DE |
1759 | else if (section_is_p (sectp->name, &names->addr)) |
1760 | { | |
1761 | dwarf2_per_objfile->addr.asection = sectp; | |
1762 | dwarf2_per_objfile->addr.size = bfd_get_section_size (sectp); | |
1763 | } | |
251d32d9 | 1764 | else if (section_is_p (sectp->name, &names->frame)) |
b6af0555 | 1765 | { |
dce234bc PP |
1766 | dwarf2_per_objfile->frame.asection = sectp; |
1767 | dwarf2_per_objfile->frame.size = bfd_get_section_size (sectp); | |
b6af0555 | 1768 | } |
251d32d9 | 1769 | else if (section_is_p (sectp->name, &names->eh_frame)) |
b6af0555 | 1770 | { |
dc7650b8 JK |
1771 | dwarf2_per_objfile->eh_frame.asection = sectp; |
1772 | dwarf2_per_objfile->eh_frame.size = bfd_get_section_size (sectp); | |
b6af0555 | 1773 | } |
251d32d9 | 1774 | else if (section_is_p (sectp->name, &names->ranges)) |
af34e669 | 1775 | { |
dce234bc PP |
1776 | dwarf2_per_objfile->ranges.asection = sectp; |
1777 | dwarf2_per_objfile->ranges.size = bfd_get_section_size (sectp); | |
af34e669 | 1778 | } |
251d32d9 | 1779 | else if (section_is_p (sectp->name, &names->types)) |
348e048f | 1780 | { |
8b70b953 TT |
1781 | struct dwarf2_section_info type_section; |
1782 | ||
1783 | memset (&type_section, 0, sizeof (type_section)); | |
1784 | type_section.asection = sectp; | |
1785 | type_section.size = bfd_get_section_size (sectp); | |
1786 | ||
1787 | VEC_safe_push (dwarf2_section_info_def, dwarf2_per_objfile->types, | |
1788 | &type_section); | |
348e048f | 1789 | } |
251d32d9 | 1790 | else if (section_is_p (sectp->name, &names->gdb_index)) |
9291a0cd TT |
1791 | { |
1792 | dwarf2_per_objfile->gdb_index.asection = sectp; | |
1793 | dwarf2_per_objfile->gdb_index.size = bfd_get_section_size (sectp); | |
1794 | } | |
dce234bc | 1795 | |
72dca2f5 FR |
1796 | if ((bfd_get_section_flags (abfd, sectp) & SEC_LOAD) |
1797 | && bfd_section_vma (abfd, sectp) == 0) | |
1798 | dwarf2_per_objfile->has_section_at_zero = 1; | |
c906108c SS |
1799 | } |
1800 | ||
fceca515 DE |
1801 | /* A helper function that decides whether a section is empty, |
1802 | or not present. */ | |
9e0ac564 TT |
1803 | |
1804 | static int | |
1805 | dwarf2_section_empty_p (struct dwarf2_section_info *info) | |
1806 | { | |
1807 | return info->asection == NULL || info->size == 0; | |
1808 | } | |
1809 | ||
3019eac3 DE |
1810 | /* Read the contents of the section INFO. |
1811 | OBJFILE is the main object file, but not necessarily the file where | |
1812 | the section comes from. E.g., for DWO files INFO->asection->owner | |
1813 | is the bfd of the DWO file. | |
dce234bc | 1814 | If the section is compressed, uncompress it before returning. */ |
c906108c | 1815 | |
dce234bc PP |
1816 | static void |
1817 | dwarf2_read_section (struct objfile *objfile, struct dwarf2_section_info *info) | |
c906108c | 1818 | { |
dce234bc | 1819 | asection *sectp = info->asection; |
3019eac3 | 1820 | bfd *abfd; |
dce234bc PP |
1821 | gdb_byte *buf, *retbuf; |
1822 | unsigned char header[4]; | |
c906108c | 1823 | |
be391dca TT |
1824 | if (info->readin) |
1825 | return; | |
dce234bc | 1826 | info->buffer = NULL; |
be391dca | 1827 | info->readin = 1; |
188dd5d6 | 1828 | |
9e0ac564 | 1829 | if (dwarf2_section_empty_p (info)) |
dce234bc | 1830 | return; |
c906108c | 1831 | |
3019eac3 DE |
1832 | abfd = sectp->owner; |
1833 | ||
4bf44c1c TT |
1834 | /* If the section has relocations, we must read it ourselves. |
1835 | Otherwise we attach it to the BFD. */ | |
1836 | if ((sectp->flags & SEC_RELOC) == 0) | |
dce234bc | 1837 | { |
4bf44c1c | 1838 | const gdb_byte *bytes = gdb_bfd_map_section (sectp, &info->size); |
dce234bc | 1839 | |
4bf44c1c TT |
1840 | /* We have to cast away const here for historical reasons. |
1841 | Fixing dwarf2read to be const-correct would be quite nice. */ | |
1842 | info->buffer = (gdb_byte *) bytes; | |
1843 | return; | |
dce234bc | 1844 | } |
dce234bc | 1845 | |
4bf44c1c TT |
1846 | buf = obstack_alloc (&objfile->objfile_obstack, info->size); |
1847 | info->buffer = buf; | |
dce234bc PP |
1848 | |
1849 | /* When debugging .o files, we may need to apply relocations; see | |
1850 | http://sourceware.org/ml/gdb-patches/2002-04/msg00136.html . | |
1851 | We never compress sections in .o files, so we only need to | |
1852 | try this when the section is not compressed. */ | |
ac8035ab | 1853 | retbuf = symfile_relocate_debug_section (objfile, sectp, buf); |
dce234bc PP |
1854 | if (retbuf != NULL) |
1855 | { | |
1856 | info->buffer = retbuf; | |
1857 | return; | |
1858 | } | |
1859 | ||
1860 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 | |
1861 | || bfd_bread (buf, info->size, abfd) != info->size) | |
1862 | error (_("Dwarf Error: Can't read DWARF data from '%s'"), | |
1863 | bfd_get_filename (abfd)); | |
1864 | } | |
1865 | ||
9e0ac564 TT |
1866 | /* A helper function that returns the size of a section in a safe way. |
1867 | If you are positive that the section has been read before using the | |
1868 | size, then it is safe to refer to the dwarf2_section_info object's | |
1869 | "size" field directly. In other cases, you must call this | |
1870 | function, because for compressed sections the size field is not set | |
1871 | correctly until the section has been read. */ | |
1872 | ||
1873 | static bfd_size_type | |
1874 | dwarf2_section_size (struct objfile *objfile, | |
1875 | struct dwarf2_section_info *info) | |
1876 | { | |
1877 | if (!info->readin) | |
1878 | dwarf2_read_section (objfile, info); | |
1879 | return info->size; | |
1880 | } | |
1881 | ||
dce234bc | 1882 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 1883 | SECTION_NAME. */ |
af34e669 | 1884 | |
dce234bc | 1885 | void |
3017a003 TG |
1886 | dwarf2_get_section_info (struct objfile *objfile, |
1887 | enum dwarf2_section_enum sect, | |
dce234bc PP |
1888 | asection **sectp, gdb_byte **bufp, |
1889 | bfd_size_type *sizep) | |
1890 | { | |
1891 | struct dwarf2_per_objfile *data | |
1892 | = objfile_data (objfile, dwarf2_objfile_data_key); | |
1893 | struct dwarf2_section_info *info; | |
a3b2a86b TT |
1894 | |
1895 | /* We may see an objfile without any DWARF, in which case we just | |
1896 | return nothing. */ | |
1897 | if (data == NULL) | |
1898 | { | |
1899 | *sectp = NULL; | |
1900 | *bufp = NULL; | |
1901 | *sizep = 0; | |
1902 | return; | |
1903 | } | |
3017a003 TG |
1904 | switch (sect) |
1905 | { | |
1906 | case DWARF2_DEBUG_FRAME: | |
1907 | info = &data->frame; | |
1908 | break; | |
1909 | case DWARF2_EH_FRAME: | |
1910 | info = &data->eh_frame; | |
1911 | break; | |
1912 | default: | |
1913 | gdb_assert_not_reached ("unexpected section"); | |
1914 | } | |
dce234bc | 1915 | |
9e0ac564 | 1916 | dwarf2_read_section (objfile, info); |
dce234bc PP |
1917 | |
1918 | *sectp = info->asection; | |
1919 | *bufp = info->buffer; | |
1920 | *sizep = info->size; | |
1921 | } | |
1922 | ||
36586728 TT |
1923 | /* A helper function to find the sections for a .dwz file. */ |
1924 | ||
1925 | static void | |
1926 | locate_dwz_sections (bfd *abfd, asection *sectp, void *arg) | |
1927 | { | |
1928 | struct dwz_file *dwz_file = arg; | |
1929 | ||
1930 | /* Note that we only support the standard ELF names, because .dwz | |
1931 | is ELF-only (at the time of writing). */ | |
1932 | if (section_is_p (sectp->name, &dwarf2_elf_names.abbrev)) | |
1933 | { | |
1934 | dwz_file->abbrev.asection = sectp; | |
1935 | dwz_file->abbrev.size = bfd_get_section_size (sectp); | |
1936 | } | |
1937 | else if (section_is_p (sectp->name, &dwarf2_elf_names.info)) | |
1938 | { | |
1939 | dwz_file->info.asection = sectp; | |
1940 | dwz_file->info.size = bfd_get_section_size (sectp); | |
1941 | } | |
1942 | else if (section_is_p (sectp->name, &dwarf2_elf_names.str)) | |
1943 | { | |
1944 | dwz_file->str.asection = sectp; | |
1945 | dwz_file->str.size = bfd_get_section_size (sectp); | |
1946 | } | |
1947 | else if (section_is_p (sectp->name, &dwarf2_elf_names.line)) | |
1948 | { | |
1949 | dwz_file->line.asection = sectp; | |
1950 | dwz_file->line.size = bfd_get_section_size (sectp); | |
1951 | } | |
1952 | else if (section_is_p (sectp->name, &dwarf2_elf_names.macro)) | |
1953 | { | |
1954 | dwz_file->macro.asection = sectp; | |
1955 | dwz_file->macro.size = bfd_get_section_size (sectp); | |
1956 | } | |
2ec9a5e0 TT |
1957 | else if (section_is_p (sectp->name, &dwarf2_elf_names.gdb_index)) |
1958 | { | |
1959 | dwz_file->gdb_index.asection = sectp; | |
1960 | dwz_file->gdb_index.size = bfd_get_section_size (sectp); | |
1961 | } | |
36586728 TT |
1962 | } |
1963 | ||
1964 | /* Open the separate '.dwz' debug file, if needed. Error if the file | |
1965 | cannot be found. */ | |
1966 | ||
1967 | static struct dwz_file * | |
1968 | dwarf2_get_dwz_file (void) | |
1969 | { | |
1970 | bfd *abfd, *dwz_bfd; | |
1971 | asection *section; | |
1972 | gdb_byte *data; | |
1973 | struct cleanup *cleanup; | |
1974 | const char *filename; | |
1975 | struct dwz_file *result; | |
1976 | ||
1977 | if (dwarf2_per_objfile->dwz_file != NULL) | |
1978 | return dwarf2_per_objfile->dwz_file; | |
1979 | ||
1980 | abfd = dwarf2_per_objfile->objfile->obfd; | |
1981 | section = bfd_get_section_by_name (abfd, ".gnu_debugaltlink"); | |
1982 | if (section == NULL) | |
1983 | error (_("could not find '.gnu_debugaltlink' section")); | |
1984 | if (!bfd_malloc_and_get_section (abfd, section, &data)) | |
1985 | error (_("could not read '.gnu_debugaltlink' section: %s"), | |
1986 | bfd_errmsg (bfd_get_error ())); | |
1987 | cleanup = make_cleanup (xfree, data); | |
1988 | ||
1989 | filename = data; | |
1990 | if (!IS_ABSOLUTE_PATH (filename)) | |
1991 | { | |
1992 | char *abs = gdb_realpath (dwarf2_per_objfile->objfile->name); | |
1993 | char *rel; | |
1994 | ||
1995 | make_cleanup (xfree, abs); | |
1996 | abs = ldirname (abs); | |
1997 | make_cleanup (xfree, abs); | |
1998 | ||
1999 | rel = concat (abs, SLASH_STRING, filename, (char *) NULL); | |
2000 | make_cleanup (xfree, rel); | |
2001 | filename = rel; | |
2002 | } | |
2003 | ||
2004 | /* The format is just a NUL-terminated file name, followed by the | |
2005 | build-id. For now, though, we ignore the build-id. */ | |
2006 | dwz_bfd = gdb_bfd_open (filename, gnutarget, -1); | |
2007 | if (dwz_bfd == NULL) | |
2008 | error (_("could not read '%s': %s"), filename, | |
2009 | bfd_errmsg (bfd_get_error ())); | |
2010 | ||
2011 | if (!bfd_check_format (dwz_bfd, bfd_object)) | |
2012 | { | |
2013 | gdb_bfd_unref (dwz_bfd); | |
2014 | error (_("file '%s' was not usable: %s"), filename, | |
2015 | bfd_errmsg (bfd_get_error ())); | |
2016 | } | |
2017 | ||
2018 | result = OBSTACK_ZALLOC (&dwarf2_per_objfile->objfile->objfile_obstack, | |
2019 | struct dwz_file); | |
2020 | result->dwz_bfd = dwz_bfd; | |
2021 | ||
2022 | bfd_map_over_sections (dwz_bfd, locate_dwz_sections, result); | |
2023 | ||
2024 | do_cleanups (cleanup); | |
2025 | ||
2026 | return result; | |
2027 | } | |
9291a0cd | 2028 | \f |
7b9f3c50 DE |
2029 | /* DWARF quick_symbols_functions support. */ |
2030 | ||
2031 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
2032 | unique line tables, so we maintain a separate table of all .debug_line | |
2033 | derived entries to support the sharing. | |
2034 | All the quick functions need is the list of file names. We discard the | |
2035 | line_header when we're done and don't need to record it here. */ | |
2036 | struct quick_file_names | |
2037 | { | |
094b34ac DE |
2038 | /* The data used to construct the hash key. */ |
2039 | struct stmt_list_hash hash; | |
7b9f3c50 DE |
2040 | |
2041 | /* The number of entries in file_names, real_names. */ | |
2042 | unsigned int num_file_names; | |
2043 | ||
2044 | /* The file names from the line table, after being run through | |
2045 | file_full_name. */ | |
2046 | const char **file_names; | |
2047 | ||
2048 | /* The file names from the line table after being run through | |
2049 | gdb_realpath. These are computed lazily. */ | |
2050 | const char **real_names; | |
2051 | }; | |
2052 | ||
2053 | /* When using the index (and thus not using psymtabs), each CU has an | |
2054 | object of this type. This is used to hold information needed by | |
2055 | the various "quick" methods. */ | |
2056 | struct dwarf2_per_cu_quick_data | |
2057 | { | |
2058 | /* The file table. This can be NULL if there was no file table | |
2059 | or it's currently not read in. | |
2060 | NOTE: This points into dwarf2_per_objfile->quick_file_names_table. */ | |
2061 | struct quick_file_names *file_names; | |
2062 | ||
2063 | /* The corresponding symbol table. This is NULL if symbols for this | |
2064 | CU have not yet been read. */ | |
2065 | struct symtab *symtab; | |
2066 | ||
2067 | /* A temporary mark bit used when iterating over all CUs in | |
2068 | expand_symtabs_matching. */ | |
2069 | unsigned int mark : 1; | |
2070 | ||
2071 | /* True if we've tried to read the file table and found there isn't one. | |
2072 | There will be no point in trying to read it again next time. */ | |
2073 | unsigned int no_file_data : 1; | |
2074 | }; | |
2075 | ||
094b34ac DE |
2076 | /* Utility hash function for a stmt_list_hash. */ |
2077 | ||
2078 | static hashval_t | |
2079 | hash_stmt_list_entry (const struct stmt_list_hash *stmt_list_hash) | |
2080 | { | |
2081 | hashval_t v = 0; | |
2082 | ||
2083 | if (stmt_list_hash->dwo_unit != NULL) | |
2084 | v += (uintptr_t) stmt_list_hash->dwo_unit->dwo_file; | |
2085 | v += stmt_list_hash->line_offset.sect_off; | |
2086 | return v; | |
2087 | } | |
2088 | ||
2089 | /* Utility equality function for a stmt_list_hash. */ | |
2090 | ||
2091 | static int | |
2092 | eq_stmt_list_entry (const struct stmt_list_hash *lhs, | |
2093 | const struct stmt_list_hash *rhs) | |
2094 | { | |
2095 | if ((lhs->dwo_unit != NULL) != (rhs->dwo_unit != NULL)) | |
2096 | return 0; | |
2097 | if (lhs->dwo_unit != NULL | |
2098 | && lhs->dwo_unit->dwo_file != rhs->dwo_unit->dwo_file) | |
2099 | return 0; | |
2100 | ||
2101 | return lhs->line_offset.sect_off == rhs->line_offset.sect_off; | |
2102 | } | |
2103 | ||
7b9f3c50 DE |
2104 | /* Hash function for a quick_file_names. */ |
2105 | ||
2106 | static hashval_t | |
2107 | hash_file_name_entry (const void *e) | |
2108 | { | |
2109 | const struct quick_file_names *file_data = e; | |
2110 | ||
094b34ac | 2111 | return hash_stmt_list_entry (&file_data->hash); |
7b9f3c50 DE |
2112 | } |
2113 | ||
2114 | /* Equality function for a quick_file_names. */ | |
2115 | ||
2116 | static int | |
2117 | eq_file_name_entry (const void *a, const void *b) | |
2118 | { | |
2119 | const struct quick_file_names *ea = a; | |
2120 | const struct quick_file_names *eb = b; | |
2121 | ||
094b34ac | 2122 | return eq_stmt_list_entry (&ea->hash, &eb->hash); |
7b9f3c50 DE |
2123 | } |
2124 | ||
2125 | /* Delete function for a quick_file_names. */ | |
2126 | ||
2127 | static void | |
2128 | delete_file_name_entry (void *e) | |
2129 | { | |
2130 | struct quick_file_names *file_data = e; | |
2131 | int i; | |
2132 | ||
2133 | for (i = 0; i < file_data->num_file_names; ++i) | |
2134 | { | |
2135 | xfree ((void*) file_data->file_names[i]); | |
2136 | if (file_data->real_names) | |
2137 | xfree ((void*) file_data->real_names[i]); | |
2138 | } | |
2139 | ||
2140 | /* The space for the struct itself lives on objfile_obstack, | |
2141 | so we don't free it here. */ | |
2142 | } | |
2143 | ||
2144 | /* Create a quick_file_names hash table. */ | |
2145 | ||
2146 | static htab_t | |
2147 | create_quick_file_names_table (unsigned int nr_initial_entries) | |
2148 | { | |
2149 | return htab_create_alloc (nr_initial_entries, | |
2150 | hash_file_name_entry, eq_file_name_entry, | |
2151 | delete_file_name_entry, xcalloc, xfree); | |
2152 | } | |
9291a0cd | 2153 | |
918dd910 JK |
2154 | /* Read in PER_CU->CU. This function is unrelated to symtabs, symtab would |
2155 | have to be created afterwards. You should call age_cached_comp_units after | |
2156 | processing PER_CU->CU. dw2_setup must have been already called. */ | |
2157 | ||
2158 | static void | |
2159 | load_cu (struct dwarf2_per_cu_data *per_cu) | |
2160 | { | |
3019eac3 | 2161 | if (per_cu->is_debug_types) |
e5fe5e75 | 2162 | load_full_type_unit (per_cu); |
918dd910 | 2163 | else |
95554aad | 2164 | load_full_comp_unit (per_cu, language_minimal); |
918dd910 | 2165 | |
918dd910 | 2166 | gdb_assert (per_cu->cu != NULL); |
2dc860c0 DE |
2167 | |
2168 | dwarf2_find_base_address (per_cu->cu->dies, per_cu->cu); | |
918dd910 JK |
2169 | } |
2170 | ||
a0f42c21 | 2171 | /* Read in the symbols for PER_CU. */ |
2fdf6df6 | 2172 | |
9291a0cd | 2173 | static void |
a0f42c21 | 2174 | dw2_do_instantiate_symtab (struct dwarf2_per_cu_data *per_cu) |
9291a0cd TT |
2175 | { |
2176 | struct cleanup *back_to; | |
2177 | ||
f4dc4d17 DE |
2178 | /* Skip type_unit_groups, reading the type units they contain |
2179 | is handled elsewhere. */ | |
2180 | if (IS_TYPE_UNIT_GROUP (per_cu)) | |
2181 | return; | |
2182 | ||
9291a0cd TT |
2183 | back_to = make_cleanup (dwarf2_release_queue, NULL); |
2184 | ||
95554aad TT |
2185 | if (dwarf2_per_objfile->using_index |
2186 | ? per_cu->v.quick->symtab == NULL | |
2187 | : (per_cu->v.psymtab == NULL || !per_cu->v.psymtab->readin)) | |
2188 | { | |
2189 | queue_comp_unit (per_cu, language_minimal); | |
2190 | load_cu (per_cu); | |
2191 | } | |
9291a0cd | 2192 | |
a0f42c21 | 2193 | process_queue (); |
9291a0cd TT |
2194 | |
2195 | /* Age the cache, releasing compilation units that have not | |
2196 | been used recently. */ | |
2197 | age_cached_comp_units (); | |
2198 | ||
2199 | do_cleanups (back_to); | |
2200 | } | |
2201 | ||
2202 | /* Ensure that the symbols for PER_CU have been read in. OBJFILE is | |
2203 | the objfile from which this CU came. Returns the resulting symbol | |
2204 | table. */ | |
2fdf6df6 | 2205 | |
9291a0cd | 2206 | static struct symtab * |
a0f42c21 | 2207 | dw2_instantiate_symtab (struct dwarf2_per_cu_data *per_cu) |
9291a0cd | 2208 | { |
95554aad | 2209 | gdb_assert (dwarf2_per_objfile->using_index); |
9291a0cd TT |
2210 | if (!per_cu->v.quick->symtab) |
2211 | { | |
2212 | struct cleanup *back_to = make_cleanup (free_cached_comp_units, NULL); | |
2213 | increment_reading_symtab (); | |
a0f42c21 | 2214 | dw2_do_instantiate_symtab (per_cu); |
95554aad | 2215 | process_cu_includes (); |
9291a0cd TT |
2216 | do_cleanups (back_to); |
2217 | } | |
2218 | return per_cu->v.quick->symtab; | |
2219 | } | |
2220 | ||
f4dc4d17 DE |
2221 | /* Return the CU given its index. |
2222 | ||
2223 | This is intended for loops like: | |
2224 | ||
2225 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
2226 | + dwarf2_per_objfile->n_type_units); ++i) | |
2227 | { | |
2228 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); | |
2229 | ||
2230 | ...; | |
2231 | } | |
2232 | */ | |
2fdf6df6 | 2233 | |
1fd400ff TT |
2234 | static struct dwarf2_per_cu_data * |
2235 | dw2_get_cu (int index) | |
2236 | { | |
2237 | if (index >= dwarf2_per_objfile->n_comp_units) | |
2238 | { | |
f4dc4d17 | 2239 | index -= dwarf2_per_objfile->n_comp_units; |
094b34ac DE |
2240 | gdb_assert (index < dwarf2_per_objfile->n_type_units); |
2241 | return &dwarf2_per_objfile->all_type_units[index]->per_cu; | |
f4dc4d17 DE |
2242 | } |
2243 | ||
2244 | return dwarf2_per_objfile->all_comp_units[index]; | |
2245 | } | |
2246 | ||
2247 | /* Return the primary CU given its index. | |
2248 | The difference between this function and dw2_get_cu is in the handling | |
2249 | of type units (TUs). Here we return the type_unit_group object. | |
2250 | ||
2251 | This is intended for loops like: | |
2252 | ||
2253 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
2254 | + dwarf2_per_objfile->n_type_unit_groups); ++i) | |
2255 | { | |
2256 | struct dwarf2_per_cu_data *per_cu = dw2_get_primary_cu (i); | |
2257 | ||
2258 | ...; | |
2259 | } | |
2260 | */ | |
2261 | ||
2262 | static struct dwarf2_per_cu_data * | |
2263 | dw2_get_primary_cu (int index) | |
2264 | { | |
2265 | if (index >= dwarf2_per_objfile->n_comp_units) | |
2266 | { | |
1fd400ff | 2267 | index -= dwarf2_per_objfile->n_comp_units; |
094b34ac DE |
2268 | gdb_assert (index < dwarf2_per_objfile->n_type_unit_groups); |
2269 | return &dwarf2_per_objfile->all_type_unit_groups[index]->per_cu; | |
1fd400ff | 2270 | } |
f4dc4d17 | 2271 | |
1fd400ff TT |
2272 | return dwarf2_per_objfile->all_comp_units[index]; |
2273 | } | |
2274 | ||
9291a0cd TT |
2275 | /* A helper function that knows how to read a 64-bit value in a way |
2276 | that doesn't make gdb die. Returns 1 if the conversion went ok, 0 | |
2277 | otherwise. */ | |
2fdf6df6 | 2278 | |
9291a0cd TT |
2279 | static int |
2280 | extract_cu_value (const char *bytes, ULONGEST *result) | |
2281 | { | |
2282 | if (sizeof (ULONGEST) < 8) | |
2283 | { | |
2284 | int i; | |
2285 | ||
2286 | /* Ignore the upper 4 bytes if they are all zero. */ | |
2287 | for (i = 0; i < 4; ++i) | |
2288 | if (bytes[i + 4] != 0) | |
2289 | return 0; | |
2290 | ||
2291 | *result = extract_unsigned_integer (bytes, 4, BFD_ENDIAN_LITTLE); | |
2292 | } | |
2293 | else | |
2294 | *result = extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
2295 | return 1; | |
2296 | } | |
2297 | ||
2ec9a5e0 TT |
2298 | /* A helper for create_cus_from_index that handles a given list of |
2299 | CUs. */ | |
2fdf6df6 | 2300 | |
9291a0cd | 2301 | static int |
2ec9a5e0 TT |
2302 | create_cus_from_index_list (struct objfile *objfile, |
2303 | const gdb_byte *cu_list, offset_type n_elements, | |
2304 | struct dwarf2_section_info *section, | |
2305 | int is_dwz, | |
2306 | int base_offset) | |
9291a0cd TT |
2307 | { |
2308 | offset_type i; | |
9291a0cd | 2309 | |
2ec9a5e0 | 2310 | for (i = 0; i < n_elements; i += 2) |
9291a0cd TT |
2311 | { |
2312 | struct dwarf2_per_cu_data *the_cu; | |
2313 | ULONGEST offset, length; | |
2314 | ||
2315 | if (!extract_cu_value (cu_list, &offset) | |
2316 | || !extract_cu_value (cu_list + 8, &length)) | |
2317 | return 0; | |
2318 | cu_list += 2 * 8; | |
2319 | ||
2320 | the_cu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2321 | struct dwarf2_per_cu_data); | |
b64f50a1 | 2322 | the_cu->offset.sect_off = offset; |
9291a0cd TT |
2323 | the_cu->length = length; |
2324 | the_cu->objfile = objfile; | |
2ec9a5e0 | 2325 | the_cu->info_or_types_section = section; |
9291a0cd TT |
2326 | the_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
2327 | struct dwarf2_per_cu_quick_data); | |
2ec9a5e0 TT |
2328 | the_cu->is_dwz = is_dwz; |
2329 | dwarf2_per_objfile->all_comp_units[base_offset + i / 2] = the_cu; | |
9291a0cd TT |
2330 | } |
2331 | ||
2332 | return 1; | |
2333 | } | |
2334 | ||
2ec9a5e0 TT |
2335 | /* Read the CU list from the mapped index, and use it to create all |
2336 | the CU objects for this objfile. Return 0 if something went wrong, | |
2337 | 1 if everything went ok. */ | |
2338 | ||
2339 | static int | |
2340 | create_cus_from_index (struct objfile *objfile, | |
2341 | const gdb_byte *cu_list, offset_type cu_list_elements, | |
2342 | const gdb_byte *dwz_list, offset_type dwz_elements) | |
2343 | { | |
2344 | struct dwz_file *dwz; | |
2345 | ||
2346 | dwarf2_per_objfile->n_comp_units = (cu_list_elements + dwz_elements) / 2; | |
2347 | dwarf2_per_objfile->all_comp_units | |
2348 | = obstack_alloc (&objfile->objfile_obstack, | |
2349 | dwarf2_per_objfile->n_comp_units | |
2350 | * sizeof (struct dwarf2_per_cu_data *)); | |
2351 | ||
2352 | if (!create_cus_from_index_list (objfile, cu_list, cu_list_elements, | |
2353 | &dwarf2_per_objfile->info, 0, 0)) | |
2354 | return 0; | |
2355 | ||
2356 | if (dwz_elements == 0) | |
2357 | return 1; | |
2358 | ||
2359 | dwz = dwarf2_get_dwz_file (); | |
2360 | return create_cus_from_index_list (objfile, dwz_list, dwz_elements, | |
2361 | &dwz->info, 1, cu_list_elements / 2); | |
2362 | } | |
2363 | ||
1fd400ff | 2364 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 2365 | |
1fd400ff | 2366 | static int |
673bfd45 | 2367 | create_signatured_type_table_from_index (struct objfile *objfile, |
8b70b953 | 2368 | struct dwarf2_section_info *section, |
673bfd45 DE |
2369 | const gdb_byte *bytes, |
2370 | offset_type elements) | |
1fd400ff TT |
2371 | { |
2372 | offset_type i; | |
673bfd45 | 2373 | htab_t sig_types_hash; |
1fd400ff | 2374 | |
d467dd73 DE |
2375 | dwarf2_per_objfile->n_type_units = elements / 3; |
2376 | dwarf2_per_objfile->all_type_units | |
1fd400ff | 2377 | = obstack_alloc (&objfile->objfile_obstack, |
d467dd73 | 2378 | dwarf2_per_objfile->n_type_units |
b4dd5633 | 2379 | * sizeof (struct signatured_type *)); |
1fd400ff | 2380 | |
673bfd45 | 2381 | sig_types_hash = allocate_signatured_type_table (objfile); |
1fd400ff TT |
2382 | |
2383 | for (i = 0; i < elements; i += 3) | |
2384 | { | |
52dc124a DE |
2385 | struct signatured_type *sig_type; |
2386 | ULONGEST offset, type_offset_in_tu, signature; | |
1fd400ff TT |
2387 | void **slot; |
2388 | ||
2389 | if (!extract_cu_value (bytes, &offset) | |
52dc124a | 2390 | || !extract_cu_value (bytes + 8, &type_offset_in_tu)) |
1fd400ff TT |
2391 | return 0; |
2392 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); | |
2393 | bytes += 3 * 8; | |
2394 | ||
52dc124a | 2395 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
1fd400ff | 2396 | struct signatured_type); |
52dc124a | 2397 | sig_type->signature = signature; |
3019eac3 DE |
2398 | sig_type->type_offset_in_tu.cu_off = type_offset_in_tu; |
2399 | sig_type->per_cu.is_debug_types = 1; | |
2400 | sig_type->per_cu.info_or_types_section = section; | |
52dc124a DE |
2401 | sig_type->per_cu.offset.sect_off = offset; |
2402 | sig_type->per_cu.objfile = objfile; | |
2403 | sig_type->per_cu.v.quick | |
1fd400ff TT |
2404 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
2405 | struct dwarf2_per_cu_quick_data); | |
2406 | ||
52dc124a DE |
2407 | slot = htab_find_slot (sig_types_hash, sig_type, INSERT); |
2408 | *slot = sig_type; | |
1fd400ff | 2409 | |
b4dd5633 | 2410 | dwarf2_per_objfile->all_type_units[i / 3] = sig_type; |
1fd400ff TT |
2411 | } |
2412 | ||
673bfd45 | 2413 | dwarf2_per_objfile->signatured_types = sig_types_hash; |
1fd400ff TT |
2414 | |
2415 | return 1; | |
2416 | } | |
2417 | ||
9291a0cd TT |
2418 | /* Read the address map data from the mapped index, and use it to |
2419 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 2420 | |
9291a0cd TT |
2421 | static void |
2422 | create_addrmap_from_index (struct objfile *objfile, struct mapped_index *index) | |
2423 | { | |
2424 | const gdb_byte *iter, *end; | |
2425 | struct obstack temp_obstack; | |
2426 | struct addrmap *mutable_map; | |
2427 | struct cleanup *cleanup; | |
2428 | CORE_ADDR baseaddr; | |
2429 | ||
2430 | obstack_init (&temp_obstack); | |
2431 | cleanup = make_cleanup_obstack_free (&temp_obstack); | |
2432 | mutable_map = addrmap_create_mutable (&temp_obstack); | |
2433 | ||
2434 | iter = index->address_table; | |
2435 | end = iter + index->address_table_size; | |
2436 | ||
2437 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
2438 | ||
2439 | while (iter < end) | |
2440 | { | |
2441 | ULONGEST hi, lo, cu_index; | |
2442 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2443 | iter += 8; | |
2444 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2445 | iter += 8; | |
2446 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
2447 | iter += 4; | |
2448 | ||
2449 | addrmap_set_empty (mutable_map, lo + baseaddr, hi + baseaddr - 1, | |
1fd400ff | 2450 | dw2_get_cu (cu_index)); |
9291a0cd TT |
2451 | } |
2452 | ||
2453 | objfile->psymtabs_addrmap = addrmap_create_fixed (mutable_map, | |
2454 | &objfile->objfile_obstack); | |
2455 | do_cleanups (cleanup); | |
2456 | } | |
2457 | ||
59d7bcaf JK |
2458 | /* The hash function for strings in the mapped index. This is the same as |
2459 | SYMBOL_HASH_NEXT, but we keep a separate copy to maintain control over the | |
2460 | implementation. This is necessary because the hash function is tied to the | |
2461 | format of the mapped index file. The hash values do not have to match with | |
559a7a62 JK |
2462 | SYMBOL_HASH_NEXT. |
2463 | ||
2464 | Use INT_MAX for INDEX_VERSION if you generate the current index format. */ | |
2fdf6df6 | 2465 | |
9291a0cd | 2466 | static hashval_t |
559a7a62 | 2467 | mapped_index_string_hash (int index_version, const void *p) |
9291a0cd TT |
2468 | { |
2469 | const unsigned char *str = (const unsigned char *) p; | |
2470 | hashval_t r = 0; | |
2471 | unsigned char c; | |
2472 | ||
2473 | while ((c = *str++) != 0) | |
559a7a62 JK |
2474 | { |
2475 | if (index_version >= 5) | |
2476 | c = tolower (c); | |
2477 | r = r * 67 + c - 113; | |
2478 | } | |
9291a0cd TT |
2479 | |
2480 | return r; | |
2481 | } | |
2482 | ||
2483 | /* Find a slot in the mapped index INDEX for the object named NAME. | |
2484 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
2485 | constant pool and return 1. If NAME cannot be found, return 0. */ | |
2fdf6df6 | 2486 | |
9291a0cd TT |
2487 | static int |
2488 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, | |
2489 | offset_type **vec_out) | |
2490 | { | |
0cf03b49 JK |
2491 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2492 | offset_type hash; | |
9291a0cd | 2493 | offset_type slot, step; |
559a7a62 | 2494 | int (*cmp) (const char *, const char *); |
9291a0cd | 2495 | |
0cf03b49 JK |
2496 | if (current_language->la_language == language_cplus |
2497 | || current_language->la_language == language_java | |
2498 | || current_language->la_language == language_fortran) | |
2499 | { | |
2500 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
2501 | not contain any. */ | |
2502 | const char *paren = strchr (name, '('); | |
2503 | ||
2504 | if (paren) | |
2505 | { | |
2506 | char *dup; | |
2507 | ||
2508 | dup = xmalloc (paren - name + 1); | |
2509 | memcpy (dup, name, paren - name); | |
2510 | dup[paren - name] = 0; | |
2511 | ||
2512 | make_cleanup (xfree, dup); | |
2513 | name = dup; | |
2514 | } | |
2515 | } | |
2516 | ||
559a7a62 | 2517 | /* Index version 4 did not support case insensitive searches. But the |
feea76c2 | 2518 | indices for case insensitive languages are built in lowercase, therefore |
559a7a62 JK |
2519 | simulate our NAME being searched is also lowercased. */ |
2520 | hash = mapped_index_string_hash ((index->version == 4 | |
2521 | && case_sensitivity == case_sensitive_off | |
2522 | ? 5 : index->version), | |
2523 | name); | |
2524 | ||
3876f04e DE |
2525 | slot = hash & (index->symbol_table_slots - 1); |
2526 | step = ((hash * 17) & (index->symbol_table_slots - 1)) | 1; | |
559a7a62 | 2527 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
2528 | |
2529 | for (;;) | |
2530 | { | |
2531 | /* Convert a slot number to an offset into the table. */ | |
2532 | offset_type i = 2 * slot; | |
2533 | const char *str; | |
3876f04e | 2534 | if (index->symbol_table[i] == 0 && index->symbol_table[i + 1] == 0) |
0cf03b49 JK |
2535 | { |
2536 | do_cleanups (back_to); | |
2537 | return 0; | |
2538 | } | |
9291a0cd | 2539 | |
3876f04e | 2540 | str = index->constant_pool + MAYBE_SWAP (index->symbol_table[i]); |
559a7a62 | 2541 | if (!cmp (name, str)) |
9291a0cd TT |
2542 | { |
2543 | *vec_out = (offset_type *) (index->constant_pool | |
3876f04e | 2544 | + MAYBE_SWAP (index->symbol_table[i + 1])); |
0cf03b49 | 2545 | do_cleanups (back_to); |
9291a0cd TT |
2546 | return 1; |
2547 | } | |
2548 | ||
3876f04e | 2549 | slot = (slot + step) & (index->symbol_table_slots - 1); |
9291a0cd TT |
2550 | } |
2551 | } | |
2552 | ||
2ec9a5e0 TT |
2553 | /* A helper function that reads the .gdb_index from SECTION and fills |
2554 | in MAP. FILENAME is the name of the file containing the section; | |
2555 | it is used for error reporting. DEPRECATED_OK is nonzero if it is | |
2556 | ok to use deprecated sections. | |
2557 | ||
2558 | CU_LIST, CU_LIST_ELEMENTS, TYPES_LIST, and TYPES_LIST_ELEMENTS are | |
2559 | out parameters that are filled in with information about the CU and | |
2560 | TU lists in the section. | |
2561 | ||
2562 | Returns 1 if all went well, 0 otherwise. */ | |
2fdf6df6 | 2563 | |
9291a0cd | 2564 | static int |
2ec9a5e0 TT |
2565 | read_index_from_section (struct objfile *objfile, |
2566 | const char *filename, | |
2567 | int deprecated_ok, | |
2568 | struct dwarf2_section_info *section, | |
2569 | struct mapped_index *map, | |
2570 | const gdb_byte **cu_list, | |
2571 | offset_type *cu_list_elements, | |
2572 | const gdb_byte **types_list, | |
2573 | offset_type *types_list_elements) | |
9291a0cd | 2574 | { |
9291a0cd | 2575 | char *addr; |
2ec9a5e0 | 2576 | offset_type version; |
b3b272e1 | 2577 | offset_type *metadata; |
1fd400ff | 2578 | int i; |
9291a0cd | 2579 | |
2ec9a5e0 | 2580 | if (dwarf2_section_empty_p (section)) |
9291a0cd | 2581 | return 0; |
82430852 JK |
2582 | |
2583 | /* Older elfutils strip versions could keep the section in the main | |
2584 | executable while splitting it for the separate debug info file. */ | |
2ec9a5e0 | 2585 | if ((bfd_get_file_flags (section->asection) & SEC_HAS_CONTENTS) == 0) |
82430852 JK |
2586 | return 0; |
2587 | ||
2ec9a5e0 | 2588 | dwarf2_read_section (objfile, section); |
9291a0cd | 2589 | |
2ec9a5e0 | 2590 | addr = section->buffer; |
9291a0cd | 2591 | /* Version check. */ |
1fd400ff | 2592 | version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 2593 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 2594 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 2595 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 2596 | indices. */ |
831adc1f | 2597 | if (version < 4) |
481860b3 GB |
2598 | { |
2599 | static int warning_printed = 0; | |
2600 | if (!warning_printed) | |
2601 | { | |
2602 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2ec9a5e0 | 2603 | filename); |
481860b3 GB |
2604 | warning_printed = 1; |
2605 | } | |
2606 | return 0; | |
2607 | } | |
2608 | /* Index version 4 uses a different hash function than index version | |
2609 | 5 and later. | |
2610 | ||
2611 | Versions earlier than 6 did not emit psymbols for inlined | |
2612 | functions. Using these files will cause GDB not to be able to | |
2613 | set breakpoints on inlined functions by name, so we ignore these | |
e615022a DE |
2614 | indices unless the user has done |
2615 | "set use-deprecated-index-sections on". */ | |
2ec9a5e0 | 2616 | if (version < 6 && !deprecated_ok) |
481860b3 GB |
2617 | { |
2618 | static int warning_printed = 0; | |
2619 | if (!warning_printed) | |
2620 | { | |
e615022a DE |
2621 | warning (_("\ |
2622 | Skipping deprecated .gdb_index section in %s.\n\ | |
2623 | Do \"set use-deprecated-index-sections on\" before the file is read\n\ | |
2624 | to use the section anyway."), | |
2ec9a5e0 | 2625 | filename); |
481860b3 GB |
2626 | warning_printed = 1; |
2627 | } | |
2628 | return 0; | |
2629 | } | |
2630 | /* Indexes with higher version than the one supported by GDB may be no | |
594e8718 | 2631 | longer backward compatible. */ |
156942c7 | 2632 | if (version > 7) |
594e8718 | 2633 | return 0; |
9291a0cd | 2634 | |
559a7a62 | 2635 | map->version = version; |
2ec9a5e0 | 2636 | map->total_size = section->size; |
9291a0cd TT |
2637 | |
2638 | metadata = (offset_type *) (addr + sizeof (offset_type)); | |
1fd400ff TT |
2639 | |
2640 | i = 0; | |
2ec9a5e0 TT |
2641 | *cu_list = addr + MAYBE_SWAP (metadata[i]); |
2642 | *cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
2643 | / 8); | |
1fd400ff TT |
2644 | ++i; |
2645 | ||
2ec9a5e0 TT |
2646 | *types_list = addr + MAYBE_SWAP (metadata[i]); |
2647 | *types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
2648 | - MAYBE_SWAP (metadata[i])) | |
2649 | / 8); | |
987d643c | 2650 | ++i; |
1fd400ff TT |
2651 | |
2652 | map->address_table = addr + MAYBE_SWAP (metadata[i]); | |
2653 | map->address_table_size = (MAYBE_SWAP (metadata[i + 1]) | |
2654 | - MAYBE_SWAP (metadata[i])); | |
2655 | ++i; | |
2656 | ||
3876f04e DE |
2657 | map->symbol_table = (offset_type *) (addr + MAYBE_SWAP (metadata[i])); |
2658 | map->symbol_table_slots = ((MAYBE_SWAP (metadata[i + 1]) | |
2659 | - MAYBE_SWAP (metadata[i])) | |
2660 | / (2 * sizeof (offset_type))); | |
1fd400ff | 2661 | ++i; |
9291a0cd | 2662 | |
1fd400ff TT |
2663 | map->constant_pool = addr + MAYBE_SWAP (metadata[i]); |
2664 | ||
2ec9a5e0 TT |
2665 | return 1; |
2666 | } | |
2667 | ||
2668 | ||
2669 | /* Read the index file. If everything went ok, initialize the "quick" | |
2670 | elements of all the CUs and return 1. Otherwise, return 0. */ | |
2671 | ||
2672 | static int | |
2673 | dwarf2_read_index (struct objfile *objfile) | |
2674 | { | |
2675 | struct mapped_index local_map, *map; | |
2676 | const gdb_byte *cu_list, *types_list, *dwz_list = NULL; | |
2677 | offset_type cu_list_elements, types_list_elements, dwz_list_elements = 0; | |
2678 | ||
2679 | if (!read_index_from_section (objfile, objfile->name, | |
2680 | use_deprecated_index_sections, | |
2681 | &dwarf2_per_objfile->gdb_index, &local_map, | |
2682 | &cu_list, &cu_list_elements, | |
2683 | &types_list, &types_list_elements)) | |
2684 | return 0; | |
2685 | ||
0fefef59 | 2686 | /* Don't use the index if it's empty. */ |
2ec9a5e0 | 2687 | if (local_map.symbol_table_slots == 0) |
0fefef59 DE |
2688 | return 0; |
2689 | ||
2ec9a5e0 TT |
2690 | /* If there is a .dwz file, read it so we can get its CU list as |
2691 | well. */ | |
2692 | if (bfd_get_section_by_name (objfile->obfd, ".gnu_debugaltlink") != NULL) | |
2693 | { | |
2694 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
2695 | struct mapped_index dwz_map; | |
2696 | const gdb_byte *dwz_types_ignore; | |
2697 | offset_type dwz_types_elements_ignore; | |
2698 | ||
2699 | if (!read_index_from_section (objfile, bfd_get_filename (dwz->dwz_bfd), | |
2700 | 1, | |
2701 | &dwz->gdb_index, &dwz_map, | |
2702 | &dwz_list, &dwz_list_elements, | |
2703 | &dwz_types_ignore, | |
2704 | &dwz_types_elements_ignore)) | |
2705 | { | |
2706 | warning (_("could not read '.gdb_index' section from %s; skipping"), | |
2707 | bfd_get_filename (dwz->dwz_bfd)); | |
2708 | return 0; | |
2709 | } | |
2710 | } | |
2711 | ||
2712 | if (!create_cus_from_index (objfile, cu_list, cu_list_elements, | |
2713 | dwz_list, dwz_list_elements)) | |
1fd400ff TT |
2714 | return 0; |
2715 | ||
8b70b953 TT |
2716 | if (types_list_elements) |
2717 | { | |
2718 | struct dwarf2_section_info *section; | |
2719 | ||
2720 | /* We can only handle a single .debug_types when we have an | |
2721 | index. */ | |
2722 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) != 1) | |
2723 | return 0; | |
2724 | ||
2725 | section = VEC_index (dwarf2_section_info_def, | |
2726 | dwarf2_per_objfile->types, 0); | |
2727 | ||
2728 | if (!create_signatured_type_table_from_index (objfile, section, | |
2729 | types_list, | |
2730 | types_list_elements)) | |
2731 | return 0; | |
2732 | } | |
9291a0cd | 2733 | |
2ec9a5e0 TT |
2734 | create_addrmap_from_index (objfile, &local_map); |
2735 | ||
2736 | map = obstack_alloc (&objfile->objfile_obstack, sizeof (struct mapped_index)); | |
2737 | *map = local_map; | |
9291a0cd TT |
2738 | |
2739 | dwarf2_per_objfile->index_table = map; | |
2740 | dwarf2_per_objfile->using_index = 1; | |
7b9f3c50 DE |
2741 | dwarf2_per_objfile->quick_file_names_table = |
2742 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd TT |
2743 | |
2744 | return 1; | |
2745 | } | |
2746 | ||
2747 | /* A helper for the "quick" functions which sets the global | |
2748 | dwarf2_per_objfile according to OBJFILE. */ | |
2fdf6df6 | 2749 | |
9291a0cd TT |
2750 | static void |
2751 | dw2_setup (struct objfile *objfile) | |
2752 | { | |
2753 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
2754 | gdb_assert (dwarf2_per_objfile); | |
2755 | } | |
2756 | ||
f4dc4d17 DE |
2757 | /* Reader function for dw2_build_type_unit_groups. */ |
2758 | ||
2759 | static void | |
2760 | dw2_build_type_unit_groups_reader (const struct die_reader_specs *reader, | |
2761 | gdb_byte *info_ptr, | |
2762 | struct die_info *type_unit_die, | |
2763 | int has_children, | |
2764 | void *data) | |
2765 | { | |
2766 | struct dwarf2_cu *cu = reader->cu; | |
f4dc4d17 DE |
2767 | struct attribute *attr; |
2768 | struct type_unit_group *tu_group; | |
2769 | ||
2770 | gdb_assert (data == NULL); | |
2771 | ||
2772 | if (! has_children) | |
2773 | return; | |
2774 | ||
2775 | attr = dwarf2_attr_no_follow (type_unit_die, DW_AT_stmt_list); | |
2776 | /* Call this for its side-effect of creating the associated | |
2777 | struct type_unit_group if it doesn't already exist. */ | |
094b34ac | 2778 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 DE |
2779 | } |
2780 | ||
2781 | /* Build dwarf2_per_objfile->type_unit_groups. | |
2782 | This function may be called multiple times. */ | |
2783 | ||
2784 | static void | |
2785 | dw2_build_type_unit_groups (void) | |
2786 | { | |
2787 | if (dwarf2_per_objfile->type_unit_groups == NULL) | |
2788 | build_type_unit_groups (dw2_build_type_unit_groups_reader, NULL); | |
2789 | } | |
2790 | ||
dee91e82 | 2791 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 2792 | |
dee91e82 DE |
2793 | static void |
2794 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
2795 | gdb_byte *info_ptr, | |
2796 | struct die_info *comp_unit_die, | |
2797 | int has_children, | |
2798 | void *data) | |
9291a0cd | 2799 | { |
dee91e82 DE |
2800 | struct dwarf2_cu *cu = reader->cu; |
2801 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; | |
2802 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
094b34ac | 2803 | struct dwarf2_per_cu_data *lh_cu; |
7b9f3c50 | 2804 | struct line_header *lh; |
9291a0cd | 2805 | struct attribute *attr; |
dee91e82 | 2806 | int i; |
9291a0cd | 2807 | char *name, *comp_dir; |
7b9f3c50 DE |
2808 | void **slot; |
2809 | struct quick_file_names *qfn; | |
2810 | unsigned int line_offset; | |
9291a0cd | 2811 | |
07261596 TT |
2812 | /* Our callers never want to match partial units -- instead they |
2813 | will match the enclosing full CU. */ | |
2814 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
2815 | { | |
2816 | this_cu->v.quick->no_file_data = 1; | |
2817 | return; | |
2818 | } | |
2819 | ||
094b34ac DE |
2820 | /* If we're reading the line header for TUs, store it in the "per_cu" |
2821 | for tu_group. */ | |
2822 | if (this_cu->is_debug_types) | |
2823 | { | |
2824 | struct type_unit_group *tu_group = data; | |
2825 | ||
2826 | gdb_assert (tu_group != NULL); | |
2827 | lh_cu = &tu_group->per_cu; | |
2828 | } | |
2829 | else | |
2830 | lh_cu = this_cu; | |
2831 | ||
7b9f3c50 DE |
2832 | lh = NULL; |
2833 | slot = NULL; | |
2834 | line_offset = 0; | |
dee91e82 DE |
2835 | |
2836 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); | |
9291a0cd TT |
2837 | if (attr) |
2838 | { | |
7b9f3c50 DE |
2839 | struct quick_file_names find_entry; |
2840 | ||
2841 | line_offset = DW_UNSND (attr); | |
2842 | ||
2843 | /* We may have already read in this line header (TU line header sharing). | |
2844 | If we have we're done. */ | |
094b34ac DE |
2845 | find_entry.hash.dwo_unit = cu->dwo_unit; |
2846 | find_entry.hash.line_offset.sect_off = line_offset; | |
7b9f3c50 DE |
2847 | slot = htab_find_slot (dwarf2_per_objfile->quick_file_names_table, |
2848 | &find_entry, INSERT); | |
2849 | if (*slot != NULL) | |
2850 | { | |
094b34ac | 2851 | lh_cu->v.quick->file_names = *slot; |
dee91e82 | 2852 | return; |
7b9f3c50 DE |
2853 | } |
2854 | ||
3019eac3 | 2855 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
2856 | } |
2857 | if (lh == NULL) | |
2858 | { | |
094b34ac | 2859 | lh_cu->v.quick->no_file_data = 1; |
dee91e82 | 2860 | return; |
9291a0cd TT |
2861 | } |
2862 | ||
7b9f3c50 | 2863 | qfn = obstack_alloc (&objfile->objfile_obstack, sizeof (*qfn)); |
094b34ac DE |
2864 | qfn->hash.dwo_unit = cu->dwo_unit; |
2865 | qfn->hash.line_offset.sect_off = line_offset; | |
7b9f3c50 DE |
2866 | gdb_assert (slot != NULL); |
2867 | *slot = qfn; | |
9291a0cd | 2868 | |
dee91e82 | 2869 | find_file_and_directory (comp_unit_die, cu, &name, &comp_dir); |
9291a0cd | 2870 | |
7b9f3c50 DE |
2871 | qfn->num_file_names = lh->num_file_names; |
2872 | qfn->file_names = obstack_alloc (&objfile->objfile_obstack, | |
2873 | lh->num_file_names * sizeof (char *)); | |
9291a0cd | 2874 | for (i = 0; i < lh->num_file_names; ++i) |
7b9f3c50 DE |
2875 | qfn->file_names[i] = file_full_name (i + 1, lh, comp_dir); |
2876 | qfn->real_names = NULL; | |
9291a0cd | 2877 | |
7b9f3c50 | 2878 | free_line_header (lh); |
7b9f3c50 | 2879 | |
094b34ac | 2880 | lh_cu->v.quick->file_names = qfn; |
dee91e82 DE |
2881 | } |
2882 | ||
2883 | /* A helper for the "quick" functions which attempts to read the line | |
2884 | table for THIS_CU. */ | |
2885 | ||
2886 | static struct quick_file_names * | |
2887 | dw2_get_file_names (struct objfile *objfile, | |
2888 | struct dwarf2_per_cu_data *this_cu) | |
2889 | { | |
f4dc4d17 DE |
2890 | /* For TUs this should only be called on the parent group. */ |
2891 | if (this_cu->is_debug_types) | |
2892 | gdb_assert (IS_TYPE_UNIT_GROUP (this_cu)); | |
2893 | ||
dee91e82 DE |
2894 | if (this_cu->v.quick->file_names != NULL) |
2895 | return this_cu->v.quick->file_names; | |
2896 | /* If we know there is no line data, no point in looking again. */ | |
2897 | if (this_cu->v.quick->no_file_data) | |
2898 | return NULL; | |
2899 | ||
3019eac3 DE |
2900 | /* If DWO files are in use, we can still find the DW_AT_stmt_list attribute |
2901 | in the stub for CUs, there's is no need to lookup the DWO file. | |
2902 | However, that's not the case for TUs where DW_AT_stmt_list lives in the | |
2903 | DWO file. */ | |
2904 | if (this_cu->is_debug_types) | |
094b34ac DE |
2905 | { |
2906 | struct type_unit_group *tu_group = this_cu->s.type_unit_group; | |
2907 | ||
2908 | init_cutu_and_read_dies (tu_group->t.first_tu, NULL, 0, 0, | |
2909 | dw2_get_file_names_reader, tu_group); | |
2910 | } | |
3019eac3 DE |
2911 | else |
2912 | init_cutu_and_read_dies_simple (this_cu, dw2_get_file_names_reader, NULL); | |
dee91e82 DE |
2913 | |
2914 | if (this_cu->v.quick->no_file_data) | |
2915 | return NULL; | |
2916 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
2917 | } |
2918 | ||
2919 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 2920 | real path for a given file name from the line table. */ |
2fdf6df6 | 2921 | |
9291a0cd | 2922 | static const char * |
7b9f3c50 DE |
2923 | dw2_get_real_path (struct objfile *objfile, |
2924 | struct quick_file_names *qfn, int index) | |
9291a0cd | 2925 | { |
7b9f3c50 DE |
2926 | if (qfn->real_names == NULL) |
2927 | qfn->real_names = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
2928 | qfn->num_file_names, sizeof (char *)); | |
9291a0cd | 2929 | |
7b9f3c50 DE |
2930 | if (qfn->real_names[index] == NULL) |
2931 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]); | |
9291a0cd | 2932 | |
7b9f3c50 | 2933 | return qfn->real_names[index]; |
9291a0cd TT |
2934 | } |
2935 | ||
2936 | static struct symtab * | |
2937 | dw2_find_last_source_symtab (struct objfile *objfile) | |
2938 | { | |
2939 | int index; | |
ae2de4f8 | 2940 | |
9291a0cd TT |
2941 | dw2_setup (objfile); |
2942 | index = dwarf2_per_objfile->n_comp_units - 1; | |
a0f42c21 | 2943 | return dw2_instantiate_symtab (dw2_get_cu (index)); |
9291a0cd TT |
2944 | } |
2945 | ||
7b9f3c50 DE |
2946 | /* Traversal function for dw2_forget_cached_source_info. */ |
2947 | ||
2948 | static int | |
2949 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 2950 | { |
7b9f3c50 | 2951 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 2952 | |
7b9f3c50 | 2953 | if (file_data->real_names) |
9291a0cd | 2954 | { |
7b9f3c50 | 2955 | int i; |
9291a0cd | 2956 | |
7b9f3c50 | 2957 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 2958 | { |
7b9f3c50 DE |
2959 | xfree ((void*) file_data->real_names[i]); |
2960 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
2961 | } |
2962 | } | |
7b9f3c50 DE |
2963 | |
2964 | return 1; | |
2965 | } | |
2966 | ||
2967 | static void | |
2968 | dw2_forget_cached_source_info (struct objfile *objfile) | |
2969 | { | |
2970 | dw2_setup (objfile); | |
2971 | ||
2972 | htab_traverse_noresize (dwarf2_per_objfile->quick_file_names_table, | |
2973 | dw2_free_cached_file_names, NULL); | |
9291a0cd TT |
2974 | } |
2975 | ||
f8eba3c6 TT |
2976 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
2977 | the symtabs and calls the iterator. */ | |
2978 | ||
2979 | static int | |
2980 | dw2_map_expand_apply (struct objfile *objfile, | |
2981 | struct dwarf2_per_cu_data *per_cu, | |
2982 | const char *name, | |
2983 | const char *full_path, const char *real_path, | |
2984 | int (*callback) (struct symtab *, void *), | |
2985 | void *data) | |
2986 | { | |
2987 | struct symtab *last_made = objfile->symtabs; | |
2988 | ||
2989 | /* Don't visit already-expanded CUs. */ | |
2990 | if (per_cu->v.quick->symtab) | |
2991 | return 0; | |
2992 | ||
2993 | /* This may expand more than one symtab, and we want to iterate over | |
2994 | all of them. */ | |
a0f42c21 | 2995 | dw2_instantiate_symtab (per_cu); |
f8eba3c6 TT |
2996 | |
2997 | return iterate_over_some_symtabs (name, full_path, real_path, callback, data, | |
2998 | objfile->symtabs, last_made); | |
2999 | } | |
3000 | ||
3001 | /* Implementation of the map_symtabs_matching_filename method. */ | |
3002 | ||
9291a0cd | 3003 | static int |
f8eba3c6 TT |
3004 | dw2_map_symtabs_matching_filename (struct objfile *objfile, const char *name, |
3005 | const char *full_path, const char *real_path, | |
3006 | int (*callback) (struct symtab *, void *), | |
3007 | void *data) | |
9291a0cd TT |
3008 | { |
3009 | int i; | |
c011a4f4 | 3010 | const char *name_basename = lbasename (name); |
4aac40c8 TT |
3011 | int name_len = strlen (name); |
3012 | int is_abs = IS_ABSOLUTE_PATH (name); | |
9291a0cd TT |
3013 | |
3014 | dw2_setup (objfile); | |
ae2de4f8 | 3015 | |
f4dc4d17 DE |
3016 | dw2_build_type_unit_groups (); |
3017 | ||
1fd400ff | 3018 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
f4dc4d17 | 3019 | + dwarf2_per_objfile->n_type_unit_groups); ++i) |
9291a0cd TT |
3020 | { |
3021 | int j; | |
f4dc4d17 | 3022 | struct dwarf2_per_cu_data *per_cu = dw2_get_primary_cu (i); |
7b9f3c50 | 3023 | struct quick_file_names *file_data; |
9291a0cd | 3024 | |
3d7bb9d9 | 3025 | /* We only need to look at symtabs not already expanded. */ |
e254ef6a | 3026 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
3027 | continue; |
3028 | ||
7b9f3c50 DE |
3029 | file_data = dw2_get_file_names (objfile, per_cu); |
3030 | if (file_data == NULL) | |
9291a0cd TT |
3031 | continue; |
3032 | ||
7b9f3c50 | 3033 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3034 | { |
7b9f3c50 | 3035 | const char *this_name = file_data->file_names[j]; |
9291a0cd | 3036 | |
4aac40c8 TT |
3037 | if (FILENAME_CMP (name, this_name) == 0 |
3038 | || (!is_abs && compare_filenames_for_search (this_name, | |
3039 | name, name_len))) | |
9291a0cd | 3040 | { |
f8eba3c6 TT |
3041 | if (dw2_map_expand_apply (objfile, per_cu, |
3042 | name, full_path, real_path, | |
3043 | callback, data)) | |
3044 | return 1; | |
4aac40c8 | 3045 | } |
9291a0cd | 3046 | |
c011a4f4 DE |
3047 | /* Before we invoke realpath, which can get expensive when many |
3048 | files are involved, do a quick comparison of the basenames. */ | |
3049 | if (! basenames_may_differ | |
3050 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
3051 | continue; | |
3052 | ||
9291a0cd TT |
3053 | if (full_path != NULL) |
3054 | { | |
7b9f3c50 DE |
3055 | const char *this_real_name = dw2_get_real_path (objfile, |
3056 | file_data, j); | |
9291a0cd | 3057 | |
7b9f3c50 | 3058 | if (this_real_name != NULL |
4aac40c8 TT |
3059 | && (FILENAME_CMP (full_path, this_real_name) == 0 |
3060 | || (!is_abs | |
3061 | && compare_filenames_for_search (this_real_name, | |
3062 | name, name_len)))) | |
9291a0cd | 3063 | { |
f8eba3c6 TT |
3064 | if (dw2_map_expand_apply (objfile, per_cu, |
3065 | name, full_path, real_path, | |
3066 | callback, data)) | |
3067 | return 1; | |
9291a0cd TT |
3068 | } |
3069 | } | |
3070 | ||
3071 | if (real_path != NULL) | |
3072 | { | |
7b9f3c50 DE |
3073 | const char *this_real_name = dw2_get_real_path (objfile, |
3074 | file_data, j); | |
9291a0cd | 3075 | |
7b9f3c50 | 3076 | if (this_real_name != NULL |
4aac40c8 TT |
3077 | && (FILENAME_CMP (real_path, this_real_name) == 0 |
3078 | || (!is_abs | |
3079 | && compare_filenames_for_search (this_real_name, | |
3080 | name, name_len)))) | |
9291a0cd | 3081 | { |
f8eba3c6 TT |
3082 | if (dw2_map_expand_apply (objfile, per_cu, |
3083 | name, full_path, real_path, | |
3084 | callback, data)) | |
3085 | return 1; | |
9291a0cd TT |
3086 | } |
3087 | } | |
3088 | } | |
3089 | } | |
3090 | ||
9291a0cd TT |
3091 | return 0; |
3092 | } | |
3093 | ||
3094 | static struct symtab * | |
3095 | dw2_lookup_symbol (struct objfile *objfile, int block_index, | |
3096 | const char *name, domain_enum domain) | |
3097 | { | |
774b6a14 | 3098 | /* We do all the work in the pre_expand_symtabs_matching hook |
9291a0cd TT |
3099 | instead. */ |
3100 | return NULL; | |
3101 | } | |
3102 | ||
3103 | /* A helper function that expands all symtabs that hold an object | |
156942c7 DE |
3104 | named NAME. If WANT_SPECIFIC_BLOCK is non-zero, only look for |
3105 | symbols in block BLOCK_KIND. */ | |
2fdf6df6 | 3106 | |
9291a0cd | 3107 | static void |
156942c7 DE |
3108 | dw2_do_expand_symtabs_matching (struct objfile *objfile, |
3109 | int want_specific_block, | |
3110 | enum block_enum block_kind, | |
3111 | const char *name, domain_enum domain) | |
9291a0cd | 3112 | { |
156942c7 DE |
3113 | struct mapped_index *index; |
3114 | ||
9291a0cd TT |
3115 | dw2_setup (objfile); |
3116 | ||
156942c7 DE |
3117 | index = dwarf2_per_objfile->index_table; |
3118 | ||
ae2de4f8 | 3119 | /* index_table is NULL if OBJF_READNOW. */ |
156942c7 | 3120 | if (index) |
9291a0cd TT |
3121 | { |
3122 | offset_type *vec; | |
3123 | ||
156942c7 | 3124 | if (find_slot_in_mapped_hash (index, name, &vec)) |
9291a0cd TT |
3125 | { |
3126 | offset_type i, len = MAYBE_SWAP (*vec); | |
3127 | for (i = 0; i < len; ++i) | |
3128 | { | |
156942c7 DE |
3129 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[i + 1]); |
3130 | offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
e254ef6a | 3131 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (cu_index); |
156942c7 DE |
3132 | int want_static = block_kind != GLOBAL_BLOCK; |
3133 | /* This value is only valid for index versions >= 7. */ | |
3134 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
3135 | gdb_index_symbol_kind symbol_kind = | |
3136 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
83a788b8 DE |
3137 | /* Only check the symbol attributes if they're present. |
3138 | Indices prior to version 7 don't record them, | |
3139 | and indices >= 7 may elide them for certain symbols | |
3140 | (gold does this). */ | |
3141 | int attrs_valid = | |
3142 | (index->version >= 7 | |
3143 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
3144 | ||
3145 | if (attrs_valid | |
3146 | && want_specific_block | |
156942c7 DE |
3147 | && want_static != is_static) |
3148 | continue; | |
3149 | ||
83a788b8 DE |
3150 | /* Only check the symbol's kind if it has one. */ |
3151 | if (attrs_valid) | |
156942c7 DE |
3152 | { |
3153 | switch (domain) | |
3154 | { | |
3155 | case VAR_DOMAIN: | |
3156 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
3157 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
3158 | /* Some types are also in VAR_DOMAIN. */ | |
3159 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3160 | continue; | |
3161 | break; | |
3162 | case STRUCT_DOMAIN: | |
3163 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3164 | continue; | |
3165 | break; | |
3166 | case LABEL_DOMAIN: | |
3167 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3168 | continue; | |
3169 | break; | |
3170 | default: | |
3171 | break; | |
3172 | } | |
3173 | } | |
1fd400ff | 3174 | |
a0f42c21 | 3175 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
3176 | } |
3177 | } | |
3178 | } | |
3179 | } | |
3180 | ||
774b6a14 TT |
3181 | static void |
3182 | dw2_pre_expand_symtabs_matching (struct objfile *objfile, | |
8903c50d | 3183 | enum block_enum block_kind, const char *name, |
774b6a14 | 3184 | domain_enum domain) |
9291a0cd | 3185 | { |
156942c7 | 3186 | dw2_do_expand_symtabs_matching (objfile, 1, block_kind, name, domain); |
9291a0cd TT |
3187 | } |
3188 | ||
3189 | static void | |
3190 | dw2_print_stats (struct objfile *objfile) | |
3191 | { | |
3192 | int i, count; | |
3193 | ||
3194 | dw2_setup (objfile); | |
3195 | count = 0; | |
1fd400ff | 3196 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
d467dd73 | 3197 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 3198 | { |
e254ef6a | 3199 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 3200 | |
e254ef6a | 3201 | if (!per_cu->v.quick->symtab) |
9291a0cd TT |
3202 | ++count; |
3203 | } | |
3204 | printf_filtered (_(" Number of unread CUs: %d\n"), count); | |
3205 | } | |
3206 | ||
3207 | static void | |
3208 | dw2_dump (struct objfile *objfile) | |
3209 | { | |
3210 | /* Nothing worth printing. */ | |
3211 | } | |
3212 | ||
3213 | static void | |
3214 | dw2_relocate (struct objfile *objfile, struct section_offsets *new_offsets, | |
3215 | struct section_offsets *delta) | |
3216 | { | |
3217 | /* There's nothing to relocate here. */ | |
3218 | } | |
3219 | ||
3220 | static void | |
3221 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
3222 | const char *func_name) | |
3223 | { | |
156942c7 DE |
3224 | /* Note: It doesn't matter what we pass for block_kind here. */ |
3225 | dw2_do_expand_symtabs_matching (objfile, 0, GLOBAL_BLOCK, func_name, | |
3226 | VAR_DOMAIN); | |
9291a0cd TT |
3227 | } |
3228 | ||
3229 | static void | |
3230 | dw2_expand_all_symtabs (struct objfile *objfile) | |
3231 | { | |
3232 | int i; | |
3233 | ||
3234 | dw2_setup (objfile); | |
1fd400ff TT |
3235 | |
3236 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
d467dd73 | 3237 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 3238 | { |
e254ef6a | 3239 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 3240 | |
a0f42c21 | 3241 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
3242 | } |
3243 | } | |
3244 | ||
3245 | static void | |
3246 | dw2_expand_symtabs_with_filename (struct objfile *objfile, | |
3247 | const char *filename) | |
3248 | { | |
3249 | int i; | |
3250 | ||
3251 | dw2_setup (objfile); | |
d4637a04 DE |
3252 | |
3253 | /* We don't need to consider type units here. | |
3254 | This is only called for examining code, e.g. expand_line_sal. | |
3255 | There can be an order of magnitude (or more) more type units | |
3256 | than comp units, and we avoid them if we can. */ | |
3257 | ||
3258 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
9291a0cd TT |
3259 | { |
3260 | int j; | |
e254ef6a | 3261 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
7b9f3c50 | 3262 | struct quick_file_names *file_data; |
9291a0cd | 3263 | |
3d7bb9d9 | 3264 | /* We only need to look at symtabs not already expanded. */ |
e254ef6a | 3265 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
3266 | continue; |
3267 | ||
7b9f3c50 DE |
3268 | file_data = dw2_get_file_names (objfile, per_cu); |
3269 | if (file_data == NULL) | |
9291a0cd TT |
3270 | continue; |
3271 | ||
7b9f3c50 | 3272 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3273 | { |
7b9f3c50 | 3274 | const char *this_name = file_data->file_names[j]; |
1ef75ecc | 3275 | if (FILENAME_CMP (this_name, filename) == 0) |
9291a0cd | 3276 | { |
a0f42c21 | 3277 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
3278 | break; |
3279 | } | |
3280 | } | |
3281 | } | |
3282 | } | |
3283 | ||
356d9f9d TT |
3284 | /* A helper function for dw2_find_symbol_file that finds the primary |
3285 | file name for a given CU. This is a die_reader_func. */ | |
3286 | ||
3287 | static void | |
3288 | dw2_get_primary_filename_reader (const struct die_reader_specs *reader, | |
3289 | gdb_byte *info_ptr, | |
3290 | struct die_info *comp_unit_die, | |
3291 | int has_children, | |
3292 | void *data) | |
3293 | { | |
3294 | const char **result_ptr = data; | |
3295 | struct dwarf2_cu *cu = reader->cu; | |
3296 | struct attribute *attr; | |
3297 | ||
3298 | attr = dwarf2_attr (comp_unit_die, DW_AT_name, cu); | |
3299 | if (attr == NULL) | |
3300 | *result_ptr = NULL; | |
3301 | else | |
3302 | *result_ptr = DW_STRING (attr); | |
3303 | } | |
3304 | ||
dd786858 | 3305 | static const char * |
9291a0cd TT |
3306 | dw2_find_symbol_file (struct objfile *objfile, const char *name) |
3307 | { | |
e254ef6a | 3308 | struct dwarf2_per_cu_data *per_cu; |
9291a0cd | 3309 | offset_type *vec; |
7b9f3c50 | 3310 | struct quick_file_names *file_data; |
356d9f9d | 3311 | const char *filename; |
9291a0cd TT |
3312 | |
3313 | dw2_setup (objfile); | |
3314 | ||
ae2de4f8 | 3315 | /* index_table is NULL if OBJF_READNOW. */ |
9291a0cd | 3316 | if (!dwarf2_per_objfile->index_table) |
96408a79 SA |
3317 | { |
3318 | struct symtab *s; | |
3319 | ||
d790cf0a DE |
3320 | ALL_OBJFILE_PRIMARY_SYMTABS (objfile, s) |
3321 | { | |
3322 | struct blockvector *bv = BLOCKVECTOR (s); | |
3323 | const struct block *block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
3324 | struct symbol *sym = lookup_block_symbol (block, name, VAR_DOMAIN); | |
3325 | ||
3326 | if (sym) | |
3327 | return sym->symtab->filename; | |
3328 | } | |
96408a79 SA |
3329 | return NULL; |
3330 | } | |
9291a0cd TT |
3331 | |
3332 | if (!find_slot_in_mapped_hash (dwarf2_per_objfile->index_table, | |
3333 | name, &vec)) | |
3334 | return NULL; | |
3335 | ||
3336 | /* Note that this just looks at the very first one named NAME -- but | |
3337 | actually we are looking for a function. find_main_filename | |
3338 | should be rewritten so that it doesn't require a custom hook. It | |
3339 | could just use the ordinary symbol tables. */ | |
3340 | /* vec[0] is the length, which must always be >0. */ | |
156942c7 | 3341 | per_cu = dw2_get_cu (GDB_INDEX_CU_VALUE (MAYBE_SWAP (vec[1]))); |
9291a0cd | 3342 | |
356d9f9d TT |
3343 | if (per_cu->v.quick->symtab != NULL) |
3344 | return per_cu->v.quick->symtab->filename; | |
3345 | ||
f4dc4d17 DE |
3346 | init_cutu_and_read_dies (per_cu, NULL, 0, 0, |
3347 | dw2_get_primary_filename_reader, &filename); | |
9291a0cd | 3348 | |
356d9f9d | 3349 | return filename; |
9291a0cd TT |
3350 | } |
3351 | ||
3352 | static void | |
40658b94 PH |
3353 | dw2_map_matching_symbols (const char * name, domain_enum namespace, |
3354 | struct objfile *objfile, int global, | |
3355 | int (*callback) (struct block *, | |
3356 | struct symbol *, void *), | |
2edb89d3 JK |
3357 | void *data, symbol_compare_ftype *match, |
3358 | symbol_compare_ftype *ordered_compare) | |
9291a0cd | 3359 | { |
40658b94 | 3360 | /* Currently unimplemented; used for Ada. The function can be called if the |
a9e6a4bb JK |
3361 | current language is Ada for a non-Ada objfile using GNU index. As Ada |
3362 | does not look for non-Ada symbols this function should just return. */ | |
9291a0cd TT |
3363 | } |
3364 | ||
3365 | static void | |
f8eba3c6 TT |
3366 | dw2_expand_symtabs_matching |
3367 | (struct objfile *objfile, | |
3368 | int (*file_matcher) (const char *, void *), | |
e078317b | 3369 | int (*name_matcher) (const char *, void *), |
f8eba3c6 TT |
3370 | enum search_domain kind, |
3371 | void *data) | |
9291a0cd TT |
3372 | { |
3373 | int i; | |
3374 | offset_type iter; | |
4b5246aa | 3375 | struct mapped_index *index; |
9291a0cd TT |
3376 | |
3377 | dw2_setup (objfile); | |
ae2de4f8 DE |
3378 | |
3379 | /* index_table is NULL if OBJF_READNOW. */ | |
9291a0cd TT |
3380 | if (!dwarf2_per_objfile->index_table) |
3381 | return; | |
4b5246aa | 3382 | index = dwarf2_per_objfile->index_table; |
9291a0cd | 3383 | |
7b08b9eb | 3384 | if (file_matcher != NULL) |
24c79950 TT |
3385 | { |
3386 | struct cleanup *cleanup; | |
3387 | htab_t visited_found, visited_not_found; | |
3388 | ||
f4dc4d17 DE |
3389 | dw2_build_type_unit_groups (); |
3390 | ||
24c79950 TT |
3391 | visited_found = htab_create_alloc (10, |
3392 | htab_hash_pointer, htab_eq_pointer, | |
3393 | NULL, xcalloc, xfree); | |
3394 | cleanup = make_cleanup_htab_delete (visited_found); | |
3395 | visited_not_found = htab_create_alloc (10, | |
3396 | htab_hash_pointer, htab_eq_pointer, | |
3397 | NULL, xcalloc, xfree); | |
3398 | make_cleanup_htab_delete (visited_not_found); | |
3399 | ||
3400 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
f4dc4d17 | 3401 | + dwarf2_per_objfile->n_type_unit_groups); ++i) |
24c79950 TT |
3402 | { |
3403 | int j; | |
f4dc4d17 | 3404 | struct dwarf2_per_cu_data *per_cu = dw2_get_primary_cu (i); |
24c79950 TT |
3405 | struct quick_file_names *file_data; |
3406 | void **slot; | |
7b08b9eb | 3407 | |
24c79950 | 3408 | per_cu->v.quick->mark = 0; |
3d7bb9d9 | 3409 | |
24c79950 TT |
3410 | /* We only need to look at symtabs not already expanded. */ |
3411 | if (per_cu->v.quick->symtab) | |
3412 | continue; | |
7b08b9eb | 3413 | |
24c79950 TT |
3414 | file_data = dw2_get_file_names (objfile, per_cu); |
3415 | if (file_data == NULL) | |
3416 | continue; | |
7b08b9eb | 3417 | |
24c79950 TT |
3418 | if (htab_find (visited_not_found, file_data) != NULL) |
3419 | continue; | |
3420 | else if (htab_find (visited_found, file_data) != NULL) | |
3421 | { | |
3422 | per_cu->v.quick->mark = 1; | |
3423 | continue; | |
3424 | } | |
3425 | ||
3426 | for (j = 0; j < file_data->num_file_names; ++j) | |
3427 | { | |
3428 | if (file_matcher (file_data->file_names[j], data)) | |
3429 | { | |
3430 | per_cu->v.quick->mark = 1; | |
3431 | break; | |
3432 | } | |
3433 | } | |
3434 | ||
3435 | slot = htab_find_slot (per_cu->v.quick->mark | |
3436 | ? visited_found | |
3437 | : visited_not_found, | |
3438 | file_data, INSERT); | |
3439 | *slot = file_data; | |
3440 | } | |
3441 | ||
3442 | do_cleanups (cleanup); | |
3443 | } | |
9291a0cd | 3444 | |
3876f04e | 3445 | for (iter = 0; iter < index->symbol_table_slots; ++iter) |
9291a0cd TT |
3446 | { |
3447 | offset_type idx = 2 * iter; | |
3448 | const char *name; | |
3449 | offset_type *vec, vec_len, vec_idx; | |
3450 | ||
3876f04e | 3451 | if (index->symbol_table[idx] == 0 && index->symbol_table[idx + 1] == 0) |
9291a0cd TT |
3452 | continue; |
3453 | ||
3876f04e | 3454 | name = index->constant_pool + MAYBE_SWAP (index->symbol_table[idx]); |
9291a0cd | 3455 | |
e078317b | 3456 | if (! (*name_matcher) (name, data)) |
9291a0cd TT |
3457 | continue; |
3458 | ||
3459 | /* The name was matched, now expand corresponding CUs that were | |
3460 | marked. */ | |
4b5246aa | 3461 | vec = (offset_type *) (index->constant_pool |
3876f04e | 3462 | + MAYBE_SWAP (index->symbol_table[idx + 1])); |
9291a0cd TT |
3463 | vec_len = MAYBE_SWAP (vec[0]); |
3464 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
3465 | { | |
e254ef6a | 3466 | struct dwarf2_per_cu_data *per_cu; |
156942c7 DE |
3467 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[vec_idx + 1]); |
3468 | gdb_index_symbol_kind symbol_kind = | |
3469 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3470 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
3471 | ||
3472 | /* Don't crash on bad data. */ | |
3473 | if (cu_index >= (dwarf2_per_objfile->n_comp_units | |
667e0a4b | 3474 | + dwarf2_per_objfile->n_type_units)) |
156942c7 | 3475 | continue; |
1fd400ff | 3476 | |
156942c7 DE |
3477 | /* Only check the symbol's kind if it has one. |
3478 | Indices prior to version 7 don't record it. */ | |
3479 | if (index->version >= 7) | |
3480 | { | |
3481 | switch (kind) | |
3482 | { | |
3483 | case VARIABLES_DOMAIN: | |
3484 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
3485 | continue; | |
3486 | break; | |
3487 | case FUNCTIONS_DOMAIN: | |
3488 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
3489 | continue; | |
3490 | break; | |
3491 | case TYPES_DOMAIN: | |
3492 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3493 | continue; | |
3494 | break; | |
3495 | default: | |
3496 | break; | |
3497 | } | |
3498 | } | |
3499 | ||
3500 | per_cu = dw2_get_cu (cu_index); | |
7b08b9eb | 3501 | if (file_matcher == NULL || per_cu->v.quick->mark) |
a0f42c21 | 3502 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
3503 | } |
3504 | } | |
3505 | } | |
3506 | ||
9703b513 TT |
3507 | /* A helper for dw2_find_pc_sect_symtab which finds the most specific |
3508 | symtab. */ | |
3509 | ||
3510 | static struct symtab * | |
3511 | recursively_find_pc_sect_symtab (struct symtab *symtab, CORE_ADDR pc) | |
3512 | { | |
3513 | int i; | |
3514 | ||
3515 | if (BLOCKVECTOR (symtab) != NULL | |
3516 | && blockvector_contains_pc (BLOCKVECTOR (symtab), pc)) | |
3517 | return symtab; | |
3518 | ||
a3ec0bb1 DE |
3519 | if (symtab->includes == NULL) |
3520 | return NULL; | |
3521 | ||
9703b513 TT |
3522 | for (i = 0; symtab->includes[i]; ++i) |
3523 | { | |
a3ec0bb1 | 3524 | struct symtab *s = symtab->includes[i]; |
9703b513 TT |
3525 | |
3526 | s = recursively_find_pc_sect_symtab (s, pc); | |
3527 | if (s != NULL) | |
3528 | return s; | |
3529 | } | |
3530 | ||
3531 | return NULL; | |
3532 | } | |
3533 | ||
9291a0cd TT |
3534 | static struct symtab * |
3535 | dw2_find_pc_sect_symtab (struct objfile *objfile, | |
3536 | struct minimal_symbol *msymbol, | |
3537 | CORE_ADDR pc, | |
3538 | struct obj_section *section, | |
3539 | int warn_if_readin) | |
3540 | { | |
3541 | struct dwarf2_per_cu_data *data; | |
9703b513 | 3542 | struct symtab *result; |
9291a0cd TT |
3543 | |
3544 | dw2_setup (objfile); | |
3545 | ||
3546 | if (!objfile->psymtabs_addrmap) | |
3547 | return NULL; | |
3548 | ||
3549 | data = addrmap_find (objfile->psymtabs_addrmap, pc); | |
3550 | if (!data) | |
3551 | return NULL; | |
3552 | ||
3553 | if (warn_if_readin && data->v.quick->symtab) | |
abebb8b0 | 3554 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), |
9291a0cd TT |
3555 | paddress (get_objfile_arch (objfile), pc)); |
3556 | ||
9703b513 TT |
3557 | result = recursively_find_pc_sect_symtab (dw2_instantiate_symtab (data), pc); |
3558 | gdb_assert (result != NULL); | |
3559 | return result; | |
9291a0cd TT |
3560 | } |
3561 | ||
9291a0cd | 3562 | static void |
44b13c5a | 3563 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, |
74e2f255 | 3564 | void *data, int need_fullname) |
9291a0cd TT |
3565 | { |
3566 | int i; | |
24c79950 TT |
3567 | struct cleanup *cleanup; |
3568 | htab_t visited = htab_create_alloc (10, htab_hash_pointer, htab_eq_pointer, | |
3569 | NULL, xcalloc, xfree); | |
9291a0cd | 3570 | |
24c79950 | 3571 | cleanup = make_cleanup_htab_delete (visited); |
9291a0cd | 3572 | dw2_setup (objfile); |
ae2de4f8 | 3573 | |
f4dc4d17 DE |
3574 | dw2_build_type_unit_groups (); |
3575 | ||
24c79950 TT |
3576 | /* We can ignore file names coming from already-expanded CUs. */ |
3577 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
3578 | + dwarf2_per_objfile->n_type_units); ++i) | |
3579 | { | |
3580 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); | |
3581 | ||
3582 | if (per_cu->v.quick->symtab) | |
3583 | { | |
3584 | void **slot = htab_find_slot (visited, per_cu->v.quick->file_names, | |
3585 | INSERT); | |
3586 | ||
3587 | *slot = per_cu->v.quick->file_names; | |
3588 | } | |
3589 | } | |
3590 | ||
1fd400ff | 3591 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
f4dc4d17 | 3592 | + dwarf2_per_objfile->n_type_unit_groups); ++i) |
9291a0cd TT |
3593 | { |
3594 | int j; | |
f4dc4d17 | 3595 | struct dwarf2_per_cu_data *per_cu = dw2_get_primary_cu (i); |
7b9f3c50 | 3596 | struct quick_file_names *file_data; |
24c79950 | 3597 | void **slot; |
9291a0cd | 3598 | |
3d7bb9d9 | 3599 | /* We only need to look at symtabs not already expanded. */ |
e254ef6a | 3600 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
3601 | continue; |
3602 | ||
7b9f3c50 DE |
3603 | file_data = dw2_get_file_names (objfile, per_cu); |
3604 | if (file_data == NULL) | |
9291a0cd TT |
3605 | continue; |
3606 | ||
24c79950 TT |
3607 | slot = htab_find_slot (visited, file_data, INSERT); |
3608 | if (*slot) | |
3609 | { | |
3610 | /* Already visited. */ | |
3611 | continue; | |
3612 | } | |
3613 | *slot = file_data; | |
3614 | ||
7b9f3c50 | 3615 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3616 | { |
74e2f255 DE |
3617 | const char *this_real_name; |
3618 | ||
3619 | if (need_fullname) | |
3620 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
3621 | else | |
3622 | this_real_name = NULL; | |
7b9f3c50 | 3623 | (*fun) (file_data->file_names[j], this_real_name, data); |
9291a0cd TT |
3624 | } |
3625 | } | |
24c79950 TT |
3626 | |
3627 | do_cleanups (cleanup); | |
9291a0cd TT |
3628 | } |
3629 | ||
3630 | static int | |
3631 | dw2_has_symbols (struct objfile *objfile) | |
3632 | { | |
3633 | return 1; | |
3634 | } | |
3635 | ||
3636 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
3637 | { | |
3638 | dw2_has_symbols, | |
3639 | dw2_find_last_source_symtab, | |
3640 | dw2_forget_cached_source_info, | |
f8eba3c6 | 3641 | dw2_map_symtabs_matching_filename, |
9291a0cd | 3642 | dw2_lookup_symbol, |
774b6a14 | 3643 | dw2_pre_expand_symtabs_matching, |
9291a0cd TT |
3644 | dw2_print_stats, |
3645 | dw2_dump, | |
3646 | dw2_relocate, | |
3647 | dw2_expand_symtabs_for_function, | |
3648 | dw2_expand_all_symtabs, | |
3649 | dw2_expand_symtabs_with_filename, | |
3650 | dw2_find_symbol_file, | |
40658b94 | 3651 | dw2_map_matching_symbols, |
9291a0cd TT |
3652 | dw2_expand_symtabs_matching, |
3653 | dw2_find_pc_sect_symtab, | |
9291a0cd TT |
3654 | dw2_map_symbol_filenames |
3655 | }; | |
3656 | ||
3657 | /* Initialize for reading DWARF for this objfile. Return 0 if this | |
3658 | file will use psymtabs, or 1 if using the GNU index. */ | |
3659 | ||
3660 | int | |
3661 | dwarf2_initialize_objfile (struct objfile *objfile) | |
3662 | { | |
3663 | /* If we're about to read full symbols, don't bother with the | |
3664 | indices. In this case we also don't care if some other debug | |
3665 | format is making psymtabs, because they are all about to be | |
3666 | expanded anyway. */ | |
3667 | if ((objfile->flags & OBJF_READNOW)) | |
3668 | { | |
3669 | int i; | |
3670 | ||
3671 | dwarf2_per_objfile->using_index = 1; | |
3672 | create_all_comp_units (objfile); | |
0e50663e | 3673 | create_all_type_units (objfile); |
7b9f3c50 DE |
3674 | dwarf2_per_objfile->quick_file_names_table = |
3675 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd | 3676 | |
1fd400ff | 3677 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
d467dd73 | 3678 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 3679 | { |
e254ef6a | 3680 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 3681 | |
e254ef6a DE |
3682 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
3683 | struct dwarf2_per_cu_quick_data); | |
9291a0cd TT |
3684 | } |
3685 | ||
3686 | /* Return 1 so that gdb sees the "quick" functions. However, | |
3687 | these functions will be no-ops because we will have expanded | |
3688 | all symtabs. */ | |
3689 | return 1; | |
3690 | } | |
3691 | ||
3692 | if (dwarf2_read_index (objfile)) | |
3693 | return 1; | |
3694 | ||
9291a0cd TT |
3695 | return 0; |
3696 | } | |
3697 | ||
3698 | \f | |
3699 | ||
dce234bc PP |
3700 | /* Build a partial symbol table. */ |
3701 | ||
3702 | void | |
f29dff0a | 3703 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 3704 | { |
f29dff0a | 3705 | if (objfile->global_psymbols.size == 0 && objfile->static_psymbols.size == 0) |
c906108c SS |
3706 | { |
3707 | init_psymbol_list (objfile, 1024); | |
3708 | } | |
3709 | ||
d146bf1e | 3710 | dwarf2_build_psymtabs_hard (objfile); |
c906108c | 3711 | } |
c906108c | 3712 | |
1ce1cefd DE |
3713 | /* Return the total length of the CU described by HEADER. */ |
3714 | ||
3715 | static unsigned int | |
3716 | get_cu_length (const struct comp_unit_head *header) | |
3717 | { | |
3718 | return header->initial_length_size + header->length; | |
3719 | } | |
3720 | ||
45452591 DE |
3721 | /* Return TRUE if OFFSET is within CU_HEADER. */ |
3722 | ||
3723 | static inline int | |
b64f50a1 | 3724 | offset_in_cu_p (const struct comp_unit_head *cu_header, sect_offset offset) |
45452591 | 3725 | { |
b64f50a1 | 3726 | sect_offset bottom = { cu_header->offset.sect_off }; |
1ce1cefd | 3727 | sect_offset top = { cu_header->offset.sect_off + get_cu_length (cu_header) }; |
9a619af0 | 3728 | |
b64f50a1 | 3729 | return (offset.sect_off >= bottom.sect_off && offset.sect_off < top.sect_off); |
45452591 DE |
3730 | } |
3731 | ||
3b80fe9b DE |
3732 | /* Find the base address of the compilation unit for range lists and |
3733 | location lists. It will normally be specified by DW_AT_low_pc. | |
3734 | In DWARF-3 draft 4, the base address could be overridden by | |
3735 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
3736 | compilation units with discontinuous ranges. */ | |
3737 | ||
3738 | static void | |
3739 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
3740 | { | |
3741 | struct attribute *attr; | |
3742 | ||
3743 | cu->base_known = 0; | |
3744 | cu->base_address = 0; | |
3745 | ||
3746 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
3747 | if (attr) | |
3748 | { | |
3749 | cu->base_address = DW_ADDR (attr); | |
3750 | cu->base_known = 1; | |
3751 | } | |
3752 | else | |
3753 | { | |
3754 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
3755 | if (attr) | |
3756 | { | |
3757 | cu->base_address = DW_ADDR (attr); | |
3758 | cu->base_known = 1; | |
3759 | } | |
3760 | } | |
3761 | } | |
3762 | ||
93311388 DE |
3763 | /* Read in the comp unit header information from the debug_info at info_ptr. |
3764 | NOTE: This leaves members offset, first_die_offset to be filled in | |
3765 | by the caller. */ | |
107d2387 | 3766 | |
fe1b8b76 | 3767 | static gdb_byte * |
107d2387 | 3768 | read_comp_unit_head (struct comp_unit_head *cu_header, |
fe1b8b76 | 3769 | gdb_byte *info_ptr, bfd *abfd) |
107d2387 AC |
3770 | { |
3771 | int signed_addr; | |
891d2f0b | 3772 | unsigned int bytes_read; |
c764a876 DE |
3773 | |
3774 | cu_header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
3775 | cu_header->initial_length_size = bytes_read; | |
3776 | cu_header->offset_size = (bytes_read == 4) ? 4 : 8; | |
613e1657 | 3777 | info_ptr += bytes_read; |
107d2387 AC |
3778 | cu_header->version = read_2_bytes (abfd, info_ptr); |
3779 | info_ptr += 2; | |
b64f50a1 JK |
3780 | cu_header->abbrev_offset.sect_off = read_offset (abfd, info_ptr, cu_header, |
3781 | &bytes_read); | |
613e1657 | 3782 | info_ptr += bytes_read; |
107d2387 AC |
3783 | cu_header->addr_size = read_1_byte (abfd, info_ptr); |
3784 | info_ptr += 1; | |
3785 | signed_addr = bfd_get_sign_extend_vma (abfd); | |
3786 | if (signed_addr < 0) | |
8e65ff28 | 3787 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3788 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 | 3789 | cu_header->signed_addr_p = signed_addr; |
c764a876 | 3790 | |
107d2387 AC |
3791 | return info_ptr; |
3792 | } | |
3793 | ||
36586728 TT |
3794 | /* Helper function that returns the proper abbrev section for |
3795 | THIS_CU. */ | |
3796 | ||
3797 | static struct dwarf2_section_info * | |
3798 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
3799 | { | |
3800 | struct dwarf2_section_info *abbrev; | |
3801 | ||
3802 | if (this_cu->is_dwz) | |
3803 | abbrev = &dwarf2_get_dwz_file ()->abbrev; | |
3804 | else | |
3805 | abbrev = &dwarf2_per_objfile->abbrev; | |
3806 | ||
3807 | return abbrev; | |
3808 | } | |
3809 | ||
9ff913ba DE |
3810 | /* Subroutine of read_and_check_comp_unit_head and |
3811 | read_and_check_type_unit_head to simplify them. | |
3812 | Perform various error checking on the header. */ | |
3813 | ||
3814 | static void | |
3815 | error_check_comp_unit_head (struct comp_unit_head *header, | |
4bdcc0c1 DE |
3816 | struct dwarf2_section_info *section, |
3817 | struct dwarf2_section_info *abbrev_section) | |
9ff913ba DE |
3818 | { |
3819 | bfd *abfd = section->asection->owner; | |
3820 | const char *filename = bfd_get_filename (abfd); | |
3821 | ||
3822 | if (header->version != 2 && header->version != 3 && header->version != 4) | |
3823 | error (_("Dwarf Error: wrong version in compilation unit header " | |
3824 | "(is %d, should be 2, 3, or 4) [in module %s]"), header->version, | |
3825 | filename); | |
3826 | ||
b64f50a1 | 3827 | if (header->abbrev_offset.sect_off |
36586728 | 3828 | >= dwarf2_section_size (dwarf2_per_objfile->objfile, abbrev_section)) |
9ff913ba DE |
3829 | error (_("Dwarf Error: bad offset (0x%lx) in compilation unit header " |
3830 | "(offset 0x%lx + 6) [in module %s]"), | |
b64f50a1 | 3831 | (long) header->abbrev_offset.sect_off, (long) header->offset.sect_off, |
9ff913ba DE |
3832 | filename); |
3833 | ||
3834 | /* Cast to unsigned long to use 64-bit arithmetic when possible to | |
3835 | avoid potential 32-bit overflow. */ | |
1ce1cefd | 3836 | if (((unsigned long) header->offset.sect_off + get_cu_length (header)) |
9ff913ba DE |
3837 | > section->size) |
3838 | error (_("Dwarf Error: bad length (0x%lx) in compilation unit header " | |
3839 | "(offset 0x%lx + 0) [in module %s]"), | |
b64f50a1 | 3840 | (long) header->length, (long) header->offset.sect_off, |
9ff913ba DE |
3841 | filename); |
3842 | } | |
3843 | ||
3844 | /* Read in a CU/TU header and perform some basic error checking. | |
3845 | The contents of the header are stored in HEADER. | |
3846 | The result is a pointer to the start of the first DIE. */ | |
adabb602 | 3847 | |
fe1b8b76 | 3848 | static gdb_byte * |
9ff913ba DE |
3849 | read_and_check_comp_unit_head (struct comp_unit_head *header, |
3850 | struct dwarf2_section_info *section, | |
4bdcc0c1 | 3851 | struct dwarf2_section_info *abbrev_section, |
9ff913ba DE |
3852 | gdb_byte *info_ptr, |
3853 | int is_debug_types_section) | |
72bf9492 | 3854 | { |
fe1b8b76 | 3855 | gdb_byte *beg_of_comp_unit = info_ptr; |
9ff913ba | 3856 | bfd *abfd = section->asection->owner; |
72bf9492 | 3857 | |
b64f50a1 | 3858 | header->offset.sect_off = beg_of_comp_unit - section->buffer; |
adabb602 | 3859 | |
72bf9492 DJ |
3860 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); |
3861 | ||
460c1c54 CC |
3862 | /* If we're reading a type unit, skip over the signature and |
3863 | type_offset fields. */ | |
b0df02fd | 3864 | if (is_debug_types_section) |
460c1c54 CC |
3865 | info_ptr += 8 /*signature*/ + header->offset_size; |
3866 | ||
b64f50a1 | 3867 | header->first_die_offset.cu_off = info_ptr - beg_of_comp_unit; |
adabb602 | 3868 | |
4bdcc0c1 | 3869 | error_check_comp_unit_head (header, section, abbrev_section); |
72bf9492 DJ |
3870 | |
3871 | return info_ptr; | |
3872 | } | |
3873 | ||
348e048f DE |
3874 | /* Read in the types comp unit header information from .debug_types entry at |
3875 | types_ptr. The result is a pointer to one past the end of the header. */ | |
3876 | ||
3877 | static gdb_byte * | |
9ff913ba DE |
3878 | read_and_check_type_unit_head (struct comp_unit_head *header, |
3879 | struct dwarf2_section_info *section, | |
4bdcc0c1 | 3880 | struct dwarf2_section_info *abbrev_section, |
9ff913ba | 3881 | gdb_byte *info_ptr, |
dee91e82 DE |
3882 | ULONGEST *signature, |
3883 | cu_offset *type_offset_in_tu) | |
348e048f | 3884 | { |
9ff913ba DE |
3885 | gdb_byte *beg_of_comp_unit = info_ptr; |
3886 | bfd *abfd = section->asection->owner; | |
348e048f | 3887 | |
b64f50a1 | 3888 | header->offset.sect_off = beg_of_comp_unit - section->buffer; |
348e048f | 3889 | |
9ff913ba | 3890 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); |
348e048f | 3891 | |
9ff913ba DE |
3892 | /* If we're reading a type unit, skip over the signature and |
3893 | type_offset fields. */ | |
3894 | if (signature != NULL) | |
3895 | *signature = read_8_bytes (abfd, info_ptr); | |
3896 | info_ptr += 8; | |
dee91e82 DE |
3897 | if (type_offset_in_tu != NULL) |
3898 | type_offset_in_tu->cu_off = read_offset_1 (abfd, info_ptr, | |
3899 | header->offset_size); | |
9ff913ba DE |
3900 | info_ptr += header->offset_size; |
3901 | ||
b64f50a1 | 3902 | header->first_die_offset.cu_off = info_ptr - beg_of_comp_unit; |
348e048f | 3903 | |
4bdcc0c1 | 3904 | error_check_comp_unit_head (header, section, abbrev_section); |
9ff913ba DE |
3905 | |
3906 | return info_ptr; | |
348e048f DE |
3907 | } |
3908 | ||
f4dc4d17 DE |
3909 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
3910 | ||
3911 | static sect_offset | |
3912 | read_abbrev_offset (struct dwarf2_section_info *section, | |
3913 | sect_offset offset) | |
3914 | { | |
3915 | bfd *abfd = section->asection->owner; | |
3916 | gdb_byte *info_ptr; | |
3917 | unsigned int length, initial_length_size, offset_size; | |
3918 | sect_offset abbrev_offset; | |
3919 | ||
3920 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
3921 | info_ptr = section->buffer + offset.sect_off; | |
3922 | length = read_initial_length (abfd, info_ptr, &initial_length_size); | |
3923 | offset_size = initial_length_size == 4 ? 4 : 8; | |
3924 | info_ptr += initial_length_size + 2 /*version*/; | |
3925 | abbrev_offset.sect_off = read_offset_1 (abfd, info_ptr, offset_size); | |
3926 | return abbrev_offset; | |
3927 | } | |
3928 | ||
aaa75496 JB |
3929 | /* Allocate a new partial symtab for file named NAME and mark this new |
3930 | partial symtab as being an include of PST. */ | |
3931 | ||
3932 | static void | |
3933 | dwarf2_create_include_psymtab (char *name, struct partial_symtab *pst, | |
3934 | struct objfile *objfile) | |
3935 | { | |
3936 | struct partial_symtab *subpst = allocate_psymtab (name, objfile); | |
3937 | ||
3938 | subpst->section_offsets = pst->section_offsets; | |
3939 | subpst->textlow = 0; | |
3940 | subpst->texthigh = 0; | |
3941 | ||
3942 | subpst->dependencies = (struct partial_symtab **) | |
3943 | obstack_alloc (&objfile->objfile_obstack, | |
3944 | sizeof (struct partial_symtab *)); | |
3945 | subpst->dependencies[0] = pst; | |
3946 | subpst->number_of_dependencies = 1; | |
3947 | ||
3948 | subpst->globals_offset = 0; | |
3949 | subpst->n_global_syms = 0; | |
3950 | subpst->statics_offset = 0; | |
3951 | subpst->n_static_syms = 0; | |
3952 | subpst->symtab = NULL; | |
3953 | subpst->read_symtab = pst->read_symtab; | |
3954 | subpst->readin = 0; | |
3955 | ||
3956 | /* No private part is necessary for include psymtabs. This property | |
3957 | can be used to differentiate between such include psymtabs and | |
10b3939b | 3958 | the regular ones. */ |
58a9656e | 3959 | subpst->read_symtab_private = NULL; |
aaa75496 JB |
3960 | } |
3961 | ||
3962 | /* Read the Line Number Program data and extract the list of files | |
3963 | included by the source file represented by PST. Build an include | |
d85a05f0 | 3964 | partial symtab for each of these included files. */ |
aaa75496 JB |
3965 | |
3966 | static void | |
3967 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 DE |
3968 | struct die_info *die, |
3969 | struct partial_symtab *pst) | |
aaa75496 | 3970 | { |
d85a05f0 DJ |
3971 | struct line_header *lh = NULL; |
3972 | struct attribute *attr; | |
aaa75496 | 3973 | |
d85a05f0 DJ |
3974 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
3975 | if (attr) | |
3019eac3 | 3976 | lh = dwarf_decode_line_header (DW_UNSND (attr), cu); |
aaa75496 JB |
3977 | if (lh == NULL) |
3978 | return; /* No linetable, so no includes. */ | |
3979 | ||
c6da4cef | 3980 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). */ |
f3f5162e | 3981 | dwarf_decode_lines (lh, pst->dirname, cu, pst, 1); |
aaa75496 JB |
3982 | |
3983 | free_line_header (lh); | |
3984 | } | |
3985 | ||
348e048f | 3986 | static hashval_t |
52dc124a | 3987 | hash_signatured_type (const void *item) |
348e048f | 3988 | { |
52dc124a | 3989 | const struct signatured_type *sig_type = item; |
9a619af0 | 3990 | |
348e048f | 3991 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 3992 | return sig_type->signature; |
348e048f DE |
3993 | } |
3994 | ||
3995 | static int | |
52dc124a | 3996 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f DE |
3997 | { |
3998 | const struct signatured_type *lhs = item_lhs; | |
3999 | const struct signatured_type *rhs = item_rhs; | |
9a619af0 | 4000 | |
348e048f DE |
4001 | return lhs->signature == rhs->signature; |
4002 | } | |
4003 | ||
1fd400ff TT |
4004 | /* Allocate a hash table for signatured types. */ |
4005 | ||
4006 | static htab_t | |
673bfd45 | 4007 | allocate_signatured_type_table (struct objfile *objfile) |
1fd400ff TT |
4008 | { |
4009 | return htab_create_alloc_ex (41, | |
52dc124a DE |
4010 | hash_signatured_type, |
4011 | eq_signatured_type, | |
1fd400ff TT |
4012 | NULL, |
4013 | &objfile->objfile_obstack, | |
4014 | hashtab_obstack_allocate, | |
4015 | dummy_obstack_deallocate); | |
4016 | } | |
4017 | ||
d467dd73 | 4018 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
4019 | |
4020 | static int | |
d467dd73 | 4021 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff TT |
4022 | { |
4023 | struct signatured_type *sigt = *slot; | |
b4dd5633 | 4024 | struct signatured_type ***datap = datum; |
1fd400ff | 4025 | |
b4dd5633 | 4026 | **datap = sigt; |
1fd400ff TT |
4027 | ++*datap; |
4028 | ||
4029 | return 1; | |
4030 | } | |
4031 | ||
3019eac3 DE |
4032 | /* Create the hash table of all entries in the .debug_types section. |
4033 | DWO_FILE is a pointer to the DWO file for .debug_types.dwo, NULL otherwise. | |
4034 | The result is a pointer to the hash table or NULL if there are | |
4035 | no types. */ | |
348e048f | 4036 | |
3019eac3 DE |
4037 | static htab_t |
4038 | create_debug_types_hash_table (struct dwo_file *dwo_file, | |
4039 | VEC (dwarf2_section_info_def) *types) | |
348e048f | 4040 | { |
3019eac3 | 4041 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8b70b953 | 4042 | htab_t types_htab = NULL; |
8b70b953 TT |
4043 | int ix; |
4044 | struct dwarf2_section_info *section; | |
4bdcc0c1 | 4045 | struct dwarf2_section_info *abbrev_section; |
348e048f | 4046 | |
3019eac3 DE |
4047 | if (VEC_empty (dwarf2_section_info_def, types)) |
4048 | return NULL; | |
348e048f | 4049 | |
4bdcc0c1 DE |
4050 | abbrev_section = (dwo_file != NULL |
4051 | ? &dwo_file->sections.abbrev | |
4052 | : &dwarf2_per_objfile->abbrev); | |
4053 | ||
09406207 DE |
4054 | if (dwarf2_read_debug) |
4055 | fprintf_unfiltered (gdb_stdlog, "Reading .debug_types%s for %s:\n", | |
4056 | dwo_file ? ".dwo" : "", | |
4057 | bfd_get_filename (abbrev_section->asection->owner)); | |
4058 | ||
8b70b953 | 4059 | for (ix = 0; |
3019eac3 | 4060 | VEC_iterate (dwarf2_section_info_def, types, ix, section); |
8b70b953 TT |
4061 | ++ix) |
4062 | { | |
3019eac3 | 4063 | bfd *abfd; |
8b70b953 | 4064 | gdb_byte *info_ptr, *end_ptr; |
36586728 | 4065 | struct dwarf2_section_info *abbrev_section; |
348e048f | 4066 | |
8b70b953 TT |
4067 | dwarf2_read_section (objfile, section); |
4068 | info_ptr = section->buffer; | |
348e048f | 4069 | |
8b70b953 TT |
4070 | if (info_ptr == NULL) |
4071 | continue; | |
348e048f | 4072 | |
3019eac3 DE |
4073 | /* We can't set abfd until now because the section may be empty or |
4074 | not present, in which case section->asection will be NULL. */ | |
4075 | abfd = section->asection->owner; | |
4076 | ||
36586728 TT |
4077 | if (dwo_file) |
4078 | abbrev_section = &dwo_file->sections.abbrev; | |
4079 | else | |
4080 | abbrev_section = &dwarf2_per_objfile->abbrev; | |
4081 | ||
8b70b953 | 4082 | if (types_htab == NULL) |
3019eac3 DE |
4083 | { |
4084 | if (dwo_file) | |
4085 | types_htab = allocate_dwo_unit_table (objfile); | |
4086 | else | |
4087 | types_htab = allocate_signatured_type_table (objfile); | |
4088 | } | |
348e048f | 4089 | |
dee91e82 DE |
4090 | /* We don't use init_cutu_and_read_dies_simple, or some such, here |
4091 | because we don't need to read any dies: the signature is in the | |
4092 | header. */ | |
8b70b953 TT |
4093 | |
4094 | end_ptr = info_ptr + section->size; | |
4095 | while (info_ptr < end_ptr) | |
4096 | { | |
b64f50a1 | 4097 | sect_offset offset; |
3019eac3 | 4098 | cu_offset type_offset_in_tu; |
8b70b953 | 4099 | ULONGEST signature; |
52dc124a | 4100 | struct signatured_type *sig_type; |
3019eac3 | 4101 | struct dwo_unit *dwo_tu; |
8b70b953 TT |
4102 | void **slot; |
4103 | gdb_byte *ptr = info_ptr; | |
9ff913ba | 4104 | struct comp_unit_head header; |
dee91e82 | 4105 | unsigned int length; |
348e048f | 4106 | |
b64f50a1 | 4107 | offset.sect_off = ptr - section->buffer; |
348e048f | 4108 | |
8b70b953 | 4109 | /* We need to read the type's signature in order to build the hash |
9ff913ba | 4110 | table, but we don't need anything else just yet. */ |
348e048f | 4111 | |
4bdcc0c1 DE |
4112 | ptr = read_and_check_type_unit_head (&header, section, |
4113 | abbrev_section, ptr, | |
3019eac3 | 4114 | &signature, &type_offset_in_tu); |
6caca83c | 4115 | |
1ce1cefd | 4116 | length = get_cu_length (&header); |
dee91e82 | 4117 | |
6caca83c | 4118 | /* Skip dummy type units. */ |
dee91e82 DE |
4119 | if (ptr >= info_ptr + length |
4120 | || peek_abbrev_code (abfd, ptr) == 0) | |
6caca83c | 4121 | { |
1ce1cefd | 4122 | info_ptr += length; |
6caca83c CC |
4123 | continue; |
4124 | } | |
8b70b953 | 4125 | |
3019eac3 DE |
4126 | if (dwo_file) |
4127 | { | |
4128 | sig_type = NULL; | |
4129 | dwo_tu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4130 | struct dwo_unit); | |
4131 | dwo_tu->dwo_file = dwo_file; | |
4132 | dwo_tu->signature = signature; | |
4133 | dwo_tu->type_offset_in_tu = type_offset_in_tu; | |
4134 | dwo_tu->info_or_types_section = section; | |
4135 | dwo_tu->offset = offset; | |
4136 | dwo_tu->length = length; | |
4137 | } | |
4138 | else | |
4139 | { | |
4140 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
4141 | The real type_offset is in the DWO file. */ | |
4142 | dwo_tu = NULL; | |
4143 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4144 | struct signatured_type); | |
4145 | sig_type->signature = signature; | |
4146 | sig_type->type_offset_in_tu = type_offset_in_tu; | |
4147 | sig_type->per_cu.objfile = objfile; | |
4148 | sig_type->per_cu.is_debug_types = 1; | |
4149 | sig_type->per_cu.info_or_types_section = section; | |
4150 | sig_type->per_cu.offset = offset; | |
4151 | sig_type->per_cu.length = length; | |
4152 | } | |
8b70b953 | 4153 | |
3019eac3 DE |
4154 | slot = htab_find_slot (types_htab, |
4155 | dwo_file ? (void*) dwo_tu : (void *) sig_type, | |
4156 | INSERT); | |
8b70b953 TT |
4157 | gdb_assert (slot != NULL); |
4158 | if (*slot != NULL) | |
4159 | { | |
3019eac3 DE |
4160 | sect_offset dup_offset; |
4161 | ||
4162 | if (dwo_file) | |
4163 | { | |
4164 | const struct dwo_unit *dup_tu = *slot; | |
4165 | ||
4166 | dup_offset = dup_tu->offset; | |
4167 | } | |
4168 | else | |
4169 | { | |
4170 | const struct signatured_type *dup_tu = *slot; | |
4171 | ||
4172 | dup_offset = dup_tu->per_cu.offset; | |
4173 | } | |
b3c8eb43 | 4174 | |
8b70b953 TT |
4175 | complaint (&symfile_complaints, |
4176 | _("debug type entry at offset 0x%x is duplicate to the " | |
4177 | "entry at offset 0x%x, signature 0x%s"), | |
3019eac3 | 4178 | offset.sect_off, dup_offset.sect_off, |
8b70b953 | 4179 | phex (signature, sizeof (signature))); |
8b70b953 | 4180 | } |
3019eac3 | 4181 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; |
348e048f | 4182 | |
09406207 | 4183 | if (dwarf2_read_debug) |
8b70b953 | 4184 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, signature 0x%s\n", |
b64f50a1 JK |
4185 | offset.sect_off, |
4186 | phex (signature, sizeof (signature))); | |
348e048f | 4187 | |
dee91e82 | 4188 | info_ptr += length; |
8b70b953 | 4189 | } |
348e048f DE |
4190 | } |
4191 | ||
3019eac3 DE |
4192 | return types_htab; |
4193 | } | |
4194 | ||
4195 | /* Create the hash table of all entries in the .debug_types section, | |
4196 | and initialize all_type_units. | |
4197 | The result is zero if there is an error (e.g. missing .debug_types section), | |
4198 | otherwise non-zero. */ | |
4199 | ||
4200 | static int | |
4201 | create_all_type_units (struct objfile *objfile) | |
4202 | { | |
4203 | htab_t types_htab; | |
b4dd5633 | 4204 | struct signatured_type **iter; |
3019eac3 DE |
4205 | |
4206 | types_htab = create_debug_types_hash_table (NULL, dwarf2_per_objfile->types); | |
4207 | if (types_htab == NULL) | |
4208 | { | |
4209 | dwarf2_per_objfile->signatured_types = NULL; | |
4210 | return 0; | |
4211 | } | |
4212 | ||
348e048f DE |
4213 | dwarf2_per_objfile->signatured_types = types_htab; |
4214 | ||
d467dd73 DE |
4215 | dwarf2_per_objfile->n_type_units = htab_elements (types_htab); |
4216 | dwarf2_per_objfile->all_type_units | |
1fd400ff | 4217 | = obstack_alloc (&objfile->objfile_obstack, |
d467dd73 | 4218 | dwarf2_per_objfile->n_type_units |
b4dd5633 | 4219 | * sizeof (struct signatured_type *)); |
d467dd73 DE |
4220 | iter = &dwarf2_per_objfile->all_type_units[0]; |
4221 | htab_traverse_noresize (types_htab, add_signatured_type_cu_to_table, &iter); | |
4222 | gdb_assert (iter - &dwarf2_per_objfile->all_type_units[0] | |
4223 | == dwarf2_per_objfile->n_type_units); | |
1fd400ff | 4224 | |
348e048f DE |
4225 | return 1; |
4226 | } | |
4227 | ||
380bca97 | 4228 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
e319fa28 | 4229 | Returns NULL if signature SIG is not present in the table. */ |
348e048f DE |
4230 | |
4231 | static struct signatured_type * | |
e319fa28 | 4232 | lookup_signatured_type (ULONGEST sig) |
348e048f DE |
4233 | { |
4234 | struct signatured_type find_entry, *entry; | |
4235 | ||
4236 | if (dwarf2_per_objfile->signatured_types == NULL) | |
4237 | { | |
4238 | complaint (&symfile_complaints, | |
55f1336d | 4239 | _("missing `.debug_types' section for DW_FORM_ref_sig8 die")); |
dcc07052 | 4240 | return NULL; |
348e048f DE |
4241 | } |
4242 | ||
4243 | find_entry.signature = sig; | |
4244 | entry = htab_find (dwarf2_per_objfile->signatured_types, &find_entry); | |
4245 | return entry; | |
4246 | } | |
42e7ad6c DE |
4247 | \f |
4248 | /* Low level DIE reading support. */ | |
348e048f | 4249 | |
d85a05f0 DJ |
4250 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
4251 | ||
4252 | static void | |
4253 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 4254 | struct dwarf2_cu *cu, |
3019eac3 DE |
4255 | struct dwarf2_section_info *section, |
4256 | struct dwo_file *dwo_file) | |
d85a05f0 | 4257 | { |
fceca515 | 4258 | gdb_assert (section->readin && section->buffer != NULL); |
dee91e82 | 4259 | reader->abfd = section->asection->owner; |
d85a05f0 | 4260 | reader->cu = cu; |
3019eac3 | 4261 | reader->dwo_file = dwo_file; |
dee91e82 DE |
4262 | reader->die_section = section; |
4263 | reader->buffer = section->buffer; | |
f664829e | 4264 | reader->buffer_end = section->buffer + section->size; |
d85a05f0 DJ |
4265 | } |
4266 | ||
fd820528 | 4267 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 4268 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 4269 | |
f4dc4d17 DE |
4270 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
4271 | Otherwise the table specified in the comp unit header is read in and used. | |
4272 | This is an optimization for when we already have the abbrev table. | |
4273 | ||
dee91e82 DE |
4274 | If USE_EXISTING_CU is non-zero, and THIS_CU->cu is non-NULL, then use it. |
4275 | Otherwise, a new CU is allocated with xmalloc. | |
4276 | ||
4277 | If KEEP is non-zero, then if we allocated a dwarf2_cu we add it to | |
4278 | read_in_chain. Otherwise the dwarf2_cu data is freed at the end. | |
4279 | ||
4280 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
fd820528 | 4281 | linker) then DIE_READER_FUNC will not get called. */ |
aaa75496 | 4282 | |
70221824 | 4283 | static void |
fd820528 | 4284 | init_cutu_and_read_dies (struct dwarf2_per_cu_data *this_cu, |
f4dc4d17 | 4285 | struct abbrev_table *abbrev_table, |
fd820528 DE |
4286 | int use_existing_cu, int keep, |
4287 | die_reader_func_ftype *die_reader_func, | |
4288 | void *data) | |
c906108c | 4289 | { |
dee91e82 | 4290 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 DE |
4291 | struct dwarf2_section_info *section = this_cu->info_or_types_section; |
4292 | bfd *abfd = section->asection->owner; | |
dee91e82 DE |
4293 | struct dwarf2_cu *cu; |
4294 | gdb_byte *begin_info_ptr, *info_ptr; | |
4295 | struct die_reader_specs reader; | |
d85a05f0 | 4296 | struct die_info *comp_unit_die; |
dee91e82 | 4297 | int has_children; |
d85a05f0 | 4298 | struct attribute *attr; |
dee91e82 DE |
4299 | struct cleanup *cleanups, *free_cu_cleanup = NULL; |
4300 | struct signatured_type *sig_type = NULL; | |
4bdcc0c1 | 4301 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
4302 | /* Non-zero if CU currently points to a DWO file and we need to |
4303 | reread it. When this happens we need to reread the skeleton die | |
4304 | before we can reread the DWO file. */ | |
4305 | int rereading_dwo_cu = 0; | |
c906108c | 4306 | |
09406207 DE |
4307 | if (dwarf2_die_debug) |
4308 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset 0x%x\n", | |
4309 | this_cu->is_debug_types ? "type" : "comp", | |
4310 | this_cu->offset.sect_off); | |
4311 | ||
dee91e82 DE |
4312 | if (use_existing_cu) |
4313 | gdb_assert (keep); | |
23745b47 | 4314 | |
dee91e82 DE |
4315 | cleanups = make_cleanup (null_cleanup, NULL); |
4316 | ||
4317 | /* This is cheap if the section is already read in. */ | |
4318 | dwarf2_read_section (objfile, section); | |
4319 | ||
4320 | begin_info_ptr = info_ptr = section->buffer + this_cu->offset.sect_off; | |
36586728 TT |
4321 | |
4322 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 DE |
4323 | |
4324 | if (use_existing_cu && this_cu->cu != NULL) | |
4325 | { | |
4326 | cu = this_cu->cu; | |
42e7ad6c DE |
4327 | |
4328 | /* If this CU is from a DWO file we need to start over, we need to | |
4329 | refetch the attributes from the skeleton CU. | |
4330 | This could be optimized by retrieving those attributes from when we | |
4331 | were here the first time: the previous comp_unit_die was stored in | |
4332 | comp_unit_obstack. But there's no data yet that we need this | |
4333 | optimization. */ | |
4334 | if (cu->dwo_unit != NULL) | |
4335 | rereading_dwo_cu = 1; | |
dee91e82 DE |
4336 | } |
4337 | else | |
4338 | { | |
4339 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
4340 | gdb_assert (this_cu->cu == NULL); | |
4341 | ||
4342 | cu = xmalloc (sizeof (*cu)); | |
4343 | init_one_comp_unit (cu, this_cu); | |
4344 | ||
4345 | /* If an error occurs while loading, release our storage. */ | |
4346 | free_cu_cleanup = make_cleanup (free_heap_comp_unit, cu); | |
42e7ad6c | 4347 | } |
dee91e82 | 4348 | |
42e7ad6c DE |
4349 | if (cu->header.first_die_offset.cu_off != 0 && ! rereading_dwo_cu) |
4350 | { | |
4351 | /* We already have the header, there's no need to read it in again. */ | |
4352 | info_ptr += cu->header.first_die_offset.cu_off; | |
4353 | } | |
4354 | else | |
4355 | { | |
3019eac3 | 4356 | if (this_cu->is_debug_types) |
dee91e82 DE |
4357 | { |
4358 | ULONGEST signature; | |
42e7ad6c | 4359 | cu_offset type_offset_in_tu; |
dee91e82 | 4360 | |
4bdcc0c1 DE |
4361 | info_ptr = read_and_check_type_unit_head (&cu->header, section, |
4362 | abbrev_section, info_ptr, | |
42e7ad6c DE |
4363 | &signature, |
4364 | &type_offset_in_tu); | |
dee91e82 | 4365 | |
42e7ad6c DE |
4366 | /* Since per_cu is the first member of struct signatured_type, |
4367 | we can go from a pointer to one to a pointer to the other. */ | |
4368 | sig_type = (struct signatured_type *) this_cu; | |
4369 | gdb_assert (sig_type->signature == signature); | |
4370 | gdb_assert (sig_type->type_offset_in_tu.cu_off | |
4371 | == type_offset_in_tu.cu_off); | |
dee91e82 DE |
4372 | gdb_assert (this_cu->offset.sect_off == cu->header.offset.sect_off); |
4373 | ||
42e7ad6c DE |
4374 | /* LENGTH has not been set yet for type units if we're |
4375 | using .gdb_index. */ | |
1ce1cefd | 4376 | this_cu->length = get_cu_length (&cu->header); |
3019eac3 DE |
4377 | |
4378 | /* Establish the type offset that can be used to lookup the type. */ | |
4379 | sig_type->type_offset_in_section.sect_off = | |
4380 | this_cu->offset.sect_off + sig_type->type_offset_in_tu.cu_off; | |
dee91e82 DE |
4381 | } |
4382 | else | |
4383 | { | |
4bdcc0c1 DE |
4384 | info_ptr = read_and_check_comp_unit_head (&cu->header, section, |
4385 | abbrev_section, | |
4386 | info_ptr, 0); | |
dee91e82 DE |
4387 | |
4388 | gdb_assert (this_cu->offset.sect_off == cu->header.offset.sect_off); | |
1ce1cefd | 4389 | gdb_assert (this_cu->length == get_cu_length (&cu->header)); |
dee91e82 DE |
4390 | } |
4391 | } | |
10b3939b | 4392 | |
6caca83c | 4393 | /* Skip dummy compilation units. */ |
dee91e82 | 4394 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c CC |
4395 | || peek_abbrev_code (abfd, info_ptr) == 0) |
4396 | { | |
dee91e82 | 4397 | do_cleanups (cleanups); |
21b2bd31 | 4398 | return; |
6caca83c CC |
4399 | } |
4400 | ||
433df2d4 DE |
4401 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
4402 | And if we need to read them now, make sure they're freed when we're | |
42e7ad6c DE |
4403 | done. Note that it's important that if the CU had an abbrev table |
4404 | on entry we don't free it when we're done: Somewhere up the call stack | |
4405 | it may be in use. */ | |
f4dc4d17 DE |
4406 | if (abbrev_table != NULL) |
4407 | { | |
4408 | gdb_assert (cu->abbrev_table == NULL); | |
4409 | gdb_assert (cu->header.abbrev_offset.sect_off | |
4410 | == abbrev_table->offset.sect_off); | |
4411 | cu->abbrev_table = abbrev_table; | |
4412 | } | |
4413 | else if (cu->abbrev_table == NULL) | |
dee91e82 | 4414 | { |
4bdcc0c1 | 4415 | dwarf2_read_abbrevs (cu, abbrev_section); |
dee91e82 DE |
4416 | make_cleanup (dwarf2_free_abbrev_table, cu); |
4417 | } | |
42e7ad6c DE |
4418 | else if (rereading_dwo_cu) |
4419 | { | |
4420 | dwarf2_free_abbrev_table (cu); | |
4421 | dwarf2_read_abbrevs (cu, abbrev_section); | |
4422 | } | |
af703f96 | 4423 | |
dee91e82 | 4424 | /* Read the top level CU/TU die. */ |
3019eac3 | 4425 | init_cu_die_reader (&reader, cu, section, NULL); |
dee91e82 | 4426 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
93311388 | 4427 | |
3019eac3 DE |
4428 | /* If we have a DWO stub, process it and then read in the DWO file. |
4429 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains | |
4430 | a DWO CU, that this test will fail. */ | |
4431 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); | |
4432 | if (attr) | |
4433 | { | |
4434 | char *dwo_name = DW_STRING (attr); | |
42e7ad6c | 4435 | const char *comp_dir_string; |
3019eac3 DE |
4436 | struct dwo_unit *dwo_unit; |
4437 | ULONGEST signature; /* Or dwo_id. */ | |
42e7ad6c | 4438 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; |
3019eac3 | 4439 | int i,num_extra_attrs; |
4bdcc0c1 | 4440 | struct dwarf2_section_info *dwo_abbrev_section; |
3019eac3 DE |
4441 | |
4442 | if (has_children) | |
4443 | error (_("Dwarf Error: compilation unit with DW_AT_GNU_dwo_name" | |
4444 | " has children (offset 0x%x) [in module %s]"), | |
4445 | this_cu->offset.sect_off, bfd_get_filename (abfd)); | |
4446 | ||
4447 | /* These attributes aren't processed until later: | |
4448 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
4449 | However, the attribute is found in the stub which we won't have later. | |
4450 | In order to not impose this complication on the rest of the code, | |
4451 | we read them here and copy them to the DWO CU/TU die. */ | |
3019eac3 DE |
4452 | |
4453 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
4454 | DWO file. */ | |
42e7ad6c | 4455 | stmt_list = NULL; |
3019eac3 DE |
4456 | if (! this_cu->is_debug_types) |
4457 | stmt_list = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); | |
4458 | low_pc = dwarf2_attr (comp_unit_die, DW_AT_low_pc, cu); | |
4459 | high_pc = dwarf2_attr (comp_unit_die, DW_AT_high_pc, cu); | |
4460 | ranges = dwarf2_attr (comp_unit_die, DW_AT_ranges, cu); | |
42e7ad6c | 4461 | comp_dir = dwarf2_attr (comp_unit_die, DW_AT_comp_dir, cu); |
3019eac3 DE |
4462 | |
4463 | /* There should be a DW_AT_addr_base attribute here (if needed). | |
4464 | We need the value before we can process DW_FORM_GNU_addr_index. */ | |
4465 | cu->addr_base = 0; | |
3019eac3 DE |
4466 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_addr_base, cu); |
4467 | if (attr) | |
2e3cf129 DE |
4468 | cu->addr_base = DW_UNSND (attr); |
4469 | ||
4470 | /* There should be a DW_AT_ranges_base attribute here (if needed). | |
4471 | We need the value before we can process DW_AT_ranges. */ | |
4472 | cu->ranges_base = 0; | |
4473 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_ranges_base, cu); | |
4474 | if (attr) | |
4475 | cu->ranges_base = DW_UNSND (attr); | |
3019eac3 DE |
4476 | |
4477 | if (this_cu->is_debug_types) | |
4478 | { | |
4479 | gdb_assert (sig_type != NULL); | |
4480 | signature = sig_type->signature; | |
4481 | } | |
4482 | else | |
4483 | { | |
4484 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
4485 | if (! attr) | |
4486 | error (_("Dwarf Error: missing dwo_id [in module %s]"), | |
4487 | dwo_name); | |
4488 | signature = DW_UNSND (attr); | |
4489 | } | |
4490 | ||
4491 | /* We may need the comp_dir in order to find the DWO file. */ | |
42e7ad6c DE |
4492 | comp_dir_string = NULL; |
4493 | if (comp_dir) | |
4494 | comp_dir_string = DW_STRING (comp_dir); | |
3019eac3 DE |
4495 | |
4496 | if (this_cu->is_debug_types) | |
42e7ad6c | 4497 | dwo_unit = lookup_dwo_type_unit (sig_type, dwo_name, comp_dir_string); |
3019eac3 | 4498 | else |
42e7ad6c | 4499 | dwo_unit = lookup_dwo_comp_unit (this_cu, dwo_name, comp_dir_string, |
3019eac3 DE |
4500 | signature); |
4501 | ||
4502 | if (dwo_unit == NULL) | |
4503 | { | |
4504 | error (_("Dwarf Error: CU at offset 0x%x references unknown DWO" | |
4505 | " with ID %s [in module %s]"), | |
4506 | this_cu->offset.sect_off, | |
4507 | phex (signature, sizeof (signature)), | |
4508 | objfile->name); | |
4509 | } | |
4510 | ||
4511 | /* Set up for reading the DWO CU/TU. */ | |
4512 | cu->dwo_unit = dwo_unit; | |
4513 | section = dwo_unit->info_or_types_section; | |
4514 | begin_info_ptr = info_ptr = section->buffer + dwo_unit->offset.sect_off; | |
4bdcc0c1 | 4515 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; |
3019eac3 DE |
4516 | init_cu_die_reader (&reader, cu, section, dwo_unit->dwo_file); |
4517 | ||
4518 | if (this_cu->is_debug_types) | |
4519 | { | |
4520 | ULONGEST signature; | |
4521 | ||
4bdcc0c1 DE |
4522 | info_ptr = read_and_check_type_unit_head (&cu->header, section, |
4523 | dwo_abbrev_section, | |
4524 | info_ptr, | |
3019eac3 DE |
4525 | &signature, NULL); |
4526 | gdb_assert (sig_type->signature == signature); | |
4527 | gdb_assert (dwo_unit->offset.sect_off == cu->header.offset.sect_off); | |
1ce1cefd | 4528 | gdb_assert (dwo_unit->length == get_cu_length (&cu->header)); |
3019eac3 DE |
4529 | |
4530 | /* Establish the type offset that can be used to lookup the type. | |
4531 | For DWO files, we don't know it until now. */ | |
4532 | sig_type->type_offset_in_section.sect_off = | |
4533 | dwo_unit->offset.sect_off + dwo_unit->type_offset_in_tu.cu_off; | |
4534 | } | |
4535 | else | |
4536 | { | |
4bdcc0c1 DE |
4537 | info_ptr = read_and_check_comp_unit_head (&cu->header, section, |
4538 | dwo_abbrev_section, | |
4539 | info_ptr, 0); | |
3019eac3 | 4540 | gdb_assert (dwo_unit->offset.sect_off == cu->header.offset.sect_off); |
1ce1cefd | 4541 | gdb_assert (dwo_unit->length == get_cu_length (&cu->header)); |
3019eac3 DE |
4542 | } |
4543 | ||
4544 | /* Discard the original CU's abbrev table, and read the DWO's. */ | |
f4dc4d17 DE |
4545 | if (abbrev_table == NULL) |
4546 | { | |
4547 | dwarf2_free_abbrev_table (cu); | |
4548 | dwarf2_read_abbrevs (cu, dwo_abbrev_section); | |
4549 | } | |
4550 | else | |
4551 | { | |
4552 | dwarf2_read_abbrevs (cu, dwo_abbrev_section); | |
4553 | make_cleanup (dwarf2_free_abbrev_table, cu); | |
4554 | } | |
3019eac3 DE |
4555 | |
4556 | /* Read in the die, but leave space to copy over the attributes | |
4557 | from the stub. This has the benefit of simplifying the rest of | |
4558 | the code - all the real work is done here. */ | |
4559 | num_extra_attrs = ((stmt_list != NULL) | |
4560 | + (low_pc != NULL) | |
4561 | + (high_pc != NULL) | |
42e7ad6c DE |
4562 | + (ranges != NULL) |
4563 | + (comp_dir != NULL)); | |
3019eac3 DE |
4564 | info_ptr = read_full_die_1 (&reader, &comp_unit_die, info_ptr, |
4565 | &has_children, num_extra_attrs); | |
4566 | ||
4567 | /* Copy over the attributes from the stub to the DWO die. */ | |
4568 | i = comp_unit_die->num_attrs; | |
4569 | if (stmt_list != NULL) | |
4570 | comp_unit_die->attrs[i++] = *stmt_list; | |
4571 | if (low_pc != NULL) | |
4572 | comp_unit_die->attrs[i++] = *low_pc; | |
4573 | if (high_pc != NULL) | |
4574 | comp_unit_die->attrs[i++] = *high_pc; | |
4575 | if (ranges != NULL) | |
4576 | comp_unit_die->attrs[i++] = *ranges; | |
42e7ad6c DE |
4577 | if (comp_dir != NULL) |
4578 | comp_unit_die->attrs[i++] = *comp_dir; | |
3019eac3 DE |
4579 | comp_unit_die->num_attrs += num_extra_attrs; |
4580 | ||
4581 | /* Skip dummy compilation units. */ | |
4582 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
4583 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
4584 | { | |
4585 | do_cleanups (cleanups); | |
4586 | return; | |
4587 | } | |
4588 | } | |
4589 | ||
dee91e82 DE |
4590 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); |
4591 | ||
4592 | if (free_cu_cleanup != NULL) | |
348e048f | 4593 | { |
dee91e82 DE |
4594 | if (keep) |
4595 | { | |
4596 | /* We've successfully allocated this compilation unit. Let our | |
4597 | caller clean it up when finished with it. */ | |
4598 | discard_cleanups (free_cu_cleanup); | |
4599 | ||
4600 | /* We can only discard free_cu_cleanup and all subsequent cleanups. | |
4601 | So we have to manually free the abbrev table. */ | |
4602 | dwarf2_free_abbrev_table (cu); | |
4603 | ||
4604 | /* Link this CU into read_in_chain. */ | |
4605 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
4606 | dwarf2_per_objfile->read_in_chain = this_cu; | |
4607 | } | |
4608 | else | |
4609 | do_cleanups (free_cu_cleanup); | |
348e048f | 4610 | } |
dee91e82 DE |
4611 | |
4612 | do_cleanups (cleanups); | |
4613 | } | |
4614 | ||
3019eac3 DE |
4615 | /* Read CU/TU THIS_CU in section SECTION, |
4616 | but do not follow DW_AT_GNU_dwo_name if present. | |
4617 | DWO_FILE, if non-NULL, is the DWO file to read (the caller is assumed to | |
4618 | have already done the lookup to find the DWO file). | |
dee91e82 DE |
4619 | |
4620 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 4621 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
4622 | |
4623 | We fill in THIS_CU->length. | |
4624 | ||
4625 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
4626 | linker) then DIE_READER_FUNC will not get called. | |
4627 | ||
4628 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
4629 | This is done in order to not leave THIS_CU->cu in a state where we have |
4630 | to care whether it refers to the "main" CU or the DWO CU. */ | |
dee91e82 DE |
4631 | |
4632 | static void | |
4633 | init_cutu_and_read_dies_no_follow (struct dwarf2_per_cu_data *this_cu, | |
4634 | struct dwarf2_section_info *abbrev_section, | |
3019eac3 | 4635 | struct dwo_file *dwo_file, |
dee91e82 DE |
4636 | die_reader_func_ftype *die_reader_func, |
4637 | void *data) | |
4638 | { | |
4639 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
3019eac3 DE |
4640 | struct dwarf2_section_info *section = this_cu->info_or_types_section; |
4641 | bfd *abfd = section->asection->owner; | |
dee91e82 DE |
4642 | struct dwarf2_cu cu; |
4643 | gdb_byte *begin_info_ptr, *info_ptr; | |
4644 | struct die_reader_specs reader; | |
4645 | struct cleanup *cleanups; | |
4646 | struct die_info *comp_unit_die; | |
4647 | int has_children; | |
4648 | ||
09406207 DE |
4649 | if (dwarf2_die_debug) |
4650 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset 0x%x\n", | |
4651 | this_cu->is_debug_types ? "type" : "comp", | |
4652 | this_cu->offset.sect_off); | |
4653 | ||
dee91e82 DE |
4654 | gdb_assert (this_cu->cu == NULL); |
4655 | ||
dee91e82 DE |
4656 | /* This is cheap if the section is already read in. */ |
4657 | dwarf2_read_section (objfile, section); | |
4658 | ||
4659 | init_one_comp_unit (&cu, this_cu); | |
4660 | ||
4661 | cleanups = make_cleanup (free_stack_comp_unit, &cu); | |
4662 | ||
4663 | begin_info_ptr = info_ptr = section->buffer + this_cu->offset.sect_off; | |
4bdcc0c1 DE |
4664 | info_ptr = read_and_check_comp_unit_head (&cu.header, section, |
4665 | abbrev_section, info_ptr, | |
3019eac3 | 4666 | this_cu->is_debug_types); |
dee91e82 | 4667 | |
1ce1cefd | 4668 | this_cu->length = get_cu_length (&cu.header); |
dee91e82 DE |
4669 | |
4670 | /* Skip dummy compilation units. */ | |
4671 | if (info_ptr >= begin_info_ptr + this_cu->length | |
4672 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
c906108c | 4673 | { |
dee91e82 | 4674 | do_cleanups (cleanups); |
21b2bd31 | 4675 | return; |
93311388 | 4676 | } |
72bf9492 | 4677 | |
dee91e82 DE |
4678 | dwarf2_read_abbrevs (&cu, abbrev_section); |
4679 | make_cleanup (dwarf2_free_abbrev_table, &cu); | |
4680 | ||
3019eac3 | 4681 | init_cu_die_reader (&reader, &cu, section, dwo_file); |
dee91e82 DE |
4682 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
4683 | ||
4684 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
4685 | ||
4686 | do_cleanups (cleanups); | |
4687 | } | |
4688 | ||
3019eac3 DE |
4689 | /* Read a CU/TU, except that this does not look for DW_AT_GNU_dwo_name and |
4690 | does not lookup the specified DWO file. | |
4691 | This cannot be used to read DWO files. | |
dee91e82 DE |
4692 | |
4693 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
4694 | This is done in order to not leave THIS_CU->cu in a state where we have |
4695 | to care whether it refers to the "main" CU or the DWO CU. | |
4696 | We can revisit this if the data shows there's a performance issue. */ | |
dee91e82 DE |
4697 | |
4698 | static void | |
4699 | init_cutu_and_read_dies_simple (struct dwarf2_per_cu_data *this_cu, | |
4700 | die_reader_func_ftype *die_reader_func, | |
4701 | void *data) | |
4702 | { | |
4703 | init_cutu_and_read_dies_no_follow (this_cu, | |
36586728 | 4704 | get_abbrev_section_for_cu (this_cu), |
3019eac3 | 4705 | NULL, |
dee91e82 DE |
4706 | die_reader_func, data); |
4707 | } | |
4708 | ||
f4dc4d17 DE |
4709 | /* Create a psymtab named NAME and assign it to PER_CU. |
4710 | ||
4711 | The caller must fill in the following details: | |
4712 | dirname, textlow, texthigh. */ | |
4713 | ||
4714 | static struct partial_symtab * | |
4715 | create_partial_symtab (struct dwarf2_per_cu_data *per_cu, const char *name) | |
4716 | { | |
4717 | struct objfile *objfile = per_cu->objfile; | |
4718 | struct partial_symtab *pst; | |
4719 | ||
4720 | pst = start_psymtab_common (objfile, objfile->section_offsets, | |
4721 | name, 0, | |
4722 | objfile->global_psymbols.next, | |
4723 | objfile->static_psymbols.next); | |
4724 | ||
4725 | pst->psymtabs_addrmap_supported = 1; | |
4726 | ||
4727 | /* This is the glue that links PST into GDB's symbol API. */ | |
4728 | pst->read_symtab_private = per_cu; | |
4729 | pst->read_symtab = dwarf2_psymtab_to_symtab; | |
4730 | per_cu->v.psymtab = pst; | |
4731 | ||
4732 | return pst; | |
4733 | } | |
4734 | ||
dee91e82 DE |
4735 | /* die_reader_func for process_psymtab_comp_unit. */ |
4736 | ||
4737 | static void | |
4738 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
4739 | gdb_byte *info_ptr, | |
4740 | struct die_info *comp_unit_die, | |
4741 | int has_children, | |
4742 | void *data) | |
4743 | { | |
4744 | struct dwarf2_cu *cu = reader->cu; | |
4745 | struct objfile *objfile = cu->objfile; | |
4746 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
dee91e82 DE |
4747 | struct attribute *attr; |
4748 | CORE_ADDR baseaddr; | |
4749 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
4750 | struct partial_symtab *pst; | |
4751 | int has_pc_info; | |
4752 | const char *filename; | |
95554aad | 4753 | int *want_partial_unit_ptr = data; |
dee91e82 | 4754 | |
95554aad TT |
4755 | if (comp_unit_die->tag == DW_TAG_partial_unit |
4756 | && (want_partial_unit_ptr == NULL | |
4757 | || !*want_partial_unit_ptr)) | |
dee91e82 DE |
4758 | return; |
4759 | ||
f4dc4d17 DE |
4760 | gdb_assert (! per_cu->is_debug_types); |
4761 | ||
95554aad | 4762 | prepare_one_comp_unit (cu, comp_unit_die, language_minimal); |
dee91e82 DE |
4763 | |
4764 | cu->list_in_scope = &file_symbols; | |
c906108c | 4765 | |
93311388 | 4766 | /* Allocate a new partial symbol table structure. */ |
dee91e82 | 4767 | attr = dwarf2_attr (comp_unit_die, DW_AT_name, cu); |
3e2a0cee TT |
4768 | if (attr == NULL || !DW_STRING (attr)) |
4769 | filename = ""; | |
4770 | else | |
4771 | filename = DW_STRING (attr); | |
72bf9492 | 4772 | |
f4dc4d17 DE |
4773 | pst = create_partial_symtab (per_cu, filename); |
4774 | ||
4775 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
dee91e82 | 4776 | attr = dwarf2_attr (comp_unit_die, DW_AT_comp_dir, cu); |
d85a05f0 DJ |
4777 | if (attr != NULL) |
4778 | pst->dirname = DW_STRING (attr); | |
72bf9492 | 4779 | |
93311388 | 4780 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
e7c27a73 | 4781 | |
dee91e82 | 4782 | dwarf2_find_base_address (comp_unit_die, cu); |
d85a05f0 | 4783 | |
93311388 DE |
4784 | /* Possibly set the default values of LOWPC and HIGHPC from |
4785 | `DW_AT_ranges'. */ | |
d85a05f0 | 4786 | has_pc_info = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
dee91e82 | 4787 | &best_highpc, cu, pst); |
d85a05f0 | 4788 | if (has_pc_info == 1 && best_lowpc < best_highpc) |
93311388 DE |
4789 | /* Store the contiguous range if it is not empty; it can be empty for |
4790 | CUs with no code. */ | |
4791 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
d85a05f0 DJ |
4792 | best_lowpc + baseaddr, |
4793 | best_highpc + baseaddr - 1, pst); | |
93311388 DE |
4794 | |
4795 | /* Check if comp unit has_children. | |
4796 | If so, read the rest of the partial symbols from this comp unit. | |
0963b4bd | 4797 | If not, there's no more debug_info for this comp unit. */ |
d85a05f0 | 4798 | if (has_children) |
93311388 DE |
4799 | { |
4800 | struct partial_die_info *first_die; | |
4801 | CORE_ADDR lowpc, highpc; | |
31ffec48 | 4802 | |
93311388 DE |
4803 | lowpc = ((CORE_ADDR) -1); |
4804 | highpc = ((CORE_ADDR) 0); | |
c906108c | 4805 | |
dee91e82 | 4806 | first_die = load_partial_dies (reader, info_ptr, 1); |
c906108c | 4807 | |
93311388 | 4808 | scan_partial_symbols (first_die, &lowpc, &highpc, |
dee91e82 | 4809 | ! has_pc_info, cu); |
57c22c6c | 4810 | |
93311388 DE |
4811 | /* If we didn't find a lowpc, set it to highpc to avoid |
4812 | complaints from `maint check'. */ | |
4813 | if (lowpc == ((CORE_ADDR) -1)) | |
4814 | lowpc = highpc; | |
10b3939b | 4815 | |
93311388 DE |
4816 | /* If the compilation unit didn't have an explicit address range, |
4817 | then use the information extracted from its child dies. */ | |
d85a05f0 | 4818 | if (! has_pc_info) |
93311388 | 4819 | { |
d85a05f0 DJ |
4820 | best_lowpc = lowpc; |
4821 | best_highpc = highpc; | |
93311388 DE |
4822 | } |
4823 | } | |
d85a05f0 DJ |
4824 | pst->textlow = best_lowpc + baseaddr; |
4825 | pst->texthigh = best_highpc + baseaddr; | |
c906108c | 4826 | |
93311388 DE |
4827 | pst->n_global_syms = objfile->global_psymbols.next - |
4828 | (objfile->global_psymbols.list + pst->globals_offset); | |
4829 | pst->n_static_syms = objfile->static_psymbols.next - | |
4830 | (objfile->static_psymbols.list + pst->statics_offset); | |
4831 | sort_pst_symbols (pst); | |
c906108c | 4832 | |
f4dc4d17 | 4833 | if (!VEC_empty (dwarf2_per_cu_ptr, cu->per_cu->s.imported_symtabs)) |
95554aad TT |
4834 | { |
4835 | int i; | |
f4dc4d17 | 4836 | int len = VEC_length (dwarf2_per_cu_ptr, cu->per_cu->s.imported_symtabs); |
95554aad TT |
4837 | struct dwarf2_per_cu_data *iter; |
4838 | ||
4839 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
4840 | post-pass. */ | |
4841 | pst->number_of_dependencies = len; | |
4842 | pst->dependencies = obstack_alloc (&objfile->objfile_obstack, | |
4843 | len * sizeof (struct symtab *)); | |
4844 | for (i = 0; | |
f4dc4d17 | 4845 | VEC_iterate (dwarf2_per_cu_ptr, cu->per_cu->s.imported_symtabs, |
95554aad TT |
4846 | i, iter); |
4847 | ++i) | |
4848 | pst->dependencies[i] = iter->v.psymtab; | |
4849 | ||
f4dc4d17 | 4850 | VEC_free (dwarf2_per_cu_ptr, cu->per_cu->s.imported_symtabs); |
95554aad TT |
4851 | } |
4852 | ||
f4dc4d17 DE |
4853 | /* Get the list of files included in the current compilation unit, |
4854 | and build a psymtab for each of them. */ | |
4855 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
09406207 DE |
4856 | |
4857 | if (dwarf2_read_debug) | |
4858 | { | |
4859 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
4860 | ||
4861 | fprintf_unfiltered (gdb_stdlog, | |
4862 | "Psymtab for %s unit @0x%x: 0x%s - 0x%s" | |
4863 | ", %d global, %d static syms\n", | |
4864 | per_cu->is_debug_types ? "type" : "comp", | |
4865 | per_cu->offset.sect_off, | |
4866 | paddress (gdbarch, pst->textlow), | |
4867 | paddress (gdbarch, pst->texthigh), | |
4868 | pst->n_global_syms, pst->n_static_syms); | |
4869 | } | |
dee91e82 | 4870 | } |
ae038cb0 | 4871 | |
dee91e82 DE |
4872 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. |
4873 | Process compilation unit THIS_CU for a psymtab. */ | |
4874 | ||
4875 | static void | |
95554aad TT |
4876 | process_psymtab_comp_unit (struct dwarf2_per_cu_data *this_cu, |
4877 | int want_partial_unit) | |
dee91e82 DE |
4878 | { |
4879 | /* If this compilation unit was already read in, free the | |
4880 | cached copy in order to read it in again. This is | |
4881 | necessary because we skipped some symbols when we first | |
4882 | read in the compilation unit (see load_partial_dies). | |
4883 | This problem could be avoided, but the benefit is unclear. */ | |
4884 | if (this_cu->cu != NULL) | |
4885 | free_one_cached_comp_unit (this_cu); | |
4886 | ||
3019eac3 | 4887 | gdb_assert (! this_cu->is_debug_types); |
f4dc4d17 DE |
4888 | init_cutu_and_read_dies (this_cu, NULL, 0, 0, |
4889 | process_psymtab_comp_unit_reader, | |
95554aad | 4890 | &want_partial_unit); |
dee91e82 DE |
4891 | |
4892 | /* Age out any secondary CUs. */ | |
4893 | age_cached_comp_units (); | |
93311388 | 4894 | } |
ff013f42 | 4895 | |
f4dc4d17 DE |
4896 | static hashval_t |
4897 | hash_type_unit_group (const void *item) | |
4898 | { | |
094b34ac | 4899 | const struct type_unit_group *tu_group = item; |
f4dc4d17 | 4900 | |
094b34ac | 4901 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 4902 | } |
348e048f DE |
4903 | |
4904 | static int | |
f4dc4d17 | 4905 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 4906 | { |
f4dc4d17 DE |
4907 | const struct type_unit_group *lhs = item_lhs; |
4908 | const struct type_unit_group *rhs = item_rhs; | |
348e048f | 4909 | |
094b34ac | 4910 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 4911 | } |
348e048f | 4912 | |
f4dc4d17 DE |
4913 | /* Allocate a hash table for type unit groups. */ |
4914 | ||
4915 | static htab_t | |
4916 | allocate_type_unit_groups_table (void) | |
4917 | { | |
4918 | return htab_create_alloc_ex (3, | |
4919 | hash_type_unit_group, | |
4920 | eq_type_unit_group, | |
4921 | NULL, | |
4922 | &dwarf2_per_objfile->objfile->objfile_obstack, | |
4923 | hashtab_obstack_allocate, | |
4924 | dummy_obstack_deallocate); | |
4925 | } | |
dee91e82 | 4926 | |
f4dc4d17 DE |
4927 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
4928 | partial symtabs. We combine several TUs per psymtab to not let the size | |
4929 | of any one psymtab grow too big. */ | |
4930 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
4931 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 4932 | |
094b34ac | 4933 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
4934 | Create the type_unit_group object used to hold one or more TUs. */ |
4935 | ||
4936 | static struct type_unit_group * | |
094b34ac | 4937 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 DE |
4938 | { |
4939 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
094b34ac | 4940 | struct dwarf2_per_cu_data *per_cu; |
f4dc4d17 | 4941 | struct type_unit_group *tu_group; |
f4dc4d17 DE |
4942 | |
4943 | tu_group = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4944 | struct type_unit_group); | |
094b34ac | 4945 | per_cu = &tu_group->per_cu; |
f4dc4d17 DE |
4946 | per_cu->objfile = objfile; |
4947 | per_cu->is_debug_types = 1; | |
4948 | per_cu->s.type_unit_group = tu_group; | |
4949 | ||
094b34ac DE |
4950 | if (dwarf2_per_objfile->using_index) |
4951 | { | |
4952 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4953 | struct dwarf2_per_cu_quick_data); | |
4954 | tu_group->t.first_tu = cu->per_cu; | |
4955 | } | |
4956 | else | |
4957 | { | |
4958 | unsigned int line_offset = line_offset_struct.sect_off; | |
4959 | struct partial_symtab *pst; | |
4960 | char *name; | |
4961 | ||
4962 | /* Give the symtab a useful name for debug purposes. */ | |
4963 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
4964 | name = xstrprintf ("<type_units_%d>", | |
4965 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
4966 | else | |
4967 | name = xstrprintf ("<type_units_at_0x%x>", line_offset); | |
4968 | ||
4969 | pst = create_partial_symtab (per_cu, name); | |
4970 | pst->anonymous = 1; | |
f4dc4d17 | 4971 | |
094b34ac DE |
4972 | xfree (name); |
4973 | } | |
f4dc4d17 | 4974 | |
094b34ac DE |
4975 | tu_group->hash.dwo_unit = cu->dwo_unit; |
4976 | tu_group->hash.line_offset = line_offset_struct; | |
f4dc4d17 DE |
4977 | |
4978 | return tu_group; | |
4979 | } | |
4980 | ||
094b34ac DE |
4981 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
4982 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
4983 | |
4984 | static struct type_unit_group * | |
094b34ac | 4985 | get_type_unit_group (struct dwarf2_cu *cu, struct attribute *stmt_list) |
f4dc4d17 DE |
4986 | { |
4987 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
4988 | struct type_unit_group *tu_group; | |
4989 | void **slot; | |
4990 | unsigned int line_offset; | |
4991 | struct type_unit_group type_unit_group_for_lookup; | |
4992 | ||
4993 | if (dwarf2_per_objfile->type_unit_groups == NULL) | |
4994 | { | |
4995 | dwarf2_per_objfile->type_unit_groups = | |
4996 | allocate_type_unit_groups_table (); | |
4997 | } | |
4998 | ||
4999 | /* Do we need to create a new group, or can we use an existing one? */ | |
5000 | ||
5001 | if (stmt_list) | |
5002 | { | |
5003 | line_offset = DW_UNSND (stmt_list); | |
5004 | ++tu_stats->nr_symtab_sharers; | |
5005 | } | |
5006 | else | |
5007 | { | |
5008 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
5009 | We can do various things here like create one group per TU or | |
5010 | spread them over multiple groups to split up the expansion work. | |
5011 | To avoid worst case scenarios (too many groups or too large groups) | |
5012 | we, umm, group them in bunches. */ | |
5013 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
5014 | | (tu_stats->nr_stmt_less_type_units | |
5015 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
5016 | ++tu_stats->nr_stmt_less_type_units; | |
5017 | } | |
5018 | ||
094b34ac DE |
5019 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
5020 | type_unit_group_for_lookup.hash.line_offset.sect_off = line_offset; | |
f4dc4d17 DE |
5021 | slot = htab_find_slot (dwarf2_per_objfile->type_unit_groups, |
5022 | &type_unit_group_for_lookup, INSERT); | |
5023 | if (*slot != NULL) | |
5024 | { | |
5025 | tu_group = *slot; | |
5026 | gdb_assert (tu_group != NULL); | |
5027 | } | |
5028 | else | |
5029 | { | |
5030 | sect_offset line_offset_struct; | |
5031 | ||
5032 | line_offset_struct.sect_off = line_offset; | |
094b34ac | 5033 | tu_group = create_type_unit_group (cu, line_offset_struct); |
f4dc4d17 DE |
5034 | *slot = tu_group; |
5035 | ++tu_stats->nr_symtabs; | |
5036 | } | |
5037 | ||
5038 | return tu_group; | |
5039 | } | |
5040 | ||
5041 | /* Struct used to sort TUs by their abbreviation table offset. */ | |
5042 | ||
5043 | struct tu_abbrev_offset | |
5044 | { | |
5045 | struct signatured_type *sig_type; | |
5046 | sect_offset abbrev_offset; | |
5047 | }; | |
5048 | ||
5049 | /* Helper routine for build_type_unit_groups, passed to qsort. */ | |
5050 | ||
5051 | static int | |
5052 | sort_tu_by_abbrev_offset (const void *ap, const void *bp) | |
5053 | { | |
5054 | const struct tu_abbrev_offset * const *a = ap; | |
5055 | const struct tu_abbrev_offset * const *b = bp; | |
5056 | unsigned int aoff = (*a)->abbrev_offset.sect_off; | |
5057 | unsigned int boff = (*b)->abbrev_offset.sect_off; | |
5058 | ||
5059 | return (aoff > boff) - (aoff < boff); | |
5060 | } | |
5061 | ||
5062 | /* A helper function to add a type_unit_group to a table. */ | |
5063 | ||
5064 | static int | |
5065 | add_type_unit_group_to_table (void **slot, void *datum) | |
5066 | { | |
5067 | struct type_unit_group *tu_group = *slot; | |
5068 | struct type_unit_group ***datap = datum; | |
5069 | ||
5070 | **datap = tu_group; | |
5071 | ++*datap; | |
5072 | ||
5073 | return 1; | |
5074 | } | |
5075 | ||
5076 | /* Efficiently read all the type units, calling init_cutu_and_read_dies on | |
5077 | each one passing FUNC,DATA. | |
5078 | ||
5079 | The efficiency is because we sort TUs by the abbrev table they use and | |
5080 | only read each abbrev table once. In one program there are 200K TUs | |
5081 | sharing 8K abbrev tables. | |
5082 | ||
5083 | The main purpose of this function is to support building the | |
5084 | dwarf2_per_objfile->type_unit_groups table. | |
5085 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we | |
5086 | can collapse the search space by grouping them by stmt_list. | |
5087 | The savings can be significant, in the same program from above the 200K TUs | |
5088 | share 8K stmt_list tables. | |
5089 | ||
5090 | FUNC is expected to call get_type_unit_group, which will create the | |
5091 | struct type_unit_group if necessary and add it to | |
5092 | dwarf2_per_objfile->type_unit_groups. */ | |
5093 | ||
5094 | static void | |
5095 | build_type_unit_groups (die_reader_func_ftype *func, void *data) | |
5096 | { | |
5097 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
5098 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
5099 | struct cleanup *cleanups; | |
5100 | struct abbrev_table *abbrev_table; | |
5101 | sect_offset abbrev_offset; | |
5102 | struct tu_abbrev_offset *sorted_by_abbrev; | |
5103 | struct type_unit_group **iter; | |
5104 | int i; | |
5105 | ||
5106 | /* It's up to the caller to not call us multiple times. */ | |
5107 | gdb_assert (dwarf2_per_objfile->type_unit_groups == NULL); | |
5108 | ||
5109 | if (dwarf2_per_objfile->n_type_units == 0) | |
5110 | return; | |
5111 | ||
5112 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
5113 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
5114 | read each abbrev table in. | |
5115 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
5116 | This is simpler and efficient enough for now. | |
5117 | ||
5118 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
5119 | symtab to use). Typically TUs with the same abbrev offset have the same | |
5120 | stmt_list value too so in practice this should work well. | |
5121 | ||
5122 | The basic algorithm here is: | |
5123 | ||
5124 | sort TUs by abbrev table | |
5125 | for each TU with same abbrev table: | |
5126 | read abbrev table if first user | |
5127 | read TU top level DIE | |
5128 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
5129 | call FUNC */ | |
5130 | ||
5131 | if (dwarf2_read_debug) | |
5132 | fprintf_unfiltered (gdb_stdlog, "Building type unit groups ...\n"); | |
5133 | ||
5134 | /* Sort in a separate table to maintain the order of all_type_units | |
5135 | for .gdb_index: TU indices directly index all_type_units. */ | |
5136 | sorted_by_abbrev = XNEWVEC (struct tu_abbrev_offset, | |
5137 | dwarf2_per_objfile->n_type_units); | |
5138 | for (i = 0; i < dwarf2_per_objfile->n_type_units; ++i) | |
5139 | { | |
5140 | struct signatured_type *sig_type = dwarf2_per_objfile->all_type_units[i]; | |
5141 | ||
5142 | sorted_by_abbrev[i].sig_type = sig_type; | |
5143 | sorted_by_abbrev[i].abbrev_offset = | |
5144 | read_abbrev_offset (sig_type->per_cu.info_or_types_section, | |
5145 | sig_type->per_cu.offset); | |
5146 | } | |
5147 | cleanups = make_cleanup (xfree, sorted_by_abbrev); | |
5148 | qsort (sorted_by_abbrev, dwarf2_per_objfile->n_type_units, | |
5149 | sizeof (struct tu_abbrev_offset), sort_tu_by_abbrev_offset); | |
5150 | ||
094b34ac DE |
5151 | /* Note: In the .gdb_index case, get_type_unit_group may have already been |
5152 | called any number of times, so we don't reset tu_stats here. */ | |
5153 | ||
f4dc4d17 DE |
5154 | abbrev_offset.sect_off = ~(unsigned) 0; |
5155 | abbrev_table = NULL; | |
5156 | make_cleanup (abbrev_table_free_cleanup, &abbrev_table); | |
5157 | ||
5158 | for (i = 0; i < dwarf2_per_objfile->n_type_units; ++i) | |
5159 | { | |
5160 | const struct tu_abbrev_offset *tu = &sorted_by_abbrev[i]; | |
5161 | ||
5162 | /* Switch to the next abbrev table if necessary. */ | |
5163 | if (abbrev_table == NULL | |
5164 | || tu->abbrev_offset.sect_off != abbrev_offset.sect_off) | |
5165 | { | |
5166 | if (abbrev_table != NULL) | |
5167 | { | |
5168 | abbrev_table_free (abbrev_table); | |
5169 | /* Reset to NULL in case abbrev_table_read_table throws | |
5170 | an error: abbrev_table_free_cleanup will get called. */ | |
5171 | abbrev_table = NULL; | |
5172 | } | |
5173 | abbrev_offset = tu->abbrev_offset; | |
5174 | abbrev_table = | |
5175 | abbrev_table_read_table (&dwarf2_per_objfile->abbrev, | |
5176 | abbrev_offset); | |
5177 | ++tu_stats->nr_uniq_abbrev_tables; | |
5178 | } | |
5179 | ||
5180 | init_cutu_and_read_dies (&tu->sig_type->per_cu, abbrev_table, 0, 0, | |
5181 | func, data); | |
5182 | } | |
5183 | ||
5184 | /* Create a vector of pointers to primary type units to make it easy to | |
5185 | iterate over them and CUs. See dw2_get_primary_cu. */ | |
5186 | dwarf2_per_objfile->n_type_unit_groups = | |
5187 | htab_elements (dwarf2_per_objfile->type_unit_groups); | |
5188 | dwarf2_per_objfile->all_type_unit_groups = | |
5189 | obstack_alloc (&objfile->objfile_obstack, | |
5190 | dwarf2_per_objfile->n_type_unit_groups | |
5191 | * sizeof (struct type_unit_group *)); | |
5192 | iter = &dwarf2_per_objfile->all_type_unit_groups[0]; | |
5193 | htab_traverse_noresize (dwarf2_per_objfile->type_unit_groups, | |
5194 | add_type_unit_group_to_table, &iter); | |
5195 | gdb_assert (iter - &dwarf2_per_objfile->all_type_unit_groups[0] | |
5196 | == dwarf2_per_objfile->n_type_unit_groups); | |
5197 | ||
5198 | do_cleanups (cleanups); | |
5199 | ||
5200 | if (dwarf2_read_debug) | |
5201 | { | |
5202 | fprintf_unfiltered (gdb_stdlog, "Done building type unit groups:\n"); | |
5203 | fprintf_unfiltered (gdb_stdlog, " %d TUs\n", | |
5204 | dwarf2_per_objfile->n_type_units); | |
5205 | fprintf_unfiltered (gdb_stdlog, " %d uniq abbrev tables\n", | |
5206 | tu_stats->nr_uniq_abbrev_tables); | |
5207 | fprintf_unfiltered (gdb_stdlog, " %d symtabs from stmt_list entries\n", | |
5208 | tu_stats->nr_symtabs); | |
5209 | fprintf_unfiltered (gdb_stdlog, " %d symtab sharers\n", | |
5210 | tu_stats->nr_symtab_sharers); | |
5211 | fprintf_unfiltered (gdb_stdlog, " %d type units without a stmt_list\n", | |
5212 | tu_stats->nr_stmt_less_type_units); | |
5213 | } | |
5214 | } | |
5215 | ||
5216 | /* Reader function for build_type_psymtabs. */ | |
5217 | ||
5218 | static void | |
5219 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
5220 | gdb_byte *info_ptr, | |
5221 | struct die_info *type_unit_die, | |
5222 | int has_children, | |
5223 | void *data) | |
5224 | { | |
5225 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
5226 | struct dwarf2_cu *cu = reader->cu; | |
5227 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
5228 | struct type_unit_group *tu_group; | |
5229 | struct attribute *attr; | |
5230 | struct partial_die_info *first_die; | |
5231 | CORE_ADDR lowpc, highpc; | |
5232 | struct partial_symtab *pst; | |
5233 | ||
5234 | gdb_assert (data == NULL); | |
5235 | ||
5236 | if (! has_children) | |
5237 | return; | |
5238 | ||
5239 | attr = dwarf2_attr_no_follow (type_unit_die, DW_AT_stmt_list); | |
094b34ac | 5240 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 5241 | |
094b34ac | 5242 | VEC_safe_push (dwarf2_per_cu_ptr, tu_group->t.tus, per_cu); |
f4dc4d17 DE |
5243 | |
5244 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
5245 | cu->list_in_scope = &file_symbols; | |
5246 | pst = create_partial_symtab (per_cu, ""); | |
5247 | pst->anonymous = 1; | |
5248 | ||
5249 | first_die = load_partial_dies (reader, info_ptr, 1); | |
5250 | ||
5251 | lowpc = (CORE_ADDR) -1; | |
5252 | highpc = (CORE_ADDR) 0; | |
5253 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
5254 | ||
5255 | pst->n_global_syms = objfile->global_psymbols.next - | |
5256 | (objfile->global_psymbols.list + pst->globals_offset); | |
5257 | pst->n_static_syms = objfile->static_psymbols.next - | |
5258 | (objfile->static_psymbols.list + pst->statics_offset); | |
5259 | sort_pst_symbols (pst); | |
5260 | } | |
5261 | ||
5262 | /* Traversal function for build_type_psymtabs. */ | |
5263 | ||
5264 | static int | |
5265 | build_type_psymtab_dependencies (void **slot, void *info) | |
5266 | { | |
5267 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
5268 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; | |
094b34ac | 5269 | struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu; |
f4dc4d17 | 5270 | struct partial_symtab *pst = per_cu->v.psymtab; |
094b34ac | 5271 | int len = VEC_length (dwarf2_per_cu_ptr, tu_group->t.tus); |
f4dc4d17 DE |
5272 | struct dwarf2_per_cu_data *iter; |
5273 | int i; | |
5274 | ||
5275 | gdb_assert (len > 0); | |
5276 | ||
5277 | pst->number_of_dependencies = len; | |
5278 | pst->dependencies = obstack_alloc (&objfile->objfile_obstack, | |
5279 | len * sizeof (struct psymtab *)); | |
5280 | for (i = 0; | |
094b34ac | 5281 | VEC_iterate (dwarf2_per_cu_ptr, tu_group->t.tus, i, iter); |
f4dc4d17 DE |
5282 | ++i) |
5283 | { | |
5284 | pst->dependencies[i] = iter->v.psymtab; | |
5285 | iter->s.type_unit_group = tu_group; | |
5286 | } | |
5287 | ||
094b34ac | 5288 | VEC_free (dwarf2_per_cu_ptr, tu_group->t.tus); |
348e048f DE |
5289 | |
5290 | return 1; | |
5291 | } | |
5292 | ||
5293 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
5294 | Build partial symbol tables for the .debug_types comp-units. */ | |
5295 | ||
5296 | static void | |
5297 | build_type_psymtabs (struct objfile *objfile) | |
5298 | { | |
0e50663e | 5299 | if (! create_all_type_units (objfile)) |
348e048f DE |
5300 | return; |
5301 | ||
f4dc4d17 DE |
5302 | build_type_unit_groups (build_type_psymtabs_reader, NULL); |
5303 | ||
5304 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
5305 | htab_traverse_noresize (dwarf2_per_objfile->type_unit_groups, | |
5306 | build_type_psymtab_dependencies, NULL); | |
348e048f DE |
5307 | } |
5308 | ||
60606b2c TT |
5309 | /* A cleanup function that clears objfile's psymtabs_addrmap field. */ |
5310 | ||
5311 | static void | |
5312 | psymtabs_addrmap_cleanup (void *o) | |
5313 | { | |
5314 | struct objfile *objfile = o; | |
ec61707d | 5315 | |
60606b2c TT |
5316 | objfile->psymtabs_addrmap = NULL; |
5317 | } | |
5318 | ||
95554aad TT |
5319 | /* Compute the 'user' field for each psymtab in OBJFILE. */ |
5320 | ||
5321 | static void | |
5322 | set_partial_user (struct objfile *objfile) | |
5323 | { | |
5324 | int i; | |
5325 | ||
5326 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
5327 | { | |
5328 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); | |
5329 | struct partial_symtab *pst = per_cu->v.psymtab; | |
5330 | int j; | |
5331 | ||
36586728 TT |
5332 | if (pst == NULL) |
5333 | continue; | |
5334 | ||
95554aad TT |
5335 | for (j = 0; j < pst->number_of_dependencies; ++j) |
5336 | { | |
5337 | /* Set the 'user' field only if it is not already set. */ | |
5338 | if (pst->dependencies[j]->user == NULL) | |
5339 | pst->dependencies[j]->user = pst; | |
5340 | } | |
5341 | } | |
5342 | } | |
5343 | ||
93311388 DE |
5344 | /* Build the partial symbol table by doing a quick pass through the |
5345 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 5346 | |
93311388 | 5347 | static void |
c67a9c90 | 5348 | dwarf2_build_psymtabs_hard (struct objfile *objfile) |
93311388 | 5349 | { |
60606b2c TT |
5350 | struct cleanup *back_to, *addrmap_cleanup; |
5351 | struct obstack temp_obstack; | |
21b2bd31 | 5352 | int i; |
93311388 | 5353 | |
45cfd468 DE |
5354 | if (dwarf2_read_debug) |
5355 | { | |
5356 | fprintf_unfiltered (gdb_stdlog, "Building psymtabs of objfile %s ...\n", | |
5357 | objfile->name); | |
5358 | } | |
5359 | ||
98bfdba5 PA |
5360 | dwarf2_per_objfile->reading_partial_symbols = 1; |
5361 | ||
be391dca | 5362 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
91c24f0a | 5363 | |
93311388 DE |
5364 | /* Any cached compilation units will be linked by the per-objfile |
5365 | read_in_chain. Make sure to free them when we're done. */ | |
5366 | back_to = make_cleanup (free_cached_comp_units, NULL); | |
72bf9492 | 5367 | |
348e048f DE |
5368 | build_type_psymtabs (objfile); |
5369 | ||
93311388 | 5370 | create_all_comp_units (objfile); |
c906108c | 5371 | |
60606b2c TT |
5372 | /* Create a temporary address map on a temporary obstack. We later |
5373 | copy this to the final obstack. */ | |
5374 | obstack_init (&temp_obstack); | |
5375 | make_cleanup_obstack_free (&temp_obstack); | |
5376 | objfile->psymtabs_addrmap = addrmap_create_mutable (&temp_obstack); | |
5377 | addrmap_cleanup = make_cleanup (psymtabs_addrmap_cleanup, objfile); | |
72bf9492 | 5378 | |
21b2bd31 | 5379 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
93311388 | 5380 | { |
21b2bd31 | 5381 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
aaa75496 | 5382 | |
95554aad | 5383 | process_psymtab_comp_unit (per_cu, 0); |
c906108c | 5384 | } |
ff013f42 | 5385 | |
95554aad TT |
5386 | set_partial_user (objfile); |
5387 | ||
ff013f42 JK |
5388 | objfile->psymtabs_addrmap = addrmap_create_fixed (objfile->psymtabs_addrmap, |
5389 | &objfile->objfile_obstack); | |
60606b2c | 5390 | discard_cleanups (addrmap_cleanup); |
ff013f42 | 5391 | |
ae038cb0 | 5392 | do_cleanups (back_to); |
45cfd468 DE |
5393 | |
5394 | if (dwarf2_read_debug) | |
5395 | fprintf_unfiltered (gdb_stdlog, "Done building psymtabs of %s\n", | |
5396 | objfile->name); | |
ae038cb0 DJ |
5397 | } |
5398 | ||
3019eac3 | 5399 | /* die_reader_func for load_partial_comp_unit. */ |
ae038cb0 DJ |
5400 | |
5401 | static void | |
dee91e82 DE |
5402 | load_partial_comp_unit_reader (const struct die_reader_specs *reader, |
5403 | gdb_byte *info_ptr, | |
5404 | struct die_info *comp_unit_die, | |
5405 | int has_children, | |
5406 | void *data) | |
ae038cb0 | 5407 | { |
dee91e82 | 5408 | struct dwarf2_cu *cu = reader->cu; |
ae038cb0 | 5409 | |
95554aad | 5410 | prepare_one_comp_unit (cu, comp_unit_die, language_minimal); |
ae038cb0 | 5411 | |
ae038cb0 DJ |
5412 | /* Check if comp unit has_children. |
5413 | If so, read the rest of the partial symbols from this comp unit. | |
0963b4bd | 5414 | If not, there's no more debug_info for this comp unit. */ |
d85a05f0 | 5415 | if (has_children) |
dee91e82 DE |
5416 | load_partial_dies (reader, info_ptr, 0); |
5417 | } | |
98bfdba5 | 5418 | |
dee91e82 DE |
5419 | /* Load the partial DIEs for a secondary CU into memory. |
5420 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 5421 | |
dee91e82 DE |
5422 | static void |
5423 | load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu) | |
5424 | { | |
f4dc4d17 DE |
5425 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, |
5426 | load_partial_comp_unit_reader, NULL); | |
ae038cb0 DJ |
5427 | } |
5428 | ||
ae038cb0 | 5429 | static void |
36586728 TT |
5430 | read_comp_units_from_section (struct objfile *objfile, |
5431 | struct dwarf2_section_info *section, | |
5432 | unsigned int is_dwz, | |
5433 | int *n_allocated, | |
5434 | int *n_comp_units, | |
5435 | struct dwarf2_per_cu_data ***all_comp_units) | |
ae038cb0 | 5436 | { |
be391dca | 5437 | gdb_byte *info_ptr; |
36586728 | 5438 | bfd *abfd = section->asection->owner; |
be391dca | 5439 | |
36586728 | 5440 | dwarf2_read_section (objfile, section); |
ae038cb0 | 5441 | |
36586728 | 5442 | info_ptr = section->buffer; |
6e70227d | 5443 | |
36586728 | 5444 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 5445 | { |
c764a876 | 5446 | unsigned int length, initial_length_size; |
ae038cb0 | 5447 | struct dwarf2_per_cu_data *this_cu; |
b64f50a1 | 5448 | sect_offset offset; |
ae038cb0 | 5449 | |
36586728 | 5450 | offset.sect_off = info_ptr - section->buffer; |
ae038cb0 DJ |
5451 | |
5452 | /* Read just enough information to find out where the next | |
5453 | compilation unit is. */ | |
36586728 | 5454 | length = read_initial_length (abfd, info_ptr, &initial_length_size); |
ae038cb0 DJ |
5455 | |
5456 | /* Save the compilation unit for later lookup. */ | |
5457 | this_cu = obstack_alloc (&objfile->objfile_obstack, | |
5458 | sizeof (struct dwarf2_per_cu_data)); | |
5459 | memset (this_cu, 0, sizeof (*this_cu)); | |
5460 | this_cu->offset = offset; | |
c764a876 | 5461 | this_cu->length = length + initial_length_size; |
36586728 | 5462 | this_cu->is_dwz = is_dwz; |
9291a0cd | 5463 | this_cu->objfile = objfile; |
36586728 | 5464 | this_cu->info_or_types_section = section; |
ae038cb0 | 5465 | |
36586728 | 5466 | if (*n_comp_units == *n_allocated) |
ae038cb0 | 5467 | { |
36586728 TT |
5468 | *n_allocated *= 2; |
5469 | *all_comp_units = xrealloc (*all_comp_units, | |
5470 | *n_allocated | |
5471 | * sizeof (struct dwarf2_per_cu_data *)); | |
ae038cb0 | 5472 | } |
36586728 TT |
5473 | (*all_comp_units)[*n_comp_units] = this_cu; |
5474 | ++*n_comp_units; | |
ae038cb0 DJ |
5475 | |
5476 | info_ptr = info_ptr + this_cu->length; | |
5477 | } | |
36586728 TT |
5478 | } |
5479 | ||
5480 | /* Create a list of all compilation units in OBJFILE. | |
5481 | This is only done for -readnow and building partial symtabs. */ | |
5482 | ||
5483 | static void | |
5484 | create_all_comp_units (struct objfile *objfile) | |
5485 | { | |
5486 | int n_allocated; | |
5487 | int n_comp_units; | |
5488 | struct dwarf2_per_cu_data **all_comp_units; | |
5489 | ||
5490 | n_comp_units = 0; | |
5491 | n_allocated = 10; | |
5492 | all_comp_units = xmalloc (n_allocated | |
5493 | * sizeof (struct dwarf2_per_cu_data *)); | |
5494 | ||
5495 | read_comp_units_from_section (objfile, &dwarf2_per_objfile->info, 0, | |
5496 | &n_allocated, &n_comp_units, &all_comp_units); | |
5497 | ||
5498 | if (bfd_get_section_by_name (objfile->obfd, ".gnu_debugaltlink") != NULL) | |
5499 | { | |
5500 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
5501 | ||
5502 | read_comp_units_from_section (objfile, &dwz->info, 1, | |
5503 | &n_allocated, &n_comp_units, | |
5504 | &all_comp_units); | |
5505 | } | |
ae038cb0 DJ |
5506 | |
5507 | dwarf2_per_objfile->all_comp_units | |
5508 | = obstack_alloc (&objfile->objfile_obstack, | |
5509 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
5510 | memcpy (dwarf2_per_objfile->all_comp_units, all_comp_units, | |
5511 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
5512 | xfree (all_comp_units); | |
5513 | dwarf2_per_objfile->n_comp_units = n_comp_units; | |
c906108c SS |
5514 | } |
5515 | ||
5734ee8b DJ |
5516 | /* Process all loaded DIEs for compilation unit CU, starting at |
5517 | FIRST_DIE. The caller should pass NEED_PC == 1 if the compilation | |
5518 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or | |
5519 | DW_AT_ranges). If NEED_PC is set, then this function will set | |
5520 | *LOWPC and *HIGHPC to the lowest and highest PC values found in CU | |
5521 | and record the covered ranges in the addrmap. */ | |
c906108c | 5522 | |
72bf9492 DJ |
5523 | static void |
5524 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
5734ee8b | 5525 | CORE_ADDR *highpc, int need_pc, struct dwarf2_cu *cu) |
c906108c | 5526 | { |
72bf9492 | 5527 | struct partial_die_info *pdi; |
c906108c | 5528 | |
91c24f0a DC |
5529 | /* Now, march along the PDI's, descending into ones which have |
5530 | interesting children but skipping the children of the other ones, | |
5531 | until we reach the end of the compilation unit. */ | |
c906108c | 5532 | |
72bf9492 | 5533 | pdi = first_die; |
91c24f0a | 5534 | |
72bf9492 DJ |
5535 | while (pdi != NULL) |
5536 | { | |
5537 | fixup_partial_die (pdi, cu); | |
c906108c | 5538 | |
f55ee35c | 5539 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
5540 | children, so we need to look at them. Ditto for anonymous |
5541 | enums. */ | |
933c6fe4 | 5542 | |
72bf9492 | 5543 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
95554aad TT |
5544 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
5545 | || pdi->tag == DW_TAG_imported_unit) | |
c906108c | 5546 | { |
72bf9492 | 5547 | switch (pdi->tag) |
c906108c SS |
5548 | { |
5549 | case DW_TAG_subprogram: | |
5734ee8b | 5550 | add_partial_subprogram (pdi, lowpc, highpc, need_pc, cu); |
c906108c | 5551 | break; |
72929c62 | 5552 | case DW_TAG_constant: |
c906108c SS |
5553 | case DW_TAG_variable: |
5554 | case DW_TAG_typedef: | |
91c24f0a | 5555 | case DW_TAG_union_type: |
72bf9492 | 5556 | if (!pdi->is_declaration) |
63d06c5c | 5557 | { |
72bf9492 | 5558 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
5559 | } |
5560 | break; | |
c906108c | 5561 | case DW_TAG_class_type: |
680b30c7 | 5562 | case DW_TAG_interface_type: |
c906108c | 5563 | case DW_TAG_structure_type: |
72bf9492 | 5564 | if (!pdi->is_declaration) |
c906108c | 5565 | { |
72bf9492 | 5566 | add_partial_symbol (pdi, cu); |
c906108c SS |
5567 | } |
5568 | break; | |
91c24f0a | 5569 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
5570 | if (!pdi->is_declaration) |
5571 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
5572 | break; |
5573 | case DW_TAG_base_type: | |
a02abb62 | 5574 | case DW_TAG_subrange_type: |
c906108c | 5575 | /* File scope base type definitions are added to the partial |
c5aa993b | 5576 | symbol table. */ |
72bf9492 | 5577 | add_partial_symbol (pdi, cu); |
c906108c | 5578 | break; |
d9fa45fe | 5579 | case DW_TAG_namespace: |
5734ee8b | 5580 | add_partial_namespace (pdi, lowpc, highpc, need_pc, cu); |
91c24f0a | 5581 | break; |
5d7cb8df JK |
5582 | case DW_TAG_module: |
5583 | add_partial_module (pdi, lowpc, highpc, need_pc, cu); | |
5584 | break; | |
95554aad TT |
5585 | case DW_TAG_imported_unit: |
5586 | { | |
5587 | struct dwarf2_per_cu_data *per_cu; | |
5588 | ||
f4dc4d17 DE |
5589 | /* For now we don't handle imported units in type units. */ |
5590 | if (cu->per_cu->is_debug_types) | |
5591 | { | |
5592 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
5593 | " supported in type units [in module %s]"), | |
5594 | cu->objfile->name); | |
5595 | } | |
5596 | ||
95554aad | 5597 | per_cu = dwarf2_find_containing_comp_unit (pdi->d.offset, |
36586728 | 5598 | pdi->is_dwz, |
95554aad TT |
5599 | cu->objfile); |
5600 | ||
5601 | /* Go read the partial unit, if needed. */ | |
5602 | if (per_cu->v.psymtab == NULL) | |
5603 | process_psymtab_comp_unit (per_cu, 1); | |
5604 | ||
f4dc4d17 DE |
5605 | VEC_safe_push (dwarf2_per_cu_ptr, |
5606 | cu->per_cu->s.imported_symtabs, per_cu); | |
95554aad TT |
5607 | } |
5608 | break; | |
c906108c SS |
5609 | default: |
5610 | break; | |
5611 | } | |
5612 | } | |
5613 | ||
72bf9492 DJ |
5614 | /* If the die has a sibling, skip to the sibling. */ |
5615 | ||
5616 | pdi = pdi->die_sibling; | |
5617 | } | |
5618 | } | |
5619 | ||
5620 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 5621 | |
72bf9492 | 5622 | Normally, this is simple. For C++, the parent DIE's fully scoped |
987504bb JJ |
5623 | name is concatenated with "::" and the partial DIE's name. For |
5624 | Java, the same thing occurs except that "." is used instead of "::". | |
72bf9492 DJ |
5625 | Enumerators are an exception; they use the scope of their parent |
5626 | enumeration type, i.e. the name of the enumeration type is not | |
5627 | prepended to the enumerator. | |
91c24f0a | 5628 | |
72bf9492 DJ |
5629 | There are two complexities. One is DW_AT_specification; in this |
5630 | case "parent" means the parent of the target of the specification, | |
5631 | instead of the direct parent of the DIE. The other is compilers | |
5632 | which do not emit DW_TAG_namespace; in this case we try to guess | |
5633 | the fully qualified name of structure types from their members' | |
5634 | linkage names. This must be done using the DIE's children rather | |
5635 | than the children of any DW_AT_specification target. We only need | |
5636 | to do this for structures at the top level, i.e. if the target of | |
5637 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
5638 | have a parent. */ | |
5639 | ||
5640 | /* Compute the scope prefix associated with PDI's parent, in | |
5641 | compilation unit CU. The result will be allocated on CU's | |
5642 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
5643 | field. NULL is returned if no prefix is necessary. */ | |
5644 | static char * | |
5645 | partial_die_parent_scope (struct partial_die_info *pdi, | |
5646 | struct dwarf2_cu *cu) | |
5647 | { | |
5648 | char *grandparent_scope; | |
5649 | struct partial_die_info *parent, *real_pdi; | |
91c24f0a | 5650 | |
72bf9492 DJ |
5651 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
5652 | then this means the parent of the specification DIE. */ | |
5653 | ||
5654 | real_pdi = pdi; | |
72bf9492 | 5655 | while (real_pdi->has_specification) |
36586728 TT |
5656 | real_pdi = find_partial_die (real_pdi->spec_offset, |
5657 | real_pdi->spec_is_dwz, cu); | |
72bf9492 DJ |
5658 | |
5659 | parent = real_pdi->die_parent; | |
5660 | if (parent == NULL) | |
5661 | return NULL; | |
5662 | ||
5663 | if (parent->scope_set) | |
5664 | return parent->scope; | |
5665 | ||
5666 | fixup_partial_die (parent, cu); | |
5667 | ||
10b3939b | 5668 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 5669 | |
acebe513 UW |
5670 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
5671 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
5672 | Work around this problem here. */ | |
5673 | if (cu->language == language_cplus | |
6e70227d | 5674 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
5675 | && strcmp (parent->name, "::") == 0 |
5676 | && grandparent_scope == NULL) | |
5677 | { | |
5678 | parent->scope = NULL; | |
5679 | parent->scope_set = 1; | |
5680 | return NULL; | |
5681 | } | |
5682 | ||
9c6c53f7 SA |
5683 | if (pdi->tag == DW_TAG_enumerator) |
5684 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
5685 | parent->scope = grandparent_scope; | |
5686 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 5687 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
5688 | || parent->tag == DW_TAG_structure_type |
5689 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 5690 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a TT |
5691 | || parent->tag == DW_TAG_union_type |
5692 | || parent->tag == DW_TAG_enumeration_type) | |
72bf9492 DJ |
5693 | { |
5694 | if (grandparent_scope == NULL) | |
5695 | parent->scope = parent->name; | |
5696 | else | |
3e43a32a MS |
5697 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
5698 | grandparent_scope, | |
f55ee35c | 5699 | parent->name, 0, cu); |
72bf9492 | 5700 | } |
72bf9492 DJ |
5701 | else |
5702 | { | |
5703 | /* FIXME drow/2004-04-01: What should we be doing with | |
5704 | function-local names? For partial symbols, we should probably be | |
5705 | ignoring them. */ | |
5706 | complaint (&symfile_complaints, | |
e2e0b3e5 | 5707 | _("unhandled containing DIE tag %d for DIE at %d"), |
b64f50a1 | 5708 | parent->tag, pdi->offset.sect_off); |
72bf9492 | 5709 | parent->scope = grandparent_scope; |
c906108c SS |
5710 | } |
5711 | ||
72bf9492 DJ |
5712 | parent->scope_set = 1; |
5713 | return parent->scope; | |
5714 | } | |
5715 | ||
5716 | /* Return the fully scoped name associated with PDI, from compilation unit | |
5717 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 5718 | |
72bf9492 DJ |
5719 | static char * |
5720 | partial_die_full_name (struct partial_die_info *pdi, | |
5721 | struct dwarf2_cu *cu) | |
5722 | { | |
5723 | char *parent_scope; | |
5724 | ||
98bfdba5 PA |
5725 | /* If this is a template instantiation, we can not work out the |
5726 | template arguments from partial DIEs. So, unfortunately, we have | |
5727 | to go through the full DIEs. At least any work we do building | |
5728 | types here will be reused if full symbols are loaded later. */ | |
5729 | if (pdi->has_template_arguments) | |
5730 | { | |
5731 | fixup_partial_die (pdi, cu); | |
5732 | ||
5733 | if (pdi->name != NULL && strchr (pdi->name, '<') == NULL) | |
5734 | { | |
5735 | struct die_info *die; | |
5736 | struct attribute attr; | |
5737 | struct dwarf2_cu *ref_cu = cu; | |
5738 | ||
b64f50a1 | 5739 | /* DW_FORM_ref_addr is using section offset. */ |
98bfdba5 PA |
5740 | attr.name = 0; |
5741 | attr.form = DW_FORM_ref_addr; | |
4568ecf9 | 5742 | attr.u.unsnd = pdi->offset.sect_off; |
98bfdba5 PA |
5743 | die = follow_die_ref (NULL, &attr, &ref_cu); |
5744 | ||
5745 | return xstrdup (dwarf2_full_name (NULL, die, ref_cu)); | |
5746 | } | |
5747 | } | |
5748 | ||
72bf9492 DJ |
5749 | parent_scope = partial_die_parent_scope (pdi, cu); |
5750 | if (parent_scope == NULL) | |
5751 | return NULL; | |
5752 | else | |
f55ee35c | 5753 | return typename_concat (NULL, parent_scope, pdi->name, 0, cu); |
c906108c SS |
5754 | } |
5755 | ||
5756 | static void | |
72bf9492 | 5757 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 5758 | { |
e7c27a73 | 5759 | struct objfile *objfile = cu->objfile; |
c906108c | 5760 | CORE_ADDR addr = 0; |
decbce07 | 5761 | char *actual_name = NULL; |
e142c38c | 5762 | CORE_ADDR baseaddr; |
72bf9492 | 5763 | int built_actual_name = 0; |
e142c38c DJ |
5764 | |
5765 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 5766 | |
94af9270 KS |
5767 | actual_name = partial_die_full_name (pdi, cu); |
5768 | if (actual_name) | |
5769 | built_actual_name = 1; | |
63d06c5c | 5770 | |
72bf9492 DJ |
5771 | if (actual_name == NULL) |
5772 | actual_name = pdi->name; | |
5773 | ||
c906108c SS |
5774 | switch (pdi->tag) |
5775 | { | |
5776 | case DW_TAG_subprogram: | |
2cfa0c8d | 5777 | if (pdi->is_external || cu->language == language_ada) |
c906108c | 5778 | { |
2cfa0c8d JB |
5779 | /* brobecker/2007-12-26: Normally, only "external" DIEs are part |
5780 | of the global scope. But in Ada, we want to be able to access | |
5781 | nested procedures globally. So all Ada subprograms are stored | |
5782 | in the global scope. */ | |
f47fb265 | 5783 | /* prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 5784 | mst_text, objfile); */ |
f47fb265 MS |
5785 | add_psymbol_to_list (actual_name, strlen (actual_name), |
5786 | built_actual_name, | |
5787 | VAR_DOMAIN, LOC_BLOCK, | |
5788 | &objfile->global_psymbols, | |
5789 | 0, pdi->lowpc + baseaddr, | |
5790 | cu->language, objfile); | |
c906108c SS |
5791 | } |
5792 | else | |
5793 | { | |
f47fb265 | 5794 | /* prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 5795 | mst_file_text, objfile); */ |
f47fb265 MS |
5796 | add_psymbol_to_list (actual_name, strlen (actual_name), |
5797 | built_actual_name, | |
5798 | VAR_DOMAIN, LOC_BLOCK, | |
5799 | &objfile->static_psymbols, | |
5800 | 0, pdi->lowpc + baseaddr, | |
5801 | cu->language, objfile); | |
c906108c SS |
5802 | } |
5803 | break; | |
72929c62 JB |
5804 | case DW_TAG_constant: |
5805 | { | |
5806 | struct psymbol_allocation_list *list; | |
5807 | ||
5808 | if (pdi->is_external) | |
5809 | list = &objfile->global_psymbols; | |
5810 | else | |
5811 | list = &objfile->static_psymbols; | |
f47fb265 MS |
5812 | add_psymbol_to_list (actual_name, strlen (actual_name), |
5813 | built_actual_name, VAR_DOMAIN, LOC_STATIC, | |
5814 | list, 0, 0, cu->language, objfile); | |
72929c62 JB |
5815 | } |
5816 | break; | |
c906108c | 5817 | case DW_TAG_variable: |
95554aad TT |
5818 | if (pdi->d.locdesc) |
5819 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 5820 | |
95554aad | 5821 | if (pdi->d.locdesc |
caac4577 JG |
5822 | && addr == 0 |
5823 | && !dwarf2_per_objfile->has_section_at_zero) | |
5824 | { | |
5825 | /* A global or static variable may also have been stripped | |
5826 | out by the linker if unused, in which case its address | |
5827 | will be nullified; do not add such variables into partial | |
5828 | symbol table then. */ | |
5829 | } | |
5830 | else if (pdi->is_external) | |
c906108c SS |
5831 | { |
5832 | /* Global Variable. | |
5833 | Don't enter into the minimal symbol tables as there is | |
5834 | a minimal symbol table entry from the ELF symbols already. | |
5835 | Enter into partial symbol table if it has a location | |
5836 | descriptor or a type. | |
5837 | If the location descriptor is missing, new_symbol will create | |
5838 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
5839 | be determined from the minimal symbol table whenever the variable | |
5840 | is referenced. | |
5841 | The address for the partial symbol table entry is not | |
5842 | used by GDB, but it comes in handy for debugging partial symbol | |
5843 | table building. */ | |
5844 | ||
95554aad | 5845 | if (pdi->d.locdesc || pdi->has_type) |
f47fb265 MS |
5846 | add_psymbol_to_list (actual_name, strlen (actual_name), |
5847 | built_actual_name, | |
5848 | VAR_DOMAIN, LOC_STATIC, | |
5849 | &objfile->global_psymbols, | |
5850 | 0, addr + baseaddr, | |
5851 | cu->language, objfile); | |
c906108c SS |
5852 | } |
5853 | else | |
5854 | { | |
0963b4bd | 5855 | /* Static Variable. Skip symbols without location descriptors. */ |
95554aad | 5856 | if (pdi->d.locdesc == NULL) |
decbce07 MS |
5857 | { |
5858 | if (built_actual_name) | |
5859 | xfree (actual_name); | |
5860 | return; | |
5861 | } | |
f47fb265 | 5862 | /* prim_record_minimal_symbol (actual_name, addr + baseaddr, |
c5aa993b | 5863 | mst_file_data, objfile); */ |
f47fb265 MS |
5864 | add_psymbol_to_list (actual_name, strlen (actual_name), |
5865 | built_actual_name, | |
5866 | VAR_DOMAIN, LOC_STATIC, | |
5867 | &objfile->static_psymbols, | |
5868 | 0, addr + baseaddr, | |
5869 | cu->language, objfile); | |
c906108c SS |
5870 | } |
5871 | break; | |
5872 | case DW_TAG_typedef: | |
5873 | case DW_TAG_base_type: | |
a02abb62 | 5874 | case DW_TAG_subrange_type: |
38d518c9 | 5875 | add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 5876 | built_actual_name, |
176620f1 | 5877 | VAR_DOMAIN, LOC_TYPEDEF, |
c906108c | 5878 | &objfile->static_psymbols, |
e142c38c | 5879 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 5880 | break; |
72bf9492 DJ |
5881 | case DW_TAG_namespace: |
5882 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
04a679b8 | 5883 | built_actual_name, |
72bf9492 DJ |
5884 | VAR_DOMAIN, LOC_TYPEDEF, |
5885 | &objfile->global_psymbols, | |
5886 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
5887 | break; | |
c906108c | 5888 | case DW_TAG_class_type: |
680b30c7 | 5889 | case DW_TAG_interface_type: |
c906108c SS |
5890 | case DW_TAG_structure_type: |
5891 | case DW_TAG_union_type: | |
5892 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
5893 | /* Skip external references. The DWARF standard says in the section |
5894 | about "Structure, Union, and Class Type Entries": "An incomplete | |
5895 | structure, union or class type is represented by a structure, | |
5896 | union or class entry that does not have a byte size attribute | |
5897 | and that has a DW_AT_declaration attribute." */ | |
5898 | if (!pdi->has_byte_size && pdi->is_declaration) | |
decbce07 MS |
5899 | { |
5900 | if (built_actual_name) | |
5901 | xfree (actual_name); | |
5902 | return; | |
5903 | } | |
fa4028e9 | 5904 | |
63d06c5c DC |
5905 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
5906 | static vs. global. */ | |
38d518c9 | 5907 | add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 5908 | built_actual_name, |
176620f1 | 5909 | STRUCT_DOMAIN, LOC_TYPEDEF, |
987504bb JJ |
5910 | (cu->language == language_cplus |
5911 | || cu->language == language_java) | |
63d06c5c DC |
5912 | ? &objfile->global_psymbols |
5913 | : &objfile->static_psymbols, | |
e142c38c | 5914 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 5915 | |
c906108c SS |
5916 | break; |
5917 | case DW_TAG_enumerator: | |
38d518c9 | 5918 | add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 5919 | built_actual_name, |
176620f1 | 5920 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
5921 | (cu->language == language_cplus |
5922 | || cu->language == language_java) | |
f6fe98ef DJ |
5923 | ? &objfile->global_psymbols |
5924 | : &objfile->static_psymbols, | |
e142c38c | 5925 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
5926 | break; |
5927 | default: | |
5928 | break; | |
5929 | } | |
5c4e30ca | 5930 | |
72bf9492 DJ |
5931 | if (built_actual_name) |
5932 | xfree (actual_name); | |
c906108c SS |
5933 | } |
5934 | ||
5c4e30ca DC |
5935 | /* Read a partial die corresponding to a namespace; also, add a symbol |
5936 | corresponding to that namespace to the symbol table. NAMESPACE is | |
5937 | the name of the enclosing namespace. */ | |
91c24f0a | 5938 | |
72bf9492 DJ |
5939 | static void |
5940 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 5941 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
5734ee8b | 5942 | int need_pc, struct dwarf2_cu *cu) |
91c24f0a | 5943 | { |
72bf9492 | 5944 | /* Add a symbol for the namespace. */ |
e7c27a73 | 5945 | |
72bf9492 | 5946 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
5947 | |
5948 | /* Now scan partial symbols in that namespace. */ | |
5949 | ||
91c24f0a | 5950 | if (pdi->has_children) |
5734ee8b | 5951 | scan_partial_symbols (pdi->die_child, lowpc, highpc, need_pc, cu); |
91c24f0a DC |
5952 | } |
5953 | ||
5d7cb8df JK |
5954 | /* Read a partial die corresponding to a Fortran module. */ |
5955 | ||
5956 | static void | |
5957 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
5958 | CORE_ADDR *highpc, int need_pc, struct dwarf2_cu *cu) | |
5959 | { | |
f55ee35c | 5960 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
5961 | |
5962 | if (pdi->has_children) | |
5963 | scan_partial_symbols (pdi->die_child, lowpc, highpc, need_pc, cu); | |
5964 | } | |
5965 | ||
bc30ff58 JB |
5966 | /* Read a partial die corresponding to a subprogram and create a partial |
5967 | symbol for that subprogram. When the CU language allows it, this | |
5968 | routine also defines a partial symbol for each nested subprogram | |
5969 | that this subprogram contains. | |
6e70227d | 5970 | |
bc30ff58 JB |
5971 | DIE my also be a lexical block, in which case we simply search |
5972 | recursively for suprograms defined inside that lexical block. | |
5973 | Again, this is only performed when the CU language allows this | |
5974 | type of definitions. */ | |
5975 | ||
5976 | static void | |
5977 | add_partial_subprogram (struct partial_die_info *pdi, | |
5978 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 5979 | int need_pc, struct dwarf2_cu *cu) |
bc30ff58 JB |
5980 | { |
5981 | if (pdi->tag == DW_TAG_subprogram) | |
5982 | { | |
5983 | if (pdi->has_pc_info) | |
5984 | { | |
5985 | if (pdi->lowpc < *lowpc) | |
5986 | *lowpc = pdi->lowpc; | |
5987 | if (pdi->highpc > *highpc) | |
5988 | *highpc = pdi->highpc; | |
5734ee8b DJ |
5989 | if (need_pc) |
5990 | { | |
5991 | CORE_ADDR baseaddr; | |
5992 | struct objfile *objfile = cu->objfile; | |
5993 | ||
5994 | baseaddr = ANOFFSET (objfile->section_offsets, | |
5995 | SECT_OFF_TEXT (objfile)); | |
5996 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
01637564 DE |
5997 | pdi->lowpc + baseaddr, |
5998 | pdi->highpc - 1 + baseaddr, | |
9291a0cd | 5999 | cu->per_cu->v.psymtab); |
5734ee8b | 6000 | } |
481860b3 GB |
6001 | } |
6002 | ||
6003 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
6004 | { | |
bc30ff58 | 6005 | if (!pdi->is_declaration) |
e8d05480 JB |
6006 | /* Ignore subprogram DIEs that do not have a name, they are |
6007 | illegal. Do not emit a complaint at this point, we will | |
6008 | do so when we convert this psymtab into a symtab. */ | |
6009 | if (pdi->name) | |
6010 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
6011 | } |
6012 | } | |
6e70227d | 6013 | |
bc30ff58 JB |
6014 | if (! pdi->has_children) |
6015 | return; | |
6016 | ||
6017 | if (cu->language == language_ada) | |
6018 | { | |
6019 | pdi = pdi->die_child; | |
6020 | while (pdi != NULL) | |
6021 | { | |
6022 | fixup_partial_die (pdi, cu); | |
6023 | if (pdi->tag == DW_TAG_subprogram | |
6024 | || pdi->tag == DW_TAG_lexical_block) | |
5734ee8b | 6025 | add_partial_subprogram (pdi, lowpc, highpc, need_pc, cu); |
bc30ff58 JB |
6026 | pdi = pdi->die_sibling; |
6027 | } | |
6028 | } | |
6029 | } | |
6030 | ||
91c24f0a DC |
6031 | /* Read a partial die corresponding to an enumeration type. */ |
6032 | ||
72bf9492 DJ |
6033 | static void |
6034 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
6035 | struct dwarf2_cu *cu) | |
91c24f0a | 6036 | { |
72bf9492 | 6037 | struct partial_die_info *pdi; |
91c24f0a DC |
6038 | |
6039 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
6040 | add_partial_symbol (enum_pdi, cu); |
6041 | ||
6042 | pdi = enum_pdi->die_child; | |
6043 | while (pdi) | |
91c24f0a | 6044 | { |
72bf9492 | 6045 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
e2e0b3e5 | 6046 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
91c24f0a | 6047 | else |
72bf9492 DJ |
6048 | add_partial_symbol (pdi, cu); |
6049 | pdi = pdi->die_sibling; | |
91c24f0a | 6050 | } |
91c24f0a DC |
6051 | } |
6052 | ||
6caca83c CC |
6053 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
6054 | ||
6055 | static unsigned int | |
6056 | peek_abbrev_code (bfd *abfd, gdb_byte *info_ptr) | |
6057 | { | |
6058 | unsigned int bytes_read; | |
6059 | ||
6060 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
6061 | } | |
6062 | ||
4bb7a0a7 DJ |
6063 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit CU. |
6064 | Return the corresponding abbrev, or NULL if the number is zero (indicating | |
6065 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
6066 | the initial number. */ | |
6067 | ||
6068 | static struct abbrev_info * | |
fe1b8b76 | 6069 | peek_die_abbrev (gdb_byte *info_ptr, unsigned int *bytes_read, |
891d2f0b | 6070 | struct dwarf2_cu *cu) |
4bb7a0a7 DJ |
6071 | { |
6072 | bfd *abfd = cu->objfile->obfd; | |
6073 | unsigned int abbrev_number; | |
6074 | struct abbrev_info *abbrev; | |
6075 | ||
6076 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
6077 | ||
6078 | if (abbrev_number == 0) | |
6079 | return NULL; | |
6080 | ||
433df2d4 | 6081 | abbrev = abbrev_table_lookup_abbrev (cu->abbrev_table, abbrev_number); |
4bb7a0a7 DJ |
6082 | if (!abbrev) |
6083 | { | |
3e43a32a MS |
6084 | error (_("Dwarf Error: Could not find abbrev number %d [in module %s]"), |
6085 | abbrev_number, bfd_get_filename (abfd)); | |
4bb7a0a7 DJ |
6086 | } |
6087 | ||
6088 | return abbrev; | |
6089 | } | |
6090 | ||
93311388 DE |
6091 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
6092 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
6093 | DIE. Any children of the skipped DIEs will also be skipped. */ |
6094 | ||
fe1b8b76 | 6095 | static gdb_byte * |
dee91e82 | 6096 | skip_children (const struct die_reader_specs *reader, gdb_byte *info_ptr) |
4bb7a0a7 | 6097 | { |
dee91e82 | 6098 | struct dwarf2_cu *cu = reader->cu; |
4bb7a0a7 DJ |
6099 | struct abbrev_info *abbrev; |
6100 | unsigned int bytes_read; | |
6101 | ||
6102 | while (1) | |
6103 | { | |
6104 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
6105 | if (abbrev == NULL) | |
6106 | return info_ptr + bytes_read; | |
6107 | else | |
dee91e82 | 6108 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
6109 | } |
6110 | } | |
6111 | ||
93311388 DE |
6112 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
6113 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
6114 | abbrev corresponding to that skipped uleb128 should be passed in |
6115 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
6116 | children. */ | |
6117 | ||
fe1b8b76 | 6118 | static gdb_byte * |
dee91e82 DE |
6119 | skip_one_die (const struct die_reader_specs *reader, gdb_byte *info_ptr, |
6120 | struct abbrev_info *abbrev) | |
4bb7a0a7 DJ |
6121 | { |
6122 | unsigned int bytes_read; | |
6123 | struct attribute attr; | |
dee91e82 DE |
6124 | bfd *abfd = reader->abfd; |
6125 | struct dwarf2_cu *cu = reader->cu; | |
6126 | gdb_byte *buffer = reader->buffer; | |
f664829e DE |
6127 | const gdb_byte *buffer_end = reader->buffer_end; |
6128 | gdb_byte *start_info_ptr = info_ptr; | |
4bb7a0a7 DJ |
6129 | unsigned int form, i; |
6130 | ||
6131 | for (i = 0; i < abbrev->num_attrs; i++) | |
6132 | { | |
6133 | /* The only abbrev we care about is DW_AT_sibling. */ | |
6134 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
6135 | { | |
dee91e82 | 6136 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
4bb7a0a7 | 6137 | if (attr.form == DW_FORM_ref_addr) |
3e43a32a MS |
6138 | complaint (&symfile_complaints, |
6139 | _("ignoring absolute DW_AT_sibling")); | |
4bb7a0a7 | 6140 | else |
b64f50a1 | 6141 | return buffer + dwarf2_get_ref_die_offset (&attr).sect_off; |
4bb7a0a7 DJ |
6142 | } |
6143 | ||
6144 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
6145 | form = abbrev->attrs[i].form; | |
6146 | skip_attribute: | |
6147 | switch (form) | |
6148 | { | |
4bb7a0a7 | 6149 | case DW_FORM_ref_addr: |
ae411497 TT |
6150 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
6151 | and later it is offset sized. */ | |
6152 | if (cu->header.version == 2) | |
6153 | info_ptr += cu->header.addr_size; | |
6154 | else | |
6155 | info_ptr += cu->header.offset_size; | |
6156 | break; | |
36586728 TT |
6157 | case DW_FORM_GNU_ref_alt: |
6158 | info_ptr += cu->header.offset_size; | |
6159 | break; | |
ae411497 | 6160 | case DW_FORM_addr: |
4bb7a0a7 DJ |
6161 | info_ptr += cu->header.addr_size; |
6162 | break; | |
6163 | case DW_FORM_data1: | |
6164 | case DW_FORM_ref1: | |
6165 | case DW_FORM_flag: | |
6166 | info_ptr += 1; | |
6167 | break; | |
2dc7f7b3 TT |
6168 | case DW_FORM_flag_present: |
6169 | break; | |
4bb7a0a7 DJ |
6170 | case DW_FORM_data2: |
6171 | case DW_FORM_ref2: | |
6172 | info_ptr += 2; | |
6173 | break; | |
6174 | case DW_FORM_data4: | |
6175 | case DW_FORM_ref4: | |
6176 | info_ptr += 4; | |
6177 | break; | |
6178 | case DW_FORM_data8: | |
6179 | case DW_FORM_ref8: | |
55f1336d | 6180 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
6181 | info_ptr += 8; |
6182 | break; | |
6183 | case DW_FORM_string: | |
9b1c24c8 | 6184 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
6185 | info_ptr += bytes_read; |
6186 | break; | |
2dc7f7b3 | 6187 | case DW_FORM_sec_offset: |
4bb7a0a7 | 6188 | case DW_FORM_strp: |
36586728 | 6189 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
6190 | info_ptr += cu->header.offset_size; |
6191 | break; | |
2dc7f7b3 | 6192 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
6193 | case DW_FORM_block: |
6194 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
6195 | info_ptr += bytes_read; | |
6196 | break; | |
6197 | case DW_FORM_block1: | |
6198 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
6199 | break; | |
6200 | case DW_FORM_block2: | |
6201 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
6202 | break; | |
6203 | case DW_FORM_block4: | |
6204 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
6205 | break; | |
6206 | case DW_FORM_sdata: | |
6207 | case DW_FORM_udata: | |
6208 | case DW_FORM_ref_udata: | |
3019eac3 DE |
6209 | case DW_FORM_GNU_addr_index: |
6210 | case DW_FORM_GNU_str_index: | |
f664829e | 6211 | info_ptr = (gdb_byte *) safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
6212 | break; |
6213 | case DW_FORM_indirect: | |
6214 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
6215 | info_ptr += bytes_read; | |
6216 | /* We need to continue parsing from here, so just go back to | |
6217 | the top. */ | |
6218 | goto skip_attribute; | |
6219 | ||
6220 | default: | |
3e43a32a MS |
6221 | error (_("Dwarf Error: Cannot handle %s " |
6222 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
6223 | dwarf_form_name (form), |
6224 | bfd_get_filename (abfd)); | |
6225 | } | |
6226 | } | |
6227 | ||
6228 | if (abbrev->has_children) | |
dee91e82 | 6229 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
6230 | else |
6231 | return info_ptr; | |
6232 | } | |
6233 | ||
93311388 | 6234 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 6235 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 6236 | |
fe1b8b76 | 6237 | static gdb_byte * |
dee91e82 DE |
6238 | locate_pdi_sibling (const struct die_reader_specs *reader, |
6239 | struct partial_die_info *orig_pdi, | |
6240 | gdb_byte *info_ptr) | |
91c24f0a DC |
6241 | { |
6242 | /* Do we know the sibling already? */ | |
72bf9492 | 6243 | |
91c24f0a DC |
6244 | if (orig_pdi->sibling) |
6245 | return orig_pdi->sibling; | |
6246 | ||
6247 | /* Are there any children to deal with? */ | |
6248 | ||
6249 | if (!orig_pdi->has_children) | |
6250 | return info_ptr; | |
6251 | ||
4bb7a0a7 | 6252 | /* Skip the children the long way. */ |
91c24f0a | 6253 | |
dee91e82 | 6254 | return skip_children (reader, info_ptr); |
91c24f0a DC |
6255 | } |
6256 | ||
c906108c SS |
6257 | /* Expand this partial symbol table into a full symbol table. */ |
6258 | ||
6259 | static void | |
fba45db2 | 6260 | dwarf2_psymtab_to_symtab (struct partial_symtab *pst) |
c906108c | 6261 | { |
c906108c SS |
6262 | if (pst != NULL) |
6263 | { | |
6264 | if (pst->readin) | |
6265 | { | |
3e43a32a MS |
6266 | warning (_("bug: psymtab for %s is already read in."), |
6267 | pst->filename); | |
c906108c SS |
6268 | } |
6269 | else | |
6270 | { | |
6271 | if (info_verbose) | |
6272 | { | |
3e43a32a MS |
6273 | printf_filtered (_("Reading in symbols for %s..."), |
6274 | pst->filename); | |
c906108c SS |
6275 | gdb_flush (gdb_stdout); |
6276 | } | |
6277 | ||
10b3939b DJ |
6278 | /* Restore our global data. */ |
6279 | dwarf2_per_objfile = objfile_data (pst->objfile, | |
6280 | dwarf2_objfile_data_key); | |
6281 | ||
b2ab525c KB |
6282 | /* If this psymtab is constructed from a debug-only objfile, the |
6283 | has_section_at_zero flag will not necessarily be correct. We | |
6284 | can get the correct value for this flag by looking at the data | |
6285 | associated with the (presumably stripped) associated objfile. */ | |
6286 | if (pst->objfile->separate_debug_objfile_backlink) | |
6287 | { | |
6288 | struct dwarf2_per_objfile *dpo_backlink | |
6289 | = objfile_data (pst->objfile->separate_debug_objfile_backlink, | |
6290 | dwarf2_objfile_data_key); | |
9a619af0 | 6291 | |
b2ab525c KB |
6292 | dwarf2_per_objfile->has_section_at_zero |
6293 | = dpo_backlink->has_section_at_zero; | |
6294 | } | |
6295 | ||
98bfdba5 PA |
6296 | dwarf2_per_objfile->reading_partial_symbols = 0; |
6297 | ||
c906108c SS |
6298 | psymtab_to_symtab_1 (pst); |
6299 | ||
6300 | /* Finish up the debug error message. */ | |
6301 | if (info_verbose) | |
a3f17187 | 6302 | printf_filtered (_("done.\n")); |
c906108c SS |
6303 | } |
6304 | } | |
95554aad TT |
6305 | |
6306 | process_cu_includes (); | |
c906108c | 6307 | } |
9cdd5dbd DE |
6308 | \f |
6309 | /* Reading in full CUs. */ | |
c906108c | 6310 | |
10b3939b DJ |
6311 | /* Add PER_CU to the queue. */ |
6312 | ||
6313 | static void | |
95554aad TT |
6314 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
6315 | enum language pretend_language) | |
10b3939b DJ |
6316 | { |
6317 | struct dwarf2_queue_item *item; | |
6318 | ||
6319 | per_cu->queued = 1; | |
6320 | item = xmalloc (sizeof (*item)); | |
6321 | item->per_cu = per_cu; | |
95554aad | 6322 | item->pretend_language = pretend_language; |
10b3939b DJ |
6323 | item->next = NULL; |
6324 | ||
6325 | if (dwarf2_queue == NULL) | |
6326 | dwarf2_queue = item; | |
6327 | else | |
6328 | dwarf2_queue_tail->next = item; | |
6329 | ||
6330 | dwarf2_queue_tail = item; | |
6331 | } | |
6332 | ||
0907af0c DE |
6333 | /* THIS_CU has a reference to PER_CU. If necessary, load the new compilation |
6334 | unit and add it to our queue. | |
6335 | The result is non-zero if PER_CU was queued, otherwise the result is zero | |
6336 | meaning either PER_CU is already queued or it is already loaded. */ | |
6337 | ||
6338 | static int | |
6339 | maybe_queue_comp_unit (struct dwarf2_cu *this_cu, | |
6340 | struct dwarf2_per_cu_data *per_cu, | |
6341 | enum language pretend_language) | |
6342 | { | |
6343 | /* We may arrive here during partial symbol reading, if we need full | |
6344 | DIEs to process an unusual case (e.g. template arguments). Do | |
6345 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
6346 | if (dwarf2_per_objfile->reading_partial_symbols) | |
6347 | { | |
6348 | if (per_cu->cu == NULL || per_cu->cu->dies == NULL) | |
6349 | return 1; | |
6350 | return 0; | |
6351 | } | |
6352 | ||
6353 | /* Mark the dependence relation so that we don't flush PER_CU | |
6354 | too early. */ | |
6355 | dwarf2_add_dependence (this_cu, per_cu); | |
6356 | ||
6357 | /* If it's already on the queue, we have nothing to do. */ | |
6358 | if (per_cu->queued) | |
6359 | return 0; | |
6360 | ||
6361 | /* If the compilation unit is already loaded, just mark it as | |
6362 | used. */ | |
6363 | if (per_cu->cu != NULL) | |
6364 | { | |
6365 | per_cu->cu->last_used = 0; | |
6366 | return 0; | |
6367 | } | |
6368 | ||
6369 | /* Add it to the queue. */ | |
6370 | queue_comp_unit (per_cu, pretend_language); | |
6371 | ||
6372 | return 1; | |
6373 | } | |
6374 | ||
10b3939b DJ |
6375 | /* Process the queue. */ |
6376 | ||
6377 | static void | |
a0f42c21 | 6378 | process_queue (void) |
10b3939b DJ |
6379 | { |
6380 | struct dwarf2_queue_item *item, *next_item; | |
6381 | ||
45cfd468 DE |
6382 | if (dwarf2_read_debug) |
6383 | { | |
6384 | fprintf_unfiltered (gdb_stdlog, | |
6385 | "Expanding one or more symtabs of objfile %s ...\n", | |
6386 | dwarf2_per_objfile->objfile->name); | |
6387 | } | |
6388 | ||
03dd20cc DJ |
6389 | /* The queue starts out with one item, but following a DIE reference |
6390 | may load a new CU, adding it to the end of the queue. */ | |
10b3939b DJ |
6391 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) |
6392 | { | |
9291a0cd TT |
6393 | if (dwarf2_per_objfile->using_index |
6394 | ? !item->per_cu->v.quick->symtab | |
6395 | : (item->per_cu->v.psymtab && !item->per_cu->v.psymtab->readin)) | |
f4dc4d17 DE |
6396 | { |
6397 | struct dwarf2_per_cu_data *per_cu = item->per_cu; | |
6398 | ||
6399 | if (dwarf2_read_debug) | |
6400 | { | |
6401 | fprintf_unfiltered (gdb_stdlog, | |
6402 | "Expanding symtab of %s at offset 0x%x\n", | |
6403 | per_cu->is_debug_types ? "TU" : "CU", | |
6404 | per_cu->offset.sect_off); | |
6405 | } | |
6406 | ||
6407 | if (per_cu->is_debug_types) | |
6408 | process_full_type_unit (per_cu, item->pretend_language); | |
6409 | else | |
6410 | process_full_comp_unit (per_cu, item->pretend_language); | |
6411 | ||
6412 | if (dwarf2_read_debug) | |
6413 | { | |
6414 | fprintf_unfiltered (gdb_stdlog, | |
6415 | "Done expanding %s at offset 0x%x\n", | |
6416 | per_cu->is_debug_types ? "TU" : "CU", | |
6417 | per_cu->offset.sect_off); | |
6418 | } | |
6419 | } | |
10b3939b DJ |
6420 | |
6421 | item->per_cu->queued = 0; | |
6422 | next_item = item->next; | |
6423 | xfree (item); | |
6424 | } | |
6425 | ||
6426 | dwarf2_queue_tail = NULL; | |
45cfd468 DE |
6427 | |
6428 | if (dwarf2_read_debug) | |
6429 | { | |
6430 | fprintf_unfiltered (gdb_stdlog, "Done expanding symtabs of %s.\n", | |
6431 | dwarf2_per_objfile->objfile->name); | |
6432 | } | |
10b3939b DJ |
6433 | } |
6434 | ||
6435 | /* Free all allocated queue entries. This function only releases anything if | |
6436 | an error was thrown; if the queue was processed then it would have been | |
6437 | freed as we went along. */ | |
6438 | ||
6439 | static void | |
6440 | dwarf2_release_queue (void *dummy) | |
6441 | { | |
6442 | struct dwarf2_queue_item *item, *last; | |
6443 | ||
6444 | item = dwarf2_queue; | |
6445 | while (item) | |
6446 | { | |
6447 | /* Anything still marked queued is likely to be in an | |
6448 | inconsistent state, so discard it. */ | |
6449 | if (item->per_cu->queued) | |
6450 | { | |
6451 | if (item->per_cu->cu != NULL) | |
dee91e82 | 6452 | free_one_cached_comp_unit (item->per_cu); |
10b3939b DJ |
6453 | item->per_cu->queued = 0; |
6454 | } | |
6455 | ||
6456 | last = item; | |
6457 | item = item->next; | |
6458 | xfree (last); | |
6459 | } | |
6460 | ||
6461 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
6462 | } | |
6463 | ||
6464 | /* Read in full symbols for PST, and anything it depends on. */ | |
6465 | ||
c906108c | 6466 | static void |
fba45db2 | 6467 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c | 6468 | { |
10b3939b | 6469 | struct dwarf2_per_cu_data *per_cu; |
aaa75496 JB |
6470 | int i; |
6471 | ||
95554aad TT |
6472 | if (pst->readin) |
6473 | return; | |
6474 | ||
aaa75496 | 6475 | for (i = 0; i < pst->number_of_dependencies; i++) |
95554aad TT |
6476 | if (!pst->dependencies[i]->readin |
6477 | && pst->dependencies[i]->user == NULL) | |
aaa75496 JB |
6478 | { |
6479 | /* Inform about additional files that need to be read in. */ | |
6480 | if (info_verbose) | |
6481 | { | |
a3f17187 | 6482 | /* FIXME: i18n: Need to make this a single string. */ |
aaa75496 JB |
6483 | fputs_filtered (" ", gdb_stdout); |
6484 | wrap_here (""); | |
6485 | fputs_filtered ("and ", gdb_stdout); | |
6486 | wrap_here (""); | |
6487 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
0963b4bd | 6488 | wrap_here (""); /* Flush output. */ |
aaa75496 JB |
6489 | gdb_flush (gdb_stdout); |
6490 | } | |
6491 | psymtab_to_symtab_1 (pst->dependencies[i]); | |
6492 | } | |
6493 | ||
e38df1d0 | 6494 | per_cu = pst->read_symtab_private; |
10b3939b DJ |
6495 | |
6496 | if (per_cu == NULL) | |
aaa75496 JB |
6497 | { |
6498 | /* It's an include file, no symbols to read for it. | |
6499 | Everything is in the parent symtab. */ | |
6500 | pst->readin = 1; | |
6501 | return; | |
6502 | } | |
c906108c | 6503 | |
a0f42c21 | 6504 | dw2_do_instantiate_symtab (per_cu); |
10b3939b DJ |
6505 | } |
6506 | ||
dee91e82 DE |
6507 | /* Trivial hash function for die_info: the hash value of a DIE |
6508 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 6509 | |
dee91e82 DE |
6510 | static hashval_t |
6511 | die_hash (const void *item) | |
10b3939b | 6512 | { |
dee91e82 | 6513 | const struct die_info *die = item; |
6502dd73 | 6514 | |
dee91e82 DE |
6515 | return die->offset.sect_off; |
6516 | } | |
63d06c5c | 6517 | |
dee91e82 DE |
6518 | /* Trivial comparison function for die_info structures: two DIEs |
6519 | are equal if they have the same offset. */ | |
98bfdba5 | 6520 | |
dee91e82 DE |
6521 | static int |
6522 | die_eq (const void *item_lhs, const void *item_rhs) | |
6523 | { | |
6524 | const struct die_info *die_lhs = item_lhs; | |
6525 | const struct die_info *die_rhs = item_rhs; | |
c906108c | 6526 | |
dee91e82 DE |
6527 | return die_lhs->offset.sect_off == die_rhs->offset.sect_off; |
6528 | } | |
c906108c | 6529 | |
dee91e82 DE |
6530 | /* die_reader_func for load_full_comp_unit. |
6531 | This is identical to read_signatured_type_reader, | |
6532 | but is kept separate for now. */ | |
c906108c | 6533 | |
dee91e82 DE |
6534 | static void |
6535 | load_full_comp_unit_reader (const struct die_reader_specs *reader, | |
6536 | gdb_byte *info_ptr, | |
6537 | struct die_info *comp_unit_die, | |
6538 | int has_children, | |
6539 | void *data) | |
6540 | { | |
6541 | struct dwarf2_cu *cu = reader->cu; | |
95554aad | 6542 | enum language *language_ptr = data; |
6caca83c | 6543 | |
dee91e82 DE |
6544 | gdb_assert (cu->die_hash == NULL); |
6545 | cu->die_hash = | |
6546 | htab_create_alloc_ex (cu->header.length / 12, | |
6547 | die_hash, | |
6548 | die_eq, | |
6549 | NULL, | |
6550 | &cu->comp_unit_obstack, | |
6551 | hashtab_obstack_allocate, | |
6552 | dummy_obstack_deallocate); | |
e142c38c | 6553 | |
dee91e82 DE |
6554 | if (has_children) |
6555 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
6556 | &info_ptr, comp_unit_die); | |
6557 | cu->dies = comp_unit_die; | |
6558 | /* comp_unit_die is not stored in die_hash, no need. */ | |
10b3939b DJ |
6559 | |
6560 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 6561 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 6562 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
6563 | or we won't be able to build types correctly. |
6564 | Similarly, if we do not read the producer, we can not apply | |
6565 | producer-specific interpretation. */ | |
95554aad | 6566 | prepare_one_comp_unit (cu, cu->dies, *language_ptr); |
dee91e82 | 6567 | } |
10b3939b | 6568 | |
dee91e82 | 6569 | /* Load the DIEs associated with PER_CU into memory. */ |
a6c727b2 | 6570 | |
dee91e82 | 6571 | static void |
95554aad TT |
6572 | load_full_comp_unit (struct dwarf2_per_cu_data *this_cu, |
6573 | enum language pretend_language) | |
dee91e82 | 6574 | { |
3019eac3 | 6575 | gdb_assert (! this_cu->is_debug_types); |
c5b7e1cb | 6576 | |
f4dc4d17 DE |
6577 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, |
6578 | load_full_comp_unit_reader, &pretend_language); | |
10b3939b DJ |
6579 | } |
6580 | ||
3da10d80 KS |
6581 | /* Add a DIE to the delayed physname list. */ |
6582 | ||
6583 | static void | |
6584 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
6585 | const char *name, struct die_info *die, | |
6586 | struct dwarf2_cu *cu) | |
6587 | { | |
6588 | struct delayed_method_info mi; | |
6589 | mi.type = type; | |
6590 | mi.fnfield_index = fnfield_index; | |
6591 | mi.index = index; | |
6592 | mi.name = name; | |
6593 | mi.die = die; | |
6594 | VEC_safe_push (delayed_method_info, cu->method_list, &mi); | |
6595 | } | |
6596 | ||
6597 | /* A cleanup for freeing the delayed method list. */ | |
6598 | ||
6599 | static void | |
6600 | free_delayed_list (void *ptr) | |
6601 | { | |
6602 | struct dwarf2_cu *cu = (struct dwarf2_cu *) ptr; | |
6603 | if (cu->method_list != NULL) | |
6604 | { | |
6605 | VEC_free (delayed_method_info, cu->method_list); | |
6606 | cu->method_list = NULL; | |
6607 | } | |
6608 | } | |
6609 | ||
6610 | /* Compute the physnames of any methods on the CU's method list. | |
6611 | ||
6612 | The computation of method physnames is delayed in order to avoid the | |
6613 | (bad) condition that one of the method's formal parameters is of an as yet | |
6614 | incomplete type. */ | |
6615 | ||
6616 | static void | |
6617 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
6618 | { | |
6619 | int i; | |
6620 | struct delayed_method_info *mi; | |
6621 | for (i = 0; VEC_iterate (delayed_method_info, cu->method_list, i, mi) ; ++i) | |
6622 | { | |
1d06ead6 | 6623 | const char *physname; |
3da10d80 KS |
6624 | struct fn_fieldlist *fn_flp |
6625 | = &TYPE_FN_FIELDLIST (mi->type, mi->fnfield_index); | |
1d06ead6 | 6626 | physname = dwarf2_physname ((char *) mi->name, mi->die, cu); |
3da10d80 KS |
6627 | fn_flp->fn_fields[mi->index].physname = physname ? physname : ""; |
6628 | } | |
6629 | } | |
6630 | ||
a766d390 DE |
6631 | /* Go objects should be embedded in a DW_TAG_module DIE, |
6632 | and it's not clear if/how imported objects will appear. | |
6633 | To keep Go support simple until that's worked out, | |
6634 | go back through what we've read and create something usable. | |
6635 | We could do this while processing each DIE, and feels kinda cleaner, | |
6636 | but that way is more invasive. | |
6637 | This is to, for example, allow the user to type "p var" or "b main" | |
6638 | without having to specify the package name, and allow lookups | |
6639 | of module.object to work in contexts that use the expression | |
6640 | parser. */ | |
6641 | ||
6642 | static void | |
6643 | fixup_go_packaging (struct dwarf2_cu *cu) | |
6644 | { | |
6645 | char *package_name = NULL; | |
6646 | struct pending *list; | |
6647 | int i; | |
6648 | ||
6649 | for (list = global_symbols; list != NULL; list = list->next) | |
6650 | { | |
6651 | for (i = 0; i < list->nsyms; ++i) | |
6652 | { | |
6653 | struct symbol *sym = list->symbol[i]; | |
6654 | ||
6655 | if (SYMBOL_LANGUAGE (sym) == language_go | |
6656 | && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
6657 | { | |
6658 | char *this_package_name = go_symbol_package_name (sym); | |
6659 | ||
6660 | if (this_package_name == NULL) | |
6661 | continue; | |
6662 | if (package_name == NULL) | |
6663 | package_name = this_package_name; | |
6664 | else | |
6665 | { | |
6666 | if (strcmp (package_name, this_package_name) != 0) | |
6667 | complaint (&symfile_complaints, | |
6668 | _("Symtab %s has objects from two different Go packages: %s and %s"), | |
6669 | (sym->symtab && sym->symtab->filename | |
6670 | ? sym->symtab->filename | |
6671 | : cu->objfile->name), | |
6672 | this_package_name, package_name); | |
6673 | xfree (this_package_name); | |
6674 | } | |
6675 | } | |
6676 | } | |
6677 | } | |
6678 | ||
6679 | if (package_name != NULL) | |
6680 | { | |
6681 | struct objfile *objfile = cu->objfile; | |
6682 | struct type *type = init_type (TYPE_CODE_MODULE, 0, 0, | |
6683 | package_name, objfile); | |
6684 | struct symbol *sym; | |
6685 | ||
6686 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
6687 | ||
6688 | sym = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symbol); | |
6689 | SYMBOL_SET_LANGUAGE (sym, language_go); | |
6690 | SYMBOL_SET_NAMES (sym, package_name, strlen (package_name), 1, objfile); | |
6691 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, | |
6692 | e.g., "main" finds the "main" module and not C's main(). */ | |
6693 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
6694 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
6695 | SYMBOL_TYPE (sym) = type; | |
6696 | ||
6697 | add_symbol_to_list (sym, &global_symbols); | |
6698 | ||
6699 | xfree (package_name); | |
6700 | } | |
6701 | } | |
6702 | ||
95554aad TT |
6703 | static void compute_symtab_includes (struct dwarf2_per_cu_data *per_cu); |
6704 | ||
6705 | /* Return the symtab for PER_CU. This works properly regardless of | |
6706 | whether we're using the index or psymtabs. */ | |
6707 | ||
6708 | static struct symtab * | |
6709 | get_symtab (struct dwarf2_per_cu_data *per_cu) | |
6710 | { | |
6711 | return (dwarf2_per_objfile->using_index | |
6712 | ? per_cu->v.quick->symtab | |
6713 | : per_cu->v.psymtab->symtab); | |
6714 | } | |
6715 | ||
6716 | /* A helper function for computing the list of all symbol tables | |
6717 | included by PER_CU. */ | |
6718 | ||
6719 | static void | |
6720 | recursively_compute_inclusions (VEC (dwarf2_per_cu_ptr) **result, | |
6721 | htab_t all_children, | |
6722 | struct dwarf2_per_cu_data *per_cu) | |
6723 | { | |
6724 | void **slot; | |
6725 | int ix; | |
6726 | struct dwarf2_per_cu_data *iter; | |
6727 | ||
6728 | slot = htab_find_slot (all_children, per_cu, INSERT); | |
6729 | if (*slot != NULL) | |
6730 | { | |
6731 | /* This inclusion and its children have been processed. */ | |
6732 | return; | |
6733 | } | |
6734 | ||
6735 | *slot = per_cu; | |
6736 | /* Only add a CU if it has a symbol table. */ | |
6737 | if (get_symtab (per_cu) != NULL) | |
6738 | VEC_safe_push (dwarf2_per_cu_ptr, *result, per_cu); | |
6739 | ||
6740 | for (ix = 0; | |
f4dc4d17 | 6741 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->s.imported_symtabs, ix, iter); |
95554aad TT |
6742 | ++ix) |
6743 | recursively_compute_inclusions (result, all_children, iter); | |
6744 | } | |
6745 | ||
6746 | /* Compute the symtab 'includes' fields for the symtab related to | |
6747 | PER_CU. */ | |
6748 | ||
6749 | static void | |
6750 | compute_symtab_includes (struct dwarf2_per_cu_data *per_cu) | |
6751 | { | |
f4dc4d17 DE |
6752 | gdb_assert (! per_cu->is_debug_types); |
6753 | ||
6754 | if (!VEC_empty (dwarf2_per_cu_ptr, per_cu->s.imported_symtabs)) | |
95554aad TT |
6755 | { |
6756 | int ix, len; | |
6757 | struct dwarf2_per_cu_data *iter; | |
6758 | VEC (dwarf2_per_cu_ptr) *result_children = NULL; | |
6759 | htab_t all_children; | |
6760 | struct symtab *symtab = get_symtab (per_cu); | |
6761 | ||
6762 | /* If we don't have a symtab, we can just skip this case. */ | |
6763 | if (symtab == NULL) | |
6764 | return; | |
6765 | ||
6766 | all_children = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, | |
6767 | NULL, xcalloc, xfree); | |
6768 | ||
6769 | for (ix = 0; | |
f4dc4d17 | 6770 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->s.imported_symtabs, |
95554aad TT |
6771 | ix, iter); |
6772 | ++ix) | |
6773 | recursively_compute_inclusions (&result_children, all_children, iter); | |
6774 | ||
6775 | /* Now we have a transitive closure of all the included CUs, so | |
6776 | we can convert it to a list of symtabs. */ | |
6777 | len = VEC_length (dwarf2_per_cu_ptr, result_children); | |
6778 | symtab->includes | |
6779 | = obstack_alloc (&dwarf2_per_objfile->objfile->objfile_obstack, | |
6780 | (len + 1) * sizeof (struct symtab *)); | |
6781 | for (ix = 0; | |
6782 | VEC_iterate (dwarf2_per_cu_ptr, result_children, ix, iter); | |
6783 | ++ix) | |
6784 | symtab->includes[ix] = get_symtab (iter); | |
6785 | symtab->includes[len] = NULL; | |
6786 | ||
6787 | VEC_free (dwarf2_per_cu_ptr, result_children); | |
6788 | htab_delete (all_children); | |
6789 | } | |
6790 | } | |
6791 | ||
6792 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
6793 | read. */ | |
6794 | ||
6795 | static void | |
6796 | process_cu_includes (void) | |
6797 | { | |
6798 | int ix; | |
6799 | struct dwarf2_per_cu_data *iter; | |
6800 | ||
6801 | for (ix = 0; | |
6802 | VEC_iterate (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus, | |
6803 | ix, iter); | |
6804 | ++ix) | |
f4dc4d17 DE |
6805 | { |
6806 | if (! iter->is_debug_types) | |
6807 | compute_symtab_includes (iter); | |
6808 | } | |
95554aad TT |
6809 | |
6810 | VEC_free (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus); | |
6811 | } | |
6812 | ||
9cdd5dbd | 6813 | /* Generate full symbol information for PER_CU, whose DIEs have |
10b3939b DJ |
6814 | already been loaded into memory. */ |
6815 | ||
6816 | static void | |
95554aad TT |
6817 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu, |
6818 | enum language pretend_language) | |
10b3939b | 6819 | { |
10b3939b | 6820 | struct dwarf2_cu *cu = per_cu->cu; |
9291a0cd | 6821 | struct objfile *objfile = per_cu->objfile; |
10b3939b DJ |
6822 | CORE_ADDR lowpc, highpc; |
6823 | struct symtab *symtab; | |
3da10d80 | 6824 | struct cleanup *back_to, *delayed_list_cleanup; |
10b3939b | 6825 | CORE_ADDR baseaddr; |
4359dff1 | 6826 | struct block *static_block; |
10b3939b DJ |
6827 | |
6828 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
6829 | ||
10b3939b DJ |
6830 | buildsym_init (); |
6831 | back_to = make_cleanup (really_free_pendings, NULL); | |
3da10d80 | 6832 | delayed_list_cleanup = make_cleanup (free_delayed_list, cu); |
10b3939b DJ |
6833 | |
6834 | cu->list_in_scope = &file_symbols; | |
c906108c | 6835 | |
95554aad TT |
6836 | cu->language = pretend_language; |
6837 | cu->language_defn = language_def (cu->language); | |
6838 | ||
c906108c | 6839 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 6840 | process_die (cu->dies, cu); |
c906108c | 6841 | |
a766d390 DE |
6842 | /* For now fudge the Go package. */ |
6843 | if (cu->language == language_go) | |
6844 | fixup_go_packaging (cu); | |
6845 | ||
3da10d80 KS |
6846 | /* Now that we have processed all the DIEs in the CU, all the types |
6847 | should be complete, and it should now be safe to compute all of the | |
6848 | physnames. */ | |
6849 | compute_delayed_physnames (cu); | |
6850 | do_cleanups (delayed_list_cleanup); | |
6851 | ||
fae299cd DC |
6852 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
6853 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
6854 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 6855 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 6856 | |
36586728 TT |
6857 | static_block |
6858 | = end_symtab_get_static_block (highpc + baseaddr, objfile, 0, | |
6859 | per_cu->s.imported_symtabs != NULL); | |
4359dff1 JK |
6860 | |
6861 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
6862 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
6863 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
6864 | addrmap to help ensure it has an accurate map of pc values belonging to | |
6865 | this comp unit. */ | |
6866 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
6867 | ||
6868 | symtab = end_symtab_from_static_block (static_block, objfile, | |
6869 | SECT_OFF_TEXT (objfile), 0); | |
c906108c | 6870 | |
8be455d7 | 6871 | if (symtab != NULL) |
c906108c | 6872 | { |
df15bd07 | 6873 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 6874 | |
8be455d7 JK |
6875 | /* Set symtab language to language from DW_AT_language. If the |
6876 | compilation is from a C file generated by language preprocessors, do | |
6877 | not set the language if it was already deduced by start_subfile. */ | |
6878 | if (!(cu->language == language_c && symtab->language != language_c)) | |
6879 | symtab->language = cu->language; | |
6880 | ||
6881 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
6882 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
6883 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
6884 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
6885 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
6886 | |
6887 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
6888 | needed, it would be wrong due to missing DW_AT_producer there. | |
6889 | ||
6890 | Still one can confuse GDB by using non-standard GCC compilation | |
6891 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
6892 | */ | |
ab260dad | 6893 | if (cu->has_loclist && gcc_4_minor >= 5) |
8be455d7 | 6894 | symtab->locations_valid = 1; |
e0d00bc7 JK |
6895 | |
6896 | if (gcc_4_minor >= 5) | |
6897 | symtab->epilogue_unwind_valid = 1; | |
96408a79 SA |
6898 | |
6899 | symtab->call_site_htab = cu->call_site_htab; | |
c906108c | 6900 | } |
9291a0cd TT |
6901 | |
6902 | if (dwarf2_per_objfile->using_index) | |
6903 | per_cu->v.quick->symtab = symtab; | |
6904 | else | |
6905 | { | |
6906 | struct partial_symtab *pst = per_cu->v.psymtab; | |
6907 | pst->symtab = symtab; | |
6908 | pst->readin = 1; | |
6909 | } | |
c906108c | 6910 | |
95554aad TT |
6911 | /* Push it for inclusion processing later. */ |
6912 | VEC_safe_push (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus, per_cu); | |
6913 | ||
c906108c | 6914 | do_cleanups (back_to); |
f4dc4d17 | 6915 | } |
45cfd468 | 6916 | |
f4dc4d17 DE |
6917 | /* Generate full symbol information for type unit PER_CU, whose DIEs have |
6918 | already been loaded into memory. */ | |
6919 | ||
6920 | static void | |
6921 | process_full_type_unit (struct dwarf2_per_cu_data *per_cu, | |
6922 | enum language pretend_language) | |
6923 | { | |
6924 | struct dwarf2_cu *cu = per_cu->cu; | |
6925 | struct objfile *objfile = per_cu->objfile; | |
6926 | struct symtab *symtab; | |
6927 | struct cleanup *back_to, *delayed_list_cleanup; | |
6928 | ||
6929 | buildsym_init (); | |
6930 | back_to = make_cleanup (really_free_pendings, NULL); | |
6931 | delayed_list_cleanup = make_cleanup (free_delayed_list, cu); | |
6932 | ||
6933 | cu->list_in_scope = &file_symbols; | |
6934 | ||
6935 | cu->language = pretend_language; | |
6936 | cu->language_defn = language_def (cu->language); | |
6937 | ||
6938 | /* The symbol tables are set up in read_type_unit_scope. */ | |
6939 | process_die (cu->dies, cu); | |
6940 | ||
6941 | /* For now fudge the Go package. */ | |
6942 | if (cu->language == language_go) | |
6943 | fixup_go_packaging (cu); | |
6944 | ||
6945 | /* Now that we have processed all the DIEs in the CU, all the types | |
6946 | should be complete, and it should now be safe to compute all of the | |
6947 | physnames. */ | |
6948 | compute_delayed_physnames (cu); | |
6949 | do_cleanups (delayed_list_cleanup); | |
6950 | ||
6951 | /* TUs share symbol tables. | |
6952 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
6953 | of it with end_expandable_symtab. Otherwise, complete the addition of |
6954 | this TU's symbols to the existing symtab. */ | |
f4dc4d17 | 6955 | if (per_cu->s.type_unit_group->primary_symtab == NULL) |
45cfd468 | 6956 | { |
f4dc4d17 DE |
6957 | symtab = end_expandable_symtab (0, objfile, SECT_OFF_TEXT (objfile)); |
6958 | per_cu->s.type_unit_group->primary_symtab = symtab; | |
6959 | ||
6960 | if (symtab != NULL) | |
6961 | { | |
6962 | /* Set symtab language to language from DW_AT_language. If the | |
6963 | compilation is from a C file generated by language preprocessors, | |
6964 | do not set the language if it was already deduced by | |
6965 | start_subfile. */ | |
6966 | if (!(cu->language == language_c && symtab->language != language_c)) | |
6967 | symtab->language = cu->language; | |
6968 | } | |
6969 | } | |
6970 | else | |
6971 | { | |
6972 | augment_type_symtab (objfile, | |
6973 | per_cu->s.type_unit_group->primary_symtab); | |
6974 | symtab = per_cu->s.type_unit_group->primary_symtab; | |
6975 | } | |
6976 | ||
6977 | if (dwarf2_per_objfile->using_index) | |
6978 | per_cu->v.quick->symtab = symtab; | |
6979 | else | |
6980 | { | |
6981 | struct partial_symtab *pst = per_cu->v.psymtab; | |
6982 | pst->symtab = symtab; | |
6983 | pst->readin = 1; | |
45cfd468 | 6984 | } |
f4dc4d17 DE |
6985 | |
6986 | do_cleanups (back_to); | |
c906108c SS |
6987 | } |
6988 | ||
95554aad TT |
6989 | /* Process an imported unit DIE. */ |
6990 | ||
6991 | static void | |
6992 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
6993 | { | |
6994 | struct attribute *attr; | |
6995 | ||
f4dc4d17 DE |
6996 | /* For now we don't handle imported units in type units. */ |
6997 | if (cu->per_cu->is_debug_types) | |
6998 | { | |
6999 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
7000 | " supported in type units [in module %s]"), | |
7001 | cu->objfile->name); | |
7002 | } | |
7003 | ||
95554aad TT |
7004 | attr = dwarf2_attr (die, DW_AT_import, cu); |
7005 | if (attr != NULL) | |
7006 | { | |
7007 | struct dwarf2_per_cu_data *per_cu; | |
7008 | struct symtab *imported_symtab; | |
7009 | sect_offset offset; | |
36586728 | 7010 | int is_dwz; |
95554aad TT |
7011 | |
7012 | offset = dwarf2_get_ref_die_offset (attr); | |
36586728 TT |
7013 | is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); |
7014 | per_cu = dwarf2_find_containing_comp_unit (offset, is_dwz, cu->objfile); | |
95554aad TT |
7015 | |
7016 | /* Queue the unit, if needed. */ | |
7017 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) | |
7018 | load_full_comp_unit (per_cu, cu->language); | |
7019 | ||
f4dc4d17 | 7020 | VEC_safe_push (dwarf2_per_cu_ptr, cu->per_cu->s.imported_symtabs, |
95554aad TT |
7021 | per_cu); |
7022 | } | |
7023 | } | |
7024 | ||
c906108c SS |
7025 | /* Process a die and its children. */ |
7026 | ||
7027 | static void | |
e7c27a73 | 7028 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7029 | { |
7030 | switch (die->tag) | |
7031 | { | |
7032 | case DW_TAG_padding: | |
7033 | break; | |
7034 | case DW_TAG_compile_unit: | |
95554aad | 7035 | case DW_TAG_partial_unit: |
e7c27a73 | 7036 | read_file_scope (die, cu); |
c906108c | 7037 | break; |
348e048f DE |
7038 | case DW_TAG_type_unit: |
7039 | read_type_unit_scope (die, cu); | |
7040 | break; | |
c906108c | 7041 | case DW_TAG_subprogram: |
c906108c | 7042 | case DW_TAG_inlined_subroutine: |
edb3359d | 7043 | read_func_scope (die, cu); |
c906108c SS |
7044 | break; |
7045 | case DW_TAG_lexical_block: | |
14898363 L |
7046 | case DW_TAG_try_block: |
7047 | case DW_TAG_catch_block: | |
e7c27a73 | 7048 | read_lexical_block_scope (die, cu); |
c906108c | 7049 | break; |
96408a79 SA |
7050 | case DW_TAG_GNU_call_site: |
7051 | read_call_site_scope (die, cu); | |
7052 | break; | |
c906108c | 7053 | case DW_TAG_class_type: |
680b30c7 | 7054 | case DW_TAG_interface_type: |
c906108c SS |
7055 | case DW_TAG_structure_type: |
7056 | case DW_TAG_union_type: | |
134d01f1 | 7057 | process_structure_scope (die, cu); |
c906108c SS |
7058 | break; |
7059 | case DW_TAG_enumeration_type: | |
134d01f1 | 7060 | process_enumeration_scope (die, cu); |
c906108c | 7061 | break; |
134d01f1 | 7062 | |
f792889a DJ |
7063 | /* These dies have a type, but processing them does not create |
7064 | a symbol or recurse to process the children. Therefore we can | |
7065 | read them on-demand through read_type_die. */ | |
c906108c | 7066 | case DW_TAG_subroutine_type: |
72019c9c | 7067 | case DW_TAG_set_type: |
c906108c | 7068 | case DW_TAG_array_type: |
c906108c | 7069 | case DW_TAG_pointer_type: |
c906108c | 7070 | case DW_TAG_ptr_to_member_type: |
c906108c | 7071 | case DW_TAG_reference_type: |
c906108c | 7072 | case DW_TAG_string_type: |
c906108c | 7073 | break; |
134d01f1 | 7074 | |
c906108c | 7075 | case DW_TAG_base_type: |
a02abb62 | 7076 | case DW_TAG_subrange_type: |
cb249c71 | 7077 | case DW_TAG_typedef: |
134d01f1 DJ |
7078 | /* Add a typedef symbol for the type definition, if it has a |
7079 | DW_AT_name. */ | |
f792889a | 7080 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 7081 | break; |
c906108c | 7082 | case DW_TAG_common_block: |
e7c27a73 | 7083 | read_common_block (die, cu); |
c906108c SS |
7084 | break; |
7085 | case DW_TAG_common_inclusion: | |
7086 | break; | |
d9fa45fe | 7087 | case DW_TAG_namespace: |
63d06c5c | 7088 | processing_has_namespace_info = 1; |
e7c27a73 | 7089 | read_namespace (die, cu); |
d9fa45fe | 7090 | break; |
5d7cb8df | 7091 | case DW_TAG_module: |
f55ee35c | 7092 | processing_has_namespace_info = 1; |
5d7cb8df JK |
7093 | read_module (die, cu); |
7094 | break; | |
d9fa45fe DC |
7095 | case DW_TAG_imported_declaration: |
7096 | case DW_TAG_imported_module: | |
63d06c5c | 7097 | processing_has_namespace_info = 1; |
27aa8d6a SW |
7098 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
7099 | || cu->language != language_fortran)) | |
7100 | complaint (&symfile_complaints, _("Tag '%s' has unexpected children"), | |
7101 | dwarf_tag_name (die->tag)); | |
7102 | read_import_statement (die, cu); | |
d9fa45fe | 7103 | break; |
95554aad TT |
7104 | |
7105 | case DW_TAG_imported_unit: | |
7106 | process_imported_unit_die (die, cu); | |
7107 | break; | |
7108 | ||
c906108c | 7109 | default: |
e7c27a73 | 7110 | new_symbol (die, NULL, cu); |
c906108c SS |
7111 | break; |
7112 | } | |
7113 | } | |
7114 | ||
94af9270 KS |
7115 | /* A helper function for dwarf2_compute_name which determines whether DIE |
7116 | needs to have the name of the scope prepended to the name listed in the | |
7117 | die. */ | |
7118 | ||
7119 | static int | |
7120 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
7121 | { | |
1c809c68 TT |
7122 | struct attribute *attr; |
7123 | ||
94af9270 KS |
7124 | switch (die->tag) |
7125 | { | |
7126 | case DW_TAG_namespace: | |
7127 | case DW_TAG_typedef: | |
7128 | case DW_TAG_class_type: | |
7129 | case DW_TAG_interface_type: | |
7130 | case DW_TAG_structure_type: | |
7131 | case DW_TAG_union_type: | |
7132 | case DW_TAG_enumeration_type: | |
7133 | case DW_TAG_enumerator: | |
7134 | case DW_TAG_subprogram: | |
7135 | case DW_TAG_member: | |
7136 | return 1; | |
7137 | ||
7138 | case DW_TAG_variable: | |
c2b0a229 | 7139 | case DW_TAG_constant: |
94af9270 KS |
7140 | /* We only need to prefix "globally" visible variables. These include |
7141 | any variable marked with DW_AT_external or any variable that | |
7142 | lives in a namespace. [Variables in anonymous namespaces | |
7143 | require prefixing, but they are not DW_AT_external.] */ | |
7144 | ||
7145 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
7146 | { | |
7147 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 7148 | |
94af9270 KS |
7149 | return die_needs_namespace (die_specification (die, &spec_cu), |
7150 | spec_cu); | |
7151 | } | |
7152 | ||
1c809c68 | 7153 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
7154 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
7155 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
7156 | return 0; |
7157 | /* A variable in a lexical block of some kind does not need a | |
7158 | namespace, even though in C++ such variables may be external | |
7159 | and have a mangled name. */ | |
7160 | if (die->parent->tag == DW_TAG_lexical_block | |
7161 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
7162 | || die->parent->tag == DW_TAG_catch_block |
7163 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
7164 | return 0; |
7165 | return 1; | |
94af9270 KS |
7166 | |
7167 | default: | |
7168 | return 0; | |
7169 | } | |
7170 | } | |
7171 | ||
98bfdba5 PA |
7172 | /* Retrieve the last character from a mem_file. */ |
7173 | ||
7174 | static void | |
7175 | do_ui_file_peek_last (void *object, const char *buffer, long length) | |
7176 | { | |
7177 | char *last_char_p = (char *) object; | |
7178 | ||
7179 | if (length > 0) | |
7180 | *last_char_p = buffer[length - 1]; | |
7181 | } | |
7182 | ||
94af9270 | 7183 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 DE |
7184 | compute the physname for the object, which include a method's: |
7185 | - formal parameters (C++/Java), | |
7186 | - receiver type (Go), | |
7187 | - return type (Java). | |
7188 | ||
7189 | The term "physname" is a bit confusing. | |
7190 | For C++, for example, it is the demangled name. | |
7191 | For Go, for example, it's the mangled name. | |
94af9270 | 7192 | |
af6b7be1 JB |
7193 | For Ada, return the DIE's linkage name rather than the fully qualified |
7194 | name. PHYSNAME is ignored.. | |
7195 | ||
94af9270 KS |
7196 | The result is allocated on the objfile_obstack and canonicalized. */ |
7197 | ||
7198 | static const char * | |
7199 | dwarf2_compute_name (char *name, struct die_info *die, struct dwarf2_cu *cu, | |
7200 | int physname) | |
7201 | { | |
bb5ed363 DE |
7202 | struct objfile *objfile = cu->objfile; |
7203 | ||
94af9270 KS |
7204 | if (name == NULL) |
7205 | name = dwarf2_name (die, cu); | |
7206 | ||
f55ee35c JK |
7207 | /* For Fortran GDB prefers DW_AT_*linkage_name if present but otherwise |
7208 | compute it by typename_concat inside GDB. */ | |
7209 | if (cu->language == language_ada | |
7210 | || (cu->language == language_fortran && physname)) | |
7211 | { | |
7212 | /* For Ada unit, we prefer the linkage name over the name, as | |
7213 | the former contains the exported name, which the user expects | |
7214 | to be able to reference. Ideally, we want the user to be able | |
7215 | to reference this entity using either natural or linkage name, | |
7216 | but we haven't started looking at this enhancement yet. */ | |
7217 | struct attribute *attr; | |
7218 | ||
7219 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
7220 | if (attr == NULL) | |
7221 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
7222 | if (attr && DW_STRING (attr)) | |
7223 | return DW_STRING (attr); | |
7224 | } | |
7225 | ||
94af9270 KS |
7226 | /* These are the only languages we know how to qualify names in. */ |
7227 | if (name != NULL | |
f55ee35c JK |
7228 | && (cu->language == language_cplus || cu->language == language_java |
7229 | || cu->language == language_fortran)) | |
94af9270 KS |
7230 | { |
7231 | if (die_needs_namespace (die, cu)) | |
7232 | { | |
7233 | long length; | |
0d5cff50 | 7234 | const char *prefix; |
94af9270 KS |
7235 | struct ui_file *buf; |
7236 | ||
7237 | prefix = determine_prefix (die, cu); | |
7238 | buf = mem_fileopen (); | |
7239 | if (*prefix != '\0') | |
7240 | { | |
f55ee35c JK |
7241 | char *prefixed_name = typename_concat (NULL, prefix, name, |
7242 | physname, cu); | |
9a619af0 | 7243 | |
94af9270 KS |
7244 | fputs_unfiltered (prefixed_name, buf); |
7245 | xfree (prefixed_name); | |
7246 | } | |
7247 | else | |
62d5b8da | 7248 | fputs_unfiltered (name, buf); |
94af9270 | 7249 | |
98bfdba5 PA |
7250 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
7251 | as children with DW_TAG_template_type_param or | |
7252 | DW_TAG_value_type_param. If the latter, add them to the name | |
7253 | here. If the name already has template parameters, then | |
7254 | skip this step; some versions of GCC emit both, and | |
7255 | it is more efficient to use the pre-computed name. | |
7256 | ||
7257 | Something to keep in mind about this process: it is very | |
7258 | unlikely, or in some cases downright impossible, to produce | |
7259 | something that will match the mangled name of a function. | |
7260 | If the definition of the function has the same debug info, | |
7261 | we should be able to match up with it anyway. But fallbacks | |
7262 | using the minimal symbol, for instance to find a method | |
7263 | implemented in a stripped copy of libstdc++, will not work. | |
7264 | If we do not have debug info for the definition, we will have to | |
7265 | match them up some other way. | |
7266 | ||
7267 | When we do name matching there is a related problem with function | |
7268 | templates; two instantiated function templates are allowed to | |
7269 | differ only by their return types, which we do not add here. */ | |
7270 | ||
7271 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
7272 | { | |
7273 | struct attribute *attr; | |
7274 | struct die_info *child; | |
7275 | int first = 1; | |
7276 | ||
7277 | die->building_fullname = 1; | |
7278 | ||
7279 | for (child = die->child; child != NULL; child = child->sibling) | |
7280 | { | |
7281 | struct type *type; | |
12df843f | 7282 | LONGEST value; |
98bfdba5 PA |
7283 | gdb_byte *bytes; |
7284 | struct dwarf2_locexpr_baton *baton; | |
7285 | struct value *v; | |
7286 | ||
7287 | if (child->tag != DW_TAG_template_type_param | |
7288 | && child->tag != DW_TAG_template_value_param) | |
7289 | continue; | |
7290 | ||
7291 | if (first) | |
7292 | { | |
7293 | fputs_unfiltered ("<", buf); | |
7294 | first = 0; | |
7295 | } | |
7296 | else | |
7297 | fputs_unfiltered (", ", buf); | |
7298 | ||
7299 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
7300 | if (attr == NULL) | |
7301 | { | |
7302 | complaint (&symfile_complaints, | |
7303 | _("template parameter missing DW_AT_type")); | |
7304 | fputs_unfiltered ("UNKNOWN_TYPE", buf); | |
7305 | continue; | |
7306 | } | |
7307 | type = die_type (child, cu); | |
7308 | ||
7309 | if (child->tag == DW_TAG_template_type_param) | |
7310 | { | |
7311 | c_print_type (type, "", buf, -1, 0); | |
7312 | continue; | |
7313 | } | |
7314 | ||
7315 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
7316 | if (attr == NULL) | |
7317 | { | |
7318 | complaint (&symfile_complaints, | |
3e43a32a MS |
7319 | _("template parameter missing " |
7320 | "DW_AT_const_value")); | |
98bfdba5 PA |
7321 | fputs_unfiltered ("UNKNOWN_VALUE", buf); |
7322 | continue; | |
7323 | } | |
7324 | ||
7325 | dwarf2_const_value_attr (attr, type, name, | |
7326 | &cu->comp_unit_obstack, cu, | |
7327 | &value, &bytes, &baton); | |
7328 | ||
7329 | if (TYPE_NOSIGN (type)) | |
7330 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
7331 | changed, this can use value_print instead. */ | |
7332 | c_printchar (value, type, buf); | |
7333 | else | |
7334 | { | |
7335 | struct value_print_options opts; | |
7336 | ||
7337 | if (baton != NULL) | |
7338 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
7339 | baton->data, | |
7340 | baton->size, | |
7341 | baton->per_cu); | |
7342 | else if (bytes != NULL) | |
7343 | { | |
7344 | v = allocate_value (type); | |
7345 | memcpy (value_contents_writeable (v), bytes, | |
7346 | TYPE_LENGTH (type)); | |
7347 | } | |
7348 | else | |
7349 | v = value_from_longest (type, value); | |
7350 | ||
3e43a32a MS |
7351 | /* Specify decimal so that we do not depend on |
7352 | the radix. */ | |
98bfdba5 PA |
7353 | get_formatted_print_options (&opts, 'd'); |
7354 | opts.raw = 1; | |
7355 | value_print (v, buf, &opts); | |
7356 | release_value (v); | |
7357 | value_free (v); | |
7358 | } | |
7359 | } | |
7360 | ||
7361 | die->building_fullname = 0; | |
7362 | ||
7363 | if (!first) | |
7364 | { | |
7365 | /* Close the argument list, with a space if necessary | |
7366 | (nested templates). */ | |
7367 | char last_char = '\0'; | |
7368 | ui_file_put (buf, do_ui_file_peek_last, &last_char); | |
7369 | if (last_char == '>') | |
7370 | fputs_unfiltered (" >", buf); | |
7371 | else | |
7372 | fputs_unfiltered (">", buf); | |
7373 | } | |
7374 | } | |
7375 | ||
94af9270 KS |
7376 | /* For Java and C++ methods, append formal parameter type |
7377 | information, if PHYSNAME. */ | |
6e70227d | 7378 | |
94af9270 KS |
7379 | if (physname && die->tag == DW_TAG_subprogram |
7380 | && (cu->language == language_cplus | |
7381 | || cu->language == language_java)) | |
7382 | { | |
7383 | struct type *type = read_type_die (die, cu); | |
7384 | ||
3167638f | 7385 | c_type_print_args (type, buf, 1, cu->language); |
94af9270 KS |
7386 | |
7387 | if (cu->language == language_java) | |
7388 | { | |
7389 | /* For java, we must append the return type to method | |
0963b4bd | 7390 | names. */ |
94af9270 KS |
7391 | if (die->tag == DW_TAG_subprogram) |
7392 | java_print_type (TYPE_TARGET_TYPE (type), "", buf, | |
7393 | 0, 0); | |
7394 | } | |
7395 | else if (cu->language == language_cplus) | |
7396 | { | |
60430eff DJ |
7397 | /* Assume that an artificial first parameter is |
7398 | "this", but do not crash if it is not. RealView | |
7399 | marks unnamed (and thus unused) parameters as | |
7400 | artificial; there is no way to differentiate | |
7401 | the two cases. */ | |
94af9270 KS |
7402 | if (TYPE_NFIELDS (type) > 0 |
7403 | && TYPE_FIELD_ARTIFICIAL (type, 0) | |
60430eff | 7404 | && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_PTR |
3e43a32a MS |
7405 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, |
7406 | 0)))) | |
94af9270 KS |
7407 | fputs_unfiltered (" const", buf); |
7408 | } | |
7409 | } | |
7410 | ||
bb5ed363 | 7411 | name = ui_file_obsavestring (buf, &objfile->objfile_obstack, |
94af9270 KS |
7412 | &length); |
7413 | ui_file_delete (buf); | |
7414 | ||
7415 | if (cu->language == language_cplus) | |
7416 | { | |
7417 | char *cname | |
7418 | = dwarf2_canonicalize_name (name, cu, | |
bb5ed363 | 7419 | &objfile->objfile_obstack); |
9a619af0 | 7420 | |
94af9270 KS |
7421 | if (cname != NULL) |
7422 | name = cname; | |
7423 | } | |
7424 | } | |
7425 | } | |
7426 | ||
7427 | return name; | |
7428 | } | |
7429 | ||
0114d602 DJ |
7430 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
7431 | If scope qualifiers are appropriate they will be added. The result | |
7432 | will be allocated on the objfile_obstack, or NULL if the DIE does | |
94af9270 KS |
7433 | not have a name. NAME may either be from a previous call to |
7434 | dwarf2_name or NULL. | |
7435 | ||
0963b4bd | 7436 | The output string will be canonicalized (if C++/Java). */ |
0114d602 DJ |
7437 | |
7438 | static const char * | |
94af9270 | 7439 | dwarf2_full_name (char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 7440 | { |
94af9270 KS |
7441 | return dwarf2_compute_name (name, die, cu, 0); |
7442 | } | |
0114d602 | 7443 | |
94af9270 KS |
7444 | /* Construct a physname for the given DIE in CU. NAME may either be |
7445 | from a previous call to dwarf2_name or NULL. The result will be | |
7446 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
7447 | name. | |
0114d602 | 7448 | |
94af9270 | 7449 | The output string will be canonicalized (if C++/Java). */ |
0114d602 | 7450 | |
94af9270 KS |
7451 | static const char * |
7452 | dwarf2_physname (char *name, struct die_info *die, struct dwarf2_cu *cu) | |
7453 | { | |
bb5ed363 | 7454 | struct objfile *objfile = cu->objfile; |
900e11f9 JK |
7455 | struct attribute *attr; |
7456 | const char *retval, *mangled = NULL, *canon = NULL; | |
7457 | struct cleanup *back_to; | |
7458 | int need_copy = 1; | |
7459 | ||
7460 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
7461 | on its own. */ | |
7462 | if (!die_needs_namespace (die, cu)) | |
7463 | return dwarf2_compute_name (name, die, cu, 1); | |
7464 | ||
7465 | back_to = make_cleanup (null_cleanup, NULL); | |
7466 | ||
7467 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
7468 | if (!attr) | |
7469 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
7470 | ||
7471 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB | |
7472 | has computed. */ | |
7473 | if (attr && DW_STRING (attr)) | |
7474 | { | |
7475 | char *demangled; | |
7476 | ||
7477 | mangled = DW_STRING (attr); | |
7478 | ||
7479 | /* Use DMGL_RET_DROP for C++ template functions to suppress their return | |
7480 | type. It is easier for GDB users to search for such functions as | |
7481 | `name(params)' than `long name(params)'. In such case the minimal | |
7482 | symbol names do not match the full symbol names but for template | |
7483 | functions there is never a need to look up their definition from their | |
7484 | declaration so the only disadvantage remains the minimal symbol | |
7485 | variant `long name(params)' does not have the proper inferior type. | |
7486 | */ | |
7487 | ||
a766d390 DE |
7488 | if (cu->language == language_go) |
7489 | { | |
7490 | /* This is a lie, but we already lie to the caller new_symbol_full. | |
7491 | new_symbol_full assumes we return the mangled name. | |
7492 | This just undoes that lie until things are cleaned up. */ | |
7493 | demangled = NULL; | |
7494 | } | |
7495 | else | |
7496 | { | |
7497 | demangled = cplus_demangle (mangled, | |
7498 | (DMGL_PARAMS | DMGL_ANSI | |
7499 | | (cu->language == language_java | |
7500 | ? DMGL_JAVA | DMGL_RET_POSTFIX | |
7501 | : DMGL_RET_DROP))); | |
7502 | } | |
900e11f9 JK |
7503 | if (demangled) |
7504 | { | |
7505 | make_cleanup (xfree, demangled); | |
7506 | canon = demangled; | |
7507 | } | |
7508 | else | |
7509 | { | |
7510 | canon = mangled; | |
7511 | need_copy = 0; | |
7512 | } | |
7513 | } | |
7514 | ||
7515 | if (canon == NULL || check_physname) | |
7516 | { | |
7517 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
7518 | ||
7519 | if (canon != NULL && strcmp (physname, canon) != 0) | |
7520 | { | |
7521 | /* It may not mean a bug in GDB. The compiler could also | |
7522 | compute DW_AT_linkage_name incorrectly. But in such case | |
7523 | GDB would need to be bug-to-bug compatible. */ | |
7524 | ||
7525 | complaint (&symfile_complaints, | |
7526 | _("Computed physname <%s> does not match demangled <%s> " | |
7527 | "(from linkage <%s>) - DIE at 0x%x [in module %s]"), | |
b64f50a1 | 7528 | physname, canon, mangled, die->offset.sect_off, objfile->name); |
900e11f9 JK |
7529 | |
7530 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
7531 | is available here - over computed PHYSNAME. It is safer | |
7532 | against both buggy GDB and buggy compilers. */ | |
7533 | ||
7534 | retval = canon; | |
7535 | } | |
7536 | else | |
7537 | { | |
7538 | retval = physname; | |
7539 | need_copy = 0; | |
7540 | } | |
7541 | } | |
7542 | else | |
7543 | retval = canon; | |
7544 | ||
7545 | if (need_copy) | |
7546 | retval = obsavestring (retval, strlen (retval), | |
bb5ed363 | 7547 | &objfile->objfile_obstack); |
900e11f9 JK |
7548 | |
7549 | do_cleanups (back_to); | |
7550 | return retval; | |
0114d602 DJ |
7551 | } |
7552 | ||
27aa8d6a SW |
7553 | /* Read the import statement specified by the given die and record it. */ |
7554 | ||
7555 | static void | |
7556 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
7557 | { | |
bb5ed363 | 7558 | struct objfile *objfile = cu->objfile; |
27aa8d6a | 7559 | struct attribute *import_attr; |
32019081 | 7560 | struct die_info *imported_die, *child_die; |
de4affc9 | 7561 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 7562 | const char *imported_name; |
794684b6 | 7563 | const char *imported_name_prefix; |
13387711 SW |
7564 | const char *canonical_name; |
7565 | const char *import_alias; | |
7566 | const char *imported_declaration = NULL; | |
794684b6 | 7567 | const char *import_prefix; |
32019081 JK |
7568 | VEC (const_char_ptr) *excludes = NULL; |
7569 | struct cleanup *cleanups; | |
13387711 SW |
7570 | |
7571 | char *temp; | |
27aa8d6a SW |
7572 | |
7573 | import_attr = dwarf2_attr (die, DW_AT_import, cu); | |
7574 | if (import_attr == NULL) | |
7575 | { | |
7576 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
7577 | dwarf_tag_name (die->tag)); | |
7578 | return; | |
7579 | } | |
7580 | ||
de4affc9 CC |
7581 | imported_cu = cu; |
7582 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
7583 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
7584 | if (imported_name == NULL) |
7585 | { | |
7586 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
7587 | ||
7588 | The import in the following code: | |
7589 | namespace A | |
7590 | { | |
7591 | typedef int B; | |
7592 | } | |
7593 | ||
7594 | int main () | |
7595 | { | |
7596 | using A::B; | |
7597 | B b; | |
7598 | return b; | |
7599 | } | |
7600 | ||
7601 | ... | |
7602 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
7603 | <52> DW_AT_decl_file : 1 | |
7604 | <53> DW_AT_decl_line : 6 | |
7605 | <54> DW_AT_import : <0x75> | |
7606 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
7607 | <59> DW_AT_name : B | |
7608 | <5b> DW_AT_decl_file : 1 | |
7609 | <5c> DW_AT_decl_line : 2 | |
7610 | <5d> DW_AT_type : <0x6e> | |
7611 | ... | |
7612 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
7613 | <76> DW_AT_byte_size : 4 | |
7614 | <77> DW_AT_encoding : 5 (signed) | |
7615 | ||
7616 | imports the wrong die ( 0x75 instead of 0x58 ). | |
7617 | This case will be ignored until the gcc bug is fixed. */ | |
7618 | return; | |
7619 | } | |
7620 | ||
82856980 SW |
7621 | /* Figure out the local name after import. */ |
7622 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 7623 | |
794684b6 SW |
7624 | /* Figure out where the statement is being imported to. */ |
7625 | import_prefix = determine_prefix (die, cu); | |
7626 | ||
7627 | /* Figure out what the scope of the imported die is and prepend it | |
7628 | to the name of the imported die. */ | |
de4affc9 | 7629 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 7630 | |
f55ee35c JK |
7631 | if (imported_die->tag != DW_TAG_namespace |
7632 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 7633 | { |
13387711 SW |
7634 | imported_declaration = imported_name; |
7635 | canonical_name = imported_name_prefix; | |
794684b6 | 7636 | } |
13387711 | 7637 | else if (strlen (imported_name_prefix) > 0) |
794684b6 | 7638 | { |
13387711 SW |
7639 | temp = alloca (strlen (imported_name_prefix) |
7640 | + 2 + strlen (imported_name) + 1); | |
7641 | strcpy (temp, imported_name_prefix); | |
7642 | strcat (temp, "::"); | |
7643 | strcat (temp, imported_name); | |
7644 | canonical_name = temp; | |
794684b6 | 7645 | } |
13387711 SW |
7646 | else |
7647 | canonical_name = imported_name; | |
794684b6 | 7648 | |
32019081 JK |
7649 | cleanups = make_cleanup (VEC_cleanup (const_char_ptr), &excludes); |
7650 | ||
7651 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) | |
7652 | for (child_die = die->child; child_die && child_die->tag; | |
7653 | child_die = sibling_die (child_die)) | |
7654 | { | |
7655 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
7656 | represented by an imported module entry with an import attribute | |
7657 | referring to the module and owned entries corresponding to those | |
7658 | entities that are renamed as part of being imported. */ | |
7659 | ||
7660 | if (child_die->tag != DW_TAG_imported_declaration) | |
7661 | { | |
7662 | complaint (&symfile_complaints, | |
7663 | _("child DW_TAG_imported_declaration expected " | |
7664 | "- DIE at 0x%x [in module %s]"), | |
b64f50a1 | 7665 | child_die->offset.sect_off, objfile->name); |
32019081 JK |
7666 | continue; |
7667 | } | |
7668 | ||
7669 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
7670 | if (import_attr == NULL) | |
7671 | { | |
7672 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
7673 | dwarf_tag_name (child_die->tag)); | |
7674 | continue; | |
7675 | } | |
7676 | ||
7677 | imported_cu = cu; | |
7678 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
7679 | &imported_cu); | |
7680 | imported_name = dwarf2_name (imported_die, imported_cu); | |
7681 | if (imported_name == NULL) | |
7682 | { | |
7683 | complaint (&symfile_complaints, | |
7684 | _("child DW_TAG_imported_declaration has unknown " | |
7685 | "imported name - DIE at 0x%x [in module %s]"), | |
b64f50a1 | 7686 | child_die->offset.sect_off, objfile->name); |
32019081 JK |
7687 | continue; |
7688 | } | |
7689 | ||
7690 | VEC_safe_push (const_char_ptr, excludes, imported_name); | |
7691 | ||
7692 | process_die (child_die, cu); | |
7693 | } | |
7694 | ||
c0cc3a76 SW |
7695 | cp_add_using_directive (import_prefix, |
7696 | canonical_name, | |
7697 | import_alias, | |
13387711 | 7698 | imported_declaration, |
32019081 | 7699 | excludes, |
bb5ed363 | 7700 | &objfile->objfile_obstack); |
32019081 JK |
7701 | |
7702 | do_cleanups (cleanups); | |
27aa8d6a SW |
7703 | } |
7704 | ||
f4dc4d17 | 7705 | /* Cleanup function for handle_DW_AT_stmt_list. */ |
ae2de4f8 | 7706 | |
cb1df416 DJ |
7707 | static void |
7708 | free_cu_line_header (void *arg) | |
7709 | { | |
7710 | struct dwarf2_cu *cu = arg; | |
7711 | ||
7712 | free_line_header (cu->line_header); | |
7713 | cu->line_header = NULL; | |
7714 | } | |
7715 | ||
9291a0cd TT |
7716 | static void |
7717 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu, | |
7718 | char **name, char **comp_dir) | |
7719 | { | |
7720 | struct attribute *attr; | |
7721 | ||
7722 | *name = NULL; | |
7723 | *comp_dir = NULL; | |
7724 | ||
7725 | /* Find the filename. Do not use dwarf2_name here, since the filename | |
7726 | is not a source language identifier. */ | |
7727 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
7728 | if (attr) | |
7729 | { | |
7730 | *name = DW_STRING (attr); | |
7731 | } | |
7732 | ||
7733 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); | |
7734 | if (attr) | |
7735 | *comp_dir = DW_STRING (attr); | |
7736 | else if (*name != NULL && IS_ABSOLUTE_PATH (*name)) | |
7737 | { | |
7738 | *comp_dir = ldirname (*name); | |
7739 | if (*comp_dir != NULL) | |
7740 | make_cleanup (xfree, *comp_dir); | |
7741 | } | |
7742 | if (*comp_dir != NULL) | |
7743 | { | |
7744 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
7745 | directory, get rid of it. */ | |
7746 | char *cp = strchr (*comp_dir, ':'); | |
7747 | ||
7748 | if (cp && cp != *comp_dir && cp[-1] == '.' && cp[1] == '/') | |
7749 | *comp_dir = cp + 1; | |
7750 | } | |
7751 | ||
7752 | if (*name == NULL) | |
7753 | *name = "<unknown>"; | |
7754 | } | |
7755 | ||
f4dc4d17 DE |
7756 | /* Handle DW_AT_stmt_list for a compilation unit. |
7757 | DIE is the DW_TAG_compile_unit die for CU. | |
f3f5162e DE |
7758 | COMP_DIR is the compilation directory. |
7759 | WANT_LINE_INFO is non-zero if the pc/line-number mapping is needed. */ | |
2ab95328 TT |
7760 | |
7761 | static void | |
7762 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
f4dc4d17 | 7763 | const char *comp_dir) |
2ab95328 TT |
7764 | { |
7765 | struct attribute *attr; | |
2ab95328 | 7766 | |
f4dc4d17 DE |
7767 | gdb_assert (! cu->per_cu->is_debug_types); |
7768 | ||
2ab95328 TT |
7769 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
7770 | if (attr) | |
7771 | { | |
7772 | unsigned int line_offset = DW_UNSND (attr); | |
7773 | struct line_header *line_header | |
3019eac3 | 7774 | = dwarf_decode_line_header (line_offset, cu); |
2ab95328 TT |
7775 | |
7776 | if (line_header) | |
dee91e82 DE |
7777 | { |
7778 | cu->line_header = line_header; | |
7779 | make_cleanup (free_cu_line_header, cu); | |
f4dc4d17 | 7780 | dwarf_decode_lines (line_header, comp_dir, cu, NULL, 1); |
dee91e82 | 7781 | } |
2ab95328 TT |
7782 | } |
7783 | } | |
7784 | ||
95554aad | 7785 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 7786 | |
c906108c | 7787 | static void |
e7c27a73 | 7788 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7789 | { |
dee91e82 | 7790 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
debd256d | 7791 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2acceee2 | 7792 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
7793 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
7794 | struct attribute *attr; | |
e1024ff1 | 7795 | char *name = NULL; |
c906108c SS |
7796 | char *comp_dir = NULL; |
7797 | struct die_info *child_die; | |
7798 | bfd *abfd = objfile->obfd; | |
e142c38c | 7799 | CORE_ADDR baseaddr; |
6e70227d | 7800 | |
e142c38c | 7801 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c | 7802 | |
fae299cd | 7803 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
7804 | |
7805 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
7806 | from finish_block. */ | |
2acceee2 | 7807 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c SS |
7808 | lowpc = highpc; |
7809 | lowpc += baseaddr; | |
7810 | highpc += baseaddr; | |
7811 | ||
9291a0cd | 7812 | find_file_and_directory (die, cu, &name, &comp_dir); |
e1024ff1 | 7813 | |
95554aad | 7814 | prepare_one_comp_unit (cu, die, cu->language); |
303b6f5d | 7815 | |
f4b8a18d KW |
7816 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
7817 | standardised yet. As a workaround for the language detection we fall | |
7818 | back to the DW_AT_producer string. */ | |
7819 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
7820 | cu->language = language_opencl; | |
7821 | ||
3019eac3 DE |
7822 | /* Similar hack for Go. */ |
7823 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
7824 | set_cu_language (DW_LANG_Go, cu); | |
7825 | ||
f4dc4d17 | 7826 | dwarf2_start_symtab (cu, name, comp_dir, lowpc); |
3019eac3 DE |
7827 | |
7828 | /* Decode line number information if present. We do this before | |
7829 | processing child DIEs, so that the line header table is available | |
7830 | for DW_AT_decl_file. */ | |
f4dc4d17 | 7831 | handle_DW_AT_stmt_list (die, cu, comp_dir); |
3019eac3 DE |
7832 | |
7833 | /* Process all dies in compilation unit. */ | |
7834 | if (die->child != NULL) | |
7835 | { | |
7836 | child_die = die->child; | |
7837 | while (child_die && child_die->tag) | |
7838 | { | |
7839 | process_die (child_die, cu); | |
7840 | child_die = sibling_die (child_die); | |
7841 | } | |
7842 | } | |
7843 | ||
7844 | /* Decode macro information, if present. Dwarf 2 macro information | |
7845 | refers to information in the line number info statement program | |
7846 | header, so we can only read it if we've read the header | |
7847 | successfully. */ | |
7848 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
7849 | if (attr && cu->line_header) | |
7850 | { | |
7851 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
7852 | complaint (&symfile_complaints, | |
7853 | _("CU refers to both DW_AT_GNU_macros and DW_AT_macro_info")); | |
7854 | ||
09262596 | 7855 | dwarf_decode_macros (cu, DW_UNSND (attr), comp_dir, 1); |
3019eac3 DE |
7856 | } |
7857 | else | |
7858 | { | |
7859 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
7860 | if (attr && cu->line_header) | |
7861 | { | |
7862 | unsigned int macro_offset = DW_UNSND (attr); | |
7863 | ||
09262596 | 7864 | dwarf_decode_macros (cu, macro_offset, comp_dir, 0); |
3019eac3 DE |
7865 | } |
7866 | } | |
7867 | ||
7868 | do_cleanups (back_to); | |
7869 | } | |
7870 | ||
f4dc4d17 DE |
7871 | /* TU version of handle_DW_AT_stmt_list for read_type_unit_scope. |
7872 | Create the set of symtabs used by this TU, or if this TU is sharing | |
7873 | symtabs with another TU and the symtabs have already been created | |
7874 | then restore those symtabs in the line header. | |
7875 | We don't need the pc/line-number mapping for type units. */ | |
3019eac3 DE |
7876 | |
7877 | static void | |
f4dc4d17 | 7878 | setup_type_unit_groups (struct die_info *die, struct dwarf2_cu *cu) |
3019eac3 | 7879 | { |
f4dc4d17 DE |
7880 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
7881 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
7882 | struct type_unit_group *tu_group; | |
7883 | int first_time; | |
7884 | struct line_header *lh; | |
3019eac3 | 7885 | struct attribute *attr; |
f4dc4d17 | 7886 | unsigned int i, line_offset; |
3019eac3 | 7887 | |
f4dc4d17 | 7888 | gdb_assert (per_cu->is_debug_types); |
3019eac3 | 7889 | |
f4dc4d17 | 7890 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
3019eac3 | 7891 | |
f4dc4d17 DE |
7892 | /* If we're using .gdb_index (includes -readnow) then |
7893 | per_cu->s.type_unit_group may not have been set up yet. */ | |
7894 | if (per_cu->s.type_unit_group == NULL) | |
094b34ac | 7895 | per_cu->s.type_unit_group = get_type_unit_group (cu, attr); |
f4dc4d17 DE |
7896 | tu_group = per_cu->s.type_unit_group; |
7897 | ||
7898 | /* If we've already processed this stmt_list there's no real need to | |
7899 | do it again, we could fake it and just recreate the part we need | |
7900 | (file name,index -> symtab mapping). If data shows this optimization | |
7901 | is useful we can do it then. */ | |
7902 | first_time = tu_group->primary_symtab == NULL; | |
7903 | ||
7904 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
7905 | debug info. */ | |
7906 | lh = NULL; | |
7907 | if (attr != NULL) | |
3019eac3 | 7908 | { |
f4dc4d17 DE |
7909 | line_offset = DW_UNSND (attr); |
7910 | lh = dwarf_decode_line_header (line_offset, cu); | |
7911 | } | |
7912 | if (lh == NULL) | |
7913 | { | |
7914 | if (first_time) | |
7915 | dwarf2_start_symtab (cu, "", NULL, 0); | |
7916 | else | |
7917 | { | |
7918 | gdb_assert (tu_group->symtabs == NULL); | |
7919 | restart_symtab (0); | |
7920 | } | |
7921 | /* Note: The primary symtab will get allocated at the end. */ | |
7922 | return; | |
3019eac3 DE |
7923 | } |
7924 | ||
f4dc4d17 DE |
7925 | cu->line_header = lh; |
7926 | make_cleanup (free_cu_line_header, cu); | |
3019eac3 | 7927 | |
f4dc4d17 DE |
7928 | if (first_time) |
7929 | { | |
7930 | dwarf2_start_symtab (cu, "", NULL, 0); | |
3019eac3 | 7931 | |
f4dc4d17 DE |
7932 | tu_group->num_symtabs = lh->num_file_names; |
7933 | tu_group->symtabs = XNEWVEC (struct symtab *, lh->num_file_names); | |
3019eac3 | 7934 | |
f4dc4d17 DE |
7935 | for (i = 0; i < lh->num_file_names; ++i) |
7936 | { | |
7937 | char *dir = NULL; | |
7938 | struct file_entry *fe = &lh->file_names[i]; | |
3019eac3 | 7939 | |
f4dc4d17 DE |
7940 | if (fe->dir_index) |
7941 | dir = lh->include_dirs[fe->dir_index - 1]; | |
7942 | dwarf2_start_subfile (fe->name, dir, NULL); | |
3019eac3 | 7943 | |
f4dc4d17 DE |
7944 | /* Note: We don't have to watch for the main subfile here, type units |
7945 | don't have DW_AT_name. */ | |
3019eac3 | 7946 | |
f4dc4d17 DE |
7947 | if (current_subfile->symtab == NULL) |
7948 | { | |
7949 | /* NOTE: start_subfile will recognize when it's been passed | |
7950 | a file it has already seen. So we can't assume there's a | |
7951 | simple mapping from lh->file_names to subfiles, | |
7952 | lh->file_names may contain dups. */ | |
7953 | current_subfile->symtab = allocate_symtab (current_subfile->name, | |
7954 | objfile); | |
7955 | } | |
7956 | ||
7957 | fe->symtab = current_subfile->symtab; | |
7958 | tu_group->symtabs[i] = fe->symtab; | |
7959 | } | |
7960 | } | |
7961 | else | |
3019eac3 | 7962 | { |
f4dc4d17 DE |
7963 | restart_symtab (0); |
7964 | ||
7965 | for (i = 0; i < lh->num_file_names; ++i) | |
7966 | { | |
7967 | struct file_entry *fe = &lh->file_names[i]; | |
7968 | ||
7969 | fe->symtab = tu_group->symtabs[i]; | |
7970 | } | |
3019eac3 DE |
7971 | } |
7972 | ||
f4dc4d17 DE |
7973 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
7974 | so they don't have a "real" (so to speak) symtab anyway. | |
7975 | There is later code that will assign the main symtab to all symbols | |
7976 | that don't have one. We need to handle the case of a symbol with a | |
7977 | missing symtab (DW_AT_decl_file) anyway. */ | |
7978 | } | |
3019eac3 | 7979 | |
f4dc4d17 DE |
7980 | /* Process DW_TAG_type_unit. |
7981 | For TUs we want to skip the first top level sibling if it's not the | |
7982 | actual type being defined by this TU. In this case the first top | |
7983 | level sibling is there to provide context only. */ | |
3019eac3 | 7984 | |
f4dc4d17 DE |
7985 | static void |
7986 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
7987 | { | |
7988 | struct die_info *child_die; | |
3019eac3 | 7989 | |
f4dc4d17 DE |
7990 | prepare_one_comp_unit (cu, die, language_minimal); |
7991 | ||
7992 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
7993 | We do this before processing child DIEs, so that the line header table | |
7994 | is available for DW_AT_decl_file. */ | |
7995 | setup_type_unit_groups (die, cu); | |
7996 | ||
7997 | if (die->child != NULL) | |
7998 | { | |
7999 | child_die = die->child; | |
8000 | while (child_die && child_die->tag) | |
8001 | { | |
8002 | process_die (child_die, cu); | |
8003 | child_die = sibling_die (child_die); | |
8004 | } | |
8005 | } | |
3019eac3 DE |
8006 | } |
8007 | \f | |
8008 | /* DWO files. */ | |
8009 | ||
8010 | static hashval_t | |
8011 | hash_dwo_file (const void *item) | |
8012 | { | |
8013 | const struct dwo_file *dwo_file = item; | |
8014 | ||
8015 | return htab_hash_string (dwo_file->dwo_name); | |
8016 | } | |
8017 | ||
8018 | static int | |
8019 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
8020 | { | |
8021 | const struct dwo_file *lhs = item_lhs; | |
8022 | const struct dwo_file *rhs = item_rhs; | |
8023 | ||
8024 | return strcmp (lhs->dwo_name, rhs->dwo_name) == 0; | |
8025 | } | |
8026 | ||
8027 | /* Allocate a hash table for DWO files. */ | |
8028 | ||
8029 | static htab_t | |
8030 | allocate_dwo_file_hash_table (void) | |
8031 | { | |
8032 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8033 | ||
8034 | return htab_create_alloc_ex (41, | |
8035 | hash_dwo_file, | |
8036 | eq_dwo_file, | |
8037 | NULL, | |
8038 | &objfile->objfile_obstack, | |
8039 | hashtab_obstack_allocate, | |
8040 | dummy_obstack_deallocate); | |
8041 | } | |
8042 | ||
8043 | static hashval_t | |
8044 | hash_dwo_unit (const void *item) | |
8045 | { | |
8046 | const struct dwo_unit *dwo_unit = item; | |
8047 | ||
8048 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
8049 | return dwo_unit->signature; | |
8050 | } | |
8051 | ||
8052 | static int | |
8053 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
8054 | { | |
8055 | const struct dwo_unit *lhs = item_lhs; | |
8056 | const struct dwo_unit *rhs = item_rhs; | |
8057 | ||
8058 | /* The signature is assumed to be unique within the DWO file. | |
8059 | So while object file CU dwo_id's always have the value zero, | |
8060 | that's OK, assuming each object file DWO file has only one CU, | |
8061 | and that's the rule for now. */ | |
8062 | return lhs->signature == rhs->signature; | |
8063 | } | |
8064 | ||
8065 | /* Allocate a hash table for DWO CUs,TUs. | |
8066 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
8067 | ||
8068 | static htab_t | |
8069 | allocate_dwo_unit_table (struct objfile *objfile) | |
8070 | { | |
8071 | /* Start out with a pretty small number. | |
8072 | Generally DWO files contain only one CU and maybe some TUs. */ | |
8073 | return htab_create_alloc_ex (3, | |
8074 | hash_dwo_unit, | |
8075 | eq_dwo_unit, | |
8076 | NULL, | |
8077 | &objfile->objfile_obstack, | |
8078 | hashtab_obstack_allocate, | |
8079 | dummy_obstack_deallocate); | |
8080 | } | |
8081 | ||
8082 | /* This function is mapped across the sections and remembers the offset and | |
8083 | size of each of the DWO debugging sections we are interested in. */ | |
8084 | ||
8085 | static void | |
8086 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, void *dwo_file_ptr) | |
8087 | { | |
8088 | struct dwo_file *dwo_file = dwo_file_ptr; | |
8089 | const struct dwo_section_names *names = &dwo_section_names; | |
8090 | ||
8091 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
8092 | { | |
8093 | dwo_file->sections.abbrev.asection = sectp; | |
8094 | dwo_file->sections.abbrev.size = bfd_get_section_size (sectp); | |
8095 | } | |
8096 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
8097 | { | |
8098 | dwo_file->sections.info.asection = sectp; | |
8099 | dwo_file->sections.info.size = bfd_get_section_size (sectp); | |
8100 | } | |
8101 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
8102 | { | |
8103 | dwo_file->sections.line.asection = sectp; | |
8104 | dwo_file->sections.line.size = bfd_get_section_size (sectp); | |
8105 | } | |
8106 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
8107 | { | |
8108 | dwo_file->sections.loc.asection = sectp; | |
8109 | dwo_file->sections.loc.size = bfd_get_section_size (sectp); | |
8110 | } | |
09262596 DE |
8111 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) |
8112 | { | |
8113 | dwo_file->sections.macinfo.asection = sectp; | |
8114 | dwo_file->sections.macinfo.size = bfd_get_section_size (sectp); | |
8115 | } | |
8116 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
8117 | { | |
8118 | dwo_file->sections.macro.asection = sectp; | |
8119 | dwo_file->sections.macro.size = bfd_get_section_size (sectp); | |
8120 | } | |
3019eac3 DE |
8121 | else if (section_is_p (sectp->name, &names->str_dwo)) |
8122 | { | |
8123 | dwo_file->sections.str.asection = sectp; | |
8124 | dwo_file->sections.str.size = bfd_get_section_size (sectp); | |
8125 | } | |
8126 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
8127 | { | |
8128 | dwo_file->sections.str_offsets.asection = sectp; | |
8129 | dwo_file->sections.str_offsets.size = bfd_get_section_size (sectp); | |
8130 | } | |
8131 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
8132 | { | |
8133 | struct dwarf2_section_info type_section; | |
8134 | ||
8135 | memset (&type_section, 0, sizeof (type_section)); | |
8136 | type_section.asection = sectp; | |
8137 | type_section.size = bfd_get_section_size (sectp); | |
8138 | VEC_safe_push (dwarf2_section_info_def, dwo_file->sections.types, | |
8139 | &type_section); | |
8140 | } | |
8141 | } | |
8142 | ||
8143 | /* Structure used to pass data to create_debug_info_hash_table_reader. */ | |
8144 | ||
8145 | struct create_dwo_info_table_data | |
8146 | { | |
8147 | struct dwo_file *dwo_file; | |
8148 | htab_t cu_htab; | |
8149 | }; | |
8150 | ||
8151 | /* die_reader_func for create_debug_info_hash_table. */ | |
8152 | ||
8153 | static void | |
8154 | create_debug_info_hash_table_reader (const struct die_reader_specs *reader, | |
8155 | gdb_byte *info_ptr, | |
8156 | struct die_info *comp_unit_die, | |
8157 | int has_children, | |
8158 | void *datap) | |
8159 | { | |
8160 | struct dwarf2_cu *cu = reader->cu; | |
8161 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8162 | sect_offset offset = cu->per_cu->offset; | |
8163 | struct dwarf2_section_info *section = cu->per_cu->info_or_types_section; | |
8164 | struct create_dwo_info_table_data *data = datap; | |
8165 | struct dwo_file *dwo_file = data->dwo_file; | |
8166 | htab_t cu_htab = data->cu_htab; | |
8167 | void **slot; | |
8168 | struct attribute *attr; | |
8169 | struct dwo_unit *dwo_unit; | |
8170 | ||
8171 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
8172 | if (attr == NULL) | |
8173 | { | |
8174 | error (_("Dwarf Error: debug entry at offset 0x%x is missing" | |
8175 | " its dwo_id [in module %s]"), | |
8176 | offset.sect_off, dwo_file->dwo_name); | |
8177 | return; | |
8178 | } | |
8179 | ||
8180 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
8181 | dwo_unit->dwo_file = dwo_file; | |
8182 | dwo_unit->signature = DW_UNSND (attr); | |
8183 | dwo_unit->info_or_types_section = section; | |
8184 | dwo_unit->offset = offset; | |
8185 | dwo_unit->length = cu->per_cu->length; | |
8186 | ||
8187 | slot = htab_find_slot (cu_htab, dwo_unit, INSERT); | |
8188 | gdb_assert (slot != NULL); | |
8189 | if (*slot != NULL) | |
8190 | { | |
8191 | const struct dwo_unit *dup_dwo_unit = *slot; | |
8192 | ||
8193 | complaint (&symfile_complaints, | |
8194 | _("debug entry at offset 0x%x is duplicate to the entry at" | |
8195 | " offset 0x%x, dwo_id 0x%s [in module %s]"), | |
8196 | offset.sect_off, dup_dwo_unit->offset.sect_off, | |
8197 | phex (dwo_unit->signature, sizeof (dwo_unit->signature)), | |
8198 | dwo_file->dwo_name); | |
8199 | } | |
8200 | else | |
8201 | *slot = dwo_unit; | |
8202 | ||
09406207 | 8203 | if (dwarf2_read_debug) |
3019eac3 DE |
8204 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, dwo_id 0x%s\n", |
8205 | offset.sect_off, | |
8206 | phex (dwo_unit->signature, | |
8207 | sizeof (dwo_unit->signature))); | |
8208 | } | |
8209 | ||
8210 | /* Create a hash table to map DWO IDs to their CU entry in .debug_info.dwo. */ | |
8211 | ||
8212 | static htab_t | |
8213 | create_debug_info_hash_table (struct dwo_file *dwo_file) | |
8214 | { | |
8215 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8216 | struct dwarf2_section_info *section = &dwo_file->sections.info; | |
8217 | bfd *abfd; | |
8218 | htab_t cu_htab; | |
8219 | gdb_byte *info_ptr, *end_ptr; | |
8220 | struct create_dwo_info_table_data create_dwo_info_table_data; | |
8221 | ||
8222 | dwarf2_read_section (objfile, section); | |
8223 | info_ptr = section->buffer; | |
8224 | ||
8225 | if (info_ptr == NULL) | |
8226 | return NULL; | |
8227 | ||
8228 | /* We can't set abfd until now because the section may be empty or | |
8229 | not present, in which case section->asection will be NULL. */ | |
8230 | abfd = section->asection->owner; | |
8231 | ||
09406207 | 8232 | if (dwarf2_read_debug) |
3019eac3 DE |
8233 | fprintf_unfiltered (gdb_stdlog, "Reading .debug_info.dwo for %s:\n", |
8234 | bfd_get_filename (abfd)); | |
8235 | ||
8236 | cu_htab = allocate_dwo_unit_table (objfile); | |
8237 | ||
8238 | create_dwo_info_table_data.dwo_file = dwo_file; | |
8239 | create_dwo_info_table_data.cu_htab = cu_htab; | |
8240 | ||
8241 | end_ptr = info_ptr + section->size; | |
8242 | while (info_ptr < end_ptr) | |
8243 | { | |
8244 | struct dwarf2_per_cu_data per_cu; | |
8245 | ||
8246 | memset (&per_cu, 0, sizeof (per_cu)); | |
8247 | per_cu.objfile = objfile; | |
8248 | per_cu.is_debug_types = 0; | |
8249 | per_cu.offset.sect_off = info_ptr - section->buffer; | |
8250 | per_cu.info_or_types_section = section; | |
8251 | ||
8252 | init_cutu_and_read_dies_no_follow (&per_cu, | |
8253 | &dwo_file->sections.abbrev, | |
8254 | dwo_file, | |
8255 | create_debug_info_hash_table_reader, | |
8256 | &create_dwo_info_table_data); | |
8257 | ||
8258 | info_ptr += per_cu.length; | |
8259 | } | |
8260 | ||
8261 | return cu_htab; | |
8262 | } | |
8263 | ||
8264 | /* Subroutine of open_dwo_file to simplify it. | |
8265 | Open the file specified by FILE_NAME and hand it off to BFD for | |
8266 | preliminary analysis. Return a newly initialized bfd *, which | |
8267 | includes a canonicalized copy of FILE_NAME. | |
8268 | In case of trouble, return NULL. | |
8269 | NOTE: This function is derived from symfile_bfd_open. */ | |
8270 | ||
8271 | static bfd * | |
8272 | try_open_dwo_file (const char *file_name) | |
8273 | { | |
8274 | bfd *sym_bfd; | |
8275 | int desc; | |
8276 | char *absolute_name; | |
3019eac3 DE |
8277 | |
8278 | desc = openp (debug_file_directory, OPF_TRY_CWD_FIRST, file_name, | |
8279 | O_RDONLY | O_BINARY, &absolute_name); | |
8280 | if (desc < 0) | |
8281 | return NULL; | |
8282 | ||
bb397797 | 8283 | sym_bfd = gdb_bfd_open (absolute_name, gnutarget, desc); |
3019eac3 DE |
8284 | if (!sym_bfd) |
8285 | { | |
3019eac3 DE |
8286 | xfree (absolute_name); |
8287 | return NULL; | |
8288 | } | |
a4453b7e | 8289 | xfree (absolute_name); |
3019eac3 DE |
8290 | bfd_set_cacheable (sym_bfd, 1); |
8291 | ||
8292 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
8293 | { | |
cbb099e8 | 8294 | gdb_bfd_unref (sym_bfd); /* This also closes desc. */ |
3019eac3 DE |
8295 | return NULL; |
8296 | } | |
8297 | ||
3019eac3 DE |
8298 | return sym_bfd; |
8299 | } | |
8300 | ||
8301 | /* Try to open DWO file DWO_NAME. | |
8302 | COMP_DIR is the DW_AT_comp_dir attribute. | |
8303 | The result is the bfd handle of the file. | |
8304 | If there is a problem finding or opening the file, return NULL. | |
8305 | Upon success, the canonicalized path of the file is stored in the bfd, | |
8306 | same as symfile_bfd_open. */ | |
8307 | ||
8308 | static bfd * | |
8309 | open_dwo_file (const char *dwo_name, const char *comp_dir) | |
8310 | { | |
8311 | bfd *abfd; | |
3019eac3 DE |
8312 | |
8313 | if (IS_ABSOLUTE_PATH (dwo_name)) | |
8314 | return try_open_dwo_file (dwo_name); | |
8315 | ||
8316 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
8317 | ||
8318 | if (comp_dir != NULL) | |
8319 | { | |
8320 | char *path_to_try = concat (comp_dir, SLASH_STRING, dwo_name, NULL); | |
8321 | ||
8322 | /* NOTE: If comp_dir is a relative path, this will also try the | |
8323 | search path, which seems useful. */ | |
8324 | abfd = try_open_dwo_file (path_to_try); | |
8325 | xfree (path_to_try); | |
8326 | if (abfd != NULL) | |
8327 | return abfd; | |
8328 | } | |
8329 | ||
8330 | /* That didn't work, try debug-file-directory, which, despite its name, | |
8331 | is a list of paths. */ | |
8332 | ||
8333 | if (*debug_file_directory == '\0') | |
8334 | return NULL; | |
8335 | ||
8336 | return try_open_dwo_file (dwo_name); | |
8337 | } | |
8338 | ||
8339 | /* Initialize the use of the DWO file specified by DWO_NAME. */ | |
8340 | ||
8341 | static struct dwo_file * | |
8342 | init_dwo_file (const char *dwo_name, const char *comp_dir) | |
8343 | { | |
8344 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8345 | struct dwo_file *dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
8346 | struct dwo_file); | |
8347 | bfd *abfd; | |
8348 | struct cleanup *cleanups; | |
8349 | ||
09406207 | 8350 | if (dwarf2_read_debug) |
3019eac3 DE |
8351 | fprintf_unfiltered (gdb_stdlog, "Reading DWO file %s:\n", dwo_name); |
8352 | ||
8353 | abfd = open_dwo_file (dwo_name, comp_dir); | |
8354 | if (abfd == NULL) | |
8355 | return NULL; | |
8356 | dwo_file->dwo_name = dwo_name; | |
8357 | dwo_file->dwo_bfd = abfd; | |
8358 | ||
8359 | cleanups = make_cleanup (free_dwo_file_cleanup, dwo_file); | |
8360 | ||
8361 | bfd_map_over_sections (abfd, dwarf2_locate_dwo_sections, dwo_file); | |
8362 | ||
8363 | dwo_file->cus = create_debug_info_hash_table (dwo_file); | |
8364 | ||
8365 | dwo_file->tus = create_debug_types_hash_table (dwo_file, | |
8366 | dwo_file->sections.types); | |
8367 | ||
8368 | discard_cleanups (cleanups); | |
8369 | ||
8370 | return dwo_file; | |
8371 | } | |
8372 | ||
8373 | /* Lookup DWO file DWO_NAME. */ | |
8374 | ||
8375 | static struct dwo_file * | |
8376 | lookup_dwo_file (char *dwo_name, const char *comp_dir) | |
8377 | { | |
8378 | struct dwo_file *dwo_file; | |
8379 | struct dwo_file find_entry; | |
8380 | void **slot; | |
8381 | ||
8382 | if (dwarf2_per_objfile->dwo_files == NULL) | |
8383 | dwarf2_per_objfile->dwo_files = allocate_dwo_file_hash_table (); | |
8384 | ||
8385 | /* Have we already seen this DWO file? */ | |
8386 | find_entry.dwo_name = dwo_name; | |
8387 | slot = htab_find_slot (dwarf2_per_objfile->dwo_files, &find_entry, INSERT); | |
8388 | ||
8389 | /* If not, read it in and build a table of the DWOs it contains. */ | |
8390 | if (*slot == NULL) | |
8391 | *slot = init_dwo_file (dwo_name, comp_dir); | |
8392 | ||
8393 | /* NOTE: This will be NULL if unable to open the file. */ | |
8394 | dwo_file = *slot; | |
8395 | ||
8396 | return dwo_file; | |
8397 | } | |
8398 | ||
8399 | /* Lookup the DWO CU referenced from THIS_CU in DWO file DWO_NAME. | |
8400 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. | |
8401 | SIGNATURE is the "dwo_id" of the CU (for consistency we use the same | |
8402 | nomenclature as TUs). | |
1c658ad5 | 8403 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
3019eac3 DE |
8404 | (dwo_id mismatch or couldn't find the DWO file). */ |
8405 | ||
8406 | static struct dwo_unit * | |
8407 | lookup_dwo_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
8408 | char *dwo_name, const char *comp_dir, | |
8409 | ULONGEST signature) | |
8410 | { | |
8411 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8412 | struct dwo_file *dwo_file; | |
8413 | ||
8414 | dwo_file = lookup_dwo_file (dwo_name, comp_dir); | |
8415 | if (dwo_file == NULL) | |
8416 | return NULL; | |
8417 | ||
8418 | /* Look up the DWO using its signature(dwo_id). */ | |
8419 | ||
8420 | if (dwo_file->cus != NULL) | |
8421 | { | |
8422 | struct dwo_unit find_dwo_cu, *dwo_cu; | |
8423 | ||
8424 | find_dwo_cu.signature = signature; | |
8425 | dwo_cu = htab_find (dwo_file->cus, &find_dwo_cu); | |
a766d390 | 8426 | |
3019eac3 DE |
8427 | if (dwo_cu != NULL) |
8428 | return dwo_cu; | |
8429 | } | |
c906108c | 8430 | |
3019eac3 | 8431 | /* We didn't find it. This must mean a dwo_id mismatch. */ |
df8a16a1 | 8432 | |
3019eac3 DE |
8433 | complaint (&symfile_complaints, |
8434 | _("Could not find DWO CU referenced by CU at offset 0x%x" | |
8435 | " [in module %s]"), | |
8436 | this_cu->offset.sect_off, objfile->name); | |
8437 | return NULL; | |
8438 | } | |
c906108c | 8439 | |
3019eac3 DE |
8440 | /* Lookup the DWO TU referenced from THIS_TU in DWO file DWO_NAME. |
8441 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. | |
1c658ad5 | 8442 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
3019eac3 | 8443 | (dwo_id mismatch or couldn't find the DWO file). */ |
debd256d | 8444 | |
3019eac3 DE |
8445 | static struct dwo_unit * |
8446 | lookup_dwo_type_unit (struct signatured_type *this_tu, | |
8447 | char *dwo_name, const char *comp_dir) | |
8448 | { | |
8449 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8450 | struct dwo_file *dwo_file; | |
cb1df416 | 8451 | |
3019eac3 DE |
8452 | dwo_file = lookup_dwo_file (dwo_name, comp_dir); |
8453 | if (dwo_file == NULL) | |
8454 | return NULL; | |
cf2c3c16 | 8455 | |
3019eac3 DE |
8456 | /* Look up the DWO using its signature(dwo_id). */ |
8457 | ||
8458 | if (dwo_file->tus != NULL) | |
cf2c3c16 | 8459 | { |
3019eac3 | 8460 | struct dwo_unit find_dwo_tu, *dwo_tu; |
9a619af0 | 8461 | |
3019eac3 DE |
8462 | find_dwo_tu.signature = this_tu->signature; |
8463 | dwo_tu = htab_find (dwo_file->tus, &find_dwo_tu); | |
8464 | ||
8465 | if (dwo_tu != NULL) | |
8466 | return dwo_tu; | |
2e276125 | 8467 | } |
9cdd5dbd | 8468 | |
3019eac3 DE |
8469 | /* We didn't find it. This must mean a dwo_id mismatch. */ |
8470 | ||
8471 | complaint (&symfile_complaints, | |
8472 | _("Could not find DWO TU referenced by TU at offset 0x%x" | |
8473 | " [in module %s]"), | |
8474 | this_tu->per_cu.offset.sect_off, objfile->name); | |
8475 | return NULL; | |
5fb290d7 DJ |
8476 | } |
8477 | ||
3019eac3 DE |
8478 | /* Free all resources associated with DWO_FILE. |
8479 | Close the DWO file and munmap the sections. | |
8480 | All memory should be on the objfile obstack. */ | |
348e048f DE |
8481 | |
8482 | static void | |
3019eac3 | 8483 | free_dwo_file (struct dwo_file *dwo_file, struct objfile *objfile) |
348e048f | 8484 | { |
3019eac3 DE |
8485 | int ix; |
8486 | struct dwarf2_section_info *section; | |
348e048f | 8487 | |
3019eac3 | 8488 | gdb_assert (dwo_file->dwo_bfd != objfile->obfd); |
cbb099e8 | 8489 | gdb_bfd_unref (dwo_file->dwo_bfd); |
348e048f | 8490 | |
3019eac3 DE |
8491 | VEC_free (dwarf2_section_info_def, dwo_file->sections.types); |
8492 | } | |
348e048f | 8493 | |
3019eac3 | 8494 | /* Wrapper for free_dwo_file for use in cleanups. */ |
348e048f | 8495 | |
3019eac3 DE |
8496 | static void |
8497 | free_dwo_file_cleanup (void *arg) | |
8498 | { | |
8499 | struct dwo_file *dwo_file = (struct dwo_file *) arg; | |
8500 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
348e048f | 8501 | |
3019eac3 DE |
8502 | free_dwo_file (dwo_file, objfile); |
8503 | } | |
348e048f | 8504 | |
3019eac3 | 8505 | /* Traversal function for free_dwo_files. */ |
2ab95328 | 8506 | |
3019eac3 DE |
8507 | static int |
8508 | free_dwo_file_from_slot (void **slot, void *info) | |
8509 | { | |
8510 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
8511 | struct objfile *objfile = (struct objfile *) info; | |
348e048f | 8512 | |
3019eac3 | 8513 | free_dwo_file (dwo_file, objfile); |
348e048f | 8514 | |
3019eac3 DE |
8515 | return 1; |
8516 | } | |
348e048f | 8517 | |
3019eac3 | 8518 | /* Free all resources associated with DWO_FILES. */ |
348e048f | 8519 | |
3019eac3 DE |
8520 | static void |
8521 | free_dwo_files (htab_t dwo_files, struct objfile *objfile) | |
8522 | { | |
8523 | htab_traverse_noresize (dwo_files, free_dwo_file_from_slot, objfile); | |
348e048f | 8524 | } |
3019eac3 DE |
8525 | \f |
8526 | /* Read in various DIEs. */ | |
348e048f | 8527 | |
d389af10 JK |
8528 | /* qsort helper for inherit_abstract_dies. */ |
8529 | ||
8530 | static int | |
8531 | unsigned_int_compar (const void *ap, const void *bp) | |
8532 | { | |
8533 | unsigned int a = *(unsigned int *) ap; | |
8534 | unsigned int b = *(unsigned int *) bp; | |
8535 | ||
8536 | return (a > b) - (b > a); | |
8537 | } | |
8538 | ||
8539 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). | |
3e43a32a MS |
8540 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
8541 | already referenced by DW_AT_abstract_origin from the children of the | |
8542 | current DIE. */ | |
d389af10 JK |
8543 | |
8544 | static void | |
8545 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
8546 | { | |
8547 | struct die_info *child_die; | |
8548 | unsigned die_children_count; | |
8549 | /* CU offsets which were referenced by children of the current DIE. */ | |
b64f50a1 JK |
8550 | sect_offset *offsets; |
8551 | sect_offset *offsets_end, *offsetp; | |
d389af10 JK |
8552 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
8553 | struct die_info *origin_die; | |
8554 | /* Iterator of the ORIGIN_DIE children. */ | |
8555 | struct die_info *origin_child_die; | |
8556 | struct cleanup *cleanups; | |
8557 | struct attribute *attr; | |
cd02d79d PA |
8558 | struct dwarf2_cu *origin_cu; |
8559 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
8560 | |
8561 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
8562 | if (!attr) | |
8563 | return; | |
8564 | ||
cd02d79d PA |
8565 | /* Note that following die references may follow to a die in a |
8566 | different cu. */ | |
8567 | ||
8568 | origin_cu = cu; | |
8569 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
8570 | ||
8571 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
8572 | symbols in. */ | |
8573 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
8574 | origin_cu->list_in_scope = cu->list_in_scope; | |
8575 | ||
edb3359d DJ |
8576 | if (die->tag != origin_die->tag |
8577 | && !(die->tag == DW_TAG_inlined_subroutine | |
8578 | && origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
8579 | complaint (&symfile_complaints, |
8580 | _("DIE 0x%x and its abstract origin 0x%x have different tags"), | |
b64f50a1 | 8581 | die->offset.sect_off, origin_die->offset.sect_off); |
d389af10 JK |
8582 | |
8583 | child_die = die->child; | |
8584 | die_children_count = 0; | |
8585 | while (child_die && child_die->tag) | |
8586 | { | |
8587 | child_die = sibling_die (child_die); | |
8588 | die_children_count++; | |
8589 | } | |
8590 | offsets = xmalloc (sizeof (*offsets) * die_children_count); | |
8591 | cleanups = make_cleanup (xfree, offsets); | |
8592 | ||
8593 | offsets_end = offsets; | |
8594 | child_die = die->child; | |
8595 | while (child_die && child_die->tag) | |
8596 | { | |
c38f313d DJ |
8597 | /* For each CHILD_DIE, find the corresponding child of |
8598 | ORIGIN_DIE. If there is more than one layer of | |
8599 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
8600 | but GCC versions at least through 4.4 generate this (GCC PR | |
8601 | 40573). */ | |
8602 | struct die_info *child_origin_die = child_die; | |
cd02d79d | 8603 | struct dwarf2_cu *child_origin_cu = cu; |
9a619af0 | 8604 | |
c38f313d DJ |
8605 | while (1) |
8606 | { | |
cd02d79d PA |
8607 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
8608 | child_origin_cu); | |
c38f313d DJ |
8609 | if (attr == NULL) |
8610 | break; | |
cd02d79d PA |
8611 | child_origin_die = follow_die_ref (child_origin_die, attr, |
8612 | &child_origin_cu); | |
c38f313d DJ |
8613 | } |
8614 | ||
d389af10 JK |
8615 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
8616 | counterpart may exist. */ | |
c38f313d | 8617 | if (child_origin_die != child_die) |
d389af10 | 8618 | { |
edb3359d DJ |
8619 | if (child_die->tag != child_origin_die->tag |
8620 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
8621 | && child_origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
8622 | complaint (&symfile_complaints, |
8623 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
b64f50a1 JK |
8624 | "different tags"), child_die->offset.sect_off, |
8625 | child_origin_die->offset.sect_off); | |
c38f313d DJ |
8626 | if (child_origin_die->parent != origin_die) |
8627 | complaint (&symfile_complaints, | |
8628 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
b64f50a1 JK |
8629 | "different parents"), child_die->offset.sect_off, |
8630 | child_origin_die->offset.sect_off); | |
c38f313d DJ |
8631 | else |
8632 | *offsets_end++ = child_origin_die->offset; | |
d389af10 JK |
8633 | } |
8634 | child_die = sibling_die (child_die); | |
8635 | } | |
8636 | qsort (offsets, offsets_end - offsets, sizeof (*offsets), | |
8637 | unsigned_int_compar); | |
8638 | for (offsetp = offsets + 1; offsetp < offsets_end; offsetp++) | |
b64f50a1 | 8639 | if (offsetp[-1].sect_off == offsetp->sect_off) |
3e43a32a MS |
8640 | complaint (&symfile_complaints, |
8641 | _("Multiple children of DIE 0x%x refer " | |
8642 | "to DIE 0x%x as their abstract origin"), | |
b64f50a1 | 8643 | die->offset.sect_off, offsetp->sect_off); |
d389af10 JK |
8644 | |
8645 | offsetp = offsets; | |
8646 | origin_child_die = origin_die->child; | |
8647 | while (origin_child_die && origin_child_die->tag) | |
8648 | { | |
8649 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 JK |
8650 | while (offsetp < offsets_end |
8651 | && offsetp->sect_off < origin_child_die->offset.sect_off) | |
d389af10 | 8652 | offsetp++; |
b64f50a1 JK |
8653 | if (offsetp >= offsets_end |
8654 | || offsetp->sect_off > origin_child_die->offset.sect_off) | |
d389af10 JK |
8655 | { |
8656 | /* Found that ORIGIN_CHILD_DIE is really not referenced. */ | |
cd02d79d | 8657 | process_die (origin_child_die, origin_cu); |
d389af10 JK |
8658 | } |
8659 | origin_child_die = sibling_die (origin_child_die); | |
8660 | } | |
cd02d79d | 8661 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
d389af10 JK |
8662 | |
8663 | do_cleanups (cleanups); | |
8664 | } | |
8665 | ||
c906108c | 8666 | static void |
e7c27a73 | 8667 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 8668 | { |
e7c27a73 | 8669 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 8670 | struct context_stack *new; |
c906108c SS |
8671 | CORE_ADDR lowpc; |
8672 | CORE_ADDR highpc; | |
8673 | struct die_info *child_die; | |
edb3359d | 8674 | struct attribute *attr, *call_line, *call_file; |
c906108c | 8675 | char *name; |
e142c38c | 8676 | CORE_ADDR baseaddr; |
801e3a5b | 8677 | struct block *block; |
edb3359d | 8678 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
34eaf542 TT |
8679 | VEC (symbolp) *template_args = NULL; |
8680 | struct template_symbol *templ_func = NULL; | |
edb3359d DJ |
8681 | |
8682 | if (inlined_func) | |
8683 | { | |
8684 | /* If we do not have call site information, we can't show the | |
8685 | caller of this inlined function. That's too confusing, so | |
8686 | only use the scope for local variables. */ | |
8687 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
8688 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
8689 | if (call_line == NULL || call_file == NULL) | |
8690 | { | |
8691 | read_lexical_block_scope (die, cu); | |
8692 | return; | |
8693 | } | |
8694 | } | |
c906108c | 8695 | |
e142c38c DJ |
8696 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
8697 | ||
94af9270 | 8698 | name = dwarf2_name (die, cu); |
c906108c | 8699 | |
e8d05480 JB |
8700 | /* Ignore functions with missing or empty names. These are actually |
8701 | illegal according to the DWARF standard. */ | |
8702 | if (name == NULL) | |
8703 | { | |
8704 | complaint (&symfile_complaints, | |
b64f50a1 JK |
8705 | _("missing name for subprogram DIE at %d"), |
8706 | die->offset.sect_off); | |
e8d05480 JB |
8707 | return; |
8708 | } | |
8709 | ||
8710 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
8711 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) | |
8712 | { | |
ae4d0c03 PM |
8713 | attr = dwarf2_attr (die, DW_AT_external, cu); |
8714 | if (!attr || !DW_UNSND (attr)) | |
8715 | complaint (&symfile_complaints, | |
3e43a32a MS |
8716 | _("cannot get low and high bounds " |
8717 | "for subprogram DIE at %d"), | |
b64f50a1 | 8718 | die->offset.sect_off); |
e8d05480 JB |
8719 | return; |
8720 | } | |
c906108c SS |
8721 | |
8722 | lowpc += baseaddr; | |
8723 | highpc += baseaddr; | |
8724 | ||
34eaf542 TT |
8725 | /* If we have any template arguments, then we must allocate a |
8726 | different sort of symbol. */ | |
8727 | for (child_die = die->child; child_die; child_die = sibling_die (child_die)) | |
8728 | { | |
8729 | if (child_die->tag == DW_TAG_template_type_param | |
8730 | || child_die->tag == DW_TAG_template_value_param) | |
8731 | { | |
8732 | templ_func = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
8733 | struct template_symbol); | |
8734 | templ_func->base.is_cplus_template_function = 1; | |
8735 | break; | |
8736 | } | |
8737 | } | |
8738 | ||
c906108c | 8739 | new = push_context (0, lowpc); |
34eaf542 TT |
8740 | new->name = new_symbol_full (die, read_type_die (die, cu), cu, |
8741 | (struct symbol *) templ_func); | |
4c2df51b | 8742 | |
4cecd739 DJ |
8743 | /* If there is a location expression for DW_AT_frame_base, record |
8744 | it. */ | |
e142c38c | 8745 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 8746 | if (attr) |
c034e007 AC |
8747 | /* FIXME: cagney/2004-01-26: The DW_AT_frame_base's location |
8748 | expression is being recorded directly in the function's symbol | |
8749 | and not in a separate frame-base object. I guess this hack is | |
8750 | to avoid adding some sort of frame-base adjunct/annex to the | |
8751 | function's symbol :-(. The problem with doing this is that it | |
8752 | results in a function symbol with a location expression that | |
8753 | has nothing to do with the location of the function, ouch! The | |
8754 | relationship should be: a function's symbol has-a frame base; a | |
8755 | frame-base has-a location expression. */ | |
e7c27a73 | 8756 | dwarf2_symbol_mark_computed (attr, new->name, cu); |
4c2df51b | 8757 | |
e142c38c | 8758 | cu->list_in_scope = &local_symbols; |
c906108c | 8759 | |
639d11d3 | 8760 | if (die->child != NULL) |
c906108c | 8761 | { |
639d11d3 | 8762 | child_die = die->child; |
c906108c SS |
8763 | while (child_die && child_die->tag) |
8764 | { | |
34eaf542 TT |
8765 | if (child_die->tag == DW_TAG_template_type_param |
8766 | || child_die->tag == DW_TAG_template_value_param) | |
8767 | { | |
8768 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
8769 | ||
f1078f66 DJ |
8770 | if (arg != NULL) |
8771 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
8772 | } |
8773 | else | |
8774 | process_die (child_die, cu); | |
c906108c SS |
8775 | child_die = sibling_die (child_die); |
8776 | } | |
8777 | } | |
8778 | ||
d389af10 JK |
8779 | inherit_abstract_dies (die, cu); |
8780 | ||
4a811a97 UW |
8781 | /* If we have a DW_AT_specification, we might need to import using |
8782 | directives from the context of the specification DIE. See the | |
8783 | comment in determine_prefix. */ | |
8784 | if (cu->language == language_cplus | |
8785 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
8786 | { | |
8787 | struct dwarf2_cu *spec_cu = cu; | |
8788 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
8789 | ||
8790 | while (spec_die) | |
8791 | { | |
8792 | child_die = spec_die->child; | |
8793 | while (child_die && child_die->tag) | |
8794 | { | |
8795 | if (child_die->tag == DW_TAG_imported_module) | |
8796 | process_die (child_die, spec_cu); | |
8797 | child_die = sibling_die (child_die); | |
8798 | } | |
8799 | ||
8800 | /* In some cases, GCC generates specification DIEs that | |
8801 | themselves contain DW_AT_specification attributes. */ | |
8802 | spec_die = die_specification (spec_die, &spec_cu); | |
8803 | } | |
8804 | } | |
8805 | ||
c906108c SS |
8806 | new = pop_context (); |
8807 | /* Make a block for the local symbols within. */ | |
801e3a5b JB |
8808 | block = finish_block (new->name, &local_symbols, new->old_blocks, |
8809 | lowpc, highpc, objfile); | |
8810 | ||
df8a16a1 | 8811 | /* For C++, set the block's scope. */ |
f55ee35c | 8812 | if (cu->language == language_cplus || cu->language == language_fortran) |
df8a16a1 | 8813 | cp_set_block_scope (new->name, block, &objfile->objfile_obstack, |
0114d602 | 8814 | determine_prefix (die, cu), |
df8a16a1 DJ |
8815 | processing_has_namespace_info); |
8816 | ||
801e3a5b JB |
8817 | /* If we have address ranges, record them. */ |
8818 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 8819 | |
34eaf542 TT |
8820 | /* Attach template arguments to function. */ |
8821 | if (! VEC_empty (symbolp, template_args)) | |
8822 | { | |
8823 | gdb_assert (templ_func != NULL); | |
8824 | ||
8825 | templ_func->n_template_arguments = VEC_length (symbolp, template_args); | |
8826 | templ_func->template_arguments | |
8827 | = obstack_alloc (&objfile->objfile_obstack, | |
8828 | (templ_func->n_template_arguments | |
8829 | * sizeof (struct symbol *))); | |
8830 | memcpy (templ_func->template_arguments, | |
8831 | VEC_address (symbolp, template_args), | |
8832 | (templ_func->n_template_arguments * sizeof (struct symbol *))); | |
8833 | VEC_free (symbolp, template_args); | |
8834 | } | |
8835 | ||
208d8187 JB |
8836 | /* In C++, we can have functions nested inside functions (e.g., when |
8837 | a function declares a class that has methods). This means that | |
8838 | when we finish processing a function scope, we may need to go | |
8839 | back to building a containing block's symbol lists. */ | |
8840 | local_symbols = new->locals; | |
27aa8d6a | 8841 | using_directives = new->using_directives; |
208d8187 | 8842 | |
921e78cf JB |
8843 | /* If we've finished processing a top-level function, subsequent |
8844 | symbols go in the file symbol list. */ | |
8845 | if (outermost_context_p ()) | |
e142c38c | 8846 | cu->list_in_scope = &file_symbols; |
c906108c SS |
8847 | } |
8848 | ||
8849 | /* Process all the DIES contained within a lexical block scope. Start | |
8850 | a new scope, process the dies, and then close the scope. */ | |
8851 | ||
8852 | static void | |
e7c27a73 | 8853 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 8854 | { |
e7c27a73 | 8855 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 8856 | struct context_stack *new; |
c906108c SS |
8857 | CORE_ADDR lowpc, highpc; |
8858 | struct die_info *child_die; | |
e142c38c DJ |
8859 | CORE_ADDR baseaddr; |
8860 | ||
8861 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
8862 | |
8863 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
8864 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
8865 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 8866 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 8867 | describe ranges. */ |
d85a05f0 | 8868 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
c906108c SS |
8869 | return; |
8870 | lowpc += baseaddr; | |
8871 | highpc += baseaddr; | |
8872 | ||
8873 | push_context (0, lowpc); | |
639d11d3 | 8874 | if (die->child != NULL) |
c906108c | 8875 | { |
639d11d3 | 8876 | child_die = die->child; |
c906108c SS |
8877 | while (child_die && child_die->tag) |
8878 | { | |
e7c27a73 | 8879 | process_die (child_die, cu); |
c906108c SS |
8880 | child_die = sibling_die (child_die); |
8881 | } | |
8882 | } | |
8883 | new = pop_context (); | |
8884 | ||
8540c487 | 8885 | if (local_symbols != NULL || using_directives != NULL) |
c906108c | 8886 | { |
801e3a5b JB |
8887 | struct block *block |
8888 | = finish_block (0, &local_symbols, new->old_blocks, new->start_addr, | |
8889 | highpc, objfile); | |
8890 | ||
8891 | /* Note that recording ranges after traversing children, as we | |
8892 | do here, means that recording a parent's ranges entails | |
8893 | walking across all its children's ranges as they appear in | |
8894 | the address map, which is quadratic behavior. | |
8895 | ||
8896 | It would be nicer to record the parent's ranges before | |
8897 | traversing its children, simply overriding whatever you find | |
8898 | there. But since we don't even decide whether to create a | |
8899 | block until after we've traversed its children, that's hard | |
8900 | to do. */ | |
8901 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c SS |
8902 | } |
8903 | local_symbols = new->locals; | |
27aa8d6a | 8904 | using_directives = new->using_directives; |
c906108c SS |
8905 | } |
8906 | ||
96408a79 SA |
8907 | /* Read in DW_TAG_GNU_call_site and insert it to CU->call_site_htab. */ |
8908 | ||
8909 | static void | |
8910 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
8911 | { | |
8912 | struct objfile *objfile = cu->objfile; | |
8913 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
8914 | CORE_ADDR pc, baseaddr; | |
8915 | struct attribute *attr; | |
8916 | struct call_site *call_site, call_site_local; | |
8917 | void **slot; | |
8918 | int nparams; | |
8919 | struct die_info *child_die; | |
8920 | ||
8921 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
8922 | ||
8923 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
8924 | if (!attr) | |
8925 | { | |
8926 | complaint (&symfile_complaints, | |
8927 | _("missing DW_AT_low_pc for DW_TAG_GNU_call_site " | |
8928 | "DIE 0x%x [in module %s]"), | |
b64f50a1 | 8929 | die->offset.sect_off, objfile->name); |
96408a79 SA |
8930 | return; |
8931 | } | |
8932 | pc = DW_ADDR (attr) + baseaddr; | |
8933 | ||
8934 | if (cu->call_site_htab == NULL) | |
8935 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
8936 | NULL, &objfile->objfile_obstack, | |
8937 | hashtab_obstack_allocate, NULL); | |
8938 | call_site_local.pc = pc; | |
8939 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
8940 | if (*slot != NULL) | |
8941 | { | |
8942 | complaint (&symfile_complaints, | |
8943 | _("Duplicate PC %s for DW_TAG_GNU_call_site " | |
8944 | "DIE 0x%x [in module %s]"), | |
b64f50a1 | 8945 | paddress (gdbarch, pc), die->offset.sect_off, objfile->name); |
96408a79 SA |
8946 | return; |
8947 | } | |
8948 | ||
8949 | /* Count parameters at the caller. */ | |
8950 | ||
8951 | nparams = 0; | |
8952 | for (child_die = die->child; child_die && child_die->tag; | |
8953 | child_die = sibling_die (child_die)) | |
8954 | { | |
8955 | if (child_die->tag != DW_TAG_GNU_call_site_parameter) | |
8956 | { | |
8957 | complaint (&symfile_complaints, | |
8958 | _("Tag %d is not DW_TAG_GNU_call_site_parameter in " | |
8959 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
b64f50a1 | 8960 | child_die->tag, child_die->offset.sect_off, objfile->name); |
96408a79 SA |
8961 | continue; |
8962 | } | |
8963 | ||
8964 | nparams++; | |
8965 | } | |
8966 | ||
8967 | call_site = obstack_alloc (&objfile->objfile_obstack, | |
8968 | (sizeof (*call_site) | |
8969 | + (sizeof (*call_site->parameter) | |
8970 | * (nparams - 1)))); | |
8971 | *slot = call_site; | |
8972 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
8973 | call_site->pc = pc; | |
8974 | ||
8975 | if (dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
8976 | { | |
8977 | struct die_info *func_die; | |
8978 | ||
8979 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
8980 | for (func_die = die->parent; | |
8981 | func_die && func_die->tag != DW_TAG_subprogram | |
8982 | && func_die->tag != DW_TAG_subroutine_type; | |
8983 | func_die = func_die->parent); | |
8984 | ||
8985 | /* DW_AT_GNU_all_call_sites is a superset | |
8986 | of DW_AT_GNU_all_tail_call_sites. */ | |
8987 | if (func_die | |
8988 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) | |
8989 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) | |
8990 | { | |
8991 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
8992 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
8993 | both the initial caller containing the real return address PC and | |
8994 | the final callee containing the current PC of a chain of tail | |
8995 | calls do not need to have the tail call list complete. But any | |
8996 | function candidate for a virtual tail call frame searched via | |
8997 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
8998 | determined unambiguously. */ | |
8999 | } | |
9000 | else | |
9001 | { | |
9002 | struct type *func_type = NULL; | |
9003 | ||
9004 | if (func_die) | |
9005 | func_type = get_die_type (func_die, cu); | |
9006 | if (func_type != NULL) | |
9007 | { | |
9008 | gdb_assert (TYPE_CODE (func_type) == TYPE_CODE_FUNC); | |
9009 | ||
9010 | /* Enlist this call site to the function. */ | |
9011 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
9012 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
9013 | } | |
9014 | else | |
9015 | complaint (&symfile_complaints, | |
9016 | _("Cannot find function owning DW_TAG_GNU_call_site " | |
9017 | "DIE 0x%x [in module %s]"), | |
b64f50a1 | 9018 | die->offset.sect_off, objfile->name); |
96408a79 SA |
9019 | } |
9020 | } | |
9021 | ||
9022 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
9023 | if (attr == NULL) | |
9024 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
9025 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); | |
9026 | if (!attr || (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0)) | |
9027 | /* Keep NULL DWARF_BLOCK. */; | |
9028 | else if (attr_form_is_block (attr)) | |
9029 | { | |
9030 | struct dwarf2_locexpr_baton *dlbaton; | |
9031 | ||
9032 | dlbaton = obstack_alloc (&objfile->objfile_obstack, sizeof (*dlbaton)); | |
9033 | dlbaton->data = DW_BLOCK (attr)->data; | |
9034 | dlbaton->size = DW_BLOCK (attr)->size; | |
9035 | dlbaton->per_cu = cu->per_cu; | |
9036 | ||
9037 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
9038 | } | |
9039 | else if (is_ref_attr (attr)) | |
9040 | { | |
96408a79 SA |
9041 | struct dwarf2_cu *target_cu = cu; |
9042 | struct die_info *target_die; | |
9043 | ||
9044 | target_die = follow_die_ref_or_sig (die, attr, &target_cu); | |
9045 | gdb_assert (target_cu->objfile == objfile); | |
9046 | if (die_is_declaration (target_die, target_cu)) | |
9047 | { | |
9048 | const char *target_physname; | |
9049 | ||
9050 | target_physname = dwarf2_physname (NULL, target_die, target_cu); | |
9051 | if (target_physname == NULL) | |
9052 | complaint (&symfile_complaints, | |
9053 | _("DW_AT_GNU_call_site_target target DIE has invalid " | |
9054 | "physname, for referencing DIE 0x%x [in module %s]"), | |
b64f50a1 | 9055 | die->offset.sect_off, objfile->name); |
96408a79 SA |
9056 | else |
9057 | SET_FIELD_PHYSNAME (call_site->target, (char *) target_physname); | |
9058 | } | |
9059 | else | |
9060 | { | |
9061 | CORE_ADDR lowpc; | |
9062 | ||
9063 | /* DW_AT_entry_pc should be preferred. */ | |
9064 | if (!dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL)) | |
9065 | complaint (&symfile_complaints, | |
9066 | _("DW_AT_GNU_call_site_target target DIE has invalid " | |
9067 | "low pc, for referencing DIE 0x%x [in module %s]"), | |
b64f50a1 | 9068 | die->offset.sect_off, objfile->name); |
96408a79 SA |
9069 | else |
9070 | SET_FIELD_PHYSADDR (call_site->target, lowpc + baseaddr); | |
9071 | } | |
9072 | } | |
9073 | else | |
9074 | complaint (&symfile_complaints, | |
9075 | _("DW_TAG_GNU_call_site DW_AT_GNU_call_site_target is neither " | |
9076 | "block nor reference, for DIE 0x%x [in module %s]"), | |
b64f50a1 | 9077 | die->offset.sect_off, objfile->name); |
96408a79 SA |
9078 | |
9079 | call_site->per_cu = cu->per_cu; | |
9080 | ||
9081 | for (child_die = die->child; | |
9082 | child_die && child_die->tag; | |
9083 | child_die = sibling_die (child_die)) | |
9084 | { | |
96408a79 | 9085 | struct call_site_parameter *parameter; |
1788b2d3 | 9086 | struct attribute *loc, *origin; |
96408a79 SA |
9087 | |
9088 | if (child_die->tag != DW_TAG_GNU_call_site_parameter) | |
9089 | { | |
9090 | /* Already printed the complaint above. */ | |
9091 | continue; | |
9092 | } | |
9093 | ||
9094 | gdb_assert (call_site->parameter_count < nparams); | |
9095 | parameter = &call_site->parameter[call_site->parameter_count]; | |
9096 | ||
1788b2d3 JK |
9097 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
9098 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
9099 | register is contained in DW_AT_GNU_call_site_value. */ | |
96408a79 | 9100 | |
24c5c679 | 9101 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
1788b2d3 JK |
9102 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); |
9103 | if (loc == NULL && origin != NULL && is_ref_attr (origin)) | |
9104 | { | |
9105 | sect_offset offset; | |
9106 | ||
9107 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; | |
9108 | offset = dwarf2_get_ref_die_offset (origin); | |
d76b7dbc JK |
9109 | if (!offset_in_cu_p (&cu->header, offset)) |
9110 | { | |
9111 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
9112 | binding can be done only inside one CU. Such referenced DIE | |
9113 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
9114 | complaint (&symfile_complaints, | |
9115 | _("DW_AT_abstract_origin offset is not in CU for " | |
9116 | "DW_TAG_GNU_call_site child DIE 0x%x " | |
9117 | "[in module %s]"), | |
9118 | child_die->offset.sect_off, objfile->name); | |
9119 | continue; | |
9120 | } | |
1788b2d3 JK |
9121 | parameter->u.param_offset.cu_off = (offset.sect_off |
9122 | - cu->header.offset.sect_off); | |
9123 | } | |
9124 | else if (loc == NULL || origin != NULL || !attr_form_is_block (loc)) | |
96408a79 SA |
9125 | { |
9126 | complaint (&symfile_complaints, | |
9127 | _("No DW_FORM_block* DW_AT_location for " | |
9128 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
b64f50a1 | 9129 | child_die->offset.sect_off, objfile->name); |
96408a79 SA |
9130 | continue; |
9131 | } | |
24c5c679 | 9132 | else |
96408a79 | 9133 | { |
24c5c679 JK |
9134 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
9135 | (DW_BLOCK (loc)->data, &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size]); | |
9136 | if (parameter->u.dwarf_reg != -1) | |
9137 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
9138 | else if (dwarf_block_to_sp_offset (gdbarch, DW_BLOCK (loc)->data, | |
9139 | &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size], | |
9140 | ¶meter->u.fb_offset)) | |
9141 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
9142 | else | |
9143 | { | |
9144 | complaint (&symfile_complaints, | |
9145 | _("Only single DW_OP_reg or DW_OP_fbreg is supported " | |
9146 | "for DW_FORM_block* DW_AT_location is supported for " | |
9147 | "DW_TAG_GNU_call_site child DIE 0x%x " | |
9148 | "[in module %s]"), | |
9149 | child_die->offset.sect_off, objfile->name); | |
9150 | continue; | |
9151 | } | |
96408a79 SA |
9152 | } |
9153 | ||
9154 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
9155 | if (!attr_form_is_block (attr)) | |
9156 | { | |
9157 | complaint (&symfile_complaints, | |
9158 | _("No DW_FORM_block* DW_AT_GNU_call_site_value for " | |
9159 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
b64f50a1 | 9160 | child_die->offset.sect_off, objfile->name); |
96408a79 SA |
9161 | continue; |
9162 | } | |
9163 | parameter->value = DW_BLOCK (attr)->data; | |
9164 | parameter->value_size = DW_BLOCK (attr)->size; | |
9165 | ||
9166 | /* Parameters are not pre-cleared by memset above. */ | |
9167 | parameter->data_value = NULL; | |
9168 | parameter->data_value_size = 0; | |
9169 | call_site->parameter_count++; | |
9170 | ||
9171 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
9172 | if (attr) | |
9173 | { | |
9174 | if (!attr_form_is_block (attr)) | |
9175 | complaint (&symfile_complaints, | |
9176 | _("No DW_FORM_block* DW_AT_GNU_call_site_data_value for " | |
9177 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
b64f50a1 | 9178 | child_die->offset.sect_off, objfile->name); |
96408a79 SA |
9179 | else |
9180 | { | |
9181 | parameter->data_value = DW_BLOCK (attr)->data; | |
9182 | parameter->data_value_size = DW_BLOCK (attr)->size; | |
9183 | } | |
9184 | } | |
9185 | } | |
9186 | } | |
9187 | ||
43039443 | 9188 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. |
ff013f42 JK |
9189 | Return 1 if the attributes are present and valid, otherwise, return 0. |
9190 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
43039443 JK |
9191 | |
9192 | static int | |
9193 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
ff013f42 JK |
9194 | CORE_ADDR *high_return, struct dwarf2_cu *cu, |
9195 | struct partial_symtab *ranges_pst) | |
43039443 JK |
9196 | { |
9197 | struct objfile *objfile = cu->objfile; | |
9198 | struct comp_unit_head *cu_header = &cu->header; | |
9199 | bfd *obfd = objfile->obfd; | |
9200 | unsigned int addr_size = cu_header->addr_size; | |
9201 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
9202 | /* Base address selection entry. */ | |
9203 | CORE_ADDR base; | |
9204 | int found_base; | |
9205 | unsigned int dummy; | |
9206 | gdb_byte *buffer; | |
9207 | CORE_ADDR marker; | |
9208 | int low_set; | |
9209 | CORE_ADDR low = 0; | |
9210 | CORE_ADDR high = 0; | |
ff013f42 | 9211 | CORE_ADDR baseaddr; |
43039443 | 9212 | |
d00adf39 DE |
9213 | found_base = cu->base_known; |
9214 | base = cu->base_address; | |
43039443 | 9215 | |
be391dca | 9216 | dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges); |
dce234bc | 9217 | if (offset >= dwarf2_per_objfile->ranges.size) |
43039443 JK |
9218 | { |
9219 | complaint (&symfile_complaints, | |
9220 | _("Offset %d out of bounds for DW_AT_ranges attribute"), | |
9221 | offset); | |
9222 | return 0; | |
9223 | } | |
dce234bc | 9224 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
43039443 JK |
9225 | |
9226 | /* Read in the largest possible address. */ | |
9227 | marker = read_address (obfd, buffer, cu, &dummy); | |
9228 | if ((marker & mask) == mask) | |
9229 | { | |
9230 | /* If we found the largest possible address, then | |
9231 | read the base address. */ | |
9232 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
9233 | buffer += 2 * addr_size; | |
9234 | offset += 2 * addr_size; | |
9235 | found_base = 1; | |
9236 | } | |
9237 | ||
9238 | low_set = 0; | |
9239 | ||
e7030f15 | 9240 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
ff013f42 | 9241 | |
43039443 JK |
9242 | while (1) |
9243 | { | |
9244 | CORE_ADDR range_beginning, range_end; | |
9245 | ||
9246 | range_beginning = read_address (obfd, buffer, cu, &dummy); | |
9247 | buffer += addr_size; | |
9248 | range_end = read_address (obfd, buffer, cu, &dummy); | |
9249 | buffer += addr_size; | |
9250 | offset += 2 * addr_size; | |
9251 | ||
9252 | /* An end of list marker is a pair of zero addresses. */ | |
9253 | if (range_beginning == 0 && range_end == 0) | |
9254 | /* Found the end of list entry. */ | |
9255 | break; | |
9256 | ||
9257 | /* Each base address selection entry is a pair of 2 values. | |
9258 | The first is the largest possible address, the second is | |
9259 | the base address. Check for a base address here. */ | |
9260 | if ((range_beginning & mask) == mask) | |
9261 | { | |
9262 | /* If we found the largest possible address, then | |
9263 | read the base address. */ | |
9264 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
9265 | found_base = 1; | |
9266 | continue; | |
9267 | } | |
9268 | ||
9269 | if (!found_base) | |
9270 | { | |
9271 | /* We have no valid base address for the ranges | |
9272 | data. */ | |
9273 | complaint (&symfile_complaints, | |
9274 | _("Invalid .debug_ranges data (no base address)")); | |
9275 | return 0; | |
9276 | } | |
9277 | ||
9277c30c UW |
9278 | if (range_beginning > range_end) |
9279 | { | |
9280 | /* Inverted range entries are invalid. */ | |
9281 | complaint (&symfile_complaints, | |
9282 | _("Invalid .debug_ranges data (inverted range)")); | |
9283 | return 0; | |
9284 | } | |
9285 | ||
9286 | /* Empty range entries have no effect. */ | |
9287 | if (range_beginning == range_end) | |
9288 | continue; | |
9289 | ||
43039443 JK |
9290 | range_beginning += base; |
9291 | range_end += base; | |
9292 | ||
01093045 DE |
9293 | /* A not-uncommon case of bad debug info. |
9294 | Don't pollute the addrmap with bad data. */ | |
9295 | if (range_beginning + baseaddr == 0 | |
9296 | && !dwarf2_per_objfile->has_section_at_zero) | |
9297 | { | |
9298 | complaint (&symfile_complaints, | |
9299 | _(".debug_ranges entry has start address of zero" | |
9300 | " [in module %s]"), objfile->name); | |
9301 | continue; | |
9302 | } | |
9303 | ||
9277c30c | 9304 | if (ranges_pst != NULL) |
ff013f42 | 9305 | addrmap_set_empty (objfile->psymtabs_addrmap, |
3e43a32a MS |
9306 | range_beginning + baseaddr, |
9307 | range_end - 1 + baseaddr, | |
ff013f42 JK |
9308 | ranges_pst); |
9309 | ||
43039443 JK |
9310 | /* FIXME: This is recording everything as a low-high |
9311 | segment of consecutive addresses. We should have a | |
9312 | data structure for discontiguous block ranges | |
9313 | instead. */ | |
9314 | if (! low_set) | |
9315 | { | |
9316 | low = range_beginning; | |
9317 | high = range_end; | |
9318 | low_set = 1; | |
9319 | } | |
9320 | else | |
9321 | { | |
9322 | if (range_beginning < low) | |
9323 | low = range_beginning; | |
9324 | if (range_end > high) | |
9325 | high = range_end; | |
9326 | } | |
9327 | } | |
9328 | ||
9329 | if (! low_set) | |
9330 | /* If the first entry is an end-of-list marker, the range | |
9331 | describes an empty scope, i.e. no instructions. */ | |
9332 | return 0; | |
9333 | ||
9334 | if (low_return) | |
9335 | *low_return = low; | |
9336 | if (high_return) | |
9337 | *high_return = high; | |
9338 | return 1; | |
9339 | } | |
9340 | ||
af34e669 DJ |
9341 | /* Get low and high pc attributes from a die. Return 1 if the attributes |
9342 | are present and valid, otherwise, return 0. Return -1 if the range is | |
9343 | discontinuous, i.e. derived from DW_AT_ranges information. */ | |
380bca97 | 9344 | |
c906108c | 9345 | static int |
af34e669 | 9346 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 DJ |
9347 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
9348 | struct partial_symtab *pst) | |
c906108c SS |
9349 | { |
9350 | struct attribute *attr; | |
91da1414 | 9351 | struct attribute *attr_high; |
af34e669 DJ |
9352 | CORE_ADDR low = 0; |
9353 | CORE_ADDR high = 0; | |
9354 | int ret = 0; | |
c906108c | 9355 | |
91da1414 MW |
9356 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
9357 | if (attr_high) | |
af34e669 | 9358 | { |
e142c38c | 9359 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 | 9360 | if (attr) |
91da1414 MW |
9361 | { |
9362 | low = DW_ADDR (attr); | |
3019eac3 DE |
9363 | if (attr_high->form == DW_FORM_addr |
9364 | || attr_high->form == DW_FORM_GNU_addr_index) | |
91da1414 MW |
9365 | high = DW_ADDR (attr_high); |
9366 | else | |
9367 | high = low + DW_UNSND (attr_high); | |
9368 | } | |
af34e669 DJ |
9369 | else |
9370 | /* Found high w/o low attribute. */ | |
9371 | return 0; | |
9372 | ||
9373 | /* Found consecutive range of addresses. */ | |
9374 | ret = 1; | |
9375 | } | |
c906108c | 9376 | else |
af34e669 | 9377 | { |
e142c38c | 9378 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
9379 | if (attr != NULL) |
9380 | { | |
2e3cf129 DE |
9381 | unsigned int ranges_offset = DW_UNSND (attr) + cu->ranges_base; |
9382 | ||
af34e669 | 9383 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 9384 | .debug_ranges section. */ |
2e3cf129 | 9385 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst)) |
af34e669 | 9386 | return 0; |
43039443 | 9387 | /* Found discontinuous range of addresses. */ |
af34e669 DJ |
9388 | ret = -1; |
9389 | } | |
9390 | } | |
c906108c | 9391 | |
9373cf26 JK |
9392 | /* read_partial_die has also the strict LOW < HIGH requirement. */ |
9393 | if (high <= low) | |
c906108c SS |
9394 | return 0; |
9395 | ||
9396 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
9397 | eliminate duplicate copies of functions and vtables and such. | |
9398 | The linker will arbitrarily choose one and discard the others. | |
9399 | The AT_*_pc values for such functions refer to local labels in | |
9400 | these sections. If the section from that file was discarded, the | |
9401 | labels are not in the output, so the relocs get a value of 0. | |
9402 | If this is a discarded function, mark the pc bounds as invalid, | |
9403 | so that GDB will ignore it. */ | |
72dca2f5 | 9404 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
c906108c SS |
9405 | return 0; |
9406 | ||
9407 | *lowpc = low; | |
96408a79 SA |
9408 | if (highpc) |
9409 | *highpc = high; | |
af34e669 | 9410 | return ret; |
c906108c SS |
9411 | } |
9412 | ||
b084d499 JB |
9413 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
9414 | its low and high PC addresses. Do nothing if these addresses could not | |
9415 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
9416 | and HIGHPC to the high address if greater than HIGHPC. */ | |
9417 | ||
9418 | static void | |
9419 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
9420 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
9421 | struct dwarf2_cu *cu) | |
9422 | { | |
9423 | CORE_ADDR low, high; | |
9424 | struct die_info *child = die->child; | |
9425 | ||
d85a05f0 | 9426 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL)) |
b084d499 JB |
9427 | { |
9428 | *lowpc = min (*lowpc, low); | |
9429 | *highpc = max (*highpc, high); | |
9430 | } | |
9431 | ||
9432 | /* If the language does not allow nested subprograms (either inside | |
9433 | subprograms or lexical blocks), we're done. */ | |
9434 | if (cu->language != language_ada) | |
9435 | return; | |
6e70227d | 9436 | |
b084d499 JB |
9437 | /* Check all the children of the given DIE. If it contains nested |
9438 | subprograms, then check their pc bounds. Likewise, we need to | |
9439 | check lexical blocks as well, as they may also contain subprogram | |
9440 | definitions. */ | |
9441 | while (child && child->tag) | |
9442 | { | |
9443 | if (child->tag == DW_TAG_subprogram | |
9444 | || child->tag == DW_TAG_lexical_block) | |
9445 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
9446 | child = sibling_die (child); | |
9447 | } | |
9448 | } | |
9449 | ||
fae299cd DC |
9450 | /* Get the low and high pc's represented by the scope DIE, and store |
9451 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
9452 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
9453 | ||
9454 | static void | |
9455 | get_scope_pc_bounds (struct die_info *die, | |
9456 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
9457 | struct dwarf2_cu *cu) | |
9458 | { | |
9459 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
9460 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
9461 | CORE_ADDR current_low, current_high; | |
9462 | ||
d85a05f0 | 9463 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL)) |
fae299cd DC |
9464 | { |
9465 | best_low = current_low; | |
9466 | best_high = current_high; | |
9467 | } | |
9468 | else | |
9469 | { | |
9470 | struct die_info *child = die->child; | |
9471 | ||
9472 | while (child && child->tag) | |
9473 | { | |
9474 | switch (child->tag) { | |
9475 | case DW_TAG_subprogram: | |
b084d499 | 9476 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
9477 | break; |
9478 | case DW_TAG_namespace: | |
f55ee35c | 9479 | case DW_TAG_module: |
fae299cd DC |
9480 | /* FIXME: carlton/2004-01-16: Should we do this for |
9481 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
9482 | that current GCC's always emit the DIEs corresponding | |
9483 | to definitions of methods of classes as children of a | |
9484 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
9485 | the DIEs giving the declarations, which could be | |
9486 | anywhere). But I don't see any reason why the | |
9487 | standards says that they have to be there. */ | |
9488 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
9489 | ||
9490 | if (current_low != ((CORE_ADDR) -1)) | |
9491 | { | |
9492 | best_low = min (best_low, current_low); | |
9493 | best_high = max (best_high, current_high); | |
9494 | } | |
9495 | break; | |
9496 | default: | |
0963b4bd | 9497 | /* Ignore. */ |
fae299cd DC |
9498 | break; |
9499 | } | |
9500 | ||
9501 | child = sibling_die (child); | |
9502 | } | |
9503 | } | |
9504 | ||
9505 | *lowpc = best_low; | |
9506 | *highpc = best_high; | |
9507 | } | |
9508 | ||
801e3a5b JB |
9509 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
9510 | in DIE. */ | |
380bca97 | 9511 | |
801e3a5b JB |
9512 | static void |
9513 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
9514 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
9515 | { | |
bb5ed363 | 9516 | struct objfile *objfile = cu->objfile; |
801e3a5b | 9517 | struct attribute *attr; |
91da1414 | 9518 | struct attribute *attr_high; |
801e3a5b | 9519 | |
91da1414 MW |
9520 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
9521 | if (attr_high) | |
801e3a5b | 9522 | { |
801e3a5b JB |
9523 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
9524 | if (attr) | |
9525 | { | |
9526 | CORE_ADDR low = DW_ADDR (attr); | |
91da1414 | 9527 | CORE_ADDR high; |
3019eac3 DE |
9528 | if (attr_high->form == DW_FORM_addr |
9529 | || attr_high->form == DW_FORM_GNU_addr_index) | |
91da1414 MW |
9530 | high = DW_ADDR (attr_high); |
9531 | else | |
9532 | high = low + DW_UNSND (attr_high); | |
9a619af0 | 9533 | |
801e3a5b JB |
9534 | record_block_range (block, baseaddr + low, baseaddr + high - 1); |
9535 | } | |
9536 | } | |
9537 | ||
9538 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
9539 | if (attr) | |
9540 | { | |
bb5ed363 | 9541 | bfd *obfd = objfile->obfd; |
801e3a5b JB |
9542 | |
9543 | /* The value of the DW_AT_ranges attribute is the offset of the | |
9544 | address range list in the .debug_ranges section. */ | |
2e3cf129 | 9545 | unsigned long offset = DW_UNSND (attr) + cu->ranges_base; |
dce234bc | 9546 | gdb_byte *buffer = dwarf2_per_objfile->ranges.buffer + offset; |
801e3a5b JB |
9547 | |
9548 | /* For some target architectures, but not others, the | |
9549 | read_address function sign-extends the addresses it returns. | |
9550 | To recognize base address selection entries, we need a | |
9551 | mask. */ | |
9552 | unsigned int addr_size = cu->header.addr_size; | |
9553 | CORE_ADDR base_select_mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
9554 | ||
9555 | /* The base address, to which the next pair is relative. Note | |
9556 | that this 'base' is a DWARF concept: most entries in a range | |
9557 | list are relative, to reduce the number of relocs against the | |
9558 | debugging information. This is separate from this function's | |
9559 | 'baseaddr' argument, which GDB uses to relocate debugging | |
9560 | information from a shared library based on the address at | |
9561 | which the library was loaded. */ | |
d00adf39 DE |
9562 | CORE_ADDR base = cu->base_address; |
9563 | int base_known = cu->base_known; | |
801e3a5b | 9564 | |
be391dca | 9565 | gdb_assert (dwarf2_per_objfile->ranges.readin); |
dce234bc | 9566 | if (offset >= dwarf2_per_objfile->ranges.size) |
801e3a5b JB |
9567 | { |
9568 | complaint (&symfile_complaints, | |
9569 | _("Offset %lu out of bounds for DW_AT_ranges attribute"), | |
9570 | offset); | |
9571 | return; | |
9572 | } | |
9573 | ||
9574 | for (;;) | |
9575 | { | |
9576 | unsigned int bytes_read; | |
9577 | CORE_ADDR start, end; | |
9578 | ||
9579 | start = read_address (obfd, buffer, cu, &bytes_read); | |
9580 | buffer += bytes_read; | |
9581 | end = read_address (obfd, buffer, cu, &bytes_read); | |
9582 | buffer += bytes_read; | |
9583 | ||
9584 | /* Did we find the end of the range list? */ | |
9585 | if (start == 0 && end == 0) | |
9586 | break; | |
9587 | ||
9588 | /* Did we find a base address selection entry? */ | |
9589 | else if ((start & base_select_mask) == base_select_mask) | |
9590 | { | |
9591 | base = end; | |
9592 | base_known = 1; | |
9593 | } | |
9594 | ||
9595 | /* We found an ordinary address range. */ | |
9596 | else | |
9597 | { | |
9598 | if (!base_known) | |
9599 | { | |
9600 | complaint (&symfile_complaints, | |
3e43a32a MS |
9601 | _("Invalid .debug_ranges data " |
9602 | "(no base address)")); | |
801e3a5b JB |
9603 | return; |
9604 | } | |
9605 | ||
9277c30c UW |
9606 | if (start > end) |
9607 | { | |
9608 | /* Inverted range entries are invalid. */ | |
9609 | complaint (&symfile_complaints, | |
9610 | _("Invalid .debug_ranges data " | |
9611 | "(inverted range)")); | |
9612 | return; | |
9613 | } | |
9614 | ||
9615 | /* Empty range entries have no effect. */ | |
9616 | if (start == end) | |
9617 | continue; | |
9618 | ||
01093045 DE |
9619 | start += base + baseaddr; |
9620 | end += base + baseaddr; | |
9621 | ||
9622 | /* A not-uncommon case of bad debug info. | |
9623 | Don't pollute the addrmap with bad data. */ | |
9624 | if (start == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
9625 | { | |
9626 | complaint (&symfile_complaints, | |
9627 | _(".debug_ranges entry has start address of zero" | |
9628 | " [in module %s]"), objfile->name); | |
9629 | continue; | |
9630 | } | |
9631 | ||
9632 | record_block_range (block, start, end - 1); | |
801e3a5b JB |
9633 | } |
9634 | } | |
9635 | } | |
9636 | } | |
9637 | ||
685b1105 JK |
9638 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
9639 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 9640 | |
685b1105 JK |
9641 | static void |
9642 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 JK |
9643 | { |
9644 | const char *cs; | |
9645 | int major, minor, release; | |
9646 | ||
9647 | if (cu->producer == NULL) | |
9648 | { | |
9649 | /* For unknown compilers expect their behavior is DWARF version | |
9650 | compliant. | |
9651 | ||
9652 | GCC started to support .debug_types sections by -gdwarf-4 since | |
9653 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
9654 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
9655 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
9656 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 9657 | } |
685b1105 | 9658 | else if (strncmp (cu->producer, "GNU ", strlen ("GNU ")) == 0) |
60d5a603 | 9659 | { |
685b1105 JK |
9660 | /* Skip any identifier after "GNU " - such as "C++" or "Java". */ |
9661 | ||
ba919b58 TT |
9662 | cs = &cu->producer[strlen ("GNU ")]; |
9663 | while (*cs && !isdigit (*cs)) | |
9664 | cs++; | |
9665 | if (sscanf (cs, "%d.%d.%d", &major, &minor, &release) != 3) | |
9666 | { | |
9667 | /* Not recognized as GCC. */ | |
9668 | } | |
9669 | else | |
685b1105 JK |
9670 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); |
9671 | } | |
9672 | else if (strncmp (cu->producer, "Intel(R) C", strlen ("Intel(R) C")) == 0) | |
9673 | cu->producer_is_icc = 1; | |
9674 | else | |
9675 | { | |
9676 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
9677 | compliant. */ | |
60d5a603 JK |
9678 | } |
9679 | ||
ba919b58 | 9680 | cu->checked_producer = 1; |
685b1105 | 9681 | } |
ba919b58 | 9682 | |
685b1105 JK |
9683 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
9684 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
9685 | during 4.6.0 experimental. */ | |
9686 | ||
9687 | static int | |
9688 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) | |
9689 | { | |
9690 | if (!cu->checked_producer) | |
9691 | check_producer (cu); | |
9692 | ||
9693 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
9694 | } |
9695 | ||
9696 | /* Return the default accessibility type if it is not overriden by | |
9697 | DW_AT_accessibility. */ | |
9698 | ||
9699 | static enum dwarf_access_attribute | |
9700 | dwarf2_default_access_attribute (struct die_info *die, struct dwarf2_cu *cu) | |
9701 | { | |
9702 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) | |
9703 | { | |
9704 | /* The default DWARF 2 accessibility for members is public, the default | |
9705 | accessibility for inheritance is private. */ | |
9706 | ||
9707 | if (die->tag != DW_TAG_inheritance) | |
9708 | return DW_ACCESS_public; | |
9709 | else | |
9710 | return DW_ACCESS_private; | |
9711 | } | |
9712 | else | |
9713 | { | |
9714 | /* DWARF 3+ defines the default accessibility a different way. The same | |
9715 | rules apply now for DW_TAG_inheritance as for the members and it only | |
9716 | depends on the container kind. */ | |
9717 | ||
9718 | if (die->parent->tag == DW_TAG_class_type) | |
9719 | return DW_ACCESS_private; | |
9720 | else | |
9721 | return DW_ACCESS_public; | |
9722 | } | |
9723 | } | |
9724 | ||
74ac6d43 TT |
9725 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
9726 | offset. If the attribute was not found return 0, otherwise return | |
9727 | 1. If it was found but could not properly be handled, set *OFFSET | |
9728 | to 0. */ | |
9729 | ||
9730 | static int | |
9731 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
9732 | LONGEST *offset) | |
9733 | { | |
9734 | struct attribute *attr; | |
9735 | ||
9736 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
9737 | if (attr != NULL) | |
9738 | { | |
9739 | *offset = 0; | |
9740 | ||
9741 | /* Note that we do not check for a section offset first here. | |
9742 | This is because DW_AT_data_member_location is new in DWARF 4, | |
9743 | so if we see it, we can assume that a constant form is really | |
9744 | a constant and not a section offset. */ | |
9745 | if (attr_form_is_constant (attr)) | |
9746 | *offset = dwarf2_get_attr_constant_value (attr, 0); | |
9747 | else if (attr_form_is_section_offset (attr)) | |
9748 | dwarf2_complex_location_expr_complaint (); | |
9749 | else if (attr_form_is_block (attr)) | |
9750 | *offset = decode_locdesc (DW_BLOCK (attr), cu); | |
9751 | else | |
9752 | dwarf2_complex_location_expr_complaint (); | |
9753 | ||
9754 | return 1; | |
9755 | } | |
9756 | ||
9757 | return 0; | |
9758 | } | |
9759 | ||
c906108c SS |
9760 | /* Add an aggregate field to the field list. */ |
9761 | ||
9762 | static void | |
107d2387 | 9763 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 9764 | struct dwarf2_cu *cu) |
6e70227d | 9765 | { |
e7c27a73 | 9766 | struct objfile *objfile = cu->objfile; |
5e2b427d | 9767 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
9768 | struct nextfield *new_field; |
9769 | struct attribute *attr; | |
9770 | struct field *fp; | |
9771 | char *fieldname = ""; | |
9772 | ||
9773 | /* Allocate a new field list entry and link it in. */ | |
9774 | new_field = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 9775 | make_cleanup (xfree, new_field); |
c906108c | 9776 | memset (new_field, 0, sizeof (struct nextfield)); |
7d0ccb61 DJ |
9777 | |
9778 | if (die->tag == DW_TAG_inheritance) | |
9779 | { | |
9780 | new_field->next = fip->baseclasses; | |
9781 | fip->baseclasses = new_field; | |
9782 | } | |
9783 | else | |
9784 | { | |
9785 | new_field->next = fip->fields; | |
9786 | fip->fields = new_field; | |
9787 | } | |
c906108c SS |
9788 | fip->nfields++; |
9789 | ||
e142c38c | 9790 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
9791 | if (attr) |
9792 | new_field->accessibility = DW_UNSND (attr); | |
60d5a603 JK |
9793 | else |
9794 | new_field->accessibility = dwarf2_default_access_attribute (die, cu); | |
c906108c SS |
9795 | if (new_field->accessibility != DW_ACCESS_public) |
9796 | fip->non_public_fields = 1; | |
60d5a603 | 9797 | |
e142c38c | 9798 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
9799 | if (attr) |
9800 | new_field->virtuality = DW_UNSND (attr); | |
60d5a603 JK |
9801 | else |
9802 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
9803 | |
9804 | fp = &new_field->field; | |
a9a9bd0f | 9805 | |
e142c38c | 9806 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 9807 | { |
74ac6d43 TT |
9808 | LONGEST offset; |
9809 | ||
a9a9bd0f | 9810 | /* Data member other than a C++ static data member. */ |
6e70227d | 9811 | |
c906108c | 9812 | /* Get type of field. */ |
e7c27a73 | 9813 | fp->type = die_type (die, cu); |
c906108c | 9814 | |
d6a843b5 | 9815 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 9816 | |
c906108c | 9817 | /* Get bit size of field (zero if none). */ |
e142c38c | 9818 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
9819 | if (attr) |
9820 | { | |
9821 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
9822 | } | |
9823 | else | |
9824 | { | |
9825 | FIELD_BITSIZE (*fp) = 0; | |
9826 | } | |
9827 | ||
9828 | /* Get bit offset of field. */ | |
74ac6d43 TT |
9829 | if (handle_data_member_location (die, cu, &offset)) |
9830 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
e142c38c | 9831 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
9832 | if (attr) |
9833 | { | |
5e2b427d | 9834 | if (gdbarch_bits_big_endian (gdbarch)) |
c906108c SS |
9835 | { |
9836 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
9837 | additional bit offset from the MSB of the containing |
9838 | anonymous object to the MSB of the field. We don't | |
9839 | have to do anything special since we don't need to | |
9840 | know the size of the anonymous object. */ | |
f41f5e61 | 9841 | SET_FIELD_BITPOS (*fp, FIELD_BITPOS (*fp) + DW_UNSND (attr)); |
c906108c SS |
9842 | } |
9843 | else | |
9844 | { | |
9845 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
9846 | MSB of the anonymous object, subtract off the number of |
9847 | bits from the MSB of the field to the MSB of the | |
9848 | object, and then subtract off the number of bits of | |
9849 | the field itself. The result is the bit offset of | |
9850 | the LSB of the field. */ | |
c906108c SS |
9851 | int anonymous_size; |
9852 | int bit_offset = DW_UNSND (attr); | |
9853 | ||
e142c38c | 9854 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
9855 | if (attr) |
9856 | { | |
9857 | /* The size of the anonymous object containing | |
9858 | the bit field is explicit, so use the | |
9859 | indicated size (in bytes). */ | |
9860 | anonymous_size = DW_UNSND (attr); | |
9861 | } | |
9862 | else | |
9863 | { | |
9864 | /* The size of the anonymous object containing | |
9865 | the bit field must be inferred from the type | |
9866 | attribute of the data member containing the | |
9867 | bit field. */ | |
9868 | anonymous_size = TYPE_LENGTH (fp->type); | |
9869 | } | |
f41f5e61 PA |
9870 | SET_FIELD_BITPOS (*fp, |
9871 | (FIELD_BITPOS (*fp) | |
9872 | + anonymous_size * bits_per_byte | |
9873 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
9874 | } |
9875 | } | |
9876 | ||
9877 | /* Get name of field. */ | |
39cbfefa DJ |
9878 | fieldname = dwarf2_name (die, cu); |
9879 | if (fieldname == NULL) | |
9880 | fieldname = ""; | |
d8151005 DJ |
9881 | |
9882 | /* The name is already allocated along with this objfile, so we don't | |
9883 | need to duplicate it for the type. */ | |
9884 | fp->name = fieldname; | |
c906108c SS |
9885 | |
9886 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 9887 | pointer or virtual base class pointer) to private. */ |
e142c38c | 9888 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 9889 | { |
d48cc9dd | 9890 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
9891 | new_field->accessibility = DW_ACCESS_private; |
9892 | fip->non_public_fields = 1; | |
9893 | } | |
9894 | } | |
a9a9bd0f | 9895 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 9896 | { |
a9a9bd0f DC |
9897 | /* C++ static member. */ |
9898 | ||
9899 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
9900 | is a declaration, but all versions of G++ as of this writing | |
9901 | (so through at least 3.2.1) incorrectly generate | |
9902 | DW_TAG_variable tags. */ | |
6e70227d | 9903 | |
ff355380 | 9904 | const char *physname; |
c906108c | 9905 | |
a9a9bd0f | 9906 | /* Get name of field. */ |
39cbfefa DJ |
9907 | fieldname = dwarf2_name (die, cu); |
9908 | if (fieldname == NULL) | |
c906108c SS |
9909 | return; |
9910 | ||
254e6b9e | 9911 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
9912 | if (attr |
9913 | /* Only create a symbol if this is an external value. | |
9914 | new_symbol checks this and puts the value in the global symbol | |
9915 | table, which we want. If it is not external, new_symbol | |
9916 | will try to put the value in cu->list_in_scope which is wrong. */ | |
9917 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
9918 | { |
9919 | /* A static const member, not much different than an enum as far as | |
9920 | we're concerned, except that we can support more types. */ | |
9921 | new_symbol (die, NULL, cu); | |
9922 | } | |
9923 | ||
2df3850c | 9924 | /* Get physical name. */ |
ff355380 | 9925 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 9926 | |
d8151005 DJ |
9927 | /* The name is already allocated along with this objfile, so we don't |
9928 | need to duplicate it for the type. */ | |
9929 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 9930 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 9931 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
9932 | } |
9933 | else if (die->tag == DW_TAG_inheritance) | |
9934 | { | |
74ac6d43 | 9935 | LONGEST offset; |
d4b96c9a | 9936 | |
74ac6d43 TT |
9937 | /* C++ base class field. */ |
9938 | if (handle_data_member_location (die, cu, &offset)) | |
9939 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
c906108c | 9940 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 9941 | FIELD_TYPE (*fp) = die_type (die, cu); |
c906108c SS |
9942 | FIELD_NAME (*fp) = type_name_no_tag (fp->type); |
9943 | fip->nbaseclasses++; | |
9944 | } | |
9945 | } | |
9946 | ||
98751a41 JK |
9947 | /* Add a typedef defined in the scope of the FIP's class. */ |
9948 | ||
9949 | static void | |
9950 | dwarf2_add_typedef (struct field_info *fip, struct die_info *die, | |
9951 | struct dwarf2_cu *cu) | |
6e70227d | 9952 | { |
98751a41 | 9953 | struct objfile *objfile = cu->objfile; |
98751a41 JK |
9954 | struct typedef_field_list *new_field; |
9955 | struct attribute *attr; | |
9956 | struct typedef_field *fp; | |
9957 | char *fieldname = ""; | |
9958 | ||
9959 | /* Allocate a new field list entry and link it in. */ | |
9960 | new_field = xzalloc (sizeof (*new_field)); | |
9961 | make_cleanup (xfree, new_field); | |
9962 | ||
9963 | gdb_assert (die->tag == DW_TAG_typedef); | |
9964 | ||
9965 | fp = &new_field->field; | |
9966 | ||
9967 | /* Get name of field. */ | |
9968 | fp->name = dwarf2_name (die, cu); | |
9969 | if (fp->name == NULL) | |
9970 | return; | |
9971 | ||
9972 | fp->type = read_type_die (die, cu); | |
9973 | ||
9974 | new_field->next = fip->typedef_field_list; | |
9975 | fip->typedef_field_list = new_field; | |
9976 | fip->typedef_field_list_count++; | |
9977 | } | |
9978 | ||
c906108c SS |
9979 | /* Create the vector of fields, and attach it to the type. */ |
9980 | ||
9981 | static void | |
fba45db2 | 9982 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 9983 | struct dwarf2_cu *cu) |
c906108c SS |
9984 | { |
9985 | int nfields = fip->nfields; | |
9986 | ||
9987 | /* Record the field count, allocate space for the array of fields, | |
9988 | and create blank accessibility bitfields if necessary. */ | |
9989 | TYPE_NFIELDS (type) = nfields; | |
9990 | TYPE_FIELDS (type) = (struct field *) | |
9991 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
9992 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
9993 | ||
b4ba55a1 | 9994 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
9995 | { |
9996 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
9997 | ||
9998 | TYPE_FIELD_PRIVATE_BITS (type) = | |
9999 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
10000 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
10001 | ||
10002 | TYPE_FIELD_PROTECTED_BITS (type) = | |
10003 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
10004 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
10005 | ||
774b6a14 TT |
10006 | TYPE_FIELD_IGNORE_BITS (type) = |
10007 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
10008 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
10009 | } |
10010 | ||
10011 | /* If the type has baseclasses, allocate and clear a bit vector for | |
10012 | TYPE_FIELD_VIRTUAL_BITS. */ | |
b4ba55a1 | 10013 | if (fip->nbaseclasses && cu->language != language_ada) |
c906108c SS |
10014 | { |
10015 | int num_bytes = B_BYTES (fip->nbaseclasses); | |
fe1b8b76 | 10016 | unsigned char *pointer; |
c906108c SS |
10017 | |
10018 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
fe1b8b76 JB |
10019 | pointer = TYPE_ALLOC (type, num_bytes); |
10020 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; | |
c906108c SS |
10021 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->nbaseclasses); |
10022 | TYPE_N_BASECLASSES (type) = fip->nbaseclasses; | |
10023 | } | |
10024 | ||
3e43a32a MS |
10025 | /* Copy the saved-up fields into the field vector. Start from the head of |
10026 | the list, adding to the tail of the field array, so that they end up in | |
10027 | the same order in the array in which they were added to the list. */ | |
c906108c SS |
10028 | while (nfields-- > 0) |
10029 | { | |
7d0ccb61 DJ |
10030 | struct nextfield *fieldp; |
10031 | ||
10032 | if (fip->fields) | |
10033 | { | |
10034 | fieldp = fip->fields; | |
10035 | fip->fields = fieldp->next; | |
10036 | } | |
10037 | else | |
10038 | { | |
10039 | fieldp = fip->baseclasses; | |
10040 | fip->baseclasses = fieldp->next; | |
10041 | } | |
10042 | ||
10043 | TYPE_FIELD (type, nfields) = fieldp->field; | |
10044 | switch (fieldp->accessibility) | |
c906108c | 10045 | { |
c5aa993b | 10046 | case DW_ACCESS_private: |
b4ba55a1 JB |
10047 | if (cu->language != language_ada) |
10048 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
c5aa993b | 10049 | break; |
c906108c | 10050 | |
c5aa993b | 10051 | case DW_ACCESS_protected: |
b4ba55a1 JB |
10052 | if (cu->language != language_ada) |
10053 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
c5aa993b | 10054 | break; |
c906108c | 10055 | |
c5aa993b JM |
10056 | case DW_ACCESS_public: |
10057 | break; | |
c906108c | 10058 | |
c5aa993b JM |
10059 | default: |
10060 | /* Unknown accessibility. Complain and treat it as public. */ | |
10061 | { | |
e2e0b3e5 | 10062 | complaint (&symfile_complaints, _("unsupported accessibility %d"), |
7d0ccb61 | 10063 | fieldp->accessibility); |
c5aa993b JM |
10064 | } |
10065 | break; | |
c906108c SS |
10066 | } |
10067 | if (nfields < fip->nbaseclasses) | |
10068 | { | |
7d0ccb61 | 10069 | switch (fieldp->virtuality) |
c906108c | 10070 | { |
c5aa993b JM |
10071 | case DW_VIRTUALITY_virtual: |
10072 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 10073 | if (cu->language == language_ada) |
a73c6dcd | 10074 | error (_("unexpected virtuality in component of Ada type")); |
c5aa993b JM |
10075 | SET_TYPE_FIELD_VIRTUAL (type, nfields); |
10076 | break; | |
c906108c SS |
10077 | } |
10078 | } | |
c906108c SS |
10079 | } |
10080 | } | |
10081 | ||
c906108c SS |
10082 | /* Add a member function to the proper fieldlist. */ |
10083 | ||
10084 | static void | |
107d2387 | 10085 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 10086 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 10087 | { |
e7c27a73 | 10088 | struct objfile *objfile = cu->objfile; |
c906108c SS |
10089 | struct attribute *attr; |
10090 | struct fnfieldlist *flp; | |
10091 | int i; | |
10092 | struct fn_field *fnp; | |
10093 | char *fieldname; | |
c906108c | 10094 | struct nextfnfield *new_fnfield; |
f792889a | 10095 | struct type *this_type; |
60d5a603 | 10096 | enum dwarf_access_attribute accessibility; |
c906108c | 10097 | |
b4ba55a1 | 10098 | if (cu->language == language_ada) |
a73c6dcd | 10099 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 10100 | |
2df3850c | 10101 | /* Get name of member function. */ |
39cbfefa DJ |
10102 | fieldname = dwarf2_name (die, cu); |
10103 | if (fieldname == NULL) | |
2df3850c | 10104 | return; |
c906108c | 10105 | |
c906108c SS |
10106 | /* Look up member function name in fieldlist. */ |
10107 | for (i = 0; i < fip->nfnfields; i++) | |
10108 | { | |
27bfe10e | 10109 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
c906108c SS |
10110 | break; |
10111 | } | |
10112 | ||
10113 | /* Create new list element if necessary. */ | |
10114 | if (i < fip->nfnfields) | |
10115 | flp = &fip->fnfieldlists[i]; | |
10116 | else | |
10117 | { | |
10118 | if ((fip->nfnfields % DW_FIELD_ALLOC_CHUNK) == 0) | |
10119 | { | |
10120 | fip->fnfieldlists = (struct fnfieldlist *) | |
10121 | xrealloc (fip->fnfieldlists, | |
10122 | (fip->nfnfields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 10123 | * sizeof (struct fnfieldlist)); |
c906108c | 10124 | if (fip->nfnfields == 0) |
c13c43fd | 10125 | make_cleanup (free_current_contents, &fip->fnfieldlists); |
c906108c SS |
10126 | } |
10127 | flp = &fip->fnfieldlists[fip->nfnfields]; | |
10128 | flp->name = fieldname; | |
10129 | flp->length = 0; | |
10130 | flp->head = NULL; | |
3da10d80 | 10131 | i = fip->nfnfields++; |
c906108c SS |
10132 | } |
10133 | ||
10134 | /* Create a new member function field and chain it to the field list | |
0963b4bd | 10135 | entry. */ |
c906108c | 10136 | new_fnfield = (struct nextfnfield *) xmalloc (sizeof (struct nextfnfield)); |
b8c9b27d | 10137 | make_cleanup (xfree, new_fnfield); |
c906108c SS |
10138 | memset (new_fnfield, 0, sizeof (struct nextfnfield)); |
10139 | new_fnfield->next = flp->head; | |
10140 | flp->head = new_fnfield; | |
10141 | flp->length++; | |
10142 | ||
10143 | /* Fill in the member function field info. */ | |
10144 | fnp = &new_fnfield->fnfield; | |
3da10d80 KS |
10145 | |
10146 | /* Delay processing of the physname until later. */ | |
10147 | if (cu->language == language_cplus || cu->language == language_java) | |
10148 | { | |
10149 | add_to_method_list (type, i, flp->length - 1, fieldname, | |
10150 | die, cu); | |
10151 | } | |
10152 | else | |
10153 | { | |
1d06ead6 | 10154 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
10155 | fnp->physname = physname ? physname : ""; |
10156 | } | |
10157 | ||
c906108c | 10158 | fnp->type = alloc_type (objfile); |
f792889a DJ |
10159 | this_type = read_type_die (die, cu); |
10160 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 10161 | { |
f792889a | 10162 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 10163 | |
f792889a | 10164 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
10165 | of the method itself (TYPE_CODE_METHOD). */ |
10166 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
10167 | TYPE_TARGET_TYPE (this_type), |
10168 | TYPE_FIELDS (this_type), | |
10169 | TYPE_NFIELDS (this_type), | |
10170 | TYPE_VARARGS (this_type)); | |
c906108c SS |
10171 | |
10172 | /* Handle static member functions. | |
c5aa993b | 10173 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
10174 | member functions. G++ helps GDB by marking the first |
10175 | parameter for non-static member functions (which is the this | |
10176 | pointer) as artificial. We obtain this information from | |
10177 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 10178 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
10179 | fnp->voffset = VOFFSET_STATIC; |
10180 | } | |
10181 | else | |
e2e0b3e5 | 10182 | complaint (&symfile_complaints, _("member function type missing for '%s'"), |
3da10d80 | 10183 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
10184 | |
10185 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 10186 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 10187 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 10188 | |
3e43a32a MS |
10189 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
10190 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
10191 | |
10192 | /* Get accessibility. */ | |
e142c38c | 10193 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c | 10194 | if (attr) |
60d5a603 JK |
10195 | accessibility = DW_UNSND (attr); |
10196 | else | |
10197 | accessibility = dwarf2_default_access_attribute (die, cu); | |
10198 | switch (accessibility) | |
c906108c | 10199 | { |
60d5a603 JK |
10200 | case DW_ACCESS_private: |
10201 | fnp->is_private = 1; | |
10202 | break; | |
10203 | case DW_ACCESS_protected: | |
10204 | fnp->is_protected = 1; | |
10205 | break; | |
c906108c SS |
10206 | } |
10207 | ||
b02dede2 | 10208 | /* Check for artificial methods. */ |
e142c38c | 10209 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
10210 | if (attr && DW_UNSND (attr) != 0) |
10211 | fnp->is_artificial = 1; | |
10212 | ||
0d564a31 | 10213 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
10214 | function. For older versions of GCC, this is an offset in the |
10215 | appropriate virtual table, as specified by DW_AT_containing_type. | |
10216 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
10217 | to the object address. */ |
10218 | ||
e142c38c | 10219 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
aec5aa8b | 10220 | if (attr) |
8e19ed76 | 10221 | { |
aec5aa8b | 10222 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 10223 | { |
aec5aa8b TT |
10224 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
10225 | { | |
10226 | /* Old-style GCC. */ | |
10227 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
10228 | } | |
10229 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
10230 | || (DW_BLOCK (attr)->size > 1 | |
10231 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
10232 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
10233 | { | |
10234 | struct dwarf_block blk; | |
10235 | int offset; | |
10236 | ||
10237 | offset = (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
10238 | ? 1 : 2); | |
10239 | blk.size = DW_BLOCK (attr)->size - offset; | |
10240 | blk.data = DW_BLOCK (attr)->data + offset; | |
10241 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); | |
10242 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
10243 | dwarf2_complex_location_expr_complaint (); | |
10244 | else | |
10245 | fnp->voffset /= cu->header.addr_size; | |
10246 | fnp->voffset += 2; | |
10247 | } | |
10248 | else | |
10249 | dwarf2_complex_location_expr_complaint (); | |
10250 | ||
10251 | if (!fnp->fcontext) | |
10252 | fnp->fcontext = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
10253 | } | |
3690dd37 | 10254 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 10255 | { |
4d3c2250 | 10256 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
10257 | } |
10258 | else | |
10259 | { | |
4d3c2250 KB |
10260 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
10261 | fieldname); | |
8e19ed76 | 10262 | } |
0d564a31 | 10263 | } |
d48cc9dd DJ |
10264 | else |
10265 | { | |
10266 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
10267 | if (attr && DW_UNSND (attr)) | |
10268 | { | |
10269 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
10270 | complaint (&symfile_complaints, | |
3e43a32a MS |
10271 | _("Member function \"%s\" (offset %d) is virtual " |
10272 | "but the vtable offset is not specified"), | |
b64f50a1 | 10273 | fieldname, die->offset.sect_off); |
9655fd1a | 10274 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
10275 | TYPE_CPLUS_DYNAMIC (type) = 1; |
10276 | } | |
10277 | } | |
c906108c SS |
10278 | } |
10279 | ||
10280 | /* Create the vector of member function fields, and attach it to the type. */ | |
10281 | ||
10282 | static void | |
fba45db2 | 10283 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 10284 | struct dwarf2_cu *cu) |
c906108c SS |
10285 | { |
10286 | struct fnfieldlist *flp; | |
c906108c SS |
10287 | int i; |
10288 | ||
b4ba55a1 | 10289 | if (cu->language == language_ada) |
a73c6dcd | 10290 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 10291 | |
c906108c SS |
10292 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
10293 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
10294 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * fip->nfnfields); | |
10295 | ||
10296 | for (i = 0, flp = fip->fnfieldlists; i < fip->nfnfields; i++, flp++) | |
10297 | { | |
10298 | struct nextfnfield *nfp = flp->head; | |
10299 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); | |
10300 | int k; | |
10301 | ||
10302 | TYPE_FN_FIELDLIST_NAME (type, i) = flp->name; | |
10303 | TYPE_FN_FIELDLIST_LENGTH (type, i) = flp->length; | |
10304 | fn_flp->fn_fields = (struct fn_field *) | |
10305 | TYPE_ALLOC (type, sizeof (struct fn_field) * flp->length); | |
10306 | for (k = flp->length; (k--, nfp); nfp = nfp->next) | |
c5aa993b | 10307 | fn_flp->fn_fields[k] = nfp->fnfield; |
c906108c SS |
10308 | } |
10309 | ||
10310 | TYPE_NFN_FIELDS (type) = fip->nfnfields; | |
c906108c SS |
10311 | } |
10312 | ||
1168df01 JB |
10313 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
10314 | language, zero otherwise. */ | |
10315 | static int | |
10316 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
10317 | { | |
10318 | static const char vptr[] = "_vptr"; | |
987504bb | 10319 | static const char vtable[] = "vtable"; |
1168df01 | 10320 | |
987504bb JJ |
10321 | /* Look for the C++ and Java forms of the vtable. */ |
10322 | if ((cu->language == language_java | |
10323 | && strncmp (name, vtable, sizeof (vtable) - 1) == 0) | |
10324 | || (strncmp (name, vptr, sizeof (vptr) - 1) == 0 | |
10325 | && is_cplus_marker (name[sizeof (vptr) - 1]))) | |
1168df01 JB |
10326 | return 1; |
10327 | ||
10328 | return 0; | |
10329 | } | |
10330 | ||
c0dd20ea | 10331 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
10332 | functions, with the ABI-specified layout. If TYPE describes |
10333 | such a structure, smash it into a member function type. | |
61049d3b DJ |
10334 | |
10335 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
10336 | This is GCC PR debug/28767. */ | |
c0dd20ea | 10337 | |
0b92b5bb TT |
10338 | static void |
10339 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 10340 | { |
0b92b5bb | 10341 | struct type *pfn_type, *domain_type, *new_type; |
c0dd20ea DJ |
10342 | |
10343 | /* Check for a structure with no name and two children. */ | |
0b92b5bb TT |
10344 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2) |
10345 | return; | |
c0dd20ea DJ |
10346 | |
10347 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
10348 | if (TYPE_FIELD_NAME (type, 0) == NULL |
10349 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
10350 | || TYPE_FIELD_NAME (type, 1) == NULL | |
10351 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
10352 | return; | |
c0dd20ea DJ |
10353 | |
10354 | /* Find the type of the method. */ | |
0b92b5bb | 10355 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea DJ |
10356 | if (pfn_type == NULL |
10357 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
10358 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
0b92b5bb | 10359 | return; |
c0dd20ea DJ |
10360 | |
10361 | /* Look for the "this" argument. */ | |
10362 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
10363 | if (TYPE_NFIELDS (pfn_type) == 0 | |
0b92b5bb | 10364 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
c0dd20ea | 10365 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) |
0b92b5bb | 10366 | return; |
c0dd20ea DJ |
10367 | |
10368 | domain_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); | |
0b92b5bb TT |
10369 | new_type = alloc_type (objfile); |
10370 | smash_to_method_type (new_type, domain_type, TYPE_TARGET_TYPE (pfn_type), | |
c0dd20ea DJ |
10371 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), |
10372 | TYPE_VARARGS (pfn_type)); | |
0b92b5bb | 10373 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 10374 | } |
1168df01 | 10375 | |
685b1105 JK |
10376 | /* Return non-zero if the CU's PRODUCER string matches the Intel C/C++ compiler |
10377 | (icc). */ | |
10378 | ||
10379 | static int | |
10380 | producer_is_icc (struct dwarf2_cu *cu) | |
10381 | { | |
10382 | if (!cu->checked_producer) | |
10383 | check_producer (cu); | |
10384 | ||
10385 | return cu->producer_is_icc; | |
10386 | } | |
10387 | ||
c906108c | 10388 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
10389 | (definition) to create a type for the structure or union. Fill in |
10390 | the type's name and general properties; the members will not be | |
10391 | processed until process_structure_type. | |
c906108c | 10392 | |
c767944b DJ |
10393 | NOTE: we need to call these functions regardless of whether or not the |
10394 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c SS |
10395 | structure or union. This gets the type entered into our set of |
10396 | user defined types. | |
10397 | ||
10398 | However, if the structure is incomplete (an opaque struct/union) | |
10399 | then suppress creating a symbol table entry for it since gdb only | |
10400 | wants to find the one with the complete definition. Note that if | |
10401 | it is complete, we just call new_symbol, which does it's own | |
10402 | checking about whether the struct/union is anonymous or not (and | |
10403 | suppresses creating a symbol table entry itself). */ | |
10404 | ||
f792889a | 10405 | static struct type * |
134d01f1 | 10406 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10407 | { |
e7c27a73 | 10408 | struct objfile *objfile = cu->objfile; |
c906108c SS |
10409 | struct type *type; |
10410 | struct attribute *attr; | |
39cbfefa | 10411 | char *name; |
c906108c | 10412 | |
348e048f DE |
10413 | /* If the definition of this type lives in .debug_types, read that type. |
10414 | Don't follow DW_AT_specification though, that will take us back up | |
10415 | the chain and we want to go down. */ | |
45e58e77 | 10416 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
10417 | if (attr) |
10418 | { | |
10419 | struct dwarf2_cu *type_cu = cu; | |
10420 | struct die_info *type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
9a619af0 | 10421 | |
348e048f DE |
10422 | /* We could just recurse on read_structure_type, but we need to call |
10423 | get_die_type to ensure only one type for this DIE is created. | |
10424 | This is important, for example, because for c++ classes we need | |
10425 | TYPE_NAME set which is only done by new_symbol. Blech. */ | |
10426 | type = read_type_die (type_die, type_cu); | |
9dc481d3 DE |
10427 | |
10428 | /* TYPE_CU may not be the same as CU. | |
10429 | Ensure TYPE is recorded in CU's type_hash table. */ | |
348e048f DE |
10430 | return set_die_type (die, type, cu); |
10431 | } | |
10432 | ||
c0dd20ea | 10433 | type = alloc_type (objfile); |
c906108c | 10434 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 10435 | |
39cbfefa DJ |
10436 | name = dwarf2_name (die, cu); |
10437 | if (name != NULL) | |
c906108c | 10438 | { |
987504bb JJ |
10439 | if (cu->language == language_cplus |
10440 | || cu->language == language_java) | |
63d06c5c | 10441 | { |
3da10d80 KS |
10442 | char *full_name = (char *) dwarf2_full_name (name, die, cu); |
10443 | ||
10444 | /* dwarf2_full_name might have already finished building the DIE's | |
10445 | type. If so, there is no need to continue. */ | |
10446 | if (get_die_type (die, cu) != NULL) | |
10447 | return get_die_type (die, cu); | |
10448 | ||
10449 | TYPE_TAG_NAME (type) = full_name; | |
94af9270 KS |
10450 | if (die->tag == DW_TAG_structure_type |
10451 | || die->tag == DW_TAG_class_type) | |
10452 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c DC |
10453 | } |
10454 | else | |
10455 | { | |
d8151005 DJ |
10456 | /* The name is already allocated along with this objfile, so |
10457 | we don't need to duplicate it for the type. */ | |
94af9270 KS |
10458 | TYPE_TAG_NAME (type) = (char *) name; |
10459 | if (die->tag == DW_TAG_class_type) | |
10460 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c | 10461 | } |
c906108c SS |
10462 | } |
10463 | ||
10464 | if (die->tag == DW_TAG_structure_type) | |
10465 | { | |
10466 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
10467 | } | |
10468 | else if (die->tag == DW_TAG_union_type) | |
10469 | { | |
10470 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
10471 | } | |
10472 | else | |
10473 | { | |
c906108c SS |
10474 | TYPE_CODE (type) = TYPE_CODE_CLASS; |
10475 | } | |
10476 | ||
0cc2414c TT |
10477 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
10478 | TYPE_DECLARED_CLASS (type) = 1; | |
10479 | ||
e142c38c | 10480 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
10481 | if (attr) |
10482 | { | |
10483 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
10484 | } | |
10485 | else | |
10486 | { | |
10487 | TYPE_LENGTH (type) = 0; | |
10488 | } | |
10489 | ||
685b1105 JK |
10490 | if (producer_is_icc (cu)) |
10491 | { | |
10492 | /* ICC does not output the required DW_AT_declaration | |
10493 | on incomplete types, but gives them a size of zero. */ | |
10494 | } | |
10495 | else | |
10496 | TYPE_STUB_SUPPORTED (type) = 1; | |
10497 | ||
dc718098 | 10498 | if (die_is_declaration (die, cu)) |
876cecd0 | 10499 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
10500 | else if (attr == NULL && die->child == NULL |
10501 | && producer_is_realview (cu->producer)) | |
10502 | /* RealView does not output the required DW_AT_declaration | |
10503 | on incomplete types. */ | |
10504 | TYPE_STUB (type) = 1; | |
dc718098 | 10505 | |
c906108c SS |
10506 | /* We need to add the type field to the die immediately so we don't |
10507 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 10508 | type within the structure itself. */ |
1c379e20 | 10509 | set_die_type (die, type, cu); |
c906108c | 10510 | |
7e314c57 JK |
10511 | /* set_die_type should be already done. */ |
10512 | set_descriptive_type (type, die, cu); | |
10513 | ||
c767944b DJ |
10514 | return type; |
10515 | } | |
10516 | ||
10517 | /* Finish creating a structure or union type, including filling in | |
10518 | its members and creating a symbol for it. */ | |
10519 | ||
10520 | static void | |
10521 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
10522 | { | |
10523 | struct objfile *objfile = cu->objfile; | |
10524 | struct die_info *child_die = die->child; | |
10525 | struct type *type; | |
10526 | ||
10527 | type = get_die_type (die, cu); | |
10528 | if (type == NULL) | |
10529 | type = read_structure_type (die, cu); | |
10530 | ||
e142c38c | 10531 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
10532 | { |
10533 | struct field_info fi; | |
10534 | struct die_info *child_die; | |
34eaf542 | 10535 | VEC (symbolp) *template_args = NULL; |
c767944b | 10536 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
c906108c SS |
10537 | |
10538 | memset (&fi, 0, sizeof (struct field_info)); | |
10539 | ||
639d11d3 | 10540 | child_die = die->child; |
c906108c SS |
10541 | |
10542 | while (child_die && child_die->tag) | |
10543 | { | |
a9a9bd0f DC |
10544 | if (child_die->tag == DW_TAG_member |
10545 | || child_die->tag == DW_TAG_variable) | |
c906108c | 10546 | { |
a9a9bd0f DC |
10547 | /* NOTE: carlton/2002-11-05: A C++ static data member |
10548 | should be a DW_TAG_member that is a declaration, but | |
10549 | all versions of G++ as of this writing (so through at | |
10550 | least 3.2.1) incorrectly generate DW_TAG_variable | |
10551 | tags for them instead. */ | |
e7c27a73 | 10552 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 10553 | } |
8713b1b1 | 10554 | else if (child_die->tag == DW_TAG_subprogram) |
c906108c | 10555 | { |
0963b4bd | 10556 | /* C++ member function. */ |
e7c27a73 | 10557 | dwarf2_add_member_fn (&fi, child_die, type, cu); |
c906108c SS |
10558 | } |
10559 | else if (child_die->tag == DW_TAG_inheritance) | |
10560 | { | |
10561 | /* C++ base class field. */ | |
e7c27a73 | 10562 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 10563 | } |
98751a41 JK |
10564 | else if (child_die->tag == DW_TAG_typedef) |
10565 | dwarf2_add_typedef (&fi, child_die, cu); | |
34eaf542 TT |
10566 | else if (child_die->tag == DW_TAG_template_type_param |
10567 | || child_die->tag == DW_TAG_template_value_param) | |
10568 | { | |
10569 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
10570 | ||
f1078f66 DJ |
10571 | if (arg != NULL) |
10572 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
10573 | } |
10574 | ||
c906108c SS |
10575 | child_die = sibling_die (child_die); |
10576 | } | |
10577 | ||
34eaf542 TT |
10578 | /* Attach template arguments to type. */ |
10579 | if (! VEC_empty (symbolp, template_args)) | |
10580 | { | |
10581 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
10582 | TYPE_N_TEMPLATE_ARGUMENTS (type) | |
10583 | = VEC_length (symbolp, template_args); | |
10584 | TYPE_TEMPLATE_ARGUMENTS (type) | |
10585 | = obstack_alloc (&objfile->objfile_obstack, | |
10586 | (TYPE_N_TEMPLATE_ARGUMENTS (type) | |
10587 | * sizeof (struct symbol *))); | |
10588 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), | |
10589 | VEC_address (symbolp, template_args), | |
10590 | (TYPE_N_TEMPLATE_ARGUMENTS (type) | |
10591 | * sizeof (struct symbol *))); | |
10592 | VEC_free (symbolp, template_args); | |
10593 | } | |
10594 | ||
c906108c SS |
10595 | /* Attach fields and member functions to the type. */ |
10596 | if (fi.nfields) | |
e7c27a73 | 10597 | dwarf2_attach_fields_to_type (&fi, type, cu); |
c906108c SS |
10598 | if (fi.nfnfields) |
10599 | { | |
e7c27a73 | 10600 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 10601 | |
c5aa993b | 10602 | /* Get the type which refers to the base class (possibly this |
c906108c | 10603 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
10604 | class from the DW_AT_containing_type attribute. This use of |
10605 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 10606 | |
e142c38c | 10607 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 10608 | { |
e7c27a73 | 10609 | struct type *t = die_containing_type (die, cu); |
c906108c SS |
10610 | |
10611 | TYPE_VPTR_BASETYPE (type) = t; | |
10612 | if (type == t) | |
10613 | { | |
c906108c SS |
10614 | int i; |
10615 | ||
10616 | /* Our own class provides vtbl ptr. */ | |
10617 | for (i = TYPE_NFIELDS (t) - 1; | |
10618 | i >= TYPE_N_BASECLASSES (t); | |
10619 | --i) | |
10620 | { | |
0d5cff50 | 10621 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 10622 | |
1168df01 | 10623 | if (is_vtable_name (fieldname, cu)) |
c906108c SS |
10624 | { |
10625 | TYPE_VPTR_FIELDNO (type) = i; | |
10626 | break; | |
10627 | } | |
10628 | } | |
10629 | ||
10630 | /* Complain if virtual function table field not found. */ | |
10631 | if (i < TYPE_N_BASECLASSES (t)) | |
4d3c2250 | 10632 | complaint (&symfile_complaints, |
3e43a32a MS |
10633 | _("virtual function table pointer " |
10634 | "not found when defining class '%s'"), | |
4d3c2250 KB |
10635 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : |
10636 | ""); | |
c906108c SS |
10637 | } |
10638 | else | |
10639 | { | |
10640 | TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t); | |
10641 | } | |
10642 | } | |
f6235d4c EZ |
10643 | else if (cu->producer |
10644 | && strncmp (cu->producer, | |
10645 | "IBM(R) XL C/C++ Advanced Edition", 32) == 0) | |
10646 | { | |
10647 | /* The IBM XLC compiler does not provide direct indication | |
10648 | of the containing type, but the vtable pointer is | |
10649 | always named __vfp. */ | |
10650 | ||
10651 | int i; | |
10652 | ||
10653 | for (i = TYPE_NFIELDS (type) - 1; | |
10654 | i >= TYPE_N_BASECLASSES (type); | |
10655 | --i) | |
10656 | { | |
10657 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
10658 | { | |
10659 | TYPE_VPTR_FIELDNO (type) = i; | |
10660 | TYPE_VPTR_BASETYPE (type) = type; | |
10661 | break; | |
10662 | } | |
10663 | } | |
10664 | } | |
c906108c | 10665 | } |
98751a41 JK |
10666 | |
10667 | /* Copy fi.typedef_field_list linked list elements content into the | |
10668 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
10669 | if (fi.typedef_field_list) | |
10670 | { | |
10671 | int i = fi.typedef_field_list_count; | |
10672 | ||
a0d7a4ff | 10673 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 JK |
10674 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
10675 | = TYPE_ALLOC (type, sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * i); | |
10676 | TYPE_TYPEDEF_FIELD_COUNT (type) = i; | |
10677 | ||
10678 | /* Reverse the list order to keep the debug info elements order. */ | |
10679 | while (--i >= 0) | |
10680 | { | |
10681 | struct typedef_field *dest, *src; | |
6e70227d | 10682 | |
98751a41 JK |
10683 | dest = &TYPE_TYPEDEF_FIELD (type, i); |
10684 | src = &fi.typedef_field_list->field; | |
10685 | fi.typedef_field_list = fi.typedef_field_list->next; | |
10686 | *dest = *src; | |
10687 | } | |
10688 | } | |
c767944b DJ |
10689 | |
10690 | do_cleanups (back_to); | |
eb2a6f42 TT |
10691 | |
10692 | if (HAVE_CPLUS_STRUCT (type)) | |
10693 | TYPE_CPLUS_REALLY_JAVA (type) = cu->language == language_java; | |
c906108c | 10694 | } |
63d06c5c | 10695 | |
bb5ed363 | 10696 | quirk_gcc_member_function_pointer (type, objfile); |
0b92b5bb | 10697 | |
90aeadfc DC |
10698 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
10699 | snapshots) has been known to create a die giving a declaration | |
10700 | for a class that has, as a child, a die giving a definition for a | |
10701 | nested class. So we have to process our children even if the | |
10702 | current die is a declaration. Normally, of course, a declaration | |
10703 | won't have any children at all. */ | |
134d01f1 | 10704 | |
90aeadfc DC |
10705 | while (child_die != NULL && child_die->tag) |
10706 | { | |
10707 | if (child_die->tag == DW_TAG_member | |
10708 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
10709 | || child_die->tag == DW_TAG_inheritance |
10710 | || child_die->tag == DW_TAG_template_value_param | |
10711 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 10712 | { |
90aeadfc | 10713 | /* Do nothing. */ |
134d01f1 | 10714 | } |
90aeadfc DC |
10715 | else |
10716 | process_die (child_die, cu); | |
134d01f1 | 10717 | |
90aeadfc | 10718 | child_die = sibling_die (child_die); |
134d01f1 DJ |
10719 | } |
10720 | ||
fa4028e9 JB |
10721 | /* Do not consider external references. According to the DWARF standard, |
10722 | these DIEs are identified by the fact that they have no byte_size | |
10723 | attribute, and a declaration attribute. */ | |
10724 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
10725 | || !die_is_declaration (die, cu)) | |
c767944b | 10726 | new_symbol (die, type, cu); |
134d01f1 DJ |
10727 | } |
10728 | ||
10729 | /* Given a DW_AT_enumeration_type die, set its type. We do not | |
10730 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 10731 | |
f792889a | 10732 | static struct type * |
134d01f1 | 10733 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10734 | { |
e7c27a73 | 10735 | struct objfile *objfile = cu->objfile; |
c906108c | 10736 | struct type *type; |
c906108c | 10737 | struct attribute *attr; |
0114d602 | 10738 | const char *name; |
134d01f1 | 10739 | |
348e048f DE |
10740 | /* If the definition of this type lives in .debug_types, read that type. |
10741 | Don't follow DW_AT_specification though, that will take us back up | |
10742 | the chain and we want to go down. */ | |
45e58e77 | 10743 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
10744 | if (attr) |
10745 | { | |
10746 | struct dwarf2_cu *type_cu = cu; | |
10747 | struct die_info *type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
9a619af0 | 10748 | |
348e048f | 10749 | type = read_type_die (type_die, type_cu); |
9dc481d3 DE |
10750 | |
10751 | /* TYPE_CU may not be the same as CU. | |
10752 | Ensure TYPE is recorded in CU's type_hash table. */ | |
348e048f DE |
10753 | return set_die_type (die, type, cu); |
10754 | } | |
10755 | ||
c906108c SS |
10756 | type = alloc_type (objfile); |
10757 | ||
10758 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
94af9270 | 10759 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 10760 | if (name != NULL) |
0114d602 | 10761 | TYPE_TAG_NAME (type) = (char *) name; |
c906108c | 10762 | |
e142c38c | 10763 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
10764 | if (attr) |
10765 | { | |
10766 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
10767 | } | |
10768 | else | |
10769 | { | |
10770 | TYPE_LENGTH (type) = 0; | |
10771 | } | |
10772 | ||
137033e9 JB |
10773 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
10774 | declared as private in the package spec, and then defined only | |
10775 | inside the package body. Such types are known as Taft Amendment | |
10776 | Types. When another package uses such a type, an incomplete DIE | |
10777 | may be generated by the compiler. */ | |
02eb380e | 10778 | if (die_is_declaration (die, cu)) |
876cecd0 | 10779 | TYPE_STUB (type) = 1; |
02eb380e | 10780 | |
f792889a | 10781 | return set_die_type (die, type, cu); |
134d01f1 DJ |
10782 | } |
10783 | ||
10784 | /* Given a pointer to a die which begins an enumeration, process all | |
10785 | the dies that define the members of the enumeration, and create the | |
10786 | symbol for the enumeration type. | |
10787 | ||
10788 | NOTE: We reverse the order of the element list. */ | |
10789 | ||
10790 | static void | |
10791 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
10792 | { | |
f792889a | 10793 | struct type *this_type; |
134d01f1 | 10794 | |
f792889a DJ |
10795 | this_type = get_die_type (die, cu); |
10796 | if (this_type == NULL) | |
10797 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 10798 | |
639d11d3 | 10799 | if (die->child != NULL) |
c906108c | 10800 | { |
9dc481d3 DE |
10801 | struct die_info *child_die; |
10802 | struct symbol *sym; | |
10803 | struct field *fields = NULL; | |
10804 | int num_fields = 0; | |
10805 | int unsigned_enum = 1; | |
10806 | char *name; | |
cafec441 TT |
10807 | int flag_enum = 1; |
10808 | ULONGEST mask = 0; | |
9dc481d3 | 10809 | |
639d11d3 | 10810 | child_die = die->child; |
c906108c SS |
10811 | while (child_die && child_die->tag) |
10812 | { | |
10813 | if (child_die->tag != DW_TAG_enumerator) | |
10814 | { | |
e7c27a73 | 10815 | process_die (child_die, cu); |
c906108c SS |
10816 | } |
10817 | else | |
10818 | { | |
39cbfefa DJ |
10819 | name = dwarf2_name (child_die, cu); |
10820 | if (name) | |
c906108c | 10821 | { |
f792889a | 10822 | sym = new_symbol (child_die, this_type, cu); |
c906108c | 10823 | if (SYMBOL_VALUE (sym) < 0) |
cafec441 TT |
10824 | { |
10825 | unsigned_enum = 0; | |
10826 | flag_enum = 0; | |
10827 | } | |
10828 | else if ((mask & SYMBOL_VALUE (sym)) != 0) | |
10829 | flag_enum = 0; | |
10830 | else | |
10831 | mask |= SYMBOL_VALUE (sym); | |
c906108c SS |
10832 | |
10833 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
10834 | { | |
10835 | fields = (struct field *) | |
10836 | xrealloc (fields, | |
10837 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 10838 | * sizeof (struct field)); |
c906108c SS |
10839 | } |
10840 | ||
3567439c | 10841 | FIELD_NAME (fields[num_fields]) = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 10842 | FIELD_TYPE (fields[num_fields]) = NULL; |
14e75d8e | 10843 | SET_FIELD_ENUMVAL (fields[num_fields], SYMBOL_VALUE (sym)); |
c906108c SS |
10844 | FIELD_BITSIZE (fields[num_fields]) = 0; |
10845 | ||
10846 | num_fields++; | |
10847 | } | |
10848 | } | |
10849 | ||
10850 | child_die = sibling_die (child_die); | |
10851 | } | |
10852 | ||
10853 | if (num_fields) | |
10854 | { | |
f792889a DJ |
10855 | TYPE_NFIELDS (this_type) = num_fields; |
10856 | TYPE_FIELDS (this_type) = (struct field *) | |
10857 | TYPE_ALLOC (this_type, sizeof (struct field) * num_fields); | |
10858 | memcpy (TYPE_FIELDS (this_type), fields, | |
c906108c | 10859 | sizeof (struct field) * num_fields); |
b8c9b27d | 10860 | xfree (fields); |
c906108c SS |
10861 | } |
10862 | if (unsigned_enum) | |
876cecd0 | 10863 | TYPE_UNSIGNED (this_type) = 1; |
cafec441 TT |
10864 | if (flag_enum) |
10865 | TYPE_FLAG_ENUM (this_type) = 1; | |
c906108c | 10866 | } |
134d01f1 | 10867 | |
6c83ed52 TT |
10868 | /* If we are reading an enum from a .debug_types unit, and the enum |
10869 | is a declaration, and the enum is not the signatured type in the | |
10870 | unit, then we do not want to add a symbol for it. Adding a | |
10871 | symbol would in some cases obscure the true definition of the | |
10872 | enum, giving users an incomplete type when the definition is | |
10873 | actually available. Note that we do not want to do this for all | |
10874 | enums which are just declarations, because C++0x allows forward | |
10875 | enum declarations. */ | |
3019eac3 | 10876 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
10877 | && die_is_declaration (die, cu)) |
10878 | { | |
52dc124a | 10879 | struct signatured_type *sig_type; |
6c83ed52 | 10880 | |
52dc124a | 10881 | sig_type |
6c83ed52 | 10882 | = lookup_signatured_type_at_offset (dwarf2_per_objfile->objfile, |
3019eac3 | 10883 | cu->per_cu->info_or_types_section, |
6c83ed52 | 10884 | cu->per_cu->offset); |
3019eac3 DE |
10885 | gdb_assert (sig_type->type_offset_in_section.sect_off != 0); |
10886 | if (sig_type->type_offset_in_section.sect_off != die->offset.sect_off) | |
6c83ed52 TT |
10887 | return; |
10888 | } | |
10889 | ||
f792889a | 10890 | new_symbol (die, this_type, cu); |
c906108c SS |
10891 | } |
10892 | ||
10893 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
10894 | the DIE's type field. For now, this only handles one dimensional | |
10895 | arrays. */ | |
10896 | ||
f792889a | 10897 | static struct type * |
e7c27a73 | 10898 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10899 | { |
e7c27a73 | 10900 | struct objfile *objfile = cu->objfile; |
c906108c | 10901 | struct die_info *child_die; |
7e314c57 | 10902 | struct type *type; |
c906108c SS |
10903 | struct type *element_type, *range_type, *index_type; |
10904 | struct type **range_types = NULL; | |
10905 | struct attribute *attr; | |
10906 | int ndim = 0; | |
10907 | struct cleanup *back_to; | |
39cbfefa | 10908 | char *name; |
c906108c | 10909 | |
e7c27a73 | 10910 | element_type = die_type (die, cu); |
c906108c | 10911 | |
7e314c57 JK |
10912 | /* The die_type call above may have already set the type for this DIE. */ |
10913 | type = get_die_type (die, cu); | |
10914 | if (type) | |
10915 | return type; | |
10916 | ||
c906108c SS |
10917 | /* Irix 6.2 native cc creates array types without children for |
10918 | arrays with unspecified length. */ | |
639d11d3 | 10919 | if (die->child == NULL) |
c906108c | 10920 | { |
46bf5051 | 10921 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 10922 | range_type = create_range_type (NULL, index_type, 0, -1); |
f792889a DJ |
10923 | type = create_array_type (NULL, element_type, range_type); |
10924 | return set_die_type (die, type, cu); | |
c906108c SS |
10925 | } |
10926 | ||
10927 | back_to = make_cleanup (null_cleanup, NULL); | |
639d11d3 | 10928 | child_die = die->child; |
c906108c SS |
10929 | while (child_die && child_die->tag) |
10930 | { | |
10931 | if (child_die->tag == DW_TAG_subrange_type) | |
10932 | { | |
f792889a | 10933 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 10934 | |
f792889a | 10935 | if (child_type != NULL) |
a02abb62 | 10936 | { |
0963b4bd MS |
10937 | /* The range type was succesfully read. Save it for the |
10938 | array type creation. */ | |
a02abb62 JB |
10939 | if ((ndim % DW_FIELD_ALLOC_CHUNK) == 0) |
10940 | { | |
10941 | range_types = (struct type **) | |
10942 | xrealloc (range_types, (ndim + DW_FIELD_ALLOC_CHUNK) | |
10943 | * sizeof (struct type *)); | |
10944 | if (ndim == 0) | |
10945 | make_cleanup (free_current_contents, &range_types); | |
10946 | } | |
f792889a | 10947 | range_types[ndim++] = child_type; |
a02abb62 | 10948 | } |
c906108c SS |
10949 | } |
10950 | child_die = sibling_die (child_die); | |
10951 | } | |
10952 | ||
10953 | /* Dwarf2 dimensions are output from left to right, create the | |
10954 | necessary array types in backwards order. */ | |
7ca2d3a3 | 10955 | |
c906108c | 10956 | type = element_type; |
7ca2d3a3 DL |
10957 | |
10958 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
10959 | { | |
10960 | int i = 0; | |
9a619af0 | 10961 | |
7ca2d3a3 DL |
10962 | while (i < ndim) |
10963 | type = create_array_type (NULL, type, range_types[i++]); | |
10964 | } | |
10965 | else | |
10966 | { | |
10967 | while (ndim-- > 0) | |
10968 | type = create_array_type (NULL, type, range_types[ndim]); | |
10969 | } | |
c906108c | 10970 | |
f5f8a009 EZ |
10971 | /* Understand Dwarf2 support for vector types (like they occur on |
10972 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
10973 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
10974 | custom vendor extension. The main difference between a regular | |
10975 | array and the vector variant is that vectors are passed by value | |
10976 | to functions. */ | |
e142c38c | 10977 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 | 10978 | if (attr) |
ea37ba09 | 10979 | make_vector_type (type); |
f5f8a009 | 10980 | |
dbc98a8b KW |
10981 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
10982 | implementation may choose to implement triple vectors using this | |
10983 | attribute. */ | |
10984 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
10985 | if (attr) | |
10986 | { | |
10987 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
10988 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
10989 | else | |
3e43a32a MS |
10990 | complaint (&symfile_complaints, |
10991 | _("DW_AT_byte_size for array type smaller " | |
10992 | "than the total size of elements")); | |
dbc98a8b KW |
10993 | } |
10994 | ||
39cbfefa DJ |
10995 | name = dwarf2_name (die, cu); |
10996 | if (name) | |
10997 | TYPE_NAME (type) = name; | |
6e70227d | 10998 | |
0963b4bd | 10999 | /* Install the type in the die. */ |
7e314c57 JK |
11000 | set_die_type (die, type, cu); |
11001 | ||
11002 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
11003 | set_descriptive_type (type, die, cu); |
11004 | ||
c906108c SS |
11005 | do_cleanups (back_to); |
11006 | ||
7e314c57 | 11007 | return type; |
c906108c SS |
11008 | } |
11009 | ||
7ca2d3a3 | 11010 | static enum dwarf_array_dim_ordering |
6e70227d | 11011 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
11012 | { |
11013 | struct attribute *attr; | |
11014 | ||
11015 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
11016 | ||
11017 | if (attr) return DW_SND (attr); | |
11018 | ||
0963b4bd MS |
11019 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
11020 | opposite order to the dwarf2 specification, but data is still | |
11021 | laid out as per normal fortran. | |
7ca2d3a3 | 11022 | |
0963b4bd MS |
11023 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
11024 | version checking. */ | |
7ca2d3a3 | 11025 | |
905e0470 PM |
11026 | if (cu->language == language_fortran |
11027 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
11028 | { |
11029 | return DW_ORD_row_major; | |
11030 | } | |
11031 | ||
6e70227d | 11032 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
11033 | { |
11034 | case array_column_major: | |
11035 | return DW_ORD_col_major; | |
11036 | case array_row_major: | |
11037 | default: | |
11038 | return DW_ORD_row_major; | |
11039 | }; | |
11040 | } | |
11041 | ||
72019c9c | 11042 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 11043 | the DIE's type field. */ |
72019c9c | 11044 | |
f792889a | 11045 | static struct type * |
72019c9c GM |
11046 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
11047 | { | |
7e314c57 JK |
11048 | struct type *domain_type, *set_type; |
11049 | struct attribute *attr; | |
f792889a | 11050 | |
7e314c57 JK |
11051 | domain_type = die_type (die, cu); |
11052 | ||
11053 | /* The die_type call above may have already set the type for this DIE. */ | |
11054 | set_type = get_die_type (die, cu); | |
11055 | if (set_type) | |
11056 | return set_type; | |
11057 | ||
11058 | set_type = create_set_type (NULL, domain_type); | |
11059 | ||
11060 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
d09039dd PM |
11061 | if (attr) |
11062 | TYPE_LENGTH (set_type) = DW_UNSND (attr); | |
7e314c57 | 11063 | |
f792889a | 11064 | return set_die_type (die, set_type, cu); |
72019c9c | 11065 | } |
7ca2d3a3 | 11066 | |
0971de02 TT |
11067 | /* A helper for read_common_block that creates a locexpr baton. |
11068 | SYM is the symbol which we are marking as computed. | |
11069 | COMMON_DIE is the DIE for the common block. | |
11070 | COMMON_LOC is the location expression attribute for the common | |
11071 | block itself. | |
11072 | MEMBER_LOC is the location expression attribute for the particular | |
11073 | member of the common block that we are processing. | |
11074 | CU is the CU from which the above come. */ | |
11075 | ||
11076 | static void | |
11077 | mark_common_block_symbol_computed (struct symbol *sym, | |
11078 | struct die_info *common_die, | |
11079 | struct attribute *common_loc, | |
11080 | struct attribute *member_loc, | |
11081 | struct dwarf2_cu *cu) | |
11082 | { | |
11083 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
11084 | struct dwarf2_locexpr_baton *baton; | |
11085 | gdb_byte *ptr; | |
11086 | unsigned int cu_off; | |
11087 | enum bfd_endian byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
11088 | LONGEST offset = 0; | |
11089 | ||
11090 | gdb_assert (common_loc && member_loc); | |
11091 | gdb_assert (attr_form_is_block (common_loc)); | |
11092 | gdb_assert (attr_form_is_block (member_loc) | |
11093 | || attr_form_is_constant (member_loc)); | |
11094 | ||
11095 | baton = obstack_alloc (&objfile->objfile_obstack, | |
11096 | sizeof (struct dwarf2_locexpr_baton)); | |
11097 | baton->per_cu = cu->per_cu; | |
11098 | gdb_assert (baton->per_cu); | |
11099 | ||
11100 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
11101 | ||
11102 | if (attr_form_is_constant (member_loc)) | |
11103 | { | |
11104 | offset = dwarf2_get_attr_constant_value (member_loc, 0); | |
11105 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; | |
11106 | } | |
11107 | else | |
11108 | baton->size += DW_BLOCK (member_loc)->size; | |
11109 | ||
11110 | ptr = obstack_alloc (&objfile->objfile_obstack, baton->size); | |
11111 | baton->data = ptr; | |
11112 | ||
11113 | *ptr++ = DW_OP_call4; | |
11114 | cu_off = common_die->offset.sect_off - cu->per_cu->offset.sect_off; | |
11115 | store_unsigned_integer (ptr, 4, byte_order, cu_off); | |
11116 | ptr += 4; | |
11117 | ||
11118 | if (attr_form_is_constant (member_loc)) | |
11119 | { | |
11120 | *ptr++ = DW_OP_addr; | |
11121 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
11122 | ptr += cu->header.addr_size; | |
11123 | } | |
11124 | else | |
11125 | { | |
11126 | /* We have to copy the data here, because DW_OP_call4 will only | |
11127 | use a DW_AT_location attribute. */ | |
11128 | memcpy (ptr, DW_BLOCK (member_loc)->data, DW_BLOCK (member_loc)->size); | |
11129 | ptr += DW_BLOCK (member_loc)->size; | |
11130 | } | |
11131 | ||
11132 | *ptr++ = DW_OP_plus; | |
11133 | gdb_assert (ptr - baton->data == baton->size); | |
11134 | ||
11135 | SYMBOL_COMPUTED_OPS (sym) = &dwarf2_locexpr_funcs; | |
11136 | SYMBOL_LOCATION_BATON (sym) = baton; | |
11137 | SYMBOL_CLASS (sym) = LOC_COMPUTED; | |
11138 | } | |
11139 | ||
4357ac6c TT |
11140 | /* Create appropriate locally-scoped variables for all the |
11141 | DW_TAG_common_block entries. Also create a struct common_block | |
11142 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
11143 | is used to sepate the common blocks name namespace from regular | |
11144 | variable names. */ | |
c906108c SS |
11145 | |
11146 | static void | |
e7c27a73 | 11147 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11148 | { |
0971de02 TT |
11149 | struct attribute *attr; |
11150 | ||
11151 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
11152 | if (attr) | |
11153 | { | |
11154 | /* Support the .debug_loc offsets. */ | |
11155 | if (attr_form_is_block (attr)) | |
11156 | { | |
11157 | /* Ok. */ | |
11158 | } | |
11159 | else if (attr_form_is_section_offset (attr)) | |
11160 | { | |
11161 | dwarf2_complex_location_expr_complaint (); | |
11162 | attr = NULL; | |
11163 | } | |
11164 | else | |
11165 | { | |
11166 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
11167 | "common block member"); | |
11168 | attr = NULL; | |
11169 | } | |
11170 | } | |
11171 | ||
639d11d3 | 11172 | if (die->child != NULL) |
c906108c | 11173 | { |
4357ac6c TT |
11174 | struct objfile *objfile = cu->objfile; |
11175 | struct die_info *child_die; | |
11176 | size_t n_entries = 0, size; | |
11177 | struct common_block *common_block; | |
11178 | struct symbol *sym; | |
74ac6d43 | 11179 | |
4357ac6c TT |
11180 | for (child_die = die->child; |
11181 | child_die && child_die->tag; | |
11182 | child_die = sibling_die (child_die)) | |
11183 | ++n_entries; | |
11184 | ||
11185 | size = (sizeof (struct common_block) | |
11186 | + (n_entries - 1) * sizeof (struct symbol *)); | |
11187 | common_block = obstack_alloc (&objfile->objfile_obstack, size); | |
11188 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); | |
11189 | common_block->n_entries = 0; | |
11190 | ||
11191 | for (child_die = die->child; | |
11192 | child_die && child_die->tag; | |
11193 | child_die = sibling_die (child_die)) | |
11194 | { | |
11195 | /* Create the symbol in the DW_TAG_common_block block in the current | |
11196 | symbol scope. */ | |
e7c27a73 | 11197 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
11198 | if (sym != NULL) |
11199 | { | |
11200 | struct attribute *member_loc; | |
11201 | ||
11202 | common_block->contents[common_block->n_entries++] = sym; | |
11203 | ||
11204 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
11205 | cu); | |
11206 | if (member_loc) | |
11207 | { | |
11208 | /* GDB has handled this for a long time, but it is | |
11209 | not specified by DWARF. It seems to have been | |
11210 | emitted by gfortran at least as recently as: | |
11211 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
11212 | complaint (&symfile_complaints, | |
11213 | _("Variable in common block has " | |
11214 | "DW_AT_data_member_location " | |
11215 | "- DIE at 0x%x [in module %s]"), | |
11216 | child_die->offset.sect_off, cu->objfile->name); | |
11217 | ||
11218 | if (attr_form_is_section_offset (member_loc)) | |
11219 | dwarf2_complex_location_expr_complaint (); | |
11220 | else if (attr_form_is_constant (member_loc) | |
11221 | || attr_form_is_block (member_loc)) | |
11222 | { | |
11223 | if (attr) | |
11224 | mark_common_block_symbol_computed (sym, die, attr, | |
11225 | member_loc, cu); | |
11226 | } | |
11227 | else | |
11228 | dwarf2_complex_location_expr_complaint (); | |
11229 | } | |
11230 | } | |
c906108c | 11231 | } |
4357ac6c TT |
11232 | |
11233 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
11234 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
11235 | } |
11236 | } | |
11237 | ||
0114d602 | 11238 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 11239 | |
0114d602 DJ |
11240 | static struct type * |
11241 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 11242 | { |
e7c27a73 | 11243 | struct objfile *objfile = cu->objfile; |
0114d602 | 11244 | const char *previous_prefix, *name; |
9219021c | 11245 | int is_anonymous; |
0114d602 DJ |
11246 | struct type *type; |
11247 | ||
11248 | /* For extensions, reuse the type of the original namespace. */ | |
11249 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
11250 | { | |
11251 | struct die_info *ext_die; | |
11252 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 11253 | |
0114d602 DJ |
11254 | ext_die = dwarf2_extension (die, &ext_cu); |
11255 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
11256 | |
11257 | /* EXT_CU may not be the same as CU. | |
11258 | Ensure TYPE is recorded in CU's type_hash table. */ | |
0114d602 DJ |
11259 | return set_die_type (die, type, cu); |
11260 | } | |
9219021c | 11261 | |
e142c38c | 11262 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
11263 | |
11264 | /* Now build the name of the current namespace. */ | |
11265 | ||
0114d602 DJ |
11266 | previous_prefix = determine_prefix (die, cu); |
11267 | if (previous_prefix[0] != '\0') | |
11268 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 11269 | previous_prefix, name, 0, cu); |
0114d602 DJ |
11270 | |
11271 | /* Create the type. */ | |
11272 | type = init_type (TYPE_CODE_NAMESPACE, 0, 0, NULL, | |
11273 | objfile); | |
11274 | TYPE_NAME (type) = (char *) name; | |
11275 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
11276 | ||
60531b24 | 11277 | return set_die_type (die, type, cu); |
0114d602 DJ |
11278 | } |
11279 | ||
11280 | /* Read a C++ namespace. */ | |
11281 | ||
11282 | static void | |
11283 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
11284 | { | |
11285 | struct objfile *objfile = cu->objfile; | |
0114d602 | 11286 | int is_anonymous; |
9219021c | 11287 | |
5c4e30ca DC |
11288 | /* Add a symbol associated to this if we haven't seen the namespace |
11289 | before. Also, add a using directive if it's an anonymous | |
11290 | namespace. */ | |
9219021c | 11291 | |
f2f0e013 | 11292 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
11293 | { |
11294 | struct type *type; | |
11295 | ||
0114d602 | 11296 | type = read_type_die (die, cu); |
e7c27a73 | 11297 | new_symbol (die, type, cu); |
5c4e30ca | 11298 | |
e8e80198 | 11299 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 11300 | if (is_anonymous) |
0114d602 DJ |
11301 | { |
11302 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 11303 | |
c0cc3a76 | 11304 | cp_add_using_directive (previous_prefix, TYPE_NAME (type), NULL, |
32019081 | 11305 | NULL, NULL, &objfile->objfile_obstack); |
0114d602 | 11306 | } |
5c4e30ca | 11307 | } |
9219021c | 11308 | |
639d11d3 | 11309 | if (die->child != NULL) |
d9fa45fe | 11310 | { |
639d11d3 | 11311 | struct die_info *child_die = die->child; |
6e70227d | 11312 | |
d9fa45fe DC |
11313 | while (child_die && child_die->tag) |
11314 | { | |
e7c27a73 | 11315 | process_die (child_die, cu); |
d9fa45fe DC |
11316 | child_die = sibling_die (child_die); |
11317 | } | |
11318 | } | |
38d518c9 EZ |
11319 | } |
11320 | ||
f55ee35c JK |
11321 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
11322 | imported module. Still we need that type as local Fortran "use ... only" | |
11323 | declaration imports depend on the created type in determine_prefix. */ | |
11324 | ||
11325 | static struct type * | |
11326 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
11327 | { | |
11328 | struct objfile *objfile = cu->objfile; | |
11329 | char *module_name; | |
11330 | struct type *type; | |
11331 | ||
11332 | module_name = dwarf2_name (die, cu); | |
11333 | if (!module_name) | |
3e43a32a MS |
11334 | complaint (&symfile_complaints, |
11335 | _("DW_TAG_module has no name, offset 0x%x"), | |
b64f50a1 | 11336 | die->offset.sect_off); |
f55ee35c JK |
11337 | type = init_type (TYPE_CODE_MODULE, 0, 0, module_name, objfile); |
11338 | ||
11339 | /* determine_prefix uses TYPE_TAG_NAME. */ | |
11340 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
11341 | ||
11342 | return set_die_type (die, type, cu); | |
11343 | } | |
11344 | ||
5d7cb8df JK |
11345 | /* Read a Fortran module. */ |
11346 | ||
11347 | static void | |
11348 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
11349 | { | |
11350 | struct die_info *child_die = die->child; | |
11351 | ||
5d7cb8df JK |
11352 | while (child_die && child_die->tag) |
11353 | { | |
11354 | process_die (child_die, cu); | |
11355 | child_die = sibling_die (child_die); | |
11356 | } | |
11357 | } | |
11358 | ||
38d518c9 EZ |
11359 | /* Return the name of the namespace represented by DIE. Set |
11360 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
11361 | namespace. */ | |
11362 | ||
11363 | static const char * | |
e142c38c | 11364 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
11365 | { |
11366 | struct die_info *current_die; | |
11367 | const char *name = NULL; | |
11368 | ||
11369 | /* Loop through the extensions until we find a name. */ | |
11370 | ||
11371 | for (current_die = die; | |
11372 | current_die != NULL; | |
f2f0e013 | 11373 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 11374 | { |
e142c38c | 11375 | name = dwarf2_name (current_die, cu); |
38d518c9 EZ |
11376 | if (name != NULL) |
11377 | break; | |
11378 | } | |
11379 | ||
11380 | /* Is it an anonymous namespace? */ | |
11381 | ||
11382 | *is_anonymous = (name == NULL); | |
11383 | if (*is_anonymous) | |
2b1dbab0 | 11384 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
11385 | |
11386 | return name; | |
d9fa45fe DC |
11387 | } |
11388 | ||
c906108c SS |
11389 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
11390 | the user defined type vector. */ | |
11391 | ||
f792889a | 11392 | static struct type * |
e7c27a73 | 11393 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11394 | { |
5e2b427d | 11395 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); |
e7c27a73 | 11396 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 11397 | struct type *type; |
8b2dbe47 KB |
11398 | struct attribute *attr_byte_size; |
11399 | struct attribute *attr_address_class; | |
11400 | int byte_size, addr_class; | |
7e314c57 JK |
11401 | struct type *target_type; |
11402 | ||
11403 | target_type = die_type (die, cu); | |
c906108c | 11404 | |
7e314c57 JK |
11405 | /* The die_type call above may have already set the type for this DIE. */ |
11406 | type = get_die_type (die, cu); | |
11407 | if (type) | |
11408 | return type; | |
11409 | ||
11410 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 11411 | |
e142c38c | 11412 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
11413 | if (attr_byte_size) |
11414 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 11415 | else |
8b2dbe47 KB |
11416 | byte_size = cu_header->addr_size; |
11417 | ||
e142c38c | 11418 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
11419 | if (attr_address_class) |
11420 | addr_class = DW_UNSND (attr_address_class); | |
11421 | else | |
11422 | addr_class = DW_ADDR_none; | |
11423 | ||
11424 | /* If the pointer size or address class is different than the | |
11425 | default, create a type variant marked as such and set the | |
11426 | length accordingly. */ | |
11427 | if (TYPE_LENGTH (type) != byte_size || addr_class != DW_ADDR_none) | |
c906108c | 11428 | { |
5e2b427d | 11429 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
11430 | { |
11431 | int type_flags; | |
11432 | ||
849957d9 | 11433 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 11434 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
11435 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
11436 | == 0); | |
8b2dbe47 KB |
11437 | type = make_type_with_address_space (type, type_flags); |
11438 | } | |
11439 | else if (TYPE_LENGTH (type) != byte_size) | |
11440 | { | |
3e43a32a MS |
11441 | complaint (&symfile_complaints, |
11442 | _("invalid pointer size %d"), byte_size); | |
8b2dbe47 | 11443 | } |
6e70227d | 11444 | else |
9a619af0 MS |
11445 | { |
11446 | /* Should we also complain about unhandled address classes? */ | |
11447 | } | |
c906108c | 11448 | } |
8b2dbe47 KB |
11449 | |
11450 | TYPE_LENGTH (type) = byte_size; | |
f792889a | 11451 | return set_die_type (die, type, cu); |
c906108c SS |
11452 | } |
11453 | ||
11454 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
11455 | the user defined type vector. */ | |
11456 | ||
f792889a | 11457 | static struct type * |
e7c27a73 | 11458 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
11459 | { |
11460 | struct type *type; | |
11461 | struct type *to_type; | |
11462 | struct type *domain; | |
11463 | ||
e7c27a73 DJ |
11464 | to_type = die_type (die, cu); |
11465 | domain = die_containing_type (die, cu); | |
0d5de010 | 11466 | |
7e314c57 JK |
11467 | /* The calls above may have already set the type for this DIE. */ |
11468 | type = get_die_type (die, cu); | |
11469 | if (type) | |
11470 | return type; | |
11471 | ||
0d5de010 DJ |
11472 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) |
11473 | type = lookup_methodptr_type (to_type); | |
11474 | else | |
11475 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 11476 | |
f792889a | 11477 | return set_die_type (die, type, cu); |
c906108c SS |
11478 | } |
11479 | ||
11480 | /* Extract all information from a DW_TAG_reference_type DIE and add to | |
11481 | the user defined type vector. */ | |
11482 | ||
f792889a | 11483 | static struct type * |
e7c27a73 | 11484 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11485 | { |
e7c27a73 | 11486 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 11487 | struct type *type, *target_type; |
c906108c SS |
11488 | struct attribute *attr; |
11489 | ||
7e314c57 JK |
11490 | target_type = die_type (die, cu); |
11491 | ||
11492 | /* The die_type call above may have already set the type for this DIE. */ | |
11493 | type = get_die_type (die, cu); | |
11494 | if (type) | |
11495 | return type; | |
11496 | ||
11497 | type = lookup_reference_type (target_type); | |
e142c38c | 11498 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
11499 | if (attr) |
11500 | { | |
11501 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
11502 | } | |
11503 | else | |
11504 | { | |
107d2387 | 11505 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 11506 | } |
f792889a | 11507 | return set_die_type (die, type, cu); |
c906108c SS |
11508 | } |
11509 | ||
f792889a | 11510 | static struct type * |
e7c27a73 | 11511 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11512 | { |
f792889a | 11513 | struct type *base_type, *cv_type; |
c906108c | 11514 | |
e7c27a73 | 11515 | base_type = die_type (die, cu); |
7e314c57 JK |
11516 | |
11517 | /* The die_type call above may have already set the type for this DIE. */ | |
11518 | cv_type = get_die_type (die, cu); | |
11519 | if (cv_type) | |
11520 | return cv_type; | |
11521 | ||
2f608a3a KW |
11522 | /* In case the const qualifier is applied to an array type, the element type |
11523 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
11524 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
11525 | { | |
11526 | struct type *el_type, *inner_array; | |
11527 | ||
11528 | base_type = copy_type (base_type); | |
11529 | inner_array = base_type; | |
11530 | ||
11531 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) | |
11532 | { | |
11533 | TYPE_TARGET_TYPE (inner_array) = | |
11534 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
11535 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
11536 | } | |
11537 | ||
11538 | el_type = TYPE_TARGET_TYPE (inner_array); | |
11539 | TYPE_TARGET_TYPE (inner_array) = | |
11540 | make_cv_type (1, TYPE_VOLATILE (el_type), el_type, NULL); | |
11541 | ||
11542 | return set_die_type (die, base_type, cu); | |
11543 | } | |
11544 | ||
f792889a DJ |
11545 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
11546 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
11547 | } |
11548 | ||
f792889a | 11549 | static struct type * |
e7c27a73 | 11550 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11551 | { |
f792889a | 11552 | struct type *base_type, *cv_type; |
c906108c | 11553 | |
e7c27a73 | 11554 | base_type = die_type (die, cu); |
7e314c57 JK |
11555 | |
11556 | /* The die_type call above may have already set the type for this DIE. */ | |
11557 | cv_type = get_die_type (die, cu); | |
11558 | if (cv_type) | |
11559 | return cv_type; | |
11560 | ||
f792889a DJ |
11561 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
11562 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
11563 | } |
11564 | ||
11565 | /* Extract all information from a DW_TAG_string_type DIE and add to | |
11566 | the user defined type vector. It isn't really a user defined type, | |
11567 | but it behaves like one, with other DIE's using an AT_user_def_type | |
11568 | attribute to reference it. */ | |
11569 | ||
f792889a | 11570 | static struct type * |
e7c27a73 | 11571 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11572 | { |
e7c27a73 | 11573 | struct objfile *objfile = cu->objfile; |
3b7538c0 | 11574 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
11575 | struct type *type, *range_type, *index_type, *char_type; |
11576 | struct attribute *attr; | |
11577 | unsigned int length; | |
11578 | ||
e142c38c | 11579 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
11580 | if (attr) |
11581 | { | |
11582 | length = DW_UNSND (attr); | |
11583 | } | |
11584 | else | |
11585 | { | |
0963b4bd | 11586 | /* Check for the DW_AT_byte_size attribute. */ |
e142c38c | 11587 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
11588 | if (attr) |
11589 | { | |
11590 | length = DW_UNSND (attr); | |
11591 | } | |
11592 | else | |
11593 | { | |
11594 | length = 1; | |
11595 | } | |
c906108c | 11596 | } |
6ccb9162 | 11597 | |
46bf5051 | 11598 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 11599 | range_type = create_range_type (NULL, index_type, 1, length); |
3b7538c0 UW |
11600 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
11601 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 11602 | |
f792889a | 11603 | return set_die_type (die, type, cu); |
c906108c SS |
11604 | } |
11605 | ||
11606 | /* Handle DIES due to C code like: | |
11607 | ||
11608 | struct foo | |
c5aa993b JM |
11609 | { |
11610 | int (*funcp)(int a, long l); | |
11611 | int b; | |
11612 | }; | |
c906108c | 11613 | |
0963b4bd | 11614 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 11615 | |
f792889a | 11616 | static struct type * |
e7c27a73 | 11617 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11618 | { |
bb5ed363 | 11619 | struct objfile *objfile = cu->objfile; |
0963b4bd MS |
11620 | struct type *type; /* Type that this function returns. */ |
11621 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
11622 | struct attribute *attr; |
11623 | ||
e7c27a73 | 11624 | type = die_type (die, cu); |
7e314c57 JK |
11625 | |
11626 | /* The die_type call above may have already set the type for this DIE. */ | |
11627 | ftype = get_die_type (die, cu); | |
11628 | if (ftype) | |
11629 | return ftype; | |
11630 | ||
0c8b41f1 | 11631 | ftype = lookup_function_type (type); |
c906108c | 11632 | |
5b8101ae | 11633 | /* All functions in C++, Pascal and Java have prototypes. */ |
e142c38c | 11634 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); |
c906108c | 11635 | if ((attr && (DW_UNSND (attr) != 0)) |
987504bb | 11636 | || cu->language == language_cplus |
5b8101ae PM |
11637 | || cu->language == language_java |
11638 | || cu->language == language_pascal) | |
876cecd0 | 11639 | TYPE_PROTOTYPED (ftype) = 1; |
a6c727b2 DJ |
11640 | else if (producer_is_realview (cu->producer)) |
11641 | /* RealView does not emit DW_AT_prototyped. We can not | |
11642 | distinguish prototyped and unprototyped functions; default to | |
11643 | prototyped, since that is more common in modern code (and | |
11644 | RealView warns about unprototyped functions). */ | |
11645 | TYPE_PROTOTYPED (ftype) = 1; | |
c906108c | 11646 | |
c055b101 CV |
11647 | /* Store the calling convention in the type if it's available in |
11648 | the subroutine die. Otherwise set the calling convention to | |
11649 | the default value DW_CC_normal. */ | |
11650 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
54fcddd0 UW |
11651 | if (attr) |
11652 | TYPE_CALLING_CONVENTION (ftype) = DW_UNSND (attr); | |
11653 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) | |
11654 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
11655 | else | |
11656 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 GM |
11657 | |
11658 | /* We need to add the subroutine type to the die immediately so | |
11659 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 11660 | declared as the same subroutine type. */ |
76c10ea2 | 11661 | set_die_type (die, ftype, cu); |
6e70227d | 11662 | |
639d11d3 | 11663 | if (die->child != NULL) |
c906108c | 11664 | { |
bb5ed363 | 11665 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 11666 | struct die_info *child_die; |
8072405b | 11667 | int nparams, iparams; |
c906108c SS |
11668 | |
11669 | /* Count the number of parameters. | |
11670 | FIXME: GDB currently ignores vararg functions, but knows about | |
11671 | vararg member functions. */ | |
8072405b | 11672 | nparams = 0; |
639d11d3 | 11673 | child_die = die->child; |
c906108c SS |
11674 | while (child_die && child_die->tag) |
11675 | { | |
11676 | if (child_die->tag == DW_TAG_formal_parameter) | |
11677 | nparams++; | |
11678 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 11679 | TYPE_VARARGS (ftype) = 1; |
c906108c SS |
11680 | child_die = sibling_die (child_die); |
11681 | } | |
11682 | ||
11683 | /* Allocate storage for parameters and fill them in. */ | |
11684 | TYPE_NFIELDS (ftype) = nparams; | |
11685 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 11686 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 11687 | |
8072405b JK |
11688 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
11689 | even if we error out during the parameters reading below. */ | |
11690 | for (iparams = 0; iparams < nparams; iparams++) | |
11691 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
11692 | ||
11693 | iparams = 0; | |
639d11d3 | 11694 | child_die = die->child; |
c906108c SS |
11695 | while (child_die && child_die->tag) |
11696 | { | |
11697 | if (child_die->tag == DW_TAG_formal_parameter) | |
11698 | { | |
3ce3b1ba PA |
11699 | struct type *arg_type; |
11700 | ||
11701 | /* DWARF version 2 has no clean way to discern C++ | |
11702 | static and non-static member functions. G++ helps | |
11703 | GDB by marking the first parameter for non-static | |
11704 | member functions (which is the this pointer) as | |
11705 | artificial. We pass this information to | |
11706 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
11707 | ||
11708 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
11709 | 4.5 does not yet generate. */ | |
e142c38c | 11710 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
11711 | if (attr) |
11712 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
11713 | else | |
418835cc KS |
11714 | { |
11715 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; | |
11716 | ||
11717 | /* GCC/43521: In java, the formal parameter | |
11718 | "this" is sometimes not marked with DW_AT_artificial. */ | |
11719 | if (cu->language == language_java) | |
11720 | { | |
11721 | const char *name = dwarf2_name (child_die, cu); | |
9a619af0 | 11722 | |
418835cc KS |
11723 | if (name && !strcmp (name, "this")) |
11724 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 1; | |
11725 | } | |
11726 | } | |
3ce3b1ba PA |
11727 | arg_type = die_type (child_die, cu); |
11728 | ||
11729 | /* RealView does not mark THIS as const, which the testsuite | |
11730 | expects. GCC marks THIS as const in method definitions, | |
11731 | but not in the class specifications (GCC PR 43053). */ | |
11732 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
11733 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
11734 | { | |
11735 | int is_this = 0; | |
11736 | struct dwarf2_cu *arg_cu = cu; | |
11737 | const char *name = dwarf2_name (child_die, cu); | |
11738 | ||
11739 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
11740 | if (attr) | |
11741 | { | |
11742 | /* If the compiler emits this, use it. */ | |
11743 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
11744 | is_this = 1; | |
11745 | } | |
11746 | else if (name && strcmp (name, "this") == 0) | |
11747 | /* Function definitions will have the argument names. */ | |
11748 | is_this = 1; | |
11749 | else if (name == NULL && iparams == 0) | |
11750 | /* Declarations may not have the names, so like | |
11751 | elsewhere in GDB, assume an artificial first | |
11752 | argument is "this". */ | |
11753 | is_this = 1; | |
11754 | ||
11755 | if (is_this) | |
11756 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
11757 | arg_type, 0); | |
11758 | } | |
11759 | ||
11760 | TYPE_FIELD_TYPE (ftype, iparams) = arg_type; | |
c906108c SS |
11761 | iparams++; |
11762 | } | |
11763 | child_die = sibling_die (child_die); | |
11764 | } | |
11765 | } | |
11766 | ||
76c10ea2 | 11767 | return ftype; |
c906108c SS |
11768 | } |
11769 | ||
f792889a | 11770 | static struct type * |
e7c27a73 | 11771 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11772 | { |
e7c27a73 | 11773 | struct objfile *objfile = cu->objfile; |
0114d602 | 11774 | const char *name = NULL; |
3c8e0968 | 11775 | struct type *this_type, *target_type; |
c906108c | 11776 | |
94af9270 | 11777 | name = dwarf2_full_name (NULL, die, cu); |
f792889a | 11778 | this_type = init_type (TYPE_CODE_TYPEDEF, 0, |
0114d602 DJ |
11779 | TYPE_FLAG_TARGET_STUB, NULL, objfile); |
11780 | TYPE_NAME (this_type) = (char *) name; | |
f792889a | 11781 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
11782 | target_type = die_type (die, cu); |
11783 | if (target_type != this_type) | |
11784 | TYPE_TARGET_TYPE (this_type) = target_type; | |
11785 | else | |
11786 | { | |
11787 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
11788 | spec and cause infinite loops in GDB. */ | |
11789 | complaint (&symfile_complaints, | |
11790 | _("Self-referential DW_TAG_typedef " | |
11791 | "- DIE at 0x%x [in module %s]"), | |
b64f50a1 | 11792 | die->offset.sect_off, objfile->name); |
3c8e0968 DE |
11793 | TYPE_TARGET_TYPE (this_type) = NULL; |
11794 | } | |
f792889a | 11795 | return this_type; |
c906108c SS |
11796 | } |
11797 | ||
11798 | /* Find a representation of a given base type and install | |
11799 | it in the TYPE field of the die. */ | |
11800 | ||
f792889a | 11801 | static struct type * |
e7c27a73 | 11802 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11803 | { |
e7c27a73 | 11804 | struct objfile *objfile = cu->objfile; |
c906108c SS |
11805 | struct type *type; |
11806 | struct attribute *attr; | |
11807 | int encoding = 0, size = 0; | |
39cbfefa | 11808 | char *name; |
6ccb9162 UW |
11809 | enum type_code code = TYPE_CODE_INT; |
11810 | int type_flags = 0; | |
11811 | struct type *target_type = NULL; | |
c906108c | 11812 | |
e142c38c | 11813 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
11814 | if (attr) |
11815 | { | |
11816 | encoding = DW_UNSND (attr); | |
11817 | } | |
e142c38c | 11818 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
11819 | if (attr) |
11820 | { | |
11821 | size = DW_UNSND (attr); | |
11822 | } | |
39cbfefa | 11823 | name = dwarf2_name (die, cu); |
6ccb9162 | 11824 | if (!name) |
c906108c | 11825 | { |
6ccb9162 UW |
11826 | complaint (&symfile_complaints, |
11827 | _("DW_AT_name missing from DW_TAG_base_type")); | |
c906108c | 11828 | } |
6ccb9162 UW |
11829 | |
11830 | switch (encoding) | |
c906108c | 11831 | { |
6ccb9162 UW |
11832 | case DW_ATE_address: |
11833 | /* Turn DW_ATE_address into a void * pointer. */ | |
11834 | code = TYPE_CODE_PTR; | |
11835 | type_flags |= TYPE_FLAG_UNSIGNED; | |
11836 | target_type = init_type (TYPE_CODE_VOID, 1, 0, NULL, objfile); | |
11837 | break; | |
11838 | case DW_ATE_boolean: | |
11839 | code = TYPE_CODE_BOOL; | |
11840 | type_flags |= TYPE_FLAG_UNSIGNED; | |
11841 | break; | |
11842 | case DW_ATE_complex_float: | |
11843 | code = TYPE_CODE_COMPLEX; | |
11844 | target_type = init_type (TYPE_CODE_FLT, size / 2, 0, NULL, objfile); | |
11845 | break; | |
11846 | case DW_ATE_decimal_float: | |
11847 | code = TYPE_CODE_DECFLOAT; | |
11848 | break; | |
11849 | case DW_ATE_float: | |
11850 | code = TYPE_CODE_FLT; | |
11851 | break; | |
11852 | case DW_ATE_signed: | |
11853 | break; | |
11854 | case DW_ATE_unsigned: | |
11855 | type_flags |= TYPE_FLAG_UNSIGNED; | |
3b2b8fea TT |
11856 | if (cu->language == language_fortran |
11857 | && name | |
11858 | && strncmp (name, "character(", sizeof ("character(") - 1) == 0) | |
11859 | code = TYPE_CODE_CHAR; | |
6ccb9162 UW |
11860 | break; |
11861 | case DW_ATE_signed_char: | |
6e70227d | 11862 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
11863 | || cu->language == language_pascal |
11864 | || cu->language == language_fortran) | |
6ccb9162 UW |
11865 | code = TYPE_CODE_CHAR; |
11866 | break; | |
11867 | case DW_ATE_unsigned_char: | |
868a0084 | 11868 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
11869 | || cu->language == language_pascal |
11870 | || cu->language == language_fortran) | |
6ccb9162 UW |
11871 | code = TYPE_CODE_CHAR; |
11872 | type_flags |= TYPE_FLAG_UNSIGNED; | |
11873 | break; | |
75079b2b TT |
11874 | case DW_ATE_UTF: |
11875 | /* We just treat this as an integer and then recognize the | |
11876 | type by name elsewhere. */ | |
11877 | break; | |
11878 | ||
6ccb9162 UW |
11879 | default: |
11880 | complaint (&symfile_complaints, _("unsupported DW_AT_encoding: '%s'"), | |
11881 | dwarf_type_encoding_name (encoding)); | |
11882 | break; | |
c906108c | 11883 | } |
6ccb9162 | 11884 | |
0114d602 DJ |
11885 | type = init_type (code, size, type_flags, NULL, objfile); |
11886 | TYPE_NAME (type) = name; | |
6ccb9162 UW |
11887 | TYPE_TARGET_TYPE (type) = target_type; |
11888 | ||
0114d602 | 11889 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 11890 | TYPE_NOSIGN (type) = 1; |
0114d602 | 11891 | |
f792889a | 11892 | return set_die_type (die, type, cu); |
c906108c SS |
11893 | } |
11894 | ||
a02abb62 JB |
11895 | /* Read the given DW_AT_subrange DIE. */ |
11896 | ||
f792889a | 11897 | static struct type * |
a02abb62 JB |
11898 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
11899 | { | |
11900 | struct type *base_type; | |
11901 | struct type *range_type; | |
11902 | struct attribute *attr; | |
4fae6e18 JK |
11903 | LONGEST low, high; |
11904 | int low_default_is_valid; | |
39cbfefa | 11905 | char *name; |
43bbcdc2 | 11906 | LONGEST negative_mask; |
e77813c8 | 11907 | |
a02abb62 | 11908 | base_type = die_type (die, cu); |
953ac07e JK |
11909 | /* Preserve BASE_TYPE's original type, just set its LENGTH. */ |
11910 | check_typedef (base_type); | |
a02abb62 | 11911 | |
7e314c57 JK |
11912 | /* The die_type call above may have already set the type for this DIE. */ |
11913 | range_type = get_die_type (die, cu); | |
11914 | if (range_type) | |
11915 | return range_type; | |
11916 | ||
4fae6e18 JK |
11917 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
11918 | omitting DW_AT_lower_bound. */ | |
11919 | switch (cu->language) | |
6e70227d | 11920 | { |
4fae6e18 JK |
11921 | case language_c: |
11922 | case language_cplus: | |
11923 | low = 0; | |
11924 | low_default_is_valid = 1; | |
11925 | break; | |
11926 | case language_fortran: | |
11927 | low = 1; | |
11928 | low_default_is_valid = 1; | |
11929 | break; | |
11930 | case language_d: | |
11931 | case language_java: | |
11932 | case language_objc: | |
11933 | low = 0; | |
11934 | low_default_is_valid = (cu->header.version >= 4); | |
11935 | break; | |
11936 | case language_ada: | |
11937 | case language_m2: | |
11938 | case language_pascal: | |
a02abb62 | 11939 | low = 1; |
4fae6e18 JK |
11940 | low_default_is_valid = (cu->header.version >= 4); |
11941 | break; | |
11942 | default: | |
11943 | low = 0; | |
11944 | low_default_is_valid = 0; | |
11945 | break; | |
a02abb62 JB |
11946 | } |
11947 | ||
dd5e6932 DJ |
11948 | /* FIXME: For variable sized arrays either of these could be |
11949 | a variable rather than a constant value. We'll allow it, | |
11950 | but we don't know how to handle it. */ | |
e142c38c | 11951 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 | 11952 | if (attr) |
4fae6e18 JK |
11953 | low = dwarf2_get_attr_constant_value (attr, low); |
11954 | else if (!low_default_is_valid) | |
11955 | complaint (&symfile_complaints, _("Missing DW_AT_lower_bound " | |
11956 | "- DIE at 0x%x [in module %s]"), | |
11957 | die->offset.sect_off, cu->objfile->name); | |
a02abb62 | 11958 | |
e142c38c | 11959 | attr = dwarf2_attr (die, DW_AT_upper_bound, cu); |
a02abb62 | 11960 | if (attr) |
6e70227d | 11961 | { |
d48323d8 | 11962 | if (attr_form_is_block (attr) || is_ref_attr (attr)) |
a02abb62 JB |
11963 | { |
11964 | /* GCC encodes arrays with unspecified or dynamic length | |
e77813c8 | 11965 | with a DW_FORM_block1 attribute or a reference attribute. |
a02abb62 JB |
11966 | FIXME: GDB does not yet know how to handle dynamic |
11967 | arrays properly, treat them as arrays with unspecified | |
11968 | length for now. | |
11969 | ||
11970 | FIXME: jimb/2003-09-22: GDB does not really know | |
11971 | how to handle arrays of unspecified length | |
11972 | either; we just represent them as zero-length | |
11973 | arrays. Choose an appropriate upper bound given | |
11974 | the lower bound we've computed above. */ | |
11975 | high = low - 1; | |
11976 | } | |
11977 | else | |
11978 | high = dwarf2_get_attr_constant_value (attr, 1); | |
11979 | } | |
e77813c8 PM |
11980 | else |
11981 | { | |
11982 | attr = dwarf2_attr (die, DW_AT_count, cu); | |
11983 | if (attr) | |
11984 | { | |
11985 | int count = dwarf2_get_attr_constant_value (attr, 1); | |
11986 | high = low + count - 1; | |
11987 | } | |
c2ff108b JK |
11988 | else |
11989 | { | |
11990 | /* Unspecified array length. */ | |
11991 | high = low - 1; | |
11992 | } | |
e77813c8 PM |
11993 | } |
11994 | ||
11995 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
11996 | without specifying a base type. | |
11997 | In that case, the base type must be set to the type of | |
11998 | the lower bound, upper bound or count, in that order, if any of these | |
11999 | three attributes references an object that has a type. | |
12000 | If no base type is found, the Dwarf-2 specifications say that | |
12001 | a signed integer type of size equal to the size of an address should | |
12002 | be used. | |
12003 | For the following C code: `extern char gdb_int [];' | |
12004 | GCC produces an empty range DIE. | |
12005 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
0963b4bd | 12006 | high bound or count are not yet handled by this code. */ |
e77813c8 PM |
12007 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) |
12008 | { | |
12009 | struct objfile *objfile = cu->objfile; | |
12010 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
12011 | int addr_size = gdbarch_addr_bit (gdbarch) /8; | |
12012 | struct type *int_type = objfile_type (objfile)->builtin_int; | |
12013 | ||
12014 | /* Test "int", "long int", and "long long int" objfile types, | |
12015 | and select the first one having a size above or equal to the | |
12016 | architecture address size. */ | |
12017 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
12018 | base_type = int_type; | |
12019 | else | |
12020 | { | |
12021 | int_type = objfile_type (objfile)->builtin_long; | |
12022 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
12023 | base_type = int_type; | |
12024 | else | |
12025 | { | |
12026 | int_type = objfile_type (objfile)->builtin_long_long; | |
12027 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
12028 | base_type = int_type; | |
12029 | } | |
12030 | } | |
12031 | } | |
a02abb62 | 12032 | |
6e70227d | 12033 | negative_mask = |
43bbcdc2 PH |
12034 | (LONGEST) -1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1); |
12035 | if (!TYPE_UNSIGNED (base_type) && (low & negative_mask)) | |
12036 | low |= negative_mask; | |
12037 | if (!TYPE_UNSIGNED (base_type) && (high & negative_mask)) | |
12038 | high |= negative_mask; | |
12039 | ||
a02abb62 JB |
12040 | range_type = create_range_type (NULL, base_type, low, high); |
12041 | ||
bbb0eef6 JK |
12042 | /* Mark arrays with dynamic length at least as an array of unspecified |
12043 | length. GDB could check the boundary but before it gets implemented at | |
12044 | least allow accessing the array elements. */ | |
d48323d8 | 12045 | if (attr && attr_form_is_block (attr)) |
bbb0eef6 JK |
12046 | TYPE_HIGH_BOUND_UNDEFINED (range_type) = 1; |
12047 | ||
c2ff108b JK |
12048 | /* Ada expects an empty array on no boundary attributes. */ |
12049 | if (attr == NULL && cu->language != language_ada) | |
12050 | TYPE_HIGH_BOUND_UNDEFINED (range_type) = 1; | |
12051 | ||
39cbfefa DJ |
12052 | name = dwarf2_name (die, cu); |
12053 | if (name) | |
12054 | TYPE_NAME (range_type) = name; | |
6e70227d | 12055 | |
e142c38c | 12056 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
12057 | if (attr) |
12058 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
12059 | ||
7e314c57 JK |
12060 | set_die_type (die, range_type, cu); |
12061 | ||
12062 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
12063 | set_descriptive_type (range_type, die, cu); |
12064 | ||
7e314c57 | 12065 | return range_type; |
a02abb62 | 12066 | } |
6e70227d | 12067 | |
f792889a | 12068 | static struct type * |
81a17f79 JB |
12069 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
12070 | { | |
12071 | struct type *type; | |
81a17f79 | 12072 | |
81a17f79 JB |
12073 | /* For now, we only support the C meaning of an unspecified type: void. */ |
12074 | ||
0114d602 DJ |
12075 | type = init_type (TYPE_CODE_VOID, 0, 0, NULL, cu->objfile); |
12076 | TYPE_NAME (type) = dwarf2_name (die, cu); | |
81a17f79 | 12077 | |
f792889a | 12078 | return set_die_type (die, type, cu); |
81a17f79 | 12079 | } |
a02abb62 | 12080 | |
639d11d3 DC |
12081 | /* Read a single die and all its descendents. Set the die's sibling |
12082 | field to NULL; set other fields in the die correctly, and set all | |
12083 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
12084 | location of the info_ptr after reading all of those dies. PARENT | |
12085 | is the parent of the die in question. */ | |
12086 | ||
12087 | static struct die_info * | |
dee91e82 DE |
12088 | read_die_and_children (const struct die_reader_specs *reader, |
12089 | gdb_byte *info_ptr, | |
12090 | gdb_byte **new_info_ptr, | |
12091 | struct die_info *parent) | |
639d11d3 DC |
12092 | { |
12093 | struct die_info *die; | |
fe1b8b76 | 12094 | gdb_byte *cur_ptr; |
639d11d3 DC |
12095 | int has_children; |
12096 | ||
93311388 | 12097 | cur_ptr = read_full_die (reader, &die, info_ptr, &has_children); |
1d325ec1 DJ |
12098 | if (die == NULL) |
12099 | { | |
12100 | *new_info_ptr = cur_ptr; | |
12101 | return NULL; | |
12102 | } | |
93311388 | 12103 | store_in_ref_table (die, reader->cu); |
639d11d3 DC |
12104 | |
12105 | if (has_children) | |
348e048f | 12106 | die->child = read_die_and_siblings (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
12107 | else |
12108 | { | |
12109 | die->child = NULL; | |
12110 | *new_info_ptr = cur_ptr; | |
12111 | } | |
12112 | ||
12113 | die->sibling = NULL; | |
12114 | die->parent = parent; | |
12115 | return die; | |
12116 | } | |
12117 | ||
12118 | /* Read a die, all of its descendents, and all of its siblings; set | |
12119 | all of the fields of all of the dies correctly. Arguments are as | |
12120 | in read_die_and_children. */ | |
12121 | ||
12122 | static struct die_info * | |
93311388 DE |
12123 | read_die_and_siblings (const struct die_reader_specs *reader, |
12124 | gdb_byte *info_ptr, | |
fe1b8b76 | 12125 | gdb_byte **new_info_ptr, |
639d11d3 DC |
12126 | struct die_info *parent) |
12127 | { | |
12128 | struct die_info *first_die, *last_sibling; | |
fe1b8b76 | 12129 | gdb_byte *cur_ptr; |
639d11d3 | 12130 | |
c906108c | 12131 | cur_ptr = info_ptr; |
639d11d3 DC |
12132 | first_die = last_sibling = NULL; |
12133 | ||
12134 | while (1) | |
c906108c | 12135 | { |
639d11d3 | 12136 | struct die_info *die |
dee91e82 | 12137 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 12138 | |
1d325ec1 | 12139 | if (die == NULL) |
c906108c | 12140 | { |
639d11d3 DC |
12141 | *new_info_ptr = cur_ptr; |
12142 | return first_die; | |
c906108c | 12143 | } |
1d325ec1 DJ |
12144 | |
12145 | if (!first_die) | |
12146 | first_die = die; | |
c906108c | 12147 | else |
1d325ec1 DJ |
12148 | last_sibling->sibling = die; |
12149 | ||
12150 | last_sibling = die; | |
c906108c | 12151 | } |
c906108c SS |
12152 | } |
12153 | ||
3019eac3 DE |
12154 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
12155 | attributes. | |
12156 | The caller is responsible for filling in the extra attributes | |
12157 | and updating (*DIEP)->num_attrs. | |
12158 | Set DIEP to point to a newly allocated die with its information, | |
12159 | except for its child, sibling, and parent fields. | |
12160 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
93311388 DE |
12161 | |
12162 | static gdb_byte * | |
3019eac3 DE |
12163 | read_full_die_1 (const struct die_reader_specs *reader, |
12164 | struct die_info **diep, gdb_byte *info_ptr, | |
12165 | int *has_children, int num_extra_attrs) | |
93311388 | 12166 | { |
b64f50a1 JK |
12167 | unsigned int abbrev_number, bytes_read, i; |
12168 | sect_offset offset; | |
93311388 DE |
12169 | struct abbrev_info *abbrev; |
12170 | struct die_info *die; | |
12171 | struct dwarf2_cu *cu = reader->cu; | |
12172 | bfd *abfd = reader->abfd; | |
12173 | ||
b64f50a1 | 12174 | offset.sect_off = info_ptr - reader->buffer; |
93311388 DE |
12175 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
12176 | info_ptr += bytes_read; | |
12177 | if (!abbrev_number) | |
12178 | { | |
12179 | *diep = NULL; | |
12180 | *has_children = 0; | |
12181 | return info_ptr; | |
12182 | } | |
12183 | ||
433df2d4 | 12184 | abbrev = abbrev_table_lookup_abbrev (cu->abbrev_table, abbrev_number); |
93311388 | 12185 | if (!abbrev) |
348e048f DE |
12186 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
12187 | abbrev_number, | |
12188 | bfd_get_filename (abfd)); | |
12189 | ||
3019eac3 | 12190 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
93311388 DE |
12191 | die->offset = offset; |
12192 | die->tag = abbrev->tag; | |
12193 | die->abbrev = abbrev_number; | |
12194 | ||
3019eac3 DE |
12195 | /* Make the result usable. |
12196 | The caller needs to update num_attrs after adding the extra | |
12197 | attributes. */ | |
93311388 DE |
12198 | die->num_attrs = abbrev->num_attrs; |
12199 | ||
12200 | for (i = 0; i < abbrev->num_attrs; ++i) | |
dee91e82 DE |
12201 | info_ptr = read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], |
12202 | info_ptr); | |
93311388 DE |
12203 | |
12204 | *diep = die; | |
12205 | *has_children = abbrev->has_children; | |
12206 | return info_ptr; | |
12207 | } | |
12208 | ||
3019eac3 DE |
12209 | /* Read a die and all its attributes. |
12210 | Set DIEP to point to a newly allocated die with its information, | |
12211 | except for its child, sibling, and parent fields. | |
12212 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
12213 | ||
12214 | static gdb_byte * | |
12215 | read_full_die (const struct die_reader_specs *reader, | |
12216 | struct die_info **diep, gdb_byte *info_ptr, | |
12217 | int *has_children) | |
12218 | { | |
12219 | return read_full_die_1 (reader, diep, info_ptr, has_children, 0); | |
12220 | } | |
433df2d4 DE |
12221 | \f |
12222 | /* Abbreviation tables. | |
3019eac3 | 12223 | |
433df2d4 | 12224 | In DWARF version 2, the description of the debugging information is |
c906108c SS |
12225 | stored in a separate .debug_abbrev section. Before we read any |
12226 | dies from a section we read in all abbreviations and install them | |
433df2d4 DE |
12227 | in a hash table. */ |
12228 | ||
12229 | /* Allocate space for a struct abbrev_info object in ABBREV_TABLE. */ | |
12230 | ||
12231 | static struct abbrev_info * | |
12232 | abbrev_table_alloc_abbrev (struct abbrev_table *abbrev_table) | |
12233 | { | |
12234 | struct abbrev_info *abbrev; | |
12235 | ||
12236 | abbrev = (struct abbrev_info *) | |
12237 | obstack_alloc (&abbrev_table->abbrev_obstack, sizeof (struct abbrev_info)); | |
12238 | memset (abbrev, 0, sizeof (struct abbrev_info)); | |
12239 | return abbrev; | |
12240 | } | |
12241 | ||
12242 | /* Add an abbreviation to the table. */ | |
c906108c SS |
12243 | |
12244 | static void | |
433df2d4 DE |
12245 | abbrev_table_add_abbrev (struct abbrev_table *abbrev_table, |
12246 | unsigned int abbrev_number, | |
12247 | struct abbrev_info *abbrev) | |
12248 | { | |
12249 | unsigned int hash_number; | |
12250 | ||
12251 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
12252 | abbrev->next = abbrev_table->abbrevs[hash_number]; | |
12253 | abbrev_table->abbrevs[hash_number] = abbrev; | |
12254 | } | |
dee91e82 | 12255 | |
433df2d4 DE |
12256 | /* Look up an abbrev in the table. |
12257 | Returns NULL if the abbrev is not found. */ | |
12258 | ||
12259 | static struct abbrev_info * | |
12260 | abbrev_table_lookup_abbrev (const struct abbrev_table *abbrev_table, | |
12261 | unsigned int abbrev_number) | |
c906108c | 12262 | { |
433df2d4 DE |
12263 | unsigned int hash_number; |
12264 | struct abbrev_info *abbrev; | |
12265 | ||
12266 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
12267 | abbrev = abbrev_table->abbrevs[hash_number]; | |
12268 | ||
12269 | while (abbrev) | |
12270 | { | |
12271 | if (abbrev->number == abbrev_number) | |
12272 | return abbrev; | |
12273 | abbrev = abbrev->next; | |
12274 | } | |
12275 | return NULL; | |
12276 | } | |
12277 | ||
12278 | /* Read in an abbrev table. */ | |
12279 | ||
12280 | static struct abbrev_table * | |
12281 | abbrev_table_read_table (struct dwarf2_section_info *section, | |
12282 | sect_offset offset) | |
12283 | { | |
12284 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
12285 | bfd *abfd = section->asection->owner; | |
12286 | struct abbrev_table *abbrev_table; | |
fe1b8b76 | 12287 | gdb_byte *abbrev_ptr; |
c906108c SS |
12288 | struct abbrev_info *cur_abbrev; |
12289 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
433df2d4 | 12290 | unsigned int abbrev_form; |
f3dd6933 DJ |
12291 | struct attr_abbrev *cur_attrs; |
12292 | unsigned int allocated_attrs; | |
c906108c | 12293 | |
433df2d4 | 12294 | abbrev_table = XMALLOC (struct abbrev_table); |
f4dc4d17 | 12295 | abbrev_table->offset = offset; |
433df2d4 DE |
12296 | obstack_init (&abbrev_table->abbrev_obstack); |
12297 | abbrev_table->abbrevs = obstack_alloc (&abbrev_table->abbrev_obstack, | |
12298 | (ABBREV_HASH_SIZE | |
12299 | * sizeof (struct abbrev_info *))); | |
12300 | memset (abbrev_table->abbrevs, 0, | |
12301 | ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); | |
c906108c | 12302 | |
433df2d4 DE |
12303 | dwarf2_read_section (objfile, section); |
12304 | abbrev_ptr = section->buffer + offset.sect_off; | |
c906108c SS |
12305 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
12306 | abbrev_ptr += bytes_read; | |
12307 | ||
f3dd6933 DJ |
12308 | allocated_attrs = ATTR_ALLOC_CHUNK; |
12309 | cur_attrs = xmalloc (allocated_attrs * sizeof (struct attr_abbrev)); | |
6e70227d | 12310 | |
0963b4bd | 12311 | /* Loop until we reach an abbrev number of 0. */ |
c906108c SS |
12312 | while (abbrev_number) |
12313 | { | |
433df2d4 | 12314 | cur_abbrev = abbrev_table_alloc_abbrev (abbrev_table); |
c906108c SS |
12315 | |
12316 | /* read in abbrev header */ | |
12317 | cur_abbrev->number = abbrev_number; | |
12318 | cur_abbrev->tag = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
12319 | abbrev_ptr += bytes_read; | |
12320 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
12321 | abbrev_ptr += 1; | |
12322 | ||
12323 | /* now read in declarations */ | |
12324 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
12325 | abbrev_ptr += bytes_read; | |
12326 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
12327 | abbrev_ptr += bytes_read; | |
12328 | while (abbrev_name) | |
12329 | { | |
f3dd6933 | 12330 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 12331 | { |
f3dd6933 DJ |
12332 | allocated_attrs += ATTR_ALLOC_CHUNK; |
12333 | cur_attrs | |
12334 | = xrealloc (cur_attrs, (allocated_attrs | |
12335 | * sizeof (struct attr_abbrev))); | |
c906108c | 12336 | } |
ae038cb0 | 12337 | |
f3dd6933 DJ |
12338 | cur_attrs[cur_abbrev->num_attrs].name = abbrev_name; |
12339 | cur_attrs[cur_abbrev->num_attrs++].form = abbrev_form; | |
c906108c SS |
12340 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
12341 | abbrev_ptr += bytes_read; | |
12342 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
12343 | abbrev_ptr += bytes_read; | |
12344 | } | |
12345 | ||
433df2d4 | 12346 | cur_abbrev->attrs = obstack_alloc (&abbrev_table->abbrev_obstack, |
f3dd6933 DJ |
12347 | (cur_abbrev->num_attrs |
12348 | * sizeof (struct attr_abbrev))); | |
12349 | memcpy (cur_abbrev->attrs, cur_attrs, | |
12350 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
12351 | ||
433df2d4 | 12352 | abbrev_table_add_abbrev (abbrev_table, abbrev_number, cur_abbrev); |
c906108c SS |
12353 | |
12354 | /* Get next abbreviation. | |
12355 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
12356 | always properly terminated with an abbrev number of 0. |
12357 | Exit loop if we encounter an abbreviation which we have | |
12358 | already read (which means we are about to read the abbreviations | |
12359 | for the next compile unit) or if the end of the abbreviation | |
12360 | table is reached. */ | |
433df2d4 | 12361 | if ((unsigned int) (abbrev_ptr - section->buffer) >= section->size) |
c906108c SS |
12362 | break; |
12363 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
12364 | abbrev_ptr += bytes_read; | |
433df2d4 | 12365 | if (abbrev_table_lookup_abbrev (abbrev_table, abbrev_number) != NULL) |
c906108c SS |
12366 | break; |
12367 | } | |
f3dd6933 DJ |
12368 | |
12369 | xfree (cur_attrs); | |
433df2d4 | 12370 | return abbrev_table; |
c906108c SS |
12371 | } |
12372 | ||
433df2d4 | 12373 | /* Free the resources held by ABBREV_TABLE. */ |
c906108c | 12374 | |
c906108c | 12375 | static void |
433df2d4 | 12376 | abbrev_table_free (struct abbrev_table *abbrev_table) |
c906108c | 12377 | { |
433df2d4 DE |
12378 | obstack_free (&abbrev_table->abbrev_obstack, NULL); |
12379 | xfree (abbrev_table); | |
c906108c SS |
12380 | } |
12381 | ||
f4dc4d17 DE |
12382 | /* Same as abbrev_table_free but as a cleanup. |
12383 | We pass in a pointer to the pointer to the table so that we can | |
12384 | set the pointer to NULL when we're done. It also simplifies | |
12385 | build_type_unit_groups. */ | |
12386 | ||
12387 | static void | |
12388 | abbrev_table_free_cleanup (void *table_ptr) | |
12389 | { | |
12390 | struct abbrev_table **abbrev_table_ptr = table_ptr; | |
12391 | ||
12392 | if (*abbrev_table_ptr != NULL) | |
12393 | abbrev_table_free (*abbrev_table_ptr); | |
12394 | *abbrev_table_ptr = NULL; | |
12395 | } | |
12396 | ||
433df2d4 DE |
12397 | /* Read the abbrev table for CU from ABBREV_SECTION. */ |
12398 | ||
12399 | static void | |
12400 | dwarf2_read_abbrevs (struct dwarf2_cu *cu, | |
12401 | struct dwarf2_section_info *abbrev_section) | |
c906108c | 12402 | { |
433df2d4 DE |
12403 | cu->abbrev_table = |
12404 | abbrev_table_read_table (abbrev_section, cu->header.abbrev_offset); | |
12405 | } | |
c906108c | 12406 | |
433df2d4 | 12407 | /* Release the memory used by the abbrev table for a compilation unit. */ |
c906108c | 12408 | |
433df2d4 DE |
12409 | static void |
12410 | dwarf2_free_abbrev_table (void *ptr_to_cu) | |
12411 | { | |
12412 | struct dwarf2_cu *cu = ptr_to_cu; | |
c906108c | 12413 | |
433df2d4 DE |
12414 | abbrev_table_free (cu->abbrev_table); |
12415 | /* Set this to NULL so that we SEGV if we try to read it later, | |
12416 | and also because free_comp_unit verifies this is NULL. */ | |
12417 | cu->abbrev_table = NULL; | |
12418 | } | |
12419 | \f | |
72bf9492 DJ |
12420 | /* Returns nonzero if TAG represents a type that we might generate a partial |
12421 | symbol for. */ | |
12422 | ||
12423 | static int | |
12424 | is_type_tag_for_partial (int tag) | |
12425 | { | |
12426 | switch (tag) | |
12427 | { | |
12428 | #if 0 | |
12429 | /* Some types that would be reasonable to generate partial symbols for, | |
12430 | that we don't at present. */ | |
12431 | case DW_TAG_array_type: | |
12432 | case DW_TAG_file_type: | |
12433 | case DW_TAG_ptr_to_member_type: | |
12434 | case DW_TAG_set_type: | |
12435 | case DW_TAG_string_type: | |
12436 | case DW_TAG_subroutine_type: | |
12437 | #endif | |
12438 | case DW_TAG_base_type: | |
12439 | case DW_TAG_class_type: | |
680b30c7 | 12440 | case DW_TAG_interface_type: |
72bf9492 DJ |
12441 | case DW_TAG_enumeration_type: |
12442 | case DW_TAG_structure_type: | |
12443 | case DW_TAG_subrange_type: | |
12444 | case DW_TAG_typedef: | |
12445 | case DW_TAG_union_type: | |
12446 | return 1; | |
12447 | default: | |
12448 | return 0; | |
12449 | } | |
12450 | } | |
12451 | ||
12452 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
12453 | ||
12454 | static struct partial_die_info * | |
dee91e82 DE |
12455 | load_partial_dies (const struct die_reader_specs *reader, |
12456 | gdb_byte *info_ptr, int building_psymtab) | |
72bf9492 | 12457 | { |
dee91e82 | 12458 | struct dwarf2_cu *cu = reader->cu; |
bb5ed363 | 12459 | struct objfile *objfile = cu->objfile; |
72bf9492 DJ |
12460 | struct partial_die_info *part_die; |
12461 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; | |
12462 | struct abbrev_info *abbrev; | |
12463 | unsigned int bytes_read; | |
5afb4e99 | 12464 | unsigned int load_all = 0; |
72bf9492 DJ |
12465 | int nesting_level = 1; |
12466 | ||
12467 | parent_die = NULL; | |
12468 | last_die = NULL; | |
12469 | ||
7adf1e79 DE |
12470 | gdb_assert (cu->per_cu != NULL); |
12471 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
12472 | load_all = 1; |
12473 | ||
72bf9492 DJ |
12474 | cu->partial_dies |
12475 | = htab_create_alloc_ex (cu->header.length / 12, | |
12476 | partial_die_hash, | |
12477 | partial_die_eq, | |
12478 | NULL, | |
12479 | &cu->comp_unit_obstack, | |
12480 | hashtab_obstack_allocate, | |
12481 | dummy_obstack_deallocate); | |
12482 | ||
12483 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
12484 | sizeof (struct partial_die_info)); | |
12485 | ||
12486 | while (1) | |
12487 | { | |
12488 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
12489 | ||
12490 | /* A NULL abbrev means the end of a series of children. */ | |
12491 | if (abbrev == NULL) | |
12492 | { | |
12493 | if (--nesting_level == 0) | |
12494 | { | |
12495 | /* PART_DIE was probably the last thing allocated on the | |
12496 | comp_unit_obstack, so we could call obstack_free | |
12497 | here. We don't do that because the waste is small, | |
12498 | and will be cleaned up when we're done with this | |
12499 | compilation unit. This way, we're also more robust | |
12500 | against other users of the comp_unit_obstack. */ | |
12501 | return first_die; | |
12502 | } | |
12503 | info_ptr += bytes_read; | |
12504 | last_die = parent_die; | |
12505 | parent_die = parent_die->die_parent; | |
12506 | continue; | |
12507 | } | |
12508 | ||
98bfdba5 PA |
12509 | /* Check for template arguments. We never save these; if |
12510 | they're seen, we just mark the parent, and go on our way. */ | |
12511 | if (parent_die != NULL | |
12512 | && cu->language == language_cplus | |
12513 | && (abbrev->tag == DW_TAG_template_type_param | |
12514 | || abbrev->tag == DW_TAG_template_value_param)) | |
12515 | { | |
12516 | parent_die->has_template_arguments = 1; | |
12517 | ||
12518 | if (!load_all) | |
12519 | { | |
12520 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 12521 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
12522 | continue; |
12523 | } | |
12524 | } | |
12525 | ||
0d99eb77 | 12526 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
12527 | Skip their other children. */ |
12528 | if (!load_all | |
12529 | && cu->language == language_cplus | |
12530 | && parent_die != NULL | |
12531 | && parent_die->tag == DW_TAG_subprogram) | |
12532 | { | |
dee91e82 | 12533 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
12534 | continue; |
12535 | } | |
12536 | ||
5afb4e99 DJ |
12537 | /* Check whether this DIE is interesting enough to save. Normally |
12538 | we would not be interested in members here, but there may be | |
12539 | later variables referencing them via DW_AT_specification (for | |
12540 | static members). */ | |
12541 | if (!load_all | |
12542 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 12543 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
12544 | && abbrev->tag != DW_TAG_enumerator |
12545 | && abbrev->tag != DW_TAG_subprogram | |
bc30ff58 | 12546 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 12547 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 12548 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 12549 | && abbrev->tag != DW_TAG_module |
95554aad TT |
12550 | && abbrev->tag != DW_TAG_member |
12551 | && abbrev->tag != DW_TAG_imported_unit) | |
72bf9492 DJ |
12552 | { |
12553 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 12554 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
12555 | continue; |
12556 | } | |
12557 | ||
dee91e82 DE |
12558 | info_ptr = read_partial_die (reader, part_die, abbrev, bytes_read, |
12559 | info_ptr); | |
72bf9492 DJ |
12560 | |
12561 | /* This two-pass algorithm for processing partial symbols has a | |
12562 | high cost in cache pressure. Thus, handle some simple cases | |
12563 | here which cover the majority of C partial symbols. DIEs | |
12564 | which neither have specification tags in them, nor could have | |
12565 | specification tags elsewhere pointing at them, can simply be | |
12566 | processed and discarded. | |
12567 | ||
12568 | This segment is also optional; scan_partial_symbols and | |
12569 | add_partial_symbol will handle these DIEs if we chain | |
12570 | them in normally. When compilers which do not emit large | |
12571 | quantities of duplicate debug information are more common, | |
12572 | this code can probably be removed. */ | |
12573 | ||
12574 | /* Any complete simple types at the top level (pretty much all | |
12575 | of them, for a language without namespaces), can be processed | |
12576 | directly. */ | |
12577 | if (parent_die == NULL | |
12578 | && part_die->has_specification == 0 | |
12579 | && part_die->is_declaration == 0 | |
d8228535 | 12580 | && ((part_die->tag == DW_TAG_typedef && !part_die->has_children) |
72bf9492 DJ |
12581 | || part_die->tag == DW_TAG_base_type |
12582 | || part_die->tag == DW_TAG_subrange_type)) | |
12583 | { | |
12584 | if (building_psymtab && part_die->name != NULL) | |
04a679b8 | 12585 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 12586 | VAR_DOMAIN, LOC_TYPEDEF, |
bb5ed363 DE |
12587 | &objfile->static_psymbols, |
12588 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
dee91e82 | 12589 | info_ptr = locate_pdi_sibling (reader, part_die, info_ptr); |
72bf9492 DJ |
12590 | continue; |
12591 | } | |
12592 | ||
d8228535 JK |
12593 | /* The exception for DW_TAG_typedef with has_children above is |
12594 | a workaround of GCC PR debug/47510. In the case of this complaint | |
12595 | type_name_no_tag_or_error will error on such types later. | |
12596 | ||
12597 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
12598 | it could not find the child DIEs referenced later, this is checked | |
12599 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
12600 | ||
12601 | if (part_die->tag == DW_TAG_typedef && part_die->has_children) | |
12602 | complaint (&symfile_complaints, | |
12603 | _("DW_TAG_typedef has childen - GCC PR debug/47510 bug " | |
12604 | "- DIE at 0x%x [in module %s]"), | |
b64f50a1 | 12605 | part_die->offset.sect_off, objfile->name); |
d8228535 | 12606 | |
72bf9492 DJ |
12607 | /* If we're at the second level, and we're an enumerator, and |
12608 | our parent has no specification (meaning possibly lives in a | |
12609 | namespace elsewhere), then we can add the partial symbol now | |
12610 | instead of queueing it. */ | |
12611 | if (part_die->tag == DW_TAG_enumerator | |
12612 | && parent_die != NULL | |
12613 | && parent_die->die_parent == NULL | |
12614 | && parent_die->tag == DW_TAG_enumeration_type | |
12615 | && parent_die->has_specification == 0) | |
12616 | { | |
12617 | if (part_die->name == NULL) | |
3e43a32a MS |
12618 | complaint (&symfile_complaints, |
12619 | _("malformed enumerator DIE ignored")); | |
72bf9492 | 12620 | else if (building_psymtab) |
04a679b8 | 12621 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 12622 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
12623 | (cu->language == language_cplus |
12624 | || cu->language == language_java) | |
bb5ed363 DE |
12625 | ? &objfile->global_psymbols |
12626 | : &objfile->static_psymbols, | |
12627 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
72bf9492 | 12628 | |
dee91e82 | 12629 | info_ptr = locate_pdi_sibling (reader, part_die, info_ptr); |
72bf9492 DJ |
12630 | continue; |
12631 | } | |
12632 | ||
12633 | /* We'll save this DIE so link it in. */ | |
12634 | part_die->die_parent = parent_die; | |
12635 | part_die->die_sibling = NULL; | |
12636 | part_die->die_child = NULL; | |
12637 | ||
12638 | if (last_die && last_die == parent_die) | |
12639 | last_die->die_child = part_die; | |
12640 | else if (last_die) | |
12641 | last_die->die_sibling = part_die; | |
12642 | ||
12643 | last_die = part_die; | |
12644 | ||
12645 | if (first_die == NULL) | |
12646 | first_die = part_die; | |
12647 | ||
12648 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
12649 | find interesting need to be in the hash table, because we | |
12650 | also have the parent/sibling/child chains; only those that we | |
12651 | might refer to by offset later during partial symbol reading. | |
12652 | ||
12653 | For now this means things that might have be the target of a | |
12654 | DW_AT_specification, DW_AT_abstract_origin, or | |
12655 | DW_AT_extension. DW_AT_extension will refer only to | |
12656 | namespaces; DW_AT_abstract_origin refers to functions (and | |
12657 | many things under the function DIE, but we do not recurse | |
12658 | into function DIEs during partial symbol reading) and | |
12659 | possibly variables as well; DW_AT_specification refers to | |
12660 | declarations. Declarations ought to have the DW_AT_declaration | |
12661 | flag. It happens that GCC forgets to put it in sometimes, but | |
12662 | only for functions, not for types. | |
12663 | ||
12664 | Adding more things than necessary to the hash table is harmless | |
12665 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
12666 | wasted time in find_partial_die, when we reread the compilation |
12667 | unit with load_all_dies set. */ | |
72bf9492 | 12668 | |
5afb4e99 | 12669 | if (load_all |
72929c62 | 12670 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 12671 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
12672 | || abbrev->tag == DW_TAG_variable |
12673 | || abbrev->tag == DW_TAG_namespace | |
12674 | || part_die->is_declaration) | |
12675 | { | |
12676 | void **slot; | |
12677 | ||
12678 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
b64f50a1 | 12679 | part_die->offset.sect_off, INSERT); |
72bf9492 DJ |
12680 | *slot = part_die; |
12681 | } | |
12682 | ||
12683 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
12684 | sizeof (struct partial_die_info)); | |
12685 | ||
12686 | /* For some DIEs we want to follow their children (if any). For C | |
bc30ff58 | 12687 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
12688 | languages we have to, so that we can get at method physnames |
12689 | to infer fully qualified class names, for DW_AT_specification, | |
12690 | and for C++ template arguments. For C++, we also look one level | |
12691 | inside functions to find template arguments (if the name of the | |
12692 | function does not already contain the template arguments). | |
bc30ff58 JB |
12693 | |
12694 | For Ada, we need to scan the children of subprograms and lexical | |
12695 | blocks as well because Ada allows the definition of nested | |
12696 | entities that could be interesting for the debugger, such as | |
12697 | nested subprograms for instance. */ | |
72bf9492 | 12698 | if (last_die->has_children |
5afb4e99 DJ |
12699 | && (load_all |
12700 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 12701 | || last_die->tag == DW_TAG_module |
72bf9492 | 12702 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
12703 | || (cu->language == language_cplus |
12704 | && last_die->tag == DW_TAG_subprogram | |
12705 | && (last_die->name == NULL | |
12706 | || strchr (last_die->name, '<') == NULL)) | |
72bf9492 DJ |
12707 | || (cu->language != language_c |
12708 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 12709 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 12710 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 JB |
12711 | || last_die->tag == DW_TAG_union_type)) |
12712 | || (cu->language == language_ada | |
12713 | && (last_die->tag == DW_TAG_subprogram | |
12714 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
12715 | { |
12716 | nesting_level++; | |
12717 | parent_die = last_die; | |
12718 | continue; | |
12719 | } | |
12720 | ||
12721 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 12722 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
12723 | |
12724 | /* Back to the top, do it again. */ | |
12725 | } | |
12726 | } | |
12727 | ||
c906108c SS |
12728 | /* Read a minimal amount of information into the minimal die structure. */ |
12729 | ||
fe1b8b76 | 12730 | static gdb_byte * |
dee91e82 DE |
12731 | read_partial_die (const struct die_reader_specs *reader, |
12732 | struct partial_die_info *part_die, | |
12733 | struct abbrev_info *abbrev, unsigned int abbrev_len, | |
12734 | gdb_byte *info_ptr) | |
c906108c | 12735 | { |
dee91e82 | 12736 | struct dwarf2_cu *cu = reader->cu; |
bb5ed363 | 12737 | struct objfile *objfile = cu->objfile; |
dee91e82 | 12738 | gdb_byte *buffer = reader->buffer; |
fa238c03 | 12739 | unsigned int i; |
c906108c | 12740 | struct attribute attr; |
c5aa993b | 12741 | int has_low_pc_attr = 0; |
c906108c | 12742 | int has_high_pc_attr = 0; |
91da1414 | 12743 | int high_pc_relative = 0; |
c906108c | 12744 | |
72bf9492 | 12745 | memset (part_die, 0, sizeof (struct partial_die_info)); |
c906108c | 12746 | |
b64f50a1 | 12747 | part_die->offset.sect_off = info_ptr - buffer; |
72bf9492 DJ |
12748 | |
12749 | info_ptr += abbrev_len; | |
12750 | ||
12751 | if (abbrev == NULL) | |
12752 | return info_ptr; | |
12753 | ||
c906108c SS |
12754 | part_die->tag = abbrev->tag; |
12755 | part_die->has_children = abbrev->has_children; | |
c906108c SS |
12756 | |
12757 | for (i = 0; i < abbrev->num_attrs; ++i) | |
12758 | { | |
dee91e82 | 12759 | info_ptr = read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
c906108c SS |
12760 | |
12761 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 12762 | partial symbol table. */ |
c906108c SS |
12763 | switch (attr.name) |
12764 | { | |
12765 | case DW_AT_name: | |
71c25dea TT |
12766 | switch (part_die->tag) |
12767 | { | |
12768 | case DW_TAG_compile_unit: | |
95554aad | 12769 | case DW_TAG_partial_unit: |
348e048f | 12770 | case DW_TAG_type_unit: |
71c25dea TT |
12771 | /* Compilation units have a DW_AT_name that is a filename, not |
12772 | a source language identifier. */ | |
12773 | case DW_TAG_enumeration_type: | |
12774 | case DW_TAG_enumerator: | |
12775 | /* These tags always have simple identifiers already; no need | |
12776 | to canonicalize them. */ | |
12777 | part_die->name = DW_STRING (&attr); | |
12778 | break; | |
12779 | default: | |
12780 | part_die->name | |
12781 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, | |
bb5ed363 | 12782 | &objfile->objfile_obstack); |
71c25dea TT |
12783 | break; |
12784 | } | |
c906108c | 12785 | break; |
31ef98ae | 12786 | case DW_AT_linkage_name: |
c906108c | 12787 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
12788 | /* Note that both forms of linkage name might appear. We |
12789 | assume they will be the same, and we only store the last | |
12790 | one we see. */ | |
94af9270 KS |
12791 | if (cu->language == language_ada) |
12792 | part_die->name = DW_STRING (&attr); | |
abc72ce4 | 12793 | part_die->linkage_name = DW_STRING (&attr); |
c906108c SS |
12794 | break; |
12795 | case DW_AT_low_pc: | |
12796 | has_low_pc_attr = 1; | |
12797 | part_die->lowpc = DW_ADDR (&attr); | |
12798 | break; | |
12799 | case DW_AT_high_pc: | |
12800 | has_high_pc_attr = 1; | |
3019eac3 DE |
12801 | if (attr.form == DW_FORM_addr |
12802 | || attr.form == DW_FORM_GNU_addr_index) | |
91da1414 MW |
12803 | part_die->highpc = DW_ADDR (&attr); |
12804 | else | |
12805 | { | |
12806 | high_pc_relative = 1; | |
12807 | part_die->highpc = DW_UNSND (&attr); | |
12808 | } | |
c906108c SS |
12809 | break; |
12810 | case DW_AT_location: | |
0963b4bd | 12811 | /* Support the .debug_loc offsets. */ |
8e19ed76 PS |
12812 | if (attr_form_is_block (&attr)) |
12813 | { | |
95554aad | 12814 | part_die->d.locdesc = DW_BLOCK (&attr); |
8e19ed76 | 12815 | } |
3690dd37 | 12816 | else if (attr_form_is_section_offset (&attr)) |
8e19ed76 | 12817 | { |
4d3c2250 | 12818 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
12819 | } |
12820 | else | |
12821 | { | |
4d3c2250 KB |
12822 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
12823 | "partial symbol information"); | |
8e19ed76 | 12824 | } |
c906108c | 12825 | break; |
c906108c SS |
12826 | case DW_AT_external: |
12827 | part_die->is_external = DW_UNSND (&attr); | |
12828 | break; | |
12829 | case DW_AT_declaration: | |
12830 | part_die->is_declaration = DW_UNSND (&attr); | |
12831 | break; | |
12832 | case DW_AT_type: | |
12833 | part_die->has_type = 1; | |
12834 | break; | |
12835 | case DW_AT_abstract_origin: | |
12836 | case DW_AT_specification: | |
72bf9492 DJ |
12837 | case DW_AT_extension: |
12838 | part_die->has_specification = 1; | |
c764a876 | 12839 | part_die->spec_offset = dwarf2_get_ref_die_offset (&attr); |
36586728 TT |
12840 | part_die->spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
12841 | || cu->per_cu->is_dwz); | |
c906108c SS |
12842 | break; |
12843 | case DW_AT_sibling: | |
12844 | /* Ignore absolute siblings, they might point outside of | |
12845 | the current compile unit. */ | |
12846 | if (attr.form == DW_FORM_ref_addr) | |
3e43a32a MS |
12847 | complaint (&symfile_complaints, |
12848 | _("ignoring absolute DW_AT_sibling")); | |
c906108c | 12849 | else |
b64f50a1 | 12850 | part_die->sibling = buffer + dwarf2_get_ref_die_offset (&attr).sect_off; |
c906108c | 12851 | break; |
fa4028e9 JB |
12852 | case DW_AT_byte_size: |
12853 | part_die->has_byte_size = 1; | |
12854 | break; | |
68511cec CES |
12855 | case DW_AT_calling_convention: |
12856 | /* DWARF doesn't provide a way to identify a program's source-level | |
12857 | entry point. DW_AT_calling_convention attributes are only meant | |
12858 | to describe functions' calling conventions. | |
12859 | ||
12860 | However, because it's a necessary piece of information in | |
12861 | Fortran, and because DW_CC_program is the only piece of debugging | |
12862 | information whose definition refers to a 'main program' at all, | |
12863 | several compilers have begun marking Fortran main programs with | |
12864 | DW_CC_program --- even when those functions use the standard | |
12865 | calling conventions. | |
12866 | ||
12867 | So until DWARF specifies a way to provide this information and | |
12868 | compilers pick up the new representation, we'll support this | |
12869 | practice. */ | |
12870 | if (DW_UNSND (&attr) == DW_CC_program | |
12871 | && cu->language == language_fortran) | |
01f8c46d JK |
12872 | { |
12873 | set_main_name (part_die->name); | |
12874 | ||
12875 | /* As this DIE has a static linkage the name would be difficult | |
12876 | to look up later. */ | |
12877 | language_of_main = language_fortran; | |
12878 | } | |
68511cec | 12879 | break; |
481860b3 GB |
12880 | case DW_AT_inline: |
12881 | if (DW_UNSND (&attr) == DW_INL_inlined | |
12882 | || DW_UNSND (&attr) == DW_INL_declared_inlined) | |
12883 | part_die->may_be_inlined = 1; | |
12884 | break; | |
95554aad TT |
12885 | |
12886 | case DW_AT_import: | |
12887 | if (part_die->tag == DW_TAG_imported_unit) | |
36586728 TT |
12888 | { |
12889 | part_die->d.offset = dwarf2_get_ref_die_offset (&attr); | |
12890 | part_die->is_dwz = (attr.form == DW_FORM_GNU_ref_alt | |
12891 | || cu->per_cu->is_dwz); | |
12892 | } | |
95554aad TT |
12893 | break; |
12894 | ||
c906108c SS |
12895 | default: |
12896 | break; | |
12897 | } | |
12898 | } | |
12899 | ||
91da1414 MW |
12900 | if (high_pc_relative) |
12901 | part_die->highpc += part_die->lowpc; | |
12902 | ||
9373cf26 JK |
12903 | if (has_low_pc_attr && has_high_pc_attr) |
12904 | { | |
12905 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
12906 | eliminate duplicate copies of functions and vtables and such. | |
12907 | The linker will arbitrarily choose one and discard the others. | |
12908 | The AT_*_pc values for such functions refer to local labels in | |
12909 | these sections. If the section from that file was discarded, the | |
12910 | labels are not in the output, so the relocs get a value of 0. | |
12911 | If this is a discarded function, mark the pc bounds as invalid, | |
12912 | so that GDB will ignore it. */ | |
12913 | if (part_die->lowpc == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
12914 | { | |
bb5ed363 | 12915 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
12916 | |
12917 | complaint (&symfile_complaints, | |
12918 | _("DW_AT_low_pc %s is zero " | |
12919 | "for DIE at 0x%x [in module %s]"), | |
12920 | paddress (gdbarch, part_die->lowpc), | |
b64f50a1 | 12921 | part_die->offset.sect_off, objfile->name); |
9373cf26 JK |
12922 | } |
12923 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
12924 | else if (part_die->lowpc >= part_die->highpc) | |
12925 | { | |
bb5ed363 | 12926 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
12927 | |
12928 | complaint (&symfile_complaints, | |
12929 | _("DW_AT_low_pc %s is not < DW_AT_high_pc %s " | |
12930 | "for DIE at 0x%x [in module %s]"), | |
12931 | paddress (gdbarch, part_die->lowpc), | |
12932 | paddress (gdbarch, part_die->highpc), | |
b64f50a1 | 12933 | part_die->offset.sect_off, objfile->name); |
9373cf26 JK |
12934 | } |
12935 | else | |
12936 | part_die->has_pc_info = 1; | |
12937 | } | |
85cbf3d3 | 12938 | |
c906108c SS |
12939 | return info_ptr; |
12940 | } | |
12941 | ||
72bf9492 DJ |
12942 | /* Find a cached partial DIE at OFFSET in CU. */ |
12943 | ||
12944 | static struct partial_die_info * | |
b64f50a1 | 12945 | find_partial_die_in_comp_unit (sect_offset offset, struct dwarf2_cu *cu) |
72bf9492 DJ |
12946 | { |
12947 | struct partial_die_info *lookup_die = NULL; | |
12948 | struct partial_die_info part_die; | |
12949 | ||
12950 | part_die.offset = offset; | |
b64f50a1 JK |
12951 | lookup_die = htab_find_with_hash (cu->partial_dies, &part_die, |
12952 | offset.sect_off); | |
72bf9492 | 12953 | |
72bf9492 DJ |
12954 | return lookup_die; |
12955 | } | |
12956 | ||
348e048f DE |
12957 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
12958 | except in the case of .debug_types DIEs which do not reference | |
12959 | outside their CU (they do however referencing other types via | |
55f1336d | 12960 | DW_FORM_ref_sig8). */ |
72bf9492 DJ |
12961 | |
12962 | static struct partial_die_info * | |
36586728 | 12963 | find_partial_die (sect_offset offset, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 12964 | { |
bb5ed363 | 12965 | struct objfile *objfile = cu->objfile; |
5afb4e99 DJ |
12966 | struct dwarf2_per_cu_data *per_cu = NULL; |
12967 | struct partial_die_info *pd = NULL; | |
72bf9492 | 12968 | |
36586728 TT |
12969 | if (offset_in_dwz == cu->per_cu->is_dwz |
12970 | && offset_in_cu_p (&cu->header, offset)) | |
5afb4e99 DJ |
12971 | { |
12972 | pd = find_partial_die_in_comp_unit (offset, cu); | |
12973 | if (pd != NULL) | |
12974 | return pd; | |
0d99eb77 DE |
12975 | /* We missed recording what we needed. |
12976 | Load all dies and try again. */ | |
12977 | per_cu = cu->per_cu; | |
5afb4e99 | 12978 | } |
0d99eb77 DE |
12979 | else |
12980 | { | |
12981 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 12982 | if (cu->per_cu->is_debug_types) |
0d99eb77 DE |
12983 | { |
12984 | error (_("Dwarf Error: Type Unit at offset 0x%lx contains" | |
12985 | " external reference to offset 0x%lx [in module %s].\n"), | |
12986 | (long) cu->header.offset.sect_off, (long) offset.sect_off, | |
12987 | bfd_get_filename (objfile->obfd)); | |
12988 | } | |
36586728 TT |
12989 | per_cu = dwarf2_find_containing_comp_unit (offset, offset_in_dwz, |
12990 | objfile); | |
72bf9492 | 12991 | |
0d99eb77 DE |
12992 | if (per_cu->cu == NULL || per_cu->cu->partial_dies == NULL) |
12993 | load_partial_comp_unit (per_cu); | |
ae038cb0 | 12994 | |
0d99eb77 DE |
12995 | per_cu->cu->last_used = 0; |
12996 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
12997 | } | |
5afb4e99 | 12998 | |
dee91e82 DE |
12999 | /* If we didn't find it, and not all dies have been loaded, |
13000 | load them all and try again. */ | |
13001 | ||
5afb4e99 DJ |
13002 | if (pd == NULL && per_cu->load_all_dies == 0) |
13003 | { | |
5afb4e99 | 13004 | per_cu->load_all_dies = 1; |
fd820528 DE |
13005 | |
13006 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
13007 | THIS_CU->cu may already be in use. So we can't just free it and | |
13008 | replace its DIEs with the ones we read in. Instead, we leave those | |
13009 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
13010 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
13011 | set. */ | |
dee91e82 | 13012 | load_partial_comp_unit (per_cu); |
5afb4e99 DJ |
13013 | |
13014 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
13015 | } | |
13016 | ||
13017 | if (pd == NULL) | |
13018 | internal_error (__FILE__, __LINE__, | |
3e43a32a MS |
13019 | _("could not find partial DIE 0x%x " |
13020 | "in cache [from module %s]\n"), | |
b64f50a1 | 13021 | offset.sect_off, bfd_get_filename (objfile->obfd)); |
5afb4e99 | 13022 | return pd; |
72bf9492 DJ |
13023 | } |
13024 | ||
abc72ce4 DE |
13025 | /* See if we can figure out if the class lives in a namespace. We do |
13026 | this by looking for a member function; its demangled name will | |
13027 | contain namespace info, if there is any. */ | |
13028 | ||
13029 | static void | |
13030 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
13031 | struct dwarf2_cu *cu) | |
13032 | { | |
13033 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
13034 | what template types look like, because the demangler | |
13035 | frequently doesn't give the same name as the debug info. We | |
13036 | could fix this by only using the demangled name to get the | |
13037 | prefix (but see comment in read_structure_type). */ | |
13038 | ||
13039 | struct partial_die_info *real_pdi; | |
13040 | struct partial_die_info *child_pdi; | |
13041 | ||
13042 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
13043 | we should not do this. We'll prepend the parent's fully qualified | |
13044 | name when we create the partial symbol. */ | |
13045 | ||
13046 | real_pdi = struct_pdi; | |
13047 | while (real_pdi->has_specification) | |
36586728 TT |
13048 | real_pdi = find_partial_die (real_pdi->spec_offset, |
13049 | real_pdi->spec_is_dwz, cu); | |
abc72ce4 DE |
13050 | |
13051 | if (real_pdi->die_parent != NULL) | |
13052 | return; | |
13053 | ||
13054 | for (child_pdi = struct_pdi->die_child; | |
13055 | child_pdi != NULL; | |
13056 | child_pdi = child_pdi->die_sibling) | |
13057 | { | |
13058 | if (child_pdi->tag == DW_TAG_subprogram | |
13059 | && child_pdi->linkage_name != NULL) | |
13060 | { | |
13061 | char *actual_class_name | |
13062 | = language_class_name_from_physname (cu->language_defn, | |
13063 | child_pdi->linkage_name); | |
13064 | if (actual_class_name != NULL) | |
13065 | { | |
13066 | struct_pdi->name | |
13067 | = obsavestring (actual_class_name, | |
13068 | strlen (actual_class_name), | |
13069 | &cu->objfile->objfile_obstack); | |
13070 | xfree (actual_class_name); | |
13071 | } | |
13072 | break; | |
13073 | } | |
13074 | } | |
13075 | } | |
13076 | ||
72bf9492 DJ |
13077 | /* Adjust PART_DIE before generating a symbol for it. This function |
13078 | may set the is_external flag or change the DIE's name. */ | |
13079 | ||
13080 | static void | |
13081 | fixup_partial_die (struct partial_die_info *part_die, | |
13082 | struct dwarf2_cu *cu) | |
13083 | { | |
abc72ce4 DE |
13084 | /* Once we've fixed up a die, there's no point in doing so again. |
13085 | This also avoids a memory leak if we were to call | |
13086 | guess_partial_die_structure_name multiple times. */ | |
13087 | if (part_die->fixup_called) | |
13088 | return; | |
13089 | ||
72bf9492 DJ |
13090 | /* If we found a reference attribute and the DIE has no name, try |
13091 | to find a name in the referred to DIE. */ | |
13092 | ||
13093 | if (part_die->name == NULL && part_die->has_specification) | |
13094 | { | |
13095 | struct partial_die_info *spec_die; | |
72bf9492 | 13096 | |
36586728 TT |
13097 | spec_die = find_partial_die (part_die->spec_offset, |
13098 | part_die->spec_is_dwz, cu); | |
72bf9492 | 13099 | |
10b3939b | 13100 | fixup_partial_die (spec_die, cu); |
72bf9492 DJ |
13101 | |
13102 | if (spec_die->name) | |
13103 | { | |
13104 | part_die->name = spec_die->name; | |
13105 | ||
13106 | /* Copy DW_AT_external attribute if it is set. */ | |
13107 | if (spec_die->is_external) | |
13108 | part_die->is_external = spec_die->is_external; | |
13109 | } | |
13110 | } | |
13111 | ||
13112 | /* Set default names for some unnamed DIEs. */ | |
72bf9492 DJ |
13113 | |
13114 | if (part_die->name == NULL && part_die->tag == DW_TAG_namespace) | |
2b1dbab0 | 13115 | part_die->name = CP_ANONYMOUS_NAMESPACE_STR; |
72bf9492 | 13116 | |
abc72ce4 DE |
13117 | /* If there is no parent die to provide a namespace, and there are |
13118 | children, see if we can determine the namespace from their linkage | |
122d1940 | 13119 | name. */ |
abc72ce4 | 13120 | if (cu->language == language_cplus |
8b70b953 | 13121 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
13122 | && part_die->die_parent == NULL |
13123 | && part_die->has_children | |
13124 | && (part_die->tag == DW_TAG_class_type | |
13125 | || part_die->tag == DW_TAG_structure_type | |
13126 | || part_die->tag == DW_TAG_union_type)) | |
13127 | guess_partial_die_structure_name (part_die, cu); | |
13128 | ||
53832f31 TT |
13129 | /* GCC might emit a nameless struct or union that has a linkage |
13130 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
13131 | if (part_die->name == NULL | |
96408a79 SA |
13132 | && (part_die->tag == DW_TAG_class_type |
13133 | || part_die->tag == DW_TAG_interface_type | |
13134 | || part_die->tag == DW_TAG_structure_type | |
13135 | || part_die->tag == DW_TAG_union_type) | |
53832f31 TT |
13136 | && part_die->linkage_name != NULL) |
13137 | { | |
13138 | char *demangled; | |
13139 | ||
13140 | demangled = cplus_demangle (part_die->linkage_name, DMGL_TYPES); | |
13141 | if (demangled) | |
13142 | { | |
96408a79 SA |
13143 | const char *base; |
13144 | ||
13145 | /* Strip any leading namespaces/classes, keep only the base name. | |
13146 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
13147 | base = strrchr (demangled, ':'); | |
13148 | if (base && base > demangled && base[-1] == ':') | |
13149 | base++; | |
13150 | else | |
13151 | base = demangled; | |
13152 | ||
13153 | part_die->name = obsavestring (base, strlen (base), | |
53832f31 TT |
13154 | &cu->objfile->objfile_obstack); |
13155 | xfree (demangled); | |
13156 | } | |
13157 | } | |
13158 | ||
abc72ce4 | 13159 | part_die->fixup_called = 1; |
72bf9492 DJ |
13160 | } |
13161 | ||
a8329558 | 13162 | /* Read an attribute value described by an attribute form. */ |
c906108c | 13163 | |
fe1b8b76 | 13164 | static gdb_byte * |
dee91e82 DE |
13165 | read_attribute_value (const struct die_reader_specs *reader, |
13166 | struct attribute *attr, unsigned form, | |
13167 | gdb_byte *info_ptr) | |
c906108c | 13168 | { |
dee91e82 DE |
13169 | struct dwarf2_cu *cu = reader->cu; |
13170 | bfd *abfd = reader->abfd; | |
e7c27a73 | 13171 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
13172 | unsigned int bytes_read; |
13173 | struct dwarf_block *blk; | |
13174 | ||
a8329558 KW |
13175 | attr->form = form; |
13176 | switch (form) | |
c906108c | 13177 | { |
c906108c | 13178 | case DW_FORM_ref_addr: |
ae411497 | 13179 | if (cu->header.version == 2) |
4568ecf9 | 13180 | DW_UNSND (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
ae411497 | 13181 | else |
4568ecf9 DE |
13182 | DW_UNSND (attr) = read_offset (abfd, info_ptr, |
13183 | &cu->header, &bytes_read); | |
ae411497 TT |
13184 | info_ptr += bytes_read; |
13185 | break; | |
36586728 TT |
13186 | case DW_FORM_GNU_ref_alt: |
13187 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
13188 | info_ptr += bytes_read; | |
13189 | break; | |
ae411497 | 13190 | case DW_FORM_addr: |
e7c27a73 | 13191 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
107d2387 | 13192 | info_ptr += bytes_read; |
c906108c SS |
13193 | break; |
13194 | case DW_FORM_block2: | |
7b5a2f43 | 13195 | blk = dwarf_alloc_block (cu); |
c906108c SS |
13196 | blk->size = read_2_bytes (abfd, info_ptr); |
13197 | info_ptr += 2; | |
13198 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
13199 | info_ptr += blk->size; | |
13200 | DW_BLOCK (attr) = blk; | |
13201 | break; | |
13202 | case DW_FORM_block4: | |
7b5a2f43 | 13203 | blk = dwarf_alloc_block (cu); |
c906108c SS |
13204 | blk->size = read_4_bytes (abfd, info_ptr); |
13205 | info_ptr += 4; | |
13206 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
13207 | info_ptr += blk->size; | |
13208 | DW_BLOCK (attr) = blk; | |
13209 | break; | |
13210 | case DW_FORM_data2: | |
13211 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
13212 | info_ptr += 2; | |
13213 | break; | |
13214 | case DW_FORM_data4: | |
13215 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
13216 | info_ptr += 4; | |
13217 | break; | |
13218 | case DW_FORM_data8: | |
13219 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
13220 | info_ptr += 8; | |
13221 | break; | |
2dc7f7b3 TT |
13222 | case DW_FORM_sec_offset: |
13223 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
13224 | info_ptr += bytes_read; | |
13225 | break; | |
c906108c | 13226 | case DW_FORM_string: |
9b1c24c8 | 13227 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 13228 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
13229 | info_ptr += bytes_read; |
13230 | break; | |
4bdf3d34 | 13231 | case DW_FORM_strp: |
36586728 TT |
13232 | if (!cu->per_cu->is_dwz) |
13233 | { | |
13234 | DW_STRING (attr) = read_indirect_string (abfd, info_ptr, cu_header, | |
13235 | &bytes_read); | |
13236 | DW_STRING_IS_CANONICAL (attr) = 0; | |
13237 | info_ptr += bytes_read; | |
13238 | break; | |
13239 | } | |
13240 | /* FALLTHROUGH */ | |
13241 | case DW_FORM_GNU_strp_alt: | |
13242 | { | |
13243 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
13244 | LONGEST str_offset = read_offset (abfd, info_ptr, cu_header, | |
13245 | &bytes_read); | |
13246 | ||
13247 | DW_STRING (attr) = read_indirect_string_from_dwz (dwz, str_offset); | |
13248 | DW_STRING_IS_CANONICAL (attr) = 0; | |
13249 | info_ptr += bytes_read; | |
13250 | } | |
4bdf3d34 | 13251 | break; |
2dc7f7b3 | 13252 | case DW_FORM_exprloc: |
c906108c | 13253 | case DW_FORM_block: |
7b5a2f43 | 13254 | blk = dwarf_alloc_block (cu); |
c906108c SS |
13255 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
13256 | info_ptr += bytes_read; | |
13257 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
13258 | info_ptr += blk->size; | |
13259 | DW_BLOCK (attr) = blk; | |
13260 | break; | |
13261 | case DW_FORM_block1: | |
7b5a2f43 | 13262 | blk = dwarf_alloc_block (cu); |
c906108c SS |
13263 | blk->size = read_1_byte (abfd, info_ptr); |
13264 | info_ptr += 1; | |
13265 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
13266 | info_ptr += blk->size; | |
13267 | DW_BLOCK (attr) = blk; | |
13268 | break; | |
13269 | case DW_FORM_data1: | |
13270 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
13271 | info_ptr += 1; | |
13272 | break; | |
13273 | case DW_FORM_flag: | |
13274 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
13275 | info_ptr += 1; | |
13276 | break; | |
2dc7f7b3 TT |
13277 | case DW_FORM_flag_present: |
13278 | DW_UNSND (attr) = 1; | |
13279 | break; | |
c906108c SS |
13280 | case DW_FORM_sdata: |
13281 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
13282 | info_ptr += bytes_read; | |
13283 | break; | |
13284 | case DW_FORM_udata: | |
13285 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
13286 | info_ptr += bytes_read; | |
13287 | break; | |
13288 | case DW_FORM_ref1: | |
4568ecf9 DE |
13289 | DW_UNSND (attr) = (cu->header.offset.sect_off |
13290 | + read_1_byte (abfd, info_ptr)); | |
c906108c SS |
13291 | info_ptr += 1; |
13292 | break; | |
13293 | case DW_FORM_ref2: | |
4568ecf9 DE |
13294 | DW_UNSND (attr) = (cu->header.offset.sect_off |
13295 | + read_2_bytes (abfd, info_ptr)); | |
c906108c SS |
13296 | info_ptr += 2; |
13297 | break; | |
13298 | case DW_FORM_ref4: | |
4568ecf9 DE |
13299 | DW_UNSND (attr) = (cu->header.offset.sect_off |
13300 | + read_4_bytes (abfd, info_ptr)); | |
c906108c SS |
13301 | info_ptr += 4; |
13302 | break; | |
613e1657 | 13303 | case DW_FORM_ref8: |
4568ecf9 DE |
13304 | DW_UNSND (attr) = (cu->header.offset.sect_off |
13305 | + read_8_bytes (abfd, info_ptr)); | |
613e1657 KB |
13306 | info_ptr += 8; |
13307 | break; | |
55f1336d | 13308 | case DW_FORM_ref_sig8: |
348e048f DE |
13309 | /* Convert the signature to something we can record in DW_UNSND |
13310 | for later lookup. | |
13311 | NOTE: This is NULL if the type wasn't found. */ | |
13312 | DW_SIGNATURED_TYPE (attr) = | |
e319fa28 | 13313 | lookup_signatured_type (read_8_bytes (abfd, info_ptr)); |
348e048f DE |
13314 | info_ptr += 8; |
13315 | break; | |
c906108c | 13316 | case DW_FORM_ref_udata: |
4568ecf9 DE |
13317 | DW_UNSND (attr) = (cu->header.offset.sect_off |
13318 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); | |
c906108c SS |
13319 | info_ptr += bytes_read; |
13320 | break; | |
c906108c | 13321 | case DW_FORM_indirect: |
a8329558 KW |
13322 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
13323 | info_ptr += bytes_read; | |
dee91e82 | 13324 | info_ptr = read_attribute_value (reader, attr, form, info_ptr); |
a8329558 | 13325 | break; |
3019eac3 DE |
13326 | case DW_FORM_GNU_addr_index: |
13327 | if (reader->dwo_file == NULL) | |
13328 | { | |
13329 | /* For now flag a hard error. | |
13330 | Later we can turn this into a complaint. */ | |
13331 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
13332 | dwarf_form_name (form), | |
13333 | bfd_get_filename (abfd)); | |
13334 | } | |
13335 | DW_ADDR (attr) = read_addr_index_from_leb128 (cu, info_ptr, &bytes_read); | |
13336 | info_ptr += bytes_read; | |
13337 | break; | |
13338 | case DW_FORM_GNU_str_index: | |
13339 | if (reader->dwo_file == NULL) | |
13340 | { | |
13341 | /* For now flag a hard error. | |
13342 | Later we can turn this into a complaint if warranted. */ | |
13343 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
13344 | dwarf_form_name (form), | |
13345 | bfd_get_filename (abfd)); | |
13346 | } | |
13347 | { | |
13348 | ULONGEST str_index = | |
13349 | read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
13350 | ||
13351 | DW_STRING (attr) = read_str_index (reader, cu, str_index); | |
13352 | DW_STRING_IS_CANONICAL (attr) = 0; | |
13353 | info_ptr += bytes_read; | |
13354 | } | |
13355 | break; | |
c906108c | 13356 | default: |
8a3fe4f8 | 13357 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
13358 | dwarf_form_name (form), |
13359 | bfd_get_filename (abfd)); | |
c906108c | 13360 | } |
28e94949 | 13361 | |
36586728 TT |
13362 | /* Super hack. */ |
13363 | if (cu->per_cu->is_dwz && is_ref_attr (attr)) | |
13364 | attr->form = DW_FORM_GNU_ref_alt; | |
13365 | ||
28e94949 JB |
13366 | /* We have seen instances where the compiler tried to emit a byte |
13367 | size attribute of -1 which ended up being encoded as an unsigned | |
13368 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
13369 | an object of this size seems pretty unlikely so we can relatively | |
13370 | safely treat these cases as if the size attribute was invalid and | |
13371 | treat them as zero by default. */ | |
13372 | if (attr->name == DW_AT_byte_size | |
13373 | && form == DW_FORM_data4 | |
13374 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
13375 | { |
13376 | complaint | |
13377 | (&symfile_complaints, | |
43bbcdc2 PH |
13378 | _("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
13379 | hex_string (DW_UNSND (attr))); | |
01c66ae6 JB |
13380 | DW_UNSND (attr) = 0; |
13381 | } | |
28e94949 | 13382 | |
c906108c SS |
13383 | return info_ptr; |
13384 | } | |
13385 | ||
a8329558 KW |
13386 | /* Read an attribute described by an abbreviated attribute. */ |
13387 | ||
fe1b8b76 | 13388 | static gdb_byte * |
dee91e82 DE |
13389 | read_attribute (const struct die_reader_specs *reader, |
13390 | struct attribute *attr, struct attr_abbrev *abbrev, | |
13391 | gdb_byte *info_ptr) | |
a8329558 KW |
13392 | { |
13393 | attr->name = abbrev->name; | |
dee91e82 | 13394 | return read_attribute_value (reader, attr, abbrev->form, info_ptr); |
a8329558 KW |
13395 | } |
13396 | ||
0963b4bd | 13397 | /* Read dwarf information from a buffer. */ |
c906108c SS |
13398 | |
13399 | static unsigned int | |
fe1b8b76 | 13400 | read_1_byte (bfd *abfd, gdb_byte *buf) |
c906108c | 13401 | { |
fe1b8b76 | 13402 | return bfd_get_8 (abfd, buf); |
c906108c SS |
13403 | } |
13404 | ||
13405 | static int | |
fe1b8b76 | 13406 | read_1_signed_byte (bfd *abfd, gdb_byte *buf) |
c906108c | 13407 | { |
fe1b8b76 | 13408 | return bfd_get_signed_8 (abfd, buf); |
c906108c SS |
13409 | } |
13410 | ||
13411 | static unsigned int | |
fe1b8b76 | 13412 | read_2_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 13413 | { |
fe1b8b76 | 13414 | return bfd_get_16 (abfd, buf); |
c906108c SS |
13415 | } |
13416 | ||
21ae7a4d JK |
13417 | static int |
13418 | read_2_signed_bytes (bfd *abfd, gdb_byte *buf) | |
13419 | { | |
13420 | return bfd_get_signed_16 (abfd, buf); | |
13421 | } | |
13422 | ||
c906108c | 13423 | static unsigned int |
fe1b8b76 | 13424 | read_4_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 13425 | { |
fe1b8b76 | 13426 | return bfd_get_32 (abfd, buf); |
c906108c SS |
13427 | } |
13428 | ||
21ae7a4d JK |
13429 | static int |
13430 | read_4_signed_bytes (bfd *abfd, gdb_byte *buf) | |
13431 | { | |
13432 | return bfd_get_signed_32 (abfd, buf); | |
13433 | } | |
13434 | ||
93311388 | 13435 | static ULONGEST |
fe1b8b76 | 13436 | read_8_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 13437 | { |
fe1b8b76 | 13438 | return bfd_get_64 (abfd, buf); |
c906108c SS |
13439 | } |
13440 | ||
13441 | static CORE_ADDR | |
fe1b8b76 | 13442 | read_address (bfd *abfd, gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 13443 | unsigned int *bytes_read) |
c906108c | 13444 | { |
e7c27a73 | 13445 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
13446 | CORE_ADDR retval = 0; |
13447 | ||
107d2387 | 13448 | if (cu_header->signed_addr_p) |
c906108c | 13449 | { |
107d2387 AC |
13450 | switch (cu_header->addr_size) |
13451 | { | |
13452 | case 2: | |
fe1b8b76 | 13453 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
13454 | break; |
13455 | case 4: | |
fe1b8b76 | 13456 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
13457 | break; |
13458 | case 8: | |
fe1b8b76 | 13459 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
13460 | break; |
13461 | default: | |
8e65ff28 | 13462 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 13463 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 13464 | bfd_get_filename (abfd)); |
107d2387 AC |
13465 | } |
13466 | } | |
13467 | else | |
13468 | { | |
13469 | switch (cu_header->addr_size) | |
13470 | { | |
13471 | case 2: | |
fe1b8b76 | 13472 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
13473 | break; |
13474 | case 4: | |
fe1b8b76 | 13475 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
13476 | break; |
13477 | case 8: | |
fe1b8b76 | 13478 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
13479 | break; |
13480 | default: | |
8e65ff28 | 13481 | internal_error (__FILE__, __LINE__, |
a73c6dcd MS |
13482 | _("read_address: bad switch, " |
13483 | "unsigned [in module %s]"), | |
659b0389 | 13484 | bfd_get_filename (abfd)); |
107d2387 | 13485 | } |
c906108c | 13486 | } |
64367e0a | 13487 | |
107d2387 AC |
13488 | *bytes_read = cu_header->addr_size; |
13489 | return retval; | |
c906108c SS |
13490 | } |
13491 | ||
f7ef9339 | 13492 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
13493 | specification allows the initial length to take up either 4 bytes |
13494 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
13495 | bytes describe the length and all offsets will be 8 bytes in length | |
13496 | instead of 4. | |
13497 | ||
f7ef9339 KB |
13498 | An older, non-standard 64-bit format is also handled by this |
13499 | function. The older format in question stores the initial length | |
13500 | as an 8-byte quantity without an escape value. Lengths greater | |
13501 | than 2^32 aren't very common which means that the initial 4 bytes | |
13502 | is almost always zero. Since a length value of zero doesn't make | |
13503 | sense for the 32-bit format, this initial zero can be considered to | |
13504 | be an escape value which indicates the presence of the older 64-bit | |
13505 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
13506 | greater than 4GB. If it becomes necessary to handle lengths |
13507 | somewhat larger than 4GB, we could allow other small values (such | |
13508 | as the non-sensical values of 1, 2, and 3) to also be used as | |
13509 | escape values indicating the presence of the old format. | |
f7ef9339 | 13510 | |
917c78fc MK |
13511 | The value returned via bytes_read should be used to increment the |
13512 | relevant pointer after calling read_initial_length(). | |
c764a876 | 13513 | |
613e1657 KB |
13514 | [ Note: read_initial_length() and read_offset() are based on the |
13515 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 13516 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
13517 | from: |
13518 | ||
f7ef9339 | 13519 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
6e70227d | 13520 | |
613e1657 KB |
13521 | This document is only a draft and is subject to change. (So beware.) |
13522 | ||
f7ef9339 | 13523 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
13524 | determined empirically by examining 64-bit ELF files produced by |
13525 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
13526 | |
13527 | - Kevin, July 16, 2002 | |
613e1657 KB |
13528 | ] */ |
13529 | ||
13530 | static LONGEST | |
c764a876 | 13531 | read_initial_length (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read) |
613e1657 | 13532 | { |
fe1b8b76 | 13533 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 13534 | |
dd373385 | 13535 | if (length == 0xffffffff) |
613e1657 | 13536 | { |
fe1b8b76 | 13537 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 13538 | *bytes_read = 12; |
613e1657 | 13539 | } |
dd373385 | 13540 | else if (length == 0) |
f7ef9339 | 13541 | { |
dd373385 | 13542 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 13543 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 13544 | *bytes_read = 8; |
f7ef9339 | 13545 | } |
613e1657 KB |
13546 | else |
13547 | { | |
13548 | *bytes_read = 4; | |
613e1657 KB |
13549 | } |
13550 | ||
c764a876 DE |
13551 | return length; |
13552 | } | |
dd373385 | 13553 | |
c764a876 DE |
13554 | /* Cover function for read_initial_length. |
13555 | Returns the length of the object at BUF, and stores the size of the | |
13556 | initial length in *BYTES_READ and stores the size that offsets will be in | |
13557 | *OFFSET_SIZE. | |
13558 | If the initial length size is not equivalent to that specified in | |
13559 | CU_HEADER then issue a complaint. | |
13560 | This is useful when reading non-comp-unit headers. */ | |
dd373385 | 13561 | |
c764a876 DE |
13562 | static LONGEST |
13563 | read_checked_initial_length_and_offset (bfd *abfd, gdb_byte *buf, | |
13564 | const struct comp_unit_head *cu_header, | |
13565 | unsigned int *bytes_read, | |
13566 | unsigned int *offset_size) | |
13567 | { | |
13568 | LONGEST length = read_initial_length (abfd, buf, bytes_read); | |
13569 | ||
13570 | gdb_assert (cu_header->initial_length_size == 4 | |
13571 | || cu_header->initial_length_size == 8 | |
13572 | || cu_header->initial_length_size == 12); | |
13573 | ||
13574 | if (cu_header->initial_length_size != *bytes_read) | |
13575 | complaint (&symfile_complaints, | |
13576 | _("intermixed 32-bit and 64-bit DWARF sections")); | |
dd373385 | 13577 | |
c764a876 | 13578 | *offset_size = (*bytes_read == 4) ? 4 : 8; |
dd373385 | 13579 | return length; |
613e1657 KB |
13580 | } |
13581 | ||
13582 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 13583 | given by cu_header->offset_size. */ |
613e1657 KB |
13584 | |
13585 | static LONGEST | |
fe1b8b76 | 13586 | read_offset (bfd *abfd, gdb_byte *buf, const struct comp_unit_head *cu_header, |
891d2f0b | 13587 | unsigned int *bytes_read) |
c764a876 DE |
13588 | { |
13589 | LONGEST offset = read_offset_1 (abfd, buf, cu_header->offset_size); | |
9a619af0 | 13590 | |
c764a876 DE |
13591 | *bytes_read = cu_header->offset_size; |
13592 | return offset; | |
13593 | } | |
13594 | ||
13595 | /* Read an offset from the data stream. */ | |
13596 | ||
13597 | static LONGEST | |
13598 | read_offset_1 (bfd *abfd, gdb_byte *buf, unsigned int offset_size) | |
613e1657 KB |
13599 | { |
13600 | LONGEST retval = 0; | |
13601 | ||
c764a876 | 13602 | switch (offset_size) |
613e1657 KB |
13603 | { |
13604 | case 4: | |
fe1b8b76 | 13605 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
13606 | break; |
13607 | case 8: | |
fe1b8b76 | 13608 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
13609 | break; |
13610 | default: | |
8e65ff28 | 13611 | internal_error (__FILE__, __LINE__, |
c764a876 | 13612 | _("read_offset_1: bad switch [in module %s]"), |
659b0389 | 13613 | bfd_get_filename (abfd)); |
613e1657 KB |
13614 | } |
13615 | ||
917c78fc | 13616 | return retval; |
613e1657 KB |
13617 | } |
13618 | ||
fe1b8b76 JB |
13619 | static gdb_byte * |
13620 | read_n_bytes (bfd *abfd, gdb_byte *buf, unsigned int size) | |
c906108c SS |
13621 | { |
13622 | /* If the size of a host char is 8 bits, we can return a pointer | |
13623 | to the buffer, otherwise we have to copy the data to a buffer | |
13624 | allocated on the temporary obstack. */ | |
4bdf3d34 | 13625 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 13626 | return buf; |
c906108c SS |
13627 | } |
13628 | ||
13629 | static char * | |
9b1c24c8 | 13630 | read_direct_string (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c SS |
13631 | { |
13632 | /* If the size of a host char is 8 bits, we can return a pointer | |
13633 | to the string, otherwise we have to copy the string to a buffer | |
13634 | allocated on the temporary obstack. */ | |
4bdf3d34 | 13635 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
13636 | if (*buf == '\0') |
13637 | { | |
13638 | *bytes_read_ptr = 1; | |
13639 | return NULL; | |
13640 | } | |
fe1b8b76 JB |
13641 | *bytes_read_ptr = strlen ((char *) buf) + 1; |
13642 | return (char *) buf; | |
4bdf3d34 JJ |
13643 | } |
13644 | ||
13645 | static char * | |
cf2c3c16 | 13646 | read_indirect_string_at_offset (bfd *abfd, LONGEST str_offset) |
4bdf3d34 | 13647 | { |
be391dca | 13648 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwarf2_per_objfile->str); |
dce234bc | 13649 | if (dwarf2_per_objfile->str.buffer == NULL) |
cf2c3c16 TT |
13650 | error (_("DW_FORM_strp used without .debug_str section [in module %s]"), |
13651 | bfd_get_filename (abfd)); | |
dce234bc | 13652 | if (str_offset >= dwarf2_per_objfile->str.size) |
cf2c3c16 TT |
13653 | error (_("DW_FORM_strp pointing outside of " |
13654 | ".debug_str section [in module %s]"), | |
13655 | bfd_get_filename (abfd)); | |
4bdf3d34 | 13656 | gdb_assert (HOST_CHAR_BIT == 8); |
dce234bc | 13657 | if (dwarf2_per_objfile->str.buffer[str_offset] == '\0') |
4bdf3d34 | 13658 | return NULL; |
dce234bc | 13659 | return (char *) (dwarf2_per_objfile->str.buffer + str_offset); |
c906108c SS |
13660 | } |
13661 | ||
36586728 TT |
13662 | /* Read a string at offset STR_OFFSET in the .debug_str section from |
13663 | the .dwz file DWZ. Throw an error if the offset is too large. If | |
13664 | the string consists of a single NUL byte, return NULL; otherwise | |
13665 | return a pointer to the string. */ | |
13666 | ||
13667 | static char * | |
13668 | read_indirect_string_from_dwz (struct dwz_file *dwz, LONGEST str_offset) | |
13669 | { | |
13670 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwz->str); | |
13671 | ||
13672 | if (dwz->str.buffer == NULL) | |
13673 | error (_("DW_FORM_GNU_strp_alt used without .debug_str " | |
13674 | "section [in module %s]"), | |
13675 | bfd_get_filename (dwz->dwz_bfd)); | |
13676 | if (str_offset >= dwz->str.size) | |
13677 | error (_("DW_FORM_GNU_strp_alt pointing outside of " | |
13678 | ".debug_str section [in module %s]"), | |
13679 | bfd_get_filename (dwz->dwz_bfd)); | |
13680 | gdb_assert (HOST_CHAR_BIT == 8); | |
13681 | if (dwz->str.buffer[str_offset] == '\0') | |
13682 | return NULL; | |
13683 | return (char *) (dwz->str.buffer + str_offset); | |
13684 | } | |
13685 | ||
cf2c3c16 TT |
13686 | static char * |
13687 | read_indirect_string (bfd *abfd, gdb_byte *buf, | |
13688 | const struct comp_unit_head *cu_header, | |
13689 | unsigned int *bytes_read_ptr) | |
13690 | { | |
13691 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
13692 | ||
13693 | return read_indirect_string_at_offset (abfd, str_offset); | |
13694 | } | |
13695 | ||
12df843f | 13696 | static ULONGEST |
fe1b8b76 | 13697 | read_unsigned_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 13698 | { |
12df843f | 13699 | ULONGEST result; |
ce5d95e1 | 13700 | unsigned int num_read; |
c906108c SS |
13701 | int i, shift; |
13702 | unsigned char byte; | |
13703 | ||
13704 | result = 0; | |
13705 | shift = 0; | |
13706 | num_read = 0; | |
13707 | i = 0; | |
13708 | while (1) | |
13709 | { | |
fe1b8b76 | 13710 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
13711 | buf++; |
13712 | num_read++; | |
12df843f | 13713 | result |= ((ULONGEST) (byte & 127) << shift); |
c906108c SS |
13714 | if ((byte & 128) == 0) |
13715 | { | |
13716 | break; | |
13717 | } | |
13718 | shift += 7; | |
13719 | } | |
13720 | *bytes_read_ptr = num_read; | |
13721 | return result; | |
13722 | } | |
13723 | ||
12df843f | 13724 | static LONGEST |
fe1b8b76 | 13725 | read_signed_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 13726 | { |
12df843f | 13727 | LONGEST result; |
77e0b926 | 13728 | int i, shift, num_read; |
c906108c SS |
13729 | unsigned char byte; |
13730 | ||
13731 | result = 0; | |
13732 | shift = 0; | |
c906108c SS |
13733 | num_read = 0; |
13734 | i = 0; | |
13735 | while (1) | |
13736 | { | |
fe1b8b76 | 13737 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
13738 | buf++; |
13739 | num_read++; | |
12df843f | 13740 | result |= ((LONGEST) (byte & 127) << shift); |
c906108c SS |
13741 | shift += 7; |
13742 | if ((byte & 128) == 0) | |
13743 | { | |
13744 | break; | |
13745 | } | |
13746 | } | |
77e0b926 | 13747 | if ((shift < 8 * sizeof (result)) && (byte & 0x40)) |
12df843f | 13748 | result |= -(((LONGEST) 1) << shift); |
c906108c SS |
13749 | *bytes_read_ptr = num_read; |
13750 | return result; | |
13751 | } | |
13752 | ||
3019eac3 DE |
13753 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
13754 | ADDR_BASE is the DW_AT_GNU_addr_base attribute or zero. | |
13755 | ADDR_SIZE is the size of addresses from the CU header. */ | |
13756 | ||
13757 | static CORE_ADDR | |
13758 | read_addr_index_1 (unsigned int addr_index, ULONGEST addr_base, int addr_size) | |
13759 | { | |
13760 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
13761 | bfd *abfd = objfile->obfd; | |
13762 | const gdb_byte *info_ptr; | |
13763 | ||
13764 | dwarf2_read_section (objfile, &dwarf2_per_objfile->addr); | |
13765 | if (dwarf2_per_objfile->addr.buffer == NULL) | |
13766 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), | |
13767 | objfile->name); | |
13768 | if (addr_base + addr_index * addr_size >= dwarf2_per_objfile->addr.size) | |
13769 | error (_("DW_FORM_addr_index pointing outside of " | |
13770 | ".debug_addr section [in module %s]"), | |
13771 | objfile->name); | |
13772 | info_ptr = (dwarf2_per_objfile->addr.buffer | |
13773 | + addr_base + addr_index * addr_size); | |
13774 | if (addr_size == 4) | |
13775 | return bfd_get_32 (abfd, info_ptr); | |
13776 | else | |
13777 | return bfd_get_64 (abfd, info_ptr); | |
13778 | } | |
13779 | ||
13780 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
13781 | ||
13782 | static CORE_ADDR | |
13783 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
13784 | { | |
13785 | return read_addr_index_1 (addr_index, cu->addr_base, cu->header.addr_size); | |
13786 | } | |
13787 | ||
13788 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
13789 | ||
13790 | static CORE_ADDR | |
13791 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, gdb_byte *info_ptr, | |
13792 | unsigned int *bytes_read) | |
13793 | { | |
13794 | bfd *abfd = cu->objfile->obfd; | |
13795 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
13796 | ||
13797 | return read_addr_index (cu, addr_index); | |
13798 | } | |
13799 | ||
13800 | /* Data structure to pass results from dwarf2_read_addr_index_reader | |
13801 | back to dwarf2_read_addr_index. */ | |
13802 | ||
13803 | struct dwarf2_read_addr_index_data | |
13804 | { | |
13805 | ULONGEST addr_base; | |
13806 | int addr_size; | |
13807 | }; | |
13808 | ||
13809 | /* die_reader_func for dwarf2_read_addr_index. */ | |
13810 | ||
13811 | static void | |
13812 | dwarf2_read_addr_index_reader (const struct die_reader_specs *reader, | |
13813 | gdb_byte *info_ptr, | |
13814 | struct die_info *comp_unit_die, | |
13815 | int has_children, | |
13816 | void *data) | |
13817 | { | |
13818 | struct dwarf2_cu *cu = reader->cu; | |
13819 | struct dwarf2_read_addr_index_data *aidata = | |
13820 | (struct dwarf2_read_addr_index_data *) data; | |
13821 | ||
13822 | aidata->addr_base = cu->addr_base; | |
13823 | aidata->addr_size = cu->header.addr_size; | |
13824 | } | |
13825 | ||
13826 | /* Given an index in .debug_addr, fetch the value. | |
13827 | NOTE: This can be called during dwarf expression evaluation, | |
13828 | long after the debug information has been read, and thus per_cu->cu | |
13829 | may no longer exist. */ | |
13830 | ||
13831 | CORE_ADDR | |
13832 | dwarf2_read_addr_index (struct dwarf2_per_cu_data *per_cu, | |
13833 | unsigned int addr_index) | |
13834 | { | |
13835 | struct objfile *objfile = per_cu->objfile; | |
13836 | struct dwarf2_cu *cu = per_cu->cu; | |
13837 | ULONGEST addr_base; | |
13838 | int addr_size; | |
13839 | ||
13840 | /* This is intended to be called from outside this file. */ | |
13841 | dw2_setup (objfile); | |
13842 | ||
13843 | /* We need addr_base and addr_size. | |
13844 | If we don't have PER_CU->cu, we have to get it. | |
13845 | Nasty, but the alternative is storing the needed info in PER_CU, | |
13846 | which at this point doesn't seem justified: it's not clear how frequently | |
13847 | it would get used and it would increase the size of every PER_CU. | |
13848 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
13849 | so we're not in uncharted territory here. | |
13850 | Alas we need to be a bit more complicated as addr_base is contained | |
13851 | in the DIE. | |
13852 | ||
13853 | We don't need to read the entire CU(/TU). | |
13854 | We just need the header and top level die. | |
a1b64ce1 | 13855 | |
3019eac3 | 13856 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 13857 | For now we skip this optimization. */ |
3019eac3 DE |
13858 | |
13859 | if (cu != NULL) | |
13860 | { | |
13861 | addr_base = cu->addr_base; | |
13862 | addr_size = cu->header.addr_size; | |
13863 | } | |
13864 | else | |
13865 | { | |
13866 | struct dwarf2_read_addr_index_data aidata; | |
13867 | ||
a1b64ce1 DE |
13868 | /* Note: We can't use init_cutu_and_read_dies_simple here, |
13869 | we need addr_base. */ | |
13870 | init_cutu_and_read_dies (per_cu, NULL, 0, 0, | |
13871 | dwarf2_read_addr_index_reader, &aidata); | |
3019eac3 DE |
13872 | addr_base = aidata.addr_base; |
13873 | addr_size = aidata.addr_size; | |
13874 | } | |
13875 | ||
13876 | return read_addr_index_1 (addr_index, addr_base, addr_size); | |
13877 | } | |
13878 | ||
13879 | /* Given a DW_AT_str_index, fetch the string. */ | |
13880 | ||
13881 | static char * | |
13882 | read_str_index (const struct die_reader_specs *reader, | |
13883 | struct dwarf2_cu *cu, ULONGEST str_index) | |
13884 | { | |
13885 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
13886 | const char *dwo_name = objfile->name; | |
13887 | bfd *abfd = objfile->obfd; | |
13888 | struct dwo_sections *sections = &reader->dwo_file->sections; | |
13889 | gdb_byte *info_ptr; | |
13890 | ULONGEST str_offset; | |
13891 | ||
13892 | dwarf2_read_section (objfile, §ions->str); | |
13893 | dwarf2_read_section (objfile, §ions->str_offsets); | |
13894 | if (sections->str.buffer == NULL) | |
13895 | error (_("DW_FORM_str_index used without .debug_str.dwo section" | |
13896 | " in CU at offset 0x%lx [in module %s]"), | |
13897 | (long) cu->header.offset.sect_off, dwo_name); | |
13898 | if (sections->str_offsets.buffer == NULL) | |
13899 | error (_("DW_FORM_str_index used without .debug_str_offsets.dwo section" | |
13900 | " in CU at offset 0x%lx [in module %s]"), | |
13901 | (long) cu->header.offset.sect_off, dwo_name); | |
13902 | if (str_index * cu->header.offset_size >= sections->str_offsets.size) | |
13903 | error (_("DW_FORM_str_index pointing outside of .debug_str_offsets.dwo" | |
13904 | " section in CU at offset 0x%lx [in module %s]"), | |
13905 | (long) cu->header.offset.sect_off, dwo_name); | |
13906 | info_ptr = (sections->str_offsets.buffer | |
13907 | + str_index * cu->header.offset_size); | |
13908 | if (cu->header.offset_size == 4) | |
13909 | str_offset = bfd_get_32 (abfd, info_ptr); | |
13910 | else | |
13911 | str_offset = bfd_get_64 (abfd, info_ptr); | |
13912 | if (str_offset >= sections->str.size) | |
13913 | error (_("Offset from DW_FORM_str_index pointing outside of" | |
13914 | " .debug_str.dwo section in CU at offset 0x%lx [in module %s]"), | |
13915 | (long) cu->header.offset.sect_off, dwo_name); | |
13916 | return (char *) (sections->str.buffer + str_offset); | |
13917 | } | |
13918 | ||
3019eac3 DE |
13919 | /* Return the length of an LEB128 number in BUF. */ |
13920 | ||
13921 | static int | |
13922 | leb128_size (const gdb_byte *buf) | |
13923 | { | |
13924 | const gdb_byte *begin = buf; | |
13925 | gdb_byte byte; | |
13926 | ||
13927 | while (1) | |
13928 | { | |
13929 | byte = *buf++; | |
13930 | if ((byte & 128) == 0) | |
13931 | return buf - begin; | |
13932 | } | |
13933 | } | |
13934 | ||
c906108c | 13935 | static void |
e142c38c | 13936 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
13937 | { |
13938 | switch (lang) | |
13939 | { | |
13940 | case DW_LANG_C89: | |
76bee0cc | 13941 | case DW_LANG_C99: |
c906108c | 13942 | case DW_LANG_C: |
e142c38c | 13943 | cu->language = language_c; |
c906108c SS |
13944 | break; |
13945 | case DW_LANG_C_plus_plus: | |
e142c38c | 13946 | cu->language = language_cplus; |
c906108c | 13947 | break; |
6aecb9c2 JB |
13948 | case DW_LANG_D: |
13949 | cu->language = language_d; | |
13950 | break; | |
c906108c SS |
13951 | case DW_LANG_Fortran77: |
13952 | case DW_LANG_Fortran90: | |
b21b22e0 | 13953 | case DW_LANG_Fortran95: |
e142c38c | 13954 | cu->language = language_fortran; |
c906108c | 13955 | break; |
a766d390 DE |
13956 | case DW_LANG_Go: |
13957 | cu->language = language_go; | |
13958 | break; | |
c906108c | 13959 | case DW_LANG_Mips_Assembler: |
e142c38c | 13960 | cu->language = language_asm; |
c906108c | 13961 | break; |
bebd888e | 13962 | case DW_LANG_Java: |
e142c38c | 13963 | cu->language = language_java; |
bebd888e | 13964 | break; |
c906108c | 13965 | case DW_LANG_Ada83: |
8aaf0b47 | 13966 | case DW_LANG_Ada95: |
bc5f45f8 JB |
13967 | cu->language = language_ada; |
13968 | break; | |
72019c9c GM |
13969 | case DW_LANG_Modula2: |
13970 | cu->language = language_m2; | |
13971 | break; | |
fe8e67fd PM |
13972 | case DW_LANG_Pascal83: |
13973 | cu->language = language_pascal; | |
13974 | break; | |
22566fbd DJ |
13975 | case DW_LANG_ObjC: |
13976 | cu->language = language_objc; | |
13977 | break; | |
c906108c SS |
13978 | case DW_LANG_Cobol74: |
13979 | case DW_LANG_Cobol85: | |
c906108c | 13980 | default: |
e142c38c | 13981 | cu->language = language_minimal; |
c906108c SS |
13982 | break; |
13983 | } | |
e142c38c | 13984 | cu->language_defn = language_def (cu->language); |
c906108c SS |
13985 | } |
13986 | ||
13987 | /* Return the named attribute or NULL if not there. */ | |
13988 | ||
13989 | static struct attribute * | |
e142c38c | 13990 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 13991 | { |
a48e046c | 13992 | for (;;) |
c906108c | 13993 | { |
a48e046c TT |
13994 | unsigned int i; |
13995 | struct attribute *spec = NULL; | |
13996 | ||
13997 | for (i = 0; i < die->num_attrs; ++i) | |
13998 | { | |
13999 | if (die->attrs[i].name == name) | |
14000 | return &die->attrs[i]; | |
14001 | if (die->attrs[i].name == DW_AT_specification | |
14002 | || die->attrs[i].name == DW_AT_abstract_origin) | |
14003 | spec = &die->attrs[i]; | |
14004 | } | |
14005 | ||
14006 | if (!spec) | |
14007 | break; | |
c906108c | 14008 | |
f2f0e013 | 14009 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 14010 | } |
c5aa993b | 14011 | |
c906108c SS |
14012 | return NULL; |
14013 | } | |
14014 | ||
348e048f DE |
14015 | /* Return the named attribute or NULL if not there, |
14016 | but do not follow DW_AT_specification, etc. | |
14017 | This is for use in contexts where we're reading .debug_types dies. | |
14018 | Following DW_AT_specification, DW_AT_abstract_origin will take us | |
14019 | back up the chain, and we want to go down. */ | |
14020 | ||
14021 | static struct attribute * | |
45e58e77 | 14022 | dwarf2_attr_no_follow (struct die_info *die, unsigned int name) |
348e048f DE |
14023 | { |
14024 | unsigned int i; | |
14025 | ||
14026 | for (i = 0; i < die->num_attrs; ++i) | |
14027 | if (die->attrs[i].name == name) | |
14028 | return &die->attrs[i]; | |
14029 | ||
14030 | return NULL; | |
14031 | } | |
14032 | ||
05cf31d1 JB |
14033 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
14034 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 14035 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
14036 | |
14037 | static int | |
14038 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
14039 | { | |
14040 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
14041 | ||
14042 | return (attr && DW_UNSND (attr)); | |
14043 | } | |
14044 | ||
3ca72b44 | 14045 | static int |
e142c38c | 14046 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 14047 | { |
05cf31d1 JB |
14048 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
14049 | which value is non-zero. However, we have to be careful with | |
14050 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
14051 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
14052 | end up accidently finding a declaration attribute that belongs | |
14053 | to a different DIE referenced by the specification attribute, | |
14054 | even though the given DIE does not have a declaration attribute. */ | |
14055 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
14056 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
14057 | } |
14058 | ||
63d06c5c | 14059 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 14060 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
14061 | containing the return value on output. If there is no |
14062 | specification, but there is an abstract origin, that is | |
14063 | returned. */ | |
63d06c5c DC |
14064 | |
14065 | static struct die_info * | |
f2f0e013 | 14066 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 14067 | { |
f2f0e013 DJ |
14068 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
14069 | *spec_cu); | |
63d06c5c | 14070 | |
edb3359d DJ |
14071 | if (spec_attr == NULL) |
14072 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
14073 | ||
63d06c5c DC |
14074 | if (spec_attr == NULL) |
14075 | return NULL; | |
14076 | else | |
f2f0e013 | 14077 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 14078 | } |
c906108c | 14079 | |
debd256d | 14080 | /* Free the line_header structure *LH, and any arrays and strings it |
ae2de4f8 DE |
14081 | refers to. |
14082 | NOTE: This is also used as a "cleanup" function. */ | |
14083 | ||
debd256d JB |
14084 | static void |
14085 | free_line_header (struct line_header *lh) | |
14086 | { | |
14087 | if (lh->standard_opcode_lengths) | |
a8bc7b56 | 14088 | xfree (lh->standard_opcode_lengths); |
debd256d JB |
14089 | |
14090 | /* Remember that all the lh->file_names[i].name pointers are | |
14091 | pointers into debug_line_buffer, and don't need to be freed. */ | |
14092 | if (lh->file_names) | |
a8bc7b56 | 14093 | xfree (lh->file_names); |
debd256d JB |
14094 | |
14095 | /* Similarly for the include directory names. */ | |
14096 | if (lh->include_dirs) | |
a8bc7b56 | 14097 | xfree (lh->include_dirs); |
debd256d | 14098 | |
a8bc7b56 | 14099 | xfree (lh); |
debd256d JB |
14100 | } |
14101 | ||
debd256d | 14102 | /* Add an entry to LH's include directory table. */ |
ae2de4f8 | 14103 | |
debd256d JB |
14104 | static void |
14105 | add_include_dir (struct line_header *lh, char *include_dir) | |
c906108c | 14106 | { |
debd256d JB |
14107 | /* Grow the array if necessary. */ |
14108 | if (lh->include_dirs_size == 0) | |
c5aa993b | 14109 | { |
debd256d JB |
14110 | lh->include_dirs_size = 1; /* for testing */ |
14111 | lh->include_dirs = xmalloc (lh->include_dirs_size | |
14112 | * sizeof (*lh->include_dirs)); | |
14113 | } | |
14114 | else if (lh->num_include_dirs >= lh->include_dirs_size) | |
14115 | { | |
14116 | lh->include_dirs_size *= 2; | |
14117 | lh->include_dirs = xrealloc (lh->include_dirs, | |
14118 | (lh->include_dirs_size | |
14119 | * sizeof (*lh->include_dirs))); | |
c5aa993b | 14120 | } |
c906108c | 14121 | |
debd256d JB |
14122 | lh->include_dirs[lh->num_include_dirs++] = include_dir; |
14123 | } | |
6e70227d | 14124 | |
debd256d | 14125 | /* Add an entry to LH's file name table. */ |
ae2de4f8 | 14126 | |
debd256d JB |
14127 | static void |
14128 | add_file_name (struct line_header *lh, | |
14129 | char *name, | |
14130 | unsigned int dir_index, | |
14131 | unsigned int mod_time, | |
14132 | unsigned int length) | |
14133 | { | |
14134 | struct file_entry *fe; | |
14135 | ||
14136 | /* Grow the array if necessary. */ | |
14137 | if (lh->file_names_size == 0) | |
14138 | { | |
14139 | lh->file_names_size = 1; /* for testing */ | |
14140 | lh->file_names = xmalloc (lh->file_names_size | |
14141 | * sizeof (*lh->file_names)); | |
14142 | } | |
14143 | else if (lh->num_file_names >= lh->file_names_size) | |
14144 | { | |
14145 | lh->file_names_size *= 2; | |
14146 | lh->file_names = xrealloc (lh->file_names, | |
14147 | (lh->file_names_size | |
14148 | * sizeof (*lh->file_names))); | |
14149 | } | |
14150 | ||
14151 | fe = &lh->file_names[lh->num_file_names++]; | |
14152 | fe->name = name; | |
14153 | fe->dir_index = dir_index; | |
14154 | fe->mod_time = mod_time; | |
14155 | fe->length = length; | |
aaa75496 | 14156 | fe->included_p = 0; |
cb1df416 | 14157 | fe->symtab = NULL; |
debd256d | 14158 | } |
6e70227d | 14159 | |
36586728 TT |
14160 | /* A convenience function to find the proper .debug_line section for a |
14161 | CU. */ | |
14162 | ||
14163 | static struct dwarf2_section_info * | |
14164 | get_debug_line_section (struct dwarf2_cu *cu) | |
14165 | { | |
14166 | struct dwarf2_section_info *section; | |
14167 | ||
14168 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
14169 | DWO file. */ | |
14170 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
14171 | section = &cu->dwo_unit->dwo_file->sections.line; | |
14172 | else if (cu->per_cu->is_dwz) | |
14173 | { | |
14174 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
14175 | ||
14176 | section = &dwz->line; | |
14177 | } | |
14178 | else | |
14179 | section = &dwarf2_per_objfile->line; | |
14180 | ||
14181 | return section; | |
14182 | } | |
14183 | ||
debd256d | 14184 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 14185 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 14186 | to a struct line_header, allocated using xmalloc. |
debd256d JB |
14187 | |
14188 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
14189 | the returned object point into the dwarf line section buffer, |
14190 | and must not be freed. */ | |
ae2de4f8 | 14191 | |
debd256d | 14192 | static struct line_header * |
3019eac3 | 14193 | dwarf_decode_line_header (unsigned int offset, struct dwarf2_cu *cu) |
debd256d JB |
14194 | { |
14195 | struct cleanup *back_to; | |
14196 | struct line_header *lh; | |
fe1b8b76 | 14197 | gdb_byte *line_ptr; |
c764a876 | 14198 | unsigned int bytes_read, offset_size; |
debd256d JB |
14199 | int i; |
14200 | char *cur_dir, *cur_file; | |
3019eac3 DE |
14201 | struct dwarf2_section_info *section; |
14202 | bfd *abfd; | |
14203 | ||
36586728 | 14204 | section = get_debug_line_section (cu); |
3019eac3 DE |
14205 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); |
14206 | if (section->buffer == NULL) | |
debd256d | 14207 | { |
3019eac3 DE |
14208 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
14209 | complaint (&symfile_complaints, _("missing .debug_line.dwo section")); | |
14210 | else | |
14211 | complaint (&symfile_complaints, _("missing .debug_line section")); | |
debd256d JB |
14212 | return 0; |
14213 | } | |
14214 | ||
fceca515 DE |
14215 | /* We can't do this until we know the section is non-empty. |
14216 | Only then do we know we have such a section. */ | |
14217 | abfd = section->asection->owner; | |
14218 | ||
a738430d MK |
14219 | /* Make sure that at least there's room for the total_length field. |
14220 | That could be 12 bytes long, but we're just going to fudge that. */ | |
3019eac3 | 14221 | if (offset + 4 >= section->size) |
debd256d | 14222 | { |
4d3c2250 | 14223 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
14224 | return 0; |
14225 | } | |
14226 | ||
14227 | lh = xmalloc (sizeof (*lh)); | |
14228 | memset (lh, 0, sizeof (*lh)); | |
14229 | back_to = make_cleanup ((make_cleanup_ftype *) free_line_header, | |
14230 | (void *) lh); | |
14231 | ||
3019eac3 | 14232 | line_ptr = section->buffer + offset; |
debd256d | 14233 | |
a738430d | 14234 | /* Read in the header. */ |
6e70227d | 14235 | lh->total_length = |
c764a876 DE |
14236 | read_checked_initial_length_and_offset (abfd, line_ptr, &cu->header, |
14237 | &bytes_read, &offset_size); | |
debd256d | 14238 | line_ptr += bytes_read; |
3019eac3 | 14239 | if (line_ptr + lh->total_length > (section->buffer + section->size)) |
debd256d | 14240 | { |
4d3c2250 | 14241 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
14242 | return 0; |
14243 | } | |
14244 | lh->statement_program_end = line_ptr + lh->total_length; | |
14245 | lh->version = read_2_bytes (abfd, line_ptr); | |
14246 | line_ptr += 2; | |
c764a876 DE |
14247 | lh->header_length = read_offset_1 (abfd, line_ptr, offset_size); |
14248 | line_ptr += offset_size; | |
debd256d JB |
14249 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); |
14250 | line_ptr += 1; | |
2dc7f7b3 TT |
14251 | if (lh->version >= 4) |
14252 | { | |
14253 | lh->maximum_ops_per_instruction = read_1_byte (abfd, line_ptr); | |
14254 | line_ptr += 1; | |
14255 | } | |
14256 | else | |
14257 | lh->maximum_ops_per_instruction = 1; | |
14258 | ||
14259 | if (lh->maximum_ops_per_instruction == 0) | |
14260 | { | |
14261 | lh->maximum_ops_per_instruction = 1; | |
14262 | complaint (&symfile_complaints, | |
3e43a32a MS |
14263 | _("invalid maximum_ops_per_instruction " |
14264 | "in `.debug_line' section")); | |
2dc7f7b3 TT |
14265 | } |
14266 | ||
debd256d JB |
14267 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); |
14268 | line_ptr += 1; | |
14269 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
14270 | line_ptr += 1; | |
14271 | lh->line_range = read_1_byte (abfd, line_ptr); | |
14272 | line_ptr += 1; | |
14273 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
14274 | line_ptr += 1; | |
14275 | lh->standard_opcode_lengths | |
fe1b8b76 | 14276 | = xmalloc (lh->opcode_base * sizeof (lh->standard_opcode_lengths[0])); |
debd256d JB |
14277 | |
14278 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
14279 | for (i = 1; i < lh->opcode_base; ++i) | |
14280 | { | |
14281 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
14282 | line_ptr += 1; | |
14283 | } | |
14284 | ||
a738430d | 14285 | /* Read directory table. */ |
9b1c24c8 | 14286 | while ((cur_dir = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) |
debd256d JB |
14287 | { |
14288 | line_ptr += bytes_read; | |
14289 | add_include_dir (lh, cur_dir); | |
14290 | } | |
14291 | line_ptr += bytes_read; | |
14292 | ||
a738430d | 14293 | /* Read file name table. */ |
9b1c24c8 | 14294 | while ((cur_file = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) |
debd256d JB |
14295 | { |
14296 | unsigned int dir_index, mod_time, length; | |
14297 | ||
14298 | line_ptr += bytes_read; | |
14299 | dir_index = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
14300 | line_ptr += bytes_read; | |
14301 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
14302 | line_ptr += bytes_read; | |
14303 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
14304 | line_ptr += bytes_read; | |
14305 | ||
14306 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
14307 | } | |
14308 | line_ptr += bytes_read; | |
6e70227d | 14309 | lh->statement_program_start = line_ptr; |
debd256d | 14310 | |
3019eac3 | 14311 | if (line_ptr > (section->buffer + section->size)) |
4d3c2250 | 14312 | complaint (&symfile_complaints, |
3e43a32a MS |
14313 | _("line number info header doesn't " |
14314 | "fit in `.debug_line' section")); | |
debd256d JB |
14315 | |
14316 | discard_cleanups (back_to); | |
14317 | return lh; | |
14318 | } | |
c906108c | 14319 | |
c6da4cef DE |
14320 | /* Subroutine of dwarf_decode_lines to simplify it. |
14321 | Return the file name of the psymtab for included file FILE_INDEX | |
14322 | in line header LH of PST. | |
14323 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
14324 | If space for the result is malloc'd, it will be freed by a cleanup. | |
14325 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. */ | |
14326 | ||
14327 | static char * | |
14328 | psymtab_include_file_name (const struct line_header *lh, int file_index, | |
14329 | const struct partial_symtab *pst, | |
14330 | const char *comp_dir) | |
14331 | { | |
14332 | const struct file_entry fe = lh->file_names [file_index]; | |
14333 | char *include_name = fe.name; | |
14334 | char *include_name_to_compare = include_name; | |
14335 | char *dir_name = NULL; | |
72b9f47f TT |
14336 | const char *pst_filename; |
14337 | char *copied_name = NULL; | |
c6da4cef DE |
14338 | int file_is_pst; |
14339 | ||
14340 | if (fe.dir_index) | |
14341 | dir_name = lh->include_dirs[fe.dir_index - 1]; | |
14342 | ||
14343 | if (!IS_ABSOLUTE_PATH (include_name) | |
14344 | && (dir_name != NULL || comp_dir != NULL)) | |
14345 | { | |
14346 | /* Avoid creating a duplicate psymtab for PST. | |
14347 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
14348 | Before we do the comparison, however, we need to account | |
14349 | for DIR_NAME and COMP_DIR. | |
14350 | First prepend dir_name (if non-NULL). If we still don't | |
14351 | have an absolute path prepend comp_dir (if non-NULL). | |
14352 | However, the directory we record in the include-file's | |
14353 | psymtab does not contain COMP_DIR (to match the | |
14354 | corresponding symtab(s)). | |
14355 | ||
14356 | Example: | |
14357 | ||
14358 | bash$ cd /tmp | |
14359 | bash$ gcc -g ./hello.c | |
14360 | include_name = "hello.c" | |
14361 | dir_name = "." | |
14362 | DW_AT_comp_dir = comp_dir = "/tmp" | |
14363 | DW_AT_name = "./hello.c" */ | |
14364 | ||
14365 | if (dir_name != NULL) | |
14366 | { | |
14367 | include_name = concat (dir_name, SLASH_STRING, | |
14368 | include_name, (char *)NULL); | |
14369 | include_name_to_compare = include_name; | |
14370 | make_cleanup (xfree, include_name); | |
14371 | } | |
14372 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
14373 | { | |
14374 | include_name_to_compare = concat (comp_dir, SLASH_STRING, | |
14375 | include_name, (char *)NULL); | |
14376 | } | |
14377 | } | |
14378 | ||
14379 | pst_filename = pst->filename; | |
14380 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) | |
14381 | { | |
72b9f47f TT |
14382 | copied_name = concat (pst->dirname, SLASH_STRING, |
14383 | pst_filename, (char *)NULL); | |
14384 | pst_filename = copied_name; | |
c6da4cef DE |
14385 | } |
14386 | ||
1e3fad37 | 14387 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef DE |
14388 | |
14389 | if (include_name_to_compare != include_name) | |
14390 | xfree (include_name_to_compare); | |
72b9f47f TT |
14391 | if (copied_name != NULL) |
14392 | xfree (copied_name); | |
c6da4cef DE |
14393 | |
14394 | if (file_is_pst) | |
14395 | return NULL; | |
14396 | return include_name; | |
14397 | } | |
14398 | ||
c91513d8 PP |
14399 | /* Ignore this record_line request. */ |
14400 | ||
14401 | static void | |
14402 | noop_record_line (struct subfile *subfile, int line, CORE_ADDR pc) | |
14403 | { | |
14404 | return; | |
14405 | } | |
14406 | ||
f3f5162e DE |
14407 | /* Subroutine of dwarf_decode_lines to simplify it. |
14408 | Process the line number information in LH. */ | |
debd256d | 14409 | |
c906108c | 14410 | static void |
f3f5162e DE |
14411 | dwarf_decode_lines_1 (struct line_header *lh, const char *comp_dir, |
14412 | struct dwarf2_cu *cu, struct partial_symtab *pst) | |
c906108c | 14413 | { |
a8c50c1f | 14414 | gdb_byte *line_ptr, *extended_end; |
fe1b8b76 | 14415 | gdb_byte *line_end; |
a8c50c1f | 14416 | unsigned int bytes_read, extended_len; |
c906108c | 14417 | unsigned char op_code, extended_op, adj_opcode; |
e142c38c DJ |
14418 | CORE_ADDR baseaddr; |
14419 | struct objfile *objfile = cu->objfile; | |
f3f5162e | 14420 | bfd *abfd = objfile->obfd; |
fbf65064 | 14421 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
aaa75496 | 14422 | const int decode_for_pst_p = (pst != NULL); |
f3f5162e | 14423 | struct subfile *last_subfile = NULL; |
c91513d8 PP |
14424 | void (*p_record_line) (struct subfile *subfile, int line, CORE_ADDR pc) |
14425 | = record_line; | |
e142c38c DJ |
14426 | |
14427 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 14428 | |
debd256d JB |
14429 | line_ptr = lh->statement_program_start; |
14430 | line_end = lh->statement_program_end; | |
c906108c SS |
14431 | |
14432 | /* Read the statement sequences until there's nothing left. */ | |
14433 | while (line_ptr < line_end) | |
14434 | { | |
14435 | /* state machine registers */ | |
14436 | CORE_ADDR address = 0; | |
14437 | unsigned int file = 1; | |
14438 | unsigned int line = 1; | |
14439 | unsigned int column = 0; | |
debd256d | 14440 | int is_stmt = lh->default_is_stmt; |
c906108c SS |
14441 | int basic_block = 0; |
14442 | int end_sequence = 0; | |
fbf65064 | 14443 | CORE_ADDR addr; |
2dc7f7b3 | 14444 | unsigned char op_index = 0; |
c906108c | 14445 | |
aaa75496 | 14446 | if (!decode_for_pst_p && lh->num_file_names >= file) |
c906108c | 14447 | { |
aaa75496 | 14448 | /* Start a subfile for the current file of the state machine. */ |
debd256d JB |
14449 | /* lh->include_dirs and lh->file_names are 0-based, but the |
14450 | directory and file name numbers in the statement program | |
14451 | are 1-based. */ | |
14452 | struct file_entry *fe = &lh->file_names[file - 1]; | |
4f1520fb | 14453 | char *dir = NULL; |
a738430d | 14454 | |
debd256d JB |
14455 | if (fe->dir_index) |
14456 | dir = lh->include_dirs[fe->dir_index - 1]; | |
4f1520fb FR |
14457 | |
14458 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
c906108c SS |
14459 | } |
14460 | ||
a738430d | 14461 | /* Decode the table. */ |
c5aa993b | 14462 | while (!end_sequence) |
c906108c SS |
14463 | { |
14464 | op_code = read_1_byte (abfd, line_ptr); | |
14465 | line_ptr += 1; | |
59205f5a JB |
14466 | if (line_ptr > line_end) |
14467 | { | |
14468 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
14469 | break; | |
14470 | } | |
9aa1fe7e | 14471 | |
debd256d | 14472 | if (op_code >= lh->opcode_base) |
6e70227d | 14473 | { |
a738430d | 14474 | /* Special operand. */ |
debd256d | 14475 | adj_opcode = op_code - lh->opcode_base; |
2dc7f7b3 TT |
14476 | address += (((op_index + (adj_opcode / lh->line_range)) |
14477 | / lh->maximum_ops_per_instruction) | |
14478 | * lh->minimum_instruction_length); | |
14479 | op_index = ((op_index + (adj_opcode / lh->line_range)) | |
14480 | % lh->maximum_ops_per_instruction); | |
debd256d | 14481 | line += lh->line_base + (adj_opcode % lh->line_range); |
59205f5a | 14482 | if (lh->num_file_names < file || file == 0) |
25e43795 | 14483 | dwarf2_debug_line_missing_file_complaint (); |
2dc7f7b3 TT |
14484 | /* For now we ignore lines not starting on an |
14485 | instruction boundary. */ | |
14486 | else if (op_index == 0) | |
25e43795 DJ |
14487 | { |
14488 | lh->file_names[file - 1].included_p = 1; | |
ca5f395d | 14489 | if (!decode_for_pst_p && is_stmt) |
fbf65064 UW |
14490 | { |
14491 | if (last_subfile != current_subfile) | |
14492 | { | |
14493 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
14494 | if (last_subfile) | |
c91513d8 | 14495 | (*p_record_line) (last_subfile, 0, addr); |
fbf65064 UW |
14496 | last_subfile = current_subfile; |
14497 | } | |
25e43795 | 14498 | /* Append row to matrix using current values. */ |
7019d805 | 14499 | addr = gdbarch_addr_bits_remove (gdbarch, address); |
c91513d8 | 14500 | (*p_record_line) (current_subfile, line, addr); |
366da635 | 14501 | } |
25e43795 | 14502 | } |
ca5f395d | 14503 | basic_block = 0; |
9aa1fe7e GK |
14504 | } |
14505 | else switch (op_code) | |
c906108c SS |
14506 | { |
14507 | case DW_LNS_extended_op: | |
3e43a32a MS |
14508 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
14509 | &bytes_read); | |
473b7be6 | 14510 | line_ptr += bytes_read; |
a8c50c1f | 14511 | extended_end = line_ptr + extended_len; |
c906108c SS |
14512 | extended_op = read_1_byte (abfd, line_ptr); |
14513 | line_ptr += 1; | |
14514 | switch (extended_op) | |
14515 | { | |
14516 | case DW_LNE_end_sequence: | |
c91513d8 | 14517 | p_record_line = record_line; |
c906108c | 14518 | end_sequence = 1; |
c906108c SS |
14519 | break; |
14520 | case DW_LNE_set_address: | |
e7c27a73 | 14521 | address = read_address (abfd, line_ptr, cu, &bytes_read); |
c91513d8 PP |
14522 | |
14523 | if (address == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
14524 | { | |
14525 | /* This line table is for a function which has been | |
14526 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
14527 | ||
14528 | long line_offset | |
36586728 | 14529 | = line_ptr - get_debug_line_section (cu)->buffer; |
c91513d8 PP |
14530 | |
14531 | complaint (&symfile_complaints, | |
14532 | _(".debug_line address at offset 0x%lx is 0 " | |
14533 | "[in module %s]"), | |
bb5ed363 | 14534 | line_offset, objfile->name); |
c91513d8 PP |
14535 | p_record_line = noop_record_line; |
14536 | } | |
14537 | ||
2dc7f7b3 | 14538 | op_index = 0; |
107d2387 AC |
14539 | line_ptr += bytes_read; |
14540 | address += baseaddr; | |
c906108c SS |
14541 | break; |
14542 | case DW_LNE_define_file: | |
debd256d JB |
14543 | { |
14544 | char *cur_file; | |
14545 | unsigned int dir_index, mod_time, length; | |
6e70227d | 14546 | |
3e43a32a MS |
14547 | cur_file = read_direct_string (abfd, line_ptr, |
14548 | &bytes_read); | |
debd256d JB |
14549 | line_ptr += bytes_read; |
14550 | dir_index = | |
14551 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
14552 | line_ptr += bytes_read; | |
14553 | mod_time = | |
14554 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
14555 | line_ptr += bytes_read; | |
14556 | length = | |
14557 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
14558 | line_ptr += bytes_read; | |
14559 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
14560 | } | |
c906108c | 14561 | break; |
d0c6ba3d CC |
14562 | case DW_LNE_set_discriminator: |
14563 | /* The discriminator is not interesting to the debugger; | |
14564 | just ignore it. */ | |
14565 | line_ptr = extended_end; | |
14566 | break; | |
c906108c | 14567 | default: |
4d3c2250 | 14568 | complaint (&symfile_complaints, |
e2e0b3e5 | 14569 | _("mangled .debug_line section")); |
debd256d | 14570 | return; |
c906108c | 14571 | } |
a8c50c1f DJ |
14572 | /* Make sure that we parsed the extended op correctly. If e.g. |
14573 | we expected a different address size than the producer used, | |
14574 | we may have read the wrong number of bytes. */ | |
14575 | if (line_ptr != extended_end) | |
14576 | { | |
14577 | complaint (&symfile_complaints, | |
14578 | _("mangled .debug_line section")); | |
14579 | return; | |
14580 | } | |
c906108c SS |
14581 | break; |
14582 | case DW_LNS_copy: | |
59205f5a | 14583 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
14584 | dwarf2_debug_line_missing_file_complaint (); |
14585 | else | |
366da635 | 14586 | { |
25e43795 | 14587 | lh->file_names[file - 1].included_p = 1; |
ca5f395d | 14588 | if (!decode_for_pst_p && is_stmt) |
fbf65064 UW |
14589 | { |
14590 | if (last_subfile != current_subfile) | |
14591 | { | |
14592 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
14593 | if (last_subfile) | |
c91513d8 | 14594 | (*p_record_line) (last_subfile, 0, addr); |
fbf65064 UW |
14595 | last_subfile = current_subfile; |
14596 | } | |
7019d805 | 14597 | addr = gdbarch_addr_bits_remove (gdbarch, address); |
c91513d8 | 14598 | (*p_record_line) (current_subfile, line, addr); |
fbf65064 | 14599 | } |
366da635 | 14600 | } |
c906108c SS |
14601 | basic_block = 0; |
14602 | break; | |
14603 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
14604 | { |
14605 | CORE_ADDR adjust | |
14606 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
14607 | ||
14608 | address += (((op_index + adjust) | |
14609 | / lh->maximum_ops_per_instruction) | |
14610 | * lh->minimum_instruction_length); | |
14611 | op_index = ((op_index + adjust) | |
14612 | % lh->maximum_ops_per_instruction); | |
14613 | line_ptr += bytes_read; | |
14614 | } | |
c906108c SS |
14615 | break; |
14616 | case DW_LNS_advance_line: | |
14617 | line += read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
14618 | line_ptr += bytes_read; | |
14619 | break; | |
14620 | case DW_LNS_set_file: | |
debd256d | 14621 | { |
a738430d MK |
14622 | /* The arrays lh->include_dirs and lh->file_names are |
14623 | 0-based, but the directory and file name numbers in | |
14624 | the statement program are 1-based. */ | |
debd256d | 14625 | struct file_entry *fe; |
4f1520fb | 14626 | char *dir = NULL; |
a738430d | 14627 | |
debd256d JB |
14628 | file = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
14629 | line_ptr += bytes_read; | |
59205f5a | 14630 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
14631 | dwarf2_debug_line_missing_file_complaint (); |
14632 | else | |
14633 | { | |
14634 | fe = &lh->file_names[file - 1]; | |
14635 | if (fe->dir_index) | |
14636 | dir = lh->include_dirs[fe->dir_index - 1]; | |
14637 | if (!decode_for_pst_p) | |
14638 | { | |
14639 | last_subfile = current_subfile; | |
14640 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
14641 | } | |
14642 | } | |
debd256d | 14643 | } |
c906108c SS |
14644 | break; |
14645 | case DW_LNS_set_column: | |
14646 | column = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
14647 | line_ptr += bytes_read; | |
14648 | break; | |
14649 | case DW_LNS_negate_stmt: | |
14650 | is_stmt = (!is_stmt); | |
14651 | break; | |
14652 | case DW_LNS_set_basic_block: | |
14653 | basic_block = 1; | |
14654 | break; | |
c2c6d25f JM |
14655 | /* Add to the address register of the state machine the |
14656 | address increment value corresponding to special opcode | |
a738430d MK |
14657 | 255. I.e., this value is scaled by the minimum |
14658 | instruction length since special opcode 255 would have | |
b021a221 | 14659 | scaled the increment. */ |
c906108c | 14660 | case DW_LNS_const_add_pc: |
2dc7f7b3 TT |
14661 | { |
14662 | CORE_ADDR adjust = (255 - lh->opcode_base) / lh->line_range; | |
14663 | ||
14664 | address += (((op_index + adjust) | |
14665 | / lh->maximum_ops_per_instruction) | |
14666 | * lh->minimum_instruction_length); | |
14667 | op_index = ((op_index + adjust) | |
14668 | % lh->maximum_ops_per_instruction); | |
14669 | } | |
c906108c SS |
14670 | break; |
14671 | case DW_LNS_fixed_advance_pc: | |
14672 | address += read_2_bytes (abfd, line_ptr); | |
2dc7f7b3 | 14673 | op_index = 0; |
c906108c SS |
14674 | line_ptr += 2; |
14675 | break; | |
9aa1fe7e | 14676 | default: |
a738430d MK |
14677 | { |
14678 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 14679 | int i; |
a738430d | 14680 | |
debd256d | 14681 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
14682 | { |
14683 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
14684 | line_ptr += bytes_read; | |
14685 | } | |
14686 | } | |
c906108c SS |
14687 | } |
14688 | } | |
59205f5a JB |
14689 | if (lh->num_file_names < file || file == 0) |
14690 | dwarf2_debug_line_missing_file_complaint (); | |
14691 | else | |
14692 | { | |
14693 | lh->file_names[file - 1].included_p = 1; | |
14694 | if (!decode_for_pst_p) | |
fbf65064 UW |
14695 | { |
14696 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
c91513d8 | 14697 | (*p_record_line) (current_subfile, 0, addr); |
fbf65064 | 14698 | } |
59205f5a | 14699 | } |
c906108c | 14700 | } |
f3f5162e DE |
14701 | } |
14702 | ||
14703 | /* Decode the Line Number Program (LNP) for the given line_header | |
14704 | structure and CU. The actual information extracted and the type | |
14705 | of structures created from the LNP depends on the value of PST. | |
14706 | ||
14707 | 1. If PST is NULL, then this procedure uses the data from the program | |
14708 | to create all necessary symbol tables, and their linetables. | |
14709 | ||
14710 | 2. If PST is not NULL, this procedure reads the program to determine | |
14711 | the list of files included by the unit represented by PST, and | |
14712 | builds all the associated partial symbol tables. | |
14713 | ||
14714 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
14715 | It is used for relative paths in the line table. | |
14716 | NOTE: When processing partial symtabs (pst != NULL), | |
14717 | comp_dir == pst->dirname. | |
14718 | ||
14719 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
14720 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
14721 | symtab we don't use it in the name of the psymtabs we create. | |
14722 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
14723 | A good testcase for this is mb-inline.exp. */ | |
14724 | ||
14725 | static void | |
14726 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
14727 | struct dwarf2_cu *cu, struct partial_symtab *pst, | |
14728 | int want_line_info) | |
14729 | { | |
14730 | struct objfile *objfile = cu->objfile; | |
14731 | const int decode_for_pst_p = (pst != NULL); | |
14732 | struct subfile *first_subfile = current_subfile; | |
14733 | ||
14734 | if (want_line_info) | |
14735 | dwarf_decode_lines_1 (lh, comp_dir, cu, pst); | |
aaa75496 JB |
14736 | |
14737 | if (decode_for_pst_p) | |
14738 | { | |
14739 | int file_index; | |
14740 | ||
14741 | /* Now that we're done scanning the Line Header Program, we can | |
14742 | create the psymtab of each included file. */ | |
14743 | for (file_index = 0; file_index < lh->num_file_names; file_index++) | |
14744 | if (lh->file_names[file_index].included_p == 1) | |
14745 | { | |
c6da4cef DE |
14746 | char *include_name = |
14747 | psymtab_include_file_name (lh, file_index, pst, comp_dir); | |
14748 | if (include_name != NULL) | |
aaa75496 JB |
14749 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
14750 | } | |
14751 | } | |
cb1df416 DJ |
14752 | else |
14753 | { | |
14754 | /* Make sure a symtab is created for every file, even files | |
14755 | which contain only variables (i.e. no code with associated | |
14756 | line numbers). */ | |
cb1df416 | 14757 | int i; |
cb1df416 DJ |
14758 | |
14759 | for (i = 0; i < lh->num_file_names; i++) | |
14760 | { | |
14761 | char *dir = NULL; | |
f3f5162e | 14762 | struct file_entry *fe; |
9a619af0 | 14763 | |
cb1df416 DJ |
14764 | fe = &lh->file_names[i]; |
14765 | if (fe->dir_index) | |
14766 | dir = lh->include_dirs[fe->dir_index - 1]; | |
14767 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
14768 | ||
14769 | /* Skip the main file; we don't need it, and it must be | |
14770 | allocated last, so that it will show up before the | |
14771 | non-primary symtabs in the objfile's symtab list. */ | |
14772 | if (current_subfile == first_subfile) | |
14773 | continue; | |
14774 | ||
14775 | if (current_subfile->symtab == NULL) | |
14776 | current_subfile->symtab = allocate_symtab (current_subfile->name, | |
bb5ed363 | 14777 | objfile); |
cb1df416 DJ |
14778 | fe->symtab = current_subfile->symtab; |
14779 | } | |
14780 | } | |
c906108c SS |
14781 | } |
14782 | ||
14783 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
14784 | DIRNAME the name of the source directory which contains FILENAME | |
4f1520fb FR |
14785 | or NULL if not known. COMP_DIR is the compilation directory for the |
14786 | linetable's compilation unit or NULL if not known. | |
c906108c SS |
14787 | This routine tries to keep line numbers from identical absolute and |
14788 | relative file names in a common subfile. | |
14789 | ||
14790 | Using the `list' example from the GDB testsuite, which resides in | |
14791 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
14792 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
14793 | ||
c5aa993b JM |
14794 | DW_AT_name: /srcdir/list0.c |
14795 | DW_AT_comp_dir: /compdir | |
357e46e7 | 14796 | files.files[0].name: list0.h |
c5aa993b | 14797 | files.files[0].dir: /srcdir |
357e46e7 | 14798 | files.files[1].name: list0.c |
c5aa993b | 14799 | files.files[1].dir: /srcdir |
c906108c SS |
14800 | |
14801 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
14802 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
14803 | start_subfile will ensure that this happens provided that we pass the | |
14804 | concatenation of files.files[1].dir and files.files[1].name as the | |
14805 | subfile's name. */ | |
c906108c SS |
14806 | |
14807 | static void | |
3e43a32a MS |
14808 | dwarf2_start_subfile (char *filename, const char *dirname, |
14809 | const char *comp_dir) | |
c906108c | 14810 | { |
4f1520fb FR |
14811 | char *fullname; |
14812 | ||
14813 | /* While reading the DIEs, we call start_symtab(DW_AT_name, DW_AT_comp_dir). | |
14814 | `start_symtab' will always pass the contents of DW_AT_comp_dir as | |
14815 | second argument to start_subfile. To be consistent, we do the | |
14816 | same here. In order not to lose the line information directory, | |
14817 | we concatenate it to the filename when it makes sense. | |
14818 | Note that the Dwarf3 standard says (speaking of filenames in line | |
14819 | information): ``The directory index is ignored for file names | |
14820 | that represent full path names''. Thus ignoring dirname in the | |
14821 | `else' branch below isn't an issue. */ | |
c906108c | 14822 | |
d5166ae1 | 14823 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
4f1520fb FR |
14824 | fullname = concat (dirname, SLASH_STRING, filename, (char *)NULL); |
14825 | else | |
14826 | fullname = filename; | |
c906108c | 14827 | |
4f1520fb FR |
14828 | start_subfile (fullname, comp_dir); |
14829 | ||
14830 | if (fullname != filename) | |
14831 | xfree (fullname); | |
c906108c SS |
14832 | } |
14833 | ||
f4dc4d17 DE |
14834 | /* Start a symtab for DWARF. |
14835 | NAME, COMP_DIR, LOW_PC are passed to start_symtab. */ | |
14836 | ||
14837 | static void | |
14838 | dwarf2_start_symtab (struct dwarf2_cu *cu, | |
14839 | char *name, char *comp_dir, CORE_ADDR low_pc) | |
14840 | { | |
14841 | start_symtab (name, comp_dir, low_pc); | |
14842 | record_debugformat ("DWARF 2"); | |
14843 | record_producer (cu->producer); | |
14844 | ||
14845 | /* We assume that we're processing GCC output. */ | |
14846 | processing_gcc_compilation = 2; | |
14847 | ||
14848 | processing_has_namespace_info = 0; | |
14849 | } | |
14850 | ||
4c2df51b DJ |
14851 | static void |
14852 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 14853 | struct dwarf2_cu *cu) |
4c2df51b | 14854 | { |
e7c27a73 DJ |
14855 | struct objfile *objfile = cu->objfile; |
14856 | struct comp_unit_head *cu_header = &cu->header; | |
14857 | ||
4c2df51b DJ |
14858 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
14859 | code here to turn a symbol with DW_AT_external and a | |
14860 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
14861 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
14862 | with some versions of binutils) where shared libraries could have | |
14863 | relocations against symbols in their debug information - the | |
14864 | minimal symbol would have the right address, but the debug info | |
14865 | would not. It's no longer necessary, because we will explicitly | |
14866 | apply relocations when we read in the debug information now. */ | |
14867 | ||
14868 | /* A DW_AT_location attribute with no contents indicates that a | |
14869 | variable has been optimized away. */ | |
14870 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
14871 | { | |
14872 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; | |
14873 | return; | |
14874 | } | |
14875 | ||
14876 | /* Handle one degenerate form of location expression specially, to | |
14877 | preserve GDB's previous behavior when section offsets are | |
3019eac3 DE |
14878 | specified. If this is just a DW_OP_addr or DW_OP_GNU_addr_index |
14879 | then mark this symbol as LOC_STATIC. */ | |
4c2df51b DJ |
14880 | |
14881 | if (attr_form_is_block (attr) | |
3019eac3 DE |
14882 | && ((DW_BLOCK (attr)->data[0] == DW_OP_addr |
14883 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size) | |
14884 | || (DW_BLOCK (attr)->data[0] == DW_OP_GNU_addr_index | |
14885 | && (DW_BLOCK (attr)->size | |
14886 | == 1 + leb128_size (&DW_BLOCK (attr)->data[1]))))) | |
4c2df51b | 14887 | { |
891d2f0b | 14888 | unsigned int dummy; |
4c2df51b | 14889 | |
3019eac3 DE |
14890 | if (DW_BLOCK (attr)->data[0] == DW_OP_addr) |
14891 | SYMBOL_VALUE_ADDRESS (sym) = | |
14892 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); | |
14893 | else | |
14894 | SYMBOL_VALUE_ADDRESS (sym) = | |
14895 | read_addr_index_from_leb128 (cu, DW_BLOCK (attr)->data + 1, &dummy); | |
907fc202 | 14896 | SYMBOL_CLASS (sym) = LOC_STATIC; |
4c2df51b DJ |
14897 | fixup_symbol_section (sym, objfile); |
14898 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
14899 | SYMBOL_SECTION (sym)); | |
4c2df51b DJ |
14900 | return; |
14901 | } | |
14902 | ||
14903 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
14904 | expression evaluator, and use LOC_COMPUTED only when necessary | |
14905 | (i.e. when the value of a register or memory location is | |
14906 | referenced, or a thread-local block, etc.). Then again, it might | |
14907 | not be worthwhile. I'm assuming that it isn't unless performance | |
14908 | or memory numbers show me otherwise. */ | |
14909 | ||
e7c27a73 | 14910 | dwarf2_symbol_mark_computed (attr, sym, cu); |
4c2df51b | 14911 | SYMBOL_CLASS (sym) = LOC_COMPUTED; |
8be455d7 JK |
14912 | |
14913 | if (SYMBOL_COMPUTED_OPS (sym) == &dwarf2_loclist_funcs) | |
14914 | cu->has_loclist = 1; | |
4c2df51b DJ |
14915 | } |
14916 | ||
c906108c SS |
14917 | /* Given a pointer to a DWARF information entry, figure out if we need |
14918 | to make a symbol table entry for it, and if so, create a new entry | |
14919 | and return a pointer to it. | |
14920 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
14921 | used the passed type. |
14922 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
14923 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
14924 | |
14925 | static struct symbol * | |
34eaf542 TT |
14926 | new_symbol_full (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
14927 | struct symbol *space) | |
c906108c | 14928 | { |
e7c27a73 | 14929 | struct objfile *objfile = cu->objfile; |
c906108c SS |
14930 | struct symbol *sym = NULL; |
14931 | char *name; | |
14932 | struct attribute *attr = NULL; | |
14933 | struct attribute *attr2 = NULL; | |
e142c38c | 14934 | CORE_ADDR baseaddr; |
e37fd15a SW |
14935 | struct pending **list_to_add = NULL; |
14936 | ||
edb3359d | 14937 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c DJ |
14938 | |
14939 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 14940 | |
94af9270 | 14941 | name = dwarf2_name (die, cu); |
c906108c SS |
14942 | if (name) |
14943 | { | |
94af9270 | 14944 | const char *linkagename; |
34eaf542 | 14945 | int suppress_add = 0; |
94af9270 | 14946 | |
34eaf542 TT |
14947 | if (space) |
14948 | sym = space; | |
14949 | else | |
14950 | sym = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symbol); | |
c906108c | 14951 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
14952 | |
14953 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
33e5013e | 14954 | SYMBOL_SET_LANGUAGE (sym, cu->language); |
94af9270 KS |
14955 | linkagename = dwarf2_physname (name, die, cu); |
14956 | SYMBOL_SET_NAMES (sym, linkagename, strlen (linkagename), 0, objfile); | |
c906108c | 14957 | |
f55ee35c JK |
14958 | /* Fortran does not have mangling standard and the mangling does differ |
14959 | between gfortran, iFort etc. */ | |
14960 | if (cu->language == language_fortran | |
b250c185 | 14961 | && symbol_get_demangled_name (&(sym->ginfo)) == NULL) |
29df156d SW |
14962 | symbol_set_demangled_name (&(sym->ginfo), |
14963 | (char *) dwarf2_full_name (name, die, cu), | |
14964 | NULL); | |
f55ee35c | 14965 | |
c906108c | 14966 | /* Default assumptions. |
c5aa993b | 14967 | Use the passed type or decode it from the die. */ |
176620f1 | 14968 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
875dc2fc | 14969 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
14970 | if (type != NULL) |
14971 | SYMBOL_TYPE (sym) = type; | |
14972 | else | |
e7c27a73 | 14973 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
14974 | attr = dwarf2_attr (die, |
14975 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
14976 | cu); | |
c906108c SS |
14977 | if (attr) |
14978 | { | |
14979 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
14980 | } | |
cb1df416 | 14981 | |
edb3359d DJ |
14982 | attr = dwarf2_attr (die, |
14983 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
14984 | cu); | |
cb1df416 DJ |
14985 | if (attr) |
14986 | { | |
14987 | int file_index = DW_UNSND (attr); | |
9a619af0 | 14988 | |
cb1df416 DJ |
14989 | if (cu->line_header == NULL |
14990 | || file_index > cu->line_header->num_file_names) | |
14991 | complaint (&symfile_complaints, | |
14992 | _("file index out of range")); | |
1c3d648d | 14993 | else if (file_index > 0) |
cb1df416 DJ |
14994 | { |
14995 | struct file_entry *fe; | |
9a619af0 | 14996 | |
cb1df416 DJ |
14997 | fe = &cu->line_header->file_names[file_index - 1]; |
14998 | SYMBOL_SYMTAB (sym) = fe->symtab; | |
14999 | } | |
15000 | } | |
15001 | ||
c906108c SS |
15002 | switch (die->tag) |
15003 | { | |
15004 | case DW_TAG_label: | |
e142c38c | 15005 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c SS |
15006 | if (attr) |
15007 | { | |
15008 | SYMBOL_VALUE_ADDRESS (sym) = DW_ADDR (attr) + baseaddr; | |
15009 | } | |
0f5238ed TT |
15010 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
15011 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
c906108c | 15012 | SYMBOL_CLASS (sym) = LOC_LABEL; |
0f5238ed | 15013 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
15014 | break; |
15015 | case DW_TAG_subprogram: | |
15016 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
15017 | finish_block. */ | |
15018 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
e142c38c | 15019 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d JB |
15020 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
15021 | || cu->language == language_ada) | |
c906108c | 15022 | { |
2cfa0c8d JB |
15023 | /* Subprograms marked external are stored as a global symbol. |
15024 | Ada subprograms, whether marked external or not, are always | |
15025 | stored as a global symbol, because we want to be able to | |
15026 | access them globally. For instance, we want to be able | |
15027 | to break on a nested subprogram without having to | |
15028 | specify the context. */ | |
e37fd15a | 15029 | list_to_add = &global_symbols; |
c906108c SS |
15030 | } |
15031 | else | |
15032 | { | |
e37fd15a | 15033 | list_to_add = cu->list_in_scope; |
c906108c SS |
15034 | } |
15035 | break; | |
edb3359d DJ |
15036 | case DW_TAG_inlined_subroutine: |
15037 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
15038 | finish_block. */ | |
15039 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
15040 | SYMBOL_INLINED (sym) = 1; | |
481860b3 | 15041 | list_to_add = cu->list_in_scope; |
edb3359d | 15042 | break; |
34eaf542 TT |
15043 | case DW_TAG_template_value_param: |
15044 | suppress_add = 1; | |
15045 | /* Fall through. */ | |
72929c62 | 15046 | case DW_TAG_constant: |
c906108c | 15047 | case DW_TAG_variable: |
254e6b9e | 15048 | case DW_TAG_member: |
0963b4bd MS |
15049 | /* Compilation with minimal debug info may result in |
15050 | variables with missing type entries. Change the | |
15051 | misleading `void' type to something sensible. */ | |
c906108c | 15052 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) |
64c50499 | 15053 | SYMBOL_TYPE (sym) |
46bf5051 | 15054 | = objfile_type (objfile)->nodebug_data_symbol; |
64c50499 | 15055 | |
e142c38c | 15056 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
15057 | /* In the case of DW_TAG_member, we should only be called for |
15058 | static const members. */ | |
15059 | if (die->tag == DW_TAG_member) | |
15060 | { | |
3863f96c DE |
15061 | /* dwarf2_add_field uses die_is_declaration, |
15062 | so we do the same. */ | |
254e6b9e DE |
15063 | gdb_assert (die_is_declaration (die, cu)); |
15064 | gdb_assert (attr); | |
15065 | } | |
c906108c SS |
15066 | if (attr) |
15067 | { | |
e7c27a73 | 15068 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 15069 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 15070 | if (!suppress_add) |
34eaf542 TT |
15071 | { |
15072 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
e37fd15a | 15073 | list_to_add = &global_symbols; |
34eaf542 | 15074 | else |
e37fd15a | 15075 | list_to_add = cu->list_in_scope; |
34eaf542 | 15076 | } |
c906108c SS |
15077 | break; |
15078 | } | |
e142c38c | 15079 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
15080 | if (attr) |
15081 | { | |
e7c27a73 | 15082 | var_decode_location (attr, sym, cu); |
e142c38c | 15083 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
15084 | |
15085 | /* Fortran explicitly imports any global symbols to the local | |
15086 | scope by DW_TAG_common_block. */ | |
15087 | if (cu->language == language_fortran && die->parent | |
15088 | && die->parent->tag == DW_TAG_common_block) | |
15089 | attr2 = NULL; | |
15090 | ||
caac4577 JG |
15091 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
15092 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
15093 | && !dwarf2_per_objfile->has_section_at_zero) | |
15094 | { | |
15095 | /* When a static variable is eliminated by the linker, | |
15096 | the corresponding debug information is not stripped | |
15097 | out, but the variable address is set to null; | |
15098 | do not add such variables into symbol table. */ | |
15099 | } | |
15100 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 15101 | { |
f55ee35c JK |
15102 | /* Workaround gfortran PR debug/40040 - it uses |
15103 | DW_AT_location for variables in -fPIC libraries which may | |
15104 | get overriden by other libraries/executable and get | |
15105 | a different address. Resolve it by the minimal symbol | |
15106 | which may come from inferior's executable using copy | |
15107 | relocation. Make this workaround only for gfortran as for | |
15108 | other compilers GDB cannot guess the minimal symbol | |
15109 | Fortran mangling kind. */ | |
15110 | if (cu->language == language_fortran && die->parent | |
15111 | && die->parent->tag == DW_TAG_module | |
15112 | && cu->producer | |
15113 | && strncmp (cu->producer, "GNU Fortran ", 12) == 0) | |
15114 | SYMBOL_CLASS (sym) = LOC_UNRESOLVED; | |
15115 | ||
1c809c68 TT |
15116 | /* A variable with DW_AT_external is never static, |
15117 | but it may be block-scoped. */ | |
15118 | list_to_add = (cu->list_in_scope == &file_symbols | |
15119 | ? &global_symbols : cu->list_in_scope); | |
1c809c68 | 15120 | } |
c906108c | 15121 | else |
e37fd15a | 15122 | list_to_add = cu->list_in_scope; |
c906108c SS |
15123 | } |
15124 | else | |
15125 | { | |
15126 | /* We do not know the address of this symbol. | |
c5aa993b JM |
15127 | If it is an external symbol and we have type information |
15128 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
15129 | The address of the variable will then be determined from | |
15130 | the minimal symbol table whenever the variable is | |
15131 | referenced. */ | |
e142c38c | 15132 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
15133 | |
15134 | /* Fortran explicitly imports any global symbols to the local | |
15135 | scope by DW_TAG_common_block. */ | |
15136 | if (cu->language == language_fortran && die->parent | |
15137 | && die->parent->tag == DW_TAG_common_block) | |
15138 | { | |
15139 | /* SYMBOL_CLASS doesn't matter here because | |
15140 | read_common_block is going to reset it. */ | |
15141 | if (!suppress_add) | |
15142 | list_to_add = cu->list_in_scope; | |
15143 | } | |
15144 | else if (attr2 && (DW_UNSND (attr2) != 0) | |
15145 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) | |
c906108c | 15146 | { |
0fe7935b DJ |
15147 | /* A variable with DW_AT_external is never static, but it |
15148 | may be block-scoped. */ | |
15149 | list_to_add = (cu->list_in_scope == &file_symbols | |
15150 | ? &global_symbols : cu->list_in_scope); | |
15151 | ||
c906108c | 15152 | SYMBOL_CLASS (sym) = LOC_UNRESOLVED; |
c906108c | 15153 | } |
442ddf59 JK |
15154 | else if (!die_is_declaration (die, cu)) |
15155 | { | |
15156 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
15157 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
15158 | if (!suppress_add) |
15159 | list_to_add = cu->list_in_scope; | |
442ddf59 | 15160 | } |
c906108c SS |
15161 | } |
15162 | break; | |
15163 | case DW_TAG_formal_parameter: | |
edb3359d DJ |
15164 | /* If we are inside a function, mark this as an argument. If |
15165 | not, we might be looking at an argument to an inlined function | |
15166 | when we do not have enough information to show inlined frames; | |
15167 | pretend it's a local variable in that case so that the user can | |
15168 | still see it. */ | |
15169 | if (context_stack_depth > 0 | |
15170 | && context_stack[context_stack_depth - 1].name != NULL) | |
15171 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
e142c38c | 15172 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
15173 | if (attr) |
15174 | { | |
e7c27a73 | 15175 | var_decode_location (attr, sym, cu); |
c906108c | 15176 | } |
e142c38c | 15177 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
15178 | if (attr) |
15179 | { | |
e7c27a73 | 15180 | dwarf2_const_value (attr, sym, cu); |
c906108c | 15181 | } |
f346a30d | 15182 | |
e37fd15a | 15183 | list_to_add = cu->list_in_scope; |
c906108c SS |
15184 | break; |
15185 | case DW_TAG_unspecified_parameters: | |
15186 | /* From varargs functions; gdb doesn't seem to have any | |
15187 | interest in this information, so just ignore it for now. | |
15188 | (FIXME?) */ | |
15189 | break; | |
34eaf542 TT |
15190 | case DW_TAG_template_type_param: |
15191 | suppress_add = 1; | |
15192 | /* Fall through. */ | |
c906108c | 15193 | case DW_TAG_class_type: |
680b30c7 | 15194 | case DW_TAG_interface_type: |
c906108c SS |
15195 | case DW_TAG_structure_type: |
15196 | case DW_TAG_union_type: | |
72019c9c | 15197 | case DW_TAG_set_type: |
c906108c SS |
15198 | case DW_TAG_enumeration_type: |
15199 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
176620f1 | 15200 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 15201 | |
63d06c5c | 15202 | { |
987504bb | 15203 | /* NOTE: carlton/2003-11-10: C++ and Java class symbols shouldn't |
63d06c5c DC |
15204 | really ever be static objects: otherwise, if you try |
15205 | to, say, break of a class's method and you're in a file | |
15206 | which doesn't mention that class, it won't work unless | |
15207 | the check for all static symbols in lookup_symbol_aux | |
15208 | saves you. See the OtherFileClass tests in | |
15209 | gdb.c++/namespace.exp. */ | |
15210 | ||
e37fd15a | 15211 | if (!suppress_add) |
34eaf542 | 15212 | { |
34eaf542 TT |
15213 | list_to_add = (cu->list_in_scope == &file_symbols |
15214 | && (cu->language == language_cplus | |
15215 | || cu->language == language_java) | |
15216 | ? &global_symbols : cu->list_in_scope); | |
63d06c5c | 15217 | |
64382290 TT |
15218 | /* The semantics of C++ state that "struct foo { |
15219 | ... }" also defines a typedef for "foo". A Java | |
15220 | class declaration also defines a typedef for the | |
15221 | class. */ | |
15222 | if (cu->language == language_cplus | |
15223 | || cu->language == language_java | |
15224 | || cu->language == language_ada) | |
15225 | { | |
15226 | /* The symbol's name is already allocated along | |
15227 | with this objfile, so we don't need to | |
15228 | duplicate it for the type. */ | |
15229 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
15230 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_SEARCH_NAME (sym); | |
15231 | } | |
63d06c5c DC |
15232 | } |
15233 | } | |
c906108c SS |
15234 | break; |
15235 | case DW_TAG_typedef: | |
63d06c5c DC |
15236 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
15237 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; | |
e37fd15a | 15238 | list_to_add = cu->list_in_scope; |
63d06c5c | 15239 | break; |
c906108c | 15240 | case DW_TAG_base_type: |
a02abb62 | 15241 | case DW_TAG_subrange_type: |
c906108c | 15242 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
176620f1 | 15243 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 15244 | list_to_add = cu->list_in_scope; |
c906108c SS |
15245 | break; |
15246 | case DW_TAG_enumerator: | |
e142c38c | 15247 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
15248 | if (attr) |
15249 | { | |
e7c27a73 | 15250 | dwarf2_const_value (attr, sym, cu); |
c906108c | 15251 | } |
63d06c5c DC |
15252 | { |
15253 | /* NOTE: carlton/2003-11-10: See comment above in the | |
15254 | DW_TAG_class_type, etc. block. */ | |
15255 | ||
e142c38c | 15256 | list_to_add = (cu->list_in_scope == &file_symbols |
987504bb JJ |
15257 | && (cu->language == language_cplus |
15258 | || cu->language == language_java) | |
e142c38c | 15259 | ? &global_symbols : cu->list_in_scope); |
63d06c5c | 15260 | } |
c906108c | 15261 | break; |
5c4e30ca DC |
15262 | case DW_TAG_namespace: |
15263 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
e37fd15a | 15264 | list_to_add = &global_symbols; |
5c4e30ca | 15265 | break; |
4357ac6c TT |
15266 | case DW_TAG_common_block: |
15267 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
15268 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; | |
15269 | add_symbol_to_list (sym, cu->list_in_scope); | |
15270 | break; | |
c906108c SS |
15271 | default: |
15272 | /* Not a tag we recognize. Hopefully we aren't processing | |
15273 | trash data, but since we must specifically ignore things | |
15274 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 15275 | this point. */ |
e2e0b3e5 | 15276 | complaint (&symfile_complaints, _("unsupported tag: '%s'"), |
4d3c2250 | 15277 | dwarf_tag_name (die->tag)); |
c906108c SS |
15278 | break; |
15279 | } | |
df8a16a1 | 15280 | |
e37fd15a SW |
15281 | if (suppress_add) |
15282 | { | |
15283 | sym->hash_next = objfile->template_symbols; | |
15284 | objfile->template_symbols = sym; | |
15285 | list_to_add = NULL; | |
15286 | } | |
15287 | ||
15288 | if (list_to_add != NULL) | |
15289 | add_symbol_to_list (sym, list_to_add); | |
15290 | ||
df8a16a1 DJ |
15291 | /* For the benefit of old versions of GCC, check for anonymous |
15292 | namespaces based on the demangled name. */ | |
15293 | if (!processing_has_namespace_info | |
94af9270 | 15294 | && cu->language == language_cplus) |
a10964d1 | 15295 | cp_scan_for_anonymous_namespaces (sym, objfile); |
c906108c SS |
15296 | } |
15297 | return (sym); | |
15298 | } | |
15299 | ||
34eaf542 TT |
15300 | /* A wrapper for new_symbol_full that always allocates a new symbol. */ |
15301 | ||
15302 | static struct symbol * | |
15303 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu) | |
15304 | { | |
15305 | return new_symbol_full (die, type, cu, NULL); | |
15306 | } | |
15307 | ||
98bfdba5 PA |
15308 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
15309 | zero-extend it as appropriate for the symbol's type. The DWARF | |
15310 | standard (v4) is not entirely clear about the meaning of using | |
15311 | DW_FORM_dataN for a constant with a signed type, where the type is | |
15312 | wider than the data. The conclusion of a discussion on the DWARF | |
15313 | list was that this is unspecified. We choose to always zero-extend | |
15314 | because that is the interpretation long in use by GCC. */ | |
c906108c | 15315 | |
98bfdba5 PA |
15316 | static gdb_byte * |
15317 | dwarf2_const_value_data (struct attribute *attr, struct type *type, | |
15318 | const char *name, struct obstack *obstack, | |
12df843f | 15319 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 15320 | { |
e7c27a73 | 15321 | struct objfile *objfile = cu->objfile; |
e17a4113 UW |
15322 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
15323 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
15324 | LONGEST l = DW_UNSND (attr); |
15325 | ||
15326 | if (bits < sizeof (*value) * 8) | |
15327 | { | |
15328 | l &= ((LONGEST) 1 << bits) - 1; | |
15329 | *value = l; | |
15330 | } | |
15331 | else if (bits == sizeof (*value) * 8) | |
15332 | *value = l; | |
15333 | else | |
15334 | { | |
15335 | gdb_byte *bytes = obstack_alloc (obstack, bits / 8); | |
15336 | store_unsigned_integer (bytes, bits / 8, byte_order, l); | |
15337 | return bytes; | |
15338 | } | |
15339 | ||
15340 | return NULL; | |
15341 | } | |
15342 | ||
15343 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
15344 | the value does not fit in *VALUE, set *BYTES - either already | |
15345 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
15346 | or, set *BATON, if we translated the constant to a location | |
15347 | expression. */ | |
15348 | ||
15349 | static void | |
15350 | dwarf2_const_value_attr (struct attribute *attr, struct type *type, | |
15351 | const char *name, struct obstack *obstack, | |
15352 | struct dwarf2_cu *cu, | |
12df843f | 15353 | LONGEST *value, gdb_byte **bytes, |
98bfdba5 PA |
15354 | struct dwarf2_locexpr_baton **baton) |
15355 | { | |
15356 | struct objfile *objfile = cu->objfile; | |
15357 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c | 15358 | struct dwarf_block *blk; |
98bfdba5 PA |
15359 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
15360 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
15361 | ||
15362 | *value = 0; | |
15363 | *bytes = NULL; | |
15364 | *baton = NULL; | |
c906108c SS |
15365 | |
15366 | switch (attr->form) | |
15367 | { | |
15368 | case DW_FORM_addr: | |
3019eac3 | 15369 | case DW_FORM_GNU_addr_index: |
ac56253d | 15370 | { |
ac56253d TT |
15371 | gdb_byte *data; |
15372 | ||
98bfdba5 PA |
15373 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
15374 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 15375 | cu_header->addr_size, |
98bfdba5 | 15376 | TYPE_LENGTH (type)); |
ac56253d TT |
15377 | /* Symbols of this form are reasonably rare, so we just |
15378 | piggyback on the existing location code rather than writing | |
15379 | a new implementation of symbol_computed_ops. */ | |
98bfdba5 PA |
15380 | *baton = obstack_alloc (&objfile->objfile_obstack, |
15381 | sizeof (struct dwarf2_locexpr_baton)); | |
15382 | (*baton)->per_cu = cu->per_cu; | |
15383 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 15384 | |
98bfdba5 PA |
15385 | (*baton)->size = 2 + cu_header->addr_size; |
15386 | data = obstack_alloc (&objfile->objfile_obstack, (*baton)->size); | |
15387 | (*baton)->data = data; | |
ac56253d TT |
15388 | |
15389 | data[0] = DW_OP_addr; | |
15390 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
15391 | byte_order, DW_ADDR (attr)); | |
15392 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 15393 | } |
c906108c | 15394 | break; |
4ac36638 | 15395 | case DW_FORM_string: |
93b5768b | 15396 | case DW_FORM_strp: |
3019eac3 | 15397 | case DW_FORM_GNU_str_index: |
36586728 | 15398 | case DW_FORM_GNU_strp_alt: |
98bfdba5 PA |
15399 | /* DW_STRING is already allocated on the objfile obstack, point |
15400 | directly to it. */ | |
15401 | *bytes = (gdb_byte *) DW_STRING (attr); | |
93b5768b | 15402 | break; |
c906108c SS |
15403 | case DW_FORM_block1: |
15404 | case DW_FORM_block2: | |
15405 | case DW_FORM_block4: | |
15406 | case DW_FORM_block: | |
2dc7f7b3 | 15407 | case DW_FORM_exprloc: |
c906108c | 15408 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
15409 | if (TYPE_LENGTH (type) != blk->size) |
15410 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
15411 | TYPE_LENGTH (type)); | |
15412 | *bytes = blk->data; | |
c906108c | 15413 | break; |
2df3850c JM |
15414 | |
15415 | /* The DW_AT_const_value attributes are supposed to carry the | |
15416 | symbol's value "represented as it would be on the target | |
15417 | architecture." By the time we get here, it's already been | |
15418 | converted to host endianness, so we just need to sign- or | |
15419 | zero-extend it as appropriate. */ | |
15420 | case DW_FORM_data1: | |
3e43a32a MS |
15421 | *bytes = dwarf2_const_value_data (attr, type, name, |
15422 | obstack, cu, value, 8); | |
2df3850c | 15423 | break; |
c906108c | 15424 | case DW_FORM_data2: |
3e43a32a MS |
15425 | *bytes = dwarf2_const_value_data (attr, type, name, |
15426 | obstack, cu, value, 16); | |
2df3850c | 15427 | break; |
c906108c | 15428 | case DW_FORM_data4: |
3e43a32a MS |
15429 | *bytes = dwarf2_const_value_data (attr, type, name, |
15430 | obstack, cu, value, 32); | |
2df3850c | 15431 | break; |
c906108c | 15432 | case DW_FORM_data8: |
3e43a32a MS |
15433 | *bytes = dwarf2_const_value_data (attr, type, name, |
15434 | obstack, cu, value, 64); | |
2df3850c JM |
15435 | break; |
15436 | ||
c906108c | 15437 | case DW_FORM_sdata: |
98bfdba5 | 15438 | *value = DW_SND (attr); |
2df3850c JM |
15439 | break; |
15440 | ||
c906108c | 15441 | case DW_FORM_udata: |
98bfdba5 | 15442 | *value = DW_UNSND (attr); |
c906108c | 15443 | break; |
2df3850c | 15444 | |
c906108c | 15445 | default: |
4d3c2250 | 15446 | complaint (&symfile_complaints, |
e2e0b3e5 | 15447 | _("unsupported const value attribute form: '%s'"), |
4d3c2250 | 15448 | dwarf_form_name (attr->form)); |
98bfdba5 | 15449 | *value = 0; |
c906108c SS |
15450 | break; |
15451 | } | |
15452 | } | |
15453 | ||
2df3850c | 15454 | |
98bfdba5 PA |
15455 | /* Copy constant value from an attribute to a symbol. */ |
15456 | ||
2df3850c | 15457 | static void |
98bfdba5 PA |
15458 | dwarf2_const_value (struct attribute *attr, struct symbol *sym, |
15459 | struct dwarf2_cu *cu) | |
2df3850c | 15460 | { |
98bfdba5 PA |
15461 | struct objfile *objfile = cu->objfile; |
15462 | struct comp_unit_head *cu_header = &cu->header; | |
12df843f | 15463 | LONGEST value; |
98bfdba5 PA |
15464 | gdb_byte *bytes; |
15465 | struct dwarf2_locexpr_baton *baton; | |
2df3850c | 15466 | |
98bfdba5 PA |
15467 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
15468 | SYMBOL_PRINT_NAME (sym), | |
15469 | &objfile->objfile_obstack, cu, | |
15470 | &value, &bytes, &baton); | |
2df3850c | 15471 | |
98bfdba5 PA |
15472 | if (baton != NULL) |
15473 | { | |
15474 | SYMBOL_COMPUTED_OPS (sym) = &dwarf2_locexpr_funcs; | |
15475 | SYMBOL_LOCATION_BATON (sym) = baton; | |
15476 | SYMBOL_CLASS (sym) = LOC_COMPUTED; | |
15477 | } | |
15478 | else if (bytes != NULL) | |
15479 | { | |
15480 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
15481 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; | |
15482 | } | |
15483 | else | |
15484 | { | |
15485 | SYMBOL_VALUE (sym) = value; | |
15486 | SYMBOL_CLASS (sym) = LOC_CONST; | |
15487 | } | |
2df3850c JM |
15488 | } |
15489 | ||
c906108c SS |
15490 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
15491 | ||
15492 | static struct type * | |
e7c27a73 | 15493 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 15494 | { |
c906108c | 15495 | struct attribute *type_attr; |
c906108c | 15496 | |
e142c38c | 15497 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
15498 | if (!type_attr) |
15499 | { | |
15500 | /* A missing DW_AT_type represents a void type. */ | |
46bf5051 | 15501 | return objfile_type (cu->objfile)->builtin_void; |
c906108c | 15502 | } |
348e048f | 15503 | |
673bfd45 | 15504 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
15505 | } |
15506 | ||
b4ba55a1 JB |
15507 | /* True iff CU's producer generates GNAT Ada auxiliary information |
15508 | that allows to find parallel types through that information instead | |
15509 | of having to do expensive parallel lookups by type name. */ | |
15510 | ||
15511 | static int | |
15512 | need_gnat_info (struct dwarf2_cu *cu) | |
15513 | { | |
15514 | /* FIXME: brobecker/2010-10-12: As of now, only the AdaCore version | |
15515 | of GNAT produces this auxiliary information, without any indication | |
15516 | that it is produced. Part of enhancing the FSF version of GNAT | |
15517 | to produce that information will be to put in place an indicator | |
15518 | that we can use in order to determine whether the descriptive type | |
15519 | info is available or not. One suggestion that has been made is | |
15520 | to use a new attribute, attached to the CU die. For now, assume | |
15521 | that the descriptive type info is not available. */ | |
15522 | return 0; | |
15523 | } | |
15524 | ||
b4ba55a1 JB |
15525 | /* Return the auxiliary type of the die in question using its |
15526 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
15527 | attribute is not present. */ | |
15528 | ||
15529 | static struct type * | |
15530 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
15531 | { | |
b4ba55a1 | 15532 | struct attribute *type_attr; |
b4ba55a1 JB |
15533 | |
15534 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
15535 | if (!type_attr) | |
15536 | return NULL; | |
15537 | ||
673bfd45 | 15538 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
15539 | } |
15540 | ||
15541 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
15542 | descriptive type accordingly. */ | |
15543 | ||
15544 | static void | |
15545 | set_descriptive_type (struct type *type, struct die_info *die, | |
15546 | struct dwarf2_cu *cu) | |
15547 | { | |
15548 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
15549 | ||
15550 | if (descriptive_type) | |
15551 | { | |
15552 | ALLOCATE_GNAT_AUX_TYPE (type); | |
15553 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
15554 | } | |
15555 | } | |
15556 | ||
c906108c SS |
15557 | /* Return the containing type of the die in question using its |
15558 | DW_AT_containing_type attribute. */ | |
15559 | ||
15560 | static struct type * | |
e7c27a73 | 15561 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 15562 | { |
c906108c | 15563 | struct attribute *type_attr; |
c906108c | 15564 | |
e142c38c | 15565 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
15566 | if (!type_attr) |
15567 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
15568 | "[in module %s]"), cu->objfile->name); | |
15569 | ||
673bfd45 | 15570 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
15571 | } |
15572 | ||
673bfd45 DE |
15573 | /* Look up the type of DIE in CU using its type attribute ATTR. |
15574 | If there is no type substitute an error marker. */ | |
15575 | ||
c906108c | 15576 | static struct type * |
673bfd45 DE |
15577 | lookup_die_type (struct die_info *die, struct attribute *attr, |
15578 | struct dwarf2_cu *cu) | |
c906108c | 15579 | { |
bb5ed363 | 15580 | struct objfile *objfile = cu->objfile; |
f792889a DJ |
15581 | struct type *this_type; |
15582 | ||
673bfd45 DE |
15583 | /* First see if we have it cached. */ |
15584 | ||
36586728 TT |
15585 | if (attr->form == DW_FORM_GNU_ref_alt) |
15586 | { | |
15587 | struct dwarf2_per_cu_data *per_cu; | |
15588 | sect_offset offset = dwarf2_get_ref_die_offset (attr); | |
15589 | ||
15590 | per_cu = dwarf2_find_containing_comp_unit (offset, 1, cu->objfile); | |
15591 | this_type = get_die_type_at_offset (offset, per_cu); | |
15592 | } | |
15593 | else if (is_ref_attr (attr)) | |
673bfd45 | 15594 | { |
b64f50a1 | 15595 | sect_offset offset = dwarf2_get_ref_die_offset (attr); |
673bfd45 DE |
15596 | |
15597 | this_type = get_die_type_at_offset (offset, cu->per_cu); | |
15598 | } | |
55f1336d | 15599 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 DE |
15600 | { |
15601 | struct signatured_type *sig_type = DW_SIGNATURED_TYPE (attr); | |
673bfd45 DE |
15602 | |
15603 | /* sig_type will be NULL if the signatured type is missing from | |
15604 | the debug info. */ | |
15605 | if (sig_type == NULL) | |
15606 | error (_("Dwarf Error: Cannot find signatured DIE referenced from DIE " | |
15607 | "at 0x%x [in module %s]"), | |
b64f50a1 | 15608 | die->offset.sect_off, objfile->name); |
673bfd45 | 15609 | |
3019eac3 DE |
15610 | gdb_assert (sig_type->per_cu.is_debug_types); |
15611 | /* If we haven't filled in type_offset_in_section yet, then we | |
15612 | haven't read the type in yet. */ | |
15613 | this_type = NULL; | |
15614 | if (sig_type->type_offset_in_section.sect_off != 0) | |
15615 | { | |
15616 | this_type = | |
15617 | get_die_type_at_offset (sig_type->type_offset_in_section, | |
15618 | &sig_type->per_cu); | |
15619 | } | |
673bfd45 DE |
15620 | } |
15621 | else | |
15622 | { | |
15623 | dump_die_for_error (die); | |
15624 | error (_("Dwarf Error: Bad type attribute %s [in module %s]"), | |
bb5ed363 | 15625 | dwarf_attr_name (attr->name), objfile->name); |
673bfd45 DE |
15626 | } |
15627 | ||
15628 | /* If not cached we need to read it in. */ | |
15629 | ||
15630 | if (this_type == NULL) | |
15631 | { | |
15632 | struct die_info *type_die; | |
15633 | struct dwarf2_cu *type_cu = cu; | |
15634 | ||
15635 | type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
3019eac3 DE |
15636 | /* If we found the type now, it's probably because the type came |
15637 | from an inter-CU reference and the type's CU got expanded before | |
15638 | ours. */ | |
15639 | this_type = get_die_type (type_die, type_cu); | |
15640 | if (this_type == NULL) | |
15641 | this_type = read_type_die_1 (type_die, type_cu); | |
673bfd45 DE |
15642 | } |
15643 | ||
15644 | /* If we still don't have a type use an error marker. */ | |
15645 | ||
15646 | if (this_type == NULL) | |
c906108c | 15647 | { |
b00fdb78 TT |
15648 | char *message, *saved; |
15649 | ||
15650 | /* read_type_die already issued a complaint. */ | |
15651 | message = xstrprintf (_("<unknown type in %s, CU 0x%x, DIE 0x%x>"), | |
bb5ed363 | 15652 | objfile->name, |
b64f50a1 JK |
15653 | cu->header.offset.sect_off, |
15654 | die->offset.sect_off); | |
bb5ed363 | 15655 | saved = obstack_copy0 (&objfile->objfile_obstack, |
b00fdb78 TT |
15656 | message, strlen (message)); |
15657 | xfree (message); | |
15658 | ||
bb5ed363 | 15659 | this_type = init_type (TYPE_CODE_ERROR, 0, 0, saved, objfile); |
c906108c | 15660 | } |
673bfd45 | 15661 | |
f792889a | 15662 | return this_type; |
c906108c SS |
15663 | } |
15664 | ||
673bfd45 DE |
15665 | /* Return the type in DIE, CU. |
15666 | Returns NULL for invalid types. | |
15667 | ||
15668 | This first does a lookup in the appropriate type_hash table, | |
15669 | and only reads the die in if necessary. | |
15670 | ||
15671 | NOTE: This can be called when reading in partial or full symbols. */ | |
15672 | ||
f792889a | 15673 | static struct type * |
e7c27a73 | 15674 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 15675 | { |
f792889a DJ |
15676 | struct type *this_type; |
15677 | ||
15678 | this_type = get_die_type (die, cu); | |
15679 | if (this_type) | |
15680 | return this_type; | |
15681 | ||
673bfd45 DE |
15682 | return read_type_die_1 (die, cu); |
15683 | } | |
15684 | ||
15685 | /* Read the type in DIE, CU. | |
15686 | Returns NULL for invalid types. */ | |
15687 | ||
15688 | static struct type * | |
15689 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
15690 | { | |
15691 | struct type *this_type = NULL; | |
15692 | ||
c906108c SS |
15693 | switch (die->tag) |
15694 | { | |
15695 | case DW_TAG_class_type: | |
680b30c7 | 15696 | case DW_TAG_interface_type: |
c906108c SS |
15697 | case DW_TAG_structure_type: |
15698 | case DW_TAG_union_type: | |
f792889a | 15699 | this_type = read_structure_type (die, cu); |
c906108c SS |
15700 | break; |
15701 | case DW_TAG_enumeration_type: | |
f792889a | 15702 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
15703 | break; |
15704 | case DW_TAG_subprogram: | |
15705 | case DW_TAG_subroutine_type: | |
edb3359d | 15706 | case DW_TAG_inlined_subroutine: |
f792889a | 15707 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
15708 | break; |
15709 | case DW_TAG_array_type: | |
f792889a | 15710 | this_type = read_array_type (die, cu); |
c906108c | 15711 | break; |
72019c9c | 15712 | case DW_TAG_set_type: |
f792889a | 15713 | this_type = read_set_type (die, cu); |
72019c9c | 15714 | break; |
c906108c | 15715 | case DW_TAG_pointer_type: |
f792889a | 15716 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
15717 | break; |
15718 | case DW_TAG_ptr_to_member_type: | |
f792889a | 15719 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
15720 | break; |
15721 | case DW_TAG_reference_type: | |
f792889a | 15722 | this_type = read_tag_reference_type (die, cu); |
c906108c SS |
15723 | break; |
15724 | case DW_TAG_const_type: | |
f792889a | 15725 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
15726 | break; |
15727 | case DW_TAG_volatile_type: | |
f792889a | 15728 | this_type = read_tag_volatile_type (die, cu); |
c906108c SS |
15729 | break; |
15730 | case DW_TAG_string_type: | |
f792889a | 15731 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
15732 | break; |
15733 | case DW_TAG_typedef: | |
f792889a | 15734 | this_type = read_typedef (die, cu); |
c906108c | 15735 | break; |
a02abb62 | 15736 | case DW_TAG_subrange_type: |
f792889a | 15737 | this_type = read_subrange_type (die, cu); |
a02abb62 | 15738 | break; |
c906108c | 15739 | case DW_TAG_base_type: |
f792889a | 15740 | this_type = read_base_type (die, cu); |
c906108c | 15741 | break; |
81a17f79 | 15742 | case DW_TAG_unspecified_type: |
f792889a | 15743 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 15744 | break; |
0114d602 DJ |
15745 | case DW_TAG_namespace: |
15746 | this_type = read_namespace_type (die, cu); | |
15747 | break; | |
f55ee35c JK |
15748 | case DW_TAG_module: |
15749 | this_type = read_module_type (die, cu); | |
15750 | break; | |
c906108c | 15751 | default: |
3e43a32a MS |
15752 | complaint (&symfile_complaints, |
15753 | _("unexpected tag in read_type_die: '%s'"), | |
4d3c2250 | 15754 | dwarf_tag_name (die->tag)); |
c906108c SS |
15755 | break; |
15756 | } | |
63d06c5c | 15757 | |
f792889a | 15758 | return this_type; |
63d06c5c DC |
15759 | } |
15760 | ||
abc72ce4 DE |
15761 | /* See if we can figure out if the class lives in a namespace. We do |
15762 | this by looking for a member function; its demangled name will | |
15763 | contain namespace info, if there is any. | |
15764 | Return the computed name or NULL. | |
15765 | Space for the result is allocated on the objfile's obstack. | |
15766 | This is the full-die version of guess_partial_die_structure_name. | |
15767 | In this case we know DIE has no useful parent. */ | |
15768 | ||
15769 | static char * | |
15770 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) | |
15771 | { | |
15772 | struct die_info *spec_die; | |
15773 | struct dwarf2_cu *spec_cu; | |
15774 | struct die_info *child; | |
15775 | ||
15776 | spec_cu = cu; | |
15777 | spec_die = die_specification (die, &spec_cu); | |
15778 | if (spec_die != NULL) | |
15779 | { | |
15780 | die = spec_die; | |
15781 | cu = spec_cu; | |
15782 | } | |
15783 | ||
15784 | for (child = die->child; | |
15785 | child != NULL; | |
15786 | child = child->sibling) | |
15787 | { | |
15788 | if (child->tag == DW_TAG_subprogram) | |
15789 | { | |
15790 | struct attribute *attr; | |
15791 | ||
15792 | attr = dwarf2_attr (child, DW_AT_linkage_name, cu); | |
15793 | if (attr == NULL) | |
15794 | attr = dwarf2_attr (child, DW_AT_MIPS_linkage_name, cu); | |
15795 | if (attr != NULL) | |
15796 | { | |
15797 | char *actual_name | |
15798 | = language_class_name_from_physname (cu->language_defn, | |
15799 | DW_STRING (attr)); | |
15800 | char *name = NULL; | |
15801 | ||
15802 | if (actual_name != NULL) | |
15803 | { | |
15804 | char *die_name = dwarf2_name (die, cu); | |
15805 | ||
15806 | if (die_name != NULL | |
15807 | && strcmp (die_name, actual_name) != 0) | |
15808 | { | |
15809 | /* Strip off the class name from the full name. | |
15810 | We want the prefix. */ | |
15811 | int die_name_len = strlen (die_name); | |
15812 | int actual_name_len = strlen (actual_name); | |
15813 | ||
15814 | /* Test for '::' as a sanity check. */ | |
15815 | if (actual_name_len > die_name_len + 2 | |
3e43a32a MS |
15816 | && actual_name[actual_name_len |
15817 | - die_name_len - 1] == ':') | |
abc72ce4 DE |
15818 | name = |
15819 | obsavestring (actual_name, | |
15820 | actual_name_len - die_name_len - 2, | |
15821 | &cu->objfile->objfile_obstack); | |
15822 | } | |
15823 | } | |
15824 | xfree (actual_name); | |
15825 | return name; | |
15826 | } | |
15827 | } | |
15828 | } | |
15829 | ||
15830 | return NULL; | |
15831 | } | |
15832 | ||
96408a79 SA |
15833 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
15834 | prefix part in such case. See | |
15835 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
15836 | ||
15837 | static char * | |
15838 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) | |
15839 | { | |
15840 | struct attribute *attr; | |
15841 | char *base; | |
15842 | ||
15843 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
15844 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
15845 | return NULL; | |
15846 | ||
15847 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
15848 | if (attr != NULL && DW_STRING (attr) != NULL) | |
15849 | return NULL; | |
15850 | ||
15851 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
15852 | if (attr == NULL) | |
15853 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
15854 | if (attr == NULL || DW_STRING (attr) == NULL) | |
15855 | return NULL; | |
15856 | ||
15857 | /* dwarf2_name had to be already called. */ | |
15858 | gdb_assert (DW_STRING_IS_CANONICAL (attr)); | |
15859 | ||
15860 | /* Strip the base name, keep any leading namespaces/classes. */ | |
15861 | base = strrchr (DW_STRING (attr), ':'); | |
15862 | if (base == NULL || base == DW_STRING (attr) || base[-1] != ':') | |
15863 | return ""; | |
15864 | ||
15865 | return obsavestring (DW_STRING (attr), &base[-1] - DW_STRING (attr), | |
15866 | &cu->objfile->objfile_obstack); | |
15867 | } | |
15868 | ||
fdde2d81 | 15869 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 15870 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 15871 | |
0114d602 DJ |
15872 | For example, if we're within the method foo() in the following |
15873 | code: | |
15874 | ||
15875 | namespace N { | |
15876 | class C { | |
15877 | void foo () { | |
15878 | } | |
15879 | }; | |
15880 | } | |
15881 | ||
15882 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 15883 | |
0d5cff50 | 15884 | static const char * |
e142c38c | 15885 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 15886 | { |
0114d602 DJ |
15887 | struct die_info *parent, *spec_die; |
15888 | struct dwarf2_cu *spec_cu; | |
15889 | struct type *parent_type; | |
96408a79 | 15890 | char *retval; |
63d06c5c | 15891 | |
f55ee35c JK |
15892 | if (cu->language != language_cplus && cu->language != language_java |
15893 | && cu->language != language_fortran) | |
0114d602 DJ |
15894 | return ""; |
15895 | ||
96408a79 SA |
15896 | retval = anonymous_struct_prefix (die, cu); |
15897 | if (retval) | |
15898 | return retval; | |
15899 | ||
0114d602 DJ |
15900 | /* We have to be careful in the presence of DW_AT_specification. |
15901 | For example, with GCC 3.4, given the code | |
15902 | ||
15903 | namespace N { | |
15904 | void foo() { | |
15905 | // Definition of N::foo. | |
15906 | } | |
15907 | } | |
15908 | ||
15909 | then we'll have a tree of DIEs like this: | |
15910 | ||
15911 | 1: DW_TAG_compile_unit | |
15912 | 2: DW_TAG_namespace // N | |
15913 | 3: DW_TAG_subprogram // declaration of N::foo | |
15914 | 4: DW_TAG_subprogram // definition of N::foo | |
15915 | DW_AT_specification // refers to die #3 | |
15916 | ||
15917 | Thus, when processing die #4, we have to pretend that we're in | |
15918 | the context of its DW_AT_specification, namely the contex of die | |
15919 | #3. */ | |
15920 | spec_cu = cu; | |
15921 | spec_die = die_specification (die, &spec_cu); | |
15922 | if (spec_die == NULL) | |
15923 | parent = die->parent; | |
15924 | else | |
63d06c5c | 15925 | { |
0114d602 DJ |
15926 | parent = spec_die->parent; |
15927 | cu = spec_cu; | |
63d06c5c | 15928 | } |
0114d602 DJ |
15929 | |
15930 | if (parent == NULL) | |
15931 | return ""; | |
98bfdba5 PA |
15932 | else if (parent->building_fullname) |
15933 | { | |
15934 | const char *name; | |
15935 | const char *parent_name; | |
15936 | ||
15937 | /* It has been seen on RealView 2.2 built binaries, | |
15938 | DW_TAG_template_type_param types actually _defined_ as | |
15939 | children of the parent class: | |
15940 | ||
15941 | enum E {}; | |
15942 | template class <class Enum> Class{}; | |
15943 | Class<enum E> class_e; | |
15944 | ||
15945 | 1: DW_TAG_class_type (Class) | |
15946 | 2: DW_TAG_enumeration_type (E) | |
15947 | 3: DW_TAG_enumerator (enum1:0) | |
15948 | 3: DW_TAG_enumerator (enum2:1) | |
15949 | ... | |
15950 | 2: DW_TAG_template_type_param | |
15951 | DW_AT_type DW_FORM_ref_udata (E) | |
15952 | ||
15953 | Besides being broken debug info, it can put GDB into an | |
15954 | infinite loop. Consider: | |
15955 | ||
15956 | When we're building the full name for Class<E>, we'll start | |
15957 | at Class, and go look over its template type parameters, | |
15958 | finding E. We'll then try to build the full name of E, and | |
15959 | reach here. We're now trying to build the full name of E, | |
15960 | and look over the parent DIE for containing scope. In the | |
15961 | broken case, if we followed the parent DIE of E, we'd again | |
15962 | find Class, and once again go look at its template type | |
15963 | arguments, etc., etc. Simply don't consider such parent die | |
15964 | as source-level parent of this die (it can't be, the language | |
15965 | doesn't allow it), and break the loop here. */ | |
15966 | name = dwarf2_name (die, cu); | |
15967 | parent_name = dwarf2_name (parent, cu); | |
15968 | complaint (&symfile_complaints, | |
15969 | _("template param type '%s' defined within parent '%s'"), | |
15970 | name ? name : "<unknown>", | |
15971 | parent_name ? parent_name : "<unknown>"); | |
15972 | return ""; | |
15973 | } | |
63d06c5c | 15974 | else |
0114d602 DJ |
15975 | switch (parent->tag) |
15976 | { | |
63d06c5c | 15977 | case DW_TAG_namespace: |
0114d602 | 15978 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
15979 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
15980 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
15981 | Work around this problem here. */ | |
15982 | if (cu->language == language_cplus | |
15983 | && strcmp (TYPE_TAG_NAME (parent_type), "::") == 0) | |
15984 | return ""; | |
0114d602 DJ |
15985 | /* We give a name to even anonymous namespaces. */ |
15986 | return TYPE_TAG_NAME (parent_type); | |
63d06c5c | 15987 | case DW_TAG_class_type: |
680b30c7 | 15988 | case DW_TAG_interface_type: |
63d06c5c | 15989 | case DW_TAG_structure_type: |
0114d602 | 15990 | case DW_TAG_union_type: |
f55ee35c | 15991 | case DW_TAG_module: |
0114d602 DJ |
15992 | parent_type = read_type_die (parent, cu); |
15993 | if (TYPE_TAG_NAME (parent_type) != NULL) | |
15994 | return TYPE_TAG_NAME (parent_type); | |
15995 | else | |
15996 | /* An anonymous structure is only allowed non-static data | |
15997 | members; no typedefs, no member functions, et cetera. | |
15998 | So it does not need a prefix. */ | |
15999 | return ""; | |
abc72ce4 | 16000 | case DW_TAG_compile_unit: |
95554aad | 16001 | case DW_TAG_partial_unit: |
abc72ce4 DE |
16002 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
16003 | if (cu->language == language_cplus | |
8b70b953 | 16004 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
16005 | && die->child != NULL |
16006 | && (die->tag == DW_TAG_class_type | |
16007 | || die->tag == DW_TAG_structure_type | |
16008 | || die->tag == DW_TAG_union_type)) | |
16009 | { | |
16010 | char *name = guess_full_die_structure_name (die, cu); | |
16011 | if (name != NULL) | |
16012 | return name; | |
16013 | } | |
16014 | return ""; | |
63d06c5c | 16015 | default: |
8176b9b8 | 16016 | return determine_prefix (parent, cu); |
63d06c5c | 16017 | } |
63d06c5c DC |
16018 | } |
16019 | ||
3e43a32a MS |
16020 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
16021 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
16022 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
16023 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
16024 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 16025 | |
f55ee35c | 16026 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
16027 | |
16028 | static char * | |
f55ee35c JK |
16029 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
16030 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 16031 | { |
f55ee35c | 16032 | const char *lead = ""; |
5c315b68 | 16033 | const char *sep; |
63d06c5c | 16034 | |
3e43a32a MS |
16035 | if (suffix == NULL || suffix[0] == '\0' |
16036 | || prefix == NULL || prefix[0] == '\0') | |
987504bb JJ |
16037 | sep = ""; |
16038 | else if (cu->language == language_java) | |
16039 | sep = "."; | |
f55ee35c JK |
16040 | else if (cu->language == language_fortran && physname) |
16041 | { | |
16042 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
16043 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
16044 | ||
16045 | lead = "__"; | |
16046 | sep = "_MOD_"; | |
16047 | } | |
987504bb JJ |
16048 | else |
16049 | sep = "::"; | |
63d06c5c | 16050 | |
6dd47d34 DE |
16051 | if (prefix == NULL) |
16052 | prefix = ""; | |
16053 | if (suffix == NULL) | |
16054 | suffix = ""; | |
16055 | ||
987504bb JJ |
16056 | if (obs == NULL) |
16057 | { | |
3e43a32a MS |
16058 | char *retval |
16059 | = xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1); | |
9a619af0 | 16060 | |
f55ee35c JK |
16061 | strcpy (retval, lead); |
16062 | strcat (retval, prefix); | |
6dd47d34 DE |
16063 | strcat (retval, sep); |
16064 | strcat (retval, suffix); | |
63d06c5c DC |
16065 | return retval; |
16066 | } | |
987504bb JJ |
16067 | else |
16068 | { | |
16069 | /* We have an obstack. */ | |
f55ee35c | 16070 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 16071 | } |
63d06c5c DC |
16072 | } |
16073 | ||
c906108c SS |
16074 | /* Return sibling of die, NULL if no sibling. */ |
16075 | ||
f9aca02d | 16076 | static struct die_info * |
fba45db2 | 16077 | sibling_die (struct die_info *die) |
c906108c | 16078 | { |
639d11d3 | 16079 | return die->sibling; |
c906108c SS |
16080 | } |
16081 | ||
71c25dea TT |
16082 | /* Get name of a die, return NULL if not found. */ |
16083 | ||
16084 | static char * | |
16085 | dwarf2_canonicalize_name (char *name, struct dwarf2_cu *cu, | |
16086 | struct obstack *obstack) | |
16087 | { | |
16088 | if (name && cu->language == language_cplus) | |
16089 | { | |
16090 | char *canon_name = cp_canonicalize_string (name); | |
16091 | ||
16092 | if (canon_name != NULL) | |
16093 | { | |
16094 | if (strcmp (canon_name, name) != 0) | |
16095 | name = obsavestring (canon_name, strlen (canon_name), | |
16096 | obstack); | |
16097 | xfree (canon_name); | |
16098 | } | |
16099 | } | |
16100 | ||
16101 | return name; | |
c906108c SS |
16102 | } |
16103 | ||
9219021c DC |
16104 | /* Get name of a die, return NULL if not found. */ |
16105 | ||
16106 | static char * | |
e142c38c | 16107 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
16108 | { |
16109 | struct attribute *attr; | |
16110 | ||
e142c38c | 16111 | attr = dwarf2_attr (die, DW_AT_name, cu); |
53832f31 TT |
16112 | if ((!attr || !DW_STRING (attr)) |
16113 | && die->tag != DW_TAG_class_type | |
16114 | && die->tag != DW_TAG_interface_type | |
16115 | && die->tag != DW_TAG_structure_type | |
16116 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
16117 | return NULL; |
16118 | ||
16119 | switch (die->tag) | |
16120 | { | |
16121 | case DW_TAG_compile_unit: | |
95554aad | 16122 | case DW_TAG_partial_unit: |
71c25dea TT |
16123 | /* Compilation units have a DW_AT_name that is a filename, not |
16124 | a source language identifier. */ | |
16125 | case DW_TAG_enumeration_type: | |
16126 | case DW_TAG_enumerator: | |
16127 | /* These tags always have simple identifiers already; no need | |
16128 | to canonicalize them. */ | |
16129 | return DW_STRING (attr); | |
907af001 | 16130 | |
418835cc KS |
16131 | case DW_TAG_subprogram: |
16132 | /* Java constructors will all be named "<init>", so return | |
16133 | the class name when we see this special case. */ | |
16134 | if (cu->language == language_java | |
16135 | && DW_STRING (attr) != NULL | |
16136 | && strcmp (DW_STRING (attr), "<init>") == 0) | |
16137 | { | |
16138 | struct dwarf2_cu *spec_cu = cu; | |
16139 | struct die_info *spec_die; | |
16140 | ||
16141 | /* GCJ will output '<init>' for Java constructor names. | |
16142 | For this special case, return the name of the parent class. */ | |
16143 | ||
16144 | /* GCJ may output suprogram DIEs with AT_specification set. | |
16145 | If so, use the name of the specified DIE. */ | |
16146 | spec_die = die_specification (die, &spec_cu); | |
16147 | if (spec_die != NULL) | |
16148 | return dwarf2_name (spec_die, spec_cu); | |
16149 | ||
16150 | do | |
16151 | { | |
16152 | die = die->parent; | |
16153 | if (die->tag == DW_TAG_class_type) | |
16154 | return dwarf2_name (die, cu); | |
16155 | } | |
95554aad TT |
16156 | while (die->tag != DW_TAG_compile_unit |
16157 | && die->tag != DW_TAG_partial_unit); | |
418835cc | 16158 | } |
907af001 UW |
16159 | break; |
16160 | ||
16161 | case DW_TAG_class_type: | |
16162 | case DW_TAG_interface_type: | |
16163 | case DW_TAG_structure_type: | |
16164 | case DW_TAG_union_type: | |
16165 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
16166 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
16167 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
16168 | and GCC 4.4. We work around this problem by ignoring these. */ | |
53832f31 TT |
16169 | if (attr && DW_STRING (attr) |
16170 | && (strncmp (DW_STRING (attr), "._", 2) == 0 | |
16171 | || strncmp (DW_STRING (attr), "<anonymous", 10) == 0)) | |
907af001 | 16172 | return NULL; |
53832f31 TT |
16173 | |
16174 | /* GCC might emit a nameless typedef that has a linkage name. See | |
16175 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
16176 | if (!attr || DW_STRING (attr) == NULL) | |
16177 | { | |
df5c6c50 | 16178 | char *demangled = NULL; |
53832f31 TT |
16179 | |
16180 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
16181 | if (attr == NULL) | |
16182 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
16183 | ||
16184 | if (attr == NULL || DW_STRING (attr) == NULL) | |
16185 | return NULL; | |
16186 | ||
df5c6c50 JK |
16187 | /* Avoid demangling DW_STRING (attr) the second time on a second |
16188 | call for the same DIE. */ | |
16189 | if (!DW_STRING_IS_CANONICAL (attr)) | |
16190 | demangled = cplus_demangle (DW_STRING (attr), DMGL_TYPES); | |
53832f31 TT |
16191 | |
16192 | if (demangled) | |
16193 | { | |
96408a79 SA |
16194 | char *base; |
16195 | ||
53832f31 | 16196 | /* FIXME: we already did this for the partial symbol... */ |
96408a79 SA |
16197 | DW_STRING (attr) = obsavestring (demangled, strlen (demangled), |
16198 | &cu->objfile->objfile_obstack); | |
53832f31 TT |
16199 | DW_STRING_IS_CANONICAL (attr) = 1; |
16200 | xfree (demangled); | |
96408a79 SA |
16201 | |
16202 | /* Strip any leading namespaces/classes, keep only the base name. | |
16203 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
16204 | base = strrchr (DW_STRING (attr), ':'); | |
16205 | if (base && base > DW_STRING (attr) && base[-1] == ':') | |
16206 | return &base[1]; | |
16207 | else | |
16208 | return DW_STRING (attr); | |
53832f31 TT |
16209 | } |
16210 | } | |
907af001 UW |
16211 | break; |
16212 | ||
71c25dea | 16213 | default: |
907af001 UW |
16214 | break; |
16215 | } | |
16216 | ||
16217 | if (!DW_STRING_IS_CANONICAL (attr)) | |
16218 | { | |
16219 | DW_STRING (attr) | |
16220 | = dwarf2_canonicalize_name (DW_STRING (attr), cu, | |
16221 | &cu->objfile->objfile_obstack); | |
16222 | DW_STRING_IS_CANONICAL (attr) = 1; | |
71c25dea | 16223 | } |
907af001 | 16224 | return DW_STRING (attr); |
9219021c DC |
16225 | } |
16226 | ||
16227 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
16228 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
16229 | containing the return value on output. */ | |
9219021c DC |
16230 | |
16231 | static struct die_info * | |
f2f0e013 | 16232 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
16233 | { |
16234 | struct attribute *attr; | |
9219021c | 16235 | |
f2f0e013 | 16236 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
16237 | if (attr == NULL) |
16238 | return NULL; | |
16239 | ||
f2f0e013 | 16240 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
16241 | } |
16242 | ||
c906108c SS |
16243 | /* Convert a DIE tag into its string name. */ |
16244 | ||
f39c6ffd | 16245 | static const char * |
aa1ee363 | 16246 | dwarf_tag_name (unsigned tag) |
c906108c | 16247 | { |
f39c6ffd TT |
16248 | const char *name = get_DW_TAG_name (tag); |
16249 | ||
16250 | if (name == NULL) | |
16251 | return "DW_TAG_<unknown>"; | |
16252 | ||
16253 | return name; | |
c906108c SS |
16254 | } |
16255 | ||
16256 | /* Convert a DWARF attribute code into its string name. */ | |
16257 | ||
f39c6ffd | 16258 | static const char * |
aa1ee363 | 16259 | dwarf_attr_name (unsigned attr) |
c906108c | 16260 | { |
f39c6ffd TT |
16261 | const char *name; |
16262 | ||
c764a876 | 16263 | #ifdef MIPS /* collides with DW_AT_HP_block_index */ |
f39c6ffd TT |
16264 | if (attr == DW_AT_MIPS_fde) |
16265 | return "DW_AT_MIPS_fde"; | |
16266 | #else | |
16267 | if (attr == DW_AT_HP_block_index) | |
16268 | return "DW_AT_HP_block_index"; | |
c764a876 | 16269 | #endif |
f39c6ffd TT |
16270 | |
16271 | name = get_DW_AT_name (attr); | |
16272 | ||
16273 | if (name == NULL) | |
16274 | return "DW_AT_<unknown>"; | |
16275 | ||
16276 | return name; | |
c906108c SS |
16277 | } |
16278 | ||
16279 | /* Convert a DWARF value form code into its string name. */ | |
16280 | ||
f39c6ffd | 16281 | static const char * |
aa1ee363 | 16282 | dwarf_form_name (unsigned form) |
c906108c | 16283 | { |
f39c6ffd TT |
16284 | const char *name = get_DW_FORM_name (form); |
16285 | ||
16286 | if (name == NULL) | |
16287 | return "DW_FORM_<unknown>"; | |
16288 | ||
16289 | return name; | |
c906108c SS |
16290 | } |
16291 | ||
16292 | static char * | |
fba45db2 | 16293 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
16294 | { |
16295 | if (mybool) | |
16296 | return "TRUE"; | |
16297 | else | |
16298 | return "FALSE"; | |
16299 | } | |
16300 | ||
16301 | /* Convert a DWARF type code into its string name. */ | |
16302 | ||
f39c6ffd | 16303 | static const char * |
aa1ee363 | 16304 | dwarf_type_encoding_name (unsigned enc) |
c906108c | 16305 | { |
f39c6ffd | 16306 | const char *name = get_DW_ATE_name (enc); |
c906108c | 16307 | |
f39c6ffd TT |
16308 | if (name == NULL) |
16309 | return "DW_ATE_<unknown>"; | |
c906108c | 16310 | |
f39c6ffd | 16311 | return name; |
c906108c | 16312 | } |
c906108c | 16313 | |
f9aca02d | 16314 | static void |
d97bc12b | 16315 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
16316 | { |
16317 | unsigned int i; | |
16318 | ||
d97bc12b DE |
16319 | print_spaces (indent, f); |
16320 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset 0x%x)\n", | |
b64f50a1 | 16321 | dwarf_tag_name (die->tag), die->abbrev, die->offset.sect_off); |
d97bc12b DE |
16322 | |
16323 | if (die->parent != NULL) | |
16324 | { | |
16325 | print_spaces (indent, f); | |
16326 | fprintf_unfiltered (f, " parent at offset: 0x%x\n", | |
b64f50a1 | 16327 | die->parent->offset.sect_off); |
d97bc12b DE |
16328 | } |
16329 | ||
16330 | print_spaces (indent, f); | |
16331 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 16332 | dwarf_bool_name (die->child != NULL)); |
c906108c | 16333 | |
d97bc12b DE |
16334 | print_spaces (indent, f); |
16335 | fprintf_unfiltered (f, " attributes:\n"); | |
16336 | ||
c906108c SS |
16337 | for (i = 0; i < die->num_attrs; ++i) |
16338 | { | |
d97bc12b DE |
16339 | print_spaces (indent, f); |
16340 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
16341 | dwarf_attr_name (die->attrs[i].name), |
16342 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 16343 | |
c906108c SS |
16344 | switch (die->attrs[i].form) |
16345 | { | |
c906108c | 16346 | case DW_FORM_addr: |
3019eac3 | 16347 | case DW_FORM_GNU_addr_index: |
d97bc12b | 16348 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 16349 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
16350 | break; |
16351 | case DW_FORM_block2: | |
16352 | case DW_FORM_block4: | |
16353 | case DW_FORM_block: | |
16354 | case DW_FORM_block1: | |
56eb65bd SP |
16355 | fprintf_unfiltered (f, "block: size %s", |
16356 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
c906108c | 16357 | break; |
2dc7f7b3 | 16358 | case DW_FORM_exprloc: |
56eb65bd SP |
16359 | fprintf_unfiltered (f, "expression: size %s", |
16360 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
2dc7f7b3 | 16361 | break; |
4568ecf9 DE |
16362 | case DW_FORM_ref_addr: |
16363 | fprintf_unfiltered (f, "ref address: "); | |
16364 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
16365 | break; | |
36586728 TT |
16366 | case DW_FORM_GNU_ref_alt: |
16367 | fprintf_unfiltered (f, "alt ref address: "); | |
16368 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
16369 | break; | |
10b3939b DJ |
16370 | case DW_FORM_ref1: |
16371 | case DW_FORM_ref2: | |
16372 | case DW_FORM_ref4: | |
4568ecf9 DE |
16373 | case DW_FORM_ref8: |
16374 | case DW_FORM_ref_udata: | |
d97bc12b | 16375 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
4568ecf9 | 16376 | (long) (DW_UNSND (&die->attrs[i]))); |
10b3939b | 16377 | break; |
c906108c SS |
16378 | case DW_FORM_data1: |
16379 | case DW_FORM_data2: | |
16380 | case DW_FORM_data4: | |
ce5d95e1 | 16381 | case DW_FORM_data8: |
c906108c SS |
16382 | case DW_FORM_udata: |
16383 | case DW_FORM_sdata: | |
43bbcdc2 PH |
16384 | fprintf_unfiltered (f, "constant: %s", |
16385 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 16386 | break; |
2dc7f7b3 TT |
16387 | case DW_FORM_sec_offset: |
16388 | fprintf_unfiltered (f, "section offset: %s", | |
16389 | pulongest (DW_UNSND (&die->attrs[i]))); | |
16390 | break; | |
55f1336d | 16391 | case DW_FORM_ref_sig8: |
348e048f DE |
16392 | if (DW_SIGNATURED_TYPE (&die->attrs[i]) != NULL) |
16393 | fprintf_unfiltered (f, "signatured type, offset: 0x%x", | |
b64f50a1 | 16394 | DW_SIGNATURED_TYPE (&die->attrs[i])->per_cu.offset.sect_off); |
348e048f DE |
16395 | else |
16396 | fprintf_unfiltered (f, "signatured type, offset: unknown"); | |
16397 | break; | |
c906108c | 16398 | case DW_FORM_string: |
4bdf3d34 | 16399 | case DW_FORM_strp: |
3019eac3 | 16400 | case DW_FORM_GNU_str_index: |
36586728 | 16401 | case DW_FORM_GNU_strp_alt: |
8285870a | 16402 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 16403 | DW_STRING (&die->attrs[i]) |
8285870a JK |
16404 | ? DW_STRING (&die->attrs[i]) : "", |
16405 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
16406 | break; |
16407 | case DW_FORM_flag: | |
16408 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 16409 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 16410 | else |
d97bc12b | 16411 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 16412 | break; |
2dc7f7b3 TT |
16413 | case DW_FORM_flag_present: |
16414 | fprintf_unfiltered (f, "flag: TRUE"); | |
16415 | break; | |
a8329558 | 16416 | case DW_FORM_indirect: |
0963b4bd MS |
16417 | /* The reader will have reduced the indirect form to |
16418 | the "base form" so this form should not occur. */ | |
3e43a32a MS |
16419 | fprintf_unfiltered (f, |
16420 | "unexpected attribute form: DW_FORM_indirect"); | |
a8329558 | 16421 | break; |
c906108c | 16422 | default: |
d97bc12b | 16423 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 16424 | die->attrs[i].form); |
d97bc12b | 16425 | break; |
c906108c | 16426 | } |
d97bc12b | 16427 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
16428 | } |
16429 | } | |
16430 | ||
f9aca02d | 16431 | static void |
d97bc12b | 16432 | dump_die_for_error (struct die_info *die) |
c906108c | 16433 | { |
d97bc12b DE |
16434 | dump_die_shallow (gdb_stderr, 0, die); |
16435 | } | |
16436 | ||
16437 | static void | |
16438 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
16439 | { | |
16440 | int indent = level * 4; | |
16441 | ||
16442 | gdb_assert (die != NULL); | |
16443 | ||
16444 | if (level >= max_level) | |
16445 | return; | |
16446 | ||
16447 | dump_die_shallow (f, indent, die); | |
16448 | ||
16449 | if (die->child != NULL) | |
c906108c | 16450 | { |
d97bc12b DE |
16451 | print_spaces (indent, f); |
16452 | fprintf_unfiltered (f, " Children:"); | |
16453 | if (level + 1 < max_level) | |
16454 | { | |
16455 | fprintf_unfiltered (f, "\n"); | |
16456 | dump_die_1 (f, level + 1, max_level, die->child); | |
16457 | } | |
16458 | else | |
16459 | { | |
3e43a32a MS |
16460 | fprintf_unfiltered (f, |
16461 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
16462 | } |
16463 | } | |
16464 | ||
16465 | if (die->sibling != NULL && level > 0) | |
16466 | { | |
16467 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
16468 | } |
16469 | } | |
16470 | ||
d97bc12b DE |
16471 | /* This is called from the pdie macro in gdbinit.in. |
16472 | It's not static so gcc will keep a copy callable from gdb. */ | |
16473 | ||
16474 | void | |
16475 | dump_die (struct die_info *die, int max_level) | |
16476 | { | |
16477 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
16478 | } | |
16479 | ||
f9aca02d | 16480 | static void |
51545339 | 16481 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16482 | { |
51545339 | 16483 | void **slot; |
c906108c | 16484 | |
b64f50a1 JK |
16485 | slot = htab_find_slot_with_hash (cu->die_hash, die, die->offset.sect_off, |
16486 | INSERT); | |
51545339 DJ |
16487 | |
16488 | *slot = die; | |
c906108c SS |
16489 | } |
16490 | ||
b64f50a1 JK |
16491 | /* DW_ADDR is always stored already as sect_offset; despite for the forms |
16492 | besides DW_FORM_ref_addr it is stored as cu_offset in the DWARF file. */ | |
16493 | ||
93311388 DE |
16494 | static int |
16495 | is_ref_attr (struct attribute *attr) | |
c906108c | 16496 | { |
c906108c SS |
16497 | switch (attr->form) |
16498 | { | |
16499 | case DW_FORM_ref_addr: | |
c906108c SS |
16500 | case DW_FORM_ref1: |
16501 | case DW_FORM_ref2: | |
16502 | case DW_FORM_ref4: | |
613e1657 | 16503 | case DW_FORM_ref8: |
c906108c | 16504 | case DW_FORM_ref_udata: |
36586728 | 16505 | case DW_FORM_GNU_ref_alt: |
93311388 | 16506 | return 1; |
c906108c | 16507 | default: |
93311388 | 16508 | return 0; |
c906108c | 16509 | } |
93311388 DE |
16510 | } |
16511 | ||
b64f50a1 JK |
16512 | /* Return DIE offset of ATTR. Return 0 with complaint if ATTR is not of the |
16513 | required kind. */ | |
16514 | ||
16515 | static sect_offset | |
93311388 DE |
16516 | dwarf2_get_ref_die_offset (struct attribute *attr) |
16517 | { | |
4568ecf9 | 16518 | sect_offset retval = { DW_UNSND (attr) }; |
b64f50a1 | 16519 | |
93311388 | 16520 | if (is_ref_attr (attr)) |
b64f50a1 | 16521 | return retval; |
93311388 | 16522 | |
b64f50a1 | 16523 | retval.sect_off = 0; |
93311388 DE |
16524 | complaint (&symfile_complaints, |
16525 | _("unsupported die ref attribute form: '%s'"), | |
16526 | dwarf_form_name (attr->form)); | |
b64f50a1 | 16527 | return retval; |
c906108c SS |
16528 | } |
16529 | ||
43bbcdc2 PH |
16530 | /* Return the constant value held by ATTR. Return DEFAULT_VALUE if |
16531 | * the value held by the attribute is not constant. */ | |
a02abb62 | 16532 | |
43bbcdc2 | 16533 | static LONGEST |
a02abb62 JB |
16534 | dwarf2_get_attr_constant_value (struct attribute *attr, int default_value) |
16535 | { | |
16536 | if (attr->form == DW_FORM_sdata) | |
16537 | return DW_SND (attr); | |
16538 | else if (attr->form == DW_FORM_udata | |
16539 | || attr->form == DW_FORM_data1 | |
16540 | || attr->form == DW_FORM_data2 | |
16541 | || attr->form == DW_FORM_data4 | |
16542 | || attr->form == DW_FORM_data8) | |
16543 | return DW_UNSND (attr); | |
16544 | else | |
16545 | { | |
3e43a32a MS |
16546 | complaint (&symfile_complaints, |
16547 | _("Attribute value is not a constant (%s)"), | |
a02abb62 JB |
16548 | dwarf_form_name (attr->form)); |
16549 | return default_value; | |
16550 | } | |
16551 | } | |
16552 | ||
348e048f DE |
16553 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
16554 | On entry *REF_CU is the CU of SRC_DIE. | |
16555 | On exit *REF_CU is the CU of the result. */ | |
16556 | ||
16557 | static struct die_info * | |
16558 | follow_die_ref_or_sig (struct die_info *src_die, struct attribute *attr, | |
16559 | struct dwarf2_cu **ref_cu) | |
16560 | { | |
16561 | struct die_info *die; | |
16562 | ||
16563 | if (is_ref_attr (attr)) | |
16564 | die = follow_die_ref (src_die, attr, ref_cu); | |
55f1336d | 16565 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
16566 | die = follow_die_sig (src_die, attr, ref_cu); |
16567 | else | |
16568 | { | |
16569 | dump_die_for_error (src_die); | |
16570 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
16571 | (*ref_cu)->objfile->name); | |
16572 | } | |
16573 | ||
16574 | return die; | |
03dd20cc DJ |
16575 | } |
16576 | ||
5c631832 | 16577 | /* Follow reference OFFSET. |
673bfd45 DE |
16578 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
16579 | On exit *REF_CU is the CU of the result. | |
16580 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 16581 | |
f9aca02d | 16582 | static struct die_info * |
36586728 TT |
16583 | follow_die_offset (sect_offset offset, int offset_in_dwz, |
16584 | struct dwarf2_cu **ref_cu) | |
c906108c | 16585 | { |
10b3939b | 16586 | struct die_info temp_die; |
f2f0e013 | 16587 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
10b3939b | 16588 | |
348e048f DE |
16589 | gdb_assert (cu->per_cu != NULL); |
16590 | ||
98bfdba5 PA |
16591 | target_cu = cu; |
16592 | ||
3019eac3 | 16593 | if (cu->per_cu->is_debug_types) |
348e048f DE |
16594 | { |
16595 | /* .debug_types CUs cannot reference anything outside their CU. | |
16596 | If they need to, they have to reference a signatured type via | |
55f1336d | 16597 | DW_FORM_ref_sig8. */ |
348e048f | 16598 | if (! offset_in_cu_p (&cu->header, offset)) |
5c631832 | 16599 | return NULL; |
348e048f | 16600 | } |
36586728 TT |
16601 | else if (offset_in_dwz != cu->per_cu->is_dwz |
16602 | || ! offset_in_cu_p (&cu->header, offset)) | |
10b3939b DJ |
16603 | { |
16604 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 16605 | |
36586728 TT |
16606 | per_cu = dwarf2_find_containing_comp_unit (offset, offset_in_dwz, |
16607 | cu->objfile); | |
03dd20cc DJ |
16608 | |
16609 | /* If necessary, add it to the queue and load its DIEs. */ | |
95554aad TT |
16610 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
16611 | load_full_comp_unit (per_cu, cu->language); | |
03dd20cc | 16612 | |
10b3939b DJ |
16613 | target_cu = per_cu->cu; |
16614 | } | |
98bfdba5 PA |
16615 | else if (cu->dies == NULL) |
16616 | { | |
16617 | /* We're loading full DIEs during partial symbol reading. */ | |
16618 | gdb_assert (dwarf2_per_objfile->reading_partial_symbols); | |
95554aad | 16619 | load_full_comp_unit (cu->per_cu, language_minimal); |
98bfdba5 | 16620 | } |
c906108c | 16621 | |
f2f0e013 | 16622 | *ref_cu = target_cu; |
51545339 | 16623 | temp_die.offset = offset; |
b64f50a1 | 16624 | return htab_find_with_hash (target_cu->die_hash, &temp_die, offset.sect_off); |
5c631832 | 16625 | } |
10b3939b | 16626 | |
5c631832 JK |
16627 | /* Follow reference attribute ATTR of SRC_DIE. |
16628 | On entry *REF_CU is the CU of SRC_DIE. | |
16629 | On exit *REF_CU is the CU of the result. */ | |
16630 | ||
16631 | static struct die_info * | |
16632 | follow_die_ref (struct die_info *src_die, struct attribute *attr, | |
16633 | struct dwarf2_cu **ref_cu) | |
16634 | { | |
b64f50a1 | 16635 | sect_offset offset = dwarf2_get_ref_die_offset (attr); |
5c631832 JK |
16636 | struct dwarf2_cu *cu = *ref_cu; |
16637 | struct die_info *die; | |
16638 | ||
36586728 TT |
16639 | die = follow_die_offset (offset, |
16640 | (attr->form == DW_FORM_GNU_ref_alt | |
16641 | || cu->per_cu->is_dwz), | |
16642 | ref_cu); | |
5c631832 JK |
16643 | if (!die) |
16644 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced from DIE " | |
16645 | "at 0x%x [in module %s]"), | |
b64f50a1 | 16646 | offset.sect_off, src_die->offset.sect_off, cu->objfile->name); |
348e048f | 16647 | |
5c631832 JK |
16648 | return die; |
16649 | } | |
16650 | ||
d83e736b JK |
16651 | /* Return DWARF block referenced by DW_AT_location of DIE at OFFSET at PER_CU. |
16652 | Returned value is intended for DW_OP_call*. Returned | |
16653 | dwarf2_locexpr_baton->data has lifetime of PER_CU->OBJFILE. */ | |
5c631832 JK |
16654 | |
16655 | struct dwarf2_locexpr_baton | |
b64f50a1 | 16656 | dwarf2_fetch_die_location_block (cu_offset offset_in_cu, |
8cf6f0b1 TT |
16657 | struct dwarf2_per_cu_data *per_cu, |
16658 | CORE_ADDR (*get_frame_pc) (void *baton), | |
16659 | void *baton) | |
5c631832 | 16660 | { |
b64f50a1 | 16661 | sect_offset offset = { per_cu->offset.sect_off + offset_in_cu.cu_off }; |
918dd910 | 16662 | struct dwarf2_cu *cu; |
5c631832 JK |
16663 | struct die_info *die; |
16664 | struct attribute *attr; | |
16665 | struct dwarf2_locexpr_baton retval; | |
16666 | ||
8cf6f0b1 TT |
16667 | dw2_setup (per_cu->objfile); |
16668 | ||
918dd910 JK |
16669 | if (per_cu->cu == NULL) |
16670 | load_cu (per_cu); | |
16671 | cu = per_cu->cu; | |
16672 | ||
36586728 | 16673 | die = follow_die_offset (offset, per_cu->is_dwz, &cu); |
5c631832 JK |
16674 | if (!die) |
16675 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced in module %s"), | |
b64f50a1 | 16676 | offset.sect_off, per_cu->objfile->name); |
5c631832 JK |
16677 | |
16678 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
16679 | if (!attr) | |
16680 | { | |
e103e986 JK |
16681 | /* DWARF: "If there is no such attribute, then there is no effect.". |
16682 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 16683 | |
e103e986 | 16684 | retval.data = NULL; |
5c631832 JK |
16685 | retval.size = 0; |
16686 | } | |
8cf6f0b1 TT |
16687 | else if (attr_form_is_section_offset (attr)) |
16688 | { | |
16689 | struct dwarf2_loclist_baton loclist_baton; | |
16690 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
16691 | size_t size; | |
16692 | ||
16693 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
16694 | ||
16695 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
16696 | &size, pc); | |
16697 | retval.size = size; | |
16698 | } | |
5c631832 JK |
16699 | else |
16700 | { | |
16701 | if (!attr_form_is_block (attr)) | |
16702 | error (_("Dwarf Error: DIE at 0x%x referenced in module %s " | |
16703 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), | |
b64f50a1 | 16704 | offset.sect_off, per_cu->objfile->name); |
5c631832 JK |
16705 | |
16706 | retval.data = DW_BLOCK (attr)->data; | |
16707 | retval.size = DW_BLOCK (attr)->size; | |
16708 | } | |
16709 | retval.per_cu = cu->per_cu; | |
918dd910 | 16710 | |
918dd910 JK |
16711 | age_cached_comp_units (); |
16712 | ||
5c631832 | 16713 | return retval; |
348e048f DE |
16714 | } |
16715 | ||
8a9b8146 TT |
16716 | /* Return the type of the DIE at DIE_OFFSET in the CU named by |
16717 | PER_CU. */ | |
16718 | ||
16719 | struct type * | |
b64f50a1 | 16720 | dwarf2_get_die_type (cu_offset die_offset, |
8a9b8146 TT |
16721 | struct dwarf2_per_cu_data *per_cu) |
16722 | { | |
b64f50a1 JK |
16723 | sect_offset die_offset_sect; |
16724 | ||
8a9b8146 | 16725 | dw2_setup (per_cu->objfile); |
b64f50a1 JK |
16726 | |
16727 | die_offset_sect.sect_off = per_cu->offset.sect_off + die_offset.cu_off; | |
16728 | return get_die_type_at_offset (die_offset_sect, per_cu); | |
8a9b8146 TT |
16729 | } |
16730 | ||
348e048f DE |
16731 | /* Follow the signature attribute ATTR in SRC_DIE. |
16732 | On entry *REF_CU is the CU of SRC_DIE. | |
16733 | On exit *REF_CU is the CU of the result. */ | |
16734 | ||
16735 | static struct die_info * | |
16736 | follow_die_sig (struct die_info *src_die, struct attribute *attr, | |
16737 | struct dwarf2_cu **ref_cu) | |
16738 | { | |
16739 | struct objfile *objfile = (*ref_cu)->objfile; | |
16740 | struct die_info temp_die; | |
16741 | struct signatured_type *sig_type = DW_SIGNATURED_TYPE (attr); | |
16742 | struct dwarf2_cu *sig_cu; | |
16743 | struct die_info *die; | |
16744 | ||
16745 | /* sig_type will be NULL if the signatured type is missing from | |
16746 | the debug info. */ | |
16747 | if (sig_type == NULL) | |
16748 | error (_("Dwarf Error: Cannot find signatured DIE referenced from DIE " | |
16749 | "at 0x%x [in module %s]"), | |
b64f50a1 | 16750 | src_die->offset.sect_off, objfile->name); |
348e048f DE |
16751 | |
16752 | /* If necessary, add it to the queue and load its DIEs. */ | |
16753 | ||
95554aad | 16754 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, language_minimal)) |
a0f42c21 | 16755 | read_signatured_type (sig_type); |
348e048f DE |
16756 | |
16757 | gdb_assert (sig_type->per_cu.cu != NULL); | |
16758 | ||
16759 | sig_cu = sig_type->per_cu.cu; | |
3019eac3 DE |
16760 | gdb_assert (sig_type->type_offset_in_section.sect_off != 0); |
16761 | temp_die.offset = sig_type->type_offset_in_section; | |
b64f50a1 JK |
16762 | die = htab_find_with_hash (sig_cu->die_hash, &temp_die, |
16763 | temp_die.offset.sect_off); | |
348e048f DE |
16764 | if (die) |
16765 | { | |
16766 | *ref_cu = sig_cu; | |
16767 | return die; | |
16768 | } | |
16769 | ||
3e43a32a MS |
16770 | error (_("Dwarf Error: Cannot find signatured DIE at 0x%x referenced " |
16771 | "from DIE at 0x%x [in module %s]"), | |
b64f50a1 | 16772 | temp_die.offset.sect_off, src_die->offset.sect_off, objfile->name); |
348e048f DE |
16773 | } |
16774 | ||
16775 | /* Given an offset of a signatured type, return its signatured_type. */ | |
16776 | ||
16777 | static struct signatured_type * | |
8b70b953 TT |
16778 | lookup_signatured_type_at_offset (struct objfile *objfile, |
16779 | struct dwarf2_section_info *section, | |
b64f50a1 | 16780 | sect_offset offset) |
348e048f | 16781 | { |
b64f50a1 | 16782 | gdb_byte *info_ptr = section->buffer + offset.sect_off; |
348e048f DE |
16783 | unsigned int length, initial_length_size; |
16784 | unsigned int sig_offset; | |
52dc124a | 16785 | struct signatured_type find_entry, *sig_type; |
348e048f DE |
16786 | |
16787 | length = read_initial_length (objfile->obfd, info_ptr, &initial_length_size); | |
16788 | sig_offset = (initial_length_size | |
16789 | + 2 /*version*/ | |
16790 | + (initial_length_size == 4 ? 4 : 8) /*debug_abbrev_offset*/ | |
16791 | + 1 /*address_size*/); | |
16792 | find_entry.signature = bfd_get_64 (objfile->obfd, info_ptr + sig_offset); | |
52dc124a | 16793 | sig_type = htab_find (dwarf2_per_objfile->signatured_types, &find_entry); |
348e048f DE |
16794 | |
16795 | /* This is only used to lookup previously recorded types. | |
16796 | If we didn't find it, it's our bug. */ | |
52dc124a DE |
16797 | gdb_assert (sig_type != NULL); |
16798 | gdb_assert (offset.sect_off == sig_type->per_cu.offset.sect_off); | |
348e048f | 16799 | |
52dc124a | 16800 | return sig_type; |
348e048f DE |
16801 | } |
16802 | ||
e5fe5e75 | 16803 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
16804 | |
16805 | static void | |
e5fe5e75 | 16806 | load_full_type_unit (struct dwarf2_per_cu_data *per_cu) |
348e048f | 16807 | { |
52dc124a | 16808 | struct signatured_type *sig_type; |
348e048f | 16809 | |
f4dc4d17 DE |
16810 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
16811 | gdb_assert (! IS_TYPE_UNIT_GROUP (per_cu)); | |
16812 | ||
6721b2ec DE |
16813 | /* We have the per_cu, but we need the signatured_type. |
16814 | Fortunately this is an easy translation. */ | |
16815 | gdb_assert (per_cu->is_debug_types); | |
16816 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 16817 | |
6721b2ec | 16818 | gdb_assert (per_cu->cu == NULL); |
348e048f | 16819 | |
52dc124a | 16820 | read_signatured_type (sig_type); |
348e048f | 16821 | |
6721b2ec | 16822 | gdb_assert (per_cu->cu != NULL); |
348e048f DE |
16823 | } |
16824 | ||
dee91e82 DE |
16825 | /* die_reader_func for read_signatured_type. |
16826 | This is identical to load_full_comp_unit_reader, | |
16827 | but is kept separate for now. */ | |
348e048f DE |
16828 | |
16829 | static void | |
dee91e82 DE |
16830 | read_signatured_type_reader (const struct die_reader_specs *reader, |
16831 | gdb_byte *info_ptr, | |
16832 | struct die_info *comp_unit_die, | |
16833 | int has_children, | |
16834 | void *data) | |
348e048f | 16835 | { |
dee91e82 | 16836 | struct dwarf2_cu *cu = reader->cu; |
348e048f | 16837 | |
dee91e82 DE |
16838 | gdb_assert (cu->die_hash == NULL); |
16839 | cu->die_hash = | |
16840 | htab_create_alloc_ex (cu->header.length / 12, | |
16841 | die_hash, | |
16842 | die_eq, | |
16843 | NULL, | |
16844 | &cu->comp_unit_obstack, | |
16845 | hashtab_obstack_allocate, | |
16846 | dummy_obstack_deallocate); | |
348e048f | 16847 | |
dee91e82 DE |
16848 | if (has_children) |
16849 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
16850 | &info_ptr, comp_unit_die); | |
16851 | cu->dies = comp_unit_die; | |
16852 | /* comp_unit_die is not stored in die_hash, no need. */ | |
348e048f DE |
16853 | |
16854 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 16855 | all CUs needed for references have been loaded yet, and symbol |
348e048f | 16856 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
16857 | or we won't be able to build types correctly. |
16858 | Similarly, if we do not read the producer, we can not apply | |
16859 | producer-specific interpretation. */ | |
95554aad | 16860 | prepare_one_comp_unit (cu, cu->dies, language_minimal); |
dee91e82 | 16861 | } |
348e048f | 16862 | |
3019eac3 DE |
16863 | /* Read in a signatured type and build its CU and DIEs. |
16864 | If the type is a stub for the real type in a DWO file, | |
16865 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
16866 | |
16867 | static void | |
16868 | read_signatured_type (struct signatured_type *sig_type) | |
16869 | { | |
16870 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 16871 | |
3019eac3 | 16872 | gdb_assert (per_cu->is_debug_types); |
dee91e82 | 16873 | gdb_assert (per_cu->cu == NULL); |
348e048f | 16874 | |
f4dc4d17 DE |
16875 | init_cutu_and_read_dies (per_cu, NULL, 0, 1, |
16876 | read_signatured_type_reader, NULL); | |
c906108c SS |
16877 | } |
16878 | ||
c906108c SS |
16879 | /* Decode simple location descriptions. |
16880 | Given a pointer to a dwarf block that defines a location, compute | |
16881 | the location and return the value. | |
16882 | ||
4cecd739 DJ |
16883 | NOTE drow/2003-11-18: This function is called in two situations |
16884 | now: for the address of static or global variables (partial symbols | |
16885 | only) and for offsets into structures which are expected to be | |
16886 | (more or less) constant. The partial symbol case should go away, | |
16887 | and only the constant case should remain. That will let this | |
16888 | function complain more accurately. A few special modes are allowed | |
16889 | without complaint for global variables (for instance, global | |
16890 | register values and thread-local values). | |
c906108c SS |
16891 | |
16892 | A location description containing no operations indicates that the | |
4cecd739 | 16893 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
16894 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
16895 | callers will only want a very basic result and this can become a | |
21ae7a4d JK |
16896 | complaint. |
16897 | ||
16898 | Note that stack[0] is unused except as a default error return. */ | |
c906108c SS |
16899 | |
16900 | static CORE_ADDR | |
e7c27a73 | 16901 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 16902 | { |
e7c27a73 | 16903 | struct objfile *objfile = cu->objfile; |
56eb65bd SP |
16904 | size_t i; |
16905 | size_t size = blk->size; | |
21ae7a4d JK |
16906 | gdb_byte *data = blk->data; |
16907 | CORE_ADDR stack[64]; | |
16908 | int stacki; | |
16909 | unsigned int bytes_read, unsnd; | |
16910 | gdb_byte op; | |
c906108c | 16911 | |
21ae7a4d JK |
16912 | i = 0; |
16913 | stacki = 0; | |
16914 | stack[stacki] = 0; | |
16915 | stack[++stacki] = 0; | |
16916 | ||
16917 | while (i < size) | |
16918 | { | |
16919 | op = data[i++]; | |
16920 | switch (op) | |
16921 | { | |
16922 | case DW_OP_lit0: | |
16923 | case DW_OP_lit1: | |
16924 | case DW_OP_lit2: | |
16925 | case DW_OP_lit3: | |
16926 | case DW_OP_lit4: | |
16927 | case DW_OP_lit5: | |
16928 | case DW_OP_lit6: | |
16929 | case DW_OP_lit7: | |
16930 | case DW_OP_lit8: | |
16931 | case DW_OP_lit9: | |
16932 | case DW_OP_lit10: | |
16933 | case DW_OP_lit11: | |
16934 | case DW_OP_lit12: | |
16935 | case DW_OP_lit13: | |
16936 | case DW_OP_lit14: | |
16937 | case DW_OP_lit15: | |
16938 | case DW_OP_lit16: | |
16939 | case DW_OP_lit17: | |
16940 | case DW_OP_lit18: | |
16941 | case DW_OP_lit19: | |
16942 | case DW_OP_lit20: | |
16943 | case DW_OP_lit21: | |
16944 | case DW_OP_lit22: | |
16945 | case DW_OP_lit23: | |
16946 | case DW_OP_lit24: | |
16947 | case DW_OP_lit25: | |
16948 | case DW_OP_lit26: | |
16949 | case DW_OP_lit27: | |
16950 | case DW_OP_lit28: | |
16951 | case DW_OP_lit29: | |
16952 | case DW_OP_lit30: | |
16953 | case DW_OP_lit31: | |
16954 | stack[++stacki] = op - DW_OP_lit0; | |
16955 | break; | |
f1bea926 | 16956 | |
21ae7a4d JK |
16957 | case DW_OP_reg0: |
16958 | case DW_OP_reg1: | |
16959 | case DW_OP_reg2: | |
16960 | case DW_OP_reg3: | |
16961 | case DW_OP_reg4: | |
16962 | case DW_OP_reg5: | |
16963 | case DW_OP_reg6: | |
16964 | case DW_OP_reg7: | |
16965 | case DW_OP_reg8: | |
16966 | case DW_OP_reg9: | |
16967 | case DW_OP_reg10: | |
16968 | case DW_OP_reg11: | |
16969 | case DW_OP_reg12: | |
16970 | case DW_OP_reg13: | |
16971 | case DW_OP_reg14: | |
16972 | case DW_OP_reg15: | |
16973 | case DW_OP_reg16: | |
16974 | case DW_OP_reg17: | |
16975 | case DW_OP_reg18: | |
16976 | case DW_OP_reg19: | |
16977 | case DW_OP_reg20: | |
16978 | case DW_OP_reg21: | |
16979 | case DW_OP_reg22: | |
16980 | case DW_OP_reg23: | |
16981 | case DW_OP_reg24: | |
16982 | case DW_OP_reg25: | |
16983 | case DW_OP_reg26: | |
16984 | case DW_OP_reg27: | |
16985 | case DW_OP_reg28: | |
16986 | case DW_OP_reg29: | |
16987 | case DW_OP_reg30: | |
16988 | case DW_OP_reg31: | |
16989 | stack[++stacki] = op - DW_OP_reg0; | |
16990 | if (i < size) | |
16991 | dwarf2_complex_location_expr_complaint (); | |
16992 | break; | |
c906108c | 16993 | |
21ae7a4d JK |
16994 | case DW_OP_regx: |
16995 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
16996 | i += bytes_read; | |
16997 | stack[++stacki] = unsnd; | |
16998 | if (i < size) | |
16999 | dwarf2_complex_location_expr_complaint (); | |
17000 | break; | |
c906108c | 17001 | |
21ae7a4d JK |
17002 | case DW_OP_addr: |
17003 | stack[++stacki] = read_address (objfile->obfd, &data[i], | |
17004 | cu, &bytes_read); | |
17005 | i += bytes_read; | |
17006 | break; | |
d53d4ac5 | 17007 | |
21ae7a4d JK |
17008 | case DW_OP_const1u: |
17009 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
17010 | i += 1; | |
17011 | break; | |
17012 | ||
17013 | case DW_OP_const1s: | |
17014 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
17015 | i += 1; | |
17016 | break; | |
17017 | ||
17018 | case DW_OP_const2u: | |
17019 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
17020 | i += 2; | |
17021 | break; | |
17022 | ||
17023 | case DW_OP_const2s: | |
17024 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
17025 | i += 2; | |
17026 | break; | |
d53d4ac5 | 17027 | |
21ae7a4d JK |
17028 | case DW_OP_const4u: |
17029 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
17030 | i += 4; | |
17031 | break; | |
17032 | ||
17033 | case DW_OP_const4s: | |
17034 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
17035 | i += 4; | |
17036 | break; | |
17037 | ||
585861ea JK |
17038 | case DW_OP_const8u: |
17039 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
17040 | i += 8; | |
17041 | break; | |
17042 | ||
21ae7a4d JK |
17043 | case DW_OP_constu: |
17044 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
17045 | &bytes_read); | |
17046 | i += bytes_read; | |
17047 | break; | |
17048 | ||
17049 | case DW_OP_consts: | |
17050 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
17051 | i += bytes_read; | |
17052 | break; | |
17053 | ||
17054 | case DW_OP_dup: | |
17055 | stack[stacki + 1] = stack[stacki]; | |
17056 | stacki++; | |
17057 | break; | |
17058 | ||
17059 | case DW_OP_plus: | |
17060 | stack[stacki - 1] += stack[stacki]; | |
17061 | stacki--; | |
17062 | break; | |
17063 | ||
17064 | case DW_OP_plus_uconst: | |
17065 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
17066 | &bytes_read); | |
17067 | i += bytes_read; | |
17068 | break; | |
17069 | ||
17070 | case DW_OP_minus: | |
17071 | stack[stacki - 1] -= stack[stacki]; | |
17072 | stacki--; | |
17073 | break; | |
17074 | ||
17075 | case DW_OP_deref: | |
17076 | /* If we're not the last op, then we definitely can't encode | |
17077 | this using GDB's address_class enum. This is valid for partial | |
17078 | global symbols, although the variable's address will be bogus | |
17079 | in the psymtab. */ | |
17080 | if (i < size) | |
17081 | dwarf2_complex_location_expr_complaint (); | |
17082 | break; | |
17083 | ||
17084 | case DW_OP_GNU_push_tls_address: | |
17085 | /* The top of the stack has the offset from the beginning | |
17086 | of the thread control block at which the variable is located. */ | |
17087 | /* Nothing should follow this operator, so the top of stack would | |
17088 | be returned. */ | |
17089 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
17090 | address will be bogus in the psymtab. Make it always at least |
17091 | non-zero to not look as a variable garbage collected by linker | |
17092 | which have DW_OP_addr 0. */ | |
21ae7a4d JK |
17093 | if (i < size) |
17094 | dwarf2_complex_location_expr_complaint (); | |
585861ea | 17095 | stack[stacki]++; |
21ae7a4d JK |
17096 | break; |
17097 | ||
17098 | case DW_OP_GNU_uninit: | |
17099 | break; | |
17100 | ||
3019eac3 | 17101 | case DW_OP_GNU_addr_index: |
49f6c839 | 17102 | case DW_OP_GNU_const_index: |
3019eac3 DE |
17103 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
17104 | &bytes_read); | |
17105 | i += bytes_read; | |
17106 | break; | |
17107 | ||
21ae7a4d JK |
17108 | default: |
17109 | { | |
f39c6ffd | 17110 | const char *name = get_DW_OP_name (op); |
21ae7a4d JK |
17111 | |
17112 | if (name) | |
17113 | complaint (&symfile_complaints, _("unsupported stack op: '%s'"), | |
17114 | name); | |
17115 | else | |
17116 | complaint (&symfile_complaints, _("unsupported stack op: '%02x'"), | |
17117 | op); | |
17118 | } | |
17119 | ||
17120 | return (stack[stacki]); | |
d53d4ac5 | 17121 | } |
3c6e0cb3 | 17122 | |
21ae7a4d JK |
17123 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
17124 | outside of the allocated space. Also enforce minimum>0. */ | |
17125 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
17126 | { | |
17127 | complaint (&symfile_complaints, | |
17128 | _("location description stack overflow")); | |
17129 | return 0; | |
17130 | } | |
17131 | ||
17132 | if (stacki <= 0) | |
17133 | { | |
17134 | complaint (&symfile_complaints, | |
17135 | _("location description stack underflow")); | |
17136 | return 0; | |
17137 | } | |
17138 | } | |
17139 | return (stack[stacki]); | |
c906108c SS |
17140 | } |
17141 | ||
17142 | /* memory allocation interface */ | |
17143 | ||
c906108c | 17144 | static struct dwarf_block * |
7b5a2f43 | 17145 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c SS |
17146 | { |
17147 | struct dwarf_block *blk; | |
17148 | ||
17149 | blk = (struct dwarf_block *) | |
7b5a2f43 | 17150 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct dwarf_block)); |
c906108c SS |
17151 | return (blk); |
17152 | } | |
17153 | ||
c906108c | 17154 | static struct die_info * |
b60c80d6 | 17155 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
17156 | { |
17157 | struct die_info *die; | |
b60c80d6 DJ |
17158 | size_t size = sizeof (struct die_info); |
17159 | ||
17160 | if (num_attrs > 1) | |
17161 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 17162 | |
b60c80d6 | 17163 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
17164 | memset (die, 0, sizeof (struct die_info)); |
17165 | return (die); | |
17166 | } | |
2e276125 JB |
17167 | |
17168 | \f | |
17169 | /* Macro support. */ | |
17170 | ||
2e276125 JB |
17171 | /* Return the full name of file number I in *LH's file name table. |
17172 | Use COMP_DIR as the name of the current directory of the | |
17173 | compilation. The result is allocated using xmalloc; the caller is | |
17174 | responsible for freeing it. */ | |
17175 | static char * | |
17176 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
17177 | { | |
6a83a1e6 EZ |
17178 | /* Is the file number a valid index into the line header's file name |
17179 | table? Remember that file numbers start with one, not zero. */ | |
17180 | if (1 <= file && file <= lh->num_file_names) | |
17181 | { | |
17182 | struct file_entry *fe = &lh->file_names[file - 1]; | |
6e70227d | 17183 | |
6a83a1e6 EZ |
17184 | if (IS_ABSOLUTE_PATH (fe->name)) |
17185 | return xstrdup (fe->name); | |
17186 | else | |
17187 | { | |
17188 | const char *dir; | |
17189 | int dir_len; | |
17190 | char *full_name; | |
17191 | ||
17192 | if (fe->dir_index) | |
17193 | dir = lh->include_dirs[fe->dir_index - 1]; | |
17194 | else | |
17195 | dir = comp_dir; | |
17196 | ||
17197 | if (dir) | |
17198 | { | |
17199 | dir_len = strlen (dir); | |
17200 | full_name = xmalloc (dir_len + 1 + strlen (fe->name) + 1); | |
17201 | strcpy (full_name, dir); | |
17202 | full_name[dir_len] = '/'; | |
17203 | strcpy (full_name + dir_len + 1, fe->name); | |
17204 | return full_name; | |
17205 | } | |
17206 | else | |
17207 | return xstrdup (fe->name); | |
17208 | } | |
17209 | } | |
2e276125 JB |
17210 | else |
17211 | { | |
6a83a1e6 EZ |
17212 | /* The compiler produced a bogus file number. We can at least |
17213 | record the macro definitions made in the file, even if we | |
17214 | won't be able to find the file by name. */ | |
17215 | char fake_name[80]; | |
9a619af0 | 17216 | |
6a83a1e6 | 17217 | sprintf (fake_name, "<bad macro file number %d>", file); |
2e276125 | 17218 | |
6e70227d | 17219 | complaint (&symfile_complaints, |
6a83a1e6 EZ |
17220 | _("bad file number in macro information (%d)"), |
17221 | file); | |
2e276125 | 17222 | |
6a83a1e6 | 17223 | return xstrdup (fake_name); |
2e276125 JB |
17224 | } |
17225 | } | |
17226 | ||
17227 | ||
17228 | static struct macro_source_file * | |
17229 | macro_start_file (int file, int line, | |
17230 | struct macro_source_file *current_file, | |
17231 | const char *comp_dir, | |
17232 | struct line_header *lh, struct objfile *objfile) | |
17233 | { | |
17234 | /* The full name of this source file. */ | |
17235 | char *full_name = file_full_name (file, lh, comp_dir); | |
17236 | ||
17237 | /* We don't create a macro table for this compilation unit | |
17238 | at all until we actually get a filename. */ | |
17239 | if (! pending_macros) | |
6532ff36 TT |
17240 | pending_macros = new_macro_table (&objfile->per_bfd->storage_obstack, |
17241 | objfile->per_bfd->macro_cache); | |
2e276125 JB |
17242 | |
17243 | if (! current_file) | |
abc9d0dc TT |
17244 | { |
17245 | /* If we have no current file, then this must be the start_file | |
17246 | directive for the compilation unit's main source file. */ | |
17247 | current_file = macro_set_main (pending_macros, full_name); | |
17248 | macro_define_special (pending_macros); | |
17249 | } | |
2e276125 JB |
17250 | else |
17251 | current_file = macro_include (current_file, line, full_name); | |
17252 | ||
17253 | xfree (full_name); | |
6e70227d | 17254 | |
2e276125 JB |
17255 | return current_file; |
17256 | } | |
17257 | ||
17258 | ||
17259 | /* Copy the LEN characters at BUF to a xmalloc'ed block of memory, | |
17260 | followed by a null byte. */ | |
17261 | static char * | |
17262 | copy_string (const char *buf, int len) | |
17263 | { | |
17264 | char *s = xmalloc (len + 1); | |
9a619af0 | 17265 | |
2e276125 JB |
17266 | memcpy (s, buf, len); |
17267 | s[len] = '\0'; | |
2e276125 JB |
17268 | return s; |
17269 | } | |
17270 | ||
17271 | ||
17272 | static const char * | |
17273 | consume_improper_spaces (const char *p, const char *body) | |
17274 | { | |
17275 | if (*p == ' ') | |
17276 | { | |
4d3c2250 | 17277 | complaint (&symfile_complaints, |
3e43a32a MS |
17278 | _("macro definition contains spaces " |
17279 | "in formal argument list:\n`%s'"), | |
4d3c2250 | 17280 | body); |
2e276125 JB |
17281 | |
17282 | while (*p == ' ') | |
17283 | p++; | |
17284 | } | |
17285 | ||
17286 | return p; | |
17287 | } | |
17288 | ||
17289 | ||
17290 | static void | |
17291 | parse_macro_definition (struct macro_source_file *file, int line, | |
17292 | const char *body) | |
17293 | { | |
17294 | const char *p; | |
17295 | ||
17296 | /* The body string takes one of two forms. For object-like macro | |
17297 | definitions, it should be: | |
17298 | ||
17299 | <macro name> " " <definition> | |
17300 | ||
17301 | For function-like macro definitions, it should be: | |
17302 | ||
17303 | <macro name> "() " <definition> | |
17304 | or | |
17305 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
17306 | ||
17307 | Spaces may appear only where explicitly indicated, and in the | |
17308 | <definition>. | |
17309 | ||
17310 | The Dwarf 2 spec says that an object-like macro's name is always | |
17311 | followed by a space, but versions of GCC around March 2002 omit | |
6e70227d | 17312 | the space when the macro's definition is the empty string. |
2e276125 JB |
17313 | |
17314 | The Dwarf 2 spec says that there should be no spaces between the | |
17315 | formal arguments in a function-like macro's formal argument list, | |
17316 | but versions of GCC around March 2002 include spaces after the | |
17317 | commas. */ | |
17318 | ||
17319 | ||
17320 | /* Find the extent of the macro name. The macro name is terminated | |
17321 | by either a space or null character (for an object-like macro) or | |
17322 | an opening paren (for a function-like macro). */ | |
17323 | for (p = body; *p; p++) | |
17324 | if (*p == ' ' || *p == '(') | |
17325 | break; | |
17326 | ||
17327 | if (*p == ' ' || *p == '\0') | |
17328 | { | |
17329 | /* It's an object-like macro. */ | |
17330 | int name_len = p - body; | |
17331 | char *name = copy_string (body, name_len); | |
17332 | const char *replacement; | |
17333 | ||
17334 | if (*p == ' ') | |
17335 | replacement = body + name_len + 1; | |
17336 | else | |
17337 | { | |
4d3c2250 | 17338 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
17339 | replacement = body + name_len; |
17340 | } | |
6e70227d | 17341 | |
2e276125 JB |
17342 | macro_define_object (file, line, name, replacement); |
17343 | ||
17344 | xfree (name); | |
17345 | } | |
17346 | else if (*p == '(') | |
17347 | { | |
17348 | /* It's a function-like macro. */ | |
17349 | char *name = copy_string (body, p - body); | |
17350 | int argc = 0; | |
17351 | int argv_size = 1; | |
17352 | char **argv = xmalloc (argv_size * sizeof (*argv)); | |
17353 | ||
17354 | p++; | |
17355 | ||
17356 | p = consume_improper_spaces (p, body); | |
17357 | ||
17358 | /* Parse the formal argument list. */ | |
17359 | while (*p && *p != ')') | |
17360 | { | |
17361 | /* Find the extent of the current argument name. */ | |
17362 | const char *arg_start = p; | |
17363 | ||
17364 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
17365 | p++; | |
17366 | ||
17367 | if (! *p || p == arg_start) | |
4d3c2250 | 17368 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
17369 | else |
17370 | { | |
17371 | /* Make sure argv has room for the new argument. */ | |
17372 | if (argc >= argv_size) | |
17373 | { | |
17374 | argv_size *= 2; | |
17375 | argv = xrealloc (argv, argv_size * sizeof (*argv)); | |
17376 | } | |
17377 | ||
17378 | argv[argc++] = copy_string (arg_start, p - arg_start); | |
17379 | } | |
17380 | ||
17381 | p = consume_improper_spaces (p, body); | |
17382 | ||
17383 | /* Consume the comma, if present. */ | |
17384 | if (*p == ',') | |
17385 | { | |
17386 | p++; | |
17387 | ||
17388 | p = consume_improper_spaces (p, body); | |
17389 | } | |
17390 | } | |
17391 | ||
17392 | if (*p == ')') | |
17393 | { | |
17394 | p++; | |
17395 | ||
17396 | if (*p == ' ') | |
17397 | /* Perfectly formed definition, no complaints. */ | |
17398 | macro_define_function (file, line, name, | |
6e70227d | 17399 | argc, (const char **) argv, |
2e276125 JB |
17400 | p + 1); |
17401 | else if (*p == '\0') | |
17402 | { | |
17403 | /* Complain, but do define it. */ | |
4d3c2250 | 17404 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 | 17405 | macro_define_function (file, line, name, |
6e70227d | 17406 | argc, (const char **) argv, |
2e276125 JB |
17407 | p); |
17408 | } | |
17409 | else | |
17410 | /* Just complain. */ | |
4d3c2250 | 17411 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
17412 | } |
17413 | else | |
17414 | /* Just complain. */ | |
4d3c2250 | 17415 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
17416 | |
17417 | xfree (name); | |
17418 | { | |
17419 | int i; | |
17420 | ||
17421 | for (i = 0; i < argc; i++) | |
17422 | xfree (argv[i]); | |
17423 | } | |
17424 | xfree (argv); | |
17425 | } | |
17426 | else | |
4d3c2250 | 17427 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
17428 | } |
17429 | ||
cf2c3c16 TT |
17430 | /* Skip some bytes from BYTES according to the form given in FORM. |
17431 | Returns the new pointer. */ | |
2e276125 | 17432 | |
cf2c3c16 | 17433 | static gdb_byte * |
f664829e | 17434 | skip_form_bytes (bfd *abfd, gdb_byte *bytes, gdb_byte *buffer_end, |
cf2c3c16 TT |
17435 | enum dwarf_form form, |
17436 | unsigned int offset_size, | |
17437 | struct dwarf2_section_info *section) | |
2e276125 | 17438 | { |
cf2c3c16 | 17439 | unsigned int bytes_read; |
2e276125 | 17440 | |
cf2c3c16 | 17441 | switch (form) |
2e276125 | 17442 | { |
cf2c3c16 TT |
17443 | case DW_FORM_data1: |
17444 | case DW_FORM_flag: | |
17445 | ++bytes; | |
17446 | break; | |
17447 | ||
17448 | case DW_FORM_data2: | |
17449 | bytes += 2; | |
17450 | break; | |
17451 | ||
17452 | case DW_FORM_data4: | |
17453 | bytes += 4; | |
17454 | break; | |
17455 | ||
17456 | case DW_FORM_data8: | |
17457 | bytes += 8; | |
17458 | break; | |
17459 | ||
17460 | case DW_FORM_string: | |
17461 | read_direct_string (abfd, bytes, &bytes_read); | |
17462 | bytes += bytes_read; | |
17463 | break; | |
17464 | ||
17465 | case DW_FORM_sec_offset: | |
17466 | case DW_FORM_strp: | |
36586728 | 17467 | case DW_FORM_GNU_strp_alt: |
cf2c3c16 TT |
17468 | bytes += offset_size; |
17469 | break; | |
17470 | ||
17471 | case DW_FORM_block: | |
17472 | bytes += read_unsigned_leb128 (abfd, bytes, &bytes_read); | |
17473 | bytes += bytes_read; | |
17474 | break; | |
17475 | ||
17476 | case DW_FORM_block1: | |
17477 | bytes += 1 + read_1_byte (abfd, bytes); | |
17478 | break; | |
17479 | case DW_FORM_block2: | |
17480 | bytes += 2 + read_2_bytes (abfd, bytes); | |
17481 | break; | |
17482 | case DW_FORM_block4: | |
17483 | bytes += 4 + read_4_bytes (abfd, bytes); | |
17484 | break; | |
17485 | ||
17486 | case DW_FORM_sdata: | |
17487 | case DW_FORM_udata: | |
3019eac3 DE |
17488 | case DW_FORM_GNU_addr_index: |
17489 | case DW_FORM_GNU_str_index: | |
f664829e DE |
17490 | bytes = (gdb_byte *) gdb_skip_leb128 (bytes, buffer_end); |
17491 | if (bytes == NULL) | |
17492 | { | |
17493 | dwarf2_section_buffer_overflow_complaint (section); | |
17494 | return NULL; | |
17495 | } | |
cf2c3c16 TT |
17496 | break; |
17497 | ||
17498 | default: | |
17499 | { | |
17500 | complain: | |
17501 | complaint (&symfile_complaints, | |
17502 | _("invalid form 0x%x in `%s'"), | |
17503 | form, | |
17504 | section->asection->name); | |
17505 | return NULL; | |
17506 | } | |
2e276125 JB |
17507 | } |
17508 | ||
cf2c3c16 TT |
17509 | return bytes; |
17510 | } | |
757a13d0 | 17511 | |
cf2c3c16 TT |
17512 | /* A helper for dwarf_decode_macros that handles skipping an unknown |
17513 | opcode. Returns an updated pointer to the macro data buffer; or, | |
17514 | on error, issues a complaint and returns NULL. */ | |
757a13d0 | 17515 | |
cf2c3c16 TT |
17516 | static gdb_byte * |
17517 | skip_unknown_opcode (unsigned int opcode, | |
17518 | gdb_byte **opcode_definitions, | |
f664829e | 17519 | gdb_byte *mac_ptr, gdb_byte *mac_end, |
cf2c3c16 TT |
17520 | bfd *abfd, |
17521 | unsigned int offset_size, | |
17522 | struct dwarf2_section_info *section) | |
17523 | { | |
17524 | unsigned int bytes_read, i; | |
17525 | unsigned long arg; | |
17526 | gdb_byte *defn; | |
2e276125 | 17527 | |
cf2c3c16 | 17528 | if (opcode_definitions[opcode] == NULL) |
2e276125 | 17529 | { |
cf2c3c16 TT |
17530 | complaint (&symfile_complaints, |
17531 | _("unrecognized DW_MACFINO opcode 0x%x"), | |
17532 | opcode); | |
17533 | return NULL; | |
17534 | } | |
2e276125 | 17535 | |
cf2c3c16 TT |
17536 | defn = opcode_definitions[opcode]; |
17537 | arg = read_unsigned_leb128 (abfd, defn, &bytes_read); | |
17538 | defn += bytes_read; | |
2e276125 | 17539 | |
cf2c3c16 TT |
17540 | for (i = 0; i < arg; ++i) |
17541 | { | |
f664829e DE |
17542 | mac_ptr = skip_form_bytes (abfd, mac_ptr, mac_end, defn[i], offset_size, |
17543 | section); | |
cf2c3c16 TT |
17544 | if (mac_ptr == NULL) |
17545 | { | |
17546 | /* skip_form_bytes already issued the complaint. */ | |
17547 | return NULL; | |
17548 | } | |
17549 | } | |
757a13d0 | 17550 | |
cf2c3c16 TT |
17551 | return mac_ptr; |
17552 | } | |
757a13d0 | 17553 | |
cf2c3c16 TT |
17554 | /* A helper function which parses the header of a macro section. |
17555 | If the macro section is the extended (for now called "GNU") type, | |
17556 | then this updates *OFFSET_SIZE. Returns a pointer to just after | |
17557 | the header, or issues a complaint and returns NULL on error. */ | |
757a13d0 | 17558 | |
cf2c3c16 TT |
17559 | static gdb_byte * |
17560 | dwarf_parse_macro_header (gdb_byte **opcode_definitions, | |
17561 | bfd *abfd, | |
17562 | gdb_byte *mac_ptr, | |
17563 | unsigned int *offset_size, | |
17564 | int section_is_gnu) | |
17565 | { | |
17566 | memset (opcode_definitions, 0, 256 * sizeof (gdb_byte *)); | |
757a13d0 | 17567 | |
cf2c3c16 TT |
17568 | if (section_is_gnu) |
17569 | { | |
17570 | unsigned int version, flags; | |
757a13d0 | 17571 | |
cf2c3c16 TT |
17572 | version = read_2_bytes (abfd, mac_ptr); |
17573 | if (version != 4) | |
17574 | { | |
17575 | complaint (&symfile_complaints, | |
17576 | _("unrecognized version `%d' in .debug_macro section"), | |
17577 | version); | |
17578 | return NULL; | |
17579 | } | |
17580 | mac_ptr += 2; | |
757a13d0 | 17581 | |
cf2c3c16 TT |
17582 | flags = read_1_byte (abfd, mac_ptr); |
17583 | ++mac_ptr; | |
17584 | *offset_size = (flags & 1) ? 8 : 4; | |
757a13d0 | 17585 | |
cf2c3c16 TT |
17586 | if ((flags & 2) != 0) |
17587 | /* We don't need the line table offset. */ | |
17588 | mac_ptr += *offset_size; | |
757a13d0 | 17589 | |
cf2c3c16 TT |
17590 | /* Vendor opcode descriptions. */ |
17591 | if ((flags & 4) != 0) | |
17592 | { | |
17593 | unsigned int i, count; | |
757a13d0 | 17594 | |
cf2c3c16 TT |
17595 | count = read_1_byte (abfd, mac_ptr); |
17596 | ++mac_ptr; | |
17597 | for (i = 0; i < count; ++i) | |
17598 | { | |
17599 | unsigned int opcode, bytes_read; | |
17600 | unsigned long arg; | |
17601 | ||
17602 | opcode = read_1_byte (abfd, mac_ptr); | |
17603 | ++mac_ptr; | |
17604 | opcode_definitions[opcode] = mac_ptr; | |
17605 | arg = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
17606 | mac_ptr += bytes_read; | |
17607 | mac_ptr += arg; | |
17608 | } | |
757a13d0 | 17609 | } |
cf2c3c16 | 17610 | } |
757a13d0 | 17611 | |
cf2c3c16 TT |
17612 | return mac_ptr; |
17613 | } | |
757a13d0 | 17614 | |
cf2c3c16 | 17615 | /* A helper for dwarf_decode_macros that handles the GNU extensions, |
8fc3fc34 | 17616 | including DW_MACRO_GNU_transparent_include. */ |
cf2c3c16 TT |
17617 | |
17618 | static void | |
17619 | dwarf_decode_macro_bytes (bfd *abfd, gdb_byte *mac_ptr, gdb_byte *mac_end, | |
17620 | struct macro_source_file *current_file, | |
17621 | struct line_header *lh, char *comp_dir, | |
17622 | struct dwarf2_section_info *section, | |
36586728 | 17623 | int section_is_gnu, int section_is_dwz, |
cf2c3c16 | 17624 | unsigned int offset_size, |
8fc3fc34 TT |
17625 | struct objfile *objfile, |
17626 | htab_t include_hash) | |
cf2c3c16 TT |
17627 | { |
17628 | enum dwarf_macro_record_type macinfo_type; | |
17629 | int at_commandline; | |
17630 | gdb_byte *opcode_definitions[256]; | |
757a13d0 | 17631 | |
cf2c3c16 TT |
17632 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, |
17633 | &offset_size, section_is_gnu); | |
17634 | if (mac_ptr == NULL) | |
17635 | { | |
17636 | /* We already issued a complaint. */ | |
17637 | return; | |
17638 | } | |
757a13d0 JK |
17639 | |
17640 | /* Determines if GDB is still before first DW_MACINFO_start_file. If true | |
17641 | GDB is still reading the definitions from command line. First | |
17642 | DW_MACINFO_start_file will need to be ignored as it was already executed | |
17643 | to create CURRENT_FILE for the main source holding also the command line | |
17644 | definitions. On first met DW_MACINFO_start_file this flag is reset to | |
17645 | normally execute all the remaining DW_MACINFO_start_file macinfos. */ | |
17646 | ||
17647 | at_commandline = 1; | |
17648 | ||
17649 | do | |
17650 | { | |
17651 | /* Do we at least have room for a macinfo type byte? */ | |
17652 | if (mac_ptr >= mac_end) | |
17653 | { | |
f664829e | 17654 | dwarf2_section_buffer_overflow_complaint (section); |
757a13d0 JK |
17655 | break; |
17656 | } | |
17657 | ||
17658 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
17659 | mac_ptr++; | |
17660 | ||
cf2c3c16 TT |
17661 | /* Note that we rely on the fact that the corresponding GNU and |
17662 | DWARF constants are the same. */ | |
757a13d0 JK |
17663 | switch (macinfo_type) |
17664 | { | |
17665 | /* A zero macinfo type indicates the end of the macro | |
17666 | information. */ | |
17667 | case 0: | |
17668 | break; | |
2e276125 | 17669 | |
cf2c3c16 TT |
17670 | case DW_MACRO_GNU_define: |
17671 | case DW_MACRO_GNU_undef: | |
17672 | case DW_MACRO_GNU_define_indirect: | |
17673 | case DW_MACRO_GNU_undef_indirect: | |
36586728 TT |
17674 | case DW_MACRO_GNU_define_indirect_alt: |
17675 | case DW_MACRO_GNU_undef_indirect_alt: | |
2e276125 | 17676 | { |
891d2f0b | 17677 | unsigned int bytes_read; |
2e276125 JB |
17678 | int line; |
17679 | char *body; | |
cf2c3c16 | 17680 | int is_define; |
2e276125 | 17681 | |
cf2c3c16 TT |
17682 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
17683 | mac_ptr += bytes_read; | |
17684 | ||
17685 | if (macinfo_type == DW_MACRO_GNU_define | |
17686 | || macinfo_type == DW_MACRO_GNU_undef) | |
17687 | { | |
17688 | body = read_direct_string (abfd, mac_ptr, &bytes_read); | |
17689 | mac_ptr += bytes_read; | |
17690 | } | |
17691 | else | |
17692 | { | |
17693 | LONGEST str_offset; | |
17694 | ||
17695 | str_offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
17696 | mac_ptr += offset_size; | |
2e276125 | 17697 | |
36586728 | 17698 | if (macinfo_type == DW_MACRO_GNU_define_indirect_alt |
f7a35f02 TT |
17699 | || macinfo_type == DW_MACRO_GNU_undef_indirect_alt |
17700 | || section_is_dwz) | |
36586728 TT |
17701 | { |
17702 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
17703 | ||
17704 | body = read_indirect_string_from_dwz (dwz, str_offset); | |
17705 | } | |
17706 | else | |
17707 | body = read_indirect_string_at_offset (abfd, str_offset); | |
cf2c3c16 TT |
17708 | } |
17709 | ||
17710 | is_define = (macinfo_type == DW_MACRO_GNU_define | |
36586728 TT |
17711 | || macinfo_type == DW_MACRO_GNU_define_indirect |
17712 | || macinfo_type == DW_MACRO_GNU_define_indirect_alt); | |
2e276125 | 17713 | if (! current_file) |
757a13d0 JK |
17714 | { |
17715 | /* DWARF violation as no main source is present. */ | |
17716 | complaint (&symfile_complaints, | |
17717 | _("debug info with no main source gives macro %s " | |
17718 | "on line %d: %s"), | |
cf2c3c16 TT |
17719 | is_define ? _("definition") : _("undefinition"), |
17720 | line, body); | |
757a13d0 JK |
17721 | break; |
17722 | } | |
3e43a32a MS |
17723 | if ((line == 0 && !at_commandline) |
17724 | || (line != 0 && at_commandline)) | |
4d3c2250 | 17725 | complaint (&symfile_complaints, |
757a13d0 JK |
17726 | _("debug info gives %s macro %s with %s line %d: %s"), |
17727 | at_commandline ? _("command-line") : _("in-file"), | |
cf2c3c16 | 17728 | is_define ? _("definition") : _("undefinition"), |
757a13d0 JK |
17729 | line == 0 ? _("zero") : _("non-zero"), line, body); |
17730 | ||
cf2c3c16 | 17731 | if (is_define) |
757a13d0 | 17732 | parse_macro_definition (current_file, line, body); |
cf2c3c16 TT |
17733 | else |
17734 | { | |
17735 | gdb_assert (macinfo_type == DW_MACRO_GNU_undef | |
36586728 TT |
17736 | || macinfo_type == DW_MACRO_GNU_undef_indirect |
17737 | || macinfo_type == DW_MACRO_GNU_undef_indirect_alt); | |
cf2c3c16 TT |
17738 | macro_undef (current_file, line, body); |
17739 | } | |
2e276125 JB |
17740 | } |
17741 | break; | |
17742 | ||
cf2c3c16 | 17743 | case DW_MACRO_GNU_start_file: |
2e276125 | 17744 | { |
891d2f0b | 17745 | unsigned int bytes_read; |
2e276125 JB |
17746 | int line, file; |
17747 | ||
17748 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
17749 | mac_ptr += bytes_read; | |
17750 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
17751 | mac_ptr += bytes_read; | |
17752 | ||
3e43a32a MS |
17753 | if ((line == 0 && !at_commandline) |
17754 | || (line != 0 && at_commandline)) | |
757a13d0 JK |
17755 | complaint (&symfile_complaints, |
17756 | _("debug info gives source %d included " | |
17757 | "from %s at %s line %d"), | |
17758 | file, at_commandline ? _("command-line") : _("file"), | |
17759 | line == 0 ? _("zero") : _("non-zero"), line); | |
17760 | ||
17761 | if (at_commandline) | |
17762 | { | |
cf2c3c16 TT |
17763 | /* This DW_MACRO_GNU_start_file was executed in the |
17764 | pass one. */ | |
757a13d0 JK |
17765 | at_commandline = 0; |
17766 | } | |
17767 | else | |
17768 | current_file = macro_start_file (file, line, | |
17769 | current_file, comp_dir, | |
cf2c3c16 | 17770 | lh, objfile); |
2e276125 JB |
17771 | } |
17772 | break; | |
17773 | ||
cf2c3c16 | 17774 | case DW_MACRO_GNU_end_file: |
2e276125 | 17775 | if (! current_file) |
4d3c2250 | 17776 | complaint (&symfile_complaints, |
3e43a32a MS |
17777 | _("macro debug info has an unmatched " |
17778 | "`close_file' directive")); | |
2e276125 JB |
17779 | else |
17780 | { | |
17781 | current_file = current_file->included_by; | |
17782 | if (! current_file) | |
17783 | { | |
cf2c3c16 | 17784 | enum dwarf_macro_record_type next_type; |
2e276125 JB |
17785 | |
17786 | /* GCC circa March 2002 doesn't produce the zero | |
17787 | type byte marking the end of the compilation | |
17788 | unit. Complain if it's not there, but exit no | |
17789 | matter what. */ | |
17790 | ||
17791 | /* Do we at least have room for a macinfo type byte? */ | |
17792 | if (mac_ptr >= mac_end) | |
17793 | { | |
f664829e | 17794 | dwarf2_section_buffer_overflow_complaint (section); |
2e276125 JB |
17795 | return; |
17796 | } | |
17797 | ||
17798 | /* We don't increment mac_ptr here, so this is just | |
17799 | a look-ahead. */ | |
17800 | next_type = read_1_byte (abfd, mac_ptr); | |
17801 | if (next_type != 0) | |
4d3c2250 | 17802 | complaint (&symfile_complaints, |
3e43a32a MS |
17803 | _("no terminating 0-type entry for " |
17804 | "macros in `.debug_macinfo' section")); | |
2e276125 JB |
17805 | |
17806 | return; | |
17807 | } | |
17808 | } | |
17809 | break; | |
17810 | ||
cf2c3c16 | 17811 | case DW_MACRO_GNU_transparent_include: |
36586728 | 17812 | case DW_MACRO_GNU_transparent_include_alt: |
cf2c3c16 TT |
17813 | { |
17814 | LONGEST offset; | |
8fc3fc34 | 17815 | void **slot; |
a036ba48 TT |
17816 | bfd *include_bfd = abfd; |
17817 | struct dwarf2_section_info *include_section = section; | |
17818 | struct dwarf2_section_info alt_section; | |
17819 | gdb_byte *include_mac_end = mac_end; | |
17820 | int is_dwz = section_is_dwz; | |
17821 | gdb_byte *new_mac_ptr; | |
cf2c3c16 TT |
17822 | |
17823 | offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
17824 | mac_ptr += offset_size; | |
17825 | ||
a036ba48 TT |
17826 | if (macinfo_type == DW_MACRO_GNU_transparent_include_alt) |
17827 | { | |
17828 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
17829 | ||
17830 | dwarf2_read_section (dwarf2_per_objfile->objfile, | |
17831 | &dwz->macro); | |
17832 | ||
17833 | include_bfd = dwz->macro.asection->owner; | |
17834 | include_section = &dwz->macro; | |
17835 | include_mac_end = dwz->macro.buffer + dwz->macro.size; | |
17836 | is_dwz = 1; | |
17837 | } | |
17838 | ||
17839 | new_mac_ptr = include_section->buffer + offset; | |
17840 | slot = htab_find_slot (include_hash, new_mac_ptr, INSERT); | |
17841 | ||
8fc3fc34 TT |
17842 | if (*slot != NULL) |
17843 | { | |
17844 | /* This has actually happened; see | |
17845 | http://sourceware.org/bugzilla/show_bug.cgi?id=13568. */ | |
17846 | complaint (&symfile_complaints, | |
17847 | _("recursive DW_MACRO_GNU_transparent_include in " | |
17848 | ".debug_macro section")); | |
17849 | } | |
17850 | else | |
17851 | { | |
a036ba48 | 17852 | *slot = new_mac_ptr; |
36586728 | 17853 | |
a036ba48 | 17854 | dwarf_decode_macro_bytes (include_bfd, new_mac_ptr, |
36586728 | 17855 | include_mac_end, current_file, |
8fc3fc34 | 17856 | lh, comp_dir, |
36586728 | 17857 | section, section_is_gnu, is_dwz, |
8fc3fc34 TT |
17858 | offset_size, objfile, include_hash); |
17859 | ||
a036ba48 | 17860 | htab_remove_elt (include_hash, new_mac_ptr); |
8fc3fc34 | 17861 | } |
cf2c3c16 TT |
17862 | } |
17863 | break; | |
17864 | ||
2e276125 | 17865 | case DW_MACINFO_vendor_ext: |
cf2c3c16 TT |
17866 | if (!section_is_gnu) |
17867 | { | |
17868 | unsigned int bytes_read; | |
17869 | int constant; | |
2e276125 | 17870 | |
cf2c3c16 TT |
17871 | constant = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
17872 | mac_ptr += bytes_read; | |
17873 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
17874 | mac_ptr += bytes_read; | |
2e276125 | 17875 | |
cf2c3c16 TT |
17876 | /* We don't recognize any vendor extensions. */ |
17877 | break; | |
17878 | } | |
17879 | /* FALLTHROUGH */ | |
17880 | ||
17881 | default: | |
17882 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 17883 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
17884 | section); |
17885 | if (mac_ptr == NULL) | |
17886 | return; | |
17887 | break; | |
2e276125 | 17888 | } |
757a13d0 | 17889 | } while (macinfo_type != 0); |
2e276125 | 17890 | } |
8e19ed76 | 17891 | |
cf2c3c16 | 17892 | static void |
09262596 DE |
17893 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, |
17894 | char *comp_dir, int section_is_gnu) | |
cf2c3c16 | 17895 | { |
bb5ed363 | 17896 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
09262596 DE |
17897 | struct line_header *lh = cu->line_header; |
17898 | bfd *abfd; | |
cf2c3c16 TT |
17899 | gdb_byte *mac_ptr, *mac_end; |
17900 | struct macro_source_file *current_file = 0; | |
17901 | enum dwarf_macro_record_type macinfo_type; | |
17902 | unsigned int offset_size = cu->header.offset_size; | |
17903 | gdb_byte *opcode_definitions[256]; | |
8fc3fc34 TT |
17904 | struct cleanup *cleanup; |
17905 | htab_t include_hash; | |
17906 | void **slot; | |
09262596 DE |
17907 | struct dwarf2_section_info *section; |
17908 | const char *section_name; | |
17909 | ||
17910 | if (cu->dwo_unit != NULL) | |
17911 | { | |
17912 | if (section_is_gnu) | |
17913 | { | |
17914 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
17915 | section_name = ".debug_macro.dwo"; | |
17916 | } | |
17917 | else | |
17918 | { | |
17919 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
17920 | section_name = ".debug_macinfo.dwo"; | |
17921 | } | |
17922 | } | |
17923 | else | |
17924 | { | |
17925 | if (section_is_gnu) | |
17926 | { | |
17927 | section = &dwarf2_per_objfile->macro; | |
17928 | section_name = ".debug_macro"; | |
17929 | } | |
17930 | else | |
17931 | { | |
17932 | section = &dwarf2_per_objfile->macinfo; | |
17933 | section_name = ".debug_macinfo"; | |
17934 | } | |
17935 | } | |
cf2c3c16 | 17936 | |
bb5ed363 | 17937 | dwarf2_read_section (objfile, section); |
cf2c3c16 TT |
17938 | if (section->buffer == NULL) |
17939 | { | |
fceca515 | 17940 | complaint (&symfile_complaints, _("missing %s section"), section_name); |
cf2c3c16 TT |
17941 | return; |
17942 | } | |
09262596 | 17943 | abfd = section->asection->owner; |
cf2c3c16 TT |
17944 | |
17945 | /* First pass: Find the name of the base filename. | |
17946 | This filename is needed in order to process all macros whose definition | |
17947 | (or undefinition) comes from the command line. These macros are defined | |
17948 | before the first DW_MACINFO_start_file entry, and yet still need to be | |
17949 | associated to the base file. | |
17950 | ||
17951 | To determine the base file name, we scan the macro definitions until we | |
17952 | reach the first DW_MACINFO_start_file entry. We then initialize | |
17953 | CURRENT_FILE accordingly so that any macro definition found before the | |
17954 | first DW_MACINFO_start_file can still be associated to the base file. */ | |
17955 | ||
17956 | mac_ptr = section->buffer + offset; | |
17957 | mac_end = section->buffer + section->size; | |
17958 | ||
17959 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, | |
17960 | &offset_size, section_is_gnu); | |
17961 | if (mac_ptr == NULL) | |
17962 | { | |
17963 | /* We already issued a complaint. */ | |
17964 | return; | |
17965 | } | |
17966 | ||
17967 | do | |
17968 | { | |
17969 | /* Do we at least have room for a macinfo type byte? */ | |
17970 | if (mac_ptr >= mac_end) | |
17971 | { | |
17972 | /* Complaint is printed during the second pass as GDB will probably | |
17973 | stop the first pass earlier upon finding | |
17974 | DW_MACINFO_start_file. */ | |
17975 | break; | |
17976 | } | |
17977 | ||
17978 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
17979 | mac_ptr++; | |
17980 | ||
17981 | /* Note that we rely on the fact that the corresponding GNU and | |
17982 | DWARF constants are the same. */ | |
17983 | switch (macinfo_type) | |
17984 | { | |
17985 | /* A zero macinfo type indicates the end of the macro | |
17986 | information. */ | |
17987 | case 0: | |
17988 | break; | |
17989 | ||
17990 | case DW_MACRO_GNU_define: | |
17991 | case DW_MACRO_GNU_undef: | |
17992 | /* Only skip the data by MAC_PTR. */ | |
17993 | { | |
17994 | unsigned int bytes_read; | |
17995 | ||
17996 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
17997 | mac_ptr += bytes_read; | |
17998 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
17999 | mac_ptr += bytes_read; | |
18000 | } | |
18001 | break; | |
18002 | ||
18003 | case DW_MACRO_GNU_start_file: | |
18004 | { | |
18005 | unsigned int bytes_read; | |
18006 | int line, file; | |
18007 | ||
18008 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
18009 | mac_ptr += bytes_read; | |
18010 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
18011 | mac_ptr += bytes_read; | |
18012 | ||
18013 | current_file = macro_start_file (file, line, current_file, | |
bb5ed363 | 18014 | comp_dir, lh, objfile); |
cf2c3c16 TT |
18015 | } |
18016 | break; | |
18017 | ||
18018 | case DW_MACRO_GNU_end_file: | |
18019 | /* No data to skip by MAC_PTR. */ | |
18020 | break; | |
18021 | ||
18022 | case DW_MACRO_GNU_define_indirect: | |
18023 | case DW_MACRO_GNU_undef_indirect: | |
f7a35f02 TT |
18024 | case DW_MACRO_GNU_define_indirect_alt: |
18025 | case DW_MACRO_GNU_undef_indirect_alt: | |
cf2c3c16 TT |
18026 | { |
18027 | unsigned int bytes_read; | |
18028 | ||
18029 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
18030 | mac_ptr += bytes_read; | |
18031 | mac_ptr += offset_size; | |
18032 | } | |
18033 | break; | |
18034 | ||
18035 | case DW_MACRO_GNU_transparent_include: | |
f7a35f02 | 18036 | case DW_MACRO_GNU_transparent_include_alt: |
cf2c3c16 TT |
18037 | /* Note that, according to the spec, a transparent include |
18038 | chain cannot call DW_MACRO_GNU_start_file. So, we can just | |
18039 | skip this opcode. */ | |
18040 | mac_ptr += offset_size; | |
18041 | break; | |
18042 | ||
18043 | case DW_MACINFO_vendor_ext: | |
18044 | /* Only skip the data by MAC_PTR. */ | |
18045 | if (!section_is_gnu) | |
18046 | { | |
18047 | unsigned int bytes_read; | |
18048 | ||
18049 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
18050 | mac_ptr += bytes_read; | |
18051 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
18052 | mac_ptr += bytes_read; | |
18053 | } | |
18054 | /* FALLTHROUGH */ | |
18055 | ||
18056 | default: | |
18057 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 18058 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
18059 | section); |
18060 | if (mac_ptr == NULL) | |
18061 | return; | |
18062 | break; | |
18063 | } | |
18064 | } while (macinfo_type != 0 && current_file == NULL); | |
18065 | ||
18066 | /* Second pass: Process all entries. | |
18067 | ||
18068 | Use the AT_COMMAND_LINE flag to determine whether we are still processing | |
18069 | command-line macro definitions/undefinitions. This flag is unset when we | |
18070 | reach the first DW_MACINFO_start_file entry. */ | |
18071 | ||
8fc3fc34 TT |
18072 | include_hash = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
18073 | NULL, xcalloc, xfree); | |
18074 | cleanup = make_cleanup_htab_delete (include_hash); | |
18075 | mac_ptr = section->buffer + offset; | |
18076 | slot = htab_find_slot (include_hash, mac_ptr, INSERT); | |
18077 | *slot = mac_ptr; | |
18078 | dwarf_decode_macro_bytes (abfd, mac_ptr, mac_end, | |
36586728 TT |
18079 | current_file, lh, comp_dir, section, |
18080 | section_is_gnu, 0, | |
8fc3fc34 TT |
18081 | offset_size, objfile, include_hash); |
18082 | do_cleanups (cleanup); | |
cf2c3c16 TT |
18083 | } |
18084 | ||
8e19ed76 | 18085 | /* Check if the attribute's form is a DW_FORM_block* |
0963b4bd | 18086 | if so return true else false. */ |
380bca97 | 18087 | |
8e19ed76 PS |
18088 | static int |
18089 | attr_form_is_block (struct attribute *attr) | |
18090 | { | |
18091 | return (attr == NULL ? 0 : | |
18092 | attr->form == DW_FORM_block1 | |
18093 | || attr->form == DW_FORM_block2 | |
18094 | || attr->form == DW_FORM_block4 | |
2dc7f7b3 TT |
18095 | || attr->form == DW_FORM_block |
18096 | || attr->form == DW_FORM_exprloc); | |
8e19ed76 | 18097 | } |
4c2df51b | 18098 | |
c6a0999f JB |
18099 | /* Return non-zero if ATTR's value is a section offset --- classes |
18100 | lineptr, loclistptr, macptr or rangelistptr --- or zero, otherwise. | |
18101 | You may use DW_UNSND (attr) to retrieve such offsets. | |
18102 | ||
18103 | Section 7.5.4, "Attribute Encodings", explains that no attribute | |
18104 | may have a value that belongs to more than one of these classes; it | |
18105 | would be ambiguous if we did, because we use the same forms for all | |
18106 | of them. */ | |
380bca97 | 18107 | |
3690dd37 JB |
18108 | static int |
18109 | attr_form_is_section_offset (struct attribute *attr) | |
18110 | { | |
18111 | return (attr->form == DW_FORM_data4 | |
2dc7f7b3 TT |
18112 | || attr->form == DW_FORM_data8 |
18113 | || attr->form == DW_FORM_sec_offset); | |
3690dd37 JB |
18114 | } |
18115 | ||
3690dd37 JB |
18116 | /* Return non-zero if ATTR's value falls in the 'constant' class, or |
18117 | zero otherwise. When this function returns true, you can apply | |
18118 | dwarf2_get_attr_constant_value to it. | |
18119 | ||
18120 | However, note that for some attributes you must check | |
18121 | attr_form_is_section_offset before using this test. DW_FORM_data4 | |
18122 | and DW_FORM_data8 are members of both the constant class, and of | |
18123 | the classes that contain offsets into other debug sections | |
18124 | (lineptr, loclistptr, macptr or rangelistptr). The DWARF spec says | |
18125 | that, if an attribute's can be either a constant or one of the | |
18126 | section offset classes, DW_FORM_data4 and DW_FORM_data8 should be | |
18127 | taken as section offsets, not constants. */ | |
380bca97 | 18128 | |
3690dd37 JB |
18129 | static int |
18130 | attr_form_is_constant (struct attribute *attr) | |
18131 | { | |
18132 | switch (attr->form) | |
18133 | { | |
18134 | case DW_FORM_sdata: | |
18135 | case DW_FORM_udata: | |
18136 | case DW_FORM_data1: | |
18137 | case DW_FORM_data2: | |
18138 | case DW_FORM_data4: | |
18139 | case DW_FORM_data8: | |
18140 | return 1; | |
18141 | default: | |
18142 | return 0; | |
18143 | } | |
18144 | } | |
18145 | ||
3019eac3 DE |
18146 | /* Return the .debug_loc section to use for CU. |
18147 | For DWO files use .debug_loc.dwo. */ | |
18148 | ||
18149 | static struct dwarf2_section_info * | |
18150 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
18151 | { | |
18152 | if (cu->dwo_unit) | |
18153 | return &cu->dwo_unit->dwo_file->sections.loc; | |
18154 | return &dwarf2_per_objfile->loc; | |
18155 | } | |
18156 | ||
8cf6f0b1 TT |
18157 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
18158 | ||
18159 | static void | |
18160 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
18161 | struct dwarf2_loclist_baton *baton, | |
18162 | struct attribute *attr) | |
18163 | { | |
3019eac3 DE |
18164 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
18165 | ||
18166 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
8cf6f0b1 TT |
18167 | |
18168 | baton->per_cu = cu->per_cu; | |
18169 | gdb_assert (baton->per_cu); | |
18170 | /* We don't know how long the location list is, but make sure we | |
18171 | don't run off the edge of the section. */ | |
3019eac3 DE |
18172 | baton->size = section->size - DW_UNSND (attr); |
18173 | baton->data = section->buffer + DW_UNSND (attr); | |
8cf6f0b1 | 18174 | baton->base_address = cu->base_address; |
f664829e | 18175 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
18176 | } |
18177 | ||
4c2df51b DJ |
18178 | static void |
18179 | dwarf2_symbol_mark_computed (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 18180 | struct dwarf2_cu *cu) |
4c2df51b | 18181 | { |
bb5ed363 | 18182 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 | 18183 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 18184 | |
3690dd37 | 18185 | if (attr_form_is_section_offset (attr) |
3019eac3 | 18186 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
18187 | the section. If so, fall through to the complaint in the |
18188 | other branch. */ | |
3019eac3 | 18189 | && DW_UNSND (attr) < dwarf2_section_size (objfile, section)) |
4c2df51b | 18190 | { |
0d53c4c4 | 18191 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 18192 | |
bb5ed363 | 18193 | baton = obstack_alloc (&objfile->objfile_obstack, |
0d53c4c4 | 18194 | sizeof (struct dwarf2_loclist_baton)); |
4c2df51b | 18195 | |
8cf6f0b1 | 18196 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 18197 | |
d00adf39 | 18198 | if (cu->base_known == 0) |
0d53c4c4 | 18199 | complaint (&symfile_complaints, |
3e43a32a MS |
18200 | _("Location list used without " |
18201 | "specifying the CU base address.")); | |
4c2df51b | 18202 | |
768a979c | 18203 | SYMBOL_COMPUTED_OPS (sym) = &dwarf2_loclist_funcs; |
0d53c4c4 DJ |
18204 | SYMBOL_LOCATION_BATON (sym) = baton; |
18205 | } | |
18206 | else | |
18207 | { | |
18208 | struct dwarf2_locexpr_baton *baton; | |
18209 | ||
bb5ed363 | 18210 | baton = obstack_alloc (&objfile->objfile_obstack, |
0d53c4c4 | 18211 | sizeof (struct dwarf2_locexpr_baton)); |
ae0d2f24 UW |
18212 | baton->per_cu = cu->per_cu; |
18213 | gdb_assert (baton->per_cu); | |
0d53c4c4 DJ |
18214 | |
18215 | if (attr_form_is_block (attr)) | |
18216 | { | |
18217 | /* Note that we're just copying the block's data pointer | |
18218 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
18219 | info_buffer for SYM's objfile; right now we never release |
18220 | that buffer, but when we do clean up properly this may | |
18221 | need to change. */ | |
0d53c4c4 DJ |
18222 | baton->size = DW_BLOCK (attr)->size; |
18223 | baton->data = DW_BLOCK (attr)->data; | |
18224 | } | |
18225 | else | |
18226 | { | |
18227 | dwarf2_invalid_attrib_class_complaint ("location description", | |
18228 | SYMBOL_NATURAL_NAME (sym)); | |
18229 | baton->size = 0; | |
0d53c4c4 | 18230 | } |
6e70227d | 18231 | |
768a979c | 18232 | SYMBOL_COMPUTED_OPS (sym) = &dwarf2_locexpr_funcs; |
0d53c4c4 DJ |
18233 | SYMBOL_LOCATION_BATON (sym) = baton; |
18234 | } | |
4c2df51b | 18235 | } |
6502dd73 | 18236 | |
9aa1f1e3 TT |
18237 | /* Return the OBJFILE associated with the compilation unit CU. If CU |
18238 | came from a separate debuginfo file, then the master objfile is | |
18239 | returned. */ | |
ae0d2f24 UW |
18240 | |
18241 | struct objfile * | |
18242 | dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *per_cu) | |
18243 | { | |
9291a0cd | 18244 | struct objfile *objfile = per_cu->objfile; |
ae0d2f24 UW |
18245 | |
18246 | /* Return the master objfile, so that we can report and look up the | |
18247 | correct file containing this variable. */ | |
18248 | if (objfile->separate_debug_objfile_backlink) | |
18249 | objfile = objfile->separate_debug_objfile_backlink; | |
18250 | ||
18251 | return objfile; | |
18252 | } | |
18253 | ||
96408a79 SA |
18254 | /* Return comp_unit_head for PER_CU, either already available in PER_CU->CU |
18255 | (CU_HEADERP is unused in such case) or prepare a temporary copy at | |
18256 | CU_HEADERP first. */ | |
18257 | ||
18258 | static const struct comp_unit_head * | |
18259 | per_cu_header_read_in (struct comp_unit_head *cu_headerp, | |
18260 | struct dwarf2_per_cu_data *per_cu) | |
18261 | { | |
96408a79 SA |
18262 | gdb_byte *info_ptr; |
18263 | ||
18264 | if (per_cu->cu) | |
18265 | return &per_cu->cu->header; | |
18266 | ||
0bc3a05c | 18267 | info_ptr = per_cu->info_or_types_section->buffer + per_cu->offset.sect_off; |
96408a79 SA |
18268 | |
18269 | memset (cu_headerp, 0, sizeof (*cu_headerp)); | |
0bc3a05c | 18270 | read_comp_unit_head (cu_headerp, info_ptr, per_cu->objfile->obfd); |
96408a79 SA |
18271 | |
18272 | return cu_headerp; | |
18273 | } | |
18274 | ||
ae0d2f24 UW |
18275 | /* Return the address size given in the compilation unit header for CU. */ |
18276 | ||
98714339 | 18277 | int |
ae0d2f24 UW |
18278 | dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *per_cu) |
18279 | { | |
96408a79 SA |
18280 | struct comp_unit_head cu_header_local; |
18281 | const struct comp_unit_head *cu_headerp; | |
c471e790 | 18282 | |
96408a79 SA |
18283 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
18284 | ||
18285 | return cu_headerp->addr_size; | |
ae0d2f24 UW |
18286 | } |
18287 | ||
9eae7c52 TT |
18288 | /* Return the offset size given in the compilation unit header for CU. */ |
18289 | ||
18290 | int | |
18291 | dwarf2_per_cu_offset_size (struct dwarf2_per_cu_data *per_cu) | |
18292 | { | |
96408a79 SA |
18293 | struct comp_unit_head cu_header_local; |
18294 | const struct comp_unit_head *cu_headerp; | |
9c6c53f7 | 18295 | |
96408a79 SA |
18296 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
18297 | ||
18298 | return cu_headerp->offset_size; | |
18299 | } | |
18300 | ||
18301 | /* See its dwarf2loc.h declaration. */ | |
18302 | ||
18303 | int | |
18304 | dwarf2_per_cu_ref_addr_size (struct dwarf2_per_cu_data *per_cu) | |
18305 | { | |
18306 | struct comp_unit_head cu_header_local; | |
18307 | const struct comp_unit_head *cu_headerp; | |
18308 | ||
18309 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); | |
18310 | ||
18311 | if (cu_headerp->version == 2) | |
18312 | return cu_headerp->addr_size; | |
18313 | else | |
18314 | return cu_headerp->offset_size; | |
181cebd4 JK |
18315 | } |
18316 | ||
9aa1f1e3 TT |
18317 | /* Return the text offset of the CU. The returned offset comes from |
18318 | this CU's objfile. If this objfile came from a separate debuginfo | |
18319 | file, then the offset may be different from the corresponding | |
18320 | offset in the parent objfile. */ | |
18321 | ||
18322 | CORE_ADDR | |
18323 | dwarf2_per_cu_text_offset (struct dwarf2_per_cu_data *per_cu) | |
18324 | { | |
bb3fa9d0 | 18325 | struct objfile *objfile = per_cu->objfile; |
9aa1f1e3 TT |
18326 | |
18327 | return ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
18328 | } | |
18329 | ||
348e048f DE |
18330 | /* Locate the .debug_info compilation unit from CU's objfile which contains |
18331 | the DIE at OFFSET. Raises an error on failure. */ | |
ae038cb0 DJ |
18332 | |
18333 | static struct dwarf2_per_cu_data * | |
b64f50a1 | 18334 | dwarf2_find_containing_comp_unit (sect_offset offset, |
36586728 | 18335 | unsigned int offset_in_dwz, |
ae038cb0 DJ |
18336 | struct objfile *objfile) |
18337 | { | |
18338 | struct dwarf2_per_cu_data *this_cu; | |
18339 | int low, high; | |
36586728 | 18340 | const sect_offset *cu_off; |
ae038cb0 | 18341 | |
ae038cb0 DJ |
18342 | low = 0; |
18343 | high = dwarf2_per_objfile->n_comp_units - 1; | |
18344 | while (high > low) | |
18345 | { | |
36586728 | 18346 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 18347 | int mid = low + (high - low) / 2; |
9a619af0 | 18348 | |
36586728 TT |
18349 | mid_cu = dwarf2_per_objfile->all_comp_units[mid]; |
18350 | cu_off = &mid_cu->offset; | |
18351 | if (mid_cu->is_dwz > offset_in_dwz | |
18352 | || (mid_cu->is_dwz == offset_in_dwz | |
18353 | && cu_off->sect_off >= offset.sect_off)) | |
ae038cb0 DJ |
18354 | high = mid; |
18355 | else | |
18356 | low = mid + 1; | |
18357 | } | |
18358 | gdb_assert (low == high); | |
36586728 TT |
18359 | this_cu = dwarf2_per_objfile->all_comp_units[low]; |
18360 | cu_off = &this_cu->offset; | |
18361 | if (this_cu->is_dwz != offset_in_dwz || cu_off->sect_off > offset.sect_off) | |
ae038cb0 | 18362 | { |
36586728 | 18363 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 AC |
18364 | error (_("Dwarf Error: could not find partial DIE containing " |
18365 | "offset 0x%lx [in module %s]"), | |
b64f50a1 | 18366 | (long) offset.sect_off, bfd_get_filename (objfile->obfd)); |
10b3939b | 18367 | |
b64f50a1 JK |
18368 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->offset.sect_off |
18369 | <= offset.sect_off); | |
ae038cb0 DJ |
18370 | return dwarf2_per_objfile->all_comp_units[low-1]; |
18371 | } | |
18372 | else | |
18373 | { | |
18374 | this_cu = dwarf2_per_objfile->all_comp_units[low]; | |
18375 | if (low == dwarf2_per_objfile->n_comp_units - 1 | |
b64f50a1 JK |
18376 | && offset.sect_off >= this_cu->offset.sect_off + this_cu->length) |
18377 | error (_("invalid dwarf2 offset %u"), offset.sect_off); | |
18378 | gdb_assert (offset.sect_off < this_cu->offset.sect_off + this_cu->length); | |
ae038cb0 DJ |
18379 | return this_cu; |
18380 | } | |
18381 | } | |
18382 | ||
23745b47 | 18383 | /* Initialize dwarf2_cu CU, owned by PER_CU. */ |
93311388 | 18384 | |
9816fde3 | 18385 | static void |
23745b47 | 18386 | init_one_comp_unit (struct dwarf2_cu *cu, struct dwarf2_per_cu_data *per_cu) |
93311388 | 18387 | { |
9816fde3 | 18388 | memset (cu, 0, sizeof (*cu)); |
23745b47 DE |
18389 | per_cu->cu = cu; |
18390 | cu->per_cu = per_cu; | |
18391 | cu->objfile = per_cu->objfile; | |
93311388 | 18392 | obstack_init (&cu->comp_unit_obstack); |
9816fde3 JK |
18393 | } |
18394 | ||
18395 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
18396 | ||
18397 | static void | |
95554aad TT |
18398 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
18399 | enum language pretend_language) | |
9816fde3 JK |
18400 | { |
18401 | struct attribute *attr; | |
18402 | ||
18403 | /* Set the language we're debugging. */ | |
18404 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
18405 | if (attr) | |
18406 | set_cu_language (DW_UNSND (attr), cu); | |
18407 | else | |
9cded63f | 18408 | { |
95554aad | 18409 | cu->language = pretend_language; |
9cded63f TT |
18410 | cu->language_defn = language_def (cu->language); |
18411 | } | |
dee91e82 DE |
18412 | |
18413 | attr = dwarf2_attr (comp_unit_die, DW_AT_producer, cu); | |
18414 | if (attr) | |
18415 | cu->producer = DW_STRING (attr); | |
93311388 DE |
18416 | } |
18417 | ||
ae038cb0 DJ |
18418 | /* Release one cached compilation unit, CU. We unlink it from the tree |
18419 | of compilation units, but we don't remove it from the read_in_chain; | |
93311388 DE |
18420 | the caller is responsible for that. |
18421 | NOTE: DATA is a void * because this function is also used as a | |
18422 | cleanup routine. */ | |
ae038cb0 DJ |
18423 | |
18424 | static void | |
68dc6402 | 18425 | free_heap_comp_unit (void *data) |
ae038cb0 DJ |
18426 | { |
18427 | struct dwarf2_cu *cu = data; | |
18428 | ||
23745b47 DE |
18429 | gdb_assert (cu->per_cu != NULL); |
18430 | cu->per_cu->cu = NULL; | |
ae038cb0 DJ |
18431 | cu->per_cu = NULL; |
18432 | ||
18433 | obstack_free (&cu->comp_unit_obstack, NULL); | |
18434 | ||
18435 | xfree (cu); | |
18436 | } | |
18437 | ||
72bf9492 | 18438 | /* This cleanup function is passed the address of a dwarf2_cu on the stack |
ae038cb0 | 18439 | when we're finished with it. We can't free the pointer itself, but be |
dee91e82 | 18440 | sure to unlink it from the cache. Also release any associated storage. */ |
72bf9492 DJ |
18441 | |
18442 | static void | |
18443 | free_stack_comp_unit (void *data) | |
18444 | { | |
18445 | struct dwarf2_cu *cu = data; | |
18446 | ||
23745b47 DE |
18447 | gdb_assert (cu->per_cu != NULL); |
18448 | cu->per_cu->cu = NULL; | |
18449 | cu->per_cu = NULL; | |
18450 | ||
72bf9492 DJ |
18451 | obstack_free (&cu->comp_unit_obstack, NULL); |
18452 | cu->partial_dies = NULL; | |
ae038cb0 DJ |
18453 | } |
18454 | ||
18455 | /* Free all cached compilation units. */ | |
18456 | ||
18457 | static void | |
18458 | free_cached_comp_units (void *data) | |
18459 | { | |
18460 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
18461 | ||
18462 | per_cu = dwarf2_per_objfile->read_in_chain; | |
18463 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
18464 | while (per_cu != NULL) | |
18465 | { | |
18466 | struct dwarf2_per_cu_data *next_cu; | |
18467 | ||
18468 | next_cu = per_cu->cu->read_in_chain; | |
18469 | ||
68dc6402 | 18470 | free_heap_comp_unit (per_cu->cu); |
ae038cb0 DJ |
18471 | *last_chain = next_cu; |
18472 | ||
18473 | per_cu = next_cu; | |
18474 | } | |
18475 | } | |
18476 | ||
18477 | /* Increase the age counter on each cached compilation unit, and free | |
18478 | any that are too old. */ | |
18479 | ||
18480 | static void | |
18481 | age_cached_comp_units (void) | |
18482 | { | |
18483 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
18484 | ||
18485 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
18486 | per_cu = dwarf2_per_objfile->read_in_chain; | |
18487 | while (per_cu != NULL) | |
18488 | { | |
18489 | per_cu->cu->last_used ++; | |
18490 | if (per_cu->cu->last_used <= dwarf2_max_cache_age) | |
18491 | dwarf2_mark (per_cu->cu); | |
18492 | per_cu = per_cu->cu->read_in_chain; | |
18493 | } | |
18494 | ||
18495 | per_cu = dwarf2_per_objfile->read_in_chain; | |
18496 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
18497 | while (per_cu != NULL) | |
18498 | { | |
18499 | struct dwarf2_per_cu_data *next_cu; | |
18500 | ||
18501 | next_cu = per_cu->cu->read_in_chain; | |
18502 | ||
18503 | if (!per_cu->cu->mark) | |
18504 | { | |
68dc6402 | 18505 | free_heap_comp_unit (per_cu->cu); |
ae038cb0 DJ |
18506 | *last_chain = next_cu; |
18507 | } | |
18508 | else | |
18509 | last_chain = &per_cu->cu->read_in_chain; | |
18510 | ||
18511 | per_cu = next_cu; | |
18512 | } | |
18513 | } | |
18514 | ||
18515 | /* Remove a single compilation unit from the cache. */ | |
18516 | ||
18517 | static void | |
dee91e82 | 18518 | free_one_cached_comp_unit (struct dwarf2_per_cu_data *target_per_cu) |
ae038cb0 DJ |
18519 | { |
18520 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
18521 | ||
18522 | per_cu = dwarf2_per_objfile->read_in_chain; | |
18523 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
18524 | while (per_cu != NULL) | |
18525 | { | |
18526 | struct dwarf2_per_cu_data *next_cu; | |
18527 | ||
18528 | next_cu = per_cu->cu->read_in_chain; | |
18529 | ||
dee91e82 | 18530 | if (per_cu == target_per_cu) |
ae038cb0 | 18531 | { |
68dc6402 | 18532 | free_heap_comp_unit (per_cu->cu); |
dee91e82 | 18533 | per_cu->cu = NULL; |
ae038cb0 DJ |
18534 | *last_chain = next_cu; |
18535 | break; | |
18536 | } | |
18537 | else | |
18538 | last_chain = &per_cu->cu->read_in_chain; | |
18539 | ||
18540 | per_cu = next_cu; | |
18541 | } | |
18542 | } | |
18543 | ||
fe3e1990 DJ |
18544 | /* Release all extra memory associated with OBJFILE. */ |
18545 | ||
18546 | void | |
18547 | dwarf2_free_objfile (struct objfile *objfile) | |
18548 | { | |
18549 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
18550 | ||
18551 | if (dwarf2_per_objfile == NULL) | |
18552 | return; | |
18553 | ||
18554 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
18555 | free_cached_comp_units (NULL); | |
18556 | ||
7b9f3c50 DE |
18557 | if (dwarf2_per_objfile->quick_file_names_table) |
18558 | htab_delete (dwarf2_per_objfile->quick_file_names_table); | |
9291a0cd | 18559 | |
fe3e1990 DJ |
18560 | /* Everything else should be on the objfile obstack. */ |
18561 | } | |
18562 | ||
dee91e82 DE |
18563 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
18564 | We store these in a hash table separate from the DIEs, and preserve them | |
18565 | when the DIEs are flushed out of cache. | |
18566 | ||
18567 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 DE |
18568 | uniquely identify the type. A file may have multiple .debug_types sections, |
18569 | or the type may come from a DWO file. We have to use something in | |
18570 | dwarf2_per_cu_data (or the pointer to it) because we can enter the lookup | |
18571 | routine, get_die_type_at_offset, from outside this file, and thus won't | |
18572 | necessarily have PER_CU->cu. Fortunately, PER_CU is stable for the life | |
18573 | of the objfile. */ | |
1c379e20 | 18574 | |
dee91e82 | 18575 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 18576 | { |
dee91e82 | 18577 | const struct dwarf2_per_cu_data *per_cu; |
b64f50a1 | 18578 | sect_offset offset; |
1c379e20 DJ |
18579 | struct type *type; |
18580 | }; | |
18581 | ||
dee91e82 | 18582 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
18583 | |
18584 | static hashval_t | |
dee91e82 | 18585 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 18586 | { |
dee91e82 | 18587 | const struct dwarf2_per_cu_offset_and_type *ofs = item; |
9a619af0 | 18588 | |
dee91e82 | 18589 | return (uintptr_t) ofs->per_cu + ofs->offset.sect_off; |
1c379e20 DJ |
18590 | } |
18591 | ||
dee91e82 | 18592 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
18593 | |
18594 | static int | |
dee91e82 | 18595 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 18596 | { |
dee91e82 DE |
18597 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs = item_lhs; |
18598 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs = item_rhs; | |
9a619af0 | 18599 | |
dee91e82 DE |
18600 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
18601 | && ofs_lhs->offset.sect_off == ofs_rhs->offset.sect_off); | |
1c379e20 DJ |
18602 | } |
18603 | ||
18604 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
18605 | table if necessary. For convenience, return TYPE. |
18606 | ||
18607 | The DIEs reading must have careful ordering to: | |
18608 | * Not cause infite loops trying to read in DIEs as a prerequisite for | |
18609 | reading current DIE. | |
18610 | * Not trying to dereference contents of still incompletely read in types | |
18611 | while reading in other DIEs. | |
18612 | * Enable referencing still incompletely read in types just by a pointer to | |
18613 | the type without accessing its fields. | |
18614 | ||
18615 | Therefore caller should follow these rules: | |
18616 | * Try to fetch any prerequisite types we may need to build this DIE type | |
18617 | before building the type and calling set_die_type. | |
e71ec853 | 18618 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
18619 | possible before fetching more types to complete the current type. |
18620 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 18621 | |
f792889a | 18622 | static struct type * |
1c379e20 DJ |
18623 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
18624 | { | |
dee91e82 | 18625 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
673bfd45 | 18626 | struct objfile *objfile = cu->objfile; |
1c379e20 | 18627 | |
b4ba55a1 JB |
18628 | /* For Ada types, make sure that the gnat-specific data is always |
18629 | initialized (if not already set). There are a few types where | |
18630 | we should not be doing so, because the type-specific area is | |
18631 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
18632 | where the type-specific area is used to store the floatformat). | |
18633 | But this is not a problem, because the gnat-specific information | |
18634 | is actually not needed for these types. */ | |
18635 | if (need_gnat_info (cu) | |
18636 | && TYPE_CODE (type) != TYPE_CODE_FUNC | |
18637 | && TYPE_CODE (type) != TYPE_CODE_FLT | |
18638 | && !HAVE_GNAT_AUX_INFO (type)) | |
18639 | INIT_GNAT_SPECIFIC (type); | |
18640 | ||
dee91e82 | 18641 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 18642 | { |
dee91e82 DE |
18643 | dwarf2_per_objfile->die_type_hash = |
18644 | htab_create_alloc_ex (127, | |
18645 | per_cu_offset_and_type_hash, | |
18646 | per_cu_offset_and_type_eq, | |
18647 | NULL, | |
18648 | &objfile->objfile_obstack, | |
18649 | hashtab_obstack_allocate, | |
18650 | dummy_obstack_deallocate); | |
f792889a | 18651 | } |
1c379e20 | 18652 | |
dee91e82 | 18653 | ofs.per_cu = cu->per_cu; |
1c379e20 DJ |
18654 | ofs.offset = die->offset; |
18655 | ofs.type = type; | |
dee91e82 DE |
18656 | slot = (struct dwarf2_per_cu_offset_and_type **) |
18657 | htab_find_slot (dwarf2_per_objfile->die_type_hash, &ofs, INSERT); | |
7e314c57 JK |
18658 | if (*slot) |
18659 | complaint (&symfile_complaints, | |
18660 | _("A problem internal to GDB: DIE 0x%x has type already set"), | |
b64f50a1 | 18661 | die->offset.sect_off); |
673bfd45 | 18662 | *slot = obstack_alloc (&objfile->objfile_obstack, sizeof (**slot)); |
1c379e20 | 18663 | **slot = ofs; |
f792889a | 18664 | return type; |
1c379e20 DJ |
18665 | } |
18666 | ||
380bca97 | 18667 | /* Look up the type for the die at OFFSET in the appropriate type_hash |
673bfd45 | 18668 | table, or return NULL if the die does not have a saved type. */ |
1c379e20 DJ |
18669 | |
18670 | static struct type * | |
b64f50a1 | 18671 | get_die_type_at_offset (sect_offset offset, |
673bfd45 | 18672 | struct dwarf2_per_cu_data *per_cu) |
1c379e20 | 18673 | { |
dee91e82 | 18674 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
f792889a | 18675 | |
dee91e82 | 18676 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 18677 | return NULL; |
1c379e20 | 18678 | |
dee91e82 | 18679 | ofs.per_cu = per_cu; |
673bfd45 | 18680 | ofs.offset = offset; |
dee91e82 | 18681 | slot = htab_find (dwarf2_per_objfile->die_type_hash, &ofs); |
1c379e20 DJ |
18682 | if (slot) |
18683 | return slot->type; | |
18684 | else | |
18685 | return NULL; | |
18686 | } | |
18687 | ||
673bfd45 DE |
18688 | /* Look up the type for DIE in the appropriate type_hash table, |
18689 | or return NULL if DIE does not have a saved type. */ | |
18690 | ||
18691 | static struct type * | |
18692 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
18693 | { | |
18694 | return get_die_type_at_offset (die->offset, cu->per_cu); | |
18695 | } | |
18696 | ||
10b3939b DJ |
18697 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
18698 | ||
18699 | static void | |
18700 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
18701 | struct dwarf2_per_cu_data *ref_per_cu) | |
18702 | { | |
18703 | void **slot; | |
18704 | ||
18705 | if (cu->dependencies == NULL) | |
18706 | cu->dependencies | |
18707 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
18708 | NULL, &cu->comp_unit_obstack, | |
18709 | hashtab_obstack_allocate, | |
18710 | dummy_obstack_deallocate); | |
18711 | ||
18712 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
18713 | if (*slot == NULL) | |
18714 | *slot = ref_per_cu; | |
18715 | } | |
1c379e20 | 18716 | |
f504f079 DE |
18717 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
18718 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
18719 | cache that we must keep because we are keeping CU. */ |
18720 | ||
10b3939b DJ |
18721 | static int |
18722 | dwarf2_mark_helper (void **slot, void *data) | |
18723 | { | |
18724 | struct dwarf2_per_cu_data *per_cu; | |
18725 | ||
18726 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
d07ed419 JK |
18727 | |
18728 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
18729 | reading of the chain. As such dependencies remain valid it is not much | |
18730 | useful to track and undo them during QUIT cleanups. */ | |
18731 | if (per_cu->cu == NULL) | |
18732 | return 1; | |
18733 | ||
10b3939b DJ |
18734 | if (per_cu->cu->mark) |
18735 | return 1; | |
18736 | per_cu->cu->mark = 1; | |
18737 | ||
18738 | if (per_cu->cu->dependencies != NULL) | |
18739 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
18740 | ||
18741 | return 1; | |
18742 | } | |
18743 | ||
f504f079 DE |
18744 | /* Set the mark field in CU and in every other compilation unit in the |
18745 | cache that we must keep because we are keeping CU. */ | |
18746 | ||
ae038cb0 DJ |
18747 | static void |
18748 | dwarf2_mark (struct dwarf2_cu *cu) | |
18749 | { | |
18750 | if (cu->mark) | |
18751 | return; | |
18752 | cu->mark = 1; | |
10b3939b DJ |
18753 | if (cu->dependencies != NULL) |
18754 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
18755 | } |
18756 | ||
18757 | static void | |
18758 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
18759 | { | |
18760 | while (per_cu) | |
18761 | { | |
18762 | per_cu->cu->mark = 0; | |
18763 | per_cu = per_cu->cu->read_in_chain; | |
18764 | } | |
72bf9492 DJ |
18765 | } |
18766 | ||
72bf9492 DJ |
18767 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
18768 | is its offset in .debug_info for this objfile. */ | |
18769 | ||
18770 | static hashval_t | |
18771 | partial_die_hash (const void *item) | |
18772 | { | |
18773 | const struct partial_die_info *part_die = item; | |
9a619af0 | 18774 | |
b64f50a1 | 18775 | return part_die->offset.sect_off; |
72bf9492 DJ |
18776 | } |
18777 | ||
18778 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
18779 | are equal if they have the same offset. */ | |
18780 | ||
18781 | static int | |
18782 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
18783 | { | |
18784 | const struct partial_die_info *part_die_lhs = item_lhs; | |
18785 | const struct partial_die_info *part_die_rhs = item_rhs; | |
9a619af0 | 18786 | |
b64f50a1 | 18787 | return part_die_lhs->offset.sect_off == part_die_rhs->offset.sect_off; |
72bf9492 DJ |
18788 | } |
18789 | ||
ae038cb0 DJ |
18790 | static struct cmd_list_element *set_dwarf2_cmdlist; |
18791 | static struct cmd_list_element *show_dwarf2_cmdlist; | |
18792 | ||
18793 | static void | |
18794 | set_dwarf2_cmd (char *args, int from_tty) | |
18795 | { | |
18796 | help_list (set_dwarf2_cmdlist, "maintenance set dwarf2 ", -1, gdb_stdout); | |
18797 | } | |
18798 | ||
18799 | static void | |
18800 | show_dwarf2_cmd (char *args, int from_tty) | |
6e70227d | 18801 | { |
ae038cb0 DJ |
18802 | cmd_show_list (show_dwarf2_cmdlist, from_tty, ""); |
18803 | } | |
18804 | ||
4bf44c1c | 18805 | /* Free data associated with OBJFILE, if necessary. */ |
dce234bc PP |
18806 | |
18807 | static void | |
c1bd65d0 | 18808 | dwarf2_per_objfile_free (struct objfile *objfile, void *d) |
dce234bc PP |
18809 | { |
18810 | struct dwarf2_per_objfile *data = d; | |
8b70b953 | 18811 | int ix; |
8b70b953 | 18812 | |
95554aad TT |
18813 | for (ix = 0; ix < dwarf2_per_objfile->n_comp_units; ++ix) |
18814 | VEC_free (dwarf2_per_cu_ptr, | |
f4dc4d17 | 18815 | dwarf2_per_objfile->all_comp_units[ix]->s.imported_symtabs); |
95554aad | 18816 | |
8b70b953 | 18817 | VEC_free (dwarf2_section_info_def, data->types); |
3019eac3 DE |
18818 | |
18819 | if (data->dwo_files) | |
18820 | free_dwo_files (data->dwo_files, objfile); | |
36586728 TT |
18821 | |
18822 | if (data->dwz_file && data->dwz_file->dwz_bfd) | |
18823 | gdb_bfd_unref (data->dwz_file->dwz_bfd); | |
9291a0cd TT |
18824 | } |
18825 | ||
18826 | \f | |
ae2de4f8 | 18827 | /* The "save gdb-index" command. */ |
9291a0cd TT |
18828 | |
18829 | /* The contents of the hash table we create when building the string | |
18830 | table. */ | |
18831 | struct strtab_entry | |
18832 | { | |
18833 | offset_type offset; | |
18834 | const char *str; | |
18835 | }; | |
18836 | ||
559a7a62 JK |
18837 | /* Hash function for a strtab_entry. |
18838 | ||
18839 | Function is used only during write_hash_table so no index format backward | |
18840 | compatibility is needed. */ | |
b89be57b | 18841 | |
9291a0cd TT |
18842 | static hashval_t |
18843 | hash_strtab_entry (const void *e) | |
18844 | { | |
18845 | const struct strtab_entry *entry = e; | |
559a7a62 | 18846 | return mapped_index_string_hash (INT_MAX, entry->str); |
9291a0cd TT |
18847 | } |
18848 | ||
18849 | /* Equality function for a strtab_entry. */ | |
b89be57b | 18850 | |
9291a0cd TT |
18851 | static int |
18852 | eq_strtab_entry (const void *a, const void *b) | |
18853 | { | |
18854 | const struct strtab_entry *ea = a; | |
18855 | const struct strtab_entry *eb = b; | |
18856 | return !strcmp (ea->str, eb->str); | |
18857 | } | |
18858 | ||
18859 | /* Create a strtab_entry hash table. */ | |
b89be57b | 18860 | |
9291a0cd TT |
18861 | static htab_t |
18862 | create_strtab (void) | |
18863 | { | |
18864 | return htab_create_alloc (100, hash_strtab_entry, eq_strtab_entry, | |
18865 | xfree, xcalloc, xfree); | |
18866 | } | |
18867 | ||
18868 | /* Add a string to the constant pool. Return the string's offset in | |
18869 | host order. */ | |
b89be57b | 18870 | |
9291a0cd TT |
18871 | static offset_type |
18872 | add_string (htab_t table, struct obstack *cpool, const char *str) | |
18873 | { | |
18874 | void **slot; | |
18875 | struct strtab_entry entry; | |
18876 | struct strtab_entry *result; | |
18877 | ||
18878 | entry.str = str; | |
18879 | slot = htab_find_slot (table, &entry, INSERT); | |
18880 | if (*slot) | |
18881 | result = *slot; | |
18882 | else | |
18883 | { | |
18884 | result = XNEW (struct strtab_entry); | |
18885 | result->offset = obstack_object_size (cpool); | |
18886 | result->str = str; | |
18887 | obstack_grow_str0 (cpool, str); | |
18888 | *slot = result; | |
18889 | } | |
18890 | return result->offset; | |
18891 | } | |
18892 | ||
18893 | /* An entry in the symbol table. */ | |
18894 | struct symtab_index_entry | |
18895 | { | |
18896 | /* The name of the symbol. */ | |
18897 | const char *name; | |
18898 | /* The offset of the name in the constant pool. */ | |
18899 | offset_type index_offset; | |
18900 | /* A sorted vector of the indices of all the CUs that hold an object | |
18901 | of this name. */ | |
18902 | VEC (offset_type) *cu_indices; | |
18903 | }; | |
18904 | ||
18905 | /* The symbol table. This is a power-of-2-sized hash table. */ | |
18906 | struct mapped_symtab | |
18907 | { | |
18908 | offset_type n_elements; | |
18909 | offset_type size; | |
18910 | struct symtab_index_entry **data; | |
18911 | }; | |
18912 | ||
18913 | /* Hash function for a symtab_index_entry. */ | |
b89be57b | 18914 | |
9291a0cd TT |
18915 | static hashval_t |
18916 | hash_symtab_entry (const void *e) | |
18917 | { | |
18918 | const struct symtab_index_entry *entry = e; | |
18919 | return iterative_hash (VEC_address (offset_type, entry->cu_indices), | |
18920 | sizeof (offset_type) * VEC_length (offset_type, | |
18921 | entry->cu_indices), | |
18922 | 0); | |
18923 | } | |
18924 | ||
18925 | /* Equality function for a symtab_index_entry. */ | |
b89be57b | 18926 | |
9291a0cd TT |
18927 | static int |
18928 | eq_symtab_entry (const void *a, const void *b) | |
18929 | { | |
18930 | const struct symtab_index_entry *ea = a; | |
18931 | const struct symtab_index_entry *eb = b; | |
18932 | int len = VEC_length (offset_type, ea->cu_indices); | |
18933 | if (len != VEC_length (offset_type, eb->cu_indices)) | |
18934 | return 0; | |
18935 | return !memcmp (VEC_address (offset_type, ea->cu_indices), | |
18936 | VEC_address (offset_type, eb->cu_indices), | |
18937 | sizeof (offset_type) * len); | |
18938 | } | |
18939 | ||
18940 | /* Destroy a symtab_index_entry. */ | |
b89be57b | 18941 | |
9291a0cd TT |
18942 | static void |
18943 | delete_symtab_entry (void *p) | |
18944 | { | |
18945 | struct symtab_index_entry *entry = p; | |
18946 | VEC_free (offset_type, entry->cu_indices); | |
18947 | xfree (entry); | |
18948 | } | |
18949 | ||
18950 | /* Create a hash table holding symtab_index_entry objects. */ | |
b89be57b | 18951 | |
9291a0cd | 18952 | static htab_t |
3876f04e | 18953 | create_symbol_hash_table (void) |
9291a0cd TT |
18954 | { |
18955 | return htab_create_alloc (100, hash_symtab_entry, eq_symtab_entry, | |
18956 | delete_symtab_entry, xcalloc, xfree); | |
18957 | } | |
18958 | ||
18959 | /* Create a new mapped symtab object. */ | |
b89be57b | 18960 | |
9291a0cd TT |
18961 | static struct mapped_symtab * |
18962 | create_mapped_symtab (void) | |
18963 | { | |
18964 | struct mapped_symtab *symtab = XNEW (struct mapped_symtab); | |
18965 | symtab->n_elements = 0; | |
18966 | symtab->size = 1024; | |
18967 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
18968 | return symtab; | |
18969 | } | |
18970 | ||
18971 | /* Destroy a mapped_symtab. */ | |
b89be57b | 18972 | |
9291a0cd TT |
18973 | static void |
18974 | cleanup_mapped_symtab (void *p) | |
18975 | { | |
18976 | struct mapped_symtab *symtab = p; | |
18977 | /* The contents of the array are freed when the other hash table is | |
18978 | destroyed. */ | |
18979 | xfree (symtab->data); | |
18980 | xfree (symtab); | |
18981 | } | |
18982 | ||
18983 | /* Find a slot in SYMTAB for the symbol NAME. Returns a pointer to | |
559a7a62 JK |
18984 | the slot. |
18985 | ||
18986 | Function is used only during write_hash_table so no index format backward | |
18987 | compatibility is needed. */ | |
b89be57b | 18988 | |
9291a0cd TT |
18989 | static struct symtab_index_entry ** |
18990 | find_slot (struct mapped_symtab *symtab, const char *name) | |
18991 | { | |
559a7a62 | 18992 | offset_type index, step, hash = mapped_index_string_hash (INT_MAX, name); |
9291a0cd TT |
18993 | |
18994 | index = hash & (symtab->size - 1); | |
18995 | step = ((hash * 17) & (symtab->size - 1)) | 1; | |
18996 | ||
18997 | for (;;) | |
18998 | { | |
18999 | if (!symtab->data[index] || !strcmp (name, symtab->data[index]->name)) | |
19000 | return &symtab->data[index]; | |
19001 | index = (index + step) & (symtab->size - 1); | |
19002 | } | |
19003 | } | |
19004 | ||
19005 | /* Expand SYMTAB's hash table. */ | |
b89be57b | 19006 | |
9291a0cd TT |
19007 | static void |
19008 | hash_expand (struct mapped_symtab *symtab) | |
19009 | { | |
19010 | offset_type old_size = symtab->size; | |
19011 | offset_type i; | |
19012 | struct symtab_index_entry **old_entries = symtab->data; | |
19013 | ||
19014 | symtab->size *= 2; | |
19015 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
19016 | ||
19017 | for (i = 0; i < old_size; ++i) | |
19018 | { | |
19019 | if (old_entries[i]) | |
19020 | { | |
19021 | struct symtab_index_entry **slot = find_slot (symtab, | |
19022 | old_entries[i]->name); | |
19023 | *slot = old_entries[i]; | |
19024 | } | |
19025 | } | |
19026 | ||
19027 | xfree (old_entries); | |
19028 | } | |
19029 | ||
156942c7 DE |
19030 | /* Add an entry to SYMTAB. NAME is the name of the symbol. |
19031 | CU_INDEX is the index of the CU in which the symbol appears. | |
19032 | IS_STATIC is one if the symbol is static, otherwise zero (global). */ | |
b89be57b | 19033 | |
9291a0cd TT |
19034 | static void |
19035 | add_index_entry (struct mapped_symtab *symtab, const char *name, | |
156942c7 | 19036 | int is_static, gdb_index_symbol_kind kind, |
9291a0cd TT |
19037 | offset_type cu_index) |
19038 | { | |
19039 | struct symtab_index_entry **slot; | |
156942c7 | 19040 | offset_type cu_index_and_attrs; |
9291a0cd TT |
19041 | |
19042 | ++symtab->n_elements; | |
19043 | if (4 * symtab->n_elements / 3 >= symtab->size) | |
19044 | hash_expand (symtab); | |
19045 | ||
19046 | slot = find_slot (symtab, name); | |
19047 | if (!*slot) | |
19048 | { | |
19049 | *slot = XNEW (struct symtab_index_entry); | |
19050 | (*slot)->name = name; | |
156942c7 | 19051 | /* index_offset is set later. */ |
9291a0cd TT |
19052 | (*slot)->cu_indices = NULL; |
19053 | } | |
156942c7 DE |
19054 | |
19055 | cu_index_and_attrs = 0; | |
19056 | DW2_GDB_INDEX_CU_SET_VALUE (cu_index_and_attrs, cu_index); | |
19057 | DW2_GDB_INDEX_SYMBOL_STATIC_SET_VALUE (cu_index_and_attrs, is_static); | |
19058 | DW2_GDB_INDEX_SYMBOL_KIND_SET_VALUE (cu_index_and_attrs, kind); | |
19059 | ||
19060 | /* We don't want to record an index value twice as we want to avoid the | |
19061 | duplication. | |
19062 | We process all global symbols and then all static symbols | |
19063 | (which would allow us to avoid the duplication by only having to check | |
19064 | the last entry pushed), but a symbol could have multiple kinds in one CU. | |
19065 | To keep things simple we don't worry about the duplication here and | |
19066 | sort and uniqufy the list after we've processed all symbols. */ | |
19067 | VEC_safe_push (offset_type, (*slot)->cu_indices, cu_index_and_attrs); | |
19068 | } | |
19069 | ||
19070 | /* qsort helper routine for uniquify_cu_indices. */ | |
19071 | ||
19072 | static int | |
19073 | offset_type_compare (const void *ap, const void *bp) | |
19074 | { | |
19075 | offset_type a = *(offset_type *) ap; | |
19076 | offset_type b = *(offset_type *) bp; | |
19077 | ||
19078 | return (a > b) - (b > a); | |
19079 | } | |
19080 | ||
19081 | /* Sort and remove duplicates of all symbols' cu_indices lists. */ | |
19082 | ||
19083 | static void | |
19084 | uniquify_cu_indices (struct mapped_symtab *symtab) | |
19085 | { | |
19086 | int i; | |
19087 | ||
19088 | for (i = 0; i < symtab->size; ++i) | |
19089 | { | |
19090 | struct symtab_index_entry *entry = symtab->data[i]; | |
19091 | ||
19092 | if (entry | |
19093 | && entry->cu_indices != NULL) | |
19094 | { | |
19095 | unsigned int next_to_insert, next_to_check; | |
19096 | offset_type last_value; | |
19097 | ||
19098 | qsort (VEC_address (offset_type, entry->cu_indices), | |
19099 | VEC_length (offset_type, entry->cu_indices), | |
19100 | sizeof (offset_type), offset_type_compare); | |
19101 | ||
19102 | last_value = VEC_index (offset_type, entry->cu_indices, 0); | |
19103 | next_to_insert = 1; | |
19104 | for (next_to_check = 1; | |
19105 | next_to_check < VEC_length (offset_type, entry->cu_indices); | |
19106 | ++next_to_check) | |
19107 | { | |
19108 | if (VEC_index (offset_type, entry->cu_indices, next_to_check) | |
19109 | != last_value) | |
19110 | { | |
19111 | last_value = VEC_index (offset_type, entry->cu_indices, | |
19112 | next_to_check); | |
19113 | VEC_replace (offset_type, entry->cu_indices, next_to_insert, | |
19114 | last_value); | |
19115 | ++next_to_insert; | |
19116 | } | |
19117 | } | |
19118 | VEC_truncate (offset_type, entry->cu_indices, next_to_insert); | |
19119 | } | |
19120 | } | |
9291a0cd TT |
19121 | } |
19122 | ||
19123 | /* Add a vector of indices to the constant pool. */ | |
b89be57b | 19124 | |
9291a0cd | 19125 | static offset_type |
3876f04e | 19126 | add_indices_to_cpool (htab_t symbol_hash_table, struct obstack *cpool, |
9291a0cd TT |
19127 | struct symtab_index_entry *entry) |
19128 | { | |
19129 | void **slot; | |
19130 | ||
3876f04e | 19131 | slot = htab_find_slot (symbol_hash_table, entry, INSERT); |
9291a0cd TT |
19132 | if (!*slot) |
19133 | { | |
19134 | offset_type len = VEC_length (offset_type, entry->cu_indices); | |
19135 | offset_type val = MAYBE_SWAP (len); | |
19136 | offset_type iter; | |
19137 | int i; | |
19138 | ||
19139 | *slot = entry; | |
19140 | entry->index_offset = obstack_object_size (cpool); | |
19141 | ||
19142 | obstack_grow (cpool, &val, sizeof (val)); | |
19143 | for (i = 0; | |
19144 | VEC_iterate (offset_type, entry->cu_indices, i, iter); | |
19145 | ++i) | |
19146 | { | |
19147 | val = MAYBE_SWAP (iter); | |
19148 | obstack_grow (cpool, &val, sizeof (val)); | |
19149 | } | |
19150 | } | |
19151 | else | |
19152 | { | |
19153 | struct symtab_index_entry *old_entry = *slot; | |
19154 | entry->index_offset = old_entry->index_offset; | |
19155 | entry = old_entry; | |
19156 | } | |
19157 | return entry->index_offset; | |
19158 | } | |
19159 | ||
19160 | /* Write the mapped hash table SYMTAB to the obstack OUTPUT, with | |
19161 | constant pool entries going into the obstack CPOOL. */ | |
b89be57b | 19162 | |
9291a0cd TT |
19163 | static void |
19164 | write_hash_table (struct mapped_symtab *symtab, | |
19165 | struct obstack *output, struct obstack *cpool) | |
19166 | { | |
19167 | offset_type i; | |
3876f04e | 19168 | htab_t symbol_hash_table; |
9291a0cd TT |
19169 | htab_t str_table; |
19170 | ||
3876f04e | 19171 | symbol_hash_table = create_symbol_hash_table (); |
9291a0cd | 19172 | str_table = create_strtab (); |
3876f04e | 19173 | |
9291a0cd TT |
19174 | /* We add all the index vectors to the constant pool first, to |
19175 | ensure alignment is ok. */ | |
19176 | for (i = 0; i < symtab->size; ++i) | |
19177 | { | |
19178 | if (symtab->data[i]) | |
3876f04e | 19179 | add_indices_to_cpool (symbol_hash_table, cpool, symtab->data[i]); |
9291a0cd TT |
19180 | } |
19181 | ||
19182 | /* Now write out the hash table. */ | |
19183 | for (i = 0; i < symtab->size; ++i) | |
19184 | { | |
19185 | offset_type str_off, vec_off; | |
19186 | ||
19187 | if (symtab->data[i]) | |
19188 | { | |
19189 | str_off = add_string (str_table, cpool, symtab->data[i]->name); | |
19190 | vec_off = symtab->data[i]->index_offset; | |
19191 | } | |
19192 | else | |
19193 | { | |
19194 | /* While 0 is a valid constant pool index, it is not valid | |
19195 | to have 0 for both offsets. */ | |
19196 | str_off = 0; | |
19197 | vec_off = 0; | |
19198 | } | |
19199 | ||
19200 | str_off = MAYBE_SWAP (str_off); | |
19201 | vec_off = MAYBE_SWAP (vec_off); | |
19202 | ||
19203 | obstack_grow (output, &str_off, sizeof (str_off)); | |
19204 | obstack_grow (output, &vec_off, sizeof (vec_off)); | |
19205 | } | |
19206 | ||
19207 | htab_delete (str_table); | |
3876f04e | 19208 | htab_delete (symbol_hash_table); |
9291a0cd TT |
19209 | } |
19210 | ||
0a5429f6 DE |
19211 | /* Struct to map psymtab to CU index in the index file. */ |
19212 | struct psymtab_cu_index_map | |
19213 | { | |
19214 | struct partial_symtab *psymtab; | |
19215 | unsigned int cu_index; | |
19216 | }; | |
19217 | ||
19218 | static hashval_t | |
19219 | hash_psymtab_cu_index (const void *item) | |
19220 | { | |
19221 | const struct psymtab_cu_index_map *map = item; | |
19222 | ||
19223 | return htab_hash_pointer (map->psymtab); | |
19224 | } | |
19225 | ||
19226 | static int | |
19227 | eq_psymtab_cu_index (const void *item_lhs, const void *item_rhs) | |
19228 | { | |
19229 | const struct psymtab_cu_index_map *lhs = item_lhs; | |
19230 | const struct psymtab_cu_index_map *rhs = item_rhs; | |
19231 | ||
19232 | return lhs->psymtab == rhs->psymtab; | |
19233 | } | |
19234 | ||
19235 | /* Helper struct for building the address table. */ | |
19236 | struct addrmap_index_data | |
19237 | { | |
19238 | struct objfile *objfile; | |
19239 | struct obstack *addr_obstack; | |
19240 | htab_t cu_index_htab; | |
19241 | ||
19242 | /* Non-zero if the previous_* fields are valid. | |
19243 | We can't write an entry until we see the next entry (since it is only then | |
19244 | that we know the end of the entry). */ | |
19245 | int previous_valid; | |
19246 | /* Index of the CU in the table of all CUs in the index file. */ | |
19247 | unsigned int previous_cu_index; | |
0963b4bd | 19248 | /* Start address of the CU. */ |
0a5429f6 DE |
19249 | CORE_ADDR previous_cu_start; |
19250 | }; | |
19251 | ||
19252 | /* Write an address entry to OBSTACK. */ | |
b89be57b | 19253 | |
9291a0cd | 19254 | static void |
0a5429f6 DE |
19255 | add_address_entry (struct objfile *objfile, struct obstack *obstack, |
19256 | CORE_ADDR start, CORE_ADDR end, unsigned int cu_index) | |
9291a0cd | 19257 | { |
0a5429f6 | 19258 | offset_type cu_index_to_write; |
9291a0cd TT |
19259 | char addr[8]; |
19260 | CORE_ADDR baseaddr; | |
19261 | ||
19262 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
19263 | ||
0a5429f6 DE |
19264 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, start - baseaddr); |
19265 | obstack_grow (obstack, addr, 8); | |
19266 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, end - baseaddr); | |
19267 | obstack_grow (obstack, addr, 8); | |
19268 | cu_index_to_write = MAYBE_SWAP (cu_index); | |
19269 | obstack_grow (obstack, &cu_index_to_write, sizeof (offset_type)); | |
19270 | } | |
19271 | ||
19272 | /* Worker function for traversing an addrmap to build the address table. */ | |
19273 | ||
19274 | static int | |
19275 | add_address_entry_worker (void *datap, CORE_ADDR start_addr, void *obj) | |
19276 | { | |
19277 | struct addrmap_index_data *data = datap; | |
19278 | struct partial_symtab *pst = obj; | |
0a5429f6 DE |
19279 | |
19280 | if (data->previous_valid) | |
19281 | add_address_entry (data->objfile, data->addr_obstack, | |
19282 | data->previous_cu_start, start_addr, | |
19283 | data->previous_cu_index); | |
19284 | ||
19285 | data->previous_cu_start = start_addr; | |
19286 | if (pst != NULL) | |
19287 | { | |
19288 | struct psymtab_cu_index_map find_map, *map; | |
19289 | find_map.psymtab = pst; | |
19290 | map = htab_find (data->cu_index_htab, &find_map); | |
19291 | gdb_assert (map != NULL); | |
19292 | data->previous_cu_index = map->cu_index; | |
19293 | data->previous_valid = 1; | |
19294 | } | |
19295 | else | |
19296 | data->previous_valid = 0; | |
19297 | ||
19298 | return 0; | |
19299 | } | |
19300 | ||
19301 | /* Write OBJFILE's address map to OBSTACK. | |
19302 | CU_INDEX_HTAB is used to map addrmap entries to their CU indices | |
19303 | in the index file. */ | |
19304 | ||
19305 | static void | |
19306 | write_address_map (struct objfile *objfile, struct obstack *obstack, | |
19307 | htab_t cu_index_htab) | |
19308 | { | |
19309 | struct addrmap_index_data addrmap_index_data; | |
19310 | ||
19311 | /* When writing the address table, we have to cope with the fact that | |
19312 | the addrmap iterator only provides the start of a region; we have to | |
19313 | wait until the next invocation to get the start of the next region. */ | |
19314 | ||
19315 | addrmap_index_data.objfile = objfile; | |
19316 | addrmap_index_data.addr_obstack = obstack; | |
19317 | addrmap_index_data.cu_index_htab = cu_index_htab; | |
19318 | addrmap_index_data.previous_valid = 0; | |
19319 | ||
19320 | addrmap_foreach (objfile->psymtabs_addrmap, add_address_entry_worker, | |
19321 | &addrmap_index_data); | |
19322 | ||
19323 | /* It's highly unlikely the last entry (end address = 0xff...ff) | |
19324 | is valid, but we should still handle it. | |
19325 | The end address is recorded as the start of the next region, but that | |
19326 | doesn't work here. To cope we pass 0xff...ff, this is a rare situation | |
19327 | anyway. */ | |
19328 | if (addrmap_index_data.previous_valid) | |
19329 | add_address_entry (objfile, obstack, | |
19330 | addrmap_index_data.previous_cu_start, (CORE_ADDR) -1, | |
19331 | addrmap_index_data.previous_cu_index); | |
9291a0cd TT |
19332 | } |
19333 | ||
156942c7 DE |
19334 | /* Return the symbol kind of PSYM. */ |
19335 | ||
19336 | static gdb_index_symbol_kind | |
19337 | symbol_kind (struct partial_symbol *psym) | |
19338 | { | |
19339 | domain_enum domain = PSYMBOL_DOMAIN (psym); | |
19340 | enum address_class aclass = PSYMBOL_CLASS (psym); | |
19341 | ||
19342 | switch (domain) | |
19343 | { | |
19344 | case VAR_DOMAIN: | |
19345 | switch (aclass) | |
19346 | { | |
19347 | case LOC_BLOCK: | |
19348 | return GDB_INDEX_SYMBOL_KIND_FUNCTION; | |
19349 | case LOC_TYPEDEF: | |
19350 | return GDB_INDEX_SYMBOL_KIND_TYPE; | |
19351 | case LOC_COMPUTED: | |
19352 | case LOC_CONST_BYTES: | |
19353 | case LOC_OPTIMIZED_OUT: | |
19354 | case LOC_STATIC: | |
19355 | return GDB_INDEX_SYMBOL_KIND_VARIABLE; | |
19356 | case LOC_CONST: | |
19357 | /* Note: It's currently impossible to recognize psyms as enum values | |
19358 | short of reading the type info. For now punt. */ | |
19359 | return GDB_INDEX_SYMBOL_KIND_VARIABLE; | |
19360 | default: | |
19361 | /* There are other LOC_FOO values that one might want to classify | |
19362 | as variables, but dwarf2read.c doesn't currently use them. */ | |
19363 | return GDB_INDEX_SYMBOL_KIND_OTHER; | |
19364 | } | |
19365 | case STRUCT_DOMAIN: | |
19366 | return GDB_INDEX_SYMBOL_KIND_TYPE; | |
19367 | default: | |
19368 | return GDB_INDEX_SYMBOL_KIND_OTHER; | |
19369 | } | |
19370 | } | |
19371 | ||
9291a0cd | 19372 | /* Add a list of partial symbols to SYMTAB. */ |
b89be57b | 19373 | |
9291a0cd TT |
19374 | static void |
19375 | write_psymbols (struct mapped_symtab *symtab, | |
987d643c | 19376 | htab_t psyms_seen, |
9291a0cd TT |
19377 | struct partial_symbol **psymp, |
19378 | int count, | |
987d643c TT |
19379 | offset_type cu_index, |
19380 | int is_static) | |
9291a0cd TT |
19381 | { |
19382 | for (; count-- > 0; ++psymp) | |
19383 | { | |
156942c7 DE |
19384 | struct partial_symbol *psym = *psymp; |
19385 | void **slot; | |
987d643c | 19386 | |
156942c7 | 19387 | if (SYMBOL_LANGUAGE (psym) == language_ada) |
9291a0cd | 19388 | error (_("Ada is not currently supported by the index")); |
987d643c | 19389 | |
987d643c | 19390 | /* Only add a given psymbol once. */ |
156942c7 | 19391 | slot = htab_find_slot (psyms_seen, psym, INSERT); |
987d643c TT |
19392 | if (!*slot) |
19393 | { | |
156942c7 DE |
19394 | gdb_index_symbol_kind kind = symbol_kind (psym); |
19395 | ||
19396 | *slot = psym; | |
19397 | add_index_entry (symtab, SYMBOL_SEARCH_NAME (psym), | |
19398 | is_static, kind, cu_index); | |
987d643c | 19399 | } |
9291a0cd TT |
19400 | } |
19401 | } | |
19402 | ||
19403 | /* Write the contents of an ("unfinished") obstack to FILE. Throw an | |
19404 | exception if there is an error. */ | |
b89be57b | 19405 | |
9291a0cd TT |
19406 | static void |
19407 | write_obstack (FILE *file, struct obstack *obstack) | |
19408 | { | |
19409 | if (fwrite (obstack_base (obstack), 1, obstack_object_size (obstack), | |
19410 | file) | |
19411 | != obstack_object_size (obstack)) | |
19412 | error (_("couldn't data write to file")); | |
19413 | } | |
19414 | ||
19415 | /* Unlink a file if the argument is not NULL. */ | |
b89be57b | 19416 | |
9291a0cd TT |
19417 | static void |
19418 | unlink_if_set (void *p) | |
19419 | { | |
19420 | char **filename = p; | |
19421 | if (*filename) | |
19422 | unlink (*filename); | |
19423 | } | |
19424 | ||
1fd400ff TT |
19425 | /* A helper struct used when iterating over debug_types. */ |
19426 | struct signatured_type_index_data | |
19427 | { | |
19428 | struct objfile *objfile; | |
19429 | struct mapped_symtab *symtab; | |
19430 | struct obstack *types_list; | |
987d643c | 19431 | htab_t psyms_seen; |
1fd400ff TT |
19432 | int cu_index; |
19433 | }; | |
19434 | ||
19435 | /* A helper function that writes a single signatured_type to an | |
19436 | obstack. */ | |
b89be57b | 19437 | |
1fd400ff TT |
19438 | static int |
19439 | write_one_signatured_type (void **slot, void *d) | |
19440 | { | |
19441 | struct signatured_type_index_data *info = d; | |
19442 | struct signatured_type *entry = (struct signatured_type *) *slot; | |
e254ef6a DE |
19443 | struct dwarf2_per_cu_data *per_cu = &entry->per_cu; |
19444 | struct partial_symtab *psymtab = per_cu->v.psymtab; | |
1fd400ff TT |
19445 | gdb_byte val[8]; |
19446 | ||
19447 | write_psymbols (info->symtab, | |
987d643c | 19448 | info->psyms_seen, |
3e43a32a MS |
19449 | info->objfile->global_psymbols.list |
19450 | + psymtab->globals_offset, | |
987d643c TT |
19451 | psymtab->n_global_syms, info->cu_index, |
19452 | 0); | |
1fd400ff | 19453 | write_psymbols (info->symtab, |
987d643c | 19454 | info->psyms_seen, |
3e43a32a MS |
19455 | info->objfile->static_psymbols.list |
19456 | + psymtab->statics_offset, | |
987d643c TT |
19457 | psymtab->n_static_syms, info->cu_index, |
19458 | 1); | |
1fd400ff | 19459 | |
b64f50a1 JK |
19460 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
19461 | entry->per_cu.offset.sect_off); | |
1fd400ff | 19462 | obstack_grow (info->types_list, val, 8); |
3019eac3 DE |
19463 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
19464 | entry->type_offset_in_tu.cu_off); | |
1fd400ff TT |
19465 | obstack_grow (info->types_list, val, 8); |
19466 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, entry->signature); | |
19467 | obstack_grow (info->types_list, val, 8); | |
19468 | ||
19469 | ++info->cu_index; | |
19470 | ||
19471 | return 1; | |
19472 | } | |
19473 | ||
95554aad TT |
19474 | /* Recurse into all "included" dependencies and write their symbols as |
19475 | if they appeared in this psymtab. */ | |
19476 | ||
19477 | static void | |
19478 | recursively_write_psymbols (struct objfile *objfile, | |
19479 | struct partial_symtab *psymtab, | |
19480 | struct mapped_symtab *symtab, | |
19481 | htab_t psyms_seen, | |
19482 | offset_type cu_index) | |
19483 | { | |
19484 | int i; | |
19485 | ||
19486 | for (i = 0; i < psymtab->number_of_dependencies; ++i) | |
19487 | if (psymtab->dependencies[i]->user != NULL) | |
19488 | recursively_write_psymbols (objfile, psymtab->dependencies[i], | |
19489 | symtab, psyms_seen, cu_index); | |
19490 | ||
19491 | write_psymbols (symtab, | |
19492 | psyms_seen, | |
19493 | objfile->global_psymbols.list + psymtab->globals_offset, | |
19494 | psymtab->n_global_syms, cu_index, | |
19495 | 0); | |
19496 | write_psymbols (symtab, | |
19497 | psyms_seen, | |
19498 | objfile->static_psymbols.list + psymtab->statics_offset, | |
19499 | psymtab->n_static_syms, cu_index, | |
19500 | 1); | |
19501 | } | |
19502 | ||
9291a0cd | 19503 | /* Create an index file for OBJFILE in the directory DIR. */ |
b89be57b | 19504 | |
9291a0cd TT |
19505 | static void |
19506 | write_psymtabs_to_index (struct objfile *objfile, const char *dir) | |
19507 | { | |
19508 | struct cleanup *cleanup; | |
19509 | char *filename, *cleanup_filename; | |
1fd400ff TT |
19510 | struct obstack contents, addr_obstack, constant_pool, symtab_obstack; |
19511 | struct obstack cu_list, types_cu_list; | |
9291a0cd TT |
19512 | int i; |
19513 | FILE *out_file; | |
19514 | struct mapped_symtab *symtab; | |
19515 | offset_type val, size_of_contents, total_len; | |
19516 | struct stat st; | |
987d643c | 19517 | htab_t psyms_seen; |
0a5429f6 DE |
19518 | htab_t cu_index_htab; |
19519 | struct psymtab_cu_index_map *psymtab_cu_index_map; | |
9291a0cd | 19520 | |
b4f2f049 | 19521 | if (!objfile->psymtabs || !objfile->psymtabs_addrmap) |
9291a0cd | 19522 | return; |
b4f2f049 | 19523 | |
9291a0cd TT |
19524 | if (dwarf2_per_objfile->using_index) |
19525 | error (_("Cannot use an index to create the index")); | |
19526 | ||
8b70b953 TT |
19527 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) > 1) |
19528 | error (_("Cannot make an index when the file has multiple .debug_types sections")); | |
19529 | ||
9291a0cd | 19530 | if (stat (objfile->name, &st) < 0) |
7e17e088 | 19531 | perror_with_name (objfile->name); |
9291a0cd TT |
19532 | |
19533 | filename = concat (dir, SLASH_STRING, lbasename (objfile->name), | |
19534 | INDEX_SUFFIX, (char *) NULL); | |
19535 | cleanup = make_cleanup (xfree, filename); | |
19536 | ||
19537 | out_file = fopen (filename, "wb"); | |
19538 | if (!out_file) | |
19539 | error (_("Can't open `%s' for writing"), filename); | |
19540 | ||
19541 | cleanup_filename = filename; | |
19542 | make_cleanup (unlink_if_set, &cleanup_filename); | |
19543 | ||
19544 | symtab = create_mapped_symtab (); | |
19545 | make_cleanup (cleanup_mapped_symtab, symtab); | |
19546 | ||
19547 | obstack_init (&addr_obstack); | |
19548 | make_cleanup_obstack_free (&addr_obstack); | |
19549 | ||
19550 | obstack_init (&cu_list); | |
19551 | make_cleanup_obstack_free (&cu_list); | |
19552 | ||
1fd400ff TT |
19553 | obstack_init (&types_cu_list); |
19554 | make_cleanup_obstack_free (&types_cu_list); | |
19555 | ||
987d643c TT |
19556 | psyms_seen = htab_create_alloc (100, htab_hash_pointer, htab_eq_pointer, |
19557 | NULL, xcalloc, xfree); | |
96408a79 | 19558 | make_cleanup_htab_delete (psyms_seen); |
987d643c | 19559 | |
0a5429f6 DE |
19560 | /* While we're scanning CU's create a table that maps a psymtab pointer |
19561 | (which is what addrmap records) to its index (which is what is recorded | |
19562 | in the index file). This will later be needed to write the address | |
19563 | table. */ | |
19564 | cu_index_htab = htab_create_alloc (100, | |
19565 | hash_psymtab_cu_index, | |
19566 | eq_psymtab_cu_index, | |
19567 | NULL, xcalloc, xfree); | |
96408a79 | 19568 | make_cleanup_htab_delete (cu_index_htab); |
0a5429f6 DE |
19569 | psymtab_cu_index_map = (struct psymtab_cu_index_map *) |
19570 | xmalloc (sizeof (struct psymtab_cu_index_map) | |
19571 | * dwarf2_per_objfile->n_comp_units); | |
19572 | make_cleanup (xfree, psymtab_cu_index_map); | |
19573 | ||
19574 | /* The CU list is already sorted, so we don't need to do additional | |
1fd400ff TT |
19575 | work here. Also, the debug_types entries do not appear in |
19576 | all_comp_units, but only in their own hash table. */ | |
9291a0cd TT |
19577 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
19578 | { | |
3e43a32a MS |
19579 | struct dwarf2_per_cu_data *per_cu |
19580 | = dwarf2_per_objfile->all_comp_units[i]; | |
e254ef6a | 19581 | struct partial_symtab *psymtab = per_cu->v.psymtab; |
9291a0cd | 19582 | gdb_byte val[8]; |
0a5429f6 DE |
19583 | struct psymtab_cu_index_map *map; |
19584 | void **slot; | |
9291a0cd | 19585 | |
95554aad TT |
19586 | if (psymtab->user == NULL) |
19587 | recursively_write_psymbols (objfile, psymtab, symtab, psyms_seen, i); | |
9291a0cd | 19588 | |
0a5429f6 DE |
19589 | map = &psymtab_cu_index_map[i]; |
19590 | map->psymtab = psymtab; | |
19591 | map->cu_index = i; | |
19592 | slot = htab_find_slot (cu_index_htab, map, INSERT); | |
19593 | gdb_assert (slot != NULL); | |
19594 | gdb_assert (*slot == NULL); | |
19595 | *slot = map; | |
9291a0cd | 19596 | |
b64f50a1 JK |
19597 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
19598 | per_cu->offset.sect_off); | |
9291a0cd | 19599 | obstack_grow (&cu_list, val, 8); |
e254ef6a | 19600 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, per_cu->length); |
9291a0cd TT |
19601 | obstack_grow (&cu_list, val, 8); |
19602 | } | |
19603 | ||
0a5429f6 DE |
19604 | /* Dump the address map. */ |
19605 | write_address_map (objfile, &addr_obstack, cu_index_htab); | |
19606 | ||
1fd400ff TT |
19607 | /* Write out the .debug_type entries, if any. */ |
19608 | if (dwarf2_per_objfile->signatured_types) | |
19609 | { | |
19610 | struct signatured_type_index_data sig_data; | |
19611 | ||
19612 | sig_data.objfile = objfile; | |
19613 | sig_data.symtab = symtab; | |
19614 | sig_data.types_list = &types_cu_list; | |
987d643c | 19615 | sig_data.psyms_seen = psyms_seen; |
1fd400ff TT |
19616 | sig_data.cu_index = dwarf2_per_objfile->n_comp_units; |
19617 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types, | |
19618 | write_one_signatured_type, &sig_data); | |
19619 | } | |
19620 | ||
156942c7 DE |
19621 | /* Now that we've processed all symbols we can shrink their cu_indices |
19622 | lists. */ | |
19623 | uniquify_cu_indices (symtab); | |
19624 | ||
9291a0cd TT |
19625 | obstack_init (&constant_pool); |
19626 | make_cleanup_obstack_free (&constant_pool); | |
19627 | obstack_init (&symtab_obstack); | |
19628 | make_cleanup_obstack_free (&symtab_obstack); | |
19629 | write_hash_table (symtab, &symtab_obstack, &constant_pool); | |
19630 | ||
19631 | obstack_init (&contents); | |
19632 | make_cleanup_obstack_free (&contents); | |
1fd400ff | 19633 | size_of_contents = 6 * sizeof (offset_type); |
9291a0cd TT |
19634 | total_len = size_of_contents; |
19635 | ||
19636 | /* The version number. */ | |
156942c7 | 19637 | val = MAYBE_SWAP (7); |
9291a0cd TT |
19638 | obstack_grow (&contents, &val, sizeof (val)); |
19639 | ||
19640 | /* The offset of the CU list from the start of the file. */ | |
19641 | val = MAYBE_SWAP (total_len); | |
19642 | obstack_grow (&contents, &val, sizeof (val)); | |
19643 | total_len += obstack_object_size (&cu_list); | |
19644 | ||
1fd400ff TT |
19645 | /* The offset of the types CU list from the start of the file. */ |
19646 | val = MAYBE_SWAP (total_len); | |
19647 | obstack_grow (&contents, &val, sizeof (val)); | |
19648 | total_len += obstack_object_size (&types_cu_list); | |
19649 | ||
9291a0cd TT |
19650 | /* The offset of the address table from the start of the file. */ |
19651 | val = MAYBE_SWAP (total_len); | |
19652 | obstack_grow (&contents, &val, sizeof (val)); | |
19653 | total_len += obstack_object_size (&addr_obstack); | |
19654 | ||
19655 | /* The offset of the symbol table from the start of the file. */ | |
19656 | val = MAYBE_SWAP (total_len); | |
19657 | obstack_grow (&contents, &val, sizeof (val)); | |
19658 | total_len += obstack_object_size (&symtab_obstack); | |
19659 | ||
19660 | /* The offset of the constant pool from the start of the file. */ | |
19661 | val = MAYBE_SWAP (total_len); | |
19662 | obstack_grow (&contents, &val, sizeof (val)); | |
19663 | total_len += obstack_object_size (&constant_pool); | |
19664 | ||
19665 | gdb_assert (obstack_object_size (&contents) == size_of_contents); | |
19666 | ||
19667 | write_obstack (out_file, &contents); | |
19668 | write_obstack (out_file, &cu_list); | |
1fd400ff | 19669 | write_obstack (out_file, &types_cu_list); |
9291a0cd TT |
19670 | write_obstack (out_file, &addr_obstack); |
19671 | write_obstack (out_file, &symtab_obstack); | |
19672 | write_obstack (out_file, &constant_pool); | |
19673 | ||
19674 | fclose (out_file); | |
19675 | ||
19676 | /* We want to keep the file, so we set cleanup_filename to NULL | |
19677 | here. See unlink_if_set. */ | |
19678 | cleanup_filename = NULL; | |
19679 | ||
19680 | do_cleanups (cleanup); | |
19681 | } | |
19682 | ||
90476074 TT |
19683 | /* Implementation of the `save gdb-index' command. |
19684 | ||
19685 | Note that the file format used by this command is documented in the | |
19686 | GDB manual. Any changes here must be documented there. */ | |
11570e71 | 19687 | |
9291a0cd TT |
19688 | static void |
19689 | save_gdb_index_command (char *arg, int from_tty) | |
19690 | { | |
19691 | struct objfile *objfile; | |
19692 | ||
19693 | if (!arg || !*arg) | |
96d19272 | 19694 | error (_("usage: save gdb-index DIRECTORY")); |
9291a0cd TT |
19695 | |
19696 | ALL_OBJFILES (objfile) | |
19697 | { | |
19698 | struct stat st; | |
19699 | ||
19700 | /* If the objfile does not correspond to an actual file, skip it. */ | |
19701 | if (stat (objfile->name, &st) < 0) | |
19702 | continue; | |
19703 | ||
19704 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
19705 | if (dwarf2_per_objfile) | |
19706 | { | |
19707 | volatile struct gdb_exception except; | |
19708 | ||
19709 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
19710 | { | |
19711 | write_psymtabs_to_index (objfile, arg); | |
19712 | } | |
19713 | if (except.reason < 0) | |
19714 | exception_fprintf (gdb_stderr, except, | |
19715 | _("Error while writing index for `%s': "), | |
19716 | objfile->name); | |
19717 | } | |
19718 | } | |
dce234bc PP |
19719 | } |
19720 | ||
9291a0cd TT |
19721 | \f |
19722 | ||
9eae7c52 TT |
19723 | int dwarf2_always_disassemble; |
19724 | ||
19725 | static void | |
19726 | show_dwarf2_always_disassemble (struct ui_file *file, int from_tty, | |
19727 | struct cmd_list_element *c, const char *value) | |
19728 | { | |
3e43a32a MS |
19729 | fprintf_filtered (file, |
19730 | _("Whether to always disassemble " | |
19731 | "DWARF expressions is %s.\n"), | |
9eae7c52 TT |
19732 | value); |
19733 | } | |
19734 | ||
900e11f9 JK |
19735 | static void |
19736 | show_check_physname (struct ui_file *file, int from_tty, | |
19737 | struct cmd_list_element *c, const char *value) | |
19738 | { | |
19739 | fprintf_filtered (file, | |
19740 | _("Whether to check \"physname\" is %s.\n"), | |
19741 | value); | |
19742 | } | |
19743 | ||
6502dd73 DJ |
19744 | void _initialize_dwarf2_read (void); |
19745 | ||
19746 | void | |
19747 | _initialize_dwarf2_read (void) | |
19748 | { | |
96d19272 JK |
19749 | struct cmd_list_element *c; |
19750 | ||
dce234bc | 19751 | dwarf2_objfile_data_key |
c1bd65d0 | 19752 | = register_objfile_data_with_cleanup (NULL, dwarf2_per_objfile_free); |
ae038cb0 | 19753 | |
1bedd215 AC |
19754 | add_prefix_cmd ("dwarf2", class_maintenance, set_dwarf2_cmd, _("\ |
19755 | Set DWARF 2 specific variables.\n\ | |
19756 | Configure DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
19757 | &set_dwarf2_cmdlist, "maintenance set dwarf2 ", |
19758 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
19759 | ||
1bedd215 AC |
19760 | add_prefix_cmd ("dwarf2", class_maintenance, show_dwarf2_cmd, _("\ |
19761 | Show DWARF 2 specific variables\n\ | |
19762 | Show DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
19763 | &show_dwarf2_cmdlist, "maintenance show dwarf2 ", |
19764 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
19765 | ||
19766 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, | |
7915a72c AC |
19767 | &dwarf2_max_cache_age, _("\ |
19768 | Set the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
19769 | Show the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
19770 | A higher limit means that cached compilation units will be stored\n\ | |
19771 | in memory longer, and more total memory will be used. Zero disables\n\ | |
19772 | caching, which can slow down startup."), | |
2c5b56ce | 19773 | NULL, |
920d2a44 | 19774 | show_dwarf2_max_cache_age, |
2c5b56ce | 19775 | &set_dwarf2_cmdlist, |
ae038cb0 | 19776 | &show_dwarf2_cmdlist); |
d97bc12b | 19777 | |
9eae7c52 TT |
19778 | add_setshow_boolean_cmd ("always-disassemble", class_obscure, |
19779 | &dwarf2_always_disassemble, _("\ | |
19780 | Set whether `info address' always disassembles DWARF expressions."), _("\ | |
19781 | Show whether `info address' always disassembles DWARF expressions."), _("\ | |
19782 | When enabled, DWARF expressions are always printed in an assembly-like\n\ | |
19783 | syntax. When disabled, expressions will be printed in a more\n\ | |
19784 | conversational style, when possible."), | |
19785 | NULL, | |
19786 | show_dwarf2_always_disassemble, | |
19787 | &set_dwarf2_cmdlist, | |
19788 | &show_dwarf2_cmdlist); | |
19789 | ||
45cfd468 DE |
19790 | add_setshow_boolean_cmd ("dwarf2-read", no_class, &dwarf2_read_debug, _("\ |
19791 | Set debugging of the dwarf2 reader."), _("\ | |
19792 | Show debugging of the dwarf2 reader."), _("\ | |
19793 | When enabled, debugging messages are printed during dwarf2 reading\n\ | |
19794 | and symtab expansion."), | |
19795 | NULL, | |
19796 | NULL, | |
19797 | &setdebuglist, &showdebuglist); | |
19798 | ||
ccce17b0 | 19799 | add_setshow_zuinteger_cmd ("dwarf2-die", no_class, &dwarf2_die_debug, _("\ |
d97bc12b DE |
19800 | Set debugging of the dwarf2 DIE reader."), _("\ |
19801 | Show debugging of the dwarf2 DIE reader."), _("\ | |
19802 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
19803 | The value is the maximum depth to print."), | |
ccce17b0 YQ |
19804 | NULL, |
19805 | NULL, | |
19806 | &setdebuglist, &showdebuglist); | |
9291a0cd | 19807 | |
900e11f9 JK |
19808 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
19809 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
19810 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
19811 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
19812 | the demangler."), | |
19813 | NULL, show_check_physname, | |
19814 | &setdebuglist, &showdebuglist); | |
19815 | ||
e615022a DE |
19816 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
19817 | no_class, &use_deprecated_index_sections, _("\ | |
19818 | Set whether to use deprecated gdb_index sections."), _("\ | |
19819 | Show whether to use deprecated gdb_index sections."), _("\ | |
19820 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
19821 | Normally they are ignored either because of a missing feature or\n\ | |
19822 | performance issue.\n\ | |
19823 | Warning: This option must be enabled before gdb reads the file."), | |
19824 | NULL, | |
19825 | NULL, | |
19826 | &setlist, &showlist); | |
19827 | ||
96d19272 | 19828 | c = add_cmd ("gdb-index", class_files, save_gdb_index_command, |
11570e71 | 19829 | _("\ |
fc1a9d6e | 19830 | Save a gdb-index file.\n\ |
11570e71 | 19831 | Usage: save gdb-index DIRECTORY"), |
96d19272 JK |
19832 | &save_cmdlist); |
19833 | set_cmd_completer (c, filename_completer); | |
6502dd73 | 19834 | } |