Commit | Line | Data |
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c906108c | 1 | /* DWARF 2 debugging format support for GDB. |
917c78fc | 2 | |
0b302171 | 3 | Copyright (C) 1994-2012 Free Software Foundation, Inc. |
c906108c SS |
4 | |
5 | Adapted by Gary Funck (gary@intrepid.com), Intrepid Technology, | |
6 | Inc. with support from Florida State University (under contract | |
7 | with the Ada Joint Program Office), and Silicon Graphics, Inc. | |
8 | Initial contribution by Brent Benson, Harris Computer Systems, Inc., | |
9 | based on Fred Fish's (Cygnus Support) implementation of DWARF 1 | |
7ce59000 | 10 | support. |
c906108c | 11 | |
c5aa993b | 12 | This file is part of GDB. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is free software; you can redistribute it and/or modify |
15 | it under the terms of the GNU General Public License as published by | |
a9762ec7 JB |
16 | the Free Software Foundation; either version 3 of the License, or |
17 | (at your option) any later version. | |
c906108c | 18 | |
a9762ec7 JB |
19 | This program is distributed in the hope that it will be useful, |
20 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | GNU General Public License for more details. | |
c906108c | 23 | |
c5aa993b | 24 | You should have received a copy of the GNU General Public License |
a9762ec7 | 25 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c | 26 | |
21b2bd31 DE |
27 | /* FIXME: Various die-reading functions need to be more careful with |
28 | reading off the end of the section. | |
29 | E.g., load_partial_dies, read_partial_die. */ | |
30 | ||
c906108c SS |
31 | #include "defs.h" |
32 | #include "bfd.h" | |
c906108c SS |
33 | #include "symtab.h" |
34 | #include "gdbtypes.h" | |
c906108c | 35 | #include "objfiles.h" |
fa8f86ff | 36 | #include "dwarf2.h" |
c906108c SS |
37 | #include "buildsym.h" |
38 | #include "demangle.h" | |
50f182aa | 39 | #include "gdb-demangle.h" |
c906108c | 40 | #include "expression.h" |
d5166ae1 | 41 | #include "filenames.h" /* for DOSish file names */ |
2e276125 | 42 | #include "macrotab.h" |
c906108c SS |
43 | #include "language.h" |
44 | #include "complaints.h" | |
357e46e7 | 45 | #include "bcache.h" |
4c2df51b DJ |
46 | #include "dwarf2expr.h" |
47 | #include "dwarf2loc.h" | |
9219021c | 48 | #include "cp-support.h" |
72bf9492 | 49 | #include "hashtab.h" |
ae038cb0 DJ |
50 | #include "command.h" |
51 | #include "gdbcmd.h" | |
edb3359d | 52 | #include "block.h" |
ff013f42 | 53 | #include "addrmap.h" |
94af9270 KS |
54 | #include "typeprint.h" |
55 | #include "jv-lang.h" | |
ccefe4c4 | 56 | #include "psympriv.h" |
9291a0cd TT |
57 | #include "exceptions.h" |
58 | #include "gdb_stat.h" | |
96d19272 | 59 | #include "completer.h" |
34eaf542 | 60 | #include "vec.h" |
98bfdba5 | 61 | #include "c-lang.h" |
a766d390 | 62 | #include "go-lang.h" |
98bfdba5 | 63 | #include "valprint.h" |
3019eac3 | 64 | #include "gdbcore.h" /* for gnutarget */ |
156942c7 | 65 | #include "gdb/gdb-index.h" |
60d5a603 | 66 | #include <ctype.h> |
4c2df51b | 67 | |
c906108c SS |
68 | #include <fcntl.h> |
69 | #include "gdb_string.h" | |
4bdf3d34 | 70 | #include "gdb_assert.h" |
c906108c | 71 | #include <sys/types.h> |
233a11ab CS |
72 | #ifdef HAVE_ZLIB_H |
73 | #include <zlib.h> | |
74 | #endif | |
dce234bc PP |
75 | #ifdef HAVE_MMAP |
76 | #include <sys/mman.h> | |
85d9bd0e TT |
77 | #ifndef MAP_FAILED |
78 | #define MAP_FAILED ((void *) -1) | |
79 | #endif | |
dce234bc | 80 | #endif |
d8151005 | 81 | |
34eaf542 TT |
82 | typedef struct symbol *symbolp; |
83 | DEF_VEC_P (symbolp); | |
84 | ||
45cfd468 DE |
85 | /* When non-zero, print basic high level tracing messages. |
86 | This is in contrast to the low level DIE reading of dwarf2_die_debug. */ | |
87 | static int dwarf2_read_debug = 0; | |
88 | ||
d97bc12b DE |
89 | /* When non-zero, dump DIEs after they are read in. */ |
90 | static int dwarf2_die_debug = 0; | |
91 | ||
900e11f9 JK |
92 | /* When non-zero, cross-check physname against demangler. */ |
93 | static int check_physname = 0; | |
94 | ||
481860b3 GB |
95 | /* When non-zero, do not reject deprecated .gdb_index sections. */ |
96 | int use_deprecated_index_sections = 0; | |
97 | ||
dce234bc PP |
98 | static int pagesize; |
99 | ||
df8a16a1 DJ |
100 | /* When set, the file that we're processing is known to have debugging |
101 | info for C++ namespaces. GCC 3.3.x did not produce this information, | |
102 | but later versions do. */ | |
103 | ||
104 | static int processing_has_namespace_info; | |
105 | ||
6502dd73 DJ |
106 | static const struct objfile_data *dwarf2_objfile_data_key; |
107 | ||
dce234bc PP |
108 | struct dwarf2_section_info |
109 | { | |
110 | asection *asection; | |
111 | gdb_byte *buffer; | |
112 | bfd_size_type size; | |
b315ab21 TG |
113 | /* Not NULL if the section was actually mmapped. */ |
114 | void *map_addr; | |
115 | /* Page aligned size of mmapped area. */ | |
116 | bfd_size_type map_len; | |
be391dca TT |
117 | /* True if we have tried to read this section. */ |
118 | int readin; | |
dce234bc PP |
119 | }; |
120 | ||
8b70b953 TT |
121 | typedef struct dwarf2_section_info dwarf2_section_info_def; |
122 | DEF_VEC_O (dwarf2_section_info_def); | |
123 | ||
9291a0cd TT |
124 | /* All offsets in the index are of this type. It must be |
125 | architecture-independent. */ | |
126 | typedef uint32_t offset_type; | |
127 | ||
128 | DEF_VEC_I (offset_type); | |
129 | ||
156942c7 DE |
130 | /* Ensure only legit values are used. */ |
131 | #define DW2_GDB_INDEX_SYMBOL_STATIC_SET_VALUE(cu_index, value) \ | |
132 | do { \ | |
133 | gdb_assert ((unsigned int) (value) <= 1); \ | |
134 | GDB_INDEX_SYMBOL_STATIC_SET_VALUE((cu_index), (value)); \ | |
135 | } while (0) | |
136 | ||
137 | /* Ensure only legit values are used. */ | |
138 | #define DW2_GDB_INDEX_SYMBOL_KIND_SET_VALUE(cu_index, value) \ | |
139 | do { \ | |
140 | gdb_assert ((value) >= GDB_INDEX_SYMBOL_KIND_TYPE \ | |
141 | && (value) <= GDB_INDEX_SYMBOL_KIND_OTHER); \ | |
142 | GDB_INDEX_SYMBOL_KIND_SET_VALUE((cu_index), (value)); \ | |
143 | } while (0) | |
144 | ||
145 | /* Ensure we don't use more than the alloted nuber of bits for the CU. */ | |
146 | #define DW2_GDB_INDEX_CU_SET_VALUE(cu_index, value) \ | |
147 | do { \ | |
148 | gdb_assert (((value) & ~GDB_INDEX_CU_MASK) == 0); \ | |
149 | GDB_INDEX_CU_SET_VALUE((cu_index), (value)); \ | |
150 | } while (0) | |
151 | ||
9291a0cd TT |
152 | /* A description of the mapped index. The file format is described in |
153 | a comment by the code that writes the index. */ | |
154 | struct mapped_index | |
155 | { | |
559a7a62 JK |
156 | /* Index data format version. */ |
157 | int version; | |
158 | ||
9291a0cd TT |
159 | /* The total length of the buffer. */ |
160 | off_t total_size; | |
b11b1f88 | 161 | |
9291a0cd TT |
162 | /* A pointer to the address table data. */ |
163 | const gdb_byte *address_table; | |
b11b1f88 | 164 | |
9291a0cd TT |
165 | /* Size of the address table data in bytes. */ |
166 | offset_type address_table_size; | |
b11b1f88 | 167 | |
3876f04e DE |
168 | /* The symbol table, implemented as a hash table. */ |
169 | const offset_type *symbol_table; | |
b11b1f88 | 170 | |
9291a0cd | 171 | /* Size in slots, each slot is 2 offset_types. */ |
3876f04e | 172 | offset_type symbol_table_slots; |
b11b1f88 | 173 | |
9291a0cd TT |
174 | /* A pointer to the constant pool. */ |
175 | const char *constant_pool; | |
176 | }; | |
177 | ||
95554aad TT |
178 | typedef struct dwarf2_per_cu_data *dwarf2_per_cu_ptr; |
179 | DEF_VEC_P (dwarf2_per_cu_ptr); | |
180 | ||
9cdd5dbd DE |
181 | /* Collection of data recorded per objfile. |
182 | This hangs off of dwarf2_objfile_data_key. */ | |
183 | ||
6502dd73 DJ |
184 | struct dwarf2_per_objfile |
185 | { | |
dce234bc PP |
186 | struct dwarf2_section_info info; |
187 | struct dwarf2_section_info abbrev; | |
188 | struct dwarf2_section_info line; | |
dce234bc PP |
189 | struct dwarf2_section_info loc; |
190 | struct dwarf2_section_info macinfo; | |
cf2c3c16 | 191 | struct dwarf2_section_info macro; |
dce234bc PP |
192 | struct dwarf2_section_info str; |
193 | struct dwarf2_section_info ranges; | |
3019eac3 | 194 | struct dwarf2_section_info addr; |
dce234bc PP |
195 | struct dwarf2_section_info frame; |
196 | struct dwarf2_section_info eh_frame; | |
9291a0cd | 197 | struct dwarf2_section_info gdb_index; |
ae038cb0 | 198 | |
8b70b953 TT |
199 | VEC (dwarf2_section_info_def) *types; |
200 | ||
be391dca TT |
201 | /* Back link. */ |
202 | struct objfile *objfile; | |
203 | ||
d467dd73 | 204 | /* Table of all the compilation units. This is used to locate |
10b3939b | 205 | the target compilation unit of a particular reference. */ |
ae038cb0 DJ |
206 | struct dwarf2_per_cu_data **all_comp_units; |
207 | ||
208 | /* The number of compilation units in ALL_COMP_UNITS. */ | |
209 | int n_comp_units; | |
210 | ||
1fd400ff | 211 | /* The number of .debug_types-related CUs. */ |
d467dd73 | 212 | int n_type_units; |
1fd400ff | 213 | |
d467dd73 DE |
214 | /* The .debug_types-related CUs (TUs). */ |
215 | struct dwarf2_per_cu_data **all_type_units; | |
1fd400ff | 216 | |
ae038cb0 DJ |
217 | /* A chain of compilation units that are currently read in, so that |
218 | they can be freed later. */ | |
219 | struct dwarf2_per_cu_data *read_in_chain; | |
72dca2f5 | 220 | |
348e048f DE |
221 | /* A table mapping .debug_types signatures to its signatured_type entry. |
222 | This is NULL if the .debug_types section hasn't been read in yet. */ | |
223 | htab_t signatured_types; | |
224 | ||
3019eac3 DE |
225 | /* A table mapping DW_AT_dwo_name values to struct dwo_file objects. |
226 | This is NULL if the table hasn't been allocated yet. */ | |
227 | htab_t dwo_files; | |
228 | ||
72dca2f5 FR |
229 | /* A flag indicating wether this objfile has a section loaded at a |
230 | VMA of 0. */ | |
231 | int has_section_at_zero; | |
9291a0cd | 232 | |
ae2de4f8 DE |
233 | /* True if we are using the mapped index, |
234 | or we are faking it for OBJF_READNOW's sake. */ | |
9291a0cd TT |
235 | unsigned char using_index; |
236 | ||
ae2de4f8 | 237 | /* The mapped index, or NULL if .gdb_index is missing or not being used. */ |
9291a0cd | 238 | struct mapped_index *index_table; |
98bfdba5 | 239 | |
7b9f3c50 DE |
240 | /* When using index_table, this keeps track of all quick_file_names entries. |
241 | TUs can share line table entries with CUs or other TUs, and there can be | |
242 | a lot more TUs than unique line tables, so we maintain a separate table | |
243 | of all line table entries to support the sharing. */ | |
244 | htab_t quick_file_names_table; | |
245 | ||
98bfdba5 PA |
246 | /* Set during partial symbol reading, to prevent queueing of full |
247 | symbols. */ | |
248 | int reading_partial_symbols; | |
673bfd45 | 249 | |
dee91e82 | 250 | /* Table mapping type DIEs to their struct type *. |
673bfd45 | 251 | This is NULL if not allocated yet. |
dee91e82 DE |
252 | The mapping is done via (CU/TU signature + DIE offset) -> type. */ |
253 | htab_t die_type_hash; | |
95554aad TT |
254 | |
255 | /* The CUs we recently read. */ | |
256 | VEC (dwarf2_per_cu_ptr) *just_read_cus; | |
6502dd73 DJ |
257 | }; |
258 | ||
259 | static struct dwarf2_per_objfile *dwarf2_per_objfile; | |
c906108c | 260 | |
251d32d9 | 261 | /* Default names of the debugging sections. */ |
c906108c | 262 | |
233a11ab CS |
263 | /* Note that if the debugging section has been compressed, it might |
264 | have a name like .zdebug_info. */ | |
265 | ||
9cdd5dbd DE |
266 | static const struct dwarf2_debug_sections dwarf2_elf_names = |
267 | { | |
251d32d9 TG |
268 | { ".debug_info", ".zdebug_info" }, |
269 | { ".debug_abbrev", ".zdebug_abbrev" }, | |
270 | { ".debug_line", ".zdebug_line" }, | |
271 | { ".debug_loc", ".zdebug_loc" }, | |
272 | { ".debug_macinfo", ".zdebug_macinfo" }, | |
cf2c3c16 | 273 | { ".debug_macro", ".zdebug_macro" }, |
251d32d9 TG |
274 | { ".debug_str", ".zdebug_str" }, |
275 | { ".debug_ranges", ".zdebug_ranges" }, | |
276 | { ".debug_types", ".zdebug_types" }, | |
3019eac3 | 277 | { ".debug_addr", ".zdebug_addr" }, |
251d32d9 TG |
278 | { ".debug_frame", ".zdebug_frame" }, |
279 | { ".eh_frame", NULL }, | |
24d3216f TT |
280 | { ".gdb_index", ".zgdb_index" }, |
281 | 23 | |
251d32d9 | 282 | }; |
c906108c | 283 | |
3019eac3 DE |
284 | /* List of DWO sections. */ |
285 | ||
286 | static const struct dwo_section_names | |
287 | { | |
288 | struct dwarf2_section_names abbrev_dwo; | |
289 | struct dwarf2_section_names info_dwo; | |
290 | struct dwarf2_section_names line_dwo; | |
291 | struct dwarf2_section_names loc_dwo; | |
09262596 DE |
292 | struct dwarf2_section_names macinfo_dwo; |
293 | struct dwarf2_section_names macro_dwo; | |
3019eac3 DE |
294 | struct dwarf2_section_names str_dwo; |
295 | struct dwarf2_section_names str_offsets_dwo; | |
296 | struct dwarf2_section_names types_dwo; | |
297 | } | |
298 | dwo_section_names = | |
299 | { | |
300 | { ".debug_abbrev.dwo", ".zdebug_abbrev.dwo" }, | |
301 | { ".debug_info.dwo", ".zdebug_info.dwo" }, | |
302 | { ".debug_line.dwo", ".zdebug_line.dwo" }, | |
303 | { ".debug_loc.dwo", ".zdebug_loc.dwo" }, | |
09262596 DE |
304 | { ".debug_macinfo.dwo", ".zdebug_macinfo.dwo" }, |
305 | { ".debug_macro.dwo", ".zdebug_macro.dwo" }, | |
3019eac3 DE |
306 | { ".debug_str.dwo", ".zdebug_str.dwo" }, |
307 | { ".debug_str_offsets.dwo", ".zdebug_str_offsets.dwo" }, | |
308 | { ".debug_types.dwo", ".zdebug_types.dwo" }, | |
309 | }; | |
310 | ||
c906108c SS |
311 | /* local data types */ |
312 | ||
107d2387 AC |
313 | /* The data in a compilation unit header, after target2host |
314 | translation, looks like this. */ | |
c906108c | 315 | struct comp_unit_head |
a738430d | 316 | { |
c764a876 | 317 | unsigned int length; |
a738430d | 318 | short version; |
a738430d MK |
319 | unsigned char addr_size; |
320 | unsigned char signed_addr_p; | |
b64f50a1 | 321 | sect_offset abbrev_offset; |
57349743 | 322 | |
a738430d MK |
323 | /* Size of file offsets; either 4 or 8. */ |
324 | unsigned int offset_size; | |
57349743 | 325 | |
a738430d MK |
326 | /* Size of the length field; either 4 or 12. */ |
327 | unsigned int initial_length_size; | |
57349743 | 328 | |
a738430d MK |
329 | /* Offset to the first byte of this compilation unit header in the |
330 | .debug_info section, for resolving relative reference dies. */ | |
b64f50a1 | 331 | sect_offset offset; |
57349743 | 332 | |
d00adf39 DE |
333 | /* Offset to first die in this cu from the start of the cu. |
334 | This will be the first byte following the compilation unit header. */ | |
b64f50a1 | 335 | cu_offset first_die_offset; |
a738430d | 336 | }; |
c906108c | 337 | |
3da10d80 KS |
338 | /* Type used for delaying computation of method physnames. |
339 | See comments for compute_delayed_physnames. */ | |
340 | struct delayed_method_info | |
341 | { | |
342 | /* The type to which the method is attached, i.e., its parent class. */ | |
343 | struct type *type; | |
344 | ||
345 | /* The index of the method in the type's function fieldlists. */ | |
346 | int fnfield_index; | |
347 | ||
348 | /* The index of the method in the fieldlist. */ | |
349 | int index; | |
350 | ||
351 | /* The name of the DIE. */ | |
352 | const char *name; | |
353 | ||
354 | /* The DIE associated with this method. */ | |
355 | struct die_info *die; | |
356 | }; | |
357 | ||
358 | typedef struct delayed_method_info delayed_method_info; | |
359 | DEF_VEC_O (delayed_method_info); | |
360 | ||
e7c27a73 DJ |
361 | /* Internal state when decoding a particular compilation unit. */ |
362 | struct dwarf2_cu | |
363 | { | |
364 | /* The objfile containing this compilation unit. */ | |
365 | struct objfile *objfile; | |
366 | ||
d00adf39 | 367 | /* The header of the compilation unit. */ |
e7c27a73 | 368 | struct comp_unit_head header; |
e142c38c | 369 | |
d00adf39 DE |
370 | /* Base address of this compilation unit. */ |
371 | CORE_ADDR base_address; | |
372 | ||
373 | /* Non-zero if base_address has been set. */ | |
374 | int base_known; | |
375 | ||
e142c38c DJ |
376 | /* The language we are debugging. */ |
377 | enum language language; | |
378 | const struct language_defn *language_defn; | |
379 | ||
b0f35d58 DL |
380 | const char *producer; |
381 | ||
e142c38c DJ |
382 | /* The generic symbol table building routines have separate lists for |
383 | file scope symbols and all all other scopes (local scopes). So | |
384 | we need to select the right one to pass to add_symbol_to_list(). | |
385 | We do it by keeping a pointer to the correct list in list_in_scope. | |
386 | ||
387 | FIXME: The original dwarf code just treated the file scope as the | |
388 | first local scope, and all other local scopes as nested local | |
389 | scopes, and worked fine. Check to see if we really need to | |
390 | distinguish these in buildsym.c. */ | |
391 | struct pending **list_in_scope; | |
392 | ||
433df2d4 DE |
393 | /* The abbrev table for this CU. |
394 | Normally this points to the abbrev table in the objfile. | |
395 | But if DWO_UNIT is non-NULL this is the abbrev table in the DWO file. */ | |
396 | struct abbrev_table *abbrev_table; | |
72bf9492 | 397 | |
b64f50a1 JK |
398 | /* Hash table holding all the loaded partial DIEs |
399 | with partial_die->offset.SECT_OFF as hash. */ | |
72bf9492 DJ |
400 | htab_t partial_dies; |
401 | ||
402 | /* Storage for things with the same lifetime as this read-in compilation | |
403 | unit, including partial DIEs. */ | |
404 | struct obstack comp_unit_obstack; | |
405 | ||
ae038cb0 DJ |
406 | /* When multiple dwarf2_cu structures are living in memory, this field |
407 | chains them all together, so that they can be released efficiently. | |
408 | We will probably also want a generation counter so that most-recently-used | |
409 | compilation units are cached... */ | |
410 | struct dwarf2_per_cu_data *read_in_chain; | |
411 | ||
412 | /* Backchain to our per_cu entry if the tree has been built. */ | |
413 | struct dwarf2_per_cu_data *per_cu; | |
414 | ||
415 | /* How many compilation units ago was this CU last referenced? */ | |
416 | int last_used; | |
417 | ||
b64f50a1 JK |
418 | /* A hash table of DIE cu_offset for following references with |
419 | die_info->offset.sect_off as hash. */ | |
51545339 | 420 | htab_t die_hash; |
10b3939b DJ |
421 | |
422 | /* Full DIEs if read in. */ | |
423 | struct die_info *dies; | |
424 | ||
425 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
426 | units referenced by this one. Only set during full symbol processing; | |
427 | partial symbol tables do not have dependencies. */ | |
428 | htab_t dependencies; | |
429 | ||
cb1df416 DJ |
430 | /* Header data from the line table, during full symbol processing. */ |
431 | struct line_header *line_header; | |
432 | ||
3da10d80 KS |
433 | /* A list of methods which need to have physnames computed |
434 | after all type information has been read. */ | |
435 | VEC (delayed_method_info) *method_list; | |
436 | ||
96408a79 SA |
437 | /* To be copied to symtab->call_site_htab. */ |
438 | htab_t call_site_htab; | |
439 | ||
034e5797 DE |
440 | /* Non-NULL if this CU came from a DWO file. |
441 | There is an invariant here that is important to remember: | |
442 | Except for attributes copied from the top level DIE in the "main" | |
443 | (or "stub") file in preparation for reading the DWO file | |
444 | (e.g., DW_AT_GNU_addr_base), we KISS: there is only *one* CU. | |
445 | Either there isn't a DWO file (in which case this is NULL and the point | |
446 | is moot), or there is and either we're not going to read it (in which | |
447 | case this is NULL) or there is and we are reading it (in which case this | |
448 | is non-NULL). */ | |
3019eac3 DE |
449 | struct dwo_unit *dwo_unit; |
450 | ||
451 | /* The DW_AT_addr_base attribute if present, zero otherwise | |
452 | (zero is a valid value though). | |
453 | Note this value comes from the stub CU/TU's DIE. */ | |
454 | ULONGEST addr_base; | |
455 | ||
2e3cf129 DE |
456 | /* The DW_AT_ranges_base attribute if present, zero otherwise |
457 | (zero is a valid value though). | |
458 | Note this value comes from the stub CU/TU's DIE. | |
459 | Also note that the value is zero in the non-DWO case so this value can | |
460 | be used without needing to know whether DWO files are in use or not. */ | |
461 | ULONGEST ranges_base; | |
462 | ||
ae038cb0 DJ |
463 | /* Mark used when releasing cached dies. */ |
464 | unsigned int mark : 1; | |
465 | ||
8be455d7 JK |
466 | /* This CU references .debug_loc. See the symtab->locations_valid field. |
467 | This test is imperfect as there may exist optimized debug code not using | |
468 | any location list and still facing inlining issues if handled as | |
469 | unoptimized code. For a future better test see GCC PR other/32998. */ | |
8be455d7 | 470 | unsigned int has_loclist : 1; |
ba919b58 | 471 | |
685b1105 JK |
472 | /* These cache the results for producer_is_gxx_lt_4_6 and producer_is_icc. |
473 | CHECKED_PRODUCER is set if both PRODUCER_IS_GXX_LT_4_6 and PRODUCER_IS_ICC | |
474 | are valid. This information is cached because profiling CU expansion | |
475 | showed excessive time spent in producer_is_gxx_lt_4_6. */ | |
ba919b58 TT |
476 | unsigned int checked_producer : 1; |
477 | unsigned int producer_is_gxx_lt_4_6 : 1; | |
685b1105 | 478 | unsigned int producer_is_icc : 1; |
e7c27a73 DJ |
479 | }; |
480 | ||
10b3939b DJ |
481 | /* Persistent data held for a compilation unit, even when not |
482 | processing it. We put a pointer to this structure in the | |
28dee7f5 | 483 | read_symtab_private field of the psymtab. */ |
10b3939b | 484 | |
ae038cb0 DJ |
485 | struct dwarf2_per_cu_data |
486 | { | |
348e048f | 487 | /* The start offset and length of this compilation unit. 2**29-1 |
ae038cb0 | 488 | bytes should suffice to store the length of any compilation unit |
45452591 DE |
489 | - if it doesn't, GDB will fall over anyway. |
490 | NOTE: Unlike comp_unit_head.length, this length includes | |
3019eac3 DE |
491 | initial_length_size. |
492 | If the DIE refers to a DWO file, this is always of the original die, | |
493 | not the DWO file. */ | |
b64f50a1 | 494 | sect_offset offset; |
348e048f | 495 | unsigned int length : 29; |
ae038cb0 DJ |
496 | |
497 | /* Flag indicating this compilation unit will be read in before | |
498 | any of the current compilation units are processed. */ | |
c764a876 | 499 | unsigned int queued : 1; |
ae038cb0 | 500 | |
0d99eb77 DE |
501 | /* This flag will be set when reading partial DIEs if we need to load |
502 | absolutely all DIEs for this compilation unit, instead of just the ones | |
503 | we think are interesting. It gets set if we look for a DIE in the | |
5afb4e99 DJ |
504 | hash table and don't find it. */ |
505 | unsigned int load_all_dies : 1; | |
506 | ||
3019eac3 DE |
507 | /* Non-zero if this CU is from .debug_types. */ |
508 | unsigned int is_debug_types : 1; | |
509 | ||
510 | /* The section this CU/TU lives in. | |
511 | If the DIE refers to a DWO file, this is always the original die, | |
512 | not the DWO file. */ | |
513 | struct dwarf2_section_info *info_or_types_section; | |
348e048f | 514 | |
17ea53c3 JK |
515 | /* Set to non-NULL iff this CU is currently loaded. When it gets freed out |
516 | of the CU cache it gets reset to NULL again. */ | |
ae038cb0 | 517 | struct dwarf2_cu *cu; |
1c379e20 | 518 | |
9cdd5dbd DE |
519 | /* The corresponding objfile. |
520 | Normally we can get the objfile from dwarf2_per_objfile. | |
521 | However we can enter this file with just a "per_cu" handle. */ | |
9291a0cd TT |
522 | struct objfile *objfile; |
523 | ||
524 | /* When using partial symbol tables, the 'psymtab' field is active. | |
525 | Otherwise the 'quick' field is active. */ | |
526 | union | |
527 | { | |
528 | /* The partial symbol table associated with this compilation unit, | |
95554aad | 529 | or NULL for unread partial units. */ |
9291a0cd TT |
530 | struct partial_symtab *psymtab; |
531 | ||
532 | /* Data needed by the "quick" functions. */ | |
533 | struct dwarf2_per_cu_quick_data *quick; | |
534 | } v; | |
95554aad TT |
535 | |
536 | /* The CUs we import using DW_TAG_imported_unit. This is filled in | |
537 | while reading psymtabs, used to compute the psymtab dependencies, | |
538 | and then cleared. Then it is filled in again while reading full | |
539 | symbols, and only deleted when the objfile is destroyed. */ | |
540 | VEC (dwarf2_per_cu_ptr) *imported_symtabs; | |
ae038cb0 DJ |
541 | }; |
542 | ||
348e048f DE |
543 | /* Entry in the signatured_types hash table. */ |
544 | ||
545 | struct signatured_type | |
546 | { | |
42e7ad6c DE |
547 | /* The "per_cu" object of this type. |
548 | N.B.: This is the first member so that it's easy to convert pointers | |
549 | between them. */ | |
550 | struct dwarf2_per_cu_data per_cu; | |
551 | ||
3019eac3 | 552 | /* The type's signature. */ |
348e048f DE |
553 | ULONGEST signature; |
554 | ||
3019eac3 DE |
555 | /* Offset in the TU of the type's DIE, as read from the TU header. |
556 | If the definition lives in a DWO file, this value is unusable. */ | |
557 | cu_offset type_offset_in_tu; | |
558 | ||
559 | /* Offset in the section of the type's DIE. | |
560 | If the definition lives in a DWO file, this is the offset in the | |
561 | .debug_types.dwo section. | |
562 | The value is zero until the actual value is known. | |
563 | Zero is otherwise not a valid section offset. */ | |
564 | sect_offset type_offset_in_section; | |
348e048f DE |
565 | }; |
566 | ||
3019eac3 DE |
567 | /* These sections are what may appear in a "dwo" file. */ |
568 | ||
569 | struct dwo_sections | |
570 | { | |
571 | struct dwarf2_section_info abbrev; | |
572 | struct dwarf2_section_info info; | |
573 | struct dwarf2_section_info line; | |
574 | struct dwarf2_section_info loc; | |
09262596 DE |
575 | struct dwarf2_section_info macinfo; |
576 | struct dwarf2_section_info macro; | |
3019eac3 DE |
577 | struct dwarf2_section_info str; |
578 | struct dwarf2_section_info str_offsets; | |
579 | VEC (dwarf2_section_info_def) *types; | |
580 | }; | |
581 | ||
582 | /* Common bits of DWO CUs/TUs. */ | |
583 | ||
584 | struct dwo_unit | |
585 | { | |
586 | /* Backlink to the containing struct dwo_file. */ | |
587 | struct dwo_file *dwo_file; | |
588 | ||
589 | /* The "id" that distinguishes this CU/TU. | |
590 | .debug_info calls this "dwo_id", .debug_types calls this "signature". | |
591 | Since signatures came first, we stick with it for consistency. */ | |
592 | ULONGEST signature; | |
593 | ||
594 | /* The section this CU/TU lives in, in the DWO file. */ | |
595 | struct dwarf2_section_info *info_or_types_section; | |
596 | ||
597 | /* Same as dwarf2_per_cu_data:{offset,length} but for the DWO section. */ | |
598 | sect_offset offset; | |
599 | unsigned int length; | |
600 | ||
601 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
602 | cu_offset type_offset_in_tu; | |
603 | }; | |
604 | ||
605 | /* Data for one DWO file. */ | |
606 | ||
607 | struct dwo_file | |
608 | { | |
609 | /* The DW_AT_GNU_dwo_name attribute. | |
610 | We don't manage space for this, it's an attribute. */ | |
611 | const char *dwo_name; | |
612 | ||
613 | /* The bfd, when the file is open. Otherwise this is NULL. */ | |
614 | bfd *dwo_bfd; | |
615 | ||
616 | /* Section info for this file. */ | |
617 | struct dwo_sections sections; | |
618 | ||
619 | /* Table of CUs in the file. | |
620 | Each element is a struct dwo_unit. */ | |
621 | htab_t cus; | |
622 | ||
623 | /* Table of TUs in the file. | |
624 | Each element is a struct dwo_unit. */ | |
625 | htab_t tus; | |
626 | }; | |
627 | ||
0963b4bd MS |
628 | /* Struct used to pass misc. parameters to read_die_and_children, et |
629 | al. which are used for both .debug_info and .debug_types dies. | |
630 | All parameters here are unchanging for the life of the call. This | |
dee91e82 | 631 | struct exists to abstract away the constant parameters of die reading. */ |
93311388 DE |
632 | |
633 | struct die_reader_specs | |
634 | { | |
dee91e82 | 635 | /* die_section->asection->owner. */ |
93311388 DE |
636 | bfd* abfd; |
637 | ||
638 | /* The CU of the DIE we are parsing. */ | |
639 | struct dwarf2_cu *cu; | |
640 | ||
3019eac3 DE |
641 | /* Non-NULL if reading a DWO file. */ |
642 | struct dwo_file *dwo_file; | |
643 | ||
dee91e82 | 644 | /* The section the die comes from. |
3019eac3 | 645 | This is either .debug_info or .debug_types, or the .dwo variants. */ |
dee91e82 DE |
646 | struct dwarf2_section_info *die_section; |
647 | ||
648 | /* die_section->buffer. */ | |
649 | gdb_byte *buffer; | |
f664829e DE |
650 | |
651 | /* The end of the buffer. */ | |
652 | const gdb_byte *buffer_end; | |
93311388 DE |
653 | }; |
654 | ||
fd820528 | 655 | /* Type of function passed to init_cutu_and_read_dies, et.al. */ |
dee91e82 DE |
656 | typedef void (die_reader_func_ftype) (const struct die_reader_specs *reader, |
657 | gdb_byte *info_ptr, | |
658 | struct die_info *comp_unit_die, | |
659 | int has_children, | |
660 | void *data); | |
661 | ||
debd256d JB |
662 | /* The line number information for a compilation unit (found in the |
663 | .debug_line section) begins with a "statement program header", | |
664 | which contains the following information. */ | |
665 | struct line_header | |
666 | { | |
667 | unsigned int total_length; | |
668 | unsigned short version; | |
669 | unsigned int header_length; | |
670 | unsigned char minimum_instruction_length; | |
2dc7f7b3 | 671 | unsigned char maximum_ops_per_instruction; |
debd256d JB |
672 | unsigned char default_is_stmt; |
673 | int line_base; | |
674 | unsigned char line_range; | |
675 | unsigned char opcode_base; | |
676 | ||
677 | /* standard_opcode_lengths[i] is the number of operands for the | |
678 | standard opcode whose value is i. This means that | |
679 | standard_opcode_lengths[0] is unused, and the last meaningful | |
680 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
681 | unsigned char *standard_opcode_lengths; | |
682 | ||
683 | /* The include_directories table. NOTE! These strings are not | |
684 | allocated with xmalloc; instead, they are pointers into | |
685 | debug_line_buffer. If you try to free them, `free' will get | |
686 | indigestion. */ | |
687 | unsigned int num_include_dirs, include_dirs_size; | |
688 | char **include_dirs; | |
689 | ||
690 | /* The file_names table. NOTE! These strings are not allocated | |
691 | with xmalloc; instead, they are pointers into debug_line_buffer. | |
692 | Don't try to free them directly. */ | |
693 | unsigned int num_file_names, file_names_size; | |
694 | struct file_entry | |
c906108c | 695 | { |
debd256d JB |
696 | char *name; |
697 | unsigned int dir_index; | |
698 | unsigned int mod_time; | |
699 | unsigned int length; | |
aaa75496 | 700 | int included_p; /* Non-zero if referenced by the Line Number Program. */ |
cb1df416 | 701 | struct symtab *symtab; /* The associated symbol table, if any. */ |
debd256d JB |
702 | } *file_names; |
703 | ||
704 | /* The start and end of the statement program following this | |
6502dd73 | 705 | header. These point into dwarf2_per_objfile->line_buffer. */ |
fe1b8b76 | 706 | gdb_byte *statement_program_start, *statement_program_end; |
debd256d | 707 | }; |
c906108c SS |
708 | |
709 | /* When we construct a partial symbol table entry we only | |
0963b4bd | 710 | need this much information. */ |
c906108c SS |
711 | struct partial_die_info |
712 | { | |
72bf9492 | 713 | /* Offset of this DIE. */ |
b64f50a1 | 714 | sect_offset offset; |
72bf9492 DJ |
715 | |
716 | /* DWARF-2 tag for this DIE. */ | |
717 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
718 | ||
72bf9492 DJ |
719 | /* Assorted flags describing the data found in this DIE. */ |
720 | unsigned int has_children : 1; | |
721 | unsigned int is_external : 1; | |
722 | unsigned int is_declaration : 1; | |
723 | unsigned int has_type : 1; | |
724 | unsigned int has_specification : 1; | |
725 | unsigned int has_pc_info : 1; | |
481860b3 | 726 | unsigned int may_be_inlined : 1; |
72bf9492 DJ |
727 | |
728 | /* Flag set if the SCOPE field of this structure has been | |
729 | computed. */ | |
730 | unsigned int scope_set : 1; | |
731 | ||
fa4028e9 JB |
732 | /* Flag set if the DIE has a byte_size attribute. */ |
733 | unsigned int has_byte_size : 1; | |
734 | ||
98bfdba5 PA |
735 | /* Flag set if any of the DIE's children are template arguments. */ |
736 | unsigned int has_template_arguments : 1; | |
737 | ||
abc72ce4 DE |
738 | /* Flag set if fixup_partial_die has been called on this die. */ |
739 | unsigned int fixup_called : 1; | |
740 | ||
72bf9492 | 741 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 742 | sometimes a default name for unnamed DIEs. */ |
c906108c | 743 | char *name; |
72bf9492 | 744 | |
abc72ce4 DE |
745 | /* The linkage name, if present. */ |
746 | const char *linkage_name; | |
747 | ||
72bf9492 DJ |
748 | /* The scope to prepend to our children. This is generally |
749 | allocated on the comp_unit_obstack, so will disappear | |
750 | when this compilation unit leaves the cache. */ | |
751 | char *scope; | |
752 | ||
95554aad TT |
753 | /* Some data associated with the partial DIE. The tag determines |
754 | which field is live. */ | |
755 | union | |
756 | { | |
757 | /* The location description associated with this DIE, if any. */ | |
758 | struct dwarf_block *locdesc; | |
759 | /* The offset of an import, for DW_TAG_imported_unit. */ | |
760 | sect_offset offset; | |
761 | } d; | |
72bf9492 DJ |
762 | |
763 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
c906108c SS |
764 | CORE_ADDR lowpc; |
765 | CORE_ADDR highpc; | |
72bf9492 | 766 | |
93311388 | 767 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 768 | DW_AT_sibling, if any. */ |
abc72ce4 DE |
769 | /* NOTE: This member isn't strictly necessary, read_partial_die could |
770 | return DW_AT_sibling values to its caller load_partial_dies. */ | |
fe1b8b76 | 771 | gdb_byte *sibling; |
72bf9492 DJ |
772 | |
773 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
774 | DW_AT_specification (or DW_AT_abstract_origin or | |
775 | DW_AT_extension). */ | |
b64f50a1 | 776 | sect_offset spec_offset; |
72bf9492 DJ |
777 | |
778 | /* Pointers to this DIE's parent, first child, and next sibling, | |
779 | if any. */ | |
780 | struct partial_die_info *die_parent, *die_child, *die_sibling; | |
c906108c SS |
781 | }; |
782 | ||
0963b4bd | 783 | /* This data structure holds the information of an abbrev. */ |
c906108c SS |
784 | struct abbrev_info |
785 | { | |
786 | unsigned int number; /* number identifying abbrev */ | |
787 | enum dwarf_tag tag; /* dwarf tag */ | |
f3dd6933 DJ |
788 | unsigned short has_children; /* boolean */ |
789 | unsigned short num_attrs; /* number of attributes */ | |
c906108c SS |
790 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ |
791 | struct abbrev_info *next; /* next in chain */ | |
792 | }; | |
793 | ||
794 | struct attr_abbrev | |
795 | { | |
9d25dd43 DE |
796 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
797 | ENUM_BITFIELD(dwarf_form) form : 16; | |
c906108c SS |
798 | }; |
799 | ||
433df2d4 DE |
800 | /* Size of abbrev_table.abbrev_hash_table. */ |
801 | #define ABBREV_HASH_SIZE 121 | |
802 | ||
803 | /* Top level data structure to contain an abbreviation table. */ | |
804 | ||
805 | struct abbrev_table | |
806 | { | |
807 | /* Where the abbrev table came from. */ | |
808 | struct dwarf2_section_info *section; | |
809 | sect_offset offset; | |
810 | ||
811 | /* Storage for the abbrev table. */ | |
812 | struct obstack abbrev_obstack; | |
813 | ||
814 | /* Hash table of abbrevs. | |
815 | This is an array of size ABBREV_HASH_SIZE allocated in abbrev_obstack. | |
816 | It could be statically allocated, but the previous code didn't so we | |
817 | don't either. */ | |
818 | struct abbrev_info **abbrevs; | |
819 | }; | |
820 | ||
0963b4bd | 821 | /* Attributes have a name and a value. */ |
b60c80d6 DJ |
822 | struct attribute |
823 | { | |
9d25dd43 | 824 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
8285870a JK |
825 | ENUM_BITFIELD(dwarf_form) form : 15; |
826 | ||
827 | /* Has DW_STRING already been updated by dwarf2_canonicalize_name? This | |
828 | field should be in u.str (existing only for DW_STRING) but it is kept | |
829 | here for better struct attribute alignment. */ | |
830 | unsigned int string_is_canonical : 1; | |
831 | ||
b60c80d6 DJ |
832 | union |
833 | { | |
834 | char *str; | |
835 | struct dwarf_block *blk; | |
43bbcdc2 PH |
836 | ULONGEST unsnd; |
837 | LONGEST snd; | |
b60c80d6 | 838 | CORE_ADDR addr; |
348e048f | 839 | struct signatured_type *signatured_type; |
b60c80d6 DJ |
840 | } |
841 | u; | |
842 | }; | |
843 | ||
0963b4bd | 844 | /* This data structure holds a complete die structure. */ |
c906108c SS |
845 | struct die_info |
846 | { | |
76815b17 DE |
847 | /* DWARF-2 tag for this DIE. */ |
848 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
849 | ||
850 | /* Number of attributes */ | |
98bfdba5 PA |
851 | unsigned char num_attrs; |
852 | ||
853 | /* True if we're presently building the full type name for the | |
854 | type derived from this DIE. */ | |
855 | unsigned char building_fullname : 1; | |
76815b17 DE |
856 | |
857 | /* Abbrev number */ | |
858 | unsigned int abbrev; | |
859 | ||
93311388 | 860 | /* Offset in .debug_info or .debug_types section. */ |
b64f50a1 | 861 | sect_offset offset; |
78ba4af6 JB |
862 | |
863 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
864 | points to this die's parent; CHILD points to the first child of | |
865 | this node; and all the children of a given node are chained | |
4950bc1c | 866 | together via their SIBLING fields. */ |
639d11d3 DC |
867 | struct die_info *child; /* Its first child, if any. */ |
868 | struct die_info *sibling; /* Its next sibling, if any. */ | |
869 | struct die_info *parent; /* Its parent, if any. */ | |
c906108c | 870 | |
b60c80d6 DJ |
871 | /* An array of attributes, with NUM_ATTRS elements. There may be |
872 | zero, but it's not common and zero-sized arrays are not | |
873 | sufficiently portable C. */ | |
874 | struct attribute attrs[1]; | |
c906108c SS |
875 | }; |
876 | ||
0963b4bd | 877 | /* Get at parts of an attribute structure. */ |
c906108c SS |
878 | |
879 | #define DW_STRING(attr) ((attr)->u.str) | |
8285870a | 880 | #define DW_STRING_IS_CANONICAL(attr) ((attr)->string_is_canonical) |
c906108c SS |
881 | #define DW_UNSND(attr) ((attr)->u.unsnd) |
882 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
883 | #define DW_SND(attr) ((attr)->u.snd) | |
884 | #define DW_ADDR(attr) ((attr)->u.addr) | |
348e048f | 885 | #define DW_SIGNATURED_TYPE(attr) ((attr)->u.signatured_type) |
c906108c | 886 | |
0963b4bd | 887 | /* Blocks are a bunch of untyped bytes. */ |
c906108c SS |
888 | struct dwarf_block |
889 | { | |
890 | unsigned int size; | |
1d6edc3c JK |
891 | |
892 | /* Valid only if SIZE is not zero. */ | |
fe1b8b76 | 893 | gdb_byte *data; |
c906108c SS |
894 | }; |
895 | ||
c906108c SS |
896 | #ifndef ATTR_ALLOC_CHUNK |
897 | #define ATTR_ALLOC_CHUNK 4 | |
898 | #endif | |
899 | ||
c906108c SS |
900 | /* Allocate fields for structs, unions and enums in this size. */ |
901 | #ifndef DW_FIELD_ALLOC_CHUNK | |
902 | #define DW_FIELD_ALLOC_CHUNK 4 | |
903 | #endif | |
904 | ||
c906108c SS |
905 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
906 | but this would require a corresponding change in unpack_field_as_long | |
907 | and friends. */ | |
908 | static int bits_per_byte = 8; | |
909 | ||
910 | /* The routines that read and process dies for a C struct or C++ class | |
911 | pass lists of data member fields and lists of member function fields | |
912 | in an instance of a field_info structure, as defined below. */ | |
913 | struct field_info | |
c5aa993b | 914 | { |
0963b4bd | 915 | /* List of data member and baseclasses fields. */ |
c5aa993b JM |
916 | struct nextfield |
917 | { | |
918 | struct nextfield *next; | |
919 | int accessibility; | |
920 | int virtuality; | |
921 | struct field field; | |
922 | } | |
7d0ccb61 | 923 | *fields, *baseclasses; |
c906108c | 924 | |
7d0ccb61 | 925 | /* Number of fields (including baseclasses). */ |
c5aa993b | 926 | int nfields; |
c906108c | 927 | |
c5aa993b JM |
928 | /* Number of baseclasses. */ |
929 | int nbaseclasses; | |
c906108c | 930 | |
c5aa993b JM |
931 | /* Set if the accesibility of one of the fields is not public. */ |
932 | int non_public_fields; | |
c906108c | 933 | |
c5aa993b JM |
934 | /* Member function fields array, entries are allocated in the order they |
935 | are encountered in the object file. */ | |
936 | struct nextfnfield | |
937 | { | |
938 | struct nextfnfield *next; | |
939 | struct fn_field fnfield; | |
940 | } | |
941 | *fnfields; | |
c906108c | 942 | |
c5aa993b JM |
943 | /* Member function fieldlist array, contains name of possibly overloaded |
944 | member function, number of overloaded member functions and a pointer | |
945 | to the head of the member function field chain. */ | |
946 | struct fnfieldlist | |
947 | { | |
948 | char *name; | |
949 | int length; | |
950 | struct nextfnfield *head; | |
951 | } | |
952 | *fnfieldlists; | |
c906108c | 953 | |
c5aa993b JM |
954 | /* Number of entries in the fnfieldlists array. */ |
955 | int nfnfields; | |
98751a41 JK |
956 | |
957 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
958 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
959 | struct typedef_field_list | |
960 | { | |
961 | struct typedef_field field; | |
962 | struct typedef_field_list *next; | |
963 | } | |
964 | *typedef_field_list; | |
965 | unsigned typedef_field_list_count; | |
c5aa993b | 966 | }; |
c906108c | 967 | |
10b3939b DJ |
968 | /* One item on the queue of compilation units to read in full symbols |
969 | for. */ | |
970 | struct dwarf2_queue_item | |
971 | { | |
972 | struct dwarf2_per_cu_data *per_cu; | |
95554aad | 973 | enum language pretend_language; |
10b3939b DJ |
974 | struct dwarf2_queue_item *next; |
975 | }; | |
976 | ||
977 | /* The current queue. */ | |
978 | static struct dwarf2_queue_item *dwarf2_queue, *dwarf2_queue_tail; | |
979 | ||
ae038cb0 DJ |
980 | /* Loaded secondary compilation units are kept in memory until they |
981 | have not been referenced for the processing of this many | |
982 | compilation units. Set this to zero to disable caching. Cache | |
983 | sizes of up to at least twenty will improve startup time for | |
984 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
985 | static int dwarf2_max_cache_age = 5; | |
920d2a44 AC |
986 | static void |
987 | show_dwarf2_max_cache_age (struct ui_file *file, int from_tty, | |
988 | struct cmd_list_element *c, const char *value) | |
989 | { | |
3e43a32a MS |
990 | fprintf_filtered (file, _("The upper bound on the age of cached " |
991 | "dwarf2 compilation units is %s.\n"), | |
920d2a44 AC |
992 | value); |
993 | } | |
994 | ||
ae038cb0 | 995 | |
0963b4bd | 996 | /* Various complaints about symbol reading that don't abort the process. */ |
c906108c | 997 | |
4d3c2250 KB |
998 | static void |
999 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
2e276125 | 1000 | { |
4d3c2250 | 1001 | complaint (&symfile_complaints, |
e2e0b3e5 | 1002 | _("statement list doesn't fit in .debug_line section")); |
4d3c2250 KB |
1003 | } |
1004 | ||
25e43795 DJ |
1005 | static void |
1006 | dwarf2_debug_line_missing_file_complaint (void) | |
1007 | { | |
1008 | complaint (&symfile_complaints, | |
1009 | _(".debug_line section has line data without a file")); | |
1010 | } | |
1011 | ||
59205f5a JB |
1012 | static void |
1013 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
1014 | { | |
1015 | complaint (&symfile_complaints, | |
3e43a32a MS |
1016 | _(".debug_line section has line " |
1017 | "program sequence without an end")); | |
59205f5a JB |
1018 | } |
1019 | ||
4d3c2250 KB |
1020 | static void |
1021 | dwarf2_complex_location_expr_complaint (void) | |
2e276125 | 1022 | { |
e2e0b3e5 | 1023 | complaint (&symfile_complaints, _("location expression too complex")); |
4d3c2250 KB |
1024 | } |
1025 | ||
4d3c2250 KB |
1026 | static void |
1027 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
1028 | int arg3) | |
2e276125 | 1029 | { |
4d3c2250 | 1030 | complaint (&symfile_complaints, |
3e43a32a MS |
1031 | _("const value length mismatch for '%s', got %d, expected %d"), |
1032 | arg1, arg2, arg3); | |
4d3c2250 KB |
1033 | } |
1034 | ||
1035 | static void | |
f664829e | 1036 | dwarf2_section_buffer_overflow_complaint (struct dwarf2_section_info *section) |
2e276125 | 1037 | { |
4d3c2250 | 1038 | complaint (&symfile_complaints, |
f664829e DE |
1039 | _("debug info runs off end of %s section" |
1040 | " [in module %s]"), | |
1041 | section->asection->name, | |
1042 | bfd_get_filename (section->asection->owner)); | |
4d3c2250 KB |
1043 | } |
1044 | ||
1045 | static void | |
1046 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
8e19ed76 | 1047 | { |
4d3c2250 | 1048 | complaint (&symfile_complaints, |
3e43a32a MS |
1049 | _("macro debug info contains a " |
1050 | "malformed macro definition:\n`%s'"), | |
4d3c2250 KB |
1051 | arg1); |
1052 | } | |
1053 | ||
1054 | static void | |
1055 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
8b2dbe47 | 1056 | { |
4d3c2250 | 1057 | complaint (&symfile_complaints, |
3e43a32a MS |
1058 | _("invalid attribute class or form for '%s' in '%s'"), |
1059 | arg1, arg2); | |
4d3c2250 | 1060 | } |
c906108c | 1061 | |
c906108c SS |
1062 | /* local function prototypes */ |
1063 | ||
4efb68b1 | 1064 | static void dwarf2_locate_sections (bfd *, asection *, void *); |
c906108c | 1065 | |
aaa75496 JB |
1066 | static void dwarf2_create_include_psymtab (char *, struct partial_symtab *, |
1067 | struct objfile *); | |
1068 | ||
918dd910 JK |
1069 | static void dwarf2_find_base_address (struct die_info *die, |
1070 | struct dwarf2_cu *cu); | |
1071 | ||
c67a9c90 | 1072 | static void dwarf2_build_psymtabs_hard (struct objfile *); |
c906108c | 1073 | |
72bf9492 DJ |
1074 | static void scan_partial_symbols (struct partial_die_info *, |
1075 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 1076 | int, struct dwarf2_cu *); |
c906108c | 1077 | |
72bf9492 DJ |
1078 | static void add_partial_symbol (struct partial_die_info *, |
1079 | struct dwarf2_cu *); | |
63d06c5c | 1080 | |
72bf9492 DJ |
1081 | static void add_partial_namespace (struct partial_die_info *pdi, |
1082 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1083 | int need_pc, struct dwarf2_cu *cu); |
63d06c5c | 1084 | |
5d7cb8df JK |
1085 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
1086 | CORE_ADDR *highpc, int need_pc, | |
1087 | struct dwarf2_cu *cu); | |
1088 | ||
72bf9492 DJ |
1089 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
1090 | struct dwarf2_cu *cu); | |
91c24f0a | 1091 | |
bc30ff58 JB |
1092 | static void add_partial_subprogram (struct partial_die_info *pdi, |
1093 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1094 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 1095 | |
a14ed312 | 1096 | static void dwarf2_psymtab_to_symtab (struct partial_symtab *); |
c906108c | 1097 | |
a14ed312 | 1098 | static void psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 1099 | |
433df2d4 DE |
1100 | static struct abbrev_info *abbrev_table_lookup_abbrev |
1101 | (const struct abbrev_table *, unsigned int); | |
1102 | ||
1103 | static struct abbrev_table *abbrev_table_read_table | |
1104 | (struct dwarf2_section_info *, sect_offset); | |
1105 | ||
1106 | static void abbrev_table_free (struct abbrev_table *); | |
1107 | ||
dee91e82 DE |
1108 | static void dwarf2_read_abbrevs (struct dwarf2_cu *, |
1109 | struct dwarf2_section_info *); | |
c906108c | 1110 | |
f3dd6933 | 1111 | static void dwarf2_free_abbrev_table (void *); |
c906108c | 1112 | |
6caca83c CC |
1113 | static unsigned int peek_abbrev_code (bfd *, gdb_byte *); |
1114 | ||
dee91e82 DE |
1115 | static struct partial_die_info *load_partial_dies |
1116 | (const struct die_reader_specs *, gdb_byte *, int); | |
72bf9492 | 1117 | |
dee91e82 DE |
1118 | static gdb_byte *read_partial_die (const struct die_reader_specs *, |
1119 | struct partial_die_info *, | |
1120 | struct abbrev_info *, | |
1121 | unsigned int, | |
1122 | gdb_byte *); | |
c906108c | 1123 | |
b64f50a1 | 1124 | static struct partial_die_info *find_partial_die (sect_offset, |
10b3939b | 1125 | struct dwarf2_cu *); |
72bf9492 DJ |
1126 | |
1127 | static void fixup_partial_die (struct partial_die_info *, | |
1128 | struct dwarf2_cu *); | |
1129 | ||
dee91e82 DE |
1130 | static gdb_byte *read_attribute (const struct die_reader_specs *, |
1131 | struct attribute *, struct attr_abbrev *, | |
1132 | gdb_byte *); | |
a8329558 | 1133 | |
fe1b8b76 | 1134 | static unsigned int read_1_byte (bfd *, gdb_byte *); |
c906108c | 1135 | |
fe1b8b76 | 1136 | static int read_1_signed_byte (bfd *, gdb_byte *); |
c906108c | 1137 | |
fe1b8b76 | 1138 | static unsigned int read_2_bytes (bfd *, gdb_byte *); |
c906108c | 1139 | |
fe1b8b76 | 1140 | static unsigned int read_4_bytes (bfd *, gdb_byte *); |
c906108c | 1141 | |
93311388 | 1142 | static ULONGEST read_8_bytes (bfd *, gdb_byte *); |
c906108c | 1143 | |
fe1b8b76 | 1144 | static CORE_ADDR read_address (bfd *, gdb_byte *ptr, struct dwarf2_cu *, |
891d2f0b | 1145 | unsigned int *); |
c906108c | 1146 | |
c764a876 DE |
1147 | static LONGEST read_initial_length (bfd *, gdb_byte *, unsigned int *); |
1148 | ||
1149 | static LONGEST read_checked_initial_length_and_offset | |
1150 | (bfd *, gdb_byte *, const struct comp_unit_head *, | |
1151 | unsigned int *, unsigned int *); | |
613e1657 | 1152 | |
fe1b8b76 | 1153 | static LONGEST read_offset (bfd *, gdb_byte *, const struct comp_unit_head *, |
c764a876 DE |
1154 | unsigned int *); |
1155 | ||
1156 | static LONGEST read_offset_1 (bfd *, gdb_byte *, unsigned int); | |
613e1657 | 1157 | |
fe1b8b76 | 1158 | static gdb_byte *read_n_bytes (bfd *, gdb_byte *, unsigned int); |
c906108c | 1159 | |
9b1c24c8 | 1160 | static char *read_direct_string (bfd *, gdb_byte *, unsigned int *); |
c906108c | 1161 | |
fe1b8b76 JB |
1162 | static char *read_indirect_string (bfd *, gdb_byte *, |
1163 | const struct comp_unit_head *, | |
1164 | unsigned int *); | |
4bdf3d34 | 1165 | |
12df843f | 1166 | static ULONGEST read_unsigned_leb128 (bfd *, gdb_byte *, unsigned int *); |
c906108c | 1167 | |
12df843f | 1168 | static LONGEST read_signed_leb128 (bfd *, gdb_byte *, unsigned int *); |
c906108c | 1169 | |
3019eac3 DE |
1170 | static CORE_ADDR read_addr_index_from_leb128 (struct dwarf2_cu *, gdb_byte *, |
1171 | unsigned int *); | |
1172 | ||
1173 | static char *read_str_index (const struct die_reader_specs *reader, | |
1174 | struct dwarf2_cu *cu, ULONGEST str_index); | |
1175 | ||
e142c38c | 1176 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 1177 | |
e142c38c DJ |
1178 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
1179 | struct dwarf2_cu *); | |
c906108c | 1180 | |
348e048f DE |
1181 | static struct attribute *dwarf2_attr_no_follow (struct die_info *, |
1182 | unsigned int, | |
1183 | struct dwarf2_cu *); | |
1184 | ||
05cf31d1 JB |
1185 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
1186 | struct dwarf2_cu *cu); | |
1187 | ||
e142c38c | 1188 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1189 | |
e142c38c | 1190 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1191 | struct dwarf2_cu **); |
63d06c5c | 1192 | |
debd256d JB |
1193 | static void free_line_header (struct line_header *lh); |
1194 | ||
aaa75496 JB |
1195 | static void add_file_name (struct line_header *, char *, unsigned int, |
1196 | unsigned int, unsigned int); | |
1197 | ||
3019eac3 DE |
1198 | static struct line_header *dwarf_decode_line_header (unsigned int offset, |
1199 | struct dwarf2_cu *cu); | |
debd256d | 1200 | |
f3f5162e DE |
1201 | static void dwarf_decode_lines (struct line_header *, const char *, |
1202 | struct dwarf2_cu *, struct partial_symtab *, | |
1203 | int); | |
c906108c | 1204 | |
72b9f47f | 1205 | static void dwarf2_start_subfile (char *, const char *, const char *); |
c906108c | 1206 | |
a14ed312 | 1207 | static struct symbol *new_symbol (struct die_info *, struct type *, |
e7c27a73 | 1208 | struct dwarf2_cu *); |
c906108c | 1209 | |
34eaf542 TT |
1210 | static struct symbol *new_symbol_full (struct die_info *, struct type *, |
1211 | struct dwarf2_cu *, struct symbol *); | |
1212 | ||
a14ed312 | 1213 | static void dwarf2_const_value (struct attribute *, struct symbol *, |
e7c27a73 | 1214 | struct dwarf2_cu *); |
c906108c | 1215 | |
98bfdba5 PA |
1216 | static void dwarf2_const_value_attr (struct attribute *attr, |
1217 | struct type *type, | |
1218 | const char *name, | |
1219 | struct obstack *obstack, | |
12df843f | 1220 | struct dwarf2_cu *cu, LONGEST *value, |
98bfdba5 PA |
1221 | gdb_byte **bytes, |
1222 | struct dwarf2_locexpr_baton **baton); | |
2df3850c | 1223 | |
e7c27a73 | 1224 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1225 | |
b4ba55a1 JB |
1226 | static int need_gnat_info (struct dwarf2_cu *); |
1227 | ||
3e43a32a MS |
1228 | static struct type *die_descriptive_type (struct die_info *, |
1229 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1230 | |
1231 | static void set_descriptive_type (struct type *, struct die_info *, | |
1232 | struct dwarf2_cu *); | |
1233 | ||
e7c27a73 DJ |
1234 | static struct type *die_containing_type (struct die_info *, |
1235 | struct dwarf2_cu *); | |
c906108c | 1236 | |
673bfd45 DE |
1237 | static struct type *lookup_die_type (struct die_info *, struct attribute *, |
1238 | struct dwarf2_cu *); | |
c906108c | 1239 | |
f792889a | 1240 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1241 | |
673bfd45 DE |
1242 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1243 | ||
0d5cff50 | 1244 | static const char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1245 | |
6e70227d | 1246 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1247 | const char *suffix, int physname, |
1248 | struct dwarf2_cu *cu); | |
63d06c5c | 1249 | |
e7c27a73 | 1250 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1251 | |
348e048f DE |
1252 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1253 | ||
e7c27a73 | 1254 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1255 | |
e7c27a73 | 1256 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1257 | |
96408a79 SA |
1258 | static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu); |
1259 | ||
ff013f42 JK |
1260 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
1261 | struct dwarf2_cu *, struct partial_symtab *); | |
1262 | ||
a14ed312 | 1263 | static int dwarf2_get_pc_bounds (struct die_info *, |
d85a05f0 DJ |
1264 | CORE_ADDR *, CORE_ADDR *, struct dwarf2_cu *, |
1265 | struct partial_symtab *); | |
c906108c | 1266 | |
fae299cd DC |
1267 | static void get_scope_pc_bounds (struct die_info *, |
1268 | CORE_ADDR *, CORE_ADDR *, | |
1269 | struct dwarf2_cu *); | |
1270 | ||
801e3a5b JB |
1271 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
1272 | CORE_ADDR, struct dwarf2_cu *); | |
1273 | ||
a14ed312 | 1274 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1275 | struct dwarf2_cu *); |
c906108c | 1276 | |
a14ed312 | 1277 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1278 | struct type *, struct dwarf2_cu *); |
c906108c | 1279 | |
a14ed312 | 1280 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1281 | struct die_info *, struct type *, |
e7c27a73 | 1282 | struct dwarf2_cu *); |
c906108c | 1283 | |
a14ed312 | 1284 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1285 | struct type *, |
1286 | struct dwarf2_cu *); | |
c906108c | 1287 | |
134d01f1 | 1288 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1289 | |
e7c27a73 | 1290 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1291 | |
e7c27a73 | 1292 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1293 | |
5d7cb8df JK |
1294 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1295 | ||
27aa8d6a SW |
1296 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1297 | ||
f55ee35c JK |
1298 | static struct type *read_module_type (struct die_info *die, |
1299 | struct dwarf2_cu *cu); | |
1300 | ||
38d518c9 | 1301 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1302 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1303 | |
134d01f1 | 1304 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1305 | |
e7c27a73 | 1306 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 1307 | |
6e70227d | 1308 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1309 | struct dwarf2_cu *); |
1310 | ||
dee91e82 | 1311 | static struct die_info *read_die_and_children (const struct die_reader_specs *, |
93311388 | 1312 | gdb_byte *info_ptr, |
fe1b8b76 | 1313 | gdb_byte **new_info_ptr, |
639d11d3 DC |
1314 | struct die_info *parent); |
1315 | ||
dee91e82 | 1316 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *, |
93311388 | 1317 | gdb_byte *info_ptr, |
fe1b8b76 | 1318 | gdb_byte **new_info_ptr, |
639d11d3 DC |
1319 | struct die_info *parent); |
1320 | ||
3019eac3 DE |
1321 | static gdb_byte *read_full_die_1 (const struct die_reader_specs *, |
1322 | struct die_info **, gdb_byte *, int *, int); | |
1323 | ||
dee91e82 DE |
1324 | static gdb_byte *read_full_die (const struct die_reader_specs *, |
1325 | struct die_info **, gdb_byte *, int *); | |
93311388 | 1326 | |
e7c27a73 | 1327 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1328 | |
71c25dea TT |
1329 | static char *dwarf2_canonicalize_name (char *, struct dwarf2_cu *, |
1330 | struct obstack *); | |
1331 | ||
e142c38c | 1332 | static char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1333 | |
98bfdba5 PA |
1334 | static const char *dwarf2_full_name (char *name, |
1335 | struct die_info *die, | |
1336 | struct dwarf2_cu *cu); | |
1337 | ||
e142c38c | 1338 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1339 | struct dwarf2_cu **); |
9219021c | 1340 | |
f39c6ffd | 1341 | static const char *dwarf_tag_name (unsigned int); |
c906108c | 1342 | |
f39c6ffd | 1343 | static const char *dwarf_attr_name (unsigned int); |
c906108c | 1344 | |
f39c6ffd | 1345 | static const char *dwarf_form_name (unsigned int); |
c906108c | 1346 | |
a14ed312 | 1347 | static char *dwarf_bool_name (unsigned int); |
c906108c | 1348 | |
f39c6ffd | 1349 | static const char *dwarf_type_encoding_name (unsigned int); |
c906108c | 1350 | |
f9aca02d | 1351 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 1352 | |
d97bc12b DE |
1353 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1354 | ||
1355 | static void dump_die_for_error (struct die_info *); | |
1356 | ||
1357 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1358 | struct die_info *); | |
c906108c | 1359 | |
d97bc12b | 1360 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1361 | |
51545339 | 1362 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1363 | struct dwarf2_cu *); |
c906108c | 1364 | |
93311388 DE |
1365 | static int is_ref_attr (struct attribute *); |
1366 | ||
b64f50a1 | 1367 | static sect_offset dwarf2_get_ref_die_offset (struct attribute *); |
c906108c | 1368 | |
43bbcdc2 | 1369 | static LONGEST dwarf2_get_attr_constant_value (struct attribute *, int); |
a02abb62 | 1370 | |
348e048f DE |
1371 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
1372 | struct attribute *, | |
1373 | struct dwarf2_cu **); | |
1374 | ||
10b3939b DJ |
1375 | static struct die_info *follow_die_ref (struct die_info *, |
1376 | struct attribute *, | |
f2f0e013 | 1377 | struct dwarf2_cu **); |
c906108c | 1378 | |
348e048f DE |
1379 | static struct die_info *follow_die_sig (struct die_info *, |
1380 | struct attribute *, | |
1381 | struct dwarf2_cu **); | |
1382 | ||
6c83ed52 TT |
1383 | static struct signatured_type *lookup_signatured_type_at_offset |
1384 | (struct objfile *objfile, | |
b64f50a1 | 1385 | struct dwarf2_section_info *section, sect_offset offset); |
6c83ed52 | 1386 | |
e5fe5e75 | 1387 | static void load_full_type_unit (struct dwarf2_per_cu_data *per_cu); |
348e048f | 1388 | |
52dc124a | 1389 | static void read_signatured_type (struct signatured_type *); |
348e048f | 1390 | |
c906108c SS |
1391 | /* memory allocation interface */ |
1392 | ||
7b5a2f43 | 1393 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1394 | |
b60c80d6 | 1395 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1396 | |
09262596 DE |
1397 | static void dwarf_decode_macros (struct dwarf2_cu *, unsigned int, |
1398 | char *, int); | |
2e276125 | 1399 | |
8e19ed76 PS |
1400 | static int attr_form_is_block (struct attribute *); |
1401 | ||
3690dd37 JB |
1402 | static int attr_form_is_section_offset (struct attribute *); |
1403 | ||
1404 | static int attr_form_is_constant (struct attribute *); | |
1405 | ||
8cf6f0b1 TT |
1406 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
1407 | struct dwarf2_loclist_baton *baton, | |
1408 | struct attribute *attr); | |
1409 | ||
93e7bd98 DJ |
1410 | static void dwarf2_symbol_mark_computed (struct attribute *attr, |
1411 | struct symbol *sym, | |
1412 | struct dwarf2_cu *cu); | |
4c2df51b | 1413 | |
dee91e82 DE |
1414 | static gdb_byte *skip_one_die (const struct die_reader_specs *reader, |
1415 | gdb_byte *info_ptr, | |
1416 | struct abbrev_info *abbrev); | |
4bb7a0a7 | 1417 | |
72bf9492 DJ |
1418 | static void free_stack_comp_unit (void *); |
1419 | ||
72bf9492 DJ |
1420 | static hashval_t partial_die_hash (const void *item); |
1421 | ||
1422 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1423 | ||
ae038cb0 | 1424 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
b64f50a1 | 1425 | (sect_offset offset, struct objfile *objfile); |
ae038cb0 | 1426 | |
9816fde3 | 1427 | static void init_one_comp_unit (struct dwarf2_cu *cu, |
23745b47 | 1428 | struct dwarf2_per_cu_data *per_cu); |
9816fde3 JK |
1429 | |
1430 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, | |
95554aad TT |
1431 | struct die_info *comp_unit_die, |
1432 | enum language pretend_language); | |
93311388 | 1433 | |
68dc6402 | 1434 | static void free_heap_comp_unit (void *); |
ae038cb0 DJ |
1435 | |
1436 | static void free_cached_comp_units (void *); | |
1437 | ||
1438 | static void age_cached_comp_units (void); | |
1439 | ||
dee91e82 | 1440 | static void free_one_cached_comp_unit (struct dwarf2_per_cu_data *); |
ae038cb0 | 1441 | |
f792889a DJ |
1442 | static struct type *set_die_type (struct die_info *, struct type *, |
1443 | struct dwarf2_cu *); | |
1c379e20 | 1444 | |
ae038cb0 DJ |
1445 | static void create_all_comp_units (struct objfile *); |
1446 | ||
0e50663e | 1447 | static int create_all_type_units (struct objfile *); |
1fd400ff | 1448 | |
95554aad TT |
1449 | static void load_full_comp_unit (struct dwarf2_per_cu_data *, |
1450 | enum language); | |
10b3939b | 1451 | |
95554aad TT |
1452 | static void process_full_comp_unit (struct dwarf2_per_cu_data *, |
1453 | enum language); | |
10b3939b DJ |
1454 | |
1455 | static void dwarf2_add_dependence (struct dwarf2_cu *, | |
1456 | struct dwarf2_per_cu_data *); | |
1457 | ||
ae038cb0 DJ |
1458 | static void dwarf2_mark (struct dwarf2_cu *); |
1459 | ||
1460 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1461 | ||
b64f50a1 | 1462 | static struct type *get_die_type_at_offset (sect_offset, |
673bfd45 DE |
1463 | struct dwarf2_per_cu_data *per_cu); |
1464 | ||
f792889a | 1465 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1466 | |
9291a0cd TT |
1467 | static void dwarf2_release_queue (void *dummy); |
1468 | ||
95554aad TT |
1469 | static void queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
1470 | enum language pretend_language); | |
1471 | ||
1472 | static int maybe_queue_comp_unit (struct dwarf2_cu *this_cu, | |
1473 | struct dwarf2_per_cu_data *per_cu, | |
1474 | enum language pretend_language); | |
9291a0cd | 1475 | |
a0f42c21 | 1476 | static void process_queue (void); |
9291a0cd TT |
1477 | |
1478 | static void find_file_and_directory (struct die_info *die, | |
1479 | struct dwarf2_cu *cu, | |
1480 | char **name, char **comp_dir); | |
1481 | ||
1482 | static char *file_full_name (int file, struct line_header *lh, | |
1483 | const char *comp_dir); | |
1484 | ||
fd820528 DE |
1485 | static void init_cutu_and_read_dies |
1486 | (struct dwarf2_per_cu_data *this_cu, int use_existing_cu, int keep, | |
3019eac3 DE |
1487 | die_reader_func_ftype *die_reader_func, void *data); |
1488 | ||
dee91e82 DE |
1489 | static void init_cutu_and_read_dies_simple |
1490 | (struct dwarf2_per_cu_data *this_cu, | |
1491 | die_reader_func_ftype *die_reader_func, void *data); | |
9291a0cd | 1492 | |
673bfd45 | 1493 | static htab_t allocate_signatured_type_table (struct objfile *objfile); |
1fd400ff | 1494 | |
95554aad | 1495 | static void process_psymtab_comp_unit (struct dwarf2_per_cu_data *, int); |
dee91e82 | 1496 | |
3019eac3 DE |
1497 | static htab_t allocate_dwo_unit_table (struct objfile *objfile); |
1498 | ||
1499 | static struct dwo_unit *lookup_dwo_comp_unit | |
1500 | (struct dwarf2_per_cu_data *, char *, const char *, ULONGEST); | |
1501 | ||
1502 | static struct dwo_unit *lookup_dwo_type_unit | |
1503 | (struct signatured_type *, char *, const char *); | |
1504 | ||
1505 | static void free_dwo_file_cleanup (void *); | |
1506 | ||
1507 | static void munmap_section_buffer (struct dwarf2_section_info *); | |
1508 | ||
95554aad TT |
1509 | static void process_cu_includes (void); |
1510 | ||
9291a0cd TT |
1511 | #if WORDS_BIGENDIAN |
1512 | ||
1513 | /* Convert VALUE between big- and little-endian. */ | |
1514 | static offset_type | |
1515 | byte_swap (offset_type value) | |
1516 | { | |
1517 | offset_type result; | |
1518 | ||
1519 | result = (value & 0xff) << 24; | |
1520 | result |= (value & 0xff00) << 8; | |
1521 | result |= (value & 0xff0000) >> 8; | |
1522 | result |= (value & 0xff000000) >> 24; | |
1523 | return result; | |
1524 | } | |
1525 | ||
1526 | #define MAYBE_SWAP(V) byte_swap (V) | |
1527 | ||
1528 | #else | |
1529 | #define MAYBE_SWAP(V) (V) | |
1530 | #endif /* WORDS_BIGENDIAN */ | |
1531 | ||
1532 | /* The suffix for an index file. */ | |
1533 | #define INDEX_SUFFIX ".gdb-index" | |
1534 | ||
3da10d80 KS |
1535 | static const char *dwarf2_physname (char *name, struct die_info *die, |
1536 | struct dwarf2_cu *cu); | |
1537 | ||
c906108c | 1538 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
1539 | information and return true if we have enough to do something. |
1540 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
1541 | ELF names are used. */ | |
c906108c SS |
1542 | |
1543 | int | |
251d32d9 TG |
1544 | dwarf2_has_info (struct objfile *objfile, |
1545 | const struct dwarf2_debug_sections *names) | |
c906108c | 1546 | { |
be391dca TT |
1547 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); |
1548 | if (!dwarf2_per_objfile) | |
1549 | { | |
1550 | /* Initialize per-objfile state. */ | |
1551 | struct dwarf2_per_objfile *data | |
1552 | = obstack_alloc (&objfile->objfile_obstack, sizeof (*data)); | |
9a619af0 | 1553 | |
be391dca TT |
1554 | memset (data, 0, sizeof (*data)); |
1555 | set_objfile_data (objfile, dwarf2_objfile_data_key, data); | |
1556 | dwarf2_per_objfile = data; | |
6502dd73 | 1557 | |
251d32d9 TG |
1558 | bfd_map_over_sections (objfile->obfd, dwarf2_locate_sections, |
1559 | (void *) names); | |
be391dca TT |
1560 | dwarf2_per_objfile->objfile = objfile; |
1561 | } | |
1562 | return (dwarf2_per_objfile->info.asection != NULL | |
1563 | && dwarf2_per_objfile->abbrev.asection != NULL); | |
c906108c SS |
1564 | } |
1565 | ||
251d32d9 TG |
1566 | /* When loading sections, we look either for uncompressed section or for |
1567 | compressed section names. */ | |
233a11ab CS |
1568 | |
1569 | static int | |
251d32d9 TG |
1570 | section_is_p (const char *section_name, |
1571 | const struct dwarf2_section_names *names) | |
233a11ab | 1572 | { |
251d32d9 TG |
1573 | if (names->normal != NULL |
1574 | && strcmp (section_name, names->normal) == 0) | |
1575 | return 1; | |
1576 | if (names->compressed != NULL | |
1577 | && strcmp (section_name, names->compressed) == 0) | |
1578 | return 1; | |
1579 | return 0; | |
233a11ab CS |
1580 | } |
1581 | ||
c906108c SS |
1582 | /* This function is mapped across the sections and remembers the |
1583 | offset and size of each of the debugging sections we are interested | |
1584 | in. */ | |
1585 | ||
1586 | static void | |
251d32d9 | 1587 | dwarf2_locate_sections (bfd *abfd, asection *sectp, void *vnames) |
c906108c | 1588 | { |
251d32d9 TG |
1589 | const struct dwarf2_debug_sections *names; |
1590 | ||
1591 | if (vnames == NULL) | |
1592 | names = &dwarf2_elf_names; | |
1593 | else | |
1594 | names = (const struct dwarf2_debug_sections *) vnames; | |
1595 | ||
1596 | if (section_is_p (sectp->name, &names->info)) | |
c906108c | 1597 | { |
dce234bc PP |
1598 | dwarf2_per_objfile->info.asection = sectp; |
1599 | dwarf2_per_objfile->info.size = bfd_get_section_size (sectp); | |
c906108c | 1600 | } |
251d32d9 | 1601 | else if (section_is_p (sectp->name, &names->abbrev)) |
c906108c | 1602 | { |
dce234bc PP |
1603 | dwarf2_per_objfile->abbrev.asection = sectp; |
1604 | dwarf2_per_objfile->abbrev.size = bfd_get_section_size (sectp); | |
c906108c | 1605 | } |
251d32d9 | 1606 | else if (section_is_p (sectp->name, &names->line)) |
c906108c | 1607 | { |
dce234bc PP |
1608 | dwarf2_per_objfile->line.asection = sectp; |
1609 | dwarf2_per_objfile->line.size = bfd_get_section_size (sectp); | |
c906108c | 1610 | } |
251d32d9 | 1611 | else if (section_is_p (sectp->name, &names->loc)) |
c906108c | 1612 | { |
dce234bc PP |
1613 | dwarf2_per_objfile->loc.asection = sectp; |
1614 | dwarf2_per_objfile->loc.size = bfd_get_section_size (sectp); | |
c906108c | 1615 | } |
251d32d9 | 1616 | else if (section_is_p (sectp->name, &names->macinfo)) |
c906108c | 1617 | { |
dce234bc PP |
1618 | dwarf2_per_objfile->macinfo.asection = sectp; |
1619 | dwarf2_per_objfile->macinfo.size = bfd_get_section_size (sectp); | |
c906108c | 1620 | } |
cf2c3c16 TT |
1621 | else if (section_is_p (sectp->name, &names->macro)) |
1622 | { | |
1623 | dwarf2_per_objfile->macro.asection = sectp; | |
1624 | dwarf2_per_objfile->macro.size = bfd_get_section_size (sectp); | |
1625 | } | |
251d32d9 | 1626 | else if (section_is_p (sectp->name, &names->str)) |
c906108c | 1627 | { |
dce234bc PP |
1628 | dwarf2_per_objfile->str.asection = sectp; |
1629 | dwarf2_per_objfile->str.size = bfd_get_section_size (sectp); | |
c906108c | 1630 | } |
3019eac3 DE |
1631 | else if (section_is_p (sectp->name, &names->addr)) |
1632 | { | |
1633 | dwarf2_per_objfile->addr.asection = sectp; | |
1634 | dwarf2_per_objfile->addr.size = bfd_get_section_size (sectp); | |
1635 | } | |
251d32d9 | 1636 | else if (section_is_p (sectp->name, &names->frame)) |
b6af0555 | 1637 | { |
dce234bc PP |
1638 | dwarf2_per_objfile->frame.asection = sectp; |
1639 | dwarf2_per_objfile->frame.size = bfd_get_section_size (sectp); | |
b6af0555 | 1640 | } |
251d32d9 | 1641 | else if (section_is_p (sectp->name, &names->eh_frame)) |
b6af0555 | 1642 | { |
81b9b86e | 1643 | flagword aflag = bfd_get_section_flags (abfd, sectp); |
9a619af0 | 1644 | |
3799ccc6 EZ |
1645 | if (aflag & SEC_HAS_CONTENTS) |
1646 | { | |
dce234bc PP |
1647 | dwarf2_per_objfile->eh_frame.asection = sectp; |
1648 | dwarf2_per_objfile->eh_frame.size = bfd_get_section_size (sectp); | |
3799ccc6 | 1649 | } |
b6af0555 | 1650 | } |
251d32d9 | 1651 | else if (section_is_p (sectp->name, &names->ranges)) |
af34e669 | 1652 | { |
dce234bc PP |
1653 | dwarf2_per_objfile->ranges.asection = sectp; |
1654 | dwarf2_per_objfile->ranges.size = bfd_get_section_size (sectp); | |
af34e669 | 1655 | } |
251d32d9 | 1656 | else if (section_is_p (sectp->name, &names->types)) |
348e048f | 1657 | { |
8b70b953 TT |
1658 | struct dwarf2_section_info type_section; |
1659 | ||
1660 | memset (&type_section, 0, sizeof (type_section)); | |
1661 | type_section.asection = sectp; | |
1662 | type_section.size = bfd_get_section_size (sectp); | |
1663 | ||
1664 | VEC_safe_push (dwarf2_section_info_def, dwarf2_per_objfile->types, | |
1665 | &type_section); | |
348e048f | 1666 | } |
251d32d9 | 1667 | else if (section_is_p (sectp->name, &names->gdb_index)) |
9291a0cd TT |
1668 | { |
1669 | dwarf2_per_objfile->gdb_index.asection = sectp; | |
1670 | dwarf2_per_objfile->gdb_index.size = bfd_get_section_size (sectp); | |
1671 | } | |
dce234bc | 1672 | |
72dca2f5 FR |
1673 | if ((bfd_get_section_flags (abfd, sectp) & SEC_LOAD) |
1674 | && bfd_section_vma (abfd, sectp) == 0) | |
1675 | dwarf2_per_objfile->has_section_at_zero = 1; | |
c906108c SS |
1676 | } |
1677 | ||
dce234bc PP |
1678 | /* Decompress a section that was compressed using zlib. Store the |
1679 | decompressed buffer, and its size, in OUTBUF and OUTSIZE. */ | |
233a11ab CS |
1680 | |
1681 | static void | |
dce234bc PP |
1682 | zlib_decompress_section (struct objfile *objfile, asection *sectp, |
1683 | gdb_byte **outbuf, bfd_size_type *outsize) | |
1684 | { | |
3019eac3 | 1685 | bfd *abfd = sectp->owner; |
dce234bc PP |
1686 | #ifndef HAVE_ZLIB_H |
1687 | error (_("Support for zlib-compressed DWARF data (from '%s') " | |
1688 | "is disabled in this copy of GDB"), | |
1689 | bfd_get_filename (abfd)); | |
1690 | #else | |
1691 | bfd_size_type compressed_size = bfd_get_section_size (sectp); | |
1692 | gdb_byte *compressed_buffer = xmalloc (compressed_size); | |
affddf13 | 1693 | struct cleanup *cleanup = make_cleanup (xfree, compressed_buffer); |
dce234bc PP |
1694 | bfd_size_type uncompressed_size; |
1695 | gdb_byte *uncompressed_buffer; | |
1696 | z_stream strm; | |
1697 | int rc; | |
1698 | int header_size = 12; | |
1699 | ||
1700 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 | |
3e43a32a MS |
1701 | || bfd_bread (compressed_buffer, |
1702 | compressed_size, abfd) != compressed_size) | |
dce234bc PP |
1703 | error (_("Dwarf Error: Can't read DWARF data from '%s'"), |
1704 | bfd_get_filename (abfd)); | |
1705 | ||
1706 | /* Read the zlib header. In this case, it should be "ZLIB" followed | |
1707 | by the uncompressed section size, 8 bytes in big-endian order. */ | |
1708 | if (compressed_size < header_size | |
1709 | || strncmp (compressed_buffer, "ZLIB", 4) != 0) | |
1710 | error (_("Dwarf Error: Corrupt DWARF ZLIB header from '%s'"), | |
1711 | bfd_get_filename (abfd)); | |
1712 | uncompressed_size = compressed_buffer[4]; uncompressed_size <<= 8; | |
1713 | uncompressed_size += compressed_buffer[5]; uncompressed_size <<= 8; | |
1714 | uncompressed_size += compressed_buffer[6]; uncompressed_size <<= 8; | |
1715 | uncompressed_size += compressed_buffer[7]; uncompressed_size <<= 8; | |
1716 | uncompressed_size += compressed_buffer[8]; uncompressed_size <<= 8; | |
1717 | uncompressed_size += compressed_buffer[9]; uncompressed_size <<= 8; | |
1718 | uncompressed_size += compressed_buffer[10]; uncompressed_size <<= 8; | |
1719 | uncompressed_size += compressed_buffer[11]; | |
1720 | ||
1721 | /* It is possible the section consists of several compressed | |
1722 | buffers concatenated together, so we uncompress in a loop. */ | |
1723 | strm.zalloc = NULL; | |
1724 | strm.zfree = NULL; | |
1725 | strm.opaque = NULL; | |
1726 | strm.avail_in = compressed_size - header_size; | |
1727 | strm.next_in = (Bytef*) compressed_buffer + header_size; | |
1728 | strm.avail_out = uncompressed_size; | |
1729 | uncompressed_buffer = obstack_alloc (&objfile->objfile_obstack, | |
1730 | uncompressed_size); | |
1731 | rc = inflateInit (&strm); | |
1732 | while (strm.avail_in > 0) | |
1733 | { | |
1734 | if (rc != Z_OK) | |
1735 | error (_("Dwarf Error: setting up DWARF uncompression in '%s': %d"), | |
1736 | bfd_get_filename (abfd), rc); | |
1737 | strm.next_out = ((Bytef*) uncompressed_buffer | |
1738 | + (uncompressed_size - strm.avail_out)); | |
1739 | rc = inflate (&strm, Z_FINISH); | |
1740 | if (rc != Z_STREAM_END) | |
1741 | error (_("Dwarf Error: zlib error uncompressing from '%s': %d"), | |
1742 | bfd_get_filename (abfd), rc); | |
1743 | rc = inflateReset (&strm); | |
1744 | } | |
1745 | rc = inflateEnd (&strm); | |
1746 | if (rc != Z_OK | |
1747 | || strm.avail_out != 0) | |
1748 | error (_("Dwarf Error: concluding DWARF uncompression in '%s': %d"), | |
1749 | bfd_get_filename (abfd), rc); | |
1750 | ||
affddf13 | 1751 | do_cleanups (cleanup); |
dce234bc PP |
1752 | *outbuf = uncompressed_buffer; |
1753 | *outsize = uncompressed_size; | |
1754 | #endif | |
233a11ab CS |
1755 | } |
1756 | ||
fceca515 DE |
1757 | /* A helper function that decides whether a section is empty, |
1758 | or not present. */ | |
9e0ac564 TT |
1759 | |
1760 | static int | |
1761 | dwarf2_section_empty_p (struct dwarf2_section_info *info) | |
1762 | { | |
1763 | return info->asection == NULL || info->size == 0; | |
1764 | } | |
1765 | ||
3019eac3 DE |
1766 | /* Read the contents of the section INFO. |
1767 | OBJFILE is the main object file, but not necessarily the file where | |
1768 | the section comes from. E.g., for DWO files INFO->asection->owner | |
1769 | is the bfd of the DWO file. | |
dce234bc | 1770 | If the section is compressed, uncompress it before returning. */ |
c906108c | 1771 | |
dce234bc PP |
1772 | static void |
1773 | dwarf2_read_section (struct objfile *objfile, struct dwarf2_section_info *info) | |
c906108c | 1774 | { |
dce234bc | 1775 | asection *sectp = info->asection; |
3019eac3 | 1776 | bfd *abfd; |
dce234bc PP |
1777 | gdb_byte *buf, *retbuf; |
1778 | unsigned char header[4]; | |
c906108c | 1779 | |
be391dca TT |
1780 | if (info->readin) |
1781 | return; | |
dce234bc | 1782 | info->buffer = NULL; |
b315ab21 | 1783 | info->map_addr = NULL; |
be391dca | 1784 | info->readin = 1; |
188dd5d6 | 1785 | |
9e0ac564 | 1786 | if (dwarf2_section_empty_p (info)) |
dce234bc | 1787 | return; |
c906108c | 1788 | |
3019eac3 DE |
1789 | /* Note that ABFD may not be from OBJFILE, e.g. a DWO section. */ |
1790 | abfd = sectp->owner; | |
1791 | ||
dce234bc PP |
1792 | /* Check if the file has a 4-byte header indicating compression. */ |
1793 | if (info->size > sizeof (header) | |
1794 | && bfd_seek (abfd, sectp->filepos, SEEK_SET) == 0 | |
1795 | && bfd_bread (header, sizeof (header), abfd) == sizeof (header)) | |
1796 | { | |
1797 | /* Upon decompression, update the buffer and its size. */ | |
1798 | if (strncmp (header, "ZLIB", sizeof (header)) == 0) | |
1799 | { | |
1800 | zlib_decompress_section (objfile, sectp, &info->buffer, | |
1801 | &info->size); | |
1802 | return; | |
1803 | } | |
1804 | } | |
4bdf3d34 | 1805 | |
dce234bc PP |
1806 | #ifdef HAVE_MMAP |
1807 | if (pagesize == 0) | |
1808 | pagesize = getpagesize (); | |
2e276125 | 1809 | |
dce234bc PP |
1810 | /* Only try to mmap sections which are large enough: we don't want to |
1811 | waste space due to fragmentation. Also, only try mmap for sections | |
1812 | without relocations. */ | |
1813 | ||
1814 | if (info->size > 4 * pagesize && (sectp->flags & SEC_RELOC) == 0) | |
1815 | { | |
b315ab21 TG |
1816 | info->buffer = bfd_mmap (abfd, 0, info->size, PROT_READ, |
1817 | MAP_PRIVATE, sectp->filepos, | |
1818 | &info->map_addr, &info->map_len); | |
dce234bc | 1819 | |
b315ab21 | 1820 | if ((caddr_t)info->buffer != MAP_FAILED) |
dce234bc | 1821 | { |
be391dca | 1822 | #if HAVE_POSIX_MADVISE |
b315ab21 | 1823 | posix_madvise (info->map_addr, info->map_len, POSIX_MADV_WILLNEED); |
be391dca | 1824 | #endif |
dce234bc PP |
1825 | return; |
1826 | } | |
1827 | } | |
1828 | #endif | |
1829 | ||
1830 | /* If we get here, we are a normal, not-compressed section. */ | |
1831 | info->buffer = buf | |
1832 | = obstack_alloc (&objfile->objfile_obstack, info->size); | |
1833 | ||
1834 | /* When debugging .o files, we may need to apply relocations; see | |
1835 | http://sourceware.org/ml/gdb-patches/2002-04/msg00136.html . | |
1836 | We never compress sections in .o files, so we only need to | |
1837 | try this when the section is not compressed. */ | |
ac8035ab | 1838 | retbuf = symfile_relocate_debug_section (objfile, sectp, buf); |
dce234bc PP |
1839 | if (retbuf != NULL) |
1840 | { | |
1841 | info->buffer = retbuf; | |
1842 | return; | |
1843 | } | |
1844 | ||
1845 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 | |
1846 | || bfd_bread (buf, info->size, abfd) != info->size) | |
1847 | error (_("Dwarf Error: Can't read DWARF data from '%s'"), | |
1848 | bfd_get_filename (abfd)); | |
1849 | } | |
1850 | ||
9e0ac564 TT |
1851 | /* A helper function that returns the size of a section in a safe way. |
1852 | If you are positive that the section has been read before using the | |
1853 | size, then it is safe to refer to the dwarf2_section_info object's | |
1854 | "size" field directly. In other cases, you must call this | |
1855 | function, because for compressed sections the size field is not set | |
1856 | correctly until the section has been read. */ | |
1857 | ||
1858 | static bfd_size_type | |
1859 | dwarf2_section_size (struct objfile *objfile, | |
1860 | struct dwarf2_section_info *info) | |
1861 | { | |
1862 | if (!info->readin) | |
1863 | dwarf2_read_section (objfile, info); | |
1864 | return info->size; | |
1865 | } | |
1866 | ||
dce234bc | 1867 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 1868 | SECTION_NAME. */ |
af34e669 | 1869 | |
dce234bc | 1870 | void |
3017a003 TG |
1871 | dwarf2_get_section_info (struct objfile *objfile, |
1872 | enum dwarf2_section_enum sect, | |
dce234bc PP |
1873 | asection **sectp, gdb_byte **bufp, |
1874 | bfd_size_type *sizep) | |
1875 | { | |
1876 | struct dwarf2_per_objfile *data | |
1877 | = objfile_data (objfile, dwarf2_objfile_data_key); | |
1878 | struct dwarf2_section_info *info; | |
a3b2a86b TT |
1879 | |
1880 | /* We may see an objfile without any DWARF, in which case we just | |
1881 | return nothing. */ | |
1882 | if (data == NULL) | |
1883 | { | |
1884 | *sectp = NULL; | |
1885 | *bufp = NULL; | |
1886 | *sizep = 0; | |
1887 | return; | |
1888 | } | |
3017a003 TG |
1889 | switch (sect) |
1890 | { | |
1891 | case DWARF2_DEBUG_FRAME: | |
1892 | info = &data->frame; | |
1893 | break; | |
1894 | case DWARF2_EH_FRAME: | |
1895 | info = &data->eh_frame; | |
1896 | break; | |
1897 | default: | |
1898 | gdb_assert_not_reached ("unexpected section"); | |
1899 | } | |
dce234bc | 1900 | |
9e0ac564 | 1901 | dwarf2_read_section (objfile, info); |
dce234bc PP |
1902 | |
1903 | *sectp = info->asection; | |
1904 | *bufp = info->buffer; | |
1905 | *sizep = info->size; | |
1906 | } | |
1907 | ||
9291a0cd | 1908 | \f |
7b9f3c50 DE |
1909 | /* DWARF quick_symbols_functions support. */ |
1910 | ||
1911 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
1912 | unique line tables, so we maintain a separate table of all .debug_line | |
1913 | derived entries to support the sharing. | |
1914 | All the quick functions need is the list of file names. We discard the | |
1915 | line_header when we're done and don't need to record it here. */ | |
1916 | struct quick_file_names | |
1917 | { | |
1918 | /* The offset in .debug_line of the line table. We hash on this. */ | |
1919 | unsigned int offset; | |
1920 | ||
1921 | /* The number of entries in file_names, real_names. */ | |
1922 | unsigned int num_file_names; | |
1923 | ||
1924 | /* The file names from the line table, after being run through | |
1925 | file_full_name. */ | |
1926 | const char **file_names; | |
1927 | ||
1928 | /* The file names from the line table after being run through | |
1929 | gdb_realpath. These are computed lazily. */ | |
1930 | const char **real_names; | |
1931 | }; | |
1932 | ||
1933 | /* When using the index (and thus not using psymtabs), each CU has an | |
1934 | object of this type. This is used to hold information needed by | |
1935 | the various "quick" methods. */ | |
1936 | struct dwarf2_per_cu_quick_data | |
1937 | { | |
1938 | /* The file table. This can be NULL if there was no file table | |
1939 | or it's currently not read in. | |
1940 | NOTE: This points into dwarf2_per_objfile->quick_file_names_table. */ | |
1941 | struct quick_file_names *file_names; | |
1942 | ||
1943 | /* The corresponding symbol table. This is NULL if symbols for this | |
1944 | CU have not yet been read. */ | |
1945 | struct symtab *symtab; | |
1946 | ||
1947 | /* A temporary mark bit used when iterating over all CUs in | |
1948 | expand_symtabs_matching. */ | |
1949 | unsigned int mark : 1; | |
1950 | ||
1951 | /* True if we've tried to read the file table and found there isn't one. | |
1952 | There will be no point in trying to read it again next time. */ | |
1953 | unsigned int no_file_data : 1; | |
1954 | }; | |
1955 | ||
1956 | /* Hash function for a quick_file_names. */ | |
1957 | ||
1958 | static hashval_t | |
1959 | hash_file_name_entry (const void *e) | |
1960 | { | |
1961 | const struct quick_file_names *file_data = e; | |
1962 | ||
1963 | return file_data->offset; | |
1964 | } | |
1965 | ||
1966 | /* Equality function for a quick_file_names. */ | |
1967 | ||
1968 | static int | |
1969 | eq_file_name_entry (const void *a, const void *b) | |
1970 | { | |
1971 | const struct quick_file_names *ea = a; | |
1972 | const struct quick_file_names *eb = b; | |
1973 | ||
1974 | return ea->offset == eb->offset; | |
1975 | } | |
1976 | ||
1977 | /* Delete function for a quick_file_names. */ | |
1978 | ||
1979 | static void | |
1980 | delete_file_name_entry (void *e) | |
1981 | { | |
1982 | struct quick_file_names *file_data = e; | |
1983 | int i; | |
1984 | ||
1985 | for (i = 0; i < file_data->num_file_names; ++i) | |
1986 | { | |
1987 | xfree ((void*) file_data->file_names[i]); | |
1988 | if (file_data->real_names) | |
1989 | xfree ((void*) file_data->real_names[i]); | |
1990 | } | |
1991 | ||
1992 | /* The space for the struct itself lives on objfile_obstack, | |
1993 | so we don't free it here. */ | |
1994 | } | |
1995 | ||
1996 | /* Create a quick_file_names hash table. */ | |
1997 | ||
1998 | static htab_t | |
1999 | create_quick_file_names_table (unsigned int nr_initial_entries) | |
2000 | { | |
2001 | return htab_create_alloc (nr_initial_entries, | |
2002 | hash_file_name_entry, eq_file_name_entry, | |
2003 | delete_file_name_entry, xcalloc, xfree); | |
2004 | } | |
9291a0cd | 2005 | |
918dd910 JK |
2006 | /* Read in PER_CU->CU. This function is unrelated to symtabs, symtab would |
2007 | have to be created afterwards. You should call age_cached_comp_units after | |
2008 | processing PER_CU->CU. dw2_setup must have been already called. */ | |
2009 | ||
2010 | static void | |
2011 | load_cu (struct dwarf2_per_cu_data *per_cu) | |
2012 | { | |
3019eac3 | 2013 | if (per_cu->is_debug_types) |
e5fe5e75 | 2014 | load_full_type_unit (per_cu); |
918dd910 | 2015 | else |
95554aad | 2016 | load_full_comp_unit (per_cu, language_minimal); |
918dd910 | 2017 | |
918dd910 | 2018 | gdb_assert (per_cu->cu != NULL); |
2dc860c0 DE |
2019 | |
2020 | dwarf2_find_base_address (per_cu->cu->dies, per_cu->cu); | |
918dd910 JK |
2021 | } |
2022 | ||
a0f42c21 | 2023 | /* Read in the symbols for PER_CU. */ |
2fdf6df6 | 2024 | |
9291a0cd | 2025 | static void |
a0f42c21 | 2026 | dw2_do_instantiate_symtab (struct dwarf2_per_cu_data *per_cu) |
9291a0cd TT |
2027 | { |
2028 | struct cleanup *back_to; | |
2029 | ||
2030 | back_to = make_cleanup (dwarf2_release_queue, NULL); | |
2031 | ||
95554aad TT |
2032 | if (dwarf2_per_objfile->using_index |
2033 | ? per_cu->v.quick->symtab == NULL | |
2034 | : (per_cu->v.psymtab == NULL || !per_cu->v.psymtab->readin)) | |
2035 | { | |
2036 | queue_comp_unit (per_cu, language_minimal); | |
2037 | load_cu (per_cu); | |
2038 | } | |
9291a0cd | 2039 | |
a0f42c21 | 2040 | process_queue (); |
9291a0cd TT |
2041 | |
2042 | /* Age the cache, releasing compilation units that have not | |
2043 | been used recently. */ | |
2044 | age_cached_comp_units (); | |
2045 | ||
2046 | do_cleanups (back_to); | |
2047 | } | |
2048 | ||
2049 | /* Ensure that the symbols for PER_CU have been read in. OBJFILE is | |
2050 | the objfile from which this CU came. Returns the resulting symbol | |
2051 | table. */ | |
2fdf6df6 | 2052 | |
9291a0cd | 2053 | static struct symtab * |
a0f42c21 | 2054 | dw2_instantiate_symtab (struct dwarf2_per_cu_data *per_cu) |
9291a0cd | 2055 | { |
95554aad | 2056 | gdb_assert (dwarf2_per_objfile->using_index); |
9291a0cd TT |
2057 | if (!per_cu->v.quick->symtab) |
2058 | { | |
2059 | struct cleanup *back_to = make_cleanup (free_cached_comp_units, NULL); | |
2060 | increment_reading_symtab (); | |
a0f42c21 | 2061 | dw2_do_instantiate_symtab (per_cu); |
95554aad | 2062 | process_cu_includes (); |
9291a0cd TT |
2063 | do_cleanups (back_to); |
2064 | } | |
2065 | return per_cu->v.quick->symtab; | |
2066 | } | |
2067 | ||
1fd400ff | 2068 | /* Return the CU given its index. */ |
2fdf6df6 | 2069 | |
1fd400ff TT |
2070 | static struct dwarf2_per_cu_data * |
2071 | dw2_get_cu (int index) | |
2072 | { | |
2073 | if (index >= dwarf2_per_objfile->n_comp_units) | |
2074 | { | |
2075 | index -= dwarf2_per_objfile->n_comp_units; | |
d467dd73 | 2076 | return dwarf2_per_objfile->all_type_units[index]; |
1fd400ff TT |
2077 | } |
2078 | return dwarf2_per_objfile->all_comp_units[index]; | |
2079 | } | |
2080 | ||
9291a0cd TT |
2081 | /* A helper function that knows how to read a 64-bit value in a way |
2082 | that doesn't make gdb die. Returns 1 if the conversion went ok, 0 | |
2083 | otherwise. */ | |
2fdf6df6 | 2084 | |
9291a0cd TT |
2085 | static int |
2086 | extract_cu_value (const char *bytes, ULONGEST *result) | |
2087 | { | |
2088 | if (sizeof (ULONGEST) < 8) | |
2089 | { | |
2090 | int i; | |
2091 | ||
2092 | /* Ignore the upper 4 bytes if they are all zero. */ | |
2093 | for (i = 0; i < 4; ++i) | |
2094 | if (bytes[i + 4] != 0) | |
2095 | return 0; | |
2096 | ||
2097 | *result = extract_unsigned_integer (bytes, 4, BFD_ENDIAN_LITTLE); | |
2098 | } | |
2099 | else | |
2100 | *result = extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
2101 | return 1; | |
2102 | } | |
2103 | ||
2104 | /* Read the CU list from the mapped index, and use it to create all | |
2105 | the CU objects for this objfile. Return 0 if something went wrong, | |
2106 | 1 if everything went ok. */ | |
2fdf6df6 | 2107 | |
9291a0cd | 2108 | static int |
1fd400ff TT |
2109 | create_cus_from_index (struct objfile *objfile, const gdb_byte *cu_list, |
2110 | offset_type cu_list_elements) | |
9291a0cd TT |
2111 | { |
2112 | offset_type i; | |
9291a0cd TT |
2113 | |
2114 | dwarf2_per_objfile->n_comp_units = cu_list_elements / 2; | |
2115 | dwarf2_per_objfile->all_comp_units | |
2116 | = obstack_alloc (&objfile->objfile_obstack, | |
2117 | dwarf2_per_objfile->n_comp_units | |
2118 | * sizeof (struct dwarf2_per_cu_data *)); | |
2119 | ||
2120 | for (i = 0; i < cu_list_elements; i += 2) | |
2121 | { | |
2122 | struct dwarf2_per_cu_data *the_cu; | |
2123 | ULONGEST offset, length; | |
2124 | ||
2125 | if (!extract_cu_value (cu_list, &offset) | |
2126 | || !extract_cu_value (cu_list + 8, &length)) | |
2127 | return 0; | |
2128 | cu_list += 2 * 8; | |
2129 | ||
2130 | the_cu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2131 | struct dwarf2_per_cu_data); | |
b64f50a1 | 2132 | the_cu->offset.sect_off = offset; |
9291a0cd TT |
2133 | the_cu->length = length; |
2134 | the_cu->objfile = objfile; | |
3019eac3 | 2135 | the_cu->info_or_types_section = &dwarf2_per_objfile->info; |
9291a0cd TT |
2136 | the_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
2137 | struct dwarf2_per_cu_quick_data); | |
2138 | dwarf2_per_objfile->all_comp_units[i / 2] = the_cu; | |
2139 | } | |
2140 | ||
2141 | return 1; | |
2142 | } | |
2143 | ||
1fd400ff | 2144 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 2145 | |
1fd400ff | 2146 | static int |
673bfd45 | 2147 | create_signatured_type_table_from_index (struct objfile *objfile, |
8b70b953 | 2148 | struct dwarf2_section_info *section, |
673bfd45 DE |
2149 | const gdb_byte *bytes, |
2150 | offset_type elements) | |
1fd400ff TT |
2151 | { |
2152 | offset_type i; | |
673bfd45 | 2153 | htab_t sig_types_hash; |
1fd400ff | 2154 | |
d467dd73 DE |
2155 | dwarf2_per_objfile->n_type_units = elements / 3; |
2156 | dwarf2_per_objfile->all_type_units | |
1fd400ff | 2157 | = obstack_alloc (&objfile->objfile_obstack, |
d467dd73 | 2158 | dwarf2_per_objfile->n_type_units |
1fd400ff TT |
2159 | * sizeof (struct dwarf2_per_cu_data *)); |
2160 | ||
673bfd45 | 2161 | sig_types_hash = allocate_signatured_type_table (objfile); |
1fd400ff TT |
2162 | |
2163 | for (i = 0; i < elements; i += 3) | |
2164 | { | |
52dc124a DE |
2165 | struct signatured_type *sig_type; |
2166 | ULONGEST offset, type_offset_in_tu, signature; | |
1fd400ff TT |
2167 | void **slot; |
2168 | ||
2169 | if (!extract_cu_value (bytes, &offset) | |
52dc124a | 2170 | || !extract_cu_value (bytes + 8, &type_offset_in_tu)) |
1fd400ff TT |
2171 | return 0; |
2172 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); | |
2173 | bytes += 3 * 8; | |
2174 | ||
52dc124a | 2175 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
1fd400ff | 2176 | struct signatured_type); |
52dc124a | 2177 | sig_type->signature = signature; |
3019eac3 DE |
2178 | sig_type->type_offset_in_tu.cu_off = type_offset_in_tu; |
2179 | sig_type->per_cu.is_debug_types = 1; | |
2180 | sig_type->per_cu.info_or_types_section = section; | |
52dc124a DE |
2181 | sig_type->per_cu.offset.sect_off = offset; |
2182 | sig_type->per_cu.objfile = objfile; | |
2183 | sig_type->per_cu.v.quick | |
1fd400ff TT |
2184 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
2185 | struct dwarf2_per_cu_quick_data); | |
2186 | ||
52dc124a DE |
2187 | slot = htab_find_slot (sig_types_hash, sig_type, INSERT); |
2188 | *slot = sig_type; | |
1fd400ff | 2189 | |
52dc124a | 2190 | dwarf2_per_objfile->all_type_units[i / 3] = &sig_type->per_cu; |
1fd400ff TT |
2191 | } |
2192 | ||
673bfd45 | 2193 | dwarf2_per_objfile->signatured_types = sig_types_hash; |
1fd400ff TT |
2194 | |
2195 | return 1; | |
2196 | } | |
2197 | ||
9291a0cd TT |
2198 | /* Read the address map data from the mapped index, and use it to |
2199 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 2200 | |
9291a0cd TT |
2201 | static void |
2202 | create_addrmap_from_index (struct objfile *objfile, struct mapped_index *index) | |
2203 | { | |
2204 | const gdb_byte *iter, *end; | |
2205 | struct obstack temp_obstack; | |
2206 | struct addrmap *mutable_map; | |
2207 | struct cleanup *cleanup; | |
2208 | CORE_ADDR baseaddr; | |
2209 | ||
2210 | obstack_init (&temp_obstack); | |
2211 | cleanup = make_cleanup_obstack_free (&temp_obstack); | |
2212 | mutable_map = addrmap_create_mutable (&temp_obstack); | |
2213 | ||
2214 | iter = index->address_table; | |
2215 | end = iter + index->address_table_size; | |
2216 | ||
2217 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
2218 | ||
2219 | while (iter < end) | |
2220 | { | |
2221 | ULONGEST hi, lo, cu_index; | |
2222 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2223 | iter += 8; | |
2224 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2225 | iter += 8; | |
2226 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
2227 | iter += 4; | |
2228 | ||
2229 | addrmap_set_empty (mutable_map, lo + baseaddr, hi + baseaddr - 1, | |
1fd400ff | 2230 | dw2_get_cu (cu_index)); |
9291a0cd TT |
2231 | } |
2232 | ||
2233 | objfile->psymtabs_addrmap = addrmap_create_fixed (mutable_map, | |
2234 | &objfile->objfile_obstack); | |
2235 | do_cleanups (cleanup); | |
2236 | } | |
2237 | ||
59d7bcaf JK |
2238 | /* The hash function for strings in the mapped index. This is the same as |
2239 | SYMBOL_HASH_NEXT, but we keep a separate copy to maintain control over the | |
2240 | implementation. This is necessary because the hash function is tied to the | |
2241 | format of the mapped index file. The hash values do not have to match with | |
559a7a62 JK |
2242 | SYMBOL_HASH_NEXT. |
2243 | ||
2244 | Use INT_MAX for INDEX_VERSION if you generate the current index format. */ | |
2fdf6df6 | 2245 | |
9291a0cd | 2246 | static hashval_t |
559a7a62 | 2247 | mapped_index_string_hash (int index_version, const void *p) |
9291a0cd TT |
2248 | { |
2249 | const unsigned char *str = (const unsigned char *) p; | |
2250 | hashval_t r = 0; | |
2251 | unsigned char c; | |
2252 | ||
2253 | while ((c = *str++) != 0) | |
559a7a62 JK |
2254 | { |
2255 | if (index_version >= 5) | |
2256 | c = tolower (c); | |
2257 | r = r * 67 + c - 113; | |
2258 | } | |
9291a0cd TT |
2259 | |
2260 | return r; | |
2261 | } | |
2262 | ||
2263 | /* Find a slot in the mapped index INDEX for the object named NAME. | |
2264 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
2265 | constant pool and return 1. If NAME cannot be found, return 0. */ | |
2fdf6df6 | 2266 | |
9291a0cd TT |
2267 | static int |
2268 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, | |
2269 | offset_type **vec_out) | |
2270 | { | |
0cf03b49 JK |
2271 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2272 | offset_type hash; | |
9291a0cd | 2273 | offset_type slot, step; |
559a7a62 | 2274 | int (*cmp) (const char *, const char *); |
9291a0cd | 2275 | |
0cf03b49 JK |
2276 | if (current_language->la_language == language_cplus |
2277 | || current_language->la_language == language_java | |
2278 | || current_language->la_language == language_fortran) | |
2279 | { | |
2280 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
2281 | not contain any. */ | |
2282 | const char *paren = strchr (name, '('); | |
2283 | ||
2284 | if (paren) | |
2285 | { | |
2286 | char *dup; | |
2287 | ||
2288 | dup = xmalloc (paren - name + 1); | |
2289 | memcpy (dup, name, paren - name); | |
2290 | dup[paren - name] = 0; | |
2291 | ||
2292 | make_cleanup (xfree, dup); | |
2293 | name = dup; | |
2294 | } | |
2295 | } | |
2296 | ||
559a7a62 | 2297 | /* Index version 4 did not support case insensitive searches. But the |
feea76c2 | 2298 | indices for case insensitive languages are built in lowercase, therefore |
559a7a62 JK |
2299 | simulate our NAME being searched is also lowercased. */ |
2300 | hash = mapped_index_string_hash ((index->version == 4 | |
2301 | && case_sensitivity == case_sensitive_off | |
2302 | ? 5 : index->version), | |
2303 | name); | |
2304 | ||
3876f04e DE |
2305 | slot = hash & (index->symbol_table_slots - 1); |
2306 | step = ((hash * 17) & (index->symbol_table_slots - 1)) | 1; | |
559a7a62 | 2307 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
2308 | |
2309 | for (;;) | |
2310 | { | |
2311 | /* Convert a slot number to an offset into the table. */ | |
2312 | offset_type i = 2 * slot; | |
2313 | const char *str; | |
3876f04e | 2314 | if (index->symbol_table[i] == 0 && index->symbol_table[i + 1] == 0) |
0cf03b49 JK |
2315 | { |
2316 | do_cleanups (back_to); | |
2317 | return 0; | |
2318 | } | |
9291a0cd | 2319 | |
3876f04e | 2320 | str = index->constant_pool + MAYBE_SWAP (index->symbol_table[i]); |
559a7a62 | 2321 | if (!cmp (name, str)) |
9291a0cd TT |
2322 | { |
2323 | *vec_out = (offset_type *) (index->constant_pool | |
3876f04e | 2324 | + MAYBE_SWAP (index->symbol_table[i + 1])); |
0cf03b49 | 2325 | do_cleanups (back_to); |
9291a0cd TT |
2326 | return 1; |
2327 | } | |
2328 | ||
3876f04e | 2329 | slot = (slot + step) & (index->symbol_table_slots - 1); |
9291a0cd TT |
2330 | } |
2331 | } | |
2332 | ||
2333 | /* Read the index file. If everything went ok, initialize the "quick" | |
2334 | elements of all the CUs and return 1. Otherwise, return 0. */ | |
2fdf6df6 | 2335 | |
9291a0cd TT |
2336 | static int |
2337 | dwarf2_read_index (struct objfile *objfile) | |
2338 | { | |
9291a0cd TT |
2339 | char *addr; |
2340 | struct mapped_index *map; | |
b3b272e1 | 2341 | offset_type *metadata; |
ac0b195c KW |
2342 | const gdb_byte *cu_list; |
2343 | const gdb_byte *types_list = NULL; | |
2344 | offset_type version, cu_list_elements; | |
2345 | offset_type types_list_elements = 0; | |
1fd400ff | 2346 | int i; |
9291a0cd | 2347 | |
9e0ac564 | 2348 | if (dwarf2_section_empty_p (&dwarf2_per_objfile->gdb_index)) |
9291a0cd | 2349 | return 0; |
82430852 JK |
2350 | |
2351 | /* Older elfutils strip versions could keep the section in the main | |
2352 | executable while splitting it for the separate debug info file. */ | |
2353 | if ((bfd_get_file_flags (dwarf2_per_objfile->gdb_index.asection) | |
2354 | & SEC_HAS_CONTENTS) == 0) | |
2355 | return 0; | |
2356 | ||
9291a0cd TT |
2357 | dwarf2_read_section (objfile, &dwarf2_per_objfile->gdb_index); |
2358 | ||
2359 | addr = dwarf2_per_objfile->gdb_index.buffer; | |
2360 | /* Version check. */ | |
1fd400ff | 2361 | version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 2362 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 2363 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 2364 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 2365 | indices. */ |
831adc1f | 2366 | if (version < 4) |
481860b3 GB |
2367 | { |
2368 | static int warning_printed = 0; | |
2369 | if (!warning_printed) | |
2370 | { | |
2371 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2372 | objfile->name); | |
2373 | warning_printed = 1; | |
2374 | } | |
2375 | return 0; | |
2376 | } | |
2377 | /* Index version 4 uses a different hash function than index version | |
2378 | 5 and later. | |
2379 | ||
2380 | Versions earlier than 6 did not emit psymbols for inlined | |
2381 | functions. Using these files will cause GDB not to be able to | |
2382 | set breakpoints on inlined functions by name, so we ignore these | |
2383 | indices unless the --use-deprecated-index-sections command line | |
2384 | option was supplied. */ | |
2385 | if (version < 6 && !use_deprecated_index_sections) | |
2386 | { | |
2387 | static int warning_printed = 0; | |
2388 | if (!warning_printed) | |
2389 | { | |
2390 | warning (_("Skipping deprecated .gdb_index section in %s, pass " | |
2391 | "--use-deprecated-index-sections to use them anyway"), | |
2392 | objfile->name); | |
2393 | warning_printed = 1; | |
2394 | } | |
2395 | return 0; | |
2396 | } | |
2397 | /* Indexes with higher version than the one supported by GDB may be no | |
594e8718 | 2398 | longer backward compatible. */ |
156942c7 | 2399 | if (version > 7) |
594e8718 | 2400 | return 0; |
9291a0cd TT |
2401 | |
2402 | map = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct mapped_index); | |
559a7a62 | 2403 | map->version = version; |
b3b272e1 | 2404 | map->total_size = dwarf2_per_objfile->gdb_index.size; |
9291a0cd TT |
2405 | |
2406 | metadata = (offset_type *) (addr + sizeof (offset_type)); | |
1fd400ff TT |
2407 | |
2408 | i = 0; | |
2409 | cu_list = addr + MAYBE_SWAP (metadata[i]); | |
2410 | cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
9291a0cd | 2411 | / 8); |
1fd400ff TT |
2412 | ++i; |
2413 | ||
987d643c TT |
2414 | types_list = addr + MAYBE_SWAP (metadata[i]); |
2415 | types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
2416 | - MAYBE_SWAP (metadata[i])) | |
2417 | / 8); | |
2418 | ++i; | |
1fd400ff TT |
2419 | |
2420 | map->address_table = addr + MAYBE_SWAP (metadata[i]); | |
2421 | map->address_table_size = (MAYBE_SWAP (metadata[i + 1]) | |
2422 | - MAYBE_SWAP (metadata[i])); | |
2423 | ++i; | |
2424 | ||
3876f04e DE |
2425 | map->symbol_table = (offset_type *) (addr + MAYBE_SWAP (metadata[i])); |
2426 | map->symbol_table_slots = ((MAYBE_SWAP (metadata[i + 1]) | |
2427 | - MAYBE_SWAP (metadata[i])) | |
2428 | / (2 * sizeof (offset_type))); | |
1fd400ff | 2429 | ++i; |
9291a0cd | 2430 | |
1fd400ff TT |
2431 | map->constant_pool = addr + MAYBE_SWAP (metadata[i]); |
2432 | ||
0fefef59 DE |
2433 | /* Don't use the index if it's empty. */ |
2434 | if (map->symbol_table_slots == 0) | |
2435 | return 0; | |
2436 | ||
1fd400ff TT |
2437 | if (!create_cus_from_index (objfile, cu_list, cu_list_elements)) |
2438 | return 0; | |
2439 | ||
8b70b953 TT |
2440 | if (types_list_elements) |
2441 | { | |
2442 | struct dwarf2_section_info *section; | |
2443 | ||
2444 | /* We can only handle a single .debug_types when we have an | |
2445 | index. */ | |
2446 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) != 1) | |
2447 | return 0; | |
2448 | ||
2449 | section = VEC_index (dwarf2_section_info_def, | |
2450 | dwarf2_per_objfile->types, 0); | |
2451 | ||
2452 | if (!create_signatured_type_table_from_index (objfile, section, | |
2453 | types_list, | |
2454 | types_list_elements)) | |
2455 | return 0; | |
2456 | } | |
9291a0cd TT |
2457 | |
2458 | create_addrmap_from_index (objfile, map); | |
2459 | ||
2460 | dwarf2_per_objfile->index_table = map; | |
2461 | dwarf2_per_objfile->using_index = 1; | |
7b9f3c50 DE |
2462 | dwarf2_per_objfile->quick_file_names_table = |
2463 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd TT |
2464 | |
2465 | return 1; | |
2466 | } | |
2467 | ||
2468 | /* A helper for the "quick" functions which sets the global | |
2469 | dwarf2_per_objfile according to OBJFILE. */ | |
2fdf6df6 | 2470 | |
9291a0cd TT |
2471 | static void |
2472 | dw2_setup (struct objfile *objfile) | |
2473 | { | |
2474 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
2475 | gdb_assert (dwarf2_per_objfile); | |
2476 | } | |
2477 | ||
dee91e82 | 2478 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 2479 | |
dee91e82 DE |
2480 | static void |
2481 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
2482 | gdb_byte *info_ptr, | |
2483 | struct die_info *comp_unit_die, | |
2484 | int has_children, | |
2485 | void *data) | |
9291a0cd | 2486 | { |
dee91e82 DE |
2487 | struct dwarf2_cu *cu = reader->cu; |
2488 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; | |
2489 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
7b9f3c50 | 2490 | struct line_header *lh; |
9291a0cd | 2491 | struct attribute *attr; |
dee91e82 | 2492 | int i; |
9291a0cd | 2493 | char *name, *comp_dir; |
7b9f3c50 DE |
2494 | void **slot; |
2495 | struct quick_file_names *qfn; | |
2496 | unsigned int line_offset; | |
9291a0cd | 2497 | |
07261596 TT |
2498 | /* Our callers never want to match partial units -- instead they |
2499 | will match the enclosing full CU. */ | |
2500 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
2501 | { | |
2502 | this_cu->v.quick->no_file_data = 1; | |
2503 | return; | |
2504 | } | |
2505 | ||
7b9f3c50 DE |
2506 | lh = NULL; |
2507 | slot = NULL; | |
2508 | line_offset = 0; | |
dee91e82 DE |
2509 | |
2510 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); | |
9291a0cd TT |
2511 | if (attr) |
2512 | { | |
7b9f3c50 DE |
2513 | struct quick_file_names find_entry; |
2514 | ||
2515 | line_offset = DW_UNSND (attr); | |
2516 | ||
2517 | /* We may have already read in this line header (TU line header sharing). | |
2518 | If we have we're done. */ | |
2519 | find_entry.offset = line_offset; | |
2520 | slot = htab_find_slot (dwarf2_per_objfile->quick_file_names_table, | |
2521 | &find_entry, INSERT); | |
2522 | if (*slot != NULL) | |
2523 | { | |
7b9f3c50 | 2524 | this_cu->v.quick->file_names = *slot; |
dee91e82 | 2525 | return; |
7b9f3c50 DE |
2526 | } |
2527 | ||
3019eac3 | 2528 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
2529 | } |
2530 | if (lh == NULL) | |
2531 | { | |
7b9f3c50 | 2532 | this_cu->v.quick->no_file_data = 1; |
dee91e82 | 2533 | return; |
9291a0cd TT |
2534 | } |
2535 | ||
7b9f3c50 DE |
2536 | qfn = obstack_alloc (&objfile->objfile_obstack, sizeof (*qfn)); |
2537 | qfn->offset = line_offset; | |
2538 | gdb_assert (slot != NULL); | |
2539 | *slot = qfn; | |
9291a0cd | 2540 | |
dee91e82 | 2541 | find_file_and_directory (comp_unit_die, cu, &name, &comp_dir); |
9291a0cd | 2542 | |
7b9f3c50 DE |
2543 | qfn->num_file_names = lh->num_file_names; |
2544 | qfn->file_names = obstack_alloc (&objfile->objfile_obstack, | |
2545 | lh->num_file_names * sizeof (char *)); | |
9291a0cd | 2546 | for (i = 0; i < lh->num_file_names; ++i) |
7b9f3c50 DE |
2547 | qfn->file_names[i] = file_full_name (i + 1, lh, comp_dir); |
2548 | qfn->real_names = NULL; | |
9291a0cd | 2549 | |
7b9f3c50 | 2550 | free_line_header (lh); |
7b9f3c50 DE |
2551 | |
2552 | this_cu->v.quick->file_names = qfn; | |
dee91e82 DE |
2553 | } |
2554 | ||
2555 | /* A helper for the "quick" functions which attempts to read the line | |
2556 | table for THIS_CU. */ | |
2557 | ||
2558 | static struct quick_file_names * | |
2559 | dw2_get_file_names (struct objfile *objfile, | |
2560 | struct dwarf2_per_cu_data *this_cu) | |
2561 | { | |
2562 | if (this_cu->v.quick->file_names != NULL) | |
2563 | return this_cu->v.quick->file_names; | |
2564 | /* If we know there is no line data, no point in looking again. */ | |
2565 | if (this_cu->v.quick->no_file_data) | |
2566 | return NULL; | |
2567 | ||
3019eac3 DE |
2568 | /* If DWO files are in use, we can still find the DW_AT_stmt_list attribute |
2569 | in the stub for CUs, there's is no need to lookup the DWO file. | |
2570 | However, that's not the case for TUs where DW_AT_stmt_list lives in the | |
2571 | DWO file. */ | |
2572 | if (this_cu->is_debug_types) | |
fd820528 | 2573 | init_cutu_and_read_dies (this_cu, 0, 0, dw2_get_file_names_reader, NULL); |
3019eac3 DE |
2574 | else |
2575 | init_cutu_and_read_dies_simple (this_cu, dw2_get_file_names_reader, NULL); | |
dee91e82 DE |
2576 | |
2577 | if (this_cu->v.quick->no_file_data) | |
2578 | return NULL; | |
2579 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
2580 | } |
2581 | ||
2582 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 2583 | real path for a given file name from the line table. */ |
2fdf6df6 | 2584 | |
9291a0cd | 2585 | static const char * |
7b9f3c50 DE |
2586 | dw2_get_real_path (struct objfile *objfile, |
2587 | struct quick_file_names *qfn, int index) | |
9291a0cd | 2588 | { |
7b9f3c50 DE |
2589 | if (qfn->real_names == NULL) |
2590 | qfn->real_names = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
2591 | qfn->num_file_names, sizeof (char *)); | |
9291a0cd | 2592 | |
7b9f3c50 DE |
2593 | if (qfn->real_names[index] == NULL) |
2594 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]); | |
9291a0cd | 2595 | |
7b9f3c50 | 2596 | return qfn->real_names[index]; |
9291a0cd TT |
2597 | } |
2598 | ||
2599 | static struct symtab * | |
2600 | dw2_find_last_source_symtab (struct objfile *objfile) | |
2601 | { | |
2602 | int index; | |
ae2de4f8 | 2603 | |
9291a0cd TT |
2604 | dw2_setup (objfile); |
2605 | index = dwarf2_per_objfile->n_comp_units - 1; | |
a0f42c21 | 2606 | return dw2_instantiate_symtab (dw2_get_cu (index)); |
9291a0cd TT |
2607 | } |
2608 | ||
7b9f3c50 DE |
2609 | /* Traversal function for dw2_forget_cached_source_info. */ |
2610 | ||
2611 | static int | |
2612 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 2613 | { |
7b9f3c50 | 2614 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 2615 | |
7b9f3c50 | 2616 | if (file_data->real_names) |
9291a0cd | 2617 | { |
7b9f3c50 | 2618 | int i; |
9291a0cd | 2619 | |
7b9f3c50 | 2620 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 2621 | { |
7b9f3c50 DE |
2622 | xfree ((void*) file_data->real_names[i]); |
2623 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
2624 | } |
2625 | } | |
7b9f3c50 DE |
2626 | |
2627 | return 1; | |
2628 | } | |
2629 | ||
2630 | static void | |
2631 | dw2_forget_cached_source_info (struct objfile *objfile) | |
2632 | { | |
2633 | dw2_setup (objfile); | |
2634 | ||
2635 | htab_traverse_noresize (dwarf2_per_objfile->quick_file_names_table, | |
2636 | dw2_free_cached_file_names, NULL); | |
9291a0cd TT |
2637 | } |
2638 | ||
f8eba3c6 TT |
2639 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
2640 | the symtabs and calls the iterator. */ | |
2641 | ||
2642 | static int | |
2643 | dw2_map_expand_apply (struct objfile *objfile, | |
2644 | struct dwarf2_per_cu_data *per_cu, | |
2645 | const char *name, | |
2646 | const char *full_path, const char *real_path, | |
2647 | int (*callback) (struct symtab *, void *), | |
2648 | void *data) | |
2649 | { | |
2650 | struct symtab *last_made = objfile->symtabs; | |
2651 | ||
2652 | /* Don't visit already-expanded CUs. */ | |
2653 | if (per_cu->v.quick->symtab) | |
2654 | return 0; | |
2655 | ||
2656 | /* This may expand more than one symtab, and we want to iterate over | |
2657 | all of them. */ | |
a0f42c21 | 2658 | dw2_instantiate_symtab (per_cu); |
f8eba3c6 TT |
2659 | |
2660 | return iterate_over_some_symtabs (name, full_path, real_path, callback, data, | |
2661 | objfile->symtabs, last_made); | |
2662 | } | |
2663 | ||
2664 | /* Implementation of the map_symtabs_matching_filename method. */ | |
2665 | ||
9291a0cd | 2666 | static int |
f8eba3c6 TT |
2667 | dw2_map_symtabs_matching_filename (struct objfile *objfile, const char *name, |
2668 | const char *full_path, const char *real_path, | |
2669 | int (*callback) (struct symtab *, void *), | |
2670 | void *data) | |
9291a0cd TT |
2671 | { |
2672 | int i; | |
c011a4f4 | 2673 | const char *name_basename = lbasename (name); |
4aac40c8 TT |
2674 | int name_len = strlen (name); |
2675 | int is_abs = IS_ABSOLUTE_PATH (name); | |
9291a0cd TT |
2676 | |
2677 | dw2_setup (objfile); | |
ae2de4f8 | 2678 | |
1fd400ff | 2679 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
d467dd73 | 2680 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd TT |
2681 | { |
2682 | int j; | |
e254ef6a | 2683 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
7b9f3c50 | 2684 | struct quick_file_names *file_data; |
9291a0cd | 2685 | |
3d7bb9d9 | 2686 | /* We only need to look at symtabs not already expanded. */ |
e254ef6a | 2687 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
2688 | continue; |
2689 | ||
7b9f3c50 DE |
2690 | file_data = dw2_get_file_names (objfile, per_cu); |
2691 | if (file_data == NULL) | |
9291a0cd TT |
2692 | continue; |
2693 | ||
7b9f3c50 | 2694 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 2695 | { |
7b9f3c50 | 2696 | const char *this_name = file_data->file_names[j]; |
9291a0cd | 2697 | |
4aac40c8 TT |
2698 | if (FILENAME_CMP (name, this_name) == 0 |
2699 | || (!is_abs && compare_filenames_for_search (this_name, | |
2700 | name, name_len))) | |
9291a0cd | 2701 | { |
f8eba3c6 TT |
2702 | if (dw2_map_expand_apply (objfile, per_cu, |
2703 | name, full_path, real_path, | |
2704 | callback, data)) | |
2705 | return 1; | |
4aac40c8 | 2706 | } |
9291a0cd | 2707 | |
c011a4f4 DE |
2708 | /* Before we invoke realpath, which can get expensive when many |
2709 | files are involved, do a quick comparison of the basenames. */ | |
2710 | if (! basenames_may_differ | |
2711 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
2712 | continue; | |
2713 | ||
9291a0cd TT |
2714 | if (full_path != NULL) |
2715 | { | |
7b9f3c50 DE |
2716 | const char *this_real_name = dw2_get_real_path (objfile, |
2717 | file_data, j); | |
9291a0cd | 2718 | |
7b9f3c50 | 2719 | if (this_real_name != NULL |
4aac40c8 TT |
2720 | && (FILENAME_CMP (full_path, this_real_name) == 0 |
2721 | || (!is_abs | |
2722 | && compare_filenames_for_search (this_real_name, | |
2723 | name, name_len)))) | |
9291a0cd | 2724 | { |
f8eba3c6 TT |
2725 | if (dw2_map_expand_apply (objfile, per_cu, |
2726 | name, full_path, real_path, | |
2727 | callback, data)) | |
2728 | return 1; | |
9291a0cd TT |
2729 | } |
2730 | } | |
2731 | ||
2732 | if (real_path != NULL) | |
2733 | { | |
7b9f3c50 DE |
2734 | const char *this_real_name = dw2_get_real_path (objfile, |
2735 | file_data, j); | |
9291a0cd | 2736 | |
7b9f3c50 | 2737 | if (this_real_name != NULL |
4aac40c8 TT |
2738 | && (FILENAME_CMP (real_path, this_real_name) == 0 |
2739 | || (!is_abs | |
2740 | && compare_filenames_for_search (this_real_name, | |
2741 | name, name_len)))) | |
9291a0cd | 2742 | { |
f8eba3c6 TT |
2743 | if (dw2_map_expand_apply (objfile, per_cu, |
2744 | name, full_path, real_path, | |
2745 | callback, data)) | |
2746 | return 1; | |
9291a0cd TT |
2747 | } |
2748 | } | |
2749 | } | |
2750 | } | |
2751 | ||
9291a0cd TT |
2752 | return 0; |
2753 | } | |
2754 | ||
2755 | static struct symtab * | |
2756 | dw2_lookup_symbol (struct objfile *objfile, int block_index, | |
2757 | const char *name, domain_enum domain) | |
2758 | { | |
774b6a14 | 2759 | /* We do all the work in the pre_expand_symtabs_matching hook |
9291a0cd TT |
2760 | instead. */ |
2761 | return NULL; | |
2762 | } | |
2763 | ||
2764 | /* A helper function that expands all symtabs that hold an object | |
156942c7 DE |
2765 | named NAME. If WANT_SPECIFIC_BLOCK is non-zero, only look for |
2766 | symbols in block BLOCK_KIND. */ | |
2fdf6df6 | 2767 | |
9291a0cd | 2768 | static void |
156942c7 DE |
2769 | dw2_do_expand_symtabs_matching (struct objfile *objfile, |
2770 | int want_specific_block, | |
2771 | enum block_enum block_kind, | |
2772 | const char *name, domain_enum domain) | |
9291a0cd | 2773 | { |
156942c7 DE |
2774 | struct mapped_index *index; |
2775 | ||
9291a0cd TT |
2776 | dw2_setup (objfile); |
2777 | ||
156942c7 DE |
2778 | index = dwarf2_per_objfile->index_table; |
2779 | ||
ae2de4f8 | 2780 | /* index_table is NULL if OBJF_READNOW. */ |
156942c7 | 2781 | if (index) |
9291a0cd TT |
2782 | { |
2783 | offset_type *vec; | |
2784 | ||
156942c7 | 2785 | if (find_slot_in_mapped_hash (index, name, &vec)) |
9291a0cd TT |
2786 | { |
2787 | offset_type i, len = MAYBE_SWAP (*vec); | |
2788 | for (i = 0; i < len; ++i) | |
2789 | { | |
156942c7 DE |
2790 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[i + 1]); |
2791 | offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
e254ef6a | 2792 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (cu_index); |
156942c7 DE |
2793 | int want_static = block_kind != GLOBAL_BLOCK; |
2794 | /* This value is only valid for index versions >= 7. */ | |
2795 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
2796 | gdb_index_symbol_kind symbol_kind = | |
2797 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
2798 | ||
2799 | if (want_specific_block | |
2800 | && index->version >= 7 | |
2801 | && want_static != is_static) | |
2802 | continue; | |
2803 | ||
2804 | /* Only check the symbol's kind if it has one. | |
2805 | Indices prior to version 7 don't record it. */ | |
2806 | if (index->version >= 7) | |
2807 | { | |
2808 | switch (domain) | |
2809 | { | |
2810 | case VAR_DOMAIN: | |
2811 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
2812 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
2813 | /* Some types are also in VAR_DOMAIN. */ | |
2814 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
2815 | continue; | |
2816 | break; | |
2817 | case STRUCT_DOMAIN: | |
2818 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
2819 | continue; | |
2820 | break; | |
2821 | case LABEL_DOMAIN: | |
2822 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
2823 | continue; | |
2824 | break; | |
2825 | default: | |
2826 | break; | |
2827 | } | |
2828 | } | |
1fd400ff | 2829 | |
a0f42c21 | 2830 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
2831 | } |
2832 | } | |
2833 | } | |
2834 | } | |
2835 | ||
774b6a14 TT |
2836 | static void |
2837 | dw2_pre_expand_symtabs_matching (struct objfile *objfile, | |
8903c50d | 2838 | enum block_enum block_kind, const char *name, |
774b6a14 | 2839 | domain_enum domain) |
9291a0cd | 2840 | { |
156942c7 | 2841 | dw2_do_expand_symtabs_matching (objfile, 1, block_kind, name, domain); |
9291a0cd TT |
2842 | } |
2843 | ||
2844 | static void | |
2845 | dw2_print_stats (struct objfile *objfile) | |
2846 | { | |
2847 | int i, count; | |
2848 | ||
2849 | dw2_setup (objfile); | |
2850 | count = 0; | |
1fd400ff | 2851 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
d467dd73 | 2852 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 2853 | { |
e254ef6a | 2854 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 2855 | |
e254ef6a | 2856 | if (!per_cu->v.quick->symtab) |
9291a0cd TT |
2857 | ++count; |
2858 | } | |
2859 | printf_filtered (_(" Number of unread CUs: %d\n"), count); | |
2860 | } | |
2861 | ||
2862 | static void | |
2863 | dw2_dump (struct objfile *objfile) | |
2864 | { | |
2865 | /* Nothing worth printing. */ | |
2866 | } | |
2867 | ||
2868 | static void | |
2869 | dw2_relocate (struct objfile *objfile, struct section_offsets *new_offsets, | |
2870 | struct section_offsets *delta) | |
2871 | { | |
2872 | /* There's nothing to relocate here. */ | |
2873 | } | |
2874 | ||
2875 | static void | |
2876 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
2877 | const char *func_name) | |
2878 | { | |
156942c7 DE |
2879 | /* Note: It doesn't matter what we pass for block_kind here. */ |
2880 | dw2_do_expand_symtabs_matching (objfile, 0, GLOBAL_BLOCK, func_name, | |
2881 | VAR_DOMAIN); | |
9291a0cd TT |
2882 | } |
2883 | ||
2884 | static void | |
2885 | dw2_expand_all_symtabs (struct objfile *objfile) | |
2886 | { | |
2887 | int i; | |
2888 | ||
2889 | dw2_setup (objfile); | |
1fd400ff TT |
2890 | |
2891 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
d467dd73 | 2892 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 2893 | { |
e254ef6a | 2894 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 2895 | |
a0f42c21 | 2896 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
2897 | } |
2898 | } | |
2899 | ||
2900 | static void | |
2901 | dw2_expand_symtabs_with_filename (struct objfile *objfile, | |
2902 | const char *filename) | |
2903 | { | |
2904 | int i; | |
2905 | ||
2906 | dw2_setup (objfile); | |
d4637a04 DE |
2907 | |
2908 | /* We don't need to consider type units here. | |
2909 | This is only called for examining code, e.g. expand_line_sal. | |
2910 | There can be an order of magnitude (or more) more type units | |
2911 | than comp units, and we avoid them if we can. */ | |
2912 | ||
2913 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
9291a0cd TT |
2914 | { |
2915 | int j; | |
e254ef6a | 2916 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
7b9f3c50 | 2917 | struct quick_file_names *file_data; |
9291a0cd | 2918 | |
3d7bb9d9 | 2919 | /* We only need to look at symtabs not already expanded. */ |
e254ef6a | 2920 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
2921 | continue; |
2922 | ||
7b9f3c50 DE |
2923 | file_data = dw2_get_file_names (objfile, per_cu); |
2924 | if (file_data == NULL) | |
9291a0cd TT |
2925 | continue; |
2926 | ||
7b9f3c50 | 2927 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 2928 | { |
7b9f3c50 | 2929 | const char *this_name = file_data->file_names[j]; |
1ef75ecc | 2930 | if (FILENAME_CMP (this_name, filename) == 0) |
9291a0cd | 2931 | { |
a0f42c21 | 2932 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
2933 | break; |
2934 | } | |
2935 | } | |
2936 | } | |
2937 | } | |
2938 | ||
356d9f9d TT |
2939 | /* A helper function for dw2_find_symbol_file that finds the primary |
2940 | file name for a given CU. This is a die_reader_func. */ | |
2941 | ||
2942 | static void | |
2943 | dw2_get_primary_filename_reader (const struct die_reader_specs *reader, | |
2944 | gdb_byte *info_ptr, | |
2945 | struct die_info *comp_unit_die, | |
2946 | int has_children, | |
2947 | void *data) | |
2948 | { | |
2949 | const char **result_ptr = data; | |
2950 | struct dwarf2_cu *cu = reader->cu; | |
2951 | struct attribute *attr; | |
2952 | ||
2953 | attr = dwarf2_attr (comp_unit_die, DW_AT_name, cu); | |
2954 | if (attr == NULL) | |
2955 | *result_ptr = NULL; | |
2956 | else | |
2957 | *result_ptr = DW_STRING (attr); | |
2958 | } | |
2959 | ||
dd786858 | 2960 | static const char * |
9291a0cd TT |
2961 | dw2_find_symbol_file (struct objfile *objfile, const char *name) |
2962 | { | |
e254ef6a | 2963 | struct dwarf2_per_cu_data *per_cu; |
9291a0cd | 2964 | offset_type *vec; |
7b9f3c50 | 2965 | struct quick_file_names *file_data; |
356d9f9d | 2966 | const char *filename; |
9291a0cd TT |
2967 | |
2968 | dw2_setup (objfile); | |
2969 | ||
ae2de4f8 | 2970 | /* index_table is NULL if OBJF_READNOW. */ |
9291a0cd | 2971 | if (!dwarf2_per_objfile->index_table) |
96408a79 SA |
2972 | { |
2973 | struct symtab *s; | |
2974 | ||
d790cf0a DE |
2975 | ALL_OBJFILE_PRIMARY_SYMTABS (objfile, s) |
2976 | { | |
2977 | struct blockvector *bv = BLOCKVECTOR (s); | |
2978 | const struct block *block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
2979 | struct symbol *sym = lookup_block_symbol (block, name, VAR_DOMAIN); | |
2980 | ||
2981 | if (sym) | |
2982 | return sym->symtab->filename; | |
2983 | } | |
96408a79 SA |
2984 | return NULL; |
2985 | } | |
9291a0cd TT |
2986 | |
2987 | if (!find_slot_in_mapped_hash (dwarf2_per_objfile->index_table, | |
2988 | name, &vec)) | |
2989 | return NULL; | |
2990 | ||
2991 | /* Note that this just looks at the very first one named NAME -- but | |
2992 | actually we are looking for a function. find_main_filename | |
2993 | should be rewritten so that it doesn't require a custom hook. It | |
2994 | could just use the ordinary symbol tables. */ | |
2995 | /* vec[0] is the length, which must always be >0. */ | |
156942c7 | 2996 | per_cu = dw2_get_cu (GDB_INDEX_CU_VALUE (MAYBE_SWAP (vec[1]))); |
9291a0cd | 2997 | |
356d9f9d TT |
2998 | if (per_cu->v.quick->symtab != NULL) |
2999 | return per_cu->v.quick->symtab->filename; | |
3000 | ||
663b969e TT |
3001 | init_cutu_and_read_dies (per_cu, 0, 0, dw2_get_primary_filename_reader, |
3002 | &filename); | |
9291a0cd | 3003 | |
356d9f9d | 3004 | return filename; |
9291a0cd TT |
3005 | } |
3006 | ||
3007 | static void | |
40658b94 PH |
3008 | dw2_map_matching_symbols (const char * name, domain_enum namespace, |
3009 | struct objfile *objfile, int global, | |
3010 | int (*callback) (struct block *, | |
3011 | struct symbol *, void *), | |
2edb89d3 JK |
3012 | void *data, symbol_compare_ftype *match, |
3013 | symbol_compare_ftype *ordered_compare) | |
9291a0cd | 3014 | { |
40658b94 | 3015 | /* Currently unimplemented; used for Ada. The function can be called if the |
a9e6a4bb JK |
3016 | current language is Ada for a non-Ada objfile using GNU index. As Ada |
3017 | does not look for non-Ada symbols this function should just return. */ | |
9291a0cd TT |
3018 | } |
3019 | ||
3020 | static void | |
f8eba3c6 TT |
3021 | dw2_expand_symtabs_matching |
3022 | (struct objfile *objfile, | |
3023 | int (*file_matcher) (const char *, void *), | |
e078317b | 3024 | int (*name_matcher) (const char *, void *), |
f8eba3c6 TT |
3025 | enum search_domain kind, |
3026 | void *data) | |
9291a0cd TT |
3027 | { |
3028 | int i; | |
3029 | offset_type iter; | |
4b5246aa | 3030 | struct mapped_index *index; |
9291a0cd TT |
3031 | |
3032 | dw2_setup (objfile); | |
ae2de4f8 DE |
3033 | |
3034 | /* index_table is NULL if OBJF_READNOW. */ | |
9291a0cd TT |
3035 | if (!dwarf2_per_objfile->index_table) |
3036 | return; | |
4b5246aa | 3037 | index = dwarf2_per_objfile->index_table; |
9291a0cd | 3038 | |
7b08b9eb | 3039 | if (file_matcher != NULL) |
24c79950 TT |
3040 | { |
3041 | struct cleanup *cleanup; | |
3042 | htab_t visited_found, visited_not_found; | |
3043 | ||
3044 | visited_found = htab_create_alloc (10, | |
3045 | htab_hash_pointer, htab_eq_pointer, | |
3046 | NULL, xcalloc, xfree); | |
3047 | cleanup = make_cleanup_htab_delete (visited_found); | |
3048 | visited_not_found = htab_create_alloc (10, | |
3049 | htab_hash_pointer, htab_eq_pointer, | |
3050 | NULL, xcalloc, xfree); | |
3051 | make_cleanup_htab_delete (visited_not_found); | |
3052 | ||
3053 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
3054 | + dwarf2_per_objfile->n_type_units); ++i) | |
3055 | { | |
3056 | int j; | |
3057 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); | |
3058 | struct quick_file_names *file_data; | |
3059 | void **slot; | |
7b08b9eb | 3060 | |
24c79950 | 3061 | per_cu->v.quick->mark = 0; |
3d7bb9d9 | 3062 | |
24c79950 TT |
3063 | /* We only need to look at symtabs not already expanded. */ |
3064 | if (per_cu->v.quick->symtab) | |
3065 | continue; | |
7b08b9eb | 3066 | |
24c79950 TT |
3067 | file_data = dw2_get_file_names (objfile, per_cu); |
3068 | if (file_data == NULL) | |
3069 | continue; | |
7b08b9eb | 3070 | |
24c79950 TT |
3071 | if (htab_find (visited_not_found, file_data) != NULL) |
3072 | continue; | |
3073 | else if (htab_find (visited_found, file_data) != NULL) | |
3074 | { | |
3075 | per_cu->v.quick->mark = 1; | |
3076 | continue; | |
3077 | } | |
3078 | ||
3079 | for (j = 0; j < file_data->num_file_names; ++j) | |
3080 | { | |
3081 | if (file_matcher (file_data->file_names[j], data)) | |
3082 | { | |
3083 | per_cu->v.quick->mark = 1; | |
3084 | break; | |
3085 | } | |
3086 | } | |
3087 | ||
3088 | slot = htab_find_slot (per_cu->v.quick->mark | |
3089 | ? visited_found | |
3090 | : visited_not_found, | |
3091 | file_data, INSERT); | |
3092 | *slot = file_data; | |
3093 | } | |
3094 | ||
3095 | do_cleanups (cleanup); | |
3096 | } | |
9291a0cd | 3097 | |
3876f04e | 3098 | for (iter = 0; iter < index->symbol_table_slots; ++iter) |
9291a0cd TT |
3099 | { |
3100 | offset_type idx = 2 * iter; | |
3101 | const char *name; | |
3102 | offset_type *vec, vec_len, vec_idx; | |
3103 | ||
3876f04e | 3104 | if (index->symbol_table[idx] == 0 && index->symbol_table[idx + 1] == 0) |
9291a0cd TT |
3105 | continue; |
3106 | ||
3876f04e | 3107 | name = index->constant_pool + MAYBE_SWAP (index->symbol_table[idx]); |
9291a0cd | 3108 | |
e078317b | 3109 | if (! (*name_matcher) (name, data)) |
9291a0cd TT |
3110 | continue; |
3111 | ||
3112 | /* The name was matched, now expand corresponding CUs that were | |
3113 | marked. */ | |
4b5246aa | 3114 | vec = (offset_type *) (index->constant_pool |
3876f04e | 3115 | + MAYBE_SWAP (index->symbol_table[idx + 1])); |
9291a0cd TT |
3116 | vec_len = MAYBE_SWAP (vec[0]); |
3117 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
3118 | { | |
e254ef6a | 3119 | struct dwarf2_per_cu_data *per_cu; |
156942c7 DE |
3120 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[vec_idx + 1]); |
3121 | gdb_index_symbol_kind symbol_kind = | |
3122 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3123 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
3124 | ||
3125 | /* Don't crash on bad data. */ | |
3126 | if (cu_index >= (dwarf2_per_objfile->n_comp_units | |
667e0a4b | 3127 | + dwarf2_per_objfile->n_type_units)) |
156942c7 | 3128 | continue; |
1fd400ff | 3129 | |
156942c7 DE |
3130 | /* Only check the symbol's kind if it has one. |
3131 | Indices prior to version 7 don't record it. */ | |
3132 | if (index->version >= 7) | |
3133 | { | |
3134 | switch (kind) | |
3135 | { | |
3136 | case VARIABLES_DOMAIN: | |
3137 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
3138 | continue; | |
3139 | break; | |
3140 | case FUNCTIONS_DOMAIN: | |
3141 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
3142 | continue; | |
3143 | break; | |
3144 | case TYPES_DOMAIN: | |
3145 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3146 | continue; | |
3147 | break; | |
3148 | default: | |
3149 | break; | |
3150 | } | |
3151 | } | |
3152 | ||
3153 | per_cu = dw2_get_cu (cu_index); | |
7b08b9eb | 3154 | if (file_matcher == NULL || per_cu->v.quick->mark) |
a0f42c21 | 3155 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
3156 | } |
3157 | } | |
3158 | } | |
3159 | ||
9703b513 TT |
3160 | /* A helper for dw2_find_pc_sect_symtab which finds the most specific |
3161 | symtab. */ | |
3162 | ||
3163 | static struct symtab * | |
3164 | recursively_find_pc_sect_symtab (struct symtab *symtab, CORE_ADDR pc) | |
3165 | { | |
3166 | int i; | |
3167 | ||
3168 | if (BLOCKVECTOR (symtab) != NULL | |
3169 | && blockvector_contains_pc (BLOCKVECTOR (symtab), pc)) | |
3170 | return symtab; | |
3171 | ||
a3ec0bb1 DE |
3172 | if (symtab->includes == NULL) |
3173 | return NULL; | |
3174 | ||
9703b513 TT |
3175 | for (i = 0; symtab->includes[i]; ++i) |
3176 | { | |
a3ec0bb1 | 3177 | struct symtab *s = symtab->includes[i]; |
9703b513 TT |
3178 | |
3179 | s = recursively_find_pc_sect_symtab (s, pc); | |
3180 | if (s != NULL) | |
3181 | return s; | |
3182 | } | |
3183 | ||
3184 | return NULL; | |
3185 | } | |
3186 | ||
9291a0cd TT |
3187 | static struct symtab * |
3188 | dw2_find_pc_sect_symtab (struct objfile *objfile, | |
3189 | struct minimal_symbol *msymbol, | |
3190 | CORE_ADDR pc, | |
3191 | struct obj_section *section, | |
3192 | int warn_if_readin) | |
3193 | { | |
3194 | struct dwarf2_per_cu_data *data; | |
9703b513 | 3195 | struct symtab *result; |
9291a0cd TT |
3196 | |
3197 | dw2_setup (objfile); | |
3198 | ||
3199 | if (!objfile->psymtabs_addrmap) | |
3200 | return NULL; | |
3201 | ||
3202 | data = addrmap_find (objfile->psymtabs_addrmap, pc); | |
3203 | if (!data) | |
3204 | return NULL; | |
3205 | ||
3206 | if (warn_if_readin && data->v.quick->symtab) | |
abebb8b0 | 3207 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), |
9291a0cd TT |
3208 | paddress (get_objfile_arch (objfile), pc)); |
3209 | ||
9703b513 TT |
3210 | result = recursively_find_pc_sect_symtab (dw2_instantiate_symtab (data), pc); |
3211 | gdb_assert (result != NULL); | |
3212 | return result; | |
9291a0cd TT |
3213 | } |
3214 | ||
9291a0cd | 3215 | static void |
44b13c5a | 3216 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, |
74e2f255 | 3217 | void *data, int need_fullname) |
9291a0cd TT |
3218 | { |
3219 | int i; | |
24c79950 TT |
3220 | struct cleanup *cleanup; |
3221 | htab_t visited = htab_create_alloc (10, htab_hash_pointer, htab_eq_pointer, | |
3222 | NULL, xcalloc, xfree); | |
9291a0cd | 3223 | |
24c79950 | 3224 | cleanup = make_cleanup_htab_delete (visited); |
9291a0cd | 3225 | dw2_setup (objfile); |
ae2de4f8 | 3226 | |
24c79950 TT |
3227 | /* We can ignore file names coming from already-expanded CUs. */ |
3228 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
3229 | + dwarf2_per_objfile->n_type_units); ++i) | |
3230 | { | |
3231 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); | |
3232 | ||
3233 | if (per_cu->v.quick->symtab) | |
3234 | { | |
3235 | void **slot = htab_find_slot (visited, per_cu->v.quick->file_names, | |
3236 | INSERT); | |
3237 | ||
3238 | *slot = per_cu->v.quick->file_names; | |
3239 | } | |
3240 | } | |
3241 | ||
1fd400ff | 3242 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
d467dd73 | 3243 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd TT |
3244 | { |
3245 | int j; | |
e254ef6a | 3246 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
7b9f3c50 | 3247 | struct quick_file_names *file_data; |
24c79950 | 3248 | void **slot; |
9291a0cd | 3249 | |
3d7bb9d9 | 3250 | /* We only need to look at symtabs not already expanded. */ |
e254ef6a | 3251 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
3252 | continue; |
3253 | ||
7b9f3c50 DE |
3254 | file_data = dw2_get_file_names (objfile, per_cu); |
3255 | if (file_data == NULL) | |
9291a0cd TT |
3256 | continue; |
3257 | ||
24c79950 TT |
3258 | slot = htab_find_slot (visited, file_data, INSERT); |
3259 | if (*slot) | |
3260 | { | |
3261 | /* Already visited. */ | |
3262 | continue; | |
3263 | } | |
3264 | *slot = file_data; | |
3265 | ||
7b9f3c50 | 3266 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3267 | { |
74e2f255 DE |
3268 | const char *this_real_name; |
3269 | ||
3270 | if (need_fullname) | |
3271 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
3272 | else | |
3273 | this_real_name = NULL; | |
7b9f3c50 | 3274 | (*fun) (file_data->file_names[j], this_real_name, data); |
9291a0cd TT |
3275 | } |
3276 | } | |
24c79950 TT |
3277 | |
3278 | do_cleanups (cleanup); | |
9291a0cd TT |
3279 | } |
3280 | ||
3281 | static int | |
3282 | dw2_has_symbols (struct objfile *objfile) | |
3283 | { | |
3284 | return 1; | |
3285 | } | |
3286 | ||
3287 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
3288 | { | |
3289 | dw2_has_symbols, | |
3290 | dw2_find_last_source_symtab, | |
3291 | dw2_forget_cached_source_info, | |
f8eba3c6 | 3292 | dw2_map_symtabs_matching_filename, |
9291a0cd | 3293 | dw2_lookup_symbol, |
774b6a14 | 3294 | dw2_pre_expand_symtabs_matching, |
9291a0cd TT |
3295 | dw2_print_stats, |
3296 | dw2_dump, | |
3297 | dw2_relocate, | |
3298 | dw2_expand_symtabs_for_function, | |
3299 | dw2_expand_all_symtabs, | |
3300 | dw2_expand_symtabs_with_filename, | |
3301 | dw2_find_symbol_file, | |
40658b94 | 3302 | dw2_map_matching_symbols, |
9291a0cd TT |
3303 | dw2_expand_symtabs_matching, |
3304 | dw2_find_pc_sect_symtab, | |
9291a0cd TT |
3305 | dw2_map_symbol_filenames |
3306 | }; | |
3307 | ||
3308 | /* Initialize for reading DWARF for this objfile. Return 0 if this | |
3309 | file will use psymtabs, or 1 if using the GNU index. */ | |
3310 | ||
3311 | int | |
3312 | dwarf2_initialize_objfile (struct objfile *objfile) | |
3313 | { | |
3314 | /* If we're about to read full symbols, don't bother with the | |
3315 | indices. In this case we also don't care if some other debug | |
3316 | format is making psymtabs, because they are all about to be | |
3317 | expanded anyway. */ | |
3318 | if ((objfile->flags & OBJF_READNOW)) | |
3319 | { | |
3320 | int i; | |
3321 | ||
3322 | dwarf2_per_objfile->using_index = 1; | |
3323 | create_all_comp_units (objfile); | |
0e50663e | 3324 | create_all_type_units (objfile); |
7b9f3c50 DE |
3325 | dwarf2_per_objfile->quick_file_names_table = |
3326 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd | 3327 | |
1fd400ff | 3328 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
d467dd73 | 3329 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 3330 | { |
e254ef6a | 3331 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 3332 | |
e254ef6a DE |
3333 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
3334 | struct dwarf2_per_cu_quick_data); | |
9291a0cd TT |
3335 | } |
3336 | ||
3337 | /* Return 1 so that gdb sees the "quick" functions. However, | |
3338 | these functions will be no-ops because we will have expanded | |
3339 | all symtabs. */ | |
3340 | return 1; | |
3341 | } | |
3342 | ||
3343 | if (dwarf2_read_index (objfile)) | |
3344 | return 1; | |
3345 | ||
9291a0cd TT |
3346 | return 0; |
3347 | } | |
3348 | ||
3349 | \f | |
3350 | ||
dce234bc PP |
3351 | /* Build a partial symbol table. */ |
3352 | ||
3353 | void | |
f29dff0a | 3354 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 3355 | { |
f29dff0a | 3356 | if (objfile->global_psymbols.size == 0 && objfile->static_psymbols.size == 0) |
c906108c SS |
3357 | { |
3358 | init_psymbol_list (objfile, 1024); | |
3359 | } | |
3360 | ||
d146bf1e | 3361 | dwarf2_build_psymtabs_hard (objfile); |
c906108c | 3362 | } |
c906108c | 3363 | |
1ce1cefd DE |
3364 | /* Return the total length of the CU described by HEADER. */ |
3365 | ||
3366 | static unsigned int | |
3367 | get_cu_length (const struct comp_unit_head *header) | |
3368 | { | |
3369 | return header->initial_length_size + header->length; | |
3370 | } | |
3371 | ||
45452591 DE |
3372 | /* Return TRUE if OFFSET is within CU_HEADER. */ |
3373 | ||
3374 | static inline int | |
b64f50a1 | 3375 | offset_in_cu_p (const struct comp_unit_head *cu_header, sect_offset offset) |
45452591 | 3376 | { |
b64f50a1 | 3377 | sect_offset bottom = { cu_header->offset.sect_off }; |
1ce1cefd | 3378 | sect_offset top = { cu_header->offset.sect_off + get_cu_length (cu_header) }; |
9a619af0 | 3379 | |
b64f50a1 | 3380 | return (offset.sect_off >= bottom.sect_off && offset.sect_off < top.sect_off); |
45452591 DE |
3381 | } |
3382 | ||
3b80fe9b DE |
3383 | /* Find the base address of the compilation unit for range lists and |
3384 | location lists. It will normally be specified by DW_AT_low_pc. | |
3385 | In DWARF-3 draft 4, the base address could be overridden by | |
3386 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
3387 | compilation units with discontinuous ranges. */ | |
3388 | ||
3389 | static void | |
3390 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
3391 | { | |
3392 | struct attribute *attr; | |
3393 | ||
3394 | cu->base_known = 0; | |
3395 | cu->base_address = 0; | |
3396 | ||
3397 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
3398 | if (attr) | |
3399 | { | |
3400 | cu->base_address = DW_ADDR (attr); | |
3401 | cu->base_known = 1; | |
3402 | } | |
3403 | else | |
3404 | { | |
3405 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
3406 | if (attr) | |
3407 | { | |
3408 | cu->base_address = DW_ADDR (attr); | |
3409 | cu->base_known = 1; | |
3410 | } | |
3411 | } | |
3412 | } | |
3413 | ||
93311388 DE |
3414 | /* Read in the comp unit header information from the debug_info at info_ptr. |
3415 | NOTE: This leaves members offset, first_die_offset to be filled in | |
3416 | by the caller. */ | |
107d2387 | 3417 | |
fe1b8b76 | 3418 | static gdb_byte * |
107d2387 | 3419 | read_comp_unit_head (struct comp_unit_head *cu_header, |
fe1b8b76 | 3420 | gdb_byte *info_ptr, bfd *abfd) |
107d2387 AC |
3421 | { |
3422 | int signed_addr; | |
891d2f0b | 3423 | unsigned int bytes_read; |
c764a876 DE |
3424 | |
3425 | cu_header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
3426 | cu_header->initial_length_size = bytes_read; | |
3427 | cu_header->offset_size = (bytes_read == 4) ? 4 : 8; | |
613e1657 | 3428 | info_ptr += bytes_read; |
107d2387 AC |
3429 | cu_header->version = read_2_bytes (abfd, info_ptr); |
3430 | info_ptr += 2; | |
b64f50a1 JK |
3431 | cu_header->abbrev_offset.sect_off = read_offset (abfd, info_ptr, cu_header, |
3432 | &bytes_read); | |
613e1657 | 3433 | info_ptr += bytes_read; |
107d2387 AC |
3434 | cu_header->addr_size = read_1_byte (abfd, info_ptr); |
3435 | info_ptr += 1; | |
3436 | signed_addr = bfd_get_sign_extend_vma (abfd); | |
3437 | if (signed_addr < 0) | |
8e65ff28 | 3438 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3439 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 | 3440 | cu_header->signed_addr_p = signed_addr; |
c764a876 | 3441 | |
107d2387 AC |
3442 | return info_ptr; |
3443 | } | |
3444 | ||
9ff913ba DE |
3445 | /* Subroutine of read_and_check_comp_unit_head and |
3446 | read_and_check_type_unit_head to simplify them. | |
3447 | Perform various error checking on the header. */ | |
3448 | ||
3449 | static void | |
3450 | error_check_comp_unit_head (struct comp_unit_head *header, | |
4bdcc0c1 DE |
3451 | struct dwarf2_section_info *section, |
3452 | struct dwarf2_section_info *abbrev_section) | |
9ff913ba DE |
3453 | { |
3454 | bfd *abfd = section->asection->owner; | |
3455 | const char *filename = bfd_get_filename (abfd); | |
3456 | ||
3457 | if (header->version != 2 && header->version != 3 && header->version != 4) | |
3458 | error (_("Dwarf Error: wrong version in compilation unit header " | |
3459 | "(is %d, should be 2, 3, or 4) [in module %s]"), header->version, | |
3460 | filename); | |
3461 | ||
b64f50a1 | 3462 | if (header->abbrev_offset.sect_off |
9ff913ba DE |
3463 | >= dwarf2_section_size (dwarf2_per_objfile->objfile, |
3464 | &dwarf2_per_objfile->abbrev)) | |
3465 | error (_("Dwarf Error: bad offset (0x%lx) in compilation unit header " | |
3466 | "(offset 0x%lx + 6) [in module %s]"), | |
b64f50a1 | 3467 | (long) header->abbrev_offset.sect_off, (long) header->offset.sect_off, |
9ff913ba DE |
3468 | filename); |
3469 | ||
3470 | /* Cast to unsigned long to use 64-bit arithmetic when possible to | |
3471 | avoid potential 32-bit overflow. */ | |
1ce1cefd | 3472 | if (((unsigned long) header->offset.sect_off + get_cu_length (header)) |
9ff913ba DE |
3473 | > section->size) |
3474 | error (_("Dwarf Error: bad length (0x%lx) in compilation unit header " | |
3475 | "(offset 0x%lx + 0) [in module %s]"), | |
b64f50a1 | 3476 | (long) header->length, (long) header->offset.sect_off, |
9ff913ba DE |
3477 | filename); |
3478 | } | |
3479 | ||
3480 | /* Read in a CU/TU header and perform some basic error checking. | |
3481 | The contents of the header are stored in HEADER. | |
3482 | The result is a pointer to the start of the first DIE. */ | |
adabb602 | 3483 | |
fe1b8b76 | 3484 | static gdb_byte * |
9ff913ba DE |
3485 | read_and_check_comp_unit_head (struct comp_unit_head *header, |
3486 | struct dwarf2_section_info *section, | |
4bdcc0c1 | 3487 | struct dwarf2_section_info *abbrev_section, |
9ff913ba DE |
3488 | gdb_byte *info_ptr, |
3489 | int is_debug_types_section) | |
72bf9492 | 3490 | { |
fe1b8b76 | 3491 | gdb_byte *beg_of_comp_unit = info_ptr; |
9ff913ba | 3492 | bfd *abfd = section->asection->owner; |
72bf9492 | 3493 | |
b64f50a1 | 3494 | header->offset.sect_off = beg_of_comp_unit - section->buffer; |
adabb602 | 3495 | |
72bf9492 DJ |
3496 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); |
3497 | ||
460c1c54 CC |
3498 | /* If we're reading a type unit, skip over the signature and |
3499 | type_offset fields. */ | |
b0df02fd | 3500 | if (is_debug_types_section) |
460c1c54 CC |
3501 | info_ptr += 8 /*signature*/ + header->offset_size; |
3502 | ||
b64f50a1 | 3503 | header->first_die_offset.cu_off = info_ptr - beg_of_comp_unit; |
adabb602 | 3504 | |
4bdcc0c1 | 3505 | error_check_comp_unit_head (header, section, abbrev_section); |
72bf9492 DJ |
3506 | |
3507 | return info_ptr; | |
3508 | } | |
3509 | ||
348e048f DE |
3510 | /* Read in the types comp unit header information from .debug_types entry at |
3511 | types_ptr. The result is a pointer to one past the end of the header. */ | |
3512 | ||
3513 | static gdb_byte * | |
9ff913ba DE |
3514 | read_and_check_type_unit_head (struct comp_unit_head *header, |
3515 | struct dwarf2_section_info *section, | |
4bdcc0c1 | 3516 | struct dwarf2_section_info *abbrev_section, |
9ff913ba | 3517 | gdb_byte *info_ptr, |
dee91e82 DE |
3518 | ULONGEST *signature, |
3519 | cu_offset *type_offset_in_tu) | |
348e048f | 3520 | { |
9ff913ba DE |
3521 | gdb_byte *beg_of_comp_unit = info_ptr; |
3522 | bfd *abfd = section->asection->owner; | |
348e048f | 3523 | |
b64f50a1 | 3524 | header->offset.sect_off = beg_of_comp_unit - section->buffer; |
348e048f | 3525 | |
9ff913ba | 3526 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); |
348e048f | 3527 | |
9ff913ba DE |
3528 | /* If we're reading a type unit, skip over the signature and |
3529 | type_offset fields. */ | |
3530 | if (signature != NULL) | |
3531 | *signature = read_8_bytes (abfd, info_ptr); | |
3532 | info_ptr += 8; | |
dee91e82 DE |
3533 | if (type_offset_in_tu != NULL) |
3534 | type_offset_in_tu->cu_off = read_offset_1 (abfd, info_ptr, | |
3535 | header->offset_size); | |
9ff913ba DE |
3536 | info_ptr += header->offset_size; |
3537 | ||
b64f50a1 | 3538 | header->first_die_offset.cu_off = info_ptr - beg_of_comp_unit; |
348e048f | 3539 | |
4bdcc0c1 | 3540 | error_check_comp_unit_head (header, section, abbrev_section); |
9ff913ba DE |
3541 | |
3542 | return info_ptr; | |
348e048f DE |
3543 | } |
3544 | ||
aaa75496 JB |
3545 | /* Allocate a new partial symtab for file named NAME and mark this new |
3546 | partial symtab as being an include of PST. */ | |
3547 | ||
3548 | static void | |
3549 | dwarf2_create_include_psymtab (char *name, struct partial_symtab *pst, | |
3550 | struct objfile *objfile) | |
3551 | { | |
3552 | struct partial_symtab *subpst = allocate_psymtab (name, objfile); | |
3553 | ||
3554 | subpst->section_offsets = pst->section_offsets; | |
3555 | subpst->textlow = 0; | |
3556 | subpst->texthigh = 0; | |
3557 | ||
3558 | subpst->dependencies = (struct partial_symtab **) | |
3559 | obstack_alloc (&objfile->objfile_obstack, | |
3560 | sizeof (struct partial_symtab *)); | |
3561 | subpst->dependencies[0] = pst; | |
3562 | subpst->number_of_dependencies = 1; | |
3563 | ||
3564 | subpst->globals_offset = 0; | |
3565 | subpst->n_global_syms = 0; | |
3566 | subpst->statics_offset = 0; | |
3567 | subpst->n_static_syms = 0; | |
3568 | subpst->symtab = NULL; | |
3569 | subpst->read_symtab = pst->read_symtab; | |
3570 | subpst->readin = 0; | |
3571 | ||
3572 | /* No private part is necessary for include psymtabs. This property | |
3573 | can be used to differentiate between such include psymtabs and | |
10b3939b | 3574 | the regular ones. */ |
58a9656e | 3575 | subpst->read_symtab_private = NULL; |
aaa75496 JB |
3576 | } |
3577 | ||
3578 | /* Read the Line Number Program data and extract the list of files | |
3579 | included by the source file represented by PST. Build an include | |
d85a05f0 | 3580 | partial symtab for each of these included files. */ |
aaa75496 JB |
3581 | |
3582 | static void | |
3583 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 DE |
3584 | struct die_info *die, |
3585 | struct partial_symtab *pst) | |
aaa75496 | 3586 | { |
d85a05f0 DJ |
3587 | struct line_header *lh = NULL; |
3588 | struct attribute *attr; | |
aaa75496 | 3589 | |
d85a05f0 DJ |
3590 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
3591 | if (attr) | |
3019eac3 | 3592 | lh = dwarf_decode_line_header (DW_UNSND (attr), cu); |
aaa75496 JB |
3593 | if (lh == NULL) |
3594 | return; /* No linetable, so no includes. */ | |
3595 | ||
c6da4cef | 3596 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). */ |
f3f5162e | 3597 | dwarf_decode_lines (lh, pst->dirname, cu, pst, 1); |
aaa75496 JB |
3598 | |
3599 | free_line_header (lh); | |
3600 | } | |
3601 | ||
348e048f | 3602 | static hashval_t |
52dc124a | 3603 | hash_signatured_type (const void *item) |
348e048f | 3604 | { |
52dc124a | 3605 | const struct signatured_type *sig_type = item; |
9a619af0 | 3606 | |
348e048f | 3607 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 3608 | return sig_type->signature; |
348e048f DE |
3609 | } |
3610 | ||
3611 | static int | |
52dc124a | 3612 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f DE |
3613 | { |
3614 | const struct signatured_type *lhs = item_lhs; | |
3615 | const struct signatured_type *rhs = item_rhs; | |
9a619af0 | 3616 | |
348e048f DE |
3617 | return lhs->signature == rhs->signature; |
3618 | } | |
3619 | ||
1fd400ff TT |
3620 | /* Allocate a hash table for signatured types. */ |
3621 | ||
3622 | static htab_t | |
673bfd45 | 3623 | allocate_signatured_type_table (struct objfile *objfile) |
1fd400ff TT |
3624 | { |
3625 | return htab_create_alloc_ex (41, | |
52dc124a DE |
3626 | hash_signatured_type, |
3627 | eq_signatured_type, | |
1fd400ff TT |
3628 | NULL, |
3629 | &objfile->objfile_obstack, | |
3630 | hashtab_obstack_allocate, | |
3631 | dummy_obstack_deallocate); | |
3632 | } | |
3633 | ||
d467dd73 | 3634 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
3635 | |
3636 | static int | |
d467dd73 | 3637 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff TT |
3638 | { |
3639 | struct signatured_type *sigt = *slot; | |
3640 | struct dwarf2_per_cu_data ***datap = datum; | |
3641 | ||
3642 | **datap = &sigt->per_cu; | |
3643 | ++*datap; | |
3644 | ||
3645 | return 1; | |
3646 | } | |
3647 | ||
3019eac3 DE |
3648 | /* Create the hash table of all entries in the .debug_types section. |
3649 | DWO_FILE is a pointer to the DWO file for .debug_types.dwo, NULL otherwise. | |
3650 | The result is a pointer to the hash table or NULL if there are | |
3651 | no types. */ | |
348e048f | 3652 | |
3019eac3 DE |
3653 | static htab_t |
3654 | create_debug_types_hash_table (struct dwo_file *dwo_file, | |
3655 | VEC (dwarf2_section_info_def) *types) | |
348e048f | 3656 | { |
3019eac3 | 3657 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8b70b953 | 3658 | htab_t types_htab = NULL; |
8b70b953 TT |
3659 | int ix; |
3660 | struct dwarf2_section_info *section; | |
4bdcc0c1 | 3661 | struct dwarf2_section_info *abbrev_section; |
348e048f | 3662 | |
3019eac3 DE |
3663 | if (VEC_empty (dwarf2_section_info_def, types)) |
3664 | return NULL; | |
348e048f | 3665 | |
4bdcc0c1 DE |
3666 | abbrev_section = (dwo_file != NULL |
3667 | ? &dwo_file->sections.abbrev | |
3668 | : &dwarf2_per_objfile->abbrev); | |
3669 | ||
09406207 DE |
3670 | if (dwarf2_read_debug) |
3671 | fprintf_unfiltered (gdb_stdlog, "Reading .debug_types%s for %s:\n", | |
3672 | dwo_file ? ".dwo" : "", | |
3673 | bfd_get_filename (abbrev_section->asection->owner)); | |
3674 | ||
8b70b953 | 3675 | for (ix = 0; |
3019eac3 | 3676 | VEC_iterate (dwarf2_section_info_def, types, ix, section); |
8b70b953 TT |
3677 | ++ix) |
3678 | { | |
3019eac3 | 3679 | bfd *abfd; |
8b70b953 | 3680 | gdb_byte *info_ptr, *end_ptr; |
348e048f | 3681 | |
8b70b953 TT |
3682 | dwarf2_read_section (objfile, section); |
3683 | info_ptr = section->buffer; | |
348e048f | 3684 | |
8b70b953 TT |
3685 | if (info_ptr == NULL) |
3686 | continue; | |
348e048f | 3687 | |
3019eac3 DE |
3688 | /* We can't set abfd until now because the section may be empty or |
3689 | not present, in which case section->asection will be NULL. */ | |
3690 | abfd = section->asection->owner; | |
3691 | ||
8b70b953 | 3692 | if (types_htab == NULL) |
3019eac3 DE |
3693 | { |
3694 | if (dwo_file) | |
3695 | types_htab = allocate_dwo_unit_table (objfile); | |
3696 | else | |
3697 | types_htab = allocate_signatured_type_table (objfile); | |
3698 | } | |
348e048f | 3699 | |
dee91e82 DE |
3700 | /* We don't use init_cutu_and_read_dies_simple, or some such, here |
3701 | because we don't need to read any dies: the signature is in the | |
3702 | header. */ | |
8b70b953 TT |
3703 | |
3704 | end_ptr = info_ptr + section->size; | |
3705 | while (info_ptr < end_ptr) | |
3706 | { | |
b64f50a1 | 3707 | sect_offset offset; |
3019eac3 | 3708 | cu_offset type_offset_in_tu; |
8b70b953 | 3709 | ULONGEST signature; |
52dc124a | 3710 | struct signatured_type *sig_type; |
3019eac3 | 3711 | struct dwo_unit *dwo_tu; |
8b70b953 TT |
3712 | void **slot; |
3713 | gdb_byte *ptr = info_ptr; | |
9ff913ba | 3714 | struct comp_unit_head header; |
dee91e82 | 3715 | unsigned int length; |
348e048f | 3716 | |
b64f50a1 | 3717 | offset.sect_off = ptr - section->buffer; |
348e048f | 3718 | |
8b70b953 | 3719 | /* We need to read the type's signature in order to build the hash |
9ff913ba | 3720 | table, but we don't need anything else just yet. */ |
348e048f | 3721 | |
4bdcc0c1 DE |
3722 | ptr = read_and_check_type_unit_head (&header, section, |
3723 | abbrev_section, ptr, | |
3019eac3 | 3724 | &signature, &type_offset_in_tu); |
6caca83c | 3725 | |
1ce1cefd | 3726 | length = get_cu_length (&header); |
dee91e82 | 3727 | |
6caca83c | 3728 | /* Skip dummy type units. */ |
dee91e82 DE |
3729 | if (ptr >= info_ptr + length |
3730 | || peek_abbrev_code (abfd, ptr) == 0) | |
6caca83c | 3731 | { |
1ce1cefd | 3732 | info_ptr += length; |
6caca83c CC |
3733 | continue; |
3734 | } | |
8b70b953 | 3735 | |
3019eac3 DE |
3736 | if (dwo_file) |
3737 | { | |
3738 | sig_type = NULL; | |
3739 | dwo_tu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
3740 | struct dwo_unit); | |
3741 | dwo_tu->dwo_file = dwo_file; | |
3742 | dwo_tu->signature = signature; | |
3743 | dwo_tu->type_offset_in_tu = type_offset_in_tu; | |
3744 | dwo_tu->info_or_types_section = section; | |
3745 | dwo_tu->offset = offset; | |
3746 | dwo_tu->length = length; | |
3747 | } | |
3748 | else | |
3749 | { | |
3750 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
3751 | The real type_offset is in the DWO file. */ | |
3752 | dwo_tu = NULL; | |
3753 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
3754 | struct signatured_type); | |
3755 | sig_type->signature = signature; | |
3756 | sig_type->type_offset_in_tu = type_offset_in_tu; | |
3757 | sig_type->per_cu.objfile = objfile; | |
3758 | sig_type->per_cu.is_debug_types = 1; | |
3759 | sig_type->per_cu.info_or_types_section = section; | |
3760 | sig_type->per_cu.offset = offset; | |
3761 | sig_type->per_cu.length = length; | |
3762 | } | |
8b70b953 | 3763 | |
3019eac3 DE |
3764 | slot = htab_find_slot (types_htab, |
3765 | dwo_file ? (void*) dwo_tu : (void *) sig_type, | |
3766 | INSERT); | |
8b70b953 TT |
3767 | gdb_assert (slot != NULL); |
3768 | if (*slot != NULL) | |
3769 | { | |
3019eac3 DE |
3770 | sect_offset dup_offset; |
3771 | ||
3772 | if (dwo_file) | |
3773 | { | |
3774 | const struct dwo_unit *dup_tu = *slot; | |
3775 | ||
3776 | dup_offset = dup_tu->offset; | |
3777 | } | |
3778 | else | |
3779 | { | |
3780 | const struct signatured_type *dup_tu = *slot; | |
3781 | ||
3782 | dup_offset = dup_tu->per_cu.offset; | |
3783 | } | |
b3c8eb43 | 3784 | |
8b70b953 TT |
3785 | complaint (&symfile_complaints, |
3786 | _("debug type entry at offset 0x%x is duplicate to the " | |
3787 | "entry at offset 0x%x, signature 0x%s"), | |
3019eac3 | 3788 | offset.sect_off, dup_offset.sect_off, |
8b70b953 | 3789 | phex (signature, sizeof (signature))); |
8b70b953 | 3790 | } |
3019eac3 | 3791 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; |
348e048f | 3792 | |
09406207 | 3793 | if (dwarf2_read_debug) |
8b70b953 | 3794 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, signature 0x%s\n", |
b64f50a1 JK |
3795 | offset.sect_off, |
3796 | phex (signature, sizeof (signature))); | |
348e048f | 3797 | |
dee91e82 | 3798 | info_ptr += length; |
8b70b953 | 3799 | } |
348e048f DE |
3800 | } |
3801 | ||
3019eac3 DE |
3802 | return types_htab; |
3803 | } | |
3804 | ||
3805 | /* Create the hash table of all entries in the .debug_types section, | |
3806 | and initialize all_type_units. | |
3807 | The result is zero if there is an error (e.g. missing .debug_types section), | |
3808 | otherwise non-zero. */ | |
3809 | ||
3810 | static int | |
3811 | create_all_type_units (struct objfile *objfile) | |
3812 | { | |
3813 | htab_t types_htab; | |
3814 | struct dwarf2_per_cu_data **iter; | |
3815 | ||
3816 | types_htab = create_debug_types_hash_table (NULL, dwarf2_per_objfile->types); | |
3817 | if (types_htab == NULL) | |
3818 | { | |
3819 | dwarf2_per_objfile->signatured_types = NULL; | |
3820 | return 0; | |
3821 | } | |
3822 | ||
348e048f DE |
3823 | dwarf2_per_objfile->signatured_types = types_htab; |
3824 | ||
d467dd73 DE |
3825 | dwarf2_per_objfile->n_type_units = htab_elements (types_htab); |
3826 | dwarf2_per_objfile->all_type_units | |
1fd400ff | 3827 | = obstack_alloc (&objfile->objfile_obstack, |
d467dd73 | 3828 | dwarf2_per_objfile->n_type_units |
1fd400ff | 3829 | * sizeof (struct dwarf2_per_cu_data *)); |
d467dd73 DE |
3830 | iter = &dwarf2_per_objfile->all_type_units[0]; |
3831 | htab_traverse_noresize (types_htab, add_signatured_type_cu_to_table, &iter); | |
3832 | gdb_assert (iter - &dwarf2_per_objfile->all_type_units[0] | |
3833 | == dwarf2_per_objfile->n_type_units); | |
1fd400ff | 3834 | |
348e048f DE |
3835 | return 1; |
3836 | } | |
3837 | ||
380bca97 | 3838 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
e319fa28 | 3839 | Returns NULL if signature SIG is not present in the table. */ |
348e048f DE |
3840 | |
3841 | static struct signatured_type * | |
e319fa28 | 3842 | lookup_signatured_type (ULONGEST sig) |
348e048f DE |
3843 | { |
3844 | struct signatured_type find_entry, *entry; | |
3845 | ||
3846 | if (dwarf2_per_objfile->signatured_types == NULL) | |
3847 | { | |
3848 | complaint (&symfile_complaints, | |
55f1336d | 3849 | _("missing `.debug_types' section for DW_FORM_ref_sig8 die")); |
dcc07052 | 3850 | return NULL; |
348e048f DE |
3851 | } |
3852 | ||
3853 | find_entry.signature = sig; | |
3854 | entry = htab_find (dwarf2_per_objfile->signatured_types, &find_entry); | |
3855 | return entry; | |
3856 | } | |
42e7ad6c DE |
3857 | \f |
3858 | /* Low level DIE reading support. */ | |
348e048f | 3859 | |
d85a05f0 DJ |
3860 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
3861 | ||
3862 | static void | |
3863 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 3864 | struct dwarf2_cu *cu, |
3019eac3 DE |
3865 | struct dwarf2_section_info *section, |
3866 | struct dwo_file *dwo_file) | |
d85a05f0 | 3867 | { |
fceca515 | 3868 | gdb_assert (section->readin && section->buffer != NULL); |
dee91e82 | 3869 | reader->abfd = section->asection->owner; |
d85a05f0 | 3870 | reader->cu = cu; |
3019eac3 | 3871 | reader->dwo_file = dwo_file; |
dee91e82 DE |
3872 | reader->die_section = section; |
3873 | reader->buffer = section->buffer; | |
f664829e | 3874 | reader->buffer_end = section->buffer + section->size; |
d85a05f0 DJ |
3875 | } |
3876 | ||
fd820528 | 3877 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 3878 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 DE |
3879 | |
3880 | If USE_EXISTING_CU is non-zero, and THIS_CU->cu is non-NULL, then use it. | |
3881 | Otherwise, a new CU is allocated with xmalloc. | |
3882 | ||
3883 | If KEEP is non-zero, then if we allocated a dwarf2_cu we add it to | |
3884 | read_in_chain. Otherwise the dwarf2_cu data is freed at the end. | |
3885 | ||
3886 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
fd820528 | 3887 | linker) then DIE_READER_FUNC will not get called. */ |
aaa75496 | 3888 | |
70221824 | 3889 | static void |
fd820528 DE |
3890 | init_cutu_and_read_dies (struct dwarf2_per_cu_data *this_cu, |
3891 | int use_existing_cu, int keep, | |
3892 | die_reader_func_ftype *die_reader_func, | |
3893 | void *data) | |
c906108c | 3894 | { |
dee91e82 | 3895 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 DE |
3896 | struct dwarf2_section_info *section = this_cu->info_or_types_section; |
3897 | bfd *abfd = section->asection->owner; | |
dee91e82 DE |
3898 | struct dwarf2_cu *cu; |
3899 | gdb_byte *begin_info_ptr, *info_ptr; | |
3900 | struct die_reader_specs reader; | |
d85a05f0 | 3901 | struct die_info *comp_unit_die; |
dee91e82 | 3902 | int has_children; |
d85a05f0 | 3903 | struct attribute *attr; |
dee91e82 DE |
3904 | struct cleanup *cleanups, *free_cu_cleanup = NULL; |
3905 | struct signatured_type *sig_type = NULL; | |
4bdcc0c1 | 3906 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
3907 | /* Non-zero if CU currently points to a DWO file and we need to |
3908 | reread it. When this happens we need to reread the skeleton die | |
3909 | before we can reread the DWO file. */ | |
3910 | int rereading_dwo_cu = 0; | |
c906108c | 3911 | |
09406207 DE |
3912 | if (dwarf2_die_debug) |
3913 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset 0x%x\n", | |
3914 | this_cu->is_debug_types ? "type" : "comp", | |
3915 | this_cu->offset.sect_off); | |
3916 | ||
dee91e82 DE |
3917 | if (use_existing_cu) |
3918 | gdb_assert (keep); | |
23745b47 | 3919 | |
dee91e82 DE |
3920 | cleanups = make_cleanup (null_cleanup, NULL); |
3921 | ||
3922 | /* This is cheap if the section is already read in. */ | |
3923 | dwarf2_read_section (objfile, section); | |
3924 | ||
3925 | begin_info_ptr = info_ptr = section->buffer + this_cu->offset.sect_off; | |
4bdcc0c1 | 3926 | abbrev_section = &dwarf2_per_objfile->abbrev; |
dee91e82 DE |
3927 | |
3928 | if (use_existing_cu && this_cu->cu != NULL) | |
3929 | { | |
3930 | cu = this_cu->cu; | |
42e7ad6c DE |
3931 | |
3932 | /* If this CU is from a DWO file we need to start over, we need to | |
3933 | refetch the attributes from the skeleton CU. | |
3934 | This could be optimized by retrieving those attributes from when we | |
3935 | were here the first time: the previous comp_unit_die was stored in | |
3936 | comp_unit_obstack. But there's no data yet that we need this | |
3937 | optimization. */ | |
3938 | if (cu->dwo_unit != NULL) | |
3939 | rereading_dwo_cu = 1; | |
dee91e82 DE |
3940 | } |
3941 | else | |
3942 | { | |
3943 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
3944 | gdb_assert (this_cu->cu == NULL); | |
3945 | ||
3946 | cu = xmalloc (sizeof (*cu)); | |
3947 | init_one_comp_unit (cu, this_cu); | |
3948 | ||
3949 | /* If an error occurs while loading, release our storage. */ | |
3950 | free_cu_cleanup = make_cleanup (free_heap_comp_unit, cu); | |
42e7ad6c | 3951 | } |
dee91e82 | 3952 | |
42e7ad6c DE |
3953 | if (cu->header.first_die_offset.cu_off != 0 && ! rereading_dwo_cu) |
3954 | { | |
3955 | /* We already have the header, there's no need to read it in again. */ | |
3956 | info_ptr += cu->header.first_die_offset.cu_off; | |
3957 | } | |
3958 | else | |
3959 | { | |
3019eac3 | 3960 | if (this_cu->is_debug_types) |
dee91e82 DE |
3961 | { |
3962 | ULONGEST signature; | |
42e7ad6c | 3963 | cu_offset type_offset_in_tu; |
dee91e82 | 3964 | |
4bdcc0c1 DE |
3965 | info_ptr = read_and_check_type_unit_head (&cu->header, section, |
3966 | abbrev_section, info_ptr, | |
42e7ad6c DE |
3967 | &signature, |
3968 | &type_offset_in_tu); | |
dee91e82 | 3969 | |
42e7ad6c DE |
3970 | /* Since per_cu is the first member of struct signatured_type, |
3971 | we can go from a pointer to one to a pointer to the other. */ | |
3972 | sig_type = (struct signatured_type *) this_cu; | |
3973 | gdb_assert (sig_type->signature == signature); | |
3974 | gdb_assert (sig_type->type_offset_in_tu.cu_off | |
3975 | == type_offset_in_tu.cu_off); | |
dee91e82 DE |
3976 | gdb_assert (this_cu->offset.sect_off == cu->header.offset.sect_off); |
3977 | ||
42e7ad6c DE |
3978 | /* LENGTH has not been set yet for type units if we're |
3979 | using .gdb_index. */ | |
1ce1cefd | 3980 | this_cu->length = get_cu_length (&cu->header); |
3019eac3 DE |
3981 | |
3982 | /* Establish the type offset that can be used to lookup the type. */ | |
3983 | sig_type->type_offset_in_section.sect_off = | |
3984 | this_cu->offset.sect_off + sig_type->type_offset_in_tu.cu_off; | |
dee91e82 DE |
3985 | } |
3986 | else | |
3987 | { | |
4bdcc0c1 DE |
3988 | info_ptr = read_and_check_comp_unit_head (&cu->header, section, |
3989 | abbrev_section, | |
3990 | info_ptr, 0); | |
dee91e82 DE |
3991 | |
3992 | gdb_assert (this_cu->offset.sect_off == cu->header.offset.sect_off); | |
1ce1cefd | 3993 | gdb_assert (this_cu->length == get_cu_length (&cu->header)); |
dee91e82 DE |
3994 | } |
3995 | } | |
10b3939b | 3996 | |
6caca83c | 3997 | /* Skip dummy compilation units. */ |
dee91e82 | 3998 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c CC |
3999 | || peek_abbrev_code (abfd, info_ptr) == 0) |
4000 | { | |
dee91e82 | 4001 | do_cleanups (cleanups); |
21b2bd31 | 4002 | return; |
6caca83c CC |
4003 | } |
4004 | ||
433df2d4 DE |
4005 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
4006 | And if we need to read them now, make sure they're freed when we're | |
42e7ad6c DE |
4007 | done. Note that it's important that if the CU had an abbrev table |
4008 | on entry we don't free it when we're done: Somewhere up the call stack | |
4009 | it may be in use. */ | |
433df2d4 | 4010 | if (cu->abbrev_table == NULL) |
dee91e82 | 4011 | { |
4bdcc0c1 | 4012 | dwarf2_read_abbrevs (cu, abbrev_section); |
dee91e82 DE |
4013 | make_cleanup (dwarf2_free_abbrev_table, cu); |
4014 | } | |
42e7ad6c DE |
4015 | else if (rereading_dwo_cu) |
4016 | { | |
4017 | dwarf2_free_abbrev_table (cu); | |
4018 | dwarf2_read_abbrevs (cu, abbrev_section); | |
4019 | } | |
af703f96 | 4020 | |
dee91e82 | 4021 | /* Read the top level CU/TU die. */ |
3019eac3 | 4022 | init_cu_die_reader (&reader, cu, section, NULL); |
dee91e82 | 4023 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
93311388 | 4024 | |
3019eac3 DE |
4025 | /* If we have a DWO stub, process it and then read in the DWO file. |
4026 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains | |
4027 | a DWO CU, that this test will fail. */ | |
4028 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); | |
4029 | if (attr) | |
4030 | { | |
4031 | char *dwo_name = DW_STRING (attr); | |
42e7ad6c | 4032 | const char *comp_dir_string; |
3019eac3 DE |
4033 | struct dwo_unit *dwo_unit; |
4034 | ULONGEST signature; /* Or dwo_id. */ | |
42e7ad6c | 4035 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; |
3019eac3 | 4036 | int i,num_extra_attrs; |
4bdcc0c1 | 4037 | struct dwarf2_section_info *dwo_abbrev_section; |
3019eac3 DE |
4038 | |
4039 | if (has_children) | |
4040 | error (_("Dwarf Error: compilation unit with DW_AT_GNU_dwo_name" | |
4041 | " has children (offset 0x%x) [in module %s]"), | |
4042 | this_cu->offset.sect_off, bfd_get_filename (abfd)); | |
4043 | ||
4044 | /* These attributes aren't processed until later: | |
4045 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
4046 | However, the attribute is found in the stub which we won't have later. | |
4047 | In order to not impose this complication on the rest of the code, | |
4048 | we read them here and copy them to the DWO CU/TU die. */ | |
3019eac3 DE |
4049 | |
4050 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
4051 | DWO file. */ | |
42e7ad6c | 4052 | stmt_list = NULL; |
3019eac3 DE |
4053 | if (! this_cu->is_debug_types) |
4054 | stmt_list = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); | |
4055 | low_pc = dwarf2_attr (comp_unit_die, DW_AT_low_pc, cu); | |
4056 | high_pc = dwarf2_attr (comp_unit_die, DW_AT_high_pc, cu); | |
4057 | ranges = dwarf2_attr (comp_unit_die, DW_AT_ranges, cu); | |
42e7ad6c | 4058 | comp_dir = dwarf2_attr (comp_unit_die, DW_AT_comp_dir, cu); |
3019eac3 DE |
4059 | |
4060 | /* There should be a DW_AT_addr_base attribute here (if needed). | |
4061 | We need the value before we can process DW_FORM_GNU_addr_index. */ | |
4062 | cu->addr_base = 0; | |
3019eac3 DE |
4063 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_addr_base, cu); |
4064 | if (attr) | |
2e3cf129 DE |
4065 | cu->addr_base = DW_UNSND (attr); |
4066 | ||
4067 | /* There should be a DW_AT_ranges_base attribute here (if needed). | |
4068 | We need the value before we can process DW_AT_ranges. */ | |
4069 | cu->ranges_base = 0; | |
4070 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_ranges_base, cu); | |
4071 | if (attr) | |
4072 | cu->ranges_base = DW_UNSND (attr); | |
3019eac3 DE |
4073 | |
4074 | if (this_cu->is_debug_types) | |
4075 | { | |
4076 | gdb_assert (sig_type != NULL); | |
4077 | signature = sig_type->signature; | |
4078 | } | |
4079 | else | |
4080 | { | |
4081 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
4082 | if (! attr) | |
4083 | error (_("Dwarf Error: missing dwo_id [in module %s]"), | |
4084 | dwo_name); | |
4085 | signature = DW_UNSND (attr); | |
4086 | } | |
4087 | ||
4088 | /* We may need the comp_dir in order to find the DWO file. */ | |
42e7ad6c DE |
4089 | comp_dir_string = NULL; |
4090 | if (comp_dir) | |
4091 | comp_dir_string = DW_STRING (comp_dir); | |
3019eac3 DE |
4092 | |
4093 | if (this_cu->is_debug_types) | |
42e7ad6c | 4094 | dwo_unit = lookup_dwo_type_unit (sig_type, dwo_name, comp_dir_string); |
3019eac3 | 4095 | else |
42e7ad6c | 4096 | dwo_unit = lookup_dwo_comp_unit (this_cu, dwo_name, comp_dir_string, |
3019eac3 DE |
4097 | signature); |
4098 | ||
4099 | if (dwo_unit == NULL) | |
4100 | { | |
4101 | error (_("Dwarf Error: CU at offset 0x%x references unknown DWO" | |
4102 | " with ID %s [in module %s]"), | |
4103 | this_cu->offset.sect_off, | |
4104 | phex (signature, sizeof (signature)), | |
4105 | objfile->name); | |
4106 | } | |
4107 | ||
4108 | /* Set up for reading the DWO CU/TU. */ | |
4109 | cu->dwo_unit = dwo_unit; | |
4110 | section = dwo_unit->info_or_types_section; | |
4111 | begin_info_ptr = info_ptr = section->buffer + dwo_unit->offset.sect_off; | |
4bdcc0c1 | 4112 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; |
3019eac3 DE |
4113 | init_cu_die_reader (&reader, cu, section, dwo_unit->dwo_file); |
4114 | ||
4115 | if (this_cu->is_debug_types) | |
4116 | { | |
4117 | ULONGEST signature; | |
4118 | ||
4bdcc0c1 DE |
4119 | info_ptr = read_and_check_type_unit_head (&cu->header, section, |
4120 | dwo_abbrev_section, | |
4121 | info_ptr, | |
3019eac3 DE |
4122 | &signature, NULL); |
4123 | gdb_assert (sig_type->signature == signature); | |
4124 | gdb_assert (dwo_unit->offset.sect_off == cu->header.offset.sect_off); | |
1ce1cefd | 4125 | gdb_assert (dwo_unit->length == get_cu_length (&cu->header)); |
3019eac3 DE |
4126 | |
4127 | /* Establish the type offset that can be used to lookup the type. | |
4128 | For DWO files, we don't know it until now. */ | |
4129 | sig_type->type_offset_in_section.sect_off = | |
4130 | dwo_unit->offset.sect_off + dwo_unit->type_offset_in_tu.cu_off; | |
4131 | } | |
4132 | else | |
4133 | { | |
4bdcc0c1 DE |
4134 | info_ptr = read_and_check_comp_unit_head (&cu->header, section, |
4135 | dwo_abbrev_section, | |
4136 | info_ptr, 0); | |
3019eac3 | 4137 | gdb_assert (dwo_unit->offset.sect_off == cu->header.offset.sect_off); |
1ce1cefd | 4138 | gdb_assert (dwo_unit->length == get_cu_length (&cu->header)); |
3019eac3 DE |
4139 | } |
4140 | ||
4141 | /* Discard the original CU's abbrev table, and read the DWO's. */ | |
4142 | dwarf2_free_abbrev_table (cu); | |
4bdcc0c1 | 4143 | dwarf2_read_abbrevs (cu, dwo_abbrev_section); |
3019eac3 DE |
4144 | |
4145 | /* Read in the die, but leave space to copy over the attributes | |
4146 | from the stub. This has the benefit of simplifying the rest of | |
4147 | the code - all the real work is done here. */ | |
4148 | num_extra_attrs = ((stmt_list != NULL) | |
4149 | + (low_pc != NULL) | |
4150 | + (high_pc != NULL) | |
42e7ad6c DE |
4151 | + (ranges != NULL) |
4152 | + (comp_dir != NULL)); | |
3019eac3 DE |
4153 | info_ptr = read_full_die_1 (&reader, &comp_unit_die, info_ptr, |
4154 | &has_children, num_extra_attrs); | |
4155 | ||
4156 | /* Copy over the attributes from the stub to the DWO die. */ | |
4157 | i = comp_unit_die->num_attrs; | |
4158 | if (stmt_list != NULL) | |
4159 | comp_unit_die->attrs[i++] = *stmt_list; | |
4160 | if (low_pc != NULL) | |
4161 | comp_unit_die->attrs[i++] = *low_pc; | |
4162 | if (high_pc != NULL) | |
4163 | comp_unit_die->attrs[i++] = *high_pc; | |
4164 | if (ranges != NULL) | |
4165 | comp_unit_die->attrs[i++] = *ranges; | |
42e7ad6c DE |
4166 | if (comp_dir != NULL) |
4167 | comp_unit_die->attrs[i++] = *comp_dir; | |
3019eac3 DE |
4168 | comp_unit_die->num_attrs += num_extra_attrs; |
4169 | ||
4170 | /* Skip dummy compilation units. */ | |
4171 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
4172 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
4173 | { | |
4174 | do_cleanups (cleanups); | |
4175 | return; | |
4176 | } | |
4177 | } | |
4178 | ||
dee91e82 DE |
4179 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); |
4180 | ||
4181 | if (free_cu_cleanup != NULL) | |
348e048f | 4182 | { |
dee91e82 DE |
4183 | if (keep) |
4184 | { | |
4185 | /* We've successfully allocated this compilation unit. Let our | |
4186 | caller clean it up when finished with it. */ | |
4187 | discard_cleanups (free_cu_cleanup); | |
4188 | ||
4189 | /* We can only discard free_cu_cleanup and all subsequent cleanups. | |
4190 | So we have to manually free the abbrev table. */ | |
4191 | dwarf2_free_abbrev_table (cu); | |
4192 | ||
4193 | /* Link this CU into read_in_chain. */ | |
4194 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
4195 | dwarf2_per_objfile->read_in_chain = this_cu; | |
4196 | } | |
4197 | else | |
4198 | do_cleanups (free_cu_cleanup); | |
348e048f | 4199 | } |
dee91e82 DE |
4200 | |
4201 | do_cleanups (cleanups); | |
4202 | } | |
4203 | ||
3019eac3 DE |
4204 | /* Read CU/TU THIS_CU in section SECTION, |
4205 | but do not follow DW_AT_GNU_dwo_name if present. | |
4206 | DWO_FILE, if non-NULL, is the DWO file to read (the caller is assumed to | |
4207 | have already done the lookup to find the DWO file). | |
dee91e82 DE |
4208 | |
4209 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 4210 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
4211 | |
4212 | We fill in THIS_CU->length. | |
4213 | ||
4214 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
4215 | linker) then DIE_READER_FUNC will not get called. | |
4216 | ||
4217 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
4218 | This is done in order to not leave THIS_CU->cu in a state where we have |
4219 | to care whether it refers to the "main" CU or the DWO CU. */ | |
dee91e82 DE |
4220 | |
4221 | static void | |
4222 | init_cutu_and_read_dies_no_follow (struct dwarf2_per_cu_data *this_cu, | |
4223 | struct dwarf2_section_info *abbrev_section, | |
3019eac3 | 4224 | struct dwo_file *dwo_file, |
dee91e82 DE |
4225 | die_reader_func_ftype *die_reader_func, |
4226 | void *data) | |
4227 | { | |
4228 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
3019eac3 DE |
4229 | struct dwarf2_section_info *section = this_cu->info_or_types_section; |
4230 | bfd *abfd = section->asection->owner; | |
dee91e82 DE |
4231 | struct dwarf2_cu cu; |
4232 | gdb_byte *begin_info_ptr, *info_ptr; | |
4233 | struct die_reader_specs reader; | |
4234 | struct cleanup *cleanups; | |
4235 | struct die_info *comp_unit_die; | |
4236 | int has_children; | |
4237 | ||
09406207 DE |
4238 | if (dwarf2_die_debug) |
4239 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset 0x%x\n", | |
4240 | this_cu->is_debug_types ? "type" : "comp", | |
4241 | this_cu->offset.sect_off); | |
4242 | ||
dee91e82 DE |
4243 | gdb_assert (this_cu->cu == NULL); |
4244 | ||
dee91e82 DE |
4245 | /* This is cheap if the section is already read in. */ |
4246 | dwarf2_read_section (objfile, section); | |
4247 | ||
4248 | init_one_comp_unit (&cu, this_cu); | |
4249 | ||
4250 | cleanups = make_cleanup (free_stack_comp_unit, &cu); | |
4251 | ||
4252 | begin_info_ptr = info_ptr = section->buffer + this_cu->offset.sect_off; | |
4bdcc0c1 DE |
4253 | info_ptr = read_and_check_comp_unit_head (&cu.header, section, |
4254 | abbrev_section, info_ptr, | |
3019eac3 | 4255 | this_cu->is_debug_types); |
dee91e82 | 4256 | |
1ce1cefd | 4257 | this_cu->length = get_cu_length (&cu.header); |
dee91e82 DE |
4258 | |
4259 | /* Skip dummy compilation units. */ | |
4260 | if (info_ptr >= begin_info_ptr + this_cu->length | |
4261 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
c906108c | 4262 | { |
dee91e82 | 4263 | do_cleanups (cleanups); |
21b2bd31 | 4264 | return; |
93311388 | 4265 | } |
72bf9492 | 4266 | |
dee91e82 DE |
4267 | dwarf2_read_abbrevs (&cu, abbrev_section); |
4268 | make_cleanup (dwarf2_free_abbrev_table, &cu); | |
4269 | ||
3019eac3 | 4270 | init_cu_die_reader (&reader, &cu, section, dwo_file); |
dee91e82 DE |
4271 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
4272 | ||
4273 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
4274 | ||
4275 | do_cleanups (cleanups); | |
4276 | } | |
4277 | ||
3019eac3 DE |
4278 | /* Read a CU/TU, except that this does not look for DW_AT_GNU_dwo_name and |
4279 | does not lookup the specified DWO file. | |
4280 | This cannot be used to read DWO files. | |
dee91e82 DE |
4281 | |
4282 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
4283 | This is done in order to not leave THIS_CU->cu in a state where we have |
4284 | to care whether it refers to the "main" CU or the DWO CU. | |
4285 | We can revisit this if the data shows there's a performance issue. */ | |
dee91e82 DE |
4286 | |
4287 | static void | |
4288 | init_cutu_and_read_dies_simple (struct dwarf2_per_cu_data *this_cu, | |
4289 | die_reader_func_ftype *die_reader_func, | |
4290 | void *data) | |
4291 | { | |
4292 | init_cutu_and_read_dies_no_follow (this_cu, | |
4293 | &dwarf2_per_objfile->abbrev, | |
3019eac3 | 4294 | NULL, |
dee91e82 DE |
4295 | die_reader_func, data); |
4296 | } | |
4297 | ||
4298 | /* die_reader_func for process_psymtab_comp_unit. */ | |
4299 | ||
4300 | static void | |
4301 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
4302 | gdb_byte *info_ptr, | |
4303 | struct die_info *comp_unit_die, | |
4304 | int has_children, | |
4305 | void *data) | |
4306 | { | |
4307 | struct dwarf2_cu *cu = reader->cu; | |
4308 | struct objfile *objfile = cu->objfile; | |
4309 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
dee91e82 DE |
4310 | struct attribute *attr; |
4311 | CORE_ADDR baseaddr; | |
4312 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
4313 | struct partial_symtab *pst; | |
4314 | int has_pc_info; | |
4315 | const char *filename; | |
95554aad | 4316 | int *want_partial_unit_ptr = data; |
dee91e82 | 4317 | |
95554aad TT |
4318 | if (comp_unit_die->tag == DW_TAG_partial_unit |
4319 | && (want_partial_unit_ptr == NULL | |
4320 | || !*want_partial_unit_ptr)) | |
dee91e82 DE |
4321 | return; |
4322 | ||
95554aad | 4323 | prepare_one_comp_unit (cu, comp_unit_die, language_minimal); |
dee91e82 DE |
4324 | |
4325 | cu->list_in_scope = &file_symbols; | |
c906108c | 4326 | |
93311388 | 4327 | /* Allocate a new partial symbol table structure. */ |
dee91e82 | 4328 | attr = dwarf2_attr (comp_unit_die, DW_AT_name, cu); |
3e2a0cee TT |
4329 | if (attr == NULL || !DW_STRING (attr)) |
4330 | filename = ""; | |
4331 | else | |
4332 | filename = DW_STRING (attr); | |
93311388 | 4333 | pst = start_psymtab_common (objfile, objfile->section_offsets, |
3e2a0cee | 4334 | filename, |
93311388 DE |
4335 | /* TEXTLOW and TEXTHIGH are set below. */ |
4336 | 0, | |
4337 | objfile->global_psymbols.next, | |
4338 | objfile->static_psymbols.next); | |
9750bca9 | 4339 | pst->psymtabs_addrmap_supported = 1; |
72bf9492 | 4340 | |
dee91e82 | 4341 | attr = dwarf2_attr (comp_unit_die, DW_AT_comp_dir, cu); |
d85a05f0 DJ |
4342 | if (attr != NULL) |
4343 | pst->dirname = DW_STRING (attr); | |
72bf9492 | 4344 | |
dee91e82 | 4345 | pst->read_symtab_private = per_cu; |
72bf9492 | 4346 | |
93311388 | 4347 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
e7c27a73 | 4348 | |
0963b4bd | 4349 | /* Store the function that reads in the rest of the symbol table. */ |
93311388 | 4350 | pst->read_symtab = dwarf2_psymtab_to_symtab; |
57349743 | 4351 | |
dee91e82 | 4352 | per_cu->v.psymtab = pst; |
c906108c | 4353 | |
dee91e82 | 4354 | dwarf2_find_base_address (comp_unit_die, cu); |
d85a05f0 | 4355 | |
93311388 DE |
4356 | /* Possibly set the default values of LOWPC and HIGHPC from |
4357 | `DW_AT_ranges'. */ | |
d85a05f0 | 4358 | has_pc_info = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
dee91e82 | 4359 | &best_highpc, cu, pst); |
d85a05f0 | 4360 | if (has_pc_info == 1 && best_lowpc < best_highpc) |
93311388 DE |
4361 | /* Store the contiguous range if it is not empty; it can be empty for |
4362 | CUs with no code. */ | |
4363 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
d85a05f0 DJ |
4364 | best_lowpc + baseaddr, |
4365 | best_highpc + baseaddr - 1, pst); | |
93311388 DE |
4366 | |
4367 | /* Check if comp unit has_children. | |
4368 | If so, read the rest of the partial symbols from this comp unit. | |
0963b4bd | 4369 | If not, there's no more debug_info for this comp unit. */ |
d85a05f0 | 4370 | if (has_children) |
93311388 DE |
4371 | { |
4372 | struct partial_die_info *first_die; | |
4373 | CORE_ADDR lowpc, highpc; | |
31ffec48 | 4374 | |
93311388 DE |
4375 | lowpc = ((CORE_ADDR) -1); |
4376 | highpc = ((CORE_ADDR) 0); | |
c906108c | 4377 | |
dee91e82 | 4378 | first_die = load_partial_dies (reader, info_ptr, 1); |
c906108c | 4379 | |
93311388 | 4380 | scan_partial_symbols (first_die, &lowpc, &highpc, |
dee91e82 | 4381 | ! has_pc_info, cu); |
57c22c6c | 4382 | |
93311388 DE |
4383 | /* If we didn't find a lowpc, set it to highpc to avoid |
4384 | complaints from `maint check'. */ | |
4385 | if (lowpc == ((CORE_ADDR) -1)) | |
4386 | lowpc = highpc; | |
10b3939b | 4387 | |
93311388 DE |
4388 | /* If the compilation unit didn't have an explicit address range, |
4389 | then use the information extracted from its child dies. */ | |
d85a05f0 | 4390 | if (! has_pc_info) |
93311388 | 4391 | { |
d85a05f0 DJ |
4392 | best_lowpc = lowpc; |
4393 | best_highpc = highpc; | |
93311388 DE |
4394 | } |
4395 | } | |
d85a05f0 DJ |
4396 | pst->textlow = best_lowpc + baseaddr; |
4397 | pst->texthigh = best_highpc + baseaddr; | |
c906108c | 4398 | |
93311388 DE |
4399 | pst->n_global_syms = objfile->global_psymbols.next - |
4400 | (objfile->global_psymbols.list + pst->globals_offset); | |
4401 | pst->n_static_syms = objfile->static_psymbols.next - | |
4402 | (objfile->static_psymbols.list + pst->statics_offset); | |
4403 | sort_pst_symbols (pst); | |
c906108c | 4404 | |
95554aad TT |
4405 | if (!VEC_empty (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs)) |
4406 | { | |
4407 | int i; | |
4408 | int len = VEC_length (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
4409 | struct dwarf2_per_cu_data *iter; | |
4410 | ||
4411 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
4412 | post-pass. */ | |
4413 | pst->number_of_dependencies = len; | |
4414 | pst->dependencies = obstack_alloc (&objfile->objfile_obstack, | |
4415 | len * sizeof (struct symtab *)); | |
4416 | for (i = 0; | |
4417 | VEC_iterate (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, | |
4418 | i, iter); | |
4419 | ++i) | |
4420 | pst->dependencies[i] = iter->v.psymtab; | |
4421 | ||
4422 | VEC_free (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
4423 | } | |
4424 | ||
3019eac3 | 4425 | if (per_cu->is_debug_types) |
348e048f DE |
4426 | { |
4427 | /* It's not clear we want to do anything with stmt lists here. | |
4428 | Waiting to see what gcc ultimately does. */ | |
4429 | } | |
d85a05f0 | 4430 | else |
93311388 DE |
4431 | { |
4432 | /* Get the list of files included in the current compilation unit, | |
4433 | and build a psymtab for each of them. */ | |
dee91e82 | 4434 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); |
93311388 | 4435 | } |
09406207 DE |
4436 | |
4437 | if (dwarf2_read_debug) | |
4438 | { | |
4439 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
4440 | ||
4441 | fprintf_unfiltered (gdb_stdlog, | |
4442 | "Psymtab for %s unit @0x%x: 0x%s - 0x%s" | |
4443 | ", %d global, %d static syms\n", | |
4444 | per_cu->is_debug_types ? "type" : "comp", | |
4445 | per_cu->offset.sect_off, | |
4446 | paddress (gdbarch, pst->textlow), | |
4447 | paddress (gdbarch, pst->texthigh), | |
4448 | pst->n_global_syms, pst->n_static_syms); | |
4449 | } | |
dee91e82 | 4450 | } |
ae038cb0 | 4451 | |
dee91e82 DE |
4452 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. |
4453 | Process compilation unit THIS_CU for a psymtab. */ | |
4454 | ||
4455 | static void | |
95554aad TT |
4456 | process_psymtab_comp_unit (struct dwarf2_per_cu_data *this_cu, |
4457 | int want_partial_unit) | |
dee91e82 DE |
4458 | { |
4459 | /* If this compilation unit was already read in, free the | |
4460 | cached copy in order to read it in again. This is | |
4461 | necessary because we skipped some symbols when we first | |
4462 | read in the compilation unit (see load_partial_dies). | |
4463 | This problem could be avoided, but the benefit is unclear. */ | |
4464 | if (this_cu->cu != NULL) | |
4465 | free_one_cached_comp_unit (this_cu); | |
4466 | ||
3019eac3 | 4467 | gdb_assert (! this_cu->is_debug_types); |
fd820528 | 4468 | init_cutu_and_read_dies (this_cu, 0, 0, process_psymtab_comp_unit_reader, |
95554aad | 4469 | &want_partial_unit); |
dee91e82 DE |
4470 | |
4471 | /* Age out any secondary CUs. */ | |
4472 | age_cached_comp_units (); | |
93311388 | 4473 | } |
ff013f42 | 4474 | |
348e048f DE |
4475 | /* Traversal function for htab_traverse_noresize. |
4476 | Process one .debug_types comp-unit. */ | |
4477 | ||
4478 | static int | |
dee91e82 | 4479 | process_psymtab_type_unit (void **slot, void *info) |
348e048f | 4480 | { |
dee91e82 DE |
4481 | struct signatured_type *sig_type = (struct signatured_type *) *slot; |
4482 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 4483 | |
fd820528 | 4484 | gdb_assert (per_cu->is_debug_types); |
a0f42c21 | 4485 | gdb_assert (info == NULL); |
348e048f | 4486 | |
dee91e82 DE |
4487 | /* If this compilation unit was already read in, free the |
4488 | cached copy in order to read it in again. This is | |
4489 | necessary because we skipped some symbols when we first | |
4490 | read in the compilation unit (see load_partial_dies). | |
4491 | This problem could be avoided, but the benefit is unclear. */ | |
4492 | if (per_cu->cu != NULL) | |
4493 | free_one_cached_comp_unit (per_cu); | |
4494 | ||
fd820528 DE |
4495 | init_cutu_and_read_dies (per_cu, 0, 0, process_psymtab_comp_unit_reader, |
4496 | NULL); | |
dee91e82 DE |
4497 | |
4498 | /* Age out any secondary CUs. */ | |
4499 | age_cached_comp_units (); | |
348e048f DE |
4500 | |
4501 | return 1; | |
4502 | } | |
4503 | ||
4504 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
4505 | Build partial symbol tables for the .debug_types comp-units. */ | |
4506 | ||
4507 | static void | |
4508 | build_type_psymtabs (struct objfile *objfile) | |
4509 | { | |
0e50663e | 4510 | if (! create_all_type_units (objfile)) |
348e048f DE |
4511 | return; |
4512 | ||
4513 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types, | |
dee91e82 | 4514 | process_psymtab_type_unit, NULL); |
348e048f DE |
4515 | } |
4516 | ||
60606b2c TT |
4517 | /* A cleanup function that clears objfile's psymtabs_addrmap field. */ |
4518 | ||
4519 | static void | |
4520 | psymtabs_addrmap_cleanup (void *o) | |
4521 | { | |
4522 | struct objfile *objfile = o; | |
ec61707d | 4523 | |
60606b2c TT |
4524 | objfile->psymtabs_addrmap = NULL; |
4525 | } | |
4526 | ||
95554aad TT |
4527 | /* Compute the 'user' field for each psymtab in OBJFILE. */ |
4528 | ||
4529 | static void | |
4530 | set_partial_user (struct objfile *objfile) | |
4531 | { | |
4532 | int i; | |
4533 | ||
4534 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
4535 | { | |
4536 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); | |
4537 | struct partial_symtab *pst = per_cu->v.psymtab; | |
4538 | int j; | |
4539 | ||
4540 | for (j = 0; j < pst->number_of_dependencies; ++j) | |
4541 | { | |
4542 | /* Set the 'user' field only if it is not already set. */ | |
4543 | if (pst->dependencies[j]->user == NULL) | |
4544 | pst->dependencies[j]->user = pst; | |
4545 | } | |
4546 | } | |
4547 | } | |
4548 | ||
93311388 DE |
4549 | /* Build the partial symbol table by doing a quick pass through the |
4550 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 4551 | |
93311388 | 4552 | static void |
c67a9c90 | 4553 | dwarf2_build_psymtabs_hard (struct objfile *objfile) |
93311388 | 4554 | { |
60606b2c TT |
4555 | struct cleanup *back_to, *addrmap_cleanup; |
4556 | struct obstack temp_obstack; | |
21b2bd31 | 4557 | int i; |
93311388 | 4558 | |
45cfd468 DE |
4559 | if (dwarf2_read_debug) |
4560 | { | |
4561 | fprintf_unfiltered (gdb_stdlog, "Building psymtabs of objfile %s ...\n", | |
4562 | objfile->name); | |
4563 | } | |
4564 | ||
98bfdba5 PA |
4565 | dwarf2_per_objfile->reading_partial_symbols = 1; |
4566 | ||
be391dca | 4567 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
91c24f0a | 4568 | |
93311388 DE |
4569 | /* Any cached compilation units will be linked by the per-objfile |
4570 | read_in_chain. Make sure to free them when we're done. */ | |
4571 | back_to = make_cleanup (free_cached_comp_units, NULL); | |
72bf9492 | 4572 | |
348e048f DE |
4573 | build_type_psymtabs (objfile); |
4574 | ||
93311388 | 4575 | create_all_comp_units (objfile); |
c906108c | 4576 | |
60606b2c TT |
4577 | /* Create a temporary address map on a temporary obstack. We later |
4578 | copy this to the final obstack. */ | |
4579 | obstack_init (&temp_obstack); | |
4580 | make_cleanup_obstack_free (&temp_obstack); | |
4581 | objfile->psymtabs_addrmap = addrmap_create_mutable (&temp_obstack); | |
4582 | addrmap_cleanup = make_cleanup (psymtabs_addrmap_cleanup, objfile); | |
72bf9492 | 4583 | |
21b2bd31 | 4584 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
93311388 | 4585 | { |
21b2bd31 | 4586 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
aaa75496 | 4587 | |
95554aad | 4588 | process_psymtab_comp_unit (per_cu, 0); |
c906108c | 4589 | } |
ff013f42 | 4590 | |
95554aad TT |
4591 | set_partial_user (objfile); |
4592 | ||
ff013f42 JK |
4593 | objfile->psymtabs_addrmap = addrmap_create_fixed (objfile->psymtabs_addrmap, |
4594 | &objfile->objfile_obstack); | |
60606b2c | 4595 | discard_cleanups (addrmap_cleanup); |
ff013f42 | 4596 | |
ae038cb0 | 4597 | do_cleanups (back_to); |
45cfd468 DE |
4598 | |
4599 | if (dwarf2_read_debug) | |
4600 | fprintf_unfiltered (gdb_stdlog, "Done building psymtabs of %s\n", | |
4601 | objfile->name); | |
ae038cb0 DJ |
4602 | } |
4603 | ||
3019eac3 | 4604 | /* die_reader_func for load_partial_comp_unit. */ |
ae038cb0 DJ |
4605 | |
4606 | static void | |
dee91e82 DE |
4607 | load_partial_comp_unit_reader (const struct die_reader_specs *reader, |
4608 | gdb_byte *info_ptr, | |
4609 | struct die_info *comp_unit_die, | |
4610 | int has_children, | |
4611 | void *data) | |
ae038cb0 | 4612 | { |
dee91e82 | 4613 | struct dwarf2_cu *cu = reader->cu; |
ae038cb0 | 4614 | |
95554aad | 4615 | prepare_one_comp_unit (cu, comp_unit_die, language_minimal); |
ae038cb0 | 4616 | |
ae038cb0 DJ |
4617 | /* Check if comp unit has_children. |
4618 | If so, read the rest of the partial symbols from this comp unit. | |
0963b4bd | 4619 | If not, there's no more debug_info for this comp unit. */ |
d85a05f0 | 4620 | if (has_children) |
dee91e82 DE |
4621 | load_partial_dies (reader, info_ptr, 0); |
4622 | } | |
98bfdba5 | 4623 | |
dee91e82 DE |
4624 | /* Load the partial DIEs for a secondary CU into memory. |
4625 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 4626 | |
dee91e82 DE |
4627 | static void |
4628 | load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu) | |
4629 | { | |
fd820528 | 4630 | init_cutu_and_read_dies (this_cu, 1, 1, load_partial_comp_unit_reader, NULL); |
ae038cb0 DJ |
4631 | } |
4632 | ||
9cdd5dbd DE |
4633 | /* Create a list of all compilation units in OBJFILE. |
4634 | This is only done for -readnow and building partial symtabs. */ | |
ae038cb0 DJ |
4635 | |
4636 | static void | |
4637 | create_all_comp_units (struct objfile *objfile) | |
4638 | { | |
4639 | int n_allocated; | |
4640 | int n_comp_units; | |
4641 | struct dwarf2_per_cu_data **all_comp_units; | |
be391dca TT |
4642 | gdb_byte *info_ptr; |
4643 | ||
4644 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); | |
4645 | info_ptr = dwarf2_per_objfile->info.buffer; | |
ae038cb0 DJ |
4646 | |
4647 | n_comp_units = 0; | |
4648 | n_allocated = 10; | |
4649 | all_comp_units = xmalloc (n_allocated | |
4650 | * sizeof (struct dwarf2_per_cu_data *)); | |
6e70227d | 4651 | |
3e43a32a MS |
4652 | while (info_ptr < dwarf2_per_objfile->info.buffer |
4653 | + dwarf2_per_objfile->info.size) | |
ae038cb0 | 4654 | { |
c764a876 | 4655 | unsigned int length, initial_length_size; |
ae038cb0 | 4656 | struct dwarf2_per_cu_data *this_cu; |
b64f50a1 | 4657 | sect_offset offset; |
ae038cb0 | 4658 | |
b64f50a1 | 4659 | offset.sect_off = info_ptr - dwarf2_per_objfile->info.buffer; |
ae038cb0 DJ |
4660 | |
4661 | /* Read just enough information to find out where the next | |
4662 | compilation unit is. */ | |
c764a876 DE |
4663 | length = read_initial_length (objfile->obfd, info_ptr, |
4664 | &initial_length_size); | |
ae038cb0 DJ |
4665 | |
4666 | /* Save the compilation unit for later lookup. */ | |
4667 | this_cu = obstack_alloc (&objfile->objfile_obstack, | |
4668 | sizeof (struct dwarf2_per_cu_data)); | |
4669 | memset (this_cu, 0, sizeof (*this_cu)); | |
4670 | this_cu->offset = offset; | |
c764a876 | 4671 | this_cu->length = length + initial_length_size; |
9291a0cd | 4672 | this_cu->objfile = objfile; |
3019eac3 | 4673 | this_cu->info_or_types_section = &dwarf2_per_objfile->info; |
ae038cb0 DJ |
4674 | |
4675 | if (n_comp_units == n_allocated) | |
4676 | { | |
4677 | n_allocated *= 2; | |
4678 | all_comp_units = xrealloc (all_comp_units, | |
4679 | n_allocated | |
4680 | * sizeof (struct dwarf2_per_cu_data *)); | |
4681 | } | |
4682 | all_comp_units[n_comp_units++] = this_cu; | |
4683 | ||
4684 | info_ptr = info_ptr + this_cu->length; | |
4685 | } | |
4686 | ||
4687 | dwarf2_per_objfile->all_comp_units | |
4688 | = obstack_alloc (&objfile->objfile_obstack, | |
4689 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
4690 | memcpy (dwarf2_per_objfile->all_comp_units, all_comp_units, | |
4691 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
4692 | xfree (all_comp_units); | |
4693 | dwarf2_per_objfile->n_comp_units = n_comp_units; | |
c906108c SS |
4694 | } |
4695 | ||
5734ee8b DJ |
4696 | /* Process all loaded DIEs for compilation unit CU, starting at |
4697 | FIRST_DIE. The caller should pass NEED_PC == 1 if the compilation | |
4698 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or | |
4699 | DW_AT_ranges). If NEED_PC is set, then this function will set | |
4700 | *LOWPC and *HIGHPC to the lowest and highest PC values found in CU | |
4701 | and record the covered ranges in the addrmap. */ | |
c906108c | 4702 | |
72bf9492 DJ |
4703 | static void |
4704 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
5734ee8b | 4705 | CORE_ADDR *highpc, int need_pc, struct dwarf2_cu *cu) |
c906108c | 4706 | { |
72bf9492 | 4707 | struct partial_die_info *pdi; |
c906108c | 4708 | |
91c24f0a DC |
4709 | /* Now, march along the PDI's, descending into ones which have |
4710 | interesting children but skipping the children of the other ones, | |
4711 | until we reach the end of the compilation unit. */ | |
c906108c | 4712 | |
72bf9492 | 4713 | pdi = first_die; |
91c24f0a | 4714 | |
72bf9492 DJ |
4715 | while (pdi != NULL) |
4716 | { | |
4717 | fixup_partial_die (pdi, cu); | |
c906108c | 4718 | |
f55ee35c | 4719 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
4720 | children, so we need to look at them. Ditto for anonymous |
4721 | enums. */ | |
933c6fe4 | 4722 | |
72bf9492 | 4723 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
95554aad TT |
4724 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
4725 | || pdi->tag == DW_TAG_imported_unit) | |
c906108c | 4726 | { |
72bf9492 | 4727 | switch (pdi->tag) |
c906108c SS |
4728 | { |
4729 | case DW_TAG_subprogram: | |
5734ee8b | 4730 | add_partial_subprogram (pdi, lowpc, highpc, need_pc, cu); |
c906108c | 4731 | break; |
72929c62 | 4732 | case DW_TAG_constant: |
c906108c SS |
4733 | case DW_TAG_variable: |
4734 | case DW_TAG_typedef: | |
91c24f0a | 4735 | case DW_TAG_union_type: |
72bf9492 | 4736 | if (!pdi->is_declaration) |
63d06c5c | 4737 | { |
72bf9492 | 4738 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
4739 | } |
4740 | break; | |
c906108c | 4741 | case DW_TAG_class_type: |
680b30c7 | 4742 | case DW_TAG_interface_type: |
c906108c | 4743 | case DW_TAG_structure_type: |
72bf9492 | 4744 | if (!pdi->is_declaration) |
c906108c | 4745 | { |
72bf9492 | 4746 | add_partial_symbol (pdi, cu); |
c906108c SS |
4747 | } |
4748 | break; | |
91c24f0a | 4749 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
4750 | if (!pdi->is_declaration) |
4751 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
4752 | break; |
4753 | case DW_TAG_base_type: | |
a02abb62 | 4754 | case DW_TAG_subrange_type: |
c906108c | 4755 | /* File scope base type definitions are added to the partial |
c5aa993b | 4756 | symbol table. */ |
72bf9492 | 4757 | add_partial_symbol (pdi, cu); |
c906108c | 4758 | break; |
d9fa45fe | 4759 | case DW_TAG_namespace: |
5734ee8b | 4760 | add_partial_namespace (pdi, lowpc, highpc, need_pc, cu); |
91c24f0a | 4761 | break; |
5d7cb8df JK |
4762 | case DW_TAG_module: |
4763 | add_partial_module (pdi, lowpc, highpc, need_pc, cu); | |
4764 | break; | |
95554aad TT |
4765 | case DW_TAG_imported_unit: |
4766 | { | |
4767 | struct dwarf2_per_cu_data *per_cu; | |
4768 | ||
4769 | per_cu = dwarf2_find_containing_comp_unit (pdi->d.offset, | |
4770 | cu->objfile); | |
4771 | ||
4772 | /* Go read the partial unit, if needed. */ | |
4773 | if (per_cu->v.psymtab == NULL) | |
4774 | process_psymtab_comp_unit (per_cu, 1); | |
4775 | ||
4776 | VEC_safe_push (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, | |
4777 | per_cu); | |
4778 | } | |
4779 | break; | |
c906108c SS |
4780 | default: |
4781 | break; | |
4782 | } | |
4783 | } | |
4784 | ||
72bf9492 DJ |
4785 | /* If the die has a sibling, skip to the sibling. */ |
4786 | ||
4787 | pdi = pdi->die_sibling; | |
4788 | } | |
4789 | } | |
4790 | ||
4791 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 4792 | |
72bf9492 | 4793 | Normally, this is simple. For C++, the parent DIE's fully scoped |
987504bb JJ |
4794 | name is concatenated with "::" and the partial DIE's name. For |
4795 | Java, the same thing occurs except that "." is used instead of "::". | |
72bf9492 DJ |
4796 | Enumerators are an exception; they use the scope of their parent |
4797 | enumeration type, i.e. the name of the enumeration type is not | |
4798 | prepended to the enumerator. | |
91c24f0a | 4799 | |
72bf9492 DJ |
4800 | There are two complexities. One is DW_AT_specification; in this |
4801 | case "parent" means the parent of the target of the specification, | |
4802 | instead of the direct parent of the DIE. The other is compilers | |
4803 | which do not emit DW_TAG_namespace; in this case we try to guess | |
4804 | the fully qualified name of structure types from their members' | |
4805 | linkage names. This must be done using the DIE's children rather | |
4806 | than the children of any DW_AT_specification target. We only need | |
4807 | to do this for structures at the top level, i.e. if the target of | |
4808 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
4809 | have a parent. */ | |
4810 | ||
4811 | /* Compute the scope prefix associated with PDI's parent, in | |
4812 | compilation unit CU. The result will be allocated on CU's | |
4813 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
4814 | field. NULL is returned if no prefix is necessary. */ | |
4815 | static char * | |
4816 | partial_die_parent_scope (struct partial_die_info *pdi, | |
4817 | struct dwarf2_cu *cu) | |
4818 | { | |
4819 | char *grandparent_scope; | |
4820 | struct partial_die_info *parent, *real_pdi; | |
91c24f0a | 4821 | |
72bf9492 DJ |
4822 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
4823 | then this means the parent of the specification DIE. */ | |
4824 | ||
4825 | real_pdi = pdi; | |
72bf9492 | 4826 | while (real_pdi->has_specification) |
10b3939b | 4827 | real_pdi = find_partial_die (real_pdi->spec_offset, cu); |
72bf9492 DJ |
4828 | |
4829 | parent = real_pdi->die_parent; | |
4830 | if (parent == NULL) | |
4831 | return NULL; | |
4832 | ||
4833 | if (parent->scope_set) | |
4834 | return parent->scope; | |
4835 | ||
4836 | fixup_partial_die (parent, cu); | |
4837 | ||
10b3939b | 4838 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 4839 | |
acebe513 UW |
4840 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
4841 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
4842 | Work around this problem here. */ | |
4843 | if (cu->language == language_cplus | |
6e70227d | 4844 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
4845 | && strcmp (parent->name, "::") == 0 |
4846 | && grandparent_scope == NULL) | |
4847 | { | |
4848 | parent->scope = NULL; | |
4849 | parent->scope_set = 1; | |
4850 | return NULL; | |
4851 | } | |
4852 | ||
9c6c53f7 SA |
4853 | if (pdi->tag == DW_TAG_enumerator) |
4854 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
4855 | parent->scope = grandparent_scope; | |
4856 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 4857 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
4858 | || parent->tag == DW_TAG_structure_type |
4859 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 4860 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a TT |
4861 | || parent->tag == DW_TAG_union_type |
4862 | || parent->tag == DW_TAG_enumeration_type) | |
72bf9492 DJ |
4863 | { |
4864 | if (grandparent_scope == NULL) | |
4865 | parent->scope = parent->name; | |
4866 | else | |
3e43a32a MS |
4867 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
4868 | grandparent_scope, | |
f55ee35c | 4869 | parent->name, 0, cu); |
72bf9492 | 4870 | } |
72bf9492 DJ |
4871 | else |
4872 | { | |
4873 | /* FIXME drow/2004-04-01: What should we be doing with | |
4874 | function-local names? For partial symbols, we should probably be | |
4875 | ignoring them. */ | |
4876 | complaint (&symfile_complaints, | |
e2e0b3e5 | 4877 | _("unhandled containing DIE tag %d for DIE at %d"), |
b64f50a1 | 4878 | parent->tag, pdi->offset.sect_off); |
72bf9492 | 4879 | parent->scope = grandparent_scope; |
c906108c SS |
4880 | } |
4881 | ||
72bf9492 DJ |
4882 | parent->scope_set = 1; |
4883 | return parent->scope; | |
4884 | } | |
4885 | ||
4886 | /* Return the fully scoped name associated with PDI, from compilation unit | |
4887 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 4888 | |
72bf9492 DJ |
4889 | static char * |
4890 | partial_die_full_name (struct partial_die_info *pdi, | |
4891 | struct dwarf2_cu *cu) | |
4892 | { | |
4893 | char *parent_scope; | |
4894 | ||
98bfdba5 PA |
4895 | /* If this is a template instantiation, we can not work out the |
4896 | template arguments from partial DIEs. So, unfortunately, we have | |
4897 | to go through the full DIEs. At least any work we do building | |
4898 | types here will be reused if full symbols are loaded later. */ | |
4899 | if (pdi->has_template_arguments) | |
4900 | { | |
4901 | fixup_partial_die (pdi, cu); | |
4902 | ||
4903 | if (pdi->name != NULL && strchr (pdi->name, '<') == NULL) | |
4904 | { | |
4905 | struct die_info *die; | |
4906 | struct attribute attr; | |
4907 | struct dwarf2_cu *ref_cu = cu; | |
4908 | ||
b64f50a1 | 4909 | /* DW_FORM_ref_addr is using section offset. */ |
98bfdba5 PA |
4910 | attr.name = 0; |
4911 | attr.form = DW_FORM_ref_addr; | |
4568ecf9 | 4912 | attr.u.unsnd = pdi->offset.sect_off; |
98bfdba5 PA |
4913 | die = follow_die_ref (NULL, &attr, &ref_cu); |
4914 | ||
4915 | return xstrdup (dwarf2_full_name (NULL, die, ref_cu)); | |
4916 | } | |
4917 | } | |
4918 | ||
72bf9492 DJ |
4919 | parent_scope = partial_die_parent_scope (pdi, cu); |
4920 | if (parent_scope == NULL) | |
4921 | return NULL; | |
4922 | else | |
f55ee35c | 4923 | return typename_concat (NULL, parent_scope, pdi->name, 0, cu); |
c906108c SS |
4924 | } |
4925 | ||
4926 | static void | |
72bf9492 | 4927 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 4928 | { |
e7c27a73 | 4929 | struct objfile *objfile = cu->objfile; |
c906108c | 4930 | CORE_ADDR addr = 0; |
decbce07 | 4931 | char *actual_name = NULL; |
e142c38c | 4932 | CORE_ADDR baseaddr; |
72bf9492 | 4933 | int built_actual_name = 0; |
e142c38c DJ |
4934 | |
4935 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 4936 | |
94af9270 KS |
4937 | actual_name = partial_die_full_name (pdi, cu); |
4938 | if (actual_name) | |
4939 | built_actual_name = 1; | |
63d06c5c | 4940 | |
72bf9492 DJ |
4941 | if (actual_name == NULL) |
4942 | actual_name = pdi->name; | |
4943 | ||
c906108c SS |
4944 | switch (pdi->tag) |
4945 | { | |
4946 | case DW_TAG_subprogram: | |
2cfa0c8d | 4947 | if (pdi->is_external || cu->language == language_ada) |
c906108c | 4948 | { |
2cfa0c8d JB |
4949 | /* brobecker/2007-12-26: Normally, only "external" DIEs are part |
4950 | of the global scope. But in Ada, we want to be able to access | |
4951 | nested procedures globally. So all Ada subprograms are stored | |
4952 | in the global scope. */ | |
f47fb265 | 4953 | /* prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 4954 | mst_text, objfile); */ |
f47fb265 MS |
4955 | add_psymbol_to_list (actual_name, strlen (actual_name), |
4956 | built_actual_name, | |
4957 | VAR_DOMAIN, LOC_BLOCK, | |
4958 | &objfile->global_psymbols, | |
4959 | 0, pdi->lowpc + baseaddr, | |
4960 | cu->language, objfile); | |
c906108c SS |
4961 | } |
4962 | else | |
4963 | { | |
f47fb265 | 4964 | /* prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 4965 | mst_file_text, objfile); */ |
f47fb265 MS |
4966 | add_psymbol_to_list (actual_name, strlen (actual_name), |
4967 | built_actual_name, | |
4968 | VAR_DOMAIN, LOC_BLOCK, | |
4969 | &objfile->static_psymbols, | |
4970 | 0, pdi->lowpc + baseaddr, | |
4971 | cu->language, objfile); | |
c906108c SS |
4972 | } |
4973 | break; | |
72929c62 JB |
4974 | case DW_TAG_constant: |
4975 | { | |
4976 | struct psymbol_allocation_list *list; | |
4977 | ||
4978 | if (pdi->is_external) | |
4979 | list = &objfile->global_psymbols; | |
4980 | else | |
4981 | list = &objfile->static_psymbols; | |
f47fb265 MS |
4982 | add_psymbol_to_list (actual_name, strlen (actual_name), |
4983 | built_actual_name, VAR_DOMAIN, LOC_STATIC, | |
4984 | list, 0, 0, cu->language, objfile); | |
72929c62 JB |
4985 | } |
4986 | break; | |
c906108c | 4987 | case DW_TAG_variable: |
95554aad TT |
4988 | if (pdi->d.locdesc) |
4989 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 4990 | |
95554aad | 4991 | if (pdi->d.locdesc |
caac4577 JG |
4992 | && addr == 0 |
4993 | && !dwarf2_per_objfile->has_section_at_zero) | |
4994 | { | |
4995 | /* A global or static variable may also have been stripped | |
4996 | out by the linker if unused, in which case its address | |
4997 | will be nullified; do not add such variables into partial | |
4998 | symbol table then. */ | |
4999 | } | |
5000 | else if (pdi->is_external) | |
c906108c SS |
5001 | { |
5002 | /* Global Variable. | |
5003 | Don't enter into the minimal symbol tables as there is | |
5004 | a minimal symbol table entry from the ELF symbols already. | |
5005 | Enter into partial symbol table if it has a location | |
5006 | descriptor or a type. | |
5007 | If the location descriptor is missing, new_symbol will create | |
5008 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
5009 | be determined from the minimal symbol table whenever the variable | |
5010 | is referenced. | |
5011 | The address for the partial symbol table entry is not | |
5012 | used by GDB, but it comes in handy for debugging partial symbol | |
5013 | table building. */ | |
5014 | ||
95554aad | 5015 | if (pdi->d.locdesc || pdi->has_type) |
f47fb265 MS |
5016 | add_psymbol_to_list (actual_name, strlen (actual_name), |
5017 | built_actual_name, | |
5018 | VAR_DOMAIN, LOC_STATIC, | |
5019 | &objfile->global_psymbols, | |
5020 | 0, addr + baseaddr, | |
5021 | cu->language, objfile); | |
c906108c SS |
5022 | } |
5023 | else | |
5024 | { | |
0963b4bd | 5025 | /* Static Variable. Skip symbols without location descriptors. */ |
95554aad | 5026 | if (pdi->d.locdesc == NULL) |
decbce07 MS |
5027 | { |
5028 | if (built_actual_name) | |
5029 | xfree (actual_name); | |
5030 | return; | |
5031 | } | |
f47fb265 | 5032 | /* prim_record_minimal_symbol (actual_name, addr + baseaddr, |
c5aa993b | 5033 | mst_file_data, objfile); */ |
f47fb265 MS |
5034 | add_psymbol_to_list (actual_name, strlen (actual_name), |
5035 | built_actual_name, | |
5036 | VAR_DOMAIN, LOC_STATIC, | |
5037 | &objfile->static_psymbols, | |
5038 | 0, addr + baseaddr, | |
5039 | cu->language, objfile); | |
c906108c SS |
5040 | } |
5041 | break; | |
5042 | case DW_TAG_typedef: | |
5043 | case DW_TAG_base_type: | |
a02abb62 | 5044 | case DW_TAG_subrange_type: |
38d518c9 | 5045 | add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 5046 | built_actual_name, |
176620f1 | 5047 | VAR_DOMAIN, LOC_TYPEDEF, |
c906108c | 5048 | &objfile->static_psymbols, |
e142c38c | 5049 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 5050 | break; |
72bf9492 DJ |
5051 | case DW_TAG_namespace: |
5052 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
04a679b8 | 5053 | built_actual_name, |
72bf9492 DJ |
5054 | VAR_DOMAIN, LOC_TYPEDEF, |
5055 | &objfile->global_psymbols, | |
5056 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
5057 | break; | |
c906108c | 5058 | case DW_TAG_class_type: |
680b30c7 | 5059 | case DW_TAG_interface_type: |
c906108c SS |
5060 | case DW_TAG_structure_type: |
5061 | case DW_TAG_union_type: | |
5062 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
5063 | /* Skip external references. The DWARF standard says in the section |
5064 | about "Structure, Union, and Class Type Entries": "An incomplete | |
5065 | structure, union or class type is represented by a structure, | |
5066 | union or class entry that does not have a byte size attribute | |
5067 | and that has a DW_AT_declaration attribute." */ | |
5068 | if (!pdi->has_byte_size && pdi->is_declaration) | |
decbce07 MS |
5069 | { |
5070 | if (built_actual_name) | |
5071 | xfree (actual_name); | |
5072 | return; | |
5073 | } | |
fa4028e9 | 5074 | |
63d06c5c DC |
5075 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
5076 | static vs. global. */ | |
38d518c9 | 5077 | add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 5078 | built_actual_name, |
176620f1 | 5079 | STRUCT_DOMAIN, LOC_TYPEDEF, |
987504bb JJ |
5080 | (cu->language == language_cplus |
5081 | || cu->language == language_java) | |
63d06c5c DC |
5082 | ? &objfile->global_psymbols |
5083 | : &objfile->static_psymbols, | |
e142c38c | 5084 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 5085 | |
c906108c SS |
5086 | break; |
5087 | case DW_TAG_enumerator: | |
38d518c9 | 5088 | add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 5089 | built_actual_name, |
176620f1 | 5090 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
5091 | (cu->language == language_cplus |
5092 | || cu->language == language_java) | |
f6fe98ef DJ |
5093 | ? &objfile->global_psymbols |
5094 | : &objfile->static_psymbols, | |
e142c38c | 5095 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
5096 | break; |
5097 | default: | |
5098 | break; | |
5099 | } | |
5c4e30ca | 5100 | |
72bf9492 DJ |
5101 | if (built_actual_name) |
5102 | xfree (actual_name); | |
c906108c SS |
5103 | } |
5104 | ||
5c4e30ca DC |
5105 | /* Read a partial die corresponding to a namespace; also, add a symbol |
5106 | corresponding to that namespace to the symbol table. NAMESPACE is | |
5107 | the name of the enclosing namespace. */ | |
91c24f0a | 5108 | |
72bf9492 DJ |
5109 | static void |
5110 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 5111 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
5734ee8b | 5112 | int need_pc, struct dwarf2_cu *cu) |
91c24f0a | 5113 | { |
72bf9492 | 5114 | /* Add a symbol for the namespace. */ |
e7c27a73 | 5115 | |
72bf9492 | 5116 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
5117 | |
5118 | /* Now scan partial symbols in that namespace. */ | |
5119 | ||
91c24f0a | 5120 | if (pdi->has_children) |
5734ee8b | 5121 | scan_partial_symbols (pdi->die_child, lowpc, highpc, need_pc, cu); |
91c24f0a DC |
5122 | } |
5123 | ||
5d7cb8df JK |
5124 | /* Read a partial die corresponding to a Fortran module. */ |
5125 | ||
5126 | static void | |
5127 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
5128 | CORE_ADDR *highpc, int need_pc, struct dwarf2_cu *cu) | |
5129 | { | |
f55ee35c | 5130 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
5131 | |
5132 | if (pdi->has_children) | |
5133 | scan_partial_symbols (pdi->die_child, lowpc, highpc, need_pc, cu); | |
5134 | } | |
5135 | ||
bc30ff58 JB |
5136 | /* Read a partial die corresponding to a subprogram and create a partial |
5137 | symbol for that subprogram. When the CU language allows it, this | |
5138 | routine also defines a partial symbol for each nested subprogram | |
5139 | that this subprogram contains. | |
6e70227d | 5140 | |
bc30ff58 JB |
5141 | DIE my also be a lexical block, in which case we simply search |
5142 | recursively for suprograms defined inside that lexical block. | |
5143 | Again, this is only performed when the CU language allows this | |
5144 | type of definitions. */ | |
5145 | ||
5146 | static void | |
5147 | add_partial_subprogram (struct partial_die_info *pdi, | |
5148 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 5149 | int need_pc, struct dwarf2_cu *cu) |
bc30ff58 JB |
5150 | { |
5151 | if (pdi->tag == DW_TAG_subprogram) | |
5152 | { | |
5153 | if (pdi->has_pc_info) | |
5154 | { | |
5155 | if (pdi->lowpc < *lowpc) | |
5156 | *lowpc = pdi->lowpc; | |
5157 | if (pdi->highpc > *highpc) | |
5158 | *highpc = pdi->highpc; | |
5734ee8b DJ |
5159 | if (need_pc) |
5160 | { | |
5161 | CORE_ADDR baseaddr; | |
5162 | struct objfile *objfile = cu->objfile; | |
5163 | ||
5164 | baseaddr = ANOFFSET (objfile->section_offsets, | |
5165 | SECT_OFF_TEXT (objfile)); | |
5166 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
01637564 DE |
5167 | pdi->lowpc + baseaddr, |
5168 | pdi->highpc - 1 + baseaddr, | |
9291a0cd | 5169 | cu->per_cu->v.psymtab); |
5734ee8b | 5170 | } |
481860b3 GB |
5171 | } |
5172 | ||
5173 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
5174 | { | |
bc30ff58 | 5175 | if (!pdi->is_declaration) |
e8d05480 JB |
5176 | /* Ignore subprogram DIEs that do not have a name, they are |
5177 | illegal. Do not emit a complaint at this point, we will | |
5178 | do so when we convert this psymtab into a symtab. */ | |
5179 | if (pdi->name) | |
5180 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
5181 | } |
5182 | } | |
6e70227d | 5183 | |
bc30ff58 JB |
5184 | if (! pdi->has_children) |
5185 | return; | |
5186 | ||
5187 | if (cu->language == language_ada) | |
5188 | { | |
5189 | pdi = pdi->die_child; | |
5190 | while (pdi != NULL) | |
5191 | { | |
5192 | fixup_partial_die (pdi, cu); | |
5193 | if (pdi->tag == DW_TAG_subprogram | |
5194 | || pdi->tag == DW_TAG_lexical_block) | |
5734ee8b | 5195 | add_partial_subprogram (pdi, lowpc, highpc, need_pc, cu); |
bc30ff58 JB |
5196 | pdi = pdi->die_sibling; |
5197 | } | |
5198 | } | |
5199 | } | |
5200 | ||
91c24f0a DC |
5201 | /* Read a partial die corresponding to an enumeration type. */ |
5202 | ||
72bf9492 DJ |
5203 | static void |
5204 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
5205 | struct dwarf2_cu *cu) | |
91c24f0a | 5206 | { |
72bf9492 | 5207 | struct partial_die_info *pdi; |
91c24f0a DC |
5208 | |
5209 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
5210 | add_partial_symbol (enum_pdi, cu); |
5211 | ||
5212 | pdi = enum_pdi->die_child; | |
5213 | while (pdi) | |
91c24f0a | 5214 | { |
72bf9492 | 5215 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
e2e0b3e5 | 5216 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
91c24f0a | 5217 | else |
72bf9492 DJ |
5218 | add_partial_symbol (pdi, cu); |
5219 | pdi = pdi->die_sibling; | |
91c24f0a | 5220 | } |
91c24f0a DC |
5221 | } |
5222 | ||
6caca83c CC |
5223 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
5224 | ||
5225 | static unsigned int | |
5226 | peek_abbrev_code (bfd *abfd, gdb_byte *info_ptr) | |
5227 | { | |
5228 | unsigned int bytes_read; | |
5229 | ||
5230 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
5231 | } | |
5232 | ||
4bb7a0a7 DJ |
5233 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit CU. |
5234 | Return the corresponding abbrev, or NULL if the number is zero (indicating | |
5235 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
5236 | the initial number. */ | |
5237 | ||
5238 | static struct abbrev_info * | |
fe1b8b76 | 5239 | peek_die_abbrev (gdb_byte *info_ptr, unsigned int *bytes_read, |
891d2f0b | 5240 | struct dwarf2_cu *cu) |
4bb7a0a7 DJ |
5241 | { |
5242 | bfd *abfd = cu->objfile->obfd; | |
5243 | unsigned int abbrev_number; | |
5244 | struct abbrev_info *abbrev; | |
5245 | ||
5246 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
5247 | ||
5248 | if (abbrev_number == 0) | |
5249 | return NULL; | |
5250 | ||
433df2d4 | 5251 | abbrev = abbrev_table_lookup_abbrev (cu->abbrev_table, abbrev_number); |
4bb7a0a7 DJ |
5252 | if (!abbrev) |
5253 | { | |
3e43a32a MS |
5254 | error (_("Dwarf Error: Could not find abbrev number %d [in module %s]"), |
5255 | abbrev_number, bfd_get_filename (abfd)); | |
4bb7a0a7 DJ |
5256 | } |
5257 | ||
5258 | return abbrev; | |
5259 | } | |
5260 | ||
93311388 DE |
5261 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
5262 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
5263 | DIE. Any children of the skipped DIEs will also be skipped. */ |
5264 | ||
fe1b8b76 | 5265 | static gdb_byte * |
dee91e82 | 5266 | skip_children (const struct die_reader_specs *reader, gdb_byte *info_ptr) |
4bb7a0a7 | 5267 | { |
dee91e82 | 5268 | struct dwarf2_cu *cu = reader->cu; |
4bb7a0a7 DJ |
5269 | struct abbrev_info *abbrev; |
5270 | unsigned int bytes_read; | |
5271 | ||
5272 | while (1) | |
5273 | { | |
5274 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
5275 | if (abbrev == NULL) | |
5276 | return info_ptr + bytes_read; | |
5277 | else | |
dee91e82 | 5278 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
5279 | } |
5280 | } | |
5281 | ||
93311388 DE |
5282 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
5283 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
5284 | abbrev corresponding to that skipped uleb128 should be passed in |
5285 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
5286 | children. */ | |
5287 | ||
fe1b8b76 | 5288 | static gdb_byte * |
dee91e82 DE |
5289 | skip_one_die (const struct die_reader_specs *reader, gdb_byte *info_ptr, |
5290 | struct abbrev_info *abbrev) | |
4bb7a0a7 DJ |
5291 | { |
5292 | unsigned int bytes_read; | |
5293 | struct attribute attr; | |
dee91e82 DE |
5294 | bfd *abfd = reader->abfd; |
5295 | struct dwarf2_cu *cu = reader->cu; | |
5296 | gdb_byte *buffer = reader->buffer; | |
f664829e DE |
5297 | const gdb_byte *buffer_end = reader->buffer_end; |
5298 | gdb_byte *start_info_ptr = info_ptr; | |
4bb7a0a7 DJ |
5299 | unsigned int form, i; |
5300 | ||
5301 | for (i = 0; i < abbrev->num_attrs; i++) | |
5302 | { | |
5303 | /* The only abbrev we care about is DW_AT_sibling. */ | |
5304 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
5305 | { | |
dee91e82 | 5306 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
4bb7a0a7 | 5307 | if (attr.form == DW_FORM_ref_addr) |
3e43a32a MS |
5308 | complaint (&symfile_complaints, |
5309 | _("ignoring absolute DW_AT_sibling")); | |
4bb7a0a7 | 5310 | else |
b64f50a1 | 5311 | return buffer + dwarf2_get_ref_die_offset (&attr).sect_off; |
4bb7a0a7 DJ |
5312 | } |
5313 | ||
5314 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
5315 | form = abbrev->attrs[i].form; | |
5316 | skip_attribute: | |
5317 | switch (form) | |
5318 | { | |
4bb7a0a7 | 5319 | case DW_FORM_ref_addr: |
ae411497 TT |
5320 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
5321 | and later it is offset sized. */ | |
5322 | if (cu->header.version == 2) | |
5323 | info_ptr += cu->header.addr_size; | |
5324 | else | |
5325 | info_ptr += cu->header.offset_size; | |
5326 | break; | |
5327 | case DW_FORM_addr: | |
4bb7a0a7 DJ |
5328 | info_ptr += cu->header.addr_size; |
5329 | break; | |
5330 | case DW_FORM_data1: | |
5331 | case DW_FORM_ref1: | |
5332 | case DW_FORM_flag: | |
5333 | info_ptr += 1; | |
5334 | break; | |
2dc7f7b3 TT |
5335 | case DW_FORM_flag_present: |
5336 | break; | |
4bb7a0a7 DJ |
5337 | case DW_FORM_data2: |
5338 | case DW_FORM_ref2: | |
5339 | info_ptr += 2; | |
5340 | break; | |
5341 | case DW_FORM_data4: | |
5342 | case DW_FORM_ref4: | |
5343 | info_ptr += 4; | |
5344 | break; | |
5345 | case DW_FORM_data8: | |
5346 | case DW_FORM_ref8: | |
55f1336d | 5347 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
5348 | info_ptr += 8; |
5349 | break; | |
5350 | case DW_FORM_string: | |
9b1c24c8 | 5351 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
5352 | info_ptr += bytes_read; |
5353 | break; | |
2dc7f7b3 | 5354 | case DW_FORM_sec_offset: |
4bb7a0a7 DJ |
5355 | case DW_FORM_strp: |
5356 | info_ptr += cu->header.offset_size; | |
5357 | break; | |
2dc7f7b3 | 5358 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
5359 | case DW_FORM_block: |
5360 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
5361 | info_ptr += bytes_read; | |
5362 | break; | |
5363 | case DW_FORM_block1: | |
5364 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
5365 | break; | |
5366 | case DW_FORM_block2: | |
5367 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
5368 | break; | |
5369 | case DW_FORM_block4: | |
5370 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
5371 | break; | |
5372 | case DW_FORM_sdata: | |
5373 | case DW_FORM_udata: | |
5374 | case DW_FORM_ref_udata: | |
3019eac3 DE |
5375 | case DW_FORM_GNU_addr_index: |
5376 | case DW_FORM_GNU_str_index: | |
f664829e | 5377 | info_ptr = (gdb_byte *) safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
5378 | break; |
5379 | case DW_FORM_indirect: | |
5380 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
5381 | info_ptr += bytes_read; | |
5382 | /* We need to continue parsing from here, so just go back to | |
5383 | the top. */ | |
5384 | goto skip_attribute; | |
5385 | ||
5386 | default: | |
3e43a32a MS |
5387 | error (_("Dwarf Error: Cannot handle %s " |
5388 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
5389 | dwarf_form_name (form), |
5390 | bfd_get_filename (abfd)); | |
5391 | } | |
5392 | } | |
5393 | ||
5394 | if (abbrev->has_children) | |
dee91e82 | 5395 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
5396 | else |
5397 | return info_ptr; | |
5398 | } | |
5399 | ||
93311388 | 5400 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 5401 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 5402 | |
fe1b8b76 | 5403 | static gdb_byte * |
dee91e82 DE |
5404 | locate_pdi_sibling (const struct die_reader_specs *reader, |
5405 | struct partial_die_info *orig_pdi, | |
5406 | gdb_byte *info_ptr) | |
91c24f0a DC |
5407 | { |
5408 | /* Do we know the sibling already? */ | |
72bf9492 | 5409 | |
91c24f0a DC |
5410 | if (orig_pdi->sibling) |
5411 | return orig_pdi->sibling; | |
5412 | ||
5413 | /* Are there any children to deal with? */ | |
5414 | ||
5415 | if (!orig_pdi->has_children) | |
5416 | return info_ptr; | |
5417 | ||
4bb7a0a7 | 5418 | /* Skip the children the long way. */ |
91c24f0a | 5419 | |
dee91e82 | 5420 | return skip_children (reader, info_ptr); |
91c24f0a DC |
5421 | } |
5422 | ||
c906108c SS |
5423 | /* Expand this partial symbol table into a full symbol table. */ |
5424 | ||
5425 | static void | |
fba45db2 | 5426 | dwarf2_psymtab_to_symtab (struct partial_symtab *pst) |
c906108c | 5427 | { |
c906108c SS |
5428 | if (pst != NULL) |
5429 | { | |
5430 | if (pst->readin) | |
5431 | { | |
3e43a32a MS |
5432 | warning (_("bug: psymtab for %s is already read in."), |
5433 | pst->filename); | |
c906108c SS |
5434 | } |
5435 | else | |
5436 | { | |
5437 | if (info_verbose) | |
5438 | { | |
3e43a32a MS |
5439 | printf_filtered (_("Reading in symbols for %s..."), |
5440 | pst->filename); | |
c906108c SS |
5441 | gdb_flush (gdb_stdout); |
5442 | } | |
5443 | ||
10b3939b DJ |
5444 | /* Restore our global data. */ |
5445 | dwarf2_per_objfile = objfile_data (pst->objfile, | |
5446 | dwarf2_objfile_data_key); | |
5447 | ||
b2ab525c KB |
5448 | /* If this psymtab is constructed from a debug-only objfile, the |
5449 | has_section_at_zero flag will not necessarily be correct. We | |
5450 | can get the correct value for this flag by looking at the data | |
5451 | associated with the (presumably stripped) associated objfile. */ | |
5452 | if (pst->objfile->separate_debug_objfile_backlink) | |
5453 | { | |
5454 | struct dwarf2_per_objfile *dpo_backlink | |
5455 | = objfile_data (pst->objfile->separate_debug_objfile_backlink, | |
5456 | dwarf2_objfile_data_key); | |
9a619af0 | 5457 | |
b2ab525c KB |
5458 | dwarf2_per_objfile->has_section_at_zero |
5459 | = dpo_backlink->has_section_at_zero; | |
5460 | } | |
5461 | ||
98bfdba5 PA |
5462 | dwarf2_per_objfile->reading_partial_symbols = 0; |
5463 | ||
c906108c SS |
5464 | psymtab_to_symtab_1 (pst); |
5465 | ||
5466 | /* Finish up the debug error message. */ | |
5467 | if (info_verbose) | |
a3f17187 | 5468 | printf_filtered (_("done.\n")); |
c906108c SS |
5469 | } |
5470 | } | |
95554aad TT |
5471 | |
5472 | process_cu_includes (); | |
c906108c | 5473 | } |
9cdd5dbd DE |
5474 | \f |
5475 | /* Reading in full CUs. */ | |
c906108c | 5476 | |
10b3939b DJ |
5477 | /* Add PER_CU to the queue. */ |
5478 | ||
5479 | static void | |
95554aad TT |
5480 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
5481 | enum language pretend_language) | |
10b3939b DJ |
5482 | { |
5483 | struct dwarf2_queue_item *item; | |
5484 | ||
5485 | per_cu->queued = 1; | |
5486 | item = xmalloc (sizeof (*item)); | |
5487 | item->per_cu = per_cu; | |
95554aad | 5488 | item->pretend_language = pretend_language; |
10b3939b DJ |
5489 | item->next = NULL; |
5490 | ||
5491 | if (dwarf2_queue == NULL) | |
5492 | dwarf2_queue = item; | |
5493 | else | |
5494 | dwarf2_queue_tail->next = item; | |
5495 | ||
5496 | dwarf2_queue_tail = item; | |
5497 | } | |
5498 | ||
0907af0c DE |
5499 | /* THIS_CU has a reference to PER_CU. If necessary, load the new compilation |
5500 | unit and add it to our queue. | |
5501 | The result is non-zero if PER_CU was queued, otherwise the result is zero | |
5502 | meaning either PER_CU is already queued or it is already loaded. */ | |
5503 | ||
5504 | static int | |
5505 | maybe_queue_comp_unit (struct dwarf2_cu *this_cu, | |
5506 | struct dwarf2_per_cu_data *per_cu, | |
5507 | enum language pretend_language) | |
5508 | { | |
5509 | /* We may arrive here during partial symbol reading, if we need full | |
5510 | DIEs to process an unusual case (e.g. template arguments). Do | |
5511 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
5512 | if (dwarf2_per_objfile->reading_partial_symbols) | |
5513 | { | |
5514 | if (per_cu->cu == NULL || per_cu->cu->dies == NULL) | |
5515 | return 1; | |
5516 | return 0; | |
5517 | } | |
5518 | ||
5519 | /* Mark the dependence relation so that we don't flush PER_CU | |
5520 | too early. */ | |
5521 | dwarf2_add_dependence (this_cu, per_cu); | |
5522 | ||
5523 | /* If it's already on the queue, we have nothing to do. */ | |
5524 | if (per_cu->queued) | |
5525 | return 0; | |
5526 | ||
5527 | /* If the compilation unit is already loaded, just mark it as | |
5528 | used. */ | |
5529 | if (per_cu->cu != NULL) | |
5530 | { | |
5531 | per_cu->cu->last_used = 0; | |
5532 | return 0; | |
5533 | } | |
5534 | ||
5535 | /* Add it to the queue. */ | |
5536 | queue_comp_unit (per_cu, pretend_language); | |
5537 | ||
5538 | return 1; | |
5539 | } | |
5540 | ||
10b3939b DJ |
5541 | /* Process the queue. */ |
5542 | ||
5543 | static void | |
a0f42c21 | 5544 | process_queue (void) |
10b3939b DJ |
5545 | { |
5546 | struct dwarf2_queue_item *item, *next_item; | |
5547 | ||
45cfd468 DE |
5548 | if (dwarf2_read_debug) |
5549 | { | |
5550 | fprintf_unfiltered (gdb_stdlog, | |
5551 | "Expanding one or more symtabs of objfile %s ...\n", | |
5552 | dwarf2_per_objfile->objfile->name); | |
5553 | } | |
5554 | ||
03dd20cc DJ |
5555 | /* The queue starts out with one item, but following a DIE reference |
5556 | may load a new CU, adding it to the end of the queue. */ | |
10b3939b DJ |
5557 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) |
5558 | { | |
9291a0cd TT |
5559 | if (dwarf2_per_objfile->using_index |
5560 | ? !item->per_cu->v.quick->symtab | |
5561 | : (item->per_cu->v.psymtab && !item->per_cu->v.psymtab->readin)) | |
95554aad | 5562 | process_full_comp_unit (item->per_cu, item->pretend_language); |
10b3939b DJ |
5563 | |
5564 | item->per_cu->queued = 0; | |
5565 | next_item = item->next; | |
5566 | xfree (item); | |
5567 | } | |
5568 | ||
5569 | dwarf2_queue_tail = NULL; | |
45cfd468 DE |
5570 | |
5571 | if (dwarf2_read_debug) | |
5572 | { | |
5573 | fprintf_unfiltered (gdb_stdlog, "Done expanding symtabs of %s.\n", | |
5574 | dwarf2_per_objfile->objfile->name); | |
5575 | } | |
10b3939b DJ |
5576 | } |
5577 | ||
5578 | /* Free all allocated queue entries. This function only releases anything if | |
5579 | an error was thrown; if the queue was processed then it would have been | |
5580 | freed as we went along. */ | |
5581 | ||
5582 | static void | |
5583 | dwarf2_release_queue (void *dummy) | |
5584 | { | |
5585 | struct dwarf2_queue_item *item, *last; | |
5586 | ||
5587 | item = dwarf2_queue; | |
5588 | while (item) | |
5589 | { | |
5590 | /* Anything still marked queued is likely to be in an | |
5591 | inconsistent state, so discard it. */ | |
5592 | if (item->per_cu->queued) | |
5593 | { | |
5594 | if (item->per_cu->cu != NULL) | |
dee91e82 | 5595 | free_one_cached_comp_unit (item->per_cu); |
10b3939b DJ |
5596 | item->per_cu->queued = 0; |
5597 | } | |
5598 | ||
5599 | last = item; | |
5600 | item = item->next; | |
5601 | xfree (last); | |
5602 | } | |
5603 | ||
5604 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
5605 | } | |
5606 | ||
5607 | /* Read in full symbols for PST, and anything it depends on. */ | |
5608 | ||
c906108c | 5609 | static void |
fba45db2 | 5610 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c | 5611 | { |
10b3939b | 5612 | struct dwarf2_per_cu_data *per_cu; |
aaa75496 JB |
5613 | int i; |
5614 | ||
95554aad TT |
5615 | if (pst->readin) |
5616 | return; | |
5617 | ||
aaa75496 | 5618 | for (i = 0; i < pst->number_of_dependencies; i++) |
95554aad TT |
5619 | if (!pst->dependencies[i]->readin |
5620 | && pst->dependencies[i]->user == NULL) | |
aaa75496 JB |
5621 | { |
5622 | /* Inform about additional files that need to be read in. */ | |
5623 | if (info_verbose) | |
5624 | { | |
a3f17187 | 5625 | /* FIXME: i18n: Need to make this a single string. */ |
aaa75496 JB |
5626 | fputs_filtered (" ", gdb_stdout); |
5627 | wrap_here (""); | |
5628 | fputs_filtered ("and ", gdb_stdout); | |
5629 | wrap_here (""); | |
5630 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
0963b4bd | 5631 | wrap_here (""); /* Flush output. */ |
aaa75496 JB |
5632 | gdb_flush (gdb_stdout); |
5633 | } | |
5634 | psymtab_to_symtab_1 (pst->dependencies[i]); | |
5635 | } | |
5636 | ||
e38df1d0 | 5637 | per_cu = pst->read_symtab_private; |
10b3939b DJ |
5638 | |
5639 | if (per_cu == NULL) | |
aaa75496 JB |
5640 | { |
5641 | /* It's an include file, no symbols to read for it. | |
5642 | Everything is in the parent symtab. */ | |
5643 | pst->readin = 1; | |
5644 | return; | |
5645 | } | |
c906108c | 5646 | |
a0f42c21 | 5647 | dw2_do_instantiate_symtab (per_cu); |
10b3939b DJ |
5648 | } |
5649 | ||
dee91e82 DE |
5650 | /* Trivial hash function for die_info: the hash value of a DIE |
5651 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 5652 | |
dee91e82 DE |
5653 | static hashval_t |
5654 | die_hash (const void *item) | |
10b3939b | 5655 | { |
dee91e82 | 5656 | const struct die_info *die = item; |
6502dd73 | 5657 | |
dee91e82 DE |
5658 | return die->offset.sect_off; |
5659 | } | |
63d06c5c | 5660 | |
dee91e82 DE |
5661 | /* Trivial comparison function for die_info structures: two DIEs |
5662 | are equal if they have the same offset. */ | |
98bfdba5 | 5663 | |
dee91e82 DE |
5664 | static int |
5665 | die_eq (const void *item_lhs, const void *item_rhs) | |
5666 | { | |
5667 | const struct die_info *die_lhs = item_lhs; | |
5668 | const struct die_info *die_rhs = item_rhs; | |
c906108c | 5669 | |
dee91e82 DE |
5670 | return die_lhs->offset.sect_off == die_rhs->offset.sect_off; |
5671 | } | |
c906108c | 5672 | |
dee91e82 DE |
5673 | /* die_reader_func for load_full_comp_unit. |
5674 | This is identical to read_signatured_type_reader, | |
5675 | but is kept separate for now. */ | |
c906108c | 5676 | |
dee91e82 DE |
5677 | static void |
5678 | load_full_comp_unit_reader (const struct die_reader_specs *reader, | |
5679 | gdb_byte *info_ptr, | |
5680 | struct die_info *comp_unit_die, | |
5681 | int has_children, | |
5682 | void *data) | |
5683 | { | |
5684 | struct dwarf2_cu *cu = reader->cu; | |
95554aad | 5685 | enum language *language_ptr = data; |
6caca83c | 5686 | |
dee91e82 DE |
5687 | gdb_assert (cu->die_hash == NULL); |
5688 | cu->die_hash = | |
5689 | htab_create_alloc_ex (cu->header.length / 12, | |
5690 | die_hash, | |
5691 | die_eq, | |
5692 | NULL, | |
5693 | &cu->comp_unit_obstack, | |
5694 | hashtab_obstack_allocate, | |
5695 | dummy_obstack_deallocate); | |
e142c38c | 5696 | |
dee91e82 DE |
5697 | if (has_children) |
5698 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
5699 | &info_ptr, comp_unit_die); | |
5700 | cu->dies = comp_unit_die; | |
5701 | /* comp_unit_die is not stored in die_hash, no need. */ | |
10b3939b DJ |
5702 | |
5703 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 5704 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 5705 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
5706 | or we won't be able to build types correctly. |
5707 | Similarly, if we do not read the producer, we can not apply | |
5708 | producer-specific interpretation. */ | |
95554aad | 5709 | prepare_one_comp_unit (cu, cu->dies, *language_ptr); |
dee91e82 | 5710 | } |
10b3939b | 5711 | |
dee91e82 | 5712 | /* Load the DIEs associated with PER_CU into memory. */ |
a6c727b2 | 5713 | |
dee91e82 | 5714 | static void |
95554aad TT |
5715 | load_full_comp_unit (struct dwarf2_per_cu_data *this_cu, |
5716 | enum language pretend_language) | |
dee91e82 | 5717 | { |
3019eac3 | 5718 | gdb_assert (! this_cu->is_debug_types); |
c5b7e1cb | 5719 | |
95554aad TT |
5720 | init_cutu_and_read_dies (this_cu, 1, 1, load_full_comp_unit_reader, |
5721 | &pretend_language); | |
10b3939b DJ |
5722 | } |
5723 | ||
3da10d80 KS |
5724 | /* Add a DIE to the delayed physname list. */ |
5725 | ||
5726 | static void | |
5727 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
5728 | const char *name, struct die_info *die, | |
5729 | struct dwarf2_cu *cu) | |
5730 | { | |
5731 | struct delayed_method_info mi; | |
5732 | mi.type = type; | |
5733 | mi.fnfield_index = fnfield_index; | |
5734 | mi.index = index; | |
5735 | mi.name = name; | |
5736 | mi.die = die; | |
5737 | VEC_safe_push (delayed_method_info, cu->method_list, &mi); | |
5738 | } | |
5739 | ||
5740 | /* A cleanup for freeing the delayed method list. */ | |
5741 | ||
5742 | static void | |
5743 | free_delayed_list (void *ptr) | |
5744 | { | |
5745 | struct dwarf2_cu *cu = (struct dwarf2_cu *) ptr; | |
5746 | if (cu->method_list != NULL) | |
5747 | { | |
5748 | VEC_free (delayed_method_info, cu->method_list); | |
5749 | cu->method_list = NULL; | |
5750 | } | |
5751 | } | |
5752 | ||
5753 | /* Compute the physnames of any methods on the CU's method list. | |
5754 | ||
5755 | The computation of method physnames is delayed in order to avoid the | |
5756 | (bad) condition that one of the method's formal parameters is of an as yet | |
5757 | incomplete type. */ | |
5758 | ||
5759 | static void | |
5760 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
5761 | { | |
5762 | int i; | |
5763 | struct delayed_method_info *mi; | |
5764 | for (i = 0; VEC_iterate (delayed_method_info, cu->method_list, i, mi) ; ++i) | |
5765 | { | |
1d06ead6 | 5766 | const char *physname; |
3da10d80 KS |
5767 | struct fn_fieldlist *fn_flp |
5768 | = &TYPE_FN_FIELDLIST (mi->type, mi->fnfield_index); | |
1d06ead6 | 5769 | physname = dwarf2_physname ((char *) mi->name, mi->die, cu); |
3da10d80 KS |
5770 | fn_flp->fn_fields[mi->index].physname = physname ? physname : ""; |
5771 | } | |
5772 | } | |
5773 | ||
a766d390 DE |
5774 | /* Go objects should be embedded in a DW_TAG_module DIE, |
5775 | and it's not clear if/how imported objects will appear. | |
5776 | To keep Go support simple until that's worked out, | |
5777 | go back through what we've read and create something usable. | |
5778 | We could do this while processing each DIE, and feels kinda cleaner, | |
5779 | but that way is more invasive. | |
5780 | This is to, for example, allow the user to type "p var" or "b main" | |
5781 | without having to specify the package name, and allow lookups | |
5782 | of module.object to work in contexts that use the expression | |
5783 | parser. */ | |
5784 | ||
5785 | static void | |
5786 | fixup_go_packaging (struct dwarf2_cu *cu) | |
5787 | { | |
5788 | char *package_name = NULL; | |
5789 | struct pending *list; | |
5790 | int i; | |
5791 | ||
5792 | for (list = global_symbols; list != NULL; list = list->next) | |
5793 | { | |
5794 | for (i = 0; i < list->nsyms; ++i) | |
5795 | { | |
5796 | struct symbol *sym = list->symbol[i]; | |
5797 | ||
5798 | if (SYMBOL_LANGUAGE (sym) == language_go | |
5799 | && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
5800 | { | |
5801 | char *this_package_name = go_symbol_package_name (sym); | |
5802 | ||
5803 | if (this_package_name == NULL) | |
5804 | continue; | |
5805 | if (package_name == NULL) | |
5806 | package_name = this_package_name; | |
5807 | else | |
5808 | { | |
5809 | if (strcmp (package_name, this_package_name) != 0) | |
5810 | complaint (&symfile_complaints, | |
5811 | _("Symtab %s has objects from two different Go packages: %s and %s"), | |
5812 | (sym->symtab && sym->symtab->filename | |
5813 | ? sym->symtab->filename | |
5814 | : cu->objfile->name), | |
5815 | this_package_name, package_name); | |
5816 | xfree (this_package_name); | |
5817 | } | |
5818 | } | |
5819 | } | |
5820 | } | |
5821 | ||
5822 | if (package_name != NULL) | |
5823 | { | |
5824 | struct objfile *objfile = cu->objfile; | |
5825 | struct type *type = init_type (TYPE_CODE_MODULE, 0, 0, | |
5826 | package_name, objfile); | |
5827 | struct symbol *sym; | |
5828 | ||
5829 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
5830 | ||
5831 | sym = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symbol); | |
5832 | SYMBOL_SET_LANGUAGE (sym, language_go); | |
5833 | SYMBOL_SET_NAMES (sym, package_name, strlen (package_name), 1, objfile); | |
5834 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, | |
5835 | e.g., "main" finds the "main" module and not C's main(). */ | |
5836 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
5837 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
5838 | SYMBOL_TYPE (sym) = type; | |
5839 | ||
5840 | add_symbol_to_list (sym, &global_symbols); | |
5841 | ||
5842 | xfree (package_name); | |
5843 | } | |
5844 | } | |
5845 | ||
95554aad TT |
5846 | static void compute_symtab_includes (struct dwarf2_per_cu_data *per_cu); |
5847 | ||
5848 | /* Return the symtab for PER_CU. This works properly regardless of | |
5849 | whether we're using the index or psymtabs. */ | |
5850 | ||
5851 | static struct symtab * | |
5852 | get_symtab (struct dwarf2_per_cu_data *per_cu) | |
5853 | { | |
5854 | return (dwarf2_per_objfile->using_index | |
5855 | ? per_cu->v.quick->symtab | |
5856 | : per_cu->v.psymtab->symtab); | |
5857 | } | |
5858 | ||
5859 | /* A helper function for computing the list of all symbol tables | |
5860 | included by PER_CU. */ | |
5861 | ||
5862 | static void | |
5863 | recursively_compute_inclusions (VEC (dwarf2_per_cu_ptr) **result, | |
5864 | htab_t all_children, | |
5865 | struct dwarf2_per_cu_data *per_cu) | |
5866 | { | |
5867 | void **slot; | |
5868 | int ix; | |
5869 | struct dwarf2_per_cu_data *iter; | |
5870 | ||
5871 | slot = htab_find_slot (all_children, per_cu, INSERT); | |
5872 | if (*slot != NULL) | |
5873 | { | |
5874 | /* This inclusion and its children have been processed. */ | |
5875 | return; | |
5876 | } | |
5877 | ||
5878 | *slot = per_cu; | |
5879 | /* Only add a CU if it has a symbol table. */ | |
5880 | if (get_symtab (per_cu) != NULL) | |
5881 | VEC_safe_push (dwarf2_per_cu_ptr, *result, per_cu); | |
5882 | ||
5883 | for (ix = 0; | |
5884 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, ix, iter); | |
5885 | ++ix) | |
5886 | recursively_compute_inclusions (result, all_children, iter); | |
5887 | } | |
5888 | ||
5889 | /* Compute the symtab 'includes' fields for the symtab related to | |
5890 | PER_CU. */ | |
5891 | ||
5892 | static void | |
5893 | compute_symtab_includes (struct dwarf2_per_cu_data *per_cu) | |
5894 | { | |
5895 | if (!VEC_empty (dwarf2_per_cu_ptr, per_cu->imported_symtabs)) | |
5896 | { | |
5897 | int ix, len; | |
5898 | struct dwarf2_per_cu_data *iter; | |
5899 | VEC (dwarf2_per_cu_ptr) *result_children = NULL; | |
5900 | htab_t all_children; | |
5901 | struct symtab *symtab = get_symtab (per_cu); | |
5902 | ||
5903 | /* If we don't have a symtab, we can just skip this case. */ | |
5904 | if (symtab == NULL) | |
5905 | return; | |
5906 | ||
5907 | all_children = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, | |
5908 | NULL, xcalloc, xfree); | |
5909 | ||
5910 | for (ix = 0; | |
5911 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, | |
5912 | ix, iter); | |
5913 | ++ix) | |
5914 | recursively_compute_inclusions (&result_children, all_children, iter); | |
5915 | ||
5916 | /* Now we have a transitive closure of all the included CUs, so | |
5917 | we can convert it to a list of symtabs. */ | |
5918 | len = VEC_length (dwarf2_per_cu_ptr, result_children); | |
5919 | symtab->includes | |
5920 | = obstack_alloc (&dwarf2_per_objfile->objfile->objfile_obstack, | |
5921 | (len + 1) * sizeof (struct symtab *)); | |
5922 | for (ix = 0; | |
5923 | VEC_iterate (dwarf2_per_cu_ptr, result_children, ix, iter); | |
5924 | ++ix) | |
5925 | symtab->includes[ix] = get_symtab (iter); | |
5926 | symtab->includes[len] = NULL; | |
5927 | ||
5928 | VEC_free (dwarf2_per_cu_ptr, result_children); | |
5929 | htab_delete (all_children); | |
5930 | } | |
5931 | } | |
5932 | ||
5933 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
5934 | read. */ | |
5935 | ||
5936 | static void | |
5937 | process_cu_includes (void) | |
5938 | { | |
5939 | int ix; | |
5940 | struct dwarf2_per_cu_data *iter; | |
5941 | ||
5942 | for (ix = 0; | |
5943 | VEC_iterate (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus, | |
5944 | ix, iter); | |
5945 | ++ix) | |
5946 | compute_symtab_includes (iter); | |
5947 | ||
5948 | VEC_free (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus); | |
5949 | } | |
5950 | ||
9cdd5dbd | 5951 | /* Generate full symbol information for PER_CU, whose DIEs have |
10b3939b DJ |
5952 | already been loaded into memory. */ |
5953 | ||
5954 | static void | |
95554aad TT |
5955 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu, |
5956 | enum language pretend_language) | |
10b3939b | 5957 | { |
10b3939b | 5958 | struct dwarf2_cu *cu = per_cu->cu; |
9291a0cd | 5959 | struct objfile *objfile = per_cu->objfile; |
10b3939b DJ |
5960 | CORE_ADDR lowpc, highpc; |
5961 | struct symtab *symtab; | |
3da10d80 | 5962 | struct cleanup *back_to, *delayed_list_cleanup; |
10b3939b DJ |
5963 | CORE_ADDR baseaddr; |
5964 | ||
45cfd468 DE |
5965 | if (dwarf2_read_debug) |
5966 | { | |
5967 | fprintf_unfiltered (gdb_stdlog, | |
5968 | "Expanding symtab of %s at offset 0x%x\n", | |
5969 | per_cu->is_debug_types ? "TU" : "CU", | |
5970 | per_cu->offset.sect_off); | |
5971 | } | |
5972 | ||
10b3939b DJ |
5973 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
5974 | ||
10b3939b DJ |
5975 | buildsym_init (); |
5976 | back_to = make_cleanup (really_free_pendings, NULL); | |
3da10d80 | 5977 | delayed_list_cleanup = make_cleanup (free_delayed_list, cu); |
10b3939b DJ |
5978 | |
5979 | cu->list_in_scope = &file_symbols; | |
c906108c | 5980 | |
95554aad TT |
5981 | cu->language = pretend_language; |
5982 | cu->language_defn = language_def (cu->language); | |
5983 | ||
c906108c | 5984 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 5985 | process_die (cu->dies, cu); |
c906108c | 5986 | |
a766d390 DE |
5987 | /* For now fudge the Go package. */ |
5988 | if (cu->language == language_go) | |
5989 | fixup_go_packaging (cu); | |
5990 | ||
3da10d80 KS |
5991 | /* Now that we have processed all the DIEs in the CU, all the types |
5992 | should be complete, and it should now be safe to compute all of the | |
5993 | physnames. */ | |
5994 | compute_delayed_physnames (cu); | |
5995 | do_cleanups (delayed_list_cleanup); | |
5996 | ||
fae299cd DC |
5997 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
5998 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
5999 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 6000 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 6001 | |
613e1657 | 6002 | symtab = end_symtab (highpc + baseaddr, objfile, SECT_OFF_TEXT (objfile)); |
c906108c | 6003 | |
8be455d7 | 6004 | if (symtab != NULL) |
c906108c | 6005 | { |
df15bd07 | 6006 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 6007 | |
8be455d7 JK |
6008 | /* Set symtab language to language from DW_AT_language. If the |
6009 | compilation is from a C file generated by language preprocessors, do | |
6010 | not set the language if it was already deduced by start_subfile. */ | |
6011 | if (!(cu->language == language_c && symtab->language != language_c)) | |
6012 | symtab->language = cu->language; | |
6013 | ||
6014 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
6015 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
6016 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
6017 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
6018 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
6019 | |
6020 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
6021 | needed, it would be wrong due to missing DW_AT_producer there. | |
6022 | ||
6023 | Still one can confuse GDB by using non-standard GCC compilation | |
6024 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
6025 | */ | |
ab260dad | 6026 | if (cu->has_loclist && gcc_4_minor >= 5) |
8be455d7 | 6027 | symtab->locations_valid = 1; |
e0d00bc7 JK |
6028 | |
6029 | if (gcc_4_minor >= 5) | |
6030 | symtab->epilogue_unwind_valid = 1; | |
96408a79 SA |
6031 | |
6032 | symtab->call_site_htab = cu->call_site_htab; | |
c906108c | 6033 | } |
9291a0cd TT |
6034 | |
6035 | if (dwarf2_per_objfile->using_index) | |
6036 | per_cu->v.quick->symtab = symtab; | |
6037 | else | |
6038 | { | |
6039 | struct partial_symtab *pst = per_cu->v.psymtab; | |
6040 | pst->symtab = symtab; | |
6041 | pst->readin = 1; | |
6042 | } | |
c906108c | 6043 | |
95554aad TT |
6044 | /* Push it for inclusion processing later. */ |
6045 | VEC_safe_push (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus, per_cu); | |
6046 | ||
c906108c | 6047 | do_cleanups (back_to); |
45cfd468 DE |
6048 | |
6049 | if (dwarf2_read_debug) | |
6050 | { | |
6051 | fprintf_unfiltered (gdb_stdlog, | |
6052 | "Done expanding symtab of %s at offset 0x%x\n", | |
6053 | per_cu->is_debug_types ? "TU" : "CU", | |
6054 | per_cu->offset.sect_off); | |
6055 | } | |
c906108c SS |
6056 | } |
6057 | ||
95554aad TT |
6058 | /* Process an imported unit DIE. */ |
6059 | ||
6060 | static void | |
6061 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
6062 | { | |
6063 | struct attribute *attr; | |
6064 | ||
6065 | attr = dwarf2_attr (die, DW_AT_import, cu); | |
6066 | if (attr != NULL) | |
6067 | { | |
6068 | struct dwarf2_per_cu_data *per_cu; | |
6069 | struct symtab *imported_symtab; | |
6070 | sect_offset offset; | |
6071 | ||
6072 | offset = dwarf2_get_ref_die_offset (attr); | |
6073 | per_cu = dwarf2_find_containing_comp_unit (offset, cu->objfile); | |
6074 | ||
6075 | /* Queue the unit, if needed. */ | |
6076 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) | |
6077 | load_full_comp_unit (per_cu, cu->language); | |
6078 | ||
6079 | VEC_safe_push (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, | |
6080 | per_cu); | |
6081 | } | |
6082 | } | |
6083 | ||
c906108c SS |
6084 | /* Process a die and its children. */ |
6085 | ||
6086 | static void | |
e7c27a73 | 6087 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
6088 | { |
6089 | switch (die->tag) | |
6090 | { | |
6091 | case DW_TAG_padding: | |
6092 | break; | |
6093 | case DW_TAG_compile_unit: | |
95554aad | 6094 | case DW_TAG_partial_unit: |
e7c27a73 | 6095 | read_file_scope (die, cu); |
c906108c | 6096 | break; |
348e048f DE |
6097 | case DW_TAG_type_unit: |
6098 | read_type_unit_scope (die, cu); | |
6099 | break; | |
c906108c | 6100 | case DW_TAG_subprogram: |
c906108c | 6101 | case DW_TAG_inlined_subroutine: |
edb3359d | 6102 | read_func_scope (die, cu); |
c906108c SS |
6103 | break; |
6104 | case DW_TAG_lexical_block: | |
14898363 L |
6105 | case DW_TAG_try_block: |
6106 | case DW_TAG_catch_block: | |
e7c27a73 | 6107 | read_lexical_block_scope (die, cu); |
c906108c | 6108 | break; |
96408a79 SA |
6109 | case DW_TAG_GNU_call_site: |
6110 | read_call_site_scope (die, cu); | |
6111 | break; | |
c906108c | 6112 | case DW_TAG_class_type: |
680b30c7 | 6113 | case DW_TAG_interface_type: |
c906108c SS |
6114 | case DW_TAG_structure_type: |
6115 | case DW_TAG_union_type: | |
134d01f1 | 6116 | process_structure_scope (die, cu); |
c906108c SS |
6117 | break; |
6118 | case DW_TAG_enumeration_type: | |
134d01f1 | 6119 | process_enumeration_scope (die, cu); |
c906108c | 6120 | break; |
134d01f1 | 6121 | |
f792889a DJ |
6122 | /* These dies have a type, but processing them does not create |
6123 | a symbol or recurse to process the children. Therefore we can | |
6124 | read them on-demand through read_type_die. */ | |
c906108c | 6125 | case DW_TAG_subroutine_type: |
72019c9c | 6126 | case DW_TAG_set_type: |
c906108c | 6127 | case DW_TAG_array_type: |
c906108c | 6128 | case DW_TAG_pointer_type: |
c906108c | 6129 | case DW_TAG_ptr_to_member_type: |
c906108c | 6130 | case DW_TAG_reference_type: |
c906108c | 6131 | case DW_TAG_string_type: |
c906108c | 6132 | break; |
134d01f1 | 6133 | |
c906108c | 6134 | case DW_TAG_base_type: |
a02abb62 | 6135 | case DW_TAG_subrange_type: |
cb249c71 | 6136 | case DW_TAG_typedef: |
134d01f1 DJ |
6137 | /* Add a typedef symbol for the type definition, if it has a |
6138 | DW_AT_name. */ | |
f792889a | 6139 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 6140 | break; |
c906108c | 6141 | case DW_TAG_common_block: |
e7c27a73 | 6142 | read_common_block (die, cu); |
c906108c SS |
6143 | break; |
6144 | case DW_TAG_common_inclusion: | |
6145 | break; | |
d9fa45fe | 6146 | case DW_TAG_namespace: |
63d06c5c | 6147 | processing_has_namespace_info = 1; |
e7c27a73 | 6148 | read_namespace (die, cu); |
d9fa45fe | 6149 | break; |
5d7cb8df | 6150 | case DW_TAG_module: |
f55ee35c | 6151 | processing_has_namespace_info = 1; |
5d7cb8df JK |
6152 | read_module (die, cu); |
6153 | break; | |
d9fa45fe DC |
6154 | case DW_TAG_imported_declaration: |
6155 | case DW_TAG_imported_module: | |
63d06c5c | 6156 | processing_has_namespace_info = 1; |
27aa8d6a SW |
6157 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
6158 | || cu->language != language_fortran)) | |
6159 | complaint (&symfile_complaints, _("Tag '%s' has unexpected children"), | |
6160 | dwarf_tag_name (die->tag)); | |
6161 | read_import_statement (die, cu); | |
d9fa45fe | 6162 | break; |
95554aad TT |
6163 | |
6164 | case DW_TAG_imported_unit: | |
6165 | process_imported_unit_die (die, cu); | |
6166 | break; | |
6167 | ||
c906108c | 6168 | default: |
e7c27a73 | 6169 | new_symbol (die, NULL, cu); |
c906108c SS |
6170 | break; |
6171 | } | |
6172 | } | |
6173 | ||
94af9270 KS |
6174 | /* A helper function for dwarf2_compute_name which determines whether DIE |
6175 | needs to have the name of the scope prepended to the name listed in the | |
6176 | die. */ | |
6177 | ||
6178 | static int | |
6179 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
6180 | { | |
1c809c68 TT |
6181 | struct attribute *attr; |
6182 | ||
94af9270 KS |
6183 | switch (die->tag) |
6184 | { | |
6185 | case DW_TAG_namespace: | |
6186 | case DW_TAG_typedef: | |
6187 | case DW_TAG_class_type: | |
6188 | case DW_TAG_interface_type: | |
6189 | case DW_TAG_structure_type: | |
6190 | case DW_TAG_union_type: | |
6191 | case DW_TAG_enumeration_type: | |
6192 | case DW_TAG_enumerator: | |
6193 | case DW_TAG_subprogram: | |
6194 | case DW_TAG_member: | |
6195 | return 1; | |
6196 | ||
6197 | case DW_TAG_variable: | |
c2b0a229 | 6198 | case DW_TAG_constant: |
94af9270 KS |
6199 | /* We only need to prefix "globally" visible variables. These include |
6200 | any variable marked with DW_AT_external or any variable that | |
6201 | lives in a namespace. [Variables in anonymous namespaces | |
6202 | require prefixing, but they are not DW_AT_external.] */ | |
6203 | ||
6204 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
6205 | { | |
6206 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 6207 | |
94af9270 KS |
6208 | return die_needs_namespace (die_specification (die, &spec_cu), |
6209 | spec_cu); | |
6210 | } | |
6211 | ||
1c809c68 | 6212 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
6213 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
6214 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
6215 | return 0; |
6216 | /* A variable in a lexical block of some kind does not need a | |
6217 | namespace, even though in C++ such variables may be external | |
6218 | and have a mangled name. */ | |
6219 | if (die->parent->tag == DW_TAG_lexical_block | |
6220 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
6221 | || die->parent->tag == DW_TAG_catch_block |
6222 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
6223 | return 0; |
6224 | return 1; | |
94af9270 KS |
6225 | |
6226 | default: | |
6227 | return 0; | |
6228 | } | |
6229 | } | |
6230 | ||
98bfdba5 PA |
6231 | /* Retrieve the last character from a mem_file. */ |
6232 | ||
6233 | static void | |
6234 | do_ui_file_peek_last (void *object, const char *buffer, long length) | |
6235 | { | |
6236 | char *last_char_p = (char *) object; | |
6237 | ||
6238 | if (length > 0) | |
6239 | *last_char_p = buffer[length - 1]; | |
6240 | } | |
6241 | ||
94af9270 | 6242 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 DE |
6243 | compute the physname for the object, which include a method's: |
6244 | - formal parameters (C++/Java), | |
6245 | - receiver type (Go), | |
6246 | - return type (Java). | |
6247 | ||
6248 | The term "physname" is a bit confusing. | |
6249 | For C++, for example, it is the demangled name. | |
6250 | For Go, for example, it's the mangled name. | |
94af9270 | 6251 | |
af6b7be1 JB |
6252 | For Ada, return the DIE's linkage name rather than the fully qualified |
6253 | name. PHYSNAME is ignored.. | |
6254 | ||
94af9270 KS |
6255 | The result is allocated on the objfile_obstack and canonicalized. */ |
6256 | ||
6257 | static const char * | |
6258 | dwarf2_compute_name (char *name, struct die_info *die, struct dwarf2_cu *cu, | |
6259 | int physname) | |
6260 | { | |
bb5ed363 DE |
6261 | struct objfile *objfile = cu->objfile; |
6262 | ||
94af9270 KS |
6263 | if (name == NULL) |
6264 | name = dwarf2_name (die, cu); | |
6265 | ||
f55ee35c JK |
6266 | /* For Fortran GDB prefers DW_AT_*linkage_name if present but otherwise |
6267 | compute it by typename_concat inside GDB. */ | |
6268 | if (cu->language == language_ada | |
6269 | || (cu->language == language_fortran && physname)) | |
6270 | { | |
6271 | /* For Ada unit, we prefer the linkage name over the name, as | |
6272 | the former contains the exported name, which the user expects | |
6273 | to be able to reference. Ideally, we want the user to be able | |
6274 | to reference this entity using either natural or linkage name, | |
6275 | but we haven't started looking at this enhancement yet. */ | |
6276 | struct attribute *attr; | |
6277 | ||
6278 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
6279 | if (attr == NULL) | |
6280 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
6281 | if (attr && DW_STRING (attr)) | |
6282 | return DW_STRING (attr); | |
6283 | } | |
6284 | ||
94af9270 KS |
6285 | /* These are the only languages we know how to qualify names in. */ |
6286 | if (name != NULL | |
f55ee35c JK |
6287 | && (cu->language == language_cplus || cu->language == language_java |
6288 | || cu->language == language_fortran)) | |
94af9270 KS |
6289 | { |
6290 | if (die_needs_namespace (die, cu)) | |
6291 | { | |
6292 | long length; | |
0d5cff50 | 6293 | const char *prefix; |
94af9270 KS |
6294 | struct ui_file *buf; |
6295 | ||
6296 | prefix = determine_prefix (die, cu); | |
6297 | buf = mem_fileopen (); | |
6298 | if (*prefix != '\0') | |
6299 | { | |
f55ee35c JK |
6300 | char *prefixed_name = typename_concat (NULL, prefix, name, |
6301 | physname, cu); | |
9a619af0 | 6302 | |
94af9270 KS |
6303 | fputs_unfiltered (prefixed_name, buf); |
6304 | xfree (prefixed_name); | |
6305 | } | |
6306 | else | |
62d5b8da | 6307 | fputs_unfiltered (name, buf); |
94af9270 | 6308 | |
98bfdba5 PA |
6309 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
6310 | as children with DW_TAG_template_type_param or | |
6311 | DW_TAG_value_type_param. If the latter, add them to the name | |
6312 | here. If the name already has template parameters, then | |
6313 | skip this step; some versions of GCC emit both, and | |
6314 | it is more efficient to use the pre-computed name. | |
6315 | ||
6316 | Something to keep in mind about this process: it is very | |
6317 | unlikely, or in some cases downright impossible, to produce | |
6318 | something that will match the mangled name of a function. | |
6319 | If the definition of the function has the same debug info, | |
6320 | we should be able to match up with it anyway. But fallbacks | |
6321 | using the minimal symbol, for instance to find a method | |
6322 | implemented in a stripped copy of libstdc++, will not work. | |
6323 | If we do not have debug info for the definition, we will have to | |
6324 | match them up some other way. | |
6325 | ||
6326 | When we do name matching there is a related problem with function | |
6327 | templates; two instantiated function templates are allowed to | |
6328 | differ only by their return types, which we do not add here. */ | |
6329 | ||
6330 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
6331 | { | |
6332 | struct attribute *attr; | |
6333 | struct die_info *child; | |
6334 | int first = 1; | |
6335 | ||
6336 | die->building_fullname = 1; | |
6337 | ||
6338 | for (child = die->child; child != NULL; child = child->sibling) | |
6339 | { | |
6340 | struct type *type; | |
12df843f | 6341 | LONGEST value; |
98bfdba5 PA |
6342 | gdb_byte *bytes; |
6343 | struct dwarf2_locexpr_baton *baton; | |
6344 | struct value *v; | |
6345 | ||
6346 | if (child->tag != DW_TAG_template_type_param | |
6347 | && child->tag != DW_TAG_template_value_param) | |
6348 | continue; | |
6349 | ||
6350 | if (first) | |
6351 | { | |
6352 | fputs_unfiltered ("<", buf); | |
6353 | first = 0; | |
6354 | } | |
6355 | else | |
6356 | fputs_unfiltered (", ", buf); | |
6357 | ||
6358 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
6359 | if (attr == NULL) | |
6360 | { | |
6361 | complaint (&symfile_complaints, | |
6362 | _("template parameter missing DW_AT_type")); | |
6363 | fputs_unfiltered ("UNKNOWN_TYPE", buf); | |
6364 | continue; | |
6365 | } | |
6366 | type = die_type (child, cu); | |
6367 | ||
6368 | if (child->tag == DW_TAG_template_type_param) | |
6369 | { | |
6370 | c_print_type (type, "", buf, -1, 0); | |
6371 | continue; | |
6372 | } | |
6373 | ||
6374 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
6375 | if (attr == NULL) | |
6376 | { | |
6377 | complaint (&symfile_complaints, | |
3e43a32a MS |
6378 | _("template parameter missing " |
6379 | "DW_AT_const_value")); | |
98bfdba5 PA |
6380 | fputs_unfiltered ("UNKNOWN_VALUE", buf); |
6381 | continue; | |
6382 | } | |
6383 | ||
6384 | dwarf2_const_value_attr (attr, type, name, | |
6385 | &cu->comp_unit_obstack, cu, | |
6386 | &value, &bytes, &baton); | |
6387 | ||
6388 | if (TYPE_NOSIGN (type)) | |
6389 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
6390 | changed, this can use value_print instead. */ | |
6391 | c_printchar (value, type, buf); | |
6392 | else | |
6393 | { | |
6394 | struct value_print_options opts; | |
6395 | ||
6396 | if (baton != NULL) | |
6397 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
6398 | baton->data, | |
6399 | baton->size, | |
6400 | baton->per_cu); | |
6401 | else if (bytes != NULL) | |
6402 | { | |
6403 | v = allocate_value (type); | |
6404 | memcpy (value_contents_writeable (v), bytes, | |
6405 | TYPE_LENGTH (type)); | |
6406 | } | |
6407 | else | |
6408 | v = value_from_longest (type, value); | |
6409 | ||
3e43a32a MS |
6410 | /* Specify decimal so that we do not depend on |
6411 | the radix. */ | |
98bfdba5 PA |
6412 | get_formatted_print_options (&opts, 'd'); |
6413 | opts.raw = 1; | |
6414 | value_print (v, buf, &opts); | |
6415 | release_value (v); | |
6416 | value_free (v); | |
6417 | } | |
6418 | } | |
6419 | ||
6420 | die->building_fullname = 0; | |
6421 | ||
6422 | if (!first) | |
6423 | { | |
6424 | /* Close the argument list, with a space if necessary | |
6425 | (nested templates). */ | |
6426 | char last_char = '\0'; | |
6427 | ui_file_put (buf, do_ui_file_peek_last, &last_char); | |
6428 | if (last_char == '>') | |
6429 | fputs_unfiltered (" >", buf); | |
6430 | else | |
6431 | fputs_unfiltered (">", buf); | |
6432 | } | |
6433 | } | |
6434 | ||
94af9270 KS |
6435 | /* For Java and C++ methods, append formal parameter type |
6436 | information, if PHYSNAME. */ | |
6e70227d | 6437 | |
94af9270 KS |
6438 | if (physname && die->tag == DW_TAG_subprogram |
6439 | && (cu->language == language_cplus | |
6440 | || cu->language == language_java)) | |
6441 | { | |
6442 | struct type *type = read_type_die (die, cu); | |
6443 | ||
3167638f | 6444 | c_type_print_args (type, buf, 1, cu->language); |
94af9270 KS |
6445 | |
6446 | if (cu->language == language_java) | |
6447 | { | |
6448 | /* For java, we must append the return type to method | |
0963b4bd | 6449 | names. */ |
94af9270 KS |
6450 | if (die->tag == DW_TAG_subprogram) |
6451 | java_print_type (TYPE_TARGET_TYPE (type), "", buf, | |
6452 | 0, 0); | |
6453 | } | |
6454 | else if (cu->language == language_cplus) | |
6455 | { | |
60430eff DJ |
6456 | /* Assume that an artificial first parameter is |
6457 | "this", but do not crash if it is not. RealView | |
6458 | marks unnamed (and thus unused) parameters as | |
6459 | artificial; there is no way to differentiate | |
6460 | the two cases. */ | |
94af9270 KS |
6461 | if (TYPE_NFIELDS (type) > 0 |
6462 | && TYPE_FIELD_ARTIFICIAL (type, 0) | |
60430eff | 6463 | && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_PTR |
3e43a32a MS |
6464 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, |
6465 | 0)))) | |
94af9270 KS |
6466 | fputs_unfiltered (" const", buf); |
6467 | } | |
6468 | } | |
6469 | ||
bb5ed363 | 6470 | name = ui_file_obsavestring (buf, &objfile->objfile_obstack, |
94af9270 KS |
6471 | &length); |
6472 | ui_file_delete (buf); | |
6473 | ||
6474 | if (cu->language == language_cplus) | |
6475 | { | |
6476 | char *cname | |
6477 | = dwarf2_canonicalize_name (name, cu, | |
bb5ed363 | 6478 | &objfile->objfile_obstack); |
9a619af0 | 6479 | |
94af9270 KS |
6480 | if (cname != NULL) |
6481 | name = cname; | |
6482 | } | |
6483 | } | |
6484 | } | |
6485 | ||
6486 | return name; | |
6487 | } | |
6488 | ||
0114d602 DJ |
6489 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
6490 | If scope qualifiers are appropriate they will be added. The result | |
6491 | will be allocated on the objfile_obstack, or NULL if the DIE does | |
94af9270 KS |
6492 | not have a name. NAME may either be from a previous call to |
6493 | dwarf2_name or NULL. | |
6494 | ||
0963b4bd | 6495 | The output string will be canonicalized (if C++/Java). */ |
0114d602 DJ |
6496 | |
6497 | static const char * | |
94af9270 | 6498 | dwarf2_full_name (char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 6499 | { |
94af9270 KS |
6500 | return dwarf2_compute_name (name, die, cu, 0); |
6501 | } | |
0114d602 | 6502 | |
94af9270 KS |
6503 | /* Construct a physname for the given DIE in CU. NAME may either be |
6504 | from a previous call to dwarf2_name or NULL. The result will be | |
6505 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
6506 | name. | |
0114d602 | 6507 | |
94af9270 | 6508 | The output string will be canonicalized (if C++/Java). */ |
0114d602 | 6509 | |
94af9270 KS |
6510 | static const char * |
6511 | dwarf2_physname (char *name, struct die_info *die, struct dwarf2_cu *cu) | |
6512 | { | |
bb5ed363 | 6513 | struct objfile *objfile = cu->objfile; |
900e11f9 JK |
6514 | struct attribute *attr; |
6515 | const char *retval, *mangled = NULL, *canon = NULL; | |
6516 | struct cleanup *back_to; | |
6517 | int need_copy = 1; | |
6518 | ||
6519 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
6520 | on its own. */ | |
6521 | if (!die_needs_namespace (die, cu)) | |
6522 | return dwarf2_compute_name (name, die, cu, 1); | |
6523 | ||
6524 | back_to = make_cleanup (null_cleanup, NULL); | |
6525 | ||
6526 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
6527 | if (!attr) | |
6528 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
6529 | ||
6530 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB | |
6531 | has computed. */ | |
6532 | if (attr && DW_STRING (attr)) | |
6533 | { | |
6534 | char *demangled; | |
6535 | ||
6536 | mangled = DW_STRING (attr); | |
6537 | ||
6538 | /* Use DMGL_RET_DROP for C++ template functions to suppress their return | |
6539 | type. It is easier for GDB users to search for such functions as | |
6540 | `name(params)' than `long name(params)'. In such case the minimal | |
6541 | symbol names do not match the full symbol names but for template | |
6542 | functions there is never a need to look up their definition from their | |
6543 | declaration so the only disadvantage remains the minimal symbol | |
6544 | variant `long name(params)' does not have the proper inferior type. | |
6545 | */ | |
6546 | ||
a766d390 DE |
6547 | if (cu->language == language_go) |
6548 | { | |
6549 | /* This is a lie, but we already lie to the caller new_symbol_full. | |
6550 | new_symbol_full assumes we return the mangled name. | |
6551 | This just undoes that lie until things are cleaned up. */ | |
6552 | demangled = NULL; | |
6553 | } | |
6554 | else | |
6555 | { | |
6556 | demangled = cplus_demangle (mangled, | |
6557 | (DMGL_PARAMS | DMGL_ANSI | |
6558 | | (cu->language == language_java | |
6559 | ? DMGL_JAVA | DMGL_RET_POSTFIX | |
6560 | : DMGL_RET_DROP))); | |
6561 | } | |
900e11f9 JK |
6562 | if (demangled) |
6563 | { | |
6564 | make_cleanup (xfree, demangled); | |
6565 | canon = demangled; | |
6566 | } | |
6567 | else | |
6568 | { | |
6569 | canon = mangled; | |
6570 | need_copy = 0; | |
6571 | } | |
6572 | } | |
6573 | ||
6574 | if (canon == NULL || check_physname) | |
6575 | { | |
6576 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
6577 | ||
6578 | if (canon != NULL && strcmp (physname, canon) != 0) | |
6579 | { | |
6580 | /* It may not mean a bug in GDB. The compiler could also | |
6581 | compute DW_AT_linkage_name incorrectly. But in such case | |
6582 | GDB would need to be bug-to-bug compatible. */ | |
6583 | ||
6584 | complaint (&symfile_complaints, | |
6585 | _("Computed physname <%s> does not match demangled <%s> " | |
6586 | "(from linkage <%s>) - DIE at 0x%x [in module %s]"), | |
b64f50a1 | 6587 | physname, canon, mangled, die->offset.sect_off, objfile->name); |
900e11f9 JK |
6588 | |
6589 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
6590 | is available here - over computed PHYSNAME. It is safer | |
6591 | against both buggy GDB and buggy compilers. */ | |
6592 | ||
6593 | retval = canon; | |
6594 | } | |
6595 | else | |
6596 | { | |
6597 | retval = physname; | |
6598 | need_copy = 0; | |
6599 | } | |
6600 | } | |
6601 | else | |
6602 | retval = canon; | |
6603 | ||
6604 | if (need_copy) | |
6605 | retval = obsavestring (retval, strlen (retval), | |
bb5ed363 | 6606 | &objfile->objfile_obstack); |
900e11f9 JK |
6607 | |
6608 | do_cleanups (back_to); | |
6609 | return retval; | |
0114d602 DJ |
6610 | } |
6611 | ||
27aa8d6a SW |
6612 | /* Read the import statement specified by the given die and record it. */ |
6613 | ||
6614 | static void | |
6615 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
6616 | { | |
bb5ed363 | 6617 | struct objfile *objfile = cu->objfile; |
27aa8d6a | 6618 | struct attribute *import_attr; |
32019081 | 6619 | struct die_info *imported_die, *child_die; |
de4affc9 | 6620 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 6621 | const char *imported_name; |
794684b6 | 6622 | const char *imported_name_prefix; |
13387711 SW |
6623 | const char *canonical_name; |
6624 | const char *import_alias; | |
6625 | const char *imported_declaration = NULL; | |
794684b6 | 6626 | const char *import_prefix; |
32019081 JK |
6627 | VEC (const_char_ptr) *excludes = NULL; |
6628 | struct cleanup *cleanups; | |
13387711 SW |
6629 | |
6630 | char *temp; | |
27aa8d6a SW |
6631 | |
6632 | import_attr = dwarf2_attr (die, DW_AT_import, cu); | |
6633 | if (import_attr == NULL) | |
6634 | { | |
6635 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
6636 | dwarf_tag_name (die->tag)); | |
6637 | return; | |
6638 | } | |
6639 | ||
de4affc9 CC |
6640 | imported_cu = cu; |
6641 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
6642 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
6643 | if (imported_name == NULL) |
6644 | { | |
6645 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
6646 | ||
6647 | The import in the following code: | |
6648 | namespace A | |
6649 | { | |
6650 | typedef int B; | |
6651 | } | |
6652 | ||
6653 | int main () | |
6654 | { | |
6655 | using A::B; | |
6656 | B b; | |
6657 | return b; | |
6658 | } | |
6659 | ||
6660 | ... | |
6661 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
6662 | <52> DW_AT_decl_file : 1 | |
6663 | <53> DW_AT_decl_line : 6 | |
6664 | <54> DW_AT_import : <0x75> | |
6665 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
6666 | <59> DW_AT_name : B | |
6667 | <5b> DW_AT_decl_file : 1 | |
6668 | <5c> DW_AT_decl_line : 2 | |
6669 | <5d> DW_AT_type : <0x6e> | |
6670 | ... | |
6671 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
6672 | <76> DW_AT_byte_size : 4 | |
6673 | <77> DW_AT_encoding : 5 (signed) | |
6674 | ||
6675 | imports the wrong die ( 0x75 instead of 0x58 ). | |
6676 | This case will be ignored until the gcc bug is fixed. */ | |
6677 | return; | |
6678 | } | |
6679 | ||
82856980 SW |
6680 | /* Figure out the local name after import. */ |
6681 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 6682 | |
794684b6 SW |
6683 | /* Figure out where the statement is being imported to. */ |
6684 | import_prefix = determine_prefix (die, cu); | |
6685 | ||
6686 | /* Figure out what the scope of the imported die is and prepend it | |
6687 | to the name of the imported die. */ | |
de4affc9 | 6688 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 6689 | |
f55ee35c JK |
6690 | if (imported_die->tag != DW_TAG_namespace |
6691 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 6692 | { |
13387711 SW |
6693 | imported_declaration = imported_name; |
6694 | canonical_name = imported_name_prefix; | |
794684b6 | 6695 | } |
13387711 | 6696 | else if (strlen (imported_name_prefix) > 0) |
794684b6 | 6697 | { |
13387711 SW |
6698 | temp = alloca (strlen (imported_name_prefix) |
6699 | + 2 + strlen (imported_name) + 1); | |
6700 | strcpy (temp, imported_name_prefix); | |
6701 | strcat (temp, "::"); | |
6702 | strcat (temp, imported_name); | |
6703 | canonical_name = temp; | |
794684b6 | 6704 | } |
13387711 SW |
6705 | else |
6706 | canonical_name = imported_name; | |
794684b6 | 6707 | |
32019081 JK |
6708 | cleanups = make_cleanup (VEC_cleanup (const_char_ptr), &excludes); |
6709 | ||
6710 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) | |
6711 | for (child_die = die->child; child_die && child_die->tag; | |
6712 | child_die = sibling_die (child_die)) | |
6713 | { | |
6714 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
6715 | represented by an imported module entry with an import attribute | |
6716 | referring to the module and owned entries corresponding to those | |
6717 | entities that are renamed as part of being imported. */ | |
6718 | ||
6719 | if (child_die->tag != DW_TAG_imported_declaration) | |
6720 | { | |
6721 | complaint (&symfile_complaints, | |
6722 | _("child DW_TAG_imported_declaration expected " | |
6723 | "- DIE at 0x%x [in module %s]"), | |
b64f50a1 | 6724 | child_die->offset.sect_off, objfile->name); |
32019081 JK |
6725 | continue; |
6726 | } | |
6727 | ||
6728 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
6729 | if (import_attr == NULL) | |
6730 | { | |
6731 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
6732 | dwarf_tag_name (child_die->tag)); | |
6733 | continue; | |
6734 | } | |
6735 | ||
6736 | imported_cu = cu; | |
6737 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
6738 | &imported_cu); | |
6739 | imported_name = dwarf2_name (imported_die, imported_cu); | |
6740 | if (imported_name == NULL) | |
6741 | { | |
6742 | complaint (&symfile_complaints, | |
6743 | _("child DW_TAG_imported_declaration has unknown " | |
6744 | "imported name - DIE at 0x%x [in module %s]"), | |
b64f50a1 | 6745 | child_die->offset.sect_off, objfile->name); |
32019081 JK |
6746 | continue; |
6747 | } | |
6748 | ||
6749 | VEC_safe_push (const_char_ptr, excludes, imported_name); | |
6750 | ||
6751 | process_die (child_die, cu); | |
6752 | } | |
6753 | ||
c0cc3a76 SW |
6754 | cp_add_using_directive (import_prefix, |
6755 | canonical_name, | |
6756 | import_alias, | |
13387711 | 6757 | imported_declaration, |
32019081 | 6758 | excludes, |
bb5ed363 | 6759 | &objfile->objfile_obstack); |
32019081 JK |
6760 | |
6761 | do_cleanups (cleanups); | |
27aa8d6a SW |
6762 | } |
6763 | ||
ae2de4f8 DE |
6764 | /* Cleanup function for read_file_scope. */ |
6765 | ||
cb1df416 DJ |
6766 | static void |
6767 | free_cu_line_header (void *arg) | |
6768 | { | |
6769 | struct dwarf2_cu *cu = arg; | |
6770 | ||
6771 | free_line_header (cu->line_header); | |
6772 | cu->line_header = NULL; | |
6773 | } | |
6774 | ||
9291a0cd TT |
6775 | static void |
6776 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu, | |
6777 | char **name, char **comp_dir) | |
6778 | { | |
6779 | struct attribute *attr; | |
6780 | ||
6781 | *name = NULL; | |
6782 | *comp_dir = NULL; | |
6783 | ||
6784 | /* Find the filename. Do not use dwarf2_name here, since the filename | |
6785 | is not a source language identifier. */ | |
6786 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
6787 | if (attr) | |
6788 | { | |
6789 | *name = DW_STRING (attr); | |
6790 | } | |
6791 | ||
6792 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); | |
6793 | if (attr) | |
6794 | *comp_dir = DW_STRING (attr); | |
6795 | else if (*name != NULL && IS_ABSOLUTE_PATH (*name)) | |
6796 | { | |
6797 | *comp_dir = ldirname (*name); | |
6798 | if (*comp_dir != NULL) | |
6799 | make_cleanup (xfree, *comp_dir); | |
6800 | } | |
6801 | if (*comp_dir != NULL) | |
6802 | { | |
6803 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
6804 | directory, get rid of it. */ | |
6805 | char *cp = strchr (*comp_dir, ':'); | |
6806 | ||
6807 | if (cp && cp != *comp_dir && cp[-1] == '.' && cp[1] == '/') | |
6808 | *comp_dir = cp + 1; | |
6809 | } | |
6810 | ||
6811 | if (*name == NULL) | |
6812 | *name = "<unknown>"; | |
6813 | } | |
6814 | ||
f3f5162e DE |
6815 | /* Handle DW_AT_stmt_list for a compilation unit or type unit. |
6816 | DIE is the DW_TAG_compile_unit or DW_TAG_type_unit die for CU. | |
6817 | COMP_DIR is the compilation directory. | |
6818 | WANT_LINE_INFO is non-zero if the pc/line-number mapping is needed. */ | |
2ab95328 TT |
6819 | |
6820 | static void | |
6821 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
f3f5162e | 6822 | const char *comp_dir, int want_line_info) |
2ab95328 TT |
6823 | { |
6824 | struct attribute *attr; | |
2ab95328 | 6825 | |
2ab95328 TT |
6826 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
6827 | if (attr) | |
6828 | { | |
6829 | unsigned int line_offset = DW_UNSND (attr); | |
6830 | struct line_header *line_header | |
3019eac3 | 6831 | = dwarf_decode_line_header (line_offset, cu); |
2ab95328 TT |
6832 | |
6833 | if (line_header) | |
dee91e82 DE |
6834 | { |
6835 | cu->line_header = line_header; | |
6836 | make_cleanup (free_cu_line_header, cu); | |
f3f5162e | 6837 | dwarf_decode_lines (line_header, comp_dir, cu, NULL, want_line_info); |
dee91e82 | 6838 | } |
2ab95328 TT |
6839 | } |
6840 | } | |
6841 | ||
95554aad | 6842 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 6843 | |
c906108c | 6844 | static void |
e7c27a73 | 6845 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 6846 | { |
dee91e82 | 6847 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
debd256d | 6848 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2acceee2 | 6849 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
6850 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
6851 | struct attribute *attr; | |
e1024ff1 | 6852 | char *name = NULL; |
c906108c SS |
6853 | char *comp_dir = NULL; |
6854 | struct die_info *child_die; | |
6855 | bfd *abfd = objfile->obfd; | |
e142c38c | 6856 | CORE_ADDR baseaddr; |
6e70227d | 6857 | |
e142c38c | 6858 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c | 6859 | |
fae299cd | 6860 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
6861 | |
6862 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
6863 | from finish_block. */ | |
2acceee2 | 6864 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c SS |
6865 | lowpc = highpc; |
6866 | lowpc += baseaddr; | |
6867 | highpc += baseaddr; | |
6868 | ||
9291a0cd | 6869 | find_file_and_directory (die, cu, &name, &comp_dir); |
e1024ff1 | 6870 | |
95554aad | 6871 | prepare_one_comp_unit (cu, die, cu->language); |
303b6f5d | 6872 | |
f4b8a18d KW |
6873 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
6874 | standardised yet. As a workaround for the language detection we fall | |
6875 | back to the DW_AT_producer string. */ | |
6876 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
6877 | cu->language = language_opencl; | |
6878 | ||
3019eac3 DE |
6879 | /* Similar hack for Go. */ |
6880 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
6881 | set_cu_language (DW_LANG_Go, cu); | |
6882 | ||
6883 | /* We assume that we're processing GCC output. */ | |
6884 | processing_gcc_compilation = 2; | |
6885 | ||
6886 | processing_has_namespace_info = 0; | |
6887 | ||
6888 | start_symtab (name, comp_dir, lowpc); | |
6889 | record_debugformat ("DWARF 2"); | |
6890 | record_producer (cu->producer); | |
6891 | ||
6892 | /* Decode line number information if present. We do this before | |
6893 | processing child DIEs, so that the line header table is available | |
6894 | for DW_AT_decl_file. */ | |
6895 | handle_DW_AT_stmt_list (die, cu, comp_dir, 1); | |
6896 | ||
6897 | /* Process all dies in compilation unit. */ | |
6898 | if (die->child != NULL) | |
6899 | { | |
6900 | child_die = die->child; | |
6901 | while (child_die && child_die->tag) | |
6902 | { | |
6903 | process_die (child_die, cu); | |
6904 | child_die = sibling_die (child_die); | |
6905 | } | |
6906 | } | |
6907 | ||
6908 | /* Decode macro information, if present. Dwarf 2 macro information | |
6909 | refers to information in the line number info statement program | |
6910 | header, so we can only read it if we've read the header | |
6911 | successfully. */ | |
6912 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
6913 | if (attr && cu->line_header) | |
6914 | { | |
6915 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
6916 | complaint (&symfile_complaints, | |
6917 | _("CU refers to both DW_AT_GNU_macros and DW_AT_macro_info")); | |
6918 | ||
09262596 | 6919 | dwarf_decode_macros (cu, DW_UNSND (attr), comp_dir, 1); |
3019eac3 DE |
6920 | } |
6921 | else | |
6922 | { | |
6923 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
6924 | if (attr && cu->line_header) | |
6925 | { | |
6926 | unsigned int macro_offset = DW_UNSND (attr); | |
6927 | ||
09262596 | 6928 | dwarf_decode_macros (cu, macro_offset, comp_dir, 0); |
3019eac3 DE |
6929 | } |
6930 | } | |
6931 | ||
6932 | do_cleanups (back_to); | |
6933 | } | |
6934 | ||
6935 | /* Process DW_TAG_type_unit. | |
6936 | For TUs we want to skip the first top level sibling if it's not the | |
6937 | actual type being defined by this TU. In this case the first top | |
6938 | level sibling is there to provide context only. */ | |
6939 | ||
6940 | static void | |
6941 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
6942 | { | |
6943 | struct objfile *objfile = cu->objfile; | |
6944 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); | |
6945 | CORE_ADDR lowpc; | |
6946 | struct attribute *attr; | |
6947 | char *name = NULL; | |
6948 | char *comp_dir = NULL; | |
6949 | struct die_info *child_die; | |
6950 | bfd *abfd = objfile->obfd; | |
6951 | ||
6952 | /* start_symtab needs a low pc, but we don't really have one. | |
6953 | Do what read_file_scope would do in the absence of such info. */ | |
6954 | lowpc = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
6955 | ||
6956 | /* Find the filename. Do not use dwarf2_name here, since the filename | |
6957 | is not a source language identifier. */ | |
6958 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
6959 | if (attr) | |
6960 | name = DW_STRING (attr); | |
6961 | ||
6962 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); | |
6963 | if (attr) | |
6964 | comp_dir = DW_STRING (attr); | |
6965 | else if (name != NULL && IS_ABSOLUTE_PATH (name)) | |
6966 | { | |
6967 | comp_dir = ldirname (name); | |
6968 | if (comp_dir != NULL) | |
6969 | make_cleanup (xfree, comp_dir); | |
6970 | } | |
6971 | ||
6972 | if (name == NULL) | |
6973 | name = "<unknown>"; | |
6974 | ||
95554aad | 6975 | prepare_one_comp_unit (cu, die, language_minimal); |
3019eac3 DE |
6976 | |
6977 | /* We assume that we're processing GCC output. */ | |
6978 | processing_gcc_compilation = 2; | |
6979 | ||
6980 | processing_has_namespace_info = 0; | |
6981 | ||
6982 | start_symtab (name, comp_dir, lowpc); | |
6983 | record_debugformat ("DWARF 2"); | |
6984 | record_producer (cu->producer); | |
6985 | ||
6986 | /* Decode line number information if present. We do this before | |
6987 | processing child DIEs, so that the line header table is available | |
6988 | for DW_AT_decl_file. | |
6989 | We don't need the pc/line-number mapping for type units. */ | |
6990 | handle_DW_AT_stmt_list (die, cu, comp_dir, 0); | |
6991 | ||
6992 | /* Process the dies in the type unit. */ | |
6993 | if (die->child == NULL) | |
6994 | { | |
6995 | dump_die_for_error (die); | |
6996 | error (_("Dwarf Error: Missing children for type unit [in module %s]"), | |
6997 | bfd_get_filename (abfd)); | |
6998 | } | |
6999 | ||
7000 | child_die = die->child; | |
7001 | ||
7002 | while (child_die && child_die->tag) | |
7003 | { | |
7004 | process_die (child_die, cu); | |
7005 | ||
7006 | child_die = sibling_die (child_die); | |
7007 | } | |
7008 | ||
7009 | do_cleanups (back_to); | |
7010 | } | |
7011 | \f | |
7012 | /* DWO files. */ | |
7013 | ||
7014 | static hashval_t | |
7015 | hash_dwo_file (const void *item) | |
7016 | { | |
7017 | const struct dwo_file *dwo_file = item; | |
7018 | ||
7019 | return htab_hash_string (dwo_file->dwo_name); | |
7020 | } | |
7021 | ||
7022 | static int | |
7023 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
7024 | { | |
7025 | const struct dwo_file *lhs = item_lhs; | |
7026 | const struct dwo_file *rhs = item_rhs; | |
7027 | ||
7028 | return strcmp (lhs->dwo_name, rhs->dwo_name) == 0; | |
7029 | } | |
7030 | ||
7031 | /* Allocate a hash table for DWO files. */ | |
7032 | ||
7033 | static htab_t | |
7034 | allocate_dwo_file_hash_table (void) | |
7035 | { | |
7036 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
7037 | ||
7038 | return htab_create_alloc_ex (41, | |
7039 | hash_dwo_file, | |
7040 | eq_dwo_file, | |
7041 | NULL, | |
7042 | &objfile->objfile_obstack, | |
7043 | hashtab_obstack_allocate, | |
7044 | dummy_obstack_deallocate); | |
7045 | } | |
7046 | ||
7047 | static hashval_t | |
7048 | hash_dwo_unit (const void *item) | |
7049 | { | |
7050 | const struct dwo_unit *dwo_unit = item; | |
7051 | ||
7052 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
7053 | return dwo_unit->signature; | |
7054 | } | |
7055 | ||
7056 | static int | |
7057 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
7058 | { | |
7059 | const struct dwo_unit *lhs = item_lhs; | |
7060 | const struct dwo_unit *rhs = item_rhs; | |
7061 | ||
7062 | /* The signature is assumed to be unique within the DWO file. | |
7063 | So while object file CU dwo_id's always have the value zero, | |
7064 | that's OK, assuming each object file DWO file has only one CU, | |
7065 | and that's the rule for now. */ | |
7066 | return lhs->signature == rhs->signature; | |
7067 | } | |
7068 | ||
7069 | /* Allocate a hash table for DWO CUs,TUs. | |
7070 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
7071 | ||
7072 | static htab_t | |
7073 | allocate_dwo_unit_table (struct objfile *objfile) | |
7074 | { | |
7075 | /* Start out with a pretty small number. | |
7076 | Generally DWO files contain only one CU and maybe some TUs. */ | |
7077 | return htab_create_alloc_ex (3, | |
7078 | hash_dwo_unit, | |
7079 | eq_dwo_unit, | |
7080 | NULL, | |
7081 | &objfile->objfile_obstack, | |
7082 | hashtab_obstack_allocate, | |
7083 | dummy_obstack_deallocate); | |
7084 | } | |
7085 | ||
7086 | /* This function is mapped across the sections and remembers the offset and | |
7087 | size of each of the DWO debugging sections we are interested in. */ | |
7088 | ||
7089 | static void | |
7090 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, void *dwo_file_ptr) | |
7091 | { | |
7092 | struct dwo_file *dwo_file = dwo_file_ptr; | |
7093 | const struct dwo_section_names *names = &dwo_section_names; | |
7094 | ||
7095 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
7096 | { | |
7097 | dwo_file->sections.abbrev.asection = sectp; | |
7098 | dwo_file->sections.abbrev.size = bfd_get_section_size (sectp); | |
7099 | } | |
7100 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
7101 | { | |
7102 | dwo_file->sections.info.asection = sectp; | |
7103 | dwo_file->sections.info.size = bfd_get_section_size (sectp); | |
7104 | } | |
7105 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
7106 | { | |
7107 | dwo_file->sections.line.asection = sectp; | |
7108 | dwo_file->sections.line.size = bfd_get_section_size (sectp); | |
7109 | } | |
7110 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
7111 | { | |
7112 | dwo_file->sections.loc.asection = sectp; | |
7113 | dwo_file->sections.loc.size = bfd_get_section_size (sectp); | |
7114 | } | |
09262596 DE |
7115 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) |
7116 | { | |
7117 | dwo_file->sections.macinfo.asection = sectp; | |
7118 | dwo_file->sections.macinfo.size = bfd_get_section_size (sectp); | |
7119 | } | |
7120 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
7121 | { | |
7122 | dwo_file->sections.macro.asection = sectp; | |
7123 | dwo_file->sections.macro.size = bfd_get_section_size (sectp); | |
7124 | } | |
3019eac3 DE |
7125 | else if (section_is_p (sectp->name, &names->str_dwo)) |
7126 | { | |
7127 | dwo_file->sections.str.asection = sectp; | |
7128 | dwo_file->sections.str.size = bfd_get_section_size (sectp); | |
7129 | } | |
7130 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
7131 | { | |
7132 | dwo_file->sections.str_offsets.asection = sectp; | |
7133 | dwo_file->sections.str_offsets.size = bfd_get_section_size (sectp); | |
7134 | } | |
7135 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
7136 | { | |
7137 | struct dwarf2_section_info type_section; | |
7138 | ||
7139 | memset (&type_section, 0, sizeof (type_section)); | |
7140 | type_section.asection = sectp; | |
7141 | type_section.size = bfd_get_section_size (sectp); | |
7142 | VEC_safe_push (dwarf2_section_info_def, dwo_file->sections.types, | |
7143 | &type_section); | |
7144 | } | |
7145 | } | |
7146 | ||
7147 | /* Structure used to pass data to create_debug_info_hash_table_reader. */ | |
7148 | ||
7149 | struct create_dwo_info_table_data | |
7150 | { | |
7151 | struct dwo_file *dwo_file; | |
7152 | htab_t cu_htab; | |
7153 | }; | |
7154 | ||
7155 | /* die_reader_func for create_debug_info_hash_table. */ | |
7156 | ||
7157 | static void | |
7158 | create_debug_info_hash_table_reader (const struct die_reader_specs *reader, | |
7159 | gdb_byte *info_ptr, | |
7160 | struct die_info *comp_unit_die, | |
7161 | int has_children, | |
7162 | void *datap) | |
7163 | { | |
7164 | struct dwarf2_cu *cu = reader->cu; | |
7165 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
7166 | sect_offset offset = cu->per_cu->offset; | |
7167 | struct dwarf2_section_info *section = cu->per_cu->info_or_types_section; | |
7168 | struct create_dwo_info_table_data *data = datap; | |
7169 | struct dwo_file *dwo_file = data->dwo_file; | |
7170 | htab_t cu_htab = data->cu_htab; | |
7171 | void **slot; | |
7172 | struct attribute *attr; | |
7173 | struct dwo_unit *dwo_unit; | |
7174 | ||
7175 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
7176 | if (attr == NULL) | |
7177 | { | |
7178 | error (_("Dwarf Error: debug entry at offset 0x%x is missing" | |
7179 | " its dwo_id [in module %s]"), | |
7180 | offset.sect_off, dwo_file->dwo_name); | |
7181 | return; | |
7182 | } | |
7183 | ||
7184 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
7185 | dwo_unit->dwo_file = dwo_file; | |
7186 | dwo_unit->signature = DW_UNSND (attr); | |
7187 | dwo_unit->info_or_types_section = section; | |
7188 | dwo_unit->offset = offset; | |
7189 | dwo_unit->length = cu->per_cu->length; | |
7190 | ||
7191 | slot = htab_find_slot (cu_htab, dwo_unit, INSERT); | |
7192 | gdb_assert (slot != NULL); | |
7193 | if (*slot != NULL) | |
7194 | { | |
7195 | const struct dwo_unit *dup_dwo_unit = *slot; | |
7196 | ||
7197 | complaint (&symfile_complaints, | |
7198 | _("debug entry at offset 0x%x is duplicate to the entry at" | |
7199 | " offset 0x%x, dwo_id 0x%s [in module %s]"), | |
7200 | offset.sect_off, dup_dwo_unit->offset.sect_off, | |
7201 | phex (dwo_unit->signature, sizeof (dwo_unit->signature)), | |
7202 | dwo_file->dwo_name); | |
7203 | } | |
7204 | else | |
7205 | *slot = dwo_unit; | |
7206 | ||
09406207 | 7207 | if (dwarf2_read_debug) |
3019eac3 DE |
7208 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, dwo_id 0x%s\n", |
7209 | offset.sect_off, | |
7210 | phex (dwo_unit->signature, | |
7211 | sizeof (dwo_unit->signature))); | |
7212 | } | |
7213 | ||
7214 | /* Create a hash table to map DWO IDs to their CU entry in .debug_info.dwo. */ | |
7215 | ||
7216 | static htab_t | |
7217 | create_debug_info_hash_table (struct dwo_file *dwo_file) | |
7218 | { | |
7219 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
7220 | struct dwarf2_section_info *section = &dwo_file->sections.info; | |
7221 | bfd *abfd; | |
7222 | htab_t cu_htab; | |
7223 | gdb_byte *info_ptr, *end_ptr; | |
7224 | struct create_dwo_info_table_data create_dwo_info_table_data; | |
7225 | ||
7226 | dwarf2_read_section (objfile, section); | |
7227 | info_ptr = section->buffer; | |
7228 | ||
7229 | if (info_ptr == NULL) | |
7230 | return NULL; | |
7231 | ||
7232 | /* We can't set abfd until now because the section may be empty or | |
7233 | not present, in which case section->asection will be NULL. */ | |
7234 | abfd = section->asection->owner; | |
7235 | ||
09406207 | 7236 | if (dwarf2_read_debug) |
3019eac3 DE |
7237 | fprintf_unfiltered (gdb_stdlog, "Reading .debug_info.dwo for %s:\n", |
7238 | bfd_get_filename (abfd)); | |
7239 | ||
7240 | cu_htab = allocate_dwo_unit_table (objfile); | |
7241 | ||
7242 | create_dwo_info_table_data.dwo_file = dwo_file; | |
7243 | create_dwo_info_table_data.cu_htab = cu_htab; | |
7244 | ||
7245 | end_ptr = info_ptr + section->size; | |
7246 | while (info_ptr < end_ptr) | |
7247 | { | |
7248 | struct dwarf2_per_cu_data per_cu; | |
7249 | ||
7250 | memset (&per_cu, 0, sizeof (per_cu)); | |
7251 | per_cu.objfile = objfile; | |
7252 | per_cu.is_debug_types = 0; | |
7253 | per_cu.offset.sect_off = info_ptr - section->buffer; | |
7254 | per_cu.info_or_types_section = section; | |
7255 | ||
7256 | init_cutu_and_read_dies_no_follow (&per_cu, | |
7257 | &dwo_file->sections.abbrev, | |
7258 | dwo_file, | |
7259 | create_debug_info_hash_table_reader, | |
7260 | &create_dwo_info_table_data); | |
7261 | ||
7262 | info_ptr += per_cu.length; | |
7263 | } | |
7264 | ||
7265 | return cu_htab; | |
7266 | } | |
7267 | ||
7268 | /* Subroutine of open_dwo_file to simplify it. | |
7269 | Open the file specified by FILE_NAME and hand it off to BFD for | |
7270 | preliminary analysis. Return a newly initialized bfd *, which | |
7271 | includes a canonicalized copy of FILE_NAME. | |
7272 | In case of trouble, return NULL. | |
7273 | NOTE: This function is derived from symfile_bfd_open. */ | |
7274 | ||
7275 | static bfd * | |
7276 | try_open_dwo_file (const char *file_name) | |
7277 | { | |
7278 | bfd *sym_bfd; | |
7279 | int desc; | |
7280 | char *absolute_name; | |
3019eac3 DE |
7281 | |
7282 | desc = openp (debug_file_directory, OPF_TRY_CWD_FIRST, file_name, | |
7283 | O_RDONLY | O_BINARY, &absolute_name); | |
7284 | if (desc < 0) | |
7285 | return NULL; | |
7286 | ||
7287 | sym_bfd = bfd_fopen (absolute_name, gnutarget, FOPEN_RB, desc); | |
7288 | if (!sym_bfd) | |
7289 | { | |
3019eac3 DE |
7290 | xfree (absolute_name); |
7291 | return NULL; | |
7292 | } | |
7293 | bfd_set_cacheable (sym_bfd, 1); | |
7294 | ||
7295 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
7296 | { | |
7297 | bfd_close (sym_bfd); /* This also closes desc. */ | |
7298 | xfree (absolute_name); | |
7299 | return NULL; | |
7300 | } | |
7301 | ||
7302 | /* bfd_usrdata exists for applications and libbfd must not touch it. */ | |
7303 | gdb_assert (bfd_usrdata (sym_bfd) == NULL); | |
7304 | ||
7305 | return sym_bfd; | |
7306 | } | |
7307 | ||
7308 | /* Try to open DWO file DWO_NAME. | |
7309 | COMP_DIR is the DW_AT_comp_dir attribute. | |
7310 | The result is the bfd handle of the file. | |
7311 | If there is a problem finding or opening the file, return NULL. | |
7312 | Upon success, the canonicalized path of the file is stored in the bfd, | |
7313 | same as symfile_bfd_open. */ | |
7314 | ||
7315 | static bfd * | |
7316 | open_dwo_file (const char *dwo_name, const char *comp_dir) | |
7317 | { | |
7318 | bfd *abfd; | |
3019eac3 DE |
7319 | |
7320 | if (IS_ABSOLUTE_PATH (dwo_name)) | |
7321 | return try_open_dwo_file (dwo_name); | |
7322 | ||
7323 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
7324 | ||
7325 | if (comp_dir != NULL) | |
7326 | { | |
7327 | char *path_to_try = concat (comp_dir, SLASH_STRING, dwo_name, NULL); | |
7328 | ||
7329 | /* NOTE: If comp_dir is a relative path, this will also try the | |
7330 | search path, which seems useful. */ | |
7331 | abfd = try_open_dwo_file (path_to_try); | |
7332 | xfree (path_to_try); | |
7333 | if (abfd != NULL) | |
7334 | return abfd; | |
7335 | } | |
7336 | ||
7337 | /* That didn't work, try debug-file-directory, which, despite its name, | |
7338 | is a list of paths. */ | |
7339 | ||
7340 | if (*debug_file_directory == '\0') | |
7341 | return NULL; | |
7342 | ||
7343 | return try_open_dwo_file (dwo_name); | |
7344 | } | |
7345 | ||
7346 | /* Initialize the use of the DWO file specified by DWO_NAME. */ | |
7347 | ||
7348 | static struct dwo_file * | |
7349 | init_dwo_file (const char *dwo_name, const char *comp_dir) | |
7350 | { | |
7351 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
7352 | struct dwo_file *dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7353 | struct dwo_file); | |
7354 | bfd *abfd; | |
7355 | struct cleanup *cleanups; | |
7356 | ||
09406207 | 7357 | if (dwarf2_read_debug) |
3019eac3 DE |
7358 | fprintf_unfiltered (gdb_stdlog, "Reading DWO file %s:\n", dwo_name); |
7359 | ||
7360 | abfd = open_dwo_file (dwo_name, comp_dir); | |
7361 | if (abfd == NULL) | |
7362 | return NULL; | |
7363 | dwo_file->dwo_name = dwo_name; | |
7364 | dwo_file->dwo_bfd = abfd; | |
7365 | ||
7366 | cleanups = make_cleanup (free_dwo_file_cleanup, dwo_file); | |
7367 | ||
7368 | bfd_map_over_sections (abfd, dwarf2_locate_dwo_sections, dwo_file); | |
7369 | ||
7370 | dwo_file->cus = create_debug_info_hash_table (dwo_file); | |
7371 | ||
7372 | dwo_file->tus = create_debug_types_hash_table (dwo_file, | |
7373 | dwo_file->sections.types); | |
7374 | ||
7375 | discard_cleanups (cleanups); | |
7376 | ||
7377 | return dwo_file; | |
7378 | } | |
7379 | ||
7380 | /* Lookup DWO file DWO_NAME. */ | |
7381 | ||
7382 | static struct dwo_file * | |
7383 | lookup_dwo_file (char *dwo_name, const char *comp_dir) | |
7384 | { | |
7385 | struct dwo_file *dwo_file; | |
7386 | struct dwo_file find_entry; | |
7387 | void **slot; | |
7388 | ||
7389 | if (dwarf2_per_objfile->dwo_files == NULL) | |
7390 | dwarf2_per_objfile->dwo_files = allocate_dwo_file_hash_table (); | |
7391 | ||
7392 | /* Have we already seen this DWO file? */ | |
7393 | find_entry.dwo_name = dwo_name; | |
7394 | slot = htab_find_slot (dwarf2_per_objfile->dwo_files, &find_entry, INSERT); | |
7395 | ||
7396 | /* If not, read it in and build a table of the DWOs it contains. */ | |
7397 | if (*slot == NULL) | |
7398 | *slot = init_dwo_file (dwo_name, comp_dir); | |
7399 | ||
7400 | /* NOTE: This will be NULL if unable to open the file. */ | |
7401 | dwo_file = *slot; | |
7402 | ||
7403 | return dwo_file; | |
7404 | } | |
7405 | ||
7406 | /* Lookup the DWO CU referenced from THIS_CU in DWO file DWO_NAME. | |
7407 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. | |
7408 | SIGNATURE is the "dwo_id" of the CU (for consistency we use the same | |
7409 | nomenclature as TUs). | |
1c658ad5 | 7410 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
3019eac3 DE |
7411 | (dwo_id mismatch or couldn't find the DWO file). */ |
7412 | ||
7413 | static struct dwo_unit * | |
7414 | lookup_dwo_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
7415 | char *dwo_name, const char *comp_dir, | |
7416 | ULONGEST signature) | |
7417 | { | |
7418 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
7419 | struct dwo_file *dwo_file; | |
7420 | ||
7421 | dwo_file = lookup_dwo_file (dwo_name, comp_dir); | |
7422 | if (dwo_file == NULL) | |
7423 | return NULL; | |
7424 | ||
7425 | /* Look up the DWO using its signature(dwo_id). */ | |
7426 | ||
7427 | if (dwo_file->cus != NULL) | |
7428 | { | |
7429 | struct dwo_unit find_dwo_cu, *dwo_cu; | |
7430 | ||
7431 | find_dwo_cu.signature = signature; | |
7432 | dwo_cu = htab_find (dwo_file->cus, &find_dwo_cu); | |
a766d390 | 7433 | |
3019eac3 DE |
7434 | if (dwo_cu != NULL) |
7435 | return dwo_cu; | |
7436 | } | |
c906108c | 7437 | |
3019eac3 | 7438 | /* We didn't find it. This must mean a dwo_id mismatch. */ |
df8a16a1 | 7439 | |
3019eac3 DE |
7440 | complaint (&symfile_complaints, |
7441 | _("Could not find DWO CU referenced by CU at offset 0x%x" | |
7442 | " [in module %s]"), | |
7443 | this_cu->offset.sect_off, objfile->name); | |
7444 | return NULL; | |
7445 | } | |
c906108c | 7446 | |
3019eac3 DE |
7447 | /* Lookup the DWO TU referenced from THIS_TU in DWO file DWO_NAME. |
7448 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. | |
1c658ad5 | 7449 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
3019eac3 | 7450 | (dwo_id mismatch or couldn't find the DWO file). */ |
debd256d | 7451 | |
3019eac3 DE |
7452 | static struct dwo_unit * |
7453 | lookup_dwo_type_unit (struct signatured_type *this_tu, | |
7454 | char *dwo_name, const char *comp_dir) | |
7455 | { | |
7456 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
7457 | struct dwo_file *dwo_file; | |
cb1df416 | 7458 | |
3019eac3 DE |
7459 | dwo_file = lookup_dwo_file (dwo_name, comp_dir); |
7460 | if (dwo_file == NULL) | |
7461 | return NULL; | |
cf2c3c16 | 7462 | |
3019eac3 DE |
7463 | /* Look up the DWO using its signature(dwo_id). */ |
7464 | ||
7465 | if (dwo_file->tus != NULL) | |
cf2c3c16 | 7466 | { |
3019eac3 | 7467 | struct dwo_unit find_dwo_tu, *dwo_tu; |
9a619af0 | 7468 | |
3019eac3 DE |
7469 | find_dwo_tu.signature = this_tu->signature; |
7470 | dwo_tu = htab_find (dwo_file->tus, &find_dwo_tu); | |
7471 | ||
7472 | if (dwo_tu != NULL) | |
7473 | return dwo_tu; | |
2e276125 | 7474 | } |
9cdd5dbd | 7475 | |
3019eac3 DE |
7476 | /* We didn't find it. This must mean a dwo_id mismatch. */ |
7477 | ||
7478 | complaint (&symfile_complaints, | |
7479 | _("Could not find DWO TU referenced by TU at offset 0x%x" | |
7480 | " [in module %s]"), | |
7481 | this_tu->per_cu.offset.sect_off, objfile->name); | |
7482 | return NULL; | |
5fb290d7 DJ |
7483 | } |
7484 | ||
3019eac3 DE |
7485 | /* Free all resources associated with DWO_FILE. |
7486 | Close the DWO file and munmap the sections. | |
7487 | All memory should be on the objfile obstack. */ | |
348e048f DE |
7488 | |
7489 | static void | |
3019eac3 | 7490 | free_dwo_file (struct dwo_file *dwo_file, struct objfile *objfile) |
348e048f | 7491 | { |
3019eac3 DE |
7492 | int ix; |
7493 | struct dwarf2_section_info *section; | |
348e048f | 7494 | |
3019eac3 DE |
7495 | gdb_assert (dwo_file->dwo_bfd != objfile->obfd); |
7496 | bfd_close (dwo_file->dwo_bfd); | |
348e048f | 7497 | |
3019eac3 DE |
7498 | munmap_section_buffer (&dwo_file->sections.abbrev); |
7499 | munmap_section_buffer (&dwo_file->sections.info); | |
7500 | munmap_section_buffer (&dwo_file->sections.line); | |
7501 | munmap_section_buffer (&dwo_file->sections.loc); | |
7502 | munmap_section_buffer (&dwo_file->sections.str); | |
7503 | munmap_section_buffer (&dwo_file->sections.str_offsets); | |
348e048f | 7504 | |
3019eac3 DE |
7505 | for (ix = 0; |
7506 | VEC_iterate (dwarf2_section_info_def, dwo_file->sections.types, | |
7507 | ix, section); | |
7508 | ++ix) | |
7509 | munmap_section_buffer (section); | |
348e048f | 7510 | |
3019eac3 DE |
7511 | VEC_free (dwarf2_section_info_def, dwo_file->sections.types); |
7512 | } | |
348e048f | 7513 | |
3019eac3 | 7514 | /* Wrapper for free_dwo_file for use in cleanups. */ |
348e048f | 7515 | |
3019eac3 DE |
7516 | static void |
7517 | free_dwo_file_cleanup (void *arg) | |
7518 | { | |
7519 | struct dwo_file *dwo_file = (struct dwo_file *) arg; | |
7520 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
348e048f | 7521 | |
3019eac3 DE |
7522 | free_dwo_file (dwo_file, objfile); |
7523 | } | |
348e048f | 7524 | |
3019eac3 | 7525 | /* Traversal function for free_dwo_files. */ |
2ab95328 | 7526 | |
3019eac3 DE |
7527 | static int |
7528 | free_dwo_file_from_slot (void **slot, void *info) | |
7529 | { | |
7530 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
7531 | struct objfile *objfile = (struct objfile *) info; | |
348e048f | 7532 | |
3019eac3 | 7533 | free_dwo_file (dwo_file, objfile); |
348e048f | 7534 | |
3019eac3 DE |
7535 | return 1; |
7536 | } | |
348e048f | 7537 | |
3019eac3 | 7538 | /* Free all resources associated with DWO_FILES. */ |
348e048f | 7539 | |
3019eac3 DE |
7540 | static void |
7541 | free_dwo_files (htab_t dwo_files, struct objfile *objfile) | |
7542 | { | |
7543 | htab_traverse_noresize (dwo_files, free_dwo_file_from_slot, objfile); | |
348e048f | 7544 | } |
3019eac3 DE |
7545 | \f |
7546 | /* Read in various DIEs. */ | |
348e048f | 7547 | |
d389af10 JK |
7548 | /* qsort helper for inherit_abstract_dies. */ |
7549 | ||
7550 | static int | |
7551 | unsigned_int_compar (const void *ap, const void *bp) | |
7552 | { | |
7553 | unsigned int a = *(unsigned int *) ap; | |
7554 | unsigned int b = *(unsigned int *) bp; | |
7555 | ||
7556 | return (a > b) - (b > a); | |
7557 | } | |
7558 | ||
7559 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). | |
3e43a32a MS |
7560 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
7561 | already referenced by DW_AT_abstract_origin from the children of the | |
7562 | current DIE. */ | |
d389af10 JK |
7563 | |
7564 | static void | |
7565 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
7566 | { | |
7567 | struct die_info *child_die; | |
7568 | unsigned die_children_count; | |
7569 | /* CU offsets which were referenced by children of the current DIE. */ | |
b64f50a1 JK |
7570 | sect_offset *offsets; |
7571 | sect_offset *offsets_end, *offsetp; | |
d389af10 JK |
7572 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
7573 | struct die_info *origin_die; | |
7574 | /* Iterator of the ORIGIN_DIE children. */ | |
7575 | struct die_info *origin_child_die; | |
7576 | struct cleanup *cleanups; | |
7577 | struct attribute *attr; | |
cd02d79d PA |
7578 | struct dwarf2_cu *origin_cu; |
7579 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
7580 | |
7581 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
7582 | if (!attr) | |
7583 | return; | |
7584 | ||
cd02d79d PA |
7585 | /* Note that following die references may follow to a die in a |
7586 | different cu. */ | |
7587 | ||
7588 | origin_cu = cu; | |
7589 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
7590 | ||
7591 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
7592 | symbols in. */ | |
7593 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
7594 | origin_cu->list_in_scope = cu->list_in_scope; | |
7595 | ||
edb3359d DJ |
7596 | if (die->tag != origin_die->tag |
7597 | && !(die->tag == DW_TAG_inlined_subroutine | |
7598 | && origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
7599 | complaint (&symfile_complaints, |
7600 | _("DIE 0x%x and its abstract origin 0x%x have different tags"), | |
b64f50a1 | 7601 | die->offset.sect_off, origin_die->offset.sect_off); |
d389af10 JK |
7602 | |
7603 | child_die = die->child; | |
7604 | die_children_count = 0; | |
7605 | while (child_die && child_die->tag) | |
7606 | { | |
7607 | child_die = sibling_die (child_die); | |
7608 | die_children_count++; | |
7609 | } | |
7610 | offsets = xmalloc (sizeof (*offsets) * die_children_count); | |
7611 | cleanups = make_cleanup (xfree, offsets); | |
7612 | ||
7613 | offsets_end = offsets; | |
7614 | child_die = die->child; | |
7615 | while (child_die && child_die->tag) | |
7616 | { | |
c38f313d DJ |
7617 | /* For each CHILD_DIE, find the corresponding child of |
7618 | ORIGIN_DIE. If there is more than one layer of | |
7619 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
7620 | but GCC versions at least through 4.4 generate this (GCC PR | |
7621 | 40573). */ | |
7622 | struct die_info *child_origin_die = child_die; | |
cd02d79d | 7623 | struct dwarf2_cu *child_origin_cu = cu; |
9a619af0 | 7624 | |
c38f313d DJ |
7625 | while (1) |
7626 | { | |
cd02d79d PA |
7627 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
7628 | child_origin_cu); | |
c38f313d DJ |
7629 | if (attr == NULL) |
7630 | break; | |
cd02d79d PA |
7631 | child_origin_die = follow_die_ref (child_origin_die, attr, |
7632 | &child_origin_cu); | |
c38f313d DJ |
7633 | } |
7634 | ||
d389af10 JK |
7635 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
7636 | counterpart may exist. */ | |
c38f313d | 7637 | if (child_origin_die != child_die) |
d389af10 | 7638 | { |
edb3359d DJ |
7639 | if (child_die->tag != child_origin_die->tag |
7640 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
7641 | && child_origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
7642 | complaint (&symfile_complaints, |
7643 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
b64f50a1 JK |
7644 | "different tags"), child_die->offset.sect_off, |
7645 | child_origin_die->offset.sect_off); | |
c38f313d DJ |
7646 | if (child_origin_die->parent != origin_die) |
7647 | complaint (&symfile_complaints, | |
7648 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
b64f50a1 JK |
7649 | "different parents"), child_die->offset.sect_off, |
7650 | child_origin_die->offset.sect_off); | |
c38f313d DJ |
7651 | else |
7652 | *offsets_end++ = child_origin_die->offset; | |
d389af10 JK |
7653 | } |
7654 | child_die = sibling_die (child_die); | |
7655 | } | |
7656 | qsort (offsets, offsets_end - offsets, sizeof (*offsets), | |
7657 | unsigned_int_compar); | |
7658 | for (offsetp = offsets + 1; offsetp < offsets_end; offsetp++) | |
b64f50a1 | 7659 | if (offsetp[-1].sect_off == offsetp->sect_off) |
3e43a32a MS |
7660 | complaint (&symfile_complaints, |
7661 | _("Multiple children of DIE 0x%x refer " | |
7662 | "to DIE 0x%x as their abstract origin"), | |
b64f50a1 | 7663 | die->offset.sect_off, offsetp->sect_off); |
d389af10 JK |
7664 | |
7665 | offsetp = offsets; | |
7666 | origin_child_die = origin_die->child; | |
7667 | while (origin_child_die && origin_child_die->tag) | |
7668 | { | |
7669 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 JK |
7670 | while (offsetp < offsets_end |
7671 | && offsetp->sect_off < origin_child_die->offset.sect_off) | |
d389af10 | 7672 | offsetp++; |
b64f50a1 JK |
7673 | if (offsetp >= offsets_end |
7674 | || offsetp->sect_off > origin_child_die->offset.sect_off) | |
d389af10 JK |
7675 | { |
7676 | /* Found that ORIGIN_CHILD_DIE is really not referenced. */ | |
cd02d79d | 7677 | process_die (origin_child_die, origin_cu); |
d389af10 JK |
7678 | } |
7679 | origin_child_die = sibling_die (origin_child_die); | |
7680 | } | |
cd02d79d | 7681 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
d389af10 JK |
7682 | |
7683 | do_cleanups (cleanups); | |
7684 | } | |
7685 | ||
c906108c | 7686 | static void |
e7c27a73 | 7687 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7688 | { |
e7c27a73 | 7689 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 7690 | struct context_stack *new; |
c906108c SS |
7691 | CORE_ADDR lowpc; |
7692 | CORE_ADDR highpc; | |
7693 | struct die_info *child_die; | |
edb3359d | 7694 | struct attribute *attr, *call_line, *call_file; |
c906108c | 7695 | char *name; |
e142c38c | 7696 | CORE_ADDR baseaddr; |
801e3a5b | 7697 | struct block *block; |
edb3359d | 7698 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
34eaf542 TT |
7699 | VEC (symbolp) *template_args = NULL; |
7700 | struct template_symbol *templ_func = NULL; | |
edb3359d DJ |
7701 | |
7702 | if (inlined_func) | |
7703 | { | |
7704 | /* If we do not have call site information, we can't show the | |
7705 | caller of this inlined function. That's too confusing, so | |
7706 | only use the scope for local variables. */ | |
7707 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
7708 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
7709 | if (call_line == NULL || call_file == NULL) | |
7710 | { | |
7711 | read_lexical_block_scope (die, cu); | |
7712 | return; | |
7713 | } | |
7714 | } | |
c906108c | 7715 | |
e142c38c DJ |
7716 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
7717 | ||
94af9270 | 7718 | name = dwarf2_name (die, cu); |
c906108c | 7719 | |
e8d05480 JB |
7720 | /* Ignore functions with missing or empty names. These are actually |
7721 | illegal according to the DWARF standard. */ | |
7722 | if (name == NULL) | |
7723 | { | |
7724 | complaint (&symfile_complaints, | |
b64f50a1 JK |
7725 | _("missing name for subprogram DIE at %d"), |
7726 | die->offset.sect_off); | |
e8d05480 JB |
7727 | return; |
7728 | } | |
7729 | ||
7730 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
7731 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) | |
7732 | { | |
ae4d0c03 PM |
7733 | attr = dwarf2_attr (die, DW_AT_external, cu); |
7734 | if (!attr || !DW_UNSND (attr)) | |
7735 | complaint (&symfile_complaints, | |
3e43a32a MS |
7736 | _("cannot get low and high bounds " |
7737 | "for subprogram DIE at %d"), | |
b64f50a1 | 7738 | die->offset.sect_off); |
e8d05480 JB |
7739 | return; |
7740 | } | |
c906108c SS |
7741 | |
7742 | lowpc += baseaddr; | |
7743 | highpc += baseaddr; | |
7744 | ||
34eaf542 TT |
7745 | /* If we have any template arguments, then we must allocate a |
7746 | different sort of symbol. */ | |
7747 | for (child_die = die->child; child_die; child_die = sibling_die (child_die)) | |
7748 | { | |
7749 | if (child_die->tag == DW_TAG_template_type_param | |
7750 | || child_die->tag == DW_TAG_template_value_param) | |
7751 | { | |
7752 | templ_func = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7753 | struct template_symbol); | |
7754 | templ_func->base.is_cplus_template_function = 1; | |
7755 | break; | |
7756 | } | |
7757 | } | |
7758 | ||
c906108c | 7759 | new = push_context (0, lowpc); |
34eaf542 TT |
7760 | new->name = new_symbol_full (die, read_type_die (die, cu), cu, |
7761 | (struct symbol *) templ_func); | |
4c2df51b | 7762 | |
4cecd739 DJ |
7763 | /* If there is a location expression for DW_AT_frame_base, record |
7764 | it. */ | |
e142c38c | 7765 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 7766 | if (attr) |
c034e007 AC |
7767 | /* FIXME: cagney/2004-01-26: The DW_AT_frame_base's location |
7768 | expression is being recorded directly in the function's symbol | |
7769 | and not in a separate frame-base object. I guess this hack is | |
7770 | to avoid adding some sort of frame-base adjunct/annex to the | |
7771 | function's symbol :-(. The problem with doing this is that it | |
7772 | results in a function symbol with a location expression that | |
7773 | has nothing to do with the location of the function, ouch! The | |
7774 | relationship should be: a function's symbol has-a frame base; a | |
7775 | frame-base has-a location expression. */ | |
e7c27a73 | 7776 | dwarf2_symbol_mark_computed (attr, new->name, cu); |
4c2df51b | 7777 | |
e142c38c | 7778 | cu->list_in_scope = &local_symbols; |
c906108c | 7779 | |
639d11d3 | 7780 | if (die->child != NULL) |
c906108c | 7781 | { |
639d11d3 | 7782 | child_die = die->child; |
c906108c SS |
7783 | while (child_die && child_die->tag) |
7784 | { | |
34eaf542 TT |
7785 | if (child_die->tag == DW_TAG_template_type_param |
7786 | || child_die->tag == DW_TAG_template_value_param) | |
7787 | { | |
7788 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
7789 | ||
f1078f66 DJ |
7790 | if (arg != NULL) |
7791 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
7792 | } |
7793 | else | |
7794 | process_die (child_die, cu); | |
c906108c SS |
7795 | child_die = sibling_die (child_die); |
7796 | } | |
7797 | } | |
7798 | ||
d389af10 JK |
7799 | inherit_abstract_dies (die, cu); |
7800 | ||
4a811a97 UW |
7801 | /* If we have a DW_AT_specification, we might need to import using |
7802 | directives from the context of the specification DIE. See the | |
7803 | comment in determine_prefix. */ | |
7804 | if (cu->language == language_cplus | |
7805 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
7806 | { | |
7807 | struct dwarf2_cu *spec_cu = cu; | |
7808 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
7809 | ||
7810 | while (spec_die) | |
7811 | { | |
7812 | child_die = spec_die->child; | |
7813 | while (child_die && child_die->tag) | |
7814 | { | |
7815 | if (child_die->tag == DW_TAG_imported_module) | |
7816 | process_die (child_die, spec_cu); | |
7817 | child_die = sibling_die (child_die); | |
7818 | } | |
7819 | ||
7820 | /* In some cases, GCC generates specification DIEs that | |
7821 | themselves contain DW_AT_specification attributes. */ | |
7822 | spec_die = die_specification (spec_die, &spec_cu); | |
7823 | } | |
7824 | } | |
7825 | ||
c906108c SS |
7826 | new = pop_context (); |
7827 | /* Make a block for the local symbols within. */ | |
801e3a5b JB |
7828 | block = finish_block (new->name, &local_symbols, new->old_blocks, |
7829 | lowpc, highpc, objfile); | |
7830 | ||
df8a16a1 | 7831 | /* For C++, set the block's scope. */ |
f55ee35c | 7832 | if (cu->language == language_cplus || cu->language == language_fortran) |
df8a16a1 | 7833 | cp_set_block_scope (new->name, block, &objfile->objfile_obstack, |
0114d602 | 7834 | determine_prefix (die, cu), |
df8a16a1 DJ |
7835 | processing_has_namespace_info); |
7836 | ||
801e3a5b JB |
7837 | /* If we have address ranges, record them. */ |
7838 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 7839 | |
34eaf542 TT |
7840 | /* Attach template arguments to function. */ |
7841 | if (! VEC_empty (symbolp, template_args)) | |
7842 | { | |
7843 | gdb_assert (templ_func != NULL); | |
7844 | ||
7845 | templ_func->n_template_arguments = VEC_length (symbolp, template_args); | |
7846 | templ_func->template_arguments | |
7847 | = obstack_alloc (&objfile->objfile_obstack, | |
7848 | (templ_func->n_template_arguments | |
7849 | * sizeof (struct symbol *))); | |
7850 | memcpy (templ_func->template_arguments, | |
7851 | VEC_address (symbolp, template_args), | |
7852 | (templ_func->n_template_arguments * sizeof (struct symbol *))); | |
7853 | VEC_free (symbolp, template_args); | |
7854 | } | |
7855 | ||
208d8187 JB |
7856 | /* In C++, we can have functions nested inside functions (e.g., when |
7857 | a function declares a class that has methods). This means that | |
7858 | when we finish processing a function scope, we may need to go | |
7859 | back to building a containing block's symbol lists. */ | |
7860 | local_symbols = new->locals; | |
7861 | param_symbols = new->params; | |
27aa8d6a | 7862 | using_directives = new->using_directives; |
208d8187 | 7863 | |
921e78cf JB |
7864 | /* If we've finished processing a top-level function, subsequent |
7865 | symbols go in the file symbol list. */ | |
7866 | if (outermost_context_p ()) | |
e142c38c | 7867 | cu->list_in_scope = &file_symbols; |
c906108c SS |
7868 | } |
7869 | ||
7870 | /* Process all the DIES contained within a lexical block scope. Start | |
7871 | a new scope, process the dies, and then close the scope. */ | |
7872 | ||
7873 | static void | |
e7c27a73 | 7874 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7875 | { |
e7c27a73 | 7876 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 7877 | struct context_stack *new; |
c906108c SS |
7878 | CORE_ADDR lowpc, highpc; |
7879 | struct die_info *child_die; | |
e142c38c DJ |
7880 | CORE_ADDR baseaddr; |
7881 | ||
7882 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
7883 | |
7884 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
7885 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
7886 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 7887 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 7888 | describe ranges. */ |
d85a05f0 | 7889 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
c906108c SS |
7890 | return; |
7891 | lowpc += baseaddr; | |
7892 | highpc += baseaddr; | |
7893 | ||
7894 | push_context (0, lowpc); | |
639d11d3 | 7895 | if (die->child != NULL) |
c906108c | 7896 | { |
639d11d3 | 7897 | child_die = die->child; |
c906108c SS |
7898 | while (child_die && child_die->tag) |
7899 | { | |
e7c27a73 | 7900 | process_die (child_die, cu); |
c906108c SS |
7901 | child_die = sibling_die (child_die); |
7902 | } | |
7903 | } | |
7904 | new = pop_context (); | |
7905 | ||
8540c487 | 7906 | if (local_symbols != NULL || using_directives != NULL) |
c906108c | 7907 | { |
801e3a5b JB |
7908 | struct block *block |
7909 | = finish_block (0, &local_symbols, new->old_blocks, new->start_addr, | |
7910 | highpc, objfile); | |
7911 | ||
7912 | /* Note that recording ranges after traversing children, as we | |
7913 | do here, means that recording a parent's ranges entails | |
7914 | walking across all its children's ranges as they appear in | |
7915 | the address map, which is quadratic behavior. | |
7916 | ||
7917 | It would be nicer to record the parent's ranges before | |
7918 | traversing its children, simply overriding whatever you find | |
7919 | there. But since we don't even decide whether to create a | |
7920 | block until after we've traversed its children, that's hard | |
7921 | to do. */ | |
7922 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c SS |
7923 | } |
7924 | local_symbols = new->locals; | |
27aa8d6a | 7925 | using_directives = new->using_directives; |
c906108c SS |
7926 | } |
7927 | ||
96408a79 SA |
7928 | /* Read in DW_TAG_GNU_call_site and insert it to CU->call_site_htab. */ |
7929 | ||
7930 | static void | |
7931 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
7932 | { | |
7933 | struct objfile *objfile = cu->objfile; | |
7934 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
7935 | CORE_ADDR pc, baseaddr; | |
7936 | struct attribute *attr; | |
7937 | struct call_site *call_site, call_site_local; | |
7938 | void **slot; | |
7939 | int nparams; | |
7940 | struct die_info *child_die; | |
7941 | ||
7942 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
7943 | ||
7944 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
7945 | if (!attr) | |
7946 | { | |
7947 | complaint (&symfile_complaints, | |
7948 | _("missing DW_AT_low_pc for DW_TAG_GNU_call_site " | |
7949 | "DIE 0x%x [in module %s]"), | |
b64f50a1 | 7950 | die->offset.sect_off, objfile->name); |
96408a79 SA |
7951 | return; |
7952 | } | |
7953 | pc = DW_ADDR (attr) + baseaddr; | |
7954 | ||
7955 | if (cu->call_site_htab == NULL) | |
7956 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
7957 | NULL, &objfile->objfile_obstack, | |
7958 | hashtab_obstack_allocate, NULL); | |
7959 | call_site_local.pc = pc; | |
7960 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
7961 | if (*slot != NULL) | |
7962 | { | |
7963 | complaint (&symfile_complaints, | |
7964 | _("Duplicate PC %s for DW_TAG_GNU_call_site " | |
7965 | "DIE 0x%x [in module %s]"), | |
b64f50a1 | 7966 | paddress (gdbarch, pc), die->offset.sect_off, objfile->name); |
96408a79 SA |
7967 | return; |
7968 | } | |
7969 | ||
7970 | /* Count parameters at the caller. */ | |
7971 | ||
7972 | nparams = 0; | |
7973 | for (child_die = die->child; child_die && child_die->tag; | |
7974 | child_die = sibling_die (child_die)) | |
7975 | { | |
7976 | if (child_die->tag != DW_TAG_GNU_call_site_parameter) | |
7977 | { | |
7978 | complaint (&symfile_complaints, | |
7979 | _("Tag %d is not DW_TAG_GNU_call_site_parameter in " | |
7980 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
b64f50a1 | 7981 | child_die->tag, child_die->offset.sect_off, objfile->name); |
96408a79 SA |
7982 | continue; |
7983 | } | |
7984 | ||
7985 | nparams++; | |
7986 | } | |
7987 | ||
7988 | call_site = obstack_alloc (&objfile->objfile_obstack, | |
7989 | (sizeof (*call_site) | |
7990 | + (sizeof (*call_site->parameter) | |
7991 | * (nparams - 1)))); | |
7992 | *slot = call_site; | |
7993 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
7994 | call_site->pc = pc; | |
7995 | ||
7996 | if (dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
7997 | { | |
7998 | struct die_info *func_die; | |
7999 | ||
8000 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
8001 | for (func_die = die->parent; | |
8002 | func_die && func_die->tag != DW_TAG_subprogram | |
8003 | && func_die->tag != DW_TAG_subroutine_type; | |
8004 | func_die = func_die->parent); | |
8005 | ||
8006 | /* DW_AT_GNU_all_call_sites is a superset | |
8007 | of DW_AT_GNU_all_tail_call_sites. */ | |
8008 | if (func_die | |
8009 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) | |
8010 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) | |
8011 | { | |
8012 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
8013 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
8014 | both the initial caller containing the real return address PC and | |
8015 | the final callee containing the current PC of a chain of tail | |
8016 | calls do not need to have the tail call list complete. But any | |
8017 | function candidate for a virtual tail call frame searched via | |
8018 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
8019 | determined unambiguously. */ | |
8020 | } | |
8021 | else | |
8022 | { | |
8023 | struct type *func_type = NULL; | |
8024 | ||
8025 | if (func_die) | |
8026 | func_type = get_die_type (func_die, cu); | |
8027 | if (func_type != NULL) | |
8028 | { | |
8029 | gdb_assert (TYPE_CODE (func_type) == TYPE_CODE_FUNC); | |
8030 | ||
8031 | /* Enlist this call site to the function. */ | |
8032 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
8033 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
8034 | } | |
8035 | else | |
8036 | complaint (&symfile_complaints, | |
8037 | _("Cannot find function owning DW_TAG_GNU_call_site " | |
8038 | "DIE 0x%x [in module %s]"), | |
b64f50a1 | 8039 | die->offset.sect_off, objfile->name); |
96408a79 SA |
8040 | } |
8041 | } | |
8042 | ||
8043 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
8044 | if (attr == NULL) | |
8045 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
8046 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); | |
8047 | if (!attr || (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0)) | |
8048 | /* Keep NULL DWARF_BLOCK. */; | |
8049 | else if (attr_form_is_block (attr)) | |
8050 | { | |
8051 | struct dwarf2_locexpr_baton *dlbaton; | |
8052 | ||
8053 | dlbaton = obstack_alloc (&objfile->objfile_obstack, sizeof (*dlbaton)); | |
8054 | dlbaton->data = DW_BLOCK (attr)->data; | |
8055 | dlbaton->size = DW_BLOCK (attr)->size; | |
8056 | dlbaton->per_cu = cu->per_cu; | |
8057 | ||
8058 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
8059 | } | |
8060 | else if (is_ref_attr (attr)) | |
8061 | { | |
96408a79 SA |
8062 | struct dwarf2_cu *target_cu = cu; |
8063 | struct die_info *target_die; | |
8064 | ||
8065 | target_die = follow_die_ref_or_sig (die, attr, &target_cu); | |
8066 | gdb_assert (target_cu->objfile == objfile); | |
8067 | if (die_is_declaration (target_die, target_cu)) | |
8068 | { | |
8069 | const char *target_physname; | |
8070 | ||
8071 | target_physname = dwarf2_physname (NULL, target_die, target_cu); | |
8072 | if (target_physname == NULL) | |
8073 | complaint (&symfile_complaints, | |
8074 | _("DW_AT_GNU_call_site_target target DIE has invalid " | |
8075 | "physname, for referencing DIE 0x%x [in module %s]"), | |
b64f50a1 | 8076 | die->offset.sect_off, objfile->name); |
96408a79 SA |
8077 | else |
8078 | SET_FIELD_PHYSNAME (call_site->target, (char *) target_physname); | |
8079 | } | |
8080 | else | |
8081 | { | |
8082 | CORE_ADDR lowpc; | |
8083 | ||
8084 | /* DW_AT_entry_pc should be preferred. */ | |
8085 | if (!dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL)) | |
8086 | complaint (&symfile_complaints, | |
8087 | _("DW_AT_GNU_call_site_target target DIE has invalid " | |
8088 | "low pc, for referencing DIE 0x%x [in module %s]"), | |
b64f50a1 | 8089 | die->offset.sect_off, objfile->name); |
96408a79 SA |
8090 | else |
8091 | SET_FIELD_PHYSADDR (call_site->target, lowpc + baseaddr); | |
8092 | } | |
8093 | } | |
8094 | else | |
8095 | complaint (&symfile_complaints, | |
8096 | _("DW_TAG_GNU_call_site DW_AT_GNU_call_site_target is neither " | |
8097 | "block nor reference, for DIE 0x%x [in module %s]"), | |
b64f50a1 | 8098 | die->offset.sect_off, objfile->name); |
96408a79 SA |
8099 | |
8100 | call_site->per_cu = cu->per_cu; | |
8101 | ||
8102 | for (child_die = die->child; | |
8103 | child_die && child_die->tag; | |
8104 | child_die = sibling_die (child_die)) | |
8105 | { | |
96408a79 | 8106 | struct call_site_parameter *parameter; |
1788b2d3 | 8107 | struct attribute *loc, *origin; |
96408a79 SA |
8108 | |
8109 | if (child_die->tag != DW_TAG_GNU_call_site_parameter) | |
8110 | { | |
8111 | /* Already printed the complaint above. */ | |
8112 | continue; | |
8113 | } | |
8114 | ||
8115 | gdb_assert (call_site->parameter_count < nparams); | |
8116 | parameter = &call_site->parameter[call_site->parameter_count]; | |
8117 | ||
1788b2d3 JK |
8118 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
8119 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
8120 | register is contained in DW_AT_GNU_call_site_value. */ | |
96408a79 | 8121 | |
24c5c679 | 8122 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
1788b2d3 JK |
8123 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); |
8124 | if (loc == NULL && origin != NULL && is_ref_attr (origin)) | |
8125 | { | |
8126 | sect_offset offset; | |
8127 | ||
8128 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; | |
8129 | offset = dwarf2_get_ref_die_offset (origin); | |
8130 | gdb_assert (offset.sect_off >= cu->header.offset.sect_off); | |
8131 | parameter->u.param_offset.cu_off = (offset.sect_off | |
8132 | - cu->header.offset.sect_off); | |
8133 | } | |
8134 | else if (loc == NULL || origin != NULL || !attr_form_is_block (loc)) | |
96408a79 SA |
8135 | { |
8136 | complaint (&symfile_complaints, | |
8137 | _("No DW_FORM_block* DW_AT_location for " | |
8138 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
b64f50a1 | 8139 | child_die->offset.sect_off, objfile->name); |
96408a79 SA |
8140 | continue; |
8141 | } | |
24c5c679 | 8142 | else |
96408a79 | 8143 | { |
24c5c679 JK |
8144 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
8145 | (DW_BLOCK (loc)->data, &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size]); | |
8146 | if (parameter->u.dwarf_reg != -1) | |
8147 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
8148 | else if (dwarf_block_to_sp_offset (gdbarch, DW_BLOCK (loc)->data, | |
8149 | &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size], | |
8150 | ¶meter->u.fb_offset)) | |
8151 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
8152 | else | |
8153 | { | |
8154 | complaint (&symfile_complaints, | |
8155 | _("Only single DW_OP_reg or DW_OP_fbreg is supported " | |
8156 | "for DW_FORM_block* DW_AT_location is supported for " | |
8157 | "DW_TAG_GNU_call_site child DIE 0x%x " | |
8158 | "[in module %s]"), | |
8159 | child_die->offset.sect_off, objfile->name); | |
8160 | continue; | |
8161 | } | |
96408a79 SA |
8162 | } |
8163 | ||
8164 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
8165 | if (!attr_form_is_block (attr)) | |
8166 | { | |
8167 | complaint (&symfile_complaints, | |
8168 | _("No DW_FORM_block* DW_AT_GNU_call_site_value for " | |
8169 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
b64f50a1 | 8170 | child_die->offset.sect_off, objfile->name); |
96408a79 SA |
8171 | continue; |
8172 | } | |
8173 | parameter->value = DW_BLOCK (attr)->data; | |
8174 | parameter->value_size = DW_BLOCK (attr)->size; | |
8175 | ||
8176 | /* Parameters are not pre-cleared by memset above. */ | |
8177 | parameter->data_value = NULL; | |
8178 | parameter->data_value_size = 0; | |
8179 | call_site->parameter_count++; | |
8180 | ||
8181 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
8182 | if (attr) | |
8183 | { | |
8184 | if (!attr_form_is_block (attr)) | |
8185 | complaint (&symfile_complaints, | |
8186 | _("No DW_FORM_block* DW_AT_GNU_call_site_data_value for " | |
8187 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
b64f50a1 | 8188 | child_die->offset.sect_off, objfile->name); |
96408a79 SA |
8189 | else |
8190 | { | |
8191 | parameter->data_value = DW_BLOCK (attr)->data; | |
8192 | parameter->data_value_size = DW_BLOCK (attr)->size; | |
8193 | } | |
8194 | } | |
8195 | } | |
8196 | } | |
8197 | ||
43039443 | 8198 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. |
ff013f42 JK |
8199 | Return 1 if the attributes are present and valid, otherwise, return 0. |
8200 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
43039443 JK |
8201 | |
8202 | static int | |
8203 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
ff013f42 JK |
8204 | CORE_ADDR *high_return, struct dwarf2_cu *cu, |
8205 | struct partial_symtab *ranges_pst) | |
43039443 JK |
8206 | { |
8207 | struct objfile *objfile = cu->objfile; | |
8208 | struct comp_unit_head *cu_header = &cu->header; | |
8209 | bfd *obfd = objfile->obfd; | |
8210 | unsigned int addr_size = cu_header->addr_size; | |
8211 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
8212 | /* Base address selection entry. */ | |
8213 | CORE_ADDR base; | |
8214 | int found_base; | |
8215 | unsigned int dummy; | |
8216 | gdb_byte *buffer; | |
8217 | CORE_ADDR marker; | |
8218 | int low_set; | |
8219 | CORE_ADDR low = 0; | |
8220 | CORE_ADDR high = 0; | |
ff013f42 | 8221 | CORE_ADDR baseaddr; |
43039443 | 8222 | |
d00adf39 DE |
8223 | found_base = cu->base_known; |
8224 | base = cu->base_address; | |
43039443 | 8225 | |
be391dca | 8226 | dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges); |
dce234bc | 8227 | if (offset >= dwarf2_per_objfile->ranges.size) |
43039443 JK |
8228 | { |
8229 | complaint (&symfile_complaints, | |
8230 | _("Offset %d out of bounds for DW_AT_ranges attribute"), | |
8231 | offset); | |
8232 | return 0; | |
8233 | } | |
dce234bc | 8234 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
43039443 JK |
8235 | |
8236 | /* Read in the largest possible address. */ | |
8237 | marker = read_address (obfd, buffer, cu, &dummy); | |
8238 | if ((marker & mask) == mask) | |
8239 | { | |
8240 | /* If we found the largest possible address, then | |
8241 | read the base address. */ | |
8242 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
8243 | buffer += 2 * addr_size; | |
8244 | offset += 2 * addr_size; | |
8245 | found_base = 1; | |
8246 | } | |
8247 | ||
8248 | low_set = 0; | |
8249 | ||
e7030f15 | 8250 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
ff013f42 | 8251 | |
43039443 JK |
8252 | while (1) |
8253 | { | |
8254 | CORE_ADDR range_beginning, range_end; | |
8255 | ||
8256 | range_beginning = read_address (obfd, buffer, cu, &dummy); | |
8257 | buffer += addr_size; | |
8258 | range_end = read_address (obfd, buffer, cu, &dummy); | |
8259 | buffer += addr_size; | |
8260 | offset += 2 * addr_size; | |
8261 | ||
8262 | /* An end of list marker is a pair of zero addresses. */ | |
8263 | if (range_beginning == 0 && range_end == 0) | |
8264 | /* Found the end of list entry. */ | |
8265 | break; | |
8266 | ||
8267 | /* Each base address selection entry is a pair of 2 values. | |
8268 | The first is the largest possible address, the second is | |
8269 | the base address. Check for a base address here. */ | |
8270 | if ((range_beginning & mask) == mask) | |
8271 | { | |
8272 | /* If we found the largest possible address, then | |
8273 | read the base address. */ | |
8274 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
8275 | found_base = 1; | |
8276 | continue; | |
8277 | } | |
8278 | ||
8279 | if (!found_base) | |
8280 | { | |
8281 | /* We have no valid base address for the ranges | |
8282 | data. */ | |
8283 | complaint (&symfile_complaints, | |
8284 | _("Invalid .debug_ranges data (no base address)")); | |
8285 | return 0; | |
8286 | } | |
8287 | ||
9277c30c UW |
8288 | if (range_beginning > range_end) |
8289 | { | |
8290 | /* Inverted range entries are invalid. */ | |
8291 | complaint (&symfile_complaints, | |
8292 | _("Invalid .debug_ranges data (inverted range)")); | |
8293 | return 0; | |
8294 | } | |
8295 | ||
8296 | /* Empty range entries have no effect. */ | |
8297 | if (range_beginning == range_end) | |
8298 | continue; | |
8299 | ||
43039443 JK |
8300 | range_beginning += base; |
8301 | range_end += base; | |
8302 | ||
9277c30c | 8303 | if (ranges_pst != NULL) |
ff013f42 | 8304 | addrmap_set_empty (objfile->psymtabs_addrmap, |
3e43a32a MS |
8305 | range_beginning + baseaddr, |
8306 | range_end - 1 + baseaddr, | |
ff013f42 JK |
8307 | ranges_pst); |
8308 | ||
43039443 JK |
8309 | /* FIXME: This is recording everything as a low-high |
8310 | segment of consecutive addresses. We should have a | |
8311 | data structure for discontiguous block ranges | |
8312 | instead. */ | |
8313 | if (! low_set) | |
8314 | { | |
8315 | low = range_beginning; | |
8316 | high = range_end; | |
8317 | low_set = 1; | |
8318 | } | |
8319 | else | |
8320 | { | |
8321 | if (range_beginning < low) | |
8322 | low = range_beginning; | |
8323 | if (range_end > high) | |
8324 | high = range_end; | |
8325 | } | |
8326 | } | |
8327 | ||
8328 | if (! low_set) | |
8329 | /* If the first entry is an end-of-list marker, the range | |
8330 | describes an empty scope, i.e. no instructions. */ | |
8331 | return 0; | |
8332 | ||
8333 | if (low_return) | |
8334 | *low_return = low; | |
8335 | if (high_return) | |
8336 | *high_return = high; | |
8337 | return 1; | |
8338 | } | |
8339 | ||
af34e669 DJ |
8340 | /* Get low and high pc attributes from a die. Return 1 if the attributes |
8341 | are present and valid, otherwise, return 0. Return -1 if the range is | |
8342 | discontinuous, i.e. derived from DW_AT_ranges information. */ | |
380bca97 | 8343 | |
c906108c | 8344 | static int |
af34e669 | 8345 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 DJ |
8346 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
8347 | struct partial_symtab *pst) | |
c906108c SS |
8348 | { |
8349 | struct attribute *attr; | |
91da1414 | 8350 | struct attribute *attr_high; |
af34e669 DJ |
8351 | CORE_ADDR low = 0; |
8352 | CORE_ADDR high = 0; | |
8353 | int ret = 0; | |
c906108c | 8354 | |
91da1414 MW |
8355 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
8356 | if (attr_high) | |
af34e669 | 8357 | { |
e142c38c | 8358 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 | 8359 | if (attr) |
91da1414 MW |
8360 | { |
8361 | low = DW_ADDR (attr); | |
3019eac3 DE |
8362 | if (attr_high->form == DW_FORM_addr |
8363 | || attr_high->form == DW_FORM_GNU_addr_index) | |
91da1414 MW |
8364 | high = DW_ADDR (attr_high); |
8365 | else | |
8366 | high = low + DW_UNSND (attr_high); | |
8367 | } | |
af34e669 DJ |
8368 | else |
8369 | /* Found high w/o low attribute. */ | |
8370 | return 0; | |
8371 | ||
8372 | /* Found consecutive range of addresses. */ | |
8373 | ret = 1; | |
8374 | } | |
c906108c | 8375 | else |
af34e669 | 8376 | { |
e142c38c | 8377 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
8378 | if (attr != NULL) |
8379 | { | |
2e3cf129 DE |
8380 | unsigned int ranges_offset = DW_UNSND (attr) + cu->ranges_base; |
8381 | ||
af34e669 | 8382 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 8383 | .debug_ranges section. */ |
2e3cf129 | 8384 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst)) |
af34e669 | 8385 | return 0; |
43039443 | 8386 | /* Found discontinuous range of addresses. */ |
af34e669 DJ |
8387 | ret = -1; |
8388 | } | |
8389 | } | |
c906108c | 8390 | |
9373cf26 JK |
8391 | /* read_partial_die has also the strict LOW < HIGH requirement. */ |
8392 | if (high <= low) | |
c906108c SS |
8393 | return 0; |
8394 | ||
8395 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
8396 | eliminate duplicate copies of functions and vtables and such. | |
8397 | The linker will arbitrarily choose one and discard the others. | |
8398 | The AT_*_pc values for such functions refer to local labels in | |
8399 | these sections. If the section from that file was discarded, the | |
8400 | labels are not in the output, so the relocs get a value of 0. | |
8401 | If this is a discarded function, mark the pc bounds as invalid, | |
8402 | so that GDB will ignore it. */ | |
72dca2f5 | 8403 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
c906108c SS |
8404 | return 0; |
8405 | ||
8406 | *lowpc = low; | |
96408a79 SA |
8407 | if (highpc) |
8408 | *highpc = high; | |
af34e669 | 8409 | return ret; |
c906108c SS |
8410 | } |
8411 | ||
b084d499 JB |
8412 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
8413 | its low and high PC addresses. Do nothing if these addresses could not | |
8414 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
8415 | and HIGHPC to the high address if greater than HIGHPC. */ | |
8416 | ||
8417 | static void | |
8418 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
8419 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
8420 | struct dwarf2_cu *cu) | |
8421 | { | |
8422 | CORE_ADDR low, high; | |
8423 | struct die_info *child = die->child; | |
8424 | ||
d85a05f0 | 8425 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL)) |
b084d499 JB |
8426 | { |
8427 | *lowpc = min (*lowpc, low); | |
8428 | *highpc = max (*highpc, high); | |
8429 | } | |
8430 | ||
8431 | /* If the language does not allow nested subprograms (either inside | |
8432 | subprograms or lexical blocks), we're done. */ | |
8433 | if (cu->language != language_ada) | |
8434 | return; | |
6e70227d | 8435 | |
b084d499 JB |
8436 | /* Check all the children of the given DIE. If it contains nested |
8437 | subprograms, then check their pc bounds. Likewise, we need to | |
8438 | check lexical blocks as well, as they may also contain subprogram | |
8439 | definitions. */ | |
8440 | while (child && child->tag) | |
8441 | { | |
8442 | if (child->tag == DW_TAG_subprogram | |
8443 | || child->tag == DW_TAG_lexical_block) | |
8444 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
8445 | child = sibling_die (child); | |
8446 | } | |
8447 | } | |
8448 | ||
fae299cd DC |
8449 | /* Get the low and high pc's represented by the scope DIE, and store |
8450 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
8451 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
8452 | ||
8453 | static void | |
8454 | get_scope_pc_bounds (struct die_info *die, | |
8455 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
8456 | struct dwarf2_cu *cu) | |
8457 | { | |
8458 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
8459 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
8460 | CORE_ADDR current_low, current_high; | |
8461 | ||
d85a05f0 | 8462 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL)) |
fae299cd DC |
8463 | { |
8464 | best_low = current_low; | |
8465 | best_high = current_high; | |
8466 | } | |
8467 | else | |
8468 | { | |
8469 | struct die_info *child = die->child; | |
8470 | ||
8471 | while (child && child->tag) | |
8472 | { | |
8473 | switch (child->tag) { | |
8474 | case DW_TAG_subprogram: | |
b084d499 | 8475 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
8476 | break; |
8477 | case DW_TAG_namespace: | |
f55ee35c | 8478 | case DW_TAG_module: |
fae299cd DC |
8479 | /* FIXME: carlton/2004-01-16: Should we do this for |
8480 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
8481 | that current GCC's always emit the DIEs corresponding | |
8482 | to definitions of methods of classes as children of a | |
8483 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
8484 | the DIEs giving the declarations, which could be | |
8485 | anywhere). But I don't see any reason why the | |
8486 | standards says that they have to be there. */ | |
8487 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
8488 | ||
8489 | if (current_low != ((CORE_ADDR) -1)) | |
8490 | { | |
8491 | best_low = min (best_low, current_low); | |
8492 | best_high = max (best_high, current_high); | |
8493 | } | |
8494 | break; | |
8495 | default: | |
0963b4bd | 8496 | /* Ignore. */ |
fae299cd DC |
8497 | break; |
8498 | } | |
8499 | ||
8500 | child = sibling_die (child); | |
8501 | } | |
8502 | } | |
8503 | ||
8504 | *lowpc = best_low; | |
8505 | *highpc = best_high; | |
8506 | } | |
8507 | ||
801e3a5b JB |
8508 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
8509 | in DIE. */ | |
380bca97 | 8510 | |
801e3a5b JB |
8511 | static void |
8512 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
8513 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
8514 | { | |
bb5ed363 | 8515 | struct objfile *objfile = cu->objfile; |
801e3a5b | 8516 | struct attribute *attr; |
91da1414 | 8517 | struct attribute *attr_high; |
801e3a5b | 8518 | |
91da1414 MW |
8519 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
8520 | if (attr_high) | |
801e3a5b | 8521 | { |
801e3a5b JB |
8522 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
8523 | if (attr) | |
8524 | { | |
8525 | CORE_ADDR low = DW_ADDR (attr); | |
91da1414 | 8526 | CORE_ADDR high; |
3019eac3 DE |
8527 | if (attr_high->form == DW_FORM_addr |
8528 | || attr_high->form == DW_FORM_GNU_addr_index) | |
91da1414 MW |
8529 | high = DW_ADDR (attr_high); |
8530 | else | |
8531 | high = low + DW_UNSND (attr_high); | |
9a619af0 | 8532 | |
801e3a5b JB |
8533 | record_block_range (block, baseaddr + low, baseaddr + high - 1); |
8534 | } | |
8535 | } | |
8536 | ||
8537 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
8538 | if (attr) | |
8539 | { | |
bb5ed363 | 8540 | bfd *obfd = objfile->obfd; |
801e3a5b JB |
8541 | |
8542 | /* The value of the DW_AT_ranges attribute is the offset of the | |
8543 | address range list in the .debug_ranges section. */ | |
2e3cf129 | 8544 | unsigned long offset = DW_UNSND (attr) + cu->ranges_base; |
dce234bc | 8545 | gdb_byte *buffer = dwarf2_per_objfile->ranges.buffer + offset; |
801e3a5b JB |
8546 | |
8547 | /* For some target architectures, but not others, the | |
8548 | read_address function sign-extends the addresses it returns. | |
8549 | To recognize base address selection entries, we need a | |
8550 | mask. */ | |
8551 | unsigned int addr_size = cu->header.addr_size; | |
8552 | CORE_ADDR base_select_mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
8553 | ||
8554 | /* The base address, to which the next pair is relative. Note | |
8555 | that this 'base' is a DWARF concept: most entries in a range | |
8556 | list are relative, to reduce the number of relocs against the | |
8557 | debugging information. This is separate from this function's | |
8558 | 'baseaddr' argument, which GDB uses to relocate debugging | |
8559 | information from a shared library based on the address at | |
8560 | which the library was loaded. */ | |
d00adf39 DE |
8561 | CORE_ADDR base = cu->base_address; |
8562 | int base_known = cu->base_known; | |
801e3a5b | 8563 | |
be391dca | 8564 | gdb_assert (dwarf2_per_objfile->ranges.readin); |
dce234bc | 8565 | if (offset >= dwarf2_per_objfile->ranges.size) |
801e3a5b JB |
8566 | { |
8567 | complaint (&symfile_complaints, | |
8568 | _("Offset %lu out of bounds for DW_AT_ranges attribute"), | |
8569 | offset); | |
8570 | return; | |
8571 | } | |
8572 | ||
8573 | for (;;) | |
8574 | { | |
8575 | unsigned int bytes_read; | |
8576 | CORE_ADDR start, end; | |
8577 | ||
8578 | start = read_address (obfd, buffer, cu, &bytes_read); | |
8579 | buffer += bytes_read; | |
8580 | end = read_address (obfd, buffer, cu, &bytes_read); | |
8581 | buffer += bytes_read; | |
8582 | ||
8583 | /* Did we find the end of the range list? */ | |
8584 | if (start == 0 && end == 0) | |
8585 | break; | |
8586 | ||
8587 | /* Did we find a base address selection entry? */ | |
8588 | else if ((start & base_select_mask) == base_select_mask) | |
8589 | { | |
8590 | base = end; | |
8591 | base_known = 1; | |
8592 | } | |
8593 | ||
8594 | /* We found an ordinary address range. */ | |
8595 | else | |
8596 | { | |
8597 | if (!base_known) | |
8598 | { | |
8599 | complaint (&symfile_complaints, | |
3e43a32a MS |
8600 | _("Invalid .debug_ranges data " |
8601 | "(no base address)")); | |
801e3a5b JB |
8602 | return; |
8603 | } | |
8604 | ||
9277c30c UW |
8605 | if (start > end) |
8606 | { | |
8607 | /* Inverted range entries are invalid. */ | |
8608 | complaint (&symfile_complaints, | |
8609 | _("Invalid .debug_ranges data " | |
8610 | "(inverted range)")); | |
8611 | return; | |
8612 | } | |
8613 | ||
8614 | /* Empty range entries have no effect. */ | |
8615 | if (start == end) | |
8616 | continue; | |
8617 | ||
6e70227d DE |
8618 | record_block_range (block, |
8619 | baseaddr + base + start, | |
801e3a5b JB |
8620 | baseaddr + base + end - 1); |
8621 | } | |
8622 | } | |
8623 | } | |
8624 | } | |
8625 | ||
685b1105 JK |
8626 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
8627 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 8628 | |
685b1105 JK |
8629 | static void |
8630 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 JK |
8631 | { |
8632 | const char *cs; | |
8633 | int major, minor, release; | |
8634 | ||
8635 | if (cu->producer == NULL) | |
8636 | { | |
8637 | /* For unknown compilers expect their behavior is DWARF version | |
8638 | compliant. | |
8639 | ||
8640 | GCC started to support .debug_types sections by -gdwarf-4 since | |
8641 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
8642 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
8643 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
8644 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 8645 | } |
685b1105 | 8646 | else if (strncmp (cu->producer, "GNU ", strlen ("GNU ")) == 0) |
60d5a603 | 8647 | { |
685b1105 JK |
8648 | /* Skip any identifier after "GNU " - such as "C++" or "Java". */ |
8649 | ||
ba919b58 TT |
8650 | cs = &cu->producer[strlen ("GNU ")]; |
8651 | while (*cs && !isdigit (*cs)) | |
8652 | cs++; | |
8653 | if (sscanf (cs, "%d.%d.%d", &major, &minor, &release) != 3) | |
8654 | { | |
8655 | /* Not recognized as GCC. */ | |
8656 | } | |
8657 | else | |
685b1105 JK |
8658 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); |
8659 | } | |
8660 | else if (strncmp (cu->producer, "Intel(R) C", strlen ("Intel(R) C")) == 0) | |
8661 | cu->producer_is_icc = 1; | |
8662 | else | |
8663 | { | |
8664 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
8665 | compliant. */ | |
60d5a603 JK |
8666 | } |
8667 | ||
ba919b58 | 8668 | cu->checked_producer = 1; |
685b1105 | 8669 | } |
ba919b58 | 8670 | |
685b1105 JK |
8671 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
8672 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
8673 | during 4.6.0 experimental. */ | |
8674 | ||
8675 | static int | |
8676 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) | |
8677 | { | |
8678 | if (!cu->checked_producer) | |
8679 | check_producer (cu); | |
8680 | ||
8681 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
8682 | } |
8683 | ||
8684 | /* Return the default accessibility type if it is not overriden by | |
8685 | DW_AT_accessibility. */ | |
8686 | ||
8687 | static enum dwarf_access_attribute | |
8688 | dwarf2_default_access_attribute (struct die_info *die, struct dwarf2_cu *cu) | |
8689 | { | |
8690 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) | |
8691 | { | |
8692 | /* The default DWARF 2 accessibility for members is public, the default | |
8693 | accessibility for inheritance is private. */ | |
8694 | ||
8695 | if (die->tag != DW_TAG_inheritance) | |
8696 | return DW_ACCESS_public; | |
8697 | else | |
8698 | return DW_ACCESS_private; | |
8699 | } | |
8700 | else | |
8701 | { | |
8702 | /* DWARF 3+ defines the default accessibility a different way. The same | |
8703 | rules apply now for DW_TAG_inheritance as for the members and it only | |
8704 | depends on the container kind. */ | |
8705 | ||
8706 | if (die->parent->tag == DW_TAG_class_type) | |
8707 | return DW_ACCESS_private; | |
8708 | else | |
8709 | return DW_ACCESS_public; | |
8710 | } | |
8711 | } | |
8712 | ||
74ac6d43 TT |
8713 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
8714 | offset. If the attribute was not found return 0, otherwise return | |
8715 | 1. If it was found but could not properly be handled, set *OFFSET | |
8716 | to 0. */ | |
8717 | ||
8718 | static int | |
8719 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
8720 | LONGEST *offset) | |
8721 | { | |
8722 | struct attribute *attr; | |
8723 | ||
8724 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
8725 | if (attr != NULL) | |
8726 | { | |
8727 | *offset = 0; | |
8728 | ||
8729 | /* Note that we do not check for a section offset first here. | |
8730 | This is because DW_AT_data_member_location is new in DWARF 4, | |
8731 | so if we see it, we can assume that a constant form is really | |
8732 | a constant and not a section offset. */ | |
8733 | if (attr_form_is_constant (attr)) | |
8734 | *offset = dwarf2_get_attr_constant_value (attr, 0); | |
8735 | else if (attr_form_is_section_offset (attr)) | |
8736 | dwarf2_complex_location_expr_complaint (); | |
8737 | else if (attr_form_is_block (attr)) | |
8738 | *offset = decode_locdesc (DW_BLOCK (attr), cu); | |
8739 | else | |
8740 | dwarf2_complex_location_expr_complaint (); | |
8741 | ||
8742 | return 1; | |
8743 | } | |
8744 | ||
8745 | return 0; | |
8746 | } | |
8747 | ||
c906108c SS |
8748 | /* Add an aggregate field to the field list. */ |
8749 | ||
8750 | static void | |
107d2387 | 8751 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 8752 | struct dwarf2_cu *cu) |
6e70227d | 8753 | { |
e7c27a73 | 8754 | struct objfile *objfile = cu->objfile; |
5e2b427d | 8755 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
8756 | struct nextfield *new_field; |
8757 | struct attribute *attr; | |
8758 | struct field *fp; | |
8759 | char *fieldname = ""; | |
8760 | ||
8761 | /* Allocate a new field list entry and link it in. */ | |
8762 | new_field = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 8763 | make_cleanup (xfree, new_field); |
c906108c | 8764 | memset (new_field, 0, sizeof (struct nextfield)); |
7d0ccb61 DJ |
8765 | |
8766 | if (die->tag == DW_TAG_inheritance) | |
8767 | { | |
8768 | new_field->next = fip->baseclasses; | |
8769 | fip->baseclasses = new_field; | |
8770 | } | |
8771 | else | |
8772 | { | |
8773 | new_field->next = fip->fields; | |
8774 | fip->fields = new_field; | |
8775 | } | |
c906108c SS |
8776 | fip->nfields++; |
8777 | ||
e142c38c | 8778 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
8779 | if (attr) |
8780 | new_field->accessibility = DW_UNSND (attr); | |
60d5a603 JK |
8781 | else |
8782 | new_field->accessibility = dwarf2_default_access_attribute (die, cu); | |
c906108c SS |
8783 | if (new_field->accessibility != DW_ACCESS_public) |
8784 | fip->non_public_fields = 1; | |
60d5a603 | 8785 | |
e142c38c | 8786 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
8787 | if (attr) |
8788 | new_field->virtuality = DW_UNSND (attr); | |
60d5a603 JK |
8789 | else |
8790 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
8791 | |
8792 | fp = &new_field->field; | |
a9a9bd0f | 8793 | |
e142c38c | 8794 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 8795 | { |
74ac6d43 TT |
8796 | LONGEST offset; |
8797 | ||
a9a9bd0f | 8798 | /* Data member other than a C++ static data member. */ |
6e70227d | 8799 | |
c906108c | 8800 | /* Get type of field. */ |
e7c27a73 | 8801 | fp->type = die_type (die, cu); |
c906108c | 8802 | |
d6a843b5 | 8803 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 8804 | |
c906108c | 8805 | /* Get bit size of field (zero if none). */ |
e142c38c | 8806 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
8807 | if (attr) |
8808 | { | |
8809 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
8810 | } | |
8811 | else | |
8812 | { | |
8813 | FIELD_BITSIZE (*fp) = 0; | |
8814 | } | |
8815 | ||
8816 | /* Get bit offset of field. */ | |
74ac6d43 TT |
8817 | if (handle_data_member_location (die, cu, &offset)) |
8818 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
e142c38c | 8819 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
8820 | if (attr) |
8821 | { | |
5e2b427d | 8822 | if (gdbarch_bits_big_endian (gdbarch)) |
c906108c SS |
8823 | { |
8824 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
8825 | additional bit offset from the MSB of the containing |
8826 | anonymous object to the MSB of the field. We don't | |
8827 | have to do anything special since we don't need to | |
8828 | know the size of the anonymous object. */ | |
f41f5e61 | 8829 | SET_FIELD_BITPOS (*fp, FIELD_BITPOS (*fp) + DW_UNSND (attr)); |
c906108c SS |
8830 | } |
8831 | else | |
8832 | { | |
8833 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
8834 | MSB of the anonymous object, subtract off the number of |
8835 | bits from the MSB of the field to the MSB of the | |
8836 | object, and then subtract off the number of bits of | |
8837 | the field itself. The result is the bit offset of | |
8838 | the LSB of the field. */ | |
c906108c SS |
8839 | int anonymous_size; |
8840 | int bit_offset = DW_UNSND (attr); | |
8841 | ||
e142c38c | 8842 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
8843 | if (attr) |
8844 | { | |
8845 | /* The size of the anonymous object containing | |
8846 | the bit field is explicit, so use the | |
8847 | indicated size (in bytes). */ | |
8848 | anonymous_size = DW_UNSND (attr); | |
8849 | } | |
8850 | else | |
8851 | { | |
8852 | /* The size of the anonymous object containing | |
8853 | the bit field must be inferred from the type | |
8854 | attribute of the data member containing the | |
8855 | bit field. */ | |
8856 | anonymous_size = TYPE_LENGTH (fp->type); | |
8857 | } | |
f41f5e61 PA |
8858 | SET_FIELD_BITPOS (*fp, |
8859 | (FIELD_BITPOS (*fp) | |
8860 | + anonymous_size * bits_per_byte | |
8861 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
8862 | } |
8863 | } | |
8864 | ||
8865 | /* Get name of field. */ | |
39cbfefa DJ |
8866 | fieldname = dwarf2_name (die, cu); |
8867 | if (fieldname == NULL) | |
8868 | fieldname = ""; | |
d8151005 DJ |
8869 | |
8870 | /* The name is already allocated along with this objfile, so we don't | |
8871 | need to duplicate it for the type. */ | |
8872 | fp->name = fieldname; | |
c906108c SS |
8873 | |
8874 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 8875 | pointer or virtual base class pointer) to private. */ |
e142c38c | 8876 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 8877 | { |
d48cc9dd | 8878 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
8879 | new_field->accessibility = DW_ACCESS_private; |
8880 | fip->non_public_fields = 1; | |
8881 | } | |
8882 | } | |
a9a9bd0f | 8883 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 8884 | { |
a9a9bd0f DC |
8885 | /* C++ static member. */ |
8886 | ||
8887 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
8888 | is a declaration, but all versions of G++ as of this writing | |
8889 | (so through at least 3.2.1) incorrectly generate | |
8890 | DW_TAG_variable tags. */ | |
6e70227d | 8891 | |
ff355380 | 8892 | const char *physname; |
c906108c | 8893 | |
a9a9bd0f | 8894 | /* Get name of field. */ |
39cbfefa DJ |
8895 | fieldname = dwarf2_name (die, cu); |
8896 | if (fieldname == NULL) | |
c906108c SS |
8897 | return; |
8898 | ||
254e6b9e | 8899 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
8900 | if (attr |
8901 | /* Only create a symbol if this is an external value. | |
8902 | new_symbol checks this and puts the value in the global symbol | |
8903 | table, which we want. If it is not external, new_symbol | |
8904 | will try to put the value in cu->list_in_scope which is wrong. */ | |
8905 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
8906 | { |
8907 | /* A static const member, not much different than an enum as far as | |
8908 | we're concerned, except that we can support more types. */ | |
8909 | new_symbol (die, NULL, cu); | |
8910 | } | |
8911 | ||
2df3850c | 8912 | /* Get physical name. */ |
ff355380 | 8913 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 8914 | |
d8151005 DJ |
8915 | /* The name is already allocated along with this objfile, so we don't |
8916 | need to duplicate it for the type. */ | |
8917 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 8918 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 8919 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
8920 | } |
8921 | else if (die->tag == DW_TAG_inheritance) | |
8922 | { | |
74ac6d43 | 8923 | LONGEST offset; |
d4b96c9a | 8924 | |
74ac6d43 TT |
8925 | /* C++ base class field. */ |
8926 | if (handle_data_member_location (die, cu, &offset)) | |
8927 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
c906108c | 8928 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 8929 | FIELD_TYPE (*fp) = die_type (die, cu); |
c906108c SS |
8930 | FIELD_NAME (*fp) = type_name_no_tag (fp->type); |
8931 | fip->nbaseclasses++; | |
8932 | } | |
8933 | } | |
8934 | ||
98751a41 JK |
8935 | /* Add a typedef defined in the scope of the FIP's class. */ |
8936 | ||
8937 | static void | |
8938 | dwarf2_add_typedef (struct field_info *fip, struct die_info *die, | |
8939 | struct dwarf2_cu *cu) | |
6e70227d | 8940 | { |
98751a41 | 8941 | struct objfile *objfile = cu->objfile; |
98751a41 JK |
8942 | struct typedef_field_list *new_field; |
8943 | struct attribute *attr; | |
8944 | struct typedef_field *fp; | |
8945 | char *fieldname = ""; | |
8946 | ||
8947 | /* Allocate a new field list entry and link it in. */ | |
8948 | new_field = xzalloc (sizeof (*new_field)); | |
8949 | make_cleanup (xfree, new_field); | |
8950 | ||
8951 | gdb_assert (die->tag == DW_TAG_typedef); | |
8952 | ||
8953 | fp = &new_field->field; | |
8954 | ||
8955 | /* Get name of field. */ | |
8956 | fp->name = dwarf2_name (die, cu); | |
8957 | if (fp->name == NULL) | |
8958 | return; | |
8959 | ||
8960 | fp->type = read_type_die (die, cu); | |
8961 | ||
8962 | new_field->next = fip->typedef_field_list; | |
8963 | fip->typedef_field_list = new_field; | |
8964 | fip->typedef_field_list_count++; | |
8965 | } | |
8966 | ||
c906108c SS |
8967 | /* Create the vector of fields, and attach it to the type. */ |
8968 | ||
8969 | static void | |
fba45db2 | 8970 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 8971 | struct dwarf2_cu *cu) |
c906108c SS |
8972 | { |
8973 | int nfields = fip->nfields; | |
8974 | ||
8975 | /* Record the field count, allocate space for the array of fields, | |
8976 | and create blank accessibility bitfields if necessary. */ | |
8977 | TYPE_NFIELDS (type) = nfields; | |
8978 | TYPE_FIELDS (type) = (struct field *) | |
8979 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
8980 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
8981 | ||
b4ba55a1 | 8982 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
8983 | { |
8984 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
8985 | ||
8986 | TYPE_FIELD_PRIVATE_BITS (type) = | |
8987 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
8988 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
8989 | ||
8990 | TYPE_FIELD_PROTECTED_BITS (type) = | |
8991 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
8992 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
8993 | ||
774b6a14 TT |
8994 | TYPE_FIELD_IGNORE_BITS (type) = |
8995 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
8996 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
8997 | } |
8998 | ||
8999 | /* If the type has baseclasses, allocate and clear a bit vector for | |
9000 | TYPE_FIELD_VIRTUAL_BITS. */ | |
b4ba55a1 | 9001 | if (fip->nbaseclasses && cu->language != language_ada) |
c906108c SS |
9002 | { |
9003 | int num_bytes = B_BYTES (fip->nbaseclasses); | |
fe1b8b76 | 9004 | unsigned char *pointer; |
c906108c SS |
9005 | |
9006 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
fe1b8b76 JB |
9007 | pointer = TYPE_ALLOC (type, num_bytes); |
9008 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; | |
c906108c SS |
9009 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->nbaseclasses); |
9010 | TYPE_N_BASECLASSES (type) = fip->nbaseclasses; | |
9011 | } | |
9012 | ||
3e43a32a MS |
9013 | /* Copy the saved-up fields into the field vector. Start from the head of |
9014 | the list, adding to the tail of the field array, so that they end up in | |
9015 | the same order in the array in which they were added to the list. */ | |
c906108c SS |
9016 | while (nfields-- > 0) |
9017 | { | |
7d0ccb61 DJ |
9018 | struct nextfield *fieldp; |
9019 | ||
9020 | if (fip->fields) | |
9021 | { | |
9022 | fieldp = fip->fields; | |
9023 | fip->fields = fieldp->next; | |
9024 | } | |
9025 | else | |
9026 | { | |
9027 | fieldp = fip->baseclasses; | |
9028 | fip->baseclasses = fieldp->next; | |
9029 | } | |
9030 | ||
9031 | TYPE_FIELD (type, nfields) = fieldp->field; | |
9032 | switch (fieldp->accessibility) | |
c906108c | 9033 | { |
c5aa993b | 9034 | case DW_ACCESS_private: |
b4ba55a1 JB |
9035 | if (cu->language != language_ada) |
9036 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
c5aa993b | 9037 | break; |
c906108c | 9038 | |
c5aa993b | 9039 | case DW_ACCESS_protected: |
b4ba55a1 JB |
9040 | if (cu->language != language_ada) |
9041 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
c5aa993b | 9042 | break; |
c906108c | 9043 | |
c5aa993b JM |
9044 | case DW_ACCESS_public: |
9045 | break; | |
c906108c | 9046 | |
c5aa993b JM |
9047 | default: |
9048 | /* Unknown accessibility. Complain and treat it as public. */ | |
9049 | { | |
e2e0b3e5 | 9050 | complaint (&symfile_complaints, _("unsupported accessibility %d"), |
7d0ccb61 | 9051 | fieldp->accessibility); |
c5aa993b JM |
9052 | } |
9053 | break; | |
c906108c SS |
9054 | } |
9055 | if (nfields < fip->nbaseclasses) | |
9056 | { | |
7d0ccb61 | 9057 | switch (fieldp->virtuality) |
c906108c | 9058 | { |
c5aa993b JM |
9059 | case DW_VIRTUALITY_virtual: |
9060 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 9061 | if (cu->language == language_ada) |
a73c6dcd | 9062 | error (_("unexpected virtuality in component of Ada type")); |
c5aa993b JM |
9063 | SET_TYPE_FIELD_VIRTUAL (type, nfields); |
9064 | break; | |
c906108c SS |
9065 | } |
9066 | } | |
c906108c SS |
9067 | } |
9068 | } | |
9069 | ||
c906108c SS |
9070 | /* Add a member function to the proper fieldlist. */ |
9071 | ||
9072 | static void | |
107d2387 | 9073 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 9074 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 9075 | { |
e7c27a73 | 9076 | struct objfile *objfile = cu->objfile; |
c906108c SS |
9077 | struct attribute *attr; |
9078 | struct fnfieldlist *flp; | |
9079 | int i; | |
9080 | struct fn_field *fnp; | |
9081 | char *fieldname; | |
c906108c | 9082 | struct nextfnfield *new_fnfield; |
f792889a | 9083 | struct type *this_type; |
60d5a603 | 9084 | enum dwarf_access_attribute accessibility; |
c906108c | 9085 | |
b4ba55a1 | 9086 | if (cu->language == language_ada) |
a73c6dcd | 9087 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 9088 | |
2df3850c | 9089 | /* Get name of member function. */ |
39cbfefa DJ |
9090 | fieldname = dwarf2_name (die, cu); |
9091 | if (fieldname == NULL) | |
2df3850c | 9092 | return; |
c906108c | 9093 | |
c906108c SS |
9094 | /* Look up member function name in fieldlist. */ |
9095 | for (i = 0; i < fip->nfnfields; i++) | |
9096 | { | |
27bfe10e | 9097 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
c906108c SS |
9098 | break; |
9099 | } | |
9100 | ||
9101 | /* Create new list element if necessary. */ | |
9102 | if (i < fip->nfnfields) | |
9103 | flp = &fip->fnfieldlists[i]; | |
9104 | else | |
9105 | { | |
9106 | if ((fip->nfnfields % DW_FIELD_ALLOC_CHUNK) == 0) | |
9107 | { | |
9108 | fip->fnfieldlists = (struct fnfieldlist *) | |
9109 | xrealloc (fip->fnfieldlists, | |
9110 | (fip->nfnfields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 9111 | * sizeof (struct fnfieldlist)); |
c906108c | 9112 | if (fip->nfnfields == 0) |
c13c43fd | 9113 | make_cleanup (free_current_contents, &fip->fnfieldlists); |
c906108c SS |
9114 | } |
9115 | flp = &fip->fnfieldlists[fip->nfnfields]; | |
9116 | flp->name = fieldname; | |
9117 | flp->length = 0; | |
9118 | flp->head = NULL; | |
3da10d80 | 9119 | i = fip->nfnfields++; |
c906108c SS |
9120 | } |
9121 | ||
9122 | /* Create a new member function field and chain it to the field list | |
0963b4bd | 9123 | entry. */ |
c906108c | 9124 | new_fnfield = (struct nextfnfield *) xmalloc (sizeof (struct nextfnfield)); |
b8c9b27d | 9125 | make_cleanup (xfree, new_fnfield); |
c906108c SS |
9126 | memset (new_fnfield, 0, sizeof (struct nextfnfield)); |
9127 | new_fnfield->next = flp->head; | |
9128 | flp->head = new_fnfield; | |
9129 | flp->length++; | |
9130 | ||
9131 | /* Fill in the member function field info. */ | |
9132 | fnp = &new_fnfield->fnfield; | |
3da10d80 KS |
9133 | |
9134 | /* Delay processing of the physname until later. */ | |
9135 | if (cu->language == language_cplus || cu->language == language_java) | |
9136 | { | |
9137 | add_to_method_list (type, i, flp->length - 1, fieldname, | |
9138 | die, cu); | |
9139 | } | |
9140 | else | |
9141 | { | |
1d06ead6 | 9142 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
9143 | fnp->physname = physname ? physname : ""; |
9144 | } | |
9145 | ||
c906108c | 9146 | fnp->type = alloc_type (objfile); |
f792889a DJ |
9147 | this_type = read_type_die (die, cu); |
9148 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 9149 | { |
f792889a | 9150 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 9151 | |
f792889a | 9152 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
9153 | of the method itself (TYPE_CODE_METHOD). */ |
9154 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
9155 | TYPE_TARGET_TYPE (this_type), |
9156 | TYPE_FIELDS (this_type), | |
9157 | TYPE_NFIELDS (this_type), | |
9158 | TYPE_VARARGS (this_type)); | |
c906108c SS |
9159 | |
9160 | /* Handle static member functions. | |
c5aa993b | 9161 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
9162 | member functions. G++ helps GDB by marking the first |
9163 | parameter for non-static member functions (which is the this | |
9164 | pointer) as artificial. We obtain this information from | |
9165 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 9166 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
9167 | fnp->voffset = VOFFSET_STATIC; |
9168 | } | |
9169 | else | |
e2e0b3e5 | 9170 | complaint (&symfile_complaints, _("member function type missing for '%s'"), |
3da10d80 | 9171 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
9172 | |
9173 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 9174 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 9175 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 9176 | |
3e43a32a MS |
9177 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
9178 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
9179 | |
9180 | /* Get accessibility. */ | |
e142c38c | 9181 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c | 9182 | if (attr) |
60d5a603 JK |
9183 | accessibility = DW_UNSND (attr); |
9184 | else | |
9185 | accessibility = dwarf2_default_access_attribute (die, cu); | |
9186 | switch (accessibility) | |
c906108c | 9187 | { |
60d5a603 JK |
9188 | case DW_ACCESS_private: |
9189 | fnp->is_private = 1; | |
9190 | break; | |
9191 | case DW_ACCESS_protected: | |
9192 | fnp->is_protected = 1; | |
9193 | break; | |
c906108c SS |
9194 | } |
9195 | ||
b02dede2 | 9196 | /* Check for artificial methods. */ |
e142c38c | 9197 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
9198 | if (attr && DW_UNSND (attr) != 0) |
9199 | fnp->is_artificial = 1; | |
9200 | ||
0d564a31 | 9201 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
9202 | function. For older versions of GCC, this is an offset in the |
9203 | appropriate virtual table, as specified by DW_AT_containing_type. | |
9204 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
9205 | to the object address. */ |
9206 | ||
e142c38c | 9207 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
aec5aa8b | 9208 | if (attr) |
8e19ed76 | 9209 | { |
aec5aa8b | 9210 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 9211 | { |
aec5aa8b TT |
9212 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
9213 | { | |
9214 | /* Old-style GCC. */ | |
9215 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
9216 | } | |
9217 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
9218 | || (DW_BLOCK (attr)->size > 1 | |
9219 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
9220 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
9221 | { | |
9222 | struct dwarf_block blk; | |
9223 | int offset; | |
9224 | ||
9225 | offset = (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
9226 | ? 1 : 2); | |
9227 | blk.size = DW_BLOCK (attr)->size - offset; | |
9228 | blk.data = DW_BLOCK (attr)->data + offset; | |
9229 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); | |
9230 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
9231 | dwarf2_complex_location_expr_complaint (); | |
9232 | else | |
9233 | fnp->voffset /= cu->header.addr_size; | |
9234 | fnp->voffset += 2; | |
9235 | } | |
9236 | else | |
9237 | dwarf2_complex_location_expr_complaint (); | |
9238 | ||
9239 | if (!fnp->fcontext) | |
9240 | fnp->fcontext = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
9241 | } | |
3690dd37 | 9242 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 9243 | { |
4d3c2250 | 9244 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
9245 | } |
9246 | else | |
9247 | { | |
4d3c2250 KB |
9248 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
9249 | fieldname); | |
8e19ed76 | 9250 | } |
0d564a31 | 9251 | } |
d48cc9dd DJ |
9252 | else |
9253 | { | |
9254 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
9255 | if (attr && DW_UNSND (attr)) | |
9256 | { | |
9257 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
9258 | complaint (&symfile_complaints, | |
3e43a32a MS |
9259 | _("Member function \"%s\" (offset %d) is virtual " |
9260 | "but the vtable offset is not specified"), | |
b64f50a1 | 9261 | fieldname, die->offset.sect_off); |
9655fd1a | 9262 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
9263 | TYPE_CPLUS_DYNAMIC (type) = 1; |
9264 | } | |
9265 | } | |
c906108c SS |
9266 | } |
9267 | ||
9268 | /* Create the vector of member function fields, and attach it to the type. */ | |
9269 | ||
9270 | static void | |
fba45db2 | 9271 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 9272 | struct dwarf2_cu *cu) |
c906108c SS |
9273 | { |
9274 | struct fnfieldlist *flp; | |
c906108c SS |
9275 | int i; |
9276 | ||
b4ba55a1 | 9277 | if (cu->language == language_ada) |
a73c6dcd | 9278 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 9279 | |
c906108c SS |
9280 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
9281 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
9282 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * fip->nfnfields); | |
9283 | ||
9284 | for (i = 0, flp = fip->fnfieldlists; i < fip->nfnfields; i++, flp++) | |
9285 | { | |
9286 | struct nextfnfield *nfp = flp->head; | |
9287 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); | |
9288 | int k; | |
9289 | ||
9290 | TYPE_FN_FIELDLIST_NAME (type, i) = flp->name; | |
9291 | TYPE_FN_FIELDLIST_LENGTH (type, i) = flp->length; | |
9292 | fn_flp->fn_fields = (struct fn_field *) | |
9293 | TYPE_ALLOC (type, sizeof (struct fn_field) * flp->length); | |
9294 | for (k = flp->length; (k--, nfp); nfp = nfp->next) | |
c5aa993b | 9295 | fn_flp->fn_fields[k] = nfp->fnfield; |
c906108c SS |
9296 | } |
9297 | ||
9298 | TYPE_NFN_FIELDS (type) = fip->nfnfields; | |
c906108c SS |
9299 | } |
9300 | ||
1168df01 JB |
9301 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
9302 | language, zero otherwise. */ | |
9303 | static int | |
9304 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
9305 | { | |
9306 | static const char vptr[] = "_vptr"; | |
987504bb | 9307 | static const char vtable[] = "vtable"; |
1168df01 | 9308 | |
987504bb JJ |
9309 | /* Look for the C++ and Java forms of the vtable. */ |
9310 | if ((cu->language == language_java | |
9311 | && strncmp (name, vtable, sizeof (vtable) - 1) == 0) | |
9312 | || (strncmp (name, vptr, sizeof (vptr) - 1) == 0 | |
9313 | && is_cplus_marker (name[sizeof (vptr) - 1]))) | |
1168df01 JB |
9314 | return 1; |
9315 | ||
9316 | return 0; | |
9317 | } | |
9318 | ||
c0dd20ea | 9319 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
9320 | functions, with the ABI-specified layout. If TYPE describes |
9321 | such a structure, smash it into a member function type. | |
61049d3b DJ |
9322 | |
9323 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
9324 | This is GCC PR debug/28767. */ | |
c0dd20ea | 9325 | |
0b92b5bb TT |
9326 | static void |
9327 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 9328 | { |
0b92b5bb | 9329 | struct type *pfn_type, *domain_type, *new_type; |
c0dd20ea DJ |
9330 | |
9331 | /* Check for a structure with no name and two children. */ | |
0b92b5bb TT |
9332 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2) |
9333 | return; | |
c0dd20ea DJ |
9334 | |
9335 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
9336 | if (TYPE_FIELD_NAME (type, 0) == NULL |
9337 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
9338 | || TYPE_FIELD_NAME (type, 1) == NULL | |
9339 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
9340 | return; | |
c0dd20ea DJ |
9341 | |
9342 | /* Find the type of the method. */ | |
0b92b5bb | 9343 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea DJ |
9344 | if (pfn_type == NULL |
9345 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
9346 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
0b92b5bb | 9347 | return; |
c0dd20ea DJ |
9348 | |
9349 | /* Look for the "this" argument. */ | |
9350 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
9351 | if (TYPE_NFIELDS (pfn_type) == 0 | |
0b92b5bb | 9352 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
c0dd20ea | 9353 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) |
0b92b5bb | 9354 | return; |
c0dd20ea DJ |
9355 | |
9356 | domain_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); | |
0b92b5bb TT |
9357 | new_type = alloc_type (objfile); |
9358 | smash_to_method_type (new_type, domain_type, TYPE_TARGET_TYPE (pfn_type), | |
c0dd20ea DJ |
9359 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), |
9360 | TYPE_VARARGS (pfn_type)); | |
0b92b5bb | 9361 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 9362 | } |
1168df01 | 9363 | |
685b1105 JK |
9364 | /* Return non-zero if the CU's PRODUCER string matches the Intel C/C++ compiler |
9365 | (icc). */ | |
9366 | ||
9367 | static int | |
9368 | producer_is_icc (struct dwarf2_cu *cu) | |
9369 | { | |
9370 | if (!cu->checked_producer) | |
9371 | check_producer (cu); | |
9372 | ||
9373 | return cu->producer_is_icc; | |
9374 | } | |
9375 | ||
c906108c | 9376 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
9377 | (definition) to create a type for the structure or union. Fill in |
9378 | the type's name and general properties; the members will not be | |
9379 | processed until process_structure_type. | |
c906108c | 9380 | |
c767944b DJ |
9381 | NOTE: we need to call these functions regardless of whether or not the |
9382 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c SS |
9383 | structure or union. This gets the type entered into our set of |
9384 | user defined types. | |
9385 | ||
9386 | However, if the structure is incomplete (an opaque struct/union) | |
9387 | then suppress creating a symbol table entry for it since gdb only | |
9388 | wants to find the one with the complete definition. Note that if | |
9389 | it is complete, we just call new_symbol, which does it's own | |
9390 | checking about whether the struct/union is anonymous or not (and | |
9391 | suppresses creating a symbol table entry itself). */ | |
9392 | ||
f792889a | 9393 | static struct type * |
134d01f1 | 9394 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 9395 | { |
e7c27a73 | 9396 | struct objfile *objfile = cu->objfile; |
c906108c SS |
9397 | struct type *type; |
9398 | struct attribute *attr; | |
39cbfefa | 9399 | char *name; |
c906108c | 9400 | |
348e048f DE |
9401 | /* If the definition of this type lives in .debug_types, read that type. |
9402 | Don't follow DW_AT_specification though, that will take us back up | |
9403 | the chain and we want to go down. */ | |
9404 | attr = dwarf2_attr_no_follow (die, DW_AT_signature, cu); | |
9405 | if (attr) | |
9406 | { | |
9407 | struct dwarf2_cu *type_cu = cu; | |
9408 | struct die_info *type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
9a619af0 | 9409 | |
348e048f DE |
9410 | /* We could just recurse on read_structure_type, but we need to call |
9411 | get_die_type to ensure only one type for this DIE is created. | |
9412 | This is important, for example, because for c++ classes we need | |
9413 | TYPE_NAME set which is only done by new_symbol. Blech. */ | |
9414 | type = read_type_die (type_die, type_cu); | |
9dc481d3 DE |
9415 | |
9416 | /* TYPE_CU may not be the same as CU. | |
9417 | Ensure TYPE is recorded in CU's type_hash table. */ | |
348e048f DE |
9418 | return set_die_type (die, type, cu); |
9419 | } | |
9420 | ||
c0dd20ea | 9421 | type = alloc_type (objfile); |
c906108c | 9422 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 9423 | |
39cbfefa DJ |
9424 | name = dwarf2_name (die, cu); |
9425 | if (name != NULL) | |
c906108c | 9426 | { |
987504bb JJ |
9427 | if (cu->language == language_cplus |
9428 | || cu->language == language_java) | |
63d06c5c | 9429 | { |
3da10d80 KS |
9430 | char *full_name = (char *) dwarf2_full_name (name, die, cu); |
9431 | ||
9432 | /* dwarf2_full_name might have already finished building the DIE's | |
9433 | type. If so, there is no need to continue. */ | |
9434 | if (get_die_type (die, cu) != NULL) | |
9435 | return get_die_type (die, cu); | |
9436 | ||
9437 | TYPE_TAG_NAME (type) = full_name; | |
94af9270 KS |
9438 | if (die->tag == DW_TAG_structure_type |
9439 | || die->tag == DW_TAG_class_type) | |
9440 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c DC |
9441 | } |
9442 | else | |
9443 | { | |
d8151005 DJ |
9444 | /* The name is already allocated along with this objfile, so |
9445 | we don't need to duplicate it for the type. */ | |
94af9270 KS |
9446 | TYPE_TAG_NAME (type) = (char *) name; |
9447 | if (die->tag == DW_TAG_class_type) | |
9448 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c | 9449 | } |
c906108c SS |
9450 | } |
9451 | ||
9452 | if (die->tag == DW_TAG_structure_type) | |
9453 | { | |
9454 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
9455 | } | |
9456 | else if (die->tag == DW_TAG_union_type) | |
9457 | { | |
9458 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
9459 | } | |
9460 | else | |
9461 | { | |
c906108c SS |
9462 | TYPE_CODE (type) = TYPE_CODE_CLASS; |
9463 | } | |
9464 | ||
0cc2414c TT |
9465 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
9466 | TYPE_DECLARED_CLASS (type) = 1; | |
9467 | ||
e142c38c | 9468 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
9469 | if (attr) |
9470 | { | |
9471 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
9472 | } | |
9473 | else | |
9474 | { | |
9475 | TYPE_LENGTH (type) = 0; | |
9476 | } | |
9477 | ||
685b1105 JK |
9478 | if (producer_is_icc (cu)) |
9479 | { | |
9480 | /* ICC does not output the required DW_AT_declaration | |
9481 | on incomplete types, but gives them a size of zero. */ | |
9482 | } | |
9483 | else | |
9484 | TYPE_STUB_SUPPORTED (type) = 1; | |
9485 | ||
dc718098 | 9486 | if (die_is_declaration (die, cu)) |
876cecd0 | 9487 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
9488 | else if (attr == NULL && die->child == NULL |
9489 | && producer_is_realview (cu->producer)) | |
9490 | /* RealView does not output the required DW_AT_declaration | |
9491 | on incomplete types. */ | |
9492 | TYPE_STUB (type) = 1; | |
dc718098 | 9493 | |
c906108c SS |
9494 | /* We need to add the type field to the die immediately so we don't |
9495 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 9496 | type within the structure itself. */ |
1c379e20 | 9497 | set_die_type (die, type, cu); |
c906108c | 9498 | |
7e314c57 JK |
9499 | /* set_die_type should be already done. */ |
9500 | set_descriptive_type (type, die, cu); | |
9501 | ||
c767944b DJ |
9502 | return type; |
9503 | } | |
9504 | ||
9505 | /* Finish creating a structure or union type, including filling in | |
9506 | its members and creating a symbol for it. */ | |
9507 | ||
9508 | static void | |
9509 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
9510 | { | |
9511 | struct objfile *objfile = cu->objfile; | |
9512 | struct die_info *child_die = die->child; | |
9513 | struct type *type; | |
9514 | ||
9515 | type = get_die_type (die, cu); | |
9516 | if (type == NULL) | |
9517 | type = read_structure_type (die, cu); | |
9518 | ||
e142c38c | 9519 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
9520 | { |
9521 | struct field_info fi; | |
9522 | struct die_info *child_die; | |
34eaf542 | 9523 | VEC (symbolp) *template_args = NULL; |
c767944b | 9524 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
c906108c SS |
9525 | |
9526 | memset (&fi, 0, sizeof (struct field_info)); | |
9527 | ||
639d11d3 | 9528 | child_die = die->child; |
c906108c SS |
9529 | |
9530 | while (child_die && child_die->tag) | |
9531 | { | |
a9a9bd0f DC |
9532 | if (child_die->tag == DW_TAG_member |
9533 | || child_die->tag == DW_TAG_variable) | |
c906108c | 9534 | { |
a9a9bd0f DC |
9535 | /* NOTE: carlton/2002-11-05: A C++ static data member |
9536 | should be a DW_TAG_member that is a declaration, but | |
9537 | all versions of G++ as of this writing (so through at | |
9538 | least 3.2.1) incorrectly generate DW_TAG_variable | |
9539 | tags for them instead. */ | |
e7c27a73 | 9540 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 9541 | } |
8713b1b1 | 9542 | else if (child_die->tag == DW_TAG_subprogram) |
c906108c | 9543 | { |
0963b4bd | 9544 | /* C++ member function. */ |
e7c27a73 | 9545 | dwarf2_add_member_fn (&fi, child_die, type, cu); |
c906108c SS |
9546 | } |
9547 | else if (child_die->tag == DW_TAG_inheritance) | |
9548 | { | |
9549 | /* C++ base class field. */ | |
e7c27a73 | 9550 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 9551 | } |
98751a41 JK |
9552 | else if (child_die->tag == DW_TAG_typedef) |
9553 | dwarf2_add_typedef (&fi, child_die, cu); | |
34eaf542 TT |
9554 | else if (child_die->tag == DW_TAG_template_type_param |
9555 | || child_die->tag == DW_TAG_template_value_param) | |
9556 | { | |
9557 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
9558 | ||
f1078f66 DJ |
9559 | if (arg != NULL) |
9560 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
9561 | } |
9562 | ||
c906108c SS |
9563 | child_die = sibling_die (child_die); |
9564 | } | |
9565 | ||
34eaf542 TT |
9566 | /* Attach template arguments to type. */ |
9567 | if (! VEC_empty (symbolp, template_args)) | |
9568 | { | |
9569 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
9570 | TYPE_N_TEMPLATE_ARGUMENTS (type) | |
9571 | = VEC_length (symbolp, template_args); | |
9572 | TYPE_TEMPLATE_ARGUMENTS (type) | |
9573 | = obstack_alloc (&objfile->objfile_obstack, | |
9574 | (TYPE_N_TEMPLATE_ARGUMENTS (type) | |
9575 | * sizeof (struct symbol *))); | |
9576 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), | |
9577 | VEC_address (symbolp, template_args), | |
9578 | (TYPE_N_TEMPLATE_ARGUMENTS (type) | |
9579 | * sizeof (struct symbol *))); | |
9580 | VEC_free (symbolp, template_args); | |
9581 | } | |
9582 | ||
c906108c SS |
9583 | /* Attach fields and member functions to the type. */ |
9584 | if (fi.nfields) | |
e7c27a73 | 9585 | dwarf2_attach_fields_to_type (&fi, type, cu); |
c906108c SS |
9586 | if (fi.nfnfields) |
9587 | { | |
e7c27a73 | 9588 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 9589 | |
c5aa993b | 9590 | /* Get the type which refers to the base class (possibly this |
c906108c | 9591 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
9592 | class from the DW_AT_containing_type attribute. This use of |
9593 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 9594 | |
e142c38c | 9595 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 9596 | { |
e7c27a73 | 9597 | struct type *t = die_containing_type (die, cu); |
c906108c SS |
9598 | |
9599 | TYPE_VPTR_BASETYPE (type) = t; | |
9600 | if (type == t) | |
9601 | { | |
c906108c SS |
9602 | int i; |
9603 | ||
9604 | /* Our own class provides vtbl ptr. */ | |
9605 | for (i = TYPE_NFIELDS (t) - 1; | |
9606 | i >= TYPE_N_BASECLASSES (t); | |
9607 | --i) | |
9608 | { | |
0d5cff50 | 9609 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 9610 | |
1168df01 | 9611 | if (is_vtable_name (fieldname, cu)) |
c906108c SS |
9612 | { |
9613 | TYPE_VPTR_FIELDNO (type) = i; | |
9614 | break; | |
9615 | } | |
9616 | } | |
9617 | ||
9618 | /* Complain if virtual function table field not found. */ | |
9619 | if (i < TYPE_N_BASECLASSES (t)) | |
4d3c2250 | 9620 | complaint (&symfile_complaints, |
3e43a32a MS |
9621 | _("virtual function table pointer " |
9622 | "not found when defining class '%s'"), | |
4d3c2250 KB |
9623 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : |
9624 | ""); | |
c906108c SS |
9625 | } |
9626 | else | |
9627 | { | |
9628 | TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t); | |
9629 | } | |
9630 | } | |
f6235d4c EZ |
9631 | else if (cu->producer |
9632 | && strncmp (cu->producer, | |
9633 | "IBM(R) XL C/C++ Advanced Edition", 32) == 0) | |
9634 | { | |
9635 | /* The IBM XLC compiler does not provide direct indication | |
9636 | of the containing type, but the vtable pointer is | |
9637 | always named __vfp. */ | |
9638 | ||
9639 | int i; | |
9640 | ||
9641 | for (i = TYPE_NFIELDS (type) - 1; | |
9642 | i >= TYPE_N_BASECLASSES (type); | |
9643 | --i) | |
9644 | { | |
9645 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
9646 | { | |
9647 | TYPE_VPTR_FIELDNO (type) = i; | |
9648 | TYPE_VPTR_BASETYPE (type) = type; | |
9649 | break; | |
9650 | } | |
9651 | } | |
9652 | } | |
c906108c | 9653 | } |
98751a41 JK |
9654 | |
9655 | /* Copy fi.typedef_field_list linked list elements content into the | |
9656 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
9657 | if (fi.typedef_field_list) | |
9658 | { | |
9659 | int i = fi.typedef_field_list_count; | |
9660 | ||
a0d7a4ff | 9661 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 JK |
9662 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
9663 | = TYPE_ALLOC (type, sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * i); | |
9664 | TYPE_TYPEDEF_FIELD_COUNT (type) = i; | |
9665 | ||
9666 | /* Reverse the list order to keep the debug info elements order. */ | |
9667 | while (--i >= 0) | |
9668 | { | |
9669 | struct typedef_field *dest, *src; | |
6e70227d | 9670 | |
98751a41 JK |
9671 | dest = &TYPE_TYPEDEF_FIELD (type, i); |
9672 | src = &fi.typedef_field_list->field; | |
9673 | fi.typedef_field_list = fi.typedef_field_list->next; | |
9674 | *dest = *src; | |
9675 | } | |
9676 | } | |
c767944b DJ |
9677 | |
9678 | do_cleanups (back_to); | |
eb2a6f42 TT |
9679 | |
9680 | if (HAVE_CPLUS_STRUCT (type)) | |
9681 | TYPE_CPLUS_REALLY_JAVA (type) = cu->language == language_java; | |
c906108c | 9682 | } |
63d06c5c | 9683 | |
bb5ed363 | 9684 | quirk_gcc_member_function_pointer (type, objfile); |
0b92b5bb | 9685 | |
90aeadfc DC |
9686 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
9687 | snapshots) has been known to create a die giving a declaration | |
9688 | for a class that has, as a child, a die giving a definition for a | |
9689 | nested class. So we have to process our children even if the | |
9690 | current die is a declaration. Normally, of course, a declaration | |
9691 | won't have any children at all. */ | |
134d01f1 | 9692 | |
90aeadfc DC |
9693 | while (child_die != NULL && child_die->tag) |
9694 | { | |
9695 | if (child_die->tag == DW_TAG_member | |
9696 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
9697 | || child_die->tag == DW_TAG_inheritance |
9698 | || child_die->tag == DW_TAG_template_value_param | |
9699 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 9700 | { |
90aeadfc | 9701 | /* Do nothing. */ |
134d01f1 | 9702 | } |
90aeadfc DC |
9703 | else |
9704 | process_die (child_die, cu); | |
134d01f1 | 9705 | |
90aeadfc | 9706 | child_die = sibling_die (child_die); |
134d01f1 DJ |
9707 | } |
9708 | ||
fa4028e9 JB |
9709 | /* Do not consider external references. According to the DWARF standard, |
9710 | these DIEs are identified by the fact that they have no byte_size | |
9711 | attribute, and a declaration attribute. */ | |
9712 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
9713 | || !die_is_declaration (die, cu)) | |
c767944b | 9714 | new_symbol (die, type, cu); |
134d01f1 DJ |
9715 | } |
9716 | ||
9717 | /* Given a DW_AT_enumeration_type die, set its type. We do not | |
9718 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 9719 | |
f792889a | 9720 | static struct type * |
134d01f1 | 9721 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 9722 | { |
e7c27a73 | 9723 | struct objfile *objfile = cu->objfile; |
c906108c | 9724 | struct type *type; |
c906108c | 9725 | struct attribute *attr; |
0114d602 | 9726 | const char *name; |
134d01f1 | 9727 | |
348e048f DE |
9728 | /* If the definition of this type lives in .debug_types, read that type. |
9729 | Don't follow DW_AT_specification though, that will take us back up | |
9730 | the chain and we want to go down. */ | |
9731 | attr = dwarf2_attr_no_follow (die, DW_AT_signature, cu); | |
9732 | if (attr) | |
9733 | { | |
9734 | struct dwarf2_cu *type_cu = cu; | |
9735 | struct die_info *type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
9a619af0 | 9736 | |
348e048f | 9737 | type = read_type_die (type_die, type_cu); |
9dc481d3 DE |
9738 | |
9739 | /* TYPE_CU may not be the same as CU. | |
9740 | Ensure TYPE is recorded in CU's type_hash table. */ | |
348e048f DE |
9741 | return set_die_type (die, type, cu); |
9742 | } | |
9743 | ||
c906108c SS |
9744 | type = alloc_type (objfile); |
9745 | ||
9746 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
94af9270 | 9747 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 9748 | if (name != NULL) |
0114d602 | 9749 | TYPE_TAG_NAME (type) = (char *) name; |
c906108c | 9750 | |
e142c38c | 9751 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
9752 | if (attr) |
9753 | { | |
9754 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
9755 | } | |
9756 | else | |
9757 | { | |
9758 | TYPE_LENGTH (type) = 0; | |
9759 | } | |
9760 | ||
137033e9 JB |
9761 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
9762 | declared as private in the package spec, and then defined only | |
9763 | inside the package body. Such types are known as Taft Amendment | |
9764 | Types. When another package uses such a type, an incomplete DIE | |
9765 | may be generated by the compiler. */ | |
02eb380e | 9766 | if (die_is_declaration (die, cu)) |
876cecd0 | 9767 | TYPE_STUB (type) = 1; |
02eb380e | 9768 | |
f792889a | 9769 | return set_die_type (die, type, cu); |
134d01f1 DJ |
9770 | } |
9771 | ||
9772 | /* Given a pointer to a die which begins an enumeration, process all | |
9773 | the dies that define the members of the enumeration, and create the | |
9774 | symbol for the enumeration type. | |
9775 | ||
9776 | NOTE: We reverse the order of the element list. */ | |
9777 | ||
9778 | static void | |
9779 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
9780 | { | |
f792889a | 9781 | struct type *this_type; |
134d01f1 | 9782 | |
f792889a DJ |
9783 | this_type = get_die_type (die, cu); |
9784 | if (this_type == NULL) | |
9785 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 9786 | |
639d11d3 | 9787 | if (die->child != NULL) |
c906108c | 9788 | { |
9dc481d3 DE |
9789 | struct die_info *child_die; |
9790 | struct symbol *sym; | |
9791 | struct field *fields = NULL; | |
9792 | int num_fields = 0; | |
9793 | int unsigned_enum = 1; | |
9794 | char *name; | |
cafec441 TT |
9795 | int flag_enum = 1; |
9796 | ULONGEST mask = 0; | |
9dc481d3 | 9797 | |
639d11d3 | 9798 | child_die = die->child; |
c906108c SS |
9799 | while (child_die && child_die->tag) |
9800 | { | |
9801 | if (child_die->tag != DW_TAG_enumerator) | |
9802 | { | |
e7c27a73 | 9803 | process_die (child_die, cu); |
c906108c SS |
9804 | } |
9805 | else | |
9806 | { | |
39cbfefa DJ |
9807 | name = dwarf2_name (child_die, cu); |
9808 | if (name) | |
c906108c | 9809 | { |
f792889a | 9810 | sym = new_symbol (child_die, this_type, cu); |
c906108c | 9811 | if (SYMBOL_VALUE (sym) < 0) |
cafec441 TT |
9812 | { |
9813 | unsigned_enum = 0; | |
9814 | flag_enum = 0; | |
9815 | } | |
9816 | else if ((mask & SYMBOL_VALUE (sym)) != 0) | |
9817 | flag_enum = 0; | |
9818 | else | |
9819 | mask |= SYMBOL_VALUE (sym); | |
c906108c SS |
9820 | |
9821 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
9822 | { | |
9823 | fields = (struct field *) | |
9824 | xrealloc (fields, | |
9825 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 9826 | * sizeof (struct field)); |
c906108c SS |
9827 | } |
9828 | ||
3567439c | 9829 | FIELD_NAME (fields[num_fields]) = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 9830 | FIELD_TYPE (fields[num_fields]) = NULL; |
14e75d8e | 9831 | SET_FIELD_ENUMVAL (fields[num_fields], SYMBOL_VALUE (sym)); |
c906108c SS |
9832 | FIELD_BITSIZE (fields[num_fields]) = 0; |
9833 | ||
9834 | num_fields++; | |
9835 | } | |
9836 | } | |
9837 | ||
9838 | child_die = sibling_die (child_die); | |
9839 | } | |
9840 | ||
9841 | if (num_fields) | |
9842 | { | |
f792889a DJ |
9843 | TYPE_NFIELDS (this_type) = num_fields; |
9844 | TYPE_FIELDS (this_type) = (struct field *) | |
9845 | TYPE_ALLOC (this_type, sizeof (struct field) * num_fields); | |
9846 | memcpy (TYPE_FIELDS (this_type), fields, | |
c906108c | 9847 | sizeof (struct field) * num_fields); |
b8c9b27d | 9848 | xfree (fields); |
c906108c SS |
9849 | } |
9850 | if (unsigned_enum) | |
876cecd0 | 9851 | TYPE_UNSIGNED (this_type) = 1; |
cafec441 TT |
9852 | if (flag_enum) |
9853 | TYPE_FLAG_ENUM (this_type) = 1; | |
c906108c | 9854 | } |
134d01f1 | 9855 | |
6c83ed52 TT |
9856 | /* If we are reading an enum from a .debug_types unit, and the enum |
9857 | is a declaration, and the enum is not the signatured type in the | |
9858 | unit, then we do not want to add a symbol for it. Adding a | |
9859 | symbol would in some cases obscure the true definition of the | |
9860 | enum, giving users an incomplete type when the definition is | |
9861 | actually available. Note that we do not want to do this for all | |
9862 | enums which are just declarations, because C++0x allows forward | |
9863 | enum declarations. */ | |
3019eac3 | 9864 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
9865 | && die_is_declaration (die, cu)) |
9866 | { | |
52dc124a | 9867 | struct signatured_type *sig_type; |
6c83ed52 | 9868 | |
52dc124a | 9869 | sig_type |
6c83ed52 | 9870 | = lookup_signatured_type_at_offset (dwarf2_per_objfile->objfile, |
3019eac3 | 9871 | cu->per_cu->info_or_types_section, |
6c83ed52 | 9872 | cu->per_cu->offset); |
3019eac3 DE |
9873 | gdb_assert (sig_type->type_offset_in_section.sect_off != 0); |
9874 | if (sig_type->type_offset_in_section.sect_off != die->offset.sect_off) | |
6c83ed52 TT |
9875 | return; |
9876 | } | |
9877 | ||
f792889a | 9878 | new_symbol (die, this_type, cu); |
c906108c SS |
9879 | } |
9880 | ||
9881 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
9882 | the DIE's type field. For now, this only handles one dimensional | |
9883 | arrays. */ | |
9884 | ||
f792889a | 9885 | static struct type * |
e7c27a73 | 9886 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 9887 | { |
e7c27a73 | 9888 | struct objfile *objfile = cu->objfile; |
c906108c | 9889 | struct die_info *child_die; |
7e314c57 | 9890 | struct type *type; |
c906108c SS |
9891 | struct type *element_type, *range_type, *index_type; |
9892 | struct type **range_types = NULL; | |
9893 | struct attribute *attr; | |
9894 | int ndim = 0; | |
9895 | struct cleanup *back_to; | |
39cbfefa | 9896 | char *name; |
c906108c | 9897 | |
e7c27a73 | 9898 | element_type = die_type (die, cu); |
c906108c | 9899 | |
7e314c57 JK |
9900 | /* The die_type call above may have already set the type for this DIE. */ |
9901 | type = get_die_type (die, cu); | |
9902 | if (type) | |
9903 | return type; | |
9904 | ||
c906108c SS |
9905 | /* Irix 6.2 native cc creates array types without children for |
9906 | arrays with unspecified length. */ | |
639d11d3 | 9907 | if (die->child == NULL) |
c906108c | 9908 | { |
46bf5051 | 9909 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 9910 | range_type = create_range_type (NULL, index_type, 0, -1); |
f792889a DJ |
9911 | type = create_array_type (NULL, element_type, range_type); |
9912 | return set_die_type (die, type, cu); | |
c906108c SS |
9913 | } |
9914 | ||
9915 | back_to = make_cleanup (null_cleanup, NULL); | |
639d11d3 | 9916 | child_die = die->child; |
c906108c SS |
9917 | while (child_die && child_die->tag) |
9918 | { | |
9919 | if (child_die->tag == DW_TAG_subrange_type) | |
9920 | { | |
f792889a | 9921 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 9922 | |
f792889a | 9923 | if (child_type != NULL) |
a02abb62 | 9924 | { |
0963b4bd MS |
9925 | /* The range type was succesfully read. Save it for the |
9926 | array type creation. */ | |
a02abb62 JB |
9927 | if ((ndim % DW_FIELD_ALLOC_CHUNK) == 0) |
9928 | { | |
9929 | range_types = (struct type **) | |
9930 | xrealloc (range_types, (ndim + DW_FIELD_ALLOC_CHUNK) | |
9931 | * sizeof (struct type *)); | |
9932 | if (ndim == 0) | |
9933 | make_cleanup (free_current_contents, &range_types); | |
9934 | } | |
f792889a | 9935 | range_types[ndim++] = child_type; |
a02abb62 | 9936 | } |
c906108c SS |
9937 | } |
9938 | child_die = sibling_die (child_die); | |
9939 | } | |
9940 | ||
9941 | /* Dwarf2 dimensions are output from left to right, create the | |
9942 | necessary array types in backwards order. */ | |
7ca2d3a3 | 9943 | |
c906108c | 9944 | type = element_type; |
7ca2d3a3 DL |
9945 | |
9946 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
9947 | { | |
9948 | int i = 0; | |
9a619af0 | 9949 | |
7ca2d3a3 DL |
9950 | while (i < ndim) |
9951 | type = create_array_type (NULL, type, range_types[i++]); | |
9952 | } | |
9953 | else | |
9954 | { | |
9955 | while (ndim-- > 0) | |
9956 | type = create_array_type (NULL, type, range_types[ndim]); | |
9957 | } | |
c906108c | 9958 | |
f5f8a009 EZ |
9959 | /* Understand Dwarf2 support for vector types (like they occur on |
9960 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
9961 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
9962 | custom vendor extension. The main difference between a regular | |
9963 | array and the vector variant is that vectors are passed by value | |
9964 | to functions. */ | |
e142c38c | 9965 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 | 9966 | if (attr) |
ea37ba09 | 9967 | make_vector_type (type); |
f5f8a009 | 9968 | |
dbc98a8b KW |
9969 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
9970 | implementation may choose to implement triple vectors using this | |
9971 | attribute. */ | |
9972 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
9973 | if (attr) | |
9974 | { | |
9975 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
9976 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
9977 | else | |
3e43a32a MS |
9978 | complaint (&symfile_complaints, |
9979 | _("DW_AT_byte_size for array type smaller " | |
9980 | "than the total size of elements")); | |
dbc98a8b KW |
9981 | } |
9982 | ||
39cbfefa DJ |
9983 | name = dwarf2_name (die, cu); |
9984 | if (name) | |
9985 | TYPE_NAME (type) = name; | |
6e70227d | 9986 | |
0963b4bd | 9987 | /* Install the type in the die. */ |
7e314c57 JK |
9988 | set_die_type (die, type, cu); |
9989 | ||
9990 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
9991 | set_descriptive_type (type, die, cu); |
9992 | ||
c906108c SS |
9993 | do_cleanups (back_to); |
9994 | ||
7e314c57 | 9995 | return type; |
c906108c SS |
9996 | } |
9997 | ||
7ca2d3a3 | 9998 | static enum dwarf_array_dim_ordering |
6e70227d | 9999 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
10000 | { |
10001 | struct attribute *attr; | |
10002 | ||
10003 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
10004 | ||
10005 | if (attr) return DW_SND (attr); | |
10006 | ||
0963b4bd MS |
10007 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
10008 | opposite order to the dwarf2 specification, but data is still | |
10009 | laid out as per normal fortran. | |
7ca2d3a3 | 10010 | |
0963b4bd MS |
10011 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
10012 | version checking. */ | |
7ca2d3a3 | 10013 | |
905e0470 PM |
10014 | if (cu->language == language_fortran |
10015 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
10016 | { |
10017 | return DW_ORD_row_major; | |
10018 | } | |
10019 | ||
6e70227d | 10020 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
10021 | { |
10022 | case array_column_major: | |
10023 | return DW_ORD_col_major; | |
10024 | case array_row_major: | |
10025 | default: | |
10026 | return DW_ORD_row_major; | |
10027 | }; | |
10028 | } | |
10029 | ||
72019c9c | 10030 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 10031 | the DIE's type field. */ |
72019c9c | 10032 | |
f792889a | 10033 | static struct type * |
72019c9c GM |
10034 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
10035 | { | |
7e314c57 JK |
10036 | struct type *domain_type, *set_type; |
10037 | struct attribute *attr; | |
f792889a | 10038 | |
7e314c57 JK |
10039 | domain_type = die_type (die, cu); |
10040 | ||
10041 | /* The die_type call above may have already set the type for this DIE. */ | |
10042 | set_type = get_die_type (die, cu); | |
10043 | if (set_type) | |
10044 | return set_type; | |
10045 | ||
10046 | set_type = create_set_type (NULL, domain_type); | |
10047 | ||
10048 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
d09039dd PM |
10049 | if (attr) |
10050 | TYPE_LENGTH (set_type) = DW_UNSND (attr); | |
7e314c57 | 10051 | |
f792889a | 10052 | return set_die_type (die, set_type, cu); |
72019c9c | 10053 | } |
7ca2d3a3 | 10054 | |
c906108c SS |
10055 | /* First cut: install each common block member as a global variable. */ |
10056 | ||
10057 | static void | |
e7c27a73 | 10058 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
10059 | { |
10060 | struct die_info *child_die; | |
10061 | struct attribute *attr; | |
10062 | struct symbol *sym; | |
10063 | CORE_ADDR base = (CORE_ADDR) 0; | |
10064 | ||
e142c38c | 10065 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
10066 | if (attr) |
10067 | { | |
0963b4bd | 10068 | /* Support the .debug_loc offsets. */ |
8e19ed76 PS |
10069 | if (attr_form_is_block (attr)) |
10070 | { | |
e7c27a73 | 10071 | base = decode_locdesc (DW_BLOCK (attr), cu); |
8e19ed76 | 10072 | } |
3690dd37 | 10073 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 10074 | { |
4d3c2250 | 10075 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
10076 | } |
10077 | else | |
10078 | { | |
4d3c2250 KB |
10079 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
10080 | "common block member"); | |
8e19ed76 | 10081 | } |
c906108c | 10082 | } |
639d11d3 | 10083 | if (die->child != NULL) |
c906108c | 10084 | { |
639d11d3 | 10085 | child_die = die->child; |
c906108c SS |
10086 | while (child_die && child_die->tag) |
10087 | { | |
74ac6d43 TT |
10088 | LONGEST offset; |
10089 | ||
e7c27a73 | 10090 | sym = new_symbol (child_die, NULL, cu); |
e8d28ef4 TT |
10091 | if (sym != NULL |
10092 | && handle_data_member_location (child_die, cu, &offset)) | |
c906108c | 10093 | { |
74ac6d43 | 10094 | SYMBOL_VALUE_ADDRESS (sym) = base + offset; |
c906108c SS |
10095 | add_symbol_to_list (sym, &global_symbols); |
10096 | } | |
10097 | child_die = sibling_die (child_die); | |
10098 | } | |
10099 | } | |
10100 | } | |
10101 | ||
0114d602 | 10102 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 10103 | |
0114d602 DJ |
10104 | static struct type * |
10105 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 10106 | { |
e7c27a73 | 10107 | struct objfile *objfile = cu->objfile; |
0114d602 | 10108 | const char *previous_prefix, *name; |
9219021c | 10109 | int is_anonymous; |
0114d602 DJ |
10110 | struct type *type; |
10111 | ||
10112 | /* For extensions, reuse the type of the original namespace. */ | |
10113 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
10114 | { | |
10115 | struct die_info *ext_die; | |
10116 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 10117 | |
0114d602 DJ |
10118 | ext_die = dwarf2_extension (die, &ext_cu); |
10119 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
10120 | |
10121 | /* EXT_CU may not be the same as CU. | |
10122 | Ensure TYPE is recorded in CU's type_hash table. */ | |
0114d602 DJ |
10123 | return set_die_type (die, type, cu); |
10124 | } | |
9219021c | 10125 | |
e142c38c | 10126 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
10127 | |
10128 | /* Now build the name of the current namespace. */ | |
10129 | ||
0114d602 DJ |
10130 | previous_prefix = determine_prefix (die, cu); |
10131 | if (previous_prefix[0] != '\0') | |
10132 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 10133 | previous_prefix, name, 0, cu); |
0114d602 DJ |
10134 | |
10135 | /* Create the type. */ | |
10136 | type = init_type (TYPE_CODE_NAMESPACE, 0, 0, NULL, | |
10137 | objfile); | |
10138 | TYPE_NAME (type) = (char *) name; | |
10139 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
10140 | ||
60531b24 | 10141 | return set_die_type (die, type, cu); |
0114d602 DJ |
10142 | } |
10143 | ||
10144 | /* Read a C++ namespace. */ | |
10145 | ||
10146 | static void | |
10147 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
10148 | { | |
10149 | struct objfile *objfile = cu->objfile; | |
0114d602 | 10150 | int is_anonymous; |
9219021c | 10151 | |
5c4e30ca DC |
10152 | /* Add a symbol associated to this if we haven't seen the namespace |
10153 | before. Also, add a using directive if it's an anonymous | |
10154 | namespace. */ | |
9219021c | 10155 | |
f2f0e013 | 10156 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
10157 | { |
10158 | struct type *type; | |
10159 | ||
0114d602 | 10160 | type = read_type_die (die, cu); |
e7c27a73 | 10161 | new_symbol (die, type, cu); |
5c4e30ca | 10162 | |
e8e80198 | 10163 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 10164 | if (is_anonymous) |
0114d602 DJ |
10165 | { |
10166 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 10167 | |
c0cc3a76 | 10168 | cp_add_using_directive (previous_prefix, TYPE_NAME (type), NULL, |
32019081 | 10169 | NULL, NULL, &objfile->objfile_obstack); |
0114d602 | 10170 | } |
5c4e30ca | 10171 | } |
9219021c | 10172 | |
639d11d3 | 10173 | if (die->child != NULL) |
d9fa45fe | 10174 | { |
639d11d3 | 10175 | struct die_info *child_die = die->child; |
6e70227d | 10176 | |
d9fa45fe DC |
10177 | while (child_die && child_die->tag) |
10178 | { | |
e7c27a73 | 10179 | process_die (child_die, cu); |
d9fa45fe DC |
10180 | child_die = sibling_die (child_die); |
10181 | } | |
10182 | } | |
38d518c9 EZ |
10183 | } |
10184 | ||
f55ee35c JK |
10185 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
10186 | imported module. Still we need that type as local Fortran "use ... only" | |
10187 | declaration imports depend on the created type in determine_prefix. */ | |
10188 | ||
10189 | static struct type * | |
10190 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
10191 | { | |
10192 | struct objfile *objfile = cu->objfile; | |
10193 | char *module_name; | |
10194 | struct type *type; | |
10195 | ||
10196 | module_name = dwarf2_name (die, cu); | |
10197 | if (!module_name) | |
3e43a32a MS |
10198 | complaint (&symfile_complaints, |
10199 | _("DW_TAG_module has no name, offset 0x%x"), | |
b64f50a1 | 10200 | die->offset.sect_off); |
f55ee35c JK |
10201 | type = init_type (TYPE_CODE_MODULE, 0, 0, module_name, objfile); |
10202 | ||
10203 | /* determine_prefix uses TYPE_TAG_NAME. */ | |
10204 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
10205 | ||
10206 | return set_die_type (die, type, cu); | |
10207 | } | |
10208 | ||
5d7cb8df JK |
10209 | /* Read a Fortran module. */ |
10210 | ||
10211 | static void | |
10212 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
10213 | { | |
10214 | struct die_info *child_die = die->child; | |
10215 | ||
5d7cb8df JK |
10216 | while (child_die && child_die->tag) |
10217 | { | |
10218 | process_die (child_die, cu); | |
10219 | child_die = sibling_die (child_die); | |
10220 | } | |
10221 | } | |
10222 | ||
38d518c9 EZ |
10223 | /* Return the name of the namespace represented by DIE. Set |
10224 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
10225 | namespace. */ | |
10226 | ||
10227 | static const char * | |
e142c38c | 10228 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
10229 | { |
10230 | struct die_info *current_die; | |
10231 | const char *name = NULL; | |
10232 | ||
10233 | /* Loop through the extensions until we find a name. */ | |
10234 | ||
10235 | for (current_die = die; | |
10236 | current_die != NULL; | |
f2f0e013 | 10237 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 10238 | { |
e142c38c | 10239 | name = dwarf2_name (current_die, cu); |
38d518c9 EZ |
10240 | if (name != NULL) |
10241 | break; | |
10242 | } | |
10243 | ||
10244 | /* Is it an anonymous namespace? */ | |
10245 | ||
10246 | *is_anonymous = (name == NULL); | |
10247 | if (*is_anonymous) | |
2b1dbab0 | 10248 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
10249 | |
10250 | return name; | |
d9fa45fe DC |
10251 | } |
10252 | ||
c906108c SS |
10253 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
10254 | the user defined type vector. */ | |
10255 | ||
f792889a | 10256 | static struct type * |
e7c27a73 | 10257 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10258 | { |
5e2b427d | 10259 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); |
e7c27a73 | 10260 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 10261 | struct type *type; |
8b2dbe47 KB |
10262 | struct attribute *attr_byte_size; |
10263 | struct attribute *attr_address_class; | |
10264 | int byte_size, addr_class; | |
7e314c57 JK |
10265 | struct type *target_type; |
10266 | ||
10267 | target_type = die_type (die, cu); | |
c906108c | 10268 | |
7e314c57 JK |
10269 | /* The die_type call above may have already set the type for this DIE. */ |
10270 | type = get_die_type (die, cu); | |
10271 | if (type) | |
10272 | return type; | |
10273 | ||
10274 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 10275 | |
e142c38c | 10276 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
10277 | if (attr_byte_size) |
10278 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 10279 | else |
8b2dbe47 KB |
10280 | byte_size = cu_header->addr_size; |
10281 | ||
e142c38c | 10282 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
10283 | if (attr_address_class) |
10284 | addr_class = DW_UNSND (attr_address_class); | |
10285 | else | |
10286 | addr_class = DW_ADDR_none; | |
10287 | ||
10288 | /* If the pointer size or address class is different than the | |
10289 | default, create a type variant marked as such and set the | |
10290 | length accordingly. */ | |
10291 | if (TYPE_LENGTH (type) != byte_size || addr_class != DW_ADDR_none) | |
c906108c | 10292 | { |
5e2b427d | 10293 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
10294 | { |
10295 | int type_flags; | |
10296 | ||
849957d9 | 10297 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 10298 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
10299 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
10300 | == 0); | |
8b2dbe47 KB |
10301 | type = make_type_with_address_space (type, type_flags); |
10302 | } | |
10303 | else if (TYPE_LENGTH (type) != byte_size) | |
10304 | { | |
3e43a32a MS |
10305 | complaint (&symfile_complaints, |
10306 | _("invalid pointer size %d"), byte_size); | |
8b2dbe47 | 10307 | } |
6e70227d | 10308 | else |
9a619af0 MS |
10309 | { |
10310 | /* Should we also complain about unhandled address classes? */ | |
10311 | } | |
c906108c | 10312 | } |
8b2dbe47 KB |
10313 | |
10314 | TYPE_LENGTH (type) = byte_size; | |
f792889a | 10315 | return set_die_type (die, type, cu); |
c906108c SS |
10316 | } |
10317 | ||
10318 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
10319 | the user defined type vector. */ | |
10320 | ||
f792889a | 10321 | static struct type * |
e7c27a73 | 10322 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
10323 | { |
10324 | struct type *type; | |
10325 | struct type *to_type; | |
10326 | struct type *domain; | |
10327 | ||
e7c27a73 DJ |
10328 | to_type = die_type (die, cu); |
10329 | domain = die_containing_type (die, cu); | |
0d5de010 | 10330 | |
7e314c57 JK |
10331 | /* The calls above may have already set the type for this DIE. */ |
10332 | type = get_die_type (die, cu); | |
10333 | if (type) | |
10334 | return type; | |
10335 | ||
0d5de010 DJ |
10336 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) |
10337 | type = lookup_methodptr_type (to_type); | |
10338 | else | |
10339 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 10340 | |
f792889a | 10341 | return set_die_type (die, type, cu); |
c906108c SS |
10342 | } |
10343 | ||
10344 | /* Extract all information from a DW_TAG_reference_type DIE and add to | |
10345 | the user defined type vector. */ | |
10346 | ||
f792889a | 10347 | static struct type * |
e7c27a73 | 10348 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10349 | { |
e7c27a73 | 10350 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 10351 | struct type *type, *target_type; |
c906108c SS |
10352 | struct attribute *attr; |
10353 | ||
7e314c57 JK |
10354 | target_type = die_type (die, cu); |
10355 | ||
10356 | /* The die_type call above may have already set the type for this DIE. */ | |
10357 | type = get_die_type (die, cu); | |
10358 | if (type) | |
10359 | return type; | |
10360 | ||
10361 | type = lookup_reference_type (target_type); | |
e142c38c | 10362 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
10363 | if (attr) |
10364 | { | |
10365 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
10366 | } | |
10367 | else | |
10368 | { | |
107d2387 | 10369 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 10370 | } |
f792889a | 10371 | return set_die_type (die, type, cu); |
c906108c SS |
10372 | } |
10373 | ||
f792889a | 10374 | static struct type * |
e7c27a73 | 10375 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10376 | { |
f792889a | 10377 | struct type *base_type, *cv_type; |
c906108c | 10378 | |
e7c27a73 | 10379 | base_type = die_type (die, cu); |
7e314c57 JK |
10380 | |
10381 | /* The die_type call above may have already set the type for this DIE. */ | |
10382 | cv_type = get_die_type (die, cu); | |
10383 | if (cv_type) | |
10384 | return cv_type; | |
10385 | ||
2f608a3a KW |
10386 | /* In case the const qualifier is applied to an array type, the element type |
10387 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
10388 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
10389 | { | |
10390 | struct type *el_type, *inner_array; | |
10391 | ||
10392 | base_type = copy_type (base_type); | |
10393 | inner_array = base_type; | |
10394 | ||
10395 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) | |
10396 | { | |
10397 | TYPE_TARGET_TYPE (inner_array) = | |
10398 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
10399 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
10400 | } | |
10401 | ||
10402 | el_type = TYPE_TARGET_TYPE (inner_array); | |
10403 | TYPE_TARGET_TYPE (inner_array) = | |
10404 | make_cv_type (1, TYPE_VOLATILE (el_type), el_type, NULL); | |
10405 | ||
10406 | return set_die_type (die, base_type, cu); | |
10407 | } | |
10408 | ||
f792889a DJ |
10409 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
10410 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
10411 | } |
10412 | ||
f792889a | 10413 | static struct type * |
e7c27a73 | 10414 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10415 | { |
f792889a | 10416 | struct type *base_type, *cv_type; |
c906108c | 10417 | |
e7c27a73 | 10418 | base_type = die_type (die, cu); |
7e314c57 JK |
10419 | |
10420 | /* The die_type call above may have already set the type for this DIE. */ | |
10421 | cv_type = get_die_type (die, cu); | |
10422 | if (cv_type) | |
10423 | return cv_type; | |
10424 | ||
f792889a DJ |
10425 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
10426 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
10427 | } |
10428 | ||
10429 | /* Extract all information from a DW_TAG_string_type DIE and add to | |
10430 | the user defined type vector. It isn't really a user defined type, | |
10431 | but it behaves like one, with other DIE's using an AT_user_def_type | |
10432 | attribute to reference it. */ | |
10433 | ||
f792889a | 10434 | static struct type * |
e7c27a73 | 10435 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10436 | { |
e7c27a73 | 10437 | struct objfile *objfile = cu->objfile; |
3b7538c0 | 10438 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
10439 | struct type *type, *range_type, *index_type, *char_type; |
10440 | struct attribute *attr; | |
10441 | unsigned int length; | |
10442 | ||
e142c38c | 10443 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
10444 | if (attr) |
10445 | { | |
10446 | length = DW_UNSND (attr); | |
10447 | } | |
10448 | else | |
10449 | { | |
0963b4bd | 10450 | /* Check for the DW_AT_byte_size attribute. */ |
e142c38c | 10451 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
10452 | if (attr) |
10453 | { | |
10454 | length = DW_UNSND (attr); | |
10455 | } | |
10456 | else | |
10457 | { | |
10458 | length = 1; | |
10459 | } | |
c906108c | 10460 | } |
6ccb9162 | 10461 | |
46bf5051 | 10462 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 10463 | range_type = create_range_type (NULL, index_type, 1, length); |
3b7538c0 UW |
10464 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
10465 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 10466 | |
f792889a | 10467 | return set_die_type (die, type, cu); |
c906108c SS |
10468 | } |
10469 | ||
10470 | /* Handle DIES due to C code like: | |
10471 | ||
10472 | struct foo | |
c5aa993b JM |
10473 | { |
10474 | int (*funcp)(int a, long l); | |
10475 | int b; | |
10476 | }; | |
c906108c | 10477 | |
0963b4bd | 10478 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 10479 | |
f792889a | 10480 | static struct type * |
e7c27a73 | 10481 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10482 | { |
bb5ed363 | 10483 | struct objfile *objfile = cu->objfile; |
0963b4bd MS |
10484 | struct type *type; /* Type that this function returns. */ |
10485 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
10486 | struct attribute *attr; |
10487 | ||
e7c27a73 | 10488 | type = die_type (die, cu); |
7e314c57 JK |
10489 | |
10490 | /* The die_type call above may have already set the type for this DIE. */ | |
10491 | ftype = get_die_type (die, cu); | |
10492 | if (ftype) | |
10493 | return ftype; | |
10494 | ||
0c8b41f1 | 10495 | ftype = lookup_function_type (type); |
c906108c | 10496 | |
5b8101ae | 10497 | /* All functions in C++, Pascal and Java have prototypes. */ |
e142c38c | 10498 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); |
c906108c | 10499 | if ((attr && (DW_UNSND (attr) != 0)) |
987504bb | 10500 | || cu->language == language_cplus |
5b8101ae PM |
10501 | || cu->language == language_java |
10502 | || cu->language == language_pascal) | |
876cecd0 | 10503 | TYPE_PROTOTYPED (ftype) = 1; |
a6c727b2 DJ |
10504 | else if (producer_is_realview (cu->producer)) |
10505 | /* RealView does not emit DW_AT_prototyped. We can not | |
10506 | distinguish prototyped and unprototyped functions; default to | |
10507 | prototyped, since that is more common in modern code (and | |
10508 | RealView warns about unprototyped functions). */ | |
10509 | TYPE_PROTOTYPED (ftype) = 1; | |
c906108c | 10510 | |
c055b101 CV |
10511 | /* Store the calling convention in the type if it's available in |
10512 | the subroutine die. Otherwise set the calling convention to | |
10513 | the default value DW_CC_normal. */ | |
10514 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
54fcddd0 UW |
10515 | if (attr) |
10516 | TYPE_CALLING_CONVENTION (ftype) = DW_UNSND (attr); | |
10517 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) | |
10518 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
10519 | else | |
10520 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 GM |
10521 | |
10522 | /* We need to add the subroutine type to the die immediately so | |
10523 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 10524 | declared as the same subroutine type. */ |
76c10ea2 | 10525 | set_die_type (die, ftype, cu); |
6e70227d | 10526 | |
639d11d3 | 10527 | if (die->child != NULL) |
c906108c | 10528 | { |
bb5ed363 | 10529 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 10530 | struct die_info *child_die; |
8072405b | 10531 | int nparams, iparams; |
c906108c SS |
10532 | |
10533 | /* Count the number of parameters. | |
10534 | FIXME: GDB currently ignores vararg functions, but knows about | |
10535 | vararg member functions. */ | |
8072405b | 10536 | nparams = 0; |
639d11d3 | 10537 | child_die = die->child; |
c906108c SS |
10538 | while (child_die && child_die->tag) |
10539 | { | |
10540 | if (child_die->tag == DW_TAG_formal_parameter) | |
10541 | nparams++; | |
10542 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 10543 | TYPE_VARARGS (ftype) = 1; |
c906108c SS |
10544 | child_die = sibling_die (child_die); |
10545 | } | |
10546 | ||
10547 | /* Allocate storage for parameters and fill them in. */ | |
10548 | TYPE_NFIELDS (ftype) = nparams; | |
10549 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 10550 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 10551 | |
8072405b JK |
10552 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
10553 | even if we error out during the parameters reading below. */ | |
10554 | for (iparams = 0; iparams < nparams; iparams++) | |
10555 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
10556 | ||
10557 | iparams = 0; | |
639d11d3 | 10558 | child_die = die->child; |
c906108c SS |
10559 | while (child_die && child_die->tag) |
10560 | { | |
10561 | if (child_die->tag == DW_TAG_formal_parameter) | |
10562 | { | |
3ce3b1ba PA |
10563 | struct type *arg_type; |
10564 | ||
10565 | /* DWARF version 2 has no clean way to discern C++ | |
10566 | static and non-static member functions. G++ helps | |
10567 | GDB by marking the first parameter for non-static | |
10568 | member functions (which is the this pointer) as | |
10569 | artificial. We pass this information to | |
10570 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
10571 | ||
10572 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
10573 | 4.5 does not yet generate. */ | |
e142c38c | 10574 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
10575 | if (attr) |
10576 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
10577 | else | |
418835cc KS |
10578 | { |
10579 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; | |
10580 | ||
10581 | /* GCC/43521: In java, the formal parameter | |
10582 | "this" is sometimes not marked with DW_AT_artificial. */ | |
10583 | if (cu->language == language_java) | |
10584 | { | |
10585 | const char *name = dwarf2_name (child_die, cu); | |
9a619af0 | 10586 | |
418835cc KS |
10587 | if (name && !strcmp (name, "this")) |
10588 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 1; | |
10589 | } | |
10590 | } | |
3ce3b1ba PA |
10591 | arg_type = die_type (child_die, cu); |
10592 | ||
10593 | /* RealView does not mark THIS as const, which the testsuite | |
10594 | expects. GCC marks THIS as const in method definitions, | |
10595 | but not in the class specifications (GCC PR 43053). */ | |
10596 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
10597 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
10598 | { | |
10599 | int is_this = 0; | |
10600 | struct dwarf2_cu *arg_cu = cu; | |
10601 | const char *name = dwarf2_name (child_die, cu); | |
10602 | ||
10603 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
10604 | if (attr) | |
10605 | { | |
10606 | /* If the compiler emits this, use it. */ | |
10607 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
10608 | is_this = 1; | |
10609 | } | |
10610 | else if (name && strcmp (name, "this") == 0) | |
10611 | /* Function definitions will have the argument names. */ | |
10612 | is_this = 1; | |
10613 | else if (name == NULL && iparams == 0) | |
10614 | /* Declarations may not have the names, so like | |
10615 | elsewhere in GDB, assume an artificial first | |
10616 | argument is "this". */ | |
10617 | is_this = 1; | |
10618 | ||
10619 | if (is_this) | |
10620 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
10621 | arg_type, 0); | |
10622 | } | |
10623 | ||
10624 | TYPE_FIELD_TYPE (ftype, iparams) = arg_type; | |
c906108c SS |
10625 | iparams++; |
10626 | } | |
10627 | child_die = sibling_die (child_die); | |
10628 | } | |
10629 | } | |
10630 | ||
76c10ea2 | 10631 | return ftype; |
c906108c SS |
10632 | } |
10633 | ||
f792889a | 10634 | static struct type * |
e7c27a73 | 10635 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10636 | { |
e7c27a73 | 10637 | struct objfile *objfile = cu->objfile; |
0114d602 | 10638 | const char *name = NULL; |
3c8e0968 | 10639 | struct type *this_type, *target_type; |
c906108c | 10640 | |
94af9270 | 10641 | name = dwarf2_full_name (NULL, die, cu); |
f792889a | 10642 | this_type = init_type (TYPE_CODE_TYPEDEF, 0, |
0114d602 DJ |
10643 | TYPE_FLAG_TARGET_STUB, NULL, objfile); |
10644 | TYPE_NAME (this_type) = (char *) name; | |
f792889a | 10645 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
10646 | target_type = die_type (die, cu); |
10647 | if (target_type != this_type) | |
10648 | TYPE_TARGET_TYPE (this_type) = target_type; | |
10649 | else | |
10650 | { | |
10651 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
10652 | spec and cause infinite loops in GDB. */ | |
10653 | complaint (&symfile_complaints, | |
10654 | _("Self-referential DW_TAG_typedef " | |
10655 | "- DIE at 0x%x [in module %s]"), | |
b64f50a1 | 10656 | die->offset.sect_off, objfile->name); |
3c8e0968 DE |
10657 | TYPE_TARGET_TYPE (this_type) = NULL; |
10658 | } | |
f792889a | 10659 | return this_type; |
c906108c SS |
10660 | } |
10661 | ||
10662 | /* Find a representation of a given base type and install | |
10663 | it in the TYPE field of the die. */ | |
10664 | ||
f792889a | 10665 | static struct type * |
e7c27a73 | 10666 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10667 | { |
e7c27a73 | 10668 | struct objfile *objfile = cu->objfile; |
c906108c SS |
10669 | struct type *type; |
10670 | struct attribute *attr; | |
10671 | int encoding = 0, size = 0; | |
39cbfefa | 10672 | char *name; |
6ccb9162 UW |
10673 | enum type_code code = TYPE_CODE_INT; |
10674 | int type_flags = 0; | |
10675 | struct type *target_type = NULL; | |
c906108c | 10676 | |
e142c38c | 10677 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
10678 | if (attr) |
10679 | { | |
10680 | encoding = DW_UNSND (attr); | |
10681 | } | |
e142c38c | 10682 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
10683 | if (attr) |
10684 | { | |
10685 | size = DW_UNSND (attr); | |
10686 | } | |
39cbfefa | 10687 | name = dwarf2_name (die, cu); |
6ccb9162 | 10688 | if (!name) |
c906108c | 10689 | { |
6ccb9162 UW |
10690 | complaint (&symfile_complaints, |
10691 | _("DW_AT_name missing from DW_TAG_base_type")); | |
c906108c | 10692 | } |
6ccb9162 UW |
10693 | |
10694 | switch (encoding) | |
c906108c | 10695 | { |
6ccb9162 UW |
10696 | case DW_ATE_address: |
10697 | /* Turn DW_ATE_address into a void * pointer. */ | |
10698 | code = TYPE_CODE_PTR; | |
10699 | type_flags |= TYPE_FLAG_UNSIGNED; | |
10700 | target_type = init_type (TYPE_CODE_VOID, 1, 0, NULL, objfile); | |
10701 | break; | |
10702 | case DW_ATE_boolean: | |
10703 | code = TYPE_CODE_BOOL; | |
10704 | type_flags |= TYPE_FLAG_UNSIGNED; | |
10705 | break; | |
10706 | case DW_ATE_complex_float: | |
10707 | code = TYPE_CODE_COMPLEX; | |
10708 | target_type = init_type (TYPE_CODE_FLT, size / 2, 0, NULL, objfile); | |
10709 | break; | |
10710 | case DW_ATE_decimal_float: | |
10711 | code = TYPE_CODE_DECFLOAT; | |
10712 | break; | |
10713 | case DW_ATE_float: | |
10714 | code = TYPE_CODE_FLT; | |
10715 | break; | |
10716 | case DW_ATE_signed: | |
10717 | break; | |
10718 | case DW_ATE_unsigned: | |
10719 | type_flags |= TYPE_FLAG_UNSIGNED; | |
3b2b8fea TT |
10720 | if (cu->language == language_fortran |
10721 | && name | |
10722 | && strncmp (name, "character(", sizeof ("character(") - 1) == 0) | |
10723 | code = TYPE_CODE_CHAR; | |
6ccb9162 UW |
10724 | break; |
10725 | case DW_ATE_signed_char: | |
6e70227d | 10726 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
10727 | || cu->language == language_pascal |
10728 | || cu->language == language_fortran) | |
6ccb9162 UW |
10729 | code = TYPE_CODE_CHAR; |
10730 | break; | |
10731 | case DW_ATE_unsigned_char: | |
868a0084 | 10732 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
10733 | || cu->language == language_pascal |
10734 | || cu->language == language_fortran) | |
6ccb9162 UW |
10735 | code = TYPE_CODE_CHAR; |
10736 | type_flags |= TYPE_FLAG_UNSIGNED; | |
10737 | break; | |
75079b2b TT |
10738 | case DW_ATE_UTF: |
10739 | /* We just treat this as an integer and then recognize the | |
10740 | type by name elsewhere. */ | |
10741 | break; | |
10742 | ||
6ccb9162 UW |
10743 | default: |
10744 | complaint (&symfile_complaints, _("unsupported DW_AT_encoding: '%s'"), | |
10745 | dwarf_type_encoding_name (encoding)); | |
10746 | break; | |
c906108c | 10747 | } |
6ccb9162 | 10748 | |
0114d602 DJ |
10749 | type = init_type (code, size, type_flags, NULL, objfile); |
10750 | TYPE_NAME (type) = name; | |
6ccb9162 UW |
10751 | TYPE_TARGET_TYPE (type) = target_type; |
10752 | ||
0114d602 | 10753 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 10754 | TYPE_NOSIGN (type) = 1; |
0114d602 | 10755 | |
f792889a | 10756 | return set_die_type (die, type, cu); |
c906108c SS |
10757 | } |
10758 | ||
a02abb62 JB |
10759 | /* Read the given DW_AT_subrange DIE. */ |
10760 | ||
f792889a | 10761 | static struct type * |
a02abb62 JB |
10762 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
10763 | { | |
10764 | struct type *base_type; | |
10765 | struct type *range_type; | |
10766 | struct attribute *attr; | |
4fae6e18 JK |
10767 | LONGEST low, high; |
10768 | int low_default_is_valid; | |
39cbfefa | 10769 | char *name; |
43bbcdc2 | 10770 | LONGEST negative_mask; |
e77813c8 | 10771 | |
a02abb62 | 10772 | base_type = die_type (die, cu); |
953ac07e JK |
10773 | /* Preserve BASE_TYPE's original type, just set its LENGTH. */ |
10774 | check_typedef (base_type); | |
a02abb62 | 10775 | |
7e314c57 JK |
10776 | /* The die_type call above may have already set the type for this DIE. */ |
10777 | range_type = get_die_type (die, cu); | |
10778 | if (range_type) | |
10779 | return range_type; | |
10780 | ||
4fae6e18 JK |
10781 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
10782 | omitting DW_AT_lower_bound. */ | |
10783 | switch (cu->language) | |
6e70227d | 10784 | { |
4fae6e18 JK |
10785 | case language_c: |
10786 | case language_cplus: | |
10787 | low = 0; | |
10788 | low_default_is_valid = 1; | |
10789 | break; | |
10790 | case language_fortran: | |
10791 | low = 1; | |
10792 | low_default_is_valid = 1; | |
10793 | break; | |
10794 | case language_d: | |
10795 | case language_java: | |
10796 | case language_objc: | |
10797 | low = 0; | |
10798 | low_default_is_valid = (cu->header.version >= 4); | |
10799 | break; | |
10800 | case language_ada: | |
10801 | case language_m2: | |
10802 | case language_pascal: | |
a02abb62 | 10803 | low = 1; |
4fae6e18 JK |
10804 | low_default_is_valid = (cu->header.version >= 4); |
10805 | break; | |
10806 | default: | |
10807 | low = 0; | |
10808 | low_default_is_valid = 0; | |
10809 | break; | |
a02abb62 JB |
10810 | } |
10811 | ||
dd5e6932 DJ |
10812 | /* FIXME: For variable sized arrays either of these could be |
10813 | a variable rather than a constant value. We'll allow it, | |
10814 | but we don't know how to handle it. */ | |
e142c38c | 10815 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 | 10816 | if (attr) |
4fae6e18 JK |
10817 | low = dwarf2_get_attr_constant_value (attr, low); |
10818 | else if (!low_default_is_valid) | |
10819 | complaint (&symfile_complaints, _("Missing DW_AT_lower_bound " | |
10820 | "- DIE at 0x%x [in module %s]"), | |
10821 | die->offset.sect_off, cu->objfile->name); | |
a02abb62 | 10822 | |
e142c38c | 10823 | attr = dwarf2_attr (die, DW_AT_upper_bound, cu); |
a02abb62 | 10824 | if (attr) |
6e70227d | 10825 | { |
d48323d8 | 10826 | if (attr_form_is_block (attr) || is_ref_attr (attr)) |
a02abb62 JB |
10827 | { |
10828 | /* GCC encodes arrays with unspecified or dynamic length | |
e77813c8 | 10829 | with a DW_FORM_block1 attribute or a reference attribute. |
a02abb62 JB |
10830 | FIXME: GDB does not yet know how to handle dynamic |
10831 | arrays properly, treat them as arrays with unspecified | |
10832 | length for now. | |
10833 | ||
10834 | FIXME: jimb/2003-09-22: GDB does not really know | |
10835 | how to handle arrays of unspecified length | |
10836 | either; we just represent them as zero-length | |
10837 | arrays. Choose an appropriate upper bound given | |
10838 | the lower bound we've computed above. */ | |
10839 | high = low - 1; | |
10840 | } | |
10841 | else | |
10842 | high = dwarf2_get_attr_constant_value (attr, 1); | |
10843 | } | |
e77813c8 PM |
10844 | else |
10845 | { | |
10846 | attr = dwarf2_attr (die, DW_AT_count, cu); | |
10847 | if (attr) | |
10848 | { | |
10849 | int count = dwarf2_get_attr_constant_value (attr, 1); | |
10850 | high = low + count - 1; | |
10851 | } | |
c2ff108b JK |
10852 | else |
10853 | { | |
10854 | /* Unspecified array length. */ | |
10855 | high = low - 1; | |
10856 | } | |
e77813c8 PM |
10857 | } |
10858 | ||
10859 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
10860 | without specifying a base type. | |
10861 | In that case, the base type must be set to the type of | |
10862 | the lower bound, upper bound or count, in that order, if any of these | |
10863 | three attributes references an object that has a type. | |
10864 | If no base type is found, the Dwarf-2 specifications say that | |
10865 | a signed integer type of size equal to the size of an address should | |
10866 | be used. | |
10867 | For the following C code: `extern char gdb_int [];' | |
10868 | GCC produces an empty range DIE. | |
10869 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
0963b4bd | 10870 | high bound or count are not yet handled by this code. */ |
e77813c8 PM |
10871 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) |
10872 | { | |
10873 | struct objfile *objfile = cu->objfile; | |
10874 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
10875 | int addr_size = gdbarch_addr_bit (gdbarch) /8; | |
10876 | struct type *int_type = objfile_type (objfile)->builtin_int; | |
10877 | ||
10878 | /* Test "int", "long int", and "long long int" objfile types, | |
10879 | and select the first one having a size above or equal to the | |
10880 | architecture address size. */ | |
10881 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
10882 | base_type = int_type; | |
10883 | else | |
10884 | { | |
10885 | int_type = objfile_type (objfile)->builtin_long; | |
10886 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
10887 | base_type = int_type; | |
10888 | else | |
10889 | { | |
10890 | int_type = objfile_type (objfile)->builtin_long_long; | |
10891 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
10892 | base_type = int_type; | |
10893 | } | |
10894 | } | |
10895 | } | |
a02abb62 | 10896 | |
6e70227d | 10897 | negative_mask = |
43bbcdc2 PH |
10898 | (LONGEST) -1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1); |
10899 | if (!TYPE_UNSIGNED (base_type) && (low & negative_mask)) | |
10900 | low |= negative_mask; | |
10901 | if (!TYPE_UNSIGNED (base_type) && (high & negative_mask)) | |
10902 | high |= negative_mask; | |
10903 | ||
a02abb62 JB |
10904 | range_type = create_range_type (NULL, base_type, low, high); |
10905 | ||
bbb0eef6 JK |
10906 | /* Mark arrays with dynamic length at least as an array of unspecified |
10907 | length. GDB could check the boundary but before it gets implemented at | |
10908 | least allow accessing the array elements. */ | |
d48323d8 | 10909 | if (attr && attr_form_is_block (attr)) |
bbb0eef6 JK |
10910 | TYPE_HIGH_BOUND_UNDEFINED (range_type) = 1; |
10911 | ||
c2ff108b JK |
10912 | /* Ada expects an empty array on no boundary attributes. */ |
10913 | if (attr == NULL && cu->language != language_ada) | |
10914 | TYPE_HIGH_BOUND_UNDEFINED (range_type) = 1; | |
10915 | ||
39cbfefa DJ |
10916 | name = dwarf2_name (die, cu); |
10917 | if (name) | |
10918 | TYPE_NAME (range_type) = name; | |
6e70227d | 10919 | |
e142c38c | 10920 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
10921 | if (attr) |
10922 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
10923 | ||
7e314c57 JK |
10924 | set_die_type (die, range_type, cu); |
10925 | ||
10926 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
10927 | set_descriptive_type (range_type, die, cu); |
10928 | ||
7e314c57 | 10929 | return range_type; |
a02abb62 | 10930 | } |
6e70227d | 10931 | |
f792889a | 10932 | static struct type * |
81a17f79 JB |
10933 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
10934 | { | |
10935 | struct type *type; | |
81a17f79 | 10936 | |
81a17f79 JB |
10937 | /* For now, we only support the C meaning of an unspecified type: void. */ |
10938 | ||
0114d602 DJ |
10939 | type = init_type (TYPE_CODE_VOID, 0, 0, NULL, cu->objfile); |
10940 | TYPE_NAME (type) = dwarf2_name (die, cu); | |
81a17f79 | 10941 | |
f792889a | 10942 | return set_die_type (die, type, cu); |
81a17f79 | 10943 | } |
a02abb62 | 10944 | |
639d11d3 DC |
10945 | /* Read a single die and all its descendents. Set the die's sibling |
10946 | field to NULL; set other fields in the die correctly, and set all | |
10947 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
10948 | location of the info_ptr after reading all of those dies. PARENT | |
10949 | is the parent of the die in question. */ | |
10950 | ||
10951 | static struct die_info * | |
dee91e82 DE |
10952 | read_die_and_children (const struct die_reader_specs *reader, |
10953 | gdb_byte *info_ptr, | |
10954 | gdb_byte **new_info_ptr, | |
10955 | struct die_info *parent) | |
639d11d3 DC |
10956 | { |
10957 | struct die_info *die; | |
fe1b8b76 | 10958 | gdb_byte *cur_ptr; |
639d11d3 DC |
10959 | int has_children; |
10960 | ||
93311388 | 10961 | cur_ptr = read_full_die (reader, &die, info_ptr, &has_children); |
1d325ec1 DJ |
10962 | if (die == NULL) |
10963 | { | |
10964 | *new_info_ptr = cur_ptr; | |
10965 | return NULL; | |
10966 | } | |
93311388 | 10967 | store_in_ref_table (die, reader->cu); |
639d11d3 DC |
10968 | |
10969 | if (has_children) | |
348e048f | 10970 | die->child = read_die_and_siblings (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
10971 | else |
10972 | { | |
10973 | die->child = NULL; | |
10974 | *new_info_ptr = cur_ptr; | |
10975 | } | |
10976 | ||
10977 | die->sibling = NULL; | |
10978 | die->parent = parent; | |
10979 | return die; | |
10980 | } | |
10981 | ||
10982 | /* Read a die, all of its descendents, and all of its siblings; set | |
10983 | all of the fields of all of the dies correctly. Arguments are as | |
10984 | in read_die_and_children. */ | |
10985 | ||
10986 | static struct die_info * | |
93311388 DE |
10987 | read_die_and_siblings (const struct die_reader_specs *reader, |
10988 | gdb_byte *info_ptr, | |
fe1b8b76 | 10989 | gdb_byte **new_info_ptr, |
639d11d3 DC |
10990 | struct die_info *parent) |
10991 | { | |
10992 | struct die_info *first_die, *last_sibling; | |
fe1b8b76 | 10993 | gdb_byte *cur_ptr; |
639d11d3 | 10994 | |
c906108c | 10995 | cur_ptr = info_ptr; |
639d11d3 DC |
10996 | first_die = last_sibling = NULL; |
10997 | ||
10998 | while (1) | |
c906108c | 10999 | { |
639d11d3 | 11000 | struct die_info *die |
dee91e82 | 11001 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 11002 | |
1d325ec1 | 11003 | if (die == NULL) |
c906108c | 11004 | { |
639d11d3 DC |
11005 | *new_info_ptr = cur_ptr; |
11006 | return first_die; | |
c906108c | 11007 | } |
1d325ec1 DJ |
11008 | |
11009 | if (!first_die) | |
11010 | first_die = die; | |
c906108c | 11011 | else |
1d325ec1 DJ |
11012 | last_sibling->sibling = die; |
11013 | ||
11014 | last_sibling = die; | |
c906108c | 11015 | } |
c906108c SS |
11016 | } |
11017 | ||
3019eac3 DE |
11018 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
11019 | attributes. | |
11020 | The caller is responsible for filling in the extra attributes | |
11021 | and updating (*DIEP)->num_attrs. | |
11022 | Set DIEP to point to a newly allocated die with its information, | |
11023 | except for its child, sibling, and parent fields. | |
11024 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
93311388 DE |
11025 | |
11026 | static gdb_byte * | |
3019eac3 DE |
11027 | read_full_die_1 (const struct die_reader_specs *reader, |
11028 | struct die_info **diep, gdb_byte *info_ptr, | |
11029 | int *has_children, int num_extra_attrs) | |
93311388 | 11030 | { |
b64f50a1 JK |
11031 | unsigned int abbrev_number, bytes_read, i; |
11032 | sect_offset offset; | |
93311388 DE |
11033 | struct abbrev_info *abbrev; |
11034 | struct die_info *die; | |
11035 | struct dwarf2_cu *cu = reader->cu; | |
11036 | bfd *abfd = reader->abfd; | |
11037 | ||
b64f50a1 | 11038 | offset.sect_off = info_ptr - reader->buffer; |
93311388 DE |
11039 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
11040 | info_ptr += bytes_read; | |
11041 | if (!abbrev_number) | |
11042 | { | |
11043 | *diep = NULL; | |
11044 | *has_children = 0; | |
11045 | return info_ptr; | |
11046 | } | |
11047 | ||
433df2d4 | 11048 | abbrev = abbrev_table_lookup_abbrev (cu->abbrev_table, abbrev_number); |
93311388 | 11049 | if (!abbrev) |
348e048f DE |
11050 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
11051 | abbrev_number, | |
11052 | bfd_get_filename (abfd)); | |
11053 | ||
3019eac3 | 11054 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
93311388 DE |
11055 | die->offset = offset; |
11056 | die->tag = abbrev->tag; | |
11057 | die->abbrev = abbrev_number; | |
11058 | ||
3019eac3 DE |
11059 | /* Make the result usable. |
11060 | The caller needs to update num_attrs after adding the extra | |
11061 | attributes. */ | |
93311388 DE |
11062 | die->num_attrs = abbrev->num_attrs; |
11063 | ||
11064 | for (i = 0; i < abbrev->num_attrs; ++i) | |
dee91e82 DE |
11065 | info_ptr = read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], |
11066 | info_ptr); | |
93311388 DE |
11067 | |
11068 | *diep = die; | |
11069 | *has_children = abbrev->has_children; | |
11070 | return info_ptr; | |
11071 | } | |
11072 | ||
3019eac3 DE |
11073 | /* Read a die and all its attributes. |
11074 | Set DIEP to point to a newly allocated die with its information, | |
11075 | except for its child, sibling, and parent fields. | |
11076 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
11077 | ||
11078 | static gdb_byte * | |
11079 | read_full_die (const struct die_reader_specs *reader, | |
11080 | struct die_info **diep, gdb_byte *info_ptr, | |
11081 | int *has_children) | |
11082 | { | |
11083 | return read_full_die_1 (reader, diep, info_ptr, has_children, 0); | |
11084 | } | |
433df2d4 DE |
11085 | \f |
11086 | /* Abbreviation tables. | |
3019eac3 | 11087 | |
433df2d4 | 11088 | In DWARF version 2, the description of the debugging information is |
c906108c SS |
11089 | stored in a separate .debug_abbrev section. Before we read any |
11090 | dies from a section we read in all abbreviations and install them | |
433df2d4 DE |
11091 | in a hash table. */ |
11092 | ||
11093 | /* Allocate space for a struct abbrev_info object in ABBREV_TABLE. */ | |
11094 | ||
11095 | static struct abbrev_info * | |
11096 | abbrev_table_alloc_abbrev (struct abbrev_table *abbrev_table) | |
11097 | { | |
11098 | struct abbrev_info *abbrev; | |
11099 | ||
11100 | abbrev = (struct abbrev_info *) | |
11101 | obstack_alloc (&abbrev_table->abbrev_obstack, sizeof (struct abbrev_info)); | |
11102 | memset (abbrev, 0, sizeof (struct abbrev_info)); | |
11103 | return abbrev; | |
11104 | } | |
11105 | ||
11106 | /* Add an abbreviation to the table. */ | |
c906108c SS |
11107 | |
11108 | static void | |
433df2d4 DE |
11109 | abbrev_table_add_abbrev (struct abbrev_table *abbrev_table, |
11110 | unsigned int abbrev_number, | |
11111 | struct abbrev_info *abbrev) | |
11112 | { | |
11113 | unsigned int hash_number; | |
11114 | ||
11115 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
11116 | abbrev->next = abbrev_table->abbrevs[hash_number]; | |
11117 | abbrev_table->abbrevs[hash_number] = abbrev; | |
11118 | } | |
dee91e82 | 11119 | |
433df2d4 DE |
11120 | /* Look up an abbrev in the table. |
11121 | Returns NULL if the abbrev is not found. */ | |
11122 | ||
11123 | static struct abbrev_info * | |
11124 | abbrev_table_lookup_abbrev (const struct abbrev_table *abbrev_table, | |
11125 | unsigned int abbrev_number) | |
c906108c | 11126 | { |
433df2d4 DE |
11127 | unsigned int hash_number; |
11128 | struct abbrev_info *abbrev; | |
11129 | ||
11130 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
11131 | abbrev = abbrev_table->abbrevs[hash_number]; | |
11132 | ||
11133 | while (abbrev) | |
11134 | { | |
11135 | if (abbrev->number == abbrev_number) | |
11136 | return abbrev; | |
11137 | abbrev = abbrev->next; | |
11138 | } | |
11139 | return NULL; | |
11140 | } | |
11141 | ||
11142 | /* Read in an abbrev table. */ | |
11143 | ||
11144 | static struct abbrev_table * | |
11145 | abbrev_table_read_table (struct dwarf2_section_info *section, | |
11146 | sect_offset offset) | |
11147 | { | |
11148 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
11149 | bfd *abfd = section->asection->owner; | |
11150 | struct abbrev_table *abbrev_table; | |
fe1b8b76 | 11151 | gdb_byte *abbrev_ptr; |
c906108c SS |
11152 | struct abbrev_info *cur_abbrev; |
11153 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
433df2d4 | 11154 | unsigned int abbrev_form; |
f3dd6933 DJ |
11155 | struct attr_abbrev *cur_attrs; |
11156 | unsigned int allocated_attrs; | |
c906108c | 11157 | |
433df2d4 DE |
11158 | abbrev_table = XMALLOC (struct abbrev_table); |
11159 | obstack_init (&abbrev_table->abbrev_obstack); | |
11160 | abbrev_table->abbrevs = obstack_alloc (&abbrev_table->abbrev_obstack, | |
11161 | (ABBREV_HASH_SIZE | |
11162 | * sizeof (struct abbrev_info *))); | |
11163 | memset (abbrev_table->abbrevs, 0, | |
11164 | ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); | |
c906108c | 11165 | |
433df2d4 DE |
11166 | dwarf2_read_section (objfile, section); |
11167 | abbrev_ptr = section->buffer + offset.sect_off; | |
c906108c SS |
11168 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
11169 | abbrev_ptr += bytes_read; | |
11170 | ||
f3dd6933 DJ |
11171 | allocated_attrs = ATTR_ALLOC_CHUNK; |
11172 | cur_attrs = xmalloc (allocated_attrs * sizeof (struct attr_abbrev)); | |
6e70227d | 11173 | |
0963b4bd | 11174 | /* Loop until we reach an abbrev number of 0. */ |
c906108c SS |
11175 | while (abbrev_number) |
11176 | { | |
433df2d4 | 11177 | cur_abbrev = abbrev_table_alloc_abbrev (abbrev_table); |
c906108c SS |
11178 | |
11179 | /* read in abbrev header */ | |
11180 | cur_abbrev->number = abbrev_number; | |
11181 | cur_abbrev->tag = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
11182 | abbrev_ptr += bytes_read; | |
11183 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
11184 | abbrev_ptr += 1; | |
11185 | ||
11186 | /* now read in declarations */ | |
11187 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
11188 | abbrev_ptr += bytes_read; | |
11189 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
11190 | abbrev_ptr += bytes_read; | |
11191 | while (abbrev_name) | |
11192 | { | |
f3dd6933 | 11193 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 11194 | { |
f3dd6933 DJ |
11195 | allocated_attrs += ATTR_ALLOC_CHUNK; |
11196 | cur_attrs | |
11197 | = xrealloc (cur_attrs, (allocated_attrs | |
11198 | * sizeof (struct attr_abbrev))); | |
c906108c | 11199 | } |
ae038cb0 | 11200 | |
f3dd6933 DJ |
11201 | cur_attrs[cur_abbrev->num_attrs].name = abbrev_name; |
11202 | cur_attrs[cur_abbrev->num_attrs++].form = abbrev_form; | |
c906108c SS |
11203 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
11204 | abbrev_ptr += bytes_read; | |
11205 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
11206 | abbrev_ptr += bytes_read; | |
11207 | } | |
11208 | ||
433df2d4 | 11209 | cur_abbrev->attrs = obstack_alloc (&abbrev_table->abbrev_obstack, |
f3dd6933 DJ |
11210 | (cur_abbrev->num_attrs |
11211 | * sizeof (struct attr_abbrev))); | |
11212 | memcpy (cur_abbrev->attrs, cur_attrs, | |
11213 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
11214 | ||
433df2d4 | 11215 | abbrev_table_add_abbrev (abbrev_table, abbrev_number, cur_abbrev); |
c906108c SS |
11216 | |
11217 | /* Get next abbreviation. | |
11218 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
11219 | always properly terminated with an abbrev number of 0. |
11220 | Exit loop if we encounter an abbreviation which we have | |
11221 | already read (which means we are about to read the abbreviations | |
11222 | for the next compile unit) or if the end of the abbreviation | |
11223 | table is reached. */ | |
433df2d4 | 11224 | if ((unsigned int) (abbrev_ptr - section->buffer) >= section->size) |
c906108c SS |
11225 | break; |
11226 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
11227 | abbrev_ptr += bytes_read; | |
433df2d4 | 11228 | if (abbrev_table_lookup_abbrev (abbrev_table, abbrev_number) != NULL) |
c906108c SS |
11229 | break; |
11230 | } | |
f3dd6933 DJ |
11231 | |
11232 | xfree (cur_attrs); | |
433df2d4 | 11233 | return abbrev_table; |
c906108c SS |
11234 | } |
11235 | ||
433df2d4 | 11236 | /* Free the resources held by ABBREV_TABLE. */ |
c906108c | 11237 | |
c906108c | 11238 | static void |
433df2d4 | 11239 | abbrev_table_free (struct abbrev_table *abbrev_table) |
c906108c | 11240 | { |
433df2d4 DE |
11241 | obstack_free (&abbrev_table->abbrev_obstack, NULL); |
11242 | xfree (abbrev_table); | |
c906108c SS |
11243 | } |
11244 | ||
433df2d4 DE |
11245 | /* Read the abbrev table for CU from ABBREV_SECTION. */ |
11246 | ||
11247 | static void | |
11248 | dwarf2_read_abbrevs (struct dwarf2_cu *cu, | |
11249 | struct dwarf2_section_info *abbrev_section) | |
c906108c | 11250 | { |
433df2d4 DE |
11251 | cu->abbrev_table = |
11252 | abbrev_table_read_table (abbrev_section, cu->header.abbrev_offset); | |
11253 | } | |
c906108c | 11254 | |
433df2d4 | 11255 | /* Release the memory used by the abbrev table for a compilation unit. */ |
c906108c | 11256 | |
433df2d4 DE |
11257 | static void |
11258 | dwarf2_free_abbrev_table (void *ptr_to_cu) | |
11259 | { | |
11260 | struct dwarf2_cu *cu = ptr_to_cu; | |
c906108c | 11261 | |
433df2d4 DE |
11262 | abbrev_table_free (cu->abbrev_table); |
11263 | /* Set this to NULL so that we SEGV if we try to read it later, | |
11264 | and also because free_comp_unit verifies this is NULL. */ | |
11265 | cu->abbrev_table = NULL; | |
11266 | } | |
11267 | \f | |
72bf9492 DJ |
11268 | /* Returns nonzero if TAG represents a type that we might generate a partial |
11269 | symbol for. */ | |
11270 | ||
11271 | static int | |
11272 | is_type_tag_for_partial (int tag) | |
11273 | { | |
11274 | switch (tag) | |
11275 | { | |
11276 | #if 0 | |
11277 | /* Some types that would be reasonable to generate partial symbols for, | |
11278 | that we don't at present. */ | |
11279 | case DW_TAG_array_type: | |
11280 | case DW_TAG_file_type: | |
11281 | case DW_TAG_ptr_to_member_type: | |
11282 | case DW_TAG_set_type: | |
11283 | case DW_TAG_string_type: | |
11284 | case DW_TAG_subroutine_type: | |
11285 | #endif | |
11286 | case DW_TAG_base_type: | |
11287 | case DW_TAG_class_type: | |
680b30c7 | 11288 | case DW_TAG_interface_type: |
72bf9492 DJ |
11289 | case DW_TAG_enumeration_type: |
11290 | case DW_TAG_structure_type: | |
11291 | case DW_TAG_subrange_type: | |
11292 | case DW_TAG_typedef: | |
11293 | case DW_TAG_union_type: | |
11294 | return 1; | |
11295 | default: | |
11296 | return 0; | |
11297 | } | |
11298 | } | |
11299 | ||
11300 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
11301 | ||
11302 | static struct partial_die_info * | |
dee91e82 DE |
11303 | load_partial_dies (const struct die_reader_specs *reader, |
11304 | gdb_byte *info_ptr, int building_psymtab) | |
72bf9492 | 11305 | { |
dee91e82 | 11306 | struct dwarf2_cu *cu = reader->cu; |
bb5ed363 | 11307 | struct objfile *objfile = cu->objfile; |
72bf9492 DJ |
11308 | struct partial_die_info *part_die; |
11309 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; | |
11310 | struct abbrev_info *abbrev; | |
11311 | unsigned int bytes_read; | |
5afb4e99 | 11312 | unsigned int load_all = 0; |
72bf9492 DJ |
11313 | int nesting_level = 1; |
11314 | ||
11315 | parent_die = NULL; | |
11316 | last_die = NULL; | |
11317 | ||
7adf1e79 DE |
11318 | gdb_assert (cu->per_cu != NULL); |
11319 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
11320 | load_all = 1; |
11321 | ||
72bf9492 DJ |
11322 | cu->partial_dies |
11323 | = htab_create_alloc_ex (cu->header.length / 12, | |
11324 | partial_die_hash, | |
11325 | partial_die_eq, | |
11326 | NULL, | |
11327 | &cu->comp_unit_obstack, | |
11328 | hashtab_obstack_allocate, | |
11329 | dummy_obstack_deallocate); | |
11330 | ||
11331 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
11332 | sizeof (struct partial_die_info)); | |
11333 | ||
11334 | while (1) | |
11335 | { | |
11336 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
11337 | ||
11338 | /* A NULL abbrev means the end of a series of children. */ | |
11339 | if (abbrev == NULL) | |
11340 | { | |
11341 | if (--nesting_level == 0) | |
11342 | { | |
11343 | /* PART_DIE was probably the last thing allocated on the | |
11344 | comp_unit_obstack, so we could call obstack_free | |
11345 | here. We don't do that because the waste is small, | |
11346 | and will be cleaned up when we're done with this | |
11347 | compilation unit. This way, we're also more robust | |
11348 | against other users of the comp_unit_obstack. */ | |
11349 | return first_die; | |
11350 | } | |
11351 | info_ptr += bytes_read; | |
11352 | last_die = parent_die; | |
11353 | parent_die = parent_die->die_parent; | |
11354 | continue; | |
11355 | } | |
11356 | ||
98bfdba5 PA |
11357 | /* Check for template arguments. We never save these; if |
11358 | they're seen, we just mark the parent, and go on our way. */ | |
11359 | if (parent_die != NULL | |
11360 | && cu->language == language_cplus | |
11361 | && (abbrev->tag == DW_TAG_template_type_param | |
11362 | || abbrev->tag == DW_TAG_template_value_param)) | |
11363 | { | |
11364 | parent_die->has_template_arguments = 1; | |
11365 | ||
11366 | if (!load_all) | |
11367 | { | |
11368 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 11369 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
11370 | continue; |
11371 | } | |
11372 | } | |
11373 | ||
0d99eb77 | 11374 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
11375 | Skip their other children. */ |
11376 | if (!load_all | |
11377 | && cu->language == language_cplus | |
11378 | && parent_die != NULL | |
11379 | && parent_die->tag == DW_TAG_subprogram) | |
11380 | { | |
dee91e82 | 11381 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
11382 | continue; |
11383 | } | |
11384 | ||
5afb4e99 DJ |
11385 | /* Check whether this DIE is interesting enough to save. Normally |
11386 | we would not be interested in members here, but there may be | |
11387 | later variables referencing them via DW_AT_specification (for | |
11388 | static members). */ | |
11389 | if (!load_all | |
11390 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 11391 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
11392 | && abbrev->tag != DW_TAG_enumerator |
11393 | && abbrev->tag != DW_TAG_subprogram | |
bc30ff58 | 11394 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 11395 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 11396 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 11397 | && abbrev->tag != DW_TAG_module |
95554aad TT |
11398 | && abbrev->tag != DW_TAG_member |
11399 | && abbrev->tag != DW_TAG_imported_unit) | |
72bf9492 DJ |
11400 | { |
11401 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 11402 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
11403 | continue; |
11404 | } | |
11405 | ||
dee91e82 DE |
11406 | info_ptr = read_partial_die (reader, part_die, abbrev, bytes_read, |
11407 | info_ptr); | |
72bf9492 DJ |
11408 | |
11409 | /* This two-pass algorithm for processing partial symbols has a | |
11410 | high cost in cache pressure. Thus, handle some simple cases | |
11411 | here which cover the majority of C partial symbols. DIEs | |
11412 | which neither have specification tags in them, nor could have | |
11413 | specification tags elsewhere pointing at them, can simply be | |
11414 | processed and discarded. | |
11415 | ||
11416 | This segment is also optional; scan_partial_symbols and | |
11417 | add_partial_symbol will handle these DIEs if we chain | |
11418 | them in normally. When compilers which do not emit large | |
11419 | quantities of duplicate debug information are more common, | |
11420 | this code can probably be removed. */ | |
11421 | ||
11422 | /* Any complete simple types at the top level (pretty much all | |
11423 | of them, for a language without namespaces), can be processed | |
11424 | directly. */ | |
11425 | if (parent_die == NULL | |
11426 | && part_die->has_specification == 0 | |
11427 | && part_die->is_declaration == 0 | |
d8228535 | 11428 | && ((part_die->tag == DW_TAG_typedef && !part_die->has_children) |
72bf9492 DJ |
11429 | || part_die->tag == DW_TAG_base_type |
11430 | || part_die->tag == DW_TAG_subrange_type)) | |
11431 | { | |
11432 | if (building_psymtab && part_die->name != NULL) | |
04a679b8 | 11433 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 11434 | VAR_DOMAIN, LOC_TYPEDEF, |
bb5ed363 DE |
11435 | &objfile->static_psymbols, |
11436 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
dee91e82 | 11437 | info_ptr = locate_pdi_sibling (reader, part_die, info_ptr); |
72bf9492 DJ |
11438 | continue; |
11439 | } | |
11440 | ||
d8228535 JK |
11441 | /* The exception for DW_TAG_typedef with has_children above is |
11442 | a workaround of GCC PR debug/47510. In the case of this complaint | |
11443 | type_name_no_tag_or_error will error on such types later. | |
11444 | ||
11445 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
11446 | it could not find the child DIEs referenced later, this is checked | |
11447 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
11448 | ||
11449 | if (part_die->tag == DW_TAG_typedef && part_die->has_children) | |
11450 | complaint (&symfile_complaints, | |
11451 | _("DW_TAG_typedef has childen - GCC PR debug/47510 bug " | |
11452 | "- DIE at 0x%x [in module %s]"), | |
b64f50a1 | 11453 | part_die->offset.sect_off, objfile->name); |
d8228535 | 11454 | |
72bf9492 DJ |
11455 | /* If we're at the second level, and we're an enumerator, and |
11456 | our parent has no specification (meaning possibly lives in a | |
11457 | namespace elsewhere), then we can add the partial symbol now | |
11458 | instead of queueing it. */ | |
11459 | if (part_die->tag == DW_TAG_enumerator | |
11460 | && parent_die != NULL | |
11461 | && parent_die->die_parent == NULL | |
11462 | && parent_die->tag == DW_TAG_enumeration_type | |
11463 | && parent_die->has_specification == 0) | |
11464 | { | |
11465 | if (part_die->name == NULL) | |
3e43a32a MS |
11466 | complaint (&symfile_complaints, |
11467 | _("malformed enumerator DIE ignored")); | |
72bf9492 | 11468 | else if (building_psymtab) |
04a679b8 | 11469 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 11470 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
11471 | (cu->language == language_cplus |
11472 | || cu->language == language_java) | |
bb5ed363 DE |
11473 | ? &objfile->global_psymbols |
11474 | : &objfile->static_psymbols, | |
11475 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
72bf9492 | 11476 | |
dee91e82 | 11477 | info_ptr = locate_pdi_sibling (reader, part_die, info_ptr); |
72bf9492 DJ |
11478 | continue; |
11479 | } | |
11480 | ||
11481 | /* We'll save this DIE so link it in. */ | |
11482 | part_die->die_parent = parent_die; | |
11483 | part_die->die_sibling = NULL; | |
11484 | part_die->die_child = NULL; | |
11485 | ||
11486 | if (last_die && last_die == parent_die) | |
11487 | last_die->die_child = part_die; | |
11488 | else if (last_die) | |
11489 | last_die->die_sibling = part_die; | |
11490 | ||
11491 | last_die = part_die; | |
11492 | ||
11493 | if (first_die == NULL) | |
11494 | first_die = part_die; | |
11495 | ||
11496 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
11497 | find interesting need to be in the hash table, because we | |
11498 | also have the parent/sibling/child chains; only those that we | |
11499 | might refer to by offset later during partial symbol reading. | |
11500 | ||
11501 | For now this means things that might have be the target of a | |
11502 | DW_AT_specification, DW_AT_abstract_origin, or | |
11503 | DW_AT_extension. DW_AT_extension will refer only to | |
11504 | namespaces; DW_AT_abstract_origin refers to functions (and | |
11505 | many things under the function DIE, but we do not recurse | |
11506 | into function DIEs during partial symbol reading) and | |
11507 | possibly variables as well; DW_AT_specification refers to | |
11508 | declarations. Declarations ought to have the DW_AT_declaration | |
11509 | flag. It happens that GCC forgets to put it in sometimes, but | |
11510 | only for functions, not for types. | |
11511 | ||
11512 | Adding more things than necessary to the hash table is harmless | |
11513 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
11514 | wasted time in find_partial_die, when we reread the compilation |
11515 | unit with load_all_dies set. */ | |
72bf9492 | 11516 | |
5afb4e99 | 11517 | if (load_all |
72929c62 | 11518 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 11519 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
11520 | || abbrev->tag == DW_TAG_variable |
11521 | || abbrev->tag == DW_TAG_namespace | |
11522 | || part_die->is_declaration) | |
11523 | { | |
11524 | void **slot; | |
11525 | ||
11526 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
b64f50a1 | 11527 | part_die->offset.sect_off, INSERT); |
72bf9492 DJ |
11528 | *slot = part_die; |
11529 | } | |
11530 | ||
11531 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
11532 | sizeof (struct partial_die_info)); | |
11533 | ||
11534 | /* For some DIEs we want to follow their children (if any). For C | |
bc30ff58 | 11535 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
11536 | languages we have to, so that we can get at method physnames |
11537 | to infer fully qualified class names, for DW_AT_specification, | |
11538 | and for C++ template arguments. For C++, we also look one level | |
11539 | inside functions to find template arguments (if the name of the | |
11540 | function does not already contain the template arguments). | |
bc30ff58 JB |
11541 | |
11542 | For Ada, we need to scan the children of subprograms and lexical | |
11543 | blocks as well because Ada allows the definition of nested | |
11544 | entities that could be interesting for the debugger, such as | |
11545 | nested subprograms for instance. */ | |
72bf9492 | 11546 | if (last_die->has_children |
5afb4e99 DJ |
11547 | && (load_all |
11548 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 11549 | || last_die->tag == DW_TAG_module |
72bf9492 | 11550 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
11551 | || (cu->language == language_cplus |
11552 | && last_die->tag == DW_TAG_subprogram | |
11553 | && (last_die->name == NULL | |
11554 | || strchr (last_die->name, '<') == NULL)) | |
72bf9492 DJ |
11555 | || (cu->language != language_c |
11556 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 11557 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 11558 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 JB |
11559 | || last_die->tag == DW_TAG_union_type)) |
11560 | || (cu->language == language_ada | |
11561 | && (last_die->tag == DW_TAG_subprogram | |
11562 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
11563 | { |
11564 | nesting_level++; | |
11565 | parent_die = last_die; | |
11566 | continue; | |
11567 | } | |
11568 | ||
11569 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 11570 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
11571 | |
11572 | /* Back to the top, do it again. */ | |
11573 | } | |
11574 | } | |
11575 | ||
c906108c SS |
11576 | /* Read a minimal amount of information into the minimal die structure. */ |
11577 | ||
fe1b8b76 | 11578 | static gdb_byte * |
dee91e82 DE |
11579 | read_partial_die (const struct die_reader_specs *reader, |
11580 | struct partial_die_info *part_die, | |
11581 | struct abbrev_info *abbrev, unsigned int abbrev_len, | |
11582 | gdb_byte *info_ptr) | |
c906108c | 11583 | { |
dee91e82 | 11584 | struct dwarf2_cu *cu = reader->cu; |
bb5ed363 | 11585 | struct objfile *objfile = cu->objfile; |
dee91e82 | 11586 | gdb_byte *buffer = reader->buffer; |
fa238c03 | 11587 | unsigned int i; |
c906108c | 11588 | struct attribute attr; |
c5aa993b | 11589 | int has_low_pc_attr = 0; |
c906108c | 11590 | int has_high_pc_attr = 0; |
91da1414 | 11591 | int high_pc_relative = 0; |
c906108c | 11592 | |
72bf9492 | 11593 | memset (part_die, 0, sizeof (struct partial_die_info)); |
c906108c | 11594 | |
b64f50a1 | 11595 | part_die->offset.sect_off = info_ptr - buffer; |
72bf9492 DJ |
11596 | |
11597 | info_ptr += abbrev_len; | |
11598 | ||
11599 | if (abbrev == NULL) | |
11600 | return info_ptr; | |
11601 | ||
c906108c SS |
11602 | part_die->tag = abbrev->tag; |
11603 | part_die->has_children = abbrev->has_children; | |
c906108c SS |
11604 | |
11605 | for (i = 0; i < abbrev->num_attrs; ++i) | |
11606 | { | |
dee91e82 | 11607 | info_ptr = read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
c906108c SS |
11608 | |
11609 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 11610 | partial symbol table. */ |
c906108c SS |
11611 | switch (attr.name) |
11612 | { | |
11613 | case DW_AT_name: | |
71c25dea TT |
11614 | switch (part_die->tag) |
11615 | { | |
11616 | case DW_TAG_compile_unit: | |
95554aad | 11617 | case DW_TAG_partial_unit: |
348e048f | 11618 | case DW_TAG_type_unit: |
71c25dea TT |
11619 | /* Compilation units have a DW_AT_name that is a filename, not |
11620 | a source language identifier. */ | |
11621 | case DW_TAG_enumeration_type: | |
11622 | case DW_TAG_enumerator: | |
11623 | /* These tags always have simple identifiers already; no need | |
11624 | to canonicalize them. */ | |
11625 | part_die->name = DW_STRING (&attr); | |
11626 | break; | |
11627 | default: | |
11628 | part_die->name | |
11629 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, | |
bb5ed363 | 11630 | &objfile->objfile_obstack); |
71c25dea TT |
11631 | break; |
11632 | } | |
c906108c | 11633 | break; |
31ef98ae | 11634 | case DW_AT_linkage_name: |
c906108c | 11635 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
11636 | /* Note that both forms of linkage name might appear. We |
11637 | assume they will be the same, and we only store the last | |
11638 | one we see. */ | |
94af9270 KS |
11639 | if (cu->language == language_ada) |
11640 | part_die->name = DW_STRING (&attr); | |
abc72ce4 | 11641 | part_die->linkage_name = DW_STRING (&attr); |
c906108c SS |
11642 | break; |
11643 | case DW_AT_low_pc: | |
11644 | has_low_pc_attr = 1; | |
11645 | part_die->lowpc = DW_ADDR (&attr); | |
11646 | break; | |
11647 | case DW_AT_high_pc: | |
11648 | has_high_pc_attr = 1; | |
3019eac3 DE |
11649 | if (attr.form == DW_FORM_addr |
11650 | || attr.form == DW_FORM_GNU_addr_index) | |
91da1414 MW |
11651 | part_die->highpc = DW_ADDR (&attr); |
11652 | else | |
11653 | { | |
11654 | high_pc_relative = 1; | |
11655 | part_die->highpc = DW_UNSND (&attr); | |
11656 | } | |
c906108c SS |
11657 | break; |
11658 | case DW_AT_location: | |
0963b4bd | 11659 | /* Support the .debug_loc offsets. */ |
8e19ed76 PS |
11660 | if (attr_form_is_block (&attr)) |
11661 | { | |
95554aad | 11662 | part_die->d.locdesc = DW_BLOCK (&attr); |
8e19ed76 | 11663 | } |
3690dd37 | 11664 | else if (attr_form_is_section_offset (&attr)) |
8e19ed76 | 11665 | { |
4d3c2250 | 11666 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
11667 | } |
11668 | else | |
11669 | { | |
4d3c2250 KB |
11670 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
11671 | "partial symbol information"); | |
8e19ed76 | 11672 | } |
c906108c | 11673 | break; |
c906108c SS |
11674 | case DW_AT_external: |
11675 | part_die->is_external = DW_UNSND (&attr); | |
11676 | break; | |
11677 | case DW_AT_declaration: | |
11678 | part_die->is_declaration = DW_UNSND (&attr); | |
11679 | break; | |
11680 | case DW_AT_type: | |
11681 | part_die->has_type = 1; | |
11682 | break; | |
11683 | case DW_AT_abstract_origin: | |
11684 | case DW_AT_specification: | |
72bf9492 DJ |
11685 | case DW_AT_extension: |
11686 | part_die->has_specification = 1; | |
c764a876 | 11687 | part_die->spec_offset = dwarf2_get_ref_die_offset (&attr); |
c906108c SS |
11688 | break; |
11689 | case DW_AT_sibling: | |
11690 | /* Ignore absolute siblings, they might point outside of | |
11691 | the current compile unit. */ | |
11692 | if (attr.form == DW_FORM_ref_addr) | |
3e43a32a MS |
11693 | complaint (&symfile_complaints, |
11694 | _("ignoring absolute DW_AT_sibling")); | |
c906108c | 11695 | else |
b64f50a1 | 11696 | part_die->sibling = buffer + dwarf2_get_ref_die_offset (&attr).sect_off; |
c906108c | 11697 | break; |
fa4028e9 JB |
11698 | case DW_AT_byte_size: |
11699 | part_die->has_byte_size = 1; | |
11700 | break; | |
68511cec CES |
11701 | case DW_AT_calling_convention: |
11702 | /* DWARF doesn't provide a way to identify a program's source-level | |
11703 | entry point. DW_AT_calling_convention attributes are only meant | |
11704 | to describe functions' calling conventions. | |
11705 | ||
11706 | However, because it's a necessary piece of information in | |
11707 | Fortran, and because DW_CC_program is the only piece of debugging | |
11708 | information whose definition refers to a 'main program' at all, | |
11709 | several compilers have begun marking Fortran main programs with | |
11710 | DW_CC_program --- even when those functions use the standard | |
11711 | calling conventions. | |
11712 | ||
11713 | So until DWARF specifies a way to provide this information and | |
11714 | compilers pick up the new representation, we'll support this | |
11715 | practice. */ | |
11716 | if (DW_UNSND (&attr) == DW_CC_program | |
11717 | && cu->language == language_fortran) | |
01f8c46d JK |
11718 | { |
11719 | set_main_name (part_die->name); | |
11720 | ||
11721 | /* As this DIE has a static linkage the name would be difficult | |
11722 | to look up later. */ | |
11723 | language_of_main = language_fortran; | |
11724 | } | |
68511cec | 11725 | break; |
481860b3 GB |
11726 | case DW_AT_inline: |
11727 | if (DW_UNSND (&attr) == DW_INL_inlined | |
11728 | || DW_UNSND (&attr) == DW_INL_declared_inlined) | |
11729 | part_die->may_be_inlined = 1; | |
11730 | break; | |
95554aad TT |
11731 | |
11732 | case DW_AT_import: | |
11733 | if (part_die->tag == DW_TAG_imported_unit) | |
11734 | part_die->d.offset = dwarf2_get_ref_die_offset (&attr); | |
11735 | break; | |
11736 | ||
c906108c SS |
11737 | default: |
11738 | break; | |
11739 | } | |
11740 | } | |
11741 | ||
91da1414 MW |
11742 | if (high_pc_relative) |
11743 | part_die->highpc += part_die->lowpc; | |
11744 | ||
9373cf26 JK |
11745 | if (has_low_pc_attr && has_high_pc_attr) |
11746 | { | |
11747 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
11748 | eliminate duplicate copies of functions and vtables and such. | |
11749 | The linker will arbitrarily choose one and discard the others. | |
11750 | The AT_*_pc values for such functions refer to local labels in | |
11751 | these sections. If the section from that file was discarded, the | |
11752 | labels are not in the output, so the relocs get a value of 0. | |
11753 | If this is a discarded function, mark the pc bounds as invalid, | |
11754 | so that GDB will ignore it. */ | |
11755 | if (part_die->lowpc == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
11756 | { | |
bb5ed363 | 11757 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
11758 | |
11759 | complaint (&symfile_complaints, | |
11760 | _("DW_AT_low_pc %s is zero " | |
11761 | "for DIE at 0x%x [in module %s]"), | |
11762 | paddress (gdbarch, part_die->lowpc), | |
b64f50a1 | 11763 | part_die->offset.sect_off, objfile->name); |
9373cf26 JK |
11764 | } |
11765 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
11766 | else if (part_die->lowpc >= part_die->highpc) | |
11767 | { | |
bb5ed363 | 11768 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
11769 | |
11770 | complaint (&symfile_complaints, | |
11771 | _("DW_AT_low_pc %s is not < DW_AT_high_pc %s " | |
11772 | "for DIE at 0x%x [in module %s]"), | |
11773 | paddress (gdbarch, part_die->lowpc), | |
11774 | paddress (gdbarch, part_die->highpc), | |
b64f50a1 | 11775 | part_die->offset.sect_off, objfile->name); |
9373cf26 JK |
11776 | } |
11777 | else | |
11778 | part_die->has_pc_info = 1; | |
11779 | } | |
85cbf3d3 | 11780 | |
c906108c SS |
11781 | return info_ptr; |
11782 | } | |
11783 | ||
72bf9492 DJ |
11784 | /* Find a cached partial DIE at OFFSET in CU. */ |
11785 | ||
11786 | static struct partial_die_info * | |
b64f50a1 | 11787 | find_partial_die_in_comp_unit (sect_offset offset, struct dwarf2_cu *cu) |
72bf9492 DJ |
11788 | { |
11789 | struct partial_die_info *lookup_die = NULL; | |
11790 | struct partial_die_info part_die; | |
11791 | ||
11792 | part_die.offset = offset; | |
b64f50a1 JK |
11793 | lookup_die = htab_find_with_hash (cu->partial_dies, &part_die, |
11794 | offset.sect_off); | |
72bf9492 | 11795 | |
72bf9492 DJ |
11796 | return lookup_die; |
11797 | } | |
11798 | ||
348e048f DE |
11799 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
11800 | except in the case of .debug_types DIEs which do not reference | |
11801 | outside their CU (they do however referencing other types via | |
55f1336d | 11802 | DW_FORM_ref_sig8). */ |
72bf9492 DJ |
11803 | |
11804 | static struct partial_die_info * | |
b64f50a1 | 11805 | find_partial_die (sect_offset offset, struct dwarf2_cu *cu) |
72bf9492 | 11806 | { |
bb5ed363 | 11807 | struct objfile *objfile = cu->objfile; |
5afb4e99 DJ |
11808 | struct dwarf2_per_cu_data *per_cu = NULL; |
11809 | struct partial_die_info *pd = NULL; | |
72bf9492 | 11810 | |
45452591 | 11811 | if (offset_in_cu_p (&cu->header, offset)) |
5afb4e99 DJ |
11812 | { |
11813 | pd = find_partial_die_in_comp_unit (offset, cu); | |
11814 | if (pd != NULL) | |
11815 | return pd; | |
0d99eb77 DE |
11816 | /* We missed recording what we needed. |
11817 | Load all dies and try again. */ | |
11818 | per_cu = cu->per_cu; | |
5afb4e99 | 11819 | } |
0d99eb77 DE |
11820 | else |
11821 | { | |
11822 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 11823 | if (cu->per_cu->is_debug_types) |
0d99eb77 DE |
11824 | { |
11825 | error (_("Dwarf Error: Type Unit at offset 0x%lx contains" | |
11826 | " external reference to offset 0x%lx [in module %s].\n"), | |
11827 | (long) cu->header.offset.sect_off, (long) offset.sect_off, | |
11828 | bfd_get_filename (objfile->obfd)); | |
11829 | } | |
11830 | per_cu = dwarf2_find_containing_comp_unit (offset, objfile); | |
72bf9492 | 11831 | |
0d99eb77 DE |
11832 | if (per_cu->cu == NULL || per_cu->cu->partial_dies == NULL) |
11833 | load_partial_comp_unit (per_cu); | |
ae038cb0 | 11834 | |
0d99eb77 DE |
11835 | per_cu->cu->last_used = 0; |
11836 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
11837 | } | |
5afb4e99 | 11838 | |
dee91e82 DE |
11839 | /* If we didn't find it, and not all dies have been loaded, |
11840 | load them all and try again. */ | |
11841 | ||
5afb4e99 DJ |
11842 | if (pd == NULL && per_cu->load_all_dies == 0) |
11843 | { | |
5afb4e99 | 11844 | per_cu->load_all_dies = 1; |
fd820528 DE |
11845 | |
11846 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
11847 | THIS_CU->cu may already be in use. So we can't just free it and | |
11848 | replace its DIEs with the ones we read in. Instead, we leave those | |
11849 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
11850 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
11851 | set. */ | |
dee91e82 | 11852 | load_partial_comp_unit (per_cu); |
5afb4e99 DJ |
11853 | |
11854 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
11855 | } | |
11856 | ||
11857 | if (pd == NULL) | |
11858 | internal_error (__FILE__, __LINE__, | |
3e43a32a MS |
11859 | _("could not find partial DIE 0x%x " |
11860 | "in cache [from module %s]\n"), | |
b64f50a1 | 11861 | offset.sect_off, bfd_get_filename (objfile->obfd)); |
5afb4e99 | 11862 | return pd; |
72bf9492 DJ |
11863 | } |
11864 | ||
abc72ce4 DE |
11865 | /* See if we can figure out if the class lives in a namespace. We do |
11866 | this by looking for a member function; its demangled name will | |
11867 | contain namespace info, if there is any. */ | |
11868 | ||
11869 | static void | |
11870 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
11871 | struct dwarf2_cu *cu) | |
11872 | { | |
11873 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
11874 | what template types look like, because the demangler | |
11875 | frequently doesn't give the same name as the debug info. We | |
11876 | could fix this by only using the demangled name to get the | |
11877 | prefix (but see comment in read_structure_type). */ | |
11878 | ||
11879 | struct partial_die_info *real_pdi; | |
11880 | struct partial_die_info *child_pdi; | |
11881 | ||
11882 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
11883 | we should not do this. We'll prepend the parent's fully qualified | |
11884 | name when we create the partial symbol. */ | |
11885 | ||
11886 | real_pdi = struct_pdi; | |
11887 | while (real_pdi->has_specification) | |
11888 | real_pdi = find_partial_die (real_pdi->spec_offset, cu); | |
11889 | ||
11890 | if (real_pdi->die_parent != NULL) | |
11891 | return; | |
11892 | ||
11893 | for (child_pdi = struct_pdi->die_child; | |
11894 | child_pdi != NULL; | |
11895 | child_pdi = child_pdi->die_sibling) | |
11896 | { | |
11897 | if (child_pdi->tag == DW_TAG_subprogram | |
11898 | && child_pdi->linkage_name != NULL) | |
11899 | { | |
11900 | char *actual_class_name | |
11901 | = language_class_name_from_physname (cu->language_defn, | |
11902 | child_pdi->linkage_name); | |
11903 | if (actual_class_name != NULL) | |
11904 | { | |
11905 | struct_pdi->name | |
11906 | = obsavestring (actual_class_name, | |
11907 | strlen (actual_class_name), | |
11908 | &cu->objfile->objfile_obstack); | |
11909 | xfree (actual_class_name); | |
11910 | } | |
11911 | break; | |
11912 | } | |
11913 | } | |
11914 | } | |
11915 | ||
72bf9492 DJ |
11916 | /* Adjust PART_DIE before generating a symbol for it. This function |
11917 | may set the is_external flag or change the DIE's name. */ | |
11918 | ||
11919 | static void | |
11920 | fixup_partial_die (struct partial_die_info *part_die, | |
11921 | struct dwarf2_cu *cu) | |
11922 | { | |
abc72ce4 DE |
11923 | /* Once we've fixed up a die, there's no point in doing so again. |
11924 | This also avoids a memory leak if we were to call | |
11925 | guess_partial_die_structure_name multiple times. */ | |
11926 | if (part_die->fixup_called) | |
11927 | return; | |
11928 | ||
72bf9492 DJ |
11929 | /* If we found a reference attribute and the DIE has no name, try |
11930 | to find a name in the referred to DIE. */ | |
11931 | ||
11932 | if (part_die->name == NULL && part_die->has_specification) | |
11933 | { | |
11934 | struct partial_die_info *spec_die; | |
72bf9492 | 11935 | |
10b3939b | 11936 | spec_die = find_partial_die (part_die->spec_offset, cu); |
72bf9492 | 11937 | |
10b3939b | 11938 | fixup_partial_die (spec_die, cu); |
72bf9492 DJ |
11939 | |
11940 | if (spec_die->name) | |
11941 | { | |
11942 | part_die->name = spec_die->name; | |
11943 | ||
11944 | /* Copy DW_AT_external attribute if it is set. */ | |
11945 | if (spec_die->is_external) | |
11946 | part_die->is_external = spec_die->is_external; | |
11947 | } | |
11948 | } | |
11949 | ||
11950 | /* Set default names for some unnamed DIEs. */ | |
72bf9492 DJ |
11951 | |
11952 | if (part_die->name == NULL && part_die->tag == DW_TAG_namespace) | |
2b1dbab0 | 11953 | part_die->name = CP_ANONYMOUS_NAMESPACE_STR; |
72bf9492 | 11954 | |
abc72ce4 DE |
11955 | /* If there is no parent die to provide a namespace, and there are |
11956 | children, see if we can determine the namespace from their linkage | |
122d1940 | 11957 | name. */ |
abc72ce4 | 11958 | if (cu->language == language_cplus |
8b70b953 | 11959 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
11960 | && part_die->die_parent == NULL |
11961 | && part_die->has_children | |
11962 | && (part_die->tag == DW_TAG_class_type | |
11963 | || part_die->tag == DW_TAG_structure_type | |
11964 | || part_die->tag == DW_TAG_union_type)) | |
11965 | guess_partial_die_structure_name (part_die, cu); | |
11966 | ||
53832f31 TT |
11967 | /* GCC might emit a nameless struct or union that has a linkage |
11968 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
11969 | if (part_die->name == NULL | |
96408a79 SA |
11970 | && (part_die->tag == DW_TAG_class_type |
11971 | || part_die->tag == DW_TAG_interface_type | |
11972 | || part_die->tag == DW_TAG_structure_type | |
11973 | || part_die->tag == DW_TAG_union_type) | |
53832f31 TT |
11974 | && part_die->linkage_name != NULL) |
11975 | { | |
11976 | char *demangled; | |
11977 | ||
11978 | demangled = cplus_demangle (part_die->linkage_name, DMGL_TYPES); | |
11979 | if (demangled) | |
11980 | { | |
96408a79 SA |
11981 | const char *base; |
11982 | ||
11983 | /* Strip any leading namespaces/classes, keep only the base name. | |
11984 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
11985 | base = strrchr (demangled, ':'); | |
11986 | if (base && base > demangled && base[-1] == ':') | |
11987 | base++; | |
11988 | else | |
11989 | base = demangled; | |
11990 | ||
11991 | part_die->name = obsavestring (base, strlen (base), | |
53832f31 TT |
11992 | &cu->objfile->objfile_obstack); |
11993 | xfree (demangled); | |
11994 | } | |
11995 | } | |
11996 | ||
abc72ce4 | 11997 | part_die->fixup_called = 1; |
72bf9492 DJ |
11998 | } |
11999 | ||
a8329558 | 12000 | /* Read an attribute value described by an attribute form. */ |
c906108c | 12001 | |
fe1b8b76 | 12002 | static gdb_byte * |
dee91e82 DE |
12003 | read_attribute_value (const struct die_reader_specs *reader, |
12004 | struct attribute *attr, unsigned form, | |
12005 | gdb_byte *info_ptr) | |
c906108c | 12006 | { |
dee91e82 DE |
12007 | struct dwarf2_cu *cu = reader->cu; |
12008 | bfd *abfd = reader->abfd; | |
e7c27a73 | 12009 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
12010 | unsigned int bytes_read; |
12011 | struct dwarf_block *blk; | |
12012 | ||
a8329558 KW |
12013 | attr->form = form; |
12014 | switch (form) | |
c906108c | 12015 | { |
c906108c | 12016 | case DW_FORM_ref_addr: |
ae411497 | 12017 | if (cu->header.version == 2) |
4568ecf9 | 12018 | DW_UNSND (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
ae411497 | 12019 | else |
4568ecf9 DE |
12020 | DW_UNSND (attr) = read_offset (abfd, info_ptr, |
12021 | &cu->header, &bytes_read); | |
ae411497 TT |
12022 | info_ptr += bytes_read; |
12023 | break; | |
12024 | case DW_FORM_addr: | |
e7c27a73 | 12025 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
107d2387 | 12026 | info_ptr += bytes_read; |
c906108c SS |
12027 | break; |
12028 | case DW_FORM_block2: | |
7b5a2f43 | 12029 | blk = dwarf_alloc_block (cu); |
c906108c SS |
12030 | blk->size = read_2_bytes (abfd, info_ptr); |
12031 | info_ptr += 2; | |
12032 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
12033 | info_ptr += blk->size; | |
12034 | DW_BLOCK (attr) = blk; | |
12035 | break; | |
12036 | case DW_FORM_block4: | |
7b5a2f43 | 12037 | blk = dwarf_alloc_block (cu); |
c906108c SS |
12038 | blk->size = read_4_bytes (abfd, info_ptr); |
12039 | info_ptr += 4; | |
12040 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
12041 | info_ptr += blk->size; | |
12042 | DW_BLOCK (attr) = blk; | |
12043 | break; | |
12044 | case DW_FORM_data2: | |
12045 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
12046 | info_ptr += 2; | |
12047 | break; | |
12048 | case DW_FORM_data4: | |
12049 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
12050 | info_ptr += 4; | |
12051 | break; | |
12052 | case DW_FORM_data8: | |
12053 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
12054 | info_ptr += 8; | |
12055 | break; | |
2dc7f7b3 TT |
12056 | case DW_FORM_sec_offset: |
12057 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
12058 | info_ptr += bytes_read; | |
12059 | break; | |
c906108c | 12060 | case DW_FORM_string: |
9b1c24c8 | 12061 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 12062 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
12063 | info_ptr += bytes_read; |
12064 | break; | |
4bdf3d34 JJ |
12065 | case DW_FORM_strp: |
12066 | DW_STRING (attr) = read_indirect_string (abfd, info_ptr, cu_header, | |
12067 | &bytes_read); | |
8285870a | 12068 | DW_STRING_IS_CANONICAL (attr) = 0; |
4bdf3d34 JJ |
12069 | info_ptr += bytes_read; |
12070 | break; | |
2dc7f7b3 | 12071 | case DW_FORM_exprloc: |
c906108c | 12072 | case DW_FORM_block: |
7b5a2f43 | 12073 | blk = dwarf_alloc_block (cu); |
c906108c SS |
12074 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
12075 | info_ptr += bytes_read; | |
12076 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
12077 | info_ptr += blk->size; | |
12078 | DW_BLOCK (attr) = blk; | |
12079 | break; | |
12080 | case DW_FORM_block1: | |
7b5a2f43 | 12081 | blk = dwarf_alloc_block (cu); |
c906108c SS |
12082 | blk->size = read_1_byte (abfd, info_ptr); |
12083 | info_ptr += 1; | |
12084 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
12085 | info_ptr += blk->size; | |
12086 | DW_BLOCK (attr) = blk; | |
12087 | break; | |
12088 | case DW_FORM_data1: | |
12089 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
12090 | info_ptr += 1; | |
12091 | break; | |
12092 | case DW_FORM_flag: | |
12093 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
12094 | info_ptr += 1; | |
12095 | break; | |
2dc7f7b3 TT |
12096 | case DW_FORM_flag_present: |
12097 | DW_UNSND (attr) = 1; | |
12098 | break; | |
c906108c SS |
12099 | case DW_FORM_sdata: |
12100 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
12101 | info_ptr += bytes_read; | |
12102 | break; | |
12103 | case DW_FORM_udata: | |
12104 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
12105 | info_ptr += bytes_read; | |
12106 | break; | |
12107 | case DW_FORM_ref1: | |
4568ecf9 DE |
12108 | DW_UNSND (attr) = (cu->header.offset.sect_off |
12109 | + read_1_byte (abfd, info_ptr)); | |
c906108c SS |
12110 | info_ptr += 1; |
12111 | break; | |
12112 | case DW_FORM_ref2: | |
4568ecf9 DE |
12113 | DW_UNSND (attr) = (cu->header.offset.sect_off |
12114 | + read_2_bytes (abfd, info_ptr)); | |
c906108c SS |
12115 | info_ptr += 2; |
12116 | break; | |
12117 | case DW_FORM_ref4: | |
4568ecf9 DE |
12118 | DW_UNSND (attr) = (cu->header.offset.sect_off |
12119 | + read_4_bytes (abfd, info_ptr)); | |
c906108c SS |
12120 | info_ptr += 4; |
12121 | break; | |
613e1657 | 12122 | case DW_FORM_ref8: |
4568ecf9 DE |
12123 | DW_UNSND (attr) = (cu->header.offset.sect_off |
12124 | + read_8_bytes (abfd, info_ptr)); | |
613e1657 KB |
12125 | info_ptr += 8; |
12126 | break; | |
55f1336d | 12127 | case DW_FORM_ref_sig8: |
348e048f DE |
12128 | /* Convert the signature to something we can record in DW_UNSND |
12129 | for later lookup. | |
12130 | NOTE: This is NULL if the type wasn't found. */ | |
12131 | DW_SIGNATURED_TYPE (attr) = | |
e319fa28 | 12132 | lookup_signatured_type (read_8_bytes (abfd, info_ptr)); |
348e048f DE |
12133 | info_ptr += 8; |
12134 | break; | |
c906108c | 12135 | case DW_FORM_ref_udata: |
4568ecf9 DE |
12136 | DW_UNSND (attr) = (cu->header.offset.sect_off |
12137 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); | |
c906108c SS |
12138 | info_ptr += bytes_read; |
12139 | break; | |
c906108c | 12140 | case DW_FORM_indirect: |
a8329558 KW |
12141 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
12142 | info_ptr += bytes_read; | |
dee91e82 | 12143 | info_ptr = read_attribute_value (reader, attr, form, info_ptr); |
a8329558 | 12144 | break; |
3019eac3 DE |
12145 | case DW_FORM_GNU_addr_index: |
12146 | if (reader->dwo_file == NULL) | |
12147 | { | |
12148 | /* For now flag a hard error. | |
12149 | Later we can turn this into a complaint. */ | |
12150 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
12151 | dwarf_form_name (form), | |
12152 | bfd_get_filename (abfd)); | |
12153 | } | |
12154 | DW_ADDR (attr) = read_addr_index_from_leb128 (cu, info_ptr, &bytes_read); | |
12155 | info_ptr += bytes_read; | |
12156 | break; | |
12157 | case DW_FORM_GNU_str_index: | |
12158 | if (reader->dwo_file == NULL) | |
12159 | { | |
12160 | /* For now flag a hard error. | |
12161 | Later we can turn this into a complaint if warranted. */ | |
12162 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
12163 | dwarf_form_name (form), | |
12164 | bfd_get_filename (abfd)); | |
12165 | } | |
12166 | { | |
12167 | ULONGEST str_index = | |
12168 | read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
12169 | ||
12170 | DW_STRING (attr) = read_str_index (reader, cu, str_index); | |
12171 | DW_STRING_IS_CANONICAL (attr) = 0; | |
12172 | info_ptr += bytes_read; | |
12173 | } | |
12174 | break; | |
c906108c | 12175 | default: |
8a3fe4f8 | 12176 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
12177 | dwarf_form_name (form), |
12178 | bfd_get_filename (abfd)); | |
c906108c | 12179 | } |
28e94949 JB |
12180 | |
12181 | /* We have seen instances where the compiler tried to emit a byte | |
12182 | size attribute of -1 which ended up being encoded as an unsigned | |
12183 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
12184 | an object of this size seems pretty unlikely so we can relatively | |
12185 | safely treat these cases as if the size attribute was invalid and | |
12186 | treat them as zero by default. */ | |
12187 | if (attr->name == DW_AT_byte_size | |
12188 | && form == DW_FORM_data4 | |
12189 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
12190 | { |
12191 | complaint | |
12192 | (&symfile_complaints, | |
43bbcdc2 PH |
12193 | _("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
12194 | hex_string (DW_UNSND (attr))); | |
01c66ae6 JB |
12195 | DW_UNSND (attr) = 0; |
12196 | } | |
28e94949 | 12197 | |
c906108c SS |
12198 | return info_ptr; |
12199 | } | |
12200 | ||
a8329558 KW |
12201 | /* Read an attribute described by an abbreviated attribute. */ |
12202 | ||
fe1b8b76 | 12203 | static gdb_byte * |
dee91e82 DE |
12204 | read_attribute (const struct die_reader_specs *reader, |
12205 | struct attribute *attr, struct attr_abbrev *abbrev, | |
12206 | gdb_byte *info_ptr) | |
a8329558 KW |
12207 | { |
12208 | attr->name = abbrev->name; | |
dee91e82 | 12209 | return read_attribute_value (reader, attr, abbrev->form, info_ptr); |
a8329558 KW |
12210 | } |
12211 | ||
0963b4bd | 12212 | /* Read dwarf information from a buffer. */ |
c906108c SS |
12213 | |
12214 | static unsigned int | |
fe1b8b76 | 12215 | read_1_byte (bfd *abfd, gdb_byte *buf) |
c906108c | 12216 | { |
fe1b8b76 | 12217 | return bfd_get_8 (abfd, buf); |
c906108c SS |
12218 | } |
12219 | ||
12220 | static int | |
fe1b8b76 | 12221 | read_1_signed_byte (bfd *abfd, gdb_byte *buf) |
c906108c | 12222 | { |
fe1b8b76 | 12223 | return bfd_get_signed_8 (abfd, buf); |
c906108c SS |
12224 | } |
12225 | ||
12226 | static unsigned int | |
fe1b8b76 | 12227 | read_2_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 12228 | { |
fe1b8b76 | 12229 | return bfd_get_16 (abfd, buf); |
c906108c SS |
12230 | } |
12231 | ||
21ae7a4d JK |
12232 | static int |
12233 | read_2_signed_bytes (bfd *abfd, gdb_byte *buf) | |
12234 | { | |
12235 | return bfd_get_signed_16 (abfd, buf); | |
12236 | } | |
12237 | ||
c906108c | 12238 | static unsigned int |
fe1b8b76 | 12239 | read_4_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 12240 | { |
fe1b8b76 | 12241 | return bfd_get_32 (abfd, buf); |
c906108c SS |
12242 | } |
12243 | ||
21ae7a4d JK |
12244 | static int |
12245 | read_4_signed_bytes (bfd *abfd, gdb_byte *buf) | |
12246 | { | |
12247 | return bfd_get_signed_32 (abfd, buf); | |
12248 | } | |
12249 | ||
93311388 | 12250 | static ULONGEST |
fe1b8b76 | 12251 | read_8_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 12252 | { |
fe1b8b76 | 12253 | return bfd_get_64 (abfd, buf); |
c906108c SS |
12254 | } |
12255 | ||
12256 | static CORE_ADDR | |
fe1b8b76 | 12257 | read_address (bfd *abfd, gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 12258 | unsigned int *bytes_read) |
c906108c | 12259 | { |
e7c27a73 | 12260 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
12261 | CORE_ADDR retval = 0; |
12262 | ||
107d2387 | 12263 | if (cu_header->signed_addr_p) |
c906108c | 12264 | { |
107d2387 AC |
12265 | switch (cu_header->addr_size) |
12266 | { | |
12267 | case 2: | |
fe1b8b76 | 12268 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
12269 | break; |
12270 | case 4: | |
fe1b8b76 | 12271 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
12272 | break; |
12273 | case 8: | |
fe1b8b76 | 12274 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
12275 | break; |
12276 | default: | |
8e65ff28 | 12277 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 12278 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 12279 | bfd_get_filename (abfd)); |
107d2387 AC |
12280 | } |
12281 | } | |
12282 | else | |
12283 | { | |
12284 | switch (cu_header->addr_size) | |
12285 | { | |
12286 | case 2: | |
fe1b8b76 | 12287 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
12288 | break; |
12289 | case 4: | |
fe1b8b76 | 12290 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
12291 | break; |
12292 | case 8: | |
fe1b8b76 | 12293 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
12294 | break; |
12295 | default: | |
8e65ff28 | 12296 | internal_error (__FILE__, __LINE__, |
a73c6dcd MS |
12297 | _("read_address: bad switch, " |
12298 | "unsigned [in module %s]"), | |
659b0389 | 12299 | bfd_get_filename (abfd)); |
107d2387 | 12300 | } |
c906108c | 12301 | } |
64367e0a | 12302 | |
107d2387 AC |
12303 | *bytes_read = cu_header->addr_size; |
12304 | return retval; | |
c906108c SS |
12305 | } |
12306 | ||
f7ef9339 | 12307 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
12308 | specification allows the initial length to take up either 4 bytes |
12309 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
12310 | bytes describe the length and all offsets will be 8 bytes in length | |
12311 | instead of 4. | |
12312 | ||
f7ef9339 KB |
12313 | An older, non-standard 64-bit format is also handled by this |
12314 | function. The older format in question stores the initial length | |
12315 | as an 8-byte quantity without an escape value. Lengths greater | |
12316 | than 2^32 aren't very common which means that the initial 4 bytes | |
12317 | is almost always zero. Since a length value of zero doesn't make | |
12318 | sense for the 32-bit format, this initial zero can be considered to | |
12319 | be an escape value which indicates the presence of the older 64-bit | |
12320 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
12321 | greater than 4GB. If it becomes necessary to handle lengths |
12322 | somewhat larger than 4GB, we could allow other small values (such | |
12323 | as the non-sensical values of 1, 2, and 3) to also be used as | |
12324 | escape values indicating the presence of the old format. | |
f7ef9339 | 12325 | |
917c78fc MK |
12326 | The value returned via bytes_read should be used to increment the |
12327 | relevant pointer after calling read_initial_length(). | |
c764a876 | 12328 | |
613e1657 KB |
12329 | [ Note: read_initial_length() and read_offset() are based on the |
12330 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 12331 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
12332 | from: |
12333 | ||
f7ef9339 | 12334 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
6e70227d | 12335 | |
613e1657 KB |
12336 | This document is only a draft and is subject to change. (So beware.) |
12337 | ||
f7ef9339 | 12338 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
12339 | determined empirically by examining 64-bit ELF files produced by |
12340 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
12341 | |
12342 | - Kevin, July 16, 2002 | |
613e1657 KB |
12343 | ] */ |
12344 | ||
12345 | static LONGEST | |
c764a876 | 12346 | read_initial_length (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read) |
613e1657 | 12347 | { |
fe1b8b76 | 12348 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 12349 | |
dd373385 | 12350 | if (length == 0xffffffff) |
613e1657 | 12351 | { |
fe1b8b76 | 12352 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 12353 | *bytes_read = 12; |
613e1657 | 12354 | } |
dd373385 | 12355 | else if (length == 0) |
f7ef9339 | 12356 | { |
dd373385 | 12357 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 12358 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 12359 | *bytes_read = 8; |
f7ef9339 | 12360 | } |
613e1657 KB |
12361 | else |
12362 | { | |
12363 | *bytes_read = 4; | |
613e1657 KB |
12364 | } |
12365 | ||
c764a876 DE |
12366 | return length; |
12367 | } | |
dd373385 | 12368 | |
c764a876 DE |
12369 | /* Cover function for read_initial_length. |
12370 | Returns the length of the object at BUF, and stores the size of the | |
12371 | initial length in *BYTES_READ and stores the size that offsets will be in | |
12372 | *OFFSET_SIZE. | |
12373 | If the initial length size is not equivalent to that specified in | |
12374 | CU_HEADER then issue a complaint. | |
12375 | This is useful when reading non-comp-unit headers. */ | |
dd373385 | 12376 | |
c764a876 DE |
12377 | static LONGEST |
12378 | read_checked_initial_length_and_offset (bfd *abfd, gdb_byte *buf, | |
12379 | const struct comp_unit_head *cu_header, | |
12380 | unsigned int *bytes_read, | |
12381 | unsigned int *offset_size) | |
12382 | { | |
12383 | LONGEST length = read_initial_length (abfd, buf, bytes_read); | |
12384 | ||
12385 | gdb_assert (cu_header->initial_length_size == 4 | |
12386 | || cu_header->initial_length_size == 8 | |
12387 | || cu_header->initial_length_size == 12); | |
12388 | ||
12389 | if (cu_header->initial_length_size != *bytes_read) | |
12390 | complaint (&symfile_complaints, | |
12391 | _("intermixed 32-bit and 64-bit DWARF sections")); | |
dd373385 | 12392 | |
c764a876 | 12393 | *offset_size = (*bytes_read == 4) ? 4 : 8; |
dd373385 | 12394 | return length; |
613e1657 KB |
12395 | } |
12396 | ||
12397 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 12398 | given by cu_header->offset_size. */ |
613e1657 KB |
12399 | |
12400 | static LONGEST | |
fe1b8b76 | 12401 | read_offset (bfd *abfd, gdb_byte *buf, const struct comp_unit_head *cu_header, |
891d2f0b | 12402 | unsigned int *bytes_read) |
c764a876 DE |
12403 | { |
12404 | LONGEST offset = read_offset_1 (abfd, buf, cu_header->offset_size); | |
9a619af0 | 12405 | |
c764a876 DE |
12406 | *bytes_read = cu_header->offset_size; |
12407 | return offset; | |
12408 | } | |
12409 | ||
12410 | /* Read an offset from the data stream. */ | |
12411 | ||
12412 | static LONGEST | |
12413 | read_offset_1 (bfd *abfd, gdb_byte *buf, unsigned int offset_size) | |
613e1657 KB |
12414 | { |
12415 | LONGEST retval = 0; | |
12416 | ||
c764a876 | 12417 | switch (offset_size) |
613e1657 KB |
12418 | { |
12419 | case 4: | |
fe1b8b76 | 12420 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
12421 | break; |
12422 | case 8: | |
fe1b8b76 | 12423 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
12424 | break; |
12425 | default: | |
8e65ff28 | 12426 | internal_error (__FILE__, __LINE__, |
c764a876 | 12427 | _("read_offset_1: bad switch [in module %s]"), |
659b0389 | 12428 | bfd_get_filename (abfd)); |
613e1657 KB |
12429 | } |
12430 | ||
917c78fc | 12431 | return retval; |
613e1657 KB |
12432 | } |
12433 | ||
fe1b8b76 JB |
12434 | static gdb_byte * |
12435 | read_n_bytes (bfd *abfd, gdb_byte *buf, unsigned int size) | |
c906108c SS |
12436 | { |
12437 | /* If the size of a host char is 8 bits, we can return a pointer | |
12438 | to the buffer, otherwise we have to copy the data to a buffer | |
12439 | allocated on the temporary obstack. */ | |
4bdf3d34 | 12440 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 12441 | return buf; |
c906108c SS |
12442 | } |
12443 | ||
12444 | static char * | |
9b1c24c8 | 12445 | read_direct_string (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c SS |
12446 | { |
12447 | /* If the size of a host char is 8 bits, we can return a pointer | |
12448 | to the string, otherwise we have to copy the string to a buffer | |
12449 | allocated on the temporary obstack. */ | |
4bdf3d34 | 12450 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
12451 | if (*buf == '\0') |
12452 | { | |
12453 | *bytes_read_ptr = 1; | |
12454 | return NULL; | |
12455 | } | |
fe1b8b76 JB |
12456 | *bytes_read_ptr = strlen ((char *) buf) + 1; |
12457 | return (char *) buf; | |
4bdf3d34 JJ |
12458 | } |
12459 | ||
12460 | static char * | |
cf2c3c16 | 12461 | read_indirect_string_at_offset (bfd *abfd, LONGEST str_offset) |
4bdf3d34 | 12462 | { |
be391dca | 12463 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwarf2_per_objfile->str); |
dce234bc | 12464 | if (dwarf2_per_objfile->str.buffer == NULL) |
cf2c3c16 TT |
12465 | error (_("DW_FORM_strp used without .debug_str section [in module %s]"), |
12466 | bfd_get_filename (abfd)); | |
dce234bc | 12467 | if (str_offset >= dwarf2_per_objfile->str.size) |
cf2c3c16 TT |
12468 | error (_("DW_FORM_strp pointing outside of " |
12469 | ".debug_str section [in module %s]"), | |
12470 | bfd_get_filename (abfd)); | |
4bdf3d34 | 12471 | gdb_assert (HOST_CHAR_BIT == 8); |
dce234bc | 12472 | if (dwarf2_per_objfile->str.buffer[str_offset] == '\0') |
4bdf3d34 | 12473 | return NULL; |
dce234bc | 12474 | return (char *) (dwarf2_per_objfile->str.buffer + str_offset); |
c906108c SS |
12475 | } |
12476 | ||
cf2c3c16 TT |
12477 | static char * |
12478 | read_indirect_string (bfd *abfd, gdb_byte *buf, | |
12479 | const struct comp_unit_head *cu_header, | |
12480 | unsigned int *bytes_read_ptr) | |
12481 | { | |
12482 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
12483 | ||
12484 | return read_indirect_string_at_offset (abfd, str_offset); | |
12485 | } | |
12486 | ||
12df843f | 12487 | static ULONGEST |
fe1b8b76 | 12488 | read_unsigned_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 12489 | { |
12df843f | 12490 | ULONGEST result; |
ce5d95e1 | 12491 | unsigned int num_read; |
c906108c SS |
12492 | int i, shift; |
12493 | unsigned char byte; | |
12494 | ||
12495 | result = 0; | |
12496 | shift = 0; | |
12497 | num_read = 0; | |
12498 | i = 0; | |
12499 | while (1) | |
12500 | { | |
fe1b8b76 | 12501 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
12502 | buf++; |
12503 | num_read++; | |
12df843f | 12504 | result |= ((ULONGEST) (byte & 127) << shift); |
c906108c SS |
12505 | if ((byte & 128) == 0) |
12506 | { | |
12507 | break; | |
12508 | } | |
12509 | shift += 7; | |
12510 | } | |
12511 | *bytes_read_ptr = num_read; | |
12512 | return result; | |
12513 | } | |
12514 | ||
12df843f | 12515 | static LONGEST |
fe1b8b76 | 12516 | read_signed_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 12517 | { |
12df843f | 12518 | LONGEST result; |
77e0b926 | 12519 | int i, shift, num_read; |
c906108c SS |
12520 | unsigned char byte; |
12521 | ||
12522 | result = 0; | |
12523 | shift = 0; | |
c906108c SS |
12524 | num_read = 0; |
12525 | i = 0; | |
12526 | while (1) | |
12527 | { | |
fe1b8b76 | 12528 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
12529 | buf++; |
12530 | num_read++; | |
12df843f | 12531 | result |= ((LONGEST) (byte & 127) << shift); |
c906108c SS |
12532 | shift += 7; |
12533 | if ((byte & 128) == 0) | |
12534 | { | |
12535 | break; | |
12536 | } | |
12537 | } | |
77e0b926 | 12538 | if ((shift < 8 * sizeof (result)) && (byte & 0x40)) |
12df843f | 12539 | result |= -(((LONGEST) 1) << shift); |
c906108c SS |
12540 | *bytes_read_ptr = num_read; |
12541 | return result; | |
12542 | } | |
12543 | ||
3019eac3 DE |
12544 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
12545 | ADDR_BASE is the DW_AT_GNU_addr_base attribute or zero. | |
12546 | ADDR_SIZE is the size of addresses from the CU header. */ | |
12547 | ||
12548 | static CORE_ADDR | |
12549 | read_addr_index_1 (unsigned int addr_index, ULONGEST addr_base, int addr_size) | |
12550 | { | |
12551 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
12552 | bfd *abfd = objfile->obfd; | |
12553 | const gdb_byte *info_ptr; | |
12554 | ||
12555 | dwarf2_read_section (objfile, &dwarf2_per_objfile->addr); | |
12556 | if (dwarf2_per_objfile->addr.buffer == NULL) | |
12557 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), | |
12558 | objfile->name); | |
12559 | if (addr_base + addr_index * addr_size >= dwarf2_per_objfile->addr.size) | |
12560 | error (_("DW_FORM_addr_index pointing outside of " | |
12561 | ".debug_addr section [in module %s]"), | |
12562 | objfile->name); | |
12563 | info_ptr = (dwarf2_per_objfile->addr.buffer | |
12564 | + addr_base + addr_index * addr_size); | |
12565 | if (addr_size == 4) | |
12566 | return bfd_get_32 (abfd, info_ptr); | |
12567 | else | |
12568 | return bfd_get_64 (abfd, info_ptr); | |
12569 | } | |
12570 | ||
12571 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
12572 | ||
12573 | static CORE_ADDR | |
12574 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
12575 | { | |
12576 | return read_addr_index_1 (addr_index, cu->addr_base, cu->header.addr_size); | |
12577 | } | |
12578 | ||
12579 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
12580 | ||
12581 | static CORE_ADDR | |
12582 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, gdb_byte *info_ptr, | |
12583 | unsigned int *bytes_read) | |
12584 | { | |
12585 | bfd *abfd = cu->objfile->obfd; | |
12586 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
12587 | ||
12588 | return read_addr_index (cu, addr_index); | |
12589 | } | |
12590 | ||
12591 | /* Data structure to pass results from dwarf2_read_addr_index_reader | |
12592 | back to dwarf2_read_addr_index. */ | |
12593 | ||
12594 | struct dwarf2_read_addr_index_data | |
12595 | { | |
12596 | ULONGEST addr_base; | |
12597 | int addr_size; | |
12598 | }; | |
12599 | ||
12600 | /* die_reader_func for dwarf2_read_addr_index. */ | |
12601 | ||
12602 | static void | |
12603 | dwarf2_read_addr_index_reader (const struct die_reader_specs *reader, | |
12604 | gdb_byte *info_ptr, | |
12605 | struct die_info *comp_unit_die, | |
12606 | int has_children, | |
12607 | void *data) | |
12608 | { | |
12609 | struct dwarf2_cu *cu = reader->cu; | |
12610 | struct dwarf2_read_addr_index_data *aidata = | |
12611 | (struct dwarf2_read_addr_index_data *) data; | |
12612 | ||
12613 | aidata->addr_base = cu->addr_base; | |
12614 | aidata->addr_size = cu->header.addr_size; | |
12615 | } | |
12616 | ||
12617 | /* Given an index in .debug_addr, fetch the value. | |
12618 | NOTE: This can be called during dwarf expression evaluation, | |
12619 | long after the debug information has been read, and thus per_cu->cu | |
12620 | may no longer exist. */ | |
12621 | ||
12622 | CORE_ADDR | |
12623 | dwarf2_read_addr_index (struct dwarf2_per_cu_data *per_cu, | |
12624 | unsigned int addr_index) | |
12625 | { | |
12626 | struct objfile *objfile = per_cu->objfile; | |
12627 | struct dwarf2_cu *cu = per_cu->cu; | |
12628 | ULONGEST addr_base; | |
12629 | int addr_size; | |
12630 | ||
12631 | /* This is intended to be called from outside this file. */ | |
12632 | dw2_setup (objfile); | |
12633 | ||
12634 | /* We need addr_base and addr_size. | |
12635 | If we don't have PER_CU->cu, we have to get it. | |
12636 | Nasty, but the alternative is storing the needed info in PER_CU, | |
12637 | which at this point doesn't seem justified: it's not clear how frequently | |
12638 | it would get used and it would increase the size of every PER_CU. | |
12639 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
12640 | so we're not in uncharted territory here. | |
12641 | Alas we need to be a bit more complicated as addr_base is contained | |
12642 | in the DIE. | |
12643 | ||
12644 | We don't need to read the entire CU(/TU). | |
12645 | We just need the header and top level die. | |
12646 | IWBN to use the aging mechanism to let us lazily later discard the CU. | |
12647 | See however init_cutu_and_read_dies_simple. */ | |
12648 | ||
12649 | if (cu != NULL) | |
12650 | { | |
12651 | addr_base = cu->addr_base; | |
12652 | addr_size = cu->header.addr_size; | |
12653 | } | |
12654 | else | |
12655 | { | |
12656 | struct dwarf2_read_addr_index_data aidata; | |
12657 | ||
12658 | init_cutu_and_read_dies_simple (per_cu, dwarf2_read_addr_index_reader, | |
12659 | &aidata); | |
12660 | addr_base = aidata.addr_base; | |
12661 | addr_size = aidata.addr_size; | |
12662 | } | |
12663 | ||
12664 | return read_addr_index_1 (addr_index, addr_base, addr_size); | |
12665 | } | |
12666 | ||
12667 | /* Given a DW_AT_str_index, fetch the string. */ | |
12668 | ||
12669 | static char * | |
12670 | read_str_index (const struct die_reader_specs *reader, | |
12671 | struct dwarf2_cu *cu, ULONGEST str_index) | |
12672 | { | |
12673 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
12674 | const char *dwo_name = objfile->name; | |
12675 | bfd *abfd = objfile->obfd; | |
12676 | struct dwo_sections *sections = &reader->dwo_file->sections; | |
12677 | gdb_byte *info_ptr; | |
12678 | ULONGEST str_offset; | |
12679 | ||
12680 | dwarf2_read_section (objfile, §ions->str); | |
12681 | dwarf2_read_section (objfile, §ions->str_offsets); | |
12682 | if (sections->str.buffer == NULL) | |
12683 | error (_("DW_FORM_str_index used without .debug_str.dwo section" | |
12684 | " in CU at offset 0x%lx [in module %s]"), | |
12685 | (long) cu->header.offset.sect_off, dwo_name); | |
12686 | if (sections->str_offsets.buffer == NULL) | |
12687 | error (_("DW_FORM_str_index used without .debug_str_offsets.dwo section" | |
12688 | " in CU at offset 0x%lx [in module %s]"), | |
12689 | (long) cu->header.offset.sect_off, dwo_name); | |
12690 | if (str_index * cu->header.offset_size >= sections->str_offsets.size) | |
12691 | error (_("DW_FORM_str_index pointing outside of .debug_str_offsets.dwo" | |
12692 | " section in CU at offset 0x%lx [in module %s]"), | |
12693 | (long) cu->header.offset.sect_off, dwo_name); | |
12694 | info_ptr = (sections->str_offsets.buffer | |
12695 | + str_index * cu->header.offset_size); | |
12696 | if (cu->header.offset_size == 4) | |
12697 | str_offset = bfd_get_32 (abfd, info_ptr); | |
12698 | else | |
12699 | str_offset = bfd_get_64 (abfd, info_ptr); | |
12700 | if (str_offset >= sections->str.size) | |
12701 | error (_("Offset from DW_FORM_str_index pointing outside of" | |
12702 | " .debug_str.dwo section in CU at offset 0x%lx [in module %s]"), | |
12703 | (long) cu->header.offset.sect_off, dwo_name); | |
12704 | return (char *) (sections->str.buffer + str_offset); | |
12705 | } | |
12706 | ||
3019eac3 DE |
12707 | /* Return the length of an LEB128 number in BUF. */ |
12708 | ||
12709 | static int | |
12710 | leb128_size (const gdb_byte *buf) | |
12711 | { | |
12712 | const gdb_byte *begin = buf; | |
12713 | gdb_byte byte; | |
12714 | ||
12715 | while (1) | |
12716 | { | |
12717 | byte = *buf++; | |
12718 | if ((byte & 128) == 0) | |
12719 | return buf - begin; | |
12720 | } | |
12721 | } | |
12722 | ||
c906108c | 12723 | static void |
e142c38c | 12724 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
12725 | { |
12726 | switch (lang) | |
12727 | { | |
12728 | case DW_LANG_C89: | |
76bee0cc | 12729 | case DW_LANG_C99: |
c906108c | 12730 | case DW_LANG_C: |
e142c38c | 12731 | cu->language = language_c; |
c906108c SS |
12732 | break; |
12733 | case DW_LANG_C_plus_plus: | |
e142c38c | 12734 | cu->language = language_cplus; |
c906108c | 12735 | break; |
6aecb9c2 JB |
12736 | case DW_LANG_D: |
12737 | cu->language = language_d; | |
12738 | break; | |
c906108c SS |
12739 | case DW_LANG_Fortran77: |
12740 | case DW_LANG_Fortran90: | |
b21b22e0 | 12741 | case DW_LANG_Fortran95: |
e142c38c | 12742 | cu->language = language_fortran; |
c906108c | 12743 | break; |
a766d390 DE |
12744 | case DW_LANG_Go: |
12745 | cu->language = language_go; | |
12746 | break; | |
c906108c | 12747 | case DW_LANG_Mips_Assembler: |
e142c38c | 12748 | cu->language = language_asm; |
c906108c | 12749 | break; |
bebd888e | 12750 | case DW_LANG_Java: |
e142c38c | 12751 | cu->language = language_java; |
bebd888e | 12752 | break; |
c906108c | 12753 | case DW_LANG_Ada83: |
8aaf0b47 | 12754 | case DW_LANG_Ada95: |
bc5f45f8 JB |
12755 | cu->language = language_ada; |
12756 | break; | |
72019c9c GM |
12757 | case DW_LANG_Modula2: |
12758 | cu->language = language_m2; | |
12759 | break; | |
fe8e67fd PM |
12760 | case DW_LANG_Pascal83: |
12761 | cu->language = language_pascal; | |
12762 | break; | |
22566fbd DJ |
12763 | case DW_LANG_ObjC: |
12764 | cu->language = language_objc; | |
12765 | break; | |
c906108c SS |
12766 | case DW_LANG_Cobol74: |
12767 | case DW_LANG_Cobol85: | |
c906108c | 12768 | default: |
e142c38c | 12769 | cu->language = language_minimal; |
c906108c SS |
12770 | break; |
12771 | } | |
e142c38c | 12772 | cu->language_defn = language_def (cu->language); |
c906108c SS |
12773 | } |
12774 | ||
12775 | /* Return the named attribute or NULL if not there. */ | |
12776 | ||
12777 | static struct attribute * | |
e142c38c | 12778 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 12779 | { |
a48e046c | 12780 | for (;;) |
c906108c | 12781 | { |
a48e046c TT |
12782 | unsigned int i; |
12783 | struct attribute *spec = NULL; | |
12784 | ||
12785 | for (i = 0; i < die->num_attrs; ++i) | |
12786 | { | |
12787 | if (die->attrs[i].name == name) | |
12788 | return &die->attrs[i]; | |
12789 | if (die->attrs[i].name == DW_AT_specification | |
12790 | || die->attrs[i].name == DW_AT_abstract_origin) | |
12791 | spec = &die->attrs[i]; | |
12792 | } | |
12793 | ||
12794 | if (!spec) | |
12795 | break; | |
c906108c | 12796 | |
f2f0e013 | 12797 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 12798 | } |
c5aa993b | 12799 | |
c906108c SS |
12800 | return NULL; |
12801 | } | |
12802 | ||
348e048f DE |
12803 | /* Return the named attribute or NULL if not there, |
12804 | but do not follow DW_AT_specification, etc. | |
12805 | This is for use in contexts where we're reading .debug_types dies. | |
12806 | Following DW_AT_specification, DW_AT_abstract_origin will take us | |
12807 | back up the chain, and we want to go down. */ | |
12808 | ||
12809 | static struct attribute * | |
12810 | dwarf2_attr_no_follow (struct die_info *die, unsigned int name, | |
12811 | struct dwarf2_cu *cu) | |
12812 | { | |
12813 | unsigned int i; | |
12814 | ||
12815 | for (i = 0; i < die->num_attrs; ++i) | |
12816 | if (die->attrs[i].name == name) | |
12817 | return &die->attrs[i]; | |
12818 | ||
12819 | return NULL; | |
12820 | } | |
12821 | ||
05cf31d1 JB |
12822 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
12823 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 12824 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
12825 | |
12826 | static int | |
12827 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
12828 | { | |
12829 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
12830 | ||
12831 | return (attr && DW_UNSND (attr)); | |
12832 | } | |
12833 | ||
3ca72b44 | 12834 | static int |
e142c38c | 12835 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 12836 | { |
05cf31d1 JB |
12837 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
12838 | which value is non-zero. However, we have to be careful with | |
12839 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
12840 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
12841 | end up accidently finding a declaration attribute that belongs | |
12842 | to a different DIE referenced by the specification attribute, | |
12843 | even though the given DIE does not have a declaration attribute. */ | |
12844 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
12845 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
12846 | } |
12847 | ||
63d06c5c | 12848 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 12849 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
12850 | containing the return value on output. If there is no |
12851 | specification, but there is an abstract origin, that is | |
12852 | returned. */ | |
63d06c5c DC |
12853 | |
12854 | static struct die_info * | |
f2f0e013 | 12855 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 12856 | { |
f2f0e013 DJ |
12857 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
12858 | *spec_cu); | |
63d06c5c | 12859 | |
edb3359d DJ |
12860 | if (spec_attr == NULL) |
12861 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
12862 | ||
63d06c5c DC |
12863 | if (spec_attr == NULL) |
12864 | return NULL; | |
12865 | else | |
f2f0e013 | 12866 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 12867 | } |
c906108c | 12868 | |
debd256d | 12869 | /* Free the line_header structure *LH, and any arrays and strings it |
ae2de4f8 DE |
12870 | refers to. |
12871 | NOTE: This is also used as a "cleanup" function. */ | |
12872 | ||
debd256d JB |
12873 | static void |
12874 | free_line_header (struct line_header *lh) | |
12875 | { | |
12876 | if (lh->standard_opcode_lengths) | |
a8bc7b56 | 12877 | xfree (lh->standard_opcode_lengths); |
debd256d JB |
12878 | |
12879 | /* Remember that all the lh->file_names[i].name pointers are | |
12880 | pointers into debug_line_buffer, and don't need to be freed. */ | |
12881 | if (lh->file_names) | |
a8bc7b56 | 12882 | xfree (lh->file_names); |
debd256d JB |
12883 | |
12884 | /* Similarly for the include directory names. */ | |
12885 | if (lh->include_dirs) | |
a8bc7b56 | 12886 | xfree (lh->include_dirs); |
debd256d | 12887 | |
a8bc7b56 | 12888 | xfree (lh); |
debd256d JB |
12889 | } |
12890 | ||
debd256d | 12891 | /* Add an entry to LH's include directory table. */ |
ae2de4f8 | 12892 | |
debd256d JB |
12893 | static void |
12894 | add_include_dir (struct line_header *lh, char *include_dir) | |
c906108c | 12895 | { |
debd256d JB |
12896 | /* Grow the array if necessary. */ |
12897 | if (lh->include_dirs_size == 0) | |
c5aa993b | 12898 | { |
debd256d JB |
12899 | lh->include_dirs_size = 1; /* for testing */ |
12900 | lh->include_dirs = xmalloc (lh->include_dirs_size | |
12901 | * sizeof (*lh->include_dirs)); | |
12902 | } | |
12903 | else if (lh->num_include_dirs >= lh->include_dirs_size) | |
12904 | { | |
12905 | lh->include_dirs_size *= 2; | |
12906 | lh->include_dirs = xrealloc (lh->include_dirs, | |
12907 | (lh->include_dirs_size | |
12908 | * sizeof (*lh->include_dirs))); | |
c5aa993b | 12909 | } |
c906108c | 12910 | |
debd256d JB |
12911 | lh->include_dirs[lh->num_include_dirs++] = include_dir; |
12912 | } | |
6e70227d | 12913 | |
debd256d | 12914 | /* Add an entry to LH's file name table. */ |
ae2de4f8 | 12915 | |
debd256d JB |
12916 | static void |
12917 | add_file_name (struct line_header *lh, | |
12918 | char *name, | |
12919 | unsigned int dir_index, | |
12920 | unsigned int mod_time, | |
12921 | unsigned int length) | |
12922 | { | |
12923 | struct file_entry *fe; | |
12924 | ||
12925 | /* Grow the array if necessary. */ | |
12926 | if (lh->file_names_size == 0) | |
12927 | { | |
12928 | lh->file_names_size = 1; /* for testing */ | |
12929 | lh->file_names = xmalloc (lh->file_names_size | |
12930 | * sizeof (*lh->file_names)); | |
12931 | } | |
12932 | else if (lh->num_file_names >= lh->file_names_size) | |
12933 | { | |
12934 | lh->file_names_size *= 2; | |
12935 | lh->file_names = xrealloc (lh->file_names, | |
12936 | (lh->file_names_size | |
12937 | * sizeof (*lh->file_names))); | |
12938 | } | |
12939 | ||
12940 | fe = &lh->file_names[lh->num_file_names++]; | |
12941 | fe->name = name; | |
12942 | fe->dir_index = dir_index; | |
12943 | fe->mod_time = mod_time; | |
12944 | fe->length = length; | |
aaa75496 | 12945 | fe->included_p = 0; |
cb1df416 | 12946 | fe->symtab = NULL; |
debd256d | 12947 | } |
6e70227d | 12948 | |
debd256d | 12949 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 12950 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 12951 | to a struct line_header, allocated using xmalloc. |
debd256d JB |
12952 | |
12953 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
12954 | the returned object point into the dwarf line section buffer, |
12955 | and must not be freed. */ | |
ae2de4f8 | 12956 | |
debd256d | 12957 | static struct line_header * |
3019eac3 | 12958 | dwarf_decode_line_header (unsigned int offset, struct dwarf2_cu *cu) |
debd256d JB |
12959 | { |
12960 | struct cleanup *back_to; | |
12961 | struct line_header *lh; | |
fe1b8b76 | 12962 | gdb_byte *line_ptr; |
c764a876 | 12963 | unsigned int bytes_read, offset_size; |
debd256d JB |
12964 | int i; |
12965 | char *cur_dir, *cur_file; | |
3019eac3 DE |
12966 | struct dwarf2_section_info *section; |
12967 | bfd *abfd; | |
12968 | ||
12969 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
12970 | DWO file. */ | |
12971 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
12972 | section = &cu->dwo_unit->dwo_file->sections.line; | |
12973 | else | |
12974 | section = &dwarf2_per_objfile->line; | |
debd256d | 12975 | |
3019eac3 DE |
12976 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); |
12977 | if (section->buffer == NULL) | |
debd256d | 12978 | { |
3019eac3 DE |
12979 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
12980 | complaint (&symfile_complaints, _("missing .debug_line.dwo section")); | |
12981 | else | |
12982 | complaint (&symfile_complaints, _("missing .debug_line section")); | |
debd256d JB |
12983 | return 0; |
12984 | } | |
12985 | ||
fceca515 DE |
12986 | /* We can't do this until we know the section is non-empty. |
12987 | Only then do we know we have such a section. */ | |
12988 | abfd = section->asection->owner; | |
12989 | ||
a738430d MK |
12990 | /* Make sure that at least there's room for the total_length field. |
12991 | That could be 12 bytes long, but we're just going to fudge that. */ | |
3019eac3 | 12992 | if (offset + 4 >= section->size) |
debd256d | 12993 | { |
4d3c2250 | 12994 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
12995 | return 0; |
12996 | } | |
12997 | ||
12998 | lh = xmalloc (sizeof (*lh)); | |
12999 | memset (lh, 0, sizeof (*lh)); | |
13000 | back_to = make_cleanup ((make_cleanup_ftype *) free_line_header, | |
13001 | (void *) lh); | |
13002 | ||
3019eac3 | 13003 | line_ptr = section->buffer + offset; |
debd256d | 13004 | |
a738430d | 13005 | /* Read in the header. */ |
6e70227d | 13006 | lh->total_length = |
c764a876 DE |
13007 | read_checked_initial_length_and_offset (abfd, line_ptr, &cu->header, |
13008 | &bytes_read, &offset_size); | |
debd256d | 13009 | line_ptr += bytes_read; |
3019eac3 | 13010 | if (line_ptr + lh->total_length > (section->buffer + section->size)) |
debd256d | 13011 | { |
4d3c2250 | 13012 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
13013 | return 0; |
13014 | } | |
13015 | lh->statement_program_end = line_ptr + lh->total_length; | |
13016 | lh->version = read_2_bytes (abfd, line_ptr); | |
13017 | line_ptr += 2; | |
c764a876 DE |
13018 | lh->header_length = read_offset_1 (abfd, line_ptr, offset_size); |
13019 | line_ptr += offset_size; | |
debd256d JB |
13020 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); |
13021 | line_ptr += 1; | |
2dc7f7b3 TT |
13022 | if (lh->version >= 4) |
13023 | { | |
13024 | lh->maximum_ops_per_instruction = read_1_byte (abfd, line_ptr); | |
13025 | line_ptr += 1; | |
13026 | } | |
13027 | else | |
13028 | lh->maximum_ops_per_instruction = 1; | |
13029 | ||
13030 | if (lh->maximum_ops_per_instruction == 0) | |
13031 | { | |
13032 | lh->maximum_ops_per_instruction = 1; | |
13033 | complaint (&symfile_complaints, | |
3e43a32a MS |
13034 | _("invalid maximum_ops_per_instruction " |
13035 | "in `.debug_line' section")); | |
2dc7f7b3 TT |
13036 | } |
13037 | ||
debd256d JB |
13038 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); |
13039 | line_ptr += 1; | |
13040 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
13041 | line_ptr += 1; | |
13042 | lh->line_range = read_1_byte (abfd, line_ptr); | |
13043 | line_ptr += 1; | |
13044 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
13045 | line_ptr += 1; | |
13046 | lh->standard_opcode_lengths | |
fe1b8b76 | 13047 | = xmalloc (lh->opcode_base * sizeof (lh->standard_opcode_lengths[0])); |
debd256d JB |
13048 | |
13049 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
13050 | for (i = 1; i < lh->opcode_base; ++i) | |
13051 | { | |
13052 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
13053 | line_ptr += 1; | |
13054 | } | |
13055 | ||
a738430d | 13056 | /* Read directory table. */ |
9b1c24c8 | 13057 | while ((cur_dir = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) |
debd256d JB |
13058 | { |
13059 | line_ptr += bytes_read; | |
13060 | add_include_dir (lh, cur_dir); | |
13061 | } | |
13062 | line_ptr += bytes_read; | |
13063 | ||
a738430d | 13064 | /* Read file name table. */ |
9b1c24c8 | 13065 | while ((cur_file = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) |
debd256d JB |
13066 | { |
13067 | unsigned int dir_index, mod_time, length; | |
13068 | ||
13069 | line_ptr += bytes_read; | |
13070 | dir_index = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
13071 | line_ptr += bytes_read; | |
13072 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
13073 | line_ptr += bytes_read; | |
13074 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
13075 | line_ptr += bytes_read; | |
13076 | ||
13077 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
13078 | } | |
13079 | line_ptr += bytes_read; | |
6e70227d | 13080 | lh->statement_program_start = line_ptr; |
debd256d | 13081 | |
3019eac3 | 13082 | if (line_ptr > (section->buffer + section->size)) |
4d3c2250 | 13083 | complaint (&symfile_complaints, |
3e43a32a MS |
13084 | _("line number info header doesn't " |
13085 | "fit in `.debug_line' section")); | |
debd256d JB |
13086 | |
13087 | discard_cleanups (back_to); | |
13088 | return lh; | |
13089 | } | |
c906108c | 13090 | |
c6da4cef DE |
13091 | /* Subroutine of dwarf_decode_lines to simplify it. |
13092 | Return the file name of the psymtab for included file FILE_INDEX | |
13093 | in line header LH of PST. | |
13094 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
13095 | If space for the result is malloc'd, it will be freed by a cleanup. | |
13096 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. */ | |
13097 | ||
13098 | static char * | |
13099 | psymtab_include_file_name (const struct line_header *lh, int file_index, | |
13100 | const struct partial_symtab *pst, | |
13101 | const char *comp_dir) | |
13102 | { | |
13103 | const struct file_entry fe = lh->file_names [file_index]; | |
13104 | char *include_name = fe.name; | |
13105 | char *include_name_to_compare = include_name; | |
13106 | char *dir_name = NULL; | |
72b9f47f TT |
13107 | const char *pst_filename; |
13108 | char *copied_name = NULL; | |
c6da4cef DE |
13109 | int file_is_pst; |
13110 | ||
13111 | if (fe.dir_index) | |
13112 | dir_name = lh->include_dirs[fe.dir_index - 1]; | |
13113 | ||
13114 | if (!IS_ABSOLUTE_PATH (include_name) | |
13115 | && (dir_name != NULL || comp_dir != NULL)) | |
13116 | { | |
13117 | /* Avoid creating a duplicate psymtab for PST. | |
13118 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
13119 | Before we do the comparison, however, we need to account | |
13120 | for DIR_NAME and COMP_DIR. | |
13121 | First prepend dir_name (if non-NULL). If we still don't | |
13122 | have an absolute path prepend comp_dir (if non-NULL). | |
13123 | However, the directory we record in the include-file's | |
13124 | psymtab does not contain COMP_DIR (to match the | |
13125 | corresponding symtab(s)). | |
13126 | ||
13127 | Example: | |
13128 | ||
13129 | bash$ cd /tmp | |
13130 | bash$ gcc -g ./hello.c | |
13131 | include_name = "hello.c" | |
13132 | dir_name = "." | |
13133 | DW_AT_comp_dir = comp_dir = "/tmp" | |
13134 | DW_AT_name = "./hello.c" */ | |
13135 | ||
13136 | if (dir_name != NULL) | |
13137 | { | |
13138 | include_name = concat (dir_name, SLASH_STRING, | |
13139 | include_name, (char *)NULL); | |
13140 | include_name_to_compare = include_name; | |
13141 | make_cleanup (xfree, include_name); | |
13142 | } | |
13143 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
13144 | { | |
13145 | include_name_to_compare = concat (comp_dir, SLASH_STRING, | |
13146 | include_name, (char *)NULL); | |
13147 | } | |
13148 | } | |
13149 | ||
13150 | pst_filename = pst->filename; | |
13151 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) | |
13152 | { | |
72b9f47f TT |
13153 | copied_name = concat (pst->dirname, SLASH_STRING, |
13154 | pst_filename, (char *)NULL); | |
13155 | pst_filename = copied_name; | |
c6da4cef DE |
13156 | } |
13157 | ||
1e3fad37 | 13158 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef DE |
13159 | |
13160 | if (include_name_to_compare != include_name) | |
13161 | xfree (include_name_to_compare); | |
72b9f47f TT |
13162 | if (copied_name != NULL) |
13163 | xfree (copied_name); | |
c6da4cef DE |
13164 | |
13165 | if (file_is_pst) | |
13166 | return NULL; | |
13167 | return include_name; | |
13168 | } | |
13169 | ||
c91513d8 PP |
13170 | /* Ignore this record_line request. */ |
13171 | ||
13172 | static void | |
13173 | noop_record_line (struct subfile *subfile, int line, CORE_ADDR pc) | |
13174 | { | |
13175 | return; | |
13176 | } | |
13177 | ||
f3f5162e DE |
13178 | /* Subroutine of dwarf_decode_lines to simplify it. |
13179 | Process the line number information in LH. */ | |
debd256d | 13180 | |
c906108c | 13181 | static void |
f3f5162e DE |
13182 | dwarf_decode_lines_1 (struct line_header *lh, const char *comp_dir, |
13183 | struct dwarf2_cu *cu, struct partial_symtab *pst) | |
c906108c | 13184 | { |
a8c50c1f | 13185 | gdb_byte *line_ptr, *extended_end; |
fe1b8b76 | 13186 | gdb_byte *line_end; |
a8c50c1f | 13187 | unsigned int bytes_read, extended_len; |
c906108c | 13188 | unsigned char op_code, extended_op, adj_opcode; |
e142c38c DJ |
13189 | CORE_ADDR baseaddr; |
13190 | struct objfile *objfile = cu->objfile; | |
f3f5162e | 13191 | bfd *abfd = objfile->obfd; |
fbf65064 | 13192 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
aaa75496 | 13193 | const int decode_for_pst_p = (pst != NULL); |
f3f5162e | 13194 | struct subfile *last_subfile = NULL; |
c91513d8 PP |
13195 | void (*p_record_line) (struct subfile *subfile, int line, CORE_ADDR pc) |
13196 | = record_line; | |
e142c38c DJ |
13197 | |
13198 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 13199 | |
debd256d JB |
13200 | line_ptr = lh->statement_program_start; |
13201 | line_end = lh->statement_program_end; | |
c906108c SS |
13202 | |
13203 | /* Read the statement sequences until there's nothing left. */ | |
13204 | while (line_ptr < line_end) | |
13205 | { | |
13206 | /* state machine registers */ | |
13207 | CORE_ADDR address = 0; | |
13208 | unsigned int file = 1; | |
13209 | unsigned int line = 1; | |
13210 | unsigned int column = 0; | |
debd256d | 13211 | int is_stmt = lh->default_is_stmt; |
c906108c SS |
13212 | int basic_block = 0; |
13213 | int end_sequence = 0; | |
fbf65064 | 13214 | CORE_ADDR addr; |
2dc7f7b3 | 13215 | unsigned char op_index = 0; |
c906108c | 13216 | |
aaa75496 | 13217 | if (!decode_for_pst_p && lh->num_file_names >= file) |
c906108c | 13218 | { |
aaa75496 | 13219 | /* Start a subfile for the current file of the state machine. */ |
debd256d JB |
13220 | /* lh->include_dirs and lh->file_names are 0-based, but the |
13221 | directory and file name numbers in the statement program | |
13222 | are 1-based. */ | |
13223 | struct file_entry *fe = &lh->file_names[file - 1]; | |
4f1520fb | 13224 | char *dir = NULL; |
a738430d | 13225 | |
debd256d JB |
13226 | if (fe->dir_index) |
13227 | dir = lh->include_dirs[fe->dir_index - 1]; | |
4f1520fb FR |
13228 | |
13229 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
c906108c SS |
13230 | } |
13231 | ||
a738430d | 13232 | /* Decode the table. */ |
c5aa993b | 13233 | while (!end_sequence) |
c906108c SS |
13234 | { |
13235 | op_code = read_1_byte (abfd, line_ptr); | |
13236 | line_ptr += 1; | |
59205f5a JB |
13237 | if (line_ptr > line_end) |
13238 | { | |
13239 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
13240 | break; | |
13241 | } | |
9aa1fe7e | 13242 | |
debd256d | 13243 | if (op_code >= lh->opcode_base) |
6e70227d | 13244 | { |
a738430d | 13245 | /* Special operand. */ |
debd256d | 13246 | adj_opcode = op_code - lh->opcode_base; |
2dc7f7b3 TT |
13247 | address += (((op_index + (adj_opcode / lh->line_range)) |
13248 | / lh->maximum_ops_per_instruction) | |
13249 | * lh->minimum_instruction_length); | |
13250 | op_index = ((op_index + (adj_opcode / lh->line_range)) | |
13251 | % lh->maximum_ops_per_instruction); | |
debd256d | 13252 | line += lh->line_base + (adj_opcode % lh->line_range); |
59205f5a | 13253 | if (lh->num_file_names < file || file == 0) |
25e43795 | 13254 | dwarf2_debug_line_missing_file_complaint (); |
2dc7f7b3 TT |
13255 | /* For now we ignore lines not starting on an |
13256 | instruction boundary. */ | |
13257 | else if (op_index == 0) | |
25e43795 DJ |
13258 | { |
13259 | lh->file_names[file - 1].included_p = 1; | |
ca5f395d | 13260 | if (!decode_for_pst_p && is_stmt) |
fbf65064 UW |
13261 | { |
13262 | if (last_subfile != current_subfile) | |
13263 | { | |
13264 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
13265 | if (last_subfile) | |
c91513d8 | 13266 | (*p_record_line) (last_subfile, 0, addr); |
fbf65064 UW |
13267 | last_subfile = current_subfile; |
13268 | } | |
25e43795 | 13269 | /* Append row to matrix using current values. */ |
7019d805 | 13270 | addr = gdbarch_addr_bits_remove (gdbarch, address); |
c91513d8 | 13271 | (*p_record_line) (current_subfile, line, addr); |
366da635 | 13272 | } |
25e43795 | 13273 | } |
ca5f395d | 13274 | basic_block = 0; |
9aa1fe7e GK |
13275 | } |
13276 | else switch (op_code) | |
c906108c SS |
13277 | { |
13278 | case DW_LNS_extended_op: | |
3e43a32a MS |
13279 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
13280 | &bytes_read); | |
473b7be6 | 13281 | line_ptr += bytes_read; |
a8c50c1f | 13282 | extended_end = line_ptr + extended_len; |
c906108c SS |
13283 | extended_op = read_1_byte (abfd, line_ptr); |
13284 | line_ptr += 1; | |
13285 | switch (extended_op) | |
13286 | { | |
13287 | case DW_LNE_end_sequence: | |
c91513d8 | 13288 | p_record_line = record_line; |
c906108c | 13289 | end_sequence = 1; |
c906108c SS |
13290 | break; |
13291 | case DW_LNE_set_address: | |
e7c27a73 | 13292 | address = read_address (abfd, line_ptr, cu, &bytes_read); |
c91513d8 PP |
13293 | |
13294 | if (address == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
13295 | { | |
13296 | /* This line table is for a function which has been | |
13297 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
13298 | ||
13299 | long line_offset | |
13300 | = line_ptr - dwarf2_per_objfile->line.buffer; | |
13301 | ||
13302 | complaint (&symfile_complaints, | |
13303 | _(".debug_line address at offset 0x%lx is 0 " | |
13304 | "[in module %s]"), | |
bb5ed363 | 13305 | line_offset, objfile->name); |
c91513d8 PP |
13306 | p_record_line = noop_record_line; |
13307 | } | |
13308 | ||
2dc7f7b3 | 13309 | op_index = 0; |
107d2387 AC |
13310 | line_ptr += bytes_read; |
13311 | address += baseaddr; | |
c906108c SS |
13312 | break; |
13313 | case DW_LNE_define_file: | |
debd256d JB |
13314 | { |
13315 | char *cur_file; | |
13316 | unsigned int dir_index, mod_time, length; | |
6e70227d | 13317 | |
3e43a32a MS |
13318 | cur_file = read_direct_string (abfd, line_ptr, |
13319 | &bytes_read); | |
debd256d JB |
13320 | line_ptr += bytes_read; |
13321 | dir_index = | |
13322 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
13323 | line_ptr += bytes_read; | |
13324 | mod_time = | |
13325 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
13326 | line_ptr += bytes_read; | |
13327 | length = | |
13328 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
13329 | line_ptr += bytes_read; | |
13330 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
13331 | } | |
c906108c | 13332 | break; |
d0c6ba3d CC |
13333 | case DW_LNE_set_discriminator: |
13334 | /* The discriminator is not interesting to the debugger; | |
13335 | just ignore it. */ | |
13336 | line_ptr = extended_end; | |
13337 | break; | |
c906108c | 13338 | default: |
4d3c2250 | 13339 | complaint (&symfile_complaints, |
e2e0b3e5 | 13340 | _("mangled .debug_line section")); |
debd256d | 13341 | return; |
c906108c | 13342 | } |
a8c50c1f DJ |
13343 | /* Make sure that we parsed the extended op correctly. If e.g. |
13344 | we expected a different address size than the producer used, | |
13345 | we may have read the wrong number of bytes. */ | |
13346 | if (line_ptr != extended_end) | |
13347 | { | |
13348 | complaint (&symfile_complaints, | |
13349 | _("mangled .debug_line section")); | |
13350 | return; | |
13351 | } | |
c906108c SS |
13352 | break; |
13353 | case DW_LNS_copy: | |
59205f5a | 13354 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
13355 | dwarf2_debug_line_missing_file_complaint (); |
13356 | else | |
366da635 | 13357 | { |
25e43795 | 13358 | lh->file_names[file - 1].included_p = 1; |
ca5f395d | 13359 | if (!decode_for_pst_p && is_stmt) |
fbf65064 UW |
13360 | { |
13361 | if (last_subfile != current_subfile) | |
13362 | { | |
13363 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
13364 | if (last_subfile) | |
c91513d8 | 13365 | (*p_record_line) (last_subfile, 0, addr); |
fbf65064 UW |
13366 | last_subfile = current_subfile; |
13367 | } | |
7019d805 | 13368 | addr = gdbarch_addr_bits_remove (gdbarch, address); |
c91513d8 | 13369 | (*p_record_line) (current_subfile, line, addr); |
fbf65064 | 13370 | } |
366da635 | 13371 | } |
c906108c SS |
13372 | basic_block = 0; |
13373 | break; | |
13374 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
13375 | { |
13376 | CORE_ADDR adjust | |
13377 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
13378 | ||
13379 | address += (((op_index + adjust) | |
13380 | / lh->maximum_ops_per_instruction) | |
13381 | * lh->minimum_instruction_length); | |
13382 | op_index = ((op_index + adjust) | |
13383 | % lh->maximum_ops_per_instruction); | |
13384 | line_ptr += bytes_read; | |
13385 | } | |
c906108c SS |
13386 | break; |
13387 | case DW_LNS_advance_line: | |
13388 | line += read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
13389 | line_ptr += bytes_read; | |
13390 | break; | |
13391 | case DW_LNS_set_file: | |
debd256d | 13392 | { |
a738430d MK |
13393 | /* The arrays lh->include_dirs and lh->file_names are |
13394 | 0-based, but the directory and file name numbers in | |
13395 | the statement program are 1-based. */ | |
debd256d | 13396 | struct file_entry *fe; |
4f1520fb | 13397 | char *dir = NULL; |
a738430d | 13398 | |
debd256d JB |
13399 | file = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
13400 | line_ptr += bytes_read; | |
59205f5a | 13401 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
13402 | dwarf2_debug_line_missing_file_complaint (); |
13403 | else | |
13404 | { | |
13405 | fe = &lh->file_names[file - 1]; | |
13406 | if (fe->dir_index) | |
13407 | dir = lh->include_dirs[fe->dir_index - 1]; | |
13408 | if (!decode_for_pst_p) | |
13409 | { | |
13410 | last_subfile = current_subfile; | |
13411 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
13412 | } | |
13413 | } | |
debd256d | 13414 | } |
c906108c SS |
13415 | break; |
13416 | case DW_LNS_set_column: | |
13417 | column = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
13418 | line_ptr += bytes_read; | |
13419 | break; | |
13420 | case DW_LNS_negate_stmt: | |
13421 | is_stmt = (!is_stmt); | |
13422 | break; | |
13423 | case DW_LNS_set_basic_block: | |
13424 | basic_block = 1; | |
13425 | break; | |
c2c6d25f JM |
13426 | /* Add to the address register of the state machine the |
13427 | address increment value corresponding to special opcode | |
a738430d MK |
13428 | 255. I.e., this value is scaled by the minimum |
13429 | instruction length since special opcode 255 would have | |
b021a221 | 13430 | scaled the increment. */ |
c906108c | 13431 | case DW_LNS_const_add_pc: |
2dc7f7b3 TT |
13432 | { |
13433 | CORE_ADDR adjust = (255 - lh->opcode_base) / lh->line_range; | |
13434 | ||
13435 | address += (((op_index + adjust) | |
13436 | / lh->maximum_ops_per_instruction) | |
13437 | * lh->minimum_instruction_length); | |
13438 | op_index = ((op_index + adjust) | |
13439 | % lh->maximum_ops_per_instruction); | |
13440 | } | |
c906108c SS |
13441 | break; |
13442 | case DW_LNS_fixed_advance_pc: | |
13443 | address += read_2_bytes (abfd, line_ptr); | |
2dc7f7b3 | 13444 | op_index = 0; |
c906108c SS |
13445 | line_ptr += 2; |
13446 | break; | |
9aa1fe7e | 13447 | default: |
a738430d MK |
13448 | { |
13449 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 13450 | int i; |
a738430d | 13451 | |
debd256d | 13452 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
13453 | { |
13454 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
13455 | line_ptr += bytes_read; | |
13456 | } | |
13457 | } | |
c906108c SS |
13458 | } |
13459 | } | |
59205f5a JB |
13460 | if (lh->num_file_names < file || file == 0) |
13461 | dwarf2_debug_line_missing_file_complaint (); | |
13462 | else | |
13463 | { | |
13464 | lh->file_names[file - 1].included_p = 1; | |
13465 | if (!decode_for_pst_p) | |
fbf65064 UW |
13466 | { |
13467 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
c91513d8 | 13468 | (*p_record_line) (current_subfile, 0, addr); |
fbf65064 | 13469 | } |
59205f5a | 13470 | } |
c906108c | 13471 | } |
f3f5162e DE |
13472 | } |
13473 | ||
13474 | /* Decode the Line Number Program (LNP) for the given line_header | |
13475 | structure and CU. The actual information extracted and the type | |
13476 | of structures created from the LNP depends on the value of PST. | |
13477 | ||
13478 | 1. If PST is NULL, then this procedure uses the data from the program | |
13479 | to create all necessary symbol tables, and their linetables. | |
13480 | ||
13481 | 2. If PST is not NULL, this procedure reads the program to determine | |
13482 | the list of files included by the unit represented by PST, and | |
13483 | builds all the associated partial symbol tables. | |
13484 | ||
13485 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
13486 | It is used for relative paths in the line table. | |
13487 | NOTE: When processing partial symtabs (pst != NULL), | |
13488 | comp_dir == pst->dirname. | |
13489 | ||
13490 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
13491 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
13492 | symtab we don't use it in the name of the psymtabs we create. | |
13493 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
13494 | A good testcase for this is mb-inline.exp. */ | |
13495 | ||
13496 | static void | |
13497 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
13498 | struct dwarf2_cu *cu, struct partial_symtab *pst, | |
13499 | int want_line_info) | |
13500 | { | |
13501 | struct objfile *objfile = cu->objfile; | |
13502 | const int decode_for_pst_p = (pst != NULL); | |
13503 | struct subfile *first_subfile = current_subfile; | |
13504 | ||
13505 | if (want_line_info) | |
13506 | dwarf_decode_lines_1 (lh, comp_dir, cu, pst); | |
aaa75496 JB |
13507 | |
13508 | if (decode_for_pst_p) | |
13509 | { | |
13510 | int file_index; | |
13511 | ||
13512 | /* Now that we're done scanning the Line Header Program, we can | |
13513 | create the psymtab of each included file. */ | |
13514 | for (file_index = 0; file_index < lh->num_file_names; file_index++) | |
13515 | if (lh->file_names[file_index].included_p == 1) | |
13516 | { | |
c6da4cef DE |
13517 | char *include_name = |
13518 | psymtab_include_file_name (lh, file_index, pst, comp_dir); | |
13519 | if (include_name != NULL) | |
aaa75496 JB |
13520 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
13521 | } | |
13522 | } | |
cb1df416 DJ |
13523 | else |
13524 | { | |
13525 | /* Make sure a symtab is created for every file, even files | |
13526 | which contain only variables (i.e. no code with associated | |
13527 | line numbers). */ | |
cb1df416 | 13528 | int i; |
cb1df416 DJ |
13529 | |
13530 | for (i = 0; i < lh->num_file_names; i++) | |
13531 | { | |
13532 | char *dir = NULL; | |
f3f5162e | 13533 | struct file_entry *fe; |
9a619af0 | 13534 | |
cb1df416 DJ |
13535 | fe = &lh->file_names[i]; |
13536 | if (fe->dir_index) | |
13537 | dir = lh->include_dirs[fe->dir_index - 1]; | |
13538 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
13539 | ||
13540 | /* Skip the main file; we don't need it, and it must be | |
13541 | allocated last, so that it will show up before the | |
13542 | non-primary symtabs in the objfile's symtab list. */ | |
13543 | if (current_subfile == first_subfile) | |
13544 | continue; | |
13545 | ||
13546 | if (current_subfile->symtab == NULL) | |
13547 | current_subfile->symtab = allocate_symtab (current_subfile->name, | |
bb5ed363 | 13548 | objfile); |
cb1df416 DJ |
13549 | fe->symtab = current_subfile->symtab; |
13550 | } | |
13551 | } | |
c906108c SS |
13552 | } |
13553 | ||
13554 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
13555 | DIRNAME the name of the source directory which contains FILENAME | |
4f1520fb FR |
13556 | or NULL if not known. COMP_DIR is the compilation directory for the |
13557 | linetable's compilation unit or NULL if not known. | |
c906108c SS |
13558 | This routine tries to keep line numbers from identical absolute and |
13559 | relative file names in a common subfile. | |
13560 | ||
13561 | Using the `list' example from the GDB testsuite, which resides in | |
13562 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
13563 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
13564 | ||
c5aa993b JM |
13565 | DW_AT_name: /srcdir/list0.c |
13566 | DW_AT_comp_dir: /compdir | |
357e46e7 | 13567 | files.files[0].name: list0.h |
c5aa993b | 13568 | files.files[0].dir: /srcdir |
357e46e7 | 13569 | files.files[1].name: list0.c |
c5aa993b | 13570 | files.files[1].dir: /srcdir |
c906108c SS |
13571 | |
13572 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
13573 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
13574 | start_subfile will ensure that this happens provided that we pass the | |
13575 | concatenation of files.files[1].dir and files.files[1].name as the | |
13576 | subfile's name. */ | |
c906108c SS |
13577 | |
13578 | static void | |
3e43a32a MS |
13579 | dwarf2_start_subfile (char *filename, const char *dirname, |
13580 | const char *comp_dir) | |
c906108c | 13581 | { |
4f1520fb FR |
13582 | char *fullname; |
13583 | ||
13584 | /* While reading the DIEs, we call start_symtab(DW_AT_name, DW_AT_comp_dir). | |
13585 | `start_symtab' will always pass the contents of DW_AT_comp_dir as | |
13586 | second argument to start_subfile. To be consistent, we do the | |
13587 | same here. In order not to lose the line information directory, | |
13588 | we concatenate it to the filename when it makes sense. | |
13589 | Note that the Dwarf3 standard says (speaking of filenames in line | |
13590 | information): ``The directory index is ignored for file names | |
13591 | that represent full path names''. Thus ignoring dirname in the | |
13592 | `else' branch below isn't an issue. */ | |
c906108c | 13593 | |
d5166ae1 | 13594 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
4f1520fb FR |
13595 | fullname = concat (dirname, SLASH_STRING, filename, (char *)NULL); |
13596 | else | |
13597 | fullname = filename; | |
c906108c | 13598 | |
4f1520fb FR |
13599 | start_subfile (fullname, comp_dir); |
13600 | ||
13601 | if (fullname != filename) | |
13602 | xfree (fullname); | |
c906108c SS |
13603 | } |
13604 | ||
4c2df51b DJ |
13605 | static void |
13606 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 13607 | struct dwarf2_cu *cu) |
4c2df51b | 13608 | { |
e7c27a73 DJ |
13609 | struct objfile *objfile = cu->objfile; |
13610 | struct comp_unit_head *cu_header = &cu->header; | |
13611 | ||
4c2df51b DJ |
13612 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
13613 | code here to turn a symbol with DW_AT_external and a | |
13614 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
13615 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
13616 | with some versions of binutils) where shared libraries could have | |
13617 | relocations against symbols in their debug information - the | |
13618 | minimal symbol would have the right address, but the debug info | |
13619 | would not. It's no longer necessary, because we will explicitly | |
13620 | apply relocations when we read in the debug information now. */ | |
13621 | ||
13622 | /* A DW_AT_location attribute with no contents indicates that a | |
13623 | variable has been optimized away. */ | |
13624 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
13625 | { | |
13626 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; | |
13627 | return; | |
13628 | } | |
13629 | ||
13630 | /* Handle one degenerate form of location expression specially, to | |
13631 | preserve GDB's previous behavior when section offsets are | |
3019eac3 DE |
13632 | specified. If this is just a DW_OP_addr or DW_OP_GNU_addr_index |
13633 | then mark this symbol as LOC_STATIC. */ | |
4c2df51b DJ |
13634 | |
13635 | if (attr_form_is_block (attr) | |
3019eac3 DE |
13636 | && ((DW_BLOCK (attr)->data[0] == DW_OP_addr |
13637 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size) | |
13638 | || (DW_BLOCK (attr)->data[0] == DW_OP_GNU_addr_index | |
13639 | && (DW_BLOCK (attr)->size | |
13640 | == 1 + leb128_size (&DW_BLOCK (attr)->data[1]))))) | |
4c2df51b | 13641 | { |
891d2f0b | 13642 | unsigned int dummy; |
4c2df51b | 13643 | |
3019eac3 DE |
13644 | if (DW_BLOCK (attr)->data[0] == DW_OP_addr) |
13645 | SYMBOL_VALUE_ADDRESS (sym) = | |
13646 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); | |
13647 | else | |
13648 | SYMBOL_VALUE_ADDRESS (sym) = | |
13649 | read_addr_index_from_leb128 (cu, DW_BLOCK (attr)->data + 1, &dummy); | |
907fc202 | 13650 | SYMBOL_CLASS (sym) = LOC_STATIC; |
4c2df51b DJ |
13651 | fixup_symbol_section (sym, objfile); |
13652 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
13653 | SYMBOL_SECTION (sym)); | |
4c2df51b DJ |
13654 | return; |
13655 | } | |
13656 | ||
13657 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
13658 | expression evaluator, and use LOC_COMPUTED only when necessary | |
13659 | (i.e. when the value of a register or memory location is | |
13660 | referenced, or a thread-local block, etc.). Then again, it might | |
13661 | not be worthwhile. I'm assuming that it isn't unless performance | |
13662 | or memory numbers show me otherwise. */ | |
13663 | ||
e7c27a73 | 13664 | dwarf2_symbol_mark_computed (attr, sym, cu); |
4c2df51b | 13665 | SYMBOL_CLASS (sym) = LOC_COMPUTED; |
8be455d7 JK |
13666 | |
13667 | if (SYMBOL_COMPUTED_OPS (sym) == &dwarf2_loclist_funcs) | |
13668 | cu->has_loclist = 1; | |
4c2df51b DJ |
13669 | } |
13670 | ||
c906108c SS |
13671 | /* Given a pointer to a DWARF information entry, figure out if we need |
13672 | to make a symbol table entry for it, and if so, create a new entry | |
13673 | and return a pointer to it. | |
13674 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
13675 | used the passed type. |
13676 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
13677 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
13678 | |
13679 | static struct symbol * | |
34eaf542 TT |
13680 | new_symbol_full (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
13681 | struct symbol *space) | |
c906108c | 13682 | { |
e7c27a73 | 13683 | struct objfile *objfile = cu->objfile; |
c906108c SS |
13684 | struct symbol *sym = NULL; |
13685 | char *name; | |
13686 | struct attribute *attr = NULL; | |
13687 | struct attribute *attr2 = NULL; | |
e142c38c | 13688 | CORE_ADDR baseaddr; |
e37fd15a SW |
13689 | struct pending **list_to_add = NULL; |
13690 | ||
edb3359d | 13691 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c DJ |
13692 | |
13693 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 13694 | |
94af9270 | 13695 | name = dwarf2_name (die, cu); |
c906108c SS |
13696 | if (name) |
13697 | { | |
94af9270 | 13698 | const char *linkagename; |
34eaf542 | 13699 | int suppress_add = 0; |
94af9270 | 13700 | |
34eaf542 TT |
13701 | if (space) |
13702 | sym = space; | |
13703 | else | |
13704 | sym = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symbol); | |
c906108c | 13705 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
13706 | |
13707 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
33e5013e | 13708 | SYMBOL_SET_LANGUAGE (sym, cu->language); |
94af9270 KS |
13709 | linkagename = dwarf2_physname (name, die, cu); |
13710 | SYMBOL_SET_NAMES (sym, linkagename, strlen (linkagename), 0, objfile); | |
c906108c | 13711 | |
f55ee35c JK |
13712 | /* Fortran does not have mangling standard and the mangling does differ |
13713 | between gfortran, iFort etc. */ | |
13714 | if (cu->language == language_fortran | |
b250c185 | 13715 | && symbol_get_demangled_name (&(sym->ginfo)) == NULL) |
29df156d SW |
13716 | symbol_set_demangled_name (&(sym->ginfo), |
13717 | (char *) dwarf2_full_name (name, die, cu), | |
13718 | NULL); | |
f55ee35c | 13719 | |
c906108c | 13720 | /* Default assumptions. |
c5aa993b | 13721 | Use the passed type or decode it from the die. */ |
176620f1 | 13722 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
875dc2fc | 13723 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
13724 | if (type != NULL) |
13725 | SYMBOL_TYPE (sym) = type; | |
13726 | else | |
e7c27a73 | 13727 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
13728 | attr = dwarf2_attr (die, |
13729 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
13730 | cu); | |
c906108c SS |
13731 | if (attr) |
13732 | { | |
13733 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
13734 | } | |
cb1df416 | 13735 | |
edb3359d DJ |
13736 | attr = dwarf2_attr (die, |
13737 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
13738 | cu); | |
cb1df416 DJ |
13739 | if (attr) |
13740 | { | |
13741 | int file_index = DW_UNSND (attr); | |
9a619af0 | 13742 | |
cb1df416 DJ |
13743 | if (cu->line_header == NULL |
13744 | || file_index > cu->line_header->num_file_names) | |
13745 | complaint (&symfile_complaints, | |
13746 | _("file index out of range")); | |
1c3d648d | 13747 | else if (file_index > 0) |
cb1df416 DJ |
13748 | { |
13749 | struct file_entry *fe; | |
9a619af0 | 13750 | |
cb1df416 DJ |
13751 | fe = &cu->line_header->file_names[file_index - 1]; |
13752 | SYMBOL_SYMTAB (sym) = fe->symtab; | |
13753 | } | |
13754 | } | |
13755 | ||
c906108c SS |
13756 | switch (die->tag) |
13757 | { | |
13758 | case DW_TAG_label: | |
e142c38c | 13759 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c SS |
13760 | if (attr) |
13761 | { | |
13762 | SYMBOL_VALUE_ADDRESS (sym) = DW_ADDR (attr) + baseaddr; | |
13763 | } | |
0f5238ed TT |
13764 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
13765 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
c906108c | 13766 | SYMBOL_CLASS (sym) = LOC_LABEL; |
0f5238ed | 13767 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
13768 | break; |
13769 | case DW_TAG_subprogram: | |
13770 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
13771 | finish_block. */ | |
13772 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
e142c38c | 13773 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d JB |
13774 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
13775 | || cu->language == language_ada) | |
c906108c | 13776 | { |
2cfa0c8d JB |
13777 | /* Subprograms marked external are stored as a global symbol. |
13778 | Ada subprograms, whether marked external or not, are always | |
13779 | stored as a global symbol, because we want to be able to | |
13780 | access them globally. For instance, we want to be able | |
13781 | to break on a nested subprogram without having to | |
13782 | specify the context. */ | |
e37fd15a | 13783 | list_to_add = &global_symbols; |
c906108c SS |
13784 | } |
13785 | else | |
13786 | { | |
e37fd15a | 13787 | list_to_add = cu->list_in_scope; |
c906108c SS |
13788 | } |
13789 | break; | |
edb3359d DJ |
13790 | case DW_TAG_inlined_subroutine: |
13791 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
13792 | finish_block. */ | |
13793 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
13794 | SYMBOL_INLINED (sym) = 1; | |
481860b3 | 13795 | list_to_add = cu->list_in_scope; |
edb3359d | 13796 | break; |
34eaf542 TT |
13797 | case DW_TAG_template_value_param: |
13798 | suppress_add = 1; | |
13799 | /* Fall through. */ | |
72929c62 | 13800 | case DW_TAG_constant: |
c906108c | 13801 | case DW_TAG_variable: |
254e6b9e | 13802 | case DW_TAG_member: |
0963b4bd MS |
13803 | /* Compilation with minimal debug info may result in |
13804 | variables with missing type entries. Change the | |
13805 | misleading `void' type to something sensible. */ | |
c906108c | 13806 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) |
64c50499 | 13807 | SYMBOL_TYPE (sym) |
46bf5051 | 13808 | = objfile_type (objfile)->nodebug_data_symbol; |
64c50499 | 13809 | |
e142c38c | 13810 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
13811 | /* In the case of DW_TAG_member, we should only be called for |
13812 | static const members. */ | |
13813 | if (die->tag == DW_TAG_member) | |
13814 | { | |
3863f96c DE |
13815 | /* dwarf2_add_field uses die_is_declaration, |
13816 | so we do the same. */ | |
254e6b9e DE |
13817 | gdb_assert (die_is_declaration (die, cu)); |
13818 | gdb_assert (attr); | |
13819 | } | |
c906108c SS |
13820 | if (attr) |
13821 | { | |
e7c27a73 | 13822 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 13823 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 13824 | if (!suppress_add) |
34eaf542 TT |
13825 | { |
13826 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
e37fd15a | 13827 | list_to_add = &global_symbols; |
34eaf542 | 13828 | else |
e37fd15a | 13829 | list_to_add = cu->list_in_scope; |
34eaf542 | 13830 | } |
c906108c SS |
13831 | break; |
13832 | } | |
e142c38c | 13833 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
13834 | if (attr) |
13835 | { | |
e7c27a73 | 13836 | var_decode_location (attr, sym, cu); |
e142c38c | 13837 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
caac4577 JG |
13838 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
13839 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
13840 | && !dwarf2_per_objfile->has_section_at_zero) | |
13841 | { | |
13842 | /* When a static variable is eliminated by the linker, | |
13843 | the corresponding debug information is not stripped | |
13844 | out, but the variable address is set to null; | |
13845 | do not add such variables into symbol table. */ | |
13846 | } | |
13847 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 13848 | { |
f55ee35c JK |
13849 | /* Workaround gfortran PR debug/40040 - it uses |
13850 | DW_AT_location for variables in -fPIC libraries which may | |
13851 | get overriden by other libraries/executable and get | |
13852 | a different address. Resolve it by the minimal symbol | |
13853 | which may come from inferior's executable using copy | |
13854 | relocation. Make this workaround only for gfortran as for | |
13855 | other compilers GDB cannot guess the minimal symbol | |
13856 | Fortran mangling kind. */ | |
13857 | if (cu->language == language_fortran && die->parent | |
13858 | && die->parent->tag == DW_TAG_module | |
13859 | && cu->producer | |
13860 | && strncmp (cu->producer, "GNU Fortran ", 12) == 0) | |
13861 | SYMBOL_CLASS (sym) = LOC_UNRESOLVED; | |
13862 | ||
1c809c68 TT |
13863 | /* A variable with DW_AT_external is never static, |
13864 | but it may be block-scoped. */ | |
13865 | list_to_add = (cu->list_in_scope == &file_symbols | |
13866 | ? &global_symbols : cu->list_in_scope); | |
1c809c68 | 13867 | } |
c906108c | 13868 | else |
e37fd15a | 13869 | list_to_add = cu->list_in_scope; |
c906108c SS |
13870 | } |
13871 | else | |
13872 | { | |
13873 | /* We do not know the address of this symbol. | |
c5aa993b JM |
13874 | If it is an external symbol and we have type information |
13875 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
13876 | The address of the variable will then be determined from | |
13877 | the minimal symbol table whenever the variable is | |
13878 | referenced. */ | |
e142c38c | 13879 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c | 13880 | if (attr2 && (DW_UNSND (attr2) != 0) |
e142c38c | 13881 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) |
c906108c | 13882 | { |
0fe7935b DJ |
13883 | /* A variable with DW_AT_external is never static, but it |
13884 | may be block-scoped. */ | |
13885 | list_to_add = (cu->list_in_scope == &file_symbols | |
13886 | ? &global_symbols : cu->list_in_scope); | |
13887 | ||
c906108c | 13888 | SYMBOL_CLASS (sym) = LOC_UNRESOLVED; |
c906108c | 13889 | } |
442ddf59 JK |
13890 | else if (!die_is_declaration (die, cu)) |
13891 | { | |
13892 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
13893 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
13894 | if (!suppress_add) |
13895 | list_to_add = cu->list_in_scope; | |
442ddf59 | 13896 | } |
c906108c SS |
13897 | } |
13898 | break; | |
13899 | case DW_TAG_formal_parameter: | |
edb3359d DJ |
13900 | /* If we are inside a function, mark this as an argument. If |
13901 | not, we might be looking at an argument to an inlined function | |
13902 | when we do not have enough information to show inlined frames; | |
13903 | pretend it's a local variable in that case so that the user can | |
13904 | still see it. */ | |
13905 | if (context_stack_depth > 0 | |
13906 | && context_stack[context_stack_depth - 1].name != NULL) | |
13907 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
e142c38c | 13908 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
13909 | if (attr) |
13910 | { | |
e7c27a73 | 13911 | var_decode_location (attr, sym, cu); |
c906108c | 13912 | } |
e142c38c | 13913 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
13914 | if (attr) |
13915 | { | |
e7c27a73 | 13916 | dwarf2_const_value (attr, sym, cu); |
c906108c | 13917 | } |
f346a30d | 13918 | |
e37fd15a | 13919 | list_to_add = cu->list_in_scope; |
c906108c SS |
13920 | break; |
13921 | case DW_TAG_unspecified_parameters: | |
13922 | /* From varargs functions; gdb doesn't seem to have any | |
13923 | interest in this information, so just ignore it for now. | |
13924 | (FIXME?) */ | |
13925 | break; | |
34eaf542 TT |
13926 | case DW_TAG_template_type_param: |
13927 | suppress_add = 1; | |
13928 | /* Fall through. */ | |
c906108c | 13929 | case DW_TAG_class_type: |
680b30c7 | 13930 | case DW_TAG_interface_type: |
c906108c SS |
13931 | case DW_TAG_structure_type: |
13932 | case DW_TAG_union_type: | |
72019c9c | 13933 | case DW_TAG_set_type: |
c906108c SS |
13934 | case DW_TAG_enumeration_type: |
13935 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
176620f1 | 13936 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 13937 | |
63d06c5c | 13938 | { |
987504bb | 13939 | /* NOTE: carlton/2003-11-10: C++ and Java class symbols shouldn't |
63d06c5c DC |
13940 | really ever be static objects: otherwise, if you try |
13941 | to, say, break of a class's method and you're in a file | |
13942 | which doesn't mention that class, it won't work unless | |
13943 | the check for all static symbols in lookup_symbol_aux | |
13944 | saves you. See the OtherFileClass tests in | |
13945 | gdb.c++/namespace.exp. */ | |
13946 | ||
e37fd15a | 13947 | if (!suppress_add) |
34eaf542 | 13948 | { |
34eaf542 TT |
13949 | list_to_add = (cu->list_in_scope == &file_symbols |
13950 | && (cu->language == language_cplus | |
13951 | || cu->language == language_java) | |
13952 | ? &global_symbols : cu->list_in_scope); | |
63d06c5c | 13953 | |
64382290 TT |
13954 | /* The semantics of C++ state that "struct foo { |
13955 | ... }" also defines a typedef for "foo". A Java | |
13956 | class declaration also defines a typedef for the | |
13957 | class. */ | |
13958 | if (cu->language == language_cplus | |
13959 | || cu->language == language_java | |
13960 | || cu->language == language_ada) | |
13961 | { | |
13962 | /* The symbol's name is already allocated along | |
13963 | with this objfile, so we don't need to | |
13964 | duplicate it for the type. */ | |
13965 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
13966 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_SEARCH_NAME (sym); | |
13967 | } | |
63d06c5c DC |
13968 | } |
13969 | } | |
c906108c SS |
13970 | break; |
13971 | case DW_TAG_typedef: | |
63d06c5c DC |
13972 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
13973 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; | |
e37fd15a | 13974 | list_to_add = cu->list_in_scope; |
63d06c5c | 13975 | break; |
c906108c | 13976 | case DW_TAG_base_type: |
a02abb62 | 13977 | case DW_TAG_subrange_type: |
c906108c | 13978 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
176620f1 | 13979 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 13980 | list_to_add = cu->list_in_scope; |
c906108c SS |
13981 | break; |
13982 | case DW_TAG_enumerator: | |
e142c38c | 13983 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
13984 | if (attr) |
13985 | { | |
e7c27a73 | 13986 | dwarf2_const_value (attr, sym, cu); |
c906108c | 13987 | } |
63d06c5c DC |
13988 | { |
13989 | /* NOTE: carlton/2003-11-10: See comment above in the | |
13990 | DW_TAG_class_type, etc. block. */ | |
13991 | ||
e142c38c | 13992 | list_to_add = (cu->list_in_scope == &file_symbols |
987504bb JJ |
13993 | && (cu->language == language_cplus |
13994 | || cu->language == language_java) | |
e142c38c | 13995 | ? &global_symbols : cu->list_in_scope); |
63d06c5c | 13996 | } |
c906108c | 13997 | break; |
5c4e30ca DC |
13998 | case DW_TAG_namespace: |
13999 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
e37fd15a | 14000 | list_to_add = &global_symbols; |
5c4e30ca | 14001 | break; |
c906108c SS |
14002 | default: |
14003 | /* Not a tag we recognize. Hopefully we aren't processing | |
14004 | trash data, but since we must specifically ignore things | |
14005 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 14006 | this point. */ |
e2e0b3e5 | 14007 | complaint (&symfile_complaints, _("unsupported tag: '%s'"), |
4d3c2250 | 14008 | dwarf_tag_name (die->tag)); |
c906108c SS |
14009 | break; |
14010 | } | |
df8a16a1 | 14011 | |
e37fd15a SW |
14012 | if (suppress_add) |
14013 | { | |
14014 | sym->hash_next = objfile->template_symbols; | |
14015 | objfile->template_symbols = sym; | |
14016 | list_to_add = NULL; | |
14017 | } | |
14018 | ||
14019 | if (list_to_add != NULL) | |
14020 | add_symbol_to_list (sym, list_to_add); | |
14021 | ||
df8a16a1 DJ |
14022 | /* For the benefit of old versions of GCC, check for anonymous |
14023 | namespaces based on the demangled name. */ | |
14024 | if (!processing_has_namespace_info | |
94af9270 | 14025 | && cu->language == language_cplus) |
a10964d1 | 14026 | cp_scan_for_anonymous_namespaces (sym, objfile); |
c906108c SS |
14027 | } |
14028 | return (sym); | |
14029 | } | |
14030 | ||
34eaf542 TT |
14031 | /* A wrapper for new_symbol_full that always allocates a new symbol. */ |
14032 | ||
14033 | static struct symbol * | |
14034 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu) | |
14035 | { | |
14036 | return new_symbol_full (die, type, cu, NULL); | |
14037 | } | |
14038 | ||
98bfdba5 PA |
14039 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
14040 | zero-extend it as appropriate for the symbol's type. The DWARF | |
14041 | standard (v4) is not entirely clear about the meaning of using | |
14042 | DW_FORM_dataN for a constant with a signed type, where the type is | |
14043 | wider than the data. The conclusion of a discussion on the DWARF | |
14044 | list was that this is unspecified. We choose to always zero-extend | |
14045 | because that is the interpretation long in use by GCC. */ | |
c906108c | 14046 | |
98bfdba5 PA |
14047 | static gdb_byte * |
14048 | dwarf2_const_value_data (struct attribute *attr, struct type *type, | |
14049 | const char *name, struct obstack *obstack, | |
12df843f | 14050 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 14051 | { |
e7c27a73 | 14052 | struct objfile *objfile = cu->objfile; |
e17a4113 UW |
14053 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
14054 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
14055 | LONGEST l = DW_UNSND (attr); |
14056 | ||
14057 | if (bits < sizeof (*value) * 8) | |
14058 | { | |
14059 | l &= ((LONGEST) 1 << bits) - 1; | |
14060 | *value = l; | |
14061 | } | |
14062 | else if (bits == sizeof (*value) * 8) | |
14063 | *value = l; | |
14064 | else | |
14065 | { | |
14066 | gdb_byte *bytes = obstack_alloc (obstack, bits / 8); | |
14067 | store_unsigned_integer (bytes, bits / 8, byte_order, l); | |
14068 | return bytes; | |
14069 | } | |
14070 | ||
14071 | return NULL; | |
14072 | } | |
14073 | ||
14074 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
14075 | the value does not fit in *VALUE, set *BYTES - either already | |
14076 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
14077 | or, set *BATON, if we translated the constant to a location | |
14078 | expression. */ | |
14079 | ||
14080 | static void | |
14081 | dwarf2_const_value_attr (struct attribute *attr, struct type *type, | |
14082 | const char *name, struct obstack *obstack, | |
14083 | struct dwarf2_cu *cu, | |
12df843f | 14084 | LONGEST *value, gdb_byte **bytes, |
98bfdba5 PA |
14085 | struct dwarf2_locexpr_baton **baton) |
14086 | { | |
14087 | struct objfile *objfile = cu->objfile; | |
14088 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c | 14089 | struct dwarf_block *blk; |
98bfdba5 PA |
14090 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
14091 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
14092 | ||
14093 | *value = 0; | |
14094 | *bytes = NULL; | |
14095 | *baton = NULL; | |
c906108c SS |
14096 | |
14097 | switch (attr->form) | |
14098 | { | |
14099 | case DW_FORM_addr: | |
3019eac3 | 14100 | case DW_FORM_GNU_addr_index: |
ac56253d | 14101 | { |
ac56253d TT |
14102 | gdb_byte *data; |
14103 | ||
98bfdba5 PA |
14104 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
14105 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 14106 | cu_header->addr_size, |
98bfdba5 | 14107 | TYPE_LENGTH (type)); |
ac56253d TT |
14108 | /* Symbols of this form are reasonably rare, so we just |
14109 | piggyback on the existing location code rather than writing | |
14110 | a new implementation of symbol_computed_ops. */ | |
98bfdba5 PA |
14111 | *baton = obstack_alloc (&objfile->objfile_obstack, |
14112 | sizeof (struct dwarf2_locexpr_baton)); | |
14113 | (*baton)->per_cu = cu->per_cu; | |
14114 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 14115 | |
98bfdba5 PA |
14116 | (*baton)->size = 2 + cu_header->addr_size; |
14117 | data = obstack_alloc (&objfile->objfile_obstack, (*baton)->size); | |
14118 | (*baton)->data = data; | |
ac56253d TT |
14119 | |
14120 | data[0] = DW_OP_addr; | |
14121 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
14122 | byte_order, DW_ADDR (attr)); | |
14123 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 14124 | } |
c906108c | 14125 | break; |
4ac36638 | 14126 | case DW_FORM_string: |
93b5768b | 14127 | case DW_FORM_strp: |
3019eac3 | 14128 | case DW_FORM_GNU_str_index: |
98bfdba5 PA |
14129 | /* DW_STRING is already allocated on the objfile obstack, point |
14130 | directly to it. */ | |
14131 | *bytes = (gdb_byte *) DW_STRING (attr); | |
93b5768b | 14132 | break; |
c906108c SS |
14133 | case DW_FORM_block1: |
14134 | case DW_FORM_block2: | |
14135 | case DW_FORM_block4: | |
14136 | case DW_FORM_block: | |
2dc7f7b3 | 14137 | case DW_FORM_exprloc: |
c906108c | 14138 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
14139 | if (TYPE_LENGTH (type) != blk->size) |
14140 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
14141 | TYPE_LENGTH (type)); | |
14142 | *bytes = blk->data; | |
c906108c | 14143 | break; |
2df3850c JM |
14144 | |
14145 | /* The DW_AT_const_value attributes are supposed to carry the | |
14146 | symbol's value "represented as it would be on the target | |
14147 | architecture." By the time we get here, it's already been | |
14148 | converted to host endianness, so we just need to sign- or | |
14149 | zero-extend it as appropriate. */ | |
14150 | case DW_FORM_data1: | |
3e43a32a MS |
14151 | *bytes = dwarf2_const_value_data (attr, type, name, |
14152 | obstack, cu, value, 8); | |
2df3850c | 14153 | break; |
c906108c | 14154 | case DW_FORM_data2: |
3e43a32a MS |
14155 | *bytes = dwarf2_const_value_data (attr, type, name, |
14156 | obstack, cu, value, 16); | |
2df3850c | 14157 | break; |
c906108c | 14158 | case DW_FORM_data4: |
3e43a32a MS |
14159 | *bytes = dwarf2_const_value_data (attr, type, name, |
14160 | obstack, cu, value, 32); | |
2df3850c | 14161 | break; |
c906108c | 14162 | case DW_FORM_data8: |
3e43a32a MS |
14163 | *bytes = dwarf2_const_value_data (attr, type, name, |
14164 | obstack, cu, value, 64); | |
2df3850c JM |
14165 | break; |
14166 | ||
c906108c | 14167 | case DW_FORM_sdata: |
98bfdba5 | 14168 | *value = DW_SND (attr); |
2df3850c JM |
14169 | break; |
14170 | ||
c906108c | 14171 | case DW_FORM_udata: |
98bfdba5 | 14172 | *value = DW_UNSND (attr); |
c906108c | 14173 | break; |
2df3850c | 14174 | |
c906108c | 14175 | default: |
4d3c2250 | 14176 | complaint (&symfile_complaints, |
e2e0b3e5 | 14177 | _("unsupported const value attribute form: '%s'"), |
4d3c2250 | 14178 | dwarf_form_name (attr->form)); |
98bfdba5 | 14179 | *value = 0; |
c906108c SS |
14180 | break; |
14181 | } | |
14182 | } | |
14183 | ||
2df3850c | 14184 | |
98bfdba5 PA |
14185 | /* Copy constant value from an attribute to a symbol. */ |
14186 | ||
2df3850c | 14187 | static void |
98bfdba5 PA |
14188 | dwarf2_const_value (struct attribute *attr, struct symbol *sym, |
14189 | struct dwarf2_cu *cu) | |
2df3850c | 14190 | { |
98bfdba5 PA |
14191 | struct objfile *objfile = cu->objfile; |
14192 | struct comp_unit_head *cu_header = &cu->header; | |
12df843f | 14193 | LONGEST value; |
98bfdba5 PA |
14194 | gdb_byte *bytes; |
14195 | struct dwarf2_locexpr_baton *baton; | |
2df3850c | 14196 | |
98bfdba5 PA |
14197 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
14198 | SYMBOL_PRINT_NAME (sym), | |
14199 | &objfile->objfile_obstack, cu, | |
14200 | &value, &bytes, &baton); | |
2df3850c | 14201 | |
98bfdba5 PA |
14202 | if (baton != NULL) |
14203 | { | |
14204 | SYMBOL_COMPUTED_OPS (sym) = &dwarf2_locexpr_funcs; | |
14205 | SYMBOL_LOCATION_BATON (sym) = baton; | |
14206 | SYMBOL_CLASS (sym) = LOC_COMPUTED; | |
14207 | } | |
14208 | else if (bytes != NULL) | |
14209 | { | |
14210 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
14211 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; | |
14212 | } | |
14213 | else | |
14214 | { | |
14215 | SYMBOL_VALUE (sym) = value; | |
14216 | SYMBOL_CLASS (sym) = LOC_CONST; | |
14217 | } | |
2df3850c JM |
14218 | } |
14219 | ||
c906108c SS |
14220 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
14221 | ||
14222 | static struct type * | |
e7c27a73 | 14223 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14224 | { |
c906108c | 14225 | struct attribute *type_attr; |
c906108c | 14226 | |
e142c38c | 14227 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
14228 | if (!type_attr) |
14229 | { | |
14230 | /* A missing DW_AT_type represents a void type. */ | |
46bf5051 | 14231 | return objfile_type (cu->objfile)->builtin_void; |
c906108c | 14232 | } |
348e048f | 14233 | |
673bfd45 | 14234 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
14235 | } |
14236 | ||
b4ba55a1 JB |
14237 | /* True iff CU's producer generates GNAT Ada auxiliary information |
14238 | that allows to find parallel types through that information instead | |
14239 | of having to do expensive parallel lookups by type name. */ | |
14240 | ||
14241 | static int | |
14242 | need_gnat_info (struct dwarf2_cu *cu) | |
14243 | { | |
14244 | /* FIXME: brobecker/2010-10-12: As of now, only the AdaCore version | |
14245 | of GNAT produces this auxiliary information, without any indication | |
14246 | that it is produced. Part of enhancing the FSF version of GNAT | |
14247 | to produce that information will be to put in place an indicator | |
14248 | that we can use in order to determine whether the descriptive type | |
14249 | info is available or not. One suggestion that has been made is | |
14250 | to use a new attribute, attached to the CU die. For now, assume | |
14251 | that the descriptive type info is not available. */ | |
14252 | return 0; | |
14253 | } | |
14254 | ||
b4ba55a1 JB |
14255 | /* Return the auxiliary type of the die in question using its |
14256 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
14257 | attribute is not present. */ | |
14258 | ||
14259 | static struct type * | |
14260 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
14261 | { | |
b4ba55a1 | 14262 | struct attribute *type_attr; |
b4ba55a1 JB |
14263 | |
14264 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
14265 | if (!type_attr) | |
14266 | return NULL; | |
14267 | ||
673bfd45 | 14268 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
14269 | } |
14270 | ||
14271 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
14272 | descriptive type accordingly. */ | |
14273 | ||
14274 | static void | |
14275 | set_descriptive_type (struct type *type, struct die_info *die, | |
14276 | struct dwarf2_cu *cu) | |
14277 | { | |
14278 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
14279 | ||
14280 | if (descriptive_type) | |
14281 | { | |
14282 | ALLOCATE_GNAT_AUX_TYPE (type); | |
14283 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
14284 | } | |
14285 | } | |
14286 | ||
c906108c SS |
14287 | /* Return the containing type of the die in question using its |
14288 | DW_AT_containing_type attribute. */ | |
14289 | ||
14290 | static struct type * | |
e7c27a73 | 14291 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14292 | { |
c906108c | 14293 | struct attribute *type_attr; |
c906108c | 14294 | |
e142c38c | 14295 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
14296 | if (!type_attr) |
14297 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
14298 | "[in module %s]"), cu->objfile->name); | |
14299 | ||
673bfd45 | 14300 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
14301 | } |
14302 | ||
673bfd45 DE |
14303 | /* Look up the type of DIE in CU using its type attribute ATTR. |
14304 | If there is no type substitute an error marker. */ | |
14305 | ||
c906108c | 14306 | static struct type * |
673bfd45 DE |
14307 | lookup_die_type (struct die_info *die, struct attribute *attr, |
14308 | struct dwarf2_cu *cu) | |
c906108c | 14309 | { |
bb5ed363 | 14310 | struct objfile *objfile = cu->objfile; |
f792889a DJ |
14311 | struct type *this_type; |
14312 | ||
673bfd45 DE |
14313 | /* First see if we have it cached. */ |
14314 | ||
14315 | if (is_ref_attr (attr)) | |
14316 | { | |
b64f50a1 | 14317 | sect_offset offset = dwarf2_get_ref_die_offset (attr); |
673bfd45 DE |
14318 | |
14319 | this_type = get_die_type_at_offset (offset, cu->per_cu); | |
14320 | } | |
55f1336d | 14321 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 DE |
14322 | { |
14323 | struct signatured_type *sig_type = DW_SIGNATURED_TYPE (attr); | |
673bfd45 DE |
14324 | |
14325 | /* sig_type will be NULL if the signatured type is missing from | |
14326 | the debug info. */ | |
14327 | if (sig_type == NULL) | |
14328 | error (_("Dwarf Error: Cannot find signatured DIE referenced from DIE " | |
14329 | "at 0x%x [in module %s]"), | |
b64f50a1 | 14330 | die->offset.sect_off, objfile->name); |
673bfd45 | 14331 | |
3019eac3 DE |
14332 | gdb_assert (sig_type->per_cu.is_debug_types); |
14333 | /* If we haven't filled in type_offset_in_section yet, then we | |
14334 | haven't read the type in yet. */ | |
14335 | this_type = NULL; | |
14336 | if (sig_type->type_offset_in_section.sect_off != 0) | |
14337 | { | |
14338 | this_type = | |
14339 | get_die_type_at_offset (sig_type->type_offset_in_section, | |
14340 | &sig_type->per_cu); | |
14341 | } | |
673bfd45 DE |
14342 | } |
14343 | else | |
14344 | { | |
14345 | dump_die_for_error (die); | |
14346 | error (_("Dwarf Error: Bad type attribute %s [in module %s]"), | |
bb5ed363 | 14347 | dwarf_attr_name (attr->name), objfile->name); |
673bfd45 DE |
14348 | } |
14349 | ||
14350 | /* If not cached we need to read it in. */ | |
14351 | ||
14352 | if (this_type == NULL) | |
14353 | { | |
14354 | struct die_info *type_die; | |
14355 | struct dwarf2_cu *type_cu = cu; | |
14356 | ||
14357 | type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
3019eac3 DE |
14358 | /* If we found the type now, it's probably because the type came |
14359 | from an inter-CU reference and the type's CU got expanded before | |
14360 | ours. */ | |
14361 | this_type = get_die_type (type_die, type_cu); | |
14362 | if (this_type == NULL) | |
14363 | this_type = read_type_die_1 (type_die, type_cu); | |
673bfd45 DE |
14364 | } |
14365 | ||
14366 | /* If we still don't have a type use an error marker. */ | |
14367 | ||
14368 | if (this_type == NULL) | |
c906108c | 14369 | { |
b00fdb78 TT |
14370 | char *message, *saved; |
14371 | ||
14372 | /* read_type_die already issued a complaint. */ | |
14373 | message = xstrprintf (_("<unknown type in %s, CU 0x%x, DIE 0x%x>"), | |
bb5ed363 | 14374 | objfile->name, |
b64f50a1 JK |
14375 | cu->header.offset.sect_off, |
14376 | die->offset.sect_off); | |
bb5ed363 | 14377 | saved = obstack_copy0 (&objfile->objfile_obstack, |
b00fdb78 TT |
14378 | message, strlen (message)); |
14379 | xfree (message); | |
14380 | ||
bb5ed363 | 14381 | this_type = init_type (TYPE_CODE_ERROR, 0, 0, saved, objfile); |
c906108c | 14382 | } |
673bfd45 | 14383 | |
f792889a | 14384 | return this_type; |
c906108c SS |
14385 | } |
14386 | ||
673bfd45 DE |
14387 | /* Return the type in DIE, CU. |
14388 | Returns NULL for invalid types. | |
14389 | ||
14390 | This first does a lookup in the appropriate type_hash table, | |
14391 | and only reads the die in if necessary. | |
14392 | ||
14393 | NOTE: This can be called when reading in partial or full symbols. */ | |
14394 | ||
f792889a | 14395 | static struct type * |
e7c27a73 | 14396 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14397 | { |
f792889a DJ |
14398 | struct type *this_type; |
14399 | ||
14400 | this_type = get_die_type (die, cu); | |
14401 | if (this_type) | |
14402 | return this_type; | |
14403 | ||
673bfd45 DE |
14404 | return read_type_die_1 (die, cu); |
14405 | } | |
14406 | ||
14407 | /* Read the type in DIE, CU. | |
14408 | Returns NULL for invalid types. */ | |
14409 | ||
14410 | static struct type * | |
14411 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
14412 | { | |
14413 | struct type *this_type = NULL; | |
14414 | ||
c906108c SS |
14415 | switch (die->tag) |
14416 | { | |
14417 | case DW_TAG_class_type: | |
680b30c7 | 14418 | case DW_TAG_interface_type: |
c906108c SS |
14419 | case DW_TAG_structure_type: |
14420 | case DW_TAG_union_type: | |
f792889a | 14421 | this_type = read_structure_type (die, cu); |
c906108c SS |
14422 | break; |
14423 | case DW_TAG_enumeration_type: | |
f792889a | 14424 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
14425 | break; |
14426 | case DW_TAG_subprogram: | |
14427 | case DW_TAG_subroutine_type: | |
edb3359d | 14428 | case DW_TAG_inlined_subroutine: |
f792889a | 14429 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
14430 | break; |
14431 | case DW_TAG_array_type: | |
f792889a | 14432 | this_type = read_array_type (die, cu); |
c906108c | 14433 | break; |
72019c9c | 14434 | case DW_TAG_set_type: |
f792889a | 14435 | this_type = read_set_type (die, cu); |
72019c9c | 14436 | break; |
c906108c | 14437 | case DW_TAG_pointer_type: |
f792889a | 14438 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
14439 | break; |
14440 | case DW_TAG_ptr_to_member_type: | |
f792889a | 14441 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
14442 | break; |
14443 | case DW_TAG_reference_type: | |
f792889a | 14444 | this_type = read_tag_reference_type (die, cu); |
c906108c SS |
14445 | break; |
14446 | case DW_TAG_const_type: | |
f792889a | 14447 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
14448 | break; |
14449 | case DW_TAG_volatile_type: | |
f792889a | 14450 | this_type = read_tag_volatile_type (die, cu); |
c906108c SS |
14451 | break; |
14452 | case DW_TAG_string_type: | |
f792889a | 14453 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
14454 | break; |
14455 | case DW_TAG_typedef: | |
f792889a | 14456 | this_type = read_typedef (die, cu); |
c906108c | 14457 | break; |
a02abb62 | 14458 | case DW_TAG_subrange_type: |
f792889a | 14459 | this_type = read_subrange_type (die, cu); |
a02abb62 | 14460 | break; |
c906108c | 14461 | case DW_TAG_base_type: |
f792889a | 14462 | this_type = read_base_type (die, cu); |
c906108c | 14463 | break; |
81a17f79 | 14464 | case DW_TAG_unspecified_type: |
f792889a | 14465 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 14466 | break; |
0114d602 DJ |
14467 | case DW_TAG_namespace: |
14468 | this_type = read_namespace_type (die, cu); | |
14469 | break; | |
f55ee35c JK |
14470 | case DW_TAG_module: |
14471 | this_type = read_module_type (die, cu); | |
14472 | break; | |
c906108c | 14473 | default: |
3e43a32a MS |
14474 | complaint (&symfile_complaints, |
14475 | _("unexpected tag in read_type_die: '%s'"), | |
4d3c2250 | 14476 | dwarf_tag_name (die->tag)); |
c906108c SS |
14477 | break; |
14478 | } | |
63d06c5c | 14479 | |
f792889a | 14480 | return this_type; |
63d06c5c DC |
14481 | } |
14482 | ||
abc72ce4 DE |
14483 | /* See if we can figure out if the class lives in a namespace. We do |
14484 | this by looking for a member function; its demangled name will | |
14485 | contain namespace info, if there is any. | |
14486 | Return the computed name or NULL. | |
14487 | Space for the result is allocated on the objfile's obstack. | |
14488 | This is the full-die version of guess_partial_die_structure_name. | |
14489 | In this case we know DIE has no useful parent. */ | |
14490 | ||
14491 | static char * | |
14492 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) | |
14493 | { | |
14494 | struct die_info *spec_die; | |
14495 | struct dwarf2_cu *spec_cu; | |
14496 | struct die_info *child; | |
14497 | ||
14498 | spec_cu = cu; | |
14499 | spec_die = die_specification (die, &spec_cu); | |
14500 | if (spec_die != NULL) | |
14501 | { | |
14502 | die = spec_die; | |
14503 | cu = spec_cu; | |
14504 | } | |
14505 | ||
14506 | for (child = die->child; | |
14507 | child != NULL; | |
14508 | child = child->sibling) | |
14509 | { | |
14510 | if (child->tag == DW_TAG_subprogram) | |
14511 | { | |
14512 | struct attribute *attr; | |
14513 | ||
14514 | attr = dwarf2_attr (child, DW_AT_linkage_name, cu); | |
14515 | if (attr == NULL) | |
14516 | attr = dwarf2_attr (child, DW_AT_MIPS_linkage_name, cu); | |
14517 | if (attr != NULL) | |
14518 | { | |
14519 | char *actual_name | |
14520 | = language_class_name_from_physname (cu->language_defn, | |
14521 | DW_STRING (attr)); | |
14522 | char *name = NULL; | |
14523 | ||
14524 | if (actual_name != NULL) | |
14525 | { | |
14526 | char *die_name = dwarf2_name (die, cu); | |
14527 | ||
14528 | if (die_name != NULL | |
14529 | && strcmp (die_name, actual_name) != 0) | |
14530 | { | |
14531 | /* Strip off the class name from the full name. | |
14532 | We want the prefix. */ | |
14533 | int die_name_len = strlen (die_name); | |
14534 | int actual_name_len = strlen (actual_name); | |
14535 | ||
14536 | /* Test for '::' as a sanity check. */ | |
14537 | if (actual_name_len > die_name_len + 2 | |
3e43a32a MS |
14538 | && actual_name[actual_name_len |
14539 | - die_name_len - 1] == ':') | |
abc72ce4 DE |
14540 | name = |
14541 | obsavestring (actual_name, | |
14542 | actual_name_len - die_name_len - 2, | |
14543 | &cu->objfile->objfile_obstack); | |
14544 | } | |
14545 | } | |
14546 | xfree (actual_name); | |
14547 | return name; | |
14548 | } | |
14549 | } | |
14550 | } | |
14551 | ||
14552 | return NULL; | |
14553 | } | |
14554 | ||
96408a79 SA |
14555 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
14556 | prefix part in such case. See | |
14557 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
14558 | ||
14559 | static char * | |
14560 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) | |
14561 | { | |
14562 | struct attribute *attr; | |
14563 | char *base; | |
14564 | ||
14565 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
14566 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
14567 | return NULL; | |
14568 | ||
14569 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
14570 | if (attr != NULL && DW_STRING (attr) != NULL) | |
14571 | return NULL; | |
14572 | ||
14573 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
14574 | if (attr == NULL) | |
14575 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
14576 | if (attr == NULL || DW_STRING (attr) == NULL) | |
14577 | return NULL; | |
14578 | ||
14579 | /* dwarf2_name had to be already called. */ | |
14580 | gdb_assert (DW_STRING_IS_CANONICAL (attr)); | |
14581 | ||
14582 | /* Strip the base name, keep any leading namespaces/classes. */ | |
14583 | base = strrchr (DW_STRING (attr), ':'); | |
14584 | if (base == NULL || base == DW_STRING (attr) || base[-1] != ':') | |
14585 | return ""; | |
14586 | ||
14587 | return obsavestring (DW_STRING (attr), &base[-1] - DW_STRING (attr), | |
14588 | &cu->objfile->objfile_obstack); | |
14589 | } | |
14590 | ||
fdde2d81 | 14591 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 14592 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 14593 | |
0114d602 DJ |
14594 | For example, if we're within the method foo() in the following |
14595 | code: | |
14596 | ||
14597 | namespace N { | |
14598 | class C { | |
14599 | void foo () { | |
14600 | } | |
14601 | }; | |
14602 | } | |
14603 | ||
14604 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 14605 | |
0d5cff50 | 14606 | static const char * |
e142c38c | 14607 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 14608 | { |
0114d602 DJ |
14609 | struct die_info *parent, *spec_die; |
14610 | struct dwarf2_cu *spec_cu; | |
14611 | struct type *parent_type; | |
96408a79 | 14612 | char *retval; |
63d06c5c | 14613 | |
f55ee35c JK |
14614 | if (cu->language != language_cplus && cu->language != language_java |
14615 | && cu->language != language_fortran) | |
0114d602 DJ |
14616 | return ""; |
14617 | ||
96408a79 SA |
14618 | retval = anonymous_struct_prefix (die, cu); |
14619 | if (retval) | |
14620 | return retval; | |
14621 | ||
0114d602 DJ |
14622 | /* We have to be careful in the presence of DW_AT_specification. |
14623 | For example, with GCC 3.4, given the code | |
14624 | ||
14625 | namespace N { | |
14626 | void foo() { | |
14627 | // Definition of N::foo. | |
14628 | } | |
14629 | } | |
14630 | ||
14631 | then we'll have a tree of DIEs like this: | |
14632 | ||
14633 | 1: DW_TAG_compile_unit | |
14634 | 2: DW_TAG_namespace // N | |
14635 | 3: DW_TAG_subprogram // declaration of N::foo | |
14636 | 4: DW_TAG_subprogram // definition of N::foo | |
14637 | DW_AT_specification // refers to die #3 | |
14638 | ||
14639 | Thus, when processing die #4, we have to pretend that we're in | |
14640 | the context of its DW_AT_specification, namely the contex of die | |
14641 | #3. */ | |
14642 | spec_cu = cu; | |
14643 | spec_die = die_specification (die, &spec_cu); | |
14644 | if (spec_die == NULL) | |
14645 | parent = die->parent; | |
14646 | else | |
63d06c5c | 14647 | { |
0114d602 DJ |
14648 | parent = spec_die->parent; |
14649 | cu = spec_cu; | |
63d06c5c | 14650 | } |
0114d602 DJ |
14651 | |
14652 | if (parent == NULL) | |
14653 | return ""; | |
98bfdba5 PA |
14654 | else if (parent->building_fullname) |
14655 | { | |
14656 | const char *name; | |
14657 | const char *parent_name; | |
14658 | ||
14659 | /* It has been seen on RealView 2.2 built binaries, | |
14660 | DW_TAG_template_type_param types actually _defined_ as | |
14661 | children of the parent class: | |
14662 | ||
14663 | enum E {}; | |
14664 | template class <class Enum> Class{}; | |
14665 | Class<enum E> class_e; | |
14666 | ||
14667 | 1: DW_TAG_class_type (Class) | |
14668 | 2: DW_TAG_enumeration_type (E) | |
14669 | 3: DW_TAG_enumerator (enum1:0) | |
14670 | 3: DW_TAG_enumerator (enum2:1) | |
14671 | ... | |
14672 | 2: DW_TAG_template_type_param | |
14673 | DW_AT_type DW_FORM_ref_udata (E) | |
14674 | ||
14675 | Besides being broken debug info, it can put GDB into an | |
14676 | infinite loop. Consider: | |
14677 | ||
14678 | When we're building the full name for Class<E>, we'll start | |
14679 | at Class, and go look over its template type parameters, | |
14680 | finding E. We'll then try to build the full name of E, and | |
14681 | reach here. We're now trying to build the full name of E, | |
14682 | and look over the parent DIE for containing scope. In the | |
14683 | broken case, if we followed the parent DIE of E, we'd again | |
14684 | find Class, and once again go look at its template type | |
14685 | arguments, etc., etc. Simply don't consider such parent die | |
14686 | as source-level parent of this die (it can't be, the language | |
14687 | doesn't allow it), and break the loop here. */ | |
14688 | name = dwarf2_name (die, cu); | |
14689 | parent_name = dwarf2_name (parent, cu); | |
14690 | complaint (&symfile_complaints, | |
14691 | _("template param type '%s' defined within parent '%s'"), | |
14692 | name ? name : "<unknown>", | |
14693 | parent_name ? parent_name : "<unknown>"); | |
14694 | return ""; | |
14695 | } | |
63d06c5c | 14696 | else |
0114d602 DJ |
14697 | switch (parent->tag) |
14698 | { | |
63d06c5c | 14699 | case DW_TAG_namespace: |
0114d602 | 14700 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
14701 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
14702 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
14703 | Work around this problem here. */ | |
14704 | if (cu->language == language_cplus | |
14705 | && strcmp (TYPE_TAG_NAME (parent_type), "::") == 0) | |
14706 | return ""; | |
0114d602 DJ |
14707 | /* We give a name to even anonymous namespaces. */ |
14708 | return TYPE_TAG_NAME (parent_type); | |
63d06c5c | 14709 | case DW_TAG_class_type: |
680b30c7 | 14710 | case DW_TAG_interface_type: |
63d06c5c | 14711 | case DW_TAG_structure_type: |
0114d602 | 14712 | case DW_TAG_union_type: |
f55ee35c | 14713 | case DW_TAG_module: |
0114d602 DJ |
14714 | parent_type = read_type_die (parent, cu); |
14715 | if (TYPE_TAG_NAME (parent_type) != NULL) | |
14716 | return TYPE_TAG_NAME (parent_type); | |
14717 | else | |
14718 | /* An anonymous structure is only allowed non-static data | |
14719 | members; no typedefs, no member functions, et cetera. | |
14720 | So it does not need a prefix. */ | |
14721 | return ""; | |
abc72ce4 | 14722 | case DW_TAG_compile_unit: |
95554aad | 14723 | case DW_TAG_partial_unit: |
abc72ce4 DE |
14724 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
14725 | if (cu->language == language_cplus | |
8b70b953 | 14726 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
14727 | && die->child != NULL |
14728 | && (die->tag == DW_TAG_class_type | |
14729 | || die->tag == DW_TAG_structure_type | |
14730 | || die->tag == DW_TAG_union_type)) | |
14731 | { | |
14732 | char *name = guess_full_die_structure_name (die, cu); | |
14733 | if (name != NULL) | |
14734 | return name; | |
14735 | } | |
14736 | return ""; | |
63d06c5c | 14737 | default: |
8176b9b8 | 14738 | return determine_prefix (parent, cu); |
63d06c5c | 14739 | } |
63d06c5c DC |
14740 | } |
14741 | ||
3e43a32a MS |
14742 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
14743 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
14744 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
14745 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
14746 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 14747 | |
f55ee35c | 14748 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
14749 | |
14750 | static char * | |
f55ee35c JK |
14751 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
14752 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 14753 | { |
f55ee35c | 14754 | const char *lead = ""; |
5c315b68 | 14755 | const char *sep; |
63d06c5c | 14756 | |
3e43a32a MS |
14757 | if (suffix == NULL || suffix[0] == '\0' |
14758 | || prefix == NULL || prefix[0] == '\0') | |
987504bb JJ |
14759 | sep = ""; |
14760 | else if (cu->language == language_java) | |
14761 | sep = "."; | |
f55ee35c JK |
14762 | else if (cu->language == language_fortran && physname) |
14763 | { | |
14764 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
14765 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
14766 | ||
14767 | lead = "__"; | |
14768 | sep = "_MOD_"; | |
14769 | } | |
987504bb JJ |
14770 | else |
14771 | sep = "::"; | |
63d06c5c | 14772 | |
6dd47d34 DE |
14773 | if (prefix == NULL) |
14774 | prefix = ""; | |
14775 | if (suffix == NULL) | |
14776 | suffix = ""; | |
14777 | ||
987504bb JJ |
14778 | if (obs == NULL) |
14779 | { | |
3e43a32a MS |
14780 | char *retval |
14781 | = xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1); | |
9a619af0 | 14782 | |
f55ee35c JK |
14783 | strcpy (retval, lead); |
14784 | strcat (retval, prefix); | |
6dd47d34 DE |
14785 | strcat (retval, sep); |
14786 | strcat (retval, suffix); | |
63d06c5c DC |
14787 | return retval; |
14788 | } | |
987504bb JJ |
14789 | else |
14790 | { | |
14791 | /* We have an obstack. */ | |
f55ee35c | 14792 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 14793 | } |
63d06c5c DC |
14794 | } |
14795 | ||
c906108c SS |
14796 | /* Return sibling of die, NULL if no sibling. */ |
14797 | ||
f9aca02d | 14798 | static struct die_info * |
fba45db2 | 14799 | sibling_die (struct die_info *die) |
c906108c | 14800 | { |
639d11d3 | 14801 | return die->sibling; |
c906108c SS |
14802 | } |
14803 | ||
71c25dea TT |
14804 | /* Get name of a die, return NULL if not found. */ |
14805 | ||
14806 | static char * | |
14807 | dwarf2_canonicalize_name (char *name, struct dwarf2_cu *cu, | |
14808 | struct obstack *obstack) | |
14809 | { | |
14810 | if (name && cu->language == language_cplus) | |
14811 | { | |
14812 | char *canon_name = cp_canonicalize_string (name); | |
14813 | ||
14814 | if (canon_name != NULL) | |
14815 | { | |
14816 | if (strcmp (canon_name, name) != 0) | |
14817 | name = obsavestring (canon_name, strlen (canon_name), | |
14818 | obstack); | |
14819 | xfree (canon_name); | |
14820 | } | |
14821 | } | |
14822 | ||
14823 | return name; | |
c906108c SS |
14824 | } |
14825 | ||
9219021c DC |
14826 | /* Get name of a die, return NULL if not found. */ |
14827 | ||
14828 | static char * | |
e142c38c | 14829 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
14830 | { |
14831 | struct attribute *attr; | |
14832 | ||
e142c38c | 14833 | attr = dwarf2_attr (die, DW_AT_name, cu); |
53832f31 TT |
14834 | if ((!attr || !DW_STRING (attr)) |
14835 | && die->tag != DW_TAG_class_type | |
14836 | && die->tag != DW_TAG_interface_type | |
14837 | && die->tag != DW_TAG_structure_type | |
14838 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
14839 | return NULL; |
14840 | ||
14841 | switch (die->tag) | |
14842 | { | |
14843 | case DW_TAG_compile_unit: | |
95554aad | 14844 | case DW_TAG_partial_unit: |
71c25dea TT |
14845 | /* Compilation units have a DW_AT_name that is a filename, not |
14846 | a source language identifier. */ | |
14847 | case DW_TAG_enumeration_type: | |
14848 | case DW_TAG_enumerator: | |
14849 | /* These tags always have simple identifiers already; no need | |
14850 | to canonicalize them. */ | |
14851 | return DW_STRING (attr); | |
907af001 | 14852 | |
418835cc KS |
14853 | case DW_TAG_subprogram: |
14854 | /* Java constructors will all be named "<init>", so return | |
14855 | the class name when we see this special case. */ | |
14856 | if (cu->language == language_java | |
14857 | && DW_STRING (attr) != NULL | |
14858 | && strcmp (DW_STRING (attr), "<init>") == 0) | |
14859 | { | |
14860 | struct dwarf2_cu *spec_cu = cu; | |
14861 | struct die_info *spec_die; | |
14862 | ||
14863 | /* GCJ will output '<init>' for Java constructor names. | |
14864 | For this special case, return the name of the parent class. */ | |
14865 | ||
14866 | /* GCJ may output suprogram DIEs with AT_specification set. | |
14867 | If so, use the name of the specified DIE. */ | |
14868 | spec_die = die_specification (die, &spec_cu); | |
14869 | if (spec_die != NULL) | |
14870 | return dwarf2_name (spec_die, spec_cu); | |
14871 | ||
14872 | do | |
14873 | { | |
14874 | die = die->parent; | |
14875 | if (die->tag == DW_TAG_class_type) | |
14876 | return dwarf2_name (die, cu); | |
14877 | } | |
95554aad TT |
14878 | while (die->tag != DW_TAG_compile_unit |
14879 | && die->tag != DW_TAG_partial_unit); | |
418835cc | 14880 | } |
907af001 UW |
14881 | break; |
14882 | ||
14883 | case DW_TAG_class_type: | |
14884 | case DW_TAG_interface_type: | |
14885 | case DW_TAG_structure_type: | |
14886 | case DW_TAG_union_type: | |
14887 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
14888 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
14889 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
14890 | and GCC 4.4. We work around this problem by ignoring these. */ | |
53832f31 TT |
14891 | if (attr && DW_STRING (attr) |
14892 | && (strncmp (DW_STRING (attr), "._", 2) == 0 | |
14893 | || strncmp (DW_STRING (attr), "<anonymous", 10) == 0)) | |
907af001 | 14894 | return NULL; |
53832f31 TT |
14895 | |
14896 | /* GCC might emit a nameless typedef that has a linkage name. See | |
14897 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
14898 | if (!attr || DW_STRING (attr) == NULL) | |
14899 | { | |
df5c6c50 | 14900 | char *demangled = NULL; |
53832f31 TT |
14901 | |
14902 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
14903 | if (attr == NULL) | |
14904 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
14905 | ||
14906 | if (attr == NULL || DW_STRING (attr) == NULL) | |
14907 | return NULL; | |
14908 | ||
df5c6c50 JK |
14909 | /* Avoid demangling DW_STRING (attr) the second time on a second |
14910 | call for the same DIE. */ | |
14911 | if (!DW_STRING_IS_CANONICAL (attr)) | |
14912 | demangled = cplus_demangle (DW_STRING (attr), DMGL_TYPES); | |
53832f31 TT |
14913 | |
14914 | if (demangled) | |
14915 | { | |
96408a79 SA |
14916 | char *base; |
14917 | ||
53832f31 | 14918 | /* FIXME: we already did this for the partial symbol... */ |
96408a79 SA |
14919 | DW_STRING (attr) = obsavestring (demangled, strlen (demangled), |
14920 | &cu->objfile->objfile_obstack); | |
53832f31 TT |
14921 | DW_STRING_IS_CANONICAL (attr) = 1; |
14922 | xfree (demangled); | |
96408a79 SA |
14923 | |
14924 | /* Strip any leading namespaces/classes, keep only the base name. | |
14925 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
14926 | base = strrchr (DW_STRING (attr), ':'); | |
14927 | if (base && base > DW_STRING (attr) && base[-1] == ':') | |
14928 | return &base[1]; | |
14929 | else | |
14930 | return DW_STRING (attr); | |
53832f31 TT |
14931 | } |
14932 | } | |
907af001 UW |
14933 | break; |
14934 | ||
71c25dea | 14935 | default: |
907af001 UW |
14936 | break; |
14937 | } | |
14938 | ||
14939 | if (!DW_STRING_IS_CANONICAL (attr)) | |
14940 | { | |
14941 | DW_STRING (attr) | |
14942 | = dwarf2_canonicalize_name (DW_STRING (attr), cu, | |
14943 | &cu->objfile->objfile_obstack); | |
14944 | DW_STRING_IS_CANONICAL (attr) = 1; | |
71c25dea | 14945 | } |
907af001 | 14946 | return DW_STRING (attr); |
9219021c DC |
14947 | } |
14948 | ||
14949 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
14950 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
14951 | containing the return value on output. */ | |
9219021c DC |
14952 | |
14953 | static struct die_info * | |
f2f0e013 | 14954 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
14955 | { |
14956 | struct attribute *attr; | |
9219021c | 14957 | |
f2f0e013 | 14958 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
14959 | if (attr == NULL) |
14960 | return NULL; | |
14961 | ||
f2f0e013 | 14962 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
14963 | } |
14964 | ||
c906108c SS |
14965 | /* Convert a DIE tag into its string name. */ |
14966 | ||
f39c6ffd | 14967 | static const char * |
aa1ee363 | 14968 | dwarf_tag_name (unsigned tag) |
c906108c | 14969 | { |
f39c6ffd TT |
14970 | const char *name = get_DW_TAG_name (tag); |
14971 | ||
14972 | if (name == NULL) | |
14973 | return "DW_TAG_<unknown>"; | |
14974 | ||
14975 | return name; | |
c906108c SS |
14976 | } |
14977 | ||
14978 | /* Convert a DWARF attribute code into its string name. */ | |
14979 | ||
f39c6ffd | 14980 | static const char * |
aa1ee363 | 14981 | dwarf_attr_name (unsigned attr) |
c906108c | 14982 | { |
f39c6ffd TT |
14983 | const char *name; |
14984 | ||
c764a876 | 14985 | #ifdef MIPS /* collides with DW_AT_HP_block_index */ |
f39c6ffd TT |
14986 | if (attr == DW_AT_MIPS_fde) |
14987 | return "DW_AT_MIPS_fde"; | |
14988 | #else | |
14989 | if (attr == DW_AT_HP_block_index) | |
14990 | return "DW_AT_HP_block_index"; | |
c764a876 | 14991 | #endif |
f39c6ffd TT |
14992 | |
14993 | name = get_DW_AT_name (attr); | |
14994 | ||
14995 | if (name == NULL) | |
14996 | return "DW_AT_<unknown>"; | |
14997 | ||
14998 | return name; | |
c906108c SS |
14999 | } |
15000 | ||
15001 | /* Convert a DWARF value form code into its string name. */ | |
15002 | ||
f39c6ffd | 15003 | static const char * |
aa1ee363 | 15004 | dwarf_form_name (unsigned form) |
c906108c | 15005 | { |
f39c6ffd TT |
15006 | const char *name = get_DW_FORM_name (form); |
15007 | ||
15008 | if (name == NULL) | |
15009 | return "DW_FORM_<unknown>"; | |
15010 | ||
15011 | return name; | |
c906108c SS |
15012 | } |
15013 | ||
15014 | static char * | |
fba45db2 | 15015 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
15016 | { |
15017 | if (mybool) | |
15018 | return "TRUE"; | |
15019 | else | |
15020 | return "FALSE"; | |
15021 | } | |
15022 | ||
15023 | /* Convert a DWARF type code into its string name. */ | |
15024 | ||
f39c6ffd | 15025 | static const char * |
aa1ee363 | 15026 | dwarf_type_encoding_name (unsigned enc) |
c906108c | 15027 | { |
f39c6ffd | 15028 | const char *name = get_DW_ATE_name (enc); |
c906108c | 15029 | |
f39c6ffd TT |
15030 | if (name == NULL) |
15031 | return "DW_ATE_<unknown>"; | |
c906108c | 15032 | |
f39c6ffd | 15033 | return name; |
c906108c | 15034 | } |
c906108c | 15035 | |
f9aca02d | 15036 | static void |
d97bc12b | 15037 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
15038 | { |
15039 | unsigned int i; | |
15040 | ||
d97bc12b DE |
15041 | print_spaces (indent, f); |
15042 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset 0x%x)\n", | |
b64f50a1 | 15043 | dwarf_tag_name (die->tag), die->abbrev, die->offset.sect_off); |
d97bc12b DE |
15044 | |
15045 | if (die->parent != NULL) | |
15046 | { | |
15047 | print_spaces (indent, f); | |
15048 | fprintf_unfiltered (f, " parent at offset: 0x%x\n", | |
b64f50a1 | 15049 | die->parent->offset.sect_off); |
d97bc12b DE |
15050 | } |
15051 | ||
15052 | print_spaces (indent, f); | |
15053 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 15054 | dwarf_bool_name (die->child != NULL)); |
c906108c | 15055 | |
d97bc12b DE |
15056 | print_spaces (indent, f); |
15057 | fprintf_unfiltered (f, " attributes:\n"); | |
15058 | ||
c906108c SS |
15059 | for (i = 0; i < die->num_attrs; ++i) |
15060 | { | |
d97bc12b DE |
15061 | print_spaces (indent, f); |
15062 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
15063 | dwarf_attr_name (die->attrs[i].name), |
15064 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 15065 | |
c906108c SS |
15066 | switch (die->attrs[i].form) |
15067 | { | |
c906108c | 15068 | case DW_FORM_addr: |
3019eac3 | 15069 | case DW_FORM_GNU_addr_index: |
d97bc12b | 15070 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 15071 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
15072 | break; |
15073 | case DW_FORM_block2: | |
15074 | case DW_FORM_block4: | |
15075 | case DW_FORM_block: | |
15076 | case DW_FORM_block1: | |
3e43a32a MS |
15077 | fprintf_unfiltered (f, "block: size %d", |
15078 | DW_BLOCK (&die->attrs[i])->size); | |
c906108c | 15079 | break; |
2dc7f7b3 TT |
15080 | case DW_FORM_exprloc: |
15081 | fprintf_unfiltered (f, "expression: size %u", | |
15082 | DW_BLOCK (&die->attrs[i])->size); | |
15083 | break; | |
4568ecf9 DE |
15084 | case DW_FORM_ref_addr: |
15085 | fprintf_unfiltered (f, "ref address: "); | |
15086 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
15087 | break; | |
10b3939b DJ |
15088 | case DW_FORM_ref1: |
15089 | case DW_FORM_ref2: | |
15090 | case DW_FORM_ref4: | |
4568ecf9 DE |
15091 | case DW_FORM_ref8: |
15092 | case DW_FORM_ref_udata: | |
d97bc12b | 15093 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
4568ecf9 | 15094 | (long) (DW_UNSND (&die->attrs[i]))); |
10b3939b | 15095 | break; |
c906108c SS |
15096 | case DW_FORM_data1: |
15097 | case DW_FORM_data2: | |
15098 | case DW_FORM_data4: | |
ce5d95e1 | 15099 | case DW_FORM_data8: |
c906108c SS |
15100 | case DW_FORM_udata: |
15101 | case DW_FORM_sdata: | |
43bbcdc2 PH |
15102 | fprintf_unfiltered (f, "constant: %s", |
15103 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 15104 | break; |
2dc7f7b3 TT |
15105 | case DW_FORM_sec_offset: |
15106 | fprintf_unfiltered (f, "section offset: %s", | |
15107 | pulongest (DW_UNSND (&die->attrs[i]))); | |
15108 | break; | |
55f1336d | 15109 | case DW_FORM_ref_sig8: |
348e048f DE |
15110 | if (DW_SIGNATURED_TYPE (&die->attrs[i]) != NULL) |
15111 | fprintf_unfiltered (f, "signatured type, offset: 0x%x", | |
b64f50a1 | 15112 | DW_SIGNATURED_TYPE (&die->attrs[i])->per_cu.offset.sect_off); |
348e048f DE |
15113 | else |
15114 | fprintf_unfiltered (f, "signatured type, offset: unknown"); | |
15115 | break; | |
c906108c | 15116 | case DW_FORM_string: |
4bdf3d34 | 15117 | case DW_FORM_strp: |
3019eac3 | 15118 | case DW_FORM_GNU_str_index: |
8285870a | 15119 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 15120 | DW_STRING (&die->attrs[i]) |
8285870a JK |
15121 | ? DW_STRING (&die->attrs[i]) : "", |
15122 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
15123 | break; |
15124 | case DW_FORM_flag: | |
15125 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 15126 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 15127 | else |
d97bc12b | 15128 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 15129 | break; |
2dc7f7b3 TT |
15130 | case DW_FORM_flag_present: |
15131 | fprintf_unfiltered (f, "flag: TRUE"); | |
15132 | break; | |
a8329558 | 15133 | case DW_FORM_indirect: |
0963b4bd MS |
15134 | /* The reader will have reduced the indirect form to |
15135 | the "base form" so this form should not occur. */ | |
3e43a32a MS |
15136 | fprintf_unfiltered (f, |
15137 | "unexpected attribute form: DW_FORM_indirect"); | |
a8329558 | 15138 | break; |
c906108c | 15139 | default: |
d97bc12b | 15140 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 15141 | die->attrs[i].form); |
d97bc12b | 15142 | break; |
c906108c | 15143 | } |
d97bc12b | 15144 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
15145 | } |
15146 | } | |
15147 | ||
f9aca02d | 15148 | static void |
d97bc12b | 15149 | dump_die_for_error (struct die_info *die) |
c906108c | 15150 | { |
d97bc12b DE |
15151 | dump_die_shallow (gdb_stderr, 0, die); |
15152 | } | |
15153 | ||
15154 | static void | |
15155 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
15156 | { | |
15157 | int indent = level * 4; | |
15158 | ||
15159 | gdb_assert (die != NULL); | |
15160 | ||
15161 | if (level >= max_level) | |
15162 | return; | |
15163 | ||
15164 | dump_die_shallow (f, indent, die); | |
15165 | ||
15166 | if (die->child != NULL) | |
c906108c | 15167 | { |
d97bc12b DE |
15168 | print_spaces (indent, f); |
15169 | fprintf_unfiltered (f, " Children:"); | |
15170 | if (level + 1 < max_level) | |
15171 | { | |
15172 | fprintf_unfiltered (f, "\n"); | |
15173 | dump_die_1 (f, level + 1, max_level, die->child); | |
15174 | } | |
15175 | else | |
15176 | { | |
3e43a32a MS |
15177 | fprintf_unfiltered (f, |
15178 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
15179 | } |
15180 | } | |
15181 | ||
15182 | if (die->sibling != NULL && level > 0) | |
15183 | { | |
15184 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
15185 | } |
15186 | } | |
15187 | ||
d97bc12b DE |
15188 | /* This is called from the pdie macro in gdbinit.in. |
15189 | It's not static so gcc will keep a copy callable from gdb. */ | |
15190 | ||
15191 | void | |
15192 | dump_die (struct die_info *die, int max_level) | |
15193 | { | |
15194 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
15195 | } | |
15196 | ||
f9aca02d | 15197 | static void |
51545339 | 15198 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 15199 | { |
51545339 | 15200 | void **slot; |
c906108c | 15201 | |
b64f50a1 JK |
15202 | slot = htab_find_slot_with_hash (cu->die_hash, die, die->offset.sect_off, |
15203 | INSERT); | |
51545339 DJ |
15204 | |
15205 | *slot = die; | |
c906108c SS |
15206 | } |
15207 | ||
b64f50a1 JK |
15208 | /* DW_ADDR is always stored already as sect_offset; despite for the forms |
15209 | besides DW_FORM_ref_addr it is stored as cu_offset in the DWARF file. */ | |
15210 | ||
93311388 DE |
15211 | static int |
15212 | is_ref_attr (struct attribute *attr) | |
c906108c | 15213 | { |
c906108c SS |
15214 | switch (attr->form) |
15215 | { | |
15216 | case DW_FORM_ref_addr: | |
c906108c SS |
15217 | case DW_FORM_ref1: |
15218 | case DW_FORM_ref2: | |
15219 | case DW_FORM_ref4: | |
613e1657 | 15220 | case DW_FORM_ref8: |
c906108c | 15221 | case DW_FORM_ref_udata: |
93311388 | 15222 | return 1; |
c906108c | 15223 | default: |
93311388 | 15224 | return 0; |
c906108c | 15225 | } |
93311388 DE |
15226 | } |
15227 | ||
b64f50a1 JK |
15228 | /* Return DIE offset of ATTR. Return 0 with complaint if ATTR is not of the |
15229 | required kind. */ | |
15230 | ||
15231 | static sect_offset | |
93311388 DE |
15232 | dwarf2_get_ref_die_offset (struct attribute *attr) |
15233 | { | |
4568ecf9 | 15234 | sect_offset retval = { DW_UNSND (attr) }; |
b64f50a1 | 15235 | |
93311388 | 15236 | if (is_ref_attr (attr)) |
b64f50a1 | 15237 | return retval; |
93311388 | 15238 | |
b64f50a1 | 15239 | retval.sect_off = 0; |
93311388 DE |
15240 | complaint (&symfile_complaints, |
15241 | _("unsupported die ref attribute form: '%s'"), | |
15242 | dwarf_form_name (attr->form)); | |
b64f50a1 | 15243 | return retval; |
c906108c SS |
15244 | } |
15245 | ||
43bbcdc2 PH |
15246 | /* Return the constant value held by ATTR. Return DEFAULT_VALUE if |
15247 | * the value held by the attribute is not constant. */ | |
a02abb62 | 15248 | |
43bbcdc2 | 15249 | static LONGEST |
a02abb62 JB |
15250 | dwarf2_get_attr_constant_value (struct attribute *attr, int default_value) |
15251 | { | |
15252 | if (attr->form == DW_FORM_sdata) | |
15253 | return DW_SND (attr); | |
15254 | else if (attr->form == DW_FORM_udata | |
15255 | || attr->form == DW_FORM_data1 | |
15256 | || attr->form == DW_FORM_data2 | |
15257 | || attr->form == DW_FORM_data4 | |
15258 | || attr->form == DW_FORM_data8) | |
15259 | return DW_UNSND (attr); | |
15260 | else | |
15261 | { | |
3e43a32a MS |
15262 | complaint (&symfile_complaints, |
15263 | _("Attribute value is not a constant (%s)"), | |
a02abb62 JB |
15264 | dwarf_form_name (attr->form)); |
15265 | return default_value; | |
15266 | } | |
15267 | } | |
15268 | ||
348e048f DE |
15269 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
15270 | On entry *REF_CU is the CU of SRC_DIE. | |
15271 | On exit *REF_CU is the CU of the result. */ | |
15272 | ||
15273 | static struct die_info * | |
15274 | follow_die_ref_or_sig (struct die_info *src_die, struct attribute *attr, | |
15275 | struct dwarf2_cu **ref_cu) | |
15276 | { | |
15277 | struct die_info *die; | |
15278 | ||
15279 | if (is_ref_attr (attr)) | |
15280 | die = follow_die_ref (src_die, attr, ref_cu); | |
55f1336d | 15281 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
15282 | die = follow_die_sig (src_die, attr, ref_cu); |
15283 | else | |
15284 | { | |
15285 | dump_die_for_error (src_die); | |
15286 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
15287 | (*ref_cu)->objfile->name); | |
15288 | } | |
15289 | ||
15290 | return die; | |
03dd20cc DJ |
15291 | } |
15292 | ||
5c631832 | 15293 | /* Follow reference OFFSET. |
673bfd45 DE |
15294 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
15295 | On exit *REF_CU is the CU of the result. | |
15296 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 15297 | |
f9aca02d | 15298 | static struct die_info * |
b64f50a1 | 15299 | follow_die_offset (sect_offset offset, struct dwarf2_cu **ref_cu) |
c906108c | 15300 | { |
10b3939b | 15301 | struct die_info temp_die; |
f2f0e013 | 15302 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
10b3939b | 15303 | |
348e048f DE |
15304 | gdb_assert (cu->per_cu != NULL); |
15305 | ||
98bfdba5 PA |
15306 | target_cu = cu; |
15307 | ||
3019eac3 | 15308 | if (cu->per_cu->is_debug_types) |
348e048f DE |
15309 | { |
15310 | /* .debug_types CUs cannot reference anything outside their CU. | |
15311 | If they need to, they have to reference a signatured type via | |
55f1336d | 15312 | DW_FORM_ref_sig8. */ |
348e048f | 15313 | if (! offset_in_cu_p (&cu->header, offset)) |
5c631832 | 15314 | return NULL; |
348e048f DE |
15315 | } |
15316 | else if (! offset_in_cu_p (&cu->header, offset)) | |
10b3939b DJ |
15317 | { |
15318 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 15319 | |
45452591 | 15320 | per_cu = dwarf2_find_containing_comp_unit (offset, cu->objfile); |
03dd20cc DJ |
15321 | |
15322 | /* If necessary, add it to the queue and load its DIEs. */ | |
95554aad TT |
15323 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
15324 | load_full_comp_unit (per_cu, cu->language); | |
03dd20cc | 15325 | |
10b3939b DJ |
15326 | target_cu = per_cu->cu; |
15327 | } | |
98bfdba5 PA |
15328 | else if (cu->dies == NULL) |
15329 | { | |
15330 | /* We're loading full DIEs during partial symbol reading. */ | |
15331 | gdb_assert (dwarf2_per_objfile->reading_partial_symbols); | |
95554aad | 15332 | load_full_comp_unit (cu->per_cu, language_minimal); |
98bfdba5 | 15333 | } |
c906108c | 15334 | |
f2f0e013 | 15335 | *ref_cu = target_cu; |
51545339 | 15336 | temp_die.offset = offset; |
b64f50a1 | 15337 | return htab_find_with_hash (target_cu->die_hash, &temp_die, offset.sect_off); |
5c631832 | 15338 | } |
10b3939b | 15339 | |
5c631832 JK |
15340 | /* Follow reference attribute ATTR of SRC_DIE. |
15341 | On entry *REF_CU is the CU of SRC_DIE. | |
15342 | On exit *REF_CU is the CU of the result. */ | |
15343 | ||
15344 | static struct die_info * | |
15345 | follow_die_ref (struct die_info *src_die, struct attribute *attr, | |
15346 | struct dwarf2_cu **ref_cu) | |
15347 | { | |
b64f50a1 | 15348 | sect_offset offset = dwarf2_get_ref_die_offset (attr); |
5c631832 JK |
15349 | struct dwarf2_cu *cu = *ref_cu; |
15350 | struct die_info *die; | |
15351 | ||
15352 | die = follow_die_offset (offset, ref_cu); | |
15353 | if (!die) | |
15354 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced from DIE " | |
15355 | "at 0x%x [in module %s]"), | |
b64f50a1 | 15356 | offset.sect_off, src_die->offset.sect_off, cu->objfile->name); |
348e048f | 15357 | |
5c631832 JK |
15358 | return die; |
15359 | } | |
15360 | ||
d83e736b JK |
15361 | /* Return DWARF block referenced by DW_AT_location of DIE at OFFSET at PER_CU. |
15362 | Returned value is intended for DW_OP_call*. Returned | |
15363 | dwarf2_locexpr_baton->data has lifetime of PER_CU->OBJFILE. */ | |
5c631832 JK |
15364 | |
15365 | struct dwarf2_locexpr_baton | |
b64f50a1 | 15366 | dwarf2_fetch_die_location_block (cu_offset offset_in_cu, |
8cf6f0b1 TT |
15367 | struct dwarf2_per_cu_data *per_cu, |
15368 | CORE_ADDR (*get_frame_pc) (void *baton), | |
15369 | void *baton) | |
5c631832 | 15370 | { |
b64f50a1 | 15371 | sect_offset offset = { per_cu->offset.sect_off + offset_in_cu.cu_off }; |
918dd910 | 15372 | struct dwarf2_cu *cu; |
5c631832 JK |
15373 | struct die_info *die; |
15374 | struct attribute *attr; | |
15375 | struct dwarf2_locexpr_baton retval; | |
15376 | ||
8cf6f0b1 TT |
15377 | dw2_setup (per_cu->objfile); |
15378 | ||
918dd910 JK |
15379 | if (per_cu->cu == NULL) |
15380 | load_cu (per_cu); | |
15381 | cu = per_cu->cu; | |
15382 | ||
5c631832 JK |
15383 | die = follow_die_offset (offset, &cu); |
15384 | if (!die) | |
15385 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced in module %s"), | |
b64f50a1 | 15386 | offset.sect_off, per_cu->objfile->name); |
5c631832 JK |
15387 | |
15388 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
15389 | if (!attr) | |
15390 | { | |
e103e986 JK |
15391 | /* DWARF: "If there is no such attribute, then there is no effect.". |
15392 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 15393 | |
e103e986 | 15394 | retval.data = NULL; |
5c631832 JK |
15395 | retval.size = 0; |
15396 | } | |
8cf6f0b1 TT |
15397 | else if (attr_form_is_section_offset (attr)) |
15398 | { | |
15399 | struct dwarf2_loclist_baton loclist_baton; | |
15400 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
15401 | size_t size; | |
15402 | ||
15403 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
15404 | ||
15405 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
15406 | &size, pc); | |
15407 | retval.size = size; | |
15408 | } | |
5c631832 JK |
15409 | else |
15410 | { | |
15411 | if (!attr_form_is_block (attr)) | |
15412 | error (_("Dwarf Error: DIE at 0x%x referenced in module %s " | |
15413 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), | |
b64f50a1 | 15414 | offset.sect_off, per_cu->objfile->name); |
5c631832 JK |
15415 | |
15416 | retval.data = DW_BLOCK (attr)->data; | |
15417 | retval.size = DW_BLOCK (attr)->size; | |
15418 | } | |
15419 | retval.per_cu = cu->per_cu; | |
918dd910 | 15420 | |
918dd910 JK |
15421 | age_cached_comp_units (); |
15422 | ||
5c631832 | 15423 | return retval; |
348e048f DE |
15424 | } |
15425 | ||
8a9b8146 TT |
15426 | /* Return the type of the DIE at DIE_OFFSET in the CU named by |
15427 | PER_CU. */ | |
15428 | ||
15429 | struct type * | |
b64f50a1 | 15430 | dwarf2_get_die_type (cu_offset die_offset, |
8a9b8146 TT |
15431 | struct dwarf2_per_cu_data *per_cu) |
15432 | { | |
b64f50a1 JK |
15433 | sect_offset die_offset_sect; |
15434 | ||
8a9b8146 | 15435 | dw2_setup (per_cu->objfile); |
b64f50a1 JK |
15436 | |
15437 | die_offset_sect.sect_off = per_cu->offset.sect_off + die_offset.cu_off; | |
15438 | return get_die_type_at_offset (die_offset_sect, per_cu); | |
8a9b8146 TT |
15439 | } |
15440 | ||
348e048f DE |
15441 | /* Follow the signature attribute ATTR in SRC_DIE. |
15442 | On entry *REF_CU is the CU of SRC_DIE. | |
15443 | On exit *REF_CU is the CU of the result. */ | |
15444 | ||
15445 | static struct die_info * | |
15446 | follow_die_sig (struct die_info *src_die, struct attribute *attr, | |
15447 | struct dwarf2_cu **ref_cu) | |
15448 | { | |
15449 | struct objfile *objfile = (*ref_cu)->objfile; | |
15450 | struct die_info temp_die; | |
15451 | struct signatured_type *sig_type = DW_SIGNATURED_TYPE (attr); | |
15452 | struct dwarf2_cu *sig_cu; | |
15453 | struct die_info *die; | |
15454 | ||
15455 | /* sig_type will be NULL if the signatured type is missing from | |
15456 | the debug info. */ | |
15457 | if (sig_type == NULL) | |
15458 | error (_("Dwarf Error: Cannot find signatured DIE referenced from DIE " | |
15459 | "at 0x%x [in module %s]"), | |
b64f50a1 | 15460 | src_die->offset.sect_off, objfile->name); |
348e048f DE |
15461 | |
15462 | /* If necessary, add it to the queue and load its DIEs. */ | |
15463 | ||
95554aad | 15464 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, language_minimal)) |
a0f42c21 | 15465 | read_signatured_type (sig_type); |
348e048f DE |
15466 | |
15467 | gdb_assert (sig_type->per_cu.cu != NULL); | |
15468 | ||
15469 | sig_cu = sig_type->per_cu.cu; | |
3019eac3 DE |
15470 | gdb_assert (sig_type->type_offset_in_section.sect_off != 0); |
15471 | temp_die.offset = sig_type->type_offset_in_section; | |
b64f50a1 JK |
15472 | die = htab_find_with_hash (sig_cu->die_hash, &temp_die, |
15473 | temp_die.offset.sect_off); | |
348e048f DE |
15474 | if (die) |
15475 | { | |
15476 | *ref_cu = sig_cu; | |
15477 | return die; | |
15478 | } | |
15479 | ||
3e43a32a MS |
15480 | error (_("Dwarf Error: Cannot find signatured DIE at 0x%x referenced " |
15481 | "from DIE at 0x%x [in module %s]"), | |
b64f50a1 | 15482 | temp_die.offset.sect_off, src_die->offset.sect_off, objfile->name); |
348e048f DE |
15483 | } |
15484 | ||
15485 | /* Given an offset of a signatured type, return its signatured_type. */ | |
15486 | ||
15487 | static struct signatured_type * | |
8b70b953 TT |
15488 | lookup_signatured_type_at_offset (struct objfile *objfile, |
15489 | struct dwarf2_section_info *section, | |
b64f50a1 | 15490 | sect_offset offset) |
348e048f | 15491 | { |
b64f50a1 | 15492 | gdb_byte *info_ptr = section->buffer + offset.sect_off; |
348e048f DE |
15493 | unsigned int length, initial_length_size; |
15494 | unsigned int sig_offset; | |
52dc124a | 15495 | struct signatured_type find_entry, *sig_type; |
348e048f DE |
15496 | |
15497 | length = read_initial_length (objfile->obfd, info_ptr, &initial_length_size); | |
15498 | sig_offset = (initial_length_size | |
15499 | + 2 /*version*/ | |
15500 | + (initial_length_size == 4 ? 4 : 8) /*debug_abbrev_offset*/ | |
15501 | + 1 /*address_size*/); | |
15502 | find_entry.signature = bfd_get_64 (objfile->obfd, info_ptr + sig_offset); | |
52dc124a | 15503 | sig_type = htab_find (dwarf2_per_objfile->signatured_types, &find_entry); |
348e048f DE |
15504 | |
15505 | /* This is only used to lookup previously recorded types. | |
15506 | If we didn't find it, it's our bug. */ | |
52dc124a DE |
15507 | gdb_assert (sig_type != NULL); |
15508 | gdb_assert (offset.sect_off == sig_type->per_cu.offset.sect_off); | |
348e048f | 15509 | |
52dc124a | 15510 | return sig_type; |
348e048f DE |
15511 | } |
15512 | ||
e5fe5e75 | 15513 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
15514 | |
15515 | static void | |
e5fe5e75 | 15516 | load_full_type_unit (struct dwarf2_per_cu_data *per_cu) |
348e048f | 15517 | { |
e5fe5e75 | 15518 | struct objfile *objfile = per_cu->objfile; |
3019eac3 | 15519 | struct dwarf2_section_info *sect = per_cu->info_or_types_section; |
b64f50a1 | 15520 | sect_offset offset = per_cu->offset; |
52dc124a | 15521 | struct signatured_type *sig_type; |
348e048f | 15522 | |
8b70b953 | 15523 | dwarf2_read_section (objfile, sect); |
be391dca | 15524 | |
348e048f | 15525 | /* We have the section offset, but we need the signature to do the |
e5fe5e75 DE |
15526 | hash table lookup. */ |
15527 | /* FIXME: This is sorta unnecessary, read_signatured_type only uses | |
15528 | the signature to assert we found the right one. | |
15529 | Ok, but it's a lot of work. We should simplify things so any needed | |
15530 | assert doesn't require all this clumsiness. */ | |
52dc124a | 15531 | sig_type = lookup_signatured_type_at_offset (objfile, sect, offset); |
348e048f | 15532 | |
dee91e82 | 15533 | gdb_assert (&sig_type->per_cu == per_cu); |
52dc124a | 15534 | gdb_assert (sig_type->per_cu.cu == NULL); |
348e048f | 15535 | |
52dc124a | 15536 | read_signatured_type (sig_type); |
348e048f | 15537 | |
52dc124a | 15538 | gdb_assert (sig_type->per_cu.cu != NULL); |
348e048f DE |
15539 | } |
15540 | ||
dee91e82 DE |
15541 | /* die_reader_func for read_signatured_type. |
15542 | This is identical to load_full_comp_unit_reader, | |
15543 | but is kept separate for now. */ | |
348e048f DE |
15544 | |
15545 | static void | |
dee91e82 DE |
15546 | read_signatured_type_reader (const struct die_reader_specs *reader, |
15547 | gdb_byte *info_ptr, | |
15548 | struct die_info *comp_unit_die, | |
15549 | int has_children, | |
15550 | void *data) | |
348e048f | 15551 | { |
dee91e82 | 15552 | struct dwarf2_cu *cu = reader->cu; |
348e048f | 15553 | |
dee91e82 DE |
15554 | gdb_assert (cu->die_hash == NULL); |
15555 | cu->die_hash = | |
15556 | htab_create_alloc_ex (cu->header.length / 12, | |
15557 | die_hash, | |
15558 | die_eq, | |
15559 | NULL, | |
15560 | &cu->comp_unit_obstack, | |
15561 | hashtab_obstack_allocate, | |
15562 | dummy_obstack_deallocate); | |
348e048f | 15563 | |
dee91e82 DE |
15564 | if (has_children) |
15565 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
15566 | &info_ptr, comp_unit_die); | |
15567 | cu->dies = comp_unit_die; | |
15568 | /* comp_unit_die is not stored in die_hash, no need. */ | |
348e048f DE |
15569 | |
15570 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 15571 | all CUs needed for references have been loaded yet, and symbol |
348e048f | 15572 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
15573 | or we won't be able to build types correctly. |
15574 | Similarly, if we do not read the producer, we can not apply | |
15575 | producer-specific interpretation. */ | |
95554aad | 15576 | prepare_one_comp_unit (cu, cu->dies, language_minimal); |
dee91e82 | 15577 | } |
348e048f | 15578 | |
3019eac3 DE |
15579 | /* Read in a signatured type and build its CU and DIEs. |
15580 | If the type is a stub for the real type in a DWO file, | |
15581 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
15582 | |
15583 | static void | |
15584 | read_signatured_type (struct signatured_type *sig_type) | |
15585 | { | |
15586 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 15587 | |
3019eac3 | 15588 | gdb_assert (per_cu->is_debug_types); |
dee91e82 | 15589 | gdb_assert (per_cu->cu == NULL); |
348e048f | 15590 | |
fd820528 | 15591 | init_cutu_and_read_dies (per_cu, 0, 1, read_signatured_type_reader, NULL); |
c906108c SS |
15592 | } |
15593 | ||
c906108c SS |
15594 | /* Decode simple location descriptions. |
15595 | Given a pointer to a dwarf block that defines a location, compute | |
15596 | the location and return the value. | |
15597 | ||
4cecd739 DJ |
15598 | NOTE drow/2003-11-18: This function is called in two situations |
15599 | now: for the address of static or global variables (partial symbols | |
15600 | only) and for offsets into structures which are expected to be | |
15601 | (more or less) constant. The partial symbol case should go away, | |
15602 | and only the constant case should remain. That will let this | |
15603 | function complain more accurately. A few special modes are allowed | |
15604 | without complaint for global variables (for instance, global | |
15605 | register values and thread-local values). | |
c906108c SS |
15606 | |
15607 | A location description containing no operations indicates that the | |
4cecd739 | 15608 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
15609 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
15610 | callers will only want a very basic result and this can become a | |
21ae7a4d JK |
15611 | complaint. |
15612 | ||
15613 | Note that stack[0] is unused except as a default error return. */ | |
c906108c SS |
15614 | |
15615 | static CORE_ADDR | |
e7c27a73 | 15616 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 15617 | { |
e7c27a73 | 15618 | struct objfile *objfile = cu->objfile; |
21ae7a4d JK |
15619 | int i; |
15620 | int size = blk->size; | |
15621 | gdb_byte *data = blk->data; | |
15622 | CORE_ADDR stack[64]; | |
15623 | int stacki; | |
15624 | unsigned int bytes_read, unsnd; | |
15625 | gdb_byte op; | |
c906108c | 15626 | |
21ae7a4d JK |
15627 | i = 0; |
15628 | stacki = 0; | |
15629 | stack[stacki] = 0; | |
15630 | stack[++stacki] = 0; | |
15631 | ||
15632 | while (i < size) | |
15633 | { | |
15634 | op = data[i++]; | |
15635 | switch (op) | |
15636 | { | |
15637 | case DW_OP_lit0: | |
15638 | case DW_OP_lit1: | |
15639 | case DW_OP_lit2: | |
15640 | case DW_OP_lit3: | |
15641 | case DW_OP_lit4: | |
15642 | case DW_OP_lit5: | |
15643 | case DW_OP_lit6: | |
15644 | case DW_OP_lit7: | |
15645 | case DW_OP_lit8: | |
15646 | case DW_OP_lit9: | |
15647 | case DW_OP_lit10: | |
15648 | case DW_OP_lit11: | |
15649 | case DW_OP_lit12: | |
15650 | case DW_OP_lit13: | |
15651 | case DW_OP_lit14: | |
15652 | case DW_OP_lit15: | |
15653 | case DW_OP_lit16: | |
15654 | case DW_OP_lit17: | |
15655 | case DW_OP_lit18: | |
15656 | case DW_OP_lit19: | |
15657 | case DW_OP_lit20: | |
15658 | case DW_OP_lit21: | |
15659 | case DW_OP_lit22: | |
15660 | case DW_OP_lit23: | |
15661 | case DW_OP_lit24: | |
15662 | case DW_OP_lit25: | |
15663 | case DW_OP_lit26: | |
15664 | case DW_OP_lit27: | |
15665 | case DW_OP_lit28: | |
15666 | case DW_OP_lit29: | |
15667 | case DW_OP_lit30: | |
15668 | case DW_OP_lit31: | |
15669 | stack[++stacki] = op - DW_OP_lit0; | |
15670 | break; | |
f1bea926 | 15671 | |
21ae7a4d JK |
15672 | case DW_OP_reg0: |
15673 | case DW_OP_reg1: | |
15674 | case DW_OP_reg2: | |
15675 | case DW_OP_reg3: | |
15676 | case DW_OP_reg4: | |
15677 | case DW_OP_reg5: | |
15678 | case DW_OP_reg6: | |
15679 | case DW_OP_reg7: | |
15680 | case DW_OP_reg8: | |
15681 | case DW_OP_reg9: | |
15682 | case DW_OP_reg10: | |
15683 | case DW_OP_reg11: | |
15684 | case DW_OP_reg12: | |
15685 | case DW_OP_reg13: | |
15686 | case DW_OP_reg14: | |
15687 | case DW_OP_reg15: | |
15688 | case DW_OP_reg16: | |
15689 | case DW_OP_reg17: | |
15690 | case DW_OP_reg18: | |
15691 | case DW_OP_reg19: | |
15692 | case DW_OP_reg20: | |
15693 | case DW_OP_reg21: | |
15694 | case DW_OP_reg22: | |
15695 | case DW_OP_reg23: | |
15696 | case DW_OP_reg24: | |
15697 | case DW_OP_reg25: | |
15698 | case DW_OP_reg26: | |
15699 | case DW_OP_reg27: | |
15700 | case DW_OP_reg28: | |
15701 | case DW_OP_reg29: | |
15702 | case DW_OP_reg30: | |
15703 | case DW_OP_reg31: | |
15704 | stack[++stacki] = op - DW_OP_reg0; | |
15705 | if (i < size) | |
15706 | dwarf2_complex_location_expr_complaint (); | |
15707 | break; | |
c906108c | 15708 | |
21ae7a4d JK |
15709 | case DW_OP_regx: |
15710 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
15711 | i += bytes_read; | |
15712 | stack[++stacki] = unsnd; | |
15713 | if (i < size) | |
15714 | dwarf2_complex_location_expr_complaint (); | |
15715 | break; | |
c906108c | 15716 | |
21ae7a4d JK |
15717 | case DW_OP_addr: |
15718 | stack[++stacki] = read_address (objfile->obfd, &data[i], | |
15719 | cu, &bytes_read); | |
15720 | i += bytes_read; | |
15721 | break; | |
d53d4ac5 | 15722 | |
21ae7a4d JK |
15723 | case DW_OP_const1u: |
15724 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
15725 | i += 1; | |
15726 | break; | |
15727 | ||
15728 | case DW_OP_const1s: | |
15729 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
15730 | i += 1; | |
15731 | break; | |
15732 | ||
15733 | case DW_OP_const2u: | |
15734 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
15735 | i += 2; | |
15736 | break; | |
15737 | ||
15738 | case DW_OP_const2s: | |
15739 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
15740 | i += 2; | |
15741 | break; | |
d53d4ac5 | 15742 | |
21ae7a4d JK |
15743 | case DW_OP_const4u: |
15744 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
15745 | i += 4; | |
15746 | break; | |
15747 | ||
15748 | case DW_OP_const4s: | |
15749 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
15750 | i += 4; | |
15751 | break; | |
15752 | ||
585861ea JK |
15753 | case DW_OP_const8u: |
15754 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
15755 | i += 8; | |
15756 | break; | |
15757 | ||
21ae7a4d JK |
15758 | case DW_OP_constu: |
15759 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
15760 | &bytes_read); | |
15761 | i += bytes_read; | |
15762 | break; | |
15763 | ||
15764 | case DW_OP_consts: | |
15765 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
15766 | i += bytes_read; | |
15767 | break; | |
15768 | ||
15769 | case DW_OP_dup: | |
15770 | stack[stacki + 1] = stack[stacki]; | |
15771 | stacki++; | |
15772 | break; | |
15773 | ||
15774 | case DW_OP_plus: | |
15775 | stack[stacki - 1] += stack[stacki]; | |
15776 | stacki--; | |
15777 | break; | |
15778 | ||
15779 | case DW_OP_plus_uconst: | |
15780 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
15781 | &bytes_read); | |
15782 | i += bytes_read; | |
15783 | break; | |
15784 | ||
15785 | case DW_OP_minus: | |
15786 | stack[stacki - 1] -= stack[stacki]; | |
15787 | stacki--; | |
15788 | break; | |
15789 | ||
15790 | case DW_OP_deref: | |
15791 | /* If we're not the last op, then we definitely can't encode | |
15792 | this using GDB's address_class enum. This is valid for partial | |
15793 | global symbols, although the variable's address will be bogus | |
15794 | in the psymtab. */ | |
15795 | if (i < size) | |
15796 | dwarf2_complex_location_expr_complaint (); | |
15797 | break; | |
15798 | ||
15799 | case DW_OP_GNU_push_tls_address: | |
15800 | /* The top of the stack has the offset from the beginning | |
15801 | of the thread control block at which the variable is located. */ | |
15802 | /* Nothing should follow this operator, so the top of stack would | |
15803 | be returned. */ | |
15804 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
15805 | address will be bogus in the psymtab. Make it always at least |
15806 | non-zero to not look as a variable garbage collected by linker | |
15807 | which have DW_OP_addr 0. */ | |
21ae7a4d JK |
15808 | if (i < size) |
15809 | dwarf2_complex_location_expr_complaint (); | |
585861ea | 15810 | stack[stacki]++; |
21ae7a4d JK |
15811 | break; |
15812 | ||
15813 | case DW_OP_GNU_uninit: | |
15814 | break; | |
15815 | ||
3019eac3 | 15816 | case DW_OP_GNU_addr_index: |
49f6c839 | 15817 | case DW_OP_GNU_const_index: |
3019eac3 DE |
15818 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
15819 | &bytes_read); | |
15820 | i += bytes_read; | |
15821 | break; | |
15822 | ||
21ae7a4d JK |
15823 | default: |
15824 | { | |
f39c6ffd | 15825 | const char *name = get_DW_OP_name (op); |
21ae7a4d JK |
15826 | |
15827 | if (name) | |
15828 | complaint (&symfile_complaints, _("unsupported stack op: '%s'"), | |
15829 | name); | |
15830 | else | |
15831 | complaint (&symfile_complaints, _("unsupported stack op: '%02x'"), | |
15832 | op); | |
15833 | } | |
15834 | ||
15835 | return (stack[stacki]); | |
d53d4ac5 | 15836 | } |
3c6e0cb3 | 15837 | |
21ae7a4d JK |
15838 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
15839 | outside of the allocated space. Also enforce minimum>0. */ | |
15840 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
15841 | { | |
15842 | complaint (&symfile_complaints, | |
15843 | _("location description stack overflow")); | |
15844 | return 0; | |
15845 | } | |
15846 | ||
15847 | if (stacki <= 0) | |
15848 | { | |
15849 | complaint (&symfile_complaints, | |
15850 | _("location description stack underflow")); | |
15851 | return 0; | |
15852 | } | |
15853 | } | |
15854 | return (stack[stacki]); | |
c906108c SS |
15855 | } |
15856 | ||
15857 | /* memory allocation interface */ | |
15858 | ||
c906108c | 15859 | static struct dwarf_block * |
7b5a2f43 | 15860 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c SS |
15861 | { |
15862 | struct dwarf_block *blk; | |
15863 | ||
15864 | blk = (struct dwarf_block *) | |
7b5a2f43 | 15865 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct dwarf_block)); |
c906108c SS |
15866 | return (blk); |
15867 | } | |
15868 | ||
c906108c | 15869 | static struct die_info * |
b60c80d6 | 15870 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
15871 | { |
15872 | struct die_info *die; | |
b60c80d6 DJ |
15873 | size_t size = sizeof (struct die_info); |
15874 | ||
15875 | if (num_attrs > 1) | |
15876 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 15877 | |
b60c80d6 | 15878 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
15879 | memset (die, 0, sizeof (struct die_info)); |
15880 | return (die); | |
15881 | } | |
2e276125 JB |
15882 | |
15883 | \f | |
15884 | /* Macro support. */ | |
15885 | ||
2e276125 JB |
15886 | /* Return the full name of file number I in *LH's file name table. |
15887 | Use COMP_DIR as the name of the current directory of the | |
15888 | compilation. The result is allocated using xmalloc; the caller is | |
15889 | responsible for freeing it. */ | |
15890 | static char * | |
15891 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
15892 | { | |
6a83a1e6 EZ |
15893 | /* Is the file number a valid index into the line header's file name |
15894 | table? Remember that file numbers start with one, not zero. */ | |
15895 | if (1 <= file && file <= lh->num_file_names) | |
15896 | { | |
15897 | struct file_entry *fe = &lh->file_names[file - 1]; | |
6e70227d | 15898 | |
6a83a1e6 EZ |
15899 | if (IS_ABSOLUTE_PATH (fe->name)) |
15900 | return xstrdup (fe->name); | |
15901 | else | |
15902 | { | |
15903 | const char *dir; | |
15904 | int dir_len; | |
15905 | char *full_name; | |
15906 | ||
15907 | if (fe->dir_index) | |
15908 | dir = lh->include_dirs[fe->dir_index - 1]; | |
15909 | else | |
15910 | dir = comp_dir; | |
15911 | ||
15912 | if (dir) | |
15913 | { | |
15914 | dir_len = strlen (dir); | |
15915 | full_name = xmalloc (dir_len + 1 + strlen (fe->name) + 1); | |
15916 | strcpy (full_name, dir); | |
15917 | full_name[dir_len] = '/'; | |
15918 | strcpy (full_name + dir_len + 1, fe->name); | |
15919 | return full_name; | |
15920 | } | |
15921 | else | |
15922 | return xstrdup (fe->name); | |
15923 | } | |
15924 | } | |
2e276125 JB |
15925 | else |
15926 | { | |
6a83a1e6 EZ |
15927 | /* The compiler produced a bogus file number. We can at least |
15928 | record the macro definitions made in the file, even if we | |
15929 | won't be able to find the file by name. */ | |
15930 | char fake_name[80]; | |
9a619af0 | 15931 | |
6a83a1e6 | 15932 | sprintf (fake_name, "<bad macro file number %d>", file); |
2e276125 | 15933 | |
6e70227d | 15934 | complaint (&symfile_complaints, |
6a83a1e6 EZ |
15935 | _("bad file number in macro information (%d)"), |
15936 | file); | |
2e276125 | 15937 | |
6a83a1e6 | 15938 | return xstrdup (fake_name); |
2e276125 JB |
15939 | } |
15940 | } | |
15941 | ||
15942 | ||
15943 | static struct macro_source_file * | |
15944 | macro_start_file (int file, int line, | |
15945 | struct macro_source_file *current_file, | |
15946 | const char *comp_dir, | |
15947 | struct line_header *lh, struct objfile *objfile) | |
15948 | { | |
15949 | /* The full name of this source file. */ | |
15950 | char *full_name = file_full_name (file, lh, comp_dir); | |
15951 | ||
15952 | /* We don't create a macro table for this compilation unit | |
15953 | at all until we actually get a filename. */ | |
15954 | if (! pending_macros) | |
4a146b47 | 15955 | pending_macros = new_macro_table (&objfile->objfile_obstack, |
af5f3db6 | 15956 | objfile->macro_cache); |
2e276125 JB |
15957 | |
15958 | if (! current_file) | |
abc9d0dc TT |
15959 | { |
15960 | /* If we have no current file, then this must be the start_file | |
15961 | directive for the compilation unit's main source file. */ | |
15962 | current_file = macro_set_main (pending_macros, full_name); | |
15963 | macro_define_special (pending_macros); | |
15964 | } | |
2e276125 JB |
15965 | else |
15966 | current_file = macro_include (current_file, line, full_name); | |
15967 | ||
15968 | xfree (full_name); | |
6e70227d | 15969 | |
2e276125 JB |
15970 | return current_file; |
15971 | } | |
15972 | ||
15973 | ||
15974 | /* Copy the LEN characters at BUF to a xmalloc'ed block of memory, | |
15975 | followed by a null byte. */ | |
15976 | static char * | |
15977 | copy_string (const char *buf, int len) | |
15978 | { | |
15979 | char *s = xmalloc (len + 1); | |
9a619af0 | 15980 | |
2e276125 JB |
15981 | memcpy (s, buf, len); |
15982 | s[len] = '\0'; | |
2e276125 JB |
15983 | return s; |
15984 | } | |
15985 | ||
15986 | ||
15987 | static const char * | |
15988 | consume_improper_spaces (const char *p, const char *body) | |
15989 | { | |
15990 | if (*p == ' ') | |
15991 | { | |
4d3c2250 | 15992 | complaint (&symfile_complaints, |
3e43a32a MS |
15993 | _("macro definition contains spaces " |
15994 | "in formal argument list:\n`%s'"), | |
4d3c2250 | 15995 | body); |
2e276125 JB |
15996 | |
15997 | while (*p == ' ') | |
15998 | p++; | |
15999 | } | |
16000 | ||
16001 | return p; | |
16002 | } | |
16003 | ||
16004 | ||
16005 | static void | |
16006 | parse_macro_definition (struct macro_source_file *file, int line, | |
16007 | const char *body) | |
16008 | { | |
16009 | const char *p; | |
16010 | ||
16011 | /* The body string takes one of two forms. For object-like macro | |
16012 | definitions, it should be: | |
16013 | ||
16014 | <macro name> " " <definition> | |
16015 | ||
16016 | For function-like macro definitions, it should be: | |
16017 | ||
16018 | <macro name> "() " <definition> | |
16019 | or | |
16020 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
16021 | ||
16022 | Spaces may appear only where explicitly indicated, and in the | |
16023 | <definition>. | |
16024 | ||
16025 | The Dwarf 2 spec says that an object-like macro's name is always | |
16026 | followed by a space, but versions of GCC around March 2002 omit | |
6e70227d | 16027 | the space when the macro's definition is the empty string. |
2e276125 JB |
16028 | |
16029 | The Dwarf 2 spec says that there should be no spaces between the | |
16030 | formal arguments in a function-like macro's formal argument list, | |
16031 | but versions of GCC around March 2002 include spaces after the | |
16032 | commas. */ | |
16033 | ||
16034 | ||
16035 | /* Find the extent of the macro name. The macro name is terminated | |
16036 | by either a space or null character (for an object-like macro) or | |
16037 | an opening paren (for a function-like macro). */ | |
16038 | for (p = body; *p; p++) | |
16039 | if (*p == ' ' || *p == '(') | |
16040 | break; | |
16041 | ||
16042 | if (*p == ' ' || *p == '\0') | |
16043 | { | |
16044 | /* It's an object-like macro. */ | |
16045 | int name_len = p - body; | |
16046 | char *name = copy_string (body, name_len); | |
16047 | const char *replacement; | |
16048 | ||
16049 | if (*p == ' ') | |
16050 | replacement = body + name_len + 1; | |
16051 | else | |
16052 | { | |
4d3c2250 | 16053 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
16054 | replacement = body + name_len; |
16055 | } | |
6e70227d | 16056 | |
2e276125 JB |
16057 | macro_define_object (file, line, name, replacement); |
16058 | ||
16059 | xfree (name); | |
16060 | } | |
16061 | else if (*p == '(') | |
16062 | { | |
16063 | /* It's a function-like macro. */ | |
16064 | char *name = copy_string (body, p - body); | |
16065 | int argc = 0; | |
16066 | int argv_size = 1; | |
16067 | char **argv = xmalloc (argv_size * sizeof (*argv)); | |
16068 | ||
16069 | p++; | |
16070 | ||
16071 | p = consume_improper_spaces (p, body); | |
16072 | ||
16073 | /* Parse the formal argument list. */ | |
16074 | while (*p && *p != ')') | |
16075 | { | |
16076 | /* Find the extent of the current argument name. */ | |
16077 | const char *arg_start = p; | |
16078 | ||
16079 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
16080 | p++; | |
16081 | ||
16082 | if (! *p || p == arg_start) | |
4d3c2250 | 16083 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
16084 | else |
16085 | { | |
16086 | /* Make sure argv has room for the new argument. */ | |
16087 | if (argc >= argv_size) | |
16088 | { | |
16089 | argv_size *= 2; | |
16090 | argv = xrealloc (argv, argv_size * sizeof (*argv)); | |
16091 | } | |
16092 | ||
16093 | argv[argc++] = copy_string (arg_start, p - arg_start); | |
16094 | } | |
16095 | ||
16096 | p = consume_improper_spaces (p, body); | |
16097 | ||
16098 | /* Consume the comma, if present. */ | |
16099 | if (*p == ',') | |
16100 | { | |
16101 | p++; | |
16102 | ||
16103 | p = consume_improper_spaces (p, body); | |
16104 | } | |
16105 | } | |
16106 | ||
16107 | if (*p == ')') | |
16108 | { | |
16109 | p++; | |
16110 | ||
16111 | if (*p == ' ') | |
16112 | /* Perfectly formed definition, no complaints. */ | |
16113 | macro_define_function (file, line, name, | |
6e70227d | 16114 | argc, (const char **) argv, |
2e276125 JB |
16115 | p + 1); |
16116 | else if (*p == '\0') | |
16117 | { | |
16118 | /* Complain, but do define it. */ | |
4d3c2250 | 16119 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 | 16120 | macro_define_function (file, line, name, |
6e70227d | 16121 | argc, (const char **) argv, |
2e276125 JB |
16122 | p); |
16123 | } | |
16124 | else | |
16125 | /* Just complain. */ | |
4d3c2250 | 16126 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
16127 | } |
16128 | else | |
16129 | /* Just complain. */ | |
4d3c2250 | 16130 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
16131 | |
16132 | xfree (name); | |
16133 | { | |
16134 | int i; | |
16135 | ||
16136 | for (i = 0; i < argc; i++) | |
16137 | xfree (argv[i]); | |
16138 | } | |
16139 | xfree (argv); | |
16140 | } | |
16141 | else | |
4d3c2250 | 16142 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
16143 | } |
16144 | ||
cf2c3c16 TT |
16145 | /* Skip some bytes from BYTES according to the form given in FORM. |
16146 | Returns the new pointer. */ | |
2e276125 | 16147 | |
cf2c3c16 | 16148 | static gdb_byte * |
f664829e | 16149 | skip_form_bytes (bfd *abfd, gdb_byte *bytes, gdb_byte *buffer_end, |
cf2c3c16 TT |
16150 | enum dwarf_form form, |
16151 | unsigned int offset_size, | |
16152 | struct dwarf2_section_info *section) | |
2e276125 | 16153 | { |
cf2c3c16 | 16154 | unsigned int bytes_read; |
2e276125 | 16155 | |
cf2c3c16 | 16156 | switch (form) |
2e276125 | 16157 | { |
cf2c3c16 TT |
16158 | case DW_FORM_data1: |
16159 | case DW_FORM_flag: | |
16160 | ++bytes; | |
16161 | break; | |
16162 | ||
16163 | case DW_FORM_data2: | |
16164 | bytes += 2; | |
16165 | break; | |
16166 | ||
16167 | case DW_FORM_data4: | |
16168 | bytes += 4; | |
16169 | break; | |
16170 | ||
16171 | case DW_FORM_data8: | |
16172 | bytes += 8; | |
16173 | break; | |
16174 | ||
16175 | case DW_FORM_string: | |
16176 | read_direct_string (abfd, bytes, &bytes_read); | |
16177 | bytes += bytes_read; | |
16178 | break; | |
16179 | ||
16180 | case DW_FORM_sec_offset: | |
16181 | case DW_FORM_strp: | |
16182 | bytes += offset_size; | |
16183 | break; | |
16184 | ||
16185 | case DW_FORM_block: | |
16186 | bytes += read_unsigned_leb128 (abfd, bytes, &bytes_read); | |
16187 | bytes += bytes_read; | |
16188 | break; | |
16189 | ||
16190 | case DW_FORM_block1: | |
16191 | bytes += 1 + read_1_byte (abfd, bytes); | |
16192 | break; | |
16193 | case DW_FORM_block2: | |
16194 | bytes += 2 + read_2_bytes (abfd, bytes); | |
16195 | break; | |
16196 | case DW_FORM_block4: | |
16197 | bytes += 4 + read_4_bytes (abfd, bytes); | |
16198 | break; | |
16199 | ||
16200 | case DW_FORM_sdata: | |
16201 | case DW_FORM_udata: | |
3019eac3 DE |
16202 | case DW_FORM_GNU_addr_index: |
16203 | case DW_FORM_GNU_str_index: | |
f664829e DE |
16204 | bytes = (gdb_byte *) gdb_skip_leb128 (bytes, buffer_end); |
16205 | if (bytes == NULL) | |
16206 | { | |
16207 | dwarf2_section_buffer_overflow_complaint (section); | |
16208 | return NULL; | |
16209 | } | |
cf2c3c16 TT |
16210 | break; |
16211 | ||
16212 | default: | |
16213 | { | |
16214 | complain: | |
16215 | complaint (&symfile_complaints, | |
16216 | _("invalid form 0x%x in `%s'"), | |
16217 | form, | |
16218 | section->asection->name); | |
16219 | return NULL; | |
16220 | } | |
2e276125 JB |
16221 | } |
16222 | ||
cf2c3c16 TT |
16223 | return bytes; |
16224 | } | |
757a13d0 | 16225 | |
cf2c3c16 TT |
16226 | /* A helper for dwarf_decode_macros that handles skipping an unknown |
16227 | opcode. Returns an updated pointer to the macro data buffer; or, | |
16228 | on error, issues a complaint and returns NULL. */ | |
757a13d0 | 16229 | |
cf2c3c16 TT |
16230 | static gdb_byte * |
16231 | skip_unknown_opcode (unsigned int opcode, | |
16232 | gdb_byte **opcode_definitions, | |
f664829e | 16233 | gdb_byte *mac_ptr, gdb_byte *mac_end, |
cf2c3c16 TT |
16234 | bfd *abfd, |
16235 | unsigned int offset_size, | |
16236 | struct dwarf2_section_info *section) | |
16237 | { | |
16238 | unsigned int bytes_read, i; | |
16239 | unsigned long arg; | |
16240 | gdb_byte *defn; | |
2e276125 | 16241 | |
cf2c3c16 | 16242 | if (opcode_definitions[opcode] == NULL) |
2e276125 | 16243 | { |
cf2c3c16 TT |
16244 | complaint (&symfile_complaints, |
16245 | _("unrecognized DW_MACFINO opcode 0x%x"), | |
16246 | opcode); | |
16247 | return NULL; | |
16248 | } | |
2e276125 | 16249 | |
cf2c3c16 TT |
16250 | defn = opcode_definitions[opcode]; |
16251 | arg = read_unsigned_leb128 (abfd, defn, &bytes_read); | |
16252 | defn += bytes_read; | |
2e276125 | 16253 | |
cf2c3c16 TT |
16254 | for (i = 0; i < arg; ++i) |
16255 | { | |
f664829e DE |
16256 | mac_ptr = skip_form_bytes (abfd, mac_ptr, mac_end, defn[i], offset_size, |
16257 | section); | |
cf2c3c16 TT |
16258 | if (mac_ptr == NULL) |
16259 | { | |
16260 | /* skip_form_bytes already issued the complaint. */ | |
16261 | return NULL; | |
16262 | } | |
16263 | } | |
757a13d0 | 16264 | |
cf2c3c16 TT |
16265 | return mac_ptr; |
16266 | } | |
757a13d0 | 16267 | |
cf2c3c16 TT |
16268 | /* A helper function which parses the header of a macro section. |
16269 | If the macro section is the extended (for now called "GNU") type, | |
16270 | then this updates *OFFSET_SIZE. Returns a pointer to just after | |
16271 | the header, or issues a complaint and returns NULL on error. */ | |
757a13d0 | 16272 | |
cf2c3c16 TT |
16273 | static gdb_byte * |
16274 | dwarf_parse_macro_header (gdb_byte **opcode_definitions, | |
16275 | bfd *abfd, | |
16276 | gdb_byte *mac_ptr, | |
16277 | unsigned int *offset_size, | |
16278 | int section_is_gnu) | |
16279 | { | |
16280 | memset (opcode_definitions, 0, 256 * sizeof (gdb_byte *)); | |
757a13d0 | 16281 | |
cf2c3c16 TT |
16282 | if (section_is_gnu) |
16283 | { | |
16284 | unsigned int version, flags; | |
757a13d0 | 16285 | |
cf2c3c16 TT |
16286 | version = read_2_bytes (abfd, mac_ptr); |
16287 | if (version != 4) | |
16288 | { | |
16289 | complaint (&symfile_complaints, | |
16290 | _("unrecognized version `%d' in .debug_macro section"), | |
16291 | version); | |
16292 | return NULL; | |
16293 | } | |
16294 | mac_ptr += 2; | |
757a13d0 | 16295 | |
cf2c3c16 TT |
16296 | flags = read_1_byte (abfd, mac_ptr); |
16297 | ++mac_ptr; | |
16298 | *offset_size = (flags & 1) ? 8 : 4; | |
757a13d0 | 16299 | |
cf2c3c16 TT |
16300 | if ((flags & 2) != 0) |
16301 | /* We don't need the line table offset. */ | |
16302 | mac_ptr += *offset_size; | |
757a13d0 | 16303 | |
cf2c3c16 TT |
16304 | /* Vendor opcode descriptions. */ |
16305 | if ((flags & 4) != 0) | |
16306 | { | |
16307 | unsigned int i, count; | |
757a13d0 | 16308 | |
cf2c3c16 TT |
16309 | count = read_1_byte (abfd, mac_ptr); |
16310 | ++mac_ptr; | |
16311 | for (i = 0; i < count; ++i) | |
16312 | { | |
16313 | unsigned int opcode, bytes_read; | |
16314 | unsigned long arg; | |
16315 | ||
16316 | opcode = read_1_byte (abfd, mac_ptr); | |
16317 | ++mac_ptr; | |
16318 | opcode_definitions[opcode] = mac_ptr; | |
16319 | arg = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
16320 | mac_ptr += bytes_read; | |
16321 | mac_ptr += arg; | |
16322 | } | |
757a13d0 | 16323 | } |
cf2c3c16 | 16324 | } |
757a13d0 | 16325 | |
cf2c3c16 TT |
16326 | return mac_ptr; |
16327 | } | |
757a13d0 | 16328 | |
cf2c3c16 | 16329 | /* A helper for dwarf_decode_macros that handles the GNU extensions, |
8fc3fc34 | 16330 | including DW_MACRO_GNU_transparent_include. */ |
cf2c3c16 TT |
16331 | |
16332 | static void | |
16333 | dwarf_decode_macro_bytes (bfd *abfd, gdb_byte *mac_ptr, gdb_byte *mac_end, | |
16334 | struct macro_source_file *current_file, | |
16335 | struct line_header *lh, char *comp_dir, | |
16336 | struct dwarf2_section_info *section, | |
16337 | int section_is_gnu, | |
16338 | unsigned int offset_size, | |
8fc3fc34 TT |
16339 | struct objfile *objfile, |
16340 | htab_t include_hash) | |
cf2c3c16 TT |
16341 | { |
16342 | enum dwarf_macro_record_type macinfo_type; | |
16343 | int at_commandline; | |
16344 | gdb_byte *opcode_definitions[256]; | |
757a13d0 | 16345 | |
cf2c3c16 TT |
16346 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, |
16347 | &offset_size, section_is_gnu); | |
16348 | if (mac_ptr == NULL) | |
16349 | { | |
16350 | /* We already issued a complaint. */ | |
16351 | return; | |
16352 | } | |
757a13d0 JK |
16353 | |
16354 | /* Determines if GDB is still before first DW_MACINFO_start_file. If true | |
16355 | GDB is still reading the definitions from command line. First | |
16356 | DW_MACINFO_start_file will need to be ignored as it was already executed | |
16357 | to create CURRENT_FILE for the main source holding also the command line | |
16358 | definitions. On first met DW_MACINFO_start_file this flag is reset to | |
16359 | normally execute all the remaining DW_MACINFO_start_file macinfos. */ | |
16360 | ||
16361 | at_commandline = 1; | |
16362 | ||
16363 | do | |
16364 | { | |
16365 | /* Do we at least have room for a macinfo type byte? */ | |
16366 | if (mac_ptr >= mac_end) | |
16367 | { | |
f664829e | 16368 | dwarf2_section_buffer_overflow_complaint (section); |
757a13d0 JK |
16369 | break; |
16370 | } | |
16371 | ||
16372 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
16373 | mac_ptr++; | |
16374 | ||
cf2c3c16 TT |
16375 | /* Note that we rely on the fact that the corresponding GNU and |
16376 | DWARF constants are the same. */ | |
757a13d0 JK |
16377 | switch (macinfo_type) |
16378 | { | |
16379 | /* A zero macinfo type indicates the end of the macro | |
16380 | information. */ | |
16381 | case 0: | |
16382 | break; | |
2e276125 | 16383 | |
cf2c3c16 TT |
16384 | case DW_MACRO_GNU_define: |
16385 | case DW_MACRO_GNU_undef: | |
16386 | case DW_MACRO_GNU_define_indirect: | |
16387 | case DW_MACRO_GNU_undef_indirect: | |
2e276125 | 16388 | { |
891d2f0b | 16389 | unsigned int bytes_read; |
2e276125 JB |
16390 | int line; |
16391 | char *body; | |
cf2c3c16 | 16392 | int is_define; |
2e276125 | 16393 | |
cf2c3c16 TT |
16394 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
16395 | mac_ptr += bytes_read; | |
16396 | ||
16397 | if (macinfo_type == DW_MACRO_GNU_define | |
16398 | || macinfo_type == DW_MACRO_GNU_undef) | |
16399 | { | |
16400 | body = read_direct_string (abfd, mac_ptr, &bytes_read); | |
16401 | mac_ptr += bytes_read; | |
16402 | } | |
16403 | else | |
16404 | { | |
16405 | LONGEST str_offset; | |
16406 | ||
16407 | str_offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
16408 | mac_ptr += offset_size; | |
2e276125 | 16409 | |
cf2c3c16 TT |
16410 | body = read_indirect_string_at_offset (abfd, str_offset); |
16411 | } | |
16412 | ||
16413 | is_define = (macinfo_type == DW_MACRO_GNU_define | |
16414 | || macinfo_type == DW_MACRO_GNU_define_indirect); | |
2e276125 | 16415 | if (! current_file) |
757a13d0 JK |
16416 | { |
16417 | /* DWARF violation as no main source is present. */ | |
16418 | complaint (&symfile_complaints, | |
16419 | _("debug info with no main source gives macro %s " | |
16420 | "on line %d: %s"), | |
cf2c3c16 TT |
16421 | is_define ? _("definition") : _("undefinition"), |
16422 | line, body); | |
757a13d0 JK |
16423 | break; |
16424 | } | |
3e43a32a MS |
16425 | if ((line == 0 && !at_commandline) |
16426 | || (line != 0 && at_commandline)) | |
4d3c2250 | 16427 | complaint (&symfile_complaints, |
757a13d0 JK |
16428 | _("debug info gives %s macro %s with %s line %d: %s"), |
16429 | at_commandline ? _("command-line") : _("in-file"), | |
cf2c3c16 | 16430 | is_define ? _("definition") : _("undefinition"), |
757a13d0 JK |
16431 | line == 0 ? _("zero") : _("non-zero"), line, body); |
16432 | ||
cf2c3c16 | 16433 | if (is_define) |
757a13d0 | 16434 | parse_macro_definition (current_file, line, body); |
cf2c3c16 TT |
16435 | else |
16436 | { | |
16437 | gdb_assert (macinfo_type == DW_MACRO_GNU_undef | |
16438 | || macinfo_type == DW_MACRO_GNU_undef_indirect); | |
16439 | macro_undef (current_file, line, body); | |
16440 | } | |
2e276125 JB |
16441 | } |
16442 | break; | |
16443 | ||
cf2c3c16 | 16444 | case DW_MACRO_GNU_start_file: |
2e276125 | 16445 | { |
891d2f0b | 16446 | unsigned int bytes_read; |
2e276125 JB |
16447 | int line, file; |
16448 | ||
16449 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
16450 | mac_ptr += bytes_read; | |
16451 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
16452 | mac_ptr += bytes_read; | |
16453 | ||
3e43a32a MS |
16454 | if ((line == 0 && !at_commandline) |
16455 | || (line != 0 && at_commandline)) | |
757a13d0 JK |
16456 | complaint (&symfile_complaints, |
16457 | _("debug info gives source %d included " | |
16458 | "from %s at %s line %d"), | |
16459 | file, at_commandline ? _("command-line") : _("file"), | |
16460 | line == 0 ? _("zero") : _("non-zero"), line); | |
16461 | ||
16462 | if (at_commandline) | |
16463 | { | |
cf2c3c16 TT |
16464 | /* This DW_MACRO_GNU_start_file was executed in the |
16465 | pass one. */ | |
757a13d0 JK |
16466 | at_commandline = 0; |
16467 | } | |
16468 | else | |
16469 | current_file = macro_start_file (file, line, | |
16470 | current_file, comp_dir, | |
cf2c3c16 | 16471 | lh, objfile); |
2e276125 JB |
16472 | } |
16473 | break; | |
16474 | ||
cf2c3c16 | 16475 | case DW_MACRO_GNU_end_file: |
2e276125 | 16476 | if (! current_file) |
4d3c2250 | 16477 | complaint (&symfile_complaints, |
3e43a32a MS |
16478 | _("macro debug info has an unmatched " |
16479 | "`close_file' directive")); | |
2e276125 JB |
16480 | else |
16481 | { | |
16482 | current_file = current_file->included_by; | |
16483 | if (! current_file) | |
16484 | { | |
cf2c3c16 | 16485 | enum dwarf_macro_record_type next_type; |
2e276125 JB |
16486 | |
16487 | /* GCC circa March 2002 doesn't produce the zero | |
16488 | type byte marking the end of the compilation | |
16489 | unit. Complain if it's not there, but exit no | |
16490 | matter what. */ | |
16491 | ||
16492 | /* Do we at least have room for a macinfo type byte? */ | |
16493 | if (mac_ptr >= mac_end) | |
16494 | { | |
f664829e | 16495 | dwarf2_section_buffer_overflow_complaint (section); |
2e276125 JB |
16496 | return; |
16497 | } | |
16498 | ||
16499 | /* We don't increment mac_ptr here, so this is just | |
16500 | a look-ahead. */ | |
16501 | next_type = read_1_byte (abfd, mac_ptr); | |
16502 | if (next_type != 0) | |
4d3c2250 | 16503 | complaint (&symfile_complaints, |
3e43a32a MS |
16504 | _("no terminating 0-type entry for " |
16505 | "macros in `.debug_macinfo' section")); | |
2e276125 JB |
16506 | |
16507 | return; | |
16508 | } | |
16509 | } | |
16510 | break; | |
16511 | ||
cf2c3c16 TT |
16512 | case DW_MACRO_GNU_transparent_include: |
16513 | { | |
16514 | LONGEST offset; | |
8fc3fc34 | 16515 | void **slot; |
cf2c3c16 TT |
16516 | |
16517 | offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
16518 | mac_ptr += offset_size; | |
16519 | ||
8fc3fc34 TT |
16520 | slot = htab_find_slot (include_hash, mac_ptr, INSERT); |
16521 | if (*slot != NULL) | |
16522 | { | |
16523 | /* This has actually happened; see | |
16524 | http://sourceware.org/bugzilla/show_bug.cgi?id=13568. */ | |
16525 | complaint (&symfile_complaints, | |
16526 | _("recursive DW_MACRO_GNU_transparent_include in " | |
16527 | ".debug_macro section")); | |
16528 | } | |
16529 | else | |
16530 | { | |
16531 | *slot = mac_ptr; | |
16532 | ||
16533 | dwarf_decode_macro_bytes (abfd, | |
16534 | section->buffer + offset, | |
16535 | mac_end, current_file, | |
16536 | lh, comp_dir, | |
16537 | section, section_is_gnu, | |
16538 | offset_size, objfile, include_hash); | |
16539 | ||
16540 | htab_remove_elt (include_hash, mac_ptr); | |
16541 | } | |
cf2c3c16 TT |
16542 | } |
16543 | break; | |
16544 | ||
2e276125 | 16545 | case DW_MACINFO_vendor_ext: |
cf2c3c16 TT |
16546 | if (!section_is_gnu) |
16547 | { | |
16548 | unsigned int bytes_read; | |
16549 | int constant; | |
2e276125 | 16550 | |
cf2c3c16 TT |
16551 | constant = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
16552 | mac_ptr += bytes_read; | |
16553 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
16554 | mac_ptr += bytes_read; | |
2e276125 | 16555 | |
cf2c3c16 TT |
16556 | /* We don't recognize any vendor extensions. */ |
16557 | break; | |
16558 | } | |
16559 | /* FALLTHROUGH */ | |
16560 | ||
16561 | default: | |
16562 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 16563 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
16564 | section); |
16565 | if (mac_ptr == NULL) | |
16566 | return; | |
16567 | break; | |
2e276125 | 16568 | } |
757a13d0 | 16569 | } while (macinfo_type != 0); |
2e276125 | 16570 | } |
8e19ed76 | 16571 | |
cf2c3c16 | 16572 | static void |
09262596 DE |
16573 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, |
16574 | char *comp_dir, int section_is_gnu) | |
cf2c3c16 | 16575 | { |
bb5ed363 | 16576 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
09262596 DE |
16577 | struct line_header *lh = cu->line_header; |
16578 | bfd *abfd; | |
cf2c3c16 TT |
16579 | gdb_byte *mac_ptr, *mac_end; |
16580 | struct macro_source_file *current_file = 0; | |
16581 | enum dwarf_macro_record_type macinfo_type; | |
16582 | unsigned int offset_size = cu->header.offset_size; | |
16583 | gdb_byte *opcode_definitions[256]; | |
8fc3fc34 TT |
16584 | struct cleanup *cleanup; |
16585 | htab_t include_hash; | |
16586 | void **slot; | |
09262596 DE |
16587 | struct dwarf2_section_info *section; |
16588 | const char *section_name; | |
16589 | ||
16590 | if (cu->dwo_unit != NULL) | |
16591 | { | |
16592 | if (section_is_gnu) | |
16593 | { | |
16594 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
16595 | section_name = ".debug_macro.dwo"; | |
16596 | } | |
16597 | else | |
16598 | { | |
16599 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
16600 | section_name = ".debug_macinfo.dwo"; | |
16601 | } | |
16602 | } | |
16603 | else | |
16604 | { | |
16605 | if (section_is_gnu) | |
16606 | { | |
16607 | section = &dwarf2_per_objfile->macro; | |
16608 | section_name = ".debug_macro"; | |
16609 | } | |
16610 | else | |
16611 | { | |
16612 | section = &dwarf2_per_objfile->macinfo; | |
16613 | section_name = ".debug_macinfo"; | |
16614 | } | |
16615 | } | |
cf2c3c16 | 16616 | |
bb5ed363 | 16617 | dwarf2_read_section (objfile, section); |
cf2c3c16 TT |
16618 | if (section->buffer == NULL) |
16619 | { | |
fceca515 | 16620 | complaint (&symfile_complaints, _("missing %s section"), section_name); |
cf2c3c16 TT |
16621 | return; |
16622 | } | |
09262596 | 16623 | abfd = section->asection->owner; |
cf2c3c16 TT |
16624 | |
16625 | /* First pass: Find the name of the base filename. | |
16626 | This filename is needed in order to process all macros whose definition | |
16627 | (or undefinition) comes from the command line. These macros are defined | |
16628 | before the first DW_MACINFO_start_file entry, and yet still need to be | |
16629 | associated to the base file. | |
16630 | ||
16631 | To determine the base file name, we scan the macro definitions until we | |
16632 | reach the first DW_MACINFO_start_file entry. We then initialize | |
16633 | CURRENT_FILE accordingly so that any macro definition found before the | |
16634 | first DW_MACINFO_start_file can still be associated to the base file. */ | |
16635 | ||
16636 | mac_ptr = section->buffer + offset; | |
16637 | mac_end = section->buffer + section->size; | |
16638 | ||
16639 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, | |
16640 | &offset_size, section_is_gnu); | |
16641 | if (mac_ptr == NULL) | |
16642 | { | |
16643 | /* We already issued a complaint. */ | |
16644 | return; | |
16645 | } | |
16646 | ||
16647 | do | |
16648 | { | |
16649 | /* Do we at least have room for a macinfo type byte? */ | |
16650 | if (mac_ptr >= mac_end) | |
16651 | { | |
16652 | /* Complaint is printed during the second pass as GDB will probably | |
16653 | stop the first pass earlier upon finding | |
16654 | DW_MACINFO_start_file. */ | |
16655 | break; | |
16656 | } | |
16657 | ||
16658 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
16659 | mac_ptr++; | |
16660 | ||
16661 | /* Note that we rely on the fact that the corresponding GNU and | |
16662 | DWARF constants are the same. */ | |
16663 | switch (macinfo_type) | |
16664 | { | |
16665 | /* A zero macinfo type indicates the end of the macro | |
16666 | information. */ | |
16667 | case 0: | |
16668 | break; | |
16669 | ||
16670 | case DW_MACRO_GNU_define: | |
16671 | case DW_MACRO_GNU_undef: | |
16672 | /* Only skip the data by MAC_PTR. */ | |
16673 | { | |
16674 | unsigned int bytes_read; | |
16675 | ||
16676 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
16677 | mac_ptr += bytes_read; | |
16678 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
16679 | mac_ptr += bytes_read; | |
16680 | } | |
16681 | break; | |
16682 | ||
16683 | case DW_MACRO_GNU_start_file: | |
16684 | { | |
16685 | unsigned int bytes_read; | |
16686 | int line, file; | |
16687 | ||
16688 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
16689 | mac_ptr += bytes_read; | |
16690 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
16691 | mac_ptr += bytes_read; | |
16692 | ||
16693 | current_file = macro_start_file (file, line, current_file, | |
bb5ed363 | 16694 | comp_dir, lh, objfile); |
cf2c3c16 TT |
16695 | } |
16696 | break; | |
16697 | ||
16698 | case DW_MACRO_GNU_end_file: | |
16699 | /* No data to skip by MAC_PTR. */ | |
16700 | break; | |
16701 | ||
16702 | case DW_MACRO_GNU_define_indirect: | |
16703 | case DW_MACRO_GNU_undef_indirect: | |
16704 | { | |
16705 | unsigned int bytes_read; | |
16706 | ||
16707 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
16708 | mac_ptr += bytes_read; | |
16709 | mac_ptr += offset_size; | |
16710 | } | |
16711 | break; | |
16712 | ||
16713 | case DW_MACRO_GNU_transparent_include: | |
16714 | /* Note that, according to the spec, a transparent include | |
16715 | chain cannot call DW_MACRO_GNU_start_file. So, we can just | |
16716 | skip this opcode. */ | |
16717 | mac_ptr += offset_size; | |
16718 | break; | |
16719 | ||
16720 | case DW_MACINFO_vendor_ext: | |
16721 | /* Only skip the data by MAC_PTR. */ | |
16722 | if (!section_is_gnu) | |
16723 | { | |
16724 | unsigned int bytes_read; | |
16725 | ||
16726 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
16727 | mac_ptr += bytes_read; | |
16728 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
16729 | mac_ptr += bytes_read; | |
16730 | } | |
16731 | /* FALLTHROUGH */ | |
16732 | ||
16733 | default: | |
16734 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 16735 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
16736 | section); |
16737 | if (mac_ptr == NULL) | |
16738 | return; | |
16739 | break; | |
16740 | } | |
16741 | } while (macinfo_type != 0 && current_file == NULL); | |
16742 | ||
16743 | /* Second pass: Process all entries. | |
16744 | ||
16745 | Use the AT_COMMAND_LINE flag to determine whether we are still processing | |
16746 | command-line macro definitions/undefinitions. This flag is unset when we | |
16747 | reach the first DW_MACINFO_start_file entry. */ | |
16748 | ||
8fc3fc34 TT |
16749 | include_hash = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
16750 | NULL, xcalloc, xfree); | |
16751 | cleanup = make_cleanup_htab_delete (include_hash); | |
16752 | mac_ptr = section->buffer + offset; | |
16753 | slot = htab_find_slot (include_hash, mac_ptr, INSERT); | |
16754 | *slot = mac_ptr; | |
16755 | dwarf_decode_macro_bytes (abfd, mac_ptr, mac_end, | |
cf2c3c16 | 16756 | current_file, lh, comp_dir, section, section_is_gnu, |
8fc3fc34 TT |
16757 | offset_size, objfile, include_hash); |
16758 | do_cleanups (cleanup); | |
cf2c3c16 TT |
16759 | } |
16760 | ||
8e19ed76 | 16761 | /* Check if the attribute's form is a DW_FORM_block* |
0963b4bd | 16762 | if so return true else false. */ |
380bca97 | 16763 | |
8e19ed76 PS |
16764 | static int |
16765 | attr_form_is_block (struct attribute *attr) | |
16766 | { | |
16767 | return (attr == NULL ? 0 : | |
16768 | attr->form == DW_FORM_block1 | |
16769 | || attr->form == DW_FORM_block2 | |
16770 | || attr->form == DW_FORM_block4 | |
2dc7f7b3 TT |
16771 | || attr->form == DW_FORM_block |
16772 | || attr->form == DW_FORM_exprloc); | |
8e19ed76 | 16773 | } |
4c2df51b | 16774 | |
c6a0999f JB |
16775 | /* Return non-zero if ATTR's value is a section offset --- classes |
16776 | lineptr, loclistptr, macptr or rangelistptr --- or zero, otherwise. | |
16777 | You may use DW_UNSND (attr) to retrieve such offsets. | |
16778 | ||
16779 | Section 7.5.4, "Attribute Encodings", explains that no attribute | |
16780 | may have a value that belongs to more than one of these classes; it | |
16781 | would be ambiguous if we did, because we use the same forms for all | |
16782 | of them. */ | |
380bca97 | 16783 | |
3690dd37 JB |
16784 | static int |
16785 | attr_form_is_section_offset (struct attribute *attr) | |
16786 | { | |
16787 | return (attr->form == DW_FORM_data4 | |
2dc7f7b3 TT |
16788 | || attr->form == DW_FORM_data8 |
16789 | || attr->form == DW_FORM_sec_offset); | |
3690dd37 JB |
16790 | } |
16791 | ||
3690dd37 JB |
16792 | /* Return non-zero if ATTR's value falls in the 'constant' class, or |
16793 | zero otherwise. When this function returns true, you can apply | |
16794 | dwarf2_get_attr_constant_value to it. | |
16795 | ||
16796 | However, note that for some attributes you must check | |
16797 | attr_form_is_section_offset before using this test. DW_FORM_data4 | |
16798 | and DW_FORM_data8 are members of both the constant class, and of | |
16799 | the classes that contain offsets into other debug sections | |
16800 | (lineptr, loclistptr, macptr or rangelistptr). The DWARF spec says | |
16801 | that, if an attribute's can be either a constant or one of the | |
16802 | section offset classes, DW_FORM_data4 and DW_FORM_data8 should be | |
16803 | taken as section offsets, not constants. */ | |
380bca97 | 16804 | |
3690dd37 JB |
16805 | static int |
16806 | attr_form_is_constant (struct attribute *attr) | |
16807 | { | |
16808 | switch (attr->form) | |
16809 | { | |
16810 | case DW_FORM_sdata: | |
16811 | case DW_FORM_udata: | |
16812 | case DW_FORM_data1: | |
16813 | case DW_FORM_data2: | |
16814 | case DW_FORM_data4: | |
16815 | case DW_FORM_data8: | |
16816 | return 1; | |
16817 | default: | |
16818 | return 0; | |
16819 | } | |
16820 | } | |
16821 | ||
3019eac3 DE |
16822 | /* Return the .debug_loc section to use for CU. |
16823 | For DWO files use .debug_loc.dwo. */ | |
16824 | ||
16825 | static struct dwarf2_section_info * | |
16826 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
16827 | { | |
16828 | if (cu->dwo_unit) | |
16829 | return &cu->dwo_unit->dwo_file->sections.loc; | |
16830 | return &dwarf2_per_objfile->loc; | |
16831 | } | |
16832 | ||
8cf6f0b1 TT |
16833 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
16834 | ||
16835 | static void | |
16836 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
16837 | struct dwarf2_loclist_baton *baton, | |
16838 | struct attribute *attr) | |
16839 | { | |
3019eac3 DE |
16840 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
16841 | ||
16842 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
8cf6f0b1 TT |
16843 | |
16844 | baton->per_cu = cu->per_cu; | |
16845 | gdb_assert (baton->per_cu); | |
16846 | /* We don't know how long the location list is, but make sure we | |
16847 | don't run off the edge of the section. */ | |
3019eac3 DE |
16848 | baton->size = section->size - DW_UNSND (attr); |
16849 | baton->data = section->buffer + DW_UNSND (attr); | |
8cf6f0b1 | 16850 | baton->base_address = cu->base_address; |
f664829e | 16851 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
16852 | } |
16853 | ||
4c2df51b DJ |
16854 | static void |
16855 | dwarf2_symbol_mark_computed (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 16856 | struct dwarf2_cu *cu) |
4c2df51b | 16857 | { |
bb5ed363 | 16858 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 | 16859 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 16860 | |
3690dd37 | 16861 | if (attr_form_is_section_offset (attr) |
3019eac3 | 16862 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
16863 | the section. If so, fall through to the complaint in the |
16864 | other branch. */ | |
3019eac3 | 16865 | && DW_UNSND (attr) < dwarf2_section_size (objfile, section)) |
4c2df51b | 16866 | { |
0d53c4c4 | 16867 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 16868 | |
bb5ed363 | 16869 | baton = obstack_alloc (&objfile->objfile_obstack, |
0d53c4c4 | 16870 | sizeof (struct dwarf2_loclist_baton)); |
4c2df51b | 16871 | |
8cf6f0b1 | 16872 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 16873 | |
d00adf39 | 16874 | if (cu->base_known == 0) |
0d53c4c4 | 16875 | complaint (&symfile_complaints, |
3e43a32a MS |
16876 | _("Location list used without " |
16877 | "specifying the CU base address.")); | |
4c2df51b | 16878 | |
768a979c | 16879 | SYMBOL_COMPUTED_OPS (sym) = &dwarf2_loclist_funcs; |
0d53c4c4 DJ |
16880 | SYMBOL_LOCATION_BATON (sym) = baton; |
16881 | } | |
16882 | else | |
16883 | { | |
16884 | struct dwarf2_locexpr_baton *baton; | |
16885 | ||
bb5ed363 | 16886 | baton = obstack_alloc (&objfile->objfile_obstack, |
0d53c4c4 | 16887 | sizeof (struct dwarf2_locexpr_baton)); |
ae0d2f24 UW |
16888 | baton->per_cu = cu->per_cu; |
16889 | gdb_assert (baton->per_cu); | |
0d53c4c4 DJ |
16890 | |
16891 | if (attr_form_is_block (attr)) | |
16892 | { | |
16893 | /* Note that we're just copying the block's data pointer | |
16894 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
16895 | info_buffer for SYM's objfile; right now we never release |
16896 | that buffer, but when we do clean up properly this may | |
16897 | need to change. */ | |
0d53c4c4 DJ |
16898 | baton->size = DW_BLOCK (attr)->size; |
16899 | baton->data = DW_BLOCK (attr)->data; | |
16900 | } | |
16901 | else | |
16902 | { | |
16903 | dwarf2_invalid_attrib_class_complaint ("location description", | |
16904 | SYMBOL_NATURAL_NAME (sym)); | |
16905 | baton->size = 0; | |
0d53c4c4 | 16906 | } |
6e70227d | 16907 | |
768a979c | 16908 | SYMBOL_COMPUTED_OPS (sym) = &dwarf2_locexpr_funcs; |
0d53c4c4 DJ |
16909 | SYMBOL_LOCATION_BATON (sym) = baton; |
16910 | } | |
4c2df51b | 16911 | } |
6502dd73 | 16912 | |
9aa1f1e3 TT |
16913 | /* Return the OBJFILE associated with the compilation unit CU. If CU |
16914 | came from a separate debuginfo file, then the master objfile is | |
16915 | returned. */ | |
ae0d2f24 UW |
16916 | |
16917 | struct objfile * | |
16918 | dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *per_cu) | |
16919 | { | |
9291a0cd | 16920 | struct objfile *objfile = per_cu->objfile; |
ae0d2f24 UW |
16921 | |
16922 | /* Return the master objfile, so that we can report and look up the | |
16923 | correct file containing this variable. */ | |
16924 | if (objfile->separate_debug_objfile_backlink) | |
16925 | objfile = objfile->separate_debug_objfile_backlink; | |
16926 | ||
16927 | return objfile; | |
16928 | } | |
16929 | ||
96408a79 SA |
16930 | /* Return comp_unit_head for PER_CU, either already available in PER_CU->CU |
16931 | (CU_HEADERP is unused in such case) or prepare a temporary copy at | |
16932 | CU_HEADERP first. */ | |
16933 | ||
16934 | static const struct comp_unit_head * | |
16935 | per_cu_header_read_in (struct comp_unit_head *cu_headerp, | |
16936 | struct dwarf2_per_cu_data *per_cu) | |
16937 | { | |
96408a79 SA |
16938 | gdb_byte *info_ptr; |
16939 | ||
16940 | if (per_cu->cu) | |
16941 | return &per_cu->cu->header; | |
16942 | ||
0bc3a05c | 16943 | info_ptr = per_cu->info_or_types_section->buffer + per_cu->offset.sect_off; |
96408a79 SA |
16944 | |
16945 | memset (cu_headerp, 0, sizeof (*cu_headerp)); | |
0bc3a05c | 16946 | read_comp_unit_head (cu_headerp, info_ptr, per_cu->objfile->obfd); |
96408a79 SA |
16947 | |
16948 | return cu_headerp; | |
16949 | } | |
16950 | ||
ae0d2f24 UW |
16951 | /* Return the address size given in the compilation unit header for CU. */ |
16952 | ||
98714339 | 16953 | int |
ae0d2f24 UW |
16954 | dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *per_cu) |
16955 | { | |
96408a79 SA |
16956 | struct comp_unit_head cu_header_local; |
16957 | const struct comp_unit_head *cu_headerp; | |
c471e790 | 16958 | |
96408a79 SA |
16959 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
16960 | ||
16961 | return cu_headerp->addr_size; | |
ae0d2f24 UW |
16962 | } |
16963 | ||
9eae7c52 TT |
16964 | /* Return the offset size given in the compilation unit header for CU. */ |
16965 | ||
16966 | int | |
16967 | dwarf2_per_cu_offset_size (struct dwarf2_per_cu_data *per_cu) | |
16968 | { | |
96408a79 SA |
16969 | struct comp_unit_head cu_header_local; |
16970 | const struct comp_unit_head *cu_headerp; | |
9c6c53f7 | 16971 | |
96408a79 SA |
16972 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
16973 | ||
16974 | return cu_headerp->offset_size; | |
16975 | } | |
16976 | ||
16977 | /* See its dwarf2loc.h declaration. */ | |
16978 | ||
16979 | int | |
16980 | dwarf2_per_cu_ref_addr_size (struct dwarf2_per_cu_data *per_cu) | |
16981 | { | |
16982 | struct comp_unit_head cu_header_local; | |
16983 | const struct comp_unit_head *cu_headerp; | |
16984 | ||
16985 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); | |
16986 | ||
16987 | if (cu_headerp->version == 2) | |
16988 | return cu_headerp->addr_size; | |
16989 | else | |
16990 | return cu_headerp->offset_size; | |
181cebd4 JK |
16991 | } |
16992 | ||
9aa1f1e3 TT |
16993 | /* Return the text offset of the CU. The returned offset comes from |
16994 | this CU's objfile. If this objfile came from a separate debuginfo | |
16995 | file, then the offset may be different from the corresponding | |
16996 | offset in the parent objfile. */ | |
16997 | ||
16998 | CORE_ADDR | |
16999 | dwarf2_per_cu_text_offset (struct dwarf2_per_cu_data *per_cu) | |
17000 | { | |
bb3fa9d0 | 17001 | struct objfile *objfile = per_cu->objfile; |
9aa1f1e3 TT |
17002 | |
17003 | return ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
17004 | } | |
17005 | ||
348e048f DE |
17006 | /* Locate the .debug_info compilation unit from CU's objfile which contains |
17007 | the DIE at OFFSET. Raises an error on failure. */ | |
ae038cb0 DJ |
17008 | |
17009 | static struct dwarf2_per_cu_data * | |
b64f50a1 | 17010 | dwarf2_find_containing_comp_unit (sect_offset offset, |
ae038cb0 DJ |
17011 | struct objfile *objfile) |
17012 | { | |
17013 | struct dwarf2_per_cu_data *this_cu; | |
17014 | int low, high; | |
17015 | ||
ae038cb0 DJ |
17016 | low = 0; |
17017 | high = dwarf2_per_objfile->n_comp_units - 1; | |
17018 | while (high > low) | |
17019 | { | |
17020 | int mid = low + (high - low) / 2; | |
9a619af0 | 17021 | |
b64f50a1 JK |
17022 | if (dwarf2_per_objfile->all_comp_units[mid]->offset.sect_off |
17023 | >= offset.sect_off) | |
ae038cb0 DJ |
17024 | high = mid; |
17025 | else | |
17026 | low = mid + 1; | |
17027 | } | |
17028 | gdb_assert (low == high); | |
b64f50a1 JK |
17029 | if (dwarf2_per_objfile->all_comp_units[low]->offset.sect_off |
17030 | > offset.sect_off) | |
ae038cb0 | 17031 | { |
10b3939b | 17032 | if (low == 0) |
8a3fe4f8 AC |
17033 | error (_("Dwarf Error: could not find partial DIE containing " |
17034 | "offset 0x%lx [in module %s]"), | |
b64f50a1 | 17035 | (long) offset.sect_off, bfd_get_filename (objfile->obfd)); |
10b3939b | 17036 | |
b64f50a1 JK |
17037 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->offset.sect_off |
17038 | <= offset.sect_off); | |
ae038cb0 DJ |
17039 | return dwarf2_per_objfile->all_comp_units[low-1]; |
17040 | } | |
17041 | else | |
17042 | { | |
17043 | this_cu = dwarf2_per_objfile->all_comp_units[low]; | |
17044 | if (low == dwarf2_per_objfile->n_comp_units - 1 | |
b64f50a1 JK |
17045 | && offset.sect_off >= this_cu->offset.sect_off + this_cu->length) |
17046 | error (_("invalid dwarf2 offset %u"), offset.sect_off); | |
17047 | gdb_assert (offset.sect_off < this_cu->offset.sect_off + this_cu->length); | |
ae038cb0 DJ |
17048 | return this_cu; |
17049 | } | |
17050 | } | |
17051 | ||
23745b47 | 17052 | /* Initialize dwarf2_cu CU, owned by PER_CU. */ |
93311388 | 17053 | |
9816fde3 | 17054 | static void |
23745b47 | 17055 | init_one_comp_unit (struct dwarf2_cu *cu, struct dwarf2_per_cu_data *per_cu) |
93311388 | 17056 | { |
9816fde3 | 17057 | memset (cu, 0, sizeof (*cu)); |
23745b47 DE |
17058 | per_cu->cu = cu; |
17059 | cu->per_cu = per_cu; | |
17060 | cu->objfile = per_cu->objfile; | |
93311388 | 17061 | obstack_init (&cu->comp_unit_obstack); |
9816fde3 JK |
17062 | } |
17063 | ||
17064 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
17065 | ||
17066 | static void | |
95554aad TT |
17067 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
17068 | enum language pretend_language) | |
9816fde3 JK |
17069 | { |
17070 | struct attribute *attr; | |
17071 | ||
17072 | /* Set the language we're debugging. */ | |
17073 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
17074 | if (attr) | |
17075 | set_cu_language (DW_UNSND (attr), cu); | |
17076 | else | |
9cded63f | 17077 | { |
95554aad | 17078 | cu->language = pretend_language; |
9cded63f TT |
17079 | cu->language_defn = language_def (cu->language); |
17080 | } | |
dee91e82 DE |
17081 | |
17082 | attr = dwarf2_attr (comp_unit_die, DW_AT_producer, cu); | |
17083 | if (attr) | |
17084 | cu->producer = DW_STRING (attr); | |
93311388 DE |
17085 | } |
17086 | ||
ae038cb0 DJ |
17087 | /* Release one cached compilation unit, CU. We unlink it from the tree |
17088 | of compilation units, but we don't remove it from the read_in_chain; | |
93311388 DE |
17089 | the caller is responsible for that. |
17090 | NOTE: DATA is a void * because this function is also used as a | |
17091 | cleanup routine. */ | |
ae038cb0 DJ |
17092 | |
17093 | static void | |
68dc6402 | 17094 | free_heap_comp_unit (void *data) |
ae038cb0 DJ |
17095 | { |
17096 | struct dwarf2_cu *cu = data; | |
17097 | ||
23745b47 DE |
17098 | gdb_assert (cu->per_cu != NULL); |
17099 | cu->per_cu->cu = NULL; | |
ae038cb0 DJ |
17100 | cu->per_cu = NULL; |
17101 | ||
17102 | obstack_free (&cu->comp_unit_obstack, NULL); | |
17103 | ||
17104 | xfree (cu); | |
17105 | } | |
17106 | ||
72bf9492 | 17107 | /* This cleanup function is passed the address of a dwarf2_cu on the stack |
ae038cb0 | 17108 | when we're finished with it. We can't free the pointer itself, but be |
dee91e82 | 17109 | sure to unlink it from the cache. Also release any associated storage. */ |
72bf9492 DJ |
17110 | |
17111 | static void | |
17112 | free_stack_comp_unit (void *data) | |
17113 | { | |
17114 | struct dwarf2_cu *cu = data; | |
17115 | ||
23745b47 DE |
17116 | gdb_assert (cu->per_cu != NULL); |
17117 | cu->per_cu->cu = NULL; | |
17118 | cu->per_cu = NULL; | |
17119 | ||
72bf9492 DJ |
17120 | obstack_free (&cu->comp_unit_obstack, NULL); |
17121 | cu->partial_dies = NULL; | |
ae038cb0 DJ |
17122 | } |
17123 | ||
17124 | /* Free all cached compilation units. */ | |
17125 | ||
17126 | static void | |
17127 | free_cached_comp_units (void *data) | |
17128 | { | |
17129 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
17130 | ||
17131 | per_cu = dwarf2_per_objfile->read_in_chain; | |
17132 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
17133 | while (per_cu != NULL) | |
17134 | { | |
17135 | struct dwarf2_per_cu_data *next_cu; | |
17136 | ||
17137 | next_cu = per_cu->cu->read_in_chain; | |
17138 | ||
68dc6402 | 17139 | free_heap_comp_unit (per_cu->cu); |
ae038cb0 DJ |
17140 | *last_chain = next_cu; |
17141 | ||
17142 | per_cu = next_cu; | |
17143 | } | |
17144 | } | |
17145 | ||
17146 | /* Increase the age counter on each cached compilation unit, and free | |
17147 | any that are too old. */ | |
17148 | ||
17149 | static void | |
17150 | age_cached_comp_units (void) | |
17151 | { | |
17152 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
17153 | ||
17154 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
17155 | per_cu = dwarf2_per_objfile->read_in_chain; | |
17156 | while (per_cu != NULL) | |
17157 | { | |
17158 | per_cu->cu->last_used ++; | |
17159 | if (per_cu->cu->last_used <= dwarf2_max_cache_age) | |
17160 | dwarf2_mark (per_cu->cu); | |
17161 | per_cu = per_cu->cu->read_in_chain; | |
17162 | } | |
17163 | ||
17164 | per_cu = dwarf2_per_objfile->read_in_chain; | |
17165 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
17166 | while (per_cu != NULL) | |
17167 | { | |
17168 | struct dwarf2_per_cu_data *next_cu; | |
17169 | ||
17170 | next_cu = per_cu->cu->read_in_chain; | |
17171 | ||
17172 | if (!per_cu->cu->mark) | |
17173 | { | |
68dc6402 | 17174 | free_heap_comp_unit (per_cu->cu); |
ae038cb0 DJ |
17175 | *last_chain = next_cu; |
17176 | } | |
17177 | else | |
17178 | last_chain = &per_cu->cu->read_in_chain; | |
17179 | ||
17180 | per_cu = next_cu; | |
17181 | } | |
17182 | } | |
17183 | ||
17184 | /* Remove a single compilation unit from the cache. */ | |
17185 | ||
17186 | static void | |
dee91e82 | 17187 | free_one_cached_comp_unit (struct dwarf2_per_cu_data *target_per_cu) |
ae038cb0 DJ |
17188 | { |
17189 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
17190 | ||
17191 | per_cu = dwarf2_per_objfile->read_in_chain; | |
17192 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
17193 | while (per_cu != NULL) | |
17194 | { | |
17195 | struct dwarf2_per_cu_data *next_cu; | |
17196 | ||
17197 | next_cu = per_cu->cu->read_in_chain; | |
17198 | ||
dee91e82 | 17199 | if (per_cu == target_per_cu) |
ae038cb0 | 17200 | { |
68dc6402 | 17201 | free_heap_comp_unit (per_cu->cu); |
dee91e82 | 17202 | per_cu->cu = NULL; |
ae038cb0 DJ |
17203 | *last_chain = next_cu; |
17204 | break; | |
17205 | } | |
17206 | else | |
17207 | last_chain = &per_cu->cu->read_in_chain; | |
17208 | ||
17209 | per_cu = next_cu; | |
17210 | } | |
17211 | } | |
17212 | ||
fe3e1990 DJ |
17213 | /* Release all extra memory associated with OBJFILE. */ |
17214 | ||
17215 | void | |
17216 | dwarf2_free_objfile (struct objfile *objfile) | |
17217 | { | |
17218 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
17219 | ||
17220 | if (dwarf2_per_objfile == NULL) | |
17221 | return; | |
17222 | ||
17223 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
17224 | free_cached_comp_units (NULL); | |
17225 | ||
7b9f3c50 DE |
17226 | if (dwarf2_per_objfile->quick_file_names_table) |
17227 | htab_delete (dwarf2_per_objfile->quick_file_names_table); | |
9291a0cd | 17228 | |
fe3e1990 DJ |
17229 | /* Everything else should be on the objfile obstack. */ |
17230 | } | |
17231 | ||
dee91e82 DE |
17232 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
17233 | We store these in a hash table separate from the DIEs, and preserve them | |
17234 | when the DIEs are flushed out of cache. | |
17235 | ||
17236 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 DE |
17237 | uniquely identify the type. A file may have multiple .debug_types sections, |
17238 | or the type may come from a DWO file. We have to use something in | |
17239 | dwarf2_per_cu_data (or the pointer to it) because we can enter the lookup | |
17240 | routine, get_die_type_at_offset, from outside this file, and thus won't | |
17241 | necessarily have PER_CU->cu. Fortunately, PER_CU is stable for the life | |
17242 | of the objfile. */ | |
1c379e20 | 17243 | |
dee91e82 | 17244 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 17245 | { |
dee91e82 | 17246 | const struct dwarf2_per_cu_data *per_cu; |
b64f50a1 | 17247 | sect_offset offset; |
1c379e20 DJ |
17248 | struct type *type; |
17249 | }; | |
17250 | ||
dee91e82 | 17251 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
17252 | |
17253 | static hashval_t | |
dee91e82 | 17254 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 17255 | { |
dee91e82 | 17256 | const struct dwarf2_per_cu_offset_and_type *ofs = item; |
9a619af0 | 17257 | |
dee91e82 | 17258 | return (uintptr_t) ofs->per_cu + ofs->offset.sect_off; |
1c379e20 DJ |
17259 | } |
17260 | ||
dee91e82 | 17261 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
17262 | |
17263 | static int | |
dee91e82 | 17264 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 17265 | { |
dee91e82 DE |
17266 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs = item_lhs; |
17267 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs = item_rhs; | |
9a619af0 | 17268 | |
dee91e82 DE |
17269 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
17270 | && ofs_lhs->offset.sect_off == ofs_rhs->offset.sect_off); | |
1c379e20 DJ |
17271 | } |
17272 | ||
17273 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
17274 | table if necessary. For convenience, return TYPE. |
17275 | ||
17276 | The DIEs reading must have careful ordering to: | |
17277 | * Not cause infite loops trying to read in DIEs as a prerequisite for | |
17278 | reading current DIE. | |
17279 | * Not trying to dereference contents of still incompletely read in types | |
17280 | while reading in other DIEs. | |
17281 | * Enable referencing still incompletely read in types just by a pointer to | |
17282 | the type without accessing its fields. | |
17283 | ||
17284 | Therefore caller should follow these rules: | |
17285 | * Try to fetch any prerequisite types we may need to build this DIE type | |
17286 | before building the type and calling set_die_type. | |
e71ec853 | 17287 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
17288 | possible before fetching more types to complete the current type. |
17289 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 17290 | |
f792889a | 17291 | static struct type * |
1c379e20 DJ |
17292 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
17293 | { | |
dee91e82 | 17294 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
673bfd45 | 17295 | struct objfile *objfile = cu->objfile; |
1c379e20 | 17296 | |
b4ba55a1 JB |
17297 | /* For Ada types, make sure that the gnat-specific data is always |
17298 | initialized (if not already set). There are a few types where | |
17299 | we should not be doing so, because the type-specific area is | |
17300 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
17301 | where the type-specific area is used to store the floatformat). | |
17302 | But this is not a problem, because the gnat-specific information | |
17303 | is actually not needed for these types. */ | |
17304 | if (need_gnat_info (cu) | |
17305 | && TYPE_CODE (type) != TYPE_CODE_FUNC | |
17306 | && TYPE_CODE (type) != TYPE_CODE_FLT | |
17307 | && !HAVE_GNAT_AUX_INFO (type)) | |
17308 | INIT_GNAT_SPECIFIC (type); | |
17309 | ||
dee91e82 | 17310 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 17311 | { |
dee91e82 DE |
17312 | dwarf2_per_objfile->die_type_hash = |
17313 | htab_create_alloc_ex (127, | |
17314 | per_cu_offset_and_type_hash, | |
17315 | per_cu_offset_and_type_eq, | |
17316 | NULL, | |
17317 | &objfile->objfile_obstack, | |
17318 | hashtab_obstack_allocate, | |
17319 | dummy_obstack_deallocate); | |
f792889a | 17320 | } |
1c379e20 | 17321 | |
dee91e82 | 17322 | ofs.per_cu = cu->per_cu; |
1c379e20 DJ |
17323 | ofs.offset = die->offset; |
17324 | ofs.type = type; | |
dee91e82 DE |
17325 | slot = (struct dwarf2_per_cu_offset_and_type **) |
17326 | htab_find_slot (dwarf2_per_objfile->die_type_hash, &ofs, INSERT); | |
7e314c57 JK |
17327 | if (*slot) |
17328 | complaint (&symfile_complaints, | |
17329 | _("A problem internal to GDB: DIE 0x%x has type already set"), | |
b64f50a1 | 17330 | die->offset.sect_off); |
673bfd45 | 17331 | *slot = obstack_alloc (&objfile->objfile_obstack, sizeof (**slot)); |
1c379e20 | 17332 | **slot = ofs; |
f792889a | 17333 | return type; |
1c379e20 DJ |
17334 | } |
17335 | ||
380bca97 | 17336 | /* Look up the type for the die at OFFSET in the appropriate type_hash |
673bfd45 | 17337 | table, or return NULL if the die does not have a saved type. */ |
1c379e20 DJ |
17338 | |
17339 | static struct type * | |
b64f50a1 | 17340 | get_die_type_at_offset (sect_offset offset, |
673bfd45 | 17341 | struct dwarf2_per_cu_data *per_cu) |
1c379e20 | 17342 | { |
dee91e82 | 17343 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
f792889a | 17344 | |
dee91e82 | 17345 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 17346 | return NULL; |
1c379e20 | 17347 | |
dee91e82 | 17348 | ofs.per_cu = per_cu; |
673bfd45 | 17349 | ofs.offset = offset; |
dee91e82 | 17350 | slot = htab_find (dwarf2_per_objfile->die_type_hash, &ofs); |
1c379e20 DJ |
17351 | if (slot) |
17352 | return slot->type; | |
17353 | else | |
17354 | return NULL; | |
17355 | } | |
17356 | ||
673bfd45 DE |
17357 | /* Look up the type for DIE in the appropriate type_hash table, |
17358 | or return NULL if DIE does not have a saved type. */ | |
17359 | ||
17360 | static struct type * | |
17361 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
17362 | { | |
17363 | return get_die_type_at_offset (die->offset, cu->per_cu); | |
17364 | } | |
17365 | ||
10b3939b DJ |
17366 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
17367 | ||
17368 | static void | |
17369 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
17370 | struct dwarf2_per_cu_data *ref_per_cu) | |
17371 | { | |
17372 | void **slot; | |
17373 | ||
17374 | if (cu->dependencies == NULL) | |
17375 | cu->dependencies | |
17376 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
17377 | NULL, &cu->comp_unit_obstack, | |
17378 | hashtab_obstack_allocate, | |
17379 | dummy_obstack_deallocate); | |
17380 | ||
17381 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
17382 | if (*slot == NULL) | |
17383 | *slot = ref_per_cu; | |
17384 | } | |
1c379e20 | 17385 | |
f504f079 DE |
17386 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
17387 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
17388 | cache that we must keep because we are keeping CU. */ |
17389 | ||
10b3939b DJ |
17390 | static int |
17391 | dwarf2_mark_helper (void **slot, void *data) | |
17392 | { | |
17393 | struct dwarf2_per_cu_data *per_cu; | |
17394 | ||
17395 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
d07ed419 JK |
17396 | |
17397 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
17398 | reading of the chain. As such dependencies remain valid it is not much | |
17399 | useful to track and undo them during QUIT cleanups. */ | |
17400 | if (per_cu->cu == NULL) | |
17401 | return 1; | |
17402 | ||
10b3939b DJ |
17403 | if (per_cu->cu->mark) |
17404 | return 1; | |
17405 | per_cu->cu->mark = 1; | |
17406 | ||
17407 | if (per_cu->cu->dependencies != NULL) | |
17408 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
17409 | ||
17410 | return 1; | |
17411 | } | |
17412 | ||
f504f079 DE |
17413 | /* Set the mark field in CU and in every other compilation unit in the |
17414 | cache that we must keep because we are keeping CU. */ | |
17415 | ||
ae038cb0 DJ |
17416 | static void |
17417 | dwarf2_mark (struct dwarf2_cu *cu) | |
17418 | { | |
17419 | if (cu->mark) | |
17420 | return; | |
17421 | cu->mark = 1; | |
10b3939b DJ |
17422 | if (cu->dependencies != NULL) |
17423 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
17424 | } |
17425 | ||
17426 | static void | |
17427 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
17428 | { | |
17429 | while (per_cu) | |
17430 | { | |
17431 | per_cu->cu->mark = 0; | |
17432 | per_cu = per_cu->cu->read_in_chain; | |
17433 | } | |
72bf9492 DJ |
17434 | } |
17435 | ||
72bf9492 DJ |
17436 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
17437 | is its offset in .debug_info for this objfile. */ | |
17438 | ||
17439 | static hashval_t | |
17440 | partial_die_hash (const void *item) | |
17441 | { | |
17442 | const struct partial_die_info *part_die = item; | |
9a619af0 | 17443 | |
b64f50a1 | 17444 | return part_die->offset.sect_off; |
72bf9492 DJ |
17445 | } |
17446 | ||
17447 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
17448 | are equal if they have the same offset. */ | |
17449 | ||
17450 | static int | |
17451 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
17452 | { | |
17453 | const struct partial_die_info *part_die_lhs = item_lhs; | |
17454 | const struct partial_die_info *part_die_rhs = item_rhs; | |
9a619af0 | 17455 | |
b64f50a1 | 17456 | return part_die_lhs->offset.sect_off == part_die_rhs->offset.sect_off; |
72bf9492 DJ |
17457 | } |
17458 | ||
ae038cb0 DJ |
17459 | static struct cmd_list_element *set_dwarf2_cmdlist; |
17460 | static struct cmd_list_element *show_dwarf2_cmdlist; | |
17461 | ||
17462 | static void | |
17463 | set_dwarf2_cmd (char *args, int from_tty) | |
17464 | { | |
17465 | help_list (set_dwarf2_cmdlist, "maintenance set dwarf2 ", -1, gdb_stdout); | |
17466 | } | |
17467 | ||
17468 | static void | |
17469 | show_dwarf2_cmd (char *args, int from_tty) | |
6e70227d | 17470 | { |
ae038cb0 DJ |
17471 | cmd_show_list (show_dwarf2_cmdlist, from_tty, ""); |
17472 | } | |
17473 | ||
dce234bc PP |
17474 | /* If section described by INFO was mmapped, munmap it now. */ |
17475 | ||
17476 | static void | |
17477 | munmap_section_buffer (struct dwarf2_section_info *info) | |
17478 | { | |
b315ab21 | 17479 | if (info->map_addr != NULL) |
dce234bc PP |
17480 | { |
17481 | #ifdef HAVE_MMAP | |
b315ab21 | 17482 | int res; |
9a619af0 | 17483 | |
b315ab21 TG |
17484 | res = munmap (info->map_addr, info->map_len); |
17485 | gdb_assert (res == 0); | |
dce234bc PP |
17486 | #else |
17487 | /* Without HAVE_MMAP, we should never be here to begin with. */ | |
f3574227 | 17488 | gdb_assert_not_reached ("no mmap support"); |
dce234bc PP |
17489 | #endif |
17490 | } | |
17491 | } | |
17492 | ||
17493 | /* munmap debug sections for OBJFILE, if necessary. */ | |
17494 | ||
17495 | static void | |
c1bd65d0 | 17496 | dwarf2_per_objfile_free (struct objfile *objfile, void *d) |
dce234bc PP |
17497 | { |
17498 | struct dwarf2_per_objfile *data = d; | |
8b70b953 TT |
17499 | int ix; |
17500 | struct dwarf2_section_info *section; | |
9a619af0 | 17501 | |
16be1145 DE |
17502 | /* This is sorted according to the order they're defined in to make it easier |
17503 | to keep in sync. */ | |
dce234bc PP |
17504 | munmap_section_buffer (&data->info); |
17505 | munmap_section_buffer (&data->abbrev); | |
17506 | munmap_section_buffer (&data->line); | |
16be1145 | 17507 | munmap_section_buffer (&data->loc); |
dce234bc | 17508 | munmap_section_buffer (&data->macinfo); |
cf2c3c16 | 17509 | munmap_section_buffer (&data->macro); |
16be1145 | 17510 | munmap_section_buffer (&data->str); |
dce234bc | 17511 | munmap_section_buffer (&data->ranges); |
3019eac3 | 17512 | munmap_section_buffer (&data->addr); |
dce234bc PP |
17513 | munmap_section_buffer (&data->frame); |
17514 | munmap_section_buffer (&data->eh_frame); | |
9291a0cd | 17515 | munmap_section_buffer (&data->gdb_index); |
8b70b953 TT |
17516 | |
17517 | for (ix = 0; | |
17518 | VEC_iterate (dwarf2_section_info_def, data->types, ix, section); | |
17519 | ++ix) | |
17520 | munmap_section_buffer (section); | |
17521 | ||
95554aad TT |
17522 | for (ix = 0; ix < dwarf2_per_objfile->n_comp_units; ++ix) |
17523 | VEC_free (dwarf2_per_cu_ptr, | |
17524 | dwarf2_per_objfile->all_comp_units[ix]->imported_symtabs); | |
17525 | ||
8b70b953 | 17526 | VEC_free (dwarf2_section_info_def, data->types); |
3019eac3 DE |
17527 | |
17528 | if (data->dwo_files) | |
17529 | free_dwo_files (data->dwo_files, objfile); | |
9291a0cd TT |
17530 | } |
17531 | ||
17532 | \f | |
ae2de4f8 | 17533 | /* The "save gdb-index" command. */ |
9291a0cd TT |
17534 | |
17535 | /* The contents of the hash table we create when building the string | |
17536 | table. */ | |
17537 | struct strtab_entry | |
17538 | { | |
17539 | offset_type offset; | |
17540 | const char *str; | |
17541 | }; | |
17542 | ||
559a7a62 JK |
17543 | /* Hash function for a strtab_entry. |
17544 | ||
17545 | Function is used only during write_hash_table so no index format backward | |
17546 | compatibility is needed. */ | |
b89be57b | 17547 | |
9291a0cd TT |
17548 | static hashval_t |
17549 | hash_strtab_entry (const void *e) | |
17550 | { | |
17551 | const struct strtab_entry *entry = e; | |
559a7a62 | 17552 | return mapped_index_string_hash (INT_MAX, entry->str); |
9291a0cd TT |
17553 | } |
17554 | ||
17555 | /* Equality function for a strtab_entry. */ | |
b89be57b | 17556 | |
9291a0cd TT |
17557 | static int |
17558 | eq_strtab_entry (const void *a, const void *b) | |
17559 | { | |
17560 | const struct strtab_entry *ea = a; | |
17561 | const struct strtab_entry *eb = b; | |
17562 | return !strcmp (ea->str, eb->str); | |
17563 | } | |
17564 | ||
17565 | /* Create a strtab_entry hash table. */ | |
b89be57b | 17566 | |
9291a0cd TT |
17567 | static htab_t |
17568 | create_strtab (void) | |
17569 | { | |
17570 | return htab_create_alloc (100, hash_strtab_entry, eq_strtab_entry, | |
17571 | xfree, xcalloc, xfree); | |
17572 | } | |
17573 | ||
17574 | /* Add a string to the constant pool. Return the string's offset in | |
17575 | host order. */ | |
b89be57b | 17576 | |
9291a0cd TT |
17577 | static offset_type |
17578 | add_string (htab_t table, struct obstack *cpool, const char *str) | |
17579 | { | |
17580 | void **slot; | |
17581 | struct strtab_entry entry; | |
17582 | struct strtab_entry *result; | |
17583 | ||
17584 | entry.str = str; | |
17585 | slot = htab_find_slot (table, &entry, INSERT); | |
17586 | if (*slot) | |
17587 | result = *slot; | |
17588 | else | |
17589 | { | |
17590 | result = XNEW (struct strtab_entry); | |
17591 | result->offset = obstack_object_size (cpool); | |
17592 | result->str = str; | |
17593 | obstack_grow_str0 (cpool, str); | |
17594 | *slot = result; | |
17595 | } | |
17596 | return result->offset; | |
17597 | } | |
17598 | ||
17599 | /* An entry in the symbol table. */ | |
17600 | struct symtab_index_entry | |
17601 | { | |
17602 | /* The name of the symbol. */ | |
17603 | const char *name; | |
17604 | /* The offset of the name in the constant pool. */ | |
17605 | offset_type index_offset; | |
17606 | /* A sorted vector of the indices of all the CUs that hold an object | |
17607 | of this name. */ | |
17608 | VEC (offset_type) *cu_indices; | |
17609 | }; | |
17610 | ||
17611 | /* The symbol table. This is a power-of-2-sized hash table. */ | |
17612 | struct mapped_symtab | |
17613 | { | |
17614 | offset_type n_elements; | |
17615 | offset_type size; | |
17616 | struct symtab_index_entry **data; | |
17617 | }; | |
17618 | ||
17619 | /* Hash function for a symtab_index_entry. */ | |
b89be57b | 17620 | |
9291a0cd TT |
17621 | static hashval_t |
17622 | hash_symtab_entry (const void *e) | |
17623 | { | |
17624 | const struct symtab_index_entry *entry = e; | |
17625 | return iterative_hash (VEC_address (offset_type, entry->cu_indices), | |
17626 | sizeof (offset_type) * VEC_length (offset_type, | |
17627 | entry->cu_indices), | |
17628 | 0); | |
17629 | } | |
17630 | ||
17631 | /* Equality function for a symtab_index_entry. */ | |
b89be57b | 17632 | |
9291a0cd TT |
17633 | static int |
17634 | eq_symtab_entry (const void *a, const void *b) | |
17635 | { | |
17636 | const struct symtab_index_entry *ea = a; | |
17637 | const struct symtab_index_entry *eb = b; | |
17638 | int len = VEC_length (offset_type, ea->cu_indices); | |
17639 | if (len != VEC_length (offset_type, eb->cu_indices)) | |
17640 | return 0; | |
17641 | return !memcmp (VEC_address (offset_type, ea->cu_indices), | |
17642 | VEC_address (offset_type, eb->cu_indices), | |
17643 | sizeof (offset_type) * len); | |
17644 | } | |
17645 | ||
17646 | /* Destroy a symtab_index_entry. */ | |
b89be57b | 17647 | |
9291a0cd TT |
17648 | static void |
17649 | delete_symtab_entry (void *p) | |
17650 | { | |
17651 | struct symtab_index_entry *entry = p; | |
17652 | VEC_free (offset_type, entry->cu_indices); | |
17653 | xfree (entry); | |
17654 | } | |
17655 | ||
17656 | /* Create a hash table holding symtab_index_entry objects. */ | |
b89be57b | 17657 | |
9291a0cd | 17658 | static htab_t |
3876f04e | 17659 | create_symbol_hash_table (void) |
9291a0cd TT |
17660 | { |
17661 | return htab_create_alloc (100, hash_symtab_entry, eq_symtab_entry, | |
17662 | delete_symtab_entry, xcalloc, xfree); | |
17663 | } | |
17664 | ||
17665 | /* Create a new mapped symtab object. */ | |
b89be57b | 17666 | |
9291a0cd TT |
17667 | static struct mapped_symtab * |
17668 | create_mapped_symtab (void) | |
17669 | { | |
17670 | struct mapped_symtab *symtab = XNEW (struct mapped_symtab); | |
17671 | symtab->n_elements = 0; | |
17672 | symtab->size = 1024; | |
17673 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
17674 | return symtab; | |
17675 | } | |
17676 | ||
17677 | /* Destroy a mapped_symtab. */ | |
b89be57b | 17678 | |
9291a0cd TT |
17679 | static void |
17680 | cleanup_mapped_symtab (void *p) | |
17681 | { | |
17682 | struct mapped_symtab *symtab = p; | |
17683 | /* The contents of the array are freed when the other hash table is | |
17684 | destroyed. */ | |
17685 | xfree (symtab->data); | |
17686 | xfree (symtab); | |
17687 | } | |
17688 | ||
17689 | /* Find a slot in SYMTAB for the symbol NAME. Returns a pointer to | |
559a7a62 JK |
17690 | the slot. |
17691 | ||
17692 | Function is used only during write_hash_table so no index format backward | |
17693 | compatibility is needed. */ | |
b89be57b | 17694 | |
9291a0cd TT |
17695 | static struct symtab_index_entry ** |
17696 | find_slot (struct mapped_symtab *symtab, const char *name) | |
17697 | { | |
559a7a62 | 17698 | offset_type index, step, hash = mapped_index_string_hash (INT_MAX, name); |
9291a0cd TT |
17699 | |
17700 | index = hash & (symtab->size - 1); | |
17701 | step = ((hash * 17) & (symtab->size - 1)) | 1; | |
17702 | ||
17703 | for (;;) | |
17704 | { | |
17705 | if (!symtab->data[index] || !strcmp (name, symtab->data[index]->name)) | |
17706 | return &symtab->data[index]; | |
17707 | index = (index + step) & (symtab->size - 1); | |
17708 | } | |
17709 | } | |
17710 | ||
17711 | /* Expand SYMTAB's hash table. */ | |
b89be57b | 17712 | |
9291a0cd TT |
17713 | static void |
17714 | hash_expand (struct mapped_symtab *symtab) | |
17715 | { | |
17716 | offset_type old_size = symtab->size; | |
17717 | offset_type i; | |
17718 | struct symtab_index_entry **old_entries = symtab->data; | |
17719 | ||
17720 | symtab->size *= 2; | |
17721 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
17722 | ||
17723 | for (i = 0; i < old_size; ++i) | |
17724 | { | |
17725 | if (old_entries[i]) | |
17726 | { | |
17727 | struct symtab_index_entry **slot = find_slot (symtab, | |
17728 | old_entries[i]->name); | |
17729 | *slot = old_entries[i]; | |
17730 | } | |
17731 | } | |
17732 | ||
17733 | xfree (old_entries); | |
17734 | } | |
17735 | ||
156942c7 DE |
17736 | /* Add an entry to SYMTAB. NAME is the name of the symbol. |
17737 | CU_INDEX is the index of the CU in which the symbol appears. | |
17738 | IS_STATIC is one if the symbol is static, otherwise zero (global). */ | |
b89be57b | 17739 | |
9291a0cd TT |
17740 | static void |
17741 | add_index_entry (struct mapped_symtab *symtab, const char *name, | |
156942c7 | 17742 | int is_static, gdb_index_symbol_kind kind, |
9291a0cd TT |
17743 | offset_type cu_index) |
17744 | { | |
17745 | struct symtab_index_entry **slot; | |
156942c7 | 17746 | offset_type cu_index_and_attrs; |
9291a0cd TT |
17747 | |
17748 | ++symtab->n_elements; | |
17749 | if (4 * symtab->n_elements / 3 >= symtab->size) | |
17750 | hash_expand (symtab); | |
17751 | ||
17752 | slot = find_slot (symtab, name); | |
17753 | if (!*slot) | |
17754 | { | |
17755 | *slot = XNEW (struct symtab_index_entry); | |
17756 | (*slot)->name = name; | |
156942c7 | 17757 | /* index_offset is set later. */ |
9291a0cd TT |
17758 | (*slot)->cu_indices = NULL; |
17759 | } | |
156942c7 DE |
17760 | |
17761 | cu_index_and_attrs = 0; | |
17762 | DW2_GDB_INDEX_CU_SET_VALUE (cu_index_and_attrs, cu_index); | |
17763 | DW2_GDB_INDEX_SYMBOL_STATIC_SET_VALUE (cu_index_and_attrs, is_static); | |
17764 | DW2_GDB_INDEX_SYMBOL_KIND_SET_VALUE (cu_index_and_attrs, kind); | |
17765 | ||
17766 | /* We don't want to record an index value twice as we want to avoid the | |
17767 | duplication. | |
17768 | We process all global symbols and then all static symbols | |
17769 | (which would allow us to avoid the duplication by only having to check | |
17770 | the last entry pushed), but a symbol could have multiple kinds in one CU. | |
17771 | To keep things simple we don't worry about the duplication here and | |
17772 | sort and uniqufy the list after we've processed all symbols. */ | |
17773 | VEC_safe_push (offset_type, (*slot)->cu_indices, cu_index_and_attrs); | |
17774 | } | |
17775 | ||
17776 | /* qsort helper routine for uniquify_cu_indices. */ | |
17777 | ||
17778 | static int | |
17779 | offset_type_compare (const void *ap, const void *bp) | |
17780 | { | |
17781 | offset_type a = *(offset_type *) ap; | |
17782 | offset_type b = *(offset_type *) bp; | |
17783 | ||
17784 | return (a > b) - (b > a); | |
17785 | } | |
17786 | ||
17787 | /* Sort and remove duplicates of all symbols' cu_indices lists. */ | |
17788 | ||
17789 | static void | |
17790 | uniquify_cu_indices (struct mapped_symtab *symtab) | |
17791 | { | |
17792 | int i; | |
17793 | ||
17794 | for (i = 0; i < symtab->size; ++i) | |
17795 | { | |
17796 | struct symtab_index_entry *entry = symtab->data[i]; | |
17797 | ||
17798 | if (entry | |
17799 | && entry->cu_indices != NULL) | |
17800 | { | |
17801 | unsigned int next_to_insert, next_to_check; | |
17802 | offset_type last_value; | |
17803 | ||
17804 | qsort (VEC_address (offset_type, entry->cu_indices), | |
17805 | VEC_length (offset_type, entry->cu_indices), | |
17806 | sizeof (offset_type), offset_type_compare); | |
17807 | ||
17808 | last_value = VEC_index (offset_type, entry->cu_indices, 0); | |
17809 | next_to_insert = 1; | |
17810 | for (next_to_check = 1; | |
17811 | next_to_check < VEC_length (offset_type, entry->cu_indices); | |
17812 | ++next_to_check) | |
17813 | { | |
17814 | if (VEC_index (offset_type, entry->cu_indices, next_to_check) | |
17815 | != last_value) | |
17816 | { | |
17817 | last_value = VEC_index (offset_type, entry->cu_indices, | |
17818 | next_to_check); | |
17819 | VEC_replace (offset_type, entry->cu_indices, next_to_insert, | |
17820 | last_value); | |
17821 | ++next_to_insert; | |
17822 | } | |
17823 | } | |
17824 | VEC_truncate (offset_type, entry->cu_indices, next_to_insert); | |
17825 | } | |
17826 | } | |
9291a0cd TT |
17827 | } |
17828 | ||
17829 | /* Add a vector of indices to the constant pool. */ | |
b89be57b | 17830 | |
9291a0cd | 17831 | static offset_type |
3876f04e | 17832 | add_indices_to_cpool (htab_t symbol_hash_table, struct obstack *cpool, |
9291a0cd TT |
17833 | struct symtab_index_entry *entry) |
17834 | { | |
17835 | void **slot; | |
17836 | ||
3876f04e | 17837 | slot = htab_find_slot (symbol_hash_table, entry, INSERT); |
9291a0cd TT |
17838 | if (!*slot) |
17839 | { | |
17840 | offset_type len = VEC_length (offset_type, entry->cu_indices); | |
17841 | offset_type val = MAYBE_SWAP (len); | |
17842 | offset_type iter; | |
17843 | int i; | |
17844 | ||
17845 | *slot = entry; | |
17846 | entry->index_offset = obstack_object_size (cpool); | |
17847 | ||
17848 | obstack_grow (cpool, &val, sizeof (val)); | |
17849 | for (i = 0; | |
17850 | VEC_iterate (offset_type, entry->cu_indices, i, iter); | |
17851 | ++i) | |
17852 | { | |
17853 | val = MAYBE_SWAP (iter); | |
17854 | obstack_grow (cpool, &val, sizeof (val)); | |
17855 | } | |
17856 | } | |
17857 | else | |
17858 | { | |
17859 | struct symtab_index_entry *old_entry = *slot; | |
17860 | entry->index_offset = old_entry->index_offset; | |
17861 | entry = old_entry; | |
17862 | } | |
17863 | return entry->index_offset; | |
17864 | } | |
17865 | ||
17866 | /* Write the mapped hash table SYMTAB to the obstack OUTPUT, with | |
17867 | constant pool entries going into the obstack CPOOL. */ | |
b89be57b | 17868 | |
9291a0cd TT |
17869 | static void |
17870 | write_hash_table (struct mapped_symtab *symtab, | |
17871 | struct obstack *output, struct obstack *cpool) | |
17872 | { | |
17873 | offset_type i; | |
3876f04e | 17874 | htab_t symbol_hash_table; |
9291a0cd TT |
17875 | htab_t str_table; |
17876 | ||
3876f04e | 17877 | symbol_hash_table = create_symbol_hash_table (); |
9291a0cd | 17878 | str_table = create_strtab (); |
3876f04e | 17879 | |
9291a0cd TT |
17880 | /* We add all the index vectors to the constant pool first, to |
17881 | ensure alignment is ok. */ | |
17882 | for (i = 0; i < symtab->size; ++i) | |
17883 | { | |
17884 | if (symtab->data[i]) | |
3876f04e | 17885 | add_indices_to_cpool (symbol_hash_table, cpool, symtab->data[i]); |
9291a0cd TT |
17886 | } |
17887 | ||
17888 | /* Now write out the hash table. */ | |
17889 | for (i = 0; i < symtab->size; ++i) | |
17890 | { | |
17891 | offset_type str_off, vec_off; | |
17892 | ||
17893 | if (symtab->data[i]) | |
17894 | { | |
17895 | str_off = add_string (str_table, cpool, symtab->data[i]->name); | |
17896 | vec_off = symtab->data[i]->index_offset; | |
17897 | } | |
17898 | else | |
17899 | { | |
17900 | /* While 0 is a valid constant pool index, it is not valid | |
17901 | to have 0 for both offsets. */ | |
17902 | str_off = 0; | |
17903 | vec_off = 0; | |
17904 | } | |
17905 | ||
17906 | str_off = MAYBE_SWAP (str_off); | |
17907 | vec_off = MAYBE_SWAP (vec_off); | |
17908 | ||
17909 | obstack_grow (output, &str_off, sizeof (str_off)); | |
17910 | obstack_grow (output, &vec_off, sizeof (vec_off)); | |
17911 | } | |
17912 | ||
17913 | htab_delete (str_table); | |
3876f04e | 17914 | htab_delete (symbol_hash_table); |
9291a0cd TT |
17915 | } |
17916 | ||
0a5429f6 DE |
17917 | /* Struct to map psymtab to CU index in the index file. */ |
17918 | struct psymtab_cu_index_map | |
17919 | { | |
17920 | struct partial_symtab *psymtab; | |
17921 | unsigned int cu_index; | |
17922 | }; | |
17923 | ||
17924 | static hashval_t | |
17925 | hash_psymtab_cu_index (const void *item) | |
17926 | { | |
17927 | const struct psymtab_cu_index_map *map = item; | |
17928 | ||
17929 | return htab_hash_pointer (map->psymtab); | |
17930 | } | |
17931 | ||
17932 | static int | |
17933 | eq_psymtab_cu_index (const void *item_lhs, const void *item_rhs) | |
17934 | { | |
17935 | const struct psymtab_cu_index_map *lhs = item_lhs; | |
17936 | const struct psymtab_cu_index_map *rhs = item_rhs; | |
17937 | ||
17938 | return lhs->psymtab == rhs->psymtab; | |
17939 | } | |
17940 | ||
17941 | /* Helper struct for building the address table. */ | |
17942 | struct addrmap_index_data | |
17943 | { | |
17944 | struct objfile *objfile; | |
17945 | struct obstack *addr_obstack; | |
17946 | htab_t cu_index_htab; | |
17947 | ||
17948 | /* Non-zero if the previous_* fields are valid. | |
17949 | We can't write an entry until we see the next entry (since it is only then | |
17950 | that we know the end of the entry). */ | |
17951 | int previous_valid; | |
17952 | /* Index of the CU in the table of all CUs in the index file. */ | |
17953 | unsigned int previous_cu_index; | |
0963b4bd | 17954 | /* Start address of the CU. */ |
0a5429f6 DE |
17955 | CORE_ADDR previous_cu_start; |
17956 | }; | |
17957 | ||
17958 | /* Write an address entry to OBSTACK. */ | |
b89be57b | 17959 | |
9291a0cd | 17960 | static void |
0a5429f6 DE |
17961 | add_address_entry (struct objfile *objfile, struct obstack *obstack, |
17962 | CORE_ADDR start, CORE_ADDR end, unsigned int cu_index) | |
9291a0cd | 17963 | { |
0a5429f6 | 17964 | offset_type cu_index_to_write; |
9291a0cd TT |
17965 | char addr[8]; |
17966 | CORE_ADDR baseaddr; | |
17967 | ||
17968 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
17969 | ||
0a5429f6 DE |
17970 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, start - baseaddr); |
17971 | obstack_grow (obstack, addr, 8); | |
17972 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, end - baseaddr); | |
17973 | obstack_grow (obstack, addr, 8); | |
17974 | cu_index_to_write = MAYBE_SWAP (cu_index); | |
17975 | obstack_grow (obstack, &cu_index_to_write, sizeof (offset_type)); | |
17976 | } | |
17977 | ||
17978 | /* Worker function for traversing an addrmap to build the address table. */ | |
17979 | ||
17980 | static int | |
17981 | add_address_entry_worker (void *datap, CORE_ADDR start_addr, void *obj) | |
17982 | { | |
17983 | struct addrmap_index_data *data = datap; | |
17984 | struct partial_symtab *pst = obj; | |
0a5429f6 DE |
17985 | |
17986 | if (data->previous_valid) | |
17987 | add_address_entry (data->objfile, data->addr_obstack, | |
17988 | data->previous_cu_start, start_addr, | |
17989 | data->previous_cu_index); | |
17990 | ||
17991 | data->previous_cu_start = start_addr; | |
17992 | if (pst != NULL) | |
17993 | { | |
17994 | struct psymtab_cu_index_map find_map, *map; | |
17995 | find_map.psymtab = pst; | |
17996 | map = htab_find (data->cu_index_htab, &find_map); | |
17997 | gdb_assert (map != NULL); | |
17998 | data->previous_cu_index = map->cu_index; | |
17999 | data->previous_valid = 1; | |
18000 | } | |
18001 | else | |
18002 | data->previous_valid = 0; | |
18003 | ||
18004 | return 0; | |
18005 | } | |
18006 | ||
18007 | /* Write OBJFILE's address map to OBSTACK. | |
18008 | CU_INDEX_HTAB is used to map addrmap entries to their CU indices | |
18009 | in the index file. */ | |
18010 | ||
18011 | static void | |
18012 | write_address_map (struct objfile *objfile, struct obstack *obstack, | |
18013 | htab_t cu_index_htab) | |
18014 | { | |
18015 | struct addrmap_index_data addrmap_index_data; | |
18016 | ||
18017 | /* When writing the address table, we have to cope with the fact that | |
18018 | the addrmap iterator only provides the start of a region; we have to | |
18019 | wait until the next invocation to get the start of the next region. */ | |
18020 | ||
18021 | addrmap_index_data.objfile = objfile; | |
18022 | addrmap_index_data.addr_obstack = obstack; | |
18023 | addrmap_index_data.cu_index_htab = cu_index_htab; | |
18024 | addrmap_index_data.previous_valid = 0; | |
18025 | ||
18026 | addrmap_foreach (objfile->psymtabs_addrmap, add_address_entry_worker, | |
18027 | &addrmap_index_data); | |
18028 | ||
18029 | /* It's highly unlikely the last entry (end address = 0xff...ff) | |
18030 | is valid, but we should still handle it. | |
18031 | The end address is recorded as the start of the next region, but that | |
18032 | doesn't work here. To cope we pass 0xff...ff, this is a rare situation | |
18033 | anyway. */ | |
18034 | if (addrmap_index_data.previous_valid) | |
18035 | add_address_entry (objfile, obstack, | |
18036 | addrmap_index_data.previous_cu_start, (CORE_ADDR) -1, | |
18037 | addrmap_index_data.previous_cu_index); | |
9291a0cd TT |
18038 | } |
18039 | ||
156942c7 DE |
18040 | /* Return the symbol kind of PSYM. */ |
18041 | ||
18042 | static gdb_index_symbol_kind | |
18043 | symbol_kind (struct partial_symbol *psym) | |
18044 | { | |
18045 | domain_enum domain = PSYMBOL_DOMAIN (psym); | |
18046 | enum address_class aclass = PSYMBOL_CLASS (psym); | |
18047 | ||
18048 | switch (domain) | |
18049 | { | |
18050 | case VAR_DOMAIN: | |
18051 | switch (aclass) | |
18052 | { | |
18053 | case LOC_BLOCK: | |
18054 | return GDB_INDEX_SYMBOL_KIND_FUNCTION; | |
18055 | case LOC_TYPEDEF: | |
18056 | return GDB_INDEX_SYMBOL_KIND_TYPE; | |
18057 | case LOC_COMPUTED: | |
18058 | case LOC_CONST_BYTES: | |
18059 | case LOC_OPTIMIZED_OUT: | |
18060 | case LOC_STATIC: | |
18061 | return GDB_INDEX_SYMBOL_KIND_VARIABLE; | |
18062 | case LOC_CONST: | |
18063 | /* Note: It's currently impossible to recognize psyms as enum values | |
18064 | short of reading the type info. For now punt. */ | |
18065 | return GDB_INDEX_SYMBOL_KIND_VARIABLE; | |
18066 | default: | |
18067 | /* There are other LOC_FOO values that one might want to classify | |
18068 | as variables, but dwarf2read.c doesn't currently use them. */ | |
18069 | return GDB_INDEX_SYMBOL_KIND_OTHER; | |
18070 | } | |
18071 | case STRUCT_DOMAIN: | |
18072 | return GDB_INDEX_SYMBOL_KIND_TYPE; | |
18073 | default: | |
18074 | return GDB_INDEX_SYMBOL_KIND_OTHER; | |
18075 | } | |
18076 | } | |
18077 | ||
9291a0cd | 18078 | /* Add a list of partial symbols to SYMTAB. */ |
b89be57b | 18079 | |
9291a0cd TT |
18080 | static void |
18081 | write_psymbols (struct mapped_symtab *symtab, | |
987d643c | 18082 | htab_t psyms_seen, |
9291a0cd TT |
18083 | struct partial_symbol **psymp, |
18084 | int count, | |
987d643c TT |
18085 | offset_type cu_index, |
18086 | int is_static) | |
9291a0cd TT |
18087 | { |
18088 | for (; count-- > 0; ++psymp) | |
18089 | { | |
156942c7 DE |
18090 | struct partial_symbol *psym = *psymp; |
18091 | void **slot; | |
987d643c | 18092 | |
156942c7 | 18093 | if (SYMBOL_LANGUAGE (psym) == language_ada) |
9291a0cd | 18094 | error (_("Ada is not currently supported by the index")); |
987d643c | 18095 | |
987d643c | 18096 | /* Only add a given psymbol once. */ |
156942c7 | 18097 | slot = htab_find_slot (psyms_seen, psym, INSERT); |
987d643c TT |
18098 | if (!*slot) |
18099 | { | |
156942c7 DE |
18100 | gdb_index_symbol_kind kind = symbol_kind (psym); |
18101 | ||
18102 | *slot = psym; | |
18103 | add_index_entry (symtab, SYMBOL_SEARCH_NAME (psym), | |
18104 | is_static, kind, cu_index); | |
987d643c | 18105 | } |
9291a0cd TT |
18106 | } |
18107 | } | |
18108 | ||
18109 | /* Write the contents of an ("unfinished") obstack to FILE. Throw an | |
18110 | exception if there is an error. */ | |
b89be57b | 18111 | |
9291a0cd TT |
18112 | static void |
18113 | write_obstack (FILE *file, struct obstack *obstack) | |
18114 | { | |
18115 | if (fwrite (obstack_base (obstack), 1, obstack_object_size (obstack), | |
18116 | file) | |
18117 | != obstack_object_size (obstack)) | |
18118 | error (_("couldn't data write to file")); | |
18119 | } | |
18120 | ||
18121 | /* Unlink a file if the argument is not NULL. */ | |
b89be57b | 18122 | |
9291a0cd TT |
18123 | static void |
18124 | unlink_if_set (void *p) | |
18125 | { | |
18126 | char **filename = p; | |
18127 | if (*filename) | |
18128 | unlink (*filename); | |
18129 | } | |
18130 | ||
1fd400ff TT |
18131 | /* A helper struct used when iterating over debug_types. */ |
18132 | struct signatured_type_index_data | |
18133 | { | |
18134 | struct objfile *objfile; | |
18135 | struct mapped_symtab *symtab; | |
18136 | struct obstack *types_list; | |
987d643c | 18137 | htab_t psyms_seen; |
1fd400ff TT |
18138 | int cu_index; |
18139 | }; | |
18140 | ||
18141 | /* A helper function that writes a single signatured_type to an | |
18142 | obstack. */ | |
b89be57b | 18143 | |
1fd400ff TT |
18144 | static int |
18145 | write_one_signatured_type (void **slot, void *d) | |
18146 | { | |
18147 | struct signatured_type_index_data *info = d; | |
18148 | struct signatured_type *entry = (struct signatured_type *) *slot; | |
e254ef6a DE |
18149 | struct dwarf2_per_cu_data *per_cu = &entry->per_cu; |
18150 | struct partial_symtab *psymtab = per_cu->v.psymtab; | |
1fd400ff TT |
18151 | gdb_byte val[8]; |
18152 | ||
18153 | write_psymbols (info->symtab, | |
987d643c | 18154 | info->psyms_seen, |
3e43a32a MS |
18155 | info->objfile->global_psymbols.list |
18156 | + psymtab->globals_offset, | |
987d643c TT |
18157 | psymtab->n_global_syms, info->cu_index, |
18158 | 0); | |
1fd400ff | 18159 | write_psymbols (info->symtab, |
987d643c | 18160 | info->psyms_seen, |
3e43a32a MS |
18161 | info->objfile->static_psymbols.list |
18162 | + psymtab->statics_offset, | |
987d643c TT |
18163 | psymtab->n_static_syms, info->cu_index, |
18164 | 1); | |
1fd400ff | 18165 | |
b64f50a1 JK |
18166 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
18167 | entry->per_cu.offset.sect_off); | |
1fd400ff | 18168 | obstack_grow (info->types_list, val, 8); |
3019eac3 DE |
18169 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
18170 | entry->type_offset_in_tu.cu_off); | |
1fd400ff TT |
18171 | obstack_grow (info->types_list, val, 8); |
18172 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, entry->signature); | |
18173 | obstack_grow (info->types_list, val, 8); | |
18174 | ||
18175 | ++info->cu_index; | |
18176 | ||
18177 | return 1; | |
18178 | } | |
18179 | ||
95554aad TT |
18180 | /* Recurse into all "included" dependencies and write their symbols as |
18181 | if they appeared in this psymtab. */ | |
18182 | ||
18183 | static void | |
18184 | recursively_write_psymbols (struct objfile *objfile, | |
18185 | struct partial_symtab *psymtab, | |
18186 | struct mapped_symtab *symtab, | |
18187 | htab_t psyms_seen, | |
18188 | offset_type cu_index) | |
18189 | { | |
18190 | int i; | |
18191 | ||
18192 | for (i = 0; i < psymtab->number_of_dependencies; ++i) | |
18193 | if (psymtab->dependencies[i]->user != NULL) | |
18194 | recursively_write_psymbols (objfile, psymtab->dependencies[i], | |
18195 | symtab, psyms_seen, cu_index); | |
18196 | ||
18197 | write_psymbols (symtab, | |
18198 | psyms_seen, | |
18199 | objfile->global_psymbols.list + psymtab->globals_offset, | |
18200 | psymtab->n_global_syms, cu_index, | |
18201 | 0); | |
18202 | write_psymbols (symtab, | |
18203 | psyms_seen, | |
18204 | objfile->static_psymbols.list + psymtab->statics_offset, | |
18205 | psymtab->n_static_syms, cu_index, | |
18206 | 1); | |
18207 | } | |
18208 | ||
9291a0cd | 18209 | /* Create an index file for OBJFILE in the directory DIR. */ |
b89be57b | 18210 | |
9291a0cd TT |
18211 | static void |
18212 | write_psymtabs_to_index (struct objfile *objfile, const char *dir) | |
18213 | { | |
18214 | struct cleanup *cleanup; | |
18215 | char *filename, *cleanup_filename; | |
1fd400ff TT |
18216 | struct obstack contents, addr_obstack, constant_pool, symtab_obstack; |
18217 | struct obstack cu_list, types_cu_list; | |
9291a0cd TT |
18218 | int i; |
18219 | FILE *out_file; | |
18220 | struct mapped_symtab *symtab; | |
18221 | offset_type val, size_of_contents, total_len; | |
18222 | struct stat st; | |
987d643c | 18223 | htab_t psyms_seen; |
0a5429f6 DE |
18224 | htab_t cu_index_htab; |
18225 | struct psymtab_cu_index_map *psymtab_cu_index_map; | |
9291a0cd | 18226 | |
b4f2f049 | 18227 | if (!objfile->psymtabs || !objfile->psymtabs_addrmap) |
9291a0cd | 18228 | return; |
b4f2f049 | 18229 | |
9291a0cd TT |
18230 | if (dwarf2_per_objfile->using_index) |
18231 | error (_("Cannot use an index to create the index")); | |
18232 | ||
8b70b953 TT |
18233 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) > 1) |
18234 | error (_("Cannot make an index when the file has multiple .debug_types sections")); | |
18235 | ||
9291a0cd | 18236 | if (stat (objfile->name, &st) < 0) |
7e17e088 | 18237 | perror_with_name (objfile->name); |
9291a0cd TT |
18238 | |
18239 | filename = concat (dir, SLASH_STRING, lbasename (objfile->name), | |
18240 | INDEX_SUFFIX, (char *) NULL); | |
18241 | cleanup = make_cleanup (xfree, filename); | |
18242 | ||
18243 | out_file = fopen (filename, "wb"); | |
18244 | if (!out_file) | |
18245 | error (_("Can't open `%s' for writing"), filename); | |
18246 | ||
18247 | cleanup_filename = filename; | |
18248 | make_cleanup (unlink_if_set, &cleanup_filename); | |
18249 | ||
18250 | symtab = create_mapped_symtab (); | |
18251 | make_cleanup (cleanup_mapped_symtab, symtab); | |
18252 | ||
18253 | obstack_init (&addr_obstack); | |
18254 | make_cleanup_obstack_free (&addr_obstack); | |
18255 | ||
18256 | obstack_init (&cu_list); | |
18257 | make_cleanup_obstack_free (&cu_list); | |
18258 | ||
1fd400ff TT |
18259 | obstack_init (&types_cu_list); |
18260 | make_cleanup_obstack_free (&types_cu_list); | |
18261 | ||
987d643c TT |
18262 | psyms_seen = htab_create_alloc (100, htab_hash_pointer, htab_eq_pointer, |
18263 | NULL, xcalloc, xfree); | |
96408a79 | 18264 | make_cleanup_htab_delete (psyms_seen); |
987d643c | 18265 | |
0a5429f6 DE |
18266 | /* While we're scanning CU's create a table that maps a psymtab pointer |
18267 | (which is what addrmap records) to its index (which is what is recorded | |
18268 | in the index file). This will later be needed to write the address | |
18269 | table. */ | |
18270 | cu_index_htab = htab_create_alloc (100, | |
18271 | hash_psymtab_cu_index, | |
18272 | eq_psymtab_cu_index, | |
18273 | NULL, xcalloc, xfree); | |
96408a79 | 18274 | make_cleanup_htab_delete (cu_index_htab); |
0a5429f6 DE |
18275 | psymtab_cu_index_map = (struct psymtab_cu_index_map *) |
18276 | xmalloc (sizeof (struct psymtab_cu_index_map) | |
18277 | * dwarf2_per_objfile->n_comp_units); | |
18278 | make_cleanup (xfree, psymtab_cu_index_map); | |
18279 | ||
18280 | /* The CU list is already sorted, so we don't need to do additional | |
1fd400ff TT |
18281 | work here. Also, the debug_types entries do not appear in |
18282 | all_comp_units, but only in their own hash table. */ | |
9291a0cd TT |
18283 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
18284 | { | |
3e43a32a MS |
18285 | struct dwarf2_per_cu_data *per_cu |
18286 | = dwarf2_per_objfile->all_comp_units[i]; | |
e254ef6a | 18287 | struct partial_symtab *psymtab = per_cu->v.psymtab; |
9291a0cd | 18288 | gdb_byte val[8]; |
0a5429f6 DE |
18289 | struct psymtab_cu_index_map *map; |
18290 | void **slot; | |
9291a0cd | 18291 | |
95554aad TT |
18292 | if (psymtab->user == NULL) |
18293 | recursively_write_psymbols (objfile, psymtab, symtab, psyms_seen, i); | |
9291a0cd | 18294 | |
0a5429f6 DE |
18295 | map = &psymtab_cu_index_map[i]; |
18296 | map->psymtab = psymtab; | |
18297 | map->cu_index = i; | |
18298 | slot = htab_find_slot (cu_index_htab, map, INSERT); | |
18299 | gdb_assert (slot != NULL); | |
18300 | gdb_assert (*slot == NULL); | |
18301 | *slot = map; | |
9291a0cd | 18302 | |
b64f50a1 JK |
18303 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
18304 | per_cu->offset.sect_off); | |
9291a0cd | 18305 | obstack_grow (&cu_list, val, 8); |
e254ef6a | 18306 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, per_cu->length); |
9291a0cd TT |
18307 | obstack_grow (&cu_list, val, 8); |
18308 | } | |
18309 | ||
0a5429f6 DE |
18310 | /* Dump the address map. */ |
18311 | write_address_map (objfile, &addr_obstack, cu_index_htab); | |
18312 | ||
1fd400ff TT |
18313 | /* Write out the .debug_type entries, if any. */ |
18314 | if (dwarf2_per_objfile->signatured_types) | |
18315 | { | |
18316 | struct signatured_type_index_data sig_data; | |
18317 | ||
18318 | sig_data.objfile = objfile; | |
18319 | sig_data.symtab = symtab; | |
18320 | sig_data.types_list = &types_cu_list; | |
987d643c | 18321 | sig_data.psyms_seen = psyms_seen; |
1fd400ff TT |
18322 | sig_data.cu_index = dwarf2_per_objfile->n_comp_units; |
18323 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types, | |
18324 | write_one_signatured_type, &sig_data); | |
18325 | } | |
18326 | ||
156942c7 DE |
18327 | /* Now that we've processed all symbols we can shrink their cu_indices |
18328 | lists. */ | |
18329 | uniquify_cu_indices (symtab); | |
18330 | ||
9291a0cd TT |
18331 | obstack_init (&constant_pool); |
18332 | make_cleanup_obstack_free (&constant_pool); | |
18333 | obstack_init (&symtab_obstack); | |
18334 | make_cleanup_obstack_free (&symtab_obstack); | |
18335 | write_hash_table (symtab, &symtab_obstack, &constant_pool); | |
18336 | ||
18337 | obstack_init (&contents); | |
18338 | make_cleanup_obstack_free (&contents); | |
1fd400ff | 18339 | size_of_contents = 6 * sizeof (offset_type); |
9291a0cd TT |
18340 | total_len = size_of_contents; |
18341 | ||
18342 | /* The version number. */ | |
156942c7 | 18343 | val = MAYBE_SWAP (7); |
9291a0cd TT |
18344 | obstack_grow (&contents, &val, sizeof (val)); |
18345 | ||
18346 | /* The offset of the CU list from the start of the file. */ | |
18347 | val = MAYBE_SWAP (total_len); | |
18348 | obstack_grow (&contents, &val, sizeof (val)); | |
18349 | total_len += obstack_object_size (&cu_list); | |
18350 | ||
1fd400ff TT |
18351 | /* The offset of the types CU list from the start of the file. */ |
18352 | val = MAYBE_SWAP (total_len); | |
18353 | obstack_grow (&contents, &val, sizeof (val)); | |
18354 | total_len += obstack_object_size (&types_cu_list); | |
18355 | ||
9291a0cd TT |
18356 | /* The offset of the address table from the start of the file. */ |
18357 | val = MAYBE_SWAP (total_len); | |
18358 | obstack_grow (&contents, &val, sizeof (val)); | |
18359 | total_len += obstack_object_size (&addr_obstack); | |
18360 | ||
18361 | /* The offset of the symbol table from the start of the file. */ | |
18362 | val = MAYBE_SWAP (total_len); | |
18363 | obstack_grow (&contents, &val, sizeof (val)); | |
18364 | total_len += obstack_object_size (&symtab_obstack); | |
18365 | ||
18366 | /* The offset of the constant pool from the start of the file. */ | |
18367 | val = MAYBE_SWAP (total_len); | |
18368 | obstack_grow (&contents, &val, sizeof (val)); | |
18369 | total_len += obstack_object_size (&constant_pool); | |
18370 | ||
18371 | gdb_assert (obstack_object_size (&contents) == size_of_contents); | |
18372 | ||
18373 | write_obstack (out_file, &contents); | |
18374 | write_obstack (out_file, &cu_list); | |
1fd400ff | 18375 | write_obstack (out_file, &types_cu_list); |
9291a0cd TT |
18376 | write_obstack (out_file, &addr_obstack); |
18377 | write_obstack (out_file, &symtab_obstack); | |
18378 | write_obstack (out_file, &constant_pool); | |
18379 | ||
18380 | fclose (out_file); | |
18381 | ||
18382 | /* We want to keep the file, so we set cleanup_filename to NULL | |
18383 | here. See unlink_if_set. */ | |
18384 | cleanup_filename = NULL; | |
18385 | ||
18386 | do_cleanups (cleanup); | |
18387 | } | |
18388 | ||
90476074 TT |
18389 | /* Implementation of the `save gdb-index' command. |
18390 | ||
18391 | Note that the file format used by this command is documented in the | |
18392 | GDB manual. Any changes here must be documented there. */ | |
11570e71 | 18393 | |
9291a0cd TT |
18394 | static void |
18395 | save_gdb_index_command (char *arg, int from_tty) | |
18396 | { | |
18397 | struct objfile *objfile; | |
18398 | ||
18399 | if (!arg || !*arg) | |
96d19272 | 18400 | error (_("usage: save gdb-index DIRECTORY")); |
9291a0cd TT |
18401 | |
18402 | ALL_OBJFILES (objfile) | |
18403 | { | |
18404 | struct stat st; | |
18405 | ||
18406 | /* If the objfile does not correspond to an actual file, skip it. */ | |
18407 | if (stat (objfile->name, &st) < 0) | |
18408 | continue; | |
18409 | ||
18410 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
18411 | if (dwarf2_per_objfile) | |
18412 | { | |
18413 | volatile struct gdb_exception except; | |
18414 | ||
18415 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
18416 | { | |
18417 | write_psymtabs_to_index (objfile, arg); | |
18418 | } | |
18419 | if (except.reason < 0) | |
18420 | exception_fprintf (gdb_stderr, except, | |
18421 | _("Error while writing index for `%s': "), | |
18422 | objfile->name); | |
18423 | } | |
18424 | } | |
dce234bc PP |
18425 | } |
18426 | ||
9291a0cd TT |
18427 | \f |
18428 | ||
9eae7c52 TT |
18429 | int dwarf2_always_disassemble; |
18430 | ||
18431 | static void | |
18432 | show_dwarf2_always_disassemble (struct ui_file *file, int from_tty, | |
18433 | struct cmd_list_element *c, const char *value) | |
18434 | { | |
3e43a32a MS |
18435 | fprintf_filtered (file, |
18436 | _("Whether to always disassemble " | |
18437 | "DWARF expressions is %s.\n"), | |
9eae7c52 TT |
18438 | value); |
18439 | } | |
18440 | ||
900e11f9 JK |
18441 | static void |
18442 | show_check_physname (struct ui_file *file, int from_tty, | |
18443 | struct cmd_list_element *c, const char *value) | |
18444 | { | |
18445 | fprintf_filtered (file, | |
18446 | _("Whether to check \"physname\" is %s.\n"), | |
18447 | value); | |
18448 | } | |
18449 | ||
6502dd73 DJ |
18450 | void _initialize_dwarf2_read (void); |
18451 | ||
18452 | void | |
18453 | _initialize_dwarf2_read (void) | |
18454 | { | |
96d19272 JK |
18455 | struct cmd_list_element *c; |
18456 | ||
dce234bc | 18457 | dwarf2_objfile_data_key |
c1bd65d0 | 18458 | = register_objfile_data_with_cleanup (NULL, dwarf2_per_objfile_free); |
ae038cb0 | 18459 | |
1bedd215 AC |
18460 | add_prefix_cmd ("dwarf2", class_maintenance, set_dwarf2_cmd, _("\ |
18461 | Set DWARF 2 specific variables.\n\ | |
18462 | Configure DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
18463 | &set_dwarf2_cmdlist, "maintenance set dwarf2 ", |
18464 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
18465 | ||
1bedd215 AC |
18466 | add_prefix_cmd ("dwarf2", class_maintenance, show_dwarf2_cmd, _("\ |
18467 | Show DWARF 2 specific variables\n\ | |
18468 | Show DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
18469 | &show_dwarf2_cmdlist, "maintenance show dwarf2 ", |
18470 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
18471 | ||
18472 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, | |
7915a72c AC |
18473 | &dwarf2_max_cache_age, _("\ |
18474 | Set the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
18475 | Show the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
18476 | A higher limit means that cached compilation units will be stored\n\ | |
18477 | in memory longer, and more total memory will be used. Zero disables\n\ | |
18478 | caching, which can slow down startup."), | |
2c5b56ce | 18479 | NULL, |
920d2a44 | 18480 | show_dwarf2_max_cache_age, |
2c5b56ce | 18481 | &set_dwarf2_cmdlist, |
ae038cb0 | 18482 | &show_dwarf2_cmdlist); |
d97bc12b | 18483 | |
9eae7c52 TT |
18484 | add_setshow_boolean_cmd ("always-disassemble", class_obscure, |
18485 | &dwarf2_always_disassemble, _("\ | |
18486 | Set whether `info address' always disassembles DWARF expressions."), _("\ | |
18487 | Show whether `info address' always disassembles DWARF expressions."), _("\ | |
18488 | When enabled, DWARF expressions are always printed in an assembly-like\n\ | |
18489 | syntax. When disabled, expressions will be printed in a more\n\ | |
18490 | conversational style, when possible."), | |
18491 | NULL, | |
18492 | show_dwarf2_always_disassemble, | |
18493 | &set_dwarf2_cmdlist, | |
18494 | &show_dwarf2_cmdlist); | |
18495 | ||
45cfd468 DE |
18496 | add_setshow_boolean_cmd ("dwarf2-read", no_class, &dwarf2_read_debug, _("\ |
18497 | Set debugging of the dwarf2 reader."), _("\ | |
18498 | Show debugging of the dwarf2 reader."), _("\ | |
18499 | When enabled, debugging messages are printed during dwarf2 reading\n\ | |
18500 | and symtab expansion."), | |
18501 | NULL, | |
18502 | NULL, | |
18503 | &setdebuglist, &showdebuglist); | |
18504 | ||
d97bc12b DE |
18505 | add_setshow_zinteger_cmd ("dwarf2-die", no_class, &dwarf2_die_debug, _("\ |
18506 | Set debugging of the dwarf2 DIE reader."), _("\ | |
18507 | Show debugging of the dwarf2 DIE reader."), _("\ | |
18508 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
18509 | The value is the maximum depth to print."), | |
18510 | NULL, | |
18511 | NULL, | |
18512 | &setdebuglist, &showdebuglist); | |
9291a0cd | 18513 | |
900e11f9 JK |
18514 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
18515 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
18516 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
18517 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
18518 | the demangler."), | |
18519 | NULL, show_check_physname, | |
18520 | &setdebuglist, &showdebuglist); | |
18521 | ||
96d19272 | 18522 | c = add_cmd ("gdb-index", class_files, save_gdb_index_command, |
11570e71 | 18523 | _("\ |
fc1a9d6e | 18524 | Save a gdb-index file.\n\ |
11570e71 | 18525 | Usage: save gdb-index DIRECTORY"), |
96d19272 JK |
18526 | &save_cmdlist); |
18527 | set_cmd_completer (c, filename_completer); | |
6502dd73 | 18528 | } |