Commit | Line | Data |
---|---|---|
c906108c | 1 | /* DWARF 2 debugging format support for GDB. |
917c78fc | 2 | |
0b302171 | 3 | Copyright (C) 1994-2012 Free Software Foundation, Inc. |
c906108c SS |
4 | |
5 | Adapted by Gary Funck (gary@intrepid.com), Intrepid Technology, | |
6 | Inc. with support from Florida State University (under contract | |
7 | with the Ada Joint Program Office), and Silicon Graphics, Inc. | |
8 | Initial contribution by Brent Benson, Harris Computer Systems, Inc., | |
9 | based on Fred Fish's (Cygnus Support) implementation of DWARF 1 | |
7ce59000 | 10 | support. |
c906108c | 11 | |
c5aa993b | 12 | This file is part of GDB. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is free software; you can redistribute it and/or modify |
15 | it under the terms of the GNU General Public License as published by | |
a9762ec7 JB |
16 | the Free Software Foundation; either version 3 of the License, or |
17 | (at your option) any later version. | |
c906108c | 18 | |
a9762ec7 JB |
19 | This program is distributed in the hope that it will be useful, |
20 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | GNU General Public License for more details. | |
c906108c | 23 | |
c5aa993b | 24 | You should have received a copy of the GNU General Public License |
a9762ec7 | 25 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c | 26 | |
21b2bd31 DE |
27 | /* FIXME: Various die-reading functions need to be more careful with |
28 | reading off the end of the section. | |
29 | E.g., load_partial_dies, read_partial_die. */ | |
30 | ||
c906108c SS |
31 | #include "defs.h" |
32 | #include "bfd.h" | |
c906108c SS |
33 | #include "symtab.h" |
34 | #include "gdbtypes.h" | |
c906108c | 35 | #include "objfiles.h" |
fa8f86ff | 36 | #include "dwarf2.h" |
c906108c SS |
37 | #include "buildsym.h" |
38 | #include "demangle.h" | |
50f182aa | 39 | #include "gdb-demangle.h" |
c906108c | 40 | #include "expression.h" |
d5166ae1 | 41 | #include "filenames.h" /* for DOSish file names */ |
2e276125 | 42 | #include "macrotab.h" |
c906108c SS |
43 | #include "language.h" |
44 | #include "complaints.h" | |
357e46e7 | 45 | #include "bcache.h" |
4c2df51b DJ |
46 | #include "dwarf2expr.h" |
47 | #include "dwarf2loc.h" | |
9219021c | 48 | #include "cp-support.h" |
72bf9492 | 49 | #include "hashtab.h" |
ae038cb0 DJ |
50 | #include "command.h" |
51 | #include "gdbcmd.h" | |
edb3359d | 52 | #include "block.h" |
ff013f42 | 53 | #include "addrmap.h" |
94af9270 KS |
54 | #include "typeprint.h" |
55 | #include "jv-lang.h" | |
ccefe4c4 | 56 | #include "psympriv.h" |
9291a0cd TT |
57 | #include "exceptions.h" |
58 | #include "gdb_stat.h" | |
96d19272 | 59 | #include "completer.h" |
34eaf542 | 60 | #include "vec.h" |
98bfdba5 | 61 | #include "c-lang.h" |
a766d390 | 62 | #include "go-lang.h" |
98bfdba5 | 63 | #include "valprint.h" |
3019eac3 | 64 | #include "gdbcore.h" /* for gnutarget */ |
60d5a603 | 65 | #include <ctype.h> |
4c2df51b | 66 | |
c906108c SS |
67 | #include <fcntl.h> |
68 | #include "gdb_string.h" | |
4bdf3d34 | 69 | #include "gdb_assert.h" |
c906108c | 70 | #include <sys/types.h> |
233a11ab CS |
71 | #ifdef HAVE_ZLIB_H |
72 | #include <zlib.h> | |
73 | #endif | |
dce234bc PP |
74 | #ifdef HAVE_MMAP |
75 | #include <sys/mman.h> | |
85d9bd0e TT |
76 | #ifndef MAP_FAILED |
77 | #define MAP_FAILED ((void *) -1) | |
78 | #endif | |
dce234bc | 79 | #endif |
d8151005 | 80 | |
34eaf542 TT |
81 | typedef struct symbol *symbolp; |
82 | DEF_VEC_P (symbolp); | |
83 | ||
d97bc12b DE |
84 | /* When non-zero, dump DIEs after they are read in. */ |
85 | static int dwarf2_die_debug = 0; | |
86 | ||
900e11f9 JK |
87 | /* When non-zero, cross-check physname against demangler. */ |
88 | static int check_physname = 0; | |
89 | ||
481860b3 GB |
90 | /* When non-zero, do not reject deprecated .gdb_index sections. */ |
91 | int use_deprecated_index_sections = 0; | |
92 | ||
dce234bc PP |
93 | static int pagesize; |
94 | ||
df8a16a1 DJ |
95 | /* When set, the file that we're processing is known to have debugging |
96 | info for C++ namespaces. GCC 3.3.x did not produce this information, | |
97 | but later versions do. */ | |
98 | ||
99 | static int processing_has_namespace_info; | |
100 | ||
6502dd73 DJ |
101 | static const struct objfile_data *dwarf2_objfile_data_key; |
102 | ||
dce234bc PP |
103 | struct dwarf2_section_info |
104 | { | |
105 | asection *asection; | |
106 | gdb_byte *buffer; | |
107 | bfd_size_type size; | |
b315ab21 TG |
108 | /* Not NULL if the section was actually mmapped. */ |
109 | void *map_addr; | |
110 | /* Page aligned size of mmapped area. */ | |
111 | bfd_size_type map_len; | |
be391dca TT |
112 | /* True if we have tried to read this section. */ |
113 | int readin; | |
dce234bc PP |
114 | }; |
115 | ||
8b70b953 TT |
116 | typedef struct dwarf2_section_info dwarf2_section_info_def; |
117 | DEF_VEC_O (dwarf2_section_info_def); | |
118 | ||
9291a0cd TT |
119 | /* All offsets in the index are of this type. It must be |
120 | architecture-independent. */ | |
121 | typedef uint32_t offset_type; | |
122 | ||
123 | DEF_VEC_I (offset_type); | |
124 | ||
125 | /* A description of the mapped index. The file format is described in | |
126 | a comment by the code that writes the index. */ | |
127 | struct mapped_index | |
128 | { | |
559a7a62 JK |
129 | /* Index data format version. */ |
130 | int version; | |
131 | ||
9291a0cd TT |
132 | /* The total length of the buffer. */ |
133 | off_t total_size; | |
b11b1f88 | 134 | |
9291a0cd TT |
135 | /* A pointer to the address table data. */ |
136 | const gdb_byte *address_table; | |
b11b1f88 | 137 | |
9291a0cd TT |
138 | /* Size of the address table data in bytes. */ |
139 | offset_type address_table_size; | |
b11b1f88 | 140 | |
3876f04e DE |
141 | /* The symbol table, implemented as a hash table. */ |
142 | const offset_type *symbol_table; | |
b11b1f88 | 143 | |
9291a0cd | 144 | /* Size in slots, each slot is 2 offset_types. */ |
3876f04e | 145 | offset_type symbol_table_slots; |
b11b1f88 | 146 | |
9291a0cd TT |
147 | /* A pointer to the constant pool. */ |
148 | const char *constant_pool; | |
149 | }; | |
150 | ||
9cdd5dbd DE |
151 | /* Collection of data recorded per objfile. |
152 | This hangs off of dwarf2_objfile_data_key. */ | |
153 | ||
6502dd73 DJ |
154 | struct dwarf2_per_objfile |
155 | { | |
dce234bc PP |
156 | struct dwarf2_section_info info; |
157 | struct dwarf2_section_info abbrev; | |
158 | struct dwarf2_section_info line; | |
dce234bc PP |
159 | struct dwarf2_section_info loc; |
160 | struct dwarf2_section_info macinfo; | |
cf2c3c16 | 161 | struct dwarf2_section_info macro; |
dce234bc PP |
162 | struct dwarf2_section_info str; |
163 | struct dwarf2_section_info ranges; | |
3019eac3 | 164 | struct dwarf2_section_info addr; |
dce234bc PP |
165 | struct dwarf2_section_info frame; |
166 | struct dwarf2_section_info eh_frame; | |
9291a0cd | 167 | struct dwarf2_section_info gdb_index; |
ae038cb0 | 168 | |
8b70b953 TT |
169 | VEC (dwarf2_section_info_def) *types; |
170 | ||
be391dca TT |
171 | /* Back link. */ |
172 | struct objfile *objfile; | |
173 | ||
d467dd73 | 174 | /* Table of all the compilation units. This is used to locate |
10b3939b | 175 | the target compilation unit of a particular reference. */ |
ae038cb0 DJ |
176 | struct dwarf2_per_cu_data **all_comp_units; |
177 | ||
178 | /* The number of compilation units in ALL_COMP_UNITS. */ | |
179 | int n_comp_units; | |
180 | ||
1fd400ff | 181 | /* The number of .debug_types-related CUs. */ |
d467dd73 | 182 | int n_type_units; |
1fd400ff | 183 | |
d467dd73 DE |
184 | /* The .debug_types-related CUs (TUs). */ |
185 | struct dwarf2_per_cu_data **all_type_units; | |
1fd400ff | 186 | |
ae038cb0 DJ |
187 | /* A chain of compilation units that are currently read in, so that |
188 | they can be freed later. */ | |
189 | struct dwarf2_per_cu_data *read_in_chain; | |
72dca2f5 | 190 | |
348e048f DE |
191 | /* A table mapping .debug_types signatures to its signatured_type entry. |
192 | This is NULL if the .debug_types section hasn't been read in yet. */ | |
193 | htab_t signatured_types; | |
194 | ||
3019eac3 DE |
195 | /* A table mapping DW_AT_dwo_name values to struct dwo_file objects. |
196 | This is NULL if the table hasn't been allocated yet. */ | |
197 | htab_t dwo_files; | |
198 | ||
72dca2f5 FR |
199 | /* A flag indicating wether this objfile has a section loaded at a |
200 | VMA of 0. */ | |
201 | int has_section_at_zero; | |
9291a0cd | 202 | |
ae2de4f8 DE |
203 | /* True if we are using the mapped index, |
204 | or we are faking it for OBJF_READNOW's sake. */ | |
9291a0cd TT |
205 | unsigned char using_index; |
206 | ||
ae2de4f8 | 207 | /* The mapped index, or NULL if .gdb_index is missing or not being used. */ |
9291a0cd | 208 | struct mapped_index *index_table; |
98bfdba5 | 209 | |
7b9f3c50 DE |
210 | /* When using index_table, this keeps track of all quick_file_names entries. |
211 | TUs can share line table entries with CUs or other TUs, and there can be | |
212 | a lot more TUs than unique line tables, so we maintain a separate table | |
213 | of all line table entries to support the sharing. */ | |
214 | htab_t quick_file_names_table; | |
215 | ||
98bfdba5 PA |
216 | /* Set during partial symbol reading, to prevent queueing of full |
217 | symbols. */ | |
218 | int reading_partial_symbols; | |
673bfd45 | 219 | |
dee91e82 | 220 | /* Table mapping type DIEs to their struct type *. |
673bfd45 | 221 | This is NULL if not allocated yet. |
dee91e82 DE |
222 | The mapping is done via (CU/TU signature + DIE offset) -> type. */ |
223 | htab_t die_type_hash; | |
6502dd73 DJ |
224 | }; |
225 | ||
226 | static struct dwarf2_per_objfile *dwarf2_per_objfile; | |
c906108c | 227 | |
251d32d9 | 228 | /* Default names of the debugging sections. */ |
c906108c | 229 | |
233a11ab CS |
230 | /* Note that if the debugging section has been compressed, it might |
231 | have a name like .zdebug_info. */ | |
232 | ||
9cdd5dbd DE |
233 | static const struct dwarf2_debug_sections dwarf2_elf_names = |
234 | { | |
251d32d9 TG |
235 | { ".debug_info", ".zdebug_info" }, |
236 | { ".debug_abbrev", ".zdebug_abbrev" }, | |
237 | { ".debug_line", ".zdebug_line" }, | |
238 | { ".debug_loc", ".zdebug_loc" }, | |
239 | { ".debug_macinfo", ".zdebug_macinfo" }, | |
cf2c3c16 | 240 | { ".debug_macro", ".zdebug_macro" }, |
251d32d9 TG |
241 | { ".debug_str", ".zdebug_str" }, |
242 | { ".debug_ranges", ".zdebug_ranges" }, | |
243 | { ".debug_types", ".zdebug_types" }, | |
3019eac3 | 244 | { ".debug_addr", ".zdebug_addr" }, |
251d32d9 TG |
245 | { ".debug_frame", ".zdebug_frame" }, |
246 | { ".eh_frame", NULL }, | |
24d3216f TT |
247 | { ".gdb_index", ".zgdb_index" }, |
248 | 23 | |
251d32d9 | 249 | }; |
c906108c | 250 | |
3019eac3 DE |
251 | /* List of DWO sections. */ |
252 | ||
253 | static const struct dwo_section_names | |
254 | { | |
255 | struct dwarf2_section_names abbrev_dwo; | |
256 | struct dwarf2_section_names info_dwo; | |
257 | struct dwarf2_section_names line_dwo; | |
258 | struct dwarf2_section_names loc_dwo; | |
259 | struct dwarf2_section_names str_dwo; | |
260 | struct dwarf2_section_names str_offsets_dwo; | |
261 | struct dwarf2_section_names types_dwo; | |
262 | } | |
263 | dwo_section_names = | |
264 | { | |
265 | { ".debug_abbrev.dwo", ".zdebug_abbrev.dwo" }, | |
266 | { ".debug_info.dwo", ".zdebug_info.dwo" }, | |
267 | { ".debug_line.dwo", ".zdebug_line.dwo" }, | |
268 | { ".debug_loc.dwo", ".zdebug_loc.dwo" }, | |
269 | { ".debug_str.dwo", ".zdebug_str.dwo" }, | |
270 | { ".debug_str_offsets.dwo", ".zdebug_str_offsets.dwo" }, | |
271 | { ".debug_types.dwo", ".zdebug_types.dwo" }, | |
272 | }; | |
273 | ||
c906108c SS |
274 | /* local data types */ |
275 | ||
0963b4bd | 276 | /* We hold several abbreviation tables in memory at the same time. */ |
57349743 JB |
277 | #ifndef ABBREV_HASH_SIZE |
278 | #define ABBREV_HASH_SIZE 121 | |
279 | #endif | |
280 | ||
107d2387 AC |
281 | /* The data in a compilation unit header, after target2host |
282 | translation, looks like this. */ | |
c906108c | 283 | struct comp_unit_head |
a738430d | 284 | { |
c764a876 | 285 | unsigned int length; |
a738430d | 286 | short version; |
a738430d MK |
287 | unsigned char addr_size; |
288 | unsigned char signed_addr_p; | |
b64f50a1 | 289 | sect_offset abbrev_offset; |
57349743 | 290 | |
a738430d MK |
291 | /* Size of file offsets; either 4 or 8. */ |
292 | unsigned int offset_size; | |
57349743 | 293 | |
a738430d MK |
294 | /* Size of the length field; either 4 or 12. */ |
295 | unsigned int initial_length_size; | |
57349743 | 296 | |
a738430d MK |
297 | /* Offset to the first byte of this compilation unit header in the |
298 | .debug_info section, for resolving relative reference dies. */ | |
b64f50a1 | 299 | sect_offset offset; |
57349743 | 300 | |
d00adf39 DE |
301 | /* Offset to first die in this cu from the start of the cu. |
302 | This will be the first byte following the compilation unit header. */ | |
b64f50a1 | 303 | cu_offset first_die_offset; |
a738430d | 304 | }; |
c906108c | 305 | |
3da10d80 KS |
306 | /* Type used for delaying computation of method physnames. |
307 | See comments for compute_delayed_physnames. */ | |
308 | struct delayed_method_info | |
309 | { | |
310 | /* The type to which the method is attached, i.e., its parent class. */ | |
311 | struct type *type; | |
312 | ||
313 | /* The index of the method in the type's function fieldlists. */ | |
314 | int fnfield_index; | |
315 | ||
316 | /* The index of the method in the fieldlist. */ | |
317 | int index; | |
318 | ||
319 | /* The name of the DIE. */ | |
320 | const char *name; | |
321 | ||
322 | /* The DIE associated with this method. */ | |
323 | struct die_info *die; | |
324 | }; | |
325 | ||
326 | typedef struct delayed_method_info delayed_method_info; | |
327 | DEF_VEC_O (delayed_method_info); | |
328 | ||
e7c27a73 DJ |
329 | /* Internal state when decoding a particular compilation unit. */ |
330 | struct dwarf2_cu | |
331 | { | |
332 | /* The objfile containing this compilation unit. */ | |
333 | struct objfile *objfile; | |
334 | ||
d00adf39 | 335 | /* The header of the compilation unit. */ |
e7c27a73 | 336 | struct comp_unit_head header; |
e142c38c | 337 | |
d00adf39 DE |
338 | /* Base address of this compilation unit. */ |
339 | CORE_ADDR base_address; | |
340 | ||
341 | /* Non-zero if base_address has been set. */ | |
342 | int base_known; | |
343 | ||
e142c38c DJ |
344 | /* The language we are debugging. */ |
345 | enum language language; | |
346 | const struct language_defn *language_defn; | |
347 | ||
b0f35d58 DL |
348 | const char *producer; |
349 | ||
e142c38c DJ |
350 | /* The generic symbol table building routines have separate lists for |
351 | file scope symbols and all all other scopes (local scopes). So | |
352 | we need to select the right one to pass to add_symbol_to_list(). | |
353 | We do it by keeping a pointer to the correct list in list_in_scope. | |
354 | ||
355 | FIXME: The original dwarf code just treated the file scope as the | |
356 | first local scope, and all other local scopes as nested local | |
357 | scopes, and worked fine. Check to see if we really need to | |
358 | distinguish these in buildsym.c. */ | |
359 | struct pending **list_in_scope; | |
360 | ||
f3dd6933 DJ |
361 | /* DWARF abbreviation table associated with this compilation unit. */ |
362 | struct abbrev_info **dwarf2_abbrevs; | |
363 | ||
364 | /* Storage for the abbrev table. */ | |
365 | struct obstack abbrev_obstack; | |
72bf9492 | 366 | |
b64f50a1 JK |
367 | /* Hash table holding all the loaded partial DIEs |
368 | with partial_die->offset.SECT_OFF as hash. */ | |
72bf9492 DJ |
369 | htab_t partial_dies; |
370 | ||
371 | /* Storage for things with the same lifetime as this read-in compilation | |
372 | unit, including partial DIEs. */ | |
373 | struct obstack comp_unit_obstack; | |
374 | ||
ae038cb0 DJ |
375 | /* When multiple dwarf2_cu structures are living in memory, this field |
376 | chains them all together, so that they can be released efficiently. | |
377 | We will probably also want a generation counter so that most-recently-used | |
378 | compilation units are cached... */ | |
379 | struct dwarf2_per_cu_data *read_in_chain; | |
380 | ||
381 | /* Backchain to our per_cu entry if the tree has been built. */ | |
382 | struct dwarf2_per_cu_data *per_cu; | |
383 | ||
384 | /* How many compilation units ago was this CU last referenced? */ | |
385 | int last_used; | |
386 | ||
b64f50a1 JK |
387 | /* A hash table of DIE cu_offset for following references with |
388 | die_info->offset.sect_off as hash. */ | |
51545339 | 389 | htab_t die_hash; |
10b3939b DJ |
390 | |
391 | /* Full DIEs if read in. */ | |
392 | struct die_info *dies; | |
393 | ||
394 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
395 | units referenced by this one. Only set during full symbol processing; | |
396 | partial symbol tables do not have dependencies. */ | |
397 | htab_t dependencies; | |
398 | ||
cb1df416 DJ |
399 | /* Header data from the line table, during full symbol processing. */ |
400 | struct line_header *line_header; | |
401 | ||
3da10d80 KS |
402 | /* A list of methods which need to have physnames computed |
403 | after all type information has been read. */ | |
404 | VEC (delayed_method_info) *method_list; | |
405 | ||
96408a79 SA |
406 | /* To be copied to symtab->call_site_htab. */ |
407 | htab_t call_site_htab; | |
408 | ||
3019eac3 DE |
409 | /* Non-NULL if this CU came from a DWO file. */ |
410 | struct dwo_unit *dwo_unit; | |
411 | ||
412 | /* The DW_AT_addr_base attribute if present, zero otherwise | |
413 | (zero is a valid value though). | |
414 | Note this value comes from the stub CU/TU's DIE. */ | |
415 | ULONGEST addr_base; | |
416 | ||
ae038cb0 DJ |
417 | /* Mark used when releasing cached dies. */ |
418 | unsigned int mark : 1; | |
419 | ||
8be455d7 JK |
420 | /* This CU references .debug_loc. See the symtab->locations_valid field. |
421 | This test is imperfect as there may exist optimized debug code not using | |
422 | any location list and still facing inlining issues if handled as | |
423 | unoptimized code. For a future better test see GCC PR other/32998. */ | |
8be455d7 | 424 | unsigned int has_loclist : 1; |
ba919b58 TT |
425 | |
426 | /* These cache the results of producer_is_gxx_lt_4_6. | |
427 | CHECKED_PRODUCER is set if PRODUCER_IS_GXX_LT_4_6 is valid. This | |
428 | information is cached because profiling CU expansion showed | |
429 | excessive time spent in producer_is_gxx_lt_4_6. */ | |
430 | unsigned int checked_producer : 1; | |
431 | unsigned int producer_is_gxx_lt_4_6 : 1; | |
3019eac3 DE |
432 | |
433 | /* Non-zero if DW_AT_addr_base was found. | |
434 | Used when processing DWO files. */ | |
435 | unsigned int have_addr_base : 1; | |
e7c27a73 DJ |
436 | }; |
437 | ||
10b3939b DJ |
438 | /* Persistent data held for a compilation unit, even when not |
439 | processing it. We put a pointer to this structure in the | |
28dee7f5 | 440 | read_symtab_private field of the psymtab. */ |
10b3939b | 441 | |
ae038cb0 DJ |
442 | struct dwarf2_per_cu_data |
443 | { | |
348e048f | 444 | /* The start offset and length of this compilation unit. 2**29-1 |
ae038cb0 | 445 | bytes should suffice to store the length of any compilation unit |
45452591 DE |
446 | - if it doesn't, GDB will fall over anyway. |
447 | NOTE: Unlike comp_unit_head.length, this length includes | |
3019eac3 DE |
448 | initial_length_size. |
449 | If the DIE refers to a DWO file, this is always of the original die, | |
450 | not the DWO file. */ | |
b64f50a1 | 451 | sect_offset offset; |
348e048f | 452 | unsigned int length : 29; |
ae038cb0 DJ |
453 | |
454 | /* Flag indicating this compilation unit will be read in before | |
455 | any of the current compilation units are processed. */ | |
c764a876 | 456 | unsigned int queued : 1; |
ae038cb0 | 457 | |
0d99eb77 DE |
458 | /* This flag will be set when reading partial DIEs if we need to load |
459 | absolutely all DIEs for this compilation unit, instead of just the ones | |
460 | we think are interesting. It gets set if we look for a DIE in the | |
5afb4e99 DJ |
461 | hash table and don't find it. */ |
462 | unsigned int load_all_dies : 1; | |
463 | ||
3019eac3 DE |
464 | /* Non-zero if this CU is from .debug_types. */ |
465 | unsigned int is_debug_types : 1; | |
466 | ||
467 | /* The section this CU/TU lives in. | |
468 | If the DIE refers to a DWO file, this is always the original die, | |
469 | not the DWO file. */ | |
470 | struct dwarf2_section_info *info_or_types_section; | |
348e048f | 471 | |
17ea53c3 JK |
472 | /* Set to non-NULL iff this CU is currently loaded. When it gets freed out |
473 | of the CU cache it gets reset to NULL again. */ | |
ae038cb0 | 474 | struct dwarf2_cu *cu; |
1c379e20 | 475 | |
9cdd5dbd DE |
476 | /* The corresponding objfile. |
477 | Normally we can get the objfile from dwarf2_per_objfile. | |
478 | However we can enter this file with just a "per_cu" handle. */ | |
9291a0cd TT |
479 | struct objfile *objfile; |
480 | ||
481 | /* When using partial symbol tables, the 'psymtab' field is active. | |
482 | Otherwise the 'quick' field is active. */ | |
483 | union | |
484 | { | |
485 | /* The partial symbol table associated with this compilation unit, | |
486 | or NULL for partial units (which do not have an associated | |
487 | symtab). */ | |
488 | struct partial_symtab *psymtab; | |
489 | ||
490 | /* Data needed by the "quick" functions. */ | |
491 | struct dwarf2_per_cu_quick_data *quick; | |
492 | } v; | |
ae038cb0 DJ |
493 | }; |
494 | ||
348e048f DE |
495 | /* Entry in the signatured_types hash table. */ |
496 | ||
497 | struct signatured_type | |
498 | { | |
3019eac3 | 499 | /* The type's signature. */ |
348e048f DE |
500 | ULONGEST signature; |
501 | ||
3019eac3 DE |
502 | /* Offset in the TU of the type's DIE, as read from the TU header. |
503 | If the definition lives in a DWO file, this value is unusable. */ | |
504 | cu_offset type_offset_in_tu; | |
505 | ||
506 | /* Offset in the section of the type's DIE. | |
507 | If the definition lives in a DWO file, this is the offset in the | |
508 | .debug_types.dwo section. | |
509 | The value is zero until the actual value is known. | |
510 | Zero is otherwise not a valid section offset. */ | |
511 | sect_offset type_offset_in_section; | |
348e048f DE |
512 | |
513 | /* The CU(/TU) of this type. */ | |
514 | struct dwarf2_per_cu_data per_cu; | |
515 | }; | |
516 | ||
3019eac3 DE |
517 | /* These sections are what may appear in a "dwo" file. */ |
518 | ||
519 | struct dwo_sections | |
520 | { | |
521 | struct dwarf2_section_info abbrev; | |
522 | struct dwarf2_section_info info; | |
523 | struct dwarf2_section_info line; | |
524 | struct dwarf2_section_info loc; | |
525 | struct dwarf2_section_info str; | |
526 | struct dwarf2_section_info str_offsets; | |
527 | VEC (dwarf2_section_info_def) *types; | |
528 | }; | |
529 | ||
530 | /* Common bits of DWO CUs/TUs. */ | |
531 | ||
532 | struct dwo_unit | |
533 | { | |
534 | /* Backlink to the containing struct dwo_file. */ | |
535 | struct dwo_file *dwo_file; | |
536 | ||
537 | /* The "id" that distinguishes this CU/TU. | |
538 | .debug_info calls this "dwo_id", .debug_types calls this "signature". | |
539 | Since signatures came first, we stick with it for consistency. */ | |
540 | ULONGEST signature; | |
541 | ||
542 | /* The section this CU/TU lives in, in the DWO file. */ | |
543 | struct dwarf2_section_info *info_or_types_section; | |
544 | ||
545 | /* Same as dwarf2_per_cu_data:{offset,length} but for the DWO section. */ | |
546 | sect_offset offset; | |
547 | unsigned int length; | |
548 | ||
549 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
550 | cu_offset type_offset_in_tu; | |
551 | }; | |
552 | ||
553 | /* Data for one DWO file. */ | |
554 | ||
555 | struct dwo_file | |
556 | { | |
557 | /* The DW_AT_GNU_dwo_name attribute. | |
558 | We don't manage space for this, it's an attribute. */ | |
559 | const char *dwo_name; | |
560 | ||
561 | /* The bfd, when the file is open. Otherwise this is NULL. */ | |
562 | bfd *dwo_bfd; | |
563 | ||
564 | /* Section info for this file. */ | |
565 | struct dwo_sections sections; | |
566 | ||
567 | /* Table of CUs in the file. | |
568 | Each element is a struct dwo_unit. */ | |
569 | htab_t cus; | |
570 | ||
571 | /* Table of TUs in the file. | |
572 | Each element is a struct dwo_unit. */ | |
573 | htab_t tus; | |
574 | }; | |
575 | ||
0963b4bd MS |
576 | /* Struct used to pass misc. parameters to read_die_and_children, et |
577 | al. which are used for both .debug_info and .debug_types dies. | |
578 | All parameters here are unchanging for the life of the call. This | |
dee91e82 | 579 | struct exists to abstract away the constant parameters of die reading. */ |
93311388 DE |
580 | |
581 | struct die_reader_specs | |
582 | { | |
dee91e82 | 583 | /* die_section->asection->owner. */ |
93311388 DE |
584 | bfd* abfd; |
585 | ||
586 | /* The CU of the DIE we are parsing. */ | |
587 | struct dwarf2_cu *cu; | |
588 | ||
3019eac3 DE |
589 | /* Non-NULL if reading a DWO file. */ |
590 | struct dwo_file *dwo_file; | |
591 | ||
dee91e82 | 592 | /* The section the die comes from. |
3019eac3 | 593 | This is either .debug_info or .debug_types, or the .dwo variants. */ |
dee91e82 DE |
594 | struct dwarf2_section_info *die_section; |
595 | ||
596 | /* die_section->buffer. */ | |
597 | gdb_byte *buffer; | |
93311388 DE |
598 | }; |
599 | ||
fd820528 | 600 | /* Type of function passed to init_cutu_and_read_dies, et.al. */ |
dee91e82 DE |
601 | typedef void (die_reader_func_ftype) (const struct die_reader_specs *reader, |
602 | gdb_byte *info_ptr, | |
603 | struct die_info *comp_unit_die, | |
604 | int has_children, | |
605 | void *data); | |
606 | ||
debd256d JB |
607 | /* The line number information for a compilation unit (found in the |
608 | .debug_line section) begins with a "statement program header", | |
609 | which contains the following information. */ | |
610 | struct line_header | |
611 | { | |
612 | unsigned int total_length; | |
613 | unsigned short version; | |
614 | unsigned int header_length; | |
615 | unsigned char minimum_instruction_length; | |
2dc7f7b3 | 616 | unsigned char maximum_ops_per_instruction; |
debd256d JB |
617 | unsigned char default_is_stmt; |
618 | int line_base; | |
619 | unsigned char line_range; | |
620 | unsigned char opcode_base; | |
621 | ||
622 | /* standard_opcode_lengths[i] is the number of operands for the | |
623 | standard opcode whose value is i. This means that | |
624 | standard_opcode_lengths[0] is unused, and the last meaningful | |
625 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
626 | unsigned char *standard_opcode_lengths; | |
627 | ||
628 | /* The include_directories table. NOTE! These strings are not | |
629 | allocated with xmalloc; instead, they are pointers into | |
630 | debug_line_buffer. If you try to free them, `free' will get | |
631 | indigestion. */ | |
632 | unsigned int num_include_dirs, include_dirs_size; | |
633 | char **include_dirs; | |
634 | ||
635 | /* The file_names table. NOTE! These strings are not allocated | |
636 | with xmalloc; instead, they are pointers into debug_line_buffer. | |
637 | Don't try to free them directly. */ | |
638 | unsigned int num_file_names, file_names_size; | |
639 | struct file_entry | |
c906108c | 640 | { |
debd256d JB |
641 | char *name; |
642 | unsigned int dir_index; | |
643 | unsigned int mod_time; | |
644 | unsigned int length; | |
aaa75496 | 645 | int included_p; /* Non-zero if referenced by the Line Number Program. */ |
cb1df416 | 646 | struct symtab *symtab; /* The associated symbol table, if any. */ |
debd256d JB |
647 | } *file_names; |
648 | ||
649 | /* The start and end of the statement program following this | |
6502dd73 | 650 | header. These point into dwarf2_per_objfile->line_buffer. */ |
fe1b8b76 | 651 | gdb_byte *statement_program_start, *statement_program_end; |
debd256d | 652 | }; |
c906108c SS |
653 | |
654 | /* When we construct a partial symbol table entry we only | |
0963b4bd | 655 | need this much information. */ |
c906108c SS |
656 | struct partial_die_info |
657 | { | |
72bf9492 | 658 | /* Offset of this DIE. */ |
b64f50a1 | 659 | sect_offset offset; |
72bf9492 DJ |
660 | |
661 | /* DWARF-2 tag for this DIE. */ | |
662 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
663 | ||
72bf9492 DJ |
664 | /* Assorted flags describing the data found in this DIE. */ |
665 | unsigned int has_children : 1; | |
666 | unsigned int is_external : 1; | |
667 | unsigned int is_declaration : 1; | |
668 | unsigned int has_type : 1; | |
669 | unsigned int has_specification : 1; | |
670 | unsigned int has_pc_info : 1; | |
481860b3 | 671 | unsigned int may_be_inlined : 1; |
72bf9492 DJ |
672 | |
673 | /* Flag set if the SCOPE field of this structure has been | |
674 | computed. */ | |
675 | unsigned int scope_set : 1; | |
676 | ||
fa4028e9 JB |
677 | /* Flag set if the DIE has a byte_size attribute. */ |
678 | unsigned int has_byte_size : 1; | |
679 | ||
98bfdba5 PA |
680 | /* Flag set if any of the DIE's children are template arguments. */ |
681 | unsigned int has_template_arguments : 1; | |
682 | ||
abc72ce4 DE |
683 | /* Flag set if fixup_partial_die has been called on this die. */ |
684 | unsigned int fixup_called : 1; | |
685 | ||
72bf9492 | 686 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 687 | sometimes a default name for unnamed DIEs. */ |
c906108c | 688 | char *name; |
72bf9492 | 689 | |
abc72ce4 DE |
690 | /* The linkage name, if present. */ |
691 | const char *linkage_name; | |
692 | ||
72bf9492 DJ |
693 | /* The scope to prepend to our children. This is generally |
694 | allocated on the comp_unit_obstack, so will disappear | |
695 | when this compilation unit leaves the cache. */ | |
696 | char *scope; | |
697 | ||
698 | /* The location description associated with this DIE, if any. */ | |
699 | struct dwarf_block *locdesc; | |
700 | ||
701 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
c906108c SS |
702 | CORE_ADDR lowpc; |
703 | CORE_ADDR highpc; | |
72bf9492 | 704 | |
93311388 | 705 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 706 | DW_AT_sibling, if any. */ |
abc72ce4 DE |
707 | /* NOTE: This member isn't strictly necessary, read_partial_die could |
708 | return DW_AT_sibling values to its caller load_partial_dies. */ | |
fe1b8b76 | 709 | gdb_byte *sibling; |
72bf9492 DJ |
710 | |
711 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
712 | DW_AT_specification (or DW_AT_abstract_origin or | |
713 | DW_AT_extension). */ | |
b64f50a1 | 714 | sect_offset spec_offset; |
72bf9492 DJ |
715 | |
716 | /* Pointers to this DIE's parent, first child, and next sibling, | |
717 | if any. */ | |
718 | struct partial_die_info *die_parent, *die_child, *die_sibling; | |
c906108c SS |
719 | }; |
720 | ||
0963b4bd | 721 | /* This data structure holds the information of an abbrev. */ |
c906108c SS |
722 | struct abbrev_info |
723 | { | |
724 | unsigned int number; /* number identifying abbrev */ | |
725 | enum dwarf_tag tag; /* dwarf tag */ | |
f3dd6933 DJ |
726 | unsigned short has_children; /* boolean */ |
727 | unsigned short num_attrs; /* number of attributes */ | |
c906108c SS |
728 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ |
729 | struct abbrev_info *next; /* next in chain */ | |
730 | }; | |
731 | ||
732 | struct attr_abbrev | |
733 | { | |
9d25dd43 DE |
734 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
735 | ENUM_BITFIELD(dwarf_form) form : 16; | |
c906108c SS |
736 | }; |
737 | ||
0963b4bd | 738 | /* Attributes have a name and a value. */ |
b60c80d6 DJ |
739 | struct attribute |
740 | { | |
9d25dd43 | 741 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
8285870a JK |
742 | ENUM_BITFIELD(dwarf_form) form : 15; |
743 | ||
744 | /* Has DW_STRING already been updated by dwarf2_canonicalize_name? This | |
745 | field should be in u.str (existing only for DW_STRING) but it is kept | |
746 | here for better struct attribute alignment. */ | |
747 | unsigned int string_is_canonical : 1; | |
748 | ||
b60c80d6 DJ |
749 | union |
750 | { | |
751 | char *str; | |
752 | struct dwarf_block *blk; | |
43bbcdc2 PH |
753 | ULONGEST unsnd; |
754 | LONGEST snd; | |
b60c80d6 | 755 | CORE_ADDR addr; |
348e048f | 756 | struct signatured_type *signatured_type; |
b60c80d6 DJ |
757 | } |
758 | u; | |
759 | }; | |
760 | ||
0963b4bd | 761 | /* This data structure holds a complete die structure. */ |
c906108c SS |
762 | struct die_info |
763 | { | |
76815b17 DE |
764 | /* DWARF-2 tag for this DIE. */ |
765 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
766 | ||
767 | /* Number of attributes */ | |
98bfdba5 PA |
768 | unsigned char num_attrs; |
769 | ||
770 | /* True if we're presently building the full type name for the | |
771 | type derived from this DIE. */ | |
772 | unsigned char building_fullname : 1; | |
76815b17 DE |
773 | |
774 | /* Abbrev number */ | |
775 | unsigned int abbrev; | |
776 | ||
93311388 | 777 | /* Offset in .debug_info or .debug_types section. */ |
b64f50a1 | 778 | sect_offset offset; |
78ba4af6 JB |
779 | |
780 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
781 | points to this die's parent; CHILD points to the first child of | |
782 | this node; and all the children of a given node are chained | |
4950bc1c | 783 | together via their SIBLING fields. */ |
639d11d3 DC |
784 | struct die_info *child; /* Its first child, if any. */ |
785 | struct die_info *sibling; /* Its next sibling, if any. */ | |
786 | struct die_info *parent; /* Its parent, if any. */ | |
c906108c | 787 | |
b60c80d6 DJ |
788 | /* An array of attributes, with NUM_ATTRS elements. There may be |
789 | zero, but it's not common and zero-sized arrays are not | |
790 | sufficiently portable C. */ | |
791 | struct attribute attrs[1]; | |
c906108c SS |
792 | }; |
793 | ||
0963b4bd | 794 | /* Get at parts of an attribute structure. */ |
c906108c SS |
795 | |
796 | #define DW_STRING(attr) ((attr)->u.str) | |
8285870a | 797 | #define DW_STRING_IS_CANONICAL(attr) ((attr)->string_is_canonical) |
c906108c SS |
798 | #define DW_UNSND(attr) ((attr)->u.unsnd) |
799 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
800 | #define DW_SND(attr) ((attr)->u.snd) | |
801 | #define DW_ADDR(attr) ((attr)->u.addr) | |
348e048f | 802 | #define DW_SIGNATURED_TYPE(attr) ((attr)->u.signatured_type) |
c906108c | 803 | |
0963b4bd | 804 | /* Blocks are a bunch of untyped bytes. */ |
c906108c SS |
805 | struct dwarf_block |
806 | { | |
807 | unsigned int size; | |
1d6edc3c JK |
808 | |
809 | /* Valid only if SIZE is not zero. */ | |
fe1b8b76 | 810 | gdb_byte *data; |
c906108c SS |
811 | }; |
812 | ||
c906108c SS |
813 | #ifndef ATTR_ALLOC_CHUNK |
814 | #define ATTR_ALLOC_CHUNK 4 | |
815 | #endif | |
816 | ||
c906108c SS |
817 | /* Allocate fields for structs, unions and enums in this size. */ |
818 | #ifndef DW_FIELD_ALLOC_CHUNK | |
819 | #define DW_FIELD_ALLOC_CHUNK 4 | |
820 | #endif | |
821 | ||
c906108c SS |
822 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
823 | but this would require a corresponding change in unpack_field_as_long | |
824 | and friends. */ | |
825 | static int bits_per_byte = 8; | |
826 | ||
827 | /* The routines that read and process dies for a C struct or C++ class | |
828 | pass lists of data member fields and lists of member function fields | |
829 | in an instance of a field_info structure, as defined below. */ | |
830 | struct field_info | |
c5aa993b | 831 | { |
0963b4bd | 832 | /* List of data member and baseclasses fields. */ |
c5aa993b JM |
833 | struct nextfield |
834 | { | |
835 | struct nextfield *next; | |
836 | int accessibility; | |
837 | int virtuality; | |
838 | struct field field; | |
839 | } | |
7d0ccb61 | 840 | *fields, *baseclasses; |
c906108c | 841 | |
7d0ccb61 | 842 | /* Number of fields (including baseclasses). */ |
c5aa993b | 843 | int nfields; |
c906108c | 844 | |
c5aa993b JM |
845 | /* Number of baseclasses. */ |
846 | int nbaseclasses; | |
c906108c | 847 | |
c5aa993b JM |
848 | /* Set if the accesibility of one of the fields is not public. */ |
849 | int non_public_fields; | |
c906108c | 850 | |
c5aa993b JM |
851 | /* Member function fields array, entries are allocated in the order they |
852 | are encountered in the object file. */ | |
853 | struct nextfnfield | |
854 | { | |
855 | struct nextfnfield *next; | |
856 | struct fn_field fnfield; | |
857 | } | |
858 | *fnfields; | |
c906108c | 859 | |
c5aa993b JM |
860 | /* Member function fieldlist array, contains name of possibly overloaded |
861 | member function, number of overloaded member functions and a pointer | |
862 | to the head of the member function field chain. */ | |
863 | struct fnfieldlist | |
864 | { | |
865 | char *name; | |
866 | int length; | |
867 | struct nextfnfield *head; | |
868 | } | |
869 | *fnfieldlists; | |
c906108c | 870 | |
c5aa993b JM |
871 | /* Number of entries in the fnfieldlists array. */ |
872 | int nfnfields; | |
98751a41 JK |
873 | |
874 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
875 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
876 | struct typedef_field_list | |
877 | { | |
878 | struct typedef_field field; | |
879 | struct typedef_field_list *next; | |
880 | } | |
881 | *typedef_field_list; | |
882 | unsigned typedef_field_list_count; | |
c5aa993b | 883 | }; |
c906108c | 884 | |
10b3939b DJ |
885 | /* One item on the queue of compilation units to read in full symbols |
886 | for. */ | |
887 | struct dwarf2_queue_item | |
888 | { | |
889 | struct dwarf2_per_cu_data *per_cu; | |
890 | struct dwarf2_queue_item *next; | |
891 | }; | |
892 | ||
893 | /* The current queue. */ | |
894 | static struct dwarf2_queue_item *dwarf2_queue, *dwarf2_queue_tail; | |
895 | ||
ae038cb0 DJ |
896 | /* Loaded secondary compilation units are kept in memory until they |
897 | have not been referenced for the processing of this many | |
898 | compilation units. Set this to zero to disable caching. Cache | |
899 | sizes of up to at least twenty will improve startup time for | |
900 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
901 | static int dwarf2_max_cache_age = 5; | |
920d2a44 AC |
902 | static void |
903 | show_dwarf2_max_cache_age (struct ui_file *file, int from_tty, | |
904 | struct cmd_list_element *c, const char *value) | |
905 | { | |
3e43a32a MS |
906 | fprintf_filtered (file, _("The upper bound on the age of cached " |
907 | "dwarf2 compilation units is %s.\n"), | |
920d2a44 AC |
908 | value); |
909 | } | |
910 | ||
ae038cb0 | 911 | |
0963b4bd | 912 | /* Various complaints about symbol reading that don't abort the process. */ |
c906108c | 913 | |
4d3c2250 KB |
914 | static void |
915 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
2e276125 | 916 | { |
4d3c2250 | 917 | complaint (&symfile_complaints, |
e2e0b3e5 | 918 | _("statement list doesn't fit in .debug_line section")); |
4d3c2250 KB |
919 | } |
920 | ||
25e43795 DJ |
921 | static void |
922 | dwarf2_debug_line_missing_file_complaint (void) | |
923 | { | |
924 | complaint (&symfile_complaints, | |
925 | _(".debug_line section has line data without a file")); | |
926 | } | |
927 | ||
59205f5a JB |
928 | static void |
929 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
930 | { | |
931 | complaint (&symfile_complaints, | |
3e43a32a MS |
932 | _(".debug_line section has line " |
933 | "program sequence without an end")); | |
59205f5a JB |
934 | } |
935 | ||
4d3c2250 KB |
936 | static void |
937 | dwarf2_complex_location_expr_complaint (void) | |
2e276125 | 938 | { |
e2e0b3e5 | 939 | complaint (&symfile_complaints, _("location expression too complex")); |
4d3c2250 KB |
940 | } |
941 | ||
4d3c2250 KB |
942 | static void |
943 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
944 | int arg3) | |
2e276125 | 945 | { |
4d3c2250 | 946 | complaint (&symfile_complaints, |
3e43a32a MS |
947 | _("const value length mismatch for '%s', got %d, expected %d"), |
948 | arg1, arg2, arg3); | |
4d3c2250 KB |
949 | } |
950 | ||
951 | static void | |
cf2c3c16 | 952 | dwarf2_macros_too_long_complaint (struct dwarf2_section_info *section) |
2e276125 | 953 | { |
4d3c2250 | 954 | complaint (&symfile_complaints, |
cf2c3c16 TT |
955 | _("macro info runs off end of `%s' section"), |
956 | section->asection->name); | |
4d3c2250 KB |
957 | } |
958 | ||
959 | static void | |
960 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
8e19ed76 | 961 | { |
4d3c2250 | 962 | complaint (&symfile_complaints, |
3e43a32a MS |
963 | _("macro debug info contains a " |
964 | "malformed macro definition:\n`%s'"), | |
4d3c2250 KB |
965 | arg1); |
966 | } | |
967 | ||
968 | static void | |
969 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
8b2dbe47 | 970 | { |
4d3c2250 | 971 | complaint (&symfile_complaints, |
3e43a32a MS |
972 | _("invalid attribute class or form for '%s' in '%s'"), |
973 | arg1, arg2); | |
4d3c2250 | 974 | } |
c906108c | 975 | |
c906108c SS |
976 | /* local function prototypes */ |
977 | ||
4efb68b1 | 978 | static void dwarf2_locate_sections (bfd *, asection *, void *); |
c906108c | 979 | |
aaa75496 JB |
980 | static void dwarf2_create_include_psymtab (char *, struct partial_symtab *, |
981 | struct objfile *); | |
982 | ||
918dd910 JK |
983 | static void dwarf2_find_base_address (struct die_info *die, |
984 | struct dwarf2_cu *cu); | |
985 | ||
c67a9c90 | 986 | static void dwarf2_build_psymtabs_hard (struct objfile *); |
c906108c | 987 | |
72bf9492 DJ |
988 | static void scan_partial_symbols (struct partial_die_info *, |
989 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 990 | int, struct dwarf2_cu *); |
c906108c | 991 | |
72bf9492 DJ |
992 | static void add_partial_symbol (struct partial_die_info *, |
993 | struct dwarf2_cu *); | |
63d06c5c | 994 | |
72bf9492 DJ |
995 | static void add_partial_namespace (struct partial_die_info *pdi, |
996 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 997 | int need_pc, struct dwarf2_cu *cu); |
63d06c5c | 998 | |
5d7cb8df JK |
999 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
1000 | CORE_ADDR *highpc, int need_pc, | |
1001 | struct dwarf2_cu *cu); | |
1002 | ||
72bf9492 DJ |
1003 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
1004 | struct dwarf2_cu *cu); | |
91c24f0a | 1005 | |
bc30ff58 JB |
1006 | static void add_partial_subprogram (struct partial_die_info *pdi, |
1007 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1008 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 1009 | |
a14ed312 | 1010 | static void dwarf2_psymtab_to_symtab (struct partial_symtab *); |
c906108c | 1011 | |
a14ed312 | 1012 | static void psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 1013 | |
dee91e82 DE |
1014 | static void dwarf2_read_abbrevs (struct dwarf2_cu *, |
1015 | struct dwarf2_section_info *); | |
c906108c | 1016 | |
f3dd6933 | 1017 | static void dwarf2_free_abbrev_table (void *); |
c906108c | 1018 | |
6caca83c CC |
1019 | static unsigned int peek_abbrev_code (bfd *, gdb_byte *); |
1020 | ||
fe1b8b76 | 1021 | static struct abbrev_info *peek_die_abbrev (gdb_byte *, unsigned int *, |
891d2f0b | 1022 | struct dwarf2_cu *); |
72bf9492 | 1023 | |
57349743 | 1024 | static struct abbrev_info *dwarf2_lookup_abbrev (unsigned int, |
e7c27a73 | 1025 | struct dwarf2_cu *); |
c906108c | 1026 | |
dee91e82 DE |
1027 | static struct partial_die_info *load_partial_dies |
1028 | (const struct die_reader_specs *, gdb_byte *, int); | |
72bf9492 | 1029 | |
dee91e82 DE |
1030 | static gdb_byte *read_partial_die (const struct die_reader_specs *, |
1031 | struct partial_die_info *, | |
1032 | struct abbrev_info *, | |
1033 | unsigned int, | |
1034 | gdb_byte *); | |
c906108c | 1035 | |
b64f50a1 | 1036 | static struct partial_die_info *find_partial_die (sect_offset, |
10b3939b | 1037 | struct dwarf2_cu *); |
72bf9492 DJ |
1038 | |
1039 | static void fixup_partial_die (struct partial_die_info *, | |
1040 | struct dwarf2_cu *); | |
1041 | ||
dee91e82 DE |
1042 | static gdb_byte *read_attribute (const struct die_reader_specs *, |
1043 | struct attribute *, struct attr_abbrev *, | |
1044 | gdb_byte *); | |
a8329558 | 1045 | |
fe1b8b76 | 1046 | static unsigned int read_1_byte (bfd *, gdb_byte *); |
c906108c | 1047 | |
fe1b8b76 | 1048 | static int read_1_signed_byte (bfd *, gdb_byte *); |
c906108c | 1049 | |
fe1b8b76 | 1050 | static unsigned int read_2_bytes (bfd *, gdb_byte *); |
c906108c | 1051 | |
fe1b8b76 | 1052 | static unsigned int read_4_bytes (bfd *, gdb_byte *); |
c906108c | 1053 | |
93311388 | 1054 | static ULONGEST read_8_bytes (bfd *, gdb_byte *); |
c906108c | 1055 | |
fe1b8b76 | 1056 | static CORE_ADDR read_address (bfd *, gdb_byte *ptr, struct dwarf2_cu *, |
891d2f0b | 1057 | unsigned int *); |
c906108c | 1058 | |
c764a876 DE |
1059 | static LONGEST read_initial_length (bfd *, gdb_byte *, unsigned int *); |
1060 | ||
1061 | static LONGEST read_checked_initial_length_and_offset | |
1062 | (bfd *, gdb_byte *, const struct comp_unit_head *, | |
1063 | unsigned int *, unsigned int *); | |
613e1657 | 1064 | |
fe1b8b76 | 1065 | static LONGEST read_offset (bfd *, gdb_byte *, const struct comp_unit_head *, |
c764a876 DE |
1066 | unsigned int *); |
1067 | ||
1068 | static LONGEST read_offset_1 (bfd *, gdb_byte *, unsigned int); | |
613e1657 | 1069 | |
fe1b8b76 | 1070 | static gdb_byte *read_n_bytes (bfd *, gdb_byte *, unsigned int); |
c906108c | 1071 | |
9b1c24c8 | 1072 | static char *read_direct_string (bfd *, gdb_byte *, unsigned int *); |
c906108c | 1073 | |
fe1b8b76 JB |
1074 | static char *read_indirect_string (bfd *, gdb_byte *, |
1075 | const struct comp_unit_head *, | |
1076 | unsigned int *); | |
4bdf3d34 | 1077 | |
12df843f | 1078 | static ULONGEST read_unsigned_leb128 (bfd *, gdb_byte *, unsigned int *); |
c906108c | 1079 | |
12df843f | 1080 | static LONGEST read_signed_leb128 (bfd *, gdb_byte *, unsigned int *); |
c906108c | 1081 | |
3019eac3 DE |
1082 | static CORE_ADDR read_addr_index_from_leb128 (struct dwarf2_cu *, gdb_byte *, |
1083 | unsigned int *); | |
1084 | ||
1085 | static char *read_str_index (const struct die_reader_specs *reader, | |
1086 | struct dwarf2_cu *cu, ULONGEST str_index); | |
1087 | ||
fe1b8b76 | 1088 | static gdb_byte *skip_leb128 (bfd *, gdb_byte *); |
4bb7a0a7 | 1089 | |
e142c38c | 1090 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 1091 | |
e142c38c DJ |
1092 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
1093 | struct dwarf2_cu *); | |
c906108c | 1094 | |
348e048f DE |
1095 | static struct attribute *dwarf2_attr_no_follow (struct die_info *, |
1096 | unsigned int, | |
1097 | struct dwarf2_cu *); | |
1098 | ||
05cf31d1 JB |
1099 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
1100 | struct dwarf2_cu *cu); | |
1101 | ||
e142c38c | 1102 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1103 | |
e142c38c | 1104 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1105 | struct dwarf2_cu **); |
63d06c5c | 1106 | |
debd256d JB |
1107 | static void free_line_header (struct line_header *lh); |
1108 | ||
aaa75496 JB |
1109 | static void add_file_name (struct line_header *, char *, unsigned int, |
1110 | unsigned int, unsigned int); | |
1111 | ||
3019eac3 DE |
1112 | static struct line_header *dwarf_decode_line_header (unsigned int offset, |
1113 | struct dwarf2_cu *cu); | |
debd256d | 1114 | |
f3f5162e DE |
1115 | static void dwarf_decode_lines (struct line_header *, const char *, |
1116 | struct dwarf2_cu *, struct partial_symtab *, | |
1117 | int); | |
c906108c | 1118 | |
72b9f47f | 1119 | static void dwarf2_start_subfile (char *, const char *, const char *); |
c906108c | 1120 | |
a14ed312 | 1121 | static struct symbol *new_symbol (struct die_info *, struct type *, |
e7c27a73 | 1122 | struct dwarf2_cu *); |
c906108c | 1123 | |
34eaf542 TT |
1124 | static struct symbol *new_symbol_full (struct die_info *, struct type *, |
1125 | struct dwarf2_cu *, struct symbol *); | |
1126 | ||
a14ed312 | 1127 | static void dwarf2_const_value (struct attribute *, struct symbol *, |
e7c27a73 | 1128 | struct dwarf2_cu *); |
c906108c | 1129 | |
98bfdba5 PA |
1130 | static void dwarf2_const_value_attr (struct attribute *attr, |
1131 | struct type *type, | |
1132 | const char *name, | |
1133 | struct obstack *obstack, | |
12df843f | 1134 | struct dwarf2_cu *cu, LONGEST *value, |
98bfdba5 PA |
1135 | gdb_byte **bytes, |
1136 | struct dwarf2_locexpr_baton **baton); | |
2df3850c | 1137 | |
e7c27a73 | 1138 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1139 | |
b4ba55a1 JB |
1140 | static int need_gnat_info (struct dwarf2_cu *); |
1141 | ||
3e43a32a MS |
1142 | static struct type *die_descriptive_type (struct die_info *, |
1143 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1144 | |
1145 | static void set_descriptive_type (struct type *, struct die_info *, | |
1146 | struct dwarf2_cu *); | |
1147 | ||
e7c27a73 DJ |
1148 | static struct type *die_containing_type (struct die_info *, |
1149 | struct dwarf2_cu *); | |
c906108c | 1150 | |
673bfd45 DE |
1151 | static struct type *lookup_die_type (struct die_info *, struct attribute *, |
1152 | struct dwarf2_cu *); | |
c906108c | 1153 | |
f792889a | 1154 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1155 | |
673bfd45 DE |
1156 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1157 | ||
0d5cff50 | 1158 | static const char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1159 | |
6e70227d | 1160 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1161 | const char *suffix, int physname, |
1162 | struct dwarf2_cu *cu); | |
63d06c5c | 1163 | |
e7c27a73 | 1164 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1165 | |
348e048f DE |
1166 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1167 | ||
e7c27a73 | 1168 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1169 | |
e7c27a73 | 1170 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1171 | |
96408a79 SA |
1172 | static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu); |
1173 | ||
ff013f42 JK |
1174 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
1175 | struct dwarf2_cu *, struct partial_symtab *); | |
1176 | ||
a14ed312 | 1177 | static int dwarf2_get_pc_bounds (struct die_info *, |
d85a05f0 DJ |
1178 | CORE_ADDR *, CORE_ADDR *, struct dwarf2_cu *, |
1179 | struct partial_symtab *); | |
c906108c | 1180 | |
fae299cd DC |
1181 | static void get_scope_pc_bounds (struct die_info *, |
1182 | CORE_ADDR *, CORE_ADDR *, | |
1183 | struct dwarf2_cu *); | |
1184 | ||
801e3a5b JB |
1185 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
1186 | CORE_ADDR, struct dwarf2_cu *); | |
1187 | ||
a14ed312 | 1188 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1189 | struct dwarf2_cu *); |
c906108c | 1190 | |
a14ed312 | 1191 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1192 | struct type *, struct dwarf2_cu *); |
c906108c | 1193 | |
a14ed312 | 1194 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1195 | struct die_info *, struct type *, |
e7c27a73 | 1196 | struct dwarf2_cu *); |
c906108c | 1197 | |
a14ed312 | 1198 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1199 | struct type *, |
1200 | struct dwarf2_cu *); | |
c906108c | 1201 | |
134d01f1 | 1202 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1203 | |
e7c27a73 | 1204 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1205 | |
e7c27a73 | 1206 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1207 | |
5d7cb8df JK |
1208 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1209 | ||
27aa8d6a SW |
1210 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1211 | ||
f55ee35c JK |
1212 | static struct type *read_module_type (struct die_info *die, |
1213 | struct dwarf2_cu *cu); | |
1214 | ||
38d518c9 | 1215 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1216 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1217 | |
134d01f1 | 1218 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1219 | |
e7c27a73 | 1220 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 1221 | |
6e70227d | 1222 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1223 | struct dwarf2_cu *); |
1224 | ||
dee91e82 | 1225 | static struct die_info *read_die_and_children (const struct die_reader_specs *, |
93311388 | 1226 | gdb_byte *info_ptr, |
fe1b8b76 | 1227 | gdb_byte **new_info_ptr, |
639d11d3 DC |
1228 | struct die_info *parent); |
1229 | ||
dee91e82 | 1230 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *, |
93311388 | 1231 | gdb_byte *info_ptr, |
fe1b8b76 | 1232 | gdb_byte **new_info_ptr, |
639d11d3 DC |
1233 | struct die_info *parent); |
1234 | ||
3019eac3 DE |
1235 | static gdb_byte *read_full_die_1 (const struct die_reader_specs *, |
1236 | struct die_info **, gdb_byte *, int *, int); | |
1237 | ||
dee91e82 DE |
1238 | static gdb_byte *read_full_die (const struct die_reader_specs *, |
1239 | struct die_info **, gdb_byte *, int *); | |
93311388 | 1240 | |
e7c27a73 | 1241 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1242 | |
71c25dea TT |
1243 | static char *dwarf2_canonicalize_name (char *, struct dwarf2_cu *, |
1244 | struct obstack *); | |
1245 | ||
e142c38c | 1246 | static char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1247 | |
98bfdba5 PA |
1248 | static const char *dwarf2_full_name (char *name, |
1249 | struct die_info *die, | |
1250 | struct dwarf2_cu *cu); | |
1251 | ||
e142c38c | 1252 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1253 | struct dwarf2_cu **); |
9219021c | 1254 | |
f39c6ffd | 1255 | static const char *dwarf_tag_name (unsigned int); |
c906108c | 1256 | |
f39c6ffd | 1257 | static const char *dwarf_attr_name (unsigned int); |
c906108c | 1258 | |
f39c6ffd | 1259 | static const char *dwarf_form_name (unsigned int); |
c906108c | 1260 | |
a14ed312 | 1261 | static char *dwarf_bool_name (unsigned int); |
c906108c | 1262 | |
f39c6ffd | 1263 | static const char *dwarf_type_encoding_name (unsigned int); |
c906108c | 1264 | |
f9aca02d | 1265 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 1266 | |
d97bc12b DE |
1267 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1268 | ||
1269 | static void dump_die_for_error (struct die_info *); | |
1270 | ||
1271 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1272 | struct die_info *); | |
c906108c | 1273 | |
d97bc12b | 1274 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1275 | |
51545339 | 1276 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1277 | struct dwarf2_cu *); |
c906108c | 1278 | |
93311388 DE |
1279 | static int is_ref_attr (struct attribute *); |
1280 | ||
b64f50a1 | 1281 | static sect_offset dwarf2_get_ref_die_offset (struct attribute *); |
c906108c | 1282 | |
43bbcdc2 | 1283 | static LONGEST dwarf2_get_attr_constant_value (struct attribute *, int); |
a02abb62 | 1284 | |
348e048f DE |
1285 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
1286 | struct attribute *, | |
1287 | struct dwarf2_cu **); | |
1288 | ||
10b3939b DJ |
1289 | static struct die_info *follow_die_ref (struct die_info *, |
1290 | struct attribute *, | |
f2f0e013 | 1291 | struct dwarf2_cu **); |
c906108c | 1292 | |
348e048f DE |
1293 | static struct die_info *follow_die_sig (struct die_info *, |
1294 | struct attribute *, | |
1295 | struct dwarf2_cu **); | |
1296 | ||
6c83ed52 TT |
1297 | static struct signatured_type *lookup_signatured_type_at_offset |
1298 | (struct objfile *objfile, | |
b64f50a1 | 1299 | struct dwarf2_section_info *section, sect_offset offset); |
6c83ed52 | 1300 | |
e5fe5e75 | 1301 | static void load_full_type_unit (struct dwarf2_per_cu_data *per_cu); |
348e048f | 1302 | |
52dc124a | 1303 | static void read_signatured_type (struct signatured_type *); |
348e048f | 1304 | |
c906108c SS |
1305 | /* memory allocation interface */ |
1306 | ||
7b5a2f43 | 1307 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1308 | |
f3dd6933 | 1309 | static struct abbrev_info *dwarf_alloc_abbrev (struct dwarf2_cu *); |
c906108c | 1310 | |
b60c80d6 | 1311 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1312 | |
2e276125 | 1313 | static void dwarf_decode_macros (struct line_header *, unsigned int, |
cf2c3c16 TT |
1314 | char *, bfd *, struct dwarf2_cu *, |
1315 | struct dwarf2_section_info *, | |
fceca515 | 1316 | int, const char *); |
2e276125 | 1317 | |
8e19ed76 PS |
1318 | static int attr_form_is_block (struct attribute *); |
1319 | ||
3690dd37 JB |
1320 | static int attr_form_is_section_offset (struct attribute *); |
1321 | ||
1322 | static int attr_form_is_constant (struct attribute *); | |
1323 | ||
8cf6f0b1 TT |
1324 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
1325 | struct dwarf2_loclist_baton *baton, | |
1326 | struct attribute *attr); | |
1327 | ||
93e7bd98 DJ |
1328 | static void dwarf2_symbol_mark_computed (struct attribute *attr, |
1329 | struct symbol *sym, | |
1330 | struct dwarf2_cu *cu); | |
4c2df51b | 1331 | |
dee91e82 DE |
1332 | static gdb_byte *skip_one_die (const struct die_reader_specs *reader, |
1333 | gdb_byte *info_ptr, | |
1334 | struct abbrev_info *abbrev); | |
4bb7a0a7 | 1335 | |
72bf9492 DJ |
1336 | static void free_stack_comp_unit (void *); |
1337 | ||
72bf9492 DJ |
1338 | static hashval_t partial_die_hash (const void *item); |
1339 | ||
1340 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1341 | ||
ae038cb0 | 1342 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
b64f50a1 | 1343 | (sect_offset offset, struct objfile *objfile); |
ae038cb0 | 1344 | |
9816fde3 | 1345 | static void init_one_comp_unit (struct dwarf2_cu *cu, |
23745b47 | 1346 | struct dwarf2_per_cu_data *per_cu); |
9816fde3 JK |
1347 | |
1348 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, | |
1349 | struct die_info *comp_unit_die); | |
93311388 | 1350 | |
68dc6402 | 1351 | static void free_heap_comp_unit (void *); |
ae038cb0 DJ |
1352 | |
1353 | static void free_cached_comp_units (void *); | |
1354 | ||
1355 | static void age_cached_comp_units (void); | |
1356 | ||
dee91e82 | 1357 | static void free_one_cached_comp_unit (struct dwarf2_per_cu_data *); |
ae038cb0 | 1358 | |
f792889a DJ |
1359 | static struct type *set_die_type (struct die_info *, struct type *, |
1360 | struct dwarf2_cu *); | |
1c379e20 | 1361 | |
ae038cb0 DJ |
1362 | static void create_all_comp_units (struct objfile *); |
1363 | ||
0e50663e | 1364 | static int create_all_type_units (struct objfile *); |
1fd400ff | 1365 | |
a0f42c21 | 1366 | static void load_full_comp_unit (struct dwarf2_per_cu_data *); |
10b3939b DJ |
1367 | |
1368 | static void process_full_comp_unit (struct dwarf2_per_cu_data *); | |
1369 | ||
1370 | static void dwarf2_add_dependence (struct dwarf2_cu *, | |
1371 | struct dwarf2_per_cu_data *); | |
1372 | ||
ae038cb0 DJ |
1373 | static void dwarf2_mark (struct dwarf2_cu *); |
1374 | ||
1375 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1376 | ||
b64f50a1 | 1377 | static struct type *get_die_type_at_offset (sect_offset, |
673bfd45 DE |
1378 | struct dwarf2_per_cu_data *per_cu); |
1379 | ||
f792889a | 1380 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1381 | |
9291a0cd TT |
1382 | static void dwarf2_release_queue (void *dummy); |
1383 | ||
a0f42c21 | 1384 | static void queue_comp_unit (struct dwarf2_per_cu_data *per_cu); |
9291a0cd | 1385 | |
a0f42c21 | 1386 | static void process_queue (void); |
9291a0cd TT |
1387 | |
1388 | static void find_file_and_directory (struct die_info *die, | |
1389 | struct dwarf2_cu *cu, | |
1390 | char **name, char **comp_dir); | |
1391 | ||
1392 | static char *file_full_name (int file, struct line_header *lh, | |
1393 | const char *comp_dir); | |
1394 | ||
9ff913ba DE |
1395 | static gdb_byte *read_and_check_comp_unit_head |
1396 | (struct comp_unit_head *header, | |
1397 | struct dwarf2_section_info *section, gdb_byte *info_ptr, | |
1398 | int is_debug_types_section); | |
9291a0cd | 1399 | |
fd820528 DE |
1400 | static void init_cutu_and_read_dies |
1401 | (struct dwarf2_per_cu_data *this_cu, int use_existing_cu, int keep, | |
3019eac3 DE |
1402 | die_reader_func_ftype *die_reader_func, void *data); |
1403 | ||
dee91e82 DE |
1404 | static void init_cutu_and_read_dies_simple |
1405 | (struct dwarf2_per_cu_data *this_cu, | |
1406 | die_reader_func_ftype *die_reader_func, void *data); | |
9291a0cd | 1407 | |
673bfd45 | 1408 | static htab_t allocate_signatured_type_table (struct objfile *objfile); |
1fd400ff | 1409 | |
dee91e82 DE |
1410 | static void process_psymtab_comp_unit (struct dwarf2_per_cu_data *); |
1411 | ||
3019eac3 DE |
1412 | static htab_t allocate_dwo_unit_table (struct objfile *objfile); |
1413 | ||
1414 | static struct dwo_unit *lookup_dwo_comp_unit | |
1415 | (struct dwarf2_per_cu_data *, char *, const char *, ULONGEST); | |
1416 | ||
1417 | static struct dwo_unit *lookup_dwo_type_unit | |
1418 | (struct signatured_type *, char *, const char *); | |
1419 | ||
1420 | static void free_dwo_file_cleanup (void *); | |
1421 | ||
1422 | static void munmap_section_buffer (struct dwarf2_section_info *); | |
1423 | ||
9291a0cd TT |
1424 | #if WORDS_BIGENDIAN |
1425 | ||
1426 | /* Convert VALUE between big- and little-endian. */ | |
1427 | static offset_type | |
1428 | byte_swap (offset_type value) | |
1429 | { | |
1430 | offset_type result; | |
1431 | ||
1432 | result = (value & 0xff) << 24; | |
1433 | result |= (value & 0xff00) << 8; | |
1434 | result |= (value & 0xff0000) >> 8; | |
1435 | result |= (value & 0xff000000) >> 24; | |
1436 | return result; | |
1437 | } | |
1438 | ||
1439 | #define MAYBE_SWAP(V) byte_swap (V) | |
1440 | ||
1441 | #else | |
1442 | #define MAYBE_SWAP(V) (V) | |
1443 | #endif /* WORDS_BIGENDIAN */ | |
1444 | ||
1445 | /* The suffix for an index file. */ | |
1446 | #define INDEX_SUFFIX ".gdb-index" | |
1447 | ||
3da10d80 KS |
1448 | static const char *dwarf2_physname (char *name, struct die_info *die, |
1449 | struct dwarf2_cu *cu); | |
1450 | ||
c906108c | 1451 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
1452 | information and return true if we have enough to do something. |
1453 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
1454 | ELF names are used. */ | |
c906108c SS |
1455 | |
1456 | int | |
251d32d9 TG |
1457 | dwarf2_has_info (struct objfile *objfile, |
1458 | const struct dwarf2_debug_sections *names) | |
c906108c | 1459 | { |
be391dca TT |
1460 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); |
1461 | if (!dwarf2_per_objfile) | |
1462 | { | |
1463 | /* Initialize per-objfile state. */ | |
1464 | struct dwarf2_per_objfile *data | |
1465 | = obstack_alloc (&objfile->objfile_obstack, sizeof (*data)); | |
9a619af0 | 1466 | |
be391dca TT |
1467 | memset (data, 0, sizeof (*data)); |
1468 | set_objfile_data (objfile, dwarf2_objfile_data_key, data); | |
1469 | dwarf2_per_objfile = data; | |
6502dd73 | 1470 | |
251d32d9 TG |
1471 | bfd_map_over_sections (objfile->obfd, dwarf2_locate_sections, |
1472 | (void *) names); | |
be391dca TT |
1473 | dwarf2_per_objfile->objfile = objfile; |
1474 | } | |
1475 | return (dwarf2_per_objfile->info.asection != NULL | |
1476 | && dwarf2_per_objfile->abbrev.asection != NULL); | |
c906108c SS |
1477 | } |
1478 | ||
251d32d9 TG |
1479 | /* When loading sections, we look either for uncompressed section or for |
1480 | compressed section names. */ | |
233a11ab CS |
1481 | |
1482 | static int | |
251d32d9 TG |
1483 | section_is_p (const char *section_name, |
1484 | const struct dwarf2_section_names *names) | |
233a11ab | 1485 | { |
251d32d9 TG |
1486 | if (names->normal != NULL |
1487 | && strcmp (section_name, names->normal) == 0) | |
1488 | return 1; | |
1489 | if (names->compressed != NULL | |
1490 | && strcmp (section_name, names->compressed) == 0) | |
1491 | return 1; | |
1492 | return 0; | |
233a11ab CS |
1493 | } |
1494 | ||
c906108c SS |
1495 | /* This function is mapped across the sections and remembers the |
1496 | offset and size of each of the debugging sections we are interested | |
1497 | in. */ | |
1498 | ||
1499 | static void | |
251d32d9 | 1500 | dwarf2_locate_sections (bfd *abfd, asection *sectp, void *vnames) |
c906108c | 1501 | { |
251d32d9 TG |
1502 | const struct dwarf2_debug_sections *names; |
1503 | ||
1504 | if (vnames == NULL) | |
1505 | names = &dwarf2_elf_names; | |
1506 | else | |
1507 | names = (const struct dwarf2_debug_sections *) vnames; | |
1508 | ||
1509 | if (section_is_p (sectp->name, &names->info)) | |
c906108c | 1510 | { |
dce234bc PP |
1511 | dwarf2_per_objfile->info.asection = sectp; |
1512 | dwarf2_per_objfile->info.size = bfd_get_section_size (sectp); | |
c906108c | 1513 | } |
251d32d9 | 1514 | else if (section_is_p (sectp->name, &names->abbrev)) |
c906108c | 1515 | { |
dce234bc PP |
1516 | dwarf2_per_objfile->abbrev.asection = sectp; |
1517 | dwarf2_per_objfile->abbrev.size = bfd_get_section_size (sectp); | |
c906108c | 1518 | } |
251d32d9 | 1519 | else if (section_is_p (sectp->name, &names->line)) |
c906108c | 1520 | { |
dce234bc PP |
1521 | dwarf2_per_objfile->line.asection = sectp; |
1522 | dwarf2_per_objfile->line.size = bfd_get_section_size (sectp); | |
c906108c | 1523 | } |
251d32d9 | 1524 | else if (section_is_p (sectp->name, &names->loc)) |
c906108c | 1525 | { |
dce234bc PP |
1526 | dwarf2_per_objfile->loc.asection = sectp; |
1527 | dwarf2_per_objfile->loc.size = bfd_get_section_size (sectp); | |
c906108c | 1528 | } |
251d32d9 | 1529 | else if (section_is_p (sectp->name, &names->macinfo)) |
c906108c | 1530 | { |
dce234bc PP |
1531 | dwarf2_per_objfile->macinfo.asection = sectp; |
1532 | dwarf2_per_objfile->macinfo.size = bfd_get_section_size (sectp); | |
c906108c | 1533 | } |
cf2c3c16 TT |
1534 | else if (section_is_p (sectp->name, &names->macro)) |
1535 | { | |
1536 | dwarf2_per_objfile->macro.asection = sectp; | |
1537 | dwarf2_per_objfile->macro.size = bfd_get_section_size (sectp); | |
1538 | } | |
251d32d9 | 1539 | else if (section_is_p (sectp->name, &names->str)) |
c906108c | 1540 | { |
dce234bc PP |
1541 | dwarf2_per_objfile->str.asection = sectp; |
1542 | dwarf2_per_objfile->str.size = bfd_get_section_size (sectp); | |
c906108c | 1543 | } |
3019eac3 DE |
1544 | else if (section_is_p (sectp->name, &names->addr)) |
1545 | { | |
1546 | dwarf2_per_objfile->addr.asection = sectp; | |
1547 | dwarf2_per_objfile->addr.size = bfd_get_section_size (sectp); | |
1548 | } | |
251d32d9 | 1549 | else if (section_is_p (sectp->name, &names->frame)) |
b6af0555 | 1550 | { |
dce234bc PP |
1551 | dwarf2_per_objfile->frame.asection = sectp; |
1552 | dwarf2_per_objfile->frame.size = bfd_get_section_size (sectp); | |
b6af0555 | 1553 | } |
251d32d9 | 1554 | else if (section_is_p (sectp->name, &names->eh_frame)) |
b6af0555 | 1555 | { |
3799ccc6 | 1556 | flagword aflag = bfd_get_section_flags (ignore_abfd, sectp); |
9a619af0 | 1557 | |
3799ccc6 EZ |
1558 | if (aflag & SEC_HAS_CONTENTS) |
1559 | { | |
dce234bc PP |
1560 | dwarf2_per_objfile->eh_frame.asection = sectp; |
1561 | dwarf2_per_objfile->eh_frame.size = bfd_get_section_size (sectp); | |
3799ccc6 | 1562 | } |
b6af0555 | 1563 | } |
251d32d9 | 1564 | else if (section_is_p (sectp->name, &names->ranges)) |
af34e669 | 1565 | { |
dce234bc PP |
1566 | dwarf2_per_objfile->ranges.asection = sectp; |
1567 | dwarf2_per_objfile->ranges.size = bfd_get_section_size (sectp); | |
af34e669 | 1568 | } |
251d32d9 | 1569 | else if (section_is_p (sectp->name, &names->types)) |
348e048f | 1570 | { |
8b70b953 TT |
1571 | struct dwarf2_section_info type_section; |
1572 | ||
1573 | memset (&type_section, 0, sizeof (type_section)); | |
1574 | type_section.asection = sectp; | |
1575 | type_section.size = bfd_get_section_size (sectp); | |
1576 | ||
1577 | VEC_safe_push (dwarf2_section_info_def, dwarf2_per_objfile->types, | |
1578 | &type_section); | |
348e048f | 1579 | } |
251d32d9 | 1580 | else if (section_is_p (sectp->name, &names->gdb_index)) |
9291a0cd TT |
1581 | { |
1582 | dwarf2_per_objfile->gdb_index.asection = sectp; | |
1583 | dwarf2_per_objfile->gdb_index.size = bfd_get_section_size (sectp); | |
1584 | } | |
dce234bc | 1585 | |
72dca2f5 FR |
1586 | if ((bfd_get_section_flags (abfd, sectp) & SEC_LOAD) |
1587 | && bfd_section_vma (abfd, sectp) == 0) | |
1588 | dwarf2_per_objfile->has_section_at_zero = 1; | |
c906108c SS |
1589 | } |
1590 | ||
dce234bc PP |
1591 | /* Decompress a section that was compressed using zlib. Store the |
1592 | decompressed buffer, and its size, in OUTBUF and OUTSIZE. */ | |
233a11ab CS |
1593 | |
1594 | static void | |
dce234bc PP |
1595 | zlib_decompress_section (struct objfile *objfile, asection *sectp, |
1596 | gdb_byte **outbuf, bfd_size_type *outsize) | |
1597 | { | |
3019eac3 | 1598 | bfd *abfd = sectp->owner; |
dce234bc PP |
1599 | #ifndef HAVE_ZLIB_H |
1600 | error (_("Support for zlib-compressed DWARF data (from '%s') " | |
1601 | "is disabled in this copy of GDB"), | |
1602 | bfd_get_filename (abfd)); | |
1603 | #else | |
1604 | bfd_size_type compressed_size = bfd_get_section_size (sectp); | |
1605 | gdb_byte *compressed_buffer = xmalloc (compressed_size); | |
affddf13 | 1606 | struct cleanup *cleanup = make_cleanup (xfree, compressed_buffer); |
dce234bc PP |
1607 | bfd_size_type uncompressed_size; |
1608 | gdb_byte *uncompressed_buffer; | |
1609 | z_stream strm; | |
1610 | int rc; | |
1611 | int header_size = 12; | |
1612 | ||
1613 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 | |
3e43a32a MS |
1614 | || bfd_bread (compressed_buffer, |
1615 | compressed_size, abfd) != compressed_size) | |
dce234bc PP |
1616 | error (_("Dwarf Error: Can't read DWARF data from '%s'"), |
1617 | bfd_get_filename (abfd)); | |
1618 | ||
1619 | /* Read the zlib header. In this case, it should be "ZLIB" followed | |
1620 | by the uncompressed section size, 8 bytes in big-endian order. */ | |
1621 | if (compressed_size < header_size | |
1622 | || strncmp (compressed_buffer, "ZLIB", 4) != 0) | |
1623 | error (_("Dwarf Error: Corrupt DWARF ZLIB header from '%s'"), | |
1624 | bfd_get_filename (abfd)); | |
1625 | uncompressed_size = compressed_buffer[4]; uncompressed_size <<= 8; | |
1626 | uncompressed_size += compressed_buffer[5]; uncompressed_size <<= 8; | |
1627 | uncompressed_size += compressed_buffer[6]; uncompressed_size <<= 8; | |
1628 | uncompressed_size += compressed_buffer[7]; uncompressed_size <<= 8; | |
1629 | uncompressed_size += compressed_buffer[8]; uncompressed_size <<= 8; | |
1630 | uncompressed_size += compressed_buffer[9]; uncompressed_size <<= 8; | |
1631 | uncompressed_size += compressed_buffer[10]; uncompressed_size <<= 8; | |
1632 | uncompressed_size += compressed_buffer[11]; | |
1633 | ||
1634 | /* It is possible the section consists of several compressed | |
1635 | buffers concatenated together, so we uncompress in a loop. */ | |
1636 | strm.zalloc = NULL; | |
1637 | strm.zfree = NULL; | |
1638 | strm.opaque = NULL; | |
1639 | strm.avail_in = compressed_size - header_size; | |
1640 | strm.next_in = (Bytef*) compressed_buffer + header_size; | |
1641 | strm.avail_out = uncompressed_size; | |
1642 | uncompressed_buffer = obstack_alloc (&objfile->objfile_obstack, | |
1643 | uncompressed_size); | |
1644 | rc = inflateInit (&strm); | |
1645 | while (strm.avail_in > 0) | |
1646 | { | |
1647 | if (rc != Z_OK) | |
1648 | error (_("Dwarf Error: setting up DWARF uncompression in '%s': %d"), | |
1649 | bfd_get_filename (abfd), rc); | |
1650 | strm.next_out = ((Bytef*) uncompressed_buffer | |
1651 | + (uncompressed_size - strm.avail_out)); | |
1652 | rc = inflate (&strm, Z_FINISH); | |
1653 | if (rc != Z_STREAM_END) | |
1654 | error (_("Dwarf Error: zlib error uncompressing from '%s': %d"), | |
1655 | bfd_get_filename (abfd), rc); | |
1656 | rc = inflateReset (&strm); | |
1657 | } | |
1658 | rc = inflateEnd (&strm); | |
1659 | if (rc != Z_OK | |
1660 | || strm.avail_out != 0) | |
1661 | error (_("Dwarf Error: concluding DWARF uncompression in '%s': %d"), | |
1662 | bfd_get_filename (abfd), rc); | |
1663 | ||
affddf13 | 1664 | do_cleanups (cleanup); |
dce234bc PP |
1665 | *outbuf = uncompressed_buffer; |
1666 | *outsize = uncompressed_size; | |
1667 | #endif | |
233a11ab CS |
1668 | } |
1669 | ||
fceca515 DE |
1670 | /* A helper function that decides whether a section is empty, |
1671 | or not present. */ | |
9e0ac564 TT |
1672 | |
1673 | static int | |
1674 | dwarf2_section_empty_p (struct dwarf2_section_info *info) | |
1675 | { | |
1676 | return info->asection == NULL || info->size == 0; | |
1677 | } | |
1678 | ||
3019eac3 DE |
1679 | /* Read the contents of the section INFO. |
1680 | OBJFILE is the main object file, but not necessarily the file where | |
1681 | the section comes from. E.g., for DWO files INFO->asection->owner | |
1682 | is the bfd of the DWO file. | |
dce234bc | 1683 | If the section is compressed, uncompress it before returning. */ |
c906108c | 1684 | |
dce234bc PP |
1685 | static void |
1686 | dwarf2_read_section (struct objfile *objfile, struct dwarf2_section_info *info) | |
c906108c | 1687 | { |
dce234bc | 1688 | asection *sectp = info->asection; |
3019eac3 | 1689 | bfd *abfd; |
dce234bc PP |
1690 | gdb_byte *buf, *retbuf; |
1691 | unsigned char header[4]; | |
c906108c | 1692 | |
be391dca TT |
1693 | if (info->readin) |
1694 | return; | |
dce234bc | 1695 | info->buffer = NULL; |
b315ab21 | 1696 | info->map_addr = NULL; |
be391dca | 1697 | info->readin = 1; |
188dd5d6 | 1698 | |
9e0ac564 | 1699 | if (dwarf2_section_empty_p (info)) |
dce234bc | 1700 | return; |
c906108c | 1701 | |
3019eac3 DE |
1702 | /* Note that ABFD may not be from OBJFILE, e.g. a DWO section. */ |
1703 | abfd = sectp->owner; | |
1704 | ||
dce234bc PP |
1705 | /* Check if the file has a 4-byte header indicating compression. */ |
1706 | if (info->size > sizeof (header) | |
1707 | && bfd_seek (abfd, sectp->filepos, SEEK_SET) == 0 | |
1708 | && bfd_bread (header, sizeof (header), abfd) == sizeof (header)) | |
1709 | { | |
1710 | /* Upon decompression, update the buffer and its size. */ | |
1711 | if (strncmp (header, "ZLIB", sizeof (header)) == 0) | |
1712 | { | |
1713 | zlib_decompress_section (objfile, sectp, &info->buffer, | |
1714 | &info->size); | |
1715 | return; | |
1716 | } | |
1717 | } | |
4bdf3d34 | 1718 | |
dce234bc PP |
1719 | #ifdef HAVE_MMAP |
1720 | if (pagesize == 0) | |
1721 | pagesize = getpagesize (); | |
2e276125 | 1722 | |
dce234bc PP |
1723 | /* Only try to mmap sections which are large enough: we don't want to |
1724 | waste space due to fragmentation. Also, only try mmap for sections | |
1725 | without relocations. */ | |
1726 | ||
1727 | if (info->size > 4 * pagesize && (sectp->flags & SEC_RELOC) == 0) | |
1728 | { | |
b315ab21 TG |
1729 | info->buffer = bfd_mmap (abfd, 0, info->size, PROT_READ, |
1730 | MAP_PRIVATE, sectp->filepos, | |
1731 | &info->map_addr, &info->map_len); | |
dce234bc | 1732 | |
b315ab21 | 1733 | if ((caddr_t)info->buffer != MAP_FAILED) |
dce234bc | 1734 | { |
be391dca | 1735 | #if HAVE_POSIX_MADVISE |
b315ab21 | 1736 | posix_madvise (info->map_addr, info->map_len, POSIX_MADV_WILLNEED); |
be391dca | 1737 | #endif |
dce234bc PP |
1738 | return; |
1739 | } | |
1740 | } | |
1741 | #endif | |
1742 | ||
1743 | /* If we get here, we are a normal, not-compressed section. */ | |
1744 | info->buffer = buf | |
1745 | = obstack_alloc (&objfile->objfile_obstack, info->size); | |
1746 | ||
1747 | /* When debugging .o files, we may need to apply relocations; see | |
1748 | http://sourceware.org/ml/gdb-patches/2002-04/msg00136.html . | |
1749 | We never compress sections in .o files, so we only need to | |
1750 | try this when the section is not compressed. */ | |
ac8035ab | 1751 | retbuf = symfile_relocate_debug_section (objfile, sectp, buf); |
dce234bc PP |
1752 | if (retbuf != NULL) |
1753 | { | |
1754 | info->buffer = retbuf; | |
1755 | return; | |
1756 | } | |
1757 | ||
1758 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 | |
1759 | || bfd_bread (buf, info->size, abfd) != info->size) | |
1760 | error (_("Dwarf Error: Can't read DWARF data from '%s'"), | |
1761 | bfd_get_filename (abfd)); | |
1762 | } | |
1763 | ||
9e0ac564 TT |
1764 | /* A helper function that returns the size of a section in a safe way. |
1765 | If you are positive that the section has been read before using the | |
1766 | size, then it is safe to refer to the dwarf2_section_info object's | |
1767 | "size" field directly. In other cases, you must call this | |
1768 | function, because for compressed sections the size field is not set | |
1769 | correctly until the section has been read. */ | |
1770 | ||
1771 | static bfd_size_type | |
1772 | dwarf2_section_size (struct objfile *objfile, | |
1773 | struct dwarf2_section_info *info) | |
1774 | { | |
1775 | if (!info->readin) | |
1776 | dwarf2_read_section (objfile, info); | |
1777 | return info->size; | |
1778 | } | |
1779 | ||
dce234bc | 1780 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 1781 | SECTION_NAME. */ |
af34e669 | 1782 | |
dce234bc | 1783 | void |
3017a003 TG |
1784 | dwarf2_get_section_info (struct objfile *objfile, |
1785 | enum dwarf2_section_enum sect, | |
dce234bc PP |
1786 | asection **sectp, gdb_byte **bufp, |
1787 | bfd_size_type *sizep) | |
1788 | { | |
1789 | struct dwarf2_per_objfile *data | |
1790 | = objfile_data (objfile, dwarf2_objfile_data_key); | |
1791 | struct dwarf2_section_info *info; | |
a3b2a86b TT |
1792 | |
1793 | /* We may see an objfile without any DWARF, in which case we just | |
1794 | return nothing. */ | |
1795 | if (data == NULL) | |
1796 | { | |
1797 | *sectp = NULL; | |
1798 | *bufp = NULL; | |
1799 | *sizep = 0; | |
1800 | return; | |
1801 | } | |
3017a003 TG |
1802 | switch (sect) |
1803 | { | |
1804 | case DWARF2_DEBUG_FRAME: | |
1805 | info = &data->frame; | |
1806 | break; | |
1807 | case DWARF2_EH_FRAME: | |
1808 | info = &data->eh_frame; | |
1809 | break; | |
1810 | default: | |
1811 | gdb_assert_not_reached ("unexpected section"); | |
1812 | } | |
dce234bc | 1813 | |
9e0ac564 | 1814 | dwarf2_read_section (objfile, info); |
dce234bc PP |
1815 | |
1816 | *sectp = info->asection; | |
1817 | *bufp = info->buffer; | |
1818 | *sizep = info->size; | |
1819 | } | |
1820 | ||
9291a0cd | 1821 | \f |
7b9f3c50 DE |
1822 | /* DWARF quick_symbols_functions support. */ |
1823 | ||
1824 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
1825 | unique line tables, so we maintain a separate table of all .debug_line | |
1826 | derived entries to support the sharing. | |
1827 | All the quick functions need is the list of file names. We discard the | |
1828 | line_header when we're done and don't need to record it here. */ | |
1829 | struct quick_file_names | |
1830 | { | |
1831 | /* The offset in .debug_line of the line table. We hash on this. */ | |
1832 | unsigned int offset; | |
1833 | ||
1834 | /* The number of entries in file_names, real_names. */ | |
1835 | unsigned int num_file_names; | |
1836 | ||
1837 | /* The file names from the line table, after being run through | |
1838 | file_full_name. */ | |
1839 | const char **file_names; | |
1840 | ||
1841 | /* The file names from the line table after being run through | |
1842 | gdb_realpath. These are computed lazily. */ | |
1843 | const char **real_names; | |
1844 | }; | |
1845 | ||
1846 | /* When using the index (and thus not using psymtabs), each CU has an | |
1847 | object of this type. This is used to hold information needed by | |
1848 | the various "quick" methods. */ | |
1849 | struct dwarf2_per_cu_quick_data | |
1850 | { | |
1851 | /* The file table. This can be NULL if there was no file table | |
1852 | or it's currently not read in. | |
1853 | NOTE: This points into dwarf2_per_objfile->quick_file_names_table. */ | |
1854 | struct quick_file_names *file_names; | |
1855 | ||
1856 | /* The corresponding symbol table. This is NULL if symbols for this | |
1857 | CU have not yet been read. */ | |
1858 | struct symtab *symtab; | |
1859 | ||
1860 | /* A temporary mark bit used when iterating over all CUs in | |
1861 | expand_symtabs_matching. */ | |
1862 | unsigned int mark : 1; | |
1863 | ||
1864 | /* True if we've tried to read the file table and found there isn't one. | |
1865 | There will be no point in trying to read it again next time. */ | |
1866 | unsigned int no_file_data : 1; | |
1867 | }; | |
1868 | ||
1869 | /* Hash function for a quick_file_names. */ | |
1870 | ||
1871 | static hashval_t | |
1872 | hash_file_name_entry (const void *e) | |
1873 | { | |
1874 | const struct quick_file_names *file_data = e; | |
1875 | ||
1876 | return file_data->offset; | |
1877 | } | |
1878 | ||
1879 | /* Equality function for a quick_file_names. */ | |
1880 | ||
1881 | static int | |
1882 | eq_file_name_entry (const void *a, const void *b) | |
1883 | { | |
1884 | const struct quick_file_names *ea = a; | |
1885 | const struct quick_file_names *eb = b; | |
1886 | ||
1887 | return ea->offset == eb->offset; | |
1888 | } | |
1889 | ||
1890 | /* Delete function for a quick_file_names. */ | |
1891 | ||
1892 | static void | |
1893 | delete_file_name_entry (void *e) | |
1894 | { | |
1895 | struct quick_file_names *file_data = e; | |
1896 | int i; | |
1897 | ||
1898 | for (i = 0; i < file_data->num_file_names; ++i) | |
1899 | { | |
1900 | xfree ((void*) file_data->file_names[i]); | |
1901 | if (file_data->real_names) | |
1902 | xfree ((void*) file_data->real_names[i]); | |
1903 | } | |
1904 | ||
1905 | /* The space for the struct itself lives on objfile_obstack, | |
1906 | so we don't free it here. */ | |
1907 | } | |
1908 | ||
1909 | /* Create a quick_file_names hash table. */ | |
1910 | ||
1911 | static htab_t | |
1912 | create_quick_file_names_table (unsigned int nr_initial_entries) | |
1913 | { | |
1914 | return htab_create_alloc (nr_initial_entries, | |
1915 | hash_file_name_entry, eq_file_name_entry, | |
1916 | delete_file_name_entry, xcalloc, xfree); | |
1917 | } | |
9291a0cd | 1918 | |
918dd910 JK |
1919 | /* Read in PER_CU->CU. This function is unrelated to symtabs, symtab would |
1920 | have to be created afterwards. You should call age_cached_comp_units after | |
1921 | processing PER_CU->CU. dw2_setup must have been already called. */ | |
1922 | ||
1923 | static void | |
1924 | load_cu (struct dwarf2_per_cu_data *per_cu) | |
1925 | { | |
3019eac3 | 1926 | if (per_cu->is_debug_types) |
e5fe5e75 | 1927 | load_full_type_unit (per_cu); |
918dd910 | 1928 | else |
a0f42c21 | 1929 | load_full_comp_unit (per_cu); |
918dd910 | 1930 | |
918dd910 | 1931 | gdb_assert (per_cu->cu != NULL); |
2dc860c0 DE |
1932 | |
1933 | dwarf2_find_base_address (per_cu->cu->dies, per_cu->cu); | |
918dd910 JK |
1934 | } |
1935 | ||
a0f42c21 | 1936 | /* Read in the symbols for PER_CU. */ |
2fdf6df6 | 1937 | |
9291a0cd | 1938 | static void |
a0f42c21 | 1939 | dw2_do_instantiate_symtab (struct dwarf2_per_cu_data *per_cu) |
9291a0cd TT |
1940 | { |
1941 | struct cleanup *back_to; | |
1942 | ||
1943 | back_to = make_cleanup (dwarf2_release_queue, NULL); | |
1944 | ||
a0f42c21 | 1945 | queue_comp_unit (per_cu); |
9291a0cd | 1946 | |
918dd910 | 1947 | load_cu (per_cu); |
9291a0cd | 1948 | |
a0f42c21 | 1949 | process_queue (); |
9291a0cd TT |
1950 | |
1951 | /* Age the cache, releasing compilation units that have not | |
1952 | been used recently. */ | |
1953 | age_cached_comp_units (); | |
1954 | ||
1955 | do_cleanups (back_to); | |
1956 | } | |
1957 | ||
1958 | /* Ensure that the symbols for PER_CU have been read in. OBJFILE is | |
1959 | the objfile from which this CU came. Returns the resulting symbol | |
1960 | table. */ | |
2fdf6df6 | 1961 | |
9291a0cd | 1962 | static struct symtab * |
a0f42c21 | 1963 | dw2_instantiate_symtab (struct dwarf2_per_cu_data *per_cu) |
9291a0cd TT |
1964 | { |
1965 | if (!per_cu->v.quick->symtab) | |
1966 | { | |
1967 | struct cleanup *back_to = make_cleanup (free_cached_comp_units, NULL); | |
1968 | increment_reading_symtab (); | |
a0f42c21 | 1969 | dw2_do_instantiate_symtab (per_cu); |
9291a0cd TT |
1970 | do_cleanups (back_to); |
1971 | } | |
1972 | return per_cu->v.quick->symtab; | |
1973 | } | |
1974 | ||
1fd400ff | 1975 | /* Return the CU given its index. */ |
2fdf6df6 | 1976 | |
1fd400ff TT |
1977 | static struct dwarf2_per_cu_data * |
1978 | dw2_get_cu (int index) | |
1979 | { | |
1980 | if (index >= dwarf2_per_objfile->n_comp_units) | |
1981 | { | |
1982 | index -= dwarf2_per_objfile->n_comp_units; | |
d467dd73 | 1983 | return dwarf2_per_objfile->all_type_units[index]; |
1fd400ff TT |
1984 | } |
1985 | return dwarf2_per_objfile->all_comp_units[index]; | |
1986 | } | |
1987 | ||
9291a0cd TT |
1988 | /* A helper function that knows how to read a 64-bit value in a way |
1989 | that doesn't make gdb die. Returns 1 if the conversion went ok, 0 | |
1990 | otherwise. */ | |
2fdf6df6 | 1991 | |
9291a0cd TT |
1992 | static int |
1993 | extract_cu_value (const char *bytes, ULONGEST *result) | |
1994 | { | |
1995 | if (sizeof (ULONGEST) < 8) | |
1996 | { | |
1997 | int i; | |
1998 | ||
1999 | /* Ignore the upper 4 bytes if they are all zero. */ | |
2000 | for (i = 0; i < 4; ++i) | |
2001 | if (bytes[i + 4] != 0) | |
2002 | return 0; | |
2003 | ||
2004 | *result = extract_unsigned_integer (bytes, 4, BFD_ENDIAN_LITTLE); | |
2005 | } | |
2006 | else | |
2007 | *result = extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
2008 | return 1; | |
2009 | } | |
2010 | ||
2011 | /* Read the CU list from the mapped index, and use it to create all | |
2012 | the CU objects for this objfile. Return 0 if something went wrong, | |
2013 | 1 if everything went ok. */ | |
2fdf6df6 | 2014 | |
9291a0cd | 2015 | static int |
1fd400ff TT |
2016 | create_cus_from_index (struct objfile *objfile, const gdb_byte *cu_list, |
2017 | offset_type cu_list_elements) | |
9291a0cd TT |
2018 | { |
2019 | offset_type i; | |
9291a0cd TT |
2020 | |
2021 | dwarf2_per_objfile->n_comp_units = cu_list_elements / 2; | |
2022 | dwarf2_per_objfile->all_comp_units | |
2023 | = obstack_alloc (&objfile->objfile_obstack, | |
2024 | dwarf2_per_objfile->n_comp_units | |
2025 | * sizeof (struct dwarf2_per_cu_data *)); | |
2026 | ||
2027 | for (i = 0; i < cu_list_elements; i += 2) | |
2028 | { | |
2029 | struct dwarf2_per_cu_data *the_cu; | |
2030 | ULONGEST offset, length; | |
2031 | ||
2032 | if (!extract_cu_value (cu_list, &offset) | |
2033 | || !extract_cu_value (cu_list + 8, &length)) | |
2034 | return 0; | |
2035 | cu_list += 2 * 8; | |
2036 | ||
2037 | the_cu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2038 | struct dwarf2_per_cu_data); | |
b64f50a1 | 2039 | the_cu->offset.sect_off = offset; |
9291a0cd TT |
2040 | the_cu->length = length; |
2041 | the_cu->objfile = objfile; | |
3019eac3 | 2042 | the_cu->info_or_types_section = &dwarf2_per_objfile->info; |
9291a0cd TT |
2043 | the_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
2044 | struct dwarf2_per_cu_quick_data); | |
2045 | dwarf2_per_objfile->all_comp_units[i / 2] = the_cu; | |
2046 | } | |
2047 | ||
2048 | return 1; | |
2049 | } | |
2050 | ||
1fd400ff | 2051 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 2052 | |
1fd400ff | 2053 | static int |
673bfd45 | 2054 | create_signatured_type_table_from_index (struct objfile *objfile, |
8b70b953 | 2055 | struct dwarf2_section_info *section, |
673bfd45 DE |
2056 | const gdb_byte *bytes, |
2057 | offset_type elements) | |
1fd400ff TT |
2058 | { |
2059 | offset_type i; | |
673bfd45 | 2060 | htab_t sig_types_hash; |
1fd400ff | 2061 | |
d467dd73 DE |
2062 | dwarf2_per_objfile->n_type_units = elements / 3; |
2063 | dwarf2_per_objfile->all_type_units | |
1fd400ff | 2064 | = obstack_alloc (&objfile->objfile_obstack, |
d467dd73 | 2065 | dwarf2_per_objfile->n_type_units |
1fd400ff TT |
2066 | * sizeof (struct dwarf2_per_cu_data *)); |
2067 | ||
673bfd45 | 2068 | sig_types_hash = allocate_signatured_type_table (objfile); |
1fd400ff TT |
2069 | |
2070 | for (i = 0; i < elements; i += 3) | |
2071 | { | |
52dc124a DE |
2072 | struct signatured_type *sig_type; |
2073 | ULONGEST offset, type_offset_in_tu, signature; | |
1fd400ff TT |
2074 | void **slot; |
2075 | ||
2076 | if (!extract_cu_value (bytes, &offset) | |
52dc124a | 2077 | || !extract_cu_value (bytes + 8, &type_offset_in_tu)) |
1fd400ff TT |
2078 | return 0; |
2079 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); | |
2080 | bytes += 3 * 8; | |
2081 | ||
52dc124a | 2082 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
1fd400ff | 2083 | struct signatured_type); |
52dc124a | 2084 | sig_type->signature = signature; |
3019eac3 DE |
2085 | sig_type->type_offset_in_tu.cu_off = type_offset_in_tu; |
2086 | sig_type->per_cu.is_debug_types = 1; | |
2087 | sig_type->per_cu.info_or_types_section = section; | |
52dc124a DE |
2088 | sig_type->per_cu.offset.sect_off = offset; |
2089 | sig_type->per_cu.objfile = objfile; | |
2090 | sig_type->per_cu.v.quick | |
1fd400ff TT |
2091 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
2092 | struct dwarf2_per_cu_quick_data); | |
2093 | ||
52dc124a DE |
2094 | slot = htab_find_slot (sig_types_hash, sig_type, INSERT); |
2095 | *slot = sig_type; | |
1fd400ff | 2096 | |
52dc124a | 2097 | dwarf2_per_objfile->all_type_units[i / 3] = &sig_type->per_cu; |
1fd400ff TT |
2098 | } |
2099 | ||
673bfd45 | 2100 | dwarf2_per_objfile->signatured_types = sig_types_hash; |
1fd400ff TT |
2101 | |
2102 | return 1; | |
2103 | } | |
2104 | ||
9291a0cd TT |
2105 | /* Read the address map data from the mapped index, and use it to |
2106 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 2107 | |
9291a0cd TT |
2108 | static void |
2109 | create_addrmap_from_index (struct objfile *objfile, struct mapped_index *index) | |
2110 | { | |
2111 | const gdb_byte *iter, *end; | |
2112 | struct obstack temp_obstack; | |
2113 | struct addrmap *mutable_map; | |
2114 | struct cleanup *cleanup; | |
2115 | CORE_ADDR baseaddr; | |
2116 | ||
2117 | obstack_init (&temp_obstack); | |
2118 | cleanup = make_cleanup_obstack_free (&temp_obstack); | |
2119 | mutable_map = addrmap_create_mutable (&temp_obstack); | |
2120 | ||
2121 | iter = index->address_table; | |
2122 | end = iter + index->address_table_size; | |
2123 | ||
2124 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
2125 | ||
2126 | while (iter < end) | |
2127 | { | |
2128 | ULONGEST hi, lo, cu_index; | |
2129 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2130 | iter += 8; | |
2131 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2132 | iter += 8; | |
2133 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
2134 | iter += 4; | |
2135 | ||
2136 | addrmap_set_empty (mutable_map, lo + baseaddr, hi + baseaddr - 1, | |
1fd400ff | 2137 | dw2_get_cu (cu_index)); |
9291a0cd TT |
2138 | } |
2139 | ||
2140 | objfile->psymtabs_addrmap = addrmap_create_fixed (mutable_map, | |
2141 | &objfile->objfile_obstack); | |
2142 | do_cleanups (cleanup); | |
2143 | } | |
2144 | ||
59d7bcaf JK |
2145 | /* The hash function for strings in the mapped index. This is the same as |
2146 | SYMBOL_HASH_NEXT, but we keep a separate copy to maintain control over the | |
2147 | implementation. This is necessary because the hash function is tied to the | |
2148 | format of the mapped index file. The hash values do not have to match with | |
559a7a62 JK |
2149 | SYMBOL_HASH_NEXT. |
2150 | ||
2151 | Use INT_MAX for INDEX_VERSION if you generate the current index format. */ | |
2fdf6df6 | 2152 | |
9291a0cd | 2153 | static hashval_t |
559a7a62 | 2154 | mapped_index_string_hash (int index_version, const void *p) |
9291a0cd TT |
2155 | { |
2156 | const unsigned char *str = (const unsigned char *) p; | |
2157 | hashval_t r = 0; | |
2158 | unsigned char c; | |
2159 | ||
2160 | while ((c = *str++) != 0) | |
559a7a62 JK |
2161 | { |
2162 | if (index_version >= 5) | |
2163 | c = tolower (c); | |
2164 | r = r * 67 + c - 113; | |
2165 | } | |
9291a0cd TT |
2166 | |
2167 | return r; | |
2168 | } | |
2169 | ||
2170 | /* Find a slot in the mapped index INDEX for the object named NAME. | |
2171 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
2172 | constant pool and return 1. If NAME cannot be found, return 0. */ | |
2fdf6df6 | 2173 | |
9291a0cd TT |
2174 | static int |
2175 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, | |
2176 | offset_type **vec_out) | |
2177 | { | |
0cf03b49 JK |
2178 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2179 | offset_type hash; | |
9291a0cd | 2180 | offset_type slot, step; |
559a7a62 | 2181 | int (*cmp) (const char *, const char *); |
9291a0cd | 2182 | |
0cf03b49 JK |
2183 | if (current_language->la_language == language_cplus |
2184 | || current_language->la_language == language_java | |
2185 | || current_language->la_language == language_fortran) | |
2186 | { | |
2187 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
2188 | not contain any. */ | |
2189 | const char *paren = strchr (name, '('); | |
2190 | ||
2191 | if (paren) | |
2192 | { | |
2193 | char *dup; | |
2194 | ||
2195 | dup = xmalloc (paren - name + 1); | |
2196 | memcpy (dup, name, paren - name); | |
2197 | dup[paren - name] = 0; | |
2198 | ||
2199 | make_cleanup (xfree, dup); | |
2200 | name = dup; | |
2201 | } | |
2202 | } | |
2203 | ||
559a7a62 | 2204 | /* Index version 4 did not support case insensitive searches. But the |
feea76c2 | 2205 | indices for case insensitive languages are built in lowercase, therefore |
559a7a62 JK |
2206 | simulate our NAME being searched is also lowercased. */ |
2207 | hash = mapped_index_string_hash ((index->version == 4 | |
2208 | && case_sensitivity == case_sensitive_off | |
2209 | ? 5 : index->version), | |
2210 | name); | |
2211 | ||
3876f04e DE |
2212 | slot = hash & (index->symbol_table_slots - 1); |
2213 | step = ((hash * 17) & (index->symbol_table_slots - 1)) | 1; | |
559a7a62 | 2214 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
2215 | |
2216 | for (;;) | |
2217 | { | |
2218 | /* Convert a slot number to an offset into the table. */ | |
2219 | offset_type i = 2 * slot; | |
2220 | const char *str; | |
3876f04e | 2221 | if (index->symbol_table[i] == 0 && index->symbol_table[i + 1] == 0) |
0cf03b49 JK |
2222 | { |
2223 | do_cleanups (back_to); | |
2224 | return 0; | |
2225 | } | |
9291a0cd | 2226 | |
3876f04e | 2227 | str = index->constant_pool + MAYBE_SWAP (index->symbol_table[i]); |
559a7a62 | 2228 | if (!cmp (name, str)) |
9291a0cd TT |
2229 | { |
2230 | *vec_out = (offset_type *) (index->constant_pool | |
3876f04e | 2231 | + MAYBE_SWAP (index->symbol_table[i + 1])); |
0cf03b49 | 2232 | do_cleanups (back_to); |
9291a0cd TT |
2233 | return 1; |
2234 | } | |
2235 | ||
3876f04e | 2236 | slot = (slot + step) & (index->symbol_table_slots - 1); |
9291a0cd TT |
2237 | } |
2238 | } | |
2239 | ||
2240 | /* Read the index file. If everything went ok, initialize the "quick" | |
2241 | elements of all the CUs and return 1. Otherwise, return 0. */ | |
2fdf6df6 | 2242 | |
9291a0cd TT |
2243 | static int |
2244 | dwarf2_read_index (struct objfile *objfile) | |
2245 | { | |
9291a0cd TT |
2246 | char *addr; |
2247 | struct mapped_index *map; | |
b3b272e1 | 2248 | offset_type *metadata; |
ac0b195c KW |
2249 | const gdb_byte *cu_list; |
2250 | const gdb_byte *types_list = NULL; | |
2251 | offset_type version, cu_list_elements; | |
2252 | offset_type types_list_elements = 0; | |
1fd400ff | 2253 | int i; |
9291a0cd | 2254 | |
9e0ac564 | 2255 | if (dwarf2_section_empty_p (&dwarf2_per_objfile->gdb_index)) |
9291a0cd | 2256 | return 0; |
82430852 JK |
2257 | |
2258 | /* Older elfutils strip versions could keep the section in the main | |
2259 | executable while splitting it for the separate debug info file. */ | |
2260 | if ((bfd_get_file_flags (dwarf2_per_objfile->gdb_index.asection) | |
2261 | & SEC_HAS_CONTENTS) == 0) | |
2262 | return 0; | |
2263 | ||
9291a0cd TT |
2264 | dwarf2_read_section (objfile, &dwarf2_per_objfile->gdb_index); |
2265 | ||
2266 | addr = dwarf2_per_objfile->gdb_index.buffer; | |
2267 | /* Version check. */ | |
1fd400ff | 2268 | version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 2269 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 2270 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 2271 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 2272 | indices. */ |
831adc1f | 2273 | if (version < 4) |
481860b3 GB |
2274 | { |
2275 | static int warning_printed = 0; | |
2276 | if (!warning_printed) | |
2277 | { | |
2278 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2279 | objfile->name); | |
2280 | warning_printed = 1; | |
2281 | } | |
2282 | return 0; | |
2283 | } | |
2284 | /* Index version 4 uses a different hash function than index version | |
2285 | 5 and later. | |
2286 | ||
2287 | Versions earlier than 6 did not emit psymbols for inlined | |
2288 | functions. Using these files will cause GDB not to be able to | |
2289 | set breakpoints on inlined functions by name, so we ignore these | |
2290 | indices unless the --use-deprecated-index-sections command line | |
2291 | option was supplied. */ | |
2292 | if (version < 6 && !use_deprecated_index_sections) | |
2293 | { | |
2294 | static int warning_printed = 0; | |
2295 | if (!warning_printed) | |
2296 | { | |
2297 | warning (_("Skipping deprecated .gdb_index section in %s, pass " | |
2298 | "--use-deprecated-index-sections to use them anyway"), | |
2299 | objfile->name); | |
2300 | warning_printed = 1; | |
2301 | } | |
2302 | return 0; | |
2303 | } | |
2304 | /* Indexes with higher version than the one supported by GDB may be no | |
594e8718 | 2305 | longer backward compatible. */ |
481860b3 | 2306 | if (version > 6) |
594e8718 | 2307 | return 0; |
9291a0cd TT |
2308 | |
2309 | map = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct mapped_index); | |
559a7a62 | 2310 | map->version = version; |
b3b272e1 | 2311 | map->total_size = dwarf2_per_objfile->gdb_index.size; |
9291a0cd TT |
2312 | |
2313 | metadata = (offset_type *) (addr + sizeof (offset_type)); | |
1fd400ff TT |
2314 | |
2315 | i = 0; | |
2316 | cu_list = addr + MAYBE_SWAP (metadata[i]); | |
2317 | cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
9291a0cd | 2318 | / 8); |
1fd400ff TT |
2319 | ++i; |
2320 | ||
987d643c TT |
2321 | types_list = addr + MAYBE_SWAP (metadata[i]); |
2322 | types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
2323 | - MAYBE_SWAP (metadata[i])) | |
2324 | / 8); | |
2325 | ++i; | |
1fd400ff TT |
2326 | |
2327 | map->address_table = addr + MAYBE_SWAP (metadata[i]); | |
2328 | map->address_table_size = (MAYBE_SWAP (metadata[i + 1]) | |
2329 | - MAYBE_SWAP (metadata[i])); | |
2330 | ++i; | |
2331 | ||
3876f04e DE |
2332 | map->symbol_table = (offset_type *) (addr + MAYBE_SWAP (metadata[i])); |
2333 | map->symbol_table_slots = ((MAYBE_SWAP (metadata[i + 1]) | |
2334 | - MAYBE_SWAP (metadata[i])) | |
2335 | / (2 * sizeof (offset_type))); | |
1fd400ff | 2336 | ++i; |
9291a0cd | 2337 | |
1fd400ff TT |
2338 | map->constant_pool = addr + MAYBE_SWAP (metadata[i]); |
2339 | ||
0fefef59 DE |
2340 | /* Don't use the index if it's empty. */ |
2341 | if (map->symbol_table_slots == 0) | |
2342 | return 0; | |
2343 | ||
1fd400ff TT |
2344 | if (!create_cus_from_index (objfile, cu_list, cu_list_elements)) |
2345 | return 0; | |
2346 | ||
8b70b953 TT |
2347 | if (types_list_elements) |
2348 | { | |
2349 | struct dwarf2_section_info *section; | |
2350 | ||
2351 | /* We can only handle a single .debug_types when we have an | |
2352 | index. */ | |
2353 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) != 1) | |
2354 | return 0; | |
2355 | ||
2356 | section = VEC_index (dwarf2_section_info_def, | |
2357 | dwarf2_per_objfile->types, 0); | |
2358 | ||
2359 | if (!create_signatured_type_table_from_index (objfile, section, | |
2360 | types_list, | |
2361 | types_list_elements)) | |
2362 | return 0; | |
2363 | } | |
9291a0cd TT |
2364 | |
2365 | create_addrmap_from_index (objfile, map); | |
2366 | ||
2367 | dwarf2_per_objfile->index_table = map; | |
2368 | dwarf2_per_objfile->using_index = 1; | |
7b9f3c50 DE |
2369 | dwarf2_per_objfile->quick_file_names_table = |
2370 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd TT |
2371 | |
2372 | return 1; | |
2373 | } | |
2374 | ||
2375 | /* A helper for the "quick" functions which sets the global | |
2376 | dwarf2_per_objfile according to OBJFILE. */ | |
2fdf6df6 | 2377 | |
9291a0cd TT |
2378 | static void |
2379 | dw2_setup (struct objfile *objfile) | |
2380 | { | |
2381 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
2382 | gdb_assert (dwarf2_per_objfile); | |
2383 | } | |
2384 | ||
dee91e82 | 2385 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 2386 | |
dee91e82 DE |
2387 | static void |
2388 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
2389 | gdb_byte *info_ptr, | |
2390 | struct die_info *comp_unit_die, | |
2391 | int has_children, | |
2392 | void *data) | |
9291a0cd | 2393 | { |
dee91e82 DE |
2394 | struct dwarf2_cu *cu = reader->cu; |
2395 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; | |
2396 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
7b9f3c50 | 2397 | struct line_header *lh; |
9291a0cd | 2398 | struct attribute *attr; |
dee91e82 | 2399 | int i; |
9ff913ba | 2400 | unsigned int bytes_read; |
9291a0cd | 2401 | char *name, *comp_dir; |
7b9f3c50 DE |
2402 | void **slot; |
2403 | struct quick_file_names *qfn; | |
2404 | unsigned int line_offset; | |
9291a0cd | 2405 | |
7b9f3c50 DE |
2406 | lh = NULL; |
2407 | slot = NULL; | |
2408 | line_offset = 0; | |
dee91e82 DE |
2409 | |
2410 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); | |
9291a0cd TT |
2411 | if (attr) |
2412 | { | |
7b9f3c50 DE |
2413 | struct quick_file_names find_entry; |
2414 | ||
2415 | line_offset = DW_UNSND (attr); | |
2416 | ||
2417 | /* We may have already read in this line header (TU line header sharing). | |
2418 | If we have we're done. */ | |
2419 | find_entry.offset = line_offset; | |
2420 | slot = htab_find_slot (dwarf2_per_objfile->quick_file_names_table, | |
2421 | &find_entry, INSERT); | |
2422 | if (*slot != NULL) | |
2423 | { | |
7b9f3c50 | 2424 | this_cu->v.quick->file_names = *slot; |
dee91e82 | 2425 | return; |
7b9f3c50 DE |
2426 | } |
2427 | ||
3019eac3 | 2428 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
2429 | } |
2430 | if (lh == NULL) | |
2431 | { | |
7b9f3c50 | 2432 | this_cu->v.quick->no_file_data = 1; |
dee91e82 | 2433 | return; |
9291a0cd TT |
2434 | } |
2435 | ||
7b9f3c50 DE |
2436 | qfn = obstack_alloc (&objfile->objfile_obstack, sizeof (*qfn)); |
2437 | qfn->offset = line_offset; | |
2438 | gdb_assert (slot != NULL); | |
2439 | *slot = qfn; | |
9291a0cd | 2440 | |
dee91e82 | 2441 | find_file_and_directory (comp_unit_die, cu, &name, &comp_dir); |
9291a0cd | 2442 | |
7b9f3c50 DE |
2443 | qfn->num_file_names = lh->num_file_names; |
2444 | qfn->file_names = obstack_alloc (&objfile->objfile_obstack, | |
2445 | lh->num_file_names * sizeof (char *)); | |
9291a0cd | 2446 | for (i = 0; i < lh->num_file_names; ++i) |
7b9f3c50 DE |
2447 | qfn->file_names[i] = file_full_name (i + 1, lh, comp_dir); |
2448 | qfn->real_names = NULL; | |
9291a0cd | 2449 | |
7b9f3c50 | 2450 | free_line_header (lh); |
7b9f3c50 DE |
2451 | |
2452 | this_cu->v.quick->file_names = qfn; | |
dee91e82 DE |
2453 | } |
2454 | ||
2455 | /* A helper for the "quick" functions which attempts to read the line | |
2456 | table for THIS_CU. */ | |
2457 | ||
2458 | static struct quick_file_names * | |
2459 | dw2_get_file_names (struct objfile *objfile, | |
2460 | struct dwarf2_per_cu_data *this_cu) | |
2461 | { | |
2462 | if (this_cu->v.quick->file_names != NULL) | |
2463 | return this_cu->v.quick->file_names; | |
2464 | /* If we know there is no line data, no point in looking again. */ | |
2465 | if (this_cu->v.quick->no_file_data) | |
2466 | return NULL; | |
2467 | ||
3019eac3 DE |
2468 | /* If DWO files are in use, we can still find the DW_AT_stmt_list attribute |
2469 | in the stub for CUs, there's is no need to lookup the DWO file. | |
2470 | However, that's not the case for TUs where DW_AT_stmt_list lives in the | |
2471 | DWO file. */ | |
2472 | if (this_cu->is_debug_types) | |
fd820528 | 2473 | init_cutu_and_read_dies (this_cu, 0, 0, dw2_get_file_names_reader, NULL); |
3019eac3 DE |
2474 | else |
2475 | init_cutu_and_read_dies_simple (this_cu, dw2_get_file_names_reader, NULL); | |
dee91e82 DE |
2476 | |
2477 | if (this_cu->v.quick->no_file_data) | |
2478 | return NULL; | |
2479 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
2480 | } |
2481 | ||
2482 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 2483 | real path for a given file name from the line table. */ |
2fdf6df6 | 2484 | |
9291a0cd | 2485 | static const char * |
7b9f3c50 DE |
2486 | dw2_get_real_path (struct objfile *objfile, |
2487 | struct quick_file_names *qfn, int index) | |
9291a0cd | 2488 | { |
7b9f3c50 DE |
2489 | if (qfn->real_names == NULL) |
2490 | qfn->real_names = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
2491 | qfn->num_file_names, sizeof (char *)); | |
9291a0cd | 2492 | |
7b9f3c50 DE |
2493 | if (qfn->real_names[index] == NULL) |
2494 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]); | |
9291a0cd | 2495 | |
7b9f3c50 | 2496 | return qfn->real_names[index]; |
9291a0cd TT |
2497 | } |
2498 | ||
2499 | static struct symtab * | |
2500 | dw2_find_last_source_symtab (struct objfile *objfile) | |
2501 | { | |
2502 | int index; | |
ae2de4f8 | 2503 | |
9291a0cd TT |
2504 | dw2_setup (objfile); |
2505 | index = dwarf2_per_objfile->n_comp_units - 1; | |
a0f42c21 | 2506 | return dw2_instantiate_symtab (dw2_get_cu (index)); |
9291a0cd TT |
2507 | } |
2508 | ||
7b9f3c50 DE |
2509 | /* Traversal function for dw2_forget_cached_source_info. */ |
2510 | ||
2511 | static int | |
2512 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 2513 | { |
7b9f3c50 | 2514 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 2515 | |
7b9f3c50 | 2516 | if (file_data->real_names) |
9291a0cd | 2517 | { |
7b9f3c50 | 2518 | int i; |
9291a0cd | 2519 | |
7b9f3c50 | 2520 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 2521 | { |
7b9f3c50 DE |
2522 | xfree ((void*) file_data->real_names[i]); |
2523 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
2524 | } |
2525 | } | |
7b9f3c50 DE |
2526 | |
2527 | return 1; | |
2528 | } | |
2529 | ||
2530 | static void | |
2531 | dw2_forget_cached_source_info (struct objfile *objfile) | |
2532 | { | |
2533 | dw2_setup (objfile); | |
2534 | ||
2535 | htab_traverse_noresize (dwarf2_per_objfile->quick_file_names_table, | |
2536 | dw2_free_cached_file_names, NULL); | |
9291a0cd TT |
2537 | } |
2538 | ||
f8eba3c6 TT |
2539 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
2540 | the symtabs and calls the iterator. */ | |
2541 | ||
2542 | static int | |
2543 | dw2_map_expand_apply (struct objfile *objfile, | |
2544 | struct dwarf2_per_cu_data *per_cu, | |
2545 | const char *name, | |
2546 | const char *full_path, const char *real_path, | |
2547 | int (*callback) (struct symtab *, void *), | |
2548 | void *data) | |
2549 | { | |
2550 | struct symtab *last_made = objfile->symtabs; | |
2551 | ||
2552 | /* Don't visit already-expanded CUs. */ | |
2553 | if (per_cu->v.quick->symtab) | |
2554 | return 0; | |
2555 | ||
2556 | /* This may expand more than one symtab, and we want to iterate over | |
2557 | all of them. */ | |
a0f42c21 | 2558 | dw2_instantiate_symtab (per_cu); |
f8eba3c6 TT |
2559 | |
2560 | return iterate_over_some_symtabs (name, full_path, real_path, callback, data, | |
2561 | objfile->symtabs, last_made); | |
2562 | } | |
2563 | ||
2564 | /* Implementation of the map_symtabs_matching_filename method. */ | |
2565 | ||
9291a0cd | 2566 | static int |
f8eba3c6 TT |
2567 | dw2_map_symtabs_matching_filename (struct objfile *objfile, const char *name, |
2568 | const char *full_path, const char *real_path, | |
2569 | int (*callback) (struct symtab *, void *), | |
2570 | void *data) | |
9291a0cd TT |
2571 | { |
2572 | int i; | |
c011a4f4 | 2573 | const char *name_basename = lbasename (name); |
4aac40c8 TT |
2574 | int name_len = strlen (name); |
2575 | int is_abs = IS_ABSOLUTE_PATH (name); | |
9291a0cd TT |
2576 | |
2577 | dw2_setup (objfile); | |
ae2de4f8 | 2578 | |
1fd400ff | 2579 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
d467dd73 | 2580 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd TT |
2581 | { |
2582 | int j; | |
e254ef6a | 2583 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
7b9f3c50 | 2584 | struct quick_file_names *file_data; |
9291a0cd | 2585 | |
3d7bb9d9 | 2586 | /* We only need to look at symtabs not already expanded. */ |
e254ef6a | 2587 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
2588 | continue; |
2589 | ||
7b9f3c50 DE |
2590 | file_data = dw2_get_file_names (objfile, per_cu); |
2591 | if (file_data == NULL) | |
9291a0cd TT |
2592 | continue; |
2593 | ||
7b9f3c50 | 2594 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 2595 | { |
7b9f3c50 | 2596 | const char *this_name = file_data->file_names[j]; |
9291a0cd | 2597 | |
4aac40c8 TT |
2598 | if (FILENAME_CMP (name, this_name) == 0 |
2599 | || (!is_abs && compare_filenames_for_search (this_name, | |
2600 | name, name_len))) | |
9291a0cd | 2601 | { |
f8eba3c6 TT |
2602 | if (dw2_map_expand_apply (objfile, per_cu, |
2603 | name, full_path, real_path, | |
2604 | callback, data)) | |
2605 | return 1; | |
4aac40c8 | 2606 | } |
9291a0cd | 2607 | |
c011a4f4 DE |
2608 | /* Before we invoke realpath, which can get expensive when many |
2609 | files are involved, do a quick comparison of the basenames. */ | |
2610 | if (! basenames_may_differ | |
2611 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
2612 | continue; | |
2613 | ||
9291a0cd TT |
2614 | if (full_path != NULL) |
2615 | { | |
7b9f3c50 DE |
2616 | const char *this_real_name = dw2_get_real_path (objfile, |
2617 | file_data, j); | |
9291a0cd | 2618 | |
7b9f3c50 | 2619 | if (this_real_name != NULL |
4aac40c8 TT |
2620 | && (FILENAME_CMP (full_path, this_real_name) == 0 |
2621 | || (!is_abs | |
2622 | && compare_filenames_for_search (this_real_name, | |
2623 | name, name_len)))) | |
9291a0cd | 2624 | { |
f8eba3c6 TT |
2625 | if (dw2_map_expand_apply (objfile, per_cu, |
2626 | name, full_path, real_path, | |
2627 | callback, data)) | |
2628 | return 1; | |
9291a0cd TT |
2629 | } |
2630 | } | |
2631 | ||
2632 | if (real_path != NULL) | |
2633 | { | |
7b9f3c50 DE |
2634 | const char *this_real_name = dw2_get_real_path (objfile, |
2635 | file_data, j); | |
9291a0cd | 2636 | |
7b9f3c50 | 2637 | if (this_real_name != NULL |
4aac40c8 TT |
2638 | && (FILENAME_CMP (real_path, this_real_name) == 0 |
2639 | || (!is_abs | |
2640 | && compare_filenames_for_search (this_real_name, | |
2641 | name, name_len)))) | |
9291a0cd | 2642 | { |
f8eba3c6 TT |
2643 | if (dw2_map_expand_apply (objfile, per_cu, |
2644 | name, full_path, real_path, | |
2645 | callback, data)) | |
2646 | return 1; | |
9291a0cd TT |
2647 | } |
2648 | } | |
2649 | } | |
2650 | } | |
2651 | ||
9291a0cd TT |
2652 | return 0; |
2653 | } | |
2654 | ||
2655 | static struct symtab * | |
2656 | dw2_lookup_symbol (struct objfile *objfile, int block_index, | |
2657 | const char *name, domain_enum domain) | |
2658 | { | |
774b6a14 | 2659 | /* We do all the work in the pre_expand_symtabs_matching hook |
9291a0cd TT |
2660 | instead. */ |
2661 | return NULL; | |
2662 | } | |
2663 | ||
2664 | /* A helper function that expands all symtabs that hold an object | |
2665 | named NAME. */ | |
2fdf6df6 | 2666 | |
9291a0cd TT |
2667 | static void |
2668 | dw2_do_expand_symtabs_matching (struct objfile *objfile, const char *name) | |
2669 | { | |
2670 | dw2_setup (objfile); | |
2671 | ||
ae2de4f8 | 2672 | /* index_table is NULL if OBJF_READNOW. */ |
9291a0cd TT |
2673 | if (dwarf2_per_objfile->index_table) |
2674 | { | |
2675 | offset_type *vec; | |
2676 | ||
2677 | if (find_slot_in_mapped_hash (dwarf2_per_objfile->index_table, | |
2678 | name, &vec)) | |
2679 | { | |
2680 | offset_type i, len = MAYBE_SWAP (*vec); | |
2681 | for (i = 0; i < len; ++i) | |
2682 | { | |
2683 | offset_type cu_index = MAYBE_SWAP (vec[i + 1]); | |
e254ef6a | 2684 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (cu_index); |
1fd400ff | 2685 | |
a0f42c21 | 2686 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
2687 | } |
2688 | } | |
2689 | } | |
2690 | } | |
2691 | ||
774b6a14 TT |
2692 | static void |
2693 | dw2_pre_expand_symtabs_matching (struct objfile *objfile, | |
8903c50d | 2694 | enum block_enum block_kind, const char *name, |
774b6a14 | 2695 | domain_enum domain) |
9291a0cd | 2696 | { |
774b6a14 | 2697 | dw2_do_expand_symtabs_matching (objfile, name); |
9291a0cd TT |
2698 | } |
2699 | ||
2700 | static void | |
2701 | dw2_print_stats (struct objfile *objfile) | |
2702 | { | |
2703 | int i, count; | |
2704 | ||
2705 | dw2_setup (objfile); | |
2706 | count = 0; | |
1fd400ff | 2707 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
d467dd73 | 2708 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 2709 | { |
e254ef6a | 2710 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 2711 | |
e254ef6a | 2712 | if (!per_cu->v.quick->symtab) |
9291a0cd TT |
2713 | ++count; |
2714 | } | |
2715 | printf_filtered (_(" Number of unread CUs: %d\n"), count); | |
2716 | } | |
2717 | ||
2718 | static void | |
2719 | dw2_dump (struct objfile *objfile) | |
2720 | { | |
2721 | /* Nothing worth printing. */ | |
2722 | } | |
2723 | ||
2724 | static void | |
2725 | dw2_relocate (struct objfile *objfile, struct section_offsets *new_offsets, | |
2726 | struct section_offsets *delta) | |
2727 | { | |
2728 | /* There's nothing to relocate here. */ | |
2729 | } | |
2730 | ||
2731 | static void | |
2732 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
2733 | const char *func_name) | |
2734 | { | |
2735 | dw2_do_expand_symtabs_matching (objfile, func_name); | |
2736 | } | |
2737 | ||
2738 | static void | |
2739 | dw2_expand_all_symtabs (struct objfile *objfile) | |
2740 | { | |
2741 | int i; | |
2742 | ||
2743 | dw2_setup (objfile); | |
1fd400ff TT |
2744 | |
2745 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
d467dd73 | 2746 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 2747 | { |
e254ef6a | 2748 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 2749 | |
a0f42c21 | 2750 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
2751 | } |
2752 | } | |
2753 | ||
2754 | static void | |
2755 | dw2_expand_symtabs_with_filename (struct objfile *objfile, | |
2756 | const char *filename) | |
2757 | { | |
2758 | int i; | |
2759 | ||
2760 | dw2_setup (objfile); | |
d4637a04 DE |
2761 | |
2762 | /* We don't need to consider type units here. | |
2763 | This is only called for examining code, e.g. expand_line_sal. | |
2764 | There can be an order of magnitude (or more) more type units | |
2765 | than comp units, and we avoid them if we can. */ | |
2766 | ||
2767 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
9291a0cd TT |
2768 | { |
2769 | int j; | |
e254ef6a | 2770 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
7b9f3c50 | 2771 | struct quick_file_names *file_data; |
9291a0cd | 2772 | |
3d7bb9d9 | 2773 | /* We only need to look at symtabs not already expanded. */ |
e254ef6a | 2774 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
2775 | continue; |
2776 | ||
7b9f3c50 DE |
2777 | file_data = dw2_get_file_names (objfile, per_cu); |
2778 | if (file_data == NULL) | |
9291a0cd TT |
2779 | continue; |
2780 | ||
7b9f3c50 | 2781 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 2782 | { |
7b9f3c50 | 2783 | const char *this_name = file_data->file_names[j]; |
1ef75ecc | 2784 | if (FILENAME_CMP (this_name, filename) == 0) |
9291a0cd | 2785 | { |
a0f42c21 | 2786 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
2787 | break; |
2788 | } | |
2789 | } | |
2790 | } | |
2791 | } | |
2792 | ||
dd786858 | 2793 | static const char * |
9291a0cd TT |
2794 | dw2_find_symbol_file (struct objfile *objfile, const char *name) |
2795 | { | |
e254ef6a | 2796 | struct dwarf2_per_cu_data *per_cu; |
9291a0cd | 2797 | offset_type *vec; |
7b9f3c50 | 2798 | struct quick_file_names *file_data; |
9291a0cd TT |
2799 | |
2800 | dw2_setup (objfile); | |
2801 | ||
ae2de4f8 | 2802 | /* index_table is NULL if OBJF_READNOW. */ |
9291a0cd | 2803 | if (!dwarf2_per_objfile->index_table) |
96408a79 SA |
2804 | { |
2805 | struct symtab *s; | |
2806 | ||
2807 | ALL_OBJFILE_SYMTABS (objfile, s) | |
2808 | if (s->primary) | |
2809 | { | |
2810 | struct blockvector *bv = BLOCKVECTOR (s); | |
2811 | const struct block *block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
2812 | struct symbol *sym = lookup_block_symbol (block, name, VAR_DOMAIN); | |
2813 | ||
2814 | if (sym) | |
2815 | return sym->symtab->filename; | |
2816 | } | |
2817 | return NULL; | |
2818 | } | |
9291a0cd TT |
2819 | |
2820 | if (!find_slot_in_mapped_hash (dwarf2_per_objfile->index_table, | |
2821 | name, &vec)) | |
2822 | return NULL; | |
2823 | ||
2824 | /* Note that this just looks at the very first one named NAME -- but | |
2825 | actually we are looking for a function. find_main_filename | |
2826 | should be rewritten so that it doesn't require a custom hook. It | |
2827 | could just use the ordinary symbol tables. */ | |
2828 | /* vec[0] is the length, which must always be >0. */ | |
e254ef6a | 2829 | per_cu = dw2_get_cu (MAYBE_SWAP (vec[1])); |
9291a0cd | 2830 | |
7b9f3c50 | 2831 | file_data = dw2_get_file_names (objfile, per_cu); |
943cb756 DE |
2832 | if (file_data == NULL |
2833 | || file_data->num_file_names == 0) | |
9291a0cd TT |
2834 | return NULL; |
2835 | ||
7b9f3c50 | 2836 | return file_data->file_names[file_data->num_file_names - 1]; |
9291a0cd TT |
2837 | } |
2838 | ||
2839 | static void | |
40658b94 PH |
2840 | dw2_map_matching_symbols (const char * name, domain_enum namespace, |
2841 | struct objfile *objfile, int global, | |
2842 | int (*callback) (struct block *, | |
2843 | struct symbol *, void *), | |
2edb89d3 JK |
2844 | void *data, symbol_compare_ftype *match, |
2845 | symbol_compare_ftype *ordered_compare) | |
9291a0cd | 2846 | { |
40658b94 | 2847 | /* Currently unimplemented; used for Ada. The function can be called if the |
a9e6a4bb JK |
2848 | current language is Ada for a non-Ada objfile using GNU index. As Ada |
2849 | does not look for non-Ada symbols this function should just return. */ | |
9291a0cd TT |
2850 | } |
2851 | ||
2852 | static void | |
f8eba3c6 TT |
2853 | dw2_expand_symtabs_matching |
2854 | (struct objfile *objfile, | |
2855 | int (*file_matcher) (const char *, void *), | |
e078317b | 2856 | int (*name_matcher) (const char *, void *), |
f8eba3c6 TT |
2857 | enum search_domain kind, |
2858 | void *data) | |
9291a0cd TT |
2859 | { |
2860 | int i; | |
2861 | offset_type iter; | |
4b5246aa | 2862 | struct mapped_index *index; |
9291a0cd TT |
2863 | |
2864 | dw2_setup (objfile); | |
ae2de4f8 DE |
2865 | |
2866 | /* index_table is NULL if OBJF_READNOW. */ | |
9291a0cd TT |
2867 | if (!dwarf2_per_objfile->index_table) |
2868 | return; | |
4b5246aa | 2869 | index = dwarf2_per_objfile->index_table; |
9291a0cd | 2870 | |
7b08b9eb | 2871 | if (file_matcher != NULL) |
24c79950 TT |
2872 | { |
2873 | struct cleanup *cleanup; | |
2874 | htab_t visited_found, visited_not_found; | |
2875 | ||
2876 | visited_found = htab_create_alloc (10, | |
2877 | htab_hash_pointer, htab_eq_pointer, | |
2878 | NULL, xcalloc, xfree); | |
2879 | cleanup = make_cleanup_htab_delete (visited_found); | |
2880 | visited_not_found = htab_create_alloc (10, | |
2881 | htab_hash_pointer, htab_eq_pointer, | |
2882 | NULL, xcalloc, xfree); | |
2883 | make_cleanup_htab_delete (visited_not_found); | |
2884 | ||
2885 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
2886 | + dwarf2_per_objfile->n_type_units); ++i) | |
2887 | { | |
2888 | int j; | |
2889 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); | |
2890 | struct quick_file_names *file_data; | |
2891 | void **slot; | |
7b08b9eb | 2892 | |
24c79950 | 2893 | per_cu->v.quick->mark = 0; |
3d7bb9d9 | 2894 | |
24c79950 TT |
2895 | /* We only need to look at symtabs not already expanded. */ |
2896 | if (per_cu->v.quick->symtab) | |
2897 | continue; | |
7b08b9eb | 2898 | |
24c79950 TT |
2899 | file_data = dw2_get_file_names (objfile, per_cu); |
2900 | if (file_data == NULL) | |
2901 | continue; | |
7b08b9eb | 2902 | |
24c79950 TT |
2903 | if (htab_find (visited_not_found, file_data) != NULL) |
2904 | continue; | |
2905 | else if (htab_find (visited_found, file_data) != NULL) | |
2906 | { | |
2907 | per_cu->v.quick->mark = 1; | |
2908 | continue; | |
2909 | } | |
2910 | ||
2911 | for (j = 0; j < file_data->num_file_names; ++j) | |
2912 | { | |
2913 | if (file_matcher (file_data->file_names[j], data)) | |
2914 | { | |
2915 | per_cu->v.quick->mark = 1; | |
2916 | break; | |
2917 | } | |
2918 | } | |
2919 | ||
2920 | slot = htab_find_slot (per_cu->v.quick->mark | |
2921 | ? visited_found | |
2922 | : visited_not_found, | |
2923 | file_data, INSERT); | |
2924 | *slot = file_data; | |
2925 | } | |
2926 | ||
2927 | do_cleanups (cleanup); | |
2928 | } | |
9291a0cd | 2929 | |
3876f04e | 2930 | for (iter = 0; iter < index->symbol_table_slots; ++iter) |
9291a0cd TT |
2931 | { |
2932 | offset_type idx = 2 * iter; | |
2933 | const char *name; | |
2934 | offset_type *vec, vec_len, vec_idx; | |
2935 | ||
3876f04e | 2936 | if (index->symbol_table[idx] == 0 && index->symbol_table[idx + 1] == 0) |
9291a0cd TT |
2937 | continue; |
2938 | ||
3876f04e | 2939 | name = index->constant_pool + MAYBE_SWAP (index->symbol_table[idx]); |
9291a0cd | 2940 | |
e078317b | 2941 | if (! (*name_matcher) (name, data)) |
9291a0cd TT |
2942 | continue; |
2943 | ||
2944 | /* The name was matched, now expand corresponding CUs that were | |
2945 | marked. */ | |
4b5246aa | 2946 | vec = (offset_type *) (index->constant_pool |
3876f04e | 2947 | + MAYBE_SWAP (index->symbol_table[idx + 1])); |
9291a0cd TT |
2948 | vec_len = MAYBE_SWAP (vec[0]); |
2949 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
2950 | { | |
e254ef6a | 2951 | struct dwarf2_per_cu_data *per_cu; |
1fd400ff | 2952 | |
e254ef6a | 2953 | per_cu = dw2_get_cu (MAYBE_SWAP (vec[vec_idx + 1])); |
7b08b9eb | 2954 | if (file_matcher == NULL || per_cu->v.quick->mark) |
a0f42c21 | 2955 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
2956 | } |
2957 | } | |
2958 | } | |
2959 | ||
2960 | static struct symtab * | |
2961 | dw2_find_pc_sect_symtab (struct objfile *objfile, | |
2962 | struct minimal_symbol *msymbol, | |
2963 | CORE_ADDR pc, | |
2964 | struct obj_section *section, | |
2965 | int warn_if_readin) | |
2966 | { | |
2967 | struct dwarf2_per_cu_data *data; | |
2968 | ||
2969 | dw2_setup (objfile); | |
2970 | ||
2971 | if (!objfile->psymtabs_addrmap) | |
2972 | return NULL; | |
2973 | ||
2974 | data = addrmap_find (objfile->psymtabs_addrmap, pc); | |
2975 | if (!data) | |
2976 | return NULL; | |
2977 | ||
2978 | if (warn_if_readin && data->v.quick->symtab) | |
abebb8b0 | 2979 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), |
9291a0cd TT |
2980 | paddress (get_objfile_arch (objfile), pc)); |
2981 | ||
a0f42c21 | 2982 | return dw2_instantiate_symtab (data); |
9291a0cd TT |
2983 | } |
2984 | ||
9291a0cd | 2985 | static void |
44b13c5a | 2986 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, |
74e2f255 | 2987 | void *data, int need_fullname) |
9291a0cd TT |
2988 | { |
2989 | int i; | |
24c79950 TT |
2990 | struct cleanup *cleanup; |
2991 | htab_t visited = htab_create_alloc (10, htab_hash_pointer, htab_eq_pointer, | |
2992 | NULL, xcalloc, xfree); | |
9291a0cd | 2993 | |
24c79950 | 2994 | cleanup = make_cleanup_htab_delete (visited); |
9291a0cd | 2995 | dw2_setup (objfile); |
ae2de4f8 | 2996 | |
24c79950 TT |
2997 | /* We can ignore file names coming from already-expanded CUs. */ |
2998 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
2999 | + dwarf2_per_objfile->n_type_units); ++i) | |
3000 | { | |
3001 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); | |
3002 | ||
3003 | if (per_cu->v.quick->symtab) | |
3004 | { | |
3005 | void **slot = htab_find_slot (visited, per_cu->v.quick->file_names, | |
3006 | INSERT); | |
3007 | ||
3008 | *slot = per_cu->v.quick->file_names; | |
3009 | } | |
3010 | } | |
3011 | ||
1fd400ff | 3012 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
d467dd73 | 3013 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd TT |
3014 | { |
3015 | int j; | |
e254ef6a | 3016 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
7b9f3c50 | 3017 | struct quick_file_names *file_data; |
24c79950 | 3018 | void **slot; |
9291a0cd | 3019 | |
3d7bb9d9 | 3020 | /* We only need to look at symtabs not already expanded. */ |
e254ef6a | 3021 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
3022 | continue; |
3023 | ||
7b9f3c50 DE |
3024 | file_data = dw2_get_file_names (objfile, per_cu); |
3025 | if (file_data == NULL) | |
9291a0cd TT |
3026 | continue; |
3027 | ||
24c79950 TT |
3028 | slot = htab_find_slot (visited, file_data, INSERT); |
3029 | if (*slot) | |
3030 | { | |
3031 | /* Already visited. */ | |
3032 | continue; | |
3033 | } | |
3034 | *slot = file_data; | |
3035 | ||
7b9f3c50 | 3036 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3037 | { |
74e2f255 DE |
3038 | const char *this_real_name; |
3039 | ||
3040 | if (need_fullname) | |
3041 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
3042 | else | |
3043 | this_real_name = NULL; | |
7b9f3c50 | 3044 | (*fun) (file_data->file_names[j], this_real_name, data); |
9291a0cd TT |
3045 | } |
3046 | } | |
24c79950 TT |
3047 | |
3048 | do_cleanups (cleanup); | |
9291a0cd TT |
3049 | } |
3050 | ||
3051 | static int | |
3052 | dw2_has_symbols (struct objfile *objfile) | |
3053 | { | |
3054 | return 1; | |
3055 | } | |
3056 | ||
3057 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
3058 | { | |
3059 | dw2_has_symbols, | |
3060 | dw2_find_last_source_symtab, | |
3061 | dw2_forget_cached_source_info, | |
f8eba3c6 | 3062 | dw2_map_symtabs_matching_filename, |
9291a0cd | 3063 | dw2_lookup_symbol, |
774b6a14 | 3064 | dw2_pre_expand_symtabs_matching, |
9291a0cd TT |
3065 | dw2_print_stats, |
3066 | dw2_dump, | |
3067 | dw2_relocate, | |
3068 | dw2_expand_symtabs_for_function, | |
3069 | dw2_expand_all_symtabs, | |
3070 | dw2_expand_symtabs_with_filename, | |
3071 | dw2_find_symbol_file, | |
40658b94 | 3072 | dw2_map_matching_symbols, |
9291a0cd TT |
3073 | dw2_expand_symtabs_matching, |
3074 | dw2_find_pc_sect_symtab, | |
9291a0cd TT |
3075 | dw2_map_symbol_filenames |
3076 | }; | |
3077 | ||
3078 | /* Initialize for reading DWARF for this objfile. Return 0 if this | |
3079 | file will use psymtabs, or 1 if using the GNU index. */ | |
3080 | ||
3081 | int | |
3082 | dwarf2_initialize_objfile (struct objfile *objfile) | |
3083 | { | |
3084 | /* If we're about to read full symbols, don't bother with the | |
3085 | indices. In this case we also don't care if some other debug | |
3086 | format is making psymtabs, because they are all about to be | |
3087 | expanded anyway. */ | |
3088 | if ((objfile->flags & OBJF_READNOW)) | |
3089 | { | |
3090 | int i; | |
3091 | ||
3092 | dwarf2_per_objfile->using_index = 1; | |
3093 | create_all_comp_units (objfile); | |
0e50663e | 3094 | create_all_type_units (objfile); |
7b9f3c50 DE |
3095 | dwarf2_per_objfile->quick_file_names_table = |
3096 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd | 3097 | |
1fd400ff | 3098 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
d467dd73 | 3099 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 3100 | { |
e254ef6a | 3101 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 3102 | |
e254ef6a DE |
3103 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
3104 | struct dwarf2_per_cu_quick_data); | |
9291a0cd TT |
3105 | } |
3106 | ||
3107 | /* Return 1 so that gdb sees the "quick" functions. However, | |
3108 | these functions will be no-ops because we will have expanded | |
3109 | all symtabs. */ | |
3110 | return 1; | |
3111 | } | |
3112 | ||
3113 | if (dwarf2_read_index (objfile)) | |
3114 | return 1; | |
3115 | ||
9291a0cd TT |
3116 | return 0; |
3117 | } | |
3118 | ||
3119 | \f | |
3120 | ||
dce234bc PP |
3121 | /* Build a partial symbol table. */ |
3122 | ||
3123 | void | |
f29dff0a | 3124 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 3125 | { |
f29dff0a | 3126 | if (objfile->global_psymbols.size == 0 && objfile->static_psymbols.size == 0) |
c906108c SS |
3127 | { |
3128 | init_psymbol_list (objfile, 1024); | |
3129 | } | |
3130 | ||
d146bf1e | 3131 | dwarf2_build_psymtabs_hard (objfile); |
c906108c | 3132 | } |
c906108c | 3133 | |
45452591 DE |
3134 | /* Return TRUE if OFFSET is within CU_HEADER. */ |
3135 | ||
3136 | static inline int | |
b64f50a1 | 3137 | offset_in_cu_p (const struct comp_unit_head *cu_header, sect_offset offset) |
45452591 | 3138 | { |
b64f50a1 JK |
3139 | sect_offset bottom = { cu_header->offset.sect_off }; |
3140 | sect_offset top = { (cu_header->offset.sect_off + cu_header->length | |
3141 | + cu_header->initial_length_size) }; | |
9a619af0 | 3142 | |
b64f50a1 | 3143 | return (offset.sect_off >= bottom.sect_off && offset.sect_off < top.sect_off); |
45452591 DE |
3144 | } |
3145 | ||
93311388 DE |
3146 | /* Read in the comp unit header information from the debug_info at info_ptr. |
3147 | NOTE: This leaves members offset, first_die_offset to be filled in | |
3148 | by the caller. */ | |
107d2387 | 3149 | |
fe1b8b76 | 3150 | static gdb_byte * |
107d2387 | 3151 | read_comp_unit_head (struct comp_unit_head *cu_header, |
fe1b8b76 | 3152 | gdb_byte *info_ptr, bfd *abfd) |
107d2387 AC |
3153 | { |
3154 | int signed_addr; | |
891d2f0b | 3155 | unsigned int bytes_read; |
c764a876 DE |
3156 | |
3157 | cu_header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
3158 | cu_header->initial_length_size = bytes_read; | |
3159 | cu_header->offset_size = (bytes_read == 4) ? 4 : 8; | |
613e1657 | 3160 | info_ptr += bytes_read; |
107d2387 AC |
3161 | cu_header->version = read_2_bytes (abfd, info_ptr); |
3162 | info_ptr += 2; | |
b64f50a1 JK |
3163 | cu_header->abbrev_offset.sect_off = read_offset (abfd, info_ptr, cu_header, |
3164 | &bytes_read); | |
613e1657 | 3165 | info_ptr += bytes_read; |
107d2387 AC |
3166 | cu_header->addr_size = read_1_byte (abfd, info_ptr); |
3167 | info_ptr += 1; | |
3168 | signed_addr = bfd_get_sign_extend_vma (abfd); | |
3169 | if (signed_addr < 0) | |
8e65ff28 | 3170 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3171 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 | 3172 | cu_header->signed_addr_p = signed_addr; |
c764a876 | 3173 | |
107d2387 AC |
3174 | return info_ptr; |
3175 | } | |
3176 | ||
9ff913ba DE |
3177 | /* Subroutine of read_and_check_comp_unit_head and |
3178 | read_and_check_type_unit_head to simplify them. | |
3179 | Perform various error checking on the header. */ | |
3180 | ||
3181 | static void | |
3182 | error_check_comp_unit_head (struct comp_unit_head *header, | |
3183 | struct dwarf2_section_info *section) | |
3184 | { | |
3185 | bfd *abfd = section->asection->owner; | |
3186 | const char *filename = bfd_get_filename (abfd); | |
3187 | ||
3188 | if (header->version != 2 && header->version != 3 && header->version != 4) | |
3189 | error (_("Dwarf Error: wrong version in compilation unit header " | |
3190 | "(is %d, should be 2, 3, or 4) [in module %s]"), header->version, | |
3191 | filename); | |
3192 | ||
b64f50a1 | 3193 | if (header->abbrev_offset.sect_off |
9ff913ba DE |
3194 | >= dwarf2_section_size (dwarf2_per_objfile->objfile, |
3195 | &dwarf2_per_objfile->abbrev)) | |
3196 | error (_("Dwarf Error: bad offset (0x%lx) in compilation unit header " | |
3197 | "(offset 0x%lx + 6) [in module %s]"), | |
b64f50a1 | 3198 | (long) header->abbrev_offset.sect_off, (long) header->offset.sect_off, |
9ff913ba DE |
3199 | filename); |
3200 | ||
3201 | /* Cast to unsigned long to use 64-bit arithmetic when possible to | |
3202 | avoid potential 32-bit overflow. */ | |
b64f50a1 | 3203 | if (((unsigned long) header->offset.sect_off |
9ff913ba DE |
3204 | + header->length + header->initial_length_size) |
3205 | > section->size) | |
3206 | error (_("Dwarf Error: bad length (0x%lx) in compilation unit header " | |
3207 | "(offset 0x%lx + 0) [in module %s]"), | |
b64f50a1 | 3208 | (long) header->length, (long) header->offset.sect_off, |
9ff913ba DE |
3209 | filename); |
3210 | } | |
3211 | ||
3212 | /* Read in a CU/TU header and perform some basic error checking. | |
3213 | The contents of the header are stored in HEADER. | |
3214 | The result is a pointer to the start of the first DIE. */ | |
adabb602 | 3215 | |
fe1b8b76 | 3216 | static gdb_byte * |
9ff913ba DE |
3217 | read_and_check_comp_unit_head (struct comp_unit_head *header, |
3218 | struct dwarf2_section_info *section, | |
3219 | gdb_byte *info_ptr, | |
3220 | int is_debug_types_section) | |
72bf9492 | 3221 | { |
fe1b8b76 | 3222 | gdb_byte *beg_of_comp_unit = info_ptr; |
9ff913ba | 3223 | bfd *abfd = section->asection->owner; |
72bf9492 | 3224 | |
b64f50a1 | 3225 | header->offset.sect_off = beg_of_comp_unit - section->buffer; |
adabb602 | 3226 | |
72bf9492 DJ |
3227 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); |
3228 | ||
460c1c54 CC |
3229 | /* If we're reading a type unit, skip over the signature and |
3230 | type_offset fields. */ | |
b0df02fd | 3231 | if (is_debug_types_section) |
460c1c54 CC |
3232 | info_ptr += 8 /*signature*/ + header->offset_size; |
3233 | ||
b64f50a1 | 3234 | header->first_die_offset.cu_off = info_ptr - beg_of_comp_unit; |
adabb602 | 3235 | |
9ff913ba | 3236 | error_check_comp_unit_head (header, section); |
72bf9492 DJ |
3237 | |
3238 | return info_ptr; | |
3239 | } | |
3240 | ||
348e048f DE |
3241 | /* Read in the types comp unit header information from .debug_types entry at |
3242 | types_ptr. The result is a pointer to one past the end of the header. */ | |
3243 | ||
3244 | static gdb_byte * | |
9ff913ba DE |
3245 | read_and_check_type_unit_head (struct comp_unit_head *header, |
3246 | struct dwarf2_section_info *section, | |
3247 | gdb_byte *info_ptr, | |
dee91e82 DE |
3248 | ULONGEST *signature, |
3249 | cu_offset *type_offset_in_tu) | |
348e048f | 3250 | { |
9ff913ba DE |
3251 | gdb_byte *beg_of_comp_unit = info_ptr; |
3252 | bfd *abfd = section->asection->owner; | |
348e048f | 3253 | |
b64f50a1 | 3254 | header->offset.sect_off = beg_of_comp_unit - section->buffer; |
348e048f | 3255 | |
9ff913ba | 3256 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); |
348e048f | 3257 | |
9ff913ba DE |
3258 | /* If we're reading a type unit, skip over the signature and |
3259 | type_offset fields. */ | |
3260 | if (signature != NULL) | |
3261 | *signature = read_8_bytes (abfd, info_ptr); | |
3262 | info_ptr += 8; | |
dee91e82 DE |
3263 | if (type_offset_in_tu != NULL) |
3264 | type_offset_in_tu->cu_off = read_offset_1 (abfd, info_ptr, | |
3265 | header->offset_size); | |
9ff913ba DE |
3266 | info_ptr += header->offset_size; |
3267 | ||
b64f50a1 | 3268 | header->first_die_offset.cu_off = info_ptr - beg_of_comp_unit; |
348e048f | 3269 | |
9ff913ba DE |
3270 | error_check_comp_unit_head (header, section); |
3271 | ||
3272 | return info_ptr; | |
348e048f DE |
3273 | } |
3274 | ||
aaa75496 JB |
3275 | /* Allocate a new partial symtab for file named NAME and mark this new |
3276 | partial symtab as being an include of PST. */ | |
3277 | ||
3278 | static void | |
3279 | dwarf2_create_include_psymtab (char *name, struct partial_symtab *pst, | |
3280 | struct objfile *objfile) | |
3281 | { | |
3282 | struct partial_symtab *subpst = allocate_psymtab (name, objfile); | |
3283 | ||
3284 | subpst->section_offsets = pst->section_offsets; | |
3285 | subpst->textlow = 0; | |
3286 | subpst->texthigh = 0; | |
3287 | ||
3288 | subpst->dependencies = (struct partial_symtab **) | |
3289 | obstack_alloc (&objfile->objfile_obstack, | |
3290 | sizeof (struct partial_symtab *)); | |
3291 | subpst->dependencies[0] = pst; | |
3292 | subpst->number_of_dependencies = 1; | |
3293 | ||
3294 | subpst->globals_offset = 0; | |
3295 | subpst->n_global_syms = 0; | |
3296 | subpst->statics_offset = 0; | |
3297 | subpst->n_static_syms = 0; | |
3298 | subpst->symtab = NULL; | |
3299 | subpst->read_symtab = pst->read_symtab; | |
3300 | subpst->readin = 0; | |
3301 | ||
3302 | /* No private part is necessary for include psymtabs. This property | |
3303 | can be used to differentiate between such include psymtabs and | |
10b3939b | 3304 | the regular ones. */ |
58a9656e | 3305 | subpst->read_symtab_private = NULL; |
aaa75496 JB |
3306 | } |
3307 | ||
3308 | /* Read the Line Number Program data and extract the list of files | |
3309 | included by the source file represented by PST. Build an include | |
d85a05f0 | 3310 | partial symtab for each of these included files. */ |
aaa75496 JB |
3311 | |
3312 | static void | |
3313 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 DE |
3314 | struct die_info *die, |
3315 | struct partial_symtab *pst) | |
aaa75496 | 3316 | { |
d85a05f0 DJ |
3317 | struct line_header *lh = NULL; |
3318 | struct attribute *attr; | |
aaa75496 | 3319 | |
d85a05f0 DJ |
3320 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
3321 | if (attr) | |
3019eac3 | 3322 | lh = dwarf_decode_line_header (DW_UNSND (attr), cu); |
aaa75496 JB |
3323 | if (lh == NULL) |
3324 | return; /* No linetable, so no includes. */ | |
3325 | ||
c6da4cef | 3326 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). */ |
f3f5162e | 3327 | dwarf_decode_lines (lh, pst->dirname, cu, pst, 1); |
aaa75496 JB |
3328 | |
3329 | free_line_header (lh); | |
3330 | } | |
3331 | ||
348e048f | 3332 | static hashval_t |
52dc124a | 3333 | hash_signatured_type (const void *item) |
348e048f | 3334 | { |
52dc124a | 3335 | const struct signatured_type *sig_type = item; |
9a619af0 | 3336 | |
348e048f | 3337 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 3338 | return sig_type->signature; |
348e048f DE |
3339 | } |
3340 | ||
3341 | static int | |
52dc124a | 3342 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f DE |
3343 | { |
3344 | const struct signatured_type *lhs = item_lhs; | |
3345 | const struct signatured_type *rhs = item_rhs; | |
9a619af0 | 3346 | |
348e048f DE |
3347 | return lhs->signature == rhs->signature; |
3348 | } | |
3349 | ||
1fd400ff TT |
3350 | /* Allocate a hash table for signatured types. */ |
3351 | ||
3352 | static htab_t | |
673bfd45 | 3353 | allocate_signatured_type_table (struct objfile *objfile) |
1fd400ff TT |
3354 | { |
3355 | return htab_create_alloc_ex (41, | |
52dc124a DE |
3356 | hash_signatured_type, |
3357 | eq_signatured_type, | |
1fd400ff TT |
3358 | NULL, |
3359 | &objfile->objfile_obstack, | |
3360 | hashtab_obstack_allocate, | |
3361 | dummy_obstack_deallocate); | |
3362 | } | |
3363 | ||
d467dd73 | 3364 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
3365 | |
3366 | static int | |
d467dd73 | 3367 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff TT |
3368 | { |
3369 | struct signatured_type *sigt = *slot; | |
3370 | struct dwarf2_per_cu_data ***datap = datum; | |
3371 | ||
3372 | **datap = &sigt->per_cu; | |
3373 | ++*datap; | |
3374 | ||
3375 | return 1; | |
3376 | } | |
3377 | ||
3019eac3 DE |
3378 | /* Create the hash table of all entries in the .debug_types section. |
3379 | DWO_FILE is a pointer to the DWO file for .debug_types.dwo, NULL otherwise. | |
3380 | The result is a pointer to the hash table or NULL if there are | |
3381 | no types. */ | |
348e048f | 3382 | |
3019eac3 DE |
3383 | static htab_t |
3384 | create_debug_types_hash_table (struct dwo_file *dwo_file, | |
3385 | VEC (dwarf2_section_info_def) *types) | |
348e048f | 3386 | { |
3019eac3 | 3387 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8b70b953 | 3388 | htab_t types_htab = NULL; |
8b70b953 TT |
3389 | int ix; |
3390 | struct dwarf2_section_info *section; | |
348e048f | 3391 | |
3019eac3 DE |
3392 | if (VEC_empty (dwarf2_section_info_def, types)) |
3393 | return NULL; | |
348e048f | 3394 | |
8b70b953 | 3395 | for (ix = 0; |
3019eac3 | 3396 | VEC_iterate (dwarf2_section_info_def, types, ix, section); |
8b70b953 TT |
3397 | ++ix) |
3398 | { | |
3019eac3 | 3399 | bfd *abfd; |
8b70b953 | 3400 | gdb_byte *info_ptr, *end_ptr; |
348e048f | 3401 | |
8b70b953 TT |
3402 | dwarf2_read_section (objfile, section); |
3403 | info_ptr = section->buffer; | |
348e048f | 3404 | |
8b70b953 TT |
3405 | if (info_ptr == NULL) |
3406 | continue; | |
348e048f | 3407 | |
3019eac3 DE |
3408 | /* We can't set abfd until now because the section may be empty or |
3409 | not present, in which case section->asection will be NULL. */ | |
3410 | abfd = section->asection->owner; | |
3411 | ||
8b70b953 | 3412 | if (types_htab == NULL) |
3019eac3 DE |
3413 | { |
3414 | if (dwo_file) | |
3415 | types_htab = allocate_dwo_unit_table (objfile); | |
3416 | else | |
3417 | types_htab = allocate_signatured_type_table (objfile); | |
3418 | } | |
348e048f | 3419 | |
8b70b953 | 3420 | if (dwarf2_die_debug) |
dee91e82 DE |
3421 | fprintf_unfiltered (gdb_stdlog, "Reading signatured types for %s:\n", |
3422 | bfd_get_filename (abfd)); | |
3423 | ||
3424 | /* We don't use init_cutu_and_read_dies_simple, or some such, here | |
3425 | because we don't need to read any dies: the signature is in the | |
3426 | header. */ | |
8b70b953 TT |
3427 | |
3428 | end_ptr = info_ptr + section->size; | |
3429 | while (info_ptr < end_ptr) | |
3430 | { | |
b64f50a1 | 3431 | sect_offset offset; |
3019eac3 | 3432 | cu_offset type_offset_in_tu; |
8b70b953 | 3433 | ULONGEST signature; |
52dc124a | 3434 | struct signatured_type *sig_type; |
3019eac3 | 3435 | struct dwo_unit *dwo_tu; |
8b70b953 TT |
3436 | void **slot; |
3437 | gdb_byte *ptr = info_ptr; | |
9ff913ba | 3438 | struct comp_unit_head header; |
dee91e82 | 3439 | unsigned int length; |
348e048f | 3440 | |
b64f50a1 | 3441 | offset.sect_off = ptr - section->buffer; |
348e048f | 3442 | |
8b70b953 | 3443 | /* We need to read the type's signature in order to build the hash |
9ff913ba | 3444 | table, but we don't need anything else just yet. */ |
348e048f | 3445 | |
9ff913ba | 3446 | ptr = read_and_check_type_unit_head (&header, section, ptr, |
3019eac3 | 3447 | &signature, &type_offset_in_tu); |
6caca83c | 3448 | |
dee91e82 DE |
3449 | length = header.initial_length_size + header.length; |
3450 | ||
6caca83c | 3451 | /* Skip dummy type units. */ |
dee91e82 DE |
3452 | if (ptr >= info_ptr + length |
3453 | || peek_abbrev_code (abfd, ptr) == 0) | |
6caca83c | 3454 | { |
dee91e82 | 3455 | info_ptr += header.initial_length_size + header.length; |
6caca83c CC |
3456 | continue; |
3457 | } | |
8b70b953 | 3458 | |
3019eac3 DE |
3459 | if (dwo_file) |
3460 | { | |
3461 | sig_type = NULL; | |
3462 | dwo_tu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
3463 | struct dwo_unit); | |
3464 | dwo_tu->dwo_file = dwo_file; | |
3465 | dwo_tu->signature = signature; | |
3466 | dwo_tu->type_offset_in_tu = type_offset_in_tu; | |
3467 | dwo_tu->info_or_types_section = section; | |
3468 | dwo_tu->offset = offset; | |
3469 | dwo_tu->length = length; | |
3470 | } | |
3471 | else | |
3472 | { | |
3473 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
3474 | The real type_offset is in the DWO file. */ | |
3475 | dwo_tu = NULL; | |
3476 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
3477 | struct signatured_type); | |
3478 | sig_type->signature = signature; | |
3479 | sig_type->type_offset_in_tu = type_offset_in_tu; | |
3480 | sig_type->per_cu.objfile = objfile; | |
3481 | sig_type->per_cu.is_debug_types = 1; | |
3482 | sig_type->per_cu.info_or_types_section = section; | |
3483 | sig_type->per_cu.offset = offset; | |
3484 | sig_type->per_cu.length = length; | |
3485 | } | |
8b70b953 | 3486 | |
3019eac3 DE |
3487 | slot = htab_find_slot (types_htab, |
3488 | dwo_file ? (void*) dwo_tu : (void *) sig_type, | |
3489 | INSERT); | |
8b70b953 TT |
3490 | gdb_assert (slot != NULL); |
3491 | if (*slot != NULL) | |
3492 | { | |
3019eac3 DE |
3493 | sect_offset dup_offset; |
3494 | ||
3495 | if (dwo_file) | |
3496 | { | |
3497 | const struct dwo_unit *dup_tu = *slot; | |
3498 | ||
3499 | dup_offset = dup_tu->offset; | |
3500 | } | |
3501 | else | |
3502 | { | |
3503 | const struct signatured_type *dup_tu = *slot; | |
3504 | ||
3505 | dup_offset = dup_tu->per_cu.offset; | |
3506 | } | |
b3c8eb43 | 3507 | |
8b70b953 TT |
3508 | complaint (&symfile_complaints, |
3509 | _("debug type entry at offset 0x%x is duplicate to the " | |
3510 | "entry at offset 0x%x, signature 0x%s"), | |
3019eac3 | 3511 | offset.sect_off, dup_offset.sect_off, |
8b70b953 | 3512 | phex (signature, sizeof (signature))); |
8b70b953 | 3513 | } |
3019eac3 | 3514 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; |
348e048f | 3515 | |
8b70b953 TT |
3516 | if (dwarf2_die_debug) |
3517 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, signature 0x%s\n", | |
b64f50a1 JK |
3518 | offset.sect_off, |
3519 | phex (signature, sizeof (signature))); | |
348e048f | 3520 | |
dee91e82 | 3521 | info_ptr += length; |
8b70b953 | 3522 | } |
348e048f DE |
3523 | } |
3524 | ||
3019eac3 DE |
3525 | return types_htab; |
3526 | } | |
3527 | ||
3528 | /* Create the hash table of all entries in the .debug_types section, | |
3529 | and initialize all_type_units. | |
3530 | The result is zero if there is an error (e.g. missing .debug_types section), | |
3531 | otherwise non-zero. */ | |
3532 | ||
3533 | static int | |
3534 | create_all_type_units (struct objfile *objfile) | |
3535 | { | |
3536 | htab_t types_htab; | |
3537 | struct dwarf2_per_cu_data **iter; | |
3538 | ||
3539 | types_htab = create_debug_types_hash_table (NULL, dwarf2_per_objfile->types); | |
3540 | if (types_htab == NULL) | |
3541 | { | |
3542 | dwarf2_per_objfile->signatured_types = NULL; | |
3543 | return 0; | |
3544 | } | |
3545 | ||
348e048f DE |
3546 | dwarf2_per_objfile->signatured_types = types_htab; |
3547 | ||
d467dd73 DE |
3548 | dwarf2_per_objfile->n_type_units = htab_elements (types_htab); |
3549 | dwarf2_per_objfile->all_type_units | |
1fd400ff | 3550 | = obstack_alloc (&objfile->objfile_obstack, |
d467dd73 | 3551 | dwarf2_per_objfile->n_type_units |
1fd400ff | 3552 | * sizeof (struct dwarf2_per_cu_data *)); |
d467dd73 DE |
3553 | iter = &dwarf2_per_objfile->all_type_units[0]; |
3554 | htab_traverse_noresize (types_htab, add_signatured_type_cu_to_table, &iter); | |
3555 | gdb_assert (iter - &dwarf2_per_objfile->all_type_units[0] | |
3556 | == dwarf2_per_objfile->n_type_units); | |
1fd400ff | 3557 | |
348e048f DE |
3558 | return 1; |
3559 | } | |
3560 | ||
380bca97 | 3561 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
e319fa28 | 3562 | Returns NULL if signature SIG is not present in the table. */ |
348e048f DE |
3563 | |
3564 | static struct signatured_type * | |
e319fa28 | 3565 | lookup_signatured_type (ULONGEST sig) |
348e048f DE |
3566 | { |
3567 | struct signatured_type find_entry, *entry; | |
3568 | ||
3569 | if (dwarf2_per_objfile->signatured_types == NULL) | |
3570 | { | |
3571 | complaint (&symfile_complaints, | |
55f1336d | 3572 | _("missing `.debug_types' section for DW_FORM_ref_sig8 die")); |
dcc07052 | 3573 | return NULL; |
348e048f DE |
3574 | } |
3575 | ||
3576 | find_entry.signature = sig; | |
3577 | entry = htab_find (dwarf2_per_objfile->signatured_types, &find_entry); | |
3578 | return entry; | |
3579 | } | |
3580 | ||
d85a05f0 DJ |
3581 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
3582 | ||
3583 | static void | |
3584 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 3585 | struct dwarf2_cu *cu, |
3019eac3 DE |
3586 | struct dwarf2_section_info *section, |
3587 | struct dwo_file *dwo_file) | |
d85a05f0 | 3588 | { |
fceca515 | 3589 | gdb_assert (section->readin && section->buffer != NULL); |
dee91e82 | 3590 | reader->abfd = section->asection->owner; |
d85a05f0 | 3591 | reader->cu = cu; |
3019eac3 | 3592 | reader->dwo_file = dwo_file; |
dee91e82 DE |
3593 | reader->die_section = section; |
3594 | reader->buffer = section->buffer; | |
d85a05f0 DJ |
3595 | } |
3596 | ||
3597 | /* Find the base address of the compilation unit for range lists and | |
3598 | location lists. It will normally be specified by DW_AT_low_pc. | |
3599 | In DWARF-3 draft 4, the base address could be overridden by | |
3600 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
3601 | compilation units with discontinuous ranges. */ | |
3602 | ||
3603 | static void | |
3604 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
3605 | { | |
3606 | struct attribute *attr; | |
3607 | ||
3608 | cu->base_known = 0; | |
3609 | cu->base_address = 0; | |
3610 | ||
3611 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
3612 | if (attr) | |
3613 | { | |
3614 | cu->base_address = DW_ADDR (attr); | |
3615 | cu->base_known = 1; | |
3616 | } | |
3617 | else | |
3618 | { | |
3619 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
3620 | if (attr) | |
3621 | { | |
3622 | cu->base_address = DW_ADDR (attr); | |
3623 | cu->base_known = 1; | |
3624 | } | |
3625 | } | |
3626 | } | |
3627 | ||
fd820528 | 3628 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 3629 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 DE |
3630 | |
3631 | If USE_EXISTING_CU is non-zero, and THIS_CU->cu is non-NULL, then use it. | |
3632 | Otherwise, a new CU is allocated with xmalloc. | |
3633 | ||
3634 | If KEEP is non-zero, then if we allocated a dwarf2_cu we add it to | |
3635 | read_in_chain. Otherwise the dwarf2_cu data is freed at the end. | |
3636 | ||
3637 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
fd820528 | 3638 | linker) then DIE_READER_FUNC will not get called. */ |
aaa75496 | 3639 | |
70221824 | 3640 | static void |
fd820528 DE |
3641 | init_cutu_and_read_dies (struct dwarf2_per_cu_data *this_cu, |
3642 | int use_existing_cu, int keep, | |
3643 | die_reader_func_ftype *die_reader_func, | |
3644 | void *data) | |
c906108c | 3645 | { |
dee91e82 | 3646 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 DE |
3647 | struct dwarf2_section_info *section = this_cu->info_or_types_section; |
3648 | bfd *abfd = section->asection->owner; | |
dee91e82 DE |
3649 | struct dwarf2_cu *cu; |
3650 | gdb_byte *begin_info_ptr, *info_ptr; | |
3651 | struct die_reader_specs reader; | |
d85a05f0 | 3652 | struct die_info *comp_unit_die; |
dee91e82 | 3653 | int has_children; |
d85a05f0 | 3654 | struct attribute *attr; |
dee91e82 DE |
3655 | struct cleanup *cleanups, *free_cu_cleanup = NULL; |
3656 | struct signatured_type *sig_type = NULL; | |
c906108c | 3657 | |
dee91e82 DE |
3658 | if (use_existing_cu) |
3659 | gdb_assert (keep); | |
23745b47 | 3660 | |
dee91e82 DE |
3661 | cleanups = make_cleanup (null_cleanup, NULL); |
3662 | ||
3663 | /* This is cheap if the section is already read in. */ | |
3664 | dwarf2_read_section (objfile, section); | |
3665 | ||
3666 | begin_info_ptr = info_ptr = section->buffer + this_cu->offset.sect_off; | |
3667 | ||
3668 | if (use_existing_cu && this_cu->cu != NULL) | |
3669 | { | |
3670 | cu = this_cu->cu; | |
3671 | info_ptr += cu->header.first_die_offset.cu_off; | |
3672 | } | |
3673 | else | |
3674 | { | |
3675 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
3676 | gdb_assert (this_cu->cu == NULL); | |
3677 | ||
3678 | cu = xmalloc (sizeof (*cu)); | |
3679 | init_one_comp_unit (cu, this_cu); | |
3680 | ||
3681 | /* If an error occurs while loading, release our storage. */ | |
3682 | free_cu_cleanup = make_cleanup (free_heap_comp_unit, cu); | |
3683 | ||
3019eac3 | 3684 | if (this_cu->is_debug_types) |
dee91e82 DE |
3685 | { |
3686 | ULONGEST signature; | |
3687 | ||
3688 | info_ptr = read_and_check_type_unit_head (&cu->header, | |
3689 | section, info_ptr, | |
3690 | &signature, NULL); | |
3691 | ||
3692 | /* There's no way to get from PER_CU to its containing | |
3693 | struct signatured_type. | |
3694 | But we have the signature so we can use that. */ | |
3695 | sig_type = lookup_signatured_type (signature); | |
3696 | /* We've already scanned all the signatured types, | |
3697 | this must succeed. */ | |
3698 | gdb_assert (sig_type != NULL); | |
3699 | gdb_assert (&sig_type->per_cu == this_cu); | |
3700 | gdb_assert (this_cu->offset.sect_off == cu->header.offset.sect_off); | |
3701 | ||
3702 | /* LENGTH has not been set yet for type units. */ | |
3703 | this_cu->length = cu->header.length + cu->header.initial_length_size; | |
3019eac3 DE |
3704 | |
3705 | /* Establish the type offset that can be used to lookup the type. */ | |
3706 | sig_type->type_offset_in_section.sect_off = | |
3707 | this_cu->offset.sect_off + sig_type->type_offset_in_tu.cu_off; | |
dee91e82 DE |
3708 | } |
3709 | else | |
3710 | { | |
3711 | info_ptr = read_and_check_comp_unit_head (&cu->header, | |
3712 | section, info_ptr, 0); | |
3713 | ||
3714 | gdb_assert (this_cu->offset.sect_off == cu->header.offset.sect_off); | |
3715 | gdb_assert (this_cu->length | |
3716 | == cu->header.length + cu->header.initial_length_size); | |
3717 | } | |
3718 | } | |
10b3939b | 3719 | |
6caca83c | 3720 | /* Skip dummy compilation units. */ |
dee91e82 | 3721 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c CC |
3722 | || peek_abbrev_code (abfd, info_ptr) == 0) |
3723 | { | |
dee91e82 | 3724 | do_cleanups (cleanups); |
21b2bd31 | 3725 | return; |
6caca83c CC |
3726 | } |
3727 | ||
93311388 | 3728 | /* Read the abbrevs for this compilation unit into a table. */ |
dee91e82 DE |
3729 | if (cu->dwarf2_abbrevs == NULL) |
3730 | { | |
3731 | dwarf2_read_abbrevs (cu, &dwarf2_per_objfile->abbrev); | |
3732 | make_cleanup (dwarf2_free_abbrev_table, cu); | |
3733 | } | |
af703f96 | 3734 | |
dee91e82 | 3735 | /* Read the top level CU/TU die. */ |
3019eac3 | 3736 | init_cu_die_reader (&reader, cu, section, NULL); |
dee91e82 | 3737 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
93311388 | 3738 | |
3019eac3 DE |
3739 | /* If we have a DWO stub, process it and then read in the DWO file. |
3740 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains | |
3741 | a DWO CU, that this test will fail. */ | |
3742 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); | |
3743 | if (attr) | |
3744 | { | |
3745 | char *dwo_name = DW_STRING (attr); | |
3746 | const char *comp_dir; | |
3747 | struct dwo_unit *dwo_unit; | |
3748 | ULONGEST signature; /* Or dwo_id. */ | |
3749 | struct attribute *stmt_list, *low_pc, *high_pc, *ranges; | |
3750 | int i,num_extra_attrs; | |
3751 | ||
3752 | if (has_children) | |
3753 | error (_("Dwarf Error: compilation unit with DW_AT_GNU_dwo_name" | |
3754 | " has children (offset 0x%x) [in module %s]"), | |
3755 | this_cu->offset.sect_off, bfd_get_filename (abfd)); | |
3756 | ||
3757 | /* These attributes aren't processed until later: | |
3758 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
3759 | However, the attribute is found in the stub which we won't have later. | |
3760 | In order to not impose this complication on the rest of the code, | |
3761 | we read them here and copy them to the DWO CU/TU die. */ | |
3762 | stmt_list = low_pc = high_pc = ranges = NULL; | |
3763 | ||
3764 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
3765 | DWO file. */ | |
3766 | if (! this_cu->is_debug_types) | |
3767 | stmt_list = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); | |
3768 | low_pc = dwarf2_attr (comp_unit_die, DW_AT_low_pc, cu); | |
3769 | high_pc = dwarf2_attr (comp_unit_die, DW_AT_high_pc, cu); | |
3770 | ranges = dwarf2_attr (comp_unit_die, DW_AT_ranges, cu); | |
3771 | ||
3772 | /* There should be a DW_AT_addr_base attribute here (if needed). | |
3773 | We need the value before we can process DW_FORM_GNU_addr_index. */ | |
3774 | cu->addr_base = 0; | |
3775 | cu->have_addr_base = 0; | |
3776 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_addr_base, cu); | |
3777 | if (attr) | |
3778 | { | |
3779 | cu->addr_base = DW_UNSND (attr); | |
3780 | cu->have_addr_base = 1; | |
3781 | } | |
3782 | ||
3783 | if (this_cu->is_debug_types) | |
3784 | { | |
3785 | gdb_assert (sig_type != NULL); | |
3786 | signature = sig_type->signature; | |
3787 | } | |
3788 | else | |
3789 | { | |
3790 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
3791 | if (! attr) | |
3792 | error (_("Dwarf Error: missing dwo_id [in module %s]"), | |
3793 | dwo_name); | |
3794 | signature = DW_UNSND (attr); | |
3795 | } | |
3796 | ||
3797 | /* We may need the comp_dir in order to find the DWO file. */ | |
3798 | comp_dir = NULL; | |
3799 | attr = dwarf2_attr (comp_unit_die, DW_AT_comp_dir, cu); | |
3800 | if (attr) | |
3801 | comp_dir = DW_STRING (attr); | |
3802 | ||
3803 | if (this_cu->is_debug_types) | |
3804 | dwo_unit = lookup_dwo_type_unit (sig_type, dwo_name, comp_dir); | |
3805 | else | |
3806 | dwo_unit = lookup_dwo_comp_unit (this_cu, dwo_name, comp_dir, | |
3807 | signature); | |
3808 | ||
3809 | if (dwo_unit == NULL) | |
3810 | { | |
3811 | error (_("Dwarf Error: CU at offset 0x%x references unknown DWO" | |
3812 | " with ID %s [in module %s]"), | |
3813 | this_cu->offset.sect_off, | |
3814 | phex (signature, sizeof (signature)), | |
3815 | objfile->name); | |
3816 | } | |
3817 | ||
3818 | /* Set up for reading the DWO CU/TU. */ | |
3819 | cu->dwo_unit = dwo_unit; | |
3820 | section = dwo_unit->info_or_types_section; | |
3821 | begin_info_ptr = info_ptr = section->buffer + dwo_unit->offset.sect_off; | |
3822 | init_cu_die_reader (&reader, cu, section, dwo_unit->dwo_file); | |
3823 | ||
3824 | if (this_cu->is_debug_types) | |
3825 | { | |
3826 | ULONGEST signature; | |
3827 | ||
3828 | info_ptr = read_and_check_type_unit_head (&cu->header, | |
3829 | section, info_ptr, | |
3830 | &signature, NULL); | |
3831 | gdb_assert (sig_type->signature == signature); | |
3832 | gdb_assert (dwo_unit->offset.sect_off == cu->header.offset.sect_off); | |
3833 | gdb_assert (dwo_unit->length | |
3834 | == cu->header.length + cu->header.initial_length_size); | |
3835 | ||
3836 | /* Establish the type offset that can be used to lookup the type. | |
3837 | For DWO files, we don't know it until now. */ | |
3838 | sig_type->type_offset_in_section.sect_off = | |
3839 | dwo_unit->offset.sect_off + dwo_unit->type_offset_in_tu.cu_off; | |
3840 | } | |
3841 | else | |
3842 | { | |
3843 | info_ptr = read_and_check_comp_unit_head (&cu->header, | |
3844 | section, info_ptr, 0); | |
3845 | gdb_assert (dwo_unit->offset.sect_off == cu->header.offset.sect_off); | |
3846 | gdb_assert (dwo_unit->length | |
3847 | == cu->header.length + cu->header.initial_length_size); | |
3848 | } | |
3849 | ||
3850 | /* Discard the original CU's abbrev table, and read the DWO's. */ | |
3851 | dwarf2_free_abbrev_table (cu); | |
3852 | dwarf2_read_abbrevs (cu, &dwo_unit->dwo_file->sections.abbrev); | |
3853 | ||
3854 | /* Read in the die, but leave space to copy over the attributes | |
3855 | from the stub. This has the benefit of simplifying the rest of | |
3856 | the code - all the real work is done here. */ | |
3857 | num_extra_attrs = ((stmt_list != NULL) | |
3858 | + (low_pc != NULL) | |
3859 | + (high_pc != NULL) | |
3860 | + (ranges != NULL)); | |
3861 | info_ptr = read_full_die_1 (&reader, &comp_unit_die, info_ptr, | |
3862 | &has_children, num_extra_attrs); | |
3863 | ||
3864 | /* Copy over the attributes from the stub to the DWO die. */ | |
3865 | i = comp_unit_die->num_attrs; | |
3866 | if (stmt_list != NULL) | |
3867 | comp_unit_die->attrs[i++] = *stmt_list; | |
3868 | if (low_pc != NULL) | |
3869 | comp_unit_die->attrs[i++] = *low_pc; | |
3870 | if (high_pc != NULL) | |
3871 | comp_unit_die->attrs[i++] = *high_pc; | |
3872 | if (ranges != NULL) | |
3873 | comp_unit_die->attrs[i++] = *ranges; | |
3874 | comp_unit_die->num_attrs += num_extra_attrs; | |
3875 | ||
3876 | /* Skip dummy compilation units. */ | |
3877 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
3878 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
3879 | { | |
3880 | do_cleanups (cleanups); | |
3881 | return; | |
3882 | } | |
3883 | } | |
3884 | ||
dee91e82 DE |
3885 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); |
3886 | ||
3887 | if (free_cu_cleanup != NULL) | |
348e048f | 3888 | { |
dee91e82 DE |
3889 | if (keep) |
3890 | { | |
3891 | /* We've successfully allocated this compilation unit. Let our | |
3892 | caller clean it up when finished with it. */ | |
3893 | discard_cleanups (free_cu_cleanup); | |
3894 | ||
3895 | /* We can only discard free_cu_cleanup and all subsequent cleanups. | |
3896 | So we have to manually free the abbrev table. */ | |
3897 | dwarf2_free_abbrev_table (cu); | |
3898 | ||
3899 | /* Link this CU into read_in_chain. */ | |
3900 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
3901 | dwarf2_per_objfile->read_in_chain = this_cu; | |
3902 | } | |
3903 | else | |
3904 | do_cleanups (free_cu_cleanup); | |
348e048f | 3905 | } |
dee91e82 DE |
3906 | |
3907 | do_cleanups (cleanups); | |
3908 | } | |
3909 | ||
3019eac3 DE |
3910 | /* Read CU/TU THIS_CU in section SECTION, |
3911 | but do not follow DW_AT_GNU_dwo_name if present. | |
3912 | DWO_FILE, if non-NULL, is the DWO file to read (the caller is assumed to | |
3913 | have already done the lookup to find the DWO file). | |
dee91e82 DE |
3914 | |
3915 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 3916 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
3917 | |
3918 | We fill in THIS_CU->length. | |
3919 | ||
3920 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
3921 | linker) then DIE_READER_FUNC will not get called. | |
3922 | ||
3923 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
3924 | This is done in order to not leave THIS_CU->cu in a state where we have |
3925 | to care whether it refers to the "main" CU or the DWO CU. */ | |
dee91e82 DE |
3926 | |
3927 | static void | |
3928 | init_cutu_and_read_dies_no_follow (struct dwarf2_per_cu_data *this_cu, | |
3929 | struct dwarf2_section_info *abbrev_section, | |
3019eac3 | 3930 | struct dwo_file *dwo_file, |
dee91e82 DE |
3931 | die_reader_func_ftype *die_reader_func, |
3932 | void *data) | |
3933 | { | |
3934 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
3019eac3 DE |
3935 | struct dwarf2_section_info *section = this_cu->info_or_types_section; |
3936 | bfd *abfd = section->asection->owner; | |
dee91e82 DE |
3937 | struct dwarf2_cu cu; |
3938 | gdb_byte *begin_info_ptr, *info_ptr; | |
3939 | struct die_reader_specs reader; | |
3940 | struct cleanup *cleanups; | |
3941 | struct die_info *comp_unit_die; | |
3942 | int has_children; | |
3943 | ||
3944 | gdb_assert (this_cu->cu == NULL); | |
3945 | ||
dee91e82 DE |
3946 | /* This is cheap if the section is already read in. */ |
3947 | dwarf2_read_section (objfile, section); | |
3948 | ||
3949 | init_one_comp_unit (&cu, this_cu); | |
3950 | ||
3951 | cleanups = make_cleanup (free_stack_comp_unit, &cu); | |
3952 | ||
3953 | begin_info_ptr = info_ptr = section->buffer + this_cu->offset.sect_off; | |
3954 | info_ptr = read_and_check_comp_unit_head (&cu.header, section, info_ptr, | |
3019eac3 | 3955 | this_cu->is_debug_types); |
dee91e82 DE |
3956 | |
3957 | this_cu->length = cu.header.length + cu.header.initial_length_size; | |
3958 | ||
3959 | /* Skip dummy compilation units. */ | |
3960 | if (info_ptr >= begin_info_ptr + this_cu->length | |
3961 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
c906108c | 3962 | { |
dee91e82 | 3963 | do_cleanups (cleanups); |
21b2bd31 | 3964 | return; |
93311388 | 3965 | } |
72bf9492 | 3966 | |
dee91e82 DE |
3967 | dwarf2_read_abbrevs (&cu, abbrev_section); |
3968 | make_cleanup (dwarf2_free_abbrev_table, &cu); | |
3969 | ||
3019eac3 | 3970 | init_cu_die_reader (&reader, &cu, section, dwo_file); |
dee91e82 DE |
3971 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
3972 | ||
3973 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
3974 | ||
3975 | do_cleanups (cleanups); | |
3976 | } | |
3977 | ||
3019eac3 DE |
3978 | /* Read a CU/TU, except that this does not look for DW_AT_GNU_dwo_name and |
3979 | does not lookup the specified DWO file. | |
3980 | This cannot be used to read DWO files. | |
dee91e82 DE |
3981 | |
3982 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
3983 | This is done in order to not leave THIS_CU->cu in a state where we have |
3984 | to care whether it refers to the "main" CU or the DWO CU. | |
3985 | We can revisit this if the data shows there's a performance issue. */ | |
dee91e82 DE |
3986 | |
3987 | static void | |
3988 | init_cutu_and_read_dies_simple (struct dwarf2_per_cu_data *this_cu, | |
3989 | die_reader_func_ftype *die_reader_func, | |
3990 | void *data) | |
3991 | { | |
3992 | init_cutu_and_read_dies_no_follow (this_cu, | |
3993 | &dwarf2_per_objfile->abbrev, | |
3019eac3 | 3994 | NULL, |
dee91e82 DE |
3995 | die_reader_func, data); |
3996 | } | |
3997 | ||
3998 | /* die_reader_func for process_psymtab_comp_unit. */ | |
3999 | ||
4000 | static void | |
4001 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
4002 | gdb_byte *info_ptr, | |
4003 | struct die_info *comp_unit_die, | |
4004 | int has_children, | |
4005 | void *data) | |
4006 | { | |
4007 | struct dwarf2_cu *cu = reader->cu; | |
4008 | struct objfile *objfile = cu->objfile; | |
4009 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
4010 | bfd *abfd = objfile->obfd; | |
4011 | struct attribute *attr; | |
4012 | CORE_ADDR baseaddr; | |
4013 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
4014 | struct partial_symtab *pst; | |
4015 | int has_pc_info; | |
4016 | const char *filename; | |
4017 | ||
4018 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
4019 | return; | |
4020 | ||
4021 | prepare_one_comp_unit (cu, comp_unit_die); | |
4022 | ||
4023 | cu->list_in_scope = &file_symbols; | |
c906108c | 4024 | |
93311388 | 4025 | /* Allocate a new partial symbol table structure. */ |
dee91e82 | 4026 | attr = dwarf2_attr (comp_unit_die, DW_AT_name, cu); |
3e2a0cee TT |
4027 | if (attr == NULL || !DW_STRING (attr)) |
4028 | filename = ""; | |
4029 | else | |
4030 | filename = DW_STRING (attr); | |
93311388 | 4031 | pst = start_psymtab_common (objfile, objfile->section_offsets, |
3e2a0cee | 4032 | filename, |
93311388 DE |
4033 | /* TEXTLOW and TEXTHIGH are set below. */ |
4034 | 0, | |
4035 | objfile->global_psymbols.next, | |
4036 | objfile->static_psymbols.next); | |
9750bca9 | 4037 | pst->psymtabs_addrmap_supported = 1; |
72bf9492 | 4038 | |
dee91e82 | 4039 | attr = dwarf2_attr (comp_unit_die, DW_AT_comp_dir, cu); |
d85a05f0 DJ |
4040 | if (attr != NULL) |
4041 | pst->dirname = DW_STRING (attr); | |
72bf9492 | 4042 | |
dee91e82 | 4043 | pst->read_symtab_private = per_cu; |
72bf9492 | 4044 | |
93311388 | 4045 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
e7c27a73 | 4046 | |
0963b4bd | 4047 | /* Store the function that reads in the rest of the symbol table. */ |
93311388 | 4048 | pst->read_symtab = dwarf2_psymtab_to_symtab; |
57349743 | 4049 | |
dee91e82 | 4050 | per_cu->v.psymtab = pst; |
c906108c | 4051 | |
dee91e82 | 4052 | dwarf2_find_base_address (comp_unit_die, cu); |
d85a05f0 | 4053 | |
93311388 DE |
4054 | /* Possibly set the default values of LOWPC and HIGHPC from |
4055 | `DW_AT_ranges'. */ | |
d85a05f0 | 4056 | has_pc_info = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
dee91e82 | 4057 | &best_highpc, cu, pst); |
d85a05f0 | 4058 | if (has_pc_info == 1 && best_lowpc < best_highpc) |
93311388 DE |
4059 | /* Store the contiguous range if it is not empty; it can be empty for |
4060 | CUs with no code. */ | |
4061 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
d85a05f0 DJ |
4062 | best_lowpc + baseaddr, |
4063 | best_highpc + baseaddr - 1, pst); | |
93311388 DE |
4064 | |
4065 | /* Check if comp unit has_children. | |
4066 | If so, read the rest of the partial symbols from this comp unit. | |
0963b4bd | 4067 | If not, there's no more debug_info for this comp unit. */ |
d85a05f0 | 4068 | if (has_children) |
93311388 DE |
4069 | { |
4070 | struct partial_die_info *first_die; | |
4071 | CORE_ADDR lowpc, highpc; | |
31ffec48 | 4072 | |
93311388 DE |
4073 | lowpc = ((CORE_ADDR) -1); |
4074 | highpc = ((CORE_ADDR) 0); | |
c906108c | 4075 | |
dee91e82 | 4076 | first_die = load_partial_dies (reader, info_ptr, 1); |
c906108c | 4077 | |
93311388 | 4078 | scan_partial_symbols (first_die, &lowpc, &highpc, |
dee91e82 | 4079 | ! has_pc_info, cu); |
57c22c6c | 4080 | |
93311388 DE |
4081 | /* If we didn't find a lowpc, set it to highpc to avoid |
4082 | complaints from `maint check'. */ | |
4083 | if (lowpc == ((CORE_ADDR) -1)) | |
4084 | lowpc = highpc; | |
10b3939b | 4085 | |
93311388 DE |
4086 | /* If the compilation unit didn't have an explicit address range, |
4087 | then use the information extracted from its child dies. */ | |
d85a05f0 | 4088 | if (! has_pc_info) |
93311388 | 4089 | { |
d85a05f0 DJ |
4090 | best_lowpc = lowpc; |
4091 | best_highpc = highpc; | |
93311388 DE |
4092 | } |
4093 | } | |
d85a05f0 DJ |
4094 | pst->textlow = best_lowpc + baseaddr; |
4095 | pst->texthigh = best_highpc + baseaddr; | |
c906108c | 4096 | |
93311388 DE |
4097 | pst->n_global_syms = objfile->global_psymbols.next - |
4098 | (objfile->global_psymbols.list + pst->globals_offset); | |
4099 | pst->n_static_syms = objfile->static_psymbols.next - | |
4100 | (objfile->static_psymbols.list + pst->statics_offset); | |
4101 | sort_pst_symbols (pst); | |
c906108c | 4102 | |
3019eac3 | 4103 | if (per_cu->is_debug_types) |
348e048f DE |
4104 | { |
4105 | /* It's not clear we want to do anything with stmt lists here. | |
4106 | Waiting to see what gcc ultimately does. */ | |
4107 | } | |
d85a05f0 | 4108 | else |
93311388 DE |
4109 | { |
4110 | /* Get the list of files included in the current compilation unit, | |
4111 | and build a psymtab for each of them. */ | |
dee91e82 | 4112 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); |
93311388 | 4113 | } |
dee91e82 | 4114 | } |
ae038cb0 | 4115 | |
dee91e82 DE |
4116 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. |
4117 | Process compilation unit THIS_CU for a psymtab. */ | |
4118 | ||
4119 | static void | |
4120 | process_psymtab_comp_unit (struct dwarf2_per_cu_data *this_cu) | |
4121 | { | |
4122 | /* If this compilation unit was already read in, free the | |
4123 | cached copy in order to read it in again. This is | |
4124 | necessary because we skipped some symbols when we first | |
4125 | read in the compilation unit (see load_partial_dies). | |
4126 | This problem could be avoided, but the benefit is unclear. */ | |
4127 | if (this_cu->cu != NULL) | |
4128 | free_one_cached_comp_unit (this_cu); | |
4129 | ||
3019eac3 | 4130 | gdb_assert (! this_cu->is_debug_types); |
fd820528 DE |
4131 | init_cutu_and_read_dies (this_cu, 0, 0, process_psymtab_comp_unit_reader, |
4132 | NULL); | |
dee91e82 DE |
4133 | |
4134 | /* Age out any secondary CUs. */ | |
4135 | age_cached_comp_units (); | |
93311388 | 4136 | } |
ff013f42 | 4137 | |
348e048f DE |
4138 | /* Traversal function for htab_traverse_noresize. |
4139 | Process one .debug_types comp-unit. */ | |
4140 | ||
4141 | static int | |
dee91e82 | 4142 | process_psymtab_type_unit (void **slot, void *info) |
348e048f | 4143 | { |
dee91e82 DE |
4144 | struct signatured_type *sig_type = (struct signatured_type *) *slot; |
4145 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 4146 | |
fd820528 | 4147 | gdb_assert (per_cu->is_debug_types); |
a0f42c21 | 4148 | gdb_assert (info == NULL); |
348e048f | 4149 | |
dee91e82 DE |
4150 | /* If this compilation unit was already read in, free the |
4151 | cached copy in order to read it in again. This is | |
4152 | necessary because we skipped some symbols when we first | |
4153 | read in the compilation unit (see load_partial_dies). | |
4154 | This problem could be avoided, but the benefit is unclear. */ | |
4155 | if (per_cu->cu != NULL) | |
4156 | free_one_cached_comp_unit (per_cu); | |
4157 | ||
fd820528 DE |
4158 | init_cutu_and_read_dies (per_cu, 0, 0, process_psymtab_comp_unit_reader, |
4159 | NULL); | |
dee91e82 DE |
4160 | |
4161 | /* Age out any secondary CUs. */ | |
4162 | age_cached_comp_units (); | |
348e048f DE |
4163 | |
4164 | return 1; | |
4165 | } | |
4166 | ||
4167 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
4168 | Build partial symbol tables for the .debug_types comp-units. */ | |
4169 | ||
4170 | static void | |
4171 | build_type_psymtabs (struct objfile *objfile) | |
4172 | { | |
0e50663e | 4173 | if (! create_all_type_units (objfile)) |
348e048f DE |
4174 | return; |
4175 | ||
4176 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types, | |
dee91e82 | 4177 | process_psymtab_type_unit, NULL); |
348e048f DE |
4178 | } |
4179 | ||
60606b2c TT |
4180 | /* A cleanup function that clears objfile's psymtabs_addrmap field. */ |
4181 | ||
4182 | static void | |
4183 | psymtabs_addrmap_cleanup (void *o) | |
4184 | { | |
4185 | struct objfile *objfile = o; | |
ec61707d | 4186 | |
60606b2c TT |
4187 | objfile->psymtabs_addrmap = NULL; |
4188 | } | |
4189 | ||
93311388 DE |
4190 | /* Build the partial symbol table by doing a quick pass through the |
4191 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 4192 | |
93311388 | 4193 | static void |
c67a9c90 | 4194 | dwarf2_build_psymtabs_hard (struct objfile *objfile) |
93311388 | 4195 | { |
60606b2c TT |
4196 | struct cleanup *back_to, *addrmap_cleanup; |
4197 | struct obstack temp_obstack; | |
21b2bd31 | 4198 | int i; |
93311388 | 4199 | |
98bfdba5 PA |
4200 | dwarf2_per_objfile->reading_partial_symbols = 1; |
4201 | ||
be391dca | 4202 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
91c24f0a | 4203 | |
93311388 DE |
4204 | /* Any cached compilation units will be linked by the per-objfile |
4205 | read_in_chain. Make sure to free them when we're done. */ | |
4206 | back_to = make_cleanup (free_cached_comp_units, NULL); | |
72bf9492 | 4207 | |
348e048f DE |
4208 | build_type_psymtabs (objfile); |
4209 | ||
93311388 | 4210 | create_all_comp_units (objfile); |
c906108c | 4211 | |
60606b2c TT |
4212 | /* Create a temporary address map on a temporary obstack. We later |
4213 | copy this to the final obstack. */ | |
4214 | obstack_init (&temp_obstack); | |
4215 | make_cleanup_obstack_free (&temp_obstack); | |
4216 | objfile->psymtabs_addrmap = addrmap_create_mutable (&temp_obstack); | |
4217 | addrmap_cleanup = make_cleanup (psymtabs_addrmap_cleanup, objfile); | |
72bf9492 | 4218 | |
21b2bd31 | 4219 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
93311388 | 4220 | { |
21b2bd31 | 4221 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
aaa75496 | 4222 | |
dee91e82 | 4223 | process_psymtab_comp_unit (per_cu); |
c906108c | 4224 | } |
ff013f42 JK |
4225 | |
4226 | objfile->psymtabs_addrmap = addrmap_create_fixed (objfile->psymtabs_addrmap, | |
4227 | &objfile->objfile_obstack); | |
60606b2c | 4228 | discard_cleanups (addrmap_cleanup); |
ff013f42 | 4229 | |
ae038cb0 DJ |
4230 | do_cleanups (back_to); |
4231 | } | |
4232 | ||
3019eac3 | 4233 | /* die_reader_func for load_partial_comp_unit. */ |
ae038cb0 DJ |
4234 | |
4235 | static void | |
dee91e82 DE |
4236 | load_partial_comp_unit_reader (const struct die_reader_specs *reader, |
4237 | gdb_byte *info_ptr, | |
4238 | struct die_info *comp_unit_die, | |
4239 | int has_children, | |
4240 | void *data) | |
ae038cb0 | 4241 | { |
dee91e82 | 4242 | struct dwarf2_cu *cu = reader->cu; |
ae038cb0 | 4243 | |
9816fde3 | 4244 | prepare_one_comp_unit (cu, comp_unit_die); |
ae038cb0 | 4245 | |
ae038cb0 DJ |
4246 | /* Check if comp unit has_children. |
4247 | If so, read the rest of the partial symbols from this comp unit. | |
0963b4bd | 4248 | If not, there's no more debug_info for this comp unit. */ |
d85a05f0 | 4249 | if (has_children) |
dee91e82 DE |
4250 | load_partial_dies (reader, info_ptr, 0); |
4251 | } | |
98bfdba5 | 4252 | |
dee91e82 DE |
4253 | /* Load the partial DIEs for a secondary CU into memory. |
4254 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 4255 | |
dee91e82 DE |
4256 | static void |
4257 | load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu) | |
4258 | { | |
fd820528 | 4259 | init_cutu_and_read_dies (this_cu, 1, 1, load_partial_comp_unit_reader, NULL); |
ae038cb0 DJ |
4260 | } |
4261 | ||
9cdd5dbd DE |
4262 | /* Create a list of all compilation units in OBJFILE. |
4263 | This is only done for -readnow and building partial symtabs. */ | |
ae038cb0 DJ |
4264 | |
4265 | static void | |
4266 | create_all_comp_units (struct objfile *objfile) | |
4267 | { | |
4268 | int n_allocated; | |
4269 | int n_comp_units; | |
4270 | struct dwarf2_per_cu_data **all_comp_units; | |
be391dca TT |
4271 | gdb_byte *info_ptr; |
4272 | ||
4273 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); | |
4274 | info_ptr = dwarf2_per_objfile->info.buffer; | |
ae038cb0 DJ |
4275 | |
4276 | n_comp_units = 0; | |
4277 | n_allocated = 10; | |
4278 | all_comp_units = xmalloc (n_allocated | |
4279 | * sizeof (struct dwarf2_per_cu_data *)); | |
6e70227d | 4280 | |
3e43a32a MS |
4281 | while (info_ptr < dwarf2_per_objfile->info.buffer |
4282 | + dwarf2_per_objfile->info.size) | |
ae038cb0 | 4283 | { |
c764a876 | 4284 | unsigned int length, initial_length_size; |
ae038cb0 | 4285 | struct dwarf2_per_cu_data *this_cu; |
b64f50a1 | 4286 | sect_offset offset; |
ae038cb0 | 4287 | |
b64f50a1 | 4288 | offset.sect_off = info_ptr - dwarf2_per_objfile->info.buffer; |
ae038cb0 DJ |
4289 | |
4290 | /* Read just enough information to find out where the next | |
4291 | compilation unit is. */ | |
c764a876 DE |
4292 | length = read_initial_length (objfile->obfd, info_ptr, |
4293 | &initial_length_size); | |
ae038cb0 DJ |
4294 | |
4295 | /* Save the compilation unit for later lookup. */ | |
4296 | this_cu = obstack_alloc (&objfile->objfile_obstack, | |
4297 | sizeof (struct dwarf2_per_cu_data)); | |
4298 | memset (this_cu, 0, sizeof (*this_cu)); | |
4299 | this_cu->offset = offset; | |
c764a876 | 4300 | this_cu->length = length + initial_length_size; |
9291a0cd | 4301 | this_cu->objfile = objfile; |
3019eac3 | 4302 | this_cu->info_or_types_section = &dwarf2_per_objfile->info; |
ae038cb0 DJ |
4303 | |
4304 | if (n_comp_units == n_allocated) | |
4305 | { | |
4306 | n_allocated *= 2; | |
4307 | all_comp_units = xrealloc (all_comp_units, | |
4308 | n_allocated | |
4309 | * sizeof (struct dwarf2_per_cu_data *)); | |
4310 | } | |
4311 | all_comp_units[n_comp_units++] = this_cu; | |
4312 | ||
4313 | info_ptr = info_ptr + this_cu->length; | |
4314 | } | |
4315 | ||
4316 | dwarf2_per_objfile->all_comp_units | |
4317 | = obstack_alloc (&objfile->objfile_obstack, | |
4318 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
4319 | memcpy (dwarf2_per_objfile->all_comp_units, all_comp_units, | |
4320 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
4321 | xfree (all_comp_units); | |
4322 | dwarf2_per_objfile->n_comp_units = n_comp_units; | |
c906108c SS |
4323 | } |
4324 | ||
5734ee8b DJ |
4325 | /* Process all loaded DIEs for compilation unit CU, starting at |
4326 | FIRST_DIE. The caller should pass NEED_PC == 1 if the compilation | |
4327 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or | |
4328 | DW_AT_ranges). If NEED_PC is set, then this function will set | |
4329 | *LOWPC and *HIGHPC to the lowest and highest PC values found in CU | |
4330 | and record the covered ranges in the addrmap. */ | |
c906108c | 4331 | |
72bf9492 DJ |
4332 | static void |
4333 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
5734ee8b | 4334 | CORE_ADDR *highpc, int need_pc, struct dwarf2_cu *cu) |
c906108c | 4335 | { |
72bf9492 | 4336 | struct partial_die_info *pdi; |
c906108c | 4337 | |
91c24f0a DC |
4338 | /* Now, march along the PDI's, descending into ones which have |
4339 | interesting children but skipping the children of the other ones, | |
4340 | until we reach the end of the compilation unit. */ | |
c906108c | 4341 | |
72bf9492 | 4342 | pdi = first_die; |
91c24f0a | 4343 | |
72bf9492 DJ |
4344 | while (pdi != NULL) |
4345 | { | |
4346 | fixup_partial_die (pdi, cu); | |
c906108c | 4347 | |
f55ee35c | 4348 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
4349 | children, so we need to look at them. Ditto for anonymous |
4350 | enums. */ | |
933c6fe4 | 4351 | |
72bf9492 | 4352 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
f55ee35c | 4353 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type) |
c906108c | 4354 | { |
72bf9492 | 4355 | switch (pdi->tag) |
c906108c SS |
4356 | { |
4357 | case DW_TAG_subprogram: | |
5734ee8b | 4358 | add_partial_subprogram (pdi, lowpc, highpc, need_pc, cu); |
c906108c | 4359 | break; |
72929c62 | 4360 | case DW_TAG_constant: |
c906108c SS |
4361 | case DW_TAG_variable: |
4362 | case DW_TAG_typedef: | |
91c24f0a | 4363 | case DW_TAG_union_type: |
72bf9492 | 4364 | if (!pdi->is_declaration) |
63d06c5c | 4365 | { |
72bf9492 | 4366 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
4367 | } |
4368 | break; | |
c906108c | 4369 | case DW_TAG_class_type: |
680b30c7 | 4370 | case DW_TAG_interface_type: |
c906108c | 4371 | case DW_TAG_structure_type: |
72bf9492 | 4372 | if (!pdi->is_declaration) |
c906108c | 4373 | { |
72bf9492 | 4374 | add_partial_symbol (pdi, cu); |
c906108c SS |
4375 | } |
4376 | break; | |
91c24f0a | 4377 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
4378 | if (!pdi->is_declaration) |
4379 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
4380 | break; |
4381 | case DW_TAG_base_type: | |
a02abb62 | 4382 | case DW_TAG_subrange_type: |
c906108c | 4383 | /* File scope base type definitions are added to the partial |
c5aa993b | 4384 | symbol table. */ |
72bf9492 | 4385 | add_partial_symbol (pdi, cu); |
c906108c | 4386 | break; |
d9fa45fe | 4387 | case DW_TAG_namespace: |
5734ee8b | 4388 | add_partial_namespace (pdi, lowpc, highpc, need_pc, cu); |
91c24f0a | 4389 | break; |
5d7cb8df JK |
4390 | case DW_TAG_module: |
4391 | add_partial_module (pdi, lowpc, highpc, need_pc, cu); | |
4392 | break; | |
c906108c SS |
4393 | default: |
4394 | break; | |
4395 | } | |
4396 | } | |
4397 | ||
72bf9492 DJ |
4398 | /* If the die has a sibling, skip to the sibling. */ |
4399 | ||
4400 | pdi = pdi->die_sibling; | |
4401 | } | |
4402 | } | |
4403 | ||
4404 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 4405 | |
72bf9492 | 4406 | Normally, this is simple. For C++, the parent DIE's fully scoped |
987504bb JJ |
4407 | name is concatenated with "::" and the partial DIE's name. For |
4408 | Java, the same thing occurs except that "." is used instead of "::". | |
72bf9492 DJ |
4409 | Enumerators are an exception; they use the scope of their parent |
4410 | enumeration type, i.e. the name of the enumeration type is not | |
4411 | prepended to the enumerator. | |
91c24f0a | 4412 | |
72bf9492 DJ |
4413 | There are two complexities. One is DW_AT_specification; in this |
4414 | case "parent" means the parent of the target of the specification, | |
4415 | instead of the direct parent of the DIE. The other is compilers | |
4416 | which do not emit DW_TAG_namespace; in this case we try to guess | |
4417 | the fully qualified name of structure types from their members' | |
4418 | linkage names. This must be done using the DIE's children rather | |
4419 | than the children of any DW_AT_specification target. We only need | |
4420 | to do this for structures at the top level, i.e. if the target of | |
4421 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
4422 | have a parent. */ | |
4423 | ||
4424 | /* Compute the scope prefix associated with PDI's parent, in | |
4425 | compilation unit CU. The result will be allocated on CU's | |
4426 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
4427 | field. NULL is returned if no prefix is necessary. */ | |
4428 | static char * | |
4429 | partial_die_parent_scope (struct partial_die_info *pdi, | |
4430 | struct dwarf2_cu *cu) | |
4431 | { | |
4432 | char *grandparent_scope; | |
4433 | struct partial_die_info *parent, *real_pdi; | |
91c24f0a | 4434 | |
72bf9492 DJ |
4435 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
4436 | then this means the parent of the specification DIE. */ | |
4437 | ||
4438 | real_pdi = pdi; | |
72bf9492 | 4439 | while (real_pdi->has_specification) |
10b3939b | 4440 | real_pdi = find_partial_die (real_pdi->spec_offset, cu); |
72bf9492 DJ |
4441 | |
4442 | parent = real_pdi->die_parent; | |
4443 | if (parent == NULL) | |
4444 | return NULL; | |
4445 | ||
4446 | if (parent->scope_set) | |
4447 | return parent->scope; | |
4448 | ||
4449 | fixup_partial_die (parent, cu); | |
4450 | ||
10b3939b | 4451 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 4452 | |
acebe513 UW |
4453 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
4454 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
4455 | Work around this problem here. */ | |
4456 | if (cu->language == language_cplus | |
6e70227d | 4457 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
4458 | && strcmp (parent->name, "::") == 0 |
4459 | && grandparent_scope == NULL) | |
4460 | { | |
4461 | parent->scope = NULL; | |
4462 | parent->scope_set = 1; | |
4463 | return NULL; | |
4464 | } | |
4465 | ||
9c6c53f7 SA |
4466 | if (pdi->tag == DW_TAG_enumerator) |
4467 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
4468 | parent->scope = grandparent_scope; | |
4469 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 4470 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
4471 | || parent->tag == DW_TAG_structure_type |
4472 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 4473 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a TT |
4474 | || parent->tag == DW_TAG_union_type |
4475 | || parent->tag == DW_TAG_enumeration_type) | |
72bf9492 DJ |
4476 | { |
4477 | if (grandparent_scope == NULL) | |
4478 | parent->scope = parent->name; | |
4479 | else | |
3e43a32a MS |
4480 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
4481 | grandparent_scope, | |
f55ee35c | 4482 | parent->name, 0, cu); |
72bf9492 | 4483 | } |
72bf9492 DJ |
4484 | else |
4485 | { | |
4486 | /* FIXME drow/2004-04-01: What should we be doing with | |
4487 | function-local names? For partial symbols, we should probably be | |
4488 | ignoring them. */ | |
4489 | complaint (&symfile_complaints, | |
e2e0b3e5 | 4490 | _("unhandled containing DIE tag %d for DIE at %d"), |
b64f50a1 | 4491 | parent->tag, pdi->offset.sect_off); |
72bf9492 | 4492 | parent->scope = grandparent_scope; |
c906108c SS |
4493 | } |
4494 | ||
72bf9492 DJ |
4495 | parent->scope_set = 1; |
4496 | return parent->scope; | |
4497 | } | |
4498 | ||
4499 | /* Return the fully scoped name associated with PDI, from compilation unit | |
4500 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 4501 | |
72bf9492 DJ |
4502 | static char * |
4503 | partial_die_full_name (struct partial_die_info *pdi, | |
4504 | struct dwarf2_cu *cu) | |
4505 | { | |
4506 | char *parent_scope; | |
4507 | ||
98bfdba5 PA |
4508 | /* If this is a template instantiation, we can not work out the |
4509 | template arguments from partial DIEs. So, unfortunately, we have | |
4510 | to go through the full DIEs. At least any work we do building | |
4511 | types here will be reused if full symbols are loaded later. */ | |
4512 | if (pdi->has_template_arguments) | |
4513 | { | |
4514 | fixup_partial_die (pdi, cu); | |
4515 | ||
4516 | if (pdi->name != NULL && strchr (pdi->name, '<') == NULL) | |
4517 | { | |
4518 | struct die_info *die; | |
4519 | struct attribute attr; | |
4520 | struct dwarf2_cu *ref_cu = cu; | |
4521 | ||
b64f50a1 | 4522 | /* DW_FORM_ref_addr is using section offset. */ |
98bfdba5 PA |
4523 | attr.name = 0; |
4524 | attr.form = DW_FORM_ref_addr; | |
4568ecf9 | 4525 | attr.u.unsnd = pdi->offset.sect_off; |
98bfdba5 PA |
4526 | die = follow_die_ref (NULL, &attr, &ref_cu); |
4527 | ||
4528 | return xstrdup (dwarf2_full_name (NULL, die, ref_cu)); | |
4529 | } | |
4530 | } | |
4531 | ||
72bf9492 DJ |
4532 | parent_scope = partial_die_parent_scope (pdi, cu); |
4533 | if (parent_scope == NULL) | |
4534 | return NULL; | |
4535 | else | |
f55ee35c | 4536 | return typename_concat (NULL, parent_scope, pdi->name, 0, cu); |
c906108c SS |
4537 | } |
4538 | ||
4539 | static void | |
72bf9492 | 4540 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 4541 | { |
e7c27a73 | 4542 | struct objfile *objfile = cu->objfile; |
c906108c | 4543 | CORE_ADDR addr = 0; |
decbce07 | 4544 | char *actual_name = NULL; |
e142c38c | 4545 | CORE_ADDR baseaddr; |
72bf9492 | 4546 | int built_actual_name = 0; |
e142c38c DJ |
4547 | |
4548 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 4549 | |
94af9270 KS |
4550 | actual_name = partial_die_full_name (pdi, cu); |
4551 | if (actual_name) | |
4552 | built_actual_name = 1; | |
63d06c5c | 4553 | |
72bf9492 DJ |
4554 | if (actual_name == NULL) |
4555 | actual_name = pdi->name; | |
4556 | ||
c906108c SS |
4557 | switch (pdi->tag) |
4558 | { | |
4559 | case DW_TAG_subprogram: | |
2cfa0c8d | 4560 | if (pdi->is_external || cu->language == language_ada) |
c906108c | 4561 | { |
2cfa0c8d JB |
4562 | /* brobecker/2007-12-26: Normally, only "external" DIEs are part |
4563 | of the global scope. But in Ada, we want to be able to access | |
4564 | nested procedures globally. So all Ada subprograms are stored | |
4565 | in the global scope. */ | |
f47fb265 | 4566 | /* prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 4567 | mst_text, objfile); */ |
f47fb265 MS |
4568 | add_psymbol_to_list (actual_name, strlen (actual_name), |
4569 | built_actual_name, | |
4570 | VAR_DOMAIN, LOC_BLOCK, | |
4571 | &objfile->global_psymbols, | |
4572 | 0, pdi->lowpc + baseaddr, | |
4573 | cu->language, objfile); | |
c906108c SS |
4574 | } |
4575 | else | |
4576 | { | |
f47fb265 | 4577 | /* prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 4578 | mst_file_text, objfile); */ |
f47fb265 MS |
4579 | add_psymbol_to_list (actual_name, strlen (actual_name), |
4580 | built_actual_name, | |
4581 | VAR_DOMAIN, LOC_BLOCK, | |
4582 | &objfile->static_psymbols, | |
4583 | 0, pdi->lowpc + baseaddr, | |
4584 | cu->language, objfile); | |
c906108c SS |
4585 | } |
4586 | break; | |
72929c62 JB |
4587 | case DW_TAG_constant: |
4588 | { | |
4589 | struct psymbol_allocation_list *list; | |
4590 | ||
4591 | if (pdi->is_external) | |
4592 | list = &objfile->global_psymbols; | |
4593 | else | |
4594 | list = &objfile->static_psymbols; | |
f47fb265 MS |
4595 | add_psymbol_to_list (actual_name, strlen (actual_name), |
4596 | built_actual_name, VAR_DOMAIN, LOC_STATIC, | |
4597 | list, 0, 0, cu->language, objfile); | |
72929c62 JB |
4598 | } |
4599 | break; | |
c906108c | 4600 | case DW_TAG_variable: |
caac4577 JG |
4601 | if (pdi->locdesc) |
4602 | addr = decode_locdesc (pdi->locdesc, cu); | |
4603 | ||
4604 | if (pdi->locdesc | |
4605 | && addr == 0 | |
4606 | && !dwarf2_per_objfile->has_section_at_zero) | |
4607 | { | |
4608 | /* A global or static variable may also have been stripped | |
4609 | out by the linker if unused, in which case its address | |
4610 | will be nullified; do not add such variables into partial | |
4611 | symbol table then. */ | |
4612 | } | |
4613 | else if (pdi->is_external) | |
c906108c SS |
4614 | { |
4615 | /* Global Variable. | |
4616 | Don't enter into the minimal symbol tables as there is | |
4617 | a minimal symbol table entry from the ELF symbols already. | |
4618 | Enter into partial symbol table if it has a location | |
4619 | descriptor or a type. | |
4620 | If the location descriptor is missing, new_symbol will create | |
4621 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
4622 | be determined from the minimal symbol table whenever the variable | |
4623 | is referenced. | |
4624 | The address for the partial symbol table entry is not | |
4625 | used by GDB, but it comes in handy for debugging partial symbol | |
4626 | table building. */ | |
4627 | ||
c906108c | 4628 | if (pdi->locdesc || pdi->has_type) |
f47fb265 MS |
4629 | add_psymbol_to_list (actual_name, strlen (actual_name), |
4630 | built_actual_name, | |
4631 | VAR_DOMAIN, LOC_STATIC, | |
4632 | &objfile->global_psymbols, | |
4633 | 0, addr + baseaddr, | |
4634 | cu->language, objfile); | |
c906108c SS |
4635 | } |
4636 | else | |
4637 | { | |
0963b4bd | 4638 | /* Static Variable. Skip symbols without location descriptors. */ |
c906108c | 4639 | if (pdi->locdesc == NULL) |
decbce07 MS |
4640 | { |
4641 | if (built_actual_name) | |
4642 | xfree (actual_name); | |
4643 | return; | |
4644 | } | |
f47fb265 | 4645 | /* prim_record_minimal_symbol (actual_name, addr + baseaddr, |
c5aa993b | 4646 | mst_file_data, objfile); */ |
f47fb265 MS |
4647 | add_psymbol_to_list (actual_name, strlen (actual_name), |
4648 | built_actual_name, | |
4649 | VAR_DOMAIN, LOC_STATIC, | |
4650 | &objfile->static_psymbols, | |
4651 | 0, addr + baseaddr, | |
4652 | cu->language, objfile); | |
c906108c SS |
4653 | } |
4654 | break; | |
4655 | case DW_TAG_typedef: | |
4656 | case DW_TAG_base_type: | |
a02abb62 | 4657 | case DW_TAG_subrange_type: |
38d518c9 | 4658 | add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 4659 | built_actual_name, |
176620f1 | 4660 | VAR_DOMAIN, LOC_TYPEDEF, |
c906108c | 4661 | &objfile->static_psymbols, |
e142c38c | 4662 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 4663 | break; |
72bf9492 DJ |
4664 | case DW_TAG_namespace: |
4665 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
04a679b8 | 4666 | built_actual_name, |
72bf9492 DJ |
4667 | VAR_DOMAIN, LOC_TYPEDEF, |
4668 | &objfile->global_psymbols, | |
4669 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
4670 | break; | |
c906108c | 4671 | case DW_TAG_class_type: |
680b30c7 | 4672 | case DW_TAG_interface_type: |
c906108c SS |
4673 | case DW_TAG_structure_type: |
4674 | case DW_TAG_union_type: | |
4675 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
4676 | /* Skip external references. The DWARF standard says in the section |
4677 | about "Structure, Union, and Class Type Entries": "An incomplete | |
4678 | structure, union or class type is represented by a structure, | |
4679 | union or class entry that does not have a byte size attribute | |
4680 | and that has a DW_AT_declaration attribute." */ | |
4681 | if (!pdi->has_byte_size && pdi->is_declaration) | |
decbce07 MS |
4682 | { |
4683 | if (built_actual_name) | |
4684 | xfree (actual_name); | |
4685 | return; | |
4686 | } | |
fa4028e9 | 4687 | |
63d06c5c DC |
4688 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
4689 | static vs. global. */ | |
38d518c9 | 4690 | add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 4691 | built_actual_name, |
176620f1 | 4692 | STRUCT_DOMAIN, LOC_TYPEDEF, |
987504bb JJ |
4693 | (cu->language == language_cplus |
4694 | || cu->language == language_java) | |
63d06c5c DC |
4695 | ? &objfile->global_psymbols |
4696 | : &objfile->static_psymbols, | |
e142c38c | 4697 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 4698 | |
c906108c SS |
4699 | break; |
4700 | case DW_TAG_enumerator: | |
38d518c9 | 4701 | add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 4702 | built_actual_name, |
176620f1 | 4703 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
4704 | (cu->language == language_cplus |
4705 | || cu->language == language_java) | |
f6fe98ef DJ |
4706 | ? &objfile->global_psymbols |
4707 | : &objfile->static_psymbols, | |
e142c38c | 4708 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
4709 | break; |
4710 | default: | |
4711 | break; | |
4712 | } | |
5c4e30ca | 4713 | |
72bf9492 DJ |
4714 | if (built_actual_name) |
4715 | xfree (actual_name); | |
c906108c SS |
4716 | } |
4717 | ||
5c4e30ca DC |
4718 | /* Read a partial die corresponding to a namespace; also, add a symbol |
4719 | corresponding to that namespace to the symbol table. NAMESPACE is | |
4720 | the name of the enclosing namespace. */ | |
91c24f0a | 4721 | |
72bf9492 DJ |
4722 | static void |
4723 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 4724 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
5734ee8b | 4725 | int need_pc, struct dwarf2_cu *cu) |
91c24f0a | 4726 | { |
72bf9492 | 4727 | /* Add a symbol for the namespace. */ |
e7c27a73 | 4728 | |
72bf9492 | 4729 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
4730 | |
4731 | /* Now scan partial symbols in that namespace. */ | |
4732 | ||
91c24f0a | 4733 | if (pdi->has_children) |
5734ee8b | 4734 | scan_partial_symbols (pdi->die_child, lowpc, highpc, need_pc, cu); |
91c24f0a DC |
4735 | } |
4736 | ||
5d7cb8df JK |
4737 | /* Read a partial die corresponding to a Fortran module. */ |
4738 | ||
4739 | static void | |
4740 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
4741 | CORE_ADDR *highpc, int need_pc, struct dwarf2_cu *cu) | |
4742 | { | |
f55ee35c | 4743 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
4744 | |
4745 | if (pdi->has_children) | |
4746 | scan_partial_symbols (pdi->die_child, lowpc, highpc, need_pc, cu); | |
4747 | } | |
4748 | ||
bc30ff58 JB |
4749 | /* Read a partial die corresponding to a subprogram and create a partial |
4750 | symbol for that subprogram. When the CU language allows it, this | |
4751 | routine also defines a partial symbol for each nested subprogram | |
4752 | that this subprogram contains. | |
6e70227d | 4753 | |
bc30ff58 JB |
4754 | DIE my also be a lexical block, in which case we simply search |
4755 | recursively for suprograms defined inside that lexical block. | |
4756 | Again, this is only performed when the CU language allows this | |
4757 | type of definitions. */ | |
4758 | ||
4759 | static void | |
4760 | add_partial_subprogram (struct partial_die_info *pdi, | |
4761 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 4762 | int need_pc, struct dwarf2_cu *cu) |
bc30ff58 JB |
4763 | { |
4764 | if (pdi->tag == DW_TAG_subprogram) | |
4765 | { | |
4766 | if (pdi->has_pc_info) | |
4767 | { | |
4768 | if (pdi->lowpc < *lowpc) | |
4769 | *lowpc = pdi->lowpc; | |
4770 | if (pdi->highpc > *highpc) | |
4771 | *highpc = pdi->highpc; | |
5734ee8b DJ |
4772 | if (need_pc) |
4773 | { | |
4774 | CORE_ADDR baseaddr; | |
4775 | struct objfile *objfile = cu->objfile; | |
4776 | ||
4777 | baseaddr = ANOFFSET (objfile->section_offsets, | |
4778 | SECT_OFF_TEXT (objfile)); | |
4779 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
01637564 DE |
4780 | pdi->lowpc + baseaddr, |
4781 | pdi->highpc - 1 + baseaddr, | |
9291a0cd | 4782 | cu->per_cu->v.psymtab); |
5734ee8b | 4783 | } |
481860b3 GB |
4784 | } |
4785 | ||
4786 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
4787 | { | |
bc30ff58 | 4788 | if (!pdi->is_declaration) |
e8d05480 JB |
4789 | /* Ignore subprogram DIEs that do not have a name, they are |
4790 | illegal. Do not emit a complaint at this point, we will | |
4791 | do so when we convert this psymtab into a symtab. */ | |
4792 | if (pdi->name) | |
4793 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
4794 | } |
4795 | } | |
6e70227d | 4796 | |
bc30ff58 JB |
4797 | if (! pdi->has_children) |
4798 | return; | |
4799 | ||
4800 | if (cu->language == language_ada) | |
4801 | { | |
4802 | pdi = pdi->die_child; | |
4803 | while (pdi != NULL) | |
4804 | { | |
4805 | fixup_partial_die (pdi, cu); | |
4806 | if (pdi->tag == DW_TAG_subprogram | |
4807 | || pdi->tag == DW_TAG_lexical_block) | |
5734ee8b | 4808 | add_partial_subprogram (pdi, lowpc, highpc, need_pc, cu); |
bc30ff58 JB |
4809 | pdi = pdi->die_sibling; |
4810 | } | |
4811 | } | |
4812 | } | |
4813 | ||
91c24f0a DC |
4814 | /* Read a partial die corresponding to an enumeration type. */ |
4815 | ||
72bf9492 DJ |
4816 | static void |
4817 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
4818 | struct dwarf2_cu *cu) | |
91c24f0a | 4819 | { |
72bf9492 | 4820 | struct partial_die_info *pdi; |
91c24f0a DC |
4821 | |
4822 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
4823 | add_partial_symbol (enum_pdi, cu); |
4824 | ||
4825 | pdi = enum_pdi->die_child; | |
4826 | while (pdi) | |
91c24f0a | 4827 | { |
72bf9492 | 4828 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
e2e0b3e5 | 4829 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
91c24f0a | 4830 | else |
72bf9492 DJ |
4831 | add_partial_symbol (pdi, cu); |
4832 | pdi = pdi->die_sibling; | |
91c24f0a | 4833 | } |
91c24f0a DC |
4834 | } |
4835 | ||
6caca83c CC |
4836 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
4837 | ||
4838 | static unsigned int | |
4839 | peek_abbrev_code (bfd *abfd, gdb_byte *info_ptr) | |
4840 | { | |
4841 | unsigned int bytes_read; | |
4842 | ||
4843 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
4844 | } | |
4845 | ||
4bb7a0a7 DJ |
4846 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit CU. |
4847 | Return the corresponding abbrev, or NULL if the number is zero (indicating | |
4848 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
4849 | the initial number. */ | |
4850 | ||
4851 | static struct abbrev_info * | |
fe1b8b76 | 4852 | peek_die_abbrev (gdb_byte *info_ptr, unsigned int *bytes_read, |
891d2f0b | 4853 | struct dwarf2_cu *cu) |
4bb7a0a7 DJ |
4854 | { |
4855 | bfd *abfd = cu->objfile->obfd; | |
4856 | unsigned int abbrev_number; | |
4857 | struct abbrev_info *abbrev; | |
4858 | ||
4859 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
4860 | ||
4861 | if (abbrev_number == 0) | |
4862 | return NULL; | |
4863 | ||
4864 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); | |
4865 | if (!abbrev) | |
4866 | { | |
3e43a32a MS |
4867 | error (_("Dwarf Error: Could not find abbrev number %d [in module %s]"), |
4868 | abbrev_number, bfd_get_filename (abfd)); | |
4bb7a0a7 DJ |
4869 | } |
4870 | ||
4871 | return abbrev; | |
4872 | } | |
4873 | ||
93311388 DE |
4874 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
4875 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
4876 | DIE. Any children of the skipped DIEs will also be skipped. */ |
4877 | ||
fe1b8b76 | 4878 | static gdb_byte * |
dee91e82 | 4879 | skip_children (const struct die_reader_specs *reader, gdb_byte *info_ptr) |
4bb7a0a7 | 4880 | { |
dee91e82 | 4881 | struct dwarf2_cu *cu = reader->cu; |
4bb7a0a7 DJ |
4882 | struct abbrev_info *abbrev; |
4883 | unsigned int bytes_read; | |
4884 | ||
4885 | while (1) | |
4886 | { | |
4887 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
4888 | if (abbrev == NULL) | |
4889 | return info_ptr + bytes_read; | |
4890 | else | |
dee91e82 | 4891 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
4892 | } |
4893 | } | |
4894 | ||
93311388 DE |
4895 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
4896 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
4897 | abbrev corresponding to that skipped uleb128 should be passed in |
4898 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
4899 | children. */ | |
4900 | ||
fe1b8b76 | 4901 | static gdb_byte * |
dee91e82 DE |
4902 | skip_one_die (const struct die_reader_specs *reader, gdb_byte *info_ptr, |
4903 | struct abbrev_info *abbrev) | |
4bb7a0a7 DJ |
4904 | { |
4905 | unsigned int bytes_read; | |
4906 | struct attribute attr; | |
dee91e82 DE |
4907 | bfd *abfd = reader->abfd; |
4908 | struct dwarf2_cu *cu = reader->cu; | |
4909 | gdb_byte *buffer = reader->buffer; | |
4bb7a0a7 DJ |
4910 | unsigned int form, i; |
4911 | ||
4912 | for (i = 0; i < abbrev->num_attrs; i++) | |
4913 | { | |
4914 | /* The only abbrev we care about is DW_AT_sibling. */ | |
4915 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
4916 | { | |
dee91e82 | 4917 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
4bb7a0a7 | 4918 | if (attr.form == DW_FORM_ref_addr) |
3e43a32a MS |
4919 | complaint (&symfile_complaints, |
4920 | _("ignoring absolute DW_AT_sibling")); | |
4bb7a0a7 | 4921 | else |
b64f50a1 | 4922 | return buffer + dwarf2_get_ref_die_offset (&attr).sect_off; |
4bb7a0a7 DJ |
4923 | } |
4924 | ||
4925 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
4926 | form = abbrev->attrs[i].form; | |
4927 | skip_attribute: | |
4928 | switch (form) | |
4929 | { | |
4bb7a0a7 | 4930 | case DW_FORM_ref_addr: |
ae411497 TT |
4931 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
4932 | and later it is offset sized. */ | |
4933 | if (cu->header.version == 2) | |
4934 | info_ptr += cu->header.addr_size; | |
4935 | else | |
4936 | info_ptr += cu->header.offset_size; | |
4937 | break; | |
4938 | case DW_FORM_addr: | |
4bb7a0a7 DJ |
4939 | info_ptr += cu->header.addr_size; |
4940 | break; | |
4941 | case DW_FORM_data1: | |
4942 | case DW_FORM_ref1: | |
4943 | case DW_FORM_flag: | |
4944 | info_ptr += 1; | |
4945 | break; | |
2dc7f7b3 TT |
4946 | case DW_FORM_flag_present: |
4947 | break; | |
4bb7a0a7 DJ |
4948 | case DW_FORM_data2: |
4949 | case DW_FORM_ref2: | |
4950 | info_ptr += 2; | |
4951 | break; | |
4952 | case DW_FORM_data4: | |
4953 | case DW_FORM_ref4: | |
4954 | info_ptr += 4; | |
4955 | break; | |
4956 | case DW_FORM_data8: | |
4957 | case DW_FORM_ref8: | |
55f1336d | 4958 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
4959 | info_ptr += 8; |
4960 | break; | |
4961 | case DW_FORM_string: | |
9b1c24c8 | 4962 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
4963 | info_ptr += bytes_read; |
4964 | break; | |
2dc7f7b3 | 4965 | case DW_FORM_sec_offset: |
4bb7a0a7 DJ |
4966 | case DW_FORM_strp: |
4967 | info_ptr += cu->header.offset_size; | |
4968 | break; | |
2dc7f7b3 | 4969 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
4970 | case DW_FORM_block: |
4971 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
4972 | info_ptr += bytes_read; | |
4973 | break; | |
4974 | case DW_FORM_block1: | |
4975 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
4976 | break; | |
4977 | case DW_FORM_block2: | |
4978 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
4979 | break; | |
4980 | case DW_FORM_block4: | |
4981 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
4982 | break; | |
4983 | case DW_FORM_sdata: | |
4984 | case DW_FORM_udata: | |
4985 | case DW_FORM_ref_udata: | |
3019eac3 DE |
4986 | case DW_FORM_GNU_addr_index: |
4987 | case DW_FORM_GNU_str_index: | |
4bb7a0a7 DJ |
4988 | info_ptr = skip_leb128 (abfd, info_ptr); |
4989 | break; | |
4990 | case DW_FORM_indirect: | |
4991 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
4992 | info_ptr += bytes_read; | |
4993 | /* We need to continue parsing from here, so just go back to | |
4994 | the top. */ | |
4995 | goto skip_attribute; | |
4996 | ||
4997 | default: | |
3e43a32a MS |
4998 | error (_("Dwarf Error: Cannot handle %s " |
4999 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
5000 | dwarf_form_name (form), |
5001 | bfd_get_filename (abfd)); | |
5002 | } | |
5003 | } | |
5004 | ||
5005 | if (abbrev->has_children) | |
dee91e82 | 5006 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
5007 | else |
5008 | return info_ptr; | |
5009 | } | |
5010 | ||
93311388 | 5011 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 5012 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 5013 | |
fe1b8b76 | 5014 | static gdb_byte * |
dee91e82 DE |
5015 | locate_pdi_sibling (const struct die_reader_specs *reader, |
5016 | struct partial_die_info *orig_pdi, | |
5017 | gdb_byte *info_ptr) | |
91c24f0a DC |
5018 | { |
5019 | /* Do we know the sibling already? */ | |
72bf9492 | 5020 | |
91c24f0a DC |
5021 | if (orig_pdi->sibling) |
5022 | return orig_pdi->sibling; | |
5023 | ||
5024 | /* Are there any children to deal with? */ | |
5025 | ||
5026 | if (!orig_pdi->has_children) | |
5027 | return info_ptr; | |
5028 | ||
4bb7a0a7 | 5029 | /* Skip the children the long way. */ |
91c24f0a | 5030 | |
dee91e82 | 5031 | return skip_children (reader, info_ptr); |
91c24f0a DC |
5032 | } |
5033 | ||
c906108c SS |
5034 | /* Expand this partial symbol table into a full symbol table. */ |
5035 | ||
5036 | static void | |
fba45db2 | 5037 | dwarf2_psymtab_to_symtab (struct partial_symtab *pst) |
c906108c | 5038 | { |
c906108c SS |
5039 | if (pst != NULL) |
5040 | { | |
5041 | if (pst->readin) | |
5042 | { | |
3e43a32a MS |
5043 | warning (_("bug: psymtab for %s is already read in."), |
5044 | pst->filename); | |
c906108c SS |
5045 | } |
5046 | else | |
5047 | { | |
5048 | if (info_verbose) | |
5049 | { | |
3e43a32a MS |
5050 | printf_filtered (_("Reading in symbols for %s..."), |
5051 | pst->filename); | |
c906108c SS |
5052 | gdb_flush (gdb_stdout); |
5053 | } | |
5054 | ||
10b3939b DJ |
5055 | /* Restore our global data. */ |
5056 | dwarf2_per_objfile = objfile_data (pst->objfile, | |
5057 | dwarf2_objfile_data_key); | |
5058 | ||
b2ab525c KB |
5059 | /* If this psymtab is constructed from a debug-only objfile, the |
5060 | has_section_at_zero flag will not necessarily be correct. We | |
5061 | can get the correct value for this flag by looking at the data | |
5062 | associated with the (presumably stripped) associated objfile. */ | |
5063 | if (pst->objfile->separate_debug_objfile_backlink) | |
5064 | { | |
5065 | struct dwarf2_per_objfile *dpo_backlink | |
5066 | = objfile_data (pst->objfile->separate_debug_objfile_backlink, | |
5067 | dwarf2_objfile_data_key); | |
9a619af0 | 5068 | |
b2ab525c KB |
5069 | dwarf2_per_objfile->has_section_at_zero |
5070 | = dpo_backlink->has_section_at_zero; | |
5071 | } | |
5072 | ||
98bfdba5 PA |
5073 | dwarf2_per_objfile->reading_partial_symbols = 0; |
5074 | ||
c906108c SS |
5075 | psymtab_to_symtab_1 (pst); |
5076 | ||
5077 | /* Finish up the debug error message. */ | |
5078 | if (info_verbose) | |
a3f17187 | 5079 | printf_filtered (_("done.\n")); |
c906108c SS |
5080 | } |
5081 | } | |
5082 | } | |
9cdd5dbd DE |
5083 | \f |
5084 | /* Reading in full CUs. */ | |
c906108c | 5085 | |
10b3939b DJ |
5086 | /* Add PER_CU to the queue. */ |
5087 | ||
5088 | static void | |
a0f42c21 | 5089 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu) |
10b3939b DJ |
5090 | { |
5091 | struct dwarf2_queue_item *item; | |
5092 | ||
5093 | per_cu->queued = 1; | |
5094 | item = xmalloc (sizeof (*item)); | |
5095 | item->per_cu = per_cu; | |
5096 | item->next = NULL; | |
5097 | ||
5098 | if (dwarf2_queue == NULL) | |
5099 | dwarf2_queue = item; | |
5100 | else | |
5101 | dwarf2_queue_tail->next = item; | |
5102 | ||
5103 | dwarf2_queue_tail = item; | |
5104 | } | |
5105 | ||
5106 | /* Process the queue. */ | |
5107 | ||
5108 | static void | |
a0f42c21 | 5109 | process_queue (void) |
10b3939b DJ |
5110 | { |
5111 | struct dwarf2_queue_item *item, *next_item; | |
5112 | ||
03dd20cc DJ |
5113 | /* The queue starts out with one item, but following a DIE reference |
5114 | may load a new CU, adding it to the end of the queue. */ | |
10b3939b DJ |
5115 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) |
5116 | { | |
9291a0cd TT |
5117 | if (dwarf2_per_objfile->using_index |
5118 | ? !item->per_cu->v.quick->symtab | |
5119 | : (item->per_cu->v.psymtab && !item->per_cu->v.psymtab->readin)) | |
10b3939b DJ |
5120 | process_full_comp_unit (item->per_cu); |
5121 | ||
5122 | item->per_cu->queued = 0; | |
5123 | next_item = item->next; | |
5124 | xfree (item); | |
5125 | } | |
5126 | ||
5127 | dwarf2_queue_tail = NULL; | |
5128 | } | |
5129 | ||
5130 | /* Free all allocated queue entries. This function only releases anything if | |
5131 | an error was thrown; if the queue was processed then it would have been | |
5132 | freed as we went along. */ | |
5133 | ||
5134 | static void | |
5135 | dwarf2_release_queue (void *dummy) | |
5136 | { | |
5137 | struct dwarf2_queue_item *item, *last; | |
5138 | ||
5139 | item = dwarf2_queue; | |
5140 | while (item) | |
5141 | { | |
5142 | /* Anything still marked queued is likely to be in an | |
5143 | inconsistent state, so discard it. */ | |
5144 | if (item->per_cu->queued) | |
5145 | { | |
5146 | if (item->per_cu->cu != NULL) | |
dee91e82 | 5147 | free_one_cached_comp_unit (item->per_cu); |
10b3939b DJ |
5148 | item->per_cu->queued = 0; |
5149 | } | |
5150 | ||
5151 | last = item; | |
5152 | item = item->next; | |
5153 | xfree (last); | |
5154 | } | |
5155 | ||
5156 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
5157 | } | |
5158 | ||
5159 | /* Read in full symbols for PST, and anything it depends on. */ | |
5160 | ||
c906108c | 5161 | static void |
fba45db2 | 5162 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c | 5163 | { |
10b3939b | 5164 | struct dwarf2_per_cu_data *per_cu; |
c906108c | 5165 | struct cleanup *back_to; |
aaa75496 JB |
5166 | int i; |
5167 | ||
5168 | for (i = 0; i < pst->number_of_dependencies; i++) | |
5169 | if (!pst->dependencies[i]->readin) | |
5170 | { | |
5171 | /* Inform about additional files that need to be read in. */ | |
5172 | if (info_verbose) | |
5173 | { | |
a3f17187 | 5174 | /* FIXME: i18n: Need to make this a single string. */ |
aaa75496 JB |
5175 | fputs_filtered (" ", gdb_stdout); |
5176 | wrap_here (""); | |
5177 | fputs_filtered ("and ", gdb_stdout); | |
5178 | wrap_here (""); | |
5179 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
0963b4bd | 5180 | wrap_here (""); /* Flush output. */ |
aaa75496 JB |
5181 | gdb_flush (gdb_stdout); |
5182 | } | |
5183 | psymtab_to_symtab_1 (pst->dependencies[i]); | |
5184 | } | |
5185 | ||
e38df1d0 | 5186 | per_cu = pst->read_symtab_private; |
10b3939b DJ |
5187 | |
5188 | if (per_cu == NULL) | |
aaa75496 JB |
5189 | { |
5190 | /* It's an include file, no symbols to read for it. | |
5191 | Everything is in the parent symtab. */ | |
5192 | pst->readin = 1; | |
5193 | return; | |
5194 | } | |
c906108c | 5195 | |
a0f42c21 | 5196 | dw2_do_instantiate_symtab (per_cu); |
10b3939b DJ |
5197 | } |
5198 | ||
dee91e82 DE |
5199 | /* Trivial hash function for die_info: the hash value of a DIE |
5200 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 5201 | |
dee91e82 DE |
5202 | static hashval_t |
5203 | die_hash (const void *item) | |
10b3939b | 5204 | { |
dee91e82 | 5205 | const struct die_info *die = item; |
6502dd73 | 5206 | |
dee91e82 DE |
5207 | return die->offset.sect_off; |
5208 | } | |
63d06c5c | 5209 | |
dee91e82 DE |
5210 | /* Trivial comparison function for die_info structures: two DIEs |
5211 | are equal if they have the same offset. */ | |
98bfdba5 | 5212 | |
dee91e82 DE |
5213 | static int |
5214 | die_eq (const void *item_lhs, const void *item_rhs) | |
5215 | { | |
5216 | const struct die_info *die_lhs = item_lhs; | |
5217 | const struct die_info *die_rhs = item_rhs; | |
c906108c | 5218 | |
dee91e82 DE |
5219 | return die_lhs->offset.sect_off == die_rhs->offset.sect_off; |
5220 | } | |
c906108c | 5221 | |
dee91e82 DE |
5222 | /* die_reader_func for load_full_comp_unit. |
5223 | This is identical to read_signatured_type_reader, | |
5224 | but is kept separate for now. */ | |
c906108c | 5225 | |
dee91e82 DE |
5226 | static void |
5227 | load_full_comp_unit_reader (const struct die_reader_specs *reader, | |
5228 | gdb_byte *info_ptr, | |
5229 | struct die_info *comp_unit_die, | |
5230 | int has_children, | |
5231 | void *data) | |
5232 | { | |
5233 | struct dwarf2_cu *cu = reader->cu; | |
5234 | struct attribute *attr; | |
6caca83c | 5235 | |
dee91e82 DE |
5236 | gdb_assert (cu->die_hash == NULL); |
5237 | cu->die_hash = | |
5238 | htab_create_alloc_ex (cu->header.length / 12, | |
5239 | die_hash, | |
5240 | die_eq, | |
5241 | NULL, | |
5242 | &cu->comp_unit_obstack, | |
5243 | hashtab_obstack_allocate, | |
5244 | dummy_obstack_deallocate); | |
e142c38c | 5245 | |
dee91e82 DE |
5246 | if (has_children) |
5247 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
5248 | &info_ptr, comp_unit_die); | |
5249 | cu->dies = comp_unit_die; | |
5250 | /* comp_unit_die is not stored in die_hash, no need. */ | |
10b3939b DJ |
5251 | |
5252 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 5253 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 5254 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
5255 | or we won't be able to build types correctly. |
5256 | Similarly, if we do not read the producer, we can not apply | |
5257 | producer-specific interpretation. */ | |
9816fde3 | 5258 | prepare_one_comp_unit (cu, cu->dies); |
dee91e82 | 5259 | } |
10b3939b | 5260 | |
dee91e82 | 5261 | /* Load the DIEs associated with PER_CU into memory. */ |
a6c727b2 | 5262 | |
dee91e82 DE |
5263 | static void |
5264 | load_full_comp_unit (struct dwarf2_per_cu_data *this_cu) | |
5265 | { | |
3019eac3 | 5266 | gdb_assert (! this_cu->is_debug_types); |
c5b7e1cb | 5267 | |
fd820528 | 5268 | init_cutu_and_read_dies (this_cu, 1, 1, load_full_comp_unit_reader, NULL); |
10b3939b DJ |
5269 | } |
5270 | ||
3da10d80 KS |
5271 | /* Add a DIE to the delayed physname list. */ |
5272 | ||
5273 | static void | |
5274 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
5275 | const char *name, struct die_info *die, | |
5276 | struct dwarf2_cu *cu) | |
5277 | { | |
5278 | struct delayed_method_info mi; | |
5279 | mi.type = type; | |
5280 | mi.fnfield_index = fnfield_index; | |
5281 | mi.index = index; | |
5282 | mi.name = name; | |
5283 | mi.die = die; | |
5284 | VEC_safe_push (delayed_method_info, cu->method_list, &mi); | |
5285 | } | |
5286 | ||
5287 | /* A cleanup for freeing the delayed method list. */ | |
5288 | ||
5289 | static void | |
5290 | free_delayed_list (void *ptr) | |
5291 | { | |
5292 | struct dwarf2_cu *cu = (struct dwarf2_cu *) ptr; | |
5293 | if (cu->method_list != NULL) | |
5294 | { | |
5295 | VEC_free (delayed_method_info, cu->method_list); | |
5296 | cu->method_list = NULL; | |
5297 | } | |
5298 | } | |
5299 | ||
5300 | /* Compute the physnames of any methods on the CU's method list. | |
5301 | ||
5302 | The computation of method physnames is delayed in order to avoid the | |
5303 | (bad) condition that one of the method's formal parameters is of an as yet | |
5304 | incomplete type. */ | |
5305 | ||
5306 | static void | |
5307 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
5308 | { | |
5309 | int i; | |
5310 | struct delayed_method_info *mi; | |
5311 | for (i = 0; VEC_iterate (delayed_method_info, cu->method_list, i, mi) ; ++i) | |
5312 | { | |
1d06ead6 | 5313 | const char *physname; |
3da10d80 KS |
5314 | struct fn_fieldlist *fn_flp |
5315 | = &TYPE_FN_FIELDLIST (mi->type, mi->fnfield_index); | |
1d06ead6 | 5316 | physname = dwarf2_physname ((char *) mi->name, mi->die, cu); |
3da10d80 KS |
5317 | fn_flp->fn_fields[mi->index].physname = physname ? physname : ""; |
5318 | } | |
5319 | } | |
5320 | ||
a766d390 DE |
5321 | /* Go objects should be embedded in a DW_TAG_module DIE, |
5322 | and it's not clear if/how imported objects will appear. | |
5323 | To keep Go support simple until that's worked out, | |
5324 | go back through what we've read and create something usable. | |
5325 | We could do this while processing each DIE, and feels kinda cleaner, | |
5326 | but that way is more invasive. | |
5327 | This is to, for example, allow the user to type "p var" or "b main" | |
5328 | without having to specify the package name, and allow lookups | |
5329 | of module.object to work in contexts that use the expression | |
5330 | parser. */ | |
5331 | ||
5332 | static void | |
5333 | fixup_go_packaging (struct dwarf2_cu *cu) | |
5334 | { | |
5335 | char *package_name = NULL; | |
5336 | struct pending *list; | |
5337 | int i; | |
5338 | ||
5339 | for (list = global_symbols; list != NULL; list = list->next) | |
5340 | { | |
5341 | for (i = 0; i < list->nsyms; ++i) | |
5342 | { | |
5343 | struct symbol *sym = list->symbol[i]; | |
5344 | ||
5345 | if (SYMBOL_LANGUAGE (sym) == language_go | |
5346 | && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
5347 | { | |
5348 | char *this_package_name = go_symbol_package_name (sym); | |
5349 | ||
5350 | if (this_package_name == NULL) | |
5351 | continue; | |
5352 | if (package_name == NULL) | |
5353 | package_name = this_package_name; | |
5354 | else | |
5355 | { | |
5356 | if (strcmp (package_name, this_package_name) != 0) | |
5357 | complaint (&symfile_complaints, | |
5358 | _("Symtab %s has objects from two different Go packages: %s and %s"), | |
5359 | (sym->symtab && sym->symtab->filename | |
5360 | ? sym->symtab->filename | |
5361 | : cu->objfile->name), | |
5362 | this_package_name, package_name); | |
5363 | xfree (this_package_name); | |
5364 | } | |
5365 | } | |
5366 | } | |
5367 | } | |
5368 | ||
5369 | if (package_name != NULL) | |
5370 | { | |
5371 | struct objfile *objfile = cu->objfile; | |
5372 | struct type *type = init_type (TYPE_CODE_MODULE, 0, 0, | |
5373 | package_name, objfile); | |
5374 | struct symbol *sym; | |
5375 | ||
5376 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
5377 | ||
5378 | sym = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symbol); | |
5379 | SYMBOL_SET_LANGUAGE (sym, language_go); | |
5380 | SYMBOL_SET_NAMES (sym, package_name, strlen (package_name), 1, objfile); | |
5381 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, | |
5382 | e.g., "main" finds the "main" module and not C's main(). */ | |
5383 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
5384 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
5385 | SYMBOL_TYPE (sym) = type; | |
5386 | ||
5387 | add_symbol_to_list (sym, &global_symbols); | |
5388 | ||
5389 | xfree (package_name); | |
5390 | } | |
5391 | } | |
5392 | ||
9cdd5dbd | 5393 | /* Generate full symbol information for PER_CU, whose DIEs have |
10b3939b DJ |
5394 | already been loaded into memory. */ |
5395 | ||
5396 | static void | |
5397 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu) | |
5398 | { | |
10b3939b | 5399 | struct dwarf2_cu *cu = per_cu->cu; |
9291a0cd | 5400 | struct objfile *objfile = per_cu->objfile; |
10b3939b DJ |
5401 | CORE_ADDR lowpc, highpc; |
5402 | struct symtab *symtab; | |
3da10d80 | 5403 | struct cleanup *back_to, *delayed_list_cleanup; |
10b3939b DJ |
5404 | CORE_ADDR baseaddr; |
5405 | ||
5406 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
5407 | ||
10b3939b DJ |
5408 | buildsym_init (); |
5409 | back_to = make_cleanup (really_free_pendings, NULL); | |
3da10d80 | 5410 | delayed_list_cleanup = make_cleanup (free_delayed_list, cu); |
10b3939b DJ |
5411 | |
5412 | cu->list_in_scope = &file_symbols; | |
c906108c SS |
5413 | |
5414 | /* Do line number decoding in read_file_scope () */ | |
10b3939b | 5415 | process_die (cu->dies, cu); |
c906108c | 5416 | |
a766d390 DE |
5417 | /* For now fudge the Go package. */ |
5418 | if (cu->language == language_go) | |
5419 | fixup_go_packaging (cu); | |
5420 | ||
3da10d80 KS |
5421 | /* Now that we have processed all the DIEs in the CU, all the types |
5422 | should be complete, and it should now be safe to compute all of the | |
5423 | physnames. */ | |
5424 | compute_delayed_physnames (cu); | |
5425 | do_cleanups (delayed_list_cleanup); | |
5426 | ||
fae299cd DC |
5427 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
5428 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
5429 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 5430 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 5431 | |
613e1657 | 5432 | symtab = end_symtab (highpc + baseaddr, objfile, SECT_OFF_TEXT (objfile)); |
c906108c | 5433 | |
8be455d7 | 5434 | if (symtab != NULL) |
c906108c | 5435 | { |
df15bd07 | 5436 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 5437 | |
8be455d7 JK |
5438 | /* Set symtab language to language from DW_AT_language. If the |
5439 | compilation is from a C file generated by language preprocessors, do | |
5440 | not set the language if it was already deduced by start_subfile. */ | |
5441 | if (!(cu->language == language_c && symtab->language != language_c)) | |
5442 | symtab->language = cu->language; | |
5443 | ||
5444 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
5445 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
5446 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
5447 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
5448 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
5449 | |
5450 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
5451 | needed, it would be wrong due to missing DW_AT_producer there. | |
5452 | ||
5453 | Still one can confuse GDB by using non-standard GCC compilation | |
5454 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
5455 | */ | |
ab260dad | 5456 | if (cu->has_loclist && gcc_4_minor >= 5) |
8be455d7 | 5457 | symtab->locations_valid = 1; |
e0d00bc7 JK |
5458 | |
5459 | if (gcc_4_minor >= 5) | |
5460 | symtab->epilogue_unwind_valid = 1; | |
96408a79 SA |
5461 | |
5462 | symtab->call_site_htab = cu->call_site_htab; | |
c906108c | 5463 | } |
9291a0cd TT |
5464 | |
5465 | if (dwarf2_per_objfile->using_index) | |
5466 | per_cu->v.quick->symtab = symtab; | |
5467 | else | |
5468 | { | |
5469 | struct partial_symtab *pst = per_cu->v.psymtab; | |
5470 | pst->symtab = symtab; | |
5471 | pst->readin = 1; | |
5472 | } | |
c906108c SS |
5473 | |
5474 | do_cleanups (back_to); | |
5475 | } | |
5476 | ||
5477 | /* Process a die and its children. */ | |
5478 | ||
5479 | static void | |
e7c27a73 | 5480 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
5481 | { |
5482 | switch (die->tag) | |
5483 | { | |
5484 | case DW_TAG_padding: | |
5485 | break; | |
5486 | case DW_TAG_compile_unit: | |
e7c27a73 | 5487 | read_file_scope (die, cu); |
c906108c | 5488 | break; |
348e048f DE |
5489 | case DW_TAG_type_unit: |
5490 | read_type_unit_scope (die, cu); | |
5491 | break; | |
c906108c | 5492 | case DW_TAG_subprogram: |
c906108c | 5493 | case DW_TAG_inlined_subroutine: |
edb3359d | 5494 | read_func_scope (die, cu); |
c906108c SS |
5495 | break; |
5496 | case DW_TAG_lexical_block: | |
14898363 L |
5497 | case DW_TAG_try_block: |
5498 | case DW_TAG_catch_block: | |
e7c27a73 | 5499 | read_lexical_block_scope (die, cu); |
c906108c | 5500 | break; |
96408a79 SA |
5501 | case DW_TAG_GNU_call_site: |
5502 | read_call_site_scope (die, cu); | |
5503 | break; | |
c906108c | 5504 | case DW_TAG_class_type: |
680b30c7 | 5505 | case DW_TAG_interface_type: |
c906108c SS |
5506 | case DW_TAG_structure_type: |
5507 | case DW_TAG_union_type: | |
134d01f1 | 5508 | process_structure_scope (die, cu); |
c906108c SS |
5509 | break; |
5510 | case DW_TAG_enumeration_type: | |
134d01f1 | 5511 | process_enumeration_scope (die, cu); |
c906108c | 5512 | break; |
134d01f1 | 5513 | |
f792889a DJ |
5514 | /* These dies have a type, but processing them does not create |
5515 | a symbol or recurse to process the children. Therefore we can | |
5516 | read them on-demand through read_type_die. */ | |
c906108c | 5517 | case DW_TAG_subroutine_type: |
72019c9c | 5518 | case DW_TAG_set_type: |
c906108c | 5519 | case DW_TAG_array_type: |
c906108c | 5520 | case DW_TAG_pointer_type: |
c906108c | 5521 | case DW_TAG_ptr_to_member_type: |
c906108c | 5522 | case DW_TAG_reference_type: |
c906108c | 5523 | case DW_TAG_string_type: |
c906108c | 5524 | break; |
134d01f1 | 5525 | |
c906108c | 5526 | case DW_TAG_base_type: |
a02abb62 | 5527 | case DW_TAG_subrange_type: |
cb249c71 | 5528 | case DW_TAG_typedef: |
134d01f1 DJ |
5529 | /* Add a typedef symbol for the type definition, if it has a |
5530 | DW_AT_name. */ | |
f792889a | 5531 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 5532 | break; |
c906108c | 5533 | case DW_TAG_common_block: |
e7c27a73 | 5534 | read_common_block (die, cu); |
c906108c SS |
5535 | break; |
5536 | case DW_TAG_common_inclusion: | |
5537 | break; | |
d9fa45fe | 5538 | case DW_TAG_namespace: |
63d06c5c | 5539 | processing_has_namespace_info = 1; |
e7c27a73 | 5540 | read_namespace (die, cu); |
d9fa45fe | 5541 | break; |
5d7cb8df | 5542 | case DW_TAG_module: |
f55ee35c | 5543 | processing_has_namespace_info = 1; |
5d7cb8df JK |
5544 | read_module (die, cu); |
5545 | break; | |
d9fa45fe DC |
5546 | case DW_TAG_imported_declaration: |
5547 | case DW_TAG_imported_module: | |
63d06c5c | 5548 | processing_has_namespace_info = 1; |
27aa8d6a SW |
5549 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
5550 | || cu->language != language_fortran)) | |
5551 | complaint (&symfile_complaints, _("Tag '%s' has unexpected children"), | |
5552 | dwarf_tag_name (die->tag)); | |
5553 | read_import_statement (die, cu); | |
d9fa45fe | 5554 | break; |
c906108c | 5555 | default: |
e7c27a73 | 5556 | new_symbol (die, NULL, cu); |
c906108c SS |
5557 | break; |
5558 | } | |
5559 | } | |
5560 | ||
94af9270 KS |
5561 | /* A helper function for dwarf2_compute_name which determines whether DIE |
5562 | needs to have the name of the scope prepended to the name listed in the | |
5563 | die. */ | |
5564 | ||
5565 | static int | |
5566 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
5567 | { | |
1c809c68 TT |
5568 | struct attribute *attr; |
5569 | ||
94af9270 KS |
5570 | switch (die->tag) |
5571 | { | |
5572 | case DW_TAG_namespace: | |
5573 | case DW_TAG_typedef: | |
5574 | case DW_TAG_class_type: | |
5575 | case DW_TAG_interface_type: | |
5576 | case DW_TAG_structure_type: | |
5577 | case DW_TAG_union_type: | |
5578 | case DW_TAG_enumeration_type: | |
5579 | case DW_TAG_enumerator: | |
5580 | case DW_TAG_subprogram: | |
5581 | case DW_TAG_member: | |
5582 | return 1; | |
5583 | ||
5584 | case DW_TAG_variable: | |
c2b0a229 | 5585 | case DW_TAG_constant: |
94af9270 KS |
5586 | /* We only need to prefix "globally" visible variables. These include |
5587 | any variable marked with DW_AT_external or any variable that | |
5588 | lives in a namespace. [Variables in anonymous namespaces | |
5589 | require prefixing, but they are not DW_AT_external.] */ | |
5590 | ||
5591 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
5592 | { | |
5593 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 5594 | |
94af9270 KS |
5595 | return die_needs_namespace (die_specification (die, &spec_cu), |
5596 | spec_cu); | |
5597 | } | |
5598 | ||
1c809c68 | 5599 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
5600 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
5601 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
5602 | return 0; |
5603 | /* A variable in a lexical block of some kind does not need a | |
5604 | namespace, even though in C++ such variables may be external | |
5605 | and have a mangled name. */ | |
5606 | if (die->parent->tag == DW_TAG_lexical_block | |
5607 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
5608 | || die->parent->tag == DW_TAG_catch_block |
5609 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
5610 | return 0; |
5611 | return 1; | |
94af9270 KS |
5612 | |
5613 | default: | |
5614 | return 0; | |
5615 | } | |
5616 | } | |
5617 | ||
98bfdba5 PA |
5618 | /* Retrieve the last character from a mem_file. */ |
5619 | ||
5620 | static void | |
5621 | do_ui_file_peek_last (void *object, const char *buffer, long length) | |
5622 | { | |
5623 | char *last_char_p = (char *) object; | |
5624 | ||
5625 | if (length > 0) | |
5626 | *last_char_p = buffer[length - 1]; | |
5627 | } | |
5628 | ||
94af9270 | 5629 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 DE |
5630 | compute the physname for the object, which include a method's: |
5631 | - formal parameters (C++/Java), | |
5632 | - receiver type (Go), | |
5633 | - return type (Java). | |
5634 | ||
5635 | The term "physname" is a bit confusing. | |
5636 | For C++, for example, it is the demangled name. | |
5637 | For Go, for example, it's the mangled name. | |
94af9270 | 5638 | |
af6b7be1 JB |
5639 | For Ada, return the DIE's linkage name rather than the fully qualified |
5640 | name. PHYSNAME is ignored.. | |
5641 | ||
94af9270 KS |
5642 | The result is allocated on the objfile_obstack and canonicalized. */ |
5643 | ||
5644 | static const char * | |
5645 | dwarf2_compute_name (char *name, struct die_info *die, struct dwarf2_cu *cu, | |
5646 | int physname) | |
5647 | { | |
bb5ed363 DE |
5648 | struct objfile *objfile = cu->objfile; |
5649 | ||
94af9270 KS |
5650 | if (name == NULL) |
5651 | name = dwarf2_name (die, cu); | |
5652 | ||
f55ee35c JK |
5653 | /* For Fortran GDB prefers DW_AT_*linkage_name if present but otherwise |
5654 | compute it by typename_concat inside GDB. */ | |
5655 | if (cu->language == language_ada | |
5656 | || (cu->language == language_fortran && physname)) | |
5657 | { | |
5658 | /* For Ada unit, we prefer the linkage name over the name, as | |
5659 | the former contains the exported name, which the user expects | |
5660 | to be able to reference. Ideally, we want the user to be able | |
5661 | to reference this entity using either natural or linkage name, | |
5662 | but we haven't started looking at this enhancement yet. */ | |
5663 | struct attribute *attr; | |
5664 | ||
5665 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
5666 | if (attr == NULL) | |
5667 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
5668 | if (attr && DW_STRING (attr)) | |
5669 | return DW_STRING (attr); | |
5670 | } | |
5671 | ||
94af9270 KS |
5672 | /* These are the only languages we know how to qualify names in. */ |
5673 | if (name != NULL | |
f55ee35c JK |
5674 | && (cu->language == language_cplus || cu->language == language_java |
5675 | || cu->language == language_fortran)) | |
94af9270 KS |
5676 | { |
5677 | if (die_needs_namespace (die, cu)) | |
5678 | { | |
5679 | long length; | |
0d5cff50 | 5680 | const char *prefix; |
94af9270 KS |
5681 | struct ui_file *buf; |
5682 | ||
5683 | prefix = determine_prefix (die, cu); | |
5684 | buf = mem_fileopen (); | |
5685 | if (*prefix != '\0') | |
5686 | { | |
f55ee35c JK |
5687 | char *prefixed_name = typename_concat (NULL, prefix, name, |
5688 | physname, cu); | |
9a619af0 | 5689 | |
94af9270 KS |
5690 | fputs_unfiltered (prefixed_name, buf); |
5691 | xfree (prefixed_name); | |
5692 | } | |
5693 | else | |
62d5b8da | 5694 | fputs_unfiltered (name, buf); |
94af9270 | 5695 | |
98bfdba5 PA |
5696 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
5697 | as children with DW_TAG_template_type_param or | |
5698 | DW_TAG_value_type_param. If the latter, add them to the name | |
5699 | here. If the name already has template parameters, then | |
5700 | skip this step; some versions of GCC emit both, and | |
5701 | it is more efficient to use the pre-computed name. | |
5702 | ||
5703 | Something to keep in mind about this process: it is very | |
5704 | unlikely, or in some cases downright impossible, to produce | |
5705 | something that will match the mangled name of a function. | |
5706 | If the definition of the function has the same debug info, | |
5707 | we should be able to match up with it anyway. But fallbacks | |
5708 | using the minimal symbol, for instance to find a method | |
5709 | implemented in a stripped copy of libstdc++, will not work. | |
5710 | If we do not have debug info for the definition, we will have to | |
5711 | match them up some other way. | |
5712 | ||
5713 | When we do name matching there is a related problem with function | |
5714 | templates; two instantiated function templates are allowed to | |
5715 | differ only by their return types, which we do not add here. */ | |
5716 | ||
5717 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
5718 | { | |
5719 | struct attribute *attr; | |
5720 | struct die_info *child; | |
5721 | int first = 1; | |
5722 | ||
5723 | die->building_fullname = 1; | |
5724 | ||
5725 | for (child = die->child; child != NULL; child = child->sibling) | |
5726 | { | |
5727 | struct type *type; | |
12df843f | 5728 | LONGEST value; |
98bfdba5 PA |
5729 | gdb_byte *bytes; |
5730 | struct dwarf2_locexpr_baton *baton; | |
5731 | struct value *v; | |
5732 | ||
5733 | if (child->tag != DW_TAG_template_type_param | |
5734 | && child->tag != DW_TAG_template_value_param) | |
5735 | continue; | |
5736 | ||
5737 | if (first) | |
5738 | { | |
5739 | fputs_unfiltered ("<", buf); | |
5740 | first = 0; | |
5741 | } | |
5742 | else | |
5743 | fputs_unfiltered (", ", buf); | |
5744 | ||
5745 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
5746 | if (attr == NULL) | |
5747 | { | |
5748 | complaint (&symfile_complaints, | |
5749 | _("template parameter missing DW_AT_type")); | |
5750 | fputs_unfiltered ("UNKNOWN_TYPE", buf); | |
5751 | continue; | |
5752 | } | |
5753 | type = die_type (child, cu); | |
5754 | ||
5755 | if (child->tag == DW_TAG_template_type_param) | |
5756 | { | |
5757 | c_print_type (type, "", buf, -1, 0); | |
5758 | continue; | |
5759 | } | |
5760 | ||
5761 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
5762 | if (attr == NULL) | |
5763 | { | |
5764 | complaint (&symfile_complaints, | |
3e43a32a MS |
5765 | _("template parameter missing " |
5766 | "DW_AT_const_value")); | |
98bfdba5 PA |
5767 | fputs_unfiltered ("UNKNOWN_VALUE", buf); |
5768 | continue; | |
5769 | } | |
5770 | ||
5771 | dwarf2_const_value_attr (attr, type, name, | |
5772 | &cu->comp_unit_obstack, cu, | |
5773 | &value, &bytes, &baton); | |
5774 | ||
5775 | if (TYPE_NOSIGN (type)) | |
5776 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
5777 | changed, this can use value_print instead. */ | |
5778 | c_printchar (value, type, buf); | |
5779 | else | |
5780 | { | |
5781 | struct value_print_options opts; | |
5782 | ||
5783 | if (baton != NULL) | |
5784 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
5785 | baton->data, | |
5786 | baton->size, | |
5787 | baton->per_cu); | |
5788 | else if (bytes != NULL) | |
5789 | { | |
5790 | v = allocate_value (type); | |
5791 | memcpy (value_contents_writeable (v), bytes, | |
5792 | TYPE_LENGTH (type)); | |
5793 | } | |
5794 | else | |
5795 | v = value_from_longest (type, value); | |
5796 | ||
3e43a32a MS |
5797 | /* Specify decimal so that we do not depend on |
5798 | the radix. */ | |
98bfdba5 PA |
5799 | get_formatted_print_options (&opts, 'd'); |
5800 | opts.raw = 1; | |
5801 | value_print (v, buf, &opts); | |
5802 | release_value (v); | |
5803 | value_free (v); | |
5804 | } | |
5805 | } | |
5806 | ||
5807 | die->building_fullname = 0; | |
5808 | ||
5809 | if (!first) | |
5810 | { | |
5811 | /* Close the argument list, with a space if necessary | |
5812 | (nested templates). */ | |
5813 | char last_char = '\0'; | |
5814 | ui_file_put (buf, do_ui_file_peek_last, &last_char); | |
5815 | if (last_char == '>') | |
5816 | fputs_unfiltered (" >", buf); | |
5817 | else | |
5818 | fputs_unfiltered (">", buf); | |
5819 | } | |
5820 | } | |
5821 | ||
94af9270 KS |
5822 | /* For Java and C++ methods, append formal parameter type |
5823 | information, if PHYSNAME. */ | |
6e70227d | 5824 | |
94af9270 KS |
5825 | if (physname && die->tag == DW_TAG_subprogram |
5826 | && (cu->language == language_cplus | |
5827 | || cu->language == language_java)) | |
5828 | { | |
5829 | struct type *type = read_type_die (die, cu); | |
5830 | ||
3167638f | 5831 | c_type_print_args (type, buf, 1, cu->language); |
94af9270 KS |
5832 | |
5833 | if (cu->language == language_java) | |
5834 | { | |
5835 | /* For java, we must append the return type to method | |
0963b4bd | 5836 | names. */ |
94af9270 KS |
5837 | if (die->tag == DW_TAG_subprogram) |
5838 | java_print_type (TYPE_TARGET_TYPE (type), "", buf, | |
5839 | 0, 0); | |
5840 | } | |
5841 | else if (cu->language == language_cplus) | |
5842 | { | |
60430eff DJ |
5843 | /* Assume that an artificial first parameter is |
5844 | "this", but do not crash if it is not. RealView | |
5845 | marks unnamed (and thus unused) parameters as | |
5846 | artificial; there is no way to differentiate | |
5847 | the two cases. */ | |
94af9270 KS |
5848 | if (TYPE_NFIELDS (type) > 0 |
5849 | && TYPE_FIELD_ARTIFICIAL (type, 0) | |
60430eff | 5850 | && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_PTR |
3e43a32a MS |
5851 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, |
5852 | 0)))) | |
94af9270 KS |
5853 | fputs_unfiltered (" const", buf); |
5854 | } | |
5855 | } | |
5856 | ||
bb5ed363 | 5857 | name = ui_file_obsavestring (buf, &objfile->objfile_obstack, |
94af9270 KS |
5858 | &length); |
5859 | ui_file_delete (buf); | |
5860 | ||
5861 | if (cu->language == language_cplus) | |
5862 | { | |
5863 | char *cname | |
5864 | = dwarf2_canonicalize_name (name, cu, | |
bb5ed363 | 5865 | &objfile->objfile_obstack); |
9a619af0 | 5866 | |
94af9270 KS |
5867 | if (cname != NULL) |
5868 | name = cname; | |
5869 | } | |
5870 | } | |
5871 | } | |
5872 | ||
5873 | return name; | |
5874 | } | |
5875 | ||
0114d602 DJ |
5876 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
5877 | If scope qualifiers are appropriate they will be added. The result | |
5878 | will be allocated on the objfile_obstack, or NULL if the DIE does | |
94af9270 KS |
5879 | not have a name. NAME may either be from a previous call to |
5880 | dwarf2_name or NULL. | |
5881 | ||
0963b4bd | 5882 | The output string will be canonicalized (if C++/Java). */ |
0114d602 DJ |
5883 | |
5884 | static const char * | |
94af9270 | 5885 | dwarf2_full_name (char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 5886 | { |
94af9270 KS |
5887 | return dwarf2_compute_name (name, die, cu, 0); |
5888 | } | |
0114d602 | 5889 | |
94af9270 KS |
5890 | /* Construct a physname for the given DIE in CU. NAME may either be |
5891 | from a previous call to dwarf2_name or NULL. The result will be | |
5892 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
5893 | name. | |
0114d602 | 5894 | |
94af9270 | 5895 | The output string will be canonicalized (if C++/Java). */ |
0114d602 | 5896 | |
94af9270 KS |
5897 | static const char * |
5898 | dwarf2_physname (char *name, struct die_info *die, struct dwarf2_cu *cu) | |
5899 | { | |
bb5ed363 | 5900 | struct objfile *objfile = cu->objfile; |
900e11f9 JK |
5901 | struct attribute *attr; |
5902 | const char *retval, *mangled = NULL, *canon = NULL; | |
5903 | struct cleanup *back_to; | |
5904 | int need_copy = 1; | |
5905 | ||
5906 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
5907 | on its own. */ | |
5908 | if (!die_needs_namespace (die, cu)) | |
5909 | return dwarf2_compute_name (name, die, cu, 1); | |
5910 | ||
5911 | back_to = make_cleanup (null_cleanup, NULL); | |
5912 | ||
5913 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
5914 | if (!attr) | |
5915 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
5916 | ||
5917 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB | |
5918 | has computed. */ | |
5919 | if (attr && DW_STRING (attr)) | |
5920 | { | |
5921 | char *demangled; | |
5922 | ||
5923 | mangled = DW_STRING (attr); | |
5924 | ||
5925 | /* Use DMGL_RET_DROP for C++ template functions to suppress their return | |
5926 | type. It is easier for GDB users to search for such functions as | |
5927 | `name(params)' than `long name(params)'. In such case the minimal | |
5928 | symbol names do not match the full symbol names but for template | |
5929 | functions there is never a need to look up their definition from their | |
5930 | declaration so the only disadvantage remains the minimal symbol | |
5931 | variant `long name(params)' does not have the proper inferior type. | |
5932 | */ | |
5933 | ||
a766d390 DE |
5934 | if (cu->language == language_go) |
5935 | { | |
5936 | /* This is a lie, but we already lie to the caller new_symbol_full. | |
5937 | new_symbol_full assumes we return the mangled name. | |
5938 | This just undoes that lie until things are cleaned up. */ | |
5939 | demangled = NULL; | |
5940 | } | |
5941 | else | |
5942 | { | |
5943 | demangled = cplus_demangle (mangled, | |
5944 | (DMGL_PARAMS | DMGL_ANSI | |
5945 | | (cu->language == language_java | |
5946 | ? DMGL_JAVA | DMGL_RET_POSTFIX | |
5947 | : DMGL_RET_DROP))); | |
5948 | } | |
900e11f9 JK |
5949 | if (demangled) |
5950 | { | |
5951 | make_cleanup (xfree, demangled); | |
5952 | canon = demangled; | |
5953 | } | |
5954 | else | |
5955 | { | |
5956 | canon = mangled; | |
5957 | need_copy = 0; | |
5958 | } | |
5959 | } | |
5960 | ||
5961 | if (canon == NULL || check_physname) | |
5962 | { | |
5963 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
5964 | ||
5965 | if (canon != NULL && strcmp (physname, canon) != 0) | |
5966 | { | |
5967 | /* It may not mean a bug in GDB. The compiler could also | |
5968 | compute DW_AT_linkage_name incorrectly. But in such case | |
5969 | GDB would need to be bug-to-bug compatible. */ | |
5970 | ||
5971 | complaint (&symfile_complaints, | |
5972 | _("Computed physname <%s> does not match demangled <%s> " | |
5973 | "(from linkage <%s>) - DIE at 0x%x [in module %s]"), | |
b64f50a1 | 5974 | physname, canon, mangled, die->offset.sect_off, objfile->name); |
900e11f9 JK |
5975 | |
5976 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
5977 | is available here - over computed PHYSNAME. It is safer | |
5978 | against both buggy GDB and buggy compilers. */ | |
5979 | ||
5980 | retval = canon; | |
5981 | } | |
5982 | else | |
5983 | { | |
5984 | retval = physname; | |
5985 | need_copy = 0; | |
5986 | } | |
5987 | } | |
5988 | else | |
5989 | retval = canon; | |
5990 | ||
5991 | if (need_copy) | |
5992 | retval = obsavestring (retval, strlen (retval), | |
bb5ed363 | 5993 | &objfile->objfile_obstack); |
900e11f9 JK |
5994 | |
5995 | do_cleanups (back_to); | |
5996 | return retval; | |
0114d602 DJ |
5997 | } |
5998 | ||
27aa8d6a SW |
5999 | /* Read the import statement specified by the given die and record it. */ |
6000 | ||
6001 | static void | |
6002 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
6003 | { | |
bb5ed363 | 6004 | struct objfile *objfile = cu->objfile; |
27aa8d6a | 6005 | struct attribute *import_attr; |
32019081 | 6006 | struct die_info *imported_die, *child_die; |
de4affc9 | 6007 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 6008 | const char *imported_name; |
794684b6 | 6009 | const char *imported_name_prefix; |
13387711 SW |
6010 | const char *canonical_name; |
6011 | const char *import_alias; | |
6012 | const char *imported_declaration = NULL; | |
794684b6 | 6013 | const char *import_prefix; |
32019081 JK |
6014 | VEC (const_char_ptr) *excludes = NULL; |
6015 | struct cleanup *cleanups; | |
13387711 SW |
6016 | |
6017 | char *temp; | |
27aa8d6a SW |
6018 | |
6019 | import_attr = dwarf2_attr (die, DW_AT_import, cu); | |
6020 | if (import_attr == NULL) | |
6021 | { | |
6022 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
6023 | dwarf_tag_name (die->tag)); | |
6024 | return; | |
6025 | } | |
6026 | ||
de4affc9 CC |
6027 | imported_cu = cu; |
6028 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
6029 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
6030 | if (imported_name == NULL) |
6031 | { | |
6032 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
6033 | ||
6034 | The import in the following code: | |
6035 | namespace A | |
6036 | { | |
6037 | typedef int B; | |
6038 | } | |
6039 | ||
6040 | int main () | |
6041 | { | |
6042 | using A::B; | |
6043 | B b; | |
6044 | return b; | |
6045 | } | |
6046 | ||
6047 | ... | |
6048 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
6049 | <52> DW_AT_decl_file : 1 | |
6050 | <53> DW_AT_decl_line : 6 | |
6051 | <54> DW_AT_import : <0x75> | |
6052 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
6053 | <59> DW_AT_name : B | |
6054 | <5b> DW_AT_decl_file : 1 | |
6055 | <5c> DW_AT_decl_line : 2 | |
6056 | <5d> DW_AT_type : <0x6e> | |
6057 | ... | |
6058 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
6059 | <76> DW_AT_byte_size : 4 | |
6060 | <77> DW_AT_encoding : 5 (signed) | |
6061 | ||
6062 | imports the wrong die ( 0x75 instead of 0x58 ). | |
6063 | This case will be ignored until the gcc bug is fixed. */ | |
6064 | return; | |
6065 | } | |
6066 | ||
82856980 SW |
6067 | /* Figure out the local name after import. */ |
6068 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 6069 | |
794684b6 SW |
6070 | /* Figure out where the statement is being imported to. */ |
6071 | import_prefix = determine_prefix (die, cu); | |
6072 | ||
6073 | /* Figure out what the scope of the imported die is and prepend it | |
6074 | to the name of the imported die. */ | |
de4affc9 | 6075 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 6076 | |
f55ee35c JK |
6077 | if (imported_die->tag != DW_TAG_namespace |
6078 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 6079 | { |
13387711 SW |
6080 | imported_declaration = imported_name; |
6081 | canonical_name = imported_name_prefix; | |
794684b6 | 6082 | } |
13387711 | 6083 | else if (strlen (imported_name_prefix) > 0) |
794684b6 | 6084 | { |
13387711 SW |
6085 | temp = alloca (strlen (imported_name_prefix) |
6086 | + 2 + strlen (imported_name) + 1); | |
6087 | strcpy (temp, imported_name_prefix); | |
6088 | strcat (temp, "::"); | |
6089 | strcat (temp, imported_name); | |
6090 | canonical_name = temp; | |
794684b6 | 6091 | } |
13387711 SW |
6092 | else |
6093 | canonical_name = imported_name; | |
794684b6 | 6094 | |
32019081 JK |
6095 | cleanups = make_cleanup (VEC_cleanup (const_char_ptr), &excludes); |
6096 | ||
6097 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) | |
6098 | for (child_die = die->child; child_die && child_die->tag; | |
6099 | child_die = sibling_die (child_die)) | |
6100 | { | |
6101 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
6102 | represented by an imported module entry with an import attribute | |
6103 | referring to the module and owned entries corresponding to those | |
6104 | entities that are renamed as part of being imported. */ | |
6105 | ||
6106 | if (child_die->tag != DW_TAG_imported_declaration) | |
6107 | { | |
6108 | complaint (&symfile_complaints, | |
6109 | _("child DW_TAG_imported_declaration expected " | |
6110 | "- DIE at 0x%x [in module %s]"), | |
b64f50a1 | 6111 | child_die->offset.sect_off, objfile->name); |
32019081 JK |
6112 | continue; |
6113 | } | |
6114 | ||
6115 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
6116 | if (import_attr == NULL) | |
6117 | { | |
6118 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
6119 | dwarf_tag_name (child_die->tag)); | |
6120 | continue; | |
6121 | } | |
6122 | ||
6123 | imported_cu = cu; | |
6124 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
6125 | &imported_cu); | |
6126 | imported_name = dwarf2_name (imported_die, imported_cu); | |
6127 | if (imported_name == NULL) | |
6128 | { | |
6129 | complaint (&symfile_complaints, | |
6130 | _("child DW_TAG_imported_declaration has unknown " | |
6131 | "imported name - DIE at 0x%x [in module %s]"), | |
b64f50a1 | 6132 | child_die->offset.sect_off, objfile->name); |
32019081 JK |
6133 | continue; |
6134 | } | |
6135 | ||
6136 | VEC_safe_push (const_char_ptr, excludes, imported_name); | |
6137 | ||
6138 | process_die (child_die, cu); | |
6139 | } | |
6140 | ||
c0cc3a76 SW |
6141 | cp_add_using_directive (import_prefix, |
6142 | canonical_name, | |
6143 | import_alias, | |
13387711 | 6144 | imported_declaration, |
32019081 | 6145 | excludes, |
bb5ed363 | 6146 | &objfile->objfile_obstack); |
32019081 JK |
6147 | |
6148 | do_cleanups (cleanups); | |
27aa8d6a SW |
6149 | } |
6150 | ||
ae2de4f8 DE |
6151 | /* Cleanup function for read_file_scope. */ |
6152 | ||
cb1df416 DJ |
6153 | static void |
6154 | free_cu_line_header (void *arg) | |
6155 | { | |
6156 | struct dwarf2_cu *cu = arg; | |
6157 | ||
6158 | free_line_header (cu->line_header); | |
6159 | cu->line_header = NULL; | |
6160 | } | |
6161 | ||
9291a0cd TT |
6162 | static void |
6163 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu, | |
6164 | char **name, char **comp_dir) | |
6165 | { | |
6166 | struct attribute *attr; | |
6167 | ||
6168 | *name = NULL; | |
6169 | *comp_dir = NULL; | |
6170 | ||
6171 | /* Find the filename. Do not use dwarf2_name here, since the filename | |
6172 | is not a source language identifier. */ | |
6173 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
6174 | if (attr) | |
6175 | { | |
6176 | *name = DW_STRING (attr); | |
6177 | } | |
6178 | ||
6179 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); | |
6180 | if (attr) | |
6181 | *comp_dir = DW_STRING (attr); | |
6182 | else if (*name != NULL && IS_ABSOLUTE_PATH (*name)) | |
6183 | { | |
6184 | *comp_dir = ldirname (*name); | |
6185 | if (*comp_dir != NULL) | |
6186 | make_cleanup (xfree, *comp_dir); | |
6187 | } | |
6188 | if (*comp_dir != NULL) | |
6189 | { | |
6190 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
6191 | directory, get rid of it. */ | |
6192 | char *cp = strchr (*comp_dir, ':'); | |
6193 | ||
6194 | if (cp && cp != *comp_dir && cp[-1] == '.' && cp[1] == '/') | |
6195 | *comp_dir = cp + 1; | |
6196 | } | |
6197 | ||
6198 | if (*name == NULL) | |
6199 | *name = "<unknown>"; | |
6200 | } | |
6201 | ||
f3f5162e DE |
6202 | /* Handle DW_AT_stmt_list for a compilation unit or type unit. |
6203 | DIE is the DW_TAG_compile_unit or DW_TAG_type_unit die for CU. | |
6204 | COMP_DIR is the compilation directory. | |
6205 | WANT_LINE_INFO is non-zero if the pc/line-number mapping is needed. */ | |
2ab95328 TT |
6206 | |
6207 | static void | |
6208 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
f3f5162e | 6209 | const char *comp_dir, int want_line_info) |
2ab95328 TT |
6210 | { |
6211 | struct attribute *attr; | |
2ab95328 | 6212 | |
2ab95328 TT |
6213 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
6214 | if (attr) | |
6215 | { | |
6216 | unsigned int line_offset = DW_UNSND (attr); | |
6217 | struct line_header *line_header | |
3019eac3 | 6218 | = dwarf_decode_line_header (line_offset, cu); |
2ab95328 TT |
6219 | |
6220 | if (line_header) | |
dee91e82 DE |
6221 | { |
6222 | cu->line_header = line_header; | |
6223 | make_cleanup (free_cu_line_header, cu); | |
f3f5162e | 6224 | dwarf_decode_lines (line_header, comp_dir, cu, NULL, want_line_info); |
dee91e82 | 6225 | } |
2ab95328 TT |
6226 | } |
6227 | } | |
6228 | ||
ae2de4f8 DE |
6229 | /* Process DW_TAG_compile_unit. */ |
6230 | ||
c906108c | 6231 | static void |
e7c27a73 | 6232 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 6233 | { |
dee91e82 | 6234 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
debd256d | 6235 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2acceee2 | 6236 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
6237 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
6238 | struct attribute *attr; | |
e1024ff1 | 6239 | char *name = NULL; |
c906108c SS |
6240 | char *comp_dir = NULL; |
6241 | struct die_info *child_die; | |
6242 | bfd *abfd = objfile->obfd; | |
e142c38c | 6243 | CORE_ADDR baseaddr; |
6e70227d | 6244 | |
e142c38c | 6245 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c | 6246 | |
fae299cd | 6247 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
6248 | |
6249 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
6250 | from finish_block. */ | |
2acceee2 | 6251 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c SS |
6252 | lowpc = highpc; |
6253 | lowpc += baseaddr; | |
6254 | highpc += baseaddr; | |
6255 | ||
9291a0cd | 6256 | find_file_and_directory (die, cu, &name, &comp_dir); |
e1024ff1 | 6257 | |
dee91e82 | 6258 | prepare_one_comp_unit (cu, die); |
303b6f5d | 6259 | |
f4b8a18d KW |
6260 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
6261 | standardised yet. As a workaround for the language detection we fall | |
6262 | back to the DW_AT_producer string. */ | |
6263 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
6264 | cu->language = language_opencl; | |
6265 | ||
3019eac3 DE |
6266 | /* Similar hack for Go. */ |
6267 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
6268 | set_cu_language (DW_LANG_Go, cu); | |
6269 | ||
6270 | /* We assume that we're processing GCC output. */ | |
6271 | processing_gcc_compilation = 2; | |
6272 | ||
6273 | processing_has_namespace_info = 0; | |
6274 | ||
6275 | start_symtab (name, comp_dir, lowpc); | |
6276 | record_debugformat ("DWARF 2"); | |
6277 | record_producer (cu->producer); | |
6278 | ||
6279 | /* Decode line number information if present. We do this before | |
6280 | processing child DIEs, so that the line header table is available | |
6281 | for DW_AT_decl_file. */ | |
6282 | handle_DW_AT_stmt_list (die, cu, comp_dir, 1); | |
6283 | ||
6284 | /* Process all dies in compilation unit. */ | |
6285 | if (die->child != NULL) | |
6286 | { | |
6287 | child_die = die->child; | |
6288 | while (child_die && child_die->tag) | |
6289 | { | |
6290 | process_die (child_die, cu); | |
6291 | child_die = sibling_die (child_die); | |
6292 | } | |
6293 | } | |
6294 | ||
6295 | /* Decode macro information, if present. Dwarf 2 macro information | |
6296 | refers to information in the line number info statement program | |
6297 | header, so we can only read it if we've read the header | |
6298 | successfully. */ | |
6299 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
6300 | if (attr && cu->line_header) | |
6301 | { | |
6302 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
6303 | complaint (&symfile_complaints, | |
6304 | _("CU refers to both DW_AT_GNU_macros and DW_AT_macro_info")); | |
6305 | ||
6306 | dwarf_decode_macros (cu->line_header, DW_UNSND (attr), | |
6307 | comp_dir, abfd, cu, | |
fceca515 DE |
6308 | &dwarf2_per_objfile->macro, 1, |
6309 | ".debug_macro"); | |
3019eac3 DE |
6310 | } |
6311 | else | |
6312 | { | |
6313 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
6314 | if (attr && cu->line_header) | |
6315 | { | |
6316 | unsigned int macro_offset = DW_UNSND (attr); | |
6317 | ||
6318 | dwarf_decode_macros (cu->line_header, macro_offset, | |
6319 | comp_dir, abfd, cu, | |
fceca515 DE |
6320 | &dwarf2_per_objfile->macinfo, 0, |
6321 | ".debug_macinfo"); | |
3019eac3 DE |
6322 | } |
6323 | } | |
6324 | ||
6325 | do_cleanups (back_to); | |
6326 | } | |
6327 | ||
6328 | /* Process DW_TAG_type_unit. | |
6329 | For TUs we want to skip the first top level sibling if it's not the | |
6330 | actual type being defined by this TU. In this case the first top | |
6331 | level sibling is there to provide context only. */ | |
6332 | ||
6333 | static void | |
6334 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
6335 | { | |
6336 | struct objfile *objfile = cu->objfile; | |
6337 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); | |
6338 | CORE_ADDR lowpc; | |
6339 | struct attribute *attr; | |
6340 | char *name = NULL; | |
6341 | char *comp_dir = NULL; | |
6342 | struct die_info *child_die; | |
6343 | bfd *abfd = objfile->obfd; | |
6344 | ||
6345 | /* start_symtab needs a low pc, but we don't really have one. | |
6346 | Do what read_file_scope would do in the absence of such info. */ | |
6347 | lowpc = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
6348 | ||
6349 | /* Find the filename. Do not use dwarf2_name here, since the filename | |
6350 | is not a source language identifier. */ | |
6351 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
6352 | if (attr) | |
6353 | name = DW_STRING (attr); | |
6354 | ||
6355 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); | |
6356 | if (attr) | |
6357 | comp_dir = DW_STRING (attr); | |
6358 | else if (name != NULL && IS_ABSOLUTE_PATH (name)) | |
6359 | { | |
6360 | comp_dir = ldirname (name); | |
6361 | if (comp_dir != NULL) | |
6362 | make_cleanup (xfree, comp_dir); | |
6363 | } | |
6364 | ||
6365 | if (name == NULL) | |
6366 | name = "<unknown>"; | |
6367 | ||
6368 | prepare_one_comp_unit (cu, die); | |
6369 | ||
6370 | /* We assume that we're processing GCC output. */ | |
6371 | processing_gcc_compilation = 2; | |
6372 | ||
6373 | processing_has_namespace_info = 0; | |
6374 | ||
6375 | start_symtab (name, comp_dir, lowpc); | |
6376 | record_debugformat ("DWARF 2"); | |
6377 | record_producer (cu->producer); | |
6378 | ||
6379 | /* Decode line number information if present. We do this before | |
6380 | processing child DIEs, so that the line header table is available | |
6381 | for DW_AT_decl_file. | |
6382 | We don't need the pc/line-number mapping for type units. */ | |
6383 | handle_DW_AT_stmt_list (die, cu, comp_dir, 0); | |
6384 | ||
6385 | /* Process the dies in the type unit. */ | |
6386 | if (die->child == NULL) | |
6387 | { | |
6388 | dump_die_for_error (die); | |
6389 | error (_("Dwarf Error: Missing children for type unit [in module %s]"), | |
6390 | bfd_get_filename (abfd)); | |
6391 | } | |
6392 | ||
6393 | child_die = die->child; | |
6394 | ||
6395 | while (child_die && child_die->tag) | |
6396 | { | |
6397 | process_die (child_die, cu); | |
6398 | ||
6399 | child_die = sibling_die (child_die); | |
6400 | } | |
6401 | ||
6402 | do_cleanups (back_to); | |
6403 | } | |
6404 | \f | |
6405 | /* DWO files. */ | |
6406 | ||
6407 | static hashval_t | |
6408 | hash_dwo_file (const void *item) | |
6409 | { | |
6410 | const struct dwo_file *dwo_file = item; | |
6411 | ||
6412 | return htab_hash_string (dwo_file->dwo_name); | |
6413 | } | |
6414 | ||
6415 | static int | |
6416 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
6417 | { | |
6418 | const struct dwo_file *lhs = item_lhs; | |
6419 | const struct dwo_file *rhs = item_rhs; | |
6420 | ||
6421 | return strcmp (lhs->dwo_name, rhs->dwo_name) == 0; | |
6422 | } | |
6423 | ||
6424 | /* Allocate a hash table for DWO files. */ | |
6425 | ||
6426 | static htab_t | |
6427 | allocate_dwo_file_hash_table (void) | |
6428 | { | |
6429 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6430 | ||
6431 | return htab_create_alloc_ex (41, | |
6432 | hash_dwo_file, | |
6433 | eq_dwo_file, | |
6434 | NULL, | |
6435 | &objfile->objfile_obstack, | |
6436 | hashtab_obstack_allocate, | |
6437 | dummy_obstack_deallocate); | |
6438 | } | |
6439 | ||
6440 | static hashval_t | |
6441 | hash_dwo_unit (const void *item) | |
6442 | { | |
6443 | const struct dwo_unit *dwo_unit = item; | |
6444 | ||
6445 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
6446 | return dwo_unit->signature; | |
6447 | } | |
6448 | ||
6449 | static int | |
6450 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
6451 | { | |
6452 | const struct dwo_unit *lhs = item_lhs; | |
6453 | const struct dwo_unit *rhs = item_rhs; | |
6454 | ||
6455 | /* The signature is assumed to be unique within the DWO file. | |
6456 | So while object file CU dwo_id's always have the value zero, | |
6457 | that's OK, assuming each object file DWO file has only one CU, | |
6458 | and that's the rule for now. */ | |
6459 | return lhs->signature == rhs->signature; | |
6460 | } | |
6461 | ||
6462 | /* Allocate a hash table for DWO CUs,TUs. | |
6463 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
6464 | ||
6465 | static htab_t | |
6466 | allocate_dwo_unit_table (struct objfile *objfile) | |
6467 | { | |
6468 | /* Start out with a pretty small number. | |
6469 | Generally DWO files contain only one CU and maybe some TUs. */ | |
6470 | return htab_create_alloc_ex (3, | |
6471 | hash_dwo_unit, | |
6472 | eq_dwo_unit, | |
6473 | NULL, | |
6474 | &objfile->objfile_obstack, | |
6475 | hashtab_obstack_allocate, | |
6476 | dummy_obstack_deallocate); | |
6477 | } | |
6478 | ||
6479 | /* This function is mapped across the sections and remembers the offset and | |
6480 | size of each of the DWO debugging sections we are interested in. */ | |
6481 | ||
6482 | static void | |
6483 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, void *dwo_file_ptr) | |
6484 | { | |
6485 | struct dwo_file *dwo_file = dwo_file_ptr; | |
6486 | const struct dwo_section_names *names = &dwo_section_names; | |
6487 | ||
6488 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
6489 | { | |
6490 | dwo_file->sections.abbrev.asection = sectp; | |
6491 | dwo_file->sections.abbrev.size = bfd_get_section_size (sectp); | |
6492 | } | |
6493 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
6494 | { | |
6495 | dwo_file->sections.info.asection = sectp; | |
6496 | dwo_file->sections.info.size = bfd_get_section_size (sectp); | |
6497 | } | |
6498 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
6499 | { | |
6500 | dwo_file->sections.line.asection = sectp; | |
6501 | dwo_file->sections.line.size = bfd_get_section_size (sectp); | |
6502 | } | |
6503 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
6504 | { | |
6505 | dwo_file->sections.loc.asection = sectp; | |
6506 | dwo_file->sections.loc.size = bfd_get_section_size (sectp); | |
6507 | } | |
6508 | else if (section_is_p (sectp->name, &names->str_dwo)) | |
6509 | { | |
6510 | dwo_file->sections.str.asection = sectp; | |
6511 | dwo_file->sections.str.size = bfd_get_section_size (sectp); | |
6512 | } | |
6513 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
6514 | { | |
6515 | dwo_file->sections.str_offsets.asection = sectp; | |
6516 | dwo_file->sections.str_offsets.size = bfd_get_section_size (sectp); | |
6517 | } | |
6518 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
6519 | { | |
6520 | struct dwarf2_section_info type_section; | |
6521 | ||
6522 | memset (&type_section, 0, sizeof (type_section)); | |
6523 | type_section.asection = sectp; | |
6524 | type_section.size = bfd_get_section_size (sectp); | |
6525 | VEC_safe_push (dwarf2_section_info_def, dwo_file->sections.types, | |
6526 | &type_section); | |
6527 | } | |
6528 | } | |
6529 | ||
6530 | /* Structure used to pass data to create_debug_info_hash_table_reader. */ | |
6531 | ||
6532 | struct create_dwo_info_table_data | |
6533 | { | |
6534 | struct dwo_file *dwo_file; | |
6535 | htab_t cu_htab; | |
6536 | }; | |
6537 | ||
6538 | /* die_reader_func for create_debug_info_hash_table. */ | |
6539 | ||
6540 | static void | |
6541 | create_debug_info_hash_table_reader (const struct die_reader_specs *reader, | |
6542 | gdb_byte *info_ptr, | |
6543 | struct die_info *comp_unit_die, | |
6544 | int has_children, | |
6545 | void *datap) | |
6546 | { | |
6547 | struct dwarf2_cu *cu = reader->cu; | |
6548 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6549 | sect_offset offset = cu->per_cu->offset; | |
6550 | struct dwarf2_section_info *section = cu->per_cu->info_or_types_section; | |
6551 | struct create_dwo_info_table_data *data = datap; | |
6552 | struct dwo_file *dwo_file = data->dwo_file; | |
6553 | htab_t cu_htab = data->cu_htab; | |
6554 | void **slot; | |
6555 | struct attribute *attr; | |
6556 | struct dwo_unit *dwo_unit; | |
6557 | ||
6558 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
6559 | if (attr == NULL) | |
6560 | { | |
6561 | error (_("Dwarf Error: debug entry at offset 0x%x is missing" | |
6562 | " its dwo_id [in module %s]"), | |
6563 | offset.sect_off, dwo_file->dwo_name); | |
6564 | return; | |
6565 | } | |
6566 | ||
6567 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
6568 | dwo_unit->dwo_file = dwo_file; | |
6569 | dwo_unit->signature = DW_UNSND (attr); | |
6570 | dwo_unit->info_or_types_section = section; | |
6571 | dwo_unit->offset = offset; | |
6572 | dwo_unit->length = cu->per_cu->length; | |
6573 | ||
6574 | slot = htab_find_slot (cu_htab, dwo_unit, INSERT); | |
6575 | gdb_assert (slot != NULL); | |
6576 | if (*slot != NULL) | |
6577 | { | |
6578 | const struct dwo_unit *dup_dwo_unit = *slot; | |
6579 | ||
6580 | complaint (&symfile_complaints, | |
6581 | _("debug entry at offset 0x%x is duplicate to the entry at" | |
6582 | " offset 0x%x, dwo_id 0x%s [in module %s]"), | |
6583 | offset.sect_off, dup_dwo_unit->offset.sect_off, | |
6584 | phex (dwo_unit->signature, sizeof (dwo_unit->signature)), | |
6585 | dwo_file->dwo_name); | |
6586 | } | |
6587 | else | |
6588 | *slot = dwo_unit; | |
6589 | ||
6590 | if (dwarf2_die_debug) | |
6591 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, dwo_id 0x%s\n", | |
6592 | offset.sect_off, | |
6593 | phex (dwo_unit->signature, | |
6594 | sizeof (dwo_unit->signature))); | |
6595 | } | |
6596 | ||
6597 | /* Create a hash table to map DWO IDs to their CU entry in .debug_info.dwo. */ | |
6598 | ||
6599 | static htab_t | |
6600 | create_debug_info_hash_table (struct dwo_file *dwo_file) | |
6601 | { | |
6602 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6603 | struct dwarf2_section_info *section = &dwo_file->sections.info; | |
6604 | bfd *abfd; | |
6605 | htab_t cu_htab; | |
6606 | gdb_byte *info_ptr, *end_ptr; | |
6607 | struct create_dwo_info_table_data create_dwo_info_table_data; | |
6608 | ||
6609 | dwarf2_read_section (objfile, section); | |
6610 | info_ptr = section->buffer; | |
6611 | ||
6612 | if (info_ptr == NULL) | |
6613 | return NULL; | |
6614 | ||
6615 | /* We can't set abfd until now because the section may be empty or | |
6616 | not present, in which case section->asection will be NULL. */ | |
6617 | abfd = section->asection->owner; | |
6618 | ||
6619 | if (dwarf2_die_debug) | |
6620 | fprintf_unfiltered (gdb_stdlog, "Reading .debug_info.dwo for %s:\n", | |
6621 | bfd_get_filename (abfd)); | |
6622 | ||
6623 | cu_htab = allocate_dwo_unit_table (objfile); | |
6624 | ||
6625 | create_dwo_info_table_data.dwo_file = dwo_file; | |
6626 | create_dwo_info_table_data.cu_htab = cu_htab; | |
6627 | ||
6628 | end_ptr = info_ptr + section->size; | |
6629 | while (info_ptr < end_ptr) | |
6630 | { | |
6631 | struct dwarf2_per_cu_data per_cu; | |
6632 | ||
6633 | memset (&per_cu, 0, sizeof (per_cu)); | |
6634 | per_cu.objfile = objfile; | |
6635 | per_cu.is_debug_types = 0; | |
6636 | per_cu.offset.sect_off = info_ptr - section->buffer; | |
6637 | per_cu.info_or_types_section = section; | |
6638 | ||
6639 | init_cutu_and_read_dies_no_follow (&per_cu, | |
6640 | &dwo_file->sections.abbrev, | |
6641 | dwo_file, | |
6642 | create_debug_info_hash_table_reader, | |
6643 | &create_dwo_info_table_data); | |
6644 | ||
6645 | info_ptr += per_cu.length; | |
6646 | } | |
6647 | ||
6648 | return cu_htab; | |
6649 | } | |
6650 | ||
6651 | /* Subroutine of open_dwo_file to simplify it. | |
6652 | Open the file specified by FILE_NAME and hand it off to BFD for | |
6653 | preliminary analysis. Return a newly initialized bfd *, which | |
6654 | includes a canonicalized copy of FILE_NAME. | |
6655 | In case of trouble, return NULL. | |
6656 | NOTE: This function is derived from symfile_bfd_open. */ | |
6657 | ||
6658 | static bfd * | |
6659 | try_open_dwo_file (const char *file_name) | |
6660 | { | |
6661 | bfd *sym_bfd; | |
6662 | int desc; | |
6663 | char *absolute_name; | |
6664 | char *name; | |
6665 | ||
6666 | desc = openp (debug_file_directory, OPF_TRY_CWD_FIRST, file_name, | |
6667 | O_RDONLY | O_BINARY, &absolute_name); | |
6668 | if (desc < 0) | |
6669 | return NULL; | |
6670 | ||
6671 | sym_bfd = bfd_fopen (absolute_name, gnutarget, FOPEN_RB, desc); | |
6672 | if (!sym_bfd) | |
6673 | { | |
6674 | close (desc); | |
6675 | xfree (absolute_name); | |
6676 | return NULL; | |
6677 | } | |
6678 | bfd_set_cacheable (sym_bfd, 1); | |
6679 | ||
6680 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
6681 | { | |
6682 | bfd_close (sym_bfd); /* This also closes desc. */ | |
6683 | xfree (absolute_name); | |
6684 | return NULL; | |
6685 | } | |
6686 | ||
6687 | /* bfd_usrdata exists for applications and libbfd must not touch it. */ | |
6688 | gdb_assert (bfd_usrdata (sym_bfd) == NULL); | |
6689 | ||
6690 | return sym_bfd; | |
6691 | } | |
6692 | ||
6693 | /* Try to open DWO file DWO_NAME. | |
6694 | COMP_DIR is the DW_AT_comp_dir attribute. | |
6695 | The result is the bfd handle of the file. | |
6696 | If there is a problem finding or opening the file, return NULL. | |
6697 | Upon success, the canonicalized path of the file is stored in the bfd, | |
6698 | same as symfile_bfd_open. */ | |
6699 | ||
6700 | static bfd * | |
6701 | open_dwo_file (const char *dwo_name, const char *comp_dir) | |
6702 | { | |
6703 | bfd *abfd; | |
6704 | char *path_to_try, *debug_dir; | |
6705 | ||
6706 | if (IS_ABSOLUTE_PATH (dwo_name)) | |
6707 | return try_open_dwo_file (dwo_name); | |
6708 | ||
6709 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
6710 | ||
6711 | if (comp_dir != NULL) | |
6712 | { | |
6713 | char *path_to_try = concat (comp_dir, SLASH_STRING, dwo_name, NULL); | |
6714 | ||
6715 | /* NOTE: If comp_dir is a relative path, this will also try the | |
6716 | search path, which seems useful. */ | |
6717 | abfd = try_open_dwo_file (path_to_try); | |
6718 | xfree (path_to_try); | |
6719 | if (abfd != NULL) | |
6720 | return abfd; | |
6721 | } | |
6722 | ||
6723 | /* That didn't work, try debug-file-directory, which, despite its name, | |
6724 | is a list of paths. */ | |
6725 | ||
6726 | if (*debug_file_directory == '\0') | |
6727 | return NULL; | |
6728 | ||
6729 | return try_open_dwo_file (dwo_name); | |
6730 | } | |
6731 | ||
6732 | /* Initialize the use of the DWO file specified by DWO_NAME. */ | |
6733 | ||
6734 | static struct dwo_file * | |
6735 | init_dwo_file (const char *dwo_name, const char *comp_dir) | |
6736 | { | |
6737 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6738 | struct dwo_file *dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6739 | struct dwo_file); | |
6740 | bfd *abfd; | |
6741 | struct cleanup *cleanups; | |
6742 | ||
6743 | if (dwarf2_die_debug) | |
6744 | fprintf_unfiltered (gdb_stdlog, "Reading DWO file %s:\n", dwo_name); | |
6745 | ||
6746 | abfd = open_dwo_file (dwo_name, comp_dir); | |
6747 | if (abfd == NULL) | |
6748 | return NULL; | |
6749 | dwo_file->dwo_name = dwo_name; | |
6750 | dwo_file->dwo_bfd = abfd; | |
6751 | ||
6752 | cleanups = make_cleanup (free_dwo_file_cleanup, dwo_file); | |
6753 | ||
6754 | bfd_map_over_sections (abfd, dwarf2_locate_dwo_sections, dwo_file); | |
6755 | ||
6756 | dwo_file->cus = create_debug_info_hash_table (dwo_file); | |
6757 | ||
6758 | dwo_file->tus = create_debug_types_hash_table (dwo_file, | |
6759 | dwo_file->sections.types); | |
6760 | ||
6761 | discard_cleanups (cleanups); | |
6762 | ||
6763 | return dwo_file; | |
6764 | } | |
6765 | ||
6766 | /* Lookup DWO file DWO_NAME. */ | |
6767 | ||
6768 | static struct dwo_file * | |
6769 | lookup_dwo_file (char *dwo_name, const char *comp_dir) | |
6770 | { | |
6771 | struct dwo_file *dwo_file; | |
6772 | struct dwo_file find_entry; | |
6773 | void **slot; | |
6774 | ||
6775 | if (dwarf2_per_objfile->dwo_files == NULL) | |
6776 | dwarf2_per_objfile->dwo_files = allocate_dwo_file_hash_table (); | |
6777 | ||
6778 | /* Have we already seen this DWO file? */ | |
6779 | find_entry.dwo_name = dwo_name; | |
6780 | slot = htab_find_slot (dwarf2_per_objfile->dwo_files, &find_entry, INSERT); | |
6781 | ||
6782 | /* If not, read it in and build a table of the DWOs it contains. */ | |
6783 | if (*slot == NULL) | |
6784 | *slot = init_dwo_file (dwo_name, comp_dir); | |
6785 | ||
6786 | /* NOTE: This will be NULL if unable to open the file. */ | |
6787 | dwo_file = *slot; | |
6788 | ||
6789 | return dwo_file; | |
6790 | } | |
6791 | ||
6792 | /* Lookup the DWO CU referenced from THIS_CU in DWO file DWO_NAME. | |
6793 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. | |
6794 | SIGNATURE is the "dwo_id" of the CU (for consistency we use the same | |
6795 | nomenclature as TUs). | |
6796 | The result is the DWO CU or NULL if we didn't find it | |
6797 | (dwo_id mismatch or couldn't find the DWO file). */ | |
6798 | ||
6799 | static struct dwo_unit * | |
6800 | lookup_dwo_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
6801 | char *dwo_name, const char *comp_dir, | |
6802 | ULONGEST signature) | |
6803 | { | |
6804 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6805 | struct dwo_file *dwo_file; | |
6806 | ||
6807 | dwo_file = lookup_dwo_file (dwo_name, comp_dir); | |
6808 | if (dwo_file == NULL) | |
6809 | return NULL; | |
6810 | ||
6811 | /* Look up the DWO using its signature(dwo_id). */ | |
6812 | ||
6813 | if (dwo_file->cus != NULL) | |
6814 | { | |
6815 | struct dwo_unit find_dwo_cu, *dwo_cu; | |
6816 | ||
6817 | find_dwo_cu.signature = signature; | |
6818 | dwo_cu = htab_find (dwo_file->cus, &find_dwo_cu); | |
a766d390 | 6819 | |
3019eac3 DE |
6820 | if (dwo_cu != NULL) |
6821 | return dwo_cu; | |
6822 | } | |
c906108c | 6823 | |
3019eac3 | 6824 | /* We didn't find it. This must mean a dwo_id mismatch. */ |
df8a16a1 | 6825 | |
3019eac3 DE |
6826 | complaint (&symfile_complaints, |
6827 | _("Could not find DWO CU referenced by CU at offset 0x%x" | |
6828 | " [in module %s]"), | |
6829 | this_cu->offset.sect_off, objfile->name); | |
6830 | return NULL; | |
6831 | } | |
c906108c | 6832 | |
3019eac3 DE |
6833 | /* Lookup the DWO TU referenced from THIS_TU in DWO file DWO_NAME. |
6834 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. | |
6835 | The result is the DWO CU or NULL if we didn't find it | |
6836 | (dwo_id mismatch or couldn't find the DWO file). */ | |
debd256d | 6837 | |
3019eac3 DE |
6838 | static struct dwo_unit * |
6839 | lookup_dwo_type_unit (struct signatured_type *this_tu, | |
6840 | char *dwo_name, const char *comp_dir) | |
6841 | { | |
6842 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6843 | struct dwo_file *dwo_file; | |
6844 | struct dwo_unit find_dwo_tu, *dwo_tu; | |
cb1df416 | 6845 | |
3019eac3 DE |
6846 | dwo_file = lookup_dwo_file (dwo_name, comp_dir); |
6847 | if (dwo_file == NULL) | |
6848 | return NULL; | |
cf2c3c16 | 6849 | |
3019eac3 DE |
6850 | /* Look up the DWO using its signature(dwo_id). */ |
6851 | ||
6852 | if (dwo_file->tus != NULL) | |
cf2c3c16 | 6853 | { |
3019eac3 | 6854 | struct dwo_unit find_dwo_tu, *dwo_tu; |
9a619af0 | 6855 | |
3019eac3 DE |
6856 | find_dwo_tu.signature = this_tu->signature; |
6857 | dwo_tu = htab_find (dwo_file->tus, &find_dwo_tu); | |
6858 | ||
6859 | if (dwo_tu != NULL) | |
6860 | return dwo_tu; | |
2e276125 | 6861 | } |
9cdd5dbd | 6862 | |
3019eac3 DE |
6863 | /* We didn't find it. This must mean a dwo_id mismatch. */ |
6864 | ||
6865 | complaint (&symfile_complaints, | |
6866 | _("Could not find DWO TU referenced by TU at offset 0x%x" | |
6867 | " [in module %s]"), | |
6868 | this_tu->per_cu.offset.sect_off, objfile->name); | |
6869 | return NULL; | |
5fb290d7 DJ |
6870 | } |
6871 | ||
3019eac3 DE |
6872 | /* Free all resources associated with DWO_FILE. |
6873 | Close the DWO file and munmap the sections. | |
6874 | All memory should be on the objfile obstack. */ | |
348e048f DE |
6875 | |
6876 | static void | |
3019eac3 | 6877 | free_dwo_file (struct dwo_file *dwo_file, struct objfile *objfile) |
348e048f | 6878 | { |
3019eac3 DE |
6879 | int ix; |
6880 | struct dwarf2_section_info *section; | |
348e048f | 6881 | |
3019eac3 DE |
6882 | gdb_assert (dwo_file->dwo_bfd != objfile->obfd); |
6883 | bfd_close (dwo_file->dwo_bfd); | |
348e048f | 6884 | |
3019eac3 DE |
6885 | munmap_section_buffer (&dwo_file->sections.abbrev); |
6886 | munmap_section_buffer (&dwo_file->sections.info); | |
6887 | munmap_section_buffer (&dwo_file->sections.line); | |
6888 | munmap_section_buffer (&dwo_file->sections.loc); | |
6889 | munmap_section_buffer (&dwo_file->sections.str); | |
6890 | munmap_section_buffer (&dwo_file->sections.str_offsets); | |
348e048f | 6891 | |
3019eac3 DE |
6892 | for (ix = 0; |
6893 | VEC_iterate (dwarf2_section_info_def, dwo_file->sections.types, | |
6894 | ix, section); | |
6895 | ++ix) | |
6896 | munmap_section_buffer (section); | |
348e048f | 6897 | |
3019eac3 DE |
6898 | VEC_free (dwarf2_section_info_def, dwo_file->sections.types); |
6899 | } | |
348e048f | 6900 | |
3019eac3 | 6901 | /* Wrapper for free_dwo_file for use in cleanups. */ |
348e048f | 6902 | |
3019eac3 DE |
6903 | static void |
6904 | free_dwo_file_cleanup (void *arg) | |
6905 | { | |
6906 | struct dwo_file *dwo_file = (struct dwo_file *) arg; | |
6907 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
348e048f | 6908 | |
3019eac3 DE |
6909 | free_dwo_file (dwo_file, objfile); |
6910 | } | |
348e048f | 6911 | |
3019eac3 | 6912 | /* Traversal function for free_dwo_files. */ |
2ab95328 | 6913 | |
3019eac3 DE |
6914 | static int |
6915 | free_dwo_file_from_slot (void **slot, void *info) | |
6916 | { | |
6917 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
6918 | struct objfile *objfile = (struct objfile *) info; | |
348e048f | 6919 | |
3019eac3 | 6920 | free_dwo_file (dwo_file, objfile); |
348e048f | 6921 | |
3019eac3 DE |
6922 | return 1; |
6923 | } | |
348e048f | 6924 | |
3019eac3 | 6925 | /* Free all resources associated with DWO_FILES. */ |
348e048f | 6926 | |
3019eac3 DE |
6927 | static void |
6928 | free_dwo_files (htab_t dwo_files, struct objfile *objfile) | |
6929 | { | |
6930 | htab_traverse_noresize (dwo_files, free_dwo_file_from_slot, objfile); | |
348e048f | 6931 | } |
3019eac3 DE |
6932 | \f |
6933 | /* Read in various DIEs. */ | |
348e048f | 6934 | |
d389af10 JK |
6935 | /* qsort helper for inherit_abstract_dies. */ |
6936 | ||
6937 | static int | |
6938 | unsigned_int_compar (const void *ap, const void *bp) | |
6939 | { | |
6940 | unsigned int a = *(unsigned int *) ap; | |
6941 | unsigned int b = *(unsigned int *) bp; | |
6942 | ||
6943 | return (a > b) - (b > a); | |
6944 | } | |
6945 | ||
6946 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). | |
3e43a32a MS |
6947 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
6948 | already referenced by DW_AT_abstract_origin from the children of the | |
6949 | current DIE. */ | |
d389af10 JK |
6950 | |
6951 | static void | |
6952 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
6953 | { | |
6954 | struct die_info *child_die; | |
6955 | unsigned die_children_count; | |
6956 | /* CU offsets which were referenced by children of the current DIE. */ | |
b64f50a1 JK |
6957 | sect_offset *offsets; |
6958 | sect_offset *offsets_end, *offsetp; | |
d389af10 JK |
6959 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
6960 | struct die_info *origin_die; | |
6961 | /* Iterator of the ORIGIN_DIE children. */ | |
6962 | struct die_info *origin_child_die; | |
6963 | struct cleanup *cleanups; | |
6964 | struct attribute *attr; | |
cd02d79d PA |
6965 | struct dwarf2_cu *origin_cu; |
6966 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
6967 | |
6968 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
6969 | if (!attr) | |
6970 | return; | |
6971 | ||
cd02d79d PA |
6972 | /* Note that following die references may follow to a die in a |
6973 | different cu. */ | |
6974 | ||
6975 | origin_cu = cu; | |
6976 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
6977 | ||
6978 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
6979 | symbols in. */ | |
6980 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
6981 | origin_cu->list_in_scope = cu->list_in_scope; | |
6982 | ||
edb3359d DJ |
6983 | if (die->tag != origin_die->tag |
6984 | && !(die->tag == DW_TAG_inlined_subroutine | |
6985 | && origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
6986 | complaint (&symfile_complaints, |
6987 | _("DIE 0x%x and its abstract origin 0x%x have different tags"), | |
b64f50a1 | 6988 | die->offset.sect_off, origin_die->offset.sect_off); |
d389af10 JK |
6989 | |
6990 | child_die = die->child; | |
6991 | die_children_count = 0; | |
6992 | while (child_die && child_die->tag) | |
6993 | { | |
6994 | child_die = sibling_die (child_die); | |
6995 | die_children_count++; | |
6996 | } | |
6997 | offsets = xmalloc (sizeof (*offsets) * die_children_count); | |
6998 | cleanups = make_cleanup (xfree, offsets); | |
6999 | ||
7000 | offsets_end = offsets; | |
7001 | child_die = die->child; | |
7002 | while (child_die && child_die->tag) | |
7003 | { | |
c38f313d DJ |
7004 | /* For each CHILD_DIE, find the corresponding child of |
7005 | ORIGIN_DIE. If there is more than one layer of | |
7006 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
7007 | but GCC versions at least through 4.4 generate this (GCC PR | |
7008 | 40573). */ | |
7009 | struct die_info *child_origin_die = child_die; | |
cd02d79d | 7010 | struct dwarf2_cu *child_origin_cu = cu; |
9a619af0 | 7011 | |
c38f313d DJ |
7012 | while (1) |
7013 | { | |
cd02d79d PA |
7014 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
7015 | child_origin_cu); | |
c38f313d DJ |
7016 | if (attr == NULL) |
7017 | break; | |
cd02d79d PA |
7018 | child_origin_die = follow_die_ref (child_origin_die, attr, |
7019 | &child_origin_cu); | |
c38f313d DJ |
7020 | } |
7021 | ||
d389af10 JK |
7022 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
7023 | counterpart may exist. */ | |
c38f313d | 7024 | if (child_origin_die != child_die) |
d389af10 | 7025 | { |
edb3359d DJ |
7026 | if (child_die->tag != child_origin_die->tag |
7027 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
7028 | && child_origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
7029 | complaint (&symfile_complaints, |
7030 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
b64f50a1 JK |
7031 | "different tags"), child_die->offset.sect_off, |
7032 | child_origin_die->offset.sect_off); | |
c38f313d DJ |
7033 | if (child_origin_die->parent != origin_die) |
7034 | complaint (&symfile_complaints, | |
7035 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
b64f50a1 JK |
7036 | "different parents"), child_die->offset.sect_off, |
7037 | child_origin_die->offset.sect_off); | |
c38f313d DJ |
7038 | else |
7039 | *offsets_end++ = child_origin_die->offset; | |
d389af10 JK |
7040 | } |
7041 | child_die = sibling_die (child_die); | |
7042 | } | |
7043 | qsort (offsets, offsets_end - offsets, sizeof (*offsets), | |
7044 | unsigned_int_compar); | |
7045 | for (offsetp = offsets + 1; offsetp < offsets_end; offsetp++) | |
b64f50a1 | 7046 | if (offsetp[-1].sect_off == offsetp->sect_off) |
3e43a32a MS |
7047 | complaint (&symfile_complaints, |
7048 | _("Multiple children of DIE 0x%x refer " | |
7049 | "to DIE 0x%x as their abstract origin"), | |
b64f50a1 | 7050 | die->offset.sect_off, offsetp->sect_off); |
d389af10 JK |
7051 | |
7052 | offsetp = offsets; | |
7053 | origin_child_die = origin_die->child; | |
7054 | while (origin_child_die && origin_child_die->tag) | |
7055 | { | |
7056 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 JK |
7057 | while (offsetp < offsets_end |
7058 | && offsetp->sect_off < origin_child_die->offset.sect_off) | |
d389af10 | 7059 | offsetp++; |
b64f50a1 JK |
7060 | if (offsetp >= offsets_end |
7061 | || offsetp->sect_off > origin_child_die->offset.sect_off) | |
d389af10 JK |
7062 | { |
7063 | /* Found that ORIGIN_CHILD_DIE is really not referenced. */ | |
cd02d79d | 7064 | process_die (origin_child_die, origin_cu); |
d389af10 JK |
7065 | } |
7066 | origin_child_die = sibling_die (origin_child_die); | |
7067 | } | |
cd02d79d | 7068 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
d389af10 JK |
7069 | |
7070 | do_cleanups (cleanups); | |
7071 | } | |
7072 | ||
c906108c | 7073 | static void |
e7c27a73 | 7074 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7075 | { |
e7c27a73 | 7076 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 7077 | struct context_stack *new; |
c906108c SS |
7078 | CORE_ADDR lowpc; |
7079 | CORE_ADDR highpc; | |
7080 | struct die_info *child_die; | |
edb3359d | 7081 | struct attribute *attr, *call_line, *call_file; |
c906108c | 7082 | char *name; |
e142c38c | 7083 | CORE_ADDR baseaddr; |
801e3a5b | 7084 | struct block *block; |
edb3359d | 7085 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
34eaf542 TT |
7086 | VEC (symbolp) *template_args = NULL; |
7087 | struct template_symbol *templ_func = NULL; | |
edb3359d DJ |
7088 | |
7089 | if (inlined_func) | |
7090 | { | |
7091 | /* If we do not have call site information, we can't show the | |
7092 | caller of this inlined function. That's too confusing, so | |
7093 | only use the scope for local variables. */ | |
7094 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
7095 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
7096 | if (call_line == NULL || call_file == NULL) | |
7097 | { | |
7098 | read_lexical_block_scope (die, cu); | |
7099 | return; | |
7100 | } | |
7101 | } | |
c906108c | 7102 | |
e142c38c DJ |
7103 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
7104 | ||
94af9270 | 7105 | name = dwarf2_name (die, cu); |
c906108c | 7106 | |
e8d05480 JB |
7107 | /* Ignore functions with missing or empty names. These are actually |
7108 | illegal according to the DWARF standard. */ | |
7109 | if (name == NULL) | |
7110 | { | |
7111 | complaint (&symfile_complaints, | |
b64f50a1 JK |
7112 | _("missing name for subprogram DIE at %d"), |
7113 | die->offset.sect_off); | |
e8d05480 JB |
7114 | return; |
7115 | } | |
7116 | ||
7117 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
7118 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) | |
7119 | { | |
ae4d0c03 PM |
7120 | attr = dwarf2_attr (die, DW_AT_external, cu); |
7121 | if (!attr || !DW_UNSND (attr)) | |
7122 | complaint (&symfile_complaints, | |
3e43a32a MS |
7123 | _("cannot get low and high bounds " |
7124 | "for subprogram DIE at %d"), | |
b64f50a1 | 7125 | die->offset.sect_off); |
e8d05480 JB |
7126 | return; |
7127 | } | |
c906108c SS |
7128 | |
7129 | lowpc += baseaddr; | |
7130 | highpc += baseaddr; | |
7131 | ||
34eaf542 TT |
7132 | /* If we have any template arguments, then we must allocate a |
7133 | different sort of symbol. */ | |
7134 | for (child_die = die->child; child_die; child_die = sibling_die (child_die)) | |
7135 | { | |
7136 | if (child_die->tag == DW_TAG_template_type_param | |
7137 | || child_die->tag == DW_TAG_template_value_param) | |
7138 | { | |
7139 | templ_func = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7140 | struct template_symbol); | |
7141 | templ_func->base.is_cplus_template_function = 1; | |
7142 | break; | |
7143 | } | |
7144 | } | |
7145 | ||
c906108c | 7146 | new = push_context (0, lowpc); |
34eaf542 TT |
7147 | new->name = new_symbol_full (die, read_type_die (die, cu), cu, |
7148 | (struct symbol *) templ_func); | |
4c2df51b | 7149 | |
4cecd739 DJ |
7150 | /* If there is a location expression for DW_AT_frame_base, record |
7151 | it. */ | |
e142c38c | 7152 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 7153 | if (attr) |
c034e007 AC |
7154 | /* FIXME: cagney/2004-01-26: The DW_AT_frame_base's location |
7155 | expression is being recorded directly in the function's symbol | |
7156 | and not in a separate frame-base object. I guess this hack is | |
7157 | to avoid adding some sort of frame-base adjunct/annex to the | |
7158 | function's symbol :-(. The problem with doing this is that it | |
7159 | results in a function symbol with a location expression that | |
7160 | has nothing to do with the location of the function, ouch! The | |
7161 | relationship should be: a function's symbol has-a frame base; a | |
7162 | frame-base has-a location expression. */ | |
e7c27a73 | 7163 | dwarf2_symbol_mark_computed (attr, new->name, cu); |
4c2df51b | 7164 | |
e142c38c | 7165 | cu->list_in_scope = &local_symbols; |
c906108c | 7166 | |
639d11d3 | 7167 | if (die->child != NULL) |
c906108c | 7168 | { |
639d11d3 | 7169 | child_die = die->child; |
c906108c SS |
7170 | while (child_die && child_die->tag) |
7171 | { | |
34eaf542 TT |
7172 | if (child_die->tag == DW_TAG_template_type_param |
7173 | || child_die->tag == DW_TAG_template_value_param) | |
7174 | { | |
7175 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
7176 | ||
f1078f66 DJ |
7177 | if (arg != NULL) |
7178 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
7179 | } |
7180 | else | |
7181 | process_die (child_die, cu); | |
c906108c SS |
7182 | child_die = sibling_die (child_die); |
7183 | } | |
7184 | } | |
7185 | ||
d389af10 JK |
7186 | inherit_abstract_dies (die, cu); |
7187 | ||
4a811a97 UW |
7188 | /* If we have a DW_AT_specification, we might need to import using |
7189 | directives from the context of the specification DIE. See the | |
7190 | comment in determine_prefix. */ | |
7191 | if (cu->language == language_cplus | |
7192 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
7193 | { | |
7194 | struct dwarf2_cu *spec_cu = cu; | |
7195 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
7196 | ||
7197 | while (spec_die) | |
7198 | { | |
7199 | child_die = spec_die->child; | |
7200 | while (child_die && child_die->tag) | |
7201 | { | |
7202 | if (child_die->tag == DW_TAG_imported_module) | |
7203 | process_die (child_die, spec_cu); | |
7204 | child_die = sibling_die (child_die); | |
7205 | } | |
7206 | ||
7207 | /* In some cases, GCC generates specification DIEs that | |
7208 | themselves contain DW_AT_specification attributes. */ | |
7209 | spec_die = die_specification (spec_die, &spec_cu); | |
7210 | } | |
7211 | } | |
7212 | ||
c906108c SS |
7213 | new = pop_context (); |
7214 | /* Make a block for the local symbols within. */ | |
801e3a5b JB |
7215 | block = finish_block (new->name, &local_symbols, new->old_blocks, |
7216 | lowpc, highpc, objfile); | |
7217 | ||
df8a16a1 | 7218 | /* For C++, set the block's scope. */ |
f55ee35c | 7219 | if (cu->language == language_cplus || cu->language == language_fortran) |
df8a16a1 | 7220 | cp_set_block_scope (new->name, block, &objfile->objfile_obstack, |
0114d602 | 7221 | determine_prefix (die, cu), |
df8a16a1 DJ |
7222 | processing_has_namespace_info); |
7223 | ||
801e3a5b JB |
7224 | /* If we have address ranges, record them. */ |
7225 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 7226 | |
34eaf542 TT |
7227 | /* Attach template arguments to function. */ |
7228 | if (! VEC_empty (symbolp, template_args)) | |
7229 | { | |
7230 | gdb_assert (templ_func != NULL); | |
7231 | ||
7232 | templ_func->n_template_arguments = VEC_length (symbolp, template_args); | |
7233 | templ_func->template_arguments | |
7234 | = obstack_alloc (&objfile->objfile_obstack, | |
7235 | (templ_func->n_template_arguments | |
7236 | * sizeof (struct symbol *))); | |
7237 | memcpy (templ_func->template_arguments, | |
7238 | VEC_address (symbolp, template_args), | |
7239 | (templ_func->n_template_arguments * sizeof (struct symbol *))); | |
7240 | VEC_free (symbolp, template_args); | |
7241 | } | |
7242 | ||
208d8187 JB |
7243 | /* In C++, we can have functions nested inside functions (e.g., when |
7244 | a function declares a class that has methods). This means that | |
7245 | when we finish processing a function scope, we may need to go | |
7246 | back to building a containing block's symbol lists. */ | |
7247 | local_symbols = new->locals; | |
7248 | param_symbols = new->params; | |
27aa8d6a | 7249 | using_directives = new->using_directives; |
208d8187 | 7250 | |
921e78cf JB |
7251 | /* If we've finished processing a top-level function, subsequent |
7252 | symbols go in the file symbol list. */ | |
7253 | if (outermost_context_p ()) | |
e142c38c | 7254 | cu->list_in_scope = &file_symbols; |
c906108c SS |
7255 | } |
7256 | ||
7257 | /* Process all the DIES contained within a lexical block scope. Start | |
7258 | a new scope, process the dies, and then close the scope. */ | |
7259 | ||
7260 | static void | |
e7c27a73 | 7261 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7262 | { |
e7c27a73 | 7263 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 7264 | struct context_stack *new; |
c906108c SS |
7265 | CORE_ADDR lowpc, highpc; |
7266 | struct die_info *child_die; | |
e142c38c DJ |
7267 | CORE_ADDR baseaddr; |
7268 | ||
7269 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
7270 | |
7271 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
7272 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
7273 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 7274 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 7275 | describe ranges. */ |
d85a05f0 | 7276 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
c906108c SS |
7277 | return; |
7278 | lowpc += baseaddr; | |
7279 | highpc += baseaddr; | |
7280 | ||
7281 | push_context (0, lowpc); | |
639d11d3 | 7282 | if (die->child != NULL) |
c906108c | 7283 | { |
639d11d3 | 7284 | child_die = die->child; |
c906108c SS |
7285 | while (child_die && child_die->tag) |
7286 | { | |
e7c27a73 | 7287 | process_die (child_die, cu); |
c906108c SS |
7288 | child_die = sibling_die (child_die); |
7289 | } | |
7290 | } | |
7291 | new = pop_context (); | |
7292 | ||
8540c487 | 7293 | if (local_symbols != NULL || using_directives != NULL) |
c906108c | 7294 | { |
801e3a5b JB |
7295 | struct block *block |
7296 | = finish_block (0, &local_symbols, new->old_blocks, new->start_addr, | |
7297 | highpc, objfile); | |
7298 | ||
7299 | /* Note that recording ranges after traversing children, as we | |
7300 | do here, means that recording a parent's ranges entails | |
7301 | walking across all its children's ranges as they appear in | |
7302 | the address map, which is quadratic behavior. | |
7303 | ||
7304 | It would be nicer to record the parent's ranges before | |
7305 | traversing its children, simply overriding whatever you find | |
7306 | there. But since we don't even decide whether to create a | |
7307 | block until after we've traversed its children, that's hard | |
7308 | to do. */ | |
7309 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c SS |
7310 | } |
7311 | local_symbols = new->locals; | |
27aa8d6a | 7312 | using_directives = new->using_directives; |
c906108c SS |
7313 | } |
7314 | ||
96408a79 SA |
7315 | /* Read in DW_TAG_GNU_call_site and insert it to CU->call_site_htab. */ |
7316 | ||
7317 | static void | |
7318 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
7319 | { | |
7320 | struct objfile *objfile = cu->objfile; | |
7321 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
7322 | CORE_ADDR pc, baseaddr; | |
7323 | struct attribute *attr; | |
7324 | struct call_site *call_site, call_site_local; | |
7325 | void **slot; | |
7326 | int nparams; | |
7327 | struct die_info *child_die; | |
7328 | ||
7329 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
7330 | ||
7331 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
7332 | if (!attr) | |
7333 | { | |
7334 | complaint (&symfile_complaints, | |
7335 | _("missing DW_AT_low_pc for DW_TAG_GNU_call_site " | |
7336 | "DIE 0x%x [in module %s]"), | |
b64f50a1 | 7337 | die->offset.sect_off, objfile->name); |
96408a79 SA |
7338 | return; |
7339 | } | |
7340 | pc = DW_ADDR (attr) + baseaddr; | |
7341 | ||
7342 | if (cu->call_site_htab == NULL) | |
7343 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
7344 | NULL, &objfile->objfile_obstack, | |
7345 | hashtab_obstack_allocate, NULL); | |
7346 | call_site_local.pc = pc; | |
7347 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
7348 | if (*slot != NULL) | |
7349 | { | |
7350 | complaint (&symfile_complaints, | |
7351 | _("Duplicate PC %s for DW_TAG_GNU_call_site " | |
7352 | "DIE 0x%x [in module %s]"), | |
b64f50a1 | 7353 | paddress (gdbarch, pc), die->offset.sect_off, objfile->name); |
96408a79 SA |
7354 | return; |
7355 | } | |
7356 | ||
7357 | /* Count parameters at the caller. */ | |
7358 | ||
7359 | nparams = 0; | |
7360 | for (child_die = die->child; child_die && child_die->tag; | |
7361 | child_die = sibling_die (child_die)) | |
7362 | { | |
7363 | if (child_die->tag != DW_TAG_GNU_call_site_parameter) | |
7364 | { | |
7365 | complaint (&symfile_complaints, | |
7366 | _("Tag %d is not DW_TAG_GNU_call_site_parameter in " | |
7367 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
b64f50a1 | 7368 | child_die->tag, child_die->offset.sect_off, objfile->name); |
96408a79 SA |
7369 | continue; |
7370 | } | |
7371 | ||
7372 | nparams++; | |
7373 | } | |
7374 | ||
7375 | call_site = obstack_alloc (&objfile->objfile_obstack, | |
7376 | (sizeof (*call_site) | |
7377 | + (sizeof (*call_site->parameter) | |
7378 | * (nparams - 1)))); | |
7379 | *slot = call_site; | |
7380 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
7381 | call_site->pc = pc; | |
7382 | ||
7383 | if (dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
7384 | { | |
7385 | struct die_info *func_die; | |
7386 | ||
7387 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
7388 | for (func_die = die->parent; | |
7389 | func_die && func_die->tag != DW_TAG_subprogram | |
7390 | && func_die->tag != DW_TAG_subroutine_type; | |
7391 | func_die = func_die->parent); | |
7392 | ||
7393 | /* DW_AT_GNU_all_call_sites is a superset | |
7394 | of DW_AT_GNU_all_tail_call_sites. */ | |
7395 | if (func_die | |
7396 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) | |
7397 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) | |
7398 | { | |
7399 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
7400 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
7401 | both the initial caller containing the real return address PC and | |
7402 | the final callee containing the current PC of a chain of tail | |
7403 | calls do not need to have the tail call list complete. But any | |
7404 | function candidate for a virtual tail call frame searched via | |
7405 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
7406 | determined unambiguously. */ | |
7407 | } | |
7408 | else | |
7409 | { | |
7410 | struct type *func_type = NULL; | |
7411 | ||
7412 | if (func_die) | |
7413 | func_type = get_die_type (func_die, cu); | |
7414 | if (func_type != NULL) | |
7415 | { | |
7416 | gdb_assert (TYPE_CODE (func_type) == TYPE_CODE_FUNC); | |
7417 | ||
7418 | /* Enlist this call site to the function. */ | |
7419 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
7420 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
7421 | } | |
7422 | else | |
7423 | complaint (&symfile_complaints, | |
7424 | _("Cannot find function owning DW_TAG_GNU_call_site " | |
7425 | "DIE 0x%x [in module %s]"), | |
b64f50a1 | 7426 | die->offset.sect_off, objfile->name); |
96408a79 SA |
7427 | } |
7428 | } | |
7429 | ||
7430 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
7431 | if (attr == NULL) | |
7432 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
7433 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); | |
7434 | if (!attr || (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0)) | |
7435 | /* Keep NULL DWARF_BLOCK. */; | |
7436 | else if (attr_form_is_block (attr)) | |
7437 | { | |
7438 | struct dwarf2_locexpr_baton *dlbaton; | |
7439 | ||
7440 | dlbaton = obstack_alloc (&objfile->objfile_obstack, sizeof (*dlbaton)); | |
7441 | dlbaton->data = DW_BLOCK (attr)->data; | |
7442 | dlbaton->size = DW_BLOCK (attr)->size; | |
7443 | dlbaton->per_cu = cu->per_cu; | |
7444 | ||
7445 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
7446 | } | |
7447 | else if (is_ref_attr (attr)) | |
7448 | { | |
96408a79 SA |
7449 | struct dwarf2_cu *target_cu = cu; |
7450 | struct die_info *target_die; | |
7451 | ||
7452 | target_die = follow_die_ref_or_sig (die, attr, &target_cu); | |
7453 | gdb_assert (target_cu->objfile == objfile); | |
7454 | if (die_is_declaration (target_die, target_cu)) | |
7455 | { | |
7456 | const char *target_physname; | |
7457 | ||
7458 | target_physname = dwarf2_physname (NULL, target_die, target_cu); | |
7459 | if (target_physname == NULL) | |
7460 | complaint (&symfile_complaints, | |
7461 | _("DW_AT_GNU_call_site_target target DIE has invalid " | |
7462 | "physname, for referencing DIE 0x%x [in module %s]"), | |
b64f50a1 | 7463 | die->offset.sect_off, objfile->name); |
96408a79 SA |
7464 | else |
7465 | SET_FIELD_PHYSNAME (call_site->target, (char *) target_physname); | |
7466 | } | |
7467 | else | |
7468 | { | |
7469 | CORE_ADDR lowpc; | |
7470 | ||
7471 | /* DW_AT_entry_pc should be preferred. */ | |
7472 | if (!dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL)) | |
7473 | complaint (&symfile_complaints, | |
7474 | _("DW_AT_GNU_call_site_target target DIE has invalid " | |
7475 | "low pc, for referencing DIE 0x%x [in module %s]"), | |
b64f50a1 | 7476 | die->offset.sect_off, objfile->name); |
96408a79 SA |
7477 | else |
7478 | SET_FIELD_PHYSADDR (call_site->target, lowpc + baseaddr); | |
7479 | } | |
7480 | } | |
7481 | else | |
7482 | complaint (&symfile_complaints, | |
7483 | _("DW_TAG_GNU_call_site DW_AT_GNU_call_site_target is neither " | |
7484 | "block nor reference, for DIE 0x%x [in module %s]"), | |
b64f50a1 | 7485 | die->offset.sect_off, objfile->name); |
96408a79 SA |
7486 | |
7487 | call_site->per_cu = cu->per_cu; | |
7488 | ||
7489 | for (child_die = die->child; | |
7490 | child_die && child_die->tag; | |
7491 | child_die = sibling_die (child_die)) | |
7492 | { | |
7493 | struct dwarf2_locexpr_baton *dlbaton; | |
7494 | struct call_site_parameter *parameter; | |
7495 | ||
7496 | if (child_die->tag != DW_TAG_GNU_call_site_parameter) | |
7497 | { | |
7498 | /* Already printed the complaint above. */ | |
7499 | continue; | |
7500 | } | |
7501 | ||
7502 | gdb_assert (call_site->parameter_count < nparams); | |
7503 | parameter = &call_site->parameter[call_site->parameter_count]; | |
7504 | ||
7505 | /* DW_AT_location specifies the register number. Value of the data | |
7506 | assumed for the register is contained in DW_AT_GNU_call_site_value. */ | |
7507 | ||
7508 | attr = dwarf2_attr (child_die, DW_AT_location, cu); | |
7509 | if (!attr || !attr_form_is_block (attr)) | |
7510 | { | |
7511 | complaint (&symfile_complaints, | |
7512 | _("No DW_FORM_block* DW_AT_location for " | |
7513 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
b64f50a1 | 7514 | child_die->offset.sect_off, objfile->name); |
96408a79 SA |
7515 | continue; |
7516 | } | |
7517 | parameter->dwarf_reg = dwarf_block_to_dwarf_reg (DW_BLOCK (attr)->data, | |
7518 | &DW_BLOCK (attr)->data[DW_BLOCK (attr)->size]); | |
7519 | if (parameter->dwarf_reg == -1 | |
7520 | && !dwarf_block_to_sp_offset (gdbarch, DW_BLOCK (attr)->data, | |
7521 | &DW_BLOCK (attr)->data[DW_BLOCK (attr)->size], | |
7522 | ¶meter->fb_offset)) | |
7523 | { | |
7524 | complaint (&symfile_complaints, | |
7525 | _("Only single DW_OP_reg or DW_OP_fbreg is supported " | |
7526 | "for DW_FORM_block* DW_AT_location for " | |
7527 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
b64f50a1 | 7528 | child_die->offset.sect_off, objfile->name); |
96408a79 SA |
7529 | continue; |
7530 | } | |
7531 | ||
7532 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
7533 | if (!attr_form_is_block (attr)) | |
7534 | { | |
7535 | complaint (&symfile_complaints, | |
7536 | _("No DW_FORM_block* DW_AT_GNU_call_site_value for " | |
7537 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
b64f50a1 | 7538 | child_die->offset.sect_off, objfile->name); |
96408a79 SA |
7539 | continue; |
7540 | } | |
7541 | parameter->value = DW_BLOCK (attr)->data; | |
7542 | parameter->value_size = DW_BLOCK (attr)->size; | |
7543 | ||
7544 | /* Parameters are not pre-cleared by memset above. */ | |
7545 | parameter->data_value = NULL; | |
7546 | parameter->data_value_size = 0; | |
7547 | call_site->parameter_count++; | |
7548 | ||
7549 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
7550 | if (attr) | |
7551 | { | |
7552 | if (!attr_form_is_block (attr)) | |
7553 | complaint (&symfile_complaints, | |
7554 | _("No DW_FORM_block* DW_AT_GNU_call_site_data_value for " | |
7555 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
b64f50a1 | 7556 | child_die->offset.sect_off, objfile->name); |
96408a79 SA |
7557 | else |
7558 | { | |
7559 | parameter->data_value = DW_BLOCK (attr)->data; | |
7560 | parameter->data_value_size = DW_BLOCK (attr)->size; | |
7561 | } | |
7562 | } | |
7563 | } | |
7564 | } | |
7565 | ||
43039443 | 7566 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. |
ff013f42 JK |
7567 | Return 1 if the attributes are present and valid, otherwise, return 0. |
7568 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
43039443 JK |
7569 | |
7570 | static int | |
7571 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
ff013f42 JK |
7572 | CORE_ADDR *high_return, struct dwarf2_cu *cu, |
7573 | struct partial_symtab *ranges_pst) | |
43039443 JK |
7574 | { |
7575 | struct objfile *objfile = cu->objfile; | |
7576 | struct comp_unit_head *cu_header = &cu->header; | |
7577 | bfd *obfd = objfile->obfd; | |
7578 | unsigned int addr_size = cu_header->addr_size; | |
7579 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
7580 | /* Base address selection entry. */ | |
7581 | CORE_ADDR base; | |
7582 | int found_base; | |
7583 | unsigned int dummy; | |
7584 | gdb_byte *buffer; | |
7585 | CORE_ADDR marker; | |
7586 | int low_set; | |
7587 | CORE_ADDR low = 0; | |
7588 | CORE_ADDR high = 0; | |
ff013f42 | 7589 | CORE_ADDR baseaddr; |
43039443 | 7590 | |
d00adf39 DE |
7591 | found_base = cu->base_known; |
7592 | base = cu->base_address; | |
43039443 | 7593 | |
be391dca | 7594 | dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges); |
dce234bc | 7595 | if (offset >= dwarf2_per_objfile->ranges.size) |
43039443 JK |
7596 | { |
7597 | complaint (&symfile_complaints, | |
7598 | _("Offset %d out of bounds for DW_AT_ranges attribute"), | |
7599 | offset); | |
7600 | return 0; | |
7601 | } | |
dce234bc | 7602 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
43039443 JK |
7603 | |
7604 | /* Read in the largest possible address. */ | |
7605 | marker = read_address (obfd, buffer, cu, &dummy); | |
7606 | if ((marker & mask) == mask) | |
7607 | { | |
7608 | /* If we found the largest possible address, then | |
7609 | read the base address. */ | |
7610 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
7611 | buffer += 2 * addr_size; | |
7612 | offset += 2 * addr_size; | |
7613 | found_base = 1; | |
7614 | } | |
7615 | ||
7616 | low_set = 0; | |
7617 | ||
e7030f15 | 7618 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
ff013f42 | 7619 | |
43039443 JK |
7620 | while (1) |
7621 | { | |
7622 | CORE_ADDR range_beginning, range_end; | |
7623 | ||
7624 | range_beginning = read_address (obfd, buffer, cu, &dummy); | |
7625 | buffer += addr_size; | |
7626 | range_end = read_address (obfd, buffer, cu, &dummy); | |
7627 | buffer += addr_size; | |
7628 | offset += 2 * addr_size; | |
7629 | ||
7630 | /* An end of list marker is a pair of zero addresses. */ | |
7631 | if (range_beginning == 0 && range_end == 0) | |
7632 | /* Found the end of list entry. */ | |
7633 | break; | |
7634 | ||
7635 | /* Each base address selection entry is a pair of 2 values. | |
7636 | The first is the largest possible address, the second is | |
7637 | the base address. Check for a base address here. */ | |
7638 | if ((range_beginning & mask) == mask) | |
7639 | { | |
7640 | /* If we found the largest possible address, then | |
7641 | read the base address. */ | |
7642 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
7643 | found_base = 1; | |
7644 | continue; | |
7645 | } | |
7646 | ||
7647 | if (!found_base) | |
7648 | { | |
7649 | /* We have no valid base address for the ranges | |
7650 | data. */ | |
7651 | complaint (&symfile_complaints, | |
7652 | _("Invalid .debug_ranges data (no base address)")); | |
7653 | return 0; | |
7654 | } | |
7655 | ||
9277c30c UW |
7656 | if (range_beginning > range_end) |
7657 | { | |
7658 | /* Inverted range entries are invalid. */ | |
7659 | complaint (&symfile_complaints, | |
7660 | _("Invalid .debug_ranges data (inverted range)")); | |
7661 | return 0; | |
7662 | } | |
7663 | ||
7664 | /* Empty range entries have no effect. */ | |
7665 | if (range_beginning == range_end) | |
7666 | continue; | |
7667 | ||
43039443 JK |
7668 | range_beginning += base; |
7669 | range_end += base; | |
7670 | ||
9277c30c | 7671 | if (ranges_pst != NULL) |
ff013f42 | 7672 | addrmap_set_empty (objfile->psymtabs_addrmap, |
3e43a32a MS |
7673 | range_beginning + baseaddr, |
7674 | range_end - 1 + baseaddr, | |
ff013f42 JK |
7675 | ranges_pst); |
7676 | ||
43039443 JK |
7677 | /* FIXME: This is recording everything as a low-high |
7678 | segment of consecutive addresses. We should have a | |
7679 | data structure for discontiguous block ranges | |
7680 | instead. */ | |
7681 | if (! low_set) | |
7682 | { | |
7683 | low = range_beginning; | |
7684 | high = range_end; | |
7685 | low_set = 1; | |
7686 | } | |
7687 | else | |
7688 | { | |
7689 | if (range_beginning < low) | |
7690 | low = range_beginning; | |
7691 | if (range_end > high) | |
7692 | high = range_end; | |
7693 | } | |
7694 | } | |
7695 | ||
7696 | if (! low_set) | |
7697 | /* If the first entry is an end-of-list marker, the range | |
7698 | describes an empty scope, i.e. no instructions. */ | |
7699 | return 0; | |
7700 | ||
7701 | if (low_return) | |
7702 | *low_return = low; | |
7703 | if (high_return) | |
7704 | *high_return = high; | |
7705 | return 1; | |
7706 | } | |
7707 | ||
af34e669 DJ |
7708 | /* Get low and high pc attributes from a die. Return 1 if the attributes |
7709 | are present and valid, otherwise, return 0. Return -1 if the range is | |
7710 | discontinuous, i.e. derived from DW_AT_ranges information. */ | |
380bca97 | 7711 | |
c906108c | 7712 | static int |
af34e669 | 7713 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 DJ |
7714 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
7715 | struct partial_symtab *pst) | |
c906108c SS |
7716 | { |
7717 | struct attribute *attr; | |
91da1414 | 7718 | struct attribute *attr_high; |
af34e669 DJ |
7719 | CORE_ADDR low = 0; |
7720 | CORE_ADDR high = 0; | |
7721 | int ret = 0; | |
c906108c | 7722 | |
91da1414 MW |
7723 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
7724 | if (attr_high) | |
af34e669 | 7725 | { |
e142c38c | 7726 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 | 7727 | if (attr) |
91da1414 MW |
7728 | { |
7729 | low = DW_ADDR (attr); | |
3019eac3 DE |
7730 | if (attr_high->form == DW_FORM_addr |
7731 | || attr_high->form == DW_FORM_GNU_addr_index) | |
91da1414 MW |
7732 | high = DW_ADDR (attr_high); |
7733 | else | |
7734 | high = low + DW_UNSND (attr_high); | |
7735 | } | |
af34e669 DJ |
7736 | else |
7737 | /* Found high w/o low attribute. */ | |
7738 | return 0; | |
7739 | ||
7740 | /* Found consecutive range of addresses. */ | |
7741 | ret = 1; | |
7742 | } | |
c906108c | 7743 | else |
af34e669 | 7744 | { |
e142c38c | 7745 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
7746 | if (attr != NULL) |
7747 | { | |
af34e669 | 7748 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 7749 | .debug_ranges section. */ |
d85a05f0 | 7750 | if (!dwarf2_ranges_read (DW_UNSND (attr), &low, &high, cu, pst)) |
af34e669 | 7751 | return 0; |
43039443 | 7752 | /* Found discontinuous range of addresses. */ |
af34e669 DJ |
7753 | ret = -1; |
7754 | } | |
7755 | } | |
c906108c | 7756 | |
9373cf26 JK |
7757 | /* read_partial_die has also the strict LOW < HIGH requirement. */ |
7758 | if (high <= low) | |
c906108c SS |
7759 | return 0; |
7760 | ||
7761 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
7762 | eliminate duplicate copies of functions and vtables and such. | |
7763 | The linker will arbitrarily choose one and discard the others. | |
7764 | The AT_*_pc values for such functions refer to local labels in | |
7765 | these sections. If the section from that file was discarded, the | |
7766 | labels are not in the output, so the relocs get a value of 0. | |
7767 | If this is a discarded function, mark the pc bounds as invalid, | |
7768 | so that GDB will ignore it. */ | |
72dca2f5 | 7769 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
c906108c SS |
7770 | return 0; |
7771 | ||
7772 | *lowpc = low; | |
96408a79 SA |
7773 | if (highpc) |
7774 | *highpc = high; | |
af34e669 | 7775 | return ret; |
c906108c SS |
7776 | } |
7777 | ||
b084d499 JB |
7778 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
7779 | its low and high PC addresses. Do nothing if these addresses could not | |
7780 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
7781 | and HIGHPC to the high address if greater than HIGHPC. */ | |
7782 | ||
7783 | static void | |
7784 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
7785 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
7786 | struct dwarf2_cu *cu) | |
7787 | { | |
7788 | CORE_ADDR low, high; | |
7789 | struct die_info *child = die->child; | |
7790 | ||
d85a05f0 | 7791 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL)) |
b084d499 JB |
7792 | { |
7793 | *lowpc = min (*lowpc, low); | |
7794 | *highpc = max (*highpc, high); | |
7795 | } | |
7796 | ||
7797 | /* If the language does not allow nested subprograms (either inside | |
7798 | subprograms or lexical blocks), we're done. */ | |
7799 | if (cu->language != language_ada) | |
7800 | return; | |
6e70227d | 7801 | |
b084d499 JB |
7802 | /* Check all the children of the given DIE. If it contains nested |
7803 | subprograms, then check their pc bounds. Likewise, we need to | |
7804 | check lexical blocks as well, as they may also contain subprogram | |
7805 | definitions. */ | |
7806 | while (child && child->tag) | |
7807 | { | |
7808 | if (child->tag == DW_TAG_subprogram | |
7809 | || child->tag == DW_TAG_lexical_block) | |
7810 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
7811 | child = sibling_die (child); | |
7812 | } | |
7813 | } | |
7814 | ||
fae299cd DC |
7815 | /* Get the low and high pc's represented by the scope DIE, and store |
7816 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
7817 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
7818 | ||
7819 | static void | |
7820 | get_scope_pc_bounds (struct die_info *die, | |
7821 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
7822 | struct dwarf2_cu *cu) | |
7823 | { | |
7824 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
7825 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
7826 | CORE_ADDR current_low, current_high; | |
7827 | ||
d85a05f0 | 7828 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL)) |
fae299cd DC |
7829 | { |
7830 | best_low = current_low; | |
7831 | best_high = current_high; | |
7832 | } | |
7833 | else | |
7834 | { | |
7835 | struct die_info *child = die->child; | |
7836 | ||
7837 | while (child && child->tag) | |
7838 | { | |
7839 | switch (child->tag) { | |
7840 | case DW_TAG_subprogram: | |
b084d499 | 7841 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
7842 | break; |
7843 | case DW_TAG_namespace: | |
f55ee35c | 7844 | case DW_TAG_module: |
fae299cd DC |
7845 | /* FIXME: carlton/2004-01-16: Should we do this for |
7846 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
7847 | that current GCC's always emit the DIEs corresponding | |
7848 | to definitions of methods of classes as children of a | |
7849 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
7850 | the DIEs giving the declarations, which could be | |
7851 | anywhere). But I don't see any reason why the | |
7852 | standards says that they have to be there. */ | |
7853 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
7854 | ||
7855 | if (current_low != ((CORE_ADDR) -1)) | |
7856 | { | |
7857 | best_low = min (best_low, current_low); | |
7858 | best_high = max (best_high, current_high); | |
7859 | } | |
7860 | break; | |
7861 | default: | |
0963b4bd | 7862 | /* Ignore. */ |
fae299cd DC |
7863 | break; |
7864 | } | |
7865 | ||
7866 | child = sibling_die (child); | |
7867 | } | |
7868 | } | |
7869 | ||
7870 | *lowpc = best_low; | |
7871 | *highpc = best_high; | |
7872 | } | |
7873 | ||
801e3a5b JB |
7874 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
7875 | in DIE. */ | |
380bca97 | 7876 | |
801e3a5b JB |
7877 | static void |
7878 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
7879 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
7880 | { | |
bb5ed363 | 7881 | struct objfile *objfile = cu->objfile; |
801e3a5b | 7882 | struct attribute *attr; |
91da1414 | 7883 | struct attribute *attr_high; |
801e3a5b | 7884 | |
91da1414 MW |
7885 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
7886 | if (attr_high) | |
801e3a5b | 7887 | { |
801e3a5b JB |
7888 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
7889 | if (attr) | |
7890 | { | |
7891 | CORE_ADDR low = DW_ADDR (attr); | |
91da1414 | 7892 | CORE_ADDR high; |
3019eac3 DE |
7893 | if (attr_high->form == DW_FORM_addr |
7894 | || attr_high->form == DW_FORM_GNU_addr_index) | |
91da1414 MW |
7895 | high = DW_ADDR (attr_high); |
7896 | else | |
7897 | high = low + DW_UNSND (attr_high); | |
9a619af0 | 7898 | |
801e3a5b JB |
7899 | record_block_range (block, baseaddr + low, baseaddr + high - 1); |
7900 | } | |
7901 | } | |
7902 | ||
7903 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
7904 | if (attr) | |
7905 | { | |
bb5ed363 | 7906 | bfd *obfd = objfile->obfd; |
801e3a5b JB |
7907 | |
7908 | /* The value of the DW_AT_ranges attribute is the offset of the | |
7909 | address range list in the .debug_ranges section. */ | |
7910 | unsigned long offset = DW_UNSND (attr); | |
dce234bc | 7911 | gdb_byte *buffer = dwarf2_per_objfile->ranges.buffer + offset; |
801e3a5b JB |
7912 | |
7913 | /* For some target architectures, but not others, the | |
7914 | read_address function sign-extends the addresses it returns. | |
7915 | To recognize base address selection entries, we need a | |
7916 | mask. */ | |
7917 | unsigned int addr_size = cu->header.addr_size; | |
7918 | CORE_ADDR base_select_mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
7919 | ||
7920 | /* The base address, to which the next pair is relative. Note | |
7921 | that this 'base' is a DWARF concept: most entries in a range | |
7922 | list are relative, to reduce the number of relocs against the | |
7923 | debugging information. This is separate from this function's | |
7924 | 'baseaddr' argument, which GDB uses to relocate debugging | |
7925 | information from a shared library based on the address at | |
7926 | which the library was loaded. */ | |
d00adf39 DE |
7927 | CORE_ADDR base = cu->base_address; |
7928 | int base_known = cu->base_known; | |
801e3a5b | 7929 | |
be391dca | 7930 | gdb_assert (dwarf2_per_objfile->ranges.readin); |
dce234bc | 7931 | if (offset >= dwarf2_per_objfile->ranges.size) |
801e3a5b JB |
7932 | { |
7933 | complaint (&symfile_complaints, | |
7934 | _("Offset %lu out of bounds for DW_AT_ranges attribute"), | |
7935 | offset); | |
7936 | return; | |
7937 | } | |
7938 | ||
7939 | for (;;) | |
7940 | { | |
7941 | unsigned int bytes_read; | |
7942 | CORE_ADDR start, end; | |
7943 | ||
7944 | start = read_address (obfd, buffer, cu, &bytes_read); | |
7945 | buffer += bytes_read; | |
7946 | end = read_address (obfd, buffer, cu, &bytes_read); | |
7947 | buffer += bytes_read; | |
7948 | ||
7949 | /* Did we find the end of the range list? */ | |
7950 | if (start == 0 && end == 0) | |
7951 | break; | |
7952 | ||
7953 | /* Did we find a base address selection entry? */ | |
7954 | else if ((start & base_select_mask) == base_select_mask) | |
7955 | { | |
7956 | base = end; | |
7957 | base_known = 1; | |
7958 | } | |
7959 | ||
7960 | /* We found an ordinary address range. */ | |
7961 | else | |
7962 | { | |
7963 | if (!base_known) | |
7964 | { | |
7965 | complaint (&symfile_complaints, | |
3e43a32a MS |
7966 | _("Invalid .debug_ranges data " |
7967 | "(no base address)")); | |
801e3a5b JB |
7968 | return; |
7969 | } | |
7970 | ||
9277c30c UW |
7971 | if (start > end) |
7972 | { | |
7973 | /* Inverted range entries are invalid. */ | |
7974 | complaint (&symfile_complaints, | |
7975 | _("Invalid .debug_ranges data " | |
7976 | "(inverted range)")); | |
7977 | return; | |
7978 | } | |
7979 | ||
7980 | /* Empty range entries have no effect. */ | |
7981 | if (start == end) | |
7982 | continue; | |
7983 | ||
6e70227d DE |
7984 | record_block_range (block, |
7985 | baseaddr + base + start, | |
801e3a5b JB |
7986 | baseaddr + base + end - 1); |
7987 | } | |
7988 | } | |
7989 | } | |
7990 | } | |
7991 | ||
60d5a603 JK |
7992 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
7993 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
7994 | during 4.6.0 experimental. */ | |
7995 | ||
7996 | static int | |
7997 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) | |
7998 | { | |
7999 | const char *cs; | |
8000 | int major, minor, release; | |
ba919b58 | 8001 | int result = 0; |
60d5a603 JK |
8002 | |
8003 | if (cu->producer == NULL) | |
8004 | { | |
8005 | /* For unknown compilers expect their behavior is DWARF version | |
8006 | compliant. | |
8007 | ||
8008 | GCC started to support .debug_types sections by -gdwarf-4 since | |
8009 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
8010 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
8011 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
8012 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
8013 | ||
8014 | return 0; | |
8015 | } | |
8016 | ||
ba919b58 TT |
8017 | if (cu->checked_producer) |
8018 | return cu->producer_is_gxx_lt_4_6; | |
8019 | ||
60d5a603 JK |
8020 | /* Skip any identifier after "GNU " - such as "C++" or "Java". */ |
8021 | ||
8022 | if (strncmp (cu->producer, "GNU ", strlen ("GNU ")) != 0) | |
8023 | { | |
8024 | /* For non-GCC compilers expect their behavior is DWARF version | |
8025 | compliant. */ | |
60d5a603 | 8026 | } |
ba919b58 | 8027 | else |
60d5a603 | 8028 | { |
ba919b58 TT |
8029 | cs = &cu->producer[strlen ("GNU ")]; |
8030 | while (*cs && !isdigit (*cs)) | |
8031 | cs++; | |
8032 | if (sscanf (cs, "%d.%d.%d", &major, &minor, &release) != 3) | |
8033 | { | |
8034 | /* Not recognized as GCC. */ | |
8035 | } | |
8036 | else | |
8037 | result = major < 4 || (major == 4 && minor < 6); | |
60d5a603 JK |
8038 | } |
8039 | ||
ba919b58 TT |
8040 | cu->checked_producer = 1; |
8041 | cu->producer_is_gxx_lt_4_6 = result; | |
8042 | ||
8043 | return result; | |
60d5a603 JK |
8044 | } |
8045 | ||
8046 | /* Return the default accessibility type if it is not overriden by | |
8047 | DW_AT_accessibility. */ | |
8048 | ||
8049 | static enum dwarf_access_attribute | |
8050 | dwarf2_default_access_attribute (struct die_info *die, struct dwarf2_cu *cu) | |
8051 | { | |
8052 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) | |
8053 | { | |
8054 | /* The default DWARF 2 accessibility for members is public, the default | |
8055 | accessibility for inheritance is private. */ | |
8056 | ||
8057 | if (die->tag != DW_TAG_inheritance) | |
8058 | return DW_ACCESS_public; | |
8059 | else | |
8060 | return DW_ACCESS_private; | |
8061 | } | |
8062 | else | |
8063 | { | |
8064 | /* DWARF 3+ defines the default accessibility a different way. The same | |
8065 | rules apply now for DW_TAG_inheritance as for the members and it only | |
8066 | depends on the container kind. */ | |
8067 | ||
8068 | if (die->parent->tag == DW_TAG_class_type) | |
8069 | return DW_ACCESS_private; | |
8070 | else | |
8071 | return DW_ACCESS_public; | |
8072 | } | |
8073 | } | |
8074 | ||
74ac6d43 TT |
8075 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
8076 | offset. If the attribute was not found return 0, otherwise return | |
8077 | 1. If it was found but could not properly be handled, set *OFFSET | |
8078 | to 0. */ | |
8079 | ||
8080 | static int | |
8081 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
8082 | LONGEST *offset) | |
8083 | { | |
8084 | struct attribute *attr; | |
8085 | ||
8086 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
8087 | if (attr != NULL) | |
8088 | { | |
8089 | *offset = 0; | |
8090 | ||
8091 | /* Note that we do not check for a section offset first here. | |
8092 | This is because DW_AT_data_member_location is new in DWARF 4, | |
8093 | so if we see it, we can assume that a constant form is really | |
8094 | a constant and not a section offset. */ | |
8095 | if (attr_form_is_constant (attr)) | |
8096 | *offset = dwarf2_get_attr_constant_value (attr, 0); | |
8097 | else if (attr_form_is_section_offset (attr)) | |
8098 | dwarf2_complex_location_expr_complaint (); | |
8099 | else if (attr_form_is_block (attr)) | |
8100 | *offset = decode_locdesc (DW_BLOCK (attr), cu); | |
8101 | else | |
8102 | dwarf2_complex_location_expr_complaint (); | |
8103 | ||
8104 | return 1; | |
8105 | } | |
8106 | ||
8107 | return 0; | |
8108 | } | |
8109 | ||
c906108c SS |
8110 | /* Add an aggregate field to the field list. */ |
8111 | ||
8112 | static void | |
107d2387 | 8113 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 8114 | struct dwarf2_cu *cu) |
6e70227d | 8115 | { |
e7c27a73 | 8116 | struct objfile *objfile = cu->objfile; |
5e2b427d | 8117 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
8118 | struct nextfield *new_field; |
8119 | struct attribute *attr; | |
8120 | struct field *fp; | |
8121 | char *fieldname = ""; | |
8122 | ||
8123 | /* Allocate a new field list entry and link it in. */ | |
8124 | new_field = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 8125 | make_cleanup (xfree, new_field); |
c906108c | 8126 | memset (new_field, 0, sizeof (struct nextfield)); |
7d0ccb61 DJ |
8127 | |
8128 | if (die->tag == DW_TAG_inheritance) | |
8129 | { | |
8130 | new_field->next = fip->baseclasses; | |
8131 | fip->baseclasses = new_field; | |
8132 | } | |
8133 | else | |
8134 | { | |
8135 | new_field->next = fip->fields; | |
8136 | fip->fields = new_field; | |
8137 | } | |
c906108c SS |
8138 | fip->nfields++; |
8139 | ||
e142c38c | 8140 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
8141 | if (attr) |
8142 | new_field->accessibility = DW_UNSND (attr); | |
60d5a603 JK |
8143 | else |
8144 | new_field->accessibility = dwarf2_default_access_attribute (die, cu); | |
c906108c SS |
8145 | if (new_field->accessibility != DW_ACCESS_public) |
8146 | fip->non_public_fields = 1; | |
60d5a603 | 8147 | |
e142c38c | 8148 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
8149 | if (attr) |
8150 | new_field->virtuality = DW_UNSND (attr); | |
60d5a603 JK |
8151 | else |
8152 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
8153 | |
8154 | fp = &new_field->field; | |
a9a9bd0f | 8155 | |
e142c38c | 8156 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 8157 | { |
74ac6d43 TT |
8158 | LONGEST offset; |
8159 | ||
a9a9bd0f | 8160 | /* Data member other than a C++ static data member. */ |
6e70227d | 8161 | |
c906108c | 8162 | /* Get type of field. */ |
e7c27a73 | 8163 | fp->type = die_type (die, cu); |
c906108c | 8164 | |
d6a843b5 | 8165 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 8166 | |
c906108c | 8167 | /* Get bit size of field (zero if none). */ |
e142c38c | 8168 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
8169 | if (attr) |
8170 | { | |
8171 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
8172 | } | |
8173 | else | |
8174 | { | |
8175 | FIELD_BITSIZE (*fp) = 0; | |
8176 | } | |
8177 | ||
8178 | /* Get bit offset of field. */ | |
74ac6d43 TT |
8179 | if (handle_data_member_location (die, cu, &offset)) |
8180 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
e142c38c | 8181 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
8182 | if (attr) |
8183 | { | |
5e2b427d | 8184 | if (gdbarch_bits_big_endian (gdbarch)) |
c906108c SS |
8185 | { |
8186 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
8187 | additional bit offset from the MSB of the containing |
8188 | anonymous object to the MSB of the field. We don't | |
8189 | have to do anything special since we don't need to | |
8190 | know the size of the anonymous object. */ | |
f41f5e61 | 8191 | SET_FIELD_BITPOS (*fp, FIELD_BITPOS (*fp) + DW_UNSND (attr)); |
c906108c SS |
8192 | } |
8193 | else | |
8194 | { | |
8195 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
8196 | MSB of the anonymous object, subtract off the number of |
8197 | bits from the MSB of the field to the MSB of the | |
8198 | object, and then subtract off the number of bits of | |
8199 | the field itself. The result is the bit offset of | |
8200 | the LSB of the field. */ | |
c906108c SS |
8201 | int anonymous_size; |
8202 | int bit_offset = DW_UNSND (attr); | |
8203 | ||
e142c38c | 8204 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
8205 | if (attr) |
8206 | { | |
8207 | /* The size of the anonymous object containing | |
8208 | the bit field is explicit, so use the | |
8209 | indicated size (in bytes). */ | |
8210 | anonymous_size = DW_UNSND (attr); | |
8211 | } | |
8212 | else | |
8213 | { | |
8214 | /* The size of the anonymous object containing | |
8215 | the bit field must be inferred from the type | |
8216 | attribute of the data member containing the | |
8217 | bit field. */ | |
8218 | anonymous_size = TYPE_LENGTH (fp->type); | |
8219 | } | |
f41f5e61 PA |
8220 | SET_FIELD_BITPOS (*fp, |
8221 | (FIELD_BITPOS (*fp) | |
8222 | + anonymous_size * bits_per_byte | |
8223 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
8224 | } |
8225 | } | |
8226 | ||
8227 | /* Get name of field. */ | |
39cbfefa DJ |
8228 | fieldname = dwarf2_name (die, cu); |
8229 | if (fieldname == NULL) | |
8230 | fieldname = ""; | |
d8151005 DJ |
8231 | |
8232 | /* The name is already allocated along with this objfile, so we don't | |
8233 | need to duplicate it for the type. */ | |
8234 | fp->name = fieldname; | |
c906108c SS |
8235 | |
8236 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 8237 | pointer or virtual base class pointer) to private. */ |
e142c38c | 8238 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 8239 | { |
d48cc9dd | 8240 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
8241 | new_field->accessibility = DW_ACCESS_private; |
8242 | fip->non_public_fields = 1; | |
8243 | } | |
8244 | } | |
a9a9bd0f | 8245 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 8246 | { |
a9a9bd0f DC |
8247 | /* C++ static member. */ |
8248 | ||
8249 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
8250 | is a declaration, but all versions of G++ as of this writing | |
8251 | (so through at least 3.2.1) incorrectly generate | |
8252 | DW_TAG_variable tags. */ | |
6e70227d | 8253 | |
ff355380 | 8254 | const char *physname; |
c906108c | 8255 | |
a9a9bd0f | 8256 | /* Get name of field. */ |
39cbfefa DJ |
8257 | fieldname = dwarf2_name (die, cu); |
8258 | if (fieldname == NULL) | |
c906108c SS |
8259 | return; |
8260 | ||
254e6b9e | 8261 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
8262 | if (attr |
8263 | /* Only create a symbol if this is an external value. | |
8264 | new_symbol checks this and puts the value in the global symbol | |
8265 | table, which we want. If it is not external, new_symbol | |
8266 | will try to put the value in cu->list_in_scope which is wrong. */ | |
8267 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
8268 | { |
8269 | /* A static const member, not much different than an enum as far as | |
8270 | we're concerned, except that we can support more types. */ | |
8271 | new_symbol (die, NULL, cu); | |
8272 | } | |
8273 | ||
2df3850c | 8274 | /* Get physical name. */ |
ff355380 | 8275 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 8276 | |
d8151005 DJ |
8277 | /* The name is already allocated along with this objfile, so we don't |
8278 | need to duplicate it for the type. */ | |
8279 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 8280 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 8281 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
8282 | } |
8283 | else if (die->tag == DW_TAG_inheritance) | |
8284 | { | |
74ac6d43 | 8285 | LONGEST offset; |
d4b96c9a | 8286 | |
74ac6d43 TT |
8287 | /* C++ base class field. */ |
8288 | if (handle_data_member_location (die, cu, &offset)) | |
8289 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
c906108c | 8290 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 8291 | FIELD_TYPE (*fp) = die_type (die, cu); |
c906108c SS |
8292 | FIELD_NAME (*fp) = type_name_no_tag (fp->type); |
8293 | fip->nbaseclasses++; | |
8294 | } | |
8295 | } | |
8296 | ||
98751a41 JK |
8297 | /* Add a typedef defined in the scope of the FIP's class. */ |
8298 | ||
8299 | static void | |
8300 | dwarf2_add_typedef (struct field_info *fip, struct die_info *die, | |
8301 | struct dwarf2_cu *cu) | |
6e70227d | 8302 | { |
98751a41 | 8303 | struct objfile *objfile = cu->objfile; |
98751a41 JK |
8304 | struct typedef_field_list *new_field; |
8305 | struct attribute *attr; | |
8306 | struct typedef_field *fp; | |
8307 | char *fieldname = ""; | |
8308 | ||
8309 | /* Allocate a new field list entry and link it in. */ | |
8310 | new_field = xzalloc (sizeof (*new_field)); | |
8311 | make_cleanup (xfree, new_field); | |
8312 | ||
8313 | gdb_assert (die->tag == DW_TAG_typedef); | |
8314 | ||
8315 | fp = &new_field->field; | |
8316 | ||
8317 | /* Get name of field. */ | |
8318 | fp->name = dwarf2_name (die, cu); | |
8319 | if (fp->name == NULL) | |
8320 | return; | |
8321 | ||
8322 | fp->type = read_type_die (die, cu); | |
8323 | ||
8324 | new_field->next = fip->typedef_field_list; | |
8325 | fip->typedef_field_list = new_field; | |
8326 | fip->typedef_field_list_count++; | |
8327 | } | |
8328 | ||
c906108c SS |
8329 | /* Create the vector of fields, and attach it to the type. */ |
8330 | ||
8331 | static void | |
fba45db2 | 8332 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 8333 | struct dwarf2_cu *cu) |
c906108c SS |
8334 | { |
8335 | int nfields = fip->nfields; | |
8336 | ||
8337 | /* Record the field count, allocate space for the array of fields, | |
8338 | and create blank accessibility bitfields if necessary. */ | |
8339 | TYPE_NFIELDS (type) = nfields; | |
8340 | TYPE_FIELDS (type) = (struct field *) | |
8341 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
8342 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
8343 | ||
b4ba55a1 | 8344 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
8345 | { |
8346 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
8347 | ||
8348 | TYPE_FIELD_PRIVATE_BITS (type) = | |
8349 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
8350 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
8351 | ||
8352 | TYPE_FIELD_PROTECTED_BITS (type) = | |
8353 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
8354 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
8355 | ||
774b6a14 TT |
8356 | TYPE_FIELD_IGNORE_BITS (type) = |
8357 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
8358 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
8359 | } |
8360 | ||
8361 | /* If the type has baseclasses, allocate and clear a bit vector for | |
8362 | TYPE_FIELD_VIRTUAL_BITS. */ | |
b4ba55a1 | 8363 | if (fip->nbaseclasses && cu->language != language_ada) |
c906108c SS |
8364 | { |
8365 | int num_bytes = B_BYTES (fip->nbaseclasses); | |
fe1b8b76 | 8366 | unsigned char *pointer; |
c906108c SS |
8367 | |
8368 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
fe1b8b76 JB |
8369 | pointer = TYPE_ALLOC (type, num_bytes); |
8370 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; | |
c906108c SS |
8371 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->nbaseclasses); |
8372 | TYPE_N_BASECLASSES (type) = fip->nbaseclasses; | |
8373 | } | |
8374 | ||
3e43a32a MS |
8375 | /* Copy the saved-up fields into the field vector. Start from the head of |
8376 | the list, adding to the tail of the field array, so that they end up in | |
8377 | the same order in the array in which they were added to the list. */ | |
c906108c SS |
8378 | while (nfields-- > 0) |
8379 | { | |
7d0ccb61 DJ |
8380 | struct nextfield *fieldp; |
8381 | ||
8382 | if (fip->fields) | |
8383 | { | |
8384 | fieldp = fip->fields; | |
8385 | fip->fields = fieldp->next; | |
8386 | } | |
8387 | else | |
8388 | { | |
8389 | fieldp = fip->baseclasses; | |
8390 | fip->baseclasses = fieldp->next; | |
8391 | } | |
8392 | ||
8393 | TYPE_FIELD (type, nfields) = fieldp->field; | |
8394 | switch (fieldp->accessibility) | |
c906108c | 8395 | { |
c5aa993b | 8396 | case DW_ACCESS_private: |
b4ba55a1 JB |
8397 | if (cu->language != language_ada) |
8398 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
c5aa993b | 8399 | break; |
c906108c | 8400 | |
c5aa993b | 8401 | case DW_ACCESS_protected: |
b4ba55a1 JB |
8402 | if (cu->language != language_ada) |
8403 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
c5aa993b | 8404 | break; |
c906108c | 8405 | |
c5aa993b JM |
8406 | case DW_ACCESS_public: |
8407 | break; | |
c906108c | 8408 | |
c5aa993b JM |
8409 | default: |
8410 | /* Unknown accessibility. Complain and treat it as public. */ | |
8411 | { | |
e2e0b3e5 | 8412 | complaint (&symfile_complaints, _("unsupported accessibility %d"), |
7d0ccb61 | 8413 | fieldp->accessibility); |
c5aa993b JM |
8414 | } |
8415 | break; | |
c906108c SS |
8416 | } |
8417 | if (nfields < fip->nbaseclasses) | |
8418 | { | |
7d0ccb61 | 8419 | switch (fieldp->virtuality) |
c906108c | 8420 | { |
c5aa993b JM |
8421 | case DW_VIRTUALITY_virtual: |
8422 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 8423 | if (cu->language == language_ada) |
a73c6dcd | 8424 | error (_("unexpected virtuality in component of Ada type")); |
c5aa993b JM |
8425 | SET_TYPE_FIELD_VIRTUAL (type, nfields); |
8426 | break; | |
c906108c SS |
8427 | } |
8428 | } | |
c906108c SS |
8429 | } |
8430 | } | |
8431 | ||
c906108c SS |
8432 | /* Add a member function to the proper fieldlist. */ |
8433 | ||
8434 | static void | |
107d2387 | 8435 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 8436 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 8437 | { |
e7c27a73 | 8438 | struct objfile *objfile = cu->objfile; |
c906108c SS |
8439 | struct attribute *attr; |
8440 | struct fnfieldlist *flp; | |
8441 | int i; | |
8442 | struct fn_field *fnp; | |
8443 | char *fieldname; | |
c906108c | 8444 | struct nextfnfield *new_fnfield; |
f792889a | 8445 | struct type *this_type; |
60d5a603 | 8446 | enum dwarf_access_attribute accessibility; |
c906108c | 8447 | |
b4ba55a1 | 8448 | if (cu->language == language_ada) |
a73c6dcd | 8449 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 8450 | |
2df3850c | 8451 | /* Get name of member function. */ |
39cbfefa DJ |
8452 | fieldname = dwarf2_name (die, cu); |
8453 | if (fieldname == NULL) | |
2df3850c | 8454 | return; |
c906108c | 8455 | |
c906108c SS |
8456 | /* Look up member function name in fieldlist. */ |
8457 | for (i = 0; i < fip->nfnfields; i++) | |
8458 | { | |
27bfe10e | 8459 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
c906108c SS |
8460 | break; |
8461 | } | |
8462 | ||
8463 | /* Create new list element if necessary. */ | |
8464 | if (i < fip->nfnfields) | |
8465 | flp = &fip->fnfieldlists[i]; | |
8466 | else | |
8467 | { | |
8468 | if ((fip->nfnfields % DW_FIELD_ALLOC_CHUNK) == 0) | |
8469 | { | |
8470 | fip->fnfieldlists = (struct fnfieldlist *) | |
8471 | xrealloc (fip->fnfieldlists, | |
8472 | (fip->nfnfields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 8473 | * sizeof (struct fnfieldlist)); |
c906108c | 8474 | if (fip->nfnfields == 0) |
c13c43fd | 8475 | make_cleanup (free_current_contents, &fip->fnfieldlists); |
c906108c SS |
8476 | } |
8477 | flp = &fip->fnfieldlists[fip->nfnfields]; | |
8478 | flp->name = fieldname; | |
8479 | flp->length = 0; | |
8480 | flp->head = NULL; | |
3da10d80 | 8481 | i = fip->nfnfields++; |
c906108c SS |
8482 | } |
8483 | ||
8484 | /* Create a new member function field and chain it to the field list | |
0963b4bd | 8485 | entry. */ |
c906108c | 8486 | new_fnfield = (struct nextfnfield *) xmalloc (sizeof (struct nextfnfield)); |
b8c9b27d | 8487 | make_cleanup (xfree, new_fnfield); |
c906108c SS |
8488 | memset (new_fnfield, 0, sizeof (struct nextfnfield)); |
8489 | new_fnfield->next = flp->head; | |
8490 | flp->head = new_fnfield; | |
8491 | flp->length++; | |
8492 | ||
8493 | /* Fill in the member function field info. */ | |
8494 | fnp = &new_fnfield->fnfield; | |
3da10d80 KS |
8495 | |
8496 | /* Delay processing of the physname until later. */ | |
8497 | if (cu->language == language_cplus || cu->language == language_java) | |
8498 | { | |
8499 | add_to_method_list (type, i, flp->length - 1, fieldname, | |
8500 | die, cu); | |
8501 | } | |
8502 | else | |
8503 | { | |
1d06ead6 | 8504 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
8505 | fnp->physname = physname ? physname : ""; |
8506 | } | |
8507 | ||
c906108c | 8508 | fnp->type = alloc_type (objfile); |
f792889a DJ |
8509 | this_type = read_type_die (die, cu); |
8510 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 8511 | { |
f792889a | 8512 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 8513 | |
f792889a | 8514 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
8515 | of the method itself (TYPE_CODE_METHOD). */ |
8516 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
8517 | TYPE_TARGET_TYPE (this_type), |
8518 | TYPE_FIELDS (this_type), | |
8519 | TYPE_NFIELDS (this_type), | |
8520 | TYPE_VARARGS (this_type)); | |
c906108c SS |
8521 | |
8522 | /* Handle static member functions. | |
c5aa993b | 8523 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
8524 | member functions. G++ helps GDB by marking the first |
8525 | parameter for non-static member functions (which is the this | |
8526 | pointer) as artificial. We obtain this information from | |
8527 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 8528 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
8529 | fnp->voffset = VOFFSET_STATIC; |
8530 | } | |
8531 | else | |
e2e0b3e5 | 8532 | complaint (&symfile_complaints, _("member function type missing for '%s'"), |
3da10d80 | 8533 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
8534 | |
8535 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 8536 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 8537 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 8538 | |
3e43a32a MS |
8539 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
8540 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
8541 | |
8542 | /* Get accessibility. */ | |
e142c38c | 8543 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c | 8544 | if (attr) |
60d5a603 JK |
8545 | accessibility = DW_UNSND (attr); |
8546 | else | |
8547 | accessibility = dwarf2_default_access_attribute (die, cu); | |
8548 | switch (accessibility) | |
c906108c | 8549 | { |
60d5a603 JK |
8550 | case DW_ACCESS_private: |
8551 | fnp->is_private = 1; | |
8552 | break; | |
8553 | case DW_ACCESS_protected: | |
8554 | fnp->is_protected = 1; | |
8555 | break; | |
c906108c SS |
8556 | } |
8557 | ||
b02dede2 | 8558 | /* Check for artificial methods. */ |
e142c38c | 8559 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
8560 | if (attr && DW_UNSND (attr) != 0) |
8561 | fnp->is_artificial = 1; | |
8562 | ||
0d564a31 | 8563 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
8564 | function. For older versions of GCC, this is an offset in the |
8565 | appropriate virtual table, as specified by DW_AT_containing_type. | |
8566 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
8567 | to the object address. */ |
8568 | ||
e142c38c | 8569 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
aec5aa8b | 8570 | if (attr) |
8e19ed76 | 8571 | { |
aec5aa8b | 8572 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 8573 | { |
aec5aa8b TT |
8574 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
8575 | { | |
8576 | /* Old-style GCC. */ | |
8577 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
8578 | } | |
8579 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
8580 | || (DW_BLOCK (attr)->size > 1 | |
8581 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
8582 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
8583 | { | |
8584 | struct dwarf_block blk; | |
8585 | int offset; | |
8586 | ||
8587 | offset = (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
8588 | ? 1 : 2); | |
8589 | blk.size = DW_BLOCK (attr)->size - offset; | |
8590 | blk.data = DW_BLOCK (attr)->data + offset; | |
8591 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); | |
8592 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
8593 | dwarf2_complex_location_expr_complaint (); | |
8594 | else | |
8595 | fnp->voffset /= cu->header.addr_size; | |
8596 | fnp->voffset += 2; | |
8597 | } | |
8598 | else | |
8599 | dwarf2_complex_location_expr_complaint (); | |
8600 | ||
8601 | if (!fnp->fcontext) | |
8602 | fnp->fcontext = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
8603 | } | |
3690dd37 | 8604 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 8605 | { |
4d3c2250 | 8606 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
8607 | } |
8608 | else | |
8609 | { | |
4d3c2250 KB |
8610 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
8611 | fieldname); | |
8e19ed76 | 8612 | } |
0d564a31 | 8613 | } |
d48cc9dd DJ |
8614 | else |
8615 | { | |
8616 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
8617 | if (attr && DW_UNSND (attr)) | |
8618 | { | |
8619 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
8620 | complaint (&symfile_complaints, | |
3e43a32a MS |
8621 | _("Member function \"%s\" (offset %d) is virtual " |
8622 | "but the vtable offset is not specified"), | |
b64f50a1 | 8623 | fieldname, die->offset.sect_off); |
9655fd1a | 8624 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
8625 | TYPE_CPLUS_DYNAMIC (type) = 1; |
8626 | } | |
8627 | } | |
c906108c SS |
8628 | } |
8629 | ||
8630 | /* Create the vector of member function fields, and attach it to the type. */ | |
8631 | ||
8632 | static void | |
fba45db2 | 8633 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 8634 | struct dwarf2_cu *cu) |
c906108c SS |
8635 | { |
8636 | struct fnfieldlist *flp; | |
c906108c SS |
8637 | int i; |
8638 | ||
b4ba55a1 | 8639 | if (cu->language == language_ada) |
a73c6dcd | 8640 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 8641 | |
c906108c SS |
8642 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
8643 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
8644 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * fip->nfnfields); | |
8645 | ||
8646 | for (i = 0, flp = fip->fnfieldlists; i < fip->nfnfields; i++, flp++) | |
8647 | { | |
8648 | struct nextfnfield *nfp = flp->head; | |
8649 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); | |
8650 | int k; | |
8651 | ||
8652 | TYPE_FN_FIELDLIST_NAME (type, i) = flp->name; | |
8653 | TYPE_FN_FIELDLIST_LENGTH (type, i) = flp->length; | |
8654 | fn_flp->fn_fields = (struct fn_field *) | |
8655 | TYPE_ALLOC (type, sizeof (struct fn_field) * flp->length); | |
8656 | for (k = flp->length; (k--, nfp); nfp = nfp->next) | |
c5aa993b | 8657 | fn_flp->fn_fields[k] = nfp->fnfield; |
c906108c SS |
8658 | } |
8659 | ||
8660 | TYPE_NFN_FIELDS (type) = fip->nfnfields; | |
c906108c SS |
8661 | } |
8662 | ||
1168df01 JB |
8663 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
8664 | language, zero otherwise. */ | |
8665 | static int | |
8666 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
8667 | { | |
8668 | static const char vptr[] = "_vptr"; | |
987504bb | 8669 | static const char vtable[] = "vtable"; |
1168df01 | 8670 | |
987504bb JJ |
8671 | /* Look for the C++ and Java forms of the vtable. */ |
8672 | if ((cu->language == language_java | |
8673 | && strncmp (name, vtable, sizeof (vtable) - 1) == 0) | |
8674 | || (strncmp (name, vptr, sizeof (vptr) - 1) == 0 | |
8675 | && is_cplus_marker (name[sizeof (vptr) - 1]))) | |
1168df01 JB |
8676 | return 1; |
8677 | ||
8678 | return 0; | |
8679 | } | |
8680 | ||
c0dd20ea | 8681 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
8682 | functions, with the ABI-specified layout. If TYPE describes |
8683 | such a structure, smash it into a member function type. | |
61049d3b DJ |
8684 | |
8685 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
8686 | This is GCC PR debug/28767. */ | |
c0dd20ea | 8687 | |
0b92b5bb TT |
8688 | static void |
8689 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 8690 | { |
0b92b5bb | 8691 | struct type *pfn_type, *domain_type, *new_type; |
c0dd20ea DJ |
8692 | |
8693 | /* Check for a structure with no name and two children. */ | |
0b92b5bb TT |
8694 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2) |
8695 | return; | |
c0dd20ea DJ |
8696 | |
8697 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
8698 | if (TYPE_FIELD_NAME (type, 0) == NULL |
8699 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
8700 | || TYPE_FIELD_NAME (type, 1) == NULL | |
8701 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
8702 | return; | |
c0dd20ea DJ |
8703 | |
8704 | /* Find the type of the method. */ | |
0b92b5bb | 8705 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea DJ |
8706 | if (pfn_type == NULL |
8707 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
8708 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
0b92b5bb | 8709 | return; |
c0dd20ea DJ |
8710 | |
8711 | /* Look for the "this" argument. */ | |
8712 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
8713 | if (TYPE_NFIELDS (pfn_type) == 0 | |
0b92b5bb | 8714 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
c0dd20ea | 8715 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) |
0b92b5bb | 8716 | return; |
c0dd20ea DJ |
8717 | |
8718 | domain_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); | |
0b92b5bb TT |
8719 | new_type = alloc_type (objfile); |
8720 | smash_to_method_type (new_type, domain_type, TYPE_TARGET_TYPE (pfn_type), | |
c0dd20ea DJ |
8721 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), |
8722 | TYPE_VARARGS (pfn_type)); | |
0b92b5bb | 8723 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 8724 | } |
1168df01 | 8725 | |
c906108c | 8726 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
8727 | (definition) to create a type for the structure or union. Fill in |
8728 | the type's name and general properties; the members will not be | |
8729 | processed until process_structure_type. | |
c906108c | 8730 | |
c767944b DJ |
8731 | NOTE: we need to call these functions regardless of whether or not the |
8732 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c SS |
8733 | structure or union. This gets the type entered into our set of |
8734 | user defined types. | |
8735 | ||
8736 | However, if the structure is incomplete (an opaque struct/union) | |
8737 | then suppress creating a symbol table entry for it since gdb only | |
8738 | wants to find the one with the complete definition. Note that if | |
8739 | it is complete, we just call new_symbol, which does it's own | |
8740 | checking about whether the struct/union is anonymous or not (and | |
8741 | suppresses creating a symbol table entry itself). */ | |
8742 | ||
f792889a | 8743 | static struct type * |
134d01f1 | 8744 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 8745 | { |
e7c27a73 | 8746 | struct objfile *objfile = cu->objfile; |
c906108c SS |
8747 | struct type *type; |
8748 | struct attribute *attr; | |
39cbfefa | 8749 | char *name; |
c906108c | 8750 | |
348e048f DE |
8751 | /* If the definition of this type lives in .debug_types, read that type. |
8752 | Don't follow DW_AT_specification though, that will take us back up | |
8753 | the chain and we want to go down. */ | |
8754 | attr = dwarf2_attr_no_follow (die, DW_AT_signature, cu); | |
8755 | if (attr) | |
8756 | { | |
8757 | struct dwarf2_cu *type_cu = cu; | |
8758 | struct die_info *type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
9a619af0 | 8759 | |
348e048f DE |
8760 | /* We could just recurse on read_structure_type, but we need to call |
8761 | get_die_type to ensure only one type for this DIE is created. | |
8762 | This is important, for example, because for c++ classes we need | |
8763 | TYPE_NAME set which is only done by new_symbol. Blech. */ | |
8764 | type = read_type_die (type_die, type_cu); | |
9dc481d3 DE |
8765 | |
8766 | /* TYPE_CU may not be the same as CU. | |
8767 | Ensure TYPE is recorded in CU's type_hash table. */ | |
348e048f DE |
8768 | return set_die_type (die, type, cu); |
8769 | } | |
8770 | ||
c0dd20ea | 8771 | type = alloc_type (objfile); |
c906108c | 8772 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 8773 | |
39cbfefa DJ |
8774 | name = dwarf2_name (die, cu); |
8775 | if (name != NULL) | |
c906108c | 8776 | { |
987504bb JJ |
8777 | if (cu->language == language_cplus |
8778 | || cu->language == language_java) | |
63d06c5c | 8779 | { |
3da10d80 KS |
8780 | char *full_name = (char *) dwarf2_full_name (name, die, cu); |
8781 | ||
8782 | /* dwarf2_full_name might have already finished building the DIE's | |
8783 | type. If so, there is no need to continue. */ | |
8784 | if (get_die_type (die, cu) != NULL) | |
8785 | return get_die_type (die, cu); | |
8786 | ||
8787 | TYPE_TAG_NAME (type) = full_name; | |
94af9270 KS |
8788 | if (die->tag == DW_TAG_structure_type |
8789 | || die->tag == DW_TAG_class_type) | |
8790 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c DC |
8791 | } |
8792 | else | |
8793 | { | |
d8151005 DJ |
8794 | /* The name is already allocated along with this objfile, so |
8795 | we don't need to duplicate it for the type. */ | |
94af9270 KS |
8796 | TYPE_TAG_NAME (type) = (char *) name; |
8797 | if (die->tag == DW_TAG_class_type) | |
8798 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c | 8799 | } |
c906108c SS |
8800 | } |
8801 | ||
8802 | if (die->tag == DW_TAG_structure_type) | |
8803 | { | |
8804 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
8805 | } | |
8806 | else if (die->tag == DW_TAG_union_type) | |
8807 | { | |
8808 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
8809 | } | |
8810 | else | |
8811 | { | |
c906108c SS |
8812 | TYPE_CODE (type) = TYPE_CODE_CLASS; |
8813 | } | |
8814 | ||
0cc2414c TT |
8815 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
8816 | TYPE_DECLARED_CLASS (type) = 1; | |
8817 | ||
e142c38c | 8818 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
8819 | if (attr) |
8820 | { | |
8821 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
8822 | } | |
8823 | else | |
8824 | { | |
8825 | TYPE_LENGTH (type) = 0; | |
8826 | } | |
8827 | ||
876cecd0 | 8828 | TYPE_STUB_SUPPORTED (type) = 1; |
dc718098 | 8829 | if (die_is_declaration (die, cu)) |
876cecd0 | 8830 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
8831 | else if (attr == NULL && die->child == NULL |
8832 | && producer_is_realview (cu->producer)) | |
8833 | /* RealView does not output the required DW_AT_declaration | |
8834 | on incomplete types. */ | |
8835 | TYPE_STUB (type) = 1; | |
dc718098 | 8836 | |
c906108c SS |
8837 | /* We need to add the type field to the die immediately so we don't |
8838 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 8839 | type within the structure itself. */ |
1c379e20 | 8840 | set_die_type (die, type, cu); |
c906108c | 8841 | |
7e314c57 JK |
8842 | /* set_die_type should be already done. */ |
8843 | set_descriptive_type (type, die, cu); | |
8844 | ||
c767944b DJ |
8845 | return type; |
8846 | } | |
8847 | ||
8848 | /* Finish creating a structure or union type, including filling in | |
8849 | its members and creating a symbol for it. */ | |
8850 | ||
8851 | static void | |
8852 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
8853 | { | |
8854 | struct objfile *objfile = cu->objfile; | |
8855 | struct die_info *child_die = die->child; | |
8856 | struct type *type; | |
8857 | ||
8858 | type = get_die_type (die, cu); | |
8859 | if (type == NULL) | |
8860 | type = read_structure_type (die, cu); | |
8861 | ||
e142c38c | 8862 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
8863 | { |
8864 | struct field_info fi; | |
8865 | struct die_info *child_die; | |
34eaf542 | 8866 | VEC (symbolp) *template_args = NULL; |
c767944b | 8867 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
c906108c SS |
8868 | |
8869 | memset (&fi, 0, sizeof (struct field_info)); | |
8870 | ||
639d11d3 | 8871 | child_die = die->child; |
c906108c SS |
8872 | |
8873 | while (child_die && child_die->tag) | |
8874 | { | |
a9a9bd0f DC |
8875 | if (child_die->tag == DW_TAG_member |
8876 | || child_die->tag == DW_TAG_variable) | |
c906108c | 8877 | { |
a9a9bd0f DC |
8878 | /* NOTE: carlton/2002-11-05: A C++ static data member |
8879 | should be a DW_TAG_member that is a declaration, but | |
8880 | all versions of G++ as of this writing (so through at | |
8881 | least 3.2.1) incorrectly generate DW_TAG_variable | |
8882 | tags for them instead. */ | |
e7c27a73 | 8883 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 8884 | } |
8713b1b1 | 8885 | else if (child_die->tag == DW_TAG_subprogram) |
c906108c | 8886 | { |
0963b4bd | 8887 | /* C++ member function. */ |
e7c27a73 | 8888 | dwarf2_add_member_fn (&fi, child_die, type, cu); |
c906108c SS |
8889 | } |
8890 | else if (child_die->tag == DW_TAG_inheritance) | |
8891 | { | |
8892 | /* C++ base class field. */ | |
e7c27a73 | 8893 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 8894 | } |
98751a41 JK |
8895 | else if (child_die->tag == DW_TAG_typedef) |
8896 | dwarf2_add_typedef (&fi, child_die, cu); | |
34eaf542 TT |
8897 | else if (child_die->tag == DW_TAG_template_type_param |
8898 | || child_die->tag == DW_TAG_template_value_param) | |
8899 | { | |
8900 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
8901 | ||
f1078f66 DJ |
8902 | if (arg != NULL) |
8903 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
8904 | } |
8905 | ||
c906108c SS |
8906 | child_die = sibling_die (child_die); |
8907 | } | |
8908 | ||
34eaf542 TT |
8909 | /* Attach template arguments to type. */ |
8910 | if (! VEC_empty (symbolp, template_args)) | |
8911 | { | |
8912 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
8913 | TYPE_N_TEMPLATE_ARGUMENTS (type) | |
8914 | = VEC_length (symbolp, template_args); | |
8915 | TYPE_TEMPLATE_ARGUMENTS (type) | |
8916 | = obstack_alloc (&objfile->objfile_obstack, | |
8917 | (TYPE_N_TEMPLATE_ARGUMENTS (type) | |
8918 | * sizeof (struct symbol *))); | |
8919 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), | |
8920 | VEC_address (symbolp, template_args), | |
8921 | (TYPE_N_TEMPLATE_ARGUMENTS (type) | |
8922 | * sizeof (struct symbol *))); | |
8923 | VEC_free (symbolp, template_args); | |
8924 | } | |
8925 | ||
c906108c SS |
8926 | /* Attach fields and member functions to the type. */ |
8927 | if (fi.nfields) | |
e7c27a73 | 8928 | dwarf2_attach_fields_to_type (&fi, type, cu); |
c906108c SS |
8929 | if (fi.nfnfields) |
8930 | { | |
e7c27a73 | 8931 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 8932 | |
c5aa993b | 8933 | /* Get the type which refers to the base class (possibly this |
c906108c | 8934 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
8935 | class from the DW_AT_containing_type attribute. This use of |
8936 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 8937 | |
e142c38c | 8938 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 8939 | { |
e7c27a73 | 8940 | struct type *t = die_containing_type (die, cu); |
c906108c SS |
8941 | |
8942 | TYPE_VPTR_BASETYPE (type) = t; | |
8943 | if (type == t) | |
8944 | { | |
c906108c SS |
8945 | int i; |
8946 | ||
8947 | /* Our own class provides vtbl ptr. */ | |
8948 | for (i = TYPE_NFIELDS (t) - 1; | |
8949 | i >= TYPE_N_BASECLASSES (t); | |
8950 | --i) | |
8951 | { | |
0d5cff50 | 8952 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 8953 | |
1168df01 | 8954 | if (is_vtable_name (fieldname, cu)) |
c906108c SS |
8955 | { |
8956 | TYPE_VPTR_FIELDNO (type) = i; | |
8957 | break; | |
8958 | } | |
8959 | } | |
8960 | ||
8961 | /* Complain if virtual function table field not found. */ | |
8962 | if (i < TYPE_N_BASECLASSES (t)) | |
4d3c2250 | 8963 | complaint (&symfile_complaints, |
3e43a32a MS |
8964 | _("virtual function table pointer " |
8965 | "not found when defining class '%s'"), | |
4d3c2250 KB |
8966 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : |
8967 | ""); | |
c906108c SS |
8968 | } |
8969 | else | |
8970 | { | |
8971 | TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t); | |
8972 | } | |
8973 | } | |
f6235d4c EZ |
8974 | else if (cu->producer |
8975 | && strncmp (cu->producer, | |
8976 | "IBM(R) XL C/C++ Advanced Edition", 32) == 0) | |
8977 | { | |
8978 | /* The IBM XLC compiler does not provide direct indication | |
8979 | of the containing type, but the vtable pointer is | |
8980 | always named __vfp. */ | |
8981 | ||
8982 | int i; | |
8983 | ||
8984 | for (i = TYPE_NFIELDS (type) - 1; | |
8985 | i >= TYPE_N_BASECLASSES (type); | |
8986 | --i) | |
8987 | { | |
8988 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
8989 | { | |
8990 | TYPE_VPTR_FIELDNO (type) = i; | |
8991 | TYPE_VPTR_BASETYPE (type) = type; | |
8992 | break; | |
8993 | } | |
8994 | } | |
8995 | } | |
c906108c | 8996 | } |
98751a41 JK |
8997 | |
8998 | /* Copy fi.typedef_field_list linked list elements content into the | |
8999 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
9000 | if (fi.typedef_field_list) | |
9001 | { | |
9002 | int i = fi.typedef_field_list_count; | |
9003 | ||
a0d7a4ff | 9004 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 JK |
9005 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
9006 | = TYPE_ALLOC (type, sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * i); | |
9007 | TYPE_TYPEDEF_FIELD_COUNT (type) = i; | |
9008 | ||
9009 | /* Reverse the list order to keep the debug info elements order. */ | |
9010 | while (--i >= 0) | |
9011 | { | |
9012 | struct typedef_field *dest, *src; | |
6e70227d | 9013 | |
98751a41 JK |
9014 | dest = &TYPE_TYPEDEF_FIELD (type, i); |
9015 | src = &fi.typedef_field_list->field; | |
9016 | fi.typedef_field_list = fi.typedef_field_list->next; | |
9017 | *dest = *src; | |
9018 | } | |
9019 | } | |
c767944b DJ |
9020 | |
9021 | do_cleanups (back_to); | |
eb2a6f42 TT |
9022 | |
9023 | if (HAVE_CPLUS_STRUCT (type)) | |
9024 | TYPE_CPLUS_REALLY_JAVA (type) = cu->language == language_java; | |
c906108c | 9025 | } |
63d06c5c | 9026 | |
bb5ed363 | 9027 | quirk_gcc_member_function_pointer (type, objfile); |
0b92b5bb | 9028 | |
90aeadfc DC |
9029 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
9030 | snapshots) has been known to create a die giving a declaration | |
9031 | for a class that has, as a child, a die giving a definition for a | |
9032 | nested class. So we have to process our children even if the | |
9033 | current die is a declaration. Normally, of course, a declaration | |
9034 | won't have any children at all. */ | |
134d01f1 | 9035 | |
90aeadfc DC |
9036 | while (child_die != NULL && child_die->tag) |
9037 | { | |
9038 | if (child_die->tag == DW_TAG_member | |
9039 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
9040 | || child_die->tag == DW_TAG_inheritance |
9041 | || child_die->tag == DW_TAG_template_value_param | |
9042 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 9043 | { |
90aeadfc | 9044 | /* Do nothing. */ |
134d01f1 | 9045 | } |
90aeadfc DC |
9046 | else |
9047 | process_die (child_die, cu); | |
134d01f1 | 9048 | |
90aeadfc | 9049 | child_die = sibling_die (child_die); |
134d01f1 DJ |
9050 | } |
9051 | ||
fa4028e9 JB |
9052 | /* Do not consider external references. According to the DWARF standard, |
9053 | these DIEs are identified by the fact that they have no byte_size | |
9054 | attribute, and a declaration attribute. */ | |
9055 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
9056 | || !die_is_declaration (die, cu)) | |
c767944b | 9057 | new_symbol (die, type, cu); |
134d01f1 DJ |
9058 | } |
9059 | ||
9060 | /* Given a DW_AT_enumeration_type die, set its type. We do not | |
9061 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 9062 | |
f792889a | 9063 | static struct type * |
134d01f1 | 9064 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 9065 | { |
e7c27a73 | 9066 | struct objfile *objfile = cu->objfile; |
c906108c | 9067 | struct type *type; |
c906108c | 9068 | struct attribute *attr; |
0114d602 | 9069 | const char *name; |
134d01f1 | 9070 | |
348e048f DE |
9071 | /* If the definition of this type lives in .debug_types, read that type. |
9072 | Don't follow DW_AT_specification though, that will take us back up | |
9073 | the chain and we want to go down. */ | |
9074 | attr = dwarf2_attr_no_follow (die, DW_AT_signature, cu); | |
9075 | if (attr) | |
9076 | { | |
9077 | struct dwarf2_cu *type_cu = cu; | |
9078 | struct die_info *type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
9a619af0 | 9079 | |
348e048f | 9080 | type = read_type_die (type_die, type_cu); |
9dc481d3 DE |
9081 | |
9082 | /* TYPE_CU may not be the same as CU. | |
9083 | Ensure TYPE is recorded in CU's type_hash table. */ | |
348e048f DE |
9084 | return set_die_type (die, type, cu); |
9085 | } | |
9086 | ||
c906108c SS |
9087 | type = alloc_type (objfile); |
9088 | ||
9089 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
94af9270 | 9090 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 9091 | if (name != NULL) |
0114d602 | 9092 | TYPE_TAG_NAME (type) = (char *) name; |
c906108c | 9093 | |
e142c38c | 9094 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
9095 | if (attr) |
9096 | { | |
9097 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
9098 | } | |
9099 | else | |
9100 | { | |
9101 | TYPE_LENGTH (type) = 0; | |
9102 | } | |
9103 | ||
137033e9 JB |
9104 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
9105 | declared as private in the package spec, and then defined only | |
9106 | inside the package body. Such types are known as Taft Amendment | |
9107 | Types. When another package uses such a type, an incomplete DIE | |
9108 | may be generated by the compiler. */ | |
02eb380e | 9109 | if (die_is_declaration (die, cu)) |
876cecd0 | 9110 | TYPE_STUB (type) = 1; |
02eb380e | 9111 | |
f792889a | 9112 | return set_die_type (die, type, cu); |
134d01f1 DJ |
9113 | } |
9114 | ||
9115 | /* Given a pointer to a die which begins an enumeration, process all | |
9116 | the dies that define the members of the enumeration, and create the | |
9117 | symbol for the enumeration type. | |
9118 | ||
9119 | NOTE: We reverse the order of the element list. */ | |
9120 | ||
9121 | static void | |
9122 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
9123 | { | |
f792889a | 9124 | struct type *this_type; |
134d01f1 | 9125 | |
f792889a DJ |
9126 | this_type = get_die_type (die, cu); |
9127 | if (this_type == NULL) | |
9128 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 9129 | |
639d11d3 | 9130 | if (die->child != NULL) |
c906108c | 9131 | { |
9dc481d3 DE |
9132 | struct die_info *child_die; |
9133 | struct symbol *sym; | |
9134 | struct field *fields = NULL; | |
9135 | int num_fields = 0; | |
9136 | int unsigned_enum = 1; | |
9137 | char *name; | |
cafec441 TT |
9138 | int flag_enum = 1; |
9139 | ULONGEST mask = 0; | |
9dc481d3 | 9140 | |
639d11d3 | 9141 | child_die = die->child; |
c906108c SS |
9142 | while (child_die && child_die->tag) |
9143 | { | |
9144 | if (child_die->tag != DW_TAG_enumerator) | |
9145 | { | |
e7c27a73 | 9146 | process_die (child_die, cu); |
c906108c SS |
9147 | } |
9148 | else | |
9149 | { | |
39cbfefa DJ |
9150 | name = dwarf2_name (child_die, cu); |
9151 | if (name) | |
c906108c | 9152 | { |
f792889a | 9153 | sym = new_symbol (child_die, this_type, cu); |
c906108c | 9154 | if (SYMBOL_VALUE (sym) < 0) |
cafec441 TT |
9155 | { |
9156 | unsigned_enum = 0; | |
9157 | flag_enum = 0; | |
9158 | } | |
9159 | else if ((mask & SYMBOL_VALUE (sym)) != 0) | |
9160 | flag_enum = 0; | |
9161 | else | |
9162 | mask |= SYMBOL_VALUE (sym); | |
c906108c SS |
9163 | |
9164 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
9165 | { | |
9166 | fields = (struct field *) | |
9167 | xrealloc (fields, | |
9168 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 9169 | * sizeof (struct field)); |
c906108c SS |
9170 | } |
9171 | ||
3567439c | 9172 | FIELD_NAME (fields[num_fields]) = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 9173 | FIELD_TYPE (fields[num_fields]) = NULL; |
14e75d8e | 9174 | SET_FIELD_ENUMVAL (fields[num_fields], SYMBOL_VALUE (sym)); |
c906108c SS |
9175 | FIELD_BITSIZE (fields[num_fields]) = 0; |
9176 | ||
9177 | num_fields++; | |
9178 | } | |
9179 | } | |
9180 | ||
9181 | child_die = sibling_die (child_die); | |
9182 | } | |
9183 | ||
9184 | if (num_fields) | |
9185 | { | |
f792889a DJ |
9186 | TYPE_NFIELDS (this_type) = num_fields; |
9187 | TYPE_FIELDS (this_type) = (struct field *) | |
9188 | TYPE_ALLOC (this_type, sizeof (struct field) * num_fields); | |
9189 | memcpy (TYPE_FIELDS (this_type), fields, | |
c906108c | 9190 | sizeof (struct field) * num_fields); |
b8c9b27d | 9191 | xfree (fields); |
c906108c SS |
9192 | } |
9193 | if (unsigned_enum) | |
876cecd0 | 9194 | TYPE_UNSIGNED (this_type) = 1; |
cafec441 TT |
9195 | if (flag_enum) |
9196 | TYPE_FLAG_ENUM (this_type) = 1; | |
c906108c | 9197 | } |
134d01f1 | 9198 | |
6c83ed52 TT |
9199 | /* If we are reading an enum from a .debug_types unit, and the enum |
9200 | is a declaration, and the enum is not the signatured type in the | |
9201 | unit, then we do not want to add a symbol for it. Adding a | |
9202 | symbol would in some cases obscure the true definition of the | |
9203 | enum, giving users an incomplete type when the definition is | |
9204 | actually available. Note that we do not want to do this for all | |
9205 | enums which are just declarations, because C++0x allows forward | |
9206 | enum declarations. */ | |
3019eac3 | 9207 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
9208 | && die_is_declaration (die, cu)) |
9209 | { | |
52dc124a | 9210 | struct signatured_type *sig_type; |
6c83ed52 | 9211 | |
52dc124a | 9212 | sig_type |
6c83ed52 | 9213 | = lookup_signatured_type_at_offset (dwarf2_per_objfile->objfile, |
3019eac3 | 9214 | cu->per_cu->info_or_types_section, |
6c83ed52 | 9215 | cu->per_cu->offset); |
3019eac3 DE |
9216 | gdb_assert (sig_type->type_offset_in_section.sect_off != 0); |
9217 | if (sig_type->type_offset_in_section.sect_off != die->offset.sect_off) | |
6c83ed52 TT |
9218 | return; |
9219 | } | |
9220 | ||
f792889a | 9221 | new_symbol (die, this_type, cu); |
c906108c SS |
9222 | } |
9223 | ||
9224 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
9225 | the DIE's type field. For now, this only handles one dimensional | |
9226 | arrays. */ | |
9227 | ||
f792889a | 9228 | static struct type * |
e7c27a73 | 9229 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 9230 | { |
e7c27a73 | 9231 | struct objfile *objfile = cu->objfile; |
c906108c | 9232 | struct die_info *child_die; |
7e314c57 | 9233 | struct type *type; |
c906108c SS |
9234 | struct type *element_type, *range_type, *index_type; |
9235 | struct type **range_types = NULL; | |
9236 | struct attribute *attr; | |
9237 | int ndim = 0; | |
9238 | struct cleanup *back_to; | |
39cbfefa | 9239 | char *name; |
c906108c | 9240 | |
e7c27a73 | 9241 | element_type = die_type (die, cu); |
c906108c | 9242 | |
7e314c57 JK |
9243 | /* The die_type call above may have already set the type for this DIE. */ |
9244 | type = get_die_type (die, cu); | |
9245 | if (type) | |
9246 | return type; | |
9247 | ||
c906108c SS |
9248 | /* Irix 6.2 native cc creates array types without children for |
9249 | arrays with unspecified length. */ | |
639d11d3 | 9250 | if (die->child == NULL) |
c906108c | 9251 | { |
46bf5051 | 9252 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 9253 | range_type = create_range_type (NULL, index_type, 0, -1); |
f792889a DJ |
9254 | type = create_array_type (NULL, element_type, range_type); |
9255 | return set_die_type (die, type, cu); | |
c906108c SS |
9256 | } |
9257 | ||
9258 | back_to = make_cleanup (null_cleanup, NULL); | |
639d11d3 | 9259 | child_die = die->child; |
c906108c SS |
9260 | while (child_die && child_die->tag) |
9261 | { | |
9262 | if (child_die->tag == DW_TAG_subrange_type) | |
9263 | { | |
f792889a | 9264 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 9265 | |
f792889a | 9266 | if (child_type != NULL) |
a02abb62 | 9267 | { |
0963b4bd MS |
9268 | /* The range type was succesfully read. Save it for the |
9269 | array type creation. */ | |
a02abb62 JB |
9270 | if ((ndim % DW_FIELD_ALLOC_CHUNK) == 0) |
9271 | { | |
9272 | range_types = (struct type **) | |
9273 | xrealloc (range_types, (ndim + DW_FIELD_ALLOC_CHUNK) | |
9274 | * sizeof (struct type *)); | |
9275 | if (ndim == 0) | |
9276 | make_cleanup (free_current_contents, &range_types); | |
9277 | } | |
f792889a | 9278 | range_types[ndim++] = child_type; |
a02abb62 | 9279 | } |
c906108c SS |
9280 | } |
9281 | child_die = sibling_die (child_die); | |
9282 | } | |
9283 | ||
9284 | /* Dwarf2 dimensions are output from left to right, create the | |
9285 | necessary array types in backwards order. */ | |
7ca2d3a3 | 9286 | |
c906108c | 9287 | type = element_type; |
7ca2d3a3 DL |
9288 | |
9289 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
9290 | { | |
9291 | int i = 0; | |
9a619af0 | 9292 | |
7ca2d3a3 DL |
9293 | while (i < ndim) |
9294 | type = create_array_type (NULL, type, range_types[i++]); | |
9295 | } | |
9296 | else | |
9297 | { | |
9298 | while (ndim-- > 0) | |
9299 | type = create_array_type (NULL, type, range_types[ndim]); | |
9300 | } | |
c906108c | 9301 | |
f5f8a009 EZ |
9302 | /* Understand Dwarf2 support for vector types (like they occur on |
9303 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
9304 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
9305 | custom vendor extension. The main difference between a regular | |
9306 | array and the vector variant is that vectors are passed by value | |
9307 | to functions. */ | |
e142c38c | 9308 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 | 9309 | if (attr) |
ea37ba09 | 9310 | make_vector_type (type); |
f5f8a009 | 9311 | |
dbc98a8b KW |
9312 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
9313 | implementation may choose to implement triple vectors using this | |
9314 | attribute. */ | |
9315 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
9316 | if (attr) | |
9317 | { | |
9318 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
9319 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
9320 | else | |
3e43a32a MS |
9321 | complaint (&symfile_complaints, |
9322 | _("DW_AT_byte_size for array type smaller " | |
9323 | "than the total size of elements")); | |
dbc98a8b KW |
9324 | } |
9325 | ||
39cbfefa DJ |
9326 | name = dwarf2_name (die, cu); |
9327 | if (name) | |
9328 | TYPE_NAME (type) = name; | |
6e70227d | 9329 | |
0963b4bd | 9330 | /* Install the type in the die. */ |
7e314c57 JK |
9331 | set_die_type (die, type, cu); |
9332 | ||
9333 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
9334 | set_descriptive_type (type, die, cu); |
9335 | ||
c906108c SS |
9336 | do_cleanups (back_to); |
9337 | ||
7e314c57 | 9338 | return type; |
c906108c SS |
9339 | } |
9340 | ||
7ca2d3a3 | 9341 | static enum dwarf_array_dim_ordering |
6e70227d | 9342 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
9343 | { |
9344 | struct attribute *attr; | |
9345 | ||
9346 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
9347 | ||
9348 | if (attr) return DW_SND (attr); | |
9349 | ||
0963b4bd MS |
9350 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
9351 | opposite order to the dwarf2 specification, but data is still | |
9352 | laid out as per normal fortran. | |
7ca2d3a3 | 9353 | |
0963b4bd MS |
9354 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
9355 | version checking. */ | |
7ca2d3a3 | 9356 | |
905e0470 PM |
9357 | if (cu->language == language_fortran |
9358 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
9359 | { |
9360 | return DW_ORD_row_major; | |
9361 | } | |
9362 | ||
6e70227d | 9363 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
9364 | { |
9365 | case array_column_major: | |
9366 | return DW_ORD_col_major; | |
9367 | case array_row_major: | |
9368 | default: | |
9369 | return DW_ORD_row_major; | |
9370 | }; | |
9371 | } | |
9372 | ||
72019c9c | 9373 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 9374 | the DIE's type field. */ |
72019c9c | 9375 | |
f792889a | 9376 | static struct type * |
72019c9c GM |
9377 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
9378 | { | |
7e314c57 JK |
9379 | struct type *domain_type, *set_type; |
9380 | struct attribute *attr; | |
f792889a | 9381 | |
7e314c57 JK |
9382 | domain_type = die_type (die, cu); |
9383 | ||
9384 | /* The die_type call above may have already set the type for this DIE. */ | |
9385 | set_type = get_die_type (die, cu); | |
9386 | if (set_type) | |
9387 | return set_type; | |
9388 | ||
9389 | set_type = create_set_type (NULL, domain_type); | |
9390 | ||
9391 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
d09039dd PM |
9392 | if (attr) |
9393 | TYPE_LENGTH (set_type) = DW_UNSND (attr); | |
7e314c57 | 9394 | |
f792889a | 9395 | return set_die_type (die, set_type, cu); |
72019c9c | 9396 | } |
7ca2d3a3 | 9397 | |
c906108c SS |
9398 | /* First cut: install each common block member as a global variable. */ |
9399 | ||
9400 | static void | |
e7c27a73 | 9401 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
9402 | { |
9403 | struct die_info *child_die; | |
9404 | struct attribute *attr; | |
9405 | struct symbol *sym; | |
9406 | CORE_ADDR base = (CORE_ADDR) 0; | |
9407 | ||
e142c38c | 9408 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
9409 | if (attr) |
9410 | { | |
0963b4bd | 9411 | /* Support the .debug_loc offsets. */ |
8e19ed76 PS |
9412 | if (attr_form_is_block (attr)) |
9413 | { | |
e7c27a73 | 9414 | base = decode_locdesc (DW_BLOCK (attr), cu); |
8e19ed76 | 9415 | } |
3690dd37 | 9416 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 9417 | { |
4d3c2250 | 9418 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
9419 | } |
9420 | else | |
9421 | { | |
4d3c2250 KB |
9422 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
9423 | "common block member"); | |
8e19ed76 | 9424 | } |
c906108c | 9425 | } |
639d11d3 | 9426 | if (die->child != NULL) |
c906108c | 9427 | { |
639d11d3 | 9428 | child_die = die->child; |
c906108c SS |
9429 | while (child_die && child_die->tag) |
9430 | { | |
74ac6d43 TT |
9431 | LONGEST offset; |
9432 | ||
e7c27a73 | 9433 | sym = new_symbol (child_die, NULL, cu); |
e8d28ef4 TT |
9434 | if (sym != NULL |
9435 | && handle_data_member_location (child_die, cu, &offset)) | |
c906108c | 9436 | { |
74ac6d43 | 9437 | SYMBOL_VALUE_ADDRESS (sym) = base + offset; |
c906108c SS |
9438 | add_symbol_to_list (sym, &global_symbols); |
9439 | } | |
9440 | child_die = sibling_die (child_die); | |
9441 | } | |
9442 | } | |
9443 | } | |
9444 | ||
0114d602 | 9445 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 9446 | |
0114d602 DJ |
9447 | static struct type * |
9448 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 9449 | { |
e7c27a73 | 9450 | struct objfile *objfile = cu->objfile; |
0114d602 | 9451 | const char *previous_prefix, *name; |
9219021c | 9452 | int is_anonymous; |
0114d602 DJ |
9453 | struct type *type; |
9454 | ||
9455 | /* For extensions, reuse the type of the original namespace. */ | |
9456 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
9457 | { | |
9458 | struct die_info *ext_die; | |
9459 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 9460 | |
0114d602 DJ |
9461 | ext_die = dwarf2_extension (die, &ext_cu); |
9462 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
9463 | |
9464 | /* EXT_CU may not be the same as CU. | |
9465 | Ensure TYPE is recorded in CU's type_hash table. */ | |
0114d602 DJ |
9466 | return set_die_type (die, type, cu); |
9467 | } | |
9219021c | 9468 | |
e142c38c | 9469 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
9470 | |
9471 | /* Now build the name of the current namespace. */ | |
9472 | ||
0114d602 DJ |
9473 | previous_prefix = determine_prefix (die, cu); |
9474 | if (previous_prefix[0] != '\0') | |
9475 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 9476 | previous_prefix, name, 0, cu); |
0114d602 DJ |
9477 | |
9478 | /* Create the type. */ | |
9479 | type = init_type (TYPE_CODE_NAMESPACE, 0, 0, NULL, | |
9480 | objfile); | |
9481 | TYPE_NAME (type) = (char *) name; | |
9482 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
9483 | ||
60531b24 | 9484 | return set_die_type (die, type, cu); |
0114d602 DJ |
9485 | } |
9486 | ||
9487 | /* Read a C++ namespace. */ | |
9488 | ||
9489 | static void | |
9490 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
9491 | { | |
9492 | struct objfile *objfile = cu->objfile; | |
0114d602 | 9493 | int is_anonymous; |
9219021c | 9494 | |
5c4e30ca DC |
9495 | /* Add a symbol associated to this if we haven't seen the namespace |
9496 | before. Also, add a using directive if it's an anonymous | |
9497 | namespace. */ | |
9219021c | 9498 | |
f2f0e013 | 9499 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
9500 | { |
9501 | struct type *type; | |
9502 | ||
0114d602 | 9503 | type = read_type_die (die, cu); |
e7c27a73 | 9504 | new_symbol (die, type, cu); |
5c4e30ca | 9505 | |
e8e80198 | 9506 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 9507 | if (is_anonymous) |
0114d602 DJ |
9508 | { |
9509 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 9510 | |
c0cc3a76 | 9511 | cp_add_using_directive (previous_prefix, TYPE_NAME (type), NULL, |
32019081 | 9512 | NULL, NULL, &objfile->objfile_obstack); |
0114d602 | 9513 | } |
5c4e30ca | 9514 | } |
9219021c | 9515 | |
639d11d3 | 9516 | if (die->child != NULL) |
d9fa45fe | 9517 | { |
639d11d3 | 9518 | struct die_info *child_die = die->child; |
6e70227d | 9519 | |
d9fa45fe DC |
9520 | while (child_die && child_die->tag) |
9521 | { | |
e7c27a73 | 9522 | process_die (child_die, cu); |
d9fa45fe DC |
9523 | child_die = sibling_die (child_die); |
9524 | } | |
9525 | } | |
38d518c9 EZ |
9526 | } |
9527 | ||
f55ee35c JK |
9528 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
9529 | imported module. Still we need that type as local Fortran "use ... only" | |
9530 | declaration imports depend on the created type in determine_prefix. */ | |
9531 | ||
9532 | static struct type * | |
9533 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
9534 | { | |
9535 | struct objfile *objfile = cu->objfile; | |
9536 | char *module_name; | |
9537 | struct type *type; | |
9538 | ||
9539 | module_name = dwarf2_name (die, cu); | |
9540 | if (!module_name) | |
3e43a32a MS |
9541 | complaint (&symfile_complaints, |
9542 | _("DW_TAG_module has no name, offset 0x%x"), | |
b64f50a1 | 9543 | die->offset.sect_off); |
f55ee35c JK |
9544 | type = init_type (TYPE_CODE_MODULE, 0, 0, module_name, objfile); |
9545 | ||
9546 | /* determine_prefix uses TYPE_TAG_NAME. */ | |
9547 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
9548 | ||
9549 | return set_die_type (die, type, cu); | |
9550 | } | |
9551 | ||
5d7cb8df JK |
9552 | /* Read a Fortran module. */ |
9553 | ||
9554 | static void | |
9555 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
9556 | { | |
9557 | struct die_info *child_die = die->child; | |
9558 | ||
5d7cb8df JK |
9559 | while (child_die && child_die->tag) |
9560 | { | |
9561 | process_die (child_die, cu); | |
9562 | child_die = sibling_die (child_die); | |
9563 | } | |
9564 | } | |
9565 | ||
38d518c9 EZ |
9566 | /* Return the name of the namespace represented by DIE. Set |
9567 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
9568 | namespace. */ | |
9569 | ||
9570 | static const char * | |
e142c38c | 9571 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
9572 | { |
9573 | struct die_info *current_die; | |
9574 | const char *name = NULL; | |
9575 | ||
9576 | /* Loop through the extensions until we find a name. */ | |
9577 | ||
9578 | for (current_die = die; | |
9579 | current_die != NULL; | |
f2f0e013 | 9580 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 9581 | { |
e142c38c | 9582 | name = dwarf2_name (current_die, cu); |
38d518c9 EZ |
9583 | if (name != NULL) |
9584 | break; | |
9585 | } | |
9586 | ||
9587 | /* Is it an anonymous namespace? */ | |
9588 | ||
9589 | *is_anonymous = (name == NULL); | |
9590 | if (*is_anonymous) | |
2b1dbab0 | 9591 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
9592 | |
9593 | return name; | |
d9fa45fe DC |
9594 | } |
9595 | ||
c906108c SS |
9596 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
9597 | the user defined type vector. */ | |
9598 | ||
f792889a | 9599 | static struct type * |
e7c27a73 | 9600 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 9601 | { |
5e2b427d | 9602 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); |
e7c27a73 | 9603 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 9604 | struct type *type; |
8b2dbe47 KB |
9605 | struct attribute *attr_byte_size; |
9606 | struct attribute *attr_address_class; | |
9607 | int byte_size, addr_class; | |
7e314c57 JK |
9608 | struct type *target_type; |
9609 | ||
9610 | target_type = die_type (die, cu); | |
c906108c | 9611 | |
7e314c57 JK |
9612 | /* The die_type call above may have already set the type for this DIE. */ |
9613 | type = get_die_type (die, cu); | |
9614 | if (type) | |
9615 | return type; | |
9616 | ||
9617 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 9618 | |
e142c38c | 9619 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
9620 | if (attr_byte_size) |
9621 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 9622 | else |
8b2dbe47 KB |
9623 | byte_size = cu_header->addr_size; |
9624 | ||
e142c38c | 9625 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
9626 | if (attr_address_class) |
9627 | addr_class = DW_UNSND (attr_address_class); | |
9628 | else | |
9629 | addr_class = DW_ADDR_none; | |
9630 | ||
9631 | /* If the pointer size or address class is different than the | |
9632 | default, create a type variant marked as such and set the | |
9633 | length accordingly. */ | |
9634 | if (TYPE_LENGTH (type) != byte_size || addr_class != DW_ADDR_none) | |
c906108c | 9635 | { |
5e2b427d | 9636 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
9637 | { |
9638 | int type_flags; | |
9639 | ||
849957d9 | 9640 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 9641 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
9642 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
9643 | == 0); | |
8b2dbe47 KB |
9644 | type = make_type_with_address_space (type, type_flags); |
9645 | } | |
9646 | else if (TYPE_LENGTH (type) != byte_size) | |
9647 | { | |
3e43a32a MS |
9648 | complaint (&symfile_complaints, |
9649 | _("invalid pointer size %d"), byte_size); | |
8b2dbe47 | 9650 | } |
6e70227d | 9651 | else |
9a619af0 MS |
9652 | { |
9653 | /* Should we also complain about unhandled address classes? */ | |
9654 | } | |
c906108c | 9655 | } |
8b2dbe47 KB |
9656 | |
9657 | TYPE_LENGTH (type) = byte_size; | |
f792889a | 9658 | return set_die_type (die, type, cu); |
c906108c SS |
9659 | } |
9660 | ||
9661 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
9662 | the user defined type vector. */ | |
9663 | ||
f792889a | 9664 | static struct type * |
e7c27a73 | 9665 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
9666 | { |
9667 | struct type *type; | |
9668 | struct type *to_type; | |
9669 | struct type *domain; | |
9670 | ||
e7c27a73 DJ |
9671 | to_type = die_type (die, cu); |
9672 | domain = die_containing_type (die, cu); | |
0d5de010 | 9673 | |
7e314c57 JK |
9674 | /* The calls above may have already set the type for this DIE. */ |
9675 | type = get_die_type (die, cu); | |
9676 | if (type) | |
9677 | return type; | |
9678 | ||
0d5de010 DJ |
9679 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) |
9680 | type = lookup_methodptr_type (to_type); | |
9681 | else | |
9682 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 9683 | |
f792889a | 9684 | return set_die_type (die, type, cu); |
c906108c SS |
9685 | } |
9686 | ||
9687 | /* Extract all information from a DW_TAG_reference_type DIE and add to | |
9688 | the user defined type vector. */ | |
9689 | ||
f792889a | 9690 | static struct type * |
e7c27a73 | 9691 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 9692 | { |
e7c27a73 | 9693 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 9694 | struct type *type, *target_type; |
c906108c SS |
9695 | struct attribute *attr; |
9696 | ||
7e314c57 JK |
9697 | target_type = die_type (die, cu); |
9698 | ||
9699 | /* The die_type call above may have already set the type for this DIE. */ | |
9700 | type = get_die_type (die, cu); | |
9701 | if (type) | |
9702 | return type; | |
9703 | ||
9704 | type = lookup_reference_type (target_type); | |
e142c38c | 9705 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
9706 | if (attr) |
9707 | { | |
9708 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
9709 | } | |
9710 | else | |
9711 | { | |
107d2387 | 9712 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 9713 | } |
f792889a | 9714 | return set_die_type (die, type, cu); |
c906108c SS |
9715 | } |
9716 | ||
f792889a | 9717 | static struct type * |
e7c27a73 | 9718 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 9719 | { |
f792889a | 9720 | struct type *base_type, *cv_type; |
c906108c | 9721 | |
e7c27a73 | 9722 | base_type = die_type (die, cu); |
7e314c57 JK |
9723 | |
9724 | /* The die_type call above may have already set the type for this DIE. */ | |
9725 | cv_type = get_die_type (die, cu); | |
9726 | if (cv_type) | |
9727 | return cv_type; | |
9728 | ||
2f608a3a KW |
9729 | /* In case the const qualifier is applied to an array type, the element type |
9730 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
9731 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
9732 | { | |
9733 | struct type *el_type, *inner_array; | |
9734 | ||
9735 | base_type = copy_type (base_type); | |
9736 | inner_array = base_type; | |
9737 | ||
9738 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) | |
9739 | { | |
9740 | TYPE_TARGET_TYPE (inner_array) = | |
9741 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
9742 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
9743 | } | |
9744 | ||
9745 | el_type = TYPE_TARGET_TYPE (inner_array); | |
9746 | TYPE_TARGET_TYPE (inner_array) = | |
9747 | make_cv_type (1, TYPE_VOLATILE (el_type), el_type, NULL); | |
9748 | ||
9749 | return set_die_type (die, base_type, cu); | |
9750 | } | |
9751 | ||
f792889a DJ |
9752 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
9753 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
9754 | } |
9755 | ||
f792889a | 9756 | static struct type * |
e7c27a73 | 9757 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 9758 | { |
f792889a | 9759 | struct type *base_type, *cv_type; |
c906108c | 9760 | |
e7c27a73 | 9761 | base_type = die_type (die, cu); |
7e314c57 JK |
9762 | |
9763 | /* The die_type call above may have already set the type for this DIE. */ | |
9764 | cv_type = get_die_type (die, cu); | |
9765 | if (cv_type) | |
9766 | return cv_type; | |
9767 | ||
f792889a DJ |
9768 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
9769 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
9770 | } |
9771 | ||
9772 | /* Extract all information from a DW_TAG_string_type DIE and add to | |
9773 | the user defined type vector. It isn't really a user defined type, | |
9774 | but it behaves like one, with other DIE's using an AT_user_def_type | |
9775 | attribute to reference it. */ | |
9776 | ||
f792889a | 9777 | static struct type * |
e7c27a73 | 9778 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 9779 | { |
e7c27a73 | 9780 | struct objfile *objfile = cu->objfile; |
3b7538c0 | 9781 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
9782 | struct type *type, *range_type, *index_type, *char_type; |
9783 | struct attribute *attr; | |
9784 | unsigned int length; | |
9785 | ||
e142c38c | 9786 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
9787 | if (attr) |
9788 | { | |
9789 | length = DW_UNSND (attr); | |
9790 | } | |
9791 | else | |
9792 | { | |
0963b4bd | 9793 | /* Check for the DW_AT_byte_size attribute. */ |
e142c38c | 9794 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
9795 | if (attr) |
9796 | { | |
9797 | length = DW_UNSND (attr); | |
9798 | } | |
9799 | else | |
9800 | { | |
9801 | length = 1; | |
9802 | } | |
c906108c | 9803 | } |
6ccb9162 | 9804 | |
46bf5051 | 9805 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 9806 | range_type = create_range_type (NULL, index_type, 1, length); |
3b7538c0 UW |
9807 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
9808 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 9809 | |
f792889a | 9810 | return set_die_type (die, type, cu); |
c906108c SS |
9811 | } |
9812 | ||
9813 | /* Handle DIES due to C code like: | |
9814 | ||
9815 | struct foo | |
c5aa993b JM |
9816 | { |
9817 | int (*funcp)(int a, long l); | |
9818 | int b; | |
9819 | }; | |
c906108c | 9820 | |
0963b4bd | 9821 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 9822 | |
f792889a | 9823 | static struct type * |
e7c27a73 | 9824 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 9825 | { |
bb5ed363 | 9826 | struct objfile *objfile = cu->objfile; |
0963b4bd MS |
9827 | struct type *type; /* Type that this function returns. */ |
9828 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
9829 | struct attribute *attr; |
9830 | ||
e7c27a73 | 9831 | type = die_type (die, cu); |
7e314c57 JK |
9832 | |
9833 | /* The die_type call above may have already set the type for this DIE. */ | |
9834 | ftype = get_die_type (die, cu); | |
9835 | if (ftype) | |
9836 | return ftype; | |
9837 | ||
0c8b41f1 | 9838 | ftype = lookup_function_type (type); |
c906108c | 9839 | |
5b8101ae | 9840 | /* All functions in C++, Pascal and Java have prototypes. */ |
e142c38c | 9841 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); |
c906108c | 9842 | if ((attr && (DW_UNSND (attr) != 0)) |
987504bb | 9843 | || cu->language == language_cplus |
5b8101ae PM |
9844 | || cu->language == language_java |
9845 | || cu->language == language_pascal) | |
876cecd0 | 9846 | TYPE_PROTOTYPED (ftype) = 1; |
a6c727b2 DJ |
9847 | else if (producer_is_realview (cu->producer)) |
9848 | /* RealView does not emit DW_AT_prototyped. We can not | |
9849 | distinguish prototyped and unprototyped functions; default to | |
9850 | prototyped, since that is more common in modern code (and | |
9851 | RealView warns about unprototyped functions). */ | |
9852 | TYPE_PROTOTYPED (ftype) = 1; | |
c906108c | 9853 | |
c055b101 CV |
9854 | /* Store the calling convention in the type if it's available in |
9855 | the subroutine die. Otherwise set the calling convention to | |
9856 | the default value DW_CC_normal. */ | |
9857 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
54fcddd0 UW |
9858 | if (attr) |
9859 | TYPE_CALLING_CONVENTION (ftype) = DW_UNSND (attr); | |
9860 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) | |
9861 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
9862 | else | |
9863 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 GM |
9864 | |
9865 | /* We need to add the subroutine type to the die immediately so | |
9866 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 9867 | declared as the same subroutine type. */ |
76c10ea2 | 9868 | set_die_type (die, ftype, cu); |
6e70227d | 9869 | |
639d11d3 | 9870 | if (die->child != NULL) |
c906108c | 9871 | { |
bb5ed363 | 9872 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 9873 | struct die_info *child_die; |
8072405b | 9874 | int nparams, iparams; |
c906108c SS |
9875 | |
9876 | /* Count the number of parameters. | |
9877 | FIXME: GDB currently ignores vararg functions, but knows about | |
9878 | vararg member functions. */ | |
8072405b | 9879 | nparams = 0; |
639d11d3 | 9880 | child_die = die->child; |
c906108c SS |
9881 | while (child_die && child_die->tag) |
9882 | { | |
9883 | if (child_die->tag == DW_TAG_formal_parameter) | |
9884 | nparams++; | |
9885 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 9886 | TYPE_VARARGS (ftype) = 1; |
c906108c SS |
9887 | child_die = sibling_die (child_die); |
9888 | } | |
9889 | ||
9890 | /* Allocate storage for parameters and fill them in. */ | |
9891 | TYPE_NFIELDS (ftype) = nparams; | |
9892 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 9893 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 9894 | |
8072405b JK |
9895 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
9896 | even if we error out during the parameters reading below. */ | |
9897 | for (iparams = 0; iparams < nparams; iparams++) | |
9898 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
9899 | ||
9900 | iparams = 0; | |
639d11d3 | 9901 | child_die = die->child; |
c906108c SS |
9902 | while (child_die && child_die->tag) |
9903 | { | |
9904 | if (child_die->tag == DW_TAG_formal_parameter) | |
9905 | { | |
3ce3b1ba PA |
9906 | struct type *arg_type; |
9907 | ||
9908 | /* DWARF version 2 has no clean way to discern C++ | |
9909 | static and non-static member functions. G++ helps | |
9910 | GDB by marking the first parameter for non-static | |
9911 | member functions (which is the this pointer) as | |
9912 | artificial. We pass this information to | |
9913 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
9914 | ||
9915 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
9916 | 4.5 does not yet generate. */ | |
e142c38c | 9917 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
9918 | if (attr) |
9919 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
9920 | else | |
418835cc KS |
9921 | { |
9922 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; | |
9923 | ||
9924 | /* GCC/43521: In java, the formal parameter | |
9925 | "this" is sometimes not marked with DW_AT_artificial. */ | |
9926 | if (cu->language == language_java) | |
9927 | { | |
9928 | const char *name = dwarf2_name (child_die, cu); | |
9a619af0 | 9929 | |
418835cc KS |
9930 | if (name && !strcmp (name, "this")) |
9931 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 1; | |
9932 | } | |
9933 | } | |
3ce3b1ba PA |
9934 | arg_type = die_type (child_die, cu); |
9935 | ||
9936 | /* RealView does not mark THIS as const, which the testsuite | |
9937 | expects. GCC marks THIS as const in method definitions, | |
9938 | but not in the class specifications (GCC PR 43053). */ | |
9939 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
9940 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
9941 | { | |
9942 | int is_this = 0; | |
9943 | struct dwarf2_cu *arg_cu = cu; | |
9944 | const char *name = dwarf2_name (child_die, cu); | |
9945 | ||
9946 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
9947 | if (attr) | |
9948 | { | |
9949 | /* If the compiler emits this, use it. */ | |
9950 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
9951 | is_this = 1; | |
9952 | } | |
9953 | else if (name && strcmp (name, "this") == 0) | |
9954 | /* Function definitions will have the argument names. */ | |
9955 | is_this = 1; | |
9956 | else if (name == NULL && iparams == 0) | |
9957 | /* Declarations may not have the names, so like | |
9958 | elsewhere in GDB, assume an artificial first | |
9959 | argument is "this". */ | |
9960 | is_this = 1; | |
9961 | ||
9962 | if (is_this) | |
9963 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
9964 | arg_type, 0); | |
9965 | } | |
9966 | ||
9967 | TYPE_FIELD_TYPE (ftype, iparams) = arg_type; | |
c906108c SS |
9968 | iparams++; |
9969 | } | |
9970 | child_die = sibling_die (child_die); | |
9971 | } | |
9972 | } | |
9973 | ||
76c10ea2 | 9974 | return ftype; |
c906108c SS |
9975 | } |
9976 | ||
f792889a | 9977 | static struct type * |
e7c27a73 | 9978 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 9979 | { |
e7c27a73 | 9980 | struct objfile *objfile = cu->objfile; |
0114d602 | 9981 | const char *name = NULL; |
3c8e0968 | 9982 | struct type *this_type, *target_type; |
c906108c | 9983 | |
94af9270 | 9984 | name = dwarf2_full_name (NULL, die, cu); |
f792889a | 9985 | this_type = init_type (TYPE_CODE_TYPEDEF, 0, |
0114d602 DJ |
9986 | TYPE_FLAG_TARGET_STUB, NULL, objfile); |
9987 | TYPE_NAME (this_type) = (char *) name; | |
f792889a | 9988 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
9989 | target_type = die_type (die, cu); |
9990 | if (target_type != this_type) | |
9991 | TYPE_TARGET_TYPE (this_type) = target_type; | |
9992 | else | |
9993 | { | |
9994 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
9995 | spec and cause infinite loops in GDB. */ | |
9996 | complaint (&symfile_complaints, | |
9997 | _("Self-referential DW_TAG_typedef " | |
9998 | "- DIE at 0x%x [in module %s]"), | |
b64f50a1 | 9999 | die->offset.sect_off, objfile->name); |
3c8e0968 DE |
10000 | TYPE_TARGET_TYPE (this_type) = NULL; |
10001 | } | |
f792889a | 10002 | return this_type; |
c906108c SS |
10003 | } |
10004 | ||
10005 | /* Find a representation of a given base type and install | |
10006 | it in the TYPE field of the die. */ | |
10007 | ||
f792889a | 10008 | static struct type * |
e7c27a73 | 10009 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10010 | { |
e7c27a73 | 10011 | struct objfile *objfile = cu->objfile; |
c906108c SS |
10012 | struct type *type; |
10013 | struct attribute *attr; | |
10014 | int encoding = 0, size = 0; | |
39cbfefa | 10015 | char *name; |
6ccb9162 UW |
10016 | enum type_code code = TYPE_CODE_INT; |
10017 | int type_flags = 0; | |
10018 | struct type *target_type = NULL; | |
c906108c | 10019 | |
e142c38c | 10020 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
10021 | if (attr) |
10022 | { | |
10023 | encoding = DW_UNSND (attr); | |
10024 | } | |
e142c38c | 10025 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
10026 | if (attr) |
10027 | { | |
10028 | size = DW_UNSND (attr); | |
10029 | } | |
39cbfefa | 10030 | name = dwarf2_name (die, cu); |
6ccb9162 | 10031 | if (!name) |
c906108c | 10032 | { |
6ccb9162 UW |
10033 | complaint (&symfile_complaints, |
10034 | _("DW_AT_name missing from DW_TAG_base_type")); | |
c906108c | 10035 | } |
6ccb9162 UW |
10036 | |
10037 | switch (encoding) | |
c906108c | 10038 | { |
6ccb9162 UW |
10039 | case DW_ATE_address: |
10040 | /* Turn DW_ATE_address into a void * pointer. */ | |
10041 | code = TYPE_CODE_PTR; | |
10042 | type_flags |= TYPE_FLAG_UNSIGNED; | |
10043 | target_type = init_type (TYPE_CODE_VOID, 1, 0, NULL, objfile); | |
10044 | break; | |
10045 | case DW_ATE_boolean: | |
10046 | code = TYPE_CODE_BOOL; | |
10047 | type_flags |= TYPE_FLAG_UNSIGNED; | |
10048 | break; | |
10049 | case DW_ATE_complex_float: | |
10050 | code = TYPE_CODE_COMPLEX; | |
10051 | target_type = init_type (TYPE_CODE_FLT, size / 2, 0, NULL, objfile); | |
10052 | break; | |
10053 | case DW_ATE_decimal_float: | |
10054 | code = TYPE_CODE_DECFLOAT; | |
10055 | break; | |
10056 | case DW_ATE_float: | |
10057 | code = TYPE_CODE_FLT; | |
10058 | break; | |
10059 | case DW_ATE_signed: | |
10060 | break; | |
10061 | case DW_ATE_unsigned: | |
10062 | type_flags |= TYPE_FLAG_UNSIGNED; | |
3b2b8fea TT |
10063 | if (cu->language == language_fortran |
10064 | && name | |
10065 | && strncmp (name, "character(", sizeof ("character(") - 1) == 0) | |
10066 | code = TYPE_CODE_CHAR; | |
6ccb9162 UW |
10067 | break; |
10068 | case DW_ATE_signed_char: | |
6e70227d | 10069 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
10070 | || cu->language == language_pascal |
10071 | || cu->language == language_fortran) | |
6ccb9162 UW |
10072 | code = TYPE_CODE_CHAR; |
10073 | break; | |
10074 | case DW_ATE_unsigned_char: | |
868a0084 | 10075 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
10076 | || cu->language == language_pascal |
10077 | || cu->language == language_fortran) | |
6ccb9162 UW |
10078 | code = TYPE_CODE_CHAR; |
10079 | type_flags |= TYPE_FLAG_UNSIGNED; | |
10080 | break; | |
75079b2b TT |
10081 | case DW_ATE_UTF: |
10082 | /* We just treat this as an integer and then recognize the | |
10083 | type by name elsewhere. */ | |
10084 | break; | |
10085 | ||
6ccb9162 UW |
10086 | default: |
10087 | complaint (&symfile_complaints, _("unsupported DW_AT_encoding: '%s'"), | |
10088 | dwarf_type_encoding_name (encoding)); | |
10089 | break; | |
c906108c | 10090 | } |
6ccb9162 | 10091 | |
0114d602 DJ |
10092 | type = init_type (code, size, type_flags, NULL, objfile); |
10093 | TYPE_NAME (type) = name; | |
6ccb9162 UW |
10094 | TYPE_TARGET_TYPE (type) = target_type; |
10095 | ||
0114d602 | 10096 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 10097 | TYPE_NOSIGN (type) = 1; |
0114d602 | 10098 | |
f792889a | 10099 | return set_die_type (die, type, cu); |
c906108c SS |
10100 | } |
10101 | ||
a02abb62 JB |
10102 | /* Read the given DW_AT_subrange DIE. */ |
10103 | ||
f792889a | 10104 | static struct type * |
a02abb62 JB |
10105 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
10106 | { | |
10107 | struct type *base_type; | |
10108 | struct type *range_type; | |
10109 | struct attribute *attr; | |
4fae6e18 JK |
10110 | LONGEST low, high; |
10111 | int low_default_is_valid; | |
39cbfefa | 10112 | char *name; |
43bbcdc2 | 10113 | LONGEST negative_mask; |
e77813c8 | 10114 | |
a02abb62 | 10115 | base_type = die_type (die, cu); |
953ac07e JK |
10116 | /* Preserve BASE_TYPE's original type, just set its LENGTH. */ |
10117 | check_typedef (base_type); | |
a02abb62 | 10118 | |
7e314c57 JK |
10119 | /* The die_type call above may have already set the type for this DIE. */ |
10120 | range_type = get_die_type (die, cu); | |
10121 | if (range_type) | |
10122 | return range_type; | |
10123 | ||
4fae6e18 JK |
10124 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
10125 | omitting DW_AT_lower_bound. */ | |
10126 | switch (cu->language) | |
6e70227d | 10127 | { |
4fae6e18 JK |
10128 | case language_c: |
10129 | case language_cplus: | |
10130 | low = 0; | |
10131 | low_default_is_valid = 1; | |
10132 | break; | |
10133 | case language_fortran: | |
10134 | low = 1; | |
10135 | low_default_is_valid = 1; | |
10136 | break; | |
10137 | case language_d: | |
10138 | case language_java: | |
10139 | case language_objc: | |
10140 | low = 0; | |
10141 | low_default_is_valid = (cu->header.version >= 4); | |
10142 | break; | |
10143 | case language_ada: | |
10144 | case language_m2: | |
10145 | case language_pascal: | |
a02abb62 | 10146 | low = 1; |
4fae6e18 JK |
10147 | low_default_is_valid = (cu->header.version >= 4); |
10148 | break; | |
10149 | default: | |
10150 | low = 0; | |
10151 | low_default_is_valid = 0; | |
10152 | break; | |
a02abb62 JB |
10153 | } |
10154 | ||
dd5e6932 DJ |
10155 | /* FIXME: For variable sized arrays either of these could be |
10156 | a variable rather than a constant value. We'll allow it, | |
10157 | but we don't know how to handle it. */ | |
e142c38c | 10158 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 | 10159 | if (attr) |
4fae6e18 JK |
10160 | low = dwarf2_get_attr_constant_value (attr, low); |
10161 | else if (!low_default_is_valid) | |
10162 | complaint (&symfile_complaints, _("Missing DW_AT_lower_bound " | |
10163 | "- DIE at 0x%x [in module %s]"), | |
10164 | die->offset.sect_off, cu->objfile->name); | |
a02abb62 | 10165 | |
e142c38c | 10166 | attr = dwarf2_attr (die, DW_AT_upper_bound, cu); |
a02abb62 | 10167 | if (attr) |
6e70227d | 10168 | { |
d48323d8 | 10169 | if (attr_form_is_block (attr) || is_ref_attr (attr)) |
a02abb62 JB |
10170 | { |
10171 | /* GCC encodes arrays with unspecified or dynamic length | |
e77813c8 | 10172 | with a DW_FORM_block1 attribute or a reference attribute. |
a02abb62 JB |
10173 | FIXME: GDB does not yet know how to handle dynamic |
10174 | arrays properly, treat them as arrays with unspecified | |
10175 | length for now. | |
10176 | ||
10177 | FIXME: jimb/2003-09-22: GDB does not really know | |
10178 | how to handle arrays of unspecified length | |
10179 | either; we just represent them as zero-length | |
10180 | arrays. Choose an appropriate upper bound given | |
10181 | the lower bound we've computed above. */ | |
10182 | high = low - 1; | |
10183 | } | |
10184 | else | |
10185 | high = dwarf2_get_attr_constant_value (attr, 1); | |
10186 | } | |
e77813c8 PM |
10187 | else |
10188 | { | |
10189 | attr = dwarf2_attr (die, DW_AT_count, cu); | |
10190 | if (attr) | |
10191 | { | |
10192 | int count = dwarf2_get_attr_constant_value (attr, 1); | |
10193 | high = low + count - 1; | |
10194 | } | |
c2ff108b JK |
10195 | else |
10196 | { | |
10197 | /* Unspecified array length. */ | |
10198 | high = low - 1; | |
10199 | } | |
e77813c8 PM |
10200 | } |
10201 | ||
10202 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
10203 | without specifying a base type. | |
10204 | In that case, the base type must be set to the type of | |
10205 | the lower bound, upper bound or count, in that order, if any of these | |
10206 | three attributes references an object that has a type. | |
10207 | If no base type is found, the Dwarf-2 specifications say that | |
10208 | a signed integer type of size equal to the size of an address should | |
10209 | be used. | |
10210 | For the following C code: `extern char gdb_int [];' | |
10211 | GCC produces an empty range DIE. | |
10212 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
0963b4bd | 10213 | high bound or count are not yet handled by this code. */ |
e77813c8 PM |
10214 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) |
10215 | { | |
10216 | struct objfile *objfile = cu->objfile; | |
10217 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
10218 | int addr_size = gdbarch_addr_bit (gdbarch) /8; | |
10219 | struct type *int_type = objfile_type (objfile)->builtin_int; | |
10220 | ||
10221 | /* Test "int", "long int", and "long long int" objfile types, | |
10222 | and select the first one having a size above or equal to the | |
10223 | architecture address size. */ | |
10224 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
10225 | base_type = int_type; | |
10226 | else | |
10227 | { | |
10228 | int_type = objfile_type (objfile)->builtin_long; | |
10229 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
10230 | base_type = int_type; | |
10231 | else | |
10232 | { | |
10233 | int_type = objfile_type (objfile)->builtin_long_long; | |
10234 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
10235 | base_type = int_type; | |
10236 | } | |
10237 | } | |
10238 | } | |
a02abb62 | 10239 | |
6e70227d | 10240 | negative_mask = |
43bbcdc2 PH |
10241 | (LONGEST) -1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1); |
10242 | if (!TYPE_UNSIGNED (base_type) && (low & negative_mask)) | |
10243 | low |= negative_mask; | |
10244 | if (!TYPE_UNSIGNED (base_type) && (high & negative_mask)) | |
10245 | high |= negative_mask; | |
10246 | ||
a02abb62 JB |
10247 | range_type = create_range_type (NULL, base_type, low, high); |
10248 | ||
bbb0eef6 JK |
10249 | /* Mark arrays with dynamic length at least as an array of unspecified |
10250 | length. GDB could check the boundary but before it gets implemented at | |
10251 | least allow accessing the array elements. */ | |
d48323d8 | 10252 | if (attr && attr_form_is_block (attr)) |
bbb0eef6 JK |
10253 | TYPE_HIGH_BOUND_UNDEFINED (range_type) = 1; |
10254 | ||
c2ff108b JK |
10255 | /* Ada expects an empty array on no boundary attributes. */ |
10256 | if (attr == NULL && cu->language != language_ada) | |
10257 | TYPE_HIGH_BOUND_UNDEFINED (range_type) = 1; | |
10258 | ||
39cbfefa DJ |
10259 | name = dwarf2_name (die, cu); |
10260 | if (name) | |
10261 | TYPE_NAME (range_type) = name; | |
6e70227d | 10262 | |
e142c38c | 10263 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
10264 | if (attr) |
10265 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
10266 | ||
7e314c57 JK |
10267 | set_die_type (die, range_type, cu); |
10268 | ||
10269 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
10270 | set_descriptive_type (range_type, die, cu); |
10271 | ||
7e314c57 | 10272 | return range_type; |
a02abb62 | 10273 | } |
6e70227d | 10274 | |
f792889a | 10275 | static struct type * |
81a17f79 JB |
10276 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
10277 | { | |
10278 | struct type *type; | |
81a17f79 | 10279 | |
81a17f79 JB |
10280 | /* For now, we only support the C meaning of an unspecified type: void. */ |
10281 | ||
0114d602 DJ |
10282 | type = init_type (TYPE_CODE_VOID, 0, 0, NULL, cu->objfile); |
10283 | TYPE_NAME (type) = dwarf2_name (die, cu); | |
81a17f79 | 10284 | |
f792889a | 10285 | return set_die_type (die, type, cu); |
81a17f79 | 10286 | } |
a02abb62 | 10287 | |
639d11d3 DC |
10288 | /* Read a single die and all its descendents. Set the die's sibling |
10289 | field to NULL; set other fields in the die correctly, and set all | |
10290 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
10291 | location of the info_ptr after reading all of those dies. PARENT | |
10292 | is the parent of the die in question. */ | |
10293 | ||
10294 | static struct die_info * | |
dee91e82 DE |
10295 | read_die_and_children (const struct die_reader_specs *reader, |
10296 | gdb_byte *info_ptr, | |
10297 | gdb_byte **new_info_ptr, | |
10298 | struct die_info *parent) | |
639d11d3 DC |
10299 | { |
10300 | struct die_info *die; | |
fe1b8b76 | 10301 | gdb_byte *cur_ptr; |
639d11d3 DC |
10302 | int has_children; |
10303 | ||
93311388 | 10304 | cur_ptr = read_full_die (reader, &die, info_ptr, &has_children); |
1d325ec1 DJ |
10305 | if (die == NULL) |
10306 | { | |
10307 | *new_info_ptr = cur_ptr; | |
10308 | return NULL; | |
10309 | } | |
93311388 | 10310 | store_in_ref_table (die, reader->cu); |
639d11d3 DC |
10311 | |
10312 | if (has_children) | |
348e048f | 10313 | die->child = read_die_and_siblings (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
10314 | else |
10315 | { | |
10316 | die->child = NULL; | |
10317 | *new_info_ptr = cur_ptr; | |
10318 | } | |
10319 | ||
10320 | die->sibling = NULL; | |
10321 | die->parent = parent; | |
10322 | return die; | |
10323 | } | |
10324 | ||
10325 | /* Read a die, all of its descendents, and all of its siblings; set | |
10326 | all of the fields of all of the dies correctly. Arguments are as | |
10327 | in read_die_and_children. */ | |
10328 | ||
10329 | static struct die_info * | |
93311388 DE |
10330 | read_die_and_siblings (const struct die_reader_specs *reader, |
10331 | gdb_byte *info_ptr, | |
fe1b8b76 | 10332 | gdb_byte **new_info_ptr, |
639d11d3 DC |
10333 | struct die_info *parent) |
10334 | { | |
10335 | struct die_info *first_die, *last_sibling; | |
fe1b8b76 | 10336 | gdb_byte *cur_ptr; |
639d11d3 | 10337 | |
c906108c | 10338 | cur_ptr = info_ptr; |
639d11d3 DC |
10339 | first_die = last_sibling = NULL; |
10340 | ||
10341 | while (1) | |
c906108c | 10342 | { |
639d11d3 | 10343 | struct die_info *die |
dee91e82 | 10344 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 10345 | |
1d325ec1 | 10346 | if (die == NULL) |
c906108c | 10347 | { |
639d11d3 DC |
10348 | *new_info_ptr = cur_ptr; |
10349 | return first_die; | |
c906108c | 10350 | } |
1d325ec1 DJ |
10351 | |
10352 | if (!first_die) | |
10353 | first_die = die; | |
c906108c | 10354 | else |
1d325ec1 DJ |
10355 | last_sibling->sibling = die; |
10356 | ||
10357 | last_sibling = die; | |
c906108c | 10358 | } |
c906108c SS |
10359 | } |
10360 | ||
3019eac3 DE |
10361 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
10362 | attributes. | |
10363 | The caller is responsible for filling in the extra attributes | |
10364 | and updating (*DIEP)->num_attrs. | |
10365 | Set DIEP to point to a newly allocated die with its information, | |
10366 | except for its child, sibling, and parent fields. | |
10367 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
93311388 DE |
10368 | |
10369 | static gdb_byte * | |
3019eac3 DE |
10370 | read_full_die_1 (const struct die_reader_specs *reader, |
10371 | struct die_info **diep, gdb_byte *info_ptr, | |
10372 | int *has_children, int num_extra_attrs) | |
93311388 | 10373 | { |
b64f50a1 JK |
10374 | unsigned int abbrev_number, bytes_read, i; |
10375 | sect_offset offset; | |
93311388 DE |
10376 | struct abbrev_info *abbrev; |
10377 | struct die_info *die; | |
10378 | struct dwarf2_cu *cu = reader->cu; | |
10379 | bfd *abfd = reader->abfd; | |
10380 | ||
b64f50a1 | 10381 | offset.sect_off = info_ptr - reader->buffer; |
93311388 DE |
10382 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
10383 | info_ptr += bytes_read; | |
10384 | if (!abbrev_number) | |
10385 | { | |
10386 | *diep = NULL; | |
10387 | *has_children = 0; | |
10388 | return info_ptr; | |
10389 | } | |
10390 | ||
10391 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); | |
10392 | if (!abbrev) | |
348e048f DE |
10393 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
10394 | abbrev_number, | |
10395 | bfd_get_filename (abfd)); | |
10396 | ||
3019eac3 | 10397 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
93311388 DE |
10398 | die->offset = offset; |
10399 | die->tag = abbrev->tag; | |
10400 | die->abbrev = abbrev_number; | |
10401 | ||
3019eac3 DE |
10402 | /* Make the result usable. |
10403 | The caller needs to update num_attrs after adding the extra | |
10404 | attributes. */ | |
93311388 DE |
10405 | die->num_attrs = abbrev->num_attrs; |
10406 | ||
10407 | for (i = 0; i < abbrev->num_attrs; ++i) | |
dee91e82 DE |
10408 | info_ptr = read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], |
10409 | info_ptr); | |
93311388 DE |
10410 | |
10411 | *diep = die; | |
10412 | *has_children = abbrev->has_children; | |
10413 | return info_ptr; | |
10414 | } | |
10415 | ||
3019eac3 DE |
10416 | /* Read a die and all its attributes. |
10417 | Set DIEP to point to a newly allocated die with its information, | |
10418 | except for its child, sibling, and parent fields. | |
10419 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
10420 | ||
10421 | static gdb_byte * | |
10422 | read_full_die (const struct die_reader_specs *reader, | |
10423 | struct die_info **diep, gdb_byte *info_ptr, | |
10424 | int *has_children) | |
10425 | { | |
10426 | return read_full_die_1 (reader, diep, info_ptr, has_children, 0); | |
10427 | } | |
10428 | ||
c906108c SS |
10429 | /* In DWARF version 2, the description of the debugging information is |
10430 | stored in a separate .debug_abbrev section. Before we read any | |
10431 | dies from a section we read in all abbreviations and install them | |
72bf9492 DJ |
10432 | in a hash table. This function also sets flags in CU describing |
10433 | the data found in the abbrev table. */ | |
c906108c SS |
10434 | |
10435 | static void | |
dee91e82 DE |
10436 | dwarf2_read_abbrevs (struct dwarf2_cu *cu, |
10437 | struct dwarf2_section_info *abbrev_section) | |
10438 | ||
c906108c | 10439 | { |
dee91e82 | 10440 | bfd *abfd = abbrev_section->asection->owner; |
e7c27a73 | 10441 | struct comp_unit_head *cu_header = &cu->header; |
fe1b8b76 | 10442 | gdb_byte *abbrev_ptr; |
c906108c SS |
10443 | struct abbrev_info *cur_abbrev; |
10444 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
10445 | unsigned int abbrev_form, hash_number; | |
f3dd6933 DJ |
10446 | struct attr_abbrev *cur_attrs; |
10447 | unsigned int allocated_attrs; | |
c906108c | 10448 | |
0963b4bd | 10449 | /* Initialize dwarf2 abbrevs. */ |
f3dd6933 DJ |
10450 | obstack_init (&cu->abbrev_obstack); |
10451 | cu->dwarf2_abbrevs = obstack_alloc (&cu->abbrev_obstack, | |
10452 | (ABBREV_HASH_SIZE | |
10453 | * sizeof (struct abbrev_info *))); | |
10454 | memset (cu->dwarf2_abbrevs, 0, | |
10455 | ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); | |
c906108c | 10456 | |
dee91e82 DE |
10457 | dwarf2_read_section (cu->objfile, abbrev_section); |
10458 | abbrev_ptr = abbrev_section->buffer + cu_header->abbrev_offset.sect_off; | |
c906108c SS |
10459 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
10460 | abbrev_ptr += bytes_read; | |
10461 | ||
f3dd6933 DJ |
10462 | allocated_attrs = ATTR_ALLOC_CHUNK; |
10463 | cur_attrs = xmalloc (allocated_attrs * sizeof (struct attr_abbrev)); | |
6e70227d | 10464 | |
0963b4bd | 10465 | /* Loop until we reach an abbrev number of 0. */ |
c906108c SS |
10466 | while (abbrev_number) |
10467 | { | |
f3dd6933 | 10468 | cur_abbrev = dwarf_alloc_abbrev (cu); |
c906108c SS |
10469 | |
10470 | /* read in abbrev header */ | |
10471 | cur_abbrev->number = abbrev_number; | |
10472 | cur_abbrev->tag = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
10473 | abbrev_ptr += bytes_read; | |
10474 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
10475 | abbrev_ptr += 1; | |
10476 | ||
10477 | /* now read in declarations */ | |
10478 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
10479 | abbrev_ptr += bytes_read; | |
10480 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
10481 | abbrev_ptr += bytes_read; | |
10482 | while (abbrev_name) | |
10483 | { | |
f3dd6933 | 10484 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 10485 | { |
f3dd6933 DJ |
10486 | allocated_attrs += ATTR_ALLOC_CHUNK; |
10487 | cur_attrs | |
10488 | = xrealloc (cur_attrs, (allocated_attrs | |
10489 | * sizeof (struct attr_abbrev))); | |
c906108c | 10490 | } |
ae038cb0 | 10491 | |
f3dd6933 DJ |
10492 | cur_attrs[cur_abbrev->num_attrs].name = abbrev_name; |
10493 | cur_attrs[cur_abbrev->num_attrs++].form = abbrev_form; | |
c906108c SS |
10494 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
10495 | abbrev_ptr += bytes_read; | |
10496 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
10497 | abbrev_ptr += bytes_read; | |
10498 | } | |
10499 | ||
f3dd6933 DJ |
10500 | cur_abbrev->attrs = obstack_alloc (&cu->abbrev_obstack, |
10501 | (cur_abbrev->num_attrs | |
10502 | * sizeof (struct attr_abbrev))); | |
10503 | memcpy (cur_abbrev->attrs, cur_attrs, | |
10504 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
10505 | ||
c906108c | 10506 | hash_number = abbrev_number % ABBREV_HASH_SIZE; |
f3dd6933 DJ |
10507 | cur_abbrev->next = cu->dwarf2_abbrevs[hash_number]; |
10508 | cu->dwarf2_abbrevs[hash_number] = cur_abbrev; | |
c906108c SS |
10509 | |
10510 | /* Get next abbreviation. | |
10511 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
10512 | always properly terminated with an abbrev number of 0. |
10513 | Exit loop if we encounter an abbreviation which we have | |
10514 | already read (which means we are about to read the abbreviations | |
10515 | for the next compile unit) or if the end of the abbreviation | |
10516 | table is reached. */ | |
dee91e82 DE |
10517 | if ((unsigned int) (abbrev_ptr - abbrev_section->buffer) |
10518 | >= abbrev_section->size) | |
c906108c SS |
10519 | break; |
10520 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
10521 | abbrev_ptr += bytes_read; | |
e7c27a73 | 10522 | if (dwarf2_lookup_abbrev (abbrev_number, cu) != NULL) |
c906108c SS |
10523 | break; |
10524 | } | |
f3dd6933 DJ |
10525 | |
10526 | xfree (cur_attrs); | |
c906108c SS |
10527 | } |
10528 | ||
f3dd6933 | 10529 | /* Release the memory used by the abbrev table for a compilation unit. */ |
c906108c | 10530 | |
c906108c | 10531 | static void |
f3dd6933 | 10532 | dwarf2_free_abbrev_table (void *ptr_to_cu) |
c906108c | 10533 | { |
f3dd6933 | 10534 | struct dwarf2_cu *cu = ptr_to_cu; |
c906108c | 10535 | |
f3dd6933 DJ |
10536 | obstack_free (&cu->abbrev_obstack, NULL); |
10537 | cu->dwarf2_abbrevs = NULL; | |
c906108c SS |
10538 | } |
10539 | ||
10540 | /* Lookup an abbrev_info structure in the abbrev hash table. */ | |
10541 | ||
10542 | static struct abbrev_info * | |
e7c27a73 | 10543 | dwarf2_lookup_abbrev (unsigned int number, struct dwarf2_cu *cu) |
c906108c SS |
10544 | { |
10545 | unsigned int hash_number; | |
10546 | struct abbrev_info *abbrev; | |
10547 | ||
10548 | hash_number = number % ABBREV_HASH_SIZE; | |
f3dd6933 | 10549 | abbrev = cu->dwarf2_abbrevs[hash_number]; |
c906108c SS |
10550 | |
10551 | while (abbrev) | |
10552 | { | |
10553 | if (abbrev->number == number) | |
10554 | return abbrev; | |
10555 | else | |
10556 | abbrev = abbrev->next; | |
10557 | } | |
10558 | return NULL; | |
10559 | } | |
10560 | ||
72bf9492 DJ |
10561 | /* Returns nonzero if TAG represents a type that we might generate a partial |
10562 | symbol for. */ | |
10563 | ||
10564 | static int | |
10565 | is_type_tag_for_partial (int tag) | |
10566 | { | |
10567 | switch (tag) | |
10568 | { | |
10569 | #if 0 | |
10570 | /* Some types that would be reasonable to generate partial symbols for, | |
10571 | that we don't at present. */ | |
10572 | case DW_TAG_array_type: | |
10573 | case DW_TAG_file_type: | |
10574 | case DW_TAG_ptr_to_member_type: | |
10575 | case DW_TAG_set_type: | |
10576 | case DW_TAG_string_type: | |
10577 | case DW_TAG_subroutine_type: | |
10578 | #endif | |
10579 | case DW_TAG_base_type: | |
10580 | case DW_TAG_class_type: | |
680b30c7 | 10581 | case DW_TAG_interface_type: |
72bf9492 DJ |
10582 | case DW_TAG_enumeration_type: |
10583 | case DW_TAG_structure_type: | |
10584 | case DW_TAG_subrange_type: | |
10585 | case DW_TAG_typedef: | |
10586 | case DW_TAG_union_type: | |
10587 | return 1; | |
10588 | default: | |
10589 | return 0; | |
10590 | } | |
10591 | } | |
10592 | ||
10593 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
10594 | ||
10595 | static struct partial_die_info * | |
dee91e82 DE |
10596 | load_partial_dies (const struct die_reader_specs *reader, |
10597 | gdb_byte *info_ptr, int building_psymtab) | |
72bf9492 | 10598 | { |
dee91e82 | 10599 | struct dwarf2_cu *cu = reader->cu; |
bb5ed363 | 10600 | struct objfile *objfile = cu->objfile; |
72bf9492 DJ |
10601 | struct partial_die_info *part_die; |
10602 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; | |
10603 | struct abbrev_info *abbrev; | |
10604 | unsigned int bytes_read; | |
5afb4e99 | 10605 | unsigned int load_all = 0; |
72bf9492 DJ |
10606 | int nesting_level = 1; |
10607 | ||
10608 | parent_die = NULL; | |
10609 | last_die = NULL; | |
10610 | ||
7adf1e79 DE |
10611 | gdb_assert (cu->per_cu != NULL); |
10612 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
10613 | load_all = 1; |
10614 | ||
72bf9492 DJ |
10615 | cu->partial_dies |
10616 | = htab_create_alloc_ex (cu->header.length / 12, | |
10617 | partial_die_hash, | |
10618 | partial_die_eq, | |
10619 | NULL, | |
10620 | &cu->comp_unit_obstack, | |
10621 | hashtab_obstack_allocate, | |
10622 | dummy_obstack_deallocate); | |
10623 | ||
10624 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
10625 | sizeof (struct partial_die_info)); | |
10626 | ||
10627 | while (1) | |
10628 | { | |
10629 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
10630 | ||
10631 | /* A NULL abbrev means the end of a series of children. */ | |
10632 | if (abbrev == NULL) | |
10633 | { | |
10634 | if (--nesting_level == 0) | |
10635 | { | |
10636 | /* PART_DIE was probably the last thing allocated on the | |
10637 | comp_unit_obstack, so we could call obstack_free | |
10638 | here. We don't do that because the waste is small, | |
10639 | and will be cleaned up when we're done with this | |
10640 | compilation unit. This way, we're also more robust | |
10641 | against other users of the comp_unit_obstack. */ | |
10642 | return first_die; | |
10643 | } | |
10644 | info_ptr += bytes_read; | |
10645 | last_die = parent_die; | |
10646 | parent_die = parent_die->die_parent; | |
10647 | continue; | |
10648 | } | |
10649 | ||
98bfdba5 PA |
10650 | /* Check for template arguments. We never save these; if |
10651 | they're seen, we just mark the parent, and go on our way. */ | |
10652 | if (parent_die != NULL | |
10653 | && cu->language == language_cplus | |
10654 | && (abbrev->tag == DW_TAG_template_type_param | |
10655 | || abbrev->tag == DW_TAG_template_value_param)) | |
10656 | { | |
10657 | parent_die->has_template_arguments = 1; | |
10658 | ||
10659 | if (!load_all) | |
10660 | { | |
10661 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 10662 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
10663 | continue; |
10664 | } | |
10665 | } | |
10666 | ||
0d99eb77 | 10667 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
10668 | Skip their other children. */ |
10669 | if (!load_all | |
10670 | && cu->language == language_cplus | |
10671 | && parent_die != NULL | |
10672 | && parent_die->tag == DW_TAG_subprogram) | |
10673 | { | |
dee91e82 | 10674 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
10675 | continue; |
10676 | } | |
10677 | ||
5afb4e99 DJ |
10678 | /* Check whether this DIE is interesting enough to save. Normally |
10679 | we would not be interested in members here, but there may be | |
10680 | later variables referencing them via DW_AT_specification (for | |
10681 | static members). */ | |
10682 | if (!load_all | |
10683 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 10684 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
10685 | && abbrev->tag != DW_TAG_enumerator |
10686 | && abbrev->tag != DW_TAG_subprogram | |
bc30ff58 | 10687 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 10688 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 10689 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 10690 | && abbrev->tag != DW_TAG_module |
5afb4e99 | 10691 | && abbrev->tag != DW_TAG_member) |
72bf9492 DJ |
10692 | { |
10693 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 10694 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
10695 | continue; |
10696 | } | |
10697 | ||
dee91e82 DE |
10698 | info_ptr = read_partial_die (reader, part_die, abbrev, bytes_read, |
10699 | info_ptr); | |
72bf9492 DJ |
10700 | |
10701 | /* This two-pass algorithm for processing partial symbols has a | |
10702 | high cost in cache pressure. Thus, handle some simple cases | |
10703 | here which cover the majority of C partial symbols. DIEs | |
10704 | which neither have specification tags in them, nor could have | |
10705 | specification tags elsewhere pointing at them, can simply be | |
10706 | processed and discarded. | |
10707 | ||
10708 | This segment is also optional; scan_partial_symbols and | |
10709 | add_partial_symbol will handle these DIEs if we chain | |
10710 | them in normally. When compilers which do not emit large | |
10711 | quantities of duplicate debug information are more common, | |
10712 | this code can probably be removed. */ | |
10713 | ||
10714 | /* Any complete simple types at the top level (pretty much all | |
10715 | of them, for a language without namespaces), can be processed | |
10716 | directly. */ | |
10717 | if (parent_die == NULL | |
10718 | && part_die->has_specification == 0 | |
10719 | && part_die->is_declaration == 0 | |
d8228535 | 10720 | && ((part_die->tag == DW_TAG_typedef && !part_die->has_children) |
72bf9492 DJ |
10721 | || part_die->tag == DW_TAG_base_type |
10722 | || part_die->tag == DW_TAG_subrange_type)) | |
10723 | { | |
10724 | if (building_psymtab && part_die->name != NULL) | |
04a679b8 | 10725 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 10726 | VAR_DOMAIN, LOC_TYPEDEF, |
bb5ed363 DE |
10727 | &objfile->static_psymbols, |
10728 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
dee91e82 | 10729 | info_ptr = locate_pdi_sibling (reader, part_die, info_ptr); |
72bf9492 DJ |
10730 | continue; |
10731 | } | |
10732 | ||
d8228535 JK |
10733 | /* The exception for DW_TAG_typedef with has_children above is |
10734 | a workaround of GCC PR debug/47510. In the case of this complaint | |
10735 | type_name_no_tag_or_error will error on such types later. | |
10736 | ||
10737 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
10738 | it could not find the child DIEs referenced later, this is checked | |
10739 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
10740 | ||
10741 | if (part_die->tag == DW_TAG_typedef && part_die->has_children) | |
10742 | complaint (&symfile_complaints, | |
10743 | _("DW_TAG_typedef has childen - GCC PR debug/47510 bug " | |
10744 | "- DIE at 0x%x [in module %s]"), | |
b64f50a1 | 10745 | part_die->offset.sect_off, objfile->name); |
d8228535 | 10746 | |
72bf9492 DJ |
10747 | /* If we're at the second level, and we're an enumerator, and |
10748 | our parent has no specification (meaning possibly lives in a | |
10749 | namespace elsewhere), then we can add the partial symbol now | |
10750 | instead of queueing it. */ | |
10751 | if (part_die->tag == DW_TAG_enumerator | |
10752 | && parent_die != NULL | |
10753 | && parent_die->die_parent == NULL | |
10754 | && parent_die->tag == DW_TAG_enumeration_type | |
10755 | && parent_die->has_specification == 0) | |
10756 | { | |
10757 | if (part_die->name == NULL) | |
3e43a32a MS |
10758 | complaint (&symfile_complaints, |
10759 | _("malformed enumerator DIE ignored")); | |
72bf9492 | 10760 | else if (building_psymtab) |
04a679b8 | 10761 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 10762 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
10763 | (cu->language == language_cplus |
10764 | || cu->language == language_java) | |
bb5ed363 DE |
10765 | ? &objfile->global_psymbols |
10766 | : &objfile->static_psymbols, | |
10767 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
72bf9492 | 10768 | |
dee91e82 | 10769 | info_ptr = locate_pdi_sibling (reader, part_die, info_ptr); |
72bf9492 DJ |
10770 | continue; |
10771 | } | |
10772 | ||
10773 | /* We'll save this DIE so link it in. */ | |
10774 | part_die->die_parent = parent_die; | |
10775 | part_die->die_sibling = NULL; | |
10776 | part_die->die_child = NULL; | |
10777 | ||
10778 | if (last_die && last_die == parent_die) | |
10779 | last_die->die_child = part_die; | |
10780 | else if (last_die) | |
10781 | last_die->die_sibling = part_die; | |
10782 | ||
10783 | last_die = part_die; | |
10784 | ||
10785 | if (first_die == NULL) | |
10786 | first_die = part_die; | |
10787 | ||
10788 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
10789 | find interesting need to be in the hash table, because we | |
10790 | also have the parent/sibling/child chains; only those that we | |
10791 | might refer to by offset later during partial symbol reading. | |
10792 | ||
10793 | For now this means things that might have be the target of a | |
10794 | DW_AT_specification, DW_AT_abstract_origin, or | |
10795 | DW_AT_extension. DW_AT_extension will refer only to | |
10796 | namespaces; DW_AT_abstract_origin refers to functions (and | |
10797 | many things under the function DIE, but we do not recurse | |
10798 | into function DIEs during partial symbol reading) and | |
10799 | possibly variables as well; DW_AT_specification refers to | |
10800 | declarations. Declarations ought to have the DW_AT_declaration | |
10801 | flag. It happens that GCC forgets to put it in sometimes, but | |
10802 | only for functions, not for types. | |
10803 | ||
10804 | Adding more things than necessary to the hash table is harmless | |
10805 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
10806 | wasted time in find_partial_die, when we reread the compilation |
10807 | unit with load_all_dies set. */ | |
72bf9492 | 10808 | |
5afb4e99 | 10809 | if (load_all |
72929c62 | 10810 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 10811 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
10812 | || abbrev->tag == DW_TAG_variable |
10813 | || abbrev->tag == DW_TAG_namespace | |
10814 | || part_die->is_declaration) | |
10815 | { | |
10816 | void **slot; | |
10817 | ||
10818 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
b64f50a1 | 10819 | part_die->offset.sect_off, INSERT); |
72bf9492 DJ |
10820 | *slot = part_die; |
10821 | } | |
10822 | ||
10823 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
10824 | sizeof (struct partial_die_info)); | |
10825 | ||
10826 | /* For some DIEs we want to follow their children (if any). For C | |
bc30ff58 | 10827 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
10828 | languages we have to, so that we can get at method physnames |
10829 | to infer fully qualified class names, for DW_AT_specification, | |
10830 | and for C++ template arguments. For C++, we also look one level | |
10831 | inside functions to find template arguments (if the name of the | |
10832 | function does not already contain the template arguments). | |
bc30ff58 JB |
10833 | |
10834 | For Ada, we need to scan the children of subprograms and lexical | |
10835 | blocks as well because Ada allows the definition of nested | |
10836 | entities that could be interesting for the debugger, such as | |
10837 | nested subprograms for instance. */ | |
72bf9492 | 10838 | if (last_die->has_children |
5afb4e99 DJ |
10839 | && (load_all |
10840 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 10841 | || last_die->tag == DW_TAG_module |
72bf9492 | 10842 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
10843 | || (cu->language == language_cplus |
10844 | && last_die->tag == DW_TAG_subprogram | |
10845 | && (last_die->name == NULL | |
10846 | || strchr (last_die->name, '<') == NULL)) | |
72bf9492 DJ |
10847 | || (cu->language != language_c |
10848 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 10849 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 10850 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 JB |
10851 | || last_die->tag == DW_TAG_union_type)) |
10852 | || (cu->language == language_ada | |
10853 | && (last_die->tag == DW_TAG_subprogram | |
10854 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
10855 | { |
10856 | nesting_level++; | |
10857 | parent_die = last_die; | |
10858 | continue; | |
10859 | } | |
10860 | ||
10861 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 10862 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
10863 | |
10864 | /* Back to the top, do it again. */ | |
10865 | } | |
10866 | } | |
10867 | ||
c906108c SS |
10868 | /* Read a minimal amount of information into the minimal die structure. */ |
10869 | ||
fe1b8b76 | 10870 | static gdb_byte * |
dee91e82 DE |
10871 | read_partial_die (const struct die_reader_specs *reader, |
10872 | struct partial_die_info *part_die, | |
10873 | struct abbrev_info *abbrev, unsigned int abbrev_len, | |
10874 | gdb_byte *info_ptr) | |
c906108c | 10875 | { |
dee91e82 | 10876 | struct dwarf2_cu *cu = reader->cu; |
bb5ed363 | 10877 | struct objfile *objfile = cu->objfile; |
dee91e82 | 10878 | gdb_byte *buffer = reader->buffer; |
fa238c03 | 10879 | unsigned int i; |
c906108c | 10880 | struct attribute attr; |
c5aa993b | 10881 | int has_low_pc_attr = 0; |
c906108c | 10882 | int has_high_pc_attr = 0; |
91da1414 | 10883 | int high_pc_relative = 0; |
c906108c | 10884 | |
72bf9492 | 10885 | memset (part_die, 0, sizeof (struct partial_die_info)); |
c906108c | 10886 | |
b64f50a1 | 10887 | part_die->offset.sect_off = info_ptr - buffer; |
72bf9492 DJ |
10888 | |
10889 | info_ptr += abbrev_len; | |
10890 | ||
10891 | if (abbrev == NULL) | |
10892 | return info_ptr; | |
10893 | ||
c906108c SS |
10894 | part_die->tag = abbrev->tag; |
10895 | part_die->has_children = abbrev->has_children; | |
c906108c SS |
10896 | |
10897 | for (i = 0; i < abbrev->num_attrs; ++i) | |
10898 | { | |
dee91e82 | 10899 | info_ptr = read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
c906108c SS |
10900 | |
10901 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 10902 | partial symbol table. */ |
c906108c SS |
10903 | switch (attr.name) |
10904 | { | |
10905 | case DW_AT_name: | |
71c25dea TT |
10906 | switch (part_die->tag) |
10907 | { | |
10908 | case DW_TAG_compile_unit: | |
348e048f | 10909 | case DW_TAG_type_unit: |
71c25dea TT |
10910 | /* Compilation units have a DW_AT_name that is a filename, not |
10911 | a source language identifier. */ | |
10912 | case DW_TAG_enumeration_type: | |
10913 | case DW_TAG_enumerator: | |
10914 | /* These tags always have simple identifiers already; no need | |
10915 | to canonicalize them. */ | |
10916 | part_die->name = DW_STRING (&attr); | |
10917 | break; | |
10918 | default: | |
10919 | part_die->name | |
10920 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, | |
bb5ed363 | 10921 | &objfile->objfile_obstack); |
71c25dea TT |
10922 | break; |
10923 | } | |
c906108c | 10924 | break; |
31ef98ae | 10925 | case DW_AT_linkage_name: |
c906108c | 10926 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
10927 | /* Note that both forms of linkage name might appear. We |
10928 | assume they will be the same, and we only store the last | |
10929 | one we see. */ | |
94af9270 KS |
10930 | if (cu->language == language_ada) |
10931 | part_die->name = DW_STRING (&attr); | |
abc72ce4 | 10932 | part_die->linkage_name = DW_STRING (&attr); |
c906108c SS |
10933 | break; |
10934 | case DW_AT_low_pc: | |
10935 | has_low_pc_attr = 1; | |
10936 | part_die->lowpc = DW_ADDR (&attr); | |
10937 | break; | |
10938 | case DW_AT_high_pc: | |
10939 | has_high_pc_attr = 1; | |
3019eac3 DE |
10940 | if (attr.form == DW_FORM_addr |
10941 | || attr.form == DW_FORM_GNU_addr_index) | |
91da1414 MW |
10942 | part_die->highpc = DW_ADDR (&attr); |
10943 | else | |
10944 | { | |
10945 | high_pc_relative = 1; | |
10946 | part_die->highpc = DW_UNSND (&attr); | |
10947 | } | |
c906108c SS |
10948 | break; |
10949 | case DW_AT_location: | |
0963b4bd | 10950 | /* Support the .debug_loc offsets. */ |
8e19ed76 PS |
10951 | if (attr_form_is_block (&attr)) |
10952 | { | |
10953 | part_die->locdesc = DW_BLOCK (&attr); | |
10954 | } | |
3690dd37 | 10955 | else if (attr_form_is_section_offset (&attr)) |
8e19ed76 | 10956 | { |
4d3c2250 | 10957 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
10958 | } |
10959 | else | |
10960 | { | |
4d3c2250 KB |
10961 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
10962 | "partial symbol information"); | |
8e19ed76 | 10963 | } |
c906108c | 10964 | break; |
c906108c SS |
10965 | case DW_AT_external: |
10966 | part_die->is_external = DW_UNSND (&attr); | |
10967 | break; | |
10968 | case DW_AT_declaration: | |
10969 | part_die->is_declaration = DW_UNSND (&attr); | |
10970 | break; | |
10971 | case DW_AT_type: | |
10972 | part_die->has_type = 1; | |
10973 | break; | |
10974 | case DW_AT_abstract_origin: | |
10975 | case DW_AT_specification: | |
72bf9492 DJ |
10976 | case DW_AT_extension: |
10977 | part_die->has_specification = 1; | |
c764a876 | 10978 | part_die->spec_offset = dwarf2_get_ref_die_offset (&attr); |
c906108c SS |
10979 | break; |
10980 | case DW_AT_sibling: | |
10981 | /* Ignore absolute siblings, they might point outside of | |
10982 | the current compile unit. */ | |
10983 | if (attr.form == DW_FORM_ref_addr) | |
3e43a32a MS |
10984 | complaint (&symfile_complaints, |
10985 | _("ignoring absolute DW_AT_sibling")); | |
c906108c | 10986 | else |
b64f50a1 | 10987 | part_die->sibling = buffer + dwarf2_get_ref_die_offset (&attr).sect_off; |
c906108c | 10988 | break; |
fa4028e9 JB |
10989 | case DW_AT_byte_size: |
10990 | part_die->has_byte_size = 1; | |
10991 | break; | |
68511cec CES |
10992 | case DW_AT_calling_convention: |
10993 | /* DWARF doesn't provide a way to identify a program's source-level | |
10994 | entry point. DW_AT_calling_convention attributes are only meant | |
10995 | to describe functions' calling conventions. | |
10996 | ||
10997 | However, because it's a necessary piece of information in | |
10998 | Fortran, and because DW_CC_program is the only piece of debugging | |
10999 | information whose definition refers to a 'main program' at all, | |
11000 | several compilers have begun marking Fortran main programs with | |
11001 | DW_CC_program --- even when those functions use the standard | |
11002 | calling conventions. | |
11003 | ||
11004 | So until DWARF specifies a way to provide this information and | |
11005 | compilers pick up the new representation, we'll support this | |
11006 | practice. */ | |
11007 | if (DW_UNSND (&attr) == DW_CC_program | |
11008 | && cu->language == language_fortran) | |
01f8c46d JK |
11009 | { |
11010 | set_main_name (part_die->name); | |
11011 | ||
11012 | /* As this DIE has a static linkage the name would be difficult | |
11013 | to look up later. */ | |
11014 | language_of_main = language_fortran; | |
11015 | } | |
68511cec | 11016 | break; |
481860b3 GB |
11017 | case DW_AT_inline: |
11018 | if (DW_UNSND (&attr) == DW_INL_inlined | |
11019 | || DW_UNSND (&attr) == DW_INL_declared_inlined) | |
11020 | part_die->may_be_inlined = 1; | |
11021 | break; | |
c906108c SS |
11022 | default: |
11023 | break; | |
11024 | } | |
11025 | } | |
11026 | ||
91da1414 MW |
11027 | if (high_pc_relative) |
11028 | part_die->highpc += part_die->lowpc; | |
11029 | ||
9373cf26 JK |
11030 | if (has_low_pc_attr && has_high_pc_attr) |
11031 | { | |
11032 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
11033 | eliminate duplicate copies of functions and vtables and such. | |
11034 | The linker will arbitrarily choose one and discard the others. | |
11035 | The AT_*_pc values for such functions refer to local labels in | |
11036 | these sections. If the section from that file was discarded, the | |
11037 | labels are not in the output, so the relocs get a value of 0. | |
11038 | If this is a discarded function, mark the pc bounds as invalid, | |
11039 | so that GDB will ignore it. */ | |
11040 | if (part_die->lowpc == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
11041 | { | |
bb5ed363 | 11042 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
11043 | |
11044 | complaint (&symfile_complaints, | |
11045 | _("DW_AT_low_pc %s is zero " | |
11046 | "for DIE at 0x%x [in module %s]"), | |
11047 | paddress (gdbarch, part_die->lowpc), | |
b64f50a1 | 11048 | part_die->offset.sect_off, objfile->name); |
9373cf26 JK |
11049 | } |
11050 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
11051 | else if (part_die->lowpc >= part_die->highpc) | |
11052 | { | |
bb5ed363 | 11053 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
11054 | |
11055 | complaint (&symfile_complaints, | |
11056 | _("DW_AT_low_pc %s is not < DW_AT_high_pc %s " | |
11057 | "for DIE at 0x%x [in module %s]"), | |
11058 | paddress (gdbarch, part_die->lowpc), | |
11059 | paddress (gdbarch, part_die->highpc), | |
b64f50a1 | 11060 | part_die->offset.sect_off, objfile->name); |
9373cf26 JK |
11061 | } |
11062 | else | |
11063 | part_die->has_pc_info = 1; | |
11064 | } | |
85cbf3d3 | 11065 | |
c906108c SS |
11066 | return info_ptr; |
11067 | } | |
11068 | ||
72bf9492 DJ |
11069 | /* Find a cached partial DIE at OFFSET in CU. */ |
11070 | ||
11071 | static struct partial_die_info * | |
b64f50a1 | 11072 | find_partial_die_in_comp_unit (sect_offset offset, struct dwarf2_cu *cu) |
72bf9492 DJ |
11073 | { |
11074 | struct partial_die_info *lookup_die = NULL; | |
11075 | struct partial_die_info part_die; | |
11076 | ||
11077 | part_die.offset = offset; | |
b64f50a1 JK |
11078 | lookup_die = htab_find_with_hash (cu->partial_dies, &part_die, |
11079 | offset.sect_off); | |
72bf9492 | 11080 | |
72bf9492 DJ |
11081 | return lookup_die; |
11082 | } | |
11083 | ||
348e048f DE |
11084 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
11085 | except in the case of .debug_types DIEs which do not reference | |
11086 | outside their CU (they do however referencing other types via | |
55f1336d | 11087 | DW_FORM_ref_sig8). */ |
72bf9492 DJ |
11088 | |
11089 | static struct partial_die_info * | |
b64f50a1 | 11090 | find_partial_die (sect_offset offset, struct dwarf2_cu *cu) |
72bf9492 | 11091 | { |
bb5ed363 | 11092 | struct objfile *objfile = cu->objfile; |
5afb4e99 DJ |
11093 | struct dwarf2_per_cu_data *per_cu = NULL; |
11094 | struct partial_die_info *pd = NULL; | |
72bf9492 | 11095 | |
45452591 | 11096 | if (offset_in_cu_p (&cu->header, offset)) |
5afb4e99 DJ |
11097 | { |
11098 | pd = find_partial_die_in_comp_unit (offset, cu); | |
11099 | if (pd != NULL) | |
11100 | return pd; | |
0d99eb77 DE |
11101 | /* We missed recording what we needed. |
11102 | Load all dies and try again. */ | |
11103 | per_cu = cu->per_cu; | |
5afb4e99 | 11104 | } |
0d99eb77 DE |
11105 | else |
11106 | { | |
11107 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 11108 | if (cu->per_cu->is_debug_types) |
0d99eb77 DE |
11109 | { |
11110 | error (_("Dwarf Error: Type Unit at offset 0x%lx contains" | |
11111 | " external reference to offset 0x%lx [in module %s].\n"), | |
11112 | (long) cu->header.offset.sect_off, (long) offset.sect_off, | |
11113 | bfd_get_filename (objfile->obfd)); | |
11114 | } | |
11115 | per_cu = dwarf2_find_containing_comp_unit (offset, objfile); | |
72bf9492 | 11116 | |
0d99eb77 DE |
11117 | if (per_cu->cu == NULL || per_cu->cu->partial_dies == NULL) |
11118 | load_partial_comp_unit (per_cu); | |
ae038cb0 | 11119 | |
0d99eb77 DE |
11120 | per_cu->cu->last_used = 0; |
11121 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
11122 | } | |
5afb4e99 | 11123 | |
dee91e82 DE |
11124 | /* If we didn't find it, and not all dies have been loaded, |
11125 | load them all and try again. */ | |
11126 | ||
5afb4e99 DJ |
11127 | if (pd == NULL && per_cu->load_all_dies == 0) |
11128 | { | |
5afb4e99 | 11129 | per_cu->load_all_dies = 1; |
fd820528 DE |
11130 | |
11131 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
11132 | THIS_CU->cu may already be in use. So we can't just free it and | |
11133 | replace its DIEs with the ones we read in. Instead, we leave those | |
11134 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
11135 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
11136 | set. */ | |
dee91e82 | 11137 | load_partial_comp_unit (per_cu); |
5afb4e99 DJ |
11138 | |
11139 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
11140 | } | |
11141 | ||
11142 | if (pd == NULL) | |
11143 | internal_error (__FILE__, __LINE__, | |
3e43a32a MS |
11144 | _("could not find partial DIE 0x%x " |
11145 | "in cache [from module %s]\n"), | |
b64f50a1 | 11146 | offset.sect_off, bfd_get_filename (objfile->obfd)); |
5afb4e99 | 11147 | return pd; |
72bf9492 DJ |
11148 | } |
11149 | ||
abc72ce4 DE |
11150 | /* See if we can figure out if the class lives in a namespace. We do |
11151 | this by looking for a member function; its demangled name will | |
11152 | contain namespace info, if there is any. */ | |
11153 | ||
11154 | static void | |
11155 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
11156 | struct dwarf2_cu *cu) | |
11157 | { | |
11158 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
11159 | what template types look like, because the demangler | |
11160 | frequently doesn't give the same name as the debug info. We | |
11161 | could fix this by only using the demangled name to get the | |
11162 | prefix (but see comment in read_structure_type). */ | |
11163 | ||
11164 | struct partial_die_info *real_pdi; | |
11165 | struct partial_die_info *child_pdi; | |
11166 | ||
11167 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
11168 | we should not do this. We'll prepend the parent's fully qualified | |
11169 | name when we create the partial symbol. */ | |
11170 | ||
11171 | real_pdi = struct_pdi; | |
11172 | while (real_pdi->has_specification) | |
11173 | real_pdi = find_partial_die (real_pdi->spec_offset, cu); | |
11174 | ||
11175 | if (real_pdi->die_parent != NULL) | |
11176 | return; | |
11177 | ||
11178 | for (child_pdi = struct_pdi->die_child; | |
11179 | child_pdi != NULL; | |
11180 | child_pdi = child_pdi->die_sibling) | |
11181 | { | |
11182 | if (child_pdi->tag == DW_TAG_subprogram | |
11183 | && child_pdi->linkage_name != NULL) | |
11184 | { | |
11185 | char *actual_class_name | |
11186 | = language_class_name_from_physname (cu->language_defn, | |
11187 | child_pdi->linkage_name); | |
11188 | if (actual_class_name != NULL) | |
11189 | { | |
11190 | struct_pdi->name | |
11191 | = obsavestring (actual_class_name, | |
11192 | strlen (actual_class_name), | |
11193 | &cu->objfile->objfile_obstack); | |
11194 | xfree (actual_class_name); | |
11195 | } | |
11196 | break; | |
11197 | } | |
11198 | } | |
11199 | } | |
11200 | ||
72bf9492 DJ |
11201 | /* Adjust PART_DIE before generating a symbol for it. This function |
11202 | may set the is_external flag or change the DIE's name. */ | |
11203 | ||
11204 | static void | |
11205 | fixup_partial_die (struct partial_die_info *part_die, | |
11206 | struct dwarf2_cu *cu) | |
11207 | { | |
abc72ce4 DE |
11208 | /* Once we've fixed up a die, there's no point in doing so again. |
11209 | This also avoids a memory leak if we were to call | |
11210 | guess_partial_die_structure_name multiple times. */ | |
11211 | if (part_die->fixup_called) | |
11212 | return; | |
11213 | ||
72bf9492 DJ |
11214 | /* If we found a reference attribute and the DIE has no name, try |
11215 | to find a name in the referred to DIE. */ | |
11216 | ||
11217 | if (part_die->name == NULL && part_die->has_specification) | |
11218 | { | |
11219 | struct partial_die_info *spec_die; | |
72bf9492 | 11220 | |
10b3939b | 11221 | spec_die = find_partial_die (part_die->spec_offset, cu); |
72bf9492 | 11222 | |
10b3939b | 11223 | fixup_partial_die (spec_die, cu); |
72bf9492 DJ |
11224 | |
11225 | if (spec_die->name) | |
11226 | { | |
11227 | part_die->name = spec_die->name; | |
11228 | ||
11229 | /* Copy DW_AT_external attribute if it is set. */ | |
11230 | if (spec_die->is_external) | |
11231 | part_die->is_external = spec_die->is_external; | |
11232 | } | |
11233 | } | |
11234 | ||
11235 | /* Set default names for some unnamed DIEs. */ | |
72bf9492 DJ |
11236 | |
11237 | if (part_die->name == NULL && part_die->tag == DW_TAG_namespace) | |
2b1dbab0 | 11238 | part_die->name = CP_ANONYMOUS_NAMESPACE_STR; |
72bf9492 | 11239 | |
abc72ce4 DE |
11240 | /* If there is no parent die to provide a namespace, and there are |
11241 | children, see if we can determine the namespace from their linkage | |
122d1940 | 11242 | name. */ |
abc72ce4 | 11243 | if (cu->language == language_cplus |
8b70b953 | 11244 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
11245 | && part_die->die_parent == NULL |
11246 | && part_die->has_children | |
11247 | && (part_die->tag == DW_TAG_class_type | |
11248 | || part_die->tag == DW_TAG_structure_type | |
11249 | || part_die->tag == DW_TAG_union_type)) | |
11250 | guess_partial_die_structure_name (part_die, cu); | |
11251 | ||
53832f31 TT |
11252 | /* GCC might emit a nameless struct or union that has a linkage |
11253 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
11254 | if (part_die->name == NULL | |
96408a79 SA |
11255 | && (part_die->tag == DW_TAG_class_type |
11256 | || part_die->tag == DW_TAG_interface_type | |
11257 | || part_die->tag == DW_TAG_structure_type | |
11258 | || part_die->tag == DW_TAG_union_type) | |
53832f31 TT |
11259 | && part_die->linkage_name != NULL) |
11260 | { | |
11261 | char *demangled; | |
11262 | ||
11263 | demangled = cplus_demangle (part_die->linkage_name, DMGL_TYPES); | |
11264 | if (demangled) | |
11265 | { | |
96408a79 SA |
11266 | const char *base; |
11267 | ||
11268 | /* Strip any leading namespaces/classes, keep only the base name. | |
11269 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
11270 | base = strrchr (demangled, ':'); | |
11271 | if (base && base > demangled && base[-1] == ':') | |
11272 | base++; | |
11273 | else | |
11274 | base = demangled; | |
11275 | ||
11276 | part_die->name = obsavestring (base, strlen (base), | |
53832f31 TT |
11277 | &cu->objfile->objfile_obstack); |
11278 | xfree (demangled); | |
11279 | } | |
11280 | } | |
11281 | ||
abc72ce4 | 11282 | part_die->fixup_called = 1; |
72bf9492 DJ |
11283 | } |
11284 | ||
a8329558 | 11285 | /* Read an attribute value described by an attribute form. */ |
c906108c | 11286 | |
fe1b8b76 | 11287 | static gdb_byte * |
dee91e82 DE |
11288 | read_attribute_value (const struct die_reader_specs *reader, |
11289 | struct attribute *attr, unsigned form, | |
11290 | gdb_byte *info_ptr) | |
c906108c | 11291 | { |
dee91e82 DE |
11292 | struct dwarf2_cu *cu = reader->cu; |
11293 | bfd *abfd = reader->abfd; | |
e7c27a73 | 11294 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
11295 | unsigned int bytes_read; |
11296 | struct dwarf_block *blk; | |
11297 | ||
a8329558 KW |
11298 | attr->form = form; |
11299 | switch (form) | |
c906108c | 11300 | { |
c906108c | 11301 | case DW_FORM_ref_addr: |
ae411497 | 11302 | if (cu->header.version == 2) |
4568ecf9 | 11303 | DW_UNSND (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
ae411497 | 11304 | else |
4568ecf9 DE |
11305 | DW_UNSND (attr) = read_offset (abfd, info_ptr, |
11306 | &cu->header, &bytes_read); | |
ae411497 TT |
11307 | info_ptr += bytes_read; |
11308 | break; | |
11309 | case DW_FORM_addr: | |
e7c27a73 | 11310 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
107d2387 | 11311 | info_ptr += bytes_read; |
c906108c SS |
11312 | break; |
11313 | case DW_FORM_block2: | |
7b5a2f43 | 11314 | blk = dwarf_alloc_block (cu); |
c906108c SS |
11315 | blk->size = read_2_bytes (abfd, info_ptr); |
11316 | info_ptr += 2; | |
11317 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
11318 | info_ptr += blk->size; | |
11319 | DW_BLOCK (attr) = blk; | |
11320 | break; | |
11321 | case DW_FORM_block4: | |
7b5a2f43 | 11322 | blk = dwarf_alloc_block (cu); |
c906108c SS |
11323 | blk->size = read_4_bytes (abfd, info_ptr); |
11324 | info_ptr += 4; | |
11325 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
11326 | info_ptr += blk->size; | |
11327 | DW_BLOCK (attr) = blk; | |
11328 | break; | |
11329 | case DW_FORM_data2: | |
11330 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
11331 | info_ptr += 2; | |
11332 | break; | |
11333 | case DW_FORM_data4: | |
11334 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
11335 | info_ptr += 4; | |
11336 | break; | |
11337 | case DW_FORM_data8: | |
11338 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
11339 | info_ptr += 8; | |
11340 | break; | |
2dc7f7b3 TT |
11341 | case DW_FORM_sec_offset: |
11342 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
11343 | info_ptr += bytes_read; | |
11344 | break; | |
c906108c | 11345 | case DW_FORM_string: |
9b1c24c8 | 11346 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 11347 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
11348 | info_ptr += bytes_read; |
11349 | break; | |
4bdf3d34 JJ |
11350 | case DW_FORM_strp: |
11351 | DW_STRING (attr) = read_indirect_string (abfd, info_ptr, cu_header, | |
11352 | &bytes_read); | |
8285870a | 11353 | DW_STRING_IS_CANONICAL (attr) = 0; |
4bdf3d34 JJ |
11354 | info_ptr += bytes_read; |
11355 | break; | |
2dc7f7b3 | 11356 | case DW_FORM_exprloc: |
c906108c | 11357 | case DW_FORM_block: |
7b5a2f43 | 11358 | blk = dwarf_alloc_block (cu); |
c906108c SS |
11359 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
11360 | info_ptr += bytes_read; | |
11361 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
11362 | info_ptr += blk->size; | |
11363 | DW_BLOCK (attr) = blk; | |
11364 | break; | |
11365 | case DW_FORM_block1: | |
7b5a2f43 | 11366 | blk = dwarf_alloc_block (cu); |
c906108c SS |
11367 | blk->size = read_1_byte (abfd, info_ptr); |
11368 | info_ptr += 1; | |
11369 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
11370 | info_ptr += blk->size; | |
11371 | DW_BLOCK (attr) = blk; | |
11372 | break; | |
11373 | case DW_FORM_data1: | |
11374 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
11375 | info_ptr += 1; | |
11376 | break; | |
11377 | case DW_FORM_flag: | |
11378 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
11379 | info_ptr += 1; | |
11380 | break; | |
2dc7f7b3 TT |
11381 | case DW_FORM_flag_present: |
11382 | DW_UNSND (attr) = 1; | |
11383 | break; | |
c906108c SS |
11384 | case DW_FORM_sdata: |
11385 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
11386 | info_ptr += bytes_read; | |
11387 | break; | |
11388 | case DW_FORM_udata: | |
11389 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
11390 | info_ptr += bytes_read; | |
11391 | break; | |
11392 | case DW_FORM_ref1: | |
4568ecf9 DE |
11393 | DW_UNSND (attr) = (cu->header.offset.sect_off |
11394 | + read_1_byte (abfd, info_ptr)); | |
c906108c SS |
11395 | info_ptr += 1; |
11396 | break; | |
11397 | case DW_FORM_ref2: | |
4568ecf9 DE |
11398 | DW_UNSND (attr) = (cu->header.offset.sect_off |
11399 | + read_2_bytes (abfd, info_ptr)); | |
c906108c SS |
11400 | info_ptr += 2; |
11401 | break; | |
11402 | case DW_FORM_ref4: | |
4568ecf9 DE |
11403 | DW_UNSND (attr) = (cu->header.offset.sect_off |
11404 | + read_4_bytes (abfd, info_ptr)); | |
c906108c SS |
11405 | info_ptr += 4; |
11406 | break; | |
613e1657 | 11407 | case DW_FORM_ref8: |
4568ecf9 DE |
11408 | DW_UNSND (attr) = (cu->header.offset.sect_off |
11409 | + read_8_bytes (abfd, info_ptr)); | |
613e1657 KB |
11410 | info_ptr += 8; |
11411 | break; | |
55f1336d | 11412 | case DW_FORM_ref_sig8: |
348e048f DE |
11413 | /* Convert the signature to something we can record in DW_UNSND |
11414 | for later lookup. | |
11415 | NOTE: This is NULL if the type wasn't found. */ | |
11416 | DW_SIGNATURED_TYPE (attr) = | |
e319fa28 | 11417 | lookup_signatured_type (read_8_bytes (abfd, info_ptr)); |
348e048f DE |
11418 | info_ptr += 8; |
11419 | break; | |
c906108c | 11420 | case DW_FORM_ref_udata: |
4568ecf9 DE |
11421 | DW_UNSND (attr) = (cu->header.offset.sect_off |
11422 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); | |
c906108c SS |
11423 | info_ptr += bytes_read; |
11424 | break; | |
c906108c | 11425 | case DW_FORM_indirect: |
a8329558 KW |
11426 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
11427 | info_ptr += bytes_read; | |
dee91e82 | 11428 | info_ptr = read_attribute_value (reader, attr, form, info_ptr); |
a8329558 | 11429 | break; |
3019eac3 DE |
11430 | case DW_FORM_GNU_addr_index: |
11431 | if (reader->dwo_file == NULL) | |
11432 | { | |
11433 | /* For now flag a hard error. | |
11434 | Later we can turn this into a complaint. */ | |
11435 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
11436 | dwarf_form_name (form), | |
11437 | bfd_get_filename (abfd)); | |
11438 | } | |
11439 | DW_ADDR (attr) = read_addr_index_from_leb128 (cu, info_ptr, &bytes_read); | |
11440 | info_ptr += bytes_read; | |
11441 | break; | |
11442 | case DW_FORM_GNU_str_index: | |
11443 | if (reader->dwo_file == NULL) | |
11444 | { | |
11445 | /* For now flag a hard error. | |
11446 | Later we can turn this into a complaint if warranted. */ | |
11447 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
11448 | dwarf_form_name (form), | |
11449 | bfd_get_filename (abfd)); | |
11450 | } | |
11451 | { | |
11452 | ULONGEST str_index = | |
11453 | read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
11454 | ||
11455 | DW_STRING (attr) = read_str_index (reader, cu, str_index); | |
11456 | DW_STRING_IS_CANONICAL (attr) = 0; | |
11457 | info_ptr += bytes_read; | |
11458 | } | |
11459 | break; | |
c906108c | 11460 | default: |
8a3fe4f8 | 11461 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
11462 | dwarf_form_name (form), |
11463 | bfd_get_filename (abfd)); | |
c906108c | 11464 | } |
28e94949 JB |
11465 | |
11466 | /* We have seen instances where the compiler tried to emit a byte | |
11467 | size attribute of -1 which ended up being encoded as an unsigned | |
11468 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
11469 | an object of this size seems pretty unlikely so we can relatively | |
11470 | safely treat these cases as if the size attribute was invalid and | |
11471 | treat them as zero by default. */ | |
11472 | if (attr->name == DW_AT_byte_size | |
11473 | && form == DW_FORM_data4 | |
11474 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
11475 | { |
11476 | complaint | |
11477 | (&symfile_complaints, | |
43bbcdc2 PH |
11478 | _("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
11479 | hex_string (DW_UNSND (attr))); | |
01c66ae6 JB |
11480 | DW_UNSND (attr) = 0; |
11481 | } | |
28e94949 | 11482 | |
c906108c SS |
11483 | return info_ptr; |
11484 | } | |
11485 | ||
a8329558 KW |
11486 | /* Read an attribute described by an abbreviated attribute. */ |
11487 | ||
fe1b8b76 | 11488 | static gdb_byte * |
dee91e82 DE |
11489 | read_attribute (const struct die_reader_specs *reader, |
11490 | struct attribute *attr, struct attr_abbrev *abbrev, | |
11491 | gdb_byte *info_ptr) | |
a8329558 KW |
11492 | { |
11493 | attr->name = abbrev->name; | |
dee91e82 | 11494 | return read_attribute_value (reader, attr, abbrev->form, info_ptr); |
a8329558 KW |
11495 | } |
11496 | ||
0963b4bd | 11497 | /* Read dwarf information from a buffer. */ |
c906108c SS |
11498 | |
11499 | static unsigned int | |
fe1b8b76 | 11500 | read_1_byte (bfd *abfd, gdb_byte *buf) |
c906108c | 11501 | { |
fe1b8b76 | 11502 | return bfd_get_8 (abfd, buf); |
c906108c SS |
11503 | } |
11504 | ||
11505 | static int | |
fe1b8b76 | 11506 | read_1_signed_byte (bfd *abfd, gdb_byte *buf) |
c906108c | 11507 | { |
fe1b8b76 | 11508 | return bfd_get_signed_8 (abfd, buf); |
c906108c SS |
11509 | } |
11510 | ||
11511 | static unsigned int | |
fe1b8b76 | 11512 | read_2_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 11513 | { |
fe1b8b76 | 11514 | return bfd_get_16 (abfd, buf); |
c906108c SS |
11515 | } |
11516 | ||
21ae7a4d JK |
11517 | static int |
11518 | read_2_signed_bytes (bfd *abfd, gdb_byte *buf) | |
11519 | { | |
11520 | return bfd_get_signed_16 (abfd, buf); | |
11521 | } | |
11522 | ||
c906108c | 11523 | static unsigned int |
fe1b8b76 | 11524 | read_4_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 11525 | { |
fe1b8b76 | 11526 | return bfd_get_32 (abfd, buf); |
c906108c SS |
11527 | } |
11528 | ||
21ae7a4d JK |
11529 | static int |
11530 | read_4_signed_bytes (bfd *abfd, gdb_byte *buf) | |
11531 | { | |
11532 | return bfd_get_signed_32 (abfd, buf); | |
11533 | } | |
11534 | ||
93311388 | 11535 | static ULONGEST |
fe1b8b76 | 11536 | read_8_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 11537 | { |
fe1b8b76 | 11538 | return bfd_get_64 (abfd, buf); |
c906108c SS |
11539 | } |
11540 | ||
11541 | static CORE_ADDR | |
fe1b8b76 | 11542 | read_address (bfd *abfd, gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 11543 | unsigned int *bytes_read) |
c906108c | 11544 | { |
e7c27a73 | 11545 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
11546 | CORE_ADDR retval = 0; |
11547 | ||
107d2387 | 11548 | if (cu_header->signed_addr_p) |
c906108c | 11549 | { |
107d2387 AC |
11550 | switch (cu_header->addr_size) |
11551 | { | |
11552 | case 2: | |
fe1b8b76 | 11553 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
11554 | break; |
11555 | case 4: | |
fe1b8b76 | 11556 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
11557 | break; |
11558 | case 8: | |
fe1b8b76 | 11559 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
11560 | break; |
11561 | default: | |
8e65ff28 | 11562 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 11563 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 11564 | bfd_get_filename (abfd)); |
107d2387 AC |
11565 | } |
11566 | } | |
11567 | else | |
11568 | { | |
11569 | switch (cu_header->addr_size) | |
11570 | { | |
11571 | case 2: | |
fe1b8b76 | 11572 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
11573 | break; |
11574 | case 4: | |
fe1b8b76 | 11575 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
11576 | break; |
11577 | case 8: | |
fe1b8b76 | 11578 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
11579 | break; |
11580 | default: | |
8e65ff28 | 11581 | internal_error (__FILE__, __LINE__, |
a73c6dcd MS |
11582 | _("read_address: bad switch, " |
11583 | "unsigned [in module %s]"), | |
659b0389 | 11584 | bfd_get_filename (abfd)); |
107d2387 | 11585 | } |
c906108c | 11586 | } |
64367e0a | 11587 | |
107d2387 AC |
11588 | *bytes_read = cu_header->addr_size; |
11589 | return retval; | |
c906108c SS |
11590 | } |
11591 | ||
f7ef9339 | 11592 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
11593 | specification allows the initial length to take up either 4 bytes |
11594 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
11595 | bytes describe the length and all offsets will be 8 bytes in length | |
11596 | instead of 4. | |
11597 | ||
f7ef9339 KB |
11598 | An older, non-standard 64-bit format is also handled by this |
11599 | function. The older format in question stores the initial length | |
11600 | as an 8-byte quantity without an escape value. Lengths greater | |
11601 | than 2^32 aren't very common which means that the initial 4 bytes | |
11602 | is almost always zero. Since a length value of zero doesn't make | |
11603 | sense for the 32-bit format, this initial zero can be considered to | |
11604 | be an escape value which indicates the presence of the older 64-bit | |
11605 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
11606 | greater than 4GB. If it becomes necessary to handle lengths |
11607 | somewhat larger than 4GB, we could allow other small values (such | |
11608 | as the non-sensical values of 1, 2, and 3) to also be used as | |
11609 | escape values indicating the presence of the old format. | |
f7ef9339 | 11610 | |
917c78fc MK |
11611 | The value returned via bytes_read should be used to increment the |
11612 | relevant pointer after calling read_initial_length(). | |
c764a876 | 11613 | |
613e1657 KB |
11614 | [ Note: read_initial_length() and read_offset() are based on the |
11615 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 11616 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
11617 | from: |
11618 | ||
f7ef9339 | 11619 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
6e70227d | 11620 | |
613e1657 KB |
11621 | This document is only a draft and is subject to change. (So beware.) |
11622 | ||
f7ef9339 | 11623 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
11624 | determined empirically by examining 64-bit ELF files produced by |
11625 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
11626 | |
11627 | - Kevin, July 16, 2002 | |
613e1657 KB |
11628 | ] */ |
11629 | ||
11630 | static LONGEST | |
c764a876 | 11631 | read_initial_length (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read) |
613e1657 | 11632 | { |
fe1b8b76 | 11633 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 11634 | |
dd373385 | 11635 | if (length == 0xffffffff) |
613e1657 | 11636 | { |
fe1b8b76 | 11637 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 11638 | *bytes_read = 12; |
613e1657 | 11639 | } |
dd373385 | 11640 | else if (length == 0) |
f7ef9339 | 11641 | { |
dd373385 | 11642 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 11643 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 11644 | *bytes_read = 8; |
f7ef9339 | 11645 | } |
613e1657 KB |
11646 | else |
11647 | { | |
11648 | *bytes_read = 4; | |
613e1657 KB |
11649 | } |
11650 | ||
c764a876 DE |
11651 | return length; |
11652 | } | |
dd373385 | 11653 | |
c764a876 DE |
11654 | /* Cover function for read_initial_length. |
11655 | Returns the length of the object at BUF, and stores the size of the | |
11656 | initial length in *BYTES_READ and stores the size that offsets will be in | |
11657 | *OFFSET_SIZE. | |
11658 | If the initial length size is not equivalent to that specified in | |
11659 | CU_HEADER then issue a complaint. | |
11660 | This is useful when reading non-comp-unit headers. */ | |
dd373385 | 11661 | |
c764a876 DE |
11662 | static LONGEST |
11663 | read_checked_initial_length_and_offset (bfd *abfd, gdb_byte *buf, | |
11664 | const struct comp_unit_head *cu_header, | |
11665 | unsigned int *bytes_read, | |
11666 | unsigned int *offset_size) | |
11667 | { | |
11668 | LONGEST length = read_initial_length (abfd, buf, bytes_read); | |
11669 | ||
11670 | gdb_assert (cu_header->initial_length_size == 4 | |
11671 | || cu_header->initial_length_size == 8 | |
11672 | || cu_header->initial_length_size == 12); | |
11673 | ||
11674 | if (cu_header->initial_length_size != *bytes_read) | |
11675 | complaint (&symfile_complaints, | |
11676 | _("intermixed 32-bit and 64-bit DWARF sections")); | |
dd373385 | 11677 | |
c764a876 | 11678 | *offset_size = (*bytes_read == 4) ? 4 : 8; |
dd373385 | 11679 | return length; |
613e1657 KB |
11680 | } |
11681 | ||
11682 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 11683 | given by cu_header->offset_size. */ |
613e1657 KB |
11684 | |
11685 | static LONGEST | |
fe1b8b76 | 11686 | read_offset (bfd *abfd, gdb_byte *buf, const struct comp_unit_head *cu_header, |
891d2f0b | 11687 | unsigned int *bytes_read) |
c764a876 DE |
11688 | { |
11689 | LONGEST offset = read_offset_1 (abfd, buf, cu_header->offset_size); | |
9a619af0 | 11690 | |
c764a876 DE |
11691 | *bytes_read = cu_header->offset_size; |
11692 | return offset; | |
11693 | } | |
11694 | ||
11695 | /* Read an offset from the data stream. */ | |
11696 | ||
11697 | static LONGEST | |
11698 | read_offset_1 (bfd *abfd, gdb_byte *buf, unsigned int offset_size) | |
613e1657 KB |
11699 | { |
11700 | LONGEST retval = 0; | |
11701 | ||
c764a876 | 11702 | switch (offset_size) |
613e1657 KB |
11703 | { |
11704 | case 4: | |
fe1b8b76 | 11705 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
11706 | break; |
11707 | case 8: | |
fe1b8b76 | 11708 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
11709 | break; |
11710 | default: | |
8e65ff28 | 11711 | internal_error (__FILE__, __LINE__, |
c764a876 | 11712 | _("read_offset_1: bad switch [in module %s]"), |
659b0389 | 11713 | bfd_get_filename (abfd)); |
613e1657 KB |
11714 | } |
11715 | ||
917c78fc | 11716 | return retval; |
613e1657 KB |
11717 | } |
11718 | ||
fe1b8b76 JB |
11719 | static gdb_byte * |
11720 | read_n_bytes (bfd *abfd, gdb_byte *buf, unsigned int size) | |
c906108c SS |
11721 | { |
11722 | /* If the size of a host char is 8 bits, we can return a pointer | |
11723 | to the buffer, otherwise we have to copy the data to a buffer | |
11724 | allocated on the temporary obstack. */ | |
4bdf3d34 | 11725 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 11726 | return buf; |
c906108c SS |
11727 | } |
11728 | ||
11729 | static char * | |
9b1c24c8 | 11730 | read_direct_string (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c SS |
11731 | { |
11732 | /* If the size of a host char is 8 bits, we can return a pointer | |
11733 | to the string, otherwise we have to copy the string to a buffer | |
11734 | allocated on the temporary obstack. */ | |
4bdf3d34 | 11735 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
11736 | if (*buf == '\0') |
11737 | { | |
11738 | *bytes_read_ptr = 1; | |
11739 | return NULL; | |
11740 | } | |
fe1b8b76 JB |
11741 | *bytes_read_ptr = strlen ((char *) buf) + 1; |
11742 | return (char *) buf; | |
4bdf3d34 JJ |
11743 | } |
11744 | ||
11745 | static char * | |
cf2c3c16 | 11746 | read_indirect_string_at_offset (bfd *abfd, LONGEST str_offset) |
4bdf3d34 | 11747 | { |
be391dca | 11748 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwarf2_per_objfile->str); |
dce234bc | 11749 | if (dwarf2_per_objfile->str.buffer == NULL) |
cf2c3c16 TT |
11750 | error (_("DW_FORM_strp used without .debug_str section [in module %s]"), |
11751 | bfd_get_filename (abfd)); | |
dce234bc | 11752 | if (str_offset >= dwarf2_per_objfile->str.size) |
cf2c3c16 TT |
11753 | error (_("DW_FORM_strp pointing outside of " |
11754 | ".debug_str section [in module %s]"), | |
11755 | bfd_get_filename (abfd)); | |
4bdf3d34 | 11756 | gdb_assert (HOST_CHAR_BIT == 8); |
dce234bc | 11757 | if (dwarf2_per_objfile->str.buffer[str_offset] == '\0') |
4bdf3d34 | 11758 | return NULL; |
dce234bc | 11759 | return (char *) (dwarf2_per_objfile->str.buffer + str_offset); |
c906108c SS |
11760 | } |
11761 | ||
cf2c3c16 TT |
11762 | static char * |
11763 | read_indirect_string (bfd *abfd, gdb_byte *buf, | |
11764 | const struct comp_unit_head *cu_header, | |
11765 | unsigned int *bytes_read_ptr) | |
11766 | { | |
11767 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
11768 | ||
11769 | return read_indirect_string_at_offset (abfd, str_offset); | |
11770 | } | |
11771 | ||
12df843f | 11772 | static ULONGEST |
fe1b8b76 | 11773 | read_unsigned_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 11774 | { |
12df843f | 11775 | ULONGEST result; |
ce5d95e1 | 11776 | unsigned int num_read; |
c906108c SS |
11777 | int i, shift; |
11778 | unsigned char byte; | |
11779 | ||
11780 | result = 0; | |
11781 | shift = 0; | |
11782 | num_read = 0; | |
11783 | i = 0; | |
11784 | while (1) | |
11785 | { | |
fe1b8b76 | 11786 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
11787 | buf++; |
11788 | num_read++; | |
12df843f | 11789 | result |= ((ULONGEST) (byte & 127) << shift); |
c906108c SS |
11790 | if ((byte & 128) == 0) |
11791 | { | |
11792 | break; | |
11793 | } | |
11794 | shift += 7; | |
11795 | } | |
11796 | *bytes_read_ptr = num_read; | |
11797 | return result; | |
11798 | } | |
11799 | ||
12df843f | 11800 | static LONGEST |
fe1b8b76 | 11801 | read_signed_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 11802 | { |
12df843f | 11803 | LONGEST result; |
77e0b926 | 11804 | int i, shift, num_read; |
c906108c SS |
11805 | unsigned char byte; |
11806 | ||
11807 | result = 0; | |
11808 | shift = 0; | |
c906108c SS |
11809 | num_read = 0; |
11810 | i = 0; | |
11811 | while (1) | |
11812 | { | |
fe1b8b76 | 11813 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
11814 | buf++; |
11815 | num_read++; | |
12df843f | 11816 | result |= ((LONGEST) (byte & 127) << shift); |
c906108c SS |
11817 | shift += 7; |
11818 | if ((byte & 128) == 0) | |
11819 | { | |
11820 | break; | |
11821 | } | |
11822 | } | |
77e0b926 | 11823 | if ((shift < 8 * sizeof (result)) && (byte & 0x40)) |
12df843f | 11824 | result |= -(((LONGEST) 1) << shift); |
c906108c SS |
11825 | *bytes_read_ptr = num_read; |
11826 | return result; | |
11827 | } | |
11828 | ||
3019eac3 DE |
11829 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
11830 | ADDR_BASE is the DW_AT_GNU_addr_base attribute or zero. | |
11831 | ADDR_SIZE is the size of addresses from the CU header. */ | |
11832 | ||
11833 | static CORE_ADDR | |
11834 | read_addr_index_1 (unsigned int addr_index, ULONGEST addr_base, int addr_size) | |
11835 | { | |
11836 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
11837 | bfd *abfd = objfile->obfd; | |
11838 | const gdb_byte *info_ptr; | |
11839 | ||
11840 | dwarf2_read_section (objfile, &dwarf2_per_objfile->addr); | |
11841 | if (dwarf2_per_objfile->addr.buffer == NULL) | |
11842 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), | |
11843 | objfile->name); | |
11844 | if (addr_base + addr_index * addr_size >= dwarf2_per_objfile->addr.size) | |
11845 | error (_("DW_FORM_addr_index pointing outside of " | |
11846 | ".debug_addr section [in module %s]"), | |
11847 | objfile->name); | |
11848 | info_ptr = (dwarf2_per_objfile->addr.buffer | |
11849 | + addr_base + addr_index * addr_size); | |
11850 | if (addr_size == 4) | |
11851 | return bfd_get_32 (abfd, info_ptr); | |
11852 | else | |
11853 | return bfd_get_64 (abfd, info_ptr); | |
11854 | } | |
11855 | ||
11856 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
11857 | ||
11858 | static CORE_ADDR | |
11859 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
11860 | { | |
11861 | return read_addr_index_1 (addr_index, cu->addr_base, cu->header.addr_size); | |
11862 | } | |
11863 | ||
11864 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
11865 | ||
11866 | static CORE_ADDR | |
11867 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, gdb_byte *info_ptr, | |
11868 | unsigned int *bytes_read) | |
11869 | { | |
11870 | bfd *abfd = cu->objfile->obfd; | |
11871 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
11872 | ||
11873 | return read_addr_index (cu, addr_index); | |
11874 | } | |
11875 | ||
11876 | /* Data structure to pass results from dwarf2_read_addr_index_reader | |
11877 | back to dwarf2_read_addr_index. */ | |
11878 | ||
11879 | struct dwarf2_read_addr_index_data | |
11880 | { | |
11881 | ULONGEST addr_base; | |
11882 | int addr_size; | |
11883 | }; | |
11884 | ||
11885 | /* die_reader_func for dwarf2_read_addr_index. */ | |
11886 | ||
11887 | static void | |
11888 | dwarf2_read_addr_index_reader (const struct die_reader_specs *reader, | |
11889 | gdb_byte *info_ptr, | |
11890 | struct die_info *comp_unit_die, | |
11891 | int has_children, | |
11892 | void *data) | |
11893 | { | |
11894 | struct dwarf2_cu *cu = reader->cu; | |
11895 | struct dwarf2_read_addr_index_data *aidata = | |
11896 | (struct dwarf2_read_addr_index_data *) data; | |
11897 | ||
11898 | aidata->addr_base = cu->addr_base; | |
11899 | aidata->addr_size = cu->header.addr_size; | |
11900 | } | |
11901 | ||
11902 | /* Given an index in .debug_addr, fetch the value. | |
11903 | NOTE: This can be called during dwarf expression evaluation, | |
11904 | long after the debug information has been read, and thus per_cu->cu | |
11905 | may no longer exist. */ | |
11906 | ||
11907 | CORE_ADDR | |
11908 | dwarf2_read_addr_index (struct dwarf2_per_cu_data *per_cu, | |
11909 | unsigned int addr_index) | |
11910 | { | |
11911 | struct objfile *objfile = per_cu->objfile; | |
11912 | struct dwarf2_cu *cu = per_cu->cu; | |
11913 | ULONGEST addr_base; | |
11914 | int addr_size; | |
11915 | ||
11916 | /* This is intended to be called from outside this file. */ | |
11917 | dw2_setup (objfile); | |
11918 | ||
11919 | /* We need addr_base and addr_size. | |
11920 | If we don't have PER_CU->cu, we have to get it. | |
11921 | Nasty, but the alternative is storing the needed info in PER_CU, | |
11922 | which at this point doesn't seem justified: it's not clear how frequently | |
11923 | it would get used and it would increase the size of every PER_CU. | |
11924 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
11925 | so we're not in uncharted territory here. | |
11926 | Alas we need to be a bit more complicated as addr_base is contained | |
11927 | in the DIE. | |
11928 | ||
11929 | We don't need to read the entire CU(/TU). | |
11930 | We just need the header and top level die. | |
11931 | IWBN to use the aging mechanism to let us lazily later discard the CU. | |
11932 | See however init_cutu_and_read_dies_simple. */ | |
11933 | ||
11934 | if (cu != NULL) | |
11935 | { | |
11936 | addr_base = cu->addr_base; | |
11937 | addr_size = cu->header.addr_size; | |
11938 | } | |
11939 | else | |
11940 | { | |
11941 | struct dwarf2_read_addr_index_data aidata; | |
11942 | ||
11943 | init_cutu_and_read_dies_simple (per_cu, dwarf2_read_addr_index_reader, | |
11944 | &aidata); | |
11945 | addr_base = aidata.addr_base; | |
11946 | addr_size = aidata.addr_size; | |
11947 | } | |
11948 | ||
11949 | return read_addr_index_1 (addr_index, addr_base, addr_size); | |
11950 | } | |
11951 | ||
11952 | /* Given a DW_AT_str_index, fetch the string. */ | |
11953 | ||
11954 | static char * | |
11955 | read_str_index (const struct die_reader_specs *reader, | |
11956 | struct dwarf2_cu *cu, ULONGEST str_index) | |
11957 | { | |
11958 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
11959 | const char *dwo_name = objfile->name; | |
11960 | bfd *abfd = objfile->obfd; | |
11961 | struct dwo_sections *sections = &reader->dwo_file->sections; | |
11962 | gdb_byte *info_ptr; | |
11963 | ULONGEST str_offset; | |
11964 | ||
11965 | dwarf2_read_section (objfile, §ions->str); | |
11966 | dwarf2_read_section (objfile, §ions->str_offsets); | |
11967 | if (sections->str.buffer == NULL) | |
11968 | error (_("DW_FORM_str_index used without .debug_str.dwo section" | |
11969 | " in CU at offset 0x%lx [in module %s]"), | |
11970 | (long) cu->header.offset.sect_off, dwo_name); | |
11971 | if (sections->str_offsets.buffer == NULL) | |
11972 | error (_("DW_FORM_str_index used without .debug_str_offsets.dwo section" | |
11973 | " in CU at offset 0x%lx [in module %s]"), | |
11974 | (long) cu->header.offset.sect_off, dwo_name); | |
11975 | if (str_index * cu->header.offset_size >= sections->str_offsets.size) | |
11976 | error (_("DW_FORM_str_index pointing outside of .debug_str_offsets.dwo" | |
11977 | " section in CU at offset 0x%lx [in module %s]"), | |
11978 | (long) cu->header.offset.sect_off, dwo_name); | |
11979 | info_ptr = (sections->str_offsets.buffer | |
11980 | + str_index * cu->header.offset_size); | |
11981 | if (cu->header.offset_size == 4) | |
11982 | str_offset = bfd_get_32 (abfd, info_ptr); | |
11983 | else | |
11984 | str_offset = bfd_get_64 (abfd, info_ptr); | |
11985 | if (str_offset >= sections->str.size) | |
11986 | error (_("Offset from DW_FORM_str_index pointing outside of" | |
11987 | " .debug_str.dwo section in CU at offset 0x%lx [in module %s]"), | |
11988 | (long) cu->header.offset.sect_off, dwo_name); | |
11989 | return (char *) (sections->str.buffer + str_offset); | |
11990 | } | |
11991 | ||
4bb7a0a7 DJ |
11992 | /* Return a pointer to just past the end of an LEB128 number in BUF. */ |
11993 | ||
fe1b8b76 JB |
11994 | static gdb_byte * |
11995 | skip_leb128 (bfd *abfd, gdb_byte *buf) | |
4bb7a0a7 DJ |
11996 | { |
11997 | int byte; | |
11998 | ||
11999 | while (1) | |
12000 | { | |
fe1b8b76 | 12001 | byte = bfd_get_8 (abfd, buf); |
4bb7a0a7 DJ |
12002 | buf++; |
12003 | if ((byte & 128) == 0) | |
12004 | return buf; | |
12005 | } | |
12006 | } | |
12007 | ||
3019eac3 DE |
12008 | /* Return the length of an LEB128 number in BUF. */ |
12009 | ||
12010 | static int | |
12011 | leb128_size (const gdb_byte *buf) | |
12012 | { | |
12013 | const gdb_byte *begin = buf; | |
12014 | gdb_byte byte; | |
12015 | ||
12016 | while (1) | |
12017 | { | |
12018 | byte = *buf++; | |
12019 | if ((byte & 128) == 0) | |
12020 | return buf - begin; | |
12021 | } | |
12022 | } | |
12023 | ||
c906108c | 12024 | static void |
e142c38c | 12025 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
12026 | { |
12027 | switch (lang) | |
12028 | { | |
12029 | case DW_LANG_C89: | |
76bee0cc | 12030 | case DW_LANG_C99: |
c906108c | 12031 | case DW_LANG_C: |
e142c38c | 12032 | cu->language = language_c; |
c906108c SS |
12033 | break; |
12034 | case DW_LANG_C_plus_plus: | |
e142c38c | 12035 | cu->language = language_cplus; |
c906108c | 12036 | break; |
6aecb9c2 JB |
12037 | case DW_LANG_D: |
12038 | cu->language = language_d; | |
12039 | break; | |
c906108c SS |
12040 | case DW_LANG_Fortran77: |
12041 | case DW_LANG_Fortran90: | |
b21b22e0 | 12042 | case DW_LANG_Fortran95: |
e142c38c | 12043 | cu->language = language_fortran; |
c906108c | 12044 | break; |
a766d390 DE |
12045 | case DW_LANG_Go: |
12046 | cu->language = language_go; | |
12047 | break; | |
c906108c | 12048 | case DW_LANG_Mips_Assembler: |
e142c38c | 12049 | cu->language = language_asm; |
c906108c | 12050 | break; |
bebd888e | 12051 | case DW_LANG_Java: |
e142c38c | 12052 | cu->language = language_java; |
bebd888e | 12053 | break; |
c906108c | 12054 | case DW_LANG_Ada83: |
8aaf0b47 | 12055 | case DW_LANG_Ada95: |
bc5f45f8 JB |
12056 | cu->language = language_ada; |
12057 | break; | |
72019c9c GM |
12058 | case DW_LANG_Modula2: |
12059 | cu->language = language_m2; | |
12060 | break; | |
fe8e67fd PM |
12061 | case DW_LANG_Pascal83: |
12062 | cu->language = language_pascal; | |
12063 | break; | |
22566fbd DJ |
12064 | case DW_LANG_ObjC: |
12065 | cu->language = language_objc; | |
12066 | break; | |
c906108c SS |
12067 | case DW_LANG_Cobol74: |
12068 | case DW_LANG_Cobol85: | |
c906108c | 12069 | default: |
e142c38c | 12070 | cu->language = language_minimal; |
c906108c SS |
12071 | break; |
12072 | } | |
e142c38c | 12073 | cu->language_defn = language_def (cu->language); |
c906108c SS |
12074 | } |
12075 | ||
12076 | /* Return the named attribute or NULL if not there. */ | |
12077 | ||
12078 | static struct attribute * | |
e142c38c | 12079 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 12080 | { |
a48e046c | 12081 | for (;;) |
c906108c | 12082 | { |
a48e046c TT |
12083 | unsigned int i; |
12084 | struct attribute *spec = NULL; | |
12085 | ||
12086 | for (i = 0; i < die->num_attrs; ++i) | |
12087 | { | |
12088 | if (die->attrs[i].name == name) | |
12089 | return &die->attrs[i]; | |
12090 | if (die->attrs[i].name == DW_AT_specification | |
12091 | || die->attrs[i].name == DW_AT_abstract_origin) | |
12092 | spec = &die->attrs[i]; | |
12093 | } | |
12094 | ||
12095 | if (!spec) | |
12096 | break; | |
c906108c | 12097 | |
f2f0e013 | 12098 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 12099 | } |
c5aa993b | 12100 | |
c906108c SS |
12101 | return NULL; |
12102 | } | |
12103 | ||
348e048f DE |
12104 | /* Return the named attribute or NULL if not there, |
12105 | but do not follow DW_AT_specification, etc. | |
12106 | This is for use in contexts where we're reading .debug_types dies. | |
12107 | Following DW_AT_specification, DW_AT_abstract_origin will take us | |
12108 | back up the chain, and we want to go down. */ | |
12109 | ||
12110 | static struct attribute * | |
12111 | dwarf2_attr_no_follow (struct die_info *die, unsigned int name, | |
12112 | struct dwarf2_cu *cu) | |
12113 | { | |
12114 | unsigned int i; | |
12115 | ||
12116 | for (i = 0; i < die->num_attrs; ++i) | |
12117 | if (die->attrs[i].name == name) | |
12118 | return &die->attrs[i]; | |
12119 | ||
12120 | return NULL; | |
12121 | } | |
12122 | ||
05cf31d1 JB |
12123 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
12124 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 12125 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
12126 | |
12127 | static int | |
12128 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
12129 | { | |
12130 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
12131 | ||
12132 | return (attr && DW_UNSND (attr)); | |
12133 | } | |
12134 | ||
3ca72b44 | 12135 | static int |
e142c38c | 12136 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 12137 | { |
05cf31d1 JB |
12138 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
12139 | which value is non-zero. However, we have to be careful with | |
12140 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
12141 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
12142 | end up accidently finding a declaration attribute that belongs | |
12143 | to a different DIE referenced by the specification attribute, | |
12144 | even though the given DIE does not have a declaration attribute. */ | |
12145 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
12146 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
12147 | } |
12148 | ||
63d06c5c | 12149 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 12150 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
12151 | containing the return value on output. If there is no |
12152 | specification, but there is an abstract origin, that is | |
12153 | returned. */ | |
63d06c5c DC |
12154 | |
12155 | static struct die_info * | |
f2f0e013 | 12156 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 12157 | { |
f2f0e013 DJ |
12158 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
12159 | *spec_cu); | |
63d06c5c | 12160 | |
edb3359d DJ |
12161 | if (spec_attr == NULL) |
12162 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
12163 | ||
63d06c5c DC |
12164 | if (spec_attr == NULL) |
12165 | return NULL; | |
12166 | else | |
f2f0e013 | 12167 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 12168 | } |
c906108c | 12169 | |
debd256d | 12170 | /* Free the line_header structure *LH, and any arrays and strings it |
ae2de4f8 DE |
12171 | refers to. |
12172 | NOTE: This is also used as a "cleanup" function. */ | |
12173 | ||
debd256d JB |
12174 | static void |
12175 | free_line_header (struct line_header *lh) | |
12176 | { | |
12177 | if (lh->standard_opcode_lengths) | |
a8bc7b56 | 12178 | xfree (lh->standard_opcode_lengths); |
debd256d JB |
12179 | |
12180 | /* Remember that all the lh->file_names[i].name pointers are | |
12181 | pointers into debug_line_buffer, and don't need to be freed. */ | |
12182 | if (lh->file_names) | |
a8bc7b56 | 12183 | xfree (lh->file_names); |
debd256d JB |
12184 | |
12185 | /* Similarly for the include directory names. */ | |
12186 | if (lh->include_dirs) | |
a8bc7b56 | 12187 | xfree (lh->include_dirs); |
debd256d | 12188 | |
a8bc7b56 | 12189 | xfree (lh); |
debd256d JB |
12190 | } |
12191 | ||
debd256d | 12192 | /* Add an entry to LH's include directory table. */ |
ae2de4f8 | 12193 | |
debd256d JB |
12194 | static void |
12195 | add_include_dir (struct line_header *lh, char *include_dir) | |
c906108c | 12196 | { |
debd256d JB |
12197 | /* Grow the array if necessary. */ |
12198 | if (lh->include_dirs_size == 0) | |
c5aa993b | 12199 | { |
debd256d JB |
12200 | lh->include_dirs_size = 1; /* for testing */ |
12201 | lh->include_dirs = xmalloc (lh->include_dirs_size | |
12202 | * sizeof (*lh->include_dirs)); | |
12203 | } | |
12204 | else if (lh->num_include_dirs >= lh->include_dirs_size) | |
12205 | { | |
12206 | lh->include_dirs_size *= 2; | |
12207 | lh->include_dirs = xrealloc (lh->include_dirs, | |
12208 | (lh->include_dirs_size | |
12209 | * sizeof (*lh->include_dirs))); | |
c5aa993b | 12210 | } |
c906108c | 12211 | |
debd256d JB |
12212 | lh->include_dirs[lh->num_include_dirs++] = include_dir; |
12213 | } | |
6e70227d | 12214 | |
debd256d | 12215 | /* Add an entry to LH's file name table. */ |
ae2de4f8 | 12216 | |
debd256d JB |
12217 | static void |
12218 | add_file_name (struct line_header *lh, | |
12219 | char *name, | |
12220 | unsigned int dir_index, | |
12221 | unsigned int mod_time, | |
12222 | unsigned int length) | |
12223 | { | |
12224 | struct file_entry *fe; | |
12225 | ||
12226 | /* Grow the array if necessary. */ | |
12227 | if (lh->file_names_size == 0) | |
12228 | { | |
12229 | lh->file_names_size = 1; /* for testing */ | |
12230 | lh->file_names = xmalloc (lh->file_names_size | |
12231 | * sizeof (*lh->file_names)); | |
12232 | } | |
12233 | else if (lh->num_file_names >= lh->file_names_size) | |
12234 | { | |
12235 | lh->file_names_size *= 2; | |
12236 | lh->file_names = xrealloc (lh->file_names, | |
12237 | (lh->file_names_size | |
12238 | * sizeof (*lh->file_names))); | |
12239 | } | |
12240 | ||
12241 | fe = &lh->file_names[lh->num_file_names++]; | |
12242 | fe->name = name; | |
12243 | fe->dir_index = dir_index; | |
12244 | fe->mod_time = mod_time; | |
12245 | fe->length = length; | |
aaa75496 | 12246 | fe->included_p = 0; |
cb1df416 | 12247 | fe->symtab = NULL; |
debd256d | 12248 | } |
6e70227d | 12249 | |
debd256d | 12250 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 12251 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 12252 | to a struct line_header, allocated using xmalloc. |
debd256d JB |
12253 | |
12254 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
12255 | the returned object point into the dwarf line section buffer, |
12256 | and must not be freed. */ | |
ae2de4f8 | 12257 | |
debd256d | 12258 | static struct line_header * |
3019eac3 | 12259 | dwarf_decode_line_header (unsigned int offset, struct dwarf2_cu *cu) |
debd256d JB |
12260 | { |
12261 | struct cleanup *back_to; | |
12262 | struct line_header *lh; | |
fe1b8b76 | 12263 | gdb_byte *line_ptr; |
c764a876 | 12264 | unsigned int bytes_read, offset_size; |
debd256d JB |
12265 | int i; |
12266 | char *cur_dir, *cur_file; | |
3019eac3 DE |
12267 | struct dwarf2_section_info *section; |
12268 | bfd *abfd; | |
12269 | ||
12270 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
12271 | DWO file. */ | |
12272 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
12273 | section = &cu->dwo_unit->dwo_file->sections.line; | |
12274 | else | |
12275 | section = &dwarf2_per_objfile->line; | |
debd256d | 12276 | |
3019eac3 DE |
12277 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); |
12278 | if (section->buffer == NULL) | |
debd256d | 12279 | { |
3019eac3 DE |
12280 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
12281 | complaint (&symfile_complaints, _("missing .debug_line.dwo section")); | |
12282 | else | |
12283 | complaint (&symfile_complaints, _("missing .debug_line section")); | |
debd256d JB |
12284 | return 0; |
12285 | } | |
12286 | ||
fceca515 DE |
12287 | /* We can't do this until we know the section is non-empty. |
12288 | Only then do we know we have such a section. */ | |
12289 | abfd = section->asection->owner; | |
12290 | ||
a738430d MK |
12291 | /* Make sure that at least there's room for the total_length field. |
12292 | That could be 12 bytes long, but we're just going to fudge that. */ | |
3019eac3 | 12293 | if (offset + 4 >= section->size) |
debd256d | 12294 | { |
4d3c2250 | 12295 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
12296 | return 0; |
12297 | } | |
12298 | ||
12299 | lh = xmalloc (sizeof (*lh)); | |
12300 | memset (lh, 0, sizeof (*lh)); | |
12301 | back_to = make_cleanup ((make_cleanup_ftype *) free_line_header, | |
12302 | (void *) lh); | |
12303 | ||
3019eac3 | 12304 | line_ptr = section->buffer + offset; |
debd256d | 12305 | |
a738430d | 12306 | /* Read in the header. */ |
6e70227d | 12307 | lh->total_length = |
c764a876 DE |
12308 | read_checked_initial_length_and_offset (abfd, line_ptr, &cu->header, |
12309 | &bytes_read, &offset_size); | |
debd256d | 12310 | line_ptr += bytes_read; |
3019eac3 | 12311 | if (line_ptr + lh->total_length > (section->buffer + section->size)) |
debd256d | 12312 | { |
4d3c2250 | 12313 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
12314 | return 0; |
12315 | } | |
12316 | lh->statement_program_end = line_ptr + lh->total_length; | |
12317 | lh->version = read_2_bytes (abfd, line_ptr); | |
12318 | line_ptr += 2; | |
c764a876 DE |
12319 | lh->header_length = read_offset_1 (abfd, line_ptr, offset_size); |
12320 | line_ptr += offset_size; | |
debd256d JB |
12321 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); |
12322 | line_ptr += 1; | |
2dc7f7b3 TT |
12323 | if (lh->version >= 4) |
12324 | { | |
12325 | lh->maximum_ops_per_instruction = read_1_byte (abfd, line_ptr); | |
12326 | line_ptr += 1; | |
12327 | } | |
12328 | else | |
12329 | lh->maximum_ops_per_instruction = 1; | |
12330 | ||
12331 | if (lh->maximum_ops_per_instruction == 0) | |
12332 | { | |
12333 | lh->maximum_ops_per_instruction = 1; | |
12334 | complaint (&symfile_complaints, | |
3e43a32a MS |
12335 | _("invalid maximum_ops_per_instruction " |
12336 | "in `.debug_line' section")); | |
2dc7f7b3 TT |
12337 | } |
12338 | ||
debd256d JB |
12339 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); |
12340 | line_ptr += 1; | |
12341 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
12342 | line_ptr += 1; | |
12343 | lh->line_range = read_1_byte (abfd, line_ptr); | |
12344 | line_ptr += 1; | |
12345 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
12346 | line_ptr += 1; | |
12347 | lh->standard_opcode_lengths | |
fe1b8b76 | 12348 | = xmalloc (lh->opcode_base * sizeof (lh->standard_opcode_lengths[0])); |
debd256d JB |
12349 | |
12350 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
12351 | for (i = 1; i < lh->opcode_base; ++i) | |
12352 | { | |
12353 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
12354 | line_ptr += 1; | |
12355 | } | |
12356 | ||
a738430d | 12357 | /* Read directory table. */ |
9b1c24c8 | 12358 | while ((cur_dir = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) |
debd256d JB |
12359 | { |
12360 | line_ptr += bytes_read; | |
12361 | add_include_dir (lh, cur_dir); | |
12362 | } | |
12363 | line_ptr += bytes_read; | |
12364 | ||
a738430d | 12365 | /* Read file name table. */ |
9b1c24c8 | 12366 | while ((cur_file = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) |
debd256d JB |
12367 | { |
12368 | unsigned int dir_index, mod_time, length; | |
12369 | ||
12370 | line_ptr += bytes_read; | |
12371 | dir_index = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
12372 | line_ptr += bytes_read; | |
12373 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
12374 | line_ptr += bytes_read; | |
12375 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
12376 | line_ptr += bytes_read; | |
12377 | ||
12378 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
12379 | } | |
12380 | line_ptr += bytes_read; | |
6e70227d | 12381 | lh->statement_program_start = line_ptr; |
debd256d | 12382 | |
3019eac3 | 12383 | if (line_ptr > (section->buffer + section->size)) |
4d3c2250 | 12384 | complaint (&symfile_complaints, |
3e43a32a MS |
12385 | _("line number info header doesn't " |
12386 | "fit in `.debug_line' section")); | |
debd256d JB |
12387 | |
12388 | discard_cleanups (back_to); | |
12389 | return lh; | |
12390 | } | |
c906108c | 12391 | |
c6da4cef DE |
12392 | /* Subroutine of dwarf_decode_lines to simplify it. |
12393 | Return the file name of the psymtab for included file FILE_INDEX | |
12394 | in line header LH of PST. | |
12395 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
12396 | If space for the result is malloc'd, it will be freed by a cleanup. | |
12397 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. */ | |
12398 | ||
12399 | static char * | |
12400 | psymtab_include_file_name (const struct line_header *lh, int file_index, | |
12401 | const struct partial_symtab *pst, | |
12402 | const char *comp_dir) | |
12403 | { | |
12404 | const struct file_entry fe = lh->file_names [file_index]; | |
12405 | char *include_name = fe.name; | |
12406 | char *include_name_to_compare = include_name; | |
12407 | char *dir_name = NULL; | |
72b9f47f TT |
12408 | const char *pst_filename; |
12409 | char *copied_name = NULL; | |
c6da4cef DE |
12410 | int file_is_pst; |
12411 | ||
12412 | if (fe.dir_index) | |
12413 | dir_name = lh->include_dirs[fe.dir_index - 1]; | |
12414 | ||
12415 | if (!IS_ABSOLUTE_PATH (include_name) | |
12416 | && (dir_name != NULL || comp_dir != NULL)) | |
12417 | { | |
12418 | /* Avoid creating a duplicate psymtab for PST. | |
12419 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
12420 | Before we do the comparison, however, we need to account | |
12421 | for DIR_NAME and COMP_DIR. | |
12422 | First prepend dir_name (if non-NULL). If we still don't | |
12423 | have an absolute path prepend comp_dir (if non-NULL). | |
12424 | However, the directory we record in the include-file's | |
12425 | psymtab does not contain COMP_DIR (to match the | |
12426 | corresponding symtab(s)). | |
12427 | ||
12428 | Example: | |
12429 | ||
12430 | bash$ cd /tmp | |
12431 | bash$ gcc -g ./hello.c | |
12432 | include_name = "hello.c" | |
12433 | dir_name = "." | |
12434 | DW_AT_comp_dir = comp_dir = "/tmp" | |
12435 | DW_AT_name = "./hello.c" */ | |
12436 | ||
12437 | if (dir_name != NULL) | |
12438 | { | |
12439 | include_name = concat (dir_name, SLASH_STRING, | |
12440 | include_name, (char *)NULL); | |
12441 | include_name_to_compare = include_name; | |
12442 | make_cleanup (xfree, include_name); | |
12443 | } | |
12444 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
12445 | { | |
12446 | include_name_to_compare = concat (comp_dir, SLASH_STRING, | |
12447 | include_name, (char *)NULL); | |
12448 | } | |
12449 | } | |
12450 | ||
12451 | pst_filename = pst->filename; | |
12452 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) | |
12453 | { | |
72b9f47f TT |
12454 | copied_name = concat (pst->dirname, SLASH_STRING, |
12455 | pst_filename, (char *)NULL); | |
12456 | pst_filename = copied_name; | |
c6da4cef DE |
12457 | } |
12458 | ||
1e3fad37 | 12459 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef DE |
12460 | |
12461 | if (include_name_to_compare != include_name) | |
12462 | xfree (include_name_to_compare); | |
72b9f47f TT |
12463 | if (copied_name != NULL) |
12464 | xfree (copied_name); | |
c6da4cef DE |
12465 | |
12466 | if (file_is_pst) | |
12467 | return NULL; | |
12468 | return include_name; | |
12469 | } | |
12470 | ||
c91513d8 PP |
12471 | /* Ignore this record_line request. */ |
12472 | ||
12473 | static void | |
12474 | noop_record_line (struct subfile *subfile, int line, CORE_ADDR pc) | |
12475 | { | |
12476 | return; | |
12477 | } | |
12478 | ||
f3f5162e DE |
12479 | /* Subroutine of dwarf_decode_lines to simplify it. |
12480 | Process the line number information in LH. */ | |
debd256d | 12481 | |
c906108c | 12482 | static void |
f3f5162e DE |
12483 | dwarf_decode_lines_1 (struct line_header *lh, const char *comp_dir, |
12484 | struct dwarf2_cu *cu, struct partial_symtab *pst) | |
c906108c | 12485 | { |
a8c50c1f | 12486 | gdb_byte *line_ptr, *extended_end; |
fe1b8b76 | 12487 | gdb_byte *line_end; |
a8c50c1f | 12488 | unsigned int bytes_read, extended_len; |
c906108c | 12489 | unsigned char op_code, extended_op, adj_opcode; |
e142c38c DJ |
12490 | CORE_ADDR baseaddr; |
12491 | struct objfile *objfile = cu->objfile; | |
f3f5162e | 12492 | bfd *abfd = objfile->obfd; |
fbf65064 | 12493 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
aaa75496 | 12494 | const int decode_for_pst_p = (pst != NULL); |
f3f5162e | 12495 | struct subfile *last_subfile = NULL; |
c91513d8 PP |
12496 | void (*p_record_line) (struct subfile *subfile, int line, CORE_ADDR pc) |
12497 | = record_line; | |
e142c38c DJ |
12498 | |
12499 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 12500 | |
debd256d JB |
12501 | line_ptr = lh->statement_program_start; |
12502 | line_end = lh->statement_program_end; | |
c906108c SS |
12503 | |
12504 | /* Read the statement sequences until there's nothing left. */ | |
12505 | while (line_ptr < line_end) | |
12506 | { | |
12507 | /* state machine registers */ | |
12508 | CORE_ADDR address = 0; | |
12509 | unsigned int file = 1; | |
12510 | unsigned int line = 1; | |
12511 | unsigned int column = 0; | |
debd256d | 12512 | int is_stmt = lh->default_is_stmt; |
c906108c SS |
12513 | int basic_block = 0; |
12514 | int end_sequence = 0; | |
fbf65064 | 12515 | CORE_ADDR addr; |
2dc7f7b3 | 12516 | unsigned char op_index = 0; |
c906108c | 12517 | |
aaa75496 | 12518 | if (!decode_for_pst_p && lh->num_file_names >= file) |
c906108c | 12519 | { |
aaa75496 | 12520 | /* Start a subfile for the current file of the state machine. */ |
debd256d JB |
12521 | /* lh->include_dirs and lh->file_names are 0-based, but the |
12522 | directory and file name numbers in the statement program | |
12523 | are 1-based. */ | |
12524 | struct file_entry *fe = &lh->file_names[file - 1]; | |
4f1520fb | 12525 | char *dir = NULL; |
a738430d | 12526 | |
debd256d JB |
12527 | if (fe->dir_index) |
12528 | dir = lh->include_dirs[fe->dir_index - 1]; | |
4f1520fb FR |
12529 | |
12530 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
c906108c SS |
12531 | } |
12532 | ||
a738430d | 12533 | /* Decode the table. */ |
c5aa993b | 12534 | while (!end_sequence) |
c906108c SS |
12535 | { |
12536 | op_code = read_1_byte (abfd, line_ptr); | |
12537 | line_ptr += 1; | |
59205f5a JB |
12538 | if (line_ptr > line_end) |
12539 | { | |
12540 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
12541 | break; | |
12542 | } | |
9aa1fe7e | 12543 | |
debd256d | 12544 | if (op_code >= lh->opcode_base) |
6e70227d | 12545 | { |
a738430d | 12546 | /* Special operand. */ |
debd256d | 12547 | adj_opcode = op_code - lh->opcode_base; |
2dc7f7b3 TT |
12548 | address += (((op_index + (adj_opcode / lh->line_range)) |
12549 | / lh->maximum_ops_per_instruction) | |
12550 | * lh->minimum_instruction_length); | |
12551 | op_index = ((op_index + (adj_opcode / lh->line_range)) | |
12552 | % lh->maximum_ops_per_instruction); | |
debd256d | 12553 | line += lh->line_base + (adj_opcode % lh->line_range); |
59205f5a | 12554 | if (lh->num_file_names < file || file == 0) |
25e43795 | 12555 | dwarf2_debug_line_missing_file_complaint (); |
2dc7f7b3 TT |
12556 | /* For now we ignore lines not starting on an |
12557 | instruction boundary. */ | |
12558 | else if (op_index == 0) | |
25e43795 DJ |
12559 | { |
12560 | lh->file_names[file - 1].included_p = 1; | |
ca5f395d | 12561 | if (!decode_for_pst_p && is_stmt) |
fbf65064 UW |
12562 | { |
12563 | if (last_subfile != current_subfile) | |
12564 | { | |
12565 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
12566 | if (last_subfile) | |
c91513d8 | 12567 | (*p_record_line) (last_subfile, 0, addr); |
fbf65064 UW |
12568 | last_subfile = current_subfile; |
12569 | } | |
25e43795 | 12570 | /* Append row to matrix using current values. */ |
7019d805 | 12571 | addr = gdbarch_addr_bits_remove (gdbarch, address); |
c91513d8 | 12572 | (*p_record_line) (current_subfile, line, addr); |
366da635 | 12573 | } |
25e43795 | 12574 | } |
ca5f395d | 12575 | basic_block = 0; |
9aa1fe7e GK |
12576 | } |
12577 | else switch (op_code) | |
c906108c SS |
12578 | { |
12579 | case DW_LNS_extended_op: | |
3e43a32a MS |
12580 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
12581 | &bytes_read); | |
473b7be6 | 12582 | line_ptr += bytes_read; |
a8c50c1f | 12583 | extended_end = line_ptr + extended_len; |
c906108c SS |
12584 | extended_op = read_1_byte (abfd, line_ptr); |
12585 | line_ptr += 1; | |
12586 | switch (extended_op) | |
12587 | { | |
12588 | case DW_LNE_end_sequence: | |
c91513d8 | 12589 | p_record_line = record_line; |
c906108c | 12590 | end_sequence = 1; |
c906108c SS |
12591 | break; |
12592 | case DW_LNE_set_address: | |
e7c27a73 | 12593 | address = read_address (abfd, line_ptr, cu, &bytes_read); |
c91513d8 PP |
12594 | |
12595 | if (address == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
12596 | { | |
12597 | /* This line table is for a function which has been | |
12598 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
12599 | ||
12600 | long line_offset | |
12601 | = line_ptr - dwarf2_per_objfile->line.buffer; | |
12602 | ||
12603 | complaint (&symfile_complaints, | |
12604 | _(".debug_line address at offset 0x%lx is 0 " | |
12605 | "[in module %s]"), | |
bb5ed363 | 12606 | line_offset, objfile->name); |
c91513d8 PP |
12607 | p_record_line = noop_record_line; |
12608 | } | |
12609 | ||
2dc7f7b3 | 12610 | op_index = 0; |
107d2387 AC |
12611 | line_ptr += bytes_read; |
12612 | address += baseaddr; | |
c906108c SS |
12613 | break; |
12614 | case DW_LNE_define_file: | |
debd256d JB |
12615 | { |
12616 | char *cur_file; | |
12617 | unsigned int dir_index, mod_time, length; | |
6e70227d | 12618 | |
3e43a32a MS |
12619 | cur_file = read_direct_string (abfd, line_ptr, |
12620 | &bytes_read); | |
debd256d JB |
12621 | line_ptr += bytes_read; |
12622 | dir_index = | |
12623 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
12624 | line_ptr += bytes_read; | |
12625 | mod_time = | |
12626 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
12627 | line_ptr += bytes_read; | |
12628 | length = | |
12629 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
12630 | line_ptr += bytes_read; | |
12631 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
12632 | } | |
c906108c | 12633 | break; |
d0c6ba3d CC |
12634 | case DW_LNE_set_discriminator: |
12635 | /* The discriminator is not interesting to the debugger; | |
12636 | just ignore it. */ | |
12637 | line_ptr = extended_end; | |
12638 | break; | |
c906108c | 12639 | default: |
4d3c2250 | 12640 | complaint (&symfile_complaints, |
e2e0b3e5 | 12641 | _("mangled .debug_line section")); |
debd256d | 12642 | return; |
c906108c | 12643 | } |
a8c50c1f DJ |
12644 | /* Make sure that we parsed the extended op correctly. If e.g. |
12645 | we expected a different address size than the producer used, | |
12646 | we may have read the wrong number of bytes. */ | |
12647 | if (line_ptr != extended_end) | |
12648 | { | |
12649 | complaint (&symfile_complaints, | |
12650 | _("mangled .debug_line section")); | |
12651 | return; | |
12652 | } | |
c906108c SS |
12653 | break; |
12654 | case DW_LNS_copy: | |
59205f5a | 12655 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
12656 | dwarf2_debug_line_missing_file_complaint (); |
12657 | else | |
366da635 | 12658 | { |
25e43795 | 12659 | lh->file_names[file - 1].included_p = 1; |
ca5f395d | 12660 | if (!decode_for_pst_p && is_stmt) |
fbf65064 UW |
12661 | { |
12662 | if (last_subfile != current_subfile) | |
12663 | { | |
12664 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
12665 | if (last_subfile) | |
c91513d8 | 12666 | (*p_record_line) (last_subfile, 0, addr); |
fbf65064 UW |
12667 | last_subfile = current_subfile; |
12668 | } | |
7019d805 | 12669 | addr = gdbarch_addr_bits_remove (gdbarch, address); |
c91513d8 | 12670 | (*p_record_line) (current_subfile, line, addr); |
fbf65064 | 12671 | } |
366da635 | 12672 | } |
c906108c SS |
12673 | basic_block = 0; |
12674 | break; | |
12675 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
12676 | { |
12677 | CORE_ADDR adjust | |
12678 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
12679 | ||
12680 | address += (((op_index + adjust) | |
12681 | / lh->maximum_ops_per_instruction) | |
12682 | * lh->minimum_instruction_length); | |
12683 | op_index = ((op_index + adjust) | |
12684 | % lh->maximum_ops_per_instruction); | |
12685 | line_ptr += bytes_read; | |
12686 | } | |
c906108c SS |
12687 | break; |
12688 | case DW_LNS_advance_line: | |
12689 | line += read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
12690 | line_ptr += bytes_read; | |
12691 | break; | |
12692 | case DW_LNS_set_file: | |
debd256d | 12693 | { |
a738430d MK |
12694 | /* The arrays lh->include_dirs and lh->file_names are |
12695 | 0-based, but the directory and file name numbers in | |
12696 | the statement program are 1-based. */ | |
debd256d | 12697 | struct file_entry *fe; |
4f1520fb | 12698 | char *dir = NULL; |
a738430d | 12699 | |
debd256d JB |
12700 | file = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
12701 | line_ptr += bytes_read; | |
59205f5a | 12702 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
12703 | dwarf2_debug_line_missing_file_complaint (); |
12704 | else | |
12705 | { | |
12706 | fe = &lh->file_names[file - 1]; | |
12707 | if (fe->dir_index) | |
12708 | dir = lh->include_dirs[fe->dir_index - 1]; | |
12709 | if (!decode_for_pst_p) | |
12710 | { | |
12711 | last_subfile = current_subfile; | |
12712 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
12713 | } | |
12714 | } | |
debd256d | 12715 | } |
c906108c SS |
12716 | break; |
12717 | case DW_LNS_set_column: | |
12718 | column = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
12719 | line_ptr += bytes_read; | |
12720 | break; | |
12721 | case DW_LNS_negate_stmt: | |
12722 | is_stmt = (!is_stmt); | |
12723 | break; | |
12724 | case DW_LNS_set_basic_block: | |
12725 | basic_block = 1; | |
12726 | break; | |
c2c6d25f JM |
12727 | /* Add to the address register of the state machine the |
12728 | address increment value corresponding to special opcode | |
a738430d MK |
12729 | 255. I.e., this value is scaled by the minimum |
12730 | instruction length since special opcode 255 would have | |
b021a221 | 12731 | scaled the increment. */ |
c906108c | 12732 | case DW_LNS_const_add_pc: |
2dc7f7b3 TT |
12733 | { |
12734 | CORE_ADDR adjust = (255 - lh->opcode_base) / lh->line_range; | |
12735 | ||
12736 | address += (((op_index + adjust) | |
12737 | / lh->maximum_ops_per_instruction) | |
12738 | * lh->minimum_instruction_length); | |
12739 | op_index = ((op_index + adjust) | |
12740 | % lh->maximum_ops_per_instruction); | |
12741 | } | |
c906108c SS |
12742 | break; |
12743 | case DW_LNS_fixed_advance_pc: | |
12744 | address += read_2_bytes (abfd, line_ptr); | |
2dc7f7b3 | 12745 | op_index = 0; |
c906108c SS |
12746 | line_ptr += 2; |
12747 | break; | |
9aa1fe7e | 12748 | default: |
a738430d MK |
12749 | { |
12750 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 12751 | int i; |
a738430d | 12752 | |
debd256d | 12753 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
12754 | { |
12755 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
12756 | line_ptr += bytes_read; | |
12757 | } | |
12758 | } | |
c906108c SS |
12759 | } |
12760 | } | |
59205f5a JB |
12761 | if (lh->num_file_names < file || file == 0) |
12762 | dwarf2_debug_line_missing_file_complaint (); | |
12763 | else | |
12764 | { | |
12765 | lh->file_names[file - 1].included_p = 1; | |
12766 | if (!decode_for_pst_p) | |
fbf65064 UW |
12767 | { |
12768 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
c91513d8 | 12769 | (*p_record_line) (current_subfile, 0, addr); |
fbf65064 | 12770 | } |
59205f5a | 12771 | } |
c906108c | 12772 | } |
f3f5162e DE |
12773 | } |
12774 | ||
12775 | /* Decode the Line Number Program (LNP) for the given line_header | |
12776 | structure and CU. The actual information extracted and the type | |
12777 | of structures created from the LNP depends on the value of PST. | |
12778 | ||
12779 | 1. If PST is NULL, then this procedure uses the data from the program | |
12780 | to create all necessary symbol tables, and their linetables. | |
12781 | ||
12782 | 2. If PST is not NULL, this procedure reads the program to determine | |
12783 | the list of files included by the unit represented by PST, and | |
12784 | builds all the associated partial symbol tables. | |
12785 | ||
12786 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
12787 | It is used for relative paths in the line table. | |
12788 | NOTE: When processing partial symtabs (pst != NULL), | |
12789 | comp_dir == pst->dirname. | |
12790 | ||
12791 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
12792 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
12793 | symtab we don't use it in the name of the psymtabs we create. | |
12794 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
12795 | A good testcase for this is mb-inline.exp. */ | |
12796 | ||
12797 | static void | |
12798 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
12799 | struct dwarf2_cu *cu, struct partial_symtab *pst, | |
12800 | int want_line_info) | |
12801 | { | |
12802 | struct objfile *objfile = cu->objfile; | |
12803 | const int decode_for_pst_p = (pst != NULL); | |
12804 | struct subfile *first_subfile = current_subfile; | |
12805 | ||
12806 | if (want_line_info) | |
12807 | dwarf_decode_lines_1 (lh, comp_dir, cu, pst); | |
aaa75496 JB |
12808 | |
12809 | if (decode_for_pst_p) | |
12810 | { | |
12811 | int file_index; | |
12812 | ||
12813 | /* Now that we're done scanning the Line Header Program, we can | |
12814 | create the psymtab of each included file. */ | |
12815 | for (file_index = 0; file_index < lh->num_file_names; file_index++) | |
12816 | if (lh->file_names[file_index].included_p == 1) | |
12817 | { | |
c6da4cef DE |
12818 | char *include_name = |
12819 | psymtab_include_file_name (lh, file_index, pst, comp_dir); | |
12820 | if (include_name != NULL) | |
aaa75496 JB |
12821 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
12822 | } | |
12823 | } | |
cb1df416 DJ |
12824 | else |
12825 | { | |
12826 | /* Make sure a symtab is created for every file, even files | |
12827 | which contain only variables (i.e. no code with associated | |
12828 | line numbers). */ | |
cb1df416 | 12829 | int i; |
cb1df416 DJ |
12830 | |
12831 | for (i = 0; i < lh->num_file_names; i++) | |
12832 | { | |
12833 | char *dir = NULL; | |
f3f5162e | 12834 | struct file_entry *fe; |
9a619af0 | 12835 | |
cb1df416 DJ |
12836 | fe = &lh->file_names[i]; |
12837 | if (fe->dir_index) | |
12838 | dir = lh->include_dirs[fe->dir_index - 1]; | |
12839 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
12840 | ||
12841 | /* Skip the main file; we don't need it, and it must be | |
12842 | allocated last, so that it will show up before the | |
12843 | non-primary symtabs in the objfile's symtab list. */ | |
12844 | if (current_subfile == first_subfile) | |
12845 | continue; | |
12846 | ||
12847 | if (current_subfile->symtab == NULL) | |
12848 | current_subfile->symtab = allocate_symtab (current_subfile->name, | |
bb5ed363 | 12849 | objfile); |
cb1df416 DJ |
12850 | fe->symtab = current_subfile->symtab; |
12851 | } | |
12852 | } | |
c906108c SS |
12853 | } |
12854 | ||
12855 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
12856 | DIRNAME the name of the source directory which contains FILENAME | |
4f1520fb FR |
12857 | or NULL if not known. COMP_DIR is the compilation directory for the |
12858 | linetable's compilation unit or NULL if not known. | |
c906108c SS |
12859 | This routine tries to keep line numbers from identical absolute and |
12860 | relative file names in a common subfile. | |
12861 | ||
12862 | Using the `list' example from the GDB testsuite, which resides in | |
12863 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
12864 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
12865 | ||
c5aa993b JM |
12866 | DW_AT_name: /srcdir/list0.c |
12867 | DW_AT_comp_dir: /compdir | |
357e46e7 | 12868 | files.files[0].name: list0.h |
c5aa993b | 12869 | files.files[0].dir: /srcdir |
357e46e7 | 12870 | files.files[1].name: list0.c |
c5aa993b | 12871 | files.files[1].dir: /srcdir |
c906108c SS |
12872 | |
12873 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
12874 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
12875 | start_subfile will ensure that this happens provided that we pass the | |
12876 | concatenation of files.files[1].dir and files.files[1].name as the | |
12877 | subfile's name. */ | |
c906108c SS |
12878 | |
12879 | static void | |
3e43a32a MS |
12880 | dwarf2_start_subfile (char *filename, const char *dirname, |
12881 | const char *comp_dir) | |
c906108c | 12882 | { |
4f1520fb FR |
12883 | char *fullname; |
12884 | ||
12885 | /* While reading the DIEs, we call start_symtab(DW_AT_name, DW_AT_comp_dir). | |
12886 | `start_symtab' will always pass the contents of DW_AT_comp_dir as | |
12887 | second argument to start_subfile. To be consistent, we do the | |
12888 | same here. In order not to lose the line information directory, | |
12889 | we concatenate it to the filename when it makes sense. | |
12890 | Note that the Dwarf3 standard says (speaking of filenames in line | |
12891 | information): ``The directory index is ignored for file names | |
12892 | that represent full path names''. Thus ignoring dirname in the | |
12893 | `else' branch below isn't an issue. */ | |
c906108c | 12894 | |
d5166ae1 | 12895 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
4f1520fb FR |
12896 | fullname = concat (dirname, SLASH_STRING, filename, (char *)NULL); |
12897 | else | |
12898 | fullname = filename; | |
c906108c | 12899 | |
4f1520fb FR |
12900 | start_subfile (fullname, comp_dir); |
12901 | ||
12902 | if (fullname != filename) | |
12903 | xfree (fullname); | |
c906108c SS |
12904 | } |
12905 | ||
4c2df51b DJ |
12906 | static void |
12907 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 12908 | struct dwarf2_cu *cu) |
4c2df51b | 12909 | { |
e7c27a73 DJ |
12910 | struct objfile *objfile = cu->objfile; |
12911 | struct comp_unit_head *cu_header = &cu->header; | |
12912 | ||
4c2df51b DJ |
12913 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
12914 | code here to turn a symbol with DW_AT_external and a | |
12915 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
12916 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
12917 | with some versions of binutils) where shared libraries could have | |
12918 | relocations against symbols in their debug information - the | |
12919 | minimal symbol would have the right address, but the debug info | |
12920 | would not. It's no longer necessary, because we will explicitly | |
12921 | apply relocations when we read in the debug information now. */ | |
12922 | ||
12923 | /* A DW_AT_location attribute with no contents indicates that a | |
12924 | variable has been optimized away. */ | |
12925 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
12926 | { | |
12927 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; | |
12928 | return; | |
12929 | } | |
12930 | ||
12931 | /* Handle one degenerate form of location expression specially, to | |
12932 | preserve GDB's previous behavior when section offsets are | |
3019eac3 DE |
12933 | specified. If this is just a DW_OP_addr or DW_OP_GNU_addr_index |
12934 | then mark this symbol as LOC_STATIC. */ | |
4c2df51b DJ |
12935 | |
12936 | if (attr_form_is_block (attr) | |
3019eac3 DE |
12937 | && ((DW_BLOCK (attr)->data[0] == DW_OP_addr |
12938 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size) | |
12939 | || (DW_BLOCK (attr)->data[0] == DW_OP_GNU_addr_index | |
12940 | && (DW_BLOCK (attr)->size | |
12941 | == 1 + leb128_size (&DW_BLOCK (attr)->data[1]))))) | |
4c2df51b | 12942 | { |
891d2f0b | 12943 | unsigned int dummy; |
4c2df51b | 12944 | |
3019eac3 DE |
12945 | if (DW_BLOCK (attr)->data[0] == DW_OP_addr) |
12946 | SYMBOL_VALUE_ADDRESS (sym) = | |
12947 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); | |
12948 | else | |
12949 | SYMBOL_VALUE_ADDRESS (sym) = | |
12950 | read_addr_index_from_leb128 (cu, DW_BLOCK (attr)->data + 1, &dummy); | |
907fc202 | 12951 | SYMBOL_CLASS (sym) = LOC_STATIC; |
4c2df51b DJ |
12952 | fixup_symbol_section (sym, objfile); |
12953 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
12954 | SYMBOL_SECTION (sym)); | |
4c2df51b DJ |
12955 | return; |
12956 | } | |
12957 | ||
12958 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
12959 | expression evaluator, and use LOC_COMPUTED only when necessary | |
12960 | (i.e. when the value of a register or memory location is | |
12961 | referenced, or a thread-local block, etc.). Then again, it might | |
12962 | not be worthwhile. I'm assuming that it isn't unless performance | |
12963 | or memory numbers show me otherwise. */ | |
12964 | ||
e7c27a73 | 12965 | dwarf2_symbol_mark_computed (attr, sym, cu); |
4c2df51b | 12966 | SYMBOL_CLASS (sym) = LOC_COMPUTED; |
8be455d7 JK |
12967 | |
12968 | if (SYMBOL_COMPUTED_OPS (sym) == &dwarf2_loclist_funcs) | |
12969 | cu->has_loclist = 1; | |
4c2df51b DJ |
12970 | } |
12971 | ||
c906108c SS |
12972 | /* Given a pointer to a DWARF information entry, figure out if we need |
12973 | to make a symbol table entry for it, and if so, create a new entry | |
12974 | and return a pointer to it. | |
12975 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
12976 | used the passed type. |
12977 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
12978 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
12979 | |
12980 | static struct symbol * | |
34eaf542 TT |
12981 | new_symbol_full (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
12982 | struct symbol *space) | |
c906108c | 12983 | { |
e7c27a73 | 12984 | struct objfile *objfile = cu->objfile; |
c906108c SS |
12985 | struct symbol *sym = NULL; |
12986 | char *name; | |
12987 | struct attribute *attr = NULL; | |
12988 | struct attribute *attr2 = NULL; | |
e142c38c | 12989 | CORE_ADDR baseaddr; |
e37fd15a SW |
12990 | struct pending **list_to_add = NULL; |
12991 | ||
edb3359d | 12992 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c DJ |
12993 | |
12994 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 12995 | |
94af9270 | 12996 | name = dwarf2_name (die, cu); |
c906108c SS |
12997 | if (name) |
12998 | { | |
94af9270 | 12999 | const char *linkagename; |
34eaf542 | 13000 | int suppress_add = 0; |
94af9270 | 13001 | |
34eaf542 TT |
13002 | if (space) |
13003 | sym = space; | |
13004 | else | |
13005 | sym = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symbol); | |
c906108c | 13006 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
13007 | |
13008 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
33e5013e | 13009 | SYMBOL_SET_LANGUAGE (sym, cu->language); |
94af9270 KS |
13010 | linkagename = dwarf2_physname (name, die, cu); |
13011 | SYMBOL_SET_NAMES (sym, linkagename, strlen (linkagename), 0, objfile); | |
c906108c | 13012 | |
f55ee35c JK |
13013 | /* Fortran does not have mangling standard and the mangling does differ |
13014 | between gfortran, iFort etc. */ | |
13015 | if (cu->language == language_fortran | |
b250c185 | 13016 | && symbol_get_demangled_name (&(sym->ginfo)) == NULL) |
29df156d SW |
13017 | symbol_set_demangled_name (&(sym->ginfo), |
13018 | (char *) dwarf2_full_name (name, die, cu), | |
13019 | NULL); | |
f55ee35c | 13020 | |
c906108c | 13021 | /* Default assumptions. |
c5aa993b | 13022 | Use the passed type or decode it from the die. */ |
176620f1 | 13023 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
875dc2fc | 13024 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
13025 | if (type != NULL) |
13026 | SYMBOL_TYPE (sym) = type; | |
13027 | else | |
e7c27a73 | 13028 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
13029 | attr = dwarf2_attr (die, |
13030 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
13031 | cu); | |
c906108c SS |
13032 | if (attr) |
13033 | { | |
13034 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
13035 | } | |
cb1df416 | 13036 | |
edb3359d DJ |
13037 | attr = dwarf2_attr (die, |
13038 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
13039 | cu); | |
cb1df416 DJ |
13040 | if (attr) |
13041 | { | |
13042 | int file_index = DW_UNSND (attr); | |
9a619af0 | 13043 | |
cb1df416 DJ |
13044 | if (cu->line_header == NULL |
13045 | || file_index > cu->line_header->num_file_names) | |
13046 | complaint (&symfile_complaints, | |
13047 | _("file index out of range")); | |
1c3d648d | 13048 | else if (file_index > 0) |
cb1df416 DJ |
13049 | { |
13050 | struct file_entry *fe; | |
9a619af0 | 13051 | |
cb1df416 DJ |
13052 | fe = &cu->line_header->file_names[file_index - 1]; |
13053 | SYMBOL_SYMTAB (sym) = fe->symtab; | |
13054 | } | |
13055 | } | |
13056 | ||
c906108c SS |
13057 | switch (die->tag) |
13058 | { | |
13059 | case DW_TAG_label: | |
e142c38c | 13060 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c SS |
13061 | if (attr) |
13062 | { | |
13063 | SYMBOL_VALUE_ADDRESS (sym) = DW_ADDR (attr) + baseaddr; | |
13064 | } | |
0f5238ed TT |
13065 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
13066 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
c906108c | 13067 | SYMBOL_CLASS (sym) = LOC_LABEL; |
0f5238ed | 13068 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
13069 | break; |
13070 | case DW_TAG_subprogram: | |
13071 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
13072 | finish_block. */ | |
13073 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
e142c38c | 13074 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d JB |
13075 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
13076 | || cu->language == language_ada) | |
c906108c | 13077 | { |
2cfa0c8d JB |
13078 | /* Subprograms marked external are stored as a global symbol. |
13079 | Ada subprograms, whether marked external or not, are always | |
13080 | stored as a global symbol, because we want to be able to | |
13081 | access them globally. For instance, we want to be able | |
13082 | to break on a nested subprogram without having to | |
13083 | specify the context. */ | |
e37fd15a | 13084 | list_to_add = &global_symbols; |
c906108c SS |
13085 | } |
13086 | else | |
13087 | { | |
e37fd15a | 13088 | list_to_add = cu->list_in_scope; |
c906108c SS |
13089 | } |
13090 | break; | |
edb3359d DJ |
13091 | case DW_TAG_inlined_subroutine: |
13092 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
13093 | finish_block. */ | |
13094 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
13095 | SYMBOL_INLINED (sym) = 1; | |
481860b3 | 13096 | list_to_add = cu->list_in_scope; |
edb3359d | 13097 | break; |
34eaf542 TT |
13098 | case DW_TAG_template_value_param: |
13099 | suppress_add = 1; | |
13100 | /* Fall through. */ | |
72929c62 | 13101 | case DW_TAG_constant: |
c906108c | 13102 | case DW_TAG_variable: |
254e6b9e | 13103 | case DW_TAG_member: |
0963b4bd MS |
13104 | /* Compilation with minimal debug info may result in |
13105 | variables with missing type entries. Change the | |
13106 | misleading `void' type to something sensible. */ | |
c906108c | 13107 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) |
64c50499 | 13108 | SYMBOL_TYPE (sym) |
46bf5051 | 13109 | = objfile_type (objfile)->nodebug_data_symbol; |
64c50499 | 13110 | |
e142c38c | 13111 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
13112 | /* In the case of DW_TAG_member, we should only be called for |
13113 | static const members. */ | |
13114 | if (die->tag == DW_TAG_member) | |
13115 | { | |
3863f96c DE |
13116 | /* dwarf2_add_field uses die_is_declaration, |
13117 | so we do the same. */ | |
254e6b9e DE |
13118 | gdb_assert (die_is_declaration (die, cu)); |
13119 | gdb_assert (attr); | |
13120 | } | |
c906108c SS |
13121 | if (attr) |
13122 | { | |
e7c27a73 | 13123 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 13124 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 13125 | if (!suppress_add) |
34eaf542 TT |
13126 | { |
13127 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
e37fd15a | 13128 | list_to_add = &global_symbols; |
34eaf542 | 13129 | else |
e37fd15a | 13130 | list_to_add = cu->list_in_scope; |
34eaf542 | 13131 | } |
c906108c SS |
13132 | break; |
13133 | } | |
e142c38c | 13134 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
13135 | if (attr) |
13136 | { | |
e7c27a73 | 13137 | var_decode_location (attr, sym, cu); |
e142c38c | 13138 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
caac4577 JG |
13139 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
13140 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
13141 | && !dwarf2_per_objfile->has_section_at_zero) | |
13142 | { | |
13143 | /* When a static variable is eliminated by the linker, | |
13144 | the corresponding debug information is not stripped | |
13145 | out, but the variable address is set to null; | |
13146 | do not add such variables into symbol table. */ | |
13147 | } | |
13148 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 13149 | { |
f55ee35c JK |
13150 | /* Workaround gfortran PR debug/40040 - it uses |
13151 | DW_AT_location for variables in -fPIC libraries which may | |
13152 | get overriden by other libraries/executable and get | |
13153 | a different address. Resolve it by the minimal symbol | |
13154 | which may come from inferior's executable using copy | |
13155 | relocation. Make this workaround only for gfortran as for | |
13156 | other compilers GDB cannot guess the minimal symbol | |
13157 | Fortran mangling kind. */ | |
13158 | if (cu->language == language_fortran && die->parent | |
13159 | && die->parent->tag == DW_TAG_module | |
13160 | && cu->producer | |
13161 | && strncmp (cu->producer, "GNU Fortran ", 12) == 0) | |
13162 | SYMBOL_CLASS (sym) = LOC_UNRESOLVED; | |
13163 | ||
1c809c68 TT |
13164 | /* A variable with DW_AT_external is never static, |
13165 | but it may be block-scoped. */ | |
13166 | list_to_add = (cu->list_in_scope == &file_symbols | |
13167 | ? &global_symbols : cu->list_in_scope); | |
1c809c68 | 13168 | } |
c906108c | 13169 | else |
e37fd15a | 13170 | list_to_add = cu->list_in_scope; |
c906108c SS |
13171 | } |
13172 | else | |
13173 | { | |
13174 | /* We do not know the address of this symbol. | |
c5aa993b JM |
13175 | If it is an external symbol and we have type information |
13176 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
13177 | The address of the variable will then be determined from | |
13178 | the minimal symbol table whenever the variable is | |
13179 | referenced. */ | |
e142c38c | 13180 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c | 13181 | if (attr2 && (DW_UNSND (attr2) != 0) |
e142c38c | 13182 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) |
c906108c | 13183 | { |
0fe7935b DJ |
13184 | /* A variable with DW_AT_external is never static, but it |
13185 | may be block-scoped. */ | |
13186 | list_to_add = (cu->list_in_scope == &file_symbols | |
13187 | ? &global_symbols : cu->list_in_scope); | |
13188 | ||
c906108c | 13189 | SYMBOL_CLASS (sym) = LOC_UNRESOLVED; |
c906108c | 13190 | } |
442ddf59 JK |
13191 | else if (!die_is_declaration (die, cu)) |
13192 | { | |
13193 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
13194 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
13195 | if (!suppress_add) |
13196 | list_to_add = cu->list_in_scope; | |
442ddf59 | 13197 | } |
c906108c SS |
13198 | } |
13199 | break; | |
13200 | case DW_TAG_formal_parameter: | |
edb3359d DJ |
13201 | /* If we are inside a function, mark this as an argument. If |
13202 | not, we might be looking at an argument to an inlined function | |
13203 | when we do not have enough information to show inlined frames; | |
13204 | pretend it's a local variable in that case so that the user can | |
13205 | still see it. */ | |
13206 | if (context_stack_depth > 0 | |
13207 | && context_stack[context_stack_depth - 1].name != NULL) | |
13208 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
e142c38c | 13209 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
13210 | if (attr) |
13211 | { | |
e7c27a73 | 13212 | var_decode_location (attr, sym, cu); |
c906108c | 13213 | } |
e142c38c | 13214 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
13215 | if (attr) |
13216 | { | |
e7c27a73 | 13217 | dwarf2_const_value (attr, sym, cu); |
c906108c | 13218 | } |
f346a30d | 13219 | |
e37fd15a | 13220 | list_to_add = cu->list_in_scope; |
c906108c SS |
13221 | break; |
13222 | case DW_TAG_unspecified_parameters: | |
13223 | /* From varargs functions; gdb doesn't seem to have any | |
13224 | interest in this information, so just ignore it for now. | |
13225 | (FIXME?) */ | |
13226 | break; | |
34eaf542 TT |
13227 | case DW_TAG_template_type_param: |
13228 | suppress_add = 1; | |
13229 | /* Fall through. */ | |
c906108c | 13230 | case DW_TAG_class_type: |
680b30c7 | 13231 | case DW_TAG_interface_type: |
c906108c SS |
13232 | case DW_TAG_structure_type: |
13233 | case DW_TAG_union_type: | |
72019c9c | 13234 | case DW_TAG_set_type: |
c906108c SS |
13235 | case DW_TAG_enumeration_type: |
13236 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
176620f1 | 13237 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 13238 | |
63d06c5c | 13239 | { |
987504bb | 13240 | /* NOTE: carlton/2003-11-10: C++ and Java class symbols shouldn't |
63d06c5c DC |
13241 | really ever be static objects: otherwise, if you try |
13242 | to, say, break of a class's method and you're in a file | |
13243 | which doesn't mention that class, it won't work unless | |
13244 | the check for all static symbols in lookup_symbol_aux | |
13245 | saves you. See the OtherFileClass tests in | |
13246 | gdb.c++/namespace.exp. */ | |
13247 | ||
e37fd15a | 13248 | if (!suppress_add) |
34eaf542 | 13249 | { |
34eaf542 TT |
13250 | list_to_add = (cu->list_in_scope == &file_symbols |
13251 | && (cu->language == language_cplus | |
13252 | || cu->language == language_java) | |
13253 | ? &global_symbols : cu->list_in_scope); | |
63d06c5c | 13254 | |
64382290 TT |
13255 | /* The semantics of C++ state that "struct foo { |
13256 | ... }" also defines a typedef for "foo". A Java | |
13257 | class declaration also defines a typedef for the | |
13258 | class. */ | |
13259 | if (cu->language == language_cplus | |
13260 | || cu->language == language_java | |
13261 | || cu->language == language_ada) | |
13262 | { | |
13263 | /* The symbol's name is already allocated along | |
13264 | with this objfile, so we don't need to | |
13265 | duplicate it for the type. */ | |
13266 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
13267 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_SEARCH_NAME (sym); | |
13268 | } | |
63d06c5c DC |
13269 | } |
13270 | } | |
c906108c SS |
13271 | break; |
13272 | case DW_TAG_typedef: | |
63d06c5c DC |
13273 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
13274 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; | |
e37fd15a | 13275 | list_to_add = cu->list_in_scope; |
63d06c5c | 13276 | break; |
c906108c | 13277 | case DW_TAG_base_type: |
a02abb62 | 13278 | case DW_TAG_subrange_type: |
c906108c | 13279 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
176620f1 | 13280 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 13281 | list_to_add = cu->list_in_scope; |
c906108c SS |
13282 | break; |
13283 | case DW_TAG_enumerator: | |
e142c38c | 13284 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
13285 | if (attr) |
13286 | { | |
e7c27a73 | 13287 | dwarf2_const_value (attr, sym, cu); |
c906108c | 13288 | } |
63d06c5c DC |
13289 | { |
13290 | /* NOTE: carlton/2003-11-10: See comment above in the | |
13291 | DW_TAG_class_type, etc. block. */ | |
13292 | ||
e142c38c | 13293 | list_to_add = (cu->list_in_scope == &file_symbols |
987504bb JJ |
13294 | && (cu->language == language_cplus |
13295 | || cu->language == language_java) | |
e142c38c | 13296 | ? &global_symbols : cu->list_in_scope); |
63d06c5c | 13297 | } |
c906108c | 13298 | break; |
5c4e30ca DC |
13299 | case DW_TAG_namespace: |
13300 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
e37fd15a | 13301 | list_to_add = &global_symbols; |
5c4e30ca | 13302 | break; |
c906108c SS |
13303 | default: |
13304 | /* Not a tag we recognize. Hopefully we aren't processing | |
13305 | trash data, but since we must specifically ignore things | |
13306 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 13307 | this point. */ |
e2e0b3e5 | 13308 | complaint (&symfile_complaints, _("unsupported tag: '%s'"), |
4d3c2250 | 13309 | dwarf_tag_name (die->tag)); |
c906108c SS |
13310 | break; |
13311 | } | |
df8a16a1 | 13312 | |
e37fd15a SW |
13313 | if (suppress_add) |
13314 | { | |
13315 | sym->hash_next = objfile->template_symbols; | |
13316 | objfile->template_symbols = sym; | |
13317 | list_to_add = NULL; | |
13318 | } | |
13319 | ||
13320 | if (list_to_add != NULL) | |
13321 | add_symbol_to_list (sym, list_to_add); | |
13322 | ||
df8a16a1 DJ |
13323 | /* For the benefit of old versions of GCC, check for anonymous |
13324 | namespaces based on the demangled name. */ | |
13325 | if (!processing_has_namespace_info | |
94af9270 | 13326 | && cu->language == language_cplus) |
a10964d1 | 13327 | cp_scan_for_anonymous_namespaces (sym, objfile); |
c906108c SS |
13328 | } |
13329 | return (sym); | |
13330 | } | |
13331 | ||
34eaf542 TT |
13332 | /* A wrapper for new_symbol_full that always allocates a new symbol. */ |
13333 | ||
13334 | static struct symbol * | |
13335 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu) | |
13336 | { | |
13337 | return new_symbol_full (die, type, cu, NULL); | |
13338 | } | |
13339 | ||
98bfdba5 PA |
13340 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
13341 | zero-extend it as appropriate for the symbol's type. The DWARF | |
13342 | standard (v4) is not entirely clear about the meaning of using | |
13343 | DW_FORM_dataN for a constant with a signed type, where the type is | |
13344 | wider than the data. The conclusion of a discussion on the DWARF | |
13345 | list was that this is unspecified. We choose to always zero-extend | |
13346 | because that is the interpretation long in use by GCC. */ | |
c906108c | 13347 | |
98bfdba5 PA |
13348 | static gdb_byte * |
13349 | dwarf2_const_value_data (struct attribute *attr, struct type *type, | |
13350 | const char *name, struct obstack *obstack, | |
12df843f | 13351 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 13352 | { |
e7c27a73 | 13353 | struct objfile *objfile = cu->objfile; |
e17a4113 UW |
13354 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
13355 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
13356 | LONGEST l = DW_UNSND (attr); |
13357 | ||
13358 | if (bits < sizeof (*value) * 8) | |
13359 | { | |
13360 | l &= ((LONGEST) 1 << bits) - 1; | |
13361 | *value = l; | |
13362 | } | |
13363 | else if (bits == sizeof (*value) * 8) | |
13364 | *value = l; | |
13365 | else | |
13366 | { | |
13367 | gdb_byte *bytes = obstack_alloc (obstack, bits / 8); | |
13368 | store_unsigned_integer (bytes, bits / 8, byte_order, l); | |
13369 | return bytes; | |
13370 | } | |
13371 | ||
13372 | return NULL; | |
13373 | } | |
13374 | ||
13375 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
13376 | the value does not fit in *VALUE, set *BYTES - either already | |
13377 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
13378 | or, set *BATON, if we translated the constant to a location | |
13379 | expression. */ | |
13380 | ||
13381 | static void | |
13382 | dwarf2_const_value_attr (struct attribute *attr, struct type *type, | |
13383 | const char *name, struct obstack *obstack, | |
13384 | struct dwarf2_cu *cu, | |
12df843f | 13385 | LONGEST *value, gdb_byte **bytes, |
98bfdba5 PA |
13386 | struct dwarf2_locexpr_baton **baton) |
13387 | { | |
13388 | struct objfile *objfile = cu->objfile; | |
13389 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c | 13390 | struct dwarf_block *blk; |
98bfdba5 PA |
13391 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
13392 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
13393 | ||
13394 | *value = 0; | |
13395 | *bytes = NULL; | |
13396 | *baton = NULL; | |
c906108c SS |
13397 | |
13398 | switch (attr->form) | |
13399 | { | |
13400 | case DW_FORM_addr: | |
3019eac3 | 13401 | case DW_FORM_GNU_addr_index: |
ac56253d | 13402 | { |
ac56253d TT |
13403 | gdb_byte *data; |
13404 | ||
98bfdba5 PA |
13405 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
13406 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 13407 | cu_header->addr_size, |
98bfdba5 | 13408 | TYPE_LENGTH (type)); |
ac56253d TT |
13409 | /* Symbols of this form are reasonably rare, so we just |
13410 | piggyback on the existing location code rather than writing | |
13411 | a new implementation of symbol_computed_ops. */ | |
98bfdba5 PA |
13412 | *baton = obstack_alloc (&objfile->objfile_obstack, |
13413 | sizeof (struct dwarf2_locexpr_baton)); | |
13414 | (*baton)->per_cu = cu->per_cu; | |
13415 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 13416 | |
98bfdba5 PA |
13417 | (*baton)->size = 2 + cu_header->addr_size; |
13418 | data = obstack_alloc (&objfile->objfile_obstack, (*baton)->size); | |
13419 | (*baton)->data = data; | |
ac56253d TT |
13420 | |
13421 | data[0] = DW_OP_addr; | |
13422 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
13423 | byte_order, DW_ADDR (attr)); | |
13424 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 13425 | } |
c906108c | 13426 | break; |
4ac36638 | 13427 | case DW_FORM_string: |
93b5768b | 13428 | case DW_FORM_strp: |
3019eac3 | 13429 | case DW_FORM_GNU_str_index: |
98bfdba5 PA |
13430 | /* DW_STRING is already allocated on the objfile obstack, point |
13431 | directly to it. */ | |
13432 | *bytes = (gdb_byte *) DW_STRING (attr); | |
93b5768b | 13433 | break; |
c906108c SS |
13434 | case DW_FORM_block1: |
13435 | case DW_FORM_block2: | |
13436 | case DW_FORM_block4: | |
13437 | case DW_FORM_block: | |
2dc7f7b3 | 13438 | case DW_FORM_exprloc: |
c906108c | 13439 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
13440 | if (TYPE_LENGTH (type) != blk->size) |
13441 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
13442 | TYPE_LENGTH (type)); | |
13443 | *bytes = blk->data; | |
c906108c | 13444 | break; |
2df3850c JM |
13445 | |
13446 | /* The DW_AT_const_value attributes are supposed to carry the | |
13447 | symbol's value "represented as it would be on the target | |
13448 | architecture." By the time we get here, it's already been | |
13449 | converted to host endianness, so we just need to sign- or | |
13450 | zero-extend it as appropriate. */ | |
13451 | case DW_FORM_data1: | |
3e43a32a MS |
13452 | *bytes = dwarf2_const_value_data (attr, type, name, |
13453 | obstack, cu, value, 8); | |
2df3850c | 13454 | break; |
c906108c | 13455 | case DW_FORM_data2: |
3e43a32a MS |
13456 | *bytes = dwarf2_const_value_data (attr, type, name, |
13457 | obstack, cu, value, 16); | |
2df3850c | 13458 | break; |
c906108c | 13459 | case DW_FORM_data4: |
3e43a32a MS |
13460 | *bytes = dwarf2_const_value_data (attr, type, name, |
13461 | obstack, cu, value, 32); | |
2df3850c | 13462 | break; |
c906108c | 13463 | case DW_FORM_data8: |
3e43a32a MS |
13464 | *bytes = dwarf2_const_value_data (attr, type, name, |
13465 | obstack, cu, value, 64); | |
2df3850c JM |
13466 | break; |
13467 | ||
c906108c | 13468 | case DW_FORM_sdata: |
98bfdba5 | 13469 | *value = DW_SND (attr); |
2df3850c JM |
13470 | break; |
13471 | ||
c906108c | 13472 | case DW_FORM_udata: |
98bfdba5 | 13473 | *value = DW_UNSND (attr); |
c906108c | 13474 | break; |
2df3850c | 13475 | |
c906108c | 13476 | default: |
4d3c2250 | 13477 | complaint (&symfile_complaints, |
e2e0b3e5 | 13478 | _("unsupported const value attribute form: '%s'"), |
4d3c2250 | 13479 | dwarf_form_name (attr->form)); |
98bfdba5 | 13480 | *value = 0; |
c906108c SS |
13481 | break; |
13482 | } | |
13483 | } | |
13484 | ||
2df3850c | 13485 | |
98bfdba5 PA |
13486 | /* Copy constant value from an attribute to a symbol. */ |
13487 | ||
2df3850c | 13488 | static void |
98bfdba5 PA |
13489 | dwarf2_const_value (struct attribute *attr, struct symbol *sym, |
13490 | struct dwarf2_cu *cu) | |
2df3850c | 13491 | { |
98bfdba5 PA |
13492 | struct objfile *objfile = cu->objfile; |
13493 | struct comp_unit_head *cu_header = &cu->header; | |
12df843f | 13494 | LONGEST value; |
98bfdba5 PA |
13495 | gdb_byte *bytes; |
13496 | struct dwarf2_locexpr_baton *baton; | |
2df3850c | 13497 | |
98bfdba5 PA |
13498 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
13499 | SYMBOL_PRINT_NAME (sym), | |
13500 | &objfile->objfile_obstack, cu, | |
13501 | &value, &bytes, &baton); | |
2df3850c | 13502 | |
98bfdba5 PA |
13503 | if (baton != NULL) |
13504 | { | |
13505 | SYMBOL_COMPUTED_OPS (sym) = &dwarf2_locexpr_funcs; | |
13506 | SYMBOL_LOCATION_BATON (sym) = baton; | |
13507 | SYMBOL_CLASS (sym) = LOC_COMPUTED; | |
13508 | } | |
13509 | else if (bytes != NULL) | |
13510 | { | |
13511 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
13512 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; | |
13513 | } | |
13514 | else | |
13515 | { | |
13516 | SYMBOL_VALUE (sym) = value; | |
13517 | SYMBOL_CLASS (sym) = LOC_CONST; | |
13518 | } | |
2df3850c JM |
13519 | } |
13520 | ||
c906108c SS |
13521 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
13522 | ||
13523 | static struct type * | |
e7c27a73 | 13524 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13525 | { |
c906108c | 13526 | struct attribute *type_attr; |
c906108c | 13527 | |
e142c38c | 13528 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
13529 | if (!type_attr) |
13530 | { | |
13531 | /* A missing DW_AT_type represents a void type. */ | |
46bf5051 | 13532 | return objfile_type (cu->objfile)->builtin_void; |
c906108c | 13533 | } |
348e048f | 13534 | |
673bfd45 | 13535 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
13536 | } |
13537 | ||
b4ba55a1 JB |
13538 | /* True iff CU's producer generates GNAT Ada auxiliary information |
13539 | that allows to find parallel types through that information instead | |
13540 | of having to do expensive parallel lookups by type name. */ | |
13541 | ||
13542 | static int | |
13543 | need_gnat_info (struct dwarf2_cu *cu) | |
13544 | { | |
13545 | /* FIXME: brobecker/2010-10-12: As of now, only the AdaCore version | |
13546 | of GNAT produces this auxiliary information, without any indication | |
13547 | that it is produced. Part of enhancing the FSF version of GNAT | |
13548 | to produce that information will be to put in place an indicator | |
13549 | that we can use in order to determine whether the descriptive type | |
13550 | info is available or not. One suggestion that has been made is | |
13551 | to use a new attribute, attached to the CU die. For now, assume | |
13552 | that the descriptive type info is not available. */ | |
13553 | return 0; | |
13554 | } | |
13555 | ||
b4ba55a1 JB |
13556 | /* Return the auxiliary type of the die in question using its |
13557 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
13558 | attribute is not present. */ | |
13559 | ||
13560 | static struct type * | |
13561 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
13562 | { | |
b4ba55a1 | 13563 | struct attribute *type_attr; |
b4ba55a1 JB |
13564 | |
13565 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
13566 | if (!type_attr) | |
13567 | return NULL; | |
13568 | ||
673bfd45 | 13569 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
13570 | } |
13571 | ||
13572 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
13573 | descriptive type accordingly. */ | |
13574 | ||
13575 | static void | |
13576 | set_descriptive_type (struct type *type, struct die_info *die, | |
13577 | struct dwarf2_cu *cu) | |
13578 | { | |
13579 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
13580 | ||
13581 | if (descriptive_type) | |
13582 | { | |
13583 | ALLOCATE_GNAT_AUX_TYPE (type); | |
13584 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
13585 | } | |
13586 | } | |
13587 | ||
c906108c SS |
13588 | /* Return the containing type of the die in question using its |
13589 | DW_AT_containing_type attribute. */ | |
13590 | ||
13591 | static struct type * | |
e7c27a73 | 13592 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13593 | { |
c906108c | 13594 | struct attribute *type_attr; |
c906108c | 13595 | |
e142c38c | 13596 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
13597 | if (!type_attr) |
13598 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
13599 | "[in module %s]"), cu->objfile->name); | |
13600 | ||
673bfd45 | 13601 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
13602 | } |
13603 | ||
673bfd45 DE |
13604 | /* Look up the type of DIE in CU using its type attribute ATTR. |
13605 | If there is no type substitute an error marker. */ | |
13606 | ||
c906108c | 13607 | static struct type * |
673bfd45 DE |
13608 | lookup_die_type (struct die_info *die, struct attribute *attr, |
13609 | struct dwarf2_cu *cu) | |
c906108c | 13610 | { |
bb5ed363 | 13611 | struct objfile *objfile = cu->objfile; |
f792889a DJ |
13612 | struct type *this_type; |
13613 | ||
673bfd45 DE |
13614 | /* First see if we have it cached. */ |
13615 | ||
13616 | if (is_ref_attr (attr)) | |
13617 | { | |
b64f50a1 | 13618 | sect_offset offset = dwarf2_get_ref_die_offset (attr); |
673bfd45 DE |
13619 | |
13620 | this_type = get_die_type_at_offset (offset, cu->per_cu); | |
13621 | } | |
55f1336d | 13622 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 DE |
13623 | { |
13624 | struct signatured_type *sig_type = DW_SIGNATURED_TYPE (attr); | |
673bfd45 DE |
13625 | |
13626 | /* sig_type will be NULL if the signatured type is missing from | |
13627 | the debug info. */ | |
13628 | if (sig_type == NULL) | |
13629 | error (_("Dwarf Error: Cannot find signatured DIE referenced from DIE " | |
13630 | "at 0x%x [in module %s]"), | |
b64f50a1 | 13631 | die->offset.sect_off, objfile->name); |
673bfd45 | 13632 | |
3019eac3 DE |
13633 | gdb_assert (sig_type->per_cu.is_debug_types); |
13634 | /* If we haven't filled in type_offset_in_section yet, then we | |
13635 | haven't read the type in yet. */ | |
13636 | this_type = NULL; | |
13637 | if (sig_type->type_offset_in_section.sect_off != 0) | |
13638 | { | |
13639 | this_type = | |
13640 | get_die_type_at_offset (sig_type->type_offset_in_section, | |
13641 | &sig_type->per_cu); | |
13642 | } | |
673bfd45 DE |
13643 | } |
13644 | else | |
13645 | { | |
13646 | dump_die_for_error (die); | |
13647 | error (_("Dwarf Error: Bad type attribute %s [in module %s]"), | |
bb5ed363 | 13648 | dwarf_attr_name (attr->name), objfile->name); |
673bfd45 DE |
13649 | } |
13650 | ||
13651 | /* If not cached we need to read it in. */ | |
13652 | ||
13653 | if (this_type == NULL) | |
13654 | { | |
13655 | struct die_info *type_die; | |
13656 | struct dwarf2_cu *type_cu = cu; | |
13657 | ||
13658 | type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
3019eac3 DE |
13659 | /* If we found the type now, it's probably because the type came |
13660 | from an inter-CU reference and the type's CU got expanded before | |
13661 | ours. */ | |
13662 | this_type = get_die_type (type_die, type_cu); | |
13663 | if (this_type == NULL) | |
13664 | this_type = read_type_die_1 (type_die, type_cu); | |
673bfd45 DE |
13665 | } |
13666 | ||
13667 | /* If we still don't have a type use an error marker. */ | |
13668 | ||
13669 | if (this_type == NULL) | |
c906108c | 13670 | { |
b00fdb78 TT |
13671 | char *message, *saved; |
13672 | ||
13673 | /* read_type_die already issued a complaint. */ | |
13674 | message = xstrprintf (_("<unknown type in %s, CU 0x%x, DIE 0x%x>"), | |
bb5ed363 | 13675 | objfile->name, |
b64f50a1 JK |
13676 | cu->header.offset.sect_off, |
13677 | die->offset.sect_off); | |
bb5ed363 | 13678 | saved = obstack_copy0 (&objfile->objfile_obstack, |
b00fdb78 TT |
13679 | message, strlen (message)); |
13680 | xfree (message); | |
13681 | ||
bb5ed363 | 13682 | this_type = init_type (TYPE_CODE_ERROR, 0, 0, saved, objfile); |
c906108c | 13683 | } |
673bfd45 | 13684 | |
f792889a | 13685 | return this_type; |
c906108c SS |
13686 | } |
13687 | ||
673bfd45 DE |
13688 | /* Return the type in DIE, CU. |
13689 | Returns NULL for invalid types. | |
13690 | ||
13691 | This first does a lookup in the appropriate type_hash table, | |
13692 | and only reads the die in if necessary. | |
13693 | ||
13694 | NOTE: This can be called when reading in partial or full symbols. */ | |
13695 | ||
f792889a | 13696 | static struct type * |
e7c27a73 | 13697 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13698 | { |
f792889a DJ |
13699 | struct type *this_type; |
13700 | ||
13701 | this_type = get_die_type (die, cu); | |
13702 | if (this_type) | |
13703 | return this_type; | |
13704 | ||
673bfd45 DE |
13705 | return read_type_die_1 (die, cu); |
13706 | } | |
13707 | ||
13708 | /* Read the type in DIE, CU. | |
13709 | Returns NULL for invalid types. */ | |
13710 | ||
13711 | static struct type * | |
13712 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
13713 | { | |
13714 | struct type *this_type = NULL; | |
13715 | ||
c906108c SS |
13716 | switch (die->tag) |
13717 | { | |
13718 | case DW_TAG_class_type: | |
680b30c7 | 13719 | case DW_TAG_interface_type: |
c906108c SS |
13720 | case DW_TAG_structure_type: |
13721 | case DW_TAG_union_type: | |
f792889a | 13722 | this_type = read_structure_type (die, cu); |
c906108c SS |
13723 | break; |
13724 | case DW_TAG_enumeration_type: | |
f792889a | 13725 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
13726 | break; |
13727 | case DW_TAG_subprogram: | |
13728 | case DW_TAG_subroutine_type: | |
edb3359d | 13729 | case DW_TAG_inlined_subroutine: |
f792889a | 13730 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
13731 | break; |
13732 | case DW_TAG_array_type: | |
f792889a | 13733 | this_type = read_array_type (die, cu); |
c906108c | 13734 | break; |
72019c9c | 13735 | case DW_TAG_set_type: |
f792889a | 13736 | this_type = read_set_type (die, cu); |
72019c9c | 13737 | break; |
c906108c | 13738 | case DW_TAG_pointer_type: |
f792889a | 13739 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
13740 | break; |
13741 | case DW_TAG_ptr_to_member_type: | |
f792889a | 13742 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
13743 | break; |
13744 | case DW_TAG_reference_type: | |
f792889a | 13745 | this_type = read_tag_reference_type (die, cu); |
c906108c SS |
13746 | break; |
13747 | case DW_TAG_const_type: | |
f792889a | 13748 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
13749 | break; |
13750 | case DW_TAG_volatile_type: | |
f792889a | 13751 | this_type = read_tag_volatile_type (die, cu); |
c906108c SS |
13752 | break; |
13753 | case DW_TAG_string_type: | |
f792889a | 13754 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
13755 | break; |
13756 | case DW_TAG_typedef: | |
f792889a | 13757 | this_type = read_typedef (die, cu); |
c906108c | 13758 | break; |
a02abb62 | 13759 | case DW_TAG_subrange_type: |
f792889a | 13760 | this_type = read_subrange_type (die, cu); |
a02abb62 | 13761 | break; |
c906108c | 13762 | case DW_TAG_base_type: |
f792889a | 13763 | this_type = read_base_type (die, cu); |
c906108c | 13764 | break; |
81a17f79 | 13765 | case DW_TAG_unspecified_type: |
f792889a | 13766 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 13767 | break; |
0114d602 DJ |
13768 | case DW_TAG_namespace: |
13769 | this_type = read_namespace_type (die, cu); | |
13770 | break; | |
f55ee35c JK |
13771 | case DW_TAG_module: |
13772 | this_type = read_module_type (die, cu); | |
13773 | break; | |
c906108c | 13774 | default: |
3e43a32a MS |
13775 | complaint (&symfile_complaints, |
13776 | _("unexpected tag in read_type_die: '%s'"), | |
4d3c2250 | 13777 | dwarf_tag_name (die->tag)); |
c906108c SS |
13778 | break; |
13779 | } | |
63d06c5c | 13780 | |
f792889a | 13781 | return this_type; |
63d06c5c DC |
13782 | } |
13783 | ||
abc72ce4 DE |
13784 | /* See if we can figure out if the class lives in a namespace. We do |
13785 | this by looking for a member function; its demangled name will | |
13786 | contain namespace info, if there is any. | |
13787 | Return the computed name or NULL. | |
13788 | Space for the result is allocated on the objfile's obstack. | |
13789 | This is the full-die version of guess_partial_die_structure_name. | |
13790 | In this case we know DIE has no useful parent. */ | |
13791 | ||
13792 | static char * | |
13793 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) | |
13794 | { | |
13795 | struct die_info *spec_die; | |
13796 | struct dwarf2_cu *spec_cu; | |
13797 | struct die_info *child; | |
13798 | ||
13799 | spec_cu = cu; | |
13800 | spec_die = die_specification (die, &spec_cu); | |
13801 | if (spec_die != NULL) | |
13802 | { | |
13803 | die = spec_die; | |
13804 | cu = spec_cu; | |
13805 | } | |
13806 | ||
13807 | for (child = die->child; | |
13808 | child != NULL; | |
13809 | child = child->sibling) | |
13810 | { | |
13811 | if (child->tag == DW_TAG_subprogram) | |
13812 | { | |
13813 | struct attribute *attr; | |
13814 | ||
13815 | attr = dwarf2_attr (child, DW_AT_linkage_name, cu); | |
13816 | if (attr == NULL) | |
13817 | attr = dwarf2_attr (child, DW_AT_MIPS_linkage_name, cu); | |
13818 | if (attr != NULL) | |
13819 | { | |
13820 | char *actual_name | |
13821 | = language_class_name_from_physname (cu->language_defn, | |
13822 | DW_STRING (attr)); | |
13823 | char *name = NULL; | |
13824 | ||
13825 | if (actual_name != NULL) | |
13826 | { | |
13827 | char *die_name = dwarf2_name (die, cu); | |
13828 | ||
13829 | if (die_name != NULL | |
13830 | && strcmp (die_name, actual_name) != 0) | |
13831 | { | |
13832 | /* Strip off the class name from the full name. | |
13833 | We want the prefix. */ | |
13834 | int die_name_len = strlen (die_name); | |
13835 | int actual_name_len = strlen (actual_name); | |
13836 | ||
13837 | /* Test for '::' as a sanity check. */ | |
13838 | if (actual_name_len > die_name_len + 2 | |
3e43a32a MS |
13839 | && actual_name[actual_name_len |
13840 | - die_name_len - 1] == ':') | |
abc72ce4 DE |
13841 | name = |
13842 | obsavestring (actual_name, | |
13843 | actual_name_len - die_name_len - 2, | |
13844 | &cu->objfile->objfile_obstack); | |
13845 | } | |
13846 | } | |
13847 | xfree (actual_name); | |
13848 | return name; | |
13849 | } | |
13850 | } | |
13851 | } | |
13852 | ||
13853 | return NULL; | |
13854 | } | |
13855 | ||
96408a79 SA |
13856 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
13857 | prefix part in such case. See | |
13858 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
13859 | ||
13860 | static char * | |
13861 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) | |
13862 | { | |
13863 | struct attribute *attr; | |
13864 | char *base; | |
13865 | ||
13866 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
13867 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
13868 | return NULL; | |
13869 | ||
13870 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
13871 | if (attr != NULL && DW_STRING (attr) != NULL) | |
13872 | return NULL; | |
13873 | ||
13874 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
13875 | if (attr == NULL) | |
13876 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
13877 | if (attr == NULL || DW_STRING (attr) == NULL) | |
13878 | return NULL; | |
13879 | ||
13880 | /* dwarf2_name had to be already called. */ | |
13881 | gdb_assert (DW_STRING_IS_CANONICAL (attr)); | |
13882 | ||
13883 | /* Strip the base name, keep any leading namespaces/classes. */ | |
13884 | base = strrchr (DW_STRING (attr), ':'); | |
13885 | if (base == NULL || base == DW_STRING (attr) || base[-1] != ':') | |
13886 | return ""; | |
13887 | ||
13888 | return obsavestring (DW_STRING (attr), &base[-1] - DW_STRING (attr), | |
13889 | &cu->objfile->objfile_obstack); | |
13890 | } | |
13891 | ||
fdde2d81 | 13892 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 13893 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 13894 | |
0114d602 DJ |
13895 | For example, if we're within the method foo() in the following |
13896 | code: | |
13897 | ||
13898 | namespace N { | |
13899 | class C { | |
13900 | void foo () { | |
13901 | } | |
13902 | }; | |
13903 | } | |
13904 | ||
13905 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 13906 | |
0d5cff50 | 13907 | static const char * |
e142c38c | 13908 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 13909 | { |
0114d602 DJ |
13910 | struct die_info *parent, *spec_die; |
13911 | struct dwarf2_cu *spec_cu; | |
13912 | struct type *parent_type; | |
96408a79 | 13913 | char *retval; |
63d06c5c | 13914 | |
f55ee35c JK |
13915 | if (cu->language != language_cplus && cu->language != language_java |
13916 | && cu->language != language_fortran) | |
0114d602 DJ |
13917 | return ""; |
13918 | ||
96408a79 SA |
13919 | retval = anonymous_struct_prefix (die, cu); |
13920 | if (retval) | |
13921 | return retval; | |
13922 | ||
0114d602 DJ |
13923 | /* We have to be careful in the presence of DW_AT_specification. |
13924 | For example, with GCC 3.4, given the code | |
13925 | ||
13926 | namespace N { | |
13927 | void foo() { | |
13928 | // Definition of N::foo. | |
13929 | } | |
13930 | } | |
13931 | ||
13932 | then we'll have a tree of DIEs like this: | |
13933 | ||
13934 | 1: DW_TAG_compile_unit | |
13935 | 2: DW_TAG_namespace // N | |
13936 | 3: DW_TAG_subprogram // declaration of N::foo | |
13937 | 4: DW_TAG_subprogram // definition of N::foo | |
13938 | DW_AT_specification // refers to die #3 | |
13939 | ||
13940 | Thus, when processing die #4, we have to pretend that we're in | |
13941 | the context of its DW_AT_specification, namely the contex of die | |
13942 | #3. */ | |
13943 | spec_cu = cu; | |
13944 | spec_die = die_specification (die, &spec_cu); | |
13945 | if (spec_die == NULL) | |
13946 | parent = die->parent; | |
13947 | else | |
63d06c5c | 13948 | { |
0114d602 DJ |
13949 | parent = spec_die->parent; |
13950 | cu = spec_cu; | |
63d06c5c | 13951 | } |
0114d602 DJ |
13952 | |
13953 | if (parent == NULL) | |
13954 | return ""; | |
98bfdba5 PA |
13955 | else if (parent->building_fullname) |
13956 | { | |
13957 | const char *name; | |
13958 | const char *parent_name; | |
13959 | ||
13960 | /* It has been seen on RealView 2.2 built binaries, | |
13961 | DW_TAG_template_type_param types actually _defined_ as | |
13962 | children of the parent class: | |
13963 | ||
13964 | enum E {}; | |
13965 | template class <class Enum> Class{}; | |
13966 | Class<enum E> class_e; | |
13967 | ||
13968 | 1: DW_TAG_class_type (Class) | |
13969 | 2: DW_TAG_enumeration_type (E) | |
13970 | 3: DW_TAG_enumerator (enum1:0) | |
13971 | 3: DW_TAG_enumerator (enum2:1) | |
13972 | ... | |
13973 | 2: DW_TAG_template_type_param | |
13974 | DW_AT_type DW_FORM_ref_udata (E) | |
13975 | ||
13976 | Besides being broken debug info, it can put GDB into an | |
13977 | infinite loop. Consider: | |
13978 | ||
13979 | When we're building the full name for Class<E>, we'll start | |
13980 | at Class, and go look over its template type parameters, | |
13981 | finding E. We'll then try to build the full name of E, and | |
13982 | reach here. We're now trying to build the full name of E, | |
13983 | and look over the parent DIE for containing scope. In the | |
13984 | broken case, if we followed the parent DIE of E, we'd again | |
13985 | find Class, and once again go look at its template type | |
13986 | arguments, etc., etc. Simply don't consider such parent die | |
13987 | as source-level parent of this die (it can't be, the language | |
13988 | doesn't allow it), and break the loop here. */ | |
13989 | name = dwarf2_name (die, cu); | |
13990 | parent_name = dwarf2_name (parent, cu); | |
13991 | complaint (&symfile_complaints, | |
13992 | _("template param type '%s' defined within parent '%s'"), | |
13993 | name ? name : "<unknown>", | |
13994 | parent_name ? parent_name : "<unknown>"); | |
13995 | return ""; | |
13996 | } | |
63d06c5c | 13997 | else |
0114d602 DJ |
13998 | switch (parent->tag) |
13999 | { | |
63d06c5c | 14000 | case DW_TAG_namespace: |
0114d602 | 14001 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
14002 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
14003 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
14004 | Work around this problem here. */ | |
14005 | if (cu->language == language_cplus | |
14006 | && strcmp (TYPE_TAG_NAME (parent_type), "::") == 0) | |
14007 | return ""; | |
0114d602 DJ |
14008 | /* We give a name to even anonymous namespaces. */ |
14009 | return TYPE_TAG_NAME (parent_type); | |
63d06c5c | 14010 | case DW_TAG_class_type: |
680b30c7 | 14011 | case DW_TAG_interface_type: |
63d06c5c | 14012 | case DW_TAG_structure_type: |
0114d602 | 14013 | case DW_TAG_union_type: |
f55ee35c | 14014 | case DW_TAG_module: |
0114d602 DJ |
14015 | parent_type = read_type_die (parent, cu); |
14016 | if (TYPE_TAG_NAME (parent_type) != NULL) | |
14017 | return TYPE_TAG_NAME (parent_type); | |
14018 | else | |
14019 | /* An anonymous structure is only allowed non-static data | |
14020 | members; no typedefs, no member functions, et cetera. | |
14021 | So it does not need a prefix. */ | |
14022 | return ""; | |
abc72ce4 DE |
14023 | case DW_TAG_compile_unit: |
14024 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ | |
14025 | if (cu->language == language_cplus | |
8b70b953 | 14026 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
14027 | && die->child != NULL |
14028 | && (die->tag == DW_TAG_class_type | |
14029 | || die->tag == DW_TAG_structure_type | |
14030 | || die->tag == DW_TAG_union_type)) | |
14031 | { | |
14032 | char *name = guess_full_die_structure_name (die, cu); | |
14033 | if (name != NULL) | |
14034 | return name; | |
14035 | } | |
14036 | return ""; | |
63d06c5c | 14037 | default: |
8176b9b8 | 14038 | return determine_prefix (parent, cu); |
63d06c5c | 14039 | } |
63d06c5c DC |
14040 | } |
14041 | ||
3e43a32a MS |
14042 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
14043 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
14044 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
14045 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
14046 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 14047 | |
f55ee35c | 14048 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
14049 | |
14050 | static char * | |
f55ee35c JK |
14051 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
14052 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 14053 | { |
f55ee35c | 14054 | const char *lead = ""; |
5c315b68 | 14055 | const char *sep; |
63d06c5c | 14056 | |
3e43a32a MS |
14057 | if (suffix == NULL || suffix[0] == '\0' |
14058 | || prefix == NULL || prefix[0] == '\0') | |
987504bb JJ |
14059 | sep = ""; |
14060 | else if (cu->language == language_java) | |
14061 | sep = "."; | |
f55ee35c JK |
14062 | else if (cu->language == language_fortran && physname) |
14063 | { | |
14064 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
14065 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
14066 | ||
14067 | lead = "__"; | |
14068 | sep = "_MOD_"; | |
14069 | } | |
987504bb JJ |
14070 | else |
14071 | sep = "::"; | |
63d06c5c | 14072 | |
6dd47d34 DE |
14073 | if (prefix == NULL) |
14074 | prefix = ""; | |
14075 | if (suffix == NULL) | |
14076 | suffix = ""; | |
14077 | ||
987504bb JJ |
14078 | if (obs == NULL) |
14079 | { | |
3e43a32a MS |
14080 | char *retval |
14081 | = xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1); | |
9a619af0 | 14082 | |
f55ee35c JK |
14083 | strcpy (retval, lead); |
14084 | strcat (retval, prefix); | |
6dd47d34 DE |
14085 | strcat (retval, sep); |
14086 | strcat (retval, suffix); | |
63d06c5c DC |
14087 | return retval; |
14088 | } | |
987504bb JJ |
14089 | else |
14090 | { | |
14091 | /* We have an obstack. */ | |
f55ee35c | 14092 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 14093 | } |
63d06c5c DC |
14094 | } |
14095 | ||
c906108c SS |
14096 | /* Return sibling of die, NULL if no sibling. */ |
14097 | ||
f9aca02d | 14098 | static struct die_info * |
fba45db2 | 14099 | sibling_die (struct die_info *die) |
c906108c | 14100 | { |
639d11d3 | 14101 | return die->sibling; |
c906108c SS |
14102 | } |
14103 | ||
71c25dea TT |
14104 | /* Get name of a die, return NULL if not found. */ |
14105 | ||
14106 | static char * | |
14107 | dwarf2_canonicalize_name (char *name, struct dwarf2_cu *cu, | |
14108 | struct obstack *obstack) | |
14109 | { | |
14110 | if (name && cu->language == language_cplus) | |
14111 | { | |
14112 | char *canon_name = cp_canonicalize_string (name); | |
14113 | ||
14114 | if (canon_name != NULL) | |
14115 | { | |
14116 | if (strcmp (canon_name, name) != 0) | |
14117 | name = obsavestring (canon_name, strlen (canon_name), | |
14118 | obstack); | |
14119 | xfree (canon_name); | |
14120 | } | |
14121 | } | |
14122 | ||
14123 | return name; | |
c906108c SS |
14124 | } |
14125 | ||
9219021c DC |
14126 | /* Get name of a die, return NULL if not found. */ |
14127 | ||
14128 | static char * | |
e142c38c | 14129 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
14130 | { |
14131 | struct attribute *attr; | |
14132 | ||
e142c38c | 14133 | attr = dwarf2_attr (die, DW_AT_name, cu); |
53832f31 TT |
14134 | if ((!attr || !DW_STRING (attr)) |
14135 | && die->tag != DW_TAG_class_type | |
14136 | && die->tag != DW_TAG_interface_type | |
14137 | && die->tag != DW_TAG_structure_type | |
14138 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
14139 | return NULL; |
14140 | ||
14141 | switch (die->tag) | |
14142 | { | |
14143 | case DW_TAG_compile_unit: | |
14144 | /* Compilation units have a DW_AT_name that is a filename, not | |
14145 | a source language identifier. */ | |
14146 | case DW_TAG_enumeration_type: | |
14147 | case DW_TAG_enumerator: | |
14148 | /* These tags always have simple identifiers already; no need | |
14149 | to canonicalize them. */ | |
14150 | return DW_STRING (attr); | |
907af001 | 14151 | |
418835cc KS |
14152 | case DW_TAG_subprogram: |
14153 | /* Java constructors will all be named "<init>", so return | |
14154 | the class name when we see this special case. */ | |
14155 | if (cu->language == language_java | |
14156 | && DW_STRING (attr) != NULL | |
14157 | && strcmp (DW_STRING (attr), "<init>") == 0) | |
14158 | { | |
14159 | struct dwarf2_cu *spec_cu = cu; | |
14160 | struct die_info *spec_die; | |
14161 | ||
14162 | /* GCJ will output '<init>' for Java constructor names. | |
14163 | For this special case, return the name of the parent class. */ | |
14164 | ||
14165 | /* GCJ may output suprogram DIEs with AT_specification set. | |
14166 | If so, use the name of the specified DIE. */ | |
14167 | spec_die = die_specification (die, &spec_cu); | |
14168 | if (spec_die != NULL) | |
14169 | return dwarf2_name (spec_die, spec_cu); | |
14170 | ||
14171 | do | |
14172 | { | |
14173 | die = die->parent; | |
14174 | if (die->tag == DW_TAG_class_type) | |
14175 | return dwarf2_name (die, cu); | |
14176 | } | |
14177 | while (die->tag != DW_TAG_compile_unit); | |
14178 | } | |
907af001 UW |
14179 | break; |
14180 | ||
14181 | case DW_TAG_class_type: | |
14182 | case DW_TAG_interface_type: | |
14183 | case DW_TAG_structure_type: | |
14184 | case DW_TAG_union_type: | |
14185 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
14186 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
14187 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
14188 | and GCC 4.4. We work around this problem by ignoring these. */ | |
53832f31 TT |
14189 | if (attr && DW_STRING (attr) |
14190 | && (strncmp (DW_STRING (attr), "._", 2) == 0 | |
14191 | || strncmp (DW_STRING (attr), "<anonymous", 10) == 0)) | |
907af001 | 14192 | return NULL; |
53832f31 TT |
14193 | |
14194 | /* GCC might emit a nameless typedef that has a linkage name. See | |
14195 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
14196 | if (!attr || DW_STRING (attr) == NULL) | |
14197 | { | |
df5c6c50 | 14198 | char *demangled = NULL; |
53832f31 TT |
14199 | |
14200 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
14201 | if (attr == NULL) | |
14202 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
14203 | ||
14204 | if (attr == NULL || DW_STRING (attr) == NULL) | |
14205 | return NULL; | |
14206 | ||
df5c6c50 JK |
14207 | /* Avoid demangling DW_STRING (attr) the second time on a second |
14208 | call for the same DIE. */ | |
14209 | if (!DW_STRING_IS_CANONICAL (attr)) | |
14210 | demangled = cplus_demangle (DW_STRING (attr), DMGL_TYPES); | |
53832f31 TT |
14211 | |
14212 | if (demangled) | |
14213 | { | |
96408a79 SA |
14214 | char *base; |
14215 | ||
53832f31 | 14216 | /* FIXME: we already did this for the partial symbol... */ |
96408a79 SA |
14217 | DW_STRING (attr) = obsavestring (demangled, strlen (demangled), |
14218 | &cu->objfile->objfile_obstack); | |
53832f31 TT |
14219 | DW_STRING_IS_CANONICAL (attr) = 1; |
14220 | xfree (demangled); | |
96408a79 SA |
14221 | |
14222 | /* Strip any leading namespaces/classes, keep only the base name. | |
14223 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
14224 | base = strrchr (DW_STRING (attr), ':'); | |
14225 | if (base && base > DW_STRING (attr) && base[-1] == ':') | |
14226 | return &base[1]; | |
14227 | else | |
14228 | return DW_STRING (attr); | |
53832f31 TT |
14229 | } |
14230 | } | |
907af001 UW |
14231 | break; |
14232 | ||
71c25dea | 14233 | default: |
907af001 UW |
14234 | break; |
14235 | } | |
14236 | ||
14237 | if (!DW_STRING_IS_CANONICAL (attr)) | |
14238 | { | |
14239 | DW_STRING (attr) | |
14240 | = dwarf2_canonicalize_name (DW_STRING (attr), cu, | |
14241 | &cu->objfile->objfile_obstack); | |
14242 | DW_STRING_IS_CANONICAL (attr) = 1; | |
71c25dea | 14243 | } |
907af001 | 14244 | return DW_STRING (attr); |
9219021c DC |
14245 | } |
14246 | ||
14247 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
14248 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
14249 | containing the return value on output. */ | |
9219021c DC |
14250 | |
14251 | static struct die_info * | |
f2f0e013 | 14252 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
14253 | { |
14254 | struct attribute *attr; | |
9219021c | 14255 | |
f2f0e013 | 14256 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
14257 | if (attr == NULL) |
14258 | return NULL; | |
14259 | ||
f2f0e013 | 14260 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
14261 | } |
14262 | ||
c906108c SS |
14263 | /* Convert a DIE tag into its string name. */ |
14264 | ||
f39c6ffd | 14265 | static const char * |
aa1ee363 | 14266 | dwarf_tag_name (unsigned tag) |
c906108c | 14267 | { |
f39c6ffd TT |
14268 | const char *name = get_DW_TAG_name (tag); |
14269 | ||
14270 | if (name == NULL) | |
14271 | return "DW_TAG_<unknown>"; | |
14272 | ||
14273 | return name; | |
c906108c SS |
14274 | } |
14275 | ||
14276 | /* Convert a DWARF attribute code into its string name. */ | |
14277 | ||
f39c6ffd | 14278 | static const char * |
aa1ee363 | 14279 | dwarf_attr_name (unsigned attr) |
c906108c | 14280 | { |
f39c6ffd TT |
14281 | const char *name; |
14282 | ||
c764a876 | 14283 | #ifdef MIPS /* collides with DW_AT_HP_block_index */ |
f39c6ffd TT |
14284 | if (attr == DW_AT_MIPS_fde) |
14285 | return "DW_AT_MIPS_fde"; | |
14286 | #else | |
14287 | if (attr == DW_AT_HP_block_index) | |
14288 | return "DW_AT_HP_block_index"; | |
c764a876 | 14289 | #endif |
f39c6ffd TT |
14290 | |
14291 | name = get_DW_AT_name (attr); | |
14292 | ||
14293 | if (name == NULL) | |
14294 | return "DW_AT_<unknown>"; | |
14295 | ||
14296 | return name; | |
c906108c SS |
14297 | } |
14298 | ||
14299 | /* Convert a DWARF value form code into its string name. */ | |
14300 | ||
f39c6ffd | 14301 | static const char * |
aa1ee363 | 14302 | dwarf_form_name (unsigned form) |
c906108c | 14303 | { |
f39c6ffd TT |
14304 | const char *name = get_DW_FORM_name (form); |
14305 | ||
14306 | if (name == NULL) | |
14307 | return "DW_FORM_<unknown>"; | |
14308 | ||
14309 | return name; | |
c906108c SS |
14310 | } |
14311 | ||
14312 | static char * | |
fba45db2 | 14313 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
14314 | { |
14315 | if (mybool) | |
14316 | return "TRUE"; | |
14317 | else | |
14318 | return "FALSE"; | |
14319 | } | |
14320 | ||
14321 | /* Convert a DWARF type code into its string name. */ | |
14322 | ||
f39c6ffd | 14323 | static const char * |
aa1ee363 | 14324 | dwarf_type_encoding_name (unsigned enc) |
c906108c | 14325 | { |
f39c6ffd | 14326 | const char *name = get_DW_ATE_name (enc); |
c906108c | 14327 | |
f39c6ffd TT |
14328 | if (name == NULL) |
14329 | return "DW_ATE_<unknown>"; | |
c906108c | 14330 | |
f39c6ffd | 14331 | return name; |
c906108c | 14332 | } |
c906108c | 14333 | |
f9aca02d | 14334 | static void |
d97bc12b | 14335 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
14336 | { |
14337 | unsigned int i; | |
14338 | ||
d97bc12b DE |
14339 | print_spaces (indent, f); |
14340 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset 0x%x)\n", | |
b64f50a1 | 14341 | dwarf_tag_name (die->tag), die->abbrev, die->offset.sect_off); |
d97bc12b DE |
14342 | |
14343 | if (die->parent != NULL) | |
14344 | { | |
14345 | print_spaces (indent, f); | |
14346 | fprintf_unfiltered (f, " parent at offset: 0x%x\n", | |
b64f50a1 | 14347 | die->parent->offset.sect_off); |
d97bc12b DE |
14348 | } |
14349 | ||
14350 | print_spaces (indent, f); | |
14351 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 14352 | dwarf_bool_name (die->child != NULL)); |
c906108c | 14353 | |
d97bc12b DE |
14354 | print_spaces (indent, f); |
14355 | fprintf_unfiltered (f, " attributes:\n"); | |
14356 | ||
c906108c SS |
14357 | for (i = 0; i < die->num_attrs; ++i) |
14358 | { | |
d97bc12b DE |
14359 | print_spaces (indent, f); |
14360 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
14361 | dwarf_attr_name (die->attrs[i].name), |
14362 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 14363 | |
c906108c SS |
14364 | switch (die->attrs[i].form) |
14365 | { | |
c906108c | 14366 | case DW_FORM_addr: |
3019eac3 | 14367 | case DW_FORM_GNU_addr_index: |
d97bc12b | 14368 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 14369 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
14370 | break; |
14371 | case DW_FORM_block2: | |
14372 | case DW_FORM_block4: | |
14373 | case DW_FORM_block: | |
14374 | case DW_FORM_block1: | |
3e43a32a MS |
14375 | fprintf_unfiltered (f, "block: size %d", |
14376 | DW_BLOCK (&die->attrs[i])->size); | |
c906108c | 14377 | break; |
2dc7f7b3 TT |
14378 | case DW_FORM_exprloc: |
14379 | fprintf_unfiltered (f, "expression: size %u", | |
14380 | DW_BLOCK (&die->attrs[i])->size); | |
14381 | break; | |
4568ecf9 DE |
14382 | case DW_FORM_ref_addr: |
14383 | fprintf_unfiltered (f, "ref address: "); | |
14384 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
14385 | break; | |
10b3939b DJ |
14386 | case DW_FORM_ref1: |
14387 | case DW_FORM_ref2: | |
14388 | case DW_FORM_ref4: | |
4568ecf9 DE |
14389 | case DW_FORM_ref8: |
14390 | case DW_FORM_ref_udata: | |
d97bc12b | 14391 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
4568ecf9 | 14392 | (long) (DW_UNSND (&die->attrs[i]))); |
10b3939b | 14393 | break; |
c906108c SS |
14394 | case DW_FORM_data1: |
14395 | case DW_FORM_data2: | |
14396 | case DW_FORM_data4: | |
ce5d95e1 | 14397 | case DW_FORM_data8: |
c906108c SS |
14398 | case DW_FORM_udata: |
14399 | case DW_FORM_sdata: | |
43bbcdc2 PH |
14400 | fprintf_unfiltered (f, "constant: %s", |
14401 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 14402 | break; |
2dc7f7b3 TT |
14403 | case DW_FORM_sec_offset: |
14404 | fprintf_unfiltered (f, "section offset: %s", | |
14405 | pulongest (DW_UNSND (&die->attrs[i]))); | |
14406 | break; | |
55f1336d | 14407 | case DW_FORM_ref_sig8: |
348e048f DE |
14408 | if (DW_SIGNATURED_TYPE (&die->attrs[i]) != NULL) |
14409 | fprintf_unfiltered (f, "signatured type, offset: 0x%x", | |
b64f50a1 | 14410 | DW_SIGNATURED_TYPE (&die->attrs[i])->per_cu.offset.sect_off); |
348e048f DE |
14411 | else |
14412 | fprintf_unfiltered (f, "signatured type, offset: unknown"); | |
14413 | break; | |
c906108c | 14414 | case DW_FORM_string: |
4bdf3d34 | 14415 | case DW_FORM_strp: |
3019eac3 | 14416 | case DW_FORM_GNU_str_index: |
8285870a | 14417 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 14418 | DW_STRING (&die->attrs[i]) |
8285870a JK |
14419 | ? DW_STRING (&die->attrs[i]) : "", |
14420 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
14421 | break; |
14422 | case DW_FORM_flag: | |
14423 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 14424 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 14425 | else |
d97bc12b | 14426 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 14427 | break; |
2dc7f7b3 TT |
14428 | case DW_FORM_flag_present: |
14429 | fprintf_unfiltered (f, "flag: TRUE"); | |
14430 | break; | |
a8329558 | 14431 | case DW_FORM_indirect: |
0963b4bd MS |
14432 | /* The reader will have reduced the indirect form to |
14433 | the "base form" so this form should not occur. */ | |
3e43a32a MS |
14434 | fprintf_unfiltered (f, |
14435 | "unexpected attribute form: DW_FORM_indirect"); | |
a8329558 | 14436 | break; |
c906108c | 14437 | default: |
d97bc12b | 14438 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 14439 | die->attrs[i].form); |
d97bc12b | 14440 | break; |
c906108c | 14441 | } |
d97bc12b | 14442 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
14443 | } |
14444 | } | |
14445 | ||
f9aca02d | 14446 | static void |
d97bc12b | 14447 | dump_die_for_error (struct die_info *die) |
c906108c | 14448 | { |
d97bc12b DE |
14449 | dump_die_shallow (gdb_stderr, 0, die); |
14450 | } | |
14451 | ||
14452 | static void | |
14453 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
14454 | { | |
14455 | int indent = level * 4; | |
14456 | ||
14457 | gdb_assert (die != NULL); | |
14458 | ||
14459 | if (level >= max_level) | |
14460 | return; | |
14461 | ||
14462 | dump_die_shallow (f, indent, die); | |
14463 | ||
14464 | if (die->child != NULL) | |
c906108c | 14465 | { |
d97bc12b DE |
14466 | print_spaces (indent, f); |
14467 | fprintf_unfiltered (f, " Children:"); | |
14468 | if (level + 1 < max_level) | |
14469 | { | |
14470 | fprintf_unfiltered (f, "\n"); | |
14471 | dump_die_1 (f, level + 1, max_level, die->child); | |
14472 | } | |
14473 | else | |
14474 | { | |
3e43a32a MS |
14475 | fprintf_unfiltered (f, |
14476 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
14477 | } |
14478 | } | |
14479 | ||
14480 | if (die->sibling != NULL && level > 0) | |
14481 | { | |
14482 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
14483 | } |
14484 | } | |
14485 | ||
d97bc12b DE |
14486 | /* This is called from the pdie macro in gdbinit.in. |
14487 | It's not static so gcc will keep a copy callable from gdb. */ | |
14488 | ||
14489 | void | |
14490 | dump_die (struct die_info *die, int max_level) | |
14491 | { | |
14492 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
14493 | } | |
14494 | ||
f9aca02d | 14495 | static void |
51545339 | 14496 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14497 | { |
51545339 | 14498 | void **slot; |
c906108c | 14499 | |
b64f50a1 JK |
14500 | slot = htab_find_slot_with_hash (cu->die_hash, die, die->offset.sect_off, |
14501 | INSERT); | |
51545339 DJ |
14502 | |
14503 | *slot = die; | |
c906108c SS |
14504 | } |
14505 | ||
b64f50a1 JK |
14506 | /* DW_ADDR is always stored already as sect_offset; despite for the forms |
14507 | besides DW_FORM_ref_addr it is stored as cu_offset in the DWARF file. */ | |
14508 | ||
93311388 DE |
14509 | static int |
14510 | is_ref_attr (struct attribute *attr) | |
c906108c | 14511 | { |
c906108c SS |
14512 | switch (attr->form) |
14513 | { | |
14514 | case DW_FORM_ref_addr: | |
c906108c SS |
14515 | case DW_FORM_ref1: |
14516 | case DW_FORM_ref2: | |
14517 | case DW_FORM_ref4: | |
613e1657 | 14518 | case DW_FORM_ref8: |
c906108c | 14519 | case DW_FORM_ref_udata: |
93311388 | 14520 | return 1; |
c906108c | 14521 | default: |
93311388 | 14522 | return 0; |
c906108c | 14523 | } |
93311388 DE |
14524 | } |
14525 | ||
b64f50a1 JK |
14526 | /* Return DIE offset of ATTR. Return 0 with complaint if ATTR is not of the |
14527 | required kind. */ | |
14528 | ||
14529 | static sect_offset | |
93311388 DE |
14530 | dwarf2_get_ref_die_offset (struct attribute *attr) |
14531 | { | |
4568ecf9 | 14532 | sect_offset retval = { DW_UNSND (attr) }; |
b64f50a1 | 14533 | |
93311388 | 14534 | if (is_ref_attr (attr)) |
b64f50a1 | 14535 | return retval; |
93311388 | 14536 | |
b64f50a1 | 14537 | retval.sect_off = 0; |
93311388 DE |
14538 | complaint (&symfile_complaints, |
14539 | _("unsupported die ref attribute form: '%s'"), | |
14540 | dwarf_form_name (attr->form)); | |
b64f50a1 | 14541 | return retval; |
c906108c SS |
14542 | } |
14543 | ||
43bbcdc2 PH |
14544 | /* Return the constant value held by ATTR. Return DEFAULT_VALUE if |
14545 | * the value held by the attribute is not constant. */ | |
a02abb62 | 14546 | |
43bbcdc2 | 14547 | static LONGEST |
a02abb62 JB |
14548 | dwarf2_get_attr_constant_value (struct attribute *attr, int default_value) |
14549 | { | |
14550 | if (attr->form == DW_FORM_sdata) | |
14551 | return DW_SND (attr); | |
14552 | else if (attr->form == DW_FORM_udata | |
14553 | || attr->form == DW_FORM_data1 | |
14554 | || attr->form == DW_FORM_data2 | |
14555 | || attr->form == DW_FORM_data4 | |
14556 | || attr->form == DW_FORM_data8) | |
14557 | return DW_UNSND (attr); | |
14558 | else | |
14559 | { | |
3e43a32a MS |
14560 | complaint (&symfile_complaints, |
14561 | _("Attribute value is not a constant (%s)"), | |
a02abb62 JB |
14562 | dwarf_form_name (attr->form)); |
14563 | return default_value; | |
14564 | } | |
14565 | } | |
14566 | ||
03dd20cc | 14567 | /* THIS_CU has a reference to PER_CU. If necessary, load the new compilation |
348e048f DE |
14568 | unit and add it to our queue. |
14569 | The result is non-zero if PER_CU was queued, otherwise the result is zero | |
14570 | meaning either PER_CU is already queued or it is already loaded. */ | |
03dd20cc | 14571 | |
348e048f | 14572 | static int |
03dd20cc DJ |
14573 | maybe_queue_comp_unit (struct dwarf2_cu *this_cu, |
14574 | struct dwarf2_per_cu_data *per_cu) | |
14575 | { | |
98bfdba5 PA |
14576 | /* We may arrive here during partial symbol reading, if we need full |
14577 | DIEs to process an unusual case (e.g. template arguments). Do | |
14578 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
14579 | if (dwarf2_per_objfile->reading_partial_symbols) | |
14580 | { | |
14581 | if (per_cu->cu == NULL || per_cu->cu->dies == NULL) | |
14582 | return 1; | |
14583 | return 0; | |
14584 | } | |
14585 | ||
03dd20cc DJ |
14586 | /* Mark the dependence relation so that we don't flush PER_CU |
14587 | too early. */ | |
14588 | dwarf2_add_dependence (this_cu, per_cu); | |
14589 | ||
14590 | /* If it's already on the queue, we have nothing to do. */ | |
14591 | if (per_cu->queued) | |
348e048f | 14592 | return 0; |
03dd20cc DJ |
14593 | |
14594 | /* If the compilation unit is already loaded, just mark it as | |
14595 | used. */ | |
14596 | if (per_cu->cu != NULL) | |
14597 | { | |
14598 | per_cu->cu->last_used = 0; | |
348e048f | 14599 | return 0; |
03dd20cc DJ |
14600 | } |
14601 | ||
14602 | /* Add it to the queue. */ | |
a0f42c21 | 14603 | queue_comp_unit (per_cu); |
348e048f DE |
14604 | |
14605 | return 1; | |
14606 | } | |
14607 | ||
14608 | /* Follow reference or signature attribute ATTR of SRC_DIE. | |
14609 | On entry *REF_CU is the CU of SRC_DIE. | |
14610 | On exit *REF_CU is the CU of the result. */ | |
14611 | ||
14612 | static struct die_info * | |
14613 | follow_die_ref_or_sig (struct die_info *src_die, struct attribute *attr, | |
14614 | struct dwarf2_cu **ref_cu) | |
14615 | { | |
14616 | struct die_info *die; | |
14617 | ||
14618 | if (is_ref_attr (attr)) | |
14619 | die = follow_die_ref (src_die, attr, ref_cu); | |
55f1336d | 14620 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
14621 | die = follow_die_sig (src_die, attr, ref_cu); |
14622 | else | |
14623 | { | |
14624 | dump_die_for_error (src_die); | |
14625 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
14626 | (*ref_cu)->objfile->name); | |
14627 | } | |
14628 | ||
14629 | return die; | |
03dd20cc DJ |
14630 | } |
14631 | ||
5c631832 | 14632 | /* Follow reference OFFSET. |
673bfd45 DE |
14633 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
14634 | On exit *REF_CU is the CU of the result. | |
14635 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 14636 | |
f9aca02d | 14637 | static struct die_info * |
b64f50a1 | 14638 | follow_die_offset (sect_offset offset, struct dwarf2_cu **ref_cu) |
c906108c | 14639 | { |
10b3939b | 14640 | struct die_info temp_die; |
f2f0e013 | 14641 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
10b3939b | 14642 | |
348e048f DE |
14643 | gdb_assert (cu->per_cu != NULL); |
14644 | ||
98bfdba5 PA |
14645 | target_cu = cu; |
14646 | ||
3019eac3 | 14647 | if (cu->per_cu->is_debug_types) |
348e048f DE |
14648 | { |
14649 | /* .debug_types CUs cannot reference anything outside their CU. | |
14650 | If they need to, they have to reference a signatured type via | |
55f1336d | 14651 | DW_FORM_ref_sig8. */ |
348e048f | 14652 | if (! offset_in_cu_p (&cu->header, offset)) |
5c631832 | 14653 | return NULL; |
348e048f DE |
14654 | } |
14655 | else if (! offset_in_cu_p (&cu->header, offset)) | |
10b3939b DJ |
14656 | { |
14657 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 14658 | |
45452591 | 14659 | per_cu = dwarf2_find_containing_comp_unit (offset, cu->objfile); |
03dd20cc DJ |
14660 | |
14661 | /* If necessary, add it to the queue and load its DIEs. */ | |
348e048f | 14662 | if (maybe_queue_comp_unit (cu, per_cu)) |
a0f42c21 | 14663 | load_full_comp_unit (per_cu); |
03dd20cc | 14664 | |
10b3939b DJ |
14665 | target_cu = per_cu->cu; |
14666 | } | |
98bfdba5 PA |
14667 | else if (cu->dies == NULL) |
14668 | { | |
14669 | /* We're loading full DIEs during partial symbol reading. */ | |
14670 | gdb_assert (dwarf2_per_objfile->reading_partial_symbols); | |
a0f42c21 | 14671 | load_full_comp_unit (cu->per_cu); |
98bfdba5 | 14672 | } |
c906108c | 14673 | |
f2f0e013 | 14674 | *ref_cu = target_cu; |
51545339 | 14675 | temp_die.offset = offset; |
b64f50a1 | 14676 | return htab_find_with_hash (target_cu->die_hash, &temp_die, offset.sect_off); |
5c631832 | 14677 | } |
10b3939b | 14678 | |
5c631832 JK |
14679 | /* Follow reference attribute ATTR of SRC_DIE. |
14680 | On entry *REF_CU is the CU of SRC_DIE. | |
14681 | On exit *REF_CU is the CU of the result. */ | |
14682 | ||
14683 | static struct die_info * | |
14684 | follow_die_ref (struct die_info *src_die, struct attribute *attr, | |
14685 | struct dwarf2_cu **ref_cu) | |
14686 | { | |
b64f50a1 | 14687 | sect_offset offset = dwarf2_get_ref_die_offset (attr); |
5c631832 JK |
14688 | struct dwarf2_cu *cu = *ref_cu; |
14689 | struct die_info *die; | |
14690 | ||
14691 | die = follow_die_offset (offset, ref_cu); | |
14692 | if (!die) | |
14693 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced from DIE " | |
14694 | "at 0x%x [in module %s]"), | |
b64f50a1 | 14695 | offset.sect_off, src_die->offset.sect_off, cu->objfile->name); |
348e048f | 14696 | |
5c631832 JK |
14697 | return die; |
14698 | } | |
14699 | ||
d83e736b JK |
14700 | /* Return DWARF block referenced by DW_AT_location of DIE at OFFSET at PER_CU. |
14701 | Returned value is intended for DW_OP_call*. Returned | |
14702 | dwarf2_locexpr_baton->data has lifetime of PER_CU->OBJFILE. */ | |
5c631832 JK |
14703 | |
14704 | struct dwarf2_locexpr_baton | |
b64f50a1 | 14705 | dwarf2_fetch_die_location_block (cu_offset offset_in_cu, |
8cf6f0b1 TT |
14706 | struct dwarf2_per_cu_data *per_cu, |
14707 | CORE_ADDR (*get_frame_pc) (void *baton), | |
14708 | void *baton) | |
5c631832 | 14709 | { |
b64f50a1 | 14710 | sect_offset offset = { per_cu->offset.sect_off + offset_in_cu.cu_off }; |
918dd910 | 14711 | struct dwarf2_cu *cu; |
5c631832 JK |
14712 | struct die_info *die; |
14713 | struct attribute *attr; | |
14714 | struct dwarf2_locexpr_baton retval; | |
14715 | ||
8cf6f0b1 TT |
14716 | dw2_setup (per_cu->objfile); |
14717 | ||
918dd910 JK |
14718 | if (per_cu->cu == NULL) |
14719 | load_cu (per_cu); | |
14720 | cu = per_cu->cu; | |
14721 | ||
5c631832 JK |
14722 | die = follow_die_offset (offset, &cu); |
14723 | if (!die) | |
14724 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced in module %s"), | |
b64f50a1 | 14725 | offset.sect_off, per_cu->objfile->name); |
5c631832 JK |
14726 | |
14727 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
14728 | if (!attr) | |
14729 | { | |
e103e986 JK |
14730 | /* DWARF: "If there is no such attribute, then there is no effect.". |
14731 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 14732 | |
e103e986 | 14733 | retval.data = NULL; |
5c631832 JK |
14734 | retval.size = 0; |
14735 | } | |
8cf6f0b1 TT |
14736 | else if (attr_form_is_section_offset (attr)) |
14737 | { | |
14738 | struct dwarf2_loclist_baton loclist_baton; | |
14739 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
14740 | size_t size; | |
14741 | ||
14742 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
14743 | ||
14744 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
14745 | &size, pc); | |
14746 | retval.size = size; | |
14747 | } | |
5c631832 JK |
14748 | else |
14749 | { | |
14750 | if (!attr_form_is_block (attr)) | |
14751 | error (_("Dwarf Error: DIE at 0x%x referenced in module %s " | |
14752 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), | |
b64f50a1 | 14753 | offset.sect_off, per_cu->objfile->name); |
5c631832 JK |
14754 | |
14755 | retval.data = DW_BLOCK (attr)->data; | |
14756 | retval.size = DW_BLOCK (attr)->size; | |
14757 | } | |
14758 | retval.per_cu = cu->per_cu; | |
918dd910 | 14759 | |
918dd910 JK |
14760 | age_cached_comp_units (); |
14761 | ||
5c631832 | 14762 | return retval; |
348e048f DE |
14763 | } |
14764 | ||
8a9b8146 TT |
14765 | /* Return the type of the DIE at DIE_OFFSET in the CU named by |
14766 | PER_CU. */ | |
14767 | ||
14768 | struct type * | |
b64f50a1 | 14769 | dwarf2_get_die_type (cu_offset die_offset, |
8a9b8146 TT |
14770 | struct dwarf2_per_cu_data *per_cu) |
14771 | { | |
b64f50a1 JK |
14772 | sect_offset die_offset_sect; |
14773 | ||
8a9b8146 | 14774 | dw2_setup (per_cu->objfile); |
b64f50a1 JK |
14775 | |
14776 | die_offset_sect.sect_off = per_cu->offset.sect_off + die_offset.cu_off; | |
14777 | return get_die_type_at_offset (die_offset_sect, per_cu); | |
8a9b8146 TT |
14778 | } |
14779 | ||
348e048f DE |
14780 | /* Follow the signature attribute ATTR in SRC_DIE. |
14781 | On entry *REF_CU is the CU of SRC_DIE. | |
14782 | On exit *REF_CU is the CU of the result. */ | |
14783 | ||
14784 | static struct die_info * | |
14785 | follow_die_sig (struct die_info *src_die, struct attribute *attr, | |
14786 | struct dwarf2_cu **ref_cu) | |
14787 | { | |
14788 | struct objfile *objfile = (*ref_cu)->objfile; | |
14789 | struct die_info temp_die; | |
14790 | struct signatured_type *sig_type = DW_SIGNATURED_TYPE (attr); | |
14791 | struct dwarf2_cu *sig_cu; | |
14792 | struct die_info *die; | |
14793 | ||
14794 | /* sig_type will be NULL if the signatured type is missing from | |
14795 | the debug info. */ | |
14796 | if (sig_type == NULL) | |
14797 | error (_("Dwarf Error: Cannot find signatured DIE referenced from DIE " | |
14798 | "at 0x%x [in module %s]"), | |
b64f50a1 | 14799 | src_die->offset.sect_off, objfile->name); |
348e048f DE |
14800 | |
14801 | /* If necessary, add it to the queue and load its DIEs. */ | |
14802 | ||
14803 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu)) | |
a0f42c21 | 14804 | read_signatured_type (sig_type); |
348e048f DE |
14805 | |
14806 | gdb_assert (sig_type->per_cu.cu != NULL); | |
14807 | ||
14808 | sig_cu = sig_type->per_cu.cu; | |
3019eac3 DE |
14809 | gdb_assert (sig_type->type_offset_in_section.sect_off != 0); |
14810 | temp_die.offset = sig_type->type_offset_in_section; | |
b64f50a1 JK |
14811 | die = htab_find_with_hash (sig_cu->die_hash, &temp_die, |
14812 | temp_die.offset.sect_off); | |
348e048f DE |
14813 | if (die) |
14814 | { | |
14815 | *ref_cu = sig_cu; | |
14816 | return die; | |
14817 | } | |
14818 | ||
3e43a32a MS |
14819 | error (_("Dwarf Error: Cannot find signatured DIE at 0x%x referenced " |
14820 | "from DIE at 0x%x [in module %s]"), | |
b64f50a1 | 14821 | temp_die.offset.sect_off, src_die->offset.sect_off, objfile->name); |
348e048f DE |
14822 | } |
14823 | ||
14824 | /* Given an offset of a signatured type, return its signatured_type. */ | |
14825 | ||
14826 | static struct signatured_type * | |
8b70b953 TT |
14827 | lookup_signatured_type_at_offset (struct objfile *objfile, |
14828 | struct dwarf2_section_info *section, | |
b64f50a1 | 14829 | sect_offset offset) |
348e048f | 14830 | { |
b64f50a1 | 14831 | gdb_byte *info_ptr = section->buffer + offset.sect_off; |
348e048f DE |
14832 | unsigned int length, initial_length_size; |
14833 | unsigned int sig_offset; | |
52dc124a | 14834 | struct signatured_type find_entry, *sig_type; |
348e048f DE |
14835 | |
14836 | length = read_initial_length (objfile->obfd, info_ptr, &initial_length_size); | |
14837 | sig_offset = (initial_length_size | |
14838 | + 2 /*version*/ | |
14839 | + (initial_length_size == 4 ? 4 : 8) /*debug_abbrev_offset*/ | |
14840 | + 1 /*address_size*/); | |
14841 | find_entry.signature = bfd_get_64 (objfile->obfd, info_ptr + sig_offset); | |
52dc124a | 14842 | sig_type = htab_find (dwarf2_per_objfile->signatured_types, &find_entry); |
348e048f DE |
14843 | |
14844 | /* This is only used to lookup previously recorded types. | |
14845 | If we didn't find it, it's our bug. */ | |
52dc124a DE |
14846 | gdb_assert (sig_type != NULL); |
14847 | gdb_assert (offset.sect_off == sig_type->per_cu.offset.sect_off); | |
348e048f | 14848 | |
52dc124a | 14849 | return sig_type; |
348e048f DE |
14850 | } |
14851 | ||
e5fe5e75 | 14852 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
14853 | |
14854 | static void | |
e5fe5e75 | 14855 | load_full_type_unit (struct dwarf2_per_cu_data *per_cu) |
348e048f | 14856 | { |
e5fe5e75 | 14857 | struct objfile *objfile = per_cu->objfile; |
3019eac3 | 14858 | struct dwarf2_section_info *sect = per_cu->info_or_types_section; |
b64f50a1 | 14859 | sect_offset offset = per_cu->offset; |
52dc124a | 14860 | struct signatured_type *sig_type; |
348e048f | 14861 | |
8b70b953 | 14862 | dwarf2_read_section (objfile, sect); |
be391dca | 14863 | |
348e048f | 14864 | /* We have the section offset, but we need the signature to do the |
e5fe5e75 DE |
14865 | hash table lookup. */ |
14866 | /* FIXME: This is sorta unnecessary, read_signatured_type only uses | |
14867 | the signature to assert we found the right one. | |
14868 | Ok, but it's a lot of work. We should simplify things so any needed | |
14869 | assert doesn't require all this clumsiness. */ | |
52dc124a | 14870 | sig_type = lookup_signatured_type_at_offset (objfile, sect, offset); |
348e048f | 14871 | |
dee91e82 | 14872 | gdb_assert (&sig_type->per_cu == per_cu); |
52dc124a | 14873 | gdb_assert (sig_type->per_cu.cu == NULL); |
348e048f | 14874 | |
52dc124a | 14875 | read_signatured_type (sig_type); |
348e048f | 14876 | |
52dc124a | 14877 | gdb_assert (sig_type->per_cu.cu != NULL); |
348e048f DE |
14878 | } |
14879 | ||
dee91e82 DE |
14880 | /* die_reader_func for read_signatured_type. |
14881 | This is identical to load_full_comp_unit_reader, | |
14882 | but is kept separate for now. */ | |
348e048f DE |
14883 | |
14884 | static void | |
dee91e82 DE |
14885 | read_signatured_type_reader (const struct die_reader_specs *reader, |
14886 | gdb_byte *info_ptr, | |
14887 | struct die_info *comp_unit_die, | |
14888 | int has_children, | |
14889 | void *data) | |
348e048f | 14890 | { |
dee91e82 DE |
14891 | struct dwarf2_cu *cu = reader->cu; |
14892 | struct attribute *attr; | |
348e048f | 14893 | |
dee91e82 DE |
14894 | gdb_assert (cu->die_hash == NULL); |
14895 | cu->die_hash = | |
14896 | htab_create_alloc_ex (cu->header.length / 12, | |
14897 | die_hash, | |
14898 | die_eq, | |
14899 | NULL, | |
14900 | &cu->comp_unit_obstack, | |
14901 | hashtab_obstack_allocate, | |
14902 | dummy_obstack_deallocate); | |
348e048f | 14903 | |
dee91e82 DE |
14904 | if (has_children) |
14905 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
14906 | &info_ptr, comp_unit_die); | |
14907 | cu->dies = comp_unit_die; | |
14908 | /* comp_unit_die is not stored in die_hash, no need. */ | |
348e048f DE |
14909 | |
14910 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 14911 | all CUs needed for references have been loaded yet, and symbol |
348e048f | 14912 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
14913 | or we won't be able to build types correctly. |
14914 | Similarly, if we do not read the producer, we can not apply | |
14915 | producer-specific interpretation. */ | |
9816fde3 | 14916 | prepare_one_comp_unit (cu, cu->dies); |
dee91e82 | 14917 | } |
348e048f | 14918 | |
3019eac3 DE |
14919 | /* Read in a signatured type and build its CU and DIEs. |
14920 | If the type is a stub for the real type in a DWO file, | |
14921 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
14922 | |
14923 | static void | |
14924 | read_signatured_type (struct signatured_type *sig_type) | |
14925 | { | |
14926 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 14927 | |
3019eac3 | 14928 | gdb_assert (per_cu->is_debug_types); |
dee91e82 | 14929 | gdb_assert (per_cu->cu == NULL); |
348e048f | 14930 | |
fd820528 | 14931 | init_cutu_and_read_dies (per_cu, 0, 1, read_signatured_type_reader, NULL); |
c906108c SS |
14932 | } |
14933 | ||
c906108c SS |
14934 | /* Decode simple location descriptions. |
14935 | Given a pointer to a dwarf block that defines a location, compute | |
14936 | the location and return the value. | |
14937 | ||
4cecd739 DJ |
14938 | NOTE drow/2003-11-18: This function is called in two situations |
14939 | now: for the address of static or global variables (partial symbols | |
14940 | only) and for offsets into structures which are expected to be | |
14941 | (more or less) constant. The partial symbol case should go away, | |
14942 | and only the constant case should remain. That will let this | |
14943 | function complain more accurately. A few special modes are allowed | |
14944 | without complaint for global variables (for instance, global | |
14945 | register values and thread-local values). | |
c906108c SS |
14946 | |
14947 | A location description containing no operations indicates that the | |
4cecd739 | 14948 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
14949 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
14950 | callers will only want a very basic result and this can become a | |
21ae7a4d JK |
14951 | complaint. |
14952 | ||
14953 | Note that stack[0] is unused except as a default error return. */ | |
c906108c SS |
14954 | |
14955 | static CORE_ADDR | |
e7c27a73 | 14956 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 14957 | { |
e7c27a73 | 14958 | struct objfile *objfile = cu->objfile; |
21ae7a4d JK |
14959 | int i; |
14960 | int size = blk->size; | |
14961 | gdb_byte *data = blk->data; | |
14962 | CORE_ADDR stack[64]; | |
14963 | int stacki; | |
14964 | unsigned int bytes_read, unsnd; | |
14965 | gdb_byte op; | |
c906108c | 14966 | |
21ae7a4d JK |
14967 | i = 0; |
14968 | stacki = 0; | |
14969 | stack[stacki] = 0; | |
14970 | stack[++stacki] = 0; | |
14971 | ||
14972 | while (i < size) | |
14973 | { | |
14974 | op = data[i++]; | |
14975 | switch (op) | |
14976 | { | |
14977 | case DW_OP_lit0: | |
14978 | case DW_OP_lit1: | |
14979 | case DW_OP_lit2: | |
14980 | case DW_OP_lit3: | |
14981 | case DW_OP_lit4: | |
14982 | case DW_OP_lit5: | |
14983 | case DW_OP_lit6: | |
14984 | case DW_OP_lit7: | |
14985 | case DW_OP_lit8: | |
14986 | case DW_OP_lit9: | |
14987 | case DW_OP_lit10: | |
14988 | case DW_OP_lit11: | |
14989 | case DW_OP_lit12: | |
14990 | case DW_OP_lit13: | |
14991 | case DW_OP_lit14: | |
14992 | case DW_OP_lit15: | |
14993 | case DW_OP_lit16: | |
14994 | case DW_OP_lit17: | |
14995 | case DW_OP_lit18: | |
14996 | case DW_OP_lit19: | |
14997 | case DW_OP_lit20: | |
14998 | case DW_OP_lit21: | |
14999 | case DW_OP_lit22: | |
15000 | case DW_OP_lit23: | |
15001 | case DW_OP_lit24: | |
15002 | case DW_OP_lit25: | |
15003 | case DW_OP_lit26: | |
15004 | case DW_OP_lit27: | |
15005 | case DW_OP_lit28: | |
15006 | case DW_OP_lit29: | |
15007 | case DW_OP_lit30: | |
15008 | case DW_OP_lit31: | |
15009 | stack[++stacki] = op - DW_OP_lit0; | |
15010 | break; | |
f1bea926 | 15011 | |
21ae7a4d JK |
15012 | case DW_OP_reg0: |
15013 | case DW_OP_reg1: | |
15014 | case DW_OP_reg2: | |
15015 | case DW_OP_reg3: | |
15016 | case DW_OP_reg4: | |
15017 | case DW_OP_reg5: | |
15018 | case DW_OP_reg6: | |
15019 | case DW_OP_reg7: | |
15020 | case DW_OP_reg8: | |
15021 | case DW_OP_reg9: | |
15022 | case DW_OP_reg10: | |
15023 | case DW_OP_reg11: | |
15024 | case DW_OP_reg12: | |
15025 | case DW_OP_reg13: | |
15026 | case DW_OP_reg14: | |
15027 | case DW_OP_reg15: | |
15028 | case DW_OP_reg16: | |
15029 | case DW_OP_reg17: | |
15030 | case DW_OP_reg18: | |
15031 | case DW_OP_reg19: | |
15032 | case DW_OP_reg20: | |
15033 | case DW_OP_reg21: | |
15034 | case DW_OP_reg22: | |
15035 | case DW_OP_reg23: | |
15036 | case DW_OP_reg24: | |
15037 | case DW_OP_reg25: | |
15038 | case DW_OP_reg26: | |
15039 | case DW_OP_reg27: | |
15040 | case DW_OP_reg28: | |
15041 | case DW_OP_reg29: | |
15042 | case DW_OP_reg30: | |
15043 | case DW_OP_reg31: | |
15044 | stack[++stacki] = op - DW_OP_reg0; | |
15045 | if (i < size) | |
15046 | dwarf2_complex_location_expr_complaint (); | |
15047 | break; | |
c906108c | 15048 | |
21ae7a4d JK |
15049 | case DW_OP_regx: |
15050 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
15051 | i += bytes_read; | |
15052 | stack[++stacki] = unsnd; | |
15053 | if (i < size) | |
15054 | dwarf2_complex_location_expr_complaint (); | |
15055 | break; | |
c906108c | 15056 | |
21ae7a4d JK |
15057 | case DW_OP_addr: |
15058 | stack[++stacki] = read_address (objfile->obfd, &data[i], | |
15059 | cu, &bytes_read); | |
15060 | i += bytes_read; | |
15061 | break; | |
d53d4ac5 | 15062 | |
21ae7a4d JK |
15063 | case DW_OP_const1u: |
15064 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
15065 | i += 1; | |
15066 | break; | |
15067 | ||
15068 | case DW_OP_const1s: | |
15069 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
15070 | i += 1; | |
15071 | break; | |
15072 | ||
15073 | case DW_OP_const2u: | |
15074 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
15075 | i += 2; | |
15076 | break; | |
15077 | ||
15078 | case DW_OP_const2s: | |
15079 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
15080 | i += 2; | |
15081 | break; | |
d53d4ac5 | 15082 | |
21ae7a4d JK |
15083 | case DW_OP_const4u: |
15084 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
15085 | i += 4; | |
15086 | break; | |
15087 | ||
15088 | case DW_OP_const4s: | |
15089 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
15090 | i += 4; | |
15091 | break; | |
15092 | ||
585861ea JK |
15093 | case DW_OP_const8u: |
15094 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
15095 | i += 8; | |
15096 | break; | |
15097 | ||
21ae7a4d JK |
15098 | case DW_OP_constu: |
15099 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
15100 | &bytes_read); | |
15101 | i += bytes_read; | |
15102 | break; | |
15103 | ||
15104 | case DW_OP_consts: | |
15105 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
15106 | i += bytes_read; | |
15107 | break; | |
15108 | ||
15109 | case DW_OP_dup: | |
15110 | stack[stacki + 1] = stack[stacki]; | |
15111 | stacki++; | |
15112 | break; | |
15113 | ||
15114 | case DW_OP_plus: | |
15115 | stack[stacki - 1] += stack[stacki]; | |
15116 | stacki--; | |
15117 | break; | |
15118 | ||
15119 | case DW_OP_plus_uconst: | |
15120 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
15121 | &bytes_read); | |
15122 | i += bytes_read; | |
15123 | break; | |
15124 | ||
15125 | case DW_OP_minus: | |
15126 | stack[stacki - 1] -= stack[stacki]; | |
15127 | stacki--; | |
15128 | break; | |
15129 | ||
15130 | case DW_OP_deref: | |
15131 | /* If we're not the last op, then we definitely can't encode | |
15132 | this using GDB's address_class enum. This is valid for partial | |
15133 | global symbols, although the variable's address will be bogus | |
15134 | in the psymtab. */ | |
15135 | if (i < size) | |
15136 | dwarf2_complex_location_expr_complaint (); | |
15137 | break; | |
15138 | ||
15139 | case DW_OP_GNU_push_tls_address: | |
15140 | /* The top of the stack has the offset from the beginning | |
15141 | of the thread control block at which the variable is located. */ | |
15142 | /* Nothing should follow this operator, so the top of stack would | |
15143 | be returned. */ | |
15144 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
15145 | address will be bogus in the psymtab. Make it always at least |
15146 | non-zero to not look as a variable garbage collected by linker | |
15147 | which have DW_OP_addr 0. */ | |
21ae7a4d JK |
15148 | if (i < size) |
15149 | dwarf2_complex_location_expr_complaint (); | |
585861ea | 15150 | stack[stacki]++; |
21ae7a4d JK |
15151 | break; |
15152 | ||
15153 | case DW_OP_GNU_uninit: | |
15154 | break; | |
15155 | ||
3019eac3 DE |
15156 | case DW_OP_GNU_addr_index: |
15157 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], | |
15158 | &bytes_read); | |
15159 | i += bytes_read; | |
15160 | break; | |
15161 | ||
21ae7a4d JK |
15162 | default: |
15163 | { | |
f39c6ffd | 15164 | const char *name = get_DW_OP_name (op); |
21ae7a4d JK |
15165 | |
15166 | if (name) | |
15167 | complaint (&symfile_complaints, _("unsupported stack op: '%s'"), | |
15168 | name); | |
15169 | else | |
15170 | complaint (&symfile_complaints, _("unsupported stack op: '%02x'"), | |
15171 | op); | |
15172 | } | |
15173 | ||
15174 | return (stack[stacki]); | |
d53d4ac5 | 15175 | } |
3c6e0cb3 | 15176 | |
21ae7a4d JK |
15177 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
15178 | outside of the allocated space. Also enforce minimum>0. */ | |
15179 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
15180 | { | |
15181 | complaint (&symfile_complaints, | |
15182 | _("location description stack overflow")); | |
15183 | return 0; | |
15184 | } | |
15185 | ||
15186 | if (stacki <= 0) | |
15187 | { | |
15188 | complaint (&symfile_complaints, | |
15189 | _("location description stack underflow")); | |
15190 | return 0; | |
15191 | } | |
15192 | } | |
15193 | return (stack[stacki]); | |
c906108c SS |
15194 | } |
15195 | ||
15196 | /* memory allocation interface */ | |
15197 | ||
c906108c | 15198 | static struct dwarf_block * |
7b5a2f43 | 15199 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c SS |
15200 | { |
15201 | struct dwarf_block *blk; | |
15202 | ||
15203 | blk = (struct dwarf_block *) | |
7b5a2f43 | 15204 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct dwarf_block)); |
c906108c SS |
15205 | return (blk); |
15206 | } | |
15207 | ||
15208 | static struct abbrev_info * | |
f3dd6933 | 15209 | dwarf_alloc_abbrev (struct dwarf2_cu *cu) |
c906108c SS |
15210 | { |
15211 | struct abbrev_info *abbrev; | |
15212 | ||
f3dd6933 DJ |
15213 | abbrev = (struct abbrev_info *) |
15214 | obstack_alloc (&cu->abbrev_obstack, sizeof (struct abbrev_info)); | |
c906108c SS |
15215 | memset (abbrev, 0, sizeof (struct abbrev_info)); |
15216 | return (abbrev); | |
15217 | } | |
15218 | ||
15219 | static struct die_info * | |
b60c80d6 | 15220 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
15221 | { |
15222 | struct die_info *die; | |
b60c80d6 DJ |
15223 | size_t size = sizeof (struct die_info); |
15224 | ||
15225 | if (num_attrs > 1) | |
15226 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 15227 | |
b60c80d6 | 15228 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
15229 | memset (die, 0, sizeof (struct die_info)); |
15230 | return (die); | |
15231 | } | |
2e276125 JB |
15232 | |
15233 | \f | |
15234 | /* Macro support. */ | |
15235 | ||
2e276125 JB |
15236 | /* Return the full name of file number I in *LH's file name table. |
15237 | Use COMP_DIR as the name of the current directory of the | |
15238 | compilation. The result is allocated using xmalloc; the caller is | |
15239 | responsible for freeing it. */ | |
15240 | static char * | |
15241 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
15242 | { | |
6a83a1e6 EZ |
15243 | /* Is the file number a valid index into the line header's file name |
15244 | table? Remember that file numbers start with one, not zero. */ | |
15245 | if (1 <= file && file <= lh->num_file_names) | |
15246 | { | |
15247 | struct file_entry *fe = &lh->file_names[file - 1]; | |
6e70227d | 15248 | |
6a83a1e6 EZ |
15249 | if (IS_ABSOLUTE_PATH (fe->name)) |
15250 | return xstrdup (fe->name); | |
15251 | else | |
15252 | { | |
15253 | const char *dir; | |
15254 | int dir_len; | |
15255 | char *full_name; | |
15256 | ||
15257 | if (fe->dir_index) | |
15258 | dir = lh->include_dirs[fe->dir_index - 1]; | |
15259 | else | |
15260 | dir = comp_dir; | |
15261 | ||
15262 | if (dir) | |
15263 | { | |
15264 | dir_len = strlen (dir); | |
15265 | full_name = xmalloc (dir_len + 1 + strlen (fe->name) + 1); | |
15266 | strcpy (full_name, dir); | |
15267 | full_name[dir_len] = '/'; | |
15268 | strcpy (full_name + dir_len + 1, fe->name); | |
15269 | return full_name; | |
15270 | } | |
15271 | else | |
15272 | return xstrdup (fe->name); | |
15273 | } | |
15274 | } | |
2e276125 JB |
15275 | else |
15276 | { | |
6a83a1e6 EZ |
15277 | /* The compiler produced a bogus file number. We can at least |
15278 | record the macro definitions made in the file, even if we | |
15279 | won't be able to find the file by name. */ | |
15280 | char fake_name[80]; | |
9a619af0 | 15281 | |
6a83a1e6 | 15282 | sprintf (fake_name, "<bad macro file number %d>", file); |
2e276125 | 15283 | |
6e70227d | 15284 | complaint (&symfile_complaints, |
6a83a1e6 EZ |
15285 | _("bad file number in macro information (%d)"), |
15286 | file); | |
2e276125 | 15287 | |
6a83a1e6 | 15288 | return xstrdup (fake_name); |
2e276125 JB |
15289 | } |
15290 | } | |
15291 | ||
15292 | ||
15293 | static struct macro_source_file * | |
15294 | macro_start_file (int file, int line, | |
15295 | struct macro_source_file *current_file, | |
15296 | const char *comp_dir, | |
15297 | struct line_header *lh, struct objfile *objfile) | |
15298 | { | |
15299 | /* The full name of this source file. */ | |
15300 | char *full_name = file_full_name (file, lh, comp_dir); | |
15301 | ||
15302 | /* We don't create a macro table for this compilation unit | |
15303 | at all until we actually get a filename. */ | |
15304 | if (! pending_macros) | |
4a146b47 | 15305 | pending_macros = new_macro_table (&objfile->objfile_obstack, |
af5f3db6 | 15306 | objfile->macro_cache); |
2e276125 JB |
15307 | |
15308 | if (! current_file) | |
15309 | /* If we have no current file, then this must be the start_file | |
15310 | directive for the compilation unit's main source file. */ | |
15311 | current_file = macro_set_main (pending_macros, full_name); | |
15312 | else | |
15313 | current_file = macro_include (current_file, line, full_name); | |
15314 | ||
15315 | xfree (full_name); | |
6e70227d | 15316 | |
2e276125 JB |
15317 | return current_file; |
15318 | } | |
15319 | ||
15320 | ||
15321 | /* Copy the LEN characters at BUF to a xmalloc'ed block of memory, | |
15322 | followed by a null byte. */ | |
15323 | static char * | |
15324 | copy_string (const char *buf, int len) | |
15325 | { | |
15326 | char *s = xmalloc (len + 1); | |
9a619af0 | 15327 | |
2e276125 JB |
15328 | memcpy (s, buf, len); |
15329 | s[len] = '\0'; | |
2e276125 JB |
15330 | return s; |
15331 | } | |
15332 | ||
15333 | ||
15334 | static const char * | |
15335 | consume_improper_spaces (const char *p, const char *body) | |
15336 | { | |
15337 | if (*p == ' ') | |
15338 | { | |
4d3c2250 | 15339 | complaint (&symfile_complaints, |
3e43a32a MS |
15340 | _("macro definition contains spaces " |
15341 | "in formal argument list:\n`%s'"), | |
4d3c2250 | 15342 | body); |
2e276125 JB |
15343 | |
15344 | while (*p == ' ') | |
15345 | p++; | |
15346 | } | |
15347 | ||
15348 | return p; | |
15349 | } | |
15350 | ||
15351 | ||
15352 | static void | |
15353 | parse_macro_definition (struct macro_source_file *file, int line, | |
15354 | const char *body) | |
15355 | { | |
15356 | const char *p; | |
15357 | ||
15358 | /* The body string takes one of two forms. For object-like macro | |
15359 | definitions, it should be: | |
15360 | ||
15361 | <macro name> " " <definition> | |
15362 | ||
15363 | For function-like macro definitions, it should be: | |
15364 | ||
15365 | <macro name> "() " <definition> | |
15366 | or | |
15367 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
15368 | ||
15369 | Spaces may appear only where explicitly indicated, and in the | |
15370 | <definition>. | |
15371 | ||
15372 | The Dwarf 2 spec says that an object-like macro's name is always | |
15373 | followed by a space, but versions of GCC around March 2002 omit | |
6e70227d | 15374 | the space when the macro's definition is the empty string. |
2e276125 JB |
15375 | |
15376 | The Dwarf 2 spec says that there should be no spaces between the | |
15377 | formal arguments in a function-like macro's formal argument list, | |
15378 | but versions of GCC around March 2002 include spaces after the | |
15379 | commas. */ | |
15380 | ||
15381 | ||
15382 | /* Find the extent of the macro name. The macro name is terminated | |
15383 | by either a space or null character (for an object-like macro) or | |
15384 | an opening paren (for a function-like macro). */ | |
15385 | for (p = body; *p; p++) | |
15386 | if (*p == ' ' || *p == '(') | |
15387 | break; | |
15388 | ||
15389 | if (*p == ' ' || *p == '\0') | |
15390 | { | |
15391 | /* It's an object-like macro. */ | |
15392 | int name_len = p - body; | |
15393 | char *name = copy_string (body, name_len); | |
15394 | const char *replacement; | |
15395 | ||
15396 | if (*p == ' ') | |
15397 | replacement = body + name_len + 1; | |
15398 | else | |
15399 | { | |
4d3c2250 | 15400 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
15401 | replacement = body + name_len; |
15402 | } | |
6e70227d | 15403 | |
2e276125 JB |
15404 | macro_define_object (file, line, name, replacement); |
15405 | ||
15406 | xfree (name); | |
15407 | } | |
15408 | else if (*p == '(') | |
15409 | { | |
15410 | /* It's a function-like macro. */ | |
15411 | char *name = copy_string (body, p - body); | |
15412 | int argc = 0; | |
15413 | int argv_size = 1; | |
15414 | char **argv = xmalloc (argv_size * sizeof (*argv)); | |
15415 | ||
15416 | p++; | |
15417 | ||
15418 | p = consume_improper_spaces (p, body); | |
15419 | ||
15420 | /* Parse the formal argument list. */ | |
15421 | while (*p && *p != ')') | |
15422 | { | |
15423 | /* Find the extent of the current argument name. */ | |
15424 | const char *arg_start = p; | |
15425 | ||
15426 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
15427 | p++; | |
15428 | ||
15429 | if (! *p || p == arg_start) | |
4d3c2250 | 15430 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
15431 | else |
15432 | { | |
15433 | /* Make sure argv has room for the new argument. */ | |
15434 | if (argc >= argv_size) | |
15435 | { | |
15436 | argv_size *= 2; | |
15437 | argv = xrealloc (argv, argv_size * sizeof (*argv)); | |
15438 | } | |
15439 | ||
15440 | argv[argc++] = copy_string (arg_start, p - arg_start); | |
15441 | } | |
15442 | ||
15443 | p = consume_improper_spaces (p, body); | |
15444 | ||
15445 | /* Consume the comma, if present. */ | |
15446 | if (*p == ',') | |
15447 | { | |
15448 | p++; | |
15449 | ||
15450 | p = consume_improper_spaces (p, body); | |
15451 | } | |
15452 | } | |
15453 | ||
15454 | if (*p == ')') | |
15455 | { | |
15456 | p++; | |
15457 | ||
15458 | if (*p == ' ') | |
15459 | /* Perfectly formed definition, no complaints. */ | |
15460 | macro_define_function (file, line, name, | |
6e70227d | 15461 | argc, (const char **) argv, |
2e276125 JB |
15462 | p + 1); |
15463 | else if (*p == '\0') | |
15464 | { | |
15465 | /* Complain, but do define it. */ | |
4d3c2250 | 15466 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 | 15467 | macro_define_function (file, line, name, |
6e70227d | 15468 | argc, (const char **) argv, |
2e276125 JB |
15469 | p); |
15470 | } | |
15471 | else | |
15472 | /* Just complain. */ | |
4d3c2250 | 15473 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
15474 | } |
15475 | else | |
15476 | /* Just complain. */ | |
4d3c2250 | 15477 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
15478 | |
15479 | xfree (name); | |
15480 | { | |
15481 | int i; | |
15482 | ||
15483 | for (i = 0; i < argc; i++) | |
15484 | xfree (argv[i]); | |
15485 | } | |
15486 | xfree (argv); | |
15487 | } | |
15488 | else | |
4d3c2250 | 15489 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
15490 | } |
15491 | ||
cf2c3c16 TT |
15492 | /* Skip some bytes from BYTES according to the form given in FORM. |
15493 | Returns the new pointer. */ | |
2e276125 | 15494 | |
cf2c3c16 TT |
15495 | static gdb_byte * |
15496 | skip_form_bytes (bfd *abfd, gdb_byte *bytes, | |
15497 | enum dwarf_form form, | |
15498 | unsigned int offset_size, | |
15499 | struct dwarf2_section_info *section) | |
2e276125 | 15500 | { |
cf2c3c16 | 15501 | unsigned int bytes_read; |
2e276125 | 15502 | |
cf2c3c16 | 15503 | switch (form) |
2e276125 | 15504 | { |
cf2c3c16 TT |
15505 | case DW_FORM_data1: |
15506 | case DW_FORM_flag: | |
15507 | ++bytes; | |
15508 | break; | |
15509 | ||
15510 | case DW_FORM_data2: | |
15511 | bytes += 2; | |
15512 | break; | |
15513 | ||
15514 | case DW_FORM_data4: | |
15515 | bytes += 4; | |
15516 | break; | |
15517 | ||
15518 | case DW_FORM_data8: | |
15519 | bytes += 8; | |
15520 | break; | |
15521 | ||
15522 | case DW_FORM_string: | |
15523 | read_direct_string (abfd, bytes, &bytes_read); | |
15524 | bytes += bytes_read; | |
15525 | break; | |
15526 | ||
15527 | case DW_FORM_sec_offset: | |
15528 | case DW_FORM_strp: | |
15529 | bytes += offset_size; | |
15530 | break; | |
15531 | ||
15532 | case DW_FORM_block: | |
15533 | bytes += read_unsigned_leb128 (abfd, bytes, &bytes_read); | |
15534 | bytes += bytes_read; | |
15535 | break; | |
15536 | ||
15537 | case DW_FORM_block1: | |
15538 | bytes += 1 + read_1_byte (abfd, bytes); | |
15539 | break; | |
15540 | case DW_FORM_block2: | |
15541 | bytes += 2 + read_2_bytes (abfd, bytes); | |
15542 | break; | |
15543 | case DW_FORM_block4: | |
15544 | bytes += 4 + read_4_bytes (abfd, bytes); | |
15545 | break; | |
15546 | ||
15547 | case DW_FORM_sdata: | |
15548 | case DW_FORM_udata: | |
3019eac3 DE |
15549 | case DW_FORM_GNU_addr_index: |
15550 | case DW_FORM_GNU_str_index: | |
cf2c3c16 TT |
15551 | bytes = skip_leb128 (abfd, bytes); |
15552 | break; | |
15553 | ||
15554 | default: | |
15555 | { | |
15556 | complain: | |
15557 | complaint (&symfile_complaints, | |
15558 | _("invalid form 0x%x in `%s'"), | |
15559 | form, | |
15560 | section->asection->name); | |
15561 | return NULL; | |
15562 | } | |
2e276125 JB |
15563 | } |
15564 | ||
cf2c3c16 TT |
15565 | return bytes; |
15566 | } | |
757a13d0 | 15567 | |
cf2c3c16 TT |
15568 | /* A helper for dwarf_decode_macros that handles skipping an unknown |
15569 | opcode. Returns an updated pointer to the macro data buffer; or, | |
15570 | on error, issues a complaint and returns NULL. */ | |
757a13d0 | 15571 | |
cf2c3c16 TT |
15572 | static gdb_byte * |
15573 | skip_unknown_opcode (unsigned int opcode, | |
15574 | gdb_byte **opcode_definitions, | |
15575 | gdb_byte *mac_ptr, | |
15576 | bfd *abfd, | |
15577 | unsigned int offset_size, | |
15578 | struct dwarf2_section_info *section) | |
15579 | { | |
15580 | unsigned int bytes_read, i; | |
15581 | unsigned long arg; | |
15582 | gdb_byte *defn; | |
2e276125 | 15583 | |
cf2c3c16 | 15584 | if (opcode_definitions[opcode] == NULL) |
2e276125 | 15585 | { |
cf2c3c16 TT |
15586 | complaint (&symfile_complaints, |
15587 | _("unrecognized DW_MACFINO opcode 0x%x"), | |
15588 | opcode); | |
15589 | return NULL; | |
15590 | } | |
2e276125 | 15591 | |
cf2c3c16 TT |
15592 | defn = opcode_definitions[opcode]; |
15593 | arg = read_unsigned_leb128 (abfd, defn, &bytes_read); | |
15594 | defn += bytes_read; | |
2e276125 | 15595 | |
cf2c3c16 TT |
15596 | for (i = 0; i < arg; ++i) |
15597 | { | |
15598 | mac_ptr = skip_form_bytes (abfd, mac_ptr, defn[i], offset_size, section); | |
15599 | if (mac_ptr == NULL) | |
15600 | { | |
15601 | /* skip_form_bytes already issued the complaint. */ | |
15602 | return NULL; | |
15603 | } | |
15604 | } | |
757a13d0 | 15605 | |
cf2c3c16 TT |
15606 | return mac_ptr; |
15607 | } | |
757a13d0 | 15608 | |
cf2c3c16 TT |
15609 | /* A helper function which parses the header of a macro section. |
15610 | If the macro section is the extended (for now called "GNU") type, | |
15611 | then this updates *OFFSET_SIZE. Returns a pointer to just after | |
15612 | the header, or issues a complaint and returns NULL on error. */ | |
757a13d0 | 15613 | |
cf2c3c16 TT |
15614 | static gdb_byte * |
15615 | dwarf_parse_macro_header (gdb_byte **opcode_definitions, | |
15616 | bfd *abfd, | |
15617 | gdb_byte *mac_ptr, | |
15618 | unsigned int *offset_size, | |
15619 | int section_is_gnu) | |
15620 | { | |
15621 | memset (opcode_definitions, 0, 256 * sizeof (gdb_byte *)); | |
757a13d0 | 15622 | |
cf2c3c16 TT |
15623 | if (section_is_gnu) |
15624 | { | |
15625 | unsigned int version, flags; | |
757a13d0 | 15626 | |
cf2c3c16 TT |
15627 | version = read_2_bytes (abfd, mac_ptr); |
15628 | if (version != 4) | |
15629 | { | |
15630 | complaint (&symfile_complaints, | |
15631 | _("unrecognized version `%d' in .debug_macro section"), | |
15632 | version); | |
15633 | return NULL; | |
15634 | } | |
15635 | mac_ptr += 2; | |
757a13d0 | 15636 | |
cf2c3c16 TT |
15637 | flags = read_1_byte (abfd, mac_ptr); |
15638 | ++mac_ptr; | |
15639 | *offset_size = (flags & 1) ? 8 : 4; | |
757a13d0 | 15640 | |
cf2c3c16 TT |
15641 | if ((flags & 2) != 0) |
15642 | /* We don't need the line table offset. */ | |
15643 | mac_ptr += *offset_size; | |
757a13d0 | 15644 | |
cf2c3c16 TT |
15645 | /* Vendor opcode descriptions. */ |
15646 | if ((flags & 4) != 0) | |
15647 | { | |
15648 | unsigned int i, count; | |
757a13d0 | 15649 | |
cf2c3c16 TT |
15650 | count = read_1_byte (abfd, mac_ptr); |
15651 | ++mac_ptr; | |
15652 | for (i = 0; i < count; ++i) | |
15653 | { | |
15654 | unsigned int opcode, bytes_read; | |
15655 | unsigned long arg; | |
15656 | ||
15657 | opcode = read_1_byte (abfd, mac_ptr); | |
15658 | ++mac_ptr; | |
15659 | opcode_definitions[opcode] = mac_ptr; | |
15660 | arg = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
15661 | mac_ptr += bytes_read; | |
15662 | mac_ptr += arg; | |
15663 | } | |
757a13d0 | 15664 | } |
cf2c3c16 | 15665 | } |
757a13d0 | 15666 | |
cf2c3c16 TT |
15667 | return mac_ptr; |
15668 | } | |
757a13d0 | 15669 | |
cf2c3c16 | 15670 | /* A helper for dwarf_decode_macros that handles the GNU extensions, |
8fc3fc34 | 15671 | including DW_MACRO_GNU_transparent_include. */ |
cf2c3c16 TT |
15672 | |
15673 | static void | |
15674 | dwarf_decode_macro_bytes (bfd *abfd, gdb_byte *mac_ptr, gdb_byte *mac_end, | |
15675 | struct macro_source_file *current_file, | |
15676 | struct line_header *lh, char *comp_dir, | |
15677 | struct dwarf2_section_info *section, | |
15678 | int section_is_gnu, | |
15679 | unsigned int offset_size, | |
8fc3fc34 TT |
15680 | struct objfile *objfile, |
15681 | htab_t include_hash) | |
cf2c3c16 TT |
15682 | { |
15683 | enum dwarf_macro_record_type macinfo_type; | |
15684 | int at_commandline; | |
15685 | gdb_byte *opcode_definitions[256]; | |
757a13d0 | 15686 | |
cf2c3c16 TT |
15687 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, |
15688 | &offset_size, section_is_gnu); | |
15689 | if (mac_ptr == NULL) | |
15690 | { | |
15691 | /* We already issued a complaint. */ | |
15692 | return; | |
15693 | } | |
757a13d0 JK |
15694 | |
15695 | /* Determines if GDB is still before first DW_MACINFO_start_file. If true | |
15696 | GDB is still reading the definitions from command line. First | |
15697 | DW_MACINFO_start_file will need to be ignored as it was already executed | |
15698 | to create CURRENT_FILE for the main source holding also the command line | |
15699 | definitions. On first met DW_MACINFO_start_file this flag is reset to | |
15700 | normally execute all the remaining DW_MACINFO_start_file macinfos. */ | |
15701 | ||
15702 | at_commandline = 1; | |
15703 | ||
15704 | do | |
15705 | { | |
15706 | /* Do we at least have room for a macinfo type byte? */ | |
15707 | if (mac_ptr >= mac_end) | |
15708 | { | |
cf2c3c16 | 15709 | dwarf2_macros_too_long_complaint (section); |
757a13d0 JK |
15710 | break; |
15711 | } | |
15712 | ||
15713 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
15714 | mac_ptr++; | |
15715 | ||
cf2c3c16 TT |
15716 | /* Note that we rely on the fact that the corresponding GNU and |
15717 | DWARF constants are the same. */ | |
757a13d0 JK |
15718 | switch (macinfo_type) |
15719 | { | |
15720 | /* A zero macinfo type indicates the end of the macro | |
15721 | information. */ | |
15722 | case 0: | |
15723 | break; | |
2e276125 | 15724 | |
cf2c3c16 TT |
15725 | case DW_MACRO_GNU_define: |
15726 | case DW_MACRO_GNU_undef: | |
15727 | case DW_MACRO_GNU_define_indirect: | |
15728 | case DW_MACRO_GNU_undef_indirect: | |
2e276125 | 15729 | { |
891d2f0b | 15730 | unsigned int bytes_read; |
2e276125 JB |
15731 | int line; |
15732 | char *body; | |
cf2c3c16 | 15733 | int is_define; |
2e276125 | 15734 | |
cf2c3c16 TT |
15735 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
15736 | mac_ptr += bytes_read; | |
15737 | ||
15738 | if (macinfo_type == DW_MACRO_GNU_define | |
15739 | || macinfo_type == DW_MACRO_GNU_undef) | |
15740 | { | |
15741 | body = read_direct_string (abfd, mac_ptr, &bytes_read); | |
15742 | mac_ptr += bytes_read; | |
15743 | } | |
15744 | else | |
15745 | { | |
15746 | LONGEST str_offset; | |
15747 | ||
15748 | str_offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
15749 | mac_ptr += offset_size; | |
2e276125 | 15750 | |
cf2c3c16 TT |
15751 | body = read_indirect_string_at_offset (abfd, str_offset); |
15752 | } | |
15753 | ||
15754 | is_define = (macinfo_type == DW_MACRO_GNU_define | |
15755 | || macinfo_type == DW_MACRO_GNU_define_indirect); | |
2e276125 | 15756 | if (! current_file) |
757a13d0 JK |
15757 | { |
15758 | /* DWARF violation as no main source is present. */ | |
15759 | complaint (&symfile_complaints, | |
15760 | _("debug info with no main source gives macro %s " | |
15761 | "on line %d: %s"), | |
cf2c3c16 TT |
15762 | is_define ? _("definition") : _("undefinition"), |
15763 | line, body); | |
757a13d0 JK |
15764 | break; |
15765 | } | |
3e43a32a MS |
15766 | if ((line == 0 && !at_commandline) |
15767 | || (line != 0 && at_commandline)) | |
4d3c2250 | 15768 | complaint (&symfile_complaints, |
757a13d0 JK |
15769 | _("debug info gives %s macro %s with %s line %d: %s"), |
15770 | at_commandline ? _("command-line") : _("in-file"), | |
cf2c3c16 | 15771 | is_define ? _("definition") : _("undefinition"), |
757a13d0 JK |
15772 | line == 0 ? _("zero") : _("non-zero"), line, body); |
15773 | ||
cf2c3c16 | 15774 | if (is_define) |
757a13d0 | 15775 | parse_macro_definition (current_file, line, body); |
cf2c3c16 TT |
15776 | else |
15777 | { | |
15778 | gdb_assert (macinfo_type == DW_MACRO_GNU_undef | |
15779 | || macinfo_type == DW_MACRO_GNU_undef_indirect); | |
15780 | macro_undef (current_file, line, body); | |
15781 | } | |
2e276125 JB |
15782 | } |
15783 | break; | |
15784 | ||
cf2c3c16 | 15785 | case DW_MACRO_GNU_start_file: |
2e276125 | 15786 | { |
891d2f0b | 15787 | unsigned int bytes_read; |
2e276125 JB |
15788 | int line, file; |
15789 | ||
15790 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
15791 | mac_ptr += bytes_read; | |
15792 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
15793 | mac_ptr += bytes_read; | |
15794 | ||
3e43a32a MS |
15795 | if ((line == 0 && !at_commandline) |
15796 | || (line != 0 && at_commandline)) | |
757a13d0 JK |
15797 | complaint (&symfile_complaints, |
15798 | _("debug info gives source %d included " | |
15799 | "from %s at %s line %d"), | |
15800 | file, at_commandline ? _("command-line") : _("file"), | |
15801 | line == 0 ? _("zero") : _("non-zero"), line); | |
15802 | ||
15803 | if (at_commandline) | |
15804 | { | |
cf2c3c16 TT |
15805 | /* This DW_MACRO_GNU_start_file was executed in the |
15806 | pass one. */ | |
757a13d0 JK |
15807 | at_commandline = 0; |
15808 | } | |
15809 | else | |
15810 | current_file = macro_start_file (file, line, | |
15811 | current_file, comp_dir, | |
cf2c3c16 | 15812 | lh, objfile); |
2e276125 JB |
15813 | } |
15814 | break; | |
15815 | ||
cf2c3c16 | 15816 | case DW_MACRO_GNU_end_file: |
2e276125 | 15817 | if (! current_file) |
4d3c2250 | 15818 | complaint (&symfile_complaints, |
3e43a32a MS |
15819 | _("macro debug info has an unmatched " |
15820 | "`close_file' directive")); | |
2e276125 JB |
15821 | else |
15822 | { | |
15823 | current_file = current_file->included_by; | |
15824 | if (! current_file) | |
15825 | { | |
cf2c3c16 | 15826 | enum dwarf_macro_record_type next_type; |
2e276125 JB |
15827 | |
15828 | /* GCC circa March 2002 doesn't produce the zero | |
15829 | type byte marking the end of the compilation | |
15830 | unit. Complain if it's not there, but exit no | |
15831 | matter what. */ | |
15832 | ||
15833 | /* Do we at least have room for a macinfo type byte? */ | |
15834 | if (mac_ptr >= mac_end) | |
15835 | { | |
cf2c3c16 | 15836 | dwarf2_macros_too_long_complaint (section); |
2e276125 JB |
15837 | return; |
15838 | } | |
15839 | ||
15840 | /* We don't increment mac_ptr here, so this is just | |
15841 | a look-ahead. */ | |
15842 | next_type = read_1_byte (abfd, mac_ptr); | |
15843 | if (next_type != 0) | |
4d3c2250 | 15844 | complaint (&symfile_complaints, |
3e43a32a MS |
15845 | _("no terminating 0-type entry for " |
15846 | "macros in `.debug_macinfo' section")); | |
2e276125 JB |
15847 | |
15848 | return; | |
15849 | } | |
15850 | } | |
15851 | break; | |
15852 | ||
cf2c3c16 TT |
15853 | case DW_MACRO_GNU_transparent_include: |
15854 | { | |
15855 | LONGEST offset; | |
8fc3fc34 | 15856 | void **slot; |
cf2c3c16 TT |
15857 | |
15858 | offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
15859 | mac_ptr += offset_size; | |
15860 | ||
8fc3fc34 TT |
15861 | slot = htab_find_slot (include_hash, mac_ptr, INSERT); |
15862 | if (*slot != NULL) | |
15863 | { | |
15864 | /* This has actually happened; see | |
15865 | http://sourceware.org/bugzilla/show_bug.cgi?id=13568. */ | |
15866 | complaint (&symfile_complaints, | |
15867 | _("recursive DW_MACRO_GNU_transparent_include in " | |
15868 | ".debug_macro section")); | |
15869 | } | |
15870 | else | |
15871 | { | |
15872 | *slot = mac_ptr; | |
15873 | ||
15874 | dwarf_decode_macro_bytes (abfd, | |
15875 | section->buffer + offset, | |
15876 | mac_end, current_file, | |
15877 | lh, comp_dir, | |
15878 | section, section_is_gnu, | |
15879 | offset_size, objfile, include_hash); | |
15880 | ||
15881 | htab_remove_elt (include_hash, mac_ptr); | |
15882 | } | |
cf2c3c16 TT |
15883 | } |
15884 | break; | |
15885 | ||
2e276125 | 15886 | case DW_MACINFO_vendor_ext: |
cf2c3c16 TT |
15887 | if (!section_is_gnu) |
15888 | { | |
15889 | unsigned int bytes_read; | |
15890 | int constant; | |
2e276125 | 15891 | |
cf2c3c16 TT |
15892 | constant = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
15893 | mac_ptr += bytes_read; | |
15894 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
15895 | mac_ptr += bytes_read; | |
2e276125 | 15896 | |
cf2c3c16 TT |
15897 | /* We don't recognize any vendor extensions. */ |
15898 | break; | |
15899 | } | |
15900 | /* FALLTHROUGH */ | |
15901 | ||
15902 | default: | |
15903 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
15904 | mac_ptr, abfd, offset_size, | |
15905 | section); | |
15906 | if (mac_ptr == NULL) | |
15907 | return; | |
15908 | break; | |
2e276125 | 15909 | } |
757a13d0 | 15910 | } while (macinfo_type != 0); |
2e276125 | 15911 | } |
8e19ed76 | 15912 | |
cf2c3c16 TT |
15913 | static void |
15914 | dwarf_decode_macros (struct line_header *lh, unsigned int offset, | |
15915 | char *comp_dir, bfd *abfd, | |
15916 | struct dwarf2_cu *cu, | |
15917 | struct dwarf2_section_info *section, | |
fceca515 | 15918 | int section_is_gnu, const char *section_name) |
cf2c3c16 | 15919 | { |
bb5ed363 | 15920 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
cf2c3c16 TT |
15921 | gdb_byte *mac_ptr, *mac_end; |
15922 | struct macro_source_file *current_file = 0; | |
15923 | enum dwarf_macro_record_type macinfo_type; | |
15924 | unsigned int offset_size = cu->header.offset_size; | |
15925 | gdb_byte *opcode_definitions[256]; | |
8fc3fc34 TT |
15926 | struct cleanup *cleanup; |
15927 | htab_t include_hash; | |
15928 | void **slot; | |
cf2c3c16 | 15929 | |
bb5ed363 | 15930 | dwarf2_read_section (objfile, section); |
cf2c3c16 TT |
15931 | if (section->buffer == NULL) |
15932 | { | |
fceca515 | 15933 | complaint (&symfile_complaints, _("missing %s section"), section_name); |
cf2c3c16 TT |
15934 | return; |
15935 | } | |
15936 | ||
15937 | /* First pass: Find the name of the base filename. | |
15938 | This filename is needed in order to process all macros whose definition | |
15939 | (or undefinition) comes from the command line. These macros are defined | |
15940 | before the first DW_MACINFO_start_file entry, and yet still need to be | |
15941 | associated to the base file. | |
15942 | ||
15943 | To determine the base file name, we scan the macro definitions until we | |
15944 | reach the first DW_MACINFO_start_file entry. We then initialize | |
15945 | CURRENT_FILE accordingly so that any macro definition found before the | |
15946 | first DW_MACINFO_start_file can still be associated to the base file. */ | |
15947 | ||
15948 | mac_ptr = section->buffer + offset; | |
15949 | mac_end = section->buffer + section->size; | |
15950 | ||
15951 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, | |
15952 | &offset_size, section_is_gnu); | |
15953 | if (mac_ptr == NULL) | |
15954 | { | |
15955 | /* We already issued a complaint. */ | |
15956 | return; | |
15957 | } | |
15958 | ||
15959 | do | |
15960 | { | |
15961 | /* Do we at least have room for a macinfo type byte? */ | |
15962 | if (mac_ptr >= mac_end) | |
15963 | { | |
15964 | /* Complaint is printed during the second pass as GDB will probably | |
15965 | stop the first pass earlier upon finding | |
15966 | DW_MACINFO_start_file. */ | |
15967 | break; | |
15968 | } | |
15969 | ||
15970 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
15971 | mac_ptr++; | |
15972 | ||
15973 | /* Note that we rely on the fact that the corresponding GNU and | |
15974 | DWARF constants are the same. */ | |
15975 | switch (macinfo_type) | |
15976 | { | |
15977 | /* A zero macinfo type indicates the end of the macro | |
15978 | information. */ | |
15979 | case 0: | |
15980 | break; | |
15981 | ||
15982 | case DW_MACRO_GNU_define: | |
15983 | case DW_MACRO_GNU_undef: | |
15984 | /* Only skip the data by MAC_PTR. */ | |
15985 | { | |
15986 | unsigned int bytes_read; | |
15987 | ||
15988 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
15989 | mac_ptr += bytes_read; | |
15990 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
15991 | mac_ptr += bytes_read; | |
15992 | } | |
15993 | break; | |
15994 | ||
15995 | case DW_MACRO_GNU_start_file: | |
15996 | { | |
15997 | unsigned int bytes_read; | |
15998 | int line, file; | |
15999 | ||
16000 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
16001 | mac_ptr += bytes_read; | |
16002 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
16003 | mac_ptr += bytes_read; | |
16004 | ||
16005 | current_file = macro_start_file (file, line, current_file, | |
bb5ed363 | 16006 | comp_dir, lh, objfile); |
cf2c3c16 TT |
16007 | } |
16008 | break; | |
16009 | ||
16010 | case DW_MACRO_GNU_end_file: | |
16011 | /* No data to skip by MAC_PTR. */ | |
16012 | break; | |
16013 | ||
16014 | case DW_MACRO_GNU_define_indirect: | |
16015 | case DW_MACRO_GNU_undef_indirect: | |
16016 | { | |
16017 | unsigned int bytes_read; | |
16018 | ||
16019 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
16020 | mac_ptr += bytes_read; | |
16021 | mac_ptr += offset_size; | |
16022 | } | |
16023 | break; | |
16024 | ||
16025 | case DW_MACRO_GNU_transparent_include: | |
16026 | /* Note that, according to the spec, a transparent include | |
16027 | chain cannot call DW_MACRO_GNU_start_file. So, we can just | |
16028 | skip this opcode. */ | |
16029 | mac_ptr += offset_size; | |
16030 | break; | |
16031 | ||
16032 | case DW_MACINFO_vendor_ext: | |
16033 | /* Only skip the data by MAC_PTR. */ | |
16034 | if (!section_is_gnu) | |
16035 | { | |
16036 | unsigned int bytes_read; | |
16037 | ||
16038 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
16039 | mac_ptr += bytes_read; | |
16040 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
16041 | mac_ptr += bytes_read; | |
16042 | } | |
16043 | /* FALLTHROUGH */ | |
16044 | ||
16045 | default: | |
16046 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
16047 | mac_ptr, abfd, offset_size, | |
16048 | section); | |
16049 | if (mac_ptr == NULL) | |
16050 | return; | |
16051 | break; | |
16052 | } | |
16053 | } while (macinfo_type != 0 && current_file == NULL); | |
16054 | ||
16055 | /* Second pass: Process all entries. | |
16056 | ||
16057 | Use the AT_COMMAND_LINE flag to determine whether we are still processing | |
16058 | command-line macro definitions/undefinitions. This flag is unset when we | |
16059 | reach the first DW_MACINFO_start_file entry. */ | |
16060 | ||
8fc3fc34 TT |
16061 | include_hash = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
16062 | NULL, xcalloc, xfree); | |
16063 | cleanup = make_cleanup_htab_delete (include_hash); | |
16064 | mac_ptr = section->buffer + offset; | |
16065 | slot = htab_find_slot (include_hash, mac_ptr, INSERT); | |
16066 | *slot = mac_ptr; | |
16067 | dwarf_decode_macro_bytes (abfd, mac_ptr, mac_end, | |
cf2c3c16 | 16068 | current_file, lh, comp_dir, section, section_is_gnu, |
8fc3fc34 TT |
16069 | offset_size, objfile, include_hash); |
16070 | do_cleanups (cleanup); | |
cf2c3c16 TT |
16071 | } |
16072 | ||
8e19ed76 | 16073 | /* Check if the attribute's form is a DW_FORM_block* |
0963b4bd | 16074 | if so return true else false. */ |
380bca97 | 16075 | |
8e19ed76 PS |
16076 | static int |
16077 | attr_form_is_block (struct attribute *attr) | |
16078 | { | |
16079 | return (attr == NULL ? 0 : | |
16080 | attr->form == DW_FORM_block1 | |
16081 | || attr->form == DW_FORM_block2 | |
16082 | || attr->form == DW_FORM_block4 | |
2dc7f7b3 TT |
16083 | || attr->form == DW_FORM_block |
16084 | || attr->form == DW_FORM_exprloc); | |
8e19ed76 | 16085 | } |
4c2df51b | 16086 | |
c6a0999f JB |
16087 | /* Return non-zero if ATTR's value is a section offset --- classes |
16088 | lineptr, loclistptr, macptr or rangelistptr --- or zero, otherwise. | |
16089 | You may use DW_UNSND (attr) to retrieve such offsets. | |
16090 | ||
16091 | Section 7.5.4, "Attribute Encodings", explains that no attribute | |
16092 | may have a value that belongs to more than one of these classes; it | |
16093 | would be ambiguous if we did, because we use the same forms for all | |
16094 | of them. */ | |
380bca97 | 16095 | |
3690dd37 JB |
16096 | static int |
16097 | attr_form_is_section_offset (struct attribute *attr) | |
16098 | { | |
16099 | return (attr->form == DW_FORM_data4 | |
2dc7f7b3 TT |
16100 | || attr->form == DW_FORM_data8 |
16101 | || attr->form == DW_FORM_sec_offset); | |
3690dd37 JB |
16102 | } |
16103 | ||
3690dd37 JB |
16104 | /* Return non-zero if ATTR's value falls in the 'constant' class, or |
16105 | zero otherwise. When this function returns true, you can apply | |
16106 | dwarf2_get_attr_constant_value to it. | |
16107 | ||
16108 | However, note that for some attributes you must check | |
16109 | attr_form_is_section_offset before using this test. DW_FORM_data4 | |
16110 | and DW_FORM_data8 are members of both the constant class, and of | |
16111 | the classes that contain offsets into other debug sections | |
16112 | (lineptr, loclistptr, macptr or rangelistptr). The DWARF spec says | |
16113 | that, if an attribute's can be either a constant or one of the | |
16114 | section offset classes, DW_FORM_data4 and DW_FORM_data8 should be | |
16115 | taken as section offsets, not constants. */ | |
380bca97 | 16116 | |
3690dd37 JB |
16117 | static int |
16118 | attr_form_is_constant (struct attribute *attr) | |
16119 | { | |
16120 | switch (attr->form) | |
16121 | { | |
16122 | case DW_FORM_sdata: | |
16123 | case DW_FORM_udata: | |
16124 | case DW_FORM_data1: | |
16125 | case DW_FORM_data2: | |
16126 | case DW_FORM_data4: | |
16127 | case DW_FORM_data8: | |
16128 | return 1; | |
16129 | default: | |
16130 | return 0; | |
16131 | } | |
16132 | } | |
16133 | ||
3019eac3 DE |
16134 | /* Return the .debug_loc section to use for CU. |
16135 | For DWO files use .debug_loc.dwo. */ | |
16136 | ||
16137 | static struct dwarf2_section_info * | |
16138 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
16139 | { | |
16140 | if (cu->dwo_unit) | |
16141 | return &cu->dwo_unit->dwo_file->sections.loc; | |
16142 | return &dwarf2_per_objfile->loc; | |
16143 | } | |
16144 | ||
8cf6f0b1 TT |
16145 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
16146 | ||
16147 | static void | |
16148 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
16149 | struct dwarf2_loclist_baton *baton, | |
16150 | struct attribute *attr) | |
16151 | { | |
3019eac3 DE |
16152 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
16153 | ||
16154 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
8cf6f0b1 TT |
16155 | |
16156 | baton->per_cu = cu->per_cu; | |
16157 | gdb_assert (baton->per_cu); | |
16158 | /* We don't know how long the location list is, but make sure we | |
16159 | don't run off the edge of the section. */ | |
3019eac3 DE |
16160 | baton->size = section->size - DW_UNSND (attr); |
16161 | baton->data = section->buffer + DW_UNSND (attr); | |
8cf6f0b1 TT |
16162 | baton->base_address = cu->base_address; |
16163 | } | |
16164 | ||
4c2df51b DJ |
16165 | static void |
16166 | dwarf2_symbol_mark_computed (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 16167 | struct dwarf2_cu *cu) |
4c2df51b | 16168 | { |
bb5ed363 | 16169 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 | 16170 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 16171 | |
3690dd37 | 16172 | if (attr_form_is_section_offset (attr) |
3019eac3 | 16173 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
16174 | the section. If so, fall through to the complaint in the |
16175 | other branch. */ | |
3019eac3 | 16176 | && DW_UNSND (attr) < dwarf2_section_size (objfile, section)) |
4c2df51b | 16177 | { |
0d53c4c4 | 16178 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 16179 | |
bb5ed363 | 16180 | baton = obstack_alloc (&objfile->objfile_obstack, |
0d53c4c4 | 16181 | sizeof (struct dwarf2_loclist_baton)); |
4c2df51b | 16182 | |
8cf6f0b1 | 16183 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 16184 | |
d00adf39 | 16185 | if (cu->base_known == 0) |
0d53c4c4 | 16186 | complaint (&symfile_complaints, |
3e43a32a MS |
16187 | _("Location list used without " |
16188 | "specifying the CU base address.")); | |
4c2df51b | 16189 | |
768a979c | 16190 | SYMBOL_COMPUTED_OPS (sym) = &dwarf2_loclist_funcs; |
0d53c4c4 DJ |
16191 | SYMBOL_LOCATION_BATON (sym) = baton; |
16192 | } | |
16193 | else | |
16194 | { | |
16195 | struct dwarf2_locexpr_baton *baton; | |
16196 | ||
bb5ed363 | 16197 | baton = obstack_alloc (&objfile->objfile_obstack, |
0d53c4c4 | 16198 | sizeof (struct dwarf2_locexpr_baton)); |
ae0d2f24 UW |
16199 | baton->per_cu = cu->per_cu; |
16200 | gdb_assert (baton->per_cu); | |
0d53c4c4 DJ |
16201 | |
16202 | if (attr_form_is_block (attr)) | |
16203 | { | |
16204 | /* Note that we're just copying the block's data pointer | |
16205 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
16206 | info_buffer for SYM's objfile; right now we never release |
16207 | that buffer, but when we do clean up properly this may | |
16208 | need to change. */ | |
0d53c4c4 DJ |
16209 | baton->size = DW_BLOCK (attr)->size; |
16210 | baton->data = DW_BLOCK (attr)->data; | |
16211 | } | |
16212 | else | |
16213 | { | |
16214 | dwarf2_invalid_attrib_class_complaint ("location description", | |
16215 | SYMBOL_NATURAL_NAME (sym)); | |
16216 | baton->size = 0; | |
0d53c4c4 | 16217 | } |
6e70227d | 16218 | |
768a979c | 16219 | SYMBOL_COMPUTED_OPS (sym) = &dwarf2_locexpr_funcs; |
0d53c4c4 DJ |
16220 | SYMBOL_LOCATION_BATON (sym) = baton; |
16221 | } | |
4c2df51b | 16222 | } |
6502dd73 | 16223 | |
9aa1f1e3 TT |
16224 | /* Return the OBJFILE associated with the compilation unit CU. If CU |
16225 | came from a separate debuginfo file, then the master objfile is | |
16226 | returned. */ | |
ae0d2f24 UW |
16227 | |
16228 | struct objfile * | |
16229 | dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *per_cu) | |
16230 | { | |
9291a0cd | 16231 | struct objfile *objfile = per_cu->objfile; |
ae0d2f24 UW |
16232 | |
16233 | /* Return the master objfile, so that we can report and look up the | |
16234 | correct file containing this variable. */ | |
16235 | if (objfile->separate_debug_objfile_backlink) | |
16236 | objfile = objfile->separate_debug_objfile_backlink; | |
16237 | ||
16238 | return objfile; | |
16239 | } | |
16240 | ||
96408a79 SA |
16241 | /* Return comp_unit_head for PER_CU, either already available in PER_CU->CU |
16242 | (CU_HEADERP is unused in such case) or prepare a temporary copy at | |
16243 | CU_HEADERP first. */ | |
16244 | ||
16245 | static const struct comp_unit_head * | |
16246 | per_cu_header_read_in (struct comp_unit_head *cu_headerp, | |
16247 | struct dwarf2_per_cu_data *per_cu) | |
16248 | { | |
16249 | struct objfile *objfile; | |
16250 | struct dwarf2_per_objfile *per_objfile; | |
16251 | gdb_byte *info_ptr; | |
16252 | ||
16253 | if (per_cu->cu) | |
16254 | return &per_cu->cu->header; | |
16255 | ||
16256 | objfile = per_cu->objfile; | |
16257 | per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
b64f50a1 | 16258 | info_ptr = per_objfile->info.buffer + per_cu->offset.sect_off; |
96408a79 SA |
16259 | |
16260 | memset (cu_headerp, 0, sizeof (*cu_headerp)); | |
16261 | read_comp_unit_head (cu_headerp, info_ptr, objfile->obfd); | |
16262 | ||
16263 | return cu_headerp; | |
16264 | } | |
16265 | ||
ae0d2f24 UW |
16266 | /* Return the address size given in the compilation unit header for CU. */ |
16267 | ||
98714339 | 16268 | int |
ae0d2f24 UW |
16269 | dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *per_cu) |
16270 | { | |
96408a79 SA |
16271 | struct comp_unit_head cu_header_local; |
16272 | const struct comp_unit_head *cu_headerp; | |
c471e790 | 16273 | |
96408a79 SA |
16274 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
16275 | ||
16276 | return cu_headerp->addr_size; | |
ae0d2f24 UW |
16277 | } |
16278 | ||
9eae7c52 TT |
16279 | /* Return the offset size given in the compilation unit header for CU. */ |
16280 | ||
16281 | int | |
16282 | dwarf2_per_cu_offset_size (struct dwarf2_per_cu_data *per_cu) | |
16283 | { | |
96408a79 SA |
16284 | struct comp_unit_head cu_header_local; |
16285 | const struct comp_unit_head *cu_headerp; | |
9c6c53f7 | 16286 | |
96408a79 SA |
16287 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
16288 | ||
16289 | return cu_headerp->offset_size; | |
16290 | } | |
16291 | ||
16292 | /* See its dwarf2loc.h declaration. */ | |
16293 | ||
16294 | int | |
16295 | dwarf2_per_cu_ref_addr_size (struct dwarf2_per_cu_data *per_cu) | |
16296 | { | |
16297 | struct comp_unit_head cu_header_local; | |
16298 | const struct comp_unit_head *cu_headerp; | |
16299 | ||
16300 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); | |
16301 | ||
16302 | if (cu_headerp->version == 2) | |
16303 | return cu_headerp->addr_size; | |
16304 | else | |
16305 | return cu_headerp->offset_size; | |
181cebd4 JK |
16306 | } |
16307 | ||
9aa1f1e3 TT |
16308 | /* Return the text offset of the CU. The returned offset comes from |
16309 | this CU's objfile. If this objfile came from a separate debuginfo | |
16310 | file, then the offset may be different from the corresponding | |
16311 | offset in the parent objfile. */ | |
16312 | ||
16313 | CORE_ADDR | |
16314 | dwarf2_per_cu_text_offset (struct dwarf2_per_cu_data *per_cu) | |
16315 | { | |
bb3fa9d0 | 16316 | struct objfile *objfile = per_cu->objfile; |
9aa1f1e3 TT |
16317 | |
16318 | return ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
16319 | } | |
16320 | ||
348e048f DE |
16321 | /* Locate the .debug_info compilation unit from CU's objfile which contains |
16322 | the DIE at OFFSET. Raises an error on failure. */ | |
ae038cb0 DJ |
16323 | |
16324 | static struct dwarf2_per_cu_data * | |
b64f50a1 | 16325 | dwarf2_find_containing_comp_unit (sect_offset offset, |
ae038cb0 DJ |
16326 | struct objfile *objfile) |
16327 | { | |
16328 | struct dwarf2_per_cu_data *this_cu; | |
16329 | int low, high; | |
16330 | ||
ae038cb0 DJ |
16331 | low = 0; |
16332 | high = dwarf2_per_objfile->n_comp_units - 1; | |
16333 | while (high > low) | |
16334 | { | |
16335 | int mid = low + (high - low) / 2; | |
9a619af0 | 16336 | |
b64f50a1 JK |
16337 | if (dwarf2_per_objfile->all_comp_units[mid]->offset.sect_off |
16338 | >= offset.sect_off) | |
ae038cb0 DJ |
16339 | high = mid; |
16340 | else | |
16341 | low = mid + 1; | |
16342 | } | |
16343 | gdb_assert (low == high); | |
b64f50a1 JK |
16344 | if (dwarf2_per_objfile->all_comp_units[low]->offset.sect_off |
16345 | > offset.sect_off) | |
ae038cb0 | 16346 | { |
10b3939b | 16347 | if (low == 0) |
8a3fe4f8 AC |
16348 | error (_("Dwarf Error: could not find partial DIE containing " |
16349 | "offset 0x%lx [in module %s]"), | |
b64f50a1 | 16350 | (long) offset.sect_off, bfd_get_filename (objfile->obfd)); |
10b3939b | 16351 | |
b64f50a1 JK |
16352 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->offset.sect_off |
16353 | <= offset.sect_off); | |
ae038cb0 DJ |
16354 | return dwarf2_per_objfile->all_comp_units[low-1]; |
16355 | } | |
16356 | else | |
16357 | { | |
16358 | this_cu = dwarf2_per_objfile->all_comp_units[low]; | |
16359 | if (low == dwarf2_per_objfile->n_comp_units - 1 | |
b64f50a1 JK |
16360 | && offset.sect_off >= this_cu->offset.sect_off + this_cu->length) |
16361 | error (_("invalid dwarf2 offset %u"), offset.sect_off); | |
16362 | gdb_assert (offset.sect_off < this_cu->offset.sect_off + this_cu->length); | |
ae038cb0 DJ |
16363 | return this_cu; |
16364 | } | |
16365 | } | |
16366 | ||
23745b47 | 16367 | /* Initialize dwarf2_cu CU, owned by PER_CU. */ |
93311388 | 16368 | |
9816fde3 | 16369 | static void |
23745b47 | 16370 | init_one_comp_unit (struct dwarf2_cu *cu, struct dwarf2_per_cu_data *per_cu) |
93311388 | 16371 | { |
9816fde3 | 16372 | memset (cu, 0, sizeof (*cu)); |
23745b47 DE |
16373 | per_cu->cu = cu; |
16374 | cu->per_cu = per_cu; | |
16375 | cu->objfile = per_cu->objfile; | |
93311388 | 16376 | obstack_init (&cu->comp_unit_obstack); |
9816fde3 JK |
16377 | } |
16378 | ||
16379 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
16380 | ||
16381 | static void | |
16382 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die) | |
16383 | { | |
16384 | struct attribute *attr; | |
16385 | ||
16386 | /* Set the language we're debugging. */ | |
16387 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
16388 | if (attr) | |
16389 | set_cu_language (DW_UNSND (attr), cu); | |
16390 | else | |
9cded63f TT |
16391 | { |
16392 | cu->language = language_minimal; | |
16393 | cu->language_defn = language_def (cu->language); | |
16394 | } | |
dee91e82 DE |
16395 | |
16396 | attr = dwarf2_attr (comp_unit_die, DW_AT_producer, cu); | |
16397 | if (attr) | |
16398 | cu->producer = DW_STRING (attr); | |
93311388 DE |
16399 | } |
16400 | ||
ae038cb0 DJ |
16401 | /* Release one cached compilation unit, CU. We unlink it from the tree |
16402 | of compilation units, but we don't remove it from the read_in_chain; | |
93311388 DE |
16403 | the caller is responsible for that. |
16404 | NOTE: DATA is a void * because this function is also used as a | |
16405 | cleanup routine. */ | |
ae038cb0 DJ |
16406 | |
16407 | static void | |
68dc6402 | 16408 | free_heap_comp_unit (void *data) |
ae038cb0 DJ |
16409 | { |
16410 | struct dwarf2_cu *cu = data; | |
16411 | ||
23745b47 DE |
16412 | gdb_assert (cu->per_cu != NULL); |
16413 | cu->per_cu->cu = NULL; | |
ae038cb0 DJ |
16414 | cu->per_cu = NULL; |
16415 | ||
16416 | obstack_free (&cu->comp_unit_obstack, NULL); | |
16417 | ||
16418 | xfree (cu); | |
16419 | } | |
16420 | ||
72bf9492 | 16421 | /* This cleanup function is passed the address of a dwarf2_cu on the stack |
ae038cb0 | 16422 | when we're finished with it. We can't free the pointer itself, but be |
dee91e82 | 16423 | sure to unlink it from the cache. Also release any associated storage. */ |
72bf9492 DJ |
16424 | |
16425 | static void | |
16426 | free_stack_comp_unit (void *data) | |
16427 | { | |
16428 | struct dwarf2_cu *cu = data; | |
16429 | ||
23745b47 DE |
16430 | gdb_assert (cu->per_cu != NULL); |
16431 | cu->per_cu->cu = NULL; | |
16432 | cu->per_cu = NULL; | |
16433 | ||
72bf9492 DJ |
16434 | obstack_free (&cu->comp_unit_obstack, NULL); |
16435 | cu->partial_dies = NULL; | |
ae038cb0 DJ |
16436 | } |
16437 | ||
16438 | /* Free all cached compilation units. */ | |
16439 | ||
16440 | static void | |
16441 | free_cached_comp_units (void *data) | |
16442 | { | |
16443 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
16444 | ||
16445 | per_cu = dwarf2_per_objfile->read_in_chain; | |
16446 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
16447 | while (per_cu != NULL) | |
16448 | { | |
16449 | struct dwarf2_per_cu_data *next_cu; | |
16450 | ||
16451 | next_cu = per_cu->cu->read_in_chain; | |
16452 | ||
68dc6402 | 16453 | free_heap_comp_unit (per_cu->cu); |
ae038cb0 DJ |
16454 | *last_chain = next_cu; |
16455 | ||
16456 | per_cu = next_cu; | |
16457 | } | |
16458 | } | |
16459 | ||
16460 | /* Increase the age counter on each cached compilation unit, and free | |
16461 | any that are too old. */ | |
16462 | ||
16463 | static void | |
16464 | age_cached_comp_units (void) | |
16465 | { | |
16466 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
16467 | ||
16468 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
16469 | per_cu = dwarf2_per_objfile->read_in_chain; | |
16470 | while (per_cu != NULL) | |
16471 | { | |
16472 | per_cu->cu->last_used ++; | |
16473 | if (per_cu->cu->last_used <= dwarf2_max_cache_age) | |
16474 | dwarf2_mark (per_cu->cu); | |
16475 | per_cu = per_cu->cu->read_in_chain; | |
16476 | } | |
16477 | ||
16478 | per_cu = dwarf2_per_objfile->read_in_chain; | |
16479 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
16480 | while (per_cu != NULL) | |
16481 | { | |
16482 | struct dwarf2_per_cu_data *next_cu; | |
16483 | ||
16484 | next_cu = per_cu->cu->read_in_chain; | |
16485 | ||
16486 | if (!per_cu->cu->mark) | |
16487 | { | |
68dc6402 | 16488 | free_heap_comp_unit (per_cu->cu); |
ae038cb0 DJ |
16489 | *last_chain = next_cu; |
16490 | } | |
16491 | else | |
16492 | last_chain = &per_cu->cu->read_in_chain; | |
16493 | ||
16494 | per_cu = next_cu; | |
16495 | } | |
16496 | } | |
16497 | ||
16498 | /* Remove a single compilation unit from the cache. */ | |
16499 | ||
16500 | static void | |
dee91e82 | 16501 | free_one_cached_comp_unit (struct dwarf2_per_cu_data *target_per_cu) |
ae038cb0 DJ |
16502 | { |
16503 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
16504 | ||
16505 | per_cu = dwarf2_per_objfile->read_in_chain; | |
16506 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
16507 | while (per_cu != NULL) | |
16508 | { | |
16509 | struct dwarf2_per_cu_data *next_cu; | |
16510 | ||
16511 | next_cu = per_cu->cu->read_in_chain; | |
16512 | ||
dee91e82 | 16513 | if (per_cu == target_per_cu) |
ae038cb0 | 16514 | { |
68dc6402 | 16515 | free_heap_comp_unit (per_cu->cu); |
dee91e82 | 16516 | per_cu->cu = NULL; |
ae038cb0 DJ |
16517 | *last_chain = next_cu; |
16518 | break; | |
16519 | } | |
16520 | else | |
16521 | last_chain = &per_cu->cu->read_in_chain; | |
16522 | ||
16523 | per_cu = next_cu; | |
16524 | } | |
16525 | } | |
16526 | ||
fe3e1990 DJ |
16527 | /* Release all extra memory associated with OBJFILE. */ |
16528 | ||
16529 | void | |
16530 | dwarf2_free_objfile (struct objfile *objfile) | |
16531 | { | |
16532 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
16533 | ||
16534 | if (dwarf2_per_objfile == NULL) | |
16535 | return; | |
16536 | ||
16537 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
16538 | free_cached_comp_units (NULL); | |
16539 | ||
7b9f3c50 DE |
16540 | if (dwarf2_per_objfile->quick_file_names_table) |
16541 | htab_delete (dwarf2_per_objfile->quick_file_names_table); | |
9291a0cd | 16542 | |
fe3e1990 DJ |
16543 | /* Everything else should be on the objfile obstack. */ |
16544 | } | |
16545 | ||
dee91e82 DE |
16546 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
16547 | We store these in a hash table separate from the DIEs, and preserve them | |
16548 | when the DIEs are flushed out of cache. | |
16549 | ||
16550 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 DE |
16551 | uniquely identify the type. A file may have multiple .debug_types sections, |
16552 | or the type may come from a DWO file. We have to use something in | |
16553 | dwarf2_per_cu_data (or the pointer to it) because we can enter the lookup | |
16554 | routine, get_die_type_at_offset, from outside this file, and thus won't | |
16555 | necessarily have PER_CU->cu. Fortunately, PER_CU is stable for the life | |
16556 | of the objfile. */ | |
1c379e20 | 16557 | |
dee91e82 | 16558 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 16559 | { |
dee91e82 | 16560 | const struct dwarf2_per_cu_data *per_cu; |
b64f50a1 | 16561 | sect_offset offset; |
1c379e20 DJ |
16562 | struct type *type; |
16563 | }; | |
16564 | ||
dee91e82 | 16565 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
16566 | |
16567 | static hashval_t | |
dee91e82 | 16568 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 16569 | { |
dee91e82 | 16570 | const struct dwarf2_per_cu_offset_and_type *ofs = item; |
9a619af0 | 16571 | |
dee91e82 | 16572 | return (uintptr_t) ofs->per_cu + ofs->offset.sect_off; |
1c379e20 DJ |
16573 | } |
16574 | ||
dee91e82 | 16575 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
16576 | |
16577 | static int | |
dee91e82 | 16578 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 16579 | { |
dee91e82 DE |
16580 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs = item_lhs; |
16581 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs = item_rhs; | |
9a619af0 | 16582 | |
dee91e82 DE |
16583 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
16584 | && ofs_lhs->offset.sect_off == ofs_rhs->offset.sect_off); | |
1c379e20 DJ |
16585 | } |
16586 | ||
16587 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
16588 | table if necessary. For convenience, return TYPE. |
16589 | ||
16590 | The DIEs reading must have careful ordering to: | |
16591 | * Not cause infite loops trying to read in DIEs as a prerequisite for | |
16592 | reading current DIE. | |
16593 | * Not trying to dereference contents of still incompletely read in types | |
16594 | while reading in other DIEs. | |
16595 | * Enable referencing still incompletely read in types just by a pointer to | |
16596 | the type without accessing its fields. | |
16597 | ||
16598 | Therefore caller should follow these rules: | |
16599 | * Try to fetch any prerequisite types we may need to build this DIE type | |
16600 | before building the type and calling set_die_type. | |
e71ec853 | 16601 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
16602 | possible before fetching more types to complete the current type. |
16603 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 16604 | |
f792889a | 16605 | static struct type * |
1c379e20 DJ |
16606 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
16607 | { | |
dee91e82 | 16608 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
673bfd45 | 16609 | struct objfile *objfile = cu->objfile; |
1c379e20 | 16610 | |
b4ba55a1 JB |
16611 | /* For Ada types, make sure that the gnat-specific data is always |
16612 | initialized (if not already set). There are a few types where | |
16613 | we should not be doing so, because the type-specific area is | |
16614 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
16615 | where the type-specific area is used to store the floatformat). | |
16616 | But this is not a problem, because the gnat-specific information | |
16617 | is actually not needed for these types. */ | |
16618 | if (need_gnat_info (cu) | |
16619 | && TYPE_CODE (type) != TYPE_CODE_FUNC | |
16620 | && TYPE_CODE (type) != TYPE_CODE_FLT | |
16621 | && !HAVE_GNAT_AUX_INFO (type)) | |
16622 | INIT_GNAT_SPECIFIC (type); | |
16623 | ||
dee91e82 | 16624 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 16625 | { |
dee91e82 DE |
16626 | dwarf2_per_objfile->die_type_hash = |
16627 | htab_create_alloc_ex (127, | |
16628 | per_cu_offset_and_type_hash, | |
16629 | per_cu_offset_and_type_eq, | |
16630 | NULL, | |
16631 | &objfile->objfile_obstack, | |
16632 | hashtab_obstack_allocate, | |
16633 | dummy_obstack_deallocate); | |
f792889a | 16634 | } |
1c379e20 | 16635 | |
dee91e82 | 16636 | ofs.per_cu = cu->per_cu; |
1c379e20 DJ |
16637 | ofs.offset = die->offset; |
16638 | ofs.type = type; | |
dee91e82 DE |
16639 | slot = (struct dwarf2_per_cu_offset_and_type **) |
16640 | htab_find_slot (dwarf2_per_objfile->die_type_hash, &ofs, INSERT); | |
7e314c57 JK |
16641 | if (*slot) |
16642 | complaint (&symfile_complaints, | |
16643 | _("A problem internal to GDB: DIE 0x%x has type already set"), | |
b64f50a1 | 16644 | die->offset.sect_off); |
673bfd45 | 16645 | *slot = obstack_alloc (&objfile->objfile_obstack, sizeof (**slot)); |
1c379e20 | 16646 | **slot = ofs; |
f792889a | 16647 | return type; |
1c379e20 DJ |
16648 | } |
16649 | ||
380bca97 | 16650 | /* Look up the type for the die at OFFSET in the appropriate type_hash |
673bfd45 | 16651 | table, or return NULL if the die does not have a saved type. */ |
1c379e20 DJ |
16652 | |
16653 | static struct type * | |
b64f50a1 | 16654 | get_die_type_at_offset (sect_offset offset, |
673bfd45 | 16655 | struct dwarf2_per_cu_data *per_cu) |
1c379e20 | 16656 | { |
dee91e82 | 16657 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
f792889a | 16658 | |
dee91e82 | 16659 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 16660 | return NULL; |
1c379e20 | 16661 | |
dee91e82 | 16662 | ofs.per_cu = per_cu; |
673bfd45 | 16663 | ofs.offset = offset; |
dee91e82 | 16664 | slot = htab_find (dwarf2_per_objfile->die_type_hash, &ofs); |
1c379e20 DJ |
16665 | if (slot) |
16666 | return slot->type; | |
16667 | else | |
16668 | return NULL; | |
16669 | } | |
16670 | ||
673bfd45 DE |
16671 | /* Look up the type for DIE in the appropriate type_hash table, |
16672 | or return NULL if DIE does not have a saved type. */ | |
16673 | ||
16674 | static struct type * | |
16675 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
16676 | { | |
16677 | return get_die_type_at_offset (die->offset, cu->per_cu); | |
16678 | } | |
16679 | ||
10b3939b DJ |
16680 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
16681 | ||
16682 | static void | |
16683 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
16684 | struct dwarf2_per_cu_data *ref_per_cu) | |
16685 | { | |
16686 | void **slot; | |
16687 | ||
16688 | if (cu->dependencies == NULL) | |
16689 | cu->dependencies | |
16690 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
16691 | NULL, &cu->comp_unit_obstack, | |
16692 | hashtab_obstack_allocate, | |
16693 | dummy_obstack_deallocate); | |
16694 | ||
16695 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
16696 | if (*slot == NULL) | |
16697 | *slot = ref_per_cu; | |
16698 | } | |
1c379e20 | 16699 | |
f504f079 DE |
16700 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
16701 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
16702 | cache that we must keep because we are keeping CU. */ |
16703 | ||
10b3939b DJ |
16704 | static int |
16705 | dwarf2_mark_helper (void **slot, void *data) | |
16706 | { | |
16707 | struct dwarf2_per_cu_data *per_cu; | |
16708 | ||
16709 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
d07ed419 JK |
16710 | |
16711 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
16712 | reading of the chain. As such dependencies remain valid it is not much | |
16713 | useful to track and undo them during QUIT cleanups. */ | |
16714 | if (per_cu->cu == NULL) | |
16715 | return 1; | |
16716 | ||
10b3939b DJ |
16717 | if (per_cu->cu->mark) |
16718 | return 1; | |
16719 | per_cu->cu->mark = 1; | |
16720 | ||
16721 | if (per_cu->cu->dependencies != NULL) | |
16722 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
16723 | ||
16724 | return 1; | |
16725 | } | |
16726 | ||
f504f079 DE |
16727 | /* Set the mark field in CU and in every other compilation unit in the |
16728 | cache that we must keep because we are keeping CU. */ | |
16729 | ||
ae038cb0 DJ |
16730 | static void |
16731 | dwarf2_mark (struct dwarf2_cu *cu) | |
16732 | { | |
16733 | if (cu->mark) | |
16734 | return; | |
16735 | cu->mark = 1; | |
10b3939b DJ |
16736 | if (cu->dependencies != NULL) |
16737 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
16738 | } |
16739 | ||
16740 | static void | |
16741 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
16742 | { | |
16743 | while (per_cu) | |
16744 | { | |
16745 | per_cu->cu->mark = 0; | |
16746 | per_cu = per_cu->cu->read_in_chain; | |
16747 | } | |
72bf9492 DJ |
16748 | } |
16749 | ||
72bf9492 DJ |
16750 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
16751 | is its offset in .debug_info for this objfile. */ | |
16752 | ||
16753 | static hashval_t | |
16754 | partial_die_hash (const void *item) | |
16755 | { | |
16756 | const struct partial_die_info *part_die = item; | |
9a619af0 | 16757 | |
b64f50a1 | 16758 | return part_die->offset.sect_off; |
72bf9492 DJ |
16759 | } |
16760 | ||
16761 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
16762 | are equal if they have the same offset. */ | |
16763 | ||
16764 | static int | |
16765 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
16766 | { | |
16767 | const struct partial_die_info *part_die_lhs = item_lhs; | |
16768 | const struct partial_die_info *part_die_rhs = item_rhs; | |
9a619af0 | 16769 | |
b64f50a1 | 16770 | return part_die_lhs->offset.sect_off == part_die_rhs->offset.sect_off; |
72bf9492 DJ |
16771 | } |
16772 | ||
ae038cb0 DJ |
16773 | static struct cmd_list_element *set_dwarf2_cmdlist; |
16774 | static struct cmd_list_element *show_dwarf2_cmdlist; | |
16775 | ||
16776 | static void | |
16777 | set_dwarf2_cmd (char *args, int from_tty) | |
16778 | { | |
16779 | help_list (set_dwarf2_cmdlist, "maintenance set dwarf2 ", -1, gdb_stdout); | |
16780 | } | |
16781 | ||
16782 | static void | |
16783 | show_dwarf2_cmd (char *args, int from_tty) | |
6e70227d | 16784 | { |
ae038cb0 DJ |
16785 | cmd_show_list (show_dwarf2_cmdlist, from_tty, ""); |
16786 | } | |
16787 | ||
dce234bc PP |
16788 | /* If section described by INFO was mmapped, munmap it now. */ |
16789 | ||
16790 | static void | |
16791 | munmap_section_buffer (struct dwarf2_section_info *info) | |
16792 | { | |
b315ab21 | 16793 | if (info->map_addr != NULL) |
dce234bc PP |
16794 | { |
16795 | #ifdef HAVE_MMAP | |
b315ab21 | 16796 | int res; |
9a619af0 | 16797 | |
b315ab21 TG |
16798 | res = munmap (info->map_addr, info->map_len); |
16799 | gdb_assert (res == 0); | |
dce234bc PP |
16800 | #else |
16801 | /* Without HAVE_MMAP, we should never be here to begin with. */ | |
f3574227 | 16802 | gdb_assert_not_reached ("no mmap support"); |
dce234bc PP |
16803 | #endif |
16804 | } | |
16805 | } | |
16806 | ||
16807 | /* munmap debug sections for OBJFILE, if necessary. */ | |
16808 | ||
16809 | static void | |
c1bd65d0 | 16810 | dwarf2_per_objfile_free (struct objfile *objfile, void *d) |
dce234bc PP |
16811 | { |
16812 | struct dwarf2_per_objfile *data = d; | |
8b70b953 TT |
16813 | int ix; |
16814 | struct dwarf2_section_info *section; | |
9a619af0 | 16815 | |
16be1145 DE |
16816 | /* This is sorted according to the order they're defined in to make it easier |
16817 | to keep in sync. */ | |
dce234bc PP |
16818 | munmap_section_buffer (&data->info); |
16819 | munmap_section_buffer (&data->abbrev); | |
16820 | munmap_section_buffer (&data->line); | |
16be1145 | 16821 | munmap_section_buffer (&data->loc); |
dce234bc | 16822 | munmap_section_buffer (&data->macinfo); |
cf2c3c16 | 16823 | munmap_section_buffer (&data->macro); |
16be1145 | 16824 | munmap_section_buffer (&data->str); |
dce234bc | 16825 | munmap_section_buffer (&data->ranges); |
3019eac3 | 16826 | munmap_section_buffer (&data->addr); |
dce234bc PP |
16827 | munmap_section_buffer (&data->frame); |
16828 | munmap_section_buffer (&data->eh_frame); | |
9291a0cd | 16829 | munmap_section_buffer (&data->gdb_index); |
8b70b953 TT |
16830 | |
16831 | for (ix = 0; | |
16832 | VEC_iterate (dwarf2_section_info_def, data->types, ix, section); | |
16833 | ++ix) | |
16834 | munmap_section_buffer (section); | |
16835 | ||
16836 | VEC_free (dwarf2_section_info_def, data->types); | |
3019eac3 DE |
16837 | |
16838 | if (data->dwo_files) | |
16839 | free_dwo_files (data->dwo_files, objfile); | |
9291a0cd TT |
16840 | } |
16841 | ||
16842 | \f | |
ae2de4f8 | 16843 | /* The "save gdb-index" command. */ |
9291a0cd TT |
16844 | |
16845 | /* The contents of the hash table we create when building the string | |
16846 | table. */ | |
16847 | struct strtab_entry | |
16848 | { | |
16849 | offset_type offset; | |
16850 | const char *str; | |
16851 | }; | |
16852 | ||
559a7a62 JK |
16853 | /* Hash function for a strtab_entry. |
16854 | ||
16855 | Function is used only during write_hash_table so no index format backward | |
16856 | compatibility is needed. */ | |
b89be57b | 16857 | |
9291a0cd TT |
16858 | static hashval_t |
16859 | hash_strtab_entry (const void *e) | |
16860 | { | |
16861 | const struct strtab_entry *entry = e; | |
559a7a62 | 16862 | return mapped_index_string_hash (INT_MAX, entry->str); |
9291a0cd TT |
16863 | } |
16864 | ||
16865 | /* Equality function for a strtab_entry. */ | |
b89be57b | 16866 | |
9291a0cd TT |
16867 | static int |
16868 | eq_strtab_entry (const void *a, const void *b) | |
16869 | { | |
16870 | const struct strtab_entry *ea = a; | |
16871 | const struct strtab_entry *eb = b; | |
16872 | return !strcmp (ea->str, eb->str); | |
16873 | } | |
16874 | ||
16875 | /* Create a strtab_entry hash table. */ | |
b89be57b | 16876 | |
9291a0cd TT |
16877 | static htab_t |
16878 | create_strtab (void) | |
16879 | { | |
16880 | return htab_create_alloc (100, hash_strtab_entry, eq_strtab_entry, | |
16881 | xfree, xcalloc, xfree); | |
16882 | } | |
16883 | ||
16884 | /* Add a string to the constant pool. Return the string's offset in | |
16885 | host order. */ | |
b89be57b | 16886 | |
9291a0cd TT |
16887 | static offset_type |
16888 | add_string (htab_t table, struct obstack *cpool, const char *str) | |
16889 | { | |
16890 | void **slot; | |
16891 | struct strtab_entry entry; | |
16892 | struct strtab_entry *result; | |
16893 | ||
16894 | entry.str = str; | |
16895 | slot = htab_find_slot (table, &entry, INSERT); | |
16896 | if (*slot) | |
16897 | result = *slot; | |
16898 | else | |
16899 | { | |
16900 | result = XNEW (struct strtab_entry); | |
16901 | result->offset = obstack_object_size (cpool); | |
16902 | result->str = str; | |
16903 | obstack_grow_str0 (cpool, str); | |
16904 | *slot = result; | |
16905 | } | |
16906 | return result->offset; | |
16907 | } | |
16908 | ||
16909 | /* An entry in the symbol table. */ | |
16910 | struct symtab_index_entry | |
16911 | { | |
16912 | /* The name of the symbol. */ | |
16913 | const char *name; | |
16914 | /* The offset of the name in the constant pool. */ | |
16915 | offset_type index_offset; | |
16916 | /* A sorted vector of the indices of all the CUs that hold an object | |
16917 | of this name. */ | |
16918 | VEC (offset_type) *cu_indices; | |
16919 | }; | |
16920 | ||
16921 | /* The symbol table. This is a power-of-2-sized hash table. */ | |
16922 | struct mapped_symtab | |
16923 | { | |
16924 | offset_type n_elements; | |
16925 | offset_type size; | |
16926 | struct symtab_index_entry **data; | |
16927 | }; | |
16928 | ||
16929 | /* Hash function for a symtab_index_entry. */ | |
b89be57b | 16930 | |
9291a0cd TT |
16931 | static hashval_t |
16932 | hash_symtab_entry (const void *e) | |
16933 | { | |
16934 | const struct symtab_index_entry *entry = e; | |
16935 | return iterative_hash (VEC_address (offset_type, entry->cu_indices), | |
16936 | sizeof (offset_type) * VEC_length (offset_type, | |
16937 | entry->cu_indices), | |
16938 | 0); | |
16939 | } | |
16940 | ||
16941 | /* Equality function for a symtab_index_entry. */ | |
b89be57b | 16942 | |
9291a0cd TT |
16943 | static int |
16944 | eq_symtab_entry (const void *a, const void *b) | |
16945 | { | |
16946 | const struct symtab_index_entry *ea = a; | |
16947 | const struct symtab_index_entry *eb = b; | |
16948 | int len = VEC_length (offset_type, ea->cu_indices); | |
16949 | if (len != VEC_length (offset_type, eb->cu_indices)) | |
16950 | return 0; | |
16951 | return !memcmp (VEC_address (offset_type, ea->cu_indices), | |
16952 | VEC_address (offset_type, eb->cu_indices), | |
16953 | sizeof (offset_type) * len); | |
16954 | } | |
16955 | ||
16956 | /* Destroy a symtab_index_entry. */ | |
b89be57b | 16957 | |
9291a0cd TT |
16958 | static void |
16959 | delete_symtab_entry (void *p) | |
16960 | { | |
16961 | struct symtab_index_entry *entry = p; | |
16962 | VEC_free (offset_type, entry->cu_indices); | |
16963 | xfree (entry); | |
16964 | } | |
16965 | ||
16966 | /* Create a hash table holding symtab_index_entry objects. */ | |
b89be57b | 16967 | |
9291a0cd | 16968 | static htab_t |
3876f04e | 16969 | create_symbol_hash_table (void) |
9291a0cd TT |
16970 | { |
16971 | return htab_create_alloc (100, hash_symtab_entry, eq_symtab_entry, | |
16972 | delete_symtab_entry, xcalloc, xfree); | |
16973 | } | |
16974 | ||
16975 | /* Create a new mapped symtab object. */ | |
b89be57b | 16976 | |
9291a0cd TT |
16977 | static struct mapped_symtab * |
16978 | create_mapped_symtab (void) | |
16979 | { | |
16980 | struct mapped_symtab *symtab = XNEW (struct mapped_symtab); | |
16981 | symtab->n_elements = 0; | |
16982 | symtab->size = 1024; | |
16983 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
16984 | return symtab; | |
16985 | } | |
16986 | ||
16987 | /* Destroy a mapped_symtab. */ | |
b89be57b | 16988 | |
9291a0cd TT |
16989 | static void |
16990 | cleanup_mapped_symtab (void *p) | |
16991 | { | |
16992 | struct mapped_symtab *symtab = p; | |
16993 | /* The contents of the array are freed when the other hash table is | |
16994 | destroyed. */ | |
16995 | xfree (symtab->data); | |
16996 | xfree (symtab); | |
16997 | } | |
16998 | ||
16999 | /* Find a slot in SYMTAB for the symbol NAME. Returns a pointer to | |
559a7a62 JK |
17000 | the slot. |
17001 | ||
17002 | Function is used only during write_hash_table so no index format backward | |
17003 | compatibility is needed. */ | |
b89be57b | 17004 | |
9291a0cd TT |
17005 | static struct symtab_index_entry ** |
17006 | find_slot (struct mapped_symtab *symtab, const char *name) | |
17007 | { | |
559a7a62 | 17008 | offset_type index, step, hash = mapped_index_string_hash (INT_MAX, name); |
9291a0cd TT |
17009 | |
17010 | index = hash & (symtab->size - 1); | |
17011 | step = ((hash * 17) & (symtab->size - 1)) | 1; | |
17012 | ||
17013 | for (;;) | |
17014 | { | |
17015 | if (!symtab->data[index] || !strcmp (name, symtab->data[index]->name)) | |
17016 | return &symtab->data[index]; | |
17017 | index = (index + step) & (symtab->size - 1); | |
17018 | } | |
17019 | } | |
17020 | ||
17021 | /* Expand SYMTAB's hash table. */ | |
b89be57b | 17022 | |
9291a0cd TT |
17023 | static void |
17024 | hash_expand (struct mapped_symtab *symtab) | |
17025 | { | |
17026 | offset_type old_size = symtab->size; | |
17027 | offset_type i; | |
17028 | struct symtab_index_entry **old_entries = symtab->data; | |
17029 | ||
17030 | symtab->size *= 2; | |
17031 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
17032 | ||
17033 | for (i = 0; i < old_size; ++i) | |
17034 | { | |
17035 | if (old_entries[i]) | |
17036 | { | |
17037 | struct symtab_index_entry **slot = find_slot (symtab, | |
17038 | old_entries[i]->name); | |
17039 | *slot = old_entries[i]; | |
17040 | } | |
17041 | } | |
17042 | ||
17043 | xfree (old_entries); | |
17044 | } | |
17045 | ||
17046 | /* Add an entry to SYMTAB. NAME is the name of the symbol. CU_INDEX | |
17047 | is the index of the CU in which the symbol appears. */ | |
b89be57b | 17048 | |
9291a0cd TT |
17049 | static void |
17050 | add_index_entry (struct mapped_symtab *symtab, const char *name, | |
17051 | offset_type cu_index) | |
17052 | { | |
17053 | struct symtab_index_entry **slot; | |
17054 | ||
17055 | ++symtab->n_elements; | |
17056 | if (4 * symtab->n_elements / 3 >= symtab->size) | |
17057 | hash_expand (symtab); | |
17058 | ||
17059 | slot = find_slot (symtab, name); | |
17060 | if (!*slot) | |
17061 | { | |
17062 | *slot = XNEW (struct symtab_index_entry); | |
17063 | (*slot)->name = name; | |
17064 | (*slot)->cu_indices = NULL; | |
17065 | } | |
17066 | /* Don't push an index twice. Due to how we add entries we only | |
17067 | have to check the last one. */ | |
17068 | if (VEC_empty (offset_type, (*slot)->cu_indices) | |
cf31e6f9 | 17069 | || VEC_last (offset_type, (*slot)->cu_indices) != cu_index) |
9291a0cd TT |
17070 | VEC_safe_push (offset_type, (*slot)->cu_indices, cu_index); |
17071 | } | |
17072 | ||
17073 | /* Add a vector of indices to the constant pool. */ | |
b89be57b | 17074 | |
9291a0cd | 17075 | static offset_type |
3876f04e | 17076 | add_indices_to_cpool (htab_t symbol_hash_table, struct obstack *cpool, |
9291a0cd TT |
17077 | struct symtab_index_entry *entry) |
17078 | { | |
17079 | void **slot; | |
17080 | ||
3876f04e | 17081 | slot = htab_find_slot (symbol_hash_table, entry, INSERT); |
9291a0cd TT |
17082 | if (!*slot) |
17083 | { | |
17084 | offset_type len = VEC_length (offset_type, entry->cu_indices); | |
17085 | offset_type val = MAYBE_SWAP (len); | |
17086 | offset_type iter; | |
17087 | int i; | |
17088 | ||
17089 | *slot = entry; | |
17090 | entry->index_offset = obstack_object_size (cpool); | |
17091 | ||
17092 | obstack_grow (cpool, &val, sizeof (val)); | |
17093 | for (i = 0; | |
17094 | VEC_iterate (offset_type, entry->cu_indices, i, iter); | |
17095 | ++i) | |
17096 | { | |
17097 | val = MAYBE_SWAP (iter); | |
17098 | obstack_grow (cpool, &val, sizeof (val)); | |
17099 | } | |
17100 | } | |
17101 | else | |
17102 | { | |
17103 | struct symtab_index_entry *old_entry = *slot; | |
17104 | entry->index_offset = old_entry->index_offset; | |
17105 | entry = old_entry; | |
17106 | } | |
17107 | return entry->index_offset; | |
17108 | } | |
17109 | ||
17110 | /* Write the mapped hash table SYMTAB to the obstack OUTPUT, with | |
17111 | constant pool entries going into the obstack CPOOL. */ | |
b89be57b | 17112 | |
9291a0cd TT |
17113 | static void |
17114 | write_hash_table (struct mapped_symtab *symtab, | |
17115 | struct obstack *output, struct obstack *cpool) | |
17116 | { | |
17117 | offset_type i; | |
3876f04e | 17118 | htab_t symbol_hash_table; |
9291a0cd TT |
17119 | htab_t str_table; |
17120 | ||
3876f04e | 17121 | symbol_hash_table = create_symbol_hash_table (); |
9291a0cd | 17122 | str_table = create_strtab (); |
3876f04e | 17123 | |
9291a0cd TT |
17124 | /* We add all the index vectors to the constant pool first, to |
17125 | ensure alignment is ok. */ | |
17126 | for (i = 0; i < symtab->size; ++i) | |
17127 | { | |
17128 | if (symtab->data[i]) | |
3876f04e | 17129 | add_indices_to_cpool (symbol_hash_table, cpool, symtab->data[i]); |
9291a0cd TT |
17130 | } |
17131 | ||
17132 | /* Now write out the hash table. */ | |
17133 | for (i = 0; i < symtab->size; ++i) | |
17134 | { | |
17135 | offset_type str_off, vec_off; | |
17136 | ||
17137 | if (symtab->data[i]) | |
17138 | { | |
17139 | str_off = add_string (str_table, cpool, symtab->data[i]->name); | |
17140 | vec_off = symtab->data[i]->index_offset; | |
17141 | } | |
17142 | else | |
17143 | { | |
17144 | /* While 0 is a valid constant pool index, it is not valid | |
17145 | to have 0 for both offsets. */ | |
17146 | str_off = 0; | |
17147 | vec_off = 0; | |
17148 | } | |
17149 | ||
17150 | str_off = MAYBE_SWAP (str_off); | |
17151 | vec_off = MAYBE_SWAP (vec_off); | |
17152 | ||
17153 | obstack_grow (output, &str_off, sizeof (str_off)); | |
17154 | obstack_grow (output, &vec_off, sizeof (vec_off)); | |
17155 | } | |
17156 | ||
17157 | htab_delete (str_table); | |
3876f04e | 17158 | htab_delete (symbol_hash_table); |
9291a0cd TT |
17159 | } |
17160 | ||
0a5429f6 DE |
17161 | /* Struct to map psymtab to CU index in the index file. */ |
17162 | struct psymtab_cu_index_map | |
17163 | { | |
17164 | struct partial_symtab *psymtab; | |
17165 | unsigned int cu_index; | |
17166 | }; | |
17167 | ||
17168 | static hashval_t | |
17169 | hash_psymtab_cu_index (const void *item) | |
17170 | { | |
17171 | const struct psymtab_cu_index_map *map = item; | |
17172 | ||
17173 | return htab_hash_pointer (map->psymtab); | |
17174 | } | |
17175 | ||
17176 | static int | |
17177 | eq_psymtab_cu_index (const void *item_lhs, const void *item_rhs) | |
17178 | { | |
17179 | const struct psymtab_cu_index_map *lhs = item_lhs; | |
17180 | const struct psymtab_cu_index_map *rhs = item_rhs; | |
17181 | ||
17182 | return lhs->psymtab == rhs->psymtab; | |
17183 | } | |
17184 | ||
17185 | /* Helper struct for building the address table. */ | |
17186 | struct addrmap_index_data | |
17187 | { | |
17188 | struct objfile *objfile; | |
17189 | struct obstack *addr_obstack; | |
17190 | htab_t cu_index_htab; | |
17191 | ||
17192 | /* Non-zero if the previous_* fields are valid. | |
17193 | We can't write an entry until we see the next entry (since it is only then | |
17194 | that we know the end of the entry). */ | |
17195 | int previous_valid; | |
17196 | /* Index of the CU in the table of all CUs in the index file. */ | |
17197 | unsigned int previous_cu_index; | |
0963b4bd | 17198 | /* Start address of the CU. */ |
0a5429f6 DE |
17199 | CORE_ADDR previous_cu_start; |
17200 | }; | |
17201 | ||
17202 | /* Write an address entry to OBSTACK. */ | |
b89be57b | 17203 | |
9291a0cd | 17204 | static void |
0a5429f6 DE |
17205 | add_address_entry (struct objfile *objfile, struct obstack *obstack, |
17206 | CORE_ADDR start, CORE_ADDR end, unsigned int cu_index) | |
9291a0cd | 17207 | { |
0a5429f6 | 17208 | offset_type cu_index_to_write; |
9291a0cd TT |
17209 | char addr[8]; |
17210 | CORE_ADDR baseaddr; | |
17211 | ||
17212 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
17213 | ||
0a5429f6 DE |
17214 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, start - baseaddr); |
17215 | obstack_grow (obstack, addr, 8); | |
17216 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, end - baseaddr); | |
17217 | obstack_grow (obstack, addr, 8); | |
17218 | cu_index_to_write = MAYBE_SWAP (cu_index); | |
17219 | obstack_grow (obstack, &cu_index_to_write, sizeof (offset_type)); | |
17220 | } | |
17221 | ||
17222 | /* Worker function for traversing an addrmap to build the address table. */ | |
17223 | ||
17224 | static int | |
17225 | add_address_entry_worker (void *datap, CORE_ADDR start_addr, void *obj) | |
17226 | { | |
17227 | struct addrmap_index_data *data = datap; | |
17228 | struct partial_symtab *pst = obj; | |
17229 | offset_type cu_index; | |
17230 | void **slot; | |
17231 | ||
17232 | if (data->previous_valid) | |
17233 | add_address_entry (data->objfile, data->addr_obstack, | |
17234 | data->previous_cu_start, start_addr, | |
17235 | data->previous_cu_index); | |
17236 | ||
17237 | data->previous_cu_start = start_addr; | |
17238 | if (pst != NULL) | |
17239 | { | |
17240 | struct psymtab_cu_index_map find_map, *map; | |
17241 | find_map.psymtab = pst; | |
17242 | map = htab_find (data->cu_index_htab, &find_map); | |
17243 | gdb_assert (map != NULL); | |
17244 | data->previous_cu_index = map->cu_index; | |
17245 | data->previous_valid = 1; | |
17246 | } | |
17247 | else | |
17248 | data->previous_valid = 0; | |
17249 | ||
17250 | return 0; | |
17251 | } | |
17252 | ||
17253 | /* Write OBJFILE's address map to OBSTACK. | |
17254 | CU_INDEX_HTAB is used to map addrmap entries to their CU indices | |
17255 | in the index file. */ | |
17256 | ||
17257 | static void | |
17258 | write_address_map (struct objfile *objfile, struct obstack *obstack, | |
17259 | htab_t cu_index_htab) | |
17260 | { | |
17261 | struct addrmap_index_data addrmap_index_data; | |
17262 | ||
17263 | /* When writing the address table, we have to cope with the fact that | |
17264 | the addrmap iterator only provides the start of a region; we have to | |
17265 | wait until the next invocation to get the start of the next region. */ | |
17266 | ||
17267 | addrmap_index_data.objfile = objfile; | |
17268 | addrmap_index_data.addr_obstack = obstack; | |
17269 | addrmap_index_data.cu_index_htab = cu_index_htab; | |
17270 | addrmap_index_data.previous_valid = 0; | |
17271 | ||
17272 | addrmap_foreach (objfile->psymtabs_addrmap, add_address_entry_worker, | |
17273 | &addrmap_index_data); | |
17274 | ||
17275 | /* It's highly unlikely the last entry (end address = 0xff...ff) | |
17276 | is valid, but we should still handle it. | |
17277 | The end address is recorded as the start of the next region, but that | |
17278 | doesn't work here. To cope we pass 0xff...ff, this is a rare situation | |
17279 | anyway. */ | |
17280 | if (addrmap_index_data.previous_valid) | |
17281 | add_address_entry (objfile, obstack, | |
17282 | addrmap_index_data.previous_cu_start, (CORE_ADDR) -1, | |
17283 | addrmap_index_data.previous_cu_index); | |
9291a0cd TT |
17284 | } |
17285 | ||
17286 | /* Add a list of partial symbols to SYMTAB. */ | |
b89be57b | 17287 | |
9291a0cd TT |
17288 | static void |
17289 | write_psymbols (struct mapped_symtab *symtab, | |
987d643c | 17290 | htab_t psyms_seen, |
9291a0cd TT |
17291 | struct partial_symbol **psymp, |
17292 | int count, | |
987d643c TT |
17293 | offset_type cu_index, |
17294 | int is_static) | |
9291a0cd TT |
17295 | { |
17296 | for (; count-- > 0; ++psymp) | |
17297 | { | |
987d643c TT |
17298 | void **slot, *lookup; |
17299 | ||
9291a0cd TT |
17300 | if (SYMBOL_LANGUAGE (*psymp) == language_ada) |
17301 | error (_("Ada is not currently supported by the index")); | |
987d643c TT |
17302 | |
17303 | /* We only want to add a given psymbol once. However, we also | |
17304 | want to account for whether it is global or static. So, we | |
17305 | may add it twice, using slightly different values. */ | |
17306 | if (is_static) | |
17307 | { | |
17308 | uintptr_t val = 1 | (uintptr_t) *psymp; | |
17309 | ||
17310 | lookup = (void *) val; | |
17311 | } | |
17312 | else | |
17313 | lookup = *psymp; | |
17314 | ||
17315 | /* Only add a given psymbol once. */ | |
17316 | slot = htab_find_slot (psyms_seen, lookup, INSERT); | |
17317 | if (!*slot) | |
17318 | { | |
17319 | *slot = lookup; | |
bb2f58dc | 17320 | add_index_entry (symtab, SYMBOL_SEARCH_NAME (*psymp), cu_index); |
987d643c | 17321 | } |
9291a0cd TT |
17322 | } |
17323 | } | |
17324 | ||
17325 | /* Write the contents of an ("unfinished") obstack to FILE. Throw an | |
17326 | exception if there is an error. */ | |
b89be57b | 17327 | |
9291a0cd TT |
17328 | static void |
17329 | write_obstack (FILE *file, struct obstack *obstack) | |
17330 | { | |
17331 | if (fwrite (obstack_base (obstack), 1, obstack_object_size (obstack), | |
17332 | file) | |
17333 | != obstack_object_size (obstack)) | |
17334 | error (_("couldn't data write to file")); | |
17335 | } | |
17336 | ||
17337 | /* Unlink a file if the argument is not NULL. */ | |
b89be57b | 17338 | |
9291a0cd TT |
17339 | static void |
17340 | unlink_if_set (void *p) | |
17341 | { | |
17342 | char **filename = p; | |
17343 | if (*filename) | |
17344 | unlink (*filename); | |
17345 | } | |
17346 | ||
1fd400ff TT |
17347 | /* A helper struct used when iterating over debug_types. */ |
17348 | struct signatured_type_index_data | |
17349 | { | |
17350 | struct objfile *objfile; | |
17351 | struct mapped_symtab *symtab; | |
17352 | struct obstack *types_list; | |
987d643c | 17353 | htab_t psyms_seen; |
1fd400ff TT |
17354 | int cu_index; |
17355 | }; | |
17356 | ||
17357 | /* A helper function that writes a single signatured_type to an | |
17358 | obstack. */ | |
b89be57b | 17359 | |
1fd400ff TT |
17360 | static int |
17361 | write_one_signatured_type (void **slot, void *d) | |
17362 | { | |
17363 | struct signatured_type_index_data *info = d; | |
17364 | struct signatured_type *entry = (struct signatured_type *) *slot; | |
e254ef6a DE |
17365 | struct dwarf2_per_cu_data *per_cu = &entry->per_cu; |
17366 | struct partial_symtab *psymtab = per_cu->v.psymtab; | |
1fd400ff TT |
17367 | gdb_byte val[8]; |
17368 | ||
17369 | write_psymbols (info->symtab, | |
987d643c | 17370 | info->psyms_seen, |
3e43a32a MS |
17371 | info->objfile->global_psymbols.list |
17372 | + psymtab->globals_offset, | |
987d643c TT |
17373 | psymtab->n_global_syms, info->cu_index, |
17374 | 0); | |
1fd400ff | 17375 | write_psymbols (info->symtab, |
987d643c | 17376 | info->psyms_seen, |
3e43a32a MS |
17377 | info->objfile->static_psymbols.list |
17378 | + psymtab->statics_offset, | |
987d643c TT |
17379 | psymtab->n_static_syms, info->cu_index, |
17380 | 1); | |
1fd400ff | 17381 | |
b64f50a1 JK |
17382 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
17383 | entry->per_cu.offset.sect_off); | |
1fd400ff | 17384 | obstack_grow (info->types_list, val, 8); |
3019eac3 DE |
17385 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
17386 | entry->type_offset_in_tu.cu_off); | |
1fd400ff TT |
17387 | obstack_grow (info->types_list, val, 8); |
17388 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, entry->signature); | |
17389 | obstack_grow (info->types_list, val, 8); | |
17390 | ||
17391 | ++info->cu_index; | |
17392 | ||
17393 | return 1; | |
17394 | } | |
17395 | ||
9291a0cd | 17396 | /* Create an index file for OBJFILE in the directory DIR. */ |
b89be57b | 17397 | |
9291a0cd TT |
17398 | static void |
17399 | write_psymtabs_to_index (struct objfile *objfile, const char *dir) | |
17400 | { | |
17401 | struct cleanup *cleanup; | |
17402 | char *filename, *cleanup_filename; | |
1fd400ff TT |
17403 | struct obstack contents, addr_obstack, constant_pool, symtab_obstack; |
17404 | struct obstack cu_list, types_cu_list; | |
9291a0cd TT |
17405 | int i; |
17406 | FILE *out_file; | |
17407 | struct mapped_symtab *symtab; | |
17408 | offset_type val, size_of_contents, total_len; | |
17409 | struct stat st; | |
17410 | char buf[8]; | |
987d643c | 17411 | htab_t psyms_seen; |
0a5429f6 DE |
17412 | htab_t cu_index_htab; |
17413 | struct psymtab_cu_index_map *psymtab_cu_index_map; | |
9291a0cd | 17414 | |
b4f2f049 | 17415 | if (!objfile->psymtabs || !objfile->psymtabs_addrmap) |
9291a0cd | 17416 | return; |
b4f2f049 | 17417 | |
9291a0cd TT |
17418 | if (dwarf2_per_objfile->using_index) |
17419 | error (_("Cannot use an index to create the index")); | |
17420 | ||
8b70b953 TT |
17421 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) > 1) |
17422 | error (_("Cannot make an index when the file has multiple .debug_types sections")); | |
17423 | ||
9291a0cd | 17424 | if (stat (objfile->name, &st) < 0) |
7e17e088 | 17425 | perror_with_name (objfile->name); |
9291a0cd TT |
17426 | |
17427 | filename = concat (dir, SLASH_STRING, lbasename (objfile->name), | |
17428 | INDEX_SUFFIX, (char *) NULL); | |
17429 | cleanup = make_cleanup (xfree, filename); | |
17430 | ||
17431 | out_file = fopen (filename, "wb"); | |
17432 | if (!out_file) | |
17433 | error (_("Can't open `%s' for writing"), filename); | |
17434 | ||
17435 | cleanup_filename = filename; | |
17436 | make_cleanup (unlink_if_set, &cleanup_filename); | |
17437 | ||
17438 | symtab = create_mapped_symtab (); | |
17439 | make_cleanup (cleanup_mapped_symtab, symtab); | |
17440 | ||
17441 | obstack_init (&addr_obstack); | |
17442 | make_cleanup_obstack_free (&addr_obstack); | |
17443 | ||
17444 | obstack_init (&cu_list); | |
17445 | make_cleanup_obstack_free (&cu_list); | |
17446 | ||
1fd400ff TT |
17447 | obstack_init (&types_cu_list); |
17448 | make_cleanup_obstack_free (&types_cu_list); | |
17449 | ||
987d643c TT |
17450 | psyms_seen = htab_create_alloc (100, htab_hash_pointer, htab_eq_pointer, |
17451 | NULL, xcalloc, xfree); | |
96408a79 | 17452 | make_cleanup_htab_delete (psyms_seen); |
987d643c | 17453 | |
0a5429f6 DE |
17454 | /* While we're scanning CU's create a table that maps a psymtab pointer |
17455 | (which is what addrmap records) to its index (which is what is recorded | |
17456 | in the index file). This will later be needed to write the address | |
17457 | table. */ | |
17458 | cu_index_htab = htab_create_alloc (100, | |
17459 | hash_psymtab_cu_index, | |
17460 | eq_psymtab_cu_index, | |
17461 | NULL, xcalloc, xfree); | |
96408a79 | 17462 | make_cleanup_htab_delete (cu_index_htab); |
0a5429f6 DE |
17463 | psymtab_cu_index_map = (struct psymtab_cu_index_map *) |
17464 | xmalloc (sizeof (struct psymtab_cu_index_map) | |
17465 | * dwarf2_per_objfile->n_comp_units); | |
17466 | make_cleanup (xfree, psymtab_cu_index_map); | |
17467 | ||
17468 | /* The CU list is already sorted, so we don't need to do additional | |
1fd400ff TT |
17469 | work here. Also, the debug_types entries do not appear in |
17470 | all_comp_units, but only in their own hash table. */ | |
9291a0cd TT |
17471 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
17472 | { | |
3e43a32a MS |
17473 | struct dwarf2_per_cu_data *per_cu |
17474 | = dwarf2_per_objfile->all_comp_units[i]; | |
e254ef6a | 17475 | struct partial_symtab *psymtab = per_cu->v.psymtab; |
9291a0cd | 17476 | gdb_byte val[8]; |
0a5429f6 DE |
17477 | struct psymtab_cu_index_map *map; |
17478 | void **slot; | |
9291a0cd TT |
17479 | |
17480 | write_psymbols (symtab, | |
987d643c | 17481 | psyms_seen, |
9291a0cd | 17482 | objfile->global_psymbols.list + psymtab->globals_offset, |
987d643c TT |
17483 | psymtab->n_global_syms, i, |
17484 | 0); | |
9291a0cd | 17485 | write_psymbols (symtab, |
987d643c | 17486 | psyms_seen, |
9291a0cd | 17487 | objfile->static_psymbols.list + psymtab->statics_offset, |
987d643c TT |
17488 | psymtab->n_static_syms, i, |
17489 | 1); | |
9291a0cd | 17490 | |
0a5429f6 DE |
17491 | map = &psymtab_cu_index_map[i]; |
17492 | map->psymtab = psymtab; | |
17493 | map->cu_index = i; | |
17494 | slot = htab_find_slot (cu_index_htab, map, INSERT); | |
17495 | gdb_assert (slot != NULL); | |
17496 | gdb_assert (*slot == NULL); | |
17497 | *slot = map; | |
9291a0cd | 17498 | |
b64f50a1 JK |
17499 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
17500 | per_cu->offset.sect_off); | |
9291a0cd | 17501 | obstack_grow (&cu_list, val, 8); |
e254ef6a | 17502 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, per_cu->length); |
9291a0cd TT |
17503 | obstack_grow (&cu_list, val, 8); |
17504 | } | |
17505 | ||
0a5429f6 DE |
17506 | /* Dump the address map. */ |
17507 | write_address_map (objfile, &addr_obstack, cu_index_htab); | |
17508 | ||
1fd400ff TT |
17509 | /* Write out the .debug_type entries, if any. */ |
17510 | if (dwarf2_per_objfile->signatured_types) | |
17511 | { | |
17512 | struct signatured_type_index_data sig_data; | |
17513 | ||
17514 | sig_data.objfile = objfile; | |
17515 | sig_data.symtab = symtab; | |
17516 | sig_data.types_list = &types_cu_list; | |
987d643c | 17517 | sig_data.psyms_seen = psyms_seen; |
1fd400ff TT |
17518 | sig_data.cu_index = dwarf2_per_objfile->n_comp_units; |
17519 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types, | |
17520 | write_one_signatured_type, &sig_data); | |
17521 | } | |
17522 | ||
9291a0cd TT |
17523 | obstack_init (&constant_pool); |
17524 | make_cleanup_obstack_free (&constant_pool); | |
17525 | obstack_init (&symtab_obstack); | |
17526 | make_cleanup_obstack_free (&symtab_obstack); | |
17527 | write_hash_table (symtab, &symtab_obstack, &constant_pool); | |
17528 | ||
17529 | obstack_init (&contents); | |
17530 | make_cleanup_obstack_free (&contents); | |
1fd400ff | 17531 | size_of_contents = 6 * sizeof (offset_type); |
9291a0cd TT |
17532 | total_len = size_of_contents; |
17533 | ||
17534 | /* The version number. */ | |
481860b3 | 17535 | val = MAYBE_SWAP (6); |
9291a0cd TT |
17536 | obstack_grow (&contents, &val, sizeof (val)); |
17537 | ||
17538 | /* The offset of the CU list from the start of the file. */ | |
17539 | val = MAYBE_SWAP (total_len); | |
17540 | obstack_grow (&contents, &val, sizeof (val)); | |
17541 | total_len += obstack_object_size (&cu_list); | |
17542 | ||
1fd400ff TT |
17543 | /* The offset of the types CU list from the start of the file. */ |
17544 | val = MAYBE_SWAP (total_len); | |
17545 | obstack_grow (&contents, &val, sizeof (val)); | |
17546 | total_len += obstack_object_size (&types_cu_list); | |
17547 | ||
9291a0cd TT |
17548 | /* The offset of the address table from the start of the file. */ |
17549 | val = MAYBE_SWAP (total_len); | |
17550 | obstack_grow (&contents, &val, sizeof (val)); | |
17551 | total_len += obstack_object_size (&addr_obstack); | |
17552 | ||
17553 | /* The offset of the symbol table from the start of the file. */ | |
17554 | val = MAYBE_SWAP (total_len); | |
17555 | obstack_grow (&contents, &val, sizeof (val)); | |
17556 | total_len += obstack_object_size (&symtab_obstack); | |
17557 | ||
17558 | /* The offset of the constant pool from the start of the file. */ | |
17559 | val = MAYBE_SWAP (total_len); | |
17560 | obstack_grow (&contents, &val, sizeof (val)); | |
17561 | total_len += obstack_object_size (&constant_pool); | |
17562 | ||
17563 | gdb_assert (obstack_object_size (&contents) == size_of_contents); | |
17564 | ||
17565 | write_obstack (out_file, &contents); | |
17566 | write_obstack (out_file, &cu_list); | |
1fd400ff | 17567 | write_obstack (out_file, &types_cu_list); |
9291a0cd TT |
17568 | write_obstack (out_file, &addr_obstack); |
17569 | write_obstack (out_file, &symtab_obstack); | |
17570 | write_obstack (out_file, &constant_pool); | |
17571 | ||
17572 | fclose (out_file); | |
17573 | ||
17574 | /* We want to keep the file, so we set cleanup_filename to NULL | |
17575 | here. See unlink_if_set. */ | |
17576 | cleanup_filename = NULL; | |
17577 | ||
17578 | do_cleanups (cleanup); | |
17579 | } | |
17580 | ||
90476074 TT |
17581 | /* Implementation of the `save gdb-index' command. |
17582 | ||
17583 | Note that the file format used by this command is documented in the | |
17584 | GDB manual. Any changes here must be documented there. */ | |
11570e71 | 17585 | |
9291a0cd TT |
17586 | static void |
17587 | save_gdb_index_command (char *arg, int from_tty) | |
17588 | { | |
17589 | struct objfile *objfile; | |
17590 | ||
17591 | if (!arg || !*arg) | |
96d19272 | 17592 | error (_("usage: save gdb-index DIRECTORY")); |
9291a0cd TT |
17593 | |
17594 | ALL_OBJFILES (objfile) | |
17595 | { | |
17596 | struct stat st; | |
17597 | ||
17598 | /* If the objfile does not correspond to an actual file, skip it. */ | |
17599 | if (stat (objfile->name, &st) < 0) | |
17600 | continue; | |
17601 | ||
17602 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
17603 | if (dwarf2_per_objfile) | |
17604 | { | |
17605 | volatile struct gdb_exception except; | |
17606 | ||
17607 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
17608 | { | |
17609 | write_psymtabs_to_index (objfile, arg); | |
17610 | } | |
17611 | if (except.reason < 0) | |
17612 | exception_fprintf (gdb_stderr, except, | |
17613 | _("Error while writing index for `%s': "), | |
17614 | objfile->name); | |
17615 | } | |
17616 | } | |
dce234bc PP |
17617 | } |
17618 | ||
9291a0cd TT |
17619 | \f |
17620 | ||
9eae7c52 TT |
17621 | int dwarf2_always_disassemble; |
17622 | ||
17623 | static void | |
17624 | show_dwarf2_always_disassemble (struct ui_file *file, int from_tty, | |
17625 | struct cmd_list_element *c, const char *value) | |
17626 | { | |
3e43a32a MS |
17627 | fprintf_filtered (file, |
17628 | _("Whether to always disassemble " | |
17629 | "DWARF expressions is %s.\n"), | |
9eae7c52 TT |
17630 | value); |
17631 | } | |
17632 | ||
900e11f9 JK |
17633 | static void |
17634 | show_check_physname (struct ui_file *file, int from_tty, | |
17635 | struct cmd_list_element *c, const char *value) | |
17636 | { | |
17637 | fprintf_filtered (file, | |
17638 | _("Whether to check \"physname\" is %s.\n"), | |
17639 | value); | |
17640 | } | |
17641 | ||
6502dd73 DJ |
17642 | void _initialize_dwarf2_read (void); |
17643 | ||
17644 | void | |
17645 | _initialize_dwarf2_read (void) | |
17646 | { | |
96d19272 JK |
17647 | struct cmd_list_element *c; |
17648 | ||
dce234bc | 17649 | dwarf2_objfile_data_key |
c1bd65d0 | 17650 | = register_objfile_data_with_cleanup (NULL, dwarf2_per_objfile_free); |
ae038cb0 | 17651 | |
1bedd215 AC |
17652 | add_prefix_cmd ("dwarf2", class_maintenance, set_dwarf2_cmd, _("\ |
17653 | Set DWARF 2 specific variables.\n\ | |
17654 | Configure DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
17655 | &set_dwarf2_cmdlist, "maintenance set dwarf2 ", |
17656 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
17657 | ||
1bedd215 AC |
17658 | add_prefix_cmd ("dwarf2", class_maintenance, show_dwarf2_cmd, _("\ |
17659 | Show DWARF 2 specific variables\n\ | |
17660 | Show DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
17661 | &show_dwarf2_cmdlist, "maintenance show dwarf2 ", |
17662 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
17663 | ||
17664 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, | |
7915a72c AC |
17665 | &dwarf2_max_cache_age, _("\ |
17666 | Set the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
17667 | Show the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
17668 | A higher limit means that cached compilation units will be stored\n\ | |
17669 | in memory longer, and more total memory will be used. Zero disables\n\ | |
17670 | caching, which can slow down startup."), | |
2c5b56ce | 17671 | NULL, |
920d2a44 | 17672 | show_dwarf2_max_cache_age, |
2c5b56ce | 17673 | &set_dwarf2_cmdlist, |
ae038cb0 | 17674 | &show_dwarf2_cmdlist); |
d97bc12b | 17675 | |
9eae7c52 TT |
17676 | add_setshow_boolean_cmd ("always-disassemble", class_obscure, |
17677 | &dwarf2_always_disassemble, _("\ | |
17678 | Set whether `info address' always disassembles DWARF expressions."), _("\ | |
17679 | Show whether `info address' always disassembles DWARF expressions."), _("\ | |
17680 | When enabled, DWARF expressions are always printed in an assembly-like\n\ | |
17681 | syntax. When disabled, expressions will be printed in a more\n\ | |
17682 | conversational style, when possible."), | |
17683 | NULL, | |
17684 | show_dwarf2_always_disassemble, | |
17685 | &set_dwarf2_cmdlist, | |
17686 | &show_dwarf2_cmdlist); | |
17687 | ||
d97bc12b DE |
17688 | add_setshow_zinteger_cmd ("dwarf2-die", no_class, &dwarf2_die_debug, _("\ |
17689 | Set debugging of the dwarf2 DIE reader."), _("\ | |
17690 | Show debugging of the dwarf2 DIE reader."), _("\ | |
17691 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
17692 | The value is the maximum depth to print."), | |
17693 | NULL, | |
17694 | NULL, | |
17695 | &setdebuglist, &showdebuglist); | |
9291a0cd | 17696 | |
900e11f9 JK |
17697 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
17698 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
17699 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
17700 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
17701 | the demangler."), | |
17702 | NULL, show_check_physname, | |
17703 | &setdebuglist, &showdebuglist); | |
17704 | ||
96d19272 | 17705 | c = add_cmd ("gdb-index", class_files, save_gdb_index_command, |
11570e71 | 17706 | _("\ |
fc1a9d6e | 17707 | Save a gdb-index file.\n\ |
11570e71 | 17708 | Usage: save gdb-index DIRECTORY"), |
96d19272 JK |
17709 | &save_cmdlist); |
17710 | set_cmd_completer (c, filename_completer); | |
6502dd73 | 17711 | } |